utest - add mbed shim layer

frameworks/utest/mbed-utest-shim.cpp

@@ -0,0 +1,32 @@
+
+/* mbed Microcontroller Library
+ * Copyright (c) 2013-2016 ARM Limited
+ *
+ * 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 "mbed.h"
+#include "utest/utest.h"
+
+using namespace utest::v1;
+
+void utest_v1_enter_critical_section(void)
+{
+    // will replaced by CriticalSectionLock
+    __disable_irq();
+}
+
+void utest_v1_leave_critical_section(void)
+{
+    __enable_irq();
+}