init

cmd/asm/main.go

@@ -0,0 +1,28 @@
+// Command asm assembles ship-program source into the binary that the
+// program endpoint accepts: asm prog.s > prog.bin
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"wh/vm"
+)
+
+func main() {
+	if len(os.Args) != 2 {
+		fmt.Fprintln(os.Stderr, "usage: asm <source.s> > program.bin")
+		os.Exit(2)
+	}
+	src, err := os.ReadFile(os.Args[1])
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+	prog, err := vm.Assemble(string(src))
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+	os.Stdout.Write(prog)
+}