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. */
26 #include "call-cmds.h"
30 #include <sys/types.h>
34 #include "gdb_string.h"
36 /* Temporary variable for SET_TOP_LEVEL. */
38 static int top_level_val;
40 /* Do a setjmp on error_return and quit_return. catch_errors is
41 generally a cleaner way to do this, but main() would look pretty
42 ugly if it had to use catch_errors each time. */
44 #define SET_TOP_LEVEL() \
45 (((top_level_val = setjmp (error_return)) \
46 ? (PTR) 0 : (PTR) memcpy (quit_return, error_return, sizeof (jmp_buf))) \
49 /* If nonzero, display time usage both at startup and for each command. */
53 /* If nonzero, display space usage both at startup and for each command. */
57 extern void gdb_init PARAMS ((void));
68 /* Pointers to various arguments from command line. */
75 /* These are static so that we can take their address in an initializer. */
76 static int print_help;
77 static int print_version;
79 /* Pointers to all arguments of --command option. */
81 /* Allocated size of cmdarg. */
83 /* Number of elements of cmdarg used. */
86 /* Indices of all arguments of --directory option. */
90 /* Number of elements used. */
93 struct stat homebuf, cwdbuf;
94 char *homedir, *homeinit;
98 long time_at_startup = get_run_time ();
100 START_PROGRESS (argv[0], 0);
103 /* Do all Mac-specific setup. */
107 /* This needs to happen before the first use of malloc. */
108 init_malloc ((PTR) NULL);
110 #if defined (ALIGN_STACK_ON_STARTUP)
111 i = (int) &count & 0x3;
116 /* If error() is called from initialization code, just exit */
117 if (SET_TOP_LEVEL ()) {
122 cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg));
125 dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
129 line = (char *) xmalloc (linesize);
130 line[0] = '\0'; /* Terminate saved (now empty) cmd line */
133 getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
134 current_directory = gdb_dirbuf;
136 /* Parse arguments and options. */
139 /* When var field is 0, use flag field to record the equivalent
140 short option (or arbitrary numbers starting at 10 for those
141 with no equivalent). */
142 static struct option long_options[] =
144 {"readnow", no_argument, &readnow_symbol_files, 1},
145 {"r", no_argument, &readnow_symbol_files, 1},
146 {"mapped", no_argument, &mapped_symbol_files, 1},
147 {"m", no_argument, &mapped_symbol_files, 1},
148 {"quiet", no_argument, &quiet, 1},
149 {"q", no_argument, &quiet, 1},
150 {"silent", no_argument, &quiet, 1},
151 {"nx", no_argument, &inhibit_gdbinit, 1},
152 {"n", no_argument, &inhibit_gdbinit, 1},
153 {"batch", no_argument, &batch, 1},
154 {"epoch", no_argument, &epoch_interface, 1},
156 /* This is a synonym for "--annotate=1". --annotate is now preferred,
157 but keep this here for a long time because people will be running
158 emacses which use --fullname. */
159 {"fullname", no_argument, 0, 'f'},
160 {"f", no_argument, 0, 'f'},
162 {"annotate", required_argument, 0, 12},
163 {"help", no_argument, &print_help, 1},
164 {"se", required_argument, 0, 10},
165 {"symbols", required_argument, 0, 's'},
166 {"s", required_argument, 0, 's'},
167 {"exec", required_argument, 0, 'e'},
168 {"e", required_argument, 0, 'e'},
169 {"core", required_argument, 0, 'c'},
170 {"c", required_argument, 0, 'c'},
171 {"command", required_argument, 0, 'x'},
172 {"version", no_argument, &print_version, 1},
173 {"x", required_argument, 0, 'x'},
174 {"directory", required_argument, 0, 'd'},
175 {"cd", required_argument, 0, 11},
176 {"tty", required_argument, 0, 't'},
177 {"baud", required_argument, 0, 'b'},
178 {"b", required_argument, 0, 'b'},
179 {"nw", no_argument, &use_windows, 0},
180 {"nowindows", no_argument, &use_windows, 0},
181 {"w", no_argument, &use_windows, 1},
182 {"windows", no_argument, &use_windows, 1},
183 {"statistics", no_argument, 0, 13},
184 /* Allow machine descriptions to add more options... */
185 #ifdef ADDITIONAL_OPTIONS
188 {0, no_argument, 0, 0}
195 c = getopt_long_only (argc, argv, "",
196 long_options, &option_index);
200 /* Long option that takes an argument. */
201 if (c == 0 && long_options[option_index].flag == 0)
202 c = long_options[option_index].val;
207 /* Long option that just sets a flag. */
217 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
218 annotation_level = atoi (optarg);
221 /* Enable the display of both time and space usage. */
226 annotation_level = 1;
227 /* We have probably been invoked from emacs. Disable window interface. */
240 cmdarg[ncmd++] = optarg;
244 cmdarg = (char **) xrealloc ((char *)cmdarg,
245 cmdsize * sizeof (*cmdarg));
249 dirarg[ndir++] = optarg;
253 dirarg = (char **) xrealloc ((char *)dirarg,
254 dirsize * sizeof (*dirarg));
268 i = strtol (optarg, &p, 0);
269 if (i == 0 && p == optarg)
271 /* Don't use *_filtered or warning() (which relies on
272 current_target) until after initialize_all_files(). */
276 "warning: could not set baud rate to `%s'.\n", optarg);
285 i = strtol (optarg, &p, 0);
286 if (i == 0 && p == optarg)
288 /* Don't use *_filtered or warning() (which relies on
289 current_target) until after initialize_all_files(). */
293 "warning: could not set timeout limit to `%s'.\n", optarg);
299 #ifdef ADDITIONAL_OPTION_CASES
300 ADDITIONAL_OPTION_CASES
303 fprintf_unfiltered (gdb_stderr,
304 "Use `%s --help' for a complete list of options.\n",
310 /* If --help or --version, disable window interface. */
311 if (print_help || print_version)
314 /* OK, that's all the options. The other arguments are filenames. */
316 for (; optind < argc; optind++)
320 symarg = argv[optind];
321 execarg = argv[optind];
324 corearg = argv[optind];
327 fprintf_unfiltered (gdb_stderr,
328 "Excess command line arguments ignored. (%s%s)\n",
329 argv[optind], (optind == argc - 1) ? "" : " ...");
338 /* Do these (and anything which might call wrap_here or *_filtered)
339 after initialize_all_files. */
342 print_gdb_version (gdb_stdout);
344 printf_filtered ("\n");
350 /* --version is intentionally not documented here, because we
351 are printing the version here, and the help is long enough
354 print_gdb_version (gdb_stdout);
355 /* Make sure the output gets printed. */
357 printf_filtered ("\n");
359 /* But don't use *_filtered here. We don't want to prompt for continue
360 no matter how small the screen or how much we're going to print. */
362 This is the GNU debugger. Usage:\n\
363 gdb [options] [executable-file [core-file or process-id]]\n\
365 --help Print this message.\n\
366 --quiet Do not print version number on startup.\n\
367 --fullname Output information used by emacs-GDB interface.\n\
368 --epoch Output information used by epoch emacs-GDB interface.\n\
371 --batch Exit after processing options.\n\
372 --nx Do not read .gdbinit file.\n\
373 --tty=TTY Use TTY for input/output by the program being debugged.\n\
374 --cd=DIR Change current directory to DIR.\n\
375 --directory=DIR Search for source files in DIR.\n\
378 --command=FILE Execute GDB commands from FILE.\n\
379 --symbols=SYMFILE Read symbols from SYMFILE.\n\
380 --exec=EXECFILE Use EXECFILE as the executable.\n\
381 --se=FILE Use FILE as symbol file and executable file.\n\
384 --core=COREFILE Analyze the core dump COREFILE.\n\
385 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
386 --mapped Use mapped symbol files if supported on this system.\n\
387 --readnow Fully read symbol files on first access.\n\
388 --nw Do not use a window interface.\n\
390 #ifdef ADDITIONAL_OPTION_HELP
391 fputs_unfiltered (ADDITIONAL_OPTION_HELP, gdb_stdout);
393 fputs_unfiltered ("\n\
394 For more information, type \"help\" from within GDB, or consult the\n\
395 GDB manual (available as on-line info or a printed manual).\n", gdb_stdout);
401 /* Print all the junk at the top, with trailing "..." if we are about
402 to read a symbol file (possibly slowly). */
403 print_gnu_advertisement ();
404 print_gdb_version (gdb_stdout);
406 printf_filtered ("..");
408 gdb_flush (gdb_stdout); /* Force to screen during slow operations */
411 error_pre_print = "\n\n";
412 quit_pre_print = error_pre_print;
414 /* We may get more than one warning, don't double space all of them... */
415 warning_pre_print = "\nwarning: ";
417 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
418 *before* all the command line arguments are processed; it sets
419 global parameters, which are independent of what file you are
420 debugging or what directory you are in. */
421 homedir = getenv ("HOME");
424 homeinit = (char *) alloca (strlen (getenv ("HOME")) +
425 strlen (gdbinit) + 10);
426 strcpy (homeinit, getenv ("HOME"));
427 strcat (homeinit, "/");
428 strcat (homeinit, gdbinit);
430 if (!inhibit_gdbinit)
432 if (!SET_TOP_LEVEL ())
433 source_command (homeinit, 0);
435 do_cleanups (ALL_CLEANUPS);
437 /* Do stats; no need to do them elsewhere since we'll only
438 need them if homedir is set. Make sure that they are
439 zero in case one of them fails (this guarantees that they
440 won't match if either exists). */
442 memset (&homebuf, 0, sizeof (struct stat));
443 memset (&cwdbuf, 0, sizeof (struct stat));
445 stat (homeinit, &homebuf);
446 stat (gdbinit, &cwdbuf); /* We'll only need this if
450 /* Now perform all the actions indicated by the arguments. */
453 if (!SET_TOP_LEVEL ())
455 cd_command (cdarg, 0);
458 do_cleanups (ALL_CLEANUPS);
460 for (i = 0; i < ndir; i++)
461 if (!SET_TOP_LEVEL ())
462 directory_command (dirarg[i], 0);
464 do_cleanups (ALL_CLEANUPS);
468 && STREQ (execarg, symarg))
470 /* The exec file and the symbol-file are the same. If we can't open
471 it, better only print one error message. */
472 if (!SET_TOP_LEVEL ())
474 exec_file_command (execarg, !batch);
475 symbol_file_command (symarg, 0);
481 if (!SET_TOP_LEVEL ())
482 exec_file_command (execarg, !batch);
484 if (!SET_TOP_LEVEL ())
485 symbol_file_command (symarg, 0);
487 do_cleanups (ALL_CLEANUPS);
489 /* After the symbol file has been read, print a newline to get us
490 beyond the copyright line... But errors should still set off
491 the error message with a (single) blank line. */
493 printf_filtered ("\n");
494 error_pre_print = "\n";
495 quit_pre_print = error_pre_print;
496 warning_pre_print = "\nwarning: ";
499 if (!SET_TOP_LEVEL ())
500 core_file_command (corearg, !batch);
501 else if (isdigit (corearg[0]) && !SET_TOP_LEVEL ())
502 attach_command (corearg, !batch);
503 do_cleanups (ALL_CLEANUPS);
506 if (!SET_TOP_LEVEL ())
507 tty_command (ttyarg, !batch);
508 do_cleanups (ALL_CLEANUPS);
510 #ifdef ADDITIONAL_OPTION_HANDLER
511 ADDITIONAL_OPTION_HANDLER;
514 /* Error messages should no longer be distinguished with extra output. */
515 error_pre_print = NULL;
516 quit_pre_print = NULL;
517 warning_pre_print = "warning: ";
519 /* Read the .gdbinit file in the current directory, *if* it isn't
520 the same as the $HOME/.gdbinit file (it should exist, also). */
523 || memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat)))
524 if (!inhibit_gdbinit)
526 if (!SET_TOP_LEVEL ())
527 source_command (gdbinit, 0);
529 do_cleanups (ALL_CLEANUPS);
531 for (i = 0; i < ncmd; i++)
533 if (!SET_TOP_LEVEL ())
535 if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0')
536 read_command_file (stdin);
538 source_command (cmdarg[i], !batch);
539 do_cleanups (ALL_CLEANUPS);
544 /* Read in the old history after all the command files have been read. */
549 /* We have hit the end of the batch file. */
553 /* Do any host- or target-specific hacks. This is used for i960 targets
554 to force the user to set a nindy target and spec its parameters. */
556 #ifdef BEFORE_MAIN_LOOP_HOOK
557 BEFORE_MAIN_LOOP_HOOK;
560 END_PROGRESS (argv[0]);
562 /* Show time and/or space usage. */
566 long init_time = get_run_time () - time_at_startup;
568 printf_unfiltered ("Startup time: %ld.%06ld\n",
569 init_time / 1000000, init_time % 1000000);
575 extern char **environ;
576 char *lim = (char *) sbrk (0);
578 printf_unfiltered ("Startup size: data size %ld\n",
579 (long) (lim - (char *) &environ));
583 /* The default command loop.
584 The WIN32 Gui calls this main to set up gdb's state, and
585 has its own command loop. */
589 if (!SET_TOP_LEVEL ())
591 do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */
592 /* GUIs generally have their own command loop, mainloop, or whatever.
593 This is a good place to gain control because many error
594 conditions will end up here via longjmp(). */
595 if (command_loop_hook)
596 command_loop_hook ();
599 quit_command ((char *)0, instream == stdin);
603 /* No exit -- exit is through quit_command. */
614 proc_remove_foreign (pid)
620 fputs_unfiltered (linebuffer, stream)
621 const char *linebuffer;
624 if (fputs_unfiltered_hook)
626 /* FIXME: I think we should only be doing this for stdout or stderr.
627 Either that or we should be passing stream to the hook so it can
628 deal with it. If that is cleaned up, this function can go back
629 into utils.c and the fputs_unfiltered_hook can replace the current
630 ability to avoid this function by not linking with main.c. */
631 fputs_unfiltered_hook (linebuffer, stream);
635 fputs (linebuffer, stream);