sysdeps/x86_64/multiarch/memmove.c

   1 /* Multiple versions of memmove.
   2    Copyright (C) 2010 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <string.h>
  21
  22 #ifndef NOT_IN_libc
  23 #include "init-arch.h"
  24
  25 #define MEMMOVE __memmove_sse2
  26 #ifdef SHARED
  27 # undef libc_hidden_builtin_def
  28 # define libc_hidden_builtin_def(name) \
  29   __hidden_ver1 (__memmove_sse2, __GI_memmove, __memmove_sse2);
  30 #endif
  31 #endif
  32
  33 extern __typeof (memmove) __memmove_sse2 attribute_hidden;
  34 extern __typeof (memmove) __memmove_ssse3 attribute_hidden;
  35 extern __typeof (memmove) __memmove_ssse3_back attribute_hidden;
  36
  37 #include "string/memmove.c"
  38
  39 #ifndef NOT_IN_libc
  40 libc_ifunc (memmove,
  41             HAS_SSSE3
  42             ? (HAS_FAST_COPY_BACKWARD
  43                ? __memmove_ssse3_back : __memmove_ssse3)
  44             : __memmove_sse2);
  45 #endif