LXR linux/arch/sparc/lib/memcmp.S

   1/* SPDX-License-Identifier: GPL-2.0 */
   2/* Sparc optimized memcmp code.
   3 *
   4 * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
   5 * Copyright (C) 2000, 2008 David S. Miller (davem@davemloft.net)
   6 */
   7
   8#include <linux/linkage.h>
   9#include <asm/asm.h>
  10#include <asm/export.h>
  11
  12        .text
  13ENTRY(memcmp)
  14        cmp     %o2, 0
  151:      BRANCH32(be, pn, 2f)
  16         nop
  17        ldub    [%o0], %g7
  18        ldub    [%o1], %g3
  19        sub     %o2, 1, %o2
  20        add     %o0, 1, %o0
  21        add     %o1, 1, %o1
  22        subcc   %g7, %g3, %g3
  23        BRANCH32(be, pt, 1b)
  24         cmp    %o2, 0
  25        retl
  26         mov    %g3, %o0
  272:      retl
  28         mov    0, %o0
  29ENDPROC(memcmp)
  30EXPORT_SYMBOL(memcmp)
  31