Move generic parts of wasm_suspend_flags.h to bh_atomic.h (#2393)

core/shared/utils/bh_atomic.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2023 Amazon Inc.  All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+ */
+
+#ifndef _BH_ATOMIC_H
+#define _BH_ATOMIC_H
+
+#include "gnuc.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef uint32 bh_atomic_32_t;
+
+#if defined(__GNUC_PREREQ)
+#if __GNUC_PREREQ(4, 7)
+#define CLANG_GCC_HAS_ATOMIC_BUILTIN
+#endif
+#elif defined(__clang__)
+#if __clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ >= 0)
+#define CLANG_GCC_HAS_ATOMIC_BUILTIN
+#endif
+#endif
+
+#if defined(CLANG_GCC_HAS_ATOMIC_BUILTIN)
+#define BH_ATOMIC_32_IS_ATOMIC 1
+#define BH_ATOMIC_32_LOAD(v) __atomic_load_n(&(v), __ATOMIC_SEQ_CST)
+#define BH_ATOMIC_32_FETCH_OR(v, val) \
+    __atomic_fetch_or(&(v), (val), __ATOMIC_SEQ_CST)
+#define BH_ATOMIC_32_FETCH_AND(v, val) \
+    __atomic_fetch_and(&(v), (val), __ATOMIC_SEQ_CST)
+#else /* else of defined(CLANG_GCC_HAS_ATOMIC_BUILTIN) */
+#define BH_ATOMIC_32_LOAD(v) (v)
+#define BH_ATOMIC_32_FETCH_OR(v, val) ((v) |= (val))
+#define BH_ATOMIC_32_FETCH_AND(v, val) ((v) &= (val))
+
+/* The flag can be defined by the user if the platform
+   supports atomic access to uint32 aligned memory. */
+#ifdef WASM_UINT32_IS_ATOMIC
+#define BH_ATOMIC_32_IS_ATOMIC 1
+#else /* else of WASM_UINT32_IS_ATOMIC */
+#define BH_ATOMIC_32_IS_ATOMIC 0
+#endif /* WASM_UINT32_IS_ATOMIC */
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* end of _BH_ATOMIC_H */

core/shared/utils/bh_platform.h

@@ -16,7 +16,6 @@
 #include "bh_log.h"
 #include "bh_queue.h"
 #include "bh_vector.h"
-#include "gnuc.h"
 #include "runtime_timer.h"
 
 /**