| 1 | (defmacro gud (form) |
| 2 | (` (save-excursion (set-buffer "*gud-a.out*") (, form)))) |
| 3 | |
| 4 | (defun dbug (foo &optional fun) |
| 5 | (save-excursion |
| 6 | (set-buffer (get-buffer-create "*trace*")) |
| 7 | (goto-char (point-max)) |
| 8 | (insert "***" (symbol-name foo) "\n") |
| 9 | (if fun |
| 10 | (funcall fun)))) |
| 11 | |
| 12 | |
| 13 | ;;; gud.el --- Grand Unified Debugger mode for gdb, sdb, dbx, or xdb |
| 14 | ;;; under Emacs |
| 15 | |
| 16 | ;; Author: Eric S. Raymond <esr@snark.thyrsus.com> |
| 17 | ;; Maintainer: FSF |
| 18 | ;; Version: 1.3 |
| 19 | ;; Keywords: unix, tools |
| 20 | |
| 21 | ;; Copyright (C) 1992, 1993 Free Software Foundation, Inc. |
| 22 | |
| 23 | ;; This file is part of GNU Emacs. |
| 24 | |
| 25 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
| 26 | ;; it under the terms of the GNU General Public License as published by |
| 27 | ;; the Free Software Foundation; either version 2, or (at your option) |
| 28 | ;; any later version. |
| 29 | |
| 30 | ;; GNU Emacs is distributed in the hope that it will be useful, |
| 31 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 32 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 33 | ;; GNU General Public License for more details. |
| 34 | |
| 35 | ;; You should have received a copy of the GNU General Public License |
| 36 | ;; along with GNU Emacs; see the file COPYING. If not, write to |
| 37 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
| 38 | |
| 39 | ;;; Commentary: |
| 40 | |
| 41 | ;; The ancestral gdb.el was by W. Schelter <wfs@rascal.ics.utexas.edu> |
| 42 | ;; It was later rewritten by rms. Some ideas were due to Masanobu. |
| 43 | ;; Grand Unification (sdb/dbx support) by Eric S. Raymond <esr@thyrsus.com> |
| 44 | ;; The overloading code was then rewritten by Barry Warsaw <bwarsaw@cen.com>, |
| 45 | ;; who also hacked the mode to use comint.el. Shane Hartman <shane@spr.com> |
| 46 | ;; added support for xdb (HPUX debugger). |
| 47 | |
| 48 | ;; Cygnus Support added support for gdb's --annotate=2. |
| 49 | |
| 50 | ;;; Code: |
| 51 | |
| 52 | (require 'comint) |
| 53 | (require 'etags) |
| 54 | |
| 55 | ;; ====================================================================== |
| 56 | ;; GUD commands must be visible in C buffers visited by GUD |
| 57 | |
| 58 | (defvar gud-key-prefix "\C-x\C-a" |
| 59 | "Prefix of all GUD commands valid in C buffers.") |
| 60 | |
| 61 | (global-set-key (concat gud-key-prefix "\C-l") 'gud-refresh) |
| 62 | (global-set-key "\C-x " 'gud-break) ;; backward compatibility hack |
| 63 | |
| 64 | ;; ====================================================================== |
| 65 | ;; the overloading mechanism |
| 66 | |
| 67 | (defun gud-overload-functions (gud-overload-alist) |
| 68 | "Overload functions defined in GUD-OVERLOAD-ALIST. |
| 69 | This association list has elements of the form |
| 70 | (ORIGINAL-FUNCTION-NAME OVERLOAD-FUNCTION)" |
| 71 | (mapcar |
| 72 | (function (lambda (p) (fset (car p) (symbol-function (cdr p))))) |
| 73 | gud-overload-alist)) |
| 74 | |
| 75 | (defun gud-massage-args (file args) |
| 76 | (error "GUD not properly entered.")) |
| 77 | |
| 78 | (defun gud-marker-filter (str) |
| 79 | (error "GUD not properly entered.")) |
| 80 | |
| 81 | (defun gud-find-file (f) |
| 82 | (error "GUD not properly entered.")) |
| 83 | \f |
| 84 | ;; ====================================================================== |
| 85 | ;; command definition |
| 86 | |
| 87 | ;; This macro is used below to define some basic debugger interface commands. |
| 88 | ;; Of course you may use `gud-def' with any other debugger command, including |
| 89 | ;; user defined ones. |
| 90 | |
| 91 | ;; A macro call like (gud-def FUNC NAME KEY DOC) expands to a form |
| 92 | ;; which defines FUNC to send the command NAME to the debugger, gives |
| 93 | ;; it the docstring DOC, and binds that function to KEY in the GUD |
| 94 | ;; major mode. The function is also bound in the global keymap with the |
| 95 | ;; GUD prefix. |
| 96 | |
| 97 | (defmacro gud-def (func cmd key &optional doc) |
| 98 | "Define FUNC to be a command sending STR and bound to KEY, with |
| 99 | optional doc string DOC. Certain %-escapes in the string arguments |
| 100 | are interpreted specially if present. These are: |
| 101 | |
| 102 | %f name (without directory) of current source file. |
| 103 | %d directory of current source file. |
| 104 | %l number of current source line |
| 105 | %e text of the C lvalue or function-call expression surrounding point. |
| 106 | %a text of the hexadecimal address surrounding point |
| 107 | %p prefix argument to the command (if any) as a number |
| 108 | |
| 109 | The `current' source file is the file of the current buffer (if |
| 110 | we're in a C file) or the source file current at the last break or |
| 111 | step (if we're in the GUD buffer). |
| 112 | The `current' line is that of the current buffer (if we're in a |
| 113 | source file) or the source line number at the last break or step (if |
| 114 | we're in the GUD buffer)." |
| 115 | (list 'progn |
| 116 | (list 'defun func '(arg) |
| 117 | (or doc "") |
| 118 | '(interactive "p") |
| 119 | (list 'gud-call cmd 'arg)) |
| 120 | (if key |
| 121 | (list 'define-key |
| 122 | '(current-local-map) |
| 123 | (concat "\C-c" key) |
| 124 | (list 'quote func))) |
| 125 | (if key |
| 126 | (list 'global-set-key |
| 127 | (list 'concat 'gud-key-prefix key) |
| 128 | (list 'quote func))))) |
| 129 | |
| 130 | ;; Where gud-display-frame should put the debugging arrow. This is |
| 131 | ;; set by the marker-filter, which scans the debugger's output for |
| 132 | ;; indications of the current program counter. |
| 133 | (defvar gud-last-frame nil) |
| 134 | |
| 135 | ;; Used by gud-refresh, which should cause gud-display-frame to redisplay |
| 136 | ;; the last frame, even if it's been called before and gud-last-frame has |
| 137 | ;; been set to nil. |
| 138 | (defvar gud-last-last-frame nil) |
| 139 | |
| 140 | ;; All debugger-specific information is collected here. |
| 141 | ;; Here's how it works, in case you ever need to add a debugger to the mode. |
| 142 | ;; |
| 143 | ;; Each entry must define the following at startup: |
| 144 | ;; |
| 145 | ;;<name> |
| 146 | ;; comint-prompt-regexp |
| 147 | ;; gud-<name>-massage-args |
| 148 | ;; gud-<name>-marker-filter |
| 149 | ;; gud-<name>-find-file |
| 150 | ;; |
| 151 | ;; The job of the massage-args method is to modify the given list of |
| 152 | ;; debugger arguments before running the debugger. |
| 153 | ;; |
| 154 | ;; The job of the marker-filter method is to detect file/line markers in |
| 155 | ;; strings and set the global gud-last-frame to indicate what display |
| 156 | ;; action (if any) should be triggered by the marker. Note that only |
| 157 | ;; whatever the method *returns* is displayed in the buffer; thus, you |
| 158 | ;; can filter the debugger's output, interpreting some and passing on |
| 159 | ;; the rest. |
| 160 | ;; |
| 161 | ;; The job of the find-file method is to visit and return the buffer indicated |
| 162 | ;; by the car of gud-tag-frame. This may be a file name, a tag name, or |
| 163 | ;; something else. |
| 164 | \f |
| 165 | ;; ====================================================================== |
| 166 | ;; gdb functions |
| 167 | |
| 168 | ;;; History of argument lists passed to gdb. |
| 169 | (defvar gud-gdb-history nil) |
| 170 | |
| 171 | (defun gud-gdb-massage-args (file args) |
| 172 | (cons "--annotate=2" (cons file args))) |
| 173 | |
| 174 | \f |
| 175 | ;; |
| 176 | ;; In this world, there are gdb instance objects (of unspecified |
| 177 | ;; representation) and buffers associated with those objects. |
| 178 | ;; |
| 179 | |
| 180 | ;; |
| 181 | ;; gdb-instance objects |
| 182 | ;; |
| 183 | |
| 184 | (defun make-gdb-instance (proc) |
| 185 | "Create a gdb instance object from a gdb process." |
| 186 | (setq last-proc proc) |
| 187 | (let ((instance (cons 'gdb-instance proc))) |
| 188 | (save-excursion |
| 189 | (set-buffer (process-buffer proc)) |
| 190 | (setq gdb-buffer-instance instance) |
| 191 | (progn |
| 192 | (mapcar 'make-variable-buffer-local gdb-instance-variables) |
| 193 | (setq gdb-buffer-type 'gud) |
| 194 | ;; If we're taking over the buffer of another process, |
| 195 | ;; take over it's ancillery buffers as well. |
| 196 | ;; |
| 197 | (let ((dead (or old-gdb-buffer-instance))) |
| 198 | (mapcar |
| 199 | (function |
| 200 | (lambda (b) |
| 201 | (progn |
| 202 | (set-buffer b) |
| 203 | (if (eq dead gdb-buffer-instance) |
| 204 | (setq gdb-buffer-instance instance))))) |
| 205 | (buffer-list))))) |
| 206 | instance)) |
| 207 | |
| 208 | (defun gdb-instance-process (inst) (cdr inst)) |
| 209 | |
| 210 | ;;; The list of instance variables is built up by the expansions of |
| 211 | ;;; DEF-GDB-VARIABLE |
| 212 | ;;; |
| 213 | (defvar gdb-instance-variables '() |
| 214 | "A list of variables that are local to the gud buffer associated |
| 215 | with a gdb instance.") |
| 216 | |
| 217 | (defmacro def-gdb-variable |
| 218 | (name accessor setter &optional default doc) |
| 219 | (` |
| 220 | (progn |
| 221 | (defvar (, name) (, default) (, (or doc "undocumented"))) |
| 222 | (if (not (memq '(, name) gdb-instance-variables)) |
| 223 | (setq gdb-instance-variables |
| 224 | (cons '(, name) gdb-instance-variables))) |
| 225 | (, (and accessor |
| 226 | (` |
| 227 | (defun (, accessor) (instance) |
| 228 | (let |
| 229 | ((buffer (gdb-get-instance-buffer instance 'gud))) |
| 230 | (and buffer |
| 231 | (save-excursion |
| 232 | (set-buffer buffer) |
| 233 | (, name)))))))) |
| 234 | (, (and setter |
| 235 | (` |
| 236 | (defun (, setter) (instance val) |
| 237 | (let |
| 238 | ((buffer (gdb-get-instance-buffer instance 'gud))) |
| 239 | (and buffer |
| 240 | (save-excursion |
| 241 | (set-buffer buffer) |
| 242 | (setq (, name) val))))))))))) |
| 243 | |
| 244 | (defmacro def-gdb-var (root-symbol &optional default doc) |
| 245 | (let* ((root (symbol-name root-symbol)) |
| 246 | (accessor (intern (concat "gdb-instance-" root))) |
| 247 | (setter (intern (concat "set-gdb-instance-" root))) |
| 248 | (var-name (intern (concat "gdb-" root)))) |
| 249 | (` (def-gdb-variable |
| 250 | (, var-name) (, accessor) (, setter) |
| 251 | (, default) (, doc))))) |
| 252 | |
| 253 | (def-gdb-var buffer-instance nil |
| 254 | "In an instance buffer, the buffer's instance.") |
| 255 | |
| 256 | (def-gdb-var buffer-type nil |
| 257 | "One of the symbols bound in gdb-instance-buffer-rules") |
| 258 | |
| 259 | (def-gdb-var burst "" |
| 260 | "A string of characters from gdb that have not yet been processed.") |
| 261 | |
| 262 | (def-gdb-var input-queue () |
| 263 | "A list of high priority gdb command objects.") |
| 264 | |
| 265 | (def-gdb-var idle-input-queue () |
| 266 | "A list of low priority gdb command objects.") |
| 267 | |
| 268 | (def-gdb-var prompting nil |
| 269 | "True when gdb is idle with no pending input.") |
| 270 | |
| 271 | (def-gdb-var output-sink 'user |
| 272 | "The disposition of the output of the current gdb command. |
| 273 | Possible values are these symbols: |
| 274 | |
| 275 | user -- gdb output should be copied to the gud buffer |
| 276 | for the user to see. |
| 277 | |
| 278 | inferior -- gdb output should be copied to the inferior-io buffer |
| 279 | |
| 280 | pre-emacs -- output should be ignored util the post-prompt |
| 281 | annotation is received. Then the output-sink |
| 282 | becomes:... |
| 283 | emacs -- output should be collected in the partial-output-buffer |
| 284 | for subsequent processing by a command. This is the |
| 285 | disposition of output generated by commands that |
| 286 | gud mode sends to gdb on its own behalf. |
| 287 | post-emacs -- ignore input until the prompt annotation is |
| 288 | received, then go to USER disposition. |
| 289 | ") |
| 290 | |
| 291 | (def-gdb-var current-item nil |
| 292 | "The most recent command item sent to gdb.") |
| 293 | |
| 294 | (def-gdb-var pending-triggers '() |
| 295 | "A list of trigger functions that have run later than their output |
| 296 | handlers.") |
| 297 | |
| 298 | (defun in-gdb-instance-context (instance form) |
| 299 | "Funcall `form' in the gud buffer of `instance'" |
| 300 | (save-excursion |
| 301 | (set-buffer (gdb-get-instance-buffer instance 'gud)) |
| 302 | (funcall form))) |
| 303 | |
| 304 | ;; end of instance vars |
| 305 | |
| 306 | ;; |
| 307 | ;; finding instances |
| 308 | ;; |
| 309 | |
| 310 | (defun gdb-proc->instance (proc) |
| 311 | (save-excursion |
| 312 | (set-buffer (process-buffer proc)) |
| 313 | gdb-buffer-instance)) |
| 314 | |
| 315 | (defun gdb-mru-instance-buffer () |
| 316 | "Return the most recently used (non-auxiliary) gdb gud buffer." |
| 317 | (save-excursion |
| 318 | (gdb-goto-first-gdb-instance (buffer-list)))) |
| 319 | |
| 320 | (defun gdb-goto-first-gdb-instance (blist) |
| 321 | "Use gdb-mru-instance-buffer -- not this." |
| 322 | (and blist |
| 323 | (progn |
| 324 | (set-buffer (car blist)) |
| 325 | (or (and gdb-buffer-instance |
| 326 | (eq gdb-buffer-type 'gud) |
| 327 | (car blist)) |
| 328 | (gdb-goto-first-gdb-instance (cdr blist)))))) |
| 329 | |
| 330 | (defun buffer-gdb-instance (buf) |
| 331 | (save-excursion |
| 332 | (set-buffer buf) |
| 333 | gdb-buffer-instance)) |
| 334 | |
| 335 | (defun gdb-needed-default-instance () |
| 336 | "Return the most recently used gdb instance or signal an error." |
| 337 | (let ((buffer (gdb-mru-instance-buffer))) |
| 338 | (or (and buffer (buffer-gdb-instance buffer)) |
| 339 | (error "No instance of gdb found.")))) |
| 340 | |
| 341 | (defun gdb-instance-target-string (instance) |
| 342 | "The apparent name of the program being debugged by a gdb instance. |
| 343 | For sure this the root string used in smashing together the gud |
| 344 | buffer's name, even if that doesn't happen to be the name of a |
| 345 | program." |
| 346 | (in-gdb-instance-context |
| 347 | instance |
| 348 | (function (lambda () gud-target-name)))) |
| 349 | |
| 350 | \f |
| 351 | |
| 352 | ;; |
| 353 | ;; Instance Buffers. |
| 354 | ;; |
| 355 | |
| 356 | ;; More than one buffer can be associated with a gdb instance. |
| 357 | ;; |
| 358 | ;; Each buffer has a TYPE -- a symbol that identifies the function |
| 359 | ;; of that particular buffer. |
| 360 | ;; |
| 361 | ;; The usual gud interaction buffer is given the type `gud' and |
| 362 | ;; is constructed specially. |
| 363 | ;; |
| 364 | ;; Others are constructed by gdb-get-create-instance-buffer and |
| 365 | ;; named according to the rules set forth in the gdb-instance-buffer-rules-assoc |
| 366 | |
| 367 | (defun gdb-get-instance-buffer (instance key) |
| 368 | "Return the instance buffer for `instance' tagged with type `key'. |
| 369 | The key should be one of the cars in `gdb-instance-buffer-rules-assoc'." |
| 370 | (save-excursion |
| 371 | (gdb-look-for-tagged-buffer instance key (buffer-list)))) |
| 372 | |
| 373 | (defun gdb-get-create-instance-buffer (instance key) |
| 374 | "Create a new gdb instance buffer of the type specified by `key'. |
| 375 | The key should be one of the cars in `gdb-instance-buffer-rules-assoc'." |
| 376 | (or (gdb-get-instance-buffer instance key) |
| 377 | (let* ((rules (assoc key gdb-instance-buffer-rules-assoc)) |
| 378 | (name (funcall (gdb-rules-name-maker rules) instance)) |
| 379 | (new (get-buffer-create name))) |
| 380 | (save-excursion |
| 381 | (set-buffer new) |
| 382 | (make-variable-buffer-local 'gdb-buffer-type) |
| 383 | (setq gdb-buffer-type key) |
| 384 | (make-variable-buffer-local 'gdb-buffer-instance) |
| 385 | (setq gdb-buffer-instance instance) |
| 386 | (if (cdr (cdr rules)) |
| 387 | (funcall (car (cdr (cdr rules))))) |
| 388 | new)))) |
| 389 | |
| 390 | (defun gdb-rules-name-maker (rules) (car (cdr rules))) |
| 391 | |
| 392 | (defun gdb-look-for-tagged-buffer (instance key bufs) |
| 393 | (let ((retval nil)) |
| 394 | (while (and (not retval) bufs) |
| 395 | (set-buffer (car bufs)) |
| 396 | (if (and (eq gdb-buffer-instance instance) |
| 397 | (eq gdb-buffer-type key)) |
| 398 | (setq retval (car bufs))) |
| 399 | (setq bufs (cdr bufs)) |
| 400 | ) |
| 401 | retval)) |
| 402 | |
| 403 | (defun gdb-instance-buffer-p (buf) |
| 404 | (save-excursion |
| 405 | (set-buffer buf) |
| 406 | (and gdb-buffer-type |
| 407 | (not (eq gdb-buffer-type 'gud))))) |
| 408 | |
| 409 | ;; |
| 410 | ;; This assoc maps buffer type symbols to rules. Each rule is a list of |
| 411 | ;; at least one and possible more functions. The functions have these |
| 412 | ;; roles in defining a buffer type: |
| 413 | ;; |
| 414 | ;; NAME - take an instance, return a name for this type buffer for that |
| 415 | ;; instance. |
| 416 | ;; The remaining function(s) are optional: |
| 417 | ;; |
| 418 | ;; MODE - called in new new buffer with no arguments, should establish |
| 419 | ;; the proper mode for the buffer. |
| 420 | ;; |
| 421 | |
| 422 | (defvar gdb-instance-buffer-rules-assoc '()) |
| 423 | |
| 424 | (defun gdb-set-instance-buffer-rules (buffer-type &rest rules) |
| 425 | (let ((binding (assoc buffer-type gdb-instance-buffer-rules-assoc))) |
| 426 | (if binding |
| 427 | (setcdr binding rules) |
| 428 | (setq gdb-instance-buffer-rules-assoc |
| 429 | (cons (cons buffer-type rules) |
| 430 | gdb-instance-buffer-rules-assoc))))) |
| 431 | |
| 432 | (gdb-set-instance-buffer-rules 'gud 'error) ; gud buffers are an exception to the rules |
| 433 | |
| 434 | ;; |
| 435 | ;; partial-output buffers |
| 436 | ;; |
| 437 | ;; These accumulate output from a command executed on |
| 438 | ;; behalf of emacs (rather than the user). |
| 439 | ;; |
| 440 | |
| 441 | (gdb-set-instance-buffer-rules 'gdb-partial-output-buffer |
| 442 | 'gdb-partial-output-name) |
| 443 | |
| 444 | (defun gdb-partial-output-name (instance) |
| 445 | (concat "*partial-output-" |
| 446 | (gdb-instance-target-string instance) |
| 447 | "*")) |
| 448 | |
| 449 | \f |
| 450 | (gdb-set-instance-buffer-rules 'gdb-inferior-io |
| 451 | 'gdb-inferior-io-name |
| 452 | 'gud-inferior-io-mode) |
| 453 | |
| 454 | (defun gdb-inferior-io-name (instance) |
| 455 | (concat "*input/output of " |
| 456 | (gdb-instance-target-string instance) |
| 457 | "*")) |
| 458 | |
| 459 | (defvar gdb-inferior-io-mode-map (copy-keymap comint-mode-map)) |
| 460 | (define-key comint-mode-map "\C-c\C-c" 'gdb-inferior-io-interrupt) |
| 461 | (define-key comint-mode-map "\C-c\C-z" 'gdb-inferior-io-stop) |
| 462 | (define-key comint-mode-map "\C-c\C-\\" 'gdb-inferior-io-quit) |
| 463 | (define-key comint-mode-map "\C-c\C-d" 'gdb-inferior-io-eof) |
| 464 | |
| 465 | (defun gud-inferior-io-mode () |
| 466 | "Major mode for gud inferior-io. |
| 467 | |
| 468 | \\{comint-mode-map}" |
| 469 | ;; We want to use comint because it has various nifty and familiar |
| 470 | ;; features. We don't need a process, but comint wants one, so create |
| 471 | ;; a dummy one. |
| 472 | (make-comint (substring (buffer-name) 1 (- (length (buffer-name)) 1)) |
| 473 | "/bin/cat") |
| 474 | (setq major-mode 'gud-inferior-io-mode) |
| 475 | (setq mode-name "Debuggee I/O") |
| 476 | (setq comint-input-sender 'gud-inferior-io-sender) |
| 477 | ) |
| 478 | |
| 479 | (defun gud-inferior-io-sender (proc string) |
| 480 | (save-excursion |
| 481 | (set-buffer (process-buffer proc)) |
| 482 | (let ((instance gdb-buffer-instance)) |
| 483 | (set-buffer (gdb-get-instance-buffer instance 'gud)) |
| 484 | (let ((gud-proc (get-buffer-process (current-buffer)))) |
| 485 | (process-send-string gud-proc string) |
| 486 | (process-send-string gud-proc "\n") |
| 487 | )) |
| 488 | )) |
| 489 | |
| 490 | (defun gdb-inferior-io-interrupt (instance) |
| 491 | "Interrupt the program being debugged." |
| 492 | (interactive (list (gdb-needed-default-instance))) |
| 493 | (interrupt-process |
| 494 | (get-buffer-process (gdb-get-instance-buffer instance 'gud)) comint-ptyp)) |
| 495 | |
| 496 | (defun gdb-inferior-io-quit (instance) |
| 497 | "Send quit signal to the program being debugged." |
| 498 | (interactive (list (gdb-needed-default-instance))) |
| 499 | (quit-process |
| 500 | (get-buffer-process (gdb-get-instance-buffer instance 'gud)) comint-ptyp)) |
| 501 | |
| 502 | (defun gdb-inferior-io-stop (instance) |
| 503 | "Stop the program being debugged." |
| 504 | (interactive (list (gdb-needed-default-instance))) |
| 505 | (stop-process |
| 506 | (get-buffer-process (gdb-get-instance-buffer instance 'gud)) comint-ptyp)) |
| 507 | |
| 508 | (defun gdb-inferior-io-eof (instance) |
| 509 | "Send end-of-file to the program being debugged." |
| 510 | (interactive (list (gdb-needed-default-instance))) |
| 511 | (process-send-eof |
| 512 | (get-buffer-process (gdb-get-instance-buffer instance 'gud)))) |
| 513 | \f |
| 514 | |
| 515 | ;; |
| 516 | ;; gdb communications |
| 517 | ;; |
| 518 | |
| 519 | ;; INPUT: things sent to gdb |
| 520 | ;; |
| 521 | ;; Each instance has a high and low priority |
| 522 | ;; input queue. Low priority input is sent only |
| 523 | ;; when the high priority queue is idle. |
| 524 | ;; |
| 525 | ;; The queues are lists. Each element is either |
| 526 | ;; a string (indicating user or user-like input) |
| 527 | ;; or a list of the form: |
| 528 | ;; |
| 529 | ;; (INPUT-STRING HANDLER-FN) |
| 530 | ;; |
| 531 | ;; |
| 532 | ;; The handler function will be called from the |
| 533 | ;; partial-output buffer when the command completes. |
| 534 | ;; This is the way to write commands which |
| 535 | ;; invoke gdb commands autonomously. |
| 536 | ;; |
| 537 | ;; These lists are consumed tail first. |
| 538 | ;; |
| 539 | |
| 540 | (defun gdb-send (proc string) |
| 541 | "A comint send filter for gdb. |
| 542 | This filter may simply queue output for a later time." |
| 543 | (let ((instance (gdb-proc->instance proc))) |
| 544 | (gdb-instance-enqueue-input instance (concat string "\n")))) |
| 545 | |
| 546 | ;; Note: Stuff enqueued here will be sent to the next prompt, even if it |
| 547 | ;; is a query, or other non-top-level prompt. To guarantee stuff will get |
| 548 | ;; sent to the top-level prompt, currently it must be put in the idle queue. |
| 549 | ;; ^^^^^^^^^ |
| 550 | ;; [This should encourage gud extentions that invoke gdb commands to let |
| 551 | ;; the user go first; it is not a bug. -t] |
| 552 | ;; |
| 553 | |
| 554 | (defun gdb-instance-enqueue-input (instance item) |
| 555 | (if (gdb-instance-prompting instance) |
| 556 | (progn |
| 557 | (gdb-send-item instance item) |
| 558 | (set-gdb-instance-prompting instance nil)) |
| 559 | (set-gdb-instance-input-queue |
| 560 | instance |
| 561 | (cons item (gdb-instance-input-queue instance))))) |
| 562 | |
| 563 | (defun gdb-instance-dequeue-input (instance) |
| 564 | (let ((queue (gdb-instance-input-queue instance))) |
| 565 | (and queue |
| 566 | (if (not (cdr queue)) |
| 567 | (let ((answer (car queue))) |
| 568 | (set-gdb-instance-input-queue instance '()) |
| 569 | answer) |
| 570 | (gdb-take-last-elt queue))))) |
| 571 | |
| 572 | (defun gdb-instance-enqueue-idle-input (instance item) |
| 573 | (if (and (gdb-instance-prompting instance) |
| 574 | (not (gdb-instance-input-queue instance))) |
| 575 | (progn |
| 576 | (gdb-send-item instance item) |
| 577 | (set-gdb-instance-prompting instance nil)) |
| 578 | (set-gdb-instance-idle-input-queue |
| 579 | instance |
| 580 | (cons item (gdb-instance-idle-input-queue instance))))) |
| 581 | |
| 582 | (defun gdb-instance-dequeue-idle-input (instance) |
| 583 | (let ((queue (gdb-instance-idle-input-queue instance))) |
| 584 | (and queue |
| 585 | (if (not (cdr queue)) |
| 586 | (let ((answer (car queue))) |
| 587 | (set-gdb-instance-idle-input-queue instance '()) |
| 588 | answer) |
| 589 | (gdb-take-last-elt queue))))) |
| 590 | |
| 591 | ; Don't use this in general. |
| 592 | (defun gdb-take-last-elt (l) |
| 593 | (if (cdr (cdr l)) |
| 594 | (gdb-take-last-elt (cdr l)) |
| 595 | (let ((answer (car (cdr l)))) |
| 596 | (setcdr l '()) |
| 597 | answer))) |
| 598 | |
| 599 | \f |
| 600 | ;; |
| 601 | ;; output -- things gdb prints to emacs |
| 602 | ;; |
| 603 | ;; GDB output is a stream interrupted by annotations. |
| 604 | ;; Annotations can be recognized by their beginning |
| 605 | ;; with \C-j\C-z\C-z<tag><opt>\C-j |
| 606 | ;; |
| 607 | ;; The tag is a string obeying symbol syntax. |
| 608 | ;; |
| 609 | ;; The optional part `<opt>' can be either the empty string |
| 610 | ;; or a space followed by more data relating to the annotation. |
| 611 | ;; For example, the SOURCE annotation is followed by a filename, |
| 612 | ;; line number and various useless goo. This data must not include |
| 613 | ;; any newlines. |
| 614 | ;; |
| 615 | |
| 616 | |
| 617 | (defun gud-gdb-marker-filter (string) |
| 618 | "A gud marker filter for gdb." |
| 619 | ;; Bogons don't tell us the process except through scoping crud. |
| 620 | (let ((instance (gdb-proc->instance proc))) |
| 621 | (gdb-output-burst instance string))) |
| 622 | |
| 623 | (defvar gdb-annotation-rules |
| 624 | '(("frames-invalid" gdb-invalidate-frames) |
| 625 | ("breakpoints-invalid" gdb-invalidate-breakpoints) |
| 626 | ("pre-prompt" gdb-pre-prompt) |
| 627 | ("prompt" gdb-prompt) |
| 628 | ("commands" gdb-subprompt) |
| 629 | ("overload-choice" gdb-subprompt) |
| 630 | ("query" gdb-subprompt) |
| 631 | ("prompt-for-continue" gdb-subprompt) |
| 632 | ("post-prompt" gdb-post-prompt) |
| 633 | ("source" gdb-source) |
| 634 | ("starting" gdb-starting) |
| 635 | ("exited" gdb-stopping) |
| 636 | ("signalled" gdb-stopping) |
| 637 | ("signal" gdb-stopping) |
| 638 | ("breakpoint" gdb-stopping) |
| 639 | ("watchpoint" gdb-stopping) |
| 640 | ("stopped" gdb-stopped) |
| 641 | ) |
| 642 | "An assoc mapping annotation tags to functions which process them.") |
| 643 | |
| 644 | |
| 645 | (defun gdb-ignore-annotation (instance args) |
| 646 | nil) |
| 647 | |
| 648 | (defconst gdb-source-spec-regexp |
| 649 | "\\(.*\\):\\([0-9]*\\):[0-9]*:[a-z]*:0x[a-f0-9]*") |
| 650 | |
| 651 | ;; Do not use this except as an annotation handler." |
| 652 | (defun gdb-source (instance args) |
| 653 | (string-match gdb-source-spec-regexp args) |
| 654 | ;; Extract the frame position from the marker. |
| 655 | (setq gud-last-frame |
| 656 | (cons |
| 657 | (substring args (match-beginning 1) (match-end 1)) |
| 658 | (string-to-int (substring args |
| 659 | (match-beginning 2) |
| 660 | (match-end 2)))))) |
| 661 | |
| 662 | ;; An annotation handler for `prompt'. |
| 663 | ;; This sends the next command (if any) to gdb. |
| 664 | (defun gdb-prompt (instance ignored) |
| 665 | (let ((sink (gdb-instance-output-sink instance))) |
| 666 | (cond |
| 667 | ((eq sink 'user) t) |
| 668 | ((eq sink 'post-emacs) |
| 669 | (set-gdb-instance-output-sink instance 'user)) |
| 670 | (t |
| 671 | (set-gdb-instance-output-sink instance 'user) |
| 672 | (error "Phase error in gdb-prompt (got %s)" sink)))) |
| 673 | (let ((highest (gdb-instance-dequeue-input instance))) |
| 674 | (if highest |
| 675 | (gdb-send-item instance highest) |
| 676 | (let ((lowest (gdb-instance-dequeue-idle-input instance))) |
| 677 | (if lowest |
| 678 | (gdb-send-item instance lowest) |
| 679 | (progn |
| 680 | (set-gdb-instance-prompting instance t) |
| 681 | (gud-display-frame))))))) |
| 682 | |
| 683 | ;; An annotation handler for non-top-level prompts. |
| 684 | (defun gdb-subprompt (instance ignored) |
| 685 | (let ((highest (gdb-instance-dequeue-input instance))) |
| 686 | (if highest |
| 687 | (gdb-send-item instance highest) |
| 688 | (set-gdb-instance-prompting instance t)))) |
| 689 | |
| 690 | (defun gdb-send-item (instance item) |
| 691 | (set-gdb-instance-current-item instance item) |
| 692 | (if (stringp item) |
| 693 | (progn |
| 694 | (set-gdb-instance-output-sink instance 'user) |
| 695 | (process-send-string (gdb-instance-process instance) |
| 696 | item)) |
| 697 | (progn |
| 698 | (gdb-clear-partial-output instance) |
| 699 | (set-gdb-instance-output-sink instance 'pre-emacs) |
| 700 | (process-send-string (gdb-instance-process instance) |
| 701 | (car item))))) |
| 702 | |
| 703 | ;; An annotation handler for `pre-prompt'. |
| 704 | ;; This terminates the collection of output from a previous |
| 705 | ;; command if that happens to be in effect. |
| 706 | (defun gdb-pre-prompt (instance ignored) |
| 707 | (let ((sink (gdb-instance-output-sink instance))) |
| 708 | (cond |
| 709 | ((eq sink 'user) t) |
| 710 | ((eq sink 'emacs) |
| 711 | (set-gdb-instance-output-sink instance 'post-emacs) |
| 712 | (let ((handler |
| 713 | (car (cdr (gdb-instance-current-item instance))))) |
| 714 | (save-excursion |
| 715 | (set-buffer (gdb-get-create-instance-buffer |
| 716 | instance 'gdb-partial-output-buffer)) |
| 717 | (funcall handler)))) |
| 718 | (t |
| 719 | (set-gdb-instance-output-sink instance 'user) |
| 720 | (error "Output sink phase error 1."))))) |
| 721 | |
| 722 | ;; An annotation handler for `starting'. This says that I/O for the subprocess |
| 723 | ;; is now the program being debugged, not GDB. |
| 724 | (defun gdb-starting (instance ignored) |
| 725 | (let ((sink (gdb-instance-output-sink instance))) |
| 726 | (cond |
| 727 | ((eq sink 'user) |
| 728 | (set-gdb-instance-output-sink instance 'inferior) |
| 729 | ;; FIXME: need to send queued input |
| 730 | ) |
| 731 | (t (error "Unexpected `starting' annotation"))))) |
| 732 | |
| 733 | ;; An annotation handler for `exited' and other annotations which say that |
| 734 | ;; I/O for the subprocess is now GDB, not the program being debugged. |
| 735 | (defun gdb-stopping (instance ignored) |
| 736 | (let ((sink (gdb-instance-output-sink instance))) |
| 737 | (cond |
| 738 | ((eq sink 'inferior) |
| 739 | (set-gdb-instance-output-sink instance 'user) |
| 740 | ) |
| 741 | (t (error "Unexpected stopping annotation"))))) |
| 742 | |
| 743 | ;; An annotation handler for `stopped'. It is just like gdb-stopping, except |
| 744 | ;; that if we already set the output sink to 'user in gdb-stopping, that is |
| 745 | ;; fine. |
| 746 | (defun gdb-stopped (instance ignored) |
| 747 | (let ((sink (gdb-instance-output-sink instance))) |
| 748 | (cond |
| 749 | ((eq sink 'inferior) |
| 750 | (set-gdb-instance-output-sink instance 'user) |
| 751 | ) |
| 752 | ((eq sink 'user) |
| 753 | t) |
| 754 | (t (error "Unexpected stopping annotation"))))) |
| 755 | |
| 756 | ;; An annotation handler for `post-prompt'. |
| 757 | ;; This begins the collection of output from the current |
| 758 | ;; command if that happens to be appropriate." |
| 759 | (defun gdb-post-prompt (instance ignored) |
| 760 | (gdb-invalidate-registers instance ignored) |
| 761 | (let ((sink (gdb-instance-output-sink instance))) |
| 762 | (cond |
| 763 | ((eq sink 'user) t) |
| 764 | ((eq sink 'pre-emacs) |
| 765 | (set-gdb-instance-output-sink instance 'emacs)) |
| 766 | |
| 767 | (t |
| 768 | (set-gdb-instance-output-sink instance 'user) |
| 769 | (error "Output sink phase error 3."))))) |
| 770 | |
| 771 | ;; Handle a burst of output from a gdb instance. |
| 772 | ;; This function is (indirectly) used as a gud-marker-filter. |
| 773 | ;; It must return output (if any) to be insterted in the gud |
| 774 | ;; buffer. |
| 775 | |
| 776 | (defun gdb-output-burst (instance string) |
| 777 | "Handle a burst of output from a gdb instance. |
| 778 | This function is (indirectly) used as a gud-marker-filter. |
| 779 | It must return output (if any) to be insterted in the gud |
| 780 | buffer." |
| 781 | |
| 782 | (save-match-data |
| 783 | (let ( |
| 784 | ;; Recall the left over burst from last time |
| 785 | (burst (concat (gdb-instance-burst instance) string)) |
| 786 | ;; Start accumulating output for the gud buffer |
| 787 | (output "")) |
| 788 | |
| 789 | ;; Process all the complete markers in this chunk. |
| 790 | |
| 791 | (while (string-match "\n\032\032\\(.*\\)\n" burst) |
| 792 | (let ((annotation (substring burst |
| 793 | (match-beginning 1) |
| 794 | (match-end 1)))) |
| 795 | |
| 796 | ;; Stuff prior to the match is just ordinary output. |
| 797 | ;; It is either concatenated to OUTPUT or directed |
| 798 | ;; elsewhere. |
| 799 | (setq output |
| 800 | (gdb-concat-output |
| 801 | instance |
| 802 | output |
| 803 | (substring burst 0 (match-beginning 0)))) |
| 804 | |
| 805 | ;; Take that stuff off the burst. |
| 806 | (setq burst (substring burst (match-end 0))) |
| 807 | |
| 808 | ;; Parse the tag from the annotation, and maybe its arguments. |
| 809 | (string-match "\\(\\S-*\\) ?\\(.*\\)" annotation) |
| 810 | (let* ((annotation-type (substring annotation |
| 811 | (match-beginning 1) |
| 812 | (match-end 1))) |
| 813 | (annotation-arguments (substring annotation |
| 814 | (match-beginning 2) |
| 815 | (match-end 2))) |
| 816 | (annotation-rule (assoc annotation-type |
| 817 | gdb-annotation-rules))) |
| 818 | ;; Call the handler for this annotation. |
| 819 | (if annotation-rule |
| 820 | (funcall (car (cdr annotation-rule)) |
| 821 | instance |
| 822 | annotation-arguments) |
| 823 | ;; Else the annotation is not recognized. Ignore it silently, |
| 824 | ;; so that GDB can add new annotations without causing |
| 825 | ;; us to blow up. |
| 826 | )))) |
| 827 | |
| 828 | |
| 829 | ;; Does the remaining text end in a partial line? |
| 830 | ;; If it does, then keep part of the burst until we get more. |
| 831 | (if (string-match "\n\\'\\|\n\032\\'\\|\n\032\032.*\\'" |
| 832 | burst) |
| 833 | (progn |
| 834 | ;; Everything before the potential marker start can be output. |
| 835 | (setq output |
| 836 | (gdb-concat-output |
| 837 | instance |
| 838 | output |
| 839 | (substring burst 0 (match-beginning 0)))) |
| 840 | |
| 841 | ;; Everything after, we save, to combine with later input. |
| 842 | (setq burst (substring burst (match-beginning 0)))) |
| 843 | |
| 844 | ;; In case we know the burst contains no partial annotations: |
| 845 | (progn |
| 846 | (setq output (gdb-concat-output instance output burst)) |
| 847 | (setq burst ""))) |
| 848 | |
| 849 | ;; Save the remaining burst for the next call to this function. |
| 850 | (set-gdb-instance-burst instance burst) |
| 851 | output))) |
| 852 | |
| 853 | (defun gdb-concat-output (instance so-far new) |
| 854 | (let ((sink (gdb-instance-output-sink instance))) |
| 855 | (cond |
| 856 | ((eq sink 'user) (concat so-far new)) |
| 857 | ((or (eq sink 'pre-emacs) (eq sink 'post-emacs)) so-far) |
| 858 | ((eq sink 'emacs) |
| 859 | (gdb-append-to-partial-output instance new) |
| 860 | so-far) |
| 861 | ((eq sink 'inferior) |
| 862 | (gdb-append-to-inferior-io instance new) |
| 863 | so-far) |
| 864 | (t (error "Bogon output sink %S" sink))))) |
| 865 | |
| 866 | (defun gdb-append-to-partial-output (instance string) |
| 867 | (save-excursion |
| 868 | (set-buffer |
| 869 | (gdb-get-create-instance-buffer |
| 870 | instance 'gdb-partial-output-buffer)) |
| 871 | (goto-char (point-max)) |
| 872 | (insert string))) |
| 873 | |
| 874 | (defun gdb-clear-partial-output (instance) |
| 875 | (save-excursion |
| 876 | (set-buffer |
| 877 | (gdb-get-create-instance-buffer |
| 878 | instance 'gdb-partial-output-buffer)) |
| 879 | (delete-region (point-min) (point-max)))) |
| 880 | |
| 881 | (defun gdb-append-to-inferior-io (instance string) |
| 882 | (save-excursion |
| 883 | (set-buffer |
| 884 | (gdb-get-create-instance-buffer |
| 885 | instance 'gdb-inferior-io)) |
| 886 | (goto-char (point-max)) |
| 887 | (insert-before-markers string)) |
| 888 | (gud-display-buffer |
| 889 | (gdb-get-create-instance-buffer instance |
| 890 | 'gdb-inferior-io))) |
| 891 | |
| 892 | (defun gdb-clear-inferior-io (instance) |
| 893 | (save-excursion |
| 894 | (set-buffer |
| 895 | (gdb-get-create-instance-buffer |
| 896 | instance 'gdb-inferior-io)) |
| 897 | (delete-region (point-min) (point-max)))) |
| 898 | \f |
| 899 | |
| 900 | |
| 901 | ;; One trick is to have a command who's output is always available in |
| 902 | ;; a buffer of it's own, and is always up to date. We build several |
| 903 | ;; buffers of this type. |
| 904 | ;; |
| 905 | ;; There are two aspects to this: gdb has to tell us when the output |
| 906 | ;; for that command might have changed, and we have to be able to run |
| 907 | ;; the command behind the user's back. |
| 908 | ;; |
| 909 | ;; The idle input queue and the output phasing associated with |
| 910 | ;; the instance variable `(gdb-instance-output-sink instance)' help |
| 911 | ;; us to run commands behind the user's back. |
| 912 | ;; |
| 913 | ;; Below is the code for specificly managing buffers of output from one |
| 914 | ;; command. |
| 915 | ;; |
| 916 | |
| 917 | |
| 918 | ;; The trigger function is suitable for use in the assoc GDB-ANNOTATION-RULES |
| 919 | ;; It adds an idle input for the command we are tracking. It should be the |
| 920 | ;; annotation rule binding of whatever gdb sends to tell us this command |
| 921 | ;; might have changed it's output. |
| 922 | ;; |
| 923 | ;; NAME is the fucntion name. DEMAND-PREDICATE tests if output is really needed. |
| 924 | ;; GDB-COMMAND is a string of such. OUTPUT-HANDLER is the function bound to the |
| 925 | ;; input in the input queue (see comment about ``gdb communications'' above). |
| 926 | (defmacro def-gdb-auto-update-trigger (name demand-predicate gdb-command output-handler) |
| 927 | (` |
| 928 | (defun (, name) (instance &optional ignored) |
| 929 | (if (and ((, demand-predicate) instance) |
| 930 | (not (member '(, name) |
| 931 | (gdb-instance-pending-triggers instance)))) |
| 932 | (progn |
| 933 | (gdb-instance-enqueue-idle-input |
| 934 | instance |
| 935 | (list (, gdb-command) '(, output-handler))) |
| 936 | (set-gdb-instance-pending-triggers |
| 937 | instance |
| 938 | (cons '(, name) |
| 939 | (gdb-instance-pending-triggers instance)))))))) |
| 940 | |
| 941 | (defmacro def-gdb-auto-update-handler (name trigger buf-key) |
| 942 | (` |
| 943 | (defun (, name) () |
| 944 | (set-gdb-instance-pending-triggers |
| 945 | instance |
| 946 | (delq '(, trigger) |
| 947 | (gdb-instance-pending-triggers instance))) |
| 948 | (let ((buf (gdb-get-instance-buffer instance |
| 949 | '(, buf-key)))) |
| 950 | (and buf |
| 951 | (save-excursion |
| 952 | (set-buffer buf) |
| 953 | (let ((p (point)) |
| 954 | (buffer-read-only nil)) |
| 955 | (delete-region (point-min) (point-max)) |
| 956 | (insert-buffer (gdb-get-create-instance-buffer |
| 957 | instance |
| 958 | 'gdb-partial-output-buffer)) |
| 959 | (goto-char p)))))))) |
| 960 | |
| 961 | (defmacro def-gdb-auto-updated-buffer |
| 962 | (buffer-key trigger-name gdb-command output-handler-name) |
| 963 | (` |
| 964 | (progn |
| 965 | (def-gdb-auto-update-trigger (, trigger-name) |
| 966 | ;; The demand predicate: |
| 967 | (lambda (instance) |
| 968 | (gdb-get-instance-buffer instance '(, buffer-key))) |
| 969 | (, gdb-command) |
| 970 | (, output-handler-name)) |
| 971 | (def-gdb-auto-update-handler (, output-handler-name) |
| 972 | (, trigger-name) (, buffer-key))))) |
| 973 | |
| 974 | |
| 975 | \f |
| 976 | ;; |
| 977 | ;; Breakpoint buffers |
| 978 | ;; |
| 979 | ;; These display the output of `info breakpoints'. |
| 980 | ;; |
| 981 | |
| 982 | |
| 983 | (gdb-set-instance-buffer-rules 'gdb-breakpoints-buffer |
| 984 | 'gdb-breakpoints-buffer-name |
| 985 | 'gud-breakpoints-mode) |
| 986 | |
| 987 | (def-gdb-auto-updated-buffer gdb-breakpoints-buffer |
| 988 | ;; This defines the auto update rule for buffers of type |
| 989 | ;; `gdb-breakpoints-buffer'. |
| 990 | ;; |
| 991 | ;; It defines a function to serve as the annotation handler that |
| 992 | ;; handles the `foo-invalidated' message. That function is called: |
| 993 | gdb-invalidate-breakpoints |
| 994 | |
| 995 | ;; To update the buffer, this command is sent to gdb. |
| 996 | "server info breakpoints\n" |
| 997 | |
| 998 | ;; This also defines a function to be the handler for the output |
| 999 | ;; from the command above. That function will copy the output into |
| 1000 | ;; the appropriately typed buffer. That function will be called: |
| 1001 | gdb-info-breakpoints-handler) |
| 1002 | |
| 1003 | (defun gdb-breakpoints-buffer-name (instance) |
| 1004 | (save-excursion |
| 1005 | (set-buffer (process-buffer (gdb-instance-process instance))) |
| 1006 | (concat "*breakpoints of " (gdb-instance-target-string instance) "*"))) |
| 1007 | |
| 1008 | (defun gud-display-breakpoints-buffer (instance) |
| 1009 | (interactive (list (gdb-needed-default-instance))) |
| 1010 | (gud-display-buffer |
| 1011 | (gdb-get-create-instance-buffer instance |
| 1012 | 'gdb-breakpoints-buffer))) |
| 1013 | |
| 1014 | (defun gud-frame-breakpoints-buffer (instance) |
| 1015 | (interactive (list (gdb-needed-default-instance))) |
| 1016 | (gud-frame-buffer |
| 1017 | (gdb-get-create-instance-buffer instance |
| 1018 | 'gdb-breakpoints-buffer))) |
| 1019 | |
| 1020 | (defvar gud-breakpoints-mode-map nil) |
| 1021 | (setq gud-breakpoints-mode-map (make-keymap)) |
| 1022 | (suppress-keymap gud-breakpoints-mode-map) |
| 1023 | (define-key gud-breakpoints-mode-map " " 'gud-toggle-bp-this-line) |
| 1024 | (define-key gud-breakpoints-mode-map "d" 'gud-delete-bp-this-line) |
| 1025 | |
| 1026 | (defun gud-breakpoints-mode () |
| 1027 | "Major mode for gud breakpoints. |
| 1028 | |
| 1029 | \\{gud-breakpoints-mode-map}" |
| 1030 | (setq major-mode 'gud-breakpoints-mode) |
| 1031 | (setq mode-name "Breakpoints") |
| 1032 | (use-local-map gud-breakpoints-mode-map) |
| 1033 | (setq buffer-read-only t) |
| 1034 | (gdb-invalidate-breakpoints gdb-buffer-instance)) |
| 1035 | |
| 1036 | (defun gud-toggle-bp-this-line () |
| 1037 | (interactive) |
| 1038 | (save-excursion |
| 1039 | (beginning-of-line 1) |
| 1040 | (if (not (looking-at "\\([0-9]*\\)\\s-*\\S-*\\s-*\\S-*\\s-*\\(.\\)")) |
| 1041 | (error "Not recognized as breakpoint line (demo foo).") |
| 1042 | (gdb-instance-enqueue-idle-input |
| 1043 | gdb-buffer-instance |
| 1044 | (list |
| 1045 | (concat |
| 1046 | (if (eq ?y (char-after (match-beginning 2))) |
| 1047 | "server disable " |
| 1048 | "server enable ") |
| 1049 | (buffer-substring (match-beginning 0) |
| 1050 | (match-end 1)) |
| 1051 | "\n") |
| 1052 | '(lambda () nil))) |
| 1053 | ))) |
| 1054 | |
| 1055 | (defun gud-delete-bp-this-line () |
| 1056 | (interactive) |
| 1057 | (save-excursion |
| 1058 | (beginning-of-line 1) |
| 1059 | (if (not (looking-at "\\([0-9]*\\)\\s-*\\S-*\\s-*\\S-*\\s-*\\(.\\)")) |
| 1060 | (error "Not recognized as breakpoint line (demo foo).") |
| 1061 | (gdb-instance-enqueue-idle-input |
| 1062 | gdb-buffer-instance |
| 1063 | (list |
| 1064 | (concat |
| 1065 | "server delete " |
| 1066 | (buffer-substring (match-beginning 0) |
| 1067 | (match-end 1)) |
| 1068 | "\n") |
| 1069 | '(lambda () nil))) |
| 1070 | ))) |
| 1071 | |
| 1072 | |
| 1073 | |
| 1074 | \f |
| 1075 | ;; |
| 1076 | ;; Frames buffers. These display a perpetually correct bactracktrace |
| 1077 | ;; (from the command `where'). |
| 1078 | ;; |
| 1079 | ;; Alas, if your stack is deep, they are costly. |
| 1080 | ;; |
| 1081 | |
| 1082 | (gdb-set-instance-buffer-rules 'gdb-stack-buffer |
| 1083 | 'gdb-stack-buffer-name |
| 1084 | 'gud-frames-mode) |
| 1085 | |
| 1086 | (def-gdb-auto-updated-buffer gdb-stack-buffer |
| 1087 | gdb-invalidate-frames |
| 1088 | "server where\n" |
| 1089 | gdb-info-frames-handler) |
| 1090 | |
| 1091 | (defun gdb-stack-buffer-name (instance) |
| 1092 | (save-excursion |
| 1093 | (set-buffer (process-buffer (gdb-instance-process instance))) |
| 1094 | (concat "*stack frames of " |
| 1095 | (gdb-instance-target-string instance) "*"))) |
| 1096 | |
| 1097 | (defun gud-display-stack-buffer (instance) |
| 1098 | (interactive (list (gdb-needed-default-instance))) |
| 1099 | (gud-display-buffer |
| 1100 | (gdb-get-create-instance-buffer instance |
| 1101 | 'gdb-stack-buffer))) |
| 1102 | |
| 1103 | (defun gud-frame-stack-buffer (instance) |
| 1104 | (interactive (list (gdb-needed-default-instance))) |
| 1105 | (gud-frame-buffer |
| 1106 | (gdb-get-create-instance-buffer instance |
| 1107 | 'gdb-stack-buffer))) |
| 1108 | |
| 1109 | (defvar gud-frames-mode-map nil) |
| 1110 | (setq gud-frames-mode-map (make-keymap)) |
| 1111 | (suppress-keymap gud-frames-mode-map) |
| 1112 | (define-key gud-frames-mode-map [mouse-2] |
| 1113 | 'gud-frames-select-by-mouse) |
| 1114 | |
| 1115 | (defun gud-frames-mode () |
| 1116 | "Major mode for gud frames. |
| 1117 | |
| 1118 | \\{gud-frames-mode-map}" |
| 1119 | (setq major-mode 'gud-frames-mode) |
| 1120 | (setq mode-name "Frames") |
| 1121 | (setq buffer-read-only t) |
| 1122 | (use-local-map gud-frames-mode-map) |
| 1123 | (gdb-invalidate-frames gdb-buffer-instance)) |
| 1124 | |
| 1125 | (defun gud-get-frame-number () |
| 1126 | (save-excursion |
| 1127 | (let* ((pos (re-search-backward "^#\\([0-9]*\\)" nil t)) |
| 1128 | (n (or (and pos |
| 1129 | (string-to-int |
| 1130 | (buffer-substring (match-beginning 1) |
| 1131 | (match-end 1)))) |
| 1132 | 0))) |
| 1133 | n))) |
| 1134 | |
| 1135 | (defun gud-frames-select-by-mouse (e) |
| 1136 | (interactive "e") |
| 1137 | (let (selection) |
| 1138 | (save-excursion |
| 1139 | (set-buffer (window-buffer (posn-window (event-end e)))) |
| 1140 | (save-excursion |
| 1141 | (goto-char (posn-point (event-end e))) |
| 1142 | (setq selection (gud-get-frame-number)))) |
| 1143 | (select-window (posn-window (event-end e))) |
| 1144 | (save-excursion |
| 1145 | (set-buffer (gdb-get-instance-buffer (gdb-needed-default-instance) 'gud)) |
| 1146 | (gud-call "fr %p" selection) |
| 1147 | (gud-display-frame)))) |
| 1148 | |
| 1149 | \f |
| 1150 | ;; |
| 1151 | ;; Registers buffers |
| 1152 | ;; |
| 1153 | |
| 1154 | (def-gdb-auto-updated-buffer gdb-registers-buffer |
| 1155 | gdb-invalidate-registers |
| 1156 | "server info registers\n" |
| 1157 | gdb-info-registers-handler) |
| 1158 | |
| 1159 | (gdb-set-instance-buffer-rules 'gdb-registers-buffer |
| 1160 | 'gdb-registers-buffer-name |
| 1161 | 'gud-registers-mode) |
| 1162 | |
| 1163 | (defvar gud-registers-mode-map nil) |
| 1164 | (setq gud-registers-mode-map (make-keymap)) |
| 1165 | (suppress-keymap gud-registers-mode-map) |
| 1166 | |
| 1167 | (defun gud-registers-mode () |
| 1168 | "Major mode for gud registers. |
| 1169 | |
| 1170 | \\{gud-registers-mode-map}" |
| 1171 | (setq major-mode 'gud-registers-mode) |
| 1172 | (setq mode-name "Registers") |
| 1173 | (setq buffer-read-only t) |
| 1174 | (use-local-map gud-registers-mode-map) |
| 1175 | (gdb-invalidate-registers gdb-buffer-instance)) |
| 1176 | |
| 1177 | (defun gdb-registers-buffer-name (instance) |
| 1178 | (save-excursion |
| 1179 | (set-buffer (process-buffer (gdb-instance-process instance))) |
| 1180 | (concat "*registers of " (gdb-instance-target-string instance) "*"))) |
| 1181 | |
| 1182 | (defun gud-display-registers-buffer (instance) |
| 1183 | (interactive (list (gdb-needed-default-instance))) |
| 1184 | (gud-display-buffer |
| 1185 | (gdb-get-create-instance-buffer instance |
| 1186 | 'gdb-registers-buffer))) |
| 1187 | |
| 1188 | (defun gud-frame-registers-buffer (instance) |
| 1189 | (interactive (list (gdb-needed-default-instance))) |
| 1190 | (gud-frame-buffer |
| 1191 | (gdb-get-create-instance-buffer instance |
| 1192 | 'gdb-registers-buffer))) |
| 1193 | |
| 1194 | \f |
| 1195 | |
| 1196 | ;;;; Menu windows: |
| 1197 | |
| 1198 | |
| 1199 | ;; MENU-LIST is ((option option option...) (option option ...)...) |
| 1200 | ;; |
| 1201 | (defun gud-display-menu (menu-list) |
| 1202 | (setq fill-column (min 120 (- (window-width) |
| 1203 | (min 8 (window-width))))) |
| 1204 | (while menu-list |
| 1205 | (mapcar (function (lambda (x) (insert (symbol-name x) " "))) (car menu-list)) |
| 1206 | (fill-paragraph nil) |
| 1207 | (insert "\n\n") |
| 1208 | (setq menu-list (cdr menu-list))) |
| 1209 | (goto-char (point-min)) |
| 1210 | (while (re-search-forward "\\([^ \n]+\\)\\(\n\\| \\)" nil t) |
| 1211 | (put-text-property (match-beginning 1) (match-end 1) |
| 1212 | 'mouse-face 'highlight)) |
| 1213 | (goto-char (point-min))) |
| 1214 | |
| 1215 | (defun gud-goto-menu (menu) |
| 1216 | (setq gud-menu-position menu) |
| 1217 | (let ((buffer-read-only nil)) |
| 1218 | (delete-region (point-min) (point-max)) |
| 1219 | (gud-display-menu menu))) |
| 1220 | |
| 1221 | (defun gud-menu-pick (event) |
| 1222 | "Choose an item from a gdb command menu." |
| 1223 | (interactive "e") |
| 1224 | (let (choice) |
| 1225 | (save-excursion |
| 1226 | (set-buffer (window-buffer (posn-window (event-start event)))) |
| 1227 | (goto-char (posn-point (event-start event))) |
| 1228 | (let (beg end) |
| 1229 | (skip-chars-forward "^ \t\n") |
| 1230 | (setq end (point)) |
| 1231 | (skip-chars-backward "^ \t\n") |
| 1232 | (setq beg (point)) |
| 1233 | (setq choice (buffer-substring beg end)) |
| 1234 | (message choice) |
| 1235 | (gud-invoke-menu (intern choice)))))) |
| 1236 | |
| 1237 | (defun gud-invoke-menu (symbol) |
| 1238 | (let ((meaning (assoc symbol gud-menu-rules))) |
| 1239 | (cond |
| 1240 | ((and (consp meaning) |
| 1241 | (consp (car (cdr meaning)))) |
| 1242 | (gud-goto-menu (car (cdr meaning)))) |
| 1243 | (meaning (call-interactively (car (cdr meaning))))))) |
| 1244 | |
| 1245 | \f |
| 1246 | |
| 1247 | (gdb-set-instance-buffer-rules 'gdb-command-buffer |
| 1248 | 'gdb-command-buffer-name |
| 1249 | 'gud-command-mode) |
| 1250 | |
| 1251 | (defvar gud-command-mode-map nil) |
| 1252 | (setq gud-command-mode-map (make-keymap)) |
| 1253 | (suppress-keymap gud-command-mode-map) |
| 1254 | (define-key gud-command-mode-map [mouse-2] 'gud-menu-pick) |
| 1255 | |
| 1256 | (defun gud-command-mode () |
| 1257 | "Major mode for gud menu. |
| 1258 | |
| 1259 | \\{gud-command-mode-map}" (interactive) (setq major-mode 'gud-command-mode) |
| 1260 | (setq mode-name "Menu") (setq buffer-read-only t) (use-local-map |
| 1261 | gud-command-mode-map) (make-variable-buffer-local 'gud-menu-position) |
| 1262 | (if (not gud-menu-position) (gud-goto-menu gud-running-menu))) |
| 1263 | |
| 1264 | (defun gdb-command-buffer-name (instance) |
| 1265 | (save-excursion |
| 1266 | (set-buffer (process-buffer (gdb-instance-process instance))) |
| 1267 | (concat "*menu of " (gdb-instance-target-string instance) "*"))) |
| 1268 | |
| 1269 | (defun gud-display-command-buffer (instance) |
| 1270 | (interactive (list (gdb-needed-default-instance))) |
| 1271 | (gud-display-buffer |
| 1272 | (gdb-get-create-instance-buffer instance |
| 1273 | 'gdb-command-buffer) |
| 1274 | 6)) |
| 1275 | |
| 1276 | (defun gud-frame-command-buffer (instance) |
| 1277 | (interactive (list (gdb-needed-default-instance))) |
| 1278 | (gud-frame-buffer |
| 1279 | (gdb-get-create-instance-buffer instance |
| 1280 | 'gdb-command-buffer))) |
| 1281 | |
| 1282 | (defvar gud-selected-menu-titles ()) |
| 1283 | (setq gud-selected-menu-titles |
| 1284 | '(RUNNING STACK DATA BREAKPOINTS FILES)) |
| 1285 | |
| 1286 | (setq gud-running-menu |
| 1287 | (list |
| 1288 | '(RUNNING stack breakpoints files) |
| 1289 | '(target run next step continue finish stepi kill help-running))) |
| 1290 | |
| 1291 | (setq gud-stack-menu |
| 1292 | (list |
| 1293 | '(running STACK breakpoints files) |
| 1294 | '(up down frame backtrace return help-stack))) |
| 1295 | |
| 1296 | (setq gud-data-menu |
| 1297 | (list |
| 1298 | '(running stack DATA breakpoints files) |
| 1299 | '(whatis ptype print set display undisplay disassemble help-data))) |
| 1300 | |
| 1301 | (setq gud-breakpoints-menu |
| 1302 | (list |
| 1303 | '(running stack BREAKPOINTS files) |
| 1304 | '(awatch rwatch watch break delete enable disable condition ignore help-breakpoints))) |
| 1305 | |
| 1306 | (setq gud-files-menu |
| 1307 | (list |
| 1308 | '(running stack breakpoints FILES) |
| 1309 | '(file core-file help-files) |
| 1310 | '(exec-file load symbol-file add-symbol-file sharedlibrary))) |
| 1311 | |
| 1312 | (setq gud-menu-rules |
| 1313 | (list |
| 1314 | (list 'running gud-running-menu) |
| 1315 | (list 'RUNNING gud-running-menu) |
| 1316 | (list 'stack gud-stack-menu) |
| 1317 | (list 'STACK gud-stack-menu) |
| 1318 | (list 'data gud-data-menu) |
| 1319 | (list 'DATA gud-data-menu) |
| 1320 | (list 'breakpoints gud-breakpoints-menu) |
| 1321 | (list 'BREAKPOINTS gud-breakpoints-menu) |
| 1322 | (list 'files gud-files-menu) |
| 1323 | (list 'FILES gud-files-menu) |
| 1324 | |
| 1325 | (list 'target 'gud-target) |
| 1326 | (list 'kill 'gud-kill) |
| 1327 | (list 'stepi 'gud-stepi) |
| 1328 | (list 'step 'gud-step) |
| 1329 | (list 'next 'gud-next) |
| 1330 | (list 'finish 'gud-finish) |
| 1331 | (list 'continue 'gud-cont) |
| 1332 | (list 'run 'gud-run) |
| 1333 | |
| 1334 | (list 'backtrace 'gud-backtrace) |
| 1335 | (list 'frame 'gud-frame) |
| 1336 | (list 'down 'gud-down) |
| 1337 | (list 'up 'gud-up) |
| 1338 | (list 'return 'gud-return) |
| 1339 | |
| 1340 | (list 'file 'gud-file) |
| 1341 | (list 'core-file 'gud-core-file) |
| 1342 | (list 'cd 'gud-cd) |
| 1343 | |
| 1344 | (list 'exec-file 'gud-exec-file) |
| 1345 | (list 'load 'gud-load) |
| 1346 | (list 'symbol-file 'gud-symbol-file) |
| 1347 | (list 'add-symbol-file 'gud-add-symbol-file) |
| 1348 | (list 'sharedlibrary 'gud-sharedlibrary) |
| 1349 | )) |
| 1350 | |
| 1351 | |
| 1352 | \f |
| 1353 | |
| 1354 | (defun gdb-call-showing-gud (instance command) |
| 1355 | (gud-display-gud-buffer instance) |
| 1356 | (comint-input-sender (gdb-instance-process instance) command)) |
| 1357 | |
| 1358 | (defvar gud-target-history ()) |
| 1359 | |
| 1360 | (defun gud-temp-buffer-show (buf) |
| 1361 | (let ((ow (selected-window))) |
| 1362 | (unwind-protect |
| 1363 | (progn |
| 1364 | (pop-to-buffer buf) |
| 1365 | |
| 1366 | ;; This insertion works around a bug in emacs. |
| 1367 | ;; The bug is that all the empty space after a |
| 1368 | ;; highlighted word that terminates a buffer |
| 1369 | ;; gets highlighted. That's really ugly, so |
| 1370 | ;; make sure a highlighted word can't ever |
| 1371 | ;; terminate the buffer. |
| 1372 | (goto-char (point-max)) |
| 1373 | (insert "\n") |
| 1374 | (goto-char (point-min)) |
| 1375 | |
| 1376 | (if (< (window-height) 10) |
| 1377 | (enlarge-window (- 10 (window-height))))) |
| 1378 | (select-window ow)))) |
| 1379 | |
| 1380 | (defun gud-target (instance command) |
| 1381 | (interactive |
| 1382 | (let* ((instance (gdb-needed-default-instance)) |
| 1383 | (temp-buffer-show-function (function gud-temp-buffer-show)) |
| 1384 | (target-name (completing-read (format "Target type: ") |
| 1385 | '(("remote") |
| 1386 | ("core") |
| 1387 | ("child") |
| 1388 | ("exec")) |
| 1389 | nil |
| 1390 | t |
| 1391 | nil |
| 1392 | 'gud-target-history))) |
| 1393 | (list instance |
| 1394 | (cond |
| 1395 | ((equal target-name "child") "run") |
| 1396 | |
| 1397 | ((equal target-name "core") |
| 1398 | (concat "target core " |
| 1399 | (read-file-name "core file: " |
| 1400 | nil |
| 1401 | "core" |
| 1402 | t))) |
| 1403 | |
| 1404 | ((equal target-name "exec") |
| 1405 | (concat "target exec " |
| 1406 | (read-file-name "exec file: " |
| 1407 | nil |
| 1408 | "a.out" |
| 1409 | t))) |
| 1410 | |
| 1411 | ((equal target-name "remote") |
| 1412 | (concat "target remote " |
| 1413 | (read-file-name "serial line for remote: " |
| 1414 | "/dev/" |
| 1415 | "ttya" |
| 1416 | t))) |
| 1417 | |
| 1418 | (t "echo No such target command!"))))) |
| 1419 | |
| 1420 | (gud-display-gud-buffer instance) |
| 1421 | (apply comint-input-sender |
| 1422 | (list (gdb-instance-process instance) command))) |
| 1423 | |
| 1424 | (defun gud-backtrace () |
| 1425 | (interactive) |
| 1426 | (let ((instance (gdb-needed-default-instance))) |
| 1427 | (gud-display-gud-buffer instance) |
| 1428 | (apply comint-input-sender |
| 1429 | (list (gdb-instance-process instance) |
| 1430 | "backtrace")))) |
| 1431 | |
| 1432 | (defun gud-frame () |
| 1433 | (interactive) |
| 1434 | (let ((instance (gdb-needed-default-instance))) |
| 1435 | (apply comint-input-sender |
| 1436 | (list (gdb-instance-process instance) |
| 1437 | "frame")))) |
| 1438 | |
| 1439 | (defun gud-return (instance command) |
| 1440 | (interactive |
| 1441 | (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| 1442 | (list (gdb-needed-default-instance) |
| 1443 | (concat "return " (read-string "Expression to return: "))))) |
| 1444 | (gud-display-gud-buffer instance) |
| 1445 | (apply comint-input-sender |
| 1446 | (list (gdb-instance-process instance) command))) |
| 1447 | |
| 1448 | |
| 1449 | (defun gud-file (instance command) |
| 1450 | (interactive |
| 1451 | (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| 1452 | (list (gdb-needed-default-instance) |
| 1453 | (concat "file " (read-file-name "Executable to debug: " |
| 1454 | nil |
| 1455 | "a.out" |
| 1456 | t))))) |
| 1457 | (gud-display-gud-buffer instance) |
| 1458 | (apply comint-input-sender |
| 1459 | (list (gdb-instance-process instance) command))) |
| 1460 | |
| 1461 | (defun gud-core-file (instance command) |
| 1462 | (interactive |
| 1463 | (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| 1464 | (list (gdb-needed-default-instance) |
| 1465 | (concat "core " (read-file-name "Core file to debug: " |
| 1466 | nil |
| 1467 | "core-file" |
| 1468 | t))))) |
| 1469 | (gud-display-gud-buffer instance) |
| 1470 | (apply comint-input-sender |
| 1471 | (list (gdb-instance-process instance) command))) |
| 1472 | |
| 1473 | (defun gud-cd (dir) |
| 1474 | (interactive "FChange GDB's default directory: ") |
| 1475 | (let ((instance (gdb-needed-default-instance))) |
| 1476 | (save-excursion |
| 1477 | (set-buffer (gdb-get-instance-buffer instance 'gud)) |
| 1478 | (cd dir)) |
| 1479 | (gud-display-gud-buffer instance) |
| 1480 | (apply comint-input-sender |
| 1481 | (list (gdb-instance-process instance) |
| 1482 | (concat "cd " dir))))) |
| 1483 | |
| 1484 | |
| 1485 | (defun gud-exec-file (instance command) |
| 1486 | (interactive |
| 1487 | (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| 1488 | (list (gdb-needed-default-instance) |
| 1489 | (concat "exec-file " (read-file-name "Init memory from executable: " |
| 1490 | nil |
| 1491 | "a.out" |
| 1492 | t))))) |
| 1493 | (gud-display-gud-buffer instance) |
| 1494 | (apply comint-input-sender |
| 1495 | (list (gdb-instance-process instance) command))) |
| 1496 | |
| 1497 | (defun gud-load (instance command) |
| 1498 | (interactive |
| 1499 | (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| 1500 | (list (gdb-needed-default-instance) |
| 1501 | (concat "load " (read-file-name "Dynamicly load from file: " |
| 1502 | nil |
| 1503 | "a.out" |
| 1504 | t))))) |
| 1505 | (gud-display-gud-buffer instance) |
| 1506 | (apply comint-input-sender |
| 1507 | (list (gdb-instance-process instance) command))) |
| 1508 | |
| 1509 | (defun gud-symbol-file (instance command) |
| 1510 | (interactive |
| 1511 | (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| 1512 | (list (gdb-needed-default-instance) |
| 1513 | (concat "symbol-file " (read-file-name "Read symbol table from file: " |
| 1514 | nil |
| 1515 | "a.out" |
| 1516 | t))))) |
| 1517 | (gud-display-gud-buffer instance) |
| 1518 | (apply comint-input-sender |
| 1519 | (list (gdb-instance-process instance) command))) |
| 1520 | |
| 1521 | |
| 1522 | (defun gud-add-symbol-file (instance command) |
| 1523 | (interactive |
| 1524 | (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| 1525 | (list (gdb-needed-default-instance) |
| 1526 | (concat "add-symbol-file " |
| 1527 | (read-file-name "Add symbols from file: " |
| 1528 | nil |
| 1529 | "a.out" |
| 1530 | t))))) |
| 1531 | (gud-display-gud-buffer instance) |
| 1532 | (apply comint-input-sender |
| 1533 | (list (gdb-instance-process instance) command))) |
| 1534 | |
| 1535 | |
| 1536 | (defun gud-sharedlibrary (instance command) |
| 1537 | (interactive |
| 1538 | (let ((temp-buffer-show-function (function gud-temp-buffer-show))) |
| 1539 | (list (gdb-needed-default-instance) |
| 1540 | (concat "sharedlibrary " |
| 1541 | (read-string "Load symbols for files matching regexp: "))))) |
| 1542 | (gud-display-gud-buffer instance) |
| 1543 | (apply comint-input-sender |
| 1544 | (list (gdb-instance-process instance) command))) |
| 1545 | |
| 1546 | |
| 1547 | |
| 1548 | \f |
| 1549 | |
| 1550 | ;;;; Window management |
| 1551 | |
| 1552 | |
| 1553 | ;;; FIXME: This should only return true for buffers in the current instance |
| 1554 | (defun gud-protected-buffer-p (buffer) |
| 1555 | "Is BUFFER a buffer which we want to leave displayed?" |
| 1556 | (save-excursion |
| 1557 | (set-buffer buffer) |
| 1558 | (or gdb-buffer-type |
| 1559 | overlay-arrow-position))) |
| 1560 | |
| 1561 | ;;; The way we abuse the dedicated-p flag is pretty gross, but seems |
| 1562 | ;;; to do the right thing. Seeing as there is no way for Lisp code to |
| 1563 | ;;; get at the use_time field of a window, I'm not sure there exists a |
| 1564 | ;;; more elegant solution without writing C code. |
| 1565 | |
| 1566 | (defun gud-display-buffer (buf &optional size) |
| 1567 | (let ((must-split nil) |
| 1568 | (answer nil)) |
| 1569 | (unwind-protect |
| 1570 | (progn |
| 1571 | (walk-windows |
| 1572 | '(lambda (win) |
| 1573 | (if (gud-protected-buffer-p (window-buffer win)) |
| 1574 | (set-window-dedicated-p win t)))) |
| 1575 | (setq answer (get-buffer-window buf)) |
| 1576 | (if (not answer) |
| 1577 | (let ((window (get-lru-window))) |
| 1578 | (if window |
| 1579 | (progn |
| 1580 | (set-window-buffer window buf) |
| 1581 | (setq answer window)) |
| 1582 | (setq must-split t))))) |
| 1583 | (walk-windows |
| 1584 | '(lambda (win) |
| 1585 | (if (gud-protected-buffer-p (window-buffer win)) |
| 1586 | (set-window-dedicated-p win nil))))) |
| 1587 | (if must-split |
| 1588 | (let* ((largest (get-largest-window)) |
| 1589 | (cur-size (window-height largest)) |
| 1590 | (new-size (and size (< size cur-size) (- cur-size size)))) |
| 1591 | (setq answer (split-window largest new-size)) |
| 1592 | (set-window-buffer answer buf))) |
| 1593 | answer)) |
| 1594 | |
| 1595 | (defun existing-source-window (buffer) |
| 1596 | (catch 'found |
| 1597 | (save-excursion |
| 1598 | (walk-windows |
| 1599 | (function |
| 1600 | (lambda (win) |
| 1601 | (if (and overlay-arrow-position |
| 1602 | (eq (window-buffer win) |
| 1603 | (marker-buffer overlay-arrow-position))) |
| 1604 | (progn |
| 1605 | (set-window-buffer win buffer) |
| 1606 | (throw 'found win)))))) |
| 1607 | nil))) |
| 1608 | |
| 1609 | (defun gud-display-source-buffer (buffer) |
| 1610 | (or (existing-source-window buffer) |
| 1611 | (gud-display-buffer buffer))) |
| 1612 | |
| 1613 | (defun gud-frame-buffer (buf) |
| 1614 | (save-excursion |
| 1615 | (set-buffer buf) |
| 1616 | (make-frame))) |
| 1617 | |
| 1618 | \f |
| 1619 | |
| 1620 | ;;; Shared keymap initialization: |
| 1621 | |
| 1622 | (defun make-windows-menu (map) |
| 1623 | (define-key map [menu-bar displays] |
| 1624 | (cons "GDB-Windows" (make-sparse-keymap "GDB-Windows"))) |
| 1625 | (define-key map [menu-bar displays gdb] |
| 1626 | '("Gdb" . gud-display-gud-buffer)) |
| 1627 | (define-key map [menu-bar displays registers] |
| 1628 | '("Registers" . gud-display-registers-buffer)) |
| 1629 | (define-key map [menu-bar displays frames] |
| 1630 | '("Stack" . gud-display-stack-buffer)) |
| 1631 | (define-key map [menu-bar displays breakpoints] |
| 1632 | '("Breakpoints" . gud-display-breakpoints-buffer)) |
| 1633 | (define-key map [menu-bar displays commands] |
| 1634 | '("Commands" . gud-display-command-buffer))) |
| 1635 | |
| 1636 | (defun gud-display-gud-buffer (instance) |
| 1637 | (interactive (list (gdb-needed-default-instance))) |
| 1638 | (gud-display-buffer |
| 1639 | (gdb-get-create-instance-buffer instance 'gud))) |
| 1640 | |
| 1641 | (make-windows-menu gud-breakpoints-mode-map) |
| 1642 | (make-windows-menu gud-frames-mode-map) |
| 1643 | (make-windows-menu gud-registers-mode-map) |
| 1644 | |
| 1645 | |
| 1646 | |
| 1647 | (defun make-frames-menu (map) |
| 1648 | (define-key map [menu-bar frames] |
| 1649 | (cons "GDB-Frames" (make-sparse-keymap "GDB-Frames"))) |
| 1650 | (define-key map [menu-bar frames gdb] |
| 1651 | '("Gdb" . gud-frame-gud-buffer)) |
| 1652 | (define-key map [menu-bar frames registers] |
| 1653 | '("Registers" . gud-frame-registers-buffer)) |
| 1654 | (define-key map [menu-bar frames frames] |
| 1655 | '("Stack" . gud-frame-stack-buffer)) |
| 1656 | (define-key map [menu-bar frames breakpoints] |
| 1657 | '("Breakpoints" . gud-frame-breakpoints-buffer)) |
| 1658 | (define-key map [menu-bar displays commands] |
| 1659 | '("Commands" . gud-display-command-buffer))) |
| 1660 | |
| 1661 | (defun gud-frame-gud-buffer (instance) |
| 1662 | (interactive (list (gdb-needed-default-instance))) |
| 1663 | (gud-frame-buffer |
| 1664 | (gdb-get-create-instance-buffer instance 'gud))) |
| 1665 | |
| 1666 | (make-frames-menu gud-breakpoints-mode-map) |
| 1667 | (make-frames-menu gud-frames-mode-map) |
| 1668 | (make-frames-menu gud-registers-mode-map) |
| 1669 | |
| 1670 | \f |
| 1671 | (defun gud-gdb-find-file (f) |
| 1672 | (find-file-noselect f)) |
| 1673 | |
| 1674 | ;;;###autoload |
| 1675 | (defun gdb (command-line) |
| 1676 | "Run gdb on program FILE in buffer *gud-FILE*. |
| 1677 | The directory containing FILE becomes the initial working directory |
| 1678 | and source-file directory for your debugger." |
| 1679 | (interactive |
| 1680 | (list (read-from-minibuffer "Run gdb (like this): " |
| 1681 | (if (consp gud-gdb-history) |
| 1682 | (car gud-gdb-history) |
| 1683 | "gdb ") |
| 1684 | nil nil |
| 1685 | '(gud-gdb-history . 1)))) |
| 1686 | (gud-overload-functions |
| 1687 | '((gud-massage-args . gud-gdb-massage-args) |
| 1688 | (gud-marker-filter . gud-gdb-marker-filter) |
| 1689 | (gud-find-file . gud-gdb-find-file) |
| 1690 | )) |
| 1691 | |
| 1692 | (let* ((words (gud-chop-words command-line)) |
| 1693 | (program (car words)) |
| 1694 | (file-word (let ((w (cdr words))) |
| 1695 | (while (and w (= ?- (aref (car w) 0))) |
| 1696 | (setq w (cdr w))) |
| 1697 | (car w))) |
| 1698 | (args (delq file-word (cdr words))) |
| 1699 | (file (expand-file-name file-word)) |
| 1700 | (filepart (file-name-nondirectory file)) |
| 1701 | (buffer-name (concat "*gud-" filepart "*"))) |
| 1702 | (setq gdb-first-time (not (get-buffer-process buffer-name)))) |
| 1703 | |
| 1704 | (gud-common-init command-line) |
| 1705 | |
| 1706 | (gud-def gud-break "break %f:%l" "\C-b" "Set breakpoint at current line.") |
| 1707 | (gud-def gud-tbreak "tbreak %f:%l" "\C-t" "Set breakpoint at current line.") |
| 1708 | (gud-def gud-remove "clear %l" "\C-d" "Remove breakpoint at current line") |
| 1709 | (gud-def gud-kill "kill" nil "Kill the program.") |
| 1710 | (gud-def gud-run "run" nil "Run the program.") |
| 1711 | (gud-def gud-stepi "stepi %p" "\C-i" "Step one instruction with display.") |
| 1712 | (gud-def gud-step "step %p" "\C-s" "Step one source line with display.") |
| 1713 | (gud-def gud-next "next %p" "\C-n" "Step one line (skip functions).") |
| 1714 | (gud-def gud-finish "finish" "\C-f" "Finish executing current function.") |
| 1715 | (gud-def gud-cont "cont" "\C-r" "Continue with display.") |
| 1716 | (gud-def gud-up "up %p" "<" "Up N stack frames (numeric arg).") |
| 1717 | (gud-def gud-down "down %p" ">" "Down N stack frames (numeric arg).") |
| 1718 | (gud-def gud-print "print %e" "\C-p" "Evaluate C expression at point.") |
| 1719 | |
| 1720 | (setq comint-prompt-regexp "^(.*gdb[+]?) *") |
| 1721 | (setq comint-input-sender 'gdb-send) |
| 1722 | (run-hooks 'gdb-mode-hook) |
| 1723 | (let ((instance |
| 1724 | (make-gdb-instance (get-buffer-process (current-buffer))) |
| 1725 | )) |
| 1726 | (if gdb-first-time (gdb-clear-inferior-io instance))) |
| 1727 | ) |
| 1728 | |
| 1729 | \f |
| 1730 | ;; ====================================================================== |
| 1731 | ;; sdb functions |
| 1732 | |
| 1733 | ;;; History of argument lists passed to sdb. |
| 1734 | (defvar gud-sdb-history nil) |
| 1735 | |
| 1736 | (defvar gud-sdb-needs-tags (not (file-exists-p "/var")) |
| 1737 | "If nil, we're on a System V Release 4 and don't need the tags hack.") |
| 1738 | |
| 1739 | (defvar gud-sdb-lastfile nil) |
| 1740 | |
| 1741 | (defun gud-sdb-massage-args (file args) |
| 1742 | (cons file args)) |
| 1743 | |
| 1744 | (defun gud-sdb-marker-filter (string) |
| 1745 | (cond |
| 1746 | ;; System V Release 3.2 uses this format |
| 1747 | ((string-match "\\(^0x\\w* in \\|^\\|\n\\)\\([^:\n]*\\):\\([0-9]*\\):.*\n" |
| 1748 | string) |
| 1749 | (setq gud-last-frame |
| 1750 | (cons |
| 1751 | (substring string (match-beginning 2) (match-end 2)) |
| 1752 | (string-to-int |
| 1753 | (substring string (match-beginning 3) (match-end 3)))))) |
| 1754 | ;; System V Release 4.0 |
| 1755 | ((string-match "^\\(BREAKPOINT\\|STEPPED\\) process [0-9]+ function [^ ]+ in \\(.+\\)\n" |
| 1756 | string) |
| 1757 | (setq gud-sdb-lastfile |
| 1758 | (substring string (match-beginning 2) (match-end 2)))) |
| 1759 | ((and gud-sdb-lastfile (string-match "^\\([0-9]+\\):" string)) |
| 1760 | (setq gud-last-frame |
| 1761 | (cons |
| 1762 | gud-sdb-lastfile |
| 1763 | (string-to-int |
| 1764 | (substring string (match-beginning 1) (match-end 1)))))) |
| 1765 | (t |
| 1766 | (setq gud-sdb-lastfile nil))) |
| 1767 | string) |
| 1768 | |
| 1769 | (defun gud-sdb-find-file (f) |
| 1770 | (if gud-sdb-needs-tags |
| 1771 | (find-tag-noselect f) |
| 1772 | (find-file-noselect f))) |
| 1773 | |
| 1774 | ;;;###autoload |
| 1775 | (defun sdb (command-line) |
| 1776 | "Run sdb on program FILE in buffer *gud-FILE*. |
| 1777 | The directory containing FILE becomes the initial working directory |
| 1778 | and source-file directory for your debugger." |
| 1779 | (interactive |
| 1780 | (list (read-from-minibuffer "Run sdb (like this): " |
| 1781 | (if (consp gud-sdb-history) |
| 1782 | (car gud-sdb-history) |
| 1783 | "sdb ") |
| 1784 | nil nil |
| 1785 | '(gud-sdb-history . 1)))) |
| 1786 | (if (and gud-sdb-needs-tags |
| 1787 | (not (and (boundp 'tags-file-name) (file-exists-p tags-file-name)))) |
| 1788 | (error "The sdb support requires a valid tags table to work.")) |
| 1789 | (gud-overload-functions '((gud-massage-args . gud-sdb-massage-args) |
| 1790 | (gud-marker-filter . gud-sdb-marker-filter) |
| 1791 | (gud-find-file . gud-sdb-find-file) |
| 1792 | )) |
| 1793 | |
| 1794 | (gud-common-init command-line) |
| 1795 | |
| 1796 | (gud-def gud-break "%l b" "\C-b" "Set breakpoint at current line.") |
| 1797 | (gud-def gud-tbreak "%l c" "\C-t" "Set temporary breakpoint at current line.") |
| 1798 | (gud-def gud-remove "%l d" "\C-d" "Remove breakpoint at current line") |
| 1799 | (gud-def gud-step "s %p" "\C-s" "Step one source line with display.") |
| 1800 | (gud-def gud-stepi "i %p" "\C-i" "Step one instruction with display.") |
| 1801 | (gud-def gud-next "S %p" "\C-n" "Step one line (skip functions).") |
| 1802 | (gud-def gud-cont "c" "\C-r" "Continue with display.") |
| 1803 | (gud-def gud-print "%e/" "\C-p" "Evaluate C expression at point.") |
| 1804 | |
| 1805 | (setq comint-prompt-regexp "\\(^\\|\n\\)\\*") |
| 1806 | (run-hooks 'sdb-mode-hook) |
| 1807 | ) |
| 1808 | \f |
| 1809 | ;; ====================================================================== |
| 1810 | ;; dbx functions |
| 1811 | |
| 1812 | ;;; History of argument lists passed to dbx. |
| 1813 | (defvar gud-dbx-history nil) |
| 1814 | |
| 1815 | (defun gud-dbx-massage-args (file args) |
| 1816 | (cons file args)) |
| 1817 | |
| 1818 | (defun gud-dbx-marker-filter (string) |
| 1819 | (if (or (string-match |
| 1820 | "stopped in .* at line \\([0-9]*\\) in file \"\\([^\"]*\\)\"" |
| 1821 | string) |
| 1822 | (string-match |
| 1823 | "signal .* in .* at line \\([0-9]*\\) in file \"\\([^\"]*\\)\"" |
| 1824 | string)) |
| 1825 | (setq gud-last-frame |
| 1826 | (cons |
| 1827 | (substring string (match-beginning 2) (match-end 2)) |
| 1828 | (string-to-int |
| 1829 | (substring string (match-beginning 1) (match-end 1)))))) |
| 1830 | string) |
| 1831 | |
| 1832 | (defun gud-dbx-find-file (f) |
| 1833 | (find-file-noselect f)) |
| 1834 | |
| 1835 | ;;;###autoload |
| 1836 | (defun dbx (command-line) |
| 1837 | "Run dbx on program FILE in buffer *gud-FILE*. |
| 1838 | The directory containing FILE becomes the initial working directory |
| 1839 | and source-file directory for your debugger." |
| 1840 | (interactive |
| 1841 | (list (read-from-minibuffer "Run dbx (like this): " |
| 1842 | (if (consp gud-dbx-history) |
| 1843 | (car gud-dbx-history) |
| 1844 | "dbx ") |
| 1845 | nil nil |
| 1846 | '(gud-dbx-history . 1)))) |
| 1847 | (gud-overload-functions '((gud-massage-args . gud-dbx-massage-args) |
| 1848 | (gud-marker-filter . gud-dbx-marker-filter) |
| 1849 | (gud-find-file . gud-dbx-find-file) |
| 1850 | )) |
| 1851 | |
| 1852 | (gud-common-init command-line) |
| 1853 | |
| 1854 | (gud-def gud-break "file \"%d%f\"\nstop at %l" |
| 1855 | "\C-b" "Set breakpoint at current line.") |
| 1856 | ;; (gud-def gud-break "stop at \"%f\":%l" |
| 1857 | ;; "\C-b" "Set breakpoint at current line.") |
| 1858 | (gud-def gud-remove "clear %l" "\C-d" "Remove breakpoint at current line") |
| 1859 | (gud-def gud-step "step %p" "\C-s" "Step one line with display.") |
| 1860 | (gud-def gud-stepi "stepi %p" "\C-i" "Step one instruction with display.") |
| 1861 | (gud-def gud-next "next %p" "\C-n" "Step one line (skip functions).") |
| 1862 | (gud-def gud-cont "cont" "\C-r" "Continue with display.") |
| 1863 | (gud-def gud-up "up %p" "<" "Up (numeric arg) stack frames.") |
| 1864 | (gud-def gud-down "down %p" ">" "Down (numeric arg) stack frames.") |
| 1865 | (gud-def gud-print "print %e" "\C-p" "Evaluate C expression at point.") |
| 1866 | |
| 1867 | (setq comint-prompt-regexp "^[^)]*dbx) *") |
| 1868 | (run-hooks 'dbx-mode-hook) |
| 1869 | ) |
| 1870 | \f |
| 1871 | ;; ====================================================================== |
| 1872 | ;; xdb (HP PARISC debugger) functions |
| 1873 | |
| 1874 | ;;; History of argument lists passed to xdb. |
| 1875 | (defvar gud-xdb-history nil) |
| 1876 | |
| 1877 | (defvar gud-xdb-directories nil |
| 1878 | "*A list of directories that xdb should search for source code. |
| 1879 | If nil, only source files in the program directory |
| 1880 | will be known to xdb. |
| 1881 | |
| 1882 | The file names should be absolute, or relative to the directory |
| 1883 | containing the executable being debugged.") |
| 1884 | |
| 1885 | (defun gud-xdb-massage-args (file args) |
| 1886 | (nconc (let ((directories gud-xdb-directories) |
| 1887 | (result nil)) |
| 1888 | (while directories |
| 1889 | (setq result (cons (car directories) (cons "-d" result))) |
| 1890 | (setq directories (cdr directories))) |
| 1891 | (nreverse (cons file result))) |
| 1892 | args)) |
| 1893 | |
| 1894 | (defun gud-xdb-file-name (f) |
| 1895 | "Transform a relative pathname to a full pathname in xdb mode" |
| 1896 | (let ((result nil)) |
| 1897 | (if (file-exists-p f) |
| 1898 | (setq result (expand-file-name f)) |
| 1899 | (let ((directories gud-xdb-directories)) |
| 1900 | (while directories |
| 1901 | (let ((path (concat (car directories) "/" f))) |
| 1902 | (if (file-exists-p path) |
| 1903 | (setq result (expand-file-name path) |
| 1904 | directories nil))) |
| 1905 | (setq directories (cdr directories))))) |
| 1906 | result)) |
| 1907 | |
| 1908 | ;; xdb does not print the lines all at once, so we have to accumulate them |
| 1909 | (defvar gud-xdb-accumulation "") |
| 1910 | |
| 1911 | (defun gud-xdb-marker-filter (string) |
| 1912 | (let (result) |
| 1913 | (if (or (string-match comint-prompt-regexp string) |
| 1914 | (string-match ".*\012" string)) |
| 1915 | (setq result (concat gud-xdb-accumulation string) |
| 1916 | gud-xdb-accumulation "") |
| 1917 | (setq gud-xdb-accumulation (concat gud-xdb-accumulation string))) |
| 1918 | (if result |
| 1919 | (if (or (string-match "\\([^\n \t:]+\\): [^:]+: \\([0-9]+\\):" result) |
| 1920 | (string-match "[^: \t]+:[ \t]+\\([^:]+\\): [^:]+: \\([0-9]+\\):" |
| 1921 | result)) |
| 1922 | (let ((line (string-to-int |
| 1923 | (substring result (match-beginning 2) (match-end 2)))) |
| 1924 | (file (gud-xdb-file-name |
| 1925 | (substring result (match-beginning 1) (match-end 1))))) |
| 1926 | (if file |
| 1927 | (setq gud-last-frame (cons file line)))))) |
| 1928 | (or result ""))) |
| 1929 | |
| 1930 | (defun gud-xdb-find-file (f) |
| 1931 | (let ((realf (gud-xdb-file-name f))) |
| 1932 | (if realf (find-file-noselect realf)))) |
| 1933 | |
| 1934 | ;;;###autoload |
| 1935 | (defun xdb (command-line) |
| 1936 | "Run xdb on program FILE in buffer *gud-FILE*. |
| 1937 | The directory containing FILE becomes the initial working directory |
| 1938 | and source-file directory for your debugger. |
| 1939 | |
| 1940 | You can set the variable 'gud-xdb-directories' to a list of program source |
| 1941 | directories if your program contains sources from more than one directory." |
| 1942 | (interactive |
| 1943 | (list (read-from-minibuffer "Run xdb (like this): " |
| 1944 | (if (consp gud-xdb-history) |
| 1945 | (car gud-xdb-history) |
| 1946 | "xdb ") |
| 1947 | nil nil |
| 1948 | '(gud-xdb-history . 1)))) |
| 1949 | (gud-overload-functions '((gud-massage-args . gud-xdb-massage-args) |
| 1950 | (gud-marker-filter . gud-xdb-marker-filter) |
| 1951 | (gud-find-file . gud-xdb-find-file))) |
| 1952 | |
| 1953 | (gud-common-init command-line) |
| 1954 | |
| 1955 | (gud-def gud-break "b %f:%l" "\C-b" "Set breakpoint at current line.") |
| 1956 | (gud-def gud-tbreak "b %f:%l\\t" "\C-t" |
| 1957 | "Set temporary breakpoint at current line.") |
| 1958 | (gud-def gud-remove "db" "\C-d" "Remove breakpoint at current line") |
| 1959 | (gud-def gud-step "s %p" "\C-s" "Step one line with display.") |
| 1960 | (gud-def gud-next "S %p" "\C-n" "Step one line (skip functions).") |
| 1961 | (gud-def gud-cont "c" "\C-r" "Continue with display.") |
| 1962 | (gud-def gud-up "up %p" "<" "Up (numeric arg) stack frames.") |
| 1963 | (gud-def gud-down "down %p" ">" "Down (numeric arg) stack frames.") |
| 1964 | (gud-def gud-finish "bu\\t" "\C-f" "Finish executing current function.") |
| 1965 | (gud-def gud-print "p %e" "\C-p" "Evaluate C expression at point.") |
| 1966 | |
| 1967 | (setq comint-prompt-regexp "^>") |
| 1968 | (make-local-variable 'gud-xdb-accumulation) |
| 1969 | (setq gud-xdb-accumulation "") |
| 1970 | (run-hooks 'xdb-mode-hook)) |
| 1971 | \f |
| 1972 | ;; ====================================================================== |
| 1973 | ;; perldb functions |
| 1974 | |
| 1975 | ;;; History of argument lists passed to perldb. |
| 1976 | (defvar gud-perldb-history nil) |
| 1977 | |
| 1978 | (defun gud-perldb-massage-args (file args) |
| 1979 | (cons "-d" (cons file (cons "-emacs" args)))) |
| 1980 | |
| 1981 | ;; There's no guarantee that Emacs will hand the filter the entire |
| 1982 | ;; marker at once; it could be broken up across several strings. We |
| 1983 | ;; might even receive a big chunk with several markers in it. If we |
| 1984 | ;; receive a chunk of text which looks like it might contain the |
| 1985 | ;; beginning of a marker, we save it here between calls to the |
| 1986 | ;; filter. |
| 1987 | (defvar gud-perldb-marker-acc "") |
| 1988 | |
| 1989 | (defun gud-perldb-marker-filter (string) |
| 1990 | (save-match-data |
| 1991 | (setq gud-perldb-marker-acc (concat gud-perldb-marker-acc string)) |
| 1992 | (let ((output "")) |
| 1993 | |
| 1994 | ;; Process all the complete markers in this chunk. |
| 1995 | (while (string-match "^\032\032\\([^:\n]*\\):\\([0-9]*\\):.*\n" |
| 1996 | gud-perldb-marker-acc) |
| 1997 | (setq |
| 1998 | |
| 1999 | ;; Extract the frame position from the marker. |
| 2000 | gud-last-frame |
| 2001 | (cons (substring gud-perldb-marker-acc (match-beginning 1) (match-end 1)) |
| 2002 | (string-to-int (substring gud-perldb-marker-acc |
| 2003 | (match-beginning 2) |
| 2004 | (match-end 2)))) |
| 2005 | |
| 2006 | ;; Append any text before the marker to the output we're going |
| 2007 | ;; to return - we don't include the marker in this text. |
| 2008 | output (concat output |
| 2009 | (substring gud-perldb-marker-acc 0 (match-beginning 0))) |
| 2010 | |
| 2011 | ;; Set the accumulator to the remaining text. |
| 2012 | gud-perldb-marker-acc (substring gud-perldb-marker-acc (match-end 0)))) |
| 2013 | |
| 2014 | ;; Does the remaining text look like it might end with the |
| 2015 | ;; beginning of another marker? If it does, then keep it in |
| 2016 | ;; gud-perldb-marker-acc until we receive the rest of it. Since we |
| 2017 | ;; know the full marker regexp above failed, it's pretty simple to |
| 2018 | ;; test for marker starts. |
| 2019 | (if (string-match "^\032.*\\'" gud-perldb-marker-acc) |
| 2020 | (progn |
| 2021 | ;; Everything before the potential marker start can be output. |
| 2022 | (setq output (concat output (substring gud-perldb-marker-acc |
| 2023 | 0 (match-beginning 0)))) |
| 2024 | |
| 2025 | ;; Everything after, we save, to combine with later input. |
| 2026 | (setq gud-perldb-marker-acc |
| 2027 | (substring gud-perldb-marker-acc (match-beginning 0)))) |
| 2028 | |
| 2029 | (setq output (concat output gud-perldb-marker-acc) |
| 2030 | gud-perldb-marker-acc "")) |
| 2031 | |
| 2032 | output))) |
| 2033 | |
| 2034 | (defun gud-perldb-find-file (f) |
| 2035 | (find-file-noselect f)) |
| 2036 | |
| 2037 | ;;;###autoload |
| 2038 | (defun perldb (command-line) |
| 2039 | "Run perldb on program FILE in buffer *gud-FILE*. |
| 2040 | The directory containing FILE becomes the initial working directory |
| 2041 | and source-file directory for your debugger." |
| 2042 | (interactive |
| 2043 | (list (read-from-minibuffer "Run perldb (like this): " |
| 2044 | (if (consp gud-perldb-history) |
| 2045 | (car gud-perldb-history) |
| 2046 | "perl ") |
| 2047 | nil nil |
| 2048 | '(gud-perldb-history . 1)))) |
| 2049 | (gud-overload-functions '((gud-massage-args . gud-perldb-massage-args) |
| 2050 | (gud-marker-filter . gud-perldb-marker-filter) |
| 2051 | (gud-find-file . gud-perldb-find-file) |
| 2052 | )) |
| 2053 | |
| 2054 | (gud-common-init command-line) |
| 2055 | |
| 2056 | (gud-def gud-break "b %l" "\C-b" "Set breakpoint at current line.") |
| 2057 | (gud-def gud-remove "d %l" "\C-d" "Remove breakpoint at current line") |
| 2058 | (gud-def gud-step "s" "\C-s" "Step one source line with display.") |
| 2059 | (gud-def gud-next "n" "\C-n" "Step one line (skip functions).") |
| 2060 | (gud-def gud-cont "c" "\C-r" "Continue with display.") |
| 2061 | ; (gud-def gud-finish "finish" "\C-f" "Finish executing current function.") |
| 2062 | ; (gud-def gud-up "up %p" "<" "Up N stack frames (numeric arg).") |
| 2063 | ; (gud-def gud-down "down %p" ">" "Down N stack frames (numeric arg).") |
| 2064 | (gud-def gud-print "%e" "\C-p" "Evaluate perl expression at point.") |
| 2065 | |
| 2066 | (setq comint-prompt-regexp "^ DB<[0-9]+> ") |
| 2067 | (run-hooks 'perldb-mode-hook) |
| 2068 | ) |
| 2069 | |
| 2070 | ;; |
| 2071 | ;; End of debugger-specific information |
| 2072 | ;; |
| 2073 | |
| 2074 | \f |
| 2075 | ;;; When we send a command to the debugger via gud-call, it's annoying |
| 2076 | ;;; to see the command and the new prompt inserted into the debugger's |
| 2077 | ;;; buffer; we have other ways of knowing the command has completed. |
| 2078 | ;;; |
| 2079 | ;;; If the buffer looks like this: |
| 2080 | ;;; -------------------- |
| 2081 | ;;; (gdb) set args foo bar |
| 2082 | ;;; (gdb) -!- |
| 2083 | ;;; -------------------- |
| 2084 | ;;; (the -!- marks the location of point), and we type `C-x SPC' in a |
| 2085 | ;;; source file to set a breakpoint, we want the buffer to end up like |
| 2086 | ;;; this: |
| 2087 | ;;; -------------------- |
| 2088 | ;;; (gdb) set args foo bar |
| 2089 | ;;; Breakpoint 1 at 0x92: file make-docfile.c, line 49. |
| 2090 | ;;; (gdb) -!- |
| 2091 | ;;; -------------------- |
| 2092 | ;;; Essentially, the old prompt is deleted, and the command's output |
| 2093 | ;;; and the new prompt take its place. |
| 2094 | ;;; |
| 2095 | ;;; Not echoing the command is easy enough; you send it directly using |
| 2096 | ;;; comint-input-sender, and it never enters the buffer. However, |
| 2097 | ;;; getting rid of the old prompt is trickier; you don't want to do it |
| 2098 | ;;; when you send the command, since that will result in an annoying |
| 2099 | ;;; flicker as the prompt is deleted, redisplay occurs while Emacs |
| 2100 | ;;; waits for a response from the debugger, and the new prompt is |
| 2101 | ;;; inserted. Instead, we'll wait until we actually get some output |
| 2102 | ;;; from the subprocess before we delete the prompt. If the command |
| 2103 | ;;; produced no output other than a new prompt, that prompt will most |
| 2104 | ;;; likely be in the first chunk of output received, so we will delete |
| 2105 | ;;; the prompt and then replace it with an identical one. If the |
| 2106 | ;;; command produces output, the prompt is moving anyway, so the |
| 2107 | ;;; flicker won't be annoying. |
| 2108 | ;;; |
| 2109 | ;;; So - when we want to delete the prompt upon receipt of the next |
| 2110 | ;;; chunk of debugger output, we position gud-delete-prompt-marker at |
| 2111 | ;;; the start of the prompt; the process filter will notice this, and |
| 2112 | ;;; delete all text between it and the process output marker. If |
| 2113 | ;;; gud-delete-prompt-marker points nowhere, we leave the current |
| 2114 | ;;; prompt alone. |
| 2115 | (defvar gud-delete-prompt-marker nil) |
| 2116 | |
| 2117 | \f |
| 2118 | (defvar gdbish-comint-mode-map (copy-keymap comint-mode-map)) |
| 2119 | (define-key gdbish-comint-mode-map "\C-c\M-\C-r" 'gud-display-registers-buffer) |
| 2120 | (define-key gdbish-comint-mode-map "\C-c\M-\C-f" 'gud-display-stack-buffer) |
| 2121 | (define-key gdbish-comint-mode-map "\C-c\M-\C-b" 'gud-display-breakpoints-buffer) |
| 2122 | |
| 2123 | (make-windows-menu gdbish-comint-mode-map) |
| 2124 | (make-frames-menu gdbish-comint-mode-map) |
| 2125 | |
| 2126 | (defun gud-mode () |
| 2127 | "Major mode for interacting with an inferior debugger process. |
| 2128 | |
| 2129 | You start it up with one of the commands M-x gdb, M-x sdb, M-x dbx, |
| 2130 | or M-x xdb. Each entry point finishes by executing a hook; `gdb-mode-hook', |
| 2131 | `sdb-mode-hook', `dbx-mode-hook' or `xdb-mode-hook' respectively. |
| 2132 | |
| 2133 | After startup, the following commands are available in both the GUD |
| 2134 | interaction buffer and any source buffer GUD visits due to a breakpoint stop |
| 2135 | or step operation: |
| 2136 | |
| 2137 | \\[gud-break] sets a breakpoint at the current file and line. In the |
| 2138 | GUD buffer, the current file and line are those of the last breakpoint or |
| 2139 | step. In a source buffer, they are the buffer's file and current line. |
| 2140 | |
| 2141 | \\[gud-remove] removes breakpoints on the current file and line. |
| 2142 | |
| 2143 | \\[gud-refresh] displays in the source window the last line referred to |
| 2144 | in the gud buffer. |
| 2145 | |
| 2146 | \\[gud-step], \\[gud-next], and \\[gud-stepi] do a step-one-line, |
| 2147 | step-one-line (not entering function calls), and step-one-instruction |
| 2148 | and then update the source window with the current file and position. |
| 2149 | \\[gud-cont] continues execution. |
| 2150 | |
| 2151 | \\[gud-print] tries to find the largest C lvalue or function-call expression |
| 2152 | around point, and sends it to the debugger for value display. |
| 2153 | |
| 2154 | The above commands are common to all supported debuggers except xdb which |
| 2155 | does not support stepping instructions. |
| 2156 | |
| 2157 | Under gdb, sdb and xdb, \\[gud-tbreak] behaves exactly like \\[gud-break], |
| 2158 | except that the breakpoint is temporary; that is, it is removed when |
| 2159 | execution stops on it. |
| 2160 | |
| 2161 | Under gdb, dbx, and xdb, \\[gud-up] pops up through an enclosing stack |
| 2162 | frame. \\[gud-down] drops back down through one. |
| 2163 | |
| 2164 | If you are using gdb or xdb, \\[gud-finish] runs execution to the return from |
| 2165 | the current function and stops. |
| 2166 | |
| 2167 | All the keystrokes above are accessible in the GUD buffer |
| 2168 | with the prefix C-c, and in all buffers through the prefix C-x C-a. |
| 2169 | |
| 2170 | All pre-defined functions for which the concept make sense repeat |
| 2171 | themselves the appropriate number of times if you give a prefix |
| 2172 | argument. |
| 2173 | |
| 2174 | You may use the `gud-def' macro in the initialization hook to define other |
| 2175 | commands. |
| 2176 | |
| 2177 | Other commands for interacting with the debugger process are inherited from |
| 2178 | comint mode, which see." |
| 2179 | (interactive) |
| 2180 | (comint-mode) |
| 2181 | (setq major-mode 'gud-mode) |
| 2182 | (setq mode-name "Debugger") |
| 2183 | (setq mode-line-process '(": %s")) |
| 2184 | (use-local-map (copy-keymap gdbish-comint-mode-map)) |
| 2185 | (setq gud-last-frame nil) |
| 2186 | (make-local-variable 'comint-prompt-regexp) |
| 2187 | (make-local-variable 'gud-delete-prompt-marker) |
| 2188 | (setq gud-delete-prompt-marker (make-marker)) |
| 2189 | (run-hooks 'gud-mode-hook) |
| 2190 | ) |
| 2191 | |
| 2192 | (defvar gud-comint-buffer nil) |
| 2193 | |
| 2194 | ;; Chop STRING into words separated by SPC or TAB and return a list of them. |
| 2195 | (defun gud-chop-words (string) |
| 2196 | (let ((i 0) (beg 0) |
| 2197 | (len (length string)) |
| 2198 | (words nil)) |
| 2199 | (while (< i len) |
| 2200 | (if (memq (aref string i) '(?\t ? )) |
| 2201 | (progn |
| 2202 | (setq words (cons (substring string beg i) words) |
| 2203 | beg (1+ i)) |
| 2204 | (while (and (< beg len) (memq (aref string beg) '(?\t ? ))) |
| 2205 | (setq beg (1+ beg))) |
| 2206 | (setq i (1+ beg))) |
| 2207 | (setq i (1+ i)))) |
| 2208 | (if (< beg len) |
| 2209 | (setq words (cons (substring string beg) words))) |
| 2210 | (nreverse words))) |
| 2211 | |
| 2212 | (defvar gud-target-name "--unknown--" |
| 2213 | "The apparent name of the program being debugged in a gud buffer. |
| 2214 | For sure this the root string used in smashing together the gud |
| 2215 | buffer's name, even if that doesn't happen to be the name of a |
| 2216 | program.") |
| 2217 | |
| 2218 | ;; Perform initializations common to all debuggers. |
| 2219 | (defun gud-common-init (command-line) |
| 2220 | (let* ((words (gud-chop-words command-line)) |
| 2221 | (program (car words)) |
| 2222 | (file-word (let ((w (cdr words))) |
| 2223 | (while (and w (= ?- (aref (car w) 0))) |
| 2224 | (setq w (cdr w))) |
| 2225 | (car w))) |
| 2226 | (args (delq file-word (cdr words))) |
| 2227 | (file (expand-file-name file-word)) |
| 2228 | (filepart (file-name-nondirectory file)) |
| 2229 | (buffer-name (concat "*gud-" filepart "*"))) |
| 2230 | (switch-to-buffer buffer-name) |
| 2231 | (setq default-directory (file-name-directory file)) |
| 2232 | (or (bolp) (newline)) |
| 2233 | (insert "Current directory is " default-directory "\n") |
| 2234 | (let ((old-instance gdb-buffer-instance)) |
| 2235 | (apply 'make-comint (concat "gud-" filepart) program nil |
| 2236 | (gud-massage-args file args)) |
| 2237 | (gud-mode) |
| 2238 | (make-variable-buffer-local 'old-gdb-buffer-instance) |
| 2239 | (setq old-gdb-buffer-instance old-instance)) |
| 2240 | (make-variable-buffer-local 'gud-target-name) |
| 2241 | (setq gud-target-name filepart)) |
| 2242 | (set-process-filter (get-buffer-process (current-buffer)) 'gud-filter) |
| 2243 | (set-process-sentinel (get-buffer-process (current-buffer)) 'gud-sentinel) |
| 2244 | (gud-set-buffer) |
| 2245 | ) |
| 2246 | |
| 2247 | (defun gud-set-buffer () |
| 2248 | (cond ((eq major-mode 'gud-mode) |
| 2249 | (setq gud-comint-buffer (current-buffer))))) |
| 2250 | |
| 2251 | ;; These functions are responsible for inserting output from your debugger |
| 2252 | ;; into the buffer. The hard work is done by the method that is |
| 2253 | ;; the value of gud-marker-filter. |
| 2254 | |
| 2255 | (defun gud-filter (proc string) |
| 2256 | ;; Here's where the actual buffer insertion is done |
| 2257 | (let ((inhibit-quit t)) |
| 2258 | (save-excursion |
| 2259 | (set-buffer (process-buffer proc)) |
| 2260 | (let (moving output-after-point) |
| 2261 | (save-excursion |
| 2262 | (goto-char (process-mark proc)) |
| 2263 | ;; If we have been so requested, delete the debugger prompt. |
| 2264 | (if (marker-buffer gud-delete-prompt-marker) |
| 2265 | (progn |
| 2266 | (delete-region (point) gud-delete-prompt-marker) |
| 2267 | (set-marker gud-delete-prompt-marker nil))) |
| 2268 | (insert-before-markers (gud-marker-filter string)) |
| 2269 | (setq moving (= (point) (process-mark proc))) |
| 2270 | (setq output-after-point (< (point) (process-mark proc))) |
| 2271 | ;; Check for a filename-and-line number. |
| 2272 | ;; Don't display the specified file |
| 2273 | ;; unless (1) point is at or after the position where output appears |
| 2274 | ;; and (2) this buffer is on the screen. |
| 2275 | (if (and gud-last-frame |
| 2276 | (not output-after-point) |
| 2277 | (get-buffer-window (current-buffer))) |
| 2278 | (gud-display-frame))) |
| 2279 | (if moving (goto-char (process-mark proc))))))) |
| 2280 | |
| 2281 | (defun gud-proc-died (proc) |
| 2282 | ;; Stop displaying an arrow in a source file. |
| 2283 | (setq overlay-arrow-position nil) |
| 2284 | |
| 2285 | ;; Kill the dummy process, so that C-x C-c won't worry about it. |
| 2286 | (save-excursion |
| 2287 | (set-buffer (process-buffer proc)) |
| 2288 | (kill-process |
| 2289 | (get-buffer-process |
| 2290 | (gdb-get-instance-buffer gdb-buffer-instance 'gdb-inferior-io)))) |
| 2291 | ) |
| 2292 | |
| 2293 | (defun gud-sentinel (proc msg) |
| 2294 | (cond ((null (buffer-name (process-buffer proc))) |
| 2295 | ;; buffer killed |
| 2296 | (gud-proc-died proc) |
| 2297 | (set-process-buffer proc nil)) |
| 2298 | ((memq (process-status proc) '(signal exit)) |
| 2299 | (gud-proc-died proc) |
| 2300 | |
| 2301 | ;; Fix the mode line. |
| 2302 | (setq mode-line-process |
| 2303 | (concat ": " |
| 2304 | (symbol-name (process-status proc)))) |
| 2305 | (let* ((obuf (current-buffer))) |
| 2306 | ;; save-excursion isn't the right thing if |
| 2307 | ;; process-buffer is current-buffer |
| 2308 | (unwind-protect |
| 2309 | (progn |
| 2310 | ;; Write something in *compilation* and hack its mode line, |
| 2311 | (set-buffer (process-buffer proc)) |
| 2312 | ;; Force mode line redisplay soon |
| 2313 | (set-buffer-modified-p (buffer-modified-p)) |
| 2314 | (if (eobp) |
| 2315 | (insert ?\n mode-name " " msg) |
| 2316 | (save-excursion |
| 2317 | (goto-char (point-max)) |
| 2318 | (insert ?\n mode-name " " msg))) |
| 2319 | ;; If buffer and mode line will show that the process |
| 2320 | ;; is dead, we can delete it now. Otherwise it |
| 2321 | ;; will stay around until M-x list-processes. |
| 2322 | (delete-process proc)) |
| 2323 | ;; Restore old buffer, but don't restore old point |
| 2324 | ;; if obuf is the gud buffer. |
| 2325 | (set-buffer obuf)))))) |
| 2326 | |
| 2327 | (defun gud-display-frame () |
| 2328 | "Find and obey the last filename-and-line marker from the debugger. |
| 2329 | Obeying it means displaying in another window the specified file and line." |
| 2330 | (interactive) |
| 2331 | (if gud-last-frame |
| 2332 | (progn |
| 2333 | ; (gud-set-buffer) |
| 2334 | (gud-display-line (car gud-last-frame) (cdr gud-last-frame)) |
| 2335 | (setq gud-last-last-frame gud-last-frame |
| 2336 | gud-last-frame nil)))) |
| 2337 | |
| 2338 | ;; Make sure the file named TRUE-FILE is in a buffer that appears on the screen |
| 2339 | ;; and that its line LINE is visible. |
| 2340 | ;; Put the overlay-arrow on the line LINE in that buffer. |
| 2341 | ;; Most of the trickiness in here comes from wanting to preserve the current |
| 2342 | ;; region-restriction if that's possible. We use an explicit display-buffer |
| 2343 | ;; to get around the fact that this is called inside a save-excursion. |
| 2344 | |
| 2345 | (defun gud-display-line (true-file line) |
| 2346 | (let* ((buffer (gud-find-file true-file)) |
| 2347 | (window (gud-display-source-buffer buffer)) |
| 2348 | (pos)) |
| 2349 | (if (not window) |
| 2350 | (error "foo bar baz")) |
| 2351 | ;;; (if (equal buffer (current-buffer)) |
| 2352 | ;;; nil |
| 2353 | ;;; (setq buffer-read-only nil)) |
| 2354 | (save-excursion |
| 2355 | ;;; (setq buffer-read-only t) |
| 2356 | (set-buffer buffer) |
| 2357 | (save-restriction |
| 2358 | (widen) |
| 2359 | (goto-line line) |
| 2360 | (setq pos (point)) |
| 2361 | (setq overlay-arrow-string "=>") |
| 2362 | (or overlay-arrow-position |
| 2363 | (setq overlay-arrow-position (make-marker))) |
| 2364 | (set-marker overlay-arrow-position (point) (current-buffer))) |
| 2365 | (cond ((or (< pos (point-min)) (> pos (point-max))) |
| 2366 | (widen) |
| 2367 | (goto-char pos)))) |
| 2368 | (set-window-point window overlay-arrow-position))) |
| 2369 | |
| 2370 | ;;; The gud-call function must do the right thing whether its invoking |
| 2371 | ;;; keystroke is from the GUD buffer itself (via major-mode binding) |
| 2372 | ;;; or a C buffer. In the former case, we want to supply data from |
| 2373 | ;;; gud-last-frame. Here's how we do it: |
| 2374 | |
| 2375 | (defun gud-format-command (str arg) |
| 2376 | (let ((insource (not (eq (current-buffer) gud-comint-buffer)))) |
| 2377 | (if (string-match "\\(.*\\)%f\\(.*\\)" str) |
| 2378 | (setq str (concat |
| 2379 | (substring str (match-beginning 1) (match-end 1)) |
| 2380 | (file-name-nondirectory (if insource |
| 2381 | (buffer-file-name) |
| 2382 | (car gud-last-frame))) |
| 2383 | (substring str (match-beginning 2) (match-end 2))))) |
| 2384 | (if (string-match "\\(.*\\)%d\\(.*\\)" str) |
| 2385 | (setq str (concat |
| 2386 | (substring str (match-beginning 1) (match-end 1)) |
| 2387 | (file-name-directory (if insource |
| 2388 | (buffer-file-name) |
| 2389 | (car gud-last-frame))) |
| 2390 | (substring str (match-beginning 2) (match-end 2))))) |
| 2391 | (if (string-match "\\(.*\\)%l\\(.*\\)" str) |
| 2392 | (setq str (concat |
| 2393 | (substring str (match-beginning 1) (match-end 1)) |
| 2394 | (if insource |
| 2395 | (save-excursion |
| 2396 | (beginning-of-line) |
| 2397 | (save-restriction (widen) |
| 2398 | (1+ (count-lines 1 (point))))) |
| 2399 | (cdr gud-last-frame)) |
| 2400 | (substring str (match-beginning 2) (match-end 2))))) |
| 2401 | (if (string-match "\\(.*\\)%e\\(.*\\)" str) |
| 2402 | (setq str (concat |
| 2403 | (substring str (match-beginning 1) (match-end 1)) |
| 2404 | (find-c-expr) |
| 2405 | (substring str (match-beginning 2) (match-end 2))))) |
| 2406 | (if (string-match "\\(.*\\)%a\\(.*\\)" str) |
| 2407 | (setq str (concat |
| 2408 | (substring str (match-beginning 1) (match-end 1)) |
| 2409 | (gud-read-address) |
| 2410 | (substring str (match-beginning 2) (match-end 2))))) |
| 2411 | (if (string-match "\\(.*\\)%p\\(.*\\)" str) |
| 2412 | (setq str (concat |
| 2413 | (substring str (match-beginning 1) (match-end 1)) |
| 2414 | (if arg (int-to-string arg) "") |
| 2415 | (substring str (match-beginning 2) (match-end 2))))) |
| 2416 | ) |
| 2417 | str |
| 2418 | ) |
| 2419 | |
| 2420 | (defun gud-read-address () |
| 2421 | "Return a string containing the core-address found in the buffer at point." |
| 2422 | (save-excursion |
| 2423 | (let ((pt (point)) found begin) |
| 2424 | (setq found (if (search-backward "0x" (- pt 7) t) (point))) |
| 2425 | (cond |
| 2426 | (found (forward-char 2) |
| 2427 | (buffer-substring found |
| 2428 | (progn (re-search-forward "[^0-9a-f]") |
| 2429 | (forward-char -1) |
| 2430 | (point)))) |
| 2431 | (t (setq begin (progn (re-search-backward "[^0-9]") |
| 2432 | (forward-char 1) |
| 2433 | (point))) |
| 2434 | (forward-char 1) |
| 2435 | (re-search-forward "[^0-9]") |
| 2436 | (forward-char -1) |
| 2437 | (buffer-substring begin (point))))))) |
| 2438 | |
| 2439 | (defun gud-call (fmt &optional arg) |
| 2440 | (let ((msg (gud-format-command fmt arg))) |
| 2441 | (message "Command: %s" msg) |
| 2442 | (sit-for 0) |
| 2443 | (gud-basic-call msg))) |
| 2444 | |
| 2445 | (defun gud-basic-call (command) |
| 2446 | "Invoke the debugger COMMAND displaying source in other window." |
| 2447 | (interactive) |
| 2448 | (gud-set-buffer) |
| 2449 | (let ((proc (get-buffer-process gud-comint-buffer))) |
| 2450 | |
| 2451 | ;; Arrange for the current prompt to get deleted. |
| 2452 | (save-excursion |
| 2453 | (set-buffer gud-comint-buffer) |
| 2454 | (goto-char (process-mark proc)) |
| 2455 | (beginning-of-line) |
| 2456 | (if (looking-at comint-prompt-regexp) |
| 2457 | (set-marker gud-delete-prompt-marker (point))) |
| 2458 | (apply comint-input-sender (list proc command))))) |
| 2459 | |
| 2460 | (defun gud-refresh (&optional arg) |
| 2461 | "Fix up a possibly garbled display, and redraw the arrow." |
| 2462 | (interactive "P") |
| 2463 | (recenter arg) |
| 2464 | (or gud-last-frame (setq gud-last-frame gud-last-last-frame)) |
| 2465 | (gud-display-frame)) |
| 2466 | \f |
| 2467 | ;;; Code for parsing expressions out of C code. The single entry point is |
| 2468 | ;;; find-c-expr, which tries to return an lvalue expression from around point. |
| 2469 | ;;; |
| 2470 | ;;; The rest of this file is a hacked version of gdbsrc.el by |
| 2471 | ;;; Debby Ayers <ayers@asc.slb.com>, |
| 2472 | ;;; Rich Schaefer <schaefer@asc.slb.com> Schlumberger, Austin, Tx. |
| 2473 | |
| 2474 | (defun find-c-expr () |
| 2475 | "Returns the C expr that surrounds point." |
| 2476 | (interactive) |
| 2477 | (save-excursion |
| 2478 | (let ((p) (expr) (test-expr)) |
| 2479 | (setq p (point)) |
| 2480 | (setq expr (expr-cur)) |
| 2481 | (setq test-expr (expr-prev)) |
| 2482 | (while (expr-compound test-expr expr) |
| 2483 | (setq expr (cons (car test-expr) (cdr expr))) |
| 2484 | (goto-char (car expr)) |
| 2485 | (setq test-expr (expr-prev))) |
| 2486 | (goto-char p) |
| 2487 | (setq test-expr (expr-next)) |
| 2488 | (while (expr-compound expr test-expr) |
| 2489 | (setq expr (cons (car expr) (cdr test-expr))) |
| 2490 | (setq test-expr (expr-next)) |
| 2491 | ) |
| 2492 | (buffer-substring (car expr) (cdr expr))))) |
| 2493 | |
| 2494 | (defun expr-cur () |
| 2495 | "Returns the expr that point is in; point is set to beginning of expr. |
| 2496 | The expr is represented as a cons cell, where the car specifies the point in |
| 2497 | the current buffer that marks the beginning of the expr and the cdr specifies |
| 2498 | the character after the end of the expr." |
| 2499 | (let ((p (point)) (begin) (end)) |
| 2500 | (expr-backward-sexp) |
| 2501 | (setq begin (point)) |
| 2502 | (expr-forward-sexp) |
| 2503 | (setq end (point)) |
| 2504 | (if (>= p end) |
| 2505 | (progn |
| 2506 | (setq begin p) |
| 2507 | (goto-char p) |
| 2508 | (expr-forward-sexp) |
| 2509 | (setq end (point)) |
| 2510 | ) |
| 2511 | ) |
| 2512 | (goto-char begin) |
| 2513 | (cons begin end))) |
| 2514 | |
| 2515 | (defun expr-backward-sexp () |
| 2516 | "Version of `backward-sexp' that catches errors." |
| 2517 | (condition-case nil |
| 2518 | (backward-sexp) |
| 2519 | (error t))) |
| 2520 | |
| 2521 | (defun expr-forward-sexp () |
| 2522 | "Version of `forward-sexp' that catches errors." |
| 2523 | (condition-case nil |
| 2524 | (forward-sexp) |
| 2525 | (error t))) |
| 2526 | |
| 2527 | (defun expr-prev () |
| 2528 | "Returns the previous expr, point is set to beginning of that expr. |
| 2529 | The expr is represented as a cons cell, where the car specifies the point in |
| 2530 | the current buffer that marks the beginning of the expr and the cdr specifies |
| 2531 | the character after the end of the expr" |
| 2532 | (let ((begin) (end)) |
| 2533 | (expr-backward-sexp) |
| 2534 | (setq begin (point)) |
| 2535 | (expr-forward-sexp) |
| 2536 | (setq end (point)) |
| 2537 | (goto-char begin) |
| 2538 | (cons begin end))) |
| 2539 | |
| 2540 | (defun expr-next () |
| 2541 | "Returns the following expr, point is set to beginning of that expr. |
| 2542 | The expr is represented as a cons cell, where the car specifies the point in |
| 2543 | the current buffer that marks the beginning of the expr and the cdr specifies |
| 2544 | the character after the end of the expr." |
| 2545 | (let ((begin) (end)) |
| 2546 | (expr-forward-sexp) |
| 2547 | (expr-forward-sexp) |
| 2548 | (setq end (point)) |
| 2549 | (expr-backward-sexp) |
| 2550 | (setq begin (point)) |
| 2551 | (cons begin end))) |
| 2552 | |
| 2553 | (defun expr-compound-sep (span-start span-end) |
| 2554 | "Returns '.' for '->' & '.', returns ' ' for white space, |
| 2555 | returns '?' for other punctuation." |
| 2556 | (let ((result ? ) |
| 2557 | (syntax)) |
| 2558 | (while (< span-start span-end) |
| 2559 | (setq syntax (char-syntax (char-after span-start))) |
| 2560 | (cond |
| 2561 | ((= syntax ? ) t) |
| 2562 | ((= syntax ?.) (setq syntax (char-after span-start)) |
| 2563 | (cond |
| 2564 | ((= syntax ?.) (setq result ?.)) |
| 2565 | ((and (= syntax ?-) (= (char-after (+ span-start 1)) ?>)) |
| 2566 | (setq result ?.) |
| 2567 | (setq span-start (+ span-start 1))) |
| 2568 | (t (setq span-start span-end) |
| 2569 | (setq result ??))))) |
| 2570 | (setq span-start (+ span-start 1))) |
| 2571 | result)) |
| 2572 | |
| 2573 | (defun expr-compound (first second) |
| 2574 | "Non-nil if concatenating FIRST and SECOND makes a single C token. |
| 2575 | The two exprs are represented as a cons cells, where the car |
| 2576 | specifies the point in the current buffer that marks the beginning of the |
| 2577 | expr and the cdr specifies the character after the end of the expr. |
| 2578 | Link exprs of the form: |
| 2579 | Expr -> Expr |
| 2580 | Expr . Expr |
| 2581 | Expr (Expr) |
| 2582 | Expr [Expr] |
| 2583 | (Expr) Expr |
| 2584 | [Expr] Expr" |
| 2585 | (let ((span-start (cdr first)) |
| 2586 | (span-end (car second)) |
| 2587 | (syntax)) |
| 2588 | (setq syntax (expr-compound-sep span-start span-end)) |
| 2589 | (cond |
| 2590 | ((= (car first) (car second)) nil) |
| 2591 | ((= (cdr first) (cdr second)) nil) |
| 2592 | ((= syntax ?.) t) |
| 2593 | ((= syntax ? ) |
| 2594 | (setq span-start (char-after (- span-start 1))) |
| 2595 | (setq span-end (char-after span-end)) |
| 2596 | (cond |
| 2597 | ((= span-start ?) ) t ) |
| 2598 | ((= span-start ?] ) t ) |
| 2599 | ((= span-end ?( ) t ) |
| 2600 | ((= span-end ?[ ) t ) |
| 2601 | (t nil)) |
| 2602 | ) |
| 2603 | (t nil)))) |
| 2604 | |
| 2605 | (provide 'gud) |
| 2606 | |
| 2607 | ;;; gud.el ends here |