1  /* Default memmem implementation for S/390.
       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-memmem.h>
      20  
      21  #if HAVE_MEMMEM_C
      22  # if HAVE_MEMMEM_IFUNC
      23  #  include <string.h>
      24  
      25  #  ifndef _LIBC
      26  #   define memmem MEMMEM_C
      27  #  else
      28  #   define __memmem MEMMEM_C
      29  #  endif
      30  
      31  #  if defined SHARED && IS_IN (libc)
      32  #   undef libc_hidden_def
      33  #   define libc_hidden_def(name)				\
      34    strong_alias (__memmem_c, __memmem_c_1);			\
      35    __hidden_ver1 (__memmem_c, __GI___memmem, __memmem_c);
      36  
      37  #   undef libc_hidden_weak
      38  #   define libc_hidden_weak(name)					\
      39    __hidden_ver1 (__memmem_c_1, __GI_memmem, __memmem_c_1) __attribute__((weak));
      40  #  endif
      41  
      42  #  undef weak_alias
      43  #  define weak_alias(a, b)
      44  # endif
      45  
      46  # include <string/memmem.c>
      47  #endif