1 /* Top level stuff for GDB, the GNU debugger.
2 Copyright 1986, 87, 88, 89, 90, 91, 92, 93, 94, 95, 1999
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,
20 Boston, MA 02111-1307, USA. */
26 #include "call-cmds.h"
30 #include <sys/types.h>
34 #include "gdb_string.h"
35 #include "event-loop.h"
37 /* If nonzero, display time usage both at startup and for each command. */
41 /* If nonzero, display space usage both at startup and for each command. */
45 /* Whether this is the async version or not. The async version is
46 invoked on the command line with the -nw --async options. In this
47 version, the usual command_loop is substituted by and event loop which
48 processes UI events asynchronously. */
51 /* Whether this is the command line version or not */
54 /* Whether xdb commands will be handled */
57 /* Whether dbx commands will be handled */
63 GDB_FILE
*gdb_stdtarg
;
65 /* Whether to enable writing into executable and core files */
66 extern int write_files
;
68 static void print_gdb_help
PARAMS ((GDB_FILE
*));
70 /* These two are used to set the external editor commands when gdb is farming
71 out files to be edited by another program. */
73 extern int enable_external_editor
;
74 extern char *external_editor_command
;
77 #include <windows.h> /* for MAX_PATH */
78 #include <sys/cygwin.h> /* for cygwin32_conv_to_posix_path */
90 /* Pointers to various arguments from command line. */
97 /* These are static so that we can take their address in an initializer. */
98 static int print_help
;
99 static int print_version
;
101 /* Pointers to all arguments of --command option. */
103 /* Allocated size of cmdarg. */
105 /* Number of elements of cmdarg used. */
108 /* Indices of all arguments of --directory option. */
110 /* Allocated size. */
112 /* Number of elements used. */
115 struct stat homebuf
, cwdbuf
;
116 char *homedir
, *homeinit
;
120 long time_at_startup
= get_run_time ();
122 START_PROGRESS (argv
[0], 0);
125 /* Do all Mac-specific setup. */
129 /* This needs to happen before the first use of malloc. */
130 init_malloc ((PTR
) NULL
);
132 #if defined (ALIGN_STACK_ON_STARTUP)
133 i
= (int) &count
& 0x3;
138 /* If error() is called from initialization code, just exit */
139 if (SET_TOP_LEVEL ())
145 cmdarg
= (char **) xmalloc (cmdsize
* sizeof (*cmdarg
));
148 dirarg
= (char **) xmalloc (dirsize
* sizeof (*dirarg
));
152 line
= (char *) xmalloc (linesize
);
153 line
[0] = '\0'; /* Terminate saved (now empty) cmd line */
156 getcwd (gdb_dirbuf
, sizeof (gdb_dirbuf
));
157 current_directory
= gdb_dirbuf
;
161 gdb_stdout
= stdio_fileopen (stdout
);
162 gdb_stderr
= stdio_fileopen (stderr
);
163 gdb_stdlog
= gdb_stderr
; /* for moment */
164 gdb_stdtarg
= gdb_stderr
; /* for moment */
166 gdb_stdout
= tui_fileopen (stdout
);
167 gdb_stderr
= tui_fileopen (stderr
);
168 gdb_stdlog
= gdb_stdout
; /* for moment */
169 gdb_stdtarg
= gdb_stderr
; /* 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) ? "" : " ...");
394 /* Should this be moved to tui-top.c:_initialize_tui()? */
396 init_ui_hook
= tuiInit
;
399 /* Initialize all files. Give the interpreter a chance to take
400 control of the console via the init_ui_hook()) */
403 /* Do these (and anything which might call wrap_here or *_filtered)
404 after initialize_all_files. */
407 print_gdb_version (gdb_stdout
);
409 printf_filtered ("\n");
415 print_gdb_help (gdb_stdout
);
416 fputs_unfiltered ("\n", gdb_stdout
);
422 /* Print all the junk at the top, with trailing "..." if we are about
423 to read a symbol file (possibly slowly). */
424 print_gdb_version (gdb_stdout
);
426 printf_filtered ("..");
428 gdb_flush (gdb_stdout
); /* Force to screen during slow operations */
431 error_pre_print
= "\n\n";
432 quit_pre_print
= error_pre_print
;
434 /* We may get more than one warning, don't double space all of them... */
435 warning_pre_print
= "\nwarning: ";
437 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
438 *before* all the command line arguments are processed; it sets
439 global parameters, which are independent of what file you are
440 debugging or what directory you are in. */
443 char *tmp
= getenv ("HOME");
447 homedir
= (char *) alloca (MAX_PATH
+ 1);
448 cygwin32_conv_to_posix_path (tmp
, homedir
);
454 homedir
= getenv ("HOME");
458 homeinit
= (char *) alloca (strlen (homedir
) +
459 strlen (gdbinit
) + 10);
460 strcpy (homeinit
, homedir
);
461 strcat (homeinit
, "/");
462 strcat (homeinit
, gdbinit
);
464 if (!inhibit_gdbinit
)
466 if (!SET_TOP_LEVEL ())
467 source_command (homeinit
, 0);
469 do_cleanups (ALL_CLEANUPS
);
471 /* Do stats; no need to do them elsewhere since we'll only
472 need them if homedir is set. Make sure that they are
473 zero in case one of them fails (this guarantees that they
474 won't match if either exists). */
476 memset (&homebuf
, 0, sizeof (struct stat
));
477 memset (&cwdbuf
, 0, sizeof (struct stat
));
479 stat (homeinit
, &homebuf
);
480 stat (gdbinit
, &cwdbuf
); /* We'll only need this if
484 /* Now perform all the actions indicated by the arguments. */
487 if (!SET_TOP_LEVEL ())
489 cd_command (cdarg
, 0);
492 do_cleanups (ALL_CLEANUPS
);
494 for (i
= 0; i
< ndir
; i
++)
495 if (!SET_TOP_LEVEL ())
496 directory_command (dirarg
[i
], 0);
498 do_cleanups (ALL_CLEANUPS
);
502 && STREQ (execarg
, symarg
))
504 /* The exec file and the symbol-file are the same. If we can't open
505 it, better only print one error message. */
506 if (!SET_TOP_LEVEL ())
508 exec_file_command (execarg
, !batch
);
509 symbol_file_command (symarg
, 0);
515 if (!SET_TOP_LEVEL ())
516 exec_file_command (execarg
, !batch
);
518 if (!SET_TOP_LEVEL ())
519 symbol_file_command (symarg
, 0);
521 do_cleanups (ALL_CLEANUPS
);
523 /* After the symbol file has been read, print a newline to get us
524 beyond the copyright line... But errors should still set off
525 the error message with a (single) blank line. */
527 printf_filtered ("\n");
528 error_pre_print
= "\n";
529 quit_pre_print
= error_pre_print
;
530 warning_pre_print
= "\nwarning: ";
534 if (!SET_TOP_LEVEL ())
535 core_file_command (corearg
, !batch
);
536 else if (isdigit (corearg
[0]) && !SET_TOP_LEVEL ())
537 attach_command (corearg
, !batch
);
539 do_cleanups (ALL_CLEANUPS
);
542 if (!SET_TOP_LEVEL ())
543 tty_command (ttyarg
, !batch
);
544 do_cleanups (ALL_CLEANUPS
);
546 #ifdef ADDITIONAL_OPTION_HANDLER
547 ADDITIONAL_OPTION_HANDLER
;
550 /* Error messages should no longer be distinguished with extra output. */
551 error_pre_print
= NULL
;
552 quit_pre_print
= NULL
;
553 warning_pre_print
= "warning: ";
555 /* Read the .gdbinit file in the current directory, *if* it isn't
556 the same as the $HOME/.gdbinit file (it should exist, also). */
559 || memcmp ((char *) &homebuf
, (char *) &cwdbuf
, sizeof (struct stat
)))
560 if (!inhibit_gdbinit
)
562 if (!SET_TOP_LEVEL ())
563 source_command (gdbinit
, 0);
565 do_cleanups (ALL_CLEANUPS
);
567 for (i
= 0; i
< ncmd
; i
++)
569 if (!SET_TOP_LEVEL ())
571 /* NOTE: I am commenting this out, because it is not clear
572 where this feature is used. It is very old and
573 undocumented. ezannoni: 1999-05-04 */
575 if (cmdarg
[i
][0] == '-' && cmdarg
[i
][1] == '\0')
576 read_command_file (stdin
);
579 source_command (cmdarg
[i
], !batch
);
580 do_cleanups (ALL_CLEANUPS
);
585 /* Read in the old history after all the command files have been read. */
590 /* We have hit the end of the batch file. */
594 /* Do any host- or target-specific hacks. This is used for i960 targets
595 to force the user to set a nindy target and spec its parameters. */
597 #ifdef BEFORE_MAIN_LOOP_HOOK
598 BEFORE_MAIN_LOOP_HOOK
;
601 END_PROGRESS (argv
[0]);
603 /* Show time and/or space usage. */
607 long init_time
= get_run_time () - time_at_startup
;
609 printf_unfiltered ("Startup time: %ld.%06ld\n",
610 init_time
/ 1000000, init_time
% 1000000);
616 extern char **environ
;
617 char *lim
= (char *) sbrk (0);
619 printf_unfiltered ("Startup size: data size %ld\n",
620 (long) (lim
- (char *) &environ
));
624 /* The default command loop.
625 The WIN32 Gui calls this main to set up gdb's state, and
626 has its own command loop. */
627 #if !defined _WIN32 || defined __GNUC__
630 if (!SET_TOP_LEVEL ())
632 do_cleanups (ALL_CLEANUPS
); /* Do complete cleanup */
633 /* GUIs generally have their own command loop, mainloop, or whatever.
634 This is a good place to gain control because many error
635 conditions will end up here via longjmp(). */
636 if (command_loop_hook
)
637 command_loop_hook ();
640 quit_command ((char *) 0, instream
== stdin
);
643 /* No exit -- exit is through quit_command. */
648 /* Don't use *_filtered for printing help. We don't want to prompt
649 for continue no matter how small the screen or how much we're going
653 print_gdb_help (stream
)
657 This is the GNU debugger. Usage:\n\n\
658 gdb [options] [executable-file [core-file or process-id]]\n\n\
662 --[no]async Enable (disable) asynchronous version of CLI\n\
665 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
666 --batch Exit after processing options.\n\
667 --cd=DIR Change current directory to DIR.\n\
668 --command=FILE Execute GDB commands from FILE.\n\
669 --core=COREFILE Analyze the core dump COREFILE.\n\
672 --dbx DBX compatibility mode.\n\
673 --directory=DIR Search for source files in DIR.\n\
674 --epoch Output information used by epoch emacs-GDB interface.\n\
675 --exec=EXECFILE Use EXECFILE as the executable.\n\
676 --fullname Output information used by emacs-GDB interface.\n\
677 --help Print this message.\n\
680 --mapped Use mapped symbol files if supported on this system.\n\
681 --nw Do not use a window interface.\n\
682 --nx Do not read ", stream
);
683 fputs_unfiltered (gdbinit
, stream
);
684 fputs_unfiltered (" file.\n\
685 --quiet Do not print version number on startup.\n\
686 --readnow Fully read symbol files on first access.\n\
689 --se=FILE Use FILE as symbol file and executable file.\n\
690 --symbols=SYMFILE Read symbols from SYMFILE.\n\
691 --tty=TTY Use TTY for input/output by the program being debugged.\n\
695 --tui Use a terminal user interface.\n\
699 --version Print version information and then exit.\n\
700 -w Use a window interface.\n\
701 --write Set writing into executable and core files.\n\
702 --xdb XDB compatibility mode.\n\
704 #ifdef ADDITIONAL_OPTION_HELP
705 fputs_unfiltered (ADDITIONAL_OPTION_HELP
, stream
);
707 fputs_unfiltered ("\n\
708 For more information, type \"help\" from within GDB, or consult the\n\
709 GDB manual (available as on-line info or a printed manual).\n\
710 Report bugs to \"bug-gdb@prep.ai.mit.edu\".\