flush()
			}
		}
		flush()
		fmt.Fprintf(&buf, "]")
		return buf.String()

	case RegShift:
		return fmt.Sprintf("R%d%s$%d", int(a.Reg), plan9Shift[a.Shift], int(a.Count))

	case RegShiftReg:
		return fmt.Sprintf("R%d%sR%d", int(a.Reg), plan9Shift[a.Shift], int(a.RegCount))
	}
	return strings.ToUpper(arg.String())
}

// convert memory operand from GNU syntax to Plan 9 syntax, for example,