XORW	(R1), R2              // 57201000
	XORW	-1(R1), R2            // e3201fffff57

	// shift and rotate instructions
	SRD	$4, R4, R7              // eb740004000c
	SRD	R1, R4, R7              // eb741000000c
	SRW	$4, R4, R7              // eb74000400de
	SRW	R1, R4, R7              // eb74100000de
	SLW	$4, R3, R6              // eb63000400df
	SLW	R2, R3, R6              // eb63200000df

	MOVW.S	$0xaaaaaaaa, R7    // ERROR "invalid .S suffix"
	MOVW.P	$0xffffff44, R1    // ERROR "invalid .P suffix"
	MOVW.S	$0xffffff77, R1    // ERROR "invalid .S suffix"
	MVN.S	$0xffffffaa, R8    // ERROR "invalid .S suffix"
	MVN.S	$0xaaaaaaaa, R8    // ERROR "invalid .S suffix"
	ADD.U	$0xaaaaaaaa, R4    // ERROR "invalid .U suffix"
	ORR.P	$0x555555, R7, R3  // ERROR "invalid .P suffix"

	OR $65535, R5, R6               // 60a6ffff
	OR $65536, R6                   // 64c60001
	OR $65536, R6, R7               // 64c70001
	OR $-32767, R5                  // 3be080017fe52b78
	OR $-32767, R5, R6              // 3be080017fe62b78
	OR $-32768, R6                  // 3be080007fe63378
	OR $-32768, R6, R7              // 3be080007fe73378
	OR $1234567, R5                 // 64a5001260a5d687

		}
		// fmt.Printf("SYM %s\n", obj.Dconv(&emptyProg, 0, a))
		if p.peek() == scanner.EOF {
			return
		}
	}

	// Special register list syntax for arm: [R1,R3-R7]
	if tok.ScanToken == '[' {
		if prefix != 0 {
			p.errorf("illegal use of register list")
		}
		p.registerList(a)
		p.expectOperandEnd()
		return
	}

	// Register: R1