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;;; gdb-mi.el ;; Author: Nick Roberts <nickrob@gnu.org> ;; Maintainer: Nick Roberts <nickrob@gnu.org> ;; Keywords: unix, tools ;; Copyright (C) 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. ;; This file is part of GNU GDB. ;; GNU GDB is free software; you can redistribute it and/or modify ;; it under the terms of the GNU General Public License as published by ;; the Free Software Foundation; either version 2, or (at your option) ;; any later version. ;; This program is distributed in the hope that it will be useful, ;; but WITHOUT ANY WARRANTY; without even the implied warranty of ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ;; GNU General Public License for more details. ;;; Commentary: ;; This mode acts as a graphical user interface to GDB and works with Emacs ;; 22.x and the version of GDB with which it is distributed. You can interact ;; with GDB through the GUD buffer in the usual way, but there are also ;; buffers which control the execution and describe the state of your program. ;; It separates the input/output of your program from that of GDB and displays ;; expressions and their current values in their own buffers. It also uses ;; features of Emacs 21 such as the fringe/display margin for breakpoints, and ;; the toolbar (see the GDB Graphical Interface section in the Emacs info ;; manual). ;; Start the debugger with M-x gdbmi. ;; This file uses GDB/MI as the primary interface to GDB. It is still under ;; development and is part of a process to migrate Emacs from annotations (as ;; used in gdb-ui.el) to GDB/MI. It runs gdb with GDB/MI (-interp=mi) and ;; access CLI using "-interpreter-exec console cli-command". ;; This mode acts on top of gdb-ui.el. After the release of 22.1, ;; mainline Emacs in the CVS repository will have a file also called gdb-mi.el ;; which will *replace* gdb-ui.el. If you are interested in developing ;; this mode you should get this version. ;; ;; Known Bugs: ;; ;; 1) To handle program input, if required, and to avoid extra output in the ;; GUD buffer you must not use run, step, next or continue etc but their MI ;; counterparts through gud-run, gud-step etc, e.g clicking on the appropriate ;; icon in the toolbar. ;; 2) Some commands send extra prompts to the GUD buffer. ;; 3) Doesn't list catchpoints in breakpoints buffer. ;; ;; TODO: ;; 1) Prefix MI commands with a token instead of queueing commands. ;; 2) Use MI command -data-read-memory for memory window. ;; 3) Use MI command -data-disassemble for disassembly window. ;; 4) Allow separate buffers for Inferior IO and GDB IO. ;; 5) Watch windows to work with threads. ;; ;;; Code: (require 'gud) (require 'gdb-ui) (defvar gdb-last-command nil) (defvar gdb-prompt-name nil) ;;;###autoload (defun gdbmi (command-line) "Run gdb on program FILE in buffer *gud-FILE*. The directory containing FILE becomes the initial working directory and source-file directory for your debugger. If `gdb-many-windows' is nil (the default value) then gdb just pops up the GUD buffer unless `gdb-show-main' is t. In this case it starts with two windows: one displaying the GUD buffer and the other with the source file with the main routine of the inferior. If `gdb-many-windows' is t, regardless of the value of `gdb-show-main', the layout below will appear. Keybindings are given in relevant buffer. Watch expressions appear in the speedbar/slowbar. The following commands help control operation : `gdb-many-windows' - Toggle the number of windows gdb uses. `gdb-restore-windows' - To restore the window layout. See Info node `(emacs)GDB Graphical Interface' for a more detailed description of this mode. +--------------------------------------------------------------+ | GDB Toolbar | +-------------------------------+------------------------------+ | GUD buffer (I/O of GDB) | Locals buffer | | | | | | | | | | +-------------------------------+------------------------------+ | Source buffer | | | | | | | | | | | | | | | +-------------------------------+------------------------------+ | Stack buffer | Breakpoints buffer | | RET gdb-frames-select | SPC gdb-toggle-breakpoint | | | RET gdb-goto-breakpoint | | | d gdb-delete-breakpoint | +-------------------------------+------------------------------+" ;; (interactive (list (gud-query-cmdline 'gdbmi))) ;; ;; Let's start with a basic gud-gdb buffer and then modify it a bit. (gdb command-line) ;; (setq gdb-debug-ring nil) (set (make-local-variable 'gud-minor-mode) 'gdbmi) (set (make-local-variable 'gud-marker-filter) 'gud-gdbmi-marker-filter) ;; (gud-def gud-step "-exec-step %p" "\C-s" "Step one source line with display.") (gud-def gud-stepi "-exec-step-instruction %p" "\C-i" "Step one instruction with display.") (gud-def gud-next "-exec-next %p" "\C-n" "Step one line (skip functions).") (gud-def gud-cont "-exec-continue" "\C-r" "Continue with display.") (gud-def gud-finish "-exec-finish" "\C-f" "Finish executing current function.") (gud-def gud-run "-exec-run" nil "Run the program.") (gud-def gud-break (if (not (string-equal mode-name "Machine")) (gud-call "break %f:%l" arg) (save-excursion (beginning-of-line) (forward-char 2) (gud-call "break *%a" arg))) "\C-b" "Set breakpoint at current line or address.") ;; (gud-def gud-remove (if (not (string-equal mode-name "Machine")) (gud-call "clear %f:%l" arg) (save-excursion (beginning-of-line) (forward-char 2) (gud-call "clear *%a" arg))) "\C-d" "Remove breakpoint at current line or address.") ;; (gud-def gud-until (if (not (string-equal mode-name "Machine")) (gud-call "-exec-until %f:%l" arg) (save-excursion (beginning-of-line) (forward-char 2) (gud-call "-exec-until *%a" arg))) "\C-u" "Continue to current line or address.") (define-key gud-minor-mode-map [left-margin mouse-1] 'gdb-mouse-set-clear-breakpoint) (define-key gud-minor-mode-map [left-fringe mouse-1] 'gdb-mouse-set-clear-breakpoint) (define-key gud-minor-mode-map [left-fringe mouse-2] 'gdb-mouse-until) (define-key gud-minor-mode-map [left-fringe drag-mouse-1] 'gdb-mouse-until) (define-key gud-minor-mode-map [left-margin mouse-3] 'gdb-mouse-toggle-breakpoint-margin) (define-key gud-minor-mode-map [left-fringe mouse-3] 'gdb-mouse-toggle-breakpoint-fringe) (setq comint-input-sender 'gdbmi-send) ;; ;; (re-)initialise (setq gdb-pc-address (if gdb-show-main "main" nil) gdb-previous-frame-address nil gdb-memory-address "main" gdb-previous-frame nil gdb-selected-frame nil gdb-frame-number nil gdb-var-list nil gdb-prompting nil gdb-input-queue nil gdb-current-item nil gdb-pending-triggers nil gdb-output-sink 'user gdb-server-prefix nil gdb-flush-pending-output nil gdb-location-alist nil gdb-source-file-list nil gdb-last-command nil gdb-prompt-name nil gdb-buffer-fringe-width (car (window-fringes))) gdb-debug-ring nil gdb-source-window nil gdb-inferior-status nil gdb-continuation nil ;; (setq gdb-buffer-type 'gdbmi) ;; ;; FIXME: use tty command to separate io. ;;(gdb-clear-inferior-io) ;; (if (eq window-system 'w32) (gdb-enqueue-input (list "-gdb-set new-console off\n" 'ignore))) (gdb-enqueue-input (list "-gdb-set height 0\n" 'ignore)) ;; find source file and compilation directory here (gdb-enqueue-input ; Needs GDB 6.2 onwards. (list "-file-list-exec-source-files\n" 'gdb-set-gud-minor-mode-existing-buffers-1)) (gdb-enqueue-input ; Needs GDB 6.0 onwards. (list "-file-list-exec-source-file\n" 'gdb-get-source-file)) (gdb-enqueue-input (list "-data-list-register-names\n" 'gdb-get-register-names)) (gdb-enqueue-input (list "-gdb-show prompt\n" 'gdb-get-prompt)) ;; (setq gdb-locals-font-lock-keywords gdb-locals-font-lock-keywords-2) (run-hooks 'gdbmi-mode-hook)) (defun gdbmi-send (proc string) "A comint send filter for gdb." (if gud-running (process-send-string proc (concat string "\n")) (with-current-buffer gud-comint-buffer (let ((inhibit-read-only t)) (remove-text-properties (point-min) (point-max) '(face)))) (setq gdb-output-sink 'user) (setq gdb-prompting nil) ;; mimic <RET> key to repeat previous command in GDB (if (not (string-match "^\\s+$" string)) (setq gdb-last-command string) (if gdb-last-command (setq string gdb-last-command))) (if gdb-enable-debug (push (cons 'mi-send (concat string "\n")) gdb-debug-ring)) (if (string-match "^-" string) ;; MI command (process-send-string proc (concat string "\n")) ;; CLI command (if (string-match "\\\\$" string) (setq gdb-continuation (concat gdb-continuation string "\n")) (process-send-string proc (concat "-interpreter-exec console \"" gdb-continuation string "\"\n")) (setq gdb-continuation nil))))) (defcustom gud-gdbmi-command-name "gdb -interp=mi" "Default command to execute an executable under the GDB-UI debugger." :type 'string :group 'gud) (defconst gdb-gdb-regexp "(gdb) \n") (defconst gdb-running-regexp (concat "\\^running\n" gdb-gdb-regexp)) ;; fullname added GDB 6.4+. ;; Probably not needed. -stack-info-frame computes filename and line. (defconst gdb-stopped-regexp "\\*stopped,reason=.*?,file=\".*?\"\ ,fullname=\"\\(.*?\\)\",line=\"\\(.*?\\)\"}\n") (defconst gdb-error-regexp "\\^error,msg=\\(\".+\"\\)\n") (defconst gdb-done-regexp "\\^done,*\n*") (defconst gdb-console-regexp "~\\(\".*?[^\\]\"\\)\n") (defconst gdb-internals-regexp "&\\(\".*?\\n\"\\)\n") (defun gdbmi-prompt1 () "Queue any GDB commands that the user interface needs." (unless gdb-pending-triggers (gdbmi-get-selected-frame) (gdbmi-invalidate-frames) (gdbmi-invalidate-breakpoints) (gdb-get-changed-registers) (gdb-invalidate-registers-1) (gdb-invalidate-locals-1) (if (and (boundp 'speedbar-frame) (frame-live-p speedbar-frame)) (gdb-var-update-1)))) (defun gdbmi-prompt2 () "Handle any output and send next GDB command." (let ((sink gdb-output-sink)) (when (eq sink 'emacs) (let ((handler (car (cdr gdb-current-item)))) (with-current-buffer (gdb-get-buffer-create 'gdb-partial-output-buffer) (funcall handler))))) (let ((input (gdb-dequeue-input))) (if input (gdb-send-item input) (progn (setq gud-running nil) (setq gdb-prompting t) (gud-display-frame))))) (defun gud-gdbmi-marker-filter (string) "Filter GDB/MI output." (if gdb-flush-pending-output nil (if gdb-enable-debug (push (cons 'recv (list string gdb-output-sink)) gdb-debug-ring)) ;; Recall the left over gud-marker-acc from last time (setq gud-marker-acc (concat gud-marker-acc string)) ;; Start accumulating output for the GUD buffer (let ((output "") running) (if (string-match gdb-running-regexp gud-marker-acc) (setq gud-marker-acc (concat (substring gud-marker-acc 0 (match-beginning 0)) (substring gud-marker-acc (match-end 0))) running t)) (if (string-match gdb-stopped-regexp gud-marker-acc) (setq ;; Extract the frame position from the marker. gud-last-frame (cons (match-string 1 gud-marker-acc) (string-to-number (match-string 2 gud-marker-acc))) gud-marker-acc (concat (substring gud-marker-acc 0 (match-beginning 0)) (substring gud-marker-acc (match-end 0))))) ;; Filter error messages going to GUD buffer and ;; display in minibuffer. (when (eq gdb-output-sink 'user) (while (string-match gdb-error-regexp gud-marker-acc) (message (read (match-string 1 gud-marker-acc))) (setq gud-marker-acc (concat (substring gud-marker-acc 0 (match-beginning 0)) (substring gud-marker-acc (match-end 0))))) (if (string-match gdb-done-regexp gud-marker-acc) (setq gud-marker-acc (concat (substring gud-marker-acc 0 (match-beginning 0)) (substring gud-marker-acc (match-end 0)))))) (when (string-match gdb-gdb-regexp gud-marker-acc) (setq gud-marker-acc (concat (substring gud-marker-acc 0 (match-beginning 0)) (substring gud-marker-acc (match-end 0)))) ;; Remove the trimmings from the console stream. (while (string-match gdb-console-regexp gud-marker-acc) (setq gud-marker-acc (concat (substring gud-marker-acc 0 (match-beginning 0)) (read (match-string 1 gud-marker-acc)) (substring gud-marker-acc (match-end 0))))) ;; Remove the trimmings from log stream containing debugging messages ;; being produced by GDB's internals and use warning face. (while (string-match gdb-internals-regexp gud-marker-acc) (setq gud-marker-acc (concat (substring gud-marker-acc 0 (match-beginning 0)) (let ((error-message (read (match-string 1 gud-marker-acc)))) (put-text-property 0 (length error-message) 'face font-lock-warning-face error-message) error-message) (substring gud-marker-acc (match-end 0))))) (setq output (gdbmi-concat-output output gud-marker-acc)) (setq gud-marker-acc "") (gdbmi-prompt1) (unless gdb-input-queue (setq output (concat output gdb-prompt-name))) (gdbmi-prompt2) (setq gud-running running)) (when gud-running (setq output (gdbmi-concat-output output gud-marker-acc)) (setq gud-marker-acc "")) output))) (defun gdbmi-concat-output (so-far new) (let ((sink gdb-output-sink)) (cond ((eq sink 'user) (concat so-far new)) ((eq sink 'emacs) (gdb-append-to-partial-output new) so-far) ((eq sink 'inferior) (gdb-append-to-inferior-io new) so-far)))) ;; Breakpoint buffer : This displays the output of `-break-list'. ;; (def-gdb-auto-update-trigger gdbmi-invalidate-breakpoints (gdb-get-buffer 'gdb-breakpoints-buffer) "-break-list\n" gdb-break-list-handler) (defconst gdb-break-list-regexp "bkpt={.*?number=\"\\(.*?\\)\",.*?type=\"\\(.*?\\)\",.*?disp=\"\\(.*?\\)\",.*?\ enabled=\"\\(.\\)\",.*?addr=\"\\(.*?\\)\",\\(?:.*?func=\"\\(.*?\\)\",.*?\ file=\"\\(.*?\\)\",.*?fullname=\".*?\",.*?line=\"\\(.*?\\)\",\ \\|\\(?:.*?what=\"\\(.*?\\)\",\\)*\\).*?times=\"\\(.*?\\)\".*?}") (defun gdb-break-list-handler () (setq gdb-pending-triggers (delq 'gdbmi-invalidate-breakpoints gdb-pending-triggers)) (let ((breakpoint) (breakpoints-list)) (with-current-buffer (gdb-get-buffer-create 'gdb-partial-output-buffer) (goto-char (point-min)) (while (re-search-forward gdb-break-list-regexp nil t) (let ((breakpoint (list (match-string 1) (match-string 2) (match-string 3) (match-string 4) (match-string 5) (match-string 6) (match-string 7) (match-string 8) (match-string 9) (match-string 10)))) (push breakpoint breakpoints-list)))) (let ((buf (gdb-get-buffer 'gdb-breakpoints-buffer))) (and buf (with-current-buffer buf (let ((p (point)) (buffer-read-only nil)) (erase-buffer) (insert "Num Type Disp Enb Hits Addr What\n") (dolist (breakpoint breakpoints-list) (insert (concat (nth 0 breakpoint) " " (nth 1 breakpoint) " " (nth 2 breakpoint) " " (nth 3 breakpoint) " " (nth 9 breakpoint) " " (nth 4 breakpoint) " " (if (nth 5 breakpoint) (concat "in " (nth 5 breakpoint) " at " (nth 6 breakpoint) ":" (nth 7 breakpoint) "\n") (concat (nth 8 breakpoint) "\n"))))) (goto-char p)))))) (gdb-info-breakpoints-custom)) (defun gdbmi-get-location (bptno line flag) "Find the directory containing the relevant source file. Put in buffer and place breakpoint icon." (goto-char (point-min)) (catch 'file-not-found (if (re-search-forward gdb-source-file-regexp-1 nil t) (delete (cons bptno "File not found") gdb-location-alist) (push (cons bptno (match-string 1)) gdb-location-alist) (gdb-resync) (unless (assoc bptno gdb-location-alist) (push (cons bptno "File not found") gdb-location-alist) (message-box "Cannot find source file for breakpoint location. Add directory to search path for source files using the GDB command, dir.")) (throw 'file-not-found nil)) (with-current-buffer (find-file-noselect (match-string 1)) (save-current-buffer (set (make-local-variable 'gud-minor-mode) 'gdbmi) (set (make-local-variable 'tool-bar-map) gud-tool-bar-map)) ;; only want one breakpoint icon at each location (save-excursion (goto-line (string-to-number line)) (gdb-put-breakpoint-icon (eq flag ?y) bptno))))) ;; Frames buffer. This displays a perpetually correct bactrack trace. ;; (def-gdb-auto-update-trigger gdbmi-invalidate-frames (gdb-get-buffer 'gdb-stack-buffer) "-stack-list-frames\n" gdb-stack-list-frames-handler) (defconst gdb-stack-list-frames-regexp "{.*?level=\"\\(.*?\\)\",.*?addr=\"\\(.*?\\)\",.*?func=\"\\(.*?\\)\",\ \\(?:.*?file=\".*?\",.*?fullname=\"\\(.*?\\)\",.*?line=\"\\(.*?\\)\".*?}\\|\ from=\"\\(.*?\\)\"\\)") (defun gdb-stack-list-frames-handler () (setq gdb-pending-triggers (delq 'gdbmi-invalidate-frames gdb-pending-triggers)) (let ((frame nil) (call-stack nil)) (with-current-buffer (gdb-get-buffer-create 'gdb-partial-output-buffer) (goto-char (point-min)) (while (re-search-forward gdb-stack-list-frames-regexp nil t) (let ((frame (list (match-string 1) (match-string 2) (match-string 3) (match-string 4) (match-string 5) (match-string 6)))) (push frame call-stack)))) (let ((buf (gdb-get-buffer 'gdb-stack-buffer))) (and buf (with-current-buffer buf (let ((p (point)) (buffer-read-only nil)) (erase-buffer) (insert "Level\tAddr\tFunc\tFile:Line\n") (dolist (frame (nreverse call-stack)) (insert (concat (nth 0 frame) "\t" (nth 1 frame) "\t" (propertize (nth 2 frame) 'face font-lock-function-name-face) "\t" (if (nth 3 frame) (concat "at "(nth 3 frame) ":" (nth 4 frame) "\n") (concat "from " (nth 5 frame) "\n"))))) (goto-char p)))))) (gdb-stack-list-frames-custom)) (defun gdb-stack-list-frames-custom () (with-current-buffer (gdb-get-buffer 'gdb-stack-buffer) (save-excursion (let ((buffer-read-only nil)) (goto-char (point-min)) (forward-line 1) (while (< (point) (point-max)) (add-text-properties (point-at-bol) (point-at-eol) '(mouse-face highlight help-echo "mouse-2, RET: Select frame")) (beginning-of-line) (when (and (looking-at "^[0-9]+\\s-+\\(\\S-+\\)") (equal (match-string 1) gdb-selected-frame)) (put-text-property (point-at-bol) (point-at-eol) 'face '(:inverse-video t))) (forward-line 1)))))) ;; gdb-ui.el uses "info source" to find out if macro information is present. (defun gdb-get-source-file () "Find the source file where the program starts and display it with related buffers, if required." (goto-char (point-min)) (if (re-search-forward gdb-source-file-regexp-1 nil t) (setq gdb-main-file (match-string 1))) (if gdb-many-windows (gdb-setup-windows) (gdb-get-buffer-create 'gdb-breakpoints-buffer) (if gdb-show-main (let ((pop-up-windows t)) (display-buffer (gud-find-file gdb-main-file)))))) (defun gdbmi-get-selected-frame () (if (not (member 'gdbmi-get-selected-frame gdb-pending-triggers)) (progn (gdb-enqueue-input (list "-stack-info-frame\n" 'gdbmi-frame-handler)) (push 'gdbmi-get-selected-frame gdb-pending-triggers)))) (defun gdbmi-frame-handler () (setq gdb-pending-triggers (delq 'gdbmi-get-selected-frame gdb-pending-triggers)) (with-current-buffer (gdb-get-buffer-create 'gdb-partial-output-buffer) (goto-char (point-min)) (when (re-search-forward gdb-stack-list-frames-regexp nil t) (setq gdb-frame-number (match-string 1)) (setq gdb-pc-address (match-string 2)) (setq gdb-selected-frame (match-string 3)) (when (match-string 4) (setq gud-last-frame (cons (match-string 4) (string-to-number (match-string 5)))) (gud-display-frame) (if gud-overlay-arrow-position (let ((buffer (marker-buffer gud-overlay-arrow-position)) (position (marker-position gud-overlay-arrow-position))) (when buffer (with-current-buffer buffer (setq fringe-indicator-alist (if (string-equal gdb-frame-number "0") nil '((overlay-arrow . hollow-right-triangle)))) (setq gud-overlay-arrow-position (make-marker)) (set-marker gud-overlay-arrow-position position)))))) (if (gdb-get-buffer 'gdb-locals-buffer) (with-current-buffer (gdb-get-buffer 'gdb-locals-buffer) (setq mode-name (concat "Locals:" gdb-selected-frame)))) (if (gdb-get-buffer 'gdb-assembler-buffer) (with-current-buffer (gdb-get-buffer 'gdb-assembler-buffer) (setq mode-name (concat "Machine:" gdb-selected-frame))))))) (defvar gdb-prompt-name-regexp "value=\"\\(.*?\\)\"") (defun gdb-get-prompt () "Find prompt for GDB session." (goto-char (point-min)) (setq gdb-prompt-name nil) (re-search-forward gdb-prompt-name-regexp nil t) (setq gdb-prompt-name (match-string 1))) (provide 'gdb-mi) ;;; gdbmi.el ends here
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