1  /* Multiple versions of memrchr.
       2     Copyright (C) 2013-2023 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  #if IS_IN (libc)
      20  # define memrchr __redirect_memrchr
      21  # include <string.h>
      22  # include <shlib-compat.h>
      23  # include "init-arch.h"
      24  
      25  extern __typeof (__memrchr) __memrchr_ppc attribute_hidden;
      26  extern __typeof (__memrchr) __memrchr_power7 attribute_hidden;
      27  extern __typeof (__memrchr) __memrchr_power8 attribute_hidden;
      28  # undef memrchr
      29  
      30  /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
      31     ifunc symbol properly.  */
      32  libc_ifunc_redirected (__redirect_memrchr, memrchr,
      33  		       (hwcap2 & PPC_FEATURE2_ARCH_2_07
      34  			&& hwcap & PPC_FEATURE_HAS_ALTIVEC)
      35  		        ? __memrchr_power8 :
      36  			  (hwcap & PPC_FEATURE_ARCH_2_06)
      37  			  ? __memrchr_power7
      38  			  : __memrchr_ppc);
      39  #else
      40  #include <string/memrchr.c>
      41  #endif