1  /* Multiple versions of memcmp. PowerPC64 version.
       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 IS_IN (libc)
      21  # define memcmp __redirect_memcmp
      22  # include <string.h>
      23  # include <shlib-compat.h>
      24  # include "init-arch.h"
      25  
      26  extern __typeof (memcmp) __memcmp_ppc attribute_hidden;
      27  extern __typeof (memcmp) __memcmp_power4 attribute_hidden;
      28  extern __typeof (memcmp) __memcmp_power7 attribute_hidden;
      29  extern __typeof (memcmp) __memcmp_power8 attribute_hidden;
      30  extern __typeof (memcmp) __memcmp_power10 attribute_hidden;
      31  # undef memcmp
      32  
      33  /* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
      34     ifunc symbol properly.  */
      35  libc_ifunc_redirected (__redirect_memcmp, memcmp,
      36  #ifdef __LITTLE_ENDIAN__
      37  				(hwcap2 & PPC_FEATURE2_ARCH_3_1
      38  				 && hwcap & PPC_FEATURE_HAS_VSX)
      39  				 ? __memcmp_power10 :
      40  #endif
      41  		       (hwcap2 & PPC_FEATURE2_ARCH_2_07
      42  			&& hwcap & PPC_FEATURE_HAS_ALTIVEC)
      43  		       ? __memcmp_power8 :
      44  		       (hwcap & PPC_FEATURE_ARCH_2_06)
      45  		       ? __memcmp_power7
      46  		       : (hwcap & PPC_FEATURE_POWER4)
      47  			 ? __memcmp_power4
      48  			 : __memcmp_ppc);
      49  #else
      50  #include <string/memcmp.c>
      51  #endif