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 /* DragonFly kgdb support */
97 static void print_gdb_help (struct ui_file *);
99 /* These two are used to set the external editor commands when gdb is farming
100 out files to be edited by another program. */
102 extern char *external_editor_command;
104 /* Relocate a file or directory. PROGNAME is the name by which gdb
105 was invoked (i.e., argv[0]). INITIAL is the default value for the
106 file or directory. FLAG is true if the value is relocatable, false
107 otherwise. Returns a newly allocated string; this may return NULL
108 under the same conditions as make_relative_prefix. */
110 relocate_path (const char *progname, const char *initial, int flag)
113 return make_relative_prefix (progname, BINDIR, initial);
114 return xstrdup (initial);
117 /* Like relocate_path, but specifically checks for a directory.
118 INITIAL is relocated according to the rules of relocate_path. If
119 the result is a directory, it is used; otherwise, INITIAL is used.
120 The chosen directory is then canonicalized using lrealpath. This
121 function always returns a newly-allocated string. */
123 relocate_directory (const char *progname, const char *initial, int flag)
127 dir = relocate_path (progname, initial, flag);
132 if (stat (dir, &s) != 0 || !S_ISDIR (s.st_mode))
139 dir = xstrdup (initial);
141 /* Canonicalize the directory. */
144 char *canon_sysroot = lrealpath (dir);
156 /* Compute the locations of init files that GDB should source and return
157 them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If there is
158 no system gdbinit (resp. home gdbinit and local gdbinit) to be loaded,
159 then SYSTEM_GDBINIT (resp. HOME_GDBINIT and LOCAL_GDBINIT) is set to
162 get_init_files (char **system_gdbinit,
164 char **local_gdbinit)
166 static char *sysgdbinit = NULL;
167 static char *homeinit = NULL;
168 static char *localinit = NULL;
169 static int initialized = 0;
173 struct stat homebuf, cwdbuf, s;
174 char *homedir, *relocated_sysgdbinit;
176 if (SYSTEM_GDBINIT[0])
178 relocated_sysgdbinit = relocate_path (gdb_program_name,
180 SYSTEM_GDBINIT_RELOCATABLE);
181 if (relocated_sysgdbinit && stat (relocated_sysgdbinit, &s) == 0)
182 sysgdbinit = relocated_sysgdbinit;
184 xfree (relocated_sysgdbinit);
187 homedir = getenv ("HOME");
189 /* If the .gdbinit file in the current directory is the same as
190 the $HOME/.gdbinit file, it should not be sourced. homebuf
191 and cwdbuf are used in that purpose. Make sure that the stats
192 are zero in case one of them fails (this guarantees that they
193 won't match if either exists). */
195 memset (&homebuf, 0, sizeof (struct stat));
196 memset (&cwdbuf, 0, sizeof (struct stat));
200 homeinit = xstrprintf ("%s/%s", homedir, gdbinit);
201 if (stat (homeinit, &homebuf) != 0)
208 if (stat (gdbinit, &cwdbuf) == 0)
211 || memcmp ((char *) &homebuf, (char *) &cwdbuf,
212 sizeof (struct stat)))
219 *system_gdbinit = sysgdbinit;
220 *home_gdbinit = homeinit;
221 *local_gdbinit = localinit;
224 /* Call command_loop. If it happens to return, pass that through as a
225 non-zero return status. */
228 captured_command_loop (void *data)
230 current_interp_command_loop ();
231 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
232 would clean things up (restoring the cleanup chain) to the state
233 they were just prior to the call. Technically, this means that
234 the do_cleanups() below is redundant. Unfortunately, many FUNCs
235 are not that well behaved. do_cleanups should either be replaced
236 with a do_cleanups call (to cover the problem) or an assertion
237 check to detect bad FUNCs code. */
238 do_cleanups (ALL_CLEANUPS);
239 /* If the command_loop returned, normally (rather than threw an
240 error) we try to quit. If the quit is aborted, catch_errors()
241 which called this catch the signal and restart the command
243 quit_command (NULL, instream == stdin);
248 captured_main (void *data)
250 struct captured_main_args *context = data;
251 int argc = context->argc;
252 char **argv = context->argv;
253 static int quiet = 0;
254 static int set_args = 0;
256 /* Pointers to various arguments from command line. */
258 char *execarg = NULL;
260 char *corearg = NULL;
261 char *pid_or_core_arg = NULL;
265 /* These are static so that we can take their address in an initializer. */
266 static int print_help;
267 static int print_version;
269 /* Pointers to all arguments of --command option. */
277 /* Allocated size of cmdarg. */
279 /* Number of elements of cmdarg used. */
282 /* Indices of all arguments of --directory option. */
284 /* Allocated size. */
286 /* Number of elements used. */
289 /* gdb init files. */
290 char *system_gdbinit;
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). */
389 static struct option long_options[] =
391 {"tui", no_argument, 0, OPT_TUI},
392 {"xdb", no_argument, &xdb_commands, 1},
393 {"dbx", no_argument, &dbx_commands, 1},
394 {"readnow", no_argument, &readnow_symbol_files, 1},
395 {"r", no_argument, &readnow_symbol_files, 1},
396 {"quiet", no_argument, &quiet, 1},
397 {"q", no_argument, &quiet, 1},
398 {"silent", no_argument, &quiet, 1},
399 {"nx", no_argument, &inhibit_gdbinit, 1},
400 {"n", no_argument, &inhibit_gdbinit, 1},
401 {"batch-silent", no_argument, 0, 'B'},
402 {"batch", no_argument, &batch_flag, 1},
403 {"epoch", no_argument, &epoch_interface, 1},
405 /* This is a synonym for "--annotate=1". --annotate is now preferred,
406 but keep this here for a long time because people will be running
407 emacses which use --fullname. */
408 {"fullname", no_argument, 0, 'f'},
409 {"f", no_argument, 0, 'f'},
411 {"kernel", no_argument, 0, OPT_KGDB},
412 {"annotate", required_argument, 0, OPT_ANNOTATE},
413 {"help", no_argument, &print_help, 1},
414 {"se", required_argument, 0, OPT_SE},
415 {"symbols", required_argument, 0, 's'},
416 {"s", required_argument, 0, 's'},
417 {"exec", required_argument, 0, 'e'},
418 {"e", required_argument, 0, 'e'},
419 {"core", required_argument, 0, 'c'},
420 {"c", required_argument, 0, 'c'},
421 {"pid", required_argument, 0, 'p'},
422 {"p", required_argument, 0, 'p'},
423 {"command", required_argument, 0, 'x'},
424 {"eval-command", required_argument, 0, 'X'},
425 {"version", no_argument, &print_version, 1},
426 {"x", required_argument, 0, 'x'},
427 {"ex", required_argument, 0, 'X'},
429 {"tclcommand", required_argument, 0, 'z'},
430 {"enable-external-editor", no_argument, 0, 'y'},
431 {"editor-command", required_argument, 0, 'w'},
433 {"ui", required_argument, 0, 'i'},
434 {"interpreter", required_argument, 0, 'i'},
435 {"i", required_argument, 0, 'i'},
436 {"directory", required_argument, 0, 'd'},
437 {"d", required_argument, 0, 'd'},
438 {"cd", required_argument, 0, OPT_CD},
439 {"tty", required_argument, 0, 't'},
440 {"baud", required_argument, 0, 'b'},
441 {"b", required_argument, 0, 'b'},
442 {"nw", no_argument, NULL, OPT_NOWINDOWS},
443 {"nowindows", no_argument, NULL, OPT_NOWINDOWS},
444 {"w", no_argument, NULL, OPT_WINDOWS},
445 {"windows", no_argument, NULL, OPT_WINDOWS},
446 {"statistics", no_argument, 0, OPT_STATISTICS},
447 {"write", no_argument, &write_files, 1},
448 {"args", no_argument, &set_args, 1},
449 {"l", required_argument, 0, 'l'},
450 {"return-child-result", no_argument, &return_child_result, 1},
451 {0, no_argument, 0, 0}
458 c = getopt_long_only (argc, argv, "",
459 long_options, &option_index);
460 if (c == EOF || set_args)
463 /* Long option that takes an argument. */
464 if (c == 0 && long_options[option_index].flag == 0)
465 c = long_options[option_index].val;
470 /* Long option that just sets a flag. */
480 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
481 annotation_level = atoi (optarg);
484 /* Enable the display of both time and space usage. */
485 set_display_time (1);
486 set_display_space (1);
489 /* --tui is equivalent to -i=tui. */
491 xfree (interpreter_p);
492 interpreter_p = xstrdup (INTERP_TUI);
494 fprintf_unfiltered (gdb_stderr,
495 _("%s: TUI mode is not supported\n"),
504 /* FIXME: cagney/2003-03-01: Not sure if this option is
505 actually useful, and if it is, what it should do. */
507 /* --windows is equivalent to -i=insight. */
508 xfree (interpreter_p);
509 interpreter_p = xstrdup (INTERP_INSIGHT);
514 /* -nw is equivalent to -i=console. */
515 xfree (interpreter_p);
516 interpreter_p = xstrdup (INTERP_CONSOLE);
520 annotation_level = 1;
521 /* We have probably been invoked from emacs. Disable window interface. */
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();
563 extern int gdbtk_test (char *);
564 if (!gdbtk_test (optarg))
566 fprintf_unfiltered (gdb_stderr, _("%s: unable to load tclcommand file \"%s\""),
573 /* Backwards compatibility only. */
577 external_editor_command = xstrdup (optarg);
582 xfree (interpreter_p);
583 interpreter_p = xstrdup (optarg);
586 dirarg[ndir++] = optarg;
590 dirarg = (char **) xrealloc ((char *) dirarg,
591 dirsize * sizeof (*dirarg));
605 i = strtol (optarg, &p, 0);
606 if (i == 0 && p == optarg)
608 /* Don't use *_filtered or warning() (which relies on
609 current_target) until after initialize_all_files(). */
613 _("warning: could not set baud rate to `%s'.\n"), optarg);
623 i = strtol (optarg, &p, 0);
624 if (i == 0 && p == optarg)
626 /* Don't use *_filtered or warning() (which relies on
627 current_target) until after initialize_all_files(). */
631 _("warning: could not set timeout limit to `%s'.\n"), optarg);
638 fprintf_unfiltered (gdb_stderr,
639 _("Use `%s --help' for a complete list of options.\n"),
645 /* If --help or --version, disable window interface. */
646 if (print_help || print_version)
655 /* Initialize all files. Give the interpreter a chance to take
656 control of the console via the deprecated_init_ui_hook (). */
659 /* Now that gdb_init has created the initial inferior, we're in position
660 to set args for that inferior. */
663 /* The remaining options are the command-line options for the
664 inferior. The first one is the sym/exec file, and the rest
668 fprintf_unfiltered (gdb_stderr,
669 _("%s: `--args' specified but no program specified\n"),
673 symarg = argv[optind];
674 execarg = argv[optind];
676 set_inferior_args_vector (argc - optind, &argv[optind]);
680 /* OK, that's all the options. */
682 /* The first argument, if specified, is the name of the
686 symarg = argv[optind];
687 execarg = argv[optind];
691 /* If the user hasn't already specified a PID or the name of a
692 core file, then a second optional argument is allowed. If
693 present, this argument should be interpreted as either a
694 PID or a core file, whichever works. */
695 if (pidarg == NULL && corearg == NULL && optind < argc)
697 pid_or_core_arg = argv[optind];
701 /* Any argument left on the command line is unexpected and
702 will be ignored. Inform the user. */
704 fprintf_unfiltered (gdb_stderr, _("\
705 Excess command line arguments ignored. (%s%s)\n"),
707 (optind == argc - 1) ? "" : " ...");
710 /* Lookup gdbinit files. Note that the gdbinit file name may be overriden
711 during file initialization, so get_init_files should be called after
713 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
715 /* Do these (and anything which might call wrap_here or *_filtered)
716 after initialize_all_files() but before the interpreter has been
717 installed. Otherwize the help/version messages will be eaten by
718 the interpreter's output handler. */
722 print_gdb_version (gdb_stdout);
724 printf_filtered ("\n");
730 print_gdb_help (gdb_stdout);
731 fputs_unfiltered ("\n", gdb_stdout);
735 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
736 GDB retain the old MI1 interpreter startup behavior. Output the
737 copyright message before the interpreter is installed. That way
738 it isn't encapsulated in MI output. */
739 if (!quiet && strcmp (interpreter_p, INTERP_MI1) == 0)
741 /* Print all the junk at the top, with trailing "..." if we are about
742 to read a symbol file (possibly slowly). */
743 print_gdb_version (gdb_stdout);
745 printf_filtered ("..");
747 printf_filtered ("\n");
748 gdb_flush (gdb_stdout); /* Force to screen during slow operations */
752 /* Install the default UI. All the interpreters should have had a
753 look at things by now. Initialize the default interpreter. */
757 struct interp *interp = interp_lookup (interpreter_p);
760 error (_("Interpreter `%s' unrecognized"), interpreter_p);
762 if (!interp_set (interp, 1))
764 fprintf_unfiltered (gdb_stderr,
765 "Interpreter `%s' failed to initialize.\n",
771 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
772 GDB retain the old MI1 interpreter startup behavior. Output the
773 copyright message after the interpreter is installed when it is
774 any sane interpreter. */
775 if (!quiet && !current_interp_named_p (INTERP_MI1))
777 /* Print all the junk at the top, with trailing "..." if we are about
778 to read a symbol file (possibly slowly). */
779 print_gdb_version (gdb_stdout);
781 printf_filtered ("..");
783 printf_filtered ("\n");
784 gdb_flush (gdb_stdout); /* Force to screen during slow operations */
787 /* Set off error and warning messages with a blank line. */
788 error_pre_print = "\n";
789 quit_pre_print = error_pre_print;
790 warning_pre_print = _("\nwarning: ");
792 /* Read and execute the system-wide gdbinit file, if it exists.
793 This is done *before* all the command line arguments are
794 processed; it sets global parameters, which are independent of
795 what file you are debugging or what directory you are in. */
796 if (system_gdbinit && !inhibit_gdbinit)
797 catch_command_errors (source_script, system_gdbinit, 0, RETURN_MASK_ALL);
799 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
800 *before* all the command line arguments are processed; it sets
801 global parameters, which are independent of what file you are
802 debugging or what directory you are in. */
804 if (home_gdbinit && !inhibit_gdbinit)
805 catch_command_errors (source_script, home_gdbinit, 0, RETURN_MASK_ALL);
807 /* Now perform all the actions indicated by the arguments. */
810 catch_command_errors (cd_command, cdarg, 0, RETURN_MASK_ALL);
813 for (i = 0; i < ndir; i++)
814 catch_command_errors (directory_switch, dirarg[i], 0, RETURN_MASK_ALL);
817 /* Skip auto-loading section-specified scripts until we've sourced
818 local_gdbinit (which is often used to augment the source search path). */
819 save_auto_load = gdbpy_global_auto_load;
820 gdbpy_global_auto_load = 0;
824 && strcmp (execarg, symarg) == 0)
826 /* The exec file and the symbol-file are the same. If we can't
827 open it, better only print one error message.
828 catch_command_errors returns non-zero on success! */
829 if (catch_command_errors (exec_file_attach, execarg, !batch_flag, RETURN_MASK_ALL))
830 catch_command_errors (symbol_file_add_main, symarg, !batch_flag, RETURN_MASK_ALL);
835 catch_command_errors (exec_file_attach, execarg, !batch_flag, RETURN_MASK_ALL);
837 catch_command_errors (symbol_file_add_main, symarg, !batch_flag, RETURN_MASK_ALL);
840 if (corearg && pidarg)
842 Can't attach to process and specify a core file at the same time."));
845 catch_command_errors (core_file_command, corearg,
846 !batch_flag, RETURN_MASK_ALL);
847 else if (pidarg != NULL)
848 catch_command_errors (attach_command, pidarg,
849 !batch_flag, RETURN_MASK_ALL);
850 else if (pid_or_core_arg)
852 /* The user specified 'gdb program pid' or gdb program core'.
853 If pid_or_core_arg's first character is a digit, try attach
854 first and then corefile. Otherwise try just corefile. */
856 if (isdigit (pid_or_core_arg[0]))
858 if (catch_command_errors (attach_command, pid_or_core_arg,
859 !batch_flag, RETURN_MASK_ALL) == 0)
860 catch_command_errors (core_file_command, pid_or_core_arg,
861 !batch_flag, RETURN_MASK_ALL);
863 else /* Can't be a pid, better be a corefile. */
864 catch_command_errors (core_file_command, pid_or_core_arg,
865 !batch_flag, RETURN_MASK_ALL);
869 set_inferior_io_terminal (ttyarg);
871 /* Error messages should no longer be distinguished with extra output. */
872 error_pre_print = NULL;
873 quit_pre_print = NULL;
874 warning_pre_print = _("warning: ");
876 /* Read the .gdbinit file in the current directory, *if* it isn't
877 the same as the $HOME/.gdbinit file (it should exist, also). */
878 if (local_gdbinit && !inhibit_gdbinit)
879 catch_command_errors (source_script, local_gdbinit, 0, RETURN_MASK_ALL);
881 /* Now that all .gdbinit's have been read and all -d options have been
882 processed, we can read any scripts mentioned in SYMARG.
883 We wait until now because it is common to add to the source search
884 path in local_gdbinit. */
885 gdbpy_global_auto_load = save_auto_load;
886 if (symfile_objfile != NULL)
887 load_auto_scripts_for_objfile (symfile_objfile);
889 for (i = 0; i < ncmd; i++)
891 if (cmdarg[i].type == CMDARG_FILE)
892 catch_command_errors (source_script, cmdarg[i].string,
893 !batch_flag, RETURN_MASK_ALL);
894 else /* cmdarg[i].type == CMDARG_COMMAND */
895 catch_command_errors (execute_command, cmdarg[i].string,
896 !batch_flag, RETURN_MASK_ALL);
900 /* Read in the old history after all the command files have been read. */
905 /* We have hit the end of the batch file. */
906 quit_force (NULL, 0);
909 /* Show time and/or space usage. */
910 do_cleanups (pre_stat_chain);
912 /* NOTE: cagney/1999-11-07: There is probably no reason for not
913 moving this loop and the code found in captured_command_loop()
914 into the command_loop() proper. The main thing holding back that
915 change - SET_TOP_LEVEL() - has been eliminated. */
918 catch_errors (captured_command_loop, 0, "", RETURN_MASK_ALL);
920 /* No exit -- exit is through quit_command. */
924 gdb_main (struct captured_main_args *args)
927 use_windows = args->use_windows;
928 catch_errors (captured_main, args, "", RETURN_MASK_ALL);
929 /* The only way to end up here is by an error (normal exit is
930 handled by quit_force()), hence always return an error status. */
935 /* Don't use *_filtered for printing help. We don't want to prompt
936 for continue no matter how small the screen or how much we're going
940 print_gdb_help (struct ui_file *stream)
942 char *system_gdbinit;
946 get_init_files (&system_gdbinit, &home_gdbinit, &local_gdbinit);
948 fputs_unfiltered (_("\
949 This is the GNU debugger. Usage:\n\n\
950 gdb [options] [executable-file [core-file or process-id]]\n\
951 gdb [options] --args executable-file [inferior-arguments ...]\n\n\
954 fputs_unfiltered (_("\
955 --args Arguments after executable-file are passed to inferior\n\
957 fputs_unfiltered (_("\
958 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
959 --batch Exit after processing options.\n\
960 --batch-silent As for --batch, but suppress all gdb stdout output.\n\
961 --return-child-result\n\
962 GDB exit code will be the child's exit code.\n\
963 --cd=DIR Change current directory to DIR.\n\
964 --command=FILE, -x Execute GDB commands from FILE.\n\
965 --eval-command=COMMAND, -ex\n\
966 Execute a single GDB command.\n\
967 May be used multiple times and in conjunction\n\
969 --core=COREFILE Analyze the core dump COREFILE.\n\
970 --pid=PID Attach to running process PID.\n\
972 fputs_unfiltered (_("\
973 --dbx DBX compatibility mode.\n\
974 --directory=DIR Search for source files in DIR.\n\
975 --epoch Output information used by epoch emacs-GDB interface.\n\
976 --exec=EXECFILE Use EXECFILE as the executable.\n\
977 --fullname Output information used by emacs-GDB interface.\n\
978 --help Print this message.\n\
980 fputs_unfiltered (_("\
981 --interpreter=INTERP\n\
982 Select a specific interpreter / user interface\n\
984 fputs_unfiltered (_("\
985 -l TIMEOUT Set timeout in seconds for remote debugging.\n\
986 --nw Do not use a window interface.\n\
987 --nx Do not read "), stream);
988 fputs_unfiltered (gdbinit, stream);
989 fputs_unfiltered (_(" file.\n\
990 --quiet Do not print version number on startup.\n\
991 --readnow Fully read symbol files on first access.\n\
993 fputs_unfiltered (_("\
994 --se=FILE Use FILE as symbol file and executable file.\n\
995 --symbols=SYMFILE Read symbols from SYMFILE.\n\
996 --tty=TTY Use TTY for input/output by the program being debugged.\n\
999 fputs_unfiltered (_("\
1000 --tui Use a terminal user interface.\n\
1003 fputs_unfiltered (_("\
1004 --version Print version information and then exit.\n\
1005 -w Use a window interface.\n\
1006 --write Set writing into executable and core files.\n\
1007 --xdb XDB compatibility mode.\n\
1009 fputs_unfiltered (_("\n\
1010 At startup, GDB reads the following init files and executes their commands:\n\
1013 fprintf_unfiltered (stream, _("\
1014 * system-wide init file: %s\n\
1015 "), system_gdbinit);
1017 fprintf_unfiltered (stream, _("\
1018 * user-specific init file: %s\n\
1021 fprintf_unfiltered (stream, _("\
1022 * local init file: ./%s\n\
1024 fputs_unfiltered (_("\n\
1025 For more information, type \"help\" from within GDB, or consult the\n\
1026 GDB manual (available as on-line info or a printed manual).\n\
1028 if (REPORT_BUGS_TO[0] && stream == gdb_stdout)
1029 fprintf_unfiltered (stream, _("\
1030 Report bugs to \"%s\".\n\
1031 "), REPORT_BUGS_TO);