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WebSVN – planix.SVN – Blame – /os/branches/feature_tlsv12/sys/src/libc/power/strncmp.s – Rev 2

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2 - 1 
TEXT	strncmp(SB), $0
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#define	BDNZ	BC	16,0,
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	MOVW	s2+4(FP), R4
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	MOVW	n+8(FP), R7
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	CMP	R7, $0
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	MOVW	R7, CTR
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	BLE	eq
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	SUB	$1, R3
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	SUB	$1, R4
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l1:
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	MOVBZU	1(R3), R5
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	MOVBZU	1(R4), R6
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	CMP	R5, R6
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	BNE	ne
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	CMP	R5, $0
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	BEQ	eq
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	BDNZ	l1
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eq:
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	MOVW	$0, R3
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	RETURN
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ne:
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	MOVW	$1, R3
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	BGT	ret
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	MOVW	$-1, R3
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ret:
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	RETURN