Add parameter module inst for native wrapper functions (#117)

And add asm code of em64/arm/mips version to call native wrapper functions;
Fix some issues of calling wrapper functions;

core/iwasm/lib/native-interface/timer_api.h

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2019 Intel Corporation.  All rights reserved.
+ *
+ * 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.
+ */
+
+#ifndef _TIMER_API_H_
+#define _TIMER_API_H_
+
+#include "bh_platform.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef unsigned int timer_id_t;
+
+timer_id_t
+wasm_create_timer(int interval, bool is_period, bool auto_start);
+
+void
+wasm_timer_destory(timer_id_t timer_id);
+
+void
+wasm_timer_cancel(timer_id_t timer_id);
+
+void
+wasm_timer_restart(timer_id_t timer_id, int interval);
+
+uint32
+wasm_get_sys_tick_ms(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* end of _TIMER_API_H_ */
+