建立工程，成功创建两个虚拟串口

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

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2015, Xilinx Inc. and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <pthread.h>
+#include <stdlib.h>
+
+#include "metal-test.h"
+#include <metal/atomic.h>
+#include <metal/log.h>
+#include <metal/sys.h>
+
+static const int atomic_test_count = 1000;
+
+static void *atomic_thread(void *arg)
+{
+	atomic_int *c = arg;
+	int i;
+
+	for (i = 0; i < atomic_test_count; i++)
+		atomic_fetch_add(c, 1);
+
+	return NULL;
+}
+
+static int atomic(void)
+{
+	const int threads = 10;
+	atomic_int counter = ATOMIC_VAR_INIT(0);
+	int value, error;
+
+	error = metal_run(threads, atomic_thread, &counter);
+	if (!error) {
+		value = atomic_load(&counter);
+		value -= atomic_test_count * threads;
+		if (value) {
+			metal_log(METAL_LOG_DEBUG, "counter mismatch, delta = %d\n",
+				  value);
+			error = -EINVAL;
+		}
+	}
+
+	return error;
+}
+METAL_ADD_TEST(atomic);