include/urcu/uatomic/builtins.h

   1 /*
   2  * urcu/uatomic/builtins.h
   3  *
   4  * Copyright (c) 2023 Olivier Dion <odion@efficios.com>
   5  *
   6  * This 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  * This 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 this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 #ifndef _URCU_UATOMIC_BUILTINS_H
  22 #define _URCU_UATOMIC_BUILTINS_H
  23
  24 #include <urcu/arch.h>
  25
  26 #if defined(__has_builtin)
  27 # if !__has_builtin(__atomic_store_n)
  28 #  error "Toolchain does not support __atomic_store_n."
  29 # endif
  30 # if !__has_builtin(__atomic_load_n)
  31 #  error "Toolchain does not support __atomic_load_n."
  32 # endif
  33 # if !__has_builtin(__atomic_exchange_n)
  34 #  error "Toolchain does not support __atomic_exchange_n."
  35 # endif
  36 # if !__has_builtin(__atomic_compare_exchange_n)
  37 #  error "Toolchain does not support __atomic_compare_exchange_n."
  38 # endif
  39 # if !__has_builtin(__atomic_add_fetch)
  40 #  error "Toolchain does not support __atomic_add_fetch."
  41 # endif
  42 # if !__has_builtin(__atomic_sub_fetch)
  43 #  error "Toolchain does not support __atomic_sub_fetch."
  44 # endif
  45 # if !__has_builtin(__atomic_or_fetch)
  46 #  error "Toolchain does not support __atomic_or_fetch."
  47 # endif
  48 # if !__has_builtin(__atomic_thread_fence)
  49 #  error "Toolchain does not support __atomic_thread_fence."
  50 # endif
  51 # if !__has_builtin(__atomic_signal_fence)
  52 #  error "Toolchain does not support __atomic_signal_fence."
  53 # endif
  54 #elif defined(__GNUC__)
  55 # define GCC_VERSION (__GNUC__       * 10000 + \
  56                        __GNUC_MINOR__ * 100   + \
  57                        __GNUC_PATCHLEVEL__)
  58 # if  GCC_VERSION < 40700
  59 #  error "GCC version is too old. Version must be 4.7 or greater"
  60 # endif
  61 # undef  GCC_VERSION
  62 #else
  63 # error "Toolchain is not supported."
  64 #endif
  65
  66 #if defined(__GNUC__)
  67 # define UATOMIC_HAS_ATOMIC_BYTE  __GCC_ATOMIC_CHAR_LOCK_FREE
  68 # define UATOMIC_HAS_ATOMIC_SHORT __GCC_ATOMIC_SHORT_LOCK_FREE
  69 #elif defined(__clang__)
  70 # define UATOMIC_HAS_ATOMIC_BYTE  __CLANG_ATOMIC_CHAR_LOCK_FREE
  71 # define UATOMIC_HAS_ATOMIC_SHORT __CLANG_ATOMIC_SHORT_LOCK_FREE
  72 #else
  73 /* #  define UATOMIC_HAS_ATOMIC_BYTE  */
  74 /* #  define UATOMIC_HAS_ATOMIC_SHORT */
  75 #endif
  76
  77 #include <urcu/uatomic/builtins-generic.h>
  78
  79 #endif  /* _URCU_UATOMIC_BUILTINS_H */