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1 | /* Top level stuff for GDB, the GNU debugger. | |
2 | ||
3 | Copyright (C) 1986-2013 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
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 | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
20 | #include "defs.h" | |
21 | #include "gdbcmd.h" | |
22 | #include "cli/cli-cmds.h" | |
23 | #include "cli/cli-script.h" | |
24 | #include "cli/cli-setshow.h" | |
25 | #include "cli/cli-decode.h" | |
26 | #include "symtab.h" | |
27 | #include "inferior.h" | |
28 | #include "exceptions.h" | |
29 | #include <signal.h> | |
30 | #include "target.h" | |
31 | #include "breakpoint.h" | |
32 | #include "gdbtypes.h" | |
33 | #include "expression.h" | |
34 | #include "value.h" | |
35 | #include "language.h" | |
36 | #include "terminal.h" /* For job_control. */ | |
37 | #include "annotate.h" | |
38 | #include "completer.h" | |
39 | #include "top.h" | |
40 | #include "version.h" | |
41 | #include "serial.h" | |
42 | #include "doublest.h" | |
43 | #include "gdb_assert.h" | |
44 | #include "main.h" | |
45 | #include "event-loop.h" | |
46 | #include "gdbthread.h" | |
47 | #include "python/python.h" | |
48 | #include "interps.h" | |
49 | #include "observer.h" | |
50 | #include "maint.h" | |
51 | ||
52 | /* readline include files. */ | |
53 | #include "readline/readline.h" | |
54 | #include "readline/history.h" | |
55 | ||
56 | /* readline defines this. */ | |
57 | #undef savestring | |
58 | ||
59 | #include <sys/types.h> | |
60 | ||
61 | #include "event-top.h" | |
62 | #include "gdb_string.h" | |
63 | #include "gdb_stat.h" | |
64 | #include <ctype.h> | |
65 | #include "ui-out.h" | |
66 | #include "cli-out.h" | |
67 | #include "tracepoint.h" | |
68 | ||
69 | extern void initialize_all_files (void); | |
70 | ||
71 | #define PROMPT(X) the_prompts.prompt_stack[the_prompts.top + X].prompt | |
72 | #define PREFIX(X) the_prompts.prompt_stack[the_prompts.top + X].prefix | |
73 | #define SUFFIX(X) the_prompts.prompt_stack[the_prompts.top + X].suffix | |
74 | ||
75 | /* Default command line prompt. This is overriden in some configs. */ | |
76 | ||
77 | #ifndef DEFAULT_PROMPT | |
78 | #define DEFAULT_PROMPT "(gdb) " | |
79 | #endif | |
80 | ||
81 | /* Initialization file name for gdb. This is overridden in some configs. */ | |
82 | ||
83 | #ifndef PATH_MAX | |
84 | # ifdef FILENAME_MAX | |
85 | # define PATH_MAX FILENAME_MAX | |
86 | # else | |
87 | # define PATH_MAX 512 | |
88 | # endif | |
89 | #endif | |
90 | ||
91 | #ifndef GDBINIT_FILENAME | |
92 | #define GDBINIT_FILENAME ".gdbinit" | |
93 | #endif | |
94 | char gdbinit[PATH_MAX + 1] = GDBINIT_FILENAME; | |
95 | ||
96 | int inhibit_gdbinit = 0; | |
97 | ||
98 | /* If nonzero, and GDB has been configured to be able to use windows, | |
99 | attempt to open them upon startup. */ | |
100 | ||
101 | int use_windows = 0; | |
102 | ||
103 | extern char lang_frame_mismatch_warn[]; /* language.c */ | |
104 | ||
105 | /* Flag for whether we want to confirm potentially dangerous | |
106 | operations. Default is yes. */ | |
107 | ||
108 | int confirm = 1; | |
109 | ||
110 | static void | |
111 | show_confirm (struct ui_file *file, int from_tty, | |
112 | struct cmd_list_element *c, const char *value) | |
113 | { | |
114 | fprintf_filtered (file, _("Whether to confirm potentially " | |
115 | "dangerous operations is %s.\n"), | |
116 | value); | |
117 | } | |
118 | ||
119 | /* stdio stream that command input is being read from. Set to stdin | |
120 | normally. Set by source_command to the file we are sourcing. Set | |
121 | to NULL if we are executing a user-defined command or interacting | |
122 | via a GUI. */ | |
123 | ||
124 | FILE *instream; | |
125 | ||
126 | /* Flag to indicate whether a user defined command is currently running. */ | |
127 | ||
128 | int in_user_command; | |
129 | ||
130 | /* Current working directory. */ | |
131 | ||
132 | char *current_directory; | |
133 | ||
134 | /* The directory name is actually stored here (usually). */ | |
135 | char gdb_dirbuf[1024]; | |
136 | ||
137 | /* Function to call before reading a command, if nonzero. | |
138 | The function receives two args: an input stream, | |
139 | and a prompt string. */ | |
140 | ||
141 | void (*window_hook) (FILE *, char *); | |
142 | ||
143 | /* Buffer used for reading command lines, and the size | |
144 | allocated for it so far. */ | |
145 | ||
146 | char *saved_command_line; | |
147 | int saved_command_line_size = 100; | |
148 | ||
149 | /* Nonzero if the current command is modified by "server ". This | |
150 | affects things like recording into the command history, commands | |
151 | repeating on RETURN, etc. This is so a user interface (emacs, GUI, | |
152 | whatever) can issue its own commands and also send along commands | |
153 | from the user, and have the user not notice that the user interface | |
154 | is issuing commands too. */ | |
155 | int server_command; | |
156 | ||
157 | /* Baud rate specified for talking to serial target systems. Default | |
158 | is left as -1, so targets can choose their own defaults. */ | |
159 | /* FIXME: This means that "show remotebaud" and gr_files_info can | |
160 | print -1 or (unsigned int)-1. This is a Bad User Interface. */ | |
161 | ||
162 | int baud_rate = -1; | |
163 | ||
164 | /* Timeout limit for response from target. */ | |
165 | ||
166 | /* The default value has been changed many times over the years. It | |
167 | was originally 5 seconds. But that was thought to be a long time | |
168 | to sit and wait, so it was changed to 2 seconds. That was thought | |
169 | to be plenty unless the connection was going through some terminal | |
170 | server or multiplexer or other form of hairy serial connection. | |
171 | ||
172 | In mid-1996, remote_timeout was moved from remote.c to top.c and | |
173 | it began being used in other remote-* targets. It appears that the | |
174 | default was changed to 20 seconds at that time, perhaps because the | |
175 | Renesas E7000 ICE didn't always respond in a timely manner. | |
176 | ||
177 | But if 5 seconds is a long time to sit and wait for retransmissions, | |
178 | 20 seconds is far worse. This demonstrates the difficulty of using | |
179 | a single variable for all protocol timeouts. | |
180 | ||
181 | As remote.c is used much more than remote-e7000.c, it was changed | |
182 | back to 2 seconds in 1999. */ | |
183 | ||
184 | int remote_timeout = 2; | |
185 | ||
186 | /* Non-zero tells remote* modules to output debugging info. */ | |
187 | ||
188 | int remote_debug = 0; | |
189 | ||
190 | /* Sbrk location on entry to main. Used for statistics only. */ | |
191 | #ifdef HAVE_SBRK | |
192 | char *lim_at_start; | |
193 | #endif | |
194 | ||
195 | /* Hooks for alternate command interfaces. */ | |
196 | ||
197 | /* Called after most modules have been initialized, but before taking | |
198 | users command file. | |
199 | ||
200 | If the UI fails to initialize and it wants GDB to continue using | |
201 | the default UI, then it should clear this hook before returning. */ | |
202 | ||
203 | void (*deprecated_init_ui_hook) (char *argv0); | |
204 | ||
205 | /* This hook is called from within gdb's many mini-event loops which | |
206 | could steal control from a real user interface's event loop. It | |
207 | returns non-zero if the user is requesting a detach, zero | |
208 | otherwise. */ | |
209 | ||
210 | int (*deprecated_ui_loop_hook) (int); | |
211 | ||
212 | /* Called instead of command_loop at top level. Can be invoked via | |
213 | throw_exception(). */ | |
214 | ||
215 | void (*deprecated_command_loop_hook) (void); | |
216 | ||
217 | ||
218 | /* Called from print_frame_info to list the line we stopped in. */ | |
219 | ||
220 | void (*deprecated_print_frame_info_listing_hook) (struct symtab * s, | |
221 | int line, | |
222 | int stopline, | |
223 | int noerror); | |
224 | /* Replaces most of query. */ | |
225 | ||
226 | int (*deprecated_query_hook) (const char *, va_list); | |
227 | ||
228 | /* Replaces most of warning. */ | |
229 | ||
230 | void (*deprecated_warning_hook) (const char *, va_list); | |
231 | ||
232 | /* These three functions support getting lines of text from the user. | |
233 | They are used in sequence. First deprecated_readline_begin_hook is | |
234 | called with a text string that might be (for example) a message for | |
235 | the user to type in a sequence of commands to be executed at a | |
236 | breakpoint. If this function calls back to a GUI, it might take | |
237 | this opportunity to pop up a text interaction window with this | |
238 | message. Next, deprecated_readline_hook is called with a prompt | |
239 | that is emitted prior to collecting the user input. It can be | |
240 | called multiple times. Finally, deprecated_readline_end_hook is | |
241 | called to notify the GUI that we are done with the interaction | |
242 | window and it can close it. */ | |
243 | ||
244 | void (*deprecated_readline_begin_hook) (char *, ...); | |
245 | char *(*deprecated_readline_hook) (char *); | |
246 | void (*deprecated_readline_end_hook) (void); | |
247 | ||
248 | /* Called as appropriate to notify the interface that we have attached | |
249 | to or detached from an already running process. */ | |
250 | ||
251 | void (*deprecated_attach_hook) (void); | |
252 | void (*deprecated_detach_hook) (void); | |
253 | ||
254 | /* Called during long calculations to allow GUI to repair window | |
255 | damage, and to check for stop buttons, etc... */ | |
256 | ||
257 | void (*deprecated_interactive_hook) (void); | |
258 | ||
259 | /* Tell the GUI someone changed the register REGNO. -1 means | |
260 | that the caller does not know which register changed or | |
261 | that several registers have changed (see value_assign). */ | |
262 | void (*deprecated_register_changed_hook) (int regno); | |
263 | ||
264 | /* Called when going to wait for the target. Usually allows the GUI | |
265 | to run while waiting for target events. */ | |
266 | ||
267 | ptid_t (*deprecated_target_wait_hook) (ptid_t ptid, | |
268 | struct target_waitstatus *status, | |
269 | int options); | |
270 | ||
271 | /* Used by UI as a wrapper around command execution. May do various | |
272 | things like enabling/disabling buttons, etc... */ | |
273 | ||
274 | void (*deprecated_call_command_hook) (struct cmd_list_element * c, | |
275 | char *cmd, int from_tty); | |
276 | ||
277 | /* Called after a `set' command has finished. Is only run if the | |
278 | `set' command succeeded. */ | |
279 | ||
280 | void (*deprecated_set_hook) (struct cmd_list_element * c); | |
281 | ||
282 | /* Called when the current thread changes. Argument is thread id. */ | |
283 | ||
284 | void (*deprecated_context_hook) (int id); | |
285 | ||
286 | /* Handler for SIGHUP. */ | |
287 | ||
288 | #ifdef SIGHUP | |
289 | /* NOTE 1999-04-29: This function will be static again, once we modify | |
290 | gdb to use the event loop as the default command loop and we merge | |
291 | event-top.c into this file, top.c. */ | |
292 | /* static */ void | |
293 | quit_cover (void) | |
294 | { | |
295 | /* Stop asking user for confirmation --- we're exiting. This | |
296 | prevents asking the user dumb questions. */ | |
297 | confirm = 0; | |
298 | quit_command ((char *) 0, 0); | |
299 | } | |
300 | #endif /* defined SIGHUP */ | |
301 | \f | |
302 | /* Line number we are currently in, in a file which is being sourced. */ | |
303 | /* NOTE 1999-04-29: This variable will be static again, once we modify | |
304 | gdb to use the event loop as the default command loop and we merge | |
305 | event-top.c into this file, top.c. */ | |
306 | /* static */ int source_line_number; | |
307 | ||
308 | /* Name of the file we are sourcing. */ | |
309 | /* NOTE 1999-04-29: This variable will be static again, once we modify | |
310 | gdb to use the event loop as the default command loop and we merge | |
311 | event-top.c into this file, top.c. */ | |
312 | /* static */ const char *source_file_name; | |
313 | ||
314 | /* Clean up on error during a "source" command (or execution of a | |
315 | user-defined command). */ | |
316 | ||
317 | void | |
318 | do_restore_instream_cleanup (void *stream) | |
319 | { | |
320 | /* Restore the previous input stream. */ | |
321 | instream = stream; | |
322 | } | |
323 | ||
324 | /* Read commands from STREAM. */ | |
325 | void | |
326 | read_command_file (FILE *stream) | |
327 | { | |
328 | struct cleanup *cleanups; | |
329 | ||
330 | cleanups = make_cleanup (do_restore_instream_cleanup, instream); | |
331 | instream = stream; | |
332 | command_loop (); | |
333 | do_cleanups (cleanups); | |
334 | } | |
335 | \f | |
336 | void (*pre_init_ui_hook) (void); | |
337 | ||
338 | #ifdef __MSDOS__ | |
339 | static void | |
340 | do_chdir_cleanup (void *old_dir) | |
341 | { | |
342 | chdir (old_dir); | |
343 | xfree (old_dir); | |
344 | } | |
345 | #endif | |
346 | ||
347 | struct cleanup * | |
348 | prepare_execute_command (void) | |
349 | { | |
350 | struct value *mark; | |
351 | struct cleanup *cleanup; | |
352 | ||
353 | mark = value_mark (); | |
354 | cleanup = make_cleanup_value_free_to_mark (mark); | |
355 | ||
356 | /* With multiple threads running while the one we're examining is | |
357 | stopped, the dcache can get stale without us being able to detect | |
358 | it. For the duration of the command, though, use the dcache to | |
359 | help things like backtrace. */ | |
360 | if (non_stop) | |
361 | target_dcache_invalidate (); | |
362 | ||
363 | return cleanup; | |
364 | } | |
365 | ||
366 | /* Tell the user if the language has changed (except first time) after | |
367 | executing a command. */ | |
368 | ||
369 | void | |
370 | check_frame_language_change (void) | |
371 | { | |
372 | static int warned = 0; | |
373 | ||
374 | /* First make sure that a new frame has been selected, in case the | |
375 | command or the hooks changed the program state. */ | |
376 | deprecated_safe_get_selected_frame (); | |
377 | if (current_language != expected_language) | |
378 | { | |
379 | if (language_mode == language_mode_auto && info_verbose) | |
380 | { | |
381 | language_info (1); /* Print what changed. */ | |
382 | } | |
383 | warned = 0; | |
384 | } | |
385 | ||
386 | /* Warn the user if the working language does not match the language | |
387 | of the current frame. Only warn the user if we are actually | |
388 | running the program, i.e. there is a stack. */ | |
389 | /* FIXME: This should be cacheing the frame and only running when | |
390 | the frame changes. */ | |
391 | ||
392 | if (has_stack_frames ()) | |
393 | { | |
394 | enum language flang; | |
395 | ||
396 | flang = get_frame_language (); | |
397 | if (!warned | |
398 | && flang != language_unknown | |
399 | && flang != current_language->la_language) | |
400 | { | |
401 | printf_filtered ("%s\n", lang_frame_mismatch_warn); | |
402 | warned = 1; | |
403 | } | |
404 | } | |
405 | } | |
406 | ||
407 | /* Execute the line P as a command, in the current user context. | |
408 | Pass FROM_TTY as second argument to the defining function. */ | |
409 | ||
410 | void | |
411 | execute_command (char *p, int from_tty) | |
412 | { | |
413 | struct cleanup *cleanup_if_error, *cleanup; | |
414 | struct cmd_list_element *c; | |
415 | char *line; | |
416 | ||
417 | cleanup_if_error = make_bpstat_clear_actions_cleanup (); | |
418 | cleanup = prepare_execute_command (); | |
419 | ||
420 | /* Force cleanup of any alloca areas if using C alloca instead of | |
421 | a builtin alloca. */ | |
422 | alloca (0); | |
423 | ||
424 | /* This can happen when command_line_input hits end of file. */ | |
425 | if (p == NULL) | |
426 | { | |
427 | do_cleanups (cleanup); | |
428 | discard_cleanups (cleanup_if_error); | |
429 | return; | |
430 | } | |
431 | ||
432 | target_log_command (p); | |
433 | ||
434 | while (*p == ' ' || *p == '\t') | |
435 | p++; | |
436 | if (*p) | |
437 | { | |
438 | const char *cmd = p; | |
439 | char *arg; | |
440 | line = p; | |
441 | ||
442 | /* If trace-commands is set then this will print this command. */ | |
443 | print_command_trace (p); | |
444 | ||
445 | c = lookup_cmd (&cmd, cmdlist, "", 0, 1); | |
446 | p = (char *) cmd; | |
447 | ||
448 | /* Pass null arg rather than an empty one. */ | |
449 | arg = *p ? p : 0; | |
450 | ||
451 | /* FIXME: cagney/2002-02-02: The c->type test is pretty dodgy | |
452 | while the is_complete_command(cfunc) test is just plain | |
453 | bogus. They should both be replaced by a test of the form | |
454 | c->strip_trailing_white_space_p. */ | |
455 | /* NOTE: cagney/2002-02-02: The function.cfunc in the below | |
456 | can't be replaced with func. This is because it is the | |
457 | cfunc, and not the func, that has the value that the | |
458 | is_complete_command hack is testing for. */ | |
459 | /* Clear off trailing whitespace, except for set and complete | |
460 | command. */ | |
461 | if (arg | |
462 | && c->type != set_cmd | |
463 | && !is_complete_command (c)) | |
464 | { | |
465 | p = arg + strlen (arg) - 1; | |
466 | while (p >= arg && (*p == ' ' || *p == '\t')) | |
467 | p--; | |
468 | *(p + 1) = '\0'; | |
469 | } | |
470 | ||
471 | /* If this command has been pre-hooked, run the hook first. */ | |
472 | execute_cmd_pre_hook (c); | |
473 | ||
474 | if (c->flags & DEPRECATED_WARN_USER) | |
475 | deprecated_cmd_warning (line); | |
476 | ||
477 | /* c->user_commands would be NULL in the case of a python command. */ | |
478 | if (c->class == class_user && c->user_commands) | |
479 | execute_user_command (c, arg); | |
480 | else if (c->type == set_cmd) | |
481 | do_set_command (arg, from_tty, c); | |
482 | else if (c->type == show_cmd) | |
483 | do_show_command (arg, from_tty, c); | |
484 | else if (!cmd_func_p (c)) | |
485 | error (_("That is not a command, just a help topic.")); | |
486 | else if (deprecated_call_command_hook) | |
487 | deprecated_call_command_hook (c, arg, from_tty); | |
488 | else | |
489 | cmd_func (c, arg, from_tty); | |
490 | ||
491 | /* If the interpreter is in sync mode (we're running a user | |
492 | command's list, running command hooks or similars), and we | |
493 | just ran a synchronous command that started the target, wait | |
494 | for that command to end. */ | |
495 | if (!interpreter_async && sync_execution) | |
496 | { | |
497 | while (gdb_do_one_event () >= 0) | |
498 | if (!sync_execution) | |
499 | break; | |
500 | } | |
501 | ||
502 | /* If this command has been post-hooked, run the hook last. */ | |
503 | execute_cmd_post_hook (c); | |
504 | ||
505 | } | |
506 | ||
507 | check_frame_language_change (); | |
508 | ||
509 | do_cleanups (cleanup); | |
510 | discard_cleanups (cleanup_if_error); | |
511 | } | |
512 | ||
513 | /* Run execute_command for P and FROM_TTY. Capture its output into the | |
514 | returned string, do not display it to the screen. BATCH_FLAG will be | |
515 | temporarily set to true. */ | |
516 | ||
517 | char * | |
518 | execute_command_to_string (char *p, int from_tty) | |
519 | { | |
520 | struct ui_file *str_file; | |
521 | struct cleanup *cleanup; | |
522 | char *retval; | |
523 | ||
524 | /* GDB_STDOUT should be better already restored during these | |
525 | restoration callbacks. */ | |
526 | cleanup = set_batch_flag_and_make_cleanup_restore_page_info (); | |
527 | ||
528 | make_cleanup_restore_integer (&interpreter_async); | |
529 | interpreter_async = 0; | |
530 | ||
531 | str_file = mem_fileopen (); | |
532 | ||
533 | make_cleanup_ui_file_delete (str_file); | |
534 | make_cleanup_restore_ui_file (&gdb_stdout); | |
535 | make_cleanup_restore_ui_file (&gdb_stderr); | |
536 | make_cleanup_restore_ui_file (&gdb_stdlog); | |
537 | make_cleanup_restore_ui_file (&gdb_stdtarg); | |
538 | make_cleanup_restore_ui_file (&gdb_stdtargerr); | |
539 | ||
540 | if (ui_out_redirect (current_uiout, str_file) < 0) | |
541 | warning (_("Current output protocol does not support redirection")); | |
542 | else | |
543 | make_cleanup_ui_out_redirect_pop (current_uiout); | |
544 | ||
545 | gdb_stdout = str_file; | |
546 | gdb_stderr = str_file; | |
547 | gdb_stdlog = str_file; | |
548 | gdb_stdtarg = str_file; | |
549 | gdb_stdtargerr = str_file; | |
550 | ||
551 | execute_command (p, from_tty); | |
552 | ||
553 | retval = ui_file_xstrdup (str_file, NULL); | |
554 | ||
555 | do_cleanups (cleanup); | |
556 | ||
557 | return retval; | |
558 | } | |
559 | ||
560 | /* Read commands from `instream' and execute them | |
561 | until end of file or error reading instream. */ | |
562 | ||
563 | void | |
564 | command_loop (void) | |
565 | { | |
566 | struct cleanup *old_chain; | |
567 | char *command; | |
568 | int stdin_is_tty = ISATTY (stdin); | |
569 | ||
570 | while (instream && !feof (instream)) | |
571 | { | |
572 | if (window_hook && instream == stdin) | |
573 | (*window_hook) (instream, get_prompt ()); | |
574 | ||
575 | clear_quit_flag (); | |
576 | if (instream == stdin && stdin_is_tty) | |
577 | reinitialize_more_filter (); | |
578 | old_chain = make_cleanup (null_cleanup, 0); | |
579 | ||
580 | /* Get a command-line. This calls the readline package. */ | |
581 | command = command_line_input (instream == stdin ? | |
582 | get_prompt () : (char *) NULL, | |
583 | instream == stdin, "prompt"); | |
584 | if (command == 0) | |
585 | { | |
586 | do_cleanups (old_chain); | |
587 | return; | |
588 | } | |
589 | ||
590 | make_command_stats_cleanup (1); | |
591 | ||
592 | execute_command (command, instream == stdin); | |
593 | ||
594 | /* Do any commands attached to breakpoint we are stopped at. */ | |
595 | bpstat_do_actions (); | |
596 | ||
597 | do_cleanups (old_chain); | |
598 | } | |
599 | } | |
600 | \f | |
601 | /* When nonzero, cause dont_repeat to do nothing. This should only be | |
602 | set via prevent_dont_repeat. */ | |
603 | ||
604 | static int suppress_dont_repeat = 0; | |
605 | ||
606 | /* Commands call this if they do not want to be repeated by null lines. */ | |
607 | ||
608 | void | |
609 | dont_repeat (void) | |
610 | { | |
611 | if (suppress_dont_repeat || server_command) | |
612 | return; | |
613 | ||
614 | /* If we aren't reading from standard input, we are saving the last | |
615 | thing read from stdin in line and don't want to delete it. Null | |
616 | lines won't repeat here in any case. */ | |
617 | if (instream == stdin) | |
618 | *saved_command_line = 0; | |
619 | } | |
620 | ||
621 | /* Prevent dont_repeat from working, and return a cleanup that | |
622 | restores the previous state. */ | |
623 | ||
624 | struct cleanup * | |
625 | prevent_dont_repeat (void) | |
626 | { | |
627 | struct cleanup *result = make_cleanup_restore_integer (&suppress_dont_repeat); | |
628 | ||
629 | suppress_dont_repeat = 1; | |
630 | return result; | |
631 | } | |
632 | ||
633 | \f | |
634 | /* Read a line from the stream "instream" without command line editing. | |
635 | ||
636 | It prints PROMPT_ARG once at the start. | |
637 | Action is compatible with "readline", e.g. space for the result is | |
638 | malloc'd and should be freed by the caller. | |
639 | ||
640 | A NULL return means end of file. */ | |
641 | char * | |
642 | gdb_readline (char *prompt_arg) | |
643 | { | |
644 | int c; | |
645 | char *result; | |
646 | int input_index = 0; | |
647 | int result_size = 80; | |
648 | ||
649 | if (prompt_arg) | |
650 | { | |
651 | /* Don't use a _filtered function here. It causes the assumed | |
652 | character position to be off, since the newline we read from | |
653 | the user is not accounted for. */ | |
654 | fputs_unfiltered (prompt_arg, gdb_stdout); | |
655 | gdb_flush (gdb_stdout); | |
656 | } | |
657 | ||
658 | result = (char *) xmalloc (result_size); | |
659 | ||
660 | while (1) | |
661 | { | |
662 | /* Read from stdin if we are executing a user defined command. | |
663 | This is the right thing for prompt_for_continue, at least. */ | |
664 | c = fgetc (instream ? instream : stdin); | |
665 | ||
666 | if (c == EOF) | |
667 | { | |
668 | if (input_index > 0) | |
669 | /* The last line does not end with a newline. Return it, and | |
670 | if we are called again fgetc will still return EOF and | |
671 | we'll return NULL then. */ | |
672 | break; | |
673 | xfree (result); | |
674 | return NULL; | |
675 | } | |
676 | ||
677 | if (c == '\n') | |
678 | { | |
679 | if (input_index > 0 && result[input_index - 1] == '\r') | |
680 | input_index--; | |
681 | break; | |
682 | } | |
683 | ||
684 | result[input_index++] = c; | |
685 | while (input_index >= result_size) | |
686 | { | |
687 | result_size *= 2; | |
688 | result = (char *) xrealloc (result, result_size); | |
689 | } | |
690 | } | |
691 | ||
692 | result[input_index++] = '\0'; | |
693 | return result; | |
694 | } | |
695 | ||
696 | /* Variables which control command line editing and history | |
697 | substitution. These variables are given default values at the end | |
698 | of this file. */ | |
699 | static int command_editing_p; | |
700 | ||
701 | /* NOTE 1999-04-29: This variable will be static again, once we modify | |
702 | gdb to use the event loop as the default command loop and we merge | |
703 | event-top.c into this file, top.c. */ | |
704 | ||
705 | /* static */ int history_expansion_p; | |
706 | ||
707 | static int write_history_p; | |
708 | static void | |
709 | show_write_history_p (struct ui_file *file, int from_tty, | |
710 | struct cmd_list_element *c, const char *value) | |
711 | { | |
712 | fprintf_filtered (file, _("Saving of the history record on exit is %s.\n"), | |
713 | value); | |
714 | } | |
715 | ||
716 | /* The variable associated with the "set/show history size" | |
717 | command. */ | |
718 | static unsigned int history_size_setshow_var; | |
719 | ||
720 | static void | |
721 | show_history_size (struct ui_file *file, int from_tty, | |
722 | struct cmd_list_element *c, const char *value) | |
723 | { | |
724 | fprintf_filtered (file, _("The size of the command history is %s.\n"), | |
725 | value); | |
726 | } | |
727 | ||
728 | static char *history_filename; | |
729 | static void | |
730 | show_history_filename (struct ui_file *file, int from_tty, | |
731 | struct cmd_list_element *c, const char *value) | |
732 | { | |
733 | fprintf_filtered (file, _("The filename in which to record " | |
734 | "the command history is \"%s\".\n"), | |
735 | value); | |
736 | } | |
737 | ||
738 | /* This is like readline(), but it has some gdb-specific behavior. | |
739 | gdb may want readline in both the synchronous and async modes during | |
740 | a single gdb invocation. At the ordinary top-level prompt we might | |
741 | be using the async readline. That means we can't use | |
742 | rl_pre_input_hook, since it doesn't work properly in async mode. | |
743 | However, for a secondary prompt (" >", such as occurs during a | |
744 | `define'), gdb wants a synchronous response. | |
745 | ||
746 | We used to call readline() directly, running it in synchronous | |
747 | mode. But mixing modes this way is not supported, and as of | |
748 | readline 5.x it no longer works; the arrow keys come unbound during | |
749 | the synchronous call. So we make a nested call into the event | |
750 | loop. That's what gdb_readline_wrapper is for. */ | |
751 | ||
752 | /* A flag set as soon as gdb_readline_wrapper_line is called; we can't | |
753 | rely on gdb_readline_wrapper_result, which might still be NULL if | |
754 | the user types Control-D for EOF. */ | |
755 | static int gdb_readline_wrapper_done; | |
756 | ||
757 | /* The result of the current call to gdb_readline_wrapper, once a newline | |
758 | is seen. */ | |
759 | static char *gdb_readline_wrapper_result; | |
760 | ||
761 | /* Any intercepted hook. Operate-and-get-next sets this, expecting it | |
762 | to be called after the newline is processed (which will redisplay | |
763 | the prompt). But in gdb_readline_wrapper we will not get a new | |
764 | prompt until the next call, or until we return to the event loop. | |
765 | So we disable this hook around the newline and restore it before we | |
766 | return. */ | |
767 | static void (*saved_after_char_processing_hook) (void); | |
768 | ||
769 | /* This function is called when readline has seen a complete line of | |
770 | text. */ | |
771 | ||
772 | static void | |
773 | gdb_readline_wrapper_line (char *line) | |
774 | { | |
775 | gdb_assert (!gdb_readline_wrapper_done); | |
776 | gdb_readline_wrapper_result = line; | |
777 | gdb_readline_wrapper_done = 1; | |
778 | ||
779 | /* Prevent operate-and-get-next from acting too early. */ | |
780 | saved_after_char_processing_hook = after_char_processing_hook; | |
781 | after_char_processing_hook = NULL; | |
782 | ||
783 | /* Prevent parts of the prompt from being redisplayed if annotations | |
784 | are enabled, and readline's state getting out of sync. */ | |
785 | if (async_command_editing_p) | |
786 | rl_callback_handler_remove (); | |
787 | } | |
788 | ||
789 | struct gdb_readline_wrapper_cleanup | |
790 | { | |
791 | void (*handler_orig) (char *); | |
792 | int already_prompted_orig; | |
793 | }; | |
794 | ||
795 | static void | |
796 | gdb_readline_wrapper_cleanup (void *arg) | |
797 | { | |
798 | struct gdb_readline_wrapper_cleanup *cleanup = arg; | |
799 | ||
800 | rl_already_prompted = cleanup->already_prompted_orig; | |
801 | ||
802 | gdb_assert (input_handler == gdb_readline_wrapper_line); | |
803 | input_handler = cleanup->handler_orig; | |
804 | gdb_readline_wrapper_result = NULL; | |
805 | gdb_readline_wrapper_done = 0; | |
806 | ||
807 | after_char_processing_hook = saved_after_char_processing_hook; | |
808 | saved_after_char_processing_hook = NULL; | |
809 | ||
810 | xfree (cleanup); | |
811 | } | |
812 | ||
813 | char * | |
814 | gdb_readline_wrapper (char *prompt) | |
815 | { | |
816 | struct cleanup *back_to; | |
817 | struct gdb_readline_wrapper_cleanup *cleanup; | |
818 | char *retval; | |
819 | ||
820 | cleanup = xmalloc (sizeof (*cleanup)); | |
821 | cleanup->handler_orig = input_handler; | |
822 | input_handler = gdb_readline_wrapper_line; | |
823 | ||
824 | cleanup->already_prompted_orig = rl_already_prompted; | |
825 | ||
826 | back_to = make_cleanup (gdb_readline_wrapper_cleanup, cleanup); | |
827 | ||
828 | /* Display our prompt and prevent double prompt display. */ | |
829 | display_gdb_prompt (prompt); | |
830 | rl_already_prompted = 1; | |
831 | ||
832 | if (after_char_processing_hook) | |
833 | (*after_char_processing_hook) (); | |
834 | gdb_assert (after_char_processing_hook == NULL); | |
835 | ||
836 | while (gdb_do_one_event () >= 0) | |
837 | if (gdb_readline_wrapper_done) | |
838 | break; | |
839 | ||
840 | retval = gdb_readline_wrapper_result; | |
841 | do_cleanups (back_to); | |
842 | return retval; | |
843 | } | |
844 | ||
845 | \f | |
846 | /* The current saved history number from operate-and-get-next. | |
847 | This is -1 if not valid. */ | |
848 | static int operate_saved_history = -1; | |
849 | ||
850 | /* This is put on the appropriate hook and helps operate-and-get-next | |
851 | do its work. */ | |
852 | static void | |
853 | gdb_rl_operate_and_get_next_completion (void) | |
854 | { | |
855 | int delta = where_history () - operate_saved_history; | |
856 | ||
857 | /* The `key' argument to rl_get_previous_history is ignored. */ | |
858 | rl_get_previous_history (delta, 0); | |
859 | operate_saved_history = -1; | |
860 | ||
861 | /* readline doesn't automatically update the display for us. */ | |
862 | rl_redisplay (); | |
863 | ||
864 | after_char_processing_hook = NULL; | |
865 | rl_pre_input_hook = NULL; | |
866 | } | |
867 | ||
868 | /* This is a gdb-local readline command handler. It accepts the | |
869 | current command line (like RET does) and, if this command was taken | |
870 | from the history, arranges for the next command in the history to | |
871 | appear on the command line when the prompt returns. | |
872 | We ignore the arguments. */ | |
873 | static int | |
874 | gdb_rl_operate_and_get_next (int count, int key) | |
875 | { | |
876 | int where; | |
877 | ||
878 | /* Use the async hook. */ | |
879 | after_char_processing_hook = gdb_rl_operate_and_get_next_completion; | |
880 | ||
881 | /* Find the current line, and find the next line to use. */ | |
882 | where = where_history(); | |
883 | ||
884 | if ((history_is_stifled () && (history_length >= history_max_entries)) | |
885 | || (where >= history_length - 1)) | |
886 | operate_saved_history = where; | |
887 | else | |
888 | operate_saved_history = where + 1; | |
889 | ||
890 | return rl_newline (1, key); | |
891 | } | |
892 | \f | |
893 | /* Read one line from the command input stream `instream' | |
894 | into the local static buffer `linebuffer' (whose current length | |
895 | is `linelength'). | |
896 | The buffer is made bigger as necessary. | |
897 | Returns the address of the start of the line. | |
898 | ||
899 | NULL is returned for end of file. | |
900 | ||
901 | *If* the instream == stdin & stdin is a terminal, the line read | |
902 | is copied into the file line saver (global var char *line, | |
903 | length linesize) so that it can be duplicated. | |
904 | ||
905 | This routine either uses fancy command line editing or | |
906 | simple input as the user has requested. */ | |
907 | ||
908 | char * | |
909 | command_line_input (char *prompt_arg, int repeat, char *annotation_suffix) | |
910 | { | |
911 | static char *linebuffer = 0; | |
912 | static unsigned linelength = 0; | |
913 | char *p; | |
914 | char *p1; | |
915 | char *rl; | |
916 | char *local_prompt = prompt_arg; | |
917 | char *nline; | |
918 | char got_eof = 0; | |
919 | ||
920 | /* The annotation suffix must be non-NULL. */ | |
921 | if (annotation_suffix == NULL) | |
922 | annotation_suffix = ""; | |
923 | ||
924 | if (annotation_level > 1 && instream == stdin) | |
925 | { | |
926 | local_prompt = alloca ((prompt_arg == NULL ? 0 : strlen (prompt_arg)) | |
927 | + strlen (annotation_suffix) + 40); | |
928 | if (prompt_arg == NULL) | |
929 | local_prompt[0] = '\0'; | |
930 | else | |
931 | strcpy (local_prompt, prompt_arg); | |
932 | strcat (local_prompt, "\n\032\032"); | |
933 | strcat (local_prompt, annotation_suffix); | |
934 | strcat (local_prompt, "\n"); | |
935 | } | |
936 | ||
937 | if (linebuffer == 0) | |
938 | { | |
939 | linelength = 80; | |
940 | linebuffer = (char *) xmalloc (linelength); | |
941 | } | |
942 | ||
943 | p = linebuffer; | |
944 | ||
945 | /* Control-C quits instantly if typed while in this loop | |
946 | since it should not wait until the user types a newline. */ | |
947 | immediate_quit++; | |
948 | QUIT; | |
949 | #ifdef STOP_SIGNAL | |
950 | if (job_control) | |
951 | signal (STOP_SIGNAL, handle_stop_sig); | |
952 | #endif | |
953 | ||
954 | while (1) | |
955 | { | |
956 | /* Make sure that all output has been output. Some machines may | |
957 | let you get away with leaving out some of the gdb_flush, but | |
958 | not all. */ | |
959 | wrap_here (""); | |
960 | gdb_flush (gdb_stdout); | |
961 | gdb_flush (gdb_stderr); | |
962 | ||
963 | if (source_file_name != NULL) | |
964 | ++source_line_number; | |
965 | ||
966 | if (annotation_level > 1 && instream == stdin) | |
967 | { | |
968 | puts_unfiltered ("\n\032\032pre-"); | |
969 | puts_unfiltered (annotation_suffix); | |
970 | puts_unfiltered ("\n"); | |
971 | } | |
972 | ||
973 | /* Don't use fancy stuff if not talking to stdin. */ | |
974 | if (deprecated_readline_hook && input_from_terminal_p ()) | |
975 | { | |
976 | rl = (*deprecated_readline_hook) (local_prompt); | |
977 | } | |
978 | else if (command_editing_p && input_from_terminal_p ()) | |
979 | { | |
980 | rl = gdb_readline_wrapper (local_prompt); | |
981 | } | |
982 | else | |
983 | { | |
984 | rl = gdb_readline (local_prompt); | |
985 | } | |
986 | ||
987 | if (annotation_level > 1 && instream == stdin) | |
988 | { | |
989 | puts_unfiltered ("\n\032\032post-"); | |
990 | puts_unfiltered (annotation_suffix); | |
991 | puts_unfiltered ("\n"); | |
992 | } | |
993 | ||
994 | if (!rl || rl == (char *) EOF) | |
995 | { | |
996 | got_eof = 1; | |
997 | break; | |
998 | } | |
999 | if (strlen (rl) + 1 + (p - linebuffer) > linelength) | |
1000 | { | |
1001 | linelength = strlen (rl) + 1 + (p - linebuffer); | |
1002 | nline = (char *) xrealloc (linebuffer, linelength); | |
1003 | p += nline - linebuffer; | |
1004 | linebuffer = nline; | |
1005 | } | |
1006 | p1 = rl; | |
1007 | /* Copy line. Don't copy null at end. (Leaves line alone | |
1008 | if this was just a newline). */ | |
1009 | while (*p1) | |
1010 | *p++ = *p1++; | |
1011 | ||
1012 | xfree (rl); /* Allocated in readline. */ | |
1013 | ||
1014 | if (p == linebuffer || *(p - 1) != '\\') | |
1015 | break; | |
1016 | ||
1017 | p--; /* Put on top of '\'. */ | |
1018 | local_prompt = (char *) 0; | |
1019 | } | |
1020 | ||
1021 | #ifdef STOP_SIGNAL | |
1022 | if (job_control) | |
1023 | signal (STOP_SIGNAL, SIG_DFL); | |
1024 | #endif | |
1025 | immediate_quit--; | |
1026 | ||
1027 | if (got_eof) | |
1028 | return NULL; | |
1029 | ||
1030 | #define SERVER_COMMAND_LENGTH 7 | |
1031 | server_command = | |
1032 | (p - linebuffer > SERVER_COMMAND_LENGTH) | |
1033 | && strncmp (linebuffer, "server ", SERVER_COMMAND_LENGTH) == 0; | |
1034 | if (server_command) | |
1035 | { | |
1036 | /* Note that we don't set `line'. Between this and the check in | |
1037 | dont_repeat, this insures that repeating will still do the | |
1038 | right thing. */ | |
1039 | *p = '\0'; | |
1040 | return linebuffer + SERVER_COMMAND_LENGTH; | |
1041 | } | |
1042 | ||
1043 | /* Do history expansion if that is wished. */ | |
1044 | if (history_expansion_p && instream == stdin | |
1045 | && ISATTY (instream)) | |
1046 | { | |
1047 | char *history_value; | |
1048 | int expanded; | |
1049 | ||
1050 | *p = '\0'; /* Insert null now. */ | |
1051 | expanded = history_expand (linebuffer, &history_value); | |
1052 | if (expanded) | |
1053 | { | |
1054 | /* Print the changes. */ | |
1055 | printf_unfiltered ("%s\n", history_value); | |
1056 | ||
1057 | /* If there was an error, call this function again. */ | |
1058 | if (expanded < 0) | |
1059 | { | |
1060 | xfree (history_value); | |
1061 | return command_line_input (prompt_arg, repeat, | |
1062 | annotation_suffix); | |
1063 | } | |
1064 | if (strlen (history_value) > linelength) | |
1065 | { | |
1066 | linelength = strlen (history_value) + 1; | |
1067 | linebuffer = (char *) xrealloc (linebuffer, linelength); | |
1068 | } | |
1069 | strcpy (linebuffer, history_value); | |
1070 | p = linebuffer + strlen (linebuffer); | |
1071 | } | |
1072 | xfree (history_value); | |
1073 | } | |
1074 | ||
1075 | /* If we just got an empty line, and that is supposed to repeat the | |
1076 | previous command, return the value in the global buffer. */ | |
1077 | if (repeat && p == linebuffer) | |
1078 | return saved_command_line; | |
1079 | for (p1 = linebuffer; *p1 == ' ' || *p1 == '\t'; p1++); | |
1080 | if (repeat && !*p1) | |
1081 | return saved_command_line; | |
1082 | ||
1083 | *p = 0; | |
1084 | ||
1085 | /* Add line to history if appropriate. */ | |
1086 | if (instream == stdin | |
1087 | && ISATTY (stdin) && *linebuffer) | |
1088 | add_history (linebuffer); | |
1089 | ||
1090 | /* Note: lines consisting solely of comments are added to the command | |
1091 | history. This is useful when you type a command, and then | |
1092 | realize you don't want to execute it quite yet. You can comment | |
1093 | out the command and then later fetch it from the value history | |
1094 | and remove the '#'. The kill ring is probably better, but some | |
1095 | people are in the habit of commenting things out. */ | |
1096 | if (*p1 == '#') | |
1097 | *p1 = '\0'; /* Found a comment. */ | |
1098 | ||
1099 | /* Save into global buffer if appropriate. */ | |
1100 | if (repeat) | |
1101 | { | |
1102 | if (linelength > saved_command_line_size) | |
1103 | { | |
1104 | saved_command_line = xrealloc (saved_command_line, linelength); | |
1105 | saved_command_line_size = linelength; | |
1106 | } | |
1107 | strcpy (saved_command_line, linebuffer); | |
1108 | return saved_command_line; | |
1109 | } | |
1110 | ||
1111 | return linebuffer; | |
1112 | } | |
1113 | \f | |
1114 | /* Print the GDB banner. */ | |
1115 | void | |
1116 | print_gdb_version (struct ui_file *stream) | |
1117 | { | |
1118 | /* From GNU coding standards, first line is meant to be easy for a | |
1119 | program to parse, and is just canonical program name and version | |
1120 | number, which starts after last space. */ | |
1121 | ||
1122 | fprintf_filtered (stream, "GNU gdb %s%s\n", PKGVERSION, version); | |
1123 | ||
1124 | /* Second line is a copyright notice. */ | |
1125 | ||
1126 | fprintf_filtered (stream, | |
1127 | "Copyright (C) 2013 Free Software Foundation, Inc.\n"); | |
1128 | ||
1129 | /* Following the copyright is a brief statement that the program is | |
1130 | free software, that users are free to copy and change it on | |
1131 | certain conditions, that it is covered by the GNU GPL, and that | |
1132 | there is no warranty. */ | |
1133 | ||
1134 | fprintf_filtered (stream, "\ | |
1135 | License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\ | |
1136 | \nThis is free software: you are free to change and redistribute it.\n\ | |
1137 | There is NO WARRANTY, to the extent permitted by law. Type \"show copying\"\n\ | |
1138 | and \"show warranty\" for details.\n"); | |
1139 | ||
1140 | /* After the required info we print the configuration information. */ | |
1141 | ||
1142 | fprintf_filtered (stream, "This GDB was configured as \""); | |
1143 | if (strcmp (host_name, target_name) != 0) | |
1144 | { | |
1145 | fprintf_filtered (stream, "--host=%s --target=%s", | |
1146 | host_name, target_name); | |
1147 | } | |
1148 | else | |
1149 | { | |
1150 | fprintf_filtered (stream, "%s", host_name); | |
1151 | } | |
1152 | fprintf_filtered (stream, "\".\n\ | |
1153 | Type \"show configuration\" for configuration details."); | |
1154 | ||
1155 | if (REPORT_BUGS_TO[0]) | |
1156 | { | |
1157 | fprintf_filtered (stream, | |
1158 | _("\nFor bug reporting instructions, please see:\n")); | |
1159 | fprintf_filtered (stream, "%s.", REPORT_BUGS_TO); | |
1160 | } | |
1161 | } | |
1162 | ||
1163 | /* Print the details of GDB build-time configuration. */ | |
1164 | void | |
1165 | print_gdb_configuration (struct ui_file *stream) | |
1166 | { | |
1167 | fprintf_filtered (stream, _("\ | |
1168 | This GDB was configured as follows:\n\ | |
1169 | configure --host=%s --target=%s\n\ | |
1170 | "), host_name, target_name); | |
1171 | fprintf_filtered (stream, _("\ | |
1172 | --with-auto-load-dir=%s\n\ | |
1173 | --with-auto-load-safe-path=%s\n\ | |
1174 | "), AUTO_LOAD_DIR, AUTO_LOAD_SAFE_PATH); | |
1175 | #if HAVE_LIBEXPAT | |
1176 | fprintf_filtered (stream, _("\ | |
1177 | --with-expat\n\ | |
1178 | ")); | |
1179 | #else | |
1180 | fprintf_filtered (stream, _("\ | |
1181 | --without-expat\n\ | |
1182 | ")); | |
1183 | #endif | |
1184 | if (GDB_DATADIR[0]) | |
1185 | fprintf_filtered (stream, _("\ | |
1186 | --with-gdb-datadir=%s%s\n\ | |
1187 | "), GDB_DATADIR, GDB_DATADIR_RELOCATABLE ? " (relocatable)" : ""); | |
1188 | #ifdef ICONV_BIN | |
1189 | fprintf_filtered (stream, _("\ | |
1190 | --with-iconv-bin=%s%s\n\ | |
1191 | "), ICONV_BIN, ICONV_BIN_RELOCATABLE ? " (relocatable)" : ""); | |
1192 | #endif | |
1193 | if (JIT_READER_DIR[0]) | |
1194 | fprintf_filtered (stream, _("\ | |
1195 | --with-jit-reader-dir=%s%s\n\ | |
1196 | "), JIT_READER_DIR, JIT_READER_DIR_RELOCATABLE ? " (relocatable)" : ""); | |
1197 | #if HAVE_LIBUNWIND_IA64_H | |
1198 | fprintf_filtered (stream, _("\ | |
1199 | --with-libunwind-ia64\n\ | |
1200 | ")); | |
1201 | #else | |
1202 | fprintf_filtered (stream, _("\ | |
1203 | --without-libunwind-ia64\n\ | |
1204 | ")); | |
1205 | #endif | |
1206 | #if HAVE_LIBLZMA | |
1207 | fprintf_filtered (stream, _("\ | |
1208 | --with-lzma\n\ | |
1209 | ")); | |
1210 | #else | |
1211 | fprintf_filtered (stream, _("\ | |
1212 | --without-lzma\n\ | |
1213 | ")); | |
1214 | #endif | |
1215 | #ifdef WITH_PYTHON_PATH | |
1216 | fprintf_filtered (stream, _("\ | |
1217 | --with-python=%s%s\n\ | |
1218 | "), WITH_PYTHON_PATH, PYTHON_PATH_RELOCATABLE ? " (relocatable)" : ""); | |
1219 | #endif | |
1220 | #ifdef RELOC_SRCDIR | |
1221 | fprintf_filtered (stream, _("\ | |
1222 | --with-relocated-sources=%s\n\ | |
1223 | "), RELOC_SRCDIR); | |
1224 | #endif | |
1225 | if (DEBUGDIR[0]) | |
1226 | fprintf_filtered (stream, _("\ | |
1227 | --with-separate-debug-dir=%s%s\n\ | |
1228 | "), DEBUGDIR, DEBUGDIR_RELOCATABLE ? " (relocatable)" : ""); | |
1229 | if (TARGET_SYSTEM_ROOT[0]) | |
1230 | fprintf_filtered (stream, _("\ | |
1231 | --with-sysroot=%s%s\n\ | |
1232 | "), TARGET_SYSTEM_ROOT, TARGET_SYSTEM_ROOT_RELOCATABLE ? " (relocatable)" : ""); | |
1233 | if (SYSTEM_GDBINIT[0]) | |
1234 | fprintf_filtered (stream, _("\ | |
1235 | --with-system-gdbinit=%s%s\n\ | |
1236 | "), SYSTEM_GDBINIT, SYSTEM_GDBINIT_RELOCATABLE ? " (relocatable)" : ""); | |
1237 | #if HAVE_ZLIB_H | |
1238 | fprintf_filtered (stream, _("\ | |
1239 | --with-zlib\n\ | |
1240 | ")); | |
1241 | #else | |
1242 | fprintf_filtered (stream, _("\ | |
1243 | --without-zlib\n\ | |
1244 | ")); | |
1245 | #endif | |
1246 | #if HAVE_LIBBABELTRACE | |
1247 | fprintf_filtered (stream, _("\ | |
1248 | --with-babeltrace\n\ | |
1249 | ")); | |
1250 | #else | |
1251 | fprintf_filtered (stream, _("\ | |
1252 | --without-babeltrace\n\ | |
1253 | ")); | |
1254 | #endif | |
1255 | } | |
1256 | \f | |
1257 | ||
1258 | /* The current top level prompt, settable with "set prompt", and/or | |
1259 | with the python `gdb.prompt_hook' hook. */ | |
1260 | static char *top_prompt; | |
1261 | ||
1262 | /* Access method for the GDB prompt string. */ | |
1263 | ||
1264 | char * | |
1265 | get_prompt (void) | |
1266 | { | |
1267 | return top_prompt; | |
1268 | } | |
1269 | ||
1270 | /* Set method for the GDB prompt string. */ | |
1271 | ||
1272 | void | |
1273 | set_prompt (const char *s) | |
1274 | { | |
1275 | char *p = xstrdup (s); | |
1276 | ||
1277 | xfree (top_prompt); | |
1278 | top_prompt = p; | |
1279 | } | |
1280 | \f | |
1281 | ||
1282 | struct qt_args | |
1283 | { | |
1284 | char *args; | |
1285 | int from_tty; | |
1286 | }; | |
1287 | ||
1288 | /* Callback for iterate_over_inferiors. Kills or detaches the given | |
1289 | inferior, depending on how we originally gained control of it. */ | |
1290 | ||
1291 | static int | |
1292 | kill_or_detach (struct inferior *inf, void *args) | |
1293 | { | |
1294 | struct qt_args *qt = args; | |
1295 | struct thread_info *thread; | |
1296 | ||
1297 | if (inf->pid == 0) | |
1298 | return 0; | |
1299 | ||
1300 | thread = any_thread_of_process (inf->pid); | |
1301 | if (thread != NULL) | |
1302 | { | |
1303 | switch_to_thread (thread->ptid); | |
1304 | ||
1305 | /* Leave core files alone. */ | |
1306 | if (target_has_execution) | |
1307 | { | |
1308 | if (inf->attach_flag) | |
1309 | target_detach (qt->args, qt->from_tty); | |
1310 | else | |
1311 | target_kill (); | |
1312 | } | |
1313 | } | |
1314 | ||
1315 | return 0; | |
1316 | } | |
1317 | ||
1318 | /* Callback for iterate_over_inferiors. Prints info about what GDB | |
1319 | will do to each inferior on a "quit". ARG points to a struct | |
1320 | ui_out where output is to be collected. */ | |
1321 | ||
1322 | static int | |
1323 | print_inferior_quit_action (struct inferior *inf, void *arg) | |
1324 | { | |
1325 | struct ui_file *stb = arg; | |
1326 | ||
1327 | if (inf->pid == 0) | |
1328 | return 0; | |
1329 | ||
1330 | if (inf->attach_flag) | |
1331 | fprintf_filtered (stb, | |
1332 | _("\tInferior %d [%s] will be detached.\n"), inf->num, | |
1333 | target_pid_to_str (pid_to_ptid (inf->pid))); | |
1334 | else | |
1335 | fprintf_filtered (stb, | |
1336 | _("\tInferior %d [%s] will be killed.\n"), inf->num, | |
1337 | target_pid_to_str (pid_to_ptid (inf->pid))); | |
1338 | ||
1339 | return 0; | |
1340 | } | |
1341 | ||
1342 | /* If necessary, make the user confirm that we should quit. Return | |
1343 | non-zero if we should quit, zero if we shouldn't. */ | |
1344 | ||
1345 | int | |
1346 | quit_confirm (void) | |
1347 | { | |
1348 | struct ui_file *stb; | |
1349 | struct cleanup *old_chain; | |
1350 | char *str; | |
1351 | int qr; | |
1352 | ||
1353 | /* Don't even ask if we're only debugging a core file inferior. */ | |
1354 | if (!have_live_inferiors ()) | |
1355 | return 1; | |
1356 | ||
1357 | /* Build the query string as a single string. */ | |
1358 | stb = mem_fileopen (); | |
1359 | old_chain = make_cleanup_ui_file_delete (stb); | |
1360 | ||
1361 | /* This is something of a hack. But there's no reliable way to see | |
1362 | if a GUI is running. The `use_windows' variable doesn't cut | |
1363 | it. */ | |
1364 | if (deprecated_init_ui_hook) | |
1365 | fprintf_filtered (stb, _("A debugging session is active.\n" | |
1366 | "Do you still want to close the debugger?")); | |
1367 | else | |
1368 | { | |
1369 | fprintf_filtered (stb, _("A debugging session is active.\n\n")); | |
1370 | iterate_over_inferiors (print_inferior_quit_action, stb); | |
1371 | fprintf_filtered (stb, _("\nQuit anyway? ")); | |
1372 | } | |
1373 | ||
1374 | str = ui_file_xstrdup (stb, NULL); | |
1375 | make_cleanup (xfree, str); | |
1376 | ||
1377 | qr = query ("%s", str); | |
1378 | do_cleanups (old_chain); | |
1379 | return qr; | |
1380 | } | |
1381 | ||
1382 | /* Quit without asking for confirmation. */ | |
1383 | ||
1384 | void | |
1385 | quit_force (char *args, int from_tty) | |
1386 | { | |
1387 | int exit_code = 0; | |
1388 | struct qt_args qt; | |
1389 | volatile struct gdb_exception ex; | |
1390 | ||
1391 | /* An optional expression may be used to cause gdb to terminate with the | |
1392 | value of that expression. */ | |
1393 | if (args) | |
1394 | { | |
1395 | struct value *val = parse_and_eval (args); | |
1396 | ||
1397 | exit_code = (int) value_as_long (val); | |
1398 | } | |
1399 | else if (return_child_result) | |
1400 | exit_code = return_child_result_value; | |
1401 | ||
1402 | qt.args = args; | |
1403 | qt.from_tty = from_tty; | |
1404 | ||
1405 | /* Wrappers to make the code below a bit more readable. */ | |
1406 | #define DO_TRY \ | |
1407 | TRY_CATCH (ex, RETURN_MASK_ALL) | |
1408 | ||
1409 | #define DO_PRINT_EX \ | |
1410 | if (ex.reason < 0) \ | |
1411 | exception_print (gdb_stderr, ex) | |
1412 | ||
1413 | /* We want to handle any quit errors and exit regardless. */ | |
1414 | ||
1415 | /* Get out of tfind mode, and kill or detach all inferiors. */ | |
1416 | DO_TRY | |
1417 | { | |
1418 | disconnect_tracing (); | |
1419 | iterate_over_inferiors (kill_or_detach, &qt); | |
1420 | } | |
1421 | DO_PRINT_EX; | |
1422 | ||
1423 | /* Give all pushed targets a chance to do minimal cleanup, and pop | |
1424 | them all out. */ | |
1425 | DO_TRY | |
1426 | { | |
1427 | pop_all_targets (); | |
1428 | } | |
1429 | DO_PRINT_EX; | |
1430 | ||
1431 | /* Save the history information if it is appropriate to do so. */ | |
1432 | DO_TRY | |
1433 | { | |
1434 | if (write_history_p && history_filename) | |
1435 | write_history (history_filename); | |
1436 | } | |
1437 | DO_PRINT_EX; | |
1438 | ||
1439 | /* Do any final cleanups before exiting. */ | |
1440 | DO_TRY | |
1441 | { | |
1442 | do_final_cleanups (all_cleanups ()); | |
1443 | } | |
1444 | DO_PRINT_EX; | |
1445 | ||
1446 | exit (exit_code); | |
1447 | } | |
1448 | ||
1449 | /* Returns whether GDB is running on a terminal and input is | |
1450 | currently coming from that terminal. */ | |
1451 | ||
1452 | int | |
1453 | input_from_terminal_p (void) | |
1454 | { | |
1455 | if (batch_flag) | |
1456 | return 0; | |
1457 | ||
1458 | if (gdb_has_a_terminal () && instream == stdin) | |
1459 | return 1; | |
1460 | ||
1461 | /* If INSTREAM is unset, and we are not in a user command, we | |
1462 | must be in Insight. That's like having a terminal, for our | |
1463 | purposes. */ | |
1464 | if (instream == NULL && !in_user_command) | |
1465 | return 1; | |
1466 | ||
1467 | return 0; | |
1468 | } | |
1469 | \f | |
1470 | static void | |
1471 | dont_repeat_command (char *ignored, int from_tty) | |
1472 | { | |
1473 | /* Can't call dont_repeat here because we're not necessarily reading | |
1474 | from stdin. */ | |
1475 | *saved_command_line = 0; | |
1476 | } | |
1477 | \f | |
1478 | /* Functions to manipulate command line editing control variables. */ | |
1479 | ||
1480 | /* Number of commands to print in each call to show_commands. */ | |
1481 | #define Hist_print 10 | |
1482 | void | |
1483 | show_commands (char *args, int from_tty) | |
1484 | { | |
1485 | /* Index for history commands. Relative to history_base. */ | |
1486 | int offset; | |
1487 | ||
1488 | /* Number of the history entry which we are planning to display next. | |
1489 | Relative to history_base. */ | |
1490 | static int num = 0; | |
1491 | ||
1492 | /* Print out some of the commands from the command history. */ | |
1493 | ||
1494 | if (args) | |
1495 | { | |
1496 | if (args[0] == '+' && args[1] == '\0') | |
1497 | /* "info editing +" should print from the stored position. */ | |
1498 | ; | |
1499 | else | |
1500 | /* "info editing <exp>" should print around command number <exp>. */ | |
1501 | num = (parse_and_eval_long (args) - history_base) - Hist_print / 2; | |
1502 | } | |
1503 | /* "show commands" means print the last Hist_print commands. */ | |
1504 | else | |
1505 | { | |
1506 | num = history_length - Hist_print; | |
1507 | } | |
1508 | ||
1509 | if (num < 0) | |
1510 | num = 0; | |
1511 | ||
1512 | /* If there are at least Hist_print commands, we want to display the last | |
1513 | Hist_print rather than, say, the last 6. */ | |
1514 | if (history_length - num < Hist_print) | |
1515 | { | |
1516 | num = history_length - Hist_print; | |
1517 | if (num < 0) | |
1518 | num = 0; | |
1519 | } | |
1520 | ||
1521 | for (offset = num; | |
1522 | offset < num + Hist_print && offset < history_length; | |
1523 | offset++) | |
1524 | { | |
1525 | printf_filtered ("%5d %s\n", history_base + offset, | |
1526 | (history_get (history_base + offset))->line); | |
1527 | } | |
1528 | ||
1529 | /* The next command we want to display is the next one that we haven't | |
1530 | displayed yet. */ | |
1531 | num += Hist_print; | |
1532 | ||
1533 | /* If the user repeats this command with return, it should do what | |
1534 | "show commands +" does. This is unnecessary if arg is null, | |
1535 | because "show commands +" is not useful after "show commands". */ | |
1536 | if (from_tty && args) | |
1537 | { | |
1538 | args[0] = '+'; | |
1539 | args[1] = '\0'; | |
1540 | } | |
1541 | } | |
1542 | ||
1543 | /* Called by do_setshow_command. */ | |
1544 | static void | |
1545 | set_history_size_command (char *args, int from_tty, struct cmd_list_element *c) | |
1546 | { | |
1547 | /* Readline's history interface works with 'int', so it can only | |
1548 | handle history sizes up to INT_MAX. The command itself is | |
1549 | uinteger, so UINT_MAX means "unlimited", but we only get that if | |
1550 | the user does "set history size 0" -- "set history size <UINT_MAX>" | |
1551 | throws out-of-range. */ | |
1552 | if (history_size_setshow_var > INT_MAX | |
1553 | && history_size_setshow_var != UINT_MAX) | |
1554 | { | |
1555 | unsigned int new_value = history_size_setshow_var; | |
1556 | ||
1557 | /* Restore previous value before throwing. */ | |
1558 | if (history_is_stifled ()) | |
1559 | history_size_setshow_var = history_max_entries; | |
1560 | else | |
1561 | history_size_setshow_var = UINT_MAX; | |
1562 | ||
1563 | error (_("integer %u out of range"), new_value); | |
1564 | } | |
1565 | ||
1566 | /* Commit the new value to readline's history. */ | |
1567 | if (history_size_setshow_var == UINT_MAX) | |
1568 | unstifle_history (); | |
1569 | else | |
1570 | stifle_history (history_size_setshow_var); | |
1571 | } | |
1572 | ||
1573 | void | |
1574 | set_history (char *args, int from_tty) | |
1575 | { | |
1576 | printf_unfiltered (_("\"set history\" must be followed " | |
1577 | "by the name of a history subcommand.\n")); | |
1578 | help_list (sethistlist, "set history ", -1, gdb_stdout); | |
1579 | } | |
1580 | ||
1581 | void | |
1582 | show_history (char *args, int from_tty) | |
1583 | { | |
1584 | cmd_show_list (showhistlist, from_tty, ""); | |
1585 | } | |
1586 | ||
1587 | int info_verbose = 0; /* Default verbose msgs off. */ | |
1588 | ||
1589 | /* Called by do_setshow_command. An elaborate joke. */ | |
1590 | void | |
1591 | set_verbose (char *args, int from_tty, struct cmd_list_element *c) | |
1592 | { | |
1593 | const char *cmdname = "verbose"; | |
1594 | struct cmd_list_element *showcmd; | |
1595 | ||
1596 | showcmd = lookup_cmd_1 (&cmdname, showlist, NULL, 1); | |
1597 | gdb_assert (showcmd != NULL && showcmd != CMD_LIST_AMBIGUOUS); | |
1598 | ||
1599 | if (info_verbose) | |
1600 | { | |
1601 | c->doc = "Set verbose printing of informational messages."; | |
1602 | showcmd->doc = "Show verbose printing of informational messages."; | |
1603 | } | |
1604 | else | |
1605 | { | |
1606 | c->doc = "Set verbosity."; | |
1607 | showcmd->doc = "Show verbosity."; | |
1608 | } | |
1609 | } | |
1610 | ||
1611 | /* Init the history buffer. Note that we are called after the init file(s) | |
1612 | have been read so that the user can change the history file via his | |
1613 | .gdbinit file (for instance). The GDBHISTFILE environment variable | |
1614 | overrides all of this. */ | |
1615 | ||
1616 | void | |
1617 | init_history (void) | |
1618 | { | |
1619 | char *tmpenv; | |
1620 | ||
1621 | tmpenv = getenv ("HISTSIZE"); | |
1622 | if (tmpenv) | |
1623 | { | |
1624 | int var; | |
1625 | ||
1626 | var = atoi (tmpenv); | |
1627 | if (var < 0) | |
1628 | { | |
1629 | /* Prefer ending up with no history rather than overflowing | |
1630 | readline's history interface, which uses signed 'int' | |
1631 | everywhere. */ | |
1632 | var = 0; | |
1633 | } | |
1634 | ||
1635 | history_size_setshow_var = var; | |
1636 | } | |
1637 | /* If the init file hasn't set a size yet, pick the default. */ | |
1638 | else if (history_size_setshow_var == 0) | |
1639 | history_size_setshow_var = 256; | |
1640 | ||
1641 | /* Note that unlike "set history size 0", "HISTSIZE=0" really sets | |
1642 | the history size to 0... */ | |
1643 | stifle_history (history_size_setshow_var); | |
1644 | ||
1645 | tmpenv = getenv ("GDBHISTFILE"); | |
1646 | if (tmpenv) | |
1647 | history_filename = xstrdup (tmpenv); | |
1648 | else if (!history_filename) | |
1649 | { | |
1650 | /* We include the current directory so that if the user changes | |
1651 | directories the file written will be the same as the one | |
1652 | that was read. */ | |
1653 | #ifdef __MSDOS__ | |
1654 | /* No leading dots in file names are allowed on MSDOS. */ | |
1655 | history_filename = concat (current_directory, "/_gdb_history", | |
1656 | (char *)NULL); | |
1657 | #else | |
1658 | history_filename = concat (current_directory, "/.gdb_history", | |
1659 | (char *)NULL); | |
1660 | #endif | |
1661 | } | |
1662 | read_history (history_filename); | |
1663 | } | |
1664 | ||
1665 | static void | |
1666 | show_prompt (struct ui_file *file, int from_tty, | |
1667 | struct cmd_list_element *c, const char *value) | |
1668 | { | |
1669 | fprintf_filtered (file, _("Gdb's prompt is \"%s\".\n"), value); | |
1670 | } | |
1671 | ||
1672 | static void | |
1673 | show_async_command_editing_p (struct ui_file *file, int from_tty, | |
1674 | struct cmd_list_element *c, const char *value) | |
1675 | { | |
1676 | fprintf_filtered (file, _("Editing of command lines as " | |
1677 | "they are typed is %s.\n"), | |
1678 | value); | |
1679 | } | |
1680 | ||
1681 | static void | |
1682 | show_annotation_level (struct ui_file *file, int from_tty, | |
1683 | struct cmd_list_element *c, const char *value) | |
1684 | { | |
1685 | fprintf_filtered (file, _("Annotation_level is %s.\n"), value); | |
1686 | } | |
1687 | ||
1688 | static void | |
1689 | show_exec_done_display_p (struct ui_file *file, int from_tty, | |
1690 | struct cmd_list_element *c, const char *value) | |
1691 | { | |
1692 | fprintf_filtered (file, _("Notification of completion for " | |
1693 | "asynchronous execution commands is %s.\n"), | |
1694 | value); | |
1695 | } | |
1696 | ||
1697 | /* "set" command for the gdb_datadir configuration variable. */ | |
1698 | ||
1699 | static void | |
1700 | set_gdb_datadir (char *args, int from_tty, struct cmd_list_element *c) | |
1701 | { | |
1702 | observer_notify_gdb_datadir_changed (); | |
1703 | } | |
1704 | ||
1705 | static void | |
1706 | init_main (void) | |
1707 | { | |
1708 | /* Initialize the prompt to a simple "(gdb) " prompt or to whatever | |
1709 | the DEFAULT_PROMPT is. */ | |
1710 | set_prompt (DEFAULT_PROMPT); | |
1711 | ||
1712 | /* Set things up for annotation_level > 1, if the user ever decides | |
1713 | to use it. */ | |
1714 | async_annotation_suffix = "prompt"; | |
1715 | ||
1716 | /* Set the important stuff up for command editing. */ | |
1717 | command_editing_p = 1; | |
1718 | history_expansion_p = 0; | |
1719 | write_history_p = 0; | |
1720 | ||
1721 | /* Setup important stuff for command line editing. */ | |
1722 | rl_completion_word_break_hook = gdb_completion_word_break_characters; | |
1723 | rl_completion_entry_function = readline_line_completion_function; | |
1724 | rl_completer_word_break_characters = default_word_break_characters (); | |
1725 | rl_completer_quote_characters = get_gdb_completer_quote_characters (); | |
1726 | rl_readline_name = "gdb"; | |
1727 | rl_terminal_name = getenv ("TERM"); | |
1728 | ||
1729 | /* The name for this defun comes from Bash, where it originated. | |
1730 | 15 is Control-o, the same binding this function has in Bash. */ | |
1731 | rl_add_defun ("operate-and-get-next", gdb_rl_operate_and_get_next, 15); | |
1732 | ||
1733 | add_setshow_string_cmd ("prompt", class_support, | |
1734 | &top_prompt, | |
1735 | _("Set gdb's prompt"), | |
1736 | _("Show gdb's prompt"), | |
1737 | NULL, NULL, | |
1738 | show_prompt, | |
1739 | &setlist, &showlist); | |
1740 | ||
1741 | add_com ("dont-repeat", class_support, dont_repeat_command, _("\ | |
1742 | Don't repeat this command.\nPrimarily \ | |
1743 | used inside of user-defined commands that should not be repeated when\n\ | |
1744 | hitting return.")); | |
1745 | ||
1746 | add_setshow_boolean_cmd ("editing", class_support, | |
1747 | &async_command_editing_p, _("\ | |
1748 | Set editing of command lines as they are typed."), _("\ | |
1749 | Show editing of command lines as they are typed."), _("\ | |
1750 | Use \"on\" to enable the editing, and \"off\" to disable it.\n\ | |
1751 | Without an argument, command line editing is enabled. To edit, use\n\ | |
1752 | EMACS-like or VI-like commands like control-P or ESC."), | |
1753 | set_async_editing_command, | |
1754 | show_async_command_editing_p, | |
1755 | &setlist, &showlist); | |
1756 | ||
1757 | add_setshow_boolean_cmd ("save", no_class, &write_history_p, _("\ | |
1758 | Set saving of the history record on exit."), _("\ | |
1759 | Show saving of the history record on exit."), _("\ | |
1760 | Use \"on\" to enable the saving, and \"off\" to disable it.\n\ | |
1761 | Without an argument, saving is enabled."), | |
1762 | NULL, | |
1763 | show_write_history_p, | |
1764 | &sethistlist, &showhistlist); | |
1765 | ||
1766 | add_setshow_uinteger_cmd ("size", no_class, &history_size_setshow_var, _("\ | |
1767 | Set the size of the command history,"), _("\ | |
1768 | Show the size of the command history,"), _("\ | |
1769 | ie. the number of previous commands to keep a record of.\n\ | |
1770 | If set to \"unlimited\", the number of commands kept in the history\n\ | |
1771 | list is unlimited. This defaults to the value of the environment\n\ | |
1772 | variable \"HISTSIZE\", or to 256 if this variable is not set."), | |
1773 | set_history_size_command, | |
1774 | show_history_size, | |
1775 | &sethistlist, &showhistlist); | |
1776 | ||
1777 | add_setshow_filename_cmd ("filename", no_class, &history_filename, _("\ | |
1778 | Set the filename in which to record the command history"), _("\ | |
1779 | Show the filename in which to record the command history"), _("\ | |
1780 | (the list of previous commands of which a record is kept)."), | |
1781 | NULL, | |
1782 | show_history_filename, | |
1783 | &sethistlist, &showhistlist); | |
1784 | ||
1785 | add_setshow_boolean_cmd ("confirm", class_support, &confirm, _("\ | |
1786 | Set whether to confirm potentially dangerous operations."), _("\ | |
1787 | Show whether to confirm potentially dangerous operations."), NULL, | |
1788 | NULL, | |
1789 | show_confirm, | |
1790 | &setlist, &showlist); | |
1791 | ||
1792 | add_setshow_zinteger_cmd ("annotate", class_obscure, &annotation_level, _("\ | |
1793 | Set annotation_level."), _("\ | |
1794 | Show annotation_level."), _("\ | |
1795 | 0 == normal; 1 == fullname (for use when running under emacs)\n\ | |
1796 | 2 == output annotated suitably for use by programs that control GDB."), | |
1797 | NULL, | |
1798 | show_annotation_level, | |
1799 | &setlist, &showlist); | |
1800 | ||
1801 | add_setshow_boolean_cmd ("exec-done-display", class_support, | |
1802 | &exec_done_display_p, _("\ | |
1803 | Set notification of completion for asynchronous execution commands."), _("\ | |
1804 | Show notification of completion for asynchronous execution commands."), _("\ | |
1805 | Use \"on\" to enable the notification, and \"off\" to disable it."), | |
1806 | NULL, | |
1807 | show_exec_done_display_p, | |
1808 | &setlist, &showlist); | |
1809 | ||
1810 | add_setshow_filename_cmd ("data-directory", class_maintenance, | |
1811 | &gdb_datadir, _("Set GDB's data directory."), | |
1812 | _("Show GDB's data directory."), | |
1813 | _("\ | |
1814 | When set, GDB uses the specified path to search for data files."), | |
1815 | set_gdb_datadir, NULL, | |
1816 | &setlist, | |
1817 | &showlist); | |
1818 | } | |
1819 | ||
1820 | void | |
1821 | gdb_init (char *argv0) | |
1822 | { | |
1823 | if (pre_init_ui_hook) | |
1824 | pre_init_ui_hook (); | |
1825 | ||
1826 | /* Run the init function of each source file. */ | |
1827 | ||
1828 | #ifdef __MSDOS__ | |
1829 | /* Make sure we return to the original directory upon exit, come | |
1830 | what may, since the OS doesn't do that for us. */ | |
1831 | make_final_cleanup (do_chdir_cleanup, xstrdup (current_directory)); | |
1832 | #endif | |
1833 | ||
1834 | init_cmd_lists (); /* This needs to be done first. */ | |
1835 | initialize_targets (); /* Setup target_terminal macros for utils.c. */ | |
1836 | initialize_utils (); /* Make errors and warnings possible. */ | |
1837 | ||
1838 | /* Here is where we call all the _initialize_foo routines. */ | |
1839 | initialize_all_files (); | |
1840 | ||
1841 | /* This creates the current_program_space. Do this after all the | |
1842 | _initialize_foo routines have had a chance to install their | |
1843 | per-sspace data keys. Also do this before | |
1844 | initialize_current_architecture is called, because it accesses | |
1845 | exec_bfd of the current program space. */ | |
1846 | initialize_progspace (); | |
1847 | initialize_inferiors (); | |
1848 | initialize_current_architecture (); | |
1849 | init_cli_cmds(); | |
1850 | initialize_event_loop (); | |
1851 | init_main (); /* But that omits this file! Do it now. */ | |
1852 | ||
1853 | initialize_stdin_serial (); | |
1854 | ||
1855 | async_init_signals (); | |
1856 | ||
1857 | /* We need a default language for parsing expressions, so simple | |
1858 | things like "set width 0" won't fail if no language is explicitly | |
1859 | set in a config file or implicitly set by reading an executable | |
1860 | during startup. */ | |
1861 | set_language (language_c); | |
1862 | expected_language = current_language; /* Don't warn about the change. */ | |
1863 | ||
1864 | /* Allow another UI to initialize. If the UI fails to initialize, | |
1865 | and it wants GDB to revert to the CLI, it should clear | |
1866 | deprecated_init_ui_hook. */ | |
1867 | if (deprecated_init_ui_hook) | |
1868 | deprecated_init_ui_hook (argv0); | |
1869 | ||
1870 | #ifdef HAVE_PYTHON | |
1871 | /* Python initialization can require various commands to be | |
1872 | installed. For example "info pretty-printer" needs the "info" | |
1873 | prefix to be installed. Keep things simple and just do final | |
1874 | python initialization here. */ | |
1875 | finish_python_initialization (); | |
1876 | #endif | |
1877 | } |