sysdeps/s390/strrchr.c

   1 /* Multiple versions of strrchr.
   2    Copyright (C) 2015-2022 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-strrchr.h>
  20
  21 #if HAVE_STRRCHR_IFUNC
  22 # define strrchr __redirect_strrchr
  23 # include <string.h>
  24 # undef strrchr
  25 # include <ifunc-resolve.h>
  26
  27 # if HAVE_STRRCHR_C
  28 extern __typeof (__redirect_strrchr) STRRCHR_C attribute_hidden;
  29 # endif
  30
  31 # if HAVE_STRRCHR_Z13
  32 extern __typeof (__redirect_strrchr) STRRCHR_Z13 attribute_hidden;
  33 # endif
  34
  35 s390_libc_ifunc_expr (__redirect_strrchr, strrchr,
  36                       (HAVE_STRRCHR_Z13 && (hwcap & HWCAP_S390_VX))
  37                       ? STRRCHR_Z13
  38                       : STRRCHR_DEFAULT
  39                       )
  40 weak_alias (strrchr, rindex)
  41 #endif /* HAVE_STRRCHR_IFUNC  */