1  /* Multiple versions of strncmp.
       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 strncmp __redirect_strncmp
      22  /* Omit the strncmp inline definitions because it would redefine strncmp.  */
      23  # define __NO_STRING_INLINES
      24  # include <string.h>
      25  # include <shlib-compat.h>
      26  # include "init-arch.h"
      27  
      28  extern __typeof (strncmp) __strncmp_ppc attribute_hidden;
      29  extern __typeof (strncmp) __strncmp_power8 attribute_hidden;
      30  # ifdef __LITTLE_ENDIAN__
      31  extern __typeof (strncmp) __strncmp_power9 attribute_hidden;
      32  # endif
      33  # undef strncmp
      34  
      35  /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
      36     ifunc symbol properly.  */
      37  libc_ifunc_redirected (__redirect_strncmp, strncmp,
      38  # ifdef __LITTLE_ENDIAN__
      39  			(hwcap2 & PPC_FEATURE2_ARCH_3_00
      40  			 && hwcap & PPC_FEATURE_HAS_ALTIVEC)
      41  			? __strncmp_power9 :
      42  # endif
      43  		       (hwcap2 & PPC_FEATURE2_ARCH_2_07)
      44  		       ? __strncmp_power8
      45  		       : __strncmp_ppc);
      46  #endif