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"
45 /* If nonzero, display time usage both at startup and for each command. */
49 /* If nonzero, display space usage both at startup and for each command. */
53 /* The selected interpreter. This will be used as a set command
54 variable, so it should always be malloc'ed - since
55 do_setshow_command will free it. */
58 /* Whether xdb commands will be handled */
61 /* Whether dbx commands will be handled */
64 /* System root path, used to find libraries etc. */
65 char *gdb_sysroot
= 0;
67 /* GDB datadir, used to store data files. */
68 char *gdb_datadir
= 0;
70 struct ui_file
*gdb_stdout
;
71 struct ui_file
*gdb_stderr
;
72 struct ui_file
*gdb_stdlog
;
73 struct ui_file
*gdb_stdin
;
74 /* target IO streams */
75 struct ui_file
*gdb_stdtargin
;
76 struct ui_file
*gdb_stdtarg
;
77 struct ui_file
*gdb_stdtargerr
;
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
);
152 /* Compute the locations of init files that GDB should source and return
153 them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If there is
154 no system gdbinit (resp. home gdbinit and local gdbinit) to be loaded,
155 then SYSTEM_GDBINIT (resp. HOME_GDBINIT and LOCAL_GDBINIT) is set to
158 get_init_files (char **system_gdbinit
,
160 char **local_gdbinit
)
162 static char *sysgdbinit
= NULL
;
163 static char *homeinit
= NULL
;
164 static char *localinit
= NULL
;
165 static int initialized
= 0;
169 struct stat homebuf
, cwdbuf
, s
;
170 char *homedir
, *relocated_sysgdbinit
;
172 if (SYSTEM_GDBINIT
[0])
174 relocated_sysgdbinit
= relocate_path (gdb_program_name
,
176 SYSTEM_GDBINIT_RELOCATABLE
);
177 if (relocated_sysgdbinit
&& stat (relocated_sysgdbinit
, &s
) == 0)
178 sysgdbinit
= relocated_sysgdbinit
;
180 xfree (relocated_sysgdbinit
);
183 homedir
= getenv ("HOME");
185 /* If the .gdbinit file in the current directory is the same as
186 the $HOME/.gdbinit file, it should not be sourced. homebuf
187 and cwdbuf are used in that purpose. Make sure that the stats
188 are zero in case one of them fails (this guarantees that they
189 won't match if either exists). */
191 memset (&homebuf
, 0, sizeof (struct stat
));
192 memset (&cwdbuf
, 0, sizeof (struct stat
));
196 homeinit
= xstrprintf ("%s/%s", homedir
, gdbinit
);
197 if (stat (homeinit
, &homebuf
) != 0)
204 if (stat (gdbinit
, &cwdbuf
) == 0)
207 || memcmp ((char *) &homebuf
, (char *) &cwdbuf
,
208 sizeof (struct stat
)))
215 *system_gdbinit
= sysgdbinit
;
216 *home_gdbinit
= homeinit
;
217 *local_gdbinit
= localinit
;
220 /* Call command_loop. If it happens to return, pass that through as a
221 non-zero return status. */
224 captured_command_loop (void *data
)
226 current_interp_command_loop ();
227 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
228 would clean things up (restoring the cleanup chain) to the state
229 they were just prior to the call. Technically, this means that
230 the do_cleanups() below is redundant. Unfortunately, many FUNCs
231 are not that well behaved. do_cleanups should either be replaced
232 with a do_cleanups call (to cover the problem) or an assertion
233 check to detect bad FUNCs code. */
234 do_cleanups (ALL_CLEANUPS
);
235 /* If the command_loop returned, normally (rather than threw an
236 error) we try to quit. If the quit is aborted, catch_errors()
237 which called this catch the signal and restart the command
239 quit_command (NULL
, instream
== stdin
);
244 captured_main (void *data
)
246 struct captured_main_args
*context
= data
;
247 int argc
= context
->argc
;
248 char **argv
= context
->argv
;
249 static int quiet
= 0;
250 static int batch
= 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
;
293 long time_at_startup
= get_run_time ();
295 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
296 setlocale (LC_MESSAGES
, "");
298 #if defined (HAVE_SETLOCALE)
299 setlocale (LC_CTYPE
, "");
301 bindtextdomain (PACKAGE
, LOCALEDIR
);
302 textdomain (PACKAGE
);
305 lim_at_start
= (char *) sbrk (0);
309 cmdarg
= (struct cmdarg
*) xmalloc (cmdsize
* sizeof (*cmdarg
));
312 dirarg
= (char **) xmalloc (dirsize
* sizeof (*dirarg
));
316 line
= (char *) xmalloc (linesize
);
317 line
[0] = '\0'; /* Terminate saved (now empty) cmd line */
320 gdb_stdout
= stdio_fileopen (stdout
);
321 gdb_stderr
= stdio_fileopen (stderr
);
322 gdb_stdlog
= gdb_stderr
; /* for moment */
323 gdb_stdtarg
= gdb_stderr
; /* for moment */
324 gdb_stdin
= stdio_fileopen (stdin
);
325 gdb_stdtargerr
= gdb_stderr
; /* for moment */
326 gdb_stdtargin
= gdb_stdin
; /* for moment */
328 gdb_program_name
= xstrdup (argv
[0]);
330 if (! getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
)))
331 /* Don't use *_filtered or warning() (which relies on
332 current_target) until after initialize_all_files(). */
333 fprintf_unfiltered (gdb_stderr
,
334 _("%s: warning: error finding working directory: %s\n"),
335 argv
[0], safe_strerror (errno
));
337 current_directory
= gdb_dirbuf
;
339 /* Set the sysroot path. */
340 gdb_sysroot
= relocate_directory (argv
[0], TARGET_SYSTEM_ROOT
,
341 TARGET_SYSTEM_ROOT_RELOCATABLE
);
343 debug_file_directory
= relocate_directory (argv
[0], DEBUGDIR
,
344 DEBUGDIR_RELOCATABLE
);
346 gdb_datadir
= relocate_directory (argv
[0], GDB_DATADIR
,
347 GDB_DATADIR_RELOCATABLE
);
350 add_substitute_path_rule (RELOC_SRCDIR
,
351 make_relative_prefix (argv
[0], BINDIR
,
355 /* There will always be an interpreter. Either the one passed into
356 this captured main, or one specified by the user at start up, or
357 the console. Initialize the interpreter to the one requested by
359 interpreter_p
= xstrdup (context
->interpreter_p
);
361 /* Parse arguments and options. */
364 /* When var field is 0, use flag field to record the equivalent
365 short option (or arbitrary numbers starting at 10 for those
366 with no equivalent). */
376 static struct option long_options
[] =
378 {"tui", no_argument
, 0, OPT_TUI
},
379 {"xdb", no_argument
, &xdb_commands
, 1},
380 {"dbx", no_argument
, &dbx_commands
, 1},
381 {"readnow", no_argument
, &readnow_symbol_files
, 1},
382 {"r", no_argument
, &readnow_symbol_files
, 1},
383 {"quiet", no_argument
, &quiet
, 1},
384 {"q", no_argument
, &quiet
, 1},
385 {"silent", no_argument
, &quiet
, 1},
386 {"nx", no_argument
, &inhibit_gdbinit
, 1},
387 {"n", no_argument
, &inhibit_gdbinit
, 1},
388 {"batch-silent", no_argument
, 0, 'B'},
389 {"batch", no_argument
, &batch
, 1},
390 {"epoch", no_argument
, &epoch_interface
, 1},
392 /* This is a synonym for "--annotate=1". --annotate is now preferred,
393 but keep this here for a long time because people will be running
394 emacses which use --fullname. */
395 {"fullname", no_argument
, 0, 'f'},
396 {"f", no_argument
, 0, 'f'},
398 {"annotate", required_argument
, 0, OPT_ANNOTATE
},
399 {"help", no_argument
, &print_help
, 1},
400 {"se", required_argument
, 0, OPT_SE
},
401 {"symbols", required_argument
, 0, 's'},
402 {"s", required_argument
, 0, 's'},
403 {"exec", required_argument
, 0, 'e'},
404 {"e", required_argument
, 0, 'e'},
405 {"core", required_argument
, 0, 'c'},
406 {"c", required_argument
, 0, 'c'},
407 {"pid", required_argument
, 0, 'p'},
408 {"p", required_argument
, 0, 'p'},
409 {"command", required_argument
, 0, 'x'},
410 {"eval-command", required_argument
, 0, 'X'},
411 {"version", no_argument
, &print_version
, 1},
412 {"x", required_argument
, 0, 'x'},
413 {"ex", required_argument
, 0, 'X'},
415 {"tclcommand", required_argument
, 0, 'z'},
416 {"enable-external-editor", no_argument
, 0, 'y'},
417 {"editor-command", required_argument
, 0, 'w'},
419 {"ui", required_argument
, 0, 'i'},
420 {"interpreter", required_argument
, 0, 'i'},
421 {"i", required_argument
, 0, 'i'},
422 {"directory", required_argument
, 0, 'd'},
423 {"d", required_argument
, 0, 'd'},
424 {"cd", required_argument
, 0, OPT_CD
},
425 {"tty", required_argument
, 0, 't'},
426 {"baud", required_argument
, 0, 'b'},
427 {"b", required_argument
, 0, 'b'},
428 {"nw", no_argument
, NULL
, OPT_NOWINDOWS
},
429 {"nowindows", no_argument
, NULL
, OPT_NOWINDOWS
},
430 {"w", no_argument
, NULL
, OPT_WINDOWS
},
431 {"windows", no_argument
, NULL
, OPT_WINDOWS
},
432 {"statistics", no_argument
, 0, OPT_STATISTICS
},
433 {"write", no_argument
, &write_files
, 1},
434 {"args", no_argument
, &set_args
, 1},
435 {"l", required_argument
, 0, 'l'},
436 {"return-child-result", no_argument
, &return_child_result
, 1},
437 {0, no_argument
, 0, 0}
444 c
= getopt_long_only (argc
, argv
, "",
445 long_options
, &option_index
);
446 if (c
== EOF
|| set_args
)
449 /* Long option that takes an argument. */
450 if (c
== 0 && long_options
[option_index
].flag
== 0)
451 c
= long_options
[option_index
].val
;
456 /* Long option that just sets a flag. */
466 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
467 annotation_level
= atoi (optarg
);
470 /* Enable the display of both time and space usage. */
475 /* --tui is equivalent to -i=tui. */
477 xfree (interpreter_p
);
478 interpreter_p
= xstrdup (INTERP_TUI
);
480 fprintf_unfiltered (gdb_stderr
,
481 _("%s: TUI mode is not supported\n"),
487 /* FIXME: cagney/2003-03-01: Not sure if this option is
488 actually useful, and if it is, what it should do. */
490 /* --windows is equivalent to -i=insight. */
491 xfree (interpreter_p
);
492 interpreter_p
= xstrdup (INTERP_INSIGHT
);
497 /* -nw is equivalent to -i=console. */
498 xfree (interpreter_p
);
499 interpreter_p
= xstrdup (INTERP_CONSOLE
);
503 annotation_level
= 1;
504 /* We have probably been invoked from emacs. Disable window interface. */
520 cmdarg
[ncmd
].type
= CMDARG_FILE
;
521 cmdarg
[ncmd
++].string
= optarg
;
525 cmdarg
= xrealloc ((char *) cmdarg
,
526 cmdsize
* sizeof (*cmdarg
));
530 cmdarg
[ncmd
].type
= CMDARG_COMMAND
;
531 cmdarg
[ncmd
++].string
= optarg
;
535 cmdarg
= xrealloc ((char *) cmdarg
,
536 cmdsize
* sizeof (*cmdarg
));
540 batch
= batch_silent
= 1;
541 gdb_stdout
= ui_file_new();
546 extern int gdbtk_test (char *);
547 if (!gdbtk_test (optarg
))
549 fprintf_unfiltered (gdb_stderr
, _("%s: unable to load tclcommand file \"%s\""),
556 /* Backwards compatibility only. */
560 external_editor_command
= xstrdup (optarg
);
565 xfree (interpreter_p
);
566 interpreter_p
= xstrdup (optarg
);
569 dirarg
[ndir
++] = optarg
;
573 dirarg
= (char **) xrealloc ((char *) dirarg
,
574 dirsize
* sizeof (*dirarg
));
588 i
= strtol (optarg
, &p
, 0);
589 if (i
== 0 && p
== optarg
)
591 /* Don't use *_filtered or warning() (which relies on
592 current_target) until after initialize_all_files(). */
596 _("warning: could not set baud rate to `%s'.\n"), optarg
);
606 i
= strtol (optarg
, &p
, 0);
607 if (i
== 0 && p
== optarg
)
609 /* Don't use *_filtered or warning() (which relies on
610 current_target) until after initialize_all_files(). */
614 _("warning: could not set timeout limit to `%s'.\n"), optarg
);
621 fprintf_unfiltered (gdb_stderr
,
622 _("Use `%s --help' for a complete list of options.\n"),
628 /* If --help or --version, disable window interface. */
629 if (print_help
|| print_version
)
638 /* Initialize all files. Give the interpreter a chance to take
639 control of the console via the deprecated_init_ui_hook (). */
642 /* Now that gdb_init has created the initial inferior, we're in position
643 to set args for that inferior. */
646 /* The remaining options are the command-line options for the
647 inferior. The first one is the sym/exec file, and the rest
651 fprintf_unfiltered (gdb_stderr
,
652 _("%s: `--args' specified but no program specified\n"),
656 symarg
= argv
[optind
];
657 execarg
= argv
[optind
];
659 set_inferior_args_vector (argc
- optind
, &argv
[optind
]);
663 /* OK, that's all the options. */
665 /* The first argument, if specified, is the name of the
669 symarg
= argv
[optind
];
670 execarg
= argv
[optind
];
674 /* If the user hasn't already specified a PID or the name of a
675 core file, then a second optional argument is allowed. If
676 present, this argument should be interpreted as either a
677 PID or a core file, whichever works. */
678 if (pidarg
== NULL
&& corearg
== NULL
&& optind
< argc
)
680 pid_or_core_arg
= argv
[optind
];
684 /* Any argument left on the command line is unexpected and
685 will be ignored. Inform the user. */
687 fprintf_unfiltered (gdb_stderr
, _("\
688 Excess command line arguments ignored. (%s%s)\n"),
690 (optind
== argc
- 1) ? "" : " ...");
693 /* Lookup gdbinit files. Note that the gdbinit file name may be overriden
694 during file initialization, so get_init_files should be called after
696 get_init_files (&system_gdbinit
, &home_gdbinit
, &local_gdbinit
);
698 /* Do these (and anything which might call wrap_here or *_filtered)
699 after initialize_all_files() but before the interpreter has been
700 installed. Otherwize the help/version messages will be eaten by
701 the interpreter's output handler. */
705 print_gdb_version (gdb_stdout
);
707 printf_filtered ("\n");
713 print_gdb_help (gdb_stdout
);
714 fputs_unfiltered ("\n", gdb_stdout
);
718 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
719 GDB retain the old MI1 interpreter startup behavior. Output the
720 copyright message before the interpreter is installed. That way
721 it isn't encapsulated in MI output. */
722 if (!quiet
&& strcmp (interpreter_p
, INTERP_MI1
) == 0)
724 /* Print all the junk at the top, with trailing "..." if we are about
725 to read a symbol file (possibly slowly). */
726 print_gdb_version (gdb_stdout
);
728 printf_filtered ("..");
730 printf_filtered ("\n");
731 gdb_flush (gdb_stdout
); /* Force to screen during slow operations */
735 /* Install the default UI. All the interpreters should have had a
736 look at things by now. Initialize the default interpreter. */
740 struct interp
*interp
= interp_lookup (interpreter_p
);
742 error (_("Interpreter `%s' unrecognized"), interpreter_p
);
744 if (!interp_set (interp
, 1))
746 fprintf_unfiltered (gdb_stderr
,
747 "Interpreter `%s' failed to initialize.\n",
753 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
754 GDB retain the old MI1 interpreter startup behavior. Output the
755 copyright message after the interpreter is installed when it is
756 any sane interpreter. */
757 if (!quiet
&& !current_interp_named_p (INTERP_MI1
))
759 /* Print all the junk at the top, with trailing "..." if we are about
760 to read a symbol file (possibly slowly). */
761 print_gdb_version (gdb_stdout
);
763 printf_filtered ("..");
765 printf_filtered ("\n");
766 gdb_flush (gdb_stdout
); /* Force to screen during slow operations */
769 /* Set off error and warning messages with a blank line. */
770 error_pre_print
= "\n";
771 quit_pre_print
= error_pre_print
;
772 warning_pre_print
= _("\nwarning: ");
774 /* Read and execute the system-wide gdbinit file, if it exists.
775 This is done *before* all the command line arguments are
776 processed; it sets global parameters, which are independent of
777 what file you are debugging or what directory you are in. */
778 if (system_gdbinit
&& !inhibit_gdbinit
)
779 catch_command_errors (source_script
, system_gdbinit
, 0, RETURN_MASK_ALL
);
781 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
782 *before* all the command line arguments are processed; it sets
783 global parameters, which are independent of what file you are
784 debugging or what directory you are in. */
786 if (home_gdbinit
&& !inhibit_gdbinit
)
787 catch_command_errors (source_script
, home_gdbinit
, 0, RETURN_MASK_ALL
);
789 /* Now perform all the actions indicated by the arguments. */
792 catch_command_errors (cd_command
, cdarg
, 0, RETURN_MASK_ALL
);
795 for (i
= 0; i
< ndir
; i
++)
796 catch_command_errors (directory_switch
, dirarg
[i
], 0, RETURN_MASK_ALL
);
801 && strcmp (execarg
, symarg
) == 0)
803 /* The exec file and the symbol-file are the same. If we can't
804 open it, better only print one error message.
805 catch_command_errors returns non-zero on success! */
806 if (catch_command_errors (exec_file_attach
, execarg
, !batch
, RETURN_MASK_ALL
))
807 catch_command_errors (symbol_file_add_main
, symarg
, !batch
, RETURN_MASK_ALL
);
812 catch_command_errors (exec_file_attach
, execarg
, !batch
, RETURN_MASK_ALL
);
814 catch_command_errors (symbol_file_add_main
, symarg
, !batch
, RETURN_MASK_ALL
);
817 if (corearg
&& pidarg
)
819 Can't attach to process and specify a core file at the same time."));
822 catch_command_errors (core_file_command
, corearg
,
823 !batch
, RETURN_MASK_ALL
);
824 else if (pidarg
!= NULL
)
825 catch_command_errors (attach_command
, pidarg
,
826 !batch
, RETURN_MASK_ALL
);
827 else if (pid_or_core_arg
)
829 /* The user specified 'gdb program pid' or gdb program core'.
830 If pid_or_core_arg's first character is a digit, try attach
831 first and then corefile. Otherwise try just corefile. */
833 if (isdigit (pid_or_core_arg
[0]))
835 if (catch_command_errors (attach_command
, pid_or_core_arg
,
836 !batch
, RETURN_MASK_ALL
) == 0)
837 catch_command_errors (core_file_command
, pid_or_core_arg
,
838 !batch
, RETURN_MASK_ALL
);
840 else /* Can't be a pid, better be a corefile. */
841 catch_command_errors (core_file_command
, pid_or_core_arg
,
842 !batch
, RETURN_MASK_ALL
);
846 set_inferior_io_terminal (ttyarg
);
848 /* Error messages should no longer be distinguished with extra output. */
849 error_pre_print
= NULL
;
850 quit_pre_print
= NULL
;
851 warning_pre_print
= _("warning: ");
853 /* Read the .gdbinit file in the current directory, *if* it isn't
854 the same as the $HOME/.gdbinit file (it should exist, also). */
855 if (local_gdbinit
&& !inhibit_gdbinit
)
856 catch_command_errors (source_script
, local_gdbinit
, 0, RETURN_MASK_ALL
);
858 for (i
= 0; i
< ncmd
; i
++)
860 if (cmdarg
[i
].type
== CMDARG_FILE
)
861 catch_command_errors (source_script
, cmdarg
[i
].string
,
862 !batch
, RETURN_MASK_ALL
);
863 else /* cmdarg[i].type == CMDARG_COMMAND */
864 catch_command_errors (execute_command
, cmdarg
[i
].string
,
865 !batch
, RETURN_MASK_ALL
);
869 /* Read in the old history after all the command files have been read. */
874 /* We have hit the end of the batch file. */
875 quit_force (NULL
, 0);
878 /* Show time and/or space usage. */
882 long init_time
= get_run_time () - time_at_startup
;
884 printf_unfiltered (_("Startup time: %ld.%06ld\n"),
885 init_time
/ 1000000, init_time
% 1000000);
891 extern char **environ
;
892 char *lim
= (char *) sbrk (0);
894 printf_unfiltered (_("Startup size: data size %ld\n"),
895 (long) (lim
- (char *) &environ
));
899 /* NOTE: cagney/1999-11-07: There is probably no reason for not
900 moving this loop and the code found in captured_command_loop()
901 into the command_loop() proper. The main thing holding back that
902 change - SET_TOP_LEVEL() - has been eliminated. */
905 catch_errors (captured_command_loop
, 0, "", RETURN_MASK_ALL
);
907 /* No exit -- exit is through quit_command. */
911 gdb_main (struct captured_main_args
*args
)
913 use_windows
= args
->use_windows
;
914 catch_errors (captured_main
, args
, "", RETURN_MASK_ALL
);
915 /* The only way to end up here is by an error (normal exit is
916 handled by quit_force()), hence always return an error status. */
921 /* Don't use *_filtered for printing help. We don't want to prompt
922 for continue no matter how small the screen or how much we're going
926 print_gdb_help (struct ui_file
*stream
)
928 char *system_gdbinit
;
932 get_init_files (&system_gdbinit
, &home_gdbinit
, &local_gdbinit
);
934 fputs_unfiltered (_("\
935 This is the GNU debugger. Usage:\n\n\
936 gdb [options] [executable-file [core-file or process-id]]\n\
937 gdb [options] --args executable-file [inferior-arguments ...]\n\n\
940 fputs_unfiltered (_("\
941 --args Arguments after executable-file are passed to inferior\n\
943 fputs_unfiltered (_("\
944 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
945 --batch Exit after processing options.\n\
946 --batch-silent As for --batch, but suppress all gdb stdout output.\n\
947 --return-child-result\n\
948 GDB exit code will be the child's exit code.\n\
949 --cd=DIR Change current directory to DIR.\n\
950 --command=FILE, -x Execute GDB commands from FILE.\n\
951 --eval-command=COMMAND, -ex\n\
952 Execute a single GDB command.\n\
953 May be used multiple times and in conjunction\n\
955 --core=COREFILE Analyze the core dump COREFILE.\n\
956 --pid=PID Attach to running process PID.\n\
958 fputs_unfiltered (_("\
959 --dbx DBX compatibility mode.\n\
960 --directory=DIR Search for source files in DIR.\n\
961 --epoch Output information used by epoch emacs-GDB interface.\n\
962 --exec=EXECFILE Use EXECFILE as the executable.\n\
963 --fullname Output information used by emacs-GDB interface.\n\
964 --help Print this message.\n\
966 fputs_unfiltered (_("\
967 --interpreter=INTERP\n\
968 Select a specific interpreter / user interface\n\
970 fputs_unfiltered (_("\
971 -l TIMEOUT Set timeout in seconds for remote debugging.\n\
972 --nw Do not use a window interface.\n\
973 --nx Do not read "), stream
);
974 fputs_unfiltered (gdbinit
, stream
);
975 fputs_unfiltered (_(" file.\n\
976 --quiet Do not print version number on startup.\n\
977 --readnow Fully read symbol files on first access.\n\
979 fputs_unfiltered (_("\
980 --se=FILE Use FILE as symbol file and executable file.\n\
981 --symbols=SYMFILE Read symbols from SYMFILE.\n\
982 --tty=TTY Use TTY for input/output by the program being debugged.\n\
985 fputs_unfiltered (_("\
986 --tui Use a terminal user interface.\n\
989 fputs_unfiltered (_("\
990 --version Print version information and then exit.\n\
991 -w Use a window interface.\n\
992 --write Set writing into executable and core files.\n\
993 --xdb XDB compatibility mode.\n\
995 fputs_unfiltered (_("\n\
996 At startup, GDB reads the following init files and executes their commands:\n\
999 fprintf_unfiltered (stream
, _("\
1000 * system-wide init file: %s\n\
1001 "), system_gdbinit
);
1003 fprintf_unfiltered (stream
, _("\
1004 * user-specific init file: %s\n\
1007 fprintf_unfiltered (stream
, _("\
1008 * local init file: ./%s\n\
1010 fputs_unfiltered (_("\n\
1011 For more information, type \"help\" from within GDB, or consult the\n\
1012 GDB manual (available as on-line info or a printed manual).\n\
1014 if (REPORT_BUGS_TO
[0] && stream
== gdb_stdout
)
1015 fprintf_unfiltered (stream
, _("\
1016 Report bugs to \"%s\".\n\
1017 "), REPORT_BUGS_TO
);