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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [gdb/] [tui/] [tui.c] - Blame information for rev 157

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1 24 jeremybenn
/* General functions for the WDB TUI.
2
 
3
   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008
4
   Free Software Foundation, Inc.
5
 
6
   Contributed by Hewlett-Packard Company.
7
 
8
   This file is part of GDB.
9
 
10
   This program is free software; you can redistribute it and/or modify
11
   it under the terms of the GNU General Public License as published by
12
   the Free Software Foundation; either version 3 of the License, or
13
   (at your option) any later version.
14
 
15
   This program is distributed in the hope that it will be useful,
16
   but WITHOUT ANY WARRANTY; without even the implied warranty of
17
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18
   GNU General Public License for more details.
19
 
20
   You should have received a copy of the GNU General Public License
21
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
22
 
23
#include "defs.h"
24
#include "gdbcmd.h"
25
#include "tui/tui.h"
26
#include "tui/tui-hooks.h"
27
#include "tui/tui-data.h"
28
#include "tui/tui-layout.h"
29
#include "tui/tui-io.h"
30
#include "tui/tui-regs.h"
31
#include "tui/tui-stack.h"
32
#include "tui/tui-win.h"
33
#include "tui/tui-winsource.h"
34
#include "tui/tui-windata.h"
35
#include "target.h"
36
#include "frame.h"
37
#include "breakpoint.h"
38
#include "inferior.h"
39
#include "symtab.h"
40
#include "source.h"
41
 
42
#include <stdio.h>
43
#include <stdlib.h>
44
#include <ctype.h>
45
#include <signal.h>
46
#include <fcntl.h>
47
#if 0
48
#include <termio.h>
49
#endif
50
#include <setjmp.h>
51
 
52
#include "gdb_curses.h"
53
 
54
/* This redefines CTRL if it is not already defined, so it must come
55
   after terminal state releated include files like <term.h> and
56
   "gdb_curses.h".  */
57
#include "readline/readline.h"
58
 
59
/* Tells whether the TUI is active or not.  */
60
int tui_active = 0;
61
static int tui_finish_init = 1;
62
 
63
enum tui_key_mode tui_current_key_mode = TUI_COMMAND_MODE;
64
 
65
struct tui_char_command
66
{
67
  unsigned char key;
68
  const char *cmd;
69
};
70
 
71
/* Key mapping to gdb commands when the TUI is using the single key
72
   mode.  */
73
static const struct tui_char_command tui_commands[] = {
74
  { 'c', "continue" },
75
  { 'd', "down" },
76
  { 'f', "finish" },
77
  { 'n', "next" },
78
  { 'r', "run" },
79
  { 's', "step" },
80
  { 'u', "up" },
81
  { 'v', "info locals" },
82
  { 'w', "where" },
83
  { 0, 0 },
84
};
85
 
86
static Keymap tui_keymap;
87
static Keymap tui_readline_standard_keymap;
88
 
89
/* TUI readline command.
90
   Switch the output mode between TUI/standard gdb.  */
91
static int
92
tui_rl_switch_mode (int notused1, int notused2)
93
{
94
  if (tui_active)
95
    {
96
      tui_disable ();
97
      rl_prep_terminal (0);
98
    }
99
  else
100
    {
101
      rl_deprep_terminal ();
102
      tui_enable ();
103
    }
104
 
105
  /* Clear the readline in case switching occurred in middle of
106
     something.  */
107
  if (rl_end)
108
    rl_kill_text (0, rl_end);
109
 
110
  /* Since we left the curses mode, the terminal mode is restored to
111
     some previous state.  That state may not be suitable for readline
112
     to work correctly (it may be restored in line mode).  We force an
113
     exit of the current readline so that readline is re-entered and
114
     it will be able to setup the terminal for its needs.  By
115
     re-entering in readline, we also redisplay its prompt in the
116
     non-curses mode.  */
117
  rl_newline (1, '\n');
118
 
119
  /* Make sure the \n we are returning does not repeat the last
120
     command.  */
121
  dont_repeat ();
122
  return 0;
123
}
124
 
125
/* TUI readline command.
126
   Change the TUI layout to show a next layout.
127
   This function is bound to CTRL-X 2.  It is intended to provide
128
   a functionality close to the Emacs split-window command.  We
129
   always show two windows (src+asm), (src+regs) or (asm+regs).  */
130
static int
131
tui_rl_change_windows (int notused1, int notused2)
132
{
133
  if (!tui_active)
134
    tui_rl_switch_mode (0 /* notused */, 0 /* notused */);
135
 
136
  if (tui_active)
137
    {
138
      enum tui_layout_type new_layout;
139
      enum tui_register_display_type regs_type = TUI_UNDEFINED_REGS;
140
 
141
      new_layout = tui_current_layout ();
142
 
143
      /* Select a new layout to have a rolling layout behavior with
144
         always two windows (except when undefined).  */
145
      switch (new_layout)
146
        {
147
        case SRC_COMMAND:
148
          new_layout = SRC_DISASSEM_COMMAND;
149
          break;
150
 
151
        case DISASSEM_COMMAND:
152
          new_layout = SRC_DISASSEM_COMMAND;
153
          break;
154
 
155
        case SRC_DATA_COMMAND:
156
          new_layout = SRC_DISASSEM_COMMAND;
157
          break;
158
 
159
        case SRC_DISASSEM_COMMAND:
160
          new_layout = DISASSEM_DATA_COMMAND;
161
          break;
162
 
163
        case DISASSEM_DATA_COMMAND:
164
          new_layout = SRC_DATA_COMMAND;
165
          break;
166
 
167
        default:
168
          new_layout = SRC_COMMAND;
169
          break;
170
        }
171
      tui_set_layout (new_layout, regs_type);
172
    }
173
  return 0;
174
}
175
 
176
/* TUI readline command.
177
   Delete the second TUI window to only show one.  */
178
static int
179
tui_rl_delete_other_windows (int notused1, int notused2)
180
{
181
  if (!tui_active)
182
    tui_rl_switch_mode (0 /* notused */, 0 /* notused */);
183
 
184
  if (tui_active)
185
    {
186
      enum tui_layout_type new_layout;
187
      enum tui_register_display_type regs_type = TUI_UNDEFINED_REGS;
188
 
189
      new_layout = tui_current_layout ();
190
 
191
      /* Kill one window.  */
192
      switch (new_layout)
193
        {
194
        case SRC_COMMAND:
195
        case SRC_DATA_COMMAND:
196
        case SRC_DISASSEM_COMMAND:
197
        default:
198
          new_layout = SRC_COMMAND;
199
          break;
200
 
201
        case DISASSEM_COMMAND:
202
        case DISASSEM_DATA_COMMAND:
203
          new_layout = DISASSEM_COMMAND;
204
          break;
205
        }
206
      tui_set_layout (new_layout, regs_type);
207
    }
208
  return 0;
209
}
210
 
211
/* TUI readline command.
212
   Switch the active window to give the focus to a next window.  */
213
static int
214
tui_rl_other_window (int count, int key)
215
{
216
  struct tui_win_info *win_info;
217
 
218
  if (!tui_active)
219
    tui_rl_switch_mode (0 /* notused */, 0 /* notused */);
220
 
221
  win_info = tui_next_win (tui_win_with_focus ());
222
  if (win_info)
223
    {
224
      tui_set_win_focus_to (win_info);
225
      if (TUI_DATA_WIN && TUI_DATA_WIN->generic.is_visible)
226
        tui_refresh_data_win ();
227
      keypad (TUI_CMD_WIN->generic.handle, (win_info != TUI_CMD_WIN));
228
    }
229
  return 0;
230
}
231
 
232
/* TUI readline command.
233
   Execute the gdb command bound to the specified key.  */
234
static int
235
tui_rl_command_key (int count, int key)
236
{
237
  int i;
238
 
239
  reinitialize_more_filter ();
240
  for (i = 0; tui_commands[i].cmd; i++)
241
    {
242
      if (tui_commands[i].key == key)
243
        {
244
          /* Must save the command because it can be modified by
245
             execute_command.  */
246
          char *cmd = alloca (strlen (tui_commands[i].cmd) + 1);
247
          strcpy (cmd, tui_commands[i].cmd);
248
          execute_command (cmd, TRUE);
249
          return 0;
250
        }
251
    }
252
  return 0;
253
}
254
 
255
/* TUI readline command.
256
   Temporarily leave the TUI SingleKey mode to allow editing
257
   a gdb command with the normal readline.  Once the command
258
   is executed, the TUI SingleKey mode is installed back.  */
259
static int
260
tui_rl_command_mode (int count, int key)
261
{
262
  tui_set_key_mode (TUI_ONE_COMMAND_MODE);
263
  return rl_insert (count, key);
264
}
265
 
266
/* TUI readline command.
267
   Switch between TUI SingleKey mode and gdb readline editing.  */
268
static int
269
tui_rl_next_keymap (int notused1, int notused2)
270
{
271
  if (!tui_active)
272
    tui_rl_switch_mode (0 /* notused */, 0 /* notused */);
273
 
274
  tui_set_key_mode (tui_current_key_mode == TUI_COMMAND_MODE
275
                    ? TUI_SINGLE_KEY_MODE : TUI_COMMAND_MODE);
276
  return 0;
277
}
278
 
279
/* Readline hook to redisplay ourself the gdb prompt.
280
   In the SingleKey mode, the prompt is not printed so that
281
   the command window is cleaner.  It will be displayed if
282
   we temporarily leave the SingleKey mode.  */
283
static int
284
tui_rl_startup_hook (void)
285
{
286
  rl_already_prompted = 1;
287
  if (tui_current_key_mode != TUI_COMMAND_MODE)
288
    tui_set_key_mode (TUI_SINGLE_KEY_MODE);
289
  tui_redisplay_readline ();
290
  return 0;
291
}
292
 
293
/* Change the TUI key mode by installing the appropriate readline
294
   keymap.  */
295
void
296
tui_set_key_mode (enum tui_key_mode mode)
297
{
298
  tui_current_key_mode = mode;
299
  rl_set_keymap (mode == TUI_SINGLE_KEY_MODE
300
                 ? tui_keymap : tui_readline_standard_keymap);
301
  tui_show_locator_content ();
302
}
303
 
304
/* Initialize readline and configure the keymap for the switching
305
   key shortcut.  */
306
void
307
tui_initialize_readline (void)
308
{
309
  int i;
310
  Keymap tui_ctlx_keymap;
311
 
312
  rl_initialize ();
313
 
314
  rl_add_defun ("tui-switch-mode", tui_rl_switch_mode, -1);
315
  rl_add_defun ("gdb-command", tui_rl_command_key, -1);
316
  rl_add_defun ("next-keymap", tui_rl_next_keymap, -1);
317
 
318
  tui_keymap = rl_make_bare_keymap ();
319
  tui_ctlx_keymap = rl_make_bare_keymap ();
320
  tui_readline_standard_keymap = rl_get_keymap ();
321
 
322
  for (i = 0; tui_commands[i].cmd; i++)
323
    rl_bind_key_in_map (tui_commands[i].key, tui_rl_command_key, tui_keymap);
324
 
325
  rl_generic_bind (ISKMAP, "\\C-x", (char*) tui_ctlx_keymap, tui_keymap);
326
 
327
  /* Bind all other keys to tui_rl_command_mode so that we switch
328
     temporarily from SingleKey mode and can enter a gdb command.  */
329
  for (i = ' '; i < 0x7f; i++)
330
    {
331
      int j;
332
 
333
      for (j = 0; tui_commands[j].cmd; j++)
334
        if (tui_commands[j].key == i)
335
          break;
336
 
337
      if (tui_commands[j].cmd)
338
        continue;
339
 
340
      rl_bind_key_in_map (i, tui_rl_command_mode, tui_keymap);
341
    }
342
 
343
  rl_bind_key_in_map ('a', tui_rl_switch_mode, emacs_ctlx_keymap);
344
  rl_bind_key_in_map ('a', tui_rl_switch_mode, tui_ctlx_keymap);
345
  rl_bind_key_in_map ('A', tui_rl_switch_mode, emacs_ctlx_keymap);
346
  rl_bind_key_in_map ('A', tui_rl_switch_mode, tui_ctlx_keymap);
347
  rl_bind_key_in_map (CTRL ('A'), tui_rl_switch_mode, emacs_ctlx_keymap);
348
  rl_bind_key_in_map (CTRL ('A'), tui_rl_switch_mode, tui_ctlx_keymap);
349
  rl_bind_key_in_map ('1', tui_rl_delete_other_windows, emacs_ctlx_keymap);
350
  rl_bind_key_in_map ('1', tui_rl_delete_other_windows, tui_ctlx_keymap);
351
  rl_bind_key_in_map ('2', tui_rl_change_windows, emacs_ctlx_keymap);
352
  rl_bind_key_in_map ('2', tui_rl_change_windows, tui_ctlx_keymap);
353
  rl_bind_key_in_map ('o', tui_rl_other_window, emacs_ctlx_keymap);
354
  rl_bind_key_in_map ('o', tui_rl_other_window, tui_ctlx_keymap);
355
  rl_bind_key_in_map ('q', tui_rl_next_keymap, tui_keymap);
356
  rl_bind_key_in_map ('s', tui_rl_next_keymap, emacs_ctlx_keymap);
357
  rl_bind_key_in_map ('s', tui_rl_next_keymap, tui_ctlx_keymap);
358
}
359
 
360
/* Enter in the tui mode (curses).
361
   When in normal mode, it installs the tui hooks in gdb, redirects
362
   the gdb output, configures the readline to work in tui mode.
363
   When in curses mode, it does nothing.  */
364
void
365
tui_enable (void)
366
{
367
  if (tui_active)
368
    return;
369
 
370
  /* To avoid to initialize curses when gdb starts, there is a defered
371
     curses initialization.  This initialization is made only once
372
     and the first time the curses mode is entered.  */
373
  if (tui_finish_init)
374
    {
375
      WINDOW *w;
376
 
377
      w = initscr ();
378
 
379
      cbreak ();
380
      noecho ();
381
      /* timeout (1); */
382
      nodelay(w, FALSE);
383
      nl();
384
      keypad (w, TRUE);
385
      rl_initialize ();
386
      tui_set_term_height_to (LINES);
387
      tui_set_term_width_to (COLS);
388
      def_prog_mode ();
389
 
390
      tui_show_frame_info (0);
391
      tui_set_layout (SRC_COMMAND, TUI_UNDEFINED_REGS);
392
      tui_set_win_focus_to (TUI_SRC_WIN);
393
      keypad (TUI_CMD_WIN->generic.handle, TRUE);
394
      wrefresh (TUI_CMD_WIN->generic.handle);
395
      tui_finish_init = 0;
396
    }
397
  else
398
    {
399
     /* Save the current gdb setting of the terminal.
400
        Curses will restore this state when endwin() is called.  */
401
     def_shell_mode ();
402
     clearok (stdscr, TRUE);
403
   }
404
 
405
  /* Install the TUI specific hooks.  */
406
  tui_install_hooks ();
407
  rl_startup_hook = tui_rl_startup_hook;
408
 
409
  tui_update_variables ();
410
 
411
  tui_setup_io (1);
412
 
413
  tui_active = 1;
414
  if (deprecated_safe_get_selected_frame ())
415
     tui_show_frame_info (deprecated_safe_get_selected_frame ());
416
 
417
  /* Restore TUI keymap.  */
418
  tui_set_key_mode (tui_current_key_mode);
419
  tui_refresh_all_win ();
420
 
421
  /* Update gdb's knowledge of its terminal.  */
422
  target_terminal_save_ours ();
423
  tui_update_gdb_sizes ();
424
}
425
 
426
/* Leave the tui mode.
427
   Remove the tui hooks and configure the gdb output and readline
428
   back to their original state.  The curses mode is left so that
429
   the terminal setting is restored to the point when we entered.  */
430
void
431
tui_disable (void)
432
{
433
  if (!tui_active)
434
    return;
435
 
436
  /* Restore initial readline keymap.  */
437
  rl_set_keymap (tui_readline_standard_keymap);
438
 
439
  /* Remove TUI hooks.  */
440
  tui_remove_hooks ();
441
  rl_startup_hook = 0;
442
  rl_already_prompted = 0;
443
 
444
  /* Leave curses and restore previous gdb terminal setting.  */
445
  endwin ();
446
 
447
  /* gdb terminal has changed, update gdb internal copy of it
448
     so that terminal management with the inferior works.  */
449
  tui_setup_io (0);
450
 
451
  /* Update gdb's knowledge of its terminal.  */
452
  target_terminal_save_ours ();
453
 
454
  tui_active = 0;
455
  tui_update_gdb_sizes ();
456
}
457
 
458
void
459
strcat_to_buf (char *buf, int buflen,
460
               const char *item_to_add)
461
{
462
  if (item_to_add != (char *) NULL && buf != (char *) NULL)
463
    {
464
      if ((strlen (buf) + strlen (item_to_add)) <= buflen)
465
        strcat (buf, item_to_add);
466
      else
467
        strncat (buf, item_to_add, (buflen - strlen (buf)));
468
    }
469
}
470
 
471
#if 0
472
/* Solaris <sys/termios.h> defines CTRL.  */
473
#ifndef CTRL
474
#define CTRL(x)         (x & ~0140)
475
#endif
476
 
477
#define FILEDES         2
478
#define CHK(val, dft)   (val<=0 ? dft : val)
479
 
480
static void
481
tui_reset (void)
482
{
483
  struct termio mode;
484
 
485
  /* Reset the teletype mode bits to a sensible state.
486
     Copied tset.c.  */
487
#if defined (TIOCGETC)
488
  struct tchars tbuf;
489
#endif /* TIOCGETC */
490
#ifdef UCB_NTTY
491
  struct ltchars ltc;
492
 
493
  if (ldisc == NTTYDISC)
494
    {
495
      ioctl (FILEDES, TIOCGLTC, &ltc);
496
      ltc.t_suspc = CHK (ltc.t_suspc, CTRL ('Z'));
497
      ltc.t_dsuspc = CHK (ltc.t_dsuspc, CTRL ('Y'));
498
      ltc.t_rprntc = CHK (ltc.t_rprntc, CTRL ('R'));
499
      ltc.t_flushc = CHK (ltc.t_flushc, CTRL ('O'));
500
      ltc.t_werasc = CHK (ltc.t_werasc, CTRL ('W'));
501
      ltc.t_lnextc = CHK (ltc.t_lnextc, CTRL ('V'));
502
      ioctl (FILEDES, TIOCSLTC, &ltc);
503
    }
504
#endif /* UCB_NTTY */
505
#ifdef TIOCGETC
506
  ioctl (FILEDES, TIOCGETC, &tbuf);
507
  tbuf.t_intrc = CHK (tbuf.t_intrc, CTRL ('?'));
508
  tbuf.t_quitc = CHK (tbuf.t_quitc, CTRL ('\\'));
509
  tbuf.t_startc = CHK (tbuf.t_startc, CTRL ('Q'));
510
  tbuf.t_stopc = CHK (tbuf.t_stopc, CTRL ('S'));
511
  tbuf.t_eofc = CHK (tbuf.t_eofc, CTRL ('D'));
512
  /* brkc is left alone.  */
513
  ioctl (FILEDES, TIOCSETC, &tbuf);
514
#endif /* TIOCGETC */
515
  mode.sg_flags &= ~(RAW
516
#ifdef CBREAK
517
                     | CBREAK
518
#endif /* CBREAK */
519
                     | VTDELAY | ALLDELAY);
520
  mode.sg_flags |= XTABS | ECHO | CRMOD | ANYP;
521
 
522
  return;
523
}
524
#endif
525
 
526
void
527
tui_show_source (const char *file, int line)
528
{
529
  struct symtab_and_line cursal = get_current_source_symtab_and_line ();
530
  /* Make sure that the source window is displayed.  */
531
  tui_add_win_to_layout (SRC_WIN);
532
 
533
  tui_update_source_windows_with_line (cursal.symtab, line);
534
  tui_update_locator_filename (file);
535
}
536
 
537
void
538
tui_show_assembly (CORE_ADDR addr)
539
{
540
  tui_add_win_to_layout (DISASSEM_WIN);
541
  tui_update_source_windows_with_addr (addr);
542
}
543
 
544
int
545
tui_is_window_visible (enum tui_win_type type)
546
{
547
  if (tui_active == 0)
548
    return 0;
549
 
550
  if (tui_win_list[type] == 0)
551
    return 0;
552
 
553
  return tui_win_list[type]->generic.is_visible;
554
}
555
 
556
int
557
tui_get_command_dimension (unsigned int *width,
558
                           unsigned int *height)
559
{
560
  if (!tui_active || (TUI_CMD_WIN == NULL))
561
    {
562
      return 0;
563
    }
564
 
565
  *width = TUI_CMD_WIN->generic.width;
566
  *height = TUI_CMD_WIN->generic.height;
567
  return 1;
568
}

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