1 /* Top level stuff for GDB, the GNU debugger.
3 Copyright (C) 1986-2016 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/>. */
28 #include <sys/types.h>
31 #include "event-loop.h"
37 #include "cli/cli-cmds.h"
39 #include "auto-load.h"
42 #include "filenames.h"
43 #include "filestuff.h"
45 #include "event-top.h"
48 /* The selected interpreter. This will be used as a set command
49 variable, so it should always be malloc'ed - since
50 do_setshow_command will free it. */
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 /* Non-zero if GDB_DATADIR was provided on the command line.
63 This doesn't track whether data-directory is set later from the
64 command line, but we don't reread system.gdbinit when that happens. */
65 static int gdb_datadir_provided
= 0;
67 /* If gdb was configured with --with-python=/path,
68 the possibly relocated path to python's lib directory. */
69 char *python_libdir
= 0;
71 struct ui_file
*gdb_stdout
;
72 struct ui_file
*gdb_stderr
;
73 struct ui_file
*gdb_stdlog
;
74 struct ui_file
*gdb_stdin
;
75 /* Target IO streams. */
76 struct ui_file
*gdb_stdtargin
;
77 struct ui_file
*gdb_stdtarg
;
78 struct ui_file
*gdb_stdtargerr
;
80 /* True if --batch or --batch-silent was seen. */
83 /* Support for the --batch-silent option. */
86 /* Support for --return-child-result option.
87 Set the default to -1 to return error in the case
88 that the program does not run or does not complete. */
89 int return_child_result
= 0;
90 int return_child_result_value
= -1;
93 /* GDB as it has been invoked from the command line (i.e. argv[0]). */
94 static char *gdb_program_name
;
96 /* Return read only pointer to GDB_PROGRAM_NAME. */
98 get_gdb_program_name (void)
100 return gdb_program_name
;
103 static void print_gdb_help (struct ui_file
*);
105 /* Set the data-directory parameter to NEW_DATADIR.
106 If NEW_DATADIR is not a directory then a warning is printed.
107 We don't signal an error for backward compatibility. */
110 set_gdb_data_directory (const char *new_datadir
)
114 if (stat (new_datadir
, &st
) < 0)
116 int save_errno
= errno
;
118 fprintf_unfiltered (gdb_stderr
, "Warning: ");
119 print_sys_errmsg (new_datadir
, save_errno
);
121 else if (!S_ISDIR (st
.st_mode
))
122 warning (_("%s is not a directory."), new_datadir
);
125 gdb_datadir
= gdb_realpath (new_datadir
);
127 /* gdb_realpath won't return an absolute path if the path doesn't exist,
128 but we still want to record an absolute path here. If the user entered
129 "../foo" and "../foo" doesn't exist then we'll record $(pwd)/../foo which
130 isn't canonical, but that's ok. */
131 if (!IS_ABSOLUTE_PATH (gdb_datadir
))
133 char *abs_datadir
= gdb_abspath (gdb_datadir
);
136 gdb_datadir
= abs_datadir
;
140 /* Relocate a file or directory. PROGNAME is the name by which gdb
141 was invoked (i.e., argv[0]). INITIAL is the default value for the
142 file or directory. FLAG is true if the value is relocatable, false
143 otherwise. Returns a newly allocated string; this may return NULL
144 under the same conditions as make_relative_prefix. */
147 relocate_path (const char *progname
, const char *initial
, int flag
)
150 return make_relative_prefix (progname
, BINDIR
, initial
);
151 return xstrdup (initial
);
154 /* Like relocate_path, but specifically checks for a directory.
155 INITIAL is relocated according to the rules of relocate_path. If
156 the result is a directory, it is used; otherwise, INITIAL is used.
157 The chosen directory is then canonicalized using lrealpath. This
158 function always returns a newly-allocated string. */
161 relocate_gdb_directory (const char *initial
, int flag
)
165 dir
= relocate_path (gdb_program_name
, initial
, flag
);
170 if (*dir
== '\0' || stat (dir
, &s
) != 0 || !S_ISDIR (s
.st_mode
))
177 dir
= xstrdup (initial
);
179 /* Canonicalize the directory. */
182 char *canon_sysroot
= lrealpath (dir
);
194 /* Compute the locations of init files that GDB should source and
195 return them in SYSTEM_GDBINIT, HOME_GDBINIT, LOCAL_GDBINIT. If
196 there is no system gdbinit (resp. home gdbinit and local gdbinit)
197 to be loaded, then SYSTEM_GDBINIT (resp. HOME_GDBINIT and
198 LOCAL_GDBINIT) is set to NULL. */
200 get_init_files (const char **system_gdbinit
,
201 const char **home_gdbinit
,
202 const char **local_gdbinit
)
204 static const char *sysgdbinit
= NULL
;
205 static char *homeinit
= NULL
;
206 static const char *localinit
= NULL
;
207 static int initialized
= 0;
211 struct stat homebuf
, cwdbuf
, s
;
214 if (SYSTEM_GDBINIT
[0])
216 int datadir_len
= strlen (GDB_DATADIR
);
217 int sys_gdbinit_len
= strlen (SYSTEM_GDBINIT
);
218 char *relocated_sysgdbinit
;
220 /* If SYSTEM_GDBINIT lives in data-directory, and data-directory
221 has been provided, search for SYSTEM_GDBINIT there. */
222 if (gdb_datadir_provided
223 && datadir_len
< sys_gdbinit_len
224 && filename_ncmp (SYSTEM_GDBINIT
, GDB_DATADIR
, datadir_len
) == 0
225 && IS_DIR_SEPARATOR (SYSTEM_GDBINIT
[datadir_len
]))
227 /* Append the part of SYSTEM_GDBINIT that follows GDB_DATADIR
229 char *tmp_sys_gdbinit
= xstrdup (SYSTEM_GDBINIT
+ datadir_len
);
232 for (p
= tmp_sys_gdbinit
; IS_DIR_SEPARATOR (*p
); ++p
)
234 relocated_sysgdbinit
= concat (gdb_datadir
, SLASH_STRING
, p
,
236 xfree (tmp_sys_gdbinit
);
240 relocated_sysgdbinit
= relocate_path (gdb_program_name
,
242 SYSTEM_GDBINIT_RELOCATABLE
);
244 if (relocated_sysgdbinit
&& stat (relocated_sysgdbinit
, &s
) == 0)
245 sysgdbinit
= relocated_sysgdbinit
;
247 xfree (relocated_sysgdbinit
);
250 homedir
= getenv ("HOME");
252 /* If the .gdbinit file in the current directory is the same as
253 the $HOME/.gdbinit file, it should not be sourced. homebuf
254 and cwdbuf are used in that purpose. Make sure that the stats
255 are zero in case one of them fails (this guarantees that they
256 won't match if either exists). */
258 memset (&homebuf
, 0, sizeof (struct stat
));
259 memset (&cwdbuf
, 0, sizeof (struct stat
));
263 homeinit
= xstrprintf ("%s/%s", homedir
, gdbinit
);
264 if (stat (homeinit
, &homebuf
) != 0)
271 if (stat (gdbinit
, &cwdbuf
) == 0)
274 || memcmp ((char *) &homebuf
, (char *) &cwdbuf
,
275 sizeof (struct stat
)))
282 *system_gdbinit
= sysgdbinit
;
283 *home_gdbinit
= homeinit
;
284 *local_gdbinit
= localinit
;
287 /* Try to set up an alternate signal stack for SIGSEGV handlers.
288 This allows us to handle SIGSEGV signals generated when the
289 normal process stack is exhausted. If this stack is not set
290 up (sigaltstack is unavailable or fails) and a SIGSEGV is
291 generated when the normal stack is exhausted then the program
292 will behave as though no SIGSEGV handler was installed. */
295 setup_alternate_signal_stack (void)
297 #ifdef HAVE_SIGALTSTACK
300 ss
.ss_sp
= xmalloc (SIGSTKSZ
);
301 ss
.ss_size
= SIGSTKSZ
;
304 sigaltstack(&ss
, NULL
);
308 /* Call command_loop. If it happens to return, pass that through as a
309 non-zero return status. */
312 captured_command_loop (void *data
)
314 /* Top-level execution commands can be run in the background from
316 interpreter_async
= 1;
318 current_interp_command_loop ();
319 /* FIXME: cagney/1999-11-05: A correct command_loop() implementaton
320 would clean things up (restoring the cleanup chain) to the state
321 they were just prior to the call. Technically, this means that
322 the do_cleanups() below is redundant. Unfortunately, many FUNCs
323 are not that well behaved. do_cleanups should either be replaced
324 with a do_cleanups call (to cover the problem) or an assertion
325 check to detect bad FUNCs code. */
326 do_cleanups (all_cleanups ());
327 /* If the command_loop returned, normally (rather than threw an
328 error) we try to quit. If the quit is aborted, catch_errors()
329 which called this catch the signal and restart the command
331 quit_command (NULL
, instream
== stdin
);
335 /* Handle command errors thrown from within
336 catch_command_errors/catch_command_errors_const. */
339 handle_command_errors (struct gdb_exception e
)
343 exception_print (gdb_stderr
, e
);
345 /* If any exception escaped to here, we better enable stdin.
346 Otherwise, any command that calls async_disable_stdin, and
347 then throws, will leave stdin inoperable. */
348 async_enable_stdin ();
354 /* Type of the command callback passed to catch_command_errors. */
356 typedef void (catch_command_errors_ftype
) (char *, int);
358 /* Wrap calls to commands run before the event loop is started. */
361 catch_command_errors (catch_command_errors_ftype
*command
,
362 char *arg
, int from_tty
)
366 int was_sync
= sync_execution
;
368 command (arg
, from_tty
);
370 maybe_wait_sync_command_done (was_sync
);
372 CATCH (e
, RETURN_MASK_ALL
)
374 return handle_command_errors (e
);
381 /* Type of the command callback passed to catch_command_errors_const. */
383 typedef void (catch_command_errors_const_ftype
) (const char *, int);
385 /* Like catch_command_errors, but works with const command and args. */
388 catch_command_errors_const (catch_command_errors_const_ftype
*command
,
389 const char *arg
, int from_tty
)
393 int was_sync
= sync_execution
;
395 command (arg
, from_tty
);
397 maybe_wait_sync_command_done (was_sync
);
399 CATCH (e
, RETURN_MASK_ALL
)
401 return handle_command_errors (e
);
408 /* Type of this option. */
411 /* Option type -x. */
414 /* Option type -ex. */
417 /* Option type -ix. */
420 /* Option type -iex. */
424 /* Arguments of --command option and its counterpart. */
425 typedef struct cmdarg
{
426 /* Type of this option. */
427 enum cmdarg_kind type
;
429 /* Value of this option - filename or the GDB command itself. String memory
430 is not owned by this structure despite it is 'const'. */
434 /* Define type VEC (cmdarg_s). */
435 DEF_VEC_O (cmdarg_s
);
438 captured_main (void *data
)
440 struct captured_main_args
*context
= (struct captured_main_args
*) data
;
441 int argc
= context
->argc
;
442 char **argv
= context
->argv
;
443 static int quiet
= 0;
444 static int set_args
= 0;
445 static int inhibit_home_gdbinit
= 0;
447 /* Pointers to various arguments from command line. */
449 char *execarg
= NULL
;
451 char *corearg
= NULL
;
452 char *pid_or_core_arg
= NULL
;
456 /* These are static so that we can take their address in an
458 static int print_help
;
459 static int print_version
;
460 static int print_configuration
;
462 /* Pointers to all arguments of --command option. */
463 VEC (cmdarg_s
) *cmdarg_vec
= NULL
;
464 struct cmdarg
*cmdarg_p
;
466 /* Indices of all arguments of --directory option. */
468 /* Allocated size. */
470 /* Number of elements used. */
473 /* gdb init files. */
474 const char *system_gdbinit
;
475 const char *home_gdbinit
;
476 const char *local_gdbinit
;
480 struct objfile
*objfile
;
482 struct cleanup
*pre_stat_chain
;
485 /* Set this before calling make_command_stats_cleanup. */
486 lim_at_start
= (char *) sbrk (0);
489 pre_stat_chain
= make_command_stats_cleanup (0);
491 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
492 setlocale (LC_MESSAGES
, "");
494 #if defined (HAVE_SETLOCALE)
495 setlocale (LC_CTYPE
, "");
497 bindtextdomain (PACKAGE
, LOCALEDIR
);
498 textdomain (PACKAGE
);
503 make_cleanup (VEC_cleanup (cmdarg_s
), &cmdarg_vec
);
505 dirarg
= (char **) xmalloc (dirsize
* sizeof (*dirarg
));
509 saved_command_line
= (char *) xstrdup ("");
513 /* Ensure stderr is unbuffered. A Cygwin pty or pipe is implemented
514 as a Windows pipe, and Windows buffers on pipes. */
515 setvbuf (stderr
, NULL
, _IONBF
, BUFSIZ
);
518 gdb_stdout
= stdio_fileopen (stdout
);
519 gdb_stderr
= stderr_fileopen ();
521 gdb_stdlog
= gdb_stderr
; /* for moment */
522 gdb_stdtarg
= gdb_stderr
; /* for moment */
523 gdb_stdin
= stdio_fileopen (stdin
);
524 gdb_stdtargerr
= gdb_stderr
; /* for moment */
525 gdb_stdtargin
= gdb_stdin
; /* for moment */
528 /* On Windows, argv[0] is not necessarily set to absolute form when
529 GDB is found along PATH, without which relocation doesn't work. */
530 gdb_program_name
= windows_get_absolute_argv0 (argv
[0]);
532 gdb_program_name
= xstrdup (argv
[0]);
535 /* Prefix warning messages with the command name. */
536 warning_pre_print
= xstrprintf ("%s: warning: ", gdb_program_name
);
538 if (! getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
)))
539 perror_warning_with_name (_("error finding working directory"));
541 current_directory
= gdb_dirbuf
;
543 /* Set the sysroot path. */
544 gdb_sysroot
= relocate_gdb_directory (TARGET_SYSTEM_ROOT
,
545 TARGET_SYSTEM_ROOT_RELOCATABLE
);
547 if (gdb_sysroot
== NULL
|| *gdb_sysroot
== '\0')
550 gdb_sysroot
= xstrdup (TARGET_SYSROOT_PREFIX
);
553 debug_file_directory
= relocate_gdb_directory (DEBUGDIR
,
554 DEBUGDIR_RELOCATABLE
);
556 gdb_datadir
= relocate_gdb_directory (GDB_DATADIR
,
557 GDB_DATADIR_RELOCATABLE
);
559 #ifdef WITH_PYTHON_PATH
561 /* For later use in helping Python find itself. */
562 char *tmp
= concat (WITH_PYTHON_PATH
, SLASH_STRING
, "lib", NULL
);
564 python_libdir
= relocate_gdb_directory (tmp
, PYTHON_PATH_RELOCATABLE
);
570 add_substitute_path_rule (RELOC_SRCDIR
,
571 make_relative_prefix (gdb_program_name
, BINDIR
,
575 /* There will always be an interpreter. Either the one passed into
576 this captured main, or one specified by the user at start up, or
577 the console. Initialize the interpreter to the one requested by
579 interpreter_p
= xstrdup (context
->interpreter_p
);
581 /* Parse arguments and options. */
584 /* When var field is 0, use flag field to record the equivalent
585 short option (or arbitrary numbers starting at 10 for those
586 with no equivalent). */
598 static struct option long_options
[] =
600 {"tui", no_argument
, 0, OPT_TUI
},
601 {"dbx", no_argument
, &dbx_commands
, 1},
602 {"readnow", no_argument
, &readnow_symbol_files
, 1},
603 {"r", no_argument
, &readnow_symbol_files
, 1},
604 {"quiet", no_argument
, &quiet
, 1},
605 {"q", no_argument
, &quiet
, 1},
606 {"silent", no_argument
, &quiet
, 1},
607 {"nh", no_argument
, &inhibit_home_gdbinit
, 1},
608 {"nx", no_argument
, &inhibit_gdbinit
, 1},
609 {"n", no_argument
, &inhibit_gdbinit
, 1},
610 {"batch-silent", no_argument
, 0, 'B'},
611 {"batch", no_argument
, &batch_flag
, 1},
613 /* This is a synonym for "--annotate=1". --annotate is now
614 preferred, but keep this here for a long time because people
615 will be running emacses which use --fullname. */
616 {"fullname", no_argument
, 0, 'f'},
617 {"f", no_argument
, 0, 'f'},
619 {"annotate", required_argument
, 0, OPT_ANNOTATE
},
620 {"help", no_argument
, &print_help
, 1},
621 {"se", required_argument
, 0, OPT_SE
},
622 {"symbols", required_argument
, 0, 's'},
623 {"s", required_argument
, 0, 's'},
624 {"exec", required_argument
, 0, 'e'},
625 {"e", required_argument
, 0, 'e'},
626 {"core", required_argument
, 0, 'c'},
627 {"c", required_argument
, 0, 'c'},
628 {"pid", required_argument
, 0, 'p'},
629 {"p", required_argument
, 0, 'p'},
630 {"command", required_argument
, 0, 'x'},
631 {"eval-command", required_argument
, 0, 'X'},
632 {"version", no_argument
, &print_version
, 1},
633 {"configuration", no_argument
, &print_configuration
, 1},
634 {"x", required_argument
, 0, 'x'},
635 {"ex", required_argument
, 0, 'X'},
636 {"init-command", required_argument
, 0, OPT_IX
},
637 {"init-eval-command", required_argument
, 0, OPT_IEX
},
638 {"ix", required_argument
, 0, OPT_IX
},
639 {"iex", required_argument
, 0, OPT_IEX
},
641 {"tclcommand", required_argument
, 0, 'z'},
642 {"enable-external-editor", no_argument
, 0, 'y'},
643 {"editor-command", required_argument
, 0, 'w'},
645 {"ui", required_argument
, 0, 'i'},
646 {"interpreter", required_argument
, 0, 'i'},
647 {"i", required_argument
, 0, 'i'},
648 {"directory", required_argument
, 0, 'd'},
649 {"d", required_argument
, 0, 'd'},
650 {"data-directory", required_argument
, 0, 'D'},
651 {"D", required_argument
, 0, 'D'},
652 {"cd", required_argument
, 0, OPT_CD
},
653 {"tty", required_argument
, 0, 't'},
654 {"baud", required_argument
, 0, 'b'},
655 {"b", required_argument
, 0, 'b'},
656 {"nw", no_argument
, NULL
, OPT_NOWINDOWS
},
657 {"nowindows", no_argument
, NULL
, OPT_NOWINDOWS
},
658 {"w", no_argument
, NULL
, OPT_WINDOWS
},
659 {"windows", no_argument
, NULL
, OPT_WINDOWS
},
660 {"statistics", no_argument
, 0, OPT_STATISTICS
},
661 {"write", no_argument
, &write_files
, 1},
662 {"args", no_argument
, &set_args
, 1},
663 {"l", required_argument
, 0, 'l'},
664 {"return-child-result", no_argument
, &return_child_result
, 1},
665 {0, no_argument
, 0, 0}
672 c
= getopt_long_only (argc
, argv
, "",
673 long_options
, &option_index
);
674 if (c
== EOF
|| set_args
)
677 /* Long option that takes an argument. */
678 if (c
== 0 && long_options
[option_index
].flag
== 0)
679 c
= long_options
[option_index
].val
;
684 /* Long option that just sets a flag. */
694 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
695 annotation_level
= atoi (optarg
);
698 /* Enable the display of both time and space usage. */
699 set_per_command_time (1);
700 set_per_command_space (1);
703 /* --tui is equivalent to -i=tui. */
705 xfree (interpreter_p
);
706 interpreter_p
= xstrdup (INTERP_TUI
);
708 error (_("%s: TUI mode is not supported"), gdb_program_name
);
712 /* FIXME: cagney/2003-03-01: Not sure if this option is
713 actually useful, and if it is, what it should do. */
715 /* --windows is equivalent to -i=insight. */
716 xfree (interpreter_p
);
717 interpreter_p
= xstrdup (INTERP_INSIGHT
);
721 /* -nw is equivalent to -i=console. */
722 xfree (interpreter_p
);
723 interpreter_p
= xstrdup (INTERP_CONSOLE
);
726 annotation_level
= 1;
742 struct cmdarg cmdarg
= { CMDARG_FILE
, optarg
};
744 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
749 struct cmdarg cmdarg
= { CMDARG_COMMAND
, optarg
};
751 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
756 struct cmdarg cmdarg
= { CMDARG_INIT_FILE
, optarg
};
758 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
763 struct cmdarg cmdarg
= { CMDARG_INIT_COMMAND
, optarg
};
765 VEC_safe_push (cmdarg_s
, cmdarg_vec
, &cmdarg
);
769 batch_flag
= batch_silent
= 1;
770 gdb_stdout
= ui_file_new();
773 if (optarg
[0] == '\0')
774 error (_("%s: empty path for `--data-directory'"),
776 set_gdb_data_directory (optarg
);
777 gdb_datadir_provided
= 1;
782 extern int gdbtk_test (char *);
784 if (!gdbtk_test (optarg
))
785 error (_("%s: unable to load tclcommand file \"%s\""),
786 gdb_program_name
, optarg
);
790 /* Backwards compatibility only. */
794 /* Set the external editor commands when gdb is farming out files
795 to be edited by another program. */
796 extern char *external_editor_command
;
798 external_editor_command
= xstrdup (optarg
);
803 xfree (interpreter_p
);
804 interpreter_p
= xstrdup (optarg
);
807 dirarg
[ndir
++] = optarg
;
811 dirarg
= (char **) xrealloc ((char *) dirarg
,
812 dirsize
* sizeof (*dirarg
));
826 i
= strtol (optarg
, &p
, 0);
827 if (i
== 0 && p
== optarg
)
828 warning (_("could not set baud rate to `%s'."),
839 i
= strtol (optarg
, &p
, 0);
840 if (i
== 0 && p
== optarg
)
841 warning (_("could not set timeout limit to `%s'."),
849 error (_("Use `%s --help' for a complete list of options."),
858 /* Try to set up an alternate signal stack for SIGSEGV handlers. */
859 setup_alternate_signal_stack ();
861 /* Initialize all files. */
862 gdb_init (gdb_program_name
);
864 /* Now that gdb_init has created the initial inferior, we're in
865 position to set args for that inferior. */
868 /* The remaining options are the command-line options for the
869 inferior. The first one is the sym/exec file, and the rest
872 error (_("%s: `--args' specified but no program specified"),
875 symarg
= argv
[optind
];
876 execarg
= argv
[optind
];
878 set_inferior_args_vector (argc
- optind
, &argv
[optind
]);
882 /* OK, that's all the options. */
884 /* The first argument, if specified, is the name of the
888 symarg
= argv
[optind
];
889 execarg
= argv
[optind
];
893 /* If the user hasn't already specified a PID or the name of a
894 core file, then a second optional argument is allowed. If
895 present, this argument should be interpreted as either a
896 PID or a core file, whichever works. */
897 if (pidarg
== NULL
&& corearg
== NULL
&& optind
< argc
)
899 pid_or_core_arg
= argv
[optind
];
903 /* Any argument left on the command line is unexpected and
904 will be ignored. Inform the user. */
906 fprintf_unfiltered (gdb_stderr
,
907 _("Excess command line "
908 "arguments ignored. (%s%s)\n"),
910 (optind
== argc
- 1) ? "" : " ...");
913 /* Lookup gdbinit files. Note that the gdbinit file name may be
914 overriden during file initialization, so get_init_files should be
915 called after gdb_init. */
916 get_init_files (&system_gdbinit
, &home_gdbinit
, &local_gdbinit
);
918 /* Do these (and anything which might call wrap_here or *_filtered)
919 after initialize_all_files() but before the interpreter has been
920 installed. Otherwize the help/version messages will be eaten by
921 the interpreter's output handler. */
925 print_gdb_version (gdb_stdout
);
927 printf_filtered ("\n");
933 print_gdb_help (gdb_stdout
);
934 fputs_unfiltered ("\n", gdb_stdout
);
938 if (print_configuration
)
940 print_gdb_configuration (gdb_stdout
);
942 printf_filtered ("\n");
946 /* FIXME: cagney/2003-02-03: The big hack (part 1 of 2) that lets
947 GDB retain the old MI1 interpreter startup behavior. Output the
948 copyright message before the interpreter is installed. That way
949 it isn't encapsulated in MI output. */
950 if (!quiet
&& strcmp (interpreter_p
, INTERP_MI1
) == 0)
952 /* Print all the junk at the top, with trailing "..." if we are
953 about to read a symbol file (possibly slowly). */
954 print_gdb_version (gdb_stdout
);
956 printf_filtered ("..");
958 printf_filtered ("\n");
959 gdb_flush (gdb_stdout
); /* Force to screen during slow
963 /* Install the default UI. All the interpreters should have had a
964 look at things by now. Initialize the default interpreter. */
968 struct interp
*interp
= interp_lookup (interpreter_p
);
971 error (_("Interpreter `%s' unrecognized"), interpreter_p
);
973 if (!interp_set (interp
, 1))
974 error (_("Interpreter `%s' failed to initialize."), interpreter_p
);
977 /* FIXME: cagney/2003-02-03: The big hack (part 2 of 2) that lets
978 GDB retain the old MI1 interpreter startup behavior. Output the
979 copyright message after the interpreter is installed when it is
980 any sane interpreter. */
981 if (!quiet
&& !current_interp_named_p (INTERP_MI1
))
983 /* Print all the junk at the top, with trailing "..." if we are
984 about to read a symbol file (possibly slowly). */
985 print_gdb_version (gdb_stdout
);
987 printf_filtered ("..");
989 printf_filtered ("\n");
990 gdb_flush (gdb_stdout
); /* Force to screen during slow
994 /* Set off error and warning messages with a blank line. */
995 xfree (warning_pre_print
);
996 warning_pre_print
= _("\nwarning: ");
998 /* Read and execute the system-wide gdbinit file, if it exists.
999 This is done *before* all the command line arguments are
1000 processed; it sets global parameters, which are independent of
1001 what file you are debugging or what directory you are in. */
1002 if (system_gdbinit
&& !inhibit_gdbinit
)
1003 catch_command_errors_const (source_script
, system_gdbinit
, 0);
1005 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
1006 *before* all the command line arguments are processed; it sets
1007 global parameters, which are independent of what file you are
1008 debugging or what directory you are in. */
1010 if (home_gdbinit
&& !inhibit_gdbinit
&& !inhibit_home_gdbinit
)
1011 catch_command_errors_const (source_script
, home_gdbinit
, 0);
1013 /* Process '-ix' and '-iex' options early. */
1014 for (i
= 0; VEC_iterate (cmdarg_s
, cmdarg_vec
, i
, cmdarg_p
); i
++)
1015 switch (cmdarg_p
->type
)
1017 case CMDARG_INIT_FILE
:
1018 catch_command_errors_const (source_script
, cmdarg_p
->string
,
1021 case CMDARG_INIT_COMMAND
:
1022 catch_command_errors (execute_command
, cmdarg_p
->string
,
1027 /* Now perform all the actions indicated by the arguments. */
1030 catch_command_errors (cd_command
, cdarg
, 0);
1033 for (i
= 0; i
< ndir
; i
++)
1034 catch_command_errors (directory_switch
, dirarg
[i
], 0);
1037 /* Skip auto-loading section-specified scripts until we've sourced
1038 local_gdbinit (which is often used to augment the source search
1040 save_auto_load
= global_auto_load
;
1041 global_auto_load
= 0;
1045 && strcmp (execarg
, symarg
) == 0)
1047 /* The exec file and the symbol-file are the same. If we can't
1048 open it, better only print one error message.
1049 catch_command_errors returns non-zero on success! */
1050 if (catch_command_errors_const (exec_file_attach
, execarg
,
1052 catch_command_errors_const (symbol_file_add_main
, symarg
,
1057 if (execarg
!= NULL
)
1058 catch_command_errors_const (exec_file_attach
, execarg
,
1061 catch_command_errors_const (symbol_file_add_main
, symarg
,
1065 if (corearg
&& pidarg
)
1066 error (_("Can't attach to process and specify "
1067 "a core file at the same time."));
1069 if (corearg
!= NULL
)
1070 catch_command_errors (core_file_command
, corearg
, !batch_flag
);
1071 else if (pidarg
!= NULL
)
1072 catch_command_errors (attach_command
, pidarg
, !batch_flag
);
1073 else if (pid_or_core_arg
)
1075 /* The user specified 'gdb program pid' or gdb program core'.
1076 If pid_or_core_arg's first character is a digit, try attach
1077 first and then corefile. Otherwise try just corefile. */
1079 if (isdigit (pid_or_core_arg
[0]))
1081 if (catch_command_errors (attach_command
, pid_or_core_arg
,
1083 catch_command_errors (core_file_command
, pid_or_core_arg
,
1086 else /* Can't be a pid, better be a corefile. */
1087 catch_command_errors (core_file_command
, pid_or_core_arg
,
1092 set_inferior_io_terminal (ttyarg
);
1094 /* Error messages should no longer be distinguished with extra output. */
1095 warning_pre_print
= _("warning: ");
1097 /* Read the .gdbinit file in the current directory, *if* it isn't
1098 the same as the $HOME/.gdbinit file (it should exist, also). */
1101 auto_load_local_gdbinit_pathname
= gdb_realpath (local_gdbinit
);
1103 if (!inhibit_gdbinit
&& auto_load_local_gdbinit
1104 && file_is_auto_load_safe (local_gdbinit
,
1105 _("auto-load: Loading .gdbinit "
1109 auto_load_local_gdbinit_loaded
= 1;
1111 catch_command_errors_const (source_script
, local_gdbinit
, 0);
1115 /* Now that all .gdbinit's have been read and all -d options have been
1116 processed, we can read any scripts mentioned in SYMARG.
1117 We wait until now because it is common to add to the source search
1118 path in local_gdbinit. */
1119 global_auto_load
= save_auto_load
;
1120 ALL_OBJFILES (objfile
)
1121 load_auto_scripts_for_objfile (objfile
);
1123 /* Process '-x' and '-ex' options. */
1124 for (i
= 0; VEC_iterate (cmdarg_s
, cmdarg_vec
, i
, cmdarg_p
); i
++)
1125 switch (cmdarg_p
->type
)
1128 catch_command_errors_const (source_script
, cmdarg_p
->string
,
1131 case CMDARG_COMMAND
:
1132 catch_command_errors (execute_command
, cmdarg_p
->string
,
1137 /* Read in the old history after all the command files have been
1143 /* We have hit the end of the batch file. */
1144 quit_force (NULL
, 0);
1147 /* Show time and/or space usage. */
1148 do_cleanups (pre_stat_chain
);
1150 /* NOTE: cagney/1999-11-07: There is probably no reason for not
1151 moving this loop and the code found in captured_command_loop()
1152 into the command_loop() proper. The main thing holding back that
1153 change - SET_TOP_LEVEL() - has been eliminated. */
1156 catch_errors (captured_command_loop
, 0, "", RETURN_MASK_ALL
);
1158 /* No exit -- exit is through quit_command. */
1162 gdb_main (struct captured_main_args
*args
)
1164 catch_errors (captured_main
, args
, "", RETURN_MASK_ALL
);
1165 /* The only way to end up here is by an error (normal exit is
1166 handled by quit_force()), hence always return an error status. */
1171 /* Don't use *_filtered for printing help. We don't want to prompt
1172 for continue no matter how small the screen or how much we're going
1176 print_gdb_help (struct ui_file
*stream
)
1178 const char *system_gdbinit
;
1179 const char *home_gdbinit
;
1180 const char *local_gdbinit
;
1182 get_init_files (&system_gdbinit
, &home_gdbinit
, &local_gdbinit
);
1184 /* Note: The options in the list below are only approximately sorted
1185 in the alphabetical order, so as to group closely related options
1187 fputs_unfiltered (_("\
1188 This is the GNU debugger. Usage:\n\n\
1189 gdb [options] [executable-file [core-file or process-id]]\n\
1190 gdb [options] --args executable-file [inferior-arguments ...]\n\n\
1192 fputs_unfiltered (_("\
1193 Selection of debuggee and its files:\n\n\
1194 --args Arguments after executable-file are passed to inferior\n\
1195 --core=COREFILE Analyze the core dump COREFILE.\n\
1196 --exec=EXECFILE Use EXECFILE as the executable.\n\
1197 --pid=PID Attach to running process PID.\n\
1198 --directory=DIR Search for source files in DIR.\n\
1199 --se=FILE Use FILE as symbol file and executable file.\n\
1200 --symbols=SYMFILE Read symbols from SYMFILE.\n\
1201 --readnow Fully read symbol files on first access.\n\
1202 --write Set writing into executable and core files.\n\n\
1204 fputs_unfiltered (_("\
1205 Initial commands and command files:\n\n\
1206 --command=FILE, -x Execute GDB commands from FILE.\n\
1207 --init-command=FILE, -ix\n\
1208 Like -x but execute commands before loading inferior.\n\
1209 --eval-command=COMMAND, -ex\n\
1210 Execute a single GDB command.\n\
1211 May be used multiple times and in conjunction\n\
1213 --init-eval-command=COMMAND, -iex\n\
1214 Like -ex but before loading inferior.\n\
1215 --nh Do not read ~/.gdbinit.\n\
1216 --nx Do not read any .gdbinit files in any directory.\n\n\
1218 fputs_unfiltered (_("\
1219 Output and user interface control:\n\n\
1220 --fullname Output information used by emacs-GDB interface.\n\
1221 --interpreter=INTERP\n\
1222 Select a specific interpreter / user interface\n\
1223 --tty=TTY Use TTY for input/output by the program being debugged.\n\
1224 -w Use the GUI interface.\n\
1225 --nw Do not use the GUI interface.\n\
1228 fputs_unfiltered (_("\
1229 --tui Use a terminal user interface.\n\
1232 fputs_unfiltered (_("\
1233 --dbx DBX compatibility mode.\n\
1234 -q, --quiet, --silent\n\
1235 Do not print version number on startup.\n\n\
1237 fputs_unfiltered (_("\
1238 Operating modes:\n\n\
1239 --batch Exit after processing options.\n\
1240 --batch-silent Like --batch, but suppress all gdb stdout output.\n\
1241 --return-child-result\n\
1242 GDB exit code will be the child's exit code.\n\
1243 --configuration Print details about GDB configuration and then exit.\n\
1244 --help Print this message and then exit.\n\
1245 --version Print version information and then exit.\n\n\
1246 Remote debugging options:\n\n\
1247 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
1248 -l TIMEOUT Set timeout in seconds for remote debugging.\n\n\
1250 --cd=DIR Change current directory to DIR.\n\
1251 --data-directory=DIR, -D\n\
1252 Set GDB's data-directory to DIR.\n\
1254 fputs_unfiltered (_("\n\
1255 At startup, GDB reads the following init files and executes their commands:\n\
1258 fprintf_unfiltered (stream
, _("\
1259 * system-wide init file: %s\n\
1260 "), system_gdbinit
);
1262 fprintf_unfiltered (stream
, _("\
1263 * user-specific init file: %s\n\
1266 fprintf_unfiltered (stream
, _("\
1267 * local init file (see also 'set auto-load local-gdbinit'): ./%s\n\
1269 fputs_unfiltered (_("\n\
1270 For more information, type \"help\" from within GDB, or consult the\n\
1271 GDB manual (available as on-line info or a printed manual).\n\
1273 if (REPORT_BUGS_TO
[0] && stream
== gdb_stdout
)
1274 fprintf_unfiltered (stream
, _("\
1275 Report bugs to \"%s\".\n\
1276 "), REPORT_BUGS_TO
);