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6.8 KiB
6.8 KiB
LiteOS
一、环境安装
1. 安装docker环境
[docker加载镜像下载]
链接: https://pan.baidu.com/s/1GVossI98riHL2xEzo7HmMQ?pwd=we75 提取码: we75
$ cd docker_package
$ sudo dpkg -i containerd.io_1.5.11-1_amd64.deb
$ sudo dpkg -i docker-ce-cli_20.10.14_3-0_ubuntu-focal_amd64.deb
$ sudo dpkg -i docker-ce_20.10.14_3-0_ubuntu-focal_amd64.deb
docker加载liteos-env镜像
$ cd docker_images
$ sudo docker load -i openharmony-v31.tar
2. 下载源代码
3. 将用户添加到docker用户组
$ sudo groupadd docker
$ sudo gpasswd -a $USER docker
$ newgrp docker
$ ./run_docker.sh
4.编译liteos-a内核和应用
编译 hb set 使用上下方向键盘选择"qemu_small_system_demo" hb build编译
root@62deba27a240:/home/openharmony# hb set
root@62deba27a240:/home/openharmony# hb build -f
运行
root@62deba27a240:/home/openharmony# ./qemu-run -f
等待内核在qemu下加载完成，回车，进入OHOS shell 如果无法进入，请检查out目录下是否存在smallmmc.img，不存在请复制smallmmc.img到out目录下 并重新编译执行
root@62deba27a240:/home/openharmony# ./qemu-run -f
Redo making flash.img...
Start making flash.img...
1+0 records in
1+0 records out
67108864 bytes (67 MB, 64 MiB) copied, 0.498911 s, 135 MB/s
2191+1 records in
2191+1 records out
1122100 bytes (1.1 MB, 1.1 MiB) copied, 0.0123126 s, 91.1 MB/s
0+1 records in
0+1 records out
89 bytes copied, 0.000333672 s, 267 kB/s
9818+1 records in
9818+1 records out
5027048 bytes (5.0 MB, 4.8 MiB) copied, 0.0291576 s, 172 MB/s
63+1 records in
63+1 records out
32492 bytes (32 kB, 32 KiB) copied, 0.000204982 s, 159 MB/s
Success making flash.img...
Enter to start qemu[y/n]:Waiting VNC connection on: 5920 ...(Ctrl-C exit)
******************Welcome******************
Processor : Cortex-A7
Run Mode : UP
GIC Rev : GICv2
build time : Nov 15 2022 11:40:20
Kernel : Huawei LiteOS 2.0.0.37/debug
*******************************************
main core booting up...
cpu 0 entering scheduler
mem dev init ...
DevMmzRegister...
Date:Nov 15 2022.
Time:11:40:19.
net init ...
[ERR]virtio-mmio ID=1 device not found
[ERR]add virtio-mmio net device failed
************************************************************
DeviceManagerStart start ...
[CfiFlashInit]CFI flash init start ...
[CfiFlashInit]CFI flash init end ...
[CfiFlashInit]CFI flash init start ...
DeviceManagerStart end ...
OsMountRootfs start ...
OsMountRootfs end ...
virtual_serial_init start ...
virtual_serial_init end ...
system_console_init start ...
system_console_init end ...
OsUserInitProcess start ...
OsUserInitProcess end ...
[ERR]Failed to find block driver /dev/mmcblk0
[ERR]Failed to find block driver /dev/mmcblk1
hilog ringbuffer full, drop 19 line(s) log
hilog ringbuffer full, drop 7 line(s) log
hilog ringbuffer full, drop 2 line(s) log
Set log level : 3
Default log level: 3
[ERR]Unsupported API tcgetpgrp
01-01 00:00:00.081 2 4 D 02500/devmgr_service: DevmgrServiceUpdateStatus host:storage_host 2 device:HDF_PLATFORM_CFI_0 0 status:1
...............
01-01 00:00:26.001 7 29 I 01800/Samgr: Goto next boot step return code:-9
01-01 00:00:26.002 7 14 I 00000/(null): [appspawn] HOS_SystemInit is called!
01-01 00:00:26.003 7 14 I 00000/(null): [appspawn] main, entering wait.
回车之后进入OHOS shell
OHOS:/$ cd bin
OHOS:/bin$
测试结束
Ctrl-A + x 退出Qemu模拟环境
二、命令行调试liteOS
1、安装gdb-multiarch工具包(docker 容器中安装)：
$ apt install gdb-multiarch
2、修改debug.config文件
$ cd ./vendor/ohemu/qemu_small_system_demo/kernel_configs
$ vim debug.config
将 LOSCFG_CC_STACKPROTECTOR_ALL=y 修改为:
# LOSCFG_CC_STACKPROTECTOR_ALL is not set
LOSCFG_COMPILE_DEBUG=y
3、重新编译项目
保存并退出，在OHOS根目录重新编译:
$ hb build -f
4、debug LiteOS
在一个窗口中输入命令：
$ ./qemu-run -g
在另一个窗口中输入命令：
$ docker exec -it ohos /bin/bash
$ gdb-multiarch out/arm_virt/qemu_small_system_demo/OHOS_Image
(gdb) target remote localhost:1234
(gdb) b main
Breakpoint 1 at 0x4005110c: file ../../../kernel/liteos_a/kernel/common/main.c, line 36.
(gdb) c
Continuing.
Breakpoint 1, main () at ../../../kernel/liteos_a/kernel/common/main.c:36
36 {
(gdb) l
31
32 #include "los_config.h"
33 #include "los_sched_pri.h"
34
35 LITE_OS_SEC_TEXT_INIT INT32 main(VOID)
36 {
37 UINT32 ret = OsMain();
38 if (ret != LOS_OK) {
39 return (INT32)LOS_NOK;
40 }
(gdb) q
-
gdb 调试常用代码
1、 b (break) :设置断点
2、 r (run): 运行程序
3、 bt (backtrace): 显示程序栈
4、 Print : 打印变量
5、 c (continue): 继续运行程序，直到下一个断点停止
6、 n (next) : 单步运行程序，不进入函数
7、 l (list) : 查看当前代码（显示当前后10行）
8、 edit (+function): 查看函数代码
9、 S (step) : 进入函数执行代码
10、 Q(Quit)：退出gdb
11、 Info b : 查看断点信息
三、VSCode调试liteOS
1、安装VScode
$ sudo apt install code
2、安装VScode 插件
3、连接docker
选择CONTAINERS目录下openharmony:v3.1...，右键选择附加VScode
4、给docker安装VScode插件
- 注意插件一定要安装在docker容器中
5、配置launch.json文件
{
"version": "0.2.0",
"configurations": [
{
"name": "debug liteOS",
"type": "cppdbg",
"request": "launch",
"program": "${workspaceFolder}/out/arm_virt/qemu_small_system_demo/OHOS_Image",
"args": [],
"stopAtEntry": true,
"cwd": "${workspaceFolder}",
"miDebuggerServerAddress": "localhost:1234",
"miDebuggerPath": "/usr/bin/gdb-multiarch",
"environment": [],
"externalConsole": false,
"MIMode": "gdb",
"setupCommands": [
{
"description": "pretty printing",
"text": "-enable-pretty-printing",
"ignoreFailures": true
}
],
"logging": {
"engineLogging": true,
"programOutput": true,
},
}
]
}
6、新建终端
运行
./qemu-run -g
7、vscode debug
点击debug