1 /* Top level stuff for GDB, the GNU debugger.
3 Copyright (C) 1986-2005, 2007-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
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.
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.
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/>. */
27 #include "exceptions.h"
30 #include <sys/types.h>
34 #include "gdb_string.h"
35 #include "event-loop.h"
41 #include "cli/cli-cmds.h"
42 #include "python/python.h"
45 /* The selected interpreter. This will be used as a set command
46 variable, so it should always be malloc'ed - since
47 do_setshow_command will free it. */
50 /* Whether xdb commands will be handled. */
53 /* Whether dbx commands will be handled. */
56 /* System root path, used to find libraries etc. */
57 char *gdb_sysroot = 0;
59 /* GDB datadir, used to store data files. */
60 char *gdb_datadir = 0;
62 /* If gdb was configured with --with-python=/path,
63 the possibly relocated path to python's lib directory. */
64 char *python_libdir = 0;
66 struct ui_file *gdb_stdout;
67 struct ui_file *gdb_stderr;
68 struct ui_file *gdb_stdlog;
69 struct ui_file *gdb_stdin;
70 /* Target IO streams. */
71 struct ui_file *gdb_stdtargin;
72 struct ui_file *gdb_stdtarg;
73 struct ui_file *gdb_stdtargerr;
75 /* True if --batch or --batch-silent was seen. */
78 /* Support for the --batch-silent option. */
81 /* Support for --return-child-result option.
82 Set the default to -1 to return error in the case
83 that the program does not run or does not complete. */
84 int return_child_result = 0;
85 int return_child_result_value = -1;
88 /* GDB as it has been invoked from the command line (i.e. argv[0]). */
89 static char *gdb_program_name;
91 static void print_gdb_help (struct ui_file *);
93 /* Relocate a file or directory. PROGNAME is the name by which gdb
94 was invoked (i.e., argv[0]). INITIAL is the default value for the
95 file or directory. FLAG is true if the value is relocatable, false
96 otherwise. Returns a newly allocated string; this may return NULL
97 under the same conditions as make_relative_prefix. */
100 relocate_path (const char *progname, const char *initial, int flag)
103 return make_relative_prefix (progname, BINDIR, initial);
104 return xstrdup (initial);
107 /* Like relocate_path, but specifically checks for a directory.
108 INITIAL is relocated according to the rules of relocate_path. If
109 the result is a directory, it is used; otherwise, INITIAL is used.
110 The chosen directory is then canonicalized using lrealpath. This
111 function always returns a newly-allocated string. */
114 relocate_gdb_directory (const char *initial, int flag)
118 dir = relocate_path (gdb_program_name, initial, flag);
123 if (stat (dir, &s) != 0 || !S_ISDIR (s.st_mode))
130 dir = xstrdup (initial);
132 /* Canonicalize the directory. */
135 char *canon_sysroot = lrealpath (dir);
147 /* Compute the locations of init files that GDB should source and
148 return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If
149 there is no system gdbinit (resp. home gdbinit and local gdbinit)
150 to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
151 LOCAL_GDBINIT) is set to NULL. */
153 get_init_files (char **system_gdbinit,
155 char **local_gdbinit)
157 static char *sysgdbinit = NULL;
158 static char *homeinit = NULL;
159 static char *localinit = NULL;
160 static int initialized = 0;
164 struct stat homebuf, cwdbuf, s;
165 char *homedir, *relocated_sysgdbinit;
167 if (SYSTEM_GDBINIT[0])
169 relocated_sysgdbinit = relocate_path (gdb_program_name,
171 SYSTEM_GDBINIT_RELOCATABLE);
172 if (relocated_sysgdbinit && stat (relocated_sysgdbinit, &s) == 0)
173 sysgdbinit = relocated_sysgdbinit;
175 xfree (relocated_sysgdbinit);
178 homedir = getenv ("HOME");
180 /* If the .gdbinit file in the current directory is the same as
181 the $HOME/.gdbinit file, it should not be sourced. homebuf
182 and cwdbuf are used in that purpose. Make sure that the stats
183 are zero in case one of them fails (this guarantees that they
184 won't match if either exists). */
186 memset (&homebuf, 0, sizeof (struct stat));
187 memset (&cwdbuf, 0, sizeof (struct stat));
191 homeinit = xstrprintf ("%s/%s", homedir, gdbinit);
192 if (stat (homeinit, &homebuf) != 0)
199 if (stat (gdbinit, &cwdbuf) == 0)
202 || memcmp ((char *) &homebuf, (char *) &cwdbuf,
203 sizeof (struct stat)))
210 *system_gdbinit = sysgdbinit;
211 *home_gdbinit = homeinit;
212 *local_gdbinit = localinit;
215 /* Call command_loop. If it happens to return, pass that through as a
216 non-zero return status. */
219 captured_command_loop (void *data)
221 /* Top-level execution commands can be run on the background from
223 interpreter_async = 1;
225 current_interp_command_loop ();
226 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
227 would clean things up (restoring the cleanup chain) to the state
228 they were just prior to the call. Technically, this means that
229 the do_cleanups() below is redundant. Unfortunately, many FUNCs
230 are not that well behaved. do_cleanups should either be replaced
231 with a do_cleanups call (to cover the problem) or an assertion
232 check to detect bad FUNCs code. */
233 do_cleanups (ALL_CLEANUPS);
234 /* If the command_loop returned, normally (rather than threw an
235 error) we try to quit. If the quit is aborted, catch_errors()
236 which called this catch the signal and restart the command
238 quit_command (NULL, instream == stdin);
243 captured_main (void *data)
245 struct captured_main_args *context = data;
246 int argc = context->argc;
247 char **argv = context->argv;
248 static int quiet = 0;
249 static int set_args = 0;
251 /* Pointers to various arguments from command line. */
253 char *execarg = NULL;
255 char *corearg = NULL;
256 char *pid_or_core_arg = NULL;
260 /* These are static so that we can take their address in an
262 static int print_help;
263 static int print_version;
265 /* Pointers to all arguments of --command option. */
273 /* Allocated size of cmdarg. */
275 /* Number of elements of cmdarg used. */
278 /* Indices of all arguments of --directory option. */
280 /* Allocated size. */
282 /* Number of elements used. */
285 /* gdb init files. */
286 char *system_gdbinit;
292 struct objfile *objfile;
294 struct cleanup *pre_stat_chain;
297 /* Set this before calling make_command_stats_cleanup. */
298 lim_at_start = (char *) sbrk (0);
301 pre_stat_chain = make_command_stats_cleanup (0);
303 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
304 setlocale (LC_MESSAGES, "");
306 #if defined (HAVE_SETLOCALE)
307 setlocale (LC_CTYPE, "");
309 bindtextdomain (PACKAGE, LOCALEDIR);
310 textdomain (PACKAGE);
313 cmdarg = (struct cmdarg *) xmalloc (cmdsize * sizeof (*cmdarg));
316 dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
320 saved_command_line = (char *) xmalloc (saved_command_line_size);
321 saved_command_line[0] = '\0';
324 gdb_stdout = stdio_fileopen (stdout);
325 gdb_stderr = stdio_fileopen (stderr);
326 gdb_stdlog = gdb_stderr; /* for moment */
327 gdb_stdtarg = gdb_stderr; /* for moment */
328 gdb_stdin = stdio_fileopen (stdin);
329 gdb_stdtargerr = gdb_stderr; /* for moment */
330 gdb_stdtargin = gdb_stdin; /* for moment */
332 gdb_program_name = xstrdup (argv[0]);
334 if (! getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)))
335 /* Don't use *_filtered or warning() (which relies on
336 current_target) until after initialize_all_files(). */
337 fprintf_unfiltered (gdb_stderr,
338 _("%s: warning: error finding "
339 "working directory: %s\n"),
340 argv[0], safe_strerror (errno));
342 current_directory = gdb_dirbuf;
344 /* Set the sysroot path. */
345 gdb_sysroot = relocate_gdb_directory (TARGET_SYSTEM_ROOT,
346 TARGET_SYSTEM_ROOT_RELOCATABLE);
348 debug_file_directory = relocate_gdb_directory (DEBUGDIR,
349 DEBUGDIR_RELOCATABLE);
351 gdb_datadir = relocate_gdb_directory (GDB_DATADIR,
352 GDB_DATADIR_RELOCATABLE);
354 #ifdef WITH_PYTHON_PATH
356 /* For later use in helping Python find itself. */
357 char *tmp = concat (WITH_PYTHON_PATH, SLASH_STRING, "lib", NULL);
359 python_libdir = relocate_gdb_directory (tmp, PYTHON_PATH_RELOCATABLE);
365 add_substitute_path_rule (RELOC_SRCDIR,
366 make_relative_prefix (argv[0], BINDIR,
370 /* There will always be an interpreter. Either the one passed into
371 this captured main, or one specified by the user at start up, or
372 the console. Initialize the interpreter to the one requested by
374 interpreter_p = xstrdup (context->interpreter_p);
376 /* Parse arguments and options. */
379 /* When var field is 0, use flag field to record the equivalent
380 short option (or arbitrary numbers starting at 10 for those
381 with no equivalent). */
391 static struct option long_options[] =
393 {"tui", no_argument, 0, OPT_TUI},
394 {"xdb", no_argument, &xdb_commands, 1},
395 {"dbx", no_argument, &dbx_commands, 1},
396 {"readnow", no_argument, &readnow_symbol_files, 1},
397 {"r", no_argument, &readnow_symbol_files, 1},
398 {"quiet", no_argument, &quiet, 1},
399 {"q", no_argument, &quiet, 1},
400 {"silent", no_argument, &quiet, 1},
401 {"nx", no_argument, &inhibit_gdbinit, 1},
402 {"n", no_argument, &inhibit_gdbinit, 1},
403 {"batch-silent", no_argument, 0, 'B'},
404 {"batch", no_argument, &batch_flag, 1},
405 {"epoch", no_argument, &epoch_interface, 1},
407 /* This is a synonym for "--annotate=1". --annotate is now
408 preferred, but keep this here for a long time because people
409 will be running emacses which use --fullname. */
410 {"fullname", no_argument, 0, 'f'},
411 {"f", no_argument, 0, 'f'},
413 {"annotate", required_argument, 0, OPT_ANNOTATE},
414 {"help", no_argument, &print_help, 1},
415 {"se", required_argument, 0, OPT_SE},
416 {"symbols", required_argument, 0, 's'},
417 {"s", required_argument, 0, 's'},
418 {"exec", required_argument, 0, 'e'},
419 {"e", required_argument, 0, 'e'},
420 {"core", required_argument, 0, 'c'},
421 {"c", required_argument, 0, 'c'},
422 {"pid", required_argument, 0, 'p'},
423 {"p", required_argument, 0, 'p'},
424 {"command", required_argument, 0, 'x'},
425 {"eval-command", required_argument, 0, 'X'},
426 {"version", no_argument, &print_version, 1},
427 {"x", required_argument, 0, 'x'},
428 {"ex", required_argument, 0, 'X'},
430 {"tclcommand", required_argument, 0, 'z'},
431 {"enable-external-editor", no_argument, 0, 'y'},
432 {"editor-command", required_argument, 0, 'w'},
434 {"ui", required_argument, 0, 'i'},
435 {"interpreter", required_argument, 0, 'i'},
436 {"i", required_argument, 0, 'i'},
437 {"directory", required_argument, 0, 'd'},
438 {"d", required_argument, 0, 'd'},
439 {"data-directory", required_argument, 0, 'D'},
440 {"cd", required_argument, 0, OPT_CD},
441 {"tty", required_argument, 0, 't'},
442 {"baud", required_argument, 0, 'b'},
443 {"b", required_argument, 0, 'b'},
444 {"nw", no_argument, NULL, OPT_NOWINDOWS},
445 {"nowindows", no_argument, NULL, OPT_NOWINDOWS},
446 {"w", no_argument, NULL, OPT_WINDOWS},
447 {"windows", no_argument, NULL, OPT_WINDOWS},
448 {"statistics", no_argument, 0, OPT_STATISTICS},
449 {"write", no_argument, &write_files, 1},
450 {"args", no_argument, &set_args, 1},
451 {"l", required_argument, 0, 'l'},
452 {"return-child-result", no_argument, &return_child_result, 1},
453 {0, no_argument, 0, 0}
460 c = getopt_long_only (argc, argv, "",
461 long_options, &option_index);
462 if (c == EOF || set_args)
465 /* Long option that takes an argument. */
466 if (c == 0 && long_options[option_index].flag == 0)
467 c = long_options[option_index].val;
472 /* Long option that just sets a flag. */
482 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
483 annotation_level = atoi (optarg);
486 /* Enable the display of both time and space usage. */
487 set_display_time (1);
488 set_display_space (1);
491 /* --tui is equivalent to -i=tui. */
493 xfree (interpreter_p);
494 interpreter_p = xstrdup (INTERP_TUI);
496 fprintf_unfiltered (gdb_stderr,
497 _("%s: TUI mode is not supported\n"),
503 /* FIXME: cagney/2003-03-01: Not sure if this option is
504 actually useful, and if it is, what it should do. */
506 /* --windows is equivalent to -i=insight. */
507 xfree (interpreter_p);
508 interpreter_p = xstrdup (INTERP_INSIGHT);
513 /* -nw is equivalent to -i=console. */
514 xfree (interpreter_p);
515 interpreter_p = xstrdup (INTERP_CONSOLE);
519 annotation_level = 1;
520 /* We have probably been invoked from emacs. Disable
537 cmdarg[ncmd].type = CMDARG_FILE;
538 cmdarg[ncmd++].string = optarg;
542 cmdarg = xrealloc ((char *) cmdarg,
543 cmdsize * sizeof (*cmdarg));
547 cmdarg[ncmd].type = CMDARG_COMMAND;
548 cmdarg[ncmd++].string = optarg;
552 cmdarg = xrealloc ((char *) cmdarg,
553 cmdsize * sizeof (*cmdarg));
557 batch_flag = batch_silent = 1;
558 gdb_stdout = ui_file_new();
562 gdb_datadir = xstrdup (optarg);
567 extern int gdbtk_test (char *);
569 if (!gdbtk_test (optarg))
571 fprintf_unfiltered (gdb_stderr,
572 _("%s: unable to load "
573 "tclcommand file \"%s\""),
580 /* Backwards compatibility only. */
584 /* Set the external editor commands when gdb is farming out files
585 to be edited by another program. */
586 extern char *external_editor_command;
588 external_editor_command = xstrdup (optarg);
593 xfree (interpreter_p);
594 interpreter_p = xstrdup (optarg);
597 dirarg[ndir++] = optarg;
601 dirarg = (char **) xrealloc ((char *) dirarg,
602 dirsize * sizeof (*dirarg));
616 i = strtol (optarg, &p, 0);
617 if (i == 0 && p == optarg)
619 /* Don't use *_filtered or warning() (which relies on
620 current_target) until after initialize_all_files(). */
624 _("warning: could not set baud rate to `%s'.\n"), optarg);
634 i = strtol (optarg, &p, 0);
635 if (i == 0 && p == optarg)
637 /* Don't use *_filtered or warning() (which relies on
638 current_target) until after initialize_all_files(). */
640 fprintf_unfiltered (gdb_stderr,
641 _("warning: could not set "
642 "timeout limit to `%s'.\n"), optarg);
649 fprintf_unfiltered (gdb_stderr,
650 _("Use `%s --help' for a "
651 "complete list of options.\n"),
657 /* If --help or --version, disable window interface. */
658 if (print_help || print_version)
667 /* Initialize all files. Give the interpreter a chance to take
668 control of the console via the deprecated_init_ui_hook (). */
671 /* Now that gdb_init has created the initial inferior, we're in
672 position to set args for that inferior. */
675 /* The remaining options are the command-line options for the
676 inferior. The first one is the sym/exec file, and the rest
680 fprintf_unfiltered (gdb_stderr,
681 _("%s: `--args' specified but "
682 "no program specified\n"),
686 symarg = argv[optind];
687 execarg = argv[optind];
689 set_inferior_args_vector (argc - optind, &argv[optind]);
693 /* OK, that's all the options. */
695 /* The first argument, if specified, is the name of the
699 symarg = argv[optind];
700 execarg = argv[optind];
704 /* If the user hasn't already specified a PID or the name of a
705 core file, then a second optional argument is allowed. If
706 present, this argument should be interpreted as either a
707 PID or a core file, whichever works. */
708 if (pidarg == NULL && corearg == NULL && optind < argc)
710 pid_or_core_arg = argv[optind];
714 /* Any argument left on the command line is unexpected and
715 will be ignored. Inform the user. */
717 fprintf_unfiltered (gdb_stderr,
718 _("Excess command line "
719 "arguments ignored. (%s%s)\n"),
721 (optind == argc - 1) ? "" : " ...");
724 /* Lookup gdbinit files. Note that the gdbinit file name may be
725 overriden during file initialization, so get_init_files should be
726 called after gdb_init. */
727 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
729 /* Do these (and anything which might call wrap_here or *_filtered)
730 after initialize_all_files() but before the interpreter has been
731 installed. Otherwize the help/version messages will be eaten by
732 the interpreter's output handler. */
736 print_gdb_version (gdb_stdout);
738 printf_filtered ("\n");
744 print_gdb_help (gdb_stdout);
745 fputs_unfiltered ("\n", gdb_stdout);
749 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
750 GDB retain the old MI1 interpreter startup behavior. Output the
751 copyright message before the interpreter is installed. That way
752 it isn't encapsulated in MI output. */
753 if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0)
755 /* Print all the junk at the top, with trailing "..." if we are
756 about to read a symbol file (possibly slowly). */
757 print_gdb_version (gdb_stdout);
759 printf_filtered ("..");
761 printf_filtered ("\n");
762 gdb_flush (gdb_stdout); /* Force to screen during slow
766 /* Install the default UI. All the interpreters should have had a
767 look at things by now. Initialize the default interpreter. */
771 struct interp *interp = interp_lookup (interpreter_p);
774 error (_("Interpreter `%s' unrecognized"), interpreter_p);
776 if (!interp_set (interp, 1))
778 fprintf_unfiltered (gdb_stderr,
779 "Interpreter `%s' failed to initialize.\n",
785 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
786 GDB retain the old MI1 interpreter startup behavior. Output the
787 copyright message after the interpreter is installed when it is
788 any sane interpreter. */
789 if (!quiet && !current_interp_named_p (INTERP_MI1))
791 /* Print all the junk at the top, with trailing "..." if we are
792 about to read a symbol file (possibly slowly). */
793 print_gdb_version (gdb_stdout);
795 printf_filtered ("..");
797 printf_filtered ("\n");
798 gdb_flush (gdb_stdout); /* Force to screen during slow
802 /* Set off error and warning messages with a blank line. */
803 error_pre_print = "\n";
804 quit_pre_print = error_pre_print;
805 warning_pre_print = _("\nwarning: ");
807 /* Read and execute the system-wide gdbinit file, if it exists.
808 This is done *before* all the command line arguments are
809 processed; it sets global parameters, which are independent of
810 what file you are debugging or what directory you are in. */
811 if (system_gdbinit && !inhibit_gdbinit)
812 catch_command_errors (source_script, system_gdbinit, 0, RETURN_MASK_ALL);
814 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
815 *before* all the command line arguments are processed; it sets
816 global parameters, which are independent of what file you are
817 debugging or what directory you are in. */
819 if (home_gdbinit && !inhibit_gdbinit)
820 catch_command_errors (source_script, home_gdbinit, 0, RETURN_MASK_ALL);
822 /* Now perform all the actions indicated by the arguments. */
825 catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL);
828 for (i = 0; i < ndir; i++)
829 catch_command_errors (directory_switch, dirarg[i], 0, RETURN_MASK_ALL);
832 /* Skip auto-loading section-specified scripts until we've sourced
833 local_gdbinit (which is often used to augment the source search
835 save_auto_load = gdbpy_global_auto_load;
836 gdbpy_global_auto_load = 0;
840 && strcmp (execarg, symarg) == 0)
842 /* The exec file and the symbol-file are the same. If we can't
843 open it, better only print one error message.
844 catch_command_errors returns non-zero on success! */
845 if (catch_command_errors (exec_file_attach, execarg,
846 !batch_flag, RETURN_MASK_ALL))
847 catch_command_errors (symbol_file_add_main, symarg,
848 !batch_flag, RETURN_MASK_ALL);
853 catch_command_errors (exec_file_attach, execarg,
854 !batch_flag, RETURN_MASK_ALL);
856 catch_command_errors (symbol_file_add_main, symarg,
857 !batch_flag, RETURN_MASK_ALL);
860 if (corearg && pidarg)
861 error (_("Can't attach to process and specify "
862 "a core file at the same time."));
865 catch_command_errors (core_file_command, corearg,
866 !batch_flag, RETURN_MASK_ALL);
867 else if (pidarg != NULL)
868 catch_command_errors (attach_command, pidarg,
869 !batch_flag, RETURN_MASK_ALL);
870 else if (pid_or_core_arg)
872 /* The user specified 'gdb program pid' or gdb program core'.
873 If pid_or_core_arg's first character is a digit, try attach
874 first and then corefile. Otherwise try just corefile. */
876 if (isdigit (pid_or_core_arg[0]))
878 if (catch_command_errors (attach_command, pid_or_core_arg,
879 !batch_flag, RETURN_MASK_ALL) == 0)
880 catch_command_errors (core_file_command, pid_or_core_arg,
881 !batch_flag, RETURN_MASK_ALL);
883 else /* Can't be a pid, better be a corefile. */
884 catch_command_errors (core_file_command, pid_or_core_arg,
885 !batch_flag, RETURN_MASK_ALL);
889 set_inferior_io_terminal (ttyarg);
891 /* Error messages should no longer be distinguished with extra output. */
892 error_pre_print = NULL;
893 quit_pre_print = NULL;
894 warning_pre_print = _("warning: ");
896 /* Read the .gdbinit file in the current directory, *if* it isn't
897 the same as the $HOME/.gdbinit file (it should exist, also). */
898 if (local_gdbinit && !inhibit_gdbinit)
899 catch_command_errors (source_script, local_gdbinit, 0, RETURN_MASK_ALL);
901 /* Now that all .gdbinit's have been read and all -d options have been
902 processed, we can read any scripts mentioned in SYMARG.
903 We wait until now because it is common to add to the source search
904 path in local_gdbinit. */
905 gdbpy_global_auto_load = save_auto_load;
906 ALL_OBJFILES (objfile)
907 load_auto_scripts_for_objfile (objfile);
909 for (i = 0; i < ncmd; i++)
911 if (cmdarg[i].type == CMDARG_FILE)
912 catch_command_errors (source_script, cmdarg[i].string,
913 !batch_flag, RETURN_MASK_ALL);
914 else /* cmdarg[i].type == CMDARG_COMMAND */
915 catch_command_errors (execute_command, cmdarg[i].string,
916 !batch_flag, RETURN_MASK_ALL);
920 /* Read in the old history after all the command files have been
926 /* We have hit the end of the batch file. */
927 quit_force (NULL, 0);
930 /* Show time and/or space usage. */
931 do_cleanups (pre_stat_chain);
933 /* NOTE: cagney/1999-11-07: There is probably no reason for not
934 moving this loop and the code found in captured_command_loop()
935 into the command_loop() proper. The main thing holding back that
936 change - SET_TOP_LEVEL() - has been eliminated. */
939 catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL);
941 /* No exit -- exit is through quit_command. */
945 gdb_main (struct captured_main_args *args)
947 use_windows = args->use_windows;
948 catch_errors (captured_main, args, "", RETURN_MASK_ALL);
949 /* The only way to end up here is by an error (normal exit is
950 handled by quit_force()), hence always return an error status. */
955 /* Don't use *_filtered for printing help. We don't want to prompt
956 for continue no matter how small the screen or how much we're going
960 print_gdb_help (struct ui_file *stream)
962 char *system_gdbinit;
966 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
968 fputs_unfiltered (_("\
969 This is the GNU debugger. Usage:\n\n\
970 gdb [options] [executable-file [core-file or process-id]]\n\
971 gdb [options] --args executable-file [inferior-arguments ...]\n\n\
974 fputs_unfiltered (_("\
975 --args Arguments after executable-file are passed to inferior\n\
977 fputs_unfiltered (_("\
978 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
979 --batch Exit after processing options.\n\
980 --batch-silent As for --batch, but suppress all gdb stdout output.\n\
981 --return-child-result\n\
982 GDB exit code will be the child's exit code.\n\
983 --cd=DIR Change current directory to DIR.\n\
984 --command=FILE, -x Execute GDB commands from FILE.\n\
985 --eval-command=COMMAND, -ex\n\
986 Execute a single GDB command.\n\
987 May be used multiple times and in conjunction\n\
989 --core=COREFILE Analyze the core dump COREFILE.\n\
990 --pid=PID Attach to running process PID.\n\
992 fputs_unfiltered (_("\
993 --dbx DBX compatibility mode.\n\
994 --directory=DIR Search for source files in DIR.\n\
995 --epoch Output information used by epoch emacs-GDB interface.\n\
996 --exec=EXECFILE Use EXECFILE as the executable.\n\
997 --fullname Output information used by emacs-GDB interface.\n\
998 --help Print this message.\n\
1000 fputs_unfiltered (_("\
1001 --interpreter=INTERP\n\
1002 Select a specific interpreter / user interface\n\
1004 fputs_unfiltered (_("\
1005 -l TIMEOUT Set timeout in seconds for remote debugging.\n\
1006 --nw Do not use a window interface.\n\
1007 --nx Do not read "), stream);
1008 fputs_unfiltered (gdbinit, stream);
1009 fputs_unfiltered (_(" file.\n\
1010 --quiet Do not print version number on startup.\n\
1011 --readnow Fully read symbol files on first access.\n\
1013 fputs_unfiltered (_("\
1014 --se=FILE Use FILE as symbol file and executable file.\n\
1015 --symbols=SYMFILE Read symbols from SYMFILE.\n\
1016 --tty=TTY Use TTY for input/output by the program being debugged.\n\
1019 fputs_unfiltered (_("\
1020 --tui Use a terminal user interface.\n\
1023 fputs_unfiltered (_("\
1024 --version Print version information and then exit.\n\
1025 -w Use a window interface.\n\
1026 --write Set writing into executable and core files.\n\
1027 --xdb XDB compatibility mode.\n\
1029 fputs_unfiltered (_("\n\
1030 At startup, GDB reads the following init files and executes their commands:\n\
1033 fprintf_unfiltered (stream, _("\
1034 * system-wide init file: %s\n\
1035 "), system_gdbinit);
1037 fprintf_unfiltered (stream, _("\
1038 * user-specific init file: %s\n\
1041 fprintf_unfiltered (stream, _("\
1042 * local init file: ./%s\n\
1044 fputs_unfiltered (_("\n\
1045 For more information, type \"help\" from within GDB, or consult the\n\
1046 GDB manual (available as on-line info or a printed manual).\n\
1048 if (REPORT_BUGS_TO[0] && stream == gdb_stdout)
1049 fprintf_unfiltered (stream, _("\
1050 Report bugs to \"%s\".\n\
1051 "), REPORT_BUGS_TO);