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OperatingSystem/.unused/cmon/sdcc/bin/sdcdb.el

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+;;; sdcdb.el --- run sdcdb under Emacs
+
+;; Author: W. Schelter, University of Texas
+;;     wfs@rascal.ics.utexas.edu
+;; Rewritten by rms.
+;; Keywords: c, unix, tools, debugging
+
+;; Some ideas are due to Masanobu.
+
+;; This file is part of XEmacs.
+
+;; XEmacs is free software; you can redistribute it and/or modify it
+;; under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; XEmacs is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;; General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with XEmacs; see the file COPYING.  If not, write to the Free
+;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+;; 02111-1307, USA.
+
+;;; Synched up with: Not in FSF
+
+;;; Commentary:
+
+;; Description of SDCDB interface:
+
+;; A facility is provided for the simultaneous display of the source code
+;; in one window, while using sdcdb to step through a function in the
+;; other.  A small arrow in the source window, indicates the current
+;; line.
+
+;; Starting up:
+
+;; In order to use this facility, invoke the command SDCDB to obtain a
+;; shell window with the appropriate command bindings.  You will be asked
+;; for the name of a file to run.  Sdcdb will be invoked on this file, in a
+;; window named *sdcdb-foo* if the file is foo.
+
+;; M-s steps by one line, and redisplays the source file and line.
+
+;; You may easily create additional commands and bindings to interact
+;; with the display.  For example to put the sdcdb command next on \M-n
+;; (def-sdcdb next "\M-n")
+
+;; This causes the emacs command sdcdb-next to be defined, and runs
+;; sdcdb-display-frame after the command.
+
+;; sdcdb-display-frame is the basic display function.  It tries to display
+;; in the other window, the file and line corresponding to the current
+;; position in the sdcdb window.  For example after a sdcdb-step, it would
+;; display the line corresponding to the position for the last step.  Or
+;; if you have done a backtrace in the sdcdb buffer, and move the cursor
+;; into one of the frames, it would display the position corresponding to
+;; that frame.
+
+;; sdcdb-display-frame is invoked automatically when a filename-and-line-number
+;; appears in the output.
+
+;;; Code:
+
+(require 'comint)
+(require 'shell)
+
+(condition-case nil
+    (if (featurep 'toolbar)
+	(require 'eos-toolbar "sun-eos-toolbar"))
+  (error nil))
+
+(defvar sdcdb-last-frame)
+(defvar sdcdb-delete-prompt-marker)
+(defvar sdcdb-filter-accumulator)
+(defvar sdcdb-last-frame-displayed-p)
+(defvar sdcdb-arrow-extent nil)
+(or (fboundp 'make-glyph) (fset 'make-glyph 'identity)) ; work w/ pre beta v12
+(defvar sdcdb-arrow-glyph (make-glyph "=>"))
+
+(make-face 'sdcdb-arrow-face)
+(or (face-differs-from-default-p 'sdcdb-arrow-face)
+   ;; Usually has a better default value than highlight does
+   (copy-face 'isearch 'sdcdb-arrow-face))
+
+;; Hooks can side-effect extent arg to change extent properties
+(defvar sdcdb-arrow-extent-hooks '())
+
+(defvar sdcdb-prompt-pattern "^>\\|^(.*sdcdb[+]?) *\\|^---Type <return> to.*--- *"
+  "A regexp to recognize the prompt for sdcdb or sdcdb+.") 
+
+(defvar sdcdb-mode-map nil
+  "Keymap for sdcdb-mode.")
+
+(defvar sdcdb-toolbar nil)
+ 
+(if sdcdb-mode-map
+   nil
+  (setq sdcdb-mode-map (make-sparse-keymap))
+  (set-keymap-name sdcdb-mode-map 'sdcdb-mode-map)
+  (set-keymap-parents sdcdb-mode-map (list comint-mode-map))
+  (define-key sdcdb-mode-map "\C-l" 'sdcdb-refresh)
+  (define-key sdcdb-mode-map "\C-c\C-c" 'sdcdb-control-c-subjob)
+  (define-key sdcdb-mode-map "\t" 'comint-dynamic-complete)
+  (define-key sdcdb-mode-map "\M-?" 'comint-dynamic-list-completions))
+
+(define-key ctl-x-map " " 'sdcdb-break)
+(define-key ctl-x-map "&" 'send-sdcdb-command)
+
+;;Of course you may use `def-sdcdb' with any other sdcdb command, including
+;;user defined ones.   
+
+(defmacro def-sdcdb (name key &optional doc &rest forms)
+  (let* ((fun (intern (format "sdcdb-%s" name)))
+	 (cstr (list 'if '(not (= 1 arg))
+		     (list 'format "%s %s" name 'arg)
+		     name)))
+    (list 'progn
+	  (nconc (list 'defun fun '(arg)
+		       (or doc "")
+		       '(interactive "p")
+		       (list 'sdcdb-call cstr))
+		 forms)
+	  (and key (list 'define-key 'sdcdb-mode-map key  (list 'quote fun))))))
+
+(def-sdcdb "step"   "\M-s" "Step one source line with display"
+  (sdcdb-delete-arrow-extent))
+(def-sdcdb "stepi"  "\M-i" "Step one instruction with display"
+  (sdcdb-delete-arrow-extent))
+(def-sdcdb "finish" "\C-c\C-f" "Finish executing current function"
+  (sdcdb-delete-arrow-extent))
+(def-sdcdb "run" nil "Run the current program"
+  (sdcdb-delete-arrow-extent))
+
+;;"next" and "cont" were bound to M-n and M-c in Emacs 18, but these are
+;;poor choices, since M-n is used for history navigation and M-c is
+;;capitalize-word.  These are defined without key bindings so that users
+;;may choose their own bindings.
+(def-sdcdb "next"   "\C-c\C-n" "Step one source line (skip functions)"
+  (sdcdb-delete-arrow-extent))
+(def-sdcdb "cont"   "\C-c\M-c" "Proceed with the program"
+  (sdcdb-delete-arrow-extent))
+
+(def-sdcdb "up"     "\C-c<" "Go up N stack frames (numeric arg) with display")
+(def-sdcdb "down"   "\C-c>" "Go down N stack frames (numeric arg) with display")
+
+(defvar sdcdb-display-mode nil
+  "Minor mode for sdcdb frame display")
+(or (assq 'sdcdb-display-mode minor-mode-alist)
+    (setq minor-mode-alist
+	  (purecopy
+	   (append minor-mode-alist
+		   '((sdcdb-display-mode " Frame"))))))
+
+(defun sdcdb-display-mode (&optional arg)
+  "Toggle SDCDB Frame display mode
+With arg, turn display mode on if and only if arg is positive.
+In the display minor mode, source file are displayed in another
+window for repective \\[sdcdb-display-frame] commands."
+  (interactive "P")
+  (setq sdcdb-display-mode (if (null arg)
+			     (not sdcdb-display-mode)
+			   (> (prefix-numeric-value arg) 0))))
+
+;; Using cc-mode's syntax table is broken.
+(defvar sdcdb-mode-syntax-table nil
+  "Syntax table for SDCDB mode.")
+
+;; This is adapted from CC Mode 5.11.
+(unless sdcdb-mode-syntax-table
+  (setq sdcdb-mode-syntax-table (make-syntax-table))
+  ;; DO NOT TRY TO SET _ (UNDERSCORE) TO WORD CLASS!
+  (modify-syntax-entry ?_  "_" sdcdb-mode-syntax-table)
+  (modify-syntax-entry ?\\ "\\" sdcdb-mode-syntax-table)
+  (modify-syntax-entry ?+  "." sdcdb-mode-syntax-table)
+  (modify-syntax-entry ?-  "." sdcdb-mode-syntax-table)
+  (modify-syntax-entry ?=  "." sdcdb-mode-syntax-table)
+  (modify-syntax-entry ?%  "." sdcdb-mode-syntax-table)
+  (modify-syntax-entry ?<  "." sdcdb-mode-syntax-table)
+  (modify-syntax-entry ?>  "." sdcdb-mode-syntax-table)
+  (modify-syntax-entry ?&  "." sdcdb-mode-syntax-table)
+  (modify-syntax-entry ?|  "." sdcdb-mode-syntax-table)
+  (modify-syntax-entry ?\' "\"" sdcdb-mode-syntax-table)
+  ;; add extra comment syntax
+  (modify-syntax-entry ?/  ". 14"  sdcdb-mode-syntax-table)
+  (modify-syntax-entry ?*  ". 23"  sdcdb-mode-syntax-table))
+
+
+(defun sdcdb-mode ()
+  "Major mode for interacting with an inferior Sdcdb process.
+The following commands are available:
+
+\\{sdcdb-mode-map}
+
+\\[sdcdb-display-frame] displays in the other window
+the last line referred to in the sdcdb buffer. See also
+\\[sdcdb-display-mode].
+
+\\[sdcdb-step],\\[sdcdb-next], and \\[sdcdb-nexti] in the sdcdb window,
+call sdcdb to step,next or nexti and then update the other window
+with the current file and position.
+
+If you are in a source file, you may select a point to break
+at, by doing \\[sdcdb-break].
+
+Commands:
+Many commands are inherited from comint mode. 
+Additionally we have:
+
+\\[sdcdb-display-frame] display frames file in other window
+\\[sdcdb-step] advance one line in program
+\\[send-sdcdb-command] used for special printing of an arg at the current point.
+C-x SPACE sets break point at current line."
+  (interactive)
+  (comint-mode)
+  (use-local-map sdcdb-mode-map)
+  (set-syntax-table sdcdb-mode-syntax-table)
+  (make-local-variable 'sdcdb-last-frame-displayed-p)
+  (make-local-variable 'sdcdb-last-frame)
+  (make-local-variable 'sdcdb-delete-prompt-marker)
+  (make-local-variable 'sdcdb-display-mode)
+  (make-local-variable' sdcdb-filter-accumulator)
+  (setq sdcdb-last-frame nil
+        sdcdb-delete-prompt-marker nil
+        sdcdb-filter-accumulator nil
+	sdcdb-display-mode t
+        major-mode 'sdcdb-mode
+        mode-name "Inferior SDCDB"
+        comint-prompt-regexp sdcdb-prompt-pattern
+        sdcdb-last-frame-displayed-p t)
+  (set (make-local-variable 'shell-dirtrackp) t)
+  ;;(make-local-variable 'sdcdb-arrow-extent)
+  (and (extentp sdcdb-arrow-extent)
+       (delete-extent sdcdb-arrow-extent))
+  (setq sdcdb-arrow-extent nil)
+  ;; XEmacs change:
+  (make-local-hook 'kill-buffer-hook)
+  (add-hook 'kill-buffer-hook 'sdcdb-delete-arrow-extent nil t)
+  (add-hook 'comint-input-filter-functions 'shell-directory-tracker nil t)
+  (run-hooks 'sdcdb-mode-hook))
+
+(defun sdcdb-delete-arrow-extent ()
+  (let ((inhibit-quit t))
+    (if sdcdb-arrow-extent
+        (delete-extent sdcdb-arrow-extent))
+    (setq sdcdb-arrow-extent nil)))
+
+(defvar current-sdcdb-buffer nil)
+
+;;;###autoload
+(defvar sdcdb-command-name "sdcdb"
+  "Pathname for executing sdcdb.")
+
+;;;###autoload
+(defun sdcdb (path &optional corefile)
+  "Run sdcdb on program FILE in buffer *sdcdb-FILE*.
+The directory containing FILE becomes the initial working directory
+and source-file directory for SDCDB.  If you wish to change this, use
+the SDCDB commands `cd DIR' and `directory'."
+  (interactive "FRun sdcdb on file: ")
+  (setq path (file-truename (expand-file-name path)))
+  (let ((file (file-name-nondirectory path)))
+    (switch-to-buffer (concat "*sdcdb-" file "*"))
+    (setq default-directory (file-name-directory path))
+    (or (bolp) (newline))
+    (insert "Current directory is " default-directory "\n")
+    (apply 'make-comint
+	   (concat "sdcdb-" file)
+	   (substitute-in-file-name sdcdb-command-name)
+	   nil
+	   "-fullname"
+	   "-cd" default-directory
+	   file
+	   (and corefile (list corefile)))
+    (set-process-filter (get-buffer-process (current-buffer)) 'sdcdb-filter)
+    (set-process-sentinel (get-buffer-process (current-buffer)) 'sdcdb-sentinel)
+    ;; XEmacs change: turn on sdcdb mode after setting up the proc filters
+    ;; for the benefit of shell-font.el
+    (sdcdb-mode)
+    (sdcdb-set-buffer)))
+
+;;;###autoload
+(defun sdcdb-with-core (file corefile)
+  "Debug a program using a corefile."
+  (interactive "fProgram to debug: \nfCore file to use: ")
+  (sdcdb file corefile))
+
+(defun sdcdb-set-buffer ()
+  (cond ((eq major-mode 'sdcdb-mode)
+	 (setq current-sdcdb-buffer (current-buffer))
+	 (if (featurep 'eos-toolbar)
+	     (set-specifier default-toolbar (cons (current-buffer)
+						  sdcdb-toolbar))))))
+
+
+;; This function is responsible for inserting output from SDCDB
+;; into the buffer.
+;; Aside from inserting the text, it notices and deletes
+;; each filename-and-line-number;
+;; that SDCDB prints to identify the selected frame.
+;; It records the filename and line number, and maybe displays that file.
+(defun sdcdb-filter (proc string)
+  (let ((inhibit-quit t))
+    (save-current-buffer
+     (set-buffer (process-buffer proc))
+     (if sdcdb-filter-accumulator
+	 (sdcdb-filter-accumulate-marker
+	  proc (concat sdcdb-filter-accumulator string))
+       (sdcdb-filter-scan-input proc string)))))
+
+(defun sdcdb-filter-accumulate-marker (proc string)
+  (setq sdcdb-filter-accumulator nil)
+  (if (> (length string) 1)
+      (if (= (aref string 1) ?\032)
+	  (let ((end (string-match "\n" string)))
+	    (if end
+		(progn
+		  (let* ((first-colon (string-match ":" string 2))
+			 (second-colon
+			  (string-match ":" string (1+ first-colon))))
+		    (setq sdcdb-last-frame
+			  (cons (substring string 2 first-colon)
+				(string-to-int
+				 (substring string (1+ first-colon)
+					    second-colon)))))
+		  (setq sdcdb-last-frame-displayed-p nil)
+		  (sdcdb-filter-scan-input proc
+					 (substring string (1+ end))))
+	      (setq sdcdb-filter-accumulator string)))
+	(sdcdb-filter-insert proc "\032")
+	(sdcdb-filter-scan-input proc (substring string 1)))
+    (setq sdcdb-filter-accumulator string)))
+
+(defun sdcdb-filter-scan-input (proc string)
+  (if (equal string "")
+      (setq sdcdb-filter-accumulator nil)
+    (let ((start (string-match "\032" string)))
+      (if start
+	  (progn (sdcdb-filter-insert proc (substring string 0 start))
+		 (sdcdb-filter-accumulate-marker proc
+					       (substring string start)))
+	(sdcdb-filter-insert proc string)))))
+
+(defun sdcdb-filter-insert (proc string)
+  (let ((moving (= (point) (process-mark proc)))
+	(output-after-point (< (point) (process-mark proc))))
+    (save-excursion
+      ;; Insert the text, moving the process-marker.
+      (goto-char (process-mark proc))
+      (insert-before-markers string)
+      (set-marker (process-mark proc) (point))
+      (sdcdb-maybe-delete-prompt)
+      ;; Check for a filename-and-line number.
+      (sdcdb-display-frame
+       ;; Don't display the specified file
+       ;; unless (1) point is at or after the position where output appears
+       ;; and (2) this buffer is on the screen.
+       (or output-after-point
+           (not (get-buffer-window (current-buffer))))
+       ;; Display a file only when a new filename-and-line-number appears.
+       t))
+    (if moving (goto-char (process-mark proc))))
+
+  (let (s)
+    (if (and (should-use-dialog-box-p)
+	     (setq s (or (string-match " (y or n) *\\'" string)
+			 (string-match " (yes or no) *\\'" string))))
+	(sdcdb-mouse-prompt-hack (substring string 0 s) (current-buffer))))
+  )
+
+(defun sdcdb-mouse-prompt-hack (prompt buffer)
+  (popup-dialog-box
+   (list prompt
+	 (vector "Yes"    (list 'sdcdb-mouse-prompt-hack-answer 't   buffer) t)
+	 (vector "No"     (list 'sdcdb-mouse-prompt-hack-answer 'nil buffer) t)
+	 nil
+	 (vector "Cancel" (list 'sdcdb-mouse-prompt-hack-answer 'nil buffer) t)
+	 )))
+
+(defun sdcdb-mouse-prompt-hack-answer (answer buffer)
+  (let ((b (current-buffer)))
+    (unwind-protect
+	(progn
+	  (set-buffer buffer)
+	  (goto-char (process-mark (get-buffer-process buffer)))
+	  (delete-region (point) (point-max))
+	  (insert (if answer "yes" "no"))
+	  (comint-send-input))
+      (set-buffer b))))
+
+(defun sdcdb-sentinel (proc msg)
+  (cond ((null (buffer-name (process-buffer proc)))
+	 ;; buffer killed
+	 ;; Stop displaying an arrow in a source file.
+	 ;(setq overlay-arrow-position nil) -- done by kill-buffer-hook
+	 (set-process-buffer proc nil))
+	((memq (process-status proc) '(signal exit))
+	 ;; Stop displaying an arrow in a source file.
+         (sdcdb-delete-arrow-extent)
+	 ;; Fix the mode line.
+	 (setq modeline-process
+	       (concat ": sdcdb " (symbol-name (process-status proc))))
+	 (let* ((obuf (current-buffer)))
+	   ;; save-excursion isn't the right thing if
+	   ;;  process-buffer is current-buffer
+	   (unwind-protect
+	       (progn
+		 ;; Write something in *compilation* and hack its mode line,
+		 (set-buffer (process-buffer proc))
+		 ;; Force mode line redisplay soon
+		 (set-buffer-modified-p (buffer-modified-p))
+		 (if (eobp)
+		     (insert ?\n mode-name " " msg)
+		   (save-excursion
+		     (goto-char (point-max))
+		     (insert ?\n mode-name " " msg)))
+		 ;; If buffer and mode line will show that the process
+		 ;; is dead, we can delete it now.  Otherwise it
+		 ;; will stay around until M-x list-processes.
+		 (delete-process proc))
+	     ;; Restore old buffer, but don't restore old point
+	     ;; if obuf is the sdcdb buffer.
+	     (set-buffer obuf))))))
+
+
+(defun sdcdb-refresh (&optional arg)
+  "Fix up a possibly garbled display, and redraw the arrow."
+  (interactive "P")
+  (recenter arg)
+  (sdcdb-display-frame))
+
+(defun sdcdb-display-frame (&optional nodisplay noauto)
+  "Find, obey and delete the last filename-and-line marker from SDCDB.
+The marker looks like \\032\\032FILENAME:LINE:CHARPOS\\n.
+Obeying it means displaying in another window the specified file and line."
+  (interactive)
+  (sdcdb-set-buffer)
+  (and sdcdb-last-frame (not nodisplay)
+       sdcdb-display-mode
+       (or (not sdcdb-last-frame-displayed-p) (not noauto))
+       (progn (sdcdb-display-line (car sdcdb-last-frame) (cdr sdcdb-last-frame))
+	      (setq sdcdb-last-frame-displayed-p t))))
+
+;; Make sure the file named TRUE-FILE is in a buffer that appears on the screen
+;; and that its line LINE is visible.
+;; Put the overlay-arrow on the line LINE in that buffer.
+
+(defun sdcdb-display-line (true-file line &optional select-method)
+  ;; FILE to display
+  ;; LINE number to highlight and make visible
+  ;; SELECT-METHOD 'source, 'debugger, or 'none.  (default is 'debugger)
+  (and (null select-method) (setq select-method 'debugger))
+  (let* ((pre-display-buffer-function nil) ; screw it, put it all in one screen
+	 (pop-up-windows t)
+	 (source-buffer (find-file-noselect true-file))
+	 (source-window (display-buffer source-buffer))
+	 (debugger-window (get-buffer-window current-sdcdb-buffer))
+         (extent sdcdb-arrow-extent)
+	 pos)
+    ;; XEmacs change: make sure we find a window displaying the source file
+    ;; even if we are already sitting in it when a breakpoint is hit.
+    ;; Otherwise the t argument to display-buffer will prevent it from being
+    ;; displayed.
+    (save-excursion 
+      (cond ((eq select-method 'debugger)
+	     ;; might not already be displayed
+	     (setq debugger-window (display-buffer current-sdcdb-buffer))
+	     (select-window debugger-window))
+	    ((eq select-method 'source)
+	     (select-window source-window))))
+    (and extent
+	 (not (eq (extent-object extent) source-buffer))
+	 (setq extent (delete-extent extent)))
+    (or extent
+        (progn
+          (setq extent (make-extent 1 1 source-buffer))
+          (set-extent-face extent 'sdcdb-arrow-face)
+	  (set-extent-begin-glyph extent sdcdb-arrow-glyph)
+          (set-extent-begin-glyph-layout extent 'whitespace)
+          (set-extent-priority extent 2000)
+          (setq sdcdb-arrow-extent extent)))
+    (save-current-buffer
+      (set-buffer source-buffer)
+      (save-restriction
+	(widen)
+	(goto-line line)
+	(set-window-point source-window (point))
+	(setq pos (point))
+        (end-of-line)
+        (set-extent-endpoints extent pos (point))
+        (run-hook-with-args 'sdcdb-arrow-extent-hooks extent))
+      (cond ((or (< pos (point-min)) (> pos (point-max)))
+	     (widen)
+	     (goto-char pos))))
+    ;; Added by Stig.  It caused lots of problems for several users
+    ;; and since its purpose is unclear it is getting commented out.
+    ;;(and debugger-window
+    ;; (set-window-point debugger-window pos))
+    ))
+
+(defun sdcdb-call (command)
+  "Invoke sdcdb COMMAND displaying source in other window."
+  (interactive)
+  (goto-char (point-max))
+  ;; Record info on the last prompt in the buffer and its position.
+  ;; This is used in  sdcdb-maybe-delete-prompt
+  ;; to prevent multiple prompts from accumulating.
+  (save-excursion
+    (goto-char (process-mark (get-buffer-process current-sdcdb-buffer)))
+    (let ((pt (point)))
+      (beginning-of-line)
+      (setq sdcdb-delete-prompt-marker
+	    (if (= (point) pt)
+		nil
+	      (list (point-marker) (- pt (point))
+		    (buffer-substring (point) pt))))))
+  (sdcdb-set-buffer)
+  (process-send-string (get-buffer-process current-sdcdb-buffer)
+	       (concat command "\n")))
+
+(defun sdcdb-maybe-delete-prompt ()
+  (if sdcdb-delete-prompt-marker
+      ;; Get the string that we used as the prompt before.
+      (let ((prompt (nth 2 sdcdb-delete-prompt-marker))
+	    (length (nth 1 sdcdb-delete-prompt-marker)))
+	;; Position after it.
+	(goto-char (+ (car sdcdb-delete-prompt-marker) length))
+	;; Delete any duplicates of it which follow right after.
+	(while (and (<= (+ (point) length) (point-max))
+		    (string= prompt
+			     (buffer-substring (point) (+ (point) length))))
+	  (delete-region (point) (+ (point) length)))
+	;; If that didn't take us to where output is arriving,
+	;; we have encountered something other than a prompt,
+	;; so stop trying to delete any more prompts.
+	(if (not (= (point)
+		    (process-mark (get-buffer-process current-sdcdb-buffer))))
+	    (progn
+	      (set-marker (car sdcdb-delete-prompt-marker) nil)
+	      (setq sdcdb-delete-prompt-marker nil))))))
+
+(defun sdcdb-break (temp)
+  "Set SDCDB breakpoint at this source line.  With ARG set temporary breakpoint."
+  (interactive "P")
+  (let* ((file-name (file-name-nondirectory buffer-file-name))
+	 (line (save-restriction
+		 (widen)
+		 (beginning-of-line)
+		 (1+ (count-lines 1 (point)))))
+	 (cmd (concat (if temp "tbreak " "break ") file-name ":"
+		      (int-to-string line))))
+    (set-buffer current-sdcdb-buffer)
+    (goto-char (process-mark (get-buffer-process current-sdcdb-buffer)))
+    (delete-region (point) (point-max))
+    (insert cmd)
+    (comint-send-input)
+    ;;(process-send-string (get-buffer-process current-sdcdb-buffer) cmd)
+    ))
+
+(defun sdcdb-clear ()
+  "Set SDCDB breakpoint at this source line."
+  (interactive)
+  (let* ((file-name (file-name-nondirectory buffer-file-name))
+	 (line (save-restriction
+		 (widen)
+		 (beginning-of-line)
+		 (1+ (count-lines 1 (point)))))
+	 (cmd (concat "clear " file-name ":"
+		      (int-to-string line))))
+    (set-buffer current-sdcdb-buffer)
+    (goto-char (process-mark (get-buffer-process current-sdcdb-buffer)))
+    (delete-region (point) (point-max))
+    (insert cmd)
+    (comint-send-input)
+    ;;(process-send-string (get-buffer-process current-sdcdb-buffer) cmd)
+    ))
+
+(defun sdcdb-read-address()
+  "Return a string containing the core-address found in the buffer at point."
+  (save-excursion
+   (let ((pt (point)) found begin)
+     (setq found (if (search-backward "0x" (- pt 7) t)(point)))
+     (cond (found (forward-char 2)
+		  (buffer-substring found
+				    (progn (re-search-forward "[^0-9a-f]")
+					   (forward-char -1)
+					   (point))))
+	   (t (setq begin (progn (re-search-backward "[^0-9]") (forward-char 1)
+				 (point)))
+	      (forward-char 1)
+	      (re-search-forward "[^0-9]")
+	      (forward-char -1)
+	      (buffer-substring begin (point)))))))
+
+
+(defvar sdcdb-commands nil
+  "List of strings or functions used by send-sdcdb-command.
+It is for customization by you.")
+
+(defun send-sdcdb-command (arg)
+
+  "This command reads the number where the cursor is positioned.  It
+ then inserts this ADDR at the end of the sdcdb buffer.  A numeric arg
+ selects the ARG'th member COMMAND of the list sdcdb-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 sdcdb-commands.  "
+
+
+  (interactive "P")
+  (let (comm addr)
+    (if arg (setq comm (nth arg sdcdb-commands)))
+    (setq addr (sdcdb-read-address))
+    (if (eq (current-buffer) current-sdcdb-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-sdcdb-buffer)
+    (goto-char (point-max))
+    (insert comm)))
+
+(fset 'sdcdb-control-c-subjob 'comint-interrupt-subjob)
+
+;(defun sdcdb-control-c-subjob ()
+;  "Send a Control-C to the subprocess."
+;  (interactive)
+;  (process-send-string (get-buffer-process (current-buffer))
+;		       "\C-c"))
+
+(defun sdcdb-toolbar-break ()
+  (interactive)
+  (save-excursion
+    (message (car sdcdb-last-frame))
+    (set-buffer (find-file-noselect (car sdcdb-last-frame)))
+    (sdcdb-break nil)))
+
+(defun sdcdb-toolbar-clear ()
+  (interactive)
+  (save-excursion
+    (message (car sdcdb-last-frame))
+    (set-buffer (find-file-noselect (car sdcdb-last-frame)))
+    (sdcdb-clear)))
+
+(provide 'sdcdb)
+
+;;; sdcdb.el ends here