Commit | Line | Data |
---|---|---|
7d9884b9 | 1 | /* Top level `main' program for GDB, the GNU debugger. |
8b564df8 | 2 | Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994 |
51b57ded | 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 | |
199b2450 | 76 | print_gdb_version PARAMS ((GDB_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 | ||
a28d16d3 | 183 | extern char *host_name; |
57cb418a RP |
184 | |
185 | /* Canonical target name as a string. */ | |
186 | ||
a28d16d3 | 187 | extern char *target_name; |
57cb418a | 188 | |
bd099407 JG |
189 | extern char lang_frame_mismatch_warn[]; /* language.c */ |
190 | ||
bd5635a1 RP |
191 | /* Flag for whether we want all the "from_tty" gubbish printed. */ |
192 | ||
193 | int caution = 1; /* Default is yes, sigh. */ | |
194 | ||
195 | /* | |
196 | * Define all cmd_list_element's | |
197 | */ | |
198 | ||
199 | /* Chain containing all defined commands. */ | |
200 | ||
201 | struct cmd_list_element *cmdlist; | |
202 | ||
203 | /* Chain containing all defined info subcommands. */ | |
204 | ||
205 | struct cmd_list_element *infolist; | |
206 | ||
207 | /* Chain containing all defined enable subcommands. */ | |
208 | ||
209 | struct cmd_list_element *enablelist; | |
210 | ||
211 | /* Chain containing all defined disable subcommands. */ | |
212 | ||
213 | struct cmd_list_element *disablelist; | |
214 | ||
215 | /* Chain containing all defined delete subcommands. */ | |
216 | ||
217 | struct cmd_list_element *deletelist; | |
218 | ||
219 | /* Chain containing all defined "enable breakpoint" subcommands. */ | |
220 | ||
221 | struct cmd_list_element *enablebreaklist; | |
222 | ||
223 | /* Chain containing all defined set subcommands */ | |
224 | ||
225 | struct cmd_list_element *setlist; | |
226 | ||
0239d9b3 FF |
227 | /* Chain containing all defined unset subcommands */ |
228 | ||
229 | struct cmd_list_element *unsetlist; | |
230 | ||
bd5635a1 | 231 | /* Chain containing all defined show subcommands. */ |
0239d9b3 | 232 | |
bd5635a1 RP |
233 | struct cmd_list_element *showlist; |
234 | ||
235 | /* Chain containing all defined \"set history\". */ | |
236 | ||
237 | struct cmd_list_element *sethistlist; | |
238 | ||
239 | /* Chain containing all defined \"show history\". */ | |
0239d9b3 | 240 | |
bd5635a1 RP |
241 | struct cmd_list_element *showhistlist; |
242 | ||
243 | /* Chain containing all defined \"unset history\". */ | |
244 | ||
245 | struct cmd_list_element *unsethistlist; | |
246 | ||
0239d9b3 FF |
247 | /* Chain containing all defined maintenance subcommands. */ |
248 | ||
249 | #if MAINTENANCE_CMDS | |
250 | struct cmd_list_element *maintenancelist; | |
251 | #endif | |
252 | ||
253 | /* Chain containing all defined "maintenance info" subcommands. */ | |
254 | ||
255 | #if MAINTENANCE_CMDS | |
256 | struct cmd_list_element *maintenanceinfolist; | |
257 | #endif | |
258 | ||
a8e033f2 SG |
259 | /* Chain containing all defined "maintenance print" subcommands. */ |
260 | ||
261 | #if MAINTENANCE_CMDS | |
262 | struct cmd_list_element *maintenanceprintlist; | |
263 | #endif | |
264 | ||
0239d9b3 FF |
265 | struct cmd_list_element *setprintlist; |
266 | ||
267 | struct cmd_list_element *showprintlist; | |
268 | ||
269 | struct cmd_list_element *setchecklist; | |
270 | ||
271 | struct cmd_list_element *showchecklist; | |
272 | ||
d0d8484a SG |
273 | /* stdio stream that command input is being read from. Set to stdin normally. |
274 | Set by source_command to the file we are sourcing. Set to NULL if we are | |
275 | executing a user-defined command. */ | |
bd5635a1 RP |
276 | |
277 | FILE *instream; | |
278 | ||
279 | /* Current working directory. */ | |
280 | ||
281 | char *current_directory; | |
282 | ||
283 | /* The directory name is actually stored here (usually). */ | |
f7402c04 | 284 | static char dirbuf[1024]; |
bd5635a1 RP |
285 | |
286 | /* Function to call before reading a command, if nonzero. | |
287 | The function receives two args: an input stream, | |
288 | and a prompt string. */ | |
bd099407 | 289 | |
30875e1c | 290 | void (*window_hook) PARAMS ((FILE *, char *)); |
bd5635a1 | 291 | |
318bf84f FF |
292 | extern int mapped_symbol_files; |
293 | extern int readnow_symbol_files; | |
294 | ||
bd5635a1 RP |
295 | int epoch_interface; |
296 | int xgdb_verbose; | |
297 | ||
bd5635a1 RP |
298 | /* gdb prints this when reading a command interactively */ |
299 | static char *prompt; | |
300 | ||
301 | /* Buffer used for reading command lines, and the size | |
302 | allocated for it so far. */ | |
303 | ||
304 | char *line; | |
305 | int linesize = 100; | |
306 | ||
307 | /* Baud rate specified for talking to serial target systems. Default | |
d0d8484a | 308 | is left as -1, so targets can choose their own defaults. */ |
bd5635a1 | 309 | |
d0d8484a SG |
310 | int baud_rate = -1; |
311 | ||
312 | /* Non-zero tells remote* modules to output debugging info. */ | |
313 | ||
314 | int remote_debug = 0; | |
bd5635a1 RP |
315 | |
316 | /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */ | |
317 | ||
318 | #ifndef STOP_SIGNAL | |
319 | #ifdef SIGTSTP | |
320 | #define STOP_SIGNAL SIGTSTP | |
30875e1c | 321 | static void stop_sig PARAMS ((int)); |
bd5635a1 RP |
322 | #endif |
323 | #endif | |
d566d62a JK |
324 | |
325 | /* Some System V have job control but not sigsetmask(). */ | |
326 | #if !defined (HAVE_SIGSETMASK) | |
36464897 JK |
327 | #if !defined (USG) |
328 | #define HAVE_SIGSETMASK 1 | |
329 | #else | |
330 | #define HAVE_SIGSETMASK 0 | |
331 | #endif | |
d566d62a JK |
332 | #endif |
333 | ||
8b3c897a | 334 | #if 0 == (HAVE_SIGSETMASK) |
d566d62a JK |
335 | #define sigsetmask(n) |
336 | #endif | |
bd5635a1 | 337 | \f |
9748446f JK |
338 | /* Where to go for return_to_top_level (RETURN_ERROR). */ |
339 | static jmp_buf error_return; | |
340 | /* Where to go for return_to_top_level (RETURN_QUIT). */ | |
341 | static jmp_buf quit_return; | |
bd5635a1 | 342 | |
9748446f JK |
343 | /* Temporary variable for SET_TOP_LEVEL. */ |
344 | static int top_level_val; | |
345 | ||
346 | /* Do a setjmp on error_return and quit_return. catch_errors is | |
347 | generally a cleaner way to do this, but main() would look pretty | |
348 | ugly if it had to use catch_errors each time. */ | |
349 | ||
350 | #define SET_TOP_LEVEL() \ | |
351 | (((top_level_val = setjmp (error_return)) \ | |
352 | ? (PTR) 0 : (PTR) memcpy (quit_return, error_return, sizeof (jmp_buf))) \ | |
353 | , top_level_val) | |
354 | ||
355 | /* Return for reason REASON. This generally gets back to the command | |
356 | loop, but can be caught via catch_errors. */ | |
bd5635a1 | 357 | |
30875e1c | 358 | NORETURN void |
9748446f JK |
359 | return_to_top_level (reason) |
360 | enum return_reason reason; | |
bd5635a1 RP |
361 | { |
362 | quit_flag = 0; | |
363 | immediate_quit = 0; | |
c307bb11 JK |
364 | |
365 | /* Perhaps it would be cleaner to do this via the cleanup chain (not sure | |
366 | I can think of a reason why that is vital, though). */ | |
bd5635a1 | 367 | bpstat_clear_actions(stop_bpstat); /* Clear queued breakpoint commands */ |
c307bb11 | 368 | |
bd5635a1 | 369 | disable_current_display (); |
f266e564 | 370 | do_cleanups (ALL_CLEANUPS); |
9748446f JK |
371 | (NORETURN void) longjmp |
372 | (reason == RETURN_ERROR ? error_return : quit_return, 1); | |
bd5635a1 RP |
373 | } |
374 | ||
9748446f JK |
375 | /* Call FUNC with arg ARGS, catching any errors. If there is no |
376 | error, return the value returned by FUNC. If there is an error, | |
377 | print ERRSTRING, print the specific error message, then return | |
378 | zero. | |
379 | ||
d0d8484a SG |
380 | Must not be called with immediate_quit in effect (bad things might |
381 | happen, say we got a signal in the middle of a memcpy to quit_return). | |
382 | This is an OK restriction; with very few exceptions immediate_quit can | |
383 | be replaced by judicious use of QUIT. | |
384 | ||
9748446f JK |
385 | MASK specifies what to catch; it is normally set to |
386 | RETURN_MASK_ALL, if for no other reason than that the code which | |
387 | calls catch_errors might not be set up to deal with a quit which | |
388 | isn't caught. But if the code can deal with it, it generally | |
389 | should be RETURN_MASK_ERROR, unless for some reason it is more | |
390 | useful to abort only the portion of the operation inside the | |
391 | catch_errors. Note that quit should return to the command line | |
392 | fairly quickly, even if some further processing is being done. */ | |
bd5635a1 RP |
393 | |
394 | int | |
9748446f | 395 | catch_errors (func, args, errstring, mask) |
30875e1c | 396 | int (*func) PARAMS ((char *)); |
9748446f | 397 | PTR args; |
bd5635a1 | 398 | char *errstring; |
9748446f | 399 | return_mask mask; |
bd5635a1 | 400 | { |
9748446f JK |
401 | jmp_buf saved_error; |
402 | jmp_buf saved_quit; | |
403 | jmp_buf tmp_jmp; | |
bd5635a1 RP |
404 | int val; |
405 | struct cleanup *saved_cleanup_chain; | |
81066208 | 406 | char *saved_error_pre_print; |
bd5635a1 RP |
407 | |
408 | saved_cleanup_chain = save_cleanups (); | |
81066208 | 409 | saved_error_pre_print = error_pre_print; |
bd5635a1 | 410 | |
9748446f JK |
411 | if (mask & RETURN_MASK_ERROR) |
412 | memcpy ((char *)saved_error, (char *)error_return, sizeof (jmp_buf)); | |
413 | if (mask & RETURN_MASK_QUIT) | |
414 | memcpy (saved_quit, quit_return, sizeof (jmp_buf)); | |
81066208 | 415 | error_pre_print = errstring; |
bd5635a1 | 416 | |
9748446f JK |
417 | if (setjmp (tmp_jmp) == 0) |
418 | { | |
419 | if (mask & RETURN_MASK_ERROR) | |
420 | memcpy (error_return, tmp_jmp, sizeof (jmp_buf)); | |
421 | if (mask & RETURN_MASK_QUIT) | |
422 | memcpy (quit_return, tmp_jmp, sizeof (jmp_buf)); | |
423 | val = (*func) (args); | |
424 | } | |
bd5635a1 | 425 | else |
81066208 | 426 | val = 0; |
bd5635a1 RP |
427 | |
428 | restore_cleanups (saved_cleanup_chain); | |
429 | ||
81066208 | 430 | error_pre_print = saved_error_pre_print; |
9748446f JK |
431 | if (mask & RETURN_MASK_ERROR) |
432 | memcpy (error_return, saved_error, sizeof (jmp_buf)); | |
433 | if (mask & RETURN_MASK_QUIT) | |
434 | memcpy (quit_return, saved_quit, sizeof (jmp_buf)); | |
bd5635a1 RP |
435 | return val; |
436 | } | |
437 | ||
438 | /* Handler for SIGHUP. */ | |
439 | ||
440 | static void | |
30875e1c SG |
441 | disconnect (signo) |
442 | int signo; | |
bd5635a1 | 443 | { |
6fe90fc8 | 444 | catch_errors (quit_cover, NULL, |
9748446f | 445 | "Could not kill the program being debugged", RETURN_MASK_ALL); |
597dc86b | 446 | signal (SIGHUP, SIG_DFL); |
bd5635a1 RP |
447 | kill (getpid (), SIGHUP); |
448 | } | |
597dc86b SG |
449 | |
450 | /* Just a little helper function for disconnect(). */ | |
451 | ||
452 | static int | |
453 | quit_cover (s) | |
454 | char *s; | |
455 | { | |
456 | caution = 0; /* Throw caution to the wind -- we're exiting. | |
457 | This prevents asking the user dumb questions. */ | |
458 | quit_command((char *)0, 0); | |
459 | return 0; | |
460 | } | |
bd5635a1 | 461 | \f |
d6bbac39 JK |
462 | /* Line number we are currently in in a file which is being sourced. */ |
463 | static int source_line_number; | |
464 | ||
465 | /* Name of the file we are sourcing. */ | |
466 | static char *source_file_name; | |
467 | ||
468 | /* Buffer containing the error_pre_print used by the source stuff. | |
469 | Malloc'd. */ | |
470 | static char *source_error; | |
471 | static int source_error_allocated; | |
472 | ||
473 | /* Something to glom on to the start of error_pre_print if source_file_name | |
474 | is set. */ | |
475 | static char *source_pre_error; | |
476 | ||
bd5635a1 RP |
477 | /* Clean up on error during a "source" command (or execution of a |
478 | user-defined command). */ | |
479 | ||
480 | static void | |
481 | source_cleanup (stream) | |
482 | FILE *stream; | |
483 | { | |
484 | /* Restore the previous input stream. */ | |
485 | instream = stream; | |
486 | } | |
487 | ||
488 | /* Read commands from STREAM. */ | |
489 | static void | |
490 | read_command_file (stream) | |
491 | FILE *stream; | |
492 | { | |
493 | struct cleanup *cleanups; | |
494 | ||
495 | cleanups = make_cleanup (source_cleanup, instream); | |
496 | instream = stream; | |
497 | command_loop (); | |
498 | do_cleanups (cleanups); | |
499 | } | |
500 | \f | |
501 | int | |
502 | main (argc, argv) | |
503 | int argc; | |
504 | char **argv; | |
505 | { | |
506 | int count; | |
bd5635a1 RP |
507 | static int quiet = 0; |
508 | static int batch = 0; | |
509 | ||
510 | /* Pointers to various arguments from command line. */ | |
511 | char *symarg = NULL; | |
512 | char *execarg = NULL; | |
513 | char *corearg = NULL; | |
514 | char *cdarg = NULL; | |
515 | char *ttyarg = NULL; | |
516 | ||
c307bb11 JK |
517 | /* These are static so that we can take their address in an initializer. */ |
518 | static int print_help; | |
519 | static int print_version; | |
520 | ||
521 | /* Pointers to all arguments of --command option. */ | |
bd5635a1 RP |
522 | char **cmdarg; |
523 | /* Allocated size of cmdarg. */ | |
524 | int cmdsize; | |
525 | /* Number of elements of cmdarg used. */ | |
526 | int ncmd; | |
527 | ||
c307bb11 | 528 | /* Indices of all arguments of --directory option. */ |
bd5635a1 RP |
529 | char **dirarg; |
530 | /* Allocated size. */ | |
531 | int dirsize; | |
532 | /* Number of elements used. */ | |
533 | int ndir; | |
534 | ||
3a16d640 JG |
535 | struct stat homebuf, cwdbuf; |
536 | char *homedir, *homeinit; | |
537 | ||
bd5635a1 RP |
538 | register int i; |
539 | ||
540 | /* This needs to happen before the first use of malloc. */ | |
318bf84f | 541 | init_malloc ((PTR) NULL); |
bd5635a1 RP |
542 | |
543 | #if defined (ALIGN_STACK_ON_STARTUP) | |
544 | i = (int) &count & 0x3; | |
545 | if (i != 0) | |
546 | alloca (4 - i); | |
547 | #endif | |
548 | ||
bd099407 | 549 | /* If error() is called from initialization code, just exit */ |
9748446f | 550 | if (SET_TOP_LEVEL ()) { |
bd099407 JG |
551 | exit(1); |
552 | } | |
553 | ||
bd5635a1 RP |
554 | cmdsize = 1; |
555 | cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg)); | |
556 | ncmd = 0; | |
557 | dirsize = 1; | |
558 | dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg)); | |
559 | ndir = 0; | |
560 | ||
561 | quit_flag = 0; | |
562 | line = (char *) xmalloc (linesize); | |
563 | line[0] = '\0'; /* Terminate saved (now empty) cmd line */ | |
564 | instream = stdin; | |
565 | ||
f7402c04 | 566 | getcwd (dirbuf, sizeof (dirbuf)); |
bd5635a1 RP |
567 | current_directory = dirbuf; |
568 | ||
569 | #ifdef SET_STACK_LIMIT_HUGE | |
570 | { | |
571 | struct rlimit rlim; | |
572 | ||
573 | /* Set the stack limit huge so that alloca (particularly stringtab | |
574 | * in dbxread.c) does not fail. */ | |
575 | getrlimit (RLIMIT_STACK, &rlim); | |
576 | original_stack_limit = rlim.rlim_cur; | |
577 | rlim.rlim_cur = rlim.rlim_max; | |
578 | setrlimit (RLIMIT_STACK, &rlim); | |
579 | } | |
580 | #endif /* SET_STACK_LIMIT_HUGE */ | |
581 | ||
582 | /* Parse arguments and options. */ | |
583 | { | |
584 | int c; | |
bd5635a1 RP |
585 | /* When var field is 0, use flag field to record the equivalent |
586 | short option (or arbitrary numbers starting at 10 for those | |
587 | with no equivalent). */ | |
588 | static struct option long_options[] = | |
589 | { | |
318bf84f FF |
590 | {"readnow", no_argument, &readnow_symbol_files, 1}, |
591 | {"r", no_argument, &readnow_symbol_files, 1}, | |
592 | {"mapped", no_argument, &mapped_symbol_files, 1}, | |
593 | {"m", no_argument, &mapped_symbol_files, 1}, | |
ee0613d1 JG |
594 | {"quiet", no_argument, &quiet, 1}, |
595 | {"q", no_argument, &quiet, 1}, | |
fb29d681 | 596 | {"silent", no_argument, &quiet, 1}, |
ee0613d1 JG |
597 | {"nx", no_argument, &inhibit_gdbinit, 1}, |
598 | {"n", no_argument, &inhibit_gdbinit, 1}, | |
599 | {"batch", no_argument, &batch, 1}, | |
600 | {"epoch", no_argument, &epoch_interface, 1}, | |
601 | {"fullname", no_argument, &frame_file_full_name, 1}, | |
602 | {"f", no_argument, &frame_file_full_name, 1}, | |
603 | {"help", no_argument, &print_help, 1}, | |
604 | {"se", required_argument, 0, 10}, | |
605 | {"symbols", required_argument, 0, 's'}, | |
606 | {"s", required_argument, 0, 's'}, | |
607 | {"exec", required_argument, 0, 'e'}, | |
608 | {"e", required_argument, 0, 'e'}, | |
609 | {"core", required_argument, 0, 'c'}, | |
610 | {"c", required_argument, 0, 'c'}, | |
611 | {"command", required_argument, 0, 'x'}, | |
c307bb11 | 612 | {"version", no_argument, &print_version, 1}, |
ee0613d1 JG |
613 | {"x", required_argument, 0, 'x'}, |
614 | {"directory", required_argument, 0, 'd'}, | |
615 | {"cd", required_argument, 0, 11}, | |
616 | {"tty", required_argument, 0, 't'}, | |
617 | {"baud", required_argument, 0, 'b'}, | |
618 | {"b", required_argument, 0, 'b'}, | |
bd5635a1 RP |
619 | /* Allow machine descriptions to add more options... */ |
620 | #ifdef ADDITIONAL_OPTIONS | |
621 | ADDITIONAL_OPTIONS | |
622 | #endif | |
ee0613d1 | 623 | {0, no_argument, 0, 0}, |
bd5635a1 RP |
624 | }; |
625 | ||
626 | while (1) | |
627 | { | |
ee0613d1 JG |
628 | int option_index; |
629 | ||
bd5635a1 RP |
630 | c = getopt_long_only (argc, argv, "", |
631 | long_options, &option_index); | |
632 | if (c == EOF) | |
633 | break; | |
634 | ||
635 | /* Long option that takes an argument. */ | |
636 | if (c == 0 && long_options[option_index].flag == 0) | |
637 | c = long_options[option_index].val; | |
638 | ||
639 | switch (c) | |
640 | { | |
641 | case 0: | |
642 | /* Long option that just sets a flag. */ | |
643 | break; | |
644 | case 10: | |
645 | symarg = optarg; | |
646 | execarg = optarg; | |
647 | break; | |
648 | case 11: | |
649 | cdarg = optarg; | |
650 | break; | |
651 | case 's': | |
652 | symarg = optarg; | |
653 | break; | |
654 | case 'e': | |
655 | execarg = optarg; | |
656 | break; | |
657 | case 'c': | |
658 | corearg = optarg; | |
659 | break; | |
660 | case 'x': | |
661 | cmdarg[ncmd++] = optarg; | |
662 | if (ncmd >= cmdsize) | |
663 | { | |
664 | cmdsize *= 2; | |
665 | cmdarg = (char **) xrealloc ((char *)cmdarg, | |
666 | cmdsize * sizeof (*cmdarg)); | |
667 | } | |
668 | break; | |
669 | case 'd': | |
670 | dirarg[ndir++] = optarg; | |
671 | if (ndir >= dirsize) | |
672 | { | |
673 | dirsize *= 2; | |
674 | dirarg = (char **) xrealloc ((char *)dirarg, | |
675 | dirsize * sizeof (*dirarg)); | |
676 | } | |
677 | break; | |
678 | case 't': | |
679 | ttyarg = optarg; | |
680 | break; | |
681 | case 'q': | |
682 | quiet = 1; | |
683 | break; | |
684 | case 'b': | |
d0d8484a SG |
685 | { |
686 | int i; | |
687 | char *p; | |
688 | ||
689 | i = strtol (optarg, &p, 0); | |
690 | if (i == 0 && p == optarg) | |
691 | warning ("Could not set baud rate to `%s'.\n", optarg); | |
692 | else | |
693 | baud_rate = i; | |
694 | } | |
bd5635a1 | 695 | break; |
d0d8484a | 696 | |
bd5635a1 RP |
697 | #ifdef ADDITIONAL_OPTION_CASES |
698 | ADDITIONAL_OPTION_CASES | |
699 | #endif | |
700 | case '?': | |
199b2450 | 701 | fprintf_unfiltered (gdb_stderr, |
fb29d681 | 702 | "Use `%s --help' for a complete list of options.\n", |
bd5635a1 RP |
703 | argv[0]); |
704 | exit (1); | |
705 | } | |
bd5635a1 | 706 | } |
fb29d681 | 707 | |
bd5635a1 RP |
708 | /* OK, that's all the options. The other arguments are filenames. */ |
709 | count = 0; | |
710 | for (; optind < argc; optind++) | |
711 | switch (++count) | |
712 | { | |
713 | case 1: | |
714 | symarg = argv[optind]; | |
715 | execarg = argv[optind]; | |
716 | break; | |
717 | case 2: | |
718 | corearg = argv[optind]; | |
719 | break; | |
720 | case 3: | |
199b2450 | 721 | fprintf_unfiltered (gdb_stderr, |
bd5635a1 RP |
722 | "Excess command line arguments ignored. (%s%s)\n", |
723 | argv[optind], (optind == argc - 1) ? "" : " ..."); | |
724 | break; | |
725 | } | |
726 | if (batch) | |
727 | quiet = 1; | |
728 | } | |
729 | ||
730 | /* Run the init function of each source file */ | |
731 | ||
fc61e9ee | 732 | init_cmd_lists (); /* This needs to be done first */ |
bd5635a1 | 733 | initialize_all_files (); |
fc61e9ee | 734 | init_main (); /* But that omits this file! Do it now */ |
bd5635a1 RP |
735 | init_signals (); |
736 | ||
c307bb11 JK |
737 | /* Do these (and anything which might call wrap_here or *_filtered) |
738 | after initialize_all_files. */ | |
739 | if (print_version) | |
740 | { | |
199b2450 | 741 | print_gdb_version (gdb_stdout); |
c307bb11 JK |
742 | wrap_here (""); |
743 | printf_filtered ("\n"); | |
744 | exit (0); | |
745 | } | |
746 | ||
747 | if (print_help) | |
748 | { | |
749 | /* --version is intentionally not documented here, because we | |
750 | are printing the version here, and the help is long enough | |
751 | already. */ | |
752 | ||
199b2450 | 753 | print_gdb_version (gdb_stdout); |
c307bb11 JK |
754 | /* Make sure the output gets printed. */ |
755 | wrap_here (""); | |
756 | printf_filtered ("\n"); | |
757 | ||
758 | /* But don't use *_filtered here. We don't want to prompt for continue | |
759 | no matter how small the screen or how much we're going to print. */ | |
199b2450 | 760 | fputs_unfiltered ("\ |
c307bb11 JK |
761 | This is the GNU debugger. Usage:\n\ |
762 | gdb [options] [executable-file [core-file or process-id]]\n\ | |
763 | Options:\n\ | |
764 | --help Print this message.\n\ | |
765 | --quiet Do not print version number on startup.\n\ | |
766 | --fullname Output information used by emacs-GDB interface.\n\ | |
767 | --epoch Output information used by epoch emacs-GDB interface.\n\ | |
768 | --batch Exit after processing options.\n\ | |
769 | --nx Do not read .gdbinit file.\n\ | |
770 | --tty=TTY Use TTY for input/output by the program being debugged.\n\ | |
771 | --cd=DIR Change current directory to DIR.\n\ | |
772 | --directory=DIR Search for source files in DIR.\n\ | |
773 | --command=FILE Execute GDB commands from FILE.\n\ | |
774 | --symbols=SYMFILE Read symbols from SYMFILE.\n\ | |
775 | --exec=EXECFILE Use EXECFILE as the executable.\n\ | |
776 | --se=FILE Use FILE as symbol file and executable file.\n\ | |
777 | --core=COREFILE Analyze the core dump COREFILE.\n\ | |
778 | -b BAUDRATE Set serial port baud rate used for remote debugging.\n\ | |
779 | --mapped Use mapped symbol files if supported on this system.\n\ | |
780 | --readnow Fully read symbol files on first access.\n\ | |
199b2450 | 781 | ", gdb_stdout); |
c307bb11 | 782 | #ifdef ADDITIONAL_OPTION_HELP |
199b2450 | 783 | fputs_unfiltered (ADDITIONAL_OPTION_HELP, gdb_stdout); |
c307bb11 | 784 | #endif |
199b2450 | 785 | fputs_unfiltered ("\n\ |
c307bb11 | 786 | For more information, type \"help\" from within GDB, or consult the\n\ |
199b2450 | 787 | GDB manual (available as on-line info or a printed manual).\n", gdb_stdout); |
c307bb11 JK |
788 | exit (0); |
789 | } | |
790 | ||
bd5635a1 RP |
791 | if (!quiet) |
792 | { | |
81066208 JG |
793 | /* Print all the junk at the top, with trailing "..." if we are about |
794 | to read a symbol file (possibly slowly). */ | |
795 | print_gnu_advertisement (); | |
199b2450 | 796 | print_gdb_version (gdb_stdout); |
81066208 JG |
797 | if (symarg) |
798 | printf_filtered (".."); | |
bd099407 | 799 | wrap_here(""); |
199b2450 | 800 | gdb_flush (gdb_stdout); /* Force to screen during slow operations */ |
bd5635a1 RP |
801 | } |
802 | ||
81066208 | 803 | error_pre_print = "\n\n"; |
51b57ded FF |
804 | /* We may get more than one warning, don't double space all of them... */ |
805 | warning_pre_print = "\nwarning: "; | |
81066208 | 806 | |
538280d8 FF |
807 | /* We need a default language for parsing expressions, so simple things like |
808 | "set width 0" won't fail if no language is explicitly set in a config file | |
809 | or implicitly set by reading an executable during startup. */ | |
810 | set_language (language_c); | |
b5af69c3 | 811 | expected_language = current_language; /* don't warn about the change. */ |
538280d8 | 812 | |
3a16d640 JG |
813 | /* Read and execute $HOME/.gdbinit file, if it exists. This is done |
814 | *before* all the command line arguments are processed; it sets | |
815 | global parameters, which are independent of what file you are | |
816 | debugging or what directory you are in. */ | |
817 | homedir = getenv ("HOME"); | |
818 | if (homedir) | |
819 | { | |
820 | homeinit = (char *) alloca (strlen (getenv ("HOME")) + | |
821 | strlen (gdbinit) + 10); | |
822 | strcpy (homeinit, getenv ("HOME")); | |
823 | strcat (homeinit, "/"); | |
824 | strcat (homeinit, gdbinit); | |
825 | if (!inhibit_gdbinit && access (homeinit, R_OK) == 0) | |
826 | { | |
9748446f | 827 | if (!SET_TOP_LEVEL ()) |
3a16d640 JG |
828 | source_command (homeinit, 0); |
829 | } | |
830 | do_cleanups (ALL_CLEANUPS); | |
831 | ||
832 | /* Do stats; no need to do them elsewhere since we'll only | |
833 | need them if homedir is set. Make sure that they are | |
834 | zero in case one of them fails (this guarantees that they | |
835 | won't match if either exists). */ | |
836 | ||
837 | memset (&homebuf, 0, sizeof (struct stat)); | |
838 | memset (&cwdbuf, 0, sizeof (struct stat)); | |
839 | ||
840 | stat (homeinit, &homebuf); | |
841 | stat (gdbinit, &cwdbuf); /* We'll only need this if | |
842 | homedir was set. */ | |
843 | } | |
844 | ||
bd5635a1 RP |
845 | /* Now perform all the actions indicated by the arguments. */ |
846 | if (cdarg != NULL) | |
847 | { | |
9748446f | 848 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
849 | { |
850 | cd_command (cdarg, 0); | |
851 | init_source_path (); | |
852 | } | |
853 | } | |
f266e564 JK |
854 | do_cleanups (ALL_CLEANUPS); |
855 | ||
bd5635a1 | 856 | for (i = 0; i < ndir; i++) |
9748446f | 857 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 858 | directory_command (dirarg[i], 0); |
51b57ded | 859 | free ((PTR)dirarg); |
f266e564 JK |
860 | do_cleanups (ALL_CLEANUPS); |
861 | ||
bd5635a1 RP |
862 | if (execarg != NULL |
863 | && symarg != NULL | |
2e4964ad | 864 | && STREQ (execarg, symarg)) |
bd5635a1 RP |
865 | { |
866 | /* The exec file and the symbol-file are the same. If we can't open | |
867 | it, better only print one error message. */ | |
9748446f | 868 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
869 | { |
870 | exec_file_command (execarg, !batch); | |
81066208 | 871 | symbol_file_command (symarg, 0); |
bd5635a1 RP |
872 | } |
873 | } | |
874 | else | |
875 | { | |
876 | if (execarg != NULL) | |
9748446f | 877 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
878 | exec_file_command (execarg, !batch); |
879 | if (symarg != NULL) | |
9748446f | 880 | if (!SET_TOP_LEVEL ()) |
81066208 | 881 | symbol_file_command (symarg, 0); |
bd5635a1 | 882 | } |
f266e564 JK |
883 | do_cleanups (ALL_CLEANUPS); |
884 | ||
81066208 JG |
885 | /* After the symbol file has been read, print a newline to get us |
886 | beyond the copyright line... But errors should still set off | |
887 | the error message with a (single) blank line. */ | |
afe4ca15 JG |
888 | if (!quiet) |
889 | printf_filtered ("\n"); | |
81066208 | 890 | error_pre_print = "\n"; |
318bf84f | 891 | warning_pre_print = "\nwarning: "; |
81066208 | 892 | |
bd5635a1 | 893 | if (corearg != NULL) |
9748446f | 894 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 895 | core_file_command (corearg, !batch); |
9748446f | 896 | else if (isdigit (corearg[0]) && !SET_TOP_LEVEL ()) |
bd5635a1 | 897 | attach_command (corearg, !batch); |
f266e564 | 898 | do_cleanups (ALL_CLEANUPS); |
bd5635a1 RP |
899 | |
900 | if (ttyarg != NULL) | |
9748446f | 901 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 902 | tty_command (ttyarg, !batch); |
f266e564 | 903 | do_cleanups (ALL_CLEANUPS); |
bd5635a1 RP |
904 | |
905 | #ifdef ADDITIONAL_OPTION_HANDLER | |
906 | ADDITIONAL_OPTION_HANDLER; | |
907 | #endif | |
908 | ||
81066208 JG |
909 | /* Error messages should no longer be distinguished with extra output. */ |
910 | error_pre_print = 0; | |
318bf84f | 911 | warning_pre_print = "warning: "; |
81066208 | 912 | |
3a16d640 JG |
913 | /* Read the .gdbinit file in the current directory, *if* it isn't |
914 | the same as the $HOME/.gdbinit file (it should exist, also). */ | |
915 | ||
916 | if (!homedir | |
917 | || memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat))) | |
918 | if (!inhibit_gdbinit && access (gdbinit, R_OK) == 0) | |
bd5635a1 | 919 | { |
9748446f | 920 | if (!SET_TOP_LEVEL ()) |
d75710b0 | 921 | source_command (gdbinit, 0); |
bd5635a1 | 922 | } |
d75710b0 FF |
923 | do_cleanups (ALL_CLEANUPS); |
924 | ||
925 | for (i = 0; i < ncmd; i++) | |
926 | { | |
9748446f | 927 | if (!SET_TOP_LEVEL ()) |
d75710b0 FF |
928 | { |
929 | if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0') | |
930 | read_command_file (stdin); | |
931 | else | |
932 | source_command (cmdarg[i], !batch); | |
933 | do_cleanups (ALL_CLEANUPS); | |
934 | } | |
935 | } | |
51b57ded | 936 | free ((PTR)cmdarg); |
bd5635a1 | 937 | |
8b3c897a | 938 | /* Read in the old history after all the command files have been read. */ |
fc61e9ee | 939 | init_history(); |
8b3c897a | 940 | |
bd5635a1 RP |
941 | if (batch) |
942 | { | |
943 | /* We have hit the end of the batch file. */ | |
944 | exit (0); | |
945 | } | |
946 | ||
947 | /* Do any host- or target-specific hacks. This is used for i960 targets | |
948 | to force the user to set a nindy target and spec its parameters. */ | |
949 | ||
950 | #ifdef BEFORE_MAIN_LOOP_HOOK | |
951 | BEFORE_MAIN_LOOP_HOOK; | |
952 | #endif | |
953 | ||
954 | /* The command loop. */ | |
955 | ||
956 | while (1) | |
957 | { | |
9748446f | 958 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 959 | { |
f266e564 | 960 | do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */ |
bd5635a1 RP |
961 | command_loop (); |
962 | quit_command ((char *)0, instream == stdin); | |
963 | } | |
964 | } | |
965 | /* No exit -- exit is through quit_command. */ | |
966 | } | |
967 | ||
b5af69c3 JG |
968 | void |
969 | execute_user_command (c, args) | |
970 | struct cmd_list_element *c; | |
971 | char *args; | |
972 | { | |
973 | register struct command_line *cmdlines; | |
974 | struct cleanup *old_chain; | |
975 | ||
976 | if (args) | |
977 | error ("User-defined commands cannot take arguments."); | |
978 | ||
979 | cmdlines = c->user_commands; | |
980 | if (cmdlines == 0) | |
981 | /* Null command */ | |
982 | return; | |
983 | ||
984 | /* Set the instream to 0, indicating execution of a | |
985 | user-defined function. */ | |
986 | old_chain = make_cleanup (source_cleanup, instream); | |
987 | instream = (FILE *) 0; | |
988 | while (cmdlines) | |
989 | { | |
990 | execute_command (cmdlines->line, 0); | |
991 | cmdlines = cmdlines->next; | |
992 | } | |
993 | do_cleanups (old_chain); | |
994 | } | |
995 | ||
bd5635a1 RP |
996 | /* Execute the line P as a command. |
997 | Pass FROM_TTY as second argument to the defining function. */ | |
998 | ||
999 | void | |
1000 | execute_command (p, from_tty) | |
1001 | char *p; | |
1002 | int from_tty; | |
1003 | { | |
1004 | register struct cmd_list_element *c; | |
bd099407 | 1005 | register enum language flang; |
bd099407 | 1006 | static int warned = 0; |
bd5635a1 RP |
1007 | |
1008 | free_all_values (); | |
1009 | ||
1010 | /* This can happen when command_line_input hits end of file. */ | |
1011 | if (p == NULL) | |
1012 | return; | |
1013 | ||
1014 | while (*p == ' ' || *p == '\t') p++; | |
1015 | if (*p) | |
1016 | { | |
1017 | char *arg; | |
1018 | ||
1019 | c = lookup_cmd (&p, cmdlist, "", 0, 1); | |
1020 | /* Pass null arg rather than an empty one. */ | |
1021 | arg = *p ? p : 0; | |
b5af69c3 JG |
1022 | |
1023 | /* If this command has been hooked, run the hook first. */ | |
1024 | if (c->hook) | |
1025 | execute_user_command (c->hook, (char *)0); | |
1026 | ||
bd5635a1 | 1027 | if (c->class == class_user) |
b5af69c3 | 1028 | execute_user_command (c, arg); |
bd5635a1 RP |
1029 | else if (c->type == set_cmd || c->type == show_cmd) |
1030 | do_setshow_command (arg, from_tty & caution, c); | |
30875e1c | 1031 | else if (c->function.cfunc == NO_FUNCTION) |
bd5635a1 RP |
1032 | error ("That is not a command, just a help topic."); |
1033 | else | |
30875e1c | 1034 | (*c->function.cfunc) (arg, from_tty & caution); |
bd099407 JG |
1035 | } |
1036 | ||
afe4ca15 | 1037 | /* Tell the user if the language has changed (except first time). */ |
b5af69c3 | 1038 | if (current_language != expected_language) |
bd099407 JG |
1039 | { |
1040 | if (language_mode == language_mode_auto) { | |
b5af69c3 | 1041 | language_info (1); /* Print what changed. */ |
bd5635a1 | 1042 | } |
bd099407 JG |
1043 | warned = 0; |
1044 | } | |
1045 | ||
1046 | /* Warn the user if the working language does not match the | |
1047 | language of the current frame. Only warn the user if we are | |
1048 | actually running the program, i.e. there is a stack. */ | |
afe4ca15 JG |
1049 | /* FIXME: This should be cacheing the frame and only running when |
1050 | the frame changes. */ | |
bd099407 JG |
1051 | if (target_has_stack) |
1052 | { | |
afe4ca15 JG |
1053 | flang = get_frame_language (); |
1054 | if (!warned | |
1055 | && flang != language_unknown | |
1056 | && flang != current_language->la_language) | |
bd099407 JG |
1057 | { |
1058 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
1059 | warned = 1; | |
1060 | } | |
1061 | } | |
bd5635a1 RP |
1062 | } |
1063 | ||
1064 | /* ARGSUSED */ | |
30875e1c | 1065 | static void |
f266e564 | 1066 | command_loop_marker (foo) |
bd5635a1 RP |
1067 | int foo; |
1068 | { | |
1069 | } | |
1070 | ||
1071 | /* Read commands from `instream' and execute them | |
1072 | until end of file or error reading instream. */ | |
30875e1c | 1073 | static void |
bd5635a1 RP |
1074 | command_loop () |
1075 | { | |
1076 | struct cleanup *old_chain; | |
1077 | char *command; | |
1078 | int stdin_is_tty = ISATTY (stdin); | |
1079 | ||
1080 | while (!feof (instream)) | |
1081 | { | |
1082 | if (window_hook && instream == stdin) | |
1083 | (*window_hook) (instream, prompt); | |
1084 | ||
1085 | quit_flag = 0; | |
1086 | if (instream == stdin && stdin_is_tty) | |
1087 | reinitialize_more_filter (); | |
f266e564 | 1088 | old_chain = make_cleanup (command_loop_marker, 0); |
30875e1c | 1089 | command = command_line_input (instream == stdin ? prompt : (char *) NULL, |
bd5635a1 RP |
1090 | instream == stdin); |
1091 | if (command == 0) | |
1092 | return; | |
1093 | execute_command (command, instream == stdin); | |
1094 | /* Do any commands attached to breakpoint we stopped at. */ | |
1095 | bpstat_do_actions (&stop_bpstat); | |
1096 | do_cleanups (old_chain); | |
1097 | } | |
1098 | } | |
1099 | \f | |
1100 | /* Commands call this if they do not want to be repeated by null lines. */ | |
1101 | ||
1102 | void | |
1103 | dont_repeat () | |
1104 | { | |
1105 | /* If we aren't reading from standard input, we are saving the last | |
1106 | thing read from stdin in line and don't want to delete it. Null lines | |
1107 | won't repeat here in any case. */ | |
1108 | if (instream == stdin) | |
1109 | *line = 0; | |
1110 | } | |
1111 | \f | |
1112 | /* Read a line from the stream "instream" without command line editing. | |
1113 | ||
1114 | It prints PRROMPT once at the start. | |
bdbd5f50 JG |
1115 | Action is compatible with "readline", e.g. space for the result is |
1116 | malloc'd and should be freed by the caller. | |
bd5635a1 | 1117 | |
bdbd5f50 | 1118 | A NULL return means end of file. */ |
bd5635a1 | 1119 | char * |
bdbd5f50 | 1120 | gdb_readline (prrompt) |
bd5635a1 | 1121 | char *prrompt; |
bd5635a1 RP |
1122 | { |
1123 | int c; | |
1124 | char *result; | |
1125 | int input_index = 0; | |
1126 | int result_size = 80; | |
1127 | ||
1128 | if (prrompt) | |
1129 | { | |
c35475f9 JG |
1130 | /* Don't use a _filtered function here. It causes the assumed |
1131 | character position to be off, since the newline we read from | |
1132 | the user is not accounted for. */ | |
199b2450 TL |
1133 | fputs_unfiltered (prrompt, gdb_stdout); |
1134 | gdb_flush (gdb_stdout); | |
bd5635a1 RP |
1135 | } |
1136 | ||
bdbd5f50 | 1137 | result = (char *) xmalloc (result_size); |
bd5635a1 RP |
1138 | |
1139 | while (1) | |
1140 | { | |
1141 | /* Read from stdin if we are executing a user defined command. | |
1142 | This is the right thing for prompt_for_continue, at least. */ | |
1143 | c = fgetc (instream ? instream : stdin); | |
bdbd5f50 JG |
1144 | |
1145 | if (c == EOF) | |
bd5635a1 | 1146 | { |
d0d8484a SG |
1147 | if (input_index > 0) |
1148 | /* The last line does not end with a newline. Return it, and | |
1149 | if we are called again fgetc will still return EOF and | |
1150 | we'll return NULL then. */ | |
1151 | break; | |
bdbd5f50 JG |
1152 | free (result); |
1153 | return NULL; | |
bd5635a1 | 1154 | } |
bd5635a1 | 1155 | |
bdbd5f50 JG |
1156 | if (c == '\n') |
1157 | break; | |
bd5635a1 | 1158 | |
bdbd5f50 JG |
1159 | result[input_index++] = c; |
1160 | while (input_index >= result_size) | |
1161 | { | |
1162 | result_size *= 2; | |
1163 | result = (char *) xrealloc (result, result_size); | |
1164 | } | |
bd5635a1 | 1165 | } |
bdbd5f50 JG |
1166 | |
1167 | result[input_index++] = '\0'; | |
1168 | return result; | |
bd5635a1 RP |
1169 | } |
1170 | ||
bd5635a1 RP |
1171 | /* Variables which control command line editing and history |
1172 | substitution. These variables are given default values at the end | |
1173 | of this file. */ | |
1174 | static int command_editing_p; | |
1175 | static int history_expansion_p; | |
1176 | static int write_history_p; | |
1177 | static int history_size; | |
1178 | static char *history_filename; | |
1179 | ||
c307bb11 JK |
1180 | /* readline uses the word breaks for two things: |
1181 | (1) In figuring out where to point the TEXT parameter to the | |
1182 | rl_completion_entry_function. Since we don't use TEXT for much, | |
1183 | it doesn't matter a lot what the word breaks are for this purpose, but | |
1184 | it does affect how much stuff M-? lists. | |
1185 | (2) If one of the matches contains a word break character, readline | |
1186 | will quote it. That's why we switch between | |
1187 | gdb_completer_word_break_characters and | |
1188 | gdb_completer_command_word_break_characters. I'm not sure when | |
1189 | we need this behavior (perhaps for funky characters in C++ symbols?). */ | |
1190 | ||
bd5635a1 RP |
1191 | /* Variables which are necessary for fancy command line editing. */ |
1192 | char *gdb_completer_word_break_characters = | |
a8e033f2 SG |
1193 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-"; |
1194 | ||
1195 | /* When completing on command names, we remove '-' from the list of | |
1196 | word break characters, since we use it in command names. If the | |
1197 | readline library sees one in any of the current completion strings, | |
1198 | it thinks that the string needs to be quoted and automatically supplies | |
1199 | a leading quote. */ | |
1200 | char *gdb_completer_command_word_break_characters = | |
1201 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,"; | |
1202 | ||
51b57ded FF |
1203 | /* Characters that can be used to quote completion strings. Note that we |
1204 | can't include '"' because the gdb C parser treats such quoted sequences | |
1205 | as strings. */ | |
1206 | char *gdb_completer_quote_characters = | |
1207 | "'"; | |
bd5635a1 RP |
1208 | |
1209 | /* Functions that are used as part of the fancy command line editing. */ | |
1210 | ||
1211 | /* This can be used for functions which don't want to complete on symbols | |
1212 | but don't want to complete on anything else either. */ | |
1213 | /* ARGSUSED */ | |
1214 | char ** | |
c307bb11 | 1215 | noop_completer (text, prefix) |
bd5635a1 | 1216 | char *text; |
c307bb11 | 1217 | char *prefix; |
bd5635a1 RP |
1218 | { |
1219 | return NULL; | |
1220 | } | |
1221 | ||
bd50d1b0 | 1222 | /* Complete on filenames. */ |
bd50d1b0 | 1223 | char ** |
c307bb11 | 1224 | filename_completer (text, word) |
bd50d1b0 | 1225 | char *text; |
c307bb11 | 1226 | char *word; |
bd50d1b0 JK |
1227 | { |
1228 | /* From readline. */ | |
1229 | extern char *filename_completion_function (); | |
1230 | int subsequent_name; | |
1231 | char **return_val; | |
1232 | int return_val_used; | |
1233 | int return_val_alloced; | |
1234 | ||
1235 | return_val_used = 0; | |
1236 | /* Small for testing. */ | |
1237 | return_val_alloced = 1; | |
1238 | return_val = (char **) xmalloc (return_val_alloced * sizeof (char *)); | |
1239 | ||
1240 | subsequent_name = 0; | |
1241 | while (1) | |
1242 | { | |
1243 | char *p; | |
1244 | p = filename_completion_function (text, subsequent_name); | |
1245 | if (return_val_used >= return_val_alloced) | |
1246 | { | |
1247 | return_val_alloced *= 2; | |
1248 | return_val = | |
1249 | (char **) xrealloc (return_val, | |
1250 | return_val_alloced * sizeof (char *)); | |
1251 | } | |
bd50d1b0 | 1252 | if (p == NULL) |
c307bb11 JK |
1253 | { |
1254 | return_val[return_val_used++] = p; | |
1255 | break; | |
1256 | } | |
1257 | /* Like emacs, don't complete on old versions. Especially useful | |
1258 | in the "source" command. */ | |
1259 | if (p[strlen (p) - 1] == '~') | |
1260 | continue; | |
1261 | ||
1262 | { | |
1263 | char *q; | |
1264 | if (word == text) | |
1265 | /* Return exactly p. */ | |
1266 | return_val[return_val_used++] = p; | |
1267 | else if (word > text) | |
1268 | { | |
1269 | /* Return some portion of p. */ | |
1270 | q = xmalloc (strlen (p) + 5); | |
1271 | strcpy (q, p + (word - text)); | |
1272 | return_val[return_val_used++] = q; | |
1273 | free (p); | |
1274 | } | |
1275 | else | |
1276 | { | |
1277 | /* Return some of TEXT plus p. */ | |
1278 | q = xmalloc (strlen (p) + (text - word) + 5); | |
1279 | strncpy (q, word, text - word); | |
1280 | q[text - word] = '\0'; | |
1281 | strcat (q, p); | |
1282 | return_val[return_val_used++] = q; | |
1283 | free (p); | |
1284 | } | |
1285 | } | |
bd50d1b0 JK |
1286 | subsequent_name = 1; |
1287 | } | |
c307bb11 JK |
1288 | #if 0 |
1289 | /* There is no way to do this just long enough to affect quote inserting | |
1290 | without also affecting the next completion. This should be fixed in | |
1291 | readline. FIXME. */ | |
1292 | /* Insure that readline does the right thing | |
1293 | with respect to inserting quotes. */ | |
1294 | rl_completer_word_break_characters = ""; | |
1295 | #endif | |
bd50d1b0 JK |
1296 | return return_val; |
1297 | } | |
1298 | ||
c307bb11 JK |
1299 | /* Here are some useful test cases for completion. FIXME: These should |
1300 | be put in the test suite. They should be tested with both M-? and TAB. | |
1301 | ||
1302 | "show output-" "radix" | |
1303 | "show output" "-radix" | |
1304 | "p" ambiguous (commands starting with p--path, print, printf, etc.) | |
1305 | "p " ambiguous (all symbols) | |
1306 | "info t foo" no completions | |
1307 | "info t " no completions | |
1308 | "info t" ambiguous ("info target", "info terminal", etc.) | |
1309 | "info ajksdlfk" no completions | |
1310 | "info ajksdlfk " no completions | |
1311 | "info" " " | |
1312 | "info " ambiguous (all info commands) | |
1313 | "p \"a" no completions (string constant) | |
1314 | "p 'a" ambiguous (all symbols starting with a) | |
1315 | "p b-a" ambiguous (all symbols starting with a) | |
1316 | "p b-" ambiguous (all symbols) | |
1317 | "file Make" "file" (word break hard to screw up here) | |
1318 | "file ../gdb.stabs/wi" "erd" (needs to not break word at slash) | |
1319 | */ | |
1320 | ||
1321 | /* Generate completions one by one for the completer. Each time we are | |
1322 | called return another potential completion to the caller. The function | |
1323 | is misnamed; it just completes on commands or passes the buck to the | |
1324 | command's completer function; the stuff specific to symbol completion | |
1325 | is in make_symbol_completion_list. | |
1326 | ||
1327 | TEXT is readline's idea of the "word" we are looking at; we don't really | |
1328 | like readline's ideas about word breaking so we ignore it. | |
51b57ded FF |
1329 | |
1330 | MATCHES is the number of matches that have currently been collected from | |
1331 | calling this completion function. When zero, then we need to initialize, | |
1332 | otherwise the initialization has already taken place and we can just | |
1333 | return the next potential completion string. | |
30875e1c | 1334 | |
51b57ded FF |
1335 | Returns NULL if there are no more completions, else a pointer to a string |
1336 | which is a possible completion. | |
1337 | ||
1338 | RL_LINE_BUFFER is available to be looked at; it contains the entire text | |
1339 | of the line. RL_POINT is the offset in that line of the cursor. You | |
1340 | should pretend that the line ends at RL_POINT. */ | |
c307bb11 | 1341 | |
30875e1c | 1342 | static char * |
51b57ded | 1343 | symbol_completion_function (text, matches) |
bd5635a1 | 1344 | char *text; |
51b57ded | 1345 | int matches; |
bd5635a1 | 1346 | { |
51b57ded FF |
1347 | static char **list = (char **)NULL; /* Cache of completions */ |
1348 | static int index; /* Next cached completion */ | |
1349 | char *output = NULL; | |
bd5635a1 | 1350 | char *tmp_command, *p; |
c307bb11 JK |
1351 | /* Pointer within tmp_command which corresponds to text. */ |
1352 | char *word; | |
bd5635a1 | 1353 | struct cmd_list_element *c, *result_list; |
51b57ded FF |
1354 | extern char *rl_line_buffer; |
1355 | extern int rl_point; | |
bd5635a1 | 1356 | |
51b57ded | 1357 | if (matches == 0) |
bd5635a1 | 1358 | { |
51b57ded FF |
1359 | /* The caller is beginning to accumulate a new set of completions, so |
1360 | we need to find all of them now, and cache them for returning one at | |
1361 | a time on future calls. */ | |
1362 | ||
bd5635a1 | 1363 | if (list) |
51b57ded FF |
1364 | { |
1365 | /* Free the storage used by LIST, but not by the strings inside. | |
1366 | This is because rl_complete_internal () frees the strings. */ | |
1367 | free ((PTR)list); | |
1368 | } | |
bd5635a1 RP |
1369 | list = 0; |
1370 | index = 0; | |
1371 | ||
a8e033f2 SG |
1372 | /* Choose the default set of word break characters to break completions. |
1373 | If we later find out that we are doing completions on command strings | |
1374 | (as opposed to strings supplied by the individual command completer | |
1375 | functions, which can be any string) then we will switch to the | |
1376 | special word break set for command strings, which leaves out the | |
c307bb11 | 1377 | '-' character used in some commands. */ |
bd50d1b0 | 1378 | |
a8e033f2 SG |
1379 | rl_completer_word_break_characters = |
1380 | gdb_completer_word_break_characters; | |
1381 | ||
51b57ded | 1382 | /* Decide whether to complete on a list of gdb commands or on symbols. */ |
bd5635a1 RP |
1383 | tmp_command = (char *) alloca (rl_point + 1); |
1384 | p = tmp_command; | |
c307bb11 | 1385 | |
bd5635a1 RP |
1386 | strncpy (tmp_command, rl_line_buffer, rl_point); |
1387 | tmp_command[rl_point] = '\0'; | |
c307bb11 JK |
1388 | /* Since text always contains some number of characters leading up |
1389 | to rl_point, we can find the equivalent position in tmp_command | |
1390 | by subtracting that many characters from the end of tmp_command. */ | |
1391 | word = tmp_command + rl_point - strlen (text); | |
bd5635a1 RP |
1392 | |
1393 | if (rl_point == 0) | |
1394 | { | |
51b57ded FF |
1395 | /* An empty line we want to consider ambiguous; that is, it |
1396 | could be any command. */ | |
bd5635a1 RP |
1397 | c = (struct cmd_list_element *) -1; |
1398 | result_list = 0; | |
1399 | } | |
1400 | else | |
51b57ded FF |
1401 | { |
1402 | c = lookup_cmd_1 (&p, cmdlist, &result_list, 1); | |
1403 | } | |
bd5635a1 RP |
1404 | |
1405 | /* Move p up to the next interesting thing. */ | |
1406 | while (*p == ' ' || *p == '\t') | |
51b57ded FF |
1407 | { |
1408 | p++; | |
1409 | } | |
bd5635a1 RP |
1410 | |
1411 | if (!c) | |
51b57ded | 1412 | { |
c307bb11 JK |
1413 | /* It is an unrecognized command. So there are no |
1414 | possible completions. */ | |
51b57ded FF |
1415 | list = NULL; |
1416 | } | |
bd5635a1 RP |
1417 | else if (c == (struct cmd_list_element *) -1) |
1418 | { | |
c307bb11 JK |
1419 | char *q; |
1420 | ||
1421 | /* lookup_cmd_1 advances p up to the first ambiguous thing, but | |
1422 | doesn't advance over that thing itself. Do so now. */ | |
1423 | q = p; | |
1424 | while (*q && (isalnum (*q) || *q == '-' || *q == '_')) | |
1425 | ++q; | |
1426 | if (q != tmp_command + rl_point) | |
51b57ded | 1427 | { |
c307bb11 JK |
1428 | /* There is something beyond the ambiguous |
1429 | command, so there are no possible completions. For | |
1430 | example, "info t " or "info t foo" does not complete | |
1431 | to anything, because "info t" can be "info target" or | |
1432 | "info terminal". */ | |
1433 | list = NULL; | |
51b57ded | 1434 | } |
bd5635a1 | 1435 | else |
51b57ded | 1436 | { |
c307bb11 JK |
1437 | /* We're trying to complete on the command which was ambiguous. |
1438 | This we can deal with. */ | |
1439 | if (result_list) | |
1440 | { | |
1441 | list = complete_on_cmdlist (*result_list->prefixlist, p, | |
1442 | word); | |
1443 | } | |
1444 | else | |
1445 | { | |
1446 | list = complete_on_cmdlist (cmdlist, p, word); | |
1447 | } | |
1448 | /* Insure that readline does the right thing with respect to | |
1449 | inserting quotes. */ | |
1450 | rl_completer_word_break_characters = | |
1451 | gdb_completer_command_word_break_characters; | |
51b57ded | 1452 | } |
bd5635a1 RP |
1453 | } |
1454 | else | |
1455 | { | |
c307bb11 | 1456 | /* We've recognized a full command. */ |
bd5635a1 | 1457 | |
c307bb11 | 1458 | if (p == tmp_command + rl_point) |
51b57ded | 1459 | { |
c307bb11 JK |
1460 | /* There is no non-whitespace in the line beyond the command. */ |
1461 | ||
1462 | if (p[-1] == ' ' || p[-1] == '\t') | |
51b57ded | 1463 | { |
c307bb11 JK |
1464 | /* The command is followed by whitespace; we need to complete |
1465 | on whatever comes after command. */ | |
1466 | if (c->prefixlist) | |
1467 | { | |
1468 | /* It is a prefix command; what comes after it is | |
1469 | a subcommand (e.g. "info "). */ | |
1470 | list = complete_on_cmdlist (*c->prefixlist, p, word); | |
1471 | ||
1472 | /* Insure that readline does the right thing | |
1473 | with respect to inserting quotes. */ | |
1474 | rl_completer_word_break_characters = | |
1475 | gdb_completer_command_word_break_characters; | |
1476 | } | |
1477 | else | |
1478 | { | |
1479 | /* It is a normal command; what comes after it is | |
1480 | completed by the command's completer function. */ | |
1481 | list = (*c->completer) (p, word); | |
1482 | } | |
51b57ded | 1483 | } |
bd5635a1 | 1484 | else |
51b57ded | 1485 | { |
c307bb11 JK |
1486 | /* The command is not followed by whitespace; we need to |
1487 | complete on the command itself. e.g. "p" which is a | |
1488 | command itself but also can complete to "print", "ptype" | |
1489 | etc. */ | |
1490 | char *q; | |
1491 | ||
1492 | /* Find the command we are completing on. */ | |
1493 | q = p; | |
1494 | while (q > tmp_command) | |
1495 | { | |
1496 | if (isalnum (q[-1]) || q[-1] == '-' || q[-1] == '_') | |
1497 | --q; | |
1498 | else | |
1499 | break; | |
1500 | } | |
1501 | ||
1502 | list = complete_on_cmdlist (result_list, q, word); | |
1503 | ||
1504 | /* Insure that readline does the right thing | |
1505 | with respect to inserting quotes. */ | |
1506 | rl_completer_word_break_characters = | |
1507 | gdb_completer_command_word_break_characters; | |
51b57ded | 1508 | } |
bd5635a1 RP |
1509 | } |
1510 | else | |
1511 | { | |
c307bb11 JK |
1512 | /* There is non-whitespace beyond the command. */ |
1513 | ||
bd5635a1 RP |
1514 | if (c->prefixlist && !c->allow_unknown) |
1515 | { | |
c307bb11 JK |
1516 | /* It is an unrecognized subcommand of a prefix command, |
1517 | e.g. "info adsfkdj". */ | |
bd5635a1 | 1518 | list = NULL; |
bd5635a1 RP |
1519 | } |
1520 | else | |
51b57ded | 1521 | { |
c307bb11 JK |
1522 | /* It is a normal command. */ |
1523 | list = (*c->completer) (p, word); | |
51b57ded | 1524 | } |
bd5635a1 RP |
1525 | } |
1526 | } | |
1527 | } | |
1528 | ||
51b57ded FF |
1529 | /* If we found a list of potential completions during initialization then |
1530 | dole them out one at a time. The vector of completions is NULL | |
1531 | terminated, so after returning the last one, return NULL (and continue | |
1532 | to do so) each time we are called after that, until a new list is | |
1533 | available. */ | |
bd5635a1 | 1534 | |
51b57ded FF |
1535 | if (list) |
1536 | { | |
1537 | output = list[index]; | |
1538 | if (output) | |
1539 | { | |
1540 | index++; | |
1541 | } | |
1542 | } | |
bd5635a1 | 1543 | |
c307bb11 JK |
1544 | #if 0 |
1545 | /* Can't do this because readline hasn't yet checked the word breaks | |
1546 | for figuring out whether to insert a quote. */ | |
1547 | if (output == NULL) | |
1548 | /* Make sure the word break characters are set back to normal for the | |
1549 | next time that readline tries to complete something. */ | |
1550 | rl_completer_word_break_characters = | |
1551 | gdb_completer_word_break_characters; | |
1552 | #endif | |
1553 | ||
bd5635a1 RP |
1554 | return (output); |
1555 | } | |
51b57ded FF |
1556 | |
1557 | /* Skip over a possibly quoted word (as defined by the quote characters | |
1558 | and word break characters the completer uses). Returns pointer to the | |
1559 | location after the "word". */ | |
1560 | ||
1561 | char * | |
1562 | skip_quoted (str) | |
1563 | char *str; | |
1564 | { | |
1565 | char quote_char = '\0'; | |
1566 | char *scan; | |
1567 | ||
1568 | for (scan = str; *scan != '\0'; scan++) | |
1569 | { | |
1570 | if (quote_char != '\0') | |
1571 | { | |
1572 | /* Ignore everything until the matching close quote char */ | |
1573 | if (*scan == quote_char) | |
1574 | { | |
1575 | /* Found matching close quote. */ | |
1576 | scan++; | |
1577 | break; | |
1578 | } | |
1579 | } | |
1580 | else if (strchr (gdb_completer_quote_characters, *scan)) | |
1581 | { | |
1582 | /* Found start of a quoted string. */ | |
1583 | quote_char = *scan; | |
1584 | } | |
1585 | else if (strchr (gdb_completer_word_break_characters, *scan)) | |
1586 | { | |
1587 | break; | |
1588 | } | |
1589 | } | |
1590 | return (scan); | |
1591 | } | |
1592 | ||
bd5635a1 RP |
1593 | \f |
1594 | #ifdef STOP_SIGNAL | |
1595 | static void | |
30875e1c SG |
1596 | stop_sig (signo) |
1597 | int signo; | |
bd5635a1 RP |
1598 | { |
1599 | #if STOP_SIGNAL == SIGTSTP | |
1600 | signal (SIGTSTP, SIG_DFL); | |
1601 | sigsetmask (0); | |
1602 | kill (getpid (), SIGTSTP); | |
1603 | signal (SIGTSTP, stop_sig); | |
1604 | #else | |
1605 | signal (STOP_SIGNAL, stop_sig); | |
1606 | #endif | |
199b2450 TL |
1607 | printf_unfiltered ("%s", prompt); |
1608 | gdb_flush (gdb_stdout); | |
bd5635a1 RP |
1609 | |
1610 | /* Forget about any previous command -- null line now will do nothing. */ | |
1611 | dont_repeat (); | |
1612 | } | |
1613 | #endif /* STOP_SIGNAL */ | |
1614 | ||
bd5635a1 | 1615 | /* Initialize signal handlers. */ |
f266e564 | 1616 | static void |
30875e1c SG |
1617 | do_nothing (signo) |
1618 | int signo; | |
f266e564 JK |
1619 | { |
1620 | } | |
1621 | ||
bd5635a1 RP |
1622 | static void |
1623 | init_signals () | |
1624 | { | |
bd5635a1 RP |
1625 | signal (SIGINT, request_quit); |
1626 | ||
1627 | /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get | |
1628 | passed to the inferior, which we don't want. It would be | |
1629 | possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but | |
bdbd5f50 | 1630 | on BSD4.3 systems using vfork, that can affect the |
bd5635a1 | 1631 | GDB process as well as the inferior (the signal handling tables |
bdbd5f50 | 1632 | might be in memory, shared between the two). Since we establish |
bd5635a1 RP |
1633 | a handler for SIGQUIT, when we call exec it will set the signal |
1634 | to SIG_DFL for us. */ | |
1635 | signal (SIGQUIT, do_nothing); | |
1636 | if (signal (SIGHUP, do_nothing) != SIG_IGN) | |
1637 | signal (SIGHUP, disconnect); | |
1638 | signal (SIGFPE, float_handler); | |
1eeba686 PB |
1639 | |
1640 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) | |
1641 | signal (SIGWINCH, SIGWINCH_HANDLER); | |
1642 | #endif | |
bd5635a1 RP |
1643 | } |
1644 | \f | |
1645 | /* Read one line from the command input stream `instream' | |
1646 | into the local static buffer `linebuffer' (whose current length | |
1647 | is `linelength'). | |
1648 | The buffer is made bigger as necessary. | |
1649 | Returns the address of the start of the line. | |
1650 | ||
1651 | NULL is returned for end of file. | |
1652 | ||
1653 | *If* the instream == stdin & stdin is a terminal, the line read | |
1654 | is copied into the file line saver (global var char *line, | |
1655 | length linesize) so that it can be duplicated. | |
1656 | ||
1657 | This routine either uses fancy command line editing or | |
1658 | simple input as the user has requested. */ | |
1659 | ||
1660 | char * | |
1661 | command_line_input (prrompt, repeat) | |
1662 | char *prrompt; | |
1663 | int repeat; | |
1664 | { | |
1665 | static char *linebuffer = 0; | |
30875e1c | 1666 | static unsigned linelength = 0; |
bd5635a1 RP |
1667 | register char *p; |
1668 | char *p1; | |
1669 | char *rl; | |
1670 | char *local_prompt = prrompt; | |
1671 | register int c; | |
1672 | char *nline; | |
1673 | char got_eof = 0; | |
1674 | ||
1675 | if (linebuffer == 0) | |
1676 | { | |
1677 | linelength = 80; | |
1678 | linebuffer = (char *) xmalloc (linelength); | |
1679 | } | |
1680 | ||
1681 | p = linebuffer; | |
1682 | ||
1683 | /* Control-C quits instantly if typed while in this loop | |
1684 | since it should not wait until the user types a newline. */ | |
1685 | immediate_quit++; | |
1686 | #ifdef STOP_SIGNAL | |
c307bb11 JK |
1687 | if (job_control) |
1688 | signal (STOP_SIGNAL, stop_sig); | |
bd5635a1 RP |
1689 | #endif |
1690 | ||
1691 | while (1) | |
1692 | { | |
199b2450 | 1693 | /* Reports are that some Sys V's don't flush gdb_stdout/err on reads |
e522fb52 JG |
1694 | from stdin, when stdin/out are sockets rather than ttys. So we |
1695 | have to do it ourselves, to make emacs-gdb and xxgdb work. | |
1696 | On other machines, doing this once per input should be a cheap nop. */ | |
199b2450 TL |
1697 | gdb_flush (gdb_stdout); |
1698 | gdb_flush (gdb_stderr); | |
e522fb52 | 1699 | |
d6bbac39 JK |
1700 | if (source_file_name != NULL) |
1701 | { | |
1702 | ++source_line_number; | |
1703 | sprintf (source_error, | |
1704 | "%s%s:%d: Error in sourced command file:\n", | |
1705 | source_pre_error, | |
1706 | source_file_name, | |
1707 | source_line_number); | |
1708 | error_pre_print = source_error; | |
1709 | } | |
1710 | ||
bd5635a1 RP |
1711 | /* Don't use fancy stuff if not talking to stdin. */ |
1712 | if (command_editing_p && instream == stdin | |
1713 | && ISATTY (instream)) | |
1714 | rl = readline (local_prompt); | |
1715 | else | |
bdbd5f50 | 1716 | rl = gdb_readline (local_prompt); |
bd5635a1 RP |
1717 | |
1718 | if (!rl || rl == (char *) EOF) | |
1719 | { | |
1720 | got_eof = 1; | |
1721 | break; | |
1722 | } | |
1723 | if (strlen(rl) + 1 + (p - linebuffer) > linelength) | |
1724 | { | |
1725 | linelength = strlen(rl) + 1 + (p - linebuffer); | |
1726 | nline = (char *) xrealloc (linebuffer, linelength); | |
1727 | p += nline - linebuffer; | |
1728 | linebuffer = nline; | |
1729 | } | |
1730 | p1 = rl; | |
1731 | /* Copy line. Don't copy null at end. (Leaves line alone | |
1732 | if this was just a newline) */ | |
1733 | while (*p1) | |
1734 | *p++ = *p1++; | |
1735 | ||
1736 | free (rl); /* Allocated in readline. */ | |
1737 | ||
1738 | if (p == linebuffer || *(p - 1) != '\\') | |
1739 | break; | |
1740 | ||
1741 | p--; /* Put on top of '\'. */ | |
1742 | local_prompt = (char *) 0; | |
1743 | } | |
1744 | ||
1745 | #ifdef STOP_SIGNAL | |
c307bb11 JK |
1746 | if (job_control) |
1747 | signal (STOP_SIGNAL, SIG_DFL); | |
bd5635a1 RP |
1748 | #endif |
1749 | immediate_quit--; | |
1750 | ||
1751 | if (got_eof) | |
1752 | return NULL; | |
1753 | ||
1754 | /* Do history expansion if that is wished. */ | |
1755 | if (history_expansion_p && instream == stdin | |
1756 | && ISATTY (instream)) | |
1757 | { | |
1758 | char *history_value; | |
1759 | int expanded; | |
1760 | ||
1761 | *p = '\0'; /* Insert null now. */ | |
1762 | expanded = history_expand (linebuffer, &history_value); | |
1763 | if (expanded) | |
1764 | { | |
1765 | /* Print the changes. */ | |
199b2450 | 1766 | printf_unfiltered ("%s\n", history_value); |
bd5635a1 RP |
1767 | |
1768 | /* If there was an error, call this function again. */ | |
1769 | if (expanded < 0) | |
1770 | { | |
1771 | free (history_value); | |
1772 | return command_line_input (prrompt, repeat); | |
1773 | } | |
1774 | if (strlen (history_value) > linelength) | |
1775 | { | |
1776 | linelength = strlen (history_value) + 1; | |
1777 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
1778 | } | |
1779 | strcpy (linebuffer, history_value); | |
1780 | p = linebuffer + strlen(linebuffer); | |
1781 | free (history_value); | |
1782 | } | |
1783 | } | |
1784 | ||
1785 | /* If we just got an empty line, and that is supposed | |
1786 | to repeat the previous command, return the value in the | |
1787 | global buffer. */ | |
1788 | if (repeat) | |
1789 | { | |
1790 | if (p == linebuffer) | |
1791 | return line; | |
1792 | p1 = linebuffer; | |
1793 | while (*p1 == ' ' || *p1 == '\t') | |
1794 | p1++; | |
1795 | if (!*p1) | |
1796 | return line; | |
1797 | } | |
1798 | ||
1799 | *p = 0; | |
1800 | ||
1801 | /* Add line to history if appropriate. */ | |
1802 | if (instream == stdin | |
1803 | && ISATTY (stdin) && *linebuffer) | |
1804 | add_history (linebuffer); | |
1805 | ||
1806 | /* Note: lines consisting soley of comments are added to the command | |
1807 | history. This is useful when you type a command, and then | |
1808 | realize you don't want to execute it quite yet. You can comment | |
1809 | out the command and then later fetch it from the value history | |
1810 | and remove the '#'. The kill ring is probably better, but some | |
1811 | people are in the habit of commenting things out. */ | |
1812 | p1 = linebuffer; | |
1813 | while ((c = *p1++) != '\0') | |
1814 | { | |
1815 | if (c == '"') | |
1816 | while ((c = *p1++) != '"') | |
1817 | { | |
1818 | /* Make sure an escaped '"' doesn't make us think the string | |
1819 | is ended. */ | |
1820 | if (c == '\\') | |
1821 | parse_escape (&p1); | |
1822 | if (c == '\0') | |
1823 | break; | |
1824 | } | |
1825 | else if (c == '\'') | |
1826 | while ((c = *p1++) != '\'') | |
1827 | { | |
1828 | /* Make sure an escaped '\'' doesn't make us think the string | |
1829 | is ended. */ | |
1830 | if (c == '\\') | |
1831 | parse_escape (&p1); | |
1832 | if (c == '\0') | |
1833 | break; | |
1834 | } | |
1835 | else if (c == '#') | |
1836 | { | |
1837 | /* Found a comment. */ | |
1838 | p1[-1] = '\0'; | |
1839 | break; | |
1840 | } | |
1841 | } | |
1842 | ||
1843 | /* Save into global buffer if appropriate. */ | |
1844 | if (repeat) | |
1845 | { | |
1846 | if (linelength > linesize) | |
1847 | { | |
1848 | line = xrealloc (line, linelength); | |
1849 | linesize = linelength; | |
1850 | } | |
1851 | strcpy (line, linebuffer); | |
1852 | return line; | |
1853 | } | |
1854 | ||
1855 | return linebuffer; | |
1856 | } | |
1857 | \f | |
1858 | /* Read lines from the input stream | |
1859 | and accumulate them in a chain of struct command_line's | |
1860 | which is then returned. */ | |
1861 | ||
1862 | struct command_line * | |
1863 | read_command_lines () | |
1864 | { | |
1865 | struct command_line *first = 0; | |
1866 | register struct command_line *next, *tail = 0; | |
1867 | register char *p, *p1; | |
1868 | struct cleanup *old_chain = 0; | |
1869 | ||
1870 | while (1) | |
1871 | { | |
1872 | dont_repeat (); | |
30875e1c | 1873 | p = command_line_input ((char *) NULL, instream == stdin); |
bd5635a1 RP |
1874 | if (p == NULL) |
1875 | /* Treat end of file like "end". */ | |
1876 | break; | |
1877 | ||
1878 | /* Remove leading and trailing blanks. */ | |
1879 | while (*p == ' ' || *p == '\t') p++; | |
1880 | p1 = p + strlen (p); | |
1881 | while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) p1--; | |
1882 | ||
1883 | /* Is this "end"? */ | |
1884 | if (p1 - p == 3 && !strncmp (p, "end", 3)) | |
1885 | break; | |
1886 | ||
1887 | /* No => add this line to the chain of command lines. */ | |
1888 | next = (struct command_line *) xmalloc (sizeof (struct command_line)); | |
1889 | next->line = savestring (p, p1 - p); | |
1890 | next->next = 0; | |
1891 | if (tail) | |
1892 | { | |
1893 | tail->next = next; | |
1894 | } | |
1895 | else | |
1896 | { | |
1897 | /* We just read the first line. | |
1898 | From now on, arrange to throw away the lines we have | |
1899 | if we quit or get an error while inside this function. */ | |
1900 | first = next; | |
1901 | old_chain = make_cleanup (free_command_lines, &first); | |
1902 | } | |
1903 | tail = next; | |
1904 | } | |
1905 | ||
1906 | dont_repeat (); | |
1907 | ||
1908 | /* Now we are about to return the chain to our caller, | |
1909 | so freeing it becomes his responsibility. */ | |
1910 | if (first) | |
1911 | discard_cleanups (old_chain); | |
1912 | return first; | |
1913 | } | |
1914 | ||
1915 | /* Free a chain of struct command_line's. */ | |
1916 | ||
1917 | void | |
1918 | free_command_lines (lptr) | |
1919 | struct command_line **lptr; | |
1920 | { | |
1921 | register struct command_line *l = *lptr; | |
1922 | register struct command_line *next; | |
1923 | ||
1924 | while (l) | |
1925 | { | |
1926 | next = l->next; | |
1927 | free (l->line); | |
51b57ded | 1928 | free ((PTR)l); |
bd5635a1 RP |
1929 | l = next; |
1930 | } | |
1931 | } | |
1932 | \f | |
1933 | /* Add an element to the list of info subcommands. */ | |
1934 | ||
1935 | void | |
1936 | add_info (name, fun, doc) | |
1937 | char *name; | |
30875e1c | 1938 | void (*fun) PARAMS ((char *, int)); |
bd5635a1 RP |
1939 | char *doc; |
1940 | { | |
1941 | add_cmd (name, no_class, fun, doc, &infolist); | |
1942 | } | |
1943 | ||
1944 | /* Add an alias to the list of info subcommands. */ | |
1945 | ||
1946 | void | |
1947 | add_info_alias (name, oldname, abbrev_flag) | |
1948 | char *name; | |
1949 | char *oldname; | |
1950 | int abbrev_flag; | |
1951 | { | |
1952 | add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
1953 | } | |
1954 | ||
1955 | /* The "info" command is defined as a prefix, with allow_unknown = 0. | |
1956 | Therefore, its own definition is called only for "info" with no args. */ | |
1957 | ||
1958 | /* ARGSUSED */ | |
1959 | static void | |
1960 | info_command (arg, from_tty) | |
1961 | char *arg; | |
1962 | int from_tty; | |
1963 | { | |
199b2450 TL |
1964 | printf_unfiltered ("\"info\" must be followed by the name of an info command.\n"); |
1965 | help_list (infolist, "info ", -1, gdb_stdout); | |
bd5635a1 RP |
1966 | } |
1967 | ||
1968 | /* The "show" command with no arguments shows all the settings. */ | |
1969 | ||
1970 | /* ARGSUSED */ | |
1971 | static void | |
1972 | show_command (arg, from_tty) | |
1973 | char *arg; | |
1974 | int from_tty; | |
1975 | { | |
1976 | cmd_show_list (showlist, from_tty, ""); | |
1977 | } | |
1978 | \f | |
1979 | /* Add an element to the list of commands. */ | |
1980 | ||
1981 | void | |
1982 | add_com (name, class, fun, doc) | |
1983 | char *name; | |
1984 | enum command_class class; | |
30875e1c | 1985 | void (*fun) PARAMS ((char *, int)); |
bd5635a1 RP |
1986 | char *doc; |
1987 | { | |
1988 | add_cmd (name, class, fun, doc, &cmdlist); | |
1989 | } | |
1990 | ||
1991 | /* Add an alias or abbreviation command to the list of commands. */ | |
1992 | ||
1993 | void | |
1994 | add_com_alias (name, oldname, class, abbrev_flag) | |
1995 | char *name; | |
1996 | char *oldname; | |
1997 | enum command_class class; | |
1998 | int abbrev_flag; | |
1999 | { | |
2000 | add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
2001 | } | |
2002 | ||
2003 | void | |
2004 | error_no_arg (why) | |
2005 | char *why; | |
2006 | { | |
2007 | error ("Argument required (%s).", why); | |
2008 | } | |
2009 | ||
e1ce8aa5 | 2010 | /* ARGSUSED */ |
bd5635a1 RP |
2011 | static void |
2012 | help_command (command, from_tty) | |
2013 | char *command; | |
2014 | int from_tty; /* Ignored */ | |
2015 | { | |
199b2450 | 2016 | help_cmd (command, gdb_stdout); |
bd5635a1 RP |
2017 | } |
2018 | \f | |
2019 | static void | |
2020 | validate_comname (comname) | |
2021 | char *comname; | |
2022 | { | |
2023 | register char *p; | |
2024 | ||
2025 | if (comname == 0) | |
2026 | error_no_arg ("name of command to define"); | |
2027 | ||
2028 | p = comname; | |
2029 | while (*p) | |
2030 | { | |
c2e4669f | 2031 | if (!isalnum(*p) && *p != '-') |
bd5635a1 RP |
2032 | error ("Junk in argument list: \"%s\"", p); |
2033 | p++; | |
2034 | } | |
2035 | } | |
2036 | ||
51b57ded FF |
2037 | /* This is just a placeholder in the command data structures. */ |
2038 | static void | |
2039 | user_defined_command (ignore, from_tty) | |
2040 | char *ignore; | |
2041 | int from_tty; | |
2042 | { | |
2043 | } | |
2044 | ||
bd5635a1 RP |
2045 | static void |
2046 | define_command (comname, from_tty) | |
2047 | char *comname; | |
2048 | int from_tty; | |
2049 | { | |
2050 | register struct command_line *cmds; | |
fb29d681 | 2051 | register struct cmd_list_element *c, *newc, *hookc = 0; |
bd5635a1 | 2052 | char *tem = comname; |
b5af69c3 JG |
2053 | #define HOOK_STRING "hook-" |
2054 | #define HOOK_LEN 5 | |
bd5635a1 RP |
2055 | |
2056 | validate_comname (comname); | |
2057 | ||
afe4ca15 | 2058 | /* Look it up, and verify that we got an exact match. */ |
bd5635a1 | 2059 | c = lookup_cmd (&tem, cmdlist, "", -1, 1); |
2e4964ad | 2060 | if (c && !STREQ (comname, c->name)) |
afe4ca15 JG |
2061 | c = 0; |
2062 | ||
bd5635a1 RP |
2063 | if (c) |
2064 | { | |
2065 | if (c->class == class_user || c->class == class_alias) | |
2066 | tem = "Redefine command \"%s\"? "; | |
2067 | else | |
2068 | tem = "Really redefine built-in command \"%s\"? "; | |
c2e4669f JG |
2069 | if (!query (tem, c->name)) |
2070 | error ("Command \"%s\" not redefined.", c->name); | |
bd5635a1 RP |
2071 | } |
2072 | ||
b5af69c3 JG |
2073 | /* If this new command is a hook, then mark the command which it |
2074 | is hooking. Note that we allow hooking `help' commands, so that | |
2075 | we can hook the `stop' pseudo-command. */ | |
2076 | ||
2077 | if (!strncmp (comname, HOOK_STRING, HOOK_LEN)) | |
2078 | { | |
2079 | /* Look up cmd it hooks, and verify that we got an exact match. */ | |
2080 | tem = comname+HOOK_LEN; | |
2081 | hookc = lookup_cmd (&tem, cmdlist, "", -1, 0); | |
2e4964ad | 2082 | if (hookc && !STREQ (comname+HOOK_LEN, hookc->name)) |
b5af69c3 JG |
2083 | hookc = 0; |
2084 | if (!hookc) | |
2085 | { | |
2086 | warning ("Your new `%s' command does not hook any existing command.", | |
2087 | comname); | |
2088 | if (!query ("Proceed? ", (char *)0)) | |
2089 | error ("Not confirmed."); | |
2090 | } | |
2091 | } | |
2092 | ||
c2e4669f JG |
2093 | comname = savestring (comname, strlen (comname)); |
2094 | ||
b5af69c3 | 2095 | /* If the rest of the commands will be case insensitive, this one |
c2e4669f JG |
2096 | should behave in the same manner. */ |
2097 | for (tem = comname; *tem; tem++) | |
2098 | if (isupper(*tem)) *tem = tolower(*tem); | |
2099 | ||
bd5635a1 RP |
2100 | if (from_tty) |
2101 | { | |
199b2450 | 2102 | printf_unfiltered ("Type commands for definition of \"%s\".\n\ |
bd5635a1 | 2103 | End with a line saying just \"end\".\n", comname); |
199b2450 | 2104 | gdb_flush (gdb_stdout); |
bd5635a1 | 2105 | } |
bd5635a1 RP |
2106 | |
2107 | cmds = read_command_lines (); | |
2108 | ||
2109 | if (c && c->class == class_user) | |
2110 | free_command_lines (&c->user_commands); | |
2111 | ||
51b57ded | 2112 | newc = add_cmd (comname, class_user, user_defined_command, |
bd5635a1 RP |
2113 | (c && c->class == class_user) |
2114 | ? c->doc : savestring ("User-defined.", 13), &cmdlist); | |
2115 | newc->user_commands = cmds; | |
b5af69c3 JG |
2116 | |
2117 | /* If this new command is a hook, then mark both commands as being | |
2118 | tied. */ | |
2119 | if (hookc) | |
2120 | { | |
2121 | hookc->hook = newc; /* Target gets hooked. */ | |
2122 | newc->hookee = hookc; /* We are marked as hooking target cmd. */ | |
2123 | } | |
bd5635a1 RP |
2124 | } |
2125 | ||
2126 | static void | |
2127 | document_command (comname, from_tty) | |
2128 | char *comname; | |
2129 | int from_tty; | |
2130 | { | |
2131 | struct command_line *doclines; | |
2132 | register struct cmd_list_element *c; | |
2133 | char *tem = comname; | |
2134 | ||
2135 | validate_comname (comname); | |
2136 | ||
2137 | c = lookup_cmd (&tem, cmdlist, "", 0, 1); | |
2138 | ||
2139 | if (c->class != class_user) | |
2140 | error ("Command \"%s\" is built-in.", comname); | |
2141 | ||
2142 | if (from_tty) | |
199b2450 | 2143 | printf_unfiltered ("Type documentation for \"%s\".\n\ |
bd5635a1 RP |
2144 | End with a line saying just \"end\".\n", comname); |
2145 | ||
2146 | doclines = read_command_lines (); | |
2147 | ||
2148 | if (c->doc) free (c->doc); | |
2149 | ||
2150 | { | |
2151 | register struct command_line *cl1; | |
2152 | register int len = 0; | |
2153 | ||
2154 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2155 | len += strlen (cl1->line) + 1; | |
2156 | ||
2157 | c->doc = (char *) xmalloc (len + 1); | |
2158 | *c->doc = 0; | |
2159 | ||
2160 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2161 | { | |
2162 | strcat (c->doc, cl1->line); | |
2163 | if (cl1->next) | |
2164 | strcat (c->doc, "\n"); | |
2165 | } | |
2166 | } | |
2167 | ||
2168 | free_command_lines (&doclines); | |
2169 | } | |
2170 | \f | |
2171 | static void | |
81066208 | 2172 | print_gnu_advertisement() |
bd5635a1 | 2173 | { |
199b2450 | 2174 | printf_unfiltered ("\ |
bd5635a1 | 2175 | GDB is free software and you are welcome to distribute copies of it\n\ |
afe4ca15 JG |
2176 | under certain conditions; type \"show copying\" to see the conditions.\n\ |
2177 | There is absolutely no warranty for GDB; type \"show warranty\" for details.\n\ | |
81066208 JG |
2178 | "); |
2179 | } | |
2180 | ||
2181 | static void | |
fb29d681 | 2182 | print_gdb_version (stream) |
199b2450 | 2183 | GDB_FILE *stream; |
81066208 | 2184 | { |
fb29d681 | 2185 | fprintf_filtered (stream, "\ |
a28d16d3 | 2186 | GDB %s (%s", version, host_name); |
57cb418a | 2187 | |
a28d16d3 JK |
2188 | if (!STREQ (host_name, target_name)) |
2189 | fprintf_filtered (stream, " --target %s", target_name); | |
57cb418a RP |
2190 | |
2191 | fprintf_filtered (stream, "), "); | |
2192 | wrap_here(""); | |
8b564df8 | 2193 | fprintf_filtered (stream, "Copyright 1994 Free Software Foundation, Inc."); |
bd5635a1 RP |
2194 | } |
2195 | ||
e1ce8aa5 | 2196 | /* ARGSUSED */ |
bd5635a1 | 2197 | static void |
f266e564 | 2198 | show_version (args, from_tty) |
bd5635a1 RP |
2199 | char *args; |
2200 | int from_tty; | |
2201 | { | |
2202 | immediate_quit++; | |
81066208 | 2203 | print_gnu_advertisement (); |
199b2450 | 2204 | print_gdb_version (gdb_stdout); |
81066208 | 2205 | printf_filtered ("\n"); |
bd5635a1 RP |
2206 | immediate_quit--; |
2207 | } | |
2208 | \f | |
2209 | /* xgdb calls this to reprint the usual GDB prompt. */ | |
2210 | ||
2211 | void | |
2212 | print_prompt () | |
2213 | { | |
199b2450 TL |
2214 | printf_unfiltered ("%s", prompt); |
2215 | gdb_flush (gdb_stdout); | |
bd5635a1 RP |
2216 | } |
2217 | \f | |
2218 | static void | |
2219 | quit_command (args, from_tty) | |
2220 | char *args; | |
2221 | int from_tty; | |
2222 | { | |
f266e564 | 2223 | if (inferior_pid != 0 && target_has_execution) |
bd5635a1 | 2224 | { |
6fe90fc8 | 2225 | if (attach_flag) |
bd5635a1 | 2226 | { |
6fe90fc8 | 2227 | if (query ("The program is running. Quit anyway (and detach it)? ")) |
597dc86b SG |
2228 | target_detach (args, from_tty); |
2229 | else | |
6fe90fc8 | 2230 | error ("Not confirmed."); |
bd5635a1 RP |
2231 | } |
2232 | else | |
6fe90fc8 JK |
2233 | { |
2234 | if (query ("The program is running. Quit anyway (and kill it)? ")) | |
2235 | target_kill (); | |
2236 | else | |
2237 | error ("Not confirmed."); | |
2238 | } | |
bd5635a1 RP |
2239 | } |
2240 | /* Save the history information if it is appropriate to do so. */ | |
2241 | if (write_history_p && history_filename) | |
2242 | write_history (history_filename); | |
2243 | exit (0); | |
2244 | } | |
2245 | ||
ee0613d1 JG |
2246 | /* Returns whether GDB is running on a terminal and whether the user |
2247 | desires that questions be asked of them on that terminal. */ | |
2248 | ||
bd5635a1 RP |
2249 | int |
2250 | input_from_terminal_p () | |
2251 | { | |
c307bb11 | 2252 | return gdb_has_a_terminal () && (instream == stdin) & caution; |
bd5635a1 RP |
2253 | } |
2254 | \f | |
e1ce8aa5 | 2255 | /* ARGSUSED */ |
bd5635a1 RP |
2256 | static void |
2257 | pwd_command (args, from_tty) | |
2258 | char *args; | |
2259 | int from_tty; | |
2260 | { | |
2261 | if (args) error ("The \"pwd\" command does not take an argument: %s", args); | |
f7402c04 | 2262 | getcwd (dirbuf, sizeof (dirbuf)); |
bd5635a1 | 2263 | |
2e4964ad | 2264 | if (!STREQ (dirbuf, current_directory)) |
199b2450 | 2265 | printf_unfiltered ("Working directory %s\n (canonically %s).\n", |
bd5635a1 RP |
2266 | current_directory, dirbuf); |
2267 | else | |
199b2450 | 2268 | printf_unfiltered ("Working directory %s.\n", current_directory); |
bd5635a1 RP |
2269 | } |
2270 | ||
2271 | static void | |
2272 | cd_command (dir, from_tty) | |
2273 | char *dir; | |
2274 | int from_tty; | |
2275 | { | |
2276 | int len; | |
c307bb11 JK |
2277 | /* Found something other than leading repetitions of "/..". */ |
2278 | int found_real_path; | |
2279 | char *p; | |
bd5635a1 | 2280 | |
9107291d JK |
2281 | /* If the new directory is absolute, repeat is a no-op; if relative, |
2282 | repeat might be useful but is more likely to be a mistake. */ | |
2283 | dont_repeat (); | |
2284 | ||
bd5635a1 RP |
2285 | if (dir == 0) |
2286 | error_no_arg ("new working directory"); | |
2287 | ||
2288 | dir = tilde_expand (dir); | |
2289 | make_cleanup (free, dir); | |
2290 | ||
ee0613d1 JG |
2291 | if (chdir (dir) < 0) |
2292 | perror_with_name (dir); | |
2293 | ||
bd5635a1 RP |
2294 | len = strlen (dir); |
2295 | dir = savestring (dir, len - (len > 1 && dir[len-1] == '/')); | |
2296 | if (dir[0] == '/') | |
2297 | current_directory = dir; | |
2298 | else | |
2299 | { | |
c307bb11 JK |
2300 | if (current_directory[0] == '/' && current_directory[1] == '\0') |
2301 | current_directory = concat (current_directory, dir, NULL); | |
2302 | else | |
2303 | current_directory = concat (current_directory, "/", dir, NULL); | |
bd5635a1 RP |
2304 | free (dir); |
2305 | } | |
2306 | ||
2307 | /* Now simplify any occurrences of `.' and `..' in the pathname. */ | |
2308 | ||
c307bb11 JK |
2309 | found_real_path = 0; |
2310 | for (p = current_directory; *p;) | |
bd5635a1 | 2311 | { |
c307bb11 JK |
2312 | if (p[0] == '/' && p[1] == '.' && (p[2] == 0 || p[2] == '/')) |
2313 | strcpy (p, p + 2); | |
2314 | else if (p[0] == '/' && p[1] == '.' && p[2] == '.' | |
2315 | && (p[3] == 0 || p[3] == '/')) | |
bd5635a1 | 2316 | { |
c307bb11 | 2317 | if (found_real_path) |
bd5635a1 | 2318 | { |
c307bb11 JK |
2319 | /* Search backwards for the directory just before the "/.." |
2320 | and obliterate it and the "/..". */ | |
bd5635a1 | 2321 | char *q = p; |
c307bb11 JK |
2322 | while (q != current_directory && q[-1] != '/') |
2323 | --q; | |
2324 | ||
2325 | if (q == current_directory) | |
2326 | /* current_directory is | |
2327 | a relative pathname ("can't happen"--leave it alone). */ | |
2328 | ++p; | |
2329 | else | |
bd5635a1 | 2330 | { |
c307bb11 JK |
2331 | strcpy (q - 1, p + 3); |
2332 | p = q - 1; | |
bd5635a1 RP |
2333 | } |
2334 | } | |
c307bb11 JK |
2335 | else |
2336 | /* We are dealing with leading repetitions of "/..", for example | |
2337 | "/../..", which is the Mach super-root. */ | |
2338 | p += 3; | |
2339 | } | |
2340 | else | |
2341 | { | |
2342 | found_real_path = 1; | |
2343 | ++p; | |
bd5635a1 RP |
2344 | } |
2345 | } | |
2346 | ||
bd5635a1 RP |
2347 | forget_cached_source_info (); |
2348 | ||
2349 | if (from_tty) | |
2350 | pwd_command ((char *) 0, 1); | |
2351 | } | |
2352 | \f | |
d6bbac39 JK |
2353 | struct source_cleanup_lines_args { |
2354 | int old_line; | |
2355 | char *old_file; | |
2356 | char *old_pre_error; | |
2357 | char *old_error_pre_print; | |
2358 | }; | |
2359 | ||
2360 | static void | |
2361 | source_cleanup_lines (args) | |
2362 | PTR args; | |
2363 | { | |
2364 | struct source_cleanup_lines_args *p = | |
2365 | (struct source_cleanup_lines_args *)args; | |
2366 | source_line_number = p->old_line; | |
2367 | source_file_name = p->old_file; | |
2368 | source_pre_error = p->old_pre_error; | |
2369 | error_pre_print = p->old_error_pre_print; | |
2370 | } | |
2371 | ||
e1ce8aa5 | 2372 | /* ARGSUSED */ |
bd5635a1 RP |
2373 | static void |
2374 | source_command (args, from_tty) | |
2375 | char *args; | |
2376 | int from_tty; | |
2377 | { | |
2378 | FILE *stream; | |
d6bbac39 | 2379 | struct cleanup *old_cleanups; |
bd5635a1 | 2380 | char *file = args; |
d6bbac39 JK |
2381 | struct source_cleanup_lines_args old_lines; |
2382 | int needed_length; | |
bd5635a1 | 2383 | |
6fe90fc8 JK |
2384 | if (file == NULL) |
2385 | { | |
2386 | error ("source command requires pathname of file to source."); | |
2387 | } | |
bd5635a1 RP |
2388 | |
2389 | file = tilde_expand (file); | |
d6bbac39 | 2390 | old_cleanups = make_cleanup (free, file); |
bd5635a1 | 2391 | |
6fe90fc8 | 2392 | stream = fopen (file, FOPEN_RT); |
bd5635a1 RP |
2393 | if (stream == 0) |
2394 | perror_with_name (file); | |
2395 | ||
d6bbac39 JK |
2396 | make_cleanup (fclose, stream); |
2397 | ||
2398 | old_lines.old_line = source_line_number; | |
2399 | old_lines.old_file = source_file_name; | |
2400 | old_lines.old_pre_error = source_pre_error; | |
2401 | old_lines.old_error_pre_print = error_pre_print; | |
2402 | make_cleanup (source_cleanup_lines, &old_lines); | |
2403 | source_line_number = 0; | |
2404 | source_file_name = file; | |
2405 | source_pre_error = error_pre_print == NULL ? "" : error_pre_print; | |
2406 | source_pre_error = savestring (source_pre_error, strlen (source_pre_error)); | |
2407 | make_cleanup (free, source_pre_error); | |
2408 | /* This will get set every time we read a line. So it won't stay "" for | |
2409 | long. */ | |
2410 | error_pre_print = ""; | |
2411 | ||
2412 | needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80; | |
2413 | if (source_error_allocated < needed_length) | |
2414 | { | |
2415 | source_error_allocated *= 2; | |
2416 | if (source_error_allocated < needed_length) | |
2417 | source_error_allocated = needed_length; | |
2418 | if (source_error == NULL) | |
2419 | source_error = xmalloc (source_error_allocated); | |
2420 | else | |
2421 | source_error = xrealloc (source_error, source_error_allocated); | |
2422 | } | |
bd5635a1 RP |
2423 | |
2424 | read_command_file (stream); | |
2425 | ||
d6bbac39 | 2426 | do_cleanups (old_cleanups); |
bd5635a1 RP |
2427 | } |
2428 | ||
2429 | /* ARGSUSED */ | |
2430 | static void | |
2431 | echo_command (text, from_tty) | |
2432 | char *text; | |
2433 | int from_tty; | |
2434 | { | |
2435 | char *p = text; | |
2436 | register int c; | |
2437 | ||
2438 | if (text) | |
a8a69e63 | 2439 | while ((c = *p++) != '\0') |
bd5635a1 RP |
2440 | { |
2441 | if (c == '\\') | |
2442 | { | |
2443 | /* \ at end of argument is used after spaces | |
2444 | so they won't be lost. */ | |
2445 | if (*p == 0) | |
2446 | return; | |
2447 | ||
2448 | c = parse_escape (&p); | |
2449 | if (c >= 0) | |
afe4ca15 | 2450 | printf_filtered ("%c", c); |
bd5635a1 RP |
2451 | } |
2452 | else | |
afe4ca15 | 2453 | printf_filtered ("%c", c); |
bd5635a1 | 2454 | } |
afe4ca15 JG |
2455 | |
2456 | /* Force this output to appear now. */ | |
2457 | wrap_here (""); | |
199b2450 | 2458 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
2459 | } |
2460 | ||
bd5635a1 RP |
2461 | \f |
2462 | /* Functions to manipulate command line editing control variables. */ | |
2463 | ||
f266e564 | 2464 | /* Number of commands to print in each call to show_commands. */ |
bd5635a1 RP |
2465 | #define Hist_print 10 |
2466 | static void | |
f266e564 | 2467 | show_commands (args, from_tty) |
bd5635a1 RP |
2468 | char *args; |
2469 | int from_tty; | |
2470 | { | |
2471 | /* Index for history commands. Relative to history_base. */ | |
2472 | int offset; | |
2473 | ||
2474 | /* Number of the history entry which we are planning to display next. | |
2475 | Relative to history_base. */ | |
2476 | static int num = 0; | |
2477 | ||
2478 | /* The first command in the history which doesn't exist (i.e. one more | |
2479 | than the number of the last command). Relative to history_base. */ | |
2480 | int hist_len; | |
2481 | ||
8b564df8 | 2482 | extern HIST_ENTRY *history_get PARAMS ((int)); |
bd5635a1 RP |
2483 | extern int history_base; |
2484 | ||
bd5635a1 RP |
2485 | /* Print out some of the commands from the command history. */ |
2486 | /* First determine the length of the history list. */ | |
2487 | hist_len = history_size; | |
2488 | for (offset = 0; offset < history_size; offset++) | |
2489 | { | |
2490 | if (!history_get (history_base + offset)) | |
2491 | { | |
2492 | hist_len = offset; | |
2493 | break; | |
2494 | } | |
2495 | } | |
2496 | ||
2497 | if (args) | |
2498 | { | |
2499 | if (args[0] == '+' && args[1] == '\0') | |
2500 | /* "info editing +" should print from the stored position. */ | |
2501 | ; | |
2502 | else | |
2503 | /* "info editing <exp>" should print around command number <exp>. */ | |
2504 | num = (parse_and_eval_address (args) - history_base) - Hist_print / 2; | |
2505 | } | |
ee0613d1 | 2506 | /* "show commands" means print the last Hist_print commands. */ |
bd5635a1 RP |
2507 | else |
2508 | { | |
2509 | num = hist_len - Hist_print; | |
2510 | } | |
2511 | ||
2512 | if (num < 0) | |
2513 | num = 0; | |
2514 | ||
2515 | /* If there are at least Hist_print commands, we want to display the last | |
2516 | Hist_print rather than, say, the last 6. */ | |
2517 | if (hist_len - num < Hist_print) | |
2518 | { | |
2519 | num = hist_len - Hist_print; | |
2520 | if (num < 0) | |
2521 | num = 0; | |
2522 | } | |
2523 | ||
bd5635a1 RP |
2524 | for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) |
2525 | { | |
2526 | printf_filtered ("%5d %s\n", history_base + offset, | |
2527 | (history_get (history_base + offset))->line); | |
2528 | } | |
2529 | ||
2530 | /* The next command we want to display is the next one that we haven't | |
2531 | displayed yet. */ | |
2532 | num += Hist_print; | |
2533 | ||
2534 | /* If the user repeats this command with return, it should do what | |
ee0613d1 JG |
2535 | "show commands +" does. This is unnecessary if arg is null, |
2536 | because "show commands +" is not useful after "show commands". */ | |
bd5635a1 RP |
2537 | if (from_tty && args) |
2538 | { | |
2539 | args[0] = '+'; | |
2540 | args[1] = '\0'; | |
2541 | } | |
2542 | } | |
2543 | ||
2544 | /* Called by do_setshow_command. */ | |
e1ce8aa5 | 2545 | /* ARGSUSED */ |
bd5635a1 RP |
2546 | static void |
2547 | set_history_size_command (args, from_tty, c) | |
2548 | char *args; | |
2549 | int from_tty; | |
2550 | struct cmd_list_element *c; | |
2551 | { | |
6fe90fc8 | 2552 | if (history_size == INT_MAX) |
bd5635a1 | 2553 | unstifle_history (); |
c2e4669f | 2554 | else if (history_size >= 0) |
bd5635a1 | 2555 | stifle_history (history_size); |
c2e4669f JG |
2556 | else |
2557 | { | |
6fe90fc8 | 2558 | history_size = INT_MAX; |
c2e4669f JG |
2559 | error ("History size must be non-negative"); |
2560 | } | |
bd5635a1 RP |
2561 | } |
2562 | ||
e1ce8aa5 | 2563 | /* ARGSUSED */ |
bd5635a1 RP |
2564 | static void |
2565 | set_history (args, from_tty) | |
2566 | char *args; | |
2567 | int from_tty; | |
2568 | { | |
199b2450 TL |
2569 | printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n"); |
2570 | help_list (sethistlist, "set history ", -1, gdb_stdout); | |
bd5635a1 RP |
2571 | } |
2572 | ||
e1ce8aa5 | 2573 | /* ARGSUSED */ |
bd5635a1 RP |
2574 | static void |
2575 | show_history (args, from_tty) | |
2576 | char *args; | |
2577 | int from_tty; | |
2578 | { | |
f266e564 | 2579 | cmd_show_list (showhistlist, from_tty, ""); |
bd5635a1 RP |
2580 | } |
2581 | ||
2582 | int info_verbose = 0; /* Default verbose msgs off */ | |
2583 | ||
2584 | /* Called by do_setshow_command. An elaborate joke. */ | |
e1ce8aa5 | 2585 | /* ARGSUSED */ |
bd5635a1 RP |
2586 | static void |
2587 | set_verbose (args, from_tty, c) | |
2588 | char *args; | |
2589 | int from_tty; | |
2590 | struct cmd_list_element *c; | |
2591 | { | |
2592 | char *cmdname = "verbose"; | |
2593 | struct cmd_list_element *showcmd; | |
2594 | ||
2595 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
2596 | ||
2597 | if (info_verbose) | |
2598 | { | |
2599 | c->doc = "Set verbose printing of informational messages."; | |
2600 | showcmd->doc = "Show verbose printing of informational messages."; | |
2601 | } | |
2602 | else | |
2603 | { | |
2604 | c->doc = "Set verbosity."; | |
2605 | showcmd->doc = "Show verbosity."; | |
2606 | } | |
2607 | } | |
2608 | ||
2609 | static void | |
30875e1c SG |
2610 | float_handler (signo) |
2611 | int signo; | |
bd5635a1 RP |
2612 | { |
2613 | /* This message is based on ANSI C, section 4.7. Note that integer | |
2614 | divide by zero causes this, so "float" is a misnomer. */ | |
76a0ffb4 | 2615 | signal (SIGFPE, float_handler); |
bd5635a1 RP |
2616 | error ("Erroneous arithmetic operation."); |
2617 | } | |
2618 | ||
2619 | /* Return whether we are running a batch file or from terminal. */ | |
2620 | int | |
2621 | batch_mode () | |
2622 | { | |
2623 | return !(instream == stdin && ISATTY (stdin)); | |
2624 | } | |
2625 | ||
2626 | \f | |
2627 | static void | |
fc61e9ee | 2628 | init_cmd_lists () |
bd5635a1 | 2629 | { |
0239d9b3 FF |
2630 | cmdlist = NULL; |
2631 | infolist = NULL; | |
2632 | enablelist = NULL; | |
2633 | disablelist = NULL; | |
2634 | deletelist = NULL; | |
2635 | enablebreaklist = NULL; | |
2636 | setlist = NULL; | |
2637 | unsetlist = NULL; | |
bd5635a1 | 2638 | showlist = NULL; |
0239d9b3 | 2639 | sethistlist = NULL; |
bd5635a1 | 2640 | showhistlist = NULL; |
0239d9b3 FF |
2641 | unsethistlist = NULL; |
2642 | #if MAINTENANCE_CMDS | |
2643 | maintenancelist = NULL; | |
2644 | maintenanceinfolist = NULL; | |
a8e033f2 | 2645 | maintenanceprintlist = NULL; |
0239d9b3 FF |
2646 | #endif |
2647 | setprintlist = NULL; | |
2648 | showprintlist = NULL; | |
2649 | setchecklist = NULL; | |
2650 | showchecklist = NULL; | |
bd5635a1 RP |
2651 | } |
2652 | ||
8b3c897a SG |
2653 | /* Init the history buffer. Note that we are called after the init file(s) |
2654 | * have been read so that the user can change the history file via his | |
2655 | * .gdbinit file (for instance). The GDBHISTFILE environment variable | |
2656 | * overrides all of this. | |
2657 | */ | |
2658 | ||
bd5635a1 | 2659 | static void |
fc61e9ee | 2660 | init_history() |
bd5635a1 | 2661 | { |
bd5635a1 | 2662 | char *tmpenv; |
bd5635a1 | 2663 | |
318bf84f FF |
2664 | tmpenv = getenv ("HISTSIZE"); |
2665 | if (tmpenv) | |
bd5635a1 | 2666 | history_size = atoi (tmpenv); |
8b3c897a | 2667 | else if (!history_size) |
bd5635a1 RP |
2668 | history_size = 256; |
2669 | ||
2670 | stifle_history (history_size); | |
2671 | ||
318bf84f FF |
2672 | tmpenv = getenv ("GDBHISTFILE"); |
2673 | if (tmpenv) | |
bd5635a1 | 2674 | history_filename = savestring (tmpenv, strlen(tmpenv)); |
8b3c897a | 2675 | else if (!history_filename) { |
bd5635a1 RP |
2676 | /* We include the current directory so that if the user changes |
2677 | directories the file written will be the same as the one | |
2678 | that was read. */ | |
7d9884b9 | 2679 | history_filename = concat (current_directory, "/.gdb_history", NULL); |
8b3c897a | 2680 | } |
bd5635a1 | 2681 | read_history (history_filename); |
8b3c897a | 2682 | } |
bd5635a1 | 2683 | |
8b3c897a | 2684 | static void |
fc61e9ee | 2685 | init_main () |
8b3c897a SG |
2686 | { |
2687 | struct cmd_list_element *c; | |
2688 | ||
2689 | #ifdef DEFAULT_PROMPT | |
2690 | prompt = savestring (DEFAULT_PROMPT, strlen(DEFAULT_PROMPT)); | |
2691 | #else | |
2692 | prompt = savestring ("(gdb) ", 6); | |
2693 | #endif | |
2694 | ||
2695 | /* Set the important stuff up for command editing. */ | |
2696 | command_editing_p = 1; | |
2697 | history_expansion_p = 0; | |
2698 | write_history_p = 0; | |
2699 | ||
bd5635a1 RP |
2700 | /* Setup important stuff for command line editing. */ |
2701 | rl_completion_entry_function = (int (*)()) symbol_completion_function; | |
2702 | rl_completer_word_break_characters = gdb_completer_word_break_characters; | |
51b57ded | 2703 | rl_completer_quote_characters = gdb_completer_quote_characters; |
bd5635a1 RP |
2704 | rl_readline_name = "gdb"; |
2705 | ||
2706 | /* Define the classes of commands. | |
2707 | They will appear in the help list in the reverse of this order. */ | |
2708 | ||
0239d9b3 FF |
2709 | add_cmd ("internals", class_maintenance, NO_FUNCTION, |
2710 | "Maintenance commands.\n\ | |
2711 | Some gdb commands are provided just for use by gdb maintainers.\n\ | |
2712 | These commands are subject to frequent change, and may not be as\n\ | |
2713 | well documented as user commands.", | |
2714 | &cmdlist); | |
bd5635a1 RP |
2715 | add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist); |
2716 | add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist); | |
2717 | add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\ | |
2718 | The commands in this class are those defined by the user.\n\ | |
2719 | Use the \"define\" command to define a command.", &cmdlist); | |
2720 | add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist); | |
2721 | add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist); | |
2722 | add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist); | |
2723 | add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist); | |
2724 | add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist); | |
2725 | add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\ | |
2726 | The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\ | |
2727 | counting from zero for the innermost (currently executing) frame.\n\n\ | |
2728 | At any time gdb identifies one frame as the \"selected\" frame.\n\ | |
2729 | Variable lookups are done with respect to the selected frame.\n\ | |
2730 | When the program being debugged stops, gdb selects the innermost frame.\n\ | |
2731 | The commands below can be used to select other frames by number or address.", | |
2732 | &cmdlist); | |
2733 | add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist); | |
2734 | ||
2735 | add_com ("pwd", class_files, pwd_command, | |
2736 | "Print working directory. This is used for your program as well."); | |
df0f0dcc | 2737 | c = add_cmd ("cd", class_files, cd_command, |
bd5635a1 RP |
2738 | "Set working directory to DIR for debugger and program being debugged.\n\ |
2739 | The change does not take effect for the program being debugged\n\ | |
df0f0dcc JK |
2740 | until the next time it is started.", &cmdlist); |
2741 | c->completer = filename_completer; | |
bd5635a1 RP |
2742 | |
2743 | add_show_from_set | |
2744 | (add_set_cmd ("prompt", class_support, var_string, (char *)&prompt, | |
2745 | "Set gdb's prompt", | |
2746 | &setlist), | |
2747 | &showlist); | |
2748 | ||
2749 | add_com ("echo", class_support, echo_command, | |
2750 | "Print a constant string. Give string as argument.\n\ | |
2751 | C escape sequences may be used in the argument.\n\ | |
2752 | No newline is added at the end of the argument;\n\ | |
2753 | use \"\\n\" if you want a newline to be printed.\n\ | |
2754 | Since leading and trailing whitespace are ignored in command arguments,\n\ | |
2755 | if you want to print some you must use \"\\\" before leading whitespace\n\ | |
2756 | to be printed or after trailing whitespace."); | |
2757 | add_com ("document", class_support, document_command, | |
2758 | "Document a user-defined command.\n\ | |
2759 | Give command name as argument. Give documentation on following lines.\n\ | |
2760 | End with a line of just \"end\"."); | |
2761 | add_com ("define", class_support, define_command, | |
2762 | "Define a new command name. Command name is argument.\n\ | |
2763 | Definition appears on following lines, one command per line.\n\ | |
2764 | End with a line of just \"end\".\n\ | |
2765 | Use the \"document\" command to give documentation for the new command.\n\ | |
2766 | Commands defined in this way do not take arguments."); | |
2767 | ||
2768 | #ifdef __STDC__ | |
df0f0dcc | 2769 | c = add_cmd ("source", class_support, source_command, |
bd5635a1 RP |
2770 | "Read commands from a file named FILE.\n\ |
2771 | Note that the file \"" GDBINIT_FILENAME "\" is read automatically in this way\n\ | |
df0f0dcc | 2772 | when gdb is started.", &cmdlist); |
bd5635a1 RP |
2773 | #else |
2774 | /* Punt file name, we can't help it easily. */ | |
df0f0dcc | 2775 | c = add_cmd ("source", class_support, source_command, |
bd5635a1 RP |
2776 | "Read commands from a file named FILE.\n\ |
2777 | Note that the file \".gdbinit\" is read automatically in this way\n\ | |
df0f0dcc | 2778 | when gdb is started.", &cmdlist); |
bd5635a1 | 2779 | #endif |
df0f0dcc | 2780 | c->completer = filename_completer; |
bd5635a1 RP |
2781 | |
2782 | add_com ("quit", class_support, quit_command, "Exit gdb."); | |
2783 | add_com ("help", class_support, help_command, "Print list of commands."); | |
2784 | add_com_alias ("q", "quit", class_support, 1); | |
2785 | add_com_alias ("h", "help", class_support, 1); | |
2786 | ||
2787 | ||
2788 | c = add_set_cmd ("verbose", class_support, var_boolean, (char *)&info_verbose, | |
2789 | "Set ", | |
2790 | &setlist), | |
2791 | add_show_from_set (c, &showlist); | |
30875e1c | 2792 | c->function.sfunc = set_verbose; |
bd5635a1 RP |
2793 | set_verbose (NULL, 0, c); |
2794 | ||
bd5635a1 RP |
2795 | add_show_from_set |
2796 | (add_set_cmd ("editing", class_support, var_boolean, (char *)&command_editing_p, | |
ee0613d1 | 2797 | "Set editing of command lines as they are typed.\n\ |
bd5635a1 | 2798 | Use \"on\" to enable to enable the editing, and \"off\" to disable it.\n\ |
ee0613d1 JG |
2799 | Without an argument, command line editing is enabled. To edit, use\n\ |
2800 | EMACS-like or VI-like commands like control-P or ESC.", &setlist), | |
bd5635a1 RP |
2801 | &showlist); |
2802 | ||
2803 | add_prefix_cmd ("history", class_support, set_history, | |
2804 | "Generic command for setting command history parameters.", | |
2805 | &sethistlist, "set history ", 0, &setlist); | |
2806 | add_prefix_cmd ("history", class_support, show_history, | |
2807 | "Generic command for showing command history parameters.", | |
2808 | &showhistlist, "show history ", 0, &showlist); | |
2809 | ||
2810 | add_show_from_set | |
2811 | (add_set_cmd ("expansion", no_class, var_boolean, (char *)&history_expansion_p, | |
2812 | "Set history expansion on command input.\n\ | |
2813 | Without an argument, history expansion is enabled.", &sethistlist), | |
2814 | &showhistlist); | |
2815 | ||
2816 | add_show_from_set | |
f266e564 | 2817 | (add_set_cmd ("save", no_class, var_boolean, (char *)&write_history_p, |
bd5635a1 RP |
2818 | "Set saving of the history record on exit.\n\ |
2819 | Use \"on\" to enable to enable the saving, and \"off\" to disable it.\n\ | |
2820 | Without an argument, saving is enabled.", &sethistlist), | |
2821 | &showhistlist); | |
2822 | ||
6fe90fc8 | 2823 | c = add_set_cmd ("size", no_class, var_integer, (char *)&history_size, |
bd5635a1 RP |
2824 | "Set the size of the command history, \n\ |
2825 | ie. the number of previous commands to keep a record of.", &sethistlist); | |
2826 | add_show_from_set (c, &showhistlist); | |
30875e1c | 2827 | c->function.sfunc = set_history_size_command; |
bd5635a1 RP |
2828 | |
2829 | add_show_from_set | |
2830 | (add_set_cmd ("filename", no_class, var_filename, (char *)&history_filename, | |
2831 | "Set the filename in which to record the command history\n\ | |
2832 | (the list of previous commands of which a record is kept).", &sethistlist), | |
2833 | &showhistlist); | |
2834 | ||
2835 | add_show_from_set | |
f266e564 | 2836 | (add_set_cmd ("confirm", class_support, var_boolean, |
bd5635a1 | 2837 | (char *)&caution, |
f266e564 JK |
2838 | "Set whether to confirm potentially dangerous operations.", |
2839 | &setlist), | |
bd5635a1 RP |
2840 | &showlist); |
2841 | ||
2842 | add_prefix_cmd ("info", class_info, info_command, | |
ee0613d1 | 2843 | "Generic command for showing things about the program being debugged.", |
bd5635a1 RP |
2844 | &infolist, "info ", 0, &cmdlist); |
2845 | add_com_alias ("i", "info", class_info, 1); | |
2846 | ||
2847 | add_prefix_cmd ("show", class_info, show_command, | |
ee0613d1 | 2848 | "Generic command for showing things about the debugger.", |
bd5635a1 RP |
2849 | &showlist, "show ", 0, &cmdlist); |
2850 | /* Another way to get at the same thing. */ | |
2851 | add_info ("set", show_command, "Show all GDB settings."); | |
2852 | ||
ee0613d1 JG |
2853 | add_cmd ("commands", no_class, show_commands, |
2854 | "Show the the history of commands you typed.\n\ | |
2855 | You can supply a command number to start with, or a `+' to start after\n\ | |
2856 | the previous command number shown.", | |
f266e564 | 2857 | &showlist); |
bd5635a1 | 2858 | |
f266e564 | 2859 | add_cmd ("version", no_class, show_version, |
ee0613d1 | 2860 | "Show what version of GDB this is.", &showlist); |
d0d8484a | 2861 | |
199b2450 TL |
2862 | /* If target is open when baud changes, it doesn't take effect until the |
2863 | next open (I think, not sure). */ | |
2864 | add_show_from_set (add_set_cmd ("remotebaud", no_class, | |
2865 | var_zinteger, (char *)&baud_rate, | |
2866 | "Set baud rate for remote serial I/O.\n\ | |
2867 | This value is used to set the speed of the serial port when debugging\n\ | |
2868 | using remote targets.", &setlist), | |
2869 | &showlist); | |
2870 | ||
d0d8484a | 2871 | add_show_from_set ( |
d6bbac39 | 2872 | add_set_cmd ("remotedebug", no_class, var_zinteger, (char *)&remote_debug, |
d0d8484a SG |
2873 | "Set debugging of remote protocol.\n\ |
2874 | When enabled, each packet sent or received with the remote target\n\ | |
2875 | is displayed.", &setlist), | |
2876 | &showlist); | |
bd5635a1 | 2877 | } |