"MODU",
	"DIVHW",
	"DIVUHW",
	"MOVB",
	"MOVBS",
	"MOVBU",
	"MOVH",
	"MOVHS",
	"MOVHU",
	"MOVW",
	"MOVM",
	"SWPBU",
	"SWPW",
	"RFE",
	"SWI",
	"MULA",
	"MULS",
	"MMULA",
	"MMULS",
	"WORD",
	"MULL",
	"MULAL",
	"MULLU",
	"MULALU",
	"BX",
	"BXRET",
	"DWORD",
	"LDREX",
	"STREX",
	"LDREXD",
	"STREXD",
	"DMB",
	"PLD",
	"CLZ",
	"REV",

		((x5 & 7) << 5) | // coprocessor information
		(1 << 4) /* must be set */
	return offset, arm.AMRC, true
}

// IsARMMULA reports whether the op (as defined by an arm.A* constant) is
// MULA, MULS, MMULA, MMULS, MULABB, MULAWB or MULAWT, the 4-operand instructions.
func IsARMMULA(op obj.As) bool {
	switch op {
	case arm.AMULA, arm.AMULS, arm.AMMULA, arm.AMMULS, arm.AMULABB, arm.AMULAWB, arm.AMULAWT:
		return true
	}

	MULAWT		R1, R2, R3, R4       // c23124e1
	MULAWB		R1, R2, R3, R4       // 823124e1
	MULS		R1, R2, R3, R4       // 923164e0
	MULA		R1, R2, R3, R4       // 923124e0
	MULA.S		R1, R2, R3, R4       // 923134e0
	MMULA		R1, R2, R3, R4       // 123154e7
	MMULS		R1, R2, R3, R4       // d23154e7
	MULABB		R1, R2, R3, R4       // 823104e1
	MULAL		R1, R2, (R4, R3)     // 9231e4e0
	MULAL.S		R1, R2, (R4, R3)     // 9231f4e0