-
Notifications
You must be signed in to change notification settings - Fork 3
Expand file tree
/
Copy pathcli-cmds.c
More file actions
2008 lines (1657 loc) · 55.6 KB
/
cli-cmds.c
File metadata and controls
2008 lines (1657 loc) · 55.6 KB
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
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/* GDB CLI commands.
Copyright (C) 2000-2017 Free Software Foundation, Inc.
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 "arch-utils.h"
#include "dyn-string.h"
#include "readline/readline.h"
#include "readline/tilde.h"
#include "completer.h"
#include "target.h" /* For baud_rate, remote_debug and remote_timeout. */
#include "gdb_wait.h" /* For shell escape implementation. */
#include "gdb_regex.h" /* Used by apropos_command. */
#include "gdb_vfork.h"
#include "linespec.h"
#include "expression.h"
#include "frame.h"
#include "value.h"
#include "language.h"
#include "filenames.h" /* For DOSish file names. */
#include "objfiles.h"
#include "source.h"
#include "disasm.h"
#include "tracepoint.h"
#include "filestuff.h"
#include "location.h"
#include "ui-out.h"
#include "top.h"
#include "cli/cli-decode.h"
#include "cli/cli-script.h"
#include "cli/cli-setshow.h"
#include "cli/cli-cmds.h"
#include "cli/cli-utils.h"
#include "extension.h"
#ifdef TUI
#include "tui/tui.h" /* For tui_active et.al. */
#endif
#include <fcntl.h>
/* Prototypes for local command functions */
static void complete_command (char *, int);
static void echo_command (char *, int);
static void pwd_command (char *, int);
static void show_version (char *, int);
static void help_command (char *, int);
static void show_command (char *, int);
static void info_command (char *, int);
static void show_debug (char *, int);
static void set_debug (char *, int);
static void show_user (char *, int);
static void make_command (char *, int);
static void shell_escape (char *, int);
static void edit_command (char *, int);
static void list_command (char *, int);
/* Prototypes for local utility functions */
static void ambiguous_line_spec (struct symtabs_and_lines *);
static void filter_sals (struct symtabs_and_lines *);
/* Limit the call depth of user-defined commands */
unsigned int max_user_call_depth;
/* Define all cmd_list_elements. */
/* Chain containing all defined commands. */
struct cmd_list_element *cmdlist;
/* Chain containing all defined info subcommands. */
struct cmd_list_element *infolist;
/* Chain containing all defined enable subcommands. */
struct cmd_list_element *enablelist;
/* Chain containing all defined disable subcommands. */
struct cmd_list_element *disablelist;
/* Chain containing all defined stop subcommands. */
struct cmd_list_element *stoplist;
/* Chain containing all defined delete subcommands. */
struct cmd_list_element *deletelist;
/* Chain containing all defined detach subcommands. */
struct cmd_list_element *detachlist;
/* Chain containing all defined kill subcommands. */
struct cmd_list_element *killlist;
/* Chain containing all defined set subcommands */
struct cmd_list_element *setlist;
/* Chain containing all defined unset subcommands */
struct cmd_list_element *unsetlist;
/* Chain containing all defined show subcommands. */
struct cmd_list_element *showlist;
/* Chain containing all defined \"set history\". */
struct cmd_list_element *sethistlist;
/* Chain containing all defined \"show history\". */
struct cmd_list_element *showhistlist;
/* Chain containing all defined \"unset history\". */
struct cmd_list_element *unsethistlist;
/* Chain containing all defined maintenance subcommands. */
struct cmd_list_element *maintenancelist;
/* Chain containing all defined "maintenance info" subcommands. */
struct cmd_list_element *maintenanceinfolist;
/* Chain containing all defined "maintenance print" subcommands. */
struct cmd_list_element *maintenanceprintlist;
struct cmd_list_element *setprintlist;
struct cmd_list_element *showprintlist;
struct cmd_list_element *setdebuglist;
struct cmd_list_element *showdebuglist;
struct cmd_list_element *setchecklist;
struct cmd_list_element *showchecklist;
/* Command tracing state. */
int source_verbose = 0;
int trace_commands = 0;
/* 'script-extension' option support. */
static const char script_ext_off[] = "off";
static const char script_ext_soft[] = "soft";
static const char script_ext_strict[] = "strict";
static const char *const script_ext_enums[] = {
script_ext_off,
script_ext_soft,
script_ext_strict,
NULL
};
static const char *script_ext_mode = script_ext_soft;
/* Utility used everywhere when at least one argument is needed and
none is supplied. */
void
error_no_arg (const char *why)
{
error (_("Argument required (%s)."), why);
}
/* The "info" command is defined as a prefix, with allow_unknown = 0.
Therefore, its own definition is called only for "info" with no
args. */
static void
info_command (char *arg, int from_tty)
{
printf_unfiltered (_("\"info\" must be followed by "
"the name of an info command.\n"));
help_list (infolist, "info ", all_commands, gdb_stdout);
}
/* The "show" command with no arguments shows all the settings. */
static void
show_command (char *arg, int from_tty)
{
cmd_show_list (showlist, from_tty, "");
}
/* Provide documentation on command or list given by COMMAND. FROM_TTY
is ignored. */
static void
help_command (char *command, int from_tty)
{
help_cmd (command, gdb_stdout);
}
/* Note: The "complete" command is used by Emacs to implement completion.
[Is that why this function writes output with *_unfiltered?] */
static void
complete_command (char *arg, int from_tty)
{
int argpoint;
char *point, *arg_prefix;
VEC (char_ptr) *completions;
dont_repeat ();
if (max_completions == 0)
{
/* Only print this for non-mi frontends. An MI frontend may not
be able to handle this. */
if (!ui_out_is_mi_like_p (current_uiout))
{
printf_unfiltered (_("max-completions is zero,"
" completion is disabled.\n"));
}
return;
}
if (arg == NULL)
arg = "";
argpoint = strlen (arg);
/* complete_line assumes that its first argument is somewhere
within, and except for filenames at the beginning of, the word to
be completed. The following crude imitation of readline's
word-breaking tries to accomodate this. */
point = arg + argpoint;
while (point > arg)
{
if (strchr (rl_completer_word_break_characters, point[-1]) != 0)
break;
point--;
}
arg_prefix = (char *) alloca (point - arg + 1);
memcpy (arg_prefix, arg, point - arg);
arg_prefix[point - arg] = 0;
completions = complete_line (point, arg, argpoint);
if (completions)
{
int ix, size = VEC_length (char_ptr, completions);
char *item, *prev = NULL;
qsort (VEC_address (char_ptr, completions), size,
sizeof (char *), compare_strings);
/* We do extra processing here since we only want to print each
unique item once. */
for (ix = 0; VEC_iterate (char_ptr, completions, ix, item); ++ix)
{
if (prev == NULL || strcmp (item, prev) != 0)
{
printf_unfiltered ("%s%s\n", arg_prefix, item);
xfree (prev);
prev = item;
}
else
xfree (item);
}
xfree (prev);
VEC_free (char_ptr, completions);
if (size == max_completions)
{
/* ARG_PREFIX and POINT are included in the output so that emacs
will include the message in the output. */
printf_unfiltered (_("%s%s %s\n"),
arg_prefix, point,
get_max_completions_reached_message ());
}
}
}
int
is_complete_command (struct cmd_list_element *c)
{
return cmd_cfunc_eq (c, complete_command);
}
static void
show_version (char *args, int from_tty)
{
print_gdb_version (gdb_stdout);
printf_filtered ("\n");
}
static void
show_configuration (char *args, int from_tty)
{
print_gdb_configuration (gdb_stdout);
}
/* Handle the quit command. */
void
quit_command (char *args, int from_tty)
{
if (!quit_confirm ())
error (_("Not confirmed."));
query_if_trace_running (from_tty);
quit_force (args, from_tty);
}
static void
pwd_command (char *args, int from_tty)
{
if (args)
error (_("The \"pwd\" command does not take an argument: %s"), args);
if (! getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)))
error (_("Error finding name of working directory: %s"),
safe_strerror (errno));
if (strcmp (gdb_dirbuf, current_directory) != 0)
printf_unfiltered (_("Working directory %s\n (canonically %s).\n"),
current_directory, gdb_dirbuf);
else
printf_unfiltered (_("Working directory %s.\n"), current_directory);
}
void
cd_command (char *dir, int from_tty)
{
int len;
/* Found something other than leading repetitions of "/..". */
int found_real_path;
char *p;
struct cleanup *cleanup;
/* If the new directory is absolute, repeat is a no-op; if relative,
repeat might be useful but is more likely to be a mistake. */
dont_repeat ();
if (dir == 0)
dir = "~";
dir = tilde_expand (dir);
cleanup = make_cleanup (xfree, dir);
if (chdir (dir) < 0)
perror_with_name (dir);
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
/* There's too much mess with DOSish names like "d:", "d:.",
"d:./foo" etc. Instead of having lots of special #ifdef'ed code,
simply get the canonicalized name of the current directory. */
dir = getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
#endif
len = strlen (dir);
if (IS_DIR_SEPARATOR (dir[len - 1]))
{
/* Remove the trailing slash unless this is a root directory
(including a drive letter on non-Unix systems). */
if (!(len == 1) /* "/" */
#ifdef HAVE_DOS_BASED_FILE_SYSTEM
&& !(len == 3 && dir[1] == ':') /* "d:/" */
#endif
)
len--;
}
dir = savestring (dir, len);
if (IS_ABSOLUTE_PATH (dir))
current_directory = dir;
else
{
if (IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1]))
current_directory = concat (current_directory, dir, (char *)NULL);
else
current_directory = concat (current_directory, SLASH_STRING,
dir, (char *)NULL);
xfree (dir);
}
/* Now simplify any occurrences of `.' and `..' in the pathname. */
found_real_path = 0;
for (p = current_directory; *p;)
{
if (IS_DIR_SEPARATOR (p[0]) && p[1] == '.'
&& (p[2] == 0 || IS_DIR_SEPARATOR (p[2])))
memmove (p, p + 2, strlen (p + 2) + 1);
else if (IS_DIR_SEPARATOR (p[0]) && p[1] == '.' && p[2] == '.'
&& (p[3] == 0 || IS_DIR_SEPARATOR (p[3])))
{
if (found_real_path)
{
/* Search backwards for the directory just before the "/.."
and obliterate it and the "/..". */
char *q = p;
while (q != current_directory && !IS_DIR_SEPARATOR (q[-1]))
--q;
if (q == current_directory)
/* current_directory is
a relative pathname ("can't happen"--leave it alone). */
++p;
else
{
memmove (q - 1, p + 3, strlen (p + 3) + 1);
p = q - 1;
}
}
else
/* We are dealing with leading repetitions of "/..", for
example "/../..", which is the Mach super-root. */
p += 3;
}
else
{
found_real_path = 1;
++p;
}
}
forget_cached_source_info ();
if (from_tty)
pwd_command ((char *) 0, 1);
do_cleanups (cleanup);
}
/* Show the current value of the 'script-extension' option. */
static void
show_script_ext_mode (struct ui_file *file, int from_tty,
struct cmd_list_element *c, const char *value)
{
fprintf_filtered (file,
_("Script filename extension recognition is \"%s\".\n"),
value);
}
/* Try to open SCRIPT_FILE.
If successful, the full path name is stored in *FULL_PATHP,
the stream is stored in *STREAMP, and return 1.
The caller is responsible for freeing *FULL_PATHP.
If not successful, return 0; errno is set for the last file
we tried to open.
If SEARCH_PATH is non-zero, and the file isn't found in cwd,
search for it in the source search path. */
int
find_and_open_script (const char *script_file, int search_path,
FILE **streamp, char **full_pathp)
{
char *file;
int fd;
struct cleanup *old_cleanups;
int search_flags = OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH;
file = tilde_expand (script_file);
old_cleanups = make_cleanup (xfree, file);
if (search_path)
search_flags |= OPF_SEARCH_IN_PATH;
/* Search for and open 'file' on the search path used for source
files. Put the full location in *FULL_PATHP. */
fd = openp (source_path, search_flags,
file, O_RDONLY, full_pathp);
if (fd == -1)
{
int save_errno = errno;
do_cleanups (old_cleanups);
errno = save_errno;
return 0;
}
do_cleanups (old_cleanups);
*streamp = fdopen (fd, FOPEN_RT);
if (*streamp == NULL)
{
int save_errno = errno;
close (fd);
if (full_pathp)
xfree (*full_pathp);
errno = save_errno;
return 0;
}
return 1;
}
/* Load script FILE, which has already been opened as STREAM.
FILE_TO_OPEN is the form of FILE to use if one needs to open the file.
This is provided as FILE may have been found via the source search path.
An important thing to note here is that FILE may be a symlink to a file
with a different or non-existing suffix, and thus one cannot infer the
extension language from FILE_TO_OPEN. */
static void
source_script_from_stream (FILE *stream, const char *file,
const char *file_to_open)
{
if (script_ext_mode != script_ext_off)
{
const struct extension_language_defn *extlang
= get_ext_lang_of_file (file);
if (extlang != NULL)
{
if (ext_lang_present_p (extlang))
{
script_sourcer_func *sourcer
= ext_lang_script_sourcer (extlang);
gdb_assert (sourcer != NULL);
sourcer (extlang, stream, file_to_open);
return;
}
else if (script_ext_mode == script_ext_soft)
{
/* Assume the file is a gdb script.
This is handled below. */
}
else
throw_ext_lang_unsupported (extlang);
}
}
script_from_file (stream, file);
}
/* Worker to perform the "source" command.
Load script FILE.
If SEARCH_PATH is non-zero, and the file isn't found in cwd,
search for it in the source search path. */
static void
source_script_with_search (const char *file, int from_tty, int search_path)
{
FILE *stream;
char *full_path;
struct cleanup *old_cleanups;
if (file == NULL || *file == 0)
error (_("source command requires file name of file to source."));
if (!find_and_open_script (file, search_path, &stream, &full_path))
{
/* The script wasn't found, or was otherwise inaccessible.
If the source command was invoked interactively, throw an
error. Otherwise (e.g. if it was invoked by a script),
just emit a warning, rather than cause an error. */
if (from_tty)
perror_with_name (file);
else
{
perror_warning_with_name (file);
return;
}
}
old_cleanups = make_cleanup (xfree, full_path);
make_cleanup_fclose (stream);
/* The python support reopens the file, so we need to pass full_path here
in case the file was found on the search path. It's useful to do this
anyway so that error messages show the actual file used. But only do
this if we (may have) used search_path, as printing the full path in
errors for the non-search case can be more noise than signal. */
source_script_from_stream (stream, file, search_path ? full_path : file);
do_cleanups (old_cleanups);
}
/* Wrapper around source_script_with_search to export it to main.c
for use in loading .gdbinit scripts. */
void
source_script (const char *file, int from_tty)
{
source_script_with_search (file, from_tty, 0);
}
/* Return the source_verbose global variable to its previous state
on exit from the source command, by whatever means. */
static void
source_verbose_cleanup (void *old_value)
{
source_verbose = *(int *)old_value;
xfree (old_value);
}
static void
source_command (char *args, int from_tty)
{
struct cleanup *old_cleanups;
char *file = args;
int *old_source_verbose = XNEW (int);
int search_path = 0;
*old_source_verbose = source_verbose;
old_cleanups = make_cleanup (source_verbose_cleanup,
old_source_verbose);
/* -v causes the source command to run in verbose mode.
-s causes the file to be searched in the source search path,
even if the file name contains a '/'.
We still have to be able to handle filenames with spaces in a
backward compatible way, so buildargv is not appropriate. */
if (args)
{
while (args[0] != '\0')
{
/* Make sure leading white space does not break the
comparisons. */
args = skip_spaces (args);
if (args[0] != '-')
break;
if (args[1] == 'v' && isspace (args[2]))
{
source_verbose = 1;
/* Skip passed -v. */
args = &args[3];
}
else if (args[1] == 's' && isspace (args[2]))
{
search_path = 1;
/* Skip passed -s. */
args = &args[3];
}
else
break;
}
file = skip_spaces (args);
}
source_script_with_search (file, from_tty, search_path);
do_cleanups (old_cleanups);
}
static void
echo_command (char *text, int from_tty)
{
const char *p = text;
int c;
if (text)
while ((c = *p++) != '\0')
{
if (c == '\\')
{
/* \ at end of argument is used after spaces
so they won't be lost. */
if (*p == 0)
return;
c = parse_escape (get_current_arch (), &p);
if (c >= 0)
printf_filtered ("%c", c);
}
else
printf_filtered ("%c", c);
}
/* Force this output to appear now. */
wrap_here ("");
gdb_flush (gdb_stdout);
}
static void
shell_escape (char *arg, int from_tty)
{
#if defined(CANT_FORK) || \
(!defined(HAVE_WORKING_VFORK) && !defined(HAVE_WORKING_FORK))
/* If ARG is NULL, they want an inferior shell, but `system' just
reports if the shell is available when passed a NULL arg. */
int rc = system (arg ? arg : "");
if (!arg)
arg = "inferior shell";
if (rc == -1)
{
fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", arg,
safe_strerror (errno));
gdb_flush (gdb_stderr);
}
else if (rc)
{
fprintf_unfiltered (gdb_stderr, "%s exited with status %d\n", arg, rc);
gdb_flush (gdb_stderr);
}
#ifdef GLOBAL_CURDIR
/* Make sure to return to the directory GDB thinks it is, in case
the shell command we just ran changed it. */
chdir (current_directory);
#endif
#else /* Can fork. */
int status, pid;
if ((pid = vfork ()) == 0)
{
const char *p, *user_shell;
close_most_fds ();
if ((user_shell = (char *) getenv ("SHELL")) == NULL)
user_shell = "/bin/sh";
/* Get the name of the shell for arg0. */
p = lbasename (user_shell);
if (!arg)
execl (user_shell, p, (char *) 0);
else
execl (user_shell, p, "-c", arg, (char *) 0);
fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", user_shell,
safe_strerror (errno));
gdb_flush (gdb_stderr);
_exit (0177);
}
if (pid != -1)
waitpid (pid, &status, 0);
else
error (_("Fork failed"));
#endif /* Can fork. */
}
static void
edit_command (char *arg, int from_tty)
{
struct symtabs_and_lines sals;
struct symtab_and_line sal;
struct symbol *sym;
char *editor;
char *p;
const char *fn;
/* Pull in the current default source line if necessary. */
if (arg == 0)
{
set_default_source_symtab_and_line ();
sal = get_current_source_symtab_and_line ();
}
/* Bare "edit" edits file with present line. */
if (arg == 0)
{
if (sal.symtab == 0)
error (_("No default source file yet."));
sal.line += get_lines_to_list () / 2;
}
else
{
struct cleanup *cleanup;
struct event_location *location;
char *arg1;
/* Now should only be one argument -- decode it in SAL. */
arg1 = arg;
location = string_to_event_location (&arg1, current_language);
cleanup = make_cleanup_delete_event_location (location);
sals = decode_line_1 (location, DECODE_LINE_LIST_MODE, NULL, NULL, 0);
filter_sals (&sals);
if (! sals.nelts)
{
/* C++ */
do_cleanups (cleanup);
return;
}
if (sals.nelts > 1)
{
ambiguous_line_spec (&sals);
xfree (sals.sals);
do_cleanups (cleanup);
return;
}
sal = sals.sals[0];
xfree (sals.sals);
if (*arg1)
error (_("Junk at end of line specification."));
/* If line was specified by address, first print exactly which
line, and which file. In this case, sal.symtab == 0 means
address is outside of all known source files, not that user
failed to give a filename. */
if (*arg == '*')
{
struct gdbarch *gdbarch;
if (sal.symtab == 0)
error (_("No source file for address %s."),
paddress (get_current_arch (), sal.pc));
gdbarch = get_objfile_arch (SYMTAB_OBJFILE (sal.symtab));
sym = find_pc_function (sal.pc);
if (sym)
printf_filtered ("%s is in %s (%s:%d).\n",
paddress (gdbarch, sal.pc),
SYMBOL_PRINT_NAME (sym),
symtab_to_filename_for_display (sal.symtab),
sal.line);
else
printf_filtered ("%s is at %s:%d.\n",
paddress (gdbarch, sal.pc),
symtab_to_filename_for_display (sal.symtab),
sal.line);
}
/* If what was given does not imply a symtab, it must be an
undebuggable symbol which means no source code. */
if (sal.symtab == 0)
error (_("No line number known for %s."), arg);
do_cleanups (cleanup);
}
if ((editor = (char *) getenv ("EDITOR")) == NULL)
editor = "/bin/ex";
fn = symtab_to_fullname (sal.symtab);
/* Quote the file name, in case it has whitespace or other special
characters. */
p = xstrprintf ("%s +%d \"%s\"", editor, sal.line, fn);
shell_escape (p, from_tty);
xfree (p);
}
static void
list_command (char *arg, int from_tty)
{
struct symtabs_and_lines sals, sals_end;
struct symtab_and_line sal = { 0 };
struct symtab_and_line sal_end = { 0 };
struct symtab_and_line cursal = { 0 };
struct symbol *sym;
char *arg1;
int no_end = 1;
int dummy_end = 0;
int dummy_beg = 0;
int linenum_beg = 0;
char *p;
struct cleanup *cleanup;
cleanup = make_cleanup (null_cleanup, NULL);
/* Pull in the current default source line if necessary. */
if (arg == NULL || ((arg[0] == '+' || arg[0] == '-') && arg[1] == '\0'))
{
set_default_source_symtab_and_line ();
cursal = get_current_source_symtab_and_line ();
/* If this is the first "list" since we've set the current
source line, center the listing around that line. */
if (get_first_line_listed () == 0)
{
int first;
first = max (cursal.line - get_lines_to_list () / 2, 1);
/* A small special case --- if listing backwards, and we
should list only one line, list the preceding line,
instead of the exact line we've just shown after e.g.,
stopping for a breakpoint. */
if (arg != NULL && arg[0] == '-'
&& get_lines_to_list () == 1 && first > 1)
first -= 1;
print_source_lines (cursal.symtab, first,
first + get_lines_to_list (), 0);
}
/* "l" or "l +" lists next ten lines. */
else if (arg == NULL || arg[0] == '+')
print_source_lines (cursal.symtab, cursal.line,
cursal.line + get_lines_to_list (), 0);
/* "l -" lists previous ten lines, the ones before the ten just
listed. */
else if (arg[0] == '-')
{
if (get_first_line_listed () == 1)
error (_("Already at the start of %s."),
symtab_to_filename_for_display (cursal.symtab));
print_source_lines (cursal.symtab,
max (get_first_line_listed ()
- get_lines_to_list (), 1),
get_first_line_listed (), 0);
}
return;
}
/* Now if there is only one argument, decode it in SAL
and set NO_END.
If there are two arguments, decode them in SAL and SAL_END
and clear NO_END; however, if one of the arguments is blank,
set DUMMY_BEG or DUMMY_END to record that fact. */
if (!have_full_symbols () && !have_partial_symbols ())
error (_("No symbol table is loaded. Use the \"file\" command."));
arg1 = arg;
if (*arg1 == ',')
dummy_beg = 1;
else
{
struct event_location *location;
location = string_to_event_location (&arg1, current_language);
make_cleanup_delete_event_location (location);
sals = decode_line_1 (location, DECODE_LINE_LIST_MODE, NULL, NULL, 0);
filter_sals (&sals);
if (!sals.nelts)
{
/* C++ */
do_cleanups (cleanup);
return;
}
if (sals.nelts > 1)
{
ambiguous_line_spec (&sals);
xfree (sals.sals);
do_cleanups (cleanup);
return;
}
sal = sals.sals[0];
xfree (sals.sals);
}
/* Record whether the BEG arg is all digits. */
for (p = arg; p != arg1 && *p >= '0' && *p <= '9'; p++);
linenum_beg = (p == arg1);
while (*arg1 == ' ' || *arg1 == '\t')