sysdeps/x86_64/multiarch/mempcpy.c

   1 /* Multiple versions of mempcpy.
   2    All versions must be listed in ifunc-impl-list.c.
   3    Copyright (C) 2017-2021 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 /* Define multiple versions only for the definition in libc.  */
  21 #if IS_IN (libc)
  22 # define mempcpy __redirect_mempcpy
  23 # define __mempcpy __redirect___mempcpy
  24 # define NO_MEMPCPY_STPCPY_REDIRECT
  25 # define __NO_STRING_INLINES
  26 # include <string.h>
  27 # undef mempcpy
  28 # undef __mempcpy
  29
  30 # define SYMBOL_NAME mempcpy
  31 # include "ifunc-memmove.h"
  32
  33 libc_ifunc_redirected (__redirect_mempcpy, __mempcpy, IFUNC_SELECTOR ());
  34
  35 weak_alias (__mempcpy, mempcpy)
  36 # ifdef SHARED
  37 __hidden_ver1 (__mempcpy, __GI___mempcpy, __redirect___mempcpy)
  38   __attribute__ ((visibility ("hidden"))) __attribute_copy__ (mempcpy);
  39 __hidden_ver1 (mempcpy, __GI_mempcpy, __redirect_mempcpy)
  40   __attribute__ ((visibility ("hidden"))) __attribute_copy__ (mempcpy);
  41 # endif
  42 #endif