sysdeps/s390/ifunc-memcmp.h

   1 /* memcmp variant information on S/390 version.
   2    Copyright (C) 2018-2023 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 #if defined USE_MULTIARCH && IS_IN (libc)       \
  20   && ! defined HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT
  21 # define HAVE_MEMCMP_IFUNC      1
  22 #else
  23 # define HAVE_MEMCMP_IFUNC      0
  24 #endif
  25
  26 #if defined HAVE_S390_MIN_Z196_ZARCH_ASM_SUPPORT
  27 # define MEMCMP_DEFAULT         MEMCMP_Z196
  28 # define HAVE_MEMCMP_Z900_G5    0
  29 # define HAVE_MEMCMP_Z10        0
  30 # define HAVE_MEMCMP_Z196       1
  31 #elif defined HAVE_S390_MIN_Z10_ZARCH_ASM_SUPPORT
  32 # define MEMCMP_DEFAULT         MEMCMP_Z10
  33 # define HAVE_MEMCMP_Z900_G5    0
  34 # define HAVE_MEMCMP_Z10        1
  35 # define HAVE_MEMCMP_Z196       HAVE_MEMCMP_IFUNC
  36 #else
  37 # define MEMCMP_DEFAULT         MEMCMP_Z900_G5
  38 # define HAVE_MEMCMP_Z900_G5    1
  39 # define HAVE_MEMCMP_Z10        HAVE_MEMCMP_IFUNC
  40 # define HAVE_MEMCMP_Z196       HAVE_MEMCMP_IFUNC
  41 #endif
  42
  43 #if HAVE_MEMCMP_Z900_G5
  44 # define MEMCMP_Z900_G5         __memcmp_default
  45 #else
  46 # define MEMCMP_Z900_G5         NULL
  47 #endif
  48
  49 #if HAVE_MEMCMP_Z10
  50 # define MEMCMP_Z10             __memcmp_z10
  51 #else
  52 # define MEMCMP_Z10             NULL
  53 #endif
  54
  55 #if HAVE_MEMCMP_Z196
  56 # define MEMCMP_Z196            __memcmp_z196
  57 #else
  58 # define MEMCMP_Z196            NULL
  59 #endif