搭建环境
使用 docker 准备 xv6 环境
wtakuo/xv6-env
使用 docker 方式，参见：https://github.com/wtakuo/xv6-env
cd {path-to-xv6-riscv}docker run -it --rm -v $(pwd):/home/xv6/xv6-riscv wtakuo/xv6-env
jjolly/xv6 (推荐)
cd {path-to-xv6-riscv}docker run --name=xv6 -h xv6 -ti -v $(pwd):/xv6-riscv jjolly/xv6
再次运行 docker：
docker run -it 900266e4df99 /bin/bash# ordocker run -it --rm -v $(pwd):/xv6-riscv jjolly/xv6
运行 xv6
cd /xv6-riscvmake qemu
详见：https://www.youtube.com/watch?v=juA01R9PzTI
Debug
基本使用
make CPUS=1 qemu-gdb
再打开一个 terminal
gdb-multiarch -q kernel/kernel
问题
- docker 环境下，gdb no Source Available
使用 vscode Remote Containers 来连接 docker 环境
前提条件
- 安装 Remote-Containers 插件。
在原镜像基础上又安装了一些软件，比如：vim, bear, clangd(Extension) 等。
保存成新的镜像：
docker commit {container_id} bermaker/xv6:latest
基本使用
生成
compile_commands.jsonbear make qemu
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.vscode/tasks.json
{"version": "2.0.0","tasks": [{"label": "xv6 build","type": "shell","isBackground": true,"command": "make qemu-gdb","problemMatcher": [{"pattern": [{"regexp": ".","file": 1,"location": 2,"message": 3}],"background": {"beginsPattern": ".*Now run 'gdb' in another window.","endsPattern": "."}}],"group": {"kind": "build","isDefault": true}}]}
.vscode/launch.json
{"version": "0.2.0","configurations": [{"name": "xv6 debug","type": "cppdbg","request": "launch","program": "${workspaceFolder}/kernel/kernel","stopAtEntry": true,"cwd": "${workspaceFolder}","miDebuggerServerAddress": "127.0.0.1:25000", //见.gdbinit 中 target remote xxxx:xx"miDebuggerPath": "/usr/bin/gdb-multiarch", // which gdb-multiarch"MIMode": "gdb","preLaunchTask": "xv6 build"}]}
.vscode/c_cpp_properties.json
{"configurations": [{"name": "Linux","includePath": ["${workspaceFolder}/**"],"defines": [],"compilerPath": "/usr/bin/gcc","cStandard": "gnu17","cppStandard": "gnu++14","intelliSenseMode": "linux-gcc-x64","compileCommands": "${workspaceFolder}/compile_commands.json"}],"version": 4}
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