sysdeps/s390/mempcpy.c

   1 /* Multiple versions of mempcpy.
   2    Copyright (C) 2016-2024 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-memcpy.h>
  20
  21 #if HAVE_MEMCPY_IFUNC
  22 # define mempcpy __redirect_mempcpy
  23 # define __mempcpy __redirect___mempcpy
  24 # define __NO_STRING_INLINES
  25 # define NO_MEMPCPY_STPCPY_REDIRECT
  26 # include <string.h>
  27 # undef mempcpy
  28 # undef __mempcpy
  29 # include <ifunc-resolve.h>
  30
  31 # if HAVE_MEMCPY_Z900_G5
  32 extern __typeof (__redirect___mempcpy) MEMPCPY_Z900_G5 attribute_hidden;
  33 # endif
  34
  35 # if HAVE_MEMCPY_Z10
  36 extern __typeof (__redirect___mempcpy) MEMPCPY_Z10 attribute_hidden;
  37 # endif
  38
  39 # if HAVE_MEMCPY_Z196
  40 extern __typeof (__redirect___mempcpy) MEMPCPY_Z196 attribute_hidden;
  41 # endif
  42
  43 s390_libc_ifunc_expr (__redirect___mempcpy, __mempcpy,
  44                       ({
  45                         s390_libc_ifunc_expr_stfle_init ();
  46                         (HAVE_MEMCPY_Z196 && S390_IS_Z196 (stfle_bits))
  47                           ? MEMPCPY_Z196
  48                           : (HAVE_MEMCPY_Z10 && S390_IS_Z10 (stfle_bits))
  49                           ? MEMPCPY_Z10
  50                           : MEMPCPY_DEFAULT;
  51                       })
  52                       )
  53 weak_alias (__mempcpy, mempcpy);
  54 #endif