Add CMM memory model

[urcu.git] / include / urcu / uatomic / builtins.h

diff --git a/include/urcu/uatomic/builtins.h b/include/urcu/uatomic/builtins.h
new file mode 100644 (file)
index 0000000..82e98f8
--- /dev/null
+++ b/include/urcu/uatomic/builtins.h
@@ -0,0 +1,79 @@
+/*
+ * urcu/uatomic/builtins.h
+ *
+ * Copyright (c) 2023 Olivier Dion <odion@efficios.com>
+ *
+ * This 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.
+ *
+ * This 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _URCU_UATOMIC_BUILTINS_H
+#define _URCU_UATOMIC_BUILTINS_H
+
+#include <urcu/arch.h>
+
+#if defined(__has_builtin)
+# if !__has_builtin(__atomic_store_n)
+#  error "Toolchain does not support __atomic_store_n."
+# endif
+# if !__has_builtin(__atomic_load_n)
+#  error "Toolchain does not support __atomic_load_n."
+# endif
+# if !__has_builtin(__atomic_exchange_n)
+#  error "Toolchain does not support __atomic_exchange_n."
+# endif
+# if !__has_builtin(__atomic_compare_exchange_n)
+#  error "Toolchain does not support __atomic_compare_exchange_n."
+# endif
+# if !__has_builtin(__atomic_add_fetch)
+#  error "Toolchain does not support __atomic_add_fetch."
+# endif
+# if !__has_builtin(__atomic_sub_fetch)
+#  error "Toolchain does not support __atomic_sub_fetch."
+# endif
+# if !__has_builtin(__atomic_or_fetch)
+#  error "Toolchain does not support __atomic_or_fetch."
+# endif
+# if !__has_builtin(__atomic_thread_fence)
+#  error "Toolchain does not support __atomic_thread_fence."
+# endif
+# if !__has_builtin(__atomic_signal_fence)
+#  error "Toolchain does not support __atomic_signal_fence."
+# endif
+#elif defined(__GNUC__)
+# define GCC_VERSION (__GNUC__       * 10000 + \
+                      __GNUC_MINOR__ * 100   + \
+                      __GNUC_PATCHLEVEL__)
+# if  GCC_VERSION < 40700
+#  error "GCC version is too old. Version must be 4.7 or greater"
+# endif
+# undef  GCC_VERSION
+#else
+# error "Toolchain is not supported."
+#endif
+
+#if defined(__GNUC__)
+# define UATOMIC_HAS_ATOMIC_BYTE  __GCC_ATOMIC_CHAR_LOCK_FREE
+# define UATOMIC_HAS_ATOMIC_SHORT __GCC_ATOMIC_SHORT_LOCK_FREE
+#elif defined(__clang__)
+# define UATOMIC_HAS_ATOMIC_BYTE  __CLANG_ATOMIC_CHAR_LOCK_FREE
+# define UATOMIC_HAS_ATOMIC_SHORT __CLANG_ATOMIC_SHORT_LOCK_FREE
+#else
+/* #  define UATOMIC_HAS_ATOMIC_BYTE  */
+/* #  define UATOMIC_HAS_ATOMIC_SHORT */
+#endif
+
+#include <urcu/uatomic/builtins-generic.h>
+
+#endif /* _URCU_UATOMIC_BUILTINS_H */