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 | 58 | |
30875e1c SG |
59 | /* Prototypes for local functions */ |
60 | ||
61 | static char * | |
62 | symbol_completion_function PARAMS ((char *, int)); | |
63 | ||
64 | static void | |
65 | command_loop PARAMS ((void)); | |
66 | ||
67 | static void | |
68 | command_loop_marker PARAMS ((int)); | |
69 | ||
70 | static void | |
199b2450 | 71 | print_gdb_version PARAMS ((GDB_FILE *)); |
30875e1c SG |
72 | |
73 | static void | |
74 | quit_command PARAMS ((char *, int)); | |
75 | ||
76 | static void | |
fc61e9ee | 77 | init_main PARAMS ((void)); |
30875e1c SG |
78 | |
79 | static void | |
fc61e9ee | 80 | init_history PARAMS ((void)); |
30875e1c SG |
81 | |
82 | static void | |
fc61e9ee | 83 | init_cmd_lists PARAMS ((void)); |
30875e1c SG |
84 | |
85 | static void | |
86 | float_handler PARAMS ((int)); | |
87 | ||
88 | static void | |
89 | source_command PARAMS ((char *, int)); | |
90 | ||
c307bb11 | 91 | static void cd_command PARAMS ((char *, int)); |
30875e1c SG |
92 | |
93 | static void | |
94 | print_gnu_advertisement PARAMS ((void)); | |
95 | ||
96 | static void | |
97 | init_signals PARAMS ((void)); | |
98 | ||
99 | static void | |
100 | read_command_file PARAMS ((FILE *)); | |
101 | ||
102 | static void | |
103 | set_verbose PARAMS ((char *, int, struct cmd_list_element *)); | |
104 | ||
105 | static void | |
106 | show_history PARAMS ((char *, int)); | |
107 | ||
108 | static void | |
109 | set_history PARAMS ((char *, int)); | |
110 | ||
111 | static void | |
112 | set_history_size_command PARAMS ((char *, int, struct cmd_list_element *)); | |
113 | ||
114 | static void | |
115 | show_commands PARAMS ((char *, int)); | |
116 | ||
30875e1c SG |
117 | static void |
118 | echo_command PARAMS ((char *, int)); | |
119 | ||
120 | static void | |
121 | pwd_command PARAMS ((char *, int)); | |
122 | ||
123 | static void | |
124 | show_version PARAMS ((char *, int)); | |
125 | ||
126 | static void | |
127 | document_command PARAMS ((char *, int)); | |
128 | ||
129 | static void | |
130 | define_command PARAMS ((char *, int)); | |
131 | ||
132 | static void | |
133 | validate_comname PARAMS ((char *)); | |
134 | ||
135 | static void | |
136 | help_command PARAMS ((char *, int)); | |
137 | ||
138 | static void | |
139 | show_command PARAMS ((char *, int)); | |
140 | ||
141 | static void | |
142 | info_command PARAMS ((char *, int)); | |
143 | ||
09973223 JK |
144 | static void |
145 | complete_command PARAMS ((char *, int)); | |
146 | ||
30875e1c SG |
147 | static void |
148 | do_nothing PARAMS ((int)); | |
149 | ||
597dc86b SG |
150 | static int |
151 | quit_cover PARAMS ((char *)); | |
152 | ||
30875e1c SG |
153 | static void |
154 | disconnect PARAMS ((int)); | |
155 | ||
156 | static void | |
157 | source_cleanup PARAMS ((FILE *)); | |
bd5635a1 RP |
158 | |
159 | /* If this definition isn't overridden by the header files, assume | |
160 | that isatty and fileno exist on this system. */ | |
161 | #ifndef ISATTY | |
162 | #define ISATTY(FP) (isatty (fileno (FP))) | |
163 | #endif | |
164 | ||
165 | /* Initialization file name for gdb. This is overridden in some configs. */ | |
166 | ||
167 | #ifndef GDBINIT_FILENAME | |
168 | #define GDBINIT_FILENAME ".gdbinit" | |
169 | #endif | |
6fe90fc8 JK |
170 | static char gdbinit[] = GDBINIT_FILENAME; |
171 | static int inhibit_gdbinit = 0; | |
bd5635a1 | 172 | |
f266e564 JK |
173 | #define ALL_CLEANUPS ((struct cleanup *)0) |
174 | ||
bd5635a1 RP |
175 | /* Version number of GDB, as a string. */ |
176 | ||
177 | extern char *version; | |
178 | ||
57cb418a RP |
179 | /* Canonical host name as a string. */ |
180 | ||
a28d16d3 | 181 | extern char *host_name; |
57cb418a RP |
182 | |
183 | /* Canonical target name as a string. */ | |
184 | ||
a28d16d3 | 185 | extern char *target_name; |
57cb418a | 186 | |
bd099407 JG |
187 | extern char lang_frame_mismatch_warn[]; /* language.c */ |
188 | ||
bd5635a1 RP |
189 | /* Flag for whether we want all the "from_tty" gubbish printed. */ |
190 | ||
191 | int caution = 1; /* Default is yes, sigh. */ | |
192 | ||
193 | /* | |
194 | * Define all cmd_list_element's | |
195 | */ | |
196 | ||
197 | /* Chain containing all defined commands. */ | |
198 | ||
199 | struct cmd_list_element *cmdlist; | |
200 | ||
201 | /* Chain containing all defined info subcommands. */ | |
202 | ||
203 | struct cmd_list_element *infolist; | |
204 | ||
205 | /* Chain containing all defined enable subcommands. */ | |
206 | ||
207 | struct cmd_list_element *enablelist; | |
208 | ||
209 | /* Chain containing all defined disable subcommands. */ | |
210 | ||
211 | struct cmd_list_element *disablelist; | |
212 | ||
213 | /* Chain containing all defined delete subcommands. */ | |
214 | ||
215 | struct cmd_list_element *deletelist; | |
216 | ||
217 | /* Chain containing all defined "enable breakpoint" subcommands. */ | |
218 | ||
219 | struct cmd_list_element *enablebreaklist; | |
220 | ||
221 | /* Chain containing all defined set subcommands */ | |
222 | ||
223 | struct cmd_list_element *setlist; | |
224 | ||
0239d9b3 FF |
225 | /* Chain containing all defined unset subcommands */ |
226 | ||
227 | struct cmd_list_element *unsetlist; | |
228 | ||
bd5635a1 | 229 | /* Chain containing all defined show subcommands. */ |
0239d9b3 | 230 | |
bd5635a1 RP |
231 | struct cmd_list_element *showlist; |
232 | ||
233 | /* Chain containing all defined \"set history\". */ | |
234 | ||
235 | struct cmd_list_element *sethistlist; | |
236 | ||
237 | /* Chain containing all defined \"show history\". */ | |
0239d9b3 | 238 | |
bd5635a1 RP |
239 | struct cmd_list_element *showhistlist; |
240 | ||
241 | /* Chain containing all defined \"unset history\". */ | |
242 | ||
243 | struct cmd_list_element *unsethistlist; | |
244 | ||
0239d9b3 FF |
245 | /* Chain containing all defined maintenance subcommands. */ |
246 | ||
247 | #if MAINTENANCE_CMDS | |
248 | struct cmd_list_element *maintenancelist; | |
249 | #endif | |
250 | ||
251 | /* Chain containing all defined "maintenance info" subcommands. */ | |
252 | ||
253 | #if MAINTENANCE_CMDS | |
254 | struct cmd_list_element *maintenanceinfolist; | |
255 | #endif | |
256 | ||
a8e033f2 SG |
257 | /* Chain containing all defined "maintenance print" subcommands. */ |
258 | ||
259 | #if MAINTENANCE_CMDS | |
260 | struct cmd_list_element *maintenanceprintlist; | |
261 | #endif | |
262 | ||
0239d9b3 FF |
263 | struct cmd_list_element *setprintlist; |
264 | ||
265 | struct cmd_list_element *showprintlist; | |
266 | ||
267 | struct cmd_list_element *setchecklist; | |
268 | ||
269 | struct cmd_list_element *showchecklist; | |
270 | ||
d0d8484a SG |
271 | /* stdio stream that command input is being read from. Set to stdin normally. |
272 | Set by source_command to the file we are sourcing. Set to NULL if we are | |
273 | executing a user-defined command. */ | |
bd5635a1 RP |
274 | |
275 | FILE *instream; | |
276 | ||
277 | /* Current working directory. */ | |
278 | ||
279 | char *current_directory; | |
280 | ||
281 | /* The directory name is actually stored here (usually). */ | |
f7402c04 | 282 | static char dirbuf[1024]; |
bd5635a1 RP |
283 | |
284 | /* Function to call before reading a command, if nonzero. | |
285 | The function receives two args: an input stream, | |
286 | and a prompt string. */ | |
bd099407 | 287 | |
30875e1c | 288 | void (*window_hook) PARAMS ((FILE *, char *)); |
bd5635a1 | 289 | |
318bf84f FF |
290 | extern int mapped_symbol_files; |
291 | extern int readnow_symbol_files; | |
292 | ||
bd5635a1 RP |
293 | int epoch_interface; |
294 | int xgdb_verbose; | |
295 | ||
bd5635a1 RP |
296 | /* gdb prints this when reading a command interactively */ |
297 | static char *prompt; | |
298 | ||
299 | /* Buffer used for reading command lines, and the size | |
300 | allocated for it so far. */ | |
301 | ||
302 | char *line; | |
303 | int linesize = 100; | |
304 | ||
6c803036 JK |
305 | /* Nonzero if the current command is modified by "server ". This |
306 | affects things like recording into the command history, comamnds | |
307 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, | |
308 | whatever) can issue its own commands and also send along commands | |
309 | from the user, and have the user not notice that the user interface | |
310 | is issuing commands too. */ | |
311 | int server_command; | |
312 | ||
bd5635a1 | 313 | /* Baud rate specified for talking to serial target systems. Default |
d0d8484a | 314 | is left as -1, so targets can choose their own defaults. */ |
9c41f6a6 JK |
315 | /* FIXME: This means that "show remotebaud" and gr_files_info can print -1 |
316 | or (unsigned int)-1. This is a Bad User Interface. */ | |
bd5635a1 | 317 | |
d0d8484a SG |
318 | int baud_rate = -1; |
319 | ||
320 | /* Non-zero tells remote* modules to output debugging info. */ | |
321 | ||
322 | int remote_debug = 0; | |
bd5635a1 RP |
323 | |
324 | /* Signal to catch ^Z typed while reading a command: SIGTSTP or SIGCONT. */ | |
325 | ||
326 | #ifndef STOP_SIGNAL | |
327 | #ifdef SIGTSTP | |
328 | #define STOP_SIGNAL SIGTSTP | |
30875e1c | 329 | static void stop_sig PARAMS ((int)); |
bd5635a1 RP |
330 | #endif |
331 | #endif | |
d566d62a JK |
332 | |
333 | /* Some System V have job control but not sigsetmask(). */ | |
334 | #if !defined (HAVE_SIGSETMASK) | |
36464897 JK |
335 | #if !defined (USG) |
336 | #define HAVE_SIGSETMASK 1 | |
337 | #else | |
338 | #define HAVE_SIGSETMASK 0 | |
339 | #endif | |
d566d62a JK |
340 | #endif |
341 | ||
8b3c897a | 342 | #if 0 == (HAVE_SIGSETMASK) |
d566d62a JK |
343 | #define sigsetmask(n) |
344 | #endif | |
bd5635a1 | 345 | \f |
9748446f JK |
346 | /* Where to go for return_to_top_level (RETURN_ERROR). */ |
347 | static jmp_buf error_return; | |
348 | /* Where to go for return_to_top_level (RETURN_QUIT). */ | |
349 | static jmp_buf quit_return; | |
bd5635a1 | 350 | |
9748446f JK |
351 | /* Temporary variable for SET_TOP_LEVEL. */ |
352 | static int top_level_val; | |
353 | ||
354 | /* Do a setjmp on error_return and quit_return. catch_errors is | |
355 | generally a cleaner way to do this, but main() would look pretty | |
356 | ugly if it had to use catch_errors each time. */ | |
357 | ||
358 | #define SET_TOP_LEVEL() \ | |
359 | (((top_level_val = setjmp (error_return)) \ | |
360 | ? (PTR) 0 : (PTR) memcpy (quit_return, error_return, sizeof (jmp_buf))) \ | |
361 | , top_level_val) | |
362 | ||
363 | /* Return for reason REASON. This generally gets back to the command | |
364 | loop, but can be caught via catch_errors. */ | |
bd5635a1 | 365 | |
30875e1c | 366 | NORETURN void |
9748446f JK |
367 | return_to_top_level (reason) |
368 | enum return_reason reason; | |
bd5635a1 RP |
369 | { |
370 | quit_flag = 0; | |
371 | immediate_quit = 0; | |
c307bb11 JK |
372 | |
373 | /* Perhaps it would be cleaner to do this via the cleanup chain (not sure | |
374 | I can think of a reason why that is vital, though). */ | |
bd5635a1 | 375 | bpstat_clear_actions(stop_bpstat); /* Clear queued breakpoint commands */ |
c307bb11 | 376 | |
bd5635a1 | 377 | disable_current_display (); |
f266e564 | 378 | do_cleanups (ALL_CLEANUPS); |
a6b26c44 SS |
379 | |
380 | if (annotation_level > 1) | |
381 | switch (reason) | |
382 | { | |
383 | case RETURN_QUIT: | |
1c95d7ab | 384 | annotate_quit (); |
a6b26c44 SS |
385 | break; |
386 | case RETURN_ERROR: | |
1c95d7ab | 387 | annotate_error (); |
a6b26c44 SS |
388 | break; |
389 | } | |
390 | ||
9748446f JK |
391 | (NORETURN void) longjmp |
392 | (reason == RETURN_ERROR ? error_return : quit_return, 1); | |
bd5635a1 RP |
393 | } |
394 | ||
9748446f JK |
395 | /* Call FUNC with arg ARGS, catching any errors. If there is no |
396 | error, return the value returned by FUNC. If there is an error, | |
397 | print ERRSTRING, print the specific error message, then return | |
398 | zero. | |
399 | ||
d0d8484a SG |
400 | Must not be called with immediate_quit in effect (bad things might |
401 | happen, say we got a signal in the middle of a memcpy to quit_return). | |
402 | This is an OK restriction; with very few exceptions immediate_quit can | |
403 | be replaced by judicious use of QUIT. | |
404 | ||
9748446f JK |
405 | MASK specifies what to catch; it is normally set to |
406 | RETURN_MASK_ALL, if for no other reason than that the code which | |
407 | calls catch_errors might not be set up to deal with a quit which | |
408 | isn't caught. But if the code can deal with it, it generally | |
409 | should be RETURN_MASK_ERROR, unless for some reason it is more | |
410 | useful to abort only the portion of the operation inside the | |
411 | catch_errors. Note that quit should return to the command line | |
412 | fairly quickly, even if some further processing is being done. */ | |
bd5635a1 RP |
413 | |
414 | int | |
9748446f | 415 | catch_errors (func, args, errstring, mask) |
30875e1c | 416 | int (*func) PARAMS ((char *)); |
9748446f | 417 | PTR args; |
bd5635a1 | 418 | char *errstring; |
9748446f | 419 | return_mask mask; |
bd5635a1 | 420 | { |
9748446f JK |
421 | jmp_buf saved_error; |
422 | jmp_buf saved_quit; | |
423 | jmp_buf tmp_jmp; | |
bd5635a1 RP |
424 | int val; |
425 | struct cleanup *saved_cleanup_chain; | |
81066208 | 426 | char *saved_error_pre_print; |
bd5635a1 RP |
427 | |
428 | saved_cleanup_chain = save_cleanups (); | |
81066208 | 429 | saved_error_pre_print = error_pre_print; |
bd5635a1 | 430 | |
9748446f JK |
431 | if (mask & RETURN_MASK_ERROR) |
432 | memcpy ((char *)saved_error, (char *)error_return, sizeof (jmp_buf)); | |
433 | if (mask & RETURN_MASK_QUIT) | |
434 | memcpy (saved_quit, quit_return, sizeof (jmp_buf)); | |
81066208 | 435 | error_pre_print = errstring; |
bd5635a1 | 436 | |
9748446f JK |
437 | if (setjmp (tmp_jmp) == 0) |
438 | { | |
439 | if (mask & RETURN_MASK_ERROR) | |
440 | memcpy (error_return, tmp_jmp, sizeof (jmp_buf)); | |
441 | if (mask & RETURN_MASK_QUIT) | |
442 | memcpy (quit_return, tmp_jmp, sizeof (jmp_buf)); | |
443 | val = (*func) (args); | |
444 | } | |
bd5635a1 | 445 | else |
81066208 | 446 | val = 0; |
bd5635a1 RP |
447 | |
448 | restore_cleanups (saved_cleanup_chain); | |
449 | ||
81066208 | 450 | error_pre_print = saved_error_pre_print; |
9748446f JK |
451 | if (mask & RETURN_MASK_ERROR) |
452 | memcpy (error_return, saved_error, sizeof (jmp_buf)); | |
453 | if (mask & RETURN_MASK_QUIT) | |
454 | memcpy (quit_return, saved_quit, sizeof (jmp_buf)); | |
bd5635a1 RP |
455 | return val; |
456 | } | |
457 | ||
458 | /* Handler for SIGHUP. */ | |
459 | ||
460 | static void | |
30875e1c SG |
461 | disconnect (signo) |
462 | int signo; | |
bd5635a1 | 463 | { |
6fe90fc8 | 464 | catch_errors (quit_cover, NULL, |
9748446f | 465 | "Could not kill the program being debugged", RETURN_MASK_ALL); |
597dc86b | 466 | signal (SIGHUP, SIG_DFL); |
bd5635a1 RP |
467 | kill (getpid (), SIGHUP); |
468 | } | |
597dc86b SG |
469 | |
470 | /* Just a little helper function for disconnect(). */ | |
471 | ||
472 | static int | |
473 | quit_cover (s) | |
474 | char *s; | |
475 | { | |
476 | caution = 0; /* Throw caution to the wind -- we're exiting. | |
477 | This prevents asking the user dumb questions. */ | |
478 | quit_command((char *)0, 0); | |
479 | return 0; | |
480 | } | |
bd5635a1 | 481 | \f |
d6bbac39 JK |
482 | /* Line number we are currently in in a file which is being sourced. */ |
483 | static int source_line_number; | |
484 | ||
485 | /* Name of the file we are sourcing. */ | |
486 | static char *source_file_name; | |
487 | ||
488 | /* Buffer containing the error_pre_print used by the source stuff. | |
489 | Malloc'd. */ | |
490 | static char *source_error; | |
491 | static int source_error_allocated; | |
492 | ||
493 | /* Something to glom on to the start of error_pre_print if source_file_name | |
494 | is set. */ | |
495 | static char *source_pre_error; | |
496 | ||
bd5635a1 RP |
497 | /* Clean up on error during a "source" command (or execution of a |
498 | user-defined command). */ | |
499 | ||
500 | static void | |
501 | source_cleanup (stream) | |
502 | FILE *stream; | |
503 | { | |
504 | /* Restore the previous input stream. */ | |
505 | instream = stream; | |
506 | } | |
507 | ||
508 | /* Read commands from STREAM. */ | |
509 | static void | |
510 | read_command_file (stream) | |
511 | FILE *stream; | |
512 | { | |
513 | struct cleanup *cleanups; | |
514 | ||
515 | cleanups = make_cleanup (source_cleanup, instream); | |
516 | instream = stream; | |
517 | command_loop (); | |
518 | do_cleanups (cleanups); | |
519 | } | |
520 | \f | |
d8fc8773 JK |
521 | void |
522 | gdb_init () | |
523 | { | |
524 | /* Run the init function of each source file */ | |
525 | ||
526 | init_cmd_lists (); /* This needs to be done first */ | |
527 | initialize_all_files (); | |
528 | init_main (); /* But that omits this file! Do it now */ | |
529 | init_signals (); | |
530 | ||
531 | /* We need a default language for parsing expressions, so simple things like | |
532 | "set width 0" won't fail if no language is explicitly set in a config file | |
533 | or implicitly set by reading an executable during startup. */ | |
534 | set_language (language_c); | |
535 | expected_language = current_language; /* don't warn about the change. */ | |
536 | } | |
537 | ||
538 | #ifndef MAIN_OVERRIDE | |
bd5635a1 RP |
539 | int |
540 | main (argc, argv) | |
541 | int argc; | |
542 | char **argv; | |
543 | { | |
544 | int count; | |
bd5635a1 RP |
545 | static int quiet = 0; |
546 | static int batch = 0; | |
547 | ||
548 | /* Pointers to various arguments from command line. */ | |
549 | char *symarg = NULL; | |
550 | char *execarg = NULL; | |
551 | char *corearg = NULL; | |
552 | char *cdarg = NULL; | |
553 | char *ttyarg = NULL; | |
554 | ||
c307bb11 JK |
555 | /* These are static so that we can take their address in an initializer. */ |
556 | static int print_help; | |
557 | static int print_version; | |
558 | ||
559 | /* Pointers to all arguments of --command option. */ | |
bd5635a1 RP |
560 | char **cmdarg; |
561 | /* Allocated size of cmdarg. */ | |
562 | int cmdsize; | |
563 | /* Number of elements of cmdarg used. */ | |
564 | int ncmd; | |
565 | ||
c307bb11 | 566 | /* Indices of all arguments of --directory option. */ |
bd5635a1 RP |
567 | char **dirarg; |
568 | /* Allocated size. */ | |
569 | int dirsize; | |
570 | /* Number of elements used. */ | |
571 | int ndir; | |
572 | ||
3a16d640 JG |
573 | struct stat homebuf, cwdbuf; |
574 | char *homedir, *homeinit; | |
575 | ||
bd5635a1 RP |
576 | register int i; |
577 | ||
a6b26c44 SS |
578 | /* start-sanitize-mpw */ |
579 | #ifdef MPW | |
580 | /* Drop into MacsBug, but only if the executable is specially named. */ | |
581 | if (strcmp(argv[0], "DEBUGGDB") == 0) | |
582 | DebugStr("\pat start of GDB main"); | |
583 | ||
584 | if (StandAlone) | |
585 | mac_app = mac_init (); | |
586 | #endif /* MPW */ | |
587 | /* end-sanitize-mpw */ | |
bd5635a1 | 588 | /* This needs to happen before the first use of malloc. */ |
318bf84f | 589 | init_malloc ((PTR) NULL); |
bd5635a1 RP |
590 | |
591 | #if defined (ALIGN_STACK_ON_STARTUP) | |
592 | i = (int) &count & 0x3; | |
593 | if (i != 0) | |
594 | alloca (4 - i); | |
595 | #endif | |
596 | ||
bd099407 | 597 | /* If error() is called from initialization code, just exit */ |
9748446f | 598 | if (SET_TOP_LEVEL ()) { |
bd099407 JG |
599 | exit(1); |
600 | } | |
601 | ||
bd5635a1 RP |
602 | cmdsize = 1; |
603 | cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg)); | |
604 | ncmd = 0; | |
605 | dirsize = 1; | |
606 | dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg)); | |
607 | ndir = 0; | |
608 | ||
609 | quit_flag = 0; | |
610 | line = (char *) xmalloc (linesize); | |
611 | line[0] = '\0'; /* Terminate saved (now empty) cmd line */ | |
612 | instream = stdin; | |
613 | ||
f7402c04 | 614 | getcwd (dirbuf, sizeof (dirbuf)); |
bd5635a1 RP |
615 | current_directory = dirbuf; |
616 | ||
bd5635a1 RP |
617 | /* Parse arguments and options. */ |
618 | { | |
619 | int c; | |
bd5635a1 RP |
620 | /* When var field is 0, use flag field to record the equivalent |
621 | short option (or arbitrary numbers starting at 10 for those | |
622 | with no equivalent). */ | |
623 | static struct option long_options[] = | |
624 | { | |
318bf84f FF |
625 | {"readnow", no_argument, &readnow_symbol_files, 1}, |
626 | {"r", no_argument, &readnow_symbol_files, 1}, | |
627 | {"mapped", no_argument, &mapped_symbol_files, 1}, | |
628 | {"m", no_argument, &mapped_symbol_files, 1}, | |
ee0613d1 JG |
629 | {"quiet", no_argument, &quiet, 1}, |
630 | {"q", no_argument, &quiet, 1}, | |
fb29d681 | 631 | {"silent", no_argument, &quiet, 1}, |
ee0613d1 JG |
632 | {"nx", no_argument, &inhibit_gdbinit, 1}, |
633 | {"n", no_argument, &inhibit_gdbinit, 1}, | |
634 | {"batch", no_argument, &batch, 1}, | |
635 | {"epoch", no_argument, &epoch_interface, 1}, | |
6c803036 JK |
636 | |
637 | /* This is a synonym for "--annotate=1". --annotate is now preferred, | |
638 | but keep this here for a long time because people will be running | |
639 | emacses which use --fullname. */ | |
640 | {"fullname", no_argument, 0, 'f'}, | |
641 | {"f", no_argument, 0, 'f'}, | |
642 | ||
643 | {"annotate", required_argument, 0, 12}, | |
ee0613d1 JG |
644 | {"help", no_argument, &print_help, 1}, |
645 | {"se", required_argument, 0, 10}, | |
646 | {"symbols", required_argument, 0, 's'}, | |
647 | {"s", required_argument, 0, 's'}, | |
648 | {"exec", required_argument, 0, 'e'}, | |
649 | {"e", required_argument, 0, 'e'}, | |
650 | {"core", required_argument, 0, 'c'}, | |
651 | {"c", required_argument, 0, 'c'}, | |
652 | {"command", required_argument, 0, 'x'}, | |
c307bb11 | 653 | {"version", no_argument, &print_version, 1}, |
ee0613d1 JG |
654 | {"x", required_argument, 0, 'x'}, |
655 | {"directory", required_argument, 0, 'd'}, | |
656 | {"cd", required_argument, 0, 11}, | |
657 | {"tty", required_argument, 0, 't'}, | |
658 | {"baud", required_argument, 0, 'b'}, | |
659 | {"b", required_argument, 0, 'b'}, | |
bd5635a1 RP |
660 | /* Allow machine descriptions to add more options... */ |
661 | #ifdef ADDITIONAL_OPTIONS | |
662 | ADDITIONAL_OPTIONS | |
663 | #endif | |
ee0613d1 | 664 | {0, no_argument, 0, 0}, |
bd5635a1 RP |
665 | }; |
666 | ||
667 | while (1) | |
668 | { | |
ee0613d1 JG |
669 | int option_index; |
670 | ||
bd5635a1 RP |
671 | c = getopt_long_only (argc, argv, "", |
672 | long_options, &option_index); | |
673 | if (c == EOF) | |
674 | break; | |
675 | ||
676 | /* Long option that takes an argument. */ | |
677 | if (c == 0 && long_options[option_index].flag == 0) | |
678 | c = long_options[option_index].val; | |
679 | ||
680 | switch (c) | |
681 | { | |
682 | case 0: | |
683 | /* Long option that just sets a flag. */ | |
684 | break; | |
685 | case 10: | |
686 | symarg = optarg; | |
687 | execarg = optarg; | |
688 | break; | |
689 | case 11: | |
690 | cdarg = optarg; | |
691 | break; | |
6c803036 JK |
692 | case 12: |
693 | /* FIXME: what if the syntax is wrong (e.g. not digits)? */ | |
694 | annotation_level = atoi (optarg); | |
695 | break; | |
696 | case 'f': | |
697 | annotation_level = 1; | |
698 | break; | |
bd5635a1 RP |
699 | case 's': |
700 | symarg = optarg; | |
701 | break; | |
702 | case 'e': | |
703 | execarg = optarg; | |
704 | break; | |
705 | case 'c': | |
706 | corearg = optarg; | |
707 | break; | |
708 | case 'x': | |
709 | cmdarg[ncmd++] = optarg; | |
710 | if (ncmd >= cmdsize) | |
711 | { | |
712 | cmdsize *= 2; | |
713 | cmdarg = (char **) xrealloc ((char *)cmdarg, | |
714 | cmdsize * sizeof (*cmdarg)); | |
715 | } | |
716 | break; | |
717 | case 'd': | |
718 | dirarg[ndir++] = optarg; | |
719 | if (ndir >= dirsize) | |
720 | { | |
721 | dirsize *= 2; | |
722 | dirarg = (char **) xrealloc ((char *)dirarg, | |
723 | dirsize * sizeof (*dirarg)); | |
724 | } | |
725 | break; | |
726 | case 't': | |
727 | ttyarg = optarg; | |
728 | break; | |
729 | case 'q': | |
730 | quiet = 1; | |
731 | break; | |
732 | case 'b': | |
d0d8484a SG |
733 | { |
734 | int i; | |
735 | char *p; | |
736 | ||
737 | i = strtol (optarg, &p, 0); | |
738 | if (i == 0 && p == optarg) | |
8e4c7b3e JK |
739 | |
740 | /* Don't use *_filtered or warning() (which relies on | |
741 | current_target) until after initialize_all_files(). */ | |
742 | ||
743 | fprintf_unfiltered | |
744 | (gdb_stderr, | |
745 | "warning: could not set baud rate to `%s'.\n", optarg); | |
d0d8484a SG |
746 | else |
747 | baud_rate = i; | |
748 | } | |
bd5635a1 | 749 | break; |
d0d8484a | 750 | |
bd5635a1 RP |
751 | #ifdef ADDITIONAL_OPTION_CASES |
752 | ADDITIONAL_OPTION_CASES | |
753 | #endif | |
754 | case '?': | |
199b2450 | 755 | fprintf_unfiltered (gdb_stderr, |
fb29d681 | 756 | "Use `%s --help' for a complete list of options.\n", |
bd5635a1 RP |
757 | argv[0]); |
758 | exit (1); | |
759 | } | |
bd5635a1 | 760 | } |
fb29d681 | 761 | |
bd5635a1 RP |
762 | /* OK, that's all the options. The other arguments are filenames. */ |
763 | count = 0; | |
764 | for (; optind < argc; optind++) | |
765 | switch (++count) | |
766 | { | |
767 | case 1: | |
768 | symarg = argv[optind]; | |
769 | execarg = argv[optind]; | |
770 | break; | |
771 | case 2: | |
772 | corearg = argv[optind]; | |
773 | break; | |
774 | case 3: | |
199b2450 | 775 | fprintf_unfiltered (gdb_stderr, |
bd5635a1 RP |
776 | "Excess command line arguments ignored. (%s%s)\n", |
777 | argv[optind], (optind == argc - 1) ? "" : " ..."); | |
778 | break; | |
779 | } | |
780 | if (batch) | |
781 | quiet = 1; | |
782 | } | |
783 | ||
d8fc8773 | 784 | gdb_init (); |
bd5635a1 | 785 | |
c307bb11 JK |
786 | /* Do these (and anything which might call wrap_here or *_filtered) |
787 | after initialize_all_files. */ | |
788 | if (print_version) | |
789 | { | |
199b2450 | 790 | print_gdb_version (gdb_stdout); |
c307bb11 JK |
791 | wrap_here (""); |
792 | printf_filtered ("\n"); | |
793 | exit (0); | |
794 | } | |
795 | ||
796 | if (print_help) | |
797 | { | |
798 | /* --version is intentionally not documented here, because we | |
799 | are printing the version here, and the help is long enough | |
800 | already. */ | |
801 | ||
199b2450 | 802 | print_gdb_version (gdb_stdout); |
c307bb11 JK |
803 | /* Make sure the output gets printed. */ |
804 | wrap_here (""); | |
805 | printf_filtered ("\n"); | |
806 | ||
807 | /* But don't use *_filtered here. We don't want to prompt for continue | |
808 | no matter how small the screen or how much we're going to print. */ | |
a6b26c44 SS |
809 | /* start-sanitize-mpw */ |
810 | /* For reasons too ugly to describe... */ | |
811 | #ifdef MPW_C | |
812 | fputs_unfiltered ("This is the GNU debugger.\n", gdb_stdout); | |
813 | #else | |
814 | /* end-sanitize-mpw */ | |
199b2450 | 815 | fputs_unfiltered ("\ |
c307bb11 JK |
816 | This is the GNU debugger. Usage:\n\ |
817 | gdb [options] [executable-file [core-file or process-id]]\n\ | |
818 | Options:\n\ | |
819 | --help Print this message.\n\ | |
820 | --quiet Do not print version number on startup.\n\ | |
821 | --fullname Output information used by emacs-GDB interface.\n\ | |
822 | --epoch Output information used by epoch emacs-GDB interface.\n\ | |
823 | --batch Exit after processing options.\n\ | |
824 | --nx Do not read .gdbinit file.\n\ | |
825 | --tty=TTY Use TTY for input/output by the program being debugged.\n\ | |
826 | --cd=DIR Change current directory to DIR.\n\ | |
827 | --directory=DIR Search for source files in DIR.\n\ | |
828 | --command=FILE Execute GDB commands from FILE.\n\ | |
829 | --symbols=SYMFILE Read symbols from SYMFILE.\n\ | |
830 | --exec=EXECFILE Use EXECFILE as the executable.\n\ | |
831 | --se=FILE Use FILE as symbol file and executable file.\n\ | |
832 | --core=COREFILE Analyze the core dump COREFILE.\n\ | |
833 | -b BAUDRATE Set serial port baud rate used for remote debugging.\n\ | |
834 | --mapped Use mapped symbol files if supported on this system.\n\ | |
835 | --readnow Fully read symbol files on first access.\n\ | |
199b2450 | 836 | ", gdb_stdout); |
a6b26c44 SS |
837 | /* start-sanitize-mpw */ |
838 | #endif /* MPW_C */ | |
839 | /* end-sanitize-mpw */ | |
c307bb11 | 840 | #ifdef ADDITIONAL_OPTION_HELP |
199b2450 | 841 | fputs_unfiltered (ADDITIONAL_OPTION_HELP, gdb_stdout); |
c307bb11 | 842 | #endif |
199b2450 | 843 | fputs_unfiltered ("\n\ |
c307bb11 | 844 | For more information, type \"help\" from within GDB, or consult the\n\ |
199b2450 | 845 | GDB manual (available as on-line info or a printed manual).\n", gdb_stdout); |
c307bb11 JK |
846 | exit (0); |
847 | } | |
848 | ||
bd5635a1 RP |
849 | if (!quiet) |
850 | { | |
81066208 JG |
851 | /* Print all the junk at the top, with trailing "..." if we are about |
852 | to read a symbol file (possibly slowly). */ | |
853 | print_gnu_advertisement (); | |
199b2450 | 854 | print_gdb_version (gdb_stdout); |
81066208 JG |
855 | if (symarg) |
856 | printf_filtered (".."); | |
bd099407 | 857 | wrap_here(""); |
199b2450 | 858 | gdb_flush (gdb_stdout); /* Force to screen during slow operations */ |
bd5635a1 RP |
859 | } |
860 | ||
81066208 | 861 | error_pre_print = "\n\n"; |
51b57ded FF |
862 | /* We may get more than one warning, don't double space all of them... */ |
863 | warning_pre_print = "\nwarning: "; | |
81066208 | 864 | |
3a16d640 JG |
865 | /* Read and execute $HOME/.gdbinit file, if it exists. This is done |
866 | *before* all the command line arguments are processed; it sets | |
867 | global parameters, which are independent of what file you are | |
868 | debugging or what directory you are in. */ | |
869 | homedir = getenv ("HOME"); | |
870 | if (homedir) | |
871 | { | |
872 | homeinit = (char *) alloca (strlen (getenv ("HOME")) + | |
873 | strlen (gdbinit) + 10); | |
874 | strcpy (homeinit, getenv ("HOME")); | |
875 | strcat (homeinit, "/"); | |
876 | strcat (homeinit, gdbinit); | |
877 | if (!inhibit_gdbinit && access (homeinit, R_OK) == 0) | |
878 | { | |
9748446f | 879 | if (!SET_TOP_LEVEL ()) |
3a16d640 JG |
880 | source_command (homeinit, 0); |
881 | } | |
882 | do_cleanups (ALL_CLEANUPS); | |
883 | ||
884 | /* Do stats; no need to do them elsewhere since we'll only | |
885 | need them if homedir is set. Make sure that they are | |
886 | zero in case one of them fails (this guarantees that they | |
887 | won't match if either exists). */ | |
888 | ||
889 | memset (&homebuf, 0, sizeof (struct stat)); | |
890 | memset (&cwdbuf, 0, sizeof (struct stat)); | |
891 | ||
892 | stat (homeinit, &homebuf); | |
893 | stat (gdbinit, &cwdbuf); /* We'll only need this if | |
894 | homedir was set. */ | |
895 | } | |
896 | ||
bd5635a1 RP |
897 | /* Now perform all the actions indicated by the arguments. */ |
898 | if (cdarg != NULL) | |
899 | { | |
9748446f | 900 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
901 | { |
902 | cd_command (cdarg, 0); | |
bd5635a1 RP |
903 | } |
904 | } | |
f266e564 JK |
905 | do_cleanups (ALL_CLEANUPS); |
906 | ||
bd5635a1 | 907 | for (i = 0; i < ndir; i++) |
9748446f | 908 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 909 | directory_command (dirarg[i], 0); |
51b57ded | 910 | free ((PTR)dirarg); |
f266e564 JK |
911 | do_cleanups (ALL_CLEANUPS); |
912 | ||
bd5635a1 RP |
913 | if (execarg != NULL |
914 | && symarg != NULL | |
2e4964ad | 915 | && STREQ (execarg, symarg)) |
bd5635a1 RP |
916 | { |
917 | /* The exec file and the symbol-file are the same. If we can't open | |
918 | it, better only print one error message. */ | |
9748446f | 919 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
920 | { |
921 | exec_file_command (execarg, !batch); | |
81066208 | 922 | symbol_file_command (symarg, 0); |
bd5635a1 RP |
923 | } |
924 | } | |
925 | else | |
926 | { | |
927 | if (execarg != NULL) | |
9748446f | 928 | if (!SET_TOP_LEVEL ()) |
bd5635a1 RP |
929 | exec_file_command (execarg, !batch); |
930 | if (symarg != NULL) | |
9748446f | 931 | if (!SET_TOP_LEVEL ()) |
81066208 | 932 | symbol_file_command (symarg, 0); |
bd5635a1 | 933 | } |
f266e564 JK |
934 | do_cleanups (ALL_CLEANUPS); |
935 | ||
81066208 JG |
936 | /* After the symbol file has been read, print a newline to get us |
937 | beyond the copyright line... But errors should still set off | |
938 | the error message with a (single) blank line. */ | |
afe4ca15 JG |
939 | if (!quiet) |
940 | printf_filtered ("\n"); | |
81066208 | 941 | error_pre_print = "\n"; |
318bf84f | 942 | warning_pre_print = "\nwarning: "; |
81066208 | 943 | |
bd5635a1 | 944 | if (corearg != NULL) |
9748446f | 945 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 946 | core_file_command (corearg, !batch); |
9748446f | 947 | else if (isdigit (corearg[0]) && !SET_TOP_LEVEL ()) |
bd5635a1 | 948 | attach_command (corearg, !batch); |
f266e564 | 949 | do_cleanups (ALL_CLEANUPS); |
bd5635a1 RP |
950 | |
951 | if (ttyarg != NULL) | |
9748446f | 952 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 953 | tty_command (ttyarg, !batch); |
f266e564 | 954 | do_cleanups (ALL_CLEANUPS); |
bd5635a1 RP |
955 | |
956 | #ifdef ADDITIONAL_OPTION_HANDLER | |
957 | ADDITIONAL_OPTION_HANDLER; | |
958 | #endif | |
959 | ||
81066208 JG |
960 | /* Error messages should no longer be distinguished with extra output. */ |
961 | error_pre_print = 0; | |
318bf84f | 962 | warning_pre_print = "warning: "; |
81066208 | 963 | |
3a16d640 JG |
964 | /* Read the .gdbinit file in the current directory, *if* it isn't |
965 | the same as the $HOME/.gdbinit file (it should exist, also). */ | |
966 | ||
967 | if (!homedir | |
968 | || memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat))) | |
969 | if (!inhibit_gdbinit && access (gdbinit, R_OK) == 0) | |
bd5635a1 | 970 | { |
9748446f | 971 | if (!SET_TOP_LEVEL ()) |
d75710b0 | 972 | source_command (gdbinit, 0); |
bd5635a1 | 973 | } |
d75710b0 FF |
974 | do_cleanups (ALL_CLEANUPS); |
975 | ||
976 | for (i = 0; i < ncmd; i++) | |
977 | { | |
9748446f | 978 | if (!SET_TOP_LEVEL ()) |
d75710b0 FF |
979 | { |
980 | if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0') | |
981 | read_command_file (stdin); | |
982 | else | |
983 | source_command (cmdarg[i], !batch); | |
984 | do_cleanups (ALL_CLEANUPS); | |
985 | } | |
986 | } | |
51b57ded | 987 | free ((PTR)cmdarg); |
bd5635a1 | 988 | |
8b3c897a | 989 | /* Read in the old history after all the command files have been read. */ |
fc61e9ee | 990 | init_history(); |
8b3c897a | 991 | |
bd5635a1 RP |
992 | if (batch) |
993 | { | |
994 | /* We have hit the end of the batch file. */ | |
995 | exit (0); | |
996 | } | |
997 | ||
998 | /* Do any host- or target-specific hacks. This is used for i960 targets | |
999 | to force the user to set a nindy target and spec its parameters. */ | |
1000 | ||
1001 | #ifdef BEFORE_MAIN_LOOP_HOOK | |
1002 | BEFORE_MAIN_LOOP_HOOK; | |
1003 | #endif | |
1004 | ||
1005 | /* The command loop. */ | |
1006 | ||
1007 | while (1) | |
1008 | { | |
9748446f | 1009 | if (!SET_TOP_LEVEL ()) |
bd5635a1 | 1010 | { |
f266e564 | 1011 | do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */ |
a6b26c44 SS |
1012 | /* start-sanitize-mpw */ |
1013 | #ifdef MPW | |
1014 | /* If we're being a Mac application, go into a Mac-specific | |
1015 | event-handling loop instead. We still want to be inside | |
1016 | the outer loop, because that will catch longjmps resulting | |
1017 | from some command executions. */ | |
1018 | if (mac_app) | |
1019 | mac_command_loop (); | |
1020 | else | |
1021 | #endif /* MPW */ | |
60b3e281 | 1022 | /* end-sanitize-mpw */ |
bd5635a1 RP |
1023 | command_loop (); |
1024 | quit_command ((char *)0, instream == stdin); | |
1025 | } | |
1026 | } | |
1027 | /* No exit -- exit is through quit_command. */ | |
1028 | } | |
d8fc8773 | 1029 | #endif /* MAIN_OVERRIDE */ |
bd5635a1 | 1030 | |
b5af69c3 JG |
1031 | void |
1032 | execute_user_command (c, args) | |
1033 | struct cmd_list_element *c; | |
1034 | char *args; | |
1035 | { | |
1036 | register struct command_line *cmdlines; | |
1037 | struct cleanup *old_chain; | |
1038 | ||
1039 | if (args) | |
1040 | error ("User-defined commands cannot take arguments."); | |
1041 | ||
1042 | cmdlines = c->user_commands; | |
1043 | if (cmdlines == 0) | |
1044 | /* Null command */ | |
1045 | return; | |
1046 | ||
1047 | /* Set the instream to 0, indicating execution of a | |
1048 | user-defined function. */ | |
1049 | old_chain = make_cleanup (source_cleanup, instream); | |
1050 | instream = (FILE *) 0; | |
1051 | while (cmdlines) | |
1052 | { | |
1053 | execute_command (cmdlines->line, 0); | |
1054 | cmdlines = cmdlines->next; | |
1055 | } | |
1056 | do_cleanups (old_chain); | |
1057 | } | |
1058 | ||
bd5635a1 RP |
1059 | /* Execute the line P as a command. |
1060 | Pass FROM_TTY as second argument to the defining function. */ | |
1061 | ||
1062 | void | |
1063 | execute_command (p, from_tty) | |
1064 | char *p; | |
1065 | int from_tty; | |
1066 | { | |
1067 | register struct cmd_list_element *c; | |
bd099407 | 1068 | register enum language flang; |
bd099407 | 1069 | static int warned = 0; |
bd5635a1 RP |
1070 | |
1071 | free_all_values (); | |
1072 | ||
1073 | /* This can happen when command_line_input hits end of file. */ | |
1074 | if (p == NULL) | |
1075 | return; | |
1076 | ||
1077 | while (*p == ' ' || *p == '\t') p++; | |
1078 | if (*p) | |
1079 | { | |
1080 | char *arg; | |
1081 | ||
1082 | c = lookup_cmd (&p, cmdlist, "", 0, 1); | |
1083 | /* Pass null arg rather than an empty one. */ | |
1084 | arg = *p ? p : 0; | |
b5af69c3 JG |
1085 | |
1086 | /* If this command has been hooked, run the hook first. */ | |
1087 | if (c->hook) | |
1088 | execute_user_command (c->hook, (char *)0); | |
1089 | ||
bd5635a1 | 1090 | if (c->class == class_user) |
b5af69c3 | 1091 | execute_user_command (c, arg); |
bd5635a1 RP |
1092 | else if (c->type == set_cmd || c->type == show_cmd) |
1093 | do_setshow_command (arg, from_tty & caution, c); | |
30875e1c | 1094 | else if (c->function.cfunc == NO_FUNCTION) |
bd5635a1 RP |
1095 | error ("That is not a command, just a help topic."); |
1096 | else | |
30875e1c | 1097 | (*c->function.cfunc) (arg, from_tty & caution); |
bd099407 JG |
1098 | } |
1099 | ||
afe4ca15 | 1100 | /* Tell the user if the language has changed (except first time). */ |
b5af69c3 | 1101 | if (current_language != expected_language) |
bd099407 JG |
1102 | { |
1103 | if (language_mode == language_mode_auto) { | |
b5af69c3 | 1104 | language_info (1); /* Print what changed. */ |
bd5635a1 | 1105 | } |
bd099407 JG |
1106 | warned = 0; |
1107 | } | |
1108 | ||
1109 | /* Warn the user if the working language does not match the | |
1110 | language of the current frame. Only warn the user if we are | |
1111 | actually running the program, i.e. there is a stack. */ | |
afe4ca15 JG |
1112 | /* FIXME: This should be cacheing the frame and only running when |
1113 | the frame changes. */ | |
bd099407 JG |
1114 | if (target_has_stack) |
1115 | { | |
afe4ca15 JG |
1116 | flang = get_frame_language (); |
1117 | if (!warned | |
1118 | && flang != language_unknown | |
1119 | && flang != current_language->la_language) | |
bd099407 JG |
1120 | { |
1121 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
1122 | warned = 1; | |
1123 | } | |
1124 | } | |
bd5635a1 RP |
1125 | } |
1126 | ||
1127 | /* ARGSUSED */ | |
30875e1c | 1128 | static void |
f266e564 | 1129 | command_loop_marker (foo) |
bd5635a1 RP |
1130 | int foo; |
1131 | { | |
1132 | } | |
1133 | ||
1134 | /* Read commands from `instream' and execute them | |
1135 | until end of file or error reading instream. */ | |
30875e1c | 1136 | static void |
bd5635a1 RP |
1137 | command_loop () |
1138 | { | |
1139 | struct cleanup *old_chain; | |
1140 | char *command; | |
1141 | int stdin_is_tty = ISATTY (stdin); | |
1142 | ||
1143 | while (!feof (instream)) | |
1144 | { | |
1145 | if (window_hook && instream == stdin) | |
1146 | (*window_hook) (instream, prompt); | |
1147 | ||
1148 | quit_flag = 0; | |
1149 | if (instream == stdin && stdin_is_tty) | |
1150 | reinitialize_more_filter (); | |
f266e564 | 1151 | old_chain = make_cleanup (command_loop_marker, 0); |
30875e1c | 1152 | command = command_line_input (instream == stdin ? prompt : (char *) NULL, |
a6b26c44 | 1153 | instream == stdin, "prompt"); |
bd5635a1 RP |
1154 | if (command == 0) |
1155 | return; | |
1156 | execute_command (command, instream == stdin); | |
1157 | /* Do any commands attached to breakpoint we stopped at. */ | |
1158 | bpstat_do_actions (&stop_bpstat); | |
1159 | do_cleanups (old_chain); | |
1160 | } | |
1161 | } | |
1162 | \f | |
1163 | /* Commands call this if they do not want to be repeated by null lines. */ | |
1164 | ||
1165 | void | |
1166 | dont_repeat () | |
1167 | { | |
6c803036 JK |
1168 | if (server_command) |
1169 | return; | |
1170 | ||
bd5635a1 RP |
1171 | /* If we aren't reading from standard input, we are saving the last |
1172 | thing read from stdin in line and don't want to delete it. Null lines | |
1173 | won't repeat here in any case. */ | |
1174 | if (instream == stdin) | |
1175 | *line = 0; | |
1176 | } | |
1177 | \f | |
1178 | /* Read a line from the stream "instream" without command line editing. | |
1179 | ||
1180 | It prints PRROMPT once at the start. | |
bdbd5f50 JG |
1181 | Action is compatible with "readline", e.g. space for the result is |
1182 | malloc'd and should be freed by the caller. | |
bd5635a1 | 1183 | |
bdbd5f50 | 1184 | A NULL return means end of file. */ |
bd5635a1 | 1185 | char * |
bdbd5f50 | 1186 | gdb_readline (prrompt) |
bd5635a1 | 1187 | char *prrompt; |
bd5635a1 RP |
1188 | { |
1189 | int c; | |
1190 | char *result; | |
1191 | int input_index = 0; | |
1192 | int result_size = 80; | |
1193 | ||
1194 | if (prrompt) | |
1195 | { | |
c35475f9 JG |
1196 | /* Don't use a _filtered function here. It causes the assumed |
1197 | character position to be off, since the newline we read from | |
1198 | the user is not accounted for. */ | |
199b2450 | 1199 | fputs_unfiltered (prrompt, gdb_stdout); |
a6b26c44 SS |
1200 | /* start-sanitize-mpw */ |
1201 | #ifdef MPW | |
1202 | /* Move to a new line so the entered line doesn't have a prompt | |
1203 | on the front of it. */ | |
1204 | fputs_unfiltered ("\n", gdb_stdout); | |
1205 | #endif /* MPW */ | |
1206 | /* end-sanitize-mpw */ | |
199b2450 | 1207 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
1208 | } |
1209 | ||
bdbd5f50 | 1210 | result = (char *) xmalloc (result_size); |
bd5635a1 RP |
1211 | |
1212 | while (1) | |
1213 | { | |
1214 | /* Read from stdin if we are executing a user defined command. | |
1215 | This is the right thing for prompt_for_continue, at least. */ | |
1216 | c = fgetc (instream ? instream : stdin); | |
bdbd5f50 JG |
1217 | |
1218 | if (c == EOF) | |
bd5635a1 | 1219 | { |
d0d8484a SG |
1220 | if (input_index > 0) |
1221 | /* The last line does not end with a newline. Return it, and | |
1222 | if we are called again fgetc will still return EOF and | |
1223 | we'll return NULL then. */ | |
1224 | break; | |
bdbd5f50 JG |
1225 | free (result); |
1226 | return NULL; | |
bd5635a1 | 1227 | } |
bd5635a1 | 1228 | |
bdbd5f50 JG |
1229 | if (c == '\n') |
1230 | break; | |
bd5635a1 | 1231 | |
bdbd5f50 JG |
1232 | result[input_index++] = c; |
1233 | while (input_index >= result_size) | |
1234 | { | |
1235 | result_size *= 2; | |
1236 | result = (char *) xrealloc (result, result_size); | |
1237 | } | |
bd5635a1 | 1238 | } |
bdbd5f50 JG |
1239 | |
1240 | result[input_index++] = '\0'; | |
1241 | return result; | |
bd5635a1 RP |
1242 | } |
1243 | ||
bd5635a1 RP |
1244 | /* Variables which control command line editing and history |
1245 | substitution. These variables are given default values at the end | |
1246 | of this file. */ | |
1247 | static int command_editing_p; | |
1248 | static int history_expansion_p; | |
1249 | static int write_history_p; | |
1250 | static int history_size; | |
1251 | static char *history_filename; | |
1252 | ||
c307bb11 JK |
1253 | /* readline uses the word breaks for two things: |
1254 | (1) In figuring out where to point the TEXT parameter to the | |
1255 | rl_completion_entry_function. Since we don't use TEXT for much, | |
1256 | it doesn't matter a lot what the word breaks are for this purpose, but | |
1257 | it does affect how much stuff M-? lists. | |
1258 | (2) If one of the matches contains a word break character, readline | |
1259 | will quote it. That's why we switch between | |
1260 | gdb_completer_word_break_characters and | |
1261 | gdb_completer_command_word_break_characters. I'm not sure when | |
1262 | we need this behavior (perhaps for funky characters in C++ symbols?). */ | |
1263 | ||
bd5635a1 RP |
1264 | /* Variables which are necessary for fancy command line editing. */ |
1265 | char *gdb_completer_word_break_characters = | |
a8e033f2 SG |
1266 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,-"; |
1267 | ||
1268 | /* When completing on command names, we remove '-' from the list of | |
1269 | word break characters, since we use it in command names. If the | |
1270 | readline library sees one in any of the current completion strings, | |
1271 | it thinks that the string needs to be quoted and automatically supplies | |
1272 | a leading quote. */ | |
1273 | char *gdb_completer_command_word_break_characters = | |
1274 | " \t\n!@#$%^&*()+=|~`}{[]\"';:?/>.<,"; | |
1275 | ||
51b57ded FF |
1276 | /* Characters that can be used to quote completion strings. Note that we |
1277 | can't include '"' because the gdb C parser treats such quoted sequences | |
1278 | as strings. */ | |
1279 | char *gdb_completer_quote_characters = | |
1280 | "'"; | |
bd5635a1 RP |
1281 | |
1282 | /* Functions that are used as part of the fancy command line editing. */ | |
1283 | ||
1284 | /* This can be used for functions which don't want to complete on symbols | |
1285 | but don't want to complete on anything else either. */ | |
1286 | /* ARGSUSED */ | |
1287 | char ** | |
c307bb11 | 1288 | noop_completer (text, prefix) |
bd5635a1 | 1289 | char *text; |
c307bb11 | 1290 | char *prefix; |
bd5635a1 RP |
1291 | { |
1292 | return NULL; | |
1293 | } | |
1294 | ||
bd50d1b0 | 1295 | /* Complete on filenames. */ |
bd50d1b0 | 1296 | char ** |
c307bb11 | 1297 | filename_completer (text, word) |
bd50d1b0 | 1298 | char *text; |
c307bb11 | 1299 | char *word; |
bd50d1b0 JK |
1300 | { |
1301 | /* From readline. */ | |
1302 | extern char *filename_completion_function (); | |
1303 | int subsequent_name; | |
1304 | char **return_val; | |
1305 | int return_val_used; | |
1306 | int return_val_alloced; | |
1307 | ||
1308 | return_val_used = 0; | |
1309 | /* Small for testing. */ | |
1310 | return_val_alloced = 1; | |
1311 | return_val = (char **) xmalloc (return_val_alloced * sizeof (char *)); | |
1312 | ||
1313 | subsequent_name = 0; | |
1314 | while (1) | |
1315 | { | |
1316 | char *p; | |
1317 | p = filename_completion_function (text, subsequent_name); | |
1318 | if (return_val_used >= return_val_alloced) | |
1319 | { | |
1320 | return_val_alloced *= 2; | |
1321 | return_val = | |
1322 | (char **) xrealloc (return_val, | |
1323 | return_val_alloced * sizeof (char *)); | |
1324 | } | |
bd50d1b0 | 1325 | if (p == NULL) |
c307bb11 JK |
1326 | { |
1327 | return_val[return_val_used++] = p; | |
1328 | break; | |
1329 | } | |
1330 | /* Like emacs, don't complete on old versions. Especially useful | |
1331 | in the "source" command. */ | |
1332 | if (p[strlen (p) - 1] == '~') | |
1333 | continue; | |
1334 | ||
1335 | { | |
1336 | char *q; | |
1337 | if (word == text) | |
1338 | /* Return exactly p. */ | |
1339 | return_val[return_val_used++] = p; | |
1340 | else if (word > text) | |
1341 | { | |
1342 | /* Return some portion of p. */ | |
1343 | q = xmalloc (strlen (p) + 5); | |
1344 | strcpy (q, p + (word - text)); | |
1345 | return_val[return_val_used++] = q; | |
1346 | free (p); | |
1347 | } | |
1348 | else | |
1349 | { | |
1350 | /* Return some of TEXT plus p. */ | |
1351 | q = xmalloc (strlen (p) + (text - word) + 5); | |
1352 | strncpy (q, word, text - word); | |
1353 | q[text - word] = '\0'; | |
1354 | strcat (q, p); | |
1355 | return_val[return_val_used++] = q; | |
1356 | free (p); | |
1357 | } | |
1358 | } | |
bd50d1b0 JK |
1359 | subsequent_name = 1; |
1360 | } | |
c307bb11 JK |
1361 | #if 0 |
1362 | /* There is no way to do this just long enough to affect quote inserting | |
1363 | without also affecting the next completion. This should be fixed in | |
1364 | readline. FIXME. */ | |
1365 | /* Insure that readline does the right thing | |
1366 | with respect to inserting quotes. */ | |
1367 | rl_completer_word_break_characters = ""; | |
1368 | #endif | |
bd50d1b0 JK |
1369 | return return_val; |
1370 | } | |
1371 | ||
c307bb11 JK |
1372 | /* Here are some useful test cases for completion. FIXME: These should |
1373 | be put in the test suite. They should be tested with both M-? and TAB. | |
1374 | ||
1375 | "show output-" "radix" | |
1376 | "show output" "-radix" | |
1377 | "p" ambiguous (commands starting with p--path, print, printf, etc.) | |
1378 | "p " ambiguous (all symbols) | |
1379 | "info t foo" no completions | |
1380 | "info t " no completions | |
1381 | "info t" ambiguous ("info target", "info terminal", etc.) | |
1382 | "info ajksdlfk" no completions | |
1383 | "info ajksdlfk " no completions | |
1384 | "info" " " | |
1385 | "info " ambiguous (all info commands) | |
1386 | "p \"a" no completions (string constant) | |
1387 | "p 'a" ambiguous (all symbols starting with a) | |
1388 | "p b-a" ambiguous (all symbols starting with a) | |
1389 | "p b-" ambiguous (all symbols) | |
1390 | "file Make" "file" (word break hard to screw up here) | |
09973223 | 1391 | "file ../gdb.stabs/we" "ird" (needs to not break word at slash) |
c307bb11 JK |
1392 | */ |
1393 | ||
1394 | /* Generate completions one by one for the completer. Each time we are | |
1395 | called return another potential completion to the caller. The function | |
1396 | is misnamed; it just completes on commands or passes the buck to the | |
1397 | command's completer function; the stuff specific to symbol completion | |
1398 | is in make_symbol_completion_list. | |
1399 | ||
1400 | TEXT is readline's idea of the "word" we are looking at; we don't really | |
1401 | like readline's ideas about word breaking so we ignore it. | |
51b57ded FF |
1402 | |
1403 | MATCHES is the number of matches that have currently been collected from | |
1404 | calling this completion function. When zero, then we need to initialize, | |
1405 | otherwise the initialization has already taken place and we can just | |
1406 | return the next potential completion string. | |
30875e1c | 1407 | |
51b57ded FF |
1408 | Returns NULL if there are no more completions, else a pointer to a string |
1409 | which is a possible completion. | |
1410 | ||
1411 | RL_LINE_BUFFER is available to be looked at; it contains the entire text | |
1412 | of the line. RL_POINT is the offset in that line of the cursor. You | |
1413 | should pretend that the line ends at RL_POINT. */ | |
c307bb11 | 1414 | |
30875e1c | 1415 | static char * |
51b57ded | 1416 | symbol_completion_function (text, matches) |
bd5635a1 | 1417 | char *text; |
51b57ded | 1418 | int matches; |
bd5635a1 | 1419 | { |
51b57ded FF |
1420 | static char **list = (char **)NULL; /* Cache of completions */ |
1421 | static int index; /* Next cached completion */ | |
1422 | char *output = NULL; | |
bd5635a1 | 1423 | char *tmp_command, *p; |
c307bb11 JK |
1424 | /* Pointer within tmp_command which corresponds to text. */ |
1425 | char *word; | |
bd5635a1 RP |
1426 | struct cmd_list_element *c, *result_list; |
1427 | ||
51b57ded | 1428 | if (matches == 0) |
bd5635a1 | 1429 | { |
51b57ded FF |
1430 | /* The caller is beginning to accumulate a new set of completions, so |
1431 | we need to find all of them now, and cache them for returning one at | |
1432 | a time on future calls. */ | |
1433 | ||
bd5635a1 | 1434 | if (list) |
51b57ded FF |
1435 | { |
1436 | /* Free the storage used by LIST, but not by the strings inside. | |
1437 | This is because rl_complete_internal () frees the strings. */ | |
1438 | free ((PTR)list); | |
1439 | } | |
bd5635a1 RP |
1440 | list = 0; |
1441 | index = 0; | |
1442 | ||
a8e033f2 SG |
1443 | /* Choose the default set of word break characters to break completions. |
1444 | If we later find out that we are doing completions on command strings | |
1445 | (as opposed to strings supplied by the individual command completer | |
1446 | functions, which can be any string) then we will switch to the | |
1447 | special word break set for command strings, which leaves out the | |
c307bb11 | 1448 | '-' character used in some commands. */ |
bd50d1b0 | 1449 | |
a8e033f2 SG |
1450 | rl_completer_word_break_characters = |
1451 | gdb_completer_word_break_characters; | |
1452 | ||
51b57ded | 1453 | /* Decide whether to complete on a list of gdb commands or on symbols. */ |
bd5635a1 RP |
1454 | tmp_command = (char *) alloca (rl_point + 1); |
1455 | p = tmp_command; | |
c307bb11 | 1456 | |
bd5635a1 RP |
1457 | strncpy (tmp_command, rl_line_buffer, rl_point); |
1458 | tmp_command[rl_point] = '\0'; | |
c307bb11 JK |
1459 | /* Since text always contains some number of characters leading up |
1460 | to rl_point, we can find the equivalent position in tmp_command | |
1461 | by subtracting that many characters from the end of tmp_command. */ | |
1462 | word = tmp_command + rl_point - strlen (text); | |
bd5635a1 RP |
1463 | |
1464 | if (rl_point == 0) | |
1465 | { | |
51b57ded FF |
1466 | /* An empty line we want to consider ambiguous; that is, it |
1467 | could be any command. */ | |
bd5635a1 RP |
1468 | c = (struct cmd_list_element *) -1; |
1469 | result_list = 0; | |
1470 | } | |
1471 | else | |
51b57ded FF |
1472 | { |
1473 | c = lookup_cmd_1 (&p, cmdlist, &result_list, 1); | |
1474 | } | |
bd5635a1 RP |
1475 | |
1476 | /* Move p up to the next interesting thing. */ | |
1477 | while (*p == ' ' || *p == '\t') | |
51b57ded FF |
1478 | { |
1479 | p++; | |
1480 | } | |
bd5635a1 RP |
1481 | |
1482 | if (!c) | |
51b57ded | 1483 | { |
c307bb11 JK |
1484 | /* It is an unrecognized command. So there are no |
1485 | possible completions. */ | |
51b57ded FF |
1486 | list = NULL; |
1487 | } | |
bd5635a1 RP |
1488 | else if (c == (struct cmd_list_element *) -1) |
1489 | { | |
c307bb11 JK |
1490 | char *q; |
1491 | ||
1492 | /* lookup_cmd_1 advances p up to the first ambiguous thing, but | |
1493 | doesn't advance over that thing itself. Do so now. */ | |
1494 | q = p; | |
1495 | while (*q && (isalnum (*q) || *q == '-' || *q == '_')) | |
1496 | ++q; | |
1497 | if (q != tmp_command + rl_point) | |
51b57ded | 1498 | { |
c307bb11 JK |
1499 | /* There is something beyond the ambiguous |
1500 | command, so there are no possible completions. For | |
1501 | example, "info t " or "info t foo" does not complete | |
1502 | to anything, because "info t" can be "info target" or | |
1503 | "info terminal". */ | |
1504 | list = NULL; | |
51b57ded | 1505 | } |
bd5635a1 | 1506 | else |
51b57ded | 1507 | { |
c307bb11 JK |
1508 | /* We're trying to complete on the command which was ambiguous. |
1509 | This we can deal with. */ | |
1510 | if (result_list) | |
1511 | { | |
1512 | list = complete_on_cmdlist (*result_list->prefixlist, p, | |
1513 | word); | |
1514 | } | |
1515 | else | |
1516 | { | |
1517 | list = complete_on_cmdlist (cmdlist, p, word); | |
1518 | } | |
1519 | /* Insure that readline does the right thing with respect to | |
1520 | inserting quotes. */ | |
1521 | rl_completer_word_break_characters = | |
1522 | gdb_completer_command_word_break_characters; | |
51b57ded | 1523 | } |
bd5635a1 RP |
1524 | } |
1525 | else | |
1526 | { | |
c307bb11 | 1527 | /* We've recognized a full command. */ |
bd5635a1 | 1528 | |
c307bb11 | 1529 | if (p == tmp_command + rl_point) |
51b57ded | 1530 | { |
c307bb11 JK |
1531 | /* There is no non-whitespace in the line beyond the command. */ |
1532 | ||
1533 | if (p[-1] == ' ' || p[-1] == '\t') | |
51b57ded | 1534 | { |
c307bb11 JK |
1535 | /* The command is followed by whitespace; we need to complete |
1536 | on whatever comes after command. */ | |
1537 | if (c->prefixlist) | |
1538 | { | |
1539 | /* It is a prefix command; what comes after it is | |
1540 | a subcommand (e.g. "info "). */ | |
1541 | list = complete_on_cmdlist (*c->prefixlist, p, word); | |
1542 | ||
1543 | /* Insure that readline does the right thing | |
1544 | with respect to inserting quotes. */ | |
1545 | rl_completer_word_break_characters = | |
1546 | gdb_completer_command_word_break_characters; | |
1547 | } | |
1548 | else | |
1549 | { | |
1550 | /* It is a normal command; what comes after it is | |
1551 | completed by the command's completer function. */ | |
1552 | list = (*c->completer) (p, word); | |
1553 | } | |
51b57ded | 1554 | } |
bd5635a1 | 1555 | else |
51b57ded | 1556 | { |
c307bb11 JK |
1557 | /* The command is not followed by whitespace; we need to |
1558 | complete on the command itself. e.g. "p" which is a | |
1559 | command itself but also can complete to "print", "ptype" | |
1560 | etc. */ | |
1561 | char *q; | |
1562 | ||
1563 | /* Find the command we are completing on. */ | |
1564 | q = p; | |
1565 | while (q > tmp_command) | |
1566 | { | |
1567 | if (isalnum (q[-1]) || q[-1] == '-' || q[-1] == '_') | |
1568 | --q; | |
1569 | else | |
1570 | break; | |
1571 | } | |
1572 | ||
1573 | list = complete_on_cmdlist (result_list, q, word); | |
1574 | ||
1575 | /* Insure that readline does the right thing | |
1576 | with respect to inserting quotes. */ | |
1577 | rl_completer_word_break_characters = | |
1578 | gdb_completer_command_word_break_characters; | |
51b57ded | 1579 | } |
bd5635a1 RP |
1580 | } |
1581 | else | |
1582 | { | |
c307bb11 JK |
1583 | /* There is non-whitespace beyond the command. */ |
1584 | ||
bd5635a1 RP |
1585 | if (c->prefixlist && !c->allow_unknown) |
1586 | { | |
c307bb11 JK |
1587 | /* It is an unrecognized subcommand of a prefix command, |
1588 | e.g. "info adsfkdj". */ | |
bd5635a1 | 1589 | list = NULL; |
bd5635a1 RP |
1590 | } |
1591 | else | |
51b57ded | 1592 | { |
c307bb11 JK |
1593 | /* It is a normal command. */ |
1594 | list = (*c->completer) (p, word); | |
51b57ded | 1595 | } |
bd5635a1 RP |
1596 | } |
1597 | } | |
1598 | } | |
1599 | ||
51b57ded FF |
1600 | /* If we found a list of potential completions during initialization then |
1601 | dole them out one at a time. The vector of completions is NULL | |
1602 | terminated, so after returning the last one, return NULL (and continue | |
1603 | to do so) each time we are called after that, until a new list is | |
1604 | available. */ | |
bd5635a1 | 1605 | |
51b57ded FF |
1606 | if (list) |
1607 | { | |
1608 | output = list[index]; | |
1609 | if (output) | |
1610 | { | |
1611 | index++; | |
1612 | } | |
1613 | } | |
bd5635a1 | 1614 | |
c307bb11 JK |
1615 | #if 0 |
1616 | /* Can't do this because readline hasn't yet checked the word breaks | |
1617 | for figuring out whether to insert a quote. */ | |
1618 | if (output == NULL) | |
1619 | /* Make sure the word break characters are set back to normal for the | |
1620 | next time that readline tries to complete something. */ | |
1621 | rl_completer_word_break_characters = | |
1622 | gdb_completer_word_break_characters; | |
1623 | #endif | |
1624 | ||
bd5635a1 RP |
1625 | return (output); |
1626 | } | |
51b57ded FF |
1627 | |
1628 | /* Skip over a possibly quoted word (as defined by the quote characters | |
1629 | and word break characters the completer uses). Returns pointer to the | |
1630 | location after the "word". */ | |
1631 | ||
1632 | char * | |
1633 | skip_quoted (str) | |
1634 | char *str; | |
1635 | { | |
1636 | char quote_char = '\0'; | |
1637 | char *scan; | |
1638 | ||
1639 | for (scan = str; *scan != '\0'; scan++) | |
1640 | { | |
1641 | if (quote_char != '\0') | |
1642 | { | |
1643 | /* Ignore everything until the matching close quote char */ | |
1644 | if (*scan == quote_char) | |
1645 | { | |
1646 | /* Found matching close quote. */ | |
1647 | scan++; | |
1648 | break; | |
1649 | } | |
1650 | } | |
1651 | else if (strchr (gdb_completer_quote_characters, *scan)) | |
1652 | { | |
1653 | /* Found start of a quoted string. */ | |
1654 | quote_char = *scan; | |
1655 | } | |
1656 | else if (strchr (gdb_completer_word_break_characters, *scan)) | |
1657 | { | |
1658 | break; | |
1659 | } | |
1660 | } | |
1661 | return (scan); | |
1662 | } | |
1663 | ||
bd5635a1 RP |
1664 | \f |
1665 | #ifdef STOP_SIGNAL | |
1666 | static void | |
30875e1c SG |
1667 | stop_sig (signo) |
1668 | int signo; | |
bd5635a1 RP |
1669 | { |
1670 | #if STOP_SIGNAL == SIGTSTP | |
1671 | signal (SIGTSTP, SIG_DFL); | |
1672 | sigsetmask (0); | |
1673 | kill (getpid (), SIGTSTP); | |
1674 | signal (SIGTSTP, stop_sig); | |
1675 | #else | |
1676 | signal (STOP_SIGNAL, stop_sig); | |
1677 | #endif | |
199b2450 TL |
1678 | printf_unfiltered ("%s", prompt); |
1679 | gdb_flush (gdb_stdout); | |
bd5635a1 RP |
1680 | |
1681 | /* Forget about any previous command -- null line now will do nothing. */ | |
1682 | dont_repeat (); | |
1683 | } | |
1684 | #endif /* STOP_SIGNAL */ | |
1685 | ||
bd5635a1 | 1686 | /* Initialize signal handlers. */ |
f266e564 | 1687 | static void |
30875e1c SG |
1688 | do_nothing (signo) |
1689 | int signo; | |
f266e564 JK |
1690 | { |
1691 | } | |
1692 | ||
bd5635a1 RP |
1693 | static void |
1694 | init_signals () | |
1695 | { | |
bd5635a1 RP |
1696 | signal (SIGINT, request_quit); |
1697 | ||
1698 | /* If we initialize SIGQUIT to SIG_IGN, then the SIG_IGN will get | |
1699 | passed to the inferior, which we don't want. It would be | |
1700 | possible to do a "signal (SIGQUIT, SIG_DFL)" after we fork, but | |
bdbd5f50 | 1701 | on BSD4.3 systems using vfork, that can affect the |
bd5635a1 | 1702 | GDB process as well as the inferior (the signal handling tables |
bdbd5f50 | 1703 | might be in memory, shared between the two). Since we establish |
bd5635a1 RP |
1704 | a handler for SIGQUIT, when we call exec it will set the signal |
1705 | to SIG_DFL for us. */ | |
1706 | signal (SIGQUIT, do_nothing); | |
1707 | if (signal (SIGHUP, do_nothing) != SIG_IGN) | |
1708 | signal (SIGHUP, disconnect); | |
1709 | signal (SIGFPE, float_handler); | |
1eeba686 PB |
1710 | |
1711 | #if defined(SIGWINCH) && defined(SIGWINCH_HANDLER) | |
1712 | signal (SIGWINCH, SIGWINCH_HANDLER); | |
1713 | #endif | |
bd5635a1 RP |
1714 | } |
1715 | \f | |
1716 | /* Read one line from the command input stream `instream' | |
1717 | into the local static buffer `linebuffer' (whose current length | |
1718 | is `linelength'). | |
1719 | The buffer is made bigger as necessary. | |
1720 | Returns the address of the start of the line. | |
1721 | ||
1722 | NULL is returned for end of file. | |
1723 | ||
1724 | *If* the instream == stdin & stdin is a terminal, the line read | |
1725 | is copied into the file line saver (global var char *line, | |
1726 | length linesize) so that it can be duplicated. | |
1727 | ||
1728 | This routine either uses fancy command line editing or | |
1729 | simple input as the user has requested. */ | |
1730 | ||
1731 | char * | |
a6b26c44 | 1732 | command_line_input (prrompt, repeat, annotation_suffix) |
bd5635a1 RP |
1733 | char *prrompt; |
1734 | int repeat; | |
a6b26c44 | 1735 | char *annotation_suffix; |
bd5635a1 RP |
1736 | { |
1737 | static char *linebuffer = 0; | |
30875e1c | 1738 | static unsigned linelength = 0; |
bd5635a1 RP |
1739 | register char *p; |
1740 | char *p1; | |
1741 | char *rl; | |
1742 | char *local_prompt = prrompt; | |
1743 | register int c; | |
1744 | char *nline; | |
1745 | char got_eof = 0; | |
1746 | ||
a6b26c44 | 1747 | if (annotation_level > 1 && instream == stdin) |
6c803036 | 1748 | { |
a6b26c44 SS |
1749 | local_prompt = alloca ((prrompt == NULL ? 0 : strlen (prrompt)) |
1750 | + strlen (annotation_suffix) + 40); | |
1751 | if (prrompt == NULL) | |
1752 | local_prompt[0] = '\0'; | |
1753 | else | |
1754 | strcpy (local_prompt, prrompt); | |
1755 | strcat (local_prompt, "\n\032\032"); | |
1756 | strcat (local_prompt, annotation_suffix); | |
1757 | strcat (local_prompt, "\n"); | |
6c803036 JK |
1758 | } |
1759 | ||
bd5635a1 RP |
1760 | if (linebuffer == 0) |
1761 | { | |
1762 | linelength = 80; | |
1763 | linebuffer = (char *) xmalloc (linelength); | |
1764 | } | |
1765 | ||
1766 | p = linebuffer; | |
1767 | ||
1768 | /* Control-C quits instantly if typed while in this loop | |
1769 | since it should not wait until the user types a newline. */ | |
1770 | immediate_quit++; | |
1771 | #ifdef STOP_SIGNAL | |
c307bb11 JK |
1772 | if (job_control) |
1773 | signal (STOP_SIGNAL, stop_sig); | |
bd5635a1 RP |
1774 | #endif |
1775 | ||
1776 | while (1) | |
1777 | { | |
9e8db445 JK |
1778 | /* Make sure that all output has been output. Some machines may let |
1779 | you get away with leaving out some of the gdb_flush, but not all. */ | |
1780 | wrap_here (""); | |
199b2450 TL |
1781 | gdb_flush (gdb_stdout); |
1782 | gdb_flush (gdb_stderr); | |
e522fb52 | 1783 | |
d6bbac39 JK |
1784 | if (source_file_name != NULL) |
1785 | { | |
1786 | ++source_line_number; | |
1787 | sprintf (source_error, | |
1788 | "%s%s:%d: Error in sourced command file:\n", | |
1789 | source_pre_error, | |
1790 | source_file_name, | |
1791 | source_line_number); | |
1792 | error_pre_print = source_error; | |
1793 | } | |
1794 | ||
6c803036 | 1795 | if (annotation_level > 1 && instream == stdin) |
a6b26c44 SS |
1796 | { |
1797 | printf_unfiltered ("\n\032\032pre-"); | |
1798 | printf_unfiltered (annotation_suffix); | |
1799 | printf_unfiltered ("\n"); | |
1800 | } | |
6c803036 | 1801 | |
bd5635a1 RP |
1802 | /* Don't use fancy stuff if not talking to stdin. */ |
1803 | if (command_editing_p && instream == stdin | |
1804 | && ISATTY (instream)) | |
1805 | rl = readline (local_prompt); | |
1806 | else | |
bdbd5f50 | 1807 | rl = gdb_readline (local_prompt); |
bd5635a1 | 1808 | |
6c803036 | 1809 | if (annotation_level > 1 && instream == stdin) |
a6b26c44 SS |
1810 | { |
1811 | printf_unfiltered ("\n\032\032post-"); | |
1812 | printf_unfiltered (annotation_suffix); | |
1813 | printf_unfiltered ("\n"); | |
1814 | } | |
6c803036 | 1815 | |
bd5635a1 RP |
1816 | if (!rl || rl == (char *) EOF) |
1817 | { | |
1818 | got_eof = 1; | |
1819 | break; | |
1820 | } | |
1821 | if (strlen(rl) + 1 + (p - linebuffer) > linelength) | |
1822 | { | |
1823 | linelength = strlen(rl) + 1 + (p - linebuffer); | |
1824 | nline = (char *) xrealloc (linebuffer, linelength); | |
1825 | p += nline - linebuffer; | |
1826 | linebuffer = nline; | |
1827 | } | |
1828 | p1 = rl; | |
1829 | /* Copy line. Don't copy null at end. (Leaves line alone | |
1830 | if this was just a newline) */ | |
1831 | while (*p1) | |
1832 | *p++ = *p1++; | |
1833 | ||
1834 | free (rl); /* Allocated in readline. */ | |
1835 | ||
1836 | if (p == linebuffer || *(p - 1) != '\\') | |
1837 | break; | |
1838 | ||
1839 | p--; /* Put on top of '\'. */ | |
1840 | local_prompt = (char *) 0; | |
1841 | } | |
1842 | ||
1843 | #ifdef STOP_SIGNAL | |
c307bb11 JK |
1844 | if (job_control) |
1845 | signal (STOP_SIGNAL, SIG_DFL); | |
bd5635a1 RP |
1846 | #endif |
1847 | immediate_quit--; | |
1848 | ||
1849 | if (got_eof) | |
1850 | return NULL; | |
1851 | ||
6c803036 JK |
1852 | #define SERVER_COMMAND_LENGTH 7 |
1853 | server_command = | |
1854 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
1855 | && STREQN (linebuffer, "server ", SERVER_COMMAND_LENGTH); | |
1856 | if (server_command) | |
1857 | { | |
1858 | /* Note that we don't set `line'. Between this and the check in | |
1859 | dont_repeat, this insures that repeating will still do the | |
1860 | right thing. */ | |
1861 | *p = '\0'; | |
1862 | return linebuffer + SERVER_COMMAND_LENGTH; | |
1863 | } | |
1864 | ||
bd5635a1 RP |
1865 | /* Do history expansion if that is wished. */ |
1866 | if (history_expansion_p && instream == stdin | |
1867 | && ISATTY (instream)) | |
1868 | { | |
1869 | char *history_value; | |
1870 | int expanded; | |
1871 | ||
1872 | *p = '\0'; /* Insert null now. */ | |
1873 | expanded = history_expand (linebuffer, &history_value); | |
1874 | if (expanded) | |
1875 | { | |
1876 | /* Print the changes. */ | |
199b2450 | 1877 | printf_unfiltered ("%s\n", history_value); |
bd5635a1 RP |
1878 | |
1879 | /* If there was an error, call this function again. */ | |
1880 | if (expanded < 0) | |
1881 | { | |
1882 | free (history_value); | |
a6b26c44 | 1883 | return command_line_input (prrompt, repeat, annotation_suffix); |
bd5635a1 RP |
1884 | } |
1885 | if (strlen (history_value) > linelength) | |
1886 | { | |
1887 | linelength = strlen (history_value) + 1; | |
1888 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
1889 | } | |
1890 | strcpy (linebuffer, history_value); | |
1891 | p = linebuffer + strlen(linebuffer); | |
1892 | free (history_value); | |
1893 | } | |
1894 | } | |
1895 | ||
1896 | /* If we just got an empty line, and that is supposed | |
1897 | to repeat the previous command, return the value in the | |
1898 | global buffer. */ | |
1899 | if (repeat) | |
1900 | { | |
1901 | if (p == linebuffer) | |
1902 | return line; | |
1903 | p1 = linebuffer; | |
1904 | while (*p1 == ' ' || *p1 == '\t') | |
1905 | p1++; | |
1906 | if (!*p1) | |
1907 | return line; | |
1908 | } | |
1909 | ||
1910 | *p = 0; | |
1911 | ||
1912 | /* Add line to history if appropriate. */ | |
1913 | if (instream == stdin | |
1914 | && ISATTY (stdin) && *linebuffer) | |
1915 | add_history (linebuffer); | |
1916 | ||
a6b26c44 | 1917 | /* Note: lines consisting solely of comments are added to the command |
bd5635a1 RP |
1918 | history. This is useful when you type a command, and then |
1919 | realize you don't want to execute it quite yet. You can comment | |
1920 | out the command and then later fetch it from the value history | |
1921 | and remove the '#'. The kill ring is probably better, but some | |
1922 | people are in the habit of commenting things out. */ | |
1923 | p1 = linebuffer; | |
1924 | while ((c = *p1++) != '\0') | |
1925 | { | |
1926 | if (c == '"') | |
1927 | while ((c = *p1++) != '"') | |
1928 | { | |
1929 | /* Make sure an escaped '"' doesn't make us think the string | |
1930 | is ended. */ | |
1931 | if (c == '\\') | |
1932 | parse_escape (&p1); | |
1933 | if (c == '\0') | |
1934 | break; | |
1935 | } | |
1936 | else if (c == '\'') | |
1937 | while ((c = *p1++) != '\'') | |
1938 | { | |
1939 | /* Make sure an escaped '\'' doesn't make us think the string | |
1940 | is ended. */ | |
1941 | if (c == '\\') | |
1942 | parse_escape (&p1); | |
1943 | if (c == '\0') | |
1944 | break; | |
1945 | } | |
1946 | else if (c == '#') | |
1947 | { | |
1948 | /* Found a comment. */ | |
1949 | p1[-1] = '\0'; | |
1950 | break; | |
1951 | } | |
1952 | } | |
1953 | ||
1954 | /* Save into global buffer if appropriate. */ | |
1955 | if (repeat) | |
1956 | { | |
1957 | if (linelength > linesize) | |
1958 | { | |
1959 | line = xrealloc (line, linelength); | |
1960 | linesize = linelength; | |
1961 | } | |
1962 | strcpy (line, linebuffer); | |
1963 | return line; | |
1964 | } | |
1965 | ||
1966 | return linebuffer; | |
1967 | } | |
1968 | \f | |
1969 | /* Read lines from the input stream | |
1970 | and accumulate them in a chain of struct command_line's | |
1971 | which is then returned. */ | |
1972 | ||
1973 | struct command_line * | |
1974 | read_command_lines () | |
1975 | { | |
1976 | struct command_line *first = 0; | |
1977 | register struct command_line *next, *tail = 0; | |
1978 | register char *p, *p1; | |
1979 | struct cleanup *old_chain = 0; | |
1980 | ||
1981 | while (1) | |
1982 | { | |
1983 | dont_repeat (); | |
a6b26c44 | 1984 | p = command_line_input ((char *) NULL, instream == stdin, "commands"); |
bd5635a1 RP |
1985 | if (p == NULL) |
1986 | /* Treat end of file like "end". */ | |
1987 | break; | |
1988 | ||
1989 | /* Remove leading and trailing blanks. */ | |
1990 | while (*p == ' ' || *p == '\t') p++; | |
1991 | p1 = p + strlen (p); | |
1992 | while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) p1--; | |
1993 | ||
1994 | /* Is this "end"? */ | |
1995 | if (p1 - p == 3 && !strncmp (p, "end", 3)) | |
1996 | break; | |
1997 | ||
1998 | /* No => add this line to the chain of command lines. */ | |
1999 | next = (struct command_line *) xmalloc (sizeof (struct command_line)); | |
2000 | next->line = savestring (p, p1 - p); | |
2001 | next->next = 0; | |
2002 | if (tail) | |
2003 | { | |
2004 | tail->next = next; | |
2005 | } | |
2006 | else | |
2007 | { | |
2008 | /* We just read the first line. | |
2009 | From now on, arrange to throw away the lines we have | |
2010 | if we quit or get an error while inside this function. */ | |
2011 | first = next; | |
2012 | old_chain = make_cleanup (free_command_lines, &first); | |
2013 | } | |
2014 | tail = next; | |
2015 | } | |
2016 | ||
2017 | dont_repeat (); | |
2018 | ||
2019 | /* Now we are about to return the chain to our caller, | |
2020 | so freeing it becomes his responsibility. */ | |
2021 | if (first) | |
2022 | discard_cleanups (old_chain); | |
2023 | return first; | |
2024 | } | |
2025 | ||
2026 | /* Free a chain of struct command_line's. */ | |
2027 | ||
2028 | void | |
2029 | free_command_lines (lptr) | |
2030 | struct command_line **lptr; | |
2031 | { | |
2032 | register struct command_line *l = *lptr; | |
2033 | register struct command_line *next; | |
2034 | ||
2035 | while (l) | |
2036 | { | |
2037 | next = l->next; | |
2038 | free (l->line); | |
51b57ded | 2039 | free ((PTR)l); |
bd5635a1 RP |
2040 | l = next; |
2041 | } | |
2042 | } | |
2043 | \f | |
2044 | /* Add an element to the list of info subcommands. */ | |
2045 | ||
2046 | void | |
2047 | add_info (name, fun, doc) | |
2048 | char *name; | |
30875e1c | 2049 | void (*fun) PARAMS ((char *, int)); |
bd5635a1 RP |
2050 | char *doc; |
2051 | { | |
2052 | add_cmd (name, no_class, fun, doc, &infolist); | |
2053 | } | |
2054 | ||
2055 | /* Add an alias to the list of info subcommands. */ | |
2056 | ||
2057 | void | |
2058 | add_info_alias (name, oldname, abbrev_flag) | |
2059 | char *name; | |
2060 | char *oldname; | |
2061 | int abbrev_flag; | |
2062 | { | |
2063 | add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
2064 | } | |
2065 | ||
2066 | /* The "info" command is defined as a prefix, with allow_unknown = 0. | |
2067 | Therefore, its own definition is called only for "info" with no args. */ | |
2068 | ||
2069 | /* ARGSUSED */ | |
2070 | static void | |
2071 | info_command (arg, from_tty) | |
2072 | char *arg; | |
2073 | int from_tty; | |
2074 | { | |
199b2450 TL |
2075 | printf_unfiltered ("\"info\" must be followed by the name of an info command.\n"); |
2076 | help_list (infolist, "info ", -1, gdb_stdout); | |
bd5635a1 RP |
2077 | } |
2078 | ||
09973223 JK |
2079 | /* The "complete" command is used by Emacs to implement completion. */ |
2080 | ||
2081 | /* ARGSUSED */ | |
2082 | static void | |
2083 | complete_command (arg, from_tty) | |
2084 | char *arg; | |
2085 | int from_tty; | |
2086 | { | |
2087 | int i; | |
2088 | char *completion; | |
2089 | ||
2090 | dont_repeat (); | |
2091 | ||
0c1af47f JK |
2092 | if (arg == NULL) |
2093 | { | |
2094 | rl_line_buffer[0] = '\0'; | |
2095 | rl_point = 0; | |
2096 | } | |
2097 | else | |
2098 | { | |
2099 | strcpy (rl_line_buffer, arg); | |
2100 | rl_point = strlen (arg); | |
2101 | } | |
09973223 JK |
2102 | |
2103 | for (completion = symbol_completion_function (rl_line_buffer, i = 0); | |
2104 | completion; | |
2105 | completion = symbol_completion_function (rl_line_buffer, ++i)) | |
2106 | printf_unfiltered ("%s\n", completion); | |
2107 | } | |
2108 | ||
bd5635a1 RP |
2109 | /* The "show" command with no arguments shows all the settings. */ |
2110 | ||
2111 | /* ARGSUSED */ | |
2112 | static void | |
2113 | show_command (arg, from_tty) | |
2114 | char *arg; | |
2115 | int from_tty; | |
2116 | { | |
2117 | cmd_show_list (showlist, from_tty, ""); | |
2118 | } | |
2119 | \f | |
2120 | /* Add an element to the list of commands. */ | |
2121 | ||
2122 | void | |
2123 | add_com (name, class, fun, doc) | |
2124 | char *name; | |
2125 | enum command_class class; | |
30875e1c | 2126 | void (*fun) PARAMS ((char *, int)); |
bd5635a1 RP |
2127 | char *doc; |
2128 | { | |
2129 | add_cmd (name, class, fun, doc, &cmdlist); | |
2130 | } | |
2131 | ||
2132 | /* Add an alias or abbreviation command to the list of commands. */ | |
2133 | ||
2134 | void | |
2135 | add_com_alias (name, oldname, class, abbrev_flag) | |
2136 | char *name; | |
2137 | char *oldname; | |
2138 | enum command_class class; | |
2139 | int abbrev_flag; | |
2140 | { | |
2141 | add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
2142 | } | |
2143 | ||
2144 | void | |
2145 | error_no_arg (why) | |
2146 | char *why; | |
2147 | { | |
2148 | error ("Argument required (%s).", why); | |
2149 | } | |
2150 | ||
e1ce8aa5 | 2151 | /* ARGSUSED */ |
bd5635a1 RP |
2152 | static void |
2153 | help_command (command, from_tty) | |
2154 | char *command; | |
2155 | int from_tty; /* Ignored */ | |
2156 | { | |
199b2450 | 2157 | help_cmd (command, gdb_stdout); |
bd5635a1 RP |
2158 | } |
2159 | \f | |
2160 | static void | |
2161 | validate_comname (comname) | |
2162 | char *comname; | |
2163 | { | |
2164 | register char *p; | |
2165 | ||
2166 | if (comname == 0) | |
2167 | error_no_arg ("name of command to define"); | |
2168 | ||
2169 | p = comname; | |
2170 | while (*p) | |
2171 | { | |
c2e4669f | 2172 | if (!isalnum(*p) && *p != '-') |
bd5635a1 RP |
2173 | error ("Junk in argument list: \"%s\"", p); |
2174 | p++; | |
2175 | } | |
2176 | } | |
2177 | ||
51b57ded FF |
2178 | /* This is just a placeholder in the command data structures. */ |
2179 | static void | |
2180 | user_defined_command (ignore, from_tty) | |
2181 | char *ignore; | |
2182 | int from_tty; | |
2183 | { | |
2184 | } | |
2185 | ||
bd5635a1 RP |
2186 | static void |
2187 | define_command (comname, from_tty) | |
2188 | char *comname; | |
2189 | int from_tty; | |
2190 | { | |
2191 | register struct command_line *cmds; | |
fb29d681 | 2192 | register struct cmd_list_element *c, *newc, *hookc = 0; |
bd5635a1 | 2193 | char *tem = comname; |
b5af69c3 JG |
2194 | #define HOOK_STRING "hook-" |
2195 | #define HOOK_LEN 5 | |
bd5635a1 RP |
2196 | |
2197 | validate_comname (comname); | |
2198 | ||
afe4ca15 | 2199 | /* Look it up, and verify that we got an exact match. */ |
bd5635a1 | 2200 | c = lookup_cmd (&tem, cmdlist, "", -1, 1); |
2e4964ad | 2201 | if (c && !STREQ (comname, c->name)) |
afe4ca15 JG |
2202 | c = 0; |
2203 | ||
bd5635a1 RP |
2204 | if (c) |
2205 | { | |
2206 | if (c->class == class_user || c->class == class_alias) | |
2207 | tem = "Redefine command \"%s\"? "; | |
2208 | else | |
2209 | tem = "Really redefine built-in command \"%s\"? "; | |
c2e4669f JG |
2210 | if (!query (tem, c->name)) |
2211 | error ("Command \"%s\" not redefined.", c->name); | |
bd5635a1 RP |
2212 | } |
2213 | ||
b5af69c3 JG |
2214 | /* If this new command is a hook, then mark the command which it |
2215 | is hooking. Note that we allow hooking `help' commands, so that | |
2216 | we can hook the `stop' pseudo-command. */ | |
2217 | ||
2218 | if (!strncmp (comname, HOOK_STRING, HOOK_LEN)) | |
2219 | { | |
2220 | /* Look up cmd it hooks, and verify that we got an exact match. */ | |
2221 | tem = comname+HOOK_LEN; | |
2222 | hookc = lookup_cmd (&tem, cmdlist, "", -1, 0); | |
2e4964ad | 2223 | if (hookc && !STREQ (comname+HOOK_LEN, hookc->name)) |
b5af69c3 JG |
2224 | hookc = 0; |
2225 | if (!hookc) | |
2226 | { | |
2227 | warning ("Your new `%s' command does not hook any existing command.", | |
2228 | comname); | |
2229 | if (!query ("Proceed? ", (char *)0)) | |
2230 | error ("Not confirmed."); | |
2231 | } | |
2232 | } | |
2233 | ||
c2e4669f JG |
2234 | comname = savestring (comname, strlen (comname)); |
2235 | ||
b5af69c3 | 2236 | /* If the rest of the commands will be case insensitive, this one |
c2e4669f JG |
2237 | should behave in the same manner. */ |
2238 | for (tem = comname; *tem; tem++) | |
2239 | if (isupper(*tem)) *tem = tolower(*tem); | |
2240 | ||
bd5635a1 RP |
2241 | if (from_tty) |
2242 | { | |
199b2450 | 2243 | printf_unfiltered ("Type commands for definition of \"%s\".\n\ |
bd5635a1 | 2244 | End with a line saying just \"end\".\n", comname); |
199b2450 | 2245 | gdb_flush (gdb_stdout); |
bd5635a1 | 2246 | } |
bd5635a1 RP |
2247 | |
2248 | cmds = read_command_lines (); | |
2249 | ||
2250 | if (c && c->class == class_user) | |
2251 | free_command_lines (&c->user_commands); | |
2252 | ||
51b57ded | 2253 | newc = add_cmd (comname, class_user, user_defined_command, |
bd5635a1 RP |
2254 | (c && c->class == class_user) |
2255 | ? c->doc : savestring ("User-defined.", 13), &cmdlist); | |
2256 | newc->user_commands = cmds; | |
b5af69c3 JG |
2257 | |
2258 | /* If this new command is a hook, then mark both commands as being | |
2259 | tied. */ | |
2260 | if (hookc) | |
2261 | { | |
2262 | hookc->hook = newc; /* Target gets hooked. */ | |
2263 | newc->hookee = hookc; /* We are marked as hooking target cmd. */ | |
2264 | } | |
bd5635a1 RP |
2265 | } |
2266 | ||
2267 | static void | |
2268 | document_command (comname, from_tty) | |
2269 | char *comname; | |
2270 | int from_tty; | |
2271 | { | |
2272 | struct command_line *doclines; | |
2273 | register struct cmd_list_element *c; | |
2274 | char *tem = comname; | |
2275 | ||
2276 | validate_comname (comname); | |
2277 | ||
2278 | c = lookup_cmd (&tem, cmdlist, "", 0, 1); | |
2279 | ||
2280 | if (c->class != class_user) | |
2281 | error ("Command \"%s\" is built-in.", comname); | |
2282 | ||
2283 | if (from_tty) | |
199b2450 | 2284 | printf_unfiltered ("Type documentation for \"%s\".\n\ |
bd5635a1 RP |
2285 | End with a line saying just \"end\".\n", comname); |
2286 | ||
2287 | doclines = read_command_lines (); | |
2288 | ||
2289 | if (c->doc) free (c->doc); | |
2290 | ||
2291 | { | |
2292 | register struct command_line *cl1; | |
2293 | register int len = 0; | |
2294 | ||
2295 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2296 | len += strlen (cl1->line) + 1; | |
2297 | ||
2298 | c->doc = (char *) xmalloc (len + 1); | |
2299 | *c->doc = 0; | |
2300 | ||
2301 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
2302 | { | |
2303 | strcat (c->doc, cl1->line); | |
2304 | if (cl1->next) | |
2305 | strcat (c->doc, "\n"); | |
2306 | } | |
2307 | } | |
2308 | ||
2309 | free_command_lines (&doclines); | |
2310 | } | |
2311 | \f | |
2312 | static void | |
81066208 | 2313 | print_gnu_advertisement() |
bd5635a1 | 2314 | { |
199b2450 | 2315 | printf_unfiltered ("\ |
bd5635a1 | 2316 | GDB is free software and you are welcome to distribute copies of it\n\ |
afe4ca15 JG |
2317 | under certain conditions; type \"show copying\" to see the conditions.\n\ |
2318 | There is absolutely no warranty for GDB; type \"show warranty\" for details.\n\ | |
81066208 JG |
2319 | "); |
2320 | } | |
2321 | ||
2322 | static void | |
fb29d681 | 2323 | print_gdb_version (stream) |
199b2450 | 2324 | GDB_FILE *stream; |
81066208 | 2325 | { |
fb29d681 | 2326 | fprintf_filtered (stream, "\ |
a28d16d3 | 2327 | GDB %s (%s", version, host_name); |
57cb418a | 2328 | |
a28d16d3 JK |
2329 | if (!STREQ (host_name, target_name)) |
2330 | fprintf_filtered (stream, " --target %s", target_name); | |
57cb418a RP |
2331 | |
2332 | fprintf_filtered (stream, "), "); | |
2333 | wrap_here(""); | |
8b564df8 | 2334 | fprintf_filtered (stream, "Copyright 1994 Free Software Foundation, Inc."); |
bd5635a1 RP |
2335 | } |
2336 | ||
e1ce8aa5 | 2337 | /* ARGSUSED */ |
bd5635a1 | 2338 | static void |
f266e564 | 2339 | show_version (args, from_tty) |
bd5635a1 RP |
2340 | char *args; |
2341 | int from_tty; | |
2342 | { | |
2343 | immediate_quit++; | |
81066208 | 2344 | print_gnu_advertisement (); |
199b2450 | 2345 | print_gdb_version (gdb_stdout); |
81066208 | 2346 | printf_filtered ("\n"); |
bd5635a1 RP |
2347 | immediate_quit--; |
2348 | } | |
2349 | \f | |
6c803036 JK |
2350 | /* xgdb calls this to reprint the usual GDB prompt. Obsolete now that xgdb |
2351 | is obsolete. */ | |
bd5635a1 RP |
2352 | |
2353 | void | |
2354 | print_prompt () | |
2355 | { | |
199b2450 TL |
2356 | printf_unfiltered ("%s", prompt); |
2357 | gdb_flush (gdb_stdout); | |
bd5635a1 RP |
2358 | } |
2359 | \f | |
2360 | static void | |
2361 | quit_command (args, from_tty) | |
2362 | char *args; | |
2363 | int from_tty; | |
2364 | { | |
25200748 | 2365 | if (inferior_pid != 0 && target_has_execution) |
bd5635a1 | 2366 | { |
6fe90fc8 | 2367 | if (attach_flag) |
bd5635a1 | 2368 | { |
6fe90fc8 | 2369 | if (query ("The program is running. Quit anyway (and detach it)? ")) |
597dc86b SG |
2370 | target_detach (args, from_tty); |
2371 | else | |
6fe90fc8 | 2372 | error ("Not confirmed."); |
bd5635a1 RP |
2373 | } |
2374 | else | |
6fe90fc8 JK |
2375 | { |
2376 | if (query ("The program is running. Quit anyway (and kill it)? ")) | |
2377 | target_kill (); | |
2378 | else | |
2379 | error ("Not confirmed."); | |
2380 | } | |
bd5635a1 | 2381 | } |
1340861c KH |
2382 | /* UDI wants this, to kill the TIP. */ |
2383 | target_close (1); | |
2384 | ||
bd5635a1 RP |
2385 | /* Save the history information if it is appropriate to do so. */ |
2386 | if (write_history_p && history_filename) | |
2387 | write_history (history_filename); | |
1340861c | 2388 | |
bd5635a1 RP |
2389 | exit (0); |
2390 | } | |
2391 | ||
ee0613d1 JG |
2392 | /* Returns whether GDB is running on a terminal and whether the user |
2393 | desires that questions be asked of them on that terminal. */ | |
2394 | ||
bd5635a1 RP |
2395 | int |
2396 | input_from_terminal_p () | |
2397 | { | |
c307bb11 | 2398 | return gdb_has_a_terminal () && (instream == stdin) & caution; |
bd5635a1 RP |
2399 | } |
2400 | \f | |
e1ce8aa5 | 2401 | /* ARGSUSED */ |
bd5635a1 RP |
2402 | static void |
2403 | pwd_command (args, from_tty) | |
2404 | char *args; | |
2405 | int from_tty; | |
2406 | { | |
2407 | if (args) error ("The \"pwd\" command does not take an argument: %s", args); | |
f7402c04 | 2408 | getcwd (dirbuf, sizeof (dirbuf)); |
bd5635a1 | 2409 | |
2e4964ad | 2410 | if (!STREQ (dirbuf, current_directory)) |
199b2450 | 2411 | printf_unfiltered ("Working directory %s\n (canonically %s).\n", |
bd5635a1 RP |
2412 | current_directory, dirbuf); |
2413 | else | |
199b2450 | 2414 | printf_unfiltered ("Working directory %s.\n", current_directory); |
bd5635a1 RP |
2415 | } |
2416 | ||
2417 | static void | |
2418 | cd_command (dir, from_tty) | |
2419 | char *dir; | |
2420 | int from_tty; | |
2421 | { | |
2422 | int len; | |
c307bb11 JK |
2423 | /* Found something other than leading repetitions of "/..". */ |
2424 | int found_real_path; | |
2425 | char *p; | |
bd5635a1 | 2426 | |
9107291d JK |
2427 | /* If the new directory is absolute, repeat is a no-op; if relative, |
2428 | repeat might be useful but is more likely to be a mistake. */ | |
2429 | dont_repeat (); | |
2430 | ||
bd5635a1 RP |
2431 | if (dir == 0) |
2432 | error_no_arg ("new working directory"); | |
2433 | ||
2434 | dir = tilde_expand (dir); | |
2435 | make_cleanup (free, dir); | |
2436 | ||
ee0613d1 JG |
2437 | if (chdir (dir) < 0) |
2438 | perror_with_name (dir); | |
2439 | ||
bd5635a1 RP |
2440 | len = strlen (dir); |
2441 | dir = savestring (dir, len - (len > 1 && dir[len-1] == '/')); | |
2442 | if (dir[0] == '/') | |
2443 | current_directory = dir; | |
2444 | else | |
2445 | { | |
c307bb11 JK |
2446 | if (current_directory[0] == '/' && current_directory[1] == '\0') |
2447 | current_directory = concat (current_directory, dir, NULL); | |
2448 | else | |
2449 | current_directory = concat (current_directory, "/", dir, NULL); | |
bd5635a1 RP |
2450 | free (dir); |
2451 | } | |
2452 | ||
2453 | /* Now simplify any occurrences of `.' and `..' in the pathname. */ | |
2454 | ||
c307bb11 JK |
2455 | found_real_path = 0; |
2456 | for (p = current_directory; *p;) | |
bd5635a1 | 2457 | { |
c307bb11 JK |
2458 | if (p[0] == '/' && p[1] == '.' && (p[2] == 0 || p[2] == '/')) |
2459 | strcpy (p, p + 2); | |
2460 | else if (p[0] == '/' && p[1] == '.' && p[2] == '.' | |
2461 | && (p[3] == 0 || p[3] == '/')) | |
bd5635a1 | 2462 | { |
c307bb11 | 2463 | if (found_real_path) |
bd5635a1 | 2464 | { |
c307bb11 JK |
2465 | /* Search backwards for the directory just before the "/.." |
2466 | and obliterate it and the "/..". */ | |
bd5635a1 | 2467 | char *q = p; |
c307bb11 JK |
2468 | while (q != current_directory && q[-1] != '/') |
2469 | --q; | |
2470 | ||
2471 | if (q == current_directory) | |
2472 | /* current_directory is | |
2473 | a relative pathname ("can't happen"--leave it alone). */ | |
2474 | ++p; | |
2475 | else | |
bd5635a1 | 2476 | { |
c307bb11 JK |
2477 | strcpy (q - 1, p + 3); |
2478 | p = q - 1; | |
bd5635a1 RP |
2479 | } |
2480 | } | |
c307bb11 JK |
2481 | else |
2482 | /* We are dealing with leading repetitions of "/..", for example | |
2483 | "/../..", which is the Mach super-root. */ | |
2484 | p += 3; | |
2485 | } | |
2486 | else | |
2487 | { | |
2488 | found_real_path = 1; | |
2489 | ++p; | |
bd5635a1 RP |
2490 | } |
2491 | } | |
2492 | ||
bd5635a1 RP |
2493 | forget_cached_source_info (); |
2494 | ||
2495 | if (from_tty) | |
2496 | pwd_command ((char *) 0, 1); | |
2497 | } | |
2498 | \f | |
d6bbac39 JK |
2499 | struct source_cleanup_lines_args { |
2500 | int old_line; | |
2501 | char *old_file; | |
2502 | char *old_pre_error; | |
2503 | char *old_error_pre_print; | |
2504 | }; | |
2505 | ||
2506 | static void | |
2507 | source_cleanup_lines (args) | |
2508 | PTR args; | |
2509 | { | |
2510 | struct source_cleanup_lines_args *p = | |
2511 | (struct source_cleanup_lines_args *)args; | |
2512 | source_line_number = p->old_line; | |
2513 | source_file_name = p->old_file; | |
2514 | source_pre_error = p->old_pre_error; | |
2515 | error_pre_print = p->old_error_pre_print; | |
2516 | } | |
2517 | ||
e1ce8aa5 | 2518 | /* ARGSUSED */ |
bd5635a1 RP |
2519 | static void |
2520 | source_command (args, from_tty) | |
2521 | char *args; | |
2522 | int from_tty; | |
2523 | { | |
2524 | FILE *stream; | |
d6bbac39 | 2525 | struct cleanup *old_cleanups; |
bd5635a1 | 2526 | char *file = args; |
d6bbac39 JK |
2527 | struct source_cleanup_lines_args old_lines; |
2528 | int needed_length; | |
bd5635a1 | 2529 | |
6fe90fc8 JK |
2530 | if (file == NULL) |
2531 | { | |
2532 | error ("source command requires pathname of file to source."); | |
2533 | } | |
bd5635a1 RP |
2534 | |
2535 | file = tilde_expand (file); | |
d6bbac39 | 2536 | old_cleanups = make_cleanup (free, file); |
bd5635a1 | 2537 | |
6fe90fc8 | 2538 | stream = fopen (file, FOPEN_RT); |
bd5635a1 RP |
2539 | if (stream == 0) |
2540 | perror_with_name (file); | |
2541 | ||
d6bbac39 JK |
2542 | make_cleanup (fclose, stream); |
2543 | ||
2544 | old_lines.old_line = source_line_number; | |
2545 | old_lines.old_file = source_file_name; | |
2546 | old_lines.old_pre_error = source_pre_error; | |
2547 | old_lines.old_error_pre_print = error_pre_print; | |
2548 | make_cleanup (source_cleanup_lines, &old_lines); | |
2549 | source_line_number = 0; | |
2550 | source_file_name = file; | |
2551 | source_pre_error = error_pre_print == NULL ? "" : error_pre_print; | |
2552 | source_pre_error = savestring (source_pre_error, strlen (source_pre_error)); | |
2553 | make_cleanup (free, source_pre_error); | |
2554 | /* This will get set every time we read a line. So it won't stay "" for | |
2555 | long. */ | |
2556 | error_pre_print = ""; | |
2557 | ||
2558 | needed_length = strlen (source_file_name) + strlen (source_pre_error) + 80; | |
2559 | if (source_error_allocated < needed_length) | |
2560 | { | |
2561 | source_error_allocated *= 2; | |
2562 | if (source_error_allocated < needed_length) | |
2563 | source_error_allocated = needed_length; | |
2564 | if (source_error == NULL) | |
2565 | source_error = xmalloc (source_error_allocated); | |
2566 | else | |
2567 | source_error = xrealloc (source_error, source_error_allocated); | |
2568 | } | |
bd5635a1 RP |
2569 | |
2570 | read_command_file (stream); | |
2571 | ||
d6bbac39 | 2572 | do_cleanups (old_cleanups); |
bd5635a1 RP |
2573 | } |
2574 | ||
2575 | /* ARGSUSED */ | |
2576 | static void | |
2577 | echo_command (text, from_tty) | |
2578 | char *text; | |
2579 | int from_tty; | |
2580 | { | |
2581 | char *p = text; | |
2582 | register int c; | |
2583 | ||
2584 | if (text) | |
a8a69e63 | 2585 | while ((c = *p++) != '\0') |
bd5635a1 RP |
2586 | { |
2587 | if (c == '\\') | |
2588 | { | |
2589 | /* \ at end of argument is used after spaces | |
2590 | so they won't be lost. */ | |
2591 | if (*p == 0) | |
2592 | return; | |
2593 | ||
2594 | c = parse_escape (&p); | |
2595 | if (c >= 0) | |
afe4ca15 | 2596 | printf_filtered ("%c", c); |
bd5635a1 RP |
2597 | } |
2598 | else | |
afe4ca15 | 2599 | printf_filtered ("%c", c); |
bd5635a1 | 2600 | } |
afe4ca15 JG |
2601 | |
2602 | /* Force this output to appear now. */ | |
2603 | wrap_here (""); | |
199b2450 | 2604 | gdb_flush (gdb_stdout); |
bd5635a1 RP |
2605 | } |
2606 | ||
bd5635a1 RP |
2607 | \f |
2608 | /* Functions to manipulate command line editing control variables. */ | |
2609 | ||
f266e564 | 2610 | /* Number of commands to print in each call to show_commands. */ |
bd5635a1 RP |
2611 | #define Hist_print 10 |
2612 | static void | |
f266e564 | 2613 | show_commands (args, from_tty) |
bd5635a1 RP |
2614 | char *args; |
2615 | int from_tty; | |
2616 | { | |
2617 | /* Index for history commands. Relative to history_base. */ | |
2618 | int offset; | |
2619 | ||
2620 | /* Number of the history entry which we are planning to display next. | |
2621 | Relative to history_base. */ | |
2622 | static int num = 0; | |
2623 | ||
2624 | /* The first command in the history which doesn't exist (i.e. one more | |
2625 | than the number of the last command). Relative to history_base. */ | |
2626 | int hist_len; | |
2627 | ||
8b564df8 | 2628 | extern HIST_ENTRY *history_get PARAMS ((int)); |
bd5635a1 | 2629 | |
bd5635a1 RP |
2630 | /* Print out some of the commands from the command history. */ |
2631 | /* First determine the length of the history list. */ | |
2632 | hist_len = history_size; | |
2633 | for (offset = 0; offset < history_size; offset++) | |
2634 | { | |
2635 | if (!history_get (history_base + offset)) | |
2636 | { | |
2637 | hist_len = offset; | |
2638 | break; | |
2639 | } | |
2640 | } | |
2641 | ||
2642 | if (args) | |
2643 | { | |
2644 | if (args[0] == '+' && args[1] == '\0') | |
2645 | /* "info editing +" should print from the stored position. */ | |
2646 | ; | |
2647 | else | |
2648 | /* "info editing <exp>" should print around command number <exp>. */ | |
2649 | num = (parse_and_eval_address (args) - history_base) - Hist_print / 2; | |
2650 | } | |
ee0613d1 | 2651 | /* "show commands" means print the last Hist_print commands. */ |
bd5635a1 RP |
2652 | else |
2653 | { | |
2654 | num = hist_len - Hist_print; | |
2655 | } | |
2656 | ||
2657 | if (num < 0) | |
2658 | num = 0; | |
2659 | ||
2660 | /* If there are at least Hist_print commands, we want to display the last | |
2661 | Hist_print rather than, say, the last 6. */ | |
2662 | if (hist_len - num < Hist_print) | |
2663 | { | |
2664 | num = hist_len - Hist_print; | |
2665 | if (num < 0) | |
2666 | num = 0; | |
2667 | } | |
2668 | ||
bd5635a1 RP |
2669 | for (offset = num; offset < num + Hist_print && offset < hist_len; offset++) |
2670 | { | |
2671 | printf_filtered ("%5d %s\n", history_base + offset, | |
2672 | (history_get (history_base + offset))->line); | |
2673 | } | |
2674 | ||
2675 | /* The next command we want to display is the next one that we haven't | |
2676 | displayed yet. */ | |
2677 | num += Hist_print; | |
2678 | ||
2679 | /* If the user repeats this command with return, it should do what | |
ee0613d1 JG |
2680 | "show commands +" does. This is unnecessary if arg is null, |
2681 | because "show commands +" is not useful after "show commands". */ | |
bd5635a1 RP |
2682 | if (from_tty && args) |
2683 | { | |
2684 | args[0] = '+'; | |
2685 | args[1] = '\0'; | |
2686 | } | |
2687 | } | |
2688 | ||
2689 | /* Called by do_setshow_command. */ | |
e1ce8aa5 | 2690 | /* ARGSUSED */ |
bd5635a1 RP |
2691 | static void |
2692 | set_history_size_command (args, from_tty, c) | |
2693 | char *args; | |
2694 | int from_tty; | |
2695 | struct cmd_list_element *c; | |
2696 | { | |
6fe90fc8 | 2697 | if (history_size == INT_MAX) |
bd5635a1 | 2698 | unstifle_history (); |
c2e4669f | 2699 | else if (history_size >= 0) |
bd5635a1 | 2700 | stifle_history (history_size); |
c2e4669f JG |
2701 | else |
2702 | { | |
6fe90fc8 | 2703 | history_size = INT_MAX; |
c2e4669f JG |
2704 | error ("History size must be non-negative"); |
2705 | } | |
bd5635a1 RP |
2706 | } |
2707 | ||
e1ce8aa5 | 2708 | /* ARGSUSED */ |
bd5635a1 RP |
2709 | static void |
2710 | set_history (args, from_tty) | |
2711 | char *args; | |
2712 | int from_tty; | |
2713 | { | |
199b2450 TL |
2714 | printf_unfiltered ("\"set history\" must be followed by the name of a history subcommand.\n"); |
2715 | help_list (sethistlist, "set history ", -1, gdb_stdout); | |
bd5635a1 RP |
2716 | } |
2717 | ||
e1ce8aa5 | 2718 | /* ARGSUSED */ |
bd5635a1 RP |
2719 | static void |
2720 | show_history (args, from_tty) | |
2721 | char *args; | |
2722 | int from_tty; | |
2723 | { | |
f266e564 | 2724 | cmd_show_list (showhistlist, from_tty, ""); |
bd5635a1 RP |
2725 | } |
2726 | ||
2727 | int info_verbose = 0; /* Default verbose msgs off */ | |
2728 | ||
2729 | /* Called by do_setshow_command. An elaborate joke. */ | |
e1ce8aa5 | 2730 | /* ARGSUSED */ |
bd5635a1 RP |
2731 | static void |
2732 | set_verbose (args, from_tty, c) | |
2733 | char *args; | |
2734 | int from_tty; | |
2735 | struct cmd_list_element *c; | |
2736 | { | |
2737 | char *cmdname = "verbose"; | |
2738 | struct cmd_list_element *showcmd; | |
2739 | ||
2740 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
2741 | ||
2742 | if (info_verbose) | |
2743 | { | |
2744 | c->doc = "Set verbose printing of informational messages."; | |
2745 | showcmd->doc = "Show verbose printing of informational messages."; | |
2746 | } | |
2747 | else | |
2748 | { | |
2749 | c->doc = "Set verbosity."; | |
2750 | showcmd->doc = "Show verbosity."; | |
2751 | } | |
2752 | } | |
2753 | ||
2754 | static void | |
30875e1c SG |
2755 | float_handler (signo) |
2756 | int signo; | |
bd5635a1 RP |
2757 | { |
2758 | /* This message is based on ANSI C, section 4.7. Note that integer | |
2759 | divide by zero causes this, so "float" is a misnomer. */ | |
76a0ffb4 | 2760 | signal (SIGFPE, float_handler); |
bd5635a1 RP |
2761 | error ("Erroneous arithmetic operation."); |
2762 | } | |
2763 | ||
2764 | /* Return whether we are running a batch file or from terminal. */ | |
2765 | int | |
2766 | batch_mode () | |
2767 | { | |
2768 | return !(instream == stdin && ISATTY (stdin)); | |
2769 | } | |
2770 | ||
2771 | \f | |
2772 | static void | |
fc61e9ee | 2773 | init_cmd_lists () |
bd5635a1 | 2774 | { |
0239d9b3 FF |
2775 | cmdlist = NULL; |
2776 | infolist = NULL; | |
2777 | enablelist = NULL; | |
2778 | disablelist = NULL; | |
2779 | deletelist = NULL; | |
2780 | enablebreaklist = NULL; | |
2781 | setlist = NULL; | |
2782 | unsetlist = NULL; | |
bd5635a1 | 2783 | showlist = NULL; |
0239d9b3 | 2784 | sethistlist = NULL; |
bd5635a1 | 2785 | showhistlist = NULL; |
0239d9b3 FF |
2786 | unsethistlist = NULL; |
2787 | #if MAINTENANCE_CMDS | |
2788 | maintenancelist = NULL; | |
2789 | maintenanceinfolist = NULL; | |
a8e033f2 | 2790 | maintenanceprintlist = NULL; |
0239d9b3 FF |
2791 | #endif |
2792 | setprintlist = NULL; | |
2793 | showprintlist = NULL; | |
2794 | setchecklist = NULL; | |
2795 | showchecklist = NULL; | |
bd5635a1 RP |
2796 | } |
2797 | ||
8b3c897a SG |
2798 | /* Init the history buffer. Note that we are called after the init file(s) |
2799 | * have been read so that the user can change the history file via his | |
2800 | * .gdbinit file (for instance). The GDBHISTFILE environment variable | |
2801 | * overrides all of this. | |
2802 | */ | |
2803 | ||
bd5635a1 | 2804 | static void |
fc61e9ee | 2805 | init_history() |
bd5635a1 | 2806 | { |
bd5635a1 | 2807 | char *tmpenv; |
bd5635a1 | 2808 | |
318bf84f FF |
2809 | tmpenv = getenv ("HISTSIZE"); |
2810 | if (tmpenv) | |
bd5635a1 | 2811 | history_size = atoi (tmpenv); |
8b3c897a | 2812 | else if (!history_size) |
bd5635a1 RP |
2813 | history_size = 256; |
2814 | ||
2815 | stifle_history (history_size); | |
2816 | ||
318bf84f FF |
2817 | tmpenv = getenv ("GDBHISTFILE"); |
2818 | if (tmpenv) | |
bd5635a1 | 2819 | history_filename = savestring (tmpenv, strlen(tmpenv)); |
8b3c897a | 2820 | else if (!history_filename) { |
bd5635a1 RP |
2821 | /* We include the current directory so that if the user changes |
2822 | directories the file written will be the same as the one | |
2823 | that was read. */ | |
7d9884b9 | 2824 | history_filename = concat (current_directory, "/.gdb_history", NULL); |
8b3c897a | 2825 | } |
bd5635a1 | 2826 | read_history (history_filename); |
8b3c897a | 2827 | } |
bd5635a1 | 2828 | |
8b3c897a | 2829 | static void |
fc61e9ee | 2830 | init_main () |
8b3c897a SG |
2831 | { |
2832 | struct cmd_list_element *c; | |
2833 | ||
2834 | #ifdef DEFAULT_PROMPT | |
2835 | prompt = savestring (DEFAULT_PROMPT, strlen(DEFAULT_PROMPT)); | |
2836 | #else | |
2837 | prompt = savestring ("(gdb) ", 6); | |
2838 | #endif | |
2839 | ||
2840 | /* Set the important stuff up for command editing. */ | |
2841 | command_editing_p = 1; | |
2842 | history_expansion_p = 0; | |
2843 | write_history_p = 0; | |
2844 | ||
bd5635a1 RP |
2845 | /* Setup important stuff for command line editing. */ |
2846 | rl_completion_entry_function = (int (*)()) symbol_completion_function; | |
2847 | rl_completer_word_break_characters = gdb_completer_word_break_characters; | |
51b57ded | 2848 | rl_completer_quote_characters = gdb_completer_quote_characters; |
bd5635a1 RP |
2849 | rl_readline_name = "gdb"; |
2850 | ||
2851 | /* Define the classes of commands. | |
2852 | They will appear in the help list in the reverse of this order. */ | |
2853 | ||
0239d9b3 FF |
2854 | add_cmd ("internals", class_maintenance, NO_FUNCTION, |
2855 | "Maintenance commands.\n\ | |
2856 | Some gdb commands are provided just for use by gdb maintainers.\n\ | |
2857 | These commands are subject to frequent change, and may not be as\n\ | |
2858 | well documented as user commands.", | |
2859 | &cmdlist); | |
bd5635a1 RP |
2860 | add_cmd ("obscure", class_obscure, NO_FUNCTION, "Obscure features.", &cmdlist); |
2861 | add_cmd ("aliases", class_alias, NO_FUNCTION, "Aliases of other commands.", &cmdlist); | |
2862 | add_cmd ("user-defined", class_user, NO_FUNCTION, "User-defined commands.\n\ | |
2863 | The commands in this class are those defined by the user.\n\ | |
2864 | Use the \"define\" command to define a command.", &cmdlist); | |
2865 | add_cmd ("support", class_support, NO_FUNCTION, "Support facilities.", &cmdlist); | |
2866 | add_cmd ("status", class_info, NO_FUNCTION, "Status inquiries.", &cmdlist); | |
2867 | add_cmd ("files", class_files, NO_FUNCTION, "Specifying and examining files.", &cmdlist); | |
2868 | add_cmd ("breakpoints", class_breakpoint, NO_FUNCTION, "Making program stop at certain points.", &cmdlist); | |
2869 | add_cmd ("data", class_vars, NO_FUNCTION, "Examining data.", &cmdlist); | |
2870 | add_cmd ("stack", class_stack, NO_FUNCTION, "Examining the stack.\n\ | |
2871 | The stack is made up of stack frames. Gdb assigns numbers to stack frames\n\ | |
2872 | counting from zero for the innermost (currently executing) frame.\n\n\ | |
2873 | At any time gdb identifies one frame as the \"selected\" frame.\n\ | |
2874 | Variable lookups are done with respect to the selected frame.\n\ | |
2875 | When the program being debugged stops, gdb selects the innermost frame.\n\ | |
2876 | The commands below can be used to select other frames by number or address.", | |
2877 | &cmdlist); | |
2878 | add_cmd ("running", class_run, NO_FUNCTION, "Running the program.", &cmdlist); | |
2879 | ||
2880 | add_com ("pwd", class_files, pwd_command, | |
2881 | "Print working directory. This is used for your program as well."); | |
df0f0dcc | 2882 | c = add_cmd ("cd", class_files, cd_command, |
bd5635a1 RP |
2883 | "Set working directory to DIR for debugger and program being debugged.\n\ |
2884 | The change does not take effect for the program being debugged\n\ | |
df0f0dcc JK |
2885 | until the next time it is started.", &cmdlist); |
2886 | c->completer = filename_completer; | |
bd5635a1 RP |
2887 | |
2888 | add_show_from_set | |
2889 | (add_set_cmd ("prompt", class_support, var_string, (char *)&prompt, | |
2890 | "Set gdb's prompt", | |
2891 | &setlist), | |
2892 | &showlist); | |
2893 | ||
2894 | add_com ("echo", class_support, echo_command, | |
2895 | "Print a constant string. Give string as argument.\n\ | |
2896 | C escape sequences may be used in the argument.\n\ | |
2897 | No newline is added at the end of the argument;\n\ | |
2898 | use \"\\n\" if you want a newline to be printed.\n\ | |
2899 | Since leading and trailing whitespace are ignored in command arguments,\n\ | |
2900 | if you want to print some you must use \"\\\" before leading whitespace\n\ | |
2901 | to be printed or after trailing whitespace."); | |
2902 | add_com ("document", class_support, document_command, | |
2903 | "Document a user-defined command.\n\ | |
2904 | Give command name as argument. Give documentation on following lines.\n\ | |
2905 | End with a line of just \"end\"."); | |
2906 | add_com ("define", class_support, define_command, | |
2907 | "Define a new command name. Command name is argument.\n\ | |
2908 | Definition appears on following lines, one command per line.\n\ | |
2909 | End with a line of just \"end\".\n\ | |
2910 | Use the \"document\" command to give documentation for the new command.\n\ | |
2911 | Commands defined in this way do not take arguments."); | |
2912 | ||
2913 | #ifdef __STDC__ | |
df0f0dcc | 2914 | c = add_cmd ("source", class_support, source_command, |
bd5635a1 RP |
2915 | "Read commands from a file named FILE.\n\ |
2916 | Note that the file \"" GDBINIT_FILENAME "\" is read automatically in this way\n\ | |
df0f0dcc | 2917 | when gdb is started.", &cmdlist); |
bd5635a1 RP |
2918 | #else |
2919 | /* Punt file name, we can't help it easily. */ | |
df0f0dcc | 2920 | c = add_cmd ("source", class_support, source_command, |
bd5635a1 RP |
2921 | "Read commands from a file named FILE.\n\ |
2922 | Note that the file \".gdbinit\" is read automatically in this way\n\ | |
df0f0dcc | 2923 | when gdb is started.", &cmdlist); |
bd5635a1 | 2924 | #endif |
df0f0dcc | 2925 | c->completer = filename_completer; |
bd5635a1 RP |
2926 | |
2927 | add_com ("quit", class_support, quit_command, "Exit gdb."); | |
2928 | add_com ("help", class_support, help_command, "Print list of commands."); | |
2929 | add_com_alias ("q", "quit", class_support, 1); | |
2930 | add_com_alias ("h", "help", class_support, 1); | |
2931 | ||
2932 | ||
2933 | c = add_set_cmd ("verbose", class_support, var_boolean, (char *)&info_verbose, | |
2934 | "Set ", | |
2935 | &setlist), | |
2936 | add_show_from_set (c, &showlist); | |
30875e1c | 2937 | c->function.sfunc = set_verbose; |
bd5635a1 RP |
2938 | set_verbose (NULL, 0, c); |
2939 | ||
bd5635a1 RP |
2940 | add_show_from_set |
2941 | (add_set_cmd ("editing", class_support, var_boolean, (char *)&command_editing_p, | |
ee0613d1 | 2942 | "Set editing of command lines as they are typed.\n\ |
bd5635a1 | 2943 | Use \"on\" to enable to enable the editing, and \"off\" to disable it.\n\ |
ee0613d1 JG |
2944 | Without an argument, command line editing is enabled. To edit, use\n\ |
2945 | EMACS-like or VI-like commands like control-P or ESC.", &setlist), | |
bd5635a1 RP |
2946 | &showlist); |
2947 | ||
2948 | add_prefix_cmd ("history", class_support, set_history, | |
2949 | "Generic command for setting command history parameters.", | |
2950 | &sethistlist, "set history ", 0, &setlist); | |
2951 | add_prefix_cmd ("history", class_support, show_history, | |
2952 | "Generic command for showing command history parameters.", | |
2953 | &showhistlist, "show history ", 0, &showlist); | |
2954 | ||
2955 | add_show_from_set | |
2956 | (add_set_cmd ("expansion", no_class, var_boolean, (char *)&history_expansion_p, | |
2957 | "Set history expansion on command input.\n\ | |
2958 | Without an argument, history expansion is enabled.", &sethistlist), | |
2959 | &showhistlist); | |
2960 | ||
2961 | add_show_from_set | |
f266e564 | 2962 | (add_set_cmd ("save", no_class, var_boolean, (char *)&write_history_p, |
bd5635a1 RP |
2963 | "Set saving of the history record on exit.\n\ |
2964 | Use \"on\" to enable to enable the saving, and \"off\" to disable it.\n\ | |
2965 | Without an argument, saving is enabled.", &sethistlist), | |
2966 | &showhistlist); | |
2967 | ||
6fe90fc8 | 2968 | c = add_set_cmd ("size", no_class, var_integer, (char *)&history_size, |
bd5635a1 RP |
2969 | "Set the size of the command history, \n\ |
2970 | ie. the number of previous commands to keep a record of.", &sethistlist); | |
2971 | add_show_from_set (c, &showhistlist); | |
30875e1c | 2972 | c->function.sfunc = set_history_size_command; |
bd5635a1 RP |
2973 | |
2974 | add_show_from_set | |
2975 | (add_set_cmd ("filename", no_class, var_filename, (char *)&history_filename, | |
2976 | "Set the filename in which to record the command history\n\ | |
2977 | (the list of previous commands of which a record is kept).", &sethistlist), | |
2978 | &showhistlist); | |
2979 | ||
2980 | add_show_from_set | |
f266e564 | 2981 | (add_set_cmd ("confirm", class_support, var_boolean, |
bd5635a1 | 2982 | (char *)&caution, |
f266e564 JK |
2983 | "Set whether to confirm potentially dangerous operations.", |
2984 | &setlist), | |
bd5635a1 RP |
2985 | &showlist); |
2986 | ||
2987 | add_prefix_cmd ("info", class_info, info_command, | |
ee0613d1 | 2988 | "Generic command for showing things about the program being debugged.", |
bd5635a1 RP |
2989 | &infolist, "info ", 0, &cmdlist); |
2990 | add_com_alias ("i", "info", class_info, 1); | |
2991 | ||
09973223 JK |
2992 | add_com ("complete", class_obscure, complete_command, |
2993 | "List the completions for the rest of the line as a command."); | |
2994 | ||
bd5635a1 | 2995 | add_prefix_cmd ("show", class_info, show_command, |
ee0613d1 | 2996 | "Generic command for showing things about the debugger.", |
bd5635a1 RP |
2997 | &showlist, "show ", 0, &cmdlist); |
2998 | /* Another way to get at the same thing. */ | |
2999 | add_info ("set", show_command, "Show all GDB settings."); | |
3000 | ||
ee0613d1 JG |
3001 | add_cmd ("commands", no_class, show_commands, |
3002 | "Show the the history of commands you typed.\n\ | |
3003 | You can supply a command number to start with, or a `+' to start after\n\ | |
3004 | the previous command number shown.", | |
f266e564 | 3005 | &showlist); |
bd5635a1 | 3006 | |
f266e564 | 3007 | add_cmd ("version", no_class, show_version, |
ee0613d1 | 3008 | "Show what version of GDB this is.", &showlist); |
d0d8484a | 3009 | |
199b2450 TL |
3010 | /* If target is open when baud changes, it doesn't take effect until the |
3011 | next open (I think, not sure). */ | |
3012 | add_show_from_set (add_set_cmd ("remotebaud", no_class, | |
3013 | var_zinteger, (char *)&baud_rate, | |
3014 | "Set baud rate for remote serial I/O.\n\ | |
3015 | This value is used to set the speed of the serial port when debugging\n\ | |
3016 | using remote targets.", &setlist), | |
3017 | &showlist); | |
3018 | ||
d0d8484a | 3019 | add_show_from_set ( |
d6bbac39 | 3020 | add_set_cmd ("remotedebug", no_class, var_zinteger, (char *)&remote_debug, |
d0d8484a SG |
3021 | "Set debugging of remote protocol.\n\ |
3022 | When enabled, each packet sent or received with the remote target\n\ | |
3023 | is displayed.", &setlist), | |
3024 | &showlist); | |
bd5635a1 | 3025 | } |