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30 lines
596 B
ArmAsm
30 lines
596 B
ArmAsm
/*
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* linux/arch/arm/lib/strchr.S
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*
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* Copyright (C) 1995-2000 Russell King
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* ASM optimised string functions
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*/
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#include <linux/linkage.h>
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#include <asm/assembler.h>
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#include <asm/export.h>
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.text
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.align 5
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ENTRY(strchr)
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and r1, r1, #0xff
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1: ldrb r2, [r0], #1
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teq r2, r1
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teqne r2, #0
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bne 1b
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teq r2, r1
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movne r0, #0
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subeq r0, r0, #1
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ret lr
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ENDPROC(strchr)
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EXPORT_SYMBOL(strchr)
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