emacs.c 64.6 KB
Newer Older
Jim Blandy's avatar
Jim Blandy committed
1
/* Fully extensible Emacs, running on Unix, intended for GNU.
2
   Copyright (C) 1985,86,87,93,94,95,97,98,1999,2001,2002
3
      Free Software Foundation, Inc.
Jim Blandy's avatar
Jim Blandy committed
4 5 6 7 8

This file is part of GNU Emacs.

GNU Emacs is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
9
the Free Software Foundation; either version 2, or (at your option)
Jim Blandy's avatar
Jim Blandy committed
10 11 12 13 14 15 16 17 18
any later version.

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING.  If not, write to
Richard M. Stallman's avatar
Richard M. Stallman committed
19 20
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */
Jim Blandy's avatar
Jim Blandy committed
21 22


23
#include <config.h>
Jim Blandy's avatar
Jim Blandy committed
24 25 26 27 28 29 30 31 32 33 34
#include <signal.h>
#include <errno.h>
#include <stdio.h>

#include <sys/types.h>
#include <sys/file.h>

#ifdef VMS
#include <ssdef.h>
#endif

35 36 37 38
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

39
#ifdef BSD_SYSTEM
Jim Blandy's avatar
Jim Blandy committed
40 41 42 43 44
#include <sys/ioctl.h>
#endif

#include "lisp.h"
#include "commands.h"
Joseph Arceneaux's avatar
Joseph Arceneaux committed
45
#include "intervals.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
46
#include "buffer.h"
Jim Blandy's avatar
Jim Blandy committed
47

48
#include "systty.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
49
#include "blockinput.h"
50
#include "syssignal.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
51
#include "process.h"
52
#include "termhooks.h"
Andreas Schwab's avatar
Andreas Schwab committed
53
#include "keyboard.h"
Stefan Monnier's avatar
Stefan Monnier committed
54
#include "keymap.h"
Jim Blandy's avatar
Jim Blandy committed
55

56 57 58 59
#ifdef HAVE_SETLOCALE
#include <locale.h>
#endif

60 61 62 63 64
#ifdef HAVE_SETRLIMIT
#include <sys/time.h>
#include <sys/resource.h>
#endif

Jim Blandy's avatar
Jim Blandy committed
65 66 67 68
#ifndef O_RDWR
#define O_RDWR 2
#endif

69
#ifdef HAVE_SETPGID
70
#if !defined (USG) || defined (BSD_PGRPS)
71
#undef setpgrp
72 73
#define setpgrp setpgid
#endif
74
#endif
75

76 77
extern void malloc_warning P_ ((char *));
extern void set_time_zone_rule P_ ((char *));
Gerd Moellmann's avatar
Gerd Moellmann committed
78 79 80
#ifdef HAVE_INDEX
extern char *index P_ ((const char *, int));
#endif
81

82 83 84 85 86 87 88 89
/* Make these values available in GDB, which doesn't see macros.  */

EMACS_INT gdb_valbits = VALBITS;
EMACS_INT gdb_gctypebits = GCTYPEBITS;
EMACS_INT gdb_emacs_intbits = sizeof (EMACS_INT) * BITS_PER_CHAR;
#ifdef DATA_SEG_BITS
EMACS_INT gdb_data_seg_bits = DATA_SEG_BITS;
#else
90
EMACS_INT gdb_data_seg_bits = 0;
91
#endif
Gerd Moellmann's avatar
Gerd Moellmann committed
92
EMACS_INT PVEC_FLAG = PSEUDOVECTOR_FLAG;
93

Pavel Janík's avatar
Pavel Janík committed
94
/* Command line args from shell, as list of strings.  */
Jim Blandy's avatar
Jim Blandy committed
95 96
Lisp_Object Vcommand_line_args;

97 98 99 100
/* The name under which Emacs was invoked, with any leading directory
   names discarded.  */
Lisp_Object Vinvocation_name;

101 102 103
/* The directory name from which Emacs was invoked.  */
Lisp_Object Vinvocation_directory;

104 105 106 107
/* The directory name in which to find subdirs such as lisp and etc.
   nil means get them only from PATH_LOADSEARCH.  */
Lisp_Object Vinstallation_directory;

Jim Blandy's avatar
Jim Blandy committed
108 109 110
/* Hook run by `kill-emacs' before it does really anything.  */
Lisp_Object Vkill_emacs_hook;

Stefan Monnier's avatar
Stefan Monnier committed
111 112 113
/* An empty lisp string.  To avoid having to build any other.  */
Lisp_Object empty_string;

114
#ifdef SIGUSR1
Pavel Janík's avatar
Pavel Janík committed
115
/* Hooks for signal USR1 and USR2 handling.  */
116 117 118
Lisp_Object Vsignal_USR1_hook;
#ifdef SIGUSR2
Lisp_Object Vsignal_USR2_hook;
Pavel Janík's avatar
Pavel Janík committed
119
#endif
120 121
#endif

122 123 124
/* Search path separator.  */
Lisp_Object Vpath_separator;

Jim Blandy's avatar
Jim Blandy committed
125 126 127 128 129
/* Set nonzero after Emacs has started up the first time.
  Prevents reinitialization of the Lisp world and keymaps
  on subsequent starts.  */
int initialized;

130 131 132 133 134 135 136 137
#ifdef DOUG_LEA_MALLOC
/* Preserves a pointer to the memory allocated that copies that
   static data inside glibc's malloc.  */
void *malloc_state_ptr;
/* From glibc, a routine that returns a copy of the malloc internal state.  */
extern void *malloc_get_state ();
/* From glibc, a routine that overwrites the malloc internal state.  */
extern void malloc_set_state ();
138 139 140
/* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
   dumping.  Used to work around a bug in glibc's malloc.  */
int malloc_using_checking;
141 142
#endif

143
/* Variable whose value is symbol giving operating system type.  */
Jim Blandy's avatar
Jim Blandy committed
144
Lisp_Object Vsystem_type;
145 146 147

/* Variable whose value is string giving configuration built for.  */
Lisp_Object Vsystem_configuration;
148 149 150 151 152

/* Variable whose value is string giving configuration options,
   for use when reporting bugs.  */
Lisp_Object Vsystem_configuration_options;

153 154
Lisp_Object Qfile_name_handler_alist;

155
/* Current and previous system locales for messages and time.  */
156 157 158 159
Lisp_Object Vsystem_messages_locale;
Lisp_Object Vprevious_system_messages_locale;
Lisp_Object Vsystem_time_locale;
Lisp_Object Vprevious_system_time_locale;
160

Jim Blandy's avatar
Jim Blandy committed
161
/* If non-zero, emacs should not attempt to use an window-specific code,
Pavel Janík's avatar
Pavel Janík committed
162
   but instead should use the virtual terminal under which it was started.  */
Jim Blandy's avatar
Jim Blandy committed
163 164
int inhibit_window_system;

165 166
/* If nonzero, set Emacs to run at this priority.  This is also used
   in child_setup and sys_suspend to make sure subshells run at normal
Pavel Janík's avatar
Pavel Janík committed
167
   priority; those functions have their own extern declaration.  */
168
EMACS_INT emacs_priority;
169

Pavel Janík's avatar
Pavel Janík committed
170 171
/* If non-zero, a filter or a sentinel is running.  Tested to save the match
   data on the first attempt to change it inside asynchronous code.  */
172 173
int running_asynch_code;

174
#ifdef BSD_PGRPS
175 176 177 178
/* See sysdep.c.  */
extern int inherited_pgroup;
#endif

Jim Blandy's avatar
Jim Blandy committed
179
#ifdef HAVE_X_WINDOWS
Pavel Janík's avatar
Pavel Janík committed
180
/* If non-zero, -d was specified, meaning we're using some window system.  */
Jim Blandy's avatar
Jim Blandy committed
181 182 183 184 185 186 187
int display_arg;
#endif

/* An address near the bottom of the stack.
   Tells GC how to save a copy of the stack.  */
char *stack_bottom;

188
#ifdef HAVE_WINDOW_SYSTEM
Jim Blandy's avatar
Jim Blandy committed
189
extern Lisp_Object Vwindow_system;
190
#endif /* HAVE_WINDOW_SYSTEM */
Jim Blandy's avatar
Jim Blandy committed
191

192 193
extern Lisp_Object Vauto_save_list_file_name;

Jim Blandy's avatar
Jim Blandy committed
194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209
#ifdef USG_SHARED_LIBRARIES
/* If nonzero, this is the place to put the end of the writable segment
   at startup.  */

unsigned int bss_end = 0;
#endif

/* Nonzero means running Emacs without interactive terminal.  */

int noninteractive;

/* Value of Lisp variable `noninteractive'.
   Normally same as C variable `noninteractive'
   but nothing terrible happens if user sets this one.  */

int noninteractive1;
210 211 212 213

/* Save argv and argc.  */
char **initial_argv;
int initial_argc;
214 215

static void sort_args ();
Andreas Schwab's avatar
Andreas Schwab committed
216
void syms_of_emacs ();
Gerd Moellmann's avatar
Gerd Moellmann committed
217

218
#define USAGE1 "\
Gerd Moellmann's avatar
Gerd Moellmann committed
219 220 221 222 223 224 225 226 227 228 229 230
Usage: %s [OPTION-OR-FILENAME]...\n\
\n\
Run Emacs, the extensible, customizable, self-documenting real-time\n\
display editor.  The recommended way to start Emacs for normal editing\n\
is with no options at all.\n\
\n\
Run M-x info RET m emacs RET m command arguments RET inside Emacs to\n\
read the main documentation for these command-line arguments.\n\
\n\
Initialization options:\n\
\n\
--batch			do not do interactive display; implies -q\n\
231
--script FILE           run FILE as an Emacs Lisp script.\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
232 233 234 235 236 237
--debug-init		enable Emacs Lisp debugger during init file\n\
--help			display this help message and exit\n\
--multibyte, --no-unibyte   run Emacs in multibyte mode\n\
--no-init-file, -q	    load neither ~/.emacs nor default.el\n\
--no-shared-memory, -nl	    do not use shared memory\n\
--no-site-file		    do not load site-start.el\n\
Colin Walters's avatar
Colin Walters committed
238
--no-splash		    do not display a splash screen on startup\n\
239
--no-window-system, -nw	    don't communicate with X, ignoring $DISPLAY\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
240 241 242 243 244 245 246 247
--terminal, -t DEVICE	    use DEVICE for terminal I/O\n\
--unibyte, --no-multibyte   run Emacs in unibyte mode\n\
--user, -u USER		load ~USER/.emacs instead of your own\n\
--version		display version information and exit\n\
\n\
Action options:\n\
\n\
FILE			visit FILE using find-file\n\
248 249 250
+LINE FILE		visit FILE using find-file, then go to line LINE\n\
+LINE:COLUMN FILE	visit FILE using find-file, then go to line LINE,\n\
			    column COLUMN\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
251 252 253 254 255 256 257 258 259
--directory, -L DIR	add DIR to variable load-path\n\
--eval EXPR		evaluate Emacs Lisp expression EXPR\n\
--execute EXPR		evaluate Emacs Lisp expression EXPR\n\
--find-file FILE	visit FILE\n\
--funcall, -f FUNC	call Emacs function FUNC with no arguments\n\
--insert FILE		insert contents of FILE into current buffer\n\
--kill			exit without asking for confirmation\n\
--load, -l FILE		load FILE of Emacs Lisp code using the load function\n\
--visit FILE		visit FILE\n\
260 261 262
\n"

#define USAGE2 "\
263
Display options:\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
264 265 266 267
\n\
--background-color, -bg COLOR	window background color\n\
--border-color, -bd COLOR	main border color\n\
--border-width, -bw WIDTH	width of main border\n\
268 269 270 271
--color=MODE			color mode for character terminals;\n\
				MODE defaults to `auto', and can also\n\
				be `never', `auto', `always',\n\
				or a mode name like `ansi8'\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
272 273
--cursor-color, -cr COLOR	color of the Emacs cursor indicating point\n\
--display, -d DISPLAY		use X server DISPLAY\n\
Pavel Janík's avatar
Pavel Janík committed
274
--font, -fn FONT		default font; must be fixed-width\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
275
--foreground-color, -fg COLOR	window foreground color\n\
276 277 278
--fullscreen, -fs	        make first frame fullscreen\n\
--fullwidth, -fw	        make the first frame wide as the screen\n\
--fullheight, -fh	        make the first frame high as the screen\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
279 280 281 282
--geometry, -g GEOMETRY		window geometry\n\
--iconic			start Emacs in iconified state\n\
--icon-type, -i			use picture of gnu for Emacs icon\n\
--internal-border, -ib WIDTH	width between text and main border\n\
283
--line-spacing, -lsp PIXELS	additional space to put between lines\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
284 285 286
--mouse-color, -ms COLOR 	mouse cursor color in Emacs window\n\
--name NAME			title of main Emacs window\n\
--reverse-video, -r, -rv	switch foreground and background\n\
Pavel Janík's avatar
Pavel Janík committed
287
--title, -T, -wn TITLE		title for Emacs windows\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
288 289 290 291 292 293 294 295 296
--vertical-scroll-bars, -vb	enable vertical scroll bars\n\
--xrm XRESOURCES		set additional X resources\n\
\n\
You can generally also specify long option names with a single -; for\n\
example, -batch as well as --batch.  You can use any unambiguous\n\
abbreviation for a --option.\n\
\n\
Various environment variables and window system resources also affect\n\
Emacs' operation.  See the main documentation.\n\
297 298 299 300
\n"

#define USAGE3 "\
Report bugs to %s.  First, please see the Bugs\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
301 302
section of the Emacs manual or the file BUGS.\n"

Jim Blandy's avatar
Jim Blandy committed
303

Pavel Janík's avatar
Pavel Janík committed
304
/* Signal code for the fatal signal that was received.  */
Jim Blandy's avatar
Jim Blandy committed
305 306
int fatal_error_code;

Pavel Janík's avatar
Pavel Janík committed
307
/* Nonzero if handling a fatal error already.  */
Jim Blandy's avatar
Jim Blandy committed
308 309
int fatal_error_in_progress;

Pavel Janík's avatar
Pavel Janík committed
310
/* If non-null, call this function from fatal_error_signal before
311 312 313 314 315
   committing suicide.  */

void (*fatal_error_signal_hook) P_ ((void));


316 317 318 319 320
#ifdef SIGUSR1
SIGTYPE
handle_USR1_signal (sig)
     int sig;
{
321 322
  struct input_event buf;

323
  bzero (&buf, sizeof buf);
324
  buf.kind = USER_SIGNAL_EVENT;
325
  buf.frame_or_window = selected_frame;
326 327

  kbd_buffer_store_event (&buf);
328
}
329
#endif /* SIGUSR1 */
Richard M. Stallman's avatar
Richard M. Stallman committed
330

331 332 333 334 335
#ifdef SIGUSR2
SIGTYPE
handle_USR2_signal (sig)
     int sig;
{
336 337
  struct input_event buf;

338
  bzero (&buf, sizeof buf);
339
  buf.kind = USER_SIGNAL_EVENT;
340
  buf.code = 1;
341
  buf.frame_or_window = selected_frame;
342 343

  kbd_buffer_store_event (&buf);
344
}
345
#endif /* SIGUSR2 */
346

Pavel Janík's avatar
Pavel Janík committed
347
/* Handle bus errors, invalid instruction, etc.  */
Jim Blandy's avatar
Jim Blandy committed
348
SIGTYPE
Jim Blandy's avatar
Jim Blandy committed
349 350 351 352 353 354
fatal_error_signal (sig)
     int sig;
{
  fatal_error_code = sig;
  signal (sig, SIG_DFL);

355 356
  TOTALLY_UNBLOCK_INPUT;

Jim Blandy's avatar
Jim Blandy committed
357
  /* If fatal error occurs in code below, avoid infinite recursion.  */
358 359 360
  if (! fatal_error_in_progress)
    {
      fatal_error_in_progress = 1;
Jim Blandy's avatar
Jim Blandy committed
361

362
      shut_down_emacs (sig, 0, Qnil);
363
    }
Jim Blandy's avatar
Jim Blandy committed
364 365 366 367

#ifdef VMS
  LIB$STOP (SS$_ABORT);
#else
368 369 370 371
  /* Signal the same code; this time it will really be fatal.
     Remember that since we're in a signal handler, the signal we're
     going to send is probably blocked, so we have to unblock it if we
     want to really receive it.  */
372
#ifndef MSDOS
373
  sigunblock (sigmask (fatal_error_code));
374
#endif
375 376 377

  if (fatal_error_signal_hook)
    fatal_error_signal_hook ();
Pavel Janík's avatar
Pavel Janík committed
378

Jim Blandy's avatar
Jim Blandy committed
379 380 381
  kill (getpid (), fatal_error_code);
#endif /* not VMS */
}
382 383 384

#ifdef SIGDANGER

Richard M. Stallman's avatar
Richard M. Stallman committed
385
/* Handler for SIGDANGER.  */
386 387 388 389 390 391 392
SIGTYPE
memory_warning_signal (sig)
     int sig;
{
  signal (sig, memory_warning_signal);

  malloc_warning ("Operating system warns that virtual memory is running low.\n");
393 394 395

  /* It might be unsafe to call do_auto_save now.  */
  force_auto_save_soon ();
396 397
}
#endif
Richard M. Stallman's avatar
Richard M. Stallman committed
398 399

/* We define abort, rather than using it from the library,
Karl Heuer's avatar
Karl Heuer committed
400
   so that GDB can return from a breakpoint here.
Pavel Janík's avatar
Pavel Janík committed
401
   MSDOS has its own definition in msdos.c.  */
Richard M. Stallman's avatar
Richard M. Stallman committed
402

403
#if ! defined (DOS_NT) && ! defined (NO_ABORT)
404 405 406 407 408 409

#ifndef ABORT_RETURN_TYPE
#define ABORT_RETURN_TYPE void
#endif

ABORT_RETURN_TYPE
Richard M. Stallman's avatar
Richard M. Stallman committed
410 411 412
abort ()
{
  kill (getpid (), SIGABRT);
413 414
  /* This shouldn't be executed, but it prevents a warning.  */
  exit (1);
Richard M. Stallman's avatar
Richard M. Stallman committed
415
}
Karl Heuer's avatar
Karl Heuer committed
416
#endif
Richard M. Stallman's avatar
Richard M. Stallman committed
417

Jim Blandy's avatar
Jim Blandy committed
418

Pavel Janík's avatar
Pavel Janík committed
419
/* Code for dealing with Lisp access to the Unix command line.  */
Jim Blandy's avatar
Jim Blandy committed
420

Andreas Schwab's avatar
Andreas Schwab committed
421
static void
Jim Blandy's avatar
Jim Blandy committed
422 423 424 425 426 427
init_cmdargs (argc, argv, skip_args)
     int argc;
     char **argv;
     int skip_args;
{
  register int i;
428
  Lisp_Object name, dir, tem;
Juanma Barranquero's avatar
Juanma Barranquero committed
429
  int count = SPECPDL_INDEX ();
430
  Lisp_Object raw_name;
Jim Blandy's avatar
Jim Blandy committed
431

432 433 434
  initial_argv = argv;
  initial_argc = argc;

435 436 437 438 439 440 441 442 443 444 445
  raw_name = build_string (argv[0]);

  /* Add /: to the front of the name
     if it would otherwise be treated as magic.  */
  tem = Ffind_file_name_handler (raw_name, Qt);
  if (! NILP (tem))
    raw_name = concat2 (build_string ("/:"), raw_name);

  Vinvocation_name = Ffile_name_nondirectory (raw_name);
  Vinvocation_directory = Ffile_name_directory (raw_name);

446 447 448 449 450 451
  /* If we got no directory in argv[0], search PATH to find where
     Emacs actually came from.  */
  if (NILP (Vinvocation_directory))
    {
      Lisp_Object found;
      int yes = openp (Vexec_path, Vinvocation_name,
452
		       Vexec_suffixes, &found, make_number (X_OK));
453
      if (yes == 1)
454 455 456 457 458 459 460 461
	{
	  /* Add /: to the front of the name
	     if it would otherwise be treated as magic.  */
	  tem = Ffind_file_name_handler (found, Qt);
	  if (! NILP (tem))
	    found = concat2 (build_string ("/:"), found);
	  Vinvocation_directory = Ffile_name_directory (found);
	}
462
    }
463

464 465
  if (!NILP (Vinvocation_directory)
      && NILP (Ffile_name_absolute_p (Vinvocation_directory)))
466 467
    /* Emacs was started with relative path, like ./emacs.
       Make it absolute.  */
468 469
    Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil);

470 471 472 473 474 475 476 477
  Vinstallation_directory = Qnil;

  if (!NILP (Vinvocation_directory))
    {
      dir = Vinvocation_directory;
      name = Fexpand_file_name (Vinvocation_name, dir);
      while (1)
	{
478
	  Lisp_Object tem, lib_src_exists;
479 480
	  Lisp_Object etc_exists, info_exists;

481 482 483 484 485
	  /* See if dir contains subdirs for use by Emacs.
	     Check for the ones that would exist in a build directory,
	     not including lisp and info.  */
	  tem = Fexpand_file_name (build_string ("lib-src"), dir);
	  lib_src_exists = Ffile_exists_p (tem);
486

487
#ifdef MSDOS
488 489 490 491 492
	  /* MSDOS installations frequently remove lib-src, but we still
	     must set installation-directory, or else info won't find
	     its files (it uses the value of installation-directory).  */
	  tem = Fexpand_file_name (build_string ("info"), dir);
	  info_exists = Ffile_exists_p (tem);
493 494 495
#else
	  info_exists = Qnil;
#endif
496 497

	  if (!NILP (lib_src_exists) || !NILP (info_exists))
498
	    {
499 500 501
	      tem = Fexpand_file_name (build_string ("etc"), dir);
	      etc_exists = Ffile_exists_p (tem);
	      if (!NILP (etc_exists))
502
		{
503 504 505
		  Vinstallation_directory
		    = Ffile_name_as_directory (dir);
		  break;
506 507 508 509
		}
	    }

	  /* See if dir's parent contains those subdirs.  */
510 511
	  tem = Fexpand_file_name (build_string ("../lib-src"), dir);
	  lib_src_exists = Ffile_exists_p (tem);
512

513 514 515

#ifdef MSDOS
	  /* See the MSDOS commentary above.  */
516 517
	  tem = Fexpand_file_name (build_string ("../info"), dir);
	  info_exists = Ffile_exists_p (tem);
518 519 520
#else
	  info_exists = Qnil;
#endif
521 522

	  if (!NILP (lib_src_exists) || !NILP (info_exists))
523
	    {
524 525 526
	      tem = Fexpand_file_name (build_string ("../etc"), dir);
	      etc_exists = Ffile_exists_p (tem);
	      if (!NILP (etc_exists))
527
		{
528 529 530 531
		  tem = Fexpand_file_name (build_string (".."), dir);
		  Vinstallation_directory
		    = Ffile_name_as_directory (tem);
		  break;
532 533 534 535 536 537 538 539
		}
	    }

	  /* If the Emacs executable is actually a link,
	     next try the dir that the link points into.  */
	  tem = Ffile_symlink_p (name);
	  if (!NILP (tem))
	    {
540
	      name = Fexpand_file_name (tem, dir);
541 542 543 544 545 546 547
	      dir = Ffile_name_directory (name);
	    }
	  else
	    break;
	}
    }

Jim Blandy's avatar
Jim Blandy committed
548 549 550 551 552 553 554 555
  Vcommand_line_args = Qnil;

  for (i = argc - 1; i >= 0; i--)
    {
      if (i == 0 || i > skip_args)
	Vcommand_line_args
	  = Fcons (build_string (argv[i]), Vcommand_line_args);
    }
556 557

  unbind_to (count, Qnil);
Jim Blandy's avatar
Jim Blandy committed
558
}
559 560

DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0,
Pavel Janík's avatar
Pavel Janík committed
561 562 563
       doc: /* Return the program name that was used to run Emacs.
Any directory names are omitted.  */)
     ()
564 565 566 567
{
  return Fcopy_sequence (Vinvocation_name);
}

568
DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory,
Pavel Janík's avatar
Pavel Janík committed
569 570 571
       0, 0, 0,
       doc: /* Return the directory name in which the Emacs executable was located.  */)
     ()
572 573 574 575
{
  return Fcopy_sequence (Vinvocation_directory);
}

Jim Blandy's avatar
Jim Blandy committed
576 577 578

#ifdef VMS
#ifdef LINK_CRTL_SHARE
579
#ifdef SHARABLE_LIB_BUG
Jim Blandy's avatar
Jim Blandy committed
580
extern noshare char **environ;
581
#endif /* SHARABLE_LIB_BUG */
Jim Blandy's avatar
Jim Blandy committed
582 583 584
#endif /* LINK_CRTL_SHARE */
#endif /* VMS */

585 586 587 588 589 590
#ifdef HAVE_TZSET
/* A valid but unlikely value for the TZ environment value.
   It is OK (though a bit slower) if the user actually chooses this value.  */
static char dump_tz[] = "UtC0";
#endif

591
#ifndef ORDINARY_LINK
592 593 594 595 596
/* We don't include crtbegin.o and crtend.o in the link,
   so these functions and variables might be missed.
   Provide dummy definitions to avoid error.
   (We don't have any real constructors or destructors.)  */
#ifdef __GNUC__
597
#ifndef GCC_CTORS_IN_LIBC
Andreas Schwab's avatar
Andreas Schwab committed
598
void __do_global_ctors ()
599
{}
Andreas Schwab's avatar
Andreas Schwab committed
600
void __do_global_ctors_aux ()
601
{}
Andreas Schwab's avatar
Andreas Schwab committed
602
void __do_global_dtors ()
603
{}
604
/* Linux has a bug in its library; avoid an error.  */
605
#ifndef GNU_LINUX
606
char * __CTOR_LIST__[2] = { (char *) (-1), 0 };
607
#endif
608
char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
609
#endif /* GCC_CTORS_IN_LIBC */
Andreas Schwab's avatar
Andreas Schwab committed
610
void __main ()
611 612
{}
#endif /* __GNUC__ */
613
#endif /* ORDINARY_LINK */
614

Karl Heuer's avatar
Karl Heuer committed
615 616 617 618 619 620 621 622 623
/* Test whether the next argument in ARGV matches SSTR or a prefix of
   LSTR (at least MINLEN characters).  If so, then if VALPTR is non-null
   (the argument is supposed to have a value) store in *VALPTR either
   the next argument or the portion of this one after the equal sign.
   ARGV is read starting at position *SKIPPTR; this index is advanced
   by the number of arguments used.

   Too bad we can't just use getopt for all of this, but we don't have
   enough information to do it right.  */
624

Karl Heuer's avatar
Karl Heuer committed
625
static int
626
argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr)
Karl Heuer's avatar
Karl Heuer committed
627
     char **argv;
628
     int argc;
Karl Heuer's avatar
Karl Heuer committed
629 630 631 632 633 634
     char *sstr;
     char *lstr;
     int minlen;
     char **valptr;
     int *skipptr;
{
635
  char *p = NULL;
Karl Heuer's avatar
Karl Heuer committed
636
  int arglen;
637 638 639 640 641 642 643
  char *arg;

  /* Don't access argv[argc]; give up in advance.  */
  if (argc <= *skipptr + 1)
    return 0;

  arg = argv[*skipptr+1];
Karl Heuer's avatar
Karl Heuer committed
644 645 646 647 648 649 650 651 652 653 654 655 656 657 658
  if (arg == NULL)
    return 0;
  if (strcmp (arg, sstr) == 0)
    {
      if (valptr != NULL)
	{
	  *valptr = argv[*skipptr+2];
	  *skipptr += 2;
	}
      else
	*skipptr += 1;
      return 1;
    }
  arglen = (valptr != NULL && (p = index (arg, '=')) != NULL
	    ? p - arg : strlen (arg));
659
  if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0)
Karl Heuer's avatar
Karl Heuer committed
660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683
    return 0;
  else if (valptr == NULL)
    {
      *skipptr += 1;
      return 1;
    }
  else if (p != NULL)
    {
      *valptr = p+1;
      *skipptr += 1;
      return 1;
    }
  else if (argv[*skipptr+2] != NULL)
    {
      *valptr = argv[*skipptr+2];
      *skipptr += 2;
      return 1;
    }
  else
    {
      return 0;
    }
}

684
#ifdef DOUG_LEA_MALLOC
Jim Blandy's avatar
Jim Blandy committed
685

686 687 688 689 690 691 692
/* malloc can be invoked even before main (e.g. by the dynamic
   linker), so the dumped malloc state must be restored as early as
   possible using this special hook.  */

static void
malloc_initialize_hook ()
{
693
#ifndef USE_CRT_DLL
694
  extern char **environ;
695
#endif
696

697 698
  if (initialized)
    {
699 700 701
      if (!malloc_using_checking)
	/* Work around a bug in glibc's malloc.  MALLOC_CHECK_ must be
	   ignored if the heap to be restored was constructed without
702 703 704 705
	   malloc checking.  Can't use unsetenv, since that calls malloc.  */
	{
	  char **p;

706
	  for (p = environ; p && *p; p++)
707 708 709 710 711 712 713 714
	    if (strncmp (*p, "MALLOC_CHECK_=", 14) == 0)
	      {
		do
		  *p = p[1];
		while (*++p);
		break;
	      }
	}
715

716 717 718
      malloc_set_state (malloc_state_ptr);
      free (malloc_state_ptr);
    }
719 720
  else
    malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL;
721 722 723 724 725 726
}

void (*__malloc_initialize_hook) () = malloc_initialize_hook;

#endif /* DOUG_LEA_MALLOC */

727 728 729 730 731 732 733

#define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
#define REPORT_EMACS_BUG_PRETEST_ADDRESS "emacs-pretest-bug@gnu.org"

/* This function is used to determine an address to which bug report should
   be sent.  */

734 735
char *
bug_reporting_address ()
736
{
737
  int count = 0;
738 739 740 741 742 743 744 745 746
  Lisp_Object temp;
  char *string;

  temp = Fsymbol_value (intern ("emacs-version"));

  /* When `emacs-version' is invalid, use normal address.  */
  if (!STRINGP(temp))
    return REPORT_EMACS_BUG_ADDRESS;

747
  string = SDATA (temp);
748

749 750 751 752 753 754 755
  /* Count dots in `emacs-version'.  */
  while (*string)
    {
      if (*string == '.')
	count++;
      string++;
    }
756 757 758

  /* When `emacs-version' has at least three dots, it is development or
     pretest version of Emacs.  */
759
  return count >= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS : REPORT_EMACS_BUG_ADDRESS;
760 761 762
}


763 764 765 766 767 768 769
/* ARGSUSED */
int
main (argc, argv, envp)
     int argc;
     char **argv;
     char **envp;
{
770
#if GC_MARK_STACK
771 772
  Lisp_Object dummy;
#endif
773
  char stack_bottom_variable;
774
  int do_initial_setlocale;
775
  int skip_args = 0;
776
#ifndef USE_CRT_DLL
777
  extern int errno;
778
#endif
779 780 781 782
#ifdef HAVE_SETRLIMIT
  struct rlimit rlim;
#endif
  int no_loadup = 0;
Richard M. Stallman's avatar
Richard M. Stallman committed
783
  char *junk = 0;
784

785
#if GC_MARK_STACK
786 787 788 789
  extern Lisp_Object *stack_base;
  stack_base = &dummy;
#endif

790 791
#ifdef LINUX_SBRK_BUG
  __sbrk (1);
792 793
#endif

794 795 796 797 798
#ifdef RUN_TIME_REMAP
  if (initialized)
    run_time_remap (argv[0]);
#endif

799
#ifdef MAC_OSX
800 801 802 803
  if (!initialized)
    unexec_init_emacs_zone ();
#endif

804
  sort_args (argc, argv);
805 806
  argc = 0;
  while (argv[argc]) argc++;
807

808 809 810 811
  if (argmatch (argv, argc, "-version", "--version", 3, NULL, &skip_args)
      /* We don't know the version number unless this is a dumped Emacs.
         So ignore --version otherwise.  */
      && initialized)
812 813 814 815 816 817 818 819 820 821
    {
      Lisp_Object tem;
      tem = Fsymbol_value (intern ("emacs-version"));
      if (!STRINGP (tem))
	{
	  fprintf (stderr, "Invalid value of `emacs-version'\n");
	  exit (1);
	}
      else
	{
822
	  printf ("GNU Emacs %s\n", SDATA (tem));
823
	  printf ("Copyright (C) 2002 Free Software Foundation, Inc.\n");
824 825 826 827
	  printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
	  printf ("You may redistribute copies of Emacs\n");
	  printf ("under the terms of the GNU General Public License.\n");
	  printf ("For more information about these matters, ");
Karl Heuer's avatar
Karl Heuer committed
828
	  printf ("see the file named COPYING.\n");
829 830 831 832
	  exit (0);
	}
    }

Jim Blandy's avatar
Jim Blandy committed
833 834
/* Map in shared memory, if we are using that.  */
#ifdef HAVE_SHM
835
  if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args))
Jim Blandy's avatar
Jim Blandy committed
836 837 838 839 840 841 842 843 844 845 846 847 848
    {
      map_in_data (0);
      /* The shared memory was just restored, which clobbered this.  */
      skip_args = 1;
    }
  else
    {
      map_in_data (1);
      /* The shared memory was just restored, which clobbered this.  */
      skip_args = 0;
    }
#endif

849
#ifdef NeXT
850 851 852 853 854 855 856
  {
    extern int malloc_cookie;
    /* This helps out unexnext.c.  */
    if (initialized)
      if (malloc_jumpstart (malloc_cookie) != 0)
	printf ("malloc jumpstart failed!\n");
  }
857 858
#endif /* NeXT */

859 860 861 862 863 864 865
#ifdef MAC_OSX
  /* Skip process serial number passed in the form -psn_x_y as
     command-line argument.  */
  if (argc > skip_args + 1 && strncmp (argv[skip_args+1], "-psn_", 5) == 0)
    skip_args++;
#endif /* MAC_OSX */

Jim Blandy's avatar
Jim Blandy committed
866
#ifdef VMS
Pavel Janík's avatar
Pavel Janík committed
867
  /* If -map specified, map the data file in.  */
Karl Heuer's avatar
Karl Heuer committed
868 869
  {
    char *file;
870
    if (argmatch (argv, argc, "-map", "--map-data", 3, &mapin_file, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
871 872
      mapin_data (file);
  }
Jim Blandy's avatar
Jim Blandy committed
873 874

#ifdef LINK_CRTL_SHARE
875
#ifdef SHARABLE_LIB_BUG
Pavel Janík's avatar
Pavel Janík committed
876
  /* Bletcherous shared libraries!  */
Jim Blandy's avatar
Jim Blandy committed
877 878 879 880 881 882 883 884
  if (!stdin)
    stdin = fdopen (0, "r");
  if (!stdout)
    stdout = fdopen (1, "w");
  if (!stderr)
    stderr = fdopen (2, "w");
  if (!environ)
    environ = envp;
885
#endif /* SHARABLE_LIB_BUG */
Jim Blandy's avatar
Jim Blandy committed
886 887 888
#endif /* LINK_CRTL_SHARE */
#endif /* VMS */

889
#if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
890 891 892 893 894 895 896 897
  /* Extend the stack space available.
     Don't do that if dumping, since some systems (e.g. DJGPP)
     might define a smaller stack limit at that time.  */
  if (1
#ifndef CANNOT_DUMP
      && (!noninteractive || initialized)
#endif
      && !getrlimit (RLIMIT_STACK, &rlim))
898
    {
899
      long newlim;
900
      extern int re_max_failures;
901 902 903 904 905 906 907 908
      /* Approximate the amount regex.c needs per unit of re_max_failures.  */
      int ratio = 20 * sizeof (char *);
      /* Then add 33% to cover the size of the smaller stacks that regex.c
	 successively allocates and discards, on its way to the maximum.  */
      ratio += ratio / 3;
      /* Add in some extra to cover
	 what we're likely to use for other reasons.  */
      newlim = re_max_failures * ratio + 200000;
909 910 911 912 913 914 915
#ifdef __NetBSD__
      /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
       stack allocation routine for new process that the allocation
       fails if stack limit is not on page boundary.  So, round up the
       new limit to page boundary.  */
      newlim = (newlim + getpagesize () - 1) / getpagesize () * getpagesize();
#endif
916
      if (newlim > rlim.rlim_max)
917 918
	{
	  newlim = rlim.rlim_max;
919 920
	  /* Don't let regex.c overflow the stack we have.  */
	  re_max_failures = (newlim - 200000) / ratio;
921
	}
922 923 924
      if (rlim.rlim_cur < newlim)
	rlim.rlim_cur = newlim;

925 926
      setrlimit (RLIMIT_STACK, &rlim);
    }
927
#endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
928

Jim Blandy's avatar
Jim Blandy committed
929 930 931 932 933
  /* Record (approximately) where the stack begins.  */
  stack_bottom = &stack_bottom_variable;

#ifdef USG_SHARED_LIBRARIES
  if (bss_end)
934
    brk ((void *)bss_end);
Jim Blandy's avatar
Jim Blandy committed
935 936 937
#endif

  clearerr (stdin);
938

Jim Blandy's avatar
Jim Blandy committed
939
#ifndef SYSTEM_MALLOC
940 941
  /* Arrange to get warning messages as memory fills up.  */
  memory_warnings (0, malloc_warning);
942

943 944 945
  /* Call malloc at least once, to run the initial __malloc_hook.
     Also call realloc and free for consistency.  */
  free (realloc (malloc (4), 4));
946 947 948

  /* Arrange to disable interrupt input inside malloc etc.  */
  uninterrupt_malloc ();
Jim Blandy's avatar
Jim Blandy committed
949 950
#endif	/* not SYSTEM_MALLOC */

951 952 953 954
#ifdef MSDOS
  /* We do all file input/output as binary files.  When we need to translate
     newlines, we do that manually.  */
  _fmode = O_BINARY;
955 956 957 958 959 960 961 962 963 964

#if __DJGPP__ >= 2
  if (!isatty (fileno (stdin)))
    setmode (fileno (stdin), O_BINARY);
  if (!isatty (fileno (stdout)))
    {
      fflush (stdout);
      setmode (fileno (stdout), O_BINARY);
    }
#else  /* not __DJGPP__ >= 2 */
965 966 967
  (stdin)->_flag &= ~_IOTEXT;
  (stdout)->_flag &= ~_IOTEXT;
  (stderr)->_flag &= ~_IOTEXT;
968
#endif /* not __DJGPP__ >= 2 */
969 970
#endif /* MSDOS */

971
#ifdef SET_EMACS_PRIORITY
972
  if (emacs_priority)
973
    nice (emacs_priority);
Jim Blandy's avatar
Jim Blandy committed
974
  setuid (getuid ());
975
#endif /* SET_EMACS_PRIORITY */
Jim Blandy's avatar
Jim Blandy committed
976

977 978 979 980 981 982 983 984 985 986 987 988 989 990
  /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
     The build procedure uses this while dumping, to ensure that the
     dumped Emacs does not have its system locale tables initialized,
     as that might cause screwups when the dumped Emacs starts up.  */
  {
    char *lc_all = getenv ("LC_ALL");
    do_initial_setlocale = ! lc_all || strcmp (lc_all, "C");
  }

  /* Set locale now, so that initial error messages are localized properly.
     fixup_locale must wait until later, since it builds strings.  */
  if (do_initial_setlocale)
    setlocale (LC_ALL, "");

991
#ifdef EXTRA_INITIALIZE
992
  EXTRA_INITIALIZE;
993 994
#endif

Jim Blandy's avatar
Jim Blandy committed
995 996
  inhibit_window_system = 0;

Pavel Janík's avatar
Pavel Janík committed
997
  /* Handle the -t switch, which specifies filename to use as terminal.  */
998 999 1000 1001 1002 1003
  while (1)
    {
      char *term;
      if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
	{
	  int result;
1004 1005 1006
	  emacs_close (0);
	  emacs_close (1);
	  result = emacs_open (term, O_RDWR, 0);
1007 1008 1009
	  if (result < 0)
	    {
	      char *errstring = strerror (errno);
1010
	      fprintf (stderr, "%s: %s: %s\n", argv[0], term, errstring);
1011 1012 1013 1014 1015
	      exit (1);
	    }
	  dup (0);
	  if (! isatty (0))
	    {
1016
	      fprintf (stderr, "%s: %s: not a tty\n", argv[0], term);
1017 1018 1019
	      exit (1);
	    }
	  fprintf (stderr, "Using %s\n", term);
1020
#ifdef HAVE_WINDOW_SYSTEM
1021
	  inhibit_window_system = 1; /* -t => -nw */
Jim Blandy's avatar
Jim Blandy committed
1022
#endif
1023 1024 1025 1026 1027
	}
      else
	break;
    }

1028 1029 1030 1031
  /* Command line option --no-windows is deprecated and thus not mentioned
     in the manual and usage informations.  */
  if (argmatch (argv, argc, "-nw", "--no-window-system", 6, NULL, &skip_args)
      || argmatch (argv, argc, "-nw", "--no-windows", 6, NULL, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
1032
    inhibit_window_system = 1;
Jim Blandy's avatar
Jim Blandy committed
1033

Karl Heuer's avatar
Karl Heuer committed
1034
  /* Handle the -batch switch, which means don't do interactive display.  */
Jim Blandy's avatar
Jim Blandy committed
1035
  noninteractive = 0;
1036
  if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
1037
    noninteractive = 1;
Richard M. Stallman's avatar
Richard M. Stallman committed
1038 1039 1040 1041 1042 1043 1044 1045 1046
  if (argmatch (argv, argc, "-script", "--script", 3, &junk, &skip_args))
    {
      noninteractive = 1;	/* Set batch mode.  */
      /* Convert --script to -l, un-skip it, and sort again so that -l will be
	 handled in proper sequence.  */
      argv[skip_args - 1] = "-l";
      skip_args -= 2;
      sort_args (argc, argv);
    }
Karl Heuer's avatar
Karl Heuer committed
1047

Pavel Janík's avatar
Pavel Janík committed
1048
  /* Handle the --help option, which gives a usage message.  */
1049
  if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args))
Jim Blandy's avatar
Jim Blandy committed
1050
    {
1051 1052
      printf (USAGE1, argv[0]);
      printf (USAGE2);
1053
      printf (USAGE3, bug_reporting_address ());
Karl Heuer's avatar
Karl Heuer committed
1054
      exit (0);
Jim Blandy's avatar
Jim Blandy committed
1055 1056
    }

1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071
  if (! noninteractive)
    {
#ifdef BSD_PGRPS
      if (initialized)
	{
	  inherited_pgroup = EMACS_GETPGRP (0);
	  setpgrp (0, getpid ());
	}
#else
#if defined (USG5) && defined (INTERRUPT_INPUT)
      setpgrp ();
#endif
#endif
    }

Jim Blandy's avatar
Jim Blandy committed
1072 1073
  init_signals ();

1074 1075 1076 1077 1078 1079 1080
  /* Don't catch SIGHUP if dumping.  */
  if (1
#ifndef CANNOT_DUMP
      && initialized
#endif
      )
    {
1081
      sigblock (sigmask (SIGHUP));
1082 1083 1084 1085 1086
      /* In --batch mode, don't catch SIGHUP if already ignored.
	 That makes nohup work.  */
      if (! noninteractive
	  || signal (SIGHUP, SIG_IGN) != SIG_IGN)
	signal (SIGHUP, fatal_error_signal);
1087
      sigunblock (sigmask (SIGHUP));
1088 1089
    }

Jim Blandy's avatar
Jim Blandy committed
1090 1091 1092 1093 1094 1095 1096 1097
  if (
#ifndef CANNOT_DUMP
      ! noninteractive || initialized
#else
      1
#endif
      )
    {
1098
      /* Don't catch these signals in batch mode if dumping.
Jim Blandy's avatar
Jim Blandy committed
1099 1100 1101 1102 1103
	 On some machines, this sets static data that would make
	 signal fail to work right when the dumped Emacs is run.  */
      signal (SIGQUIT, fatal_error_signal);
      signal (SIGILL, fatal_error_signal);
      signal (SIGTRAP, fatal_error_signal);
1104 1105 1106 1107 1108 1109
#ifdef SIGUSR1
      signal (SIGUSR1, handle_USR1_signal);
#ifdef SIGUSR2
      signal (SIGUSR2, handle_USR2_signal);
#endif
#endif
1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130
#ifdef SIGABRT
      signal (SIGABRT, fatal_error_signal);
#endif
#ifdef SIGHWE
      signal (SIGHWE, fatal_error_signal);
#endif
#ifdef SIGPRE
      signal (SIGPRE, fatal_error_signal);
#endif
#ifdef SIGORE
      signal (SIGORE, fatal_error_signal);
#endif
#ifdef SIGUME
      signal (SIGUME, fatal_error_signal);
#endif
#ifdef SIGDLK
      signal (SIGDLK, fatal_error_signal);
#endif
#ifdef SIGCPULIM
      signal (SIGCPULIM, fatal_error_signal);
#endif
1131 1132
#ifdef SIGIOT
      /* This is missing on some systems - OS/2, for example.  */
Jim Blandy's avatar
Jim Blandy committed
1133
      signal (SIGIOT, fatal_error_signal);
1134
#endif
Jim Blandy's avatar
Jim Blandy committed
1135 1136 1137 1138
#ifdef SIGEMT
      signal (SIGEMT, fatal_error_signal);
#endif
      signal (SIGFPE, fatal_error_signal);
1139
#ifdef SIGBUS
Jim Blandy's avatar
Jim Blandy committed
1140
      signal (SIGBUS, fatal_error_signal);
1141
#endif
Jim Blandy's avatar
Jim Blandy committed
1142
      signal (SIGSEGV, fatal_error_signal);
1143
#ifdef SIGSYS
Jim Blandy's avatar
Jim Blandy committed
1144
      signal (SIGSYS, fatal_error_signal);
1145
#endif
Jim Blandy's avatar
Jim Blandy committed
1146 1147 1148 1149 1150 1151 1152 1153
      signal (SIGTERM, fatal_error_signal);
#ifdef SIGXCPU
      signal (SIGXCPU, fatal_error_signal);
#endif
#ifdef SIGXFSZ
      signal (SIGXFSZ, fatal_error_signal);
#endif /* SIGXFSZ */

1154 1155 1156 1157 1158
#ifdef SIGDANGER
      /* This just means available memory is getting low.  */
      signal (SIGDANGER, memory_warning_signal);
#endif

Jim Blandy's avatar
Jim Blandy committed
1159
#ifdef AIX
1160 1161
/* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU.  */
      signal (SIGXCPU, fatal_error_signal);
1162
#ifndef _I386
Jim Blandy's avatar
Jim Blandy committed
1163
      signal (SIGIOINT, fatal_error_signal);
1164
#endif
Jim Blandy's avatar
Jim Blandy committed
1165 1166 1167 1168 1169 1170 1171 1172 1173
      signal (SIGGRANT, fatal_error_signal);
      signal (SIGRETRACT, fatal_error_signal);
      signal (SIGSOUND, fatal_error_signal);
      signal (SIGMSG, fatal_error_signal);
#endif /* AIX */
    }

  noninteractive1 = noninteractive;

Pavel Janík's avatar
Pavel Janík committed
1174
/* Perform basic initializations (not merely interning symbols).  */
Jim Blandy's avatar
Jim Blandy committed
1175 1176 1177 1178 1179 1180

  if (!initialized)
    {
      init_alloc_once ();
      init_obarray ();
      init_eval_once ();
1181 1182
      init_charset_once ();
      init_coding_once ();
Jim Blandy's avatar
Jim Blandy committed
1183
      init_syntax_once ();	/* Create standard syntax table.  */
1184
      init_category_once ();	/* Create standard category table.  */
Pavel Janík's avatar
Pavel Janík committed
1185
		      /* Must be done before init_buffer.  */
Jim Blandy's avatar
Jim Blandy committed
1186
      init_casetab_once ();
Pavel Janík's avatar
Pavel Janík committed
1187 1188 1189 1190
      init_buffer_once ();	/* Create buffer table and some buffers.  */
      init_minibuf_once ();	/* Create list of minibuffers.  */
				/* Must precede init_window_once.  */

Gerd Moellmann's avatar
Gerd Moellmann committed
1191 1192 1193 1194 1195
      /* Call syms_of_xfaces before init_window_once because that
	 function creates Vterminal_frame.  Termcap frames now use
	 faces, and the face implementation uses some symbols as
	 face names.  */
      syms_of_xfaces ();
1196 1197 1198 1199 1200
      /* Call syms_of_keyboard before init_window_once because
	 keyboard sets up symbols that include some face names that
	 the X support will want to use.  This can happen when
	 CANNOT_DUMP is defined.  */
      syms_of_keyboard ();
Gerd Moellmann's avatar
Gerd Moellmann committed
1201

1202
#ifdef MAC_OS8
1203 1204 1205 1206
      /* init_window_once calls make_terminal_frame which on Mac OS
         creates a full-fledge output_mac type frame.  This does not
         work correctly before syms_of_textprop, syms_of_macfns,
         syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1207
         syms_of_frame, mac_initialize, and init_keyboard have already
1208
         been called.  */
1209 1210 1211 1212 1213 1214 1215 1216
      syms_of_textprop ();
      syms_of_macfns ();
      syms_of_ccl ();
      syms_of_fontset ();
      syms_of_macterm ();
      syms_of_macmenu ();
      syms_of_data ();
      syms_of_search ();
1217
      syms_of_frame ();
Pavel Janík's avatar
Pavel Janík committed
1218

1219
      mac_initialize ();
1220 1221 1222
      init_keyboard ();
#endif

Pavel Janík's avatar
Pavel Janík committed
1223
      init_window_once ();	/* Init the window system.  */
1224
      init_fileio_once ();	/* Must precede any path manipulation.  */
Jim Blandy's avatar
Jim Blandy committed
1225 1226 1227
    }

  init_alloc ();
1228 1229 1230 1231

  if (do_initial_setlocale)
    {
      fixup_locale ();
1232 1233
      Vsystem_messages_locale = Vprevious_system_messages_locale;
      Vsystem_time_locale = Vprevious_system_time_locale;
1234 1235
    }

Jim Blandy's avatar
Jim Blandy committed
1236 1237
  init_eval ();
  init_data ();
1238
#ifdef CLASH_DETECTION