memchr.S
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:1k
- /*
- * linux/arch/arm/lib/memchr.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(memchr)
- 1: ldrb r3, [r0], #1
- teq r3, r1
- beq 2f
- subs r2, r2, #1
- bpl 1b
- 2: movne r0, #0
- subeq r0, r0, #1
- RETINSTR(mov,pc,lr)