Import Mbed OS hard-float snapshot

UNITTESTS/stubs/mbed_poll_stub.cpp

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2017, Arm Limited and affiliates.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * 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_poll.h"
+#include "mbed_poll_stub.h"
+
+int mbed_poll_stub::revents_value = POLLOUT;
+int mbed_poll_stub::int_value = 0;
+
+namespace mbed {
+
+int poll(pollfh fhs[], unsigned nfhs, int timeout)
+{
+    fhs->revents = mbed_poll_stub::revents_value;
+    return mbed_poll_stub::int_value;
+}
+
+}