sysdeps/powerpc/powerpc64/multiarch/bzero.c

   1 /* Multiple versions of bzero. PowerPC64 version.
   2    Copyright (C) 2013-2019 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    <http://www.gnu.org/licenses/>.  */
  18
  19 /* Define multiple versions only for definition in libc.  */
  20 #if IS_IN (libc)
  21 # include <string.h>
  22 # include <strings.h>
  23 # include "init-arch.h"
  24
  25 extern __typeof (bzero) __bzero_ppc attribute_hidden;
  26 extern __typeof (bzero) __bzero_power4 attribute_hidden;
  27 extern __typeof (bzero) __bzero_power6 attribute_hidden;
  28 extern __typeof (bzero) __bzero_power7 attribute_hidden;
  29 extern __typeof (bzero) __bzero_power8 attribute_hidden;
  30
  31 libc_ifunc (__bzero,
  32             (hwcap2 & PPC_FEATURE2_ARCH_2_07)
  33             ? __bzero_power8 :
  34               (hwcap & PPC_FEATURE_HAS_VSX)
  35               ? __bzero_power7 :
  36                 (hwcap & PPC_FEATURE_ARCH_2_05)
  37                 ? __bzero_power6 :
  38                   (hwcap & PPC_FEATURE_POWER4)
  39                   ? __bzero_power4
  40             : __bzero_ppc);
  41
  42 weak_alias (__bzero, bzero)
  43 #endif