mirror of
https://github.com/tinygo-org/tinygo.git
synced 2026-07-26 06:38:42 +00:00
Ayke van Laethem
c08b2dfe06
This adds support for `-gc=boehm` on `-target=wasip1` and `-target=wasm` (in a browser or NodeJS). Notably it does *not* add Boehm GC support for `-target=wasip2`, since that target doesn't have a real libc.
84 lines
2.6 KiB
Go
84 lines
2.6 KiB
Go
package builder
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import (
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"os"
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"path/filepath"
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"github.com/tinygo-org/tinygo/goenv"
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)
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var libWasmBuiltins = Library{
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name: "wasmbuiltins",
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makeHeaders: func(target, includeDir string) error {
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if err := os.Mkdir(includeDir+"/bits", 0o777); err != nil {
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return err
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}
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f, err := os.Create(includeDir + "/bits/alltypes.h")
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if err != nil {
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return err
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}
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if _, err := f.Write([]byte(wasmAllTypes)); err != nil {
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return err
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}
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return f.Close()
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},
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cflags: func(target, headerPath string) []string {
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libcDir := filepath.Join(goenv.Get("TINYGOROOT"), "lib/wasi-libc")
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return []string{
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"-Werror",
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"-Wall",
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"-std=gnu11",
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"-nostdlibinc",
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"-mnontrapping-fptoint", // match wasm-unknown (default on in LLVM 20)
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"-mno-bulk-memory", // same here
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"-isystem", libcDir + "/libc-top-half/musl/arch/wasm32",
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"-isystem", libcDir + "/libc-top-half/musl/arch/generic",
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"-isystem", libcDir + "/libc-top-half/musl/src/internal",
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"-isystem", libcDir + "/libc-top-half/musl/src/include",
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"-isystem", libcDir + "/libc-top-half/musl/include",
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"-isystem", libcDir + "/libc-bottom-half/headers/public",
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"-I" + headerPath,
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}
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},
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sourceDir: func() string { return filepath.Join(goenv.Get("TINYGOROOT"), "lib/wasi-libc") },
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librarySources: func(target string, _ bool) ([]string, error) {
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return []string{
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// memory builtins needed for llvm.memcpy.*, llvm.memmove.*, and
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// llvm.memset.* LLVM intrinsics.
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"libc-top-half/musl/src/string/memcpy.c",
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"libc-top-half/musl/src/string/memmove.c",
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"libc-top-half/musl/src/string/memset.c",
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// exp, exp2, and log are needed for LLVM math builtin functions
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// like llvm.exp.*.
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"libc-top-half/musl/src/math/__math_divzero.c",
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"libc-top-half/musl/src/math/__math_invalid.c",
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"libc-top-half/musl/src/math/__math_oflow.c",
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"libc-top-half/musl/src/math/__math_uflow.c",
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"libc-top-half/musl/src/math/__math_xflow.c",
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"libc-top-half/musl/src/math/exp.c",
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"libc-top-half/musl/src/math/exp_data.c",
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"libc-top-half/musl/src/math/exp2.c",
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"libc-top-half/musl/src/math/log.c",
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"libc-top-half/musl/src/math/log_data.c",
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}, nil
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},
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}
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// alltypes.h for wasm-libc, using the types as defined inside Clang.
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const wasmAllTypes = `
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typedef __SIZE_TYPE__ size_t;
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typedef __INT8_TYPE__ int8_t;
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typedef __INT16_TYPE__ int16_t;
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typedef __INT32_TYPE__ int32_t;
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typedef __INT64_TYPE__ int64_t;
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typedef __UINT8_TYPE__ uint8_t;
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typedef __UINT16_TYPE__ uint16_t;
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typedef __UINT32_TYPE__ uint32_t;
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typedef __UINT64_TYPE__ uint64_t;
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typedef __UINTPTR_TYPE__ uintptr_t;
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// This type is used internally in wasi-libc.
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typedef double double_t;
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`
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