}
	case REG_UXTX <= r && r < REG_SXTB:
		return roff(rm, 3, num)
	case REG_SXTB <= r && r < REG_SXTH:
		return roff(rm, 4, num)
	case REG_SXTH <= r && r < REG_SXTW:
		return roff(rm, 5, num)
	case REG_SXTW <= r && r < REG_SXTX:
		if a.Type == obj.TYPE_MEM {
			if num == 0 {
				return roff(rm, 6, 2)
			} else {
				return roff(rm, 6, 6)
			}
		} else {