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