建立工程，成功创建两个虚拟串口

source/OpenAMP/libmetal/lib/atomic.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2015, Xilinx Inc. and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * @file	atomic.h
+ * @brief	Atomic primitives for libmetal.
+ */
+
+#ifndef __METAL_ATOMIC__H__
+#define __METAL_ATOMIC__H__
+
+#include <metal/config.h>
+
+#if defined(HAVE_STDATOMIC_H) && !defined(__STDC_NO_ATOMICS__) && \
+	!defined(__cplusplus)
+# include <stdatomic.h>
+#elif defined(__GNUC__)
+# include <metal/compiler/gcc/atomic.h>
+#else
+# include <metal/processor/@PROJECT_PROCESSOR@/atomic.h>
+#endif
+
+#endif /* __METAL_ATOMIC__H__ */