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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) | |
1f393769 | 74 | tui_display_main (); |
2611b1a5 SC |
75 | |
76 | if (tui_target_new_objfile_chain) | |
77 | tui_target_new_objfile_chain (objfile); | |
78 | } | |
79 | ||
80 | static int | |
81 | tui_query_hook (const char * msg, va_list argp) | |
82 | { | |
83 | int retval; | |
84 | int ans2; | |
85 | int answer; | |
86 | ||
87 | /* Automatically answer "yes" if input is not from a terminal. */ | |
88 | if (!input_from_terminal_p ()) | |
89 | return 1; | |
90 | ||
91 | echo (); | |
92 | while (1) | |
93 | { | |
94 | wrap_here (""); /* Flush any buffered output */ | |
95 | gdb_flush (gdb_stdout); | |
96 | ||
97 | vfprintf_filtered (gdb_stdout, msg, argp); | |
98 | printf_filtered ("(y or n) "); | |
99 | ||
100 | wrap_here (""); | |
101 | gdb_flush (gdb_stdout); | |
102 | ||
103 | answer = tui_getc (stdin); | |
104 | clearerr (stdin); /* in case of C-d */ | |
105 | if (answer == EOF) /* C-d */ | |
106 | { | |
107 | retval = 1; | |
108 | break; | |
109 | } | |
110 | /* Eat rest of input line, to EOF or newline */ | |
111 | if (answer != '\n') | |
112 | do | |
113 | { | |
114 | ans2 = tui_getc (stdin); | |
115 | clearerr (stdin); | |
116 | } | |
117 | while (ans2 != EOF && ans2 != '\n' && ans2 != '\r'); | |
118 | ||
119 | if (answer >= 'a') | |
120 | answer -= 040; | |
121 | if (answer == 'Y') | |
122 | { | |
123 | retval = 1; | |
124 | break; | |
125 | } | |
126 | if (answer == 'N') | |
127 | { | |
128 | retval = 0; | |
129 | break; | |
130 | } | |
131 | printf_filtered ("Please answer y or n.\n"); | |
132 | } | |
133 | noecho (); | |
134 | return retval; | |
135 | } | |
136 | ||
137 | /* Prevent recursion of registers_changed_hook(). */ | |
138 | static int tui_refreshing_registers = 0; | |
139 | ||
140 | static void | |
141 | tui_registers_changed_hook (void) | |
142 | { | |
143 | struct frame_info *fi; | |
144 | ||
145 | fi = selected_frame; | |
146 | if (fi && tui_refreshing_registers == 0) | |
147 | { | |
148 | tui_refreshing_registers = 1; | |
149 | #if 0 | |
150 | tuiCheckDataValues (fi); | |
151 | #endif | |
152 | tui_refreshing_registers = 0; | |
153 | } | |
154 | } | |
155 | ||
156 | static void | |
157 | tui_register_changed_hook (int regno) | |
158 | { | |
159 | struct frame_info *fi; | |
160 | ||
161 | fi = selected_frame; | |
162 | if (fi && tui_refreshing_registers == 0) | |
163 | { | |
164 | tui_refreshing_registers = 1; | |
165 | tuiCheckDataValues (fi); | |
166 | tui_refreshing_registers = 0; | |
167 | } | |
168 | } | |
169 | ||
170 | extern struct breakpoint *breakpoint_chain; | |
171 | ||
172 | /* Find a breakpoint given its number. Returns null if not found. */ | |
173 | static struct breakpoint * | |
174 | get_breakpoint (int number) | |
175 | { | |
176 | struct breakpoint *bp; | |
177 | ||
178 | for (bp = breakpoint_chain; bp; bp = bp->next) | |
179 | { | |
180 | if (bp->number == number) | |
181 | return bp; | |
182 | } | |
183 | return 0; | |
184 | } | |
185 | ||
186 | /* Breakpoint creation hook. | |
187 | Update the screen to show the new breakpoint. */ | |
188 | static void | |
189 | tui_event_create_breakpoint (int number) | |
190 | { | |
191 | struct breakpoint *bp; | |
192 | ||
193 | bp = get_breakpoint (number); | |
194 | if (bp) | |
195 | { | |
196 | switch (bp->type) | |
197 | { | |
198 | case bp_breakpoint: | |
199 | case bp_hardware_breakpoint: | |
200 | tuiAllSetHasBreakAt (bp, 1); | |
201 | tuiUpdateAllExecInfos (); | |
202 | break; | |
203 | ||
204 | default: | |
205 | break; | |
206 | } | |
207 | } | |
208 | } | |
209 | ||
210 | /* Breakpoint deletion hook. | |
211 | Refresh the screen to update the breakpoint marks. */ | |
212 | static void | |
213 | tui_event_delete_breakpoint (int number) | |
214 | { | |
215 | struct breakpoint *bp; | |
216 | struct breakpoint *b; | |
217 | int clearIt; | |
218 | ||
219 | bp = get_breakpoint (number); | |
220 | if (bp == 0) | |
221 | return; | |
222 | ||
223 | /* Before turning off the visuals for the bp, check to see that | |
224 | there are no other bps at the same address. */ | |
225 | clearIt = 0; | |
226 | for (b = breakpoint_chain; b; b = b->next) | |
227 | { | |
228 | clearIt = (b == bp || b->address != bp->address); | |
229 | if (!clearIt) | |
230 | break; | |
231 | } | |
232 | ||
233 | if (clearIt) | |
234 | { | |
235 | tuiAllSetHasBreakAt (bp, 0); | |
236 | tuiUpdateAllExecInfos (); | |
237 | } | |
238 | } | |
239 | ||
240 | static void | |
241 | tui_event_modify_breakpoint (int number) | |
242 | { | |
243 | ; | |
244 | } | |
245 | ||
246 | static void | |
247 | tui_event_default (int number) | |
248 | { | |
249 | ; | |
250 | } | |
251 | ||
252 | static struct gdb_events *tui_old_event_hooks; | |
253 | ||
254 | static struct gdb_events tui_event_hooks = | |
255 | { | |
256 | tui_event_create_breakpoint, | |
257 | tui_event_delete_breakpoint, | |
258 | tui_event_modify_breakpoint, | |
259 | tui_event_default, | |
260 | tui_event_default, | |
261 | tui_event_default | |
262 | }; | |
263 | ||
264 | /* Called when going to wait for the target. | |
265 | Leave curses mode and setup program mode. */ | |
266 | static ptid_t | |
267 | tui_target_wait_hook (ptid_t pid, struct target_waitstatus *status) | |
268 | { | |
269 | ptid_t res; | |
270 | ||
271 | /* Leave tui mode (optional). */ | |
272 | #if 0 | |
273 | if (tui_active) | |
274 | { | |
275 | target_terminal_ours (); | |
276 | endwin (); | |
277 | target_terminal_inferior (); | |
278 | } | |
279 | #endif | |
280 | tui_target_has_run = 1; | |
281 | res = target_wait (pid, status); | |
282 | ||
283 | if (tui_active) | |
284 | { | |
285 | /* TODO: need to refresh (optional). */ | |
286 | } | |
287 | return res; | |
288 | } | |
289 | ||
290 | /* The selected frame has changed. This is happens after a target | |
291 | stop or when the user explicitly changes the frame (up/down/thread/...). */ | |
292 | static void | |
293 | tui_selected_frame_level_changed_hook (int level) | |
294 | { | |
295 | struct frame_info *fi; | |
296 | ||
297 | fi = selected_frame; | |
298 | /* Ensure that symbols for this frame are read in. Also, determine the | |
299 | source language of this frame, and switch to it if desired. */ | |
300 | if (fi) | |
301 | { | |
302 | struct symtab *s; | |
303 | ||
304 | s = find_pc_symtab (fi->pc); | |
305 | /* elz: this if here fixes the problem with the pc not being displayed | |
306 | in the tui asm layout, with no debug symbols. The value of s | |
307 | would be 0 here, and select_source_symtab would abort the | |
308 | command by calling the 'error' function */ | |
309 | if (s) | |
90949d06 SC |
310 | select_source_symtab (s); |
311 | ||
312 | /* Display the frame position (even if there is no symbols). */ | |
313 | tuiShowFrameInfo (fi); | |
2611b1a5 SC |
314 | |
315 | /* Refresh the register window if it's visible. */ | |
316 | if (tui_is_window_visible (DATA_WIN)) | |
317 | { | |
318 | tui_refreshing_registers = 1; | |
319 | tuiCheckDataValues (fi); | |
320 | tui_refreshing_registers = 0; | |
321 | } | |
322 | } | |
323 | } | |
324 | ||
325 | /* Called from print_frame_info to list the line we stopped in. */ | |
326 | static void | |
327 | tui_print_frame_info_listing_hook (struct symtab *s, int line, | |
328 | int stopline, int noerror) | |
329 | { | |
330 | select_source_symtab (s); | |
331 | tuiShowFrameInfo (selected_frame); | |
332 | } | |
333 | ||
334 | /* Install the TUI specific hooks. */ | |
335 | void | |
336 | tui_install_hooks (void) | |
337 | { | |
338 | target_wait_hook = tui_target_wait_hook; | |
339 | selected_frame_level_changed_hook = tui_selected_frame_level_changed_hook; | |
340 | print_frame_info_listing_hook = tui_print_frame_info_listing_hook; | |
341 | ||
342 | query_hook = tui_query_hook; | |
343 | ||
344 | /* Install the event hooks. */ | |
345 | tui_old_event_hooks = set_gdb_event_hooks (&tui_event_hooks); | |
346 | ||
347 | registers_changed_hook = tui_registers_changed_hook; | |
348 | register_changed_hook = tui_register_changed_hook; | |
349 | } | |
350 | ||
351 | /* Remove the TUI specific hooks. */ | |
352 | void | |
353 | tui_remove_hooks (void) | |
354 | { | |
355 | target_wait_hook = 0; | |
356 | selected_frame_level_changed_hook = 0; | |
357 | print_frame_info_listing_hook = 0; | |
358 | query_hook = 0; | |
359 | registers_changed_hook = 0; | |
360 | register_changed_hook = 0; | |
361 | ||
362 | /* Restore the previous event hooks. */ | |
363 | set_gdb_event_hooks (tui_old_event_hooks); | |
364 | } | |
365 | ||
366 | /* Cleanup the tui before exiting. */ | |
367 | static void | |
368 | tui_exit (void) | |
369 | { | |
370 | /* Disable the tui. Curses mode is left leaving the screen | |
371 | in a clean state (see endwin()). */ | |
372 | tui_disable (); | |
373 | } | |
374 | ||
375 | /* Initialize the tui by installing several gdb hooks, initializing | |
376 | the tui IO and preparing the readline with the kind binding. */ | |
377 | static void | |
378 | tui_init_hook (char *argv0) | |
379 | { | |
380 | /* Install exit handler to leave the screen in a good shape. */ | |
381 | atexit (tui_exit); | |
382 | ||
383 | initializeStaticData (); | |
384 | ||
385 | /* Install the permanent hooks. */ | |
386 | tui_target_new_objfile_chain = target_new_objfile_hook; | |
387 | target_new_objfile_hook = tui_new_objfile_hook; | |
388 | ||
389 | tui_initialize_io (); | |
390 | tui_initialize_readline (); | |
391 | ||
392 | /* Decide in which mode to start using GDB (based on -tui). */ | |
393 | if (tui_version) | |
394 | { | |
395 | tui_enable (); | |
396 | } | |
397 | } | |
398 | ||
399 | /* Initialize the tui. */ | |
400 | void | |
401 | _initialize_tui (void) | |
402 | { | |
403 | /* Setup initialization hook. */ | |
404 | init_ui_hook = tui_init_hook; | |
405 | } | |
406 |