Enhance wasm loader and interpreter, enhance code security and update document (#149)

samples/littlevgl/build.sh

@@ -5,6 +5,16 @@ WAMR_DIR=${PWD}/../..
 OUT_DIR=${PWD}/out
 BUILD_DIR=${PWD}/build
 
+if [ -z $KW_BUILD ] || [ -z $KW_OUT_FILE ];then
+    echo "Local Build Env"
+    cmakewrap="cmake"
+    makewrap="make"
+else
+    echo "Klocwork Build Env"
+    cmakewrap="cmake -DCMAKE_BUILD_TYPE=Debug"
+    makewrap="kwinject -o $KW_OUT_FILE make"
+fi
+
 if [ ! -d $BUILD_DIR ]; then
     mkdir ${BUILD_DIR}
 fi
@@ -28,8 +38,8 @@ echo "##################### 1. build native-ui-app start#####################"
 cd $BUILD_DIR
 mkdir -p vgl-native-ui-app
 cd vgl-native-ui-app
-cmake ${PROJECT_DIR}/vgl-native-ui-app
-make
+$cmakewrap ${PROJECT_DIR}/vgl-native-ui-app
+$makewrap
 if [ $? != 0 ];then
     echo "BUILD_FAIL native-ui-app $?\n"
     exit 2
@@ -43,8 +53,8 @@ echo "##################### 2. build littlevgl wasm runtime start###############
 cd $BUILD_DIR
 mkdir -p vgl-wasm-runtime
 cd vgl-wasm-runtime
-cmake ${PROJECT_DIR}/vgl-wasm-runtime
-make
+$cmakewrap ${PROJECT_DIR}/vgl-wasm-runtime
+$makewrap
 cp vgl_wasm_runtime ${OUT_DIR}/
 
 echo "##################### build littlevgl wasm runtime end#####################"
@@ -53,8 +63,8 @@ echo "#####################build host-tool"
 cd $BUILD_DIR
 mkdir -p host-tool
 cd host-tool
-cmake ${WAMR_DIR}/test-tools/host-tool
-make
+$cmakewrap ${WAMR_DIR}/test-tools/host-tool
+$makewrap
 if [ $? != 0 ];then
         echo "BUILD_FAIL host tool exit as $?\n"
         exit 2

samples/littlevgl/vgl-wasm-runtime/src/platform/linux/display_indev.c

@@ -193,7 +193,7 @@ display_input_read(wasm_module_inst_t module_inst,
         uint8 state;
     } *data_app;
 
-    lv_indev_data_t data;
+    lv_indev_data_t data = {0};
 
     ret = mouse_read(&data);
 

samples/littlevgl/vgl-wasm-runtime/src/platform/linux/iwasm_main.c

@@ -43,8 +43,9 @@ static char *uart_device = "/dev/ttyS2";
 static int baudrate = B115200;
 #endif
 
-extern void * thread_timer_check(void *);
 extern void init_sensor_framework();
+extern void exit_sensor_framework();
+extern void exit_connection_framework();
 extern int aee_host_msg_callback(void *msg, uint16_t msg_len);
 extern bool init_connection_framework();
 
@@ -470,9 +471,14 @@ int iwasm_main(int argc, char *argv[])
     vm_thread_create(&tid, func_uart_mode, NULL, BH_APPLET_PRESERVED_STACK_SIZE);
 #endif
 
-    // TODO:
     app_manager_startup(&interface);
 
-    fail1: bh_memory_destroy();
+    exit_wasm_timer();
+    exit_sensor_framework();
+    exit_connection_framework();
+
+fail1:
+    bh_memory_destroy();
+
     return -1;
 }

samples/littlevgl/vgl-wasm-runtime/src/platform/linux/main.c

@@ -2,8 +2,8 @@
  * Copyright (C) 2019 Intel Corporation.  All rights reserved.
  * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  */
-extern void iwasm_main(int argc, char *argv[]);
+extern int iwasm_main(int argc, char *argv[]);
 int main(int argc, char *argv[])
 {
-    iwasm_main(argc,argv);
+    return iwasm_main(argc,argv);
 }

samples/littlevgl/vgl-wasm-runtime/src/platform/zephyr/display_ili9340.c

@@ -15,7 +15,7 @@
 #define LOG_WRN printf
 
 #include <gpio.h>
-#include <misc/byteorder.h>
+#include <sys/byteorder.h>
 #include <spi.h>
 #include <string.h>
 

samples/littlevgl/vgl-wasm-runtime/src/platform/zephyr/iwasm_main.c

@@ -16,8 +16,8 @@
 #include "module_wasm_app.h"
 #include "wasm_export.h"
 
-extern void * thread_timer_check(void *);
 extern void init_sensor_framework();
+extern void exit_sensor_framework();
 extern int aee_host_msg_callback(void *msg, uint16_t msg_len);
 
 #include <zephyr.h>

samples/littlevgl/wasm-apps/build_wasm_app.sh

@@ -2,8 +2,19 @@
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
 #!/bin/sh
+
+WAMR_DIR=${PWD}/../../..
+
+if [ -z $KW_BUILD ] || [ -z $KW_OUT_FILE ];then
+    echo "Local Build Env"
+    makewrap="make"
+else
+    echo "Klocwork Build Env"
+    makewrap="kwinject -o $KW_OUT_FILE make"
+fi
+
 if [ ! -d "lvgl" ]; then
     git clone https://github.com/littlevgl/lvgl.git --branch v5.3
 fi
-make -f Makefile_wasm_app
+$makewrap -f Makefile_wasm_app
 

samples/littlevgl/wasm-apps/src/main.c

@@ -104,7 +104,10 @@ void on_init()
     /* set up a timer */
     user_timer_t timer;
     timer = api_timer_create(10, true, false, timer1_update);
-    api_timer_restart(timer, 10);
+    if (timer)
+        api_timer_restart(timer, 10);
+    else
+        printf("Fail to create timer.\n");
 }
 
 /**********************