arch/arm/lib/strrchr.S

   1 /*
   2  *  linux/arch/arm/lib/strrchr.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
  18 ENTRY(strrchr)
  19                 mov     r3, #0
  20 1:              ldrb    r2, [r0], #1
  21                 teq     r2, r1
  22                 subeq   r3, r0, #1
  23                 teq     r2, #0
  24                 bne     1b
  25                 mov     r0, r3
  26                 ret     lr
  27 ENDPROC(strrchr)
  28 EXPORT_SYMBOL(strrchr)