}
	if REG_M0 <= r && r <= REG_M31 {
		return fmt.Sprintf("M%d", r-REG_M0)
	}
	if REG_FCR0 <= r && r <= REG_FCR31 {
		return fmt.Sprintf("FCR%d", r-REG_FCR0)
	}
	if REG_W0 <= r && r <= REG_W31 {
		return fmt.Sprintf("W%d", r-REG_W0)
	}
	if r == REG_HI {
		return "HI"
	}
	if r == REG_LO {
		return "LO"
	}

	return fmt.Sprintf("Rgok(%d)", r-obj.RBaseMIPS)
}

func DRconv(a int) string {

		panic("REG_F0 is not a multiple of 32")
	}
	if REG_M0%32 != 0 {
		panic("REG_M0 is not a multiple of 32")
	}
	if REG_FCR0%32 != 0 {
		panic("REG_FCR0 is not a multiple of 32")
	}
	if REG_W0%32 != 0 {
		panic("REG_W0 is not a multiple of 32")
	}

		}
	case "M":
		if 0 <= n && n <= 31 {
			return mips.REG_M0 + n, true
		}
	case "R":
		if 0 <= n && n <= 31 {
			return mips.REG_R0 + n, true
		}
	case "W":
		if 0 <= n && n <= 31 {
			return mips.REG_W0 + n, true
		}
	}
	return 0, false

	}
	for i := mips.REG_M0; i <= mips.REG_M31; i++ {
		register[obj.Rconv(i)] = int16(i)
	}
	for i := mips.REG_FCR0; i <= mips.REG_FCR31; i++ {
		register[obj.Rconv(i)] = int16(i)
	}
	for i := mips.REG_W0; i <= mips.REG_W31; i++ {
		register[obj.Rconv(i)] = int16(i)
	}
	register["HI"] = mips.REG_HI
	register["LO"] = mips.REG_LO
	// Pseudo-registers.
	register["SB"] = RSB
	register["FP"] = RFP

		if REG_F0 <= a.Reg && a.Reg <= REG_F31 {
			return C_FREG
		}
		if REG_M0 <= a.Reg && a.Reg <= REG_M31 {
			return C_MREG
		}
		if REG_FCR0 <= a.Reg && a.Reg <= REG_FCR31 {
			return C_FCREG
		}
		if REG_W0 <= a.Reg && a.Reg <= REG_W31 {
			return C_WREG
		}
		if a.Reg == REG_LO {
			return C_LO
		}
		if a.Reg == REG_HI {
			return C_HI
		}
		return C_GOK

	case obj.TYPE_MEM: