((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