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