arch/sh/lib/memchr.S

   1 /* $Id: memchr.S,v 1.1 2000/04/14 16:49:01 mjd Exp $
   2  *
   3  * "memchr" implementation of SuperH
   4  *
   5  * Copyright (C) 1999  Niibe Yutaka
   6  *
   7  */
   8
   9 /*
  10  * void *memchr(const void *s, int c, size_t n);
  11  */
  12
  13 #include <linux/linkage.h>
  14 ENTRY(memchr)
  15         tst     r6,r6
  16         bt/s    2f
  17          exts.b r5,r5
  18 1:      mov.b   @r4,r1
  19         cmp/eq  r1,r5
  20         bt/s    3f
  21          dt     r6
  22         bf/s    1b
  23          add    #1,r4
  24 2:      mov     #0,r4
  25 3:      rts
  26          mov    r4,r0