]>
Commit | Line | Data |
---|---|---|
1 | /* Top level stuff for GDB, the GNU debugger. | |
2 | ||
3 | Copyright (C) 1986-2022 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 "top.h" | |
22 | #include "target.h" | |
23 | #include "inferior.h" | |
24 | #include "symfile.h" | |
25 | #include "gdbcore.h" | |
26 | #include "getopt.h" | |
27 | ||
28 | #include <sys/types.h> | |
29 | #include <sys/stat.h> | |
30 | #include <ctype.h> | |
31 | #include "gdbsupport/event-loop.h" | |
32 | #include "ui-out.h" | |
33 | ||
34 | #include "interps.h" | |
35 | #include "main.h" | |
36 | #include "source.h" | |
37 | #include "cli/cli-cmds.h" | |
38 | #include "objfiles.h" | |
39 | #include "auto-load.h" | |
40 | #include "maint.h" | |
41 | ||
42 | #include "filenames.h" | |
43 | #include "gdbsupport/filestuff.h" | |
44 | #include <signal.h> | |
45 | #include "event-top.h" | |
46 | #include "infrun.h" | |
47 | #include "gdbsupport/signals-state-save-restore.h" | |
48 | #include <algorithm> | |
49 | #include <vector> | |
50 | #include "gdbsupport/pathstuff.h" | |
51 | #include "cli/cli-style.h" | |
52 | #ifdef GDBTK | |
53 | #include "gdbtk/generic/gdbtk.h" | |
54 | #endif | |
55 | #include "gdbsupport/alt-stack.h" | |
56 | #include "observable.h" | |
57 | #include "serial.h" | |
58 | ||
59 | /* The selected interpreter. This will be used as a set command | |
60 | variable, so it should always be malloc'ed - since | |
61 | do_setshow_command will free it. */ | |
62 | char *interpreter_p; | |
63 | ||
64 | /* Whether dbx commands will be handled. */ | |
65 | int dbx_commands = 0; | |
66 | ||
67 | /* System root path, used to find libraries etc. */ | |
68 | std::string gdb_sysroot; | |
69 | ||
70 | /* GDB datadir, used to store data files. */ | |
71 | std::string gdb_datadir; | |
72 | ||
73 | /* Non-zero if GDB_DATADIR was provided on the command line. | |
74 | This doesn't track whether data-directory is set later from the | |
75 | command line, but we don't reread system.gdbinit when that happens. */ | |
76 | static int gdb_datadir_provided = 0; | |
77 | ||
78 | /* If gdb was configured with --with-python=/path, | |
79 | the possibly relocated path to python's lib directory. */ | |
80 | std::string python_libdir; | |
81 | ||
82 | /* Target IO streams. */ | |
83 | struct ui_file *gdb_stdtargin; | |
84 | struct ui_file *gdb_stdtarg; | |
85 | struct ui_file *gdb_stdtargerr; | |
86 | ||
87 | /* True if --batch or --batch-silent was seen. */ | |
88 | int batch_flag = 0; | |
89 | ||
90 | /* Support for the --batch-silent option. */ | |
91 | int batch_silent = 0; | |
92 | ||
93 | /* Support for --return-child-result option. | |
94 | Set the default to -1 to return error in the case | |
95 | that the program does not run or does not complete. */ | |
96 | int return_child_result = 0; | |
97 | int return_child_result_value = -1; | |
98 | ||
99 | ||
100 | /* GDB as it has been invoked from the command line (i.e. argv[0]). */ | |
101 | static char *gdb_program_name; | |
102 | ||
103 | /* Return read only pointer to GDB_PROGRAM_NAME. */ | |
104 | const char * | |
105 | get_gdb_program_name (void) | |
106 | { | |
107 | return gdb_program_name; | |
108 | } | |
109 | ||
110 | static void print_gdb_help (struct ui_file *); | |
111 | ||
112 | /* Set the data-directory parameter to NEW_DATADIR. | |
113 | If NEW_DATADIR is not a directory then a warning is printed. | |
114 | We don't signal an error for backward compatibility. */ | |
115 | ||
116 | void | |
117 | set_gdb_data_directory (const char *new_datadir) | |
118 | { | |
119 | struct stat st; | |
120 | ||
121 | if (stat (new_datadir, &st) < 0) | |
122 | { | |
123 | int save_errno = errno; | |
124 | ||
125 | fprintf_unfiltered (gdb_stderr, "Warning: "); | |
126 | print_sys_errmsg (new_datadir, save_errno); | |
127 | } | |
128 | else if (!S_ISDIR (st.st_mode)) | |
129 | warning (_("%ps is not a directory."), | |
130 | styled_string (file_name_style.style (), new_datadir)); | |
131 | ||
132 | gdb_datadir = gdb_realpath (new_datadir).get (); | |
133 | ||
134 | /* gdb_realpath won't return an absolute path if the path doesn't exist, | |
135 | but we still want to record an absolute path here. If the user entered | |
136 | "../foo" and "../foo" doesn't exist then we'll record $(pwd)/../foo which | |
137 | isn't canonical, but that's ok. */ | |
138 | if (!IS_ABSOLUTE_PATH (gdb_datadir.c_str ())) | |
139 | { | |
140 | gdb::unique_xmalloc_ptr<char> abs_datadir | |
141 | = gdb_abspath (gdb_datadir.c_str ()); | |
142 | ||
143 | gdb_datadir = abs_datadir.get (); | |
144 | } | |
145 | } | |
146 | ||
147 | /* Relocate a file or directory. PROGNAME is the name by which gdb | |
148 | was invoked (i.e., argv[0]). INITIAL is the default value for the | |
149 | file or directory. RELOCATABLE is true if the value is relocatable, | |
150 | false otherwise. This may return an empty string under the same | |
151 | conditions as make_relative_prefix returning NULL. */ | |
152 | ||
153 | static std::string | |
154 | relocate_path (const char *progname, const char *initial, bool relocatable) | |
155 | { | |
156 | if (relocatable) | |
157 | { | |
158 | gdb::unique_xmalloc_ptr<char> str (make_relative_prefix (progname, | |
159 | BINDIR, | |
160 | initial)); | |
161 | if (str != nullptr) | |
162 | return str.get (); | |
163 | return std::string (); | |
164 | } | |
165 | return initial; | |
166 | } | |
167 | ||
168 | /* Like relocate_path, but specifically checks for a directory. | |
169 | INITIAL is relocated according to the rules of relocate_path. If | |
170 | the result is a directory, it is used; otherwise, INITIAL is used. | |
171 | The chosen directory is then canonicalized using lrealpath. */ | |
172 | ||
173 | std::string | |
174 | relocate_gdb_directory (const char *initial, bool relocatable) | |
175 | { | |
176 | std::string dir = relocate_path (gdb_program_name, initial, relocatable); | |
177 | if (!dir.empty ()) | |
178 | { | |
179 | struct stat s; | |
180 | ||
181 | if (stat (dir.c_str (), &s) != 0 || !S_ISDIR (s.st_mode)) | |
182 | { | |
183 | dir.clear (); | |
184 | } | |
185 | } | |
186 | if (dir.empty ()) | |
187 | dir = initial; | |
188 | ||
189 | /* Canonicalize the directory. */ | |
190 | if (!dir.empty ()) | |
191 | { | |
192 | gdb::unique_xmalloc_ptr<char> canon_sysroot (lrealpath (dir.c_str ())); | |
193 | ||
194 | if (canon_sysroot) | |
195 | dir = canon_sysroot.get (); | |
196 | } | |
197 | ||
198 | return dir; | |
199 | } | |
200 | ||
201 | /* Given a gdbinit path in FILE, adjusts it according to the gdb_datadir | |
202 | parameter if it is in the data dir, or passes it through relocate_path | |
203 | otherwise. */ | |
204 | ||
205 | static std::string | |
206 | relocate_file_path_maybe_in_datadir (const std::string &file, | |
207 | bool relocatable) | |
208 | { | |
209 | size_t datadir_len = strlen (GDB_DATADIR); | |
210 | ||
211 | std::string relocated_path; | |
212 | ||
213 | /* If SYSTEM_GDBINIT lives in data-directory, and data-directory | |
214 | has been provided, search for SYSTEM_GDBINIT there. */ | |
215 | if (gdb_datadir_provided | |
216 | && datadir_len < file.length () | |
217 | && filename_ncmp (file.c_str (), GDB_DATADIR, datadir_len) == 0 | |
218 | && IS_DIR_SEPARATOR (file[datadir_len])) | |
219 | { | |
220 | /* Append the part of SYSTEM_GDBINIT that follows GDB_DATADIR | |
221 | to gdb_datadir. */ | |
222 | ||
223 | size_t start = datadir_len; | |
224 | for (; IS_DIR_SEPARATOR (file[start]); ++start) | |
225 | ; | |
226 | relocated_path = gdb_datadir + SLASH_STRING + file.substr (start); | |
227 | } | |
228 | else | |
229 | { | |
230 | relocated_path = relocate_path (gdb_program_name, file.c_str (), | |
231 | relocatable); | |
232 | } | |
233 | return relocated_path; | |
234 | } | |
235 | ||
236 | /* A class to wrap up the logic for finding the three different types of | |
237 | initialisation files GDB uses, system wide, home directory, and current | |
238 | working directory. */ | |
239 | ||
240 | class gdb_initfile_finder | |
241 | { | |
242 | public: | |
243 | /* Constructor. Finds initialisation files named FILENAME in the home | |
244 | directory or local (current working) directory. System initialisation | |
245 | files are found in both SYSTEM_FILENAME and SYSTEM_DIRNAME if these | |
246 | are not nullptr (either or both can be). The matching *_RELOCATABLE | |
247 | flag is passed through to RELOCATE_FILE_PATH_MAYBE_IN_DATADIR. | |
248 | ||
249 | If FILENAME starts with a '.' then when looking in the home directory | |
250 | this first '.' can be ignored in some cases. */ | |
251 | explicit gdb_initfile_finder (const char *filename, | |
252 | const char *system_filename, | |
253 | bool system_filename_relocatable, | |
254 | const char *system_dirname, | |
255 | bool system_dirname_relocatable, | |
256 | bool lookup_local_file) | |
257 | { | |
258 | struct stat s; | |
259 | ||
260 | if (system_filename != nullptr && system_filename[0] != '\0') | |
261 | { | |
262 | std::string relocated_filename | |
263 | = relocate_file_path_maybe_in_datadir (system_filename, | |
264 | system_filename_relocatable); | |
265 | if (!relocated_filename.empty () | |
266 | && stat (relocated_filename.c_str (), &s) == 0) | |
267 | m_system_files.push_back (relocated_filename); | |
268 | } | |
269 | ||
270 | if (system_dirname != nullptr && system_dirname[0] != '\0') | |
271 | { | |
272 | std::string relocated_dirname | |
273 | = relocate_file_path_maybe_in_datadir (system_dirname, | |
274 | system_dirname_relocatable); | |
275 | if (!relocated_dirname.empty ()) | |
276 | { | |
277 | gdb_dir_up dir (opendir (relocated_dirname.c_str ())); | |
278 | if (dir != nullptr) | |
279 | { | |
280 | std::vector<std::string> files; | |
281 | while (true) | |
282 | { | |
283 | struct dirent *ent = readdir (dir.get ()); | |
284 | if (ent == nullptr) | |
285 | break; | |
286 | std::string name (ent->d_name); | |
287 | if (name == "." || name == "..") | |
288 | continue; | |
289 | /* ent->d_type is not available on all systems | |
290 | (e.g. mingw, Solaris), so we have to call stat(). */ | |
291 | std::string tmp_filename | |
292 | = relocated_dirname + SLASH_STRING + name; | |
293 | if (stat (tmp_filename.c_str (), &s) != 0 | |
294 | || !S_ISREG (s.st_mode)) | |
295 | continue; | |
296 | const struct extension_language_defn *extlang | |
297 | = get_ext_lang_of_file (tmp_filename.c_str ()); | |
298 | /* We effectively don't support "set script-extension | |
299 | off/soft", because we are loading system init files | |
300 | here, so it does not really make sense to depend on | |
301 | a setting. */ | |
302 | if (extlang != nullptr && ext_lang_present_p (extlang)) | |
303 | files.push_back (std::move (tmp_filename)); | |
304 | } | |
305 | std::sort (files.begin (), files.end ()); | |
306 | m_system_files.insert (m_system_files.end (), | |
307 | files.begin (), files.end ()); | |
308 | } | |
309 | } | |
310 | } | |
311 | ||
312 | /* If the .gdbinit file in the current directory is the same as | |
313 | the $HOME/.gdbinit file, it should not be sourced. homebuf | |
314 | and cwdbuf are used in that purpose. Make sure that the stats | |
315 | are zero in case one of them fails (this guarantees that they | |
316 | won't match if either exists). */ | |
317 | ||
318 | struct stat homebuf, cwdbuf; | |
319 | memset (&homebuf, 0, sizeof (struct stat)); | |
320 | memset (&cwdbuf, 0, sizeof (struct stat)); | |
321 | ||
322 | m_home_file = find_gdb_home_config_file (filename, &homebuf); | |
323 | ||
324 | if (lookup_local_file && stat (filename, &cwdbuf) == 0) | |
325 | { | |
326 | if (m_home_file.empty () | |
327 | || memcmp ((char *) &homebuf, (char *) &cwdbuf, | |
328 | sizeof (struct stat))) | |
329 | m_local_file = filename; | |
330 | } | |
331 | } | |
332 | ||
333 | DISABLE_COPY_AND_ASSIGN (gdb_initfile_finder); | |
334 | ||
335 | /* Return a list of system initialisation files. The list could be | |
336 | empty. */ | |
337 | const std::vector<std::string> &system_files () const | |
338 | { return m_system_files; } | |
339 | ||
340 | /* Return the path to the home initialisation file. The string can be | |
341 | empty if there is no such file. */ | |
342 | const std::string &home_file () const | |
343 | { return m_home_file; } | |
344 | ||
345 | /* Return the path to the local initialisation file. The string can be | |
346 | empty if there is no such file. */ | |
347 | const std::string &local_file () const | |
348 | { return m_local_file; } | |
349 | ||
350 | private: | |
351 | ||
352 | /* Vector of all system init files in the order they should be processed. | |
353 | Could be empty. */ | |
354 | std::vector<std::string> m_system_files; | |
355 | ||
356 | /* Initialization file from the home directory. Could be the empty | |
357 | string if there is no such file found. */ | |
358 | std::string m_home_file; | |
359 | ||
360 | /* Initialization file from the current working directory. Could be the | |
361 | empty string if there is no such file found. */ | |
362 | std::string m_local_file; | |
363 | }; | |
364 | ||
365 | /* Compute the locations of init files that GDB should source and return | |
366 | them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. The SYSTEM_GDBINIT | |
367 | can be returned as an empty vector, and HOME_GDBINIT and LOCAL_GDBINIT | |
368 | can be returned as empty strings if there is no init file of that | |
369 | type. */ | |
370 | ||
371 | static void | |
372 | get_init_files (std::vector<std::string> *system_gdbinit, | |
373 | std::string *home_gdbinit, | |
374 | std::string *local_gdbinit) | |
375 | { | |
376 | /* Cache the file lookup object so we only actually search for the files | |
377 | once. */ | |
378 | static gdb::optional<gdb_initfile_finder> init_files; | |
379 | if (!init_files.has_value ()) | |
380 | init_files.emplace (GDBINIT, SYSTEM_GDBINIT, SYSTEM_GDBINIT_RELOCATABLE, | |
381 | SYSTEM_GDBINIT_DIR, SYSTEM_GDBINIT_DIR_RELOCATABLE, | |
382 | true); | |
383 | ||
384 | *system_gdbinit = init_files->system_files (); | |
385 | *home_gdbinit = init_files->home_file (); | |
386 | *local_gdbinit = init_files->local_file (); | |
387 | } | |
388 | ||
389 | /* Compute the location of the early init file GDB should source and return | |
390 | it in HOME_GDBEARLYINIT. HOME_GDBEARLYINIT could be returned as an | |
391 | empty string if there is no early init file found. */ | |
392 | ||
393 | static void | |
394 | get_earlyinit_files (std::string *home_gdbearlyinit) | |
395 | { | |
396 | /* Cache the file lookup object so we only actually search for the files | |
397 | once. */ | |
398 | static gdb::optional<gdb_initfile_finder> init_files; | |
399 | if (!init_files.has_value ()) | |
400 | init_files.emplace (GDBEARLYINIT, nullptr, false, nullptr, false, false); | |
401 | ||
402 | *home_gdbearlyinit = init_files->home_file (); | |
403 | } | |
404 | ||
405 | /* Start up the event loop. This is the entry point to the event loop | |
406 | from the command loop. */ | |
407 | ||
408 | static void | |
409 | start_event_loop () | |
410 | { | |
411 | /* Loop until there is nothing to do. This is the entry point to | |
412 | the event loop engine. gdb_do_one_event will process one event | |
413 | for each invocation. It blocks waiting for an event and then | |
414 | processes it. */ | |
415 | while (1) | |
416 | { | |
417 | int result = 0; | |
418 | ||
419 | try | |
420 | { | |
421 | result = gdb_do_one_event (); | |
422 | } | |
423 | catch (const gdb_exception &ex) | |
424 | { | |
425 | exception_print (gdb_stderr, ex); | |
426 | ||
427 | /* If any exception escaped to here, we better enable | |
428 | stdin. Otherwise, any command that calls async_disable_stdin, | |
429 | and then throws, will leave stdin inoperable. */ | |
430 | SWITCH_THRU_ALL_UIS () | |
431 | { | |
432 | async_enable_stdin (); | |
433 | } | |
434 | /* If we long-jumped out of do_one_event, we probably didn't | |
435 | get around to resetting the prompt, which leaves readline | |
436 | in a messed-up state. Reset it here. */ | |
437 | current_ui->prompt_state = PROMPT_NEEDED; | |
438 | gdb::observers::command_error.notify (); | |
439 | /* This call looks bizarre, but it is required. If the user | |
440 | entered a command that caused an error, | |
441 | after_char_processing_hook won't be called from | |
442 | rl_callback_read_char_wrapper. Using a cleanup there | |
443 | won't work, since we want this function to be called | |
444 | after a new prompt is printed. */ | |
445 | if (after_char_processing_hook) | |
446 | (*after_char_processing_hook) (); | |
447 | /* Maybe better to set a flag to be checked somewhere as to | |
448 | whether display the prompt or not. */ | |
449 | } | |
450 | ||
451 | if (result < 0) | |
452 | break; | |
453 | } | |
454 | ||
455 | /* We are done with the event loop. There are no more event sources | |
456 | to listen to. So we exit GDB. */ | |
457 | return; | |
458 | } | |
459 | ||
460 | /* Call command_loop. */ | |
461 | ||
462 | /* Prevent inlining this function for the benefit of GDB's selftests | |
463 | in the testsuite. Those tests want to run GDB under GDB and stop | |
464 | here. */ | |
465 | static void captured_command_loop () __attribute__((noinline)); | |
466 | ||
467 | static void | |
468 | captured_command_loop () | |
469 | { | |
470 | struct ui *ui = current_ui; | |
471 | ||
472 | /* Top-level execution commands can be run in the background from | |
473 | here on. */ | |
474 | current_ui->async = 1; | |
475 | ||
476 | /* Give the interpreter a chance to print a prompt, if necessary */ | |
477 | if (ui->prompt_state != PROMPT_BLOCKED) | |
478 | interp_pre_command_loop (top_level_interpreter ()); | |
479 | ||
480 | /* Now it's time to start the event loop. */ | |
481 | start_event_loop (); | |
482 | ||
483 | /* If the command_loop returned, normally (rather than threw an | |
484 | error) we try to quit. If the quit is aborted, our caller | |
485 | catches the signal and restarts the command loop. */ | |
486 | quit_command (NULL, ui->instream == ui->stdin_stream); | |
487 | } | |
488 | ||
489 | /* Handle command errors thrown from within catch_command_errors. */ | |
490 | ||
491 | static int | |
492 | handle_command_errors (const struct gdb_exception &e) | |
493 | { | |
494 | if (e.reason < 0) | |
495 | { | |
496 | exception_print (gdb_stderr, e); | |
497 | ||
498 | /* If any exception escaped to here, we better enable stdin. | |
499 | Otherwise, any command that calls async_disable_stdin, and | |
500 | then throws, will leave stdin inoperable. */ | |
501 | async_enable_stdin (); | |
502 | return 0; | |
503 | } | |
504 | return 1; | |
505 | } | |
506 | ||
507 | /* Type of the command callback passed to the const | |
508 | catch_command_errors. */ | |
509 | ||
510 | typedef void (catch_command_errors_const_ftype) (const char *, int); | |
511 | ||
512 | /* Wrap calls to commands run before the event loop is started. */ | |
513 | ||
514 | static int | |
515 | catch_command_errors (catch_command_errors_const_ftype command, | |
516 | const char *arg, int from_tty, | |
517 | bool do_bp_actions = false) | |
518 | { | |
519 | try | |
520 | { | |
521 | int was_sync = current_ui->prompt_state == PROMPT_BLOCKED; | |
522 | ||
523 | command (arg, from_tty); | |
524 | ||
525 | maybe_wait_sync_command_done (was_sync); | |
526 | ||
527 | /* Do any commands attached to breakpoint we stopped at. */ | |
528 | if (do_bp_actions) | |
529 | bpstat_do_actions (); | |
530 | } | |
531 | catch (const gdb_exception &e) | |
532 | { | |
533 | return handle_command_errors (e); | |
534 | } | |
535 | ||
536 | return 1; | |
537 | } | |
538 | ||
539 | /* Adapter for symbol_file_add_main that translates 'from_tty' to a | |
540 | symfile_add_flags. */ | |
541 | ||
542 | static void | |
543 | symbol_file_add_main_adapter (const char *arg, int from_tty) | |
544 | { | |
545 | symfile_add_flags add_flags = 0; | |
546 | ||
547 | if (from_tty) | |
548 | add_flags |= SYMFILE_VERBOSE; | |
549 | ||
550 | symbol_file_add_main (arg, add_flags); | |
551 | } | |
552 | ||
553 | /* Perform validation of the '--readnow' and '--readnever' flags. */ | |
554 | ||
555 | static void | |
556 | validate_readnow_readnever () | |
557 | { | |
558 | if (readnever_symbol_files && readnow_symbol_files) | |
559 | { | |
560 | error (_("%s: '--readnow' and '--readnever' cannot be " | |
561 | "specified simultaneously"), | |
562 | gdb_program_name); | |
563 | } | |
564 | } | |
565 | ||
566 | /* Type of this option. */ | |
567 | enum cmdarg_kind | |
568 | { | |
569 | /* Option type -x. */ | |
570 | CMDARG_FILE, | |
571 | ||
572 | /* Option type -ex. */ | |
573 | CMDARG_COMMAND, | |
574 | ||
575 | /* Option type -ix. */ | |
576 | CMDARG_INIT_FILE, | |
577 | ||
578 | /* Option type -iex. */ | |
579 | CMDARG_INIT_COMMAND, | |
580 | ||
581 | /* Option type -eix. */ | |
582 | CMDARG_EARLYINIT_FILE, | |
583 | ||
584 | /* Option type -eiex. */ | |
585 | CMDARG_EARLYINIT_COMMAND | |
586 | }; | |
587 | ||
588 | /* Arguments of --command option and its counterpart. */ | |
589 | struct cmdarg | |
590 | { | |
591 | cmdarg (cmdarg_kind type_, char *string_) | |
592 | : type (type_), string (string_) | |
593 | {} | |
594 | ||
595 | /* Type of this option. */ | |
596 | enum cmdarg_kind type; | |
597 | ||
598 | /* Value of this option - filename or the GDB command itself. String memory | |
599 | is not owned by this structure despite it is 'const'. */ | |
600 | char *string; | |
601 | }; | |
602 | ||
603 | /* From CMDARG_VEC execute command files (matching FILE_TYPE) or commands | |
604 | (matching CMD_TYPE). Update the value in *RET if and scripts or | |
605 | commands are executed. */ | |
606 | ||
607 | static void | |
608 | execute_cmdargs (const std::vector<struct cmdarg> *cmdarg_vec, | |
609 | cmdarg_kind file_type, cmdarg_kind cmd_type, | |
610 | int *ret) | |
611 | { | |
612 | for (const auto &cmdarg_p : *cmdarg_vec) | |
613 | { | |
614 | if (cmdarg_p.type == file_type) | |
615 | *ret = catch_command_errors (source_script, cmdarg_p.string, | |
616 | !batch_flag); | |
617 | else if (cmdarg_p.type == cmd_type) | |
618 | *ret = catch_command_errors (execute_command, cmdarg_p.string, | |
619 | !batch_flag, true); | |
620 | } | |
621 | } | |
622 | ||
623 | static void | |
624 | captured_main_1 (struct captured_main_args *context) | |
625 | { | |
626 | int argc = context->argc; | |
627 | char **argv = context->argv; | |
628 | ||
629 | static int quiet = 0; | |
630 | static int set_args = 0; | |
631 | static int inhibit_home_gdbinit = 0; | |
632 | ||
633 | /* Pointers to various arguments from command line. */ | |
634 | char *symarg = NULL; | |
635 | char *execarg = NULL; | |
636 | char *pidarg = NULL; | |
637 | char *corearg = NULL; | |
638 | char *pid_or_core_arg = NULL; | |
639 | char *cdarg = NULL; | |
640 | char *ttyarg = NULL; | |
641 | ||
642 | /* These are static so that we can take their address in an | |
643 | initializer. */ | |
644 | static int print_help; | |
645 | static int print_version; | |
646 | static int print_configuration; | |
647 | ||
648 | /* Pointers to all arguments of --command option. */ | |
649 | std::vector<struct cmdarg> cmdarg_vec; | |
650 | ||
651 | /* All arguments of --directory option. */ | |
652 | std::vector<char *> dirarg; | |
653 | ||
654 | int i; | |
655 | int save_auto_load; | |
656 | int ret = 1; | |
657 | ||
658 | #ifdef HAVE_USEFUL_SBRK | |
659 | /* Set this before constructing scoped_command_stats. */ | |
660 | lim_at_start = (char *) sbrk (0); | |
661 | #endif | |
662 | ||
663 | scoped_command_stats stat_reporter (false); | |
664 | ||
665 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
666 | setlocale (LC_MESSAGES, ""); | |
667 | #endif | |
668 | #if defined (HAVE_SETLOCALE) | |
669 | setlocale (LC_CTYPE, ""); | |
670 | #endif | |
671 | #ifdef ENABLE_NLS | |
672 | bindtextdomain (PACKAGE, LOCALEDIR); | |
673 | textdomain (PACKAGE); | |
674 | #endif | |
675 | ||
676 | notice_open_fds (); | |
677 | ||
678 | #ifdef __MINGW32__ | |
679 | /* Ensure stderr is unbuffered. A Cygwin pty or pipe is implemented | |
680 | as a Windows pipe, and Windows buffers on pipes. */ | |
681 | setvbuf (stderr, NULL, _IONBF, BUFSIZ); | |
682 | #endif | |
683 | ||
684 | /* Note: `error' cannot be called before this point, because the | |
685 | caller will crash when trying to print the exception. */ | |
686 | main_ui = new ui (stdin, stdout, stderr); | |
687 | current_ui = main_ui; | |
688 | ||
689 | gdb_stdtargerr = gdb_stderr; /* for moment */ | |
690 | gdb_stdtargin = gdb_stdin; /* for moment */ | |
691 | ||
692 | if (bfd_init () != BFD_INIT_MAGIC) | |
693 | error (_("fatal error: libbfd ABI mismatch")); | |
694 | ||
695 | #ifdef __MINGW32__ | |
696 | /* On Windows, argv[0] is not necessarily set to absolute form when | |
697 | GDB is found along PATH, without which relocation doesn't work. */ | |
698 | gdb_program_name = windows_get_absolute_argv0 (argv[0]); | |
699 | #else | |
700 | gdb_program_name = xstrdup (argv[0]); | |
701 | #endif | |
702 | ||
703 | /* Prefix warning messages with the command name. */ | |
704 | gdb::unique_xmalloc_ptr<char> tmp_warn_preprint | |
705 | = xstrprintf ("%s: warning: ", gdb_program_name); | |
706 | warning_pre_print = tmp_warn_preprint.get (); | |
707 | ||
708 | current_directory = getcwd (NULL, 0); | |
709 | if (current_directory == NULL) | |
710 | perror_warning_with_name (_("error finding working directory")); | |
711 | ||
712 | /* Set the sysroot path. */ | |
713 | gdb_sysroot = relocate_gdb_directory (TARGET_SYSTEM_ROOT, | |
714 | TARGET_SYSTEM_ROOT_RELOCATABLE); | |
715 | ||
716 | if (gdb_sysroot.empty ()) | |
717 | gdb_sysroot = TARGET_SYSROOT_PREFIX; | |
718 | ||
719 | debug_file_directory | |
720 | = relocate_gdb_directory (DEBUGDIR, DEBUGDIR_RELOCATABLE); | |
721 | ||
722 | gdb_datadir = relocate_gdb_directory (GDB_DATADIR, | |
723 | GDB_DATADIR_RELOCATABLE); | |
724 | ||
725 | #ifdef WITH_PYTHON_LIBDIR | |
726 | python_libdir = relocate_gdb_directory (WITH_PYTHON_LIBDIR, | |
727 | PYTHON_LIBDIR_RELOCATABLE); | |
728 | #endif | |
729 | ||
730 | #ifdef RELOC_SRCDIR | |
731 | add_substitute_path_rule (RELOC_SRCDIR, | |
732 | make_relative_prefix (gdb_program_name, BINDIR, | |
733 | RELOC_SRCDIR)); | |
734 | #endif | |
735 | ||
736 | /* There will always be an interpreter. Either the one passed into | |
737 | this captured main, or one specified by the user at start up, or | |
738 | the console. Initialize the interpreter to the one requested by | |
739 | the application. */ | |
740 | interpreter_p = xstrdup (context->interpreter_p); | |
741 | ||
742 | /* Parse arguments and options. */ | |
743 | { | |
744 | int c; | |
745 | /* When var field is 0, use flag field to record the equivalent | |
746 | short option (or arbitrary numbers starting at 10 for those | |
747 | with no equivalent). */ | |
748 | enum { | |
749 | OPT_SE = 10, | |
750 | OPT_CD, | |
751 | OPT_ANNOTATE, | |
752 | OPT_STATISTICS, | |
753 | OPT_TUI, | |
754 | OPT_NOWINDOWS, | |
755 | OPT_WINDOWS, | |
756 | OPT_IX, | |
757 | OPT_IEX, | |
758 | OPT_EIX, | |
759 | OPT_EIEX, | |
760 | OPT_READNOW, | |
761 | OPT_READNEVER | |
762 | }; | |
763 | /* This struct requires int* in the struct, but write_files is a bool. | |
764 | So use this temporary int that we write back after argument parsing. */ | |
765 | int write_files_1 = 0; | |
766 | static struct option long_options[] = | |
767 | { | |
768 | {"tui", no_argument, 0, OPT_TUI}, | |
769 | {"dbx", no_argument, &dbx_commands, 1}, | |
770 | {"readnow", no_argument, NULL, OPT_READNOW}, | |
771 | {"readnever", no_argument, NULL, OPT_READNEVER}, | |
772 | {"r", no_argument, NULL, OPT_READNOW}, | |
773 | {"quiet", no_argument, &quiet, 1}, | |
774 | {"q", no_argument, &quiet, 1}, | |
775 | {"silent", no_argument, &quiet, 1}, | |
776 | {"nh", no_argument, &inhibit_home_gdbinit, 1}, | |
777 | {"nx", no_argument, &inhibit_gdbinit, 1}, | |
778 | {"n", no_argument, &inhibit_gdbinit, 1}, | |
779 | {"batch-silent", no_argument, 0, 'B'}, | |
780 | {"batch", no_argument, &batch_flag, 1}, | |
781 | ||
782 | /* This is a synonym for "--annotate=1". --annotate is now | |
783 | preferred, but keep this here for a long time because people | |
784 | will be running emacses which use --fullname. */ | |
785 | {"fullname", no_argument, 0, 'f'}, | |
786 | {"f", no_argument, 0, 'f'}, | |
787 | ||
788 | {"annotate", required_argument, 0, OPT_ANNOTATE}, | |
789 | {"help", no_argument, &print_help, 1}, | |
790 | {"se", required_argument, 0, OPT_SE}, | |
791 | {"symbols", required_argument, 0, 's'}, | |
792 | {"s", required_argument, 0, 's'}, | |
793 | {"exec", required_argument, 0, 'e'}, | |
794 | {"e", required_argument, 0, 'e'}, | |
795 | {"core", required_argument, 0, 'c'}, | |
796 | {"c", required_argument, 0, 'c'}, | |
797 | {"pid", required_argument, 0, 'p'}, | |
798 | {"p", required_argument, 0, 'p'}, | |
799 | {"command", required_argument, 0, 'x'}, | |
800 | {"eval-command", required_argument, 0, 'X'}, | |
801 | {"version", no_argument, &print_version, 1}, | |
802 | {"configuration", no_argument, &print_configuration, 1}, | |
803 | {"x", required_argument, 0, 'x'}, | |
804 | {"ex", required_argument, 0, 'X'}, | |
805 | {"init-command", required_argument, 0, OPT_IX}, | |
806 | {"init-eval-command", required_argument, 0, OPT_IEX}, | |
807 | {"ix", required_argument, 0, OPT_IX}, | |
808 | {"iex", required_argument, 0, OPT_IEX}, | |
809 | {"early-init-command", required_argument, 0, OPT_EIX}, | |
810 | {"early-init-eval-command", required_argument, 0, OPT_EIEX}, | |
811 | {"eix", required_argument, 0, OPT_EIX}, | |
812 | {"eiex", required_argument, 0, OPT_EIEX}, | |
813 | #ifdef GDBTK | |
814 | {"tclcommand", required_argument, 0, 'z'}, | |
815 | {"enable-external-editor", no_argument, 0, 'y'}, | |
816 | {"editor-command", required_argument, 0, 'w'}, | |
817 | #endif | |
818 | {"ui", required_argument, 0, 'i'}, | |
819 | {"interpreter", required_argument, 0, 'i'}, | |
820 | {"i", required_argument, 0, 'i'}, | |
821 | {"directory", required_argument, 0, 'd'}, | |
822 | {"d", required_argument, 0, 'd'}, | |
823 | {"data-directory", required_argument, 0, 'D'}, | |
824 | {"D", required_argument, 0, 'D'}, | |
825 | {"cd", required_argument, 0, OPT_CD}, | |
826 | {"tty", required_argument, 0, 't'}, | |
827 | {"baud", required_argument, 0, 'b'}, | |
828 | {"b", required_argument, 0, 'b'}, | |
829 | {"nw", no_argument, NULL, OPT_NOWINDOWS}, | |
830 | {"nowindows", no_argument, NULL, OPT_NOWINDOWS}, | |
831 | {"w", no_argument, NULL, OPT_WINDOWS}, | |
832 | {"windows", no_argument, NULL, OPT_WINDOWS}, | |
833 | {"statistics", no_argument, 0, OPT_STATISTICS}, | |
834 | {"write", no_argument, &write_files_1, 1}, | |
835 | {"args", no_argument, &set_args, 1}, | |
836 | {"l", required_argument, 0, 'l'}, | |
837 | {"return-child-result", no_argument, &return_child_result, 1}, | |
838 | {0, no_argument, 0, 0} | |
839 | }; | |
840 | ||
841 | while (1) | |
842 | { | |
843 | int option_index; | |
844 | ||
845 | c = getopt_long_only (argc, argv, "", | |
846 | long_options, &option_index); | |
847 | if (c == EOF || set_args) | |
848 | break; | |
849 | ||
850 | /* Long option that takes an argument. */ | |
851 | if (c == 0 && long_options[option_index].flag == 0) | |
852 | c = long_options[option_index].val; | |
853 | ||
854 | switch (c) | |
855 | { | |
856 | case 0: | |
857 | /* Long option that just sets a flag. */ | |
858 | break; | |
859 | case OPT_SE: | |
860 | symarg = optarg; | |
861 | execarg = optarg; | |
862 | break; | |
863 | case OPT_CD: | |
864 | cdarg = optarg; | |
865 | break; | |
866 | case OPT_ANNOTATE: | |
867 | /* FIXME: what if the syntax is wrong (e.g. not digits)? */ | |
868 | annotation_level = atoi (optarg); | |
869 | break; | |
870 | case OPT_STATISTICS: | |
871 | /* Enable the display of both time and space usage. */ | |
872 | set_per_command_time (1); | |
873 | set_per_command_space (1); | |
874 | break; | |
875 | case OPT_TUI: | |
876 | /* --tui is equivalent to -i=tui. */ | |
877 | #ifdef TUI | |
878 | xfree (interpreter_p); | |
879 | interpreter_p = xstrdup (INTERP_TUI); | |
880 | #else | |
881 | error (_("%s: TUI mode is not supported"), gdb_program_name); | |
882 | #endif | |
883 | break; | |
884 | case OPT_WINDOWS: | |
885 | /* FIXME: cagney/2003-03-01: Not sure if this option is | |
886 | actually useful, and if it is, what it should do. */ | |
887 | #ifdef GDBTK | |
888 | /* --windows is equivalent to -i=insight. */ | |
889 | xfree (interpreter_p); | |
890 | interpreter_p = xstrdup (INTERP_INSIGHT); | |
891 | #endif | |
892 | break; | |
893 | case OPT_NOWINDOWS: | |
894 | /* -nw is equivalent to -i=console. */ | |
895 | xfree (interpreter_p); | |
896 | interpreter_p = xstrdup (INTERP_CONSOLE); | |
897 | break; | |
898 | case 'f': | |
899 | annotation_level = 1; | |
900 | break; | |
901 | case 's': | |
902 | symarg = optarg; | |
903 | break; | |
904 | case 'e': | |
905 | execarg = optarg; | |
906 | break; | |
907 | case 'c': | |
908 | corearg = optarg; | |
909 | break; | |
910 | case 'p': | |
911 | pidarg = optarg; | |
912 | break; | |
913 | case 'x': | |
914 | cmdarg_vec.emplace_back (CMDARG_FILE, optarg); | |
915 | break; | |
916 | case 'X': | |
917 | cmdarg_vec.emplace_back (CMDARG_COMMAND, optarg); | |
918 | break; | |
919 | case OPT_IX: | |
920 | cmdarg_vec.emplace_back (CMDARG_INIT_FILE, optarg); | |
921 | break; | |
922 | case OPT_IEX: | |
923 | cmdarg_vec.emplace_back (CMDARG_INIT_COMMAND, optarg); | |
924 | break; | |
925 | case OPT_EIX: | |
926 | cmdarg_vec.emplace_back (CMDARG_EARLYINIT_FILE, optarg); | |
927 | break; | |
928 | case OPT_EIEX: | |
929 | cmdarg_vec.emplace_back (CMDARG_EARLYINIT_COMMAND, optarg); | |
930 | break; | |
931 | case 'B': | |
932 | batch_flag = batch_silent = 1; | |
933 | gdb_stdout = new null_file (); | |
934 | break; | |
935 | case 'D': | |
936 | if (optarg[0] == '\0') | |
937 | error (_("%s: empty path for `--data-directory'"), | |
938 | gdb_program_name); | |
939 | set_gdb_data_directory (optarg); | |
940 | gdb_datadir_provided = 1; | |
941 | break; | |
942 | #ifdef GDBTK | |
943 | case 'z': | |
944 | { | |
945 | if (!gdbtk_test (optarg)) | |
946 | error (_("%s: unable to load tclcommand file \"%s\""), | |
947 | gdb_program_name, optarg); | |
948 | break; | |
949 | } | |
950 | case 'y': | |
951 | /* Backwards compatibility only. */ | |
952 | break; | |
953 | case 'w': | |
954 | { | |
955 | /* Set the external editor commands when gdb is farming out files | |
956 | to be edited by another program. */ | |
957 | external_editor_command = xstrdup (optarg); | |
958 | break; | |
959 | } | |
960 | #endif /* GDBTK */ | |
961 | case 'i': | |
962 | xfree (interpreter_p); | |
963 | interpreter_p = xstrdup (optarg); | |
964 | break; | |
965 | case 'd': | |
966 | dirarg.push_back (optarg); | |
967 | break; | |
968 | case 't': | |
969 | ttyarg = optarg; | |
970 | break; | |
971 | case 'q': | |
972 | quiet = 1; | |
973 | break; | |
974 | case 'b': | |
975 | { | |
976 | int rate; | |
977 | char *p; | |
978 | ||
979 | rate = strtol (optarg, &p, 0); | |
980 | if (rate == 0 && p == optarg) | |
981 | warning (_("could not set baud rate to `%s'."), | |
982 | optarg); | |
983 | else | |
984 | baud_rate = rate; | |
985 | } | |
986 | break; | |
987 | case 'l': | |
988 | { | |
989 | int timeout; | |
990 | char *p; | |
991 | ||
992 | timeout = strtol (optarg, &p, 0); | |
993 | if (timeout == 0 && p == optarg) | |
994 | warning (_("could not set timeout limit to `%s'."), | |
995 | optarg); | |
996 | else | |
997 | remote_timeout = timeout; | |
998 | } | |
999 | break; | |
1000 | ||
1001 | case OPT_READNOW: | |
1002 | { | |
1003 | readnow_symbol_files = 1; | |
1004 | validate_readnow_readnever (); | |
1005 | } | |
1006 | break; | |
1007 | ||
1008 | case OPT_READNEVER: | |
1009 | { | |
1010 | readnever_symbol_files = 1; | |
1011 | validate_readnow_readnever (); | |
1012 | } | |
1013 | break; | |
1014 | ||
1015 | case '?': | |
1016 | error (_("Use `%s --help' for a complete list of options."), | |
1017 | gdb_program_name); | |
1018 | } | |
1019 | } | |
1020 | write_files = (write_files_1 != 0); | |
1021 | ||
1022 | if (batch_flag) | |
1023 | { | |
1024 | quiet = 1; | |
1025 | ||
1026 | /* Disable all output styling when running in batch mode. */ | |
1027 | cli_styling = 0; | |
1028 | } | |
1029 | } | |
1030 | ||
1031 | save_original_signals_state (quiet); | |
1032 | ||
1033 | /* Try to set up an alternate signal stack for SIGSEGV handlers. */ | |
1034 | gdb::alternate_signal_stack signal_stack; | |
1035 | ||
1036 | /* Initialize all files. */ | |
1037 | gdb_init (); | |
1038 | ||
1039 | /* Process early init files and early init options from the command line. */ | |
1040 | if (!inhibit_gdbinit) | |
1041 | { | |
1042 | std::string home_gdbearlyinit; | |
1043 | get_earlyinit_files (&home_gdbearlyinit); | |
1044 | if (!home_gdbearlyinit.empty () && !inhibit_home_gdbinit) | |
1045 | ret = catch_command_errors (source_script, | |
1046 | home_gdbearlyinit.c_str (), 0); | |
1047 | } | |
1048 | execute_cmdargs (&cmdarg_vec, CMDARG_EARLYINIT_FILE, | |
1049 | CMDARG_EARLYINIT_COMMAND, &ret); | |
1050 | ||
1051 | /* Initialize the extension languages. */ | |
1052 | ext_lang_initialization (); | |
1053 | ||
1054 | /* Recheck if we're starting up quietly after processing the startup | |
1055 | scripts and commands. */ | |
1056 | if (!quiet) | |
1057 | quiet = check_quiet_mode (); | |
1058 | ||
1059 | /* Now that gdb_init has created the initial inferior, we're in | |
1060 | position to set args for that inferior. */ | |
1061 | if (set_args) | |
1062 | { | |
1063 | /* The remaining options are the command-line options for the | |
1064 | inferior. The first one is the sym/exec file, and the rest | |
1065 | are arguments. */ | |
1066 | if (optind >= argc) | |
1067 | error (_("%s: `--args' specified but no program specified"), | |
1068 | gdb_program_name); | |
1069 | ||
1070 | symarg = argv[optind]; | |
1071 | execarg = argv[optind]; | |
1072 | ++optind; | |
1073 | set_inferior_args_vector (argc - optind, &argv[optind]); | |
1074 | } | |
1075 | else | |
1076 | { | |
1077 | /* OK, that's all the options. */ | |
1078 | ||
1079 | /* The first argument, if specified, is the name of the | |
1080 | executable. */ | |
1081 | if (optind < argc) | |
1082 | { | |
1083 | symarg = argv[optind]; | |
1084 | execarg = argv[optind]; | |
1085 | optind++; | |
1086 | } | |
1087 | ||
1088 | /* If the user hasn't already specified a PID or the name of a | |
1089 | core file, then a second optional argument is allowed. If | |
1090 | present, this argument should be interpreted as either a | |
1091 | PID or a core file, whichever works. */ | |
1092 | if (pidarg == NULL && corearg == NULL && optind < argc) | |
1093 | { | |
1094 | pid_or_core_arg = argv[optind]; | |
1095 | optind++; | |
1096 | } | |
1097 | ||
1098 | /* Any argument left on the command line is unexpected and | |
1099 | will be ignored. Inform the user. */ | |
1100 | if (optind < argc) | |
1101 | fprintf_unfiltered (gdb_stderr, | |
1102 | _("Excess command line " | |
1103 | "arguments ignored. (%s%s)\n"), | |
1104 | argv[optind], | |
1105 | (optind == argc - 1) ? "" : " ..."); | |
1106 | } | |
1107 | ||
1108 | /* Lookup gdbinit files. Note that the gdbinit file name may be | |
1109 | overridden during file initialization, so get_init_files should be | |
1110 | called after gdb_init. */ | |
1111 | std::vector<std::string> system_gdbinit; | |
1112 | std::string home_gdbinit; | |
1113 | std::string local_gdbinit; | |
1114 | get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit); | |
1115 | ||
1116 | /* Do these (and anything which might call wrap_here or *_filtered) | |
1117 | after initialize_all_files() but before the interpreter has been | |
1118 | installed. Otherwize the help/version messages will be eaten by | |
1119 | the interpreter's output handler. */ | |
1120 | ||
1121 | if (print_version) | |
1122 | { | |
1123 | print_gdb_version (gdb_stdout, false); | |
1124 | gdb_stdout->wrap_here (0); | |
1125 | printf_filtered ("\n"); | |
1126 | exit (0); | |
1127 | } | |
1128 | ||
1129 | if (print_help) | |
1130 | { | |
1131 | print_gdb_help (gdb_stdout); | |
1132 | exit (0); | |
1133 | } | |
1134 | ||
1135 | if (print_configuration) | |
1136 | { | |
1137 | print_gdb_configuration (gdb_stdout); | |
1138 | gdb_stdout->wrap_here (0); | |
1139 | printf_filtered ("\n"); | |
1140 | exit (0); | |
1141 | } | |
1142 | ||
1143 | /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets | |
1144 | GDB retain the old MI1 interpreter startup behavior. Output the | |
1145 | copyright message before the interpreter is installed. That way | |
1146 | it isn't encapsulated in MI output. */ | |
1147 | if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0) | |
1148 | { | |
1149 | /* Print all the junk at the top, with trailing "..." if we are | |
1150 | about to read a symbol file (possibly slowly). */ | |
1151 | print_gdb_version (gdb_stdout, true); | |
1152 | if (symarg) | |
1153 | printf_filtered (".."); | |
1154 | gdb_stdout->wrap_here (0); | |
1155 | printf_filtered ("\n"); | |
1156 | gdb_flush (gdb_stdout); /* Force to screen during slow | |
1157 | operations. */ | |
1158 | } | |
1159 | ||
1160 | /* Install the default UI. All the interpreters should have had a | |
1161 | look at things by now. Initialize the default interpreter. */ | |
1162 | set_top_level_interpreter (interpreter_p); | |
1163 | ||
1164 | /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets | |
1165 | GDB retain the old MI1 interpreter startup behavior. Output the | |
1166 | copyright message after the interpreter is installed when it is | |
1167 | any sane interpreter. */ | |
1168 | if (!quiet && !current_interp_named_p (INTERP_MI1)) | |
1169 | { | |
1170 | /* Print all the junk at the top, with trailing "..." if we are | |
1171 | about to read a symbol file (possibly slowly). */ | |
1172 | print_gdb_version (gdb_stdout, true); | |
1173 | if (symarg) | |
1174 | printf_filtered (".."); | |
1175 | gdb_stdout->wrap_here (0); | |
1176 | printf_filtered ("\n"); | |
1177 | gdb_flush (gdb_stdout); /* Force to screen during slow | |
1178 | operations. */ | |
1179 | } | |
1180 | ||
1181 | /* Set off error and warning messages with a blank line. */ | |
1182 | tmp_warn_preprint.reset (); | |
1183 | warning_pre_print = _("\nwarning: "); | |
1184 | ||
1185 | /* Read and execute the system-wide gdbinit file, if it exists. | |
1186 | This is done *before* all the command line arguments are | |
1187 | processed; it sets global parameters, which are independent of | |
1188 | what file you are debugging or what directory you are in. */ | |
1189 | if (!system_gdbinit.empty () && !inhibit_gdbinit) | |
1190 | { | |
1191 | for (const std::string &file : system_gdbinit) | |
1192 | ret = catch_command_errors (source_script, file.c_str (), 0); | |
1193 | } | |
1194 | ||
1195 | /* Read and execute $HOME/.gdbinit file, if it exists. This is done | |
1196 | *before* all the command line arguments are processed; it sets | |
1197 | global parameters, which are independent of what file you are | |
1198 | debugging or what directory you are in. */ | |
1199 | ||
1200 | if (!home_gdbinit.empty () && !inhibit_gdbinit && !inhibit_home_gdbinit) | |
1201 | ret = catch_command_errors (source_script, home_gdbinit.c_str (), 0); | |
1202 | ||
1203 | /* Process '-ix' and '-iex' options early. */ | |
1204 | execute_cmdargs (&cmdarg_vec, CMDARG_INIT_FILE, CMDARG_INIT_COMMAND, &ret); | |
1205 | ||
1206 | /* Now perform all the actions indicated by the arguments. */ | |
1207 | if (cdarg != NULL) | |
1208 | { | |
1209 | ret = catch_command_errors (cd_command, cdarg, 0); | |
1210 | } | |
1211 | ||
1212 | for (i = 0; i < dirarg.size (); i++) | |
1213 | ret = catch_command_errors (directory_switch, dirarg[i], 0); | |
1214 | ||
1215 | /* Skip auto-loading section-specified scripts until we've sourced | |
1216 | local_gdbinit (which is often used to augment the source search | |
1217 | path). */ | |
1218 | save_auto_load = global_auto_load; | |
1219 | global_auto_load = 0; | |
1220 | ||
1221 | if (execarg != NULL | |
1222 | && symarg != NULL | |
1223 | && strcmp (execarg, symarg) == 0) | |
1224 | { | |
1225 | /* The exec file and the symbol-file are the same. If we can't | |
1226 | open it, better only print one error message. | |
1227 | catch_command_errors returns non-zero on success! */ | |
1228 | ret = catch_command_errors (exec_file_attach, execarg, | |
1229 | !batch_flag); | |
1230 | if (ret != 0) | |
1231 | ret = catch_command_errors (symbol_file_add_main_adapter, | |
1232 | symarg, !batch_flag); | |
1233 | } | |
1234 | else | |
1235 | { | |
1236 | if (execarg != NULL) | |
1237 | ret = catch_command_errors (exec_file_attach, execarg, | |
1238 | !batch_flag); | |
1239 | if (symarg != NULL) | |
1240 | ret = catch_command_errors (symbol_file_add_main_adapter, | |
1241 | symarg, !batch_flag); | |
1242 | } | |
1243 | ||
1244 | if (corearg && pidarg) | |
1245 | error (_("Can't attach to process and specify " | |
1246 | "a core file at the same time.")); | |
1247 | ||
1248 | if (corearg != NULL) | |
1249 | { | |
1250 | ret = catch_command_errors (core_file_command, corearg, | |
1251 | !batch_flag); | |
1252 | } | |
1253 | else if (pidarg != NULL) | |
1254 | { | |
1255 | ret = catch_command_errors (attach_command, pidarg, !batch_flag); | |
1256 | } | |
1257 | else if (pid_or_core_arg) | |
1258 | { | |
1259 | /* The user specified 'gdb program pid' or gdb program core'. | |
1260 | If pid_or_core_arg's first character is a digit, try attach | |
1261 | first and then corefile. Otherwise try just corefile. */ | |
1262 | ||
1263 | if (isdigit (pid_or_core_arg[0])) | |
1264 | { | |
1265 | ret = catch_command_errors (attach_command, pid_or_core_arg, | |
1266 | !batch_flag); | |
1267 | if (ret == 0) | |
1268 | ret = catch_command_errors (core_file_command, | |
1269 | pid_or_core_arg, | |
1270 | !batch_flag); | |
1271 | } | |
1272 | else | |
1273 | { | |
1274 | /* Can't be a pid, better be a corefile. */ | |
1275 | ret = catch_command_errors (core_file_command, | |
1276 | pid_or_core_arg, | |
1277 | !batch_flag); | |
1278 | } | |
1279 | } | |
1280 | ||
1281 | if (ttyarg != NULL) | |
1282 | current_inferior ()->set_tty (ttyarg); | |
1283 | ||
1284 | /* Error messages should no longer be distinguished with extra output. */ | |
1285 | warning_pre_print = _("warning: "); | |
1286 | ||
1287 | /* Read the .gdbinit file in the current directory, *if* it isn't | |
1288 | the same as the $HOME/.gdbinit file (it should exist, also). */ | |
1289 | if (!local_gdbinit.empty ()) | |
1290 | { | |
1291 | auto_load_local_gdbinit_pathname | |
1292 | = gdb_realpath (local_gdbinit.c_str ()).release (); | |
1293 | ||
1294 | if (!inhibit_gdbinit && auto_load_local_gdbinit) | |
1295 | { | |
1296 | auto_load_debug_printf ("Loading .gdbinit file \"%s\".", | |
1297 | local_gdbinit.c_str ()); | |
1298 | ||
1299 | if (file_is_auto_load_safe (local_gdbinit.c_str ())) | |
1300 | { | |
1301 | auto_load_local_gdbinit_loaded = 1; | |
1302 | ||
1303 | ret = catch_command_errors (source_script, local_gdbinit.c_str (), 0); | |
1304 | } | |
1305 | } | |
1306 | } | |
1307 | ||
1308 | /* Now that all .gdbinit's have been read and all -d options have been | |
1309 | processed, we can read any scripts mentioned in SYMARG. | |
1310 | We wait until now because it is common to add to the source search | |
1311 | path in local_gdbinit. */ | |
1312 | global_auto_load = save_auto_load; | |
1313 | for (objfile *objfile : current_program_space->objfiles ()) | |
1314 | load_auto_scripts_for_objfile (objfile); | |
1315 | ||
1316 | /* Process '-x' and '-ex' options. */ | |
1317 | execute_cmdargs (&cmdarg_vec, CMDARG_FILE, CMDARG_COMMAND, &ret); | |
1318 | ||
1319 | /* Read in the old history after all the command files have been | |
1320 | read. */ | |
1321 | init_history (); | |
1322 | ||
1323 | if (batch_flag) | |
1324 | { | |
1325 | int error_status = EXIT_FAILURE; | |
1326 | int *exit_arg = ret == 0 ? &error_status : NULL; | |
1327 | ||
1328 | /* We have hit the end of the batch file. */ | |
1329 | quit_force (exit_arg, 0); | |
1330 | } | |
1331 | } | |
1332 | ||
1333 | static void | |
1334 | captured_main (void *data) | |
1335 | { | |
1336 | struct captured_main_args *context = (struct captured_main_args *) data; | |
1337 | ||
1338 | captured_main_1 (context); | |
1339 | ||
1340 | /* NOTE: cagney/1999-11-07: There is probably no reason for not | |
1341 | moving this loop and the code found in captured_command_loop() | |
1342 | into the command_loop() proper. The main thing holding back that | |
1343 | change - SET_TOP_LEVEL() - has been eliminated. */ | |
1344 | while (1) | |
1345 | { | |
1346 | try | |
1347 | { | |
1348 | captured_command_loop (); | |
1349 | } | |
1350 | catch (const gdb_exception &ex) | |
1351 | { | |
1352 | exception_print (gdb_stderr, ex); | |
1353 | } | |
1354 | } | |
1355 | /* No exit -- exit is through quit_command. */ | |
1356 | } | |
1357 | ||
1358 | int | |
1359 | gdb_main (struct captured_main_args *args) | |
1360 | { | |
1361 | try | |
1362 | { | |
1363 | captured_main (args); | |
1364 | } | |
1365 | catch (const gdb_exception &ex) | |
1366 | { | |
1367 | exception_print (gdb_stderr, ex); | |
1368 | } | |
1369 | ||
1370 | /* The only way to end up here is by an error (normal exit is | |
1371 | handled by quit_force()), hence always return an error status. */ | |
1372 | return 1; | |
1373 | } | |
1374 | ||
1375 | ||
1376 | /* Don't use *_filtered for printing help. We don't want to prompt | |
1377 | for continue no matter how small the screen or how much we're going | |
1378 | to print. */ | |
1379 | ||
1380 | static void | |
1381 | print_gdb_help (struct ui_file *stream) | |
1382 | { | |
1383 | std::vector<std::string> system_gdbinit; | |
1384 | std::string home_gdbinit; | |
1385 | std::string local_gdbinit; | |
1386 | std::string home_gdbearlyinit; | |
1387 | ||
1388 | get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit); | |
1389 | get_earlyinit_files (&home_gdbearlyinit); | |
1390 | ||
1391 | /* Note: The options in the list below are only approximately sorted | |
1392 | in the alphabetical order, so as to group closely related options | |
1393 | together. */ | |
1394 | fputs_unfiltered (_("\ | |
1395 | This is the GNU debugger. Usage:\n\n\ | |
1396 | gdb [options] [executable-file [core-file or process-id]]\n\ | |
1397 | gdb [options] --args executable-file [inferior-arguments ...]\n\n\ | |
1398 | "), stream); | |
1399 | fputs_unfiltered (_("\ | |
1400 | Selection of debuggee and its files:\n\n\ | |
1401 | --args Arguments after executable-file are passed to inferior.\n\ | |
1402 | --core=COREFILE Analyze the core dump COREFILE.\n\ | |
1403 | --exec=EXECFILE Use EXECFILE as the executable.\n\ | |
1404 | --pid=PID Attach to running process PID.\n\ | |
1405 | --directory=DIR Search for source files in DIR.\n\ | |
1406 | --se=FILE Use FILE as symbol file and executable file.\n\ | |
1407 | --symbols=SYMFILE Read symbols from SYMFILE.\n\ | |
1408 | --readnow Fully read symbol files on first access.\n\ | |
1409 | --readnever Do not read symbol files.\n\ | |
1410 | --write Set writing into executable and core files.\n\n\ | |
1411 | "), stream); | |
1412 | fputs_unfiltered (_("\ | |
1413 | Initial commands and command files:\n\n\ | |
1414 | --command=FILE, -x Execute GDB commands from FILE.\n\ | |
1415 | --init-command=FILE, -ix\n\ | |
1416 | Like -x but execute commands before loading inferior.\n\ | |
1417 | --eval-command=COMMAND, -ex\n\ | |
1418 | Execute a single GDB command.\n\ | |
1419 | May be used multiple times and in conjunction\n\ | |
1420 | with --command.\n\ | |
1421 | --init-eval-command=COMMAND, -iex\n\ | |
1422 | Like -ex but before loading inferior.\n\ | |
1423 | --nh Do not read ~/.gdbinit.\n\ | |
1424 | --nx Do not read any .gdbinit files in any directory.\n\n\ | |
1425 | "), stream); | |
1426 | fputs_unfiltered (_("\ | |
1427 | Output and user interface control:\n\n\ | |
1428 | --fullname Output information used by emacs-GDB interface.\n\ | |
1429 | --interpreter=INTERP\n\ | |
1430 | Select a specific interpreter / user interface.\n\ | |
1431 | --tty=TTY Use TTY for input/output by the program being debugged.\n\ | |
1432 | -w Use the GUI interface.\n\ | |
1433 | --nw Do not use the GUI interface.\n\ | |
1434 | "), stream); | |
1435 | #if defined(TUI) | |
1436 | fputs_unfiltered (_("\ | |
1437 | --tui Use a terminal user interface.\n\ | |
1438 | "), stream); | |
1439 | #endif | |
1440 | fputs_unfiltered (_("\ | |
1441 | --dbx DBX compatibility mode.\n\ | |
1442 | -q, --quiet, --silent\n\ | |
1443 | Do not print version number on startup.\n\n\ | |
1444 | "), stream); | |
1445 | fputs_unfiltered (_("\ | |
1446 | Operating modes:\n\n\ | |
1447 | --batch Exit after processing options.\n\ | |
1448 | --batch-silent Like --batch, but suppress all gdb stdout output.\n\ | |
1449 | --return-child-result\n\ | |
1450 | GDB exit code will be the child's exit code.\n\ | |
1451 | --configuration Print details about GDB configuration and then exit.\n\ | |
1452 | --help Print this message and then exit.\n\ | |
1453 | --version Print version information and then exit.\n\n\ | |
1454 | Remote debugging options:\n\n\ | |
1455 | -b BAUDRATE Set serial port baud rate used for remote debugging.\n\ | |
1456 | -l TIMEOUT Set timeout in seconds for remote debugging.\n\n\ | |
1457 | Other options:\n\n\ | |
1458 | --cd=DIR Change current directory to DIR.\n\ | |
1459 | --data-directory=DIR, -D\n\ | |
1460 | Set GDB's data-directory to DIR.\n\ | |
1461 | "), stream); | |
1462 | fputs_unfiltered (_("\n\ | |
1463 | At startup, GDB reads the following early init files and executes their\n\ | |
1464 | commands:\n\ | |
1465 | "), stream); | |
1466 | if (!home_gdbearlyinit.empty ()) | |
1467 | fprintf_unfiltered (stream, _("\ | |
1468 | * user-specific early init file: %s\n\ | |
1469 | "), home_gdbearlyinit.c_str ()); | |
1470 | if (home_gdbearlyinit.empty ()) | |
1471 | fprintf_unfiltered (stream, _("\ | |
1472 | None found.\n")); | |
1473 | fputs_unfiltered (_("\n\ | |
1474 | At startup, GDB reads the following init files and executes their commands:\n\ | |
1475 | "), stream); | |
1476 | if (!system_gdbinit.empty ()) | |
1477 | { | |
1478 | std::string output; | |
1479 | for (size_t idx = 0; idx < system_gdbinit.size (); ++idx) | |
1480 | { | |
1481 | output += system_gdbinit[idx]; | |
1482 | if (idx < system_gdbinit.size () - 1) | |
1483 | output += ", "; | |
1484 | } | |
1485 | fprintf_unfiltered (stream, _("\ | |
1486 | * system-wide init files: %s\n\ | |
1487 | "), output.c_str ()); | |
1488 | } | |
1489 | if (!home_gdbinit.empty ()) | |
1490 | fprintf_unfiltered (stream, _("\ | |
1491 | * user-specific init file: %s\n\ | |
1492 | "), home_gdbinit.c_str ()); | |
1493 | if (!local_gdbinit.empty ()) | |
1494 | fprintf_unfiltered (stream, _("\ | |
1495 | * local init file (see also 'set auto-load local-gdbinit'): ./%s\n\ | |
1496 | "), local_gdbinit.c_str ()); | |
1497 | if (system_gdbinit.empty () && home_gdbinit.empty () | |
1498 | && local_gdbinit.empty ()) | |
1499 | fprintf_unfiltered (stream, _("\ | |
1500 | None found.\n")); | |
1501 | fputs_unfiltered (_("\n\ | |
1502 | For more information, type \"help\" from within GDB, or consult the\n\ | |
1503 | GDB manual (available as on-line info or a printed manual).\n\ | |
1504 | "), stream); | |
1505 | if (REPORT_BUGS_TO[0] && stream == gdb_stdout) | |
1506 | fprintf_unfiltered (stream, _("\n\ | |
1507 | Report bugs to %s.\n\ | |
1508 | "), REPORT_BUGS_TO); | |
1509 | if (stream == gdb_stdout) | |
1510 | fprintf_unfiltered (stream, _("\n\ | |
1511 | You can ask GDB-related questions on the GDB users mailing list\n\ | |
1512 | (gdb@sourceware.org) or on GDB's IRC channel (#gdb on Freenode).\n")); | |
1513 | } |