diff --git a/.vimrc b/.vimrc
index 5950028..c07cd5a 100644
--- a/.vimrc
+++ b/.vimrc
@@ -11,7 +11,9 @@
 "   F8          view tag list
 " S-F8          build ctags/cscope databases
 " M-F8          build kernel ctags/cscope databases
-"   F9          view changes
+"   F9          build cscope in .vim/cscope
+" S-F9          Search cscopeDB in .vim/cscope
+" M-F9	        diff tool
 "   F10         folding 
 "   F11         unhighlight search
 "   F12         paste mode
@@ -215,6 +217,10 @@ else
     map <M-F8> :CtagsKernelBuild<CR><CR>
 endif
 
+if has("cscope")
+    map <S-F9> :call GetCscopeDb(expand("%:p:h")) <CR><CR>
+    map <F9> :call GenerateCscopeDb() <CR><CR>
+endif
 " close preview window after a completion
 if has("autocmd")
 	autocmd CursorMovedI *.{[hc],cpp} if pumvisible() == 0|pclose|endif
@@ -299,8 +305,8 @@ imap <M-S-F1> <Esc><M-S-F1>
 " show current changes with F9
 command! DiffOrig
 	\ vert new | set bt=nofile | r # | 0d_ | diffthis | wincmd p | diffthis
-map <F9> :DiffOrig<CR>
-imap <F9> <ESC><F9>a
+map <M-F9> :DiffOrig<CR>
+imap <M-F9> <ESC><M-F9>a
 " show git diff when committing
 let g:git_diff_spawn_mode = 1
 if has("autocmd")