sysdeps/arm/armv7/multiarch/memcpy.c

   1 /* Multiple versions of memcpy.
   2    All versions must be listed in ifunc-impl-list.c.
   3    Copyright (C) 2017-2019 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 /* For __ARM_NEON__ memchr_neon.S defines memchr directly and ifunc
  21    is not used.  */
  22 #if IS_IN (libc) && !defined (__ARM_NEON__)
  23 # define memcpy __redirect_memcpy
  24 # include <string.h>
  25 # undef memcpy
  26
  27 # include <arm-ifunc.h>
  28
  29 # define SYMBOL_NAME memcpy
  30 # include "ifunc-memcpy.h"
  31
  32 arm_libc_ifunc_redirected (__redirect_memcpy, memcpy, IFUNC_SELECTOR);
  33
  34 arm_libc_ifunc_hidden_def (__redirect_memcpy, memcpy);
  35 #endif