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 = SIGSETJMP (error_return)) \
46 ? (PTR) 0 : (PTR) memcpy (quit_return, error_return, sizeof (SIGJMP_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 static void print_gdb_help PARAMS ((GDB_FILE *));
58 extern void gdb_init PARAMS ((char *));
60 #include <windows.h> /* for MAX_PATH */
61 extern void cygwin32_conv_to_posix_path (const char *, char *);
64 extern void (*pre_add_symbol_hook) PARAMS ((char *));
65 extern void (*post_add_symbol_hook) PARAMS ((void));
76 /* Pointers to various arguments from command line. */
83 /* These are static so that we can take their address in an initializer. */
84 static int print_help;
85 static int print_version;
87 /* Pointers to all arguments of --command option. */
89 /* Allocated size of cmdarg. */
91 /* Number of elements of cmdarg used. */
94 /* Indices of all arguments of --directory option. */
98 /* Number of elements used. */
101 struct stat homebuf, cwdbuf;
102 char *homedir, *homeinit;
106 long time_at_startup = get_run_time ();
108 START_PROGRESS (argv[0], 0);
111 /* Do all Mac-specific setup. */
115 /* This needs to happen before the first use of malloc. */
116 init_malloc ((PTR) NULL);
118 #if defined (ALIGN_STACK_ON_STARTUP)
119 i = (int) &count & 0x3;
124 /* If error() is called from initialization code, just exit */
125 if (SET_TOP_LEVEL ()) {
130 cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg));
133 dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
137 line = (char *) xmalloc (linesize);
138 line[0] = '\0'; /* Terminate saved (now empty) cmd line */
141 getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
142 current_directory = gdb_dirbuf;
144 /* Parse arguments and options. */
147 /* When var field is 0, use flag field to record the equivalent
148 short option (or arbitrary numbers starting at 10 for those
149 with no equivalent). */
150 static struct option long_options[] =
152 {"readnow", no_argument, &readnow_symbol_files, 1},
153 {"r", no_argument, &readnow_symbol_files, 1},
154 {"mapped", no_argument, &mapped_symbol_files, 1},
155 {"m", no_argument, &mapped_symbol_files, 1},
156 {"quiet", no_argument, &quiet, 1},
157 {"q", no_argument, &quiet, 1},
158 {"silent", no_argument, &quiet, 1},
159 {"nx", no_argument, &inhibit_gdbinit, 1},
160 {"n", no_argument, &inhibit_gdbinit, 1},
161 {"batch", no_argument, &batch, 1},
162 {"epoch", no_argument, &epoch_interface, 1},
164 /* This is a synonym for "--annotate=1". --annotate is now preferred,
165 but keep this here for a long time because people will be running
166 emacses which use --fullname. */
167 {"fullname", no_argument, 0, 'f'},
168 {"f", no_argument, 0, 'f'},
170 {"annotate", required_argument, 0, 12},
171 {"help", no_argument, &print_help, 1},
172 {"se", required_argument, 0, 10},
173 {"symbols", required_argument, 0, 's'},
174 {"s", required_argument, 0, 's'},
175 {"exec", required_argument, 0, 'e'},
176 {"e", required_argument, 0, 'e'},
177 {"core", required_argument, 0, 'c'},
178 {"c", required_argument, 0, 'c'},
179 {"command", required_argument, 0, 'x'},
180 {"version", no_argument, &print_version, 1},
181 {"x", required_argument, 0, 'x'},
182 /* start-sanitize-gdbtk */
183 {"tclcommand", required_argument, 0, 'z'},
184 /* end-sanitize-gdbtk */
185 {"directory", required_argument, 0, 'd'},
186 {"cd", required_argument, 0, 11},
187 {"tty", required_argument, 0, 't'},
188 {"baud", required_argument, 0, 'b'},
189 {"b", required_argument, 0, 'b'},
190 {"nw", no_argument, &use_windows, 0},
191 {"nowindows", no_argument, &use_windows, 0},
192 {"w", no_argument, &use_windows, 1},
193 {"windows", no_argument, &use_windows, 1},
194 {"statistics", no_argument, 0, 13},
195 /* Allow machine descriptions to add more options... */
196 #ifdef ADDITIONAL_OPTIONS
199 {0, no_argument, 0, 0}
206 c = getopt_long_only (argc, argv, "",
207 long_options, &option_index);
211 /* Long option that takes an argument. */
212 if (c == 0 && long_options[option_index].flag == 0)
213 c = long_options[option_index].val;
218 /* Long option that just sets a flag. */
228 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
229 annotation_level = atoi (optarg);
232 /* Enable the display of both time and space usage. */
237 annotation_level = 1;
238 /* We have probably been invoked from emacs. Disable window interface. */
251 cmdarg[ncmd++] = optarg;
255 cmdarg = (char **) xrealloc ((char *)cmdarg,
256 cmdsize * sizeof (*cmdarg));
259 /* start-sanitize-gdbtk */
262 extern int gdbtk_test PARAMS ((char *));
263 if (!gdbtk_test (optarg))
265 fprintf_unfiltered (gdb_stderr, "%s: unable to load tclcommand file \"%s\"",
271 /* end-sanitize-gdbtk */
273 dirarg[ndir++] = optarg;
277 dirarg = (char **) xrealloc ((char *)dirarg,
278 dirsize * sizeof (*dirarg));
292 i = strtol (optarg, &p, 0);
293 if (i == 0 && p == optarg)
295 /* Don't use *_filtered or warning() (which relies on
296 current_target) until after initialize_all_files(). */
300 "warning: could not set baud rate to `%s'.\n", optarg);
309 i = strtol (optarg, &p, 0);
310 if (i == 0 && p == optarg)
312 /* Don't use *_filtered or warning() (which relies on
313 current_target) until after initialize_all_files(). */
317 "warning: could not set timeout limit to `%s'.\n", optarg);
323 #ifdef ADDITIONAL_OPTION_CASES
324 ADDITIONAL_OPTION_CASES
327 fprintf_unfiltered (gdb_stderr,
328 "Use `%s --help' for a complete list of options.\n",
334 /* If --help or --version, disable window interface. */
335 if (print_help || print_version)
338 /* OK, that's all the options. The other arguments are filenames. */
340 for (; optind < argc; optind++)
344 symarg = argv[optind];
345 execarg = argv[optind];
348 corearg = argv[optind];
351 fprintf_unfiltered (gdb_stderr,
352 "Excess command line arguments ignored. (%s%s)\n",
353 argv[optind], (optind == argc - 1) ? "" : " ...");
362 /* Do these (and anything which might call wrap_here or *_filtered)
363 after initialize_all_files. */
366 print_gdb_version (gdb_stdout);
368 printf_filtered ("\n");
374 print_gdb_help (gdb_stdout);
375 fputs_unfiltered ("\n", gdb_stdout);
381 /* Print all the junk at the top, with trailing "..." if we are about
382 to read a symbol file (possibly slowly). */
383 print_gdb_version (gdb_stdout);
385 printf_filtered ("..");
387 gdb_flush (gdb_stdout); /* Force to screen during slow operations */
390 error_pre_print = "\n\n";
391 quit_pre_print = error_pre_print;
393 /* We may get more than one warning, don't double space all of them... */
394 warning_pre_print = "\nwarning: ";
396 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
397 *before* all the command line arguments are processed; it sets
398 global parameters, which are independent of what file you are
399 debugging or what directory you are in. */
402 char * tmp = getenv ("HOME");
406 homedir = (char *) alloca (MAX_PATH+1);
407 cygwin32_conv_to_posix_path (tmp, homedir);
413 homedir = getenv ("HOME");
417 homeinit = (char *) alloca (strlen (homedir) +
418 strlen (gdbinit) + 10);
419 strcpy (homeinit, homedir);
420 strcat (homeinit, "/");
421 strcat (homeinit, gdbinit);
423 if (!inhibit_gdbinit)
425 if (!SET_TOP_LEVEL ())
426 source_command (homeinit, 0);
428 do_cleanups (ALL_CLEANUPS);
430 /* Do stats; no need to do them elsewhere since we'll only
431 need them if homedir is set. Make sure that they are
432 zero in case one of them fails (this guarantees that they
433 won't match if either exists). */
435 memset (&homebuf, 0, sizeof (struct stat));
436 memset (&cwdbuf, 0, sizeof (struct stat));
438 stat (homeinit, &homebuf);
439 stat (gdbinit, &cwdbuf); /* We'll only need this if
443 /* Now perform all the actions indicated by the arguments. */
446 if (!SET_TOP_LEVEL ())
448 cd_command (cdarg, 0);
451 do_cleanups (ALL_CLEANUPS);
453 for (i = 0; i < ndir; i++)
454 if (!SET_TOP_LEVEL ())
455 directory_command (dirarg[i], 0);
457 do_cleanups (ALL_CLEANUPS);
461 && STREQ (execarg, symarg))
463 /* The exec file and the symbol-file are the same. If we can't open
464 it, better only print one error message. */
465 if (!SET_TOP_LEVEL ())
467 if (pre_add_symbol_hook)
468 pre_add_symbol_hook (symarg);
469 exec_file_command (execarg, !batch);
470 symbol_file_command (symarg, 0);
471 if (post_add_symbol_hook)
472 post_add_symbol_hook ();
478 if (!SET_TOP_LEVEL ())
479 exec_file_command (execarg, !batch);
481 if (!SET_TOP_LEVEL ())
482 symbol_file_command (symarg, 0);
484 do_cleanups (ALL_CLEANUPS);
486 /* After the symbol file has been read, print a newline to get us
487 beyond the copyright line... But errors should still set off
488 the error message with a (single) blank line. */
490 printf_filtered ("\n");
491 error_pre_print = "\n";
492 quit_pre_print = error_pre_print;
493 warning_pre_print = "\nwarning: ";
496 if (!SET_TOP_LEVEL ())
497 core_file_command (corearg, !batch);
498 else if (isdigit (corearg[0]) && !SET_TOP_LEVEL ())
499 attach_command (corearg, !batch);
500 do_cleanups (ALL_CLEANUPS);
503 if (!SET_TOP_LEVEL ())
504 tty_command (ttyarg, !batch);
505 do_cleanups (ALL_CLEANUPS);
507 #ifdef ADDITIONAL_OPTION_HANDLER
508 ADDITIONAL_OPTION_HANDLER;
511 /* Error messages should no longer be distinguished with extra output. */
512 error_pre_print = NULL;
513 quit_pre_print = NULL;
514 warning_pre_print = "warning: ";
516 /* Read the .gdbinit file in the current directory, *if* it isn't
517 the same as the $HOME/.gdbinit file (it should exist, also). */
520 || memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat)))
521 if (!inhibit_gdbinit)
523 if (!SET_TOP_LEVEL ())
524 source_command (gdbinit, 0);
526 do_cleanups (ALL_CLEANUPS);
528 for (i = 0; i < ncmd; i++)
530 if (!SET_TOP_LEVEL ())
532 if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0')
533 read_command_file (stdin);
535 source_command (cmdarg[i], !batch);
536 do_cleanups (ALL_CLEANUPS);
541 /* Read in the old history after all the command files have been read. */
546 /* We have hit the end of the batch file. */
550 /* Do any host- or target-specific hacks. This is used for i960 targets
551 to force the user to set a nindy target and spec its parameters. */
553 #ifdef BEFORE_MAIN_LOOP_HOOK
554 BEFORE_MAIN_LOOP_HOOK;
557 END_PROGRESS (argv[0]);
559 /* Show time and/or space usage. */
563 long init_time = get_run_time () - time_at_startup;
565 printf_unfiltered ("Startup time: %ld.%06ld\n",
566 init_time / 1000000, init_time % 1000000);
572 extern char **environ;
573 char *lim = (char *) sbrk (0);
575 printf_unfiltered ("Startup size: data size %ld\n",
576 (long) (lim - (char *) &environ));
580 /* The default command loop.
581 The WIN32 Gui calls this main to set up gdb's state, and
582 has its own command loop. */
583 #if !defined _WIN32 || defined __GNUC__
586 if (!SET_TOP_LEVEL ())
588 do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */
589 /* GUIs generally have their own command loop, mainloop, or whatever.
590 This is a good place to gain control because many error
591 conditions will end up here via longjmp(). */
592 if (command_loop_hook)
593 command_loop_hook ();
596 quit_command ((char *)0, instream == stdin);
600 /* No exit -- exit is through quit_command. */
605 /* Don't use *_filtered for printing help. We don't want to prompt
606 for continue no matter how small the screen or how much we're going
610 print_gdb_help (stream)
614 This is the GNU debugger. Usage:\n\n\
615 gdb [options] [executable-file [core-file or process-id]]\n\n\
619 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
620 --batch Exit after processing options.\n\
621 --cd=DIR Change current directory to DIR.\n\
622 --command=FILE Execute GDB commands from FILE.\n\
623 --core=COREFILE Analyze the core dump COREFILE.\n\
626 --directory=DIR Search for source files in DIR.\n\
627 --epoch Output information used by epoch emacs-GDB interface.\n\
628 --exec=EXECFILE Use EXECFILE as the executable.\n\
629 --fullname Output information used by emacs-GDB interface.\n\
630 --help Print this message.\n\
633 --mapped Use mapped symbol files if supported on this system.\n\
634 --nw Do not use a window interface.\n\
635 --nx Do not read .gdbinit file.\n\
636 --quiet Do not print version number on startup.\n\
637 --readnow Fully read symbol files on first access.\n\
640 --se=FILE Use FILE as symbol file and executable file.\n\
641 --symbols=SYMFILE Read symbols from SYMFILE.\n\
642 --tty=TTY Use TTY for input/output by the program being debugged.\n\
643 --version Print version information and then exit.\n\
645 #ifdef ADDITIONAL_OPTION_HELP
646 fputs_unfiltered (ADDITIONAL_OPTION_HELP, stream);
648 fputs_unfiltered ("\n\
649 For more information, type \"help\" from within GDB, or consult the\n\
650 GDB manual (available as on-line info or a printed manual).\n\
651 Report bugs to \"bug-gdb@prep.ai.mit.edu\".\
662 proc_remove_foreign (pid)
667 /* All I/O sent to the *_filtered and *_unfiltered functions eventually ends up
668 here. The fputs_unfiltered_hook is primarily used by GUIs to collect all
669 output and send it to the GUI, instead of the controlling terminal. Only
670 output to gdb_stdout and gdb_stderr are sent to the hook. Everything else
671 is sent on to fputs to allow file I/O to be handled appropriately. */
674 fputs_unfiltered (linebuffer, stream)
675 const char *linebuffer;
678 if (fputs_unfiltered_hook
679 && (stream == gdb_stdout
680 || stream == gdb_stderr))
681 fputs_unfiltered_hook (linebuffer, stream);
683 fputs (linebuffer, stream);