sysdeps/s390/memmem-vx.c

   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