| (defmacro gud (form) |
| (` (save-excursion (set-buffer "*gud-a.out*") (, form)))) |
| |
| (defun dbug (foo &optional fun) |
| (save-excursion |
| (set-buffer (get-buffer-create "*trace*")) |
| (goto-char (point-max)) |
| (insert "***" (symbol-name foo) "\n") |
| (if fun |
| (funcall fun)))) |
| |
| |
| ;;; gud.el --- Grand Unified Debugger mode for gdb, sdb, dbx, or xdb |
| ;;; under Emacs |
| |
| ;; Author: Eric S. Raymond <esr@snark.thyrsus.com> |
| ;; Maintainer: FSF |
| ;; Version: 1.3 |
| ;; Keywords: unix, tools |
| |
| ;; Copyright (C) 1992, 1993 Free Software Foundation, Inc. |
| |
| ;; This file is part of GNU Emacs. |
| |
| ;; GNU Emacs 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. |
| |
| ;; GNU Emacs 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. |
| |
| ;; You should have received a copy of the GNU General Public License |
| ;; along with GNU Emacs; if not, write to the Free Software |
| ;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| |
| ;;; Commentary: |
| |
| ;; The ancestral gdb.el was by W. Schelter <wfs@rascal.ics.utexas.edu> |
| ;; It was later rewritten by rms. Some ideas were due to Masanobu. |
| ;; Grand Unification (sdb/dbx support) by Eric S. Raymond <esr@thyrsus.com> |
| ;; The overloading code was then rewritten by Barry Warsaw <bwarsaw@cen.com>, |
| ;; who also hacked the mode to use comint.el. Shane Hartman <shane@spr.com> |
| ;; added support for xdb (HPUX debugger). |
| |
| ;; Cygnus Support added support for gdb's --annotate=2. |
| |
| ;;; Code: |
| |
| (require 'comint) |
| (require 'etags) |
| |
| ;; ====================================================================== |
| ;; GUD commands must be visible in C buffers visited by GUD |
| |
| (defvar gud-key-prefix "\C-x\C-a" |
| "Prefix of all GUD commands valid in C buffers.") |
| |
| (global-set-key (concat gud-key-prefix "\C-l") 'gud-refresh) |
| (global-set-key "\C-x " 'gud-break) ;; backward compatibility hack |
| |
| ;; ====================================================================== |
| ;; the overloading mechanism |
| |
| (defun gud-overload-functions (gud-overload-alist) |
| "Overload functions defined in GUD-OVERLOAD-ALIST. |
| This association list has elements of the form |
| (ORIGINAL-FUNCTION-NAME OVERLOAD-FUNCTION)" |
| (mapcar |
| (function (lambda (p) (fset (car p) (symbol-function (cdr p))))) |
| gud-overload-alist)) |
| |
| (defun gud-massage-args (file args) |
| (error "GUD not properly entered.")) |
| |
| (defun gud-marker-filter (str) |
| (error "GUD not properly entered.")) |
| |
| (defun gud-find-file (f) |
| (error "GUD not properly entered.")) |
| |
| ;; ====================================================================== |
| ;; command definition |
| |
| ;; This macro is used below to define some basic debugger interface commands. |
| ;; Of course you may use `gud-def' with any other debugger command, including |
| ;; user defined ones. |
| |
| ;; A macro call like (gud-def FUNC NAME KEY DOC) expands to a form |
| ;; which defines FUNC to send the command NAME to the debugger, gives |
| ;; it the docstring DOC, and binds that function to KEY in the GUD |
| ;; major mode. The function is also bound in the global keymap with the |
| ;; GUD prefix. |
| |
| (defmacro gud-def (func cmd key &optional doc) |
| "Define FUNC to be a command sending STR and bound to KEY, with |
| optional doc string DOC. Certain %-escapes in the string arguments |
| are interpreted specially if present. These are: |
| |
| %f name (without directory) of current source file. |
| %d directory of current source file. |
| %l number of current source line |
| %e text of the C lvalue or function-call expression surrounding point. |
| %a text of the hexadecimal address surrounding point |
| %p prefix argument to the command (if any) as a number |
| |
| The `current' source file is the file of the current buffer (if |
| we're in a C file) or the source file current at the last break or |
| step (if we're in the GUD buffer). |
| The `current' line is that of the current buffer (if we're in a |
| source file) or the source line number at the last break or step (if |
| we're in the GUD buffer)." |
| (list 'progn |
| (list 'defun func '(arg) |
| (or doc "") |
| '(interactive "p") |
| (list 'gud-call cmd 'arg)) |
| (if key |
| (list 'define-key |
| '(current-local-map) |
| (concat "\C-c" key) |
| (list 'quote func))) |
| (if key |
| (list 'global-set-key |
| (list 'concat 'gud-key-prefix key) |
| (list 'quote func))))) |
| |
| ;; Where gud-display-frame should put the debugging arrow. This is |
| ;; set by the marker-filter, which scans the debugger's output for |
| ;; indications of the current program counter. |
| (defvar gud-last-frame nil) |
| |
| ;; Used by gud-refresh, which should cause gud-display-frame to redisplay |
| ;; the last frame, even if it's been called before and gud-last-frame has |
| ;; been set to nil. |
| (defvar gud-last-last-frame nil) |
| |
| ;; All debugger-specific information is collected here. |
| ;; Here's how it works, in case you ever need to add a debugger to the mode. |
| ;; |
| ;; Each entry must define the following at startup: |
| ;; |
| ;;<name> |
| ;; comint-prompt-regexp |
| ;; gud-<name>-massage-args |
| ;; gud-<name>-marker-filter |
| ;; gud-<name>-find-file |
| ;; |
| ;; The job of the massage-args method is to modify the given list of |
| ;; debugger arguments before running the debugger. |
| ;; |
| ;; The job of the marker-filter method is to detect file/line markers in |
| ;; strings and set the global gud-last-frame to indicate what display |
| ;; action (if any) should be triggered by the marker. Note that only |
| ;; whatever the method *returns* is displayed in the buffer; thus, you |
| ;; can filter the debugger's output, interpreting some and passing on |
| ;; the rest. |
| ;; |
| ;; The job of the find-file method is to visit and return the buffer indicated |
| ;; by the car of gud-tag-frame. This may be a file name, a tag name, or |
| ;; something else. |
| |
| ;; ====================================================================== |
| ;; gdb functions |
| |
| ;;; History of argument lists passed to gdb. |
| (defvar gud-gdb-history nil) |
| |
| (defun gud-gdb-massage-args (file args) |
| (cons "--annotate=2" (cons file args))) |
| |
| |
| ;; |
| ;; In this world, there are gdb instance objects (of unspecified |
| ;; representation) and buffers associated with those objects. |
| ;; |
| |
| ;; |
| ;; gdb-instance objects |
| ;; |
| |
| (defun make-gdb-instance (proc) |
| "Create a gdb instance object from a gdb process." |
| (setq last-proc proc) |
| (let ((instance (cons 'gdb-instance proc))) |
| (save-excursion |
| (set-buffer (process-buffer proc)) |
| (setq gdb-buffer-instance instance) |
| (progn |
| (mapcar 'make-variable-buffer-local gdb-instance-variables) |
| (setq gdb-buffer-type 'gud) |
| ;; If we're taking over the buffer of another process, |
| ;; take over it's ancillery buffers as well. |
| ;; |
| (let ((dead (or old-gdb-buffer-instance))) |
| (mapcar |
| (function |
| (lambda (b) |
| (progn |
| (set-buffer b) |
| (if (eq dead gdb-buffer-instance) |
| (setq gdb-buffer-instance instance))))) |
| (buffer-list))))) |
| instance)) |
| |
| (defun gdb-instance-process (inst) (cdr inst)) |
| |
| ;;; The list of instance variables is built up by the expansions of |
| ;;; DEF-GDB-VARIABLE |
| ;;; |
| (defvar gdb-instance-variables '() |
| "A list of variables that are local to the gud buffer associated |
| with a gdb instance.") |
| |
| (defmacro def-gdb-variable |
| (name accessor setter &optional default doc) |
| (` |
| (progn |
| (defvar (, name) (, default) (, (or doc "undocumented"))) |
| (if (not (memq '(, name) gdb-instance-variables)) |
| (setq gdb-instance-variables |
| (cons '(, name) gdb-instance-variables))) |
| (, (and accessor |
| (` |
| (defun (, accessor) (instance) |
| (let |
| ((buffer (gdb-get-instance-buffer instance 'gud))) |
| (and buffer |
| (save-excursion |
| (set-buffer buffer) |
| (, name)))))))) |
| (, (and setter |
| (` |
| (defun (, setter) (instance val) |
| (let |
| ((buffer (gdb-get-instance-buffer instance 'gud))) |
| (and buffer |
| (save-excursion |
| (set-buffer buffer) |
| (setq (, name) val))))))))))) |
| |
| (defmacro def-gdb-var (root-symbol &optional default doc) |
| (let* ((root (symbol-name root-symbol)) |
| (accessor (intern (concat "gdb-instance-" root))) |
| (setter (intern (concat "set-gdb-instance-" root))) |
| (var-name (intern (concat "gdb-" root)))) |
| (` (def-gdb-variable |
| (, var-name) (, accessor) (, setter) |
| (, default) (, doc))))) |
| |
| (def-gdb-var buffer-instance nil |
| "In an instance buffer, the buffer's instance.") |
| |
| (def-gdb-var buffer-type nil |
| "One of the symbols bound in gdb-instance-buffer-rules") |
| |
| (def-gdb-var burst "" |
| "A string of characters from gdb that have not yet been processed.") |
| |
| (def-gdb-var input-queue () |
| "A list of high priority gdb command objects.") |
| |
| (def-gdb-var idle-input-queue () |
| "A list of low priority gdb command objects.") |
| |
| (def-gdb-var prompting nil |
| "True when gdb is idle with no pending input.") |
| |
| (def-gdb-var output-sink 'user |
| "The disposition of the output of the current gdb command. |
| Possible values are these symbols: |
| |
| user -- gdb output should be copied to the gud buffer |
| for the user to see. |
| |
| inferior -- gdb output should be copied to the inferior-io buffer |
| |
| pre-emacs -- output should be ignored util the post-prompt |
| annotation is received. Then the output-sink |
| becomes:... |
| emacs -- output should be collected in the partial-output-buffer |
| for subsequent processing by a command. This is the |
| disposition of output generated by commands that |
| gud mode sends to gdb on its own behalf. |
| post-emacs -- ignore input until the prompt annotation is |
| received, then go to USER disposition. |
| ") |
| |
| (def-gdb-var current-item nil |
| "The most recent command item sent to gdb.") |
| |
| (def-gdb-var pending-triggers '() |
| "A list of trigger functions that have run later than their output |
| handlers.") |
| |
| (defun in-gdb-instance-context (instance form) |
| "Funcall `form' in the gud buffer of `instance'" |
| (save-excursion |
| (set-buffer (gdb-get-instance-buffer instance 'gud)) |
| (funcall form))) |
| |
| ;; end of instance vars |
| |
| ;; |
| ;; finding instances |
| ;; |
| |
| (defun gdb-proc->instance (proc) |
| (save-excursion |
| (set-buffer (process-buffer proc)) |
| gdb-buffer-instance)) |
| |
| (defun gdb-mru-instance-buffer () |
| "Return the most recently used (non-auxiliary) gdb gud buffer." |
| (save-excursion |
| (gdb-goto-first-gdb-instance (buffer-list)))) |
| |
| (defun gdb-goto-first-gdb-instance (blist) |
| "Use gdb-mru-instance-buffer -- not this." |
| (and blist |
| (progn |
| (set-buffer (car blist)) |
| (or (and gdb-buffer-instance |
| (eq gdb-buffer-type 'gud) |
| (car blist)) |
| (gdb-goto-first-gdb-instance (cdr blist)))))) |
| |
| (defun buffer-gdb-instance (buf) |
| (save-excursion |
| (set-buffer buf) |
| gdb-buffer-instance)) |
| |
| (defun gdb-needed-default-instance () |
| "Return the most recently used gdb instance or signal an error." |
| (let ((buffer (gdb-mru-instance-buffer))) |
| (or (and buffer (buffer-gdb-instance buffer)) |
| (error "No instance of gdb found.")))) |
| |
| (defun gdb-instance-target-string (instance) |
| "The apparent name of the program being debugged by a gdb instance. |
| For sure this the root string used in smashing together the gud |
| buffer's name, even if that doesn't happen to be the name of a |
| program." |
| (in-gdb-instance-context |
| instance |
| (function (lambda () gud-target-name)))) |
| |
| |
| |
| ;; |
| ;; Instance Buffers. |
| ;; |
| |
| ;; More than one buffer can be associated with a gdb instance. |
| ;; |
| ;; Each buffer has a TYPE -- a symbol that identifies the function |
| ;; of that particular buffer. |
| ;; |
| ;; The usual gud interaction buffer is given the type `gud' and |
| ;; is constructed specially. |
| ;; |
| ;; Others are constructed by gdb-get-create-instance-buffer and |
| ;; named according to the rules set forth in the gdb-instance-buffer-rules-assoc |
| |
| (defun gdb-get-instance-buffer (instance key) |
| "Return the instance buffer for `instance' tagged with type `key'. |
| The key should be one of the cars in `gdb-instance-buffer-rules-assoc'." |
| (save-excursion |
| (gdb-look-for-tagged-buffer instance key (buffer-list)))) |
| |
| (defun gdb-get-create-instance-buffer (instance key) |
| "Create a new gdb instance buffer of the type specified by `key'. |
| The key should be one of the cars in `gdb-instance-buffer-rules-assoc'." |
| (or (gdb-get-instance-buffer instance key) |
| (let* ((rules (assoc key gdb-instance-buffer-rules-assoc)) |
| (name (funcall (gdb-rules-name-maker rules) instance)) |
| (new (get-buffer-create name))) |
| (save-excursion |
| (set-buffer new) |
| (make-variable-buffer-local 'gdb-buffer-type) |
| (setq gdb-buffer-type key) |
| (make-variable-buffer-local 'gdb-buffer-instance) |
| (setq gdb-buffer-instance instance) |
| (if (cdr (cdr rules)) |
| (funcall (car (cdr (cdr rules))))) |
| new)))) |
| |
| (defun gdb-rules-name-maker (rules) (car (cdr rules))) |
| |
| (defun gdb-look-for-tagged-buffer (instance key bufs) |
| (let ((retval nil)) |
| (while (and (not retval) bufs) |
| (set-buffer (car bufs)) |
| (if (and (eq gdb-buffer-instance instance) |
| (eq gdb-buffer-type key)) |
| (setq retval (car bufs))) |
| (setq bufs (cdr bufs)) |
| ) |
| retval)) |
| |
| (defun gdb-instance-buffer-p (buf) |
| (save-excursion |
| (set-buffer buf) |
| (and gdb-buffer-type |
| (not (eq gdb-buffer-type 'gud))))) |
| |
| ;; |
| ;; This assoc maps buffer type symbols to rules. Each rule is a list of |
| ;; at least one and possible more functions. The functions have these |
| ;; roles in defining a buffer type: |
| ;; |
| ;; NAME - take an instance, return a name for this type buffer for that |
| ;; instance. |
| ;; The remaining function(s) are optional: |
| ;; |
| ;; MODE - called in new new buffer with no arguments, should establish |
| ;; the proper mode for the buffer. |
| ;; |
| |
| (defvar gdb-instance-buffer-rules-assoc '()) |
| |
| (defun gdb-set-instance-buffer-rules (buffer-type &rest rules) |
| (let ((binding (assoc buffer-type gdb-instance-buffer-rules-assoc))) |
| (if binding |
| (setcdr binding rules) |
| (setq gdb-instance-buffer-rules-assoc |
| (cons (cons buffer-type rules) |
| gdb-instance-buffer-rules-assoc))))) |
| |
| (gdb-set-instance-buffer-rules 'gud 'error) ; gud buffers are an exception to the rules |
| |
| ;; |
| ;; partial-output buffers |
| ;; |
| ;; These accumulate output from a command executed on |
| ;; behalf of emacs (rather than the user). |
| ;; |
| |
| (gdb-set-instance-buffer-rules 'gdb-partial-output-buffer |
| 'gdb-partial-output-name) |
| |
| (defun gdb-partial-output-name (instance) |
| (concat "*partial-output-" |
| (gdb-instance-target-string instance) |
| "*")) |
| |
| |
| (gdb-set-instance-buffer-rules 'gdb-inferior-io |
| 'gdb-inferior-io-name |
| 'gud-inferior-io-mode) |
| |
| (defun gdb-inferior-io-name (instance) |
| (concat "*input/output of " |
| (gdb-instance-target-string instance) |
| "*")) |
| |
| (defvar gdb-inferior-io-mode-map (copy-keymap comint-mode-map)) |
| (define-key comint-mode-map "\C-c\C-c" 'gdb-inferior-io-interrupt) |
| (define-key comint-mode-map "\C-c\C-z" 'gdb-inferior-io-stop) |
| (define-key comint-mode-map "\C-c\C-\\" 'gdb-inferior-io-quit) |
| (define-key comint-mode-map "\C-c\C-d" 'gdb-inferior-io-eof) |
| |
| (defun gud-inferior-io-mode () |
| "Major mode for gud inferior-io. |
| |
| \\{comint-mode-map}" |
| ;; We want to use comint because it has various nifty and familiar |
| ;; features. We don't need a process, but comint wants one, so create |
| ;; a dummy one. |
| (make-comint (substring (buffer-name) 1 (- (length (buffer-name)) 1)) |
| "/bin/cat") |
| (setq major-mode 'gud-inferior-io-mode) |
| (setq mode-name "Debuggee I/O") |
| (setq comint-input-sender 'gud-inferior-io-sender) |
| ) |
| |
| (defun gud-inferior-io-sender (proc string) |
| (save-excursion |
| (set-buffer (process-buffer proc)) |
| (let ((instance gdb-buffer-instance)) |
| (set-buffer (gdb-get-instance-buffer instance 'gud)) |
| (let ((gud-proc (get-buffer-process (current-buffer)))) |
| (process-send-string gud-proc string) |
| (process-send-string gud-proc "\n") |
| )) |
| )) |
| |
| (defun gdb-inferior-io-interrupt (instance) |
| "Interrupt the program being debugged." |
| (interactive (list (gdb-needed-default-instance))) |
| (interrupt-process |
| (get-buffer-process (gdb-get-instance-buffer instance 'gud)) comint-ptyp)) |
| |
| (defun gdb-inferior-io-quit (instance) |
| "Send quit signal to the program being debugged." |
| (interactive (list (gdb-needed-default-instance))) |
| (quit-process |
| (get-buffer-process (gdb-get-instance-buffer instance 'gud)) comint-ptyp)) |
| |
| (defun gdb-inferior-io-stop (instance) |
| "Stop the program being debugged." |
| (interactive (list (gdb-needed-default-instance))) |
| (stop-process |
| (get-buffer-process (gdb-get-instance-buffer instance 'gud)) comint-ptyp)) |
| |
| (defun gdb-inferior-io-eof (instance) |
| "Send end-of-file to the program being debugged." |
| (interactive (list (gdb-needed-default-instance))) |
| (process-send-eof |
| (get-buffer-process (gdb-get-instance-buffer instance 'gud)))) |
| |
| |
| ;; |
| ;; gdb communications |
| ;; |
| |
| ;; INPUT: things sent to gdb |
| ;; |
| ;; Each instance has a high and low priority |
| ;; input queue. Low priority input is sent only |
| ;; when the high priority queue is idle. |
| ;; |
| ;; The queues are lists. Each element is either |
| ;; a string (indicating user or user-like input) |
| ;; or a list of the form: |
| ;; |
| ;; (INPUT-STRING HANDLER-FN) |
| ;; |
| ;; |
| ;; The handler function will be called from the |
| ;; partial-output buffer when the command completes. |
| ;; This is the way to write commands which |
| ;; invoke gdb commands autonomously. |
| ;; |
| ;; These lists are consumed tail first. |
| ;; |
| |
| (defun gdb-send (proc string) |
| "A comint send filter for gdb. |
| This filter may simply queue output for a later time." |
| (let ((instance (gdb-proc->instance proc))) |
| (gdb-instance-enqueue-input instance (concat string "\n")))) |
| |
| ;; Note: Stuff enqueued here will be sent to the next prompt, even if it |
| ;; is a query, or other non-top-level prompt. To guarantee stuff will get |
| ;; sent to the top-level prompt, currently it must be put in the idle queue. |
| ;; ^^^^^^^^^ |
| ;; [This should encourage gud extentions that invoke gdb commands to let |
| ;; the user go first; it is not a bug. -t] |
| ;; |
| |
| (defun gdb-instance-enqueue-input (instance item) |
| (if (gdb-instance-prompting instance) |
| (progn |
| (gdb-send-item instance item) |
| (set-gdb-instance-prompting instance nil)) |
| (set-gdb-instance-input-queue |
| instance |
| (cons item (gdb-instance-input-queue instance))))) |
| |
| (defun gdb-instance-dequeue-input (instance) |
| (let ((queue (gdb-instance-input-queue instance))) |
| (and queue |
| (if (not (cdr queue)) |
| (let ((answer (car queue))) |
| (set-gdb-instance-input-queue instance '()) |
| answer) |
| (gdb-take-last-elt queue))))) |
| |
| (defun gdb-instance-enqueue-idle-input (instance item) |
| (if (and (gdb-instance-prompting instance) |
| (not (gdb-instance-input-queue instance))) |
| (progn |
| (gdb-send-item instance item) |
| (set-gdb-instance-prompting instance nil)) |
| (set-gdb-instance-idle-input-queue |
| instance |
| (cons item (gdb-instance-idle-input-queue instance))))) |
| |
| (defun gdb-instance-dequeue-idle-input (instance) |
| (let ((queue (gdb-instance-idle-input-queue instance))) |
| (and queue |
| (if (not (cdr queue)) |
| (let ((answer (car queue))) |
| (set-gdb-instance-idle-input-queue instance '()) |
| answer) |
| (gdb-take-last-elt queue))))) |
| |
| ; Don't use this in general. |
| (defun gdb-take-last-elt (l) |
| (if (cdr (cdr l)) |
| (gdb-take-last-elt (cdr l)) |
| (let ((answer (car (cdr l)))) |
| (setcdr l '()) |
| answer))) |
| |
| |
| ;; |
| ;; output -- things gdb prints to emacs |
| ;; |
| ;; GDB output is a stream interrupted by annotations. |
| ;; Annotations can be recognized by their beginning |
| ;; with \C-j\C-z\C-z<tag><opt>\C-j |
| ;; |
| ;; The tag is a string obeying symbol syntax. |
| ;; |
| ;; The optional part `<opt>' can be either the empty string |
| ;; or a space followed by more data relating to the annotation. |
| ;; For example, the SOURCE annotation is followed by a filename, |
| ;; line number and various useless goo. This data must not include |
| ;; any newlines. |
| ;; |
| |
| |
| (defun gud-gdb-marker-filter (string) |
| "A gud marker filter for gdb." |
| ;; Bogons don't tell us the process except through scoping crud. |
| (let ((instance (gdb-proc->instance proc))) |
| (gdb-output-burst instance string))) |
| |
| (defvar gdb-annotation-rules |
| '(("frames-invalid" gdb-invalidate-frames) |
| ("breakpoints-invalid" gdb-invalidate-breakpoints) |
| ("pre-prompt" gdb-pre-prompt) |
| ("prompt" gdb-prompt) |
| ("commands" gdb-subprompt) |
| ("overload-choice" gdb-subprompt) |
| ("query" gdb-subprompt) |
| ("prompt-for-continue" gdb-subprompt) |
| ("post-prompt" gdb-post-prompt) |
| ("source" gdb-source) |
| ("starting" gdb-starting) |
| ("exited" gdb-stopping) |
| ("signalled" gdb-stopping) |
| ("signal" gdb-stopping) |
| ("breakpoint" gdb-stopping) |
| ("watchpoint" gdb-stopping) |
| ("stopped" gdb-stopped) |
| ) |
| "An assoc mapping annotation tags to functions which process them.") |
| |
| |
| (defun gdb-ignore-annotation (instance args) |
| nil) |
| |
| (defconst gdb-source-spec-regexp |
| "\\(.*\\):\\([0-9]*\\):[0-9]*:[a-z]*:0x[a-f0-9]*") |
| |
| ;; Do not use this except as an annotation handler." |
| (defun gdb-source (instance args) |
| (string-match gdb-source-spec-regexp args) |
| ;; Extract the frame position from the marker. |
| (setq gud-last-frame |
| (cons |
| (substring args (match-beginning 1) (match-end 1)) |
| (string-to-int (substring args |
| (match-beginning 2) |
| (match-end 2)))))) |
| |
| ;; An annotation handler for `prompt'. |
| ;; This sends the next command (if any) to gdb. |
| (defun gdb-prompt (instance ignored) |
| (let ((sink (gdb-instance-output-sink instance))) |
| (cond |
| ((eq sink 'user) t) |
| ((eq sink 'post-emacs) |
| (set-gdb-instance-output-sink instance 'user)) |
| (t |
| (set-gdb-instance-output-sink instance 'user) |
| (error "Phase error in gdb-prompt (got %s)" sink)))) |
| (let ((highest (gdb-instance-dequeue-input instance))) |
| (if highest |
| (gdb-send-item instance highest) |
| (let ((lowest (gdb-instance-dequeue-idle-input instance))) |
| (if lowest |
| (gdb-send-item instance lowest) |
| (progn |
| (set-gdb-instance-prompting instance t) |
| (gud-display-frame))))))) |
| |
| ;; An annotation handler for non-top-level prompts. |
| (defun gdb-subprompt (instance ignored) |
| (let ((highest (gdb-instance-dequeue-input instance))) |
| (if highest |
| (gdb-send-item instance highest) |
| (set-gdb-instance-prompting instance t)))) |
| |
| (defun gdb-send-item (instance item) |
| (set-gdb-instance-current-item instance item) |
| (if (stringp item) |
| (progn |
| (set-gdb-instance-output-sink instance 'user) |
| (process-send-string (gdb-instance-process instance) |
| item)) |
| (progn |
| (gdb-clear-partial-output instance) |
| (set-gdb-instance-output-sink instance 'pre-emacs) |
| (process-send-string (gdb-instance-process instance) |
| (car item))))) |
| |
| ;; An annotation handler for `pre-prompt'. |
| ;; This terminates the collection of output from a previous |
| ;; command if that happens to be in effect. |
| (defun gdb-pre-prompt (instance ignored) |
| (let ((sink (gdb-instance-output-sink instance))) |
| (cond |
| ((eq sink 'user) t) |
| ((eq sink 'emacs) |
| (set-gdb-instance-output-sink instance 'post-emacs) |
| (let ((handler |
| (car (cdr (gdb-instance-current-item instance))))) |
| (save-excursion |
| (set-buffer (gdb-get-create-instance-buffer |
| instance 'gdb-partial-output-buffer)) |
| (funcall handler)))) |
| (t |
| (set-gdb-instance-output-sink instance 'user) |
| (error "Output sink phase error 1."))))) |
| |
| ;; An annotation handler for `starting'. This says that I/O for the subprocess |
| ;; is now the program being debugged, not GDB. |
| (defun gdb-starting (instance ignored) |
| (let ((sink (gdb-instance-output-sink instance))) |
| (cond |
| ((eq sink 'user) |
| (set-gdb-instance-output-sink instance 'inferior) |
| ;; FIXME: need to send queued input |
| ) |
| (t (error "Unexpected `starting' annotation"))))) |
| |
| ;; An annotation handler for `exited' and other annotations which say that |
| ;; I/O for the subprocess is now GDB, not the program being debugged. |
| (defun gdb-stopping (instance ignored) |
| (let ((sink (gdb-instance-output-sink instance))) |
| (cond |
| ((eq sink 'inferior) |
| (set-gdb-instance-output-sink instance 'user) |
| ) |
| (t (error "Unexpected stopping annotation"))))) |
| |
| ;; An annotation handler for `stopped'. It is just like gdb-stopping, except |
| ;; that if we already set the output sink to 'user in gdb-stopping, that is |
| ;; fine. |
| (defun gdb-stopped (instance ignored) |
| (let ((sink (gdb-instance-output-sink instance))) |
| (cond |
| ((eq sink 'inferior) |
| (set-gdb-instance-output-sink instance 'user) |
| ) |
| ((eq sink 'user) |
| t) |
| (t (error "Unexpected stopping annotation"))))) |
| |
| ;; An annotation handler for `post-prompt'. |
| ;; This begins the collection of output from the current |
| ;; command if that happens to be appropriate." |
| (defun gdb-post-prompt (instance ignored) |
| (gdb-invalidate-registers instance ignored) |
| (let ((sink (gdb-instance-output-sink instance))) |
| (cond |
| ((eq sink 'user) t) |
| ((eq sink 'pre-emacs) |
| (set-gdb-instance-output-sink instance 'emacs)) |
| |
| (t |
| (set-gdb-instance-output-sink instance 'user) |
| (error "Output sink phase error 3."))))) |
| |
| ;; Handle a burst of output from a gdb instance. |
| ;; This function is (indirectly) used as a gud-marker-filter. |
| ;; It must return output (if any) to be insterted in the gud |
| ;; buffer. |
| |
| (defun gdb-output-burst (instance string) |
| "Handle a burst of output from a gdb instance. |
| This function is (indirectly) used as a gud-marker-filter. |
| It must return output (if any) to be insterted in the gud |
| buffer." |
| |
| (save-match-data |
| (let ( |
| ;; Recall the left over burst from last time |
| (burst (concat (gdb-instance-burst instance) string)) |
| ;; Start accumulating output for the gud buffer |
| (output "")) |
| |
| ;; Process all the complete markers in this chunk. |
| |
| (while (string-match "\n\032\032\\(.*\\)\n" burst) |
| (let ((annotation (substring burst |
| (match-beginning 1) |
| (match-end 1)))) |
| |
| ;; Stuff prior to the match is just ordinary output. |
| ;; It is either concatenated to OUTPUT or directed |
| ;; elsewhere. |
| (setq output |
| (gdb-concat-output |
| instance |
| output |
| (substring burst 0 (match-beginning 0)))) |
| |
| ;; Take that stuff off the burst. |
| (setq burst (substring burst (match-end 0))) |
| |
| ;; Parse the tag from the annotation, and maybe its arguments. |
| (string-match "\\(\\S-*\\) ?\\(.*\\)" annotation) |
| (let* ((annotation-type (substring annotation |
| (match-beginning 1) |
| (match-end 1))) |
| (annotation-arguments (substring annotation |
| (match-beginning 2) |
| (match-end 2))) |
| (annotation-rule (assoc annotation-type |
| gdb-annotation-rules))) |
| ;; Call the handler for this annotation. |
| (if annotation-rule |
| (funcall (car (cdr annotation-rule)) |
| instance |
| annotation-arguments) |
| ;; Else the annotation is not recognized. Ignore it silently, |
| ;; so that GDB can add new annotations without causing |
| ;; us to blow up. |
| )))) |
| |
| |
| ;; Does the remaining text end in a partial line? |
| ;; If it does, then keep part of the burst until we get more. |
| (if (string-match "\n\\'\\|\n\032\\'\\|\n\032\032.*\\'" |
| burst) |
| (progn |
| ;; Everything before the potential marker start can be output. |
| (setq output |
| (gdb-concat-output |
| instance |
| output |
| (substring burst 0 (match-beginning 0)))) |
| |
| ;; Everything after, we save, to combine with later input. |
| (setq burst (substring burst (match-beginning 0)))) |
| |
| ;; In case we know the burst contains no partial annotations: |
| (progn |
| (setq output (gdb-concat-output instance output burst)) |
| (setq burst ""))) |
| |
| ;; Save the remaining burst for the next call to this function. |
| (set-gdb-instance-burst instance burst) |
| output))) |
| |
| (defun gdb-concat-output (instance so-far new) |
| (let ((sink (gdb-instance-output-sink instance))) |
| (cond |
| ((eq sink 'user) (concat so-far new)) |
| ((or (eq sink 'pre-emacs) (eq sink 'post-emacs)) so-far) |
| ((eq sink 'emacs) |
| (gdb-append-to-partial-output instance new) |
| so-far) |
| ((eq sink 'inferior) |
| (gdb-append-to-inferior-io instance new) |
| so-far) |
| (t (error "Bogon output sink %S" sink))))) |
| |
| (defun gdb-append-to-partial-output (instance string) |
| (save-excursion |
| (set-buffer |
| (gdb-get-create-instance-buffer |
| instance 'gdb-partial-output-buffer)) |
| (goto-char (point-max)) |
| (insert string))) |
| |
| (defun gdb-clear-partial-output (instance) |
| (save-excursion |
| (set-buffer |
| (gdb-get-create-instance-buffer |
| instance 'gdb-partial-output-buffer)) |
| (delete-region (point-min) (point-max)))) |
| |
| (defun gdb-append-to-inferior-io (instance string) |
| (save-excursion |
| (set-buffer |
| (gdb-get-create-instance-buffer |
| instance 'gdb-inferior-io)) |
| (goto-char (point-max)) |
| (insert-before-markers string)) |
| (gud-display-buffer |
| (gdb-get-create-instance-buffer instance |
| 'gdb-inferior-io))) |
| |
| (defun gdb-clear-inferior-io (instance) |
| (save-excursion |
| (set-buffer |
| (gdb-get-create-instance-buffer |
| instance 'gdb-inferior-io)) |
| (delete-region (point-min) (point-max)))) |
| |
| |
| |
| ;; One trick is to have a command who's output is always available in |
| ;; a buffer of it's own, and is always up to date. We build several |
| ;; buffers of this type. |
| ;; |
| ;; There are two aspects to this: gdb has to tell us when the output |
| ;; for that command might have changed, and we have to be able to run |
| ;; the command behind the user's back. |
| ;; |
| ;; The idle input queue and the output phasing associated with |
| ;; the instance variable `(gdb-instance-output-sink instance)' help |
| ;; us to run commands behind the user's back. |
| ;; |
| ;; Below is the code for specificly managing buffers of output from one |
| ;; command. |
| ;; |
| |
| |
| ;; The trigger function is suitable for use in the assoc GDB-ANNOTATION-RULES |
| ;; It adds an idle input for the command we are tracking. It should be the |
| ;; annotation rule binding of whatever gdb sends to tell us this command |
| ;; might have changed it's output. |
| ;; |
| ;; NAME is the fucntion name. DEMAND-PREDICATE tests if output is really needed. |
| ;; GDB-COMMAND is a string of such. OUTPUT-HANDLER is the function bound to the |
| ;; input in the input queue (see comment about ``gdb communications'' above). |
| (defmacro def-gdb-auto-update-trigger (name demand-predicate gdb-command output-handler) |
| (` |
| (defun (, name) (instance &optional ignored) |
| (if (and ((, demand-predicate) instance) |
| (not (member '(, name) |
| (gdb-instance-pending-triggers instance)))) |
| (progn |
| (gdb-instance-enqueue-idle-input |
| instance |
| (list (, gdb-command) '(, output-handler))) |
| (set-gdb-instance-pending-triggers |
| instance |
| (cons '(, name) |
| (gdb-instance-pending-triggers instance)))))))) |
| |
| (defmacro def-gdb-auto-update-handler (name trigger buf-key) |
| (` |
| (defun (, name) () |
| (set-gdb-instance-pending-triggers |
| instance |
| (delq '(, trigger) |
| (gdb-instance-pending-triggers instance))) |
| (let ((buf (gdb-get-instance-buffer instance |
| '(, buf-key)))) |
| (and buf |
| (save-excursion |
| (set-buffer buf) |
| (let ((p (point)) |
| (buffer-read-only nil)) |
| (delete-region (point-min) (point-max)) |
| (insert-buffer (gdb-get-create-instance-buffer |
| instance |
| 'gdb-partial-output-buffer)) |
| (goto-char p)))))))) |
| |
| (defmacro def-gdb-auto-updated-buffer |
| (buffer-key trigger-name gdb-command output-handler-name) |
| (` |
| (progn |
| (def-gdb-auto-update-trigger (, trigger-name) |
| ;; The demand predicate: |
| (lambda (instance) |
| (gdb-get-instance-buffer instance '(, buffer-key))) |
| (, gdb-command) |
| (, output-handler-name)) |
| (def-gdb-auto-update-handler (, output-handler-name) |
| (, trigger-name) (, buffer-key))))) |
| |
| |
| |
| ;; |
| ;; Breakpoint buffers |
| ;; |
| ;; These display the output of `info breakpoints'. |
| ;; |
| |
| |
| (gdb-set-instance-buffer-rules 'gdb-breakpoints-buffer |
| 'gdb-breakpoints-buffer-name |
| 'gud-breakpoints-mode) |
| |
| (def-gdb-auto-updated-buffer gdb-breakpoints-buffer |
| ;; This defines the auto update rule for buffers of type |
| ;; `gdb-breakpoints-buffer'. |
| ;; |
| ;; It defines a function to serve as the annotation handler that |
| ;; handles the `foo-invalidated' message. That function is called: |
| gdb-invalidate-breakpoints |
| |
| ;; To update the buffer, this command is sent to gdb. |
| "server info breakpoints\n" |
| |
| ;; This also defines a function to be the handler for the output |
| ;; from the command above. That function will copy the output into |
| ;; the appropriately typed buffer. That function will be called: |
| gdb-info-breakpoints-handler) |
| |
| (defun gdb-breakpoints-buffer-name (instance) |
| (save-excursion |
| (set-buffer (process-buffer (gdb-instance-process instance))) |
| (concat "*breakpoints of " (gdb-instance-target-string instance) "*"))) |
| |
| (defun gud-display-breakpoints-buffer (instance) |
| (interactive (list (gdb-needed-default-instance))) |
| (gud-display-buffer |
| (gdb-get-create-instance-buffer instance |
| 'gdb-breakpoints-buffer))) |
| |
| (defun gud-frame-breakpoints-buffer (instance) |
| (interactive (list (gdb-needed-default-instance))) |
| (gud-frame-buffer |
| (gdb-get-create-instance-buffer instance |
| 'gdb-breakpoints-buffer))) |
| |
| (defvar gud-breakpoints-mode-map nil) |
| (setq gud-breakpoints-mode-map (make-keymap)) |
| (suppress-keymap gud-breakpoints-mode-map) |
| (define-key gud-breakpoints-mode-map " " 'gud-toggle-bp-this-line) |
| (define-key gud-breakpoints-mode-map "d" 'gud-delete-bp-this-line) |
| |
| (defun gud-breakpoints-mode () |
| "Major mode for gud breakpoints. |
| |
| \\{gud-breakpoints-mode-map}" |
| (setq major-mode 'gud-breakpoints-mode) |
| (setq mode-name "Breakpoints") |
| (use-local-map gud-breakpoints-mode-map) |
| (setq buffer-read-only t) |
| (gdb-invalidate-breakpoints gdb-buffer-instance)) |
| |
| (defun gud-toggle-bp-this-line () |
| (interactive) |
| (save-excursion |
| (beginning-of-line 1) |
| (if (not (looking-at "\\([0-9]*\\)\\s-*\\S-*\\s-*\\S-*\\s-*\\(.\\)")) |
| (error "Not recognized as breakpoint line (demo foo).") |
| (gdb-instance-enqueue-idle-input |
| gdb-buffer-instance |
| (list |
| (concat |
| (if (eq ?y (char-after (match-beginning 2))) |
| "server disable " |
| "server enable ") |
| (buffer-substring (match-beginning 0) |
| (match-end 1)) |
| "\n") |
| '(lambda () nil))) |
| ))) |
| |
| (defun gud-delete-bp-this-line () |
| (interactive) |
| (save-excursion |
| (beginning-of-line 1) |
| (if (not (looking-at "\\([0-9]*\\)\\s-*\\S-*\\s-*\\S-*\\s-*\\(.\\)")) |
| (error "Not recognized as breakpoint line (demo foo).") |
| (gdb-instance-enqueue-idle-input |
| gdb-buffer-instance |
| (list |
| (concat |
| "server delete " |
| (buffer-substring (match-beginning 0) |
| (match-end 1)) |
| "\n") |
| '(lambda () nil))) |
| ))) |
| |
| |
| |
| |
| ;; |
| ;; Frames buffers. These display a perpetually correct bactracktrace |
| ;; (from the command `where'). |
| ;; |
| ;; Alas, if your stack is deep, they are costly. |
| ;; |
| |
| (gdb-set-instance-buffer-rules 'gdb-stack-buffer |
| 'gdb-stack-buffer-name |
| 'gud-frames-mode) |
| |
| (def-gdb-auto-updated-buffer gdb-stack-buffer |
| gdb-invalidate-frames |
| "server where\n" |
| gdb-info-frames-handler) |
| |
| (defun gdb-stack-buffer-name (instance) |
| (save-excursion |
| (set-buffer (process-buffer (gdb-instance-process instance))) |
| (concat "*stack frames of " |
| (gdb-instance-target-string instance) "*"))) |
| |
| (defun gud-display-stack-buffer (instance) |
| (interactive (list (gdb-needed-default-instance))) |
| (gud-display-buffer |
| (gdb-get-create-instance-buffer instance |
| 'gdb-stack-buffer))) |
| |
| (defun gud-frame-stack-buffer (instance) |
| (interactive (list (gdb-needed-default-instance))) |
| (gud-frame-buffer |
| (gdb-get-create-instance-buffer instance |
| 'gdb-stack-buffer))) |
| |
| (defvar gud-frames-mode-map nil) |
| (setq gud-frames-mode-map (make-keymap)) |
| (suppress-keymap gud-frames-mode-map) |
| (define-key gud-frames-mode-map [mouse-2] |
| 'gud-frames-select-by-mouse) |
| |
| (defun gud-frames-mode () |
| "Major mode for gud frames. |
| |
| \\{gud-frames-mode-map}" |
| (setq major-mode 'gud-frames-mode) |
| (setq mode-name "Frames") |
| (setq buffer-read-only t) |
| (use-local-map gud-frames-mode-map) |
| (gdb-invalidate-frames gdb-buffer-instance)) |
| |
| (defun gud-get-frame-number () |
| (save-excursion |
| (let* ((pos (re-search-backward "^#\\([0-9]*\\)" nil t)) |
| (n (or (and pos |
| (string-to-int |
| (buffer-substring (match-beginning 1) |
| (match-end 1)))) |
| 0))) |
| n))) |
| |
| (defun gud-frames-select-by-mouse (e) |
| (interactive "e") |
| (let (selection) |
| (save-excursion |
| (set-buffer (window-buffer (posn-window (event-end e)))) |
| (save-excursion |
| (goto-char (posn-point (event-end e))) |
| (setq selection (gud-get-frame-number)))) |
| (select-window (posn-window (event-end e))) |
| (save-excursion |
| (set-buffer (gdb-get-instance-buffer (gdb-needed-default-instance) 'gud)) |
| (gud-call "fr %p" selection) |
| (gud-display-frame)))) |
| |
| |
| ;; |
| ;; Registers buffers |
| ;; |
| |
| (def-gdb-auto-updated-buffer gdb-registers-buffer |
| gdb-invalidate-registers |
| "server info registers\n" |
| gdb-info-registers-handler) |
| |
| (gdb-set-instance-buffer-rules 'gdb-registers-buffer |
| 'gdb-registers-buffer-name |
| 'gud-registers-mode) |
| |
| (defvar gud-registers-mode-map nil) |
| (setq gud-registers-mode-map (make-keymap)) |
| (suppress-keymap gud-registers-mode-map) |
| |
| (defun gud-registers-mode () |
| "Major mode for gud registers. |
| |
| \\{gud-registers-mode-map}" |
| (setq major-mode 'gud-registers-mode) |
| (setq mode-name "Registers") |
| (setq buffer-read-only t) |
| (use-local-map gud-registers-mode-map) |
| (gdb-invalidate-registers gdb-buffer-instance)) |
| |
| (defun gdb-registers-buffer-name (instance) |
| (save-excursion |
| (set-buffer (process-buffer (gdb-instance-process instance))) |
| (concat "*registers of " (gdb-instance-target-string instance) "*"))) |
| |
| (defun gud-display-registers-buffer (instance) |
| (interactive (list (gdb-needed-default-instance))) |
| (gud-display-buffer |
| (gdb-get-create-instance-buffer instance |
| 'gdb-registers-buffer))) |
| |
| (defun gud-frame-registers-buffer (instance) |
| (interactive (list (gdb-needed-default-instance))) |
| (gud-frame-buffer |
| (gdb-get-create-instance-buffer instance |
| 'gdb-registers-buffer))) |
| |
| |
| |
| ;;;; Menu windows: |
| |
| |
| ;; MENU-LIST is ((option option option...) (option option ...)...) |
| ;; |
| (defun gud-display-menu (menu-list) |
| (setq fill-column (min 120 (- (window-width) |
| (min 8 (window-width))))) |
| (while menu-list |
| (mapcar (function (lambda (x) (insert (symbol-name x) " "))) (car menu-list)) |
| (fill-paragraph nil) |
| (insert "\n\n") |
| (setq menu-list (cdr menu-list))) |
| (goto-char (point-min)) |
| (while (re-search-forward "\\([^ \n]+\\)\\(\n\\| \\)" nil t) |
| (put-text-property (match-beginning 1) (match-end 1) |
| 'mouse-face 'highlight)) |
| (goto-char (point-min))) |
| |
| (defun gud-goto-menu (menu) |
| (setq gud-menu-position menu) |
| (let ((buffer-read-only nil)) |
| (delete-region (point-min) (point-max)) |
| (gud-display-menu menu))) |
| |
| (defun gud-menu-pick (event) |
| "Choose an item from a gdb command menu." |
| (interactive "e") |
| (let (choice) |
| (save-excursion |
| (set-buffer (window-buffer (posn-window (event-start event)))) |
| (goto-char (posn-point (event-start event))) |
| (let (beg end) |
| (skip-chars-forward "^ \t\n") |
| (setq end (point)) |
| (skip-chars-backward "^ \t\n") |
| (setq beg (point)) |
| (setq choice (buffer-substring beg end)) |
| (message choice) |
| (gud-invoke-menu (intern choice)))))) |
| |
| (defun gud-invoke-menu (symbol) |
| (let ((meaning (assoc symbol gud-menu-rules))) |
| (cond |
| ((and (consp meaning) |
| (consp (car (cdr meaning)))) |
| (gud-goto-menu (car (cdr meaning)))) |
| (meaning (call-interactively (car (cdr meaning))))))) |
| |
| |
| |
| (gdb-set-instance-buffer-rules 'gdb-command-buffer |
| 'gdb-command-buffer-name |
| 'gud-command-mode) |
| |
| (defvar gud-command-mode-map nil) |
| (setq gud-command-mode-map (make-keymap)) |
| (suppress-keymap gud-command-mode-map) |
| (define-key gud-command-mode-map [mouse-2] 'gud-menu-pick) |
| |
| (defun gud-command-mode () |
| "Major mode for gud menu. |
| |
| \\{gud-command-mode-map}" (interactive) (setq major-mode 'gud-command-mode) |
| (setq mode-name "Menu") (setq buffer-read-only t) (use-local-map |
| gud-command-mode-map) (make-variable-buffer-local 'gud-menu-position) |
| (if (not gud-menu-position) (gud-goto-menu gud-running-menu))) |
| |
| (defun gdb-command-buffer-name (instance) |
| (save-excursion |
| (set-buffer (process-buffer (gdb-instance-process instance))) |
| (concat "*menu of " (gdb-instance-target-string instance) "*"))) |
| |
| (defun gud-display-command-buffer (instance) |
| (interactive (list (gdb-needed-default-instance))) |
| (gud-display-buffer |
| (gdb-get-create-instance-buffer instance |
| 'gdb-command-buffer) |
| 6)) |
| |
| (defun gud-frame-command-buffer (instance) |
| (interactive (list (gdb-needed-default-instance))) |
| (gud-frame-buffer |
| (gdb-get-create-instance-buffer instance |
| 'gdb-command-buffer))) |
| |
| (defvar gud-selected-menu-titles ()) |
| (setq gud-selected-menu-titles |
| '(RUNNING STACK DATA BREAKPOINTS FILES)) |
| |
| (setq gud-running-menu |
| (list |
| '(RUNNING stack breakpoints files) |
| '(target run next step continue finish stepi kill help-running))) |
| |
| (setq gud-stack-menu |
| (list |
| '(running STACK breakpoints files) |
| '(up down frame backtrace return help-stack))) |
| |
| (setq gud-data-menu |
| (list |
| '(running stack DATA breakpoints files) |
| '(whatis ptype print set display undisplay disassemble help-data))) |
| |
| (setq gud-breakpoints-menu |
| (list |
| '(running stack BREAKPOINTS files) |
| '(awatch rwatch watch break delete enable disable condition ignore help-breakpoints))) |
| |
| (setq gud-files-menu |
| (list |
| '(running stack breakpoints FILES) |
| '(file core-file help-files) |
| '(exec-file load symbol-file add-symbol-file sharedlibrary))) |
| |
| (setq gud-menu-rules |
| (list |
| (list 'running gud-running-menu) |
| (list 'RUNNING gud-running-menu) |
| (list 'stack gud-stack-menu) |
| (list 'STACK gud-stack-menu) |
| (list 'data gud-data-menu) |
| (list 'DATA gud-data-menu) |
| (list 'breakpoints gud-breakpoints-menu) |
| (list 'BREAKPOINTS gud-breakpoints-menu) |
| (list 'files gud-files-menu) |
| (list 'FILES gud-files-menu) |
| |
| (list 'target 'gud-target) |
| (list 'kill 'gud-kill) |
| (list 'stepi 'gud-stepi) |
| (list 'step 'gud-step) |
| (list 'next 'gud-next) |
| (list 'finish 'gud-finish) |
| (list 'continue 'gud-cont) |
| (list 'run 'gud-run) |
| |
| (list 'backtrace 'gud-backtrace) |
| (list 'frame 'gud-frame) |
| (list 'down 'gud-down) |
| (list 'up 'gud-up) |
| (list 'return 'gud-return) |
| |
| (list 'file 'gud-file) |
| (list 'core-file 'gud-core-file) |
| (list 'cd 'gud-cd) |
| |
| (list 'exec-file 'gud-exec-file) |
| (list 'load 'gud-load) |
| (list 'symbol-file 'gud-symbol-file) |
| (list 'add-symbol-file 'gud-add-symbol-file) |
| (list 'sharedlibrary 'gud-sharedlibrary) |
| )) |
| |
| |
| |
| |
| (defun gdb-call-showing-gud (instance command) |
| (gud-display-gud-buffer instance) |
| (comint-input-sender (gdb-instance-process instance) command)) |
| |
| (defvar gud-target-history ()) |
| |
| (defun gud-temp-buffer-show (buf) |
| (let ((ow (selected-window))) |
| (unwind-protect |
| (progn |
| (pop-to-buffer buf) |
| |
| ;; This insertion works around a bug in emacs. |
| ;; The bug is that all the empty space after a |
| ;; highlighted word that terminates a buffer |
| ;; gets highlighted. That's really ugly, so |
| ;; make sure a highlighted word can't ever |
| ;; terminate the buffer. |
| (goto-char (point-max)) |
| (insert "\n") |
| (goto-char (point-min)) |
| |
| (if (< (window-height) 10) |
| (enlarge-window (- 10 (window-height))))) |
| (select-window ow)))) |
| |
| (defun gud-target (instance command) |
| (interactive |
| (let* ((instance (gdb-needed-default-instance)) |
| (temp-buffer-show-function (function gud-temp-buffer-show)) |
| (target-name (completing-read (format "Target type: ") |
| '(("remote") |
| ("core") |
| ("child") |
| ("exec")) |
| nil |
| t |
| nil |
| 'gud-target-history))) |
| (list instance |
| (cond |
| ((equal target-name "child") "run") |
| |
| ((equal target-name "core") |
| (concat "target core " |
| (read-file-name "core file: " |
| nil |
| "core" |
| t))) |
| |
| ((equal target-name "exec") |
| (concat "target exec " |
| (read-file-name "exec file: " |
| nil |
| "a.out" |
| t))) |
| |
| ((equal target-name "remote") |
| (concat "target remote " |
| (read-file-name "serial line for remote: " |
| "/dev/" |
| "ttya" |
| t))) |
| |
| (t "echo No such target command!"))))) |
| |
| (gud-display-gud-buffer instance) |
| (apply comint-input-sender |
| (list (gdb-instance-process instance) command))) |
| |
| (defun gud-backtrace () |
| (interactive) |
| (let ((instance (gdb-needed-default-instance))) |
| (gud-display-gud-buffer instance) |
| (apply comint-input-sender |
| (list (gdb-instance-process instance) |
| "backtrace")))) |
| |
| (defun gud-frame () |
| (interactive) |
| (let ((instance (gdb-needed-default-instance))) |
| (apply comint-input-sender |
| (list (gdb-instance-process instance) |
| "frame")))) |
| |
| (defun gud-return (instance command) |
| (interactive |
| (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| (list (gdb-needed-default-instance) |
| (concat "return " (read-string "Expression to return: "))))) |
| (gud-display-gud-buffer instance) |
| (apply comint-input-sender |
| (list (gdb-instance-process instance) command))) |
| |
| |
| (defun gud-file (instance command) |
| (interactive |
| (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| (list (gdb-needed-default-instance) |
| (concat "file " (read-file-name "Executable to debug: " |
| nil |
| "a.out" |
| t))))) |
| (gud-display-gud-buffer instance) |
| (apply comint-input-sender |
| (list (gdb-instance-process instance) command))) |
| |
| (defun gud-core-file (instance command) |
| (interactive |
| (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| (list (gdb-needed-default-instance) |
| (concat "core " (read-file-name "Core file to debug: " |
| nil |
| "core-file" |
| t))))) |
| (gud-display-gud-buffer instance) |
| (apply comint-input-sender |
| (list (gdb-instance-process instance) command))) |
| |
| (defun gud-cd (dir) |
| (interactive "FChange GDB's default directory: ") |
| (let ((instance (gdb-needed-default-instance))) |
| (save-excursion |
| (set-buffer (gdb-get-instance-buffer instance 'gud)) |
| (cd dir)) |
| (gud-display-gud-buffer instance) |
| (apply comint-input-sender |
| (list (gdb-instance-process instance) |
| (concat "cd " dir))))) |
| |
| |
| (defun gud-exec-file (instance command) |
| (interactive |
| (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| (list (gdb-needed-default-instance) |
| (concat "exec-file " (read-file-name "Init memory from executable: " |
| nil |
| "a.out" |
| t))))) |
| (gud-display-gud-buffer instance) |
| (apply comint-input-sender |
| (list (gdb-instance-process instance) command))) |
| |
| (defun gud-load (instance command) |
| (interactive |
| (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| (list (gdb-needed-default-instance) |
| (concat "load " (read-file-name "Dynamicly load from file: " |
| nil |
| "a.out" |
| t))))) |
| (gud-display-gud-buffer instance) |
| (apply comint-input-sender |
| (list (gdb-instance-process instance) command))) |
| |
| (defun gud-symbol-file (instance command) |
| (interactive |
| (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| (list (gdb-needed-default-instance) |
| (concat "symbol-file " (read-file-name "Read symbol table from file: " |
| nil |
| "a.out" |
| t))))) |
| (gud-display-gud-buffer instance) |
| (apply comint-input-sender |
| (list (gdb-instance-process instance) command))) |
| |
| |
| (defun gud-add-symbol-file (instance command) |
| (interactive |
| (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| (list (gdb-needed-default-instance) |
| (concat "add-symbol-file " |
| (read-file-name "Add symbols from file: " |
| nil |
| "a.out" |
| t))))) |
| (gud-display-gud-buffer instance) |
| (apply comint-input-sender |
| (list (gdb-instance-process instance) command))) |
| |
| |
| (defun gud-sharedlibrary (instance command) |
| (interactive |
| (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| (list (gdb-needed-default-instance) |
| (concat "sharedlibrary " |
| (read-string "Load symbols for files matching regexp: "))))) |
| (gud-display-gud-buffer instance) |
| (apply comint-input-sender |
| (list (gdb-instance-process instance) command))) |
| |
| |
| |
| |
| |
| ;;;; Window management |
| |
| |
| ;;; FIXME: This should only return true for buffers in the current instance |
| (defun gud-protected-buffer-p (buffer) |
| "Is BUFFER a buffer which we want to leave displayed?" |
| (save-excursion |
| (set-buffer buffer) |
| (or gdb-buffer-type |
| overlay-arrow-position))) |
| |
| ;;; The way we abuse the dedicated-p flag is pretty gross, but seems |
| ;;; to do the right thing. Seeing as there is no way for Lisp code to |
| ;;; get at the use_time field of a window, I'm not sure there exists a |
| ;;; more elegant solution without writing C code. |
| |
| (defun gud-display-buffer (buf &optional size) |
| (let ((must-split nil) |
| (answer nil)) |
| (unwind-protect |
| (progn |
| (walk-windows |
| '(lambda (win) |
| (if (gud-protected-buffer-p (window-buffer win)) |
| (set-window-dedicated-p win t)))) |
| (setq answer (get-buffer-window buf)) |
| (if (not answer) |
| (let ((window (get-lru-window))) |
| (if window |
| (progn |
| (set-window-buffer window buf) |
| (setq answer window)) |
| (setq must-split t))))) |
| (walk-windows |
| '(lambda (win) |
| (if (gud-protected-buffer-p (window-buffer win)) |
| (set-window-dedicated-p win nil))))) |
| (if must-split |
| (let* ((largest (get-largest-window)) |
| (cur-size (window-height largest)) |
| (new-size (and size (< size cur-size) (- cur-size size)))) |
| (setq answer (split-window largest new-size)) |
| (set-window-buffer answer buf))) |
| answer)) |
| |
| (defun existing-source-window (buffer) |
| (catch 'found |
| (save-excursion |
| (walk-windows |
| (function |
| (lambda (win) |
| (if (and overlay-arrow-position |
| (eq (window-buffer win) |
| (marker-buffer overlay-arrow-position))) |
| (progn |
| (set-window-buffer win buffer) |
| (throw 'found win)))))) |
| nil))) |
| |
| (defun gud-display-source-buffer (buffer) |
| (or (existing-source-window buffer) |
| (gud-display-buffer buffer))) |
| |
| (defun gud-frame-buffer (buf) |
| (save-excursion |
| (set-buffer buf) |
| (make-frame))) |
| |
| |
| |
| ;;; Shared keymap initialization: |
| |
| (defun make-windows-menu (map) |
| (define-key map [menu-bar displays] |
| (cons "GDB-Windows" (make-sparse-keymap "GDB-Windows"))) |
| (define-key map [menu-bar displays gdb] |
| '("Gdb" . gud-display-gud-buffer)) |
| (define-key map [menu-bar displays registers] |
| '("Registers" . gud-display-registers-buffer)) |
| (define-key map [menu-bar displays frames] |
| '("Stack" . gud-display-stack-buffer)) |
| (define-key map [menu-bar displays breakpoints] |
| '("Breakpoints" . gud-display-breakpoints-buffer)) |
| (define-key map [menu-bar displays commands] |
| '("Commands" . gud-display-command-buffer))) |
| |
| (defun gud-display-gud-buffer (instance) |
| (interactive (list (gdb-needed-default-instance))) |
| (gud-display-buffer |
| (gdb-get-create-instance-buffer instance 'gud))) |
| |
| (make-windows-menu gud-breakpoints-mode-map) |
| (make-windows-menu gud-frames-mode-map) |
| (make-windows-menu gud-registers-mode-map) |
| |
| |
| |
| (defun make-frames-menu (map) |
| (define-key map [menu-bar frames] |
| (cons "GDB-Frames" (make-sparse-keymap "GDB-Frames"))) |
| (define-key map [menu-bar frames gdb] |
| '("Gdb" . gud-frame-gud-buffer)) |
| (define-key map [menu-bar frames registers] |
| '("Registers" . gud-frame-registers-buffer)) |
| (define-key map [menu-bar frames frames] |
| '("Stack" . gud-frame-stack-buffer)) |
| (define-key map [menu-bar frames breakpoints] |
| '("Breakpoints" . gud-frame-breakpoints-buffer)) |
| (define-key map [menu-bar displays commands] |
| '("Commands" . gud-display-command-buffer))) |
| |
| (defun gud-frame-gud-buffer (instance) |
| (interactive (list (gdb-needed-default-instance))) |
| (gud-frame-buffer |
| (gdb-get-create-instance-buffer instance 'gud))) |
| |
| (make-frames-menu gud-breakpoints-mode-map) |
| (make-frames-menu gud-frames-mode-map) |
| (make-frames-menu gud-registers-mode-map) |
| |
| |
| (defun gud-gdb-find-file (f) |
| (find-file-noselect f)) |
| |
| ;;;###autoload |
| (defun gdb (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." |
| (interactive |
| (list (read-from-minibuffer "Run gdb (like this): " |
| (if (consp gud-gdb-history) |
| (car gud-gdb-history) |
| "gdb ") |
| nil nil |
| '(gud-gdb-history . 1)))) |
| (gud-overload-functions |
| '((gud-massage-args . gud-gdb-massage-args) |
| (gud-marker-filter . gud-gdb-marker-filter) |
| (gud-find-file . gud-gdb-find-file) |
| )) |
| |
| (let* ((words (gud-chop-words command-line)) |
| (program (car words)) |
| (file-word (let ((w (cdr words))) |
| (while (and w (= ?- (aref (car w) 0))) |
| (setq w (cdr w))) |
| (car w))) |
| (args (delq file-word (cdr words))) |
| (file (expand-file-name file-word)) |
| (filepart (file-name-nondirectory file)) |
| (buffer-name (concat "*gud-" filepart "*"))) |
| (setq gdb-first-time (not (get-buffer-process buffer-name)))) |
| |
| (gud-common-init command-line) |
| |
| (gud-def gud-break "break %f:%l" "\C-b" "Set breakpoint at current line.") |
| (gud-def gud-tbreak "tbreak %f:%l" "\C-t" "Set breakpoint at current line.") |
| (gud-def gud-remove "clear %l" "\C-d" "Remove breakpoint at current line") |
| (gud-def gud-kill "kill" nil "Kill the program.") |
| (gud-def gud-run "run" nil "Run the program.") |
| (gud-def gud-stepi "stepi %p" "\C-i" "Step one instruction with display.") |
| (gud-def gud-step "step %p" "\C-s" "Step one source line with display.") |
| (gud-def gud-next "next %p" "\C-n" "Step one line (skip functions).") |
| (gud-def gud-finish "finish" "\C-f" "Finish executing current function.") |
| (gud-def gud-cont "cont" "\C-r" "Continue with display.") |
| (gud-def gud-up "up %p" "<" "Up N stack frames (numeric arg).") |
| (gud-def gud-down "down %p" ">" "Down N stack frames (numeric arg).") |
| (gud-def gud-print "print %e" "\C-p" "Evaluate C expression at point.") |
| |
| (setq comint-prompt-regexp "^(.*gdb[+]?) *") |
| (setq comint-input-sender 'gdb-send) |
| (run-hooks 'gdb-mode-hook) |
| (let ((instance |
| (make-gdb-instance (get-buffer-process (current-buffer))) |
| )) |
| (if gdb-first-time (gdb-clear-inferior-io instance))) |
| ) |
| |
| |
| ;; ====================================================================== |
| ;; sdb functions |
| |
| ;;; History of argument lists passed to sdb. |
| (defvar gud-sdb-history nil) |
| |
| (defvar gud-sdb-needs-tags (not (file-exists-p "/var")) |
| "If nil, we're on a System V Release 4 and don't need the tags hack.") |
| |
| (defvar gud-sdb-lastfile nil) |
| |
| (defun gud-sdb-massage-args (file args) |
| (cons file args)) |
| |
| (defun gud-sdb-marker-filter (string) |
| (cond |
| ;; System V Release 3.2 uses this format |
| ((string-match "\\(^0x\\w* in \\|^\\|\n\\)\\([^:\n]*\\):\\([0-9]*\\):.*\n" |
| string) |
| (setq gud-last-frame |
| (cons |
| (substring string (match-beginning 2) (match-end 2)) |
| (string-to-int |
| (substring string (match-beginning 3) (match-end 3)))))) |
| ;; System V Release 4.0 |
| ((string-match "^\\(BREAKPOINT\\|STEPPED\\) process [0-9]+ function [^ ]+ in \\(.+\\)\n" |
| string) |
| (setq gud-sdb-lastfile |
| (substring string (match-beginning 2) (match-end 2)))) |
| ((and gud-sdb-lastfile (string-match "^\\([0-9]+\\):" string)) |
| (setq gud-last-frame |
| (cons |
| gud-sdb-lastfile |
| (string-to-int |
| (substring string (match-beginning 1) (match-end 1)))))) |
| (t |
| (setq gud-sdb-lastfile nil))) |
| string) |
| |
| (defun gud-sdb-find-file (f) |
| (if gud-sdb-needs-tags |
| (find-tag-noselect f) |
| (find-file-noselect f))) |
| |
| ;;;###autoload |
| (defun sdb (command-line) |
| "Run sdb on program FILE in buffer *gud-FILE*. |
| The directory containing FILE becomes the initial working directory |
| and source-file directory for your debugger." |
| (interactive |
| (list (read-from-minibuffer "Run sdb (like this): " |
| (if (consp gud-sdb-history) |
| (car gud-sdb-history) |
| "sdb ") |
| nil nil |
| '(gud-sdb-history . 1)))) |
| (if (and gud-sdb-needs-tags |
| (not (and (boundp 'tags-file-name) (file-exists-p tags-file-name)))) |
| (error "The sdb support requires a valid tags table to work.")) |
| (gud-overload-functions '((gud-massage-args . gud-sdb-massage-args) |
| (gud-marker-filter . gud-sdb-marker-filter) |
| (gud-find-file . gud-sdb-find-file) |
| )) |
| |
| (gud-common-init command-line) |
| |
| (gud-def gud-break "%l b" "\C-b" "Set breakpoint at current line.") |
| (gud-def gud-tbreak "%l c" "\C-t" "Set temporary breakpoint at current line.") |
| (gud-def gud-remove "%l d" "\C-d" "Remove breakpoint at current line") |
| (gud-def gud-step "s %p" "\C-s" "Step one source line with display.") |
| (gud-def gud-stepi "i %p" "\C-i" "Step one instruction with display.") |
| (gud-def gud-next "S %p" "\C-n" "Step one line (skip functions).") |
| (gud-def gud-cont "c" "\C-r" "Continue with display.") |
| (gud-def gud-print "%e/" "\C-p" "Evaluate C expression at point.") |
| |
| (setq comint-prompt-regexp "\\(^\\|\n\\)\\*") |
| (run-hooks 'sdb-mode-hook) |
| ) |
| |
| ;; ====================================================================== |
| ;; dbx functions |
| |
| ;;; History of argument lists passed to dbx. |
| (defvar gud-dbx-history nil) |
| |
| (defun gud-dbx-massage-args (file args) |
| (cons file args)) |
| |
| (defun gud-dbx-marker-filter (string) |
| (if (or (string-match |
| "stopped in .* at line \\([0-9]*\\) in file \"\\([^\"]*\\)\"" |
| string) |
| (string-match |
| "signal .* in .* at line \\([0-9]*\\) in file \"\\([^\"]*\\)\"" |
| string)) |
| (setq gud-last-frame |
| (cons |
| (substring string (match-beginning 2) (match-end 2)) |
| (string-to-int |
| (substring string (match-beginning 1) (match-end 1)))))) |
| string) |
| |
| (defun gud-dbx-find-file (f) |
| (find-file-noselect f)) |
| |
| ;;;###autoload |
| (defun dbx (command-line) |
| "Run dbx on program FILE in buffer *gud-FILE*. |
| The directory containing FILE becomes the initial working directory |
| and source-file directory for your debugger." |
| (interactive |
| (list (read-from-minibuffer "Run dbx (like this): " |
| (if (consp gud-dbx-history) |
| (car gud-dbx-history) |
| "dbx ") |
| nil nil |
| '(gud-dbx-history . 1)))) |
| (gud-overload-functions '((gud-massage-args . gud-dbx-massage-args) |
| (gud-marker-filter . gud-dbx-marker-filter) |
| (gud-find-file . gud-dbx-find-file) |
| )) |
| |
| (gud-common-init command-line) |
| |
| (gud-def gud-break "file \"%d%f\"\nstop at %l" |
| "\C-b" "Set breakpoint at current line.") |
| ;; (gud-def gud-break "stop at \"%f\":%l" |
| ;; "\C-b" "Set breakpoint at current line.") |
| (gud-def gud-remove "clear %l" "\C-d" "Remove breakpoint at current line") |
| (gud-def gud-step "step %p" "\C-s" "Step one line with display.") |
| (gud-def gud-stepi "stepi %p" "\C-i" "Step one instruction with display.") |
| (gud-def gud-next "next %p" "\C-n" "Step one line (skip functions).") |
| (gud-def gud-cont "cont" "\C-r" "Continue with display.") |
| (gud-def gud-up "up %p" "<" "Up (numeric arg) stack frames.") |
| (gud-def gud-down "down %p" ">" "Down (numeric arg) stack frames.") |
| (gud-def gud-print "print %e" "\C-p" "Evaluate C expression at point.") |
| |
| (setq comint-prompt-regexp "^[^)]*dbx) *") |
| (run-hooks 'dbx-mode-hook) |
| ) |
| |
| ;; ====================================================================== |
| ;; xdb (HP PARISC debugger) functions |
| |
| ;;; History of argument lists passed to xdb. |
| (defvar gud-xdb-history nil) |
| |
| (defvar gud-xdb-directories nil |
| "*A list of directories that xdb should search for source code. |
| If nil, only source files in the program directory |
| will be known to xdb. |
| |
| The file names should be absolute, or relative to the directory |
| containing the executable being debugged.") |
| |
| (defun gud-xdb-massage-args (file args) |
| (nconc (let ((directories gud-xdb-directories) |
| (result nil)) |
| (while directories |
| (setq result (cons (car directories) (cons "-d" result))) |
| (setq directories (cdr directories))) |
| (nreverse (cons file result))) |
| args)) |
| |
| (defun gud-xdb-file-name (f) |
| "Transform a relative pathname to a full pathname in xdb mode" |
| (let ((result nil)) |
| (if (file-exists-p f) |
| (setq result (expand-file-name f)) |
| (let ((directories gud-xdb-directories)) |
| (while directories |
| (let ((path (concat (car directories) "/" f))) |
| (if (file-exists-p path) |
| (setq result (expand-file-name path) |
| directories nil))) |
| (setq directories (cdr directories))))) |
| result)) |
| |
| ;; xdb does not print the lines all at once, so we have to accumulate them |
| (defvar gud-xdb-accumulation "") |
| |
| (defun gud-xdb-marker-filter (string) |
| (let (result) |
| (if (or (string-match comint-prompt-regexp string) |
| (string-match ".*\012" string)) |
| (setq result (concat gud-xdb-accumulation string) |
| gud-xdb-accumulation "") |
| (setq gud-xdb-accumulation (concat gud-xdb-accumulation string))) |
| (if result |
| (if (or (string-match "\\([^\n \t:]+\\): [^:]+: \\([0-9]+\\):" result) |
| (string-match "[^: \t]+:[ \t]+\\([^:]+\\): [^:]+: \\([0-9]+\\):" |
| result)) |
| (let ((line (string-to-int |
| (substring result (match-beginning 2) (match-end 2)))) |
| (file (gud-xdb-file-name |
| (substring result (match-beginning 1) (match-end 1))))) |
| (if file |
| (setq gud-last-frame (cons file line)))))) |
| (or result ""))) |
| |
| (defun gud-xdb-find-file (f) |
| (let ((realf (gud-xdb-file-name f))) |
| (if realf (find-file-noselect realf)))) |
| |
| ;;;###autoload |
| (defun xdb (command-line) |
| "Run xdb on program FILE in buffer *gud-FILE*. |
| The directory containing FILE becomes the initial working directory |
| and source-file directory for your debugger. |
| |
| You can set the variable 'gud-xdb-directories' to a list of program source |
| directories if your program contains sources from more than one directory." |
| (interactive |
| (list (read-from-minibuffer "Run xdb (like this): " |
| (if (consp gud-xdb-history) |
| (car gud-xdb-history) |
| "xdb ") |
| nil nil |
| '(gud-xdb-history . 1)))) |
| (gud-overload-functions '((gud-massage-args . gud-xdb-massage-args) |
| (gud-marker-filter . gud-xdb-marker-filter) |
| (gud-find-file . gud-xdb-find-file))) |
| |
| (gud-common-init command-line) |
| |
| (gud-def gud-break "b %f:%l" "\C-b" "Set breakpoint at current line.") |
| (gud-def gud-tbreak "b %f:%l\\t" "\C-t" |
| "Set temporary breakpoint at current line.") |
| (gud-def gud-remove "db" "\C-d" "Remove breakpoint at current line") |
| (gud-def gud-step "s %p" "\C-s" "Step one line with display.") |
| (gud-def gud-next "S %p" "\C-n" "Step one line (skip functions).") |
| (gud-def gud-cont "c" "\C-r" "Continue with display.") |
| (gud-def gud-up "up %p" "<" "Up (numeric arg) stack frames.") |
| (gud-def gud-down "down %p" ">" "Down (numeric arg) stack frames.") |
| (gud-def gud-finish "bu\\t" "\C-f" "Finish executing current function.") |
| (gud-def gud-print "p %e" "\C-p" "Evaluate C expression at point.") |
| |
| (setq comint-prompt-regexp "^>") |
| (make-local-variable 'gud-xdb-accumulation) |
| (setq gud-xdb-accumulation "") |
| (run-hooks 'xdb-mode-hook)) |
| |
| ;; ====================================================================== |
| ;; perldb functions |
| |
| ;;; History of argument lists passed to perldb. |
| (defvar gud-perldb-history nil) |
| |
| (defun gud-perldb-massage-args (file args) |
| (cons "-d" (cons file (cons "-emacs" args)))) |
| |
| ;; There's no guarantee that Emacs will hand the filter the entire |
| ;; marker at once; it could be broken up across several strings. We |
| ;; might even receive a big chunk with several markers in it. If we |
| ;; receive a chunk of text which looks like it might contain the |
| ;; beginning of a marker, we save it here between calls to the |
| ;; filter. |
| (defvar gud-perldb-marker-acc "") |
| |
| (defun gud-perldb-marker-filter (string) |
| (save-match-data |
| (setq gud-perldb-marker-acc (concat gud-perldb-marker-acc string)) |
| (let ((output "")) |
| |
| ;; Process all the complete markers in this chunk. |
| (while (string-match "^\032\032\\([^:\n]*\\):\\([0-9]*\\):.*\n" |
| gud-perldb-marker-acc) |
| (setq |
| |
| ;; Extract the frame position from the marker. |
| gud-last-frame |
| (cons (substring gud-perldb-marker-acc (match-beginning 1) (match-end 1)) |
| (string-to-int (substring gud-perldb-marker-acc |
| (match-beginning 2) |
| (match-end 2)))) |
| |
| ;; Append any text before the marker to the output we're going |
| ;; to return - we don't include the marker in this text. |
| output (concat output |
| (substring gud-perldb-marker-acc 0 (match-beginning 0))) |
| |
| ;; Set the accumulator to the remaining text. |
| gud-perldb-marker-acc (substring gud-perldb-marker-acc (match-end 0)))) |
| |
| ;; Does the remaining text look like it might end with the |
| ;; beginning of another marker? If it does, then keep it in |
| ;; gud-perldb-marker-acc until we receive the rest of it. Since we |
| ;; know the full marker regexp above failed, it's pretty simple to |
| ;; test for marker starts. |
| (if (string-match "^\032.*\\'" gud-perldb-marker-acc) |
| (progn |
| ;; Everything before the potential marker start can be output. |
| (setq output (concat output (substring gud-perldb-marker-acc |
| 0 (match-beginning 0)))) |
| |
| ;; Everything after, we save, to combine with later input. |
| (setq gud-perldb-marker-acc |
| (substring gud-perldb-marker-acc (match-beginning 0)))) |
| |
| (setq output (concat output gud-perldb-marker-acc) |
| gud-perldb-marker-acc "")) |
| |
| output))) |
| |
| (defun gud-perldb-find-file (f) |
| (find-file-noselect f)) |
| |
| ;;;###autoload |
| (defun perldb (command-line) |
| "Run perldb on program FILE in buffer *gud-FILE*. |
| The directory containing FILE becomes the initial working directory |
| and source-file directory for your debugger." |
| (interactive |
| (list (read-from-minibuffer "Run perldb (like this): " |
| (if (consp gud-perldb-history) |
| (car gud-perldb-history) |
| "perl ") |
| nil nil |
| '(gud-perldb-history . 1)))) |
| (gud-overload-functions '((gud-massage-args . gud-perldb-massage-args) |
| (gud-marker-filter . gud-perldb-marker-filter) |
| (gud-find-file . gud-perldb-find-file) |
| )) |
| |
| (gud-common-init command-line) |
| |
| (gud-def gud-break "b %l" "\C-b" "Set breakpoint at current line.") |
| (gud-def gud-remove "d %l" "\C-d" "Remove breakpoint at current line") |
| (gud-def gud-step "s" "\C-s" "Step one source line with display.") |
| (gud-def gud-next "n" "\C-n" "Step one line (skip functions).") |
| (gud-def gud-cont "c" "\C-r" "Continue with display.") |
| ; (gud-def gud-finish "finish" "\C-f" "Finish executing current function.") |
| ; (gud-def gud-up "up %p" "<" "Up N stack frames (numeric arg).") |
| ; (gud-def gud-down "down %p" ">" "Down N stack frames (numeric arg).") |
| (gud-def gud-print "%e" "\C-p" "Evaluate perl expression at point.") |
| |
| (setq comint-prompt-regexp "^ DB<[0-9]+> ") |
| (run-hooks 'perldb-mode-hook) |
| ) |
| |
| ;; |
| ;; End of debugger-specific information |
| ;; |
| |
| |
| ;;; When we send a command to the debugger via gud-call, it's annoying |
| ;;; to see the command and the new prompt inserted into the debugger's |
| ;;; buffer; we have other ways of knowing the command has completed. |
| ;;; |
| ;;; If the buffer looks like this: |
| ;;; -------------------- |
| ;;; (gdb) set args foo bar |
| ;;; (gdb) -!- |
| ;;; -------------------- |
| ;;; (the -!- marks the location of point), and we type `C-x SPC' in a |
| ;;; source file to set a breakpoint, we want the buffer to end up like |
| ;;; this: |
| ;;; -------------------- |
| ;;; (gdb) set args foo bar |
| ;;; Breakpoint 1 at 0x92: file make-docfile.c, line 49. |
| ;;; (gdb) -!- |
| ;;; -------------------- |
| ;;; Essentially, the old prompt is deleted, and the command's output |
| ;;; and the new prompt take its place. |
| ;;; |
| ;;; Not echoing the command is easy enough; you send it directly using |
| ;;; comint-input-sender, and it never enters the buffer. However, |
| ;;; getting rid of the old prompt is trickier; you don't want to do it |
| ;;; when you send the command, since that will result in an annoying |
| ;;; flicker as the prompt is deleted, redisplay occurs while Emacs |
| ;;; waits for a response from the debugger, and the new prompt is |
| ;;; inserted. Instead, we'll wait until we actually get some output |
| ;;; from the subprocess before we delete the prompt. If the command |
| ;;; produced no output other than a new prompt, that prompt will most |
| ;;; likely be in the first chunk of output received, so we will delete |
| ;;; the prompt and then replace it with an identical one. If the |
| ;;; command produces output, the prompt is moving anyway, so the |
| ;;; flicker won't be annoying. |
| ;;; |
| ;;; So - when we want to delete the prompt upon receipt of the next |
| ;;; chunk of debugger output, we position gud-delete-prompt-marker at |
| ;;; the start of the prompt; the process filter will notice this, and |
| ;;; delete all text between it and the process output marker. If |
| ;;; gud-delete-prompt-marker points nowhere, we leave the current |
| ;;; prompt alone. |
| (defvar gud-delete-prompt-marker nil) |
| |
| |
| (defvar gdbish-comint-mode-map (copy-keymap comint-mode-map)) |
| (define-key gdbish-comint-mode-map "\C-c\M-\C-r" 'gud-display-registers-buffer) |
| (define-key gdbish-comint-mode-map "\C-c\M-\C-f" 'gud-display-stack-buffer) |
| (define-key gdbish-comint-mode-map "\C-c\M-\C-b" 'gud-display-breakpoints-buffer) |
| |
| (make-windows-menu gdbish-comint-mode-map) |
| (make-frames-menu gdbish-comint-mode-map) |
| |
| (defun gud-mode () |
| "Major mode for interacting with an inferior debugger process. |
| |
| You start it up with one of the commands M-x gdb, M-x sdb, M-x dbx, |
| or M-x xdb. Each entry point finishes by executing a hook; `gdb-mode-hook', |
| `sdb-mode-hook', `dbx-mode-hook' or `xdb-mode-hook' respectively. |
| |
| After startup, the following commands are available in both the GUD |
| interaction buffer and any source buffer GUD visits due to a breakpoint stop |
| or step operation: |
| |
| \\[gud-break] sets a breakpoint at the current file and line. In the |
| GUD buffer, the current file and line are those of the last breakpoint or |
| step. In a source buffer, they are the buffer's file and current line. |
| |
| \\[gud-remove] removes breakpoints on the current file and line. |
| |
| \\[gud-refresh] displays in the source window the last line referred to |
| in the gud buffer. |
| |
| \\[gud-step], \\[gud-next], and \\[gud-stepi] do a step-one-line, |
| step-one-line (not entering function calls), and step-one-instruction |
| and then update the source window with the current file and position. |
| \\[gud-cont] continues execution. |
| |
| \\[gud-print] tries to find the largest C lvalue or function-call expression |
| around point, and sends it to the debugger for value display. |
| |
| The above commands are common to all supported debuggers except xdb which |
| does not support stepping instructions. |
| |
| Under gdb, sdb and xdb, \\[gud-tbreak] behaves exactly like \\[gud-break], |
| except that the breakpoint is temporary; that is, it is removed when |
| execution stops on it. |
| |
| Under gdb, dbx, and xdb, \\[gud-up] pops up through an enclosing stack |
| frame. \\[gud-down] drops back down through one. |
| |
| If you are using gdb or xdb, \\[gud-finish] runs execution to the return from |
| the current function and stops. |
| |
| All the keystrokes above are accessible in the GUD buffer |
| with the prefix C-c, and in all buffers through the prefix C-x C-a. |
| |
| All pre-defined functions for which the concept make sense repeat |
| themselves the appropriate number of times if you give a prefix |
| argument. |
| |
| You may use the `gud-def' macro in the initialization hook to define other |
| commands. |
| |
| Other commands for interacting with the debugger process are inherited from |
| comint mode, which see." |
| (interactive) |
| (comint-mode) |
| (setq major-mode 'gud-mode) |
| (setq mode-name "Debugger") |
| (setq mode-line-process '(": %s")) |
| (use-local-map (copy-keymap gdbish-comint-mode-map)) |
| (setq gud-last-frame nil) |
| (make-local-variable 'comint-prompt-regexp) |
| (make-local-variable 'gud-delete-prompt-marker) |
| (setq gud-delete-prompt-marker (make-marker)) |
| (run-hooks 'gud-mode-hook) |
| ) |
| |
| (defvar gud-comint-buffer nil) |
| |
| ;; Chop STRING into words separated by SPC or TAB and return a list of them. |
| (defun gud-chop-words (string) |
| (let ((i 0) (beg 0) |
| (len (length string)) |
| (words nil)) |
| (while (< i len) |
| (if (memq (aref string i) '(?\t ? )) |
| (progn |
| (setq words (cons (substring string beg i) words) |
| beg (1+ i)) |
| (while (and (< beg len) (memq (aref string beg) '(?\t ? ))) |
| (setq beg (1+ beg))) |
| (setq i (1+ beg))) |
| (setq i (1+ i)))) |
| (if (< beg len) |
| (setq words (cons (substring string beg) words))) |
| (nreverse words))) |
| |
| (defvar gud-target-name "--unknown--" |
| "The apparent name of the program being debugged in a gud buffer. |
| For sure this the root string used in smashing together the gud |
| buffer's name, even if that doesn't happen to be the name of a |
| program.") |
| |
| ;; Perform initializations common to all debuggers. |
| (defun gud-common-init (command-line) |
| (let* ((words (gud-chop-words command-line)) |
| (program (car words)) |
| (file-word (let ((w (cdr words))) |
| (while (and w (= ?- (aref (car w) 0))) |
| (setq w (cdr w))) |
| (car w))) |
| (args (delq file-word (cdr words))) |
| (file (expand-file-name file-word)) |
| (filepart (file-name-nondirectory file)) |
| (buffer-name (concat "*gud-" filepart "*"))) |
| (switch-to-buffer buffer-name) |
| (setq default-directory (file-name-directory file)) |
| (or (bolp) (newline)) |
| (insert "Current directory is " default-directory "\n") |
| (let ((old-instance gdb-buffer-instance)) |
| (apply 'make-comint (concat "gud-" filepart) program nil |
| (gud-massage-args file args)) |
| (gud-mode) |
| (make-variable-buffer-local 'old-gdb-buffer-instance) |
| (setq old-gdb-buffer-instance old-instance)) |
| (make-variable-buffer-local 'gud-target-name) |
| (setq gud-target-name filepart)) |
| (set-process-filter (get-buffer-process (current-buffer)) 'gud-filter) |
| (set-process-sentinel (get-buffer-process (current-buffer)) 'gud-sentinel) |
| (gud-set-buffer) |
| ) |
| |
| (defun gud-set-buffer () |
| (cond ((eq major-mode 'gud-mode) |
| (setq gud-comint-buffer (current-buffer))))) |
| |
| ;; These functions are responsible for inserting output from your debugger |
| ;; into the buffer. The hard work is done by the method that is |
| ;; the value of gud-marker-filter. |
| |
| (defun gud-filter (proc string) |
| ;; Here's where the actual buffer insertion is done |
| (let ((inhibit-quit t)) |
| (save-excursion |
| (set-buffer (process-buffer proc)) |
| (let (moving output-after-point) |
| (save-excursion |
| (goto-char (process-mark proc)) |
| ;; If we have been so requested, delete the debugger prompt. |
| (if (marker-buffer gud-delete-prompt-marker) |
| (progn |
| (delete-region (point) gud-delete-prompt-marker) |
| (set-marker gud-delete-prompt-marker nil))) |
| (insert-before-markers (gud-marker-filter string)) |
| (setq moving (= (point) (process-mark proc))) |
| (setq output-after-point (< (point) (process-mark proc))) |
| ;; Check for a filename-and-line number. |
| ;; Don't display the specified file |
| ;; unless (1) point is at or after the position where output appears |
| ;; and (2) this buffer is on the screen. |
| (if (and gud-last-frame |
| (not output-after-point) |
| (get-buffer-window (current-buffer))) |
| (gud-display-frame))) |
| (if moving (goto-char (process-mark proc))))))) |
| |
| (defun gud-proc-died (proc) |
| ;; Stop displaying an arrow in a source file. |
| (setq overlay-arrow-position nil) |
| |
| ;; Kill the dummy process, so that C-x C-c won't worry about it. |
| (save-excursion |
| (set-buffer (process-buffer proc)) |
| (kill-process |
| (get-buffer-process |
| (gdb-get-instance-buffer gdb-buffer-instance 'gdb-inferior-io)))) |
| ) |
| |
| (defun gud-sentinel (proc msg) |
| (cond ((null (buffer-name (process-buffer proc))) |
| ;; buffer killed |
| (gud-proc-died proc) |
| (set-process-buffer proc nil)) |
| ((memq (process-status proc) '(signal exit)) |
| (gud-proc-died proc) |
| |
| ;; Fix the mode line. |
| (setq mode-line-process |
| (concat ": " |
| (symbol-name (process-status proc)))) |
| (let* ((obuf (current-buffer))) |
| ;; save-excursion isn't the right thing if |
| ;; process-buffer is current-buffer |
| (unwind-protect |
| (progn |
| ;; Write something in *compilation* and hack its mode line, |
| (set-buffer (process-buffer proc)) |
| ;; Force mode line redisplay soon |
| (set-buffer-modified-p (buffer-modified-p)) |
| (if (eobp) |
| (insert ?\n mode-name " " msg) |
| (save-excursion |
| (goto-char (point-max)) |
| (insert ?\n mode-name " " msg))) |
| ;; If buffer and mode line will show that the process |
| ;; is dead, we can delete it now. Otherwise it |
| ;; will stay around until M-x list-processes. |
| (delete-process proc)) |
| ;; Restore old buffer, but don't restore old point |
| ;; if obuf is the gud buffer. |
| (set-buffer obuf)))))) |
| |
| (defun gud-display-frame () |
| "Find and obey the last filename-and-line marker from the debugger. |
| Obeying it means displaying in another window the specified file and line." |
| (interactive) |
| (if gud-last-frame |
| (progn |
| ; (gud-set-buffer) |
| (gud-display-line (car gud-last-frame) (cdr gud-last-frame)) |
| (setq gud-last-last-frame gud-last-frame |
| gud-last-frame nil)))) |
| |
| ;; Make sure the file named TRUE-FILE is in a buffer that appears on the screen |
| ;; and that its line LINE is visible. |
| ;; Put the overlay-arrow on the line LINE in that buffer. |
| ;; Most of the trickiness in here comes from wanting to preserve the current |
| ;; region-restriction if that's possible. We use an explicit display-buffer |
| ;; to get around the fact that this is called inside a save-excursion. |
| |
| (defun gud-display-line (true-file line) |
| (let* ((buffer (gud-find-file true-file)) |
| (window (gud-display-source-buffer buffer)) |
| (pos)) |
| (if (not window) |
| (error "foo bar baz")) |
| ;;; (if (equal buffer (current-buffer)) |
| ;;; nil |
| ;;; (setq buffer-read-only nil)) |
| (save-excursion |
| ;;; (setq buffer-read-only t) |
| (set-buffer buffer) |
| (save-restriction |
| (widen) |
| (goto-line line) |
| (setq pos (point)) |
| (setq overlay-arrow-string "=>") |
| (or overlay-arrow-position |
| (setq overlay-arrow-position (make-marker))) |
| (set-marker overlay-arrow-position (point) (current-buffer))) |
| (cond ((or (< pos (point-min)) (> pos (point-max))) |
| (widen) |
| (goto-char pos)))) |
| (set-window-point window overlay-arrow-position))) |
| |
| ;;; The gud-call function must do the right thing whether its invoking |
| ;;; keystroke is from the GUD buffer itself (via major-mode binding) |
| ;;; or a C buffer. In the former case, we want to supply data from |
| ;;; gud-last-frame. Here's how we do it: |
| |
| (defun gud-format-command (str arg) |
| (let ((insource (not (eq (current-buffer) gud-comint-buffer)))) |
| (if (string-match "\\(.*\\)%f\\(.*\\)" str) |
| (setq str (concat |
| (substring str (match-beginning 1) (match-end 1)) |
| (file-name-nondirectory (if insource |
| (buffer-file-name) |
| (car gud-last-frame))) |
| (substring str (match-beginning 2) (match-end 2))))) |
| (if (string-match "\\(.*\\)%d\\(.*\\)" str) |
| (setq str (concat |
| (substring str (match-beginning 1) (match-end 1)) |
| (file-name-directory (if insource |
| (buffer-file-name) |
| (car gud-last-frame))) |
| (substring str (match-beginning 2) (match-end 2))))) |
| (if (string-match "\\(.*\\)%l\\(.*\\)" str) |
| (setq str (concat |
| (substring str (match-beginning 1) (match-end 1)) |
| (if insource |
| (save-excursion |
| (beginning-of-line) |
| (save-restriction (widen) |
| (1+ (count-lines 1 (point))))) |
| (cdr gud-last-frame)) |
| (substring str (match-beginning 2) (match-end 2))))) |
| (if (string-match "\\(.*\\)%e\\(.*\\)" str) |
| (setq str (concat |
| (substring str (match-beginning 1) (match-end 1)) |
| (find-c-expr) |
| (substring str (match-beginning 2) (match-end 2))))) |
| (if (string-match "\\(.*\\)%a\\(.*\\)" str) |
| (setq str (concat |
| (substring str (match-beginning 1) (match-end 1)) |
| (gud-read-address) |
| (substring str (match-beginning 2) (match-end 2))))) |
| (if (string-match "\\(.*\\)%p\\(.*\\)" str) |
| (setq str (concat |
| (substring str (match-beginning 1) (match-end 1)) |
| (if arg (int-to-string arg) "") |
| (substring str (match-beginning 2) (match-end 2))))) |
| ) |
| str |
| ) |
| |
| (defun gud-read-address () |
| "Return a string containing the core-address found in the buffer at point." |
| (save-excursion |
| (let ((pt (point)) found begin) |
| (setq found (if (search-backward "0x" (- pt 7) t) (point))) |
| (cond |
| (found (forward-char 2) |
| (buffer-substring found |
| (progn (re-search-forward "[^0-9a-f]") |
| (forward-char -1) |
| (point)))) |
| (t (setq begin (progn (re-search-backward "[^0-9]") |
| (forward-char 1) |
| (point))) |
| (forward-char 1) |
| (re-search-forward "[^0-9]") |
| (forward-char -1) |
| (buffer-substring begin (point))))))) |
| |
| (defun gud-call (fmt &optional arg) |
| (let ((msg (gud-format-command fmt arg))) |
| (message "Command: %s" msg) |
| (sit-for 0) |
| (gud-basic-call msg))) |
| |
| (defun gud-basic-call (command) |
| "Invoke the debugger COMMAND displaying source in other window." |
| (interactive) |
| (gud-set-buffer) |
| (let ((proc (get-buffer-process gud-comint-buffer))) |
| |
| ;; Arrange for the current prompt to get deleted. |
| (save-excursion |
| (set-buffer gud-comint-buffer) |
| (goto-char (process-mark proc)) |
| (beginning-of-line) |
| (if (looking-at comint-prompt-regexp) |
| (set-marker gud-delete-prompt-marker (point))) |
| (apply comint-input-sender (list proc command))))) |
| |
| (defun gud-refresh (&optional arg) |
| "Fix up a possibly garbled display, and redraw the arrow." |
| (interactive "P") |
| (recenter arg) |
| (or gud-last-frame (setq gud-last-frame gud-last-last-frame)) |
| (gud-display-frame)) |
| |
| ;;; Code for parsing expressions out of C code. The single entry point is |
| ;;; find-c-expr, which tries to return an lvalue expression from around point. |
| ;;; |
| ;;; The rest of this file is a hacked version of gdbsrc.el by |
| ;;; Debby Ayers <ayers@asc.slb.com>, |
| ;;; Rich Schaefer <schaefer@asc.slb.com> Schlumberger, Austin, Tx. |
| |
| (defun find-c-expr () |
| "Returns the C expr that surrounds point." |
| (interactive) |
| (save-excursion |
| (let ((p) (expr) (test-expr)) |
| (setq p (point)) |
| (setq expr (expr-cur)) |
| (setq test-expr (expr-prev)) |
| (while (expr-compound test-expr expr) |
| (setq expr (cons (car test-expr) (cdr expr))) |
| (goto-char (car expr)) |
| (setq test-expr (expr-prev))) |
| (goto-char p) |
| (setq test-expr (expr-next)) |
| (while (expr-compound expr test-expr) |
| (setq expr (cons (car expr) (cdr test-expr))) |
| (setq test-expr (expr-next)) |
| ) |
| (buffer-substring (car expr) (cdr expr))))) |
| |
| (defun expr-cur () |
| "Returns the expr that point is in; point is set to beginning of expr. |
| The expr is represented as a cons cell, where the car specifies the point in |
| the current buffer that marks the beginning of the expr and the cdr specifies |
| the character after the end of the expr." |
| (let ((p (point)) (begin) (end)) |
| (expr-backward-sexp) |
| (setq begin (point)) |
| (expr-forward-sexp) |
| (setq end (point)) |
| (if (>= p end) |
| (progn |
| (setq begin p) |
| (goto-char p) |
| (expr-forward-sexp) |
| (setq end (point)) |
| ) |
| ) |
| (goto-char begin) |
| (cons begin end))) |
| |
| (defun expr-backward-sexp () |
| "Version of `backward-sexp' that catches errors." |
| (condition-case nil |
| (backward-sexp) |
| (error t))) |
| |
| (defun expr-forward-sexp () |
| "Version of `forward-sexp' that catches errors." |
| (condition-case nil |
| (forward-sexp) |
| (error t))) |
| |
| (defun expr-prev () |
| "Returns the previous expr, point is set to beginning of that expr. |
| The expr is represented as a cons cell, where the car specifies the point in |
| the current buffer that marks the beginning of the expr and the cdr specifies |
| the character after the end of the expr" |
| (let ((begin) (end)) |
| (expr-backward-sexp) |
| (setq begin (point)) |
| (expr-forward-sexp) |
| (setq end (point)) |
| (goto-char begin) |
| (cons begin end))) |
| |
| (defun expr-next () |
| "Returns the following expr, point is set to beginning of that expr. |
| The expr is represented as a cons cell, where the car specifies the point in |
| the current buffer that marks the beginning of the expr and the cdr specifies |
| the character after the end of the expr." |
| (let ((begin) (end)) |
| (expr-forward-sexp) |
| (expr-forward-sexp) |
| (setq end (point)) |
| (expr-backward-sexp) |
| (setq begin (point)) |
| (cons begin end))) |
| |
| (defun expr-compound-sep (span-start span-end) |
| "Returns '.' for '->' & '.', returns ' ' for white space, |
| returns '?' for other punctuation." |
| (let ((result ? ) |
| (syntax)) |
| (while (< span-start span-end) |
| (setq syntax (char-syntax (char-after span-start))) |
| (cond |
| ((= syntax ? ) t) |
| ((= syntax ?.) (setq syntax (char-after span-start)) |
| (cond |
| ((= syntax ?.) (setq result ?.)) |
| ((and (= syntax ?-) (= (char-after (+ span-start 1)) ?>)) |
| (setq result ?.) |
| (setq span-start (+ span-start 1))) |
| (t (setq span-start span-end) |
| (setq result ??))))) |
| (setq span-start (+ span-start 1))) |
| result)) |
| |
| (defun expr-compound (first second) |
| "Non-nil if concatenating FIRST and SECOND makes a single C token. |
| The two exprs are represented as a cons cells, where the car |
| specifies the point in the current buffer that marks the beginning of the |
| expr and the cdr specifies the character after the end of the expr. |
| Link exprs of the form: |
| Expr -> Expr |
| Expr . Expr |
| Expr (Expr) |
| Expr [Expr] |
| (Expr) Expr |
| [Expr] Expr" |
| (let ((span-start (cdr first)) |
| (span-end (car second)) |
| (syntax)) |
| (setq syntax (expr-compound-sep span-start span-end)) |
| (cond |
| ((= (car first) (car second)) nil) |
| ((= (cdr first) (cdr second)) nil) |
| ((= syntax ?.) t) |
| ((= syntax ? ) |
| (setq span-start (char-after (- span-start 1))) |
| (setq span-end (char-after span-end)) |
| (cond |
| ((= span-start ?) ) t ) |
| ((= span-start ?] ) t ) |
| ((= span-end ?( ) t ) |
| ((= span-end ?[ ) t ) |
| (t nil)) |
| ) |
| (t nil)))) |
| |
| (provide 'gud) |
| |
| ;;; gud.el ends here |