1  /* Fallback C version of memmove.
       2     Copyright (C) 2018-2023 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     <https://www.gnu.org/licenses/>.  */
      18  
      19  #include <ifunc-memcpy.h>
      20  
      21  #if HAVE_MEMMOVE_C
      22  # if HAVE_MEMMOVE_IFUNC
      23  /* If we use ifunc, then the memmove symbol is defined
      24     in sysdeps/s390/memmove.c and we use a different name here.
      25     Otherwise, we have to define memmove here or in
      26     sysdeps/s390/memcpy.S depending on the used default implementation.  */
      27  #  define MEMMOVE MEMMOVE_C
      28  #  if defined SHARED && IS_IN (libc)
      29  /* Define the internal symbol.  */
      30  #   undef libc_hidden_builtin_def
      31  #   define libc_hidden_builtin_def(name)			\
      32    __hidden_ver1 (__memmove_c, __GI_memmove, __memmove_c);
      33  #  endif
      34  # endif
      35  
      36  # include <string/memmove.c>
      37  #endif