mirror of https://gitee.com/openkylin/linux.git
26 lines
527 B
ArmAsm
26 lines
527 B
ArmAsm
|
/*
|
||
|
|
* linux/arch/arm26/lib/strrchr.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(strrchr)
|
||
|
|
mov r3, #0
|
||
|
|
1: ldrb r2, [r0], #1
|
||
|
|
teq r2, r1
|
||
|
|
subeq r3, r0, #1
|
||
|
|
teq r2, #0
|
||
|
|
bne 1b
|
||
|
|
mov r0, r3
|
||
|
|
RETINSTR(mov,pc,lr)
|