blob: 9f18d6fdee6a9fddfd376e2637c82541747539ec [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
15 .text
16 .align 5
17ENTRY(strchr)
18 and r1, r1, #0xff
191: ldrb r2, [r0], #1
20 teq r2, r1
21 teqne r2, #0
22 bne 1b
23 teq r2, r1
24 movne r0, #0
25 subeq r0, r0, #1
Russell King7999d8d2006-06-25 11:17:23 +010026 mov pc, lr