xref: /linux/arch/arm/lib/strchr.S (revision 7c66e12136c2fa421ae75497e02728f252108a1b)
1/*
2 *  linux/arch/arm/lib/strchr.S
3 *
4 *  Copyright (C) 1995-2000 Russell King
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 *
10 *  ASM optimised string functions
11 */
12#include <linux/linkage.h>
13#include <asm/assembler.h>
14#include <asm/export.h>
15
16		.text
17		.align	5
18ENTRY(strchr)
19		and	r1, r1, #0xff
201:		ldrb	r2, [r0], #1
21		teq	r2, r1
22		teqne	r2, #0
23		bne	1b
24		teq	r2, r1
25		movne	r0, #0
26		subeq	r0, r0, #1
27		ret	lr
28ENDPROC(strchr)
29EXPORT_SYMBOL(strchr)
30