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