sysdeps/powerpc/powerpc64/multiarch/strrchr.c

   1 /* Multiple versions of strrchr. PowerPC64 version.
   2    Copyright (C) 2014-2022 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 /* Define multiple versions only for definition in libc.  */
  20 #if IS_IN (libc)
  21 # define strrchr __redirect_strrchr
  22 # include <string.h>
  23 # include <shlib-compat.h>
  24 # include "init-arch.h"
  25
  26 extern __typeof (strrchr) __strrchr_ppc attribute_hidden;
  27 extern __typeof (strrchr) __strrchr_power7 attribute_hidden;
  28 extern __typeof (strrchr) __strrchr_power8 attribute_hidden;
  29 #undef strrchr
  30
  31 /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
  32    ifunc symbol properly.  */
  33 libc_ifunc_redirected (__redirect_strrchr, strrchr,
  34                        (hwcap2 & PPC_FEATURE2_ARCH_2_07
  35                         && hwcap & PPC_FEATURE_HAS_ALTIVEC)
  36                        ? __strrchr_power8 :
  37                        (hwcap & PPC_FEATURE_ARCH_2_06)
  38                        ? __strrchr_power7
  39                        : __strrchr_ppc);
  40 weak_alias (strrchr, rindex)
  41 #endif