}

// get returns the value of field f in cfg.
func (cfg *config) get(f configField) string {
	switch ptr := cfg.fieldPtr(f).(type) {
	case *string:
		return *ptr
	case *int:
		return fmt.Sprint(*ptr)
	case *float64:
		return fmt.Sprint(*ptr)
	case *bool:
		return fmt.Sprint(*ptr)
	}
	panic(fmt.Sprintf("unsupported config field type %v", f.field.Type))
}

	default:
		return fmt.Errorf("invalid linkmode: %q", s)
	case "auto":
		*mode = LinkAuto
	case "internal":
		*mode = LinkInternal
	case "external":
		*mode = LinkExternal
	}
	return nil
}

func (mode *LinkMode) String() string {
	switch *mode {
	case LinkAuto:
		return "auto"
	case LinkInternal:
		return "internal"
	case LinkExternal:
		return "external"
	}

	return c
}

func (c *Config) Ctxt() *obj.Link { return c.ctxt }

func (c *Config) haveByteSwap(size int64) bool {
	switch size {
	case 8:
		return c.haveBswap64
	case 4:
		return c.haveBswap32
	case 2:
		return c.haveBswap16
	default:
		base.Fatalf("bad size %d\n", size)
		return false
	}