--- /dev/null
+(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; see the file COPYING. If not, write to
+;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, 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).
+
+;; Jim Kingdon added support for ^Z^Z^Z annotations.
+
+;;; 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."))
+\f
+;; ======================================================================
+;; 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.
+\f
+;; ======================================================================
+;; 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."
+ (let ((instance (cons 'gdb-instance proc)))
+ (save-excursion
+ (set-buffer (process-buffer proc))
+ (if (not (equal gdb-buffer-instance instance))
+ (progn
+ (mapcar 'make-variable-buffer-local gdb-instance-variables)
+ (setq gdb-buffer-instance instance) ; These are both...
+ (setq gdb-buffer-type 'gud)))) ; ...instance variables
+ instance))
+
+(defun gdb-instance-process (inst) (cdr inst))
+
+(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.")
+
+(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-find-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))))
+
+;; More than one buffer can be associated with a gdb instance.
+;;
+;; Each buffer has a TYPE -- an atom 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 here:
+;;
+
+(defvar gdb-instance-buffer-rules-assoc
+ '((gud error) ; gud buffers construct specially
+ (gdb-partial-output-buffer
+ gdb-partial-output-name
+ )
+ (gdb-registers-buffer
+ gdb-registers-buffer-name)
+ (gdb-breakpoints-buffer
+ gdb-breakpoints-buffer-name)
+ (gdb-frames-buffer
+ gdb-frames-buffer-name)))
+
+
+;;
+;; 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.
+;;
+;; 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"))))
+
+(defun gdb-instance-enqueue-input (instance item)
+ "Enqueue an input item (a string or a list) for a gdb instance."
+ (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)
+ "Enqueue idle input (a string or a list) for a gdb instance."
+ (if (gdb-instance-prompting 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)))))
+
+(defun gdb-take-last-elt (l)
+ "Don't use this in general."
+ (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)
+ ("post-prompt" gdb-post-prompt)
+ ("source" gdb-source)
+ ("value-history-begin" gdb-ignore-annotation)
+ ("value-history-end" gdb-ignore-annotation)
+ ("arg-name-begin" gdb-ignore-annotation)
+ ("arg-name-end" gdb-ignore-annotation)
+ ("field-name-begin" gdb-ignore-annotation)
+ ("field-name-end" gdb-ignore-annotation)
+ ("field-begin" gdb-ignore-annotation)
+ ("field-end" gdb-ignore-annotation)
+ ("array-element-begin" gdb-ignore-annotation)
+ ("array-element-end" gdb-ignore-annotation))
+ "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]*")
+
+(defun gdb-source (instance args)
+ "Do not use this except as an annotation handler."
+ (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))))))
+
+(defun gdb-prompt (instance ignored)
+ "An annotation handler for `prompt'.
+This sends the next command (if any) to gdb."
+ (let ((sink (gdb-instance-output-sink instance)))
+ (cond
+ ((eq sink 'user) t)
+ ((eq sink 'post-emacs)
+ (set-gdb-instance-output-sink instance 'user))
+ ((or (eq sink 'emacs)
+ (eq sink 'pre-emacs))
+ (set-gdb-instance-output-sink instance 'user)
+ (error "Phase error in gdb-prompt (got %s)" sink))
+ (t (set-gdb-instance-output-sink instance 'user))))
+ (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)
+ (set-gdb-instance-prompting instance t))))))
+
+(defun gdb-send-item (instance item)
+ (dbug 'sending
+ (function
+ (lambda ()
+ (insert (format "%s\n" 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)))))
+
+(defun gdb-pre-prompt (instance ignored)
+ "An annotation handler for `pre-prompt'.
+This terminates the collection of output from a previous
+command if that happens to be in effect."
+ (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))))
+ ((eq sink 'pre-emacs)
+ (set-gdb-instance-output-sink instance 'user)
+ (error "Output sink phase error 1."))
+ ((eq sink 'post-emacs)
+ (set-gdb-instance-output-sink instance 'user)
+ (error "Output sink phase error 2.")))))
+
+(defun gdb-post-prompt (instance ignored)
+ "An annotation handler for `pre-prompt'.
+This begins the collection of output from the current
+command if that happens to be appropriate."
+ (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))
+
+ ((eq sink 'emacs)
+ (set-gdb-instance-output-sink instance 'user)
+ (error "Output sink phase error 3."))
+
+ ((eq sink 'post-emacs)
+ (set-gdb-instance-output-sink instance 'user)
+ (error "Output sink phase error 3.")))))
+
+
+(defmacro def-gdb-auto-update-trigger (name demand-predicate gdb-command output-handler)
+ (`
+ (defun (, name) (instance 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)))
+ (kill-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)))))
+
+
+
+(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)
+
+(def-gdb-auto-updated-buffer gdb-frames-buffer
+ gdb-invalidate-frames
+ "server where\n"
+ gdb-info-frames-handler)
+
+
+(def-gdb-auto-updated-buffer gdb-registers-buffer
+ gdb-invalidate-registers
+ "server info registers\n"
+ gdb-info-registers-handler)
+
+;;
+;; At any given time, output from gdb is being directed
+;; one of three places. By default, it goes into the gdb
+;; interaction buffer. For commands executed on behalf
+;; of emacs, it goes into a scratch buffer (not `the').
+;; Finally, some gdb output is simply thrown away; for example,
+;; the prompt that follows output from a command executed
+;; for emacs.
+;;
+
+(defvar gdb-output-sink 'user
+ "An buffer-local indication of how output from an inferior gdb
+should be directed. Legit values are:
+
+ USER -- the output should be appended to the gud
+ buffer.
+
+ PRE-EMACS -- throw away output preceding output for emacs.
+ EMACS -- redirect output to the partial-output buffer.
+ POST-EMACS -- throw away output following output for emacs.")
+
+(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.
+ (dbug 'annotation
+ '(lambda () (insert annotation-type "\n")))
+ (if annotation-rule
+ (funcall (car (cdr annotation-rule))
+ instance
+ annotation-arguments)
+ (error "Bogon gdb annotation %s." annotation)))))
+
+
+ ;; 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)
+ (t (error "Bogon output sink %d" 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))
+ (kill-region (point-min) (point-max))))
+
+;;
+;; Instance Buffers.
+;;
+;; These are buffers that display output from gdb (or other
+;; information) that we want to filter out from the general gdb
+;; interaction buffer. (e.g. the backtrace buffer).
+;;
+;; The general pattern is that each kind of buffer is associated
+;; with a rule to refresh its contents. The rule includes one
+;; function to call when it is noticed that the buffer is out of
+;; date. Typically, that will queue up an idle command for gdb.
+;;
+;; Every type of instance buffer is identified by some atom
+;; such as gdb-frames-buffer. An instance and one of these
+;; atoms uniquely identifies a particular instance buffer.
+;;
+
+(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)
+ new))))
+
+(defun gdb-rules-name-maker (rules) (car (cdr rules)))
+
+(defun gdb-look-for-tagged-buffer (instance key bufs)
+ (and bufs
+ (set-buffer (car bufs))
+ (or (and (eq gdb-buffer-instance instance)
+ (eq gdb-buffer-type key)
+ (car bufs))
+ (gdb-look-for-tagged-buffer instance key (cdr bufs)))))
+
+(defun gdb-instance-buffer-p (buf)
+ (save-excursion
+ (set-buffer buf)
+ (and gdb-buffer-type
+ (not (eq gdb-buffer-type 'gud)))))
+
+;;
+;; partial-output buffers
+;;
+;; These accumulate output from a command executed on
+;; behalf of emacs (rather than the user). When the
+;; output is complete, the hooks bound to `gdb-command-complete-hooks'
+;; are called (and then cleared). Usually these hooks are not
+;; set directly but rather implicitly according to the
+;; instance-buffer rules.
+;;
+
+(defun gdb-partial-output-name (instance)
+ (concat "*partial-output-"
+ (gdb-instance-target-string instance)
+ "*"))
+
+;;
+;; Backtrace buffers
+;;
+
+(defun gdb-frames-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-frames-buffer (instance)
+ (interactive (list (gdb-needed-default-instance)))
+ (display-buffer
+ (gdb-get-create-instance-buffer instance
+ 'gdb-frames-buffer)))
+
+;;
+;; Breakpoint buffers
+;;
+
+(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)))
+ (display-buffer
+ (gdb-get-create-instance-buffer instance
+ 'gdb-breakpoints-buffer)))
+
+
+;;
+;; Registers buffers
+;;
+
+(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)))
+ (display-buffer
+ (gdb-get-create-instance-buffer instance
+ 'gdb-registers-buffer)))
+
+
+
+
+(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)
+ "/offsite/kingdon/devo/s4/gdb/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)
+ ))
+
+ (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-step "step %p" "\C-s" "Step one source 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-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 "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)
+ (make-gdb-instance (get-buffer-process (current-buffer)))
+ )
+
+\f
+;; ======================================================================
+;; 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)
+ )
+\f
+;; ======================================================================
+;; 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)
+ )
+\f
+;; ======================================================================
+;; 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))
+\f
+;; ======================================================================
+;; 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
+;;
+
+\f
+;;; 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
+;;; process-send-string, 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)
+
+\f
+(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-frames-buffer)
+(define-key gdbish-comint-mode-map "\C-c\M-\C-b" 'gud-display-breakpoints-buffer)
+
+(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))
+ (make-local-variable 'gud-last-frame)
+ (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")
+ (apply 'make-comint (concat "gud-" filepart) program nil
+ (gud-massage-args file args))
+ (gud-mode)
+ (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-sentinel (proc msg)
+ (cond ((null (buffer-name (process-buffer proc)))
+ ;; buffer killed
+ ;; Stop displaying an arrow in a source file.
+ (setq overlay-arrow-position nil)
+ (set-process-buffer proc nil))
+ ((memq (process-status proc) '(signal exit))
+ ;; Stop displaying an arrow in a source file.
+ (setq overlay-arrow-position nil)
+ ;; 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 (display-buffer buffer))
+ (pos))
+;;; (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 ((command (concat command "\n"))
+ (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))))
+ (process-send-string 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))
+\f
+;;; 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
+
+(defun toggle-bp-this-line ()
+ (interactive)
+ (save-excursion
+ (let (bp-num bp-state)
+ (beginning-of-line 1)
+ (if (not (looking-at "\\([0-9]*\\)\\s-*\\S-*\\s-*\\S-*\\s-*\\(.\\)"))
+ (error "Not recognized as breakpoint line (demo foo).")
+ (process-send-string
+ gdb-buffer-process!!!
+ (concat
+ (if (eq ?y (char-after (match-beginning 2)))
+ "server disable "
+ "server enable ")
+ (buffer-substring (match-beginning 0)
+ (match-end 1))
+ "\n"))))))
+
+
projects / binutils-gdb.git / commitdiff