TEXT	_xdec(SB), $-8	MOVQ	R0, R1		/* p */dec1:	MOVLL	(R1), R0		/* *p */	SUBL		$1, R0	MOVQ	R0, R2	MOVLC	R2, (R1)		/* --(*p) */	BEQ		R2, dec1		/* write failed, retry */	RET TEXT	_xinc(SB), $-8	MOVQ	R0, R1		/* p */inc1:	MOVLL	(R1), R0		/* *p */	ADDL	$1, R0	MOVLC	R0, (R1)		/* (*p)++ */	BEQ		R0, inc1		/* write failed, retry */	RET