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package builder
import (
"os"
"path/filepath"
"github.com/tinygo-org/tinygo/goenv"
)
var WasmBuiltins = Library{
name: "wasmbuiltins",
makeHeaders: func(target, includeDir string) error {
os.Mkdir(includeDir+"/bits", 0o777)
f, err := os.Create(includeDir + "/bits/alltypes.h")
if err != nil {
return err
}
if _, err := f.Write([]byte(wasmAllTypes)); err != nil {
return err
}
return f.Close()
},
cflags: func(target, headerPath string) []string {
libcDir := filepath.Join(goenv.Get("TINYGOROOT"), "lib/wasi-libc")
return []string{
"-Werror",
"-Wall",
"-std=gnu11",
"-nostdlibinc",
"-isystem", libcDir + "/libc-top-half/musl/arch/wasm32",
"-isystem", libcDir + "/libc-top-half/musl/arch/generic",
"-isystem", libcDir + "/libc-top-half/musl/src/internal",
"-isystem", libcDir + "/libc-top-half/musl/src/include",
"-isystem", libcDir + "/libc-top-half/musl/include",
"-isystem", libcDir + "/libc-bottom-half/headers/public",
"-I" + headerPath,
}
},
sourceDir: func() string { return filepath.Join(goenv.Get("TINYGOROOT"), "lib/wasi-libc") },
librarySources: func(target string) ([]string, error) {
return []string{
// memory builtins needed for llvm.memcpy.*, llvm.memmove.*, and
// llvm.memset.* LLVM intrinsics.
"libc-top-half/musl/src/string/memcpy.c",
"libc-top-half/musl/src/string/memmove.c",
"libc-top-half/musl/src/string/memset.c",
// exp, exp2, and log are needed for LLVM math builtin functions
// like llvm.exp.*.
"libc-top-half/musl/src/math/__math_divzero.c",
"libc-top-half/musl/src/math/__math_invalid.c",
"libc-top-half/musl/src/math/__math_oflow.c",
"libc-top-half/musl/src/math/__math_uflow.c",
"libc-top-half/musl/src/math/__math_xflow.c",
"libc-top-half/musl/src/math/exp.c",
"libc-top-half/musl/src/math/exp_data.c",
"libc-top-half/musl/src/math/exp2.c",
"libc-top-half/musl/src/math/log.c",
"libc-top-half/musl/src/math/log_data.c",
}, nil
},
}
// alltypes.h for wasm-libc, using the types as defined inside Clang.
const wasmAllTypes = `
typedef __SIZE_TYPE__ size_t;
typedef __INT8_TYPE__ int8_t;
typedef __INT16_TYPE__ int16_t;
typedef __INT32_TYPE__ int32_t;
typedef __INT64_TYPE__ int64_t;
typedef __UINT8_TYPE__ uint8_t;
typedef __UINT16_TYPE__ uint16_t;
typedef __UINT32_TYPE__ uint32_t;
typedef __UINT64_TYPE__ uint64_t;
typedef __UINTPTR_TYPE__ uintptr_t;
// This type is used internally in wasi-libc.
typedef double double_t;
`
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