glibc/sysdeps/x86/isa-ifunc-macros.h

/* Common ifunc selection utils
   All versions must be listed in ifunc-impl-list.c.
   Copyright (C) 2022-2023 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */

#ifndef _ISA_IFUNC_MACROS_H
#define _ISA_IFUNC_MACROS_H 1

#include <isa-level.h>
#include <sys/cdefs.h>
#include <stdlib.h>

/* Only include at the level of the minimum build ISA or higher. I.e
   if built with ISA=V1, then include all implementations. On the
   other hand if built with ISA=V3 only include V3/V4
   implementations. If there is no implementation at or above the
   minimum build ISA level, then include the highest ISA level
   implementation.  */
#if MINIMUM_X86_ISA_LEVEL <= 4
# define X86_IFUNC_IMPL_ADD_V4(...) IFUNC_IMPL_ADD (__VA_ARGS__)
#endif
#if MINIMUM_X86_ISA_LEVEL <= 3
# define X86_IFUNC_IMPL_ADD_V3(...) IFUNC_IMPL_ADD (__VA_ARGS__)
#endif
#if MINIMUM_X86_ISA_LEVEL <= 2
# define X86_IFUNC_IMPL_ADD_V2(...) IFUNC_IMPL_ADD (__VA_ARGS__)
#endif
#if MINIMUM_X86_ISA_LEVEL <= 1
# define X86_IFUNC_IMPL_ADD_V1(...) IFUNC_IMPL_ADD (__VA_ARGS__)
#endif

#ifndef X86_IFUNC_IMPL_ADD_V4
# define X86_IFUNC_IMPL_ADD_V4(...)
#endif
#ifndef X86_IFUNC_IMPL_ADD_V3
# define X86_IFUNC_IMPL_ADD_V3(...)
#endif
#ifndef X86_IFUNC_IMPL_ADD_V2
# define X86_IFUNC_IMPL_ADD_V2(...)
#endif
#ifndef X86_IFUNC_IMPL_ADD_V1
# define X86_IFUNC_IMPL_ADD_V1(...)
#endif

#endif