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. */ |
1c95d7ab | 33 | #include "annotate.h" |
bd5635a1 | 34 | |
e522fb52 JG |
35 | #include "getopt.h" |
36 | ||
37 | /* readline include files */ | |
38 | #include "readline.h" | |
39 | #include "history.h" | |
bd5635a1 RP |
40 | |
41 | /* readline defines this. */ | |
42 | #undef savestring | |
43 | ||
bd5635a1 | 44 | #include <sys/types.h> |
09973223 JK |
45 | #ifdef USG |
46 | /* What is this for? X_OK? */ | |
bd5635a1 RP |
47 | #include <unistd.h> |
48 | #endif | |
49 | ||
50 | #include <string.h> | |
ee0613d1 | 51 | #ifndef NO_SYS_FILE |
bd5635a1 | 52 | #include <sys/file.h> |
ee0613d1 | 53 | #endif |
bd5635a1 RP |
54 | #include <setjmp.h> |
55 | #include <sys/param.h> | |
56 | #include <sys/stat.h> | |
e522fb52 | 57 | #include <ctype.h> |
bd5635a1 RP |
58 | |
59 | #ifdef SET_STACK_LIMIT_HUGE | |
60 | #include <sys/time.h> | |
61 | #include <sys/resource.h> | |
bd5635a1 RP |
62 | |
63 | int original_stack_limit; | |
64 | #endif | |
65 | ||
30875e1c SG |
66 | /* Prototypes for local functions */ |
67 | ||
68 | static char * | |
69 | symbol_completion_function PARAMS ((char *, int)); | |
70 | ||
71 | static void | |
72 | command_loop PARAMS ((void)); | |
73 | ||
74 | static void | |
75 | command_loop_marker PARAMS ((int)); | |
76 | ||
77 | static void | |
199b2450 | 78 | print_gdb_version PARAMS ((GDB_FILE *)); |
30875e1c SG |
79 | |
80 | static void | |
81 | quit_command PARAMS ((char *, int)); | |
82 | ||
83 | static void | |
fc61e9ee | 84 | init_main PARAMS ((void)); |
30875e1c SG |
85 | |
86 | static void | |
fc61e9ee | 87 | init_history PARAMS ((void)); |
30875e1c SG |
88 | |
89 | static void | |
fc61e9ee | 90 | init_cmd_lists PARAMS ((void)); |
30875e1c SG |
91 | |
92 | static void | |
93 | float_handler PARAMS ((int)); | |
94 | ||
95 | static void | |
96 | source_command PARAMS ((char *, int)); | |
97 | ||
c307bb11 | 98 | static void cd_command PARAMS ((char *, int)); |
30875e1c SG |
99 | |
100 | static void | |
101 | print_gnu_advertisement PARAMS ((void)); | |
102 | ||
103 | static void | |
104 | init_signals PARAMS ((void)); | |
105 | ||
106 | static void | |
107 | read_command_file PARAMS ((FILE *)); | |
108 | ||
109 | static void | |
110 | set_verbose PARAMS ((char *, int, struct cmd_list_element *)); | |
111 | ||
112 | static void | |
113 | show_history PARAMS ((char *, int)); | |
114 | ||
115 | static void | |
116 | set_history PARAMS ((char *, int)); | |
117 | ||
118 | static void | |
119 | set_history_size_command PARAMS ((char *, int, struct cmd_list_element *)); | |
120 | ||
121 | static void | |
122 | show_commands PARAMS ((char *, int)); | |
123 | ||
30875e1c SG |
124 | static void |
125 | echo_command PARAMS ((char *, int)); | |
126 | ||
127 | static void | |
128 | pwd_command PARAMS ((char *, int)); | |
129 | ||
130 | static void | |
131 | show_version PARAMS ((char *, int)); | |
132 | ||
133 | static void | |
134 | document_command PARAMS ((char *, int)); | |
135 | ||
136 | static void | |
137 | define_command PARAMS ((char *, int)); | |
138 | ||
139 | static void | |
140 | validate_comname PARAMS ((char *)); | |
141 | ||
142 | static void | |
143 | help_command PARAMS ((char *, int)); | |
144 | ||
145 | static void | |
146 | show_command PARAMS ((char *, int)); | |
147 | ||
148 | static void | |
149 | info_command PARAMS ((char *, int)); | |
150 | ||
09973223 JK |
151 | static void |
152 | complete_command PARAMS ((char *, int)); | |
153 | ||
30875e1c SG |
154 | static void |
155 | do_nothing PARAMS ((int)); | |
156 | ||
597dc86b SG |
157 | static int |
158 | quit_cover PARAMS ((char *)); | |
159 | ||
30875e1c SG |
160 | static void |
161 | disconnect PARAMS ((int)); | |
162 | ||
163 | static void | |
164 | source_cleanup PARAMS ((FILE *)); | |
bd5635a1 RP |
165 | |
166 | /* If this definition isn't overridden by the header files, assume | |
167 | that isatty and fileno exist on this system. */ | |
168 | #ifndef ISATTY | |
169 | #define ISATTY(FP) (isatty (fileno (FP))) | |
170 | #endif | |
171 | ||
172 | /* Initialization file name for gdb. This is overridden in some configs. */ | |
173 | ||
174 | #ifndef GDBINIT_FILENAME | |
175 | #define GDBINIT_FILENAME ".gdbinit" | |
176 | #endif | |
6fe90fc8 JK |
177 | static char gdbinit[] = GDBINIT_FILENAME; |
178 | static int inhibit_gdbinit = 0; | |
bd5635a1 | 179 | |
f266e564 JK |
180 | #define ALL_CLEANUPS ((struct cleanup *)0) |
181 | ||
bd5635a1 RP |
182 | /* Version number of GDB, as a string. */ |
183 | ||
184 | extern char *version; | |
185 | ||
57cb418a RP |
186 | /* Canonical host name as a string. */ |
187 | ||
a28d16d3 | 188 | extern char *host_name; |
57cb418a RP |
189 | |
190 | /* Canonical target name as a string. */ | |
191 | ||
a28d16d3 | 192 | extern char *target_name; |
57cb418a | 193 | |
bd099407 JG |
194 | extern char lang_frame_mismatch_warn[]; /* language.c */ |
195 | ||
bd5635a1 RP |
196 | /* Flag for whether we want all the "from_tty" gubbish printed. */ |
197 | ||
198 | int caution = 1; /* Default is yes, sigh. */ | |
199 | ||
200 | /* | |
201 | * Define all cmd_list_element's | |
202 | */ | |
203 | ||
204 | /* Chain containing all defined commands. */ | |
205 | ||
206 | struct cmd_list_element *cmdlist; | |
207 | ||
208 | /* Chain containing all defined info subcommands. */ | |
209 | ||
210 | struct cmd_list_element *infolist; | |
211 | ||
212 | /* Chain containing all defined enable subcommands. */ | |
213 | ||
214 | struct cmd_list_element *enablelist; | |
215 | ||
216 | /* Chain containing all defined disable subcommands. */ | |
217 | ||
218 | struct cmd_list_element *disablelist; | |
219 | ||
220 | /* Chain containing all defined delete subcommands. */ | |
221 | ||
222 | struct cmd_list_element *deletelist; | |
223 | ||
224 | /* Chain containing all defined "enable breakpoint" subcommands. */ | |
225 | ||
226 | struct cmd_list_element *enablebreaklist; | |
227 | ||
228 | /* Chain containing all defined set subcommands */ | |
229 | ||
230 | struct cmd_list_element *setlist; | |
231 | ||
0239d9b3 FF |
232 | /* Chain containing all defined unset subcommands */ |
233 | ||
234 | struct cmd_list_element *unsetlist; | |
235 | ||
bd5635a1 | 236 | /* Chain containing all defined show subcommands. */ |
0239d9b3 | 237 | |
bd5635a1 RP |
238 | struct cmd_list_element *showlist; |
239 | ||
240 | /* Chain containing all defined \"set history\". */ | |
241 | ||
242 | struct cmd_list_element *sethistlist; | |
243 | ||
244 | /* Chain containing all defined \"show history\". */ | |
0239d9b3 | 245 | |
bd5635a1 RP |
246 | struct cmd_list_element *showhistlist; |
247 | ||
248 | /* Chain containing all defined \"unset history\". */ | |
249 | ||
250 | struct cmd_list_element *unsethistlist; | |
251 | ||
0239d9b3 FF |
252 | /* Chain containing all defined maintenance subcommands. */ |
253 | ||
254 | #if MAINTENANCE_CMDS | |
255 | struct cmd_list_element *maintenancelist; | |
256 | #endif | |
257 | ||
258 | /* Chain containing all defined "maintenance info" subcommands. */ | |
259 | ||
260 | #if MAINTENANCE_CMDS | |
261 | struct cmd_list_element *maintenanceinfolist; | |
262 | #endif | |
263 | ||
a8e033f2 SG |
264 | /* Chain containing all defined "maintenance print" subcommands. */ |
265 | ||
266 | #if MAINTENANCE_CMDS | |
267 | struct cmd_list_element *maintenanceprintlist; | |
268 | #endif | |
269 | ||
0239d9b3 FF |
270 | struct cmd_list_element *setprintlist; |
271 | ||
272 | struct cmd_list_element *showprintlist; | |
273 | ||
274 | struct cmd_list_element *setchecklist; | |
275 | ||
276 | struct cmd_list_element *showchecklist; | |
277 | ||
d0d8484a SG |
278 | /* stdio stream that command input is being read from. Set to stdin normally. |
279 | Set by source_command to the file we are sourcing. Set to NULL if we are | |
280 | executing a user-defined command. */ | |
bd5635a1 RP |
281 | |
282 | FILE *instream; | |
283 | ||
284 | /* Current working directory. */ | |
285 | ||
286 | char *current_directory; | |
287 | ||
288 | /* The directory name is actually stored here (usually). */ | |
f7402c04 | 289 | static char dirbuf[1024]; |
bd5635a1 RP |
290 | |
291 | /* Function to call before reading a command, if nonzero. | |
292 | The function receives two args: an input stream, | |
293 | and a prompt string. */ | |
bd099407 | 294 | |
30875e1c | 295 | void (*window_hook) PARAMS ((FILE *, char *)); |
bd5635a1 | 296 | |
318bf84f FF |
297 | extern int mapped_symbol_files; |
298 | extern int readnow_symbol_files; | |
299 | ||
bd5635a1 RP |
300 | int epoch_interface; |
301 | int xgdb_verbose; | |
302 | ||
bd5635a1 RP |
303 | /* gdb prints this when reading a command interactively */ |
304 | static char *prompt; | |
305 | ||
306 | /* Buffer used for reading command lines, and the size | |
307 | allocated for it so far. */ | |
308 | ||
309 | char *line; | |
310 | int linesize = 100; | |
311 | ||
6c803036 JK |
312 | /* Nonzero if the current command is modified by "server ". This |
313 | affects things like recording into the command history, comamnds | |
314 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, | |
315 | whatever) can issue its own commands and also send along commands | |
316 | from the user, and have the user not notice that the user interface | |
317 | is issuing commands too. */ | |
318 | int server_command; | |
319 | ||
bd5635a1 | 320 | /* Baud rate specified for talking to serial target systems. Default |
d0d8484a | 321 | is left as -1, so targets can choose their own defaults. */ |
9c41f6a6 JK |
322 | /* FIXME: This means that "show remotebaud" and gr_files_info can print -1 |
323 | or (unsigned int)-1. This is a Bad User Interface. */ | |
bd5635a1 | 324 | |
d0d8484a SG |
325 | int baud_rate = -1; |
326 | ||
327 | /* Non-zero tells remote* modules to output debugging info. */ | |
328 | ||
329 | int remote_debug = 0; | |
bd5635a1 RP |
330 | |
331 | /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */ | |
332 | ||
333 | #ifndef STOP_SIGNAL | |
334 | #ifdef SIGTSTP | |
335 | #define STOP_SIGNAL SIGTSTP | |
30875e1c | 336 | static void stop_sig PARAMS ((int)); |
bd5635a1 RP |
337 | #endif |
338 | #endif | |
d566d62a JK |
339 | |
340 | /* Some System V have job control but not sigsetmask(). */ | |
341 | #if !defined (HAVE_SIGSETMASK) | |
36464897 JK |
342 | #if !defined (USG) |
343 | #define HAVE_SIGSETMASK 1 | |
344 | #else | |
345 | #define HAVE_SIGSETMASK 0 | |
346 | #endif | |
d566d62a JK |
347 | #endif |
348 | ||
8b3c897a | 349 | #if 0 == (HAVE_SIGSETMASK) |
d566d62a JK |
350 | #define sigsetmask(n) |
351 | #endif | |
bd5635a1 | 352 | \f |
9748446f JK |
353 | /* Where to go for return_to_top_level (RETURN_ERROR). */ |
354 | static jmp_buf error_return; | |
355 | /* Where to go for return_to_top_level (RETURN_QUIT). */ | |
356 | static jmp_buf quit_return; | |
bd5635a1 | 357 | |
9748446f JK |
358 | /* Temporary variable for SET_TOP_LEVEL. */ |
359 | static int top_level_val; | |
360 | ||
361 | /* Do a setjmp on error_return and quit_return. catch_errors is | |
362 | generally a cleaner way to do this, but main() would look pretty | |
363 | ugly if it had to use catch_errors each time. */ | |
364 | ||
365 | #define SET_TOP_LEVEL() \ | |
366 | (((top_level_val = setjmp (error_return)) \ | |
367 | ? (PTR) 0 : (PTR) memcpy (quit_return, error_return, sizeof (jmp_buf))) \ | |
368 | , top_level_val) | |
369 | ||
370 | /* Return for reason REASON. This generally gets back to the command | |
371 | loop, but can be caught via catch_errors. */ | |
bd5635a1 | 372 | |
30875e1c | 373 | NORETURN void |
9748446f JK |
374 | return_to_top_level (reason) |
375 | enum return_reason reason; | |
bd5635a1 RP |
376 | { |
377 | quit_flag = 0; | |
378 | immediate_quit = 0; | |
c307bb11 JK |
379 | |
380 | /* Perhaps it would be cleaner to do this via the cleanup chain (not sure | |
381 | I can think of a reason why that is vital, though). */ | |
bd5635a1 | 382 | bpstat_clear_actions(stop_bpstat); /* Clear queued breakpoint commands */ |
c307bb11 | 383 | |
bd5635a1 | 384 | disable_current_display (); |
f266e564 | 385 | do_cleanups (ALL_CLEANUPS); |
a6b26c44 SS |
386 | |
387 | if (annotation_level > 1) | |
388 | switch (reason) | |
389 | { | |
390 | case RETURN_QUIT: | |
1c95d7ab | 391 | annotate_quit (); |
a6b26c44 SS |
392 | break; |
393 | case RETURN_ERROR: | |
1c95d7ab | 394 | annotate_error (); |
a6b26c44 SS |
395 | break; |
396 | } | |
397 | ||
9748446f JK |
398 | (NORETURN void) longjmp |
399 | (reason == RETURN_ERROR ? error_return : quit_return, 1); | |
bd5635a1 RP |
400 | } |
401 | ||
9748446f JK |
402 | /* Call FUNC with arg ARGS, catching any errors. If there is no |
403 | error, return the value returned by FUNC. If there is an error, | |
404 | print ERRSTRING, print the specific error message, then return | |
405 | zero. | |
406 | ||
d0d8484a SG |
407 | Must not be called with immediate_quit in effect (bad things might |
408 | happen, say we got a signal in the middle of a memcpy to quit_return). | |
409 | This is an OK restriction; with very few exceptions immediate_quit can | |
410 | be replaced by judicious use of QUIT. | |
411 | ||
9748446f JK |
412 | MASK specifies what to catch; it is normally set to |
413 | RETURN_MASK_ALL, if for no other reason than that the code which | |
414 | calls catch_errors might not be set up to deal with a quit which | |
415 | isn't caught. But if the code can deal with it, it generally | |
416 | should be RETURN_MASK_ERROR, unless for some reason it is more | |
417 | useful to abort only the portion of the operation inside the | |
418 | catch_errors. Note that quit should return to the command line | |
419 | fairly quickly, even if some further processing is being done. */ | |
bd5635a1 RP |
420 | |
421 | int | |
9748446f | 422 | catch_errors (func, args, errstring, mask) |
30875e1c | 423 | int (*func) PARAMS ((char *)); |
9748446f | 424 | PTR args; |
bd5635a1 | 425 | char *errstring; |
9748446f | 426 | return_mask mask; |
bd5635a1 | 427 | { |
9748446f JK |
428 | jmp_buf saved_error; |
429 | jmp_buf saved_quit; | |
430 | jmp_buf tmp_jmp; | |
bd5635a1 RP |
431 | int val; |
432 | struct cleanup *saved_cleanup_chain; | |
81066208 | 433 | char *saved_error_pre_print; |
bd5635a1 RP |
434 | |
435 | saved_cleanup_chain = save_cleanups (); | |
81066208 | 436 | saved_error_pre_print = error_pre_print; |
bd5635a1 | 437 | |
9748446f JK |
438 | if (mask & RETURN_MASK_ERROR) |
439 | memcpy ((char *)saved_error, (char *)error_return, sizeof (jmp_buf)); | |
440 | if (mask & RETURN_MASK_QUIT) | |
441 | memcpy (saved_quit, quit_return, sizeof (jmp_buf)); | |
81066208 | 442 | error_pre_print = errstring; |
bd5635a1 | 443 | |
9748446f JK |
444 | if (setjmp (tmp_jmp) == 0) |
445 | { | |
446 | if (mask & RETURN_MASK_ERROR) | |
447 | memcpy (error_return, tmp_jmp, sizeof (jmp_buf)); | |
448 | if (mask & RETURN_MASK_QUIT) | |
449 | memcpy (quit_return, tmp_jmp, sizeof (jmp_buf)); | |
450 | val = (*func) (args); | |
451 | } | |
bd5635a1 | 452 | else |
81066208 | 453 | val = 0; |
bd5635a1 RP |
454 | |
455 | restore_cleanups (saved_cleanup_chain); | |
456 | ||
81066208 | 457 | error_pre_print = saved_error_pre_print; |
9748446f JK |
458 | if (mask & RETURN_MASK_ERROR) |
459 | memcpy (error_return, saved_error, sizeof (jmp_buf)); | |
460 | if (mask & RETURN_MASK_QUIT) | |
461 | memcpy (quit_return, saved_quit, sizeof (jmp_buf)); | |
bd5635a1 RP |
462 | return val; |
463 | } | |
464 | ||
465 | /* Handler for SIGHUP. */ | |
466 | ||
467 | static void | |
30875e1c SG |
468 | disconnect (signo) |
469 | int signo; | |
bd5635a1 | 470 | { |
6fe90fc8 | 471 | catch_errors (quit_cover, NULL, |
9748446f | 472 | "Could not kill the program being debugged", RETURN_MASK_ALL); |
597dc86b | 473 | signal (SIGHUP, SIG_DFL); |
bd5635a1 RP |
474 | kill (getpid (), SIGHUP); |
475 | } | |
597dc86b SG |
476 | |
477 | /* Just a little helper function for disconnect(). */ | |
478 | ||
479 | static int | |
480 | quit_cover (s) | |
481 | char *s; | |
482 | { | |
483 | caution = 0; /* Throw caution to the wind -- we're exiting. | |
484 | This prevents asking the user dumb questions. */ | |
485 | quit_command((char *)0, 0); | |
486 | return 0; | |
487 | } | |
bd5635a1 | 488 | \f |
d6bbac39 JK |
489 | /* Line number we are currently in in a file which is being sourced. */ |
490 | static int source_line_number; | |
491 | ||
492 | /* Name of the file we are sourcing. */ | |
493 | static char *source_file_name; | |
494 | ||
495 | /* Buffer containing the error_pre_print used by the source stuff. | |
496 | Malloc'd. */ | |
497 | static char *source_error; | |
498 | static int source_error_allocated; | |
499 | ||
500 | /* Something to glom on to the start of error_pre_print if source_file_name | |
501 | is set. */ | |
502 | static char *source_pre_error; | |
503 | ||
bd5635a1 RP |
504 | /* Clean up on error during a "source" command (or execution of a |
505 | user-defined command). */ | |
506 | ||
507 | static void | |
508 | source_cleanup (stream) | |
509 | FILE *stream; | |
510 | { | |
511 | /* Restore the previous input stream. */ | |
512 | instream = stream; | |
513 | } | |
514 | ||
515 | /* Read commands from STREAM. */ | |
516 | static void | |
517 | read_command_file (stream) | |
518 | FILE *stream; | |
519 | { | |
520 | struct cleanup *cleanups; | |
521 | ||
522 | cleanups = make_cleanup (source_cleanup, instream); | |
523 | instream = stream; | |
524 | command_loop (); | |
525 | do_cleanups (cleanups); | |
526 | } | |
527 | \f | |
528 | int | |
529 | main (argc, argv) | |
530 | int argc; | |
531 | char **argv; | |
532 | { | |
533 | int count; | |
bd5635a1 RP |
534 | static int quiet = 0; |
535 | static int batch = 0; | |
536 | ||
537 | /* Pointers to various arguments from command line. */ | |
538 | char *symarg = NULL; | |
539 | char *execarg = NULL; | |
540 | char *corearg = NULL; | |
541 | char *cdarg = NULL; | |
542 | char *ttyarg = NULL; | |
543 | ||
c307bb11 JK |
544 | /* These are static so that we can take their address in an initializer. */ |
545 | static int print_help; | |
546 | static int print_version; | |
547 | ||
548 | /* Pointers to all arguments of --command option. */ | |
bd5635a1 RP |
549 | char **cmdarg; |
550 | /* Allocated size of cmdarg. */ | |
551 | int cmdsize; | |
552 | /* Number of elements of cmdarg used. */ | |
553 | int ncmd; | |
554 | ||
c307bb11 | 555 | /* Indices of all arguments of --directory option. */ |
bd5635a1 RP |
556 | char **dirarg; |
557 | /* Allocated size. */ | |
558 | int dirsize; | |
559 | /* Number of elements used. */ | |
560 | int ndir; | |
561 | ||
3a16d640 JG |
562 | struct stat homebuf, cwdbuf; |
563 | char *homedir, *homeinit; | |
564 | ||
bd5635a1 RP |
565 | register int i; |
566 | ||
a6b26c44 SS |
567 | /* start-sanitize-mpw */ |
568 | #ifdef MPW | |
569 | /* Drop into MacsBug, but only if the executable is specially named. */ | |
570 | if (strcmp(argv[0], "DEBUGGDB") == 0) | |
571 | DebugStr("\pat start of GDB main"); | |
572 | ||
573 | if (StandAlone) | |
574 | mac_app = mac_init (); | |
575 | #endif /* MPW */ | |
576 | /* end-sanitize-mpw */ | |
bd5635a1 | 577 | /* This needs to happen before the first use of malloc. */ |
318bf84f | 578 | init_malloc ((PTR) NULL); |
bd5635a1 RP |
579 | |
580 | #if defined (ALIGN_STACK_ON_STARTUP) | |
581 | i = (int) &count & 0x3; | |
582 | if (i != 0) | |
583 | alloca (4 - i); | |
584 | #endif | |
585 | ||
bd099407 | 586 | /* If error() is called from initialization code, just exit */ |
9748446f | 587 | if (SET_TOP_LEVEL ()) { |
bd099407 JG |
588 | exit(1); |
589 | } | |
590 | ||
bd5635a1 RP |
591 | cmdsize = 1; |
592 | cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg)); | |
593 | ncmd = 0; | |
594 | dirsize = 1; | |
595 | dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg)); | |
596 | ndir = 0; | |
597 | ||
598 | quit_flag = 0; | |
599 | line = (char *) xmalloc (linesize); | |
600 | line[0] = '\0'; /* Terminate saved (now empty) cmd line */ | |
601 | instream = stdin; | |
602 | ||
f7402c04 | 603 | getcwd (dirbuf, sizeof (dirbuf)); |
bd5635a1 RP |
604 | current_directory = dirbuf; |
605 | ||
606 | #ifdef SET_STACK_LIMIT_HUGE | |
607 | { | |
608 | struct rlimit rlim; | |
609 | ||
610 | /* Set the stack limit huge so that alloca (particularly stringtab | |
611 | * in dbxread.c) does not fail. */ | |
612 | getrlimit (RLIMIT_STACK, &rlim); | |
613 | original_stack_limit = rlim.rlim_cur; | |
614 | rlim.rlim_cur = rlim.rlim_max; | |
615 | setrlimit (RLIMIT_STACK, &rlim); | |
616 | } | |
617 | #endif /* SET_STACK_LIMIT_HUGE */ | |
618 | ||
619 | /* Parse arguments and options. */ | |
620 | { | |
621 | int c; | |
bd5635a1 RP |
622 | /* When var field is 0, use flag field to record the equivalent |
623 | short option (or arbitrary numbers starting at 10 for those | |
624 | with no equivalent). */ | |
625 | static struct option long_options[] = | |
626 | { | |
318bf84f FF |
627 | {"readnow", no_argument, &readnow_symbol_files, 1}, |
628 | {"r", no_argument, &readnow_symbol_files, 1}, | |
629 | {"mapped", no_argument, &mapped_symbol_files, 1}, | |
630 | {"m", no_argument, &mapped_symbol_files, 1}, | |
ee0613d1 JG |
631 | {"quiet", no_argument, &quiet, 1}, |
632 | {"q", no_argument, &quiet, 1}, | |
fb29d681 | 633 | {"silent", no_argument, &quiet, 1}, |
ee0613d1 JG |
634 | {"nx", no_argument, &inhibit_gdbinit, 1}, |
635 | {"n", no_argument, &inhibit_gdbinit, 1}, | |
636 | {"batch", no_argument, &batch, 1}, | |
637 | {"epoch", no_argument, &epoch_interface, 1}, | |
6c803036 JK |
638 | |
639 | /* This is a synonym for "--annotate=1". --annotate is now preferred, | |
640 | but keep this here for a long time because people will be running | |
641 | emacses which use --fullname. */ | |
642 | {"fullname", no_argument, 0, 'f'}, | |
643 | {"f", no_argument, 0, 'f'}, | |
644 | ||
645 | {"annotate", required_argument, 0, 12}, | |
ee0613d1 JG |
646 | {"help", no_argument, &print_help, 1}, |
647 | {"se", required_argument, 0, 10}, | |
648 | {"symbols", required_argument, 0, 's'}, | |
649 | {"s", required_argument, 0, 's'}, | |
650 | {"exec", required_argument, 0, 'e'}, | |
651 | {"e", required_argument, 0, 'e'}, | |
652 | {"core", required_argument, 0, 'c'}, | |
653 | {"c", required_argument, 0, 'c'}, | |
654 | {"command", required_argument, 0, 'x'}, | |
c307bb11 | 655 | {"version", no_argument, &print_version, 1}, |
ee0613d1 JG |
656 | {"x", required_argument, 0, 'x'}, |
657 | {"directory", required_argument, 0, 'd'}, | |
658 | {"cd", required_argument, 0, 11}, | |
659 | {"tty", required_argument, 0, 't'}, | |
660 | {"baud", required_argument, 0, 'b'}, | |
661 | {"b", required_argument, 0, 'b'}, | |
bd5635a1 RP |
662 | /* Allow machine descriptions to add more options... */ |
663 | #ifdef ADDITIONAL_OPTIONS | |
664 | ADDITIONAL_OPTIONS | |
665 | #endif | |
ee0613d1 | 666 | {0, no_argument, 0, 0}, |
bd5635a1 RP |
667 | }; |
668 | ||
669 | while (1) | |
670 | { | |
ee0613d1 JG |
671 | int option_index; |
672 | ||
bd5635a1 RP |
673 | c = getopt_long_only (argc, argv, "", |
674 | long_options, &option_index); | |
675 | if (c == EOF) | |
676 | break; | |
677 | ||
678 | /* Long option that takes an argument. */ | |
679 | if (c == 0 && long_options[option_index].flag == 0) | |
680 | c = long_options[option_index].val; | |
681 | ||
682 | switch (c) | |
683 | { | |
684 | case 0: | |
685 | /* Long option that just sets a flag. */ | |
686 | break; | |
687 | case 10: | |
688 | symarg = optarg; | |
689 | execarg = optarg; | |
690 | break; | |
691 | case 11: | |
692 | cdarg = optarg; | |
693 | break; | |
6c803036 JK |
694 | case 12: |
695 | /* FIXME: what if the syntax is wrong (e.g. not digits)? */ | |
696 | annotation_level = atoi (optarg); | |
697 | break; | |
698 | case 'f': | |
699 | annotation_level = 1; | |
700 | break; | |
bd5635a1 RP |
701 | case 's': |
702 | symarg = optarg; | |
703 | break; | |
704 | case 'e': | |
705 | execarg = optarg; | |
706 | break; | |
707 | case 'c': | |
708 | corearg = optarg; | |
709 | break; | |
710 | case 'x': | |
711 | cmdarg[ncmd++] = optarg; | |
712 | if (ncmd >= cmdsize) | |
713 | { | |
714 | cmdsize *= 2; | |
715 | cmdarg = (char **) xrealloc ((char *)cmdarg, | |
716 | cmdsize * sizeof (*cmdarg)); | |
717 | } | |
718 | break; | |
719 | case 'd': | |
720 | dirarg[ndir++] = optarg; | |
721 | if (ndir >= dirsize) | |
722 | { | |
723 | dirsize *= 2; | |
724 | dirarg = (char **) xrealloc ((char *)dirarg, | |
725 | dirsize * sizeof (*dirarg)); | |
726 | } | |
727 | break; | |
728 | case 't': | |
729 | ttyarg = optarg; | |
730 | break; | |
731 | case 'q': | |
732 | quiet = 1; | |
733 | break; | |
734 | case 'b': | |
d0d8484a SG |
735 | { |
736 | int i; | |
737 | char *p; | |
738 | ||
739 | i = strtol (optarg, &p, 0); | |
740 | if (i == 0 && p == optarg) | |
8e4c7b3e JK |
741 | |
742 | /* Don't use *_filtered or warning() (which relies on | |
743 | current_target) until after initialize_all_files(). */ | |
744 | ||
745 | fprintf_unfiltered | |
746 | (gdb_stderr, | |
747 | "warning: could not set baud rate to `%s'.\n", optarg); | |
d0d8484a SG |
748 | else |
749 | baud_rate = i; | |
750 | } | |
bd5635a1 | 751 | break; |
d0d8484a | 752 | |
bd5635a1 RP |
753 | #ifdef ADDITIONAL_OPTION_CASES |
754 | ADDITIONAL_OPTION_CASES | |
755 | #endif | |
756 | case '?': | |
199b2450 | 757 | fprintf_unfiltered (gdb_stderr, |
fb29d681 | 758 | "Use `%s --help' for a complete list of options.\n", |
bd5635a1 RP |
759 | argv[0]); |
760 | exit (1); | |
761 | } | |
bd5635a1 | 762 | } |
fb29d681 | 763 | |
bd5635a1 RP |
764 | /* OK, that's all the options. The other arguments are filenames. */ |
765 | count = 0; | |
766 | for (; optind < argc; optind++) | |
767 | switch (++count) | |
768 | { | |
769 | case 1: | |
770 | symarg = argv[optind]; | |
771 | execarg = argv[optind]; | |
772 | break; | |
773 | case 2: | |
774 | corearg = argv[optind]; | |
775 | break; | |
776 | case 3: | |
199b2450 | 777 | fprintf_unfiltered (gdb_stderr, |
bd5635a1 RP |
778 | "Excess command line arguments ignored. (%s%s)\n", |
779 | argv[optind], (optind == argc - 1) ? "" : " ..."); | |
780 | break; | |
781 | } | |
782 | if (batch) | |
783 | quiet = 1; | |
784 | } | |
785 | ||
786 | /* Run the init function of each source file */ | |
787 | ||
fc61e9ee | 788 | init_cmd_lists (); /* This needs to be done first */ |
bd5635a1 | 789 | initialize_all_files (); |
fc61e9ee | 790 | init_main (); /* But that omits this file! Do it now */ |
bd5635a1 RP |
791 | init_signals (); |
792 | ||
c307bb11 JK |
793 | /* Do these (and anything which might call wrap_here or *_filtered) |
794 | after initialize_all_files. */ | |
795 | if (print_version) | |
796 | { | |
199b2450 | 797 | print_gdb_version (gdb_stdout); |
c307bb11 JK |
798 | wrap_here (""); |
799 | printf_filtered ("\n"); | |
800 | exit (0); | |
801 | } | |
802 | ||
803 | if (print_help) | |
804 | { | |
805 | /* --version is intentionally not documented here, because we | |
806 | are printing the version here, and the help is long enough | |
807 | already. */ | |
808 | ||
199b2450 | 809 | print_gdb_version (gdb_stdout); |
c307bb11 JK |
810 | /* Make sure the output gets printed. */ |
811 | wrap_here (""); | |
812 | printf_filtered ("\n"); | |
813 | ||
814 | /* But don't use *_filtered here. We don't want to prompt for continue | |
815 | no matter how small the screen or how much we're going to print. */ | |
a6b26c44 SS |
816 | /* start-sanitize-mpw */ |
817 | /* For reasons too ugly to describe... */ | |
818 | #ifdef MPW_C | |
819 | fputs_unfiltered ("This is the GNU debugger.\n", gdb_stdout); | |
820 | #else | |
821 | /* end-sanitize-mpw */ | |
199b2450 | 822 | fputs_unfiltered ("\ |
c307bb11 JK |
823 | This is the GNU debugger. Usage:\n\ |
824 | gdb [options] [executable-file [core-file or process-id]]\n\ | |
825 | Options:\n\ | |
826 | --help Print this message.\n\ | |
827 | --quiet Do not print version number on startup.\n\ | |
828 | --fullname Output information used by emacs-GDB interface.\n\ | |
829 | --epoch Output information used by epoch emacs-GDB interface.\n\ | |
830 | --batch Exit after processing options.\n\ | |
831 | --nx Do not read .gdbinit file.\n\ | |
832 | --tty=TTY Use TTY for input/output by the program being debugged.\n\ | |
833 | --cd=DIR Change current directory to DIR.\n\ | |
834 | --directory=DIR Search for source files in DIR.\n\ | |
835 | --command=FILE Execute GDB commands from FILE.\n\ | |
836 | --symbols=SYMFILE Read symbols from SYMFILE.\n\ | |
837 | --exec=EXECFILE Use EXECFILE as the executable.\n\ | |
838 | --se=FILE Use FILE as symbol file and executable file.\n\ | |
839 | --core=COREFILE Analyze the core dump COREFILE.\n\ | |
840 | -b BAUDRATE Set serial port baud rate used for remote debugging.\n\ | |
841 | --mapped Use mapped symbol files if supported on this system.\n\ | |
842 | --readnow Fully read symbol files on first access.\n\ | |
199b2450 | 843 | ", gdb_stdout); |
a6b26c44 SS |
844 | /* start-sanitize-mpw */ |
845 | #endif /* MPW_C */ | |
846 | /* end-sanitize-mpw */ | |
c307bb11 | 847 | #ifdef ADDITIONAL_OPTION_HELP |
199b2450 | 848 | fputs_unfiltered (ADDITIONAL_OPTION_HELP, gdb_stdout); |
c307bb11 | 849 | #endif |
199b2450 | 850 | fputs_unfiltered ("\n\ |
c307bb11 | 851 | For more information, type \"help\" from within GDB, or consult the\n\ |
199b2450 | 852 | GDB manual (available as on-line info or a printed manual).\n", gdb_stdout); |
c307bb11 JK |
853 | exit (0); |
854 | } | |
855 | ||
bd5635a1 RP |
856 | if (!quiet) |
857 | { | |
81066208 JG |
858 | /* Print all the junk at the top, with trailing "..." if we are about |
859 | to read a symbol file (possibly slowly). */ | |
860 | print_gnu_advertisement (); | |
199b2450 | 861 | print_gdb_version (gdb_stdout); |
81066208 JG |
862 | if (symarg) |
863 | printf_filtered (".."); | |
bd099407 | 864 | wrap_here(""); |
199b2450 | 865 | gdb_flush (gdb_stdout); /* Force to screen during slow operations */ |
bd5635a1 RP |
866 | } |
867 | ||
81066208 | 868 | error_pre_print = "\n\n"; |
51b57ded FF |
869 | /* We may get more than one warning, don't double space all of them... */ |
870 | warning_pre_print = "\nwarning: "; | |
81066208 | 871 | |
538280d8 FF |
872 | /* We need a default language for parsing expressions, so simple things like |
873 | "set width 0" won't fail if no language is explicitly set in a config file | |
874 | or implicitly set by reading an executable during startup. */ | |
875 | set_language (language_c); | |
b5af69c3 | 876 | expected_language = current_language; /* don't warn about the change. */ |
538280d8 | 877 | |
3a16d640 JG |
878 | /* Read and execute $HOME/.gdbinit file, if it exists. This is done |
879 | *before* all the command line arguments are processed; it sets | |
880 | global parameters, which are independent of what file you are | |
881 | debugging or what directory you are in. */ | |
882 | homedir = getenv ("HOME"); | |
883 | if (homedir) | |
884 | { | |
885 | homeinit = (char *) alloca (strlen (getenv ("HOME")) + | |
886 | strlen (gdbinit) + 10); | |
887 | strcpy (homeinit, getenv ("HOME")); | |
888 | strcat (homeinit, "/"); | |
889 | strcat (homeinit, gdbinit); | |
890 | if (!inhibit_gdbinit && access (homeinit, R_OK) == 0) | |
891 | { | |
9748446f | 892 | if (!SET_TOP_LEVEL ()) |
3a16d640 JG |
893 | source_command (homeinit, 0); |
894 | } | |
895 | do_cleanups (ALL_CLEANUPS); | |
896 | ||
897 | /* Do stats; no need to do them elsewhere since we'll only | |
898 | need them if homedir is set. Make sure that they are | |
899 | zero in case one of them fails (this guarantees that they | |
900 | won't match if either exists). */ | |
901 | ||
902 | memset (&homebuf, 0, sizeof (struct stat)); | |
903 | memset (&cwdbuf, 0, sizeof (struct stat)); | |
904 | ||
905 | stat (homeinit, &homebuf); | |
906 | stat (gdbinit, &cwdbuf); /* We'll only need this if | |
907 | homedir was set. */ | |
908 | } | |
909 | ||
bd5635a1 RP |
910 | /* Now perform all the actions indicated by the arguments. */ |
911 | if (cdarg != NULL) | |
912 | { | |
9748446f | 913 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
914 | { |
915 | cd_command (cdarg, 0); | |
bd5635a1 RP |
916 | } |
917 | } | |
f266e564 JK |
918 | do_cleanups (ALL_CLEANUPS); |
919 | ||
bd5635a1 | 920 | for (i = 0; i < ndir; i++) |
9748446f | 921 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 922 | directory_command (dirarg[i], 0); |
51b57ded | 923 | free ((PTR)dirarg); |
f266e564 JK |
924 | do_cleanups (ALL_CLEANUPS); |
925 | ||
bd5635a1 RP |
926 | if (execarg != NULL |
927 | && symarg != NULL | |
2e4964ad | 928 | && STREQ (execarg, symarg)) |
bd5635a1 RP |
929 | { |
930 | /* The exec file and the symbol-file are the same. If we can't open | |
931 | it, better only print one error message. */ | |
9748446f | 932 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
933 | { |
934 | exec_file_command (execarg, !batch); | |
81066208 | 935 | symbol_file_command (symarg, 0); |
bd5635a1 RP |
936 | } |
937 | } | |
938 | else | |
939 | { | |
940 | if (execarg != NULL) | |
9748446f | 941 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
942 | exec_file_command (execarg, !batch); |
943 | if (symarg != NULL) | |
9748446f | 944 | if (!SET_TOP_LEVEL ()) |
81066208 | 945 | symbol_file_command (symarg, 0); |
bd5635a1 | 946 | } |
f266e564 JK |
947 | do_cleanups (ALL_CLEANUPS); |
948 | ||
81066208 JG |
949 | /* After the symbol file has been read, print a newline to get us |
950 | beyond the copyright line... But errors should still set off | |
951 | the error message with a (single) blank line. */ | |
afe4ca15 JG |
952 | if (!quiet) |
953 | printf_filtered ("\n"); | |
81066208 | 954 | error_pre_print = "\n"; |
318bf84f | 955 | warning_pre_print = "\nwarning: "; |
81066208 | 956 | |
bd5635a1 | 957 | if (corearg != NULL) |
9748446f | 958 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 959 | core_file_command (corearg, !batch); |
9748446f | 960 | else if (isdigit (corearg[0]) && !SET_TOP_LEVEL ()) |
bd5635a1 | 961 | attach_command (corearg, !batch); |
f266e564 | 962 | do_cleanups (ALL_CLEANUPS); |
bd5635a1 RP |
963 | |
964 | if (ttyarg != NULL) | |
9748446f | 965 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 966 | tty_command (ttyarg, !batch); |
f266e564 | 967 | do_cleanups (ALL_CLEANUPS); |
bd5635a1 RP |
968 | |
969 | #ifdef ADDITIONAL_OPTION_HANDLER | |
970 | ADDITIONAL_OPTION_HANDLER; | |
971 | #endif | |
972 | ||
81066208 JG |
973 | /* Error messages should no longer be distinguished with extra output. */ |
974 | error_pre_print = 0; | |
318bf84f | 975 | warning_pre_print = "warning: "; |
81066208 | 976 | |
3a16d640 JG |
977 | /* Read the .gdbinit file in the current directory, *if* it isn't |
978 | the same as the $HOME/.gdbinit file (it should exist, also). */ | |
979 | ||
980 | if (!homedir | |
981 | || memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat))) | |
982 | if (!inhibit_gdbinit && access (gdbinit, R_OK) == 0) | |
bd5635a1 | 983 | { |
9748446f | 984 | if (!SET_TOP_LEVEL ()) |
d75710b0 | 985 | source_command (gdbinit, 0); |
bd5635a1 | 986 | } |
d75710b0 FF |
987 | do_cleanups (ALL_CLEANUPS); |
988 | ||
989 | for (i = 0; i < ncmd; i++) | |
990 | { | |
9748446f | 991 | if (!SET_TOP_LEVEL ()) |
d75710b0 FF |
992 | { |
993 | if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0') | |
994 | read_command_file (stdin); | |
995 | else | |
996 | source_command (cmdarg[i], !batch); | |
997 | do_cleanups (ALL_CLEANUPS); | |
998 | } | |
999 | } | |
51b57ded | 1000 | free ((PTR)cmdarg); |
bd5635a1 | 1001 | |
8b3c897a | 1002 | /* Read in the old history after all the command files have been read. */ |
fc61e9ee | 1003 | init_history(); |
8b3c897a | 1004 | |
bd5635a1 RP |
1005 | if (batch) |
1006 | { | |
1007 | /* We have hit the end of the batch file. */ | |
1008 | exit (0); | |
1009 | } | |
1010 | ||
1011 | /* Do any host- or target-specific hacks. This is used for i960 targets | |
1012 | to force the user to set a nindy target and spec its parameters. */ | |
1013 | ||
1014 | #ifdef BEFORE_MAIN_LOOP_HOOK | |
1015 | BEFORE_MAIN_LOOP_HOOK; | |
1016 | #endif | |
1017 | ||
1018 | /* The command loop. */ | |
1019 | ||
1020 | while (1) | |
1021 | { | |
9748446f | 1022 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 1023 | { |
f266e564 | 1024 | do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */ |
a6b26c44 SS |
1025 | /* start-sanitize-mpw */ |
1026 | #ifdef MPW | |
1027 | /* If we're being a Mac application, go into a Mac-specific | |
1028 | event-handling loop instead. We still want to be inside | |
1029 | the outer loop, because that will catch longjmps resulting | |
1030 | from some command executions. */ | |
1031 | if (mac_app) | |
1032 | mac_command_loop (); | |
1033 | else | |
1034 | #endif /* MPW */ | |
1035 | /* start-sanitize-mpw */ | |
bd5635a1 RP |
1036 | command_loop (); |
1037 | quit_command ((char *)0, instream == stdin); | |
1038 | } | |
1039 | } | |
1040 | /* No exit -- exit is through quit_command. */ | |
1041 | } | |
1042 | ||
b5af69c3 JG |
1043 | void |
1044 | execute_user_command (c, args) | |
1045 | struct cmd_list_element *c; | |
1046 | char *args; | |
1047 | { | |
1048 | register struct command_line *cmdlines; | |
1049 | struct cleanup *old_chain; | |
1050 | ||
1051 | if (args) | |
1052 | error ("User-defined commands cannot take arguments."); | |
1053 | ||
1054 | cmdlines = c->user_commands; | |
1055 | if (cmdlines == 0) | |
1056 | /* Null command */ | |
1057 | return; | |
1058 | ||
1059 | /* Set the instream to 0, indicating execution of a | |
1060 | user-defined function. */ | |
1061 | old_chain = make_cleanup (source_cleanup, instream); | |
1062 | instream = (FILE *) 0; | |
1063 | while (cmdlines) | |
1064 | { | |
1065 | execute_command (cmdlines->line, 0); | |
1066 | cmdlines = cmdlines->next; | |
1067 | } | |
1068 | do_cleanups (old_chain); | |
1069 | } | |
1070 | ||
bd5635a1 RP |
1071 | /* Execute the line P as a command. |
1072 | Pass FROM_TTY as second argument to the defining function. */ | |
1073 | ||
1074 | void | |
1075 | execute_command (p, from_tty) | |
1076 | char *p; | |
1077 | int from_tty; | |
1078 | { | |
1079 | register struct cmd_list_element *c; | |
bd099407 | 1080 | register enum language flang; |
bd099407 | 1081 | static int warned = 0; |
bd5635a1 RP |
1082 | |
1083 | free_all_values (); | |
1084 | ||
1085 | /* This can happen when command_line_input hits end of file. */ | |
1086 | if (p == NULL) | |
1087 | return; | |
1088 | ||
1089 | while (*p == ' ' || *p == '\t') p++; | |
1090 | if (*p) | |
1091 | { | |
1092 | char *arg; | |
1093 | ||
1094 | c = lookup_cmd (&p, cmdlist, "", 0, 1); | |
1095 | /* Pass null arg rather than an empty one. */ | |
1096 | arg = *p ? p : 0; | |
b5af69c3 JG |
1097 | |
1098 | /* If this command has been hooked, run the hook first. */ | |
1099 | if (c->hook) | |
1100 | execute_user_command (c->hook, (char *)0); | |
1101 | ||
bd5635a1 | 1102 | if (c->class == class_user) |
b5af69c3 | 1103 | execute_user_command (c, arg); |
bd5635a1 RP |
1104 | else if (c->type == set_cmd || c->type == show_cmd) |
1105 | do_setshow_command (arg, from_tty & caution, c); | |
30875e1c | 1106 | else if (c->function.cfunc == NO_FUNCTION) |
bd5635a1 RP |
1107 | error ("That is not a command, just a help topic."); |
1108 | else | |
30875e1c | 1109 | (*c->function.cfunc) (arg, from_tty & caution); |
bd099407 JG |
1110 | } |
1111 | ||
afe4ca15 | 1112 | /* Tell the user if the language has changed (except first time). */ |
b5af69c3 | 1113 | if (current_language != expected_language) |
bd099407 JG |
1114 | { |
1115 | if (language_mode == language_mode_auto) { | |
b5af69c3 | 1116 | language_info (1); /* Print what changed. */ |
bd5635a1 | 1117 | } |
bd099407 JG |
1118 | warned = 0; |
1119 | } | |
1120 | ||
1121 | /* Warn the user if the working language does not match the | |
1122 | language of the current frame. Only warn the user if we are | |
1123 | actually running the program, i.e. there is a stack. */ | |
afe4ca15 JG |
1124 | /* FIXME: This should be cacheing the frame and only running when |
1125 | the frame changes. */ | |
bd099407 JG |
1126 | if (target_has_stack) |
1127 | { | |
afe4ca15 JG |
1128 | flang = get_frame_language (); |
1129 | if (!warned | |
1130 | && flang != language_unknown | |
1131 | && flang != current_language->la_language) | |
bd099407 JG |
1132 | { |
1133 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
1134 | warned = 1; | |
1135 | } | |
1136 | } | |
bd5635a1 RP |
1137 | } |
1138 | ||
1139 | /* ARGSUSED */ | |
30875e1c | 1140 | static void |
f266e564 | 1141 | command_loop_marker (foo) |
bd5635a1 RP |
1142 | int foo; |
1143 | { | |
1144 | } | |
1145 | ||
1146 | /* Read commands from `instream' and execute them | |
1147 | until end of file or error reading instream. */ | |
30875e1c | 1148 | static void |
bd5635a1 RP |
1149 | command_loop () |
1150 | { | |
1151 | struct cleanup *old_chain; | |
1152 | char *command; | |
1153 | int stdin_is_tty = ISATTY (stdin); | |
1154 | ||
1155 | while (!feof (instream)) | |
1156 | { | |
1157 | if (window_hook && instream == stdin) | |
1158 | (*window_hook) (instream, prompt); | |
1159 | ||
1160 | quit_flag = 0; | |
1161 | if (instream == stdin && stdin_is_tty) | |
1162 | reinitialize_more_filter (); | |
f266e564 | 1163 | old_chain = make_cleanup (command_loop_marker, 0); |
30875e1c | 1164 | command = command_line_input (instream == stdin ? prompt : (char *) NULL, |
a6b26c44 | 1165 | instream == stdin, "prompt"); |
bd5635a1 RP |
1166 | if (command == 0) |
1167 | return; | |
1168 | execute_command (command, instream == stdin); | |
1169 | /* Do any commands attached to breakpoint we stopped at. */ | |
1170 | bpstat_do_actions (&stop_bpstat); | |
1171 | do_cleanups (old_chain); | |
1172 | } | |
1173 | } | |
1174 | \f | |
1175 | /* Commands call this if they do not want to be repeated by null lines. */ | |
1176 | ||
1177 | void | |
1178 | dont_repeat () | |
1179 | { | |
6c803036 JK |
1180 | if (server_command) |
1181 | return; | |
1182 | ||
bd5635a1 RP |
1183 | /* If we aren't reading from standard input, we are saving the last |
1184 | thing read from stdin in line and don't want to delete it. Null lines | |
1185 | won't repeat here in any case. */ | |
1186 | if (instream == stdin) | |
1187 | *line = 0; | |
1188 | } | |
1189 | \f | |
1190 | /* Read a line from the stream "instream" without command line editing. | |
1191 | ||
1192 | It prints PRROMPT once at the start. | |
bdbd5f50 JG |
1193 | Action is compatible with "readline", e.g. space for the result is |
1194 | malloc'd and should be freed by the caller. | |
bd5635a1 | 1195 | |
bdbd5f50 | 1196 | A NULL return means end of file. */ |
bd5635a1 | 1197 | char * |
bdbd5f50 | 1198 | gdb_readline (prrompt) |
bd5635a1 | 1199 | char *prrompt; |
bd5635a1 RP |
1200 | { |
1201 | int c; | |
1202 | char *result; | |
1203 | int input_index = 0; | |
1204 | int result_size = 80; | |
1205 | ||
1206 | if (prrompt) | |
1207 | { | |
c35475f9 JG |
1208 | /* Don't use a _filtered function here. It causes the assumed |
1209 | character position to be off, since the newline we read from | |
1210 | the user is not accounted for. */ | |
199b2450 | 1211 | fputs_unfiltered (prrompt, gdb_stdout); |
a6b26c44 SS |
1212 | /* start-sanitize-mpw */ |
1213 | #ifdef MPW | |
1214 | /* Move to a new line so the entered line doesn't have a prompt | |
1215 | on the front of it. */ | |
1216 | fputs_unfiltered ("\n", gdb_stdout); | |
1217 | #endif /* MPW */ | |
1218 | /* end-sanitize-mpw */ | |
199b2450 | 1219 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
1220 | } |
1221 | ||
bdbd5f50 | 1222 | result = (char *) xmalloc (result_size); |
bd5635a1 RP |
1223 | |
1224 | while (1) | |
1225 | { | |
1226 | /* Read from stdin if we are executing a user defined command. | |
1227 | This is the right thing for prompt_for_continue, at least. */ | |
1228 | c = fgetc (instream ? instream : stdin); | |
bdbd5f50 JG |
1229 | |
1230 | if (c == EOF) | |
bd5635a1 | 1231 | { |
d0d8484a SG |
1232 | if (input_index > 0) |
1233 | /* The last line does not end with a newline. Return it, and | |
1234 | if we are called again fgetc will still return EOF and | |
1235 | we'll return NULL then. */ | |
1236 | break; | |
bdbd5f50 JG |
1237 | free (result); |
1238 | return NULL; | |
bd5635a1 | 1239 | } |
bd5635a1 | 1240 | |
bdbd5f50 JG |
1241 | if (c == '\n') |
1242 | break; | |
bd5635a1 | 1243 | |
bdbd5f50 JG |
1244 | result[input_index++] = c; |
1245 | while (input_index >= result_size) | |
1246 | { | |
1247 | result_size *= 2; | |
1248 | result = (char *) xrealloc (result, result_size); | |
1249 | } | |
bd5635a1 | 1250 | } |
bdbd5f50 JG |
1251 | |
1252 | result[input_index++] = '\0'; | |
1253 | return result; | |
bd5635a1 RP |
1254 | } |
1255 | ||
bd5635a1 RP |
1256 | /* Variables which control command line editing and history |
1257 | substitution. These variables are given default values at the end | |
1258 | of this file. */ | |
1259 | static int command_editing_p; | |
1260 | static int history_expansion_p; | |
1261 | static int write_history_p; | |
1262 | static int history_size; | |
1263 | static char *history_filename; | |
1264 | ||
c307bb11 JK |
1265 | /* readline uses the word breaks for two things: |
1266 | (1) In figuring out where to point the TEXT parameter to the | |
1267 | rl_completion_entry_function. Since we don't use TEXT for much, | |
1268 | it doesn't matter a lot what the word breaks are for this purpose, but | |
1269 | it does affect how much stuff M-? lists. | |
1270 | (2) If one of the matches contains a word break character, readline | |
1271 | will quote it. That's why we switch between | |
1272 | gdb_completer_word_break_characters and | |
1273 | gdb_completer_command_word_break_characters. I'm not sure when | |
1274 | we need this behavior (perhaps for funky characters in C++ symbols?). */ | |
1275 | ||
bd5635a1 RP |
1276 | /* Variables which are necessary for fancy command line editing. */ |
1277 | char *gdb_completer_word_break_characters = | |
a8e033f2 SG |
1278 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-"; |
1279 | ||
1280 | /* When completing on command names, we remove '-' from the list of | |
1281 | word break characters, since we use it in command names. If the | |
1282 | readline library sees one in any of the current completion strings, | |
1283 | it thinks that the string needs to be quoted and automatically supplies | |
1284 | a leading quote. */ | |
1285 | char *gdb_completer_command_word_break_characters = | |
1286 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,"; | |
1287 | ||
51b57ded FF |
1288 | /* Characters that can be used to quote completion strings. Note that we |
1289 | can't include '"' because the gdb C parser treats such quoted sequences | |
1290 | as strings. */ | |
1291 | char *gdb_completer_quote_characters = | |
1292 | "'"; | |
bd5635a1 RP |
1293 | |
1294 | /* Functions that are used as part of the fancy command line editing. */ | |
1295 | ||
1296 | /* This can be used for functions which don't want to complete on symbols | |
1297 | but don't want to complete on anything else either. */ | |
1298 | /* ARGSUSED */ | |
1299 | char ** | |
c307bb11 | 1300 | noop_completer (text, prefix) |
bd5635a1 | 1301 | char *text; |
c307bb11 | 1302 | char *prefix; |
bd5635a1 RP |
1303 | { |
1304 | return NULL; | |
1305 | } | |
1306 | ||
bd50d1b0 | 1307 | /* Complete on filenames. */ |
bd50d1b0 | 1308 | char ** |
c307bb11 | 1309 | filename_completer (text, word) |
bd50d1b0 | 1310 | char *text; |
c307bb11 | 1311 | char *word; |
bd50d1b0 JK |
1312 | { |
1313 | /* From readline. */ | |
1314 | extern char *filename_completion_function (); | |
1315 | int subsequent_name; | |
1316 | char **return_val; | |
1317 | int return_val_used; | |
1318 | int return_val_alloced; | |
1319 | ||
1320 | return_val_used = 0; | |
1321 | /* Small for testing. */ | |
1322 | return_val_alloced = 1; | |
1323 | return_val = (char **) xmalloc (return_val_alloced * sizeof (char *)); | |
1324 | ||
1325 | subsequent_name = 0; | |
1326 | while (1) | |
1327 | { | |
1328 | char *p; | |
1329 | p = filename_completion_function (text, subsequent_name); | |
1330 | if (return_val_used >= return_val_alloced) | |
1331 | { | |
1332 | return_val_alloced *= 2; | |
1333 | return_val = | |
1334 | (char **) xrealloc (return_val, | |
1335 | return_val_alloced * sizeof (char *)); | |
1336 | } | |
bd50d1b0 | 1337 | if (p == NULL) |
c307bb11 JK |
1338 | { |
1339 | return_val[return_val_used++] = p; | |
1340 | break; | |
1341 | } | |
1342 | /* Like emacs, don't complete on old versions. Especially useful | |
1343 | in the "source" command. */ | |
1344 | if (p[strlen (p) - 1] == '~') | |
1345 | continue; | |
1346 | ||
1347 | { | |
1348 | char *q; | |
1349 | if (word == text) | |
1350 | /* Return exactly p. */ | |
1351 | return_val[return_val_used++] = p; | |
1352 | else if (word > text) | |
1353 | { | |
1354 | /* Return some portion of p. */ | |
1355 | q = xmalloc (strlen (p) + 5); | |
1356 | strcpy (q, p + (word - text)); | |
1357 | return_val[return_val_used++] = q; | |
1358 | free (p); | |
1359 | } | |
1360 | else | |
1361 | { | |
1362 | /* Return some of TEXT plus p. */ | |
1363 | q = xmalloc (strlen (p) + (text - word) + 5); | |
1364 | strncpy (q, word, text - word); | |
1365 | q[text - word] = '\0'; | |
1366 | strcat (q, p); | |
1367 | return_val[return_val_used++] = q; | |
1368 | free (p); | |
1369 | } | |
1370 | } | |
bd50d1b0 JK |
1371 | subsequent_name = 1; |
1372 | } | |
c307bb11 JK |
1373 | #if 0 |
1374 | /* There is no way to do this just long enough to affect quote inserting | |
1375 | without also affecting the next completion. This should be fixed in | |
1376 | readline. FIXME. */ | |
1377 | /* Insure that readline does the right thing | |
1378 | with respect to inserting quotes. */ | |
1379 | rl_completer_word_break_characters = ""; | |
1380 | #endif | |
bd50d1b0 JK |
1381 | return return_val; |
1382 | } | |
1383 | ||
c307bb11 JK |
1384 | /* Here are some useful test cases for completion. FIXME: These should |
1385 | be put in the test suite. They should be tested with both M-? and TAB. | |
1386 | ||
1387 | "show output-" "radix" | |
1388 | "show output" "-radix" | |
1389 | "p" ambiguous (commands starting with p--path, print, printf, etc.) | |
1390 | "p " ambiguous (all symbols) | |
1391 | "info t foo" no completions | |
1392 | "info t " no completions | |
1393 | "info t" ambiguous ("info target", "info terminal", etc.) | |
1394 | "info ajksdlfk" no completions | |
1395 | "info ajksdlfk " no completions | |
1396 | "info" " " | |
1397 | "info " ambiguous (all info commands) | |
1398 | "p \"a" no completions (string constant) | |
1399 | "p 'a" ambiguous (all symbols starting with a) | |
1400 | "p b-a" ambiguous (all symbols starting with a) | |
1401 | "p b-" ambiguous (all symbols) | |
1402 | "file Make" "file" (word break hard to screw up here) | |
09973223 | 1403 | "file ../gdb.stabs/we" "ird" (needs to not break word at slash) |
c307bb11 JK |
1404 | */ |
1405 | ||
1406 | /* Generate completions one by one for the completer. Each time we are | |
1407 | called return another potential completion to the caller. The function | |
1408 | is misnamed; it just completes on commands or passes the buck to the | |
1409 | command's completer function; the stuff specific to symbol completion | |
1410 | is in make_symbol_completion_list. | |
1411 | ||
1412 | TEXT is readline's idea of the "word" we are looking at; we don't really | |
1413 | like readline's ideas about word breaking so we ignore it. | |
51b57ded FF |
1414 | |
1415 | MATCHES is the number of matches that have currently been collected from | |
1416 | calling this completion function. When zero, then we need to initialize, | |
1417 | otherwise the initialization has already taken place and we can just | |
1418 | return the next potential completion string. | |
30875e1c | 1419 | |
51b57ded FF |
1420 | Returns NULL if there are no more completions, else a pointer to a string |
1421 | which is a possible completion. | |
1422 | ||
1423 | RL_LINE_BUFFER is available to be looked at; it contains the entire text | |
1424 | of the line. RL_POINT is the offset in that line of the cursor. You | |
1425 | should pretend that the line ends at RL_POINT. */ | |
c307bb11 | 1426 | |
30875e1c | 1427 | static char * |
51b57ded | 1428 | symbol_completion_function (text, matches) |
bd5635a1 | 1429 | char *text; |
51b57ded | 1430 | int matches; |
bd5635a1 | 1431 | { |
51b57ded FF |
1432 | static char **list = (char **)NULL; /* Cache of completions */ |
1433 | static int index; /* Next cached completion */ | |
1434 | char *output = NULL; | |
bd5635a1 | 1435 | char *tmp_command, *p; |
c307bb11 JK |
1436 | /* Pointer within tmp_command which corresponds to text. */ |
1437 | char *word; | |
bd5635a1 RP |
1438 | struct cmd_list_element *c, *result_list; |
1439 | ||
51b57ded | 1440 | if (matches == 0) |
bd5635a1 | 1441 | { |
51b57ded FF |
1442 | /* The caller is beginning to accumulate a new set of completions, so |
1443 | we need to find all of them now, and cache them for returning one at | |
1444 | a time on future calls. */ | |
1445 | ||
bd5635a1 | 1446 | if (list) |
51b57ded FF |
1447 | { |
1448 | /* Free the storage used by LIST, but not by the strings inside. | |
1449 | This is because rl_complete_internal () frees the strings. */ | |
1450 | free ((PTR)list); | |
1451 | } | |
bd5635a1 RP |
1452 | list = 0; |
1453 | index = 0; | |
1454 | ||
a8e033f2 SG |
1455 | /* Choose the default set of word break characters to break completions. |
1456 | If we later find out that we are doing completions on command strings | |
1457 | (as opposed to strings supplied by the individual command completer | |
1458 | functions, which can be any string) then we will switch to the | |
1459 | special word break set for command strings, which leaves out the | |
c307bb11 | 1460 | '-' character used in some commands. */ |
bd50d1b0 | 1461 | |
a8e033f2 SG |
1462 | rl_completer_word_break_characters = |
1463 | gdb_completer_word_break_characters; | |
1464 | ||
51b57ded | 1465 | /* Decide whether to complete on a list of gdb commands or on symbols. */ |
bd5635a1 RP |
1466 | tmp_command = (char *) alloca (rl_point + 1); |
1467 | p = tmp_command; | |
c307bb11 | 1468 | |
bd5635a1 RP |
1469 | strncpy (tmp_command, rl_line_buffer, rl_point); |
1470 | tmp_command[rl_point] = '\0'; | |
c307bb11 JK |
1471 | /* Since text always contains some number of characters leading up |
1472 | to rl_point, we can find the equivalent position in tmp_command | |
1473 | by subtracting that many characters from the end of tmp_command. */ | |
1474 | word = tmp_command + rl_point - strlen (text); | |
bd5635a1 RP |
1475 | |
1476 | if (rl_point == 0) | |
1477 | { | |
51b57ded FF |
1478 | /* An empty line we want to consider ambiguous; that is, it |
1479 | could be any command. */ | |
bd5635a1 RP |
1480 | c = (struct cmd_list_element *) -1; |
1481 | result_list = 0; | |
1482 | } | |
1483 | else | |
51b57ded FF |
1484 | { |
1485 | c = lookup_cmd_1 (&p, cmdlist, &result_list, 1); | |
1486 | } | |
bd5635a1 RP |
1487 | |
1488 | /* Move p up to the next interesting thing. */ | |
1489 | while (*p == ' ' || *p == '\t') | |
51b57ded FF |
1490 | { |
1491 | p++; | |
1492 | } | |
bd5635a1 RP |
1493 | |
1494 | if (!c) | |
51b57ded | 1495 | { |
c307bb11 JK |
1496 | /* It is an unrecognized command. So there are no |
1497 | possible completions. */ | |
51b57ded FF |
1498 | list = NULL; |
1499 | } | |
bd5635a1 RP |
1500 | else if (c == (struct cmd_list_element *) -1) |
1501 | { | |
c307bb11 JK |
1502 | char *q; |
1503 | ||
1504 | /* lookup_cmd_1 advances p up to the first ambiguous thing, but | |
1505 | doesn't advance over that thing itself. Do so now. */ | |
1506 | q = p; | |
1507 | while (*q && (isalnum (*q) || *q == '-' || *q == '_')) | |
1508 | ++q; | |
1509 | if (q != tmp_command + rl_point) | |
51b57ded | 1510 | { |
c307bb11 JK |
1511 | /* There is something beyond the ambiguous |
1512 | command, so there are no possible completions. For | |
1513 | example, "info t " or "info t foo" does not complete | |
1514 | to anything, because "info t" can be "info target" or | |
1515 | "info terminal". */ | |
1516 | list = NULL; | |
51b57ded | 1517 | } |
bd5635a1 | 1518 | else |
51b57ded | 1519 | { |
c307bb11 JK |
1520 | /* We're trying to complete on the command which was ambiguous. |
1521 | This we can deal with. */ | |
1522 | if (result_list) | |
1523 | { | |
1524 | list = complete_on_cmdlist (*result_list->prefixlist, p, | |
1525 | word); | |
1526 | } | |
1527 | else | |
1528 | { | |
1529 | list = complete_on_cmdlist (cmdlist, p, word); | |
1530 | } | |
1531 | /* Insure that readline does the right thing with respect to | |
1532 | inserting quotes. */ | |
1533 | rl_completer_word_break_characters = | |
1534 | gdb_completer_command_word_break_characters; | |
51b57ded | 1535 | } |
bd5635a1 RP |
1536 | } |
1537 | else | |
1538 | { | |
c307bb11 | 1539 | /* We've recognized a full command. */ |
bd5635a1 | 1540 | |
c307bb11 | 1541 | if (p == tmp_command + rl_point) |
51b57ded | 1542 | { |
c307bb11 JK |
1543 | /* There is no non-whitespace in the line beyond the command. */ |
1544 | ||
1545 | if (p[-1] == ' ' || p[-1] == '\t') | |
51b57ded | 1546 | { |
c307bb11 JK |
1547 | /* The command is followed by whitespace; we need to complete |
1548 | on whatever comes after command. */ | |
1549 | if (c->prefixlist) | |
1550 | { | |
1551 | /* It is a prefix command; what comes after it is | |
1552 | a subcommand (e.g. "info "). */ | |
1553 | list = complete_on_cmdlist (*c->prefixlist, p, word); | |
1554 | ||
1555 | /* Insure that readline does the right thing | |
1556 | with respect to inserting quotes. */ | |
1557 | rl_completer_word_break_characters = | |
1558 | gdb_completer_command_word_break_characters; | |
1559 | } | |
1560 | else | |
1561 | { | |
1562 | /* It is a normal command; what comes after it is | |
1563 | completed by the command's completer function. */ | |
1564 | list = (*c->completer) (p, word); | |
1565 | } | |
51b57ded | 1566 | } |
bd5635a1 | 1567 | else |
51b57ded | 1568 | { |
c307bb11 JK |
1569 | /* The command is not followed by whitespace; we need to |
1570 | complete on the command itself. e.g. "p" which is a | |
1571 | command itself but also can complete to "print", "ptype" | |
1572 | etc. */ | |
1573 | char *q; | |
1574 | ||
1575 | /* Find the command we are completing on. */ | |
1576 | q = p; | |
1577 | while (q > tmp_command) | |
1578 | { | |
1579 | if (isalnum (q[-1]) || q[-1] == '-' || q[-1] == '_') | |
1580 | --q; | |
1581 | else | |
1582 | break; | |
1583 | } | |
1584 | ||
1585 | list = complete_on_cmdlist (result_list, q, word); | |
1586 | ||
1587 | /* Insure that readline does the right thing | |
1588 | with respect to inserting quotes. */ | |
1589 | rl_completer_word_break_characters = | |
1590 | gdb_completer_command_word_break_characters; | |
51b57ded | 1591 | } |
bd5635a1 RP |
1592 | } |
1593 | else | |
1594 | { | |
c307bb11 JK |
1595 | /* There is non-whitespace beyond the command. */ |
1596 | ||
bd5635a1 RP |
1597 | if (c->prefixlist && !c->allow_unknown) |
1598 | { | |
c307bb11 JK |
1599 | /* It is an unrecognized subcommand of a prefix command, |
1600 | e.g. "info adsfkdj". */ | |
bd5635a1 | 1601 | list = NULL; |
bd5635a1 RP |
1602 | } |
1603 | else | |
51b57ded | 1604 | { |
c307bb11 JK |
1605 | /* It is a normal command. */ |
1606 | list = (*c->completer) (p, word); | |
51b57ded | 1607 | } |
bd5635a1 RP |
1608 | } |
1609 | } | |
1610 | } | |
1611 | ||
51b57ded FF |
1612 | /* If we found a list of potential completions during initialization then |
1613 | dole them out one at a time. The vector of completions is NULL | |
1614 | terminated, so after returning the last one, return NULL (and continue | |
1615 | to do so) each time we are called after that, until a new list is | |
1616 | available. */ | |
bd5635a1 | 1617 | |
51b57ded FF |
1618 | if (list) |
1619 | { | |
1620 | output = list[index]; | |
1621 | if (output) | |
1622 | { | |
1623 | index++; | |
1624 | } | |
1625 | } | |
bd5635a1 | 1626 | |
c307bb11 JK |
1627 | #if 0 |
1628 | /* Can't do this because readline hasn't yet checked the word breaks | |
1629 | for figuring out whether to insert a quote. */ | |
1630 | if (output == NULL) | |
1631 | /* Make sure the word break characters are set back to normal for the | |
1632 | next time that readline tries to complete something. */ | |
1633 | rl_completer_word_break_characters = | |
1634 | gdb_completer_word_break_characters; | |
1635 | #endif | |
1636 | ||
bd5635a1 RP |
1637 | return (output); |
1638 | } | |
51b57ded FF |
1639 | |
1640 | /* Skip over a possibly quoted word (as defined by the quote characters | |
1641 | and word break characters the completer uses). Returns pointer to the | |
1642 | location after the "word". */ | |
1643 | ||
1644 | char * | |
1645 | skip_quoted (str) | |
1646 | char *str; | |
1647 | { | |
1648 | char quote_char = '\0'; | |
1649 | char *scan; | |
1650 | ||
1651 | for (scan = str; *scan != '\0'; scan++) | |
1652 | { | |
1653 | if (quote_char != '\0') | |
1654 | { | |
1655 | /* Ignore everything until the matching close quote char */ | |
1656 | if (*scan == quote_char) | |
1657 | { | |
1658 | /* Found matching close quote. */ | |
1659 | scan++; | |
1660 | break; | |
1661 | } | |
1662 | } | |
1663 | else if (strchr (gdb_completer_quote_characters, *scan)) | |
1664 | { | |
1665 | /* Found start of a quoted string. */ | |
1666 | quote_char = *scan; | |
1667 | } | |
1668 | else if (strchr (gdb_completer_word_break_characters, *scan)) | |
1669 | { | |
1670 | break; | |
1671 | } | |
1672 | } | |
1673 | return (scan); | |
1674 | } | |
1675 | ||
bd5635a1 RP |
1676 | \f |
1677 | #ifdef STOP_SIGNAL | |
1678 | static void | |
30875e1c SG |
1679 | stop_sig (signo) |
1680 | int signo; | |
bd5635a1 RP |
1681 | { |
1682 | #if STOP_SIGNAL == SIGTSTP | |
1683 | signal (SIGTSTP, SIG_DFL); | |
1684 | sigsetmask (0); | |
1685 | kill (getpid (), SIGTSTP); | |
1686 | signal (SIGTSTP, stop_sig); | |
1687 | #else | |
1688 | signal (STOP_SIGNAL, stop_sig); | |
1689 | #endif | |
199b2450 TL |
1690 | printf_unfiltered ("%s", prompt); |
1691 | gdb_flush (gdb_stdout); | |
bd5635a1 RP |
1692 | |
1693 | /* Forget about any previous command -- null line now will do nothing. */ | |
1694 | dont_repeat (); | |
1695 | } | |
1696 | #endif /* STOP_SIGNAL */ | |
1697 | ||
bd5635a1 | 1698 | /* Initialize signal handlers. */ |
f266e564 | 1699 | static void |
30875e1c SG |
1700 | do_nothing (signo) |
1701 | int signo; | |
f266e564 JK |
1702 | { |
1703 | } | |
1704 | ||
bd5635a1 RP |
1705 | static void |
1706 | init_signals () | |
1707 | { | |
bd5635a1 RP |
1708 | signal (SIGINT, request_quit); |
1709 | ||
1710 | /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get | |
1711 | passed to the inferior, which we don't want. It would be | |
1712 | possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but | |
bdbd5f50 | 1713 | on BSD4.3 systems using vfork, that can affect the |
bd5635a1 | 1714 | GDB process as well as the inferior (the signal handling tables |
bdbd5f50 | 1715 | might be in memory, shared between the two). Since we establish |
bd5635a1 RP |
1716 | a handler for SIGQUIT, when we call exec it will set the signal |
1717 | to SIG_DFL for us. */ | |
1718 | signal (SIGQUIT, do_nothing); | |
1719 | if (signal (SIGHUP, do_nothing) != SIG_IGN) | |
1720 | signal (SIGHUP, disconnect); | |
1721 | signal (SIGFPE, float_handler); | |
1eeba686 PB |
1722 | |
1723 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) | |
1724 | signal (SIGWINCH, SIGWINCH_HANDLER); | |
1725 | #endif | |
bd5635a1 RP |
1726 | } |
1727 | \f | |
1728 | /* Read one line from the command input stream `instream' | |
1729 | into the local static buffer `linebuffer' (whose current length | |
1730 | is `linelength'). | |
1731 | The buffer is made bigger as necessary. | |
1732 | Returns the address of the start of the line. | |
1733 | ||
1734 | NULL is returned for end of file. | |
1735 | ||
1736 | *If* the instream == stdin & stdin is a terminal, the line read | |
1737 | is copied into the file line saver (global var char *line, | |
1738 | length linesize) so that it can be duplicated. | |
1739 | ||
1740 | This routine either uses fancy command line editing or | |
1741 | simple input as the user has requested. */ | |
1742 | ||
1743 | char * | |
a6b26c44 | 1744 | command_line_input (prrompt, repeat, annotation_suffix) |
bd5635a1 RP |
1745 | char *prrompt; |
1746 | int repeat; | |
a6b26c44 | 1747 | char *annotation_suffix; |
bd5635a1 RP |
1748 | { |
1749 | static char *linebuffer = 0; | |
30875e1c | 1750 | static unsigned linelength = 0; |
bd5635a1 RP |
1751 | register char *p; |
1752 | char *p1; | |
1753 | char *rl; | |
1754 | char *local_prompt = prrompt; | |
1755 | register int c; | |
1756 | char *nline; | |
1757 | char got_eof = 0; | |
1758 | ||
a6b26c44 | 1759 | if (annotation_level > 1 && instream == stdin) |
6c803036 | 1760 | { |
a6b26c44 SS |
1761 | local_prompt = alloca ((prrompt == NULL ? 0 : strlen (prrompt)) |
1762 | + strlen (annotation_suffix) + 40); | |
1763 | if (prrompt == NULL) | |
1764 | local_prompt[0] = '\0'; | |
1765 | else | |
1766 | strcpy (local_prompt, prrompt); | |
1767 | strcat (local_prompt, "\n\032\032"); | |
1768 | strcat (local_prompt, annotation_suffix); | |
1769 | strcat (local_prompt, "\n"); | |
6c803036 JK |
1770 | } |
1771 | ||
bd5635a1 RP |
1772 | if (linebuffer == 0) |
1773 | { | |
1774 | linelength = 80; | |
1775 | linebuffer = (char *) xmalloc (linelength); | |
1776 | } | |
1777 | ||
1778 | p = linebuffer; | |
1779 | ||
1780 | /* Control-C quits instantly if typed while in this loop | |
1781 | since it should not wait until the user types a newline. */ | |
1782 | immediate_quit++; | |
1783 | #ifdef STOP_SIGNAL | |
c307bb11 JK |
1784 | if (job_control) |
1785 | signal (STOP_SIGNAL, stop_sig); | |
bd5635a1 RP |
1786 | #endif |
1787 | ||
1788 | while (1) | |
1789 | { | |
9e8db445 JK |
1790 | /* Make sure that all output has been output. Some machines may let |
1791 | you get away with leaving out some of the gdb_flush, but not all. */ | |
1792 | wrap_here (""); | |
199b2450 TL |
1793 | gdb_flush (gdb_stdout); |
1794 | gdb_flush (gdb_stderr); | |
e522fb52 | 1795 | |
d6bbac39 JK |
1796 | if (source_file_name != NULL) |
1797 | { | |
1798 | ++source_line_number; | |
1799 | sprintf (source_error, | |
1800 | "%s%s:%d: Error in sourced command file:\n", | |
1801 | source_pre_error, | |
1802 | source_file_name, | |
1803 | source_line_number); | |
1804 | error_pre_print = source_error; | |
1805 | } | |
1806 | ||
6c803036 | 1807 | if (annotation_level > 1 && instream == stdin) |
a6b26c44 SS |
1808 | { |
1809 | printf_unfiltered ("\n\032\032pre-"); | |
1810 | printf_unfiltered (annotation_suffix); | |
1811 | printf_unfiltered ("\n"); | |
1812 | } | |
6c803036 | 1813 | |
bd5635a1 RP |
1814 | /* Don't use fancy stuff if not talking to stdin. */ |
1815 | if (command_editing_p && instream == stdin | |
1816 | && ISATTY (instream)) | |
1817 | rl = readline (local_prompt); | |
1818 | else | |
bdbd5f50 | 1819 | rl = gdb_readline (local_prompt); |
bd5635a1 | 1820 | |
6c803036 | 1821 | if (annotation_level > 1 && instream == stdin) |
a6b26c44 SS |
1822 | { |
1823 | printf_unfiltered ("\n\032\032post-"); | |
1824 | printf_unfiltered (annotation_suffix); | |
1825 | printf_unfiltered ("\n"); | |
1826 | } | |
6c803036 | 1827 | |
bd5635a1 RP |
1828 | if (!rl || rl == (char *) EOF) |
1829 | { | |
1830 | got_eof = 1; | |
1831 | break; | |
1832 | } | |
1833 | if (strlen(rl) + 1 + (p - linebuffer) > linelength) | |
1834 | { | |
1835 | linelength = strlen(rl) + 1 + (p - linebuffer); | |
1836 | nline = (char *) xrealloc (linebuffer, linelength); | |
1837 | p += nline - linebuffer; | |
1838 | linebuffer = nline; | |
1839 | } | |
1840 | p1 = rl; | |
1841 | /* Copy line. Don't copy null at end. (Leaves line alone | |
1842 | if this was just a newline) */ | |
1843 | while (*p1) | |
1844 | *p++ = *p1++; | |
1845 | ||
1846 | free (rl); /* Allocated in readline. */ | |
1847 | ||
1848 | if (p == linebuffer || *(p - 1) != '\\') | |
1849 | break; | |
1850 | ||
1851 | p--; /* Put on top of '\'. */ | |
1852 | local_prompt = (char *) 0; | |
1853 | } | |
1854 | ||
1855 | #ifdef STOP_SIGNAL | |
c307bb11 JK |
1856 | if (job_control) |
1857 | signal (STOP_SIGNAL, SIG_DFL); | |
bd5635a1 RP |
1858 | #endif |
1859 | immediate_quit--; | |
1860 | ||
1861 | if (got_eof) | |
1862 | return NULL; | |
1863 | ||
6c803036 JK |
1864 | #define SERVER_COMMAND_LENGTH 7 |
1865 | server_command = | |
1866 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
1867 | && STREQN (linebuffer, "server ", SERVER_COMMAND_LENGTH); | |
1868 | if (server_command) | |
1869 | { | |
1870 | /* Note that we don't set `line'. Between this and the check in | |
1871 | dont_repeat, this insures that repeating will still do the | |
1872 | right thing. */ | |
1873 | *p = '\0'; | |
1874 | return linebuffer + SERVER_COMMAND_LENGTH; | |
1875 | } | |
1876 | ||
bd5635a1 RP |
1877 | /* Do history expansion if that is wished. */ |
1878 | if (history_expansion_p && instream == stdin | |
1879 | && ISATTY (instream)) | |
1880 | { | |
1881 | char *history_value; | |
1882 | int expanded; | |
1883 | ||
1884 | *p = '\0'; /* Insert null now. */ | |
1885 | expanded = history_expand (linebuffer, &history_value); | |
1886 | if (expanded) | |
1887 | { | |
1888 | /* Print the changes. */ | |
199b2450 | 1889 | printf_unfiltered ("%s\n", history_value); |
bd5635a1 RP |
1890 | |
1891 | /* If there was an error, call this function again. */ | |
1892 | if (expanded < 0) | |
1893 | { | |
1894 | free (history_value); | |
a6b26c44 | 1895 | return command_line_input (prrompt, repeat, annotation_suffix); |
bd5635a1 RP |
1896 | } |
1897 | if (strlen (history_value) > linelength) | |
1898 | { | |
1899 | linelength = strlen (history_value) + 1; | |
1900 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
1901 | } | |
1902 | strcpy (linebuffer, history_value); | |
1903 | p = linebuffer + strlen(linebuffer); | |
1904 | free (history_value); | |
1905 | } | |
1906 | } | |
1907 | ||
1908 | /* If we just got an empty line, and that is supposed | |
1909 | to repeat the previous command, return the value in the | |
1910 | global buffer. */ | |
1911 | if (repeat) | |
1912 | { | |
1913 | if (p == linebuffer) | |
1914 | return line; | |
1915 | p1 = linebuffer; | |
1916 | while (*p1 == ' ' || *p1 == '\t') | |
1917 | p1++; | |
1918 | if (!*p1) | |
1919 | return line; | |
1920 | } | |
1921 | ||
1922 | *p = 0; | |
1923 | ||
1924 | /* Add line to history if appropriate. */ | |
1925 | if (instream == stdin | |
1926 | && ISATTY (stdin) && *linebuffer) | |
1927 | add_history (linebuffer); | |
1928 | ||
a6b26c44 | 1929 | /* Note: lines consisting solely of comments are added to the command |
bd5635a1 RP |
1930 | history. This is useful when you type a command, and then |
1931 | realize you don't want to execute it quite yet. You can comment | |
1932 | out the command and then later fetch it from the value history | |
1933 | and remove the '#'. The kill ring is probably better, but some | |
1934 | people are in the habit of commenting things out. */ | |
1935 | p1 = linebuffer; | |
1936 | while ((c = *p1++) != '\0') | |
1937 | { | |
1938 | if (c == '"') | |
1939 | while ((c = *p1++) != '"') | |
1940 | { | |
1941 | /* Make sure an escaped '"' doesn't make us think the string | |
1942 | is ended. */ | |
1943 | if (c == '\\') | |
1944 | parse_escape (&p1); | |
1945 | if (c == '\0') | |
1946 | break; | |
1947 | } | |
1948 | else if (c == '\'') | |
1949 | while ((c = *p1++) != '\'') | |
1950 | { | |
1951 | /* Make sure an escaped '\'' doesn't make us think the string | |
1952 | is ended. */ | |
1953 | if (c == '\\') | |
1954 | parse_escape (&p1); | |
1955 | if (c == '\0') | |
1956 | break; | |
1957 | } | |
1958 | else if (c == '#') | |
1959 | { | |
1960 | /* Found a comment. */ | |
1961 | p1[-1] = '\0'; | |
1962 | break; | |
1963 | } | |
1964 | } | |
1965 | ||
1966 | /* Save into global buffer if appropriate. */ | |
1967 | if (repeat) | |
1968 | { | |
1969 | if (linelength > linesize) | |
1970 | { | |
1971 | line = xrealloc (line, linelength); | |
1972 | linesize = linelength; | |
1973 | } | |
1974 | strcpy (line, linebuffer); | |
1975 | return line; | |
1976 | } | |
1977 | ||
1978 | return linebuffer; | |
1979 | } | |
1980 | \f | |
1981 | /* Read lines from the input stream | |
1982 | and accumulate them in a chain of struct command_line's | |
1983 | which is then returned. */ | |
1984 | ||
1985 | struct command_line * | |
1986 | read_command_lines () | |
1987 | { | |
1988 | struct command_line *first = 0; | |
1989 | register struct command_line *next, *tail = 0; | |
1990 | register char *p, *p1; | |
1991 | struct cleanup *old_chain = 0; | |
1992 | ||
1993 | while (1) | |
1994 | { | |
1995 | dont_repeat (); | |
a6b26c44 | 1996 | p = command_line_input ((char *) NULL, instream == stdin, "commands"); |
bd5635a1 RP |
1997 | if (p == NULL) |
1998 | /* Treat end of file like "end". */ | |
1999 | break; | |
2000 | ||
2001 | /* Remove leading and trailing blanks. */ | |
2002 | while (*p == ' ' || *p == '\t') p++; | |
2003 | p1 = p + strlen (p); | |
2004 | while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) p1--; | |
2005 | ||
2006 | /* Is this "end"? */ | |
2007 | if (p1 - p == 3 && !strncmp (p, "end", 3)) | |
2008 | break; | |
2009 | ||
2010 | /* No => add this line to the chain of command lines. */ | |
2011 | next = (struct command_line *) xmalloc (sizeof (struct command_line)); | |
2012 | next->line = savestring (p, p1 - p); | |
2013 | next->next = 0; | |
2014 | if (tail) | |
2015 | { | |
2016 | tail->next = next; | |
2017 | } | |
2018 | else | |
2019 | { | |
2020 | /* We just read the first line. | |
2021 | From now on, arrange to throw away the lines we have | |
2022 | if we quit or get an error while inside this function. */ | |
2023 | first = next; | |
2024 | old_chain = make_cleanup (free_command_lines, &first); | |
2025 | } | |
2026 | tail = next; | |
2027 | } | |
2028 | ||
2029 | dont_repeat (); | |
2030 | ||
2031 | /* Now we are about to return the chain to our caller, | |
2032 | so freeing it becomes his responsibility. */ | |
2033 | if (first) | |
2034 | discard_cleanups (old_chain); | |
2035 | return first; | |
2036 | } | |
2037 | ||
2038 | /* Free a chain of struct command_line's. */ | |
2039 | ||
2040 | void | |
2041 | free_command_lines (lptr) | |
2042 | struct command_line **lptr; | |
2043 | { | |
2044 | register struct command_line *l = *lptr; | |
2045 | register struct command_line *next; | |
2046 | ||
2047 | while (l) | |
2048 | { | |
2049 | next = l->next; | |
2050 | free (l->line); | |
51b57ded | 2051 | free ((PTR)l); |
bd5635a1 RP |
2052 | l = next; |
2053 | } | |
2054 | } | |
2055 | \f | |
2056 | /* Add an element to the list of info subcommands. */ | |
2057 | ||
2058 | void | |
2059 | add_info (name, fun, doc) | |
2060 | char *name; | |
30875e1c | 2061 | void (*fun) PARAMS ((char *, int)); |
bd5635a1 RP |
2062 | char *doc; |
2063 | { | |
2064 | add_cmd (name, no_class, fun, doc, &infolist); | |
2065 | } | |
2066 | ||
2067 | /* Add an alias to the list of info subcommands. */ | |
2068 | ||
2069 | void | |
2070 | add_info_alias (name, oldname, abbrev_flag) | |
2071 | char *name; | |
2072 | char *oldname; | |
2073 | int abbrev_flag; | |
2074 | { | |
2075 | add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
2076 | } | |
2077 | ||
2078 | /* The "info" command is defined as a prefix, with allow_unknown = 0. | |
2079 | Therefore, its own definition is called only for "info" with no args. */ | |
2080 | ||
2081 | /* ARGSUSED */ | |
2082 | static void | |
2083 | info_command (arg, from_tty) | |
2084 | char *arg; | |
2085 | int from_tty; | |
2086 | { | |
199b2450 TL |
2087 | printf_unfiltered ("\"info\" must be followed by the name of an info command.\n"); |
2088 | help_list (infolist, "info ", -1, gdb_stdout); | |
bd5635a1 RP |
2089 | } |
2090 | ||
09973223 JK |
2091 | /* The "complete" command is used by Emacs to implement completion. */ |
2092 | ||
2093 | /* ARGSUSED */ | |
2094 | static void | |
2095 | complete_command (arg, from_tty) | |
2096 | char *arg; | |
2097 | int from_tty; | |
2098 | { | |
2099 | int i; | |
2100 | char *completion; | |
2101 | ||
2102 | dont_repeat (); | |
2103 | ||
0c1af47f JK |
2104 | if (arg == NULL) |
2105 | { | |
2106 | rl_line_buffer[0] = '\0'; | |
2107 | rl_point = 0; | |
2108 | } | |
2109 | else | |
2110 | { | |
2111 | strcpy (rl_line_buffer, arg); | |
2112 | rl_point = strlen (arg); | |
2113 | } | |
09973223 JK |
2114 | |
2115 | for (completion = symbol_completion_function (rl_line_buffer, i = 0); | |
2116 | completion; | |
2117 | completion = symbol_completion_function (rl_line_buffer, ++i)) | |
2118 | printf_unfiltered ("%s\n", completion); | |
2119 | } | |
2120 | ||
bd5635a1 RP |
2121 | /* The "show" command with no arguments shows all the settings. */ |
2122 | ||
2123 | /* ARGSUSED */ | |
2124 | static void | |
2125 | show_command (arg, from_tty) | |
2126 | char *arg; | |
2127 | int from_tty; | |
2128 | { | |
2129 | cmd_show_list (showlist, from_tty, ""); | |
2130 | } | |
2131 | \f | |
2132 | /* Add an element to the list of commands. */ | |
2133 | ||
2134 | void | |
2135 | add_com (name, class, fun, doc) | |
2136 | char *name; | |
2137 | enum command_class class; | |
30875e1c | 2138 | void (*fun) PARAMS ((char *, int)); |
bd5635a1 RP |
2139 | char *doc; |
2140 | { | |
2141 | add_cmd (name, class, fun, doc, &cmdlist); | |
2142 | } | |
2143 | ||
2144 | /* Add an alias or abbreviation command to the list of commands. */ | |
2145 | ||
2146 | void | |
2147 | add_com_alias (name, oldname, class, abbrev_flag) | |
2148 | char *name; | |
2149 | char *oldname; | |
2150 | enum command_class class; | |
2151 | int abbrev_flag; | |
2152 | { | |
2153 | add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
2154 | } | |
2155 | ||
2156 | void | |
2157 | error_no_arg (why) | |
2158 | char *why; | |
2159 | { | |
2160 | error ("Argument required (%s).", why); | |
2161 | } | |
2162 | ||
e1ce8aa5 | 2163 | /* ARGSUSED */ |
bd5635a1 RP |
2164 | static void |
2165 | help_command (command, from_tty) | |
2166 | char *command; | |
2167 | int from_tty; /* Ignored */ | |
2168 | { | |
199b2450 | 2169 | help_cmd (command, gdb_stdout); |
bd5635a1 RP |
2170 | } |
2171 | \f | |
2172 | static void | |
2173 | validate_comname (comname) | |
2174 | char *comname; | |
2175 | { | |
2176 | register char *p; | |
2177 | ||
2178 | if (comname == 0) | |
2179 | error_no_arg ("name of command to define"); | |
2180 | ||
2181 | p = comname; | |
2182 | while (*p) | |
2183 | { | |
c2e4669f | 2184 | if (!isalnum(*p) && *p != '-') |
bd5635a1 RP |
2185 | error ("Junk in argument list: \"%s\"", p); |
2186 | p++; | |
2187 | } | |
2188 | } | |
2189 | ||
51b57ded FF |
2190 | /* This is just a placeholder in the command data structures. */ |
2191 | static void | |
2192 | user_defined_command (ignore, from_tty) | |
2193 | char *ignore; | |
2194 | int from_tty; | |
2195 | { | |
2196 | } | |
2197 | ||
bd5635a1 RP |
2198 | static void |
2199 | define_command (comname, from_tty) | |
2200 | char *comname; | |
2201 | int from_tty; | |
2202 | { | |
2203 | register struct command_line *cmds; | |
fb29d681 | 2204 | register struct cmd_list_element *c, *newc, *hookc = 0; |
bd5635a1 | 2205 | char *tem = comname; |
b5af69c3 JG |
2206 | #define HOOK_STRING "hook-" |
2207 | #define HOOK_LEN 5 | |
bd5635a1 RP |
2208 | |
2209 | validate_comname (comname); | |
2210 | ||
afe4ca15 | 2211 | /* Look it up, and verify that we got an exact match. */ |
bd5635a1 | 2212 | c = lookup_cmd (&tem, cmdlist, "", -1, 1); |
2e4964ad | 2213 | if (c && !STREQ (comname, c->name)) |
afe4ca15 JG |
2214 | c = 0; |
2215 | ||
bd5635a1 RP |
2216 | if (c) |
2217 | { | |
2218 | if (c->class == class_user || c->class == class_alias) | |
2219 | tem = "Redefine command \"%s\"? "; | |
2220 | else | |
2221 | tem = "Really redefine built-in command \"%s\"? "; | |
c2e4669f JG |
2222 | if (!query (tem, c->name)) |
2223 | error ("Command \"%s\" not redefined.", c->name); | |
bd5635a1 RP |
2224 | } |
2225 | ||
b5af69c3 JG |
2226 | /* If this new command is a hook, then mark the command which it |
2227 | is hooking. Note that we allow hooking `help' commands, so that | |
2228 | we can hook the `stop' pseudo-command. */ | |
2229 | ||
2230 | if (!strncmp (comname, HOOK_STRING, HOOK_LEN)) | |
2231 | { | |
2232 | /* Look up cmd it hooks, and verify that we got an exact match. */ | |
2233 | tem = comname+HOOK_LEN; | |
2234 | hookc = lookup_cmd (&tem, cmdlist, "", -1, 0); | |
2e4964ad | 2235 | if (hookc && !STREQ (comname+HOOK_LEN, hookc->name)) |
b5af69c3 JG |
2236 | hookc = 0; |
2237 | if (!hookc) | |
2238 | { | |
2239 | warning ("Your new `%s' command does not hook any existing command.", | |
2240 | comname); | |
2241 | if (!query ("Proceed? ", (char *)0)) | |
2242 | error ("Not confirmed."); | |
2243 | } | |
2244 | } | |
2245 | ||
c2e4669f JG |
2246 | comname = savestring (comname, strlen (comname)); |
2247 | ||
b5af69c3 | 2248 | /* If the rest of the commands will be case insensitive, this one |
c2e4669f JG |
2249 | should behave in the same manner. */ |
2250 | for (tem = comname; *tem; tem++) | |
2251 | if (isupper(*tem)) *tem = tolower(*tem); | |
2252 | ||
bd5635a1 RP |
2253 | if (from_tty) |
2254 | { | |
199b2450 | 2255 | printf_unfiltered ("Type commands for definition of \"%s\".\n\ |
bd5635a1 | 2256 | End with a line saying just \"end\".\n", comname); |
199b2450 | 2257 | gdb_flush (gdb_stdout); |
bd5635a1 | 2258 | } |
bd5635a1 RP |
2259 | |
2260 | cmds = read_command_lines (); | |
2261 | ||
2262 | if (c && c->class == class_user) | |
2263 | free_command_lines (&c->user_commands); | |
2264 | ||
51b57ded | 2265 | newc = add_cmd (comname, class_user, user_defined_command, |
bd5635a1 RP |
2266 | (c && c->class == class_user) |
2267 | ? c->doc : savestring ("User-defined.", 13), &cmdlist); | |
2268 | newc->user_commands = cmds; | |
b5af69c3 JG |
2269 | |
2270 | /* If this new command is a hook, then mark both commands as being | |
2271 | tied. */ | |
2272 | if (hookc) | |
2273 | { | |
2274 | hookc->hook = newc; /* Target gets hooked. */ | |
2275 | newc->hookee = hookc; /* We are marked as hooking target cmd. */ | |
2276 | } | |
bd5635a1 RP |
2277 | } |
2278 | ||
2279 | static void | |
2280 | document_command (comname, from_tty) | |
2281 | char *comname; | |
2282 | int from_tty; | |
2283 | { | |
2284 | struct command_line *doclines; | |
2285 | register struct cmd_list_element *c; | |
2286 | char *tem = comname; | |
2287 | ||
2288 | validate_comname (comname); | |
2289 | ||
2290 | c = lookup_cmd (&tem, cmdlist, "", 0, 1); | |
2291 | ||
2292 | if (c->class != class_user) | |
2293 | error ("Command \"%s\" is built-in.", comname); | |
2294 | ||
2295 | if (from_tty) | |
199b2450 | 2296 | printf_unfiltered ("Type documentation for \"%s\".\n\ |
bd5635a1 RP |
2297 | End with a line saying just \"end\".\n", comname); |
2298 | ||
2299 | doclines = read_command_lines (); | |
2300 | ||
2301 | if (c->doc) free (c->doc); | |
2302 | ||
2303 | { | |
2304 | register struct command_line *cl1; | |
2305 | register int len = 0; | |
2306 | ||
2307 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2308 | len += strlen (cl1->line) + 1; | |
2309 | ||
2310 | c->doc = (char *) xmalloc (len + 1); | |
2311 | *c->doc = 0; | |
2312 | ||
2313 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2314 | { | |
2315 | strcat (c->doc, cl1->line); | |
2316 | if (cl1->next) | |
2317 | strcat (c->doc, "\n"); | |
2318 | } | |
2319 | } | |
2320 | ||
2321 | free_command_lines (&doclines); | |
2322 | } | |
2323 | \f | |
2324 | static void | |
81066208 | 2325 | print_gnu_advertisement() |
bd5635a1 | 2326 | { |
199b2450 | 2327 | printf_unfiltered ("\ |
bd5635a1 | 2328 | GDB is free software and you are welcome to distribute copies of it\n\ |
afe4ca15 JG |
2329 | under certain conditions; type \"show copying\" to see the conditions.\n\ |
2330 | There is absolutely no warranty for GDB; type \"show warranty\" for details.\n\ | |
81066208 JG |
2331 | "); |
2332 | } | |
2333 | ||
2334 | static void | |
fb29d681 | 2335 | print_gdb_version (stream) |
199b2450 | 2336 | GDB_FILE *stream; |
81066208 | 2337 | { |
fb29d681 | 2338 | fprintf_filtered (stream, "\ |
a28d16d3 | 2339 | GDB %s (%s", version, host_name); |
57cb418a | 2340 | |
a28d16d3 JK |
2341 | if (!STREQ (host_name, target_name)) |
2342 | fprintf_filtered (stream, " --target %s", target_name); | |
57cb418a RP |
2343 | |
2344 | fprintf_filtered (stream, "), "); | |
2345 | wrap_here(""); | |
8b564df8 | 2346 | fprintf_filtered (stream, "Copyright 1994 Free Software Foundation, Inc."); |
bd5635a1 RP |
2347 | } |
2348 | ||
e1ce8aa5 | 2349 | /* ARGSUSED */ |
bd5635a1 | 2350 | static void |
f266e564 | 2351 | show_version (args, from_tty) |
bd5635a1 RP |
2352 | char *args; |
2353 | int from_tty; | |
2354 | { | |
2355 | immediate_quit++; | |
81066208 | 2356 | print_gnu_advertisement (); |
199b2450 | 2357 | print_gdb_version (gdb_stdout); |
81066208 | 2358 | printf_filtered ("\n"); |
bd5635a1 RP |
2359 | immediate_quit--; |
2360 | } | |
2361 | \f | |
6c803036 JK |
2362 | /* xgdb calls this to reprint the usual GDB prompt. Obsolete now that xgdb |
2363 | is obsolete. */ | |
bd5635a1 RP |
2364 | |
2365 | void | |
2366 | print_prompt () | |
2367 | { | |
199b2450 TL |
2368 | printf_unfiltered ("%s", prompt); |
2369 | gdb_flush (gdb_stdout); | |
bd5635a1 RP |
2370 | } |
2371 | \f | |
2372 | static void | |
2373 | quit_command (args, from_tty) | |
2374 | char *args; | |
2375 | int from_tty; | |
2376 | { | |
25200748 | 2377 | if (inferior_pid != 0 && target_has_execution) |
bd5635a1 | 2378 | { |
6fe90fc8 | 2379 | if (attach_flag) |
bd5635a1 | 2380 | { |
6fe90fc8 | 2381 | if (query ("The program is running. Quit anyway (and detach it)? ")) |
597dc86b SG |
2382 | target_detach (args, from_tty); |
2383 | else | |
6fe90fc8 | 2384 | error ("Not confirmed."); |
bd5635a1 RP |
2385 | } |
2386 | else | |
6fe90fc8 JK |
2387 | { |
2388 | if (query ("The program is running. Quit anyway (and kill it)? ")) | |
2389 | target_kill (); | |
2390 | else | |
2391 | error ("Not confirmed."); | |
2392 | } | |
bd5635a1 | 2393 | } |
1340861c KH |
2394 | /* UDI wants this, to kill the TIP. */ |
2395 | target_close (1); | |
2396 | ||
bd5635a1 RP |
2397 | /* Save the history information if it is appropriate to do so. */ |
2398 | if (write_history_p && history_filename) | |
2399 | write_history (history_filename); | |
1340861c | 2400 | |
bd5635a1 RP |
2401 | exit (0); |
2402 | } | |
2403 | ||
ee0613d1 JG |
2404 | /* Returns whether GDB is running on a terminal and whether the user |
2405 | desires that questions be asked of them on that terminal. */ | |
2406 | ||
bd5635a1 RP |
2407 | int |
2408 | input_from_terminal_p () | |
2409 | { | |
c307bb11 | 2410 | return gdb_has_a_terminal () && (instream == stdin) & caution; |
bd5635a1 RP |
2411 | } |
2412 | \f | |
e1ce8aa5 | 2413 | /* ARGSUSED */ |
bd5635a1 RP |
2414 | static void |
2415 | pwd_command (args, from_tty) | |
2416 | char *args; | |
2417 | int from_tty; | |
2418 | { | |
2419 | if (args) error ("The \"pwd\" command does not take an argument: %s", args); | |
f7402c04 | 2420 | getcwd (dirbuf, sizeof (dirbuf)); |
bd5635a1 | 2421 | |
2e4964ad | 2422 | if (!STREQ (dirbuf, current_directory)) |
199b2450 | 2423 | printf_unfiltered ("Working directory %s\n (canonically %s).\n", |
bd5635a1 RP |
2424 | current_directory, dirbuf); |
2425 | else | |
199b2450 | 2426 | printf_unfiltered ("Working directory %s.\n", current_directory); |
bd5635a1 RP |
2427 | } |
2428 | ||
2429 | static void | |
2430 | cd_command (dir, from_tty) | |
2431 | char *dir; | |
2432 | int from_tty; | |
2433 | { | |
2434 | int len; | |
c307bb11 JK |
2435 | /* Found something other than leading repetitions of "/..". */ |
2436 | int found_real_path; | |
2437 | char *p; | |
bd5635a1 | 2438 | |
9107291d JK |
2439 | /* If the new directory is absolute, repeat is a no-op; if relative, |
2440 | repeat might be useful but is more likely to be a mistake. */ | |
2441 | dont_repeat (); | |
2442 | ||
bd5635a1 RP |
2443 | if (dir == 0) |
2444 | error_no_arg ("new working directory"); | |
2445 | ||
2446 | dir = tilde_expand (dir); | |
2447 | make_cleanup (free, dir); | |
2448 | ||
ee0613d1 JG |
2449 | if (chdir (dir) < 0) |
2450 | perror_with_name (dir); | |
2451 | ||
bd5635a1 RP |
2452 | len = strlen (dir); |
2453 | dir = savestring (dir, len - (len > 1 && dir[len-1] == '/')); | |
2454 | if (dir[0] == '/') | |
2455 | current_directory = dir; | |
2456 | else | |
2457 | { | |
c307bb11 JK |
2458 | if (current_directory[0] == '/' && current_directory[1] == '\0') |
2459 | current_directory = concat (current_directory, dir, NULL); | |
2460 | else | |
2461 | current_directory = concat (current_directory, "/", dir, NULL); | |
bd5635a1 RP |
2462 | free (dir); |
2463 | } | |
2464 | ||
2465 | /* Now simplify any occurrences of `.' and `..' in the pathname. */ | |
2466 | ||
c307bb11 JK |
2467 | found_real_path = 0; |
2468 | for (p = current_directory; *p;) | |
bd5635a1 | 2469 | { |
c307bb11 JK |
2470 | if (p[0] == '/' && p[1] == '.' && (p[2] == 0 || p[2] == '/')) |
2471 | strcpy (p, p + 2); | |
2472 | else if (p[0] == '/' && p[1] == '.' && p[2] == '.' | |
2473 | && (p[3] == 0 || p[3] == '/')) | |
bd5635a1 | 2474 | { |
c307bb11 | 2475 | if (found_real_path) |
bd5635a1 | 2476 | { |
c307bb11 JK |
2477 | /* Search backwards for the directory just before the "/.." |
2478 | and obliterate it and the "/..". */ | |
bd5635a1 | 2479 | char *q = p; |
c307bb11 JK |
2480 | while (q != current_directory && q[-1] != '/') |
2481 | --q; | |
2482 | ||
2483 | if (q == current_directory) | |
2484 | /* current_directory is | |
2485 | a relative pathname ("can't happen"--leave it alone). */ | |
2486 | ++p; | |
2487 | else | |
bd5635a1 | 2488 | { |
c307bb11 JK |
2489 | strcpy (q - 1, p + 3); |
2490 | p = q - 1; | |
bd5635a1 RP |
2491 | } |
2492 | } | |
c307bb11 JK |
2493 | else |
2494 | /* We are dealing with leading repetitions of "/..", for example | |
2495 | "/../..", which is the Mach super-root. */ | |
2496 | p += 3; | |
2497 | } | |
2498 | else | |
2499 | { | |
2500 | found_real_path = 1; | |
2501 | ++p; | |
bd5635a1 RP |
2502 | } |
2503 | } | |
2504 | ||
bd5635a1 RP |
2505 | forget_cached_source_info (); |
2506 | ||
2507 | if (from_tty) | |
2508 | pwd_command ((char *) 0, 1); | |
2509 | } | |
2510 | \f | |
d6bbac39 JK |
2511 | struct source_cleanup_lines_args { |
2512 | int old_line; | |
2513 | char *old_file; | |
2514 | char *old_pre_error; | |
2515 | char *old_error_pre_print; | |
2516 | }; | |
2517 | ||
2518 | static void | |
2519 | source_cleanup_lines (args) | |
2520 | PTR args; | |
2521 | { | |
2522 | struct source_cleanup_lines_args *p = | |
2523 | (struct source_cleanup_lines_args *)args; | |
2524 | source_line_number = p->old_line; | |
2525 | source_file_name = p->old_file; | |
2526 | source_pre_error = p->old_pre_error; | |
2527 | error_pre_print = p->old_error_pre_print; | |
2528 | } | |
2529 | ||
e1ce8aa5 | 2530 | /* ARGSUSED */ |
bd5635a1 RP |
2531 | static void |
2532 | source_command (args, from_tty) | |
2533 | char *args; | |
2534 | int from_tty; | |
2535 | { | |
2536 | FILE *stream; | |
d6bbac39 | 2537 | struct cleanup *old_cleanups; |
bd5635a1 | 2538 | char *file = args; |
d6bbac39 JK |
2539 | struct source_cleanup_lines_args old_lines; |
2540 | int needed_length; | |
bd5635a1 | 2541 | |
6fe90fc8 JK |
2542 | if (file == NULL) |
2543 | { | |
2544 | error ("source command requires pathname of file to source."); | |
2545 | } | |
bd5635a1 RP |
2546 | |
2547 | file = tilde_expand (file); | |
d6bbac39 | 2548 | old_cleanups = make_cleanup (free, file); |
bd5635a1 | 2549 | |
6fe90fc8 | 2550 | stream = fopen (file, FOPEN_RT); |
bd5635a1 RP |
2551 | if (stream == 0) |
2552 | perror_with_name (file); | |
2553 | ||
d6bbac39 JK |
2554 | make_cleanup (fclose, stream); |
2555 | ||
2556 | old_lines.old_line = source_line_number; | |
2557 | old_lines.old_file = source_file_name; | |
2558 | old_lines.old_pre_error = source_pre_error; | |
2559 | old_lines.old_error_pre_print = error_pre_print; | |
2560 | make_cleanup (source_cleanup_lines, &old_lines); | |
2561 | source_line_number = 0; | |
2562 | source_file_name = file; | |
2563 | source_pre_error = error_pre_print == NULL ? "" : error_pre_print; | |
2564 | source_pre_error = savestring (source_pre_error, strlen (source_pre_error)); | |
2565 | make_cleanup (free, source_pre_error); | |
2566 | /* This will get set every time we read a line. So it won't stay "" for | |
2567 | long. */ | |
2568 | error_pre_print = ""; | |
2569 | ||
2570 | needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80; | |
2571 | if (source_error_allocated < needed_length) | |
2572 | { | |
2573 | source_error_allocated *= 2; | |
2574 | if (source_error_allocated < needed_length) | |
2575 | source_error_allocated = needed_length; | |
2576 | if (source_error == NULL) | |
2577 | source_error = xmalloc (source_error_allocated); | |
2578 | else | |
2579 | source_error = xrealloc (source_error, source_error_allocated); | |
2580 | } | |
bd5635a1 RP |
2581 | |
2582 | read_command_file (stream); | |
2583 | ||
d6bbac39 | 2584 | do_cleanups (old_cleanups); |
bd5635a1 RP |
2585 | } |
2586 | ||
2587 | /* ARGSUSED */ | |
2588 | static void | |
2589 | echo_command (text, from_tty) | |
2590 | char *text; | |
2591 | int from_tty; | |
2592 | { | |
2593 | char *p = text; | |
2594 | register int c; | |
2595 | ||
2596 | if (text) | |
a8a69e63 | 2597 | while ((c = *p++) != '\0') |
bd5635a1 RP |
2598 | { |
2599 | if (c == '\\') | |
2600 | { | |
2601 | /* \ at end of argument is used after spaces | |
2602 | so they won't be lost. */ | |
2603 | if (*p == 0) | |
2604 | return; | |
2605 | ||
2606 | c = parse_escape (&p); | |
2607 | if (c >= 0) | |
afe4ca15 | 2608 | printf_filtered ("%c", c); |
bd5635a1 RP |
2609 | } |
2610 | else | |
afe4ca15 | 2611 | printf_filtered ("%c", c); |
bd5635a1 | 2612 | } |
afe4ca15 JG |
2613 | |
2614 | /* Force this output to appear now. */ | |
2615 | wrap_here (""); | |
199b2450 | 2616 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
2617 | } |
2618 | ||
bd5635a1 RP |
2619 | \f |
2620 | /* Functions to manipulate command line editing control variables. */ | |
2621 | ||
f266e564 | 2622 | /* Number of commands to print in each call to show_commands. */ |
bd5635a1 RP |
2623 | #define Hist_print 10 |
2624 | static void | |
f266e564 | 2625 | show_commands (args, from_tty) |
bd5635a1 RP |
2626 | char *args; |
2627 | int from_tty; | |
2628 | { | |
2629 | /* Index for history commands. Relative to history_base. */ | |
2630 | int offset; | |
2631 | ||
2632 | /* Number of the history entry which we are planning to display next. | |
2633 | Relative to history_base. */ | |
2634 | static int num = 0; | |
2635 | ||
2636 | /* The first command in the history which doesn't exist (i.e. one more | |
2637 | than the number of the last command). Relative to history_base. */ | |
2638 | int hist_len; | |
2639 | ||
8b564df8 | 2640 | extern HIST_ENTRY *history_get PARAMS ((int)); |
bd5635a1 | 2641 | |
bd5635a1 RP |
2642 | /* Print out some of the commands from the command history. */ |
2643 | /* First determine the length of the history list. */ | |
2644 | hist_len = history_size; | |
2645 | for (offset = 0; offset < history_size; offset++) | |
2646 | { | |
2647 | if (!history_get (history_base + offset)) | |
2648 | { | |
2649 | hist_len = offset; | |
2650 | break; | |
2651 | } | |
2652 | } | |
2653 | ||
2654 | if (args) | |
2655 | { | |
2656 | if (args[0] == '+' && args[1] == '\0') | |
2657 | /* "info editing +" should print from the stored position. */ | |
2658 | ; | |
2659 | else | |
2660 | /* "info editing <exp>" should print around command number <exp>. */ | |
2661 | num = (parse_and_eval_address (args) - history_base) - Hist_print / 2; | |
2662 | } | |
ee0613d1 | 2663 | /* "show commands" means print the last Hist_print commands. */ |
bd5635a1 RP |
2664 | else |
2665 | { | |
2666 | num = hist_len - Hist_print; | |
2667 | } | |
2668 | ||
2669 | if (num < 0) | |
2670 | num = 0; | |
2671 | ||
2672 | /* If there are at least Hist_print commands, we want to display the last | |
2673 | Hist_print rather than, say, the last 6. */ | |
2674 | if (hist_len - num < Hist_print) | |
2675 | { | |
2676 | num = hist_len - Hist_print; | |
2677 | if (num < 0) | |
2678 | num = 0; | |
2679 | } | |
2680 | ||
bd5635a1 RP |
2681 | for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) |
2682 | { | |
2683 | printf_filtered ("%5d %s\n", history_base + offset, | |
2684 | (history_get (history_base + offset))->line); | |
2685 | } | |
2686 | ||
2687 | /* The next command we want to display is the next one that we haven't | |
2688 | displayed yet. */ | |
2689 | num += Hist_print; | |
2690 | ||
2691 | /* If the user repeats this command with return, it should do what | |
ee0613d1 JG |
2692 | "show commands +" does. This is unnecessary if arg is null, |
2693 | because "show commands +" is not useful after "show commands". */ | |
bd5635a1 RP |
2694 | if (from_tty && args) |
2695 | { | |
2696 | args[0] = '+'; | |
2697 | args[1] = '\0'; | |
2698 | } | |
2699 | } | |
2700 | ||
2701 | /* Called by do_setshow_command. */ | |
e1ce8aa5 | 2702 | /* ARGSUSED */ |
bd5635a1 RP |
2703 | static void |
2704 | set_history_size_command (args, from_tty, c) | |
2705 | char *args; | |
2706 | int from_tty; | |
2707 | struct cmd_list_element *c; | |
2708 | { | |
6fe90fc8 | 2709 | if (history_size == INT_MAX) |
bd5635a1 | 2710 | unstifle_history (); |
c2e4669f | 2711 | else if (history_size >= 0) |
bd5635a1 | 2712 | stifle_history (history_size); |
c2e4669f JG |
2713 | else |
2714 | { | |
6fe90fc8 | 2715 | history_size = INT_MAX; |
c2e4669f JG |
2716 | error ("History size must be non-negative"); |
2717 | } | |
bd5635a1 RP |
2718 | } |
2719 | ||
e1ce8aa5 | 2720 | /* ARGSUSED */ |
bd5635a1 RP |
2721 | static void |
2722 | set_history (args, from_tty) | |
2723 | char *args; | |
2724 | int from_tty; | |
2725 | { | |
199b2450 TL |
2726 | printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n"); |
2727 | help_list (sethistlist, "set history ", -1, gdb_stdout); | |
bd5635a1 RP |
2728 | } |
2729 | ||
e1ce8aa5 | 2730 | /* ARGSUSED */ |
bd5635a1 RP |
2731 | static void |
2732 | show_history (args, from_tty) | |
2733 | char *args; | |
2734 | int from_tty; | |
2735 | { | |
f266e564 | 2736 | cmd_show_list (showhistlist, from_tty, ""); |
bd5635a1 RP |
2737 | } |
2738 | ||
2739 | int info_verbose = 0; /* Default verbose msgs off */ | |
2740 | ||
2741 | /* Called by do_setshow_command. An elaborate joke. */ | |
e1ce8aa5 | 2742 | /* ARGSUSED */ |
bd5635a1 RP |
2743 | static void |
2744 | set_verbose (args, from_tty, c) | |
2745 | char *args; | |
2746 | int from_tty; | |
2747 | struct cmd_list_element *c; | |
2748 | { | |
2749 | char *cmdname = "verbose"; | |
2750 | struct cmd_list_element *showcmd; | |
2751 | ||
2752 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
2753 | ||
2754 | if (info_verbose) | |
2755 | { | |
2756 | c->doc = "Set verbose printing of informational messages."; | |
2757 | showcmd->doc = "Show verbose printing of informational messages."; | |
2758 | } | |
2759 | else | |
2760 | { | |
2761 | c->doc = "Set verbosity."; | |
2762 | showcmd->doc = "Show verbosity."; | |
2763 | } | |
2764 | } | |
2765 | ||
2766 | static void | |
30875e1c SG |
2767 | float_handler (signo) |
2768 | int signo; | |
bd5635a1 RP |
2769 | { |
2770 | /* This message is based on ANSI C, section 4.7. Note that integer | |
2771 | divide by zero causes this, so "float" is a misnomer. */ | |
76a0ffb4 | 2772 | signal (SIGFPE, float_handler); |
bd5635a1 RP |
2773 | error ("Erroneous arithmetic operation."); |
2774 | } | |
2775 | ||
2776 | /* Return whether we are running a batch file or from terminal. */ | |
2777 | int | |
2778 | batch_mode () | |
2779 | { | |
2780 | return !(instream == stdin && ISATTY (stdin)); | |
2781 | } | |
2782 | ||
2783 | \f | |
2784 | static void | |
fc61e9ee | 2785 | init_cmd_lists () |
bd5635a1 | 2786 | { |
0239d9b3 FF |
2787 | cmdlist = NULL; |
2788 | infolist = NULL; | |
2789 | enablelist = NULL; | |
2790 | disablelist = NULL; | |
2791 | deletelist = NULL; | |
2792 | enablebreaklist = NULL; | |
2793 | setlist = NULL; | |
2794 | unsetlist = NULL; | |
bd5635a1 | 2795 | showlist = NULL; |
0239d9b3 | 2796 | sethistlist = NULL; |
bd5635a1 | 2797 | showhistlist = NULL; |
0239d9b3 FF |
2798 | unsethistlist = NULL; |
2799 | #if MAINTENANCE_CMDS | |
2800 | maintenancelist = NULL; | |
2801 | maintenanceinfolist = NULL; | |
a8e033f2 | 2802 | maintenanceprintlist = NULL; |
0239d9b3 FF |
2803 | #endif |
2804 | setprintlist = NULL; | |
2805 | showprintlist = NULL; | |
2806 | setchecklist = NULL; | |
2807 | showchecklist = NULL; | |
bd5635a1 RP |
2808 | } |
2809 | ||
8b3c897a SG |
2810 | /* Init the history buffer. Note that we are called after the init file(s) |
2811 | * have been read so that the user can change the history file via his | |
2812 | * .gdbinit file (for instance). The GDBHISTFILE environment variable | |
2813 | * overrides all of this. | |
2814 | */ | |
2815 | ||
bd5635a1 | 2816 | static void |
fc61e9ee | 2817 | init_history() |
bd5635a1 | 2818 | { |
bd5635a1 | 2819 | char *tmpenv; |
bd5635a1 | 2820 | |
318bf84f FF |
2821 | tmpenv = getenv ("HISTSIZE"); |
2822 | if (tmpenv) | |
bd5635a1 | 2823 | history_size = atoi (tmpenv); |
8b3c897a | 2824 | else if (!history_size) |
bd5635a1 RP |
2825 | history_size = 256; |
2826 | ||
2827 | stifle_history (history_size); | |
2828 | ||
318bf84f FF |
2829 | tmpenv = getenv ("GDBHISTFILE"); |
2830 | if (tmpenv) | |
bd5635a1 | 2831 | history_filename = savestring (tmpenv, strlen(tmpenv)); |
8b3c897a | 2832 | else if (!history_filename) { |
bd5635a1 RP |
2833 | /* We include the current directory so that if the user changes |
2834 | directories the file written will be the same as the one | |
2835 | that was read. */ | |
7d9884b9 | 2836 | history_filename = concat (current_directory, "/.gdb_history", NULL); |
8b3c897a | 2837 | } |
bd5635a1 | 2838 | read_history (history_filename); |
8b3c897a | 2839 | } |
bd5635a1 | 2840 | |
8b3c897a | 2841 | static void |
fc61e9ee | 2842 | init_main () |
8b3c897a SG |
2843 | { |
2844 | struct cmd_list_element *c; | |
2845 | ||
2846 | #ifdef DEFAULT_PROMPT | |
2847 | prompt = savestring (DEFAULT_PROMPT, strlen(DEFAULT_PROMPT)); | |
2848 | #else | |
2849 | prompt = savestring ("(gdb) ", 6); | |
2850 | #endif | |
2851 | ||
2852 | /* Set the important stuff up for command editing. */ | |
2853 | command_editing_p = 1; | |
2854 | history_expansion_p = 0; | |
2855 | write_history_p = 0; | |
2856 | ||
bd5635a1 RP |
2857 | /* Setup important stuff for command line editing. */ |
2858 | rl_completion_entry_function = (int (*)()) symbol_completion_function; | |
2859 | rl_completer_word_break_characters = gdb_completer_word_break_characters; | |
51b57ded | 2860 | rl_completer_quote_characters = gdb_completer_quote_characters; |
bd5635a1 RP |
2861 | rl_readline_name = "gdb"; |
2862 | ||
2863 | /* Define the classes of commands. | |
2864 | They will appear in the help list in the reverse of this order. */ | |
2865 | ||
0239d9b3 FF |
2866 | add_cmd ("internals", class_maintenance, NO_FUNCTION, |
2867 | "Maintenance commands.\n\ | |
2868 | Some gdb commands are provided just for use by gdb maintainers.\n\ | |
2869 | These commands are subject to frequent change, and may not be as\n\ | |
2870 | well documented as user commands.", | |
2871 | &cmdlist); | |
bd5635a1 RP |
2872 | add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist); |
2873 | add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist); | |
2874 | add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\ | |
2875 | The commands in this class are those defined by the user.\n\ | |
2876 | Use the \"define\" command to define a command.", &cmdlist); | |
2877 | add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist); | |
2878 | add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist); | |
2879 | add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist); | |
2880 | add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist); | |
2881 | add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist); | |
2882 | add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\ | |
2883 | The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\ | |
2884 | counting from zero for the innermost (currently executing) frame.\n\n\ | |
2885 | At any time gdb identifies one frame as the \"selected\" frame.\n\ | |
2886 | Variable lookups are done with respect to the selected frame.\n\ | |
2887 | When the program being debugged stops, gdb selects the innermost frame.\n\ | |
2888 | The commands below can be used to select other frames by number or address.", | |
2889 | &cmdlist); | |
2890 | add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist); | |
2891 | ||
2892 | add_com ("pwd", class_files, pwd_command, | |
2893 | "Print working directory. This is used for your program as well."); | |
df0f0dcc | 2894 | c = add_cmd ("cd", class_files, cd_command, |
bd5635a1 RP |
2895 | "Set working directory to DIR for debugger and program being debugged.\n\ |
2896 | The change does not take effect for the program being debugged\n\ | |
df0f0dcc JK |
2897 | until the next time it is started.", &cmdlist); |
2898 | c->completer = filename_completer; | |
bd5635a1 RP |
2899 | |
2900 | add_show_from_set | |
2901 | (add_set_cmd ("prompt", class_support, var_string, (char *)&prompt, | |
2902 | "Set gdb's prompt", | |
2903 | &setlist), | |
2904 | &showlist); | |
2905 | ||
2906 | add_com ("echo", class_support, echo_command, | |
2907 | "Print a constant string. Give string as argument.\n\ | |
2908 | C escape sequences may be used in the argument.\n\ | |
2909 | No newline is added at the end of the argument;\n\ | |
2910 | use \"\\n\" if you want a newline to be printed.\n\ | |
2911 | Since leading and trailing whitespace are ignored in command arguments,\n\ | |
2912 | if you want to print some you must use \"\\\" before leading whitespace\n\ | |
2913 | to be printed or after trailing whitespace."); | |
2914 | add_com ("document", class_support, document_command, | |
2915 | "Document a user-defined command.\n\ | |
2916 | Give command name as argument. Give documentation on following lines.\n\ | |
2917 | End with a line of just \"end\"."); | |
2918 | add_com ("define", class_support, define_command, | |
2919 | "Define a new command name. Command name is argument.\n\ | |
2920 | Definition appears on following lines, one command per line.\n\ | |
2921 | End with a line of just \"end\".\n\ | |
2922 | Use the \"document\" command to give documentation for the new command.\n\ | |
2923 | Commands defined in this way do not take arguments."); | |
2924 | ||
2925 | #ifdef __STDC__ | |
df0f0dcc | 2926 | c = add_cmd ("source", class_support, source_command, |
bd5635a1 RP |
2927 | "Read commands from a file named FILE.\n\ |
2928 | Note that the file \"" GDBINIT_FILENAME "\" is read automatically in this way\n\ | |
df0f0dcc | 2929 | when gdb is started.", &cmdlist); |
bd5635a1 RP |
2930 | #else |
2931 | /* Punt file name, we can't help it easily. */ | |
df0f0dcc | 2932 | c = add_cmd ("source", class_support, source_command, |
bd5635a1 RP |
2933 | "Read commands from a file named FILE.\n\ |
2934 | Note that the file \".gdbinit\" is read automatically in this way\n\ | |
df0f0dcc | 2935 | when gdb is started.", &cmdlist); |
bd5635a1 | 2936 | #endif |
df0f0dcc | 2937 | c->completer = filename_completer; |
bd5635a1 RP |
2938 | |
2939 | add_com ("quit", class_support, quit_command, "Exit gdb."); | |
2940 | add_com ("help", class_support, help_command, "Print list of commands."); | |
2941 | add_com_alias ("q", "quit", class_support, 1); | |
2942 | add_com_alias ("h", "help", class_support, 1); | |
2943 | ||
2944 | ||
2945 | c = add_set_cmd ("verbose", class_support, var_boolean, (char *)&info_verbose, | |
2946 | "Set ", | |
2947 | &setlist), | |
2948 | add_show_from_set (c, &showlist); | |
30875e1c | 2949 | c->function.sfunc = set_verbose; |
bd5635a1 RP |
2950 | set_verbose (NULL, 0, c); |
2951 | ||
bd5635a1 RP |
2952 | add_show_from_set |
2953 | (add_set_cmd ("editing", class_support, var_boolean, (char *)&command_editing_p, | |
ee0613d1 | 2954 | "Set editing of command lines as they are typed.\n\ |
bd5635a1 | 2955 | Use \"on\" to enable to enable the editing, and \"off\" to disable it.\n\ |
ee0613d1 JG |
2956 | Without an argument, command line editing is enabled. To edit, use\n\ |
2957 | EMACS-like or VI-like commands like control-P or ESC.", &setlist), | |
bd5635a1 RP |
2958 | &showlist); |
2959 | ||
2960 | add_prefix_cmd ("history", class_support, set_history, | |
2961 | "Generic command for setting command history parameters.", | |
2962 | &sethistlist, "set history ", 0, &setlist); | |
2963 | add_prefix_cmd ("history", class_support, show_history, | |
2964 | "Generic command for showing command history parameters.", | |
2965 | &showhistlist, "show history ", 0, &showlist); | |
2966 | ||
2967 | add_show_from_set | |
2968 | (add_set_cmd ("expansion", no_class, var_boolean, (char *)&history_expansion_p, | |
2969 | "Set history expansion on command input.\n\ | |
2970 | Without an argument, history expansion is enabled.", &sethistlist), | |
2971 | &showhistlist); | |
2972 | ||
2973 | add_show_from_set | |
f266e564 | 2974 | (add_set_cmd ("save", no_class, var_boolean, (char *)&write_history_p, |
bd5635a1 RP |
2975 | "Set saving of the history record on exit.\n\ |
2976 | Use \"on\" to enable to enable the saving, and \"off\" to disable it.\n\ | |
2977 | Without an argument, saving is enabled.", &sethistlist), | |
2978 | &showhistlist); | |
2979 | ||
6fe90fc8 | 2980 | c = add_set_cmd ("size", no_class, var_integer, (char *)&history_size, |
bd5635a1 RP |
2981 | "Set the size of the command history, \n\ |
2982 | ie. the number of previous commands to keep a record of.", &sethistlist); | |
2983 | add_show_from_set (c, &showhistlist); | |
30875e1c | 2984 | c->function.sfunc = set_history_size_command; |
bd5635a1 RP |
2985 | |
2986 | add_show_from_set | |
2987 | (add_set_cmd ("filename", no_class, var_filename, (char *)&history_filename, | |
2988 | "Set the filename in which to record the command history\n\ | |
2989 | (the list of previous commands of which a record is kept).", &sethistlist), | |
2990 | &showhistlist); | |
2991 | ||
2992 | add_show_from_set | |
f266e564 | 2993 | (add_set_cmd ("confirm", class_support, var_boolean, |
bd5635a1 | 2994 | (char *)&caution, |
f266e564 JK |
2995 | "Set whether to confirm potentially dangerous operations.", |
2996 | &setlist), | |
bd5635a1 RP |
2997 | &showlist); |
2998 | ||
2999 | add_prefix_cmd ("info", class_info, info_command, | |
ee0613d1 | 3000 | "Generic command for showing things about the program being debugged.", |
bd5635a1 RP |
3001 | &infolist, "info ", 0, &cmdlist); |
3002 | add_com_alias ("i", "info", class_info, 1); | |
3003 | ||
09973223 JK |
3004 | add_com ("complete", class_obscure, complete_command, |
3005 | "List the completions for the rest of the line as a command."); | |
3006 | ||
bd5635a1 | 3007 | add_prefix_cmd ("show", class_info, show_command, |
ee0613d1 | 3008 | "Generic command for showing things about the debugger.", |
bd5635a1 RP |
3009 | &showlist, "show ", 0, &cmdlist); |
3010 | /* Another way to get at the same thing. */ | |
3011 | add_info ("set", show_command, "Show all GDB settings."); | |
3012 | ||
ee0613d1 JG |
3013 | add_cmd ("commands", no_class, show_commands, |
3014 | "Show the the history of commands you typed.\n\ | |
3015 | You can supply a command number to start with, or a `+' to start after\n\ | |
3016 | the previous command number shown.", | |
f266e564 | 3017 | &showlist); |
bd5635a1 | 3018 | |
f266e564 | 3019 | add_cmd ("version", no_class, show_version, |
ee0613d1 | 3020 | "Show what version of GDB this is.", &showlist); |
d0d8484a | 3021 | |
199b2450 TL |
3022 | /* If target is open when baud changes, it doesn't take effect until the |
3023 | next open (I think, not sure). */ | |
3024 | add_show_from_set (add_set_cmd ("remotebaud", no_class, | |
3025 | var_zinteger, (char *)&baud_rate, | |
3026 | "Set baud rate for remote serial I/O.\n\ | |
3027 | This value is used to set the speed of the serial port when debugging\n\ | |
3028 | using remote targets.", &setlist), | |
3029 | &showlist); | |
3030 | ||
d0d8484a | 3031 | add_show_from_set ( |
d6bbac39 | 3032 | add_set_cmd ("remotedebug", no_class, var_zinteger, (char *)&remote_debug, |
d0d8484a SG |
3033 | "Set debugging of remote protocol.\n\ |
3034 | When enabled, each packet sent or received with the remote target\n\ | |
3035 | is displayed.", &setlist), | |
3036 | &showlist); | |
bd5635a1 | 3037 | } |