Commit | Line | Data |
---|---|---|
7d9884b9 | 1 | /* Top level `main' program for GDB, the GNU debugger. |
51b57ded FF |
2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992 |
3 | Free Software Foundation, Inc. | |
bd5635a1 RP |
4 | |
5 | This file is part of GDB. | |
6 | ||
e522fb52 | 7 | This program is free software; you can redistribute it and/or modify |
bd5635a1 | 8 | it under the terms of the GNU General Public License as published by |
e522fb52 JG |
9 | the Free Software Foundation; either version 2 of the License, or |
10 | (at your option) any later version. | |
bd5635a1 | 11 | |
e522fb52 | 12 | This program is distributed in the hope that it will be useful, |
bd5635a1 RP |
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 | |
e522fb52 JG |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
bd5635a1 | 20 | |
bd5635a1 RP |
21 | #include "defs.h" |
22 | #include "gdbcmd.h" | |
51b57ded | 23 | #include "call-cmds.h" |
bd5635a1 RP |
24 | #include "symtab.h" |
25 | #include "inferior.h" | |
26 | #include "signals.h" | |
27 | #include "target.h" | |
28 | #include "breakpoint.h" | |
30875e1c SG |
29 | #include "gdbtypes.h" |
30 | #include "expression.h" | |
bd099407 | 31 | #include "language.h" |
bd5635a1 | 32 | |
e522fb52 JG |
33 | #include "getopt.h" |
34 | ||
35 | /* readline include files */ | |
36 | #include "readline.h" | |
37 | #include "history.h" | |
bd5635a1 RP |
38 | |
39 | /* readline defines this. */ | |
40 | #undef savestring | |
41 | ||
42 | #ifdef USG | |
43 | #include <sys/types.h> | |
44 | #include <unistd.h> | |
45 | #endif | |
46 | ||
47 | #include <string.h> | |
ee0613d1 | 48 | #ifndef NO_SYS_FILE |
bd5635a1 | 49 | #include <sys/file.h> |
ee0613d1 | 50 | #endif |
bd5635a1 RP |
51 | #include <setjmp.h> |
52 | #include <sys/param.h> | |
53 | #include <sys/stat.h> | |
e522fb52 | 54 | #include <ctype.h> |
bd5635a1 RP |
55 | |
56 | #ifdef SET_STACK_LIMIT_HUGE | |
57 | #include <sys/time.h> | |
58 | #include <sys/resource.h> | |
bd5635a1 RP |
59 | |
60 | int original_stack_limit; | |
61 | #endif | |
62 | ||
30875e1c SG |
63 | /* Prototypes for local functions */ |
64 | ||
65 | static char * | |
66 | symbol_completion_function PARAMS ((char *, int)); | |
67 | ||
68 | static void | |
69 | command_loop PARAMS ((void)); | |
70 | ||
71 | static void | |
72 | command_loop_marker PARAMS ((int)); | |
73 | ||
74 | static void | |
fb29d681 | 75 | print_gdb_version PARAMS ((FILE *)); |
30875e1c SG |
76 | |
77 | static void | |
78 | quit_command PARAMS ((char *, int)); | |
79 | ||
80 | static void | |
81 | initialize_main PARAMS ((void)); | |
82 | ||
83 | static void | |
84 | initialize_history PARAMS ((void)); | |
85 | ||
86 | static void | |
87 | initialize_cmd_lists PARAMS ((void)); | |
88 | ||
89 | static void | |
90 | float_handler PARAMS ((int)); | |
91 | ||
92 | static void | |
93 | source_command PARAMS ((char *, int)); | |
94 | ||
95 | static void | |
96 | cd_command PARAMS ((char *, int)); | |
97 | ||
98 | static void | |
99 | print_gnu_advertisement PARAMS ((void)); | |
100 | ||
101 | static void | |
102 | init_signals PARAMS ((void)); | |
103 | ||
104 | static void | |
105 | read_command_file PARAMS ((FILE *)); | |
106 | ||
107 | static void | |
108 | set_verbose PARAMS ((char *, int, struct cmd_list_element *)); | |
109 | ||
110 | static void | |
111 | show_history PARAMS ((char *, int)); | |
112 | ||
113 | static void | |
114 | set_history PARAMS ((char *, int)); | |
115 | ||
116 | static void | |
117 | set_history_size_command PARAMS ((char *, int, struct cmd_list_element *)); | |
118 | ||
119 | static void | |
120 | show_commands PARAMS ((char *, int)); | |
121 | ||
30875e1c SG |
122 | static void |
123 | echo_command PARAMS ((char *, int)); | |
124 | ||
125 | static void | |
126 | pwd_command PARAMS ((char *, int)); | |
127 | ||
128 | static void | |
129 | show_version PARAMS ((char *, int)); | |
130 | ||
131 | static void | |
132 | document_command PARAMS ((char *, int)); | |
133 | ||
134 | static void | |
135 | define_command PARAMS ((char *, int)); | |
136 | ||
137 | static void | |
138 | validate_comname PARAMS ((char *)); | |
139 | ||
140 | static void | |
141 | help_command PARAMS ((char *, int)); | |
142 | ||
143 | static void | |
144 | show_command PARAMS ((char *, int)); | |
145 | ||
146 | static void | |
147 | info_command PARAMS ((char *, int)); | |
148 | ||
149 | static void | |
150 | do_nothing PARAMS ((int)); | |
151 | ||
597dc86b SG |
152 | static int |
153 | quit_cover PARAMS ((char *)); | |
154 | ||
30875e1c SG |
155 | static void |
156 | disconnect PARAMS ((int)); | |
157 | ||
158 | static void | |
159 | source_cleanup PARAMS ((FILE *)); | |
bd5635a1 RP |
160 | |
161 | /* If this definition isn't overridden by the header files, assume | |
162 | that isatty and fileno exist on this system. */ | |
163 | #ifndef ISATTY | |
164 | #define ISATTY(FP) (isatty (fileno (FP))) | |
165 | #endif | |
166 | ||
167 | /* Initialization file name for gdb. This is overridden in some configs. */ | |
168 | ||
169 | #ifndef GDBINIT_FILENAME | |
170 | #define GDBINIT_FILENAME ".gdbinit" | |
171 | #endif | |
6fe90fc8 JK |
172 | static char gdbinit[] = GDBINIT_FILENAME; |
173 | static int inhibit_gdbinit = 0; | |
bd5635a1 | 174 | |
f266e564 JK |
175 | #define ALL_CLEANUPS ((struct cleanup *)0) |
176 | ||
bd5635a1 RP |
177 | /* Version number of GDB, as a string. */ |
178 | ||
179 | extern char *version; | |
180 | ||
57cb418a RP |
181 | /* Canonical host name as a string. */ |
182 | ||
183 | extern char *host_canonical; | |
184 | ||
185 | /* Canonical target name as a string. */ | |
186 | ||
187 | extern char *target_canonical; | |
188 | ||
81066208 JG |
189 | /* Message to be printed before the error message, when an error occurs. */ |
190 | ||
191 | extern char *error_pre_print; | |
192 | ||
318bf84f FF |
193 | /* Message to be printed before the warning message, when a warning occurs. */ |
194 | ||
195 | extern char *warning_pre_print; | |
196 | ||
bd099407 JG |
197 | extern char lang_frame_mismatch_warn[]; /* language.c */ |
198 | ||
ee0613d1 JG |
199 | /* Whether GDB's stdin is on a terminal. */ |
200 | ||
201 | extern int gdb_has_a_terminal; /* inflow.c */ | |
202 | ||
bd5635a1 RP |
203 | /* Flag for whether we want all the "from_tty" gubbish printed. */ |
204 | ||
205 | int caution = 1; /* Default is yes, sigh. */ | |
206 | ||
207 | /* | |
208 | * Define all cmd_list_element's | |
209 | */ | |
210 | ||
211 | /* Chain containing all defined commands. */ | |
212 | ||
213 | struct cmd_list_element *cmdlist; | |
214 | ||
215 | /* Chain containing all defined info subcommands. */ | |
216 | ||
217 | struct cmd_list_element *infolist; | |
218 | ||
219 | /* Chain containing all defined enable subcommands. */ | |
220 | ||
221 | struct cmd_list_element *enablelist; | |
222 | ||
223 | /* Chain containing all defined disable subcommands. */ | |
224 | ||
225 | struct cmd_list_element *disablelist; | |
226 | ||
227 | /* Chain containing all defined delete subcommands. */ | |
228 | ||
229 | struct cmd_list_element *deletelist; | |
230 | ||
231 | /* Chain containing all defined "enable breakpoint" subcommands. */ | |
232 | ||
233 | struct cmd_list_element *enablebreaklist; | |
234 | ||
235 | /* Chain containing all defined set subcommands */ | |
236 | ||
237 | struct cmd_list_element *setlist; | |
238 | ||
0239d9b3 FF |
239 | /* Chain containing all defined unset subcommands */ |
240 | ||
241 | struct cmd_list_element *unsetlist; | |
242 | ||
bd5635a1 | 243 | /* Chain containing all defined show subcommands. */ |
0239d9b3 | 244 | |
bd5635a1 RP |
245 | struct cmd_list_element *showlist; |
246 | ||
247 | /* Chain containing all defined \"set history\". */ | |
248 | ||
249 | struct cmd_list_element *sethistlist; | |
250 | ||
251 | /* Chain containing all defined \"show history\". */ | |
0239d9b3 | 252 | |
bd5635a1 RP |
253 | struct cmd_list_element *showhistlist; |
254 | ||
255 | /* Chain containing all defined \"unset history\". */ | |
256 | ||
257 | struct cmd_list_element *unsethistlist; | |
258 | ||
0239d9b3 FF |
259 | /* Chain containing all defined maintenance subcommands. */ |
260 | ||
261 | #if MAINTENANCE_CMDS | |
262 | struct cmd_list_element *maintenancelist; | |
263 | #endif | |
264 | ||
265 | /* Chain containing all defined "maintenance info" subcommands. */ | |
266 | ||
267 | #if MAINTENANCE_CMDS | |
268 | struct cmd_list_element *maintenanceinfolist; | |
269 | #endif | |
270 | ||
a8e033f2 SG |
271 | /* Chain containing all defined "maintenance print" subcommands. */ |
272 | ||
273 | #if MAINTENANCE_CMDS | |
274 | struct cmd_list_element *maintenanceprintlist; | |
275 | #endif | |
276 | ||
0239d9b3 FF |
277 | struct cmd_list_element *setprintlist; |
278 | ||
279 | struct cmd_list_element *showprintlist; | |
280 | ||
281 | struct cmd_list_element *setchecklist; | |
282 | ||
283 | struct cmd_list_element *showchecklist; | |
284 | ||
bd5635a1 RP |
285 | /* stdio stream that command input is being read from. */ |
286 | ||
287 | FILE *instream; | |
288 | ||
289 | /* Current working directory. */ | |
290 | ||
291 | char *current_directory; | |
292 | ||
293 | /* The directory name is actually stored here (usually). */ | |
f7402c04 | 294 | static char dirbuf[1024]; |
bd5635a1 RP |
295 | |
296 | /* Function to call before reading a command, if nonzero. | |
297 | The function receives two args: an input stream, | |
298 | and a prompt string. */ | |
bd099407 | 299 | |
30875e1c | 300 | void (*window_hook) PARAMS ((FILE *, char *)); |
bd5635a1 | 301 | |
318bf84f FF |
302 | extern int mapped_symbol_files; |
303 | extern int readnow_symbol_files; | |
304 | ||
bd5635a1 RP |
305 | int epoch_interface; |
306 | int xgdb_verbose; | |
307 | ||
bd5635a1 RP |
308 | /* gdb prints this when reading a command interactively */ |
309 | static char *prompt; | |
310 | ||
311 | /* Buffer used for reading command lines, and the size | |
312 | allocated for it so far. */ | |
313 | ||
314 | char *line; | |
315 | int linesize = 100; | |
316 | ||
317 | /* Baud rate specified for talking to serial target systems. Default | |
318 | is left as a zero pointer, so targets can choose their own defaults. */ | |
319 | ||
320 | char *baud_rate; | |
321 | ||
322 | /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */ | |
323 | ||
324 | #ifndef STOP_SIGNAL | |
325 | #ifdef SIGTSTP | |
326 | #define STOP_SIGNAL SIGTSTP | |
30875e1c | 327 | static void stop_sig PARAMS ((int)); |
bd5635a1 RP |
328 | #endif |
329 | #endif | |
d566d62a JK |
330 | |
331 | /* Some System V have job control but not sigsetmask(). */ | |
332 | #if !defined (HAVE_SIGSETMASK) | |
333 | #define HAVE_SIGSETMASK !defined (USG) | |
334 | #endif | |
335 | ||
8b3c897a | 336 | #if 0 == (HAVE_SIGSETMASK) |
d566d62a JK |
337 | #define sigsetmask(n) |
338 | #endif | |
bd5635a1 | 339 | \f |
9748446f JK |
340 | /* Where to go for return_to_top_level (RETURN_ERROR). */ |
341 | static jmp_buf error_return; | |
342 | /* Where to go for return_to_top_level (RETURN_QUIT). */ | |
343 | static jmp_buf quit_return; | |
bd5635a1 | 344 | |
9748446f JK |
345 | /* Temporary variable for SET_TOP_LEVEL. */ |
346 | static int top_level_val; | |
347 | ||
348 | /* Do a setjmp on error_return and quit_return. catch_errors is | |
349 | generally a cleaner way to do this, but main() would look pretty | |
350 | ugly if it had to use catch_errors each time. */ | |
351 | ||
352 | #define SET_TOP_LEVEL() \ | |
353 | (((top_level_val = setjmp (error_return)) \ | |
354 | ? (PTR) 0 : (PTR) memcpy (quit_return, error_return, sizeof (jmp_buf))) \ | |
355 | , top_level_val) | |
356 | ||
357 | /* Return for reason REASON. This generally gets back to the command | |
358 | loop, but can be caught via catch_errors. */ | |
bd5635a1 | 359 | |
30875e1c | 360 | NORETURN void |
9748446f JK |
361 | return_to_top_level (reason) |
362 | enum return_reason reason; | |
bd5635a1 RP |
363 | { |
364 | quit_flag = 0; | |
365 | immediate_quit = 0; | |
366 | bpstat_clear_actions(stop_bpstat); /* Clear queued breakpoint commands */ | |
bd5635a1 | 367 | disable_current_display (); |
f266e564 | 368 | do_cleanups (ALL_CLEANUPS); |
9748446f JK |
369 | (NORETURN void) longjmp |
370 | (reason == RETURN_ERROR ? error_return : quit_return, 1); | |
bd5635a1 RP |
371 | } |
372 | ||
9748446f JK |
373 | /* Call FUNC with arg ARGS, catching any errors. If there is no |
374 | error, return the value returned by FUNC. If there is an error, | |
375 | print ERRSTRING, print the specific error message, then return | |
376 | zero. | |
377 | ||
378 | MASK specifies what to catch; it is normally set to | |
379 | RETURN_MASK_ALL, if for no other reason than that the code which | |
380 | calls catch_errors might not be set up to deal with a quit which | |
381 | isn't caught. But if the code can deal with it, it generally | |
382 | should be RETURN_MASK_ERROR, unless for some reason it is more | |
383 | useful to abort only the portion of the operation inside the | |
384 | catch_errors. Note that quit should return to the command line | |
385 | fairly quickly, even if some further processing is being done. */ | |
bd5635a1 RP |
386 | |
387 | int | |
9748446f | 388 | catch_errors (func, args, errstring, mask) |
30875e1c | 389 | int (*func) PARAMS ((char *)); |
9748446f | 390 | PTR args; |
bd5635a1 | 391 | char *errstring; |
9748446f | 392 | return_mask mask; |
bd5635a1 | 393 | { |
9748446f JK |
394 | jmp_buf saved_error; |
395 | jmp_buf saved_quit; | |
396 | jmp_buf tmp_jmp; | |
bd5635a1 RP |
397 | int val; |
398 | struct cleanup *saved_cleanup_chain; | |
81066208 | 399 | char *saved_error_pre_print; |
bd5635a1 RP |
400 | |
401 | saved_cleanup_chain = save_cleanups (); | |
81066208 | 402 | saved_error_pre_print = error_pre_print; |
bd5635a1 | 403 | |
9748446f JK |
404 | if (mask & RETURN_MASK_ERROR) |
405 | memcpy ((char *)saved_error, (char *)error_return, sizeof (jmp_buf)); | |
406 | if (mask & RETURN_MASK_QUIT) | |
407 | memcpy (saved_quit, quit_return, sizeof (jmp_buf)); | |
81066208 | 408 | error_pre_print = errstring; |
bd5635a1 | 409 | |
9748446f JK |
410 | if (setjmp (tmp_jmp) == 0) |
411 | { | |
412 | if (mask & RETURN_MASK_ERROR) | |
413 | memcpy (error_return, tmp_jmp, sizeof (jmp_buf)); | |
414 | if (mask & RETURN_MASK_QUIT) | |
415 | memcpy (quit_return, tmp_jmp, sizeof (jmp_buf)); | |
416 | val = (*func) (args); | |
417 | } | |
bd5635a1 | 418 | else |
81066208 | 419 | val = 0; |
bd5635a1 RP |
420 | |
421 | restore_cleanups (saved_cleanup_chain); | |
422 | ||
81066208 | 423 | error_pre_print = saved_error_pre_print; |
9748446f JK |
424 | if (mask & RETURN_MASK_ERROR) |
425 | memcpy (error_return, saved_error, sizeof (jmp_buf)); | |
426 | if (mask & RETURN_MASK_QUIT) | |
427 | memcpy (quit_return, saved_quit, sizeof (jmp_buf)); | |
bd5635a1 RP |
428 | return val; |
429 | } | |
430 | ||
431 | /* Handler for SIGHUP. */ | |
432 | ||
433 | static void | |
30875e1c SG |
434 | disconnect (signo) |
435 | int signo; | |
bd5635a1 | 436 | { |
6fe90fc8 | 437 | catch_errors (quit_cover, NULL, |
9748446f | 438 | "Could not kill the program being debugged", RETURN_MASK_ALL); |
597dc86b | 439 | signal (SIGHUP, SIG_DFL); |
bd5635a1 RP |
440 | kill (getpid (), SIGHUP); |
441 | } | |
597dc86b SG |
442 | |
443 | /* Just a little helper function for disconnect(). */ | |
444 | ||
445 | static int | |
446 | quit_cover (s) | |
447 | char *s; | |
448 | { | |
449 | caution = 0; /* Throw caution to the wind -- we're exiting. | |
450 | This prevents asking the user dumb questions. */ | |
451 | quit_command((char *)0, 0); | |
452 | return 0; | |
453 | } | |
bd5635a1 RP |
454 | \f |
455 | /* Clean up on error during a "source" command (or execution of a | |
456 | user-defined command). */ | |
457 | ||
458 | static void | |
459 | source_cleanup (stream) | |
460 | FILE *stream; | |
461 | { | |
462 | /* Restore the previous input stream. */ | |
463 | instream = stream; | |
464 | } | |
465 | ||
466 | /* Read commands from STREAM. */ | |
467 | static void | |
468 | read_command_file (stream) | |
469 | FILE *stream; | |
470 | { | |
471 | struct cleanup *cleanups; | |
472 | ||
473 | cleanups = make_cleanup (source_cleanup, instream); | |
474 | instream = stream; | |
475 | command_loop (); | |
476 | do_cleanups (cleanups); | |
477 | } | |
478 | \f | |
479 | int | |
480 | main (argc, argv) | |
481 | int argc; | |
482 | char **argv; | |
483 | { | |
484 | int count; | |
bd5635a1 RP |
485 | static int quiet = 0; |
486 | static int batch = 0; | |
487 | ||
488 | /* Pointers to various arguments from command line. */ | |
489 | char *symarg = NULL; | |
490 | char *execarg = NULL; | |
491 | char *corearg = NULL; | |
492 | char *cdarg = NULL; | |
493 | char *ttyarg = NULL; | |
494 | ||
495 | /* Pointers to all arguments of +command option. */ | |
496 | char **cmdarg; | |
497 | /* Allocated size of cmdarg. */ | |
498 | int cmdsize; | |
499 | /* Number of elements of cmdarg used. */ | |
500 | int ncmd; | |
501 | ||
502 | /* Indices of all arguments of +directory option. */ | |
503 | char **dirarg; | |
504 | /* Allocated size. */ | |
505 | int dirsize; | |
506 | /* Number of elements used. */ | |
507 | int ndir; | |
508 | ||
3a16d640 JG |
509 | struct stat homebuf, cwdbuf; |
510 | char *homedir, *homeinit; | |
511 | ||
bd5635a1 RP |
512 | register int i; |
513 | ||
514 | /* This needs to happen before the first use of malloc. */ | |
318bf84f | 515 | init_malloc ((PTR) NULL); |
bd5635a1 RP |
516 | |
517 | #if defined (ALIGN_STACK_ON_STARTUP) | |
518 | i = (int) &count & 0x3; | |
519 | if (i != 0) | |
520 | alloca (4 - i); | |
521 | #endif | |
522 | ||
bd099407 | 523 | /* If error() is called from initialization code, just exit */ |
9748446f | 524 | if (SET_TOP_LEVEL ()) { |
bd099407 JG |
525 | exit(1); |
526 | } | |
527 | ||
bd5635a1 RP |
528 | cmdsize = 1; |
529 | cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg)); | |
530 | ncmd = 0; | |
531 | dirsize = 1; | |
532 | dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg)); | |
533 | ndir = 0; | |
534 | ||
535 | quit_flag = 0; | |
536 | line = (char *) xmalloc (linesize); | |
537 | line[0] = '\0'; /* Terminate saved (now empty) cmd line */ | |
538 | instream = stdin; | |
539 | ||
f7402c04 | 540 | getcwd (dirbuf, sizeof (dirbuf)); |
bd5635a1 RP |
541 | current_directory = dirbuf; |
542 | ||
543 | #ifdef SET_STACK_LIMIT_HUGE | |
544 | { | |
545 | struct rlimit rlim; | |
546 | ||
547 | /* Set the stack limit huge so that alloca (particularly stringtab | |
548 | * in dbxread.c) does not fail. */ | |
549 | getrlimit (RLIMIT_STACK, &rlim); | |
550 | original_stack_limit = rlim.rlim_cur; | |
551 | rlim.rlim_cur = rlim.rlim_max; | |
552 | setrlimit (RLIMIT_STACK, &rlim); | |
553 | } | |
554 | #endif /* SET_STACK_LIMIT_HUGE */ | |
555 | ||
556 | /* Parse arguments and options. */ | |
557 | { | |
558 | int c; | |
559 | static int print_help; | |
560 | /* When var field is 0, use flag field to record the equivalent | |
561 | short option (or arbitrary numbers starting at 10 for those | |
562 | with no equivalent). */ | |
563 | static struct option long_options[] = | |
564 | { | |
318bf84f FF |
565 | {"readnow", no_argument, &readnow_symbol_files, 1}, |
566 | {"r", no_argument, &readnow_symbol_files, 1}, | |
567 | {"mapped", no_argument, &mapped_symbol_files, 1}, | |
568 | {"m", no_argument, &mapped_symbol_files, 1}, | |
ee0613d1 JG |
569 | {"quiet", no_argument, &quiet, 1}, |
570 | {"q", no_argument, &quiet, 1}, | |
fb29d681 | 571 | {"silent", no_argument, &quiet, 1}, |
ee0613d1 JG |
572 | {"nx", no_argument, &inhibit_gdbinit, 1}, |
573 | {"n", no_argument, &inhibit_gdbinit, 1}, | |
574 | {"batch", no_argument, &batch, 1}, | |
575 | {"epoch", no_argument, &epoch_interface, 1}, | |
576 | {"fullname", no_argument, &frame_file_full_name, 1}, | |
577 | {"f", no_argument, &frame_file_full_name, 1}, | |
578 | {"help", no_argument, &print_help, 1}, | |
579 | {"se", required_argument, 0, 10}, | |
580 | {"symbols", required_argument, 0, 's'}, | |
581 | {"s", required_argument, 0, 's'}, | |
582 | {"exec", required_argument, 0, 'e'}, | |
583 | {"e", required_argument, 0, 'e'}, | |
584 | {"core", required_argument, 0, 'c'}, | |
585 | {"c", required_argument, 0, 'c'}, | |
586 | {"command", required_argument, 0, 'x'}, | |
587 | {"x", required_argument, 0, 'x'}, | |
588 | {"directory", required_argument, 0, 'd'}, | |
589 | {"cd", required_argument, 0, 11}, | |
590 | {"tty", required_argument, 0, 't'}, | |
591 | {"baud", required_argument, 0, 'b'}, | |
592 | {"b", required_argument, 0, 'b'}, | |
bd5635a1 RP |
593 | /* Allow machine descriptions to add more options... */ |
594 | #ifdef ADDITIONAL_OPTIONS | |
595 | ADDITIONAL_OPTIONS | |
596 | #endif | |
ee0613d1 | 597 | {0, no_argument, 0, 0}, |
bd5635a1 RP |
598 | }; |
599 | ||
600 | while (1) | |
601 | { | |
ee0613d1 JG |
602 | int option_index; |
603 | ||
bd5635a1 RP |
604 | c = getopt_long_only (argc, argv, "", |
605 | long_options, &option_index); | |
606 | if (c == EOF) | |
607 | break; | |
608 | ||
609 | /* Long option that takes an argument. */ | |
610 | if (c == 0 && long_options[option_index].flag == 0) | |
611 | c = long_options[option_index].val; | |
612 | ||
613 | switch (c) | |
614 | { | |
615 | case 0: | |
616 | /* Long option that just sets a flag. */ | |
617 | break; | |
618 | case 10: | |
619 | symarg = optarg; | |
620 | execarg = optarg; | |
621 | break; | |
622 | case 11: | |
623 | cdarg = optarg; | |
624 | break; | |
625 | case 's': | |
626 | symarg = optarg; | |
627 | break; | |
628 | case 'e': | |
629 | execarg = optarg; | |
630 | break; | |
631 | case 'c': | |
632 | corearg = optarg; | |
633 | break; | |
634 | case 'x': | |
635 | cmdarg[ncmd++] = optarg; | |
636 | if (ncmd >= cmdsize) | |
637 | { | |
638 | cmdsize *= 2; | |
639 | cmdarg = (char **) xrealloc ((char *)cmdarg, | |
640 | cmdsize * sizeof (*cmdarg)); | |
641 | } | |
642 | break; | |
643 | case 'd': | |
644 | dirarg[ndir++] = optarg; | |
645 | if (ndir >= dirsize) | |
646 | { | |
647 | dirsize *= 2; | |
648 | dirarg = (char **) xrealloc ((char *)dirarg, | |
649 | dirsize * sizeof (*dirarg)); | |
650 | } | |
651 | break; | |
652 | case 't': | |
653 | ttyarg = optarg; | |
654 | break; | |
655 | case 'q': | |
656 | quiet = 1; | |
657 | break; | |
658 | case 'b': | |
659 | baud_rate = optarg; | |
660 | break; | |
661 | #ifdef ADDITIONAL_OPTION_CASES | |
662 | ADDITIONAL_OPTION_CASES | |
663 | #endif | |
664 | case '?': | |
597dc86b | 665 | fprintf (stderr, |
fb29d681 | 666 | "Use `%s --help' for a complete list of options.\n", |
bd5635a1 RP |
667 | argv[0]); |
668 | exit (1); | |
669 | } | |
bd5635a1 | 670 | } |
fb29d681 | 671 | |
bd5635a1 RP |
672 | if (print_help) |
673 | { | |
fb29d681 JG |
674 | print_gdb_version(stderr); |
675 | fputs ("\n\ | |
676 | This is the GNU debugger. Usage:\n\ | |
677 | gdb [options] [executable-file [core-file or process-id]]\n\ | |
678 | Options:\n\ | |
bd5635a1 RP |
679 | -help Print this message.\n\ |
680 | -quiet Do not print version number on startup.\n\ | |
681 | -fullname Output information used by emacs-GDB interface.\n\ | |
682 | -epoch Output information used by epoch emacs-GDB interface.\n\ | |
683 | -batch Exit after processing options.\n\ | |
684 | -nx Do not read .gdbinit file.\n\ | |
685 | -tty=TTY Use TTY for input/output by the program being debugged.\n\ | |
686 | -cd=DIR Change current directory to DIR.\n\ | |
687 | -directory=DIR Search for source files in DIR.\n\ | |
688 | -command=FILE Execute GDB commands from FILE.\n\ | |
689 | -symbols=SYMFILE Read symbols from SYMFILE.\n\ | |
690 | -exec=EXECFILE Use EXECFILE as the executable.\n\ | |
691 | -se=FILE Use FILE as symbol file and executable file.\n\ | |
692 | -core=COREFILE Analyze the core dump COREFILE.\n\ | |
b0246b3b FF |
693 | -b BAUDRATE Set serial port baud rate used for remote debugging.\n\ |
694 | -mapped Use mapped symbol files if supported on this system.\n\ | |
695 | -readnow Fully read symbol files on first access.\n\ | |
bd5635a1 RP |
696 | ", stderr); |
697 | #ifdef ADDITIONAL_OPTION_HELP | |
698 | fputs (ADDITIONAL_OPTION_HELP, stderr); | |
699 | #endif | |
700 | fputs ("\n\ | |
701 | For more information, type \"help\" from within GDB, or consult the\n\ | |
702 | GDB manual (available as on-line info or a printed manual).\n", stderr); | |
703 | /* Exiting after printing this message seems like | |
704 | the most useful thing to do. */ | |
705 | exit (0); | |
706 | } | |
707 | ||
708 | /* OK, that's all the options. The other arguments are filenames. */ | |
709 | count = 0; | |
710 | for (; optind < argc; optind++) | |
711 | switch (++count) | |
712 | { | |
713 | case 1: | |
714 | symarg = argv[optind]; | |
715 | execarg = argv[optind]; | |
716 | break; | |
717 | case 2: | |
718 | corearg = argv[optind]; | |
719 | break; | |
720 | case 3: | |
597dc86b | 721 | fprintf (stderr, |
bd5635a1 RP |
722 | "Excess command line arguments ignored. (%s%s)\n", |
723 | argv[optind], (optind == argc - 1) ? "" : " ..."); | |
724 | break; | |
725 | } | |
726 | if (batch) | |
727 | quiet = 1; | |
728 | } | |
729 | ||
730 | /* Run the init function of each source file */ | |
731 | ||
732 | initialize_cmd_lists (); /* This needs to be done first */ | |
733 | initialize_all_files (); | |
734 | initialize_main (); /* But that omits this file! Do it now */ | |
735 | init_signals (); | |
736 | ||
737 | if (!quiet) | |
738 | { | |
81066208 JG |
739 | /* Print all the junk at the top, with trailing "..." if we are about |
740 | to read a symbol file (possibly slowly). */ | |
741 | print_gnu_advertisement (); | |
fb29d681 | 742 | print_gdb_version (stdout); |
81066208 JG |
743 | if (symarg) |
744 | printf_filtered (".."); | |
bd099407 | 745 | wrap_here(""); |
81066208 | 746 | fflush (stdout); /* Force to screen during slow operations */ |
bd5635a1 RP |
747 | } |
748 | ||
81066208 | 749 | error_pre_print = "\n\n"; |
51b57ded FF |
750 | /* We may get more than one warning, don't double space all of them... */ |
751 | warning_pre_print = "\nwarning: "; | |
81066208 | 752 | |
538280d8 FF |
753 | /* We need a default language for parsing expressions, so simple things like |
754 | "set width 0" won't fail if no language is explicitly set in a config file | |
755 | or implicitly set by reading an executable during startup. */ | |
756 | set_language (language_c); | |
b5af69c3 | 757 | expected_language = current_language; /* don't warn about the change. */ |
538280d8 | 758 | |
3a16d640 JG |
759 | /* Read and execute $HOME/.gdbinit file, if it exists. This is done |
760 | *before* all the command line arguments are processed; it sets | |
761 | global parameters, which are independent of what file you are | |
762 | debugging or what directory you are in. */ | |
763 | homedir = getenv ("HOME"); | |
764 | if (homedir) | |
765 | { | |
766 | homeinit = (char *) alloca (strlen (getenv ("HOME")) + | |
767 | strlen (gdbinit) + 10); | |
768 | strcpy (homeinit, getenv ("HOME")); | |
769 | strcat (homeinit, "/"); | |
770 | strcat (homeinit, gdbinit); | |
771 | if (!inhibit_gdbinit && access (homeinit, R_OK) == 0) | |
772 | { | |
9748446f | 773 | if (!SET_TOP_LEVEL ()) |
3a16d640 JG |
774 | source_command (homeinit, 0); |
775 | } | |
776 | do_cleanups (ALL_CLEANUPS); | |
777 | ||
778 | /* Do stats; no need to do them elsewhere since we'll only | |
779 | need them if homedir is set. Make sure that they are | |
780 | zero in case one of them fails (this guarantees that they | |
781 | won't match if either exists). */ | |
782 | ||
783 | memset (&homebuf, 0, sizeof (struct stat)); | |
784 | memset (&cwdbuf, 0, sizeof (struct stat)); | |
785 | ||
786 | stat (homeinit, &homebuf); | |
787 | stat (gdbinit, &cwdbuf); /* We'll only need this if | |
788 | homedir was set. */ | |
789 | } | |
790 | ||
bd5635a1 RP |
791 | /* Now perform all the actions indicated by the arguments. */ |
792 | if (cdarg != NULL) | |
793 | { | |
9748446f | 794 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
795 | { |
796 | cd_command (cdarg, 0); | |
797 | init_source_path (); | |
798 | } | |
799 | } | |
f266e564 JK |
800 | do_cleanups (ALL_CLEANUPS); |
801 | ||
bd5635a1 | 802 | for (i = 0; i < ndir; i++) |
9748446f | 803 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 804 | directory_command (dirarg[i], 0); |
51b57ded | 805 | free ((PTR)dirarg); |
f266e564 JK |
806 | do_cleanups (ALL_CLEANUPS); |
807 | ||
bd5635a1 RP |
808 | if (execarg != NULL |
809 | && symarg != NULL | |
2e4964ad | 810 | && STREQ (execarg, symarg)) |
bd5635a1 RP |
811 | { |
812 | /* The exec file and the symbol-file are the same. If we can't open | |
813 | it, better only print one error message. */ | |
9748446f | 814 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
815 | { |
816 | exec_file_command (execarg, !batch); | |
81066208 | 817 | symbol_file_command (symarg, 0); |
bd5635a1 RP |
818 | } |
819 | } | |
820 | else | |
821 | { | |
822 | if (execarg != NULL) | |
9748446f | 823 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
824 | exec_file_command (execarg, !batch); |
825 | if (symarg != NULL) | |
9748446f | 826 | if (!SET_TOP_LEVEL ()) |
81066208 | 827 | symbol_file_command (symarg, 0); |
bd5635a1 | 828 | } |
f266e564 JK |
829 | do_cleanups (ALL_CLEANUPS); |
830 | ||
81066208 JG |
831 | /* After the symbol file has been read, print a newline to get us |
832 | beyond the copyright line... But errors should still set off | |
833 | the error message with a (single) blank line. */ | |
afe4ca15 JG |
834 | if (!quiet) |
835 | printf_filtered ("\n"); | |
81066208 | 836 | error_pre_print = "\n"; |
318bf84f | 837 | warning_pre_print = "\nwarning: "; |
81066208 | 838 | |
bd5635a1 | 839 | if (corearg != NULL) |
9748446f | 840 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 841 | core_file_command (corearg, !batch); |
9748446f | 842 | else if (isdigit (corearg[0]) && !SET_TOP_LEVEL ()) |
bd5635a1 | 843 | attach_command (corearg, !batch); |
f266e564 | 844 | do_cleanups (ALL_CLEANUPS); |
bd5635a1 RP |
845 | |
846 | if (ttyarg != NULL) | |
9748446f | 847 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 848 | tty_command (ttyarg, !batch); |
f266e564 | 849 | do_cleanups (ALL_CLEANUPS); |
bd5635a1 RP |
850 | |
851 | #ifdef ADDITIONAL_OPTION_HANDLER | |
852 | ADDITIONAL_OPTION_HANDLER; | |
853 | #endif | |
854 | ||
81066208 JG |
855 | /* Error messages should no longer be distinguished with extra output. */ |
856 | error_pre_print = 0; | |
318bf84f | 857 | warning_pre_print = "warning: "; |
81066208 | 858 | |
3a16d640 JG |
859 | /* Read the .gdbinit file in the current directory, *if* it isn't |
860 | the same as the $HOME/.gdbinit file (it should exist, also). */ | |
861 | ||
862 | if (!homedir | |
863 | || memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat))) | |
864 | if (!inhibit_gdbinit && access (gdbinit, R_OK) == 0) | |
bd5635a1 | 865 | { |
9748446f | 866 | if (!SET_TOP_LEVEL ()) |
d75710b0 | 867 | source_command (gdbinit, 0); |
bd5635a1 | 868 | } |
d75710b0 FF |
869 | do_cleanups (ALL_CLEANUPS); |
870 | ||
871 | for (i = 0; i < ncmd; i++) | |
872 | { | |
9748446f | 873 | if (!SET_TOP_LEVEL ()) |
d75710b0 FF |
874 | { |
875 | if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0') | |
876 | read_command_file (stdin); | |
877 | else | |
878 | source_command (cmdarg[i], !batch); | |
879 | do_cleanups (ALL_CLEANUPS); | |
880 | } | |
881 | } | |
51b57ded | 882 | free ((PTR)cmdarg); |
bd5635a1 | 883 | |
8b3c897a SG |
884 | /* Read in the old history after all the command files have been read. */ |
885 | initialize_history(); | |
886 | ||
bd5635a1 RP |
887 | if (batch) |
888 | { | |
889 | /* We have hit the end of the batch file. */ | |
890 | exit (0); | |
891 | } | |
892 | ||
893 | /* Do any host- or target-specific hacks. This is used for i960 targets | |
894 | to force the user to set a nindy target and spec its parameters. */ | |
895 | ||
896 | #ifdef BEFORE_MAIN_LOOP_HOOK | |
897 | BEFORE_MAIN_LOOP_HOOK; | |
898 | #endif | |
899 | ||
900 | /* The command loop. */ | |
901 | ||
902 | while (1) | |
903 | { | |
9748446f | 904 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 905 | { |
f266e564 | 906 | do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */ |
bd5635a1 RP |
907 | command_loop (); |
908 | quit_command ((char *)0, instream == stdin); | |
909 | } | |
910 | } | |
911 | /* No exit -- exit is through quit_command. */ | |
912 | } | |
913 | ||
b5af69c3 JG |
914 | void |
915 | execute_user_command (c, args) | |
916 | struct cmd_list_element *c; | |
917 | char *args; | |
918 | { | |
919 | register struct command_line *cmdlines; | |
920 | struct cleanup *old_chain; | |
921 | ||
922 | if (args) | |
923 | error ("User-defined commands cannot take arguments."); | |
924 | ||
925 | cmdlines = c->user_commands; | |
926 | if (cmdlines == 0) | |
927 | /* Null command */ | |
928 | return; | |
929 | ||
930 | /* Set the instream to 0, indicating execution of a | |
931 | user-defined function. */ | |
932 | old_chain = make_cleanup (source_cleanup, instream); | |
933 | instream = (FILE *) 0; | |
934 | while (cmdlines) | |
935 | { | |
936 | execute_command (cmdlines->line, 0); | |
937 | cmdlines = cmdlines->next; | |
938 | } | |
939 | do_cleanups (old_chain); | |
940 | } | |
941 | ||
bd5635a1 RP |
942 | /* Execute the line P as a command. |
943 | Pass FROM_TTY as second argument to the defining function. */ | |
944 | ||
945 | void | |
946 | execute_command (p, from_tty) | |
947 | char *p; | |
948 | int from_tty; | |
949 | { | |
950 | register struct cmd_list_element *c; | |
bd099407 | 951 | register enum language flang; |
bd099407 | 952 | static int warned = 0; |
bd5635a1 RP |
953 | |
954 | free_all_values (); | |
955 | ||
956 | /* This can happen when command_line_input hits end of file. */ | |
957 | if (p == NULL) | |
958 | return; | |
959 | ||
960 | while (*p == ' ' || *p == '\t') p++; | |
961 | if (*p) | |
962 | { | |
963 | char *arg; | |
964 | ||
965 | c = lookup_cmd (&p, cmdlist, "", 0, 1); | |
966 | /* Pass null arg rather than an empty one. */ | |
967 | arg = *p ? p : 0; | |
b5af69c3 JG |
968 | |
969 | /* If this command has been hooked, run the hook first. */ | |
970 | if (c->hook) | |
971 | execute_user_command (c->hook, (char *)0); | |
972 | ||
bd5635a1 | 973 | if (c->class == class_user) |
b5af69c3 | 974 | execute_user_command (c, arg); |
bd5635a1 RP |
975 | else if (c->type == set_cmd || c->type == show_cmd) |
976 | do_setshow_command (arg, from_tty & caution, c); | |
30875e1c | 977 | else if (c->function.cfunc == NO_FUNCTION) |
bd5635a1 RP |
978 | error ("That is not a command, just a help topic."); |
979 | else | |
30875e1c | 980 | (*c->function.cfunc) (arg, from_tty & caution); |
bd099407 JG |
981 | } |
982 | ||
afe4ca15 | 983 | /* Tell the user if the language has changed (except first time). */ |
b5af69c3 | 984 | if (current_language != expected_language) |
bd099407 JG |
985 | { |
986 | if (language_mode == language_mode_auto) { | |
b5af69c3 | 987 | language_info (1); /* Print what changed. */ |
bd5635a1 | 988 | } |
bd099407 JG |
989 | warned = 0; |
990 | } | |
991 | ||
992 | /* Warn the user if the working language does not match the | |
993 | language of the current frame. Only warn the user if we are | |
994 | actually running the program, i.e. there is a stack. */ | |
afe4ca15 JG |
995 | /* FIXME: This should be cacheing the frame and only running when |
996 | the frame changes. */ | |
bd099407 JG |
997 | if (target_has_stack) |
998 | { | |
afe4ca15 JG |
999 | flang = get_frame_language (); |
1000 | if (!warned | |
1001 | && flang != language_unknown | |
1002 | && flang != current_language->la_language) | |
bd099407 JG |
1003 | { |
1004 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
1005 | warned = 1; | |
1006 | } | |
1007 | } | |
bd5635a1 RP |
1008 | } |
1009 | ||
1010 | /* ARGSUSED */ | |
30875e1c | 1011 | static void |
f266e564 | 1012 | command_loop_marker (foo) |
bd5635a1 RP |
1013 | int foo; |
1014 | { | |
1015 | } | |
1016 | ||
1017 | /* Read commands from `instream' and execute them | |
1018 | until end of file or error reading instream. */ | |
30875e1c | 1019 | static void |
bd5635a1 RP |
1020 | command_loop () |
1021 | { | |
1022 | struct cleanup *old_chain; | |
1023 | char *command; | |
1024 | int stdin_is_tty = ISATTY (stdin); | |
1025 | ||
1026 | while (!feof (instream)) | |
1027 | { | |
1028 | if (window_hook && instream == stdin) | |
1029 | (*window_hook) (instream, prompt); | |
1030 | ||
1031 | quit_flag = 0; | |
1032 | if (instream == stdin && stdin_is_tty) | |
1033 | reinitialize_more_filter (); | |
f266e564 | 1034 | old_chain = make_cleanup (command_loop_marker, 0); |
30875e1c | 1035 | command = command_line_input (instream == stdin ? prompt : (char *) NULL, |
bd5635a1 RP |
1036 | instream == stdin); |
1037 | if (command == 0) | |
1038 | return; | |
1039 | execute_command (command, instream == stdin); | |
1040 | /* Do any commands attached to breakpoint we stopped at. */ | |
1041 | bpstat_do_actions (&stop_bpstat); | |
1042 | do_cleanups (old_chain); | |
1043 | } | |
1044 | } | |
1045 | \f | |
1046 | /* Commands call this if they do not want to be repeated by null lines. */ | |
1047 | ||
1048 | void | |
1049 | dont_repeat () | |
1050 | { | |
1051 | /* If we aren't reading from standard input, we are saving the last | |
1052 | thing read from stdin in line and don't want to delete it. Null lines | |
1053 | won't repeat here in any case. */ | |
1054 | if (instream == stdin) | |
1055 | *line = 0; | |
1056 | } | |
1057 | \f | |
1058 | /* Read a line from the stream "instream" without command line editing. | |
1059 | ||
1060 | It prints PRROMPT once at the start. | |
bdbd5f50 JG |
1061 | Action is compatible with "readline", e.g. space for the result is |
1062 | malloc'd and should be freed by the caller. | |
bd5635a1 | 1063 | |
bdbd5f50 | 1064 | A NULL return means end of file. */ |
bd5635a1 | 1065 | char * |
bdbd5f50 | 1066 | gdb_readline (prrompt) |
bd5635a1 | 1067 | char *prrompt; |
bd5635a1 RP |
1068 | { |
1069 | int c; | |
1070 | char *result; | |
1071 | int input_index = 0; | |
1072 | int result_size = 80; | |
1073 | ||
1074 | if (prrompt) | |
1075 | { | |
c35475f9 JG |
1076 | /* Don't use a _filtered function here. It causes the assumed |
1077 | character position to be off, since the newline we read from | |
1078 | the user is not accounted for. */ | |
1079 | fputs (prrompt, stdout); | |
bd5635a1 RP |
1080 | fflush (stdout); |
1081 | } | |
1082 | ||
bdbd5f50 | 1083 | result = (char *) xmalloc (result_size); |
bd5635a1 RP |
1084 | |
1085 | while (1) | |
1086 | { | |
1087 | /* Read from stdin if we are executing a user defined command. | |
1088 | This is the right thing for prompt_for_continue, at least. */ | |
1089 | c = fgetc (instream ? instream : stdin); | |
bdbd5f50 JG |
1090 | |
1091 | if (c == EOF) | |
bd5635a1 | 1092 | { |
bdbd5f50 JG |
1093 | free (result); |
1094 | return NULL; | |
bd5635a1 | 1095 | } |
bd5635a1 | 1096 | |
bdbd5f50 JG |
1097 | if (c == '\n') |
1098 | break; | |
bd5635a1 | 1099 | |
bdbd5f50 JG |
1100 | result[input_index++] = c; |
1101 | while (input_index >= result_size) | |
1102 | { | |
1103 | result_size *= 2; | |
1104 | result = (char *) xrealloc (result, result_size); | |
1105 | } | |
bd5635a1 | 1106 | } |
bdbd5f50 JG |
1107 | |
1108 | result[input_index++] = '\0'; | |
1109 | return result; | |
bd5635a1 RP |
1110 | } |
1111 | ||
bd5635a1 RP |
1112 | /* Variables which control command line editing and history |
1113 | substitution. These variables are given default values at the end | |
1114 | of this file. */ | |
1115 | static int command_editing_p; | |
1116 | static int history_expansion_p; | |
1117 | static int write_history_p; | |
1118 | static int history_size; | |
1119 | static char *history_filename; | |
1120 | ||
1121 | /* Variables which are necessary for fancy command line editing. */ | |
1122 | char *gdb_completer_word_break_characters = | |
a8e033f2 SG |
1123 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-"; |
1124 | ||
1125 | /* When completing on command names, we remove '-' from the list of | |
1126 | word break characters, since we use it in command names. If the | |
1127 | readline library sees one in any of the current completion strings, | |
1128 | it thinks that the string needs to be quoted and automatically supplies | |
1129 | a leading quote. */ | |
1130 | char *gdb_completer_command_word_break_characters = | |
1131 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,"; | |
1132 | ||
51b57ded FF |
1133 | /* Characters that can be used to quote completion strings. Note that we |
1134 | can't include '"' because the gdb C parser treats such quoted sequences | |
1135 | as strings. */ | |
1136 | char *gdb_completer_quote_characters = | |
1137 | "'"; | |
bd5635a1 RP |
1138 | |
1139 | /* Functions that are used as part of the fancy command line editing. */ | |
1140 | ||
1141 | /* This can be used for functions which don't want to complete on symbols | |
1142 | but don't want to complete on anything else either. */ | |
1143 | /* ARGSUSED */ | |
1144 | char ** | |
1145 | noop_completer (text) | |
1146 | char *text; | |
1147 | { | |
1148 | return NULL; | |
1149 | } | |
1150 | ||
bd50d1b0 JK |
1151 | /* Complete on filenames. */ |
1152 | /* FIXME: This would be a lot more useful if the word breaks got set | |
1153 | to not include '/'. Probably best to make it up to each completer | |
1154 | to do its own word breaking. */ | |
1155 | char ** | |
1156 | filename_completer (text) | |
1157 | char *text; | |
1158 | { | |
1159 | /* From readline. */ | |
1160 | extern char *filename_completion_function (); | |
1161 | int subsequent_name; | |
1162 | char **return_val; | |
1163 | int return_val_used; | |
1164 | int return_val_alloced; | |
1165 | ||
1166 | return_val_used = 0; | |
1167 | /* Small for testing. */ | |
1168 | return_val_alloced = 1; | |
1169 | return_val = (char **) xmalloc (return_val_alloced * sizeof (char *)); | |
1170 | ||
1171 | subsequent_name = 0; | |
1172 | while (1) | |
1173 | { | |
1174 | char *p; | |
1175 | p = filename_completion_function (text, subsequent_name); | |
1176 | if (return_val_used >= return_val_alloced) | |
1177 | { | |
1178 | return_val_alloced *= 2; | |
1179 | return_val = | |
1180 | (char **) xrealloc (return_val, | |
1181 | return_val_alloced * sizeof (char *)); | |
1182 | } | |
1183 | /* The string itself has already been stored in newly malloc'd space | |
1184 | for us by filename_completion_function. */ | |
1185 | return_val[return_val_used++] = p; | |
1186 | if (p == NULL) | |
1187 | break; | |
1188 | subsequent_name = 1; | |
1189 | } | |
1190 | return return_val; | |
1191 | } | |
1192 | ||
51b57ded FF |
1193 | /* Generate symbol names one by one for the completer. Each time we are |
1194 | called return another potential completion to the caller. | |
1195 | ||
1196 | TEXT is what we expect the symbol to start with. | |
1197 | ||
1198 | MATCHES is the number of matches that have currently been collected from | |
1199 | calling this completion function. When zero, then we need to initialize, | |
1200 | otherwise the initialization has already taken place and we can just | |
1201 | return the next potential completion string. | |
30875e1c | 1202 | |
51b57ded FF |
1203 | Returns NULL if there are no more completions, else a pointer to a string |
1204 | which is a possible completion. | |
1205 | ||
1206 | RL_LINE_BUFFER is available to be looked at; it contains the entire text | |
1207 | of the line. RL_POINT is the offset in that line of the cursor. You | |
1208 | should pretend that the line ends at RL_POINT. */ | |
1209 | ||
30875e1c | 1210 | static char * |
51b57ded | 1211 | symbol_completion_function (text, matches) |
bd5635a1 | 1212 | char *text; |
51b57ded | 1213 | int matches; |
bd5635a1 | 1214 | { |
51b57ded FF |
1215 | static char **list = (char **)NULL; /* Cache of completions */ |
1216 | static int index; /* Next cached completion */ | |
1217 | char *output = NULL; | |
bd5635a1 RP |
1218 | char *tmp_command, *p; |
1219 | struct cmd_list_element *c, *result_list; | |
51b57ded FF |
1220 | extern char *rl_line_buffer; |
1221 | extern int rl_point; | |
bd5635a1 | 1222 | |
51b57ded | 1223 | if (matches == 0) |
bd5635a1 | 1224 | { |
51b57ded FF |
1225 | /* The caller is beginning to accumulate a new set of completions, so |
1226 | we need to find all of them now, and cache them for returning one at | |
1227 | a time on future calls. */ | |
1228 | ||
bd5635a1 | 1229 | if (list) |
51b57ded FF |
1230 | { |
1231 | /* Free the storage used by LIST, but not by the strings inside. | |
1232 | This is because rl_complete_internal () frees the strings. */ | |
1233 | free ((PTR)list); | |
1234 | } | |
bd5635a1 RP |
1235 | list = 0; |
1236 | index = 0; | |
1237 | ||
a8e033f2 SG |
1238 | /* Choose the default set of word break characters to break completions. |
1239 | If we later find out that we are doing completions on command strings | |
1240 | (as opposed to strings supplied by the individual command completer | |
1241 | functions, which can be any string) then we will switch to the | |
1242 | special word break set for command strings, which leaves out the | |
1243 | '-' character used in some commands. */ | |
1244 | ||
bd50d1b0 JK |
1245 | /* FIXME: Using rl_completer_word_break_characters is the wrong |
1246 | approach, because "show foo-bar<TAB>" won't know to use the | |
1247 | new set until too late. Better approach is to do the word breaking | |
1248 | ourself. */ | |
1249 | ||
a8e033f2 SG |
1250 | rl_completer_word_break_characters = |
1251 | gdb_completer_word_break_characters; | |
1252 | ||
51b57ded | 1253 | /* Decide whether to complete on a list of gdb commands or on symbols. */ |
bd5635a1 RP |
1254 | tmp_command = (char *) alloca (rl_point + 1); |
1255 | p = tmp_command; | |
1256 | ||
1257 | strncpy (tmp_command, rl_line_buffer, rl_point); | |
1258 | tmp_command[rl_point] = '\0'; | |
1259 | ||
1260 | if (rl_point == 0) | |
1261 | { | |
51b57ded FF |
1262 | /* An empty line we want to consider ambiguous; that is, it |
1263 | could be any command. */ | |
bd5635a1 RP |
1264 | c = (struct cmd_list_element *) -1; |
1265 | result_list = 0; | |
1266 | } | |
1267 | else | |
51b57ded FF |
1268 | { |
1269 | c = lookup_cmd_1 (&p, cmdlist, &result_list, 1); | |
1270 | } | |
bd5635a1 RP |
1271 | |
1272 | /* Move p up to the next interesting thing. */ | |
1273 | while (*p == ' ' || *p == '\t') | |
51b57ded FF |
1274 | { |
1275 | p++; | |
1276 | } | |
bd5635a1 RP |
1277 | |
1278 | if (!c) | |
51b57ded FF |
1279 | { |
1280 | /* He's typed something unrecognizable. Sigh. */ | |
1281 | list = NULL; | |
1282 | } | |
bd5635a1 RP |
1283 | else if (c == (struct cmd_list_element *) -1) |
1284 | { | |
1285 | /* If we didn't recognize everything up to the thing that | |
1286 | needs completing, and we don't know what command it is | |
a8e033f2 | 1287 | yet, we are in trouble. */ |
51b57ded FF |
1288 | |
1289 | if (p + strlen(text) != tmp_command + rl_point) | |
1290 | { | |
a8e033f2 SG |
1291 | /* This really should not produce an error. Better would |
1292 | be to pretend to hit RETURN here; this would produce a | |
1293 | response like "Ambiguous command: foo, foobar, etc", | |
1294 | and leave the line available for re-entry with ^P. | |
1295 | Instead, this error blows away the user's typed input | |
1296 | without any way to get it back. */ | |
1297 | error (" Unrecognized command."); | |
bd5635a1 | 1298 | } |
bd5635a1 RP |
1299 | |
1300 | /* He's typed something ambiguous. This is easier. */ | |
1301 | if (result_list) | |
51b57ded FF |
1302 | { |
1303 | list = complete_on_cmdlist (*result_list->prefixlist, text); | |
1304 | } | |
bd5635a1 | 1305 | else |
51b57ded FF |
1306 | { |
1307 | list = complete_on_cmdlist (cmdlist, text); | |
1308 | } | |
a8e033f2 SG |
1309 | rl_completer_word_break_characters = |
1310 | gdb_completer_command_word_break_characters; | |
bd5635a1 RP |
1311 | } |
1312 | else | |
1313 | { | |
1314 | /* If we've gotten this far, gdb has recognized a full | |
1315 | command. There are several possibilities: | |
1316 | ||
1317 | 1) We need to complete on the command. | |
1318 | 2) We need to complete on the possibilities coming after | |
1319 | the command. | |
1320 | 2) We need to complete the text of what comes after the | |
1321 | command. */ | |
1322 | ||
1323 | if (!*p && *text) | |
51b57ded FF |
1324 | { |
1325 | /* Always (might be longer versions of thie command). */ | |
1326 | list = complete_on_cmdlist (result_list, text); | |
a8e033f2 SG |
1327 | rl_completer_word_break_characters = |
1328 | gdb_completer_command_word_break_characters; | |
51b57ded | 1329 | } |
bd5635a1 RP |
1330 | else if (!*p && !*text) |
1331 | { | |
1332 | if (c->prefixlist) | |
51b57ded FF |
1333 | { |
1334 | list = complete_on_cmdlist (*c->prefixlist, ""); | |
a8e033f2 SG |
1335 | rl_completer_word_break_characters = |
1336 | gdb_completer_command_word_break_characters; | |
51b57ded | 1337 | } |
bd5635a1 | 1338 | else |
51b57ded FF |
1339 | { |
1340 | list = (*c->completer) (""); | |
1341 | } | |
bd5635a1 RP |
1342 | } |
1343 | else | |
1344 | { | |
1345 | if (c->prefixlist && !c->allow_unknown) | |
1346 | { | |
51b57ded FF |
1347 | /* Something like "info adsfkdj". But error() is not the |
1348 | proper response; just return no completions instead. */ | |
bd5635a1 | 1349 | list = NULL; |
bd5635a1 RP |
1350 | } |
1351 | else | |
51b57ded FF |
1352 | { |
1353 | list = (*c->completer) (text); | |
1354 | } | |
bd5635a1 RP |
1355 | } |
1356 | } | |
1357 | } | |
1358 | ||
51b57ded FF |
1359 | /* If we found a list of potential completions during initialization then |
1360 | dole them out one at a time. The vector of completions is NULL | |
1361 | terminated, so after returning the last one, return NULL (and continue | |
1362 | to do so) each time we are called after that, until a new list is | |
1363 | available. */ | |
bd5635a1 | 1364 | |
51b57ded FF |
1365 | if (list) |
1366 | { | |
1367 | output = list[index]; | |
1368 | if (output) | |
1369 | { | |
1370 | index++; | |
1371 | } | |
1372 | } | |
bd5635a1 RP |
1373 | |
1374 | return (output); | |
1375 | } | |
51b57ded FF |
1376 | |
1377 | /* Skip over a possibly quoted word (as defined by the quote characters | |
1378 | and word break characters the completer uses). Returns pointer to the | |
1379 | location after the "word". */ | |
1380 | ||
1381 | char * | |
1382 | skip_quoted (str) | |
1383 | char *str; | |
1384 | { | |
1385 | char quote_char = '\0'; | |
1386 | char *scan; | |
1387 | ||
1388 | for (scan = str; *scan != '\0'; scan++) | |
1389 | { | |
1390 | if (quote_char != '\0') | |
1391 | { | |
1392 | /* Ignore everything until the matching close quote char */ | |
1393 | if (*scan == quote_char) | |
1394 | { | |
1395 | /* Found matching close quote. */ | |
1396 | scan++; | |
1397 | break; | |
1398 | } | |
1399 | } | |
1400 | else if (strchr (gdb_completer_quote_characters, *scan)) | |
1401 | { | |
1402 | /* Found start of a quoted string. */ | |
1403 | quote_char = *scan; | |
1404 | } | |
1405 | else if (strchr (gdb_completer_word_break_characters, *scan)) | |
1406 | { | |
1407 | break; | |
1408 | } | |
1409 | } | |
1410 | return (scan); | |
1411 | } | |
1412 | ||
bd5635a1 RP |
1413 | \f |
1414 | #ifdef STOP_SIGNAL | |
1415 | static void | |
30875e1c SG |
1416 | stop_sig (signo) |
1417 | int signo; | |
bd5635a1 RP |
1418 | { |
1419 | #if STOP_SIGNAL == SIGTSTP | |
1420 | signal (SIGTSTP, SIG_DFL); | |
1421 | sigsetmask (0); | |
1422 | kill (getpid (), SIGTSTP); | |
1423 | signal (SIGTSTP, stop_sig); | |
1424 | #else | |
1425 | signal (STOP_SIGNAL, stop_sig); | |
1426 | #endif | |
597dc86b | 1427 | printf ("%s", prompt); |
bd5635a1 RP |
1428 | fflush (stdout); |
1429 | ||
1430 | /* Forget about any previous command -- null line now will do nothing. */ | |
1431 | dont_repeat (); | |
1432 | } | |
1433 | #endif /* STOP_SIGNAL */ | |
1434 | ||
bd5635a1 | 1435 | /* Initialize signal handlers. */ |
f266e564 | 1436 | static void |
30875e1c SG |
1437 | do_nothing (signo) |
1438 | int signo; | |
f266e564 JK |
1439 | { |
1440 | } | |
1441 | ||
bd5635a1 RP |
1442 | static void |
1443 | init_signals () | |
1444 | { | |
bd5635a1 RP |
1445 | signal (SIGINT, request_quit); |
1446 | ||
1447 | /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get | |
1448 | passed to the inferior, which we don't want. It would be | |
1449 | possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but | |
bdbd5f50 | 1450 | on BSD4.3 systems using vfork, that can affect the |
bd5635a1 | 1451 | GDB process as well as the inferior (the signal handling tables |
bdbd5f50 | 1452 | might be in memory, shared between the two). Since we establish |
bd5635a1 RP |
1453 | a handler for SIGQUIT, when we call exec it will set the signal |
1454 | to SIG_DFL for us. */ | |
1455 | signal (SIGQUIT, do_nothing); | |
1456 | if (signal (SIGHUP, do_nothing) != SIG_IGN) | |
1457 | signal (SIGHUP, disconnect); | |
1458 | signal (SIGFPE, float_handler); | |
1eeba686 PB |
1459 | |
1460 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) | |
1461 | signal (SIGWINCH, SIGWINCH_HANDLER); | |
1462 | #endif | |
bd5635a1 RP |
1463 | } |
1464 | \f | |
1465 | /* Read one line from the command input stream `instream' | |
1466 | into the local static buffer `linebuffer' (whose current length | |
1467 | is `linelength'). | |
1468 | The buffer is made bigger as necessary. | |
1469 | Returns the address of the start of the line. | |
1470 | ||
1471 | NULL is returned for end of file. | |
1472 | ||
1473 | *If* the instream == stdin & stdin is a terminal, the line read | |
1474 | is copied into the file line saver (global var char *line, | |
1475 | length linesize) so that it can be duplicated. | |
1476 | ||
1477 | This routine either uses fancy command line editing or | |
1478 | simple input as the user has requested. */ | |
1479 | ||
1480 | char * | |
1481 | command_line_input (prrompt, repeat) | |
1482 | char *prrompt; | |
1483 | int repeat; | |
1484 | { | |
1485 | static char *linebuffer = 0; | |
30875e1c | 1486 | static unsigned linelength = 0; |
bd5635a1 RP |
1487 | register char *p; |
1488 | char *p1; | |
1489 | char *rl; | |
1490 | char *local_prompt = prrompt; | |
1491 | register int c; | |
1492 | char *nline; | |
1493 | char got_eof = 0; | |
1494 | ||
1495 | if (linebuffer == 0) | |
1496 | { | |
1497 | linelength = 80; | |
1498 | linebuffer = (char *) xmalloc (linelength); | |
1499 | } | |
1500 | ||
1501 | p = linebuffer; | |
1502 | ||
1503 | /* Control-C quits instantly if typed while in this loop | |
1504 | since it should not wait until the user types a newline. */ | |
1505 | immediate_quit++; | |
1506 | #ifdef STOP_SIGNAL | |
1507 | signal (STOP_SIGNAL, stop_sig); | |
1508 | #endif | |
1509 | ||
1510 | while (1) | |
1511 | { | |
e522fb52 JG |
1512 | /* Reports are that some Sys V's don't flush stdout/err on reads |
1513 | from stdin, when stdin/out are sockets rather than ttys. So we | |
1514 | have to do it ourselves, to make emacs-gdb and xxgdb work. | |
1515 | On other machines, doing this once per input should be a cheap nop. */ | |
1516 | fflush (stdout); | |
1517 | fflush (stderr); | |
1518 | ||
bd5635a1 RP |
1519 | /* Don't use fancy stuff if not talking to stdin. */ |
1520 | if (command_editing_p && instream == stdin | |
1521 | && ISATTY (instream)) | |
1522 | rl = readline (local_prompt); | |
1523 | else | |
bdbd5f50 | 1524 | rl = gdb_readline (local_prompt); |
bd5635a1 RP |
1525 | |
1526 | if (!rl || rl == (char *) EOF) | |
1527 | { | |
1528 | got_eof = 1; | |
1529 | break; | |
1530 | } | |
1531 | if (strlen(rl) + 1 + (p - linebuffer) > linelength) | |
1532 | { | |
1533 | linelength = strlen(rl) + 1 + (p - linebuffer); | |
1534 | nline = (char *) xrealloc (linebuffer, linelength); | |
1535 | p += nline - linebuffer; | |
1536 | linebuffer = nline; | |
1537 | } | |
1538 | p1 = rl; | |
1539 | /* Copy line. Don't copy null at end. (Leaves line alone | |
1540 | if this was just a newline) */ | |
1541 | while (*p1) | |
1542 | *p++ = *p1++; | |
1543 | ||
1544 | free (rl); /* Allocated in readline. */ | |
1545 | ||
1546 | if (p == linebuffer || *(p - 1) != '\\') | |
1547 | break; | |
1548 | ||
1549 | p--; /* Put on top of '\'. */ | |
1550 | local_prompt = (char *) 0; | |
1551 | } | |
1552 | ||
1553 | #ifdef STOP_SIGNAL | |
6fe90fc8 | 1554 | signal (STOP_SIGNAL, SIG_DFL); |
bd5635a1 RP |
1555 | #endif |
1556 | immediate_quit--; | |
1557 | ||
1558 | if (got_eof) | |
1559 | return NULL; | |
1560 | ||
1561 | /* Do history expansion if that is wished. */ | |
1562 | if (history_expansion_p && instream == stdin | |
1563 | && ISATTY (instream)) | |
1564 | { | |
1565 | char *history_value; | |
1566 | int expanded; | |
1567 | ||
1568 | *p = '\0'; /* Insert null now. */ | |
1569 | expanded = history_expand (linebuffer, &history_value); | |
1570 | if (expanded) | |
1571 | { | |
1572 | /* Print the changes. */ | |
597dc86b | 1573 | printf ("%s\n", history_value); |
bd5635a1 RP |
1574 | |
1575 | /* If there was an error, call this function again. */ | |
1576 | if (expanded < 0) | |
1577 | { | |
1578 | free (history_value); | |
1579 | return command_line_input (prrompt, repeat); | |
1580 | } | |
1581 | if (strlen (history_value) > linelength) | |
1582 | { | |
1583 | linelength = strlen (history_value) + 1; | |
1584 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
1585 | } | |
1586 | strcpy (linebuffer, history_value); | |
1587 | p = linebuffer + strlen(linebuffer); | |
1588 | free (history_value); | |
1589 | } | |
1590 | } | |
1591 | ||
1592 | /* If we just got an empty line, and that is supposed | |
1593 | to repeat the previous command, return the value in the | |
1594 | global buffer. */ | |
1595 | if (repeat) | |
1596 | { | |
1597 | if (p == linebuffer) | |
1598 | return line; | |
1599 | p1 = linebuffer; | |
1600 | while (*p1 == ' ' || *p1 == '\t') | |
1601 | p1++; | |
1602 | if (!*p1) | |
1603 | return line; | |
1604 | } | |
1605 | ||
1606 | *p = 0; | |
1607 | ||
1608 | /* Add line to history if appropriate. */ | |
1609 | if (instream == stdin | |
1610 | && ISATTY (stdin) && *linebuffer) | |
1611 | add_history (linebuffer); | |
1612 | ||
1613 | /* Note: lines consisting soley of comments are added to the command | |
1614 | history. This is useful when you type a command, and then | |
1615 | realize you don't want to execute it quite yet. You can comment | |
1616 | out the command and then later fetch it from the value history | |
1617 | and remove the '#'. The kill ring is probably better, but some | |
1618 | people are in the habit of commenting things out. */ | |
1619 | p1 = linebuffer; | |
1620 | while ((c = *p1++) != '\0') | |
1621 | { | |
1622 | if (c == '"') | |
1623 | while ((c = *p1++) != '"') | |
1624 | { | |
1625 | /* Make sure an escaped '"' doesn't make us think the string | |
1626 | is ended. */ | |
1627 | if (c == '\\') | |
1628 | parse_escape (&p1); | |
1629 | if (c == '\0') | |
1630 | break; | |
1631 | } | |
1632 | else if (c == '\'') | |
1633 | while ((c = *p1++) != '\'') | |
1634 | { | |
1635 | /* Make sure an escaped '\'' doesn't make us think the string | |
1636 | is ended. */ | |
1637 | if (c == '\\') | |
1638 | parse_escape (&p1); | |
1639 | if (c == '\0') | |
1640 | break; | |
1641 | } | |
1642 | else if (c == '#') | |
1643 | { | |
1644 | /* Found a comment. */ | |
1645 | p1[-1] = '\0'; | |
1646 | break; | |
1647 | } | |
1648 | } | |
1649 | ||
1650 | /* Save into global buffer if appropriate. */ | |
1651 | if (repeat) | |
1652 | { | |
1653 | if (linelength > linesize) | |
1654 | { | |
1655 | line = xrealloc (line, linelength); | |
1656 | linesize = linelength; | |
1657 | } | |
1658 | strcpy (line, linebuffer); | |
1659 | return line; | |
1660 | } | |
1661 | ||
1662 | return linebuffer; | |
1663 | } | |
1664 | \f | |
1665 | /* Read lines from the input stream | |
1666 | and accumulate them in a chain of struct command_line's | |
1667 | which is then returned. */ | |
1668 | ||
1669 | struct command_line * | |
1670 | read_command_lines () | |
1671 | { | |
1672 | struct command_line *first = 0; | |
1673 | register struct command_line *next, *tail = 0; | |
1674 | register char *p, *p1; | |
1675 | struct cleanup *old_chain = 0; | |
1676 | ||
1677 | while (1) | |
1678 | { | |
1679 | dont_repeat (); | |
30875e1c | 1680 | p = command_line_input ((char *) NULL, instream == stdin); |
bd5635a1 RP |
1681 | if (p == NULL) |
1682 | /* Treat end of file like "end". */ | |
1683 | break; | |
1684 | ||
1685 | /* Remove leading and trailing blanks. */ | |
1686 | while (*p == ' ' || *p == '\t') p++; | |
1687 | p1 = p + strlen (p); | |
1688 | while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) p1--; | |
1689 | ||
1690 | /* Is this "end"? */ | |
1691 | if (p1 - p == 3 && !strncmp (p, "end", 3)) | |
1692 | break; | |
1693 | ||
1694 | /* No => add this line to the chain of command lines. */ | |
1695 | next = (struct command_line *) xmalloc (sizeof (struct command_line)); | |
1696 | next->line = savestring (p, p1 - p); | |
1697 | next->next = 0; | |
1698 | if (tail) | |
1699 | { | |
1700 | tail->next = next; | |
1701 | } | |
1702 | else | |
1703 | { | |
1704 | /* We just read the first line. | |
1705 | From now on, arrange to throw away the lines we have | |
1706 | if we quit or get an error while inside this function. */ | |
1707 | first = next; | |
1708 | old_chain = make_cleanup (free_command_lines, &first); | |
1709 | } | |
1710 | tail = next; | |
1711 | } | |
1712 | ||
1713 | dont_repeat (); | |
1714 | ||
1715 | /* Now we are about to return the chain to our caller, | |
1716 | so freeing it becomes his responsibility. */ | |
1717 | if (first) | |
1718 | discard_cleanups (old_chain); | |
1719 | return first; | |
1720 | } | |
1721 | ||
1722 | /* Free a chain of struct command_line's. */ | |
1723 | ||
1724 | void | |
1725 | free_command_lines (lptr) | |
1726 | struct command_line **lptr; | |
1727 | { | |
1728 | register struct command_line *l = *lptr; | |
1729 | register struct command_line *next; | |
1730 | ||
1731 | while (l) | |
1732 | { | |
1733 | next = l->next; | |
1734 | free (l->line); | |
51b57ded | 1735 | free ((PTR)l); |
bd5635a1 RP |
1736 | l = next; |
1737 | } | |
1738 | } | |
1739 | \f | |
1740 | /* Add an element to the list of info subcommands. */ | |
1741 | ||
1742 | void | |
1743 | add_info (name, fun, doc) | |
1744 | char *name; | |
30875e1c | 1745 | void (*fun) PARAMS ((char *, int)); |
bd5635a1 RP |
1746 | char *doc; |
1747 | { | |
1748 | add_cmd (name, no_class, fun, doc, &infolist); | |
1749 | } | |
1750 | ||
1751 | /* Add an alias to the list of info subcommands. */ | |
1752 | ||
1753 | void | |
1754 | add_info_alias (name, oldname, abbrev_flag) | |
1755 | char *name; | |
1756 | char *oldname; | |
1757 | int abbrev_flag; | |
1758 | { | |
1759 | add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
1760 | } | |
1761 | ||
1762 | /* The "info" command is defined as a prefix, with allow_unknown = 0. | |
1763 | Therefore, its own definition is called only for "info" with no args. */ | |
1764 | ||
1765 | /* ARGSUSED */ | |
1766 | static void | |
1767 | info_command (arg, from_tty) | |
1768 | char *arg; | |
1769 | int from_tty; | |
1770 | { | |
597dc86b | 1771 | printf ("\"info\" must be followed by the name of an info command.\n"); |
bd5635a1 RP |
1772 | help_list (infolist, "info ", -1, stdout); |
1773 | } | |
1774 | ||
1775 | /* The "show" command with no arguments shows all the settings. */ | |
1776 | ||
1777 | /* ARGSUSED */ | |
1778 | static void | |
1779 | show_command (arg, from_tty) | |
1780 | char *arg; | |
1781 | int from_tty; | |
1782 | { | |
1783 | cmd_show_list (showlist, from_tty, ""); | |
1784 | } | |
1785 | \f | |
1786 | /* Add an element to the list of commands. */ | |
1787 | ||
1788 | void | |
1789 | add_com (name, class, fun, doc) | |
1790 | char *name; | |
1791 | enum command_class class; | |
30875e1c | 1792 | void (*fun) PARAMS ((char *, int)); |
bd5635a1 RP |
1793 | char *doc; |
1794 | { | |
1795 | add_cmd (name, class, fun, doc, &cmdlist); | |
1796 | } | |
1797 | ||
1798 | /* Add an alias or abbreviation command to the list of commands. */ | |
1799 | ||
1800 | void | |
1801 | add_com_alias (name, oldname, class, abbrev_flag) | |
1802 | char *name; | |
1803 | char *oldname; | |
1804 | enum command_class class; | |
1805 | int abbrev_flag; | |
1806 | { | |
1807 | add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
1808 | } | |
1809 | ||
1810 | void | |
1811 | error_no_arg (why) | |
1812 | char *why; | |
1813 | { | |
1814 | error ("Argument required (%s).", why); | |
1815 | } | |
1816 | ||
e1ce8aa5 | 1817 | /* ARGSUSED */ |
bd5635a1 RP |
1818 | static void |
1819 | help_command (command, from_tty) | |
1820 | char *command; | |
1821 | int from_tty; /* Ignored */ | |
1822 | { | |
1823 | help_cmd (command, stdout); | |
1824 | } | |
1825 | \f | |
1826 | static void | |
1827 | validate_comname (comname) | |
1828 | char *comname; | |
1829 | { | |
1830 | register char *p; | |
1831 | ||
1832 | if (comname == 0) | |
1833 | error_no_arg ("name of command to define"); | |
1834 | ||
1835 | p = comname; | |
1836 | while (*p) | |
1837 | { | |
c2e4669f | 1838 | if (!isalnum(*p) && *p != '-') |
bd5635a1 RP |
1839 | error ("Junk in argument list: \"%s\"", p); |
1840 | p++; | |
1841 | } | |
1842 | } | |
1843 | ||
51b57ded FF |
1844 | /* This is just a placeholder in the command data structures. */ |
1845 | static void | |
1846 | user_defined_command (ignore, from_tty) | |
1847 | char *ignore; | |
1848 | int from_tty; | |
1849 | { | |
1850 | } | |
1851 | ||
bd5635a1 RP |
1852 | static void |
1853 | define_command (comname, from_tty) | |
1854 | char *comname; | |
1855 | int from_tty; | |
1856 | { | |
1857 | register struct command_line *cmds; | |
fb29d681 | 1858 | register struct cmd_list_element *c, *newc, *hookc = 0; |
bd5635a1 | 1859 | char *tem = comname; |
b5af69c3 JG |
1860 | #define HOOK_STRING "hook-" |
1861 | #define HOOK_LEN 5 | |
bd5635a1 RP |
1862 | |
1863 | validate_comname (comname); | |
1864 | ||
afe4ca15 | 1865 | /* Look it up, and verify that we got an exact match. */ |
bd5635a1 | 1866 | c = lookup_cmd (&tem, cmdlist, "", -1, 1); |
2e4964ad | 1867 | if (c && !STREQ (comname, c->name)) |
afe4ca15 JG |
1868 | c = 0; |
1869 | ||
bd5635a1 RP |
1870 | if (c) |
1871 | { | |
1872 | if (c->class == class_user || c->class == class_alias) | |
1873 | tem = "Redefine command \"%s\"? "; | |
1874 | else | |
1875 | tem = "Really redefine built-in command \"%s\"? "; | |
c2e4669f JG |
1876 | if (!query (tem, c->name)) |
1877 | error ("Command \"%s\" not redefined.", c->name); | |
bd5635a1 RP |
1878 | } |
1879 | ||
b5af69c3 JG |
1880 | /* If this new command is a hook, then mark the command which it |
1881 | is hooking. Note that we allow hooking `help' commands, so that | |
1882 | we can hook the `stop' pseudo-command. */ | |
1883 | ||
1884 | if (!strncmp (comname, HOOK_STRING, HOOK_LEN)) | |
1885 | { | |
1886 | /* Look up cmd it hooks, and verify that we got an exact match. */ | |
1887 | tem = comname+HOOK_LEN; | |
1888 | hookc = lookup_cmd (&tem, cmdlist, "", -1, 0); | |
2e4964ad | 1889 | if (hookc && !STREQ (comname+HOOK_LEN, hookc->name)) |
b5af69c3 JG |
1890 | hookc = 0; |
1891 | if (!hookc) | |
1892 | { | |
1893 | warning ("Your new `%s' command does not hook any existing command.", | |
1894 | comname); | |
1895 | if (!query ("Proceed? ", (char *)0)) | |
1896 | error ("Not confirmed."); | |
1897 | } | |
1898 | } | |
1899 | ||
c2e4669f JG |
1900 | comname = savestring (comname, strlen (comname)); |
1901 | ||
b5af69c3 | 1902 | /* If the rest of the commands will be case insensitive, this one |
c2e4669f JG |
1903 | should behave in the same manner. */ |
1904 | for (tem = comname; *tem; tem++) | |
1905 | if (isupper(*tem)) *tem = tolower(*tem); | |
1906 | ||
bd5635a1 RP |
1907 | if (from_tty) |
1908 | { | |
597dc86b | 1909 | printf ("Type commands for definition of \"%s\".\n\ |
bd5635a1 RP |
1910 | End with a line saying just \"end\".\n", comname); |
1911 | fflush (stdout); | |
1912 | } | |
bd5635a1 RP |
1913 | |
1914 | cmds = read_command_lines (); | |
1915 | ||
1916 | if (c && c->class == class_user) | |
1917 | free_command_lines (&c->user_commands); | |
1918 | ||
51b57ded | 1919 | newc = add_cmd (comname, class_user, user_defined_command, |
bd5635a1 RP |
1920 | (c && c->class == class_user) |
1921 | ? c->doc : savestring ("User-defined.", 13), &cmdlist); | |
1922 | newc->user_commands = cmds; | |
b5af69c3 JG |
1923 | |
1924 | /* If this new command is a hook, then mark both commands as being | |
1925 | tied. */ | |
1926 | if (hookc) | |
1927 | { | |
1928 | hookc->hook = newc; /* Target gets hooked. */ | |
1929 | newc->hookee = hookc; /* We are marked as hooking target cmd. */ | |
1930 | } | |
bd5635a1 RP |
1931 | } |
1932 | ||
1933 | static void | |
1934 | document_command (comname, from_tty) | |
1935 | char *comname; | |
1936 | int from_tty; | |
1937 | { | |
1938 | struct command_line *doclines; | |
1939 | register struct cmd_list_element *c; | |
1940 | char *tem = comname; | |
1941 | ||
1942 | validate_comname (comname); | |
1943 | ||
1944 | c = lookup_cmd (&tem, cmdlist, "", 0, 1); | |
1945 | ||
1946 | if (c->class != class_user) | |
1947 | error ("Command \"%s\" is built-in.", comname); | |
1948 | ||
1949 | if (from_tty) | |
597dc86b | 1950 | printf ("Type documentation for \"%s\".\n\ |
bd5635a1 RP |
1951 | End with a line saying just \"end\".\n", comname); |
1952 | ||
1953 | doclines = read_command_lines (); | |
1954 | ||
1955 | if (c->doc) free (c->doc); | |
1956 | ||
1957 | { | |
1958 | register struct command_line *cl1; | |
1959 | register int len = 0; | |
1960 | ||
1961 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
1962 | len += strlen (cl1->line) + 1; | |
1963 | ||
1964 | c->doc = (char *) xmalloc (len + 1); | |
1965 | *c->doc = 0; | |
1966 | ||
1967 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
1968 | { | |
1969 | strcat (c->doc, cl1->line); | |
1970 | if (cl1->next) | |
1971 | strcat (c->doc, "\n"); | |
1972 | } | |
1973 | } | |
1974 | ||
1975 | free_command_lines (&doclines); | |
1976 | } | |
1977 | \f | |
1978 | static void | |
81066208 | 1979 | print_gnu_advertisement() |
bd5635a1 | 1980 | { |
597dc86b | 1981 | printf ("\ |
bd5635a1 | 1982 | GDB is free software and you are welcome to distribute copies of it\n\ |
afe4ca15 JG |
1983 | under certain conditions; type \"show copying\" to see the conditions.\n\ |
1984 | There is absolutely no warranty for GDB; type \"show warranty\" for details.\n\ | |
81066208 JG |
1985 | "); |
1986 | } | |
1987 | ||
1988 | static void | |
fb29d681 JG |
1989 | print_gdb_version (stream) |
1990 | FILE *stream; | |
81066208 | 1991 | { |
fb29d681 | 1992 | fprintf_filtered (stream, "\ |
57cb418a RP |
1993 | GDB %s (%s", version, host_canonical); |
1994 | ||
1995 | if (strcmp(host_canonical, target_canonical)) | |
1996 | fprintf_filtered (stream, " --target %s", target_canonical); | |
1997 | ||
1998 | fprintf_filtered (stream, "), "); | |
1999 | wrap_here(""); | |
2000 | fprintf_filtered (stream, "Copyright 1993 Free Software Foundation, Inc."); | |
bd5635a1 RP |
2001 | } |
2002 | ||
e1ce8aa5 | 2003 | /* ARGSUSED */ |
bd5635a1 | 2004 | static void |
f266e564 | 2005 | show_version (args, from_tty) |
bd5635a1 RP |
2006 | char *args; |
2007 | int from_tty; | |
2008 | { | |
2009 | immediate_quit++; | |
81066208 | 2010 | print_gnu_advertisement (); |
fb29d681 | 2011 | print_gdb_version (stdout); |
81066208 | 2012 | printf_filtered ("\n"); |
bd5635a1 RP |
2013 | immediate_quit--; |
2014 | } | |
2015 | \f | |
2016 | /* xgdb calls this to reprint the usual GDB prompt. */ | |
2017 | ||
2018 | void | |
2019 | print_prompt () | |
2020 | { | |
597dc86b | 2021 | printf ("%s", prompt); |
bd5635a1 RP |
2022 | fflush (stdout); |
2023 | } | |
2024 | \f | |
2025 | static void | |
2026 | quit_command (args, from_tty) | |
2027 | char *args; | |
2028 | int from_tty; | |
2029 | { | |
f266e564 | 2030 | if (inferior_pid != 0 && target_has_execution) |
bd5635a1 | 2031 | { |
6fe90fc8 | 2032 | if (attach_flag) |
bd5635a1 | 2033 | { |
6fe90fc8 | 2034 | if (query ("The program is running. Quit anyway (and detach it)? ")) |
597dc86b SG |
2035 | target_detach (args, from_tty); |
2036 | else | |
6fe90fc8 | 2037 | error ("Not confirmed."); |
bd5635a1 RP |
2038 | } |
2039 | else | |
6fe90fc8 JK |
2040 | { |
2041 | if (query ("The program is running. Quit anyway (and kill it)? ")) | |
2042 | target_kill (); | |
2043 | else | |
2044 | error ("Not confirmed."); | |
2045 | } | |
bd5635a1 RP |
2046 | } |
2047 | /* Save the history information if it is appropriate to do so. */ | |
2048 | if (write_history_p && history_filename) | |
2049 | write_history (history_filename); | |
2050 | exit (0); | |
2051 | } | |
2052 | ||
ee0613d1 JG |
2053 | /* Returns whether GDB is running on a terminal and whether the user |
2054 | desires that questions be asked of them on that terminal. */ | |
2055 | ||
bd5635a1 RP |
2056 | int |
2057 | input_from_terminal_p () | |
2058 | { | |
ee0613d1 | 2059 | return gdb_has_a_terminal && (instream == stdin) & caution; |
bd5635a1 RP |
2060 | } |
2061 | \f | |
e1ce8aa5 | 2062 | /* ARGSUSED */ |
bd5635a1 RP |
2063 | static void |
2064 | pwd_command (args, from_tty) | |
2065 | char *args; | |
2066 | int from_tty; | |
2067 | { | |
2068 | if (args) error ("The \"pwd\" command does not take an argument: %s", args); | |
f7402c04 | 2069 | getcwd (dirbuf, sizeof (dirbuf)); |
bd5635a1 | 2070 | |
2e4964ad | 2071 | if (!STREQ (dirbuf, current_directory)) |
597dc86b | 2072 | printf ("Working directory %s\n (canonically %s).\n", |
bd5635a1 RP |
2073 | current_directory, dirbuf); |
2074 | else | |
597dc86b | 2075 | printf ("Working directory %s.\n", current_directory); |
bd5635a1 RP |
2076 | } |
2077 | ||
2078 | static void | |
2079 | cd_command (dir, from_tty) | |
2080 | char *dir; | |
2081 | int from_tty; | |
2082 | { | |
2083 | int len; | |
2084 | int change; | |
2085 | ||
9107291d JK |
2086 | /* If the new directory is absolute, repeat is a no-op; if relative, |
2087 | repeat might be useful but is more likely to be a mistake. */ | |
2088 | dont_repeat (); | |
2089 | ||
bd5635a1 RP |
2090 | if (dir == 0) |
2091 | error_no_arg ("new working directory"); | |
2092 | ||
2093 | dir = tilde_expand (dir); | |
2094 | make_cleanup (free, dir); | |
2095 | ||
ee0613d1 JG |
2096 | if (chdir (dir) < 0) |
2097 | perror_with_name (dir); | |
2098 | ||
bd5635a1 RP |
2099 | len = strlen (dir); |
2100 | dir = savestring (dir, len - (len > 1 && dir[len-1] == '/')); | |
2101 | if (dir[0] == '/') | |
2102 | current_directory = dir; | |
2103 | else | |
2104 | { | |
7d9884b9 | 2105 | current_directory = concat (current_directory, "/", dir, NULL); |
bd5635a1 RP |
2106 | free (dir); |
2107 | } | |
2108 | ||
2109 | /* Now simplify any occurrences of `.' and `..' in the pathname. */ | |
2110 | ||
2111 | change = 1; | |
2112 | while (change) | |
2113 | { | |
2114 | char *p; | |
2115 | change = 0; | |
2116 | ||
2117 | for (p = current_directory; *p;) | |
2118 | { | |
2119 | if (!strncmp (p, "/./", 2) | |
2120 | && (p[2] == 0 || p[2] == '/')) | |
2121 | strcpy (p, p + 2); | |
2122 | else if (!strncmp (p, "/..", 3) | |
2123 | && (p[3] == 0 || p[3] == '/') | |
2124 | && p != current_directory) | |
2125 | { | |
2126 | char *q = p; | |
2127 | while (q != current_directory && q[-1] != '/') q--; | |
2128 | if (q != current_directory) | |
2129 | { | |
2130 | strcpy (q-1, p+3); | |
2131 | p = q-1; | |
2132 | } | |
2133 | } | |
2134 | else p++; | |
2135 | } | |
2136 | } | |
2137 | ||
bd5635a1 RP |
2138 | forget_cached_source_info (); |
2139 | ||
2140 | if (from_tty) | |
2141 | pwd_command ((char *) 0, 1); | |
2142 | } | |
2143 | \f | |
e1ce8aa5 | 2144 | /* ARGSUSED */ |
bd5635a1 RP |
2145 | static void |
2146 | source_command (args, from_tty) | |
2147 | char *args; | |
2148 | int from_tty; | |
2149 | { | |
2150 | FILE *stream; | |
2151 | struct cleanup *cleanups; | |
2152 | char *file = args; | |
2153 | ||
6fe90fc8 JK |
2154 | if (file == NULL) |
2155 | { | |
2156 | error ("source command requires pathname of file to source."); | |
2157 | } | |
bd5635a1 RP |
2158 | |
2159 | file = tilde_expand (file); | |
2160 | make_cleanup (free, file); | |
2161 | ||
6fe90fc8 | 2162 | stream = fopen (file, FOPEN_RT); |
bd5635a1 RP |
2163 | if (stream == 0) |
2164 | perror_with_name (file); | |
2165 | ||
2166 | cleanups = make_cleanup (fclose, stream); | |
2167 | ||
2168 | read_command_file (stream); | |
2169 | ||
2170 | do_cleanups (cleanups); | |
2171 | } | |
2172 | ||
2173 | /* ARGSUSED */ | |
2174 | static void | |
2175 | echo_command (text, from_tty) | |
2176 | char *text; | |
2177 | int from_tty; | |
2178 | { | |
2179 | char *p = text; | |
2180 | register int c; | |
2181 | ||
2182 | if (text) | |
a8a69e63 | 2183 | while ((c = *p++) != '\0') |
bd5635a1 RP |
2184 | { |
2185 | if (c == '\\') | |
2186 | { | |
2187 | /* \ at end of argument is used after spaces | |
2188 | so they won't be lost. */ | |
2189 | if (*p == 0) | |
2190 | return; | |
2191 | ||
2192 | c = parse_escape (&p); | |
2193 | if (c >= 0) | |
afe4ca15 | 2194 | printf_filtered ("%c", c); |
bd5635a1 RP |
2195 | } |
2196 | else | |
afe4ca15 | 2197 | printf_filtered ("%c", c); |
bd5635a1 | 2198 | } |
afe4ca15 JG |
2199 | |
2200 | /* Force this output to appear now. */ | |
2201 | wrap_here (""); | |
f266e564 | 2202 | fflush (stdout); |
bd5635a1 RP |
2203 | } |
2204 | ||
bd5635a1 RP |
2205 | \f |
2206 | /* Functions to manipulate command line editing control variables. */ | |
2207 | ||
f266e564 | 2208 | /* Number of commands to print in each call to show_commands. */ |
bd5635a1 RP |
2209 | #define Hist_print 10 |
2210 | static void | |
f266e564 | 2211 | show_commands (args, from_tty) |
bd5635a1 RP |
2212 | char *args; |
2213 | int from_tty; | |
2214 | { | |
2215 | /* Index for history commands. Relative to history_base. */ | |
2216 | int offset; | |
2217 | ||
2218 | /* Number of the history entry which we are planning to display next. | |
2219 | Relative to history_base. */ | |
2220 | static int num = 0; | |
2221 | ||
2222 | /* The first command in the history which doesn't exist (i.e. one more | |
2223 | than the number of the last command). Relative to history_base. */ | |
2224 | int hist_len; | |
2225 | ||
30875e1c | 2226 | extern struct _hist_entry *history_get PARAMS ((int)); |
bd5635a1 RP |
2227 | extern int history_base; |
2228 | ||
bd5635a1 RP |
2229 | /* Print out some of the commands from the command history. */ |
2230 | /* First determine the length of the history list. */ | |
2231 | hist_len = history_size; | |
2232 | for (offset = 0; offset < history_size; offset++) | |
2233 | { | |
2234 | if (!history_get (history_base + offset)) | |
2235 | { | |
2236 | hist_len = offset; | |
2237 | break; | |
2238 | } | |
2239 | } | |
2240 | ||
2241 | if (args) | |
2242 | { | |
2243 | if (args[0] == '+' && args[1] == '\0') | |
2244 | /* "info editing +" should print from the stored position. */ | |
2245 | ; | |
2246 | else | |
2247 | /* "info editing <exp>" should print around command number <exp>. */ | |
2248 | num = (parse_and_eval_address (args) - history_base) - Hist_print / 2; | |
2249 | } | |
ee0613d1 | 2250 | /* "show commands" means print the last Hist_print commands. */ |
bd5635a1 RP |
2251 | else |
2252 | { | |
2253 | num = hist_len - Hist_print; | |
2254 | } | |
2255 | ||
2256 | if (num < 0) | |
2257 | num = 0; | |
2258 | ||
2259 | /* If there are at least Hist_print commands, we want to display the last | |
2260 | Hist_print rather than, say, the last 6. */ | |
2261 | if (hist_len - num < Hist_print) | |
2262 | { | |
2263 | num = hist_len - Hist_print; | |
2264 | if (num < 0) | |
2265 | num = 0; | |
2266 | } | |
2267 | ||
bd5635a1 RP |
2268 | for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) |
2269 | { | |
2270 | printf_filtered ("%5d %s\n", history_base + offset, | |
2271 | (history_get (history_base + offset))->line); | |
2272 | } | |
2273 | ||
2274 | /* The next command we want to display is the next one that we haven't | |
2275 | displayed yet. */ | |
2276 | num += Hist_print; | |
2277 | ||
2278 | /* If the user repeats this command with return, it should do what | |
ee0613d1 JG |
2279 | "show commands +" does. This is unnecessary if arg is null, |
2280 | because "show commands +" is not useful after "show commands". */ | |
bd5635a1 RP |
2281 | if (from_tty && args) |
2282 | { | |
2283 | args[0] = '+'; | |
2284 | args[1] = '\0'; | |
2285 | } | |
2286 | } | |
2287 | ||
2288 | /* Called by do_setshow_command. */ | |
e1ce8aa5 | 2289 | /* ARGSUSED */ |
bd5635a1 RP |
2290 | static void |
2291 | set_history_size_command (args, from_tty, c) | |
2292 | char *args; | |
2293 | int from_tty; | |
2294 | struct cmd_list_element *c; | |
2295 | { | |
6fe90fc8 | 2296 | if (history_size == INT_MAX) |
bd5635a1 | 2297 | unstifle_history (); |
c2e4669f | 2298 | else if (history_size >= 0) |
bd5635a1 | 2299 | stifle_history (history_size); |
c2e4669f JG |
2300 | else |
2301 | { | |
6fe90fc8 | 2302 | history_size = INT_MAX; |
c2e4669f JG |
2303 | error ("History size must be non-negative"); |
2304 | } | |
bd5635a1 RP |
2305 | } |
2306 | ||
e1ce8aa5 | 2307 | /* ARGSUSED */ |
bd5635a1 RP |
2308 | static void |
2309 | set_history (args, from_tty) | |
2310 | char *args; | |
2311 | int from_tty; | |
2312 | { | |
597dc86b | 2313 | printf ("\"set history\" must be followed by the name of a history subcommand.\n"); |
bd5635a1 RP |
2314 | help_list (sethistlist, "set history ", -1, stdout); |
2315 | } | |
2316 | ||
e1ce8aa5 | 2317 | /* ARGSUSED */ |
bd5635a1 RP |
2318 | static void |
2319 | show_history (args, from_tty) | |
2320 | char *args; | |
2321 | int from_tty; | |
2322 | { | |
f266e564 | 2323 | cmd_show_list (showhistlist, from_tty, ""); |
bd5635a1 RP |
2324 | } |
2325 | ||
2326 | int info_verbose = 0; /* Default verbose msgs off */ | |
2327 | ||
2328 | /* Called by do_setshow_command. An elaborate joke. */ | |
e1ce8aa5 | 2329 | /* ARGSUSED */ |
bd5635a1 RP |
2330 | static void |
2331 | set_verbose (args, from_tty, c) | |
2332 | char *args; | |
2333 | int from_tty; | |
2334 | struct cmd_list_element *c; | |
2335 | { | |
2336 | char *cmdname = "verbose"; | |
2337 | struct cmd_list_element *showcmd; | |
2338 | ||
2339 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
2340 | ||
2341 | if (info_verbose) | |
2342 | { | |
2343 | c->doc = "Set verbose printing of informational messages."; | |
2344 | showcmd->doc = "Show verbose printing of informational messages."; | |
2345 | } | |
2346 | else | |
2347 | { | |
2348 | c->doc = "Set verbosity."; | |
2349 | showcmd->doc = "Show verbosity."; | |
2350 | } | |
2351 | } | |
2352 | ||
2353 | static void | |
30875e1c SG |
2354 | float_handler (signo) |
2355 | int signo; | |
bd5635a1 RP |
2356 | { |
2357 | /* This message is based on ANSI C, section 4.7. Note that integer | |
2358 | divide by zero causes this, so "float" is a misnomer. */ | |
76a0ffb4 | 2359 | signal (SIGFPE, float_handler); |
bd5635a1 RP |
2360 | error ("Erroneous arithmetic operation."); |
2361 | } | |
2362 | ||
2363 | /* Return whether we are running a batch file or from terminal. */ | |
2364 | int | |
2365 | batch_mode () | |
2366 | { | |
2367 | return !(instream == stdin && ISATTY (stdin)); | |
2368 | } | |
2369 | ||
2370 | \f | |
2371 | static void | |
2372 | initialize_cmd_lists () | |
2373 | { | |
0239d9b3 FF |
2374 | cmdlist = NULL; |
2375 | infolist = NULL; | |
2376 | enablelist = NULL; | |
2377 | disablelist = NULL; | |
2378 | deletelist = NULL; | |
2379 | enablebreaklist = NULL; | |
2380 | setlist = NULL; | |
2381 | unsetlist = NULL; | |
bd5635a1 | 2382 | showlist = NULL; |
0239d9b3 | 2383 | sethistlist = NULL; |
bd5635a1 | 2384 | showhistlist = NULL; |
0239d9b3 FF |
2385 | unsethistlist = NULL; |
2386 | #if MAINTENANCE_CMDS | |
2387 | maintenancelist = NULL; | |
2388 | maintenanceinfolist = NULL; | |
a8e033f2 | 2389 | maintenanceprintlist = NULL; |
0239d9b3 FF |
2390 | #endif |
2391 | setprintlist = NULL; | |
2392 | showprintlist = NULL; | |
2393 | setchecklist = NULL; | |
2394 | showchecklist = NULL; | |
bd5635a1 RP |
2395 | } |
2396 | ||
8b3c897a SG |
2397 | /* Init the history buffer. Note that we are called after the init file(s) |
2398 | * have been read so that the user can change the history file via his | |
2399 | * .gdbinit file (for instance). The GDBHISTFILE environment variable | |
2400 | * overrides all of this. | |
2401 | */ | |
2402 | ||
bd5635a1 | 2403 | static void |
8b3c897a | 2404 | initialize_history() |
bd5635a1 | 2405 | { |
bd5635a1 | 2406 | char *tmpenv; |
bd5635a1 | 2407 | |
318bf84f FF |
2408 | tmpenv = getenv ("HISTSIZE"); |
2409 | if (tmpenv) | |
bd5635a1 | 2410 | history_size = atoi (tmpenv); |
8b3c897a | 2411 | else if (!history_size) |
bd5635a1 RP |
2412 | history_size = 256; |
2413 | ||
2414 | stifle_history (history_size); | |
2415 | ||
318bf84f FF |
2416 | tmpenv = getenv ("GDBHISTFILE"); |
2417 | if (tmpenv) | |
bd5635a1 | 2418 | history_filename = savestring (tmpenv, strlen(tmpenv)); |
8b3c897a | 2419 | else if (!history_filename) { |
bd5635a1 RP |
2420 | /* We include the current directory so that if the user changes |
2421 | directories the file written will be the same as the one | |
2422 | that was read. */ | |
7d9884b9 | 2423 | history_filename = concat (current_directory, "/.gdb_history", NULL); |
8b3c897a | 2424 | } |
bd5635a1 | 2425 | read_history (history_filename); |
8b3c897a | 2426 | } |
bd5635a1 | 2427 | |
8b3c897a SG |
2428 | static void |
2429 | initialize_main () | |
2430 | { | |
2431 | struct cmd_list_element *c; | |
2432 | ||
2433 | #ifdef DEFAULT_PROMPT | |
2434 | prompt = savestring (DEFAULT_PROMPT, strlen(DEFAULT_PROMPT)); | |
2435 | #else | |
2436 | prompt = savestring ("(gdb) ", 6); | |
2437 | #endif | |
2438 | ||
2439 | /* Set the important stuff up for command editing. */ | |
2440 | command_editing_p = 1; | |
2441 | history_expansion_p = 0; | |
2442 | write_history_p = 0; | |
2443 | ||
bd5635a1 RP |
2444 | /* Setup important stuff for command line editing. */ |
2445 | rl_completion_entry_function = (int (*)()) symbol_completion_function; | |
2446 | rl_completer_word_break_characters = gdb_completer_word_break_characters; | |
51b57ded | 2447 | rl_completer_quote_characters = gdb_completer_quote_characters; |
bd5635a1 RP |
2448 | rl_readline_name = "gdb"; |
2449 | ||
2450 | /* Define the classes of commands. | |
2451 | They will appear in the help list in the reverse of this order. */ | |
2452 | ||
0239d9b3 FF |
2453 | add_cmd ("internals", class_maintenance, NO_FUNCTION, |
2454 | "Maintenance commands.\n\ | |
2455 | Some gdb commands are provided just for use by gdb maintainers.\n\ | |
2456 | These commands are subject to frequent change, and may not be as\n\ | |
2457 | well documented as user commands.", | |
2458 | &cmdlist); | |
bd5635a1 RP |
2459 | add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist); |
2460 | add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist); | |
2461 | add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\ | |
2462 | The commands in this class are those defined by the user.\n\ | |
2463 | Use the \"define\" command to define a command.", &cmdlist); | |
2464 | add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist); | |
2465 | add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist); | |
2466 | add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist); | |
2467 | add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist); | |
2468 | add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist); | |
2469 | add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\ | |
2470 | The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\ | |
2471 | counting from zero for the innermost (currently executing) frame.\n\n\ | |
2472 | At any time gdb identifies one frame as the \"selected\" frame.\n\ | |
2473 | Variable lookups are done with respect to the selected frame.\n\ | |
2474 | When the program being debugged stops, gdb selects the innermost frame.\n\ | |
2475 | The commands below can be used to select other frames by number or address.", | |
2476 | &cmdlist); | |
2477 | add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist); | |
2478 | ||
2479 | add_com ("pwd", class_files, pwd_command, | |
2480 | "Print working directory. This is used for your program as well."); | |
2481 | add_com ("cd", class_files, cd_command, | |
2482 | "Set working directory to DIR for debugger and program being debugged.\n\ | |
2483 | The change does not take effect for the program being debugged\n\ | |
2484 | until the next time it is started."); | |
2485 | ||
2486 | add_show_from_set | |
2487 | (add_set_cmd ("prompt", class_support, var_string, (char *)&prompt, | |
2488 | "Set gdb's prompt", | |
2489 | &setlist), | |
2490 | &showlist); | |
2491 | ||
2492 | add_com ("echo", class_support, echo_command, | |
2493 | "Print a constant string. Give string as argument.\n\ | |
2494 | C escape sequences may be used in the argument.\n\ | |
2495 | No newline is added at the end of the argument;\n\ | |
2496 | use \"\\n\" if you want a newline to be printed.\n\ | |
2497 | Since leading and trailing whitespace are ignored in command arguments,\n\ | |
2498 | if you want to print some you must use \"\\\" before leading whitespace\n\ | |
2499 | to be printed or after trailing whitespace."); | |
2500 | add_com ("document", class_support, document_command, | |
2501 | "Document a user-defined command.\n\ | |
2502 | Give command name as argument. Give documentation on following lines.\n\ | |
2503 | End with a line of just \"end\"."); | |
2504 | add_com ("define", class_support, define_command, | |
2505 | "Define a new command name. Command name is argument.\n\ | |
2506 | Definition appears on following lines, one command per line.\n\ | |
2507 | End with a line of just \"end\".\n\ | |
2508 | Use the \"document\" command to give documentation for the new command.\n\ | |
2509 | Commands defined in this way do not take arguments."); | |
2510 | ||
2511 | #ifdef __STDC__ | |
2512 | add_com ("source", class_support, source_command, | |
2513 | "Read commands from a file named FILE.\n\ | |
2514 | Note that the file \"" GDBINIT_FILENAME "\" is read automatically in this way\n\ | |
2515 | when gdb is started."); | |
2516 | #else | |
2517 | /* Punt file name, we can't help it easily. */ | |
2518 | add_com ("source", class_support, source_command, | |
2519 | "Read commands from a file named FILE.\n\ | |
2520 | Note that the file \".gdbinit\" is read automatically in this way\n\ | |
2521 | when gdb is started."); | |
2522 | #endif | |
2523 | ||
2524 | add_com ("quit", class_support, quit_command, "Exit gdb."); | |
2525 | add_com ("help", class_support, help_command, "Print list of commands."); | |
2526 | add_com_alias ("q", "quit", class_support, 1); | |
2527 | add_com_alias ("h", "help", class_support, 1); | |
2528 | ||
2529 | ||
2530 | c = add_set_cmd ("verbose", class_support, var_boolean, (char *)&info_verbose, | |
2531 | "Set ", | |
2532 | &setlist), | |
2533 | add_show_from_set (c, &showlist); | |
30875e1c | 2534 | c->function.sfunc = set_verbose; |
bd5635a1 RP |
2535 | set_verbose (NULL, 0, c); |
2536 | ||
bd5635a1 RP |
2537 | add_show_from_set |
2538 | (add_set_cmd ("editing", class_support, var_boolean, (char *)&command_editing_p, | |
ee0613d1 | 2539 | "Set editing of command lines as they are typed.\n\ |
bd5635a1 | 2540 | Use \"on\" to enable to enable the editing, and \"off\" to disable it.\n\ |
ee0613d1 JG |
2541 | Without an argument, command line editing is enabled. To edit, use\n\ |
2542 | EMACS-like or VI-like commands like control-P or ESC.", &setlist), | |
bd5635a1 RP |
2543 | &showlist); |
2544 | ||
2545 | add_prefix_cmd ("history", class_support, set_history, | |
2546 | "Generic command for setting command history parameters.", | |
2547 | &sethistlist, "set history ", 0, &setlist); | |
2548 | add_prefix_cmd ("history", class_support, show_history, | |
2549 | "Generic command for showing command history parameters.", | |
2550 | &showhistlist, "show history ", 0, &showlist); | |
2551 | ||
2552 | add_show_from_set | |
2553 | (add_set_cmd ("expansion", no_class, var_boolean, (char *)&history_expansion_p, | |
2554 | "Set history expansion on command input.\n\ | |
2555 | Without an argument, history expansion is enabled.", &sethistlist), | |
2556 | &showhistlist); | |
2557 | ||
2558 | add_show_from_set | |
f266e564 | 2559 | (add_set_cmd ("save", no_class, var_boolean, (char *)&write_history_p, |
bd5635a1 RP |
2560 | "Set saving of the history record on exit.\n\ |
2561 | Use \"on\" to enable to enable the saving, and \"off\" to disable it.\n\ | |
2562 | Without an argument, saving is enabled.", &sethistlist), | |
2563 | &showhistlist); | |
2564 | ||
6fe90fc8 | 2565 | c = add_set_cmd ("size", no_class, var_integer, (char *)&history_size, |
bd5635a1 RP |
2566 | "Set the size of the command history, \n\ |
2567 | ie. the number of previous commands to keep a record of.", &sethistlist); | |
2568 | add_show_from_set (c, &showhistlist); | |
30875e1c | 2569 | c->function.sfunc = set_history_size_command; |
bd5635a1 RP |
2570 | |
2571 | add_show_from_set | |
2572 | (add_set_cmd ("filename", no_class, var_filename, (char *)&history_filename, | |
2573 | "Set the filename in which to record the command history\n\ | |
2574 | (the list of previous commands of which a record is kept).", &sethistlist), | |
2575 | &showhistlist); | |
2576 | ||
2577 | add_show_from_set | |
f266e564 | 2578 | (add_set_cmd ("confirm", class_support, var_boolean, |
bd5635a1 | 2579 | (char *)&caution, |
f266e564 JK |
2580 | "Set whether to confirm potentially dangerous operations.", |
2581 | &setlist), | |
bd5635a1 RP |
2582 | &showlist); |
2583 | ||
2584 | add_prefix_cmd ("info", class_info, info_command, | |
ee0613d1 | 2585 | "Generic command for showing things about the program being debugged.", |
bd5635a1 RP |
2586 | &infolist, "info ", 0, &cmdlist); |
2587 | add_com_alias ("i", "info", class_info, 1); | |
2588 | ||
2589 | add_prefix_cmd ("show", class_info, show_command, | |
ee0613d1 | 2590 | "Generic command for showing things about the debugger.", |
bd5635a1 RP |
2591 | &showlist, "show ", 0, &cmdlist); |
2592 | /* Another way to get at the same thing. */ | |
2593 | add_info ("set", show_command, "Show all GDB settings."); | |
2594 | ||
ee0613d1 JG |
2595 | add_cmd ("commands", no_class, show_commands, |
2596 | "Show the the history of commands you typed.\n\ | |
2597 | You can supply a command number to start with, or a `+' to start after\n\ | |
2598 | the previous command number shown.", | |
f266e564 | 2599 | &showlist); |
bd5635a1 | 2600 | |
f266e564 | 2601 | add_cmd ("version", no_class, show_version, |
ee0613d1 | 2602 | "Show what version of GDB this is.", &showlist); |
bd5635a1 | 2603 | } |