1  /* Multiple versions of strchr.
       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  /* Define multiple versions only for definition in libc.  */
      20  #if defined SHARED && IS_IN (libc)
      21  # define strchr __redirect_strchr
      22  /* Omit the strchr inline definitions because it would redefine strchr.  */
      23  # define __NO_STRING_INLINES
      24  # include <string.h>
      25  # include <shlib-compat.h>
      26  # include "init-arch.h"
      27  
      28  extern __typeof (strchr) __strchr_ppc attribute_hidden;
      29  extern __typeof (strchr) __strchr_power7 attribute_hidden;
      30  # undef strchr
      31  
      32  /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
      33     ifunc symbol properly.  */
      34  libc_ifunc_redirected (__redirect_strchr,  strchr,
      35  		       (hwcap & PPC_FEATURE_HAS_VSX)
      36  		       ? __strchr_power7
      37  		       : __strchr_ppc);
      38  weak_alias (strchr, index)
      39  #endif