sysdeps/i386/i686/multiarch/wmemcmp.S

   1 /* Multiple versions of wmemcmp
   2    All versions must be listed in ifunc-impl-list.c.
   3    Copyright (C) 2011-2016 Free Software Foundation, Inc.
   4    Contributed by Intel Corporation.
   5    This file is part of the GNU C Library.
   6
   7    The GNU C Library is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU Lesser General Public
   9    License as published by the Free Software Foundation; either
  10    version 2.1 of the License, or (at your option) any later version.
  11
  12    The GNU C Library is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    Lesser General Public License for more details.
  16
  17    You should have received a copy of the GNU Lesser General Public
  18    License along with the GNU C Library; if not, see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21 #include <sysdep.h>
  22 #include <init-arch.h>
  23
  24 /* Define multiple versions only for the definition in libc. */
  25
  26 #if IS_IN (libc)
  27         .text
  28 ENTRY(wmemcmp)
  29         .type   wmemcmp, @gnu_indirect_function
  30         LOAD_GOT_AND_RTLD_GLOBAL_RO
  31         LOAD_FUNC_GOT_EAX (__wmemcmp_ia32)
  32         HAS_CPU_FEATURE (SSSE3)
  33         jz      2f
  34         LOAD_FUNC_GOT_EAX (__wmemcmp_ssse3)
  35         HAS_CPU_FEATURE (SSE4_2)
  36         jz      2f
  37         LOAD_FUNC_GOT_EAX (__wmemcmp_sse4_2)
  38 2:      ret
  39 END(wmemcmp)
  40 #endif