/*TEXT	xadd(SB),$0	/* long xadd(long *, long); */ /*	MOVL	i+8(FP),AX/*	LOCK/*	XADDL	AX, (RARG)/*	RET*/ TEXT	_xinc(SB),$0	/* void _xinc(long *); */ 	LOCK; INCL	0(RARG)	RET TEXT	_xdec(SB),$0	/* long _xdec(long *); */ 	MOVL	$0, AX	MOVL	$1, BX	LOCK; DECL	0(RARG)	CMOVLNE	BX, AX	RET