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" |
d0d8484a | 32 | #include "terminal.h" /* For job_control. */ |
bd5635a1 | 33 | |
e522fb52 JG |
34 | #include "getopt.h" |
35 | ||
36 | /* readline include files */ | |
37 | #include "readline.h" | |
38 | #include "history.h" | |
bd5635a1 RP |
39 | |
40 | /* readline defines this. */ | |
41 | #undef savestring | |
42 | ||
43 | #ifdef USG | |
44 | #include <sys/types.h> | |
45 | #include <unistd.h> | |
46 | #endif | |
47 | ||
48 | #include <string.h> | |
ee0613d1 | 49 | #ifndef NO_SYS_FILE |
bd5635a1 | 50 | #include <sys/file.h> |
ee0613d1 | 51 | #endif |
bd5635a1 RP |
52 | #include <setjmp.h> |
53 | #include <sys/param.h> | |
54 | #include <sys/stat.h> | |
e522fb52 | 55 | #include <ctype.h> |
bd5635a1 RP |
56 | |
57 | #ifdef SET_STACK_LIMIT_HUGE | |
58 | #include <sys/time.h> | |
59 | #include <sys/resource.h> | |
bd5635a1 RP |
60 | |
61 | int original_stack_limit; | |
62 | #endif | |
63 | ||
30875e1c SG |
64 | /* Prototypes for local functions */ |
65 | ||
66 | static char * | |
67 | symbol_completion_function PARAMS ((char *, int)); | |
68 | ||
69 | static void | |
70 | command_loop PARAMS ((void)); | |
71 | ||
72 | static void | |
73 | command_loop_marker PARAMS ((int)); | |
74 | ||
75 | static void | |
fb29d681 | 76 | print_gdb_version PARAMS ((FILE *)); |
30875e1c SG |
77 | |
78 | static void | |
79 | quit_command PARAMS ((char *, int)); | |
80 | ||
81 | static void | |
fc61e9ee | 82 | init_main PARAMS ((void)); |
30875e1c SG |
83 | |
84 | static void | |
fc61e9ee | 85 | init_history PARAMS ((void)); |
30875e1c SG |
86 | |
87 | static void | |
fc61e9ee | 88 | init_cmd_lists PARAMS ((void)); |
30875e1c SG |
89 | |
90 | static void | |
91 | float_handler PARAMS ((int)); | |
92 | ||
93 | static void | |
94 | source_command PARAMS ((char *, int)); | |
95 | ||
c307bb11 | 96 | static void cd_command PARAMS ((char *, int)); |
30875e1c SG |
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 | ||
bd5635a1 RP |
199 | /* Flag for whether we want all the "from_tty" gubbish printed. */ |
200 | ||
201 | int caution = 1; /* Default is yes, sigh. */ | |
202 | ||
203 | /* | |
204 | * Define all cmd_list_element's | |
205 | */ | |
206 | ||
207 | /* Chain containing all defined commands. */ | |
208 | ||
209 | struct cmd_list_element *cmdlist; | |
210 | ||
211 | /* Chain containing all defined info subcommands. */ | |
212 | ||
213 | struct cmd_list_element *infolist; | |
214 | ||
215 | /* Chain containing all defined enable subcommands. */ | |
216 | ||
217 | struct cmd_list_element *enablelist; | |
218 | ||
219 | /* Chain containing all defined disable subcommands. */ | |
220 | ||
221 | struct cmd_list_element *disablelist; | |
222 | ||
223 | /* Chain containing all defined delete subcommands. */ | |
224 | ||
225 | struct cmd_list_element *deletelist; | |
226 | ||
227 | /* Chain containing all defined "enable breakpoint" subcommands. */ | |
228 | ||
229 | struct cmd_list_element *enablebreaklist; | |
230 | ||
231 | /* Chain containing all defined set subcommands */ | |
232 | ||
233 | struct cmd_list_element *setlist; | |
234 | ||
0239d9b3 FF |
235 | /* Chain containing all defined unset subcommands */ |
236 | ||
237 | struct cmd_list_element *unsetlist; | |
238 | ||
bd5635a1 | 239 | /* Chain containing all defined show subcommands. */ |
0239d9b3 | 240 | |
bd5635a1 RP |
241 | struct cmd_list_element *showlist; |
242 | ||
243 | /* Chain containing all defined \"set history\". */ | |
244 | ||
245 | struct cmd_list_element *sethistlist; | |
246 | ||
247 | /* Chain containing all defined \"show history\". */ | |
0239d9b3 | 248 | |
bd5635a1 RP |
249 | struct cmd_list_element *showhistlist; |
250 | ||
251 | /* Chain containing all defined \"unset history\". */ | |
252 | ||
253 | struct cmd_list_element *unsethistlist; | |
254 | ||
0239d9b3 FF |
255 | /* Chain containing all defined maintenance subcommands. */ |
256 | ||
257 | #if MAINTENANCE_CMDS | |
258 | struct cmd_list_element *maintenancelist; | |
259 | #endif | |
260 | ||
261 | /* Chain containing all defined "maintenance info" subcommands. */ | |
262 | ||
263 | #if MAINTENANCE_CMDS | |
264 | struct cmd_list_element *maintenanceinfolist; | |
265 | #endif | |
266 | ||
a8e033f2 SG |
267 | /* Chain containing all defined "maintenance print" subcommands. */ |
268 | ||
269 | #if MAINTENANCE_CMDS | |
270 | struct cmd_list_element *maintenanceprintlist; | |
271 | #endif | |
272 | ||
0239d9b3 FF |
273 | struct cmd_list_element *setprintlist; |
274 | ||
275 | struct cmd_list_element *showprintlist; | |
276 | ||
277 | struct cmd_list_element *setchecklist; | |
278 | ||
279 | struct cmd_list_element *showchecklist; | |
280 | ||
d0d8484a SG |
281 | /* stdio stream that command input is being read from. Set to stdin normally. |
282 | Set by source_command to the file we are sourcing. Set to NULL if we are | |
283 | executing a user-defined command. */ | |
bd5635a1 RP |
284 | |
285 | FILE *instream; | |
286 | ||
287 | /* Current working directory. */ | |
288 | ||
289 | char *current_directory; | |
290 | ||
291 | /* The directory name is actually stored here (usually). */ | |
f7402c04 | 292 | static char dirbuf[1024]; |
bd5635a1 RP |
293 | |
294 | /* Function to call before reading a command, if nonzero. | |
295 | The function receives two args: an input stream, | |
296 | and a prompt string. */ | |
bd099407 | 297 | |
30875e1c | 298 | void (*window_hook) PARAMS ((FILE *, char *)); |
bd5635a1 | 299 | |
318bf84f FF |
300 | extern int mapped_symbol_files; |
301 | extern int readnow_symbol_files; | |
302 | ||
bd5635a1 RP |
303 | int epoch_interface; |
304 | int xgdb_verbose; | |
305 | ||
bd5635a1 RP |
306 | /* gdb prints this when reading a command interactively */ |
307 | static char *prompt; | |
308 | ||
309 | /* Buffer used for reading command lines, and the size | |
310 | allocated for it so far. */ | |
311 | ||
312 | char *line; | |
313 | int linesize = 100; | |
314 | ||
315 | /* Baud rate specified for talking to serial target systems. Default | |
d0d8484a | 316 | is left as -1, so targets can choose their own defaults. */ |
bd5635a1 | 317 | |
d0d8484a SG |
318 | int baud_rate = -1; |
319 | ||
320 | /* Non-zero tells remote* modules to output debugging info. */ | |
321 | ||
322 | int remote_debug = 0; | |
bd5635a1 RP |
323 | |
324 | /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */ | |
325 | ||
326 | #ifndef STOP_SIGNAL | |
327 | #ifdef SIGTSTP | |
328 | #define STOP_SIGNAL SIGTSTP | |
30875e1c | 329 | static void stop_sig PARAMS ((int)); |
bd5635a1 RP |
330 | #endif |
331 | #endif | |
d566d62a JK |
332 | |
333 | /* Some System V have job control but not sigsetmask(). */ | |
334 | #if !defined (HAVE_SIGSETMASK) | |
335 | #define HAVE_SIGSETMASK !defined (USG) | |
336 | #endif | |
337 | ||
8b3c897a | 338 | #if 0 == (HAVE_SIGSETMASK) |
d566d62a JK |
339 | #define sigsetmask(n) |
340 | #endif | |
bd5635a1 | 341 | \f |
9748446f JK |
342 | /* Where to go for return_to_top_level (RETURN_ERROR). */ |
343 | static jmp_buf error_return; | |
344 | /* Where to go for return_to_top_level (RETURN_QUIT). */ | |
345 | static jmp_buf quit_return; | |
bd5635a1 | 346 | |
9748446f JK |
347 | /* Temporary variable for SET_TOP_LEVEL. */ |
348 | static int top_level_val; | |
349 | ||
350 | /* Do a setjmp on error_return and quit_return. catch_errors is | |
351 | generally a cleaner way to do this, but main() would look pretty | |
352 | ugly if it had to use catch_errors each time. */ | |
353 | ||
354 | #define SET_TOP_LEVEL() \ | |
355 | (((top_level_val = setjmp (error_return)) \ | |
356 | ? (PTR) 0 : (PTR) memcpy (quit_return, error_return, sizeof (jmp_buf))) \ | |
357 | , top_level_val) | |
358 | ||
359 | /* Return for reason REASON. This generally gets back to the command | |
360 | loop, but can be caught via catch_errors. */ | |
bd5635a1 | 361 | |
30875e1c | 362 | NORETURN void |
9748446f JK |
363 | return_to_top_level (reason) |
364 | enum return_reason reason; | |
bd5635a1 RP |
365 | { |
366 | quit_flag = 0; | |
367 | immediate_quit = 0; | |
c307bb11 JK |
368 | |
369 | /* Perhaps it would be cleaner to do this via the cleanup chain (not sure | |
370 | I can think of a reason why that is vital, though). */ | |
bd5635a1 | 371 | bpstat_clear_actions(stop_bpstat); /* Clear queued breakpoint commands */ |
c307bb11 | 372 | |
bd5635a1 | 373 | disable_current_display (); |
f266e564 | 374 | do_cleanups (ALL_CLEANUPS); |
9748446f JK |
375 | (NORETURN void) longjmp |
376 | (reason == RETURN_ERROR ? error_return : quit_return, 1); | |
bd5635a1 RP |
377 | } |
378 | ||
9748446f JK |
379 | /* Call FUNC with arg ARGS, catching any errors. If there is no |
380 | error, return the value returned by FUNC. If there is an error, | |
381 | print ERRSTRING, print the specific error message, then return | |
382 | zero. | |
383 | ||
d0d8484a SG |
384 | Must not be called with immediate_quit in effect (bad things might |
385 | happen, say we got a signal in the middle of a memcpy to quit_return). | |
386 | This is an OK restriction; with very few exceptions immediate_quit can | |
387 | be replaced by judicious use of QUIT. | |
388 | ||
9748446f JK |
389 | MASK specifies what to catch; it is normally set to |
390 | RETURN_MASK_ALL, if for no other reason than that the code which | |
391 | calls catch_errors might not be set up to deal with a quit which | |
392 | isn't caught. But if the code can deal with it, it generally | |
393 | should be RETURN_MASK_ERROR, unless for some reason it is more | |
394 | useful to abort only the portion of the operation inside the | |
395 | catch_errors. Note that quit should return to the command line | |
396 | fairly quickly, even if some further processing is being done. */ | |
bd5635a1 RP |
397 | |
398 | int | |
9748446f | 399 | catch_errors (func, args, errstring, mask) |
30875e1c | 400 | int (*func) PARAMS ((char *)); |
9748446f | 401 | PTR args; |
bd5635a1 | 402 | char *errstring; |
9748446f | 403 | return_mask mask; |
bd5635a1 | 404 | { |
9748446f JK |
405 | jmp_buf saved_error; |
406 | jmp_buf saved_quit; | |
407 | jmp_buf tmp_jmp; | |
bd5635a1 RP |
408 | int val; |
409 | struct cleanup *saved_cleanup_chain; | |
81066208 | 410 | char *saved_error_pre_print; |
bd5635a1 RP |
411 | |
412 | saved_cleanup_chain = save_cleanups (); | |
81066208 | 413 | saved_error_pre_print = error_pre_print; |
bd5635a1 | 414 | |
9748446f JK |
415 | if (mask & RETURN_MASK_ERROR) |
416 | memcpy ((char *)saved_error, (char *)error_return, sizeof (jmp_buf)); | |
417 | if (mask & RETURN_MASK_QUIT) | |
418 | memcpy (saved_quit, quit_return, sizeof (jmp_buf)); | |
81066208 | 419 | error_pre_print = errstring; |
bd5635a1 | 420 | |
9748446f JK |
421 | if (setjmp (tmp_jmp) == 0) |
422 | { | |
423 | if (mask & RETURN_MASK_ERROR) | |
424 | memcpy (error_return, tmp_jmp, sizeof (jmp_buf)); | |
425 | if (mask & RETURN_MASK_QUIT) | |
426 | memcpy (quit_return, tmp_jmp, sizeof (jmp_buf)); | |
427 | val = (*func) (args); | |
428 | } | |
bd5635a1 | 429 | else |
81066208 | 430 | val = 0; |
bd5635a1 RP |
431 | |
432 | restore_cleanups (saved_cleanup_chain); | |
433 | ||
81066208 | 434 | error_pre_print = saved_error_pre_print; |
9748446f JK |
435 | if (mask & RETURN_MASK_ERROR) |
436 | memcpy (error_return, saved_error, sizeof (jmp_buf)); | |
437 | if (mask & RETURN_MASK_QUIT) | |
438 | memcpy (quit_return, saved_quit, sizeof (jmp_buf)); | |
bd5635a1 RP |
439 | return val; |
440 | } | |
441 | ||
442 | /* Handler for SIGHUP. */ | |
443 | ||
444 | static void | |
30875e1c SG |
445 | disconnect (signo) |
446 | int signo; | |
bd5635a1 | 447 | { |
6fe90fc8 | 448 | catch_errors (quit_cover, NULL, |
9748446f | 449 | "Could not kill the program being debugged", RETURN_MASK_ALL); |
597dc86b | 450 | signal (SIGHUP, SIG_DFL); |
bd5635a1 RP |
451 | kill (getpid (), SIGHUP); |
452 | } | |
597dc86b SG |
453 | |
454 | /* Just a little helper function for disconnect(). */ | |
455 | ||
456 | static int | |
457 | quit_cover (s) | |
458 | char *s; | |
459 | { | |
460 | caution = 0; /* Throw caution to the wind -- we're exiting. | |
461 | This prevents asking the user dumb questions. */ | |
462 | quit_command((char *)0, 0); | |
463 | return 0; | |
464 | } | |
bd5635a1 RP |
465 | \f |
466 | /* Clean up on error during a "source" command (or execution of a | |
467 | user-defined command). */ | |
468 | ||
469 | static void | |
470 | source_cleanup (stream) | |
471 | FILE *stream; | |
472 | { | |
473 | /* Restore the previous input stream. */ | |
474 | instream = stream; | |
475 | } | |
476 | ||
477 | /* Read commands from STREAM. */ | |
478 | static void | |
479 | read_command_file (stream) | |
480 | FILE *stream; | |
481 | { | |
482 | struct cleanup *cleanups; | |
483 | ||
484 | cleanups = make_cleanup (source_cleanup, instream); | |
485 | instream = stream; | |
486 | command_loop (); | |
487 | do_cleanups (cleanups); | |
488 | } | |
489 | \f | |
490 | int | |
491 | main (argc, argv) | |
492 | int argc; | |
493 | char **argv; | |
494 | { | |
495 | int count; | |
bd5635a1 RP |
496 | static int quiet = 0; |
497 | static int batch = 0; | |
498 | ||
499 | /* Pointers to various arguments from command line. */ | |
500 | char *symarg = NULL; | |
501 | char *execarg = NULL; | |
502 | char *corearg = NULL; | |
503 | char *cdarg = NULL; | |
504 | char *ttyarg = NULL; | |
505 | ||
c307bb11 JK |
506 | /* These are static so that we can take their address in an initializer. */ |
507 | static int print_help; | |
508 | static int print_version; | |
509 | ||
510 | /* Pointers to all arguments of --command option. */ | |
bd5635a1 RP |
511 | char **cmdarg; |
512 | /* Allocated size of cmdarg. */ | |
513 | int cmdsize; | |
514 | /* Number of elements of cmdarg used. */ | |
515 | int ncmd; | |
516 | ||
c307bb11 | 517 | /* Indices of all arguments of --directory option. */ |
bd5635a1 RP |
518 | char **dirarg; |
519 | /* Allocated size. */ | |
520 | int dirsize; | |
521 | /* Number of elements used. */ | |
522 | int ndir; | |
523 | ||
3a16d640 JG |
524 | struct stat homebuf, cwdbuf; |
525 | char *homedir, *homeinit; | |
526 | ||
bd5635a1 RP |
527 | register int i; |
528 | ||
529 | /* This needs to happen before the first use of malloc. */ | |
318bf84f | 530 | init_malloc ((PTR) NULL); |
bd5635a1 RP |
531 | |
532 | #if defined (ALIGN_STACK_ON_STARTUP) | |
533 | i = (int) &count & 0x3; | |
534 | if (i != 0) | |
535 | alloca (4 - i); | |
536 | #endif | |
537 | ||
bd099407 | 538 | /* If error() is called from initialization code, just exit */ |
9748446f | 539 | if (SET_TOP_LEVEL ()) { |
bd099407 JG |
540 | exit(1); |
541 | } | |
542 | ||
bd5635a1 RP |
543 | cmdsize = 1; |
544 | cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg)); | |
545 | ncmd = 0; | |
546 | dirsize = 1; | |
547 | dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg)); | |
548 | ndir = 0; | |
549 | ||
550 | quit_flag = 0; | |
551 | line = (char *) xmalloc (linesize); | |
552 | line[0] = '\0'; /* Terminate saved (now empty) cmd line */ | |
553 | instream = stdin; | |
554 | ||
f7402c04 | 555 | getcwd (dirbuf, sizeof (dirbuf)); |
bd5635a1 RP |
556 | current_directory = dirbuf; |
557 | ||
558 | #ifdef SET_STACK_LIMIT_HUGE | |
559 | { | |
560 | struct rlimit rlim; | |
561 | ||
562 | /* Set the stack limit huge so that alloca (particularly stringtab | |
563 | * in dbxread.c) does not fail. */ | |
564 | getrlimit (RLIMIT_STACK, &rlim); | |
565 | original_stack_limit = rlim.rlim_cur; | |
566 | rlim.rlim_cur = rlim.rlim_max; | |
567 | setrlimit (RLIMIT_STACK, &rlim); | |
568 | } | |
569 | #endif /* SET_STACK_LIMIT_HUGE */ | |
570 | ||
571 | /* Parse arguments and options. */ | |
572 | { | |
573 | int c; | |
bd5635a1 RP |
574 | /* When var field is 0, use flag field to record the equivalent |
575 | short option (or arbitrary numbers starting at 10 for those | |
576 | with no equivalent). */ | |
577 | static struct option long_options[] = | |
578 | { | |
318bf84f FF |
579 | {"readnow", no_argument, &readnow_symbol_files, 1}, |
580 | {"r", no_argument, &readnow_symbol_files, 1}, | |
581 | {"mapped", no_argument, &mapped_symbol_files, 1}, | |
582 | {"m", no_argument, &mapped_symbol_files, 1}, | |
ee0613d1 JG |
583 | {"quiet", no_argument, &quiet, 1}, |
584 | {"q", no_argument, &quiet, 1}, | |
fb29d681 | 585 | {"silent", no_argument, &quiet, 1}, |
ee0613d1 JG |
586 | {"nx", no_argument, &inhibit_gdbinit, 1}, |
587 | {"n", no_argument, &inhibit_gdbinit, 1}, | |
588 | {"batch", no_argument, &batch, 1}, | |
589 | {"epoch", no_argument, &epoch_interface, 1}, | |
590 | {"fullname", no_argument, &frame_file_full_name, 1}, | |
591 | {"f", no_argument, &frame_file_full_name, 1}, | |
592 | {"help", no_argument, &print_help, 1}, | |
593 | {"se", required_argument, 0, 10}, | |
594 | {"symbols", required_argument, 0, 's'}, | |
595 | {"s", required_argument, 0, 's'}, | |
596 | {"exec", required_argument, 0, 'e'}, | |
597 | {"e", required_argument, 0, 'e'}, | |
598 | {"core", required_argument, 0, 'c'}, | |
599 | {"c", required_argument, 0, 'c'}, | |
600 | {"command", required_argument, 0, 'x'}, | |
c307bb11 | 601 | {"version", no_argument, &print_version, 1}, |
ee0613d1 JG |
602 | {"x", required_argument, 0, 'x'}, |
603 | {"directory", required_argument, 0, 'd'}, | |
604 | {"cd", required_argument, 0, 11}, | |
605 | {"tty", required_argument, 0, 't'}, | |
606 | {"baud", required_argument, 0, 'b'}, | |
607 | {"b", required_argument, 0, 'b'}, | |
bd5635a1 RP |
608 | /* Allow machine descriptions to add more options... */ |
609 | #ifdef ADDITIONAL_OPTIONS | |
610 | ADDITIONAL_OPTIONS | |
611 | #endif | |
ee0613d1 | 612 | {0, no_argument, 0, 0}, |
bd5635a1 RP |
613 | }; |
614 | ||
615 | while (1) | |
616 | { | |
ee0613d1 JG |
617 | int option_index; |
618 | ||
bd5635a1 RP |
619 | c = getopt_long_only (argc, argv, "", |
620 | long_options, &option_index); | |
621 | if (c == EOF) | |
622 | break; | |
623 | ||
624 | /* Long option that takes an argument. */ | |
625 | if (c == 0 && long_options[option_index].flag == 0) | |
626 | c = long_options[option_index].val; | |
627 | ||
628 | switch (c) | |
629 | { | |
630 | case 0: | |
631 | /* Long option that just sets a flag. */ | |
632 | break; | |
633 | case 10: | |
634 | symarg = optarg; | |
635 | execarg = optarg; | |
636 | break; | |
637 | case 11: | |
638 | cdarg = optarg; | |
639 | break; | |
640 | case 's': | |
641 | symarg = optarg; | |
642 | break; | |
643 | case 'e': | |
644 | execarg = optarg; | |
645 | break; | |
646 | case 'c': | |
647 | corearg = optarg; | |
648 | break; | |
649 | case 'x': | |
650 | cmdarg[ncmd++] = optarg; | |
651 | if (ncmd >= cmdsize) | |
652 | { | |
653 | cmdsize *= 2; | |
654 | cmdarg = (char **) xrealloc ((char *)cmdarg, | |
655 | cmdsize * sizeof (*cmdarg)); | |
656 | } | |
657 | break; | |
658 | case 'd': | |
659 | dirarg[ndir++] = optarg; | |
660 | if (ndir >= dirsize) | |
661 | { | |
662 | dirsize *= 2; | |
663 | dirarg = (char **) xrealloc ((char *)dirarg, | |
664 | dirsize * sizeof (*dirarg)); | |
665 | } | |
666 | break; | |
667 | case 't': | |
668 | ttyarg = optarg; | |
669 | break; | |
670 | case 'q': | |
671 | quiet = 1; | |
672 | break; | |
673 | case 'b': | |
d0d8484a SG |
674 | { |
675 | int i; | |
676 | char *p; | |
677 | ||
678 | i = strtol (optarg, &p, 0); | |
679 | if (i == 0 && p == optarg) | |
680 | warning ("Could not set baud rate to `%s'.\n", optarg); | |
681 | else | |
682 | baud_rate = i; | |
683 | } | |
bd5635a1 | 684 | break; |
d0d8484a | 685 | |
bd5635a1 RP |
686 | #ifdef ADDITIONAL_OPTION_CASES |
687 | ADDITIONAL_OPTION_CASES | |
688 | #endif | |
689 | case '?': | |
597dc86b | 690 | fprintf (stderr, |
fb29d681 | 691 | "Use `%s --help' for a complete list of options.\n", |
bd5635a1 RP |
692 | argv[0]); |
693 | exit (1); | |
694 | } | |
bd5635a1 | 695 | } |
fb29d681 | 696 | |
bd5635a1 RP |
697 | /* OK, that's all the options. The other arguments are filenames. */ |
698 | count = 0; | |
699 | for (; optind < argc; optind++) | |
700 | switch (++count) | |
701 | { | |
702 | case 1: | |
703 | symarg = argv[optind]; | |
704 | execarg = argv[optind]; | |
705 | break; | |
706 | case 2: | |
707 | corearg = argv[optind]; | |
708 | break; | |
709 | case 3: | |
597dc86b | 710 | fprintf (stderr, |
bd5635a1 RP |
711 | "Excess command line arguments ignored. (%s%s)\n", |
712 | argv[optind], (optind == argc - 1) ? "" : " ..."); | |
713 | break; | |
714 | } | |
715 | if (batch) | |
716 | quiet = 1; | |
717 | } | |
718 | ||
719 | /* Run the init function of each source file */ | |
720 | ||
fc61e9ee | 721 | init_cmd_lists (); /* This needs to be done first */ |
bd5635a1 | 722 | initialize_all_files (); |
fc61e9ee | 723 | init_main (); /* But that omits this file! Do it now */ |
bd5635a1 RP |
724 | init_signals (); |
725 | ||
c307bb11 JK |
726 | /* Do these (and anything which might call wrap_here or *_filtered) |
727 | after initialize_all_files. */ | |
728 | if (print_version) | |
729 | { | |
730 | print_gdb_version (stdout); | |
731 | wrap_here (""); | |
732 | printf_filtered ("\n"); | |
733 | exit (0); | |
734 | } | |
735 | ||
736 | if (print_help) | |
737 | { | |
738 | /* --version is intentionally not documented here, because we | |
739 | are printing the version here, and the help is long enough | |
740 | already. */ | |
741 | ||
742 | print_gdb_version (stdout); | |
743 | /* Make sure the output gets printed. */ | |
744 | wrap_here (""); | |
745 | printf_filtered ("\n"); | |
746 | ||
747 | /* But don't use *_filtered here. We don't want to prompt for continue | |
748 | no matter how small the screen or how much we're going to print. */ | |
749 | fputs ("\ | |
750 | This is the GNU debugger. Usage:\n\ | |
751 | gdb [options] [executable-file [core-file or process-id]]\n\ | |
752 | Options:\n\ | |
753 | --help Print this message.\n\ | |
754 | --quiet Do not print version number on startup.\n\ | |
755 | --fullname Output information used by emacs-GDB interface.\n\ | |
756 | --epoch Output information used by epoch emacs-GDB interface.\n\ | |
757 | --batch Exit after processing options.\n\ | |
758 | --nx Do not read .gdbinit file.\n\ | |
759 | --tty=TTY Use TTY for input/output by the program being debugged.\n\ | |
760 | --cd=DIR Change current directory to DIR.\n\ | |
761 | --directory=DIR Search for source files in DIR.\n\ | |
762 | --command=FILE Execute GDB commands from FILE.\n\ | |
763 | --symbols=SYMFILE Read symbols from SYMFILE.\n\ | |
764 | --exec=EXECFILE Use EXECFILE as the executable.\n\ | |
765 | --se=FILE Use FILE as symbol file and executable file.\n\ | |
766 | --core=COREFILE Analyze the core dump COREFILE.\n\ | |
767 | -b BAUDRATE Set serial port baud rate used for remote debugging.\n\ | |
768 | --mapped Use mapped symbol files if supported on this system.\n\ | |
769 | --readnow Fully read symbol files on first access.\n\ | |
770 | ", stdout); | |
771 | #ifdef ADDITIONAL_OPTION_HELP | |
772 | fputs (ADDITIONAL_OPTION_HELP, stdout); | |
773 | #endif | |
774 | fputs ("\n\ | |
775 | For more information, type \"help\" from within GDB, or consult the\n\ | |
776 | GDB manual (available as on-line info or a printed manual).\n", stdout); | |
777 | exit (0); | |
778 | } | |
779 | ||
bd5635a1 RP |
780 | if (!quiet) |
781 | { | |
81066208 JG |
782 | /* Print all the junk at the top, with trailing "..." if we are about |
783 | to read a symbol file (possibly slowly). */ | |
784 | print_gnu_advertisement (); | |
fb29d681 | 785 | print_gdb_version (stdout); |
81066208 JG |
786 | if (symarg) |
787 | printf_filtered (".."); | |
bd099407 | 788 | wrap_here(""); |
81066208 | 789 | fflush (stdout); /* Force to screen during slow operations */ |
bd5635a1 RP |
790 | } |
791 | ||
81066208 | 792 | error_pre_print = "\n\n"; |
51b57ded FF |
793 | /* We may get more than one warning, don't double space all of them... */ |
794 | warning_pre_print = "\nwarning: "; | |
81066208 | 795 | |
538280d8 FF |
796 | /* We need a default language for parsing expressions, so simple things like |
797 | "set width 0" won't fail if no language is explicitly set in a config file | |
798 | or implicitly set by reading an executable during startup. */ | |
799 | set_language (language_c); | |
b5af69c3 | 800 | expected_language = current_language; /* don't warn about the change. */ |
538280d8 | 801 | |
3a16d640 JG |
802 | /* Read and execute $HOME/.gdbinit file, if it exists. This is done |
803 | *before* all the command line arguments are processed; it sets | |
804 | global parameters, which are independent of what file you are | |
805 | debugging or what directory you are in. */ | |
806 | homedir = getenv ("HOME"); | |
807 | if (homedir) | |
808 | { | |
809 | homeinit = (char *) alloca (strlen (getenv ("HOME")) + | |
810 | strlen (gdbinit) + 10); | |
811 | strcpy (homeinit, getenv ("HOME")); | |
812 | strcat (homeinit, "/"); | |
813 | strcat (homeinit, gdbinit); | |
814 | if (!inhibit_gdbinit && access (homeinit, R_OK) == 0) | |
815 | { | |
9748446f | 816 | if (!SET_TOP_LEVEL ()) |
3a16d640 JG |
817 | source_command (homeinit, 0); |
818 | } | |
819 | do_cleanups (ALL_CLEANUPS); | |
820 | ||
821 | /* Do stats; no need to do them elsewhere since we'll only | |
822 | need them if homedir is set. Make sure that they are | |
823 | zero in case one of them fails (this guarantees that they | |
824 | won't match if either exists). */ | |
825 | ||
826 | memset (&homebuf, 0, sizeof (struct stat)); | |
827 | memset (&cwdbuf, 0, sizeof (struct stat)); | |
828 | ||
829 | stat (homeinit, &homebuf); | |
830 | stat (gdbinit, &cwdbuf); /* We'll only need this if | |
831 | homedir was set. */ | |
832 | } | |
833 | ||
bd5635a1 RP |
834 | /* Now perform all the actions indicated by the arguments. */ |
835 | if (cdarg != NULL) | |
836 | { | |
9748446f | 837 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
838 | { |
839 | cd_command (cdarg, 0); | |
840 | init_source_path (); | |
841 | } | |
842 | } | |
f266e564 JK |
843 | do_cleanups (ALL_CLEANUPS); |
844 | ||
bd5635a1 | 845 | for (i = 0; i < ndir; i++) |
9748446f | 846 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 847 | directory_command (dirarg[i], 0); |
51b57ded | 848 | free ((PTR)dirarg); |
f266e564 JK |
849 | do_cleanups (ALL_CLEANUPS); |
850 | ||
bd5635a1 RP |
851 | if (execarg != NULL |
852 | && symarg != NULL | |
2e4964ad | 853 | && STREQ (execarg, symarg)) |
bd5635a1 RP |
854 | { |
855 | /* The exec file and the symbol-file are the same. If we can't open | |
856 | it, better only print one error message. */ | |
9748446f | 857 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
858 | { |
859 | exec_file_command (execarg, !batch); | |
81066208 | 860 | symbol_file_command (symarg, 0); |
bd5635a1 RP |
861 | } |
862 | } | |
863 | else | |
864 | { | |
865 | if (execarg != NULL) | |
9748446f | 866 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
867 | exec_file_command (execarg, !batch); |
868 | if (symarg != NULL) | |
9748446f | 869 | if (!SET_TOP_LEVEL ()) |
81066208 | 870 | symbol_file_command (symarg, 0); |
bd5635a1 | 871 | } |
f266e564 JK |
872 | do_cleanups (ALL_CLEANUPS); |
873 | ||
81066208 JG |
874 | /* After the symbol file has been read, print a newline to get us |
875 | beyond the copyright line... But errors should still set off | |
876 | the error message with a (single) blank line. */ | |
afe4ca15 JG |
877 | if (!quiet) |
878 | printf_filtered ("\n"); | |
81066208 | 879 | error_pre_print = "\n"; |
318bf84f | 880 | warning_pre_print = "\nwarning: "; |
81066208 | 881 | |
bd5635a1 | 882 | if (corearg != NULL) |
9748446f | 883 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 884 | core_file_command (corearg, !batch); |
9748446f | 885 | else if (isdigit (corearg[0]) && !SET_TOP_LEVEL ()) |
bd5635a1 | 886 | attach_command (corearg, !batch); |
f266e564 | 887 | do_cleanups (ALL_CLEANUPS); |
bd5635a1 RP |
888 | |
889 | if (ttyarg != NULL) | |
9748446f | 890 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 891 | tty_command (ttyarg, !batch); |
f266e564 | 892 | do_cleanups (ALL_CLEANUPS); |
bd5635a1 RP |
893 | |
894 | #ifdef ADDITIONAL_OPTION_HANDLER | |
895 | ADDITIONAL_OPTION_HANDLER; | |
896 | #endif | |
897 | ||
81066208 JG |
898 | /* Error messages should no longer be distinguished with extra output. */ |
899 | error_pre_print = 0; | |
318bf84f | 900 | warning_pre_print = "warning: "; |
81066208 | 901 | |
3a16d640 JG |
902 | /* Read the .gdbinit file in the current directory, *if* it isn't |
903 | the same as the $HOME/.gdbinit file (it should exist, also). */ | |
904 | ||
905 | if (!homedir | |
906 | || memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat))) | |
907 | if (!inhibit_gdbinit && access (gdbinit, R_OK) == 0) | |
bd5635a1 | 908 | { |
9748446f | 909 | if (!SET_TOP_LEVEL ()) |
d75710b0 | 910 | source_command (gdbinit, 0); |
bd5635a1 | 911 | } |
d75710b0 FF |
912 | do_cleanups (ALL_CLEANUPS); |
913 | ||
914 | for (i = 0; i < ncmd; i++) | |
915 | { | |
9748446f | 916 | if (!SET_TOP_LEVEL ()) |
d75710b0 FF |
917 | { |
918 | if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0') | |
919 | read_command_file (stdin); | |
920 | else | |
921 | source_command (cmdarg[i], !batch); | |
922 | do_cleanups (ALL_CLEANUPS); | |
923 | } | |
924 | } | |
51b57ded | 925 | free ((PTR)cmdarg); |
bd5635a1 | 926 | |
8b3c897a | 927 | /* Read in the old history after all the command files have been read. */ |
fc61e9ee | 928 | init_history(); |
8b3c897a | 929 | |
bd5635a1 RP |
930 | if (batch) |
931 | { | |
932 | /* We have hit the end of the batch file. */ | |
933 | exit (0); | |
934 | } | |
935 | ||
936 | /* Do any host- or target-specific hacks. This is used for i960 targets | |
937 | to force the user to set a nindy target and spec its parameters. */ | |
938 | ||
939 | #ifdef BEFORE_MAIN_LOOP_HOOK | |
940 | BEFORE_MAIN_LOOP_HOOK; | |
941 | #endif | |
942 | ||
943 | /* The command loop. */ | |
944 | ||
945 | while (1) | |
946 | { | |
9748446f | 947 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 948 | { |
f266e564 | 949 | do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */ |
bd5635a1 RP |
950 | command_loop (); |
951 | quit_command ((char *)0, instream == stdin); | |
952 | } | |
953 | } | |
954 | /* No exit -- exit is through quit_command. */ | |
955 | } | |
956 | ||
b5af69c3 JG |
957 | void |
958 | execute_user_command (c, args) | |
959 | struct cmd_list_element *c; | |
960 | char *args; | |
961 | { | |
962 | register struct command_line *cmdlines; | |
963 | struct cleanup *old_chain; | |
964 | ||
965 | if (args) | |
966 | error ("User-defined commands cannot take arguments."); | |
967 | ||
968 | cmdlines = c->user_commands; | |
969 | if (cmdlines == 0) | |
970 | /* Null command */ | |
971 | return; | |
972 | ||
973 | /* Set the instream to 0, indicating execution of a | |
974 | user-defined function. */ | |
975 | old_chain = make_cleanup (source_cleanup, instream); | |
976 | instream = (FILE *) 0; | |
977 | while (cmdlines) | |
978 | { | |
979 | execute_command (cmdlines->line, 0); | |
980 | cmdlines = cmdlines->next; | |
981 | } | |
982 | do_cleanups (old_chain); | |
983 | } | |
984 | ||
bd5635a1 RP |
985 | /* Execute the line P as a command. |
986 | Pass FROM_TTY as second argument to the defining function. */ | |
987 | ||
988 | void | |
989 | execute_command (p, from_tty) | |
990 | char *p; | |
991 | int from_tty; | |
992 | { | |
993 | register struct cmd_list_element *c; | |
bd099407 | 994 | register enum language flang; |
bd099407 | 995 | static int warned = 0; |
bd5635a1 RP |
996 | |
997 | free_all_values (); | |
998 | ||
999 | /* This can happen when command_line_input hits end of file. */ | |
1000 | if (p == NULL) | |
1001 | return; | |
1002 | ||
1003 | while (*p == ' ' || *p == '\t') p++; | |
1004 | if (*p) | |
1005 | { | |
1006 | char *arg; | |
1007 | ||
1008 | c = lookup_cmd (&p, cmdlist, "", 0, 1); | |
1009 | /* Pass null arg rather than an empty one. */ | |
1010 | arg = *p ? p : 0; | |
b5af69c3 JG |
1011 | |
1012 | /* If this command has been hooked, run the hook first. */ | |
1013 | if (c->hook) | |
1014 | execute_user_command (c->hook, (char *)0); | |
1015 | ||
bd5635a1 | 1016 | if (c->class == class_user) |
b5af69c3 | 1017 | execute_user_command (c, arg); |
bd5635a1 RP |
1018 | else if (c->type == set_cmd || c->type == show_cmd) |
1019 | do_setshow_command (arg, from_tty & caution, c); | |
30875e1c | 1020 | else if (c->function.cfunc == NO_FUNCTION) |
bd5635a1 RP |
1021 | error ("That is not a command, just a help topic."); |
1022 | else | |
30875e1c | 1023 | (*c->function.cfunc) (arg, from_tty & caution); |
bd099407 JG |
1024 | } |
1025 | ||
afe4ca15 | 1026 | /* Tell the user if the language has changed (except first time). */ |
b5af69c3 | 1027 | if (current_language != expected_language) |
bd099407 JG |
1028 | { |
1029 | if (language_mode == language_mode_auto) { | |
b5af69c3 | 1030 | language_info (1); /* Print what changed. */ |
bd5635a1 | 1031 | } |
bd099407 JG |
1032 | warned = 0; |
1033 | } | |
1034 | ||
1035 | /* Warn the user if the working language does not match the | |
1036 | language of the current frame. Only warn the user if we are | |
1037 | actually running the program, i.e. there is a stack. */ | |
afe4ca15 JG |
1038 | /* FIXME: This should be cacheing the frame and only running when |
1039 | the frame changes. */ | |
bd099407 JG |
1040 | if (target_has_stack) |
1041 | { | |
afe4ca15 JG |
1042 | flang = get_frame_language (); |
1043 | if (!warned | |
1044 | && flang != language_unknown | |
1045 | && flang != current_language->la_language) | |
bd099407 JG |
1046 | { |
1047 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
1048 | warned = 1; | |
1049 | } | |
1050 | } | |
bd5635a1 RP |
1051 | } |
1052 | ||
1053 | /* ARGSUSED */ | |
30875e1c | 1054 | static void |
f266e564 | 1055 | command_loop_marker (foo) |
bd5635a1 RP |
1056 | int foo; |
1057 | { | |
1058 | } | |
1059 | ||
1060 | /* Read commands from `instream' and execute them | |
1061 | until end of file or error reading instream. */ | |
30875e1c | 1062 | static void |
bd5635a1 RP |
1063 | command_loop () |
1064 | { | |
1065 | struct cleanup *old_chain; | |
1066 | char *command; | |
1067 | int stdin_is_tty = ISATTY (stdin); | |
1068 | ||
1069 | while (!feof (instream)) | |
1070 | { | |
1071 | if (window_hook && instream == stdin) | |
1072 | (*window_hook) (instream, prompt); | |
1073 | ||
1074 | quit_flag = 0; | |
1075 | if (instream == stdin && stdin_is_tty) | |
1076 | reinitialize_more_filter (); | |
f266e564 | 1077 | old_chain = make_cleanup (command_loop_marker, 0); |
30875e1c | 1078 | command = command_line_input (instream == stdin ? prompt : (char *) NULL, |
bd5635a1 RP |
1079 | instream == stdin); |
1080 | if (command == 0) | |
1081 | return; | |
1082 | execute_command (command, instream == stdin); | |
1083 | /* Do any commands attached to breakpoint we stopped at. */ | |
1084 | bpstat_do_actions (&stop_bpstat); | |
1085 | do_cleanups (old_chain); | |
1086 | } | |
1087 | } | |
1088 | \f | |
1089 | /* Commands call this if they do not want to be repeated by null lines. */ | |
1090 | ||
1091 | void | |
1092 | dont_repeat () | |
1093 | { | |
1094 | /* If we aren't reading from standard input, we are saving the last | |
1095 | thing read from stdin in line and don't want to delete it. Null lines | |
1096 | won't repeat here in any case. */ | |
1097 | if (instream == stdin) | |
1098 | *line = 0; | |
1099 | } | |
1100 | \f | |
1101 | /* Read a line from the stream "instream" without command line editing. | |
1102 | ||
1103 | It prints PRROMPT once at the start. | |
bdbd5f50 JG |
1104 | Action is compatible with "readline", e.g. space for the result is |
1105 | malloc'd and should be freed by the caller. | |
bd5635a1 | 1106 | |
bdbd5f50 | 1107 | A NULL return means end of file. */ |
bd5635a1 | 1108 | char * |
bdbd5f50 | 1109 | gdb_readline (prrompt) |
bd5635a1 | 1110 | char *prrompt; |
bd5635a1 RP |
1111 | { |
1112 | int c; | |
1113 | char *result; | |
1114 | int input_index = 0; | |
1115 | int result_size = 80; | |
1116 | ||
1117 | if (prrompt) | |
1118 | { | |
c35475f9 JG |
1119 | /* Don't use a _filtered function here. It causes the assumed |
1120 | character position to be off, since the newline we read from | |
1121 | the user is not accounted for. */ | |
1122 | fputs (prrompt, stdout); | |
bd5635a1 RP |
1123 | fflush (stdout); |
1124 | } | |
1125 | ||
bdbd5f50 | 1126 | result = (char *) xmalloc (result_size); |
bd5635a1 RP |
1127 | |
1128 | while (1) | |
1129 | { | |
1130 | /* Read from stdin if we are executing a user defined command. | |
1131 | This is the right thing for prompt_for_continue, at least. */ | |
1132 | c = fgetc (instream ? instream : stdin); | |
bdbd5f50 JG |
1133 | |
1134 | if (c == EOF) | |
bd5635a1 | 1135 | { |
d0d8484a SG |
1136 | if (input_index > 0) |
1137 | /* The last line does not end with a newline. Return it, and | |
1138 | if we are called again fgetc will still return EOF and | |
1139 | we'll return NULL then. */ | |
1140 | break; | |
bdbd5f50 JG |
1141 | free (result); |
1142 | return NULL; | |
bd5635a1 | 1143 | } |
bd5635a1 | 1144 | |
bdbd5f50 JG |
1145 | if (c == '\n') |
1146 | break; | |
bd5635a1 | 1147 | |
bdbd5f50 JG |
1148 | result[input_index++] = c; |
1149 | while (input_index >= result_size) | |
1150 | { | |
1151 | result_size *= 2; | |
1152 | result = (char *) xrealloc (result, result_size); | |
1153 | } | |
bd5635a1 | 1154 | } |
bdbd5f50 JG |
1155 | |
1156 | result[input_index++] = '\0'; | |
1157 | return result; | |
bd5635a1 RP |
1158 | } |
1159 | ||
bd5635a1 RP |
1160 | /* Variables which control command line editing and history |
1161 | substitution. These variables are given default values at the end | |
1162 | of this file. */ | |
1163 | static int command_editing_p; | |
1164 | static int history_expansion_p; | |
1165 | static int write_history_p; | |
1166 | static int history_size; | |
1167 | static char *history_filename; | |
1168 | ||
c307bb11 JK |
1169 | /* readline uses the word breaks for two things: |
1170 | (1) In figuring out where to point the TEXT parameter to the | |
1171 | rl_completion_entry_function. Since we don't use TEXT for much, | |
1172 | it doesn't matter a lot what the word breaks are for this purpose, but | |
1173 | it does affect how much stuff M-? lists. | |
1174 | (2) If one of the matches contains a word break character, readline | |
1175 | will quote it. That's why we switch between | |
1176 | gdb_completer_word_break_characters and | |
1177 | gdb_completer_command_word_break_characters. I'm not sure when | |
1178 | we need this behavior (perhaps for funky characters in C++ symbols?). */ | |
1179 | ||
bd5635a1 RP |
1180 | /* Variables which are necessary for fancy command line editing. */ |
1181 | char *gdb_completer_word_break_characters = | |
a8e033f2 SG |
1182 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-"; |
1183 | ||
1184 | /* When completing on command names, we remove '-' from the list of | |
1185 | word break characters, since we use it in command names. If the | |
1186 | readline library sees one in any of the current completion strings, | |
1187 | it thinks that the string needs to be quoted and automatically supplies | |
1188 | a leading quote. */ | |
1189 | char *gdb_completer_command_word_break_characters = | |
1190 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,"; | |
1191 | ||
51b57ded FF |
1192 | /* Characters that can be used to quote completion strings. Note that we |
1193 | can't include '"' because the gdb C parser treats such quoted sequences | |
1194 | as strings. */ | |
1195 | char *gdb_completer_quote_characters = | |
1196 | "'"; | |
bd5635a1 RP |
1197 | |
1198 | /* Functions that are used as part of the fancy command line editing. */ | |
1199 | ||
1200 | /* This can be used for functions which don't want to complete on symbols | |
1201 | but don't want to complete on anything else either. */ | |
1202 | /* ARGSUSED */ | |
1203 | char ** | |
c307bb11 | 1204 | noop_completer (text, prefix) |
bd5635a1 | 1205 | char *text; |
c307bb11 | 1206 | char *prefix; |
bd5635a1 RP |
1207 | { |
1208 | return NULL; | |
1209 | } | |
1210 | ||
bd50d1b0 | 1211 | /* Complete on filenames. */ |
bd50d1b0 | 1212 | char ** |
c307bb11 | 1213 | filename_completer (text, word) |
bd50d1b0 | 1214 | char *text; |
c307bb11 | 1215 | char *word; |
bd50d1b0 JK |
1216 | { |
1217 | /* From readline. */ | |
1218 | extern char *filename_completion_function (); | |
1219 | int subsequent_name; | |
1220 | char **return_val; | |
1221 | int return_val_used; | |
1222 | int return_val_alloced; | |
1223 | ||
1224 | return_val_used = 0; | |
1225 | /* Small for testing. */ | |
1226 | return_val_alloced = 1; | |
1227 | return_val = (char **) xmalloc (return_val_alloced * sizeof (char *)); | |
1228 | ||
1229 | subsequent_name = 0; | |
1230 | while (1) | |
1231 | { | |
1232 | char *p; | |
1233 | p = filename_completion_function (text, subsequent_name); | |
1234 | if (return_val_used >= return_val_alloced) | |
1235 | { | |
1236 | return_val_alloced *= 2; | |
1237 | return_val = | |
1238 | (char **) xrealloc (return_val, | |
1239 | return_val_alloced * sizeof (char *)); | |
1240 | } | |
bd50d1b0 | 1241 | if (p == NULL) |
c307bb11 JK |
1242 | { |
1243 | return_val[return_val_used++] = p; | |
1244 | break; | |
1245 | } | |
1246 | /* Like emacs, don't complete on old versions. Especially useful | |
1247 | in the "source" command. */ | |
1248 | if (p[strlen (p) - 1] == '~') | |
1249 | continue; | |
1250 | ||
1251 | { | |
1252 | char *q; | |
1253 | if (word == text) | |
1254 | /* Return exactly p. */ | |
1255 | return_val[return_val_used++] = p; | |
1256 | else if (word > text) | |
1257 | { | |
1258 | /* Return some portion of p. */ | |
1259 | q = xmalloc (strlen (p) + 5); | |
1260 | strcpy (q, p + (word - text)); | |
1261 | return_val[return_val_used++] = q; | |
1262 | free (p); | |
1263 | } | |
1264 | else | |
1265 | { | |
1266 | /* Return some of TEXT plus p. */ | |
1267 | q = xmalloc (strlen (p) + (text - word) + 5); | |
1268 | strncpy (q, word, text - word); | |
1269 | q[text - word] = '\0'; | |
1270 | strcat (q, p); | |
1271 | return_val[return_val_used++] = q; | |
1272 | free (p); | |
1273 | } | |
1274 | } | |
bd50d1b0 JK |
1275 | subsequent_name = 1; |
1276 | } | |
c307bb11 JK |
1277 | #if 0 |
1278 | /* There is no way to do this just long enough to affect quote inserting | |
1279 | without also affecting the next completion. This should be fixed in | |
1280 | readline. FIXME. */ | |
1281 | /* Insure that readline does the right thing | |
1282 | with respect to inserting quotes. */ | |
1283 | rl_completer_word_break_characters = ""; | |
1284 | #endif | |
bd50d1b0 JK |
1285 | return return_val; |
1286 | } | |
1287 | ||
c307bb11 JK |
1288 | /* Here are some useful test cases for completion. FIXME: These should |
1289 | be put in the test suite. They should be tested with both M-? and TAB. | |
1290 | ||
1291 | "show output-" "radix" | |
1292 | "show output" "-radix" | |
1293 | "p" ambiguous (commands starting with p--path, print, printf, etc.) | |
1294 | "p " ambiguous (all symbols) | |
1295 | "info t foo" no completions | |
1296 | "info t " no completions | |
1297 | "info t" ambiguous ("info target", "info terminal", etc.) | |
1298 | "info ajksdlfk" no completions | |
1299 | "info ajksdlfk " no completions | |
1300 | "info" " " | |
1301 | "info " ambiguous (all info commands) | |
1302 | "p \"a" no completions (string constant) | |
1303 | "p 'a" ambiguous (all symbols starting with a) | |
1304 | "p b-a" ambiguous (all symbols starting with a) | |
1305 | "p b-" ambiguous (all symbols) | |
1306 | "file Make" "file" (word break hard to screw up here) | |
1307 | "file ../gdb.stabs/wi" "erd" (needs to not break word at slash) | |
1308 | */ | |
1309 | ||
1310 | /* Generate completions one by one for the completer. Each time we are | |
1311 | called return another potential completion to the caller. The function | |
1312 | is misnamed; it just completes on commands or passes the buck to the | |
1313 | command's completer function; the stuff specific to symbol completion | |
1314 | is in make_symbol_completion_list. | |
1315 | ||
1316 | TEXT is readline's idea of the "word" we are looking at; we don't really | |
1317 | like readline's ideas about word breaking so we ignore it. | |
51b57ded FF |
1318 | |
1319 | MATCHES is the number of matches that have currently been collected from | |
1320 | calling this completion function. When zero, then we need to initialize, | |
1321 | otherwise the initialization has already taken place and we can just | |
1322 | return the next potential completion string. | |
30875e1c | 1323 | |
51b57ded FF |
1324 | Returns NULL if there are no more completions, else a pointer to a string |
1325 | which is a possible completion. | |
1326 | ||
1327 | RL_LINE_BUFFER is available to be looked at; it contains the entire text | |
1328 | of the line. RL_POINT is the offset in that line of the cursor. You | |
1329 | should pretend that the line ends at RL_POINT. */ | |
c307bb11 | 1330 | |
30875e1c | 1331 | static char * |
51b57ded | 1332 | symbol_completion_function (text, matches) |
bd5635a1 | 1333 | char *text; |
51b57ded | 1334 | int matches; |
bd5635a1 | 1335 | { |
51b57ded FF |
1336 | static char **list = (char **)NULL; /* Cache of completions */ |
1337 | static int index; /* Next cached completion */ | |
1338 | char *output = NULL; | |
bd5635a1 | 1339 | char *tmp_command, *p; |
c307bb11 JK |
1340 | /* Pointer within tmp_command which corresponds to text. */ |
1341 | char *word; | |
bd5635a1 | 1342 | struct cmd_list_element *c, *result_list; |
51b57ded FF |
1343 | extern char *rl_line_buffer; |
1344 | extern int rl_point; | |
bd5635a1 | 1345 | |
51b57ded | 1346 | if (matches == 0) |
bd5635a1 | 1347 | { |
51b57ded FF |
1348 | /* The caller is beginning to accumulate a new set of completions, so |
1349 | we need to find all of them now, and cache them for returning one at | |
1350 | a time on future calls. */ | |
1351 | ||
bd5635a1 | 1352 | if (list) |
51b57ded FF |
1353 | { |
1354 | /* Free the storage used by LIST, but not by the strings inside. | |
1355 | This is because rl_complete_internal () frees the strings. */ | |
1356 | free ((PTR)list); | |
1357 | } | |
bd5635a1 RP |
1358 | list = 0; |
1359 | index = 0; | |
1360 | ||
a8e033f2 SG |
1361 | /* Choose the default set of word break characters to break completions. |
1362 | If we later find out that we are doing completions on command strings | |
1363 | (as opposed to strings supplied by the individual command completer | |
1364 | functions, which can be any string) then we will switch to the | |
1365 | special word break set for command strings, which leaves out the | |
c307bb11 | 1366 | '-' character used in some commands. */ |
bd50d1b0 | 1367 | |
a8e033f2 SG |
1368 | rl_completer_word_break_characters = |
1369 | gdb_completer_word_break_characters; | |
1370 | ||
51b57ded | 1371 | /* Decide whether to complete on a list of gdb commands or on symbols. */ |
bd5635a1 RP |
1372 | tmp_command = (char *) alloca (rl_point + 1); |
1373 | p = tmp_command; | |
c307bb11 | 1374 | |
bd5635a1 RP |
1375 | strncpy (tmp_command, rl_line_buffer, rl_point); |
1376 | tmp_command[rl_point] = '\0'; | |
c307bb11 JK |
1377 | /* Since text always contains some number of characters leading up |
1378 | to rl_point, we can find the equivalent position in tmp_command | |
1379 | by subtracting that many characters from the end of tmp_command. */ | |
1380 | word = tmp_command + rl_point - strlen (text); | |
bd5635a1 RP |
1381 | |
1382 | if (rl_point == 0) | |
1383 | { | |
51b57ded FF |
1384 | /* An empty line we want to consider ambiguous; that is, it |
1385 | could be any command. */ | |
bd5635a1 RP |
1386 | c = (struct cmd_list_element *) -1; |
1387 | result_list = 0; | |
1388 | } | |
1389 | else | |
51b57ded FF |
1390 | { |
1391 | c = lookup_cmd_1 (&p, cmdlist, &result_list, 1); | |
1392 | } | |
bd5635a1 RP |
1393 | |
1394 | /* Move p up to the next interesting thing. */ | |
1395 | while (*p == ' ' || *p == '\t') | |
51b57ded FF |
1396 | { |
1397 | p++; | |
1398 | } | |
bd5635a1 RP |
1399 | |
1400 | if (!c) | |
51b57ded | 1401 | { |
c307bb11 JK |
1402 | /* It is an unrecognized command. So there are no |
1403 | possible completions. */ | |
51b57ded FF |
1404 | list = NULL; |
1405 | } | |
bd5635a1 RP |
1406 | else if (c == (struct cmd_list_element *) -1) |
1407 | { | |
c307bb11 JK |
1408 | char *q; |
1409 | ||
1410 | /* lookup_cmd_1 advances p up to the first ambiguous thing, but | |
1411 | doesn't advance over that thing itself. Do so now. */ | |
1412 | q = p; | |
1413 | while (*q && (isalnum (*q) || *q == '-' || *q == '_')) | |
1414 | ++q; | |
1415 | if (q != tmp_command + rl_point) | |
51b57ded | 1416 | { |
c307bb11 JK |
1417 | /* There is something beyond the ambiguous |
1418 | command, so there are no possible completions. For | |
1419 | example, "info t " or "info t foo" does not complete | |
1420 | to anything, because "info t" can be "info target" or | |
1421 | "info terminal". */ | |
1422 | list = NULL; | |
51b57ded | 1423 | } |
bd5635a1 | 1424 | else |
51b57ded | 1425 | { |
c307bb11 JK |
1426 | /* We're trying to complete on the command which was ambiguous. |
1427 | This we can deal with. */ | |
1428 | if (result_list) | |
1429 | { | |
1430 | list = complete_on_cmdlist (*result_list->prefixlist, p, | |
1431 | word); | |
1432 | } | |
1433 | else | |
1434 | { | |
1435 | list = complete_on_cmdlist (cmdlist, p, word); | |
1436 | } | |
1437 | /* Insure that readline does the right thing with respect to | |
1438 | inserting quotes. */ | |
1439 | rl_completer_word_break_characters = | |
1440 | gdb_completer_command_word_break_characters; | |
51b57ded | 1441 | } |
bd5635a1 RP |
1442 | } |
1443 | else | |
1444 | { | |
c307bb11 | 1445 | /* We've recognized a full command. */ |
bd5635a1 | 1446 | |
c307bb11 | 1447 | if (p == tmp_command + rl_point) |
51b57ded | 1448 | { |
c307bb11 JK |
1449 | /* There is no non-whitespace in the line beyond the command. */ |
1450 | ||
1451 | if (p[-1] == ' ' || p[-1] == '\t') | |
51b57ded | 1452 | { |
c307bb11 JK |
1453 | /* The command is followed by whitespace; we need to complete |
1454 | on whatever comes after command. */ | |
1455 | if (c->prefixlist) | |
1456 | { | |
1457 | /* It is a prefix command; what comes after it is | |
1458 | a subcommand (e.g. "info "). */ | |
1459 | list = complete_on_cmdlist (*c->prefixlist, p, word); | |
1460 | ||
1461 | /* Insure that readline does the right thing | |
1462 | with respect to inserting quotes. */ | |
1463 | rl_completer_word_break_characters = | |
1464 | gdb_completer_command_word_break_characters; | |
1465 | } | |
1466 | else | |
1467 | { | |
1468 | /* It is a normal command; what comes after it is | |
1469 | completed by the command's completer function. */ | |
1470 | list = (*c->completer) (p, word); | |
1471 | } | |
51b57ded | 1472 | } |
bd5635a1 | 1473 | else |
51b57ded | 1474 | { |
c307bb11 JK |
1475 | /* The command is not followed by whitespace; we need to |
1476 | complete on the command itself. e.g. "p" which is a | |
1477 | command itself but also can complete to "print", "ptype" | |
1478 | etc. */ | |
1479 | char *q; | |
1480 | ||
1481 | /* Find the command we are completing on. */ | |
1482 | q = p; | |
1483 | while (q > tmp_command) | |
1484 | { | |
1485 | if (isalnum (q[-1]) || q[-1] == '-' || q[-1] == '_') | |
1486 | --q; | |
1487 | else | |
1488 | break; | |
1489 | } | |
1490 | ||
1491 | list = complete_on_cmdlist (result_list, q, word); | |
1492 | ||
1493 | /* Insure that readline does the right thing | |
1494 | with respect to inserting quotes. */ | |
1495 | rl_completer_word_break_characters = | |
1496 | gdb_completer_command_word_break_characters; | |
51b57ded | 1497 | } |
bd5635a1 RP |
1498 | } |
1499 | else | |
1500 | { | |
c307bb11 JK |
1501 | /* There is non-whitespace beyond the command. */ |
1502 | ||
bd5635a1 RP |
1503 | if (c->prefixlist && !c->allow_unknown) |
1504 | { | |
c307bb11 JK |
1505 | /* It is an unrecognized subcommand of a prefix command, |
1506 | e.g. "info adsfkdj". */ | |
bd5635a1 | 1507 | list = NULL; |
bd5635a1 RP |
1508 | } |
1509 | else | |
51b57ded | 1510 | { |
c307bb11 JK |
1511 | /* It is a normal command. */ |
1512 | list = (*c->completer) (p, word); | |
51b57ded | 1513 | } |
bd5635a1 RP |
1514 | } |
1515 | } | |
1516 | } | |
1517 | ||
51b57ded FF |
1518 | /* If we found a list of potential completions during initialization then |
1519 | dole them out one at a time. The vector of completions is NULL | |
1520 | terminated, so after returning the last one, return NULL (and continue | |
1521 | to do so) each time we are called after that, until a new list is | |
1522 | available. */ | |
bd5635a1 | 1523 | |
51b57ded FF |
1524 | if (list) |
1525 | { | |
1526 | output = list[index]; | |
1527 | if (output) | |
1528 | { | |
1529 | index++; | |
1530 | } | |
1531 | } | |
bd5635a1 | 1532 | |
c307bb11 JK |
1533 | #if 0 |
1534 | /* Can't do this because readline hasn't yet checked the word breaks | |
1535 | for figuring out whether to insert a quote. */ | |
1536 | if (output == NULL) | |
1537 | /* Make sure the word break characters are set back to normal for the | |
1538 | next time that readline tries to complete something. */ | |
1539 | rl_completer_word_break_characters = | |
1540 | gdb_completer_word_break_characters; | |
1541 | #endif | |
1542 | ||
bd5635a1 RP |
1543 | return (output); |
1544 | } | |
51b57ded FF |
1545 | |
1546 | /* Skip over a possibly quoted word (as defined by the quote characters | |
1547 | and word break characters the completer uses). Returns pointer to the | |
1548 | location after the "word". */ | |
1549 | ||
1550 | char * | |
1551 | skip_quoted (str) | |
1552 | char *str; | |
1553 | { | |
1554 | char quote_char = '\0'; | |
1555 | char *scan; | |
1556 | ||
1557 | for (scan = str; *scan != '\0'; scan++) | |
1558 | { | |
1559 | if (quote_char != '\0') | |
1560 | { | |
1561 | /* Ignore everything until the matching close quote char */ | |
1562 | if (*scan == quote_char) | |
1563 | { | |
1564 | /* Found matching close quote. */ | |
1565 | scan++; | |
1566 | break; | |
1567 | } | |
1568 | } | |
1569 | else if (strchr (gdb_completer_quote_characters, *scan)) | |
1570 | { | |
1571 | /* Found start of a quoted string. */ | |
1572 | quote_char = *scan; | |
1573 | } | |
1574 | else if (strchr (gdb_completer_word_break_characters, *scan)) | |
1575 | { | |
1576 | break; | |
1577 | } | |
1578 | } | |
1579 | return (scan); | |
1580 | } | |
1581 | ||
bd5635a1 RP |
1582 | \f |
1583 | #ifdef STOP_SIGNAL | |
1584 | static void | |
30875e1c SG |
1585 | stop_sig (signo) |
1586 | int signo; | |
bd5635a1 RP |
1587 | { |
1588 | #if STOP_SIGNAL == SIGTSTP | |
1589 | signal (SIGTSTP, SIG_DFL); | |
1590 | sigsetmask (0); | |
1591 | kill (getpid (), SIGTSTP); | |
1592 | signal (SIGTSTP, stop_sig); | |
1593 | #else | |
1594 | signal (STOP_SIGNAL, stop_sig); | |
1595 | #endif | |
597dc86b | 1596 | printf ("%s", prompt); |
bd5635a1 RP |
1597 | fflush (stdout); |
1598 | ||
1599 | /* Forget about any previous command -- null line now will do nothing. */ | |
1600 | dont_repeat (); | |
1601 | } | |
1602 | #endif /* STOP_SIGNAL */ | |
1603 | ||
bd5635a1 | 1604 | /* Initialize signal handlers. */ |
f266e564 | 1605 | static void |
30875e1c SG |
1606 | do_nothing (signo) |
1607 | int signo; | |
f266e564 JK |
1608 | { |
1609 | } | |
1610 | ||
bd5635a1 RP |
1611 | static void |
1612 | init_signals () | |
1613 | { | |
bd5635a1 RP |
1614 | signal (SIGINT, request_quit); |
1615 | ||
1616 | /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get | |
1617 | passed to the inferior, which we don't want. It would be | |
1618 | possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but | |
bdbd5f50 | 1619 | on BSD4.3 systems using vfork, that can affect the |
bd5635a1 | 1620 | GDB process as well as the inferior (the signal handling tables |
bdbd5f50 | 1621 | might be in memory, shared between the two). Since we establish |
bd5635a1 RP |
1622 | a handler for SIGQUIT, when we call exec it will set the signal |
1623 | to SIG_DFL for us. */ | |
1624 | signal (SIGQUIT, do_nothing); | |
1625 | if (signal (SIGHUP, do_nothing) != SIG_IGN) | |
1626 | signal (SIGHUP, disconnect); | |
1627 | signal (SIGFPE, float_handler); | |
1eeba686 PB |
1628 | |
1629 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) | |
1630 | signal (SIGWINCH, SIGWINCH_HANDLER); | |
1631 | #endif | |
bd5635a1 RP |
1632 | } |
1633 | \f | |
1634 | /* Read one line from the command input stream `instream' | |
1635 | into the local static buffer `linebuffer' (whose current length | |
1636 | is `linelength'). | |
1637 | The buffer is made bigger as necessary. | |
1638 | Returns the address of the start of the line. | |
1639 | ||
1640 | NULL is returned for end of file. | |
1641 | ||
1642 | *If* the instream == stdin & stdin is a terminal, the line read | |
1643 | is copied into the file line saver (global var char *line, | |
1644 | length linesize) so that it can be duplicated. | |
1645 | ||
1646 | This routine either uses fancy command line editing or | |
1647 | simple input as the user has requested. */ | |
1648 | ||
1649 | char * | |
1650 | command_line_input (prrompt, repeat) | |
1651 | char *prrompt; | |
1652 | int repeat; | |
1653 | { | |
1654 | static char *linebuffer = 0; | |
30875e1c | 1655 | static unsigned linelength = 0; |
bd5635a1 RP |
1656 | register char *p; |
1657 | char *p1; | |
1658 | char *rl; | |
1659 | char *local_prompt = prrompt; | |
1660 | register int c; | |
1661 | char *nline; | |
1662 | char got_eof = 0; | |
1663 | ||
1664 | if (linebuffer == 0) | |
1665 | { | |
1666 | linelength = 80; | |
1667 | linebuffer = (char *) xmalloc (linelength); | |
1668 | } | |
1669 | ||
1670 | p = linebuffer; | |
1671 | ||
1672 | /* Control-C quits instantly if typed while in this loop | |
1673 | since it should not wait until the user types a newline. */ | |
1674 | immediate_quit++; | |
1675 | #ifdef STOP_SIGNAL | |
c307bb11 JK |
1676 | if (job_control) |
1677 | signal (STOP_SIGNAL, stop_sig); | |
bd5635a1 RP |
1678 | #endif |
1679 | ||
1680 | while (1) | |
1681 | { | |
e522fb52 JG |
1682 | /* Reports are that some Sys V's don't flush stdout/err on reads |
1683 | from stdin, when stdin/out are sockets rather than ttys. So we | |
1684 | have to do it ourselves, to make emacs-gdb and xxgdb work. | |
1685 | On other machines, doing this once per input should be a cheap nop. */ | |
1686 | fflush (stdout); | |
1687 | fflush (stderr); | |
1688 | ||
bd5635a1 RP |
1689 | /* Don't use fancy stuff if not talking to stdin. */ |
1690 | if (command_editing_p && instream == stdin | |
1691 | && ISATTY (instream)) | |
1692 | rl = readline (local_prompt); | |
1693 | else | |
bdbd5f50 | 1694 | rl = gdb_readline (local_prompt); |
bd5635a1 RP |
1695 | |
1696 | if (!rl || rl == (char *) EOF) | |
1697 | { | |
1698 | got_eof = 1; | |
1699 | break; | |
1700 | } | |
1701 | if (strlen(rl) + 1 + (p - linebuffer) > linelength) | |
1702 | { | |
1703 | linelength = strlen(rl) + 1 + (p - linebuffer); | |
1704 | nline = (char *) xrealloc (linebuffer, linelength); | |
1705 | p += nline - linebuffer; | |
1706 | linebuffer = nline; | |
1707 | } | |
1708 | p1 = rl; | |
1709 | /* Copy line. Don't copy null at end. (Leaves line alone | |
1710 | if this was just a newline) */ | |
1711 | while (*p1) | |
1712 | *p++ = *p1++; | |
1713 | ||
1714 | free (rl); /* Allocated in readline. */ | |
1715 | ||
1716 | if (p == linebuffer || *(p - 1) != '\\') | |
1717 | break; | |
1718 | ||
1719 | p--; /* Put on top of '\'. */ | |
1720 | local_prompt = (char *) 0; | |
1721 | } | |
1722 | ||
1723 | #ifdef STOP_SIGNAL | |
c307bb11 JK |
1724 | if (job_control) |
1725 | signal (STOP_SIGNAL, SIG_DFL); | |
bd5635a1 RP |
1726 | #endif |
1727 | immediate_quit--; | |
1728 | ||
1729 | if (got_eof) | |
1730 | return NULL; | |
1731 | ||
1732 | /* Do history expansion if that is wished. */ | |
1733 | if (history_expansion_p && instream == stdin | |
1734 | && ISATTY (instream)) | |
1735 | { | |
1736 | char *history_value; | |
1737 | int expanded; | |
1738 | ||
1739 | *p = '\0'; /* Insert null now. */ | |
1740 | expanded = history_expand (linebuffer, &history_value); | |
1741 | if (expanded) | |
1742 | { | |
1743 | /* Print the changes. */ | |
597dc86b | 1744 | printf ("%s\n", history_value); |
bd5635a1 RP |
1745 | |
1746 | /* If there was an error, call this function again. */ | |
1747 | if (expanded < 0) | |
1748 | { | |
1749 | free (history_value); | |
1750 | return command_line_input (prrompt, repeat); | |
1751 | } | |
1752 | if (strlen (history_value) > linelength) | |
1753 | { | |
1754 | linelength = strlen (history_value) + 1; | |
1755 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
1756 | } | |
1757 | strcpy (linebuffer, history_value); | |
1758 | p = linebuffer + strlen(linebuffer); | |
1759 | free (history_value); | |
1760 | } | |
1761 | } | |
1762 | ||
1763 | /* If we just got an empty line, and that is supposed | |
1764 | to repeat the previous command, return the value in the | |
1765 | global buffer. */ | |
1766 | if (repeat) | |
1767 | { | |
1768 | if (p == linebuffer) | |
1769 | return line; | |
1770 | p1 = linebuffer; | |
1771 | while (*p1 == ' ' || *p1 == '\t') | |
1772 | p1++; | |
1773 | if (!*p1) | |
1774 | return line; | |
1775 | } | |
1776 | ||
1777 | *p = 0; | |
1778 | ||
1779 | /* Add line to history if appropriate. */ | |
1780 | if (instream == stdin | |
1781 | && ISATTY (stdin) && *linebuffer) | |
1782 | add_history (linebuffer); | |
1783 | ||
1784 | /* Note: lines consisting soley of comments are added to the command | |
1785 | history. This is useful when you type a command, and then | |
1786 | realize you don't want to execute it quite yet. You can comment | |
1787 | out the command and then later fetch it from the value history | |
1788 | and remove the '#'. The kill ring is probably better, but some | |
1789 | people are in the habit of commenting things out. */ | |
1790 | p1 = linebuffer; | |
1791 | while ((c = *p1++) != '\0') | |
1792 | { | |
1793 | if (c == '"') | |
1794 | while ((c = *p1++) != '"') | |
1795 | { | |
1796 | /* Make sure an escaped '"' doesn't make us think the string | |
1797 | is ended. */ | |
1798 | if (c == '\\') | |
1799 | parse_escape (&p1); | |
1800 | if (c == '\0') | |
1801 | break; | |
1802 | } | |
1803 | else if (c == '\'') | |
1804 | while ((c = *p1++) != '\'') | |
1805 | { | |
1806 | /* Make sure an escaped '\'' doesn't make us think the string | |
1807 | is ended. */ | |
1808 | if (c == '\\') | |
1809 | parse_escape (&p1); | |
1810 | if (c == '\0') | |
1811 | break; | |
1812 | } | |
1813 | else if (c == '#') | |
1814 | { | |
1815 | /* Found a comment. */ | |
1816 | p1[-1] = '\0'; | |
1817 | break; | |
1818 | } | |
1819 | } | |
1820 | ||
1821 | /* Save into global buffer if appropriate. */ | |
1822 | if (repeat) | |
1823 | { | |
1824 | if (linelength > linesize) | |
1825 | { | |
1826 | line = xrealloc (line, linelength); | |
1827 | linesize = linelength; | |
1828 | } | |
1829 | strcpy (line, linebuffer); | |
1830 | return line; | |
1831 | } | |
1832 | ||
1833 | return linebuffer; | |
1834 | } | |
1835 | \f | |
1836 | /* Read lines from the input stream | |
1837 | and accumulate them in a chain of struct command_line's | |
1838 | which is then returned. */ | |
1839 | ||
1840 | struct command_line * | |
1841 | read_command_lines () | |
1842 | { | |
1843 | struct command_line *first = 0; | |
1844 | register struct command_line *next, *tail = 0; | |
1845 | register char *p, *p1; | |
1846 | struct cleanup *old_chain = 0; | |
1847 | ||
1848 | while (1) | |
1849 | { | |
1850 | dont_repeat (); | |
30875e1c | 1851 | p = command_line_input ((char *) NULL, instream == stdin); |
bd5635a1 RP |
1852 | if (p == NULL) |
1853 | /* Treat end of file like "end". */ | |
1854 | break; | |
1855 | ||
1856 | /* Remove leading and trailing blanks. */ | |
1857 | while (*p == ' ' || *p == '\t') p++; | |
1858 | p1 = p + strlen (p); | |
1859 | while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) p1--; | |
1860 | ||
1861 | /* Is this "end"? */ | |
1862 | if (p1 - p == 3 && !strncmp (p, "end", 3)) | |
1863 | break; | |
1864 | ||
1865 | /* No => add this line to the chain of command lines. */ | |
1866 | next = (struct command_line *) xmalloc (sizeof (struct command_line)); | |
1867 | next->line = savestring (p, p1 - p); | |
1868 | next->next = 0; | |
1869 | if (tail) | |
1870 | { | |
1871 | tail->next = next; | |
1872 | } | |
1873 | else | |
1874 | { | |
1875 | /* We just read the first line. | |
1876 | From now on, arrange to throw away the lines we have | |
1877 | if we quit or get an error while inside this function. */ | |
1878 | first = next; | |
1879 | old_chain = make_cleanup (free_command_lines, &first); | |
1880 | } | |
1881 | tail = next; | |
1882 | } | |
1883 | ||
1884 | dont_repeat (); | |
1885 | ||
1886 | /* Now we are about to return the chain to our caller, | |
1887 | so freeing it becomes his responsibility. */ | |
1888 | if (first) | |
1889 | discard_cleanups (old_chain); | |
1890 | return first; | |
1891 | } | |
1892 | ||
1893 | /* Free a chain of struct command_line's. */ | |
1894 | ||
1895 | void | |
1896 | free_command_lines (lptr) | |
1897 | struct command_line **lptr; | |
1898 | { | |
1899 | register struct command_line *l = *lptr; | |
1900 | register struct command_line *next; | |
1901 | ||
1902 | while (l) | |
1903 | { | |
1904 | next = l->next; | |
1905 | free (l->line); | |
51b57ded | 1906 | free ((PTR)l); |
bd5635a1 RP |
1907 | l = next; |
1908 | } | |
1909 | } | |
1910 | \f | |
1911 | /* Add an element to the list of info subcommands. */ | |
1912 | ||
1913 | void | |
1914 | add_info (name, fun, doc) | |
1915 | char *name; | |
30875e1c | 1916 | void (*fun) PARAMS ((char *, int)); |
bd5635a1 RP |
1917 | char *doc; |
1918 | { | |
1919 | add_cmd (name, no_class, fun, doc, &infolist); | |
1920 | } | |
1921 | ||
1922 | /* Add an alias to the list of info subcommands. */ | |
1923 | ||
1924 | void | |
1925 | add_info_alias (name, oldname, abbrev_flag) | |
1926 | char *name; | |
1927 | char *oldname; | |
1928 | int abbrev_flag; | |
1929 | { | |
1930 | add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
1931 | } | |
1932 | ||
1933 | /* The "info" command is defined as a prefix, with allow_unknown = 0. | |
1934 | Therefore, its own definition is called only for "info" with no args. */ | |
1935 | ||
1936 | /* ARGSUSED */ | |
1937 | static void | |
1938 | info_command (arg, from_tty) | |
1939 | char *arg; | |
1940 | int from_tty; | |
1941 | { | |
597dc86b | 1942 | printf ("\"info\" must be followed by the name of an info command.\n"); |
bd5635a1 RP |
1943 | help_list (infolist, "info ", -1, stdout); |
1944 | } | |
1945 | ||
1946 | /* The "show" command with no arguments shows all the settings. */ | |
1947 | ||
1948 | /* ARGSUSED */ | |
1949 | static void | |
1950 | show_command (arg, from_tty) | |
1951 | char *arg; | |
1952 | int from_tty; | |
1953 | { | |
1954 | cmd_show_list (showlist, from_tty, ""); | |
1955 | } | |
1956 | \f | |
1957 | /* Add an element to the list of commands. */ | |
1958 | ||
1959 | void | |
1960 | add_com (name, class, fun, doc) | |
1961 | char *name; | |
1962 | enum command_class class; | |
30875e1c | 1963 | void (*fun) PARAMS ((char *, int)); |
bd5635a1 RP |
1964 | char *doc; |
1965 | { | |
1966 | add_cmd (name, class, fun, doc, &cmdlist); | |
1967 | } | |
1968 | ||
1969 | /* Add an alias or abbreviation command to the list of commands. */ | |
1970 | ||
1971 | void | |
1972 | add_com_alias (name, oldname, class, abbrev_flag) | |
1973 | char *name; | |
1974 | char *oldname; | |
1975 | enum command_class class; | |
1976 | int abbrev_flag; | |
1977 | { | |
1978 | add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
1979 | } | |
1980 | ||
1981 | void | |
1982 | error_no_arg (why) | |
1983 | char *why; | |
1984 | { | |
1985 | error ("Argument required (%s).", why); | |
1986 | } | |
1987 | ||
e1ce8aa5 | 1988 | /* ARGSUSED */ |
bd5635a1 RP |
1989 | static void |
1990 | help_command (command, from_tty) | |
1991 | char *command; | |
1992 | int from_tty; /* Ignored */ | |
1993 | { | |
1994 | help_cmd (command, stdout); | |
1995 | } | |
1996 | \f | |
1997 | static void | |
1998 | validate_comname (comname) | |
1999 | char *comname; | |
2000 | { | |
2001 | register char *p; | |
2002 | ||
2003 | if (comname == 0) | |
2004 | error_no_arg ("name of command to define"); | |
2005 | ||
2006 | p = comname; | |
2007 | while (*p) | |
2008 | { | |
c2e4669f | 2009 | if (!isalnum(*p) && *p != '-') |
bd5635a1 RP |
2010 | error ("Junk in argument list: \"%s\"", p); |
2011 | p++; | |
2012 | } | |
2013 | } | |
2014 | ||
51b57ded FF |
2015 | /* This is just a placeholder in the command data structures. */ |
2016 | static void | |
2017 | user_defined_command (ignore, from_tty) | |
2018 | char *ignore; | |
2019 | int from_tty; | |
2020 | { | |
2021 | } | |
2022 | ||
bd5635a1 RP |
2023 | static void |
2024 | define_command (comname, from_tty) | |
2025 | char *comname; | |
2026 | int from_tty; | |
2027 | { | |
2028 | register struct command_line *cmds; | |
fb29d681 | 2029 | register struct cmd_list_element *c, *newc, *hookc = 0; |
bd5635a1 | 2030 | char *tem = comname; |
b5af69c3 JG |
2031 | #define HOOK_STRING "hook-" |
2032 | #define HOOK_LEN 5 | |
bd5635a1 RP |
2033 | |
2034 | validate_comname (comname); | |
2035 | ||
afe4ca15 | 2036 | /* Look it up, and verify that we got an exact match. */ |
bd5635a1 | 2037 | c = lookup_cmd (&tem, cmdlist, "", -1, 1); |
2e4964ad | 2038 | if (c && !STREQ (comname, c->name)) |
afe4ca15 JG |
2039 | c = 0; |
2040 | ||
bd5635a1 RP |
2041 | if (c) |
2042 | { | |
2043 | if (c->class == class_user || c->class == class_alias) | |
2044 | tem = "Redefine command \"%s\"? "; | |
2045 | else | |
2046 | tem = "Really redefine built-in command \"%s\"? "; | |
c2e4669f JG |
2047 | if (!query (tem, c->name)) |
2048 | error ("Command \"%s\" not redefined.", c->name); | |
bd5635a1 RP |
2049 | } |
2050 | ||
b5af69c3 JG |
2051 | /* If this new command is a hook, then mark the command which it |
2052 | is hooking. Note that we allow hooking `help' commands, so that | |
2053 | we can hook the `stop' pseudo-command. */ | |
2054 | ||
2055 | if (!strncmp (comname, HOOK_STRING, HOOK_LEN)) | |
2056 | { | |
2057 | /* Look up cmd it hooks, and verify that we got an exact match. */ | |
2058 | tem = comname+HOOK_LEN; | |
2059 | hookc = lookup_cmd (&tem, cmdlist, "", -1, 0); | |
2e4964ad | 2060 | if (hookc && !STREQ (comname+HOOK_LEN, hookc->name)) |
b5af69c3 JG |
2061 | hookc = 0; |
2062 | if (!hookc) | |
2063 | { | |
2064 | warning ("Your new `%s' command does not hook any existing command.", | |
2065 | comname); | |
2066 | if (!query ("Proceed? ", (char *)0)) | |
2067 | error ("Not confirmed."); | |
2068 | } | |
2069 | } | |
2070 | ||
c2e4669f JG |
2071 | comname = savestring (comname, strlen (comname)); |
2072 | ||
b5af69c3 | 2073 | /* If the rest of the commands will be case insensitive, this one |
c2e4669f JG |
2074 | should behave in the same manner. */ |
2075 | for (tem = comname; *tem; tem++) | |
2076 | if (isupper(*tem)) *tem = tolower(*tem); | |
2077 | ||
bd5635a1 RP |
2078 | if (from_tty) |
2079 | { | |
597dc86b | 2080 | printf ("Type commands for definition of \"%s\".\n\ |
bd5635a1 RP |
2081 | End with a line saying just \"end\".\n", comname); |
2082 | fflush (stdout); | |
2083 | } | |
bd5635a1 RP |
2084 | |
2085 | cmds = read_command_lines (); | |
2086 | ||
2087 | if (c && c->class == class_user) | |
2088 | free_command_lines (&c->user_commands); | |
2089 | ||
51b57ded | 2090 | newc = add_cmd (comname, class_user, user_defined_command, |
bd5635a1 RP |
2091 | (c && c->class == class_user) |
2092 | ? c->doc : savestring ("User-defined.", 13), &cmdlist); | |
2093 | newc->user_commands = cmds; | |
b5af69c3 JG |
2094 | |
2095 | /* If this new command is a hook, then mark both commands as being | |
2096 | tied. */ | |
2097 | if (hookc) | |
2098 | { | |
2099 | hookc->hook = newc; /* Target gets hooked. */ | |
2100 | newc->hookee = hookc; /* We are marked as hooking target cmd. */ | |
2101 | } | |
bd5635a1 RP |
2102 | } |
2103 | ||
2104 | static void | |
2105 | document_command (comname, from_tty) | |
2106 | char *comname; | |
2107 | int from_tty; | |
2108 | { | |
2109 | struct command_line *doclines; | |
2110 | register struct cmd_list_element *c; | |
2111 | char *tem = comname; | |
2112 | ||
2113 | validate_comname (comname); | |
2114 | ||
2115 | c = lookup_cmd (&tem, cmdlist, "", 0, 1); | |
2116 | ||
2117 | if (c->class != class_user) | |
2118 | error ("Command \"%s\" is built-in.", comname); | |
2119 | ||
2120 | if (from_tty) | |
597dc86b | 2121 | printf ("Type documentation for \"%s\".\n\ |
bd5635a1 RP |
2122 | End with a line saying just \"end\".\n", comname); |
2123 | ||
2124 | doclines = read_command_lines (); | |
2125 | ||
2126 | if (c->doc) free (c->doc); | |
2127 | ||
2128 | { | |
2129 | register struct command_line *cl1; | |
2130 | register int len = 0; | |
2131 | ||
2132 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2133 | len += strlen (cl1->line) + 1; | |
2134 | ||
2135 | c->doc = (char *) xmalloc (len + 1); | |
2136 | *c->doc = 0; | |
2137 | ||
2138 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2139 | { | |
2140 | strcat (c->doc, cl1->line); | |
2141 | if (cl1->next) | |
2142 | strcat (c->doc, "\n"); | |
2143 | } | |
2144 | } | |
2145 | ||
2146 | free_command_lines (&doclines); | |
2147 | } | |
2148 | \f | |
2149 | static void | |
81066208 | 2150 | print_gnu_advertisement() |
bd5635a1 | 2151 | { |
597dc86b | 2152 | printf ("\ |
bd5635a1 | 2153 | GDB is free software and you are welcome to distribute copies of it\n\ |
afe4ca15 JG |
2154 | under certain conditions; type \"show copying\" to see the conditions.\n\ |
2155 | There is absolutely no warranty for GDB; type \"show warranty\" for details.\n\ | |
81066208 JG |
2156 | "); |
2157 | } | |
2158 | ||
2159 | static void | |
fb29d681 JG |
2160 | print_gdb_version (stream) |
2161 | FILE *stream; | |
81066208 | 2162 | { |
fb29d681 | 2163 | fprintf_filtered (stream, "\ |
57cb418a RP |
2164 | GDB %s (%s", version, host_canonical); |
2165 | ||
2166 | if (strcmp(host_canonical, target_canonical)) | |
2167 | fprintf_filtered (stream, " --target %s", target_canonical); | |
2168 | ||
2169 | fprintf_filtered (stream, "), "); | |
2170 | wrap_here(""); | |
2171 | fprintf_filtered (stream, "Copyright 1993 Free Software Foundation, Inc."); | |
bd5635a1 RP |
2172 | } |
2173 | ||
e1ce8aa5 | 2174 | /* ARGSUSED */ |
bd5635a1 | 2175 | static void |
f266e564 | 2176 | show_version (args, from_tty) |
bd5635a1 RP |
2177 | char *args; |
2178 | int from_tty; | |
2179 | { | |
2180 | immediate_quit++; | |
81066208 | 2181 | print_gnu_advertisement (); |
fb29d681 | 2182 | print_gdb_version (stdout); |
81066208 | 2183 | printf_filtered ("\n"); |
bd5635a1 RP |
2184 | immediate_quit--; |
2185 | } | |
2186 | \f | |
2187 | /* xgdb calls this to reprint the usual GDB prompt. */ | |
2188 | ||
2189 | void | |
2190 | print_prompt () | |
2191 | { | |
597dc86b | 2192 | printf ("%s", prompt); |
bd5635a1 RP |
2193 | fflush (stdout); |
2194 | } | |
2195 | \f | |
2196 | static void | |
2197 | quit_command (args, from_tty) | |
2198 | char *args; | |
2199 | int from_tty; | |
2200 | { | |
f266e564 | 2201 | if (inferior_pid != 0 && target_has_execution) |
bd5635a1 | 2202 | { |
6fe90fc8 | 2203 | if (attach_flag) |
bd5635a1 | 2204 | { |
6fe90fc8 | 2205 | if (query ("The program is running. Quit anyway (and detach it)? ")) |
597dc86b SG |
2206 | target_detach (args, from_tty); |
2207 | else | |
6fe90fc8 | 2208 | error ("Not confirmed."); |
bd5635a1 RP |
2209 | } |
2210 | else | |
6fe90fc8 JK |
2211 | { |
2212 | if (query ("The program is running. Quit anyway (and kill it)? ")) | |
2213 | target_kill (); | |
2214 | else | |
2215 | error ("Not confirmed."); | |
2216 | } | |
bd5635a1 RP |
2217 | } |
2218 | /* Save the history information if it is appropriate to do so. */ | |
2219 | if (write_history_p && history_filename) | |
2220 | write_history (history_filename); | |
2221 | exit (0); | |
2222 | } | |
2223 | ||
ee0613d1 JG |
2224 | /* Returns whether GDB is running on a terminal and whether the user |
2225 | desires that questions be asked of them on that terminal. */ | |
2226 | ||
bd5635a1 RP |
2227 | int |
2228 | input_from_terminal_p () | |
2229 | { | |
c307bb11 | 2230 | return gdb_has_a_terminal () && (instream == stdin) & caution; |
bd5635a1 RP |
2231 | } |
2232 | \f | |
e1ce8aa5 | 2233 | /* ARGSUSED */ |
bd5635a1 RP |
2234 | static void |
2235 | pwd_command (args, from_tty) | |
2236 | char *args; | |
2237 | int from_tty; | |
2238 | { | |
2239 | if (args) error ("The \"pwd\" command does not take an argument: %s", args); | |
f7402c04 | 2240 | getcwd (dirbuf, sizeof (dirbuf)); |
bd5635a1 | 2241 | |
2e4964ad | 2242 | if (!STREQ (dirbuf, current_directory)) |
597dc86b | 2243 | printf ("Working directory %s\n (canonically %s).\n", |
bd5635a1 RP |
2244 | current_directory, dirbuf); |
2245 | else | |
597dc86b | 2246 | printf ("Working directory %s.\n", current_directory); |
bd5635a1 RP |
2247 | } |
2248 | ||
2249 | static void | |
2250 | cd_command (dir, from_tty) | |
2251 | char *dir; | |
2252 | int from_tty; | |
2253 | { | |
2254 | int len; | |
c307bb11 JK |
2255 | /* Found something other than leading repetitions of "/..". */ |
2256 | int found_real_path; | |
2257 | char *p; | |
bd5635a1 | 2258 | |
9107291d JK |
2259 | /* If the new directory is absolute, repeat is a no-op; if relative, |
2260 | repeat might be useful but is more likely to be a mistake. */ | |
2261 | dont_repeat (); | |
2262 | ||
bd5635a1 RP |
2263 | if (dir == 0) |
2264 | error_no_arg ("new working directory"); | |
2265 | ||
2266 | dir = tilde_expand (dir); | |
2267 | make_cleanup (free, dir); | |
2268 | ||
ee0613d1 JG |
2269 | if (chdir (dir) < 0) |
2270 | perror_with_name (dir); | |
2271 | ||
bd5635a1 RP |
2272 | len = strlen (dir); |
2273 | dir = savestring (dir, len - (len > 1 && dir[len-1] == '/')); | |
2274 | if (dir[0] == '/') | |
2275 | current_directory = dir; | |
2276 | else | |
2277 | { | |
c307bb11 JK |
2278 | if (current_directory[0] == '/' && current_directory[1] == '\0') |
2279 | current_directory = concat (current_directory, dir, NULL); | |
2280 | else | |
2281 | current_directory = concat (current_directory, "/", dir, NULL); | |
bd5635a1 RP |
2282 | free (dir); |
2283 | } | |
2284 | ||
2285 | /* Now simplify any occurrences of `.' and `..' in the pathname. */ | |
2286 | ||
c307bb11 JK |
2287 | found_real_path = 0; |
2288 | for (p = current_directory; *p;) | |
bd5635a1 | 2289 | { |
c307bb11 JK |
2290 | if (p[0] == '/' && p[1] == '.' && (p[2] == 0 || p[2] == '/')) |
2291 | strcpy (p, p + 2); | |
2292 | else if (p[0] == '/' && p[1] == '.' && p[2] == '.' | |
2293 | && (p[3] == 0 || p[3] == '/')) | |
bd5635a1 | 2294 | { |
c307bb11 | 2295 | if (found_real_path) |
bd5635a1 | 2296 | { |
c307bb11 JK |
2297 | /* Search backwards for the directory just before the "/.." |
2298 | and obliterate it and the "/..". */ | |
bd5635a1 | 2299 | char *q = p; |
c307bb11 JK |
2300 | while (q != current_directory && q[-1] != '/') |
2301 | --q; | |
2302 | ||
2303 | if (q == current_directory) | |
2304 | /* current_directory is | |
2305 | a relative pathname ("can't happen"--leave it alone). */ | |
2306 | ++p; | |
2307 | else | |
bd5635a1 | 2308 | { |
c307bb11 JK |
2309 | strcpy (q - 1, p + 3); |
2310 | p = q - 1; | |
bd5635a1 RP |
2311 | } |
2312 | } | |
c307bb11 JK |
2313 | else |
2314 | /* We are dealing with leading repetitions of "/..", for example | |
2315 | "/../..", which is the Mach super-root. */ | |
2316 | p += 3; | |
2317 | } | |
2318 | else | |
2319 | { | |
2320 | found_real_path = 1; | |
2321 | ++p; | |
bd5635a1 RP |
2322 | } |
2323 | } | |
2324 | ||
bd5635a1 RP |
2325 | forget_cached_source_info (); |
2326 | ||
2327 | if (from_tty) | |
2328 | pwd_command ((char *) 0, 1); | |
2329 | } | |
2330 | \f | |
e1ce8aa5 | 2331 | /* ARGSUSED */ |
bd5635a1 RP |
2332 | static void |
2333 | source_command (args, from_tty) | |
2334 | char *args; | |
2335 | int from_tty; | |
2336 | { | |
2337 | FILE *stream; | |
2338 | struct cleanup *cleanups; | |
2339 | char *file = args; | |
2340 | ||
6fe90fc8 JK |
2341 | if (file == NULL) |
2342 | { | |
2343 | error ("source command requires pathname of file to source."); | |
2344 | } | |
bd5635a1 RP |
2345 | |
2346 | file = tilde_expand (file); | |
2347 | make_cleanup (free, file); | |
2348 | ||
6fe90fc8 | 2349 | stream = fopen (file, FOPEN_RT); |
bd5635a1 RP |
2350 | if (stream == 0) |
2351 | perror_with_name (file); | |
2352 | ||
2353 | cleanups = make_cleanup (fclose, stream); | |
2354 | ||
2355 | read_command_file (stream); | |
2356 | ||
2357 | do_cleanups (cleanups); | |
2358 | } | |
2359 | ||
2360 | /* ARGSUSED */ | |
2361 | static void | |
2362 | echo_command (text, from_tty) | |
2363 | char *text; | |
2364 | int from_tty; | |
2365 | { | |
2366 | char *p = text; | |
2367 | register int c; | |
2368 | ||
2369 | if (text) | |
a8a69e63 | 2370 | while ((c = *p++) != '\0') |
bd5635a1 RP |
2371 | { |
2372 | if (c == '\\') | |
2373 | { | |
2374 | /* \ at end of argument is used after spaces | |
2375 | so they won't be lost. */ | |
2376 | if (*p == 0) | |
2377 | return; | |
2378 | ||
2379 | c = parse_escape (&p); | |
2380 | if (c >= 0) | |
afe4ca15 | 2381 | printf_filtered ("%c", c); |
bd5635a1 RP |
2382 | } |
2383 | else | |
afe4ca15 | 2384 | printf_filtered ("%c", c); |
bd5635a1 | 2385 | } |
afe4ca15 JG |
2386 | |
2387 | /* Force this output to appear now. */ | |
2388 | wrap_here (""); | |
f266e564 | 2389 | fflush (stdout); |
bd5635a1 RP |
2390 | } |
2391 | ||
bd5635a1 RP |
2392 | \f |
2393 | /* Functions to manipulate command line editing control variables. */ | |
2394 | ||
f266e564 | 2395 | /* Number of commands to print in each call to show_commands. */ |
bd5635a1 RP |
2396 | #define Hist_print 10 |
2397 | static void | |
f266e564 | 2398 | show_commands (args, from_tty) |
bd5635a1 RP |
2399 | char *args; |
2400 | int from_tty; | |
2401 | { | |
2402 | /* Index for history commands. Relative to history_base. */ | |
2403 | int offset; | |
2404 | ||
2405 | /* Number of the history entry which we are planning to display next. | |
2406 | Relative to history_base. */ | |
2407 | static int num = 0; | |
2408 | ||
2409 | /* The first command in the history which doesn't exist (i.e. one more | |
2410 | than the number of the last command). Relative to history_base. */ | |
2411 | int hist_len; | |
2412 | ||
30875e1c | 2413 | extern struct _hist_entry *history_get PARAMS ((int)); |
bd5635a1 RP |
2414 | extern int history_base; |
2415 | ||
bd5635a1 RP |
2416 | /* Print out some of the commands from the command history. */ |
2417 | /* First determine the length of the history list. */ | |
2418 | hist_len = history_size; | |
2419 | for (offset = 0; offset < history_size; offset++) | |
2420 | { | |
2421 | if (!history_get (history_base + offset)) | |
2422 | { | |
2423 | hist_len = offset; | |
2424 | break; | |
2425 | } | |
2426 | } | |
2427 | ||
2428 | if (args) | |
2429 | { | |
2430 | if (args[0] == '+' && args[1] == '\0') | |
2431 | /* "info editing +" should print from the stored position. */ | |
2432 | ; | |
2433 | else | |
2434 | /* "info editing <exp>" should print around command number <exp>. */ | |
2435 | num = (parse_and_eval_address (args) - history_base) - Hist_print / 2; | |
2436 | } | |
ee0613d1 | 2437 | /* "show commands" means print the last Hist_print commands. */ |
bd5635a1 RP |
2438 | else |
2439 | { | |
2440 | num = hist_len - Hist_print; | |
2441 | } | |
2442 | ||
2443 | if (num < 0) | |
2444 | num = 0; | |
2445 | ||
2446 | /* If there are at least Hist_print commands, we want to display the last | |
2447 | Hist_print rather than, say, the last 6. */ | |
2448 | if (hist_len - num < Hist_print) | |
2449 | { | |
2450 | num = hist_len - Hist_print; | |
2451 | if (num < 0) | |
2452 | num = 0; | |
2453 | } | |
2454 | ||
bd5635a1 RP |
2455 | for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) |
2456 | { | |
2457 | printf_filtered ("%5d %s\n", history_base + offset, | |
2458 | (history_get (history_base + offset))->line); | |
2459 | } | |
2460 | ||
2461 | /* The next command we want to display is the next one that we haven't | |
2462 | displayed yet. */ | |
2463 | num += Hist_print; | |
2464 | ||
2465 | /* If the user repeats this command with return, it should do what | |
ee0613d1 JG |
2466 | "show commands +" does. This is unnecessary if arg is null, |
2467 | because "show commands +" is not useful after "show commands". */ | |
bd5635a1 RP |
2468 | if (from_tty && args) |
2469 | { | |
2470 | args[0] = '+'; | |
2471 | args[1] = '\0'; | |
2472 | } | |
2473 | } | |
2474 | ||
2475 | /* Called by do_setshow_command. */ | |
e1ce8aa5 | 2476 | /* ARGSUSED */ |
bd5635a1 RP |
2477 | static void |
2478 | set_history_size_command (args, from_tty, c) | |
2479 | char *args; | |
2480 | int from_tty; | |
2481 | struct cmd_list_element *c; | |
2482 | { | |
6fe90fc8 | 2483 | if (history_size == INT_MAX) |
bd5635a1 | 2484 | unstifle_history (); |
c2e4669f | 2485 | else if (history_size >= 0) |
bd5635a1 | 2486 | stifle_history (history_size); |
c2e4669f JG |
2487 | else |
2488 | { | |
6fe90fc8 | 2489 | history_size = INT_MAX; |
c2e4669f JG |
2490 | error ("History size must be non-negative"); |
2491 | } | |
bd5635a1 RP |
2492 | } |
2493 | ||
e1ce8aa5 | 2494 | /* ARGSUSED */ |
bd5635a1 RP |
2495 | static void |
2496 | set_history (args, from_tty) | |
2497 | char *args; | |
2498 | int from_tty; | |
2499 | { | |
597dc86b | 2500 | printf ("\"set history\" must be followed by the name of a history subcommand.\n"); |
bd5635a1 RP |
2501 | help_list (sethistlist, "set history ", -1, stdout); |
2502 | } | |
2503 | ||
e1ce8aa5 | 2504 | /* ARGSUSED */ |
bd5635a1 RP |
2505 | static void |
2506 | show_history (args, from_tty) | |
2507 | char *args; | |
2508 | int from_tty; | |
2509 | { | |
f266e564 | 2510 | cmd_show_list (showhistlist, from_tty, ""); |
bd5635a1 RP |
2511 | } |
2512 | ||
2513 | int info_verbose = 0; /* Default verbose msgs off */ | |
2514 | ||
2515 | /* Called by do_setshow_command. An elaborate joke. */ | |
e1ce8aa5 | 2516 | /* ARGSUSED */ |
bd5635a1 RP |
2517 | static void |
2518 | set_verbose (args, from_tty, c) | |
2519 | char *args; | |
2520 | int from_tty; | |
2521 | struct cmd_list_element *c; | |
2522 | { | |
2523 | char *cmdname = "verbose"; | |
2524 | struct cmd_list_element *showcmd; | |
2525 | ||
2526 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
2527 | ||
2528 | if (info_verbose) | |
2529 | { | |
2530 | c->doc = "Set verbose printing of informational messages."; | |
2531 | showcmd->doc = "Show verbose printing of informational messages."; | |
2532 | } | |
2533 | else | |
2534 | { | |
2535 | c->doc = "Set verbosity."; | |
2536 | showcmd->doc = "Show verbosity."; | |
2537 | } | |
2538 | } | |
2539 | ||
2540 | static void | |
30875e1c SG |
2541 | float_handler (signo) |
2542 | int signo; | |
bd5635a1 RP |
2543 | { |
2544 | /* This message is based on ANSI C, section 4.7. Note that integer | |
2545 | divide by zero causes this, so "float" is a misnomer. */ | |
76a0ffb4 | 2546 | signal (SIGFPE, float_handler); |
bd5635a1 RP |
2547 | error ("Erroneous arithmetic operation."); |
2548 | } | |
2549 | ||
2550 | /* Return whether we are running a batch file or from terminal. */ | |
2551 | int | |
2552 | batch_mode () | |
2553 | { | |
2554 | return !(instream == stdin && ISATTY (stdin)); | |
2555 | } | |
2556 | ||
2557 | \f | |
2558 | static void | |
fc61e9ee | 2559 | init_cmd_lists () |
bd5635a1 | 2560 | { |
0239d9b3 FF |
2561 | cmdlist = NULL; |
2562 | infolist = NULL; | |
2563 | enablelist = NULL; | |
2564 | disablelist = NULL; | |
2565 | deletelist = NULL; | |
2566 | enablebreaklist = NULL; | |
2567 | setlist = NULL; | |
2568 | unsetlist = NULL; | |
bd5635a1 | 2569 | showlist = NULL; |
0239d9b3 | 2570 | sethistlist = NULL; |
bd5635a1 | 2571 | showhistlist = NULL; |
0239d9b3 FF |
2572 | unsethistlist = NULL; |
2573 | #if MAINTENANCE_CMDS | |
2574 | maintenancelist = NULL; | |
2575 | maintenanceinfolist = NULL; | |
a8e033f2 | 2576 | maintenanceprintlist = NULL; |
0239d9b3 FF |
2577 | #endif |
2578 | setprintlist = NULL; | |
2579 | showprintlist = NULL; | |
2580 | setchecklist = NULL; | |
2581 | showchecklist = NULL; | |
bd5635a1 RP |
2582 | } |
2583 | ||
8b3c897a SG |
2584 | /* Init the history buffer. Note that we are called after the init file(s) |
2585 | * have been read so that the user can change the history file via his | |
2586 | * .gdbinit file (for instance). The GDBHISTFILE environment variable | |
2587 | * overrides all of this. | |
2588 | */ | |
2589 | ||
bd5635a1 | 2590 | static void |
fc61e9ee | 2591 | init_history() |
bd5635a1 | 2592 | { |
bd5635a1 | 2593 | char *tmpenv; |
bd5635a1 | 2594 | |
318bf84f FF |
2595 | tmpenv = getenv ("HISTSIZE"); |
2596 | if (tmpenv) | |
bd5635a1 | 2597 | history_size = atoi (tmpenv); |
8b3c897a | 2598 | else if (!history_size) |
bd5635a1 RP |
2599 | history_size = 256; |
2600 | ||
2601 | stifle_history (history_size); | |
2602 | ||
318bf84f FF |
2603 | tmpenv = getenv ("GDBHISTFILE"); |
2604 | if (tmpenv) | |
bd5635a1 | 2605 | history_filename = savestring (tmpenv, strlen(tmpenv)); |
8b3c897a | 2606 | else if (!history_filename) { |
bd5635a1 RP |
2607 | /* We include the current directory so that if the user changes |
2608 | directories the file written will be the same as the one | |
2609 | that was read. */ | |
7d9884b9 | 2610 | history_filename = concat (current_directory, "/.gdb_history", NULL); |
8b3c897a | 2611 | } |
bd5635a1 | 2612 | read_history (history_filename); |
8b3c897a | 2613 | } |
bd5635a1 | 2614 | |
8b3c897a | 2615 | static void |
fc61e9ee | 2616 | init_main () |
8b3c897a SG |
2617 | { |
2618 | struct cmd_list_element *c; | |
2619 | ||
2620 | #ifdef DEFAULT_PROMPT | |
2621 | prompt = savestring (DEFAULT_PROMPT, strlen(DEFAULT_PROMPT)); | |
2622 | #else | |
2623 | prompt = savestring ("(gdb) ", 6); | |
2624 | #endif | |
2625 | ||
2626 | /* Set the important stuff up for command editing. */ | |
2627 | command_editing_p = 1; | |
2628 | history_expansion_p = 0; | |
2629 | write_history_p = 0; | |
2630 | ||
bd5635a1 RP |
2631 | /* Setup important stuff for command line editing. */ |
2632 | rl_completion_entry_function = (int (*)()) symbol_completion_function; | |
2633 | rl_completer_word_break_characters = gdb_completer_word_break_characters; | |
51b57ded | 2634 | rl_completer_quote_characters = gdb_completer_quote_characters; |
bd5635a1 RP |
2635 | rl_readline_name = "gdb"; |
2636 | ||
2637 | /* Define the classes of commands. | |
2638 | They will appear in the help list in the reverse of this order. */ | |
2639 | ||
0239d9b3 FF |
2640 | add_cmd ("internals", class_maintenance, NO_FUNCTION, |
2641 | "Maintenance commands.\n\ | |
2642 | Some gdb commands are provided just for use by gdb maintainers.\n\ | |
2643 | These commands are subject to frequent change, and may not be as\n\ | |
2644 | well documented as user commands.", | |
2645 | &cmdlist); | |
bd5635a1 RP |
2646 | add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist); |
2647 | add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist); | |
2648 | add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\ | |
2649 | The commands in this class are those defined by the user.\n\ | |
2650 | Use the \"define\" command to define a command.", &cmdlist); | |
2651 | add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist); | |
2652 | add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist); | |
2653 | add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist); | |
2654 | add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist); | |
2655 | add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist); | |
2656 | add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\ | |
2657 | The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\ | |
2658 | counting from zero for the innermost (currently executing) frame.\n\n\ | |
2659 | At any time gdb identifies one frame as the \"selected\" frame.\n\ | |
2660 | Variable lookups are done with respect to the selected frame.\n\ | |
2661 | When the program being debugged stops, gdb selects the innermost frame.\n\ | |
2662 | The commands below can be used to select other frames by number or address.", | |
2663 | &cmdlist); | |
2664 | add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist); | |
2665 | ||
2666 | add_com ("pwd", class_files, pwd_command, | |
2667 | "Print working directory. This is used for your program as well."); | |
df0f0dcc | 2668 | c = add_cmd ("cd", class_files, cd_command, |
bd5635a1 RP |
2669 | "Set working directory to DIR for debugger and program being debugged.\n\ |
2670 | The change does not take effect for the program being debugged\n\ | |
df0f0dcc JK |
2671 | until the next time it is started.", &cmdlist); |
2672 | c->completer = filename_completer; | |
bd5635a1 RP |
2673 | |
2674 | add_show_from_set | |
2675 | (add_set_cmd ("prompt", class_support, var_string, (char *)&prompt, | |
2676 | "Set gdb's prompt", | |
2677 | &setlist), | |
2678 | &showlist); | |
2679 | ||
2680 | add_com ("echo", class_support, echo_command, | |
2681 | "Print a constant string. Give string as argument.\n\ | |
2682 | C escape sequences may be used in the argument.\n\ | |
2683 | No newline is added at the end of the argument;\n\ | |
2684 | use \"\\n\" if you want a newline to be printed.\n\ | |
2685 | Since leading and trailing whitespace are ignored in command arguments,\n\ | |
2686 | if you want to print some you must use \"\\\" before leading whitespace\n\ | |
2687 | to be printed or after trailing whitespace."); | |
2688 | add_com ("document", class_support, document_command, | |
2689 | "Document a user-defined command.\n\ | |
2690 | Give command name as argument. Give documentation on following lines.\n\ | |
2691 | End with a line of just \"end\"."); | |
2692 | add_com ("define", class_support, define_command, | |
2693 | "Define a new command name. Command name is argument.\n\ | |
2694 | Definition appears on following lines, one command per line.\n\ | |
2695 | End with a line of just \"end\".\n\ | |
2696 | Use the \"document\" command to give documentation for the new command.\n\ | |
2697 | Commands defined in this way do not take arguments."); | |
2698 | ||
2699 | #ifdef __STDC__ | |
df0f0dcc | 2700 | c = add_cmd ("source", class_support, source_command, |
bd5635a1 RP |
2701 | "Read commands from a file named FILE.\n\ |
2702 | Note that the file \"" GDBINIT_FILENAME "\" is read automatically in this way\n\ | |
df0f0dcc | 2703 | when gdb is started.", &cmdlist); |
bd5635a1 RP |
2704 | #else |
2705 | /* Punt file name, we can't help it easily. */ | |
df0f0dcc | 2706 | c = add_cmd ("source", class_support, source_command, |
bd5635a1 RP |
2707 | "Read commands from a file named FILE.\n\ |
2708 | Note that the file \".gdbinit\" is read automatically in this way\n\ | |
df0f0dcc | 2709 | when gdb is started.", &cmdlist); |
bd5635a1 | 2710 | #endif |
df0f0dcc | 2711 | c->completer = filename_completer; |
bd5635a1 RP |
2712 | |
2713 | add_com ("quit", class_support, quit_command, "Exit gdb."); | |
2714 | add_com ("help", class_support, help_command, "Print list of commands."); | |
2715 | add_com_alias ("q", "quit", class_support, 1); | |
2716 | add_com_alias ("h", "help", class_support, 1); | |
2717 | ||
2718 | ||
2719 | c = add_set_cmd ("verbose", class_support, var_boolean, (char *)&info_verbose, | |
2720 | "Set ", | |
2721 | &setlist), | |
2722 | add_show_from_set (c, &showlist); | |
30875e1c | 2723 | c->function.sfunc = set_verbose; |
bd5635a1 RP |
2724 | set_verbose (NULL, 0, c); |
2725 | ||
bd5635a1 RP |
2726 | add_show_from_set |
2727 | (add_set_cmd ("editing", class_support, var_boolean, (char *)&command_editing_p, | |
ee0613d1 | 2728 | "Set editing of command lines as they are typed.\n\ |
bd5635a1 | 2729 | Use \"on\" to enable to enable the editing, and \"off\" to disable it.\n\ |
ee0613d1 JG |
2730 | Without an argument, command line editing is enabled. To edit, use\n\ |
2731 | EMACS-like or VI-like commands like control-P or ESC.", &setlist), | |
bd5635a1 RP |
2732 | &showlist); |
2733 | ||
2734 | add_prefix_cmd ("history", class_support, set_history, | |
2735 | "Generic command for setting command history parameters.", | |
2736 | &sethistlist, "set history ", 0, &setlist); | |
2737 | add_prefix_cmd ("history", class_support, show_history, | |
2738 | "Generic command for showing command history parameters.", | |
2739 | &showhistlist, "show history ", 0, &showlist); | |
2740 | ||
2741 | add_show_from_set | |
2742 | (add_set_cmd ("expansion", no_class, var_boolean, (char *)&history_expansion_p, | |
2743 | "Set history expansion on command input.\n\ | |
2744 | Without an argument, history expansion is enabled.", &sethistlist), | |
2745 | &showhistlist); | |
2746 | ||
2747 | add_show_from_set | |
f266e564 | 2748 | (add_set_cmd ("save", no_class, var_boolean, (char *)&write_history_p, |
bd5635a1 RP |
2749 | "Set saving of the history record on exit.\n\ |
2750 | Use \"on\" to enable to enable the saving, and \"off\" to disable it.\n\ | |
2751 | Without an argument, saving is enabled.", &sethistlist), | |
2752 | &showhistlist); | |
2753 | ||
6fe90fc8 | 2754 | c = add_set_cmd ("size", no_class, var_integer, (char *)&history_size, |
bd5635a1 RP |
2755 | "Set the size of the command history, \n\ |
2756 | ie. the number of previous commands to keep a record of.", &sethistlist); | |
2757 | add_show_from_set (c, &showhistlist); | |
30875e1c | 2758 | c->function.sfunc = set_history_size_command; |
bd5635a1 RP |
2759 | |
2760 | add_show_from_set | |
2761 | (add_set_cmd ("filename", no_class, var_filename, (char *)&history_filename, | |
2762 | "Set the filename in which to record the command history\n\ | |
2763 | (the list of previous commands of which a record is kept).", &sethistlist), | |
2764 | &showhistlist); | |
2765 | ||
2766 | add_show_from_set | |
f266e564 | 2767 | (add_set_cmd ("confirm", class_support, var_boolean, |
bd5635a1 | 2768 | (char *)&caution, |
f266e564 JK |
2769 | "Set whether to confirm potentially dangerous operations.", |
2770 | &setlist), | |
bd5635a1 RP |
2771 | &showlist); |
2772 | ||
2773 | add_prefix_cmd ("info", class_info, info_command, | |
ee0613d1 | 2774 | "Generic command for showing things about the program being debugged.", |
bd5635a1 RP |
2775 | &infolist, "info ", 0, &cmdlist); |
2776 | add_com_alias ("i", "info", class_info, 1); | |
2777 | ||
2778 | add_prefix_cmd ("show", class_info, show_command, | |
ee0613d1 | 2779 | "Generic command for showing things about the debugger.", |
bd5635a1 RP |
2780 | &showlist, "show ", 0, &cmdlist); |
2781 | /* Another way to get at the same thing. */ | |
2782 | add_info ("set", show_command, "Show all GDB settings."); | |
2783 | ||
ee0613d1 JG |
2784 | add_cmd ("commands", no_class, show_commands, |
2785 | "Show the the history of commands you typed.\n\ | |
2786 | You can supply a command number to start with, or a `+' to start after\n\ | |
2787 | the previous command number shown.", | |
f266e564 | 2788 | &showlist); |
bd5635a1 | 2789 | |
f266e564 | 2790 | add_cmd ("version", no_class, show_version, |
ee0613d1 | 2791 | "Show what version of GDB this is.", &showlist); |
d0d8484a SG |
2792 | |
2793 | add_show_from_set ( | |
2794 | add_set_cmd ("remotedebug", no_class, var_boolean, (char *)&remote_debug, | |
2795 | "Set debugging of remote protocol.\n\ | |
2796 | When enabled, each packet sent or received with the remote target\n\ | |
2797 | is displayed.", &setlist), | |
2798 | &showlist); | |
bd5635a1 | 2799 | } |