1  /* Default memmem implementation with vector string functions 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_Z13
      22  # include <string.h>
      23  # if HAVE_MEMMEM_IFUNC || MEMMEM_Z13_ONLY_USED_AS_FALLBACK
      24  
      25  #  ifndef _LIBC
      26  #   define memmem MEMMEM_Z13
      27  #  else
      28  #   define __memmem MEMMEM_Z13
      29  #  endif
      30  
      31  #  if defined SHARED && IS_IN (libc)
      32  #   undef libc_hidden_def
      33  #   undef libc_hidden_weak
      34  
      35  #   if HAVE_MEMMEM_C || MEMMEM_Z13_ONLY_USED_AS_FALLBACK
      36  #    define libc_hidden_def(name)
      37  #    define libc_hidden_weak(name)
      38  #   else
      39  #    define libc_hidden_def(name)				\
      40    strong_alias (__memmem_vx, __memmem_vx_1);			\
      41    __hidden_ver1 (__memmem_vx, __GI___memmem, __memmem_vx);
      42  
      43  #    define libc_hidden_weak(name)					\
      44    __hidden_ver1 (__memmem_vx_1, __GI_memmem, __memmem_vx_1) __attribute__((weak));
      45  #   endif
      46  #  endif
      47  
      48  #  undef weak_alias
      49  #  define weak_alias(a, b)
      50  # endif
      51  
      52  # ifdef USE_MULTIARCH
      53  extern __typeof (memchr) __memchr_vx attribute_hidden;
      54  # define memchr __memchr_vx
      55  
      56  extern __typeof (memcmp) __memcmp_z196 attribute_hidden;
      57  # define memcmp __memcmp_z196
      58  # endif
      59  
      60  # include <string/memmem.c>
      61  #endif