mirror of
https://github.com/tinygo-org/tinygo.git
synced 2026-07-27 07:08:42 +00:00
Compare commits
2 Commits
| Author | SHA1 | Date | |
|---|---|---|---|
 Ayke van Laethem
|
d27cfb1585 | ||
|
Ayke van Laethem
|
e6e561100a |
@@ -1,345 +0,0 @@
|
||||
version: 2.1
|
||||
|
||||
commands:
|
||||
submodules:
|
||||
steps:
|
||||
- run:
|
||||
name: "Pull submodules"
|
||||
command: git submodule update --init
|
||||
apt-dependencies:
|
||||
parameters:
|
||||
llvm:
|
||||
type: string
|
||||
steps:
|
||||
- run:
|
||||
name: "Install apt dependencies"
|
||||
command: |
|
||||
echo 'deb http://apt.llvm.org/stretch/ llvm-toolchain-stretch<<parameters.llvm>> main' | sudo tee /etc/apt/sources.list.d/llvm.list
|
||||
wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key|sudo apt-key add -
|
||||
sudo apt-get update
|
||||
sudo apt-get install \
|
||||
python3 \
|
||||
llvm<<parameters.llvm>>-dev \
|
||||
clang<<parameters.llvm>> \
|
||||
libclang<<parameters.llvm>>-dev \
|
||||
lld<<parameters.llvm>> \
|
||||
gcc-arm-linux-gnueabihf \
|
||||
libc6-dev-armel-cross \
|
||||
gcc-aarch64-linux-gnu \
|
||||
libc6-dev-arm64-cross \
|
||||
qemu-system-arm \
|
||||
qemu-user \
|
||||
gcc-avr \
|
||||
avr-libc
|
||||
install-node:
|
||||
steps:
|
||||
- run:
|
||||
name: "Install node.js"
|
||||
command: |
|
||||
wget https://nodejs.org/dist/v10.15.1/node-v10.15.1-linux-x64.tar.xz
|
||||
sudo tar -C /usr/local -xf node-v10.15.1-linux-x64.tar.xz
|
||||
sudo ln -s /usr/local/node-v10.15.1-linux-x64/bin/node /usr/bin/node
|
||||
rm node-v10.15.1-linux-x64.tar.xz
|
||||
llvm-source-linux:
|
||||
steps:
|
||||
- restore_cache:
|
||||
keys:
|
||||
- llvm-source-9-v0
|
||||
- run:
|
||||
name: "Fetch LLVM source"
|
||||
command: make llvm-source
|
||||
- save_cache:
|
||||
key: llvm-source-9-v0
|
||||
paths:
|
||||
- llvm-project
|
||||
test-linux:
|
||||
steps:
|
||||
- checkout
|
||||
- submodules
|
||||
- apt-dependencies:
|
||||
llvm: "-9"
|
||||
- install-node
|
||||
- restore_cache:
|
||||
keys:
|
||||
- go-cache-v2-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_PREVIOUS_BUILD_NUM }}
|
||||
- go-cache-v2-{{ checksum "go.mod" }}
|
||||
- llvm-source-linux
|
||||
- run: go install .
|
||||
- run: go test -v ./cgo ./compileopts ./interp ./transform .
|
||||
- run: make gen-device -j4
|
||||
- run: make smoketest RISCV=0
|
||||
- save_cache:
|
||||
key: go-cache-v2-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_BUILD_NUM }}
|
||||
paths:
|
||||
- ~/.cache/go-build
|
||||
- ~/.cache/tinygo
|
||||
- /go/pkg/mod
|
||||
- run: make fmt-check
|
||||
assert-test-linux:
|
||||
steps:
|
||||
- checkout
|
||||
- submodules
|
||||
- run:
|
||||
name: "Install apt dependencies"
|
||||
command: |
|
||||
sudo apt-get install \
|
||||
python3 \
|
||||
gcc-arm-linux-gnueabihf \
|
||||
binutils-arm-none-eabi \
|
||||
libc6-dev-armel-cross \
|
||||
gcc-aarch64-linux-gnu \
|
||||
libc6-dev-arm64-cross \
|
||||
qemu-system-arm \
|
||||
qemu-user \
|
||||
gcc-avr \
|
||||
avr-libc
|
||||
- install-node
|
||||
- restore_cache:
|
||||
keys:
|
||||
- go-cache-v2-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_PREVIOUS_BUILD_NUM }}
|
||||
- go-cache-v2-{{ checksum "go.mod" }}
|
||||
- llvm-source-linux
|
||||
- restore_cache:
|
||||
keys:
|
||||
- llvm-build-9-linux-v0-assert
|
||||
- run:
|
||||
name: "Build LLVM"
|
||||
command: |
|
||||
if [ ! -f llvm-build/lib/liblldELF.a ]
|
||||
then
|
||||
# install dependencies
|
||||
sudo apt-get install cmake clang ninja-build
|
||||
# make build faster
|
||||
export CC=clang
|
||||
export CXX=clang++
|
||||
# hack ninja to use less jobs
|
||||
echo -e '#!/bin/sh\n/usr/bin/ninja -j3 "$@"' > /go/bin/ninja
|
||||
chmod +x /go/bin/ninja
|
||||
# build!
|
||||
make ASSERT=1 llvm-build
|
||||
fi
|
||||
- save_cache:
|
||||
key: llvm-build-9-linux-v0-assert
|
||||
paths:
|
||||
llvm-build
|
||||
- run:
|
||||
name: "Create LLVM symlinks"
|
||||
command: |
|
||||
ln -s $PWD/llvm-build/bin/clang-9 /go/bin/clang-9
|
||||
ln -s $PWD/llvm-build/bin/ld.lld /go/bin/ld.lld-9
|
||||
ln -s $PWD/llvm-build/bin/wasm-ld /go/bin/wasm-ld-9
|
||||
- run: make ASSERT=1
|
||||
- run:
|
||||
name: "Test TinyGo"
|
||||
command: make ASSERT=1 test
|
||||
- save_cache:
|
||||
key: go-cache-v2-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_BUILD_NUM }}
|
||||
paths:
|
||||
- ~/.cache/go-build
|
||||
- ~/.cache/tinygo
|
||||
- /go/pkg/mod
|
||||
- run: make gen-device -j4
|
||||
- run: make smoketest TINYGO=build/tinygo RISCV=0
|
||||
build-linux:
|
||||
steps:
|
||||
- checkout
|
||||
- submodules
|
||||
- run:
|
||||
name: "Install apt dependencies"
|
||||
command: |
|
||||
sudo apt-get install \
|
||||
python3 \
|
||||
gcc-arm-linux-gnueabihf \
|
||||
binutils-arm-none-eabi \
|
||||
libc6-dev-armel-cross \
|
||||
gcc-aarch64-linux-gnu \
|
||||
libc6-dev-arm64-cross \
|
||||
qemu-system-arm \
|
||||
qemu-user \
|
||||
gcc-avr \
|
||||
avr-libc
|
||||
- install-node
|
||||
- restore_cache:
|
||||
keys:
|
||||
- go-cache-v2-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_PREVIOUS_BUILD_NUM }}
|
||||
- go-cache-v2-{{ checksum "go.mod" }}
|
||||
- llvm-source-linux
|
||||
- restore_cache:
|
||||
keys:
|
||||
- llvm-build-9-linux-v0
|
||||
- run:
|
||||
name: "Build LLVM"
|
||||
command: |
|
||||
if [ ! -f llvm-build/lib/liblldELF.a ]
|
||||
then
|
||||
# install dependencies
|
||||
sudo apt-get install cmake clang ninja-build
|
||||
# make build faster
|
||||
export CC=clang
|
||||
export CXX=clang++
|
||||
# hack ninja to use less jobs
|
||||
echo -e '#!/bin/sh\n/usr/bin/ninja -j3 "$@"' > /go/bin/ninja
|
||||
chmod +x /go/bin/ninja
|
||||
# build!
|
||||
make llvm-build
|
||||
fi
|
||||
- save_cache:
|
||||
key: llvm-build-9-linux-v0
|
||||
paths:
|
||||
llvm-build
|
||||
- run:
|
||||
name: "Create LLVM symlinks"
|
||||
command: |
|
||||
ln -s $PWD/llvm-build/bin/clang-9 /go/bin/clang-9
|
||||
ln -s $PWD/llvm-build/bin/ld.lld /go/bin/ld.lld-9
|
||||
ln -s $PWD/llvm-build/bin/wasm-ld /go/bin/wasm-ld-9
|
||||
- run:
|
||||
name: "Test TinyGo"
|
||||
command: make test
|
||||
- run:
|
||||
name: "Build TinyGo release"
|
||||
command: |
|
||||
make release -j3
|
||||
cp -p build/release.tar.gz /tmp/tinygo.linux-amd64.tar.gz
|
||||
- store_artifacts:
|
||||
path: /tmp/tinygo.linux-amd64.tar.gz
|
||||
- save_cache:
|
||||
key: go-cache-v2-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_BUILD_NUM }}
|
||||
paths:
|
||||
- ~/.cache/go-build
|
||||
- ~/.cache/tinygo
|
||||
- /go/pkg/mod
|
||||
- run:
|
||||
name: "Extract release tarball"
|
||||
command: |
|
||||
mkdir -p ~/lib
|
||||
tar -C ~/lib -xf /tmp/tinygo.linux-amd64.tar.gz
|
||||
ln -s ~/lib/tinygo/bin/tinygo /go/bin/tinygo
|
||||
tinygo version
|
||||
- run:
|
||||
name: "Download SiFive GNU toolchain"
|
||||
command: |
|
||||
curl -O https://static.dev.sifive.com/dev-tools/riscv64-unknown-elf-gcc-8.2.0-2019.05.3-x86_64-linux-ubuntu14.tar.gz
|
||||
sudo tar -C /usr/local --strip-components=1 -xf riscv64-unknown-elf-gcc-8.2.0-2019.05.3-x86_64-linux-ubuntu14.tar.gz
|
||||
- run: make smoketest
|
||||
build-macos:
|
||||
steps:
|
||||
- checkout
|
||||
- submodules
|
||||
- run:
|
||||
name: "Install dependencies"
|
||||
command: |
|
||||
curl https://dl.google.com/go/go1.13.darwin-amd64.tar.gz -o go1.13.darwin-amd64.tar.gz
|
||||
sudo tar -C /usr/local -xzf go1.13.darwin-amd64.tar.gz
|
||||
ln -s /usr/local/go/bin/go /usr/local/bin/go
|
||||
HOMEBREW_NO_AUTO_UPDATE=1 brew install qemu
|
||||
- restore_cache:
|
||||
keys:
|
||||
- go-cache-macos-v2-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_PREVIOUS_BUILD_NUM }}
|
||||
- go-cache-macos-v2-{{ checksum "go.mod" }}
|
||||
- restore_cache:
|
||||
keys:
|
||||
- llvm-source-9-macos-v0
|
||||
- run:
|
||||
name: "Fetch LLVM source"
|
||||
command: make llvm-source
|
||||
- save_cache:
|
||||
key: llvm-source-9-macos-v0
|
||||
paths:
|
||||
- llvm-project
|
||||
- restore_cache:
|
||||
keys:
|
||||
- llvm-build-9-macos-v0
|
||||
- run:
|
||||
name: "Build LLVM"
|
||||
command: |
|
||||
if [ ! -f llvm-build/lib/liblldELF.a ]
|
||||
then
|
||||
# install dependencies
|
||||
HOMEBREW_NO_AUTO_UPDATE=1 brew install cmake ninja
|
||||
# build!
|
||||
make llvm-build
|
||||
fi
|
||||
- save_cache:
|
||||
key: llvm-build-9-macos-v0
|
||||
paths:
|
||||
llvm-build
|
||||
- run:
|
||||
name: "Create LLVM symlinks"
|
||||
command: |
|
||||
ln -s $PWD/llvm-build/bin/clang-9 /usr/local/bin/clang-9
|
||||
- run:
|
||||
name: "Test TinyGo"
|
||||
command: make test
|
||||
- run:
|
||||
name: "Build TinyGo release"
|
||||
command: |
|
||||
make release -j3
|
||||
cp -p build/release.tar.gz /tmp/tinygo.darwin-amd64.tar.gz
|
||||
- store_artifacts:
|
||||
path: /tmp/tinygo.darwin-amd64.tar.gz
|
||||
- run:
|
||||
name: "Extract release tarball"
|
||||
command: |
|
||||
mkdir -p ~/lib
|
||||
tar -C /usr/local/opt -xf /tmp/tinygo.darwin-amd64.tar.gz
|
||||
ln -s /usr/local/opt/tinygo/bin/tinygo /usr/local/bin/tinygo
|
||||
tinygo version
|
||||
- run:
|
||||
name: "Download SiFive GNU toolchain"
|
||||
command: |
|
||||
curl -O https://static.dev.sifive.com/dev-tools/riscv64-unknown-elf-gcc-8.2.0-2019.05.3-x86_64-apple-darwin.tar.gz
|
||||
sudo tar -C /usr/local --strip-components=1 -xf riscv64-unknown-elf-gcc-8.2.0-2019.05.3-x86_64-apple-darwin.tar.gz
|
||||
- run: make smoketest AVR=0
|
||||
- save_cache:
|
||||
key: go-cache-macos-v2-{{ checksum "go.mod" }}-{{ .Environment.CIRCLE_BUILD_NUM }}
|
||||
paths:
|
||||
- ~/.cache/go-build
|
||||
- ~/.cache/tinygo
|
||||
- /go/pkg/mod
|
||||
|
||||
|
||||
jobs:
|
||||
test-llvm9-go111:
|
||||
docker:
|
||||
- image: circleci/golang:1.11-stretch
|
||||
steps:
|
||||
- test-linux
|
||||
test-llvm9-go112:
|
||||
docker:
|
||||
- image: circleci/golang:1.12-stretch
|
||||
steps:
|
||||
- test-linux
|
||||
test-llvm9-go113:
|
||||
docker:
|
||||
- image: circleci/golang:1.13-stretch
|
||||
steps:
|
||||
- test-linux
|
||||
assert-test-linux:
|
||||
docker:
|
||||
- image: circleci/golang:1.13-stretch
|
||||
steps:
|
||||
- assert-test-linux
|
||||
build-linux:
|
||||
docker:
|
||||
- image: circleci/golang:1.13-stretch
|
||||
steps:
|
||||
- build-linux
|
||||
build-macos:
|
||||
macos:
|
||||
xcode: "10.1.0"
|
||||
steps:
|
||||
- build-macos
|
||||
|
||||
|
||||
|
||||
|
||||
workflows:
|
||||
test-all:
|
||||
jobs:
|
||||
- test-llvm9-go111
|
||||
- test-llvm9-go112
|
||||
- test-llvm9-go113
|
||||
- build-linux
|
||||
- build-macos
|
||||
- assert-test-linux
|
||||
+2
-6
@@ -5,12 +5,8 @@ src/device/avr/*.ld
|
||||
src/device/avr/*.s
|
||||
src/device/nrf/*.go
|
||||
src/device/nrf/*.s
|
||||
src/device/sam/*.go
|
||||
src/device/sam/*.s
|
||||
src/device/sifive/*.go
|
||||
src/device/sifive/*.s
|
||||
src/device/stm32/*.go
|
||||
src/device/stm32/*.s
|
||||
src/device/sam/*.go
|
||||
src/device/sam/*.s
|
||||
vendor
|
||||
llvm-build
|
||||
llvm-project
|
||||
|
||||
+2
-2
@@ -9,8 +9,8 @@
|
||||
url = https://github.com/avr-rust/avr-mcu.git
|
||||
[submodule "lib/cmsis-svd"]
|
||||
path = lib/cmsis-svd
|
||||
url = https://github.com/tinygo-org/cmsis-svd
|
||||
url = https://github.com/posborne/cmsis-svd
|
||||
[submodule "lib/compiler-rt"]
|
||||
path = lib/compiler-rt
|
||||
url = https://github.com/llvm-mirror/compiler-rt.git
|
||||
branch = release_80
|
||||
branch = release_70
|
||||
|
||||
+33
@@ -0,0 +1,33 @@
|
||||
language: go
|
||||
|
||||
go:
|
||||
- "1.11"
|
||||
|
||||
before_install:
|
||||
- echo "deb http://apt.llvm.org/trusty/ llvm-toolchain-trusty-7 main" | sudo tee -a /etc/apt/sources.list
|
||||
- echo "deb http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu trusty main" | sudo tee -a /etc/apt/sources.list
|
||||
- sudo apt-get update -qq
|
||||
- sudo apt-get install llvm-7-dev clang-7 libclang-7-dev binutils-arm-none-eabi qemu-system-arm --allow-unauthenticated -y
|
||||
- sudo ln -s /usr/bin/clang-7 /usr/local/bin/cc # work around missing -no-pie in old GCC version
|
||||
|
||||
install:
|
||||
- curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
|
||||
- dep ensure --vendor-only
|
||||
|
||||
script:
|
||||
- go install github.com/aykevl/tinygo
|
||||
- go test -v .
|
||||
- make gen-device
|
||||
- tinygo build -o blinky1.nrf.elf -target=pca10040 examples/blinky1
|
||||
- tinygo build -o blinky2.nrf.elf -target=pca10040 examples/blinky2
|
||||
- tinygo build -o blinky2 examples/blinky2
|
||||
- tinygo build -o test.nrf.elf -target=pca10040 examples/test
|
||||
- tinygo build -o blinky1.nrf51.elf -target=microbit examples/echo
|
||||
- tinygo build -o test.nrf.elf -target=nrf52840-mdk examples/blinky1
|
||||
- tinygo build -o blinky1.nrf51d.elf -target=pca10031 examples/blinky1
|
||||
- tinygo build -o blinky1.stm32.elf -target=bluepill examples/blinky1
|
||||
- tinygo build -o blinky1.avr.o -target=arduino examples/blinky1 # TODO: avr-as/avr-gcc doesn't work
|
||||
- tinygo build -o blinky1.reel.elf -target=reelboard examples/blinky1
|
||||
- tinygo build -o blinky2.reel.elf -target=reelboard examples/blinky2
|
||||
- tinygo build -o blinky1.pca10056.elf -target=pca10056 examples/blinky1
|
||||
- tinygo build -o blinky2.pca10056.elf -target=pca10056 examples/blinky2
|
||||
-94
@@ -1,94 +0,0 @@
|
||||
# Building TinyGo
|
||||
|
||||
TinyGo depends on LLVM and libclang, which are both big C++ libraries. It can
|
||||
also optionally use a built-in lld to ease cross compiling. There are two ways
|
||||
these can be linked: dynamically and statically. An install with `go install` is
|
||||
dynamic linking because it is fast and works almost out of the box on
|
||||
Debian-based systems with the right packages installed.
|
||||
|
||||
This guide describes how to statically link TinyGo against LLVM, libclang and
|
||||
lld so that the binary can be easily moved between systems. It also shows how to
|
||||
build a release tarball that includes this binary and all necessary extra files.
|
||||
|
||||
## Dependencies
|
||||
|
||||
LLVM, Clang and LLD are quite light on dependencies, requiring only standard
|
||||
build tools to be built. Go is of course necessary to build TinyGo itself.
|
||||
|
||||
* Go (1.11+)
|
||||
* Standard build tools (gcc/clang)
|
||||
* git
|
||||
* CMake
|
||||
* [Ninja](https://ninja-build.org/)
|
||||
|
||||
The rest of this guide assumes you're running Linux, but it should be equivalent
|
||||
on a different system like Mac.
|
||||
|
||||
## Download the source
|
||||
|
||||
The first step is to download the TinyGo sources (use `--recursive` if you clone
|
||||
the git repository). Then, inside the directory, download the LLVM source:
|
||||
|
||||
make llvm-source
|
||||
|
||||
You can also store LLVM outside of the TinyGo root directory by setting the
|
||||
`LLVM_BUILDDIR`, `CLANG_SRC` and `LLD_SRC` make variables, but that is not
|
||||
covered by this guide.
|
||||
|
||||
TinyGo uses Go modules, so if you clone TinyGo inside your GOPATH (and are using
|
||||
Go below 1.13), make sure that Go modules are enabled:
|
||||
|
||||
export GO111MODULE=on
|
||||
|
||||
## Build LLVM, Clang, LLD
|
||||
|
||||
Before starting the build, you may want to set the following environment
|
||||
variables to speed up the build. Most Linux distributions ship with GCC as the
|
||||
default compiler, but Clang is significantly faster and uses much less memory
|
||||
while producing binaries that are about as fast.
|
||||
|
||||
export CC=clang
|
||||
export CXX=clang++
|
||||
|
||||
The Makefile includes a default configuration that is good for most users. It
|
||||
builds a release version of LLVM (optimized, no asserts) and includes all
|
||||
targets supported by TinyGo:
|
||||
|
||||
make llvm-build
|
||||
|
||||
This can take over an hour depending on the speed of your system.
|
||||
|
||||
## Build TinyGo
|
||||
|
||||
The last step of course is to build TinyGo itself. This can again be done with
|
||||
make:
|
||||
|
||||
make
|
||||
|
||||
## Verify TinyGo
|
||||
|
||||
Try running TinyGo:
|
||||
|
||||
./build/tinygo help
|
||||
|
||||
Also, make sure the `tinygo` binary really is statically linked. Check this
|
||||
using `ldd` (not to be confused with `lld`):
|
||||
|
||||
ldd ./build/tinygo
|
||||
|
||||
The result should not contain libclang or libLLVM.
|
||||
|
||||
## Make a release tarball
|
||||
|
||||
Now that we have a working static build, it's time to make a release tarball:
|
||||
|
||||
make release
|
||||
|
||||
The release tarball is stored in build/release.tar.gz, and can be extracted with
|
||||
the following command (for example in ~/lib):
|
||||
|
||||
tar -xvf path/to/release.tar.gz
|
||||
|
||||
TinyGo will get extracted to a `tinygo` directory. You can then call it with:
|
||||
|
||||
./tinygo/bin/tinygo
|
||||
-339
@@ -1,339 +0,0 @@
|
||||
0.10.0
|
||||
---
|
||||
* **command line**
|
||||
- halt GDB after flashing with `gdb` subcommand
|
||||
- fix a crash when using `-ocd-output`
|
||||
- add `info` subcommand
|
||||
- add `-programmer` flag
|
||||
* **builder**
|
||||
- macos: use llvm@8 instead of just llvm in paths
|
||||
- add `linkerscript` key to target JSON files
|
||||
- write a symbol table when writing out the compiler-rt lib
|
||||
- make Clang header detection more robust
|
||||
- switch to LLVM 9
|
||||
* **compiler**
|
||||
- fix interface miscompilation with reflect
|
||||
- fix miscompile of static goroutine calls to closures
|
||||
- fix `todo: store` panic
|
||||
- fix incorrect starting value for optimized allocations in a loop
|
||||
- optimize coroutines on non-Cortex-M targets
|
||||
- fix crash for programs which have heap allocations but never hit the GC
|
||||
- add support for async interface calls
|
||||
- fix inserting non-const values in a const global
|
||||
- interp: improve error reporting
|
||||
- interp: implement comparing ptrtoint to 0
|
||||
* **cgo**
|
||||
- improve diagnostics
|
||||
- implement the constant parser (for `#define`) as a real parser
|
||||
- rename reserved field names such as `type`
|
||||
- avoid `"unsafe" imported but not used` error
|
||||
- include all enums in the CGo Go AST
|
||||
- add support for nested structs and unions
|
||||
- implement `#cgo CFLAGS`
|
||||
* **standard library**
|
||||
- `reflect`: add implementation of array alignment
|
||||
- `runtime`: improve scheduler performance when no goroutines are queued
|
||||
- `runtime`: add blocking select
|
||||
- `runtime`: implement interface equality in non-trivial cases
|
||||
- `runtime`: add AdjustTimeOffset to update current time
|
||||
- `runtime`: only implement CountString for required platforms
|
||||
- `runtime`: use MSP/PSP registers for scheduling on Cortex-M
|
||||
* **targets**
|
||||
- `arm`: add system timer registers
|
||||
- `atmega`: add port C GPIO support
|
||||
- `atsamd21`: correct handling of pins >= 32
|
||||
- `atsamd21`: i2s initialization fixes
|
||||
- `atsamd51`: fix clock init code
|
||||
- `atsamd51`: correct initialization for RTC
|
||||
- `atsamd51`: fix pin function selection
|
||||
- `atsamd51`: pin method cleanup
|
||||
- `atsamd51`: allow setting pin mode for each of the SPI pins
|
||||
- `atsamd51`: correct channel init and pin map for ADC based on ItsyBitsy-M4
|
||||
- `feather-m4`: add Adafruit Feather M4 board
|
||||
- `hifive1b`: add support for SPI1
|
||||
- `hifive1b`: fix compiling in simulation
|
||||
- `linux`: fix time on arm32
|
||||
- `metro-m4`: add support for Adafruit Metro M4 Express Airlift board
|
||||
- `metro-m4`: fixes for UART2
|
||||
- `pinetime-devkit0`: add support for the PineTime dev kit
|
||||
- `x9pro`: add support for this smartwatch
|
||||
- `pca10040-s132v6`: add support for SoftDevice
|
||||
- `pca10056-s140v7`: add support for SoftDevice
|
||||
- `arduino-nano33`: added SPI1 connected to NINA-W102 chip on Arduino Nano 33 IOT
|
||||
|
||||
0.9.0
|
||||
---
|
||||
* **command line**
|
||||
- implement 1200-baud UART bootloader reset when flashing boards that support
|
||||
it
|
||||
- flash using mass-storage device for boards that support it
|
||||
- implement `tinygo env`
|
||||
- add support for Windows (but not yet producing Windows binaries)
|
||||
- add Go version to `tinygo env`
|
||||
- update SVD files for up-to-date peripheral interfaces
|
||||
* **compiler**
|
||||
- add `//go:align` pragma
|
||||
- fix bug related to type aliases
|
||||
- add support for buffered channels
|
||||
- remove incorrect reflect optimization
|
||||
- implement copying slices in init interpretation
|
||||
- add support for constant indices with a named type
|
||||
- add support for recursive types like linked lists
|
||||
- fix miscompile of function nil panics
|
||||
- fix bug related to goroutines
|
||||
* **standard library**
|
||||
- `machine`: do not check for nil slices in `SPI.Tx`
|
||||
- `reflectlite`: add support for Go 1.13
|
||||
- `runtime`: implement `internal/bytealg.CountString`
|
||||
- `sync`: properly handle nil `New` func in `sync.Pool`
|
||||
* **targets**
|
||||
- `arduino`: fix .bss section initialization
|
||||
- `fe310`: implement `Pin.Get`
|
||||
- `gameboy-advance`: support directly outputting .gba files
|
||||
- `samd`: reduce code size by avoiding reflection
|
||||
- `samd21`: do not hardcode pin numbers for peripherals
|
||||
- `stm32f103`: avoid issue with `time.Sleep` less than 200µs
|
||||
|
||||
0.8.0
|
||||
---
|
||||
* **command line**
|
||||
- fix parsing of beta Go versions
|
||||
- check the major/minor installed version of Go before compiling
|
||||
- validate `-target` flag better to not panic on an invalid target
|
||||
* **compiler**
|
||||
- implement full slice expression: `s[:2:4]`
|
||||
- fix a crash when storing a linked list in an interface
|
||||
- fix comparing struct types by making type IDs more unique
|
||||
- fix some bugs in IR generation
|
||||
- add support for linked lists in reflect data
|
||||
- implement `[]rune` to string conversion
|
||||
- implement support for `go` on func values
|
||||
* **standard library**
|
||||
- `reflect`: add support for named types
|
||||
- `reflect`: add support for `t.Bits()`
|
||||
- `reflect`: add basic support for `t.AssignableTo()`
|
||||
- `reflect`: implement `t.Align()`
|
||||
- `reflect`: add support for struct types
|
||||
- `reflect`: fix bug in `v.IsNil` and `v.Pointer` for addressable values
|
||||
- `reflect`: implement support for array types
|
||||
- `reflect`: implement `t.Comparable()`
|
||||
- `runtime`: implement stack-based scheduler
|
||||
- `runtime`: fix bug in the sleep queue of the scheduler
|
||||
- `runtime`: implement `memcpy` for Cortex-M
|
||||
- `testing`: implement stub `testing.B` struct
|
||||
- `testing`: add common test logging methods such as Errorf/Fatalf/Printf
|
||||
* **targets**
|
||||
- `386`: add support for linux/386 syscalls
|
||||
- `atsamd21`: make SPI pins configurable so that multiple SPI ports can be
|
||||
used
|
||||
- `atsamd21`: correct issue with invalid first reading coming from ADC
|
||||
- `atsamd21`: add support for reset-to-bootloader using 1200baud over USB-CDC
|
||||
- `atsamd21`: make pin selection more flexible for peripherals
|
||||
- `atsamd21`: fix minimum delay in `time.Sleep`
|
||||
- `atsamd51`: fix minimum delay in `time.Sleep`
|
||||
- `nrf`: improve SPI write-only speed, by making use of double buffering
|
||||
- `stm32f103`: fix SPI frequency selection
|
||||
- `stm32f103`: add machine.Pin.Get method for reading GPIO values
|
||||
- `stm32f103`: allow board specific UART usage
|
||||
- `nucleo-f103rb`: add support for NUCLEO-F103RB board
|
||||
- `itsybitsy-m4`: add support for this board with a SAMD51 family chip
|
||||
- `cortex-m`: add support for `arm.SystemReset()`
|
||||
- `gameboy-advance`: add initial support for the GameBoy Advance
|
||||
- `wasm`: add `//go:wasm-module` magic comment to set the wasm module name
|
||||
- `wasm`: add syscall/js.valueSetIndex support
|
||||
- `wasm`: add syscall/js.valueInvoke support
|
||||
|
||||
0.7.1
|
||||
---
|
||||
* **targets**
|
||||
- `atsamd21`: add support for the `-port` flag in the flash subcommand
|
||||
|
||||
0.7.0
|
||||
---
|
||||
* **command line**
|
||||
- try more locations to find Clang built-in headers
|
||||
- add support for `tinygo test`
|
||||
- build current directory if no package is specified
|
||||
- support custom .json target spec with `-target` flag
|
||||
- use zversion.go to detect version of GOROOT version
|
||||
- make initial heap size configurable for some targets (currently WebAssembly
|
||||
only)
|
||||
* **cgo**
|
||||
- add support for bitfields using generated getters and setters
|
||||
- add support for anonymous structs
|
||||
* **compiler**
|
||||
- show an error instead of panicking on duplicate function definitions
|
||||
- allow packages like github.com/tinygo-org/tinygo/src/\* by aliasing it
|
||||
- remove `//go:volatile` support
|
||||
It has been replaced with the runtime/volatile package.
|
||||
- allow poiners in map keys
|
||||
- support non-constant syscall numbers
|
||||
- implement non-blocking selects
|
||||
- add support for the `-tags` flag
|
||||
- add support for `string` to `[]rune` conversion
|
||||
- implement a portable conservative garbage collector (with support for wasm)
|
||||
- add the `//go:noinline` pragma
|
||||
* **standard library**
|
||||
- `os`: add `os.Exit` and `syscall.Exit`
|
||||
- `os`: add several stubs
|
||||
- `runtime`: fix heap corruption in conservative GC
|
||||
- `runtime`: add support for math intrinsics where supported, massively
|
||||
speeding up some benchmarks
|
||||
- `testing`: add basic support for testing
|
||||
* **targets**
|
||||
- add support for a generic target that calls `__tinygo_*` functions for
|
||||
peripheral access
|
||||
- `arduino-nano33`: add support for this board
|
||||
- `hifive1`: add support for this RISC-V board
|
||||
- `reelboard`: add e-paper pins
|
||||
- `reelboard`: add `PowerSupplyActive` to enable voltage for on-board devices
|
||||
- `wasm`: put the stack at the start of linear memory, to detect stack
|
||||
overflows
|
||||
|
||||
0.6.0
|
||||
---
|
||||
* **command line**
|
||||
- some portability improvements
|
||||
- make `$GOROOT` more robust and configurable
|
||||
- check for Clang at the Homebrew install location as fallback
|
||||
* **compiler driver**
|
||||
- support multiple variations of LLVM commands, for non-Debian distributions
|
||||
* **compiler**
|
||||
- improve code quality in multiple ways
|
||||
- make panic configurable, adding trap on panic
|
||||
- refactor many internal parts of the compiler
|
||||
- print all errors encountered during compilation
|
||||
- implement calling function values of a named type
|
||||
- implement returning values from blocking functions
|
||||
- allow larger-than-int values to be sent across a channel
|
||||
- implement complex arithmetic
|
||||
- improve hashmap support
|
||||
- add debuginfo for function arguments
|
||||
- insert nil checks on stores (increasing code size)
|
||||
- implement volatile operations as compiler builtins
|
||||
- add `//go:inline` pragma
|
||||
- add build tags for the Go stdlib version
|
||||
* **cgo**
|
||||
- implement `char`, `enum` and `void*` types
|
||||
- support `#include` for builtin headers
|
||||
- improve typedef/struct/enum support
|
||||
- only include symbols that are necessary, for broader support
|
||||
- mark external function args as `nocapture`
|
||||
- implement support for some `#define` constants
|
||||
- implement support for multiple CGo files in a single package
|
||||
- **standard library**
|
||||
- `machine`: remove microbit matrix (moved to drivers repository)
|
||||
- `machine`: refactor pins to use `Pin` type instead of `GPIO`
|
||||
- `runtime`: print more interface types on panic, including `error`
|
||||
* **targets**
|
||||
- `arm`: print an error on HardFault (including stack overflows)
|
||||
- `atsamd21`: fix a bug in the ADC peripheral
|
||||
- `atsamd21`: add support for I2S
|
||||
- `feather-m0`: add support for this board
|
||||
- `nrf51`: fix a bug in I2C
|
||||
- `stm32f103xx`: fix a bug in I2C
|
||||
- `syscall`: implement `Exit` on unix
|
||||
- `trinket-m0`: add support for this board
|
||||
- `wasm`: make _main_ example smaller
|
||||
- `wasm`: don't cache wasm file in the server, for ease of debugging
|
||||
- `wasm`: work around bug #41508 that caused a deadlock while linking
|
||||
- `wasm`: add support for `js.FuncOf`
|
||||
|
||||
0.5.0
|
||||
---
|
||||
- **compiler driver**
|
||||
- use `wasm-ld` instead of `wasm-ld-8` on macOS
|
||||
- drop dependency on `llvm-ar`
|
||||
- fix linker script includes when running outside `TINYGOROOT`
|
||||
- **compiler**
|
||||
- switch to LLVM 8
|
||||
- add support for the Go 1.12 standard library (Go 1.11 is still supported)
|
||||
- work around lack of escape analysis due to nil checks
|
||||
- implement casting named structs and pointers to them
|
||||
- fix int casting to use the source signedness
|
||||
- fix some bugs around `make([]T, …)` with uncommon index types
|
||||
- some other optimizations
|
||||
- support interface asserts in interp for "math/rand" support
|
||||
- resolve all func value targets at compile time (wasm-only at the moment)
|
||||
- **cgo**
|
||||
- improve diagnostics
|
||||
- implement C `struct`, `union`, and arrays
|
||||
- fix CGo-related crash in libclang
|
||||
- implement `C.struct_` types
|
||||
- **targets**
|
||||
- all baremetal: pretend to be linux/arm instead of js/wasm
|
||||
- `avr`: improve `uintptr` support
|
||||
- `cortexm`: implement memmove intrinsic generated by LLVM
|
||||
- `cortexm`: use the lld linker instead of `arm-none-eabi-ld`
|
||||
- `darwin`: use custom syscall package that links to libSystem.dylib
|
||||
- `microbit`: add blink example
|
||||
- `samd21`: support I2C1
|
||||
- `samd21`: machine/atsamd21: correct pad/pin handling when using both UART
|
||||
and USBCDC interfaces at same time
|
||||
- `stm32f4discovery`: add support for this board
|
||||
- `wasm`: support async func values
|
||||
- `wasm`: improve documentation and add extra example
|
||||
|
||||
0.4.1
|
||||
---
|
||||
- **compiler**
|
||||
- fix `objcopy` replacement to include the .data section in the firmware image
|
||||
- use `llvm-ar-7` on Linux to fix the Docker image
|
||||
|
||||
0.4.0
|
||||
---
|
||||
- **compiler**
|
||||
- switch to the hardfloat ABI on ARM, which is more widely used
|
||||
- avoid a dependency on `objcopy` (`arm-none-eabi-objcopy` etc.)
|
||||
- fix a bug in `make([]T, n)` where `n` is 64-bits on a 32-bit platform
|
||||
- adapt to a change in the AVR backend in LLVM 8
|
||||
- directly support the .uf2 firmware format as used on Adafruit boards
|
||||
- fix a bug when calling `panic()` at init time outside of the main package
|
||||
- implement nil checks, which results in a ~5% increase in code size
|
||||
- inline slice bounds checking, which results in a ~1% decrease in code size
|
||||
- **targets**
|
||||
- `samd21`: fix a bug in port B pins
|
||||
- `samd21`: implement SPI peripheral
|
||||
- `samd21`: implement ADC peripheral
|
||||
- `stm32`: fix a bug in timekeeping
|
||||
- `wasm`: fix a bug in `wasm_exec.js` that caused corruption in linear memory
|
||||
when running on Node.js.
|
||||
|
||||
0.3.0
|
||||
---
|
||||
- **compiler**
|
||||
- remove old `-initinterp` flag
|
||||
- add support for macOS
|
||||
- **cgo**
|
||||
- add support for bool/float/complex types
|
||||
- **standard library**
|
||||
- `device/arm`: add support to disable/enable hardware interrupts
|
||||
- `machine`: add CPU frequency for nrf-based boards
|
||||
- `syscall`: add support for darwin/amd64
|
||||
- **targets**
|
||||
- `circuitplay_express`: add support for this board
|
||||
- `microbit`: add regular pin constants
|
||||
- `samd21`: fix time function for goroutine support
|
||||
- `samd21`: add support for USB-CDC (serial over USB)
|
||||
- `samd21`: add support for pins in port B
|
||||
- `samd21`: add support for pullup and pulldown pins
|
||||
- `wasm`: add support for Safari in example
|
||||
|
||||
|
||||
0.2.0
|
||||
---
|
||||
- **command line**
|
||||
- add version subcommand
|
||||
- **compiler**
|
||||
- fix a bug in floating point comparisons with NaN values
|
||||
- fix a bug when calling `panic` in package initialization code
|
||||
- add support for comparing `complex64` and `complex128`
|
||||
- **cgo**
|
||||
- add support for external globals
|
||||
- add support for pointers and function pointers
|
||||
- **standard library**
|
||||
- `fmt`: initial support, `fmt.Println` works
|
||||
- `math`: support for most/all functions
|
||||
- `os`: initial support (only stdin/stdout/stderr)
|
||||
- `reflect`: initial support
|
||||
- `syscall`: add support for amd64, arm, and arm64
|
||||
@@ -1,52 +0,0 @@
|
||||
# How to contribute
|
||||
|
||||
Thank you for your interest in improving TinyGo.
|
||||
|
||||
We would like your help to make this project better, so we appreciate any contributions. See if one of the following descriptions matches your situation:
|
||||
|
||||
### New to TinyGo
|
||||
|
||||
We'd love to get your feedback on getting started with TinyGo. Run into any difficulty, confusion, or anything else? You are not alone. We want to know about your experience, so we can help the next people. Please open a Github issue with your questions, or you can also get in touch directly with us on our Slack channel at [https://gophers.slack.com/messages/CDJD3SUP6](https://gophers.slack.com/messages/CDJD3SUP6).
|
||||
|
||||
### Something in TinyGo is not working as you expect
|
||||
|
||||
Please open a Github issue with your problem, and we will be happy to assist.
|
||||
|
||||
### Something in Go that you want/need does not appear to be in TinyGo
|
||||
|
||||
We probably have not implemented it yet. Please take a look at our [Roadmap](https://github.com/tinygo-org/tinygo/wiki/Roadmap). Your pull request adding the functionality to TinyGo would be greatly appreciated.
|
||||
|
||||
Please open a Github issue. We want to help, and also make sure that there is no duplications of efforts. Sometimes what you need is already being worked on by someone else.
|
||||
|
||||
A long tail of small (and large) language features haven't been implemented yet. In almost all cases, the compiler will show a `todo:` error from `compiler/compiler.go` when you try to use it. You can try implementing it, or open a bug report with a small code sample that fails to compile.
|
||||
|
||||
### Some specific hardware you want to use does not appear to be in TinyGo
|
||||
|
||||
As above, we probably have not implemented it yet. Your contribution adding the hardware support to TinyGo would be greatly appreciated.
|
||||
|
||||
Please start by opening a Github issue. We want to help you to help us to help you.
|
||||
|
||||
Lots of targets/boards are still unsupported. Adding an architecture often requires a few compiler changes, but if the architecture is supported you can try implementing support for a new chip or board in `src/runtime`. For details, see [this wiki entry on adding archs/chips/boards](https://github.com/tinygo-org/tinygo/wiki/Adding-a-new-board).
|
||||
|
||||
Microcontrollers have lots of peripherals (I2C, SPI, ADC, etc.) and many don't have an implementation yet in the `machine` package. Adding support for new peripherals is very useful.
|
||||
|
||||
## How to use our Github repository
|
||||
|
||||
The `master` branch of this repo will always have the latest released version of TinyGo. All of the active development work for the next release will take place in the `dev` branch. TinyGo will use semantic versioning and will create a tag/release for each release.
|
||||
|
||||
Here is how to contribute back some code or documentation:
|
||||
|
||||
- Fork repo
|
||||
- Create a feature branch off of the `dev` branch
|
||||
- Make some useful change
|
||||
- Make sure the tests still pass
|
||||
- Submit a pull request against the `dev` branch.
|
||||
- Be kind
|
||||
|
||||
## How to run tests
|
||||
|
||||
To run the tests:
|
||||
|
||||
```
|
||||
make test
|
||||
```
|
||||
@@ -1,17 +0,0 @@
|
||||
# This is the official list of TinyGo authors for copyright purposes.
|
||||
#
|
||||
# This file is not actively maintained.
|
||||
# To be included, send a change adding the individual or
|
||||
# company who owns a contribution's copyright.
|
||||
#
|
||||
# Names should be added to this file as one of
|
||||
# Organization's name
|
||||
# Individual's name <submission email address>
|
||||
# Individual's name <submission email address> <email2> <emailN>
|
||||
#
|
||||
# Please keep the list sorted.
|
||||
|
||||
Ayke van Laethem <aykevanlaethem@gmail.com>
|
||||
Daniel Esteban <conejo@conejo.me>
|
||||
Loon, LLC.
|
||||
Ron Evans <ron@hybridgroup.com>
|
||||
+34
-37
@@ -1,49 +1,46 @@
|
||||
# TinyGo base stage installs Go 1.13, LLVM 9 and the TinyGo compiler itself.
|
||||
FROM golang:1.13 AS tinygo-base
|
||||
# TinyGo base stage just installs LLVM 7 and the TinyGo compiler itself.
|
||||
FROM golang:latest AS tinygo-base
|
||||
|
||||
RUN wget -O- https://apt.llvm.org/llvm-snapshot.gpg.key| apt-key add - && \
|
||||
echo "deb http://apt.llvm.org/buster/ llvm-toolchain-buster-9 main" >> /etc/apt/sources.list && \
|
||||
echo "deb http://apt.llvm.org/stretch/ llvm-toolchain-stretch-7 main" >> /etc/apt/sources.list && \
|
||||
apt-get update && \
|
||||
apt-get install -y llvm-9-dev libclang-9-dev git
|
||||
apt-get install -y llvm-7-dev libclang-7-dev
|
||||
|
||||
COPY . /tinygo
|
||||
RUN wget -O- https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
|
||||
|
||||
# remove submodules directories and re-init them to fix any hard-coded paths
|
||||
# after copying the tinygo directory in the previous step.
|
||||
RUN cd /tinygo/ && \
|
||||
rm -rf ./lib/* && \
|
||||
git submodule update --init --recursive --force
|
||||
COPY . /go/src/github.com/aykevl/tinygo
|
||||
|
||||
RUN cd /tinygo/ && \
|
||||
go install /tinygo/
|
||||
RUN cd /go/src/github.com/aykevl/tinygo/ && \
|
||||
dep ensure --vendor-only && \
|
||||
go install /go/src/github.com/aykevl/tinygo/
|
||||
|
||||
# tinygo-wasm stage installs the needed dependencies to compile TinyGo programs for WASM.
|
||||
FROM tinygo-base AS tinygo-wasm
|
||||
|
||||
COPY --from=tinygo-base /go/bin/tinygo /go/bin/tinygo
|
||||
COPY --from=tinygo-base /tinygo/src /tinygo/src
|
||||
COPY --from=tinygo-base /tinygo/targets /tinygo/targets
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/src /go/src/github.com/aykevl/tinygo/src
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/targets /go/src/github.com/aykevl/tinygo/targets
|
||||
|
||||
RUN wget -O- https://apt.llvm.org/llvm-snapshot.gpg.key| apt-key add - && \
|
||||
echo "deb http://apt.llvm.org/buster/ llvm-toolchain-buster-9 main" >> /etc/apt/sources.list && \
|
||||
echo "deb http://apt.llvm.org/stretch/ llvm-toolchain-stretch-7 main" >> /etc/apt/sources.list && \
|
||||
apt-get update && \
|
||||
apt-get install -y libllvm9 lld-9
|
||||
apt-get install -y libllvm7 lld-7
|
||||
|
||||
# tinygo-avr stage installs the needed dependencies to compile TinyGo programs for AVR microcontrollers.
|
||||
FROM tinygo-base AS tinygo-avr
|
||||
|
||||
COPY --from=tinygo-base /go/bin/tinygo /go/bin/tinygo
|
||||
COPY --from=tinygo-base /tinygo/src /tinygo/src
|
||||
COPY --from=tinygo-base /tinygo/targets /tinygo/targets
|
||||
COPY --from=tinygo-base /tinygo/Makefile /tinygo/
|
||||
COPY --from=tinygo-base /tinygo/tools /tinygo/tools
|
||||
COPY --from=tinygo-base /tinygo/lib /tinygo/lib
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/src /go/src/github.com/aykevl/tinygo/src
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/targets /go/src/github.com/aykevl/tinygo/targets
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/Makefile /go/src/github.com/aykevl/tinygo/
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/tools /go/src/github.com/aykevl/tinygo/tools
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/lib /go/src/github.com/aykevl/tinygo/lib
|
||||
|
||||
RUN cd /tinygo/ && \
|
||||
RUN cd /go/src/github.com/aykevl/tinygo/ && \
|
||||
apt-get update && \
|
||||
apt-get install -y apt-utils python3 make binutils-avr gcc-avr avr-libc && \
|
||||
make gen-device-avr && \
|
||||
apt-get remove -y python3 && \
|
||||
apt-get remove -y python3 make && \
|
||||
apt-get autoremove -y && \
|
||||
apt-get clean
|
||||
|
||||
@@ -51,32 +48,32 @@ RUN cd /tinygo/ && \
|
||||
FROM tinygo-base AS tinygo-arm
|
||||
|
||||
COPY --from=tinygo-base /go/bin/tinygo /go/bin/tinygo
|
||||
COPY --from=tinygo-base /tinygo/src /tinygo/src
|
||||
COPY --from=tinygo-base /tinygo/targets /tinygo/targets
|
||||
COPY --from=tinygo-base /tinygo/Makefile /tinygo/
|
||||
COPY --from=tinygo-base /tinygo/tools /tinygo/tools
|
||||
COPY --from=tinygo-base /tinygo/lib /tinygo/lib
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/src /go/src/github.com/aykevl/tinygo/src
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/targets /go/src/github.com/aykevl/tinygo/targets
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/Makefile /go/src/github.com/aykevl/tinygo/
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/tools /go/src/github.com/aykevl/tinygo/tools
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/lib /go/src/github.com/aykevl/tinygo/lib
|
||||
|
||||
RUN cd /tinygo/ && \
|
||||
RUN cd /go/src/github.com/aykevl/tinygo/ && \
|
||||
apt-get update && \
|
||||
apt-get install -y apt-utils python3 make clang-9 && \
|
||||
apt-get install -y apt-utils python3 make binutils-arm-none-eabi clang-7 && \
|
||||
make gen-device-nrf && make gen-device-stm32 && \
|
||||
apt-get remove -y python3 && \
|
||||
apt-get remove -y python3 make && \
|
||||
apt-get autoremove -y && \
|
||||
apt-get clean
|
||||
|
||||
# tinygo-all stage installs the needed dependencies to compile TinyGo programs for all platforms.
|
||||
FROM tinygo-wasm AS tinygo-all
|
||||
|
||||
COPY --from=tinygo-base /tinygo/Makefile /tinygo/
|
||||
COPY --from=tinygo-base /tinygo/tools /tinygo/tools
|
||||
COPY --from=tinygo-base /tinygo/lib /tinygo/lib
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/Makefile /go/src/github.com/aykevl/tinygo/
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/tools /go/src/github.com/aykevl/tinygo/tools
|
||||
COPY --from=tinygo-base /go/src/github.com/aykevl/tinygo/lib /go/src/github.com/aykevl/tinygo/lib
|
||||
|
||||
RUN cd /tinygo/ && \
|
||||
RUN cd /go/src/github.com/aykevl/tinygo/ && \
|
||||
apt-get update && \
|
||||
apt-get install -y apt-utils python3 make clang-9 binutils-avr gcc-avr avr-libc && \
|
||||
apt-get install -y apt-utils python3 make binutils-arm-none-eabi clang-7 binutils-avr gcc-avr avr-libc && \
|
||||
make gen-device && \
|
||||
apt-get remove -y python3 && \
|
||||
apt-get remove -y python3 make && \
|
||||
apt-get autoremove -y && \
|
||||
apt-get clean
|
||||
|
||||
|
||||
Generated
+44
@@ -0,0 +1,44 @@
|
||||
# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
|
||||
|
||||
|
||||
[[projects]]
|
||||
branch = "master"
|
||||
digest = "1:f250e2a6d7e4f9ebc5ba37e5e2ec91b46eb1399ee43f2fdaeb20cd4fd1aeee59"
|
||||
name = "github.com/aykevl/go-llvm"
|
||||
packages = ["."]
|
||||
pruneopts = "UT"
|
||||
revision = "d8539684f173a591ea9474d6262ac47ef2277d64"
|
||||
|
||||
[[projects]]
|
||||
branch = "master"
|
||||
digest = "1:d1102ae84d8c9318db4ce2ad2673eb2bf54569ab2a4a5d57e70d8aef726b681d"
|
||||
name = "golang.org/x/tools"
|
||||
packages = [
|
||||
"go/ast/astutil",
|
||||
"go/buildutil",
|
||||
"go/gcexportdata",
|
||||
"go/internal/cgo",
|
||||
"go/internal/gcimporter",
|
||||
"go/loader",
|
||||
"go/packages",
|
||||
"go/ssa",
|
||||
"go/ssa/ssautil",
|
||||
"go/types/typeutil",
|
||||
"internal/fastwalk",
|
||||
"internal/gopathwalk",
|
||||
"internal/semver",
|
||||
]
|
||||
pruneopts = "UT"
|
||||
revision = "3e7aa9e59977626dc60433e9aeadf1bb63d28295"
|
||||
|
||||
[solve-meta]
|
||||
analyzer-name = "dep"
|
||||
analyzer-version = 1
|
||||
input-imports = [
|
||||
"github.com/aykevl/go-llvm",
|
||||
"golang.org/x/tools/go/loader",
|
||||
"golang.org/x/tools/go/ssa",
|
||||
"golang.org/x/tools/go/ssa/ssautil",
|
||||
]
|
||||
solver-name = "gps-cdcl"
|
||||
solver-version = 1
|
||||
+11
@@ -0,0 +1,11 @@
|
||||
[[constraint]]
|
||||
branch = "master"
|
||||
name = "github.com/aykevl/go-llvm"
|
||||
|
||||
[[constraint]]
|
||||
branch = "master"
|
||||
name = "golang.org/x/tools"
|
||||
|
||||
[prune]
|
||||
go-tests = true
|
||||
unused-packages = true
|
||||
@@ -1,7 +1,4 @@
|
||||
Copyright (c) 2018-2019 TinyGo Authors. All rights reserved.
|
||||
|
||||
TinyGo includes portions of the Go standard library.
|
||||
Copyright (c) 2009-2019 The Go Authors. All rights reserved.
|
||||
Copyright (c) 2018 Ayke van Laethem. All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
|
||||
@@ -1,275 +1,113 @@
|
||||
|
||||
# aliases
|
||||
all: tinygo
|
||||
all: tgo
|
||||
tgo: build/tgo
|
||||
|
||||
# Default build and source directories, as created by `make llvm-build`.
|
||||
LLVM_BUILDDIR ?= llvm-build
|
||||
CLANG_SRC ?= llvm-project/clang
|
||||
LLD_SRC ?= llvm-project/lld
|
||||
.PHONY: all tgo run-test run-blinky run-blinky2 clean fmt gen-device gen-device-nrf gen-device-avr
|
||||
|
||||
# Go binary and GOROOT to select
|
||||
GO ?= go
|
||||
export GOROOT = $(shell $(GO) env GOROOT)
|
||||
TARGET ?= unix
|
||||
|
||||
# md5sum binary
|
||||
MD5SUM = md5sum
|
||||
ifeq ($(TARGET),unix)
|
||||
# Regular *nix system.
|
||||
|
||||
# Python binary
|
||||
PYTHON ?= python
|
||||
else ifeq ($(TARGET),pca10040)
|
||||
# PCA10040: nRF52832 development board
|
||||
OBJCOPY = arm-none-eabi-objcopy
|
||||
TGOFLAGS += -target $(TARGET)
|
||||
|
||||
# tinygo binary for tests
|
||||
TINYGO ?= tinygo
|
||||
else ifeq ($(TARGET),microbit)
|
||||
# BBC micro:bit
|
||||
OBJCOPY = arm-none-eabi-objcopy
|
||||
TGOFLAGS += -target $(TARGET)
|
||||
|
||||
# Use CCACHE for LLVM if possible
|
||||
ifneq (, $(shell which ccache))
|
||||
LLVM_OPTION += '-DLLVM_CCACHE_BUILD=ON'
|
||||
endif
|
||||
else ifeq ($(TARGET),reelboard)
|
||||
# reel board
|
||||
OBJCOPY = arm-none-eabi-objcopy
|
||||
TGOFLAGS += -target $(TARGET)
|
||||
|
||||
else ifeq ($(TARGET),bluepill)
|
||||
# "blue pill" development board
|
||||
# See: https://wiki.stm32duino.com/index.php?title=Blue_Pill
|
||||
OBJCOPY = arm-none-eabi-objcopy
|
||||
TGOFLAGS += -target $(TARGET)
|
||||
|
||||
else ifeq ($(TARGET),arduino)
|
||||
OBJCOPY = avr-objcopy
|
||||
TGOFLAGS += -target $(TARGET)
|
||||
|
||||
# Allow enabling LLVM assertions
|
||||
ifeq (1, $(ASSERT))
|
||||
LLVM_OPTION += '-DLLVM_ENABLE_ASSERTIONS=ON'
|
||||
else
|
||||
LLVM_OPTION += '-DLLVM_ENABLE_ASSERTIONS=OFF'
|
||||
$(error Unknown target)
|
||||
|
||||
endif
|
||||
|
||||
.PHONY: all tinygo test $(LLVM_BUILDDIR) llvm-source clean fmt gen-device gen-device-nrf gen-device-avr
|
||||
|
||||
LLVM_COMPONENTS = all-targets analysis asmparser asmprinter bitreader bitwriter codegen core coroutines debuginfodwarf executionengine instrumentation interpreter ipo irreader linker lto mc mcjit objcarcopts option profiledata scalaropts support target
|
||||
|
||||
ifeq ($(OS),Windows_NT)
|
||||
EXE = .exe
|
||||
START_GROUP = -Wl,--start-group
|
||||
END_GROUP = -Wl,--end-group
|
||||
run-test: build/test
|
||||
./build/test
|
||||
|
||||
# LLVM compiled using MinGW on Windows appears to have problems with threads.
|
||||
# Without this flag, linking results in errors like these:
|
||||
# libLLVMSupport.a(Threading.cpp.obj):Threading.cpp:(.text+0x55): undefined reference to `std::thread::hardware_concurrency()'
|
||||
LLVM_OPTION += -DLLVM_ENABLE_THREADS=OFF
|
||||
run-blinky: run-blinky2
|
||||
run-blinky2: build/blinky2
|
||||
./build/blinky2
|
||||
|
||||
CGO_LDFLAGS += -static -static-libgcc -static-libstdc++
|
||||
CGO_LDFLAGS_EXTRA += -lversion
|
||||
|
||||
# Build libclang manually because the CMake-based build system on Windows
|
||||
# doesn't allow building libclang as a static library.
|
||||
LIBCLANG_PATH = $(abspath build/libclang-custom.a)
|
||||
LIBCLANG_FILES = $(abspath $(wildcard $(LLVM_BUILDDIR)/tools/clang/tools/libclang/CMakeFiles/libclang.dir/*.cpp.obj))
|
||||
|
||||
# Add the libclang dependency to the tinygo binary target.
|
||||
tinygo: $(LIBCLANG_PATH)
|
||||
test: $(LIBCLANG_PATH)
|
||||
# Build libclang.
|
||||
$(LIBCLANG_PATH): $(LIBCLANG_FILES)
|
||||
@mkdir -p build
|
||||
ar rcs $(LIBCLANG_PATH) $^
|
||||
|
||||
else ifeq ($(shell uname -s),Darwin)
|
||||
MD5SUM = md5
|
||||
LIBCLANG_PATH = $(abspath $(LLVM_BUILDDIR))/lib/libclang.a
|
||||
else
|
||||
LIBCLANG_PATH = $(abspath $(LLVM_BUILDDIR))/lib/libclang.a
|
||||
START_GROUP = -Wl,--start-group
|
||||
END_GROUP = -Wl,--end-group
|
||||
ifeq ($(TARGET),pca10040)
|
||||
flash-%: build/%.hex
|
||||
nrfjprog -f nrf52 --sectorerase --program $< --reset
|
||||
else ifeq ($(TARGET),microbit)
|
||||
flash-%: build/%.hex
|
||||
openocd -f interface/cmsis-dap.cfg -f target/nrf51.cfg -c 'program $< reset exit'
|
||||
else ifeq ($(TARGET),reelboard)
|
||||
flash-%: build/%.hex
|
||||
openocd -f interface/cmsis-dap.cfg -f target/nrf51.cfg -c 'program $< reset exit'
|
||||
else ifeq ($(TARGET),arduino)
|
||||
flash-%: build/%.hex
|
||||
avrdude -c arduino -p atmega328p -P /dev/ttyACM0 -U flash:w:$<
|
||||
else ifeq ($(TARGET),bluepill)
|
||||
flash-%: build/%.hex
|
||||
openocd -f interface/stlink-v2.cfg -f target/stm32f1x.cfg -c 'program $< reset exit'
|
||||
endif
|
||||
|
||||
CLANG_LIBS = $(START_GROUP) -lclangAnalysis -lclangARCMigrate -lclangAST -lclangASTMatchers -lclangBasic -lclangCodeGen -lclangCrossTU -lclangDriver -lclangDynamicASTMatchers -lclangEdit -lclangFormat -lclangFrontend -lclangFrontendTool -lclangHandleCXX -lclangHandleLLVM -lclangIndex -lclangLex -lclangParse -lclangRewrite -lclangRewriteFrontend -lclangSema -lclangSerialization -lclangStaticAnalyzerCheckers -lclangStaticAnalyzerCore -lclangStaticAnalyzerFrontend -lclangTooling -lclangToolingASTDiff -lclangToolingCore -lclangToolingInclusions $(END_GROUP) -lstdc++
|
||||
|
||||
LLD_LIBS = $(START_GROUP) -llldCOFF -llldCommon -llldCore -llldDriver -llldELF -llldMachO -llldMinGW -llldReaderWriter -llldWasm -llldYAML $(END_GROUP)
|
||||
|
||||
|
||||
# For static linking.
|
||||
ifneq ("$(wildcard $(LLVM_BUILDDIR)/bin/llvm-config*)","")
|
||||
CGO_CPPFLAGS=$(shell $(LLVM_BUILDDIR)/bin/llvm-config --cppflags) -I$(abspath $(CLANG_SRC))/include -I$(abspath $(LLD_SRC))/include
|
||||
CGO_CXXFLAGS=-std=c++11
|
||||
CGO_LDFLAGS+=$(LIBCLANG_PATH) -std=c++11 -L$(abspath $(LLVM_BUILDDIR)/lib) $(CLANG_LIBS) $(LLD_LIBS) $(shell $(LLVM_BUILDDIR)/bin/llvm-config --ldflags --libs --system-libs $(LLVM_COMPONENTS)) -lstdc++ $(CGO_LDFLAGS_EXTRA)
|
||||
endif
|
||||
|
||||
|
||||
clean:
|
||||
@rm -rf build
|
||||
|
||||
FMT_PATHS = ./*.go builder cgo compiler interp ir loader src/device/arm src/examples src/machine src/os src/reflect src/runtime src/sync src/syscall src/internal/reflectlite transform
|
||||
fmt:
|
||||
@gofmt -l -w $(FMT_PATHS)
|
||||
fmt-check:
|
||||
@unformatted=$$(gofmt -l $(FMT_PATHS)); [ -z "$$unformatted" ] && exit 0; echo "Unformatted:"; for fn in $$unformatted; do echo " $$fn"; done; exit 1
|
||||
|
||||
|
||||
gen-device: gen-device-avr gen-device-nrf gen-device-sam gen-device-sifive gen-device-stm32
|
||||
|
||||
gen-device-avr:
|
||||
$(PYTHON) ./tools/gen-device-avr.py lib/avr/packs/atmega src/device/avr/
|
||||
$(PYTHON) ./tools/gen-device-avr.py lib/avr/packs/tiny src/device/avr/
|
||||
GO111MODULE=off $(GO) fmt ./src/device/avr
|
||||
|
||||
gen-device-nrf:
|
||||
$(PYTHON) ./tools/gen-device-svd.py lib/nrfx/mdk/ src/device/nrf/ --source=https://github.com/NordicSemiconductor/nrfx/tree/master/mdk
|
||||
GO111MODULE=off $(GO) fmt ./src/device/nrf
|
||||
|
||||
gen-device-sam:
|
||||
$(PYTHON) ./tools/gen-device-svd.py lib/cmsis-svd/data/Atmel/ src/device/sam/ --source=https://github.com/posborne/cmsis-svd/tree/master/data/Atmel
|
||||
GO111MODULE=off $(GO) fmt ./src/device/sam
|
||||
|
||||
gen-device-sifive:
|
||||
$(PYTHON) ./tools/gen-device-svd.py lib/cmsis-svd/data/SiFive-Community/ src/device/sifive/ --source=https://github.com/posborne/cmsis-svd/tree/master/data/SiFive-Community
|
||||
GO111MODULE=off $(GO) fmt ./src/device/sifive
|
||||
|
||||
gen-device-stm32:
|
||||
$(PYTHON) ./tools/gen-device-svd.py lib/cmsis-svd/data/STMicro/ src/device/stm32/ --source=https://github.com/posborne/cmsis-svd/tree/master/data/STMicro
|
||||
GO111MODULE=off $(GO) fmt ./src/device/stm32
|
||||
|
||||
|
||||
# Get LLVM sources.
|
||||
llvm-project/README.md:
|
||||
git clone -b release/9.x https://github.com/llvm/llvm-project
|
||||
llvm-source: llvm-project/README.md
|
||||
|
||||
# Configure LLVM.
|
||||
TINYGO_SOURCE_DIR=$(shell pwd)
|
||||
$(LLVM_BUILDDIR)/build.ninja: llvm-source
|
||||
mkdir -p $(LLVM_BUILDDIR); cd $(LLVM_BUILDDIR); cmake -G Ninja $(TINYGO_SOURCE_DIR)/llvm-project/llvm "-DLLVM_TARGETS_TO_BUILD=X86;ARM;AArch64;RISCV;WebAssembly" "-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=AVR" -DCMAKE_BUILD_TYPE=Release -DLIBCLANG_BUILD_STATIC=ON -DLLVM_ENABLE_TERMINFO=OFF -DLLVM_ENABLE_ZLIB=OFF -DLLVM_ENABLE_PROJECTS="clang;lld" -DLLVM_TOOL_CLANG_TOOLS_EXTRA_BUILD=OFF $(LLVM_OPTION)
|
||||
|
||||
# Build LLVM.
|
||||
$(LLVM_BUILDDIR): $(LLVM_BUILDDIR)/build.ninja
|
||||
cd $(LLVM_BUILDDIR); ninja
|
||||
|
||||
|
||||
# Build the Go compiler.
|
||||
tinygo:
|
||||
@if [ ! -f "$(LLVM_BUILDDIR)/bin/llvm-config" ]; then echo "Fetch and build LLVM first by running:"; echo " make llvm-source"; echo " make $(LLVM_BUILDDIR)"; exit 1; fi
|
||||
CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GO) build -o build/tinygo$(EXE) -tags byollvm .
|
||||
@go fmt . ./compiler ./interp ./loader ./ir ./src/device/arm ./src/examples/* ./src/machine ./src/runtime ./src/sync
|
||||
@go fmt ./testdata/*.go
|
||||
|
||||
test:
|
||||
CGO_CPPFLAGS="$(CGO_CPPFLAGS)" CGO_CXXFLAGS="$(CGO_CXXFLAGS)" CGO_LDFLAGS="$(CGO_LDFLAGS)" $(GO) test -v -tags byollvm ./cgo ./compileopts ./interp ./transform .
|
||||
@go test -v .
|
||||
|
||||
tinygo-test:
|
||||
cd tests/tinygotest && tinygo test
|
||||
gen-device: gen-device-avr gen-device-nrf gen-device-sam gen-device-stm32
|
||||
|
||||
.PHONY: smoketest
|
||||
smoketest:
|
||||
$(TINYGO) version
|
||||
# test all examples
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10040 examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10040 examples/adc
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10040 examples/blinkm
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10040 examples/blinky2
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10040 examples/button
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10040 examples/button2
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10040 examples/echo
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=circuitplay-express examples/i2s
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10040 examples/mcp3008
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=microbit examples/microbit-blink
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10040 examples/pwm
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10040 examples/serial
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10040 examples/systick
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10040 examples/test
|
||||
@$(MD5SUM) test.hex
|
||||
# test simulated boards on play.tinygo.org
|
||||
$(TINYGO) build -o test.wasm -tags=arduino examples/blinky1
|
||||
@$(MD5SUM) test.wasm
|
||||
$(TINYGO) build -o test.wasm -tags=hifive1b examples/blinky1
|
||||
@$(MD5SUM) test.wasm
|
||||
$(TINYGO) build -o test.wasm -tags=reelboard examples/blinky1
|
||||
@$(MD5SUM) test.wasm
|
||||
$(TINYGO) build -o test.wasm -tags=pca10040 examples/blinky2
|
||||
@$(MD5SUM) test.wasm
|
||||
$(TINYGO) build -o test.wasm -tags=pca10056 examples/blinky2
|
||||
@$(MD5SUM) test.wasm
|
||||
# test all targets/boards
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10040-s132v6 examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=microbit examples/echo
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=nrf52840-mdk examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10031 examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=bluepill examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=reelboard examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=reelboard examples/blinky2
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10056 examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10056 examples/blinky2
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=itsybitsy-m0 examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=feather-m0 examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=trinket-m0 examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=circuitplay-express examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=stm32f4disco examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=stm32f4disco examples/blinky2
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=circuitplay-express examples/i2s
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.gba -target=gameboy-advance examples/gba-display
|
||||
@$(MD5SUM) test.gba
|
||||
$(TINYGO) build -size short -o test.hex -target=itsybitsy-m4 examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=feather-m4 examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=metro-m4-airlift examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=nucleo-f103rb examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pinetime-devkit0 examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=x9pro examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=pca10056-s140v7 examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
ifneq ($(AVR), 0)
|
||||
$(TINYGO) build -size short -o test.hex -target=arduino examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
$(TINYGO) build -size short -o test.hex -target=digispark examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
endif
|
||||
ifneq ($(RISCV), 0)
|
||||
$(TINYGO) build -size short -o test.hex -target=hifive1b examples/blinky1
|
||||
@$(MD5SUM) test.hex
|
||||
endif
|
||||
$(TINYGO) build -o wasm.wasm -target=wasm examples/wasm/export
|
||||
$(TINYGO) build -o wasm.wasm -target=wasm examples/wasm/main
|
||||
gen-device-avr:
|
||||
./tools/gen-device-avr.py lib/avr/packs/atmega src/device/avr/
|
||||
./tools/gen-device-avr.py lib/avr/packs/tiny src/device/avr/
|
||||
go fmt ./src/device/avr
|
||||
|
||||
release: tinygo gen-device
|
||||
@mkdir -p build/release/tinygo/bin
|
||||
@mkdir -p build/release/tinygo/lib/clang/include
|
||||
@mkdir -p build/release/tinygo/lib/CMSIS/CMSIS
|
||||
@mkdir -p build/release/tinygo/lib/compiler-rt/lib
|
||||
@mkdir -p build/release/tinygo/lib/nrfx
|
||||
@mkdir -p build/release/tinygo/pkg/armv6m-none-eabi
|
||||
@mkdir -p build/release/tinygo/pkg/armv7m-none-eabi
|
||||
@mkdir -p build/release/tinygo/pkg/armv7em-none-eabi
|
||||
@echo copying source files
|
||||
@cp -p build/tinygo$(EXE) build/release/tinygo/bin
|
||||
@cp -p $(abspath $(CLANG_SRC))/lib/Headers/*.h build/release/tinygo/lib/clang/include
|
||||
@cp -rp lib/CMSIS/CMSIS/Include build/release/tinygo/lib/CMSIS/CMSIS
|
||||
@cp -rp lib/CMSIS/README.md build/release/tinygo/lib/CMSIS
|
||||
@cp -rp lib/compiler-rt/lib/builtins build/release/tinygo/lib/compiler-rt/lib
|
||||
@cp -rp lib/compiler-rt/LICENSE.TXT build/release/tinygo/lib/compiler-rt
|
||||
@cp -rp lib/compiler-rt/README.txt build/release/tinygo/lib/compiler-rt
|
||||
@cp -rp lib/nrfx/* build/release/tinygo/lib/nrfx
|
||||
@cp -rp src build/release/tinygo/src
|
||||
@cp -rp targets build/release/tinygo/targets
|
||||
./build/tinygo build-builtins -target=armv6m-none-eabi -o build/release/tinygo/pkg/armv6m-none-eabi/compiler-rt.a
|
||||
./build/tinygo build-builtins -target=armv7m-none-eabi -o build/release/tinygo/pkg/armv7m-none-eabi/compiler-rt.a
|
||||
./build/tinygo build-builtins -target=armv7em-none-eabi -o build/release/tinygo/pkg/armv7em-none-eabi/compiler-rt.a
|
||||
tar -czf build/release.tar.gz -C build/release tinygo
|
||||
gen-device-nrf:
|
||||
./tools/gen-device-svd.py lib/nrfx/mdk/ src/device/nrf/ --source=https://github.com/NordicSemiconductor/nrfx/tree/master/mdk
|
||||
go fmt ./src/device/nrf
|
||||
|
||||
gen-device-sam:
|
||||
./tools/gen-device-svd.py lib/cmsis-svd/data/Atmel/ src/device/sam/ --source=https://github.com/posborne/cmsis-svd/tree/master/data/Atmel
|
||||
go fmt ./src/device/sam
|
||||
|
||||
gen-device-stm32:
|
||||
./tools/gen-device-svd.py lib/cmsis-svd/data/STMicro/ src/device/stm32/ --source=https://github.com/posborne/cmsis-svd/tree/master/data/STMicro
|
||||
go fmt ./src/device/stm32
|
||||
|
||||
# Build the Go compiler.
|
||||
build/tgo: *.go compiler/*.go interp/*.go loader/*.go ir/*.go
|
||||
@mkdir -p build
|
||||
go build -o build/tgo -i .
|
||||
|
||||
# Binary that can run on the host.
|
||||
build/%: src/examples/% src/examples/%/*.go build/tgo src/runtime/*.go
|
||||
./build/tgo build $(TGOFLAGS) -size=short -o $@ $(subst src/,,$<)
|
||||
|
||||
# ELF file that can run on a microcontroller.
|
||||
build/%.elf: src/examples/% src/examples/%/*.go build/tgo src/runtime/*.go
|
||||
./build/tgo build $(TGOFLAGS) -size=short -o $@ $(subst src/,,$<)
|
||||
|
||||
# Convert executable to Intel hex file (for flashing).
|
||||
build/%.hex: build/%.elf
|
||||
$(OBJCOPY) -O ihex $^ $@
|
||||
|
||||
@@ -1,82 +1,144 @@
|
||||
# TinyGo - Go compiler for small places
|
||||
# TinyGo - Go compiler for microcontrollers
|
||||
|
||||
[](https://circleci.com/gh/tinygo-org/tinygo/tree/dev) [](https://dev.azure.com/tinygo/tinygo/_build/latest?definitionId=1&branchName=dev)
|
||||
[](https://travis-ci.com/aykevl/tinygo)
|
||||
|
||||
TinyGo is a Go compiler intended for use in small places such as microcontrollers, WebAssembly (Wasm), and command-line tools.
|
||||
> We never expected Go to be an embedded language and so it's got serious
|
||||
> problems [...].
|
||||
|
||||
It reuses libraries used by the [Go language tools](https://golang.org/pkg/go/) alongside [LLVM](http://llvm.org) to provide an alternative way to compile programs written in the Go programming language.
|
||||
-- Rob Pike, [GopherCon 2014 Opening Keynote](https://www.youtube.com/watch?v=VoS7DsT1rdM&feature=youtu.be&t=2799)
|
||||
|
||||
Here is an example program that blinks the built-in LED when run directly on any supported board with onboard LED:
|
||||
TinyGo is a project to bring Go to microcontrollers and small systems with a
|
||||
single processor core. It is similar to [emgo](https://github.com/ziutek/emgo)
|
||||
but a major difference is that I want to keep the Go memory model (which implies
|
||||
garbage collection of some sort). Another difference is that TinyGo uses LLVM
|
||||
internally instead of emitting C, which hopefully leads to smaller and more
|
||||
efficient code and certainly leads to more flexibility.
|
||||
|
||||
My original reasoning was: if [Python](https://micropython.org/) can run on
|
||||
microcontrollers, then certainly [Go](https://golang.org/) should be able to and
|
||||
run on even lower level micros.
|
||||
|
||||
Example program (blinky):
|
||||
|
||||
```go
|
||||
package main
|
||||
|
||||
import (
|
||||
"machine"
|
||||
"time"
|
||||
"machine"
|
||||
"time"
|
||||
)
|
||||
|
||||
func main() {
|
||||
led := machine.LED
|
||||
led.Configure(machine.PinConfig{Mode: machine.PinOutput})
|
||||
for {
|
||||
led.Low()
|
||||
time.Sleep(time.Millisecond * 1000)
|
||||
led := machine.GPIO{machine.LED}
|
||||
led.Configure(machine.GPIOConfig{Mode: machine.GPIO_OUTPUT})
|
||||
for {
|
||||
led.Low()
|
||||
time.Sleep(time.Millisecond * 1000)
|
||||
|
||||
led.High()
|
||||
time.Sleep(time.Millisecond * 1000)
|
||||
}
|
||||
led.High()
|
||||
time.Sleep(time.Millisecond * 1000)
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
The above program can be compiled and run without modification on an Arduino Uno, an Adafruit ItsyBitsy M0, or any of the supported boards that have a built-in LED, just by setting the correct TinyGo compiler target. For example, this compiles and flashes an Arduino Uno:
|
||||
Currently supported features:
|
||||
|
||||
```shell
|
||||
tinygo flash -target arduino examples/blinky1
|
||||
```
|
||||
* control flow
|
||||
* many (but not all) basic types: most ints, floats, strings, structs
|
||||
* function calling
|
||||
* interfaces for basic types (with type switches and asserts)
|
||||
* goroutines (very initial support)
|
||||
* function pointers (non-blocking)
|
||||
* interface methods
|
||||
* standard library (but most packages won't work due to missing language
|
||||
features)
|
||||
* slices (partially)
|
||||
* maps (very rough, unfinished)
|
||||
* defer
|
||||
* closures
|
||||
* bound methods
|
||||
* complex numbers (except for arithmetic)
|
||||
|
||||
Not yet supported:
|
||||
|
||||
* complex arithmetic
|
||||
* garbage collection
|
||||
* recover
|
||||
* channels
|
||||
* introspection (if it ever gets implemented)
|
||||
* ...
|
||||
|
||||
## Installation
|
||||
|
||||
See the [getting started instructions](https://tinygo.org/getting-started/) for information on how to install TinyGo, as well as how to run the TinyGo compiler using our Docker container.
|
||||
See the [getting started instructions](https://tinygo.org/getting-started/).
|
||||
|
||||
## Supported boards/targets
|
||||
### Running with Docker
|
||||
|
||||
You can compile TinyGo programs for microcontrollers, WebAssembly and Linux.
|
||||
A docker container exists for easy access to the `tinygo` CLI:
|
||||
|
||||
The following 22 microcontroller boards are currently supported:
|
||||
```sh
|
||||
$ docker run --rm -v $(pwd):/src tinygo/tinygo tinygo build -o /src/wasm.wasm -target wasm examples/wasm
|
||||
```
|
||||
|
||||
* [Adafruit Circuit Playground Express](https://www.adafruit.com/product/3333)
|
||||
* [Adafruit Feather M0](https://www.adafruit.com/product/2772)
|
||||
* [Adafruit Feather M4](https://www.adafruit.com/product/3857)
|
||||
* [Adafruit ItsyBitsy M0](https://www.adafruit.com/product/3727)
|
||||
* [Adafruit ItsyBitsy M4](https://www.adafruit.com/product/3800)
|
||||
* [Adafruit Metro M4 Express Airlift](https://www.adafruit.com/product/4000)
|
||||
* [Adafruit Trinket M0](https://www.adafruit.com/product/3500)
|
||||
* [Arduino Nano33 IoT](https://store.arduino.cc/nano-33-iot)
|
||||
* [Arduino Uno](https://store.arduino.cc/arduino-uno-rev3)
|
||||
* [BBC micro:bit](https://microbit.org/)
|
||||
* [Digispark](http://digistump.com/products/1)
|
||||
* [Game Boy Advance](https://en.wikipedia.org/wiki/Game_Boy_Advance)
|
||||
* [Makerdiary nRF52840-MDK](https://wiki.makerdiary.com/nrf52840-mdk/)
|
||||
* [Nordic Semiconductor PCA10031](https://www.nordicsemi.com/eng/Products/nRF51-Dongle)
|
||||
* [Nordic Semiconductor PCA10040](https://www.nordicsemi.com/eng/Products/Bluetooth-low-energy/nRF52-DK)
|
||||
* [Nordic Semiconductor PCA10056](https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52840-DK)
|
||||
* [Phytec reel board](https://www.phytec.eu/product-eu/internet-of-things/reelboard/)
|
||||
* [SiFIve HiFive1](https://www.sifive.com/boards/hifive1)
|
||||
* [ST Micro "Nucleo F103RB"](https://www.st.com/en/evaluation-tools/nucleo-f103rb.html)
|
||||
* [ST Micro STM32F103XX "Bluepill"](http://wiki.stm32duino.com/index.php?title=Blue_Pill)
|
||||
* [ST Micro STM32F407 "Discovery"](https://www.st.com/en/evaluation-tools/stm32f4discovery.html)
|
||||
* [X9 Pro smartwatch](https://github.com/curtpw/nRF5x-device-reverse-engineering/tree/master/X9-nrf52832-activity-tracker/)
|
||||
Note that you cannot run `tinygo flash` from inside the docker container,
|
||||
so it is less useful for microcontroller development.
|
||||
|
||||
For more information, see [this list of boards](https://tinygo.org/microcontrollers/). Pull requests for additional support are welcome!
|
||||
## Supported targets
|
||||
|
||||
## Currently supported features:
|
||||
The following architectures/systems are currently supported:
|
||||
|
||||
For a description of currently supported Go language features, please see [https://tinygo.org/lang-support/](https://tinygo.org/lang-support/).
|
||||
* ARM (Cortex-M)
|
||||
* AVR (Arduino Uno)
|
||||
* Linux
|
||||
* WebAssembly
|
||||
|
||||
For more information, see [this list of targets and
|
||||
boards](https://tinygo.org/targets/). Pull requests for
|
||||
broader support are welcome!
|
||||
|
||||
## Analysis and optimizations
|
||||
|
||||
The goal is to reduce code size (and increase performance) by performing all
|
||||
kinds of whole-program analysis passes. The official Go compiler doesn't do a
|
||||
whole lot of analysis (except for escape analysis) because it needs to be fast,
|
||||
but embedded programs are necessarily smaller so it becomes practical. And I
|
||||
think especially program size can be reduced by a large margin when actually
|
||||
trying to optimize for it.
|
||||
|
||||
Implemented compiler passes:
|
||||
|
||||
* Analyse which functions are blocking. Blocking functions are functions that
|
||||
call sleep, chan send, etc. Its parents are also blocking.
|
||||
* Analyse whether the scheduler is needed. It is only needed when there are
|
||||
`go` statements for blocking functions.
|
||||
* Analyse whether a given type switch or type assert is possible with
|
||||
[type-based alias analysis](https://en.wikipedia.org/wiki/Alias_analysis#Type-based_alias_analysis).
|
||||
I would like to use flow-based alias analysis in the future, if feasible.
|
||||
* Do basic dead code elimination of functions. This pass makes later passes
|
||||
better and probably improves compile time as well.
|
||||
|
||||
## Scope
|
||||
|
||||
Goals:
|
||||
|
||||
* Have very small binary sizes. Don't pay for what you don't use.
|
||||
* Support for most common microcontroller boards.
|
||||
* Be usable on the web using WebAssembly.
|
||||
* Good CGo support, with no more overhead than a regular function call.
|
||||
* Support most standard library packages and compile most Go code without
|
||||
modification.
|
||||
|
||||
Non-goals:
|
||||
|
||||
* Using more than one core.
|
||||
* Be efficient while using zillions of goroutines. However, good goroutine
|
||||
support is certainly a goal.
|
||||
* Be as fast as `gc`. However, LLVM will probably be better at optimizing
|
||||
certain things so TinyGo might actually turn out to be faster for number
|
||||
crunching.
|
||||
* Be able to compile every Go program out there.
|
||||
|
||||
## Documentation
|
||||
|
||||
Documentation is located on our web site at [https://tinygo.org/](https://tinygo.org/).
|
||||
Documentation is currently maintained on a dedicated web site located at [https://tinygo.org/](https://tinygo.org/).
|
||||
|
||||
You can find the web site code at [https://github.com/tinygo-org/tinygo-site](https://github.com/tinygo-org/tinygo-site).
|
||||
|
||||
@@ -91,37 +153,26 @@ should arrive fairly quickly (under 1 min): https://invite.slack.golangbridge.or
|
||||
|
||||
## Contributing
|
||||
|
||||
Your contributions are welcome!
|
||||
Patches are welcome!
|
||||
|
||||
Please take a look at our [CONTRIBUTING.md](./CONTRIBUTING.md) document for details.
|
||||
If you want to contribute, here are some suggestions:
|
||||
|
||||
## Project Scope
|
||||
|
||||
Goals:
|
||||
|
||||
* Have very small binary sizes. Don't pay for what you don't use.
|
||||
* Support for most common microcontroller boards.
|
||||
* Be usable on the web using WebAssembly.
|
||||
* Good CGo support, with no more overhead than a regular function call.
|
||||
* Support most standard library packages and compile most Go code without modification.
|
||||
|
||||
Non-goals:
|
||||
|
||||
* Using more than one core.
|
||||
* Be efficient while using zillions of goroutines. However, good goroutine support is certainly a goal.
|
||||
* Be as fast as `gc`. However, LLVM will probably be better at optimizing certain things so TinyGo might actually turn out to be faster for number crunching.
|
||||
* Be able to compile every Go program out there.
|
||||
|
||||
## Why this project exists
|
||||
|
||||
> We never expected Go to be an embedded language and so its got serious problems...
|
||||
|
||||
-- Rob Pike, [GopherCon 2014 Opening Keynote](https://www.youtube.com/watch?v=VoS7DsT1rdM&feature=youtu.be&t=2799)
|
||||
|
||||
TinyGo is a project to bring Go to microcontrollers and small systems with a single processor core. It is similar to [emgo](https://github.com/ziutek/emgo) but a major difference is that we want to keep the Go memory model (which implies garbage collection of some sort). Another difference is that TinyGo uses LLVM internally instead of emitting C, which hopefully leads to smaller and more efficient code and certainly leads to more flexibility.
|
||||
|
||||
The original reasoning was: if [Python](https://micropython.org/) can run on microcontrollers, then certainly [Go](https://golang.org/) should be able to run on even lower level micros.
|
||||
* A long tail of small (and large) language features haven't been implemented
|
||||
yet. In almost all cases, the compiler will show a `todo:` error from
|
||||
`compiler/compiler.go` when you try to use it. You can try implementing it,
|
||||
or open a bug report with a small code sample that fails to compile.
|
||||
* Lots of targets/boards are still unsupported. Adding an architecture often
|
||||
requires a few compiler changes, but if the architecture is supported you
|
||||
can try implementing support for a new chip or board in `src/runtime`. For
|
||||
details, see [this wiki entry on adding
|
||||
archs/chips/boards](https://github.com/aykevl/tinygo/wiki/Adding-a-new-board).
|
||||
* Microcontrollers have lots of peripherals and many don't have an
|
||||
implementation yet in the `machine` package. Adding support for new
|
||||
peripherals is very useful.
|
||||
* Just raising bugs for things you'd like to see implemented is also a form of
|
||||
contributing! It helps prioritization.
|
||||
|
||||
## License
|
||||
|
||||
This project is licensed under the BSD 3-clause license, just like the [Go project](https://golang.org/LICENSE) itself.
|
||||
This project is licensed under the BSD 3-clause license, just like the
|
||||
[Go project](https://golang.org/LICENSE) itself.
|
||||
|
||||
@@ -1,74 +0,0 @@
|
||||
# Avoid lengthy LLVM rebuilds on each newly pushed branch. Pull requests will
|
||||
# be built anyway.
|
||||
trigger:
|
||||
- master
|
||||
- dev
|
||||
|
||||
jobs:
|
||||
- job: Build
|
||||
timeoutInMinutes: 180
|
||||
pool:
|
||||
vmImage: 'VS2017-Win2016'
|
||||
steps:
|
||||
- checkout: self
|
||||
- task: CacheBeta@0
|
||||
displayName: Cache LLVM source
|
||||
inputs:
|
||||
key: llvm-source-9-windows-v0
|
||||
path: llvm-project
|
||||
- task: Bash@3
|
||||
displayName: Download LLVM source
|
||||
inputs:
|
||||
targetType: inline
|
||||
script: make llvm-source
|
||||
- task: CacheBeta@0
|
||||
displayName: Cache LLVM build
|
||||
inputs:
|
||||
key: llvm-build-9-windows-v0
|
||||
path: llvm-build
|
||||
- task: Bash@3
|
||||
displayName: Build LLVM
|
||||
inputs:
|
||||
targetType: inline
|
||||
script: |
|
||||
if [ ! -f llvm-build/lib/liblldELF.a ]
|
||||
then
|
||||
choco install ninja
|
||||
# LLVM 9 cannot be built with MinGW 8.
|
||||
# For details: https://reviews.llvm.org/D70266
|
||||
choco uninstall mingw
|
||||
choco install mingw --version=7.3.0
|
||||
make llvm-build
|
||||
fi
|
||||
- task: Bash@3
|
||||
displayName: Install QEMU
|
||||
inputs:
|
||||
targetType: inline
|
||||
script: choco install qemu
|
||||
- task: Bash@3
|
||||
displayName: Test TinyGo
|
||||
inputs:
|
||||
targetType: inline
|
||||
script: |
|
||||
export PATH="/c/Go1.13/bin:$PATH:./llvm-build/bin:/c/Program Files/qemu"
|
||||
unset GOROOT
|
||||
make test
|
||||
- task: Bash@3
|
||||
displayName: Build TinyGo release tarball
|
||||
inputs:
|
||||
targetType: inline
|
||||
script: |
|
||||
export PATH="/c/Go1.13/bin:$PATH:./llvm-build/bin:/c/Program Files/qemu"
|
||||
unset GOROOT
|
||||
make release -j4
|
||||
- publish: $(System.DefaultWorkingDirectory)/build/release.tar.gz
|
||||
displayName: Publish tarball as artifact
|
||||
artifact: tinygo.windows-amd64.tar.gz
|
||||
- task: Bash@3
|
||||
displayName: Smoke tests
|
||||
inputs:
|
||||
targetType: inline
|
||||
script: |
|
||||
export PATH="/c/Go1.13/bin:$PATH:./llvm-build/bin:/c/Program Files/qemu"
|
||||
unset GOROOT
|
||||
make smoketest TINYGO=build/tinygo AVR=0 RISCV=0
|
||||
@@ -1,4 +1,4 @@
|
||||
package builder
|
||||
package main
|
||||
|
||||
import (
|
||||
"debug/elf"
|
||||
@@ -6,18 +6,18 @@ import (
|
||||
"strings"
|
||||
)
|
||||
|
||||
// programSize contains size statistics per package of a compiled program.
|
||||
type programSize struct {
|
||||
Packages map[string]*packageSize
|
||||
Sum *packageSize
|
||||
// Statistics about code size in a program.
|
||||
type ProgramSize struct {
|
||||
Packages map[string]*PackageSize
|
||||
Sum *PackageSize
|
||||
Code uint64
|
||||
Data uint64
|
||||
BSS uint64
|
||||
}
|
||||
|
||||
// sortedPackageNames returns the list of package names (ProgramSize.Packages)
|
||||
// sorted alphabetically.
|
||||
func (ps *programSize) sortedPackageNames() []string {
|
||||
// Return the list of package names (ProgramSize.Packages) sorted
|
||||
// alphabetically.
|
||||
func (ps *ProgramSize) SortedPackageNames() []string {
|
||||
names := make([]string, 0, len(ps.Packages))
|
||||
for name := range ps.Packages {
|
||||
names = append(names, name)
|
||||
@@ -26,9 +26,8 @@ func (ps *programSize) sortedPackageNames() []string {
|
||||
return names
|
||||
}
|
||||
|
||||
// packageSize contains the size of a package, calculated from the linked object
|
||||
// file.
|
||||
type packageSize struct {
|
||||
// The size of a package, calculated from the linked object file.
|
||||
type PackageSize struct {
|
||||
Code uint64
|
||||
ROData uint64
|
||||
Data uint64
|
||||
@@ -36,12 +35,12 @@ type packageSize struct {
|
||||
}
|
||||
|
||||
// Flash usage in regular microcontrollers.
|
||||
func (ps *packageSize) Flash() uint64 {
|
||||
func (ps *PackageSize) Flash() uint64 {
|
||||
return ps.Code + ps.ROData + ps.Data
|
||||
}
|
||||
|
||||
// Static RAM usage in regular microcontrollers.
|
||||
func (ps *packageSize) RAM() uint64 {
|
||||
func (ps *PackageSize) RAM() uint64 {
|
||||
return ps.Data + ps.BSS
|
||||
}
|
||||
|
||||
@@ -65,9 +64,8 @@ func (l symbolList) Swap(i, j int) {
|
||||
l[i], l[j] = l[j], l[i]
|
||||
}
|
||||
|
||||
// loadProgramSize calculate a program/data size breakdown of each package for a
|
||||
// given ELF file.
|
||||
func loadProgramSize(path string) (*programSize, error) {
|
||||
// Calculate program/data size breakdown of each package for a given ELF file.
|
||||
func Sizes(path string) (*ProgramSize, error) {
|
||||
file, err := elf.Open(path)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
@@ -117,7 +115,7 @@ func loadProgramSize(path string) (*programSize, error) {
|
||||
}
|
||||
sort.Sort(symbolList(symbols))
|
||||
|
||||
sizes := map[string]*packageSize{}
|
||||
sizes := map[string]*PackageSize{}
|
||||
var lastSymbolValue uint64
|
||||
for _, symbol := range symbols {
|
||||
symType := elf.ST_TYPE(symbol.Info)
|
||||
@@ -131,7 +129,7 @@ func loadProgramSize(path string) (*programSize, error) {
|
||||
}
|
||||
pkgSize := sizes[pkgName]
|
||||
if pkgSize == nil {
|
||||
pkgSize = &packageSize{}
|
||||
pkgSize = &PackageSize{}
|
||||
sizes[pkgName] = pkgSize
|
||||
}
|
||||
if lastSymbolValue != symbol.Value || lastSymbolValue == 0 {
|
||||
@@ -150,7 +148,7 @@ func loadProgramSize(path string) (*programSize, error) {
|
||||
lastSymbolValue = symbol.Value
|
||||
}
|
||||
|
||||
sum := &packageSize{}
|
||||
sum := &PackageSize{}
|
||||
for _, pkg := range sizes {
|
||||
sum.Code += pkg.Code
|
||||
sum.ROData += pkg.ROData
|
||||
@@ -158,5 +156,5 @@ func loadProgramSize(path string) (*programSize, error) {
|
||||
sum.BSS += pkg.BSS
|
||||
}
|
||||
|
||||
return &programSize{Packages: sizes, Code: sumCode, Data: sumData, BSS: sumBSS, Sum: sum}, nil
|
||||
return &ProgramSize{Packages: sizes, Code: sumCode, Data: sumData, BSS: sumBSS, Sum: sum}, nil
|
||||
}
|
||||
@@ -1,14 +1,19 @@
|
||||
package builder
|
||||
package main
|
||||
|
||||
import (
|
||||
"io"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"time"
|
||||
|
||||
"github.com/tinygo-org/tinygo/goenv"
|
||||
)
|
||||
|
||||
// Get the cache directory, usually ~/.cache/tinygo
|
||||
func cacheDir() string {
|
||||
home := getHomeDir()
|
||||
dir := filepath.Join(home, ".cache", "tinygo")
|
||||
return dir
|
||||
}
|
||||
|
||||
// Return the newest timestamp of all the file paths passed in. Used to check
|
||||
// for stale caches.
|
||||
func cacheTimestamp(paths []string) (time.Time, error) {
|
||||
@@ -34,7 +39,8 @@ func cacheTimestamp(paths []string) (time.Time, error) {
|
||||
// TODO: the configKey is currently ignored. It is supposed to be used as extra
|
||||
// data for the cache key, like the compiler version and arguments.
|
||||
func cacheLoad(name, configKey string, sourceFiles []string) (string, error) {
|
||||
cachepath := filepath.Join(goenv.Get("GOCACHE"), name)
|
||||
dir := cacheDir()
|
||||
cachepath := filepath.Join(dir, name)
|
||||
cacheStat, err := os.Stat(cachepath)
|
||||
if os.IsNotExist(err) {
|
||||
return "", nil // does not exist
|
||||
@@ -68,51 +74,35 @@ func cacheStore(tmppath, name, configKey string, sourceFiles []string) (string,
|
||||
|
||||
// TODO: check the config key
|
||||
|
||||
dir := goenv.Get("GOCACHE")
|
||||
dir := cacheDir()
|
||||
err := os.MkdirAll(dir, 0777)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
cachepath := filepath.Join(dir, name)
|
||||
err = moveFile(tmppath, cachepath)
|
||||
err = os.Rename(tmppath, cachepath)
|
||||
if err != nil {
|
||||
return "", err
|
||||
inf, err := os.Open(tmppath)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
defer inf.Close()
|
||||
outf, err := os.Create(cachepath + ".tmp")
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
_, err = io.Copy(outf, inf)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
err = os.Rename(cachepath+".tmp", cachepath)
|
||||
if err != nil {
|
||||
return "", err
|
||||
}
|
||||
|
||||
return cachepath, outf.Close()
|
||||
}
|
||||
return cachepath, nil
|
||||
}
|
||||
|
||||
// moveFile renames the file from src to dst. If renaming doesn't work (for
|
||||
// example, the rename crosses a filesystem boundary), the file is copied and
|
||||
// the old file is removed.
|
||||
func moveFile(src, dst string) error {
|
||||
err := os.Rename(src, dst)
|
||||
if err == nil {
|
||||
// Success!
|
||||
return nil
|
||||
}
|
||||
// Failed to move, probably a different filesystem.
|
||||
// Do a copy + remove.
|
||||
inf, err := os.Open(src)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer inf.Close()
|
||||
outpath := dst + ".tmp"
|
||||
outf, err := os.Create(outpath)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
_, err = io.Copy(outf, inf)
|
||||
if err != nil {
|
||||
os.Remove(outpath)
|
||||
return err
|
||||
}
|
||||
|
||||
err = outf.Close()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
return os.Rename(dst+".tmp", dst)
|
||||
}
|
||||
-182
@@ -1,182 +0,0 @@
|
||||
package builder
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"debug/elf"
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"io"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"time"
|
||||
|
||||
"github.com/blakesmith/ar"
|
||||
)
|
||||
|
||||
// makeArchive creates an arcive for static linking from a list of object files
|
||||
// given as a parameter. It is equivalent to the following command:
|
||||
//
|
||||
// ar -rcs <archivePath> <objs...>
|
||||
func makeArchive(archivePath string, objs []string) error {
|
||||
// Open the archive file.
|
||||
arfile, err := os.Create(archivePath)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer arfile.Close()
|
||||
arwriter := ar.NewWriter(arfile)
|
||||
err = arwriter.WriteGlobalHeader()
|
||||
if err != nil {
|
||||
return &os.PathError{"write ar header", archivePath, err}
|
||||
}
|
||||
|
||||
// Open all object files and read the symbols for the symbol table.
|
||||
symbolTable := []struct {
|
||||
name string // symbol name
|
||||
fileIndex int // index into objfiles
|
||||
}{}
|
||||
objfiles := make([]struct {
|
||||
file *os.File
|
||||
archiveOffset int32
|
||||
}, len(objs))
|
||||
for i, objpath := range objs {
|
||||
objfile, err := os.Open(objpath)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
objfiles[i].file = objfile
|
||||
|
||||
// Read the symbols and add them to the symbol table.
|
||||
dbg, err := elf.NewFile(objfile)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
symbols, err := dbg.Symbols()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for _, symbol := range symbols {
|
||||
bind := elf.ST_BIND(symbol.Info)
|
||||
if bind != elf.STB_GLOBAL && bind != elf.STB_WEAK {
|
||||
// Don't include local symbols (STB_LOCAL).
|
||||
continue
|
||||
}
|
||||
if elf.ST_TYPE(symbol.Info) != elf.STT_FUNC {
|
||||
// Not a function.
|
||||
// TODO: perhaps globals variables should also be included?
|
||||
continue
|
||||
}
|
||||
// Include in archive.
|
||||
symbolTable = append(symbolTable, struct {
|
||||
name string
|
||||
fileIndex int
|
||||
}{symbol.Name, i})
|
||||
}
|
||||
}
|
||||
|
||||
// Create the symbol table buffer.
|
||||
// For some (sparse) details on the file format:
|
||||
// https://en.wikipedia.org/wiki/Ar_(Unix)#System_V_(or_GNU)_variant
|
||||
buf := &bytes.Buffer{}
|
||||
binary.Write(buf, binary.BigEndian, int32(len(symbolTable)))
|
||||
for range symbolTable {
|
||||
// This is a placeholder index, it will be updated after all files have
|
||||
// been written to the archive (see the end of this function).
|
||||
err = binary.Write(buf, binary.BigEndian, int32(0))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
for _, sym := range symbolTable {
|
||||
_, err := buf.Write([]byte(sym.name + "\x00"))
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
for buf.Len()%2 != 0 {
|
||||
// The symbol table must be aligned.
|
||||
// This appears to be required by lld.
|
||||
buf.WriteByte(0)
|
||||
}
|
||||
|
||||
// Write the symbol table.
|
||||
err = arwriter.WriteHeader(&ar.Header{
|
||||
Name: "/",
|
||||
ModTime: time.Unix(0, 0),
|
||||
Uid: 0,
|
||||
Gid: 0,
|
||||
Mode: 0,
|
||||
Size: int64(buf.Len()),
|
||||
})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Keep track of the start of the symbol table.
|
||||
symbolTableStart, err := arfile.Seek(0, os.SEEK_CUR)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Write symbol table contents.
|
||||
_, err = arfile.Write(buf.Bytes())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Add all object files to the archive.
|
||||
for i, objfile := range objfiles {
|
||||
// Store the start index, for when we'll update the symbol table with
|
||||
// the correct file start indices.
|
||||
offset, err := arfile.Seek(0, os.SEEK_CUR)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if int64(int32(offset)) != offset {
|
||||
return errors.New("large archives (4GB+) not supported: " + archivePath)
|
||||
}
|
||||
objfiles[i].archiveOffset = int32(offset)
|
||||
|
||||
// Write the file header.
|
||||
st, err := objfile.file.Stat()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
err = arwriter.WriteHeader(&ar.Header{
|
||||
Name: filepath.Base(objfile.file.Name()),
|
||||
ModTime: time.Unix(0, 0),
|
||||
Uid: 0,
|
||||
Gid: 0,
|
||||
Mode: 0644,
|
||||
Size: st.Size(),
|
||||
})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Copy the file contents into the archive.
|
||||
n, err := io.Copy(arwriter, objfile.file)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if n != st.Size() {
|
||||
return errors.New("file modified during ar creation: " + archivePath)
|
||||
}
|
||||
|
||||
// File is not needed anymore.
|
||||
objfile.file.Close()
|
||||
}
|
||||
|
||||
// Create symbol indices.
|
||||
indicesBuf := &bytes.Buffer{}
|
||||
for _, sym := range symbolTable {
|
||||
err = binary.Write(indicesBuf, binary.BigEndian, objfiles[sym.fileIndex].archiveOffset)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Overwrite placeholder indices.
|
||||
_, err = arfile.WriteAt(indicesBuf.Bytes(), symbolTableStart+4)
|
||||
return err
|
||||
}
|
||||
@@ -1,227 +0,0 @@
|
||||
// Package builder is the compiler driver of TinyGo. It takes in a package name
|
||||
// and an output path, and outputs an executable. It manages the entire
|
||||
// compilation pipeline in between.
|
||||
package builder
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"github.com/tinygo-org/tinygo/compileopts"
|
||||
"github.com/tinygo-org/tinygo/compiler"
|
||||
"github.com/tinygo-org/tinygo/goenv"
|
||||
"github.com/tinygo-org/tinygo/interp"
|
||||
)
|
||||
|
||||
// Build performs a single package to executable Go build. It takes in a package
|
||||
// name, an output path, and set of compile options and from that it manages the
|
||||
// whole compilation process.
|
||||
//
|
||||
// The error value may be of type *MultiError. Callers will likely want to check
|
||||
// for this case and print such errors individually.
|
||||
func Build(pkgName, outpath string, config *compileopts.Config, action func(string) error) error {
|
||||
c, err := compiler.NewCompiler(pkgName, config)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Compile Go code to IR.
|
||||
errs := c.Compile(pkgName)
|
||||
if len(errs) != 0 {
|
||||
if len(errs) == 1 {
|
||||
return errs[0]
|
||||
}
|
||||
return &MultiError{errs}
|
||||
}
|
||||
if config.Options.PrintIR {
|
||||
fmt.Println("; Generated LLVM IR:")
|
||||
fmt.Println(c.IR())
|
||||
}
|
||||
if err := c.Verify(); err != nil {
|
||||
return errors.New("verification error after IR construction")
|
||||
}
|
||||
|
||||
err = interp.Run(c.Module(), config.DumpSSA())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err := c.Verify(); err != nil {
|
||||
return errors.New("verification error after interpreting runtime.initAll")
|
||||
}
|
||||
|
||||
if config.GOOS() != "darwin" {
|
||||
c.ApplyFunctionSections() // -ffunction-sections
|
||||
}
|
||||
|
||||
// Browsers cannot handle external functions that have type i64 because it
|
||||
// cannot be represented exactly in JavaScript (JS only has doubles). To
|
||||
// keep functions interoperable, pass int64 types as pointers to
|
||||
// stack-allocated values.
|
||||
// Use -wasm-abi=generic to disable this behaviour.
|
||||
if config.Options.WasmAbi == "js" && strings.HasPrefix(config.Triple(), "wasm") {
|
||||
err := c.ExternalInt64AsPtr()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Optimization levels here are roughly the same as Clang, but probably not
|
||||
// exactly.
|
||||
switch config.Options.Opt {
|
||||
case "none:", "0":
|
||||
err = c.Optimize(0, 0, 0) // -O0
|
||||
case "1":
|
||||
err = c.Optimize(1, 0, 0) // -O1
|
||||
case "2":
|
||||
err = c.Optimize(2, 0, 225) // -O2
|
||||
case "s":
|
||||
err = c.Optimize(2, 1, 225) // -Os
|
||||
case "z":
|
||||
err = c.Optimize(2, 2, 5) // -Oz, default
|
||||
default:
|
||||
err = errors.New("unknown optimization level: -opt=" + config.Options.Opt)
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if err := c.Verify(); err != nil {
|
||||
return errors.New("verification failure after LLVM optimization passes")
|
||||
}
|
||||
|
||||
// On the AVR, pointers can point either to flash or to RAM, but we don't
|
||||
// know. As a temporary fix, load all global variables in RAM.
|
||||
// In the future, there should be a compiler pass that determines which
|
||||
// pointers are flash and which are in RAM so that pointers can have a
|
||||
// correct address space parameter (address space 1 is for flash).
|
||||
if strings.HasPrefix(config.Triple(), "avr") {
|
||||
c.NonConstGlobals()
|
||||
if err := c.Verify(); err != nil {
|
||||
return errors.New("verification error after making all globals non-constant on AVR")
|
||||
}
|
||||
}
|
||||
|
||||
// Generate output.
|
||||
outext := filepath.Ext(outpath)
|
||||
switch outext {
|
||||
case ".o":
|
||||
return c.EmitObject(outpath)
|
||||
case ".bc":
|
||||
return c.EmitBitcode(outpath)
|
||||
case ".ll":
|
||||
return c.EmitText(outpath)
|
||||
default:
|
||||
// Act as a compiler driver.
|
||||
|
||||
// Create a temporary directory for intermediary files.
|
||||
dir, err := ioutil.TempDir("", "tinygo")
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer os.RemoveAll(dir)
|
||||
|
||||
// Write the object file.
|
||||
objfile := filepath.Join(dir, "main.o")
|
||||
err = c.EmitObject(objfile)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Load builtins library from the cache, possibly compiling it on the
|
||||
// fly.
|
||||
var librt string
|
||||
if config.Target.RTLib == "compiler-rt" {
|
||||
librt, err = loadBuiltins(config.Triple())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Prepare link command.
|
||||
executable := filepath.Join(dir, "main")
|
||||
tmppath := executable // final file
|
||||
ldflags := append(config.LDFlags(), "-o", executable, objfile)
|
||||
if config.Target.RTLib == "compiler-rt" {
|
||||
ldflags = append(ldflags, librt)
|
||||
}
|
||||
|
||||
// Compile extra files.
|
||||
root := goenv.Get("TINYGOROOT")
|
||||
for i, path := range config.ExtraFiles() {
|
||||
abspath := filepath.Join(root, path)
|
||||
outpath := filepath.Join(dir, "extra-"+strconv.Itoa(i)+"-"+filepath.Base(path)+".o")
|
||||
cmdNames := []string{config.Target.Compiler}
|
||||
if names, ok := commands[config.Target.Compiler]; ok {
|
||||
cmdNames = names
|
||||
}
|
||||
err := execCommand(cmdNames, append(config.CFlags(), "-c", "-o", outpath, abspath)...)
|
||||
if err != nil {
|
||||
return &commandError{"failed to build", path, err}
|
||||
}
|
||||
ldflags = append(ldflags, outpath)
|
||||
}
|
||||
|
||||
// Compile C files in packages.
|
||||
for i, pkg := range c.Packages() {
|
||||
for _, file := range pkg.CFiles {
|
||||
path := filepath.Join(pkg.Package.Dir, file)
|
||||
outpath := filepath.Join(dir, "pkg"+strconv.Itoa(i)+"-"+file+".o")
|
||||
cmdNames := []string{config.Target.Compiler}
|
||||
if names, ok := commands[config.Target.Compiler]; ok {
|
||||
cmdNames = names
|
||||
}
|
||||
err := execCommand(cmdNames, append(config.CFlags(), "-c", "-o", outpath, path)...)
|
||||
if err != nil {
|
||||
return &commandError{"failed to build", path, err}
|
||||
}
|
||||
ldflags = append(ldflags, outpath)
|
||||
}
|
||||
}
|
||||
|
||||
// Link the object files together.
|
||||
err = link(config.Target.Linker, ldflags...)
|
||||
if err != nil {
|
||||
return &commandError{"failed to link", executable, err}
|
||||
}
|
||||
|
||||
if config.Options.PrintSizes == "short" || config.Options.PrintSizes == "full" {
|
||||
sizes, err := loadProgramSize(executable)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if config.Options.PrintSizes == "short" {
|
||||
fmt.Printf(" code data bss | flash ram\n")
|
||||
fmt.Printf("%7d %7d %7d | %7d %7d\n", sizes.Code, sizes.Data, sizes.BSS, sizes.Code+sizes.Data, sizes.Data+sizes.BSS)
|
||||
} else {
|
||||
fmt.Printf(" code rodata data bss | flash ram | package\n")
|
||||
for _, name := range sizes.sortedPackageNames() {
|
||||
pkgSize := sizes.Packages[name]
|
||||
fmt.Printf("%7d %7d %7d %7d | %7d %7d | %s\n", pkgSize.Code, pkgSize.ROData, pkgSize.Data, pkgSize.BSS, pkgSize.Flash(), pkgSize.RAM(), name)
|
||||
}
|
||||
fmt.Printf("%7d %7d %7d %7d | %7d %7d | (sum)\n", sizes.Sum.Code, sizes.Sum.ROData, sizes.Sum.Data, sizes.Sum.BSS, sizes.Sum.Flash(), sizes.Sum.RAM())
|
||||
fmt.Printf("%7d - %7d %7d | %7d %7d | (all)\n", sizes.Code, sizes.Data, sizes.BSS, sizes.Code+sizes.Data, sizes.Data+sizes.BSS)
|
||||
}
|
||||
}
|
||||
|
||||
// Get an Intel .hex file or .bin file from the .elf file.
|
||||
if outext == ".hex" || outext == ".bin" || outext == ".gba" {
|
||||
tmppath = filepath.Join(dir, "main"+outext)
|
||||
err := objcopy(executable, tmppath)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
} else if outext == ".uf2" {
|
||||
// Get UF2 from the .elf file.
|
||||
tmppath = filepath.Join(dir, "main"+outext)
|
||||
err := convertELFFileToUF2File(executable, tmppath)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return action(tmppath)
|
||||
}
|
||||
}
|
||||
@@ -1,55 +0,0 @@
|
||||
package builder
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"os"
|
||||
"os/exec"
|
||||
"runtime"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Commands lists command alternatives for various operating systems. These
|
||||
// commands may have a slightly different name across operating systems and
|
||||
// distributions or may not even exist in $PATH, in which case absolute paths
|
||||
// may be used.
|
||||
var commands = map[string][]string{
|
||||
"clang": {"clang-9"},
|
||||
"ld.lld": {"ld.lld-9", "ld.lld"},
|
||||
"wasm-ld": {"wasm-ld-9", "wasm-ld"},
|
||||
}
|
||||
|
||||
func init() {
|
||||
// Add the path to a Homebrew-installed LLVM 9 for ease of use (no need to
|
||||
// manually set $PATH).
|
||||
if runtime.GOOS == "darwin" {
|
||||
commands["clang"] = append(commands["clang"], "/usr/local/opt/llvm@9/bin/clang-9")
|
||||
commands["ld.lld"] = append(commands["ld.lld"], "/usr/local/opt/llvm@9/bin/ld.lld")
|
||||
commands["wasm-ld"] = append(commands["wasm-ld"], "/usr/local/opt/llvm@9/bin/wasm-ld")
|
||||
}
|
||||
// Add the path for when LLVM was installed with the installer from
|
||||
// llvm.org, which by default doesn't add LLVM to the $PATH environment
|
||||
// variable.
|
||||
if runtime.GOOS == "windows" {
|
||||
commands["clang"] = append(commands["clang"], "clang", "C:\\Program Files\\LLVM\\bin\\clang.exe")
|
||||
commands["ld.lld"] = append(commands["ld.lld"], "lld", "C:\\Program Files\\LLVM\\bin\\lld.exe")
|
||||
commands["wasm-ld"] = append(commands["wasm-ld"], "C:\\Program Files\\LLVM\\bin\\wasm-ld.exe")
|
||||
}
|
||||
}
|
||||
|
||||
func execCommand(cmdNames []string, args ...string) error {
|
||||
for _, cmdName := range cmdNames {
|
||||
cmd := exec.Command(cmdName, args...)
|
||||
cmd.Stdout = os.Stdout
|
||||
cmd.Stderr = os.Stderr
|
||||
err := cmd.Run()
|
||||
if err != nil {
|
||||
if err, ok := err.(*exec.Error); ok && (err.Err == exec.ErrNotFound || err.Err.Error() == "file does not exist") {
|
||||
// this command was not found, try the next
|
||||
continue
|
||||
}
|
||||
return err
|
||||
}
|
||||
return nil
|
||||
}
|
||||
return errors.New("none of these commands were found in your $PATH: " + strings.Join(cmdNames, " "))
|
||||
}
|
||||
@@ -1,39 +0,0 @@
|
||||
package builder
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
|
||||
"github.com/tinygo-org/tinygo/compileopts"
|
||||
"github.com/tinygo-org/tinygo/goenv"
|
||||
)
|
||||
|
||||
// NewConfig builds a new Config object from a set of compiler options. It also
|
||||
// loads some information from the environment while doing that. For example, it
|
||||
// uses the currently active GOPATH (from the goenv package) to determine the Go
|
||||
// version to use.
|
||||
func NewConfig(options *compileopts.Options) (*compileopts.Config, error) {
|
||||
spec, err := compileopts.LoadTarget(options.Target)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
goroot := goenv.Get("GOROOT")
|
||||
if goroot == "" {
|
||||
return nil, errors.New("cannot locate $GOROOT, please set it manually")
|
||||
}
|
||||
major, minor, err := getGorootVersion(goroot)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("could not read version from GOROOT (%v): %v", goroot, err)
|
||||
}
|
||||
if major != 1 || (minor != 11 && minor != 12 && minor != 13) {
|
||||
return nil, fmt.Errorf("requires go version 1.11, 1.12, or 1.13, got go%d.%d", major, minor)
|
||||
}
|
||||
clangHeaderPath := getClangHeaderPath(goenv.Get("TINYGOROOT"))
|
||||
return &compileopts.Config{
|
||||
Options: options,
|
||||
Target: spec,
|
||||
GoMinorVersion: minor,
|
||||
ClangHeaders: clangHeaderPath,
|
||||
TestConfig: options.TestConfig,
|
||||
}, nil
|
||||
}
|
||||
-127
@@ -1,127 +0,0 @@
|
||||
package builder
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"os/exec"
|
||||
"path/filepath"
|
||||
"regexp"
|
||||
"sort"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// getGorootVersion returns the major and minor version for a given GOROOT path.
|
||||
// If the goroot cannot be determined, (0, 0) is returned.
|
||||
func getGorootVersion(goroot string) (major, minor int, err error) {
|
||||
s, err := GorootVersionString(goroot)
|
||||
if err != nil {
|
||||
return 0, 0, err
|
||||
}
|
||||
|
||||
if s == "" || s[:2] != "go" {
|
||||
return 0, 0, errors.New("could not parse Go version: version does not start with 'go' prefix")
|
||||
}
|
||||
|
||||
parts := strings.Split(s[2:], ".")
|
||||
if len(parts) < 2 {
|
||||
return 0, 0, errors.New("could not parse Go version: version has less than two parts")
|
||||
}
|
||||
|
||||
// Ignore the errors, we don't really handle errors here anyway.
|
||||
var trailing string
|
||||
n, err := fmt.Sscanf(s, "go%d.%d%s", &major, &minor, &trailing)
|
||||
if n == 2 && err == io.EOF {
|
||||
// Means there were no trailing characters (i.e., not an alpha/beta)
|
||||
err = nil
|
||||
}
|
||||
if err != nil {
|
||||
return 0, 0, fmt.Errorf("failed to parse version: %s", err)
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// GorootVersionString returns the version string as reported by the Go
|
||||
// toolchain for the given GOROOT path. It is usually of the form `go1.x.y` but
|
||||
// can have some variations (for beta releases, for example).
|
||||
func GorootVersionString(goroot string) (string, error) {
|
||||
if data, err := ioutil.ReadFile(filepath.Join(
|
||||
goroot, "src", "runtime", "internal", "sys", "zversion.go")); err == nil {
|
||||
|
||||
r := regexp.MustCompile("const TheVersion = `(.*)`")
|
||||
matches := r.FindSubmatch(data)
|
||||
if len(matches) != 2 {
|
||||
return "", errors.New("Invalid go version output:\n" + string(data))
|
||||
}
|
||||
|
||||
return string(matches[1]), nil
|
||||
|
||||
} else if data, err := ioutil.ReadFile(filepath.Join(goroot, "VERSION")); err == nil {
|
||||
return string(data), nil
|
||||
|
||||
} else {
|
||||
return "", err
|
||||
}
|
||||
}
|
||||
|
||||
// getClangHeaderPath returns the path to the built-in Clang headers. It tries
|
||||
// multiple locations, which should make it find the directory when installed in
|
||||
// various ways.
|
||||
func getClangHeaderPath(TINYGOROOT string) string {
|
||||
// Check whether we're running from the source directory.
|
||||
path := filepath.Join(TINYGOROOT, "llvm", "tools", "clang", "lib", "Headers")
|
||||
if _, err := os.Stat(path); !os.IsNotExist(err) {
|
||||
return path
|
||||
}
|
||||
|
||||
// Check whether we're running from the installation directory.
|
||||
path = filepath.Join(TINYGOROOT, "lib", "clang", "include")
|
||||
if _, err := os.Stat(path); !os.IsNotExist(err) {
|
||||
return path
|
||||
}
|
||||
|
||||
// It looks like we are built with a system-installed LLVM. Do a last
|
||||
// attempt: try to use Clang headers relative to the clang binary.
|
||||
for _, cmdName := range commands["clang"] {
|
||||
binpath, err := exec.LookPath(cmdName)
|
||||
if err == nil {
|
||||
// This should be the command that will also be used by
|
||||
// execCommand. To avoid inconsistencies, make sure we use the
|
||||
// headers relative to this command.
|
||||
binpath, err = filepath.EvalSymlinks(binpath)
|
||||
if err != nil {
|
||||
// Unexpected.
|
||||
return ""
|
||||
}
|
||||
// Example executable:
|
||||
// /usr/lib/llvm-9/bin/clang
|
||||
// Example include path:
|
||||
// /usr/lib/llvm-9/lib/clang/9.0.1/include/
|
||||
llvmRoot := filepath.Dir(filepath.Dir(binpath))
|
||||
clangVersionRoot := filepath.Join(llvmRoot, "lib", "clang")
|
||||
dirs, err := ioutil.ReadDir(clangVersionRoot)
|
||||
if err != nil {
|
||||
// Unexpected.
|
||||
continue
|
||||
}
|
||||
dirnames := make([]string, len(dirs))
|
||||
for i, d := range dirs {
|
||||
dirnames[i] = d.Name()
|
||||
}
|
||||
sort.Strings(dirnames)
|
||||
// Check for the highest version first.
|
||||
for i := len(dirnames) - 1; i >= 0; i-- {
|
||||
path := filepath.Join(clangVersionRoot, dirnames[i], "include")
|
||||
_, err := os.Stat(filepath.Join(path, "stdint.h"))
|
||||
if err == nil {
|
||||
return path
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Could not find it.
|
||||
return ""
|
||||
}
|
||||
@@ -1,25 +0,0 @@
|
||||
package builder
|
||||
|
||||
// MultiError is a list of multiple errors (actually: diagnostics) returned
|
||||
// during LLVM IR generation.
|
||||
type MultiError struct {
|
||||
Errs []error
|
||||
}
|
||||
|
||||
func (e *MultiError) Error() string {
|
||||
// Return the first error, to conform to the error interface. Clients should
|
||||
// really do a type-assertion on *MultiError.
|
||||
return e.Errs[0].Error()
|
||||
}
|
||||
|
||||
// commandError is an error type to wrap os/exec.Command errors. This provides
|
||||
// some more information regarding what went wrong while running a command.
|
||||
type commandError struct {
|
||||
Msg string
|
||||
File string
|
||||
Err error
|
||||
}
|
||||
|
||||
func (e *commandError) Error() string {
|
||||
return e.Msg + " " + e.File + ": " + e.Err.Error()
|
||||
}
|
||||
@@ -1,71 +0,0 @@
|
||||
// +build byollvm
|
||||
|
||||
package builder
|
||||
|
||||
// This file provides a Link() function that uses the bundled lld if possible.
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"os"
|
||||
"os/exec"
|
||||
"unsafe"
|
||||
|
||||
"github.com/tinygo-org/tinygo/goenv"
|
||||
)
|
||||
|
||||
/*
|
||||
#include <stdbool.h>
|
||||
#include <stdlib.h>
|
||||
bool tinygo_link_elf(int argc, char **argv);
|
||||
bool tinygo_link_wasm(int argc, char **argv);
|
||||
*/
|
||||
import "C"
|
||||
|
||||
// link invokes a linker with the given name and flags.
|
||||
//
|
||||
// This version uses the built-in linker when trying to use lld.
|
||||
func link(linker string, flags ...string) error {
|
||||
switch linker {
|
||||
case "ld.lld":
|
||||
flags = append([]string{"tinygo:" + linker}, flags...)
|
||||
var cflag *C.char
|
||||
buf := C.calloc(C.size_t(len(flags)), C.size_t(unsafe.Sizeof(cflag)))
|
||||
cflags := (*[1 << 10]*C.char)(unsafe.Pointer(buf))[:len(flags):len(flags)]
|
||||
for i, flag := range flags {
|
||||
cflag := C.CString(flag)
|
||||
cflags[i] = cflag
|
||||
defer C.free(unsafe.Pointer(cflag))
|
||||
}
|
||||
ok := C.tinygo_link_elf(C.int(len(flags)), (**C.char)(buf))
|
||||
if !ok {
|
||||
return errors.New("failed to link using built-in ld.lld")
|
||||
}
|
||||
return nil
|
||||
case "wasm-ld":
|
||||
flags = append([]string{"tinygo:" + linker}, flags...)
|
||||
var cflag *C.char
|
||||
buf := C.calloc(C.size_t(len(flags)), C.size_t(unsafe.Sizeof(cflag)))
|
||||
defer C.free(buf)
|
||||
cflags := (*[1 << 10]*C.char)(unsafe.Pointer(buf))[:len(flags):len(flags)]
|
||||
for i, flag := range flags {
|
||||
cflag := C.CString(flag)
|
||||
cflags[i] = cflag
|
||||
defer C.free(unsafe.Pointer(cflag))
|
||||
}
|
||||
ok := C.tinygo_link_wasm(C.int(len(flags)), (**C.char)(buf))
|
||||
if !ok {
|
||||
return errors.New("failed to link using built-in wasm-ld")
|
||||
}
|
||||
return nil
|
||||
default:
|
||||
// Fall back to external command.
|
||||
if cmdNames, ok := commands[linker]; ok {
|
||||
return execCommand(cmdNames, flags...)
|
||||
}
|
||||
cmd := exec.Command(linker, flags...)
|
||||
cmd.Stdout = os.Stdout
|
||||
cmd.Stderr = os.Stderr
|
||||
cmd.Dir = goenv.Get("TINYGOROOT")
|
||||
return cmd.Run()
|
||||
}
|
||||
}
|
||||
@@ -1,27 +0,0 @@
|
||||
// +build !byollvm
|
||||
|
||||
package builder
|
||||
|
||||
// This file provides a Link() function that always runs an external command. It
|
||||
// is provided for when tinygo is built without linking to liblld.
|
||||
|
||||
import (
|
||||
"os"
|
||||
"os/exec"
|
||||
|
||||
"github.com/tinygo-org/tinygo/goenv"
|
||||
)
|
||||
|
||||
// link invokes a linker with the given name and arguments.
|
||||
//
|
||||
// This version always runs the linker as an external command.
|
||||
func link(linker string, flags ...string) error {
|
||||
if cmdNames, ok := commands[linker]; ok {
|
||||
return execCommand(cmdNames, flags...)
|
||||
}
|
||||
cmd := exec.Command(linker, flags...)
|
||||
cmd.Stdout = os.Stdout
|
||||
cmd.Stderr = os.Stderr
|
||||
cmd.Dir = goenv.Get("TINYGOROOT")
|
||||
return cmd.Run()
|
||||
}
|
||||
@@ -1,19 +0,0 @@
|
||||
// +build byollvm
|
||||
|
||||
// This file provides C wrappers for liblld.
|
||||
|
||||
#include <lld/Common/Driver.h>
|
||||
|
||||
extern "C" {
|
||||
|
||||
bool tinygo_link_elf(int argc, char **argv) {
|
||||
std::vector<const char*> args(argv, argv + argc);
|
||||
return lld::elf::link(args, false);
|
||||
}
|
||||
|
||||
bool tinygo_link_wasm(int argc, char **argv) {
|
||||
std::vector<const char*> args(argv, argv + argc);
|
||||
return lld::wasm::link(args, false);
|
||||
}
|
||||
|
||||
} // external "C"
|
||||
@@ -1,131 +0,0 @@
|
||||
package builder
|
||||
|
||||
import (
|
||||
"debug/elf"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"path/filepath"
|
||||
"sort"
|
||||
|
||||
"github.com/marcinbor85/gohex"
|
||||
)
|
||||
|
||||
// objcopyError is an error returned by functions that act like objcopy.
|
||||
type objcopyError struct {
|
||||
Op string
|
||||
Err error
|
||||
}
|
||||
|
||||
func (e objcopyError) Error() string {
|
||||
if e.Err == nil {
|
||||
return e.Op
|
||||
}
|
||||
return e.Op + ": " + e.Err.Error()
|
||||
}
|
||||
|
||||
type progSlice []*elf.Prog
|
||||
|
||||
func (s progSlice) Len() int { return len(s) }
|
||||
func (s progSlice) Less(i, j int) bool { return s[i].Paddr < s[j].Paddr }
|
||||
func (s progSlice) Swap(i, j int) { s[i], s[j] = s[j], s[i] }
|
||||
|
||||
// extractROM extracts a firmware image and the first load address from the
|
||||
// given ELF file. It tries to emulate the behavior of objcopy.
|
||||
func extractROM(path string) (uint64, []byte, error) {
|
||||
f, err := elf.Open(path)
|
||||
if err != nil {
|
||||
return 0, nil, objcopyError{"failed to open ELF file to extract text segment", err}
|
||||
}
|
||||
defer f.Close()
|
||||
|
||||
// The GNU objcopy command does the following for firmware extraction (from
|
||||
// the man page):
|
||||
// > When objcopy generates a raw binary file, it will essentially produce a
|
||||
// > memory dump of the contents of the input object file. All symbols and
|
||||
// > relocation information will be discarded. The memory dump will start at
|
||||
// > the load address of the lowest section copied into the output file.
|
||||
|
||||
// Find the lowest section address.
|
||||
startAddr := ^uint64(0)
|
||||
for _, section := range f.Sections {
|
||||
if section.Type != elf.SHT_PROGBITS || section.Flags&elf.SHF_ALLOC == 0 {
|
||||
continue
|
||||
}
|
||||
if section.Addr < startAddr {
|
||||
startAddr = section.Addr
|
||||
}
|
||||
}
|
||||
|
||||
progs := make(progSlice, 0, 2)
|
||||
for _, prog := range f.Progs {
|
||||
if prog.Type != elf.PT_LOAD || prog.Filesz == 0 {
|
||||
continue
|
||||
}
|
||||
progs = append(progs, prog)
|
||||
}
|
||||
if len(progs) == 0 {
|
||||
return 0, nil, objcopyError{"file does not contain ROM segments: " + path, nil}
|
||||
}
|
||||
sort.Sort(progs)
|
||||
|
||||
var rom []byte
|
||||
for _, prog := range progs {
|
||||
if prog.Paddr != progs[0].Paddr+uint64(len(rom)) {
|
||||
return 0, nil, objcopyError{"ROM segments are non-contiguous: " + path, nil}
|
||||
}
|
||||
data, err := ioutil.ReadAll(prog.Open())
|
||||
if err != nil {
|
||||
return 0, nil, objcopyError{"failed to extract segment from ELF file: " + path, err}
|
||||
}
|
||||
rom = append(rom, data...)
|
||||
}
|
||||
if progs[0].Paddr < startAddr {
|
||||
// The lowest memory address is before the first section. This means
|
||||
// that there is some extra data loaded at the start of the image that
|
||||
// should be discarded.
|
||||
// Example: ELF files where .text doesn't start at address 0 because
|
||||
// there is a bootloader at the start.
|
||||
return startAddr, rom[startAddr-progs[0].Paddr:], nil
|
||||
} else {
|
||||
return progs[0].Paddr, rom, nil
|
||||
}
|
||||
}
|
||||
|
||||
// objcopy converts an ELF file to a different (simpler) output file format:
|
||||
// .bin or .hex. It extracts only the .text section.
|
||||
func objcopy(infile, outfile string) error {
|
||||
f, err := os.OpenFile(outfile, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
defer f.Close()
|
||||
|
||||
// Read the .text segment.
|
||||
addr, data, err := extractROM(infile)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Write to the file, in the correct format.
|
||||
switch filepath.Ext(outfile) {
|
||||
case ".gba":
|
||||
// The address is not stored in a .gba file.
|
||||
_, err := f.Write(data)
|
||||
return err
|
||||
case ".bin":
|
||||
// The address is not stored in a .bin file (therefore you
|
||||
// should use .hex files in most cases).
|
||||
_, err := f.Write(data)
|
||||
return err
|
||||
case ".hex":
|
||||
mem := gohex.NewMemory()
|
||||
err := mem.AddBinary(uint32(addr), data)
|
||||
if err != nil {
|
||||
return objcopyError{"failed to create .hex file", err}
|
||||
}
|
||||
mem.DumpIntelHex(f, 16) // TODO: handle error
|
||||
return nil
|
||||
default:
|
||||
panic("unreachable")
|
||||
}
|
||||
}
|
||||
-130
@@ -1,130 +0,0 @@
|
||||
package builder
|
||||
|
||||
// This file converts firmware files from BIN to UF2 format before flashing.
|
||||
//
|
||||
// For more information about the UF2 firmware file format, please see:
|
||||
// https://github.com/Microsoft/uf2
|
||||
//
|
||||
//
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/binary"
|
||||
"io/ioutil"
|
||||
)
|
||||
|
||||
// convertELFFileToUF2File converts an ELF file to a UF2 file.
|
||||
func convertELFFileToUF2File(infile, outfile string) error {
|
||||
// Read the .text segment.
|
||||
targetAddress, data, err := extractROM(infile)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
output, _ := convertBinToUF2(data, uint32(targetAddress))
|
||||
return ioutil.WriteFile(outfile, output, 0644)
|
||||
}
|
||||
|
||||
// convertBinToUF2 converts the binary bytes in input to UF2 formatted data.
|
||||
func convertBinToUF2(input []byte, targetAddr uint32) ([]byte, int) {
|
||||
blocks := split(input, 256)
|
||||
output := make([]byte, 0)
|
||||
|
||||
bl := newUF2Block(targetAddr)
|
||||
bl.SetNumBlocks(len(blocks))
|
||||
|
||||
for i := 0; i < len(blocks); i++ {
|
||||
bl.SetBlockNo(i)
|
||||
bl.SetData(blocks[i])
|
||||
|
||||
output = append(output, bl.Bytes()...)
|
||||
bl.IncrementAddress(bl.payloadSize)
|
||||
}
|
||||
|
||||
return output, len(blocks)
|
||||
}
|
||||
|
||||
const (
|
||||
uf2MagicStart0 = 0x0A324655 // "UF2\n"
|
||||
uf2MagicStart1 = 0x9E5D5157 // Randomly selected
|
||||
uf2MagicEnd = 0x0AB16F30 // Ditto
|
||||
)
|
||||
|
||||
// uf2Block is the structure used for each UF2 code block sent to device.
|
||||
type uf2Block struct {
|
||||
magicStart0 uint32
|
||||
magicStart1 uint32
|
||||
flags uint32
|
||||
targetAddr uint32
|
||||
payloadSize uint32
|
||||
blockNo uint32
|
||||
numBlocks uint32
|
||||
familyID uint32
|
||||
data []uint8
|
||||
magicEnd uint32
|
||||
}
|
||||
|
||||
// newUF2Block returns a new uf2Block struct that has been correctly populated
|
||||
func newUF2Block(targetAddr uint32) *uf2Block {
|
||||
return &uf2Block{magicStart0: uf2MagicStart0,
|
||||
magicStart1: uf2MagicStart1,
|
||||
magicEnd: uf2MagicEnd,
|
||||
targetAddr: targetAddr,
|
||||
flags: 0x0,
|
||||
familyID: 0x0,
|
||||
payloadSize: 256,
|
||||
data: make([]byte, 476),
|
||||
}
|
||||
}
|
||||
|
||||
// Bytes converts the uf2Block to a slice of bytes that can be written to file.
|
||||
func (b *uf2Block) Bytes() []byte {
|
||||
buf := bytes.NewBuffer(make([]byte, 0, 512))
|
||||
binary.Write(buf, binary.LittleEndian, b.magicStart0)
|
||||
binary.Write(buf, binary.LittleEndian, b.magicStart1)
|
||||
binary.Write(buf, binary.LittleEndian, b.flags)
|
||||
binary.Write(buf, binary.LittleEndian, b.targetAddr)
|
||||
binary.Write(buf, binary.LittleEndian, b.payloadSize)
|
||||
binary.Write(buf, binary.LittleEndian, b.blockNo)
|
||||
binary.Write(buf, binary.LittleEndian, b.numBlocks)
|
||||
binary.Write(buf, binary.LittleEndian, b.familyID)
|
||||
binary.Write(buf, binary.LittleEndian, b.data)
|
||||
binary.Write(buf, binary.LittleEndian, b.magicEnd)
|
||||
|
||||
return buf.Bytes()
|
||||
}
|
||||
|
||||
// IncrementAddress moves the target address pointer forward by count bytes.
|
||||
func (b *uf2Block) IncrementAddress(count uint32) {
|
||||
b.targetAddr += b.payloadSize
|
||||
}
|
||||
|
||||
// SetData sets the data to be used for the current block.
|
||||
func (b *uf2Block) SetData(d []byte) {
|
||||
b.data = make([]byte, 476)
|
||||
copy(b.data[:], d)
|
||||
}
|
||||
|
||||
// SetBlockNo sets the current block number to be used.
|
||||
func (b *uf2Block) SetBlockNo(bn int) {
|
||||
b.blockNo = uint32(bn)
|
||||
}
|
||||
|
||||
// SetNumBlocks sets the total number of blocks for this UF2 file.
|
||||
func (b *uf2Block) SetNumBlocks(total int) {
|
||||
b.numBlocks = uint32(total)
|
||||
}
|
||||
|
||||
// split splits a slice of bytes into a slice of byte slices of a specific size limit.
|
||||
func split(input []byte, limit int) [][]byte {
|
||||
var block []byte
|
||||
output := make([][]byte, 0, len(input)/limit+1)
|
||||
for len(input) >= limit {
|
||||
block, input = input[:limit], input[limit:]
|
||||
output = append(output, block)
|
||||
}
|
||||
if len(input) > 0 {
|
||||
output = append(output, input[:len(input)])
|
||||
}
|
||||
return output
|
||||
}
|
||||
@@ -1,12 +1,11 @@
|
||||
package builder
|
||||
package main
|
||||
|
||||
import (
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"os/exec"
|
||||
"path/filepath"
|
||||
"strings"
|
||||
|
||||
"github.com/tinygo-org/tinygo/goenv"
|
||||
)
|
||||
|
||||
// These are the GENERIC_SOURCES according to CMakeList.txt.
|
||||
@@ -158,29 +157,16 @@ var aeabiBuiltins = []string{
|
||||
|
||||
func builtinFiles(target string) []string {
|
||||
builtins := append([]string{}, genericBuiltins...) // copy genericBuiltins
|
||||
if strings.HasPrefix(target, "arm") {
|
||||
if target[:3] == "arm" {
|
||||
builtins = append(builtins, aeabiBuiltins...)
|
||||
}
|
||||
return builtins
|
||||
}
|
||||
|
||||
// builtinsDir returns the directory where the sources for compiler-rt are kept.
|
||||
func builtinsDir() string {
|
||||
return filepath.Join(goenv.Get("TINYGOROOT"), "lib", "compiler-rt", "lib", "builtins")
|
||||
}
|
||||
|
||||
// Get the builtins archive, possibly generating it as needed.
|
||||
func loadBuiltins(target string) (path string, err error) {
|
||||
// Try to load a precompiled compiler-rt library.
|
||||
precompiledPath := filepath.Join(goenv.Get("TINYGOROOT"), "pkg", target, "compiler-rt.a")
|
||||
if _, err := os.Stat(precompiledPath); err == nil {
|
||||
// Found a precompiled compiler-rt for this OS/architecture. Return the
|
||||
// path directly.
|
||||
return precompiledPath, nil
|
||||
}
|
||||
|
||||
outfile := "librt-" + target + ".a"
|
||||
builtinsDir := builtinsDir()
|
||||
builtinsDir := filepath.Join(sourceDir(), "lib", "compiler-rt", "lib", "builtins")
|
||||
|
||||
builtins := builtinFiles(target)
|
||||
srcs := make([]string, len(builtins))
|
||||
@@ -188,37 +174,13 @@ func loadBuiltins(target string) (path string, err error) {
|
||||
srcs[i] = filepath.Join(builtinsDir, name)
|
||||
}
|
||||
|
||||
if path, err := cacheLoad(outfile, commands["clang"][0], srcs); path != "" || err != nil {
|
||||
if path, err := cacheLoad(outfile, commands["clang"], srcs); path != "" || err != nil {
|
||||
return path, err
|
||||
}
|
||||
|
||||
var cachepath string
|
||||
err = CompileBuiltins(target, func(path string) error {
|
||||
path, err := cacheStore(path, outfile, commands["clang"][0], srcs)
|
||||
cachepath = path
|
||||
return err
|
||||
})
|
||||
return cachepath, err
|
||||
}
|
||||
|
||||
// CompileBuiltins compiles builtins from compiler-rt into a static library.
|
||||
// When it succeeds, it will call the callback with the resulting path. The path
|
||||
// will be removed after callback returns. If callback returns an error, this is
|
||||
// passed through to the return value of this function.
|
||||
func CompileBuiltins(target string, callback func(path string) error) error {
|
||||
builtinsDir := builtinsDir()
|
||||
|
||||
builtins := builtinFiles(target)
|
||||
srcs := make([]string, len(builtins))
|
||||
for i, name := range builtins {
|
||||
srcs[i] = filepath.Join(builtinsDir, name)
|
||||
}
|
||||
|
||||
dirPrefix := "tinygo-builtins"
|
||||
remapDir := filepath.Join(os.TempDir(), dirPrefix)
|
||||
dir, err := ioutil.TempDir(os.TempDir(), dirPrefix)
|
||||
dir, err := ioutil.TempDir("", "tinygo-builtins")
|
||||
if err != nil {
|
||||
return err
|
||||
return "", err
|
||||
}
|
||||
defer os.RemoveAll(dir)
|
||||
|
||||
@@ -233,24 +195,26 @@ func CompileBuiltins(target string, callback func(path string) error) error {
|
||||
objpath := filepath.Join(dir, objname+".o")
|
||||
objs = append(objs, objpath)
|
||||
srcpath := filepath.Join(builtinsDir, name)
|
||||
// Note: -fdebug-prefix-map is necessary to make the output archive
|
||||
// reproducible. Otherwise the temporary directory is stored in the
|
||||
// archive itself, which varies each run.
|
||||
err := execCommand(commands["clang"], "-c", "-Oz", "-g", "-Werror", "-Wall", "-std=c11", "-fshort-enums", "-nostdlibinc", "-ffunction-sections", "-fdata-sections", "--target="+target, "-fdebug-prefix-map="+dir+"="+remapDir, "-o", objpath, srcpath)
|
||||
cmd := exec.Command(commands["clang"], "-c", "-Oz", "-g", "-Werror", "-Wall", "-std=c11", "-fshort-enums", "-nostdlibinc", "-ffunction-sections", "-fdata-sections", "--target="+target, "-o", objpath, srcpath)
|
||||
cmd.Stdout = os.Stdout
|
||||
cmd.Stderr = os.Stderr
|
||||
cmd.Dir = dir
|
||||
err = cmd.Run()
|
||||
if err != nil {
|
||||
return &commandError{"failed to build", srcpath, err}
|
||||
return "", err
|
||||
}
|
||||
}
|
||||
|
||||
// Put all the object files in a single archive. This archive file will be
|
||||
// used to statically link compiler-rt.
|
||||
// Put all builtins in an archive to link as a static library.
|
||||
arpath := filepath.Join(dir, "librt.a")
|
||||
err = makeArchive(arpath, objs)
|
||||
cmd := exec.Command(commands["ar"], append([]string{"cr", arpath}, objs...)...)
|
||||
cmd.Stdout = os.Stdout
|
||||
cmd.Stderr = os.Stderr
|
||||
cmd.Dir = dir
|
||||
err = cmd.Run()
|
||||
if err != nil {
|
||||
return err
|
||||
return "", err
|
||||
}
|
||||
|
||||
// Give the caller the resulting file. The callback must copy the file,
|
||||
// because after it returns the temporary directory will be removed.
|
||||
return callback(arpath)
|
||||
return cacheStore(arpath, outfile, commands["clang"], srcs)
|
||||
}
|
||||
-1329
File diff suppressed because it is too large
Load Diff
-131
@@ -1,131 +0,0 @@
|
||||
package cgo
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"flag"
|
||||
"fmt"
|
||||
"go/ast"
|
||||
"go/format"
|
||||
"go/parser"
|
||||
"go/token"
|
||||
"go/types"
|
||||
"io/ioutil"
|
||||
"path/filepath"
|
||||
"runtime"
|
||||
"strings"
|
||||
"testing"
|
||||
)
|
||||
|
||||
// Pass -update to go test to update the output of the test files.
|
||||
var flagUpdate = flag.Bool("update", false, "Update images based on test output.")
|
||||
|
||||
func TestCGo(t *testing.T) {
|
||||
var cflags = []string{"--target=armv6m-none-eabi"}
|
||||
|
||||
for _, name := range []string{"basic", "errors", "types", "flags"} {
|
||||
name := name // avoid a race condition
|
||||
t.Run(name, func(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
// Read the AST in memory.
|
||||
path := filepath.Join("testdata", name+".go")
|
||||
fset := token.NewFileSet()
|
||||
f, err := parser.ParseFile(fset, path, nil, parser.ParseComments)
|
||||
if err != nil {
|
||||
t.Fatal("could not parse Go source file:", err)
|
||||
}
|
||||
|
||||
// Process the AST with CGo.
|
||||
cgoAST, cgoErrors := Process([]*ast.File{f}, "testdata", fset, cflags)
|
||||
|
||||
// Check the AST for type errors.
|
||||
var typecheckErrors []error
|
||||
config := types.Config{
|
||||
Error: func(err error) {
|
||||
typecheckErrors = append(typecheckErrors, err)
|
||||
},
|
||||
Importer: simpleImporter{},
|
||||
Sizes: types.SizesFor("gccgo", "arm"),
|
||||
}
|
||||
_, err = config.Check("", fset, []*ast.File{f, cgoAST}, nil)
|
||||
if err != nil && len(typecheckErrors) == 0 {
|
||||
// Only report errors when no type errors are found (an
|
||||
// unexpected condition).
|
||||
t.Error(err)
|
||||
}
|
||||
|
||||
// Store the (formatted) output in a buffer. Format it, so it
|
||||
// becomes easier to read (and will hopefully change less with CGo
|
||||
// changes).
|
||||
buf := &bytes.Buffer{}
|
||||
if len(cgoErrors) != 0 {
|
||||
buf.WriteString("// CGo errors:\n")
|
||||
for _, err := range cgoErrors {
|
||||
buf.WriteString(formatDiagnostic(err))
|
||||
}
|
||||
buf.WriteString("\n")
|
||||
}
|
||||
if len(typecheckErrors) != 0 {
|
||||
buf.WriteString("// Type checking errors after CGo processing:\n")
|
||||
for _, err := range typecheckErrors {
|
||||
buf.WriteString(formatDiagnostic(err))
|
||||
}
|
||||
buf.WriteString("\n")
|
||||
}
|
||||
err = format.Node(buf, fset, cgoAST)
|
||||
if err != nil {
|
||||
t.Errorf("could not write out CGo AST: %v", err)
|
||||
}
|
||||
actual := strings.Replace(string(buf.Bytes()), "\r\n", "\n", -1)
|
||||
|
||||
// Read the file with the expected output, to compare against.
|
||||
outfile := filepath.Join("testdata", name+".out.go")
|
||||
expectedBytes, err := ioutil.ReadFile(outfile)
|
||||
if err != nil {
|
||||
t.Fatalf("could not read expected output: %v", err)
|
||||
}
|
||||
expected := strings.Replace(string(expectedBytes), "\r\n", "\n", -1)
|
||||
|
||||
// Check whether the output is as expected.
|
||||
if expected != actual {
|
||||
// It is not. Test failed.
|
||||
if *flagUpdate {
|
||||
// Update the file with the expected data.
|
||||
err := ioutil.WriteFile(outfile, []byte(actual), 0666)
|
||||
if err != nil {
|
||||
t.Error("could not write updated output file:", err)
|
||||
}
|
||||
return
|
||||
}
|
||||
t.Errorf("output did not match:\n%s", string(actual))
|
||||
}
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
// simpleImporter implements the types.Importer interface, but only allows
|
||||
// importing the unsafe package.
|
||||
type simpleImporter struct {
|
||||
}
|
||||
|
||||
// Import implements the Importer interface. For testing usage only: it only
|
||||
// supports importing the unsafe package.
|
||||
func (i simpleImporter) Import(path string) (*types.Package, error) {
|
||||
switch path {
|
||||
case "unsafe":
|
||||
return types.Unsafe, nil
|
||||
default:
|
||||
return nil, fmt.Errorf("importer not implemented for package %s", path)
|
||||
}
|
||||
}
|
||||
|
||||
// formatDiagnostics formats the error message to be an indented comment. It
|
||||
// also fixes Windows path name issues (backward slashes).
|
||||
func formatDiagnostic(err error) string {
|
||||
msg := err.Error()
|
||||
if runtime.GOOS == "windows" {
|
||||
// Fix Windows path slashes.
|
||||
msg = strings.Replace(msg, "testdata\\", "testdata/", -1)
|
||||
}
|
||||
return "// " + msg + "\n"
|
||||
}
|
||||
-194
@@ -1,194 +0,0 @@
|
||||
package cgo
|
||||
|
||||
// This file implements a parser of a subset of the C language, just enough to
|
||||
// parse common #define statements to Go constant expressions.
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"go/ast"
|
||||
"go/scanner"
|
||||
"go/token"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// parseConst parses the given string as a C constant.
|
||||
func parseConst(pos token.Pos, fset *token.FileSet, value string) (ast.Expr, *scanner.Error) {
|
||||
t := newTokenizer(pos, fset, value)
|
||||
expr, err := parseConstExpr(t)
|
||||
if t.token != token.EOF {
|
||||
return nil, &scanner.Error{
|
||||
Pos: t.fset.Position(t.pos),
|
||||
Msg: "unexpected token " + t.token.String(),
|
||||
}
|
||||
}
|
||||
return expr, err
|
||||
}
|
||||
|
||||
// parseConstExpr parses a stream of C tokens to a Go expression.
|
||||
func parseConstExpr(t *tokenizer) (ast.Expr, *scanner.Error) {
|
||||
switch t.token {
|
||||
case token.LPAREN:
|
||||
lparen := t.pos
|
||||
t.Next()
|
||||
x, err := parseConstExpr(t)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if t.token != token.RPAREN {
|
||||
return nil, unexpectedToken(t, token.RPAREN)
|
||||
}
|
||||
expr := &ast.ParenExpr{
|
||||
Lparen: lparen,
|
||||
X: x,
|
||||
Rparen: t.pos,
|
||||
}
|
||||
t.Next()
|
||||
return expr, nil
|
||||
case token.INT, token.FLOAT, token.STRING, token.CHAR:
|
||||
expr := &ast.BasicLit{
|
||||
ValuePos: t.pos,
|
||||
Kind: t.token,
|
||||
Value: t.value,
|
||||
}
|
||||
t.Next()
|
||||
return expr, nil
|
||||
case token.EOF:
|
||||
return nil, &scanner.Error{
|
||||
Pos: t.fset.Position(t.pos),
|
||||
Msg: "empty constant",
|
||||
}
|
||||
default:
|
||||
return nil, &scanner.Error{
|
||||
Pos: t.fset.Position(t.pos),
|
||||
Msg: fmt.Sprintf("unexpected token %s", t.token),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// unexpectedToken returns an error of the form "unexpected token FOO, expected
|
||||
// BAR".
|
||||
func unexpectedToken(t *tokenizer, expected token.Token) *scanner.Error {
|
||||
return &scanner.Error{
|
||||
Pos: t.fset.Position(t.pos),
|
||||
Msg: fmt.Sprintf("unexpected token %s, expected %s", t.token, expected),
|
||||
}
|
||||
}
|
||||
|
||||
// tokenizer reads C source code and converts it to Go tokens.
|
||||
type tokenizer struct {
|
||||
pos token.Pos
|
||||
fset *token.FileSet
|
||||
token token.Token
|
||||
value string
|
||||
buf string
|
||||
}
|
||||
|
||||
// newTokenizer initializes a new tokenizer, positioned at the first token in
|
||||
// the string.
|
||||
func newTokenizer(start token.Pos, fset *token.FileSet, buf string) *tokenizer {
|
||||
t := &tokenizer{
|
||||
pos: start,
|
||||
fset: fset,
|
||||
buf: buf,
|
||||
token: token.ILLEGAL,
|
||||
}
|
||||
t.Next() // Parse the first token.
|
||||
return t
|
||||
}
|
||||
|
||||
// Next consumes the next token in the stream. There is no return value, read
|
||||
// the next token from the pos, token and value properties.
|
||||
func (t *tokenizer) Next() {
|
||||
t.pos += token.Pos(len(t.value))
|
||||
for {
|
||||
if len(t.buf) == 0 {
|
||||
t.token = token.EOF
|
||||
return
|
||||
}
|
||||
c := t.buf[0]
|
||||
switch {
|
||||
case c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' || c == '\v':
|
||||
// Skip whitespace.
|
||||
// Based on this source, not sure whether it represents C whitespace:
|
||||
// https://en.cppreference.com/w/cpp/string/byte/isspace
|
||||
t.pos++
|
||||
t.buf = t.buf[1:]
|
||||
case c == '(' || c == ')':
|
||||
// Single-character tokens.
|
||||
switch c {
|
||||
case '(':
|
||||
t.token = token.LPAREN
|
||||
case ')':
|
||||
t.token = token.RPAREN
|
||||
}
|
||||
t.value = t.buf[:1]
|
||||
t.buf = t.buf[1:]
|
||||
return
|
||||
case c >= '0' && c <= '9':
|
||||
// Numeric constant (int, float, etc.).
|
||||
// Find the last non-numeric character.
|
||||
tokenLen := len(t.buf)
|
||||
hasDot := false
|
||||
for i, c := range t.buf {
|
||||
if c == '.' {
|
||||
hasDot = true
|
||||
}
|
||||
if (c >= '0' && c <= '9') || c == '.' || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') {
|
||||
tokenLen = i + 1
|
||||
}
|
||||
}
|
||||
t.value = t.buf[:tokenLen]
|
||||
t.buf = t.buf[tokenLen:]
|
||||
if hasDot {
|
||||
// Integer constants are more complicated than this but this is
|
||||
// a close approximation.
|
||||
// https://en.cppreference.com/w/cpp/language/integer_literal
|
||||
t.token = token.FLOAT
|
||||
t.value = strings.TrimRight(t.value, "f")
|
||||
} else {
|
||||
t.token = token.INT
|
||||
t.value = strings.TrimRight(t.value, "uUlL")
|
||||
}
|
||||
return
|
||||
case c == '"':
|
||||
// String constant. Find the first '"' character that is not
|
||||
// preceded by a backslash.
|
||||
escape := false
|
||||
tokenLen := len(t.buf)
|
||||
for i, c := range t.buf {
|
||||
if i != 0 && c == '"' && !escape {
|
||||
tokenLen = i + 1
|
||||
break
|
||||
}
|
||||
if !escape {
|
||||
escape = c == '\\'
|
||||
}
|
||||
}
|
||||
t.token = token.STRING
|
||||
t.value = t.buf[:tokenLen]
|
||||
t.buf = t.buf[tokenLen:]
|
||||
return
|
||||
case c == '\'':
|
||||
// Char (rune) constant. Find the first '\'' character that is not
|
||||
// preceded by a backslash.
|
||||
escape := false
|
||||
tokenLen := len(t.buf)
|
||||
for i, c := range t.buf {
|
||||
if i != 0 && c == '\'' && !escape {
|
||||
tokenLen = i + 1
|
||||
break
|
||||
}
|
||||
if !escape {
|
||||
escape = c == '\\'
|
||||
}
|
||||
}
|
||||
t.token = token.CHAR
|
||||
t.value = t.buf[:tokenLen]
|
||||
t.buf = t.buf[tokenLen:]
|
||||
return
|
||||
default:
|
||||
t.token = token.ILLEGAL
|
||||
return
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -1,59 +0,0 @@
|
||||
package cgo
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"go/format"
|
||||
"go/token"
|
||||
"strings"
|
||||
"testing"
|
||||
)
|
||||
|
||||
func TestParseConst(t *testing.T) {
|
||||
// Test converting a C constant to a Go constant.
|
||||
for _, tc := range []struct {
|
||||
C string
|
||||
Go string
|
||||
}{
|
||||
{`5`, `5`},
|
||||
{`(5)`, `(5)`},
|
||||
{`(((5)))`, `(5)`},
|
||||
{`)`, `error: 1:1: unexpected token )`},
|
||||
{`5)`, `error: 1:2: unexpected token )`},
|
||||
{" \t)", `error: 1:4: unexpected token )`},
|
||||
{`5.8f`, `5.8`},
|
||||
{`foo`, `error: 1:1: unexpected token ILLEGAL`}, // identifiers unimplemented
|
||||
{``, `error: 1:1: empty constant`}, // empty constants not allowed in Go
|
||||
{`"foo"`, `"foo"`},
|
||||
{`"a\\n"`, `"a\\n"`},
|
||||
{`"a\n"`, `"a\n"`},
|
||||
{`"a\""`, `"a\""`},
|
||||
{`'a'`, `'a'`},
|
||||
{`0b10`, `0b10`},
|
||||
{`0x1234_5678`, `0x1234_5678`},
|
||||
} {
|
||||
fset := token.NewFileSet()
|
||||
startPos := fset.AddFile("", -1, 1000).Pos(0)
|
||||
expr, err := parseConst(startPos, fset, tc.C)
|
||||
s := "<invalid>"
|
||||
if err != nil {
|
||||
if !strings.HasPrefix(tc.Go, "error: ") {
|
||||
t.Errorf("expected value %#v for C constant %#v but got error %#v", tc.Go, tc.C, err.Error())
|
||||
continue
|
||||
}
|
||||
s = "error: " + err.Error()
|
||||
} else if expr != nil {
|
||||
// Serialize the Go constant to a string, for more readable test
|
||||
// cases.
|
||||
buf := &bytes.Buffer{}
|
||||
err := format.Node(buf, fset, expr)
|
||||
if err != nil {
|
||||
t.Errorf("could not format expr from C constant %#v: %v", tc.C, err)
|
||||
continue
|
||||
}
|
||||
s = buf.String()
|
||||
}
|
||||
if s != tc.Go {
|
||||
t.Errorf("C constant %#v was parsed to %#v while expecting %#v", tc.C, s, tc.Go)
|
||||
}
|
||||
}
|
||||
}
|
||||
-776
@@ -1,776 +0,0 @@
|
||||
package cgo
|
||||
|
||||
// This file parses a fragment of C with libclang and stores the result for AST
|
||||
// modification. It does not touch the AST itself.
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"go/ast"
|
||||
"go/scanner"
|
||||
"go/token"
|
||||
"path/filepath"
|
||||
"strconv"
|
||||
"strings"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
/*
|
||||
#include <clang-c/Index.h> // if this fails, install libclang-9-dev
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
|
||||
// This struct should be ABI-compatible on all platforms (uintptr_t has the same
|
||||
// alignment etc. as void*) but does not include void* pointers that are not
|
||||
// always real pointers.
|
||||
// The Go garbage collector assumes that all non-nil pointer-typed integers are
|
||||
// actually pointers. This is not always true, as data[1] often contains 0x1,
|
||||
// which is clearly not a valid pointer. Usually the GC won't catch this issue,
|
||||
// but occasionally it will leading to a crash with a vague error message.
|
||||
typedef struct {
|
||||
enum CXCursorKind kind;
|
||||
int xdata;
|
||||
uintptr_t data[3];
|
||||
} GoCXCursor;
|
||||
|
||||
// Forwarding functions. They are implemented in libclang_stubs.c and forward to
|
||||
// the real functions without doing anything else, thus they are entirely
|
||||
// compatible with the versions without tinygo_ prefix. The only difference is
|
||||
// the CXCursor type, which has been replaced with GoCXCursor.
|
||||
GoCXCursor tinygo_clang_getTranslationUnitCursor(CXTranslationUnit tu);
|
||||
unsigned tinygo_clang_visitChildren(GoCXCursor parent, CXCursorVisitor visitor, CXClientData client_data);
|
||||
CXString tinygo_clang_getCursorSpelling(GoCXCursor c);
|
||||
enum CXCursorKind tinygo_clang_getCursorKind(GoCXCursor c);
|
||||
CXType tinygo_clang_getCursorType(GoCXCursor c);
|
||||
GoCXCursor tinygo_clang_getTypeDeclaration(CXType t);
|
||||
CXType tinygo_clang_getTypedefDeclUnderlyingType(GoCXCursor c);
|
||||
CXType tinygo_clang_getCursorResultType(GoCXCursor c);
|
||||
int tinygo_clang_Cursor_getNumArguments(GoCXCursor c);
|
||||
GoCXCursor tinygo_clang_Cursor_getArgument(GoCXCursor c, unsigned i);
|
||||
CXSourceLocation tinygo_clang_getCursorLocation(GoCXCursor c);
|
||||
CXSourceRange tinygo_clang_getCursorExtent(GoCXCursor c);
|
||||
CXTranslationUnit tinygo_clang_Cursor_getTranslationUnit(GoCXCursor c);
|
||||
long long tinygo_clang_getEnumConstantDeclValue(GoCXCursor c);
|
||||
CXType tinygo_clang_getEnumDeclIntegerType(GoCXCursor c);
|
||||
unsigned tinygo_clang_Cursor_isBitField(GoCXCursor c);
|
||||
|
||||
int tinygo_clang_globals_visitor(GoCXCursor c, GoCXCursor parent, CXClientData client_data);
|
||||
int tinygo_clang_struct_visitor(GoCXCursor c, GoCXCursor parent, CXClientData client_data);
|
||||
int tinygo_clang_enum_visitor(GoCXCursor c, GoCXCursor parent, CXClientData client_data);
|
||||
*/
|
||||
import "C"
|
||||
|
||||
// storedRefs stores references to types, used for clang_visitChildren.
|
||||
var storedRefs refMap
|
||||
|
||||
var diagnosticSeverity = [...]string{
|
||||
C.CXDiagnostic_Ignored: "ignored",
|
||||
C.CXDiagnostic_Note: "note",
|
||||
C.CXDiagnostic_Warning: "warning",
|
||||
C.CXDiagnostic_Error: "error",
|
||||
C.CXDiagnostic_Fatal: "fatal",
|
||||
}
|
||||
|
||||
func (p *cgoPackage) parseFragment(fragment string, cflags []string, posFilename string, posLine int) {
|
||||
index := C.clang_createIndex(0, 0)
|
||||
defer C.clang_disposeIndex(index)
|
||||
|
||||
// pretend to be a .c file
|
||||
filenameC := C.CString(posFilename + "!cgo.c")
|
||||
defer C.free(unsafe.Pointer(filenameC))
|
||||
|
||||
// fix up error locations
|
||||
fragment = fmt.Sprintf("# %d %#v\n", posLine+1, posFilename) + fragment
|
||||
|
||||
fragmentC := C.CString(fragment)
|
||||
defer C.free(unsafe.Pointer(fragmentC))
|
||||
|
||||
unsavedFile := C.struct_CXUnsavedFile{
|
||||
Filename: filenameC,
|
||||
Length: C.ulong(len(fragment)),
|
||||
Contents: fragmentC,
|
||||
}
|
||||
|
||||
// convert Go slice of strings to C array of strings.
|
||||
cmdargsC := C.malloc(C.size_t(len(cflags)) * C.size_t(unsafe.Sizeof(uintptr(0))))
|
||||
defer C.free(cmdargsC)
|
||||
cmdargs := (*[1 << 16]*C.char)(cmdargsC)
|
||||
for i, cflag := range cflags {
|
||||
s := C.CString(cflag)
|
||||
cmdargs[i] = s
|
||||
defer C.free(unsafe.Pointer(s))
|
||||
}
|
||||
|
||||
var unit C.CXTranslationUnit
|
||||
errCode := C.clang_parseTranslationUnit2(
|
||||
index,
|
||||
filenameC,
|
||||
(**C.char)(cmdargsC), C.int(len(cflags)), // command line args
|
||||
&unsavedFile, 1, // unsaved files
|
||||
C.CXTranslationUnit_DetailedPreprocessingRecord,
|
||||
&unit)
|
||||
if errCode != 0 {
|
||||
// This is probably a bug in the usage of libclang.
|
||||
panic("cgo: failed to parse source with libclang")
|
||||
}
|
||||
defer C.clang_disposeTranslationUnit(unit)
|
||||
|
||||
if numDiagnostics := int(C.clang_getNumDiagnostics(unit)); numDiagnostics != 0 {
|
||||
addDiagnostic := func(diagnostic C.CXDiagnostic) {
|
||||
spelling := getString(C.clang_getDiagnosticSpelling(diagnostic))
|
||||
severity := diagnosticSeverity[C.clang_getDiagnosticSeverity(diagnostic)]
|
||||
location := C.clang_getDiagnosticLocation(diagnostic)
|
||||
pos := p.getClangLocationPosition(location, unit)
|
||||
p.addError(pos, severity+": "+spelling)
|
||||
}
|
||||
for i := 0; i < numDiagnostics; i++ {
|
||||
diagnostic := C.clang_getDiagnostic(unit, C.uint(i))
|
||||
addDiagnostic(diagnostic)
|
||||
|
||||
// Child diagnostics (like notes on redefinitions).
|
||||
diagnostics := C.clang_getChildDiagnostics(diagnostic)
|
||||
for j := 0; j < int(C.clang_getNumDiagnosticsInSet(diagnostics)); j++ {
|
||||
addDiagnostic(C.clang_getDiagnosticInSet(diagnostics, C.uint(j)))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
ref := storedRefs.Put(p)
|
||||
defer storedRefs.Remove(ref)
|
||||
cursor := C.tinygo_clang_getTranslationUnitCursor(unit)
|
||||
C.tinygo_clang_visitChildren(cursor, C.CXCursorVisitor(C.tinygo_clang_globals_visitor), C.CXClientData(ref))
|
||||
}
|
||||
|
||||
//export tinygo_clang_globals_visitor
|
||||
func tinygo_clang_globals_visitor(c, parent C.GoCXCursor, client_data C.CXClientData) C.int {
|
||||
p := storedRefs.Get(unsafe.Pointer(client_data)).(*cgoPackage)
|
||||
kind := C.tinygo_clang_getCursorKind(c)
|
||||
pos := p.getCursorPosition(c)
|
||||
switch kind {
|
||||
case C.CXCursor_FunctionDecl:
|
||||
name := getString(C.tinygo_clang_getCursorSpelling(c))
|
||||
if _, required := p.missingSymbols[name]; !required {
|
||||
return C.CXChildVisit_Continue
|
||||
}
|
||||
cursorType := C.tinygo_clang_getCursorType(c)
|
||||
if C.clang_isFunctionTypeVariadic(cursorType) != 0 {
|
||||
return C.CXChildVisit_Continue // not supported
|
||||
}
|
||||
numArgs := int(C.tinygo_clang_Cursor_getNumArguments(c))
|
||||
fn := &functionInfo{
|
||||
pos: pos,
|
||||
}
|
||||
p.functions[name] = fn
|
||||
for i := 0; i < numArgs; i++ {
|
||||
arg := C.tinygo_clang_Cursor_getArgument(c, C.uint(i))
|
||||
argName := getString(C.tinygo_clang_getCursorSpelling(arg))
|
||||
argType := C.clang_getArgType(cursorType, C.uint(i))
|
||||
if argName == "" {
|
||||
argName = "$" + strconv.Itoa(i)
|
||||
}
|
||||
fn.args = append(fn.args, paramInfo{
|
||||
name: argName,
|
||||
typeExpr: p.makeASTType(argType, pos),
|
||||
})
|
||||
}
|
||||
resultType := C.tinygo_clang_getCursorResultType(c)
|
||||
if resultType.kind != C.CXType_Void {
|
||||
fn.results = &ast.FieldList{
|
||||
List: []*ast.Field{
|
||||
&ast.Field{
|
||||
Type: p.makeASTType(resultType, pos),
|
||||
},
|
||||
},
|
||||
}
|
||||
}
|
||||
case C.CXCursor_StructDecl:
|
||||
typ := C.tinygo_clang_getCursorType(c)
|
||||
name := getString(C.tinygo_clang_getCursorSpelling(c))
|
||||
if _, required := p.missingSymbols["struct_"+name]; !required {
|
||||
return C.CXChildVisit_Continue
|
||||
}
|
||||
p.makeASTType(typ, pos)
|
||||
case C.CXCursor_TypedefDecl:
|
||||
typedefType := C.tinygo_clang_getCursorType(c)
|
||||
name := getString(C.clang_getTypedefName(typedefType))
|
||||
if _, required := p.missingSymbols[name]; !required {
|
||||
return C.CXChildVisit_Continue
|
||||
}
|
||||
p.makeASTType(typedefType, pos)
|
||||
case C.CXCursor_VarDecl:
|
||||
name := getString(C.tinygo_clang_getCursorSpelling(c))
|
||||
if _, required := p.missingSymbols[name]; !required {
|
||||
return C.CXChildVisit_Continue
|
||||
}
|
||||
cursorType := C.tinygo_clang_getCursorType(c)
|
||||
p.globals[name] = globalInfo{
|
||||
typeExpr: p.makeASTType(cursorType, pos),
|
||||
pos: pos,
|
||||
}
|
||||
case C.CXCursor_MacroDefinition:
|
||||
name := getString(C.tinygo_clang_getCursorSpelling(c))
|
||||
if _, required := p.missingSymbols[name]; !required {
|
||||
return C.CXChildVisit_Continue
|
||||
}
|
||||
sourceRange := C.tinygo_clang_getCursorExtent(c)
|
||||
start := C.clang_getRangeStart(sourceRange)
|
||||
end := C.clang_getRangeEnd(sourceRange)
|
||||
var file, endFile C.CXFile
|
||||
var startOffset, endOffset C.unsigned
|
||||
C.clang_getExpansionLocation(start, &file, nil, nil, &startOffset)
|
||||
if file == nil {
|
||||
p.addError(pos, "internal error: could not find file where macro is defined")
|
||||
break
|
||||
}
|
||||
C.clang_getExpansionLocation(end, &endFile, nil, nil, &endOffset)
|
||||
if file != endFile {
|
||||
p.addError(pos, "internal error: expected start and end location of a macro to be in the same file")
|
||||
break
|
||||
}
|
||||
if startOffset > endOffset {
|
||||
p.addError(pos, "internal error: start offset of macro is after end offset")
|
||||
break
|
||||
}
|
||||
|
||||
// read file contents and extract the relevant byte range
|
||||
tu := C.tinygo_clang_Cursor_getTranslationUnit(c)
|
||||
var size C.size_t
|
||||
sourcePtr := C.clang_getFileContents(tu, file, &size)
|
||||
if endOffset >= C.uint(size) {
|
||||
p.addError(pos, "internal error: end offset of macro lies after end of file")
|
||||
break
|
||||
}
|
||||
source := string(((*[1 << 28]byte)(unsafe.Pointer(sourcePtr)))[startOffset:endOffset:endOffset])
|
||||
if !strings.HasPrefix(source, name) {
|
||||
p.addError(pos, fmt.Sprintf("internal error: expected macro value to start with %#v, got %#v", name, source))
|
||||
break
|
||||
}
|
||||
value := source[len(name):]
|
||||
// Try to convert this #define into a Go constant expression.
|
||||
expr, err := parseConst(pos+token.Pos(len(name)), p.fset, value)
|
||||
if err != nil {
|
||||
p.errors = append(p.errors, err)
|
||||
}
|
||||
if expr != nil {
|
||||
// Parsing was successful.
|
||||
p.constants[name] = constantInfo{expr, pos}
|
||||
}
|
||||
case C.CXCursor_EnumDecl:
|
||||
// Visit all enums, because the fields may be used even when the enum
|
||||
// type itself is not.
|
||||
typ := C.tinygo_clang_getCursorType(c)
|
||||
p.makeASTType(typ, pos)
|
||||
}
|
||||
return C.CXChildVisit_Continue
|
||||
}
|
||||
|
||||
func getString(clangString C.CXString) (s string) {
|
||||
rawString := C.clang_getCString(clangString)
|
||||
s = C.GoString(rawString)
|
||||
C.clang_disposeString(clangString)
|
||||
return
|
||||
}
|
||||
|
||||
// getCursorPosition returns a usable token.Pos from a libclang cursor.
|
||||
func (p *cgoPackage) getCursorPosition(cursor C.GoCXCursor) token.Pos {
|
||||
return p.getClangLocationPosition(C.tinygo_clang_getCursorLocation(cursor), C.tinygo_clang_Cursor_getTranslationUnit(cursor))
|
||||
}
|
||||
|
||||
// getClangLocationPosition returns a usable token.Pos based on a libclang
|
||||
// location and translation unit. If the file for this cursor has not been seen
|
||||
// before, it is read from libclang (which already has the file in memory) and
|
||||
// added to the token.FileSet.
|
||||
func (p *cgoPackage) getClangLocationPosition(location C.CXSourceLocation, tu C.CXTranslationUnit) token.Pos {
|
||||
var file C.CXFile
|
||||
var line C.unsigned
|
||||
var column C.unsigned
|
||||
var offset C.unsigned
|
||||
C.clang_getExpansionLocation(location, &file, &line, &column, &offset)
|
||||
if line == 0 || file == nil {
|
||||
// Invalid token.
|
||||
return token.NoPos
|
||||
}
|
||||
filename := getString(C.clang_getFileName(file))
|
||||
if _, ok := p.tokenFiles[filename]; !ok {
|
||||
// File has not been seen before in this package, add line information
|
||||
// now by reading the file from libclang.
|
||||
var size C.size_t
|
||||
sourcePtr := C.clang_getFileContents(tu, file, &size)
|
||||
source := ((*[1 << 28]byte)(unsafe.Pointer(sourcePtr)))[:size:size]
|
||||
lines := []int{0}
|
||||
for i := 0; i < len(source)-1; i++ {
|
||||
if source[i] == '\n' {
|
||||
lines = append(lines, i+1)
|
||||
}
|
||||
}
|
||||
f := p.fset.AddFile(filename, -1, int(size))
|
||||
f.SetLines(lines)
|
||||
p.tokenFiles[filename] = f
|
||||
}
|
||||
positionFile := p.tokenFiles[filename]
|
||||
|
||||
// Check for alternative line/column information (set with a line directive).
|
||||
var filename2String C.CXString
|
||||
var line2 C.unsigned
|
||||
var column2 C.unsigned
|
||||
C.clang_getPresumedLocation(location, &filename2String, &line2, &column2)
|
||||
filename2 := getString(filename2String)
|
||||
if filename2 != filename || line2 != line || column2 != column {
|
||||
// The location was changed with a preprocessor directive.
|
||||
// TODO: this only works for locations that are added in order. Adding
|
||||
// line/column info to a file that already has line/column info after
|
||||
// the given offset is ignored.
|
||||
positionFile.AddLineColumnInfo(int(offset), filename2, int(line2), int(column2))
|
||||
}
|
||||
|
||||
return positionFile.Pos(int(offset))
|
||||
}
|
||||
|
||||
// addError is a utility function to add an error to the list of errors. It will
|
||||
// convert the token position to a line/column position first, and call
|
||||
// addErrorAt.
|
||||
func (p *cgoPackage) addError(pos token.Pos, msg string) {
|
||||
p.addErrorAt(p.fset.PositionFor(pos, true), msg)
|
||||
}
|
||||
|
||||
// addErrorAfter is like addError, but adds the text `after` to the source
|
||||
// location.
|
||||
func (p *cgoPackage) addErrorAfter(pos token.Pos, after, msg string) {
|
||||
position := p.fset.PositionFor(pos, true)
|
||||
lines := strings.Split(after, "\n")
|
||||
if len(lines) != 1 {
|
||||
// Adjust lines.
|
||||
// For why we can't just do pos+token.Pos(len(after)), see:
|
||||
// https://github.com/golang/go/issues/35803
|
||||
position.Line += len(lines) - 1
|
||||
position.Column = len(lines[len(lines)-1]) + 1
|
||||
} else {
|
||||
position.Column += len(after)
|
||||
}
|
||||
p.addErrorAt(position, msg)
|
||||
}
|
||||
|
||||
// addErrorAt is a utility function to add an error to the list of errors.
|
||||
func (p *cgoPackage) addErrorAt(position token.Position, msg string) {
|
||||
if filepath.IsAbs(position.Filename) {
|
||||
// Relative paths for readability, like other Go parser errors.
|
||||
relpath, err := filepath.Rel(p.dir, position.Filename)
|
||||
if err == nil {
|
||||
position.Filename = relpath
|
||||
}
|
||||
}
|
||||
p.errors = append(p.errors, scanner.Error{
|
||||
Pos: position,
|
||||
Msg: msg,
|
||||
})
|
||||
}
|
||||
|
||||
// makeASTType return the ast.Expr for the given libclang type. In other words,
|
||||
// it converts a libclang type to a type in the Go AST.
|
||||
func (p *cgoPackage) makeASTType(typ C.CXType, pos token.Pos) ast.Expr {
|
||||
var typeName string
|
||||
switch typ.kind {
|
||||
case C.CXType_Char_S, C.CXType_Char_U:
|
||||
typeName = "C.char"
|
||||
case C.CXType_SChar:
|
||||
typeName = "C.schar"
|
||||
case C.CXType_UChar:
|
||||
typeName = "C.uchar"
|
||||
case C.CXType_Short:
|
||||
typeName = "C.short"
|
||||
case C.CXType_UShort:
|
||||
typeName = "C.ushort"
|
||||
case C.CXType_Int:
|
||||
typeName = "C.int"
|
||||
case C.CXType_UInt:
|
||||
typeName = "C.uint"
|
||||
case C.CXType_Long:
|
||||
typeName = "C.long"
|
||||
case C.CXType_ULong:
|
||||
typeName = "C.ulong"
|
||||
case C.CXType_LongLong:
|
||||
typeName = "C.longlong"
|
||||
case C.CXType_ULongLong:
|
||||
typeName = "C.ulonglong"
|
||||
case C.CXType_Bool:
|
||||
typeName = "bool"
|
||||
case C.CXType_Float, C.CXType_Double, C.CXType_LongDouble:
|
||||
switch C.clang_Type_getSizeOf(typ) {
|
||||
case 4:
|
||||
typeName = "float32"
|
||||
case 8:
|
||||
typeName = "float64"
|
||||
default:
|
||||
// Don't do anything, rely on the fallback code to show a somewhat
|
||||
// sensible error message like "undeclared name: C.long double".
|
||||
}
|
||||
case C.CXType_Complex:
|
||||
switch C.clang_Type_getSizeOf(typ) {
|
||||
case 8:
|
||||
typeName = "complex64"
|
||||
case 16:
|
||||
typeName = "complex128"
|
||||
}
|
||||
case C.CXType_Pointer:
|
||||
pointeeType := C.clang_getPointeeType(typ)
|
||||
if pointeeType.kind == C.CXType_Void {
|
||||
// void* type is translated to Go as unsafe.Pointer
|
||||
return &ast.SelectorExpr{
|
||||
X: &ast.Ident{
|
||||
NamePos: pos,
|
||||
Name: "unsafe",
|
||||
},
|
||||
Sel: &ast.Ident{
|
||||
NamePos: pos,
|
||||
Name: "Pointer",
|
||||
},
|
||||
}
|
||||
}
|
||||
return &ast.StarExpr{
|
||||
Star: pos,
|
||||
X: p.makeASTType(pointeeType, pos),
|
||||
}
|
||||
case C.CXType_ConstantArray:
|
||||
return &ast.ArrayType{
|
||||
Lbrack: pos,
|
||||
Len: &ast.BasicLit{
|
||||
ValuePos: pos,
|
||||
Kind: token.INT,
|
||||
Value: strconv.FormatInt(int64(C.clang_getArraySize(typ)), 10),
|
||||
},
|
||||
Elt: p.makeASTType(C.clang_getElementType(typ), pos),
|
||||
}
|
||||
case C.CXType_FunctionProto:
|
||||
// Be compatible with gc, which uses the *[0]byte type for function
|
||||
// pointer types.
|
||||
// Return type [0]byte because this is a function type, not a pointer to
|
||||
// this function type.
|
||||
return &ast.ArrayType{
|
||||
Lbrack: pos,
|
||||
Len: &ast.BasicLit{
|
||||
ValuePos: pos,
|
||||
Kind: token.INT,
|
||||
Value: "0",
|
||||
},
|
||||
Elt: &ast.Ident{
|
||||
NamePos: pos,
|
||||
Name: "byte",
|
||||
},
|
||||
}
|
||||
case C.CXType_Typedef:
|
||||
name := getString(C.clang_getTypedefName(typ))
|
||||
if _, ok := p.typedefs[name]; !ok {
|
||||
p.typedefs[name] = nil // don't recurse
|
||||
c := C.tinygo_clang_getTypeDeclaration(typ)
|
||||
underlyingType := C.tinygo_clang_getTypedefDeclUnderlyingType(c)
|
||||
expr := p.makeASTType(underlyingType, pos)
|
||||
if strings.HasPrefix(name, "_Cgo_") {
|
||||
expr := expr.(*ast.Ident)
|
||||
typeSize := C.clang_Type_getSizeOf(underlyingType)
|
||||
switch expr.Name {
|
||||
case "C.char":
|
||||
if typeSize != 1 {
|
||||
// This happens for some very special purpose architectures
|
||||
// (DSPs etc.) that are not currently targeted.
|
||||
// https://www.embecosm.com/2017/04/18/non-8-bit-char-support-in-clang-and-llvm/
|
||||
p.addError(pos, fmt.Sprintf("unknown char width: %d", typeSize))
|
||||
}
|
||||
switch underlyingType.kind {
|
||||
case C.CXType_Char_S:
|
||||
expr.Name = "int8"
|
||||
case C.CXType_Char_U:
|
||||
expr.Name = "uint8"
|
||||
}
|
||||
case "C.schar", "C.short", "C.int", "C.long", "C.longlong":
|
||||
switch typeSize {
|
||||
case 1:
|
||||
expr.Name = "int8"
|
||||
case 2:
|
||||
expr.Name = "int16"
|
||||
case 4:
|
||||
expr.Name = "int32"
|
||||
case 8:
|
||||
expr.Name = "int64"
|
||||
}
|
||||
case "C.uchar", "C.ushort", "C.uint", "C.ulong", "C.ulonglong":
|
||||
switch typeSize {
|
||||
case 1:
|
||||
expr.Name = "uint8"
|
||||
case 2:
|
||||
expr.Name = "uint16"
|
||||
case 4:
|
||||
expr.Name = "uint32"
|
||||
case 8:
|
||||
expr.Name = "uint64"
|
||||
}
|
||||
}
|
||||
}
|
||||
p.typedefs[name] = &typedefInfo{
|
||||
typeExpr: expr,
|
||||
pos: pos,
|
||||
}
|
||||
}
|
||||
return &ast.Ident{
|
||||
NamePos: pos,
|
||||
Name: "C." + name,
|
||||
}
|
||||
case C.CXType_Elaborated:
|
||||
underlying := C.clang_Type_getNamedType(typ)
|
||||
switch underlying.kind {
|
||||
case C.CXType_Record:
|
||||
return p.makeASTType(underlying, pos)
|
||||
case C.CXType_Enum:
|
||||
return p.makeASTType(underlying, pos)
|
||||
default:
|
||||
typeKindSpelling := getString(C.clang_getTypeKindSpelling(underlying.kind))
|
||||
p.addError(pos, fmt.Sprintf("unknown elaborated type (libclang type kind %s)", typeKindSpelling))
|
||||
typeName = "<unknown>"
|
||||
}
|
||||
case C.CXType_Record:
|
||||
cursor := C.tinygo_clang_getTypeDeclaration(typ)
|
||||
name := getString(C.tinygo_clang_getCursorSpelling(cursor))
|
||||
var cgoRecordPrefix string
|
||||
switch C.tinygo_clang_getCursorKind(cursor) {
|
||||
case C.CXCursor_StructDecl:
|
||||
cgoRecordPrefix = "struct_"
|
||||
case C.CXCursor_UnionDecl:
|
||||
cgoRecordPrefix = "union_"
|
||||
default:
|
||||
// makeASTRecordType will create an appropriate error.
|
||||
cgoRecordPrefix = "record_"
|
||||
}
|
||||
if name == "" {
|
||||
// Anonymous record, probably inside a typedef.
|
||||
typeInfo := p.makeASTRecordType(cursor, pos)
|
||||
if typeInfo.bitfields != nil || typeInfo.unionSize != 0 {
|
||||
// This record is a union or is a struct with bitfields, so we
|
||||
// have to declare it as a named type (for getters/setters to
|
||||
// work).
|
||||
p.anonStructNum++
|
||||
cgoName := cgoRecordPrefix + strconv.Itoa(p.anonStructNum)
|
||||
p.elaboratedTypes[cgoName] = typeInfo
|
||||
return &ast.Ident{
|
||||
NamePos: pos,
|
||||
Name: "C." + cgoName,
|
||||
}
|
||||
}
|
||||
return typeInfo.typeExpr
|
||||
} else {
|
||||
cgoName := cgoRecordPrefix + name
|
||||
if _, ok := p.elaboratedTypes[cgoName]; !ok {
|
||||
p.elaboratedTypes[cgoName] = nil // predeclare (to avoid endless recursion)
|
||||
p.elaboratedTypes[cgoName] = p.makeASTRecordType(cursor, pos)
|
||||
}
|
||||
return &ast.Ident{
|
||||
NamePos: pos,
|
||||
Name: "C." + cgoName,
|
||||
}
|
||||
}
|
||||
case C.CXType_Enum:
|
||||
cursor := C.tinygo_clang_getTypeDeclaration(typ)
|
||||
name := getString(C.tinygo_clang_getCursorSpelling(cursor))
|
||||
underlying := C.tinygo_clang_getEnumDeclIntegerType(cursor)
|
||||
if name == "" {
|
||||
// anonymous enum
|
||||
ref := storedRefs.Put(p)
|
||||
defer storedRefs.Remove(ref)
|
||||
C.tinygo_clang_visitChildren(cursor, C.CXCursorVisitor(C.tinygo_clang_enum_visitor), C.CXClientData(ref))
|
||||
return p.makeASTType(underlying, pos)
|
||||
} else {
|
||||
// named enum
|
||||
if _, ok := p.enums[name]; !ok {
|
||||
ref := storedRefs.Put(p)
|
||||
defer storedRefs.Remove(ref)
|
||||
C.tinygo_clang_visitChildren(cursor, C.CXCursorVisitor(C.tinygo_clang_enum_visitor), C.CXClientData(ref))
|
||||
p.enums[name] = enumInfo{
|
||||
typeExpr: p.makeASTType(underlying, pos),
|
||||
pos: pos,
|
||||
}
|
||||
}
|
||||
return &ast.Ident{
|
||||
NamePos: pos,
|
||||
Name: "C.enum_" + name,
|
||||
}
|
||||
}
|
||||
}
|
||||
if typeName == "" {
|
||||
// Report this as an error.
|
||||
typeSpelling := getString(C.clang_getTypeSpelling(typ))
|
||||
typeKindSpelling := getString(C.clang_getTypeKindSpelling(typ.kind))
|
||||
p.addError(pos, fmt.Sprintf("unknown C type: %v (libclang type kind %s)", typeSpelling, typeKindSpelling))
|
||||
typeName = "C.<unknown>"
|
||||
}
|
||||
return &ast.Ident{
|
||||
NamePos: pos,
|
||||
Name: typeName,
|
||||
}
|
||||
}
|
||||
|
||||
// makeASTRecordType parses a C record (struct or union) and translates it into
|
||||
// a Go struct type.
|
||||
func (p *cgoPackage) makeASTRecordType(cursor C.GoCXCursor, pos token.Pos) *elaboratedTypeInfo {
|
||||
fieldList := &ast.FieldList{
|
||||
Opening: pos,
|
||||
Closing: pos,
|
||||
}
|
||||
var bitfieldList []bitfieldInfo
|
||||
inBitfield := false
|
||||
bitfieldNum := 0
|
||||
ref := storedRefs.Put(struct {
|
||||
fieldList *ast.FieldList
|
||||
pkg *cgoPackage
|
||||
inBitfield *bool
|
||||
bitfieldNum *int
|
||||
bitfieldList *[]bitfieldInfo
|
||||
}{fieldList, p, &inBitfield, &bitfieldNum, &bitfieldList})
|
||||
defer storedRefs.Remove(ref)
|
||||
C.tinygo_clang_visitChildren(cursor, C.CXCursorVisitor(C.tinygo_clang_struct_visitor), C.CXClientData(ref))
|
||||
renameFieldKeywords(fieldList)
|
||||
switch C.tinygo_clang_getCursorKind(cursor) {
|
||||
case C.CXCursor_StructDecl:
|
||||
return &elaboratedTypeInfo{
|
||||
typeExpr: &ast.StructType{
|
||||
Struct: pos,
|
||||
Fields: fieldList,
|
||||
},
|
||||
pos: pos,
|
||||
bitfields: bitfieldList,
|
||||
}
|
||||
case C.CXCursor_UnionDecl:
|
||||
typeInfo := &elaboratedTypeInfo{
|
||||
typeExpr: &ast.StructType{
|
||||
Struct: pos,
|
||||
Fields: fieldList,
|
||||
},
|
||||
pos: pos,
|
||||
bitfields: bitfieldList,
|
||||
}
|
||||
if len(fieldList.List) <= 1 {
|
||||
// Useless union, treat it as a regular struct.
|
||||
return typeInfo
|
||||
}
|
||||
if bitfieldList != nil {
|
||||
// This is valid C... but please don't do this.
|
||||
p.addError(pos, "bitfield in a union is not supported")
|
||||
}
|
||||
typ := C.tinygo_clang_getCursorType(cursor)
|
||||
alignInBytes := int64(C.clang_Type_getAlignOf(typ))
|
||||
sizeInBytes := int64(C.clang_Type_getSizeOf(typ))
|
||||
if sizeInBytes == 0 {
|
||||
p.addError(pos, "zero-length union is not supported")
|
||||
}
|
||||
typeInfo.unionSize = sizeInBytes
|
||||
typeInfo.unionAlign = alignInBytes
|
||||
return typeInfo
|
||||
default:
|
||||
cursorKind := C.tinygo_clang_getCursorKind(cursor)
|
||||
cursorKindSpelling := getString(C.clang_getCursorKindSpelling(cursorKind))
|
||||
p.addError(pos, fmt.Sprintf("expected StructDecl or UnionDecl, not %s", cursorKindSpelling))
|
||||
return &elaboratedTypeInfo{
|
||||
typeExpr: &ast.StructType{
|
||||
Struct: pos,
|
||||
},
|
||||
pos: pos,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//export tinygo_clang_struct_visitor
|
||||
func tinygo_clang_struct_visitor(c, parent C.GoCXCursor, client_data C.CXClientData) C.int {
|
||||
passed := storedRefs.Get(unsafe.Pointer(client_data)).(struct {
|
||||
fieldList *ast.FieldList
|
||||
pkg *cgoPackage
|
||||
inBitfield *bool
|
||||
bitfieldNum *int
|
||||
bitfieldList *[]bitfieldInfo
|
||||
})
|
||||
fieldList := passed.fieldList
|
||||
p := passed.pkg
|
||||
inBitfield := passed.inBitfield
|
||||
bitfieldNum := passed.bitfieldNum
|
||||
bitfieldList := passed.bitfieldList
|
||||
pos := p.getCursorPosition(c)
|
||||
switch cursorKind := C.tinygo_clang_getCursorKind(c); cursorKind {
|
||||
case C.CXCursor_FieldDecl:
|
||||
// Expected. This is a regular field.
|
||||
case C.CXCursor_StructDecl, C.CXCursor_UnionDecl:
|
||||
// Ignore. The next field will be the struct/union itself.
|
||||
return C.CXChildVisit_Continue
|
||||
default:
|
||||
cursorKindSpelling := getString(C.clang_getCursorKindSpelling(cursorKind))
|
||||
p.addError(pos, fmt.Sprintf("expected FieldDecl in struct or union, not %s", cursorKindSpelling))
|
||||
return C.CXChildVisit_Continue
|
||||
}
|
||||
name := getString(C.tinygo_clang_getCursorSpelling(c))
|
||||
if name == "" {
|
||||
// Assume this is a bitfield of 0 bits.
|
||||
// Warning: this is not necessarily true!
|
||||
return C.CXChildVisit_Continue
|
||||
}
|
||||
typ := C.tinygo_clang_getCursorType(c)
|
||||
field := &ast.Field{
|
||||
Type: p.makeASTType(typ, p.getCursorPosition(c)),
|
||||
}
|
||||
offsetof := int64(C.clang_Type_getOffsetOf(C.tinygo_clang_getCursorType(parent), C.CString(name)))
|
||||
alignOf := int64(C.clang_Type_getAlignOf(typ) * 8)
|
||||
bitfieldOffset := offsetof % alignOf
|
||||
if bitfieldOffset != 0 {
|
||||
if C.tinygo_clang_Cursor_isBitField(c) != 1 {
|
||||
p.addError(pos, "expected a bitfield")
|
||||
return C.CXChildVisit_Continue
|
||||
}
|
||||
if !*inBitfield {
|
||||
*bitfieldNum++
|
||||
}
|
||||
bitfieldName := "__bitfield_" + strconv.Itoa(*bitfieldNum)
|
||||
prevField := fieldList.List[len(fieldList.List)-1]
|
||||
if !*inBitfield {
|
||||
// The previous element also was a bitfield, but wasn't noticed
|
||||
// then. Add it now.
|
||||
*inBitfield = true
|
||||
*bitfieldList = append(*bitfieldList, bitfieldInfo{
|
||||
field: prevField,
|
||||
name: prevField.Names[0].Name,
|
||||
startBit: 0,
|
||||
pos: prevField.Names[0].NamePos,
|
||||
})
|
||||
prevField.Names[0].Name = bitfieldName
|
||||
prevField.Names[0].Obj.Name = bitfieldName
|
||||
}
|
||||
prevBitfield := &(*bitfieldList)[len(*bitfieldList)-1]
|
||||
prevBitfield.endBit = bitfieldOffset
|
||||
*bitfieldList = append(*bitfieldList, bitfieldInfo{
|
||||
field: prevField,
|
||||
name: name,
|
||||
startBit: bitfieldOffset,
|
||||
pos: pos,
|
||||
})
|
||||
return C.CXChildVisit_Continue
|
||||
}
|
||||
*inBitfield = false
|
||||
field.Names = []*ast.Ident{
|
||||
&ast.Ident{
|
||||
NamePos: pos,
|
||||
Name: name,
|
||||
Obj: &ast.Object{
|
||||
Kind: ast.Var,
|
||||
Name: name,
|
||||
Decl: field,
|
||||
},
|
||||
},
|
||||
}
|
||||
fieldList.List = append(fieldList.List, field)
|
||||
return C.CXChildVisit_Continue
|
||||
}
|
||||
|
||||
//export tinygo_clang_enum_visitor
|
||||
func tinygo_clang_enum_visitor(c, parent C.GoCXCursor, client_data C.CXClientData) C.int {
|
||||
p := storedRefs.Get(unsafe.Pointer(client_data)).(*cgoPackage)
|
||||
name := getString(C.tinygo_clang_getCursorSpelling(c))
|
||||
pos := p.getCursorPosition(c)
|
||||
value := C.tinygo_clang_getEnumConstantDeclValue(c)
|
||||
p.constants[name] = constantInfo{
|
||||
expr: &ast.BasicLit{pos, token.INT, strconv.FormatInt(int64(value), 10)},
|
||||
pos: pos,
|
||||
}
|
||||
return C.CXChildVisit_Continue
|
||||
}
|
||||
@@ -1,11 +0,0 @@
|
||||
// +build !byollvm
|
||||
|
||||
package cgo
|
||||
|
||||
/*
|
||||
#cgo linux CFLAGS: -I/usr/lib/llvm-9/include
|
||||
#cgo darwin CFLAGS: -I/usr/local/opt/llvm@9/include
|
||||
#cgo linux LDFLAGS: -L/usr/lib/llvm-9/lib -lclang
|
||||
#cgo darwin LDFLAGS: -L/usr/local/opt/llvm@9/lib -lclang -lffi
|
||||
*/
|
||||
import "C"
|
||||
@@ -1,70 +0,0 @@
|
||||
|
||||
// This file implements some small trampoline functions. The signatures
|
||||
// are slightly different from the ones defined in libclang.go, but they
|
||||
// should be ABI compatible.
|
||||
|
||||
#include <clang-c/Index.h> // if this fails, install libclang-9-dev
|
||||
|
||||
CXCursor tinygo_clang_getTranslationUnitCursor(CXTranslationUnit tu) {
|
||||
return clang_getTranslationUnitCursor(tu);
|
||||
}
|
||||
|
||||
unsigned tinygo_clang_visitChildren(CXCursor parent, CXCursorVisitor visitor, CXClientData client_data) {
|
||||
return clang_visitChildren(parent, visitor, client_data);
|
||||
}
|
||||
|
||||
CXString tinygo_clang_getCursorSpelling(CXCursor c) {
|
||||
return clang_getCursorSpelling(c);
|
||||
}
|
||||
|
||||
enum CXCursorKind tinygo_clang_getCursorKind(CXCursor c) {
|
||||
return clang_getCursorKind(c);
|
||||
}
|
||||
|
||||
CXType tinygo_clang_getCursorType(CXCursor c) {
|
||||
return clang_getCursorType(c);
|
||||
}
|
||||
|
||||
CXCursor tinygo_clang_getTypeDeclaration(CXType t) {
|
||||
return clang_getTypeDeclaration(t);
|
||||
}
|
||||
|
||||
CXType tinygo_clang_getTypedefDeclUnderlyingType(CXCursor c) {
|
||||
return clang_getTypedefDeclUnderlyingType(c);
|
||||
}
|
||||
|
||||
CXType tinygo_clang_getCursorResultType(CXCursor c) {
|
||||
return clang_getCursorResultType(c);
|
||||
}
|
||||
|
||||
int tinygo_clang_Cursor_getNumArguments(CXCursor c) {
|
||||
return clang_Cursor_getNumArguments(c);
|
||||
}
|
||||
|
||||
CXCursor tinygo_clang_Cursor_getArgument(CXCursor c, unsigned i) {
|
||||
return clang_Cursor_getArgument(c, i);
|
||||
}
|
||||
|
||||
CXSourceLocation tinygo_clang_getCursorLocation(CXCursor c) {
|
||||
return clang_getCursorLocation(c);
|
||||
}
|
||||
|
||||
CXSourceRange tinygo_clang_getCursorExtent(CXCursor c) {
|
||||
return clang_getCursorExtent(c);
|
||||
}
|
||||
|
||||
CXTranslationUnit tinygo_clang_Cursor_getTranslationUnit(CXCursor c) {
|
||||
return clang_Cursor_getTranslationUnit(c);
|
||||
}
|
||||
|
||||
long long tinygo_clang_getEnumConstantDeclValue(CXCursor c) {
|
||||
return clang_getEnumConstantDeclValue(c);
|
||||
}
|
||||
|
||||
CXType tinygo_clang_getEnumDeclIntegerType(CXCursor c) {
|
||||
return clang_getEnumDeclIntegerType(c);
|
||||
}
|
||||
|
||||
unsigned tinygo_clang_Cursor_isBitField(CXCursor c) {
|
||||
return clang_Cursor_isBitField(c);
|
||||
}
|
||||
-301
@@ -1,301 +0,0 @@
|
||||
// Copyright 2018 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// This file has been copied from the Go 1.13 release tree.
|
||||
|
||||
// Checking of compiler and linker flags.
|
||||
// We must avoid flags like -fplugin=, which can allow
|
||||
// arbitrary code execution during the build.
|
||||
// Do not make changes here without carefully
|
||||
// considering the implications.
|
||||
// (That's why the code is isolated in a file named security.go.)
|
||||
//
|
||||
// Note that -Wl,foo means split foo on commas and pass to
|
||||
// the linker, so that -Wl,-foo,bar means pass -foo bar to
|
||||
// the linker. Similarly -Wa,foo for the assembler and so on.
|
||||
// If any of these are permitted, the wildcard portion must
|
||||
// disallow commas.
|
||||
//
|
||||
// Note also that GNU binutils accept any argument @foo
|
||||
// as meaning "read more flags from the file foo", so we must
|
||||
// guard against any command-line argument beginning with @,
|
||||
// even things like "-I @foo".
|
||||
// We use safeArg (which is even more conservative)
|
||||
// to reject these.
|
||||
//
|
||||
// Even worse, gcc -I@foo (one arg) turns into cc1 -I @foo (two args),
|
||||
// so although gcc doesn't expand the @foo, cc1 will.
|
||||
// So out of paranoia, we reject @ at the beginning of every
|
||||
// flag argument that might be split into its own argument.
|
||||
|
||||
package cgo
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"os"
|
||||
"regexp"
|
||||
"strings"
|
||||
"unicode/utf8"
|
||||
)
|
||||
|
||||
var re = regexp.MustCompile
|
||||
|
||||
var validCompilerFlags = []*regexp.Regexp{
|
||||
re(`-D([A-Za-z_].*)`),
|
||||
re(`-F([^@\-].*)`),
|
||||
re(`-I([^@\-].*)`),
|
||||
re(`-O`),
|
||||
re(`-O([^@\-].*)`),
|
||||
re(`-W`),
|
||||
re(`-W([^@,]+)`), // -Wall but not -Wa,-foo.
|
||||
re(`-Wa,-mbig-obj`),
|
||||
re(`-Wp,-D([A-Za-z_].*)`),
|
||||
re(`-ansi`),
|
||||
re(`-f(no-)?asynchronous-unwind-tables`),
|
||||
re(`-f(no-)?blocks`),
|
||||
re(`-f(no-)builtin-[a-zA-Z0-9_]*`),
|
||||
re(`-f(no-)?common`),
|
||||
re(`-f(no-)?constant-cfstrings`),
|
||||
re(`-fdiagnostics-show-note-include-stack`),
|
||||
re(`-f(no-)?eliminate-unused-debug-types`),
|
||||
re(`-f(no-)?exceptions`),
|
||||
re(`-f(no-)?fast-math`),
|
||||
re(`-f(no-)?inline-functions`),
|
||||
re(`-finput-charset=([^@\-].*)`),
|
||||
re(`-f(no-)?fat-lto-objects`),
|
||||
re(`-f(no-)?keep-inline-dllexport`),
|
||||
re(`-f(no-)?lto`),
|
||||
re(`-fmacro-backtrace-limit=(.+)`),
|
||||
re(`-fmessage-length=(.+)`),
|
||||
re(`-f(no-)?modules`),
|
||||
re(`-f(no-)?objc-arc`),
|
||||
re(`-f(no-)?objc-nonfragile-abi`),
|
||||
re(`-f(no-)?objc-legacy-dispatch`),
|
||||
re(`-f(no-)?omit-frame-pointer`),
|
||||
re(`-f(no-)?openmp(-simd)?`),
|
||||
re(`-f(no-)?permissive`),
|
||||
re(`-f(no-)?(pic|PIC|pie|PIE)`),
|
||||
re(`-f(no-)?plt`),
|
||||
re(`-f(no-)?rtti`),
|
||||
re(`-f(no-)?split-stack`),
|
||||
re(`-f(no-)?stack-(.+)`),
|
||||
re(`-f(no-)?strict-aliasing`),
|
||||
re(`-f(un)signed-char`),
|
||||
re(`-f(no-)?use-linker-plugin`), // safe if -B is not used; we don't permit -B
|
||||
re(`-f(no-)?visibility-inlines-hidden`),
|
||||
re(`-fsanitize=(.+)`),
|
||||
re(`-ftemplate-depth-(.+)`),
|
||||
re(`-fvisibility=(.+)`),
|
||||
re(`-g([^@\-].*)?`),
|
||||
re(`-m32`),
|
||||
re(`-m64`),
|
||||
re(`-m(abi|arch|cpu|fpu|tune)=([^@\-].*)`),
|
||||
re(`-m(no-)?v?aes`),
|
||||
re(`-marm`),
|
||||
re(`-m(no-)?avx[0-9a-z]*`),
|
||||
re(`-mfloat-abi=([^@\-].*)`),
|
||||
re(`-mfpmath=[0-9a-z,+]*`),
|
||||
re(`-m(no-)?avx[0-9a-z.]*`),
|
||||
re(`-m(no-)?ms-bitfields`),
|
||||
re(`-m(no-)?stack-(.+)`),
|
||||
re(`-mmacosx-(.+)`),
|
||||
re(`-mios-simulator-version-min=(.+)`),
|
||||
re(`-miphoneos-version-min=(.+)`),
|
||||
re(`-mtvos-simulator-version-min=(.+)`),
|
||||
re(`-mtvos-version-min=(.+)`),
|
||||
re(`-mwatchos-simulator-version-min=(.+)`),
|
||||
re(`-mwatchos-version-min=(.+)`),
|
||||
re(`-mnop-fun-dllimport`),
|
||||
re(`-m(no-)?sse[0-9.]*`),
|
||||
re(`-m(no-)?ssse3`),
|
||||
re(`-mthumb(-interwork)?`),
|
||||
re(`-mthreads`),
|
||||
re(`-mwindows`),
|
||||
re(`--param=ssp-buffer-size=[0-9]*`),
|
||||
re(`-pedantic(-errors)?`),
|
||||
re(`-pipe`),
|
||||
re(`-pthread`),
|
||||
re(`-?-std=([^@\-].*)`),
|
||||
re(`-?-stdlib=([^@\-].*)`),
|
||||
re(`--sysroot=([^@\-].*)`),
|
||||
re(`-w`),
|
||||
re(`-x([^@\-].*)`),
|
||||
re(`-v`),
|
||||
}
|
||||
|
||||
var validCompilerFlagsWithNextArg = []string{
|
||||
"-arch",
|
||||
"-D",
|
||||
"-I",
|
||||
"-framework",
|
||||
"-isysroot",
|
||||
"-isystem",
|
||||
"--sysroot",
|
||||
"-target",
|
||||
"-x",
|
||||
}
|
||||
|
||||
var validLinkerFlags = []*regexp.Regexp{
|
||||
re(`-F([^@\-].*)`),
|
||||
re(`-l([^@\-].*)`),
|
||||
re(`-L([^@\-].*)`),
|
||||
re(`-O`),
|
||||
re(`-O([^@\-].*)`),
|
||||
re(`-f(no-)?(pic|PIC|pie|PIE)`),
|
||||
re(`-f(no-)?openmp(-simd)?`),
|
||||
re(`-fsanitize=([^@\-].*)`),
|
||||
re(`-flat_namespace`),
|
||||
re(`-g([^@\-].*)?`),
|
||||
re(`-headerpad_max_install_names`),
|
||||
re(`-m(abi|arch|cpu|fpu|tune)=([^@\-].*)`),
|
||||
re(`-mfloat-abi=([^@\-].*)`),
|
||||
re(`-mmacosx-(.+)`),
|
||||
re(`-mios-simulator-version-min=(.+)`),
|
||||
re(`-miphoneos-version-min=(.+)`),
|
||||
re(`-mthreads`),
|
||||
re(`-mwindows`),
|
||||
re(`-(pic|PIC|pie|PIE)`),
|
||||
re(`-pthread`),
|
||||
re(`-rdynamic`),
|
||||
re(`-shared`),
|
||||
re(`-?-static([-a-z0-9+]*)`),
|
||||
re(`-?-stdlib=([^@\-].*)`),
|
||||
re(`-v`),
|
||||
|
||||
// Note that any wildcards in -Wl need to exclude comma,
|
||||
// since -Wl splits its argument at commas and passes
|
||||
// them all to the linker uninterpreted. Allowing comma
|
||||
// in a wildcard would allow tunnelling arbitrary additional
|
||||
// linker arguments through one of these.
|
||||
re(`-Wl,--(no-)?allow-multiple-definition`),
|
||||
re(`-Wl,--(no-)?allow-shlib-undefined`),
|
||||
re(`-Wl,--(no-)?as-needed`),
|
||||
re(`-Wl,-Bdynamic`),
|
||||
re(`-Wl,-berok`),
|
||||
re(`-Wl,-Bstatic`),
|
||||
re(`-WL,-O([^@,\-][^,]*)?`),
|
||||
re(`-Wl,-d[ny]`),
|
||||
re(`-Wl,--disable-new-dtags`),
|
||||
re(`-Wl,-e[=,][a-zA-Z0-9]*`),
|
||||
re(`-Wl,--enable-new-dtags`),
|
||||
re(`-Wl,--end-group`),
|
||||
re(`-Wl,--(no-)?export-dynamic`),
|
||||
re(`-Wl,-framework,[^,@\-][^,]+`),
|
||||
re(`-Wl,-headerpad_max_install_names`),
|
||||
re(`-Wl,--no-undefined`),
|
||||
re(`-Wl,-R([^@\-][^,@]*$)`),
|
||||
re(`-Wl,--just-symbols[=,]([^,@\-][^,@]+)`),
|
||||
re(`-Wl,-rpath(-link)?[=,]([^,@\-][^,]+)`),
|
||||
re(`-Wl,-s`),
|
||||
re(`-Wl,-search_paths_first`),
|
||||
re(`-Wl,-sectcreate,([^,@\-][^,]+),([^,@\-][^,]+),([^,@\-][^,]+)`),
|
||||
re(`-Wl,--start-group`),
|
||||
re(`-Wl,-?-static`),
|
||||
re(`-Wl,-?-subsystem,(native|windows|console|posix|xbox)`),
|
||||
re(`-Wl,-syslibroot[=,]([^,@\-][^,]+)`),
|
||||
re(`-Wl,-undefined[=,]([^,@\-][^,]+)`),
|
||||
re(`-Wl,-?-unresolved-symbols=[^,]+`),
|
||||
re(`-Wl,--(no-)?warn-([^,]+)`),
|
||||
re(`-Wl,-z,(no)?execstack`),
|
||||
re(`-Wl,-z,relro`),
|
||||
|
||||
re(`[a-zA-Z0-9_/].*\.(a|o|obj|dll|dylib|so)`), // direct linker inputs: x.o or libfoo.so (but not -foo.o or @foo.o)
|
||||
re(`\./.*\.(a|o|obj|dll|dylib|so)`),
|
||||
}
|
||||
|
||||
var validLinkerFlagsWithNextArg = []string{
|
||||
"-arch",
|
||||
"-F",
|
||||
"-l",
|
||||
"-L",
|
||||
"-framework",
|
||||
"-isysroot",
|
||||
"--sysroot",
|
||||
"-target",
|
||||
"-Wl,-framework",
|
||||
"-Wl,-rpath",
|
||||
"-Wl,-R",
|
||||
"-Wl,--just-symbols",
|
||||
"-Wl,-undefined",
|
||||
}
|
||||
|
||||
func checkCompilerFlags(name string, list []string) error {
|
||||
return checkFlags(name, list, validCompilerFlags, validCompilerFlagsWithNextArg)
|
||||
}
|
||||
|
||||
func checkLinkerFlags(name string, list []string) error {
|
||||
return checkFlags(name, list, validLinkerFlags, validLinkerFlagsWithNextArg)
|
||||
}
|
||||
|
||||
func checkFlags(name string, list []string, valid []*regexp.Regexp, validNext []string) error {
|
||||
// Let users override rules with $CGO_CFLAGS_ALLOW, $CGO_CFLAGS_DISALLOW, etc.
|
||||
var (
|
||||
allow *regexp.Regexp
|
||||
disallow *regexp.Regexp
|
||||
)
|
||||
if env := os.Getenv("CGO_" + name + "_ALLOW"); env != "" {
|
||||
r, err := regexp.Compile(env)
|
||||
if err != nil {
|
||||
return fmt.Errorf("parsing $CGO_%s_ALLOW: %v", name, err)
|
||||
}
|
||||
allow = r
|
||||
}
|
||||
if env := os.Getenv("CGO_" + name + "_DISALLOW"); env != "" {
|
||||
r, err := regexp.Compile(env)
|
||||
if err != nil {
|
||||
return fmt.Errorf("parsing $CGO_%s_DISALLOW: %v", name, err)
|
||||
}
|
||||
disallow = r
|
||||
}
|
||||
|
||||
Args:
|
||||
for i := 0; i < len(list); i++ {
|
||||
arg := list[i]
|
||||
if disallow != nil && disallow.FindString(arg) == arg {
|
||||
goto Bad
|
||||
}
|
||||
if allow != nil && allow.FindString(arg) == arg {
|
||||
continue Args
|
||||
}
|
||||
for _, re := range valid {
|
||||
if re.FindString(arg) == arg { // must be complete match
|
||||
continue Args
|
||||
}
|
||||
}
|
||||
for _, x := range validNext {
|
||||
if arg == x {
|
||||
if i+1 < len(list) && safeArg(list[i+1]) {
|
||||
i++
|
||||
continue Args
|
||||
}
|
||||
|
||||
// Permit -Wl,-framework -Wl,name.
|
||||
if i+1 < len(list) &&
|
||||
strings.HasPrefix(arg, "-Wl,") &&
|
||||
strings.HasPrefix(list[i+1], "-Wl,") &&
|
||||
safeArg(list[i+1][4:]) &&
|
||||
!strings.Contains(list[i+1][4:], ",") {
|
||||
i++
|
||||
continue Args
|
||||
}
|
||||
|
||||
if i+1 < len(list) {
|
||||
return fmt.Errorf("invalid flag: %s %s (see https://golang.org/s/invalidflag)", arg, list[i+1])
|
||||
}
|
||||
return fmt.Errorf("invalid flag: %s without argument (see https://golang.org/s/invalidflag)", arg)
|
||||
}
|
||||
}
|
||||
Bad:
|
||||
return fmt.Errorf("invalid flag: %s", arg)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func safeArg(name string) bool {
|
||||
if name == "" {
|
||||
return false
|
||||
}
|
||||
c := name[0]
|
||||
return '0' <= c && c <= '9' || 'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z' || c == '.' || c == '_' || c == '/' || c >= utf8.RuneSelf
|
||||
}
|
||||
@@ -1,260 +0,0 @@
|
||||
// Copyright 2018 The Go Authors. All rights reserved.
|
||||
// Use of this source code is governed by a BSD-style
|
||||
// license that can be found in the LICENSE file.
|
||||
|
||||
// This file has been copied from the Go 1.13 release tree.
|
||||
|
||||
package cgo
|
||||
|
||||
import (
|
||||
"os"
|
||||
"testing"
|
||||
)
|
||||
|
||||
var goodCompilerFlags = [][]string{
|
||||
{"-DFOO"},
|
||||
{"-Dfoo=bar"},
|
||||
{"-F/Qt"},
|
||||
{"-I/"},
|
||||
{"-I/etc/passwd"},
|
||||
{"-I."},
|
||||
{"-O"},
|
||||
{"-O2"},
|
||||
{"-Osmall"},
|
||||
{"-W"},
|
||||
{"-Wall"},
|
||||
{"-fobjc-arc"},
|
||||
{"-fno-objc-arc"},
|
||||
{"-fomit-frame-pointer"},
|
||||
{"-fno-omit-frame-pointer"},
|
||||
{"-fpic"},
|
||||
{"-fno-pic"},
|
||||
{"-fPIC"},
|
||||
{"-fno-PIC"},
|
||||
{"-fpie"},
|
||||
{"-fno-pie"},
|
||||
{"-fPIE"},
|
||||
{"-fno-PIE"},
|
||||
{"-fsplit-stack"},
|
||||
{"-fno-split-stack"},
|
||||
{"-fstack-xxx"},
|
||||
{"-fno-stack-xxx"},
|
||||
{"-fsanitize=hands"},
|
||||
{"-g"},
|
||||
{"-ggdb"},
|
||||
{"-march=souza"},
|
||||
{"-mcpu=123"},
|
||||
{"-mfpu=123"},
|
||||
{"-mtune=happybirthday"},
|
||||
{"-mstack-overflow"},
|
||||
{"-mno-stack-overflow"},
|
||||
{"-mmacosx-version"},
|
||||
{"-mnop-fun-dllimport"},
|
||||
{"-pthread"},
|
||||
{"-std=c99"},
|
||||
{"-xc"},
|
||||
{"-D", "FOO"},
|
||||
{"-D", "foo=bar"},
|
||||
{"-I", "."},
|
||||
{"-I", "/etc/passwd"},
|
||||
{"-I", "世界"},
|
||||
{"-framework", "Chocolate"},
|
||||
{"-x", "c"},
|
||||
{"-v"},
|
||||
}
|
||||
|
||||
var badCompilerFlags = [][]string{
|
||||
{"-D@X"},
|
||||
{"-D-X"},
|
||||
{"-F@dir"},
|
||||
{"-F-dir"},
|
||||
{"-I@dir"},
|
||||
{"-I-dir"},
|
||||
{"-O@1"},
|
||||
{"-Wa,-foo"},
|
||||
{"-W@foo"},
|
||||
{"-g@gdb"},
|
||||
{"-g-gdb"},
|
||||
{"-march=@dawn"},
|
||||
{"-march=-dawn"},
|
||||
{"-std=@c99"},
|
||||
{"-std=-c99"},
|
||||
{"-x@c"},
|
||||
{"-x-c"},
|
||||
{"-D", "@foo"},
|
||||
{"-D", "-foo"},
|
||||
{"-I", "@foo"},
|
||||
{"-I", "-foo"},
|
||||
{"-framework", "-Caffeine"},
|
||||
{"-framework", "@Home"},
|
||||
{"-x", "--c"},
|
||||
{"-x", "@obj"},
|
||||
}
|
||||
|
||||
func TestCheckCompilerFlags(t *testing.T) {
|
||||
for _, f := range goodCompilerFlags {
|
||||
if err := checkCompilerFlags("test", f); err != nil {
|
||||
t.Errorf("unexpected error for %q: %v", f, err)
|
||||
}
|
||||
}
|
||||
for _, f := range badCompilerFlags {
|
||||
if err := checkCompilerFlags("test", f); err == nil {
|
||||
t.Errorf("missing error for %q", f)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
var goodLinkerFlags = [][]string{
|
||||
{"-Fbar"},
|
||||
{"-lbar"},
|
||||
{"-Lbar"},
|
||||
{"-fpic"},
|
||||
{"-fno-pic"},
|
||||
{"-fPIC"},
|
||||
{"-fno-PIC"},
|
||||
{"-fpie"},
|
||||
{"-fno-pie"},
|
||||
{"-fPIE"},
|
||||
{"-fno-PIE"},
|
||||
{"-fsanitize=hands"},
|
||||
{"-g"},
|
||||
{"-ggdb"},
|
||||
{"-march=souza"},
|
||||
{"-mcpu=123"},
|
||||
{"-mfpu=123"},
|
||||
{"-mtune=happybirthday"},
|
||||
{"-pic"},
|
||||
{"-pthread"},
|
||||
{"-Wl,-rpath,foo"},
|
||||
{"-Wl,-rpath,$ORIGIN/foo"},
|
||||
{"-Wl,-R", "/foo"},
|
||||
{"-Wl,-R", "foo"},
|
||||
{"-Wl,-R,foo"},
|
||||
{"-Wl,--just-symbols=foo"},
|
||||
{"-Wl,--just-symbols,foo"},
|
||||
{"-Wl,--warn-error"},
|
||||
{"-Wl,--no-warn-error"},
|
||||
{"foo.so"},
|
||||
{"_世界.dll"},
|
||||
{"./x.o"},
|
||||
{"libcgosotest.dylib"},
|
||||
{"-F", "framework"},
|
||||
{"-l", "."},
|
||||
{"-l", "/etc/passwd"},
|
||||
{"-l", "世界"},
|
||||
{"-L", "framework"},
|
||||
{"-framework", "Chocolate"},
|
||||
{"-v"},
|
||||
{"-Wl,-framework", "-Wl,Chocolate"},
|
||||
{"-Wl,-framework,Chocolate"},
|
||||
{"-Wl,-unresolved-symbols=ignore-all"},
|
||||
}
|
||||
|
||||
var badLinkerFlags = [][]string{
|
||||
{"-DFOO"},
|
||||
{"-Dfoo=bar"},
|
||||
{"-W"},
|
||||
{"-Wall"},
|
||||
{"-fobjc-arc"},
|
||||
{"-fno-objc-arc"},
|
||||
{"-fomit-frame-pointer"},
|
||||
{"-fno-omit-frame-pointer"},
|
||||
{"-fsplit-stack"},
|
||||
{"-fno-split-stack"},
|
||||
{"-fstack-xxx"},
|
||||
{"-fno-stack-xxx"},
|
||||
{"-mstack-overflow"},
|
||||
{"-mno-stack-overflow"},
|
||||
{"-mnop-fun-dllimport"},
|
||||
{"-std=c99"},
|
||||
{"-xc"},
|
||||
{"-D", "FOO"},
|
||||
{"-D", "foo=bar"},
|
||||
{"-I", "FOO"},
|
||||
{"-L", "@foo"},
|
||||
{"-L", "-foo"},
|
||||
{"-x", "c"},
|
||||
{"-D@X"},
|
||||
{"-D-X"},
|
||||
{"-I@dir"},
|
||||
{"-I-dir"},
|
||||
{"-O@1"},
|
||||
{"-Wa,-foo"},
|
||||
{"-W@foo"},
|
||||
{"-g@gdb"},
|
||||
{"-g-gdb"},
|
||||
{"-march=@dawn"},
|
||||
{"-march=-dawn"},
|
||||
{"-std=@c99"},
|
||||
{"-std=-c99"},
|
||||
{"-x@c"},
|
||||
{"-x-c"},
|
||||
{"-D", "@foo"},
|
||||
{"-D", "-foo"},
|
||||
{"-I", "@foo"},
|
||||
{"-I", "-foo"},
|
||||
{"-l", "@foo"},
|
||||
{"-l", "-foo"},
|
||||
{"-framework", "-Caffeine"},
|
||||
{"-framework", "@Home"},
|
||||
{"-Wl,-framework,-Caffeine"},
|
||||
{"-Wl,-framework", "-Wl,@Home"},
|
||||
{"-Wl,-framework", "@Home"},
|
||||
{"-Wl,-framework,Chocolate,@Home"},
|
||||
{"-x", "--c"},
|
||||
{"-x", "@obj"},
|
||||
{"-Wl,-rpath,@foo"},
|
||||
{"-Wl,-R,foo,bar"},
|
||||
{"-Wl,-R,@foo"},
|
||||
{"-Wl,--just-symbols,@foo"},
|
||||
{"../x.o"},
|
||||
}
|
||||
|
||||
func TestCheckLinkerFlags(t *testing.T) {
|
||||
for _, f := range goodLinkerFlags {
|
||||
if err := checkLinkerFlags("test", f); err != nil {
|
||||
t.Errorf("unexpected error for %q: %v", f, err)
|
||||
}
|
||||
}
|
||||
for _, f := range badLinkerFlags {
|
||||
if err := checkLinkerFlags("test", f); err == nil {
|
||||
t.Errorf("missing error for %q", f)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestCheckFlagAllowDisallow(t *testing.T) {
|
||||
if err := checkCompilerFlags("TEST", []string{"-disallow"}); err == nil {
|
||||
t.Fatalf("missing error for -disallow")
|
||||
}
|
||||
os.Setenv("CGO_TEST_ALLOW", "-disallo")
|
||||
if err := checkCompilerFlags("TEST", []string{"-disallow"}); err == nil {
|
||||
t.Fatalf("missing error for -disallow with CGO_TEST_ALLOW=-disallo")
|
||||
}
|
||||
os.Setenv("CGO_TEST_ALLOW", "-disallow")
|
||||
if err := checkCompilerFlags("TEST", []string{"-disallow"}); err != nil {
|
||||
t.Fatalf("unexpected error for -disallow with CGO_TEST_ALLOW=-disallow: %v", err)
|
||||
}
|
||||
os.Unsetenv("CGO_TEST_ALLOW")
|
||||
|
||||
if err := checkCompilerFlags("TEST", []string{"-Wall"}); err != nil {
|
||||
t.Fatalf("unexpected error for -Wall: %v", err)
|
||||
}
|
||||
os.Setenv("CGO_TEST_DISALLOW", "-Wall")
|
||||
if err := checkCompilerFlags("TEST", []string{"-Wall"}); err == nil {
|
||||
t.Fatalf("missing error for -Wall with CGO_TEST_DISALLOW=-Wall")
|
||||
}
|
||||
os.Setenv("CGO_TEST_ALLOW", "-Wall") // disallow wins
|
||||
if err := checkCompilerFlags("TEST", []string{"-Wall"}); err == nil {
|
||||
t.Fatalf("missing error for -Wall with CGO_TEST_DISALLOW=-Wall and CGO_TEST_ALLOW=-Wall")
|
||||
}
|
||||
|
||||
os.Setenv("CGO_TEST_ALLOW", "-fplugin.*")
|
||||
os.Setenv("CGO_TEST_DISALLOW", "-fplugin=lint.so")
|
||||
if err := checkCompilerFlags("TEST", []string{"-fplugin=faster.so"}); err != nil {
|
||||
t.Fatalf("unexpected error for -fplugin=faster.so: %v", err)
|
||||
}
|
||||
if err := checkCompilerFlags("TEST", []string{"-fplugin=lint.so"}); err == nil {
|
||||
t.Fatalf("missing error for -fplugin=lint.so: %v", err)
|
||||
}
|
||||
}
|
||||
-46
@@ -1,46 +0,0 @@
|
||||
package cgo
|
||||
|
||||
import (
|
||||
"sync"
|
||||
"unsafe"
|
||||
)
|
||||
|
||||
// #include <stdlib.h>
|
||||
import "C"
|
||||
|
||||
// refMap is a convenient way to store opaque references that can be passed to
|
||||
// C. It is useful if an API uses function pointers and you cannot pass a Go
|
||||
// pointer but only a C pointer.
|
||||
type refMap struct {
|
||||
refs map[unsafe.Pointer]interface{}
|
||||
lock sync.Mutex
|
||||
}
|
||||
|
||||
// Put stores a value in the map. It can later be retrieved using Get. It must
|
||||
// be removed using Remove to avoid memory leaks.
|
||||
func (m *refMap) Put(v interface{}) unsafe.Pointer {
|
||||
m.lock.Lock()
|
||||
defer m.lock.Unlock()
|
||||
if m.refs == nil {
|
||||
m.refs = make(map[unsafe.Pointer]interface{}, 1)
|
||||
}
|
||||
ref := C.malloc(1)
|
||||
m.refs[ref] = v
|
||||
return ref
|
||||
}
|
||||
|
||||
// Get returns a stored value previously inserted with Put. Use the same
|
||||
// reference as you got from Put.
|
||||
func (m *refMap) Get(ref unsafe.Pointer) interface{} {
|
||||
m.lock.Lock()
|
||||
defer m.lock.Unlock()
|
||||
return m.refs[ref]
|
||||
}
|
||||
|
||||
// Remove deletes a single reference from the map.
|
||||
func (m *refMap) Remove(ref unsafe.Pointer) {
|
||||
m.lock.Lock()
|
||||
defer m.lock.Unlock()
|
||||
delete(m.refs, ref)
|
||||
C.free(ref)
|
||||
}
|
||||
Vendored
-3
@@ -1,3 +0,0 @@
|
||||
package main
|
||||
|
||||
import "C"
|
||||
Vendored
-26
@@ -1,26 +0,0 @@
|
||||
package main
|
||||
|
||||
import "unsafe"
|
||||
|
||||
var _ unsafe.Pointer
|
||||
|
||||
type C.int16_t = int16
|
||||
type C.int32_t = int32
|
||||
type C.int64_t = int64
|
||||
type C.int8_t = int8
|
||||
type C.uint16_t = uint16
|
||||
type C.uint32_t = uint32
|
||||
type C.uint64_t = uint64
|
||||
type C.uint8_t = uint8
|
||||
type C.uintptr_t = uintptr
|
||||
type C.char uint8
|
||||
type C.int int32
|
||||
type C.long int32
|
||||
type C.longlong int64
|
||||
type C.schar int8
|
||||
type C.short int16
|
||||
type C.uchar uint8
|
||||
type C.uint uint32
|
||||
type C.ulong uint32
|
||||
type C.ulonglong uint64
|
||||
type C.ushort uint16
|
||||
Vendored
-33
@@ -1,33 +0,0 @@
|
||||
package main
|
||||
|
||||
/*
|
||||
#warning some warning
|
||||
|
||||
typedef struct {
|
||||
int x;
|
||||
int y;
|
||||
} point_t;
|
||||
|
||||
typedef someType noType; // undefined type
|
||||
|
||||
#define SOME_CONST_1 5) // invalid const syntax
|
||||
#define SOME_CONST_2 6) // const not used (so no error)
|
||||
#define SOME_CONST_3 1234 // const too large for byte
|
||||
*/
|
||||
import "C"
|
||||
|
||||
// Make sure that errors for the following lines won't change with future
|
||||
// additions to the CGo preamble.
|
||||
//line errors.go:100
|
||||
var (
|
||||
// constant too large
|
||||
_ C.uint8_t = 2 << 10
|
||||
|
||||
// z member does not exist
|
||||
_ C.point_t = C.point_t{z: 3}
|
||||
|
||||
// constant has syntax error
|
||||
_ = C.SOME_CONST_1
|
||||
|
||||
_ byte = C.SOME_CONST_3
|
||||
)
|
||||
Vendored
-43
@@ -1,43 +0,0 @@
|
||||
// CGo errors:
|
||||
// testdata/errors.go:4:2: warning: some warning
|
||||
// testdata/errors.go:11:9: error: unknown type name 'someType'
|
||||
// testdata/errors.go:13:23: unexpected token )
|
||||
|
||||
// Type checking errors after CGo processing:
|
||||
// testdata/errors.go:102: 2 << 10 (untyped int constant 2048) overflows uint8
|
||||
// testdata/errors.go:105: unknown field z in struct literal
|
||||
// testdata/errors.go:108: undeclared name: C.SOME_CONST_1
|
||||
// testdata/errors.go:110: C.SOME_CONST_3 (untyped int constant 1234) overflows byte
|
||||
|
||||
package main
|
||||
|
||||
import "unsafe"
|
||||
|
||||
var _ unsafe.Pointer
|
||||
|
||||
const C.SOME_CONST_3 = 1234
|
||||
|
||||
type C.int16_t = int16
|
||||
type C.int32_t = int32
|
||||
type C.int64_t = int64
|
||||
type C.int8_t = int8
|
||||
type C.uint16_t = uint16
|
||||
type C.uint32_t = uint32
|
||||
type C.uint64_t = uint64
|
||||
type C.uint8_t = uint8
|
||||
type C.uintptr_t = uintptr
|
||||
type C.char uint8
|
||||
type C.int int32
|
||||
type C.long int32
|
||||
type C.longlong int64
|
||||
type C.schar int8
|
||||
type C.short int16
|
||||
type C.uchar uint8
|
||||
type C.uint uint32
|
||||
type C.ulong uint32
|
||||
type C.ulonglong uint64
|
||||
type C.ushort uint16
|
||||
type C.point_t = struct {
|
||||
x C.int
|
||||
y C.int
|
||||
}
|
||||
Vendored
-26
@@ -1,26 +0,0 @@
|
||||
package main
|
||||
|
||||
/*
|
||||
// this name doesn't exist
|
||||
#cgo NOFLAGS: -foo
|
||||
|
||||
// unknown flag
|
||||
#cgo CFLAGS: -fdoes-not-exist -DNOTDEFINED
|
||||
|
||||
#cgo CFLAGS: -DFOO
|
||||
|
||||
#if defined(FOO)
|
||||
#define BAR 3
|
||||
#else
|
||||
#define BAR 5
|
||||
#endif
|
||||
|
||||
#if defined(NOTDEFINED)
|
||||
#warning flag must not be defined
|
||||
#endif
|
||||
*/
|
||||
import "C"
|
||||
|
||||
var (
|
||||
_ = C.BAR
|
||||
)
|
||||
Vendored
-32
@@ -1,32 +0,0 @@
|
||||
// CGo errors:
|
||||
// testdata/flags.go:5:7: invalid #cgo line: NOFLAGS
|
||||
// testdata/flags.go:8:13: invalid flag: -fdoes-not-exist
|
||||
|
||||
package main
|
||||
|
||||
import "unsafe"
|
||||
|
||||
var _ unsafe.Pointer
|
||||
|
||||
const C.BAR = 3
|
||||
|
||||
type C.int16_t = int16
|
||||
type C.int32_t = int32
|
||||
type C.int64_t = int64
|
||||
type C.int8_t = int8
|
||||
type C.uint16_t = uint16
|
||||
type C.uint32_t = uint32
|
||||
type C.uint64_t = uint64
|
||||
type C.uint8_t = uint8
|
||||
type C.uintptr_t = uintptr
|
||||
type C.char uint8
|
||||
type C.int int32
|
||||
type C.long int32
|
||||
type C.longlong int64
|
||||
type C.schar int8
|
||||
type C.short int16
|
||||
type C.uchar uint8
|
||||
type C.uint uint32
|
||||
type C.ulong uint32
|
||||
type C.ulonglong uint64
|
||||
type C.ushort uint16
|
||||
Vendored
-165
@@ -1,165 +0,0 @@
|
||||
package main
|
||||
|
||||
/*
|
||||
// Simple typedef.
|
||||
typedef int myint;
|
||||
|
||||
// Structs, with or without name.
|
||||
typedef struct {
|
||||
int x;
|
||||
int y;
|
||||
} point2d_t;
|
||||
typedef struct point3d {
|
||||
int x;
|
||||
int y;
|
||||
int z;
|
||||
} point3d_t;
|
||||
|
||||
// Structs with reserved field names.
|
||||
struct type1 {
|
||||
// All these fields should be renamed.
|
||||
int type;
|
||||
int _type;
|
||||
int __type;
|
||||
};
|
||||
struct type2 {
|
||||
// This field should not be renamed.
|
||||
int _type;
|
||||
};
|
||||
|
||||
// Unions.
|
||||
typedef union {
|
||||
// Union should be treated as a struct.
|
||||
int i;
|
||||
} union1_t;
|
||||
typedef union {
|
||||
// Union must contain a single field and have special getters/setters.
|
||||
int i;
|
||||
double d;
|
||||
short s;
|
||||
} union3_t;
|
||||
typedef union union2d {
|
||||
int i;
|
||||
double d[2];
|
||||
} union2d_t;
|
||||
typedef union {
|
||||
unsigned char arr[10];
|
||||
} unionarray_t;
|
||||
|
||||
// Nested structs and unions.
|
||||
typedef struct {
|
||||
point2d_t begin;
|
||||
point2d_t end;
|
||||
int tag;
|
||||
union {
|
||||
point2d_t area;
|
||||
point3d_t solid;
|
||||
} coord;
|
||||
} struct_nested_t;
|
||||
typedef union {
|
||||
point3d_t point;
|
||||
unionarray_t array;
|
||||
union3_t thing;
|
||||
} union_nested_t;
|
||||
|
||||
// Enums. These define constant numbers. All these constants must be given the
|
||||
// correct number.
|
||||
typedef enum option {
|
||||
optionA,
|
||||
optionB,
|
||||
optionC = -5,
|
||||
optionD,
|
||||
optionE = 10,
|
||||
optionF,
|
||||
optionG,
|
||||
} option_t;
|
||||
enum unused {
|
||||
unused1 = 5,
|
||||
};
|
||||
|
||||
// Anonymous enum.
|
||||
typedef enum {
|
||||
option2A = 20,
|
||||
} option2_t;
|
||||
|
||||
// Various types that are usually translated directly to Go types, but storing
|
||||
// them in a struct reveals them.
|
||||
typedef struct {
|
||||
float f;
|
||||
double d;
|
||||
int *ptr;
|
||||
} types_t;
|
||||
|
||||
// Arrays.
|
||||
typedef int myIntArray[10];
|
||||
|
||||
// Bitfields.
|
||||
typedef struct {
|
||||
unsigned char start;
|
||||
unsigned char a : 5;
|
||||
unsigned char b : 1;
|
||||
unsigned char c : 2;
|
||||
unsigned char :0; // new field
|
||||
unsigned char d : 6;
|
||||
unsigned char e : 3;
|
||||
// Note that C++ allows bitfields bigger than the underlying type.
|
||||
} bitfield_t;
|
||||
*/
|
||||
import "C"
|
||||
|
||||
var (
|
||||
// Simple typedefs.
|
||||
_ C.myint
|
||||
|
||||
// Structs.
|
||||
_ C.point2d_t
|
||||
_ C.point3d_t
|
||||
_ C.struct_point3d
|
||||
|
||||
// Structs with reserved field names.
|
||||
_ C.struct_type1
|
||||
_ C.struct_type2
|
||||
|
||||
// Unions.
|
||||
_ C.union1_t
|
||||
_ C.union3_t
|
||||
_ C.union2d_t
|
||||
_ C.unionarray_t
|
||||
|
||||
// Nested structs and unions.
|
||||
_ C.struct_nested_t
|
||||
_ C.union_nested_t
|
||||
|
||||
// Enums (anonymous and named).
|
||||
_ C.option_t
|
||||
_ C.enum_option
|
||||
_ C.option2_t
|
||||
|
||||
// Various types.
|
||||
_ C.types_t
|
||||
|
||||
// Arrays.
|
||||
_ C.myIntArray
|
||||
)
|
||||
|
||||
// Test bitfield accesses.
|
||||
func accessBitfields() {
|
||||
var x C.bitfield_t
|
||||
x.start = 3
|
||||
x.set_bitfield_a(4)
|
||||
x.set_bitfield_b(1)
|
||||
x.set_bitfield_c(2)
|
||||
x.d = 10
|
||||
x.e = 5
|
||||
var _ C.uchar = x.bitfield_a()
|
||||
}
|
||||
|
||||
// Test union accesses.
|
||||
func accessUnion() {
|
||||
var union1 C.union1_t
|
||||
union1.i = 5
|
||||
|
||||
var union2d C.union2d_t
|
||||
var _ *C.int = union2d.unionfield_i()
|
||||
var _ *[2]float64 = union2d.unionfield_d()
|
||||
}
|
||||
Vendored
-119
@@ -1,119 +0,0 @@
|
||||
package main
|
||||
|
||||
import "unsafe"
|
||||
|
||||
var _ unsafe.Pointer
|
||||
|
||||
const C.option2A = 20
|
||||
const C.optionA = 0
|
||||
const C.optionB = 1
|
||||
const C.optionC = -5
|
||||
const C.optionD = -4
|
||||
const C.optionE = 10
|
||||
const C.optionF = 11
|
||||
const C.optionG = 12
|
||||
const C.unused1 = 5
|
||||
|
||||
type C.int16_t = int16
|
||||
type C.int32_t = int32
|
||||
type C.int64_t = int64
|
||||
type C.int8_t = int8
|
||||
type C.uint16_t = uint16
|
||||
type C.uint32_t = uint32
|
||||
type C.uint64_t = uint64
|
||||
type C.uint8_t = uint8
|
||||
type C.uintptr_t = uintptr
|
||||
type C.char uint8
|
||||
type C.int int32
|
||||
type C.long int32
|
||||
type C.longlong int64
|
||||
type C.schar int8
|
||||
type C.short int16
|
||||
type C.uchar uint8
|
||||
type C.uint uint32
|
||||
type C.ulong uint32
|
||||
type C.ulonglong uint64
|
||||
type C.ushort uint16
|
||||
type C.bitfield_t = C.struct_4
|
||||
type C.myIntArray = [10]C.int
|
||||
type C.myint = C.int
|
||||
type C.option2_t = C.uint
|
||||
type C.option_t = C.enum_option
|
||||
type C.point2d_t = struct {
|
||||
x C.int
|
||||
y C.int
|
||||
}
|
||||
type C.point3d_t = C.struct_point3d
|
||||
type C.struct_nested_t = struct {
|
||||
begin C.point2d_t
|
||||
end C.point2d_t
|
||||
tag C.int
|
||||
|
||||
coord C.union_2
|
||||
}
|
||||
type C.types_t = struct {
|
||||
f float32
|
||||
d float64
|
||||
ptr *C.int
|
||||
}
|
||||
type C.union1_t = struct{ i C.int }
|
||||
type C.union2d_t = C.union_union2d
|
||||
type C.union3_t = C.union_1
|
||||
type C.union_nested_t = C.union_3
|
||||
type C.unionarray_t = struct{ arr [10]C.uchar }
|
||||
|
||||
func (s *C.struct_4) bitfield_a() C.uchar { return s.__bitfield_1 & 0x1f }
|
||||
func (s *C.struct_4) set_bitfield_a(value C.uchar) { s.__bitfield_1 = s.__bitfield_1&^0x1f | value&0x1f<<0 }
|
||||
func (s *C.struct_4) bitfield_b() C.uchar {
|
||||
return s.__bitfield_1 >> 5 & 0x1
|
||||
}
|
||||
func (s *C.struct_4) set_bitfield_b(value C.uchar) { s.__bitfield_1 = s.__bitfield_1&^0x20 | value&0x1<<5 }
|
||||
func (s *C.struct_4) bitfield_c() C.uchar {
|
||||
return s.__bitfield_1 >> 6
|
||||
}
|
||||
func (s *C.struct_4) set_bitfield_c(value C.uchar,
|
||||
|
||||
) { s.__bitfield_1 = s.__bitfield_1&0x3f | value<<6 }
|
||||
|
||||
type C.struct_4 struct {
|
||||
start C.uchar
|
||||
__bitfield_1 C.uchar
|
||||
|
||||
d C.uchar
|
||||
e C.uchar
|
||||
}
|
||||
type C.struct_point3d struct {
|
||||
x C.int
|
||||
y C.int
|
||||
z C.int
|
||||
}
|
||||
type C.struct_type1 struct {
|
||||
_type C.int
|
||||
__type C.int
|
||||
___type C.int
|
||||
}
|
||||
type C.struct_type2 struct{ _type C.int }
|
||||
|
||||
func (union *C.union_1) unionfield_i() *C.int { return (*C.int)(unsafe.Pointer(&union.$union)) }
|
||||
func (union *C.union_1) unionfield_d() *float64 { return (*float64)(unsafe.Pointer(&union.$union)) }
|
||||
func (union *C.union_1) unionfield_s() *C.short { return (*C.short)(unsafe.Pointer(&union.$union)) }
|
||||
|
||||
type C.union_1 struct{ $union uint64 }
|
||||
|
||||
func (union *C.union_2) unionfield_area() *C.point2d_t { return (*C.point2d_t)(unsafe.Pointer(&union.$union)) }
|
||||
func (union *C.union_2) unionfield_solid() *C.point3d_t { return (*C.point3d_t)(unsafe.Pointer(&union.$union)) }
|
||||
|
||||
type C.union_2 struct{ $union [3]uint32 }
|
||||
|
||||
func (union *C.union_3) unionfield_point() *C.point3d_t { return (*C.point3d_t)(unsafe.Pointer(&union.$union)) }
|
||||
func (union *C.union_3) unionfield_array() *C.unionarray_t { return (*C.unionarray_t)(unsafe.Pointer(&union.$union)) }
|
||||
func (union *C.union_3) unionfield_thing() *C.union3_t { return (*C.union3_t)(unsafe.Pointer(&union.$union)) }
|
||||
|
||||
type C.union_3 struct{ $union [2]uint64 }
|
||||
|
||||
func (union *C.union_union2d) unionfield_i() *C.int { return (*C.int)(unsafe.Pointer(&union.$union)) }
|
||||
func (union *C.union_union2d) unionfield_d() *[2]float64 { return (*[2]float64)(unsafe.Pointer(&union.$union)) }
|
||||
|
||||
type C.union_union2d struct{ $union [2]uint64 }
|
||||
type C.enum_option C.int
|
||||
type C.enum_unused C.uint
|
||||
@@ -1,221 +0,0 @@
|
||||
// Package compileopts contains the configuration for a single to-be-built
|
||||
// binary.
|
||||
package compileopts
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"regexp"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"github.com/tinygo-org/tinygo/goenv"
|
||||
)
|
||||
|
||||
// Config keeps all configuration affecting the build in a single struct.
|
||||
type Config struct {
|
||||
Options *Options
|
||||
Target *TargetSpec
|
||||
GoMinorVersion int
|
||||
ClangHeaders string // Clang built-in header include path
|
||||
TestConfig TestConfig
|
||||
}
|
||||
|
||||
// Triple returns the LLVM target triple, like armv6m-none-eabi.
|
||||
func (c *Config) Triple() string {
|
||||
return c.Target.Triple
|
||||
}
|
||||
|
||||
// CPU returns the LLVM CPU name, like atmega328p or arm7tdmi. It may return an
|
||||
// empty string if the CPU name is not known.
|
||||
func (c *Config) CPU() string {
|
||||
return c.Target.CPU
|
||||
}
|
||||
|
||||
// Features returns a list of features this CPU supports. For example, for a
|
||||
// RISC-V processor, that could be ["+a", "+c", "+m"]. For many targets, an
|
||||
// empty list will be returned.
|
||||
func (c *Config) Features() []string {
|
||||
return c.Target.Features
|
||||
}
|
||||
|
||||
// GOOS returns the GOOS of the target. This might not always be the actual OS:
|
||||
// for example, bare-metal targets will usually pretend to be linux to get the
|
||||
// standard library to compile.
|
||||
func (c *Config) GOOS() string {
|
||||
return c.Target.GOOS
|
||||
}
|
||||
|
||||
// GOARCH returns the GOARCH of the target. This might not always be the actual
|
||||
// archtecture: for example, the AVR target is not supported by the Go standard
|
||||
// library so such targets will usually pretend to be linux/arm.
|
||||
func (c *Config) GOARCH() string {
|
||||
return c.Target.GOARCH
|
||||
}
|
||||
|
||||
// BuildTags returns the complete list of build tags used during this build.
|
||||
func (c *Config) BuildTags() []string {
|
||||
tags := append(c.Target.BuildTags, []string{"tinygo", "gc." + c.GC(), "scheduler." + c.Scheduler()}...)
|
||||
for i := 1; i <= c.GoMinorVersion; i++ {
|
||||
tags = append(tags, fmt.Sprintf("go1.%d", i))
|
||||
}
|
||||
if extraTags := strings.Fields(c.Options.Tags); len(extraTags) != 0 {
|
||||
tags = append(tags, extraTags...)
|
||||
}
|
||||
return tags
|
||||
}
|
||||
|
||||
// GC returns the garbage collection strategy in use on this platform. Valid
|
||||
// values are "none", "leaking", and "conservative".
|
||||
func (c *Config) GC() string {
|
||||
if c.Options.GC != "" {
|
||||
return c.Options.GC
|
||||
}
|
||||
if c.Target.GC != "" {
|
||||
return c.Target.GC
|
||||
}
|
||||
return "conservative"
|
||||
}
|
||||
|
||||
// NeedsStackObjects returns true if the compiler should insert stack objects
|
||||
// that can be traced by the garbage collector.
|
||||
func (c *Config) NeedsStackObjects() bool {
|
||||
if c.GC() != "conservative" {
|
||||
return false
|
||||
}
|
||||
for _, tag := range c.BuildTags() {
|
||||
if tag == "baremetal" {
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
// Scheduler returns the scheduler implementation. Valid values are "coroutines"
|
||||
// and "tasks".
|
||||
func (c *Config) Scheduler() string {
|
||||
if c.Options.Scheduler != "" {
|
||||
return c.Options.Scheduler
|
||||
}
|
||||
if c.Target.Scheduler != "" {
|
||||
return c.Target.Scheduler
|
||||
}
|
||||
// Fall back to coroutines, which are supported everywhere.
|
||||
return "coroutines"
|
||||
}
|
||||
|
||||
// PanicStrategy returns the panic strategy selected for this target. Valid
|
||||
// values are "print" (print the panic value, then exit) or "trap" (issue a trap
|
||||
// instruction).
|
||||
func (c *Config) PanicStrategy() string {
|
||||
return c.Options.PanicStrategy
|
||||
}
|
||||
|
||||
// CFlags returns the flags to pass to the C compiler. This is necessary for CGo
|
||||
// preprocessing.
|
||||
func (c *Config) CFlags() []string {
|
||||
cflags := append([]string{}, c.Options.CFlags...)
|
||||
for _, flag := range c.Target.CFlags {
|
||||
cflags = append(cflags, strings.Replace(flag, "{root}", goenv.Get("TINYGOROOT"), -1))
|
||||
}
|
||||
return cflags
|
||||
}
|
||||
|
||||
// LDFlags returns the flags to pass to the linker. A few more flags are needed
|
||||
// (like the one for the compiler runtime), but this represents the majority of
|
||||
// the flags.
|
||||
func (c *Config) LDFlags() []string {
|
||||
root := goenv.Get("TINYGOROOT")
|
||||
// Merge and adjust LDFlags.
|
||||
ldflags := append([]string{}, c.Options.LDFlags...)
|
||||
for _, flag := range c.Target.LDFlags {
|
||||
ldflags = append(ldflags, strings.Replace(flag, "{root}", root, -1))
|
||||
}
|
||||
ldflags = append(ldflags, "-L", root)
|
||||
if c.Target.GOARCH == "wasm" {
|
||||
// Round heap size to next multiple of 65536 (the WebAssembly page
|
||||
// size).
|
||||
heapSize := (c.Options.HeapSize + (65536 - 1)) &^ (65536 - 1)
|
||||
ldflags = append(ldflags, "--initial-memory="+strconv.FormatInt(heapSize, 10))
|
||||
}
|
||||
if c.Target.LinkerScript != "" {
|
||||
ldflags = append(ldflags, "-T", c.Target.LinkerScript)
|
||||
}
|
||||
return ldflags
|
||||
}
|
||||
|
||||
// ExtraFiles returns the list of extra files to be built and linked with the
|
||||
// executable. This can include extra C and assembly files.
|
||||
func (c *Config) ExtraFiles() []string {
|
||||
return c.Target.ExtraFiles
|
||||
}
|
||||
|
||||
// DumpSSA returns whether to dump Go SSA while compiling (-dumpssa flag). Only
|
||||
// enable this for debugging.
|
||||
func (c *Config) DumpSSA() bool {
|
||||
return c.Options.DumpSSA
|
||||
}
|
||||
|
||||
// VerifyIR returns whether to run extra checks on the IR. This is normally
|
||||
// disabled but enabled during testing.
|
||||
func (c *Config) VerifyIR() bool {
|
||||
return c.Options.VerifyIR
|
||||
}
|
||||
|
||||
// Debug returns whether to add debug symbols to the IR, for debugging with GDB
|
||||
// and similar.
|
||||
func (c *Config) Debug() bool {
|
||||
return c.Options.Debug
|
||||
}
|
||||
|
||||
// Programmer returns the flash method and OpenOCD interface name given a
|
||||
// particular configuration. It may either be all configured in the target JSON
|
||||
// file or be modified using the -programmmer command-line option.
|
||||
func (c *Config) Programmer() (method, openocdInterface string) {
|
||||
switch c.Options.Programmer {
|
||||
case "":
|
||||
// No configuration supplied.
|
||||
return c.Target.FlashMethod, c.Target.OpenOCDInterface
|
||||
case "openocd", "msd", "command":
|
||||
// The -programmer flag only specifies the flash method.
|
||||
return c.Options.Programmer, c.Target.OpenOCDInterface
|
||||
default:
|
||||
// The -programmer flag specifies something else, assume it specifies
|
||||
// the OpenOCD interface name.
|
||||
return "openocd", c.Options.Programmer
|
||||
}
|
||||
}
|
||||
|
||||
// OpenOCDConfiguration returns a list of command line arguments to OpenOCD.
|
||||
// This list of command-line arguments is based on the various OpenOCD-related
|
||||
// flags in the target specification.
|
||||
func (c *Config) OpenOCDConfiguration() (args []string, err error) {
|
||||
_, openocdInterface := c.Programmer()
|
||||
if openocdInterface == "" {
|
||||
return nil, errors.New("OpenOCD programmer not set")
|
||||
}
|
||||
if !regexp.MustCompile("^[\\p{L}0-9_-]+$").MatchString(openocdInterface) {
|
||||
return nil, fmt.Errorf("OpenOCD programmer has an invalid name: %#v", openocdInterface)
|
||||
}
|
||||
if c.Target.OpenOCDTarget == "" {
|
||||
return nil, errors.New("OpenOCD chip not set")
|
||||
}
|
||||
if !regexp.MustCompile("^[\\p{L}0-9_-]+$").MatchString(c.Target.OpenOCDTarget) {
|
||||
return nil, fmt.Errorf("OpenOCD target has an invalid name: %#v", c.Target.OpenOCDTarget)
|
||||
}
|
||||
if c.Target.OpenOCDTransport != "" && c.Target.OpenOCDTransport != "swd" {
|
||||
return nil, fmt.Errorf("unknown OpenOCD transport: %#v", c.Target.OpenOCDTransport)
|
||||
}
|
||||
args = []string{"-f", "interface/" + openocdInterface + ".cfg"}
|
||||
if c.Target.OpenOCDTransport != "" {
|
||||
args = append(args, "-c", "transport select "+c.Target.OpenOCDTransport)
|
||||
}
|
||||
args = append(args, "-f", "target/"+c.Target.OpenOCDTarget+".cfg")
|
||||
return args, nil
|
||||
}
|
||||
|
||||
type TestConfig struct {
|
||||
CompileTestBinary bool
|
||||
// TODO: Filter the test functions to run, include verbose flag, etc
|
||||
}
|
||||
@@ -1,23 +0,0 @@
|
||||
package compileopts
|
||||
|
||||
// Options contains extra options to give to the compiler. These options are
|
||||
// usually passed from the command line.
|
||||
type Options struct {
|
||||
Target string
|
||||
Opt string
|
||||
GC string
|
||||
PanicStrategy string
|
||||
Scheduler string
|
||||
PrintIR bool
|
||||
DumpSSA bool
|
||||
VerifyIR bool
|
||||
Debug bool
|
||||
PrintSizes string
|
||||
CFlags []string
|
||||
LDFlags []string
|
||||
Tags string
|
||||
WasmAbi string
|
||||
HeapSize int64
|
||||
TestConfig TestConfig
|
||||
Programmer string
|
||||
}
|
||||
@@ -1,19 +0,0 @@
|
||||
package compileopts
|
||||
|
||||
import "testing"
|
||||
|
||||
func TestLoadTarget(t *testing.T) {
|
||||
_, err := LoadTarget("arduino")
|
||||
if err != nil {
|
||||
t.Error("LoadTarget test failed:", err)
|
||||
}
|
||||
|
||||
_, err = LoadTarget("notexist")
|
||||
if err == nil {
|
||||
t.Error("LoadTarget should have failed with non existing target")
|
||||
}
|
||||
|
||||
if err.Error() != "expected a full LLVM target or a custom target in -target flag" {
|
||||
t.Error("LoadTarget failed for wrong reason:", err)
|
||||
}
|
||||
}
|
||||
@@ -1,166 +0,0 @@
|
||||
package compiler
|
||||
|
||||
// This file implements functions that do certain safety checks that are
|
||||
// required by the Go programming language.
|
||||
|
||||
import (
|
||||
"go/types"
|
||||
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
// emitLookupBoundsCheck emits a bounds check before doing a lookup into a
|
||||
// slice. This is required by the Go language spec: an index out of bounds must
|
||||
// cause a panic.
|
||||
func (c *Compiler) emitLookupBoundsCheck(frame *Frame, arrayLen, index llvm.Value, indexType types.Type) {
|
||||
if frame.fn.IsNoBounds() {
|
||||
// The //go:nobounds pragma was added to the function to avoid bounds
|
||||
// checking.
|
||||
return
|
||||
}
|
||||
|
||||
if index.Type().IntTypeWidth() < arrayLen.Type().IntTypeWidth() {
|
||||
// Sometimes, the index can be e.g. an uint8 or int8, and we have to
|
||||
// correctly extend that type.
|
||||
if indexType.Underlying().(*types.Basic).Info()&types.IsUnsigned == 0 {
|
||||
index = c.builder.CreateZExt(index, arrayLen.Type(), "")
|
||||
} else {
|
||||
index = c.builder.CreateSExt(index, arrayLen.Type(), "")
|
||||
}
|
||||
} else if index.Type().IntTypeWidth() > arrayLen.Type().IntTypeWidth() {
|
||||
// The index is bigger than the array length type, so extend it.
|
||||
arrayLen = c.builder.CreateZExt(arrayLen, index.Type(), "")
|
||||
}
|
||||
|
||||
faultBlock := c.ctx.AddBasicBlock(frame.fn.LLVMFn, "lookup.outofbounds")
|
||||
nextBlock := c.ctx.AddBasicBlock(frame.fn.LLVMFn, "lookup.next")
|
||||
frame.blockExits[frame.currentBlock] = nextBlock // adjust outgoing block for phi nodes
|
||||
|
||||
// Now do the bounds check: index >= arrayLen
|
||||
outOfBounds := c.builder.CreateICmp(llvm.IntUGE, index, arrayLen, "")
|
||||
c.builder.CreateCondBr(outOfBounds, faultBlock, nextBlock)
|
||||
|
||||
// Fail: this is a nil pointer, exit with a panic.
|
||||
c.builder.SetInsertPointAtEnd(faultBlock)
|
||||
c.createRuntimeCall("lookupPanic", nil, "")
|
||||
c.builder.CreateUnreachable()
|
||||
|
||||
// Ok: this is a valid pointer.
|
||||
c.builder.SetInsertPointAtEnd(nextBlock)
|
||||
}
|
||||
|
||||
// emitSliceBoundsCheck emits a bounds check before a slicing operation to make
|
||||
// sure it is within bounds.
|
||||
//
|
||||
// This function is both used for slicing a slice (low and high have their
|
||||
// normal meaning) and for creating a new slice, where 'capacity' means the
|
||||
// biggest possible slice capacity, 'low' means len and 'high' means cap. The
|
||||
// logic is the same in both cases.
|
||||
func (c *Compiler) emitSliceBoundsCheck(frame *Frame, capacity, low, high, max llvm.Value, lowType, highType, maxType *types.Basic) {
|
||||
if frame.fn.IsNoBounds() {
|
||||
// The //go:nobounds pragma was added to the function to avoid bounds
|
||||
// checking.
|
||||
return
|
||||
}
|
||||
|
||||
// Extend the capacity integer to be at least as wide as low and high.
|
||||
capacityType := capacity.Type()
|
||||
if low.Type().IntTypeWidth() > capacityType.IntTypeWidth() {
|
||||
capacityType = low.Type()
|
||||
}
|
||||
if high.Type().IntTypeWidth() > capacityType.IntTypeWidth() {
|
||||
capacityType = high.Type()
|
||||
}
|
||||
if max.Type().IntTypeWidth() > capacityType.IntTypeWidth() {
|
||||
capacityType = max.Type()
|
||||
}
|
||||
if capacityType != capacity.Type() {
|
||||
capacity = c.builder.CreateZExt(capacity, capacityType, "")
|
||||
}
|
||||
|
||||
// Extend low and high to be the same size as capacity.
|
||||
if low.Type().IntTypeWidth() < capacityType.IntTypeWidth() {
|
||||
if lowType.Info()&types.IsUnsigned != 0 {
|
||||
low = c.builder.CreateZExt(low, capacityType, "")
|
||||
} else {
|
||||
low = c.builder.CreateSExt(low, capacityType, "")
|
||||
}
|
||||
}
|
||||
if high.Type().IntTypeWidth() < capacityType.IntTypeWidth() {
|
||||
if highType.Info()&types.IsUnsigned != 0 {
|
||||
high = c.builder.CreateZExt(high, capacityType, "")
|
||||
} else {
|
||||
high = c.builder.CreateSExt(high, capacityType, "")
|
||||
}
|
||||
}
|
||||
if max.Type().IntTypeWidth() < capacityType.IntTypeWidth() {
|
||||
if maxType.Info()&types.IsUnsigned != 0 {
|
||||
max = c.builder.CreateZExt(max, capacityType, "")
|
||||
} else {
|
||||
max = c.builder.CreateSExt(max, capacityType, "")
|
||||
}
|
||||
}
|
||||
|
||||
faultBlock := c.ctx.AddBasicBlock(frame.fn.LLVMFn, "slice.outofbounds")
|
||||
nextBlock := c.ctx.AddBasicBlock(frame.fn.LLVMFn, "slice.next")
|
||||
frame.blockExits[frame.currentBlock] = nextBlock // adjust outgoing block for phi nodes
|
||||
|
||||
// Now do the bounds check: low > high || high > capacity
|
||||
outOfBounds1 := c.builder.CreateICmp(llvm.IntUGT, low, high, "slice.lowhigh")
|
||||
outOfBounds2 := c.builder.CreateICmp(llvm.IntUGT, high, max, "slice.highmax")
|
||||
outOfBounds3 := c.builder.CreateICmp(llvm.IntUGT, max, capacity, "slice.maxcap")
|
||||
outOfBounds := c.builder.CreateOr(outOfBounds1, outOfBounds2, "slice.lowmax")
|
||||
outOfBounds = c.builder.CreateOr(outOfBounds, outOfBounds3, "slice.lowcap")
|
||||
c.builder.CreateCondBr(outOfBounds, faultBlock, nextBlock)
|
||||
|
||||
// Fail: this is a nil pointer, exit with a panic.
|
||||
c.builder.SetInsertPointAtEnd(faultBlock)
|
||||
c.createRuntimeCall("slicePanic", nil, "")
|
||||
c.builder.CreateUnreachable()
|
||||
|
||||
// Ok: this is a valid pointer.
|
||||
c.builder.SetInsertPointAtEnd(nextBlock)
|
||||
}
|
||||
|
||||
// emitNilCheck checks whether the given pointer is nil, and panics if it is. It
|
||||
// has no effect in well-behaved programs, but makes sure no uncaught nil
|
||||
// pointer dereferences exist in valid Go code.
|
||||
func (c *Compiler) emitNilCheck(frame *Frame, ptr llvm.Value, blockPrefix string) {
|
||||
// Check whether we need to emit this check at all.
|
||||
if !ptr.IsAGlobalValue().IsNil() {
|
||||
return
|
||||
}
|
||||
|
||||
// Check whether this is a nil pointer.
|
||||
faultBlock := c.ctx.AddBasicBlock(frame.fn.LLVMFn, blockPrefix+".nil")
|
||||
nextBlock := c.ctx.AddBasicBlock(frame.fn.LLVMFn, blockPrefix+".next")
|
||||
frame.blockExits[frame.currentBlock] = nextBlock // adjust outgoing block for phi nodes
|
||||
|
||||
// Compare against nil.
|
||||
var isnil llvm.Value
|
||||
if ptr.Type().PointerAddressSpace() == 0 {
|
||||
// Do the nil check using the isnil builtin, which marks the parameter
|
||||
// as nocapture.
|
||||
// The reason it has to go through a builtin, is that a regular icmp
|
||||
// instruction may capture the pointer in LLVM semantics, see
|
||||
// https://reviews.llvm.org/D60047 for details. Pointer capturing
|
||||
// unfortunately breaks escape analysis, so we use this trick to let the
|
||||
// functionattr pass know that this pointer doesn't really escape.
|
||||
ptr = c.builder.CreateBitCast(ptr, c.i8ptrType, "")
|
||||
isnil = c.createRuntimeCall("isnil", []llvm.Value{ptr}, "")
|
||||
} else {
|
||||
// Do the nil check using a regular icmp. This can happen with function
|
||||
// pointers on AVR, which don't benefit from escape analysis anyway.
|
||||
nilptr := llvm.ConstPointerNull(ptr.Type())
|
||||
isnil = c.builder.CreateICmp(llvm.IntEQ, ptr, nilptr, "")
|
||||
}
|
||||
c.builder.CreateCondBr(isnil, faultBlock, nextBlock)
|
||||
|
||||
// Fail: this is a nil pointer, exit with a panic.
|
||||
c.builder.SetInsertPointAtEnd(faultBlock)
|
||||
c.createRuntimeCall("nilPanic", nil, "")
|
||||
c.builder.CreateUnreachable()
|
||||
|
||||
// Ok: this is a valid pointer.
|
||||
c.builder.SetInsertPointAtEnd(nextBlock)
|
||||
}
|
||||
+7
-49
@@ -1,9 +1,8 @@
|
||||
package compiler
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/aykevl/go-llvm"
|
||||
"golang.org/x/tools/go/ssa"
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
// For a description of the calling convention in prose, see:
|
||||
@@ -21,12 +20,8 @@ func (c *Compiler) createRuntimeCall(fnName string, args []llvm.Value, name stri
|
||||
panic("trying to call runtime." + fnName)
|
||||
}
|
||||
fn := c.ir.GetFunction(member.(*ssa.Function))
|
||||
if fn.LLVMFn.IsNil() {
|
||||
panic(fmt.Errorf("function %s does not appear in LLVM IR", fnName))
|
||||
}
|
||||
if !fn.IsExported() {
|
||||
args = append(args, llvm.Undef(c.i8ptrType)) // unused context parameter
|
||||
args = append(args, llvm.ConstPointerNull(c.i8ptrType)) // coroutine handle
|
||||
args = append(args, llvm.Undef(c.i8ptrType)) // unused context parameter
|
||||
}
|
||||
return c.createCall(fn.LLVMFn, args, name)
|
||||
}
|
||||
@@ -42,7 +37,7 @@ func (c *Compiler) createCall(fn llvm.Value, args []llvm.Value, name string) llv
|
||||
}
|
||||
|
||||
// Expand an argument type to a list that can be used in a function call
|
||||
// parameter list.
|
||||
// paramter list.
|
||||
func (c *Compiler) expandFormalParamType(t llvm.Type) []llvm.Type {
|
||||
switch t.TypeKind() {
|
||||
case llvm.StructTypeKind:
|
||||
@@ -59,25 +54,6 @@ func (c *Compiler) expandFormalParamType(t llvm.Type) []llvm.Type {
|
||||
}
|
||||
}
|
||||
|
||||
// Expand an argument type to a list of offsets from the start of the object.
|
||||
// Used together with expandFormalParam to get the offset of each value from the
|
||||
// start of the non-expanded value.
|
||||
func (c *Compiler) expandFormalParamOffsets(t llvm.Type) []uint64 {
|
||||
switch t.TypeKind() {
|
||||
case llvm.StructTypeKind:
|
||||
fields := c.flattenAggregateTypeOffsets(t)
|
||||
if len(fields) <= MaxFieldsPerParam {
|
||||
return fields
|
||||
} else {
|
||||
// failed to lower
|
||||
return []uint64{0}
|
||||
}
|
||||
default:
|
||||
// TODO: split small arrays
|
||||
return []uint64{0}
|
||||
}
|
||||
}
|
||||
|
||||
// Equivalent of expandFormalParamType for parameter values.
|
||||
func (c *Compiler) expandFormalParam(v llvm.Value) []llvm.Value {
|
||||
switch v.Type().TypeKind() {
|
||||
@@ -115,27 +91,6 @@ func (c *Compiler) flattenAggregateType(t llvm.Type) []llvm.Type {
|
||||
}
|
||||
}
|
||||
|
||||
// Return the offsets from the start of the object if this object type were
|
||||
// flattened like in flattenAggregate. Used together with flattenAggregate to
|
||||
// know the start indices of each value in the non-flattened object.
|
||||
func (c *Compiler) flattenAggregateTypeOffsets(t llvm.Type) []uint64 {
|
||||
switch t.TypeKind() {
|
||||
case llvm.StructTypeKind:
|
||||
fields := make([]uint64, 0, t.StructElementTypesCount())
|
||||
for fieldIndex, field := range t.StructElementTypes() {
|
||||
suboffsets := c.flattenAggregateTypeOffsets(field)
|
||||
offset := c.targetData.ElementOffset(t, fieldIndex)
|
||||
for i := range suboffsets {
|
||||
suboffsets[i] += offset
|
||||
}
|
||||
fields = append(fields, suboffsets...)
|
||||
}
|
||||
return fields
|
||||
default:
|
||||
return []uint64{0}
|
||||
}
|
||||
}
|
||||
|
||||
// Break down a struct into its elementary types for argument passing. The value
|
||||
// equivalent of flattenAggregateType
|
||||
func (c *Compiler) flattenAggregate(v llvm.Value) []llvm.Value {
|
||||
@@ -167,7 +122,10 @@ func (c *Compiler) collapseFormalParamInternal(t llvm.Type, fields []llvm.Value)
|
||||
switch t.TypeKind() {
|
||||
case llvm.StructTypeKind:
|
||||
if len(c.flattenAggregateType(t)) <= MaxFieldsPerParam {
|
||||
value := llvm.ConstNull(t)
|
||||
value, err := c.getZeroValue(t)
|
||||
if err != nil {
|
||||
panic("could not get zero value of struct: " + err.Error())
|
||||
}
|
||||
for i, subtyp := range t.StructElementTypes() {
|
||||
structField, remaining := c.collapseFormalParamInternal(subtyp, fields)
|
||||
fields = remaining
|
||||
|
||||
@@ -1,237 +0,0 @@
|
||||
package compiler
|
||||
|
||||
// This file lowers channel operations (make/send/recv/close) to runtime calls
|
||||
// or pseudo-operations that are lowered during goroutine lowering.
|
||||
|
||||
import (
|
||||
"go/types"
|
||||
|
||||
"github.com/tinygo-org/tinygo/compiler/llvmutil"
|
||||
"golang.org/x/tools/go/ssa"
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
func (c *Compiler) emitMakeChan(frame *Frame, expr *ssa.MakeChan) llvm.Value {
|
||||
elementSize := c.targetData.TypeAllocSize(c.getLLVMType(expr.Type().(*types.Chan).Elem()))
|
||||
elementSizeValue := llvm.ConstInt(c.uintptrType, elementSize, false)
|
||||
bufSize := c.getValue(frame, expr.Size)
|
||||
return c.createRuntimeCall("chanMake", []llvm.Value{elementSizeValue, bufSize}, "")
|
||||
}
|
||||
|
||||
// emitChanSend emits a pseudo chan send operation. It is lowered to the actual
|
||||
// channel send operation during goroutine lowering.
|
||||
func (c *Compiler) emitChanSend(frame *Frame, instr *ssa.Send) {
|
||||
ch := c.getValue(frame, instr.Chan)
|
||||
chanValue := c.getValue(frame, instr.X)
|
||||
|
||||
// store value-to-send
|
||||
valueType := c.getLLVMType(instr.X.Type())
|
||||
valueAlloca, valueAllocaCast, valueAllocaSize := c.createTemporaryAlloca(valueType, "chan.value")
|
||||
c.builder.CreateStore(chanValue, valueAlloca)
|
||||
|
||||
// Do the send.
|
||||
c.createRuntimeCall("chanSend", []llvm.Value{ch, valueAllocaCast}, "")
|
||||
|
||||
// End the lifetime of the alloca.
|
||||
// This also works around a bug in CoroSplit, at least in LLVM 8:
|
||||
// https://bugs.llvm.org/show_bug.cgi?id=41742
|
||||
c.emitLifetimeEnd(valueAllocaCast, valueAllocaSize)
|
||||
}
|
||||
|
||||
// emitChanRecv emits a pseudo chan receive operation. It is lowered to the
|
||||
// actual channel receive operation during goroutine lowering.
|
||||
func (c *Compiler) emitChanRecv(frame *Frame, unop *ssa.UnOp) llvm.Value {
|
||||
valueType := c.getLLVMType(unop.X.Type().(*types.Chan).Elem())
|
||||
ch := c.getValue(frame, unop.X)
|
||||
|
||||
// Allocate memory to receive into.
|
||||
valueAlloca, valueAllocaCast, valueAllocaSize := c.createTemporaryAlloca(valueType, "chan.value")
|
||||
|
||||
// Do the receive.
|
||||
commaOk := c.createRuntimeCall("chanRecv", []llvm.Value{ch, valueAllocaCast}, "")
|
||||
received := c.builder.CreateLoad(valueAlloca, "chan.received")
|
||||
c.emitLifetimeEnd(valueAllocaCast, valueAllocaSize)
|
||||
|
||||
if unop.CommaOk {
|
||||
tuple := llvm.Undef(c.ctx.StructType([]llvm.Type{valueType, c.ctx.Int1Type()}, false))
|
||||
tuple = c.builder.CreateInsertValue(tuple, received, 0, "")
|
||||
tuple = c.builder.CreateInsertValue(tuple, commaOk, 1, "")
|
||||
return tuple
|
||||
} else {
|
||||
return received
|
||||
}
|
||||
}
|
||||
|
||||
// emitChanClose closes the given channel.
|
||||
func (c *Compiler) emitChanClose(frame *Frame, param ssa.Value) {
|
||||
ch := c.getValue(frame, param)
|
||||
c.createRuntimeCall("chanClose", []llvm.Value{ch}, "")
|
||||
}
|
||||
|
||||
// emitSelect emits all IR necessary for a select statements. That's a
|
||||
// non-trivial amount of code because select is very complex to implement.
|
||||
func (c *Compiler) emitSelect(frame *Frame, expr *ssa.Select) llvm.Value {
|
||||
if len(expr.States) == 0 {
|
||||
// Shortcuts for some simple selects.
|
||||
llvmType := c.getLLVMType(expr.Type())
|
||||
if expr.Blocking {
|
||||
// Blocks forever:
|
||||
// select {}
|
||||
c.createRuntimeCall("deadlock", nil, "")
|
||||
return llvm.Undef(llvmType)
|
||||
} else {
|
||||
// No-op:
|
||||
// select {
|
||||
// default:
|
||||
// }
|
||||
retval := llvm.Undef(llvmType)
|
||||
retval = c.builder.CreateInsertValue(retval, llvm.ConstInt(c.intType, 0xffffffffffffffff, true), 0, "")
|
||||
return retval // {-1, false}
|
||||
}
|
||||
}
|
||||
|
||||
// This code create a (stack-allocated) slice containing all the select
|
||||
// cases and then calls runtime.chanSelect to perform the actual select
|
||||
// statement.
|
||||
// Simple selects (blocking and with just one case) are already transformed
|
||||
// into regular chan operations during SSA construction so we don't have to
|
||||
// optimize such small selects.
|
||||
|
||||
// Go through all the cases. Create the selectStates slice and and
|
||||
// determine the receive buffer size and alignment.
|
||||
recvbufSize := uint64(0)
|
||||
recvbufAlign := 0
|
||||
hasReceives := false
|
||||
var selectStates []llvm.Value
|
||||
chanSelectStateType := c.getLLVMRuntimeType("chanSelectState")
|
||||
for _, state := range expr.States {
|
||||
ch := c.getValue(frame, state.Chan)
|
||||
selectState := llvm.ConstNull(chanSelectStateType)
|
||||
selectState = c.builder.CreateInsertValue(selectState, ch, 0, "")
|
||||
switch state.Dir {
|
||||
case types.RecvOnly:
|
||||
// Make sure the receive buffer is big enough and has the correct alignment.
|
||||
llvmType := c.getLLVMType(state.Chan.Type().(*types.Chan).Elem())
|
||||
if size := c.targetData.TypeAllocSize(llvmType); size > recvbufSize {
|
||||
recvbufSize = size
|
||||
}
|
||||
if align := c.targetData.ABITypeAlignment(llvmType); align > recvbufAlign {
|
||||
recvbufAlign = align
|
||||
}
|
||||
hasReceives = true
|
||||
case types.SendOnly:
|
||||
// Store this value in an alloca and put a pointer to this alloca
|
||||
// in the send state.
|
||||
sendValue := c.getValue(frame, state.Send)
|
||||
alloca := llvmutil.CreateEntryBlockAlloca(c.builder, sendValue.Type(), "select.send.value")
|
||||
c.builder.CreateStore(sendValue, alloca)
|
||||
ptr := c.builder.CreateBitCast(alloca, c.i8ptrType, "")
|
||||
selectState = c.builder.CreateInsertValue(selectState, ptr, 1, "")
|
||||
default:
|
||||
panic("unreachable")
|
||||
}
|
||||
selectStates = append(selectStates, selectState)
|
||||
}
|
||||
|
||||
// Create a receive buffer, where the received value will be stored.
|
||||
recvbuf := llvm.Undef(c.i8ptrType)
|
||||
if hasReceives {
|
||||
allocaType := llvm.ArrayType(c.ctx.Int8Type(), int(recvbufSize))
|
||||
recvbufAlloca, _, _ := c.createTemporaryAlloca(allocaType, "select.recvbuf.alloca")
|
||||
recvbufAlloca.SetAlignment(recvbufAlign)
|
||||
recvbuf = c.builder.CreateGEP(recvbufAlloca, []llvm.Value{
|
||||
llvm.ConstInt(c.ctx.Int32Type(), 0, false),
|
||||
llvm.ConstInt(c.ctx.Int32Type(), 0, false),
|
||||
}, "select.recvbuf")
|
||||
}
|
||||
|
||||
// Create the states slice (allocated on the stack).
|
||||
statesAllocaType := llvm.ArrayType(chanSelectStateType, len(selectStates))
|
||||
statesAlloca, statesI8, statesSize := c.createTemporaryAlloca(statesAllocaType, "select.states.alloca")
|
||||
for i, state := range selectStates {
|
||||
// Set each slice element to the appropriate channel.
|
||||
gep := c.builder.CreateGEP(statesAlloca, []llvm.Value{
|
||||
llvm.ConstInt(c.ctx.Int32Type(), 0, false),
|
||||
llvm.ConstInt(c.ctx.Int32Type(), uint64(i), false),
|
||||
}, "")
|
||||
c.builder.CreateStore(state, gep)
|
||||
}
|
||||
statesPtr := c.builder.CreateGEP(statesAlloca, []llvm.Value{
|
||||
llvm.ConstInt(c.ctx.Int32Type(), 0, false),
|
||||
llvm.ConstInt(c.ctx.Int32Type(), 0, false),
|
||||
}, "select.states")
|
||||
statesLen := llvm.ConstInt(c.uintptrType, uint64(len(selectStates)), false)
|
||||
|
||||
// Do the select in the runtime.
|
||||
var results llvm.Value
|
||||
if expr.Blocking {
|
||||
// Stack-allocate operation structures.
|
||||
// If these were simply created as a slice, they would heap-allocate.
|
||||
chBlockAllocaType := llvm.ArrayType(c.getLLVMRuntimeType("channelBlockedList"), len(selectStates))
|
||||
chBlockAlloca, chBlockAllocaPtr, chBlockSize := c.createTemporaryAlloca(chBlockAllocaType, "select.block.alloca")
|
||||
chBlockLen := llvm.ConstInt(c.uintptrType, uint64(len(selectStates)), false)
|
||||
chBlockPtr := c.builder.CreateGEP(chBlockAlloca, []llvm.Value{
|
||||
llvm.ConstInt(c.ctx.Int32Type(), 0, false),
|
||||
llvm.ConstInt(c.ctx.Int32Type(), 0, false),
|
||||
}, "select.block")
|
||||
|
||||
results = c.createRuntimeCall("chanSelect", []llvm.Value{
|
||||
recvbuf,
|
||||
statesPtr, statesLen, statesLen, // []chanSelectState
|
||||
chBlockPtr, chBlockLen, chBlockLen, // []channelBlockList
|
||||
}, "select.result")
|
||||
|
||||
// Terminate the lifetime of the operation structures.
|
||||
c.emitLifetimeEnd(chBlockAllocaPtr, chBlockSize)
|
||||
} else {
|
||||
results = c.createRuntimeCall("tryChanSelect", []llvm.Value{
|
||||
recvbuf,
|
||||
statesPtr, statesLen, statesLen, // []chanSelectState
|
||||
}, "select.result")
|
||||
}
|
||||
|
||||
// Terminate the lifetime of the states alloca.
|
||||
c.emitLifetimeEnd(statesI8, statesSize)
|
||||
|
||||
// The result value does not include all the possible received values,
|
||||
// because we can't load them in advance. Instead, the *ssa.Extract
|
||||
// instruction will treat a *ssa.Select specially and load it there inline.
|
||||
// Store the receive alloca in a sidetable until we hit this extract
|
||||
// instruction.
|
||||
if frame.selectRecvBuf == nil {
|
||||
frame.selectRecvBuf = make(map[*ssa.Select]llvm.Value)
|
||||
}
|
||||
frame.selectRecvBuf[expr] = recvbuf
|
||||
|
||||
return results
|
||||
}
|
||||
|
||||
// getChanSelectResult returns the special values from a *ssa.Extract expression
|
||||
// when extracting a value from a select statement (*ssa.Select). Because
|
||||
// *ssa.Select cannot load all values in advance, it does this later in the
|
||||
// *ssa.Extract expression.
|
||||
func (c *Compiler) getChanSelectResult(frame *Frame, expr *ssa.Extract) llvm.Value {
|
||||
if expr.Index == 0 {
|
||||
// index
|
||||
value := c.getValue(frame, expr.Tuple)
|
||||
index := c.builder.CreateExtractValue(value, expr.Index, "")
|
||||
if index.Type().IntTypeWidth() < c.intType.IntTypeWidth() {
|
||||
index = c.builder.CreateSExt(index, c.intType, "")
|
||||
}
|
||||
return index
|
||||
} else if expr.Index == 1 {
|
||||
// comma-ok
|
||||
value := c.getValue(frame, expr.Tuple)
|
||||
return c.builder.CreateExtractValue(value, expr.Index, "")
|
||||
} else {
|
||||
// Select statements are (index, ok, ...) where ... is a number of
|
||||
// received values, depending on how many receive statements there
|
||||
// are. They are all combined into one alloca (because only one
|
||||
// receive can proceed at a time) so we'll get that alloca, bitcast
|
||||
// it to the correct type, and dereference it.
|
||||
recvbuf := frame.selectRecvBuf[expr.Tuple.(*ssa.Select)]
|
||||
typ := llvm.PointerType(c.getLLVMType(expr.Type()), 0)
|
||||
ptr := c.builder.CreateBitCast(recvbuf, typ, "")
|
||||
return c.builder.CreateLoad(ptr, "")
|
||||
}
|
||||
}
|
||||
@@ -1,173 +0,0 @@
|
||||
package compiler
|
||||
|
||||
// This file implements a set of sanity checks for the IR that is generated.
|
||||
// It can catch some mistakes that LLVM's verifier cannot.
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
func (c *Compiler) checkType(t llvm.Type, checked map[llvm.Type]struct{}, specials map[llvm.TypeKind]llvm.Type) error {
|
||||
// prevent infinite recursion for self-referential types
|
||||
if _, ok := checked[t]; ok {
|
||||
return nil
|
||||
}
|
||||
checked[t] = struct{}{}
|
||||
|
||||
// check for any context mismatches
|
||||
switch {
|
||||
case t.Context() == c.ctx:
|
||||
// this is correct
|
||||
case t.Context() == llvm.GlobalContext():
|
||||
// somewhere we accidentally used the global context instead of a real context
|
||||
return fmt.Errorf("type %q uses global context", t.String())
|
||||
default:
|
||||
// we used some other context by accident
|
||||
return fmt.Errorf("type %q uses context %v instead of the main context %v", t.Context(), c.ctx)
|
||||
}
|
||||
|
||||
// if this is a composite type, check the components of the type
|
||||
switch t.TypeKind() {
|
||||
case llvm.VoidTypeKind, llvm.LabelTypeKind, llvm.TokenTypeKind, llvm.MetadataTypeKind:
|
||||
// there should only be one of any of these
|
||||
if s, ok := specials[t.TypeKind()]; !ok {
|
||||
specials[t.TypeKind()] = t
|
||||
} else if s != t {
|
||||
return fmt.Errorf("duplicate special type %q: %v and %v", t.TypeKind().String(), t, s)
|
||||
}
|
||||
case llvm.FloatTypeKind, llvm.DoubleTypeKind, llvm.X86_FP80TypeKind, llvm.FP128TypeKind, llvm.PPC_FP128TypeKind:
|
||||
// floating point numbers are primitives - nothing to recurse
|
||||
case llvm.IntegerTypeKind:
|
||||
// integers are primitives - nothing to recurse
|
||||
case llvm.FunctionTypeKind:
|
||||
// check arguments and return(s)
|
||||
for i, v := range t.ParamTypes() {
|
||||
if err := c.checkType(v, checked, specials); err != nil {
|
||||
return fmt.Errorf("failed to verify argument %d of type %s: %s", i, t.String(), err.Error())
|
||||
}
|
||||
}
|
||||
if err := c.checkType(t.ReturnType(), checked, specials); err != nil {
|
||||
return fmt.Errorf("failed to verify return type of type %s: %s", t.String(), err.Error())
|
||||
}
|
||||
case llvm.StructTypeKind:
|
||||
// check all elements
|
||||
for i, v := range t.StructElementTypes() {
|
||||
if err := c.checkType(v, checked, specials); err != nil {
|
||||
return fmt.Errorf("failed to verify type of field %d of struct type %s: %s", i, t.String(), err.Error())
|
||||
}
|
||||
}
|
||||
case llvm.ArrayTypeKind:
|
||||
// check element type
|
||||
if err := c.checkType(t.ElementType(), checked, specials); err != nil {
|
||||
return fmt.Errorf("failed to verify element type of array type %s: %s", t.String(), err.Error())
|
||||
}
|
||||
case llvm.PointerTypeKind:
|
||||
// check underlying type
|
||||
if err := c.checkType(t.ElementType(), checked, specials); err != nil {
|
||||
return fmt.Errorf("failed to verify underlying type of pointer type %s: %s", t.String(), err.Error())
|
||||
}
|
||||
case llvm.VectorTypeKind:
|
||||
// check element type
|
||||
if err := c.checkType(t.ElementType(), checked, specials); err != nil {
|
||||
return fmt.Errorf("failed to verify element type of vector type %s: %s", t.String(), err.Error())
|
||||
}
|
||||
default:
|
||||
return fmt.Errorf("unrecognized kind %q of type %s", t.TypeKind(), t.String())
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *Compiler) checkValue(v llvm.Value, types map[llvm.Type]struct{}, specials map[llvm.TypeKind]llvm.Type) error {
|
||||
// check type
|
||||
if err := c.checkType(v.Type(), types, specials); err != nil {
|
||||
return fmt.Errorf("failed to verify type of value: %s", err.Error())
|
||||
}
|
||||
|
||||
// check if this is an undefined void
|
||||
if v.IsUndef() && v.Type().TypeKind() == llvm.VoidTypeKind {
|
||||
return errors.New("encountered undefined void value")
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *Compiler) checkInstruction(inst llvm.Value, types map[llvm.Type]struct{}, specials map[llvm.TypeKind]llvm.Type) error {
|
||||
// check value properties
|
||||
if err := c.checkValue(inst, types, specials); err != nil {
|
||||
return fmt.Errorf("failed to validate value of instruction %q: %s", inst.Name(), err.Error())
|
||||
}
|
||||
|
||||
// check operands
|
||||
for i := 0; i < inst.OperandsCount(); i++ {
|
||||
if err := c.checkValue(inst.Operand(i), types, specials); err != nil {
|
||||
return fmt.Errorf("failed to validate argument %d of instruction %q: %s", i, inst.Name(), err.Error())
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *Compiler) checkBasicBlock(bb llvm.BasicBlock, types map[llvm.Type]struct{}, specials map[llvm.TypeKind]llvm.Type) error {
|
||||
// check basic block value and type
|
||||
if err := c.checkValue(bb.AsValue(), types, specials); err != nil {
|
||||
return fmt.Errorf("failed to validate value of basic block %s: %s", bb.AsValue().Name(), err.Error())
|
||||
}
|
||||
|
||||
// check instructions
|
||||
for inst := bb.FirstInstruction(); !inst.IsNil(); inst = llvm.NextInstruction(inst) {
|
||||
if err := c.checkInstruction(inst, types, specials); err != nil {
|
||||
return fmt.Errorf("failed to validate basic block %q: %s", bb.AsValue().Name(), err.Error())
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *Compiler) checkFunction(fn llvm.Value, types map[llvm.Type]struct{}, specials map[llvm.TypeKind]llvm.Type) error {
|
||||
// check function value and type
|
||||
if err := c.checkValue(fn, types, specials); err != nil {
|
||||
return fmt.Errorf("failed to validate value of function %s: %s", fn.Name(), err.Error())
|
||||
}
|
||||
|
||||
// check basic blocks
|
||||
for bb := fn.FirstBasicBlock(); !bb.IsNil(); bb = llvm.NextBasicBlock(bb) {
|
||||
if err := c.checkBasicBlock(bb, types, specials); err != nil {
|
||||
return fmt.Errorf("failed to validate basic block of function %s: %s", fn.Name(), err.Error())
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (c *Compiler) checkModule() error {
|
||||
// check for any context mismatches
|
||||
switch {
|
||||
case c.mod.Context() == c.ctx:
|
||||
// this is correct
|
||||
case c.mod.Context() == llvm.GlobalContext():
|
||||
// somewhere we accidentally used the global context instead of a real context
|
||||
return errors.New("module uses global context")
|
||||
default:
|
||||
// we used some other context by accident
|
||||
return fmt.Errorf("module uses context %v instead of the main context %v", c.mod.Context(), c.ctx)
|
||||
}
|
||||
|
||||
types := map[llvm.Type]struct{}{}
|
||||
specials := map[llvm.TypeKind]llvm.Type{}
|
||||
for fn := c.mod.FirstFunction(); !fn.IsNil(); fn = llvm.NextFunction(fn) {
|
||||
if err := c.checkFunction(fn, types, specials); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
for g := c.mod.FirstGlobal(); !g.IsNil(); g = llvm.NextGlobal(g) {
|
||||
if err := c.checkValue(g, types, specials); err != nil {
|
||||
return fmt.Errorf("failed to verify global %s of module: %s", g.Name(), err.Error())
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
+1694
-1132
File diff suppressed because it is too large
Load Diff
+64
-42
@@ -14,9 +14,9 @@ package compiler
|
||||
// frames.
|
||||
|
||||
import (
|
||||
"github.com/tinygo-org/tinygo/ir"
|
||||
"github.com/aykevl/go-llvm"
|
||||
"github.com/aykevl/tinygo/ir"
|
||||
"golang.org/x/tools/go/ssa"
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
// deferInitFunc sets up this function for future deferred calls. It must be
|
||||
@@ -29,14 +29,14 @@ func (c *Compiler) deferInitFunc(frame *Frame) {
|
||||
frame.deferClosureFuncs = make(map[*ir.Function]int)
|
||||
|
||||
// Create defer list pointer.
|
||||
deferType := llvm.PointerType(c.getLLVMRuntimeType("_defer"), 0)
|
||||
deferType := llvm.PointerType(c.mod.GetTypeByName("runtime._defer"), 0)
|
||||
frame.deferPtr = c.builder.CreateAlloca(deferType, "deferPtr")
|
||||
c.builder.CreateStore(llvm.ConstPointerNull(deferType), frame.deferPtr)
|
||||
}
|
||||
|
||||
// emitDefer emits a single defer instruction, to be run when this function
|
||||
// returns.
|
||||
func (c *Compiler) emitDefer(frame *Frame, instr *ssa.Defer) {
|
||||
func (c *Compiler) emitDefer(frame *Frame, instr *ssa.Defer) error {
|
||||
// The pointer to the previous defer struct, which we will replace to
|
||||
// make a linked list.
|
||||
next := c.builder.CreateLoad(frame.deferPtr, "defer.next")
|
||||
@@ -56,12 +56,18 @@ func (c *Compiler) emitDefer(frame *Frame, instr *ssa.Defer) {
|
||||
|
||||
// Collect all values to be put in the struct (starting with
|
||||
// runtime._defer fields, followed by the call parameters).
|
||||
itf := c.getValue(frame, instr.Call.Value) // interface
|
||||
itf, err := c.parseExpr(frame, instr.Call.Value) // interface
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
receiverValue := c.builder.CreateExtractValue(itf, 1, "invoke.func.receiver")
|
||||
values = []llvm.Value{callback, next, receiverValue}
|
||||
valueTypes = append(valueTypes, c.i8ptrType)
|
||||
for _, arg := range instr.Call.Args {
|
||||
val := c.getValue(frame, arg)
|
||||
val, err := c.parseExpr(frame, arg)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
values = append(values, val)
|
||||
valueTypes = append(valueTypes, val.Type())
|
||||
}
|
||||
@@ -80,7 +86,10 @@ func (c *Compiler) emitDefer(frame *Frame, instr *ssa.Defer) {
|
||||
// runtime._defer fields).
|
||||
values = []llvm.Value{callback, next}
|
||||
for _, param := range instr.Call.Args {
|
||||
llvmParam := c.getValue(frame, param)
|
||||
llvmParam, err := c.parseExpr(frame, param)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
values = append(values, llvmParam)
|
||||
valueTypes = append(valueTypes, llvmParam.Type())
|
||||
}
|
||||
@@ -92,7 +101,10 @@ func (c *Compiler) emitDefer(frame *Frame, instr *ssa.Defer) {
|
||||
// pointer.
|
||||
// TODO: ignore this closure entirely and put pointers to the free
|
||||
// variables directly in the defer struct, avoiding a memory allocation.
|
||||
closure := c.getValue(frame, instr.Call.Value)
|
||||
closure, err := c.parseExpr(frame, instr.Call.Value)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
context := c.builder.CreateExtractValue(closure, 0, "")
|
||||
|
||||
// Get the callback number.
|
||||
@@ -108,7 +120,10 @@ func (c *Compiler) emitDefer(frame *Frame, instr *ssa.Defer) {
|
||||
// context pointer).
|
||||
values = []llvm.Value{callback, next}
|
||||
for _, param := range instr.Call.Args {
|
||||
llvmParam := c.getValue(frame, param)
|
||||
llvmParam, err := c.parseExpr(frame, param)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
values = append(values, llvmParam)
|
||||
valueTypes = append(valueTypes, llvmParam.Type())
|
||||
}
|
||||
@@ -116,13 +131,15 @@ func (c *Compiler) emitDefer(frame *Frame, instr *ssa.Defer) {
|
||||
valueTypes = append(valueTypes, context.Type())
|
||||
|
||||
} else {
|
||||
c.addError(instr.Pos(), "todo: defer on uncommon function call type")
|
||||
return
|
||||
return c.makeError(instr.Pos(), "todo: defer on uncommon function call type")
|
||||
}
|
||||
|
||||
// Make a struct out of the collected values to put in the defer frame.
|
||||
deferFrameType := c.ctx.StructType(valueTypes, false)
|
||||
deferFrame := llvm.ConstNull(deferFrameType)
|
||||
deferFrame, err := c.getZeroValue(deferFrameType)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for i, value := range values {
|
||||
deferFrame = c.builder.CreateInsertValue(deferFrame, value, i, "")
|
||||
}
|
||||
@@ -130,17 +147,15 @@ func (c *Compiler) emitDefer(frame *Frame, instr *ssa.Defer) {
|
||||
// Put this struct in an alloca.
|
||||
alloca := c.builder.CreateAlloca(deferFrameType, "defer.alloca")
|
||||
c.builder.CreateStore(deferFrame, alloca)
|
||||
if c.NeedsStackObjects() {
|
||||
c.trackPointer(alloca)
|
||||
}
|
||||
|
||||
// Push it on top of the linked list by replacing deferPtr.
|
||||
allocaCast := c.builder.CreateBitCast(alloca, next.Type(), "defer.alloca.cast")
|
||||
c.builder.CreateStore(allocaCast, frame.deferPtr)
|
||||
return nil
|
||||
}
|
||||
|
||||
// emitRunDefers emits code to run all deferred functions.
|
||||
func (c *Compiler) emitRunDefers(frame *Frame) {
|
||||
func (c *Compiler) emitRunDefers(frame *Frame) error {
|
||||
// Add a loop like the following:
|
||||
// for stack != nil {
|
||||
// _stack := stack
|
||||
@@ -157,10 +172,10 @@ func (c *Compiler) emitRunDefers(frame *Frame) {
|
||||
// }
|
||||
|
||||
// Create loop.
|
||||
loophead := c.ctx.AddBasicBlock(frame.fn.LLVMFn, "rundefers.loophead")
|
||||
loop := c.ctx.AddBasicBlock(frame.fn.LLVMFn, "rundefers.loop")
|
||||
unreachable := c.ctx.AddBasicBlock(frame.fn.LLVMFn, "rundefers.default")
|
||||
end := c.ctx.AddBasicBlock(frame.fn.LLVMFn, "rundefers.end")
|
||||
loophead := llvm.AddBasicBlock(frame.fn.LLVMFn, "rundefers.loophead")
|
||||
loop := llvm.AddBasicBlock(frame.fn.LLVMFn, "rundefers.loop")
|
||||
unreachable := llvm.AddBasicBlock(frame.fn.LLVMFn, "rundefers.default")
|
||||
end := llvm.AddBasicBlock(frame.fn.LLVMFn, "rundefers.end")
|
||||
c.builder.CreateBr(loophead)
|
||||
|
||||
// Create loop head:
|
||||
@@ -175,13 +190,13 @@ func (c *Compiler) emitRunDefers(frame *Frame) {
|
||||
// stack = stack.next
|
||||
// switch stack.callback {
|
||||
c.builder.SetInsertPointAtEnd(loop)
|
||||
nextStackGEP := c.builder.CreateInBoundsGEP(deferData, []llvm.Value{
|
||||
nextStackGEP := c.builder.CreateGEP(deferData, []llvm.Value{
|
||||
llvm.ConstInt(c.ctx.Int32Type(), 0, false),
|
||||
llvm.ConstInt(c.ctx.Int32Type(), 1, false), // .next field
|
||||
}, "stack.next.gep")
|
||||
nextStack := c.builder.CreateLoad(nextStackGEP, "stack.next")
|
||||
c.builder.CreateStore(nextStack, frame.deferPtr)
|
||||
gep := c.builder.CreateInBoundsGEP(deferData, []llvm.Value{
|
||||
gep := c.builder.CreateGEP(deferData, []llvm.Value{
|
||||
llvm.ConstInt(c.ctx.Int32Type(), 0, false),
|
||||
llvm.ConstInt(c.ctx.Int32Type(), 0, false), // .callback field
|
||||
}, "callback.gep")
|
||||
@@ -192,7 +207,7 @@ func (c *Compiler) emitRunDefers(frame *Frame) {
|
||||
// Create switch case, for example:
|
||||
// case 0:
|
||||
// // run first deferred call
|
||||
block := c.ctx.AddBasicBlock(frame.fn.LLVMFn, "rundefers.callback")
|
||||
block := llvm.AddBasicBlock(frame.fn.LLVMFn, "rundefers.callback")
|
||||
sw.AddCase(llvm.ConstInt(c.uintptrType, uint64(i), false), block)
|
||||
c.builder.SetInsertPointAtEnd(block)
|
||||
switch callback := callback.(type) {
|
||||
@@ -203,9 +218,13 @@ func (c *Compiler) emitRunDefers(frame *Frame) {
|
||||
}
|
||||
|
||||
// Get the real defer struct type and cast to it.
|
||||
valueTypes := []llvm.Type{c.uintptrType, llvm.PointerType(c.getLLVMRuntimeType("_defer"), 0), c.i8ptrType}
|
||||
valueTypes := []llvm.Type{c.uintptrType, llvm.PointerType(c.mod.GetTypeByName("runtime._defer"), 0), c.i8ptrType}
|
||||
for _, arg := range callback.Args {
|
||||
valueTypes = append(valueTypes, c.getLLVMType(arg.Type()))
|
||||
llvmType, err := c.getLLVMType(arg.Type())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
valueTypes = append(valueTypes, llvmType)
|
||||
}
|
||||
deferFrameType := c.ctx.StructType(valueTypes, false)
|
||||
deferFramePtr := c.builder.CreateBitCast(deferData, llvm.PointerType(deferFrameType, 0), "deferFrame")
|
||||
@@ -214,7 +233,7 @@ func (c *Compiler) emitRunDefers(frame *Frame) {
|
||||
forwardParams := []llvm.Value{}
|
||||
zero := llvm.ConstInt(c.ctx.Int32Type(), 0, false)
|
||||
for i := 2; i < len(valueTypes); i++ {
|
||||
gep := c.builder.CreateInBoundsGEP(deferFramePtr, []llvm.Value{zero, llvm.ConstInt(c.ctx.Int32Type(), uint64(i), false)}, "gep")
|
||||
gep := c.builder.CreateGEP(deferFramePtr, []llvm.Value{zero, llvm.ConstInt(c.ctx.Int32Type(), uint64(i), false)}, "gep")
|
||||
forwardParam := c.builder.CreateLoad(gep, "param")
|
||||
forwardParams = append(forwardParams, forwardParam)
|
||||
}
|
||||
@@ -224,19 +243,23 @@ func (c *Compiler) emitRunDefers(frame *Frame) {
|
||||
// with a strict calling convention.
|
||||
forwardParams = append(forwardParams, llvm.Undef(c.i8ptrType))
|
||||
|
||||
// Parent coroutine handle.
|
||||
forwardParams = append(forwardParams, llvm.Undef(c.i8ptrType))
|
||||
|
||||
fnPtr, _ := c.getInvokeCall(frame, callback)
|
||||
fnPtr, _, err := c.getInvokeCall(frame, callback)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
c.createCall(fnPtr, forwardParams, "")
|
||||
|
||||
case *ir.Function:
|
||||
// Direct call.
|
||||
|
||||
// Get the real defer struct type and cast to it.
|
||||
valueTypes := []llvm.Type{c.uintptrType, llvm.PointerType(c.getLLVMRuntimeType("_defer"), 0)}
|
||||
valueTypes := []llvm.Type{c.uintptrType, llvm.PointerType(c.mod.GetTypeByName("runtime._defer"), 0)}
|
||||
for _, param := range callback.Params {
|
||||
valueTypes = append(valueTypes, c.getLLVMType(param.Type()))
|
||||
llvmType, err := c.getLLVMType(param.Type())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
valueTypes = append(valueTypes, llvmType)
|
||||
}
|
||||
deferFrameType := c.ctx.StructType(valueTypes, false)
|
||||
deferFramePtr := c.builder.CreateBitCast(deferData, llvm.PointerType(deferFrameType, 0), "deferFrame")
|
||||
@@ -245,7 +268,7 @@ func (c *Compiler) emitRunDefers(frame *Frame) {
|
||||
forwardParams := []llvm.Value{}
|
||||
zero := llvm.ConstInt(c.ctx.Int32Type(), 0, false)
|
||||
for i := range callback.Params {
|
||||
gep := c.builder.CreateInBoundsGEP(deferFramePtr, []llvm.Value{zero, llvm.ConstInt(c.ctx.Int32Type(), uint64(i+2), false)}, "gep")
|
||||
gep := c.builder.CreateGEP(deferFramePtr, []llvm.Value{zero, llvm.ConstInt(c.ctx.Int32Type(), uint64(i+2), false)}, "gep")
|
||||
forwardParam := c.builder.CreateLoad(gep, "param")
|
||||
forwardParams = append(forwardParams, forwardParam)
|
||||
}
|
||||
@@ -254,19 +277,20 @@ func (c *Compiler) emitRunDefers(frame *Frame) {
|
||||
// function, but we have to pass one anyway.
|
||||
forwardParams = append(forwardParams, llvm.Undef(c.i8ptrType))
|
||||
|
||||
// Parent coroutine handle.
|
||||
forwardParams = append(forwardParams, llvm.Undef(c.i8ptrType))
|
||||
|
||||
// Call real function.
|
||||
c.createCall(callback.LLVMFn, forwardParams, "")
|
||||
|
||||
case *ssa.MakeClosure:
|
||||
// Get the real defer struct type and cast to it.
|
||||
fn := c.ir.GetFunction(callback.Fn.(*ssa.Function))
|
||||
valueTypes := []llvm.Type{c.uintptrType, llvm.PointerType(c.getLLVMRuntimeType("_defer"), 0)}
|
||||
valueTypes := []llvm.Type{c.uintptrType, llvm.PointerType(c.mod.GetTypeByName("runtime._defer"), 0)}
|
||||
params := fn.Signature.Params()
|
||||
for i := 0; i < params.Len(); i++ {
|
||||
valueTypes = append(valueTypes, c.getLLVMType(params.At(i).Type()))
|
||||
llvmType, err := c.getLLVMType(params.At(i).Type())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
valueTypes = append(valueTypes, llvmType)
|
||||
}
|
||||
valueTypes = append(valueTypes, c.i8ptrType) // closure
|
||||
deferFrameType := c.ctx.StructType(valueTypes, false)
|
||||
@@ -276,14 +300,11 @@ func (c *Compiler) emitRunDefers(frame *Frame) {
|
||||
forwardParams := []llvm.Value{}
|
||||
zero := llvm.ConstInt(c.ctx.Int32Type(), 0, false)
|
||||
for i := 2; i < len(valueTypes); i++ {
|
||||
gep := c.builder.CreateInBoundsGEP(deferFramePtr, []llvm.Value{zero, llvm.ConstInt(c.ctx.Int32Type(), uint64(i), false)}, "")
|
||||
gep := c.builder.CreateGEP(deferFramePtr, []llvm.Value{zero, llvm.ConstInt(c.ctx.Int32Type(), uint64(i), false)}, "")
|
||||
forwardParam := c.builder.CreateLoad(gep, "param")
|
||||
forwardParams = append(forwardParams, forwardParam)
|
||||
}
|
||||
|
||||
// Parent coroutine handle.
|
||||
forwardParams = append(forwardParams, llvm.Undef(c.i8ptrType))
|
||||
|
||||
// Call deferred function.
|
||||
c.createCall(fn.LLVMFn, forwardParams, "")
|
||||
|
||||
@@ -304,4 +325,5 @@ func (c *Compiler) emitRunDefers(frame *Frame) {
|
||||
|
||||
// End of loop.
|
||||
c.builder.SetInsertPointAtEnd(end)
|
||||
return nil
|
||||
}
|
||||
|
||||
@@ -12,7 +12,3 @@ func (c *Compiler) makeError(pos token.Pos, msg string) types.Error {
|
||||
Msg: msg,
|
||||
}
|
||||
}
|
||||
|
||||
func (c *Compiler) addError(pos token.Pos, msg string) {
|
||||
c.diagnostics = append(c.diagnostics, c.makeError(pos, msg))
|
||||
}
|
||||
|
||||
@@ -1,293 +0,0 @@
|
||||
package compiler
|
||||
|
||||
// This file lowers func values into their final form. This is necessary for
|
||||
// funcValueSwitch, which needs full program analysis.
|
||||
|
||||
import (
|
||||
"sort"
|
||||
"strconv"
|
||||
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
// funcSignatureInfo keeps information about a single signature and its uses.
|
||||
type funcSignatureInfo struct {
|
||||
sig llvm.Value // *uint8 to identify the signature
|
||||
funcValueWithSignatures []llvm.Value // slice of runtime.funcValueWithSignature
|
||||
}
|
||||
|
||||
// funcWithUses keeps information about a single function used as func value and
|
||||
// the assigned function ID. More commonly used functions are assigned a lower
|
||||
// ID.
|
||||
type funcWithUses struct {
|
||||
funcPtr llvm.Value
|
||||
useCount int // how often this function is used in a func value
|
||||
id int // assigned ID
|
||||
}
|
||||
|
||||
// Slice to sort functions by their use counts, or else their name if they're
|
||||
// used equally often.
|
||||
type funcWithUsesList []*funcWithUses
|
||||
|
||||
func (l funcWithUsesList) Len() int { return len(l) }
|
||||
func (l funcWithUsesList) Less(i, j int) bool {
|
||||
if l[i].useCount != l[j].useCount {
|
||||
// return the reverse: we want the highest use counts sorted first
|
||||
return l[i].useCount > l[j].useCount
|
||||
}
|
||||
iName := l[i].funcPtr.Name()
|
||||
jName := l[j].funcPtr.Name()
|
||||
return iName < jName
|
||||
}
|
||||
func (l funcWithUsesList) Swap(i, j int) {
|
||||
l[i], l[j] = l[j], l[i]
|
||||
}
|
||||
|
||||
// LowerFuncValue lowers the runtime.funcValueWithSignature type and
|
||||
// runtime.getFuncPtr function to their final form.
|
||||
func (c *Compiler) LowerFuncValues() {
|
||||
if c.funcImplementation() != funcValueSwitch {
|
||||
return
|
||||
}
|
||||
|
||||
// Find all func values used in the program with their signatures.
|
||||
funcValueWithSignaturePtr := llvm.PointerType(c.getLLVMRuntimeType("funcValueWithSignature"), 0)
|
||||
signatures := map[string]*funcSignatureInfo{}
|
||||
for global := c.mod.FirstGlobal(); !global.IsNil(); global = llvm.NextGlobal(global) {
|
||||
if global.Type() != funcValueWithSignaturePtr {
|
||||
continue
|
||||
}
|
||||
sig := llvm.ConstExtractValue(global.Initializer(), []uint32{1})
|
||||
name := sig.Name()
|
||||
if info, ok := signatures[name]; ok {
|
||||
info.funcValueWithSignatures = append(info.funcValueWithSignatures, global)
|
||||
} else {
|
||||
signatures[name] = &funcSignatureInfo{
|
||||
sig: sig,
|
||||
funcValueWithSignatures: []llvm.Value{global},
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Sort the signatures, for deterministic execution.
|
||||
names := make([]string, 0, len(signatures))
|
||||
for name := range signatures {
|
||||
names = append(names, name)
|
||||
}
|
||||
sort.Strings(names)
|
||||
|
||||
for _, name := range names {
|
||||
info := signatures[name]
|
||||
functions := make(funcWithUsesList, len(info.funcValueWithSignatures))
|
||||
for i, use := range info.funcValueWithSignatures {
|
||||
var useCount int
|
||||
for _, use2 := range getUses(use) {
|
||||
useCount += len(getUses(use2))
|
||||
}
|
||||
functions[i] = &funcWithUses{
|
||||
funcPtr: llvm.ConstExtractValue(use.Initializer(), []uint32{0}).Operand(0),
|
||||
useCount: useCount,
|
||||
}
|
||||
}
|
||||
sort.Sort(functions)
|
||||
|
||||
for i, fn := range functions {
|
||||
fn.id = i + 1
|
||||
for _, ptrtoint := range getUses(fn.funcPtr) {
|
||||
if ptrtoint.IsAConstantExpr().IsNil() || ptrtoint.Opcode() != llvm.PtrToInt {
|
||||
continue
|
||||
}
|
||||
for _, funcValueWithSignatureConstant := range getUses(ptrtoint) {
|
||||
if !funcValueWithSignatureConstant.IsACallInst().IsNil() && funcValueWithSignatureConstant.CalledValue().Name() == "runtime.makeGoroutine" {
|
||||
// makeGoroutine calls are handled seperately
|
||||
continue
|
||||
}
|
||||
for _, funcValueWithSignatureGlobal := range getUses(funcValueWithSignatureConstant) {
|
||||
for _, use := range getUses(funcValueWithSignatureGlobal) {
|
||||
if ptrtoint.IsAConstantExpr().IsNil() || ptrtoint.Opcode() != llvm.PtrToInt {
|
||||
panic("expected const ptrtoint")
|
||||
}
|
||||
use.ReplaceAllUsesWith(llvm.ConstInt(c.uintptrType, uint64(fn.id), false))
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
for _, getFuncPtrCall := range getUses(info.sig) {
|
||||
if getFuncPtrCall.IsACallInst().IsNil() {
|
||||
continue
|
||||
}
|
||||
if getFuncPtrCall.CalledValue().Name() != "runtime.getFuncPtr" {
|
||||
panic("expected all call uses to be runtime.getFuncPtr")
|
||||
}
|
||||
funcID := getFuncPtrCall.Operand(1)
|
||||
switch len(functions) {
|
||||
case 0:
|
||||
// There are no functions used in a func value that implement
|
||||
// this signature. The only possible value is a nil value.
|
||||
for _, inttoptr := range getUses(getFuncPtrCall) {
|
||||
if inttoptr.IsAIntToPtrInst().IsNil() {
|
||||
panic("expected inttoptr")
|
||||
}
|
||||
nilptr := llvm.ConstPointerNull(inttoptr.Type())
|
||||
inttoptr.ReplaceAllUsesWith(nilptr)
|
||||
inttoptr.EraseFromParentAsInstruction()
|
||||
}
|
||||
getFuncPtrCall.EraseFromParentAsInstruction()
|
||||
case 1:
|
||||
// There is exactly one function with this signature that is
|
||||
// used in a func value. The func value itself can be either nil
|
||||
// or this one function.
|
||||
c.builder.SetInsertPointBefore(getFuncPtrCall)
|
||||
zero := llvm.ConstInt(c.uintptrType, 0, false)
|
||||
isnil := c.builder.CreateICmp(llvm.IntEQ, funcID, zero, "")
|
||||
funcPtrNil := llvm.ConstPointerNull(functions[0].funcPtr.Type())
|
||||
funcPtr := c.builder.CreateSelect(isnil, funcPtrNil, functions[0].funcPtr, "")
|
||||
for _, inttoptr := range getUses(getFuncPtrCall) {
|
||||
if inttoptr.IsAIntToPtrInst().IsNil() {
|
||||
panic("expected inttoptr")
|
||||
}
|
||||
inttoptr.ReplaceAllUsesWith(funcPtr)
|
||||
inttoptr.EraseFromParentAsInstruction()
|
||||
}
|
||||
getFuncPtrCall.EraseFromParentAsInstruction()
|
||||
default:
|
||||
// There are multiple functions used in a func value that
|
||||
// implement this signature.
|
||||
// What we'll do is transform the following:
|
||||
// rawPtr := runtime.getFuncPtr(func.ptr)
|
||||
// if rawPtr == nil {
|
||||
// runtime.nilPanic()
|
||||
// }
|
||||
// result := rawPtr(...args, func.context)
|
||||
// into this:
|
||||
// if false {
|
||||
// runtime.nilPanic()
|
||||
// }
|
||||
// var result // Phi
|
||||
// switch fn.id {
|
||||
// case 0:
|
||||
// runtime.nilPanic()
|
||||
// case 1:
|
||||
// result = call first implementation...
|
||||
// case 2:
|
||||
// result = call second implementation...
|
||||
// default:
|
||||
// unreachable
|
||||
// }
|
||||
|
||||
// Remove some casts, checks, and the old call which we're going
|
||||
// to replace.
|
||||
for _, callIntPtr := range getUses(getFuncPtrCall) {
|
||||
if !callIntPtr.IsACallInst().IsNil() && callIntPtr.CalledValue().Name() == "runtime.makeGoroutine" {
|
||||
for _, inttoptr := range getUses(callIntPtr) {
|
||||
if inttoptr.IsAIntToPtrInst().IsNil() {
|
||||
panic("expected a inttoptr")
|
||||
}
|
||||
for _, use := range getUses(inttoptr) {
|
||||
c.addFuncLoweringSwitch(funcID, use, func(funcPtr llvm.Value, params []llvm.Value) llvm.Value {
|
||||
// The function lowering switch code passes in a parent handle value.
|
||||
// Strip the parent handle off here because it is irrelevant to goroutine starts.
|
||||
return c.emitStartGoroutine(funcPtr, params[:len(params)-1])
|
||||
}, functions)
|
||||
use.EraseFromParentAsInstruction()
|
||||
}
|
||||
inttoptr.EraseFromParentAsInstruction()
|
||||
}
|
||||
callIntPtr.EraseFromParentAsInstruction()
|
||||
continue
|
||||
}
|
||||
if callIntPtr.IsAIntToPtrInst().IsNil() {
|
||||
panic("expected inttoptr")
|
||||
}
|
||||
for _, ptrUse := range getUses(callIntPtr) {
|
||||
if !ptrUse.IsABitCastInst().IsNil() {
|
||||
for _, bitcastUse := range getUses(ptrUse) {
|
||||
if bitcastUse.IsACallInst().IsNil() || bitcastUse.CalledValue().IsAFunction().IsNil() {
|
||||
panic("expected a call instruction")
|
||||
}
|
||||
switch bitcastUse.CalledValue().Name() {
|
||||
case "runtime.isnil":
|
||||
bitcastUse.ReplaceAllUsesWith(llvm.ConstInt(c.ctx.Int1Type(), 0, false))
|
||||
bitcastUse.EraseFromParentAsInstruction()
|
||||
default:
|
||||
panic("expected a call to runtime.isnil")
|
||||
}
|
||||
}
|
||||
} else if !ptrUse.IsACallInst().IsNil() && ptrUse.CalledValue() == callIntPtr {
|
||||
c.addFuncLoweringSwitch(funcID, ptrUse, func(funcPtr llvm.Value, params []llvm.Value) llvm.Value {
|
||||
return c.builder.CreateCall(funcPtr, params, "")
|
||||
}, functions)
|
||||
} else {
|
||||
panic("unexpected getFuncPtrCall")
|
||||
}
|
||||
ptrUse.EraseFromParentAsInstruction()
|
||||
}
|
||||
callIntPtr.EraseFromParentAsInstruction()
|
||||
}
|
||||
getFuncPtrCall.EraseFromParentAsInstruction()
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// addFuncLoweringSwitch creates a new switch on a function ID and inserts calls
|
||||
// to the newly created direct calls. The funcID is the number to switch on,
|
||||
// call is the call instruction to replace, and createCall is the callback that
|
||||
// actually creates the new call. By changing createCall to something other than
|
||||
// c.builder.CreateCall, instead of calling a function it can start a new
|
||||
// goroutine for example.
|
||||
func (c *Compiler) addFuncLoweringSwitch(funcID, call llvm.Value, createCall func(funcPtr llvm.Value, params []llvm.Value) llvm.Value, functions funcWithUsesList) {
|
||||
// The block that cannot be reached with correct funcValues (to help the
|
||||
// optimizer).
|
||||
c.builder.SetInsertPointBefore(call)
|
||||
defaultBlock := c.ctx.AddBasicBlock(call.InstructionParent().Parent(), "func.default")
|
||||
c.builder.SetInsertPointAtEnd(defaultBlock)
|
||||
c.builder.CreateUnreachable()
|
||||
|
||||
// Create the switch.
|
||||
c.builder.SetInsertPointBefore(call)
|
||||
sw := c.builder.CreateSwitch(funcID, defaultBlock, len(functions)+1)
|
||||
|
||||
// Split right after the switch. We will need to insert a few basic blocks
|
||||
// in this gap.
|
||||
nextBlock := c.splitBasicBlock(sw, llvm.NextBasicBlock(sw.InstructionParent()), "func.next")
|
||||
|
||||
// The 0 case, which is actually a nil check.
|
||||
nilBlock := c.ctx.InsertBasicBlock(nextBlock, "func.nil")
|
||||
c.builder.SetInsertPointAtEnd(nilBlock)
|
||||
c.createRuntimeCall("nilPanic", nil, "")
|
||||
c.builder.CreateUnreachable()
|
||||
sw.AddCase(llvm.ConstInt(c.uintptrType, 0, false), nilBlock)
|
||||
|
||||
// Gather the list of parameters for every call we're going to make.
|
||||
callParams := make([]llvm.Value, call.OperandsCount()-1)
|
||||
for i := range callParams {
|
||||
callParams[i] = call.Operand(i)
|
||||
}
|
||||
|
||||
// If the call produces a value, we need to get it using a PHI
|
||||
// node.
|
||||
phiBlocks := make([]llvm.BasicBlock, len(functions))
|
||||
phiValues := make([]llvm.Value, len(functions))
|
||||
for i, fn := range functions {
|
||||
// Insert a switch case.
|
||||
bb := c.ctx.InsertBasicBlock(nextBlock, "func.call"+strconv.Itoa(fn.id))
|
||||
c.builder.SetInsertPointAtEnd(bb)
|
||||
result := createCall(fn.funcPtr, callParams)
|
||||
c.builder.CreateBr(nextBlock)
|
||||
sw.AddCase(llvm.ConstInt(c.uintptrType, uint64(fn.id), false), bb)
|
||||
phiBlocks[i] = bb
|
||||
phiValues[i] = result
|
||||
}
|
||||
// Create the PHI node so that the call result flows into the
|
||||
// next block (after the split). This is only necessary when the
|
||||
// call produced a value.
|
||||
if call.Type().TypeKind() != llvm.VoidTypeKind {
|
||||
c.builder.SetInsertPointBefore(nextBlock.FirstInstruction())
|
||||
phi := c.builder.CreatePHI(call.Type(), "")
|
||||
phi.AddIncoming(phiValues, phiBlocks)
|
||||
call.ReplaceAllUsesWith(phi)
|
||||
}
|
||||
}
|
||||
@@ -1,191 +0,0 @@
|
||||
package compiler
|
||||
|
||||
// This file implements function values and closures. It may need some lowering
|
||||
// in a later step, see func-lowering.go.
|
||||
|
||||
import (
|
||||
"go/types"
|
||||
|
||||
"golang.org/x/tools/go/ssa"
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
type funcValueImplementation int
|
||||
|
||||
const (
|
||||
funcValueNone funcValueImplementation = iota
|
||||
|
||||
// A func value is implemented as a pair of pointers:
|
||||
// {context, function pointer}
|
||||
// where the context may be a pointer to a heap-allocated struct containing
|
||||
// the free variables, or it may be undef if the function being pointed to
|
||||
// doesn't need a context. The function pointer is a regular function
|
||||
// pointer.
|
||||
funcValueDoubleword
|
||||
|
||||
// As funcValueDoubleword, but with the function pointer replaced by a
|
||||
// unique ID per function signature. Function values are called by using a
|
||||
// switch statement and choosing which function to call.
|
||||
funcValueSwitch
|
||||
)
|
||||
|
||||
// funcImplementation picks an appropriate func value implementation for the
|
||||
// target.
|
||||
func (c *Compiler) funcImplementation() funcValueImplementation {
|
||||
// Always pick the switch implementation, as it allows the use of blocking
|
||||
// inside a function that is used as a func value.
|
||||
switch c.Scheduler() {
|
||||
case "coroutines":
|
||||
return funcValueSwitch
|
||||
case "tasks":
|
||||
return funcValueDoubleword
|
||||
default:
|
||||
panic("unknown scheduler type")
|
||||
}
|
||||
}
|
||||
|
||||
// createFuncValue creates a function value from a raw function pointer with no
|
||||
// context.
|
||||
func (c *Compiler) createFuncValue(funcPtr, context llvm.Value, sig *types.Signature) llvm.Value {
|
||||
var funcValueScalar llvm.Value
|
||||
switch c.funcImplementation() {
|
||||
case funcValueDoubleword:
|
||||
// Closure is: {context, function pointer}
|
||||
funcValueScalar = funcPtr
|
||||
case funcValueSwitch:
|
||||
sigGlobal := c.getTypeCode(sig)
|
||||
funcValueWithSignatureGlobalName := funcPtr.Name() + "$withSignature"
|
||||
funcValueWithSignatureGlobal := c.mod.NamedGlobal(funcValueWithSignatureGlobalName)
|
||||
if funcValueWithSignatureGlobal.IsNil() {
|
||||
funcValueWithSignatureType := c.getLLVMRuntimeType("funcValueWithSignature")
|
||||
funcValueWithSignature := llvm.ConstNamedStruct(funcValueWithSignatureType, []llvm.Value{
|
||||
llvm.ConstPtrToInt(funcPtr, c.uintptrType),
|
||||
sigGlobal,
|
||||
})
|
||||
funcValueWithSignatureGlobal = llvm.AddGlobal(c.mod, funcValueWithSignatureType, funcValueWithSignatureGlobalName)
|
||||
funcValueWithSignatureGlobal.SetInitializer(funcValueWithSignature)
|
||||
funcValueWithSignatureGlobal.SetGlobalConstant(true)
|
||||
funcValueWithSignatureGlobal.SetLinkage(llvm.InternalLinkage)
|
||||
}
|
||||
funcValueScalar = llvm.ConstPtrToInt(funcValueWithSignatureGlobal, c.uintptrType)
|
||||
default:
|
||||
panic("unimplemented func value variant")
|
||||
}
|
||||
funcValueType := c.getFuncType(sig)
|
||||
funcValue := llvm.Undef(funcValueType)
|
||||
funcValue = c.builder.CreateInsertValue(funcValue, context, 0, "")
|
||||
funcValue = c.builder.CreateInsertValue(funcValue, funcValueScalar, 1, "")
|
||||
return funcValue
|
||||
}
|
||||
|
||||
// extractFuncScalar returns some scalar that can be used in comparisons. It is
|
||||
// a cheap operation.
|
||||
func (c *Compiler) extractFuncScalar(funcValue llvm.Value) llvm.Value {
|
||||
return c.builder.CreateExtractValue(funcValue, 1, "")
|
||||
}
|
||||
|
||||
// extractFuncContext extracts the context pointer from this function value. It
|
||||
// is a cheap operation.
|
||||
func (c *Compiler) extractFuncContext(funcValue llvm.Value) llvm.Value {
|
||||
return c.builder.CreateExtractValue(funcValue, 0, "")
|
||||
}
|
||||
|
||||
// decodeFuncValue extracts the context and the function pointer from this func
|
||||
// value. This may be an expensive operation.
|
||||
func (c *Compiler) decodeFuncValue(funcValue llvm.Value, sig *types.Signature) (funcPtr, context llvm.Value) {
|
||||
context = c.builder.CreateExtractValue(funcValue, 0, "")
|
||||
switch c.funcImplementation() {
|
||||
case funcValueDoubleword:
|
||||
funcPtr = c.builder.CreateExtractValue(funcValue, 1, "")
|
||||
case funcValueSwitch:
|
||||
llvmSig := c.getRawFuncType(sig)
|
||||
sigGlobal := c.getTypeCode(sig)
|
||||
funcPtr = c.createRuntimeCall("getFuncPtr", []llvm.Value{funcValue, sigGlobal}, "")
|
||||
funcPtr = c.builder.CreateIntToPtr(funcPtr, llvmSig, "")
|
||||
default:
|
||||
panic("unimplemented func value variant")
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// getFuncType returns the type of a func value given a signature.
|
||||
func (c *Compiler) getFuncType(typ *types.Signature) llvm.Type {
|
||||
switch c.funcImplementation() {
|
||||
case funcValueDoubleword:
|
||||
rawPtr := c.getRawFuncType(typ)
|
||||
return c.ctx.StructType([]llvm.Type{c.i8ptrType, rawPtr}, false)
|
||||
case funcValueSwitch:
|
||||
return c.getLLVMRuntimeType("funcValue")
|
||||
default:
|
||||
panic("unimplemented func value variant")
|
||||
}
|
||||
}
|
||||
|
||||
// getRawFuncType returns a LLVM function pointer type for a given signature.
|
||||
func (c *Compiler) getRawFuncType(typ *types.Signature) llvm.Type {
|
||||
// Get the return type.
|
||||
var returnType llvm.Type
|
||||
switch typ.Results().Len() {
|
||||
case 0:
|
||||
// No return values.
|
||||
returnType = c.ctx.VoidType()
|
||||
case 1:
|
||||
// Just one return value.
|
||||
returnType = c.getLLVMType(typ.Results().At(0).Type())
|
||||
default:
|
||||
// Multiple return values. Put them together in a struct.
|
||||
// This appears to be the common way to handle multiple return values in
|
||||
// LLVM.
|
||||
members := make([]llvm.Type, typ.Results().Len())
|
||||
for i := 0; i < typ.Results().Len(); i++ {
|
||||
members[i] = c.getLLVMType(typ.Results().At(i).Type())
|
||||
}
|
||||
returnType = c.ctx.StructType(members, false)
|
||||
}
|
||||
|
||||
// Get the parameter types.
|
||||
var paramTypes []llvm.Type
|
||||
if typ.Recv() != nil {
|
||||
recv := c.getLLVMType(typ.Recv().Type())
|
||||
if recv.StructName() == "runtime._interface" {
|
||||
// This is a call on an interface, not a concrete type.
|
||||
// The receiver is not an interface, but a i8* type.
|
||||
recv = c.i8ptrType
|
||||
}
|
||||
paramTypes = append(paramTypes, c.expandFormalParamType(recv)...)
|
||||
}
|
||||
for i := 0; i < typ.Params().Len(); i++ {
|
||||
subType := c.getLLVMType(typ.Params().At(i).Type())
|
||||
paramTypes = append(paramTypes, c.expandFormalParamType(subType)...)
|
||||
}
|
||||
// All functions take these parameters at the end.
|
||||
paramTypes = append(paramTypes, c.i8ptrType) // context
|
||||
paramTypes = append(paramTypes, c.i8ptrType) // parent coroutine
|
||||
|
||||
// Make a func type out of the signature.
|
||||
return llvm.PointerType(llvm.FunctionType(returnType, paramTypes, false), c.funcPtrAddrSpace)
|
||||
}
|
||||
|
||||
// parseMakeClosure makes a function value (with context) from the given
|
||||
// closure expression.
|
||||
func (c *Compiler) parseMakeClosure(frame *Frame, expr *ssa.MakeClosure) (llvm.Value, error) {
|
||||
if len(expr.Bindings) == 0 {
|
||||
panic("unexpected: MakeClosure without bound variables")
|
||||
}
|
||||
f := c.ir.GetFunction(expr.Fn.(*ssa.Function))
|
||||
|
||||
// Collect all bound variables.
|
||||
boundVars := make([]llvm.Value, len(expr.Bindings))
|
||||
for i, binding := range expr.Bindings {
|
||||
// The context stores the bound variables.
|
||||
llvmBoundVar := c.getValue(frame, binding)
|
||||
boundVars[i] = llvmBoundVar
|
||||
}
|
||||
|
||||
// Store the bound variables in a single object, allocating it on the heap
|
||||
// if necessary.
|
||||
context := c.emitPointerPack(boundVars)
|
||||
|
||||
// Create the closure.
|
||||
return c.createFuncValue(f.LLVMFn, context, f.Signature), nil
|
||||
}
|
||||
@@ -0,0 +1,199 @@
|
||||
package compiler
|
||||
|
||||
// This file implements a compiler pass to move GC pointers to a "shadow stack"
|
||||
// that can easily be scanned by a garbage collector, even without platform
|
||||
// support.
|
||||
// For more information, see:
|
||||
// https://llvm.org/docs/GarbageCollection.html#the-shadow-stack-gc
|
||||
|
||||
import (
|
||||
"github.com/aykevl/go-llvm"
|
||||
)
|
||||
|
||||
// AddGCRoots moves pointer values to shadow stack frames when this function (or
|
||||
// any function it calls) may allocate something. This allows the GC to scan the
|
||||
// stack in a highly portable way.
|
||||
func (c *Compiler) AddGCRoots() {
|
||||
alloc := c.mod.NamedFunction("runtime.alloc")
|
||||
if alloc.IsNil() {
|
||||
return
|
||||
}
|
||||
|
||||
// Find all functions that do memory allocation.
|
||||
worklist := []llvm.Value{alloc}
|
||||
allocSet := make(map[llvm.Value]struct{})
|
||||
allocList := make([]llvm.Value, 0, 4)
|
||||
for len(worklist) != 0 {
|
||||
// Pick the topmost.
|
||||
f := worklist[len(worklist)-1]
|
||||
worklist = worklist[:len(worklist)-1]
|
||||
if _, ok := allocSet[f]; ok {
|
||||
continue // already added to list
|
||||
}
|
||||
// Add to set of allocating functions.
|
||||
allocSet[f] = struct{}{}
|
||||
allocList = append(allocList, f)
|
||||
|
||||
// Add all callees to the worklist.
|
||||
for _, use := range getUses(f) {
|
||||
if use.IsACallInst().IsNil() {
|
||||
// TODO: function pointers
|
||||
panic("allocating function " + f.Name() + " used as function pointer")
|
||||
}
|
||||
parent := use.InstructionParent().Parent()
|
||||
for i := 0; i < use.OperandsCount()-1; i++ {
|
||||
if use.Operand(i) == f {
|
||||
// TODO: function pointers
|
||||
panic("allocating function " + f.Name() + " used as function pointer in " + parent.Name())
|
||||
}
|
||||
}
|
||||
worklist = append(worklist, parent)
|
||||
}
|
||||
}
|
||||
|
||||
i8ptrPtrType := llvm.PointerType(c.i8ptrType, 0)
|
||||
gcrootType := llvm.FunctionType(c.ctx.VoidType(), []llvm.Type{i8ptrPtrType, c.i8ptrType}, false)
|
||||
gcroot := llvm.AddFunction(c.mod, "llvm.gcroot", gcrootType)
|
||||
|
||||
// Process every function that needs to save pointers to the shadow stack.
|
||||
for _, fn := range allocList {
|
||||
if fn == alloc {
|
||||
// runtime.alloc itself should not be treated this way, it is a
|
||||
// special case.
|
||||
continue
|
||||
}
|
||||
|
||||
// Check all instructions in this function and see whether the value
|
||||
// needs to be kept on the shadow stack.
|
||||
var values []llvm.Value // values to be kept in the shadow stack
|
||||
for bb := fn.EntryBasicBlock(); !bb.IsNil(); bb = llvm.NextBasicBlock(bb) {
|
||||
for inst := bb.FirstInstruction(); !inst.IsNil(); inst = llvm.NextInstruction(inst) {
|
||||
if !typeHasPointer(inst.Type()) {
|
||||
// This instruction does not result in a pointer value.
|
||||
continue
|
||||
}
|
||||
// Check whether any of the uses may occur after a call to
|
||||
// runtime.alloca. For example, if there are no call
|
||||
// instructions between the definition and the use, then the
|
||||
// pointer does not have to be stored in the shadow stack.
|
||||
for _, use := range getUses(inst) {
|
||||
if crossesAllocatingInst(inst, use, allocSet) {
|
||||
values = append(values, inst)
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
if len(values) == 0 {
|
||||
// The children of this function do allocations, but there is
|
||||
// nothing to keep in a stack frame for this function.
|
||||
continue
|
||||
}
|
||||
fn.SetGC("shadow-stack")
|
||||
|
||||
// Convert all values to be kept in the shadow stack to actually be in
|
||||
// the shadow stack.
|
||||
firstInst := fn.EntryBasicBlock().FirstInstruction()
|
||||
for _, value := range values {
|
||||
valueUses := getUses(value)
|
||||
c.builder.SetInsertPointBefore(firstInst)
|
||||
alloca := c.builder.CreateAlloca(value.Type(), "gcroot.value")
|
||||
c.builder.SetInsertPointBefore(llvm.NextInstruction(value))
|
||||
c.builder.CreateStore(value, alloca)
|
||||
metadata := c.gcTypeMetadata(alloca.Type().ElementType())
|
||||
allocaCast := alloca
|
||||
if alloca.Type() != i8ptrPtrType {
|
||||
allocaCast = c.builder.CreateBitCast(alloca, i8ptrPtrType, "")
|
||||
}
|
||||
c.builder.CreateCall(gcroot, []llvm.Value{allocaCast, metadata}, "")
|
||||
for _, use := range valueUses {
|
||||
c.builder.SetInsertPointBefore(use)
|
||||
load := c.builder.CreateLoad(alloca, "")
|
||||
for i := 0; i < use.OperandsCount(); i++ {
|
||||
if use.Operand(i) == value {
|
||||
use.SetOperand(i, load)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
println(c.IR())
|
||||
}
|
||||
|
||||
// typeHasPointer returns true if (and only if) the given type contains a
|
||||
// pointer value.
|
||||
func typeHasPointer(typ llvm.Type) bool {
|
||||
switch typ.TypeKind() {
|
||||
case llvm.PointerTypeKind:
|
||||
return true
|
||||
case llvm.ArrayTypeKind, llvm.VectorTypeKind:
|
||||
return typeHasPointer(typ.ElementType())
|
||||
case llvm.StructTypeKind:
|
||||
return false
|
||||
for _, subtyp := range typ.StructElementTypes() {
|
||||
if typeHasPointer(subtyp) {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
// gcTypeMetadata returns a pointer value to be used in the llvm.gcroot
|
||||
// intrinsic. It is either a null pointer or a number which is the number of
|
||||
// words in the stack slot for this value.
|
||||
func (c *Compiler) gcTypeMetadata(typ llvm.Type) llvm.Value {
|
||||
if typ.TypeKind() == llvm.PointerTypeKind {
|
||||
// Simple pointer. This is a common case, so signal this fact by setting
|
||||
// the pointer to null.
|
||||
return llvm.ConstPointerNull(c.i8ptrType)
|
||||
}
|
||||
if typ.TypeKind() == llvm.StructTypeKind {
|
||||
// Check for structs that only contain a pointer at the start.
|
||||
// We can pretend that such structs are a simple pointer, as the GC only
|
||||
// needs to read the first word.
|
||||
subTypes := typ.StructElementTypes()
|
||||
onlyFirstPointer := subTypes[0].TypeKind() == llvm.PointerTypeKind
|
||||
for _, subType := range subTypes[1:] {
|
||||
if typeHasPointer(subType) {
|
||||
onlyFirstPointer = false
|
||||
}
|
||||
}
|
||||
if onlyFirstPointer {
|
||||
// Types like string and slice.
|
||||
return llvm.ConstPointerNull(c.i8ptrType)
|
||||
}
|
||||
}
|
||||
allocaSize := c.targetData.TypeAllocSize(typ)
|
||||
pointerAlignment := uint64(c.targetData.PrefTypeAlignment(c.i8ptrType))
|
||||
numWords := allocaSize / pointerAlignment
|
||||
// TODO: only return the number until all pointers are included in this
|
||||
// struct, not more.
|
||||
metadata := llvm.ConstIntToPtr(llvm.ConstInt(c.uintptrType, numWords, false), c.i8ptrType)
|
||||
return metadata
|
||||
}
|
||||
|
||||
// crossesAllocatingInst returns true if the given value may be used across a
|
||||
// call to runtime.alloc. This check is very conservative.
|
||||
func crossesAllocatingInst(from, to llvm.Value, allocSet map[llvm.Value]struct{}) bool {
|
||||
if from.InstructionParent() != to.InstructionParent() {
|
||||
// Don't try to check the CFG, conservatively assume there is an alloca
|
||||
// in between these instructions.
|
||||
return true
|
||||
}
|
||||
for inst := llvm.NextInstruction(from); inst != to; inst = llvm.NextInstruction(inst) {
|
||||
if inst.IsACallInst().IsNil() {
|
||||
// Not a call instruction thus not an alloca instruction.
|
||||
continue
|
||||
}
|
||||
if _, ok := allocSet[inst.CalledValue()]; ok {
|
||||
// This call is to a function that may do an allocation, or is even
|
||||
// runtime.alloc itself.
|
||||
// TODO: function pointers
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
-106
@@ -1,106 +0,0 @@
|
||||
package compiler
|
||||
|
||||
// This file provides IR transformations necessary for precise and portable
|
||||
// garbage collectors.
|
||||
|
||||
import (
|
||||
"go/token"
|
||||
|
||||
"golang.org/x/tools/go/ssa"
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
// trackExpr inserts pointer tracking intrinsics for the GC if the expression is
|
||||
// one of the expressions that need this.
|
||||
func (c *Compiler) trackExpr(frame *Frame, expr ssa.Value, value llvm.Value) {
|
||||
// There are uses of this expression, Make sure the pointers
|
||||
// are tracked during GC.
|
||||
switch expr := expr.(type) {
|
||||
case *ssa.Alloc, *ssa.MakeChan, *ssa.MakeMap:
|
||||
// These values are always of pointer type in IR.
|
||||
c.trackPointer(value)
|
||||
case *ssa.Call, *ssa.Convert, *ssa.MakeClosure, *ssa.MakeInterface, *ssa.MakeSlice, *ssa.Next:
|
||||
if !value.IsNil() {
|
||||
c.trackValue(value)
|
||||
}
|
||||
case *ssa.Select:
|
||||
if alloca, ok := frame.selectRecvBuf[expr]; ok {
|
||||
if alloca.IsAUndefValue().IsNil() {
|
||||
c.trackPointer(alloca)
|
||||
}
|
||||
}
|
||||
case *ssa.UnOp:
|
||||
switch expr.Op {
|
||||
case token.MUL:
|
||||
// Pointer dereference.
|
||||
c.trackValue(value)
|
||||
case token.ARROW:
|
||||
// Channel receive operator.
|
||||
// It's not necessary to look at commaOk here, because in that
|
||||
// case it's just an aggregate and trackValue will extract the
|
||||
// pointer in there (if there is one).
|
||||
c.trackValue(value)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// trackValue locates pointers in a value (possibly an aggregate) and tracks the
|
||||
// individual pointers
|
||||
func (c *Compiler) trackValue(value llvm.Value) {
|
||||
typ := value.Type()
|
||||
switch typ.TypeKind() {
|
||||
case llvm.PointerTypeKind:
|
||||
c.trackPointer(value)
|
||||
case llvm.StructTypeKind:
|
||||
if !typeHasPointers(typ) {
|
||||
return
|
||||
}
|
||||
numElements := typ.StructElementTypesCount()
|
||||
for i := 0; i < numElements; i++ {
|
||||
subValue := c.builder.CreateExtractValue(value, i, "")
|
||||
c.trackValue(subValue)
|
||||
}
|
||||
case llvm.ArrayTypeKind:
|
||||
if !typeHasPointers(typ) {
|
||||
return
|
||||
}
|
||||
numElements := typ.ArrayLength()
|
||||
for i := 0; i < numElements; i++ {
|
||||
subValue := c.builder.CreateExtractValue(value, i, "")
|
||||
c.trackValue(subValue)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// trackPointer creates a call to runtime.trackPointer, bitcasting the poitner
|
||||
// first if needed. The input value must be of LLVM pointer type.
|
||||
func (c *Compiler) trackPointer(value llvm.Value) {
|
||||
if value.Type() != c.i8ptrType {
|
||||
value = c.builder.CreateBitCast(value, c.i8ptrType, "")
|
||||
}
|
||||
c.createRuntimeCall("trackPointer", []llvm.Value{value}, "")
|
||||
}
|
||||
|
||||
// typeHasPointers returns whether this type is a pointer or contains pointers.
|
||||
// If the type is an aggregate type, it will check whether there is a pointer
|
||||
// inside.
|
||||
func typeHasPointers(t llvm.Type) bool {
|
||||
switch t.TypeKind() {
|
||||
case llvm.PointerTypeKind:
|
||||
return true
|
||||
case llvm.StructTypeKind:
|
||||
for _, subType := range t.StructElementTypes() {
|
||||
if typeHasPointers(subType) {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
case llvm.ArrayTypeKind:
|
||||
if typeHasPointers(t.ElementType()) {
|
||||
return true
|
||||
}
|
||||
return false
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
File diff suppressed because it is too large
Load Diff
@@ -1,138 +0,0 @@
|
||||
package compiler
|
||||
|
||||
// This file implements the 'go' keyword to start a new goroutine. See
|
||||
// goroutine-lowering.go for more details.
|
||||
|
||||
import "tinygo.org/x/go-llvm"
|
||||
|
||||
// emitStartGoroutine starts a new goroutine with the provided function pointer
|
||||
// and parameters.
|
||||
// In general, you should pass all regular parameters plus the context parameter.
|
||||
// There is one exception: the task-based scheduler needs to have the function
|
||||
// pointer passed in as a parameter too in addition to the context.
|
||||
//
|
||||
// Because a go statement doesn't return anything, return undef.
|
||||
func (c *Compiler) emitStartGoroutine(funcPtr llvm.Value, params []llvm.Value) llvm.Value {
|
||||
switch c.Scheduler() {
|
||||
case "tasks":
|
||||
paramBundle := c.emitPointerPack(params)
|
||||
paramBundle = c.builder.CreatePtrToInt(paramBundle, c.uintptrType, "")
|
||||
|
||||
calleeValue := c.createGoroutineStartWrapper(funcPtr)
|
||||
c.createRuntimeCall("startGoroutine", []llvm.Value{calleeValue, paramBundle}, "")
|
||||
case "coroutines":
|
||||
// We roundtrip through runtime.makeGoroutine as a signal (to find these
|
||||
// calls) and to break any optimizations LLVM will try to do: they are
|
||||
// invalid if we called this as a regular function to be updated later.
|
||||
calleeValue := c.builder.CreatePtrToInt(funcPtr, c.uintptrType, "")
|
||||
calleeValue = c.createRuntimeCall("makeGoroutine", []llvm.Value{calleeValue}, "")
|
||||
calleeValue = c.builder.CreateIntToPtr(calleeValue, funcPtr.Type(), "")
|
||||
c.createCall(calleeValue, append(params, llvm.ConstPointerNull(c.i8ptrType)), "")
|
||||
default:
|
||||
panic("unreachable")
|
||||
}
|
||||
return llvm.Undef(funcPtr.Type().ElementType().ReturnType())
|
||||
}
|
||||
|
||||
// createGoroutineStartWrapper creates a wrapper for the task-based
|
||||
// implementation of goroutines. For example, to call a function like this:
|
||||
//
|
||||
// func add(x, y int) int { ... }
|
||||
//
|
||||
// It creates a wrapper like this:
|
||||
//
|
||||
// func add$gowrapper(ptr *unsafe.Pointer) {
|
||||
// args := (*struct{
|
||||
// x, y int
|
||||
// })(ptr)
|
||||
// add(args.x, args.y)
|
||||
// }
|
||||
//
|
||||
// This is useful because the task-based goroutine start implementation only
|
||||
// allows a single (pointer) argument to the newly started goroutine. Also, it
|
||||
// ignores the return value because newly started goroutines do not have a
|
||||
// return value.
|
||||
func (c *Compiler) createGoroutineStartWrapper(fn llvm.Value) llvm.Value {
|
||||
var wrapper llvm.Value
|
||||
|
||||
if !fn.IsAFunction().IsNil() {
|
||||
// See whether this wrapper has already been created. If so, return it.
|
||||
name := fn.Name()
|
||||
wrapper = c.mod.NamedFunction(name + "$gowrapper")
|
||||
if !wrapper.IsNil() {
|
||||
return c.builder.CreatePtrToInt(wrapper, c.uintptrType, "")
|
||||
}
|
||||
|
||||
// Save the current position in the IR builder.
|
||||
currentBlock := c.builder.GetInsertBlock()
|
||||
defer c.builder.SetInsertPointAtEnd(currentBlock)
|
||||
|
||||
// Create the wrapper.
|
||||
wrapperType := llvm.FunctionType(c.ctx.VoidType(), []llvm.Type{c.i8ptrType}, false)
|
||||
wrapper = llvm.AddFunction(c.mod, name+"$gowrapper", wrapperType)
|
||||
wrapper.SetLinkage(llvm.PrivateLinkage)
|
||||
wrapper.SetUnnamedAddr(true)
|
||||
entry := c.ctx.AddBasicBlock(wrapper, "entry")
|
||||
c.builder.SetInsertPointAtEnd(entry)
|
||||
|
||||
// Create the list of params for the call.
|
||||
paramTypes := fn.Type().ElementType().ParamTypes()
|
||||
params := c.emitPointerUnpack(wrapper.Param(0), paramTypes[:len(paramTypes)-1])
|
||||
params = append(params, llvm.Undef(c.i8ptrType))
|
||||
|
||||
// Create the call.
|
||||
c.builder.CreateCall(fn, params, "")
|
||||
|
||||
} else {
|
||||
// For a function pointer like this:
|
||||
//
|
||||
// var funcPtr func(x, y int) int
|
||||
//
|
||||
// A wrapper like the following is created:
|
||||
//
|
||||
// func .gowrapper(ptr *unsafe.Pointer) {
|
||||
// args := (*struct{
|
||||
// x, y int
|
||||
// fn func(x, y int) int
|
||||
// })(ptr)
|
||||
// args.fn(x, y)
|
||||
// }
|
||||
//
|
||||
// With a bit of luck, identical wrapper functions like these can be
|
||||
// merged into one.
|
||||
|
||||
// Save the current position in the IR builder.
|
||||
currentBlock := c.builder.GetInsertBlock()
|
||||
defer c.builder.SetInsertPointAtEnd(currentBlock)
|
||||
|
||||
// Create the wrapper.
|
||||
wrapperType := llvm.FunctionType(c.ctx.VoidType(), []llvm.Type{c.i8ptrType}, false)
|
||||
wrapper = llvm.AddFunction(c.mod, ".gowrapper", wrapperType)
|
||||
wrapper.SetLinkage(llvm.InternalLinkage)
|
||||
wrapper.SetUnnamedAddr(true)
|
||||
entry := c.ctx.AddBasicBlock(wrapper, "entry")
|
||||
c.builder.SetInsertPointAtEnd(entry)
|
||||
|
||||
// Get the list of parameters, with the extra parameters at the end.
|
||||
paramTypes := fn.Type().ElementType().ParamTypes()
|
||||
paramTypes[len(paramTypes)-1] = fn.Type() // the last element is the function pointer
|
||||
params := c.emitPointerUnpack(wrapper.Param(0), paramTypes)
|
||||
|
||||
// Get the function pointer.
|
||||
fnPtr := params[len(params)-1]
|
||||
|
||||
// Ignore the last param, which isn't used anymore.
|
||||
// TODO: avoid this extra "parent handle" parameter in most functions.
|
||||
params[len(params)-1] = llvm.Undef(c.i8ptrType)
|
||||
|
||||
// Create the call.
|
||||
c.builder.CreateCall(fnPtr, params, "")
|
||||
}
|
||||
|
||||
// Finish the function. Every basic block must end in a terminator, and
|
||||
// because goroutines never return a value we can simply return void.
|
||||
c.builder.CreateRetVoid()
|
||||
|
||||
// Return a ptrtoint of the wrapper, not the function itself.
|
||||
return c.builder.CreatePtrToInt(wrapper, c.uintptrType, "")
|
||||
}
|
||||
@@ -1,164 +0,0 @@
|
||||
package compiler
|
||||
|
||||
// This file implements inline asm support by calling special functions.
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"go/constant"
|
||||
"regexp"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"golang.org/x/tools/go/ssa"
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
// This is a compiler builtin, which reads the given register by name:
|
||||
//
|
||||
// func ReadRegister(name string) uintptr
|
||||
//
|
||||
// The register name must be a constant, for example "sp".
|
||||
func (c *Compiler) emitReadRegister(name string, args []ssa.Value) (llvm.Value, error) {
|
||||
fnType := llvm.FunctionType(c.uintptrType, []llvm.Type{}, false)
|
||||
regname := constant.StringVal(args[0].(*ssa.Const).Value)
|
||||
var asm string
|
||||
switch name {
|
||||
case "device/arm.ReadRegister":
|
||||
asm = "mov $0, " + regname
|
||||
case "device/riscv.ReadRegister":
|
||||
asm = "mv $0, " + regname
|
||||
default:
|
||||
panic("unknown architecture")
|
||||
}
|
||||
target := llvm.InlineAsm(fnType, asm, "=r", false, false, 0)
|
||||
return c.builder.CreateCall(target, nil, ""), nil
|
||||
}
|
||||
|
||||
// This is a compiler builtin, which emits a piece of inline assembly with no
|
||||
// operands or return values. It is useful for trivial instructions, like wfi in
|
||||
// ARM or sleep in AVR.
|
||||
//
|
||||
// func Asm(asm string)
|
||||
//
|
||||
// The provided assembly must be a constant.
|
||||
func (c *Compiler) emitAsm(args []ssa.Value) (llvm.Value, error) {
|
||||
// Magic function: insert inline assembly instead of calling it.
|
||||
fnType := llvm.FunctionType(c.ctx.VoidType(), []llvm.Type{}, false)
|
||||
asm := constant.StringVal(args[0].(*ssa.Const).Value)
|
||||
target := llvm.InlineAsm(fnType, asm, "", true, false, 0)
|
||||
return c.builder.CreateCall(target, nil, ""), nil
|
||||
}
|
||||
|
||||
// This is a compiler builtin, which allows assembly to be called in a flexible
|
||||
// way.
|
||||
//
|
||||
// func AsmFull(asm string, regs map[string]interface{})
|
||||
//
|
||||
// The asm parameter must be a constant string. The regs parameter must be
|
||||
// provided immediately. For example:
|
||||
//
|
||||
// arm.AsmFull(
|
||||
// "str {value}, {result}",
|
||||
// map[string]interface{}{
|
||||
// "value": 1
|
||||
// "result": &dest,
|
||||
// })
|
||||
func (c *Compiler) emitAsmFull(frame *Frame, instr *ssa.CallCommon) (llvm.Value, error) {
|
||||
asmString := constant.StringVal(instr.Args[0].(*ssa.Const).Value)
|
||||
registers := map[string]llvm.Value{}
|
||||
registerMap := instr.Args[1].(*ssa.MakeMap)
|
||||
for _, r := range *registerMap.Referrers() {
|
||||
switch r := r.(type) {
|
||||
case *ssa.DebugRef:
|
||||
// ignore
|
||||
case *ssa.MapUpdate:
|
||||
if r.Block() != registerMap.Block() {
|
||||
return llvm.Value{}, c.makeError(instr.Pos(), "register value map must be created in the same basic block")
|
||||
}
|
||||
key := constant.StringVal(r.Key.(*ssa.Const).Value)
|
||||
//println("value:", r.Value.(*ssa.MakeInterface).X.String())
|
||||
registers[key] = c.getValue(frame, r.Value.(*ssa.MakeInterface).X)
|
||||
case *ssa.Call:
|
||||
if r.Common() == instr {
|
||||
break
|
||||
}
|
||||
default:
|
||||
return llvm.Value{}, c.makeError(instr.Pos(), "don't know how to handle argument to inline assembly: "+r.String())
|
||||
}
|
||||
}
|
||||
// TODO: handle dollar signs in asm string
|
||||
registerNumbers := map[string]int{}
|
||||
var err error
|
||||
argTypes := []llvm.Type{}
|
||||
args := []llvm.Value{}
|
||||
constraints := []string{}
|
||||
asmString = regexp.MustCompile("\\{[a-zA-Z]+\\}").ReplaceAllStringFunc(asmString, func(s string) string {
|
||||
// TODO: skip strings like {r4} etc. that look like ARM push/pop
|
||||
// instructions.
|
||||
name := s[1 : len(s)-1]
|
||||
if _, ok := registers[name]; !ok {
|
||||
if err == nil {
|
||||
err = c.makeError(instr.Pos(), "unknown register name: "+name)
|
||||
}
|
||||
return s
|
||||
}
|
||||
if _, ok := registerNumbers[name]; !ok {
|
||||
registerNumbers[name] = len(registerNumbers)
|
||||
argTypes = append(argTypes, registers[name].Type())
|
||||
args = append(args, registers[name])
|
||||
switch registers[name].Type().TypeKind() {
|
||||
case llvm.IntegerTypeKind:
|
||||
constraints = append(constraints, "r")
|
||||
case llvm.PointerTypeKind:
|
||||
constraints = append(constraints, "*m")
|
||||
default:
|
||||
err = c.makeError(instr.Pos(), "unknown type in inline assembly for value: "+name)
|
||||
return s
|
||||
}
|
||||
}
|
||||
return fmt.Sprintf("${%v}", registerNumbers[name])
|
||||
})
|
||||
if err != nil {
|
||||
return llvm.Value{}, err
|
||||
}
|
||||
fnType := llvm.FunctionType(c.ctx.VoidType(), argTypes, false)
|
||||
target := llvm.InlineAsm(fnType, asmString, strings.Join(constraints, ","), true, false, 0)
|
||||
return c.builder.CreateCall(target, args, ""), nil
|
||||
}
|
||||
|
||||
// This is a compiler builtin which emits an inline SVCall instruction. It can
|
||||
// be one of:
|
||||
//
|
||||
// func SVCall0(num uintptr) uintptr
|
||||
// func SVCall1(num uintptr, a1 interface{}) uintptr
|
||||
// func SVCall2(num uintptr, a1, a2 interface{}) uintptr
|
||||
// func SVCall3(num uintptr, a1, a2, a3 interface{}) uintptr
|
||||
// func SVCall4(num uintptr, a1, a2, a3, a4 interface{}) uintptr
|
||||
//
|
||||
// The num parameter must be a constant. All other parameters may be any scalar
|
||||
// value supported by LLVM inline assembly.
|
||||
func (c *Compiler) emitSVCall(frame *Frame, args []ssa.Value) (llvm.Value, error) {
|
||||
num, _ := constant.Uint64Val(args[0].(*ssa.Const).Value)
|
||||
llvmArgs := []llvm.Value{}
|
||||
argTypes := []llvm.Type{}
|
||||
asm := "svc #" + strconv.FormatUint(num, 10)
|
||||
constraints := "={r0}"
|
||||
for i, arg := range args[1:] {
|
||||
arg = arg.(*ssa.MakeInterface).X
|
||||
if i == 0 {
|
||||
constraints += ",0"
|
||||
} else {
|
||||
constraints += ",{r" + strconv.Itoa(i) + "}"
|
||||
}
|
||||
llvmValue := c.getValue(frame, arg)
|
||||
llvmArgs = append(llvmArgs, llvmValue)
|
||||
argTypes = append(argTypes, llvmValue.Type())
|
||||
}
|
||||
// Implement the ARM calling convention by marking r1-r3 as
|
||||
// clobbered. r0 is used as an output register so doesn't have to be
|
||||
// marked as clobbered.
|
||||
constraints += ",~{r1},~{r2},~{r3}"
|
||||
fnType := llvm.FunctionType(c.uintptrType, argTypes, false)
|
||||
target := llvm.InlineAsm(fnType, asm, constraints, true, false, 0)
|
||||
return c.builder.CreateCall(target, llvmArgs, ""), nil
|
||||
}
|
||||
@@ -1,9 +1,10 @@
|
||||
package transform
|
||||
package compiler
|
||||
|
||||
// This file provides function to lower interface intrinsics to their final LLVM
|
||||
// form, optimizing them in the process.
|
||||
//
|
||||
// During SSA construction, the following pseudo-calls are created:
|
||||
// runtime.makeInterface(typecode, methodSet)
|
||||
// runtime.typeAssert(typecode, assertedType)
|
||||
// runtime.interfaceImplements(typecode, interfaceMethodSet)
|
||||
// runtime.interfaceMethod(typecode, interfaceMethodSet, signature)
|
||||
@@ -13,14 +14,24 @@ package transform
|
||||
//
|
||||
// This pass lowers the above functions to their final form:
|
||||
//
|
||||
// makeInterface:
|
||||
// Replaced with a constant typecode.
|
||||
//
|
||||
// typeAssert:
|
||||
// Replaced with an icmp instruction so it can be directly used in a type
|
||||
// switch. This is very easy to optimize for LLVM: it will often translate a
|
||||
// type switch into a regular switch statement.
|
||||
// When this type assert is not possible (the type is never used in an
|
||||
// interface with makeInterface), this call is replaced with a constant
|
||||
// false to optimize the type assert away completely.
|
||||
//
|
||||
// interfaceImplements:
|
||||
// This call is translated into a call that checks whether the underlying
|
||||
// type is one of the types implementing this interface.
|
||||
// When there is only one type implementing this interface, the check is
|
||||
// replaced with a simple icmp instruction, just like a type assert.
|
||||
// When there is no type at all that implements this interface, it is
|
||||
// replaced with a constant false to optimize it completely.
|
||||
//
|
||||
// interfaceMethod:
|
||||
// This call is replaced with a call to a function that calls the
|
||||
@@ -38,8 +49,7 @@ import (
|
||||
"sort"
|
||||
"strings"
|
||||
|
||||
"github.com/tinygo-org/tinygo/compiler/llvmutil"
|
||||
"tinygo.org/x/go-llvm"
|
||||
"github.com/aykevl/go-llvm"
|
||||
)
|
||||
|
||||
// signatureInfo is a Go signature of an interface method. It does not represent
|
||||
@@ -94,6 +104,15 @@ func (t *typeInfo) getMethod(signature *signatureInfo) *methodInfo {
|
||||
panic("could not find method")
|
||||
}
|
||||
|
||||
// id returns the fully-qualified type name including import path, removing the
|
||||
// $type suffix.
|
||||
func (t *typeInfo) id() string {
|
||||
if !strings.HasSuffix(t.name, "$type") {
|
||||
panic("concrete type does not have $type suffix: " + t.name)
|
||||
}
|
||||
return t.name[:len(t.name)-len("$type")]
|
||||
}
|
||||
|
||||
// typeInfoSlice implements sort.Slice, sorting the most commonly used types
|
||||
// first.
|
||||
type typeInfoSlice []*typeInfo
|
||||
@@ -134,64 +153,47 @@ func (itf *interfaceInfo) id() string {
|
||||
// pass has been implemented as an object type because of its complexity, but
|
||||
// should be seen as a regular function call (see LowerInterfaces).
|
||||
type lowerInterfacesPass struct {
|
||||
mod llvm.Module
|
||||
builder llvm.Builder
|
||||
ctx llvm.Context
|
||||
uintptrType llvm.Type
|
||||
types map[string]*typeInfo
|
||||
signatures map[string]*signatureInfo
|
||||
interfaces map[string]*interfaceInfo
|
||||
*Compiler
|
||||
types map[string]*typeInfo
|
||||
signatures map[string]*signatureInfo
|
||||
interfaces map[string]*interfaceInfo
|
||||
}
|
||||
|
||||
// LowerInterfaces lowers all intermediate interface calls and globals that are
|
||||
// emitted by the compiler as higher-level intrinsics. They need some lowering
|
||||
// before LLVM can work on them. This is done so that a few cleanup passes can
|
||||
// run before assigning the final type codes.
|
||||
func LowerInterfaces(mod llvm.Module) {
|
||||
// Lower all interface functions. They are emitted by the compiler as
|
||||
// higher-level intrinsics that need some lowering before LLVM can work on them.
|
||||
// This is done so that a few cleanup passes can run before assigning the final
|
||||
// type codes.
|
||||
func (c *Compiler) LowerInterfaces() {
|
||||
p := &lowerInterfacesPass{
|
||||
mod: mod,
|
||||
builder: mod.Context().NewBuilder(),
|
||||
ctx: mod.Context(),
|
||||
uintptrType: mod.Context().IntType(llvm.NewTargetData(mod.DataLayout()).PointerSize() * 8),
|
||||
types: make(map[string]*typeInfo),
|
||||
signatures: make(map[string]*signatureInfo),
|
||||
interfaces: make(map[string]*interfaceInfo),
|
||||
Compiler: c,
|
||||
types: make(map[string]*typeInfo),
|
||||
signatures: make(map[string]*signatureInfo),
|
||||
interfaces: make(map[string]*interfaceInfo),
|
||||
}
|
||||
p.run()
|
||||
}
|
||||
|
||||
// run runs the pass itself.
|
||||
func (p *lowerInterfacesPass) run() {
|
||||
// Collect all type codes.
|
||||
typecodeIDPtr := llvm.PointerType(p.mod.GetTypeByName("runtime.typecodeID"), 0)
|
||||
typeInInterfacePtr := llvm.PointerType(p.mod.GetTypeByName("runtime.typeInInterface"), 0)
|
||||
var typesInInterfaces []llvm.Value
|
||||
for global := p.mod.FirstGlobal(); !global.IsNil(); global = llvm.NextGlobal(global) {
|
||||
switch global.Type() {
|
||||
case typecodeIDPtr:
|
||||
// Retrieve Go type information based on an opaque global variable.
|
||||
// Only the name of the global is relevant, the object itself is
|
||||
// discarded afterwards.
|
||||
name := global.Name()
|
||||
t := &typeInfo{
|
||||
name: name,
|
||||
typecode: global,
|
||||
}
|
||||
p.types[name] = t
|
||||
case typeInInterfacePtr:
|
||||
// Count per type how often it is put in an interface. Also, collect
|
||||
// all methods this type has (if it is named).
|
||||
typesInInterfaces = append(typesInInterfaces, global)
|
||||
initializer := global.Initializer()
|
||||
typecode := llvm.ConstExtractValue(initializer, []uint32{0})
|
||||
methodSet := llvm.ConstExtractValue(initializer, []uint32{1})
|
||||
t := p.types[typecode.Name()]
|
||||
p.addTypeMethods(t, methodSet)
|
||||
|
||||
// Count the number of MakeInterface instructions, for sorting the
|
||||
// typecodes later.
|
||||
t.countMakeInterfaces += len(getUses(global))
|
||||
// Count per type how often it is put in an interface. Also, collect all
|
||||
// methods this type has (if it is named).
|
||||
makeInterface := p.mod.NamedFunction("runtime.makeInterface")
|
||||
makeInterfaceUses := getUses(makeInterface)
|
||||
for _, use := range makeInterfaceUses {
|
||||
typecode := use.Operand(0)
|
||||
name := typecode.Name()
|
||||
if t, ok := p.types[name]; !ok {
|
||||
// This is the first time this type has been seen, add it to the
|
||||
// list of types.
|
||||
t = p.addType(typecode)
|
||||
p.addTypeMethods(t, use.Operand(1))
|
||||
} else {
|
||||
p.addTypeMethods(t, use.Operand(1))
|
||||
}
|
||||
|
||||
// Count the number of MakeInterface instructions, for sorting the
|
||||
// typecodes later.
|
||||
p.types[name].countMakeInterfaces++
|
||||
}
|
||||
|
||||
// Count per type how often it is type asserted on (e.g. in a switch
|
||||
@@ -201,6 +203,9 @@ func (p *lowerInterfacesPass) run() {
|
||||
for _, use := range typeAssertUses {
|
||||
typecode := use.Operand(1)
|
||||
name := typecode.Name()
|
||||
if _, ok := p.types[name]; !ok {
|
||||
p.addType(typecode)
|
||||
}
|
||||
p.types[name].countTypeAsserts++
|
||||
}
|
||||
|
||||
@@ -290,6 +295,16 @@ func (p *lowerInterfacesPass) run() {
|
||||
typecode := use.Operand(0)
|
||||
signature := p.signatures[use.Operand(2).Name()]
|
||||
|
||||
// If the interface was created in the same function, we can insert a
|
||||
// direct call. This may not happen often but it is an easy
|
||||
// optimization so let's do it anyway.
|
||||
if !typecode.IsACallInst().IsNil() && typecode.CalledValue() == makeInterface {
|
||||
name := typecode.Operand(0).Name()
|
||||
typ := p.types[name]
|
||||
p.replaceInvokeWithCall(use, typ, signature)
|
||||
continue
|
||||
}
|
||||
|
||||
methodSet := use.Operand(1).Operand(0) // global variable
|
||||
itf := p.interfaces[methodSet.Name()]
|
||||
if len(itf.types) == 0 {
|
||||
@@ -298,7 +313,7 @@ func (p *lowerInterfacesPass) run() {
|
||||
// interface value should already have returned false.
|
||||
// Replace the function pointer with undef (which will then be
|
||||
// called), indicating to the optimizer this code is unreachable.
|
||||
use.ReplaceAllUsesWith(llvm.Undef(p.uintptrType))
|
||||
use.ReplaceAllUsesWith(llvm.Undef(p.i8ptrType))
|
||||
use.EraseFromParentAsInstruction()
|
||||
} else if len(itf.types) == 1 {
|
||||
// There is only one implementation of the given type.
|
||||
@@ -308,12 +323,12 @@ func (p *lowerInterfacesPass) run() {
|
||||
// There are multiple types implementing this interface, thus there
|
||||
// are multiple possible functions to call. Delegate calling the
|
||||
// right function to a special wrapper function.
|
||||
inttoptrs := getUses(use)
|
||||
if len(inttoptrs) != 1 || inttoptrs[0].IsAIntToPtrInst().IsNil() {
|
||||
panic("expected exactly one inttoptr use of runtime.interfaceMethod")
|
||||
bitcasts := getUses(use)
|
||||
if len(bitcasts) != 1 || bitcasts[0].IsABitCastInst().IsNil() {
|
||||
panic("expected exactly one bitcast use of runtime.interfaceMethod")
|
||||
}
|
||||
inttoptr := inttoptrs[0]
|
||||
calls := getUses(inttoptr)
|
||||
bitcast := bitcasts[0]
|
||||
calls := getUses(bitcast)
|
||||
if len(calls) != 1 || calls[0].IsACallInst().IsNil() {
|
||||
panic("expected exactly one call use of runtime.interfaceMethod")
|
||||
}
|
||||
@@ -334,14 +349,14 @@ func (p *lowerInterfacesPass) run() {
|
||||
// call, after selecting the right concrete type.
|
||||
redirector := p.getInterfaceMethodFunc(itf, signature, call.Type(), paramTypes)
|
||||
|
||||
// Replace the old lookup/inttoptr/call with the new call.
|
||||
// Replace the old lookup/bitcast/call with the new call.
|
||||
p.builder.SetInsertPointBefore(call)
|
||||
retval := p.builder.CreateCall(redirector, append(params, llvm.ConstNull(llvm.PointerType(p.ctx.Int8Type(), 0))), "")
|
||||
retval := p.builder.CreateCall(redirector, params, "")
|
||||
if retval.Type().TypeKind() != llvm.VoidTypeKind {
|
||||
call.ReplaceAllUsesWith(retval)
|
||||
}
|
||||
call.EraseFromParentAsInstruction()
|
||||
inttoptr.EraseFromParentAsInstruction()
|
||||
bitcast.EraseFromParentAsInstruction()
|
||||
use.EraseFromParentAsInstruction()
|
||||
}
|
||||
}
|
||||
@@ -350,16 +365,49 @@ func (p *lowerInterfacesPass) run() {
|
||||
// types, if possible.
|
||||
for _, use := range interfaceImplementsUses {
|
||||
actualType := use.Operand(0)
|
||||
if !actualType.IsACallInst().IsNil() && actualType.CalledValue() == makeInterface {
|
||||
// Type assert is in the same function that creates the interface
|
||||
// value. This means the underlying type is already known so match
|
||||
// on that.
|
||||
// This may not happen often but it is an easy optimization.
|
||||
name := actualType.Operand(0).Name()
|
||||
typ := p.types[name]
|
||||
p.builder.SetInsertPointBefore(use)
|
||||
assertedType := p.builder.CreatePtrToInt(typ.typecode, p.uintptrType, "typeassert.typecode")
|
||||
commaOk := p.builder.CreateICmp(llvm.IntEQ, assertedType, actualType, "typeassert.ok")
|
||||
use.ReplaceAllUsesWith(commaOk)
|
||||
use.EraseFromParentAsInstruction()
|
||||
continue
|
||||
}
|
||||
|
||||
methodSet := use.Operand(1).Operand(0) // global variable
|
||||
itf := p.interfaces[methodSet.Name()]
|
||||
// Create a function that does a type switch on all available types
|
||||
// that implement this interface.
|
||||
fn := p.getInterfaceImplementsFunc(itf)
|
||||
p.builder.SetInsertPointBefore(use)
|
||||
commaOk := p.builder.CreateCall(fn, []llvm.Value{actualType}, "typeassert.ok")
|
||||
use.ReplaceAllUsesWith(commaOk)
|
||||
use.EraseFromParentAsInstruction()
|
||||
if len(itf.types) == 0 {
|
||||
// There are no types implementing this interface, so this assert
|
||||
// can never succeed.
|
||||
// Signal this to the optimizer by branching on constant false. It
|
||||
// should remove the "then" block.
|
||||
use.ReplaceAllUsesWith(llvm.ConstInt(p.ctx.Int1Type(), 0, false))
|
||||
use.EraseFromParentAsInstruction()
|
||||
} else if len(itf.types) == 1 {
|
||||
// There is only one type implementing this interface.
|
||||
// Transform this interface assert into comparison against a
|
||||
// constant.
|
||||
p.builder.SetInsertPointBefore(use)
|
||||
assertedType := p.builder.CreatePtrToInt(itf.types[0].typecode, p.uintptrType, "typeassert.typecode")
|
||||
commaOk := p.builder.CreateICmp(llvm.IntEQ, assertedType, actualType, "typeassert.ok")
|
||||
use.ReplaceAllUsesWith(commaOk)
|
||||
use.EraseFromParentAsInstruction()
|
||||
} else {
|
||||
// There are multiple possible types implementing this interface.
|
||||
// Create a function that does a type switch on all available types
|
||||
// that implement this interface.
|
||||
fn := p.getInterfaceImplementsFunc(itf)
|
||||
p.builder.SetInsertPointBefore(use)
|
||||
commaOk := p.builder.CreateCall(fn, []llvm.Value{actualType}, "typeassert.ok")
|
||||
use.ReplaceAllUsesWith(commaOk)
|
||||
use.EraseFromParentAsInstruction()
|
||||
}
|
||||
}
|
||||
|
||||
// Make a slice of types sorted by frequency of use.
|
||||
@@ -367,7 +415,7 @@ func (p *lowerInterfacesPass) run() {
|
||||
for _, t := range p.types {
|
||||
typeSlice = append(typeSlice, t)
|
||||
}
|
||||
sort.Sort(sort.Reverse(typeSlice))
|
||||
sort.Sort(typeSlice)
|
||||
|
||||
// A type code must fit in 16 bits.
|
||||
if len(typeSlice) >= 1<<16 {
|
||||
@@ -375,16 +423,16 @@ func (p *lowerInterfacesPass) run() {
|
||||
}
|
||||
|
||||
// Assign a type code for each type.
|
||||
assignTypeCodes(p.mod, typeSlice)
|
||||
for i, t := range typeSlice {
|
||||
t.num = uint64(i + 1)
|
||||
}
|
||||
|
||||
// Replace each use of a runtime.typeInInterface with the constant type
|
||||
// code.
|
||||
for _, global := range typesInInterfaces {
|
||||
for _, use := range getUses(global) {
|
||||
t := p.types[llvm.ConstExtractValue(global.Initializer(), []uint32{0}).Name()]
|
||||
typecode := llvm.ConstInt(p.uintptrType, t.num, false)
|
||||
use.ReplaceAllUsesWith(typecode)
|
||||
}
|
||||
// Replace each call to runtime.makeInterface with the constant type code.
|
||||
for _, use := range makeInterfaceUses {
|
||||
global := use.Operand(0)
|
||||
t := p.types[global.Name()]
|
||||
use.ReplaceAllUsesWith(llvm.ConstPtrToInt(t.typecode, p.uintptrType))
|
||||
use.EraseFromParentAsInstruction()
|
||||
}
|
||||
|
||||
// Replace each type assert with an actual type comparison or (if the type
|
||||
@@ -392,8 +440,16 @@ func (p *lowerInterfacesPass) run() {
|
||||
for _, use := range typeAssertUses {
|
||||
actualType := use.Operand(0)
|
||||
assertedTypeGlobal := use.Operand(1)
|
||||
p.builder.SetInsertPointBefore(use)
|
||||
commaOk := p.builder.CreateICmp(llvm.IntEQ, llvm.ConstPtrToInt(assertedTypeGlobal, p.uintptrType), actualType, "typeassert.ok")
|
||||
t := p.types[assertedTypeGlobal.Name()]
|
||||
var commaOk llvm.Value
|
||||
if t.countMakeInterfaces == 0 {
|
||||
// impossible type assert: optimize accordingly
|
||||
commaOk = llvm.ConstInt(llvm.Int1Type(), 0, false)
|
||||
} else {
|
||||
// regular type assert
|
||||
p.builder.SetInsertPointBefore(use)
|
||||
commaOk = p.builder.CreateICmp(llvm.IntEQ, llvm.ConstPtrToInt(assertedTypeGlobal, p.uintptrType), actualType, "typeassert.ok")
|
||||
}
|
||||
use.ReplaceAllUsesWith(commaOk)
|
||||
use.EraseFromParentAsInstruction()
|
||||
}
|
||||
@@ -413,18 +469,12 @@ func (p *lowerInterfacesPass) run() {
|
||||
// numbers.
|
||||
for _, typ := range p.types {
|
||||
for _, use := range getUses(typ.typecode) {
|
||||
if !use.IsAConstantExpr().IsNil() && use.Opcode() == llvm.PtrToInt {
|
||||
if use.IsConstant() && use.Opcode() == llvm.PtrToInt {
|
||||
use.ReplaceAllUsesWith(llvm.ConstInt(p.uintptrType, typ.num, false))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Remove stray runtime.typeInInterface globals. Required for the following
|
||||
// cleanup.
|
||||
for _, global := range typesInInterfaces {
|
||||
global.EraseFromParentAsGlobal()
|
||||
}
|
||||
|
||||
// Remove method sets of types. Unnecessary, but cleans up the IR for
|
||||
// inspection.
|
||||
for _, typ := range p.types {
|
||||
@@ -435,6 +485,19 @@ func (p *lowerInterfacesPass) run() {
|
||||
}
|
||||
}
|
||||
|
||||
// addType retrieves Go type information based on a i16 global variable.
|
||||
// Only the name of the i16 is relevant, the object itself is const-propagated
|
||||
// and discared afterwards.
|
||||
func (p *lowerInterfacesPass) addType(typecode llvm.Value) *typeInfo {
|
||||
name := typecode.Name()
|
||||
t := &typeInfo{
|
||||
name: name,
|
||||
typecode: typecode,
|
||||
}
|
||||
p.types[name] = t
|
||||
return t
|
||||
}
|
||||
|
||||
// addTypeMethods reads the method set of the given type info struct. It
|
||||
// retrieves the signatures and the references to the method functions
|
||||
// themselves for later type<->interface matching.
|
||||
@@ -490,51 +553,22 @@ func (p *lowerInterfacesPass) getSignature(name string) *signatureInfo {
|
||||
return p.signatures[name]
|
||||
}
|
||||
|
||||
// replaceInvokeWithCall replaces a runtime.interfaceMethod + inttoptr with a
|
||||
// replaceInvokeWithCall replaces a runtime.interfaceMethod + bitcast with a
|
||||
// concrete method. This can be done when only one type implements the
|
||||
// interface.
|
||||
func (p *lowerInterfacesPass) replaceInvokeWithCall(use llvm.Value, typ *typeInfo, signature *signatureInfo) {
|
||||
inttoptrs := getUses(use)
|
||||
if len(inttoptrs) != 1 || inttoptrs[0].IsAIntToPtrInst().IsNil() {
|
||||
panic("expected exactly one inttoptr use of runtime.interfaceMethod")
|
||||
bitcasts := getUses(use)
|
||||
if len(bitcasts) != 1 || bitcasts[0].IsABitCastInst().IsNil() {
|
||||
panic("expected exactly one bitcast use of runtime.interfaceMethod")
|
||||
}
|
||||
inttoptr := inttoptrs[0]
|
||||
bitcast := bitcasts[0]
|
||||
function := typ.getMethod(signature).function
|
||||
if inttoptr.Type() == function.Type() {
|
||||
// Easy case: the types are the same. Simply replace the inttoptr
|
||||
// result (which is directly called) with the actual function.
|
||||
inttoptr.ReplaceAllUsesWith(function)
|
||||
} else {
|
||||
// Harder case: the type is not actually the same. Go through each call
|
||||
// (of which there should be only one), extract the receiver params for
|
||||
// this call and replace the call with a direct call to the target
|
||||
// function.
|
||||
for _, call := range getUses(inttoptr) {
|
||||
if call.IsACallInst().IsNil() || call.CalledValue() != inttoptr {
|
||||
panic("expected the inttoptr to be called as a method, this is not a method call")
|
||||
}
|
||||
operands := make([]llvm.Value, call.OperandsCount()-1)
|
||||
for i := range operands {
|
||||
operands[i] = call.Operand(i)
|
||||
}
|
||||
paramTypes := function.Type().ElementType().ParamTypes()
|
||||
receiverParamTypes := paramTypes[:len(paramTypes)-(len(operands)-1)]
|
||||
methodParamTypes := paramTypes[len(paramTypes)-(len(operands)-1):]
|
||||
for i, methodParamType := range methodParamTypes {
|
||||
if methodParamType != operands[i+1].Type() {
|
||||
panic("expected method call param type and function param type to be the same")
|
||||
}
|
||||
}
|
||||
p.builder.SetInsertPointBefore(call)
|
||||
receiverParams := llvmutil.EmitPointerUnpack(p.builder, p.mod, operands[0], receiverParamTypes)
|
||||
result := p.builder.CreateCall(function, append(receiverParams, operands[1:]...), "")
|
||||
if result.Type().TypeKind() != llvm.VoidTypeKind {
|
||||
call.ReplaceAllUsesWith(result)
|
||||
}
|
||||
call.EraseFromParentAsInstruction()
|
||||
}
|
||||
if bitcast.Type() != function.Type() {
|
||||
p.builder.SetInsertPointBefore(use)
|
||||
function = p.builder.CreateBitCast(function, bitcast.Type(), "")
|
||||
}
|
||||
inttoptr.EraseFromParentAsInstruction()
|
||||
bitcast.ReplaceAllUsesWith(function)
|
||||
bitcast.EraseFromParentAsInstruction()
|
||||
use.EraseFromParentAsInstruction()
|
||||
}
|
||||
|
||||
@@ -576,9 +610,9 @@ func (p *lowerInterfacesPass) createInterfaceImplementsFunc(itf *interfaceInfo)
|
||||
// TODO: debug info
|
||||
|
||||
// Create all used basic blocks.
|
||||
entry := p.ctx.AddBasicBlock(fn, "entry")
|
||||
thenBlock := p.ctx.AddBasicBlock(fn, "then")
|
||||
elseBlock := p.ctx.AddBasicBlock(fn, "else")
|
||||
entry := llvm.AddBasicBlock(fn, "entry")
|
||||
thenBlock := llvm.AddBasicBlock(fn, "then")
|
||||
elseBlock := llvm.AddBasicBlock(fn, "else")
|
||||
|
||||
// Add all possible types as cases.
|
||||
p.builder.SetInsertPointAtEnd(entry)
|
||||
@@ -597,9 +631,9 @@ func (p *lowerInterfacesPass) createInterfaceImplementsFunc(itf *interfaceInfo)
|
||||
p.builder.CreateRet(llvm.ConstInt(p.ctx.Int1Type(), 0, false))
|
||||
}
|
||||
|
||||
// getInterfaceMethodFunc returns a thunk for calling a method on an interface.
|
||||
// It only declares the function, createInterfaceMethodFunc actually defines the
|
||||
// function.
|
||||
// getInterfaceMethodFunc return a function that returns a function pointer for
|
||||
// calling a method on an interface. It only declares the function,
|
||||
// createInterfaceMethodFunc actually defines the function.
|
||||
func (p *lowerInterfacesPass) getInterfaceMethodFunc(itf *interfaceInfo, signature *signatureInfo, returnType llvm.Type, params []llvm.Type) llvm.Value {
|
||||
if fn, ok := itf.methodFuncs[signature]; ok {
|
||||
// This function has already been created.
|
||||
@@ -613,10 +647,9 @@ func (p *lowerInterfacesPass) getInterfaceMethodFunc(itf *interfaceInfo, signatu
|
||||
// Construct the function name, which is of the form:
|
||||
// (main.Stringer).String
|
||||
fnName := "(" + itf.id() + ")." + signature.methodName()
|
||||
fnType := llvm.FunctionType(returnType, append(params, llvm.PointerType(p.ctx.Int8Type(), 0)), false)
|
||||
fnType := llvm.FunctionType(returnType, params, false)
|
||||
fn := llvm.AddFunction(p.mod, fnName, fnType)
|
||||
llvm.PrevParam(fn.LastParam()).SetName("actualType")
|
||||
fn.LastParam().SetName("parentHandle")
|
||||
fn.LastParam().SetName("actualType")
|
||||
itf.methodFuncs[signature] = fn
|
||||
return fn
|
||||
}
|
||||
@@ -635,30 +668,30 @@ func (p *lowerInterfacesPass) createInterfaceMethodFunc(itf *interfaceInfo, sign
|
||||
// TODO: debug info
|
||||
|
||||
// Create entry block.
|
||||
entry := p.ctx.AddBasicBlock(fn, "entry")
|
||||
entry := llvm.AddBasicBlock(fn, "entry")
|
||||
|
||||
// Create default block and make it unreachable (which it is, because all
|
||||
// possible types are checked).
|
||||
defaultBlock := p.ctx.AddBasicBlock(fn, "default")
|
||||
defaultBlock := llvm.AddBasicBlock(fn, "default")
|
||||
p.builder.SetInsertPointAtEnd(defaultBlock)
|
||||
p.builder.CreateUnreachable()
|
||||
|
||||
// Create type switch in entry block.
|
||||
p.builder.SetInsertPointAtEnd(entry)
|
||||
actualType := llvm.PrevParam(fn.LastParam())
|
||||
actualType := fn.LastParam()
|
||||
sw := p.builder.CreateSwitch(actualType, defaultBlock, len(itf.types))
|
||||
|
||||
// Collect the params that will be passed to the functions to call.
|
||||
// These params exclude the receiver (which may actually consist of multiple
|
||||
// parts).
|
||||
params := make([]llvm.Value, fn.ParamsCount()-3)
|
||||
params := make([]llvm.Value, fn.ParamsCount()-2)
|
||||
for i := range params {
|
||||
params[i] = fn.Param(i + 1)
|
||||
}
|
||||
|
||||
// Define all possible functions that can be called.
|
||||
for _, typ := range itf.types {
|
||||
bb := p.ctx.AddBasicBlock(fn, typ.name)
|
||||
bb := llvm.AddBasicBlock(fn, typ.id())
|
||||
sw.AddCase(llvm.ConstInt(p.uintptrType, typ.num, false), bb)
|
||||
|
||||
// The function we will redirect to when the interface has this type.
|
||||
+165
-227
@@ -8,12 +8,10 @@ package compiler
|
||||
import (
|
||||
"go/token"
|
||||
"go/types"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"github.com/tinygo-org/tinygo/ir"
|
||||
"github.com/aykevl/go-llvm"
|
||||
"github.com/aykevl/tinygo/ir"
|
||||
"golang.org/x/tools/go/ssa"
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
// parseMakeInterface emits the LLVM IR for the *ssa.MakeInterface instruction.
|
||||
@@ -22,228 +20,91 @@ import (
|
||||
// value field.
|
||||
//
|
||||
// An interface value is a {typecode, value} tuple, or {i16, i8*} to be exact.
|
||||
func (c *Compiler) parseMakeInterface(val llvm.Value, typ types.Type, pos token.Pos) llvm.Value {
|
||||
itfValue := c.emitPointerPack([]llvm.Value{val})
|
||||
itfTypeCodeGlobal := c.getTypeCode(typ)
|
||||
itfMethodSetGlobal := c.getTypeMethodSet(typ)
|
||||
itfConcreteTypeGlobal := c.mod.NamedGlobal("typeInInterface:" + itfTypeCodeGlobal.Name())
|
||||
if itfConcreteTypeGlobal.IsNil() {
|
||||
typeInInterface := c.getLLVMRuntimeType("typeInInterface")
|
||||
itfConcreteTypeGlobal = llvm.AddGlobal(c.mod, typeInInterface, "typeInInterface:"+itfTypeCodeGlobal.Name())
|
||||
itfConcreteTypeGlobal.SetInitializer(llvm.ConstNamedStruct(typeInInterface, []llvm.Value{itfTypeCodeGlobal, itfMethodSetGlobal}))
|
||||
itfConcreteTypeGlobal.SetGlobalConstant(true)
|
||||
itfConcreteTypeGlobal.SetLinkage(llvm.PrivateLinkage)
|
||||
func (c *Compiler) parseMakeInterface(val llvm.Value, typ types.Type, global string, pos token.Pos) (llvm.Value, error) {
|
||||
var itfValue llvm.Value
|
||||
size := c.targetData.TypeAllocSize(val.Type())
|
||||
if size > c.targetData.TypeAllocSize(c.i8ptrType) {
|
||||
if global != "" {
|
||||
// Allocate in a global variable.
|
||||
global := llvm.AddGlobal(c.mod, val.Type(), global+"$itfvalue")
|
||||
global.SetInitializer(val)
|
||||
global.SetLinkage(llvm.InternalLinkage)
|
||||
global.SetGlobalConstant(true)
|
||||
zero := llvm.ConstInt(c.ctx.Int32Type(), 0, false)
|
||||
itfValueRaw := llvm.ConstInBoundsGEP(global, []llvm.Value{zero, zero})
|
||||
itfValue = llvm.ConstBitCast(itfValueRaw, c.i8ptrType)
|
||||
} else {
|
||||
// Allocate on the heap and put a pointer in the interface.
|
||||
// TODO: escape analysis.
|
||||
sizeValue := llvm.ConstInt(c.uintptrType, size, false)
|
||||
alloc := c.createRuntimeCall("alloc", []llvm.Value{sizeValue}, "makeinterface.alloc")
|
||||
itfValueCast := c.builder.CreateBitCast(alloc, llvm.PointerType(val.Type(), 0), "makeinterface.cast.value")
|
||||
c.builder.CreateStore(val, itfValueCast)
|
||||
itfValue = c.builder.CreateBitCast(itfValueCast, c.i8ptrType, "makeinterface.cast.i8ptr")
|
||||
}
|
||||
} else if size == 0 {
|
||||
itfValue = llvm.ConstPointerNull(c.i8ptrType)
|
||||
} else {
|
||||
// Directly place the value in the interface.
|
||||
switch val.Type().TypeKind() {
|
||||
case llvm.IntegerTypeKind:
|
||||
itfValue = c.builder.CreateIntToPtr(val, c.i8ptrType, "makeinterface.cast.int")
|
||||
case llvm.PointerTypeKind:
|
||||
itfValue = c.builder.CreateBitCast(val, c.i8ptrType, "makeinterface.cast.ptr")
|
||||
case llvm.StructTypeKind:
|
||||
// A bitcast would be useful here, but bitcast doesn't allow
|
||||
// aggregate types. So we'll bitcast it using an alloca.
|
||||
// Hopefully this will get optimized away.
|
||||
mem := c.builder.CreateAlloca(c.i8ptrType, "makeinterface.cast.struct")
|
||||
memStructPtr := c.builder.CreateBitCast(mem, llvm.PointerType(val.Type(), 0), "makeinterface.cast.struct.cast")
|
||||
c.builder.CreateStore(val, memStructPtr)
|
||||
itfValue = c.builder.CreateLoad(mem, "makeinterface.cast.load")
|
||||
default:
|
||||
return llvm.Value{}, c.makeError(pos, "todo: makeinterface: cast small type to i8*")
|
||||
}
|
||||
}
|
||||
itfTypeCode := c.builder.CreatePtrToInt(itfConcreteTypeGlobal, c.uintptrType, "")
|
||||
itf := llvm.Undef(c.getLLVMRuntimeType("_interface"))
|
||||
itfTypeCodeGlobal := c.getTypeCode(typ)
|
||||
itfMethodSetGlobal, err := c.getTypeMethodSet(typ)
|
||||
if err != nil {
|
||||
return llvm.Value{}, nil
|
||||
}
|
||||
itfTypeCode := c.createRuntimeCall("makeInterface", []llvm.Value{itfTypeCodeGlobal, itfMethodSetGlobal}, "makeinterface.typecode")
|
||||
itf := llvm.Undef(c.mod.GetTypeByName("runtime._interface"))
|
||||
itf = c.builder.CreateInsertValue(itf, itfTypeCode, 0, "")
|
||||
itf = c.builder.CreateInsertValue(itf, itfValue, 1, "")
|
||||
return itf
|
||||
return itf, nil
|
||||
}
|
||||
|
||||
// getTypeCode returns a reference to a type code.
|
||||
// It returns a pointer to an external global which should be replaced with the
|
||||
// real type in the interface lowering pass.
|
||||
func (c *Compiler) getTypeCode(typ types.Type) llvm.Value {
|
||||
globalName := "reflect/types.type:" + getTypeCodeName(typ)
|
||||
global := c.mod.NamedGlobal(globalName)
|
||||
global := c.mod.NamedGlobal(typ.String() + "$type")
|
||||
if global.IsNil() {
|
||||
// Create a new typecode global.
|
||||
global = llvm.AddGlobal(c.mod, c.getLLVMRuntimeType("typecodeID"), globalName)
|
||||
// Some type classes contain more information for underlying types or
|
||||
// element types. Store it directly in the typecode global to make
|
||||
// reflect lowering simpler.
|
||||
var references llvm.Value
|
||||
var length int64
|
||||
switch typ := typ.(type) {
|
||||
case *types.Named:
|
||||
references = c.getTypeCode(typ.Underlying())
|
||||
case *types.Chan:
|
||||
references = c.getTypeCode(typ.Elem())
|
||||
case *types.Pointer:
|
||||
references = c.getTypeCode(typ.Elem())
|
||||
case *types.Slice:
|
||||
references = c.getTypeCode(typ.Elem())
|
||||
case *types.Array:
|
||||
references = c.getTypeCode(typ.Elem())
|
||||
length = typ.Len()
|
||||
case *types.Struct:
|
||||
// Take a pointer to the typecodeID of the first field (if it exists).
|
||||
structGlobal := c.makeStructTypeFields(typ)
|
||||
references = llvm.ConstBitCast(structGlobal, global.Type())
|
||||
}
|
||||
if !references.IsNil() {
|
||||
// Set the 'references' field of the runtime.typecodeID struct.
|
||||
globalValue := llvm.ConstNull(global.Type().ElementType())
|
||||
globalValue = llvm.ConstInsertValue(globalValue, references, []uint32{0})
|
||||
if length != 0 {
|
||||
lengthValue := llvm.ConstInt(c.uintptrType, uint64(length), false)
|
||||
globalValue = llvm.ConstInsertValue(globalValue, lengthValue, []uint32{1})
|
||||
}
|
||||
global.SetInitializer(globalValue)
|
||||
global.SetLinkage(llvm.PrivateLinkage)
|
||||
}
|
||||
global = llvm.AddGlobal(c.mod, c.ctx.Int8Type(), typ.String()+"$type")
|
||||
global.SetGlobalConstant(true)
|
||||
}
|
||||
return global
|
||||
}
|
||||
|
||||
// makeStructTypeFields creates a new global that stores all type information
|
||||
// related to this struct type, and returns the resulting global. This global is
|
||||
// actually an array of all the fields in the structs.
|
||||
func (c *Compiler) makeStructTypeFields(typ *types.Struct) llvm.Value {
|
||||
// The global is an array of runtime.structField structs.
|
||||
runtimeStructField := c.getLLVMRuntimeType("structField")
|
||||
structGlobalType := llvm.ArrayType(runtimeStructField, typ.NumFields())
|
||||
structGlobal := llvm.AddGlobal(c.mod, structGlobalType, "reflect/types.structFields")
|
||||
structGlobalValue := llvm.ConstNull(structGlobalType)
|
||||
for i := 0; i < typ.NumFields(); i++ {
|
||||
fieldGlobalValue := llvm.ConstNull(runtimeStructField)
|
||||
fieldGlobalValue = llvm.ConstInsertValue(fieldGlobalValue, c.getTypeCode(typ.Field(i).Type()), []uint32{0})
|
||||
fieldName := c.makeGlobalArray([]byte(typ.Field(i).Name()), "reflect/types.structFieldName", c.ctx.Int8Type())
|
||||
fieldName.SetLinkage(llvm.PrivateLinkage)
|
||||
fieldName.SetUnnamedAddr(true)
|
||||
fieldName = llvm.ConstGEP(fieldName, []llvm.Value{
|
||||
llvm.ConstInt(llvm.Int32Type(), 0, false),
|
||||
llvm.ConstInt(llvm.Int32Type(), 0, false),
|
||||
})
|
||||
fieldGlobalValue = llvm.ConstInsertValue(fieldGlobalValue, fieldName, []uint32{1})
|
||||
if typ.Tag(i) != "" {
|
||||
fieldTag := c.makeGlobalArray([]byte(typ.Tag(i)), "reflect/types.structFieldTag", c.ctx.Int8Type())
|
||||
fieldTag.SetLinkage(llvm.PrivateLinkage)
|
||||
fieldTag.SetUnnamedAddr(true)
|
||||
fieldTag = llvm.ConstGEP(fieldTag, []llvm.Value{
|
||||
llvm.ConstInt(llvm.Int32Type(), 0, false),
|
||||
llvm.ConstInt(llvm.Int32Type(), 0, false),
|
||||
})
|
||||
fieldGlobalValue = llvm.ConstInsertValue(fieldGlobalValue, fieldTag, []uint32{2})
|
||||
}
|
||||
if typ.Field(i).Embedded() {
|
||||
fieldEmbedded := llvm.ConstInt(c.ctx.Int1Type(), 1, false)
|
||||
fieldGlobalValue = llvm.ConstInsertValue(fieldGlobalValue, fieldEmbedded, []uint32{3})
|
||||
}
|
||||
structGlobalValue = llvm.ConstInsertValue(structGlobalValue, fieldGlobalValue, []uint32{uint32(i)})
|
||||
}
|
||||
structGlobal.SetInitializer(structGlobalValue)
|
||||
structGlobal.SetUnnamedAddr(true)
|
||||
structGlobal.SetLinkage(llvm.PrivateLinkage)
|
||||
return structGlobal
|
||||
}
|
||||
|
||||
// getTypeCodeName returns a name for this type that can be used in the
|
||||
// interface lowering pass to assign type codes as expected by the reflect
|
||||
// package. See getTypeCodeNum.
|
||||
func getTypeCodeName(t types.Type) string {
|
||||
switch t := t.(type) {
|
||||
case *types.Named:
|
||||
return "named:" + t.String()
|
||||
case *types.Array:
|
||||
return "array:" + strconv.FormatInt(t.Len(), 10) + ":" + getTypeCodeName(t.Elem())
|
||||
case *types.Basic:
|
||||
var kind string
|
||||
switch t.Kind() {
|
||||
case types.Bool:
|
||||
kind = "bool"
|
||||
case types.Int:
|
||||
kind = "int"
|
||||
case types.Int8:
|
||||
kind = "int8"
|
||||
case types.Int16:
|
||||
kind = "int16"
|
||||
case types.Int32:
|
||||
kind = "int32"
|
||||
case types.Int64:
|
||||
kind = "int64"
|
||||
case types.Uint:
|
||||
kind = "uint"
|
||||
case types.Uint8:
|
||||
kind = "uint8"
|
||||
case types.Uint16:
|
||||
kind = "uint16"
|
||||
case types.Uint32:
|
||||
kind = "uint32"
|
||||
case types.Uint64:
|
||||
kind = "uint64"
|
||||
case types.Uintptr:
|
||||
kind = "uintptr"
|
||||
case types.Float32:
|
||||
kind = "float32"
|
||||
case types.Float64:
|
||||
kind = "float64"
|
||||
case types.Complex64:
|
||||
kind = "complex64"
|
||||
case types.Complex128:
|
||||
kind = "complex128"
|
||||
case types.String:
|
||||
kind = "string"
|
||||
case types.UnsafePointer:
|
||||
kind = "unsafeptr"
|
||||
default:
|
||||
panic("unknown basic type: " + t.Name())
|
||||
}
|
||||
return "basic:" + kind
|
||||
case *types.Chan:
|
||||
return "chan:" + getTypeCodeName(t.Elem())
|
||||
case *types.Interface:
|
||||
methods := make([]string, t.NumMethods())
|
||||
for i := 0; i < t.NumMethods(); i++ {
|
||||
methods[i] = getTypeCodeName(t.Method(i).Type())
|
||||
}
|
||||
return "interface:" + "{" + strings.Join(methods, ",") + "}"
|
||||
case *types.Map:
|
||||
keyType := getTypeCodeName(t.Key())
|
||||
elemType := getTypeCodeName(t.Elem())
|
||||
return "map:" + "{" + keyType + "," + elemType + "}"
|
||||
case *types.Pointer:
|
||||
return "pointer:" + getTypeCodeName(t.Elem())
|
||||
case *types.Signature:
|
||||
params := make([]string, t.Params().Len())
|
||||
for i := 0; i < t.Params().Len(); i++ {
|
||||
params[i] = getTypeCodeName(t.Params().At(i).Type())
|
||||
}
|
||||
results := make([]string, t.Results().Len())
|
||||
for i := 0; i < t.Results().Len(); i++ {
|
||||
results[i] = getTypeCodeName(t.Results().At(i).Type())
|
||||
}
|
||||
return "func:" + "{" + strings.Join(params, ",") + "}{" + strings.Join(results, ",") + "}"
|
||||
case *types.Slice:
|
||||
return "slice:" + getTypeCodeName(t.Elem())
|
||||
case *types.Struct:
|
||||
elems := make([]string, t.NumFields())
|
||||
for i := 0; i < t.NumFields(); i++ {
|
||||
embedded := ""
|
||||
if t.Field(i).Embedded() {
|
||||
embedded = "#"
|
||||
}
|
||||
elems[i] = embedded + t.Field(i).Name() + ":" + getTypeCodeName(t.Field(i).Type())
|
||||
if t.Tag(i) != "" {
|
||||
elems[i] += "`" + t.Tag(i) + "`"
|
||||
}
|
||||
}
|
||||
return "struct:" + "{" + strings.Join(elems, ",") + "}"
|
||||
default:
|
||||
panic("unknown type: " + t.String())
|
||||
}
|
||||
}
|
||||
|
||||
// getTypeMethodSet returns a reference (GEP) to a global method set. This
|
||||
// method set should be unreferenced after the interface lowering pass.
|
||||
func (c *Compiler) getTypeMethodSet(typ types.Type) llvm.Value {
|
||||
func (c *Compiler) getTypeMethodSet(typ types.Type) (llvm.Value, error) {
|
||||
global := c.mod.NamedGlobal(typ.String() + "$methodset")
|
||||
zero := llvm.ConstInt(c.ctx.Int32Type(), 0, false)
|
||||
if !global.IsNil() {
|
||||
// the method set already exists
|
||||
return llvm.ConstGEP(global, []llvm.Value{zero, zero})
|
||||
return llvm.ConstGEP(global, []llvm.Value{zero, zero}), nil
|
||||
}
|
||||
|
||||
ms := c.ir.Program.MethodSets.MethodSet(typ)
|
||||
if ms.Len() == 0 {
|
||||
// no methods, so can leave that one out
|
||||
return llvm.ConstPointerNull(llvm.PointerType(c.getLLVMRuntimeType("interfaceMethodInfo"), 0))
|
||||
return llvm.ConstPointerNull(llvm.PointerType(c.mod.GetTypeByName("runtime.interfaceMethodInfo"), 0)), nil
|
||||
}
|
||||
|
||||
methods := make([]llvm.Value, ms.Len())
|
||||
interfaceMethodInfoType := c.getLLVMRuntimeType("interfaceMethodInfo")
|
||||
interfaceMethodInfoType := c.mod.GetTypeByName("runtime.interfaceMethodInfo")
|
||||
for i := 0; i < ms.Len(); i++ {
|
||||
method := ms.At(i)
|
||||
signatureGlobal := c.getMethodSignature(method.Obj().(*types.Func))
|
||||
@@ -252,10 +113,13 @@ func (c *Compiler) getTypeMethodSet(typ types.Type) llvm.Value {
|
||||
// compiler error, so panic
|
||||
panic("cannot find function: " + f.LinkName())
|
||||
}
|
||||
fn := c.getInterfaceInvokeWrapper(f)
|
||||
fn, err := c.getInterfaceInvokeWrapper(f)
|
||||
if err != nil {
|
||||
return llvm.Value{}, err
|
||||
}
|
||||
methodInfo := llvm.ConstNamedStruct(interfaceMethodInfoType, []llvm.Value{
|
||||
signatureGlobal,
|
||||
llvm.ConstPtrToInt(fn, c.uintptrType),
|
||||
llvm.ConstBitCast(fn, c.i8ptrType),
|
||||
})
|
||||
methods[i] = methodInfo
|
||||
}
|
||||
@@ -265,7 +129,7 @@ func (c *Compiler) getTypeMethodSet(typ types.Type) llvm.Value {
|
||||
global.SetInitializer(value)
|
||||
global.SetGlobalConstant(true)
|
||||
global.SetLinkage(llvm.PrivateLinkage)
|
||||
return llvm.ConstGEP(global, []llvm.Value{zero, zero})
|
||||
return llvm.ConstGEP(global, []llvm.Value{zero, zero}), nil
|
||||
}
|
||||
|
||||
// getInterfaceMethodSet returns a global variable with the method set of the
|
||||
@@ -314,9 +178,19 @@ func (c *Compiler) getMethodSignature(method *types.Func) llvm.Value {
|
||||
//
|
||||
// Type asserts on concrete types are trivial: just compare type numbers. Type
|
||||
// asserts on interfaces are more difficult, see the comments in the function.
|
||||
func (c *Compiler) parseTypeAssert(frame *Frame, expr *ssa.TypeAssert) llvm.Value {
|
||||
itf := c.getValue(frame, expr.X)
|
||||
assertedType := c.getLLVMType(expr.AssertedType)
|
||||
func (c *Compiler) parseTypeAssert(frame *Frame, expr *ssa.TypeAssert) (llvm.Value, error) {
|
||||
itf, err := c.parseExpr(frame, expr.X)
|
||||
if err != nil {
|
||||
return llvm.Value{}, err
|
||||
}
|
||||
assertedType, err := c.getLLVMType(expr.AssertedType)
|
||||
if err != nil {
|
||||
return llvm.Value{}, err
|
||||
}
|
||||
valueNil, err := c.getZeroValue(assertedType)
|
||||
if err != nil {
|
||||
return llvm.Value{}, err
|
||||
}
|
||||
|
||||
actualTypeNum := c.builder.CreateExtractValue(itf, 0, "interface.type")
|
||||
commaOk := llvm.Value{}
|
||||
@@ -369,35 +243,71 @@ func (c *Compiler) parseTypeAssert(frame *Frame, expr *ssa.TypeAssert) llvm.Valu
|
||||
// Type assert on concrete type. Extract the underlying type from
|
||||
// the interface (but only after checking it matches).
|
||||
valuePtr := c.builder.CreateExtractValue(itf, 1, "typeassert.value.ptr")
|
||||
valueOk = c.emitPointerUnpack(valuePtr, []llvm.Type{assertedType})[0]
|
||||
size := c.targetData.TypeAllocSize(assertedType)
|
||||
if size > c.targetData.TypeAllocSize(c.i8ptrType) {
|
||||
// Value was stored in an allocated buffer, load it from there.
|
||||
valuePtrCast := c.builder.CreateBitCast(valuePtr, llvm.PointerType(assertedType, 0), "")
|
||||
valueOk = c.builder.CreateLoad(valuePtrCast, "typeassert.value.ok")
|
||||
} else if size == 0 {
|
||||
valueOk, err = c.getZeroValue(assertedType)
|
||||
if err != nil {
|
||||
return llvm.Value{}, err
|
||||
}
|
||||
} else {
|
||||
// Value was stored directly in the interface.
|
||||
switch assertedType.TypeKind() {
|
||||
case llvm.IntegerTypeKind:
|
||||
valueOk = c.builder.CreatePtrToInt(valuePtr, assertedType, "typeassert.value.ok")
|
||||
case llvm.PointerTypeKind:
|
||||
valueOk = c.builder.CreateBitCast(valuePtr, assertedType, "typeassert.value.ok")
|
||||
default: // struct, float, etc.
|
||||
// A bitcast would be useful here, but bitcast doesn't allow
|
||||
// aggregate types. So we'll bitcast it using an alloca.
|
||||
// Hopefully this will get optimized away.
|
||||
mem := c.builder.CreateAlloca(c.i8ptrType, "")
|
||||
c.builder.CreateStore(valuePtr, mem)
|
||||
memCast := c.builder.CreateBitCast(mem, llvm.PointerType(assertedType, 0), "")
|
||||
valueOk = c.builder.CreateLoad(memCast, "typeassert.value.ok")
|
||||
}
|
||||
}
|
||||
}
|
||||
c.builder.CreateBr(nextBlock)
|
||||
|
||||
// Continue after the if statement.
|
||||
c.builder.SetInsertPointAtEnd(nextBlock)
|
||||
phi := c.builder.CreatePHI(assertedType, "typeassert.value")
|
||||
phi.AddIncoming([]llvm.Value{llvm.ConstNull(assertedType), valueOk}, []llvm.BasicBlock{prevBlock, okBlock})
|
||||
phi.AddIncoming([]llvm.Value{valueNil, valueOk}, []llvm.BasicBlock{prevBlock, okBlock})
|
||||
|
||||
if expr.CommaOk {
|
||||
tuple := c.ctx.ConstStruct([]llvm.Value{llvm.Undef(assertedType), llvm.Undef(c.ctx.Int1Type())}, false) // create empty tuple
|
||||
tuple = c.builder.CreateInsertValue(tuple, phi, 0, "") // insert value
|
||||
tuple = c.builder.CreateInsertValue(tuple, commaOk, 1, "") // insert 'comma ok' boolean
|
||||
return tuple
|
||||
return tuple, nil
|
||||
} else {
|
||||
// This is kind of dirty as the branch above becomes mostly useless,
|
||||
// but hopefully this gets optimized away.
|
||||
c.createRuntimeCall("interfaceTypeAssert", []llvm.Value{commaOk}, "")
|
||||
return phi
|
||||
return phi, nil
|
||||
}
|
||||
}
|
||||
|
||||
// getInvokeCall creates and returns the function pointer and parameters of an
|
||||
// interface call. It can be used in a call or defer instruction.
|
||||
func (c *Compiler) getInvokeCall(frame *Frame, instr *ssa.CallCommon) (llvm.Value, []llvm.Value) {
|
||||
func (c *Compiler) getInvokeCall(frame *Frame, instr *ssa.CallCommon) (llvm.Value, []llvm.Value, error) {
|
||||
// Call an interface method with dynamic dispatch.
|
||||
itf := c.getValue(frame, instr.Value) // interface
|
||||
itf, err := c.parseExpr(frame, instr.Value) // interface
|
||||
if err != nil {
|
||||
return llvm.Value{}, nil, err
|
||||
}
|
||||
|
||||
llvmFnType := c.getRawFuncType(instr.Method.Type().(*types.Signature))
|
||||
llvmFnType, err := c.getLLVMType(instr.Method.Type())
|
||||
if err != nil {
|
||||
return llvm.Value{}, nil, err
|
||||
}
|
||||
// getLLVMType() has created a closure type for us, but we don't actually
|
||||
// want a closure type as an interface call can never be a closure call. So
|
||||
// extract the function pointer type from the closure.
|
||||
llvmFnType = llvmFnType.Subtypes()[1]
|
||||
|
||||
typecode := c.builder.CreateExtractValue(itf, 0, "invoke.typecode")
|
||||
values := []llvm.Value{
|
||||
@@ -406,20 +316,22 @@ func (c *Compiler) getInvokeCall(frame *Frame, instr *ssa.CallCommon) (llvm.Valu
|
||||
c.getMethodSignature(instr.Method),
|
||||
}
|
||||
fn := c.createRuntimeCall("interfaceMethod", values, "invoke.func")
|
||||
fnCast := c.builder.CreateIntToPtr(fn, llvmFnType, "invoke.func.cast")
|
||||
fnCast := c.builder.CreateBitCast(fn, llvmFnType, "invoke.func.cast")
|
||||
receiverValue := c.builder.CreateExtractValue(itf, 1, "invoke.func.receiver")
|
||||
|
||||
args := []llvm.Value{receiverValue}
|
||||
for _, arg := range instr.Args {
|
||||
args = append(args, c.getValue(frame, arg))
|
||||
val, err := c.parseExpr(frame, arg)
|
||||
if err != nil {
|
||||
return llvm.Value{}, nil, err
|
||||
}
|
||||
args = append(args, val)
|
||||
}
|
||||
// Add the context parameter. An interface call never takes a context but we
|
||||
// have to supply the parameter anyway.
|
||||
args = append(args, llvm.Undef(c.i8ptrType))
|
||||
// Add the parent goroutine handle.
|
||||
args = append(args, llvm.Undef(c.i8ptrType))
|
||||
|
||||
return fnCast, args
|
||||
return fnCast, args, nil
|
||||
}
|
||||
|
||||
// interfaceInvokeWrapper keeps some state between getInterfaceInvokeWrapper and
|
||||
@@ -435,16 +347,19 @@ type interfaceInvokeWrapper struct {
|
||||
// the underlying value, dereferences it, and calls the real method. This
|
||||
// wrapper is only needed when the interface value actually doesn't fit in a
|
||||
// pointer and a pointer to the value must be created.
|
||||
func (c *Compiler) getInterfaceInvokeWrapper(f *ir.Function) llvm.Value {
|
||||
func (c *Compiler) getInterfaceInvokeWrapper(f *ir.Function) (llvm.Value, error) {
|
||||
wrapperName := f.LinkName() + "$invoke"
|
||||
wrapper := c.mod.NamedFunction(wrapperName)
|
||||
if !wrapper.IsNil() {
|
||||
// Wrapper already created. Return it directly.
|
||||
return wrapper
|
||||
return wrapper, nil
|
||||
}
|
||||
|
||||
// Get the expanded receiver type.
|
||||
receiverType := c.getLLVMType(f.Params[0].Type())
|
||||
receiverType, err := c.getLLVMType(f.Params[0].Type())
|
||||
if err != nil {
|
||||
return llvm.Value{}, err
|
||||
}
|
||||
expandedReceiverType := c.expandFormalParamType(receiverType)
|
||||
|
||||
// Does this method even need any wrapping?
|
||||
@@ -453,7 +368,7 @@ func (c *Compiler) getInterfaceInvokeWrapper(f *ir.Function) llvm.Value {
|
||||
// Casting a function signature to a different signature and calling it
|
||||
// with a receiver pointer bitcasted to *i8 (as done in calls on an
|
||||
// interface) is hopefully a safe (defined) operation.
|
||||
return f.LLVMFn
|
||||
return f.LLVMFn, nil
|
||||
}
|
||||
|
||||
// create wrapper function
|
||||
@@ -461,20 +376,17 @@ func (c *Compiler) getInterfaceInvokeWrapper(f *ir.Function) llvm.Value {
|
||||
paramTypes := append([]llvm.Type{c.i8ptrType}, fnType.ParamTypes()[len(expandedReceiverType):]...)
|
||||
wrapFnType := llvm.FunctionType(fnType.ReturnType(), paramTypes, false)
|
||||
wrapper = llvm.AddFunction(c.mod, wrapperName, wrapFnType)
|
||||
if f.LLVMFn.LastParam().Name() == "parentHandle" {
|
||||
wrapper.LastParam().SetName("parentHandle")
|
||||
}
|
||||
c.interfaceInvokeWrappers = append(c.interfaceInvokeWrappers, interfaceInvokeWrapper{
|
||||
fn: f,
|
||||
wrapper: wrapper,
|
||||
receiverType: receiverType,
|
||||
})
|
||||
return wrapper
|
||||
return wrapper, nil
|
||||
}
|
||||
|
||||
// createInterfaceInvokeWrapper finishes the work of getInterfaceInvokeWrapper,
|
||||
// see that function for details.
|
||||
func (c *Compiler) createInterfaceInvokeWrapper(state interfaceInvokeWrapper) {
|
||||
func (c *Compiler) createInterfaceInvokeWrapper(state interfaceInvokeWrapper) error {
|
||||
wrapper := state.wrapper
|
||||
fn := state.fn
|
||||
receiverType := state.receiverType
|
||||
@@ -482,9 +394,12 @@ func (c *Compiler) createInterfaceInvokeWrapper(state interfaceInvokeWrapper) {
|
||||
wrapper.SetUnnamedAddr(true)
|
||||
|
||||
// add debug info if needed
|
||||
if c.Debug() {
|
||||
if c.Debug {
|
||||
pos := c.ir.Program.Fset.Position(fn.Pos())
|
||||
difunc := c.attachDebugInfoRaw(fn, wrapper, "$invoke", pos.Filename, pos.Line)
|
||||
difunc, err := c.attachDebugInfoRaw(fn, wrapper, "$invoke", pos.Filename, pos.Line)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
c.builder.SetCurrentDebugLocation(uint(pos.Line), uint(pos.Column), difunc, llvm.Metadata{})
|
||||
}
|
||||
|
||||
@@ -492,7 +407,28 @@ func (c *Compiler) createInterfaceInvokeWrapper(state interfaceInvokeWrapper) {
|
||||
block := c.ctx.AddBasicBlock(wrapper, "entry")
|
||||
c.builder.SetInsertPointAtEnd(block)
|
||||
|
||||
receiverValue := c.emitPointerUnpack(wrapper.Param(0), []llvm.Type{receiverType})[0]
|
||||
var receiverPtr llvm.Value
|
||||
if c.targetData.TypeAllocSize(receiverType) > c.targetData.TypeAllocSize(c.i8ptrType) {
|
||||
// The receiver is passed in using a pointer. We have to load it here
|
||||
// and pass it by value to the real function.
|
||||
|
||||
// Load the underlying value.
|
||||
receiverPtrType := llvm.PointerType(receiverType, 0)
|
||||
receiverPtr = c.builder.CreateBitCast(wrapper.Param(0), receiverPtrType, "receiver.ptr")
|
||||
} else {
|
||||
// The value is stored in the interface, but it is of type struct which
|
||||
// is expanded to multiple parameters (e.g. {i8, i8}). So we have to
|
||||
// receive the struct as parameter, expand it, and pass it on to the
|
||||
// real function.
|
||||
|
||||
// Cast the passed-in i8* to the struct value (using an alloca) and
|
||||
// extract its values.
|
||||
alloca := c.builder.CreateAlloca(c.i8ptrType, "receiver.alloca")
|
||||
c.builder.CreateStore(wrapper.Param(0), alloca)
|
||||
receiverPtr = c.builder.CreateBitCast(alloca, llvm.PointerType(receiverType, 0), "receiver.ptr")
|
||||
}
|
||||
|
||||
receiverValue := c.builder.CreateLoad(receiverPtr, "receiver")
|
||||
params := append(c.expandFormalParam(receiverValue), wrapper.Params()[1:]...)
|
||||
if fn.LLVMFn.Type().ElementType().ReturnType().TypeKind() == llvm.VoidTypeKind {
|
||||
c.builder.CreateCall(fn.LLVMFn, params, "")
|
||||
@@ -501,4 +437,6 @@ func (c *Compiler) createInterfaceInvokeWrapper(state interfaceInvokeWrapper) {
|
||||
ret := c.builder.CreateCall(fn.LLVMFn, params, "ret")
|
||||
c.builder.CreateRet(ret)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
@@ -1,141 +0,0 @@
|
||||
package compiler
|
||||
|
||||
import (
|
||||
"github.com/tinygo-org/tinygo/compiler/llvmutil"
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
// This file contains helper functions for LLVM that are not exposed in the Go
|
||||
// bindings.
|
||||
|
||||
// Return a list of values (actually, instructions) where this value is used as
|
||||
// an operand.
|
||||
func getUses(value llvm.Value) []llvm.Value {
|
||||
if value.IsNil() {
|
||||
return nil
|
||||
}
|
||||
var uses []llvm.Value
|
||||
use := value.FirstUse()
|
||||
for !use.IsNil() {
|
||||
uses = append(uses, use.User())
|
||||
use = use.NextUse()
|
||||
}
|
||||
return uses
|
||||
}
|
||||
|
||||
// createTemporaryAlloca creates a new alloca in the entry block and adds
|
||||
// lifetime start infromation in the IR signalling that the alloca won't be used
|
||||
// before this point.
|
||||
//
|
||||
// This is useful for creating temporary allocas for intrinsics. Don't forget to
|
||||
// end the lifetime using emitLifetimeEnd after you're done with it.
|
||||
func (c *Compiler) createTemporaryAlloca(t llvm.Type, name string) (alloca, bitcast, size llvm.Value) {
|
||||
return llvmutil.CreateTemporaryAlloca(c.builder, c.mod, t, name)
|
||||
}
|
||||
|
||||
// emitLifetimeEnd signals the end of an (alloca) lifetime by calling the
|
||||
// llvm.lifetime.end intrinsic. It is commonly used together with
|
||||
// createTemporaryAlloca.
|
||||
func (c *Compiler) emitLifetimeEnd(ptr, size llvm.Value) {
|
||||
llvmutil.EmitLifetimeEnd(c.builder, c.mod, ptr, size)
|
||||
}
|
||||
|
||||
// emitPointerPack packs the list of values into a single pointer value using
|
||||
// bitcasts, or else allocates a value on the heap if it cannot be packed in the
|
||||
// pointer value directly. It returns the pointer with the packed data.
|
||||
func (c *Compiler) emitPointerPack(values []llvm.Value) llvm.Value {
|
||||
return llvmutil.EmitPointerPack(c.builder, c.mod, c.Config, values)
|
||||
}
|
||||
|
||||
// emitPointerUnpack extracts a list of values packed using emitPointerPack.
|
||||
func (c *Compiler) emitPointerUnpack(ptr llvm.Value, valueTypes []llvm.Type) []llvm.Value {
|
||||
return llvmutil.EmitPointerUnpack(c.builder, c.mod, ptr, valueTypes)
|
||||
}
|
||||
|
||||
// splitBasicBlock splits a LLVM basic block into two parts. All instructions
|
||||
// after afterInst are moved into a new basic block (created right after the
|
||||
// current one) with the given name.
|
||||
func (c *Compiler) splitBasicBlock(afterInst llvm.Value, insertAfter llvm.BasicBlock, name string) llvm.BasicBlock {
|
||||
oldBlock := afterInst.InstructionParent()
|
||||
newBlock := c.ctx.InsertBasicBlock(insertAfter, name)
|
||||
var nextInstructions []llvm.Value // values to move
|
||||
|
||||
// Collect to-be-moved instructions.
|
||||
inst := afterInst
|
||||
for {
|
||||
inst = llvm.NextInstruction(inst)
|
||||
if inst.IsNil() {
|
||||
break
|
||||
}
|
||||
nextInstructions = append(nextInstructions, inst)
|
||||
}
|
||||
|
||||
// Move instructions.
|
||||
c.builder.SetInsertPointAtEnd(newBlock)
|
||||
for _, inst := range nextInstructions {
|
||||
inst.RemoveFromParentAsInstruction()
|
||||
c.builder.Insert(inst)
|
||||
}
|
||||
|
||||
// Find PHI nodes to update.
|
||||
var phiNodes []llvm.Value // PHI nodes to update
|
||||
for bb := insertAfter.Parent().FirstBasicBlock(); !bb.IsNil(); bb = llvm.NextBasicBlock(bb) {
|
||||
for inst := bb.FirstInstruction(); !inst.IsNil(); inst = llvm.NextInstruction(inst) {
|
||||
if inst.IsAPHINode().IsNil() {
|
||||
continue
|
||||
}
|
||||
needsUpdate := false
|
||||
incomingCount := inst.IncomingCount()
|
||||
for i := 0; i < incomingCount; i++ {
|
||||
if inst.IncomingBlock(i) == oldBlock {
|
||||
needsUpdate = true
|
||||
break
|
||||
}
|
||||
}
|
||||
if !needsUpdate {
|
||||
// PHI node has no incoming edge from the old block.
|
||||
continue
|
||||
}
|
||||
phiNodes = append(phiNodes, inst)
|
||||
}
|
||||
}
|
||||
|
||||
// Update PHI nodes.
|
||||
for _, phi := range phiNodes {
|
||||
c.builder.SetInsertPointBefore(phi)
|
||||
newPhi := c.builder.CreatePHI(phi.Type(), "")
|
||||
incomingCount := phi.IncomingCount()
|
||||
incomingVals := make([]llvm.Value, incomingCount)
|
||||
incomingBlocks := make([]llvm.BasicBlock, incomingCount)
|
||||
for i := 0; i < incomingCount; i++ {
|
||||
value := phi.IncomingValue(i)
|
||||
block := phi.IncomingBlock(i)
|
||||
if block == oldBlock {
|
||||
block = newBlock
|
||||
}
|
||||
incomingVals[i] = value
|
||||
incomingBlocks[i] = block
|
||||
}
|
||||
newPhi.AddIncoming(incomingVals, incomingBlocks)
|
||||
phi.ReplaceAllUsesWith(newPhi)
|
||||
phi.EraseFromParentAsInstruction()
|
||||
}
|
||||
|
||||
return newBlock
|
||||
}
|
||||
|
||||
// makeGlobalArray creates a new LLVM global with the given name and integers as
|
||||
// contents, and returns the global.
|
||||
// Note that it is left with the default linkage etc., you should set
|
||||
// linkage/constant/etc properties yourself.
|
||||
func (c *Compiler) makeGlobalArray(buf []byte, name string, elementType llvm.Type) llvm.Value {
|
||||
globalType := llvm.ArrayType(elementType, len(buf))
|
||||
global := llvm.AddGlobal(c.mod, globalType, name)
|
||||
value := llvm.Undef(globalType)
|
||||
for i := 0; i < len(buf); i++ {
|
||||
ch := uint64(buf[i])
|
||||
value = llvm.ConstInsertValue(value, llvm.ConstInt(elementType, ch, false), []uint32{uint32(i)})
|
||||
}
|
||||
global.SetInitializer(value)
|
||||
return global
|
||||
}
|
||||
@@ -1,96 +0,0 @@
|
||||
// Package llvmutil contains utility functions used across multiple compiler
|
||||
// packages. For example, they may be used by both the compiler pacakge and
|
||||
// transformation packages.
|
||||
//
|
||||
// Normally, utility packages are avoided. However, in this case, the utility
|
||||
// functions are non-trivial and hard to get right. Copying them to multiple
|
||||
// places would be a big risk if only one of them is updated.
|
||||
package llvmutil
|
||||
|
||||
import "tinygo.org/x/go-llvm"
|
||||
|
||||
// CreateEntryBlockAlloca creates a new alloca in the entry block, even though
|
||||
// the IR builder is located elsewhere. It assumes that the insert point is
|
||||
// at the end of the current block.
|
||||
func CreateEntryBlockAlloca(builder llvm.Builder, t llvm.Type, name string) llvm.Value {
|
||||
currentBlock := builder.GetInsertBlock()
|
||||
entryBlock := currentBlock.Parent().EntryBasicBlock()
|
||||
if entryBlock.FirstInstruction().IsNil() {
|
||||
builder.SetInsertPointAtEnd(entryBlock)
|
||||
} else {
|
||||
builder.SetInsertPointBefore(entryBlock.FirstInstruction())
|
||||
}
|
||||
alloca := builder.CreateAlloca(t, name)
|
||||
builder.SetInsertPointAtEnd(currentBlock)
|
||||
return alloca
|
||||
}
|
||||
|
||||
// CreateTemporaryAlloca creates a new alloca in the entry block and adds
|
||||
// lifetime start infromation in the IR signalling that the alloca won't be used
|
||||
// before this point.
|
||||
//
|
||||
// This is useful for creating temporary allocas for intrinsics. Don't forget to
|
||||
// end the lifetime using emitLifetimeEnd after you're done with it.
|
||||
func CreateTemporaryAlloca(builder llvm.Builder, mod llvm.Module, t llvm.Type, name string) (alloca, bitcast, size llvm.Value) {
|
||||
ctx := t.Context()
|
||||
targetData := llvm.NewTargetData(mod.DataLayout())
|
||||
i8ptrType := llvm.PointerType(ctx.Int8Type(), 0)
|
||||
alloca = CreateEntryBlockAlloca(builder, t, name)
|
||||
bitcast = builder.CreateBitCast(alloca, i8ptrType, name+".bitcast")
|
||||
size = llvm.ConstInt(ctx.Int64Type(), targetData.TypeAllocSize(t), false)
|
||||
builder.CreateCall(getLifetimeStartFunc(mod), []llvm.Value{size, bitcast}, "")
|
||||
return
|
||||
}
|
||||
|
||||
// CreateInstructionAlloca creates an alloca in the entry block, and places lifetime control intrinsics around the instruction
|
||||
func CreateInstructionAlloca(builder llvm.Builder, mod llvm.Module, t llvm.Type, inst llvm.Value, name string) llvm.Value {
|
||||
ctx := mod.Context()
|
||||
targetData := llvm.NewTargetData(mod.DataLayout())
|
||||
i8ptrType := llvm.PointerType(ctx.Int8Type(), 0)
|
||||
|
||||
alloca := CreateEntryBlockAlloca(builder, t, name)
|
||||
builder.SetInsertPointBefore(inst)
|
||||
bitcast := builder.CreateBitCast(alloca, i8ptrType, name+".bitcast")
|
||||
size := llvm.ConstInt(ctx.Int64Type(), targetData.TypeAllocSize(t), false)
|
||||
builder.CreateCall(getLifetimeStartFunc(mod), []llvm.Value{size, bitcast}, "")
|
||||
if next := llvm.NextInstruction(inst); !next.IsNil() {
|
||||
builder.SetInsertPointBefore(next)
|
||||
} else {
|
||||
builder.SetInsertPointAtEnd(inst.InstructionParent())
|
||||
}
|
||||
builder.CreateCall(getLifetimeEndFunc(mod), []llvm.Value{size, bitcast}, "")
|
||||
return alloca
|
||||
}
|
||||
|
||||
// EmitLifetimeEnd signals the end of an (alloca) lifetime by calling the
|
||||
// llvm.lifetime.end intrinsic. It is commonly used together with
|
||||
// createTemporaryAlloca.
|
||||
func EmitLifetimeEnd(builder llvm.Builder, mod llvm.Module, ptr, size llvm.Value) {
|
||||
builder.CreateCall(getLifetimeEndFunc(mod), []llvm.Value{size, ptr}, "")
|
||||
}
|
||||
|
||||
// getLifetimeStartFunc returns the llvm.lifetime.start intrinsic and creates it
|
||||
// first if it doesn't exist yet.
|
||||
func getLifetimeStartFunc(mod llvm.Module) llvm.Value {
|
||||
fn := mod.NamedFunction("llvm.lifetime.start.p0i8")
|
||||
ctx := mod.Context()
|
||||
i8ptrType := llvm.PointerType(ctx.Int8Type(), 0)
|
||||
if fn.IsNil() {
|
||||
fnType := llvm.FunctionType(ctx.VoidType(), []llvm.Type{ctx.Int64Type(), i8ptrType}, false)
|
||||
fn = llvm.AddFunction(mod, "llvm.lifetime.start.p0i8", fnType)
|
||||
}
|
||||
return fn
|
||||
}
|
||||
|
||||
// getLifetimeEndFunc returns the llvm.lifetime.end intrinsic and creates it
|
||||
// first if it doesn't exist yet.
|
||||
func getLifetimeEndFunc(mod llvm.Module) llvm.Value {
|
||||
fn := mod.NamedFunction("llvm.lifetime.end.p0i8")
|
||||
ctx := mod.Context()
|
||||
i8ptrType := llvm.PointerType(ctx.Int8Type(), 0)
|
||||
if fn.IsNil() {
|
||||
fnType := llvm.FunctionType(ctx.VoidType(), []llvm.Type{ctx.Int64Type(), i8ptrType}, false)
|
||||
fn = llvm.AddFunction(mod, "llvm.lifetime.end.p0i8", fnType)
|
||||
}
|
||||
return fn
|
||||
}
|
||||
@@ -1,141 +0,0 @@
|
||||
package llvmutil
|
||||
|
||||
// This file contains utility functions to pack and unpack sets of values. It
|
||||
// can take in a list of values and tries to store it efficiently in the pointer
|
||||
// itself if possible and legal.
|
||||
|
||||
import (
|
||||
"github.com/tinygo-org/tinygo/compileopts"
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
// EmitPointerPack packs the list of values into a single pointer value using
|
||||
// bitcasts, or else allocates a value on the heap if it cannot be packed in the
|
||||
// pointer value directly. It returns the pointer with the packed data.
|
||||
func EmitPointerPack(builder llvm.Builder, mod llvm.Module, config *compileopts.Config, values []llvm.Value) llvm.Value {
|
||||
ctx := mod.Context()
|
||||
targetData := llvm.NewTargetData(mod.DataLayout())
|
||||
i8ptrType := llvm.PointerType(mod.Context().Int8Type(), 0)
|
||||
uintptrType := ctx.IntType(llvm.NewTargetData(mod.DataLayout()).PointerSize() * 8)
|
||||
|
||||
valueTypes := make([]llvm.Type, len(values))
|
||||
for i, value := range values {
|
||||
valueTypes[i] = value.Type()
|
||||
}
|
||||
packedType := ctx.StructType(valueTypes, false)
|
||||
|
||||
// Allocate memory for the packed data.
|
||||
var packedAlloc, packedHeapAlloc llvm.Value
|
||||
size := targetData.TypeAllocSize(packedType)
|
||||
if size == 0 {
|
||||
return llvm.ConstPointerNull(i8ptrType)
|
||||
} else if len(values) == 1 && values[0].Type().TypeKind() == llvm.PointerTypeKind {
|
||||
return builder.CreateBitCast(values[0], i8ptrType, "pack.ptr")
|
||||
} else if size <= targetData.TypeAllocSize(i8ptrType) {
|
||||
// Packed data fits in a pointer, so store it directly inside the
|
||||
// pointer.
|
||||
if len(values) == 1 && values[0].Type().TypeKind() == llvm.IntegerTypeKind {
|
||||
// Try to keep this cast in SSA form.
|
||||
return builder.CreateIntToPtr(values[0], i8ptrType, "pack.int")
|
||||
}
|
||||
// Because packedType is a struct and we have to cast it to a *i8, store
|
||||
// it in an alloca first for bitcasting (store+bitcast+load).
|
||||
packedAlloc, _, _ = CreateTemporaryAlloca(builder, mod, packedType, "")
|
||||
} else {
|
||||
// Packed data is bigger than a pointer, so allocate it on the heap.
|
||||
sizeValue := llvm.ConstInt(uintptrType, size, false)
|
||||
alloc := mod.NamedFunction("runtime.alloc")
|
||||
packedHeapAlloc = builder.CreateCall(alloc, []llvm.Value{
|
||||
sizeValue,
|
||||
llvm.Undef(i8ptrType), // unused context parameter
|
||||
llvm.ConstPointerNull(i8ptrType), // coroutine handle
|
||||
}, "")
|
||||
if config.NeedsStackObjects() {
|
||||
trackPointer := mod.NamedFunction("runtime.trackPointer")
|
||||
builder.CreateCall(trackPointer, []llvm.Value{
|
||||
packedHeapAlloc,
|
||||
llvm.Undef(i8ptrType), // unused context parameter
|
||||
llvm.ConstPointerNull(i8ptrType), // coroutine handle
|
||||
}, "")
|
||||
}
|
||||
packedAlloc = builder.CreateBitCast(packedHeapAlloc, llvm.PointerType(packedType, 0), "")
|
||||
}
|
||||
// Store all values in the alloca or heap pointer.
|
||||
for i, value := range values {
|
||||
indices := []llvm.Value{
|
||||
llvm.ConstInt(ctx.Int32Type(), 0, false),
|
||||
llvm.ConstInt(ctx.Int32Type(), uint64(i), false),
|
||||
}
|
||||
gep := builder.CreateInBoundsGEP(packedAlloc, indices, "")
|
||||
builder.CreateStore(value, gep)
|
||||
}
|
||||
|
||||
if packedHeapAlloc.IsNil() {
|
||||
// Load value (as *i8) from the alloca.
|
||||
packedAlloc = builder.CreateBitCast(packedAlloc, llvm.PointerType(i8ptrType, 0), "")
|
||||
result := builder.CreateLoad(packedAlloc, "")
|
||||
packedPtr := builder.CreateBitCast(packedAlloc, i8ptrType, "")
|
||||
packedSize := llvm.ConstInt(ctx.Int64Type(), targetData.TypeAllocSize(packedAlloc.Type()), false)
|
||||
EmitLifetimeEnd(builder, mod, packedPtr, packedSize)
|
||||
return result
|
||||
} else {
|
||||
// Get the original heap allocation pointer, which already is an *i8.
|
||||
return packedHeapAlloc
|
||||
}
|
||||
}
|
||||
|
||||
// EmitPointerUnpack extracts a list of values packed using EmitPointerPack.
|
||||
func EmitPointerUnpack(builder llvm.Builder, mod llvm.Module, ptr llvm.Value, valueTypes []llvm.Type) []llvm.Value {
|
||||
ctx := mod.Context()
|
||||
targetData := llvm.NewTargetData(mod.DataLayout())
|
||||
i8ptrType := llvm.PointerType(mod.Context().Int8Type(), 0)
|
||||
uintptrType := ctx.IntType(llvm.NewTargetData(mod.DataLayout()).PointerSize() * 8)
|
||||
|
||||
packedType := ctx.StructType(valueTypes, false)
|
||||
|
||||
// Get a correctly-typed pointer to the packed data.
|
||||
var packedAlloc, packedRawAlloc llvm.Value
|
||||
size := targetData.TypeAllocSize(packedType)
|
||||
if size == 0 {
|
||||
// No data to unpack.
|
||||
} else if len(valueTypes) == 1 && valueTypes[0].TypeKind() == llvm.PointerTypeKind {
|
||||
// A single pointer is always stored directly.
|
||||
return []llvm.Value{builder.CreateBitCast(ptr, valueTypes[0], "unpack.ptr")}
|
||||
} else if size <= targetData.TypeAllocSize(i8ptrType) {
|
||||
// Packed data stored directly in pointer.
|
||||
if len(valueTypes) == 1 && valueTypes[0].TypeKind() == llvm.IntegerTypeKind {
|
||||
// Keep this cast in SSA form.
|
||||
return []llvm.Value{builder.CreatePtrToInt(ptr, valueTypes[0], "unpack.int")}
|
||||
}
|
||||
// Fallback: load it using an alloca.
|
||||
packedRawAlloc, _, _ = CreateTemporaryAlloca(builder, mod, llvm.PointerType(i8ptrType, 0), "unpack.raw.alloc")
|
||||
packedRawValue := builder.CreateBitCast(ptr, llvm.PointerType(i8ptrType, 0), "unpack.raw.value")
|
||||
builder.CreateStore(packedRawValue, packedRawAlloc)
|
||||
packedAlloc = builder.CreateBitCast(packedRawAlloc, llvm.PointerType(packedType, 0), "unpack.alloc")
|
||||
} else {
|
||||
// Packed data stored on the heap. Bitcast the passed-in pointer to the
|
||||
// correct pointer type.
|
||||
packedAlloc = builder.CreateBitCast(ptr, llvm.PointerType(packedType, 0), "unpack.raw.ptr")
|
||||
}
|
||||
// Load each value from the packed data.
|
||||
values := make([]llvm.Value, len(valueTypes))
|
||||
for i, valueType := range valueTypes {
|
||||
if targetData.TypeAllocSize(valueType) == 0 {
|
||||
// This value has length zero, so there's nothing to load.
|
||||
values[i] = llvm.ConstNull(valueType)
|
||||
continue
|
||||
}
|
||||
indices := []llvm.Value{
|
||||
llvm.ConstInt(ctx.Int32Type(), 0, false),
|
||||
llvm.ConstInt(ctx.Int32Type(), uint64(i), false),
|
||||
}
|
||||
gep := builder.CreateInBoundsGEP(packedAlloc, indices, "")
|
||||
values[i] = builder.CreateLoad(gep, "")
|
||||
}
|
||||
if !packedRawAlloc.IsNil() {
|
||||
allocPtr := builder.CreateBitCast(packedRawAlloc, i8ptrType, "")
|
||||
allocSize := llvm.ConstInt(ctx.Int64Type(), targetData.TypeAllocSize(uintptrType), false)
|
||||
EmitLifetimeEnd(builder, mod, allocPtr, allocSize)
|
||||
}
|
||||
return values
|
||||
}
|
||||
+23
-38
@@ -6,18 +6,16 @@ import (
|
||||
"go/token"
|
||||
"go/types"
|
||||
|
||||
"tinygo.org/x/go-llvm"
|
||||
"github.com/aykevl/go-llvm"
|
||||
)
|
||||
|
||||
func (c *Compiler) emitMapLookup(keyType, valueType types.Type, m, key llvm.Value, commaOk bool, pos token.Pos) (llvm.Value, error) {
|
||||
llvmValueType := c.getLLVMType(valueType)
|
||||
|
||||
// Allocate the memory for the resulting type. Do not zero this memory: it
|
||||
// will be zeroed by the hashmap get implementation if the key is not
|
||||
// present in the map.
|
||||
mapValueAlloca, mapValuePtr, mapValueSize := c.createTemporaryAlloca(llvmValueType, "hashmap.value")
|
||||
|
||||
// Do the lookup. How it is done depends on the key type.
|
||||
llvmValueType, err := c.getLLVMType(valueType)
|
||||
if err != nil {
|
||||
return llvm.Value{}, err
|
||||
}
|
||||
mapValueAlloca := c.builder.CreateAlloca(llvmValueType, "hashmap.value")
|
||||
mapValuePtr := c.builder.CreateBitCast(mapValueAlloca, c.i8ptrType, "hashmap.valueptr")
|
||||
var commaOkValue llvm.Value
|
||||
if t, ok := keyType.(*types.Basic); ok && t.Info()&types.IsString != 0 {
|
||||
// key is a string
|
||||
@@ -25,24 +23,15 @@ func (c *Compiler) emitMapLookup(keyType, valueType types.Type, m, key llvm.Valu
|
||||
commaOkValue = c.createRuntimeCall("hashmapStringGet", params, "")
|
||||
} else if hashmapIsBinaryKey(keyType) {
|
||||
// key can be compared with runtime.memequal
|
||||
// Store the key in an alloca, in the entry block to avoid dynamic stack
|
||||
// growth.
|
||||
mapKeyAlloca, mapKeyPtr, mapKeySize := c.createTemporaryAlloca(key.Type(), "hashmap.key")
|
||||
c.builder.CreateStore(key, mapKeyAlloca)
|
||||
// Fetch the value from the hashmap.
|
||||
params := []llvm.Value{m, mapKeyPtr, mapValuePtr}
|
||||
keyAlloca := c.builder.CreateAlloca(key.Type(), "hashmap.key")
|
||||
c.builder.CreateStore(key, keyAlloca)
|
||||
keyPtr := c.builder.CreateBitCast(keyAlloca, c.i8ptrType, "hashmap.keyptr")
|
||||
params := []llvm.Value{m, keyPtr, mapValuePtr}
|
||||
commaOkValue = c.createRuntimeCall("hashmapBinaryGet", params, "")
|
||||
c.emitLifetimeEnd(mapKeyPtr, mapKeySize)
|
||||
} else {
|
||||
// Not trivially comparable using memcmp.
|
||||
return llvm.Value{}, c.makeError(pos, "only strings, bools, ints, pointers or structs of bools/ints are supported as map keys, but got: "+keyType.String())
|
||||
return llvm.Value{}, c.makeError(pos, "todo: map lookup key type: "+keyType.String())
|
||||
}
|
||||
|
||||
// Load the resulting value from the hashmap. The value is set to the zero
|
||||
// value if the key doesn't exist in the hashmap.
|
||||
mapValue := c.builder.CreateLoad(mapValueAlloca, "")
|
||||
c.emitLifetimeEnd(mapValuePtr, mapValueSize)
|
||||
|
||||
if commaOk {
|
||||
tuple := llvm.Undef(c.ctx.StructType([]llvm.Type{llvmValueType, c.ctx.Int1Type()}, false))
|
||||
tuple = c.builder.CreateInsertValue(tuple, mapValue, 0, "")
|
||||
@@ -53,25 +42,27 @@ func (c *Compiler) emitMapLookup(keyType, valueType types.Type, m, key llvm.Valu
|
||||
}
|
||||
}
|
||||
|
||||
func (c *Compiler) emitMapUpdate(keyType types.Type, m, key, value llvm.Value, pos token.Pos) {
|
||||
valueAlloca, valuePtr, valueSize := c.createTemporaryAlloca(value.Type(), "hashmap.value")
|
||||
func (c *Compiler) emitMapUpdate(keyType types.Type, m, key, value llvm.Value, pos token.Pos) error {
|
||||
valueAlloca := c.builder.CreateAlloca(value.Type(), "hashmap.value")
|
||||
c.builder.CreateStore(value, valueAlloca)
|
||||
valuePtr := c.builder.CreateBitCast(valueAlloca, c.i8ptrType, "hashmap.valueptr")
|
||||
keyType = keyType.Underlying()
|
||||
if t, ok := keyType.(*types.Basic); ok && t.Info()&types.IsString != 0 {
|
||||
// key is a string
|
||||
params := []llvm.Value{m, key, valuePtr}
|
||||
c.createRuntimeCall("hashmapStringSet", params, "")
|
||||
return nil
|
||||
} else if hashmapIsBinaryKey(keyType) {
|
||||
// key can be compared with runtime.memequal
|
||||
keyAlloca, keyPtr, keySize := c.createTemporaryAlloca(key.Type(), "hashmap.key")
|
||||
keyAlloca := c.builder.CreateAlloca(key.Type(), "hashmap.key")
|
||||
c.builder.CreateStore(key, keyAlloca)
|
||||
keyPtr := c.builder.CreateBitCast(keyAlloca, c.i8ptrType, "hashmap.keyptr")
|
||||
params := []llvm.Value{m, keyPtr, valuePtr}
|
||||
c.createRuntimeCall("hashmapBinarySet", params, "")
|
||||
c.emitLifetimeEnd(keyPtr, keySize)
|
||||
return nil
|
||||
} else {
|
||||
c.addError(pos, "only strings, bools, ints, pointers or structs of bools/ints are supported as map keys, but got: "+keyType.String())
|
||||
return c.makeError(pos, "todo: map update key type: "+keyType.String())
|
||||
}
|
||||
c.emitLifetimeEnd(valuePtr, valueSize)
|
||||
}
|
||||
|
||||
func (c *Compiler) emitMapDelete(keyType types.Type, m, key llvm.Value, pos token.Pos) error {
|
||||
@@ -82,14 +73,14 @@ func (c *Compiler) emitMapDelete(keyType types.Type, m, key llvm.Value, pos toke
|
||||
c.createRuntimeCall("hashmapStringDelete", params, "")
|
||||
return nil
|
||||
} else if hashmapIsBinaryKey(keyType) {
|
||||
keyAlloca, keyPtr, keySize := c.createTemporaryAlloca(key.Type(), "hashmap.key")
|
||||
keyAlloca := c.builder.CreateAlloca(key.Type(), "hashmap.key")
|
||||
c.builder.CreateStore(key, keyAlloca)
|
||||
keyPtr := c.builder.CreateBitCast(keyAlloca, c.i8ptrType, "hashmap.keyptr")
|
||||
params := []llvm.Value{m, keyPtr}
|
||||
c.createRuntimeCall("hashmapBinaryDelete", params, "")
|
||||
c.emitLifetimeEnd(keyPtr, keySize)
|
||||
return nil
|
||||
} else {
|
||||
return c.makeError(pos, "only strings, bools, ints, pointers or structs of bools/ints are supported as map keys, but got: "+keyType.String())
|
||||
return c.makeError(pos, "todo: map delete key type: "+keyType.String())
|
||||
}
|
||||
}
|
||||
|
||||
@@ -121,8 +112,6 @@ func hashmapIsBinaryKey(keyType types.Type) bool {
|
||||
switch keyType := keyType.(type) {
|
||||
case *types.Basic:
|
||||
return keyType.Info()&(types.IsBoolean|types.IsInteger) != 0
|
||||
case *types.Pointer:
|
||||
return true
|
||||
case *types.Struct:
|
||||
for i := 0; i < keyType.NumFields(); i++ {
|
||||
fieldType := keyType.Field(i).Type().Underlying()
|
||||
@@ -131,10 +120,6 @@ func hashmapIsBinaryKey(keyType types.Type) bool {
|
||||
}
|
||||
}
|
||||
return true
|
||||
case *types.Array:
|
||||
return hashmapIsBinaryKey(keyType.Elem())
|
||||
case *types.Named:
|
||||
return hashmapIsBinaryKey(keyType.Underlying())
|
||||
default:
|
||||
return false
|
||||
}
|
||||
|
||||
+269
-73
@@ -3,8 +3,7 @@ package compiler
|
||||
import (
|
||||
"errors"
|
||||
|
||||
"github.com/tinygo-org/tinygo/transform"
|
||||
"tinygo.org/x/go-llvm"
|
||||
"github.com/aykevl/go-llvm"
|
||||
)
|
||||
|
||||
// Run the LLVM optimizer over the module.
|
||||
@@ -19,18 +18,6 @@ func (c *Compiler) Optimize(optLevel, sizeLevel int, inlinerThreshold uint) erro
|
||||
}
|
||||
builder.AddCoroutinePassesToExtensionPoints()
|
||||
|
||||
if c.PanicStrategy() == "trap" {
|
||||
transform.ReplacePanicsWithTrap(c.mod) // -panic=trap
|
||||
}
|
||||
|
||||
// run a check of all of our code
|
||||
if c.VerifyIR() {
|
||||
err := c.checkModule()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Run function passes for each function.
|
||||
funcPasses := llvm.NewFunctionPassManagerForModule(c.mod)
|
||||
defer funcPasses.Dispose()
|
||||
@@ -52,11 +39,10 @@ func (c *Compiler) Optimize(optLevel, sizeLevel int, inlinerThreshold uint) erro
|
||||
goPasses.Run(c.mod)
|
||||
|
||||
// Run Go-specific optimization passes.
|
||||
transform.OptimizeMaps(c.mod)
|
||||
transform.OptimizeStringToBytes(c.mod)
|
||||
transform.OptimizeAllocs(c.mod)
|
||||
transform.LowerInterfaces(c.mod)
|
||||
c.LowerFuncValues()
|
||||
c.OptimizeMaps()
|
||||
c.OptimizeStringToBytes()
|
||||
c.OptimizeAllocs()
|
||||
c.LowerInterfaces()
|
||||
|
||||
// After interfaces are lowered, there are many more opportunities for
|
||||
// interprocedural optimizations. To get them to work, function
|
||||
@@ -64,42 +50,15 @@ func (c *Compiler) Optimize(optLevel, sizeLevel int, inlinerThreshold uint) erro
|
||||
goPasses.Run(c.mod)
|
||||
|
||||
// Run TinyGo-specific interprocedural optimizations.
|
||||
transform.OptimizeAllocs(c.mod)
|
||||
transform.OptimizeStringToBytes(c.mod)
|
||||
c.OptimizeAllocs()
|
||||
c.OptimizeStringToBytes()
|
||||
|
||||
// Lower runtime.isnil calls to regular nil comparisons.
|
||||
isnil := c.mod.NamedFunction("runtime.isnil")
|
||||
if !isnil.IsNil() {
|
||||
for _, use := range getUses(isnil) {
|
||||
c.builder.SetInsertPointBefore(use)
|
||||
ptr := use.Operand(0)
|
||||
if !ptr.IsABitCastInst().IsNil() {
|
||||
ptr = ptr.Operand(0)
|
||||
}
|
||||
nilptr := llvm.ConstPointerNull(ptr.Type())
|
||||
icmp := c.builder.CreateICmp(llvm.IntEQ, ptr, nilptr, "")
|
||||
use.ReplaceAllUsesWith(icmp)
|
||||
use.EraseFromParentAsInstruction()
|
||||
}
|
||||
}
|
||||
|
||||
err := c.LowerGoroutines()
|
||||
if err != nil {
|
||||
return err
|
||||
if c.selectGC() == "shadowstack" {
|
||||
c.AddGCRoots()
|
||||
}
|
||||
} else {
|
||||
// Must be run at any optimization level.
|
||||
transform.LowerInterfaces(c.mod)
|
||||
c.LowerFuncValues()
|
||||
err := c.LowerGoroutines()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if c.VerifyIR() {
|
||||
if err := c.checkModule(); err != nil {
|
||||
return err
|
||||
}
|
||||
c.LowerInterfaces()
|
||||
}
|
||||
if err := c.Verify(); err != nil {
|
||||
return errors.New("optimizations caused a verification failure")
|
||||
@@ -115,35 +74,272 @@ func (c *Compiler) Optimize(optLevel, sizeLevel int, inlinerThreshold uint) erro
|
||||
}
|
||||
}
|
||||
|
||||
// After TinyGo-specific transforms have finished, undo exporting these functions.
|
||||
for _, name := range c.getFunctionsUsedInTransforms() {
|
||||
fn := c.mod.NamedFunction(name)
|
||||
if fn.IsNil() {
|
||||
continue
|
||||
}
|
||||
fn.SetLinkage(llvm.InternalLinkage)
|
||||
}
|
||||
|
||||
// Run function passes again, because without it, llvm.coro.size.i32()
|
||||
// doesn't get lowered.
|
||||
for fn := c.mod.FirstFunction(); !fn.IsNil(); fn = llvm.NextFunction(fn) {
|
||||
funcPasses.RunFunc(fn)
|
||||
}
|
||||
funcPasses.FinalizeFunc()
|
||||
|
||||
// Run module passes.
|
||||
modPasses := llvm.NewPassManager()
|
||||
defer modPasses.Dispose()
|
||||
builder.Populate(modPasses)
|
||||
modPasses.Run(c.mod)
|
||||
|
||||
hasGCPass := transform.AddGlobalsBitmap(c.mod)
|
||||
hasGCPass = transform.MakeGCStackSlots(c.mod) || hasGCPass
|
||||
if hasGCPass {
|
||||
if err := c.Verify(); err != nil {
|
||||
return errors.New("GC pass caused a verification failure")
|
||||
return nil
|
||||
}
|
||||
|
||||
// Eliminate created but not used maps.
|
||||
//
|
||||
// In the future, this should statically allocate created but never modified
|
||||
// maps. This has not yet been implemented, however.
|
||||
func (c *Compiler) OptimizeMaps() {
|
||||
hashmapMake := c.mod.NamedFunction("runtime.hashmapMake")
|
||||
if hashmapMake.IsNil() {
|
||||
// nothing to optimize
|
||||
return
|
||||
}
|
||||
|
||||
hashmapBinarySet := c.mod.NamedFunction("runtime.hashmapBinarySet")
|
||||
hashmapStringSet := c.mod.NamedFunction("runtime.hashmapStringSet")
|
||||
|
||||
for _, makeInst := range getUses(hashmapMake) {
|
||||
updateInsts := []llvm.Value{}
|
||||
unknownUses := false // are there any uses other than setting a value?
|
||||
|
||||
for _, use := range getUses(makeInst) {
|
||||
if use := use.IsACallInst(); !use.IsNil() {
|
||||
switch use.CalledValue() {
|
||||
case hashmapBinarySet, hashmapStringSet:
|
||||
updateInsts = append(updateInsts, use)
|
||||
default:
|
||||
unknownUses = true
|
||||
}
|
||||
} else {
|
||||
unknownUses = true
|
||||
}
|
||||
}
|
||||
|
||||
if !unknownUses {
|
||||
// This map can be entirely removed, as it is only created but never
|
||||
// used.
|
||||
for _, inst := range updateInsts {
|
||||
inst.EraseFromParentAsInstruction()
|
||||
}
|
||||
makeInst.EraseFromParentAsInstruction()
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Transform runtime.stringToBytes(...) calls into const []byte slices whenever
|
||||
// possible. This optimizes the following pattern:
|
||||
// w.Write([]byte("foo"))
|
||||
// where Write does not store to the slice.
|
||||
func (c *Compiler) OptimizeStringToBytes() {
|
||||
stringToBytes := c.mod.NamedFunction("runtime.stringToBytes")
|
||||
if stringToBytes.IsNil() {
|
||||
// nothing to optimize
|
||||
return
|
||||
}
|
||||
|
||||
for _, call := range getUses(stringToBytes) {
|
||||
strptr := call.Operand(0)
|
||||
strlen := call.Operand(1)
|
||||
|
||||
// strptr is always constant because strings are always constant.
|
||||
|
||||
convertedAllUses := true
|
||||
for _, use := range getUses(call) {
|
||||
nilValue := llvm.Value{}
|
||||
if use.IsAExtractValueInst() == nilValue {
|
||||
convertedAllUses = false
|
||||
continue
|
||||
}
|
||||
switch use.Type().TypeKind() {
|
||||
case llvm.IntegerTypeKind:
|
||||
// A length (len or cap). Propagate the length value.
|
||||
use.ReplaceAllUsesWith(strlen)
|
||||
use.EraseFromParentAsInstruction()
|
||||
case llvm.PointerTypeKind:
|
||||
// The string pointer itself.
|
||||
if !c.isReadOnly(use) {
|
||||
convertedAllUses = false
|
||||
continue
|
||||
}
|
||||
use.ReplaceAllUsesWith(strptr)
|
||||
use.EraseFromParentAsInstruction()
|
||||
default:
|
||||
// should not happen
|
||||
panic("unknown return type of runtime.stringToBytes: " + use.Type().String())
|
||||
}
|
||||
}
|
||||
if convertedAllUses {
|
||||
// Call to runtime.stringToBytes can be eliminated: both the input
|
||||
// and the output is constant.
|
||||
call.EraseFromParentAsInstruction()
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Basic escape analysis: translate runtime.alloc calls into alloca
|
||||
// instructions.
|
||||
func (c *Compiler) OptimizeAllocs() {
|
||||
allocator := c.mod.NamedFunction("runtime.alloc")
|
||||
if allocator.IsNil() {
|
||||
// nothing to optimize
|
||||
return
|
||||
}
|
||||
|
||||
heapallocs := getUses(allocator)
|
||||
for _, heapalloc := range heapallocs {
|
||||
nilValue := llvm.Value{}
|
||||
if heapalloc.Operand(0).IsAConstant() == nilValue {
|
||||
// Do not allocate variable length arrays on the stack.
|
||||
continue
|
||||
}
|
||||
size := heapalloc.Operand(0).ZExtValue()
|
||||
if size > 256 {
|
||||
// The maximum value for a stack allocation.
|
||||
// TODO: tune this, this is just a random value.
|
||||
continue
|
||||
}
|
||||
|
||||
// In general the pattern is:
|
||||
// %0 = call i8* @runtime.alloc(i32 %size)
|
||||
// %1 = bitcast i8* %0 to type*
|
||||
// (use %1 only)
|
||||
// But the bitcast might sometimes be dropped when allocating an *i8.
|
||||
// The 'bitcast' variable below is thus usually a bitcast of the
|
||||
// heapalloc but not always.
|
||||
bitcast := heapalloc // instruction that creates the value
|
||||
if uses := getUses(heapalloc); len(uses) == 1 && uses[0].IsABitCastInst() != nilValue {
|
||||
// getting only bitcast use
|
||||
bitcast = uses[0]
|
||||
}
|
||||
if !c.doesEscape(bitcast) {
|
||||
// Insert alloca in the entry block. Do it here so that mem2reg can
|
||||
// promote it to a SSA value.
|
||||
fn := bitcast.InstructionParent().Parent()
|
||||
c.builder.SetInsertPointBefore(fn.EntryBasicBlock().FirstInstruction())
|
||||
alignment := c.targetData.ABITypeAlignment(c.i8ptrType)
|
||||
sizeInWords := (size + uint64(alignment) - 1) / uint64(alignment)
|
||||
allocaType := llvm.ArrayType(c.ctx.IntType(alignment*8), int(sizeInWords))
|
||||
alloca := c.builder.CreateAlloca(allocaType, "stackalloc.alloca")
|
||||
zero, _ := c.getZeroValue(alloca.Type().ElementType())
|
||||
c.builder.CreateStore(zero, alloca)
|
||||
stackalloc := c.builder.CreateBitCast(alloca, bitcast.Type(), "stackalloc")
|
||||
bitcast.ReplaceAllUsesWith(stackalloc)
|
||||
if heapalloc != bitcast {
|
||||
bitcast.EraseFromParentAsInstruction()
|
||||
}
|
||||
heapalloc.EraseFromParentAsInstruction()
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Very basic escape analysis.
|
||||
func (c *Compiler) doesEscape(value llvm.Value) bool {
|
||||
uses := getUses(value)
|
||||
for _, use := range uses {
|
||||
nilValue := llvm.Value{}
|
||||
if use.IsAGetElementPtrInst() != nilValue {
|
||||
if c.doesEscape(use) {
|
||||
return true
|
||||
}
|
||||
} else if use.IsABitCastInst() != nilValue {
|
||||
// A bitcast escapes if the casted-to value escapes.
|
||||
if c.doesEscape(use) {
|
||||
return true
|
||||
}
|
||||
} else if use.IsALoadInst() != nilValue {
|
||||
// Load does not escape.
|
||||
} else if use.IsAStoreInst() != nilValue {
|
||||
// Store only escapes when the value is stored to, not when the
|
||||
// value is stored into another value.
|
||||
if use.Operand(0) == value {
|
||||
return true
|
||||
}
|
||||
} else if use.IsACallInst() != nilValue {
|
||||
// Call only escapes when the (pointer) parameter is not marked
|
||||
// "nocapture". This flag means that the parameter does not escape
|
||||
// the give function.
|
||||
if use.CalledValue().IsAFunction() != nilValue {
|
||||
if use.CalledValue().IsDeclaration() {
|
||||
// Kind of dirty: assume external functions don't let
|
||||
// pointers escape.
|
||||
// TODO: introduce //go:noescape that sets the 'nocapture'
|
||||
// flag on each input parameter.
|
||||
continue
|
||||
}
|
||||
}
|
||||
if !c.hasFlag(use, value, "nocapture") {
|
||||
return true
|
||||
}
|
||||
} else {
|
||||
// Unknown instruction, might escape.
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
// does not escape
|
||||
return false
|
||||
}
|
||||
|
||||
// Check whether the given value (which is of pointer type) is never stored to.
|
||||
func (c *Compiler) isReadOnly(value llvm.Value) bool {
|
||||
uses := getUses(value)
|
||||
for _, use := range uses {
|
||||
nilValue := llvm.Value{}
|
||||
if use.IsAGetElementPtrInst() != nilValue {
|
||||
if !c.isReadOnly(use) {
|
||||
return false
|
||||
}
|
||||
} else if use.IsACallInst() != nilValue {
|
||||
if !c.hasFlag(use, value, "readonly") {
|
||||
return false
|
||||
}
|
||||
} else {
|
||||
// Unknown instruction, might not be readonly.
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// Check whether all uses of this param as parameter to the call have the given
|
||||
// flag. In most cases, there will only be one use but a function could take the
|
||||
// same parameter twice, in which case both must have the flag.
|
||||
// A flag can be any enum flag, like "readonly".
|
||||
func (c *Compiler) hasFlag(call, param llvm.Value, kind string) bool {
|
||||
fn := call.CalledValue()
|
||||
nilValue := llvm.Value{}
|
||||
if fn.IsAFunction() == nilValue {
|
||||
// This is not a function but something else, like a function pointer.
|
||||
return false
|
||||
}
|
||||
kindID := llvm.AttributeKindID(kind)
|
||||
for i := 0; i < fn.ParamsCount(); i++ {
|
||||
if call.Operand(i) != param {
|
||||
// This is not the parameter we're checking.
|
||||
continue
|
||||
}
|
||||
index := i + 1 // param attributes start at 1
|
||||
attr := fn.GetEnumAttributeAtIndex(index, kindID)
|
||||
nilAttribute := llvm.Attribute{}
|
||||
if attr == nilAttribute {
|
||||
// At least one parameter doesn't have the flag (there may be
|
||||
// multiple).
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// Return a list of values (actually, instructions) where this value is used as
|
||||
// an operand.
|
||||
func getUses(value llvm.Value) []llvm.Value {
|
||||
if value.IsNil() {
|
||||
return nil
|
||||
}
|
||||
var uses []llvm.Value
|
||||
use := value.FirstUse()
|
||||
for !use.IsNil() {
|
||||
uses = append(uses, use.User())
|
||||
use = use.NextUse()
|
||||
}
|
||||
return uses
|
||||
}
|
||||
|
||||
+2
-15
@@ -107,9 +107,6 @@ func (s *StdSizes) Sizeof(T types.Type) int64 {
|
||||
if k == types.Uintptr {
|
||||
return s.PtrSize
|
||||
}
|
||||
if k == types.UnsafePointer {
|
||||
return s.PtrSize
|
||||
}
|
||||
panic("unknown basic type: " + t.String())
|
||||
case *types.Array:
|
||||
n := t.Len()
|
||||
@@ -128,21 +125,11 @@ func (s *StdSizes) Sizeof(T types.Type) int64 {
|
||||
return 0
|
||||
}
|
||||
fields := make([]*types.Var, t.NumFields())
|
||||
maxAlign := int64(1)
|
||||
for i := range fields {
|
||||
field := t.Field(i)
|
||||
fields[i] = field
|
||||
al := s.Alignof(field.Type())
|
||||
if al > maxAlign {
|
||||
maxAlign = al
|
||||
}
|
||||
fields[i] = t.Field(i)
|
||||
}
|
||||
// Pick the size that fits this struct and add some alignment. Some
|
||||
// structs have some extra padding at the end which should also be taken
|
||||
// care of:
|
||||
// struct { int32 n; byte b }
|
||||
offsets := s.Offsetsof(fields)
|
||||
return align(offsets[n-1]+s.Sizeof(fields[n-1].Type()), maxAlign)
|
||||
return offsets[n-1] + s.Sizeof(fields[n-1].Type())
|
||||
case *types.Interface:
|
||||
return s.PtrSize * 2
|
||||
case *types.Pointer:
|
||||
|
||||
@@ -1,117 +0,0 @@
|
||||
package compiler
|
||||
|
||||
// This file manages symbols, that is, functions and globals. It reads their
|
||||
// pragmas, determines the link name, etc.
|
||||
|
||||
import (
|
||||
"go/ast"
|
||||
"go/token"
|
||||
"go/types"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"github.com/tinygo-org/tinygo/loader"
|
||||
"golang.org/x/tools/go/ssa"
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
// globalInfo contains some information about a specific global. By default,
|
||||
// linkName is equal to .RelString(nil) on a global and extern is false, but for
|
||||
// some symbols this is different (due to //go:extern for example).
|
||||
type globalInfo struct {
|
||||
linkName string // go:extern
|
||||
extern bool // go:extern
|
||||
align int // go:align
|
||||
}
|
||||
|
||||
// loadASTComments loads comments on globals from the AST, for use later in the
|
||||
// program. In particular, they are required for //go:extern pragmas on globals.
|
||||
func (c *Compiler) loadASTComments(lprogram *loader.Program) {
|
||||
c.astComments = map[string]*ast.CommentGroup{}
|
||||
for _, pkgInfo := range lprogram.Sorted() {
|
||||
for _, file := range pkgInfo.Files {
|
||||
for _, decl := range file.Decls {
|
||||
switch decl := decl.(type) {
|
||||
case *ast.GenDecl:
|
||||
switch decl.Tok {
|
||||
case token.VAR:
|
||||
if len(decl.Specs) != 1 {
|
||||
continue
|
||||
}
|
||||
for _, spec := range decl.Specs {
|
||||
switch spec := spec.(type) {
|
||||
case *ast.ValueSpec: // decl.Tok == token.VAR
|
||||
for _, name := range spec.Names {
|
||||
id := pkgInfo.Pkg.Path() + "." + name.Name
|
||||
c.astComments[id] = decl.Doc
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// getGlobal returns a LLVM IR global value for a Go SSA global. It is added to
|
||||
// the LLVM IR if it has not been added already.
|
||||
func (c *Compiler) getGlobal(g *ssa.Global) llvm.Value {
|
||||
info := c.getGlobalInfo(g)
|
||||
llvmGlobal := c.mod.NamedGlobal(info.linkName)
|
||||
if llvmGlobal.IsNil() {
|
||||
llvmType := c.getLLVMType(g.Type().(*types.Pointer).Elem())
|
||||
llvmGlobal = llvm.AddGlobal(c.mod, llvmType, info.linkName)
|
||||
if !info.extern {
|
||||
llvmGlobal.SetInitializer(llvm.ConstNull(llvmType))
|
||||
llvmGlobal.SetLinkage(llvm.InternalLinkage)
|
||||
}
|
||||
if info.align > c.targetData.ABITypeAlignment(llvmType) {
|
||||
llvmGlobal.SetAlignment(info.align)
|
||||
}
|
||||
}
|
||||
return llvmGlobal
|
||||
}
|
||||
|
||||
// getGlobalInfo returns some information about a specific global.
|
||||
func (c *Compiler) getGlobalInfo(g *ssa.Global) globalInfo {
|
||||
info := globalInfo{}
|
||||
if strings.HasPrefix(g.Name(), "C.") {
|
||||
// Created by CGo: such a name cannot be created by regular C code.
|
||||
info.linkName = g.Name()[2:]
|
||||
info.extern = true
|
||||
} else {
|
||||
// Pick the default linkName.
|
||||
info.linkName = g.RelString(nil)
|
||||
// Check for //go: pragmas, which may change the link name (among
|
||||
// others).
|
||||
doc := c.astComments[info.linkName]
|
||||
if doc != nil {
|
||||
info.parsePragmas(doc)
|
||||
}
|
||||
}
|
||||
return info
|
||||
}
|
||||
|
||||
// Parse //go: pragma comments from the source. In particular, it parses the
|
||||
// //go:extern pragma on globals.
|
||||
func (info *globalInfo) parsePragmas(doc *ast.CommentGroup) {
|
||||
for _, comment := range doc.List {
|
||||
if !strings.HasPrefix(comment.Text, "//go:") {
|
||||
continue
|
||||
}
|
||||
parts := strings.Fields(comment.Text)
|
||||
switch parts[0] {
|
||||
case "//go:extern":
|
||||
info.extern = true
|
||||
if len(parts) == 2 {
|
||||
info.linkName = parts[1]
|
||||
}
|
||||
case "//go:align":
|
||||
align, err := strconv.Atoi(parts[1])
|
||||
if err == nil {
|
||||
info.align = align
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
@@ -1,192 +0,0 @@
|
||||
package compiler
|
||||
|
||||
// This file implements the syscall.Syscall and syscall.Syscall6 instructions as
|
||||
// compiler builtins.
|
||||
|
||||
import (
|
||||
"strconv"
|
||||
|
||||
"golang.org/x/tools/go/ssa"
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
// emitSyscall emits an inline system call instruction, depending on the target
|
||||
// OS/arch.
|
||||
func (c *Compiler) emitSyscall(frame *Frame, call *ssa.CallCommon) (llvm.Value, error) {
|
||||
num := c.getValue(frame, call.Args[0])
|
||||
var syscallResult llvm.Value
|
||||
switch {
|
||||
case c.GOARCH() == "amd64":
|
||||
if c.GOOS() == "darwin" {
|
||||
// Darwin adds this magic number to system call numbers:
|
||||
//
|
||||
// > Syscall classes for 64-bit system call entry.
|
||||
// > For 64-bit users, the 32-bit syscall number is partitioned
|
||||
// > with the high-order bits representing the class and low-order
|
||||
// > bits being the syscall number within that class.
|
||||
// > The high-order 32-bits of the 64-bit syscall number are unused.
|
||||
// > All system classes enter the kernel via the syscall instruction.
|
||||
//
|
||||
// Source: https://opensource.apple.com/source/xnu/xnu-792.13.8/osfmk/mach/i386/syscall_sw.h
|
||||
num = c.builder.CreateOr(num, llvm.ConstInt(c.uintptrType, 0x2000000, false), "")
|
||||
}
|
||||
// Sources:
|
||||
// https://stackoverflow.com/a/2538212
|
||||
// https://en.wikibooks.org/wiki/X86_Assembly/Interfacing_with_Linux#syscall
|
||||
args := []llvm.Value{num}
|
||||
argTypes := []llvm.Type{c.uintptrType}
|
||||
// Constraints will look something like:
|
||||
// "={rax},0,{rdi},{rsi},{rdx},{r10},{r8},{r9},~{rcx},~{r11}"
|
||||
constraints := "={rax},0"
|
||||
for i, arg := range call.Args[1:] {
|
||||
constraints += "," + [...]string{
|
||||
"{rdi}",
|
||||
"{rsi}",
|
||||
"{rdx}",
|
||||
"{r10}",
|
||||
"{r8}",
|
||||
"{r9}",
|
||||
"{r11}",
|
||||
"{r12}",
|
||||
"{r13}",
|
||||
}[i]
|
||||
llvmValue := c.getValue(frame, arg)
|
||||
args = append(args, llvmValue)
|
||||
argTypes = append(argTypes, llvmValue.Type())
|
||||
}
|
||||
constraints += ",~{rcx},~{r11}"
|
||||
fnType := llvm.FunctionType(c.uintptrType, argTypes, false)
|
||||
target := llvm.InlineAsm(fnType, "syscall", constraints, true, false, llvm.InlineAsmDialectIntel)
|
||||
syscallResult = c.builder.CreateCall(target, args, "")
|
||||
case c.GOARCH() == "386" && c.GOOS() == "linux":
|
||||
// Sources:
|
||||
// syscall(2) man page
|
||||
// https://stackoverflow.com/a/2538212
|
||||
// https://en.wikibooks.org/wiki/X86_Assembly/Interfacing_with_Linux#int_0x80
|
||||
args := []llvm.Value{num}
|
||||
argTypes := []llvm.Type{c.uintptrType}
|
||||
// Constraints will look something like:
|
||||
// "={eax},0,{ebx},{ecx},{edx},{esi},{edi},{ebp}"
|
||||
constraints := "={eax},0"
|
||||
for i, arg := range call.Args[1:] {
|
||||
constraints += "," + [...]string{
|
||||
"{ebx}",
|
||||
"{ecx}",
|
||||
"{edx}",
|
||||
"{esi}",
|
||||
"{edi}",
|
||||
"{ebp}",
|
||||
}[i]
|
||||
llvmValue := c.getValue(frame, arg)
|
||||
args = append(args, llvmValue)
|
||||
argTypes = append(argTypes, llvmValue.Type())
|
||||
}
|
||||
fnType := llvm.FunctionType(c.uintptrType, argTypes, false)
|
||||
target := llvm.InlineAsm(fnType, "int 0x80", constraints, true, false, llvm.InlineAsmDialectIntel)
|
||||
syscallResult = c.builder.CreateCall(target, args, "")
|
||||
case c.GOARCH() == "arm" && c.GOOS() == "linux":
|
||||
// Implement the EABI system call convention for Linux.
|
||||
// Source: syscall(2) man page.
|
||||
args := []llvm.Value{}
|
||||
argTypes := []llvm.Type{}
|
||||
// Constraints will look something like:
|
||||
// ={r0},0,{r1},{r2},{r7},~{r3}
|
||||
constraints := "={r0}"
|
||||
for i, arg := range call.Args[1:] {
|
||||
constraints += "," + [...]string{
|
||||
"0", // tie to output
|
||||
"{r1}",
|
||||
"{r2}",
|
||||
"{r3}",
|
||||
"{r4}",
|
||||
"{r5}",
|
||||
"{r6}",
|
||||
}[i]
|
||||
llvmValue := c.getValue(frame, arg)
|
||||
args = append(args, llvmValue)
|
||||
argTypes = append(argTypes, llvmValue.Type())
|
||||
}
|
||||
args = append(args, num)
|
||||
argTypes = append(argTypes, c.uintptrType)
|
||||
constraints += ",{r7}" // syscall number
|
||||
for i := len(call.Args) - 1; i < 4; i++ {
|
||||
// r0-r3 get clobbered after the syscall returns
|
||||
constraints += ",~{r" + strconv.Itoa(i) + "}"
|
||||
}
|
||||
fnType := llvm.FunctionType(c.uintptrType, argTypes, false)
|
||||
target := llvm.InlineAsm(fnType, "svc #0", constraints, true, false, 0)
|
||||
syscallResult = c.builder.CreateCall(target, args, "")
|
||||
case c.GOARCH() == "arm64" && c.GOOS() == "linux":
|
||||
// Source: syscall(2) man page.
|
||||
args := []llvm.Value{}
|
||||
argTypes := []llvm.Type{}
|
||||
// Constraints will look something like:
|
||||
// ={x0},0,{x1},{x2},{x8},~{x3},~{x4},~{x5},~{x6},~{x7},~{x16},~{x17}
|
||||
constraints := "={x0}"
|
||||
for i, arg := range call.Args[1:] {
|
||||
constraints += "," + [...]string{
|
||||
"0", // tie to output
|
||||
"{x1}",
|
||||
"{x2}",
|
||||
"{x3}",
|
||||
"{x4}",
|
||||
"{x5}",
|
||||
}[i]
|
||||
llvmValue := c.getValue(frame, arg)
|
||||
args = append(args, llvmValue)
|
||||
argTypes = append(argTypes, llvmValue.Type())
|
||||
}
|
||||
args = append(args, num)
|
||||
argTypes = append(argTypes, c.uintptrType)
|
||||
constraints += ",{x8}" // syscall number
|
||||
for i := len(call.Args) - 1; i < 8; i++ {
|
||||
// x0-x7 may get clobbered during the syscall following the aarch64
|
||||
// calling convention.
|
||||
constraints += ",~{x" + strconv.Itoa(i) + "}"
|
||||
}
|
||||
constraints += ",~{x16},~{x17}" // scratch registers
|
||||
fnType := llvm.FunctionType(c.uintptrType, argTypes, false)
|
||||
target := llvm.InlineAsm(fnType, "svc #0", constraints, true, false, 0)
|
||||
syscallResult = c.builder.CreateCall(target, args, "")
|
||||
default:
|
||||
return llvm.Value{}, c.makeError(call.Pos(), "unknown GOOS/GOARCH for syscall: "+c.GOOS()+"/"+c.GOARCH())
|
||||
}
|
||||
switch c.GOOS() {
|
||||
case "linux":
|
||||
// Return values: r0, r1 uintptr, err Errno
|
||||
// Pseudocode:
|
||||
// var err uintptr
|
||||
// if syscallResult < 0 && syscallResult > -4096 {
|
||||
// err = -syscallResult
|
||||
// }
|
||||
// return syscallResult, 0, err
|
||||
zero := llvm.ConstInt(c.uintptrType, 0, false)
|
||||
inrange1 := c.builder.CreateICmp(llvm.IntSLT, syscallResult, llvm.ConstInt(c.uintptrType, 0, false), "")
|
||||
inrange2 := c.builder.CreateICmp(llvm.IntSGT, syscallResult, llvm.ConstInt(c.uintptrType, 0xfffffffffffff000, true), "") // -4096
|
||||
hasError := c.builder.CreateAnd(inrange1, inrange2, "")
|
||||
errResult := c.builder.CreateSelect(hasError, c.builder.CreateSub(zero, syscallResult, ""), zero, "syscallError")
|
||||
retval := llvm.Undef(c.ctx.StructType([]llvm.Type{c.uintptrType, c.uintptrType, c.uintptrType}, false))
|
||||
retval = c.builder.CreateInsertValue(retval, syscallResult, 0, "")
|
||||
retval = c.builder.CreateInsertValue(retval, zero, 1, "")
|
||||
retval = c.builder.CreateInsertValue(retval, errResult, 2, "")
|
||||
return retval, nil
|
||||
case "darwin":
|
||||
// Return values: r0, r1 uintptr, err Errno
|
||||
// Pseudocode:
|
||||
// var err uintptr
|
||||
// if syscallResult != 0 {
|
||||
// err = syscallResult
|
||||
// }
|
||||
// return syscallResult, 0, err
|
||||
zero := llvm.ConstInt(c.uintptrType, 0, false)
|
||||
hasError := c.builder.CreateICmp(llvm.IntNE, syscallResult, llvm.ConstInt(c.uintptrType, 0, false), "")
|
||||
errResult := c.builder.CreateSelect(hasError, syscallResult, zero, "syscallError")
|
||||
retval := llvm.Undef(c.ctx.StructType([]llvm.Type{c.uintptrType, c.uintptrType, c.uintptrType}, false))
|
||||
retval = c.builder.CreateInsertValue(retval, syscallResult, 0, "")
|
||||
retval = c.builder.CreateInsertValue(retval, zero, 1, "")
|
||||
retval = c.builder.CreateInsertValue(retval, errResult, 2, "")
|
||||
return retval, nil
|
||||
default:
|
||||
return llvm.Value{}, c.makeError(call.Pos(), "unknown GOOS/GOARCH for syscall: "+c.GOOS()+"/"+c.GOARCH())
|
||||
}
|
||||
}
|
||||
@@ -1,26 +0,0 @@
|
||||
package compiler
|
||||
|
||||
// This file implements volatile loads/stores in runtime/volatile.LoadT and
|
||||
// runtime/volatile.StoreT as compiler builtins.
|
||||
|
||||
import (
|
||||
"golang.org/x/tools/go/ssa"
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
func (c *Compiler) emitVolatileLoad(frame *Frame, instr *ssa.CallCommon) (llvm.Value, error) {
|
||||
addr := c.getValue(frame, instr.Args[0])
|
||||
c.emitNilCheck(frame, addr, "deref")
|
||||
val := c.builder.CreateLoad(addr, "")
|
||||
val.SetVolatile(true)
|
||||
return val, nil
|
||||
}
|
||||
|
||||
func (c *Compiler) emitVolatileStore(frame *Frame, instr *ssa.CallCommon) (llvm.Value, error) {
|
||||
addr := c.getValue(frame, instr.Args[0])
|
||||
val := c.getValue(frame, instr.Args[1])
|
||||
c.emitNilCheck(frame, addr, "deref")
|
||||
store := c.builder.CreateStore(val, addr)
|
||||
store.SetVolatile(true)
|
||||
return llvm.Value{}, nil
|
||||
}
|
||||
@@ -1,14 +0,0 @@
|
||||
module github.com/tinygo-org/tinygo
|
||||
|
||||
go 1.11
|
||||
|
||||
require (
|
||||
github.com/blakesmith/ar v0.0.0-20150311145944-8bd4349a67f2
|
||||
github.com/creack/goselect v0.1.0 // indirect
|
||||
github.com/google/shlex v0.0.0-20181106134648-c34317bd91bf
|
||||
github.com/marcinbor85/gohex v0.0.0-20180128172054-7a43cd876e46
|
||||
go.bug.st/serial.v1 v0.0.0-20180827123349-5f7892a7bb45
|
||||
golang.org/x/sys v0.0.0-20191010194322-b09406accb47 // indirect
|
||||
golang.org/x/tools v0.0.0-20190227180812-8dcc6e70cdef
|
||||
tinygo.org/x/go-llvm v0.0.0-20191124211856-b2db3df3f257
|
||||
)
|
||||
@@ -1,32 +0,0 @@
|
||||
github.com/blakesmith/ar v0.0.0-20150311145944-8bd4349a67f2 h1:oMCHnXa6CCCafdPDbMh/lWRhRByN0VFLvv+g+ayx1SI=
|
||||
github.com/blakesmith/ar v0.0.0-20150311145944-8bd4349a67f2/go.mod h1:PkYb9DJNAwrSvRx5DYA+gUcOIgTGVMNkfSCbZM8cWpI=
|
||||
github.com/creack/goselect v0.1.0 h1:4QiXIhcpSQF50XGaBsFzesjwX/1qOY5bOveQPmN9CXY=
|
||||
github.com/creack/goselect v0.1.0/go.mod h1:gHrIcH/9UZDn2qgeTUeW5K9eZsVYCH6/60J/FHysWyE=
|
||||
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
|
||||
github.com/google/shlex v0.0.0-20181106134648-c34317bd91bf h1:7+FW5aGwISbqUtkfmIpZJGRgNFg2ioYPvFaUxdqpDsg=
|
||||
github.com/google/shlex v0.0.0-20181106134648-c34317bd91bf/go.mod h1:RpwtwJQFrIEPstU94h88MWPXP2ektJZ8cZ0YntAmXiE=
|
||||
github.com/marcinbor85/gohex v0.0.0-20180128172054-7a43cd876e46 h1:wXG2bA8fO7Vv7lLk2PihFMTqmbT173Tje39oKzQ50Mo=
|
||||
github.com/marcinbor85/gohex v0.0.0-20180128172054-7a43cd876e46/go.mod h1:Pb6XcsXyropB9LNHhnqaknG/vEwYztLkQzVCHv8sQ3M=
|
||||
go.bug.st/serial.v1 v0.0.0-20180827123349-5f7892a7bb45 h1:mACY1anK6HNCZtm/DK2Rf2ZPHggVqeB0+7rY9Gl6wyI=
|
||||
go.bug.st/serial.v1 v0.0.0-20180827123349-5f7892a7bb45/go.mod h1:dRSl/CVCTf56CkXgJMDOdSwNfo2g1orOGE/gBGdvjZw=
|
||||
golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
|
||||
golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
|
||||
golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
|
||||
golang.org/x/sys v0.0.0-20191010194322-b09406accb47 h1:/XfQ9z7ib8eEJX2hdgFTZJ/ntt0swNk5oYBziWeTCvY=
|
||||
golang.org/x/sys v0.0.0-20191010194322-b09406accb47/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
|
||||
golang.org/x/tools v0.0.0-20190227180812-8dcc6e70cdef h1:ymc9FeDom3RIEA3coKokSllBB1hRcMT0tZ1W3Jf9Ids=
|
||||
golang.org/x/tools v0.0.0-20190227180812-8dcc6e70cdef/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
|
||||
google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
|
||||
tinygo.org/x/go-llvm v0.0.0-20190224120431-7707ae5d1261 h1:rJS2Hga39YAnm7DE4qrPm6Dr/67EOojL0XPzvbEeBiw=
|
||||
tinygo.org/x/go-llvm v0.0.0-20190224120431-7707ae5d1261/go.mod h1:fv1F0BSNpxMfCL0zF3M4OPFbgYHnhtB6ST0HvUtu/LE=
|
||||
tinygo.org/x/go-llvm v0.0.0-20190818154551-95bc4ffe1add h1:dFjMH1sLhYADg8UQm7DB56B7e+TfvAmWmEZLhyv3r/w=
|
||||
tinygo.org/x/go-llvm v0.0.0-20190818154551-95bc4ffe1add/go.mod h1:fv1F0BSNpxMfCL0zF3M4OPFbgYHnhtB6ST0HvUtu/LE=
|
||||
tinygo.org/x/go-llvm v0.0.0-20191103182207-90b6e4bdc0b9 h1:d6rAX39a3C0pKrY5HcojEGyN8w9ocU0v7X28lC/TRKU=
|
||||
tinygo.org/x/go-llvm v0.0.0-20191103182207-90b6e4bdc0b9/go.mod h1:fv1F0BSNpxMfCL0zF3M4OPFbgYHnhtB6ST0HvUtu/LE=
|
||||
tinygo.org/x/go-llvm v0.0.0-20191103200204-37e93e3f04e2 h1:Q5Hv3e5cLMGkiYwYgZL1Zrv6nb/EY+DJpRWrdO6ws6o=
|
||||
tinygo.org/x/go-llvm v0.0.0-20191103200204-37e93e3f04e2/go.mod h1:fv1F0BSNpxMfCL0zF3M4OPFbgYHnhtB6ST0HvUtu/LE=
|
||||
tinygo.org/x/go-llvm v0.0.0-20191113125529-bad6d01809e8 h1:9Bfvso+tTVQg16UzOA614NaYA4x8vsRBNtd3eBrXwp0=
|
||||
tinygo.org/x/go-llvm v0.0.0-20191113125529-bad6d01809e8/go.mod h1:fv1F0BSNpxMfCL0zF3M4OPFbgYHnhtB6ST0HvUtu/LE=
|
||||
tinygo.org/x/go-llvm v0.0.0-20191124211856-b2db3df3f257 h1:o8VDylrMN7gWemBMu8rEyuogKPhcLTdx5KrUAp9macc=
|
||||
tinygo.org/x/go-llvm v0.0.0-20191124211856-b2db3df3f257/go.mod h1:fv1F0BSNpxMfCL0zF3M4OPFbgYHnhtB6ST0HvUtu/LE=
|
||||
-189
@@ -1,189 +0,0 @@
|
||||
// Package goenv returns environment variables that are used in various parts of
|
||||
// the compiler. You can query it manually with the `tinygo env` subcommand.
|
||||
package goenv
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"os"
|
||||
"os/exec"
|
||||
"os/user"
|
||||
"path/filepath"
|
||||
"runtime"
|
||||
)
|
||||
|
||||
// Keys is a slice of all available environment variable keys.
|
||||
var Keys = []string{
|
||||
"GOOS",
|
||||
"GOARCH",
|
||||
"GOROOT",
|
||||
"GOPATH",
|
||||
"GOCACHE",
|
||||
"TINYGOROOT",
|
||||
}
|
||||
|
||||
// TINYGOROOT is the path to the final location for checking tinygo files. If
|
||||
// unset (by a -X ldflag), then sourceDir() will fallback to the original build
|
||||
// directory.
|
||||
var TINYGOROOT string
|
||||
|
||||
// Get returns a single environment variable, possibly calculating it on-demand.
|
||||
// The empty string is returned for unknown environment variables.
|
||||
func Get(name string) string {
|
||||
switch name {
|
||||
case "GOOS":
|
||||
if dir := os.Getenv("GOOS"); dir != "" {
|
||||
return dir
|
||||
}
|
||||
return runtime.GOOS
|
||||
case "GOARCH":
|
||||
if dir := os.Getenv("GOARCH"); dir != "" {
|
||||
return dir
|
||||
}
|
||||
return runtime.GOARCH
|
||||
case "GOROOT":
|
||||
return getGoroot()
|
||||
case "GOPATH":
|
||||
if dir := os.Getenv("GOPATH"); dir != "" {
|
||||
return dir
|
||||
}
|
||||
|
||||
// fallback
|
||||
home := getHomeDir()
|
||||
return filepath.Join(home, "go")
|
||||
case "GOCACHE":
|
||||
// Get the cache directory, usually ~/.cache/tinygo
|
||||
dir, err := os.UserCacheDir()
|
||||
if err != nil {
|
||||
panic("could not find cache dir: " + err.Error())
|
||||
}
|
||||
return filepath.Join(dir, "tinygo")
|
||||
case "TINYGOROOT":
|
||||
return sourceDir()
|
||||
default:
|
||||
return ""
|
||||
}
|
||||
}
|
||||
|
||||
// Return the TINYGOROOT, or exit with an error.
|
||||
func sourceDir() string {
|
||||
// Use $TINYGOROOT as root, if available.
|
||||
root := os.Getenv("TINYGOROOT")
|
||||
if root != "" {
|
||||
if !isSourceDir(root) {
|
||||
fmt.Fprintln(os.Stderr, "error: $TINYGOROOT was not set to the correct root")
|
||||
os.Exit(1)
|
||||
}
|
||||
return root
|
||||
}
|
||||
|
||||
if TINYGOROOT != "" {
|
||||
if !isSourceDir(TINYGOROOT) {
|
||||
fmt.Fprintln(os.Stderr, "error: TINYGOROOT was not set to the correct root")
|
||||
os.Exit(1)
|
||||
}
|
||||
return TINYGOROOT
|
||||
}
|
||||
|
||||
// Find root from executable path.
|
||||
path, err := os.Executable()
|
||||
if err != nil {
|
||||
// Very unlikely. Bail out if it happens.
|
||||
panic("could not get executable path: " + err.Error())
|
||||
}
|
||||
root = filepath.Dir(filepath.Dir(path))
|
||||
if isSourceDir(root) {
|
||||
return root
|
||||
}
|
||||
|
||||
// Fallback: use the original directory from where it was built
|
||||
// https://stackoverflow.com/a/32163888/559350
|
||||
_, path, _, _ = runtime.Caller(0)
|
||||
root = filepath.Dir(filepath.Dir(path))
|
||||
if isSourceDir(root) {
|
||||
return root
|
||||
}
|
||||
|
||||
fmt.Fprintln(os.Stderr, "error: could not autodetect root directory, set the TINYGOROOT environment variable to override")
|
||||
os.Exit(1)
|
||||
panic("unreachable")
|
||||
}
|
||||
|
||||
// isSourceDir returns true if the directory looks like a TinyGo source directory.
|
||||
func isSourceDir(root string) bool {
|
||||
_, err := os.Stat(filepath.Join(root, "src/runtime/internal/sys/zversion.go"))
|
||||
if err != nil {
|
||||
return false
|
||||
}
|
||||
_, err = os.Stat(filepath.Join(root, "src/device/arm/arm.go"))
|
||||
return err == nil
|
||||
}
|
||||
|
||||
func getHomeDir() string {
|
||||
u, err := user.Current()
|
||||
if err != nil {
|
||||
panic("cannot get current user: " + err.Error())
|
||||
}
|
||||
if u.HomeDir == "" {
|
||||
// This is very unlikely, so panic here.
|
||||
// Not the nicest solution, however.
|
||||
panic("could not find home directory")
|
||||
}
|
||||
return u.HomeDir
|
||||
}
|
||||
|
||||
// getGoroot returns an appropriate GOROOT from various sources. If it can't be
|
||||
// found, it returns an empty string.
|
||||
func getGoroot() string {
|
||||
goroot := os.Getenv("GOROOT")
|
||||
if goroot != "" {
|
||||
// An explicitly set GOROOT always has preference.
|
||||
return goroot
|
||||
}
|
||||
|
||||
// Check for the location of the 'go' binary and base GOROOT on that.
|
||||
binpath, err := exec.LookPath("go")
|
||||
if err == nil {
|
||||
binpath, err = filepath.EvalSymlinks(binpath)
|
||||
if err == nil {
|
||||
goroot := filepath.Dir(filepath.Dir(binpath))
|
||||
if isGoroot(goroot) {
|
||||
return goroot
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Check what GOROOT was at compile time.
|
||||
if isGoroot(runtime.GOROOT()) {
|
||||
return runtime.GOROOT()
|
||||
}
|
||||
|
||||
// Check for some standard locations, as a last resort.
|
||||
var candidates []string
|
||||
switch runtime.GOOS {
|
||||
case "linux":
|
||||
candidates = []string{
|
||||
"/usr/local/go", // manually installed
|
||||
"/usr/lib/go", // from the distribution
|
||||
}
|
||||
case "darwin":
|
||||
candidates = []string{
|
||||
"/usr/local/go", // manually installed
|
||||
"/usr/local/opt/go/libexec", // from Homebrew
|
||||
}
|
||||
}
|
||||
|
||||
for _, candidate := range candidates {
|
||||
if isGoroot(candidate) {
|
||||
return candidate
|
||||
}
|
||||
}
|
||||
|
||||
// Can't find GOROOT...
|
||||
return ""
|
||||
}
|
||||
|
||||
// isGoroot checks whether the given path looks like a GOROOT.
|
||||
func isGoroot(goroot string) bool {
|
||||
_, err := os.Stat(filepath.Join(goroot, "src", "runtime", "internal", "sys", "zversion.go"))
|
||||
return err == nil
|
||||
}
|
||||
+3
-80
@@ -3,92 +3,15 @@ package interp
|
||||
// This file provides useful types for errors encountered during IR evaluation.
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"go/scanner"
|
||||
"go/token"
|
||||
"path/filepath"
|
||||
|
||||
"tinygo.org/x/go-llvm"
|
||||
"github.com/aykevl/go-llvm"
|
||||
)
|
||||
|
||||
// errUnreachable is returned when an unreachable instruction is executed. This
|
||||
// error should not be visible outside of the interp package.
|
||||
var errUnreachable = errors.New("interp: unreachable executed")
|
||||
|
||||
// Unsupported is the specific error that is returned when an unsupported
|
||||
// instruction is hit while trying to interpret all initializers.
|
||||
type Unsupported struct {
|
||||
ImportPath string
|
||||
Inst llvm.Value
|
||||
Pos token.Position
|
||||
Inst llvm.Value
|
||||
}
|
||||
|
||||
func (e Unsupported) Error() string {
|
||||
// TODO: how to return the actual instruction string?
|
||||
// It looks like LLVM provides no function for that...
|
||||
return scanner.Error{
|
||||
Pos: e.Pos,
|
||||
Msg: "interp: unsupported instruction",
|
||||
}.Error()
|
||||
}
|
||||
|
||||
// unsupportedInstructionError returns a new "unsupported instruction" error for
|
||||
// the given instruction. It includes source location information, when
|
||||
// available.
|
||||
func (e *evalPackage) unsupportedInstructionError(inst llvm.Value) *Unsupported {
|
||||
return &Unsupported{
|
||||
ImportPath: e.packagePath,
|
||||
Inst: inst,
|
||||
Pos: getPosition(inst),
|
||||
}
|
||||
}
|
||||
|
||||
// Error encapsulates compile-time interpretation errors with an associated
|
||||
// import path. The errors may not have a precise location attached.
|
||||
type Error struct {
|
||||
ImportPath string
|
||||
Errs []scanner.Error
|
||||
}
|
||||
|
||||
// Error returns the string of the first error in the list of errors.
|
||||
func (e Error) Error() string {
|
||||
return e.Errs[0].Error()
|
||||
}
|
||||
|
||||
// errorAt returns an error value for the currently interpreted package at the
|
||||
// location of the instruction. The location information may not be complete as
|
||||
// it depends on debug information in the IR.
|
||||
func (e *evalPackage) errorAt(inst llvm.Value, msg string) Error {
|
||||
return Error{
|
||||
ImportPath: e.packagePath,
|
||||
Errs: []scanner.Error{errorAt(inst, msg)},
|
||||
}
|
||||
}
|
||||
|
||||
// errorAt returns an error value at the location of the instruction.
|
||||
// The location information may not be complete as it depends on debug
|
||||
// information in the IR.
|
||||
func errorAt(inst llvm.Value, msg string) scanner.Error {
|
||||
return scanner.Error{
|
||||
Pos: getPosition(inst),
|
||||
Msg: msg,
|
||||
}
|
||||
}
|
||||
|
||||
// getPosition returns the position information for the given instruction, as
|
||||
// far as it is available.
|
||||
func getPosition(inst llvm.Value) token.Position {
|
||||
if inst.IsAInstruction().IsNil() {
|
||||
return token.Position{}
|
||||
}
|
||||
loc := inst.InstructionDebugLoc()
|
||||
if loc.IsNil() {
|
||||
return token.Position{}
|
||||
}
|
||||
file := loc.LocationScope().ScopeFile()
|
||||
return token.Position{
|
||||
Filename: filepath.Join(file.FileDirectory(), file.FileFilename()),
|
||||
Line: int(loc.LocationLine()),
|
||||
Column: int(loc.LocationColumn()),
|
||||
}
|
||||
return "interp: unsupported instruction"
|
||||
}
|
||||
|
||||
+58
-198
@@ -4,17 +4,21 @@ package interp
|
||||
// functions.
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"strings"
|
||||
|
||||
"tinygo.org/x/go-llvm"
|
||||
"github.com/aykevl/go-llvm"
|
||||
)
|
||||
|
||||
type frame struct {
|
||||
*evalPackage
|
||||
fn llvm.Value
|
||||
locals map[llvm.Value]Value
|
||||
*Eval
|
||||
fn llvm.Value
|
||||
pkgName string
|
||||
locals map[llvm.Value]Value
|
||||
}
|
||||
|
||||
var ErrUnreachable = errors.New("interp: unreachable executed")
|
||||
|
||||
// evalBasicBlock evaluates a single basic block, returning the return value (if
|
||||
// ending with a ret instruction), a list of outgoing basic blocks (if not
|
||||
// ending with a ret instruction), or an error on failure.
|
||||
@@ -75,29 +79,26 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
fr.locals[inst] = &LocalValue{fr.Eval, fr.builder.CreateXor(lhs, rhs, "")}
|
||||
|
||||
default:
|
||||
return nil, nil, fr.unsupportedInstructionError(inst)
|
||||
return nil, nil, &Unsupported{inst}
|
||||
}
|
||||
|
||||
// Memory operators
|
||||
case !inst.IsAAllocaInst().IsNil():
|
||||
allocType := inst.Type().ElementType()
|
||||
alloca := llvm.AddGlobal(fr.Mod, allocType, fr.packagePath+"$alloca")
|
||||
alloca.SetInitializer(llvm.ConstNull(allocType))
|
||||
alloca.SetLinkage(llvm.InternalLinkage)
|
||||
fr.locals[inst] = &LocalValue{
|
||||
Underlying: alloca,
|
||||
fr.locals[inst] = &AllocaValue{
|
||||
Underlying: getZeroValue(inst.Type().ElementType()),
|
||||
Dirty: false,
|
||||
Eval: fr.Eval,
|
||||
}
|
||||
case !inst.IsALoadInst().IsNil():
|
||||
operand := fr.getLocal(inst.Operand(0)).(*LocalValue)
|
||||
operand := fr.getLocal(inst.Operand(0))
|
||||
var value llvm.Value
|
||||
if !operand.IsConstant() || inst.IsVolatile() || (!operand.Underlying.IsAConstantExpr().IsNil() && operand.Underlying.Opcode() == llvm.BitCast) {
|
||||
if !operand.IsConstant() || inst.IsVolatile() {
|
||||
value = fr.builder.CreateLoad(operand.Value(), inst.Name())
|
||||
} else {
|
||||
value = operand.Load()
|
||||
}
|
||||
if value.Type() != inst.Type() {
|
||||
return nil, nil, fr.errorAt(inst, "interp: load: type does not match")
|
||||
panic("interp: load: type does not match")
|
||||
}
|
||||
fr.locals[inst] = fr.getValue(value)
|
||||
case !inst.IsAStoreInst().IsNil():
|
||||
@@ -121,13 +122,15 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
// Not a constant operation.
|
||||
// This should be detected by the scanner, but isn't at the
|
||||
// moment.
|
||||
return nil, nil, fr.errorAt(inst, "todo: non-const gep")
|
||||
panic("todo: non-const gep")
|
||||
}
|
||||
indices[i] = uint32(operand.Value().ZExtValue())
|
||||
}
|
||||
result := value.GetElementPtr(indices)
|
||||
if result.Type() != inst.Type() {
|
||||
return nil, nil, fr.errorAt(inst, "interp: gep: type does not match")
|
||||
println(" expected:", inst.Type().String())
|
||||
println(" actual: ", result.Type().String())
|
||||
panic("interp: gep: type does not match")
|
||||
}
|
||||
fr.locals[inst] = result
|
||||
|
||||
@@ -170,55 +173,17 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
continue // special case: bitcast of alloc
|
||||
}
|
||||
}
|
||||
if _, ok := fr.getLocal(operand).(*MapValue); ok {
|
||||
// Special case for runtime.trackPointer calls.
|
||||
// Note: this might not be entirely sound in some rare cases
|
||||
// where the map is stored in a dirty global.
|
||||
uses := getUses(inst)
|
||||
if len(uses) == 1 {
|
||||
use := uses[0]
|
||||
if !use.IsACallInst().IsNil() && !use.CalledValue().IsAFunction().IsNil() && use.CalledValue().Name() == "runtime.trackPointer" {
|
||||
continue
|
||||
}
|
||||
}
|
||||
// It is not possible in Go to bitcast a map value to a pointer.
|
||||
return nil, nil, fr.errorAt(inst, "unimplemented: bitcast of map")
|
||||
value := fr.getLocal(operand)
|
||||
if bc, ok := value.(*PointerCastValue); ok {
|
||||
value = bc.Underlying // avoid double bitcasts
|
||||
}
|
||||
value := fr.getLocal(operand).(*LocalValue)
|
||||
fr.locals[inst] = &LocalValue{fr.Eval, fr.builder.CreateBitCast(value.Value(), inst.Type(), "")}
|
||||
fr.locals[inst] = &PointerCastValue{Eval: fr.Eval, Underlying: value, CastType: inst.Type()}
|
||||
|
||||
// Other operators
|
||||
case !inst.IsAICmpInst().IsNil():
|
||||
lhs := fr.getLocal(inst.Operand(0)).(*LocalValue).Underlying
|
||||
rhs := fr.getLocal(inst.Operand(1)).(*LocalValue).Underlying
|
||||
predicate := inst.IntPredicate()
|
||||
if predicate == llvm.IntEQ {
|
||||
var lhsZero, rhsZero bool
|
||||
var ok1, ok2 bool
|
||||
if lhs.Type().TypeKind() == llvm.PointerTypeKind {
|
||||
// Unfortunately, the const propagation in the IR builder
|
||||
// doesn't handle pointer compares of inttoptr values. So we
|
||||
// implement it manually here.
|
||||
lhsZero, ok1 = isPointerNil(lhs)
|
||||
rhsZero, ok2 = isPointerNil(rhs)
|
||||
}
|
||||
if lhs.Type().TypeKind() == llvm.IntegerTypeKind {
|
||||
lhsZero, ok1 = isZero(lhs)
|
||||
rhsZero, ok2 = isZero(rhs)
|
||||
}
|
||||
if ok1 && ok2 {
|
||||
if lhsZero && rhsZero {
|
||||
// Both are zero, so this icmp is always evaluated to true.
|
||||
fr.locals[inst] = &LocalValue{fr.Eval, llvm.ConstInt(fr.Mod.Context().Int1Type(), 1, false)}
|
||||
continue
|
||||
}
|
||||
if lhsZero != rhsZero {
|
||||
// Only one of them is zero, so this comparison must return false.
|
||||
fr.locals[inst] = &LocalValue{fr.Eval, llvm.ConstInt(fr.Mod.Context().Int1Type(), 0, false)}
|
||||
continue
|
||||
}
|
||||
}
|
||||
}
|
||||
fr.locals[inst] = &LocalValue{fr.Eval, fr.builder.CreateICmp(predicate, lhs, rhs, "")}
|
||||
case !inst.IsAFCmpInst().IsNil():
|
||||
lhs := fr.getLocal(inst.Operand(0)).(*LocalValue).Underlying
|
||||
@@ -249,15 +214,15 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
if size != typeSize {
|
||||
// allocate an array
|
||||
if size%typeSize != 0 {
|
||||
return nil, nil, fr.unsupportedInstructionError(inst)
|
||||
return nil, nil, &Unsupported{inst}
|
||||
}
|
||||
elementCount = int(size / typeSize)
|
||||
allocType = llvm.ArrayType(allocType, elementCount)
|
||||
}
|
||||
alloc := llvm.AddGlobal(fr.Mod, allocType, fr.packagePath+"$alloc")
|
||||
alloc.SetInitializer(llvm.ConstNull(allocType))
|
||||
alloc := llvm.AddGlobal(fr.Mod, allocType, fr.pkgName+"$alloc")
|
||||
alloc.SetInitializer(getZeroValue(allocType))
|
||||
alloc.SetLinkage(llvm.InternalLinkage)
|
||||
result := &LocalValue{
|
||||
result := &GlobalValue{
|
||||
Underlying: alloc,
|
||||
Eval: fr.Eval,
|
||||
}
|
||||
@@ -272,31 +237,20 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
valueSize := inst.Operand(1).ZExtValue()
|
||||
fr.locals[inst] = &MapValue{
|
||||
Eval: fr.Eval,
|
||||
PkgName: fr.packagePath,
|
||||
PkgName: fr.pkgName,
|
||||
KeySize: int(keySize),
|
||||
ValueSize: int(valueSize),
|
||||
}
|
||||
case callee.Name() == "runtime.hashmapStringSet":
|
||||
// set a string key in the map
|
||||
m, ok := fr.getLocal(inst.Operand(0)).(*MapValue)
|
||||
if !ok {
|
||||
return nil, nil, fr.errorAt(inst, "could not update map with string key")
|
||||
}
|
||||
// "key" is a Go string value, which in the TinyGo calling convention is split up
|
||||
// into separate pointer and length parameters.
|
||||
keyBuf := fr.getLocal(inst.Operand(1)).(*LocalValue)
|
||||
keyLen := fr.getLocal(inst.Operand(2)).(*LocalValue)
|
||||
valPtr := fr.getLocal(inst.Operand(3)).(*LocalValue)
|
||||
m := fr.getLocal(inst.Operand(0)).(*MapValue)
|
||||
keyBuf := fr.getLocal(inst.Operand(1))
|
||||
keyLen := fr.getLocal(inst.Operand(2))
|
||||
valPtr := fr.getLocal(inst.Operand(3))
|
||||
m.PutString(keyBuf, keyLen, valPtr)
|
||||
case callee.Name() == "runtime.hashmapBinarySet":
|
||||
// set a binary (int etc.) key in the map
|
||||
m, ok := fr.getLocal(inst.Operand(0)).(*MapValue)
|
||||
if !ok {
|
||||
return nil, nil, fr.errorAt(inst, "could not update map")
|
||||
}
|
||||
keyBuf := fr.getLocal(inst.Operand(1)).(*LocalValue)
|
||||
valPtr := fr.getLocal(inst.Operand(2)).(*LocalValue)
|
||||
m.PutBinary(keyBuf, valPtr)
|
||||
// TODO: unimplemented
|
||||
case callee.Name() == "runtime.stringConcat":
|
||||
// adding two strings together
|
||||
buf1Ptr := fr.getLocal(inst.Operand(0))
|
||||
@@ -312,7 +266,7 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
}
|
||||
globalType := llvm.ArrayType(fr.Mod.Context().Int8Type(), len(result))
|
||||
globalValue := llvm.ConstArray(fr.Mod.Context().Int8Type(), vals)
|
||||
global := llvm.AddGlobal(fr.Mod, globalType, fr.packagePath+"$stringconcat")
|
||||
global := llvm.AddGlobal(fr.Mod, globalType, fr.pkgName+"$stringconcat")
|
||||
global.SetInitializer(globalValue)
|
||||
global.SetLinkage(llvm.InternalLinkage)
|
||||
global.SetGlobalConstant(true)
|
||||
@@ -320,53 +274,10 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
stringType := fr.Mod.GetTypeByName("runtime._string")
|
||||
retPtr := llvm.ConstGEP(global, getLLVMIndices(fr.Mod.Context().Int32Type(), []uint32{0, 0}))
|
||||
retLen := llvm.ConstInt(stringType.StructElementTypes()[1], uint64(len(result)), false)
|
||||
ret := llvm.ConstNull(stringType)
|
||||
ret := getZeroValue(stringType)
|
||||
ret = llvm.ConstInsertValue(ret, retPtr, []uint32{0})
|
||||
ret = llvm.ConstInsertValue(ret, retLen, []uint32{1})
|
||||
fr.locals[inst] = &LocalValue{fr.Eval, ret}
|
||||
case callee.Name() == "runtime.sliceCopy":
|
||||
elementSize := fr.getLocal(inst.Operand(4)).(*LocalValue).Value().ZExtValue()
|
||||
dstArray := fr.getLocal(inst.Operand(0)).(*LocalValue).stripPointerCasts()
|
||||
srcArray := fr.getLocal(inst.Operand(1)).(*LocalValue).stripPointerCasts()
|
||||
dstLen := fr.getLocal(inst.Operand(2)).(*LocalValue)
|
||||
srcLen := fr.getLocal(inst.Operand(3)).(*LocalValue)
|
||||
if elementSize != 1 && dstArray.Type().ElementType().TypeKind() == llvm.ArrayTypeKind && srcArray.Type().ElementType().TypeKind() == llvm.ArrayTypeKind {
|
||||
// Slice data pointers are created by adding a global array
|
||||
// and getting the address of the first element using a GEP.
|
||||
// However, before the compiler can pass it to
|
||||
// runtime.sliceCopy, it has to perform a bitcast to a *i8,
|
||||
// to make it a unsafe.Pointer. Now, when the IR builder
|
||||
// sees a bitcast of a GEP with zero indices, it will make
|
||||
// a bitcast of the original array instead of the GEP,
|
||||
// which breaks our assumptions.
|
||||
// Re-add this GEP, in the hope that it it is then of the correct type...
|
||||
dstArray = dstArray.GetElementPtr([]uint32{0, 0}).(*LocalValue)
|
||||
srcArray = srcArray.GetElementPtr([]uint32{0, 0}).(*LocalValue)
|
||||
}
|
||||
if fr.Eval.TargetData.TypeAllocSize(dstArray.Type().ElementType()) != elementSize {
|
||||
return nil, nil, fr.errorAt(inst, "interp: slice dst element size does not match pointer type")
|
||||
}
|
||||
if fr.Eval.TargetData.TypeAllocSize(srcArray.Type().ElementType()) != elementSize {
|
||||
return nil, nil, fr.errorAt(inst, "interp: slice src element size does not match pointer type")
|
||||
}
|
||||
if dstArray.Type() != srcArray.Type() {
|
||||
return nil, nil, fr.errorAt(inst, "interp: slice element types don't match")
|
||||
}
|
||||
length := dstLen.Value().SExtValue()
|
||||
if srcLength := srcLen.Value().SExtValue(); srcLength < length {
|
||||
length = srcLength
|
||||
}
|
||||
if length < 0 {
|
||||
return nil, nil, fr.errorAt(inst, "interp: trying to copy a slice with negative length?")
|
||||
}
|
||||
for i := int64(0); i < length; i++ {
|
||||
// *dst = *src
|
||||
dstArray.Store(srcArray.Load())
|
||||
// dst++
|
||||
dstArray = dstArray.GetElementPtr([]uint32{1}).(*LocalValue)
|
||||
// src++
|
||||
srcArray = srcArray.GetElementPtr([]uint32{1}).(*LocalValue)
|
||||
}
|
||||
case callee.Name() == "runtime.stringToBytes":
|
||||
// convert a string to a []byte
|
||||
bufPtr := fr.getLocal(inst.Operand(0))
|
||||
@@ -378,7 +289,7 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
}
|
||||
globalType := llvm.ArrayType(fr.Mod.Context().Int8Type(), len(result))
|
||||
globalValue := llvm.ConstArray(fr.Mod.Context().Int8Type(), vals)
|
||||
global := llvm.AddGlobal(fr.Mod, globalType, fr.packagePath+"$bytes")
|
||||
global := llvm.AddGlobal(fr.Mod, globalType, fr.pkgName+"$bytes")
|
||||
global.SetInitializer(globalValue)
|
||||
global.SetLinkage(llvm.InternalLinkage)
|
||||
global.SetGlobalConstant(true)
|
||||
@@ -386,55 +297,13 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
sliceType := inst.Type()
|
||||
retPtr := llvm.ConstGEP(global, getLLVMIndices(fr.Mod.Context().Int32Type(), []uint32{0, 0}))
|
||||
retLen := llvm.ConstInt(sliceType.StructElementTypes()[1], uint64(len(result)), false)
|
||||
ret := llvm.ConstNull(sliceType)
|
||||
ret := getZeroValue(sliceType)
|
||||
ret = llvm.ConstInsertValue(ret, retPtr, []uint32{0}) // ptr
|
||||
ret = llvm.ConstInsertValue(ret, retLen, []uint32{1}) // len
|
||||
ret = llvm.ConstInsertValue(ret, retLen, []uint32{2}) // cap
|
||||
fr.locals[inst] = &LocalValue{fr.Eval, ret}
|
||||
case callee.Name() == "runtime.interfaceImplements":
|
||||
typecode := fr.getLocal(inst.Operand(0)).(*LocalValue).Underlying
|
||||
interfaceMethodSet := fr.getLocal(inst.Operand(1)).(*LocalValue).Underlying
|
||||
if typecode.IsAConstantExpr().IsNil() || typecode.Opcode() != llvm.PtrToInt {
|
||||
return nil, nil, fr.errorAt(inst, "interp: expected typecode to be a ptrtoint")
|
||||
}
|
||||
typecode = typecode.Operand(0)
|
||||
if interfaceMethodSet.IsAConstantExpr().IsNil() || interfaceMethodSet.Opcode() != llvm.GetElementPtr {
|
||||
return nil, nil, fr.errorAt(inst, "interp: expected method set in runtime.interfaceImplements to be a constant gep")
|
||||
}
|
||||
interfaceMethodSet = interfaceMethodSet.Operand(0).Initializer()
|
||||
methodSet := llvm.ConstExtractValue(typecode.Initializer(), []uint32{1})
|
||||
if methodSet.IsAConstantExpr().IsNil() || methodSet.Opcode() != llvm.GetElementPtr {
|
||||
return nil, nil, fr.errorAt(inst, "interp: expected method set to be a constant gep")
|
||||
}
|
||||
methodSet = methodSet.Operand(0).Initializer()
|
||||
|
||||
// Make a set of all the methods on the concrete type, for
|
||||
// easier checking in the next step.
|
||||
definedMethods := map[string]struct{}{}
|
||||
for i := 0; i < methodSet.Type().ArrayLength(); i++ {
|
||||
methodInfo := llvm.ConstExtractValue(methodSet, []uint32{uint32(i)})
|
||||
name := llvm.ConstExtractValue(methodInfo, []uint32{0}).Name()
|
||||
definedMethods[name] = struct{}{}
|
||||
}
|
||||
// Check whether all interface methods are also in the list
|
||||
// of defined methods calculated above.
|
||||
implements := uint64(1) // i1 true
|
||||
for i := 0; i < interfaceMethodSet.Type().ArrayLength(); i++ {
|
||||
name := llvm.ConstExtractValue(interfaceMethodSet, []uint32{uint32(i)}).Name()
|
||||
if _, ok := definedMethods[name]; !ok {
|
||||
// There is a method on the interface that is not
|
||||
// implemented by the type.
|
||||
implements = 0 // i1 false
|
||||
break
|
||||
}
|
||||
}
|
||||
fr.locals[inst] = &LocalValue{fr.Eval, llvm.ConstInt(fr.Mod.Context().Int1Type(), implements, false)}
|
||||
case callee.Name() == "runtime.nanotime":
|
||||
fr.locals[inst] = &LocalValue{fr.Eval, llvm.ConstInt(fr.Mod.Context().Int64Type(), 0, false)}
|
||||
case callee.Name() == "llvm.dbg.value":
|
||||
// do nothing
|
||||
case callee.Name() == "runtime.trackPointer":
|
||||
// do nothing
|
||||
case callee.Name() == "runtime.makeInterface":
|
||||
fr.locals[inst] = &LocalValue{fr.Eval, llvm.ConstPtrToInt(inst.Operand(0), fr.TargetData.IntPtrType())}
|
||||
case strings.HasPrefix(callee.Name(), "runtime.print") || callee.Name() == "runtime._panic":
|
||||
// This are all print instructions, which necessarily have side
|
||||
// effects but no results.
|
||||
@@ -474,10 +343,7 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
params = append(params, local)
|
||||
}
|
||||
var ret Value
|
||||
scanResult, err := fr.hasSideEffects(callee)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
scanResult := fr.Eval.hasSideEffects(callee)
|
||||
if scanResult.severity == sideEffectLimited || dirtyParams && scanResult.severity != sideEffectAll {
|
||||
// Side effect is bounded. This means the operation invokes
|
||||
// side effects (like calling an external function) but it
|
||||
@@ -500,7 +366,7 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
// compile time.
|
||||
// * Unbounded: cannot call at runtime so we'll try to
|
||||
// interpret anyway and hope for the best.
|
||||
ret, err = fr.function(callee, params, indent+" ")
|
||||
ret, err = fr.function(callee, params, fr.pkgName, indent+" ")
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
@@ -510,7 +376,7 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
}
|
||||
default:
|
||||
// function pointers, etc.
|
||||
return nil, nil, fr.unsupportedInstructionError(inst)
|
||||
return nil, nil, &Unsupported{inst}
|
||||
}
|
||||
case !inst.IsAExtractValueInst().IsNil():
|
||||
agg := fr.getLocal(inst.Operand(0)).(*LocalValue) // must be constant
|
||||
@@ -520,7 +386,7 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
fr.locals[inst] = fr.getValue(newValue)
|
||||
} else {
|
||||
if len(indices) != 1 {
|
||||
return nil, nil, fr.errorAt(inst, "interp: cannot handle extractvalue with not exactly 1 index")
|
||||
return nil, nil, errors.New("cannot handle extractvalue with not exactly 1 index")
|
||||
}
|
||||
fr.locals[inst] = &LocalValue{fr.Eval, fr.builder.CreateExtractValue(agg.Underlying, int(indices[0]), inst.Name())}
|
||||
}
|
||||
@@ -533,7 +399,7 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
fr.locals[inst] = &LocalValue{fr.Eval, newValue}
|
||||
} else {
|
||||
if len(indices) != 1 {
|
||||
return nil, nil, fr.errorAt(inst, "interp: cannot handle insertvalue with not exactly 1 index")
|
||||
return nil, nil, errors.New("cannot handle insertvalue with not exactly 1 index")
|
||||
}
|
||||
fr.locals[inst] = &LocalValue{fr.Eval, fr.builder.CreateInsertValue(agg.Underlying, val.Value(), int(indices[0]), inst.Name())}
|
||||
}
|
||||
@@ -546,25 +412,21 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
// conditional branch (if/then/else)
|
||||
cond := fr.getLocal(inst.Operand(0)).Value()
|
||||
if cond.Type() != fr.Mod.Context().Int1Type() {
|
||||
return nil, nil, fr.errorAt(inst, "expected an i1 in a branch instruction")
|
||||
panic("expected an i1 in a branch instruction")
|
||||
}
|
||||
thenBB := inst.Operand(1)
|
||||
elseBB := inst.Operand(2)
|
||||
if !cond.IsAInstruction().IsNil() {
|
||||
return nil, nil, fr.errorAt(inst, "interp: branch on a non-constant")
|
||||
}
|
||||
if !cond.IsAConstantExpr().IsNil() {
|
||||
// This may happen when the instruction builder could not
|
||||
// const-fold some instructions.
|
||||
return nil, nil, fr.errorAt(inst, "interp: branch on a non-const-propagated constant expression")
|
||||
}
|
||||
switch cond {
|
||||
case llvm.ConstInt(fr.Mod.Context().Int1Type(), 0, false): // false
|
||||
return nil, []llvm.Value{thenBB}, nil // then
|
||||
case llvm.ConstInt(fr.Mod.Context().Int1Type(), 1, false): // true
|
||||
return nil, []llvm.Value{elseBB}, nil // else
|
||||
default:
|
||||
return nil, nil, fr.errorAt(inst, "branch was not true or false")
|
||||
if !cond.IsConstant() {
|
||||
return nil, nil, errors.New("interp: branch on a non-constant")
|
||||
} else {
|
||||
switch cond.ZExtValue() {
|
||||
case 0: // false
|
||||
return nil, []llvm.Value{thenBB}, nil // then
|
||||
case 1: // true
|
||||
return nil, []llvm.Value{elseBB}, nil // else
|
||||
default:
|
||||
panic("branch was not true or false")
|
||||
}
|
||||
}
|
||||
case !inst.IsABranchInst().IsNil() && inst.OperandsCount() == 1:
|
||||
// unconditional branch (goto)
|
||||
@@ -572,11 +434,10 @@ func (fr *frame) evalBasicBlock(bb, incoming llvm.BasicBlock, indent string) (re
|
||||
case !inst.IsAUnreachableInst().IsNil():
|
||||
// Unreachable was reached (e.g. after a call to panic()).
|
||||
// Report this as an error, as it is not supposed to happen.
|
||||
// This is a sentinel error value.
|
||||
return nil, nil, errUnreachable
|
||||
return nil, nil, ErrUnreachable
|
||||
|
||||
default:
|
||||
return nil, nil, fr.unsupportedInstructionError(inst)
|
||||
return nil, nil, &Unsupported{inst}
|
||||
}
|
||||
}
|
||||
|
||||
@@ -590,7 +451,6 @@ func (fr *frame) getLocal(v llvm.Value) Value {
|
||||
} else if value := fr.getValue(v); value != nil {
|
||||
return value
|
||||
} else {
|
||||
// This should not happen under normal circumstances.
|
||||
panic("cannot find value")
|
||||
}
|
||||
}
|
||||
|
||||
+27
-39
@@ -7,9 +7,10 @@ package interp
|
||||
// methods.
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"strings"
|
||||
|
||||
"tinygo.org/x/go-llvm"
|
||||
"github.com/aykevl/go-llvm"
|
||||
)
|
||||
|
||||
type Eval struct {
|
||||
@@ -17,21 +18,14 @@ type Eval struct {
|
||||
TargetData llvm.TargetData
|
||||
Debug bool
|
||||
builder llvm.Builder
|
||||
dibuilder *llvm.DIBuilder
|
||||
dirtyGlobals map[llvm.Value]struct{}
|
||||
sideEffectFuncs map[llvm.Value]*sideEffectResult // cache of side effect scan results
|
||||
}
|
||||
|
||||
// evalPackage encapsulates the Eval type for just a single package. The Eval
|
||||
// type keeps state across the whole program, the evalPackage type keeps extra
|
||||
// state for the currently interpreted package.
|
||||
type evalPackage struct {
|
||||
*Eval
|
||||
packagePath string
|
||||
}
|
||||
|
||||
// Run evaluates the function with the given name and then eliminates all
|
||||
// callers.
|
||||
func Run(mod llvm.Module, debug bool) error {
|
||||
func Run(mod llvm.Module, targetData llvm.TargetData, debug bool) error {
|
||||
if debug {
|
||||
println("\ncompile-time evaluation:")
|
||||
}
|
||||
@@ -39,31 +33,24 @@ func Run(mod llvm.Module, debug bool) error {
|
||||
name := "runtime.initAll"
|
||||
e := &Eval{
|
||||
Mod: mod,
|
||||
TargetData: llvm.NewTargetData(mod.DataLayout()),
|
||||
TargetData: targetData,
|
||||
Debug: debug,
|
||||
dirtyGlobals: map[llvm.Value]struct{}{},
|
||||
}
|
||||
e.builder = mod.Context().NewBuilder()
|
||||
e.dibuilder = llvm.NewDIBuilder(mod)
|
||||
|
||||
initAll := mod.NamedFunction(name)
|
||||
bb := initAll.EntryBasicBlock()
|
||||
// Create a dummy alloca in the entry block that we can set the insert point
|
||||
// to. This is necessary because otherwise we might be removing the
|
||||
// instruction (init call) that we are removing after successful
|
||||
// interpretation.
|
||||
e.builder.SetInsertPointBefore(bb.FirstInstruction())
|
||||
dummy := e.builder.CreateAlloca(e.Mod.Context().Int8Type(), "dummy")
|
||||
e.builder.SetInsertPointBefore(dummy)
|
||||
e.builder.SetInsertPointBefore(bb.LastInstruction())
|
||||
e.builder.SetInstDebugLocation(bb.FirstInstruction())
|
||||
var initCalls []llvm.Value
|
||||
for inst := bb.FirstInstruction(); !inst.IsNil(); inst = llvm.NextInstruction(inst) {
|
||||
if inst == dummy {
|
||||
continue
|
||||
}
|
||||
if !inst.IsAReturnInst().IsNil() {
|
||||
break // ret void
|
||||
}
|
||||
if inst.IsACallInst().IsNil() || inst.CalledValue().IsAFunction().IsNil() {
|
||||
return errorAt(inst, "interp: expected all instructions in "+name+" to be direct calls")
|
||||
return errors.New("expected all instructions in " + name + " to be direct calls")
|
||||
}
|
||||
initCalls = append(initCalls, inst)
|
||||
}
|
||||
@@ -73,35 +60,32 @@ func Run(mod llvm.Module, debug bool) error {
|
||||
for _, call := range initCalls {
|
||||
initName := call.CalledValue().Name()
|
||||
if !strings.HasSuffix(initName, ".init") {
|
||||
return errorAt(call, "interp: expected all instructions in "+name+" to be *.init() calls")
|
||||
return errors.New("expected all instructions in " + name + " to be *.init() calls")
|
||||
}
|
||||
pkgName := initName[:len(initName)-5]
|
||||
fn := call.CalledValue()
|
||||
call.EraseFromParentAsInstruction()
|
||||
evalPkg := evalPackage{
|
||||
Eval: e,
|
||||
packagePath: pkgName,
|
||||
}
|
||||
_, err := evalPkg.function(fn, []Value{&LocalValue{e, undefPtr}, &LocalValue{e, undefPtr}}, "")
|
||||
if err == errUnreachable {
|
||||
_, err := e.Function(call.CalledValue(), []Value{&LocalValue{e, undefPtr}}, pkgName)
|
||||
if err == ErrUnreachable {
|
||||
break
|
||||
}
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
call.EraseFromParentAsInstruction()
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// function interprets the given function. The params are the function params
|
||||
// and the indent is the string indentation to use when dumping all interpreted
|
||||
// instructions.
|
||||
func (e *evalPackage) function(fn llvm.Value, params []Value, indent string) (Value, error) {
|
||||
func (e *Eval) Function(fn llvm.Value, params []Value, pkgName string) (Value, error) {
|
||||
return e.function(fn, params, pkgName, "")
|
||||
}
|
||||
|
||||
func (e *Eval) function(fn llvm.Value, params []Value, pkgName, indent string) (Value, error) {
|
||||
fr := frame{
|
||||
evalPackage: e,
|
||||
fn: fn,
|
||||
locals: make(map[llvm.Value]Value),
|
||||
Eval: e,
|
||||
fn: fn,
|
||||
pkgName: pkgName,
|
||||
locals: make(map[llvm.Value]Value),
|
||||
}
|
||||
for i, param := range fn.Params() {
|
||||
fr.locals[param] = params[i]
|
||||
@@ -130,7 +114,11 @@ func (e *evalPackage) function(fn llvm.Value, params []Value, indent string) (Va
|
||||
// getValue determines what kind of LLVM value it gets and returns the
|
||||
// appropriate Value type.
|
||||
func (e *Eval) getValue(v llvm.Value) Value {
|
||||
return &LocalValue{e, v}
|
||||
if !v.IsAGlobalVariable().IsNil() {
|
||||
return &GlobalValue{e, v}
|
||||
} else {
|
||||
return &LocalValue{e, v}
|
||||
}
|
||||
}
|
||||
|
||||
// markDirty marks the passed-in LLVM value dirty, recursively. For example,
|
||||
|
||||
@@ -1,101 +0,0 @@
|
||||
package interp
|
||||
|
||||
import (
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"strings"
|
||||
"testing"
|
||||
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
func TestInterp(t *testing.T) {
|
||||
for _, name := range []string{
|
||||
"basic",
|
||||
"slice-copy",
|
||||
"consteval",
|
||||
} {
|
||||
name := name // make tc local to this closure
|
||||
t.Run(name, func(t *testing.T) {
|
||||
t.Parallel()
|
||||
runTest(t, "testdata/"+name)
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
func runTest(t *testing.T, pathPrefix string) {
|
||||
// Read the input IR.
|
||||
ctx := llvm.NewContext()
|
||||
buf, err := llvm.NewMemoryBufferFromFile(pathPrefix + ".ll")
|
||||
os.Stat(pathPrefix + ".ll") // make sure this file is tracked by `go test` caching
|
||||
if err != nil {
|
||||
t.Fatalf("could not read file %s: %v", pathPrefix+".ll", err)
|
||||
}
|
||||
mod, err := ctx.ParseIR(buf)
|
||||
if err != nil {
|
||||
t.Fatalf("could not load module:\n%v", err)
|
||||
}
|
||||
|
||||
// Perform the transform.
|
||||
err = Run(mod, false)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
// Run some cleanup passes to get easy-to-read outputs.
|
||||
pm := llvm.NewPassManager()
|
||||
defer pm.Dispose()
|
||||
pm.AddGlobalOptimizerPass()
|
||||
pm.AddDeadStoreEliminationPass()
|
||||
pm.Run(mod)
|
||||
|
||||
// Read the expected output IR.
|
||||
out, err := ioutil.ReadFile(pathPrefix + ".out.ll")
|
||||
if err != nil {
|
||||
t.Fatalf("could not read output file %s: %v", pathPrefix+".out.ll", err)
|
||||
}
|
||||
|
||||
// See whether the transform output matches with the expected output IR.
|
||||
expected := string(out)
|
||||
actual := mod.String()
|
||||
if !fuzzyEqualIR(expected, actual) {
|
||||
t.Logf("output does not match expected output:\n%s", actual)
|
||||
t.Fail()
|
||||
}
|
||||
}
|
||||
|
||||
// fuzzyEqualIR returns true if the two LLVM IR strings passed in are roughly
|
||||
// equal. That means, only relevant lines are compared (excluding comments
|
||||
// etc.).
|
||||
func fuzzyEqualIR(s1, s2 string) bool {
|
||||
lines1 := filterIrrelevantIRLines(strings.Split(s1, "\n"))
|
||||
lines2 := filterIrrelevantIRLines(strings.Split(s2, "\n"))
|
||||
if len(lines1) != len(lines2) {
|
||||
return false
|
||||
}
|
||||
for i, line := range lines1 {
|
||||
if line != lines2[i] {
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
// filterIrrelevantIRLines removes lines from the input slice of strings that
|
||||
// are not relevant in comparing IR. For example, empty lines and comments are
|
||||
// stripped out.
|
||||
func filterIrrelevantIRLines(lines []string) []string {
|
||||
var out []string
|
||||
for _, line := range lines {
|
||||
line = strings.TrimSpace(line) // drop '\r' on Windows
|
||||
if line == "" || line[0] == ';' {
|
||||
continue
|
||||
}
|
||||
if strings.HasPrefix(line, "source_filename = ") {
|
||||
continue
|
||||
}
|
||||
out = append(out, line)
|
||||
}
|
||||
return out
|
||||
}
|
||||
+20
-75
@@ -1,26 +1,11 @@
|
||||
package interp
|
||||
|
||||
import (
|
||||
"tinygo.org/x/go-llvm"
|
||||
"github.com/aykevl/go-llvm"
|
||||
)
|
||||
|
||||
type sideEffectSeverity int
|
||||
|
||||
func (severity sideEffectSeverity) String() string {
|
||||
switch severity {
|
||||
case sideEffectInProgress:
|
||||
return "in progress"
|
||||
case sideEffectNone:
|
||||
return "none"
|
||||
case sideEffectLimited:
|
||||
return "limited"
|
||||
case sideEffectAll:
|
||||
return "all"
|
||||
default:
|
||||
return "unknown"
|
||||
}
|
||||
}
|
||||
|
||||
const (
|
||||
sideEffectInProgress sideEffectSeverity = iota // computing side effects is in progress (for recursive functions)
|
||||
sideEffectNone // no side effects at all (pure)
|
||||
@@ -38,33 +23,12 @@ type sideEffectResult struct {
|
||||
// hasSideEffects scans this function and all descendants, recursively. It
|
||||
// returns whether this function has side effects and if it does, which globals
|
||||
// it mentions anywhere in this function or any called functions.
|
||||
func (e *evalPackage) hasSideEffects(fn llvm.Value) (*sideEffectResult, error) {
|
||||
switch fn.Name() {
|
||||
case "runtime.alloc":
|
||||
// Cannot be scanned but can be interpreted.
|
||||
return &sideEffectResult{severity: sideEffectNone}, nil
|
||||
case "runtime.nanotime":
|
||||
// Fixed value at compile time.
|
||||
return &sideEffectResult{severity: sideEffectNone}, nil
|
||||
case "runtime._panic":
|
||||
return &sideEffectResult{severity: sideEffectLimited}, nil
|
||||
case "runtime.interfaceImplements":
|
||||
return &sideEffectResult{severity: sideEffectNone}, nil
|
||||
case "runtime.sliceCopy":
|
||||
return &sideEffectResult{severity: sideEffectNone}, nil
|
||||
case "runtime.trackPointer":
|
||||
return &sideEffectResult{severity: sideEffectNone}, nil
|
||||
case "llvm.dbg.value":
|
||||
return &sideEffectResult{severity: sideEffectNone}, nil
|
||||
}
|
||||
if fn.IsDeclaration() {
|
||||
return &sideEffectResult{severity: sideEffectLimited}, nil
|
||||
}
|
||||
func (e *Eval) hasSideEffects(fn llvm.Value) *sideEffectResult {
|
||||
if e.sideEffectFuncs == nil {
|
||||
e.sideEffectFuncs = make(map[llvm.Value]*sideEffectResult)
|
||||
}
|
||||
if se, ok := e.sideEffectFuncs[fn]; ok {
|
||||
return se, nil
|
||||
return se
|
||||
}
|
||||
result := &sideEffectResult{
|
||||
severity: sideEffectInProgress,
|
||||
@@ -75,7 +39,6 @@ func (e *evalPackage) hasSideEffects(fn llvm.Value) (*sideEffectResult, error) {
|
||||
for bb := fn.EntryBasicBlock(); !bb.IsNil(); bb = llvm.NextBasicBlock(bb) {
|
||||
for inst := bb.FirstInstruction(); !inst.IsNil(); inst = llvm.NextInstruction(inst) {
|
||||
if inst.IsAInstruction().IsNil() {
|
||||
// Should not happen in valid IR.
|
||||
panic("not an instruction")
|
||||
}
|
||||
|
||||
@@ -92,7 +55,7 @@ func (e *evalPackage) hasSideEffects(fn llvm.Value) (*sideEffectResult, error) {
|
||||
switch inst.InstructionOpcode() {
|
||||
case llvm.IndirectBr, llvm.Invoke:
|
||||
// Not emitted by the compiler.
|
||||
return nil, e.errorAt(inst, "unknown instructions")
|
||||
panic("unknown instructions")
|
||||
case llvm.Call:
|
||||
child := inst.CalledValue()
|
||||
if !child.IsAInlineAsm().IsNil() {
|
||||
@@ -110,41 +73,27 @@ func (e *evalPackage) hasSideEffects(fn llvm.Value) (*sideEffectResult, error) {
|
||||
result.updateSeverity(sideEffectAll)
|
||||
continue
|
||||
}
|
||||
name := child.Name()
|
||||
if child.IsDeclaration() {
|
||||
if name == "runtime.makeInterface" {
|
||||
// Can be interpreted so does not have side effects.
|
||||
continue
|
||||
}
|
||||
// External function call. Assume only limited side effects
|
||||
// (no affected globals, etc.).
|
||||
if e.hasLocalSideEffects(dirtyLocals, inst) {
|
||||
if result.hasLocalSideEffects(dirtyLocals, inst) {
|
||||
result.updateSeverity(sideEffectLimited)
|
||||
}
|
||||
continue
|
||||
}
|
||||
childSideEffects, err := e.hasSideEffects(child)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
childSideEffects := e.hasSideEffects(fn)
|
||||
switch childSideEffects.severity {
|
||||
case sideEffectInProgress, sideEffectNone:
|
||||
// no side effects or recursive function - continue scanning
|
||||
case sideEffectLimited:
|
||||
// The return value may be problematic.
|
||||
if e.hasLocalSideEffects(dirtyLocals, inst) {
|
||||
result.updateSeverity(sideEffectLimited)
|
||||
}
|
||||
case sideEffectAll:
|
||||
result.updateSeverity(sideEffectAll)
|
||||
default:
|
||||
panic("unreachable")
|
||||
result.update(childSideEffects)
|
||||
}
|
||||
case llvm.Load:
|
||||
if inst.IsVolatile() {
|
||||
result.updateSeverity(sideEffectLimited)
|
||||
}
|
||||
if _, ok := e.dirtyGlobals[inst.Operand(0)]; ok {
|
||||
if e.hasLocalSideEffects(dirtyLocals, inst) {
|
||||
result.updateSeverity(sideEffectLimited)
|
||||
}
|
||||
}
|
||||
case llvm.Store:
|
||||
case llvm.Load, llvm.Store:
|
||||
if inst.IsVolatile() {
|
||||
result.updateSeverity(sideEffectLimited)
|
||||
}
|
||||
@@ -163,13 +112,13 @@ func (e *evalPackage) hasSideEffects(fn llvm.Value) (*sideEffectResult, error) {
|
||||
// No side effect was reported for this function.
|
||||
result.severity = sideEffectNone
|
||||
}
|
||||
return result, nil
|
||||
return result
|
||||
}
|
||||
|
||||
// hasLocalSideEffects checks whether the given instruction flows into a branch
|
||||
// or return instruction, in which case the whole function must be marked as
|
||||
// having side effects and be called at runtime.
|
||||
func (e *Eval) hasLocalSideEffects(dirtyLocals map[llvm.Value]struct{}, inst llvm.Value) bool {
|
||||
func (r *sideEffectResult) hasLocalSideEffects(dirtyLocals map[llvm.Value]struct{}, inst llvm.Value) bool {
|
||||
if _, ok := dirtyLocals[inst]; ok {
|
||||
// It is already known that this local is dirty.
|
||||
return true
|
||||
@@ -178,7 +127,6 @@ func (e *Eval) hasLocalSideEffects(dirtyLocals map[llvm.Value]struct{}, inst llv
|
||||
for use := inst.FirstUse(); !use.IsNil(); use = use.NextUse() {
|
||||
user := use.User()
|
||||
if user.IsAInstruction().IsNil() {
|
||||
// Should not happen in valid IR.
|
||||
panic("user not an instruction")
|
||||
}
|
||||
switch user.InstructionOpcode() {
|
||||
@@ -198,20 +146,17 @@ func (e *Eval) hasLocalSideEffects(dirtyLocals map[llvm.Value]struct{}, inst llv
|
||||
// Already handled in (*Eval).hasSideEffects.
|
||||
continue
|
||||
}
|
||||
// This store might affect all kinds of values. While it is
|
||||
// certainly possible to traverse through all of them, the easiest
|
||||
// option right now is to just assume the worst and say that this
|
||||
// function has side effects.
|
||||
// TODO: traverse through all stores and mark all relevant allocas /
|
||||
// globals dirty.
|
||||
return true
|
||||
// But a store might also store to an alloca, in which case all uses
|
||||
// of the alloca (possibly indirect through a GEP, bitcast, etc.)
|
||||
// must be marked dirty.
|
||||
panic("todo: store")
|
||||
default:
|
||||
// All instructions that take 0 or more operands (1 or more if it
|
||||
// was a use) and produce a result.
|
||||
// For a list:
|
||||
// https://godoc.org/github.com/llvm-mirror/llvm/bindings/go/llvm#Opcode
|
||||
dirtyLocals[user] = struct{}{}
|
||||
if e.hasLocalSideEffects(dirtyLocals, user) {
|
||||
if r.hasLocalSideEffects(dirtyLocals, user) {
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
@@ -1,93 +0,0 @@
|
||||
package interp
|
||||
|
||||
import (
|
||||
"os"
|
||||
"sort"
|
||||
"testing"
|
||||
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
var scanTestTable = []struct {
|
||||
name string
|
||||
severity sideEffectSeverity
|
||||
mentionsGlobals []string
|
||||
}{
|
||||
{"returnsConst", sideEffectNone, nil},
|
||||
{"returnsArg", sideEffectNone, nil},
|
||||
{"externalCallOnly", sideEffectNone, nil},
|
||||
{"externalCallAndReturn", sideEffectLimited, nil},
|
||||
{"externalCallBranch", sideEffectLimited, nil},
|
||||
{"readCleanGlobal", sideEffectNone, []string{"cleanGlobalInt"}},
|
||||
{"readDirtyGlobal", sideEffectLimited, []string{"dirtyGlobalInt"}},
|
||||
{"callFunctionPointer", sideEffectAll, []string{"functionPointer"}},
|
||||
{"getDirtyPointer", sideEffectLimited, nil},
|
||||
{"storeToPointer", sideEffectLimited, nil},
|
||||
}
|
||||
|
||||
func TestScan(t *testing.T) {
|
||||
t.Parallel()
|
||||
|
||||
// Read the input IR.
|
||||
path := "testdata/scan.ll"
|
||||
ctx := llvm.NewContext()
|
||||
buf, err := llvm.NewMemoryBufferFromFile(path)
|
||||
os.Stat(path) // make sure this file is tracked by `go test` caching
|
||||
if err != nil {
|
||||
t.Fatalf("could not read file %s: %v", path, err)
|
||||
}
|
||||
mod, err := ctx.ParseIR(buf)
|
||||
if err != nil {
|
||||
t.Fatalf("could not load module:\n%v", err)
|
||||
}
|
||||
|
||||
// Check all to-be-tested functions.
|
||||
for _, tc := range scanTestTable {
|
||||
// Create an eval object, for testing.
|
||||
e := &Eval{
|
||||
Mod: mod,
|
||||
TargetData: llvm.NewTargetData(mod.DataLayout()),
|
||||
dirtyGlobals: map[llvm.Value]struct{}{},
|
||||
}
|
||||
|
||||
// Mark some globals dirty, for testing.
|
||||
e.markDirty(mod.NamedGlobal("dirtyGlobalInt"))
|
||||
|
||||
// Scan for side effects.
|
||||
fn := mod.NamedFunction(tc.name)
|
||||
if fn.IsNil() {
|
||||
t.Errorf("scan test: could not find tested function %s in the IR", tc.name)
|
||||
continue
|
||||
}
|
||||
evalPkg := &evalPackage{e, "testdata"}
|
||||
result, err := evalPkg.hasSideEffects(fn)
|
||||
if err != nil {
|
||||
t.Errorf("scan test: failed to scan %s for side effects: %v", fn.Name(), err)
|
||||
}
|
||||
|
||||
// Check whether the result is what we expect.
|
||||
if result.severity != tc.severity {
|
||||
t.Errorf("scan test: function %s should have severity %s but it has %s", tc.name, tc.severity, result.severity)
|
||||
}
|
||||
|
||||
// Check whether the mentioned globals match with what we'd expect.
|
||||
mentionsGlobalNames := make([]string, 0, len(result.mentionsGlobals))
|
||||
for global := range result.mentionsGlobals {
|
||||
mentionsGlobalNames = append(mentionsGlobalNames, global.Name())
|
||||
}
|
||||
sort.Strings(mentionsGlobalNames)
|
||||
globalsMismatch := false
|
||||
if len(result.mentionsGlobals) != len(tc.mentionsGlobals) {
|
||||
globalsMismatch = true
|
||||
} else {
|
||||
for i, globalName := range mentionsGlobalNames {
|
||||
if tc.mentionsGlobals[i] != globalName {
|
||||
globalsMismatch = true
|
||||
}
|
||||
}
|
||||
}
|
||||
if globalsMismatch {
|
||||
t.Errorf("scan test: expected %s to mention globals %v, but it mentions globals %v", tc.name, tc.mentionsGlobals, mentionsGlobalNames)
|
||||
}
|
||||
}
|
||||
}
|
||||
Vendored
-60
@@ -1,60 +0,0 @@
|
||||
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
||||
target triple = "x86_64--linux"
|
||||
|
||||
@main.v1 = internal global i64 0
|
||||
@main.nonConst1 = global [4 x i64] zeroinitializer
|
||||
@main.nonConst2 = global i64 0
|
||||
|
||||
declare void @runtime.printint64(i64) unnamed_addr
|
||||
|
||||
declare void @runtime.printnl() unnamed_addr
|
||||
|
||||
define void @runtime.initAll() unnamed_addr {
|
||||
entry:
|
||||
call void @runtime.init()
|
||||
call void @main.init()
|
||||
ret void
|
||||
}
|
||||
|
||||
define void @main() unnamed_addr {
|
||||
entry:
|
||||
%0 = load i64, i64* @main.v1
|
||||
call void @runtime.printint64(i64 %0)
|
||||
call void @runtime.printnl()
|
||||
ret void
|
||||
}
|
||||
|
||||
define internal void @runtime.init() unnamed_addr {
|
||||
entry:
|
||||
ret void
|
||||
}
|
||||
|
||||
define internal void @main.init() unnamed_addr {
|
||||
entry:
|
||||
store i64 3, i64* @main.v1
|
||||
call void @"main.init#1"()
|
||||
|
||||
; test the following pattern:
|
||||
; func someValue() int // extern function
|
||||
; var nonConst1 = [4]int{someValue(), 0, 0, 0}
|
||||
%value1 = call i64 @someValue()
|
||||
%gep1 = getelementptr [4 x i64], [4 x i64]* @main.nonConst1, i32 0, i32 0
|
||||
store i64 %value1, i64* %gep1
|
||||
|
||||
; Test that the global really is marked dirty:
|
||||
; var nonConst2 = nonConst1[0]
|
||||
%gep2 = getelementptr [4 x i64], [4 x i64]* @main.nonConst1, i32 0, i32 0
|
||||
%value2 = load i64, i64* %gep2
|
||||
store i64 %value2, i64* @main.nonConst2
|
||||
|
||||
ret void
|
||||
}
|
||||
|
||||
define internal void @"main.init#1"() unnamed_addr {
|
||||
entry:
|
||||
call void @runtime.printint64(i64 5)
|
||||
call void @runtime.printnl()
|
||||
ret void
|
||||
}
|
||||
|
||||
declare i64 @someValue()
|
||||
Vendored
-29
@@ -1,29 +0,0 @@
|
||||
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
||||
target triple = "x86_64--linux"
|
||||
|
||||
@main.nonConst1 = local_unnamed_addr global [4 x i64] zeroinitializer
|
||||
@main.nonConst2 = local_unnamed_addr global i64 0
|
||||
|
||||
declare void @runtime.printint64(i64) unnamed_addr
|
||||
|
||||
declare void @runtime.printnl() unnamed_addr
|
||||
|
||||
define void @runtime.initAll() unnamed_addr {
|
||||
entry:
|
||||
call void @runtime.printint64(i64 5)
|
||||
call void @runtime.printnl()
|
||||
%value1 = call i64 @someValue()
|
||||
store i64 %value1, i64* getelementptr inbounds ([4 x i64], [4 x i64]* @main.nonConst1, i32 0, i32 0)
|
||||
%value2 = load i64, i64* getelementptr inbounds ([4 x i64], [4 x i64]* @main.nonConst1, i32 0, i32 0)
|
||||
store i64 %value2, i64* @main.nonConst2
|
||||
ret void
|
||||
}
|
||||
|
||||
define void @main() unnamed_addr {
|
||||
entry:
|
||||
call void @runtime.printint64(i64 3)
|
||||
call void @runtime.printnl()
|
||||
ret void
|
||||
}
|
||||
|
||||
declare i64 @someValue() local_unnamed_addr
|
||||
Vendored
-42
@@ -1,42 +0,0 @@
|
||||
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
||||
target triple = "x86_64--linux"
|
||||
|
||||
@intToPtrResult = global i8 0
|
||||
@ptrToIntResult = global i8 0
|
||||
|
||||
define void @runtime.initAll() {
|
||||
call void @main.init()
|
||||
ret void
|
||||
}
|
||||
|
||||
define internal void @main.init() {
|
||||
call void @testIntToPtr()
|
||||
call void @testPtrToInt()
|
||||
ret void
|
||||
}
|
||||
|
||||
define internal void @testIntToPtr() {
|
||||
%nil = icmp eq i8* inttoptr (i64 1024 to i8*), null
|
||||
br i1 %nil, label %a, label %b
|
||||
a:
|
||||
; should not be reached
|
||||
store i8 1, i8* @intToPtrResult
|
||||
ret void
|
||||
b:
|
||||
; should be reached
|
||||
store i8 2, i8* @intToPtrResult
|
||||
ret void
|
||||
}
|
||||
|
||||
define internal void @testPtrToInt() {
|
||||
%zero = icmp eq i64 ptrtoint (i8* @ptrToIntResult to i64), 0
|
||||
br i1 %zero, label %a, label %b
|
||||
a:
|
||||
; should not be reached
|
||||
store i8 1, i8* @ptrToIntResult
|
||||
ret void
|
||||
b:
|
||||
; should be reached
|
||||
store i8 2, i8* @ptrToIntResult
|
||||
ret void
|
||||
}
|
||||
Vendored
-9
@@ -1,9 +0,0 @@
|
||||
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
||||
target triple = "x86_64--linux"
|
||||
|
||||
@intToPtrResult = local_unnamed_addr global i8 2
|
||||
@ptrToIntResult = local_unnamed_addr global i8 2
|
||||
|
||||
define void @runtime.initAll() local_unnamed_addr {
|
||||
ret void
|
||||
}
|
||||
Vendored
-61
@@ -1,61 +0,0 @@
|
||||
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
||||
target triple = "x86_64--linux"
|
||||
|
||||
define i64 @returnsConst() {
|
||||
ret i64 0
|
||||
}
|
||||
|
||||
define i64 @returnsArg(i64 %arg) {
|
||||
ret i64 %arg
|
||||
}
|
||||
|
||||
declare i64 @externalCall()
|
||||
|
||||
define i64 @externalCallOnly() {
|
||||
%result = call i64 @externalCall()
|
||||
ret i64 0
|
||||
}
|
||||
|
||||
define i64 @externalCallAndReturn() {
|
||||
%result = call i64 @externalCall()
|
||||
ret i64 %result
|
||||
}
|
||||
|
||||
define i64 @externalCallBranch() {
|
||||
%result = call i64 @externalCall()
|
||||
%zero = icmp eq i64 %result, 0
|
||||
br i1 %zero, label %if.then, label %if.done
|
||||
|
||||
if.then:
|
||||
ret i64 2
|
||||
|
||||
if.done:
|
||||
ret i64 4
|
||||
}
|
||||
|
||||
@cleanGlobalInt = global i64 5
|
||||
define i64 @readCleanGlobal() {
|
||||
%global = load i64, i64* @cleanGlobalInt
|
||||
ret i64 %global
|
||||
}
|
||||
|
||||
@dirtyGlobalInt = global i64 5
|
||||
define i64 @readDirtyGlobal() {
|
||||
%global = load i64, i64* @dirtyGlobalInt
|
||||
ret i64 %global
|
||||
}
|
||||
|
||||
declare i64* @getDirtyPointer()
|
||||
|
||||
define void @storeToPointer() {
|
||||
%ptr = call i64* @getDirtyPointer()
|
||||
store i64 3, i64* %ptr
|
||||
ret void
|
||||
}
|
||||
|
||||
@functionPointer = global i64()* null
|
||||
define i64 @callFunctionPointer() {
|
||||
%fp = load i64()*, i64()** @functionPointer
|
||||
%result = call i64 %fp()
|
||||
ret i64 %result
|
||||
}
|
||||
Vendored
-86
@@ -1,86 +0,0 @@
|
||||
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
||||
target triple = "x86_64--linux"
|
||||
|
||||
@main.uint8SliceSrc.buf = internal global [2 x i8] c"\03d"
|
||||
@main.uint8SliceSrc = internal unnamed_addr global { i8*, i64, i64 } { i8* getelementptr inbounds ([2 x i8], [2 x i8]* @main.uint8SliceSrc.buf, i32 0, i32 0), i64 2, i64 2 }
|
||||
@main.uint8SliceDst = internal unnamed_addr global { i8*, i64, i64 } zeroinitializer
|
||||
@main.int16SliceSrc.buf = internal global [3 x i16] [i16 5, i16 123, i16 1024]
|
||||
@main.int16SliceSrc = internal unnamed_addr global { i16*, i64, i64 } { i16* getelementptr inbounds ([3 x i16], [3 x i16]* @main.int16SliceSrc.buf, i32 0, i32 0), i64 3, i64 3 }
|
||||
@main.int16SliceDst = internal unnamed_addr global { i16*, i64, i64 } zeroinitializer
|
||||
|
||||
declare i64 @runtime.sliceCopy(i8* %dst, i8* %src, i64 %dstLen, i64 %srcLen, i64 %elemSize) unnamed_addr
|
||||
|
||||
declare i8* @runtime.alloc(i64) unnamed_addr
|
||||
|
||||
declare void @runtime.printuint8(i8)
|
||||
|
||||
declare void @runtime.printint16(i16)
|
||||
|
||||
define void @runtime.initAll() unnamed_addr {
|
||||
entry:
|
||||
call void @main.init()
|
||||
ret void
|
||||
}
|
||||
|
||||
define void @main() unnamed_addr {
|
||||
entry:
|
||||
; print(uintSliceSrc[0])
|
||||
%uint8SliceSrc.buf = load i8*, i8** getelementptr inbounds ({ i8*, i64, i64 }, { i8*, i64, i64 }* @main.uint8SliceSrc, i64 0, i32 0)
|
||||
%uint8SliceSrc.val = load i8, i8* %uint8SliceSrc.buf
|
||||
call void @runtime.printuint8(i8 %uint8SliceSrc.val)
|
||||
|
||||
; print(uintSliceDst[0])
|
||||
%uint8SliceDst.buf = load i8*, i8** getelementptr inbounds ({ i8*, i64, i64 }, { i8*, i64, i64 }* @main.uint8SliceDst, i64 0, i32 0)
|
||||
%uint8SliceDst.val = load i8, i8* %uint8SliceDst.buf
|
||||
call void @runtime.printuint8(i8 %uint8SliceDst.val)
|
||||
|
||||
; print(int16SliceSrc[0])
|
||||
%int16SliceSrc.buf = load i16*, i16** getelementptr inbounds ({ i16*, i64, i64 }, { i16*, i64, i64 }* @main.int16SliceSrc, i64 0, i32 0)
|
||||
%int16SliceSrc.val = load i16, i16* %int16SliceSrc.buf
|
||||
call void @runtime.printint16(i16 %int16SliceSrc.val)
|
||||
|
||||
; print(int16SliceDst[0])
|
||||
%int16SliceDst.buf = load i16*, i16** getelementptr inbounds ({ i16*, i64, i64 }, { i16*, i64, i64 }* @main.int16SliceDst, i64 0, i32 0)
|
||||
%int16SliceDst.val = load i16, i16* %int16SliceDst.buf
|
||||
call void @runtime.printint16(i16 %int16SliceDst.val)
|
||||
ret void
|
||||
}
|
||||
|
||||
define internal void @main.init() unnamed_addr {
|
||||
entry:
|
||||
; equivalent of:
|
||||
; uint8SliceDst = make([]uint8, len(uint8SliceSrc))
|
||||
%uint8SliceSrc = load { i8*, i64, i64 }, { i8*, i64, i64 }* @main.uint8SliceSrc
|
||||
%uint8SliceSrc.len = extractvalue { i8*, i64, i64 } %uint8SliceSrc, 1
|
||||
%uint8SliceDst.buf = call i8* @runtime.alloc(i64 %uint8SliceSrc.len)
|
||||
%0 = insertvalue { i8*, i64, i64 } undef, i8* %uint8SliceDst.buf, 0
|
||||
%1 = insertvalue { i8*, i64, i64 } %0, i64 %uint8SliceSrc.len, 1
|
||||
%2 = insertvalue { i8*, i64, i64 } %1, i64 %uint8SliceSrc.len, 2
|
||||
store { i8*, i64, i64 } %2, { i8*, i64, i64 }* @main.uint8SliceDst
|
||||
|
||||
; equivalent of:
|
||||
; copy(uint8SliceDst, uint8SliceSrc)
|
||||
%uint8SliceSrc.buf = extractvalue { i8*, i64, i64 } %uint8SliceSrc, 0
|
||||
%copy.n = call i64 @runtime.sliceCopy(i8* %uint8SliceDst.buf, i8* %uint8SliceSrc.buf, i64 %uint8SliceSrc.len, i64 %uint8SliceSrc.len, i64 1)
|
||||
|
||||
; equivalent of:
|
||||
; int16SliceDst = make([]int16, len(int16SliceSrc))
|
||||
%int16SliceSrc = load { i16*, i64, i64 }, { i16*, i64, i64 }* @main.int16SliceSrc
|
||||
%int16SliceSrc.len = extractvalue { i16*, i64, i64 } %int16SliceSrc, 1
|
||||
%int16SliceSrc.len.bytes = mul i64 %int16SliceSrc.len, 2
|
||||
%int16SliceDst.buf.raw = call i8* @runtime.alloc(i64 %int16SliceSrc.len.bytes)
|
||||
%int16SliceDst.buf = bitcast i8* %int16SliceDst.buf.raw to i16*
|
||||
%3 = insertvalue { i16*, i64, i64 } undef, i16* %int16SliceDst.buf, 0
|
||||
%4 = insertvalue { i16*, i64, i64 } %3, i64 %int16SliceSrc.len, 1
|
||||
%5 = insertvalue { i16*, i64, i64 } %4, i64 %int16SliceSrc.len, 2
|
||||
store { i16*, i64, i64 } %5, { i16*, i64, i64 }* @main.int16SliceDst
|
||||
|
||||
; equivalent of:
|
||||
; copy(int16SliceDst, int16SliceSrc)
|
||||
%int16SliceSrc.buf = extractvalue { i16*, i64, i64 } %int16SliceSrc, 0
|
||||
%int16SliceSrc.buf.i8ptr = bitcast i16* %int16SliceSrc.buf to i8*
|
||||
%int16SliceDst.buf.i8ptr = bitcast i16* %int16SliceDst.buf to i8*
|
||||
%copy.n2 = call i64 @runtime.sliceCopy(i8* %int16SliceDst.buf.i8ptr, i8* %int16SliceSrc.buf.i8ptr, i64 %int16SliceSrc.len, i64 %int16SliceSrc.len, i64 2)
|
||||
|
||||
ret void
|
||||
}
|
||||
Vendored
-20
@@ -1,20 +0,0 @@
|
||||
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
||||
target triple = "x86_64--linux"
|
||||
|
||||
declare void @runtime.printuint8(i8) local_unnamed_addr
|
||||
|
||||
declare void @runtime.printint16(i16) local_unnamed_addr
|
||||
|
||||
define void @runtime.initAll() unnamed_addr {
|
||||
entry:
|
||||
ret void
|
||||
}
|
||||
|
||||
define void @main() unnamed_addr {
|
||||
entry:
|
||||
call void @runtime.printuint8(i8 3)
|
||||
call void @runtime.printuint8(i8 3)
|
||||
call void @runtime.printint16(i16 5)
|
||||
call void @runtime.printint16(i16 5)
|
||||
ret void
|
||||
}
|
||||
+45
-69
@@ -1,7 +1,7 @@
|
||||
package interp
|
||||
|
||||
import (
|
||||
"tinygo.org/x/go-llvm"
|
||||
"github.com/aykevl/go-llvm"
|
||||
)
|
||||
|
||||
// Return a list of values (actually, instructions) where this value is used as
|
||||
@@ -16,12 +16,53 @@ func getUses(value llvm.Value) []llvm.Value {
|
||||
return uses
|
||||
}
|
||||
|
||||
// Return a zero LLVM value for any LLVM type. Setting this value as an
|
||||
// initializer has the same effect as setting 'zeroinitializer' on a value.
|
||||
// Sadly, I haven't found a way to do it directly with the Go API but this works
|
||||
// just fine.
|
||||
func getZeroValue(typ llvm.Type) llvm.Value {
|
||||
switch typ.TypeKind() {
|
||||
case llvm.ArrayTypeKind:
|
||||
subTyp := typ.ElementType()
|
||||
subVal := getZeroValue(subTyp)
|
||||
vals := make([]llvm.Value, typ.ArrayLength())
|
||||
for i := range vals {
|
||||
vals[i] = subVal
|
||||
}
|
||||
return llvm.ConstArray(subTyp, vals)
|
||||
case llvm.FloatTypeKind, llvm.DoubleTypeKind:
|
||||
return llvm.ConstFloat(typ, 0.0)
|
||||
case llvm.IntegerTypeKind:
|
||||
return llvm.ConstInt(typ, 0, false)
|
||||
case llvm.PointerTypeKind:
|
||||
return llvm.ConstPointerNull(typ)
|
||||
case llvm.StructTypeKind:
|
||||
types := typ.StructElementTypes()
|
||||
vals := make([]llvm.Value, len(types))
|
||||
for i, subTyp := range types {
|
||||
val := getZeroValue(subTyp)
|
||||
vals[i] = val
|
||||
}
|
||||
if typ.StructName() != "" {
|
||||
return llvm.ConstNamedStruct(typ, vals)
|
||||
} else {
|
||||
return typ.Context().ConstStruct(vals, false)
|
||||
}
|
||||
case llvm.VectorTypeKind:
|
||||
zero := getZeroValue(typ.ElementType())
|
||||
vals := make([]llvm.Value, typ.VectorSize())
|
||||
for i := range vals {
|
||||
vals[i] = zero
|
||||
}
|
||||
return llvm.ConstVector(vals, false)
|
||||
default:
|
||||
panic("interp: unknown LLVM type: " + typ.String())
|
||||
}
|
||||
}
|
||||
|
||||
// getStringBytes loads the byte slice of a Go string represented as a
|
||||
// {ptr, len} pair.
|
||||
func getStringBytes(strPtr Value, strLen llvm.Value) []byte {
|
||||
if !strLen.IsConstant() {
|
||||
panic("getStringBytes with a non-constant length")
|
||||
}
|
||||
buf := make([]byte, strLen.ZExtValue())
|
||||
for i := range buf {
|
||||
c := strPtr.GetElementPtr([]uint32{uint32(i)}).Load()
|
||||
@@ -50,68 +91,3 @@ func isScalar(t llvm.Type) bool {
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
// isPointerNil returns whether this is a nil pointer or not. The ok value
|
||||
// indicates whether the result is certain: if it is false the result boolean is
|
||||
// not valid.
|
||||
func isPointerNil(v llvm.Value) (result bool, ok bool) {
|
||||
if !v.IsAConstantExpr().IsNil() {
|
||||
switch v.Opcode() {
|
||||
case llvm.IntToPtr:
|
||||
// Whether a constant inttoptr is nil is easy to
|
||||
// determine.
|
||||
result, ok = isZero(v.Operand(0))
|
||||
if ok {
|
||||
return
|
||||
}
|
||||
case llvm.BitCast, llvm.GetElementPtr:
|
||||
// These const instructions are just a kind of wrappers for the
|
||||
// underlying pointer.
|
||||
return isPointerNil(v.Operand(0))
|
||||
}
|
||||
}
|
||||
if !v.IsAConstantPointerNull().IsNil() {
|
||||
// A constant pointer null is always null, of course.
|
||||
return true, true
|
||||
}
|
||||
if !v.IsAGlobalValue().IsNil() {
|
||||
// A global value is never null.
|
||||
return false, true
|
||||
}
|
||||
return false, false // not valid
|
||||
}
|
||||
|
||||
// isZero returns whether the value in v is the integer zero, and whether that
|
||||
// can be known right now.
|
||||
func isZero(v llvm.Value) (result bool, ok bool) {
|
||||
if !v.IsAConstantExpr().IsNil() {
|
||||
switch v.Opcode() {
|
||||
case llvm.PtrToInt:
|
||||
return isPointerNil(v.Operand(0))
|
||||
}
|
||||
}
|
||||
if !v.IsAConstantInt().IsNil() {
|
||||
val := v.ZExtValue()
|
||||
return val == 0, true
|
||||
}
|
||||
return false, false // not valid
|
||||
}
|
||||
|
||||
// unwrap returns the underlying value, with GEPs removed. This can be useful to
|
||||
// get the underlying global of a GEP pointer.
|
||||
func unwrap(value llvm.Value) llvm.Value {
|
||||
for {
|
||||
if !value.IsAConstantExpr().IsNil() {
|
||||
switch value.Opcode() {
|
||||
case llvm.GetElementPtr:
|
||||
value = value.Operand(0)
|
||||
continue
|
||||
}
|
||||
} else if !value.IsAGetElementPtrInst().IsNil() {
|
||||
value = value.Operand(0)
|
||||
continue
|
||||
}
|
||||
break
|
||||
}
|
||||
return value
|
||||
}
|
||||
|
||||
+301
-129
@@ -5,7 +5,7 @@ package interp
|
||||
import (
|
||||
"strconv"
|
||||
|
||||
"tinygo.org/x/go-llvm"
|
||||
"github.com/aykevl/go-llvm"
|
||||
)
|
||||
|
||||
// A Value is a LLVM value with some extra methods attached for easier
|
||||
@@ -36,17 +36,11 @@ func (v *LocalValue) Type() llvm.Type {
|
||||
}
|
||||
|
||||
func (v *LocalValue) IsConstant() bool {
|
||||
if _, ok := v.Eval.dirtyGlobals[unwrap(v.Underlying)]; ok {
|
||||
return false
|
||||
}
|
||||
return v.Underlying.IsConstant()
|
||||
}
|
||||
|
||||
// Load loads a constant value if this is a constant pointer.
|
||||
// Load loads a constant value if this is a constant GEP, otherwise it panics.
|
||||
func (v *LocalValue) Load() llvm.Value {
|
||||
if !v.Underlying.IsAGlobalVariable().IsNil() {
|
||||
return v.Underlying.Initializer()
|
||||
}
|
||||
switch v.Underlying.Opcode() {
|
||||
case llvm.GetElementPtr:
|
||||
indices := v.getConstGEPIndices()
|
||||
@@ -56,37 +50,21 @@ func (v *LocalValue) Load() llvm.Value {
|
||||
global := v.Eval.getValue(v.Underlying.Operand(0))
|
||||
agg := global.Load()
|
||||
return llvm.ConstExtractValue(agg, indices[1:])
|
||||
case llvm.BitCast:
|
||||
panic("interp: load from a bitcast")
|
||||
default:
|
||||
panic("interp: load from a constant")
|
||||
}
|
||||
}
|
||||
|
||||
// Store stores to the underlying value if the value type is a pointer type,
|
||||
// Store stores to the underlying value if the value type is a constant GEP,
|
||||
// otherwise it panics.
|
||||
func (v *LocalValue) Store(value llvm.Value) {
|
||||
if !v.Underlying.IsAGlobalVariable().IsNil() {
|
||||
if !value.IsConstant() {
|
||||
v.MarkDirty()
|
||||
v.Eval.builder.CreateStore(value, v.Underlying)
|
||||
} else {
|
||||
v.Underlying.SetInitializer(value)
|
||||
}
|
||||
return
|
||||
}
|
||||
if !value.IsConstant() {
|
||||
v.MarkDirty()
|
||||
v.Eval.builder.CreateStore(value, v.Underlying)
|
||||
return
|
||||
}
|
||||
switch v.Underlying.Opcode() {
|
||||
case llvm.GetElementPtr:
|
||||
indices := v.getConstGEPIndices()
|
||||
if indices[0] != 0 {
|
||||
panic("invalid GEP")
|
||||
}
|
||||
global := &LocalValue{v.Eval, v.Underlying.Operand(0)}
|
||||
global := &GlobalValue{v.Eval, v.Underlying.Operand(0)}
|
||||
agg := global.Load()
|
||||
agg = llvm.ConstInsertValue(agg, value, indices[1:])
|
||||
global.Store(agg)
|
||||
@@ -96,40 +74,17 @@ func (v *LocalValue) Store(value llvm.Value) {
|
||||
}
|
||||
}
|
||||
|
||||
// GetElementPtr returns a GEP when the underlying value is of pointer type.
|
||||
// GetElementPtr returns a constant GEP when the underlying value is also a
|
||||
// constant GEP. It panics when the underlying value is not a constant GEP:
|
||||
// getting the pointer to a constant is not possible.
|
||||
func (v *LocalValue) GetElementPtr(indices []uint32) Value {
|
||||
if !v.Underlying.IsAGlobalVariable().IsNil() {
|
||||
switch v.Underlying.Opcode() {
|
||||
case llvm.GetElementPtr, llvm.IntToPtr:
|
||||
int32Type := v.Underlying.Type().Context().Int32Type()
|
||||
gep := llvm.ConstGEP(v.Underlying, getLLVMIndices(int32Type, indices))
|
||||
return &LocalValue{v.Eval, gep}
|
||||
}
|
||||
if !v.Underlying.IsAConstantExpr().IsNil() {
|
||||
switch v.Underlying.Opcode() {
|
||||
case llvm.GetElementPtr, llvm.IntToPtr, llvm.BitCast:
|
||||
int32Type := v.Underlying.Type().Context().Int32Type()
|
||||
llvmIndices := getLLVMIndices(int32Type, indices)
|
||||
return &LocalValue{v.Eval, llvm.ConstGEP(v.Underlying, llvmIndices)}
|
||||
}
|
||||
}
|
||||
panic("interp: unknown GEP")
|
||||
}
|
||||
|
||||
// stripPointerCasts removes all const bitcasts from pointer values, if there
|
||||
// are any.
|
||||
func (v *LocalValue) stripPointerCasts() *LocalValue {
|
||||
value := v.Underlying
|
||||
for {
|
||||
if !value.IsAConstantExpr().IsNil() {
|
||||
switch value.Opcode() {
|
||||
case llvm.BitCast:
|
||||
value = value.Operand(0)
|
||||
continue
|
||||
}
|
||||
}
|
||||
return &LocalValue{
|
||||
Eval: v.Eval,
|
||||
Underlying: value,
|
||||
}
|
||||
llvmIndices := getLLVMIndices(int32Type, indices)
|
||||
return &LocalValue{v.Eval, llvm.ConstGEP(v.Underlying, llvmIndices)}
|
||||
default:
|
||||
panic("interp: GEP on a constant")
|
||||
}
|
||||
}
|
||||
|
||||
@@ -152,17 +107,281 @@ func (v *LocalValue) getConstGEPIndices() []uint32 {
|
||||
return indices
|
||||
}
|
||||
|
||||
// GlobalValue wraps a LLVM global variable.
|
||||
type GlobalValue struct {
|
||||
Eval *Eval
|
||||
Underlying llvm.Value
|
||||
}
|
||||
|
||||
// Value returns the initializer for this global variable.
|
||||
func (v *GlobalValue) Value() llvm.Value {
|
||||
return v.Underlying
|
||||
}
|
||||
|
||||
// Type returns the type of this global variable, which is a pointer type. Use
|
||||
// Type().ElementType() to get the actual global variable type.
|
||||
func (v *GlobalValue) Type() llvm.Type {
|
||||
return v.Underlying.Type()
|
||||
}
|
||||
|
||||
// IsConstant returns true if this global is not dirty, false otherwise.
|
||||
func (v *GlobalValue) IsConstant() bool {
|
||||
if _, ok := v.Eval.dirtyGlobals[v.Underlying]; ok {
|
||||
return false
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// Load returns the initializer of the global variable.
|
||||
func (v *GlobalValue) Load() llvm.Value {
|
||||
return v.Underlying.Initializer()
|
||||
}
|
||||
|
||||
// Store sets the initializer of the global variable.
|
||||
func (v *GlobalValue) Store(value llvm.Value) {
|
||||
if !value.IsConstant() {
|
||||
v.MarkDirty()
|
||||
v.Eval.builder.CreateStore(value, v.Underlying)
|
||||
} else {
|
||||
v.Underlying.SetInitializer(value)
|
||||
}
|
||||
}
|
||||
|
||||
// GetElementPtr returns a constant GEP on this global, which can be used in
|
||||
// load and store instructions.
|
||||
func (v *GlobalValue) GetElementPtr(indices []uint32) Value {
|
||||
int32Type := v.Underlying.Type().Context().Int32Type()
|
||||
gep := llvm.ConstGEP(v.Underlying, getLLVMIndices(int32Type, indices))
|
||||
return &LocalValue{v.Eval, gep}
|
||||
}
|
||||
|
||||
func (v *GlobalValue) String() string {
|
||||
return "&GlobalValue{" + v.Underlying.Name() + "}"
|
||||
}
|
||||
|
||||
// MarkDirty marks this global as dirty, meaning that every load from and store
|
||||
// to this global (from now on) must be performed at runtime.
|
||||
func (v *LocalValue) MarkDirty() {
|
||||
underlying := unwrap(v.Underlying)
|
||||
if underlying.IsAGlobalVariable().IsNil() {
|
||||
panic("trying to mark a non-global as dirty")
|
||||
}
|
||||
func (v *GlobalValue) MarkDirty() {
|
||||
if !v.IsConstant() {
|
||||
return // already dirty
|
||||
}
|
||||
v.Eval.dirtyGlobals[underlying] = struct{}{}
|
||||
v.Eval.dirtyGlobals[v.Underlying] = struct{}{}
|
||||
}
|
||||
|
||||
// An alloca represents a local alloca, which is a stack allocated variable.
|
||||
// It is emulated by storing the constant of the alloca.
|
||||
type AllocaValue struct {
|
||||
Eval *Eval
|
||||
Underlying llvm.Value // the constant value itself if not dirty, otherwise the alloca instruction
|
||||
Dirty bool // this value must be evaluated at runtime
|
||||
}
|
||||
|
||||
// Value turns this alloca into a runtime alloca instead of a compile-time
|
||||
// constant (if not already converted), and returns the alloca itself.
|
||||
func (v *AllocaValue) Value() llvm.Value {
|
||||
if !v.Dirty {
|
||||
// Mark this alloca a dirty, meaning it is run at runtime instead of
|
||||
// compile time.
|
||||
alloca := v.Eval.builder.CreateAlloca(v.Underlying.Type(), "")
|
||||
v.Eval.builder.CreateStore(v.Underlying, alloca)
|
||||
v.Dirty = true
|
||||
v.Underlying = alloca
|
||||
}
|
||||
return v.Underlying
|
||||
}
|
||||
|
||||
// Type returns the type of this alloca, which is always a pointer.
|
||||
func (v *AllocaValue) Type() llvm.Type {
|
||||
if v.Dirty {
|
||||
return v.Underlying.Type()
|
||||
} else {
|
||||
return llvm.PointerType(v.Underlying.Type(), 0)
|
||||
}
|
||||
}
|
||||
|
||||
func (v *AllocaValue) IsConstant() bool {
|
||||
return !v.Dirty
|
||||
}
|
||||
|
||||
// Load returns the value this alloca contains, which may be evaluated at
|
||||
// runtime.
|
||||
func (v *AllocaValue) Load() llvm.Value {
|
||||
if v.Dirty {
|
||||
ret := v.Eval.builder.CreateLoad(v.Underlying, "")
|
||||
if ret.IsNil() {
|
||||
panic("alloca is nil")
|
||||
}
|
||||
return ret
|
||||
} else {
|
||||
if v.Underlying.IsNil() {
|
||||
panic("alloca is nil")
|
||||
}
|
||||
return v.Underlying
|
||||
}
|
||||
}
|
||||
|
||||
// Store updates the value of this alloca.
|
||||
func (v *AllocaValue) Store(value llvm.Value) {
|
||||
if v.Underlying.Type() != value.Type() {
|
||||
panic("interp: trying to store to an alloca with a different type")
|
||||
}
|
||||
if v.Dirty || !value.IsConstant() {
|
||||
v.Eval.builder.CreateStore(value, v.Value())
|
||||
} else {
|
||||
v.Underlying = value
|
||||
}
|
||||
}
|
||||
|
||||
// GetElementPtr returns a value (a *GetElementPtrValue) that keeps a reference
|
||||
// to this alloca, so that Load() and Store() continue to work.
|
||||
func (v *AllocaValue) GetElementPtr(indices []uint32) Value {
|
||||
return &GetElementPtrValue{v, indices}
|
||||
}
|
||||
|
||||
func (v *AllocaValue) String() string {
|
||||
return "&AllocaValue{Type: " + v.Type().String() + "}"
|
||||
}
|
||||
|
||||
// GetElementPtrValue wraps an alloca, keeping track of what the GEP points to
|
||||
// so it can be used as a pointer value (with Load() and Store()).
|
||||
type GetElementPtrValue struct {
|
||||
Alloca *AllocaValue
|
||||
Indices []uint32
|
||||
}
|
||||
|
||||
// Type returns the type of this GEP, which is always of type pointer.
|
||||
func (v *GetElementPtrValue) Type() llvm.Type {
|
||||
if v.Alloca.Dirty {
|
||||
return v.Value().Type()
|
||||
} else {
|
||||
return llvm.PointerType(v.Load().Type(), 0)
|
||||
}
|
||||
}
|
||||
|
||||
func (v *GetElementPtrValue) IsConstant() bool {
|
||||
return v.Alloca.IsConstant()
|
||||
}
|
||||
|
||||
// Value creates the LLVM GEP instruction of this GetElementPtrValue wrapper and
|
||||
// returns it.
|
||||
func (v *GetElementPtrValue) Value() llvm.Value {
|
||||
if v.Alloca.Dirty {
|
||||
alloca := v.Alloca.Value()
|
||||
int32Type := v.Alloca.Type().Context().Int32Type()
|
||||
llvmIndices := getLLVMIndices(int32Type, v.Indices)
|
||||
return v.Alloca.Eval.builder.CreateGEP(alloca, llvmIndices, "")
|
||||
} else {
|
||||
panic("interp: todo: pointer to alloca gep")
|
||||
}
|
||||
}
|
||||
|
||||
// Load deferences the pointer this GEP points to. For a constant GEP, it
|
||||
// extracts the value from the underlying alloca.
|
||||
func (v *GetElementPtrValue) Load() llvm.Value {
|
||||
if v.Alloca.Dirty {
|
||||
gep := v.Value()
|
||||
return v.Alloca.Eval.builder.CreateLoad(gep, "")
|
||||
} else {
|
||||
underlying := v.Alloca.Load()
|
||||
indices := v.Indices
|
||||
if indices[0] != 0 {
|
||||
panic("invalid GEP")
|
||||
}
|
||||
return llvm.ConstExtractValue(underlying, indices[1:])
|
||||
}
|
||||
}
|
||||
|
||||
// Store stores to the pointer this GEP points to. For a constant GEP, it
|
||||
// updates the underlying allloca.
|
||||
func (v *GetElementPtrValue) Store(value llvm.Value) {
|
||||
if v.Alloca.Dirty || !value.IsConstant() {
|
||||
alloca := v.Alloca.Value()
|
||||
int32Type := v.Alloca.Type().Context().Int32Type()
|
||||
llvmIndices := getLLVMIndices(int32Type, v.Indices)
|
||||
gep := v.Alloca.Eval.builder.CreateGEP(alloca, llvmIndices, "")
|
||||
v.Alloca.Eval.builder.CreateStore(value, gep)
|
||||
} else {
|
||||
underlying := v.Alloca.Load()
|
||||
indices := v.Indices
|
||||
if indices[0] != 0 {
|
||||
panic("invalid GEP")
|
||||
}
|
||||
underlying = llvm.ConstInsertValue(underlying, value, indices[1:])
|
||||
v.Alloca.Store(underlying)
|
||||
}
|
||||
}
|
||||
|
||||
func (v *GetElementPtrValue) GetElementPtr(indices []uint32) Value {
|
||||
if v.Alloca.Dirty {
|
||||
panic("interp: todo: gep on a dirty gep")
|
||||
} else {
|
||||
combined := append([]uint32{}, v.Indices...)
|
||||
combined[len(combined)-1] += indices[0]
|
||||
combined = append(combined, indices[1:]...)
|
||||
return &GetElementPtrValue{v.Alloca, combined}
|
||||
}
|
||||
}
|
||||
|
||||
func (v *GetElementPtrValue) String() string {
|
||||
indices := ""
|
||||
for _, n := range v.Indices {
|
||||
if indices != "" {
|
||||
indices += ", "
|
||||
}
|
||||
indices += strconv.Itoa(int(n))
|
||||
}
|
||||
return "&GetElementPtrValue{Alloca: " + v.Alloca.String() + ", Indices: [" + indices + "]}"
|
||||
}
|
||||
|
||||
// PointerCastValue represents a bitcast operation on a pointer.
|
||||
type PointerCastValue struct {
|
||||
Eval *Eval
|
||||
Underlying Value
|
||||
CastType llvm.Type
|
||||
}
|
||||
|
||||
// Value returns a constant bitcast value.
|
||||
func (v *PointerCastValue) Value() llvm.Value {
|
||||
from := v.Underlying.Value()
|
||||
return llvm.ConstBitCast(from, v.CastType)
|
||||
}
|
||||
|
||||
// Type returns the type this pointer has been cast to.
|
||||
func (v *PointerCastValue) Type() llvm.Type {
|
||||
return v.CastType
|
||||
}
|
||||
|
||||
func (v *PointerCastValue) IsConstant() bool {
|
||||
return v.Underlying.IsConstant()
|
||||
}
|
||||
|
||||
// Load tries to load and bitcast the given value. If this value cannot be
|
||||
// bitcasted, Load panics.
|
||||
func (v *PointerCastValue) Load() llvm.Value {
|
||||
if v.Underlying.IsConstant() {
|
||||
typeFrom := v.Underlying.Type().ElementType()
|
||||
typeTo := v.CastType.ElementType()
|
||||
if isScalar(typeFrom) && isScalar(typeTo) && v.Eval.TargetData.TypeAllocSize(typeFrom) == v.Eval.TargetData.TypeAllocSize(typeTo) {
|
||||
return llvm.ConstBitCast(v.Underlying.Load(), v.CastType.ElementType())
|
||||
}
|
||||
}
|
||||
|
||||
panic("interp: load from a pointer bitcast: " + v.String())
|
||||
}
|
||||
|
||||
// Store panics: it is not (yet) possible to store directly to a bitcast.
|
||||
func (v *PointerCastValue) Store(value llvm.Value) {
|
||||
panic("interp: store on a pointer bitcast")
|
||||
}
|
||||
|
||||
// GetElementPtr panics: it is not (yet) possible to do a GEP operation on a
|
||||
// bitcast.
|
||||
func (v *PointerCastValue) GetElementPtr(indices []uint32) Value {
|
||||
panic("interp: GEP on a pointer bitcast")
|
||||
}
|
||||
|
||||
func (v *PointerCastValue) String() string {
|
||||
return "&PointerCastValue{Value: " + v.Underlying.String() + ", CastType: " + v.CastType.String() + "}"
|
||||
}
|
||||
|
||||
// MapValue implements a Go map which is created at compile time and stored as a
|
||||
@@ -188,7 +407,7 @@ func (v *MapValue) newBucket() llvm.Value {
|
||||
llvm.ArrayType(v.KeyType, 8), // key type
|
||||
llvm.ArrayType(v.ValueType, 8), // value type
|
||||
}, false)
|
||||
bucketValue := llvm.ConstNull(bucketType)
|
||||
bucketValue := getZeroValue(bucketType)
|
||||
bucket := llvm.AddGlobal(v.Eval.Mod, bucketType, v.PkgName+"$mapbucket")
|
||||
bucket.SetInitializer(bucketValue)
|
||||
bucket.SetLinkage(llvm.InternalLinkage)
|
||||
@@ -232,13 +451,6 @@ func (v *MapValue) Value() llvm.Value {
|
||||
keyBuf[i] = byte(n)
|
||||
n >>= 8
|
||||
}
|
||||
} else if key.Type().TypeKind() == llvm.ArrayTypeKind &&
|
||||
key.Type().ElementType().TypeKind() == llvm.IntegerTypeKind &&
|
||||
key.Type().ElementType().IntTypeWidth() == 8 {
|
||||
keyBuf = make([]byte, v.Eval.TargetData.TypeAllocSize(key.Type()))
|
||||
for i := range keyBuf {
|
||||
keyBuf[i] = byte(llvm.ConstExtractValue(llvmKey, []uint32{uint32(i)}).ZExtValue())
|
||||
}
|
||||
} else {
|
||||
panic("interp: map key type not implemented: " + key.Type().String())
|
||||
}
|
||||
@@ -315,29 +527,32 @@ func (v *MapValue) GetElementPtr(indices []uint32) Value {
|
||||
|
||||
// PutString does a map assign operation, assuming that the map is of type
|
||||
// map[string]T.
|
||||
func (v *MapValue) PutString(keyBuf, keyLen, valPtr *LocalValue) {
|
||||
func (v *MapValue) PutString(keyBuf, keyLen, valPtr Value) {
|
||||
if !v.Underlying.IsNil() {
|
||||
panic("map already created")
|
||||
}
|
||||
|
||||
if valPtr.Underlying.Opcode() == llvm.BitCast {
|
||||
valPtr = &LocalValue{v.Eval, valPtr.Underlying.Operand(0)}
|
||||
}
|
||||
value := valPtr.Load()
|
||||
if v.ValueType.IsNil() {
|
||||
v.ValueType = value.Type()
|
||||
if int(v.Eval.TargetData.TypeAllocSize(v.ValueType)) != v.ValueSize {
|
||||
panic("interp: map store value type has the wrong size")
|
||||
}
|
||||
} else {
|
||||
if value.Type() != v.ValueType {
|
||||
panic("interp: map store value type is inconsistent")
|
||||
var value llvm.Value
|
||||
switch valPtr := valPtr.(type) {
|
||||
case *PointerCastValue:
|
||||
value = valPtr.Underlying.Load()
|
||||
if v.ValueType.IsNil() {
|
||||
v.ValueType = value.Type()
|
||||
if int(v.Eval.TargetData.TypeAllocSize(v.ValueType)) != v.ValueSize {
|
||||
panic("interp: map store value type has the wrong size")
|
||||
}
|
||||
} else {
|
||||
if value.Type() != v.ValueType {
|
||||
panic("interp: map store value type is inconsistent")
|
||||
}
|
||||
}
|
||||
default:
|
||||
panic("interp: todo: handle map value pointer")
|
||||
}
|
||||
|
||||
keyType := v.Eval.Mod.GetTypeByName("runtime._string")
|
||||
v.KeyType = keyType
|
||||
key := llvm.ConstNull(keyType)
|
||||
key := getZeroValue(keyType)
|
||||
key = llvm.ConstInsertValue(key, keyBuf.Value(), []uint32{0})
|
||||
key = llvm.ConstInsertValue(key, keyLen.Value(), []uint32{1})
|
||||
|
||||
@@ -346,49 +561,6 @@ func (v *MapValue) PutString(keyBuf, keyLen, valPtr *LocalValue) {
|
||||
v.Values = append(v.Values, &LocalValue{v.Eval, value})
|
||||
}
|
||||
|
||||
// PutBinary does a map assign operation.
|
||||
func (v *MapValue) PutBinary(keyPtr, valPtr *LocalValue) {
|
||||
if !v.Underlying.IsNil() {
|
||||
panic("map already created")
|
||||
}
|
||||
|
||||
if valPtr.Underlying.Opcode() == llvm.BitCast {
|
||||
valPtr = &LocalValue{v.Eval, valPtr.Underlying.Operand(0)}
|
||||
}
|
||||
value := valPtr.Load()
|
||||
if v.ValueType.IsNil() {
|
||||
v.ValueType = value.Type()
|
||||
if int(v.Eval.TargetData.TypeAllocSize(v.ValueType)) != v.ValueSize {
|
||||
panic("interp: map store value type has the wrong size")
|
||||
}
|
||||
} else {
|
||||
if value.Type() != v.ValueType {
|
||||
panic("interp: map store value type is inconsistent")
|
||||
}
|
||||
}
|
||||
|
||||
if keyPtr.Underlying.Opcode() == llvm.BitCast {
|
||||
keyPtr = &LocalValue{v.Eval, keyPtr.Underlying.Operand(0)}
|
||||
} else if keyPtr.Underlying.Opcode() == llvm.GetElementPtr {
|
||||
keyPtr = &LocalValue{v.Eval, keyPtr.Underlying.Operand(0)}
|
||||
}
|
||||
key := keyPtr.Load()
|
||||
if v.KeyType.IsNil() {
|
||||
v.KeyType = key.Type()
|
||||
if int(v.Eval.TargetData.TypeAllocSize(v.KeyType)) != v.KeySize {
|
||||
panic("interp: map store key type has the wrong size")
|
||||
}
|
||||
} else {
|
||||
if key.Type() != v.KeyType {
|
||||
panic("interp: map store key type is inconsistent")
|
||||
}
|
||||
}
|
||||
|
||||
// TODO: avoid duplicate keys
|
||||
v.Keys = append(v.Keys, &LocalValue{v.Eval, key})
|
||||
v.Values = append(v.Values, &LocalValue{v.Eval, value})
|
||||
}
|
||||
|
||||
// Get FNV-1a hash of this string.
|
||||
//
|
||||
// https://en.wikipedia.org/wiki/Fowler%E2%80%93Noll%E2%80%93Vo_hash_function#FNV-1a_hash
|
||||
|
||||
@@ -0,0 +1,522 @@
|
||||
package ir
|
||||
|
||||
// This file provides functionality to interpret very basic Go SSA, for
|
||||
// compile-time initialization of globals.
|
||||
|
||||
import (
|
||||
"errors"
|
||||
"fmt"
|
||||
"go/constant"
|
||||
"go/token"
|
||||
"go/types"
|
||||
"strings"
|
||||
|
||||
"golang.org/x/tools/go/ssa"
|
||||
)
|
||||
|
||||
var ErrCGoWrapper = errors.New("tinygo internal: cgo wrapper") // a signal, not an error
|
||||
|
||||
// Ignore these calls (replace with a zero return value) when encountered during
|
||||
// interpretation.
|
||||
var ignoreInitCalls = map[string]struct{}{
|
||||
"syscall.runtime_envs": struct{}{},
|
||||
"syscall/js.predefValue": struct{}{},
|
||||
"(syscall/js.Value).Get": struct{}{},
|
||||
"(syscall/js.Value).New": struct{}{},
|
||||
"(syscall/js.Value).Int": struct{}{},
|
||||
"os.init$1": struct{}{},
|
||||
}
|
||||
|
||||
// Interpret instructions as far as possible, and drop those instructions from
|
||||
// the basic block.
|
||||
func (p *Program) Interpret(block *ssa.BasicBlock, dumpSSA bool) error {
|
||||
if dumpSSA {
|
||||
fmt.Printf("\ninterpret: %s\n", block.Parent().Pkg.Pkg.Path())
|
||||
}
|
||||
for {
|
||||
i, err := p.interpret(block.Instrs, nil, nil, nil, dumpSSA)
|
||||
if err == ErrCGoWrapper {
|
||||
// skip this instruction
|
||||
block.Instrs = block.Instrs[i+1:]
|
||||
continue
|
||||
}
|
||||
block.Instrs = block.Instrs[i:]
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
// Interpret instructions as far as possible, and return the index of the first
|
||||
// unknown instruction.
|
||||
func (p *Program) interpret(instrs []ssa.Instruction, paramKeys []*ssa.Parameter, paramValues []Value, results []Value, dumpSSA bool) (int, error) {
|
||||
locals := map[ssa.Value]Value{}
|
||||
for i, key := range paramKeys {
|
||||
locals[key] = paramValues[i]
|
||||
}
|
||||
for i, instr := range instrs {
|
||||
if _, ok := instr.(*ssa.DebugRef); ok {
|
||||
continue
|
||||
}
|
||||
if dumpSSA {
|
||||
if val, ok := instr.(ssa.Value); ok && val.Name() != "" {
|
||||
fmt.Printf("\t%s: %s = %s\n", instr.Parent().RelString(nil), val.Name(), val.String())
|
||||
} else {
|
||||
fmt.Printf("\t%s: %s\n", instr.Parent().RelString(nil), instr.String())
|
||||
}
|
||||
}
|
||||
switch instr := instr.(type) {
|
||||
case *ssa.Alloc:
|
||||
alloc, err := p.getZeroValue(instr.Type().Underlying().(*types.Pointer).Elem())
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
locals[instr] = &PointerValue{nil, &alloc}
|
||||
case *ssa.BinOp:
|
||||
if typ, ok := instr.Type().(*types.Basic); ok && typ.Kind() == types.String {
|
||||
// Concatenate two strings.
|
||||
// This happens in the time package, for example.
|
||||
x, err := p.getValue(instr.X, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
y, err := p.getValue(instr.Y, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
xstr := constant.StringVal(x.(*ConstValue).Expr.Value)
|
||||
ystr := constant.StringVal(y.(*ConstValue).Expr.Value)
|
||||
locals[instr] = &ConstValue{ssa.NewConst(constant.MakeString(xstr+ystr), types.Typ[types.String])}
|
||||
} else {
|
||||
return i, errors.New("init: unknown binop: " + instr.String())
|
||||
}
|
||||
case *ssa.Call:
|
||||
common := instr.Common()
|
||||
callee := common.StaticCallee()
|
||||
if callee == nil {
|
||||
return i, nil // don't understand dynamic dispatch
|
||||
}
|
||||
if _, ok := ignoreInitCalls[callee.String()]; ok {
|
||||
// These calls are not needed and can be ignored, for the time
|
||||
// being.
|
||||
results := make([]Value, callee.Signature.Results().Len())
|
||||
for i := range results {
|
||||
var err error
|
||||
results[i], err = p.getZeroValue(callee.Signature.Results().At(i).Type())
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
}
|
||||
if len(results) == 1 {
|
||||
locals[instr] = results[0]
|
||||
} else if len(results) > 1 {
|
||||
locals[instr] = &StructValue{Fields: results}
|
||||
}
|
||||
continue
|
||||
}
|
||||
if callee.String() == "os.NewFile" {
|
||||
// Emulate the creation of os.Stdin, os.Stdout and os.Stderr.
|
||||
resultPtrType := callee.Signature.Results().At(0).Type().(*types.Pointer)
|
||||
resultStructOuterType := resultPtrType.Elem().Underlying().(*types.Struct)
|
||||
if resultStructOuterType.NumFields() != 1 {
|
||||
panic("expected 1 field in os.File struct")
|
||||
}
|
||||
fileInnerPtrType := resultStructOuterType.Field(0).Type().(*types.Pointer)
|
||||
fileInnerType := fileInnerPtrType.Elem().(*types.Named)
|
||||
fileInnerStructType := fileInnerType.Underlying().(*types.Struct)
|
||||
fileInner, err := p.getZeroValue(fileInnerType) // os.file
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
for fieldIndex := 0; fieldIndex < fileInnerStructType.NumFields(); fieldIndex++ {
|
||||
field := fileInnerStructType.Field(fieldIndex)
|
||||
if field.Name() == "name" {
|
||||
// Set the 'name' field.
|
||||
name, err := p.getValue(common.Args[1], locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
fileInner.(*StructValue).Fields[fieldIndex] = name
|
||||
} else if field.Type().String() == "internal/poll.FD" {
|
||||
// Set the file descriptor field.
|
||||
field := field.Type().Underlying().(*types.Struct)
|
||||
for subfieldIndex := 0; subfieldIndex < field.NumFields(); subfieldIndex++ {
|
||||
subfield := field.Field(subfieldIndex)
|
||||
if subfield.Name() == "Sysfd" {
|
||||
sysfd, err := p.getValue(common.Args[0], locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
sysfd = &ConstValue{Expr: ssa.NewConst(sysfd.(*ConstValue).Expr.Value, subfield.Type())}
|
||||
fileInner.(*StructValue).Fields[fieldIndex].(*StructValue).Fields[subfieldIndex] = sysfd
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
fileInnerPtr := &PointerValue{fileInnerPtrType, &fileInner} // *os.file
|
||||
var fileOuter Value = &StructValue{Type: resultPtrType.Elem(), Fields: []Value{fileInnerPtr}} // os.File
|
||||
result := &PointerValue{resultPtrType.Elem(), &fileOuter} // *os.File
|
||||
locals[instr] = result
|
||||
continue
|
||||
}
|
||||
if canInterpret(callee) {
|
||||
params := make([]Value, len(common.Args))
|
||||
for i, arg := range common.Args {
|
||||
val, err := p.getValue(arg, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
params[i] = val
|
||||
}
|
||||
results := make([]Value, callee.Signature.Results().Len())
|
||||
subi, err := p.interpret(callee.Blocks[0].Instrs, callee.Params, params, results, dumpSSA)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
if subi != len(callee.Blocks[0].Instrs) {
|
||||
return i, errors.New("init: could not interpret all instructions of subroutine")
|
||||
}
|
||||
if len(results) == 1 {
|
||||
locals[instr] = results[0]
|
||||
} else {
|
||||
panic("unimplemented: not exactly 1 result")
|
||||
}
|
||||
continue
|
||||
}
|
||||
if callee.Object() == nil || callee.Object().Name() == "init" {
|
||||
return i, nil // arrived at the init#num functions
|
||||
}
|
||||
return i, errors.New("todo: init call: " + callee.String())
|
||||
case *ssa.ChangeType:
|
||||
x, err := p.getValue(instr.X, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
// The only case when we need to bitcast is when casting between named
|
||||
// struct types, as those are actually different in LLVM. Let's just
|
||||
// bitcast all struct types for ease of use.
|
||||
if _, ok := instr.Type().Underlying().(*types.Struct); ok {
|
||||
return i, errors.New("todo: init: " + instr.String())
|
||||
}
|
||||
locals[instr] = x
|
||||
case *ssa.Convert:
|
||||
x, err := p.getValue(instr.X, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
typeFrom := instr.X.Type().Underlying()
|
||||
switch typeTo := instr.Type().Underlying().(type) {
|
||||
case *types.Basic:
|
||||
if typeTo.Kind() == types.String {
|
||||
return i, nil
|
||||
}
|
||||
|
||||
if _, ok := typeFrom.(*types.Pointer); ok && typeTo.Kind() == types.UnsafePointer {
|
||||
locals[instr] = &PointerBitCastValue{typeTo, x}
|
||||
} else if typeFrom, ok := typeFrom.(*types.Basic); ok {
|
||||
if typeFrom.Kind() == types.UnsafePointer && typeTo.Kind() == types.Uintptr {
|
||||
locals[instr] = &PointerToUintptrValue{x}
|
||||
} else if typeFrom.Info()&types.IsInteger != 0 && typeTo.Info()&types.IsInteger != 0 {
|
||||
locals[instr] = &ConstValue{Expr: ssa.NewConst(x.(*ConstValue).Expr.Value, typeTo)}
|
||||
} else {
|
||||
return i, nil
|
||||
}
|
||||
} else {
|
||||
return i, nil
|
||||
}
|
||||
case *types.Pointer:
|
||||
if typeFrom, ok := typeFrom.(*types.Basic); ok && typeFrom.Kind() == types.UnsafePointer {
|
||||
locals[instr] = &PointerBitCastValue{typeTo, x}
|
||||
} else {
|
||||
panic("expected unsafe pointer conversion")
|
||||
}
|
||||
default:
|
||||
return i, nil
|
||||
}
|
||||
case *ssa.DebugRef:
|
||||
// ignore
|
||||
case *ssa.Extract:
|
||||
tuple, err := p.getValue(instr.Tuple, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
locals[instr] = tuple.(*StructValue).Fields[instr.Index]
|
||||
case *ssa.FieldAddr:
|
||||
x, err := p.getValue(instr.X, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
var structVal *StructValue
|
||||
switch x := x.(type) {
|
||||
case *GlobalValue:
|
||||
structVal = x.Global.initializer.(*StructValue)
|
||||
case *PointerValue:
|
||||
structVal = (*x.Elem).(*StructValue)
|
||||
default:
|
||||
panic("expected a pointer")
|
||||
}
|
||||
locals[instr] = &PointerValue{nil, &structVal.Fields[instr.Field]}
|
||||
case *ssa.IndexAddr:
|
||||
x, err := p.getValue(instr.X, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
if cnst, ok := instr.Index.(*ssa.Const); ok {
|
||||
index, _ := constant.Int64Val(cnst.Value)
|
||||
switch xPtr := x.(type) {
|
||||
case *GlobalValue:
|
||||
x = xPtr.Global.initializer
|
||||
case *PointerValue:
|
||||
x = *xPtr.Elem
|
||||
default:
|
||||
panic("expected a pointer")
|
||||
}
|
||||
switch x := x.(type) {
|
||||
case *ArrayValue:
|
||||
locals[instr] = &PointerValue{nil, &x.Elems[index]}
|
||||
default:
|
||||
return i, errors.New("todo: init IndexAddr not on an array or struct")
|
||||
}
|
||||
} else {
|
||||
return i, errors.New("todo: init IndexAddr index: " + instr.Index.String())
|
||||
}
|
||||
case *ssa.MakeMap:
|
||||
locals[instr] = &MapValue{instr.Type().Underlying().(*types.Map), nil, nil}
|
||||
case *ssa.MapUpdate:
|
||||
// Assume no duplicate keys exist. This is most likely true for
|
||||
// autogenerated code, but may not be true when trying to interpret
|
||||
// user code.
|
||||
key, err := p.getValue(instr.Key, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
value, err := p.getValue(instr.Value, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
x := locals[instr.Map].(*MapValue)
|
||||
x.Keys = append(x.Keys, key)
|
||||
x.Values = append(x.Values, value)
|
||||
case *ssa.Return:
|
||||
for i, r := range instr.Results {
|
||||
val, err := p.getValue(r, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
results[i] = val
|
||||
}
|
||||
case *ssa.Slice:
|
||||
// Turn a just-allocated array into a slice.
|
||||
if instr.Low != nil || instr.High != nil || instr.Max != nil {
|
||||
return i, errors.New("init: slice expression with bounds")
|
||||
}
|
||||
source, err := p.getValue(instr.X, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
switch source := source.(type) {
|
||||
case *PointerValue: // pointer to array
|
||||
array := (*source.Elem).(*ArrayValue)
|
||||
locals[instr] = &SliceValue{instr.Type().Underlying().(*types.Slice), array}
|
||||
default:
|
||||
return i, errors.New("init: unknown slice type")
|
||||
}
|
||||
case *ssa.Store:
|
||||
if addr, ok := instr.Addr.(*ssa.Global); ok {
|
||||
if strings.HasPrefix(instr.Addr.Name(), "__cgofn__cgo_") || strings.HasPrefix(instr.Addr.Name(), "_cgo_") {
|
||||
// Ignore CGo global variables which we don't use.
|
||||
continue
|
||||
}
|
||||
value, err := p.getValue(instr.Val, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
p.GetGlobal(addr).initializer = value
|
||||
} else if addr, ok := locals[instr.Addr]; ok {
|
||||
value, err := p.getValue(instr.Val, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
if addr, ok := addr.(*PointerValue); ok {
|
||||
*(addr.Elem) = value
|
||||
} else {
|
||||
panic("store to non-pointer")
|
||||
}
|
||||
} else {
|
||||
return i, errors.New("todo: init Store: " + instr.String())
|
||||
}
|
||||
case *ssa.UnOp:
|
||||
if instr.Op != token.MUL || instr.CommaOk {
|
||||
return i, errors.New("init: unknown unop: " + instr.String())
|
||||
}
|
||||
valPtr, err := p.getValue(instr.X, locals)
|
||||
if err != nil {
|
||||
return i, err
|
||||
}
|
||||
switch valPtr := valPtr.(type) {
|
||||
case *GlobalValue:
|
||||
locals[instr] = valPtr.Global.initializer
|
||||
case *PointerValue:
|
||||
locals[instr] = *valPtr.Elem
|
||||
default:
|
||||
panic("expected a pointer")
|
||||
}
|
||||
default:
|
||||
return i, nil
|
||||
}
|
||||
}
|
||||
return len(instrs), nil
|
||||
}
|
||||
|
||||
// Check whether this function can be interpreted at compile time. For that, it
|
||||
// needs to only contain relatively simple instructions (for example, no control
|
||||
// flow).
|
||||
func canInterpret(callee *ssa.Function) bool {
|
||||
if len(callee.Blocks) != 1 || callee.Signature.Results().Len() != 1 {
|
||||
// No control flow supported so only one basic block.
|
||||
// Only exactly one return value supported right now so check that as
|
||||
// well.
|
||||
return false
|
||||
}
|
||||
for _, instr := range callee.Blocks[0].Instrs {
|
||||
switch instr.(type) {
|
||||
// Ignore all functions fully supported by Program.interpret()
|
||||
// above.
|
||||
case *ssa.Alloc:
|
||||
case *ssa.ChangeType:
|
||||
case *ssa.DebugRef:
|
||||
case *ssa.Extract:
|
||||
case *ssa.FieldAddr:
|
||||
case *ssa.IndexAddr:
|
||||
case *ssa.MakeMap:
|
||||
case *ssa.MapUpdate:
|
||||
case *ssa.Return:
|
||||
case *ssa.Slice:
|
||||
case *ssa.Store:
|
||||
case *ssa.UnOp:
|
||||
default:
|
||||
return false
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
func (p *Program) getValue(value ssa.Value, locals map[ssa.Value]Value) (Value, error) {
|
||||
switch value := value.(type) {
|
||||
case *ssa.Const:
|
||||
return &ConstValue{value}, nil
|
||||
case *ssa.Function:
|
||||
return &FunctionValue{value.Type(), value}, nil
|
||||
case *ssa.Global:
|
||||
if strings.HasPrefix(value.Name(), "__cgofn__cgo_") || strings.HasPrefix(value.Name(), "_cgo_") {
|
||||
// Ignore CGo global variables which we don't use.
|
||||
return nil, ErrCGoWrapper
|
||||
}
|
||||
g := p.GetGlobal(value)
|
||||
if g.initializer == nil {
|
||||
value, err := p.getZeroValue(value.Type().Underlying().(*types.Pointer).Elem())
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
g.initializer = value
|
||||
}
|
||||
return &GlobalValue{g}, nil
|
||||
default:
|
||||
if local, ok := locals[value]; ok {
|
||||
return local, nil
|
||||
} else {
|
||||
return nil, errors.New("todo: init: unknown value: " + value.String())
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (p *Program) getZeroValue(t types.Type) (Value, error) {
|
||||
switch typ := t.Underlying().(type) {
|
||||
case *types.Array:
|
||||
elems := make([]Value, typ.Len())
|
||||
for i := range elems {
|
||||
elem, err := p.getZeroValue(typ.Elem())
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
elems[i] = elem
|
||||
}
|
||||
return &ArrayValue{typ.Elem(), elems}, nil
|
||||
case *types.Basic:
|
||||
return &ZeroBasicValue{typ}, nil
|
||||
case *types.Signature:
|
||||
return &FunctionValue{typ, nil}, nil
|
||||
case *types.Map:
|
||||
return &MapValue{typ, nil, nil}, nil
|
||||
case *types.Pointer:
|
||||
return &PointerValue{typ, nil}, nil
|
||||
case *types.Struct:
|
||||
elems := make([]Value, typ.NumFields())
|
||||
for i := range elems {
|
||||
elem, err := p.getZeroValue(typ.Field(i).Type())
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
elems[i] = elem
|
||||
}
|
||||
return &StructValue{t, elems}, nil
|
||||
case *types.Slice:
|
||||
return &SliceValue{typ, nil}, nil
|
||||
default:
|
||||
return nil, errors.New("todo: init: unknown global type: " + typ.String())
|
||||
}
|
||||
}
|
||||
|
||||
// Boxed value for interpreter.
|
||||
type Value interface {
|
||||
}
|
||||
|
||||
type ConstValue struct {
|
||||
Expr *ssa.Const
|
||||
}
|
||||
|
||||
type ZeroBasicValue struct {
|
||||
Type *types.Basic
|
||||
}
|
||||
|
||||
type PointerValue struct {
|
||||
Type types.Type
|
||||
Elem *Value
|
||||
}
|
||||
|
||||
type FunctionValue struct {
|
||||
Type types.Type
|
||||
Elem *ssa.Function
|
||||
}
|
||||
|
||||
type PointerBitCastValue struct {
|
||||
Type types.Type
|
||||
Elem Value
|
||||
}
|
||||
|
||||
type PointerToUintptrValue struct {
|
||||
Elem Value
|
||||
}
|
||||
|
||||
type GlobalValue struct {
|
||||
Global *Global
|
||||
}
|
||||
|
||||
type ArrayValue struct {
|
||||
ElemType types.Type
|
||||
Elems []Value
|
||||
}
|
||||
|
||||
type StructValue struct {
|
||||
Type types.Type // types.Struct or types.Named
|
||||
Fields []Value
|
||||
}
|
||||
|
||||
type SliceValue struct {
|
||||
Type *types.Slice
|
||||
Array *ArrayValue
|
||||
}
|
||||
|
||||
type MapValue struct {
|
||||
Type *types.Map
|
||||
Keys []Value
|
||||
Values []Value
|
||||
}
|
||||
@@ -2,13 +2,14 @@ package ir
|
||||
|
||||
import (
|
||||
"go/ast"
|
||||
"go/token"
|
||||
"go/types"
|
||||
"sort"
|
||||
"strings"
|
||||
|
||||
"github.com/tinygo-org/tinygo/loader"
|
||||
"github.com/aykevl/go-llvm"
|
||||
"github.com/aykevl/tinygo/loader"
|
||||
"golang.org/x/tools/go/ssa"
|
||||
"tinygo.org/x/go-llvm"
|
||||
)
|
||||
|
||||
// This file provides a wrapper around go/ssa values and adds extra
|
||||
@@ -17,24 +18,54 @@ import (
|
||||
// View on all functions, types, and globals in a program, with analysis
|
||||
// results.
|
||||
type Program struct {
|
||||
Program *ssa.Program
|
||||
LoaderProgram *loader.Program
|
||||
mainPkg *ssa.Package
|
||||
Functions []*Function
|
||||
functionMap map[*ssa.Function]*Function
|
||||
Program *ssa.Program
|
||||
LoaderProgram *loader.Program
|
||||
mainPkg *ssa.Package
|
||||
Functions []*Function
|
||||
functionMap map[*ssa.Function]*Function
|
||||
Globals []*Global
|
||||
globalMap map[*ssa.Global]*Global
|
||||
comments map[string]*ast.CommentGroup
|
||||
NamedTypes []*NamedType
|
||||
needsScheduler bool
|
||||
goCalls []*ssa.Go
|
||||
}
|
||||
|
||||
// Function or method.
|
||||
type Function struct {
|
||||
*ssa.Function
|
||||
LLVMFn llvm.Value
|
||||
module string // go:wasm-module
|
||||
linkName string // go:linkname, go:export, go:interrupt
|
||||
exported bool // go:export
|
||||
nobounds bool // go:nobounds
|
||||
flag bool // used by dead code elimination
|
||||
interrupt bool // go:interrupt
|
||||
inline InlineType // go:inline
|
||||
linkName string // go:linkname, go:export, go:interrupt
|
||||
exported bool // go:export
|
||||
nobounds bool // go:nobounds
|
||||
blocking bool // calculated by AnalyseBlockingRecursive
|
||||
flag bool // used by dead code elimination
|
||||
interrupt bool // go:interrupt
|
||||
parents []*Function // calculated by AnalyseCallgraph
|
||||
children []*Function // calculated by AnalyseCallgraph
|
||||
}
|
||||
|
||||
// Global variable, possibly constant.
|
||||
type Global struct {
|
||||
*ssa.Global
|
||||
program *Program
|
||||
LLVMGlobal llvm.Value
|
||||
linkName string // go:extern
|
||||
extern bool // go:extern
|
||||
initializer Value
|
||||
}
|
||||
|
||||
// Type with a name and possibly methods.
|
||||
type NamedType struct {
|
||||
*ssa.Type
|
||||
LLVMType llvm.Type
|
||||
}
|
||||
|
||||
// Type that is at some point put in an interface.
|
||||
type TypeWithMethods struct {
|
||||
t types.Type
|
||||
Num int
|
||||
Methods map[string]*types.Selection
|
||||
}
|
||||
|
||||
// Interface type that is at some point used in a type assert (to check whether
|
||||
@@ -44,27 +75,37 @@ type Interface struct {
|
||||
Type *types.Interface
|
||||
}
|
||||
|
||||
type InlineType int
|
||||
|
||||
// How much to inline.
|
||||
const (
|
||||
// Default behavior. The compiler decides for itself whether any given
|
||||
// function will be inlined. Whether any function is inlined depends on the
|
||||
// optimization level.
|
||||
InlineDefault InlineType = iota
|
||||
|
||||
// Inline hint, just like the C inline keyword (signalled using
|
||||
// //go:inline). The compiler will be more likely to inline this function,
|
||||
// but it is not a guarantee.
|
||||
InlineHint
|
||||
|
||||
// Don't inline, just like the GCC noinline attribute. Signalled using
|
||||
// //go:noinline.
|
||||
InlineNone
|
||||
)
|
||||
|
||||
// Create and initialize a new *Program from a *ssa.Program.
|
||||
// Create and intialize a new *Program from a *ssa.Program.
|
||||
func NewProgram(lprogram *loader.Program, mainPath string) *Program {
|
||||
comments := map[string]*ast.CommentGroup{}
|
||||
for _, pkgInfo := range lprogram.Sorted() {
|
||||
for _, file := range pkgInfo.Files {
|
||||
for _, decl := range file.Decls {
|
||||
switch decl := decl.(type) {
|
||||
case *ast.GenDecl:
|
||||
switch decl.Tok {
|
||||
case token.TYPE, token.VAR:
|
||||
if len(decl.Specs) != 1 {
|
||||
continue
|
||||
}
|
||||
for _, spec := range decl.Specs {
|
||||
switch spec := spec.(type) {
|
||||
case *ast.TypeSpec: // decl.Tok == token.TYPE
|
||||
id := pkgInfo.Pkg.Path() + "." + spec.Name.Name
|
||||
comments[id] = decl.Doc
|
||||
case *ast.ValueSpec: // decl.Tok == token.VAR
|
||||
for _, name := range spec.Names {
|
||||
id := pkgInfo.Pkg.Path() + "." + name.Name
|
||||
comments[id] = decl.Doc
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
program := lprogram.LoadSSA()
|
||||
program.Build()
|
||||
|
||||
@@ -136,6 +177,8 @@ func NewProgram(lprogram *loader.Program, mainPath string) *Program {
|
||||
LoaderProgram: lprogram,
|
||||
mainPkg: mainPkg,
|
||||
functionMap: make(map[*ssa.Function]*Function),
|
||||
globalMap: make(map[*ssa.Global]*Global),
|
||||
comments: comments,
|
||||
}
|
||||
|
||||
for _, pkg := range packageList {
|
||||
@@ -150,6 +193,9 @@ func NewProgram(lprogram *loader.Program, mainPath string) *Program {
|
||||
func (p *Program) AddPackage(pkg *ssa.Package) {
|
||||
memberNames := make([]string, 0)
|
||||
for name := range pkg.Members {
|
||||
if isCGoInternal(name) {
|
||||
continue
|
||||
}
|
||||
memberNames = append(memberNames, name)
|
||||
}
|
||||
sort.Strings(memberNames)
|
||||
@@ -158,8 +204,13 @@ func (p *Program) AddPackage(pkg *ssa.Package) {
|
||||
member := pkg.Members[name]
|
||||
switch member := member.(type) {
|
||||
case *ssa.Function:
|
||||
if isCGoInternal(member.Name()) {
|
||||
continue
|
||||
}
|
||||
p.addFunction(member)
|
||||
case *ssa.Type:
|
||||
t := &NamedType{Type: member}
|
||||
p.NamedTypes = append(p.NamedTypes, t)
|
||||
methods := getAllMethods(pkg.Prog, member.Type())
|
||||
if !types.IsInterface(member.Type()) {
|
||||
// named type
|
||||
@@ -168,7 +219,13 @@ func (p *Program) AddPackage(pkg *ssa.Package) {
|
||||
}
|
||||
}
|
||||
case *ssa.Global:
|
||||
// Ignore. Globals are not handled here.
|
||||
g := &Global{program: p, Global: member}
|
||||
doc := p.comments[g.RelString(nil)]
|
||||
if doc != nil {
|
||||
g.parsePragmas(doc)
|
||||
}
|
||||
p.Globals = append(p.Globals, g)
|
||||
p.globalMap[member] = g
|
||||
case *ssa.NamedConst:
|
||||
// Ignore: these are already resolved.
|
||||
default:
|
||||
@@ -178,9 +235,6 @@ func (p *Program) AddPackage(pkg *ssa.Package) {
|
||||
}
|
||||
|
||||
func (p *Program) addFunction(ssaFn *ssa.Function) {
|
||||
if _, ok := p.functionMap[ssaFn]; ok {
|
||||
return
|
||||
}
|
||||
f := &Function{Function: ssaFn}
|
||||
f.parsePragmas()
|
||||
p.Functions = append(p.Functions, f)
|
||||
@@ -205,6 +259,10 @@ func (p *Program) GetFunction(ssaFn *ssa.Function) *Function {
|
||||
return p.functionMap[ssaFn]
|
||||
}
|
||||
|
||||
func (p *Program) GetGlobal(ssaGlobal *ssa.Global) *Global {
|
||||
return p.globalMap[ssaGlobal]
|
||||
}
|
||||
|
||||
func (p *Program) MainPkg() *ssa.Package {
|
||||
return p.mainPkg
|
||||
}
|
||||
@@ -216,16 +274,10 @@ func (f *Function) parsePragmas() {
|
||||
}
|
||||
if decl, ok := f.Syntax().(*ast.FuncDecl); ok && decl.Doc != nil {
|
||||
for _, comment := range decl.Doc.List {
|
||||
text := comment.Text
|
||||
if strings.HasPrefix(text, "//export ") {
|
||||
// Rewrite '//export' to '//go:export' for compatibility with
|
||||
// gc.
|
||||
text = "//go:" + text[2:]
|
||||
}
|
||||
if !strings.HasPrefix(text, "//go:") {
|
||||
if !strings.HasPrefix(comment.Text, "//go:") {
|
||||
continue
|
||||
}
|
||||
parts := strings.Fields(text)
|
||||
parts := strings.Fields(comment.Text)
|
||||
switch parts[0] {
|
||||
case "//go:export":
|
||||
if len(parts) != 2 {
|
||||
@@ -233,16 +285,6 @@ func (f *Function) parsePragmas() {
|
||||
}
|
||||
f.linkName = parts[1]
|
||||
f.exported = true
|
||||
case "//go:wasm-module":
|
||||
// Alternative comment for setting the import module.
|
||||
if len(parts) != 2 {
|
||||
continue
|
||||
}
|
||||
f.module = parts[1]
|
||||
case "//go:inline":
|
||||
f.inline = InlineHint
|
||||
case "//go:noinline":
|
||||
f.inline = InlineNone
|
||||
case "//go:interrupt":
|
||||
if len(parts) != 2 {
|
||||
continue
|
||||
@@ -285,7 +327,7 @@ func (f *Function) IsNoBounds() bool {
|
||||
|
||||
// Return true iff this function is externally visible.
|
||||
func (f *Function) IsExported() bool {
|
||||
return f.exported || f.CName() != ""
|
||||
return f.exported
|
||||
}
|
||||
|
||||
// Return true for functions annotated with //go:interrupt. The function name is
|
||||
@@ -293,17 +335,7 @@ func (f *Function) IsExported() bool {
|
||||
//
|
||||
// On some platforms (like AVR), interrupts need a special compiler flag.
|
||||
func (f *Function) IsInterrupt() bool {
|
||||
return f.interrupt
|
||||
}
|
||||
|
||||
// Return the inline directive of this function.
|
||||
func (f *Function) Inline() InlineType {
|
||||
return f.inline
|
||||
}
|
||||
|
||||
// Return the module name if not the default.
|
||||
func (f *Function) Module() string {
|
||||
return f.module
|
||||
return f.exported
|
||||
}
|
||||
|
||||
// Return the link name for this function.
|
||||
@@ -340,6 +372,74 @@ func (f *Function) CName() string {
|
||||
return ""
|
||||
}
|
||||
|
||||
// Parse //go: pragma comments from the source.
|
||||
func (g *Global) parsePragmas(doc *ast.CommentGroup) {
|
||||
for _, comment := range doc.List {
|
||||
if !strings.HasPrefix(comment.Text, "//go:") {
|
||||
continue
|
||||
}
|
||||
parts := strings.Fields(comment.Text)
|
||||
switch parts[0] {
|
||||
case "//go:extern":
|
||||
g.extern = true
|
||||
if len(parts) == 2 {
|
||||
g.linkName = parts[1]
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Return the link name for this global.
|
||||
func (g *Global) LinkName() string {
|
||||
if g.linkName != "" {
|
||||
return g.linkName
|
||||
}
|
||||
return g.RelString(nil)
|
||||
}
|
||||
|
||||
func (g *Global) IsExtern() bool {
|
||||
return g.extern
|
||||
}
|
||||
|
||||
func (g *Global) Initializer() Value {
|
||||
return g.initializer
|
||||
}
|
||||
|
||||
// Return true if this named type is annotated with the //go:volatile pragma,
|
||||
// for volatile loads and stores.
|
||||
func (p *Program) IsVolatile(t types.Type) bool {
|
||||
if t, ok := t.(*types.Named); !ok {
|
||||
return false
|
||||
} else {
|
||||
if t.Obj().Pkg() == nil {
|
||||
return false
|
||||
}
|
||||
id := t.Obj().Pkg().Path() + "." + t.Obj().Name()
|
||||
doc := p.comments[id]
|
||||
if doc == nil {
|
||||
return false
|
||||
}
|
||||
for _, line := range doc.List {
|
||||
if strings.TrimSpace(line.Text) == "//go:volatile" {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
}
|
||||
|
||||
// Return true if this is a CGo-internal function that can be ignored.
|
||||
func isCGoInternal(name string) bool {
|
||||
if strings.HasPrefix(name, "_Cgo_") || strings.HasPrefix(name, "_cgo") {
|
||||
// _Cgo_ptr, _Cgo_use, _cgoCheckResult, _cgo_runtime_cgocall
|
||||
return true // CGo-internal functions
|
||||
}
|
||||
if strings.HasPrefix(name, "__cgofn__cgo_") {
|
||||
return true // CGo function pointer in global scope
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
// Get all methods of a type.
|
||||
func getAllMethods(prog *ssa.Program, typ types.Type) []*types.Selection {
|
||||
ms := prog.MethodSets.MethodSet(typ)
|
||||
|
||||
+125
-4
@@ -56,6 +56,110 @@ func signature(sig *types.Signature) string {
|
||||
return s
|
||||
}
|
||||
|
||||
// Fill in parents of all functions.
|
||||
//
|
||||
// All packages need to be added before this pass can run, or it will produce
|
||||
// incorrect results.
|
||||
func (p *Program) AnalyseCallgraph() {
|
||||
for _, f := range p.Functions {
|
||||
// Clear, if AnalyseCallgraph has been called before.
|
||||
f.children = nil
|
||||
f.parents = nil
|
||||
|
||||
for _, block := range f.Blocks {
|
||||
for _, instr := range block.Instrs {
|
||||
switch instr := instr.(type) {
|
||||
case *ssa.Call:
|
||||
if instr.Common().IsInvoke() {
|
||||
continue
|
||||
}
|
||||
switch call := instr.Call.Value.(type) {
|
||||
case *ssa.Builtin:
|
||||
// ignore
|
||||
case *ssa.Function:
|
||||
if isCGoInternal(call.Name()) {
|
||||
continue
|
||||
}
|
||||
child := p.GetFunction(call)
|
||||
if child.CName() != "" {
|
||||
continue // assume non-blocking
|
||||
}
|
||||
if child.RelString(nil) == "time.Sleep" {
|
||||
f.blocking = true
|
||||
}
|
||||
f.children = append(f.children, child)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
for _, f := range p.Functions {
|
||||
for _, child := range f.children {
|
||||
child.parents = append(child.parents, f)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Analyse which functions are recursively blocking.
|
||||
//
|
||||
// Depends on AnalyseCallgraph.
|
||||
func (p *Program) AnalyseBlockingRecursive() {
|
||||
worklist := make([]*Function, 0)
|
||||
|
||||
// Fill worklist with directly blocking functions.
|
||||
for _, f := range p.Functions {
|
||||
if f.blocking {
|
||||
worklist = append(worklist, f)
|
||||
}
|
||||
}
|
||||
|
||||
// Keep reducing this worklist by marking a function as recursively blocking
|
||||
// from the worklist and pushing all its parents that are non-blocking.
|
||||
// This is somewhat similar to a worklist in a mark-sweep garbage collector.
|
||||
// The work items are then grey objects.
|
||||
for len(worklist) != 0 {
|
||||
// Pick the topmost.
|
||||
f := worklist[len(worklist)-1]
|
||||
worklist = worklist[:len(worklist)-1]
|
||||
for _, parent := range f.parents {
|
||||
if !parent.blocking {
|
||||
parent.blocking = true
|
||||
worklist = append(worklist, parent)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Check whether we need a scheduler. A scheduler is only necessary when there
|
||||
// are go calls that start blocking functions (if they're not blocking, the go
|
||||
// function can be turned into a regular function call).
|
||||
//
|
||||
// Depends on AnalyseBlockingRecursive.
|
||||
func (p *Program) AnalyseGoCalls() {
|
||||
p.goCalls = nil
|
||||
for _, f := range p.Functions {
|
||||
for _, block := range f.Blocks {
|
||||
for _, instr := range block.Instrs {
|
||||
switch instr := instr.(type) {
|
||||
case *ssa.Go:
|
||||
p.goCalls = append(p.goCalls, instr)
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
for _, instr := range p.goCalls {
|
||||
switch instr := instr.Call.Value.(type) {
|
||||
case *ssa.Builtin:
|
||||
case *ssa.Function:
|
||||
if p.functionMap[instr].blocking {
|
||||
p.needsScheduler = true
|
||||
}
|
||||
default:
|
||||
panic("unknown go call function type")
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Simple pass that removes dead code. This pass makes later analysis passes
|
||||
// more useful.
|
||||
func (p *Program) SimpleDCE() {
|
||||
@@ -68,12 +172,11 @@ func (p *Program) SimpleDCE() {
|
||||
// functions.
|
||||
main := p.mainPkg.Members["main"].(*ssa.Function)
|
||||
runtimePkg := p.Program.ImportedPackage("runtime")
|
||||
mathPkg := p.Program.ImportedPackage("math")
|
||||
p.GetFunction(main).flag = true
|
||||
worklist := []*ssa.Function{main}
|
||||
for _, f := range p.Functions {
|
||||
if f.exported || f.Synthetic == "package initializer" || f.Pkg == runtimePkg || (f.Pkg == mathPkg && f.Pkg != nil) {
|
||||
if f.flag {
|
||||
if f.exported || f.Synthetic == "package initializer" || f.Pkg == runtimePkg {
|
||||
if f.flag || isCGoInternal(f.Name()) {
|
||||
continue
|
||||
}
|
||||
f.flag = true
|
||||
@@ -103,7 +206,7 @@ func (p *Program) SimpleDCE() {
|
||||
}
|
||||
}
|
||||
for _, operand := range instr.Operands(nil) {
|
||||
if operand == nil || *operand == nil {
|
||||
if operand == nil || *operand == nil || isCGoInternal((*operand).Name()) {
|
||||
continue
|
||||
}
|
||||
switch operand := (*operand).(type) {
|
||||
@@ -136,3 +239,21 @@ func (p *Program) SimpleDCE() {
|
||||
}
|
||||
p.Functions = livefunctions
|
||||
}
|
||||
|
||||
// Whether this function needs a scheduler.
|
||||
//
|
||||
// Depends on AnalyseGoCalls.
|
||||
func (p *Program) NeedsScheduler() bool {
|
||||
return p.needsScheduler
|
||||
}
|
||||
|
||||
// Whether this function blocks. Builtins are also accepted for convenience.
|
||||
// They will always be non-blocking.
|
||||
//
|
||||
// Depends on AnalyseBlockingRecursive.
|
||||
func (p *Program) IsBlocking(f *Function) bool {
|
||||
if !p.needsScheduler {
|
||||
return false
|
||||
}
|
||||
return f.blocking
|
||||
}
|
||||
|
||||
+1
-1
Submodule lib/cmsis-svd updated: 7d9b416701...2ab163c2ae
+1
-1
Submodule lib/compiler-rt updated: 5bc79797e1...a4cbb02bca
+362
@@ -0,0 +1,362 @@
|
||||
package loader
|
||||
|
||||
// This file extracts the `import "C"` statement from the source and modifies
|
||||
// the AST for Cgo. It does not use libclang directly (see libclang.go).
|
||||
|
||||
import (
|
||||
"go/ast"
|
||||
"go/token"
|
||||
"sort"
|
||||
"strconv"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// fileInfo holds all Cgo-related information of a given *ast.File.
|
||||
type fileInfo struct {
|
||||
*ast.File
|
||||
filename string
|
||||
functions []*functionInfo
|
||||
typedefs []*typedefInfo
|
||||
importCPos token.Pos
|
||||
}
|
||||
|
||||
// functionInfo stores some information about a Cgo function found by libclang
|
||||
// and declared in the AST.
|
||||
type functionInfo struct {
|
||||
name string
|
||||
args []paramInfo
|
||||
result string
|
||||
}
|
||||
|
||||
// paramInfo is a parameter of a Cgo function (see functionInfo).
|
||||
type paramInfo struct {
|
||||
name string
|
||||
typeName string
|
||||
}
|
||||
|
||||
// typedefInfo contains information about a single typedef in C.
|
||||
type typedefInfo struct {
|
||||
newName string // newly defined type name
|
||||
oldName string // old type name, may be something like "unsigned long long"
|
||||
size int // size in bytes
|
||||
}
|
||||
|
||||
// cgoAliases list type aliases between Go and C, for types that are equivalent
|
||||
// in both languages. See addTypeAliases.
|
||||
var cgoAliases = map[string]string{
|
||||
"C.int8_t": "int8",
|
||||
"C.int16_t": "int16",
|
||||
"C.int32_t": "int32",
|
||||
"C.int64_t": "int64",
|
||||
"C.uint8_t": "uint8",
|
||||
"C.uint16_t": "uint16",
|
||||
"C.uint32_t": "uint32",
|
||||
"C.uint64_t": "uint64",
|
||||
"C.uintptr_t": "uintptr",
|
||||
}
|
||||
|
||||
// cgoTypes lists some C types with ambiguous sizes that must be retrieved
|
||||
// somehow from C. This is done by adding some typedefs to get the size of each
|
||||
// type.
|
||||
const cgoTypes = `
|
||||
typedef signed char _Cgo_schar;
|
||||
typedef unsigned char _Cgo_uchar;
|
||||
typedef short _Cgo_short;
|
||||
typedef unsigned short _Cgo_ushort;
|
||||
typedef int _Cgo_int;
|
||||
typedef unsigned int _Cgo_uint;
|
||||
typedef long _Cgo_long;
|
||||
typedef unsigned long _Cgo_ulong;
|
||||
typedef long long _Cgo_longlong;
|
||||
typedef unsigned long long _Cgo_ulonglong;
|
||||
`
|
||||
|
||||
// processCgo extracts the `import "C"` statement from the AST, parses the
|
||||
// comment with libclang, and modifies the AST to use this information.
|
||||
func (p *Package) processCgo(filename string, f *ast.File, cflags []string) error {
|
||||
info := &fileInfo{
|
||||
File: f,
|
||||
filename: filename,
|
||||
}
|
||||
|
||||
// Find `import "C"` statements in the file.
|
||||
for i := 0; i < len(f.Decls); i++ {
|
||||
decl := f.Decls[i]
|
||||
genDecl, ok := decl.(*ast.GenDecl)
|
||||
if !ok {
|
||||
continue
|
||||
}
|
||||
if len(genDecl.Specs) != 1 {
|
||||
continue
|
||||
}
|
||||
spec, ok := genDecl.Specs[0].(*ast.ImportSpec)
|
||||
if !ok {
|
||||
continue
|
||||
}
|
||||
path, err := strconv.Unquote(spec.Path.Value)
|
||||
if err != nil {
|
||||
panic("could not parse import path: " + err.Error())
|
||||
}
|
||||
if path != "C" {
|
||||
continue
|
||||
}
|
||||
cgoComment := genDecl.Doc.Text()
|
||||
|
||||
// Stored for later use by generated functions, to use a somewhat sane
|
||||
// source location.
|
||||
info.importCPos = spec.Path.ValuePos
|
||||
|
||||
err = info.parseFragment(cgoComment+cgoTypes, cflags)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Remove this import declaration.
|
||||
f.Decls = append(f.Decls[:i], f.Decls[i+1:]...)
|
||||
i--
|
||||
}
|
||||
|
||||
// Print the AST, for debugging.
|
||||
//ast.Print(p.fset, f)
|
||||
|
||||
// Declare functions found by libclang.
|
||||
info.addFuncDecls()
|
||||
|
||||
// Forward C types to Go types (like C.uint32_t -> uint32).
|
||||
info.addTypeAliases()
|
||||
|
||||
// Add type declarations for C types, declared using typeef in C.
|
||||
info.addTypedefs()
|
||||
|
||||
// Patch the AST to use the declared types and functions.
|
||||
ast.Inspect(f, info.walker)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// addFuncDecls adds the C function declarations found by libclang in the
|
||||
// comment above the `import "C"` statement.
|
||||
func (info *fileInfo) addFuncDecls() {
|
||||
// TODO: replace all uses of importCPos with the real locations from
|
||||
// libclang.
|
||||
for _, fn := range info.functions {
|
||||
obj := &ast.Object{
|
||||
Kind: ast.Fun,
|
||||
Name: mapCgoType(fn.name),
|
||||
}
|
||||
args := make([]*ast.Field, len(fn.args))
|
||||
decl := &ast.FuncDecl{
|
||||
Name: &ast.Ident{
|
||||
NamePos: info.importCPos,
|
||||
Name: mapCgoType(fn.name),
|
||||
Obj: obj,
|
||||
},
|
||||
Type: &ast.FuncType{
|
||||
Func: info.importCPos,
|
||||
Params: &ast.FieldList{
|
||||
Opening: info.importCPos,
|
||||
List: args,
|
||||
Closing: info.importCPos,
|
||||
},
|
||||
Results: &ast.FieldList{
|
||||
List: []*ast.Field{
|
||||
&ast.Field{
|
||||
Type: &ast.Ident{
|
||||
NamePos: info.importCPos,
|
||||
Name: mapCgoType(fn.result),
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
},
|
||||
}
|
||||
obj.Decl = decl
|
||||
for i, arg := range fn.args {
|
||||
args[i] = &ast.Field{
|
||||
Names: []*ast.Ident{
|
||||
&ast.Ident{
|
||||
NamePos: info.importCPos,
|
||||
Name: arg.name,
|
||||
Obj: &ast.Object{
|
||||
Kind: ast.Var,
|
||||
Name: mapCgoType(arg.name),
|
||||
Decl: decl,
|
||||
},
|
||||
},
|
||||
},
|
||||
Type: &ast.Ident{
|
||||
NamePos: info.importCPos,
|
||||
Name: mapCgoType(arg.typeName),
|
||||
},
|
||||
}
|
||||
}
|
||||
info.Decls = append(info.Decls, decl)
|
||||
}
|
||||
}
|
||||
|
||||
// addTypeAliases aliases some built-in Go types with their equivalent C types.
|
||||
// It adds code like the following to the AST:
|
||||
//
|
||||
// type (
|
||||
// C.int8_t = int8
|
||||
// C.int16_t = int16
|
||||
// // ...
|
||||
// )
|
||||
func (info *fileInfo) addTypeAliases() {
|
||||
aliasKeys := make([]string, 0, len(cgoAliases))
|
||||
for key := range cgoAliases {
|
||||
aliasKeys = append(aliasKeys, key)
|
||||
}
|
||||
sort.Strings(aliasKeys)
|
||||
gen := &ast.GenDecl{
|
||||
TokPos: info.importCPos,
|
||||
Tok: token.TYPE,
|
||||
Lparen: info.importCPos,
|
||||
Rparen: info.importCPos,
|
||||
}
|
||||
for _, typeName := range aliasKeys {
|
||||
goTypeName := cgoAliases[typeName]
|
||||
obj := &ast.Object{
|
||||
Kind: ast.Typ,
|
||||
Name: typeName,
|
||||
}
|
||||
typeSpec := &ast.TypeSpec{
|
||||
Name: &ast.Ident{
|
||||
NamePos: info.importCPos,
|
||||
Name: typeName,
|
||||
Obj: obj,
|
||||
},
|
||||
Assign: info.importCPos,
|
||||
Type: &ast.Ident{
|
||||
NamePos: info.importCPos,
|
||||
Name: goTypeName,
|
||||
},
|
||||
}
|
||||
obj.Decl = typeSpec
|
||||
gen.Specs = append(gen.Specs, typeSpec)
|
||||
}
|
||||
info.Decls = append(info.Decls, gen)
|
||||
}
|
||||
|
||||
func (info *fileInfo) addTypedefs() {
|
||||
gen := &ast.GenDecl{
|
||||
TokPos: info.importCPos,
|
||||
Tok: token.TYPE,
|
||||
}
|
||||
for _, typedef := range info.typedefs {
|
||||
newType := mapCgoType(typedef.newName)
|
||||
oldType := mapCgoType(typedef.oldName)
|
||||
switch oldType {
|
||||
// TODO: plain char (may be signed or unsigned)
|
||||
case "C.schar", "C.short", "C.int", "C.long", "C.longlong":
|
||||
switch typedef.size {
|
||||
case 1:
|
||||
oldType = "int8"
|
||||
case 2:
|
||||
oldType = "int16"
|
||||
case 4:
|
||||
oldType = "int32"
|
||||
case 8:
|
||||
oldType = "int64"
|
||||
}
|
||||
case "C.uchar", "C.ushort", "C.uint", "C.ulong", "C.ulonglong":
|
||||
switch typedef.size {
|
||||
case 1:
|
||||
oldType = "uint8"
|
||||
case 2:
|
||||
oldType = "uint16"
|
||||
case 4:
|
||||
oldType = "uint32"
|
||||
case 8:
|
||||
oldType = "uint64"
|
||||
}
|
||||
}
|
||||
if strings.HasPrefix(newType, "C._Cgo_") {
|
||||
newType = "C." + newType[len("C._Cgo_"):]
|
||||
}
|
||||
if _, ok := cgoAliases[newType]; ok {
|
||||
// This is a type that also exists in Go (defined in stdint.h).
|
||||
continue
|
||||
}
|
||||
obj := &ast.Object{
|
||||
Kind: ast.Typ,
|
||||
Name: newType,
|
||||
}
|
||||
typeSpec := &ast.TypeSpec{
|
||||
Name: &ast.Ident{
|
||||
NamePos: info.importCPos,
|
||||
Name: newType,
|
||||
Obj: obj,
|
||||
},
|
||||
Type: &ast.Ident{
|
||||
NamePos: info.importCPos,
|
||||
Name: oldType,
|
||||
},
|
||||
}
|
||||
obj.Decl = typeSpec
|
||||
gen.Specs = append(gen.Specs, typeSpec)
|
||||
}
|
||||
info.Decls = append(info.Decls, gen)
|
||||
}
|
||||
|
||||
// walker replaces all "C".<something> call expressions to literal
|
||||
// "C.<something>" expressions. This is impossible to write in Go (a dot cannot
|
||||
// be used in the middle of a name) so is used as a new namespace for C call
|
||||
// expressions.
|
||||
func (info *fileInfo) walker(node ast.Node) bool {
|
||||
switch node := node.(type) {
|
||||
case *ast.CallExpr:
|
||||
fun, ok := node.Fun.(*ast.SelectorExpr)
|
||||
if !ok {
|
||||
return true
|
||||
}
|
||||
x, ok := fun.X.(*ast.Ident)
|
||||
if !ok {
|
||||
return true
|
||||
}
|
||||
if x.Name == "C" {
|
||||
node.Fun = &ast.Ident{
|
||||
NamePos: x.NamePos,
|
||||
Name: mapCgoType(fun.Sel.Name),
|
||||
}
|
||||
}
|
||||
case *ast.ValueSpec:
|
||||
typ, ok := node.Type.(*ast.SelectorExpr)
|
||||
if !ok {
|
||||
return true
|
||||
}
|
||||
x, ok := typ.X.(*ast.Ident)
|
||||
if !ok {
|
||||
return true
|
||||
}
|
||||
if x.Name == "C" {
|
||||
node.Type = &ast.Ident{
|
||||
NamePos: x.NamePos,
|
||||
Name: mapCgoType(typ.Sel.Name),
|
||||
}
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// mapCgoType converts a C type name into a Go type name with a "C." prefix.
|
||||
func mapCgoType(t string) string {
|
||||
switch t {
|
||||
case "signed char":
|
||||
return "C.schar"
|
||||
case "long long":
|
||||
return "C.longlong"
|
||||
case "unsigned char":
|
||||
return "C.schar"
|
||||
case "unsigned short":
|
||||
return "C.ushort"
|
||||
case "unsigned int":
|
||||
return "C.uint"
|
||||
case "unsigned long":
|
||||
return "C.ulong"
|
||||
case "unsigned long long":
|
||||
return "C.ulonglong"
|
||||
default:
|
||||
return "C." + t
|
||||
}
|
||||
}
|
||||
+5
-17
@@ -1,10 +1,5 @@
|
||||
package loader
|
||||
|
||||
import (
|
||||
"go/token"
|
||||
"strings"
|
||||
)
|
||||
|
||||
// Errors contains a list of parser errors or a list of typechecker errors for
|
||||
// the given package.
|
||||
type Errors struct {
|
||||
@@ -20,20 +15,13 @@ func (e Errors) Error() string {
|
||||
// packages is a list from the root package to the leaf package that imports one
|
||||
// of the packages in the list.
|
||||
type ImportCycleError struct {
|
||||
Packages []string
|
||||
ImportPositions []token.Position
|
||||
Packages []string
|
||||
}
|
||||
|
||||
func (e *ImportCycleError) Error() string {
|
||||
var msg strings.Builder
|
||||
msg.WriteString("import cycle:\n\t")
|
||||
msg.WriteString(strings.Join(e.Packages, "\n\t"))
|
||||
msg.WriteString("\n at ")
|
||||
for i, pos := range e.ImportPositions {
|
||||
if i > 0 {
|
||||
msg.WriteString(", ")
|
||||
}
|
||||
msg.WriteString(pos.String())
|
||||
msg := "import cycle: " + e.Packages[0]
|
||||
for _, path := range e.Packages[1:] {
|
||||
msg += " → " + path
|
||||
}
|
||||
return msg.String()
|
||||
return msg
|
||||
}
|
||||
|
||||
Some files were not shown because too many files have changed in this diff Show More
Reference in New Issue
Block a user