diff --git a/cmd/irdump/main.go b/cmd/irdump/main.go
new file mode 100644
index 0000000..432590f
--- /dev/null
+++ b/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
+}