cmd/irdump: create cli

For targets where the bootstrap toolchain is not available.

Signed-off-by: Ophestra <cat@gensokyo.uk>

cmd/irdump/main.go

@@ -0,0 +1,68 @@
+package main
+
+import (
+	"bytes"
+	"errors"
+	"io"
+	"log"
+	"os"
+
+	"hakurei.app/command"
+)
+
+func main() {
+	log.SetFlags(0)
+	log.SetPrefix("irdump: ")
+
+	var (
+		flagOutput string
+		flagReal   bool
+	)
+	c := command.New(os.Stderr, log.Printf, "irdump", func(args []string) (err error) {
+		var input *os.File
+		if len(args) < 1 {
+			return errors.New("irdump requires 1 argument")
+		}
+		if input, err = os.Open(args[0]); err != nil {
+			return
+		}
+		defer input.Close()
+
+		var output *os.File
+		if flagOutput == "" {
+			output = os.Stdout
+		} else {
+			defer output.Close()
+			if output, err = os.Create(flagOutput); err != nil {
+				return
+			}
+		}
+
+		inputData := bytes.NewBuffer(nil)
+		if _, err = io.Copy(inputData, input); err != nil {
+			return
+		}
+		var out string
+		if out, err = Disassemble(inputData.Bytes(), flagReal); err != nil {
+			return
+		}
+		if _, err = output.WriteString(out); err != nil {
+			return
+		}
+		return
+	}).Flag(
+		&flagOutput,
+		"o", command.StringFlag(""),
+		"Output file for asm (leave empty for stdout)",
+	).Flag(
+		&flagReal,
+		"r", command.BoolFlag(false),
+		"skip label generation; idents print real value")
+
+	c.MustParse(os.Args[1:], func(err error) {
+		log.Fatal(err)
+	})
+}
+func Disassemble(ir []byte, real bool) (string, error) {
+	return "hello world", nil
+}

internal/rosa/go.go

@@ -63,18 +63,49 @@ ln -s \
 }
 
 func (t Toolchain) newGoLatest() pkg.Artifact {
+	var (
+		bootstrapEnv   []string
+		bootstrapExtra []pkg.Artifact
+	)
+	switch runtime.GOARCH {
+	case "amd64":
+		bootstrapExtra = append(bootstrapExtra, t.newGoBootstrap())
+
+	case "arm64":
+		bootstrapEnv = append(bootstrapEnv,
+			"GOROOT_BOOTSTRAP=/system",
+		)
+		bootstrapExtra = append(bootstrapExtra,
+			t.Load(Binutils),
+
+			t.Load(GMP),
+			t.Load(MPFR),
+			t.Load(MPC),
+
+			t.Load(Zlib),
+			t.Load(Libucontext),
+
+			t.Load(gcc),
+		)
+
+	default:
+		panic("unsupported target " + runtime.GOARCH)
+	}
+
 	go119 := t.newGo(
 		"1.19",
 		"9_e0aFHsIkVxWVGsp9T2RvvjOc3p4n9o9S8tkNe9Cvgzk_zI2FhRQB7ioQkeAAro",
-		[]string{"CGO_ENABLED=0"}, `
+		append(bootstrapEnv, "CGO_ENABLED=0"), `
 rm \
 	crypto/tls/handshake_client_test.go \
 	os/os_unix_test.go
+sed -i \
+	's/os\.Getenv("GCCGO")$/"nonexistent"/' \
+	go/internal/gccgoimporter/importer_test.go
 echo \
 	'type syscallDescriptor = int' >> \
 	os/rawconn_test.go
-`, t.newGoBootstrap(),
-	)
+`, bootstrapExtra...)
 
 	go121 := t.newGo(
 		"1.21.13",