tests: add gdb server test

Change-Id: If15b34ea24b68ea6527fc51c953451b656a10cf5
Signed-off-by: Anas Nashif <anas.nashif@intel.com>

tests/subsys/debug/gdb_server/Makefile

@@ -0,0 +1,4 @@
+BOARD ?= qemu_x86
+CONF_FILE = prj.conf
+
+include ${ZEPHYR_BASE}/Makefile.inc

tests/subsys/debug/gdb_server/prj.conf

@@ -0,0 +1 @@
+CONFIG_GDB_SERVER=y

tests/subsys/debug/gdb_server/src/Makefile

@@ -0,0 +1 @@
+obj-y = main.o

tests/subsys/debug/gdb_server/src/main.c

@@ -0,0 +1,91 @@
+/* main.c - Hello World demo */
+
+/*
+ * Copyright (c) 2012-2014 Wind River Systems, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <zephyr.h>
+#include <misc/printk.h>
+
+/*
+ * The hello world demo has two threads that utilize semaphores and sleeping
+ * to take turns printing a greeting message at a controlled rate. The demo
+ * shows both the static and dynamic approaches for spawning a thread; a real
+ * world application would likely use the static approach for both threads.
+ */
+
+
+/* size of stack area used by each thread */
+#define STACKSIZE 1024
+
+/* scheduling priority used by each thread */
+#define PRIORITY 7
+
+/* delay between greetings (in ms) */
+#define SLEEPTIME 500
+
+
+/*
+ * @param my_name      thread identification string
+ * @param my_sem       thread's own semaphore
+ * @param other_sem    other thread's semaphore
+ */
+void helloLoop(const char *my_name,
+	       struct k_sem *my_sem, struct k_sem *other_sem)
+{
+	while (1) {
+		/* take my semaphore */
+		k_sem_take(my_sem, K_FOREVER);
+
+		/* say "hello" */
+		printk("%s: Hello World from %s!\n", my_name, CONFIG_ARCH);
+
+		/* wait a while, then let other thread have a turn */
+		k_sleep(SLEEPTIME);
+		k_sem_give(other_sem);
+	}
+}
+
+/* define semaphores */
+
+K_SEM_DEFINE(threadA_sem, 1, 1);	/* starts off "available" */
+K_SEM_DEFINE(threadB_sem, 0, 1);	/* starts off "not available" */
+
+
+/* threadB is a dynamic thread that is spawned by threadA */
+
+void threadB(void *dummy1, void *dummy2, void *dummy3)
+{
+	/* invoke routine to ping-pong hello messages with threadA */
+	helloLoop(__func__, &threadB_sem, &threadA_sem);
+}
+
+char __noinit __stack threadB_stack_area[STACKSIZE];
+
+
+/* threadA is a static thread that is spawned automatically */
+
+void threadA(void *dummy1, void *dummy2, void *dummy3)
+{
+	/* spawn threadB */
+	k_thread_spawn(threadB_stack_area, STACKSIZE, threadB, NULL, NULL, NULL,
+		       PRIORITY, 0, K_NO_WAIT);
+
+	/* invoke routine to ping-pong hello messages with threadB */
+	helloLoop(__func__, &threadA_sem, &threadB_sem);
+}
+
+K_THREAD_DEFINE(threadA_id, STACKSIZE, threadA, NULL, NULL, NULL,
+		PRIORITY, 0, K_NO_WAIT);

tests/subsys/debug/gdb_server/testcase.ini

@@ -0,0 +1,4 @@
+[test]
+build_only = true
+tags = apps
+arch_whitelist = x86