ci: test newly supported packages

In https://github.com/tinygo-org/tinygo-site/pull/423 I see that there
are a lot of newly supported packages. This PR adds testing for them, so
that we won't regress.

.circleci/config.yml

@@ -104,10 +104,12 @@ jobs:
     steps:
       - test-linux:
           llvm: "15"
+          # "make lint" fails before go 1.21 because internal/tools/go.mod specifies packages that require go 1.21
+          fmt-check: false
     resource_class: large
-  test-llvm18-go122:
+  test-llvm18-go123:
     docker:
-      - image: golang:1.22-bullseye
+      - image: golang:1.23-bullseye
     steps:
       - test-linux:
           llvm: "18"
@@ -120,4 +122,4 @@ workflows:
       # least the smoke tests still pass.
       - test-llvm15-go119
       # This tests LLVM 18 support when linking against system libraries.
-      - test-llvm18-go122
+      - test-llvm18-go123

.github/workflows/build-macos.yml

@@ -37,7 +37,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.22'
+          go-version: '1.23'
           cache: true
       - name: Restore LLVM source cache
         uses: actions/cache/restore@v4
@@ -145,7 +145,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.22'
+          go-version: '1.23'
           cache: true
       - name: Build TinyGo (LLVM ${{ matrix.version }})
         run: go install -tags=llvm${{ matrix.version }}

.github/workflows/linux.yml

@@ -18,7 +18,7 @@ jobs:
     # statically linked binary.
     runs-on: ubuntu-latest
     container:
-      image: golang:1.22-alpine
+      image: golang:1.23-alpine
     steps:
       - name: Install apk dependencies
         # tar: needed for actions/cache@v4
@@ -115,6 +115,8 @@ jobs:
           gem install --no-document fpm
       - name: Run linter
         run: make lint
+      - name: Run spellcheck
+        run: make spell
       - name: Build TinyGo release
         run: |
           make release deb -j3 STATIC=1
@@ -139,7 +141,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.22'
+          go-version: '1.23'
           cache: true
       - name: Install wasmtime
         uses: bytecodealliance/actions/wasmtime/setup@v1
@@ -182,7 +184,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.22'
+          go-version: '1.23'
           cache: true
       - name: Install Node.js
         uses: actions/setup-node@v4
@@ -305,7 +307,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.22'
+          go-version: '1.23'
           cache: true
       - name: Restore LLVM source cache
         uses: actions/cache/restore@v4

.github/workflows/sizediff-install-pkgs.sh

@@ -2,7 +2,7 @@
 # still works after checking out the dev branch (that is, when going from LLVM
 # 16 to LLVM 17 for example, both Clang 16 and Clang 17 are installed).
 
-echo 'deb https://apt.llvm.org/jammy/ llvm-toolchain-jammy-18 main' | sudo tee /etc/apt/sources.list.d/llvm.list
+echo 'deb https://apt.llvm.org/noble/ llvm-toolchain-noble-18 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 --no-install-recommends -y \

.github/workflows/sizediff.yml

@@ -9,6 +9,8 @@ concurrency:
 
 jobs:
   sizediff:
+    # Note: when updating the Ubuntu version, also update the Ubuntu version in
+    # sizediff-install-pkgs.sh
     runs-on: ubuntu-24.04
     permissions:
       pull-requests: write

.github/workflows/windows.yml

@@ -35,7 +35,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.22'
+          go-version: '1.23'
           cache: true
       - name: Restore cached LLVM source
         uses: actions/cache/restore@v4
@@ -143,7 +143,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.22'
+          go-version: '1.23'
           cache: true
       - name: Download TinyGo build
         uses: actions/download-artifact@v4
@@ -173,7 +173,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.22'
+          go-version: '1.23'
           cache: true
       - name: Download TinyGo build
         uses: actions/download-artifact@v4
@@ -209,7 +209,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.22'
+          go-version: '1.23'
           cache: true
       - name: Download TinyGo build
         uses: actions/download-artifact@v4

.gitignore

@@ -20,6 +20,8 @@ src/device/stm32/*.go
 src/device/stm32/*.s
 src/device/kendryte/*.go
 src/device/kendryte/*.s
+src/device/renesas/*.go
+src/device/renesas/*.s
 src/device/rp/*.go
 src/device/rp/*.s
 ./vendor

.gitmodules

@@ -32,9 +32,6 @@
 [submodule "lib/macos-minimal-sdk"]
 	path = lib/macos-minimal-sdk
 	url = https://github.com/aykevl/macos-minimal-sdk.git
-[submodule "lib/renesas-svd"]
-	path = lib/renesas-svd
-	url = https://github.com/tinygo-org/renesas-svd.git
 [submodule "src/net"]
 	path = src/net
 	url = https://github.com/tinygo-org/net.git

BUILDING.md

@@ -28,6 +28,21 @@ build tools to be built. Go is of course necessary to build TinyGo itself.
 The rest of this guide assumes you're running Linux, but it should be equivalent
 on a different system like Mac.
 
+## Using GNU Make
+
+The static build of TinyGo is driven by GNUmakefile, which provides a help target for quick reference:
+
+    % make help
+    clean                           Remove build directory
+    fmt                             Reformat source
+    fmt-check                       Warn if any source needs reformatting
+    gen-device                      Generate microcontroller-specific sources
+    llvm-source                     Get LLVM sources
+    llvm-build                      Build LLVM
+    tinygo                          Build the TinyGo compiler
+    lint                            Lint source tree
+    spell                           Spellcheck source tree
+
 ## Download the source
 
 The first step is to download the TinyGo sources (use `--recursive` if you clone

CHANGELOG.md

@@ -1,3 +1,63 @@
+0.33.0
+---
+
+* **general**
+  - use latest version of x/tools
+  - add chromeos 9p support for flashing
+  - sort compiler error messages by source position in a package
+  - don't include prebuilt libraries in the release to simplify packaging and reduce the release tarball size
+  - show runtime panic addresses for `tinygo run`
+  - support Go 1.23 (including all new language features)
+  - `test`: support GOOS/GOARCH pairs in the `-target` flag
+  - `test`: remove message after test binary built
+* **compiler**
+  - remove unused registers for x86_64 linux syscalls
+  - remove old atomics workaround for AVR (not necessary in modern LLVM versions)
+  - support `golang.org/x/sys/unix` syscalls
+  - `builder`: remove workaround for generics race condition
+  - `builder`: add package ID to compiler and optimization error messages
+  - `builder`: show better error messages for some common linker errors
+  - `cgo`: support preprocessor macros passed on the command line
+  - `cgo`: use absolute paths for error messages
+  - `cgo`: add support for printf
+  - `loader`: handle `go list` errors inside TinyGo (for better error messages)
+  - `transform`: fix incorrect alignment of heap-to-stack transform
+  - `transform`: use thinlto-pre-link passes (instead of the full pipeline) to speed up compilation speed slightly
+* **standard library**
+  - `crypto/tls`: add CipherSuiteName and some extra fields to ConnectionSTate
+  - `internal/abi`: implement initial version of this package
+  - `machine`: use new `internal/binary` package
+  - `machine`: rewrite Reply() to fix sending long replies in I2C Target Mode
+  - `machine/usb/descriptor`: Reset joystick physical
+  - `machine/usb/descriptor`: Drop second joystick hat
+  - `machine/usb/descriptor`: Add more HID... functions
+  - `machine/usb/descriptor`: Fix encoding of values
+  - `machine/usb/hid/joystick`: Allow more hat switches
+  - `os`: add `Chown`, `Truncate`
+  - `os/user`: use stdlib version of this package
+  - `reflect`: return correct name for the `unsafe.Pointer` type
+  - `reflect`: implement `Type.Overflow*` functions
+  - `runtime`: implement dummy `getAuxv` to satisfy golang.org/x/sys/
+  - `runtime`: don't zero out new allocations for `-gc=leaking` when they are already zeroed
+  - `runtime`: simplify slice growing/appending code
+  - `runtime`: print a message when a fatal signal like SIGSEGV happens
+  - `runtime/debug`: add `GoVersion` to `debug.BuildInfo`
+  - `sync`: add `Map.Clear()`
+  - `sync/atomic`: add And* and Or* compiler intrinsics needed for Go 1.23
+  - `syscall`: add `Fork` and `Execve`
+  - `syscall`: add all MacOS errno values
+  - `testing`: stub out `T.Deadline`
+  - `unique`: implement custom (naive) version of the unique package
+* **targets**
+  - `arm`: support `GOARM=*,softfloat` (softfloat support for ARM v5, v6, and v7)
+  - `mips`: add linux/mipsle (and experimental linux/mips) support
+  - `mips`: add `GOMIPS=softfloat` support
+  - `wasip2`: add WASI preview 2 support
+  - `wasm/js`: add `node:` prefix in `require()` call of wasm_exec.js
+  - `wasm-unknown`: make sure the `os` package can be imported
+  - `wasm-unknown`: remove import-memory flag
+
+
 0.32.0
 ---
 
@@ -18,7 +78,7 @@
   - `builder`: keep un-wasm-opt'd .wasm if -work was passed
   - `builder`: make sure wasm-opt command line is printed if asked
   - `cgo`: implement shift operations in preprocessor macros
-  - `interp`: checking for methodset existance
+  - `interp`: checking for methodset existence
 
 * **standard library**
   - `machine`: add `__tinygo_spi_tx` function to simulator
@@ -217,7 +277,7 @@
   - `reflect`: add SetZero
   - `reflect`: fix iterating over maps with interface{} keys
   - `reflect`: implement Value.Grow
-  - `reflect`: remove unecessary heap allocations
+  - `reflect`: remove unnecessary heap allocations
   - `reflect`: use .key() instead of a type assert
   - `sync`: add implementation from upstream Go for OnceFunc, OnceValue, and OnceValues
 * **targets**
@@ -1896,7 +1956,7 @@
   - 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
+  - allow pointers in map keys
   - support non-constant syscall numbers
   - implement non-blocking selects
   - add support for the `-tags` flag

Dockerfile

@@ -1,5 +1,5 @@
 # tinygo-llvm stage obtains the llvm source for TinyGo
-FROM golang:1.22 AS tinygo-llvm
+FROM golang:1.23 AS tinygo-llvm
 
 RUN apt-get update && \
     apt-get install -y apt-utils make cmake clang-15 ninja-build && \
@@ -33,7 +33,7 @@ RUN cd /tinygo/ && \
 
 # tinygo-compiler copies the compiler build over to a base Go container (without
 # all the build tools etc).
-FROM golang:1.22 AS tinygo-compiler
+FROM golang:1.23 AS tinygo-compiler
 
 # Copy tinygo build.
 COPY --from=tinygo-compiler-build /tinygo/build/release/tinygo /tinygo

GNUmakefile

@@ -175,17 +175,17 @@ ifneq ("$(wildcard $(LLVM_BUILDDIR)/bin/llvm-config*)","")
     CGO_LDFLAGS+=-L$(abspath $(LLVM_BUILDDIR)/lib) -lclang $(CLANG_LIBS) $(LLD_LIBS) $(shell $(LLVM_CONFIG_PREFIX) $(LLVM_BUILDDIR)/bin/llvm-config --ldflags --libs --system-libs $(LLVM_COMPONENTS)) -lstdc++ $(CGO_LDFLAGS_EXTRA)
 endif
 
-clean:
+clean: ## Remove build directory
 	@rm -rf build
 
 FMT_PATHS = ./*.go builder cgo/*.go compiler interp loader src transform
-fmt:
+fmt: ## Reformat source
 	@gofmt -l -w $(FMT_PATHS)
-fmt-check:
+fmt-check: ## Warn if any source needs reformatting
 	@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-esp gen-device-nrf gen-device-sam gen-device-sifive gen-device-kendryte gen-device-nxp gen-device-rp
+gen-device: gen-device-avr gen-device-esp gen-device-nrf gen-device-sam gen-device-sifive gen-device-kendryte gen-device-nxp gen-device-rp gen-device-renesas ## Generate microcontroller-specific sources
 ifneq ($(STM32), 0)
 gen-device: gen-device-stm32
 endif
@@ -234,21 +234,19 @@ gen-device-rp: build/gen-device-svd
 	GO111MODULE=off $(GO) fmt ./src/device/rp
 
 gen-device-renesas: build/gen-device-svd
-	./build/gen-device-svd -source=https://github.com/tinygo-org/renesas-svd lib/renesas-svd/ src/device/renesas/
+	./build/gen-device-svd -source=https://github.com/cmsis-svd/cmsis-svd-data/tree/master/data/Renesas lib/cmsis-svd/data/Renesas/ src/device/renesas/
 	GO111MODULE=off $(GO) fmt ./src/device/renesas
 
-# Get LLVM sources.
 $(LLVM_PROJECTDIR)/llvm:
 	git clone -b tinygo_xtensa_release_18.1.2 --depth=1 https://github.com/tinygo-org/llvm-project $(LLVM_PROJECTDIR)
-llvm-source: $(LLVM_PROJECTDIR)/llvm
+llvm-source: $(LLVM_PROJECTDIR)/llvm ## Get LLVM sources
 
 # Configure LLVM.
 TINYGO_SOURCE_DIR=$(shell pwd)
 $(LLVM_BUILDDIR)/build.ninja:
 	mkdir -p $(LLVM_BUILDDIR) && cd $(LLVM_BUILDDIR) && cmake -G Ninja $(TINYGO_SOURCE_DIR)/$(LLVM_PROJECTDIR)/llvm "-DLLVM_TARGETS_TO_BUILD=X86;ARM;AArch64;AVR;Mips;RISCV;WebAssembly" "-DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD=Xtensa" -DCMAKE_BUILD_TYPE=Release -DLIBCLANG_BUILD_STATIC=ON -DLLVM_ENABLE_TERMINFO=OFF -DLLVM_ENABLE_ZLIB=OFF -DLLVM_ENABLE_ZSTD=OFF -DLLVM_ENABLE_LIBEDIT=OFF -DLLVM_ENABLE_Z3_SOLVER=OFF -DLLVM_ENABLE_OCAMLDOC=OFF -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_ENABLE_PROJECTS="clang;lld" -DLLVM_TOOL_CLANG_TOOLS_EXTRA_BUILD=OFF -DCLANG_ENABLE_STATIC_ANALYZER=OFF -DCLANG_ENABLE_ARCMT=OFF $(LLVM_OPTION)
 
-# Build LLVM.
-$(LLVM_BUILDDIR): $(LLVM_BUILDDIR)/build.ninja
+$(LLVM_BUILDDIR): $(LLVM_BUILDDIR)/build.ninja ## Build LLVM
 	cd $(LLVM_BUILDDIR) && ninja $(NINJA_BUILD_TARGETS)
 
 ifneq ($(USE_SYSTEM_BINARYEN),1)
@@ -269,7 +267,7 @@ lib/wasi-libc/sysroot/lib/wasm32-wasi/libc.a:
 	cd lib/wasi-libc && $(MAKE) -j4 EXTRA_CFLAGS="-O2 -g -DNDEBUG -mnontrapping-fptoint -msign-ext" MALLOC_IMPL=none CC="$(CLANG)" AR=$(LLVM_AR) NM=$(LLVM_NM)
 
 # Generate WASI syscall bindings
-WASM_TOOLS_MODULE=github.com/ydnar/wasm-tools-go
+WASM_TOOLS_MODULE=github.com/bytecodealliance/wasm-tools-go
 .PHONY: wasi-syscall
 wasi-syscall: wasi-cm
 	go run -modfile ./internal/wasm-tools/go.mod $(WASM_TOOLS_MODULE)/cmd/wit-bindgen-go generate --versioned -o ./src/internal -p internal --cm internal/cm ./lib/wasi-cli/wit
@@ -291,8 +289,7 @@ ifeq (, $(shell which node))
 endif
 	@if [ $(NODEJS_VERSION) -lt $(MIN_NODEJS_VERSION) ]; then echo "Install NodeJS version 18+ to run tests."; exit 1; fi
 
-# Build the Go compiler.
-tinygo:
+tinygo: ## Build the TinyGo compiler
 	@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)" $(GOENVFLAGS) $(GO) build -buildmode exe -o build/tinygo$(EXE) -tags "byollvm osusergo" -ldflags="-X github.com/tinygo-org/tinygo/goenv.GitSha1=`git rev-parse --short HEAD`" .
 test: wasi-libc check-nodejs-version
@@ -302,30 +299,39 @@ test: wasi-libc check-nodejs-version
 TEST_PACKAGES_SLOW = \
 	compress/bzip2 \
 	crypto/dsa \
+	crypto/ecdsa \
 	index/suffixarray \
 
 # Standard library packages that pass tests quickly on darwin, linux, wasi, and windows
 TEST_PACKAGES_FAST = \
+	cmp \
 	compress/lzw \
 	compress/zlib \
 	container/heap \
 	container/list \
 	container/ring \
 	crypto/des \
+	crypto/elliptic \
 	crypto/md5 \
 	crypto/rc4 \
 	crypto/sha1 \
 	crypto/sha256 \
 	crypto/sha512 \
+	database/sql/driver \
 	debug/macho \
+	embed \
 	embed/internal/embedtest \
 	encoding \
 	encoding/ascii85 \
+	encoding/asn1 \
 	encoding/base32 \
 	encoding/base64 \
 	encoding/csv \
 	encoding/hex \
+	go/ast \
+	go/format \
 	go/scanner \
+	go/version \
 	hash \
 	hash/adler32 \
 	hash/crc64 \
@@ -337,6 +343,7 @@ TEST_PACKAGES_FAST = \
 	math/cmplx \
 	net/http/internal/ascii \
 	net/mail \
+	net/textproto \
 	os \
 	path \
 	reflect \
@@ -347,6 +354,7 @@ TEST_PACKAGES_FAST = \
 	unicode \
 	unicode/utf16 \
 	unicode/utf8 \
+	unique \
 	$(nil)
 
 # Assume this will go away before Go2, so only check minor version.
@@ -359,30 +367,41 @@ endif
 # archive/zip requires os.ReadAt, which is not yet supported on windows
 # bytes requires mmap
 # compress/flate appears to hang on wasi
+# context requires recover(), which is not yet supported on wasi
+# crypto/aes requires recover(), which is not yet supported on wasi
 # crypto/hmac fails on wasi, it exits with a "slice out of range" panic
 # debug/plan9obj requires os.ReadAt, which is not yet supported on windows
-# image requires recover(), which is not  yet supported on wasi
+# go/build/constraint requires recover(), which is not yet supported on wasi
+# image requires recover(), which is not yet supported on wasi
 # io/ioutil requires os.ReadDir, which is not yet supported on windows or wasi
+# mime exits with "bufio.Scanner: Read returned impossible count" on wasi
+# mime/multipart has a nil pointer dereference (stack overflow?)
 # mime/quotedprintable requires syscall.Faccessat
+# regexp/syntax requires recover() which is not yet supported on wasi
 # strconv requires recover() which is not yet supported on wasi
-# text/tabwriter requries recover(), which is not  yet supported on wasi
+# text/tabwriter requires recover(), which is not yet supported on wasi
 # text/template/parse requires recover(), which is not yet supported on wasi
 # testing/fstest requires os.ReadDir, which is not yet supported on windows or wasi
 
 # Additional standard library packages that pass tests on individual platforms
 TEST_PACKAGES_LINUX := \
 	archive/zip \
-	bytes \
 	compress/flate \
+	context \
+	crypto/aes \
 	crypto/hmac \
 	debug/dwarf \
 	debug/plan9obj \
+	go/build/constraint \
 	image \
 	io/ioutil \
+	mime \
+	mime/multipart \
 	mime/quotedprintable \
 	net \
+	os/user \
+	regexp/syntax \
 	strconv \
-	testing/fstest \
 	text/tabwriter \
 	text/template/parse
 
@@ -390,7 +409,14 @@ TEST_PACKAGES_DARWIN := $(TEST_PACKAGES_LINUX)
 
 TEST_PACKAGES_WINDOWS := \
 	compress/flate \
+	context \
+	crypto/aes \
 	crypto/hmac \
+	go/build/constraint \
+	mime \
+	mime/multipart \
+	os/user \
+	regexp/syntax \
 	strconv \
 	text/template/parse \
 	$(nil)
@@ -644,6 +670,8 @@ endif
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=xiao                examples/blinky1
 	@$(MD5SUM) test.hex
+	$(TINYGO) build -size short -o test.hex -target=rak4631             examples/blinky1
+	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=circuitplay-express examples/dac
 	@$(MD5SUM) test.hex
 	$(TINYGO) build -size short -o test.hex -target=pyportal            examples/dac
@@ -856,6 +884,7 @@ build/release: tinygo gen-device wasi-libc $(if $(filter 1,$(USE_SYSTEM_BINARYEN
 	@mkdir -p build/release/tinygo/lib/CMSIS/CMSIS
 	@mkdir -p build/release/tinygo/lib/macos-minimal-sdk
 	@mkdir -p build/release/tinygo/lib/mingw-w64/mingw-w64-crt/lib-common
+	@mkdir -p build/release/tinygo/lib/mingw-w64/mingw-w64-crt/stdio
 	@mkdir -p build/release/tinygo/lib/mingw-w64/mingw-w64-headers/defaults
 	@mkdir -p build/release/tinygo/lib/musl/arch
 	@mkdir -p build/release/tinygo/lib/musl/crt
@@ -867,9 +896,6 @@ build/release: tinygo gen-device wasi-libc $(if $(filter 1,$(USE_SYSTEM_BINARYEN
 	@mkdir -p build/release/tinygo/lib/wasi-libc/libc-top-half/musl/arch
 	@mkdir -p build/release/tinygo/lib/wasi-libc/libc-top-half/musl/src
 	@mkdir -p build/release/tinygo/lib/wasi-cli/
-	@mkdir -p build/release/tinygo/pkg/thumbv6m-unknown-unknown-eabi-cortex-m0
-	@mkdir -p build/release/tinygo/pkg/thumbv6m-unknown-unknown-eabi-cortex-m0plus
-	@mkdir -p build/release/tinygo/pkg/thumbv7em-unknown-unknown-eabi-cortex-m4
 	@echo copying source files
 	@cp -p  build/tinygo$(EXE)           build/release/tinygo/bin
 ifneq ($(USE_SYSTEM_BINARYEN),1)
@@ -894,10 +920,12 @@ endif
 	@cp -rp lib/musl/src/include         build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/internal        build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/legacy          build/release/tinygo/lib/musl/src
+	@cp -rp lib/musl/src/locale          build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/linux           build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/malloc          build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/mman            build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/math            build/release/tinygo/lib/musl/src
+	@cp -rp lib/musl/src/multibyte       build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/signal          build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/stdio           build/release/tinygo/lib/musl/src
 	@cp -rp lib/musl/src/string          build/release/tinygo/lib/musl/src
@@ -907,6 +935,7 @@ endif
 	@cp -rp lib/mingw-w64/mingw-w64-crt/def-include                 build/release/tinygo/lib/mingw-w64/mingw-w64-crt
 	@cp -rp lib/mingw-w64/mingw-w64-crt/lib-common/api-ms-win-crt-* build/release/tinygo/lib/mingw-w64/mingw-w64-crt/lib-common
 	@cp -rp lib/mingw-w64/mingw-w64-crt/lib-common/kernel32.def.in  build/release/tinygo/lib/mingw-w64/mingw-w64-crt/lib-common
+	@cp -rp lib/mingw-w64/mingw-w64-crt/stdio/ucrt_*                build/release/tinygo/lib/mingw-w64/mingw-w64-crt/stdio
 	@cp -rp lib/mingw-w64/mingw-w64-headers/crt/                    build/release/tinygo/lib/mingw-w64/mingw-w64-headers
 	@cp -rp lib/mingw-w64/mingw-w64-headers/defaults/include        build/release/tinygo/lib/mingw-w64/mingw-w64-headers/defaults
 	@cp -rp lib/nrfx/*                   build/release/tinygo/lib/nrfx
@@ -932,12 +961,6 @@ endif
 	@cp -rp llvm-project/compiler-rt/LICENSE.TXT  build/release/tinygo/lib/compiler-rt-builtins
 	@cp -rp src                          build/release/tinygo/src
 	@cp -rp targets                      build/release/tinygo/targets
-	./build/release/tinygo/bin/tinygo build-library -target=cortex-m0     -o build/release/tinygo/pkg/thumbv6m-unknown-unknown-eabi-cortex-m0/compiler-rt     compiler-rt
-	./build/release/tinygo/bin/tinygo build-library -target=cortex-m0plus -o build/release/tinygo/pkg/thumbv6m-unknown-unknown-eabi-cortex-m0plus/compiler-rt compiler-rt
-	./build/release/tinygo/bin/tinygo build-library -target=cortex-m4     -o build/release/tinygo/pkg/thumbv7em-unknown-unknown-eabi-cortex-m4/compiler-rt    compiler-rt
-	./build/release/tinygo/bin/tinygo build-library -target=cortex-m0     -o build/release/tinygo/pkg/thumbv6m-unknown-unknown-eabi-cortex-m0/picolibc     picolibc
-	./build/release/tinygo/bin/tinygo build-library -target=cortex-m0plus -o build/release/tinygo/pkg/thumbv6m-unknown-unknown-eabi-cortex-m0plus/picolibc picolibc
-	./build/release/tinygo/bin/tinygo build-library -target=cortex-m4     -o build/release/tinygo/pkg/thumbv7em-unknown-unknown-eabi-cortex-m4/picolibc    picolibc
 
 release:
 	tar -czf build/release.tar.gz -C build/release tinygo
@@ -957,18 +980,31 @@ endif
 
 .PHONY: tools
 tools:
-	go generate -C ./internal/tools -tags tools  ./
+	cd internal/tools && go generate -tags tools ./
 
 .PHONY: lint
-lint:
-	go run github.com/mgechev/revive -version
+lint: tools ## Lint source tree
+	revive -version
 	# TODO: lint more directories!
 	# revive.toml isn't flexible enough to filter out just one kind of error from a checker, so do it with grep here.
 	# Can't use grep with friendly formatter.  Plain output isn't too bad, though.
 	# Use 'grep .' to get rid of stray blank line
-	go run github.com/mgechev/revive -config revive.toml compiler/... src/{os,reflect}/*.go | grep -v "should have comment or be unexported" | grep '.' | awk '{print}; END {exit NR>0}'
+	revive -config revive.toml compiler/... src/{os,reflect}/*.go | grep -v "should have comment or be unexported" | grep '.' | awk '{print}; END {exit NR>0}'
 
+SPELLDIRSCMD=find . -depth 1 -type d  | egrep -wv '.git|lib|llvm|src'; find src -depth 1 | egrep -wv 'device|internal|net|vendor'; find src/internal -depth 1 -type d | egrep -wv src/internal/wasi
 .PHONY: spell
-spell:
-	# Check for typos in comments. Skip git submodules etc.
-	go run github.com/client9/misspell/cmd/misspell -i 'ackward,devided,extint,inbetween,programmmer,rela' $$( find . -depth 1 -type d  | egrep -w -v 'lib|llvm|src/net' )
+spell: tools ## Spellcheck source tree
+	misspell -error --dict misspell.csv -i 'ackward,devided,extint,rela' $$( $(SPELLDIRSCMD) ) *.go *.md
+
+.PHONY: spellfix
+spellfix: tools ## Same as spell, but fixes what it finds
+	misspell -w --dict misspell.csv -i 'ackward,devided,extint,rela' $$( $(SPELLDIRSCMD) ) *.go *.md
+
+# https://www.client9.com/self-documenting-makefiles/
+.PHONY: help
+help:
+	@awk -F ':|##' '/^[^\t].+?:.*?##/ {\
+	gsub(/\$$\(LLVM_BUILDDIR\)/, "$(LLVM_BUILDDIR)"); \
+        printf "\033[36m%-30s\033[0m %s\n", $$1, $$NF \
+        }' $(MAKEFILE_LIST)
+#.DEFAULT_GOAL=help

builder/ar.go

@@ -16,7 +16,7 @@ import (
 	"github.com/blakesmith/ar"
 )
 
-// makeArchive creates an arcive for static linking from a list of object files
+// makeArchive creates an archive for static linking from a list of object files
 // given as a parameter. It is equivalent to the following command:
 //
 //	ar -rcs <archivePath> <objs...>
@@ -150,7 +150,7 @@ func makeArchive(arfile *os.File, objs []string) error {
 	}
 
 	// Keep track of the start of the symbol table.
-	symbolTableStart, err := arfile.Seek(0, os.SEEK_CUR)
+	symbolTableStart, err := arfile.Seek(0, io.SeekCurrent)
 	if err != nil {
 		return err
 	}
@@ -172,7 +172,7 @@ func makeArchive(arfile *os.File, objs []string) error {
 
 		// 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)
+		offset, err := arfile.Seek(0, io.SeekCurrent)
 		if err != nil {
 			return err
 		}

builder/build.go

@@ -148,7 +148,7 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 		job := makeDarwinLibSystemJob(config, tmpdir)
 		libcDependencies = append(libcDependencies, job)
 	case "musl":
-		job, unlock, err := Musl.load(config, tmpdir)
+		job, unlock, err := libMusl.load(config, tmpdir)
 		if err != nil {
 			return BuildResult{}, err
 		}
@@ -156,7 +156,7 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 		libcDependencies = append(libcDependencies, dummyCompileJob(filepath.Join(filepath.Dir(job.result), "crt1.o")))
 		libcDependencies = append(libcDependencies, job)
 	case "picolibc":
-		libcJob, unlock, err := Picolibc.load(config, tmpdir)
+		libcJob, unlock, err := libPicolibc.load(config, tmpdir)
 		if err != nil {
 			return BuildResult{}, err
 		}
@@ -169,18 +169,19 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 		}
 		libcDependencies = append(libcDependencies, dummyCompileJob(path))
 	case "wasmbuiltins":
-		libcJob, unlock, err := WasmBuiltins.load(config, tmpdir)
+		libcJob, unlock, err := libWasmBuiltins.load(config, tmpdir)
 		if err != nil {
 			return BuildResult{}, err
 		}
 		defer unlock()
 		libcDependencies = append(libcDependencies, libcJob)
 	case "mingw-w64":
-		_, unlock, err := MinGW.load(config, tmpdir)
+		job, unlock, err := libMinGW.load(config, tmpdir)
 		if err != nil {
 			return BuildResult{}, err
 		}
-		unlock()
+		defer unlock()
+		libcDependencies = append(libcDependencies, job)
 		libcDependencies = append(libcDependencies, makeMinGWExtraLibs(tmpdir, config.GOARCH())...)
 	case "":
 		// no library specified, so nothing to do
@@ -651,7 +652,7 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 	// Add compiler-rt dependency if needed. Usually this is a simple load from
 	// a cache.
 	if config.Target.RTLib == "compiler-rt" {
-		job, unlock, err := CompilerRT.load(config, tmpdir)
+		job, unlock, err := libCompilerRT.load(config, tmpdir)
 		if err != nil {
 			return result, err
 		}
@@ -745,6 +746,7 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 				ldflags = append(ldflags, dependency.result)
 			}
 			ldflags = append(ldflags, "-mllvm", "-mcpu="+config.CPU())
+			ldflags = append(ldflags, "-mllvm", "-mattr="+config.Features()) // needed for MIPS softfloat
 			if config.GOOS() == "windows" {
 				// Options for the MinGW wrapper for the lld COFF linker.
 				ldflags = append(ldflags,
@@ -778,7 +780,7 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 			}
 			err = link(config.Target.Linker, ldflags...)
 			if err != nil {
-				return &commandError{"failed to link", result.Executable, err}
+				return err
 			}
 
 			var calculatedStacks []string
@@ -1257,7 +1259,7 @@ func determineStackSizes(mod llvm.Module, executable string) ([]string, map[stri
 	}
 
 	// Goroutines need to be started and finished and take up some stack space
-	// that way. This can be measured by measuing the stack size of
+	// that way. This can be measured by measuring the stack size of
 	// tinygo_startTask.
 	if numFuncs := len(functions["tinygo_startTask"]); numFuncs != 1 {
 		return nil, nil, fmt.Errorf("expected exactly one definition of tinygo_startTask, got %d", numFuncs)

builder/builder_test.go

@@ -53,23 +53,30 @@ func TestClangAttributes(t *testing.T) {
 	for _, options := range []*compileopts.Options{
 		{GOOS: "linux", GOARCH: "386"},
 		{GOOS: "linux", GOARCH: "amd64"},
-		{GOOS: "linux", GOARCH: "arm", GOARM: "5"},
-		{GOOS: "linux", GOARCH: "arm", GOARM: "6"},
-		{GOOS: "linux", GOARCH: "arm", GOARM: "7"},
+		{GOOS: "linux", GOARCH: "arm", GOARM: "5,softfloat"},
+		{GOOS: "linux", GOARCH: "arm", GOARM: "6,softfloat"},
+		{GOOS: "linux", GOARCH: "arm", GOARM: "7,softfloat"},
+		{GOOS: "linux", GOARCH: "arm", GOARM: "5,hardfloat"},
+		{GOOS: "linux", GOARCH: "arm", GOARM: "6,hardfloat"},
+		{GOOS: "linux", GOARCH: "arm", GOARM: "7,hardfloat"},
 		{GOOS: "linux", GOARCH: "arm64"},
-		{GOOS: "linux", GOARCH: "mips"},
-		{GOOS: "linux", GOARCH: "mipsle"},
+		{GOOS: "linux", GOARCH: "mips", GOMIPS: "hardfloat"},
+		{GOOS: "linux", GOARCH: "mipsle", GOMIPS: "hardfloat"},
+		{GOOS: "linux", GOARCH: "mips", GOMIPS: "softfloat"},
+		{GOOS: "linux", GOARCH: "mipsle", GOMIPS: "softfloat"},
 		{GOOS: "darwin", GOARCH: "amd64"},
 		{GOOS: "darwin", GOARCH: "arm64"},
 		{GOOS: "windows", GOARCH: "amd64"},
 		{GOOS: "windows", GOARCH: "arm64"},
 		{GOOS: "wasip1", GOARCH: "wasm"},
-		{GOOS: "wasip2", GOARCH: "wasm"},
 	} {
 		name := "GOOS=" + options.GOOS + ",GOARCH=" + options.GOARCH
 		if options.GOARCH == "arm" {
 			name += ",GOARM=" + options.GOARM
 		}
+		if options.GOARCH == "mips" || options.GOARCH == "mipsle" {
+			name += ",GOMIPS=" + options.GOMIPS
+		}
 		t.Run(name, func(t *testing.T) {
 			testClangAttributes(t, options)
 		})

builder/builtins.go

@@ -3,8 +3,8 @@ package builder
 import (
 	"os"
 	"path/filepath"
-	"strings"
 
+	"github.com/tinygo-org/tinygo/compileopts"
 	"github.com/tinygo-org/tinygo/goenv"
 )
 
@@ -132,6 +132,38 @@ var genericBuiltins = []string{
 	"umodti3.c",
 }
 
+// These are the GENERIC_TF_SOURCES as of LLVM 18.
+// They are not needed on all platforms (32-bit platforms usually don't need
+// these) but they seem to compile fine so it's easier to include them.
+var genericBuiltins128 = []string{
+	"addtf3.c",
+	"comparetf2.c",
+	"divtc3.c",
+	"divtf3.c",
+	"extenddftf2.c",
+	"extendhftf2.c",
+	"extendsftf2.c",
+	"fixtfdi.c",
+	"fixtfsi.c",
+	"fixtfti.c",
+	"fixunstfdi.c",
+	"fixunstfsi.c",
+	"fixunstfti.c",
+	"floatditf.c",
+	"floatsitf.c",
+	"floattitf.c",
+	"floatunditf.c",
+	"floatunsitf.c",
+	"floatuntitf.c",
+	"multc3.c",
+	"multf3.c",
+	"powitf2.c",
+	"subtf3.c",
+	"trunctfdf2.c",
+	"trunctfhf2.c",
+	"trunctfsf2.c",
+}
+
 var aeabiBuiltins = []string{
 	"arm/aeabi_cdcmp.S",
 	"arm/aeabi_cdcmpeq_check_nan.c",
@@ -169,12 +201,12 @@ var avrBuiltins = []string{
 	"avr/udivmodqi4.S",
 }
 
-// CompilerRT is a library with symbols required by programs compiled with LLVM.
-// These symbols are for operations that cannot be emitted with a single
+// libCompilerRT is a library with symbols required by programs compiled with
+// LLVM. These symbols are for operations that cannot be emitted with a single
 // instruction or a short sequence of instructions for that target.
 //
 // For more information, see: https://compiler-rt.llvm.org/
-var CompilerRT = Library{
+var libCompilerRT = Library{
 	name: "compiler-rt",
 	cflags: func(target, headerPath string) []string {
 		return []string{"-Werror", "-Wall", "-std=c11", "-nostdlibinc"}
@@ -190,11 +222,13 @@ var CompilerRT = Library{
 	},
 	librarySources: func(target string) ([]string, error) {
 		builtins := append([]string{}, genericBuiltins...) // copy genericBuiltins
-		if strings.HasPrefix(target, "arm") || strings.HasPrefix(target, "thumb") {
+		switch compileopts.CanonicalArchName(target) {
+		case "arm":
 			builtins = append(builtins, aeabiBuiltins...)
-		}
-		if strings.HasPrefix(target, "avr") {
+		case "avr":
 			builtins = append(builtins, avrBuiltins...)
+		case "x86_64", "aarch64", "riscv64": // any 64-bit arch
+			builtins = append(builtins, genericBuiltins128...)
 		}
 		return builtins, nil
 	},

builder/cc1as.h

@@ -93,7 +93,7 @@ struct AssemblerInvocation {
   EmitDwarfUnwindType EmitDwarfUnwind;
 
   // Whether to emit compact-unwind for non-canonical entries.
-  // Note: maybe overriden by other constraints.
+  // Note: maybe overridden by other constraints.
   unsigned EmitCompactUnwindNonCanonical : 1;
 
   /// The name of the relocation model to use.

builder/config.go

@@ -27,10 +27,10 @@ func NewConfig(options *compileopts.Options) (*compileopts.Config, error) {
 	if err != nil {
 		return nil, err
 	}
-	if major != 1 || minor < 19 || minor > 22 {
+	if major != 1 || minor < 19 || minor > 23 {
 		// Note: when this gets updated, also update the Go compatibility matrix:
 		// https://github.com/tinygo-org/tinygo-site/blob/dev/content/docs/reference/go-compat-matrix.md
-		return nil, fmt.Errorf("requires go version 1.19 through 1.22, got go%d.%d", major, minor)
+		return nil, fmt.Errorf("requires go version 1.19 through 1.23, got go%d.%d", major, minor)
 	}
 
 	return &compileopts.Config{

builder/error.go

@@ -15,12 +15,12 @@ func (e *MultiError) Error() string {
 
 // newMultiError returns a *MultiError if there is more than one error, or
 // returns that error directly when there is only one. Passing an empty slice
-// will lead to a panic.
+// will return nil (because there is no error).
 // The importPath may be passed if this error is for a single package.
 func newMultiError(errs []error, importPath string) error {
 	switch len(errs) {
 	case 0:
-		panic("attempted to create empty MultiError")
+		return nil
 	case 1:
 		return errs[0]
 	default:

builder/library.go

@@ -35,19 +35,6 @@ type Library struct {
 	crt1Source string
 }
 
-// Load the library archive, possibly generating and caching it if needed.
-// The resulting directory may be stored in the provided tmpdir, which is
-// expected to be removed after the Load call.
-func (l *Library) Load(config *compileopts.Config, tmpdir string) (dir string, err error) {
-	job, unlock, err := l.load(config, tmpdir)
-	if err != nil {
-		return "", err
-	}
-	defer unlock()
-	err = runJobs(job, config.Options.Semaphore)
-	return filepath.Dir(job.result), err
-}
-
 // load returns a compile job to build this library file for the given target
 // and CPU. It may return a dummy compileJob if the library build is already
 // cached. The path is stored as job.result but is only valid after the job has
@@ -162,29 +149,38 @@ func (l *Library) load(config *compileopts.Config, tmpdir string) (job *compileJ
 	if config.ABI() != "" {
 		args = append(args, "-mabi="+config.ABI())
 	}
-	if strings.HasPrefix(target, "arm") || strings.HasPrefix(target, "thumb") {
+	switch compileopts.CanonicalArchName(target) {
+	case "arm":
 		if strings.Split(target, "-")[2] == "linux" {
 			args = append(args, "-fno-unwind-tables", "-fno-asynchronous-unwind-tables")
 		} else {
 			args = append(args, "-fshort-enums", "-fomit-frame-pointer", "-mfloat-abi=soft", "-fno-unwind-tables", "-fno-asynchronous-unwind-tables")
 		}
-	}
-	if strings.HasPrefix(target, "avr") {
+	case "avr":
 		// AVR defaults to C float and double both being 32-bit. This deviates
 		// from what most code (and certainly compiler-rt) expects. So we need
 		// to force the compiler to use 64-bit floating point numbers for
 		// double.
 		args = append(args, "-mdouble=64")
-	}
-	if strings.HasPrefix(target, "riscv32-") {
+	case "riscv32":
 		args = append(args, "-march=rv32imac", "-fforce-enable-int128")
-	}
-	if strings.HasPrefix(target, "riscv64-") {
+	case "riscv64":
 		args = append(args, "-march=rv64gc")
-	}
-	if strings.HasPrefix(target, "mips") {
+	case "mips":
 		args = append(args, "-fno-pic")
 	}
+	if config.Target.SoftFloat {
+		// Use softfloat instead of floating point instructions. This is
+		// supported on many architectures.
+		args = append(args, "-msoft-float")
+	} else {
+		if strings.HasPrefix(target, "armv5") {
+			// On ARMv5 we need to explicitly enable hardware floating point
+			// instructions: Clang appears to assume the hardware doesn't have a
+			// FPU otherwise.
+			args = append(args, "-mfpu=vfpv2")
+		}
+	}
 
 	var once sync.Once
 

builder/mingw-w64.go

@@ -10,7 +10,7 @@ import (
 	"github.com/tinygo-org/tinygo/goenv"
 )
 
-var MinGW = Library{
+var libMinGW = Library{
 	name: "mingw-w64",
 	makeHeaders: func(target, includeDir string) error {
 		// copy _mingw.h
@@ -27,14 +27,30 @@ var MinGW = Library{
 		_, err = io.Copy(outf, inf)
 		return err
 	},
-	sourceDir: func() string { return "" }, // unused
+	sourceDir: func() string { return filepath.Join(goenv.Get("TINYGOROOT"), "lib/mingw-w64") },
 	cflags: func(target, headerPath string) []string {
-		// No flags necessary because there are no files to compile.
-		return nil
+		mingwDir := filepath.Join(goenv.Get("TINYGOROOT"), "lib/mingw-w64")
+		return []string{
+			"-nostdlibinc",
+			"-isystem", mingwDir + "/mingw-w64-headers/crt",
+			"-I", mingwDir + "/mingw-w64-headers/defaults/include",
+			"-I" + headerPath,
+		}
 	},
 	librarySources: func(target string) ([]string, error) {
-		// We only use the UCRT DLL file. No source files necessary.
-		return nil, nil
+		// These files are needed so that printf and the like are supported.
+		sources := []string{
+			"mingw-w64-crt/stdio/ucrt_fprintf.c",
+			"mingw-w64-crt/stdio/ucrt_fwprintf.c",
+			"mingw-w64-crt/stdio/ucrt_printf.c",
+			"mingw-w64-crt/stdio/ucrt_snprintf.c",
+			"mingw-w64-crt/stdio/ucrt_sprintf.c",
+			"mingw-w64-crt/stdio/ucrt_vfprintf.c",
+			"mingw-w64-crt/stdio/ucrt_vprintf.c",
+			"mingw-w64-crt/stdio/ucrt_vsnprintf.c",
+			"mingw-w64-crt/stdio/ucrt_vsprintf.c",
+		}
+		return sources, nil
 	},
 }
 

builder/musl.go

@@ -12,7 +12,7 @@ import (
 	"github.com/tinygo-org/tinygo/goenv"
 )
 
-var Musl = Library{
+var libMusl = Library{
 	name: "musl",
 	makeHeaders: func(target, includeDir string) error {
 		bits := filepath.Join(includeDir, "bits")
@@ -92,6 +92,8 @@ var Musl = Library{
 			"-Wno-ignored-pragmas",
 			"-Wno-tautological-constant-out-of-range-compare",
 			"-Wno-deprecated-non-prototype",
+			"-Wno-format",
+			"-Wno-parentheses",
 			"-Qunused-arguments",
 			// Select include dirs. Don't include standard library includes
 			// (that would introduce host dependencies and other complications),
@@ -119,11 +121,13 @@ var Musl = Library{
 			"internal/syscall_ret.c",
 			"internal/vdso.c",
 			"legacy/*.c",
+			"locale/*.c",
 			"linux/*.c",
 			"malloc/*.c",
 			"malloc/mallocng/*.c",
 			"mman/*.c",
 			"math/*.c",
+			"multibyte/*.c",
 			"signal/*.c",
 			"stdio/*.c",
 			"string/*.c",

builder/picolibc.go

@@ -8,9 +8,9 @@ import (
 	"github.com/tinygo-org/tinygo/goenv"
 )
 
-// Picolibc is a C library for bare metal embedded devices. It was originally
+// libPicolibc is a C library for bare metal embedded devices. It was originally
 // based on newlib.
-var Picolibc = Library{
+var libPicolibc = Library{
 	name: "picolibc",
 	makeHeaders: func(target, includeDir string) error {
 		f, err := os.Create(filepath.Join(includeDir, "picolibc.h"))
@@ -29,6 +29,7 @@ var Picolibc = Library{
 			"-D_HAVE_ALIAS_ATTRIBUTE",
 			"-DTINY_STDIO",
 			"-DPOSIX_IO",
+			"-DFORMAT_DEFAULT_INTEGER", // use __i_vfprintf and __i_vfscanf by default
 			"-D_IEEE_LIBM",
 			"-D__OBSOLETE_MATH_FLOAT=1", // use old math code that doesn't expect a FPU
 			"-D__OBSOLETE_MATH_DOUBLE=0",

builder/tools.go

@@ -1,10 +1,15 @@
 package builder
 
 import (
+	"bytes"
+	"fmt"
+	"go/scanner"
+	"go/token"
 	"os"
 	"os/exec"
-
-	"github.com/tinygo-org/tinygo/goenv"
+	"regexp"
+	"strconv"
+	"strings"
 )
 
 // runCCompiler invokes a C compiler with the given arguments.
@@ -23,22 +28,135 @@ func runCCompiler(flags ...string) error {
 
 // link invokes a linker with the given name and flags.
 func link(linker string, flags ...string) error {
-	if hasBuiltinTools && (linker == "ld.lld" || linker == "wasm-ld") {
-		// Run command with internal linker.
-		cmd := exec.Command(os.Args[0], append([]string{linker}, flags...)...)
-		cmd.Stdout = os.Stdout
-		cmd.Stderr = os.Stderr
-		return cmd.Run()
+	// We only support LLD.
+	if linker != "ld.lld" && linker != "wasm-ld" {
+		return fmt.Errorf("unexpected: linker %s should be ld.lld or wasm-ld", linker)
 	}
 
-	// Fall back to external command.
-	if _, ok := commands[linker]; ok {
-		return execCommand(linker, flags...)
+	var cmd *exec.Cmd
+	if hasBuiltinTools {
+		cmd = exec.Command(os.Args[0], append([]string{linker}, flags...)...)
+	} else {
+		name, err := LookupCommand(linker)
+		if err != nil {
+			return err
+		}
+		cmd = exec.Command(name, flags...)
 	}
-
-	cmd := exec.Command(linker, flags...)
+	var buf bytes.Buffer
 	cmd.Stdout = os.Stdout
-	cmd.Stderr = os.Stderr
-	cmd.Dir = goenv.Get("TINYGOROOT")
-	return cmd.Run()
+	cmd.Stderr = &buf
+	err := cmd.Run()
+	if err != nil {
+		if buf.Len() == 0 {
+			// The linker failed but there was no output.
+			// Therefore, show some output anyway.
+			return fmt.Errorf("failed to run linker: %w", err)
+		}
+		return parseLLDErrors(buf.String())
+	}
+	return nil
+}
+
+// Split LLD errors into individual erros (including errors that continue on the
+// next line, using a ">>>" prefix). If possible, replace the raw errors with a
+// more user-friendly version (and one that's more in a Go style).
+func parseLLDErrors(text string) error {
+	// Split linker output in separate error messages.
+	lines := strings.Split(text, "\n")
+	var errorLines []string // one or more line (belonging to a single error) per line
+	for _, line := range lines {
+		line = strings.TrimRight(line, "\r") // needed for Windows
+		if len(errorLines) != 0 && strings.HasPrefix(line, ">>> ") {
+			errorLines[len(errorLines)-1] += "\n" + line
+			continue
+		}
+		if line == "" {
+			continue
+		}
+		errorLines = append(errorLines, line)
+	}
+
+	// Parse error messages.
+	var linkErrors []error
+	var flashOverflow, ramOverflow uint64
+	for _, message := range errorLines {
+		parsedError := false
+
+		// Check for undefined symbols.
+		// This can happen in some cases like with CGo and //go:linkname tricker.
+		if matches := regexp.MustCompile(`^ld.lld: error: undefined symbol: (.*)\n`).FindStringSubmatch(message); matches != nil {
+			symbolName := matches[1]
+			for _, line := range strings.Split(message, "\n") {
+				matches := regexp.MustCompile(`referenced by .* \(((.*):([0-9]+))\)`).FindStringSubmatch(line)
+				if matches != nil {
+					parsedError = true
+					line, _ := strconv.Atoi(matches[3])
+					// TODO: detect common mistakes like -gc=none?
+					linkErrors = append(linkErrors, scanner.Error{
+						Pos: token.Position{
+							Filename: matches[2],
+							Line:     line,
+						},
+						Msg: "linker could not find symbol " + symbolName,
+					})
+				}
+			}
+		}
+
+		// Check for flash/RAM overflow.
+		if matches := regexp.MustCompile(`^ld.lld: error: section '(.*?)' will not fit in region '(.*?)': overflowed by ([0-9]+) bytes$`).FindStringSubmatch(message); matches != nil {
+			region := matches[2]
+			n, err := strconv.ParseUint(matches[3], 10, 64)
+			if err != nil {
+				// Should not happen at all (unless it overflows an uint64 for some reason).
+				continue
+			}
+
+			// Check which area overflowed.
+			// Some chips use differently named memory areas, but these are by
+			// far the most common.
+			switch region {
+			case "FLASH_TEXT":
+				if n > flashOverflow {
+					flashOverflow = n
+				}
+				parsedError = true
+			case "RAM":
+				if n > ramOverflow {
+					ramOverflow = n
+				}
+				parsedError = true
+			}
+		}
+
+		// If we couldn't parse the linker error: show the error as-is to
+		// the user.
+		if !parsedError {
+			linkErrors = append(linkErrors, LinkerError{message})
+		}
+	}
+
+	if flashOverflow > 0 {
+		linkErrors = append(linkErrors, LinkerError{
+			Msg: fmt.Sprintf("program too large for this chip (flash overflowed by %d bytes)\n\toptimization guide: https://tinygo.org/docs/guides/optimizing-binaries/", flashOverflow),
+		})
+	}
+	if ramOverflow > 0 {
+		linkErrors = append(linkErrors, LinkerError{
+			Msg: fmt.Sprintf("program uses too much static RAM on this chip (RAM overflowed by %d bytes)", ramOverflow),
+		})
+	}
+
+	return newMultiError(linkErrors, "")
+}
+
+// LLD linker error that could not be parsed or doesn't refer to a source
+// location.
+type LinkerError struct {
+	Msg string
+}
+
+func (e LinkerError) Error() string {
+	return e.Msg
 }

builder/wasmbuiltins.go

@@ -7,7 +7,7 @@ import (
 	"github.com/tinygo-org/tinygo/goenv"
 )
 
-var WasmBuiltins = Library{
+var libWasmBuiltins = Library{
 	name: "wasmbuiltins",
 	makeHeaders: func(target, includeDir string) error {
 		if err := os.Mkdir(includeDir+"/bits", 0o777); err != nil {

compileopts/config.go

@@ -60,7 +60,7 @@ func (c *Config) GOOS() string {
 }
 
 // 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
+// architecture: 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
@@ -72,12 +72,19 @@ func (c *Config) GOARM() string {
 	return c.Options.GOARM
 }
 
+// GOMIPS will return the GOMIPS environment variable given to the compiler when
+// building a program.
+func (c *Config) GOMIPS() string {
+	return c.Options.GOMIPS
+}
+
 // BuildTags returns the complete list of build tags used during this build.
 func (c *Config) BuildTags() []string {
 	tags := append([]string(nil), c.Target.BuildTags...) // copy slice (avoid a race)
 	tags = append(tags, []string{
 		"tinygo",                                     // that's the compiler
 		"purego",                                     // to get various crypto packages to work
+		"osusergo",                                   // to get os/user to work
 		"math_big_pure_go",                           // to get math/big to work
 		"gc." + c.GC(), "scheduler." + c.Scheduler(), // used inside the runtime package
 		"serial." + c.Serial()}...) // used inside the machine package
@@ -207,10 +214,13 @@ func (c *Config) RP2040BootPatch() bool {
 	return false
 }
 
-// MuslArchitecture returns the architecture name as used in musl libc. It is
-// usually the same as the first part of the LLVM triple, but not always.
-func MuslArchitecture(triple string) string {
+// Return a canonicalized architecture name, so we don't have to deal with arm*
+// vs thumb* vs arm64.
+func CanonicalArchName(triple string) string {
 	arch := strings.Split(triple, "-")[0]
+	if arch == "arm64" {
+		return "aarch64"
+	}
 	if strings.HasPrefix(arch, "arm") || strings.HasPrefix(arch, "thumb") {
 		return "arm"
 	}
@@ -220,6 +230,12 @@ func MuslArchitecture(triple string) string {
 	return arch
 }
 
+// MuslArchitecture returns the architecture name as used in musl libc. It is
+// usually the same as the first part of the LLVM triple, but not always.
+func MuslArchitecture(triple string) string {
+	return CanonicalArchName(triple)
+}
+
 // LibcPath returns the path to the libc directory. The libc path will be either
 // a precompiled libc shipped with a TinyGo build, or a libc path in the cache
 // directory (which might not yet be built).
@@ -231,6 +247,9 @@ func (c *Config) LibcPath(name string) (path string, precompiled bool) {
 	if c.ABI() != "" {
 		archname += "-" + c.ABI()
 	}
+	if c.Target.SoftFloat {
+		archname += "-softfloat"
+	}
 
 	// Try to load a precompiled library.
 	precompiledDir := filepath.Join(goenv.Get("TINYGOROOT"), "pkg", archname, name)
@@ -443,7 +462,7 @@ func (c *Config) BinaryFormat(ext string) string {
 
 // 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.
+// file or be modified using the -programmer command-line option.
 func (c *Config) Programmer() (method, openocdInterface string) {
 	switch c.Options.Programmer {
 	case "":

compileopts/options.go

@@ -23,6 +23,7 @@ type Options struct {
 	GOOS            string // environment variable
 	GOARCH          string // environment variable
 	GOARM           string // environment variable (only used with GOARCH=arm)
+	GOMIPS          string // environment variable (only used with GOARCH=mips and GOARCH=mipsle)
 	Directory       string // working dir, leave it unset to use the current working dir
 	Target          string
 	Opt             string

compileopts/target.go

@@ -30,6 +30,7 @@ type TargetSpec struct {
 	Features         string   `json:"features,omitempty"`
 	GOOS             string   `json:"goos,omitempty"`
 	GOARCH           string   `json:"goarch,omitempty"`
+	SoftFloat        bool     // used for non-baremetal systems (GOMIPS=softfloat etc)
 	BuildTags        []string `json:"build-tags,omitempty"`
 	GC               string   `json:"gc,omitempty"`
 	Scheduler        string   `json:"scheduler,omitempty"`
@@ -86,6 +87,10 @@ func (spec *TargetSpec) overrideProperties(child *TargetSpec) error {
 			if src.Uint() != 0 {
 				dst.Set(src)
 			}
+		case reflect.Bool:
+			if src.Bool() {
+				dst.Set(src)
+			}
 		case reflect.Ptr: // for pointers, copy if not nil
 			if !src.IsNil() {
 				dst.Set(src)
@@ -172,63 +177,7 @@ func (spec *TargetSpec) resolveInherits() error {
 // Load a target specification.
 func LoadTarget(options *Options) (*TargetSpec, error) {
 	if options.Target == "" {
-		// Configure based on GOOS/GOARCH environment variables (falling back to
-		// runtime.GOOS/runtime.GOARCH), and generate a LLVM target based on it.
-		var llvmarch string
-		switch options.GOARCH {
-		case "386":
-			llvmarch = "i386"
-		case "amd64":
-			llvmarch = "x86_64"
-		case "arm64":
-			llvmarch = "aarch64"
-		case "arm":
-			switch options.GOARM {
-			case "5":
-				llvmarch = "armv5"
-			case "6":
-				llvmarch = "armv6"
-			case "7":
-				llvmarch = "armv7"
-			default:
-				return nil, fmt.Errorf("invalid GOARM=%s, must be 5, 6, or 7", options.GOARM)
-			}
-		case "mips":
-			llvmarch = "mips"
-		case "mipsle":
-			llvmarch = "mipsel"
-		case "wasm":
-			llvmarch = "wasm32"
-		default:
-			llvmarch = options.GOARCH
-		}
-		llvmvendor := "unknown"
-		llvmos := options.GOOS
-		switch llvmos {
-		case "darwin":
-			// Use macosx* instead of darwin, otherwise darwin/arm64 will refer
-			// to iOS!
-			llvmos = "macosx10.12.0"
-			if llvmarch == "aarch64" {
-				// Looks like Apple prefers to call this architecture ARM64
-				// instead of AArch64.
-				llvmarch = "arm64"
-				llvmos = "macosx11.0.0"
-			}
-			llvmvendor = "apple"
-		case "wasip1":
-			llvmos = "wasi"
-		}
-		// Target triples (which actually have four components, but are called
-		// triples for historical reasons) have the form:
-		//   arch-vendor-os-environment
-		target := llvmarch + "-" + llvmvendor + "-" + llvmos
-		if options.GOOS == "windows" {
-			target += "-gnu"
-		} else if options.GOARCH == "arm" {
-			target += "-gnueabihf"
-		}
-		return defaultTarget(options.GOOS, options.GOARCH, target)
+		return defaultTarget(options)
 	}
 
 	// See whether there is a target specification for this target (e.g.
@@ -289,14 +238,13 @@ func GetTargetSpecs() (map[string]*TargetSpec, error) {
 	return maps, nil
 }
 
-func defaultTarget(goos, goarch, triple string) (*TargetSpec, error) {
-	// No target spec available. Use the default one, useful on most systems
-	// with a regular OS.
+// Load a target from environment variables (which default to
+// runtime.GOOS/runtime.GOARCH).
+func defaultTarget(options *Options) (*TargetSpec, error) {
 	spec := TargetSpec{
-		Triple:           triple,
-		GOOS:             goos,
-		GOARCH:           goarch,
-		BuildTags:        []string{goos, goarch},
+		GOOS:             options.GOOS,
+		GOARCH:           options.GOARCH,
+		BuildTags:        []string{options.GOOS, options.GOARCH},
 		GC:               "precise",
 		Scheduler:        "tasks",
 		Linker:           "cc",
@@ -304,38 +252,109 @@ func defaultTarget(goos, goarch, triple string) (*TargetSpec, error) {
 		GDB:              []string{"gdb"},
 		PortReset:        "false",
 	}
-	switch goarch {
+
+	// Configure target based on GOARCH.
+	var llvmarch string
+	switch options.GOARCH {
 	case "386":
+		llvmarch = "i386"
 		spec.CPU = "pentium4"
 		spec.Features = "+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87"
 	case "amd64":
+		llvmarch = "x86_64"
 		spec.CPU = "x86-64"
 		spec.Features = "+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87"
 	case "arm":
 		spec.CPU = "generic"
 		spec.CFlags = append(spec.CFlags, "-fno-unwind-tables", "-fno-asynchronous-unwind-tables")
-		switch strings.Split(triple, "-")[0] {
-		case "armv5":
-			spec.Features = "+armv5t,+strict-align,-aes,-bf16,-d32,-dotprod,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-mve.fp,-neon,-sha2,-thumb-mode,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp"
-		case "armv6":
-			spec.Features = "+armv6,+dsp,+fp64,+strict-align,+vfp2,+vfp2sp,-aes,-d32,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fullfp16,-neon,-sha2,-thumb-mode,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp"
-		case "armv7":
-			spec.Features = "+armv7-a,+d32,+dsp,+fp64,+neon,+vfp2,+vfp2sp,+vfp3,+vfp3d16,+vfp3d16sp,+vfp3sp,-aes,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fullfp16,-sha2,-thumb-mode,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp"
+		subarch := strings.Split(options.GOARM, ",")
+		if len(subarch) > 2 {
+			return nil, fmt.Errorf("invalid GOARM=%s, must be of form <num>,[hardfloat|softfloat]", options.GOARM)
+		}
+		archLevel := subarch[0]
+		var fpu string
+		if len(subarch) >= 2 {
+			fpu = subarch[1]
+		} else {
+			// Pick the default fpu value: softfloat for armv5 and hardfloat
+			// above that.
+			if archLevel == "5" {
+				fpu = "softfloat"
+			} else {
+				fpu = "hardfloat"
+			}
+		}
+		switch fpu {
+		case "softfloat":
+			spec.CFlags = append(spec.CFlags, "-msoft-float")
+			spec.SoftFloat = true
+		case "hardfloat":
+			// Hardware floating point support is the default everywhere except
+			// on ARMv5 where it needs to be enabled explicitly.
+			if archLevel == "5" {
+				spec.CFlags = append(spec.CFlags, "-mfpu=vfpv2")
+			}
+		default:
+			return nil, fmt.Errorf("invalid extension GOARM=%s, must be softfloat or hardfloat", options.GOARM)
+		}
+		switch archLevel {
+		case "5":
+			llvmarch = "armv5"
+			if spec.SoftFloat {
+				spec.Features = "+armv5t,+soft-float,+strict-align,-aes,-bf16,-d32,-dotprod,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-mve,-mve.fp,-neon,-sha2,-thumb-mode,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp"
+			} else {
+				spec.Features = "+armv5t,+fp64,+strict-align,+vfp2,+vfp2sp,-aes,-d32,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fullfp16,-neon,-sha2,-thumb-mode,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp"
+			}
+		case "6":
+			llvmarch = "armv6"
+			if spec.SoftFloat {
+				spec.Features = "+armv6,+dsp,+soft-float,+strict-align,-aes,-bf16,-d32,-dotprod,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-mve,-mve.fp,-neon,-sha2,-thumb-mode,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp"
+			} else {
+				spec.Features = "+armv6,+dsp,+fp64,+strict-align,+vfp2,+vfp2sp,-aes,-d32,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fullfp16,-neon,-sha2,-thumb-mode,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp"
+			}
+		case "7":
+			llvmarch = "armv7"
+			if spec.SoftFloat {
+				spec.Features = "+armv7-a,+dsp,+soft-float,-aes,-bf16,-d32,-dotprod,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-mve,-mve.fp,-neon,-sha2,-thumb-mode,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp"
+			} else {
+				spec.Features = "+armv7-a,+d32,+dsp,+fp64,+neon,+vfp2,+vfp2sp,+vfp3,+vfp3d16,+vfp3d16sp,+vfp3sp,-aes,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fullfp16,-sha2,-thumb-mode,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp"
+			}
+		default:
+			return nil, fmt.Errorf("invalid GOARM=%s, must be of form <num>,[hardfloat|softfloat] where num is 5, 6, or 7", options.GOARM)
 		}
 	case "arm64":
 		spec.CPU = "generic"
-		if goos == "darwin" {
+		llvmarch = "aarch64"
+		if options.GOOS == "darwin" {
 			spec.Features = "+fp-armv8,+neon"
-		} else if goos == "windows" {
+			// Looks like Apple prefers to call this architecture ARM64
+			// instead of AArch64.
+			llvmarch = "arm64"
+		} else if options.GOOS == "windows" {
 			spec.Features = "+fp-armv8,+neon,-fmv"
 		} else { // linux
 			spec.Features = "+fp-armv8,+neon,-fmv,-outline-atomics"
 		}
 	case "mips", "mipsle":
-		spec.CPU = "mips32r2"
-		spec.Features = "+fpxx,+mips32r2,+nooddspreg,-noabicalls"
+		spec.CPU = "mips32"
 		spec.CFlags = append(spec.CFlags, "-fno-pic")
+		if options.GOARCH == "mips" {
+			llvmarch = "mips" // big endian
+		} else {
+			llvmarch = "mipsel" // little endian
+		}
+		switch options.GOMIPS {
+		case "hardfloat":
+			spec.Features = "+fpxx,+mips32,+nooddspreg,-noabicalls"
+		case "softfloat":
+			spec.SoftFloat = true
+			spec.Features = "+mips32,+soft-float,-noabicalls"
+			spec.CFlags = append(spec.CFlags, "-msoft-float")
+		default:
+			return nil, fmt.Errorf("invalid GOMIPS=%s: must be hardfloat or softfloat", options.GOMIPS)
+		}
 	case "wasm":
+		llvmarch = "wasm32"
 		spec.CPU = "generic"
 		spec.Features = "+bulk-memory,+mutable-globals,+nontrapping-fptoint,+sign-ext"
 		spec.BuildTags = append(spec.BuildTags, "tinygo.wasm")
@@ -344,24 +363,40 @@ func defaultTarget(goos, goarch, triple string) (*TargetSpec, error) {
 			"-mnontrapping-fptoint",
 			"-msign-ext",
 		)
+	default:
+		return nil, fmt.Errorf("unknown GOARCH=%s", options.GOARCH)
 	}
-	if goos == "darwin" {
+
+	// Configure target based on GOOS.
+	llvmos := options.GOOS
+	llvmvendor := "unknown"
+	switch options.GOOS {
+	case "darwin":
+		platformVersion := "10.12.0"
+		if options.GOARCH == "arm64" {
+			platformVersion = "11.0.0" // first macosx platform with arm64 support
+		}
+		llvmvendor = "apple"
 		spec.Linker = "ld.lld"
 		spec.Libc = "darwin-libSystem"
-		arch := strings.Split(triple, "-")[0]
-		platformVersion := strings.TrimPrefix(strings.Split(triple, "-")[2], "macosx")
+		// Use macosx* instead of darwin, otherwise darwin/arm64 will refer to
+		// iOS!
+		llvmos = "macosx" + platformVersion
 		spec.LDFlags = append(spec.LDFlags,
 			"-flavor", "darwin",
 			"-dead_strip",
-			"-arch", arch,
+			"-arch", llvmarch,
 			"-platform_version", "macos", platformVersion, platformVersion,
 		)
-	} else if goos == "linux" {
+		spec.ExtraFiles = append(spec.ExtraFiles,
+			"src/runtime/os_darwin.c",
+			"src/runtime/runtime_unix.c")
+	case "linux":
 		spec.Linker = "ld.lld"
 		spec.RTLib = "compiler-rt"
 		spec.Libc = "musl"
 		spec.LDFlags = append(spec.LDFlags, "--gc-sections")
-		if goarch == "arm64" {
+		if options.GOARCH == "arm64" {
 			// Disable outline atomics. For details, see:
 			// https://cpufun.substack.com/p/atomics-in-aarch64
 			// A better way would be to fully support outline atomics, which
@@ -375,7 +410,9 @@ func defaultTarget(goos, goarch, triple string) (*TargetSpec, error) {
 			// proper threading.
 			spec.CFlags = append(spec.CFlags, "-mno-outline-atomics")
 		}
-	} else if goos == "windows" {
+		spec.ExtraFiles = append(spec.ExtraFiles,
+			"src/runtime/runtime_unix.c")
+	case "windows":
 		spec.Linker = "ld.lld"
 		spec.Libc = "mingw-w64"
 		// Note: using a medium code model, low image base and no ASLR
@@ -384,7 +421,7 @@ func defaultTarget(goos, goarch, triple string) (*TargetSpec, error) {
 		// normally present in Go (without explicitly opting in).
 		// For more discussion:
 		// https://groups.google.com/g/Golang-nuts/c/Jd9tlNc6jUE/m/Zo-7zIP_m3MJ?pli=1
-		switch goarch {
+		switch options.GOARCH {
 		case "amd64":
 			spec.LDFlags = append(spec.LDFlags,
 				"-m", "i386pep",
@@ -401,7 +438,7 @@ func defaultTarget(goos, goarch, triple string) (*TargetSpec, error) {
 			"--no-insert-timestamp",
 			"--no-dynamicbase",
 		)
-	} else if goos == "wasip1" {
+	case "wasip1":
 		spec.GC = "" // use default GC
 		spec.Scheduler = "asyncify"
 		spec.Linker = "wasm-ld"
@@ -417,28 +454,50 @@ func defaultTarget(goos, goarch, triple string) (*TargetSpec, error) {
 			"src/runtime/asm_tinygowasm.S",
 			"src/internal/task/task_asyncify_wasm.S",
 		)
-	} else {
-		spec.LDFlags = append(spec.LDFlags, "-no-pie", "-Wl,--gc-sections") // WARNING: clang < 5.0 requires -nopie
+		llvmos = "wasi"
+	default:
+		return nil, fmt.Errorf("unknown GOOS=%s", options.GOOS)
 	}
-	if goarch != "wasm" {
+
+	// Target triples (which actually have four components, but are called
+	// triples for historical reasons) have the form:
+	//   arch-vendor-os-environment
+	spec.Triple = llvmarch + "-" + llvmvendor + "-" + llvmos
+	if options.GOOS == "windows" {
+		spec.Triple += "-gnu"
+	} else if options.GOOS == "linux" {
+		// We use musl on Linux (not glibc) so we should use -musleabi* instead
+		// of -gnueabi*.
+		// The *hf suffix selects between soft/hard floating point ABI.
+		if spec.SoftFloat {
+			spec.Triple += "-musleabi"
+		} else {
+			spec.Triple += "-musleabihf"
+		}
+	}
+
+	// Add extra assembly files (needed for the scheduler etc).
+	if options.GOARCH != "wasm" {
 		suffix := ""
-		if goos == "windows" && goarch == "amd64" {
+		if options.GOOS == "windows" && options.GOARCH == "amd64" {
 			// Windows uses a different calling convention on amd64 from other
 			// operating systems so we need separate assembly files.
 			suffix = "_windows"
 		}
-		asmGoarch := goarch
-		if goarch == "mips" || goarch == "mipsle" {
+		asmGoarch := options.GOARCH
+		if options.GOARCH == "mips" || options.GOARCH == "mipsle" {
 			asmGoarch = "mipsx"
 		}
 		spec.ExtraFiles = append(spec.ExtraFiles, "src/runtime/asm_"+asmGoarch+suffix+".S")
 		spec.ExtraFiles = append(spec.ExtraFiles, "src/internal/task/task_stack_"+asmGoarch+suffix+".S")
 	}
-	if goarch != runtime.GOARCH {
+
+	// Configure the emulator.
+	if options.GOARCH != runtime.GOARCH {
 		// Some educated guesses as to how to invoke helper programs.
 		spec.GDB = []string{"gdb-multiarch"}
-		if goos == "linux" {
-			switch goarch {
+		if options.GOOS == "linux" {
+			switch options.GOARCH {
 			case "386":
 				// amd64 can _usually_ run 32-bit programs, so skip the emulator in that case.
 				if runtime.GOARCH != "amd64" {
@@ -457,11 +516,12 @@ func defaultTarget(goos, goarch, triple string) (*TargetSpec, error) {
 			}
 		}
 	}
-	if goos != runtime.GOOS {
-		if goos == "windows" {
+	if options.GOOS != runtime.GOOS {
+		if options.GOOS == "windows" {
 			spec.Emulator = "wine {}"
 		}
 	}
+
 	return &spec, nil
 }
 

compiler/asserts.go

@@ -99,7 +99,7 @@ func (b *builder) createUnsafeSliceStringCheck(name string, ptr, len llvm.Value,
 	// However, in practice, it is also necessary to check that the length is
 	// not too big that a GEP wouldn't be possible without wrapping the pointer.
 	// These two checks (non-negative and not too big) can be merged into one
-	// using an unsiged greater than.
+	// using an unsigned greater than.
 
 	// Make sure the len value is at least as big as a uintptr.
 	len = b.extendInteger(len, lenType, b.uintptrType)

compiler/atomic.go

@@ -15,6 +15,16 @@ func (b *builder) createAtomicOp(name string) llvm.Value {
 		oldVal := b.CreateAtomicRMW(llvm.AtomicRMWBinOpAdd, ptr, val, llvm.AtomicOrderingSequentiallyConsistent, true)
 		// Return the new value, not the original value returned by atomicrmw.
 		return b.CreateAdd(oldVal, val, "")
+	case "AndInt32", "AndInt64", "AndUint32", "AndUint64", "AndUintptr":
+		ptr := b.getValue(b.fn.Params[0], getPos(b.fn))
+		val := b.getValue(b.fn.Params[1], getPos(b.fn))
+		oldVal := b.CreateAtomicRMW(llvm.AtomicRMWBinOpAnd, ptr, val, llvm.AtomicOrderingSequentiallyConsistent, true)
+		return oldVal
+	case "OrInt32", "OrInt64", "OrUint32", "OrUint64", "OrUintptr":
+		ptr := b.getValue(b.fn.Params[0], getPos(b.fn))
+		val := b.getValue(b.fn.Params[1], getPos(b.fn))
+		oldVal := b.CreateAtomicRMW(llvm.AtomicRMWBinOpOr, ptr, val, llvm.AtomicOrderingSequentiallyConsistent, true)
+		return oldVal
 	case "SwapInt32", "SwapInt64", "SwapUint32", "SwapUint64", "SwapUintptr", "SwapPointer":
 		ptr := b.getValue(b.fn.Params[0], getPos(b.fn))
 		val := b.getValue(b.fn.Params[1], getPos(b.fn))

compiler/compiler.go

@@ -242,7 +242,7 @@ func NewTargetMachine(config *Config) (llvm.TargetMachine, error) {
 }
 
 // Sizes returns a types.Sizes appropriate for the given target machine. It
-// includes the correct int size and aligment as is necessary for the Go
+// includes the correct int size and alignment as is necessary for the Go
 // typechecker.
 func Sizes(machine llvm.TargetMachine) types.Sizes {
 	targetData := machine.CreateTargetData()
@@ -1847,7 +1847,9 @@ func (b *builder) createFunctionCall(instr *ssa.CallCommon) (llvm.Value, error)
 		case strings.HasPrefix(name, "(device/riscv.CSR)."):
 			return b.emitCSROperation(instr)
 		case strings.HasPrefix(name, "syscall.Syscall") || strings.HasPrefix(name, "syscall.RawSyscall") || strings.HasPrefix(name, "golang.org/x/sys/unix.Syscall") || strings.HasPrefix(name, "golang.org/x/sys/unix.RawSyscall"):
-			return b.createSyscall(instr)
+			if b.GOOS != "darwin" {
+				return b.createSyscall(instr)
+			}
 		case strings.HasPrefix(name, "syscall.rawSyscallNoError") || strings.HasPrefix(name, "golang.org/x/sys/unix.RawSyscallNoError"):
 			return b.createRawSyscallNoError(instr)
 		case name == "runtime.supportsRecover":
@@ -1865,6 +1867,11 @@ func (b *builder) createFunctionCall(instr *ssa.CallCommon) (llvm.Value, error)
 			return llvm.ConstInt(b.ctx.Int8Type(), panicStrategy, false), nil
 		case name == "runtime/interrupt.New":
 			return b.createInterruptGlobal(instr)
+		case name == "internal/abi.FuncPCABI0":
+			retval := b.createDarwinFuncPCABI0Call(instr)
+			if !retval.IsNil() {
+				return retval, nil
+			}
 		}
 
 		calleeType, callee = b.getFunction(fn)
@@ -1963,7 +1970,7 @@ func (b *builder) getValue(expr ssa.Value, pos token.Pos) llvm.Value {
 			return value
 		} else {
 			// indicates a compiler bug
-			panic("local has not been parsed: " + expr.String())
+			panic("SSA value not previously found in function: " + expr.String())
 		}
 	}
 }

compiler/defer.go

@@ -16,6 +16,7 @@ package compiler
 import (
 	"go/types"
 	"strconv"
+	"strings"
 
 	"github.com/tinygo-org/tinygo/compiler/llvmutil"
 	"golang.org/x/tools/go/ssa"
@@ -198,7 +199,13 @@ jal 1f
 addiu $$ra, 8
 sw $$ra, 4($$5)
 .set at`
-		constraints = "={$4},{$5},~{$1},~{$2},~{$3},~{$5},~{$6},~{$7},~{$8},~{$9},~{$10},~{$11},~{$12},~{$13},~{$14},~{$15},~{$16},~{$17},~{$18},~{$19},~{$20},~{$21},~{$22},~{$23},~{$24},~{$25},~{$26},~{$27},~{$28},~{$29},~{$30},~{$31},~{$f0},~{$f1},~{$f2},~{$f3},~{$f4},~{$f5},~{$f6},~{$f7},~{$f8},~{$f9},~{$f10},~{$f11},~{$f12},~{$f13},~{$f14},~{$f15},~{$f16},~{$f17},~{$f18},~{$f19},~{$f20},~{$f21},~{$f22},~{$f23},~{$f24},~{$f25},~{$f26},~{$f27},~{$f28},~{$f29},~{$f30},~{$f31},~{memory}"
+		constraints = "={$4},{$5},~{$1},~{$2},~{$3},~{$5},~{$6},~{$7},~{$8},~{$9},~{$10},~{$11},~{$12},~{$13},~{$14},~{$15},~{$16},~{$17},~{$18},~{$19},~{$20},~{$21},~{$22},~{$23},~{$24},~{$25},~{$26},~{$27},~{$28},~{$29},~{$30},~{$31},~{memory}"
+		if !strings.Contains(b.Features, "+soft-float") {
+			// Using floating point registers together with GOMIPS=softfloat
+			// results in a crash: "This value type is not natively supported!"
+			// So only add them when using hardfloat.
+			constraints += ",~{$f0},~{$f1},~{$f2},~{$f3},~{$f4},~{$f5},~{$f6},~{$f7},~{$f8},~{$f9},~{$f10},~{$f11},~{$f12},~{$f13},~{$f14},~{$f15},~{$f16},~{$f17},~{$f18},~{$f19},~{$f20},~{$f21},~{$f22},~{$f23},~{$f24},~{$f25},~{$f26},~{$f27},~{$f28},~{$f29},~{$f30},~{$f31}"
+		}
 	case "riscv32":
 		asmString = `
 la a2, 1f

compiler/gc.go

@@ -78,7 +78,7 @@ func (b *builder) trackValue(value llvm.Value) {
 	}
 }
 
-// trackPointer creates a call to runtime.trackPointer, bitcasting the poitner
+// trackPointer creates a call to runtime.trackPointer, bitcasting the pointer
 // first if needed. The input value must be of LLVM pointer type.
 func (b *builder) trackPointer(value llvm.Value) {
 	b.createRuntimeCall("trackPointer", []llvm.Value{value, b.stackChainAlloca}, "")

compiler/goroutine.go

@@ -13,37 +13,7 @@ import (
 
 // createGo emits code to start a new goroutine.
 func (b *builder) createGo(instr *ssa.Go) {
-	// Get all function parameters to pass to the goroutine.
-	var params []llvm.Value
-	for _, param := range instr.Call.Args {
-		params = append(params, b.getValue(param, getPos(instr)))
-	}
-
-	var prefix string
-	var funcPtr llvm.Value
-	var funcType llvm.Type
-	hasContext := false
-	if callee := instr.Call.StaticCallee(); callee != nil {
-		// Static callee is known. This makes it easier to start a new
-		// goroutine.
-		var context llvm.Value
-		switch value := instr.Call.Value.(type) {
-		case *ssa.Function:
-			// Goroutine call is regular function call. No context is necessary.
-		case *ssa.MakeClosure:
-			// A goroutine call on a func value, but the callee is trivial to find. For
-			// example: immediately applied functions.
-			funcValue := b.getValue(value, getPos(instr))
-			context = b.extractFuncContext(funcValue)
-		default:
-			panic("StaticCallee returned an unexpected value")
-		}
-		if !context.IsNil() {
-			params = append(params, context) // context parameter
-			hasContext = true
-		}
-		funcType, funcPtr = b.getFunction(callee)
-	} else if builtin, ok := instr.Call.Value.(*ssa.Builtin); ok {
+	if builtin, ok := instr.Call.Value.(*ssa.Builtin); ok {
 		// We cheat. None of the builtins do any long or blocking operation, so
 		// we might as well run these builtins right away without the program
 		// noticing the difference.
@@ -74,6 +44,38 @@ func (b *builder) createGo(instr *ssa.Go) {
 		}
 		b.createBuiltin(argTypes, argValues, builtin.Name(), instr.Pos())
 		return
+	}
+
+	// Get all function parameters to pass to the goroutine.
+	var params []llvm.Value
+	for _, param := range instr.Call.Args {
+		params = append(params, b.expandFormalParam(b.getValue(param, getPos(instr)))...)
+	}
+
+	var prefix string
+	var funcPtr llvm.Value
+	var funcType llvm.Type
+	hasContext := false
+	if callee := instr.Call.StaticCallee(); callee != nil {
+		// Static callee is known. This makes it easier to start a new
+		// goroutine.
+		var context llvm.Value
+		switch value := instr.Call.Value.(type) {
+		case *ssa.Function:
+			// Goroutine call is regular function call. No context is necessary.
+		case *ssa.MakeClosure:
+			// A goroutine call on a func value, but the callee is trivial to find. For
+			// example: immediately applied functions.
+			funcValue := b.getValue(value, getPos(instr))
+			context = b.extractFuncContext(funcValue)
+		default:
+			panic("StaticCallee returned an unexpected value")
+		}
+		if !context.IsNil() {
+			params = append(params, context) // context parameter
+			hasContext = true
+		}
+		funcType, funcPtr = b.getFunction(callee)
 	} else if instr.Call.IsInvoke() {
 		// This is a method call on an interface value.
 		itf := b.getValue(instr.Call.Value, getPos(instr))

compiler/interface.go

@@ -86,7 +86,7 @@ func (b *builder) createMakeInterface(val llvm.Value, typ types.Type, pos token.
 
 // extractValueFromInterface extract the value from an interface value
 // (runtime._interface) under the assumption that it is of the type given in
-// llvmType. The behavior is undefied if the interface is nil or llvmType
+// llvmType. The behavior is undefined if the interface is nil or llvmType
 // doesn't match the underlying type of the interface.
 func (b *builder) extractValueFromInterface(itf llvm.Value, llvmType llvm.Type) llvm.Value {
 	valuePtr := b.CreateExtractValue(itf, 1, "typeassert.value.ptr")

compiler/llvm.go

@@ -7,6 +7,7 @@ import (
 	"math/big"
 	"strings"
 
+	"github.com/tinygo-org/tinygo/compileopts"
 	"github.com/tinygo-org/tinygo/compiler/llvmutil"
 	"tinygo.org/x/go-llvm"
 )
@@ -418,21 +419,11 @@ func (c *compilerContext) getPointerBitmap(typ llvm.Type, pos token.Pos) *big.In
 	}
 }
 
-// archFamily returns the archtecture from the LLVM triple but with some
+// archFamily returns the architecture from the LLVM triple but with some
 // architecture names ("armv6", "thumbv7m", etc) merged into a single
 // architecture name ("arm").
 func (c *compilerContext) archFamily() string {
-	arch := strings.Split(c.Triple, "-")[0]
-	if strings.HasPrefix(arch, "arm64") {
-		return "aarch64"
-	}
-	if strings.HasPrefix(arch, "arm") || strings.HasPrefix(arch, "thumb") {
-		return "arm"
-	}
-	if arch == "mipsel" {
-		return "mips"
-	}
-	return arch
+	return compileopts.CanonicalArchName(c.Triple)
 }
 
 // isThumb returns whether we're in ARM or in Thumb mode. It panics if the

compiler/llvmutil/llvm.go

@@ -8,6 +8,7 @@
 package llvmutil
 
 import (
+	"encoding/binary"
 	"strconv"
 	"strings"
 
@@ -207,7 +208,7 @@ func AppendToGlobal(mod llvm.Module, globalName string, values ...llvm.Value) {
 	used.SetLinkage(llvm.AppendingLinkage)
 }
 
-// Return the LLVM major version.
+// Version returns the LLVM major version.
 func Version() int {
 	majorStr := strings.Split(llvm.Version, ".")[0]
 	major, err := strconv.Atoi(majorStr)
@@ -216,3 +217,13 @@ func Version() int {
 	}
 	return major
 }
+
+// Return the byte order for the given target triple. Most targets are little
+// endian, but for example MIPS can be big-endian.
+func ByteOrder(target string) binary.ByteOrder {
+	if strings.HasPrefix(target, "mips-") {
+		return binary.BigEndian
+	} else {
+		return binary.LittleEndian
+	}
+}

compiler/map.go

@@ -326,7 +326,7 @@ func (b *builder) zeroUndefBytes(llvmType llvm.Type, ptr llvm.Value) error {
 			if i < numFields-1 {
 				nextOffset = b.targetData.ElementOffset(llvmStructType, i+1)
 			} else {
-				// Last field?  Next offset is the total size of the allcoate struct.
+				// Last field?  Next offset is the total size of the allocate struct.
 				nextOffset = b.targetData.TypeAllocSize(llvmStructType)
 			}
 

compiler/symbol.go

@@ -139,6 +139,8 @@ func (c *compilerContext) getFunction(fn *ssa.Function) (llvm.Type, llvm.Value)
 		// On *nix systems, the "abort" functuion in libc is used to handle fatal panics.
 		// Mark it as noreturn so LLVM can optimize away code.
 		llvmFn.AddFunctionAttr(c.ctx.CreateEnumAttribute(llvm.AttributeKindID("noreturn"), 0))
+	case "internal/abi.NoEscape":
+		llvmFn.AddAttributeAtIndex(1, c.ctx.CreateEnumAttribute(llvm.AttributeKindID("nocapture"), 0))
 	case "runtime.alloc":
 		// Tell the optimizer that runtime.alloc is an allocator, meaning that it
 		// returns values that are never null and never alias to an existing value.
@@ -216,7 +218,7 @@ func (c *compilerContext) getFunction(fn *ssa.Function) (llvm.Type, llvm.Value)
 	// should be created right away.
 	// The exception is the package initializer, which does appear in the
 	// *ssa.Package members and so shouldn't be created here.
-	if fn.Synthetic != "" && fn.Synthetic != "package initializer" && fn.Synthetic != "generic function" {
+	if fn.Synthetic != "" && fn.Synthetic != "package initializer" && fn.Synthetic != "generic function" && fn.Synthetic != "range-over-func yield" {
 		irbuilder := c.ctx.NewBuilder()
 		b := newBuilder(c, irbuilder, fn)
 		b.createFunction()
@@ -353,7 +355,7 @@ func (c *compilerContext) checkWasmImport(f *ssa.Function, pragma string) {
 	}
 	if f.Blocks != nil {
 		// Defined functions cannot be exported.
-		c.addError(f.Pos(), fmt.Sprintf("can only use //go:wasmimport on declarations"))
+		c.addError(f.Pos(), "can only use //go:wasmimport on declarations")
 		return
 	}
 	if f.Signature.Results().Len() > 1 {

compiler/syscall.go

@@ -5,6 +5,7 @@ package compiler
 
 import (
 	"strconv"
+	"strings"
 
 	"golang.org/x/tools/go/ssa"
 	"tinygo.org/x/go-llvm"
@@ -145,7 +146,7 @@ func (b *builder) createRawSyscall(call *ssa.CallCommon) (llvm.Value, error) {
 		// Also useful:
 		// https://web.archive.org/web/20220529105937/https://www.linux-mips.org/wiki/Syscall
 		// The syscall number goes in r2, the result also in r2.
-		// Register r7 is both an input paramter and an output parameter: if it
+		// Register r7 is both an input parameter and an output parameter: if it
 		// is non-zero, the system call failed and r2 is the error code.
 		// The code below implements the O32 syscall ABI, not the N32 ABI. It
 		// could implement both at the same time if needed (like what appears to
@@ -329,3 +330,64 @@ func (b *builder) createRawSyscallNoError(call *ssa.CallCommon) (llvm.Value, err
 	retval = b.CreateInsertValue(retval, llvm.ConstInt(b.uintptrType, 0, false), 1, "")
 	return retval, nil
 }
+
+// Lower a call to internal/abi.FuncPCABI0 on MacOS.
+// This function is called like this:
+//
+//	syscall(abi.FuncPCABI0(libc_mkdir_trampoline), uintptr(unsafe.Pointer(_p0)), uintptr(mode), 0)
+//
+// So we'll want to return a function pointer (as uintptr) that points to the
+// libc function. Specifically, we _don't_ want to point to the trampoline
+// function (which is implemented in Go assembly which we can't read), but
+// rather to the actually intended function. For this we're going to assume that
+// all the functions follow a specific pattern: libc_<functionname>_trampoline.
+//
+// The return value is the function pointer as an uintptr, or a nil value if
+// this isn't possible (and a regular call should be made as fallback).
+func (b *builder) createDarwinFuncPCABI0Call(instr *ssa.CallCommon) llvm.Value {
+	if b.GOOS != "darwin" {
+		// This has only been tested on MacOS (and only seems to be used there).
+		return llvm.Value{}
+	}
+
+	// Check that it uses a function call like syscall.libc_*_trampoline
+	itf := instr.Args[0].(*ssa.MakeInterface)
+	calledFn := itf.X.(*ssa.Function)
+	if pkgName := calledFn.Pkg.Pkg.Path(); pkgName != "syscall" && pkgName != "internal/syscall/unix" {
+		return llvm.Value{}
+	}
+	if !strings.HasPrefix(calledFn.Name(), "libc_") || !strings.HasSuffix(calledFn.Name(), "_trampoline") {
+
+		return llvm.Value{}
+	}
+
+	// Extract the libc function name.
+	name := strings.TrimPrefix(strings.TrimSuffix(calledFn.Name(), "_trampoline"), "libc_")
+	if name == "open" {
+		// Special case: open() is a variadic function and can't be called like
+		// a regular function. Therefore, we need to use a wrapper implemented
+		// in C.
+		name = "syscall_libc_open"
+	}
+	if b.GOARCH == "amd64" {
+		if name == "fdopendir" || name == "readdir_r" {
+			// Hack to support amd64, which needs the $INODE64 suffix.
+			// This is also done in upstream Go:
+			// https://github.com/golang/go/commit/096ab3c21b88ccc7d411379d09fe6274e3159467
+			name += "$INODE64"
+		}
+	}
+
+	// Obtain the C function.
+	// Use a simple function (no parameters or return value) because all we need
+	// is the address of the function.
+	llvmFn := b.mod.NamedFunction(name)
+	if llvmFn.IsNil() {
+		llvmFnType := llvm.FunctionType(b.ctx.VoidType(), nil, false)
+		llvmFn = llvm.AddFunction(b.mod, name, llvmFnType)
+	}
+
+	// Cast the function pointer to a uintptr (because that's what
+	// abi.FuncPCABI0 returns).
+	return b.CreatePtrToInt(llvmFn, b.uintptrType, "")
+}

compiler/testdata/goroutine-cortex-m-qemu-tasks.ll

@@ -3,8 +3,6 @@ source_filename = "goroutine.go"
 target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
 target triple = "thumbv7m-unknown-unknown-eabi"
 
-%runtime._string = type { ptr, i32 }
-
 @"main$string" = internal unnamed_addr constant [4 x i8] c"test", align 1
 
 ; Function Attrs: allockind("alloc,zeroed") allocsize(0)
@@ -150,12 +148,12 @@ define hidden void @main.startInterfaceMethod(ptr %itf.typecode, ptr %itf.value,
 entry:
   %0 = call align 4 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr null, ptr undef) #9
   store ptr %itf.value, ptr %0, align 4
-  %1 = getelementptr inbounds { ptr, %runtime._string, ptr }, ptr %0, i32 0, i32 1
+  %1 = getelementptr inbounds { ptr, ptr, i32, ptr }, ptr %0, i32 0, i32 1
   store ptr @"main$string", ptr %1, align 4
-  %.repack1 = getelementptr inbounds { ptr, %runtime._string, ptr }, ptr %0, i32 0, i32 1, i32 1
-  store i32 4, ptr %.repack1, align 4
-  %2 = getelementptr inbounds { ptr, %runtime._string, ptr }, ptr %0, i32 0, i32 2
-  store ptr %itf.typecode, ptr %2, align 4
+  %2 = getelementptr inbounds { ptr, ptr, i32, ptr }, ptr %0, i32 0, i32 2
+  store i32 4, ptr %2, align 4
+  %3 = getelementptr inbounds { ptr, ptr, i32, ptr }, ptr %0, i32 0, i32 3
+  store ptr %itf.typecode, ptr %3, align 4
   %stacksize = call i32 @"internal/task.getGoroutineStackSize"(i32 ptrtoint (ptr @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), ptr undef) #9
   call void @"internal/task.start"(i32 ptrtoint (ptr @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), ptr nonnull %0, i32 %stacksize, ptr undef) #9
   ret void

compiler/testdata/goroutine-wasm-asyncify.ll

@@ -3,8 +3,6 @@ source_filename = "goroutine.go"
 target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-n32:64-S128-ni:1:10:20"
 target triple = "wasm32-unknown-wasi"
 
-%runtime._string = type { ptr, i32 }
-
 @"main$string" = internal unnamed_addr constant [4 x i8] c"test", align 1
 
 ; Function Attrs: allockind("alloc,zeroed") allocsize(0)
@@ -161,12 +159,12 @@ entry:
   %0 = call align 4 dereferenceable(16) ptr @runtime.alloc(i32 16, ptr null, ptr undef) #9
   call void @runtime.trackPointer(ptr nonnull %0, ptr nonnull %stackalloc, ptr undef) #9
   store ptr %itf.value, ptr %0, align 4
-  %1 = getelementptr inbounds { ptr, %runtime._string, ptr }, ptr %0, i32 0, i32 1
+  %1 = getelementptr inbounds { ptr, ptr, i32, ptr }, ptr %0, i32 0, i32 1
   store ptr @"main$string", ptr %1, align 4
-  %.repack1 = getelementptr inbounds { ptr, %runtime._string, ptr }, ptr %0, i32 0, i32 1, i32 1
-  store i32 4, ptr %.repack1, align 4
-  %2 = getelementptr inbounds { ptr, %runtime._string, ptr }, ptr %0, i32 0, i32 2
-  store ptr %itf.typecode, ptr %2, align 4
+  %2 = getelementptr inbounds { ptr, ptr, i32, ptr }, ptr %0, i32 0, i32 2
+  store i32 4, ptr %2, align 4
+  %3 = getelementptr inbounds { ptr, ptr, i32, ptr }, ptr %0, i32 0, i32 3
+  store ptr %itf.typecode, ptr %3, align 4
   call void @"internal/task.start"(i32 ptrtoint (ptr @"interface:{Print:func:{basic:string}{}}.Print$invoke$gowrapper" to i32), ptr nonnull %0, i32 65536, ptr undef) #9
   ret void
 }

diagnostics/diagnostics.go

@@ -43,7 +43,7 @@ func CreateDiagnostics(err error) ProgramDiagnostic {
 	if err == nil {
 		return nil
 	}
-	// Right now, the compiler will only show errors for the first pacakge that
+	// Right now, the compiler will only show errors for the first package that
 	// fails to build. This is likely to change in the future.
 	return ProgramDiagnostic{
 		createPackageDiagnostic(err),
@@ -147,7 +147,7 @@ func createDiagnostics(err error) []Diagnostic {
 					// last package
 					fmt.Fprintln(buf, "\timports", pkgPath+": "+err.Err.Error())
 				} else {
-					// not the last pacakge
+					// not the last package
 					fmt.Fprintln(buf, "\timports", pkgPath)
 				}
 			}

errors_test.go

@@ -7,7 +7,6 @@ import (
 	"regexp"
 	"strings"
 	"testing"
-	"time"
 
 	"github.com/tinygo-org/tinygo/compileopts"
 	"github.com/tinygo-org/tinygo/diagnostics"
@@ -15,38 +14,55 @@ import (
 
 // Test the error messages of the TinyGo compiler.
 func TestErrors(t *testing.T) {
-	for _, name := range []string{
-		"cgo",
-		"compiler",
-		"interp",
-		"loader-importcycle",
-		"loader-invaliddep",
-		"loader-invalidpackage",
-		"loader-nopackage",
-		"optimizer",
-		"syntax",
-		"types",
+	// TODO: nicely formatted error messages for:
+	//   - duplicate symbols in ld.lld (currently only prints bitcode file)
+	type errorTest struct {
+		name   string
+		target string
+	}
+	for _, tc := range []errorTest{
+		{name: "cgo"},
+		{name: "compiler"},
+		{name: "interp"},
+		{name: "linker-flashoverflow", target: "cortex-m-qemu"},
+		{name: "linker-ramoverflow", target: "cortex-m-qemu"},
+		{name: "linker-undefined", target: "darwin/arm64"},
+		{name: "linker-undefined", target: "linux/amd64"},
+		//{name: "linker-undefined", target: "windows/amd64"}, // TODO: no source location
+		{name: "linker-undefined", target: "cortex-m-qemu"},
+		//{name: "linker-undefined", target: "wasip1"}, // TODO: no source location
+		{name: "loader-importcycle"},
+		{name: "loader-invaliddep"},
+		{name: "loader-invalidpackage"},
+		{name: "loader-nopackage"},
+		{name: "optimizer"},
+		{name: "syntax"},
+		{name: "types"},
 	} {
+		name := tc.name
+		if tc.target != "" {
+			name += "#" + tc.target
+		}
+		target := tc.target
+		if target == "" {
+			target = "wasip1"
+		}
 		t.Run(name, func(t *testing.T) {
-			testErrorMessages(t, "./testdata/errors/"+name+".go")
+			options := optionsFromTarget(target, sema)
+			testErrorMessages(t, "./testdata/errors/"+tc.name+".go", &options)
 		})
 	}
 }
 
-func testErrorMessages(t *testing.T, filename string) {
+func testErrorMessages(t *testing.T, filename string, options *compileopts.Options) {
+	t.Parallel()
+
 	// Parse expected error messages.
 	expected := readErrorMessages(t, filename)
 
 	// Try to build a binary (this should fail with an error).
 	tmpdir := t.TempDir()
-	err := Build(filename, tmpdir+"/out", &compileopts.Options{
-		Target:        "wasip1",
-		Semaphore:     sema,
-		InterpTimeout: 180 * time.Second,
-		Debug:         true,
-		VerifyIR:      true,
-		Opt:           "z",
-	})
+	err := Build(filename, tmpdir+"/out", options)
 	if err == nil {
 		t.Fatal("expected to get a compiler error")
 	}

go.mod

@@ -7,14 +7,12 @@ require (
 	github.com/blakesmith/ar v0.0.0-20150311145944-8bd4349a67f2
 	github.com/chromedp/cdproto v0.0.0-20220113222801-0725d94bb6ee
 	github.com/chromedp/chromedp v0.7.6
-	github.com/client9/misspell v0.3.4
 	github.com/gofrs/flock v0.8.1
 	github.com/google/shlex v0.0.0-20181106134648-c34317bd91bf
 	github.com/inhies/go-bytesize v0.0.0-20220417184213-4913239db9cf
 	github.com/marcinbor85/gohex v0.0.0-20200531091804-343a4b548892
 	github.com/mattn/go-colorable v0.1.13
 	github.com/mattn/go-tty v0.0.4
-	github.com/mgechev/revive v1.3.7
 	github.com/sigurn/crc16 v0.0.0-20211026045750-20ab5afb07e3
 	go.bug.st/serial v1.6.0
 	golang.org/x/net v0.26.0
@@ -25,23 +23,14 @@ require (
 )
 
 require (
-	github.com/BurntSushi/toml v1.3.2 // indirect
-	github.com/chavacava/garif v0.1.0 // indirect
 	github.com/chromedp/sysutil v1.0.0 // indirect
 	github.com/creack/goselect v0.1.2 // indirect
-	github.com/fatih/color v1.16.0 // indirect
-	github.com/fatih/structtag v1.2.0 // indirect
 	github.com/gobwas/httphead v0.1.0 // indirect
 	github.com/gobwas/pool v0.2.1 // indirect
 	github.com/gobwas/ws v1.1.0 // indirect
 	github.com/josharian/intern v1.0.0 // indirect
 	github.com/mailru/easyjson v0.7.7 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	github.com/mattn/go-runewidth v0.0.9 // indirect
-	github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517 // indirect
-	github.com/mitchellh/go-homedir v1.1.0 // indirect
-	github.com/olekukonko/tablewriter v0.0.5 // indirect
-	github.com/pkg/errors v0.9.1 // indirect
-	github.com/spf13/afero v1.11.0 // indirect
+	github.com/stretchr/testify v1.8.4 // indirect
 	golang.org/x/text v0.16.0 // indirect
 )

go.sum

@@ -1,11 +1,7 @@
-github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8=
-github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
 github.com/aykevl/go-wasm v0.0.2-0.20240312204833-50275154210c h1:4T0Vj1UkGgcpkRrmn7SbokebnlfxJcMZPgWtOYACAAA=
 github.com/aykevl/go-wasm v0.0.2-0.20240312204833-50275154210c/go.mod h1:7sXyiaA0WtSogCu67R2252fQpVmJMh9JWJ9ddtGkpWw=
 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/chavacava/garif v0.1.0 h1:2JHa3hbYf5D9dsgseMKAmc/MZ109otzgNFk5s87H9Pc=
-github.com/chavacava/garif v0.1.0/go.mod h1:XMyYCkEL58DF0oyW4qDjjnPWONs2HBqYKI+UIPD+Gww=
 github.com/chromedp/cdproto v0.0.0-20211126220118-81fa0469ad77/go.mod h1:At5TxYYdxkbQL0TSefRjhLE3Q0lgvqKKMSFUglJ7i1U=
 github.com/chromedp/cdproto v0.0.0-20220113222801-0725d94bb6ee h1:+SFdIVfQpG0s0DHYzou0kgfE0n0ZjKPwbiRJsXrZegU=
 github.com/chromedp/cdproto v0.0.0-20220113222801-0725d94bb6ee/go.mod h1:At5TxYYdxkbQL0TSefRjhLE3Q0lgvqKKMSFUglJ7i1U=
@@ -13,17 +9,10 @@ github.com/chromedp/chromedp v0.7.6 h1:2juGaktzjwULlsn+DnvIZXFUckEp5xs+GOBroaea+
 github.com/chromedp/chromedp v0.7.6/go.mod h1:ayT4YU/MGAALNfOg9gNrpGSAdnU51PMx+FCeuT1iXzo=
 github.com/chromedp/sysutil v1.0.0 h1:+ZxhTpfpZlmchB58ih/LBHX52ky7w2VhQVKQMucy3Ic=
 github.com/chromedp/sysutil v1.0.0/go.mod h1:kgWmDdq8fTzXYcKIBqIYvRRTnYb9aNS9moAV0xufSww=
-github.com/client9/misspell v0.3.4 h1:ta993UF76GwbvJcIo3Y68y/M3WxlpEHPWIGDkJYwzJI=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/creack/goselect v0.1.2 h1:2DNy14+JPjRBgPzAd1thbQp4BSIihxcBf0IXhQXDRa0=
 github.com/creack/goselect v0.1.2/go.mod h1:a/NhLweNvqIYMuxcMOuWY516Cimucms3DglDzQP3hKY=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/fatih/color v1.16.0 h1:zmkK9Ngbjj+K0yRhTVONQh1p/HknKYSlNT+vZCzyokM=
-github.com/fatih/color v1.16.0/go.mod h1:fL2Sau1YI5c0pdGEVCbKQbLXB6edEj1ZgiY4NijnWvE=
-github.com/fatih/structtag v1.2.0 h1:/OdNE99OxoI/PqaW/SuSK9uxxT3f/tcSZgon/ssNSx4=
-github.com/fatih/structtag v1.2.0/go.mod h1:mBJUNpUnHmRKrKlQQlmCrh5PuhftFbNv8Ys4/aAZl94=
 github.com/gobwas/httphead v0.1.0 h1:exrUm0f4YX0L7EBwZHuCF4GDp8aJfVeBrlLQrs6NqWU=
 github.com/gobwas/httphead v0.1.0/go.mod h1:O/RXo79gxV8G+RqlR/otEwx4Q36zl9rqC5u12GKvMCM=
 github.com/gobwas/pool v0.2.1 h1:xfeeEhW7pwmX8nuLVlqbzVc7udMDrwetjEv+TZIz1og=
@@ -51,41 +40,24 @@ github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/
 github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
 github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-runewidth v0.0.7/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
-github.com/mattn/go-runewidth v0.0.9 h1:Lm995f3rfxdpd6TSmuVCHVb/QhupuXlYr8sCI/QdE+0=
-github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
 github.com/mattn/go-tty v0.0.4 h1:NVikla9X8MN0SQAqCYzpGyXv0jY7MNl3HOWD2dkle7E=
 github.com/mattn/go-tty v0.0.4/go.mod h1:u5GGXBtZU6RQoKV8gY5W6UhMudbR5vXnUe7j3pxse28=
-github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517 h1:zpIH83+oKzcpryru8ceC6BxnoG8TBrhgAvRg8obzup0=
-github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517/go.mod h1:KQ7+USdGKfpPjXk4Ga+5XxQM4Lm4e3gAogrreFAYpOg=
-github.com/mgechev/revive v1.3.7 h1:502QY0vQGe9KtYJ9FpxMz9rL+Fc/P13CI5POL4uHCcE=
-github.com/mgechev/revive v1.3.7/go.mod h1:RJ16jUbF0OWC3co/+XTxmFNgEpUPwnnA0BRllX2aDNA=
-github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
-github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
-github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
-github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
 github.com/orisano/pixelmatch v0.0.0-20210112091706-4fa4c7ba91d5 h1:1SoBaSPudixRecmlHXb/GxmaD3fLMtHIDN13QujwQuc=
 github.com/orisano/pixelmatch v0.0.0-20210112091706-4fa4c7ba91d5/go.mod h1:nZgzbfBr3hhjoZnS66nKrHmduYNpc34ny7RK4z5/HM0=
-github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
-github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/sigurn/crc16 v0.0.0-20211026045750-20ab5afb07e3 h1:aQKxg3+2p+IFXXg97McgDGT5zcMrQoi0EICZs8Pgchs=
 github.com/sigurn/crc16 v0.0.0-20211026045750-20ab5afb07e3/go.mod h1:9/etS5gpQq9BJsJMWg1wpLbfuSnkm8dPF6FdW2JXVhA=
-github.com/spf13/afero v1.11.0 h1:WJQKhtpdm3v2IzqG8VMqrr6Rf3UYpEF239Jy9wNepM8=
-github.com/spf13/afero v1.11.0/go.mod h1:GH9Y3pIexgf1MTIWtNGyogA5MwRIDXGUr+hbWNoBjkY=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
-github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
-github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 go.bug.st/serial v1.6.0 h1:mAbRGN4cKE2J5gMwsMHC2KQisdLRQssO9WSM+rbZJ8A=
 go.bug.st/serial v1.6.0/go.mod h1:UABfsluHAiaNI+La2iESysd9Vetq7VRdpxvjx7CmmOE=
 golang.org/x/mod v0.18.0 h1:5+9lSbEzPSdWkH32vYPBwEpX8KwDbM52Ud9xBUvNlb0=
+golang.org/x/mod v0.18.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
 golang.org/x/net v0.26.0 h1:soB7SVo0PWrY4vPW/+ay0jKDNScG2X9wFeYlXIvJsOQ=
 golang.org/x/net v0.26.0/go.mod h1:5YKkiSynbBIh3p6iOc/vibscux0x38BZDkn8sCUPxHE=
 golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
+golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20191008105621-543471e840be/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -103,7 +75,6 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 tinygo.org/x/go-llvm v0.0.0-20240627184919-3b50c76783a8 h1:bLsZXRUBavt++CJlMN7sppNziqu3LyamESLhFJcpqFQ=

goenv/goenv.go

@@ -30,8 +30,11 @@ var Keys = []string{
 }
 
 func init() {
-	if Get("GOARCH") == "arm" {
+	switch Get("GOARCH") {
+	case "arm":
 		Keys = append(Keys, "GOARM")
+	case "mips", "mipsle":
+		Keys = append(Keys, "GOMIPS")
 	}
 }
 
@@ -128,6 +131,13 @@ func Get(name string) string {
 		// difference between ARMv6 and ARMv7. ARMv6 binaries are much smaller,
 		// especially when floating point instructions are involved.
 		return "6"
+	case "GOMIPS":
+		gomips := os.Getenv("GOMIPS")
+		if gomips == "" {
+			// Default to hardfloat (this matches the Go toolchain).
+			gomips = "hardfloat"
+		}
+		return gomips
 	case "GOROOT":
 		readGoEnvVars()
 		return goEnvVars.GOROOT

goenv/version.go

@@ -9,7 +9,7 @@ import (
 
 // Version of TinyGo.
 // Update this value before release of new version of software.
-const version = "0.33.0-dev"
+const version = "0.34.0-dev"
 
 var (
 	// This variable is set at build time using -ldflags parameters.

internal/tools/go.mod

@@ -0,0 +1,30 @@
+// TODO: remove this (by merging it into the top-level go.mod)
+// once the top level go.mod specifies a go new enough to make our version of misspell happy.
+
+module tools
+
+go 1.21
+
+require (
+	github.com/golangci/misspell v0.6.0
+	github.com/mgechev/revive v1.3.9
+)
+
+require (
+	github.com/BurntSushi/toml v1.4.0 // indirect
+	github.com/chavacava/garif v0.1.0 // indirect
+	github.com/fatih/color v1.17.0 // indirect
+	github.com/fatih/structtag v1.2.0 // indirect
+	github.com/hashicorp/go-version v1.7.0 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/mattn/go-runewidth v0.0.9 // indirect
+	github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517 // indirect
+	github.com/mitchellh/go-homedir v1.1.0 // indirect
+	github.com/olekukonko/tablewriter v0.0.5 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/spf13/afero v1.11.0 // indirect
+	golang.org/x/sys v0.22.0 // indirect
+	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/tools v0.23.0 // indirect
+)

internal/tools/go.sum

@@ -0,0 +1,56 @@
+github.com/BurntSushi/toml v1.4.0 h1:kuoIxZQy2WRRk1pttg9asf+WVv6tWQuBNVmK8+nqPr0=
+github.com/BurntSushi/toml v1.4.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
+github.com/chavacava/garif v0.1.0 h1:2JHa3hbYf5D9dsgseMKAmc/MZ109otzgNFk5s87H9Pc=
+github.com/chavacava/garif v0.1.0/go.mod h1:XMyYCkEL58DF0oyW4qDjjnPWONs2HBqYKI+UIPD+Gww=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fatih/color v1.17.0 h1:GlRw1BRJxkpqUCBKzKOw098ed57fEsKeNjpTe3cSjK4=
+github.com/fatih/color v1.17.0/go.mod h1:YZ7TlrGPkiz6ku9fK3TLD/pl3CpsiFyu8N92HLgmosI=
+github.com/fatih/structtag v1.2.0 h1:/OdNE99OxoI/PqaW/SuSK9uxxT3f/tcSZgon/ssNSx4=
+github.com/fatih/structtag v1.2.0/go.mod h1:mBJUNpUnHmRKrKlQQlmCrh5PuhftFbNv8Ys4/aAZl94=
+github.com/golangci/misspell v0.6.0 h1:JCle2HUTNWirNlDIAUO44hUsKhOFqGPoC4LZxlaSXDs=
+github.com/golangci/misspell v0.6.0/go.mod h1:keMNyY6R9isGaSAu+4Q8NMBwMPkh15Gtc8UCVoDtAWo=
+github.com/hashicorp/go-version v1.7.0 h1:5tqGy27NaOTB8yJKUZELlFAS/LTKJkrmONwQKeRZfjY=
+github.com/hashicorp/go-version v1.7.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
+github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
+github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
+github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/mattn/go-runewidth v0.0.9 h1:Lm995f3rfxdpd6TSmuVCHVb/QhupuXlYr8sCI/QdE+0=
+github.com/mattn/go-runewidth v0.0.9/go.mod h1:H031xJmbD/WCDINGzjvQ9THkh0rPKHF+m2gUSrubnMI=
+github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517 h1:zpIH83+oKzcpryru8ceC6BxnoG8TBrhgAvRg8obzup0=
+github.com/mgechev/dots v0.0.0-20210922191527-e955255bf517/go.mod h1:KQ7+USdGKfpPjXk4Ga+5XxQM4Lm4e3gAogrreFAYpOg=
+github.com/mgechev/revive v1.3.9 h1:18Y3R4a2USSBF+QZKFQwVkBROUda7uoBlkEuBD+YD1A=
+github.com/mgechev/revive v1.3.9/go.mod h1:+uxEIr5UH0TjXWHTno3xh4u7eg6jDpXKzQccA9UGhHU=
+github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
+github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
+github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
+github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
+github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/spf13/afero v1.11.0 h1:WJQKhtpdm3v2IzqG8VMqrr6Rf3UYpEF239Jy9wNepM8=
+github.com/spf13/afero v1.11.0/go.mod h1:GH9Y3pIexgf1MTIWtNGyogA5MwRIDXGUr+hbWNoBjkY=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI=
+golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/tools v0.23.0 h1:SGsXPZ+2l4JsgaCKkx+FQ9YZ5XEtA1GZYuoDjenLjvg=
+golang.org/x/tools v0.23.0/go.mod h1:pnu6ufv6vQkll6szChhK3C3L/ruaIv5eBeztNG8wtsI=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/tools/tools.go

@@ -5,9 +5,9 @@
 package tools
 
 import (
-	_ "github.com/client9/misspell"
+	_ "github.com/golangci/misspell"
 	_ "github.com/mgechev/revive"
 )
 
-//go:generate go install github.com/client9/misspell/cmd/misspell
+//go:generate go install github.com/golangci/misspell/cmd/misspell
 //go:generate go install github.com/mgechev/revive

internal/wasm-tools/go.mod

@@ -2,11 +2,11 @@ module github.com/tinygo-org/tinygo/internal/tools
 
 go 1.22.4
 
-require github.com/ydnar/wasm-tools-go v0.1.4
+require github.com/bytecodealliance/wasm-tools-go v0.2.0
 
 require (
 	github.com/coreos/go-semver v0.3.1 // indirect
 	github.com/urfave/cli/v3 v3.0.0-alpha9 // indirect
 	github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect
-	golang.org/x/mod v0.19.0 // indirect
+	golang.org/x/mod v0.21.0 // indirect
 )

internal/wasm-tools/go.sum

@@ -1,3 +1,5 @@
+github.com/bytecodealliance/wasm-tools-go v0.2.0 h1:JdmiZew7ewHjf+ZGGRE4gZM85Ad/PGW/5I57hepEOjQ=
+github.com/bytecodealliance/wasm-tools-go v0.2.0/go.mod h1:2GnJCUlcDrslZ/L6+yYqoUnewDlBvqRS2N/0NW9ro6w=
 github.com/coreos/go-semver v0.3.1 h1:yi21YpKnrx1gt5R+la8n5WgS0kCrsPp33dmEyHReZr4=
 github.com/coreos/go-semver v0.3.1/go.mod h1:irMmmIw/7yzSRPWryHsK7EYSg09caPQL03VsM8rvUec=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -12,14 +14,12 @@ github.com/urfave/cli/v3 v3.0.0-alpha9 h1:P0RMy5fQm1AslQS+XCmy9UknDXctOmG/q/FZkU
 github.com/urfave/cli/v3 v3.0.0-alpha9/go.mod h1:0kK/RUFHyh+yIKSfWxwheGndfnrvYSmYFVeKCh03ZUc=
 github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 h1:bAn7/zixMGCfxrRTfdpNzjtPYqr8smhKouy9mxVdGPU=
 github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673/go.mod h1:N3UwUGtsrSj3ccvlPHLoLsHnpR27oXr4ZE984MbSER8=
-github.com/ydnar/wasm-tools-go v0.1.4 h1:+25WqBj0AhLx8OFvZvrs7bQO6L3WtQ7t6JzQEYsXQb8=
-github.com/ydnar/wasm-tools-go v0.1.4/go.mod h1:lQfv2Tde3tRgZDSYriro0EmdSHzP1mrHPMmYNahSS/g=
-golang.org/x/mod v0.19.0 h1:fEdghXQSo20giMthA7cd28ZC+jts4amQ3YMXiP5oMQ8=
-golang.org/x/mod v0.19.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
-golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
-golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/tools v0.23.0 h1:SGsXPZ+2l4JsgaCKkx+FQ9YZ5XEtA1GZYuoDjenLjvg=
-golang.org/x/tools v0.23.0/go.mod h1:pnu6ufv6vQkll6szChhK3C3L/ruaIv5eBeztNG8wtsI=
+golang.org/x/mod v0.21.0 h1:vvrHzRwRfVKSiLrG+d4FMl/Qi4ukBCE6kZlTUkDYRT0=
+golang.org/x/mod v0.21.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=
+golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
+golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/tools v0.24.0 h1:J1shsA93PJUEVaUSaay7UXAyE8aimq3GW0pjlolpa24=
+golang.org/x/tools v0.24.0/go.mod h1:YhNqVBIfWHdzvTLs0d8LCuMhkKUgSUKldakyV7W/WDQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/wasm-tools/tools.go

@@ -5,7 +5,7 @@
 package tools
 
 import (
-	_ "github.com/ydnar/wasm-tools-go/cmd/wit-bindgen-go"
+	_ "github.com/bytecodealliance/wasm-tools-go/cmd/wit-bindgen-go"
 )
 
-//go:generate go install github.com/ydnar/wasm-tools-go/cmd/wit-bindgen-go
+//go:generate go install github.com/bytecodealliance/wasm-tools-go/cmd/wit-bindgen-go

interp/README.md

@@ -28,7 +28,7 @@ All in all, this design provides several benefits:
     it should be a whole lot faster for loops as it doesn't have to call into
     LLVM (via CGo) for every operation.
 
-As mentioned, this partial evaulator comes in three parts: a compiler, an
+As mentioned, this partial evaluator comes in three parts: a compiler, an
 interpreter, and a memory manager.
 
 ## Compiler

interp/interp.go

@@ -3,11 +3,13 @@
 package interp
 
 import (
+	"encoding/binary"
 	"fmt"
 	"os"
 	"strings"
 	"time"
 
+	"github.com/tinygo-org/tinygo/compiler/llvmutil"
 	"tinygo.org/x/go-llvm"
 )
 
@@ -24,6 +26,7 @@ type runner struct {
 	dataPtrType   llvm.Type                // often used type so created in advance
 	uintptrType   llvm.Type                // equivalent to uintptr in Go
 	maxAlign      int                      // maximum alignment of an object, alignment of runtime.alloc() result
+	byteOrder     binary.ByteOrder         // big-endian or little-endian
 	debug         bool                     // log debug messages
 	pkgName       string                   // package name of the currently executing package
 	functionCache map[llvm.Value]*function // cache of compiled functions
@@ -38,6 +41,7 @@ func newRunner(mod llvm.Module, timeout time.Duration, debug bool) *runner {
 	r := runner{
 		mod:           mod,
 		targetData:    llvm.NewTargetData(mod.DataLayout()),
+		byteOrder:     llvmutil.ByteOrder(mod.Target()),
 		debug:         debug,
 		functionCache: make(map[llvm.Value]*function),
 		objects:       []object{{}},
@@ -52,7 +56,7 @@ func newRunner(mod llvm.Module, timeout time.Duration, debug bool) *runner {
 	return &r
 }
 
-// Dispose deallocates all alloated LLVM resources.
+// Dispose deallocates all allocated LLVM resources.
 func (r *runner) dispose() {
 	r.targetData.Dispose()
 	r.targetData = llvm.TargetData{}

interp/interpreter.go

@@ -173,7 +173,7 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 			case 3:
 				// Conditional branch: [cond, thenBB, elseBB]
 				lastBB = currentBB
-				switch operands[0].Uint() {
+				switch operands[0].Uint(r) {
 				case 1: // true -> thenBB
 					currentBB = int(operands[1].(literalValue).value.(uint32))
 				case 0: // false -> elseBB
@@ -191,12 +191,12 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 			}
 		case llvm.Switch:
 			// Switch statement: [value, defaultLabel, case0, label0, case1, label1, ...]
-			value := operands[0].Uint()
-			targetLabel := operands[1].Uint() // default label
+			value := operands[0].Uint(r)
+			targetLabel := operands[1].Uint(r) // default label
 			// Do a lazy switch by iterating over all cases.
 			for i := 2; i < len(operands); i += 2 {
-				if value == operands[i].Uint() {
-					targetLabel = operands[i+1].Uint()
+				if value == operands[i].Uint(r) {
+					targetLabel = operands[i+1].Uint(r)
 					break
 				}
 			}
@@ -211,7 +211,7 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 			// Select is much like a ternary operator: it picks a result from
 			// the second and third operand based on the boolean first operand.
 			var result value
-			switch operands[0].Uint() {
+			switch operands[0].Uint(r) {
 			case 1:
 				result = operands[1]
 			case 0:
@@ -282,7 +282,7 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 				// by creating a global variable.
 
 				// Get the requested memory size to be allocated.
-				size := operands[1].Uint()
+				size := operands[1].Uint(r)
 
 				// Get the object layout, if it is available.
 				llvmLayoutType := r.getLLVMTypeFromLayout(operands[2])
@@ -318,9 +318,9 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 				//     memmove(dst, src, n*elemSize)
 				//     return int(n)
 				// }
-				dstLen := operands[3].Uint()
-				srcLen := operands[4].Uint()
-				elemSize := operands[5].Uint()
+				dstLen := operands[3].Uint(r)
+				srcLen := operands[4].Uint(r)
+				elemSize := operands[5].Uint(r)
 				n := srcLen
 				if n > dstLen {
 					n = dstLen
@@ -374,7 +374,7 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 				if err != nil {
 					return nil, mem, r.errorAt(inst, err)
 				}
-				nBytes := uint32(operands[3].Uint())
+				nBytes := uint32(operands[3].Uint(r))
 				dstObj := mem.getWritable(dst.index())
 				dstBuf := dstObj.buffer.asRawValue(r)
 				if mem.get(src.index()).buffer == nil {
@@ -661,8 +661,8 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 			// pointer into the underlying object.
 			var offset int64
 			for i := 1; i < len(operands); i += 2 {
-				index := operands[i].Int()
-				elementSize := operands[i+1].Int()
+				index := operands[i].Int(r)
+				elementSize := operands[i+1].Int(r)
 				if elementSize < 0 {
 					// This is a struct field.
 					offset += index
@@ -677,7 +677,7 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 					return nil, mem, r.errorAt(inst, err)
 				}
 				// GEP on fixed pointer value (for example, memory-mapped I/O).
-				ptrValue := operands[0].Uint() + uint64(offset)
+				ptrValue := operands[0].Uint(r) + uint64(offset)
 				locals[inst.localIndex] = makeLiteralInt(ptrValue, int(operands[0].len(r)*8))
 				continue
 			}
@@ -739,11 +739,11 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 			var lhs, rhs float64
 			switch operands[0].len(r) {
 			case 8:
-				lhs = math.Float64frombits(operands[0].Uint())
-				rhs = math.Float64frombits(operands[1].Uint())
+				lhs = math.Float64frombits(operands[0].Uint(r))
+				rhs = math.Float64frombits(operands[1].Uint(r))
 			case 4:
-				lhs = float64(math.Float32frombits(uint32(operands[0].Uint())))
-				rhs = float64(math.Float32frombits(uint32(operands[1].Uint())))
+				lhs = float64(math.Float32frombits(uint32(operands[0].Uint(r))))
+				rhs = float64(math.Float32frombits(uint32(operands[1].Uint(r))))
 			default:
 				panic("unknown float type")
 			}
@@ -782,23 +782,23 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 				if inst.opcode == llvm.Add {
 					// This likely means this is part of a
 					// unsafe.Pointer(uintptr(ptr) + offset) pattern.
-					lhsPtr, err = lhsPtr.addOffset(int64(rhs.Uint()))
+					lhsPtr, err = lhsPtr.addOffset(int64(rhs.Uint(r)))
 					if err != nil {
 						return nil, mem, r.errorAt(inst, err)
 					}
 					locals[inst.localIndex] = lhsPtr
-				} else if inst.opcode == llvm.Xor && rhs.Uint() == 0 {
+				} else if inst.opcode == llvm.Xor && rhs.Uint(r) == 0 {
 					// Special workaround for strings.noescape, see
 					// src/strings/builder.go in the Go source tree. This is
 					// the identity operator, so we can return the input.
 					locals[inst.localIndex] = lhs
-				} else if inst.opcode == llvm.And && rhs.Uint() < 8 {
+				} else if inst.opcode == llvm.And && rhs.Uint(r) < 8 {
 					// This is probably part of a pattern to get the lower bits
 					// of a pointer for pointer tagging, like this:
 					//     uintptr(unsafe.Pointer(t)) & 0b11
 					// We can actually support this easily by ANDing with the
 					// pointer offset.
-					result := uint64(lhsPtr.offset()) & rhs.Uint()
+					result := uint64(lhsPtr.offset()) & rhs.Uint(r)
 					locals[inst.localIndex] = makeLiteralInt(result, int(lhs.len(r)*8))
 				} else {
 					// Catch-all for weird operations that should just be done
@@ -813,31 +813,31 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 			var result uint64
 			switch inst.opcode {
 			case llvm.Add:
-				result = lhs.Uint() + rhs.Uint()
+				result = lhs.Uint(r) + rhs.Uint(r)
 			case llvm.Sub:
-				result = lhs.Uint() - rhs.Uint()
+				result = lhs.Uint(r) - rhs.Uint(r)
 			case llvm.Mul:
-				result = lhs.Uint() * rhs.Uint()
+				result = lhs.Uint(r) * rhs.Uint(r)
 			case llvm.UDiv:
-				result = lhs.Uint() / rhs.Uint()
+				result = lhs.Uint(r) / rhs.Uint(r)
 			case llvm.SDiv:
-				result = uint64(lhs.Int() / rhs.Int())
+				result = uint64(lhs.Int(r) / rhs.Int(r))
 			case llvm.URem:
-				result = lhs.Uint() % rhs.Uint()
+				result = lhs.Uint(r) % rhs.Uint(r)
 			case llvm.SRem:
-				result = uint64(lhs.Int() % rhs.Int())
+				result = uint64(lhs.Int(r) % rhs.Int(r))
 			case llvm.Shl:
-				result = lhs.Uint() << rhs.Uint()
+				result = lhs.Uint(r) << rhs.Uint(r)
 			case llvm.LShr:
-				result = lhs.Uint() >> rhs.Uint()
+				result = lhs.Uint(r) >> rhs.Uint(r)
 			case llvm.AShr:
-				result = uint64(lhs.Int() >> rhs.Uint())
+				result = uint64(lhs.Int(r) >> rhs.Uint(r))
 			case llvm.And:
-				result = lhs.Uint() & rhs.Uint()
+				result = lhs.Uint(r) & rhs.Uint(r)
 			case llvm.Or:
-				result = lhs.Uint() | rhs.Uint()
+				result = lhs.Uint(r) | rhs.Uint(r)
 			case llvm.Xor:
-				result = lhs.Uint() ^ rhs.Uint()
+				result = lhs.Uint(r) ^ rhs.Uint(r)
 			default:
 				panic("unreachable")
 			}
@@ -855,11 +855,11 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 			// and then truncating it as necessary.
 			var value uint64
 			if inst.opcode == llvm.SExt {
-				value = uint64(operands[0].Int())
+				value = uint64(operands[0].Int(r))
 			} else {
-				value = operands[0].Uint()
+				value = operands[0].Uint(r)
 			}
-			bitwidth := operands[1].Uint()
+			bitwidth := operands[1].Uint(r)
 			if r.debug {
 				fmt.Fprintln(os.Stderr, indent+instructionNameMap[inst.opcode]+":", value, bitwidth)
 			}
@@ -868,11 +868,11 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 			var value float64
 			switch inst.opcode {
 			case llvm.SIToFP:
-				value = float64(operands[0].Int())
+				value = float64(operands[0].Int(r))
 			case llvm.UIToFP:
-				value = float64(operands[0].Uint())
+				value = float64(operands[0].Uint(r))
 			}
-			bitwidth := operands[1].Uint()
+			bitwidth := operands[1].Uint(r)
 			if r.debug {
 				fmt.Fprintln(os.Stderr, indent+instructionNameMap[inst.opcode]+":", value, bitwidth)
 			}
@@ -918,21 +918,21 @@ func (r *runner) interpretICmp(lhs, rhs value, predicate llvm.IntPredicate) bool
 		}
 		return result
 	case llvm.IntUGT:
-		return lhs.Uint() > rhs.Uint()
+		return lhs.Uint(r) > rhs.Uint(r)
 	case llvm.IntUGE:
-		return lhs.Uint() >= rhs.Uint()
+		return lhs.Uint(r) >= rhs.Uint(r)
 	case llvm.IntULT:
-		return lhs.Uint() < rhs.Uint()
+		return lhs.Uint(r) < rhs.Uint(r)
 	case llvm.IntULE:
-		return lhs.Uint() <= rhs.Uint()
+		return lhs.Uint(r) <= rhs.Uint(r)
 	case llvm.IntSGT:
-		return lhs.Int() > rhs.Int()
+		return lhs.Int(r) > rhs.Int(r)
 	case llvm.IntSGE:
-		return lhs.Int() >= rhs.Int()
+		return lhs.Int(r) >= rhs.Int(r)
 	case llvm.IntSLT:
-		return lhs.Int() < rhs.Int()
+		return lhs.Int(r) < rhs.Int(r)
 	case llvm.IntSLE:
-		return lhs.Int() <= rhs.Int()
+		return lhs.Int(r) <= rhs.Int(r)
 	default:
 		// _should_ be unreachable, until LLVM adds new icmp operands (unlikely)
 		panic("interp: unsupported icmp")

interp/memory.go

@@ -361,8 +361,8 @@ type value interface {
 	clone() value
 	asPointer(*runner) (pointerValue, error)
 	asRawValue(*runner) rawValue
-	Uint() uint64
-	Int() int64
+	Uint(*runner) uint64
+	Int(*runner) int64
 	toLLVMValue(llvm.Type, *memoryView) (llvm.Value, error)
 	String() string
 }
@@ -405,7 +405,8 @@ func (v literalValue) len(r *runner) uint32 {
 }
 
 func (v literalValue) String() string {
-	return strconv.FormatInt(v.Int(), 10)
+	// Note: passing a nil *runner to v.Int because we know it won't use it.
+	return strconv.FormatInt(v.Int(nil), 10)
 }
 
 func (v literalValue) clone() value {
@@ -421,13 +422,13 @@ func (v literalValue) asRawValue(r *runner) rawValue {
 	switch value := v.value.(type) {
 	case uint64:
 		buf = make([]byte, 8)
-		binary.LittleEndian.PutUint64(buf, value)
+		r.byteOrder.PutUint64(buf, value)
 	case uint32:
 		buf = make([]byte, 4)
-		binary.LittleEndian.PutUint32(buf, uint32(value))
+		r.byteOrder.PutUint32(buf, uint32(value))
 	case uint16:
 		buf = make([]byte, 2)
-		binary.LittleEndian.PutUint16(buf, uint16(value))
+		r.byteOrder.PutUint16(buf, uint16(value))
 	case uint8:
 		buf = []byte{uint8(value)}
 	default:
@@ -440,7 +441,7 @@ func (v literalValue) asRawValue(r *runner) rawValue {
 	return raw
 }
 
-func (v literalValue) Uint() uint64 {
+func (v literalValue) Uint(r *runner) uint64 {
 	switch value := v.value.(type) {
 	case uint64:
 		return value
@@ -455,7 +456,7 @@ func (v literalValue) Uint() uint64 {
 	}
 }
 
-func (v literalValue) Int() int64 {
+func (v literalValue) Int(r *runner) int64 {
 	switch value := v.value.(type) {
 	case uint64:
 		return int64(value)
@@ -553,11 +554,11 @@ func (v pointerValue) asRawValue(r *runner) rawValue {
 	return rv
 }
 
-func (v pointerValue) Uint() uint64 {
+func (v pointerValue) Uint(r *runner) uint64 {
 	panic("cannot convert pointer to integer")
 }
 
-func (v pointerValue) Int() int64 {
+func (v pointerValue) Int(r *runner) int64 {
 	panic("cannot convert pointer to integer")
 }
 
@@ -702,7 +703,12 @@ func (v rawValue) String() string {
 		}
 		// Format as number if none of the buf is a pointer.
 		if !v.hasPointer() {
-			return strconv.FormatInt(v.Int(), 10)
+			// Construct a fake runner, which is little endian.
+			// We only use String() for debugging, so this is is good enough
+			// (the printed value will just be slightly wrong when debugging the
+			// interp package with GOOS=mips for example).
+			r := &runner{byteOrder: binary.LittleEndian}
+			return strconv.FormatInt(v.Int(r), 10)
 		}
 	}
 	return "<[…" + strconv.Itoa(len(v.buf)) + "]>"
@@ -738,33 +744,33 @@ func (v rawValue) bytes() []byte {
 	return buf
 }
 
-func (v rawValue) Uint() uint64 {
+func (v rawValue) Uint(r *runner) uint64 {
 	buf := v.bytes()
 
 	switch len(v.buf) {
 	case 1:
 		return uint64(buf[0])
 	case 2:
-		return uint64(binary.LittleEndian.Uint16(buf))
+		return uint64(r.byteOrder.Uint16(buf))
 	case 4:
-		return uint64(binary.LittleEndian.Uint32(buf))
+		return uint64(r.byteOrder.Uint32(buf))
 	case 8:
-		return binary.LittleEndian.Uint64(buf)
+		return r.byteOrder.Uint64(buf)
 	default:
 		panic("unknown integer size")
 	}
 }
 
-func (v rawValue) Int() int64 {
+func (v rawValue) Int(r *runner) int64 {
 	switch len(v.buf) {
 	case 1:
-		return int64(int8(v.Uint()))
+		return int64(int8(v.Uint(r)))
 	case 2:
-		return int64(int16(v.Uint()))
+		return int64(int16(v.Uint(r)))
 	case 4:
-		return int64(int32(v.Uint()))
+		return int64(int32(v.Uint(r)))
 	case 8:
-		return int64(int64(v.Uint()))
+		return int64(int64(v.Uint(r)))
 	default:
 		panic("unknown integer size")
 	}
@@ -878,11 +884,11 @@ func (v rawValue) toLLVMValue(llvmType llvm.Type, mem *memoryView) (llvm.Value,
 		var n uint64
 		switch llvmType.IntTypeWidth() {
 		case 64:
-			n = rawValue{v.buf[:8]}.Uint()
+			n = rawValue{v.buf[:8]}.Uint(mem.r)
 		case 32:
-			n = rawValue{v.buf[:4]}.Uint()
+			n = rawValue{v.buf[:4]}.Uint(mem.r)
 		case 16:
-			n = rawValue{v.buf[:2]}.Uint()
+			n = rawValue{v.buf[:2]}.Uint(mem.r)
 		case 8:
 			n = uint64(v.buf[0])
 		case 1:
@@ -951,7 +957,7 @@ func (v rawValue) toLLVMValue(llvmType llvm.Type, mem *memoryView) (llvm.Value,
 		}
 		// This is either a null pointer or a raw pointer for memory-mapped I/O
 		// (such as 0xe000ed00).
-		ptr := rawValue{v.buf[:mem.r.pointerSize]}.Uint()
+		ptr := rawValue{v.buf[:mem.r.pointerSize]}.Uint(mem.r)
 		if ptr == 0 {
 			// Null pointer.
 			return llvm.ConstNull(llvmType), nil
@@ -969,11 +975,11 @@ func (v rawValue) toLLVMValue(llvmType llvm.Type, mem *memoryView) (llvm.Value,
 		}
 		return llvm.ConstIntToPtr(ptrValue, llvmType), nil
 	case llvm.DoubleTypeKind:
-		b := rawValue{v.buf[:8]}.Uint()
+		b := rawValue{v.buf[:8]}.Uint(mem.r)
 		f := math.Float64frombits(b)
 		return llvm.ConstFloat(llvmType, f), nil
 	case llvm.FloatTypeKind:
-		b := uint32(rawValue{v.buf[:4]}.Uint())
+		b := uint32(rawValue{v.buf[:4]}.Uint(mem.r))
 		f := math.Float32frombits(b)
 		return llvm.ConstFloat(llvmType, float64(f)), nil
 	default:
@@ -1065,19 +1071,19 @@ func (v *rawValue) set(llvmValue llvm.Value, r *runner) {
 			switch llvmValue.Type().IntTypeWidth() {
 			case 64:
 				var buf [8]byte
-				binary.LittleEndian.PutUint64(buf[:], n)
+				r.byteOrder.PutUint64(buf[:], n)
 				for i, b := range buf {
 					v.buf[i] = uint64(b)
 				}
 			case 32:
 				var buf [4]byte
-				binary.LittleEndian.PutUint32(buf[:], uint32(n))
+				r.byteOrder.PutUint32(buf[:], uint32(n))
 				for i, b := range buf {
 					v.buf[i] = uint64(b)
 				}
 			case 16:
 				var buf [2]byte
-				binary.LittleEndian.PutUint16(buf[:], uint16(n))
+				r.byteOrder.PutUint16(buf[:], uint16(n))
 				for i, b := range buf {
 					v.buf[i] = uint64(b)
 				}
@@ -1109,14 +1115,14 @@ func (v *rawValue) set(llvmValue llvm.Value, r *runner) {
 		case llvm.DoubleTypeKind:
 			f, _ := llvmValue.DoubleValue()
 			var buf [8]byte
-			binary.LittleEndian.PutUint64(buf[:], math.Float64bits(f))
+			r.byteOrder.PutUint64(buf[:], math.Float64bits(f))
 			for i, b := range buf {
 				v.buf[i] = uint64(b)
 			}
 		case llvm.FloatTypeKind:
 			f, _ := llvmValue.DoubleValue()
 			var buf [4]byte
-			binary.LittleEndian.PutUint32(buf[:], math.Float32bits(float32(f)))
+			r.byteOrder.PutUint32(buf[:], math.Float32bits(float32(f)))
 			for i, b := range buf {
 				v.buf[i] = uint64(b)
 			}
@@ -1166,11 +1172,11 @@ func (v localValue) asRawValue(r *runner) rawValue {
 	panic("interp: localValue.asRawValue")
 }
 
-func (v localValue) Uint() uint64 {
+func (v localValue) Uint(r *runner) uint64 {
 	panic("interp: localValue.Uint")
 }
 
-func (v localValue) Int() int64 {
+func (v localValue) Int(r *runner) int64 {
 	panic("interp: localValue.Int")
 }
 
@@ -1254,7 +1260,7 @@ func (r *runner) readObjectLayout(layoutValue value) (uint64, *big.Int) {
 	ptr, err := layoutValue.asPointer(r)
 	if err == errIntegerAsPointer {
 		// It's an integer, which means it's a small object or unknown.
-		layout := layoutValue.Uint()
+		layout := layoutValue.Uint(r)
 		if layout == 0 {
 			// Nil pointer, which means the layout is unknown.
 			return 0, nil
@@ -1287,7 +1293,7 @@ func (r *runner) readObjectLayout(layoutValue value) (uint64, *big.Int) {
 
 	// Read the object size in words and the bitmap from the global.
 	buf := r.objects[ptr.index()].buffer.(rawValue)
-	objectSizeWords := rawValue{buf: buf.buf[:r.pointerSize]}.Uint()
+	objectSizeWords := rawValue{buf: buf.buf[:r.pointerSize]}.Uint(r)
 	rawByteValues := buf.buf[r.pointerSize:]
 	rawBytes := make([]byte, len(rawByteValues))
 	for i, v := range rawByteValues {

loader/goroot.go

@@ -218,7 +218,7 @@ func listGorootMergeLinks(goroot, tinygoroot string, overrides map[string]bool)
 // with the TinyGo version. This is the case on some targets.
 func needsSyscallPackage(buildTags []string) bool {
 	for _, tag := range buildTags {
-		if tag == "baremetal" || tag == "darwin" || tag == "nintendoswitch" || tag == "tinygo.wasm" {
+		if tag == "baremetal" || tag == "nintendoswitch" || tag == "tinygo.wasm" {
 			return true
 		}
 	}
@@ -236,6 +236,7 @@ func pathsToOverride(goMinor int, needsSyscallPackage bool) map[string]bool {
 		"device/":               false,
 		"examples/":             false,
 		"internal/":             true,
+		"internal/abi/":         false,
 		"internal/binary/":      false,
 		"internal/bytealg/":     false,
 		"internal/cm/":          false,
@@ -247,11 +248,11 @@ func pathsToOverride(goMinor int, needsSyscallPackage bool) map[string]bool {
 		"net/":                  true,
 		"net/http/":             false,
 		"os/":                   true,
-		"os/user/":              false,
 		"reflect/":              false,
 		"runtime/":              false,
 		"sync/":                 true,
 		"testing/":              true,
+		"unique/":               false,
 	}
 
 	if goMinor >= 19 {

loader/loader.go

@@ -180,7 +180,7 @@ func Load(config *compileopts.Config, inputPkg string, typeChecker types.Config)
 			if len(fields) >= 2 {
 				// There is some file/line/column information.
 				if n, err := strconv.Atoi(fields[len(fields)-2]); err == nil {
-					// Format: filename.go:line:colum
+					// Format: filename.go:line:column
 					pos.Filename = strings.Join(fields[:len(fields)-2], ":")
 					pos.Line = n
 					pos.Column, _ = strconv.Atoi(fields[len(fields)-1])

main.go

@@ -305,13 +305,11 @@ func Test(pkgName string, stdout, stderr io.Writer, options *compileopts.Options
 			//
 			// Ex. run --dir=.. --dir=../.. --dir=../../..
 			var dirs []string
-			switch config.Options.Target {
+			switch config.Target.GOOS {
 			case "wasip1":
 				dirs = dirsToModuleRootRel(result.MainDir, result.ModuleRoot)
-			case "wasip2":
-				dirs = dirsToModuleRootAbs(result.MainDir, result.ModuleRoot)
 			default:
-				return fmt.Errorf("unknown GOOS target: %v", config.Options.Target)
+				dirs = dirsToModuleRootAbs(result.MainDir, result.ModuleRoot)
 			}
 
 			args := []string{"run"}
@@ -808,7 +806,7 @@ func Run(pkgName string, options *compileopts.Options, cmdArgs []string) error {
 
 // buildAndRun builds and runs the given program, writing output to stdout and
 // errors to os.Stderr. It takes care of emulators (qemu, wasmtime, etc) and
-// passes command line arguments and evironment variables in a way appropriate
+// passes command line arguments and environment variables in a way appropriate
 // for the given emulator.
 func buildAndRun(pkgName string, config *compileopts.Config, stdout io.Writer, cmdArgs, environmentVars []string, timeout time.Duration, run func(cmd *exec.Cmd, result builder.BuildResult) error) (builder.BuildResult, error) {
 
@@ -936,7 +934,7 @@ func buildAndRun(pkgName string, config *compileopts.Config, stdout io.Writer, c
 
 	// Configure stdout/stderr. The stdout may go to a buffer, not a real
 	// stdout.
-	cmd.Stdout = stdout
+	cmd.Stdout = newOutputWriter(stdout, result.Executable)
 	cmd.Stderr = os.Stderr
 	if config.EmulatorName() == "simavr" {
 		cmd.Stdout = nil // don't print initial load commands
@@ -958,7 +956,7 @@ func buildAndRun(pkgName string, config *compileopts.Config, stdout io.Writer, c
 	err = run(cmd, result)
 	if err != nil {
 		if ctx != nil && ctx.Err() == context.DeadlineExceeded {
-			stdout.Write([]byte(fmt.Sprintf("--- timeout of %s exceeded, terminating...\n", timeout)))
+			fmt.Fprintf(stdout, "--- timeout of %s exceeded, terminating...\n", timeout)
 			err = ctx.Err()
 		}
 		return result, &commandError{"failed to run compiled binary", result.Binary, err}
@@ -1437,7 +1435,7 @@ func main() {
 		flag.BoolVar(&flagTest, "test", false, "supply -test flag to go list")
 	}
 	var outpath string
-	if command == "help" || command == "build" || command == "build-library" || command == "test" {
+	if command == "help" || command == "build" || command == "test" {
 		flag.StringVar(&outpath, "o", "", "output filename")
 	}
 
@@ -1467,7 +1465,8 @@ func main() {
 	case "clang", "ld.lld", "wasm-ld":
 		err := builder.RunTool(command, os.Args[2:]...)
 		if err != nil {
-			fmt.Fprintln(os.Stderr, err)
+			// The tool should have printed an error message already.
+			// Don't print another error message here.
 			os.Exit(1)
 		}
 		os.Exit(0)
@@ -1498,6 +1497,7 @@ func main() {
 		GOOS:            goenv.Get("GOOS"),
 		GOARCH:          goenv.Get("GOARCH"),
 		GOARM:           goenv.Get("GOARM"),
+		GOMIPS:          goenv.Get("GOMIPS"),
 		Target:          *target,
 		StackSize:       stackSize,
 		Opt:             *opt,
@@ -1570,50 +1570,6 @@ func main() {
 
 		err := Build(pkgName, outpath, options)
 		handleCompilerError(err)
-	case "build-library":
-		// Note: this command is only meant to be used while making a release!
-		if outpath == "" {
-			fmt.Fprintln(os.Stderr, "No output filename supplied (-o).")
-			usage(command)
-			os.Exit(1)
-		}
-		if *target == "" {
-			fmt.Fprintln(os.Stderr, "No target (-target).")
-		}
-		if flag.NArg() != 1 {
-			fmt.Fprintf(os.Stderr, "Build-library only accepts exactly one library name as argument, %d given\n", flag.NArg())
-			usage(command)
-			os.Exit(1)
-		}
-		var lib *builder.Library
-		switch name := flag.Arg(0); name {
-		case "compiler-rt":
-			lib = &builder.CompilerRT
-		case "picolibc":
-			lib = &builder.Picolibc
-		default:
-			fmt.Fprintf(os.Stderr, "Unknown library: %s\n", name)
-			os.Exit(1)
-		}
-		tmpdir, err := os.MkdirTemp("", "tinygo*")
-		if err != nil {
-			handleCompilerError(err)
-		}
-		defer os.RemoveAll(tmpdir)
-		spec, err := compileopts.LoadTarget(options)
-		if err != nil {
-			handleCompilerError(err)
-		}
-		config := &compileopts.Config{
-			Options: options,
-			Target:  spec,
-		}
-		path, err := lib.Load(config, tmpdir)
-		handleCompilerError(err)
-		err = copyFile(path, outpath)
-		if err != nil {
-			handleCompilerError(err)
-		}
 	case "flash", "gdb", "lldb":
 		pkgName := filepath.ToSlash(flag.Arg(0))
 		if command == "flash" {
@@ -1673,7 +1629,7 @@ func main() {
 			for i := range bufs {
 				err := bufs[i].flush(os.Stdout, os.Stderr)
 				if err != nil {
-					// There was an error writing to stdout or stderr, so we probbably cannot print this.
+					// There was an error writing to stdout or stderr, so we probably cannot print this.
 					select {
 					case fail <- struct{}{}:
 					default:
@@ -1780,6 +1736,7 @@ func main() {
 				GOOS       string                  `json:"goos"`
 				GOARCH     string                  `json:"goarch"`
 				GOARM      string                  `json:"goarm"`
+				GOMIPS     string                  `json:"gomips"`
 				BuildTags  []string                `json:"build_tags"`
 				GC         string                  `json:"garbage_collector"`
 				Scheduler  string                  `json:"scheduler"`
@@ -1790,6 +1747,7 @@ func main() {
 				GOOS:       config.GOOS(),
 				GOARCH:     config.GOARCH(),
 				GOARM:      config.GOARM(),
+				GOMIPS:     config.GOMIPS(),
 				BuildTags:  config.BuildTags(),
 				GC:         config.GC(),
 				Scheduler:  config.Scheduler(),

main_test.go

@@ -8,7 +8,6 @@ import (
 	"bytes"
 	"errors"
 	"flag"
-	"fmt"
 	"io"
 	"os"
 	"os/exec"
@@ -37,7 +36,7 @@ var supportedLinuxArches = map[string]string{
 	"X86Linux":   "linux/386",
 	"ARMLinux":   "linux/arm/6",
 	"ARM64Linux": "linux/arm64",
-	"MIPSLinux":  "linux/mipsle",
+	"MIPSLinux":  "linux/mips/hardfloat",
 	"WASIp1":     "wasip1/wasm",
 }
 
@@ -98,6 +97,9 @@ func TestBuild(t *testing.T) {
 	if minor >= 22 {
 		tests = append(tests, "go1.22/")
 	}
+	if minor >= 23 {
+		tests = append(tests, "go1.23/")
+	}
 
 	if *testTarget != "" {
 		// This makes it possible to run one specific test (instead of all),
@@ -175,6 +177,15 @@ func TestBuild(t *testing.T) {
 				})
 			}
 		}
+		t.Run("MIPS little-endian", func(t *testing.T) {
+			// Run a single test for GOARCH=mipsle to see whether it works at
+			// all. It is already mostly tested because GOARCH=mips and
+			// GOARCH=mipsle are so similar, but it's good to have an extra test
+			// to be sure.
+			t.Parallel()
+			options := optionsFromOSARCH("linux/mipsle/softfloat", sema)
+			runTest("cgo/", options, t, nil, nil)
+		})
 		t.Run("WebAssembly", func(t *testing.T) {
 			t.Parallel()
 			runPlatTests(optionsFromTarget("wasm", sema), tests, t)
@@ -213,11 +224,18 @@ func runPlatTests(options compileopts.Options, tests []string, t *testing.T) {
 			}
 		}
 		if options.GOOS == "linux" && (options.GOARCH == "mips" || options.GOARCH == "mipsle") {
-			if name == "atomic.go" {
+			if name == "atomic.go" || name == "timers.go" {
 				// 64-bit atomic operations aren't currently supported on MIPS.
 				continue
 			}
 		}
+		if options.GOOS == "linux" && options.GOARCH == "mips" {
+			if name == "cgo/" {
+				// CGo isn't supported yet on big-endian systems (needs updates
+				// to bitfield access methods).
+				continue
+			}
+		}
 		if options.Target == "simavr" {
 			// Not all tests are currently supported on AVR.
 			// Skip the ones that aren't.
@@ -244,6 +262,11 @@ func runPlatTests(options compileopts.Options, tests []string, t *testing.T) {
 				// some compiler changes).
 				continue
 
+			case "timers.go":
+				// Crashes starting with Go 1.23.
+				// Bug: https://github.com/llvm/llvm-project/issues/104032
+				continue
+
 			default:
 			}
 		}
@@ -326,6 +349,7 @@ func optionsFromTarget(target string, sema chan struct{}) compileopts.Options {
 		GOOS:          goenv.Get("GOOS"),
 		GOARCH:        goenv.Get("GOARCH"),
 		GOARM:         goenv.Get("GOARM"),
+		GOMIPS:        goenv.Get("GOMIPS"),
 		Target:        target,
 		Semaphore:     sema,
 		InterpTimeout: 180 * time.Second,
@@ -349,8 +373,11 @@ func optionsFromOSARCH(osarch string, sema chan struct{}) compileopts.Options {
 		VerifyIR:      true,
 		Opt:           "z",
 	}
-	if options.GOARCH == "arm" {
+	switch options.GOARCH {
+	case "arm":
 		options.GOARM = parts[2]
+	case "mips", "mipsle":
+		options.GOMIPS = parts[2]
 	}
 	return options
 }
@@ -696,7 +723,8 @@ func TestMain(m *testing.M) {
 			// Invoke a specific tool.
 			err := builder.RunTool(os.Args[1], os.Args[2:]...)
 			if err != nil {
-				fmt.Fprintln(os.Stderr, err)
+				// The tool should have printed an error message already.
+				// Don't print another error message here.
 				os.Exit(1)
 			}
 			os.Exit(0)

misspell.csv

@@ -0,0 +1,41 @@
+acces,access
+acuire,acquire
+addess,address
+adust,adjust
+allcoate,allocate
+alloated,allocated
+archtecture,architecture
+arcive,archive
+ardiuno,arduino
+beconfigured,be configured
+calcluate,calculate
+colum,column
+configration,configuration
+contants,constants
+cricital,critical
+deffered,deferred
+evaulator,evaluator
+evironment,environment
+freqency,frequency
+frquency,frequency
+implmented,implemented
+interrput,interrupt
+interrut,interrupt
+interupt,interrupt
+measuing,measuring
+numer of,number of
+orignal,original
+overrided,overridden
+poiners,pointers
+poitner,pointer
+probbably,probably
+recogized,recognized
+refection,reflection
+requries,requires
+satisifying,satisfying
+simulataneously,simultaneously
+suggets,suggests
+transmition,transmission
+undefied,undefined
+unecessary,unnecessary
+unsiged,unsigned

monitor.go

@@ -197,31 +197,14 @@ func Monitor(executable, port string, config *compileopts.Config) error {
 
 	go func() {
 		buf := make([]byte, 100*1024)
-		var line []byte
+		writer := newOutputWriter(os.Stdout, executable)
 		for {
 			n, err := serialConn.Read(buf)
 			if err != nil {
 				errCh <- fmt.Errorf("read error: %w", err)
 				return
 			}
-			start := 0
-			for i, c := range buf[:n] {
-				if c == '\n' {
-					os.Stdout.Write(buf[start : i+1])
-					start = i + 1
-					address := extractPanicAddress(line)
-					if address != 0 {
-						loc, err := addressToLine(executable, address)
-						if err == nil && loc.IsValid() {
-							fmt.Printf("[tinygo: panic at %s]\n", loc.String())
-						}
-					}
-					line = line[:0]
-				} else {
-					line = append(line, c)
-				}
-			}
-			os.Stdout.Write(buf[start:n])
+			writer.Write(buf[:n])
 		}
 	}()
 
@@ -400,3 +383,42 @@ func readDWARF(executable string) (*dwarf.Data, error) {
 		return nil, errors.New("unknown binary format")
 	}
 }
+
+type outputWriter struct {
+	out        io.Writer
+	executable string
+	line       []byte
+}
+
+// newOutputWriter returns an io.Writer that will intercept panic addresses and
+// will try to insert a source location in the output if the source location can
+// be found in the executable.
+func newOutputWriter(out io.Writer, executable string) *outputWriter {
+	return &outputWriter{
+		out:        out,
+		executable: executable,
+	}
+}
+
+func (w *outputWriter) Write(p []byte) (n int, err error) {
+	start := 0
+	for i, c := range p {
+		if c == '\n' {
+			w.out.Write(p[start : i+1])
+			start = i + 1
+			address := extractPanicAddress(w.line)
+			if address != 0 {
+				loc, err := addressToLine(w.executable, address)
+				if err == nil && loc.Filename != "" {
+					fmt.Printf("[tinygo: panic at %s]\n", loc.String())
+				}
+			}
+			w.line = w.line[:0]
+		} else {
+			w.line = append(w.line, c)
+		}
+	}
+	w.out.Write(p[start:])
+	n = len(p)
+	return
+}

src/crypto/rand/rand_arc4random.go

@@ -3,7 +3,7 @@
 // This implementation of crypto/rand uses the arc4random_buf function
 // (available on both MacOS and WASI) to generate random numbers.
 //
-// Note: arc4random_buf (unlike what the name suggets) does not use the insecure
+// Note: arc4random_buf (unlike what the name suggests) does not use the insecure
 // RC4 cipher. Instead, it uses a high-quality cipher, varying by the libc
 // implementation.
 

src/crypto/tls/tls.go

@@ -101,7 +101,7 @@ type Dialer struct {
 //
 // The returned Conn, if any, will always be of type *Conn.
 func (d *Dialer) DialContext(ctx context.Context, network, addr string) (net.Conn, error) {
-	return nil, errors.New("tls:DialContext not implmented")
+	return nil, errors.New("tls:DialContext not implemented")
 }
 
 // LoadX509KeyPair reads and parses a public/private key pair from a pair

src/internal/abi/abi.go

@@ -0,0 +1,2 @@
+// Package abi exposes low-level details of the Go compiler/runtime
+package abi

src/internal/abi/escape.go

@@ -0,0 +1,10 @@
+package abi
+
+import "unsafe"
+
+// Tell the compiler the given pointer doesn't escape.
+// The compiler knows about this function and will give the nocapture parameter
+// attribute.
+func NoEscape(p unsafe.Pointer) unsafe.Pointer {
+	return p
+}

src/internal/abi/funcpc.go

@@ -0,0 +1,12 @@
+package abi
+
+// These two signatures are present to satisfy the expectation of some programs
+// (in particular internal/syscall/unix on MacOS). They do not currently have an
+// implementation, in part because TinyGo doesn't use ABI0 or ABIInternal (it
+// uses a C-like calling convention).
+// Calls to FuncPCABI0 however are treated specially by the compiler when
+// compiling for MacOS.
+
+func FuncPCABI0(f interface{}) uintptr
+
+func FuncPCABIInternal(f interface{}) uintptr

src/internal/bytealg/bytealg.go

@@ -42,6 +42,31 @@ func Compare(a, b []byte) int {
 	}
 }
 
+// This function was copied from the Go 1.23 source tree (with runtime_cmpstring
+// manually inlined).
+func CompareString(a, b string) int {
+	l := len(a)
+	if len(b) < l {
+		l = len(b)
+	}
+	for i := 0; i < l; i++ {
+		c1, c2 := a[i], b[i]
+		if c1 < c2 {
+			return -1
+		}
+		if c1 > c2 {
+			return +1
+		}
+	}
+	if len(a) < len(b) {
+		return -1
+	}
+	if len(a) > len(b) {
+		return +1
+	}
+	return 0
+}
+
 // Count the number of instances of a byte in a slice.
 func Count(b []byte, c byte) int {
 	// Use a simple implementation, as there is no intrinsic that does this like we want.

src/internal/wasi/cli/v0.2.0/command/command.wit.go

@@ -1,6 +1,4 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package command represents the world "wasi:cli/command@0.2.0".
 package command

src/internal/wasi/cli/v0.2.0/environment/environment.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package environment represents the imported interface "wasi:cli/environment@0.2.0".
 package environment
 

src/internal/wasi/cli/v0.2.0/exit/exit.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package exit represents the imported interface "wasi:cli/exit@0.2.0".
 package exit
 

src/internal/wasi/cli/v0.2.0/run/run.exports.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 package run
 
 import (

src/internal/wasi/cli/v0.2.0/run/run.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package run represents the exported interface "wasi:cli/run@0.2.0".
 package run
 

src/internal/wasi/cli/v0.2.0/stderr/stderr.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package stderr represents the imported interface "wasi:cli/stderr@0.2.0".
 package stderr
 

src/internal/wasi/cli/v0.2.0/stdin/stdin.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package stdin represents the imported interface "wasi:cli/stdin@0.2.0".
 package stdin
 

src/internal/wasi/cli/v0.2.0/stdout/stdout.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package stdout represents the imported interface "wasi:cli/stdout@0.2.0".
 package stdout
 

src/internal/wasi/cli/v0.2.0/terminal-input/terminal-input.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package terminalinput represents the imported interface "wasi:cli/terminal-input@0.2.0".
 //
 // Terminal input.

src/internal/wasi/cli/v0.2.0/terminal-output/terminal-output.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package terminaloutput represents the imported interface "wasi:cli/terminal-output@0.2.0".
 //
 // Terminal output.

src/internal/wasi/cli/v0.2.0/terminal-stderr/terminal-stderr.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package terminalstderr represents the imported interface "wasi:cli/terminal-stderr@0.2.0".
 //
 // An interface providing an optional `terminal-output` for stderr as a

src/internal/wasi/cli/v0.2.0/terminal-stdin/terminal-stdin.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package terminalstdin represents the imported interface "wasi:cli/terminal-stdin@0.2.0".
 //
 // An interface providing an optional `terminal-input` for stdin as a

src/internal/wasi/cli/v0.2.0/terminal-stdout/terminal-stdout.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package terminalstdout represents the imported interface "wasi:cli/terminal-stdout@0.2.0".
 //
 // An interface providing an optional `terminal-output` for stdout as a

src/internal/wasi/clocks/v0.2.0/monotonic-clock/monotonic-clock.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package monotonicclock represents the imported interface "wasi:clocks/monotonic-clock@0.2.0".
 //
 // WASI Monotonic Clock is a clock API intended to let users measure elapsed

src/internal/wasi/clocks/v0.2.0/wall-clock/wall-clock.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package wallclock represents the imported interface "wasi:clocks/wall-clock@0.2.0".
 //
 // WASI Wall Clock is a clock API intended to let users query the current

src/internal/wasi/filesystem/v0.2.0/preopens/preopens.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package preopens represents the imported interface "wasi:filesystem/preopens@0.2.0".
 package preopens
 

src/internal/wasi/filesystem/v0.2.0/types/abi.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 package types
 
 import (

src/internal/wasi/filesystem/v0.2.0/types/types.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package types represents the imported interface "wasi:filesystem/types@0.2.0".
 //
 // WASI filesystem is a filesystem API primarily intended to let users run WASI

src/internal/wasi/io/v0.2.0/error/error.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package ioerror represents the imported interface "wasi:io/error@0.2.0".
 package ioerror
 

src/internal/wasi/io/v0.2.0/poll/poll.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package poll represents the imported interface "wasi:io/poll@0.2.0".
 //
 // A poll API intended to let users wait for I/O events on multiple handles

src/internal/wasi/io/v0.2.0/streams/abi.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 package streams
 
 import (

src/internal/wasi/io/v0.2.0/streams/streams.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package streams represents the imported interface "wasi:io/streams@0.2.0".
 //
 // WASI I/O is an I/O abstraction API which is currently focused on providing

src/internal/wasi/random/v0.2.0/insecure-seed/insecure-seed.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package insecureseed represents the imported interface "wasi:random/insecure-seed@0.2.0".
 //
 // The insecure-seed interface for seeding hash-map DoS resistance.

src/internal/wasi/random/v0.2.0/insecure/insecure.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package insecure represents the imported interface "wasi:random/insecure@0.2.0".
 //
 // The insecure interface for insecure pseudo-random numbers.

src/internal/wasi/random/v0.2.0/random/random.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package random represents the imported interface "wasi:random/random@0.2.0".
 //
 // WASI Random is a random data API.

src/internal/wasi/sockets/v0.2.0/instance-network/instance-network.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package instancenetwork represents the imported interface "wasi:sockets/instance-network@0.2.0".
 //
 // This interface provides a value-export of the default network handle..

src/internal/wasi/sockets/v0.2.0/ip-name-lookup/abi.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 package ipnamelookup
 
 import (

src/internal/wasi/sockets/v0.2.0/ip-name-lookup/ip-name-lookup.wit.go

@@ -1,7 +1,5 @@
 // Code generated by wit-bindgen-go. DO NOT EDIT.
 
-//go:build !wasip1
-
 // Package ipnamelookup represents the imported interface "wasi:sockets/ip-name-lookup@0.2.0".
 package ipnamelookup