Implement native function pointer check, addr conversion and register, update documents (#185)

Modified WASM runtime API:
- wasm_runtime_module_malloc()
- wasm_runtime_lookup_function()
Introduced runtime API
- wasm_runtime_register_natives()

samples/gui/README.md

@@ -112,3 +112,9 @@ First, connect PC and STM32 with UART. Then install to use host_tool.</br>
 - Install AOT version WASM application
 `wamrc --target=thumbv7 --target-abi=eabi --cpu=cortex-m7 -o ui_app.aot ui_app.wasm`
 `./host_tool -D /dev/ttyUSBXXX -i ui_app -f ui_app.aot`
+
+
+
+The graphic user interface demo photo:
+
+![WAMR samples diagram](../../doc/pics/vgl_demo.png "WAMR samples diagram")

samples/gui/wasm-runtime-wgl/linux-build/CMakeLists.txt

@@ -42,7 +42,6 @@ include_directories(
 set (SOURCES
      ${PROJECT_SRC_DIR}/main.c
      ${PROJECT_SRC_DIR}/iwasm_main.c
-     ${PROJECT_SRC_DIR}/../../ext_lib_export.c
      ${LV_DRIVERS_SOURCES}
      )
 

samples/gui/wasm-runtime-wgl/src/ext_lib_export.c

@@ -1,12 +0,0 @@
-#include "lib_export.h"
-#include "sensor_native_api.h"
-#include "connection_native_api.h"
-#include "gui_native_api.h"
-
-static NativeSymbol extended_native_symbol_defs[] = {
-#include "runtime_sensor.inl"
-#include "connection.inl"
-#include "wamr_gui.inl"
-};
-
-#include "ext_lib_export.h"

samples/gui/wasm-runtime-wgl/zephyr-build/CMakeLists.txt

@@ -73,5 +73,4 @@ target_sources(app PRIVATE
                ${LVGL_DRV_SRCS}
                ${CMAKE_CURRENT_SOURCE_DIR}/../src/platform/zephyr/main.c
                ${CMAKE_CURRENT_SOURCE_DIR}/../src/platform/zephyr/iwasm_main.c
-               ${CMAKE_CURRENT_SOURCE_DIR}/../src/ext_lib_export.c
               )