1 /* Top level stuff for GDB, the GNU debugger.
3 Copyright (C) 1986-2005, 2007-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
27 #include "exceptions.h"
30 #include <sys/types.h>
34 #include "gdb_string.h"
35 #include "event-loop.h"
41 #include "cli/cli-cmds.h"
42 #include "python/python.h"
45 /* The selected interpreter. This will be used as a set command
46 variable, so it should always be malloc'ed - since
47 do_setshow_command will free it. */
50 /* Whether xdb commands will be handled. */
53 /* Whether dbx commands will be handled. */
56 /* System root path, used to find libraries etc. */
57 char *gdb_sysroot
= 0;
59 /* GDB datadir, used to store data files. */
60 char *gdb_datadir
= 0;
62 /* If gdb was configured with --with-python=/path,
63 the possibly relocated path to python's lib directory. */
64 char *python_libdir
= 0;
66 struct ui_file
*gdb_stdout
;
67 struct ui_file
*gdb_stderr
;
68 struct ui_file
*gdb_stdlog
;
69 struct ui_file
*gdb_stdin
;
70 /* Target IO streams. */
71 struct ui_file
*gdb_stdtargin
;
72 struct ui_file
*gdb_stdtarg
;
73 struct ui_file
*gdb_stdtargerr
;
75 /* True if --batch or --batch-silent was seen. */
78 /* Support for the --batch-silent option. */
81 /* Support for --return-child-result option.
82 Set the default to -1 to return error in the case
83 that the program does not run or does not complete. */
84 int return_child_result
= 0;
85 int return_child_result_value
= -1;
88 /* GDB as it has been invoked from the command line (i.e. argv[0]). */
89 static char *gdb_program_name
;
91 static void print_gdb_help (struct ui_file
*);
93 /* Relocate a file or directory. PROGNAME is the name by which gdb
94 was invoked (i.e., argv[0]). INITIAL is the default value for the
95 file or directory. FLAG is true if the value is relocatable, false
96 otherwise. Returns a newly allocated string; this may return NULL
97 under the same conditions as make_relative_prefix. */
100 relocate_path (const char *progname
, const char *initial
, int flag
)
103 return make_relative_prefix (progname
, BINDIR
, initial
);
104 return xstrdup (initial
);
107 /* Like relocate_path, but specifically checks for a directory.
108 INITIAL is relocated according to the rules of relocate_path. If
109 the result is a directory, it is used; otherwise, INITIAL is used.
110 The chosen directory is then canonicalized using lrealpath. This
111 function always returns a newly-allocated string. */
114 relocate_gdb_directory (const char *initial
, int flag
)
118 dir
= relocate_path (gdb_program_name
, initial
, flag
);
123 if (stat (dir
, &s
) != 0 || !S_ISDIR (s
.st_mode
))
130 dir
= xstrdup (initial
);
132 /* Canonicalize the directory. */
135 char *canon_sysroot
= lrealpath (dir
);
147 /* Compute the locations of init files that GDB should source and
148 return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If
149 there is no system gdbinit (resp. home gdbinit and local gdbinit)
150 to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
151 LOCAL_GDBINIT) is set to NULL. */
153 get_init_files (char **system_gdbinit
,
155 char **local_gdbinit
)
157 static char *sysgdbinit
= NULL
;
158 static char *homeinit
= NULL
;
159 static char *localinit
= NULL
;
160 static int initialized
= 0;
164 struct stat homebuf
, cwdbuf
, s
;
165 char *homedir
, *relocated_sysgdbinit
;
167 if (SYSTEM_GDBINIT
[0])
169 relocated_sysgdbinit
= relocate_path (gdb_program_name
,
171 SYSTEM_GDBINIT_RELOCATABLE
);
172 if (relocated_sysgdbinit
&& stat (relocated_sysgdbinit
, &s
) == 0)
173 sysgdbinit
= relocated_sysgdbinit
;
175 xfree (relocated_sysgdbinit
);
178 homedir
= getenv ("HOME");
180 /* If the .gdbinit file in the current directory is the same as
181 the $HOME/.gdbinit file, it should not be sourced. homebuf
182 and cwdbuf are used in that purpose. Make sure that the stats
183 are zero in case one of them fails (this guarantees that they
184 won't match if either exists). */
186 memset (&homebuf
, 0, sizeof (struct stat
));
187 memset (&cwdbuf
, 0, sizeof (struct stat
));
191 homeinit
= xstrprintf ("%s/%s", homedir
, gdbinit
);
192 if (stat (homeinit
, &homebuf
) != 0)
199 if (stat (gdbinit
, &cwdbuf
) == 0)
202 || memcmp ((char *) &homebuf
, (char *) &cwdbuf
,
203 sizeof (struct stat
)))
210 *system_gdbinit
= sysgdbinit
;
211 *home_gdbinit
= homeinit
;
212 *local_gdbinit
= localinit
;
215 /* Call command_loop. If it happens to return, pass that through as a
216 non-zero return status. */
219 captured_command_loop (void *data
)
221 /* Top-level execution commands can be run on the background from
223 interpreter_async
= 1;
225 current_interp_command_loop ();
226 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
227 would clean things up (restoring the cleanup chain) to the state
228 they were just prior to the call. Technically, this means that
229 the do_cleanups() below is redundant. Unfortunately, many FUNCs
230 are not that well behaved. do_cleanups should either be replaced
231 with a do_cleanups call (to cover the problem) or an assertion
232 check to detect bad FUNCs code. */
233 do_cleanups (ALL_CLEANUPS
);
234 /* If the command_loop returned, normally (rather than threw an
235 error) we try to quit. If the quit is aborted, catch_errors()
236 which called this catch the signal and restart the command
238 quit_command (NULL
, instream
== stdin
);
242 /* Arguments of --command option and its counterpart. */
243 typedef struct cmdarg
{
244 /* Type of this option. */
246 /* Option type -x. */
249 /* Option type -ex. */
252 /* Option type -ix. */
255 /* Option type -iex. */
259 /* Value of this option - filename or the GDB command itself. String memory
260 is not owned by this structure despite it is 'const'. */
264 /* Define type VEC (cmdarg_s). */
265 DEF_VEC_O (cmdarg_s
);
268 captured_main (void *data
)
270 struct captured_main_args
*context
= data
;
271 int argc
= context
->argc
;
272 char **argv
= context
->argv
;
273 static int quiet
= 0;
274 static int set_args
= 0;
276 /* Pointers to various arguments from command line. */
278 char *execarg
= NULL
;
280 char *corearg
= NULL
;
281 char *pid_or_core_arg
= NULL
;
285 /* These are static so that we can take their address in an
287 static int print_help
;
288 static int print_version
;
290 /* Pointers to all arguments of --command option. */
291 VEC (cmdarg_s
) *cmdarg_vec
= NULL
;
292 struct cmdarg
*cmdarg_p
;
294 /* Indices of all arguments of --directory option. */
296 /* Allocated size. */
298 /* Number of elements used. */
301 /* gdb init files. */
302 char *system_gdbinit
;
308 struct objfile
*objfile
;
310 struct cleanup
*pre_stat_chain
;
313 /* Set this before calling make_command_stats_cleanup. */
314 lim_at_start
= (char *) sbrk (0);
317 pre_stat_chain
= make_command_stats_cleanup (0);
319 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
320 setlocale (LC_MESSAGES
, "");
322 #if defined (HAVE_SETLOCALE)
323 setlocale (LC_CTYPE
, "");
325 bindtextdomain (PACKAGE
, LOCALEDIR
);
326 textdomain (PACKAGE
);
328 make_cleanup (VEC_cleanup (cmdarg_s
), &cmdarg_vec
);
330 dirarg
= (char **) xmalloc (dirsize
* sizeof (*dirarg
));
334 saved_command_line
= (char *) xmalloc (saved_command_line_size
);
335 saved_command_line
[0] = '\0';
338 gdb_stdout
= stdio_fileopen (stdout
);
339 gdb_stderr
= stdio_fileopen (stderr
);
340 gdb_stdlog
= gdb_stderr
; /* for moment */
341 gdb_stdtarg
= gdb_stderr
; /* for moment */
342 gdb_stdin
= stdio_fileopen (stdin
);
343 gdb_stdtargerr
= gdb_stderr
; /* for moment */
344 gdb_stdtargin
= gdb_stdin
; /* for moment */
346 gdb_program_name
= xstrdup (argv
[0]);
348 if (! getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
)))
349 /* Don't use *_filtered or warning() (which relies on
350 current_target) until after initialize_all_files(). */
351 fprintf_unfiltered (gdb_stderr
,
352 _("%s: warning: error finding "
353 "working directory: %s\n"),
354 argv
[0], safe_strerror (errno
));
356 current_directory
= gdb_dirbuf
;
358 /* Set the sysroot path. */
359 gdb_sysroot
= relocate_gdb_directory (TARGET_SYSTEM_ROOT
,
360 TARGET_SYSTEM_ROOT_RELOCATABLE
);
362 debug_file_directory
= relocate_gdb_directory (DEBUGDIR
,
363 DEBUGDIR_RELOCATABLE
);
365 gdb_datadir
= relocate_gdb_directory (GDB_DATADIR
,
366 GDB_DATADIR_RELOCATABLE
);
368 #ifdef WITH_PYTHON_PATH
370 /* For later use in helping Python find itself. */
371 char *tmp
= concat (WITH_PYTHON_PATH
, SLASH_STRING
, "lib", NULL
);
373 python_libdir
= relocate_gdb_directory (tmp
, PYTHON_PATH_RELOCATABLE
);
379 add_substitute_path_rule (RELOC_SRCDIR
,
380 make_relative_prefix (argv
[0], BINDIR
,
384 /* There will always be an interpreter. Either the one passed into
385 this captured main, or one specified by the user at start up, or
386 the console. Initialize the interpreter to the one requested by
388 interpreter_p
= xstrdup (context
->interpreter_p
);
390 /* Parse arguments and options. */
393 /* When var field is 0, use flag field to record the equivalent
394 short option (or arbitrary numbers starting at 10 for those
395 with no equivalent). */
407 static struct option long_options
[] =
409 {"tui", no_argument
, 0, OPT_TUI
},
410 {"xdb", no_argument
, &xdb_commands
, 1},
411 {"dbx", no_argument
, &dbx_commands
, 1},
412 {"readnow", no_argument
, &readnow_symbol_files
, 1},
413 {"r", no_argument
, &readnow_symbol_files
, 1},
414 {"quiet", no_argument
, &quiet
, 1},
415 {"q", no_argument
, &quiet
, 1},
416 {"silent", no_argument
, &quiet
, 1},
417 {"nx", no_argument
, &inhibit_gdbinit
, 1},
418 {"n", no_argument
, &inhibit_gdbinit
, 1},
419 {"batch-silent", no_argument
, 0, 'B'},
420 {"batch", no_argument
, &batch_flag
, 1},
421 {"epoch", no_argument
, &epoch_interface
, 1},
423 /* This is a synonym for "--annotate=1". --annotate is now
424 preferred, but keep this here for a long time because people
425 will be running emacses which use --fullname. */
426 {"fullname", no_argument
, 0, 'f'},
427 {"f", no_argument
, 0, 'f'},
429 {"annotate", required_argument
, 0, OPT_ANNOTATE
},
430 {"help", no_argument
, &print_help
, 1},
431 {"se", required_argument
, 0, OPT_SE
},
432 {"symbols", required_argument
, 0, 's'},
433 {"s", required_argument
, 0, 's'},
434 {"exec", required_argument
, 0, 'e'},
435 {"e", required_argument
, 0, 'e'},
436 {"core", required_argument
, 0, 'c'},
437 {"c", required_argument
, 0, 'c'},
438 {"pid", required_argument
, 0, 'p'},
439 {"p", required_argument
, 0, 'p'},
440 {"command", required_argument
, 0, 'x'},
441 {"eval-command", required_argument
, 0, 'X'},
442 {"version", no_argument
, &print_version
, 1},
443 {"x", required_argument
, 0, 'x'},
444 {"ex", required_argument
, 0, 'X'},
445 {"init-command", required_argument
, 0, OPT_IX
},
446 {"init-eval-command", required_argument
, 0, OPT_IEX
},
447 {"ix", required_argument
, 0, OPT_IX
},
448 {"iex", required_argument
, 0, OPT_IEX
},
450 {"tclcommand", required_argument
, 0, 'z'},
451 {"enable-external-editor", no_argument
, 0, 'y'},
452 {"editor-command", required_argument
, 0, 'w'},
454 {"ui", required_argument
, 0, 'i'},
455 {"interpreter", required_argument
, 0, 'i'},
456 {"i", required_argument
, 0, 'i'},
457 {"directory", required_argument
, 0, 'd'},
458 {"d", required_argument
, 0, 'd'},
459 {"data-directory", required_argument
, 0, 'D'},
460 {"cd", required_argument
, 0, OPT_CD
},
461 {"tty", required_argument
, 0, 't'},
462 {"baud", required_argument
, 0, 'b'},
463 {"b", required_argument
, 0, 'b'},
464 {"nw", no_argument
, NULL
, OPT_NOWINDOWS
},
465 {"nowindows", no_argument
, NULL
, OPT_NOWINDOWS
},
466 {"w", no_argument
, NULL
, OPT_WINDOWS
},
467 {"windows", no_argument
, NULL
, OPT_WINDOWS
},
468 {"statistics", no_argument
, 0, OPT_STATISTICS
},
469 {"write", no_argument
, &write_files
, 1},
470 {"args", no_argument
, &set_args
, 1},
471 {"l", required_argument
, 0, 'l'},
472 {"return-child-result", no_argument
, &return_child_result
, 1},
473 {"use-deprecated-index-sections", no_argument
,
474 &use_deprecated_index_sections
, 1},
475 {0, no_argument
, 0, 0}
482 c
= getopt_long_only (argc
, argv
, "",
483 long_options
, &option_index
);
484 if (c
== EOF
|| set_args
)
487 /* Long option that takes an argument. */
488 if (c
== 0 && long_options
[option_index
].flag
== 0)
489 c
= long_options
[option_index
].val
;
494 /* Long option that just sets a flag. */
504 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
505 annotation_level
= atoi (optarg
);
508 /* Enable the display of both time and space usage. */
509 set_display_time (1);
510 set_display_space (1);
513 /* --tui is equivalent to -i=tui. */
515 xfree (interpreter_p
);
516 interpreter_p
= xstrdup (INTERP_TUI
);
518 fprintf_unfiltered (gdb_stderr
,
519 _("%s: TUI mode is not supported\n"),
525 /* FIXME: cagney/2003-03-01: Not sure if this option is
526 actually useful, and if it is, what it should do. */
528 /* --windows is equivalent to -i=insight. */
529 xfree (interpreter_p
);
530 interpreter_p
= xstrdup (INTERP_INSIGHT
);
535 /* -nw is equivalent to -i=console. */
536 xfree (interpreter_p
);
537 interpreter_p
= xstrdup (INTERP_CONSOLE
);
541 annotation_level
= 1;
542 /* We have probably been invoked from emacs. Disable
560 struct cmdarg cmdarg
= { CMDARG_FILE
, optarg
};
562 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
567 struct cmdarg cmdarg
= { CMDARG_COMMAND
, optarg
};
569 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
574 struct cmdarg cmdarg
= { CMDARG_INIT_FILE
, optarg
};
576 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
581 struct cmdarg cmdarg
= { CMDARG_INIT_COMMAND
, optarg
};
583 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
587 batch_flag
= batch_silent
= 1;
588 gdb_stdout
= ui_file_new();
592 gdb_datadir
= xstrdup (optarg
);
597 extern int gdbtk_test (char *);
599 if (!gdbtk_test (optarg
))
601 fprintf_unfiltered (gdb_stderr
,
602 _("%s: unable to load "
603 "tclcommand file \"%s\""),
610 /* Backwards compatibility only. */
614 /* Set the external editor commands when gdb is farming out files
615 to be edited by another program. */
616 extern char *external_editor_command
;
618 external_editor_command
= xstrdup (optarg
);
623 xfree (interpreter_p
);
624 interpreter_p
= xstrdup (optarg
);
627 dirarg
[ndir
++] = optarg
;
631 dirarg
= (char **) xrealloc ((char *) dirarg
,
632 dirsize
* sizeof (*dirarg
));
646 i
= strtol (optarg
, &p
, 0);
647 if (i
== 0 && p
== optarg
)
649 /* Don't use *_filtered or warning() (which relies on
650 current_target) until after initialize_all_files(). */
654 _("warning: could not set baud rate to `%s'.\n"), optarg
);
664 i
= strtol (optarg
, &p
, 0);
665 if (i
== 0 && p
== optarg
)
667 /* Don't use *_filtered or warning() (which relies on
668 current_target) until after initialize_all_files(). */
670 fprintf_unfiltered (gdb_stderr
,
671 _("warning: could not set "
672 "timeout limit to `%s'.\n"), optarg
);
679 fprintf_unfiltered (gdb_stderr
,
680 _("Use `%s --help' for a "
681 "complete list of options.\n"),
687 /* If --help or --version, disable window interface. */
688 if (print_help
|| print_version
)
697 /* Initialize all files. Give the interpreter a chance to take
698 control of the console via the deprecated_init_ui_hook (). */
701 /* Now that gdb_init has created the initial inferior, we're in
702 position to set args for that inferior. */
705 /* The remaining options are the command-line options for the
706 inferior. The first one is the sym/exec file, and the rest
710 fprintf_unfiltered (gdb_stderr
,
711 _("%s: `--args' specified but "
712 "no program specified\n"),
716 symarg
= argv
[optind
];
717 execarg
= argv
[optind
];
719 set_inferior_args_vector (argc
- optind
, &argv
[optind
]);
723 /* OK, that's all the options. */
725 /* The first argument, if specified, is the name of the
729 symarg
= argv
[optind
];
730 execarg
= argv
[optind
];
734 /* If the user hasn't already specified a PID or the name of a
735 core file, then a second optional argument is allowed. If
736 present, this argument should be interpreted as either a
737 PID or a core file, whichever works. */
738 if (pidarg
== NULL
&& corearg
== NULL
&& optind
< argc
)
740 pid_or_core_arg
= argv
[optind
];
744 /* Any argument left on the command line is unexpected and
745 will be ignored. Inform the user. */
747 fprintf_unfiltered (gdb_stderr
,
748 _("Excess command line "
749 "arguments ignored. (%s%s)\n"),
751 (optind
== argc
- 1) ? "" : " ...");
754 /* Lookup gdbinit files. Note that the gdbinit file name may be
755 overriden during file initialization, so get_init_files should be
756 called after gdb_init. */
757 get_init_files (&system_gdbinit
, &home_gdbinit
, &local_gdbinit
);
759 /* Do these (and anything which might call wrap_here or *_filtered)
760 after initialize_all_files() but before the interpreter has been
761 installed. Otherwize the help/version messages will be eaten by
762 the interpreter's output handler. */
766 print_gdb_version (gdb_stdout
);
768 printf_filtered ("\n");
774 print_gdb_help (gdb_stdout
);
775 fputs_unfiltered ("\n", gdb_stdout
);
779 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
780 GDB retain the old MI1 interpreter startup behavior. Output the
781 copyright message before the interpreter is installed. That way
782 it isn't encapsulated in MI output. */
783 if (!quiet
&& strcmp (interpreter_p
, INTERP_MI1
) == 0)
785 /* Print all the junk at the top, with trailing "..." if we are
786 about to read a symbol file (possibly slowly). */
787 print_gdb_version (gdb_stdout
);
789 printf_filtered ("..");
791 printf_filtered ("\n");
792 gdb_flush (gdb_stdout
); /* Force to screen during slow
796 /* Install the default UI. All the interpreters should have had a
797 look at things by now. Initialize the default interpreter. */
801 struct interp
*interp
= interp_lookup (interpreter_p
);
804 error (_("Interpreter `%s' unrecognized"), interpreter_p
);
806 if (!interp_set (interp
, 1))
808 fprintf_unfiltered (gdb_stderr
,
809 "Interpreter `%s' failed to initialize.\n",
815 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
816 GDB retain the old MI1 interpreter startup behavior. Output the
817 copyright message after the interpreter is installed when it is
818 any sane interpreter. */
819 if (!quiet
&& !current_interp_named_p (INTERP_MI1
))
821 /* Print all the junk at the top, with trailing "..." if we are
822 about to read a symbol file (possibly slowly). */
823 print_gdb_version (gdb_stdout
);
825 printf_filtered ("..");
827 printf_filtered ("\n");
828 gdb_flush (gdb_stdout
); /* Force to screen during slow
832 /* Set off error and warning messages with a blank line. */
833 error_pre_print
= "\n";
834 quit_pre_print
= error_pre_print
;
835 warning_pre_print
= _("\nwarning: ");
837 /* Process '-ix' and '-iex' options early. */
838 for (i
= 0; VEC_iterate (cmdarg_s
, cmdarg_vec
, i
, cmdarg_p
); i
++)
839 switch (cmdarg_p
->type
)
841 case CMDARG_INIT_FILE
:
842 catch_command_errors (source_script
, cmdarg_p
->string
,
843 !batch_flag
, RETURN_MASK_ALL
);
845 case CMDARG_INIT_COMMAND
:
846 catch_command_errors (execute_command
, cmdarg_p
->string
,
847 !batch_flag
, RETURN_MASK_ALL
);
851 /* Read and execute the system-wide gdbinit file, if it exists.
852 This is done *before* all the command line arguments are
853 processed; it sets global parameters, which are independent of
854 what file you are debugging or what directory you are in. */
855 if (system_gdbinit
&& !inhibit_gdbinit
)
856 catch_command_errors (source_script
, system_gdbinit
, 0, RETURN_MASK_ALL
);
858 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
859 *before* all the command line arguments are processed; it sets
860 global parameters, which are independent of what file you are
861 debugging or what directory you are in. */
863 if (home_gdbinit
&& !inhibit_gdbinit
)
864 catch_command_errors (source_script
, home_gdbinit
, 0, RETURN_MASK_ALL
);
866 /* Now perform all the actions indicated by the arguments. */
869 catch_command_errors (cd_command
, cdarg
, 0, RETURN_MASK_ALL
);
872 for (i
= 0; i
< ndir
; i
++)
873 catch_command_errors (directory_switch
, dirarg
[i
], 0, RETURN_MASK_ALL
);
876 /* Skip auto-loading section-specified scripts until we've sourced
877 local_gdbinit (which is often used to augment the source search
879 save_auto_load
= gdbpy_global_auto_load
;
880 gdbpy_global_auto_load
= 0;
884 && strcmp (execarg
, symarg
) == 0)
886 /* The exec file and the symbol-file are the same. If we can't
887 open it, better only print one error message.
888 catch_command_errors returns non-zero on success! */
889 if (catch_command_errors (exec_file_attach
, execarg
,
890 !batch_flag
, RETURN_MASK_ALL
))
891 catch_command_errors (symbol_file_add_main
, symarg
,
892 !batch_flag
, RETURN_MASK_ALL
);
897 catch_command_errors (exec_file_attach
, execarg
,
898 !batch_flag
, RETURN_MASK_ALL
);
900 catch_command_errors (symbol_file_add_main
, symarg
,
901 !batch_flag
, RETURN_MASK_ALL
);
904 if (corearg
&& pidarg
)
905 error (_("Can't attach to process and specify "
906 "a core file at the same time."));
909 catch_command_errors (core_file_command
, corearg
,
910 !batch_flag
, RETURN_MASK_ALL
);
911 else if (pidarg
!= NULL
)
912 catch_command_errors (attach_command
, pidarg
,
913 !batch_flag
, RETURN_MASK_ALL
);
914 else if (pid_or_core_arg
)
916 /* The user specified 'gdb program pid' or gdb program core'.
917 If pid_or_core_arg's first character is a digit, try attach
918 first and then corefile. Otherwise try just corefile. */
920 if (isdigit (pid_or_core_arg
[0]))
922 if (catch_command_errors (attach_command
, pid_or_core_arg
,
923 !batch_flag
, RETURN_MASK_ALL
) == 0)
924 catch_command_errors (core_file_command
, pid_or_core_arg
,
925 !batch_flag
, RETURN_MASK_ALL
);
927 else /* Can't be a pid, better be a corefile. */
928 catch_command_errors (core_file_command
, pid_or_core_arg
,
929 !batch_flag
, RETURN_MASK_ALL
);
933 set_inferior_io_terminal (ttyarg
);
935 /* Error messages should no longer be distinguished with extra output. */
936 error_pre_print
= NULL
;
937 quit_pre_print
= NULL
;
938 warning_pre_print
= _("warning: ");
940 /* Read the .gdbinit file in the current directory, *if* it isn't
941 the same as the $HOME/.gdbinit file (it should exist, also). */
942 if (local_gdbinit
&& !inhibit_gdbinit
)
943 catch_command_errors (source_script
, local_gdbinit
, 0, RETURN_MASK_ALL
);
945 /* Now that all .gdbinit's have been read and all -d options have been
946 processed, we can read any scripts mentioned in SYMARG.
947 We wait until now because it is common to add to the source search
948 path in local_gdbinit. */
949 gdbpy_global_auto_load
= save_auto_load
;
950 ALL_OBJFILES (objfile
)
951 load_auto_scripts_for_objfile (objfile
);
953 /* Process '-x' and '-ex' options. */
954 for (i
= 0; VEC_iterate (cmdarg_s
, cmdarg_vec
, i
, cmdarg_p
); i
++)
955 switch (cmdarg_p
->type
)
958 catch_command_errors (source_script
, cmdarg_p
->string
,
959 !batch_flag
, RETURN_MASK_ALL
);
962 catch_command_errors (execute_command
, cmdarg_p
->string
,
963 !batch_flag
, RETURN_MASK_ALL
);
967 /* Read in the old history after all the command files have been
973 /* We have hit the end of the batch file. */
974 quit_force (NULL
, 0);
977 /* Show time and/or space usage. */
978 do_cleanups (pre_stat_chain
);
980 /* NOTE: cagney/1999-11-07: There is probably no reason for not
981 moving this loop and the code found in captured_command_loop()
982 into the command_loop() proper. The main thing holding back that
983 change - SET_TOP_LEVEL() - has been eliminated. */
986 catch_errors (captured_command_loop
, 0, "", RETURN_MASK_ALL
);
988 /* No exit -- exit is through quit_command. */
992 gdb_main (struct captured_main_args
*args
)
994 use_windows
= args
->use_windows
;
995 catch_errors (captured_main
, args
, "", RETURN_MASK_ALL
);
996 /* The only way to end up here is by an error (normal exit is
997 handled by quit_force()), hence always return an error status. */
1002 /* Don't use *_filtered for printing help. We don't want to prompt
1003 for continue no matter how small the screen or how much we're going
1007 print_gdb_help (struct ui_file
*stream
)
1009 char *system_gdbinit
;
1011 char *local_gdbinit
;
1013 get_init_files (&system_gdbinit
, &home_gdbinit
, &local_gdbinit
);
1015 fputs_unfiltered (_("\
1016 This is the GNU debugger. Usage:\n\n\
1017 gdb [options] [executable-file [core-file or process-id]]\n\
1018 gdb [options] --args executable-file [inferior-arguments ...]\n\n\
1021 fputs_unfiltered (_("\
1022 --args Arguments after executable-file are passed to inferior\n\
1024 fputs_unfiltered (_("\
1025 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
1026 --batch Exit after processing options.\n\
1027 --batch-silent As for --batch, but suppress all gdb stdout output.\n\
1028 --return-child-result\n\
1029 GDB exit code will be the child's exit code.\n\
1030 --cd=DIR Change current directory to DIR.\n\
1031 --command=FILE, -x Execute GDB commands from FILE.\n\
1032 --eval-command=COMMAND, -ex\n\
1033 Execute a single GDB command.\n\
1034 May be used multiple times and in conjunction\n\
1036 --init-command=FILE, -ix Like -x but execute it before loading inferior.\n\
1037 --init-eval-command=COMMAND, -iex Like -ex but before loading inferior.\n\
1038 --core=COREFILE Analyze the core dump COREFILE.\n\
1039 --pid=PID Attach to running process PID.\n\
1041 fputs_unfiltered (_("\
1042 --dbx DBX compatibility mode.\n\
1043 --directory=DIR Search for source files in DIR.\n\
1044 --epoch Output information used by epoch emacs-GDB interface.\n\
1045 --exec=EXECFILE Use EXECFILE as the executable.\n\
1046 --fullname Output information used by emacs-GDB interface.\n\
1047 --help Print this message.\n\
1049 fputs_unfiltered (_("\
1050 --interpreter=INTERP\n\
1051 Select a specific interpreter / user interface\n\
1053 fputs_unfiltered (_("\
1054 -l TIMEOUT Set timeout in seconds for remote debugging.\n\
1055 --nw Do not use a window interface.\n\
1056 --nx Do not read "), stream
);
1057 fputs_unfiltered (gdbinit
, stream
);
1058 fputs_unfiltered (_(" file.\n\
1059 --quiet Do not print version number on startup.\n\
1060 --readnow Fully read symbol files on first access.\n\
1062 fputs_unfiltered (_("\
1063 --se=FILE Use FILE as symbol file and executable file.\n\
1064 --symbols=SYMFILE Read symbols from SYMFILE.\n\
1065 --tty=TTY Use TTY for input/output by the program being debugged.\n\
1068 fputs_unfiltered (_("\
1069 --tui Use a terminal user interface.\n\
1072 fputs_unfiltered (_("\
1073 --use-deprecated-index-sections\n\
1074 Do not reject deprecated .gdb_index sections.\n\
1076 fputs_unfiltered (_("\
1077 --version Print version information and then exit.\n\
1078 -w Use a window interface.\n\
1079 --write Set writing into executable and core files.\n\
1080 --xdb XDB compatibility mode.\n\
1082 fputs_unfiltered (_("\n\
1083 At startup, GDB reads the following init files and executes their commands:\n\
1086 fprintf_unfiltered (stream
, _("\
1087 * system-wide init file: %s\n\
1088 "), system_gdbinit
);
1090 fprintf_unfiltered (stream
, _("\
1091 * user-specific init file: %s\n\
1094 fprintf_unfiltered (stream
, _("\
1095 * local init file: ./%s\n\
1097 fputs_unfiltered (_("\n\
1098 For more information, type \"help\" from within GDB, or consult the\n\
1099 GDB manual (available as on-line info or a printed manual).\n\
1101 if (REPORT_BUGS_TO
[0] && stream
== gdb_stdout
)
1102 fprintf_unfiltered (stream
, _("\
1103 Report bugs to \"%s\".\n\
1104 "), REPORT_BUGS_TO
);