1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
|
/* TUI display source/assembly window.
Copyright (C) 1998-2019 Free Software Foundation, Inc.
Contributed by Hewlett-Packard Company.
This file is part of GDB.
This program 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 3 of the License, or
(at your option) any later version.
This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include <ctype.h>
#include "symtab.h"
#include "frame.h"
#include "breakpoint.h"
#include "value.h"
#include "source.h"
#include "objfiles.h"
#include "filenames.h"
#include "tui/tui.h"
#include "tui/tui-data.h"
#include "tui/tui-io.h"
#include "tui/tui-stack.h"
#include "tui/tui-win.h"
#include "tui/tui-wingeneral.h"
#include "tui/tui-winsource.h"
#include "tui/tui-source.h"
#include "tui/tui-disasm.h"
#include "gdb_curses.h"
/* Function to display the "main" routine. */
void
tui_display_main (void)
{
if ((tui_source_windows ())->count > 0)
{
struct gdbarch *gdbarch;
CORE_ADDR addr;
tui_get_begin_asm_address (&gdbarch, &addr);
if (addr != (CORE_ADDR) 0)
{
struct symtab *s;
tui_update_source_windows_with_addr (gdbarch, addr);
s = find_pc_line_symtab (addr);
if (s != NULL)
tui_update_locator_fullname (symtab_to_fullname (s));
else
tui_update_locator_fullname ("??");
}
}
}
/* Function to display source in the source window. This function
initializes the horizontal scroll to 0. */
void
tui_update_source_window (struct tui_win_info *win_info,
struct gdbarch *gdbarch,
struct symtab *s,
struct tui_line_or_address line_or_addr,
int noerror)
{
win_info->detail.source_info.horizontal_offset = 0;
tui_update_source_window_as_is (win_info, gdbarch, s, line_or_addr, noerror);
return;
}
/* Function to display source in the source/asm window. This function
shows the source as specified by the horizontal offset. */
void
tui_update_source_window_as_is (struct tui_win_info *win_info,
struct gdbarch *gdbarch,
struct symtab *s,
struct tui_line_or_address line_or_addr,
int noerror)
{
enum tui_status ret;
if (win_info->generic.type == SRC_WIN)
ret = tui_set_source_content (s, line_or_addr.u.line_no, noerror);
else
ret = tui_set_disassem_content (gdbarch, line_or_addr.u.addr);
if (ret == TUI_FAILURE)
{
tui_clear_source_content (win_info, EMPTY_SOURCE_PROMPT);
tui_clear_exec_info_content (win_info);
}
else
{
tui_update_breakpoint_info (win_info, 0);
tui_show_source_content (win_info);
tui_update_exec_info (win_info);
if (win_info->generic.type == SRC_WIN)
{
symtab_and_line sal;
sal.line = line_or_addr.u.line_no +
(win_info->generic.content_size - 2);
sal.symtab = s;
sal.pspace = SYMTAB_PSPACE (s);
set_current_source_symtab_and_line (sal);
/* If the focus was in the asm win, put it in the src win if
we don't have a split layout. */
if (tui_win_with_focus () == TUI_DISASM_WIN
&& tui_current_layout () != SRC_DISASSEM_COMMAND)
tui_set_win_focus_to (TUI_SRC_WIN);
}
}
return;
}
/* Function to ensure that the source and/or disassemly windows
reflect the input address. */
void
tui_update_source_windows_with_addr (struct gdbarch *gdbarch, CORE_ADDR addr)
{
if (addr != 0)
{
struct symtab_and_line sal;
struct tui_line_or_address l;
switch (tui_current_layout ())
{
case DISASSEM_COMMAND:
case DISASSEM_DATA_COMMAND:
tui_show_disassem (gdbarch, addr);
break;
case SRC_DISASSEM_COMMAND:
tui_show_disassem_and_update_source (gdbarch, addr);
break;
default:
sal = find_pc_line (addr, 0);
l.loa = LOA_LINE;
l.u.line_no = sal.line;
tui_show_symtab_source (gdbarch, sal.symtab, l, FALSE);
break;
}
}
else
{
int i;
for (i = 0; i < (tui_source_windows ())->count; i++)
{
struct tui_win_info *win_info = (tui_source_windows ())->list[i];
tui_clear_source_content (win_info, EMPTY_SOURCE_PROMPT);
tui_clear_exec_info_content (win_info);
}
}
}
/* Function to ensure that the source and/or disassemly windows
reflect the input address. */
void
tui_update_source_windows_with_line (struct symtab *s, int line)
{
struct gdbarch *gdbarch;
CORE_ADDR pc;
struct tui_line_or_address l;
if (!s)
return;
gdbarch = get_objfile_arch (SYMTAB_OBJFILE (s));
switch (tui_current_layout ())
{
case DISASSEM_COMMAND:
case DISASSEM_DATA_COMMAND:
find_line_pc (s, line, &pc);
tui_update_source_windows_with_addr (gdbarch, pc);
break;
default:
l.loa = LOA_LINE;
l.u.line_no = line;
tui_show_symtab_source (gdbarch, s, l, FALSE);
if (tui_current_layout () == SRC_DISASSEM_COMMAND)
{
find_line_pc (s, line, &pc);
tui_show_disassem (gdbarch, pc);
}
break;
}
return;
}
void
tui_clear_source_content (struct tui_win_info *win_info,
int display_prompt)
{
if (win_info != NULL)
{
int i;
win_info->generic.content_in_use = FALSE;
tui_erase_source_content (win_info, display_prompt);
for (i = 0; i < win_info->generic.content_size; i++)
{
struct tui_win_element *element = win_info->generic.content[i];
element->which_element.source.has_break = FALSE;
element->which_element.source.is_exec_point = FALSE;
}
}
}
void
tui_erase_source_content (struct tui_win_info *win_info,
int display_prompt)
{
int x_pos;
int half_width = (win_info->generic.width - 2) / 2;
if (win_info->generic.handle != (WINDOW *) NULL)
{
werase (win_info->generic.handle);
tui_check_and_display_highlight_if_needed (win_info);
if (display_prompt == EMPTY_SOURCE_PROMPT)
{
const char *no_src_str;
if (win_info->generic.type == SRC_WIN)
no_src_str = NO_SRC_STRING;
else
no_src_str = NO_DISASSEM_STRING;
if (strlen (no_src_str) >= half_width)
x_pos = 1;
else
x_pos = half_width - strlen (no_src_str);
mvwaddstr (win_info->generic.handle,
(win_info->generic.height / 2),
x_pos,
(char *) no_src_str);
/* elz: Added this function call to set the real contents of
the window to what is on the screen, so that later calls
to refresh, do display the correct stuff, and not the old
image. */
tui_set_source_content_nil (win_info, no_src_str);
}
tui_refresh_win (&win_info->generic);
}
}
/* Redraw the complete line of a source or disassembly window. */
static void
tui_show_source_line (struct tui_win_info *win_info, int lineno)
{
struct tui_win_element *line;
int x;
line = win_info->generic.content[lineno - 1];
if (line->which_element.source.is_exec_point)
tui_set_reverse_mode (win_info->generic.handle, true);
wmove (win_info->generic.handle, lineno, 1);
tui_puts (line->which_element.source.line,
win_info->generic.handle);
if (line->which_element.source.is_exec_point)
tui_set_reverse_mode (win_info->generic.handle, false);
/* Clear to end of line but stop before the border. */
x = getcurx (win_info->generic.handle);
while (x + 1 < win_info->generic.width)
{
waddch (win_info->generic.handle, ' ');
x = getcurx (win_info->generic.handle);
}
}
void
tui_show_source_content (struct tui_win_info *win_info)
{
if (win_info->generic.content_size > 0)
{
int lineno;
for (lineno = 1; lineno <= win_info->generic.content_size; lineno++)
tui_show_source_line (win_info, lineno);
}
else
tui_erase_source_content (win_info, TRUE);
tui_check_and_display_highlight_if_needed (win_info);
tui_refresh_win (&win_info->generic);
win_info->generic.content_in_use = TRUE;
}
/* Refill the source window's source cache and update it. If WIN_INFO
is a disassembly window, then just update it. */
void
tui_refill_source_window (struct tui_win_info *win_info)
{
symtab *s = nullptr;
if (win_info->generic.type == SRC_WIN)
{
symtab_and_line cursal = get_current_source_symtab_and_line ();
s = (cursal.symtab == NULL
? find_pc_line_symtab (get_frame_pc (get_selected_frame (NULL)))
: cursal.symtab);
}
tui_update_source_window_as_is (win_info,
win_info->detail.source_info.gdbarch,
s,
win_info->generic.content[0]
->which_element.source.line_or_addr,
FALSE);
}
/* Scroll the source forward or backward horizontally. */
void
tui_horizontal_source_scroll (struct tui_win_info *win_info,
enum tui_scroll_direction direction,
int num_to_scroll)
{
if (win_info->generic.content != NULL)
{
int offset;
if (direction == LEFT_SCROLL)
offset = win_info->detail.source_info.horizontal_offset
+ num_to_scroll;
else
{
offset = win_info->detail.source_info.horizontal_offset
- num_to_scroll;
if (offset < 0)
offset = 0;
}
win_info->detail.source_info.horizontal_offset = offset;
tui_refill_source_window (win_info);
}
}
/* Set or clear the has_break flag in the line whose line is
line_no. */
void
tui_set_is_exec_point_at (struct tui_line_or_address l,
struct tui_win_info *win_info)
{
int changed = 0;
int i;
tui_win_content content = win_info->generic.content;
i = 0;
while (i < win_info->generic.content_size)
{
int new_state;
struct tui_line_or_address content_loa =
content[i]->which_element.source.line_or_addr;
gdb_assert (l.loa == LOA_ADDRESS || l.loa == LOA_LINE);
gdb_assert (content_loa.loa == LOA_LINE
|| content_loa.loa == LOA_ADDRESS);
if (content_loa.loa == l.loa
&& ((l.loa == LOA_LINE && content_loa.u.line_no == l.u.line_no)
|| (content_loa.u.addr == l.u.addr)))
new_state = TRUE;
else
new_state = FALSE;
if (new_state != content[i]->which_element.source.is_exec_point)
{
changed++;
content[i]->which_element.source.is_exec_point = new_state;
tui_show_source_line (win_info, i + 1);
}
i++;
}
if (changed)
tui_refill_source_window (win_info);
}
/* Update the execution windows to show the active breakpoints.
This is called whenever a breakpoint is inserted, removed or
has its state changed. */
void
tui_update_all_breakpoint_info (void)
{
struct tui_list *list = tui_source_windows ();
int i;
for (i = 0; i < list->count; i++)
{
struct tui_win_info *win = list->list[i];
if (tui_update_breakpoint_info (win, FALSE))
{
tui_update_exec_info (win);
}
}
}
/* Scan the source window and the breakpoints to update the has_break
information for each line.
Returns 1 if something changed and the execution window must be
refreshed. */
int
tui_update_breakpoint_info (struct tui_win_info *win,
int current_only)
{
int i;
int need_refresh = 0;
struct tui_source_info *src = &win->detail.source_info;
for (i = 0; i < win->generic.content_size; i++)
{
struct breakpoint *bp;
extern struct breakpoint *breakpoint_chain;
int mode;
struct tui_source_element *line;
line = &win->generic.content[i]->which_element.source;
if (current_only && !line->is_exec_point)
continue;
/* Scan each breakpoint to see if the current line has something to
do with it. Identify enable/disabled breakpoints as well as
those that we already hit. */
mode = 0;
for (bp = breakpoint_chain;
bp != (struct breakpoint *) NULL;
bp = bp->next)
{
struct bp_location *loc;
gdb_assert (line->line_or_addr.loa == LOA_LINE
|| line->line_or_addr.loa == LOA_ADDRESS);
for (loc = bp->loc; loc != NULL; loc = loc->next)
{
if ((win == TUI_SRC_WIN
&& loc->symtab != NULL
&& filename_cmp (src->fullname,
symtab_to_fullname (loc->symtab)) == 0
&& line->line_or_addr.loa == LOA_LINE
&& loc->line_number == line->line_or_addr.u.line_no)
|| (win == TUI_DISASM_WIN
&& line->line_or_addr.loa == LOA_ADDRESS
&& loc->address == line->line_or_addr.u.addr))
{
if (bp->enable_state == bp_disabled)
mode |= TUI_BP_DISABLED;
else
mode |= TUI_BP_ENABLED;
if (bp->hit_count)
mode |= TUI_BP_HIT;
if (bp->loc->cond)
mode |= TUI_BP_CONDITIONAL;
if (bp->type == bp_hardware_breakpoint)
mode |= TUI_BP_HARDWARE;
}
}
}
if (line->has_break != mode)
{
line->has_break = mode;
need_refresh = 1;
}
}
return need_refresh;
}
/* Function to initialize the content of the execution info window,
based upon the input window which is either the source or
disassembly window. */
enum tui_status
tui_set_exec_info_content (struct tui_win_info *win_info)
{
enum tui_status ret = TUI_SUCCESS;
if (win_info->detail.source_info.execution_info
!= (struct tui_gen_win_info *) NULL)
{
struct tui_gen_win_info *exec_info_ptr
= win_info->detail.source_info.execution_info;
if (exec_info_ptr->content == NULL)
exec_info_ptr->content =
tui_alloc_content (win_info->generic.height, exec_info_ptr->type);
if (exec_info_ptr->content != NULL)
{
int i;
tui_update_breakpoint_info (win_info, 1);
for (i = 0; i < win_info->generic.content_size; i++)
{
struct tui_win_element *element;
struct tui_win_element *src_element;
int mode;
element = exec_info_ptr->content[i];
src_element = win_info->generic.content[i];
memset(element->which_element.simple_string, ' ',
sizeof(element->which_element.simple_string));
element->which_element.simple_string[TUI_EXECINFO_SIZE - 1] = 0;
/* Now update the exec info content based upon the state
of each line as indicated by the source content. */
mode = src_element->which_element.source.has_break;
if (mode & TUI_BP_HIT)
element->which_element.simple_string[TUI_BP_HIT_POS] =
(mode & TUI_BP_HARDWARE) ? 'H' : 'B';
else if (mode & (TUI_BP_ENABLED | TUI_BP_DISABLED))
element->which_element.simple_string[TUI_BP_HIT_POS] =
(mode & TUI_BP_HARDWARE) ? 'h' : 'b';
if (mode & TUI_BP_ENABLED)
element->which_element.simple_string[TUI_BP_BREAK_POS] = '+';
else if (mode & TUI_BP_DISABLED)
element->which_element.simple_string[TUI_BP_BREAK_POS] = '-';
if (src_element->which_element.source.is_exec_point)
element->which_element.simple_string[TUI_EXEC_POS] = '>';
}
exec_info_ptr->content_size = win_info->generic.content_size;
}
else
ret = TUI_FAILURE;
}
return ret;
}
void
tui_show_exec_info_content (struct tui_win_info *win_info)
{
struct tui_gen_win_info *exec_info
= win_info->detail.source_info.execution_info;
int cur_line;
werase (exec_info->handle);
tui_refresh_win (exec_info);
for (cur_line = 1; (cur_line <= exec_info->content_size); cur_line++)
mvwaddstr (exec_info->handle,
cur_line,
0,
(char *) exec_info->content[cur_line - 1]
->which_element.simple_string);
tui_refresh_win (exec_info);
exec_info->content_in_use = TRUE;
}
void
tui_erase_exec_info_content (struct tui_win_info *win_info)
{
struct tui_gen_win_info *exec_info
= win_info->detail.source_info.execution_info;
werase (exec_info->handle);
tui_refresh_win (exec_info);
}
void
tui_clear_exec_info_content (struct tui_win_info *win_info)
{
win_info->detail.source_info.execution_info->content_in_use = FALSE;
tui_erase_exec_info_content (win_info);
return;
}
/* Function to update the execution info window. */
void
tui_update_exec_info (struct tui_win_info *win_info)
{
tui_set_exec_info_content (win_info);
tui_show_exec_info_content (win_info);
}
enum tui_status
tui_alloc_source_buffer (struct tui_win_info *win_info)
{
int i, line_width, max_lines;
/* The window width/height includes the highlight box. Determine actual
content dimensions, including string null-terminators. */
max_lines = win_info->generic.height - 2;
line_width = win_info->generic.width - 2 + 1;
/* Allocate the buffer for the source lines. */
if (win_info->generic.content == NULL)
{
/* Allocate the content list. */
win_info->generic.content = tui_alloc_content (max_lines, SRC_WIN);
for (i = 0; i < max_lines; i++)
win_info->generic.content[i]->which_element.source.line
= (char *) xmalloc (line_width);
}
return TUI_SUCCESS;
}
/* Answer whether a particular line number or address is displayed
in the current source window. */
int
tui_line_is_displayed (int line,
struct tui_win_info *win_info,
int check_threshold)
{
int is_displayed = FALSE;
int i, threshold;
if (check_threshold)
threshold = SCROLL_THRESHOLD;
else
threshold = 0;
i = 0;
while (i < win_info->generic.content_size - threshold
&& !is_displayed)
{
is_displayed
= win_info->generic.content[i]
->which_element.source.line_or_addr.loa == LOA_LINE
&& win_info->generic.content[i]
->which_element.source.line_or_addr.u.line_no == line;
i++;
}
return is_displayed;
}
/* Answer whether a particular line number or address is displayed
in the current source window. */
int
tui_addr_is_displayed (CORE_ADDR addr,
struct tui_win_info *win_info,
int check_threshold)
{
int is_displayed = FALSE;
int i, threshold;
if (check_threshold)
threshold = SCROLL_THRESHOLD;
else
threshold = 0;
i = 0;
while (i < win_info->generic.content_size - threshold
&& !is_displayed)
{
is_displayed
= win_info->generic.content[i]
->which_element.source.line_or_addr.loa == LOA_ADDRESS
&& win_info->generic.content[i]
->which_element.source.line_or_addr.u.addr == addr;
i++;
}
return is_displayed;
}
/*****************************************
** STATIC LOCAL FUNCTIONS **
******************************************/
|