建立工程，成功创建两个虚拟串口

source/OpenAMP/libmetal/test/system/linux/shmem.c

@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2015, Xilinx Inc. and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include "metal-test.h"
+#include <metal/log.h>
+#include <metal/mutex.h>
+#include <metal/shmem.h>
+#include <metal/sys.h>
+#include <metal/atomic.h>
+
+static atomic_int nb_err = ATOMIC_VAR_INIT(0);
+
+static const int shmem_threads = 10;
+
+static void *shmem_child(void *arg)
+{
+	const char *name = arg;
+	struct {
+		metal_mutex_t	mutex;
+		int			counter;
+	} *virt;
+	struct metal_io_region *io;
+	unsigned long phys;
+	size_t size = 2 * 1024 * 1024;
+	int error;
+
+	error = metal_shmem_open(name, size, &io);
+	if (error) {
+		metal_log(METAL_LOG_ERROR, "Failed shmem_open: %d.\n", error);
+		atomic_fetch_add(&nb_err, 1);
+		return NULL;
+	}
+
+	virt = metal_io_virt(io, 0);
+	phys = metal_io_phys(io, 0);
+	if (phys != METAL_BAD_OFFSET) {
+		if (virt != metal_io_phys_to_virt(io, phys)) {
+			atomic_fetch_add(&nb_err, 1);
+			metal_log(METAL_LOG_ERROR, "Failed virt != phys.\n");
+		}
+		if (phys != metal_io_virt_to_phys(io, virt)) {
+			atomic_fetch_add(&nb_err, 1);
+			metal_log(METAL_LOG_ERROR, "Failed phys != virt.\n");
+		}
+	}
+
+	metal_io_finish(io);
+	return NULL;
+}
+
+static int shmem(void)
+{
+	return atomic_load(&nb_err) || metal_run(shmem_threads, shmem_child, "/foo");
+}
+METAL_ADD_TEST(shmem);
+