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 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"
46 /* The selected interpreter. This will be used as a set command
47 variable, so it should always be malloc'ed - since
48 do_setshow_command will free it. */
51 /* Whether xdb commands will be handled */
54 /* Whether dbx commands will be handled */
57 /* System root path, used to find libraries etc. */
58 char *gdb_sysroot = 0;
60 /* GDB datadir, used to store data files. */
61 char *gdb_datadir = 0;
63 /* If gdb was configured with --with-python=/path,
64 the possibly relocated path to python's lib directory. */
65 char *python_libdir = 0;
67 struct ui_file *gdb_stdout;
68 struct ui_file *gdb_stderr;
69 struct ui_file *gdb_stdlog;
70 struct ui_file *gdb_stdin;
71 /* target IO streams */
72 struct ui_file *gdb_stdtargin;
73 struct ui_file *gdb_stdtarg;
74 struct ui_file *gdb_stdtargerr;
76 /* True if --batch or --batch-silent was seen. */
79 /* Support for the --batch-silent option. */
82 /* Support for --return-child-result option.
83 Set the default to -1 to return error in the case
84 that the program does not run or does not complete. */
85 int return_child_result = 0;
86 int return_child_result_value = -1;
88 /* Whether to enable writing into executable and core files */
89 extern int write_files;
91 /* GDB as it has been invoked from the command line (i.e. argv[0]). */
92 static char *gdb_program_name;
94 static void print_gdb_help (struct ui_file *);
96 /* These two are used to set the external editor commands when gdb is farming
97 out files to be edited by another program. */
99 extern char *external_editor_command;
101 /* Relocate a file or directory. PROGNAME is the name by which gdb
102 was invoked (i.e., argv[0]). INITIAL is the default value for the
103 file or directory. FLAG is true if the value is relocatable, false
104 otherwise. Returns a newly allocated string; this may return NULL
105 under the same conditions as make_relative_prefix. */
107 relocate_path (const char *progname, const char *initial, int flag)
110 return make_relative_prefix (progname, BINDIR, initial);
111 return xstrdup (initial);
114 /* Like relocate_path, but specifically checks for a directory.
115 INITIAL is relocated according to the rules of relocate_path. If
116 the result is a directory, it is used; otherwise, INITIAL is used.
117 The chosen directory is then canonicalized using lrealpath. This
118 function always returns a newly-allocated string. */
120 relocate_directory (const char *progname, const char *initial, int flag)
124 dir = relocate_path (progname, initial, flag);
129 if (stat (dir, &s) != 0 || !S_ISDIR (s.st_mode))
136 dir = xstrdup (initial);
138 /* Canonicalize the directory. */
141 char *canon_sysroot = lrealpath (dir);
153 /* Compute the locations of init files that GDB should source and return
154 them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If there is
155 no system gdbinit (resp. home gdbinit and local gdbinit) to be loaded,
156 then SYSTEM_GDBINIT (resp. HOME_GDBINIT and LOCAL_GDBINIT) is set to
159 get_init_files (char **system_gdbinit,
161 char **local_gdbinit)
163 static char *sysgdbinit = NULL;
164 static char *homeinit = NULL;
165 static char *localinit = NULL;
166 static int initialized = 0;
170 struct stat homebuf, cwdbuf, s;
171 char *homedir, *relocated_sysgdbinit;
173 if (SYSTEM_GDBINIT[0])
175 relocated_sysgdbinit = relocate_path (gdb_program_name,
177 SYSTEM_GDBINIT_RELOCATABLE);
178 if (relocated_sysgdbinit && stat (relocated_sysgdbinit, &s) == 0)
179 sysgdbinit = relocated_sysgdbinit;
181 xfree (relocated_sysgdbinit);
184 homedir = getenv ("HOME");
186 /* If the .gdbinit file in the current directory is the same as
187 the $HOME/.gdbinit file, it should not be sourced. homebuf
188 and cwdbuf are used in that purpose. Make sure that the stats
189 are zero in case one of them fails (this guarantees that they
190 won't match if either exists). */
192 memset (&homebuf, 0, sizeof (struct stat));
193 memset (&cwdbuf, 0, sizeof (struct stat));
197 homeinit = xstrprintf ("%s/%s", homedir, gdbinit);
198 if (stat (homeinit, &homebuf) != 0)
205 if (stat (gdbinit, &cwdbuf) == 0)
208 || memcmp ((char *) &homebuf, (char *) &cwdbuf,
209 sizeof (struct stat)))
216 *system_gdbinit = sysgdbinit;
217 *home_gdbinit = homeinit;
218 *local_gdbinit = localinit;
221 /* Call command_loop. If it happens to return, pass that through as a
222 non-zero return status. */
225 captured_command_loop (void *data)
227 current_interp_command_loop ();
228 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
229 would clean things up (restoring the cleanup chain) to the state
230 they were just prior to the call. Technically, this means that
231 the do_cleanups() below is redundant. Unfortunately, many FUNCs
232 are not that well behaved. do_cleanups should either be replaced
233 with a do_cleanups call (to cover the problem) or an assertion
234 check to detect bad FUNCs code. */
235 do_cleanups (ALL_CLEANUPS);
236 /* If the command_loop returned, normally (rather than threw an
237 error) we try to quit. If the quit is aborted, catch_errors()
238 which called this catch the signal and restart the command
240 quit_command (NULL, instream == stdin);
245 captured_main (void *data)
247 struct captured_main_args *context = data;
248 int argc = context->argc;
249 char **argv = context->argv;
250 static int quiet = 0;
251 static int set_args = 0;
253 /* Pointers to various arguments from command line. */
255 char *execarg = NULL;
257 char *corearg = NULL;
258 char *pid_or_core_arg = NULL;
262 /* These are static so that we can take their address in an initializer. */
263 static int print_help;
264 static int print_version;
266 /* Pointers to all arguments of --command option. */
274 /* Allocated size of cmdarg. */
276 /* Number of elements of cmdarg used. */
279 /* Indices of all arguments of --directory option. */
281 /* Allocated size. */
283 /* Number of elements used. */
286 /* gdb init files. */
287 char *system_gdbinit;
294 struct cleanup *pre_stat_chain = make_command_stats_cleanup (0);
296 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
297 setlocale (LC_MESSAGES, "");
299 #if defined (HAVE_SETLOCALE)
300 setlocale (LC_CTYPE, "");
302 bindtextdomain (PACKAGE, LOCALEDIR);
303 textdomain (PACKAGE);
306 lim_at_start = (char *) sbrk (0);
310 cmdarg = (struct cmdarg *) xmalloc (cmdsize * sizeof (*cmdarg));
313 dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
317 line = (char *) xmalloc (linesize);
318 line[0] = '\0'; /* Terminate saved (now empty) cmd line */
321 gdb_stdout = stdio_fileopen (stdout);
322 gdb_stderr = stdio_fileopen (stderr);
323 gdb_stdlog = gdb_stderr; /* for moment */
324 gdb_stdtarg = gdb_stderr; /* for moment */
325 gdb_stdin = stdio_fileopen (stdin);
326 gdb_stdtargerr = gdb_stderr; /* for moment */
327 gdb_stdtargin = gdb_stdin; /* for moment */
329 gdb_program_name = xstrdup (argv[0]);
331 if (! getcwd (gdb_dirbuf, sizeof (gdb_dirbuf)))
332 /* Don't use *_filtered or warning() (which relies on
333 current_target) until after initialize_all_files(). */
334 fprintf_unfiltered (gdb_stderr,
335 _("%s: warning: error finding working directory: %s\n"),
336 argv[0], safe_strerror (errno));
338 current_directory = gdb_dirbuf;
340 /* Set the sysroot path. */
341 gdb_sysroot = relocate_directory (argv[0], TARGET_SYSTEM_ROOT,
342 TARGET_SYSTEM_ROOT_RELOCATABLE);
344 debug_file_directory = relocate_directory (argv[0], DEBUGDIR,
345 DEBUGDIR_RELOCATABLE);
347 gdb_datadir = relocate_directory (argv[0], GDB_DATADIR,
348 GDB_DATADIR_RELOCATABLE);
350 #ifdef WITH_PYTHON_PATH
351 /* For later use in helping Python find itself. */
352 python_libdir = relocate_directory (argv[0],
353 concat (WITH_PYTHON_PATH,
354 SLASH_STRING, "lib", NULL),
355 PYTHON_PATH_RELOCATABLE);
359 add_substitute_path_rule (RELOC_SRCDIR,
360 make_relative_prefix (argv[0], BINDIR,
364 /* There will always be an interpreter. Either the one passed into
365 this captured main, or one specified by the user at start up, or
366 the console. Initialize the interpreter to the one requested by
368 interpreter_p = xstrdup (context->interpreter_p);
370 /* Parse arguments and options. */
373 /* When var field is 0, use flag field to record the equivalent
374 short option (or arbitrary numbers starting at 10 for those
375 with no equivalent). */
385 static struct option long_options[] =
387 {"tui", no_argument, 0, OPT_TUI},
388 {"xdb", no_argument, &xdb_commands, 1},
389 {"dbx", no_argument, &dbx_commands, 1},
390 {"readnow", no_argument, &readnow_symbol_files, 1},
391 {"r", no_argument, &readnow_symbol_files, 1},
392 {"quiet", no_argument, &quiet, 1},
393 {"q", no_argument, &quiet, 1},
394 {"silent", no_argument, &quiet, 1},
395 {"nx", no_argument, &inhibit_gdbinit, 1},
396 {"n", no_argument, &inhibit_gdbinit, 1},
397 {"batch-silent", no_argument, 0, 'B'},
398 {"batch", no_argument, &batch_flag, 1},
399 {"epoch", no_argument, &epoch_interface, 1},
401 /* This is a synonym for "--annotate=1". --annotate is now preferred,
402 but keep this here for a long time because people will be running
403 emacses which use --fullname. */
404 {"fullname", no_argument, 0, 'f'},
405 {"f", no_argument, 0, 'f'},
407 {"annotate", required_argument, 0, OPT_ANNOTATE},
408 {"help", no_argument, &print_help, 1},
409 {"se", required_argument, 0, OPT_SE},
410 {"symbols", required_argument, 0, 's'},
411 {"s", required_argument, 0, 's'},
412 {"exec", required_argument, 0, 'e'},
413 {"e", required_argument, 0, 'e'},
414 {"core", required_argument, 0, 'c'},
415 {"c", required_argument, 0, 'c'},
416 {"pid", required_argument, 0, 'p'},
417 {"p", required_argument, 0, 'p'},
418 {"command", required_argument, 0, 'x'},
419 {"eval-command", required_argument, 0, 'X'},
420 {"version", no_argument, &print_version, 1},
421 {"x", required_argument, 0, 'x'},
422 {"ex", required_argument, 0, 'X'},
424 {"tclcommand", required_argument, 0, 'z'},
425 {"enable-external-editor", no_argument, 0, 'y'},
426 {"editor-command", required_argument, 0, 'w'},
428 {"ui", required_argument, 0, 'i'},
429 {"interpreter", required_argument, 0, 'i'},
430 {"i", required_argument, 0, 'i'},
431 {"directory", required_argument, 0, 'd'},
432 {"d", required_argument, 0, 'd'},
433 {"cd", required_argument, 0, OPT_CD},
434 {"tty", required_argument, 0, 't'},
435 {"baud", required_argument, 0, 'b'},
436 {"b", required_argument, 0, 'b'},
437 {"nw", no_argument, NULL, OPT_NOWINDOWS},
438 {"nowindows", no_argument, NULL, OPT_NOWINDOWS},
439 {"w", no_argument, NULL, OPT_WINDOWS},
440 {"windows", no_argument, NULL, OPT_WINDOWS},
441 {"statistics", no_argument, 0, OPT_STATISTICS},
442 {"write", no_argument, &write_files, 1},
443 {"args", no_argument, &set_args, 1},
444 {"l", required_argument, 0, 'l'},
445 {"return-child-result", no_argument, &return_child_result, 1},
446 {0, no_argument, 0, 0}
453 c = getopt_long_only (argc, argv, "",
454 long_options, &option_index);
455 if (c == EOF || set_args)
458 /* Long option that takes an argument. */
459 if (c == 0 && long_options[option_index].flag == 0)
460 c = long_options[option_index].val;
465 /* Long option that just sets a flag. */
475 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
476 annotation_level = atoi (optarg);
479 /* Enable the display of both time and space usage. */
480 set_display_time (1);
481 set_display_space (1);
484 /* --tui is equivalent to -i=tui. */
486 xfree (interpreter_p);
487 interpreter_p = xstrdup (INTERP_TUI);
489 fprintf_unfiltered (gdb_stderr,
490 _("%s: TUI mode is not supported\n"),
496 /* FIXME: cagney/2003-03-01: Not sure if this option is
497 actually useful, and if it is, what it should do. */
499 /* --windows is equivalent to -i=insight. */
500 xfree (interpreter_p);
501 interpreter_p = xstrdup (INTERP_INSIGHT);
506 /* -nw is equivalent to -i=console. */
507 xfree (interpreter_p);
508 interpreter_p = xstrdup (INTERP_CONSOLE);
512 annotation_level = 1;
513 /* We have probably been invoked from emacs. Disable window interface. */
529 cmdarg[ncmd].type = CMDARG_FILE;
530 cmdarg[ncmd++].string = optarg;
534 cmdarg = xrealloc ((char *) cmdarg,
535 cmdsize * sizeof (*cmdarg));
539 cmdarg[ncmd].type = CMDARG_COMMAND;
540 cmdarg[ncmd++].string = optarg;
544 cmdarg = xrealloc ((char *) cmdarg,
545 cmdsize * sizeof (*cmdarg));
549 batch_flag = batch_silent = 1;
550 gdb_stdout = ui_file_new();
555 extern int gdbtk_test (char *);
556 if (!gdbtk_test (optarg))
558 fprintf_unfiltered (gdb_stderr, _("%s: unable to load tclcommand file \"%s\""),
565 /* Backwards compatibility only. */
569 external_editor_command = xstrdup (optarg);
574 xfree (interpreter_p);
575 interpreter_p = xstrdup (optarg);
578 dirarg[ndir++] = optarg;
582 dirarg = (char **) xrealloc ((char *) dirarg,
583 dirsize * sizeof (*dirarg));
597 i = strtol (optarg, &p, 0);
598 if (i == 0 && p == optarg)
600 /* Don't use *_filtered or warning() (which relies on
601 current_target) until after initialize_all_files(). */
605 _("warning: could not set baud rate to `%s'.\n"), optarg);
615 i = strtol (optarg, &p, 0);
616 if (i == 0 && p == optarg)
618 /* Don't use *_filtered or warning() (which relies on
619 current_target) until after initialize_all_files(). */
623 _("warning: could not set timeout limit to `%s'.\n"), optarg);
630 fprintf_unfiltered (gdb_stderr,
631 _("Use `%s --help' for a complete list of options.\n"),
637 /* If --help or --version, disable window interface. */
638 if (print_help || print_version)
647 /* Initialize all files. Give the interpreter a chance to take
648 control of the console via the deprecated_init_ui_hook (). */
651 /* Now that gdb_init has created the initial inferior, we're in position
652 to set args for that inferior. */
655 /* The remaining options are the command-line options for the
656 inferior. The first one is the sym/exec file, and the rest
660 fprintf_unfiltered (gdb_stderr,
661 _("%s: `--args' specified but no program specified\n"),
665 symarg = argv[optind];
666 execarg = argv[optind];
668 set_inferior_args_vector (argc - optind, &argv[optind]);
672 /* OK, that's all the options. */
674 /* The first argument, if specified, is the name of the
678 symarg = argv[optind];
679 execarg = argv[optind];
683 /* If the user hasn't already specified a PID or the name of a
684 core file, then a second optional argument is allowed. If
685 present, this argument should be interpreted as either a
686 PID or a core file, whichever works. */
687 if (pidarg == NULL && corearg == NULL && optind < argc)
689 pid_or_core_arg = argv[optind];
693 /* Any argument left on the command line is unexpected and
694 will be ignored. Inform the user. */
696 fprintf_unfiltered (gdb_stderr, _("\
697 Excess command line arguments ignored. (%s%s)\n"),
699 (optind == argc - 1) ? "" : " ...");
702 /* Lookup gdbinit files. Note that the gdbinit file name may be overriden
703 during file initialization, so get_init_files should be called after
705 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
707 /* Do these (and anything which might call wrap_here or *_filtered)
708 after initialize_all_files() but before the interpreter has been
709 installed. Otherwize the help/version messages will be eaten by
710 the interpreter's output handler. */
714 print_gdb_version (gdb_stdout);
716 printf_filtered ("\n");
722 print_gdb_help (gdb_stdout);
723 fputs_unfiltered ("\n", gdb_stdout);
727 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
728 GDB retain the old MI1 interpreter startup behavior. Output the
729 copyright message before the interpreter is installed. That way
730 it isn't encapsulated in MI output. */
731 if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0)
733 /* Print all the junk at the top, with trailing "..." if we are about
734 to read a symbol file (possibly slowly). */
735 print_gdb_version (gdb_stdout);
737 printf_filtered ("..");
739 printf_filtered ("\n");
740 gdb_flush (gdb_stdout); /* Force to screen during slow operations */
744 /* Install the default UI. All the interpreters should have had a
745 look at things by now. Initialize the default interpreter. */
749 struct interp *interp = interp_lookup (interpreter_p);
752 error (_("Interpreter `%s' unrecognized"), interpreter_p);
754 if (!interp_set (interp, 1))
756 fprintf_unfiltered (gdb_stderr,
757 "Interpreter `%s' failed to initialize.\n",
763 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
764 GDB retain the old MI1 interpreter startup behavior. Output the
765 copyright message after the interpreter is installed when it is
766 any sane interpreter. */
767 if (!quiet && !current_interp_named_p (INTERP_MI1))
769 /* Print all the junk at the top, with trailing "..." if we are about
770 to read a symbol file (possibly slowly). */
771 print_gdb_version (gdb_stdout);
773 printf_filtered ("..");
775 printf_filtered ("\n");
776 gdb_flush (gdb_stdout); /* Force to screen during slow operations */
779 /* Set off error and warning messages with a blank line. */
780 error_pre_print = "\n";
781 quit_pre_print = error_pre_print;
782 warning_pre_print = _("\nwarning: ");
784 /* Read and execute the system-wide gdbinit file, if it exists.
785 This is done *before* all the command line arguments are
786 processed; it sets global parameters, which are independent of
787 what file you are debugging or what directory you are in. */
788 if (system_gdbinit && !inhibit_gdbinit)
789 catch_command_errors (source_script, system_gdbinit, 0, RETURN_MASK_ALL);
791 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
792 *before* all the command line arguments are processed; it sets
793 global parameters, which are independent of what file you are
794 debugging or what directory you are in. */
796 if (home_gdbinit && !inhibit_gdbinit)
797 catch_command_errors (source_script, home_gdbinit, 0, RETURN_MASK_ALL);
799 /* Now perform all the actions indicated by the arguments. */
802 catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL);
805 for (i = 0; i < ndir; i++)
806 catch_command_errors (directory_switch, dirarg[i], 0, RETURN_MASK_ALL);
809 /* Skip auto-loading section-specified scripts until we've sourced
810 local_gdbinit (which is often used to augment the source search path). */
811 save_auto_load = gdbpy_global_auto_load;
812 gdbpy_global_auto_load = 0;
816 && strcmp (execarg, symarg) == 0)
818 /* The exec file and the symbol-file are the same. If we can't
819 open it, better only print one error message.
820 catch_command_errors returns non-zero on success! */
821 if (catch_command_errors (exec_file_attach, execarg, !batch_flag, RETURN_MASK_ALL))
822 catch_command_errors (symbol_file_add_main, symarg, !batch_flag, RETURN_MASK_ALL);
827 catch_command_errors (exec_file_attach, execarg, !batch_flag, RETURN_MASK_ALL);
829 catch_command_errors (symbol_file_add_main, symarg, !batch_flag, RETURN_MASK_ALL);
832 if (corearg && pidarg)
834 Can't attach to process and specify a core file at the same time."));
837 catch_command_errors (core_file_command, corearg,
838 !batch_flag, RETURN_MASK_ALL);
839 else if (pidarg != NULL)
840 catch_command_errors (attach_command, pidarg,
841 !batch_flag, RETURN_MASK_ALL);
842 else if (pid_or_core_arg)
844 /* The user specified 'gdb program pid' or gdb program core'.
845 If pid_or_core_arg's first character is a digit, try attach
846 first and then corefile. Otherwise try just corefile. */
848 if (isdigit (pid_or_core_arg[0]))
850 if (catch_command_errors (attach_command, pid_or_core_arg,
851 !batch_flag, RETURN_MASK_ALL) == 0)
852 catch_command_errors (core_file_command, pid_or_core_arg,
853 !batch_flag, RETURN_MASK_ALL);
855 else /* Can't be a pid, better be a corefile. */
856 catch_command_errors (core_file_command, pid_or_core_arg,
857 !batch_flag, RETURN_MASK_ALL);
861 set_inferior_io_terminal (ttyarg);
863 /* Error messages should no longer be distinguished with extra output. */
864 error_pre_print = NULL;
865 quit_pre_print = NULL;
866 warning_pre_print = _("warning: ");
868 /* Read the .gdbinit file in the current directory, *if* it isn't
869 the same as the $HOME/.gdbinit file (it should exist, also). */
870 if (local_gdbinit && !inhibit_gdbinit)
871 catch_command_errors (source_script, local_gdbinit, 0, RETURN_MASK_ALL);
873 /* Now that all .gdbinit's have been read and all -d options have been
874 processed, we can read any scripts mentioned in SYMARG.
875 We wait until now because it is common to add to the source search
876 path in local_gdbinit. */
877 gdbpy_global_auto_load = save_auto_load;
878 if (symfile_objfile != NULL)
879 load_auto_scripts_for_objfile (symfile_objfile);
881 for (i = 0; i < ncmd; i++)
883 if (cmdarg[i].type == CMDARG_FILE)
884 catch_command_errors (source_script, cmdarg[i].string,
885 !batch_flag, RETURN_MASK_ALL);
886 else /* cmdarg[i].type == CMDARG_COMMAND */
887 catch_command_errors (execute_command, cmdarg[i].string,
888 !batch_flag, RETURN_MASK_ALL);
892 /* Read in the old history after all the command files have been read. */
897 /* We have hit the end of the batch file. */
898 quit_force (NULL, 0);
901 /* Show time and/or space usage. */
902 do_cleanups (pre_stat_chain);
904 /* NOTE: cagney/1999-11-07: There is probably no reason for not
905 moving this loop and the code found in captured_command_loop()
906 into the command_loop() proper. The main thing holding back that
907 change - SET_TOP_LEVEL() - has been eliminated. */
910 catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL);
912 /* No exit -- exit is through quit_command. */
916 gdb_main (struct captured_main_args *args)
918 use_windows = args->use_windows;
919 catch_errors (captured_main, args, "", RETURN_MASK_ALL);
920 /* The only way to end up here is by an error (normal exit is
921 handled by quit_force()), hence always return an error status. */
926 /* Don't use *_filtered for printing help. We don't want to prompt
927 for continue no matter how small the screen or how much we're going
931 print_gdb_help (struct ui_file *stream)
933 char *system_gdbinit;
937 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
939 fputs_unfiltered (_("\
940 This is the GNU debugger. Usage:\n\n\
941 gdb [options] [executable-file [core-file or process-id]]\n\
942 gdb [options] --args executable-file [inferior-arguments ...]\n\n\
945 fputs_unfiltered (_("\
946 --args Arguments after executable-file are passed to inferior\n\
948 fputs_unfiltered (_("\
949 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
950 --batch Exit after processing options.\n\
951 --batch-silent As for --batch, but suppress all gdb stdout output.\n\
952 --return-child-result\n\
953 GDB exit code will be the child's exit code.\n\
954 --cd=DIR Change current directory to DIR.\n\
955 --command=FILE, -x Execute GDB commands from FILE.\n\
956 --eval-command=COMMAND, -ex\n\
957 Execute a single GDB command.\n\
958 May be used multiple times and in conjunction\n\
960 --core=COREFILE Analyze the core dump COREFILE.\n\
961 --pid=PID Attach to running process PID.\n\
963 fputs_unfiltered (_("\
964 --dbx DBX compatibility mode.\n\
965 --directory=DIR Search for source files in DIR.\n\
966 --epoch Output information used by epoch emacs-GDB interface.\n\
967 --exec=EXECFILE Use EXECFILE as the executable.\n\
968 --fullname Output information used by emacs-GDB interface.\n\
969 --help Print this message.\n\
971 fputs_unfiltered (_("\
972 --interpreter=INTERP\n\
973 Select a specific interpreter / user interface\n\
975 fputs_unfiltered (_("\
976 -l TIMEOUT Set timeout in seconds for remote debugging.\n\
977 --nw Do not use a window interface.\n\
978 --nx Do not read "), stream);
979 fputs_unfiltered (gdbinit, stream);
980 fputs_unfiltered (_(" file.\n\
981 --quiet Do not print version number on startup.\n\
982 --readnow Fully read symbol files on first access.\n\
984 fputs_unfiltered (_("\
985 --se=FILE Use FILE as symbol file and executable file.\n\
986 --symbols=SYMFILE Read symbols from SYMFILE.\n\
987 --tty=TTY Use TTY for input/output by the program being debugged.\n\
990 fputs_unfiltered (_("\
991 --tui Use a terminal user interface.\n\
994 fputs_unfiltered (_("\
995 --version Print version information and then exit.\n\
996 -w Use a window interface.\n\
997 --write Set writing into executable and core files.\n\
998 --xdb XDB compatibility mode.\n\
1000 fputs_unfiltered (_("\n\
1001 At startup, GDB reads the following init files and executes their commands:\n\
1004 fprintf_unfiltered (stream, _("\
1005 * system-wide init file: %s\n\
1006 "), system_gdbinit);
1008 fprintf_unfiltered (stream, _("\
1009 * user-specific init file: %s\n\
1012 fprintf_unfiltered (stream, _("\
1013 * local init file: ./%s\n\
1015 fputs_unfiltered (_("\n\
1016 For more information, type \"help\" from within GDB, or consult the\n\
1017 GDB manual (available as on-line info or a printed manual).\n\
1019 if (REPORT_BUGS_TO[0] && stream == gdb_stdout)
1020 fprintf_unfiltered (stream, _("\
1021 Report bugs to \"%s\".\n\
1022 "), REPORT_BUGS_TO);