Subversion Repositories planix.SVN

Rev

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Rev Author Line No. Line
2 - 1 
	TEXT	strchr(SB), $0
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3 
MOVW	R7, 0(FP)
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	MOVB	c+7(FP), R10
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	MOVW	s+0(FP), R9
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	SUBCC	R0,R10, R0
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	BE	l2
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/*
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 * char is not null
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 */
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l1:
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	MOVB	(R9), R7
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	ADD	$1, R9
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	SUBCC	R0,R7, R0
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	BE	ret
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	SUBCC	R7,R10, R0
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	BNE	l1
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	JMP	rm1
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/*
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 * char is null
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 * align to word
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 */
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l2:
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	ANDCC	$3,R9, R0
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	BE	l3
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	MOVB	(R9), R7
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	ADD	$1, R9
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	SUBCC	R0,R7, R0
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	BNE	l2
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	JMP	rm1
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/*
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 * develop byte masks
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 */
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l3:
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	MOVW	$0xff, R17
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	SLL	$8,R17, R16
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	SLL	$16,R17, R13
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	SLL	$24,R17, R12
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l4:
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	MOVW	(R9), R11
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	ADD	$4, R9
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	ANDCC	R12,R11, R0
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	BE	b0
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	ANDCC	R13,R11, R0
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	BE	b1
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	ANDCC	R16,R11, R0
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	BE	b2
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	ANDCC	R17,R11, R0
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	BNE	l4
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rm1:
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	SUB	$1,R9, R7
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	JMP	ret
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b2:
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	SUB	$2,R9, R7
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	JMP	ret
63 
 
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b1:
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	SUB	$3,R9, R7
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	JMP	ret
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b0:
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	SUB	$4,R9, R7
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	JMP	ret
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ret:
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	RETURN