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()

core/app-framework/sensor/native/runtime_sensor.c

@@ -135,15 +135,9 @@ wasm_sensor_config(wasm_exec_env_t exec_env,
 
 uint32
 wasm_sensor_open(wasm_exec_env_t exec_env,
-                 int32 name_offset, int instance)
+                 char *name, int instance)
 {
     wasm_module_inst_t module_inst = get_module_inst(exec_env);
-    char *name = NULL;
-
-    if (!validate_app_str_addr(name_offset))
-        return -1;
-
-    name = addr_app_to_native(name_offset);
 
     if (name != NULL) {
         sensor_client_t *c;
@@ -192,17 +186,8 @@ wasm_sensor_open(wasm_exec_env_t exec_env,
 
 bool
 wasm_sensor_config_with_attr_container(wasm_exec_env_t exec_env,
-                                       uint32 sensor, int32 buffer_offset,
-                                       int len)
+                                       uint32 sensor, char *buffer, int len)
 {
-    wasm_module_inst_t module_inst = get_module_inst(exec_env);
-    char *buffer = NULL;
-
-    if (!validate_app_addr(buffer_offset, len))
-        return false;
-
-    buffer = addr_app_to_native(buffer_offset);
-
     if (buffer != NULL) {
         attr_container_t *cfg = (attr_container_t *)buffer;
         sensor_obj_t s = find_sys_sensor_id(sensor);

core/app-framework/sensor/native/runtime_sensor.inl

@@ -3,7 +3,7 @@
  * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  */
 
-EXPORT_WASM_API(wasm_sensor_open),
-EXPORT_WASM_API(wasm_sensor_config),
-EXPORT_WASM_API(wasm_sensor_config_with_attr_container),
-EXPORT_WASM_API(wasm_sensor_close),
+EXPORT_WASM_API_WITH_SIG(wasm_sensor_open, "($i)i"),
+EXPORT_WASM_API_WITH_SIG(wasm_sensor_config, "(iiii)i"),
+EXPORT_WASM_API_WITH_SIG(wasm_sensor_config_with_attr_container, "(i*~)i"),
+EXPORT_WASM_API_WITH_SIG(wasm_sensor_close, "(i)i"),

core/app-framework/sensor/native/sensor_native_api.h

@@ -19,12 +19,11 @@ wasm_sensor_config(wasm_exec_env_t exec_env,
                    int bit_cfg, int delay);
 uint32
 wasm_sensor_open(wasm_exec_env_t exec_env,
-                 int32 name_offset, int instance);
+                 char *name, int instance);
 
 bool
 wasm_sensor_config_with_attr_container(wasm_exec_env_t exec_env,
-                                       uint32 sensor, int32 buffer_offset,
-                                       int len);
+                                       uint32 sensor, char *buffer, int len);
 
 bool
 wasm_sensor_close(wasm_exec_env_t exec_env, uint32 sensor);

core/app-framework/sensor/native/wasm_lib.cmake

@@ -3,6 +3,8 @@
 
 set (WASM_LIB_SENSOR_DIR ${CMAKE_CURRENT_LIST_DIR})
 
+add_definitions (-DAPP_FRAMEWORK_SENSOR)
+
 include_directories(${WASM_LIB_SENSOR_DIR})