// Objdump disassembles executable files.
//
// Usage:
//
//	go tool objdump [-s symregexp] binary
//
// Objdump prints a disassembly of all text symbols (code) in the binary.
// If the -s option is present, objdump only disassembles
// symbols with names matching the regular expression.
//
// Alternate usage:
//
//	go tool objdump binary start end
//

func xmain() {
	if len(os.Args) < 2 {
		usage()
	}
	cmd := os.Args[1]
	os.Args = os.Args[1:] // for flag parsing during cmd
	flag.Usage = func() {
		fmt.Fprintf(os.Stderr, "usage: go tool dist %s [options]\n", cmd)
		flag.PrintDefaults()
		os.Exit(2)
	}
	if f, ok := commands[cmd]; ok {
		f()
	} else {
		xprintf("unknown command %s\n", cmd)
		usage()
	}

//		Time    time.Time // encodes as an RFC3339-format string
//		Action  string
//		Package string
//		Test    string
//		Elapsed float64 // seconds
//		Output  string
//	}
//
// The Time field holds the time the event happened.
// It is conventionally omitted for cached test results.
//
// The Action field is one of a fixed set of action descriptions:
//
//	start  - the test binary is about to be executed