include/urcu/uatomic/builtins.h

   1 // SPDX-FileCopyrightText: 2023 Olivier Dion <odion@efficios.com>
   2 //
   3 // SPDX-License-Identifier: LGPL-2.1-or-later
   4
   5 /*
   6  * urcu/uatomic/builtins.h
   7  */
   8
   9 #ifndef _URCU_UATOMIC_BUILTINS_H
  10 #define _URCU_UATOMIC_BUILTINS_H
  11
  12 #include <urcu/arch.h>
  13
  14 #if defined(__has_builtin)
  15 # if !__has_builtin(__atomic_store_n)
  16 #  error "Toolchain does not support __atomic_store_n."
  17 # endif
  18 # if !__has_builtin(__atomic_load_n)
  19 #  error "Toolchain does not support __atomic_load_n."
  20 # endif
  21 # if !__has_builtin(__atomic_exchange_n)
  22 #  error "Toolchain does not support __atomic_exchange_n."
  23 # endif
  24 # if !__has_builtin(__atomic_compare_exchange_n)
  25 #  error "Toolchain does not support __atomic_compare_exchange_n."
  26 # endif
  27 # if !__has_builtin(__atomic_add_fetch)
  28 #  error "Toolchain does not support __atomic_add_fetch."
  29 # endif
  30 # if !__has_builtin(__atomic_sub_fetch)
  31 #  error "Toolchain does not support __atomic_sub_fetch."
  32 # endif
  33 # if !__has_builtin(__atomic_or_fetch)
  34 #  error "Toolchain does not support __atomic_or_fetch."
  35 # endif
  36 # if !__has_builtin(__atomic_thread_fence)
  37 #  error "Toolchain does not support __atomic_thread_fence."
  38 # endif
  39 # if !__has_builtin(__atomic_signal_fence)
  40 #  error "Toolchain does not support __atomic_signal_fence."
  41 # endif
  42 #elif defined(__GNUC__)
  43 # define GCC_VERSION (__GNUC__       * 10000 + \
  44                        __GNUC_MINOR__ * 100   + \
  45                        __GNUC_PATCHLEVEL__)
  46 # if  GCC_VERSION < 40700
  47 #  error "GCC version is too old. Version must be 4.7 or greater"
  48 # endif
  49 # undef  GCC_VERSION
  50 #else
  51 # error "Toolchain is not supported."
  52 #endif
  53
  54 #if defined(__GNUC__)
  55 # define UATOMIC_HAS_ATOMIC_BYTE  __GCC_ATOMIC_CHAR_LOCK_FREE
  56 # define UATOMIC_HAS_ATOMIC_SHORT __GCC_ATOMIC_SHORT_LOCK_FREE
  57 #elif defined(__clang__)
  58 # define UATOMIC_HAS_ATOMIC_BYTE  __CLANG_ATOMIC_CHAR_LOCK_FREE
  59 # define UATOMIC_HAS_ATOMIC_SHORT __CLANG_ATOMIC_SHORT_LOCK_FREE
  60 #else
  61 /* #  define UATOMIC_HAS_ATOMIC_BYTE  */
  62 /* #  define UATOMIC_HAS_ATOMIC_SHORT */
  63 #endif
  64
  65 #include <urcu/uatomic/builtins-generic.h>
  66
  67 #endif  /* _URCU_UATOMIC_BUILTINS_H */