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2611b1a5 | 1 | /* GDB hooks for TUI. |
f33c6cbf AC |
2 | |
3 | Copyright 2001, 2002 Free Software Foundation, Inc. | |
2611b1a5 SC |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
f33c6cbf AC |
22 | /* FIXME: cagney/2002-02-28: The GDB coding standard indicates that |
23 | "defs.h" should be included first. Unfortunatly some systems | |
24 | (currently Debian GNU/Linux) include the <stdbool.h> via <curses.h> | |
25 | and they clash with "bfd.h"'s definiton of true/false. The correct | |
26 | fix is to remove true/false from "bfd.h", however, until that | |
27 | happens, hack around it by including "config.h" and <curses.h> | |
28 | first. */ | |
29 | ||
4e8f7a8b DJ |
30 | #include "config.h" |
31 | #ifdef HAVE_NCURSES_H | |
32 | #include <ncurses.h> | |
33 | #else | |
34 | #ifdef HAVE_CURSES_H | |
35 | #include <curses.h> | |
36 | #endif | |
37 | #endif | |
38 | ||
2611b1a5 SC |
39 | #include "defs.h" |
40 | #include "symtab.h" | |
41 | #include "inferior.h" | |
42 | #include "command.h" | |
43 | #include "bfd.h" | |
44 | #include "symfile.h" | |
45 | #include "objfiles.h" | |
46 | #include "target.h" | |
47 | #include "gdbcore.h" | |
48 | #include "event-loop.h" | |
49 | #include "frame.h" | |
50 | #include "breakpoint.h" | |
51 | #include "gdb-events.h" | |
52 | #include <unistd.h> | |
53 | #include <fcntl.h> | |
54 | ||
55 | #include "tui.h" | |
56 | #include "tuiData.h" | |
57 | #include "tuiLayout.h" | |
58 | #include "tuiIO.h" | |
59 | #include "tuiRegs.h" | |
60 | #include "tuiWin.h" | |
61 | #include "tuiStack.h" | |
62 | #include "tuiDataWin.h" | |
63 | #include "tuiSourceWin.h" | |
64 | ||
65 | int tui_target_has_run = 0; | |
66 | ||
67 | static void (* tui_target_new_objfile_chain) (struct objfile*); | |
68 | extern void (*selected_frame_level_changed_hook) (int); | |
69 | ||
70 | static void | |
71 | tui_new_objfile_hook (struct objfile* objfile) | |
72 | { | |
73 | if (tui_active) | |
74 | { | |
75 | tuiDisplayMainFunction (); | |
76 | } | |
77 | ||
78 | if (tui_target_new_objfile_chain) | |
79 | tui_target_new_objfile_chain (objfile); | |
80 | } | |
81 | ||
82 | static int | |
83 | tui_query_hook (const char * msg, va_list argp) | |
84 | { | |
85 | int retval; | |
86 | int ans2; | |
87 | int answer; | |
88 | ||
89 | /* Automatically answer "yes" if input is not from a terminal. */ | |
90 | if (!input_from_terminal_p ()) | |
91 | return 1; | |
92 | ||
93 | echo (); | |
94 | while (1) | |
95 | { | |
96 | wrap_here (""); /* Flush any buffered output */ | |
97 | gdb_flush (gdb_stdout); | |
98 | ||
99 | vfprintf_filtered (gdb_stdout, msg, argp); | |
100 | printf_filtered ("(y or n) "); | |
101 | ||
102 | wrap_here (""); | |
103 | gdb_flush (gdb_stdout); | |
104 | ||
105 | answer = tui_getc (stdin); | |
106 | clearerr (stdin); /* in case of C-d */ | |
107 | if (answer == EOF) /* C-d */ | |
108 | { | |
109 | retval = 1; | |
110 | break; | |
111 | } | |
112 | /* Eat rest of input line, to EOF or newline */ | |
113 | if (answer != '\n') | |
114 | do | |
115 | { | |
116 | ans2 = tui_getc (stdin); | |
117 | clearerr (stdin); | |
118 | } | |
119 | while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); | |
120 | ||
121 | if (answer >= 'a') | |
122 | answer -= 040; | |
123 | if (answer == 'Y') | |
124 | { | |
125 | retval = 1; | |
126 | break; | |
127 | } | |
128 | if (answer == 'N') | |
129 | { | |
130 | retval = 0; | |
131 | break; | |
132 | } | |
133 | printf_filtered ("Please answer y or n.\n"); | |
134 | } | |
135 | noecho (); | |
136 | return retval; | |
137 | } | |
138 | ||
139 | /* Prevent recursion of registers_changed_hook(). */ | |
140 | static int tui_refreshing_registers = 0; | |
141 | ||
142 | static void | |
143 | tui_registers_changed_hook (void) | |
144 | { | |
145 | struct frame_info *fi; | |
146 | ||
147 | fi = selected_frame; | |
148 | if (fi && tui_refreshing_registers == 0) | |
149 | { | |
150 | tui_refreshing_registers = 1; | |
151 | #if 0 | |
152 | tuiCheckDataValues (fi); | |
153 | #endif | |
154 | tui_refreshing_registers = 0; | |
155 | } | |
156 | } | |
157 | ||
158 | static void | |
159 | tui_register_changed_hook (int regno) | |
160 | { | |
161 | struct frame_info *fi; | |
162 | ||
163 | fi = selected_frame; | |
164 | if (fi && tui_refreshing_registers == 0) | |
165 | { | |
166 | tui_refreshing_registers = 1; | |
167 | tuiCheckDataValues (fi); | |
168 | tui_refreshing_registers = 0; | |
169 | } | |
170 | } | |
171 | ||
172 | extern struct breakpoint *breakpoint_chain; | |
173 | ||
174 | /* Find a breakpoint given its number. Returns null if not found. */ | |
175 | static struct breakpoint * | |
176 | get_breakpoint (int number) | |
177 | { | |
178 | struct breakpoint *bp; | |
179 | ||
180 | for (bp = breakpoint_chain; bp; bp = bp->next) | |
181 | { | |
182 | if (bp->number == number) | |
183 | return bp; | |
184 | } | |
185 | return 0; | |
186 | } | |
187 | ||
188 | /* Breakpoint creation hook. | |
189 | Update the screen to show the new breakpoint. */ | |
190 | static void | |
191 | tui_event_create_breakpoint (int number) | |
192 | { | |
193 | struct breakpoint *bp; | |
194 | ||
195 | bp = get_breakpoint (number); | |
196 | if (bp) | |
197 | { | |
198 | switch (bp->type) | |
199 | { | |
200 | case bp_breakpoint: | |
201 | case bp_hardware_breakpoint: | |
202 | tuiAllSetHasBreakAt (bp, 1); | |
203 | tuiUpdateAllExecInfos (); | |
204 | break; | |
205 | ||
206 | default: | |
207 | break; | |
208 | } | |
209 | } | |
210 | } | |
211 | ||
212 | /* Breakpoint deletion hook. | |
213 | Refresh the screen to update the breakpoint marks. */ | |
214 | static void | |
215 | tui_event_delete_breakpoint (int number) | |
216 | { | |
217 | struct breakpoint *bp; | |
218 | struct breakpoint *b; | |
219 | int clearIt; | |
220 | ||
221 | bp = get_breakpoint (number); | |
222 | if (bp == 0) | |
223 | return; | |
224 | ||
225 | /* Before turning off the visuals for the bp, check to see that | |
226 | there are no other bps at the same address. */ | |
227 | clearIt = 0; | |
228 | for (b = breakpoint_chain; b; b = b->next) | |
229 | { | |
230 | clearIt = (b == bp || b->address != bp->address); | |
231 | if (!clearIt) | |
232 | break; | |
233 | } | |
234 | ||
235 | if (clearIt) | |
236 | { | |
237 | tuiAllSetHasBreakAt (bp, 0); | |
238 | tuiUpdateAllExecInfos (); | |
239 | } | |
240 | } | |
241 | ||
242 | static void | |
243 | tui_event_modify_breakpoint (int number) | |
244 | { | |
245 | ; | |
246 | } | |
247 | ||
248 | static void | |
249 | tui_event_default (int number) | |
250 | { | |
251 | ; | |
252 | } | |
253 | ||
254 | static struct gdb_events *tui_old_event_hooks; | |
255 | ||
256 | static struct gdb_events tui_event_hooks = | |
257 | { | |
258 | tui_event_create_breakpoint, | |
259 | tui_event_delete_breakpoint, | |
260 | tui_event_modify_breakpoint, | |
261 | tui_event_default, | |
262 | tui_event_default, | |
263 | tui_event_default | |
264 | }; | |
265 | ||
266 | /* Called when going to wait for the target. | |
267 | Leave curses mode and setup program mode. */ | |
268 | static ptid_t | |
269 | tui_target_wait_hook (ptid_t pid, struct target_waitstatus *status) | |
270 | { | |
271 | ptid_t res; | |
272 | ||
273 | /* Leave tui mode (optional). */ | |
274 | #if 0 | |
275 | if (tui_active) | |
276 | { | |
277 | target_terminal_ours (); | |
278 | endwin (); | |
279 | target_terminal_inferior (); | |
280 | } | |
281 | #endif | |
282 | tui_target_has_run = 1; | |
283 | res = target_wait (pid, status); | |
284 | ||
285 | if (tui_active) | |
286 | { | |
287 | /* TODO: need to refresh (optional). */ | |
288 | } | |
289 | return res; | |
290 | } | |
291 | ||
292 | /* The selected frame has changed. This is happens after a target | |
293 | stop or when the user explicitly changes the frame (up/down/thread/...). */ | |
294 | static void | |
295 | tui_selected_frame_level_changed_hook (int level) | |
296 | { | |
297 | struct frame_info *fi; | |
298 | ||
299 | fi = selected_frame; | |
300 | /* Ensure that symbols for this frame are read in. Also, determine the | |
301 | source language of this frame, and switch to it if desired. */ | |
302 | if (fi) | |
303 | { | |
304 | struct symtab *s; | |
305 | ||
306 | s = find_pc_symtab (fi->pc); | |
307 | /* elz: this if here fixes the problem with the pc not being displayed | |
308 | in the tui asm layout, with no debug symbols. The value of s | |
309 | would be 0 here, and select_source_symtab would abort the | |
310 | command by calling the 'error' function */ | |
311 | if (s) | |
312 | { | |
313 | select_source_symtab (s); | |
314 | tuiShowFrameInfo (fi); | |
315 | } | |
316 | ||
317 | /* Refresh the register window if it's visible. */ | |
318 | if (tui_is_window_visible (DATA_WIN)) | |
319 | { | |
320 | tui_refreshing_registers = 1; | |
321 | tuiCheckDataValues (fi); | |
322 | tui_refreshing_registers = 0; | |
323 | } | |
324 | } | |
325 | } | |
326 | ||
327 | /* Called from print_frame_info to list the line we stopped in. */ | |
328 | static void | |
329 | tui_print_frame_info_listing_hook (struct symtab *s, int line, | |
330 | int stopline, int noerror) | |
331 | { | |
332 | select_source_symtab (s); | |
333 | tuiShowFrameInfo (selected_frame); | |
334 | } | |
335 | ||
336 | /* Install the TUI specific hooks. */ | |
337 | void | |
338 | tui_install_hooks (void) | |
339 | { | |
340 | target_wait_hook = tui_target_wait_hook; | |
341 | selected_frame_level_changed_hook = tui_selected_frame_level_changed_hook; | |
342 | print_frame_info_listing_hook = tui_print_frame_info_listing_hook; | |
343 | ||
344 | query_hook = tui_query_hook; | |
345 | ||
346 | /* Install the event hooks. */ | |
347 | tui_old_event_hooks = set_gdb_event_hooks (&tui_event_hooks); | |
348 | ||
349 | registers_changed_hook = tui_registers_changed_hook; | |
350 | register_changed_hook = tui_register_changed_hook; | |
351 | } | |
352 | ||
353 | /* Remove the TUI specific hooks. */ | |
354 | void | |
355 | tui_remove_hooks (void) | |
356 | { | |
357 | target_wait_hook = 0; | |
358 | selected_frame_level_changed_hook = 0; | |
359 | print_frame_info_listing_hook = 0; | |
360 | query_hook = 0; | |
361 | registers_changed_hook = 0; | |
362 | register_changed_hook = 0; | |
363 | ||
364 | /* Restore the previous event hooks. */ | |
365 | set_gdb_event_hooks (tui_old_event_hooks); | |
366 | } | |
367 | ||
368 | /* Cleanup the tui before exiting. */ | |
369 | static void | |
370 | tui_exit (void) | |
371 | { | |
372 | /* Disable the tui. Curses mode is left leaving the screen | |
373 | in a clean state (see endwin()). */ | |
374 | tui_disable (); | |
375 | } | |
376 | ||
377 | /* Initialize the tui by installing several gdb hooks, initializing | |
378 | the tui IO and preparing the readline with the kind binding. */ | |
379 | static void | |
380 | tui_init_hook (char *argv0) | |
381 | { | |
382 | /* Install exit handler to leave the screen in a good shape. */ | |
383 | atexit (tui_exit); | |
384 | ||
385 | initializeStaticData (); | |
386 | ||
387 | /* Install the permanent hooks. */ | |
388 | tui_target_new_objfile_chain = target_new_objfile_hook; | |
389 | target_new_objfile_hook = tui_new_objfile_hook; | |
390 | ||
391 | tui_initialize_io (); | |
392 | tui_initialize_readline (); | |
393 | ||
394 | /* Decide in which mode to start using GDB (based on -tui). */ | |
395 | if (tui_version) | |
396 | { | |
397 | tui_enable (); | |
398 | } | |
399 | } | |
400 | ||
401 | /* Initialize the tui. */ | |
402 | void | |
403 | _initialize_tui (void) | |
404 | { | |
405 | /* Setup initialization hook. */ | |
406 | init_ui_hook = tui_init_hook; | |
407 | } | |
408 |