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