wasm: add support for GOOS=wasip1

Makefile

@@ -417,6 +417,8 @@ tinygo-bench-fast:
 # Same thing, except for wasi rather than the current platform.
 tinygo-test-wasi:
 	$(TINYGO) test -target wasi $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_SLOW) ./tests/runtime_wasi
+tinygo-test-wasip1:
+	GOOS=wasip1 GOARCH=wasm $(TINYGO) test $(TEST_PACKAGES_FAST) $(TEST_PACKAGES_SLOW) ./tests/runtime_wasi
 tinygo-test-wasi-fast:
 	$(TINYGO) test -target wasi $(TEST_PACKAGES_FAST) ./tests/runtime_wasi
 tinygo-bench-wasi:

builder/builder_test.go

@@ -60,6 +60,7 @@ func TestClangAttributes(t *testing.T) {
 		{GOOS: "darwin", GOARCH: "arm64"},
 		{GOOS: "windows", GOARCH: "amd64"},
 		{GOOS: "windows", GOARCH: "arm64"},
+		{GOOS: "wasip1", GOARCH: "wasm"},
 	} {
 		name := "GOOS=" + options.GOOS + ",GOARCH=" + options.GOARCH
 		if options.GOARCH == "arm" {

compileopts/target.go

@@ -191,12 +191,15 @@ func LoadTarget(options *Options) (*TargetSpec, error) {
 			default:
 				return nil, fmt.Errorf("invalid GOARM=%s, must be 5, 6, or 7", options.GOARM)
 			}
+		case "wasm":
+			llvmarch = "wasm32"
 		default:
 			llvmarch = options.GOARCH
 		}
 		llvmvendor := "unknown"
 		llvmos := options.GOOS
-		if llvmos == "darwin" {
+		switch llvmos {
+		case "darwin":
 			// Use macosx* instead of darwin, otherwise darwin/arm64 will refer
 			// to iOS!
 			llvmos = "macosx10.12.0"
@@ -207,6 +210,8 @@ func LoadTarget(options *Options) (*TargetSpec, error) {
 				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:
@@ -277,6 +282,15 @@ func defaultTarget(goos, goarch, triple string) (*TargetSpec, error) {
 	case "arm64":
 		spec.CPU = "generic"
 		spec.Features = "+neon"
+	case "wasm":
+		spec.CPU = "generic"
+		spec.Features = "+bulk-memory,+nontrapping-fptoint,+sign-ext"
+		spec.BuildTags = append(spec.BuildTags, "tinygo.wasm")
+		spec.CFlags = append(spec.CFlags,
+			"-mbulk-memory",
+			"-mnontrapping-fptoint",
+			"-msign-ext",
+		)
 	}
 	if goos == "darwin" {
 		spec.Linker = "ld.lld"
@@ -320,6 +334,21 @@ func defaultTarget(goos, goarch, triple string) (*TargetSpec, error) {
 			"--no-insert-timestamp",
 			"--no-dynamicbase",
 		)
+	} else if goos == "wasip1" {
+		spec.Scheduler = "asyncify"
+		spec.Linker = "wasm-ld"
+		spec.RTLib = "compiler-rt"
+		spec.Libc = "wasi-libc"
+		spec.DefaultStackSize = 1024 * 16 // 16kB
+		spec.LDFlags = append(spec.LDFlags,
+			"--stack-first",
+			"--no-demangle",
+		)
+		spec.Emulator = "wasmtime --mapdir=/tmp::{tmpDir} {}"
+		spec.ExtraFiles = append(spec.ExtraFiles,
+			"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
 	}

main_test.go

@@ -34,6 +34,7 @@ var supportedLinuxArches = map[string]string{
 	"X86Linux":   "linux/386",
 	"ARMLinux":   "linux/arm/6",
 	"ARM64Linux": "linux/arm64",
+	"WASIp1":     "wasip1/wasm",
 }
 
 var sema = make(chan struct{}, runtime.NumCPU())

src/os/dir_unix.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build linux && !baremetal && !wasi
+//go:build linux && !baremetal && !wasi && !wasip1
 
 package os
 

src/os/dir_wasi.go

@@ -6,7 +6,7 @@
 // fairly similar: we use fdopendir, fdclosedir, and readdir from wasi-libc in
 // a similar way that the darwin code uses functions from libc.
 
-//go:build wasi
+//go:build wasi || wasip1
 
 package os
 

src/os/exec_posix.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build aix || darwin || dragonfly || freebsd || (js && wasm) || linux || netbsd || openbsd || solaris || windows
+//go:build aix || darwin || dragonfly || freebsd || (js && wasm) || linux || netbsd || openbsd || solaris || wasip1 || windows
 
 package os
 

src/os/file_other.go

@@ -1,4 +1,4 @@
-//go:build baremetal || (wasm && !wasi)
+//go:build baremetal || (wasm && !wasi && !wasip1)
 
 package os
 

src/os/file_unix.go

@@ -1,4 +1,4 @@
-//go:build darwin || (linux && !baremetal)
+//go:build darwin || (linux && !baremetal) || wasip1
 
 // target wasi sets GOOS=linux and thus the +linux build tag,
 // even though it doesn't show up in "tinygo info target -wasi"

src/os/types_unix.go

@@ -1,4 +1,4 @@
-//go:build darwin || (linux && !baremetal)
+//go:build darwin || (linux && !baremetal) || wasip1
 
 // Copyright 2009 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style

src/runtime/os_wasip1.go

@@ -0,0 +1,8 @@
+package runtime
+
+// The actual GOOS=wasip1, as newly added in the Go 1.21 toolchain.
+// Previously we supported -target=wasi, but that was essentially faked by using
+// linux/arm instead because that was the closest thing that was already
+// supported in the Go standard library.
+
+const GOOS = "wasip1"

src/runtime/runtime_wasm_js_scheduler.go

@@ -1,4 +1,4 @@
-//go:build wasm && !wasi && !scheduler.none
+//go:build wasm && !wasi && !scheduler.none && !wasip1
 
 package runtime
 

src/runtime/runtime_wasm_wasi.go

@@ -1,4 +1,4 @@
-//go:build tinygo.wasm && wasi
+//go:build tinygo.wasm && (wasi || wasip1)
 
 package runtime
 

src/syscall/errno_other.go

@@ -1,4 +1,4 @@
-//go:build !wasi && !darwin
+//go:build !wasi && !wasip1 && !darwin
 
 package syscall
 

src/syscall/proc_emulated.go

@@ -1,4 +1,4 @@
-//go:build baremetal || wasi || wasm
+//go:build baremetal || tinygo.wasm
 
 // This file emulates some process-related functions that are only available
 // under a real operating system.

src/syscall/proc_hosted.go

@@ -1,4 +1,4 @@
-//go:build !baremetal && !wasi && !wasm
+//go:build !baremetal && !tinygo.wasm
 
 // This file assumes there is a libc available that runs on a real operating
 // system.

src/syscall/syscall_libc.go

@@ -1,4 +1,4 @@
-//go:build darwin || nintendoswitch || wasi
+//go:build darwin || nintendoswitch || wasi || wasip1
 
 package syscall
 

src/syscall/syscall_libc_wasi.go

@@ -1,4 +1,4 @@
-//go:build wasi
+//go:build wasi || wasip1
 
 package syscall