sysdeps/powerpc/powerpc64/multiarch/memrchr.c

   1 /* Multiple versions of memrchr.
   2    Copyright (C) 2013-2018 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #if IS_IN (libc)
  20 # include <string.h>
  21 # include <shlib-compat.h>
  22 # include "init-arch.h"
  23
  24 extern __typeof (__memrchr) __memrchr_ppc attribute_hidden;
  25 extern __typeof (__memrchr) __memrchr_power7 attribute_hidden;
  26 extern __typeof (__memrchr) __memrchr_power8 attribute_hidden;
  27
  28 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
  29    ifunc symbol properly.  */
  30 libc_ifunc (__memrchr,
  31             (hwcap2 & PPC_FEATURE2_ARCH_2_07)
  32             ? __memrchr_power8 :
  33               (hwcap & PPC_FEATURE_HAS_VSX)
  34               ? __memrchr_power7
  35             : __memrchr_ppc);
  36
  37 weak_alias (__memrchr, memrchr)
  38 #else
  39 #include <string/memrchr.c>
  40 #endif