Linux-0.11

quick start

git clone https://github.com/xiaocairush/linux-0.11.git

代码阅读

第一步：安装工具

为方便阅读代码，请安装vim, ctag, cscope, taglist。不同平台安装命令不同，暂略。

第二步：生成tags和cscope文件

cd linux-0.11
ctags -R
cscope -Rbkq

第三步：~/.vimrc中添加如下内容

set tags=tags;
set autochdir
if filereadable("cscope.out") 
    cs add cscope.out 
endif

if has("cscope")
            set cscopetag   " 使支持用 Ctrl+]  和 Ctrl+t 快捷键在代码间跳来跳去
            " check cscope for definition of a symbol before checking ctags:
            " set to 1 if you want the reverse search order.
             set csto=1

             " add any cscope database in current directory
             if filereadable("cscope.out")
                 cs add cscope.out
             " else add the database pointed to by environment variable
             elseif $CSCOPE_DB !=""
                 cs add $CSCOPE_DB
             endif

             " show msg when any other cscope db added
             set cscopeverbose

             nmap <C-/>s :cs find s <C-R>=expand("<cword>")<CR><CR>
             nmap <C-/>g :cs find g <C-R>=expand("<cword>")<CR><CR>
             nmap <C-/>c :cs find c <C-R>=expand("<cword>")<CR><CR>
             nmap <C-/>t :cs find t <C-R>=expand("<cword>")<CR><CR>
             nmap <C-/>e :cs find e <C-R>=expand("<cword>")<CR><CR>
             nmap <C-/>f :cs find f <C-R>=expand("<cfile>")<CR><CR>
             nmap <C-/>i :cs find i ^<C-R>=expand("<cfile>")<CR>$<CR>
             nmap <C-/>d :cs find d <C-R>=expand("<cword>")<CR><CR>
         endif

" 按F8按钮，在窗口的左侧出现taglist的窗口,像vc的左侧的workpace
nnoremap <silent> <F8> :TlistToggle<CR><CR>
" :Tlist              调用TagList
let Tlist_Show_One_File=0                    " 只显示当前文件的tags
let Tlist_Exit_OnlyWindow=1                  " 如果Taglist窗口是最后一个窗口则退出Vim
let Tlist_Use_Right_Window=1                 " 在右侧窗口中显示
let Tlist_File_Fold_Auto_Close=1             " 自动折叠

第四步：enjoy reading

vim ./init/main.c

参考书籍：Linux-0.11源码完全注释