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 *);
73 /* Pointers to various arguments from command line. */
80 /* These are static so that we can take their address in an initializer. */
81 static int print_help;
82 static int print_version;
84 /* Pointers to all arguments of --command option. */
86 /* Allocated size of cmdarg. */
88 /* Number of elements of cmdarg used. */
91 /* Indices of all arguments of --directory option. */
95 /* Number of elements used. */
98 struct stat homebuf, cwdbuf;
99 char *homedir, *homeinit;
103 long time_at_startup = get_run_time ();
105 START_PROGRESS (argv[0], 0);
108 /* Do all Mac-specific setup. */
112 /* This needs to happen before the first use of malloc. */
113 init_malloc ((PTR) NULL);
115 #if defined (ALIGN_STACK_ON_STARTUP)
116 i = (int) &count & 0x3;
121 /* If error() is called from initialization code, just exit */
122 if (SET_TOP_LEVEL ()) {
127 cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg));
130 dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
134 line = (char *) xmalloc (linesize);
135 line[0] = '\0'; /* Terminate saved (now empty) cmd line */
138 getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
139 current_directory = gdb_dirbuf;
141 /* Parse arguments and options. */
144 /* When var field is 0, use flag field to record the equivalent
145 short option (or arbitrary numbers starting at 10 for those
146 with no equivalent). */
147 static struct option long_options[] =
149 {"readnow", no_argument, &readnow_symbol_files, 1},
150 {"r", no_argument, &readnow_symbol_files, 1},
151 {"mapped", no_argument, &mapped_symbol_files, 1},
152 {"m", no_argument, &mapped_symbol_files, 1},
153 {"quiet", no_argument, &quiet, 1},
154 {"q", no_argument, &quiet, 1},
155 {"silent", no_argument, &quiet, 1},
156 {"nx", no_argument, &inhibit_gdbinit, 1},
157 {"n", no_argument, &inhibit_gdbinit, 1},
158 {"batch", no_argument, &batch, 1},
159 {"epoch", no_argument, &epoch_interface, 1},
161 /* This is a synonym for "--annotate=1". --annotate is now preferred,
162 but keep this here for a long time because people will be running
163 emacses which use --fullname. */
164 {"fullname", no_argument, 0, 'f'},
165 {"f", no_argument, 0, 'f'},
167 {"annotate", required_argument, 0, 12},
168 {"help", no_argument, &print_help, 1},
169 {"se", required_argument, 0, 10},
170 {"symbols", required_argument, 0, 's'},
171 {"s", required_argument, 0, 's'},
172 {"exec", required_argument, 0, 'e'},
173 {"e", required_argument, 0, 'e'},
174 {"core", required_argument, 0, 'c'},
175 {"c", required_argument, 0, 'c'},
176 {"command", required_argument, 0, 'x'},
177 {"version", no_argument, &print_version, 1},
178 {"x", required_argument, 0, 'x'},
179 {"directory", required_argument, 0, 'd'},
180 {"cd", required_argument, 0, 11},
181 {"tty", required_argument, 0, 't'},
182 {"baud", required_argument, 0, 'b'},
183 {"b", required_argument, 0, 'b'},
184 {"nw", no_argument, &use_windows, 0},
185 {"nowindows", no_argument, &use_windows, 0},
186 {"w", no_argument, &use_windows, 1},
187 {"windows", no_argument, &use_windows, 1},
188 {"statistics", no_argument, 0, 13},
189 /* Allow machine descriptions to add more options... */
190 #ifdef ADDITIONAL_OPTIONS
193 {0, no_argument, 0, 0}
200 c = getopt_long_only (argc, argv, "",
201 long_options, &option_index);
205 /* Long option that takes an argument. */
206 if (c == 0 && long_options[option_index].flag == 0)
207 c = long_options[option_index].val;
212 /* Long option that just sets a flag. */
222 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
223 annotation_level = atoi (optarg);
226 /* Enable the display of both time and space usage. */
231 annotation_level = 1;
232 /* We have probably been invoked from emacs. Disable window interface. */
245 cmdarg[ncmd++] = optarg;
249 cmdarg = (char **) xrealloc ((char *)cmdarg,
250 cmdsize * sizeof (*cmdarg));
254 dirarg[ndir++] = optarg;
258 dirarg = (char **) xrealloc ((char *)dirarg,
259 dirsize * sizeof (*dirarg));
273 i = strtol (optarg, &p, 0);
274 if (i == 0 && p == optarg)
276 /* Don't use *_filtered or warning() (which relies on
277 current_target) until after initialize_all_files(). */
281 "warning: could not set baud rate to `%s'.\n", optarg);
290 i = strtol (optarg, &p, 0);
291 if (i == 0 && p == optarg)
293 /* Don't use *_filtered or warning() (which relies on
294 current_target) until after initialize_all_files(). */
298 "warning: could not set timeout limit to `%s'.\n", optarg);
304 #ifdef ADDITIONAL_OPTION_CASES
305 ADDITIONAL_OPTION_CASES
308 fprintf_unfiltered (gdb_stderr,
309 "Use `%s --help' for a complete list of options.\n",
315 /* If --help or --version, disable window interface. */
316 if (print_help || print_version)
319 /* OK, that's all the options. The other arguments are filenames. */
321 for (; optind < argc; optind++)
325 symarg = argv[optind];
326 execarg = argv[optind];
329 corearg = argv[optind];
332 fprintf_unfiltered (gdb_stderr,
333 "Excess command line arguments ignored. (%s%s)\n",
334 argv[optind], (optind == argc - 1) ? "" : " ...");
343 /* Do these (and anything which might call wrap_here or *_filtered)
344 after initialize_all_files. */
347 print_gdb_version (gdb_stdout);
349 printf_filtered ("\n");
355 print_gdb_help (gdb_stdout);
356 fputs_unfiltered ("\n", gdb_stdout);
362 /* Print all the junk at the top, with trailing "..." if we are about
363 to read a symbol file (possibly slowly). */
364 print_gdb_version (gdb_stdout);
366 printf_filtered ("..");
368 gdb_flush (gdb_stdout); /* Force to screen during slow operations */
371 error_pre_print = "\n\n";
372 quit_pre_print = error_pre_print;
374 /* We may get more than one warning, don't double space all of them... */
375 warning_pre_print = "\nwarning: ";
377 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
378 *before* all the command line arguments are processed; it sets
379 global parameters, which are independent of what file you are
380 debugging or what directory you are in. */
383 char * tmp = getenv ("HOME");
387 homedir = (char *) alloca (MAX_PATH+1);
388 cygwin32_conv_to_posix_path (tmp, homedir);
394 homedir = getenv ("HOME");
398 homeinit = (char *) alloca (strlen (homedir) +
399 strlen (gdbinit) + 10);
400 strcpy (homeinit, homedir);
401 strcat (homeinit, "/");
402 strcat (homeinit, gdbinit);
404 if (!inhibit_gdbinit)
406 if (!SET_TOP_LEVEL ())
407 source_command (homeinit, 0);
409 do_cleanups (ALL_CLEANUPS);
411 /* Do stats; no need to do them elsewhere since we'll only
412 need them if homedir is set. Make sure that they are
413 zero in case one of them fails (this guarantees that they
414 won't match if either exists). */
416 memset (&homebuf, 0, sizeof (struct stat));
417 memset (&cwdbuf, 0, sizeof (struct stat));
419 stat (homeinit, &homebuf);
420 stat (gdbinit, &cwdbuf); /* We'll only need this if
424 /* Now perform all the actions indicated by the arguments. */
427 if (!SET_TOP_LEVEL ())
429 cd_command (cdarg, 0);
432 do_cleanups (ALL_CLEANUPS);
434 for (i = 0; i < ndir; i++)
435 if (!SET_TOP_LEVEL ())
436 directory_command (dirarg[i], 0);
438 do_cleanups (ALL_CLEANUPS);
442 && STREQ (execarg, symarg))
444 /* The exec file and the symbol-file are the same. If we can't open
445 it, better only print one error message. */
446 if (!SET_TOP_LEVEL ())
448 exec_file_command (execarg, !batch);
449 symbol_file_command (symarg, 0);
455 if (!SET_TOP_LEVEL ())
456 exec_file_command (execarg, !batch);
458 if (!SET_TOP_LEVEL ())
459 symbol_file_command (symarg, 0);
461 do_cleanups (ALL_CLEANUPS);
463 /* After the symbol file has been read, print a newline to get us
464 beyond the copyright line... But errors should still set off
465 the error message with a (single) blank line. */
467 printf_filtered ("\n");
468 error_pre_print = "\n";
469 quit_pre_print = error_pre_print;
470 warning_pre_print = "\nwarning: ";
473 if (!SET_TOP_LEVEL ())
474 core_file_command (corearg, !batch);
475 else if (isdigit (corearg[0]) && !SET_TOP_LEVEL ())
476 attach_command (corearg, !batch);
477 do_cleanups (ALL_CLEANUPS);
480 if (!SET_TOP_LEVEL ())
481 tty_command (ttyarg, !batch);
482 do_cleanups (ALL_CLEANUPS);
484 #ifdef ADDITIONAL_OPTION_HANDLER
485 ADDITIONAL_OPTION_HANDLER;
488 /* Error messages should no longer be distinguished with extra output. */
489 error_pre_print = NULL;
490 quit_pre_print = NULL;
491 warning_pre_print = "warning: ";
493 /* Read the .gdbinit file in the current directory, *if* it isn't
494 the same as the $HOME/.gdbinit file (it should exist, also). */
497 || memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat)))
498 if (!inhibit_gdbinit)
500 if (!SET_TOP_LEVEL ())
501 source_command (gdbinit, 0);
503 do_cleanups (ALL_CLEANUPS);
505 for (i = 0; i < ncmd; i++)
507 if (!SET_TOP_LEVEL ())
509 if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0')
510 read_command_file (stdin);
512 source_command (cmdarg[i], !batch);
513 do_cleanups (ALL_CLEANUPS);
518 /* Read in the old history after all the command files have been read. */
523 /* We have hit the end of the batch file. */
527 /* Do any host- or target-specific hacks. This is used for i960 targets
528 to force the user to set a nindy target and spec its parameters. */
530 #ifdef BEFORE_MAIN_LOOP_HOOK
531 BEFORE_MAIN_LOOP_HOOK;
534 END_PROGRESS (argv[0]);
536 /* Show time and/or space usage. */
540 long init_time = get_run_time () - time_at_startup;
542 printf_unfiltered ("Startup time: %ld.%06ld\n",
543 init_time / 1000000, init_time % 1000000);
549 extern char **environ;
550 char *lim = (char *) sbrk (0);
552 printf_unfiltered ("Startup size: data size %ld\n",
553 (long) (lim - (char *) &environ));
557 /* The default command loop.
558 The WIN32 Gui calls this main to set up gdb's state, and
559 has its own command loop. */
560 #if !defined _WIN32 || defined __GNUC__
563 if (!SET_TOP_LEVEL ())
565 do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */
566 /* GUIs generally have their own command loop, mainloop, or whatever.
567 This is a good place to gain control because many error
568 conditions will end up here via longjmp(). */
569 if (command_loop_hook)
570 command_loop_hook ();
573 quit_command ((char *)0, instream == stdin);
577 /* No exit -- exit is through quit_command. */
582 /* Don't use *_filtered for printing help. We don't want to prompt
583 for continue no matter how small the screen or how much we're going
587 print_gdb_help (stream)
591 This is the GNU debugger. Usage:\n\n\
592 gdb [options] [executable-file [core-file or process-id]]\n\n\
596 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
597 --batch Exit after processing options.\n\
598 --cd=DIR Change current directory to DIR.\n\
599 --command=FILE Execute GDB commands from FILE.\n\
600 --core=COREFILE Analyze the core dump COREFILE.\n\
603 --directory=DIR Search for source files in DIR.\n\
604 --epoch Output information used by epoch emacs-GDB interface.\n\
605 --exec=EXECFILE Use EXECFILE as the executable.\n\
606 --fullname Output information used by emacs-GDB interface.\n\
607 --help Print this message.\n\
610 --mapped Use mapped symbol files if supported on this system.\n\
611 --nw Do not use a window interface.\n\
612 --nx Do not read .gdbinit file.\n\
613 --quiet Do not print version number on startup.\n\
614 --readnow Fully read symbol files on first access.\n\
617 --se=FILE Use FILE as symbol file and executable file.\n\
618 --symbols=SYMFILE Read symbols from SYMFILE.\n\
619 --tty=TTY Use TTY for input/output by the program being debugged.\n\
620 --version Print version information and then exit.\n\
622 #ifdef ADDITIONAL_OPTION_HELP
623 fputs_unfiltered (ADDITIONAL_OPTION_HELP, stream);
625 fputs_unfiltered ("\n\
626 For more information, type \"help\" from within GDB, or consult the\n\
627 GDB manual (available as on-line info or a printed manual).\n\
639 proc_remove_foreign (pid)
644 /* All I/O sent to the *_filtered and *_unfiltered functions eventually ends up
645 here. The fputs_unfiltered_hook is primarily used by GUIs to collect all
646 output and send it to the GUI, instead of the controlling terminal. Only
647 output to gdb_stdout and gdb_stderr are sent to the hook. Everything else
648 is sent on to fputs to allow file I/O to be handled appropriately. */
651 fputs_unfiltered (linebuffer, stream)
652 const char *linebuffer;
655 if (fputs_unfiltered_hook
656 && (stream == gdb_stdout
657 || stream == gdb_stderr))
658 fputs_unfiltered_hook (linebuffer, stream);
660 fputs (linebuffer, stream);