1991-12-18 10:42:47 +00:00
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;; Grand Unified Debugger mode --- run gdb, sdb, dbx under Emacs control
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1992-01-09 05:06:34 +00:00
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;; @(#)gud.el 1.10
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1991-12-18 10:42:47 +00:00
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 1, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to
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;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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;; The ancestral gdb.el was by W. Schelter <wfs@rascal.ics.utexas.edu>
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;; It was later ewritten by rms. Some ideas were due to Masanobu.
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;; Grand Unification (sdb/dbx support) by Eric S. Raymond <eric@thyrsus.com>
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;; The overloading code was then rewritten by Barry Warsaw <bwarsaw@cen.com>,
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;; who also hacked the mode to use comint.el.
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;; Note: use of this package with sdb requires that your tags.el support
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;; the find-tag-noselect entry point. Stock distributions up to 18.57 do
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;; *not* include this feature; if it's not included with this file, email
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;; eric@snark.thyrsus.com for it or get 18.58.
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(require 'comint)
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(require 'tags)
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;; ======================================================================
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;; the overloading mechanism
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(defun gud-overload-functions (gud-overload-alist)
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"Overload functions defined in GUD-OVERLOAD-ALIST.
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This association list has elements of the form
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(ORIGINAL-FUNCTION-NAME OVERLOAD-FUNCTION)"
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(let ((binding nil)
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(overloads gud-overload-alist))
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(while overloads
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(setq binding (car overloads)
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overloads (cdr overloads))
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(fset (car binding) (symbol-function (car (cdr binding))))
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)))
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(defun gud-debugger-startup (f d)
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(error "GUD not properly entered."))
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(defun gud-marker-filter (proc s)
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(error "GUD not properly entered."))
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(defun gud-visit-file (f)
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(error "GUD not properly entered."))
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(defun gud-set-break (proc f n)
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(error "GUD not properly entered."))
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;; This macro is used below to define some basic debugger interface commands.
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;; Of course you may use `def-gud' with any other debugger command, including
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;; user defined ones.
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(defmacro def-gud (func name key &optional doc)
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(let* ((cstr (list 'if '(not (= 1 arg))
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(list 'format "%s %s" name 'arg) name)))
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(list 'progn
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(list 'defun func '(arg)
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(or doc "")
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'(interactive "p")
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(list 'gud-call cstr))
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(list 'define-key 'gud-mode-map key (list 'quote func)))))
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;; All debugger-specific information is collected here
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;; Here's how it works, in case you ever need to add a debugger to the table.
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;;
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;; Each entry must define the following at startup:
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;;
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;;<name>
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;; comint-prompt-regexp
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;; gud-<name>-startup-command
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;; gud-<name>-marker-filter
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;; gud-<name>-file-visit
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;; gud-<name>-set-break
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;;
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1992-01-09 05:06:34 +00:00
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;; The job of the startup-command method is to fire up a copy of the debugger,
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;; given an object file and source directory.
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;;
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;; The job of the marker-filter method is to detect file/line markers in
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;; strings and set the global gud-last-frame to indicate what display
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;; action (if any) should be triggered by the marker. Note that only
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;; whetever the method *returns* is displayed in the buffer; thus, you
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;; can filter the debugger's output, interpreting some and passing on
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;; the rest.
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;;
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;; The job of the visit-file method is to visit and return the buffer indicated
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;; by the car of gud-tag-frame. This may be a file name, a tag name, or
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;; something else.
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;;
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;; The job of the gud-set-break method is to send the commands necessary
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;; to set a breakpoint at a given line in a given source file.
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;;
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;; Debugger-specific information begins here:
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1991-12-18 10:42:47 +00:00
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;; ======================================================================
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;; gdb functions
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(defun gud-gdb-debugger-startup (f d)
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(make-comint (concat "gud-" f) "gdb" nil "-fullname" "-cd" d f))
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(defun gud-gdb-marker-filter (proc s)
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(if (string-match "\032\032\\([^:\n]*\\):\\([0-9]*\\):.*\n" s)
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(progn
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(setq gud-last-frame
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(cons
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(substring string (match-beginning 1) (match-end 1))
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(string-to-int
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(substring string (match-beginning 2) (match-end 2)))))
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;; this computation means the ^Z^Z-initiated marker in the
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;; input string is never emitted.
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(concat
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(substring string 0 (match-beginning 0))
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(substring string (match-end 0))
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))
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string))
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(defun gud-gdb-visit-file (f)
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(find-file-noselect f))
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(defun gud-gdb-set-break (proc f n)
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(gud-call "break %s:%d" f n))
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1992-01-09 05:06:34 +00:00
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;;;###autoload
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1991-12-18 10:42:47 +00:00
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(defun gdb (path)
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"Run gdb on program FILE in buffer *gud-FILE*.
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The directory containing FILE becomes the initial working directory
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and source-file directory for your debugger."
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(interactive "fRun gdb on file: ")
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(gud-overload-functions '((gud-debugger-startup gud-gdb-debugger-startup)
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(gud-marker-filter gud-gdb-marker-filter)
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(gud-visit-file gud-gdb-visit-file)
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(gud-set-break gud-gdb-set-break)))
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(def-gud gud-step "step" "\C-cs" "Step one source line with display")
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(def-gud gud-stepi "stepi" "\C-ci" "Step one instruction with display")
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(def-gud gud-next "next" "\C-cn" "Step one line (skip functions)")
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(def-gud gud-cont "cont" "\C-c\C-c" "Continue with display")
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(def-gud gud-finish "finish" "\C-c\C-f" "Finish executing current function")
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(def-gud gud-up "up" "\C-c<" "Up N stack frames (numeric arg)")
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(def-gud gud-down "down" "\C-c>" "Down N stack frames (numeric arg)")
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(gud-common-init path)
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(setq comint-prompt-regexp "^(.*gdb[+]?) *")
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(run-hooks 'gdb-mode-hook)
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)
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;; ======================================================================
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;; sdb functions
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(defun gud-sdb-debugger-startup (f d)
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(make-comint (concat "gud-" f) "sdb" nil f "-" d))
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(defun gud-sdb-marker-filter (proc str)
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(if (string-match "\\(^0x\\w* in \\|^\\|\n\\)\\([^:\n]*\\):\\([0-9]*\\):.*\n"
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str)
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(setq gud-last-frame
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(cons
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(substring string (match-beginning 2) (match-end 2))
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(string-to-int
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(substring string (match-beginning 3) (match-end 3))))))
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string)
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(defun gud-sdb-visit-file (f)
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(find-tag-noselect f t))
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(defun gud-sdb-set-break (proc f n)
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(gud-queue-send (format "e %s" f) (format "%d b" n)))
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1992-01-09 05:06:34 +00:00
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;;;###autoload
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1991-12-18 10:42:47 +00:00
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(defun sdb (path)
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"Run sdb on program FILE in buffer *gud-FILE*.
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The directory containing FILE becomes the initial working directory
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and source-file directory for your debugger."
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(if (not (and (boundp 'tags-file-name) (file-exists-p tags-file-name)))
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(error "The sdb support requires a valid tags table to work."))
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(interactive "fRun sdb on file: ")
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(gud-overload-functions '((gud-debugger-startup gud-sdb-debugger-startup)
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(gud-marker-filter gud-sdb-marker-filter)
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(gud-visit-file gud-sdb-visit-file)
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(gud-set-break gud-sdb-set-break)))
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(def-gud gud-step "s" "\C-cs" "Step one source line with display")
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(def-gud gud-stepi "i" "\C-ci" "Step one instruction with display")
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(def-gud gud-next "S" "\C-cn" "Step one source line (skip functions)")
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(def-gud gud-cont "c" "\C-cc" "Continue with display")
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(gud-common-init path)
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(setq comint-prompt-pattern "\\(^\\|\n\\)\\*")
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(run-hooks 'sdb-mode-hook)
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)
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;; ======================================================================
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;; dbx functions
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(defun gud-dbx-debugger-startup (f d)
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(make-comint (concat "gud-" file) "dbx" nil f))
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(defun gud-dbx-marker-filter (proc str)
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(if (string-match
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"stopped in .* at line \\([0-9]*\\) in file \"\\([^\"]*\\)\"" str)
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(setq gud-last-frame
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(cons
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(substring string (match-beginning 2) (match-end 2))
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(string-to-int
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(substring string (match-beginning 1) (match-end 1))))))
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string)
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(defun gud-dbx-visit-file (f)
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(find-file-noselect f))
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(defun gud-dbx-set-break (proc f n)
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(gud-call "stop at \"%s\":%d" f n))
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1992-01-09 05:06:34 +00:00
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;;;###autoload
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1991-12-18 10:42:47 +00:00
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(defun dbx (path)
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"Run dbx on program FILE in buffer *gud-FILE*.
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The directory containing FILE becomes the initial working directory
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and source-file directory for your debugger."
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(interactive "fRun dbx on file: ")
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(gud-overload-functions '((gud-debugger-startup gud-dbx-debugger-startup)
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(gud-marker-filter gud-dbx-marker-filter)
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(gud-visit-file gud-dbx-visit-file)
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(gud-set-break gud-dbx-set-break)))
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(make-local-variable 'comint-prompt-regexp)
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(setq comint-prompt-regexp "^[^)]*dbx) *")
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(gud-common-init path)
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(run-hooks 'dbx-mode-hook)
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)
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;;
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;; End of debugger-specific information
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1992-01-09 05:06:34 +00:00
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;;
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1991-12-18 10:42:47 +00:00
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(defvar gud-mode-map nil
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"Keymap for gud-mode.")
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(defvar gud-command-queue nil)
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(if gud-mode-map
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nil
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(setq gud-mode-map (copy-keymap comint-mode-map))
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(define-key gud-mode-map "\C-l" 'gud-refresh))
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(define-key ctl-x-map " " 'gud-break)
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(define-key ctl-x-map "&" 'send-gud-command)
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(defun gud-mode ()
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"Major mode for interacting with an inferior debugger process.
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The following commands are available:
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\\{gud-mode-map}
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\\[gud-display-frame] displays in the other window
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the last line referred to in the gud buffer.
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\\[gud-step],\\[gud-next], and \\[gud-nexti] in the gud window,
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do a step-one-line, step-one-line (not entering function calls), and
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step-one-instruction and then update the other window
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with the current file and position. \\[gud-cont] continues
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execution.
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If you are in a source file, you may set a breakpoint at the current
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line in the current source file by doing \\[gud-break].
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Commands:
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Many commands are inherited from comint mode.
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Additionally we have:
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\\[gud-display-frame] display frames file in other window
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\\[gud-step] advance one line in program
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\\[gud-next] advance one line in program (skip over calls).
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\\[send-gud-command] used for special printing of an arg at the current point.
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C-x SPACE sets break point at current line."
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(interactive)
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(comint-mode)
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; (kill-all-local-variables)
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(setq major-mode 'gud-mode)
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(setq mode-name "Debugger")
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(setq mode-line-process '(": %s"))
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(use-local-map gud-mode-map)
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(make-local-variable 'gud-last-frame)
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(setq gud-last-frame nil)
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(make-local-variable 'comint-prompt-regexp)
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(run-hooks 'gud-mode-hook)
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)
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(defvar current-gud-buffer nil)
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(defun gud-common-init (path)
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;; perform initializations common to all debuggers
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(setq path (expand-file-name path))
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(let ((file (file-name-nondirectory path)))
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(switch-to-buffer (concat "*gud-" file "*"))
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(setq default-directory (file-name-directory path))
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(or (bolp) (newline))
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(insert "Current directory is " default-directory "\n")
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(gud-debugger-startup file default-directory))
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(gud-mode)
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(set-process-filter (get-buffer-process (current-buffer)) 'gud-filter)
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(set-process-sentinel (get-buffer-process (current-buffer)) 'gud-sentinel)
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(setq gud-command-queue nil)
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(gud-set-buffer)
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)
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(defun gud-set-buffer ()
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(cond ((eq major-mode 'gud-mode)
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(setq current-gud-buffer (current-buffer)))))
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(defun gud-filter (proc string)
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;; This function is responsible for inserting output from your debugger
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;; into the buffer. The hard work is done by the method that is
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;; the value of gud-marker-filter.
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(let ((inhibit-quit t))
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(gud-filter-insert proc (gud-marker-filter proc string))
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;; If we've got queued commands and we see a prompt, pop one and send it.
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;; In theory we should check that a prompt has been issued before sending
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;; queued commands. In practice, command responses from the first through
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;; penultimate elements of a command sequence are short enough that we
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;; don't really have to bother.
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(if gud-command-queue
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(progn
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(gud-call (car gud-command-queue))
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(setq gud-command-queue (cdr gud-command-queue))
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)
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)))
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(defun gud-filter-insert (proc string)
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;; Here's where the actual buffer insertion is done
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(let ((moving (= (point) (process-mark proc)))
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(output-after-point (< (point) (process-mark proc)))
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(old-buffer (current-buffer))
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start)
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(set-buffer (process-buffer proc))
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(unwind-protect
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(save-excursion
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;; Insert the text, moving the process-marker.
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(goto-char (process-mark proc))
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(setq start (point))
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(insert-before-markers string)
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(set-marker (process-mark proc) (point))
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;; Check for a filename-and-line number.
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;; Don't display the specified file
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;; unless (1) point is at or after the position where output appears
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;; and (2) this buffer is on the screen.
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(if (and gud-last-frame (not output-after-point)
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(get-buffer-window (current-buffer)))
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(gud-display-frame))
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)
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(set-buffer old-buffer))
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(if moving (goto-char (process-mark proc)))))
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(defun gud-sentinel (proc msg)
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(cond ((null (buffer-name (process-buffer proc)))
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;; buffer killed
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;; Stop displaying an arrow in a source file.
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(setq overlay-arrow-position nil)
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(set-process-buffer proc nil))
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((memq (process-status proc) '(signal exit))
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;; Stop displaying an arrow in a source file.
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(setq overlay-arrow-position nil)
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;; Fix the mode line.
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(setq mode-line-process
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(concat ": "
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(symbol-name (process-status proc))))
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(let* ((obuf (current-buffer)))
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;; save-excursion isn't the right thing if
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;; process-buffer is current-buffer
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(unwind-protect
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|
|
(progn
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;; Write something in *compilation* and hack its mode line,
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(set-buffer (process-buffer proc))
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;; Force mode line redisplay soon
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|
(set-buffer-modified-p (buffer-modified-p))
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(if (eobp)
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(insert ?\n mode-name " " msg)
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(save-excursion
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|
(goto-char (point-max))
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(insert ?\n mode-name " " msg)))
|
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;; If buffer and mode line will show that the process
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|
;; is dead, we can delete it now. Otherwise it
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|
;; will stay around until M-x list-processes.
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(delete-process proc))
|
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|
;; Restore old buffer, but don't restore old point
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|
;; if obuf is the gud buffer.
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|
(set-buffer obuf))))))
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(defun gud-refresh (&optional arg)
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|
"Fix up a possibly garbled display, and redraw the arrow."
|
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|
(interactive "P")
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|
(recenter arg)
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(gud-display-frame))
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(defun gud-display-frame ()
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|
|
"Find and obey the last filename-and-line marker from the debugger.
|
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|
|
|
|
Obeying it means displaying in another window the specified file and line."
|
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|
|
(interactive)
|
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|
|
|
|
(if gud-last-frame
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|
|
|
(progn
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|
(gud-set-buffer)
|
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|
(gud-display-line (car gud-last-frame) (cdr gud-last-frame))
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|
(setq gud-last-frame nil))))
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;; Make sure the file named TRUE-FILE is in a buffer that appears on the screen
|
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|
;; and that its line LINE is visible.
|
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|
|
;; Put the overlay-arrow on the line LINE in that buffer.
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|
(defun gud-display-line (true-file line)
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|
(let* ((buffer (gud-visit-file true-file))
|
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|
|
(window (display-buffer buffer t))
|
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|
(pos))
|
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|
|
(save-excursion
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|
|
(set-buffer buffer)
|
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|
|
(save-restriction
|
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|
(widen)
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|
(goto-line line)
|
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|
(setq pos (point))
|
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|
(setq overlay-arrow-string "=>")
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|
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|
|
(or overlay-arrow-position
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|
|
(setq overlay-arrow-position (make-marker)))
|
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|
|
(set-marker overlay-arrow-position (point) (current-buffer)))
|
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|
|
(cond ((or (< pos (point-min)) (> pos (point-max)))
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|
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(widen)
|
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|
|
(goto-char pos))))
|
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|
|
(set-window-point window overlay-arrow-position)))
|
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|
|
(defun gud-call (command &rest args)
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|
|
"Invoke the debugger COMMAND displaying source in other window."
|
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|
|
(interactive)
|
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|
|
(gud-set-buffer)
|
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|
|
(goto-char (point-max))
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(let ((command (concat (apply 'format command args) "\n"))
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(proc (get-buffer-process current-gud-buffer)))
|
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|
(gud-filter-insert proc command)
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|
(send-string proc command)
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|
))
|
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|
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(defun gud-queue-send (&rest cmdlist)
|
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|
|
|
|
;; Send the first command, queue the rest for send after successive
|
|
|
|
|
|
;; send on subsequent prompts
|
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|
|
|
(interactive)
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|
|
(gud-call (car cmdlist))
|
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|
|
(setq gud-command-queue (append gud-command-queue (cdr cmdlist))))
|
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|
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|
|
(defun gud-apply-from-source (func)
|
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|
|
|
;; Apply a method from the gud buffer environment, passing it file and line.
|
|
|
|
|
|
;; This is intended to be used for gud commands called from a source file.
|
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|
|
|
(if (not buffer-file-name)
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|
|
(error "There is no file associated with this buffer"))
|
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|
|
(let ((file (file-name-nondirectory buffer-file-name))
|
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|
|
(line (save-restriction (widen) (1+ (count-lines 1 (point))))))
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|
|
(save-excursion
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|
|
(gud-set-buffer)
|
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|
|
|
(funcall func
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|
|
(get-buffer-process current-gud-buffer)
|
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|
file
|
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|
line)
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|
)))
|
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|
|
(defun gud-break ()
|
|
|
|
|
|
"Set breakpoint at this source line."
|
|
|
|
|
|
(interactive)
|
|
|
|
|
|
(gud-apply-from-source 'gud-set-break))
|
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|
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|
|
(defun gud-read-address()
|
|
|
|
|
|
"Return a string containing the core-address found in the buffer at point."
|
|
|
|
|
|
(save-excursion
|
|
|
|
|
|
(let ((pt (dot)) found begin)
|
|
|
|
|
|
(setq found (if (search-backward "0x" (- pt 7) t)(dot)))
|
|
|
|
|
|
(cond (found (forward-char 2)
|
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|
|
|
(setq result
|
|
|
|
|
|
(buffer-substring found
|
|
|
|
|
|
(progn (re-search-forward "[^0-9a-f]")
|
|
|
|
|
|
(forward-char -1)
|
|
|
|
|
|
(dot)))))
|
|
|
|
|
|
(t (setq begin (progn (re-search-backward "[^0-9]") (forward-char 1)
|
|
|
|
|
|
(dot)))
|
|
|
|
|
|
(forward-char 1)
|
|
|
|
|
|
(re-search-forward "[^0-9]")
|
|
|
|
|
|
(forward-char -1)
|
|
|
|
|
|
(buffer-substring begin (dot)))))))
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(defvar gud-commands nil
|
|
|
|
|
|
"List of strings or functions used by send-gud-command.
|
|
|
|
|
|
It is for customization by you.")
|
|
|
|
|
|
|
|
|
|
|
|
(defun send-gud-command (arg)
|
|
|
|
|
|
|
|
|
|
|
|
"This command reads the number where the cursor is positioned. It
|
|
|
|
|
|
then inserts this ADDR at the end of the debugger buffer. A numeric arg
|
|
|
|
|
|
selects the ARG'th member COMMAND of the list gud-print-command. If
|
|
|
|
|
|
COMMAND is a string, (format COMMAND ADDR) is inserted, otherwise
|
|
|
|
|
|
(funcall COMMAND ADDR) is inserted. eg. \"p (rtx)%s->fld[0].rtint\"
|
|
|
|
|
|
is a possible string to be a member of gud-commands. "
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(interactive "P")
|
|
|
|
|
|
(let (comm addr)
|
|
|
|
|
|
(if arg (setq comm (nth arg gud-commands)))
|
|
|
|
|
|
(setq addr (gud-read-address))
|
|
|
|
|
|
(if (eq (current-buffer) current-gud-buffer)
|
|
|
|
|
|
(set-mark (point)))
|
|
|
|
|
|
(cond (comm
|
|
|
|
|
|
(setq comm
|
|
|
|
|
|
(if (stringp comm) (format comm addr) (funcall comm addr))))
|
|
|
|
|
|
(t (setq comm addr)))
|
|
|
|
|
|
(switch-to-buffer current-gud-buffer)
|
|
|
|
|
|
(goto-char (dot-max))
|
|
|
|
|
|
(insert-string comm)))
|
1992-01-09 05:06:34 +00:00
|
|
|
|
|
|
|
|
|
|
;; gud.e ends here
|
|
|
|
|
|
|
