sysdeps/x86/isa-ifunc-macros.h

   1 /* Common ifunc selection utils
   2    All versions must be listed in ifunc-impl-list.c.
   3    Copyright (C) 2022 Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #ifndef _ISA_IFUNC_MACROS_H
  21 #define _ISA_IFUNC_MACROS_H 1
  22
  23 #include <isa-level.h>
  24 #include <sys/cdefs.h>
  25 #include <stdlib.h>
  26
  27 /* Only include at the level of the minimum build ISA or higher. I.e
  28    if built with ISA=V1, then include all implementations. On the
  29    other hand if built with ISA=V3 only include V3/V4
  30    implementations. If there is no implementation at or above the
  31    minimum build ISA level, then include the highest ISA level
  32    implementation.  */
  33 #if MINIMUM_X86_ISA_LEVEL <= 4
  34 # define X86_IFUNC_IMPL_ADD_V4(...) IFUNC_IMPL_ADD (__VA_ARGS__)
  35 #endif
  36 #if MINIMUM_X86_ISA_LEVEL <= 3
  37 # define X86_IFUNC_IMPL_ADD_V3(...) IFUNC_IMPL_ADD (__VA_ARGS__)
  38 #endif
  39 #if MINIMUM_X86_ISA_LEVEL <= 2
  40 # define X86_IFUNC_IMPL_ADD_V2(...) IFUNC_IMPL_ADD (__VA_ARGS__)
  41 #endif
  42 #if MINIMUM_X86_ISA_LEVEL <= 1
  43 # define X86_IFUNC_IMPL_ADD_V1(...) IFUNC_IMPL_ADD (__VA_ARGS__)
  44 #endif
  45
  46 #ifndef X86_IFUNC_IMPL_ADD_V4
  47 # define X86_IFUNC_IMPL_ADD_V4(...)
  48 #endif
  49 #ifndef X86_IFUNC_IMPL_ADD_V3
  50 # define X86_IFUNC_IMPL_ADD_V3(...)
  51 #endif
  52 #ifndef X86_IFUNC_IMPL_ADD_V2
  53 # define X86_IFUNC_IMPL_ADD_V2(...)
  54 #endif
  55 #ifndef X86_IFUNC_IMPL_ADD_V1
  56 # define X86_IFUNC_IMPL_ADD_V1(...)
  57 #endif
  58
  59 #endif