1 /* Top level stuff for GDB, the GNU debugger.
3 Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
4 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008,
5 2009, 2010, 2011 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
29 #include "exceptions.h"
32 #include <sys/types.h>
36 #include "gdb_string.h"
37 #include "event-loop.h"
43 #include "cli/cli-cmds.h"
44 #include "python/python.h"
47 /* The selected interpreter. This will be used as a set command
48 variable, so it should always be malloc'ed - since
49 do_setshow_command will free it. */
52 /* Whether xdb commands will be handled. */
55 /* Whether dbx commands will be handled. */
58 /* System root path, used to find libraries etc. */
59 char *gdb_sysroot = 0;
61 /* GDB datadir, used to store data files. */
62 char *gdb_datadir = 0;
64 /* If gdb was configured with --with-python=/path,
65 the possibly relocated path to python's lib directory. */
66 char *python_libdir = 0;
68 struct ui_file *gdb_stdout;
69 struct ui_file *gdb_stderr;
70 struct ui_file *gdb_stdlog;
71 struct ui_file *gdb_stdin;
72 /* Target IO streams. */
73 struct ui_file *gdb_stdtargin;
74 struct ui_file *gdb_stdtarg;
75 struct ui_file *gdb_stdtargerr;
77 /* True if --batch or --batch-silent was seen. */
80 /* Support for the --batch-silent option. */
83 /* Support for --return-child-result option.
84 Set the default to -1 to return error in the case
85 that the program does not run or does not complete. */
86 int return_child_result = 0;
87 int return_child_result_value = -1;
89 /* Whether to enable writing into executable and core files. */
90 extern int write_files;
92 /* GDB as it has been invoked from the command line (i.e. argv[0]). */
93 static char *gdb_program_name;
95 static void print_gdb_help (struct ui_file *);
97 /* These two are used to set the external editor commands when gdb is
98 farming out files to be edited by another program. */
100 extern char *external_editor_command;
102 /* Relocate a file or directory. PROGNAME is the name by which gdb
103 was invoked (i.e., argv[0]). INITIAL is the default value for the
104 file or directory. FLAG is true if the value is relocatable, false
105 otherwise. Returns a newly allocated string; this may return NULL
106 under the same conditions as make_relative_prefix. */
108 relocate_path (const char *progname, const char *initial, int flag)
111 return make_relative_prefix (progname, BINDIR, initial);
112 return xstrdup (initial);
115 /* Like relocate_path, but specifically checks for a directory.
116 INITIAL is relocated according to the rules of relocate_path. If
117 the result is a directory, it is used; otherwise, INITIAL is used.
118 The chosen directory is then canonicalized using lrealpath. This
119 function always returns a newly-allocated string. */
121 relocate_directory (const char *progname, const char *initial, int flag)
125 dir = relocate_path (progname, initial, flag);
130 if (stat (dir, &s) != 0 || !S_ISDIR (s.st_mode))
137 dir = xstrdup (initial);
139 /* Canonicalize the directory. */
142 char *canon_sysroot = lrealpath (dir);
154 /* Compute the locations of init files that GDB should source and
155 return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If
156 there is no system gdbinit (resp. home gdbinit and local gdbinit)
157 to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
158 LOCAL_GDBINIT) is set to NULL. */
160 get_init_files (char **system_gdbinit,
162 char **local_gdbinit)
164 static char *sysgdbinit = NULL;
165 static char *homeinit = NULL;
166 static char *localinit = NULL;
167 static int initialized = 0;
171 struct stat homebuf, cwdbuf, s;
172 char *homedir, *relocated_sysgdbinit;
174 if (SYSTEM_GDBINIT[0])
176 relocated_sysgdbinit = relocate_path (gdb_program_name,
178 SYSTEM_GDBINIT_RELOCATABLE);
179 if (relocated_sysgdbinit && stat (relocated_sysgdbinit, &s) == 0)
180 sysgdbinit = relocated_sysgdbinit;
182 xfree (relocated_sysgdbinit);
185 homedir = getenv ("HOME");
187 /* If the .gdbinit file in the current directory is the same as
188 the $HOME/.gdbinit file, it should not be sourced. homebuf
189 and cwdbuf are used in that purpose. Make sure that the stats
190 are zero in case one of them fails (this guarantees that they
191 won't match if either exists). */
193 memset (&homebuf, 0, sizeof (struct stat));
194 memset (&cwdbuf, 0, sizeof (struct stat));
198 homeinit = xstrprintf ("%s/%s", homedir, gdbinit);
199 if (stat (homeinit, &homebuf) != 0)
206 if (stat (gdbinit, &cwdbuf) == 0)
209 || memcmp ((char *) &homebuf, (char *) &cwdbuf,
210 sizeof (struct stat)))
217 *system_gdbinit = sysgdbinit;
218 *home_gdbinit = homeinit;
219 *local_gdbinit = localinit;
222 /* Call command_loop. If it happens to return, pass that through as a
223 non-zero return status. */
226 captured_command_loop (void *data)
228 current_interp_command_loop ();
229 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
230 would clean things up (restoring the cleanup chain) to the state
231 they were just prior to the call. Technically, this means that
232 the do_cleanups() below is redundant. Unfortunately, many FUNCs
233 are not that well behaved. do_cleanups should either be replaced
234 with a do_cleanups call (to cover the problem) or an assertion
235 check to detect bad FUNCs code. */
236 do_cleanups (ALL_CLEANUPS);
237 /* If the command_loop returned, normally (rather than threw an
238 error) we try to quit. If the quit is aborted, catch_errors()
239 which called this catch the signal and restart the command
241 quit_command (NULL, instream == stdin);
246 captured_main (void *data)
248 struct captured_main_args *context = data;
249 int argc = context->argc;
250 char **argv = context->argv;
251 static int quiet = 0;
252 static int set_args = 0;
254 /* Pointers to various arguments from command line. */
256 char *execarg = NULL;
258 char *corearg = NULL;
259 char *pid_or_core_arg = NULL;
263 /* These are static so that we can take their address in an
265 static int print_help;
266 static int print_version;
268 /* Pointers to all arguments of --command option. */
276 /* Allocated size of cmdarg. */
278 /* Number of elements of cmdarg used. */
281 /* Indices of all arguments of --directory option. */
283 /* Allocated size. */
285 /* Number of elements used. */
288 /* gdb init files. */
289 char *system_gdbinit;
295 struct objfile *objfile;
297 struct cleanup *pre_stat_chain = make_command_stats_cleanup (0);
299 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
300 setlocale (LC_MESSAGES, "");
302 #if defined (HAVE_SETLOCALE)
303 setlocale (LC_CTYPE, "");
305 bindtextdomain (PACKAGE, LOCALEDIR);
306 textdomain (PACKAGE);
309 lim_at_start = (char *) sbrk (0);
313 cmdarg = (struct cmdarg *) xmalloc (cmdsize * sizeof (*cmdarg));
316 dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
320 line = (char *) xmalloc (linesize);
321 line[0] = '\0'; /* Terminate saved (now empty) cmd line. */
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 working directory: %s\n"),
339 argv[0], safe_strerror (errno));
341 current_directory = gdb_dirbuf;
343 /* Set the sysroot path. */
344 gdb_sysroot = relocate_directory (argv[0], TARGET_SYSTEM_ROOT,
345 TARGET_SYSTEM_ROOT_RELOCATABLE);
347 debug_file_directory = relocate_directory (argv[0], DEBUGDIR,
348 DEBUGDIR_RELOCATABLE);
350 gdb_datadir = relocate_directory (argv[0], GDB_DATADIR,
351 GDB_DATADIR_RELOCATABLE);
353 #ifdef WITH_PYTHON_PATH
354 /* For later use in helping Python find itself. */
355 python_libdir = relocate_directory (argv[0],
356 concat (WITH_PYTHON_PATH,
357 SLASH_STRING, "lib", NULL),
358 PYTHON_PATH_RELOCATABLE);
362 add_substitute_path_rule (RELOC_SRCDIR,
363 make_relative_prefix (argv[0], BINDIR,
367 /* There will always be an interpreter. Either the one passed into
368 this captured main, or one specified by the user at start up, or
369 the console. Initialize the interpreter to the one requested by
371 interpreter_p = xstrdup (context->interpreter_p);
373 /* Parse arguments and options. */
376 /* When var field is 0, use flag field to record the equivalent
377 short option (or arbitrary numbers starting at 10 for those
378 with no equivalent). */
388 static struct option long_options[] =
390 {"tui", no_argument, 0, OPT_TUI},
391 {"xdb", no_argument, &xdb_commands, 1},
392 {"dbx", no_argument, &dbx_commands, 1},
393 {"readnow", no_argument, &readnow_symbol_files, 1},
394 {"r", no_argument, &readnow_symbol_files, 1},
395 {"quiet", no_argument, &quiet, 1},
396 {"q", no_argument, &quiet, 1},
397 {"silent", no_argument, &quiet, 1},
398 {"nx", no_argument, &inhibit_gdbinit, 1},
399 {"n", no_argument, &inhibit_gdbinit, 1},
400 {"batch-silent", no_argument, 0, 'B'},
401 {"batch", no_argument, &batch_flag, 1},
402 {"epoch", no_argument, &epoch_interface, 1},
404 /* This is a synonym for "--annotate=1". --annotate is now
405 preferred, but keep this here for a long time because people
406 will be running emacses which use --fullname. */
407 {"fullname", no_argument, 0, 'f'},
408 {"f", no_argument, 0, 'f'},
410 {"annotate", required_argument, 0, OPT_ANNOTATE},
411 {"help", no_argument, &print_help, 1},
412 {"se", required_argument, 0, OPT_SE},
413 {"symbols", required_argument, 0, 's'},
414 {"s", required_argument, 0, 's'},
415 {"exec", required_argument, 0, 'e'},
416 {"e", required_argument, 0, 'e'},
417 {"core", required_argument, 0, 'c'},
418 {"c", required_argument, 0, 'c'},
419 {"pid", required_argument, 0, 'p'},
420 {"p", required_argument, 0, 'p'},
421 {"command", required_argument, 0, 'x'},
422 {"eval-command", required_argument, 0, 'X'},
423 {"version", no_argument, &print_version, 1},
424 {"x", required_argument, 0, 'x'},
425 {"ex", required_argument, 0, 'X'},
427 {"tclcommand", required_argument, 0, 'z'},
428 {"enable-external-editor", no_argument, 0, 'y'},
429 {"editor-command", required_argument, 0, 'w'},
431 {"ui", required_argument, 0, 'i'},
432 {"interpreter", required_argument, 0, 'i'},
433 {"i", required_argument, 0, 'i'},
434 {"directory", required_argument, 0, 'd'},
435 {"d", required_argument, 0, 'd'},
436 {"data-directory", required_argument, 0, 'D'},
437 {"cd", required_argument, 0, OPT_CD},
438 {"tty", required_argument, 0, 't'},
439 {"baud", required_argument, 0, 'b'},
440 {"b", required_argument, 0, 'b'},
441 {"nw", no_argument, NULL, OPT_NOWINDOWS},
442 {"nowindows", no_argument, NULL, OPT_NOWINDOWS},
443 {"w", no_argument, NULL, OPT_WINDOWS},
444 {"windows", no_argument, NULL, OPT_WINDOWS},
445 {"statistics", no_argument, 0, OPT_STATISTICS},
446 {"write", no_argument, &write_files, 1},
447 {"args", no_argument, &set_args, 1},
448 {"l", required_argument, 0, 'l'},
449 {"return-child-result", no_argument, &return_child_result, 1},
450 {0, no_argument, 0, 0}
457 c = getopt_long_only (argc, argv, "",
458 long_options, &option_index);
459 if (c == EOF || set_args)
462 /* Long option that takes an argument. */
463 if (c == 0 && long_options[option_index].flag == 0)
464 c = long_options[option_index].val;
469 /* Long option that just sets a flag. */
479 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
480 annotation_level = atoi (optarg);
483 /* Enable the display of both time and space usage. */
484 set_display_time (1);
485 set_display_space (1);
488 /* --tui is equivalent to -i=tui. */
490 xfree (interpreter_p);
491 interpreter_p = xstrdup (INTERP_TUI);
493 fprintf_unfiltered (gdb_stderr,
494 _("%s: TUI mode is not supported\n"),
500 /* FIXME: cagney/2003-03-01: Not sure if this option is
501 actually useful, and if it is, what it should do. */
503 /* --windows is equivalent to -i=insight. */
504 xfree (interpreter_p);
505 interpreter_p = xstrdup (INTERP_INSIGHT);
510 /* -nw is equivalent to -i=console. */
511 xfree (interpreter_p);
512 interpreter_p = xstrdup (INTERP_CONSOLE);
516 annotation_level = 1;
517 /* We have probably been invoked from emacs. Disable window interface. */
533 cmdarg[ncmd].type = CMDARG_FILE;
534 cmdarg[ncmd++].string = optarg;
538 cmdarg = xrealloc ((char *) cmdarg,
539 cmdsize * sizeof (*cmdarg));
543 cmdarg[ncmd].type = CMDARG_COMMAND;
544 cmdarg[ncmd++].string = optarg;
548 cmdarg = xrealloc ((char *) cmdarg,
549 cmdsize * sizeof (*cmdarg));
553 batch_flag = batch_silent = 1;
554 gdb_stdout = ui_file_new();
558 gdb_datadir = xstrdup (optarg);
563 extern int gdbtk_test (char *);
565 if (!gdbtk_test (optarg))
567 fprintf_unfiltered (gdb_stderr,
568 _("%s: unable to load tclcommand file \"%s\""),
575 /* Backwards compatibility only. */
579 external_editor_command = xstrdup (optarg);
584 xfree (interpreter_p);
585 interpreter_p = xstrdup (optarg);
588 dirarg[ndir++] = optarg;
592 dirarg = (char **) xrealloc ((char *) dirarg,
593 dirsize * sizeof (*dirarg));
607 i = strtol (optarg, &p, 0);
608 if (i == 0 && p == optarg)
610 /* Don't use *_filtered or warning() (which relies on
611 current_target) until after initialize_all_files(). */
615 _("warning: could not set baud rate to `%s'.\n"), optarg);
625 i = strtol (optarg, &p, 0);
626 if (i == 0 && p == optarg)
628 /* Don't use *_filtered or warning() (which relies on
629 current_target) until after initialize_all_files(). */
633 _("warning: could not set timeout limit to `%s'.\n"), optarg);
640 fprintf_unfiltered (gdb_stderr,
641 _("Use `%s --help' for a complete list of options.\n"),
647 /* If --help or --version, disable window interface. */
648 if (print_help || print_version)
657 /* Initialize all files. Give the interpreter a chance to take
658 control of the console via the deprecated_init_ui_hook (). */
661 /* Now that gdb_init has created the initial inferior, we're in
662 position to set args for that inferior. */
665 /* The remaining options are the command-line options for the
666 inferior. The first one is the sym/exec file, and the rest
670 fprintf_unfiltered (gdb_stderr,
671 _("%s: `--args' specified but no program specified\n"),
675 symarg = argv[optind];
676 execarg = argv[optind];
678 set_inferior_args_vector (argc - optind, &argv[optind]);
682 /* OK, that's all the options. */
684 /* The first argument, if specified, is the name of the
688 symarg = argv[optind];
689 execarg = argv[optind];
693 /* If the user hasn't already specified a PID or the name of a
694 core file, then a second optional argument is allowed. If
695 present, this argument should be interpreted as either a
696 PID or a core file, whichever works. */
697 if (pidarg == NULL && corearg == NULL && optind < argc)
699 pid_or_core_arg = argv[optind];
703 /* Any argument left on the command line is unexpected and
704 will be ignored. Inform the user. */
706 fprintf_unfiltered (gdb_stderr, _("\
707 Excess command line arguments ignored. (%s%s)\n"),
709 (optind == argc - 1) ? "" : " ...");
712 /* Lookup gdbinit files. Note that the gdbinit file name may be
713 overriden during file initialization, so get_init_files should be
714 called after gdb_init. */
715 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
717 /* Do these (and anything which might call wrap_here or *_filtered)
718 after initialize_all_files() but before the interpreter has been
719 installed. Otherwize the help/version messages will be eaten by
720 the interpreter's output handler. */
724 print_gdb_version (gdb_stdout);
726 printf_filtered ("\n");
732 print_gdb_help (gdb_stdout);
733 fputs_unfiltered ("\n", gdb_stdout);
737 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
738 GDB retain the old MI1 interpreter startup behavior. Output the
739 copyright message before the interpreter is installed. That way
740 it isn't encapsulated in MI output. */
741 if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0)
743 /* Print all the junk at the top, with trailing "..." if we are
744 about to read a symbol file (possibly slowly). */
745 print_gdb_version (gdb_stdout);
747 printf_filtered ("..");
749 printf_filtered ("\n");
750 gdb_flush (gdb_stdout); /* Force to screen during slow
754 /* Install the default UI. All the interpreters should have had a
755 look at things by now. Initialize the default interpreter. */
759 struct interp *interp = interp_lookup (interpreter_p);
762 error (_("Interpreter `%s' unrecognized"), interpreter_p);
764 if (!interp_set (interp, 1))
766 fprintf_unfiltered (gdb_stderr,
767 "Interpreter `%s' failed to initialize.\n",
773 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
774 GDB retain the old MI1 interpreter startup behavior. Output the
775 copyright message after the interpreter is installed when it is
776 any sane interpreter. */
777 if (!quiet && !current_interp_named_p (INTERP_MI1))
779 /* Print all the junk at the top, with trailing "..." if we are
780 about to read a symbol file (possibly slowly). */
781 print_gdb_version (gdb_stdout);
783 printf_filtered ("..");
785 printf_filtered ("\n");
786 gdb_flush (gdb_stdout); /* Force to screen during slow
790 /* Set off error and warning messages with a blank line. */
791 error_pre_print = "\n";
792 quit_pre_print = error_pre_print;
793 warning_pre_print = _("\nwarning: ");
795 /* Read and execute the system-wide gdbinit file, if it exists.
796 This is done *before* all the command line arguments are
797 processed; it sets global parameters, which are independent of
798 what file you are debugging or what directory you are in. */
799 if (system_gdbinit && !inhibit_gdbinit)
800 catch_command_errors (source_script, system_gdbinit, 0, RETURN_MASK_ALL);
802 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
803 *before* all the command line arguments are processed; it sets
804 global parameters, which are independent of what file you are
805 debugging or what directory you are in. */
807 if (home_gdbinit && !inhibit_gdbinit)
808 catch_command_errors (source_script, home_gdbinit, 0, RETURN_MASK_ALL);
810 /* Now perform all the actions indicated by the arguments. */
813 catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL);
816 for (i = 0; i < ndir; i++)
817 catch_command_errors (directory_switch, dirarg[i], 0, RETURN_MASK_ALL);
820 /* Skip auto-loading section-specified scripts until we've sourced
821 local_gdbinit (which is often used to augment the source search
823 save_auto_load = gdbpy_global_auto_load;
824 gdbpy_global_auto_load = 0;
828 && strcmp (execarg, symarg) == 0)
830 /* The exec file and the symbol-file are the same. If we can't
831 open it, better only print one error message.
832 catch_command_errors returns non-zero on success! */
833 if (catch_command_errors (exec_file_attach, execarg, !batch_flag, RETURN_MASK_ALL))
834 catch_command_errors (symbol_file_add_main, symarg, !batch_flag, RETURN_MASK_ALL);
839 catch_command_errors (exec_file_attach, execarg, !batch_flag, RETURN_MASK_ALL);
841 catch_command_errors (symbol_file_add_main, symarg, !batch_flag, RETURN_MASK_ALL);
844 if (corearg && pidarg)
846 Can't attach to process and specify a core file at the same time."));
849 catch_command_errors (core_file_command, corearg,
850 !batch_flag, RETURN_MASK_ALL);
851 else if (pidarg != NULL)
852 catch_command_errors (attach_command, pidarg,
853 !batch_flag, RETURN_MASK_ALL);
854 else if (pid_or_core_arg)
856 /* The user specified 'gdb program pid' or gdb program core'.
857 If pid_or_core_arg's first character is a digit, try attach
858 first and then corefile. Otherwise try just corefile. */
860 if (isdigit (pid_or_core_arg[0]))
862 if (catch_command_errors (attach_command, pid_or_core_arg,
863 !batch_flag, RETURN_MASK_ALL) == 0)
864 catch_command_errors (core_file_command, pid_or_core_arg,
865 !batch_flag, RETURN_MASK_ALL);
867 else /* Can't be a pid, better be a corefile. */
868 catch_command_errors (core_file_command, pid_or_core_arg,
869 !batch_flag, RETURN_MASK_ALL);
873 set_inferior_io_terminal (ttyarg);
875 /* Error messages should no longer be distinguished with extra output. */
876 error_pre_print = NULL;
877 quit_pre_print = NULL;
878 warning_pre_print = _("warning: ");
880 /* Read the .gdbinit file in the current directory, *if* it isn't
881 the same as the $HOME/.gdbinit file (it should exist, also). */
882 if (local_gdbinit && !inhibit_gdbinit)
883 catch_command_errors (source_script, local_gdbinit, 0, RETURN_MASK_ALL);
885 /* Now that all .gdbinit's have been read and all -d options have been
886 processed, we can read any scripts mentioned in SYMARG.
887 We wait until now because it is common to add to the source search
888 path in local_gdbinit. */
889 gdbpy_global_auto_load = save_auto_load;
890 ALL_OBJFILES (objfile)
891 load_auto_scripts_for_objfile (objfile);
893 for (i = 0; i < ncmd; i++)
895 if (cmdarg[i].type == CMDARG_FILE)
896 catch_command_errors (source_script, cmdarg[i].string,
897 !batch_flag, RETURN_MASK_ALL);
898 else /* cmdarg[i].type == CMDARG_COMMAND */
899 catch_command_errors (execute_command, cmdarg[i].string,
900 !batch_flag, RETURN_MASK_ALL);
904 /* Read in the old history after all the command files have been
910 /* We have hit the end of the batch file. */
911 quit_force (NULL, 0);
914 /* Show time and/or space usage. */
915 do_cleanups (pre_stat_chain);
917 /* NOTE: cagney/1999-11-07: There is probably no reason for not
918 moving this loop and the code found in captured_command_loop()
919 into the command_loop() proper. The main thing holding back that
920 change - SET_TOP_LEVEL() - has been eliminated. */
923 catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL);
925 /* No exit -- exit is through quit_command. */
929 gdb_main (struct captured_main_args *args)
931 use_windows = args->use_windows;
932 catch_errors (captured_main, args, "", RETURN_MASK_ALL);
933 /* The only way to end up here is by an error (normal exit is
934 handled by quit_force()), hence always return an error status. */
939 /* Don't use *_filtered for printing help. We don't want to prompt
940 for continue no matter how small the screen or how much we're going
944 print_gdb_help (struct ui_file *stream)
946 char *system_gdbinit;
950 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
952 fputs_unfiltered (_("\
953 This is the GNU debugger. Usage:\n\n\
954 gdb [options] [executable-file [core-file or process-id]]\n\
955 gdb [options] --args executable-file [inferior-arguments ...]\n\n\
958 fputs_unfiltered (_("\
959 --args Arguments after executable-file are passed to inferior\n\
961 fputs_unfiltered (_("\
962 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
963 --batch Exit after processing options.\n\
964 --batch-silent As for --batch, but suppress all gdb stdout output.\n\
965 --return-child-result\n\
966 GDB exit code will be the child's exit code.\n\
967 --cd=DIR Change current directory to DIR.\n\
968 --command=FILE, -x Execute GDB commands from FILE.\n\
969 --eval-command=COMMAND, -ex\n\
970 Execute a single GDB command.\n\
971 May be used multiple times and in conjunction\n\
973 --core=COREFILE Analyze the core dump COREFILE.\n\
974 --pid=PID Attach to running process PID.\n\
976 fputs_unfiltered (_("\
977 --dbx DBX compatibility mode.\n\
978 --directory=DIR Search for source files in DIR.\n\
979 --epoch Output information used by epoch emacs-GDB interface.\n\
980 --exec=EXECFILE Use EXECFILE as the executable.\n\
981 --fullname Output information used by emacs-GDB interface.\n\
982 --help Print this message.\n\
984 fputs_unfiltered (_("\
985 --interpreter=INTERP\n\
986 Select a specific interpreter / user interface\n\
988 fputs_unfiltered (_("\
989 -l TIMEOUT Set timeout in seconds for remote debugging.\n\
990 --nw Do not use a window interface.\n\
991 --nx Do not read "), stream);
992 fputs_unfiltered (gdbinit, stream);
993 fputs_unfiltered (_(" file.\n\
994 --quiet Do not print version number on startup.\n\
995 --readnow Fully read symbol files on first access.\n\
997 fputs_unfiltered (_("\
998 --se=FILE Use FILE as symbol file and executable file.\n\
999 --symbols=SYMFILE Read symbols from SYMFILE.\n\
1000 --tty=TTY Use TTY for input/output by the program being debugged.\n\
1003 fputs_unfiltered (_("\
1004 --tui Use a terminal user interface.\n\
1007 fputs_unfiltered (_("\
1008 --version Print version information and then exit.\n\
1009 -w Use a window interface.\n\
1010 --write Set writing into executable and core files.\n\
1011 --xdb XDB compatibility mode.\n\
1013 fputs_unfiltered (_("\n\
1014 At startup, GDB reads the following init files and executes their commands:\n\
1017 fprintf_unfiltered (stream, _("\
1018 * system-wide init file: %s\n\
1019 "), system_gdbinit);
1021 fprintf_unfiltered (stream, _("\
1022 * user-specific init file: %s\n\
1025 fprintf_unfiltered (stream, _("\
1026 * local init file: ./%s\n\
1028 fputs_unfiltered (_("\n\
1029 For more information, type \"help\" from within GDB, or consult the\n\
1030 GDB manual (available as on-line info or a printed manual).\n\
1032 if (REPORT_BUGS_TO[0] && stream == gdb_stdout)
1033 fprintf_unfiltered (stream, _("\
1034 Report bugs to \"%s\".\n\
1035 "), REPORT_BUGS_TO);