建立工程，成功创建两个虚拟串口

source/OpenAMP/libmetal/lib/include/metal/shmem.h

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+/*
+ * Copyright (c) 2015, Xilinx Inc. and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * @file	shmem.h
+ * @brief	Shared memory primitives for libmetal.
+ */
+
+#ifndef __METAL_SHMEM__H__
+#define __METAL_SHMEM__H__
+
+#include <metal/io.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** \defgroup shmem Shared Memory Interfaces
+ *  @{ */
+
+/** Generic shared memory data structure. */
+struct metal_generic_shmem {
+	const char		*name;
+	struct metal_io_region	io;
+	struct metal_list	node;
+};
+
+/**
+ * @brief	Open a libmetal shared memory segment.
+ *
+ * Open a shared memory segment.
+ *
+ * @param[in]		name	Name of segment to open.
+ * @param[in]		size	Size of segment.
+ * @param[out]		io	I/O region handle, if successful.
+ * @return	0 on success, or -errno on failure.
+ *
+ * @see metal_shmem_create
+ */
+extern int metal_shmem_open(const char *name, size_t size,
+			    struct metal_io_region **io);
+
+/**
+ * @brief	Statically register a generic shared memory region.
+ *
+ * Shared memory regions may be statically registered at application
+ * initialization, or may be dynamically opened.  This interface is used for
+ * static registration of regions.  Subsequent calls to metal_shmem_open() look
+ * up in this list of pre-registered regions.
+ *
+ * @param[in]	shmem	Generic shmem structure.
+ * @return 0 on success, or -errno on failure.
+ */
+extern int metal_shmem_register_generic(struct metal_generic_shmem *shmem);
+
+#ifdef METAL_INTERNAL
+
+/**
+ * @brief	Open a statically registered shmem segment.
+ *
+ * This interface is meant for internal libmetal use within system specific
+ * shmem implementations.
+ *
+ * @param[in]		name	Name of segment to open.
+ * @param[in]		size	Size of segment.
+ * @param[out]		io	I/O region handle, if successful.
+ * @return	0 on success, or -errno on failure.
+ */
+int metal_shmem_open_generic(const char *name, size_t size,
+			     struct metal_io_region **result);
+
+#endif
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __METAL_SHMEM__H__ */