sysdeps/s390/bzero.c

   1 /* Multiple versions of bzero.
   2    Copyright (C) 2018-2019 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    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <ifunc-memset.h>
  20 #if HAVE_MEMSET_IFUNC
  21 # include <string.h>
  22 # include <ifunc-resolve.h>
  23
  24 # if HAVE_MEMSET_Z900_G5
  25 extern __typeof (__bzero) BZERO_Z900_G5 attribute_hidden;
  26 # endif
  27
  28 # if HAVE_MEMSET_Z10
  29 extern __typeof (__bzero) BZERO_Z10 attribute_hidden;
  30 # endif
  31
  32 # if HAVE_MEMSET_Z196
  33 extern __typeof (__bzero) BZERO_Z196 attribute_hidden;
  34 # endif
  35
  36 s390_libc_ifunc_expr (__bzero, __bzero,
  37                       ({
  38                         s390_libc_ifunc_expr_stfle_init ();
  39                         (HAVE_MEMSET_Z196 && S390_IS_Z196 (stfle_bits))
  40                           ? BZERO_Z196
  41                           : (HAVE_MEMSET_Z10 && S390_IS_Z10 (stfle_bits))
  42                           ? BZERO_Z10
  43                           : BZERO_DEFAULT;
  44                       })
  45                       )
  46 weak_alias (__bzero, bzero)
  47 #endif