1 /* Top level stuff for GDB, the GNU debugger.
3 Copyright (C) 1986-2014 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>
35 #include "event-loop.h"
41 #include "cli/cli-cmds.h"
43 #include "auto-load.h"
46 #include "filenames.h"
47 #include "filestuff.h"
49 /* The selected interpreter. This will be used as a set command
50 variable, so it should always be malloc'ed - since
51 do_setshow_command will free it. */
54 /* Whether xdb commands will be handled. */
57 /* Whether dbx commands will be handled. */
60 /* System root path, used to find libraries etc. */
61 char *gdb_sysroot
= 0;
63 /* GDB datadir, used to store data files. */
64 char *gdb_datadir
= 0;
66 /* Non-zero if GDB_DATADIR was provided on the command line.
67 This doesn't track whether data-directory is set later from the
68 command line, but we don't reread system.gdbinit when that happens. */
69 static int gdb_datadir_provided
= 0;
71 /* If gdb was configured with --with-python=/path,
72 the possibly relocated path to python's lib directory. */
73 char *python_libdir
= 0;
75 struct ui_file
*gdb_stdout
;
76 struct ui_file
*gdb_stderr
;
77 struct ui_file
*gdb_stdlog
;
78 struct ui_file
*gdb_stdin
;
79 /* Target IO streams. */
80 struct ui_file
*gdb_stdtargin
;
81 struct ui_file
*gdb_stdtarg
;
82 struct ui_file
*gdb_stdtargerr
;
84 /* True if --batch or --batch-silent was seen. */
87 /* Support for the --batch-silent option. */
90 /* Support for --return-child-result option.
91 Set the default to -1 to return error in the case
92 that the program does not run or does not complete. */
93 int return_child_result
= 0;
94 int return_child_result_value
= -1;
97 /* GDB as it has been invoked from the command line (i.e. argv[0]). */
98 static char *gdb_program_name
;
100 /* Return read only pointer to GDB_PROGRAM_NAME. */
102 get_gdb_program_name (void)
104 return gdb_program_name
;
107 static void print_gdb_help (struct ui_file
*);
109 /* Set the data-directory parameter to NEW_DATADIR.
110 If NEW_DATADIR is not a directory then a warning is printed.
111 We don't signal an error for backward compatibility. */
114 set_gdb_data_directory (const char *new_datadir
)
118 if (stat (new_datadir
, &st
) < 0)
120 int save_errno
= errno
;
122 fprintf_unfiltered (gdb_stderr
, "Warning: ");
123 print_sys_errmsg (new_datadir
, save_errno
);
125 else if (!S_ISDIR (st
.st_mode
))
126 warning (_("%s is not a directory."), new_datadir
);
129 gdb_datadir
= gdb_realpath (new_datadir
);
131 /* gdb_realpath won't return an absolute path if the path doesn't exist,
132 but we still want to record an absolute path here. If the user entered
133 "../foo" and "../foo" doesn't exist then we'll record $(pwd)/../foo which
134 isn't canonical, but that's ok. */
135 if (!IS_ABSOLUTE_PATH (gdb_datadir
))
137 char *abs_datadir
= gdb_abspath (gdb_datadir
);
140 gdb_datadir
= abs_datadir
;
144 /* Relocate a file or directory. PROGNAME is the name by which gdb
145 was invoked (i.e., argv[0]). INITIAL is the default value for the
146 file or directory. FLAG is true if the value is relocatable, false
147 otherwise. Returns a newly allocated string; this may return NULL
148 under the same conditions as make_relative_prefix. */
151 relocate_path (const char *progname
, const char *initial
, int flag
)
154 return make_relative_prefix (progname
, BINDIR
, initial
);
155 return xstrdup (initial
);
158 /* Like relocate_path, but specifically checks for a directory.
159 INITIAL is relocated according to the rules of relocate_path. If
160 the result is a directory, it is used; otherwise, INITIAL is used.
161 The chosen directory is then canonicalized using lrealpath. This
162 function always returns a newly-allocated string. */
165 relocate_gdb_directory (const char *initial
, int flag
)
169 dir
= relocate_path (gdb_program_name
, initial
, flag
);
174 if (*dir
== '\0' || stat (dir
, &s
) != 0 || !S_ISDIR (s
.st_mode
))
181 dir
= xstrdup (initial
);
183 /* Canonicalize the directory. */
186 char *canon_sysroot
= lrealpath (dir
);
198 /* Compute the locations of init files that GDB should source and
199 return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If
200 there is no system gdbinit (resp. home gdbinit and local gdbinit)
201 to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
202 LOCAL_GDBINIT) is set to NULL. */
204 get_init_files (const char **system_gdbinit
,
205 const char **home_gdbinit
,
206 const char **local_gdbinit
)
208 static const char *sysgdbinit
= NULL
;
209 static char *homeinit
= NULL
;
210 static const char *localinit
= NULL
;
211 static int initialized
= 0;
215 struct stat homebuf
, cwdbuf
, s
;
218 if (SYSTEM_GDBINIT
[0])
220 int datadir_len
= strlen (GDB_DATADIR
);
221 int sys_gdbinit_len
= strlen (SYSTEM_GDBINIT
);
222 char *relocated_sysgdbinit
;
224 /* If SYSTEM_GDBINIT lives in data-directory, and data-directory
225 has been provided, search for SYSTEM_GDBINIT there. */
226 if (gdb_datadir_provided
227 && datadir_len
< sys_gdbinit_len
228 && filename_ncmp (SYSTEM_GDBINIT
, GDB_DATADIR
, datadir_len
) == 0
229 && IS_DIR_SEPARATOR (SYSTEM_GDBINIT
[datadir_len
]))
231 /* Append the part of SYSTEM_GDBINIT that follows GDB_DATADIR
233 char *tmp_sys_gdbinit
= xstrdup (SYSTEM_GDBINIT
+ datadir_len
);
236 for (p
= tmp_sys_gdbinit
; IS_DIR_SEPARATOR (*p
); ++p
)
238 relocated_sysgdbinit
= concat (gdb_datadir
, SLASH_STRING
, p
,
240 xfree (tmp_sys_gdbinit
);
244 relocated_sysgdbinit
= relocate_path (gdb_program_name
,
246 SYSTEM_GDBINIT_RELOCATABLE
);
248 if (relocated_sysgdbinit
&& stat (relocated_sysgdbinit
, &s
) == 0)
249 sysgdbinit
= relocated_sysgdbinit
;
251 xfree (relocated_sysgdbinit
);
254 homedir
= getenv ("HOME");
256 /* If the .gdbinit file in the current directory is the same as
257 the $HOME/.gdbinit file, it should not be sourced. homebuf
258 and cwdbuf are used in that purpose. Make sure that the stats
259 are zero in case one of them fails (this guarantees that they
260 won't match if either exists). */
262 memset (&homebuf
, 0, sizeof (struct stat
));
263 memset (&cwdbuf
, 0, sizeof (struct stat
));
267 homeinit
= xstrprintf ("%s/%s", homedir
, gdbinit
);
268 if (stat (homeinit
, &homebuf
) != 0)
275 if (stat (gdbinit
, &cwdbuf
) == 0)
278 || memcmp ((char *) &homebuf
, (char *) &cwdbuf
,
279 sizeof (struct stat
)))
286 *system_gdbinit
= sysgdbinit
;
287 *home_gdbinit
= homeinit
;
288 *local_gdbinit
= localinit
;
291 /* Call command_loop. If it happens to return, pass that through as a
292 non-zero return status. */
295 captured_command_loop (void *data
)
297 /* Top-level execution commands can be run in the background from
299 interpreter_async
= 1;
301 current_interp_command_loop ();
302 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
303 would clean things up (restoring the cleanup chain) to the state
304 they were just prior to the call. Technically, this means that
305 the do_cleanups() below is redundant. Unfortunately, many FUNCs
306 are not that well behaved. do_cleanups should either be replaced
307 with a do_cleanups call (to cover the problem) or an assertion
308 check to detect bad FUNCs code. */
309 do_cleanups (all_cleanups ());
310 /* If the command_loop returned, normally (rather than threw an
311 error) we try to quit. If the quit is aborted, catch_errors()
312 which called this catch the signal and restart the command
314 quit_command (NULL
, instream
== stdin
);
318 /* Arguments of --command option and its counterpart. */
319 typedef struct cmdarg
{
320 /* Type of this option. */
322 /* Option type -x. */
325 /* Option type -ex. */
328 /* Option type -ix. */
331 /* Option type -iex. */
335 /* Value of this option - filename or the GDB command itself. String memory
336 is not owned by this structure despite it is 'const'. */
340 /* Define type VEC (cmdarg_s). */
341 DEF_VEC_O (cmdarg_s
);
344 captured_main (void *data
)
346 struct captured_main_args
*context
= data
;
347 int argc
= context
->argc
;
348 char **argv
= context
->argv
;
349 static int quiet
= 0;
350 static int set_args
= 0;
351 static int inhibit_home_gdbinit
= 0;
353 /* Pointers to various arguments from command line. */
355 char *execarg
= NULL
;
357 char *corearg
= NULL
;
358 char *pid_or_core_arg
= NULL
;
362 /* These are static so that we can take their address in an
364 static int print_help
;
365 static int print_version
;
366 static int print_configuration
;
368 /* Pointers to all arguments of --command option. */
369 VEC (cmdarg_s
) *cmdarg_vec
= NULL
;
370 struct cmdarg
*cmdarg_p
;
372 /* Indices of all arguments of --directory option. */
374 /* Allocated size. */
376 /* Number of elements used. */
379 /* gdb init files. */
380 const char *system_gdbinit
;
381 const char *home_gdbinit
;
382 const char *local_gdbinit
;
386 struct objfile
*objfile
;
388 struct cleanup
*pre_stat_chain
;
391 /* Set this before calling make_command_stats_cleanup. */
392 lim_at_start
= (char *) sbrk (0);
395 pre_stat_chain
= make_command_stats_cleanup (0);
397 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
398 setlocale (LC_MESSAGES
, "");
400 #if defined (HAVE_SETLOCALE)
401 setlocale (LC_CTYPE
, "");
403 bindtextdomain (PACKAGE
, LOCALEDIR
);
404 textdomain (PACKAGE
);
409 make_cleanup (VEC_cleanup (cmdarg_s
), &cmdarg_vec
);
411 dirarg
= (char **) xmalloc (dirsize
* sizeof (*dirarg
));
415 saved_command_line
= (char *) xmalloc (saved_command_line_size
);
416 saved_command_line
[0] = '\0';
420 /* Ensure stderr is unbuffered. A Cygwin pty or pipe is implemented
421 as a Windows pipe, and Windows buffers on pipes. */
422 setvbuf (stderr
, NULL
, _IONBF
, BUFSIZ
);
425 gdb_stdout
= stdio_fileopen (stdout
);
426 gdb_stderr
= stderr_fileopen ();
428 gdb_stdlog
= gdb_stderr
; /* for moment */
429 gdb_stdtarg
= gdb_stderr
; /* for moment */
430 gdb_stdin
= stdio_fileopen (stdin
);
431 gdb_stdtargerr
= gdb_stderr
; /* for moment */
432 gdb_stdtargin
= gdb_stdin
; /* for moment */
435 /* On Windows, argv[0] is not necessarily set to absolute form when
436 GDB is found along PATH, without which relocation doesn't work. */
437 gdb_program_name
= windows_get_absolute_argv0 (argv
[0]);
439 gdb_program_name
= xstrdup (argv
[0]);
442 if (! getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
)))
443 /* Don't use *_filtered or warning() (which relies on
444 current_target) until after initialize_all_files(). */
445 fprintf_unfiltered (gdb_stderr
,
446 _("%s: warning: error finding "
447 "working directory: %s\n"),
448 argv
[0], safe_strerror (errno
));
450 current_directory
= gdb_dirbuf
;
452 /* Set the sysroot path. */
453 gdb_sysroot
= relocate_gdb_directory (TARGET_SYSTEM_ROOT
,
454 TARGET_SYSTEM_ROOT_RELOCATABLE
);
456 debug_file_directory
= relocate_gdb_directory (DEBUGDIR
,
457 DEBUGDIR_RELOCATABLE
);
459 gdb_datadir
= relocate_gdb_directory (GDB_DATADIR
,
460 GDB_DATADIR_RELOCATABLE
);
462 #ifdef WITH_PYTHON_PATH
464 /* For later use in helping Python find itself. */
465 char *tmp
= concat (WITH_PYTHON_PATH
, SLASH_STRING
, "lib", NULL
);
467 python_libdir
= relocate_gdb_directory (tmp
, PYTHON_PATH_RELOCATABLE
);
473 add_substitute_path_rule (RELOC_SRCDIR
,
474 make_relative_prefix (gdb_program_name
, BINDIR
,
478 /* There will always be an interpreter. Either the one passed into
479 this captured main, or one specified by the user at start up, or
480 the console. Initialize the interpreter to the one requested by
482 interpreter_p
= xstrdup (context
->interpreter_p
);
484 /* Parse arguments and options. */
487 /* When var field is 0, use flag field to record the equivalent
488 short option (or arbitrary numbers starting at 10 for those
489 with no equivalent). */
501 static struct option long_options
[] =
503 {"tui", no_argument
, 0, OPT_TUI
},
504 {"xdb", no_argument
, &xdb_commands
, 1},
505 {"dbx", no_argument
, &dbx_commands
, 1},
506 {"readnow", no_argument
, &readnow_symbol_files
, 1},
507 {"r", no_argument
, &readnow_symbol_files
, 1},
508 {"quiet", no_argument
, &quiet
, 1},
509 {"q", no_argument
, &quiet
, 1},
510 {"silent", no_argument
, &quiet
, 1},
511 {"nh", no_argument
, &inhibit_home_gdbinit
, 1},
512 {"nx", no_argument
, &inhibit_gdbinit
, 1},
513 {"n", no_argument
, &inhibit_gdbinit
, 1},
514 {"batch-silent", no_argument
, 0, 'B'},
515 {"batch", no_argument
, &batch_flag
, 1},
517 /* This is a synonym for "--annotate=1". --annotate is now
518 preferred, but keep this here for a long time because people
519 will be running emacses which use --fullname. */
520 {"fullname", no_argument
, 0, 'f'},
521 {"f", no_argument
, 0, 'f'},
523 {"annotate", required_argument
, 0, OPT_ANNOTATE
},
524 {"help", no_argument
, &print_help
, 1},
525 {"se", required_argument
, 0, OPT_SE
},
526 {"symbols", required_argument
, 0, 's'},
527 {"s", required_argument
, 0, 's'},
528 {"exec", required_argument
, 0, 'e'},
529 {"e", required_argument
, 0, 'e'},
530 {"core", required_argument
, 0, 'c'},
531 {"c", required_argument
, 0, 'c'},
532 {"pid", required_argument
, 0, 'p'},
533 {"p", required_argument
, 0, 'p'},
534 {"command", required_argument
, 0, 'x'},
535 {"eval-command", required_argument
, 0, 'X'},
536 {"version", no_argument
, &print_version
, 1},
537 {"configuration", no_argument
, &print_configuration
, 1},
538 {"x", required_argument
, 0, 'x'},
539 {"ex", required_argument
, 0, 'X'},
540 {"init-command", required_argument
, 0, OPT_IX
},
541 {"init-eval-command", required_argument
, 0, OPT_IEX
},
542 {"ix", required_argument
, 0, OPT_IX
},
543 {"iex", required_argument
, 0, OPT_IEX
},
545 {"tclcommand", required_argument
, 0, 'z'},
546 {"enable-external-editor", no_argument
, 0, 'y'},
547 {"editor-command", required_argument
, 0, 'w'},
549 {"ui", required_argument
, 0, 'i'},
550 {"interpreter", required_argument
, 0, 'i'},
551 {"i", required_argument
, 0, 'i'},
552 {"directory", required_argument
, 0, 'd'},
553 {"d", required_argument
, 0, 'd'},
554 {"data-directory", required_argument
, 0, 'D'},
555 {"D", required_argument
, 0, 'D'},
556 {"cd", required_argument
, 0, OPT_CD
},
557 {"tty", required_argument
, 0, 't'},
558 {"baud", required_argument
, 0, 'b'},
559 {"b", required_argument
, 0, 'b'},
560 {"nw", no_argument
, NULL
, OPT_NOWINDOWS
},
561 {"nowindows", no_argument
, NULL
, OPT_NOWINDOWS
},
562 {"w", no_argument
, NULL
, OPT_WINDOWS
},
563 {"windows", no_argument
, NULL
, OPT_WINDOWS
},
564 {"statistics", no_argument
, 0, OPT_STATISTICS
},
565 {"write", no_argument
, &write_files
, 1},
566 {"args", no_argument
, &set_args
, 1},
567 {"l", required_argument
, 0, 'l'},
568 {"return-child-result", no_argument
, &return_child_result
, 1},
569 {0, no_argument
, 0, 0}
576 c
= getopt_long_only (argc
, argv
, "",
577 long_options
, &option_index
);
578 if (c
== EOF
|| set_args
)
581 /* Long option that takes an argument. */
582 if (c
== 0 && long_options
[option_index
].flag
== 0)
583 c
= long_options
[option_index
].val
;
588 /* Long option that just sets a flag. */
598 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
599 annotation_level
= atoi (optarg
);
602 /* Enable the display of both time and space usage. */
603 set_per_command_time (1);
604 set_per_command_space (1);
607 /* --tui is equivalent to -i=tui. */
609 xfree (interpreter_p
);
610 interpreter_p
= xstrdup (INTERP_TUI
);
612 fprintf_unfiltered (gdb_stderr
,
613 _("%s: TUI mode is not supported\n"),
619 /* FIXME: cagney/2003-03-01: Not sure if this option is
620 actually useful, and if it is, what it should do. */
622 /* --windows is equivalent to -i=insight. */
623 xfree (interpreter_p
);
624 interpreter_p
= xstrdup (INTERP_INSIGHT
);
628 /* -nw is equivalent to -i=console. */
629 xfree (interpreter_p
);
630 interpreter_p
= xstrdup (INTERP_CONSOLE
);
633 annotation_level
= 1;
649 struct cmdarg cmdarg
= { CMDARG_FILE
, optarg
};
651 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
656 struct cmdarg cmdarg
= { CMDARG_COMMAND
, optarg
};
658 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
663 struct cmdarg cmdarg
= { CMDARG_INIT_FILE
, optarg
};
665 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
670 struct cmdarg cmdarg
= { CMDARG_INIT_COMMAND
, optarg
};
672 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
676 batch_flag
= batch_silent
= 1;
677 gdb_stdout
= ui_file_new();
680 if (optarg
[0] == '\0')
682 fprintf_unfiltered (gdb_stderr
,
683 _("%s: empty path for"
684 " `--data-directory'\n"),
688 set_gdb_data_directory (optarg
);
689 gdb_datadir_provided
= 1;
694 extern int gdbtk_test (char *);
696 if (!gdbtk_test (optarg
))
698 fprintf_unfiltered (gdb_stderr
,
699 _("%s: unable to load "
700 "tclcommand file \"%s\""),
707 /* Backwards compatibility only. */
711 /* Set the external editor commands when gdb is farming out files
712 to be edited by another program. */
713 extern char *external_editor_command
;
715 external_editor_command
= xstrdup (optarg
);
720 xfree (interpreter_p
);
721 interpreter_p
= xstrdup (optarg
);
724 dirarg
[ndir
++] = optarg
;
728 dirarg
= (char **) xrealloc ((char *) dirarg
,
729 dirsize
* sizeof (*dirarg
));
743 i
= strtol (optarg
, &p
, 0);
744 if (i
== 0 && p
== optarg
)
746 /* Don't use *_filtered or warning() (which relies on
747 current_target) until after initialize_all_files(). */
751 _("warning: could not set baud rate to `%s'.\n"), optarg
);
761 i
= strtol (optarg
, &p
, 0);
762 if (i
== 0 && p
== optarg
)
764 /* Don't use *_filtered or warning() (which relies on
765 current_target) until after initialize_all_files(). */
767 fprintf_unfiltered (gdb_stderr
,
768 _("warning: could not set "
769 "timeout limit to `%s'.\n"), optarg
);
776 fprintf_unfiltered (gdb_stderr
,
777 _("Use `%s --help' for a "
778 "complete list of options.\n"),
788 /* Initialize all files. Give the interpreter a chance to take
789 control of the console via the deprecated_init_ui_hook (). */
790 gdb_init (gdb_program_name
);
792 /* Now that gdb_init has created the initial inferior, we're in
793 position to set args for that inferior. */
796 /* The remaining options are the command-line options for the
797 inferior. The first one is the sym/exec file, and the rest
801 fprintf_unfiltered (gdb_stderr
,
802 _("%s: `--args' specified but "
803 "no program specified\n"),
807 symarg
= argv
[optind
];
808 execarg
= argv
[optind
];
810 set_inferior_args_vector (argc
- optind
, &argv
[optind
]);
814 /* OK, that's all the options. */
816 /* The first argument, if specified, is the name of the
820 symarg
= argv
[optind
];
821 execarg
= argv
[optind
];
825 /* If the user hasn't already specified a PID or the name of a
826 core file, then a second optional argument is allowed. If
827 present, this argument should be interpreted as either a
828 PID or a core file, whichever works. */
829 if (pidarg
== NULL
&& corearg
== NULL
&& optind
< argc
)
831 pid_or_core_arg
= argv
[optind
];
835 /* Any argument left on the command line is unexpected and
836 will be ignored. Inform the user. */
838 fprintf_unfiltered (gdb_stderr
,
839 _("Excess command line "
840 "arguments ignored. (%s%s)\n"),
842 (optind
== argc
- 1) ? "" : " ...");
845 /* Lookup gdbinit files. Note that the gdbinit file name may be
846 overriden during file initialization, so get_init_files should be
847 called after gdb_init. */
848 get_init_files (&system_gdbinit
, &home_gdbinit
, &local_gdbinit
);
850 /* Do these (and anything which might call wrap_here or *_filtered)
851 after initialize_all_files() but before the interpreter has been
852 installed. Otherwize the help/version messages will be eaten by
853 the interpreter's output handler. */
857 print_gdb_version (gdb_stdout
);
859 printf_filtered ("\n");
865 print_gdb_help (gdb_stdout
);
866 fputs_unfiltered ("\n", gdb_stdout
);
870 if (print_configuration
)
872 print_gdb_configuration (gdb_stdout
);
874 printf_filtered ("\n");
878 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
879 GDB retain the old MI1 interpreter startup behavior. Output the
880 copyright message before the interpreter is installed. That way
881 it isn't encapsulated in MI output. */
882 if (!quiet
&& strcmp (interpreter_p
, INTERP_MI1
) == 0)
884 /* Print all the junk at the top, with trailing "..." if we are
885 about to read a symbol file (possibly slowly). */
886 print_gdb_version (gdb_stdout
);
888 printf_filtered ("..");
890 printf_filtered ("\n");
891 gdb_flush (gdb_stdout
); /* Force to screen during slow
895 /* Install the default UI. All the interpreters should have had a
896 look at things by now. Initialize the default interpreter. */
900 struct interp
*interp
= interp_lookup (interpreter_p
);
903 error (_("Interpreter `%s' unrecognized"), interpreter_p
);
905 if (!interp_set (interp
, 1))
907 fprintf_unfiltered (gdb_stderr
,
908 "Interpreter `%s' failed to initialize.\n",
914 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
915 GDB retain the old MI1 interpreter startup behavior. Output the
916 copyright message after the interpreter is installed when it is
917 any sane interpreter. */
918 if (!quiet
&& !current_interp_named_p (INTERP_MI1
))
920 /* Print all the junk at the top, with trailing "..." if we are
921 about to read a symbol file (possibly slowly). */
922 print_gdb_version (gdb_stdout
);
924 printf_filtered ("..");
926 printf_filtered ("\n");
927 gdb_flush (gdb_stdout
); /* Force to screen during slow
931 /* Set off error and warning messages with a blank line. */
932 warning_pre_print
= _("\nwarning: ");
934 /* Read and execute the system-wide gdbinit file, if it exists.
935 This is done *before* all the command line arguments are
936 processed; it sets global parameters, which are independent of
937 what file you are debugging or what directory you are in. */
938 if (system_gdbinit
&& !inhibit_gdbinit
)
939 catch_command_errors_const (source_script
, system_gdbinit
,
942 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
943 *before* all the command line arguments are processed; it sets
944 global parameters, which are independent of what file you are
945 debugging or what directory you are in. */
947 if (home_gdbinit
&& !inhibit_gdbinit
&& !inhibit_home_gdbinit
)
948 catch_command_errors_const (source_script
,
949 home_gdbinit
, 0, RETURN_MASK_ALL
);
951 /* Process '-ix' and '-iex' options early. */
952 for (i
= 0; VEC_iterate (cmdarg_s
, cmdarg_vec
, i
, cmdarg_p
); i
++)
953 switch (cmdarg_p
->type
)
955 case CMDARG_INIT_FILE
:
956 catch_command_errors_const (source_script
, cmdarg_p
->string
,
957 !batch_flag
, RETURN_MASK_ALL
);
959 case CMDARG_INIT_COMMAND
:
960 catch_command_errors (execute_command
, cmdarg_p
->string
,
961 !batch_flag
, RETURN_MASK_ALL
);
965 /* Now perform all the actions indicated by the arguments. */
968 catch_command_errors (cd_command
, cdarg
, 0, RETURN_MASK_ALL
);
971 for (i
= 0; i
< ndir
; i
++)
972 catch_command_errors (directory_switch
, dirarg
[i
], 0, RETURN_MASK_ALL
);
975 /* Skip auto-loading section-specified scripts until we've sourced
976 local_gdbinit (which is often used to augment the source search
978 save_auto_load
= global_auto_load
;
979 global_auto_load
= 0;
983 && strcmp (execarg
, symarg
) == 0)
985 /* The exec file and the symbol-file are the same. If we can't
986 open it, better only print one error message.
987 catch_command_errors returns non-zero on success! */
988 if (catch_command_errors (exec_file_attach
, execarg
,
989 !batch_flag
, RETURN_MASK_ALL
))
990 catch_command_errors_const (symbol_file_add_main
, symarg
,
991 !batch_flag
, RETURN_MASK_ALL
);
996 catch_command_errors (exec_file_attach
, execarg
,
997 !batch_flag
, RETURN_MASK_ALL
);
999 catch_command_errors_const (symbol_file_add_main
, symarg
,
1000 !batch_flag
, RETURN_MASK_ALL
);
1003 if (corearg
&& pidarg
)
1004 error (_("Can't attach to process and specify "
1005 "a core file at the same time."));
1007 if (corearg
!= NULL
)
1008 catch_command_errors (core_file_command
, corearg
,
1009 !batch_flag
, RETURN_MASK_ALL
);
1010 else if (pidarg
!= NULL
)
1011 catch_command_errors (attach_command
, pidarg
,
1012 !batch_flag
, RETURN_MASK_ALL
);
1013 else if (pid_or_core_arg
)
1015 /* The user specified 'gdb program pid' or gdb program core'.
1016 If pid_or_core_arg's first character is a digit, try attach
1017 first and then corefile. Otherwise try just corefile. */
1019 if (isdigit (pid_or_core_arg
[0]))
1021 if (catch_command_errors (attach_command
, pid_or_core_arg
,
1022 !batch_flag
, RETURN_MASK_ALL
) == 0)
1023 catch_command_errors (core_file_command
, pid_or_core_arg
,
1024 !batch_flag
, RETURN_MASK_ALL
);
1026 else /* Can't be a pid, better be a corefile. */
1027 catch_command_errors (core_file_command
, pid_or_core_arg
,
1028 !batch_flag
, RETURN_MASK_ALL
);
1032 set_inferior_io_terminal (ttyarg
);
1034 /* Error messages should no longer be distinguished with extra output. */
1035 warning_pre_print
= _("warning: ");
1037 /* Read the .gdbinit file in the current directory, *if* it isn't
1038 the same as the $HOME/.gdbinit file (it should exist, also). */
1041 auto_load_local_gdbinit_pathname
= gdb_realpath (local_gdbinit
);
1043 if (!inhibit_gdbinit
&& auto_load_local_gdbinit
1044 && file_is_auto_load_safe (local_gdbinit
,
1045 _("auto-load: Loading .gdbinit "
1049 auto_load_local_gdbinit_loaded
= 1;
1051 catch_command_errors_const (source_script
, local_gdbinit
, 0,
1056 /* Now that all .gdbinit's have been read and all -d options have been
1057 processed, we can read any scripts mentioned in SYMARG.
1058 We wait until now because it is common to add to the source search
1059 path in local_gdbinit. */
1060 global_auto_load
= save_auto_load
;
1061 ALL_OBJFILES (objfile
)
1062 load_auto_scripts_for_objfile (objfile
);
1064 /* Process '-x' and '-ex' options. */
1065 for (i
= 0; VEC_iterate (cmdarg_s
, cmdarg_vec
, i
, cmdarg_p
); i
++)
1066 switch (cmdarg_p
->type
)
1069 catch_command_errors_const (source_script
, cmdarg_p
->string
,
1070 !batch_flag
, RETURN_MASK_ALL
);
1072 case CMDARG_COMMAND
:
1073 catch_command_errors (execute_command
, cmdarg_p
->string
,
1074 !batch_flag
, RETURN_MASK_ALL
);
1078 /* Read in the old history after all the command files have been
1084 /* We have hit the end of the batch file. */
1085 quit_force (NULL
, 0);
1088 /* Show time and/or space usage. */
1089 do_cleanups (pre_stat_chain
);
1091 /* NOTE: cagney/1999-11-07: There is probably no reason for not
1092 moving this loop and the code found in captured_command_loop()
1093 into the command_loop() proper. The main thing holding back that
1094 change - SET_TOP_LEVEL() - has been eliminated. */
1097 catch_errors (captured_command_loop
, 0, "", RETURN_MASK_ALL
);
1099 /* No exit -- exit is through quit_command. */
1103 gdb_main (struct captured_main_args
*args
)
1105 catch_errors (captured_main
, args
, "", RETURN_MASK_ALL
);
1106 /* The only way to end up here is by an error (normal exit is
1107 handled by quit_force()), hence always return an error status. */
1112 /* Don't use *_filtered for printing help. We don't want to prompt
1113 for continue no matter how small the screen or how much we're going
1117 print_gdb_help (struct ui_file
*stream
)
1119 const char *system_gdbinit
;
1120 const char *home_gdbinit
;
1121 const char *local_gdbinit
;
1123 get_init_files (&system_gdbinit
, &home_gdbinit
, &local_gdbinit
);
1125 /* Note: The options in the list below are only approximately sorted
1126 in the alphabetical order, so as to group closely related options
1128 fputs_unfiltered (_("\
1129 This is the GNU debugger. Usage:\n\n\
1130 gdb [options] [executable-file [core-file or process-id]]\n\
1131 gdb [options] --args executable-file [inferior-arguments ...]\n\n\
1133 fputs_unfiltered (_("\
1134 Selection of debuggee and its files:\n\n\
1135 --args Arguments after executable-file are passed to inferior\n\
1136 --core=COREFILE Analyze the core dump COREFILE.\n\
1137 --exec=EXECFILE Use EXECFILE as the executable.\n\
1138 --pid=PID Attach to running process PID.\n\
1139 --directory=DIR Search for source files in DIR.\n\
1140 --se=FILE Use FILE as symbol file and executable file.\n\
1141 --symbols=SYMFILE Read symbols from SYMFILE.\n\
1142 --readnow Fully read symbol files on first access.\n\
1143 --write Set writing into executable and core files.\n\n\
1145 fputs_unfiltered (_("\
1146 Initial commands and command files:\n\n\
1147 --command=FILE, -x Execute GDB commands from FILE.\n\
1148 --init-command=FILE, -ix\n\
1149 Like -x but execute commands before loading inferior.\n\
1150 --eval-command=COMMAND, -ex\n\
1151 Execute a single GDB command.\n\
1152 May be used multiple times and in conjunction\n\
1154 --init-eval-command=COMMAND, -iex\n\
1155 Like -ex but before loading inferior.\n\
1156 --nh Do not read ~/.gdbinit.\n\
1157 --nx Do not read any .gdbinit files in any directory.\n\n\
1159 fputs_unfiltered (_("\
1160 Output and user interface control:\n\n\
1161 --fullname Output information used by emacs-GDB interface.\n\
1162 --interpreter=INTERP\n\
1163 Select a specific interpreter / user interface\n\
1164 --tty=TTY Use TTY for input/output by the program being debugged.\n\
1165 -w Use the GUI interface.\n\
1166 --nw Do not use the GUI interface.\n\
1169 fputs_unfiltered (_("\
1170 --tui Use a terminal user interface.\n\
1173 fputs_unfiltered (_("\
1174 --dbx DBX compatibility mode.\n\
1175 --xdb XDB compatibility mode.\n\
1176 -q, --quiet, --silent\n\
1177 Do not print version number on startup.\n\n\
1179 fputs_unfiltered (_("\
1180 Operating modes:\n\n\
1181 --batch Exit after processing options.\n\
1182 --batch-silent Like --batch, but suppress all gdb stdout output.\n\
1183 --return-child-result\n\
1184 GDB exit code will be the child's exit code.\n\
1185 --configuration Print details about GDB configuration and then exit.\n\
1186 --help Print this message and then exit.\n\
1187 --version Print version information and then exit.\n\n\
1188 Remote debugging options:\n\n\
1189 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
1190 -l TIMEOUT Set timeout in seconds for remote debugging.\n\n\
1192 --cd=DIR Change current directory to DIR.\n\
1193 --data-directory=DIR, -D\n\
1194 Set GDB's data-directory to DIR.\n\
1196 fputs_unfiltered (_("\n\
1197 At startup, GDB reads the following init files and executes their commands:\n\
1200 fprintf_unfiltered (stream
, _("\
1201 * system-wide init file: %s\n\
1202 "), system_gdbinit
);
1204 fprintf_unfiltered (stream
, _("\
1205 * user-specific init file: %s\n\
1208 fprintf_unfiltered (stream
, _("\
1209 * local init file (see also 'set auto-load local-gdbinit'): ./%s\n\
1211 fputs_unfiltered (_("\n\
1212 For more information, type \"help\" from within GDB, or consult the\n\
1213 GDB manual (available as on-line info or a printed manual).\n\
1215 if (REPORT_BUGS_TO
[0] && stream
== gdb_stdout
)
1216 fprintf_unfiltered (stream
, _("\
1217 Report bugs to \"%s\".\n\
1218 "), REPORT_BUGS_TO
);