ostest: Introduce basic setjmp/longjmp test

Signed-off-by: Huang Qi <huangqi3@xiaomi.com>

testing/ostest/Makefile

@@ -119,4 +119,8 @@ CSRCS += prioinherit.c
 endif # CONFIG_PRIORITY_INHERITANCE
 endif # CONFIG_DISABLE_PTHREAD
 
+ifeq ($(CONFIG_ARCH_SETJMP_H),y)
+CSRCS += setjmp.c
+endif
+
 include $(APPDIR)/Application.mk

testing/ostest/ostest.h

@@ -243,6 +243,10 @@ void priority_inheritance(void);
 int vfork_test(void);
 #endif
 
+/* setjmp.c *****************************************************************/
+
+void setjmp_test(void);
+
 /* APIs exported (conditionally) by the OS specifically for testing of
  * priority inheritance
  */

testing/ostest/ostest_main.c

@@ -532,6 +532,14 @@ static int user_main(int argc, char *argv[])
       check_test_memory_usage();
 #endif
 
+#ifdef CONFIG_ARCH_SETJMP_H
+      /* Verify setjmp/longjmp */
+
+      printf("\nuser_main: setjmp test\n");
+      setjmp_test();
+      check_test_memory_usage();
+#endif
+
 #if defined(CONFIG_PRIORITY_INHERITANCE) && !defined(CONFIG_DISABLE_PTHREAD)
       /* Verify priority inheritance */
 

testing/ostest/setjmp.c

@@ -0,0 +1,56 @@
+/****************************************************************************
+ * apps/testing/ostest/setjmp.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you 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.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <assert.h>
+#include <setjmp.h>
+#include <stdio.h>
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+void setjmp_test(void)
+{
+  int value;
+  jmp_buf buf;
+
+  printf("setjmp_test: Initializing jmp_buf\n");
+
+  if ((value = setjmp(buf)) == 0)
+    {
+      printf("setjmp_test: Try jump\n");
+      longjmp(buf, 123);
+
+      /* Unreachable */
+
+      ASSERT(0);
+    }
+  else
+    {
+      ASSERT(value == 123);
+      printf("setjmp_test: Jump succeed\n");
+    }
+}