1  /* Multiple versions of memchr.
       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  # undef memchr
      21  /* Redefine memchr so that the compiler won't make the weak_alias point
      22     to internal hidden definition (__GI_memchr), since PPC32 does not
      23     support local IFUNC calls.  */
      24  # define memchr __redirect_memchr
      25  # include <string.h>
      26  # include "init-arch.h"
      27  
      28  extern __typeof (__redirect_memchr) __memchr_ppc attribute_hidden;
      29  extern __typeof (__redirect_memchr) __memchr_power7 attribute_hidden;
      30  
      31  extern __typeof (__redirect_memchr) __libc_memchr;
      32  
      33  libc_ifunc (__libc_memchr,
      34  	    (hwcap & PPC_FEATURE_HAS_VSX)
      35              ? __memchr_power7
      36              : __memchr_ppc);
      37  #undef memchr
      38  weak_alias (__libc_memchr, memchr)
      39  #else
      40  #include <string/memchr.c>
      41  #endif