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Editing: termdebug.vim
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" Debugger plugin using gdb. " " Author: Bram Moolenaar " Copyright: Vim license applies, see ":help license" " Last Change: 2021 Jan 03 " " WORK IN PROGRESS - Only the basics work " Note: On MS-Windows you need a recent version of gdb. The one included with " MingW is too old (7.6.1). " I used version 7.12 from http://www.equation.com/servlet/equation.cmd?fa=gdb " " There are two ways to run gdb: " - In a terminal window; used if possible, does not work on MS-Windows " Not used when g:termdebug_use_prompt is set to 1. " - Using a "prompt" buffer; may use a terminal window for the program " " For both the current window is used to view source code and shows the " current statement from gdb. " " USING A TERMINAL WINDOW " " Opens two visible terminal windows: " 1. runs a pty for the debugged program, as with ":term NONE" " 2. runs gdb, passing the pty of the debugged program " A third terminal window is hidden, it is used for communication with gdb. " " USING A PROMPT BUFFER " " Opens a window with a prompt buffer to communicate with gdb. " Gdb is run as a job with callbacks for I/O. " On Unix another terminal window is opened to run the debugged program " On MS-Windows a separate console is opened to run the debugged program " " The communication with gdb uses GDB/MI. See: " https://sourceware.org/gdb/current/onlinedocs/gdb/GDB_002fMI.html " In case this gets sourced twice. if exists(':Termdebug') finish endif " Need either the +terminal feature or +channel and the prompt buffer. " The terminal feature does not work with gdb on win32. if has('terminal') && !has('win32') let s:way = 'terminal' elseif has('channel') && exists('*prompt_setprompt') let s:way = 'prompt' else if has('terminal') let s:err = 'Cannot debug, missing prompt buffer support' else let s:err = 'Cannot debug, +channel feature is not supported' endif command -nargs=* -complete=file -bang Termdebug echoerr s:err command -nargs=+ -complete=file -bang TermdebugCommand echoerr s:err finish endif let s:keepcpo = &cpo set cpo&vim " The command that starts debugging, e.g. ":Termdebug vim". " To end type "quit" in the gdb window. command -nargs=* -complete=file -bang Termdebug call s:StartDebug(<bang>0, <f-args>) command -nargs=+ -complete=file -bang TermdebugCommand call s:StartDebugCommand(<bang>0, <f-args>) " Name of the gdb command, defaults to "gdb". if !exists('g:termdebugger') let g:termdebugger = 'gdb' endif let s:pc_id = 12 let s:asm_id = 13 let s:break_id = 14 " breakpoint number is added to this let s:stopped = 1 let s:parsing_disasm_msg = 0 let s:asm_lines = [] let s:asm_addr = '' " Take a breakpoint number as used by GDB and turn it into an integer. " The breakpoint may contain a dot: 123.4 -> 123004 " The main breakpoint has a zero subid. func s:Breakpoint2SignNumber(id, subid) return s:break_id + a:id * 1000 + a:subid endfunction func s:Highlight(init, old, new) let default = a:init ? 'default ' : '' if a:new ==# 'light' && a:old !=# 'light' exe "hi " . default . "debugPC term=reverse ctermbg=lightblue guibg=lightblue" elseif a:new ==# 'dark' && a:old !=# 'dark' exe "hi " . default . "debugPC term=reverse ctermbg=darkblue guibg=darkblue" endif endfunc call s:Highlight(1, '', &background) hi default debugBreakpoint term=reverse ctermbg=red guibg=red func s:StartDebug(bang, ...) " First argument is the command to debug, second core file or process ID. call s:StartDebug_internal({'gdb_args': a:000, 'bang': a:bang}) endfunc func s:StartDebugCommand(bang, ...) " First argument is the command to debug, rest are run arguments. call s:StartDebug_internal({'gdb_args': [a:1], 'proc_args': a:000[1:], 'bang': a:bang}) endfunc func s:StartDebug_internal(dict) if exists('s:gdbwin') echoerr 'Terminal debugger already running, cannot run two' return endif if !executable(g:termdebugger) echoerr 'Cannot execute debugger program "' .. g:termdebugger .. '"' return endif let s:ptywin = 0 let s:pid = 0 let s:asmwin = 0 " Uncomment this line to write logging in "debuglog". " call ch_logfile('debuglog', 'w') let s:sourcewin = win_getid(winnr()) " Remember the old value of 'signcolumn' for each buffer that it's set in, so " that we can restore the value for all buffers. let b:save_signcolumn = &signcolumn let s:signcolumn_buflist = [bufnr()] let s:save_columns = 0 let s:allleft = 0 if exists('g:termdebug_wide') if &columns < g:termdebug_wide let s:save_columns = &columns let &columns = g:termdebug_wide " If we make the Vim window wider, use the whole left halve for the debug " windows. let s:allleft = 1 endif let s:vertical = 1 else let s:vertical = 0 endif " Override using a terminal window by setting g:termdebug_use_prompt to 1. let use_prompt = exists('g:termdebug_use_prompt') && g:termdebug_use_prompt if has('terminal') && !has('win32') && !use_prompt let s:way = 'terminal' else let s:way = 'prompt' endif if s:way == 'prompt' call s:StartDebug_prompt(a:dict) else call s:StartDebug_term(a:dict) endif if exists('g:termdebug_disasm_window') if g:termdebug_disasm_window let curwinid = win_getid(winnr()) call s:GotoAsmwinOrCreateIt() call win_gotoid(curwinid) endif endif endfunc " Use when debugger didn't start or ended. func s:CloseBuffers() exe 'bwipe! ' . s:ptybuf exe 'bwipe! ' . s:commbuf unlet! s:gdbwin endfunc func s:StartDebug_term(dict) " Open a terminal window without a job, to run the debugged program in. let s:ptybuf = term_start('NONE', { \ 'term_name': 'debugged program', \ 'vertical': s:vertical, \ }) if s:ptybuf == 0 echoerr 'Failed to open the program terminal window' return endif let pty = job_info(term_getjob(s:ptybuf))['tty_out'] let s:ptywin = win_getid(winnr()) if s:vertical " Assuming the source code window will get a signcolumn, use two more " columns for that, thus one less for the terminal window. exe (&columns / 2 - 1) . "wincmd |" if s:allleft " use the whole left column wincmd H endif endif " Create a hidden terminal window to communicate with gdb let s:commbuf = term_start('NONE', { \ 'term_name': 'gdb communication', \ 'out_cb': function('s:CommOutput'), \ 'hidden': 1, \ }) if s:commbuf == 0 echoerr 'Failed to open the communication terminal window' exe 'bwipe! ' . s:ptybuf return endif let commpty = job_info(term_getjob(s:commbuf))['tty_out'] " Open a terminal window to run the debugger. " Add -quiet to avoid the intro message causing a hit-enter prompt. let gdb_args = get(a:dict, 'gdb_args', []) let proc_args = get(a:dict, 'proc_args', []) let cmd = [g:termdebugger, '-quiet', '-tty', pty] + gdb_args call ch_log('executing "' . join(cmd) . '"') let s:gdbbuf = term_start(cmd, { \ 'term_finish': 'close', \ }) if s:gdbbuf == 0 echoerr 'Failed to open the gdb terminal window' call s:CloseBuffers() return endif let s:gdbwin = win_getid(winnr()) " Set arguments to be run if len(proc_args) call term_sendkeys(s:gdbbuf, 'set args ' . join(proc_args) . "\r") endif " Connect gdb to the communication pty, using the GDB/MI interface call term_sendkeys(s:gdbbuf, 'new-ui mi ' . commpty . "\r") " Wait for the response to show up, users may not notice the error and wonder " why the debugger doesn't work. let try_count = 0 while 1 let gdbproc = term_getjob(s:gdbbuf) if gdbproc == v:null || job_status(gdbproc) !=# 'run' echoerr string(g:termdebugger) . ' exited unexpectedly' call s:CloseBuffers() return endif let response = '' for lnum in range(1, 200) let line1 = term_getline(s:gdbbuf, lnum) let line2 = term_getline(s:gdbbuf, lnum + 1) if line1 =~ 'new-ui mi ' " response can be in the same line or the next line let response = line1 . line2 if response =~ 'Undefined command' echoerr 'Sorry, your gdb is too old, gdb 7.12 is required' call s:CloseBuffers() return endif if response =~ 'New UI allocated' " Success! break endif elseif line1 =~ 'Reading symbols from' && line2 !~ 'new-ui mi ' " Reading symbols might take a while, try more times let try_count -= 1 endif endfor if response =~ 'New UI allocated' break endif let try_count += 1 if try_count > 100 echoerr 'Cannot check if your gdb works, continuing anyway' break endif sleep 10m endwhile " Interpret commands while the target is running. This should usually only be " exec-interrupt, since many commands don't work properly while the target is " running. call s:SendCommand('-gdb-set mi-async on') " Older gdb uses a different command. call s:SendCommand('-gdb-set target-async on') " Disable pagination, it causes everything to stop at the gdb " "Type <return> to continue" prompt. call s:SendCommand('set pagination off') call job_setoptions(gdbproc, {'exit_cb': function('s:EndTermDebug')}) call s:StartDebugCommon(a:dict) endfunc func s:StartDebug_prompt(dict) " Open a window with a prompt buffer to run gdb in. if s:vertical vertical new else new endif let s:gdbwin = win_getid(winnr()) let s:promptbuf = bufnr('') call prompt_setprompt(s:promptbuf, 'gdb> ') set buftype=prompt file gdb call prompt_setcallback(s:promptbuf, function('s:PromptCallback')) call prompt_setinterrupt(s:promptbuf, function('s:PromptInterrupt')) if s:vertical " Assuming the source code window will get a signcolumn, use two more " columns for that, thus one less for the terminal window. exe (&columns / 2 - 1) . "wincmd |" endif " Add -quiet to avoid the intro message causing a hit-enter prompt. let gdb_args = get(a:dict, 'gdb_args', []) let proc_args = get(a:dict, 'proc_args', []) let cmd = [g:termdebugger, '-quiet', '--interpreter=mi2'] + gdb_args call ch_log('executing "' . join(cmd) . '"') let s:gdbjob = job_start(cmd, { \ 'exit_cb': function('s:EndPromptDebug'), \ 'out_cb': function('s:GdbOutCallback'), \ }) if job_status(s:gdbjob) != "run" echoerr 'Failed to start gdb' exe 'bwipe! ' . s:promptbuf return endif " Mark the buffer modified so that it's not easy to close. set modified let s:gdb_channel = job_getchannel(s:gdbjob) " Interpret commands while the target is running. This should usually only " be exec-interrupt, since many commands don't work properly while the " target is running. call s:SendCommand('-gdb-set mi-async on') " Older gdb uses a different command. call s:SendCommand('-gdb-set target-async on') let s:ptybuf = 0 if has('win32') " MS-Windows: run in a new console window for maximum compatibility call s:SendCommand('set new-console on') elseif has('terminal') " Unix: Run the debugged program in a terminal window. Open it below the " gdb window. belowright let s:ptybuf = term_start('NONE', { \ 'term_name': 'debugged program', \ }) if s:ptybuf == 0 echoerr 'Failed to open the program terminal window' call job_stop(s:gdbjob) return endif let s:ptywin = win_getid(winnr()) let pty = job_info(term_getjob(s:ptybuf))['tty_out'] call s:SendCommand('tty ' . pty) " Since GDB runs in a prompt window, the environment has not been set to " match a terminal window, need to do that now. call s:SendCommand('set env TERM = xterm-color') call s:SendCommand('set env ROWS = ' . winheight(s:ptywin)) call s:SendCommand('set env LINES = ' . winheight(s:ptywin)) call s:SendCommand('set env COLUMNS = ' . winwidth(s:ptywin)) call s:SendCommand('set env COLORS = ' . &t_Co) call s:SendCommand('set env VIM_TERMINAL = ' . v:version) else " TODO: open a new terminal get get the tty name, pass on to gdb call s:SendCommand('show inferior-tty') endif call s:SendCommand('set print pretty on') call s:SendCommand('set breakpoint pending on') " Disable pagination, it causes everything to stop at the gdb call s:SendCommand('set pagination off') " Set arguments to be run if len(proc_args) call s:SendCommand('set args ' . join(proc_args)) endif call s:StartDebugCommon(a:dict) startinsert endfunc func s:StartDebugCommon(dict) " Sign used to highlight the line where the program has stopped. " There can be only one. sign define debugPC linehl=debugPC " Install debugger commands in the text window. call win_gotoid(s:sourcewin) call s:InstallCommands() call win_gotoid(s:gdbwin) " Enable showing a balloon with eval info if has("balloon_eval") || has("balloon_eval_term") set balloonexpr=TermDebugBalloonExpr() if has("balloon_eval") set ballooneval endif if has("balloon_eval_term") set balloonevalterm endif endif " Contains breakpoints that have been placed, key is a string with the GDB " breakpoint number. " Each entry is a dict, containing the sub-breakpoints. Key is the subid. " For a breakpoint that is just a number the subid is zero. " For a breakpoint "123.4" the id is "123" and subid is "4". " Example, when breakpoint "44", "123", "123.1" and "123.2" exist: " {'44': {'0': entry}, '123': {'0': entry, '1': entry, '2': entry}} let s:breakpoints = {} " Contains breakpoints by file/lnum. The key is "fname:lnum". " Each entry is a list of breakpoint IDs at that position. let s:breakpoint_locations = {} augroup TermDebug au BufRead * call s:BufRead() au BufUnload * call s:BufUnloaded() au OptionSet background call s:Highlight(0, v:option_old, v:option_new) augroup END " Run the command if the bang attribute was given and got to the debug " window. if get(a:dict, 'bang', 0) call s:SendCommand('-exec-run') call win_gotoid(s:ptywin) endif endfunc " Send a command to gdb. "cmd" is the string without line terminator. func s:SendCommand(cmd) call ch_log('sending to gdb: ' . a:cmd) if s:way == 'prompt' call ch_sendraw(s:gdb_channel, a:cmd . "\n") else call term_sendkeys(s:commbuf, a:cmd . "\r") endif endfunc " This is global so that a user can create their mappings with this. func TermDebugSendCommand(cmd) if s:way == 'prompt' call ch_sendraw(s:gdb_channel, a:cmd . "\n") else let do_continue = 0 if !s:stopped let do_continue = 1 call s:SendCommand('-exec-interrupt') sleep 10m endif call term_sendkeys(s:gdbbuf, a:cmd . "\r") if do_continue Continue endif endif endfunc " Function called when entering a line in the prompt buffer. func s:PromptCallback(text) call s:SendCommand(a:text) endfunc " Function called when pressing CTRL-C in the prompt buffer and when placing a " breakpoint. func s:PromptInterrupt() call ch_log('Interrupting gdb') if has('win32') " Using job_stop() does not work on MS-Windows, need to send SIGTRAP to " the debugger program so that gdb responds again. if s:pid == 0 echoerr 'Cannot interrupt gdb, did not find a process ID' else call debugbreak(s:pid) endif else call job_stop(s:gdbjob, 'int') endif endfunc " Function called when gdb outputs text. func s:GdbOutCallback(channel, text) call ch_log('received from gdb: ' . a:text) " Drop the gdb prompt, we have our own. " Drop status and echo'd commands. if a:text == '(gdb) ' || a:text == '^done' || a:text[0] == '&' return endif if a:text =~ '^^error,msg=' let text = s:DecodeMessage(a:text[11:]) if exists('s:evalexpr') && text =~ 'A syntax error in expression, near\|No symbol .* in current context' " Silently drop evaluation errors. unlet s:evalexpr return endif elseif a:text[0] == '~' let text = s:DecodeMessage(a:text[1:]) else call s:CommOutput(a:channel, a:text) return endif let curwinid = win_getid(winnr()) call win_gotoid(s:gdbwin) " Add the output above the current prompt. call append(line('$') - 1, text) set modified call win_gotoid(curwinid) endfunc " Decode a message from gdb. quotedText starts with a ", return the text up " to the next ", unescaping characters. func s:DecodeMessage(quotedText) if a:quotedText[0] != '"' echoerr 'DecodeMessage(): missing quote in ' . a:quotedText return endif let result = '' let i = 1 while a:quotedText[i] != '"' && i < len(a:quotedText) if a:quotedText[i] == '\' let i += 1 if a:quotedText[i] == 'n' " drop \n let i += 1 continue elseif a:quotedText[i] == 't' " append \t let i += 1 let result .= "\t" continue endif endif let result .= a:quotedText[i] let i += 1 endwhile return result endfunc " Extract the "name" value from a gdb message with fullname="name". func s:GetFullname(msg) if a:msg !~ 'fullname' return '' endif let name = s:DecodeMessage(substitute(a:msg, '.*fullname=', '', '')) if has('win32') && name =~ ':\\\\' " sometimes the name arrives double-escaped let name = substitute(name, '\\\\', '\\', 'g') endif return name endfunc " Extract the "addr" value from a gdb message with addr="0x0001234". func s:GetAsmAddr(msg) if a:msg !~ 'addr=' return '' endif let addr = s:DecodeMessage(substitute(a:msg, '.*addr=', '', '')) return addr endfunc func s:EndTermDebug(job, status) exe 'bwipe! ' . s:commbuf unlet s:gdbwin call s:EndDebugCommon() endfunc func s:EndDebugCommon() let curwinid = win_getid(winnr()) if exists('s:ptybuf') && s:ptybuf exe 'bwipe! ' . s:ptybuf endif " Restore 'signcolumn' in all buffers for which it was set. call win_gotoid(s:sourcewin) let was_buf = bufnr() for bufnr in s:signcolumn_buflist if bufexists(bufnr) exe bufnr .. "buf" if exists('b:save_signcolumn') let &signcolumn = b:save_signcolumn unlet b:save_signcolumn endif endif endfor exe was_buf .. "buf" call s:DeleteCommands() call win_gotoid(curwinid) if s:save_columns > 0 let &columns = s:save_columns endif if has("balloon_eval") || has("balloon_eval_term") set balloonexpr= if has("balloon_eval") set noballooneval endif if has("balloon_eval_term") set noballoonevalterm endif endif au! TermDebug endfunc func s:EndPromptDebug(job, status) let curwinid = win_getid(winnr()) call win_gotoid(s:gdbwin) set nomodified close if curwinid != s:gdbwin call win_gotoid(curwinid) endif call s:EndDebugCommon() unlet s:gdbwin call ch_log("Returning from EndPromptDebug()") endfunc " Disassembly window - added by Michael Sartain " " - CommOutput: disassemble $pc " - CommOutput: &"disassemble $pc\n" " - CommOutput: ~"Dump of assembler code for function main(int, char**):\n" " - CommOutput: ~" 0x0000555556466f69 <+0>:\tpush rbp\n" " ... " - CommOutput: ~" 0x0000555556467cd0:\tpop rbp\n" " - CommOutput: ~" 0x0000555556467cd1:\tret \n" " - CommOutput: ~"End of assembler dump.\n" " - CommOutput: ^done " - CommOutput: disassemble $pc " - CommOutput: &"disassemble $pc\n" " - CommOutput: &"No function contains specified address.\n" " - CommOutput: ^error,msg="No function contains specified address." func s:HandleDisasmMsg(msg) if a:msg =~ '^\^done' let curwinid = win_getid(winnr()) if win_gotoid(s:asmwin) silent normal! gg0"_dG call setline(1, s:asm_lines) set nomodified set filetype=asm let lnum = search('^' . s:asm_addr) if lnum != 0 exe 'sign unplace ' . s:asm_id exe 'sign place ' . s:asm_id . ' line=' . lnum . ' name=debugPC' endif call win_gotoid(curwinid) endif let s:parsing_disasm_msg = 0 let s:asm_lines = [] elseif a:msg =~ '^\^error,msg=' if s:parsing_disasm_msg == 1 " Disassemble call ran into an error. This can happen when gdb can't " find the function frame address, so let's try to disassemble starting " at current PC call s:SendCommand('disassemble $pc,+100') endif let s:parsing_disasm_msg = 0 elseif a:msg =~ '\&\"disassemble \$pc' if a:msg =~ '+100' " This is our second disasm attempt let s:parsing_disasm_msg = 2 endif else let value = substitute(a:msg, '^\~\"[ ]*', '', '') let value = substitute(value, '^=>[ ]*', '', '') let value = substitute(value, '\\n\" $', '', '') let value = substitute(value, '\\n\"$', '', '') let value = substitute(value, ' ', '', '') let value = substitute(value, '\\t', ' ', 'g') if value != '' || !empty(s:asm_lines) call add(s:asm_lines, value) endif endif endfunc " Handle a message received from gdb on the GDB/MI interface. func s:CommOutput(chan, msg) let msgs = split(a:msg, "\r") for msg in msgs " remove prefixed NL if msg[0] == "\n" let msg = msg[1:] endif if s:parsing_disasm_msg call s:HandleDisasmMsg(msg) elseif msg != '' if msg =~ '^\(\*stopped\|\*running\|=thread-selected\)' call s:HandleCursor(msg) elseif msg =~ '^\^done,bkpt=' || msg =~ '^=breakpoint-created,' call s:HandleNewBreakpoint(msg) elseif msg =~ '^=breakpoint-deleted,' call s:HandleBreakpointDelete(msg) elseif msg =~ '^=thread-group-started' call s:HandleProgramRun(msg) elseif msg =~ '^\^done,value=' call s:HandleEvaluate(msg) elseif msg =~ '^\^error,msg=' call s:HandleError(msg) elseif msg =~ '^disassemble' let s:parsing_disasm_msg = 1 let s:asm_lines = [] endif endif endfor endfunc func s:GotoProgram() if has('win32') if executable('powershell') call system(printf('powershell -Command "add-type -AssemblyName microsoft.VisualBasic;[Microsoft.VisualBasic.Interaction]::AppActivate(%d);"', s:pid)) endif else call win_gotoid(s:ptywin) endif endfunc " Install commands in the current window to control the debugger. func s:InstallCommands() let save_cpo = &cpo set cpo&vim command -nargs=? Break call s:SetBreakpoint(<q-args>) command Clear call s:ClearBreakpoint() command Step call s:SendCommand('-exec-step') command Over call s:SendCommand('-exec-next') command Finish call s:SendCommand('-exec-finish') command -nargs=* Run call s:Run(<q-args>) command -nargs=* Arguments call s:SendCommand('-exec-arguments ' . <q-args>) command Stop call s:SendCommand('-exec-interrupt') " using -exec-continue results in CTRL-C in gdb window not working if s:way == 'prompt' command Continue call s:SendCommand('continue') else command Continue call term_sendkeys(s:gdbbuf, "continue\r") endif command -range -nargs=* Evaluate call s:Evaluate(<range>, <q-args>) command Gdb call win_gotoid(s:gdbwin) command Program call s:GotoProgram() command Source call s:GotoSourcewinOrCreateIt() command Asm call s:GotoAsmwinOrCreateIt() command Winbar call s:InstallWinbar() if !exists('g:termdebug_map_K') || g:termdebug_map_K let s:k_map_saved = maparg('K', 'n', 0, 1) nnoremap K :Evaluate<CR> endif if has('menu') && &mouse != '' call s:InstallWinbar() if !exists('g:termdebug_popup') || g:termdebug_popup != 0 let s:saved_mousemodel = &mousemodel let &mousemodel = 'popup_setpos' an 1.200 PopUp.-SEP3- <Nop> an 1.210 PopUp.Set\ breakpoint :Break<CR> an 1.220 PopUp.Clear\ breakpoint :Clear<CR> an 1.230 PopUp.Evaluate :Evaluate<CR> endif endif let &cpo = save_cpo endfunc let s:winbar_winids = [] " Install the window toolbar in the current window. func s:InstallWinbar() if has('menu') && &mouse != '' nnoremenu WinBar.Step :Step<CR> nnoremenu WinBar.Next :Over<CR> nnoremenu WinBar.Finish :Finish<CR> nnoremenu WinBar.Cont :Continue<CR> nnoremenu WinBar.Stop :Stop<CR> nnoremenu WinBar.Eval :Evaluate<CR> call add(s:winbar_winids, win_getid(winnr())) endif endfunc " Delete installed debugger commands in the current window. func s:DeleteCommands() delcommand Break delcommand Clear delcommand Step delcommand Over delcommand Finish delcommand Run delcommand Arguments delcommand Stop delcommand Continue delcommand Evaluate delcommand Gdb delcommand Program delcommand Source delcommand Asm delcommand Winbar if exists('s:k_map_saved') if empty(s:k_map_saved) nunmap K else call mapset('n', 0, s:k_map_saved) endif unlet s:k_map_saved endif if has('menu') " Remove the WinBar entries from all windows where it was added. let curwinid = win_getid(winnr()) for winid in s:winbar_winids if win_gotoid(winid) aunmenu WinBar.Step aunmenu WinBar.Next aunmenu WinBar.Finish aunmenu WinBar.Cont aunmenu WinBar.Stop aunmenu WinBar.Eval endif endfor call win_gotoid(curwinid) let s:winbar_winids = [] if exists('s:saved_mousemodel') let &mousemodel = s:saved_mousemodel unlet s:saved_mousemodel aunmenu PopUp.-SEP3- aunmenu PopUp.Set\ breakpoint aunmenu PopUp.Clear\ breakpoint aunmenu PopUp.Evaluate endif endif exe 'sign unplace ' . s:pc_id for [id, entries] in items(s:breakpoints) for subid in keys(entries) exe 'sign unplace ' . s:Breakpoint2SignNumber(id, subid) endfor endfor unlet s:breakpoints unlet s:breakpoint_locations sign undefine debugPC for val in s:BreakpointSigns exe "sign undefine debugBreakpoint" . val endfor let s:BreakpointSigns = [] endfunc " :Break - Set a breakpoint at the cursor position. func s:SetBreakpoint(at) " Setting a breakpoint may not work while the program is running. " Interrupt to make it work. let do_continue = 0 if !s:stopped let do_continue = 1 if s:way == 'prompt' call s:PromptInterrupt() else call s:SendCommand('-exec-interrupt') endif sleep 10m endif " Use the fname:lnum format, older gdb can't handle --source. let at = empty(a:at) ? \ fnameescape(expand('%:p')) . ':' . line('.') : a:at call s:SendCommand('-break-insert ' . at) if do_continue call s:SendCommand('-exec-continue') endif endfunc " :Clear - Delete a breakpoint at the cursor position. func s:ClearBreakpoint() let fname = fnameescape(expand('%:p')) let lnum = line('.') let bploc = printf('%s:%d', fname, lnum) if has_key(s:breakpoint_locations, bploc) let idx = 0 for id in s:breakpoint_locations[bploc] if has_key(s:breakpoints, id) " Assume this always works, the reply is simply "^done". call s:SendCommand('-break-delete ' . id) for subid in keys(s:breakpoints[id]) exe 'sign unplace ' . s:Breakpoint2SignNumber(id, subid) endfor unlet s:breakpoints[id] unlet s:breakpoint_locations[bploc][idx] break else let idx += 1 endif endfor if empty(s:breakpoint_locations[bploc]) unlet s:breakpoint_locations[bploc] endif endif endfunc func s:Run(args) if a:args != '' call s:SendCommand('-exec-arguments ' . a:args) endif call s:SendCommand('-exec-run') endfunc func s:SendEval(expr) call s:SendCommand('-data-evaluate-expression "' . a:expr . '"') let s:evalexpr = a:expr endfunc " :Evaluate - evaluate what is under the cursor func s:Evaluate(range, arg) if a:arg != '' let expr = a:arg elseif a:range == 2 let pos = getcurpos() let reg = getreg('v', 1, 1) let regt = getregtype('v') normal! gv"vy let expr = @v call setpos('.', pos) call setreg('v', reg, regt) else let expr = expand('<cexpr>') endif let s:ignoreEvalError = 0 call s:SendEval(expr) endfunc let s:ignoreEvalError = 0 let s:evalFromBalloonExpr = 0 " Handle the result of data-evaluate-expression func s:HandleEvaluate(msg) let value = substitute(a:msg, '.*value="\(.*\)"', '\1', '') let value = substitute(value, '\\"', '"', 'g') if s:evalFromBalloonExpr if s:evalFromBalloonExprResult == '' let s:evalFromBalloonExprResult = s:evalexpr . ': ' . value else let s:evalFromBalloonExprResult .= ' = ' . value endif call balloon_show(s:evalFromBalloonExprResult) else echomsg '"' . s:evalexpr . '": ' . value endif if s:evalexpr[0] != '*' && value =~ '^0x' && value != '0x0' && value !~ '"$' " Looks like a pointer, also display what it points to. let s:ignoreEvalError = 1 call s:SendEval('*' . s:evalexpr) else let s:evalFromBalloonExpr = 0 endif endfunc " Show a balloon with information of the variable under the mouse pointer, " if there is any. func TermDebugBalloonExpr() if v:beval_winid != s:sourcewin return '' endif if !s:stopped " Only evaluate when stopped, otherwise setting a breakpoint using the " mouse triggers a balloon. return '' endif let s:evalFromBalloonExpr = 1 let s:evalFromBalloonExprResult = '' let s:ignoreEvalError = 1 call s:SendEval(v:beval_text) return '' endfunc " Handle an error. func s:HandleError(msg) if s:ignoreEvalError " Result of s:SendEval() failed, ignore. let s:ignoreEvalError = 0 let s:evalFromBalloonExpr = 0 return endif echoerr substitute(a:msg, '.*msg="\(.*\)"', '\1', '') endfunc func s:GotoSourcewinOrCreateIt() if !win_gotoid(s:sourcewin) new let s:sourcewin = win_getid(winnr()) call s:InstallWinbar() endif endfunc func s:GotoAsmwinOrCreateIt() if !win_gotoid(s:asmwin) if win_gotoid(s:sourcewin) exe 'rightbelow new' else exe 'new' endif let s:asmwin = win_getid(winnr()) setlocal nowrap setlocal number setlocal noswapfile setlocal buftype=nofile let asmbuf = bufnr('Termdebug-asm-listing') if asmbuf > 0 exe 'buffer' . asmbuf else exe 'file Termdebug-asm-listing' endif if exists('g:termdebug_disasm_window') if g:termdebug_disasm_window > 1 exe 'resize ' . g:termdebug_disasm_window endif endif endif if s:asm_addr != '' let lnum = search('^' . s:asm_addr) if lnum == 0 if s:stopped call s:SendCommand('disassemble $pc') endif else exe 'sign unplace ' . s:asm_id exe 'sign place ' . s:asm_id . ' line=' . lnum . ' name=debugPC' endif endif endfunc " Handle stopping and running message from gdb. " Will update the sign that shows the current position. func s:HandleCursor(msg) let wid = win_getid(winnr()) if a:msg =~ '^\*stopped' call ch_log('program stopped') let s:stopped = 1 elseif a:msg =~ '^\*running' call ch_log('program running') let s:stopped = 0 endif if a:msg =~ 'fullname=' let fname = s:GetFullname(a:msg) else let fname = '' endif if a:msg =~ 'addr=' let asm_addr = s:GetAsmAddr(a:msg) if asm_addr != '' let s:asm_addr = asm_addr let curwinid = win_getid(winnr()) if win_gotoid(s:asmwin) let lnum = search('^' . s:asm_addr) if lnum == 0 call s:SendCommand('disassemble $pc') else exe 'sign unplace ' . s:asm_id exe 'sign place ' . s:asm_id . ' line=' . lnum . ' name=debugPC' endif call win_gotoid(curwinid) endif endif endif if a:msg =~ '^\(\*stopped\|=thread-selected\)' && filereadable(fname) let lnum = substitute(a:msg, '.*line="\([^"]*\)".*', '\1', '') if lnum =~ '^[0-9]*$' call s:GotoSourcewinOrCreateIt() if expand('%:p') != fnamemodify(fname, ':p') if &modified " TODO: find existing window exe 'split ' . fnameescape(fname) let s:sourcewin = win_getid(winnr()) call s:InstallWinbar() else exe 'edit ' . fnameescape(fname) endif endif exe lnum exe 'sign unplace ' . s:pc_id exe 'sign place ' . s:pc_id . ' line=' . lnum . ' name=debugPC priority=110 file=' . fname if !exists('b:save_signcolumn') let b:save_signcolumn = &signcolumn call add(s:signcolumn_buflist, bufnr()) endif setlocal signcolumn=yes endif elseif !s:stopped || fname != '' exe 'sign unplace ' . s:pc_id endif call win_gotoid(wid) endfunc let s:BreakpointSigns = [] func s:CreateBreakpoint(id, subid) let nr = printf('%d.%d', a:id, a:subid) if index(s:BreakpointSigns, nr) == -1 call add(s:BreakpointSigns, nr) exe "sign define debugBreakpoint" . nr . " text=" . substitute(nr, '\..*', '', '') . " texthl=debugBreakpoint" endif endfunc func! s:SplitMsg(s) return split(a:s, '{.\{-}}\zs') endfunction " Handle setting a breakpoint " Will update the sign that shows the breakpoint func s:HandleNewBreakpoint(msg) if a:msg !~ 'fullname=' " a watch does not have a file name return endif for msg in s:SplitMsg(a:msg) let fname = s:GetFullname(msg) if empty(fname) continue endif let nr = substitute(msg, '.*number="\([0-9.]*\)\".*', '\1', '') if empty(nr) return endif " If "nr" is 123 it becomes "123.0" and subid is "0". " If "nr" is 123.4 it becomes "123.4.0" and subid is "4"; "0" is discarded. let [id, subid; _] = map(split(nr . '.0', '\.'), 'v:val + 0') call s:CreateBreakpoint(id, subid) if has_key(s:breakpoints, id) let entries = s:breakpoints[id] else let entries = {} let s:breakpoints[id] = entries endif if has_key(entries, subid) let entry = entries[subid] else let entry = {} let entries[subid] = entry endif let lnum = substitute(msg, '.*line="\([^"]*\)".*', '\1', '') let entry['fname'] = fname let entry['lnum'] = lnum let bploc = printf('%s:%d', fname, lnum) if !has_key(s:breakpoint_locations, bploc) let s:breakpoint_locations[bploc] = [] endif let s:breakpoint_locations[bploc] += [id] if bufloaded(fname) call s:PlaceSign(id, subid, entry) endif endfor endfunc func s:PlaceSign(id, subid, entry) let nr = printf('%d.%d', a:id, a:subid) exe 'sign place ' . s:Breakpoint2SignNumber(a:id, a:subid) . ' line=' . a:entry['lnum'] . ' name=debugBreakpoint' . nr . ' priority=110 file=' . a:entry['fname'] let a:entry['placed'] = 1 endfunc " Handle deleting a breakpoint " Will remove the sign that shows the breakpoint func s:HandleBreakpointDelete(msg) let id = substitute(a:msg, '.*id="\([0-9]*\)\".*', '\1', '') + 0 if empty(id) return endif if has_key(s:breakpoints, id) for [subid, entry] in items(s:breakpoints[id]) if has_key(entry, 'placed') exe 'sign unplace ' . s:Breakpoint2SignNumber(id, subid) unlet entry['placed'] endif endfor unlet s:breakpoints[id] endif endfunc " Handle the debugged program starting to run. " Will store the process ID in s:pid func s:HandleProgramRun(msg) let nr = substitute(a:msg, '.*pid="\([0-9]*\)\".*', '\1', '') + 0 if nr == 0 return endif let s:pid = nr call ch_log('Detected process ID: ' . s:pid) endfunc " Handle a BufRead autocommand event: place any signs. func s:BufRead() let fname = expand('<afile>:p') for [id, entries] in items(s:breakpoints) for [subid, entry] in items(entries) if entry['fname'] == fname call s:PlaceSign(id, subid, entry) endif endfor endfor endfunc " Handle a BufUnloaded autocommand event: unplace any signs. func s:BufUnloaded() let fname = expand('<afile>:p') for [id, entries] in items(s:breakpoints) for [subid, entry] in items(entries) if entry['fname'] == fname let entry['placed'] = 0 endif endfor endfor endfunc let &cpo = s:keepcpo unlet s:keepcpo
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