arch/arm/lib/strchr.S

   1 /*
   2  * linux/arch/arm/lib/strchr.S
   3  *
   4  * Copyright (C) 1995-2000 Russell King
   5  *
   6  * ASM optimised string functions
   7  */
   8 #include <linux/linkage.h>
   9 #include <asm/assembler.h>
  10
  11                 .text
  12                 .align  5
  13 ENTRY(strchr)
  14 1:              ldrb    r2, [r0], #1
  15                 teq     r2, r1
  16                 teqne   r2, #0
  17                 bne     1b
  18                 teq     r2, #0
  19                 moveq   r0, #0
  20                 subne   r0, r0, #1
  21                 RETINSTR(mov,pc,lr)