1 /* Top level stuff for GDB, the GNU debugger.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995
3 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 2 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, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
23 #include "event-loop.h"
26 #include "call-cmds.h"
33 #include <sys/types.h>
37 #include "gdb_string.h"
39 /* If nonzero, display time usage both at startup and for each command. */
43 /* If nonzero, display space usage both at startup and for each command. */
47 /* Whether this is the async version or not. The async version is
48 invoked on the command line with the -nw --async options. In this
49 version, the usual command_loop is substituted by and event loop which
50 processes UI events asynchronously. */
53 /* Whether this is the command line version or not */
56 /* Whether xdb commands will be handled */
59 /* Whether dbx commands will be handled */
66 /* Whether to enable writing into executable and core files */
67 extern int write_files
;
69 static void print_gdb_help
PARAMS ((GDB_FILE
*));
71 /* These two are used to set the external editor commands when gdb is farming
72 out files to be edited by another program. */
74 extern int enable_external_editor
;
75 extern char * external_editor_command
;
78 #include <windows.h> /* for MAX_PATH */
79 #include <sys/cygwin.h> /* for cygwin32_conv_to_posix_path */
91 /* Pointers to various arguments from command line. */
98 /* These are static so that we can take their address in an initializer. */
99 static int print_help
;
100 static int print_version
;
102 /* Pointers to all arguments of --command option. */
104 /* Allocated size of cmdarg. */
106 /* Number of elements of cmdarg used. */
109 /* Indices of all arguments of --directory option. */
111 /* Allocated size. */
113 /* Number of elements used. */
116 struct stat homebuf
, cwdbuf
;
117 char *homedir
, *homeinit
;
121 long time_at_startup
= get_run_time ();
125 START_PROGRESS (argv
[0], 0);
128 /* Do all Mac-specific setup. */
132 /* This needs to happen before the first use of malloc. */
133 init_malloc ((PTR
) NULL
);
135 #if defined (ALIGN_STACK_ON_STARTUP)
136 i
= (int) &count
& 0x3;
141 /* If error() is called from initialization code, just exit */
142 if (SET_TOP_LEVEL ()) {
147 cmdarg
= (char **) xmalloc (cmdsize
* sizeof (*cmdarg
));
150 dirarg
= (char **) xmalloc (dirsize
* sizeof (*dirarg
));
154 line
= (char *) xmalloc (linesize
);
155 line
[0] = '\0'; /* Terminate saved (now empty) cmd line */
158 getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
));
159 current_directory
= gdb_dirbuf
;
163 gdb_stdout
= stdio_fileopen (stdout
);
164 gdb_stderr
= stdio_fileopen (stderr
);
165 gdb_stdlog
= gdb_stderr
; /* for moment */
167 gdb_stdout
= tui_fileopen (stdout
);
168 gdb_stderr
= tui_fileopen (stderr
);
169 gdb_stdlog
= gdb_stdout
; /* for moment */
172 /* Parse arguments and options. */
175 /* When var field is 0, use flag field to record the equivalent
176 short option (or arbitrary numbers starting at 10 for those
177 with no equivalent). */
178 static struct option long_options
[] =
180 {"async", no_argument
, &async_p
, 1},
181 {"noasync", no_argument
, &async_p
, 0},
183 {"tui", no_argument
, &tui_version
, 1},
185 {"xdb", no_argument
, &xdb_commands
, 1},
186 {"dbx", no_argument
, &dbx_commands
, 1},
187 {"readnow", no_argument
, &readnow_symbol_files
, 1},
188 {"r", no_argument
, &readnow_symbol_files
, 1},
189 {"mapped", no_argument
, &mapped_symbol_files
, 1},
190 {"m", no_argument
, &mapped_symbol_files
, 1},
191 {"quiet", no_argument
, &quiet
, 1},
192 {"q", no_argument
, &quiet
, 1},
193 {"silent", no_argument
, &quiet
, 1},
194 {"nx", no_argument
, &inhibit_gdbinit
, 1},
195 {"n", no_argument
, &inhibit_gdbinit
, 1},
196 {"batch", no_argument
, &batch
, 1},
197 {"epoch", no_argument
, &epoch_interface
, 1},
199 /* This is a synonym for "--annotate=1". --annotate is now preferred,
200 but keep this here for a long time because people will be running
201 emacses which use --fullname. */
202 {"fullname", no_argument
, 0, 'f'},
203 {"f", no_argument
, 0, 'f'},
205 {"annotate", required_argument
, 0, 12},
206 {"help", no_argument
, &print_help
, 1},
207 {"se", required_argument
, 0, 10},
208 {"symbols", required_argument
, 0, 's'},
209 {"s", required_argument
, 0, 's'},
210 {"exec", required_argument
, 0, 'e'},
211 {"e", required_argument
, 0, 'e'},
212 {"core", required_argument
, 0, 'c'},
213 {"c", required_argument
, 0, 'c'},
214 {"command", required_argument
, 0, 'x'},
215 {"version", no_argument
, &print_version
, 1},
216 {"x", required_argument
, 0, 'x'},
217 {"directory", required_argument
, 0, 'd'},
218 {"cd", required_argument
, 0, 11},
219 {"tty", required_argument
, 0, 't'},
220 {"baud", required_argument
, 0, 'b'},
221 {"b", required_argument
, 0, 'b'},
222 {"nw", no_argument
, &use_windows
, 0},
223 {"nowindows", no_argument
, &use_windows
, 0},
224 {"w", no_argument
, &use_windows
, 1},
225 {"windows", no_argument
, &use_windows
, 1},
226 {"statistics", no_argument
, 0, 13},
227 {"write", no_argument
, &write_files
, 1},
228 /* Allow machine descriptions to add more options... */
229 #ifdef ADDITIONAL_OPTIONS
232 {0, no_argument
, 0, 0}
239 c
= getopt_long_only (argc
, argv
, "",
240 long_options
, &option_index
);
244 /* Long option that takes an argument. */
245 if (c
== 0 && long_options
[option_index
].flag
== 0)
246 c
= long_options
[option_index
].val
;
251 /* Long option that just sets a flag. */
261 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
262 annotation_level
= atoi (optarg
);
265 /* Enable the display of both time and space usage. */
270 annotation_level
= 1;
271 /* We have probably been invoked from emacs. Disable window interface. */
284 cmdarg
[ncmd
++] = optarg
;
288 cmdarg
= (char **) xrealloc ((char *)cmdarg
,
289 cmdsize
* sizeof (*cmdarg
));
293 dirarg
[ndir
++] = optarg
;
297 dirarg
= (char **) xrealloc ((char *)dirarg
,
298 dirsize
* sizeof (*dirarg
));
312 i
= strtol (optarg
, &p
, 0);
313 if (i
== 0 && p
== optarg
)
315 /* Don't use *_filtered or warning() (which relies on
316 current_target) until after initialize_all_files(). */
320 "warning: could not set baud rate to `%s'.\n", optarg
);
329 i
= strtol (optarg
, &p
, 0);
330 if (i
== 0 && p
== optarg
)
332 /* Don't use *_filtered or warning() (which relies on
333 current_target) until after initialize_all_files(). */
337 "warning: could not set timeout limit to `%s'.\n", optarg
);
343 #ifdef ADDITIONAL_OPTION_CASES
344 ADDITIONAL_OPTION_CASES
347 fprintf_unfiltered (gdb_stderr
,
348 "Use `%s --help' for a complete list of options.\n",
354 /* If --help or --version, disable window interface. */
355 if (print_help
|| print_version
)
359 /* Disable the TUI as well. */
365 /* An explicit --tui flag overrides the default UI, which is the
371 /* OK, that's all the options. The other arguments are filenames. */
373 for (; optind
< argc
; optind
++)
377 symarg
= argv
[optind
];
378 execarg
= argv
[optind
];
381 corearg
= argv
[optind
];
384 fprintf_unfiltered (gdb_stderr
,
385 "Excess command line arguments ignored. (%s%s)\n",
386 argv
[optind
], (optind
== argc
- 1) ? "" : " ...");
393 /* Get ready to invoke the event loop instead of the
394 command_loop. See event-loop.h for more details.*/
396 command_loop_hook
= start_event_loop
;
398 /* Should this be moved to tui-top.c:_initialize_tui()? */
400 init_ui_hook
= tuiInit
;
403 /* Initialize all files. Give the interpreter a chance to take
404 control of the console via the init_ui_hook()) */
407 /* Do these (and anything which might call wrap_here or *_filtered)
408 after initialize_all_files. */
411 print_gdb_version (gdb_stdout
);
413 printf_filtered ("\n");
419 print_gdb_help (gdb_stdout
);
420 fputs_unfiltered ("\n", gdb_stdout
);
426 /* Print all the junk at the top, with trailing "..." if we are about
427 to read a symbol file (possibly slowly). */
428 print_gdb_version (gdb_stdout
);
430 printf_filtered ("..");
432 gdb_flush (gdb_stdout
); /* Force to screen during slow operations */
435 error_pre_print
= "\n\n";
436 quit_pre_print
= error_pre_print
;
438 /* We may get more than one warning, don't double space all of them... */
439 warning_pre_print
= "\nwarning: ";
441 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
442 *before* all the command line arguments are processed; it sets
443 global parameters, which are independent of what file you are
444 debugging or what directory you are in. */
447 char * tmp
= getenv ("HOME");
451 homedir
= (char *) alloca (MAX_PATH
+1);
452 cygwin32_conv_to_posix_path (tmp
, homedir
);
458 homedir
= getenv ("HOME");
462 homeinit
= (char *) alloca (strlen (homedir
) +
463 strlen (gdbinit
) + 10);
464 strcpy (homeinit
, homedir
);
465 strcat (homeinit
, "/");
466 strcat (homeinit
, gdbinit
);
468 if (!inhibit_gdbinit
)
470 if (!SET_TOP_LEVEL ())
471 source_command (homeinit
, 0);
473 do_cleanups (ALL_CLEANUPS
);
475 /* Do stats; no need to do them elsewhere since we'll only
476 need them if homedir is set. Make sure that they are
477 zero in case one of them fails (this guarantees that they
478 won't match if either exists). */
480 memset (&homebuf
, 0, sizeof (struct stat
));
481 memset (&cwdbuf
, 0, sizeof (struct stat
));
483 stat (homeinit
, &homebuf
);
484 stat (gdbinit
, &cwdbuf
); /* We'll only need this if
488 /* Now perform all the actions indicated by the arguments. */
491 if (!SET_TOP_LEVEL ())
493 cd_command (cdarg
, 0);
496 do_cleanups (ALL_CLEANUPS
);
498 for (i
= 0; i
< ndir
; i
++)
499 if (!SET_TOP_LEVEL ())
500 directory_command (dirarg
[i
], 0);
502 do_cleanups (ALL_CLEANUPS
);
506 && STREQ (execarg
, symarg
))
508 /* The exec file and the symbol-file are the same. If we can't open
509 it, better only print one error message. */
510 if (!SET_TOP_LEVEL ())
512 exec_file_command (execarg
, !batch
);
513 symbol_file_command (symarg
, 0);
519 if (!SET_TOP_LEVEL ())
520 exec_file_command (execarg
, !batch
);
522 if (!SET_TOP_LEVEL ())
523 symbol_file_command (symarg
, 0);
525 do_cleanups (ALL_CLEANUPS
);
527 /* After the symbol file has been read, print a newline to get us
528 beyond the copyright line... But errors should still set off
529 the error message with a (single) blank line. */
531 printf_filtered ("\n");
532 error_pre_print
= "\n";
533 quit_pre_print
= error_pre_print
;
534 warning_pre_print
= "\nwarning: ";
538 if (!SET_TOP_LEVEL ())
539 core_file_command (corearg
, !batch
);
540 else if (isdigit (corearg
[0]) && !SET_TOP_LEVEL ())
541 attach_command (corearg
, !batch
);
543 do_cleanups (ALL_CLEANUPS
);
546 if (!SET_TOP_LEVEL ())
547 tty_command (ttyarg
, !batch
);
548 do_cleanups (ALL_CLEANUPS
);
550 #ifdef ADDITIONAL_OPTION_HANDLER
551 ADDITIONAL_OPTION_HANDLER
;
554 /* Error messages should no longer be distinguished with extra output. */
555 error_pre_print
= NULL
;
556 quit_pre_print
= NULL
;
557 warning_pre_print
= "warning: ";
559 /* Read the .gdbinit file in the current directory, *if* it isn't
560 the same as the $HOME/.gdbinit file (it should exist, also). */
563 || memcmp ((char *) &homebuf
, (char *) &cwdbuf
, sizeof (struct stat
)))
564 if (!inhibit_gdbinit
)
566 if (!SET_TOP_LEVEL ())
567 source_command (gdbinit
, 0);
569 do_cleanups (ALL_CLEANUPS
);
571 for (i
= 0; i
< ncmd
; i
++)
573 if (!SET_TOP_LEVEL ())
575 /* NOTE: I am commenting this out, because it is not clear
576 where this feature is used. It is very old and
577 undocumented. ezannoni: 1999-05-04*/
579 if (cmdarg
[i
][0] == '-' && cmdarg
[i
][1] == '\0')
580 read_command_file (stdin
);
583 source_command (cmdarg
[i
], !batch
);
584 do_cleanups (ALL_CLEANUPS
);
589 /* Read in the old history after all the command files have been read. */
594 /* We have hit the end of the batch file. */
598 /* Do any host- or target-specific hacks. This is used for i960 targets
599 to force the user to set a nindy target and spec its parameters. */
601 #ifdef BEFORE_MAIN_LOOP_HOOK
602 BEFORE_MAIN_LOOP_HOOK
;
605 END_PROGRESS (argv
[0]);
607 /* Show time and/or space usage. */
611 long init_time
= get_run_time () - time_at_startup
;
613 printf_unfiltered ("Startup time: %ld.%06ld\n",
614 init_time
/ 1000000, init_time
% 1000000);
620 extern char **environ
;
621 char *lim
= (char *) sbrk (0);
623 printf_unfiltered ("Startup size: data size %ld\n",
624 (long) (lim
- (char *) &environ
));
628 /* The default command loop.
629 The WIN32 Gui calls this main to set up gdb's state, and
630 has its own command loop. */
631 #if !defined _WIN32 || defined __GNUC__
634 if (!SET_TOP_LEVEL ())
636 do_cleanups (ALL_CLEANUPS
); /* Do complete cleanup */
637 /* GUIs generally have their own command loop, mainloop, or whatever.
638 This is a good place to gain control because many error
639 conditions will end up here via longjmp(). */
640 if (command_loop_hook
)
641 command_loop_hook ();
644 quit_command ((char *)0, instream
== stdin
);
647 /* No exit -- exit is through quit_command. */
652 /* Don't use *_filtered for printing help. We don't want to prompt
653 for continue no matter how small the screen or how much we're going
657 print_gdb_help (stream
)
661 This is the GNU debugger. Usage:\n\n\
662 gdb [options] [executable-file [core-file or process-id]]\n\n\
666 --[no]async Enable (disable) asynchronous version of CLI\n\
669 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
670 --batch Exit after processing options.\n\
671 --cd=DIR Change current directory to DIR.\n\
672 --command=FILE Execute GDB commands from FILE.\n\
673 --core=COREFILE Analyze the core dump COREFILE.\n\
676 --dbx DBX compatibility mode.\n\
677 --directory=DIR Search for source files in DIR.\n\
678 --epoch Output information used by epoch emacs-GDB interface.\n\
679 --exec=EXECFILE Use EXECFILE as the executable.\n\
680 --fullname Output information used by emacs-GDB interface.\n\
681 --help Print this message.\n\
684 --mapped Use mapped symbol files if supported on this system.\n\
685 --nw Do not use a window interface.\n\
686 --nx Do not read .gdbinit file.\n\
687 --quiet Do not print version number on startup.\n\
688 --readnow Fully read symbol files on first access.\n\
691 --se=FILE Use FILE as symbol file and executable file.\n\
692 --symbols=SYMFILE Read symbols from SYMFILE.\n\
693 --tty=TTY Use TTY for input/output by the program being debugged.\n\
697 --tui Use a terminal user interface.\n\
701 --version Print version information and then exit.\n\
702 -w Use a window interface.\n\
703 --write Set writing into executable and core files.\n\
704 --xdb XDB compatibility mode.\n\
706 #ifdef ADDITIONAL_OPTION_HELP
707 fputs_unfiltered (ADDITIONAL_OPTION_HELP
, stream
);
709 fputs_unfiltered ("\n\
710 For more information, type \"help\" from within GDB, or consult the\n\
711 GDB manual (available as on-line info or a printed manual).\n\
712 Report bugs to \"bug-gdb@prep.ai.mit.edu\".\
717 /* All TUI I/O sent to the *_filtered and *_unfiltered functions
718 eventually ends up here. The fputs_unfiltered_hook is primarily
719 used by GUIs to collect all output and send it to the GUI, instead
720 of the controlling terminal. Only output to gdb_stdout and
721 gdb_stderr are sent to the hook. Everything else is sent on to
722 fputs to allow file I/O to be handled appropriately. */
724 /* FIXME: Should be broken up and moved to a TUI specific file. */
727 tui_file_fputs (linebuffer
, file
)
728 const char *linebuffer
;
731 struct tui_stream
*stream
= gdb_file_data (file
);
733 extern int tui_owns_terminal
;
735 /* If anything (GUI, TUI) wants to capture GDB output, this is
736 * the place... the way to do it is to set up
737 * fputs_unfiltered_hook.
738 * Our TUI ("gdb -tui") used to hook output, but in the
739 * new (XDB style) scheme, we do not do that anymore... - RT
741 if (fputs_unfiltered_hook
742 && (file
== gdb_stdout
743 || file
== gdb_stderr
))
744 fputs_unfiltered_hook (linebuffer
, file
);
748 if (tui_version
&& tui_owns_terminal
) {
749 /* If we get here somehow while updating the TUI (from
750 * within a tuiDo(), then we need to temporarily
751 * set up the terminal for GDB output. This probably just
752 * happens on error output.
755 if (stream
->ts_streamtype
== astring
) {
756 gdb_file_adjust_strbuf(strlen(linebuffer
), stream
);
757 strcat(stream
->ts_strbuf
, linebuffer
);
759 tuiTermUnsetup(0, (tui_version
) ? cmdWin
->detail
.commandInfo
.curch
: 0);
760 fputs (linebuffer
, stream
->ts_filestream
);
762 if (linebuffer
[strlen(linebuffer
) - 1] == '\n')
763 tuiClearCommandCharCount();
765 tuiIncrCommandCharCountBy(strlen(linebuffer
));
768 /* The normal case - just do a fputs() */
769 if (stream
->ts_streamtype
== astring
) {
770 gdb_file_adjust_strbuf(strlen(linebuffer
), stream
);
771 strcat(stream
->ts_strbuf
, linebuffer
);
772 } else fputs (linebuffer
, stream
->ts_filestream
);
777 if (stream
->ts_streamtype
== astring
) {
778 gdb_file_adjust_strbuf(strlen(linebuffer
), file
);
779 strcat(stream
->ts_strbuf
, linebuffer
);
780 } else fputs (linebuffer
, stream
->ts_filestream
);