1 /* Top level stuff for GDB, the GNU debugger.
2 Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
26 #include "call-cmds.h"
30 #include <sys/types.h>
35 /* R_OK lives in either unistd.h or sys/file.h. */
43 /* Temporary variable for SET_TOP_LEVEL. */
44 static int top_level_val;
46 /* Do a setjmp on error_return and quit_return. catch_errors is
47 generally a cleaner way to do this, but main() would look pretty
48 ugly if it had to use catch_errors each time. */
50 #define SET_TOP_LEVEL() \
51 (((top_level_val = setjmp (error_return)) \
52 ? (PTR) 0 : (PTR) memcpy (quit_return, error_return, sizeof (jmp_buf))) \
55 extern void gdb_init PARAMS ((void));
66 /* Pointers to various arguments from command line. */
73 /* These are static so that we can take their address in an initializer. */
74 static int print_help;
75 static int print_version;
77 /* Pointers to all arguments of --command option. */
79 /* Allocated size of cmdarg. */
81 /* Number of elements of cmdarg used. */
84 /* Indices of all arguments of --directory option. */
88 /* Number of elements used. */
91 struct stat homebuf, cwdbuf;
92 char *homedir, *homeinit;
96 /* start-sanitize-mpw */
98 /* Drop into MacsBug, but only if the executable is specially named. */
99 if (strcmp(argv[0], "DEBUGGDB") == 0)
100 DebugStr("\pat start of GDB main");
101 /* Do all Mac-specific setup. */
104 /* end-sanitize-mpw */
105 /* This needs to happen before the first use of malloc. */
106 init_malloc ((PTR) NULL);
108 #if defined (ALIGN_STACK_ON_STARTUP)
109 i = (int) &count & 0x3;
114 /* If error() is called from initialization code, just exit */
115 if (SET_TOP_LEVEL ()) {
120 cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg));
123 dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
127 line = (char *) xmalloc (linesize);
128 line[0] = '\0'; /* Terminate saved (now empty) cmd line */
131 getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
132 current_directory = gdb_dirbuf;
134 /* Parse arguments and options. */
137 /* When var field is 0, use flag field to record the equivalent
138 short option (or arbitrary numbers starting at 10 for those
139 with no equivalent). */
140 static struct option long_options[] =
142 {"readnow", no_argument, &readnow_symbol_files, 1},
143 {"r", no_argument, &readnow_symbol_files, 1},
144 {"mapped", no_argument, &mapped_symbol_files, 1},
145 {"m", no_argument, &mapped_symbol_files, 1},
146 {"quiet", no_argument, &quiet, 1},
147 {"q", no_argument, &quiet, 1},
148 {"silent", no_argument, &quiet, 1},
149 {"nx", no_argument, &inhibit_gdbinit, 1},
150 {"n", no_argument, &inhibit_gdbinit, 1},
151 {"batch", no_argument, &batch, 1},
152 {"epoch", no_argument, &epoch_interface, 1},
154 /* This is a synonym for "--annotate=1". --annotate is now preferred,
155 but keep this here for a long time because people will be running
156 emacses which use --fullname. */
157 {"fullname", no_argument, 0, 'f'},
158 {"f", no_argument, 0, 'f'},
160 {"annotate", required_argument, 0, 12},
161 {"help", no_argument, &print_help, 1},
162 {"se", required_argument, 0, 10},
163 {"symbols", required_argument, 0, 's'},
164 {"s", required_argument, 0, 's'},
165 {"exec", required_argument, 0, 'e'},
166 {"e", required_argument, 0, 'e'},
167 {"core", required_argument, 0, 'c'},
168 {"c", required_argument, 0, 'c'},
169 {"command", required_argument, 0, 'x'},
170 {"version", no_argument, &print_version, 1},
171 {"x", required_argument, 0, 'x'},
172 {"directory", required_argument, 0, 'd'},
173 {"cd", required_argument, 0, 11},
174 {"tty", required_argument, 0, 't'},
175 {"baud", required_argument, 0, 'b'},
176 {"b", required_argument, 0, 'b'},
177 /* Allow machine descriptions to add more options... */
178 #ifdef ADDITIONAL_OPTIONS
181 {0, no_argument, 0, 0},
188 c = getopt_long_only (argc, argv, "",
189 long_options, &option_index);
193 /* Long option that takes an argument. */
194 if (c == 0 && long_options[option_index].flag == 0)
195 c = long_options[option_index].val;
200 /* Long option that just sets a flag. */
210 /* FIXME: what if the syntax is wrong (e.g. not digits)? */
211 annotation_level = atoi (optarg);
214 annotation_level = 1;
226 cmdarg[ncmd++] = optarg;
230 cmdarg = (char **) xrealloc ((char *)cmdarg,
231 cmdsize * sizeof (*cmdarg));
235 dirarg[ndir++] = optarg;
239 dirarg = (char **) xrealloc ((char *)dirarg,
240 dirsize * sizeof (*dirarg));
254 i = strtol (optarg, &p, 0);
255 if (i == 0 && p == optarg)
257 /* Don't use *_filtered or warning() (which relies on
258 current_target) until after initialize_all_files(). */
262 "warning: could not set baud rate to `%s'.\n", optarg);
268 #ifdef ADDITIONAL_OPTION_CASES
269 ADDITIONAL_OPTION_CASES
272 fprintf_unfiltered (gdb_stderr,
273 "Use `%s --help' for a complete list of options.\n",
279 /* OK, that's all the options. The other arguments are filenames. */
281 for (; optind < argc; optind++)
285 symarg = argv[optind];
286 execarg = argv[optind];
289 corearg = argv[optind];
292 fprintf_unfiltered (gdb_stderr,
293 "Excess command line arguments ignored. (%s%s)\n",
294 argv[optind], (optind == argc - 1) ? "" : " ...");
303 /* Do these (and anything which might call wrap_here or *_filtered)
304 after initialize_all_files. */
307 print_gdb_version (gdb_stdout);
309 printf_filtered ("\n");
315 /* --version is intentionally not documented here, because we
316 are printing the version here, and the help is long enough
319 print_gdb_version (gdb_stdout);
320 /* Make sure the output gets printed. */
322 printf_filtered ("\n");
324 /* But don't use *_filtered here. We don't want to prompt for continue
325 no matter how small the screen or how much we're going to print. */
326 /* start-sanitize-mpw */
327 /* For reasons too ugly to describe... */
329 fputs_unfiltered ("This is the GNU debugger.\n", gdb_stdout);
331 /* end-sanitize-mpw */
333 This is the GNU debugger. Usage:\n\
334 gdb [options] [executable-file [core-file or process-id]]\n\
336 --help Print this message.\n\
337 --quiet Do not print version number on startup.\n\
338 --fullname Output information used by emacs-GDB interface.\n\
339 --epoch Output information used by epoch emacs-GDB interface.\n\
340 --batch Exit after processing options.\n\
341 --nx Do not read .gdbinit file.\n\
342 --tty=TTY Use TTY for input/output by the program being debugged.\n\
343 --cd=DIR Change current directory to DIR.\n\
344 --directory=DIR Search for source files in DIR.\n\
345 --command=FILE Execute GDB commands from FILE.\n\
346 --symbols=SYMFILE Read symbols from SYMFILE.\n\
347 --exec=EXECFILE Use EXECFILE as the executable.\n\
348 --se=FILE Use FILE as symbol file and executable file.\n\
349 --core=COREFILE Analyze the core dump COREFILE.\n\
350 -b BAUDRATE Set serial port baud rate used for remote debugging.\n\
351 --mapped Use mapped symbol files if supported on this system.\n\
352 --readnow Fully read symbol files on first access.\n\
354 /* start-sanitize-mpw */
356 /* end-sanitize-mpw */
357 #ifdef ADDITIONAL_OPTION_HELP
358 fputs_unfiltered (ADDITIONAL_OPTION_HELP, gdb_stdout);
360 fputs_unfiltered ("\n\
361 For more information, type \"help\" from within GDB, or consult the\n\
362 GDB manual (available as on-line info or a printed manual).\n", gdb_stdout);
368 /* Print all the junk at the top, with trailing "..." if we are about
369 to read a symbol file (possibly slowly). */
370 print_gnu_advertisement ();
371 print_gdb_version (gdb_stdout);
373 printf_filtered ("..");
375 gdb_flush (gdb_stdout); /* Force to screen during slow operations */
378 error_pre_print = "\n\n";
379 /* We may get more than one warning, don't double space all of them... */
380 warning_pre_print = "\nwarning: ";
382 /* Read and execute $HOME/.gdbinit file, if it exists. This is done
383 *before* all the command line arguments are processed; it sets
384 global parameters, which are independent of what file you are
385 debugging or what directory you are in. */
386 homedir = getenv ("HOME");
389 homeinit = (char *) alloca (strlen (getenv ("HOME")) +
390 strlen (gdbinit) + 10);
391 strcpy (homeinit, getenv ("HOME"));
392 strcat (homeinit, "/");
393 strcat (homeinit, gdbinit);
394 if (!inhibit_gdbinit && access (homeinit, R_OK) == 0)
396 if (!SET_TOP_LEVEL ())
397 source_command (homeinit, 0);
399 do_cleanups (ALL_CLEANUPS);
401 /* Do stats; no need to do them elsewhere since we'll only
402 need them if homedir is set. Make sure that they are
403 zero in case one of them fails (this guarantees that they
404 won't match if either exists). */
406 memset (&homebuf, 0, sizeof (struct stat));
407 memset (&cwdbuf, 0, sizeof (struct stat));
409 stat (homeinit, &homebuf);
410 stat (gdbinit, &cwdbuf); /* We'll only need this if
414 /* Now perform all the actions indicated by the arguments. */
417 if (!SET_TOP_LEVEL ())
419 cd_command (cdarg, 0);
422 do_cleanups (ALL_CLEANUPS);
424 for (i = 0; i < ndir; i++)
425 if (!SET_TOP_LEVEL ())
426 directory_command (dirarg[i], 0);
428 do_cleanups (ALL_CLEANUPS);
432 && STREQ (execarg, symarg))
434 /* The exec file and the symbol-file are the same. If we can't open
435 it, better only print one error message. */
436 if (!SET_TOP_LEVEL ())
438 exec_file_command (execarg, !batch);
439 symbol_file_command (symarg, 0);
445 if (!SET_TOP_LEVEL ())
446 exec_file_command (execarg, !batch);
448 if (!SET_TOP_LEVEL ())
449 symbol_file_command (symarg, 0);
451 do_cleanups (ALL_CLEANUPS);
453 /* After the symbol file has been read, print a newline to get us
454 beyond the copyright line... But errors should still set off
455 the error message with a (single) blank line. */
457 printf_filtered ("\n");
458 error_pre_print = "\n";
459 warning_pre_print = "\nwarning: ";
462 if (!SET_TOP_LEVEL ())
463 core_file_command (corearg, !batch);
464 else if (isdigit (corearg[0]) && !SET_TOP_LEVEL ())
465 attach_command (corearg, !batch);
466 do_cleanups (ALL_CLEANUPS);
469 if (!SET_TOP_LEVEL ())
470 tty_command (ttyarg, !batch);
471 do_cleanups (ALL_CLEANUPS);
473 #ifdef ADDITIONAL_OPTION_HANDLER
474 ADDITIONAL_OPTION_HANDLER;
477 /* Error messages should no longer be distinguished with extra output. */
479 warning_pre_print = "warning: ";
481 /* Read the .gdbinit file in the current directory, *if* it isn't
482 the same as the $HOME/.gdbinit file (it should exist, also). */
485 || memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat)))
486 if (!inhibit_gdbinit && access (gdbinit, R_OK) == 0)
488 if (!SET_TOP_LEVEL ())
489 source_command (gdbinit, 0);
491 do_cleanups (ALL_CLEANUPS);
493 for (i = 0; i < ncmd; i++)
495 if (!SET_TOP_LEVEL ())
497 if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0')
498 read_command_file (stdin);
500 source_command (cmdarg[i], !batch);
501 do_cleanups (ALL_CLEANUPS);
506 /* Read in the old history after all the command files have been read. */
511 /* We have hit the end of the batch file. */
515 /* Do any host- or target-specific hacks. This is used for i960 targets
516 to force the user to set a nindy target and spec its parameters. */
518 #ifdef BEFORE_MAIN_LOOP_HOOK
519 BEFORE_MAIN_LOOP_HOOK;
522 /* The command loop. */
526 if (!SET_TOP_LEVEL ())
528 do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */
529 /* start-sanitize-mpw */
531 /* If we're being a Mac application, go into a Mac-specific
532 event-handling loop instead. We still want to be inside
533 the outer loop, because that will catch longjmps resulting
534 from some command executions. */
539 /* end-sanitize-mpw */
541 quit_command ((char *)0, instream == stdin);
544 /* No exit -- exit is through quit_command. */
553 proc_wait (pid, status)
558 return wait (status);
563 proc_remove_foreign (pid)
569 fputs_unfiltered (linebuffer, stream)
570 const char *linebuffer;
573 fputs (linebuffer, stream);