summaryrefslogtreecommitdiffstats
path: root/arch/arm/lib/strchr.S
blob: 5b9b493733fc4090e06d23e835a55b731cd7e445 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
/*
 *  linux/arch/arm/lib/strchr.S
 *
 *  Copyright (C) 1995-2000 Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 *  ASM optimised string functions
 */
#include <linux/linkage.h>
#include <asm/assembler.h>

		.text
		.align	5
ENTRY(strchr)
		and	r1, r1, #0xff
1:		ldrb	r2, [r0], #1
		teq	r2, r1
		teqne	r2, #0
		bne	1b
		teq	r2, r1
		movne	r0, #0
		subeq	r0, r0, #1
		RETINSTR(mov,pc,lr)
OpenPOWER on IntegriCloud