sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c

   1 /* Multiple versions of memchr.
   2    Copyright (C) 2013-2015 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 # undef memcpy
  21 /* Redefine memchr so that the compiler won't make the weak_alias point
  22    to internal hidden definition (__GI_memchr), since PPC32 does not
  23    support local IFUNC calls.  */
  24 # define memchr __redirect_memchr
  25 # include <string.h>
  26 # include "init-arch.h"
  27
  28 extern __typeof (__redirect_memchr) __memchr_ppc attribute_hidden;
  29 extern __typeof (__redirect_memchr) __memchr_power7 attribute_hidden;
  30
  31 extern __typeof (__redirect_memchr) __libc_memchr;
  32
  33 libc_ifunc (__libc_memchr,
  34             (hwcap & PPC_FEATURE_HAS_VSX)
  35             ? __memchr_power7
  36             : __memchr_ppc);
  37 #undef memchr
  38 weak_alias (__libc_memchr, memchr)
  39 #else
  40 #include <string/memchr.c>
  41 #endif