1 /* Top level stuff for GDB, the GNU debugger.
3 Copyright (C) 1986-2013 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"
44 #include "auto-load.h"
47 #include "filenames.h"
49 # include "windows-nat.h"
52 /* The selected interpreter. This will be used as a set command
53 variable, so it should always be malloc'ed - since
54 do_setshow_command will free it. */
57 /* Whether xdb commands will be handled. */
60 /* Whether dbx commands will be handled. */
63 /* System root path, used to find libraries etc. */
64 char *gdb_sysroot
= 0;
66 /* GDB datadir, used to store data files. */
67 char *gdb_datadir
= 0;
69 /* Non-zero if GDB_DATADIR was provided on the command line.
70 This doesn't track whether data-directory is set later from the
71 command line, but we don't reread system.gdbinit when that happens. */
72 static int gdb_datadir_provided
= 0;
74 /* If gdb was configured with --with-python=/path,
75 the possibly relocated path to python's lib directory. */
76 char *python_libdir
= 0;
78 struct ui_file
*gdb_stdout
;
79 struct ui_file
*gdb_stderr
;
80 struct ui_file
*gdb_stdlog
;
81 struct ui_file
*gdb_stdin
;
82 /* Target IO streams. */
83 struct ui_file
*gdb_stdtargin
;
84 struct ui_file
*gdb_stdtarg
;
85 struct ui_file
*gdb_stdtargerr
;
87 /* True if --batch or --batch-silent was seen. */
90 /* Support for the --batch-silent option. */
93 /* Support for --return-child-result option.
94 Set the default to -1 to return error in the case
95 that the program does not run or does not complete. */
96 int return_child_result
= 0;
97 int return_child_result_value
= -1;
100 /* GDB as it has been invoked from the command line (i.e. argv[0]). */
101 static char *gdb_program_name
;
103 static void print_gdb_help (struct ui_file
*);
105 /* Relocate a file or directory. PROGNAME is the name by which gdb
106 was invoked (i.e., argv[0]). INITIAL is the default value for the
107 file or directory. FLAG is true if the value is relocatable, false
108 otherwise. Returns a newly allocated string; this may return NULL
109 under the same conditions as make_relative_prefix. */
112 relocate_path (const char *progname
, const char *initial
, int flag
)
115 return make_relative_prefix (progname
, BINDIR
, initial
);
116 return xstrdup (initial
);
119 /* Like relocate_path, but specifically checks for a directory.
120 INITIAL is relocated according to the rules of relocate_path. If
121 the result is a directory, it is used; otherwise, INITIAL is used.
122 The chosen directory is then canonicalized using lrealpath. This
123 function always returns a newly-allocated string. */
126 relocate_gdb_directory (const char *initial
, int flag
)
130 dir
= relocate_path (gdb_program_name
, initial
, flag
);
135 if (*dir
== '\0' || stat (dir
, &s
) != 0 || !S_ISDIR (s
.st_mode
))
142 dir
= xstrdup (initial
);
144 /* Canonicalize the directory. */
147 char *canon_sysroot
= lrealpath (dir
);
159 /* Compute the locations of init files that GDB should source and
160 return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If
161 there is no system gdbinit (resp. home gdbinit and local gdbinit)
162 to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
163 LOCAL_GDBINIT) is set to NULL. */
165 get_init_files (char **system_gdbinit
,
167 char **local_gdbinit
)
169 static char *sysgdbinit
= NULL
;
170 static char *homeinit
= NULL
;
171 static char *localinit
= NULL
;
172 static int initialized
= 0;
176 struct stat homebuf
, cwdbuf
, s
;
179 if (SYSTEM_GDBINIT
[0])
181 int datadir_len
= strlen (GDB_DATADIR
);
182 int sys_gdbinit_len
= strlen (SYSTEM_GDBINIT
);
183 char *relocated_sysgdbinit
;
185 /* If SYSTEM_GDBINIT lives in data-directory, and data-directory
186 has been provided, search for SYSTEM_GDBINIT there. */
187 if (gdb_datadir_provided
188 && datadir_len
< sys_gdbinit_len
189 && filename_ncmp (SYSTEM_GDBINIT
, GDB_DATADIR
, datadir_len
) == 0
190 && IS_DIR_SEPARATOR (SYSTEM_GDBINIT
[datadir_len
]))
192 /* Append the part of SYSTEM_GDBINIT that follows GDB_DATADIR
194 char *tmp_sys_gdbinit
= xstrdup (SYSTEM_GDBINIT
+ datadir_len
);
197 for (p
= tmp_sys_gdbinit
; IS_DIR_SEPARATOR (*p
); ++p
)
199 relocated_sysgdbinit
= concat (gdb_datadir
, SLASH_STRING
, p
,
201 xfree (tmp_sys_gdbinit
);
205 relocated_sysgdbinit
= relocate_path (gdb_program_name
,
207 SYSTEM_GDBINIT_RELOCATABLE
);
209 if (relocated_sysgdbinit
&& stat (relocated_sysgdbinit
, &s
) == 0)
210 sysgdbinit
= relocated_sysgdbinit
;
212 xfree (relocated_sysgdbinit
);
215 homedir
= getenv ("HOME");
217 /* If the .gdbinit file in the current directory is the same as
218 the $HOME/.gdbinit file, it should not be sourced. homebuf
219 and cwdbuf are used in that purpose. Make sure that the stats
220 are zero in case one of them fails (this guarantees that they
221 won't match if either exists). */
223 memset (&homebuf
, 0, sizeof (struct stat
));
224 memset (&cwdbuf
, 0, sizeof (struct stat
));
228 homeinit
= xstrprintf ("%s/%s", homedir
, gdbinit
);
229 if (stat (homeinit
, &homebuf
) != 0)
236 if (stat (gdbinit
, &cwdbuf
) == 0)
239 || memcmp ((char *) &homebuf
, (char *) &cwdbuf
,
240 sizeof (struct stat
)))
247 *system_gdbinit
= sysgdbinit
;
248 *home_gdbinit
= homeinit
;
249 *local_gdbinit
= localinit
;
252 /* Call command_loop. If it happens to return, pass that through as a
253 non-zero return status. */
256 captured_command_loop (void *data
)
258 /* Top-level execution commands can be run on the background from
260 interpreter_async
= 1;
262 current_interp_command_loop ();
263 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
264 would clean things up (restoring the cleanup chain) to the state
265 they were just prior to the call. Technically, this means that
266 the do_cleanups() below is redundant. Unfortunately, many FUNCs
267 are not that well behaved. do_cleanups should either be replaced
268 with a do_cleanups call (to cover the problem) or an assertion
269 check to detect bad FUNCs code. */
270 do_cleanups (all_cleanups ());
271 /* If the command_loop returned, normally (rather than threw an
272 error) we try to quit. If the quit is aborted, catch_errors()
273 which called this catch the signal and restart the command
275 quit_command (NULL
, instream
== stdin
);
279 /* Arguments of --command option and its counterpart. */
280 typedef struct cmdarg
{
281 /* Type of this option. */
283 /* Option type -x. */
286 /* Option type -ex. */
289 /* Option type -ix. */
292 /* Option type -iex. */
296 /* Value of this option - filename or the GDB command itself. String memory
297 is not owned by this structure despite it is 'const'. */
301 /* Define type VEC (cmdarg_s). */
302 DEF_VEC_O (cmdarg_s
);
305 captured_main (void *data
)
307 struct captured_main_args
*context
= data
;
308 int argc
= context
->argc
;
309 char **argv
= context
->argv
;
310 static int quiet
= 0;
311 static int set_args
= 0;
312 static int inhibit_home_gdbinit
= 0;
314 /* Pointers to various arguments from command line. */
316 char *execarg
= NULL
;
318 char *corearg
= NULL
;
319 char *pid_or_core_arg
= NULL
;
323 /* These are static so that we can take their address in an
325 static int print_help
;
326 static int print_version
;
328 /* Pointers to all arguments of --command option. */
329 VEC (cmdarg_s
) *cmdarg_vec
= NULL
;
330 struct cmdarg
*cmdarg_p
;
332 /* Indices of all arguments of --directory option. */
334 /* Allocated size. */
336 /* Number of elements used. */
339 /* gdb init files. */
340 char *system_gdbinit
;
346 struct objfile
*objfile
;
348 struct cleanup
*pre_stat_chain
;
351 /* Set this before calling make_command_stats_cleanup. */
352 lim_at_start
= (char *) sbrk (0);
355 pre_stat_chain
= make_command_stats_cleanup (0);
357 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
358 setlocale (LC_MESSAGES
, "");
360 #if defined (HAVE_SETLOCALE)
361 setlocale (LC_CTYPE
, "");
363 bindtextdomain (PACKAGE
, LOCALEDIR
);
364 textdomain (PACKAGE
);
368 make_cleanup (VEC_cleanup (cmdarg_s
), &cmdarg_vec
);
370 dirarg
= (char **) xmalloc (dirsize
* sizeof (*dirarg
));
374 saved_command_line
= (char *) xmalloc (saved_command_line_size
);
375 saved_command_line
[0] = '\0';
378 gdb_stdout
= stdio_fileopen (stdout
);
379 gdb_stderr
= stdio_fileopen (stderr
);
380 gdb_stdlog
= gdb_stderr
; /* for moment */
381 gdb_stdtarg
= gdb_stderr
; /* for moment */
382 gdb_stdin
= stdio_fileopen (stdin
);
383 gdb_stdtargerr
= gdb_stderr
; /* for moment */
384 gdb_stdtargin
= gdb_stdin
; /* for moment */
387 /* On Windows, argv[0] is not necessarily set to absolute form when
388 GDB is found along PATH, without which relocation doesn't work. */
389 gdb_program_name
= windows_get_absolute_argv0 (argv
[0]);
391 gdb_program_name
= xstrdup (argv
[0]);
394 if (! getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
)))
395 /* Don't use *_filtered or warning() (which relies on
396 current_target) until after initialize_all_files(). */
397 fprintf_unfiltered (gdb_stderr
,
398 _("%s: warning: error finding "
399 "working directory: %s\n"),
400 argv
[0], safe_strerror (errno
));
402 current_directory
= gdb_dirbuf
;
404 /* Set the sysroot path. */
405 gdb_sysroot
= relocate_gdb_directory (TARGET_SYSTEM_ROOT
,
406 TARGET_SYSTEM_ROOT_RELOCATABLE
);
408 debug_file_directory
= relocate_gdb_directory (DEBUGDIR
,
409 DEBUGDIR_RELOCATABLE
);
411 gdb_datadir
= relocate_gdb_directory (GDB_DATADIR
,
412 GDB_DATADIR_RELOCATABLE
);
414 #ifdef WITH_PYTHON_PATH
416 /* For later use in helping Python find itself. */
417 char *tmp
= concat (WITH_PYTHON_PATH
, SLASH_STRING
, "lib", NULL
);
419 python_libdir
= relocate_gdb_directory (tmp
, PYTHON_PATH_RELOCATABLE
);
425 add_substitute_path_rule (RELOC_SRCDIR
,
426 make_relative_prefix (gdb_program_name
, BINDIR
,
430 /* There will always be an interpreter. Either the one passed into
431 this captured main, or one specified by the user at start up, or
432 the console. Initialize the interpreter to the one requested by
434 interpreter_p
= xstrdup (context
->interpreter_p
);
436 /* Parse arguments and options. */
439 /* When var field is 0, use flag field to record the equivalent
440 short option (or arbitrary numbers starting at 10 for those
441 with no equivalent). */
453 static struct option long_options
[] =
455 {"tui", no_argument
, 0, OPT_TUI
},
456 {"xdb", no_argument
, &xdb_commands
, 1},
457 {"dbx", no_argument
, &dbx_commands
, 1},
458 {"readnow", no_argument
, &readnow_symbol_files
, 1},
459 {"r", no_argument
, &readnow_symbol_files
, 1},
460 {"quiet", no_argument
, &quiet
, 1},
461 {"q", no_argument
, &quiet
, 1},
462 {"silent", no_argument
, &quiet
, 1},
463 {"nh", no_argument
, &inhibit_home_gdbinit
, 1},
464 {"nx", no_argument
, &inhibit_gdbinit
, 1},
465 {"n", no_argument
, &inhibit_gdbinit
, 1},
466 {"batch-silent", no_argument
, 0, 'B'},
467 {"batch", no_argument
, &batch_flag
, 1},
469 /* This is a synonym for "--annotate=1". --annotate is now
470 preferred, but keep this here for a long time because people
471 will be running emacses which use --fullname. */
472 {"fullname", no_argument
, 0, 'f'},
473 {"f", no_argument
, 0, 'f'},
475 {"annotate", required_argument
, 0, OPT_ANNOTATE
},
476 {"help", no_argument
, &print_help
, 1},
477 {"se", required_argument
, 0, OPT_SE
},
478 {"symbols", required_argument
, 0, 's'},
479 {"s", required_argument
, 0, 's'},
480 {"exec", required_argument
, 0, 'e'},
481 {"e", required_argument
, 0, 'e'},
482 {"core", required_argument
, 0, 'c'},
483 {"c", required_argument
, 0, 'c'},
484 {"pid", required_argument
, 0, 'p'},
485 {"p", required_argument
, 0, 'p'},
486 {"command", required_argument
, 0, 'x'},
487 {"eval-command", required_argument
, 0, 'X'},
488 {"version", no_argument
, &print_version
, 1},
489 {"x", required_argument
, 0, 'x'},
490 {"ex", required_argument
, 0, 'X'},
491 {"init-command", required_argument
, 0, OPT_IX
},
492 {"init-eval-command", required_argument
, 0, OPT_IEX
},
493 {"ix", required_argument
, 0, OPT_IX
},
494 {"iex", required_argument
, 0, OPT_IEX
},
496 {"tclcommand", required_argument
, 0, 'z'},
497 {"enable-external-editor", no_argument
, 0, 'y'},
498 {"editor-command", required_argument
, 0, 'w'},
500 {"ui", required_argument
, 0, 'i'},
501 {"interpreter", required_argument
, 0, 'i'},
502 {"i", required_argument
, 0, 'i'},
503 {"directory", required_argument
, 0, 'd'},
504 {"d", required_argument
, 0, 'd'},
505 {"data-directory", required_argument
, 0, 'D'},
506 {"cd", required_argument
, 0, OPT_CD
},
507 {"tty", required_argument
, 0, 't'},
508 {"baud", required_argument
, 0, 'b'},
509 {"b", required_argument
, 0, 'b'},
510 {"nw", no_argument
, NULL
, OPT_NOWINDOWS
},
511 {"nowindows", no_argument
, NULL
, OPT_NOWINDOWS
},
512 {"w", no_argument
, NULL
, OPT_WINDOWS
},
513 {"windows", no_argument
, NULL
, OPT_WINDOWS
},
514 {"statistics", no_argument
, 0, OPT_STATISTICS
},
515 {"write", no_argument
, &write_files
, 1},
516 {"args", no_argument
, &set_args
, 1},
517 {"l", required_argument
, 0, 'l'},
518 {"return-child-result", no_argument
, &return_child_result
, 1},
519 {0, no_argument
, 0, 0}
526 c
= getopt_long_only (argc
, argv
, "",
527 long_options
, &option_index
);
528 if (c
== EOF
|| set_args
)
531 /* Long option that takes an argument. */
532 if (c
== 0 && long_options
[option_index
].flag
== 0)
533 c
= long_options
[option_index
].val
;
538 /* Long option that just sets a flag. */
548 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
549 annotation_level
= atoi (optarg
);
552 /* Enable the display of both time and space usage. */
553 set_per_command_time (1);
554 set_per_command_space (1);
557 /* --tui is equivalent to -i=tui. */
559 xfree (interpreter_p
);
560 interpreter_p
= xstrdup (INTERP_TUI
);
562 fprintf_unfiltered (gdb_stderr
,
563 _("%s: TUI mode is not supported\n"),
569 /* FIXME: cagney/2003-03-01: Not sure if this option is
570 actually useful, and if it is, what it should do. */
572 /* --windows is equivalent to -i=insight. */
573 xfree (interpreter_p
);
574 interpreter_p
= xstrdup (INTERP_INSIGHT
);
579 /* -nw is equivalent to -i=console. */
580 xfree (interpreter_p
);
581 interpreter_p
= xstrdup (INTERP_CONSOLE
);
585 annotation_level
= 1;
586 /* We have probably been invoked from emacs. Disable
604 struct cmdarg cmdarg
= { CMDARG_FILE
, optarg
};
606 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
611 struct cmdarg cmdarg
= { CMDARG_COMMAND
, optarg
};
613 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
618 struct cmdarg cmdarg
= { CMDARG_INIT_FILE
, optarg
};
620 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
625 struct cmdarg cmdarg
= { CMDARG_INIT_COMMAND
, optarg
};
627 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
631 batch_flag
= batch_silent
= 1;
632 gdb_stdout
= ui_file_new();
636 gdb_datadir
= xstrdup (optarg
);
637 gdb_datadir_provided
= 1;
642 extern int gdbtk_test (char *);
644 if (!gdbtk_test (optarg
))
646 fprintf_unfiltered (gdb_stderr
,
647 _("%s: unable to load "
648 "tclcommand file \"%s\""),
655 /* Backwards compatibility only. */
659 /* Set the external editor commands when gdb is farming out files
660 to be edited by another program. */
661 extern char *external_editor_command
;
663 external_editor_command
= xstrdup (optarg
);
668 xfree (interpreter_p
);
669 interpreter_p
= xstrdup (optarg
);
672 dirarg
[ndir
++] = optarg
;
676 dirarg
= (char **) xrealloc ((char *) dirarg
,
677 dirsize
* sizeof (*dirarg
));
691 i
= strtol (optarg
, &p
, 0);
692 if (i
== 0 && p
== optarg
)
694 /* Don't use *_filtered or warning() (which relies on
695 current_target) until after initialize_all_files(). */
699 _("warning: could not set baud rate to `%s'.\n"), optarg
);
709 i
= strtol (optarg
, &p
, 0);
710 if (i
== 0 && p
== optarg
)
712 /* Don't use *_filtered or warning() (which relies on
713 current_target) until after initialize_all_files(). */
715 fprintf_unfiltered (gdb_stderr
,
716 _("warning: could not set "
717 "timeout limit to `%s'.\n"), optarg
);
724 fprintf_unfiltered (gdb_stderr
,
725 _("Use `%s --help' for a "
726 "complete list of options.\n"),
732 /* If --help or --version, disable window interface. */
733 if (print_help
|| print_version
)
742 /* Initialize all files. Give the interpreter a chance to take
743 control of the console via the deprecated_init_ui_hook (). */
744 gdb_init (gdb_program_name
);
746 /* Now that gdb_init has created the initial inferior, we're in
747 position to set args for that inferior. */
750 /* The remaining options are the command-line options for the
751 inferior. The first one is the sym/exec file, and the rest
755 fprintf_unfiltered (gdb_stderr
,
756 _("%s: `--args' specified but "
757 "no program specified\n"),
761 symarg
= argv
[optind
];
762 execarg
= argv
[optind
];
764 set_inferior_args_vector (argc
- optind
, &argv
[optind
]);
768 /* OK, that's all the options. */
770 /* The first argument, if specified, is the name of the
774 symarg
= argv
[optind
];
775 execarg
= argv
[optind
];
779 /* If the user hasn't already specified a PID or the name of a
780 core file, then a second optional argument is allowed. If
781 present, this argument should be interpreted as either a
782 PID or a core file, whichever works. */
783 if (pidarg
== NULL
&& corearg
== NULL
&& optind
< argc
)
785 pid_or_core_arg
= argv
[optind
];
789 /* Any argument left on the command line is unexpected and
790 will be ignored. Inform the user. */
792 fprintf_unfiltered (gdb_stderr
,
793 _("Excess command line "
794 "arguments ignored. (%s%s)\n"),
796 (optind
== argc
- 1) ? "" : " ...");
799 /* Lookup gdbinit files. Note that the gdbinit file name may be
800 overriden during file initialization, so get_init_files should be
801 called after gdb_init. */
802 get_init_files (&system_gdbinit
, &home_gdbinit
, &local_gdbinit
);
804 /* Do these (and anything which might call wrap_here or *_filtered)
805 after initialize_all_files() but before the interpreter has been
806 installed. Otherwize the help/version messages will be eaten by
807 the interpreter's output handler. */
811 print_gdb_version (gdb_stdout
);
813 printf_filtered ("\n");
819 print_gdb_help (gdb_stdout
);
820 fputs_unfiltered ("\n", gdb_stdout
);
824 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
825 GDB retain the old MI1 interpreter startup behavior. Output the
826 copyright message before the interpreter is installed. That way
827 it isn't encapsulated in MI output. */
828 if (!quiet
&& strcmp (interpreter_p
, INTERP_MI1
) == 0)
830 /* Print all the junk at the top, with trailing "..." if we are
831 about to read a symbol file (possibly slowly). */
832 print_gdb_version (gdb_stdout
);
834 printf_filtered ("..");
836 printf_filtered ("\n");
837 gdb_flush (gdb_stdout
); /* Force to screen during slow
841 /* Install the default UI. All the interpreters should have had a
842 look at things by now. Initialize the default interpreter. */
846 struct interp
*interp
= interp_lookup (interpreter_p
);
849 error (_("Interpreter `%s' unrecognized"), interpreter_p
);
851 if (!interp_set (interp
, 1))
853 fprintf_unfiltered (gdb_stderr
,
854 "Interpreter `%s' failed to initialize.\n",
860 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
861 GDB retain the old MI1 interpreter startup behavior. Output the
862 copyright message after the interpreter is installed when it is
863 any sane interpreter. */
864 if (!quiet
&& !current_interp_named_p (INTERP_MI1
))
866 /* Print all the junk at the top, with trailing "..." if we are
867 about to read a symbol file (possibly slowly). */
868 print_gdb_version (gdb_stdout
);
870 printf_filtered ("..");
872 printf_filtered ("\n");
873 gdb_flush (gdb_stdout
); /* Force to screen during slow
877 /* Set off error and warning messages with a blank line. */
878 error_pre_print
= "\n";
879 quit_pre_print
= error_pre_print
;
880 warning_pre_print
= _("\nwarning: ");
882 /* Read and execute the system-wide gdbinit file, if it exists.
883 This is done *before* all the command line arguments are
884 processed; it sets global parameters, which are independent of
885 what file you are debugging or what directory you are in. */
886 if (system_gdbinit
&& !inhibit_gdbinit
)
887 catch_command_errors (source_script
, system_gdbinit
, 0, RETURN_MASK_ALL
);
889 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
890 *before* all the command line arguments are processed; it sets
891 global parameters, which are independent of what file you are
892 debugging or what directory you are in. */
894 if (home_gdbinit
&& !inhibit_gdbinit
&& !inhibit_home_gdbinit
)
895 catch_command_errors (source_script
, home_gdbinit
, 0, RETURN_MASK_ALL
);
897 /* Process '-ix' and '-iex' options early. */
898 for (i
= 0; VEC_iterate (cmdarg_s
, cmdarg_vec
, i
, cmdarg_p
); i
++)
899 switch (cmdarg_p
->type
)
901 case CMDARG_INIT_FILE
:
902 catch_command_errors (source_script
, cmdarg_p
->string
,
903 !batch_flag
, RETURN_MASK_ALL
);
905 case CMDARG_INIT_COMMAND
:
906 catch_command_errors (execute_command
, cmdarg_p
->string
,
907 !batch_flag
, RETURN_MASK_ALL
);
911 /* Now perform all the actions indicated by the arguments. */
914 catch_command_errors (cd_command
, cdarg
, 0, RETURN_MASK_ALL
);
917 for (i
= 0; i
< ndir
; i
++)
918 catch_command_errors (directory_switch
, dirarg
[i
], 0, RETURN_MASK_ALL
);
921 /* Skip auto-loading section-specified scripts until we've sourced
922 local_gdbinit (which is often used to augment the source search
924 save_auto_load
= global_auto_load
;
925 global_auto_load
= 0;
929 && strcmp (execarg
, symarg
) == 0)
931 /* The exec file and the symbol-file are the same. If we can't
932 open it, better only print one error message.
933 catch_command_errors returns non-zero on success! */
934 if (catch_command_errors (exec_file_attach
, execarg
,
935 !batch_flag
, RETURN_MASK_ALL
))
936 catch_command_errors (symbol_file_add_main
, symarg
,
937 !batch_flag
, RETURN_MASK_ALL
);
942 catch_command_errors (exec_file_attach
, execarg
,
943 !batch_flag
, RETURN_MASK_ALL
);
945 catch_command_errors (symbol_file_add_main
, symarg
,
946 !batch_flag
, RETURN_MASK_ALL
);
949 if (corearg
&& pidarg
)
950 error (_("Can't attach to process and specify "
951 "a core file at the same time."));
954 catch_command_errors (core_file_command
, corearg
,
955 !batch_flag
, RETURN_MASK_ALL
);
956 else if (pidarg
!= NULL
)
957 catch_command_errors (attach_command
, pidarg
,
958 !batch_flag
, RETURN_MASK_ALL
);
959 else if (pid_or_core_arg
)
961 /* The user specified 'gdb program pid' or gdb program core'.
962 If pid_or_core_arg's first character is a digit, try attach
963 first and then corefile. Otherwise try just corefile. */
965 if (isdigit (pid_or_core_arg
[0]))
967 if (catch_command_errors (attach_command
, pid_or_core_arg
,
968 !batch_flag
, RETURN_MASK_ALL
) == 0)
969 catch_command_errors (core_file_command
, pid_or_core_arg
,
970 !batch_flag
, RETURN_MASK_ALL
);
972 else /* Can't be a pid, better be a corefile. */
973 catch_command_errors (core_file_command
, pid_or_core_arg
,
974 !batch_flag
, RETURN_MASK_ALL
);
978 set_inferior_io_terminal (ttyarg
);
980 /* Error messages should no longer be distinguished with extra output. */
981 error_pre_print
= NULL
;
982 quit_pre_print
= NULL
;
983 warning_pre_print
= _("warning: ");
985 /* Read the .gdbinit file in the current directory, *if* it isn't
986 the same as the $HOME/.gdbinit file (it should exist, also). */
989 auto_load_local_gdbinit_pathname
= gdb_realpath (local_gdbinit
);
991 if (!inhibit_gdbinit
&& auto_load_local_gdbinit
992 && file_is_auto_load_safe (local_gdbinit
,
993 _("auto-load: Loading .gdbinit "
997 auto_load_local_gdbinit_loaded
= 1;
999 catch_command_errors (source_script
, local_gdbinit
, 0,
1004 /* Now that all .gdbinit's have been read and all -d options have been
1005 processed, we can read any scripts mentioned in SYMARG.
1006 We wait until now because it is common to add to the source search
1007 path in local_gdbinit. */
1008 global_auto_load
= save_auto_load
;
1009 ALL_OBJFILES (objfile
)
1010 load_auto_scripts_for_objfile (objfile
);
1012 /* Process '-x' and '-ex' options. */
1013 for (i
= 0; VEC_iterate (cmdarg_s
, cmdarg_vec
, i
, cmdarg_p
); i
++)
1014 switch (cmdarg_p
->type
)
1017 catch_command_errors (source_script
, cmdarg_p
->string
,
1018 !batch_flag
, RETURN_MASK_ALL
);
1020 case CMDARG_COMMAND
:
1021 catch_command_errors (execute_command
, cmdarg_p
->string
,
1022 !batch_flag
, RETURN_MASK_ALL
);
1026 /* Read in the old history after all the command files have been
1032 /* We have hit the end of the batch file. */
1033 quit_force (NULL
, 0);
1036 /* Show time and/or space usage. */
1037 do_cleanups (pre_stat_chain
);
1039 /* NOTE: cagney/1999-11-07: There is probably no reason for not
1040 moving this loop and the code found in captured_command_loop()
1041 into the command_loop() proper. The main thing holding back that
1042 change - SET_TOP_LEVEL() - has been eliminated. */
1045 catch_errors (captured_command_loop
, 0, "", RETURN_MASK_ALL
);
1047 /* No exit -- exit is through quit_command. */
1051 gdb_main (struct captured_main_args
*args
)
1053 use_windows
= args
->use_windows
;
1054 catch_errors (captured_main
, args
, "", RETURN_MASK_ALL
);
1055 /* The only way to end up here is by an error (normal exit is
1056 handled by quit_force()), hence always return an error status. */
1061 /* Don't use *_filtered for printing help. We don't want to prompt
1062 for continue no matter how small the screen or how much we're going
1066 print_gdb_help (struct ui_file
*stream
)
1068 char *system_gdbinit
;
1070 char *local_gdbinit
;
1072 get_init_files (&system_gdbinit
, &home_gdbinit
, &local_gdbinit
);
1074 fputs_unfiltered (_("\
1075 This is the GNU debugger. Usage:\n\n\
1076 gdb [options] [executable-file [core-file or process-id]]\n\
1077 gdb [options] --args executable-file [inferior-arguments ...]\n\n\
1080 fputs_unfiltered (_("\
1081 --args Arguments after executable-file are passed to inferior\n\
1083 fputs_unfiltered (_("\
1084 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
1085 --batch Exit after processing options.\n\
1086 --batch-silent As for --batch, but suppress all gdb stdout output.\n\
1087 --return-child-result\n\
1088 GDB exit code will be the child's exit code.\n\
1089 --cd=DIR Change current directory to DIR.\n\
1090 --command=FILE, -x Execute GDB commands from FILE.\n\
1091 --eval-command=COMMAND, -ex\n\
1092 Execute a single GDB command.\n\
1093 May be used multiple times and in conjunction\n\
1095 --init-command=FILE, -ix Like -x but execute it before loading inferior.\n\
1096 --init-eval-command=COMMAND, -iex Like -ex but before loading inferior.\n\
1097 --core=COREFILE Analyze the core dump COREFILE.\n\
1098 --pid=PID Attach to running process PID.\n\
1100 fputs_unfiltered (_("\
1101 --dbx DBX compatibility mode.\n\
1102 --directory=DIR Search for source files in DIR.\n\
1103 --exec=EXECFILE Use EXECFILE as the executable.\n\
1104 --fullname Output information used by emacs-GDB interface.\n\
1105 --help Print this message.\n\
1107 fputs_unfiltered (_("\
1108 --interpreter=INTERP\n\
1109 Select a specific interpreter / user interface\n\
1111 fputs_unfiltered (_("\
1112 -l TIMEOUT Set timeout in seconds for remote debugging.\n\
1113 --nw Do not use a window interface.\n\
1114 --nx Do not read any "), stream
);
1115 fputs_unfiltered (gdbinit
, stream
);
1116 fputs_unfiltered (_(" files.\n\
1117 --nh Do not read "), stream
);
1118 fputs_unfiltered (gdbinit
, stream
);
1119 fputs_unfiltered (_(" file from home directory.\n\
1120 --quiet Do not print version number on startup.\n\
1121 --readnow Fully read symbol files on first access.\n\
1123 fputs_unfiltered (_("\
1124 --se=FILE Use FILE as symbol file and executable file.\n\
1125 --symbols=SYMFILE Read symbols from SYMFILE.\n\
1126 --tty=TTY Use TTY for input/output by the program being debugged.\n\
1129 fputs_unfiltered (_("\
1130 --tui Use a terminal user interface.\n\
1133 fputs_unfiltered (_("\
1134 --version Print version information and then exit.\n\
1135 -w Use a window interface.\n\
1136 --write Set writing into executable and core files.\n\
1137 --xdb XDB compatibility mode.\n\
1139 fputs_unfiltered (_("\n\
1140 At startup, GDB reads the following init files and executes their commands:\n\
1143 fprintf_unfiltered (stream
, _("\
1144 * system-wide init file: %s\n\
1145 "), system_gdbinit
);
1147 fprintf_unfiltered (stream
, _("\
1148 * user-specific init file: %s\n\
1151 fprintf_unfiltered (stream
, _("\
1152 * local init file (see also 'set auto-load local-gdbinit'): ./%s\n\
1154 fputs_unfiltered (_("\n\
1155 For more information, type \"help\" from within GDB, or consult the\n\
1156 GDB manual (available as on-line info or a printed manual).\n\
1158 if (REPORT_BUGS_TO
[0] && stream
== gdb_stdout
)
1159 fprintf_unfiltered (stream
, _("\
1160 Report bugs to \"%s\".\n\
1161 "), REPORT_BUGS_TO
);