emacs.c 65 KB
Newer Older
Jim Blandy's avatar
Jim Blandy committed
1
/* Fully extensible Emacs, running on Unix, intended for GNU.
Stefan Monnier's avatar
Stefan Monnier committed
2
   Copyright (C) 1985,86,87,93,94,95,97,98,1999,2001,02,2003
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
#include <sys/ioctl.h>
#endif

43 44 45 46
#ifdef WINDOWSNT
#include <fcntl.h>
#endif

Jim Blandy's avatar
Jim Blandy committed
47 48
#include "lisp.h"
#include "commands.h"
Joseph Arceneaux's avatar
Joseph Arceneaux committed
49
#include "intervals.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
50
#include "buffer.h"
Stefan Monnier's avatar
Stefan Monnier committed
51
#include "window.h"
Jim Blandy's avatar
Jim Blandy committed
52

53
#include "systty.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
54
#include "blockinput.h"
55
#include "syssignal.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
56
#include "process.h"
57
#include "frame.h"
58
#include "termhooks.h"
Andreas Schwab's avatar
Andreas Schwab committed
59
#include "keyboard.h"
Stefan Monnier's avatar
Stefan Monnier committed
60
#include "keymap.h"
Jim Blandy's avatar
Jim Blandy committed
61

62 63 64 65
#ifdef HAVE_SETLOCALE
#include <locale.h>
#endif

66 67 68 69 70
#ifdef HAVE_SETRLIMIT
#include <sys/time.h>
#include <sys/resource.h>
#endif

Jim Blandy's avatar
Jim Blandy committed
71 72 73 74
#ifndef O_RDWR
#define O_RDWR 2
#endif

75
#ifdef HAVE_SETPGID
76
#if !defined (USG) || defined (BSD_PGRPS)
77
#undef setpgrp
78 79
#define setpgrp setpgid
#endif
80
#endif
81

82 83
extern void malloc_warning P_ ((char *));
extern void set_time_zone_rule P_ ((char *));
Gerd Moellmann's avatar
Gerd Moellmann committed
84 85 86
#ifdef HAVE_INDEX
extern char *index P_ ((const char *, int));
#endif
87

88 89 90 91 92 93 94 95
/* 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
96
EMACS_INT gdb_data_seg_bits = 0;
97
#endif
Gerd Moellmann's avatar
Gerd Moellmann committed
98
EMACS_INT PVEC_FLAG = PSEUDOVECTOR_FLAG;
99

Pavel Janík's avatar
Pavel Janík committed
100
/* Command line args from shell, as list of strings.  */
Jim Blandy's avatar
Jim Blandy committed
101 102
Lisp_Object Vcommand_line_args;

103 104 105 106
/* The name under which Emacs was invoked, with any leading directory
   names discarded.  */
Lisp_Object Vinvocation_name;

107 108 109
/* The directory name from which Emacs was invoked.  */
Lisp_Object Vinvocation_directory;

110 111 112 113
/* 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
114 115 116
/* Hook run by `kill-emacs' before it does really anything.  */
Lisp_Object Vkill_emacs_hook;

Stefan Monnier's avatar
Stefan Monnier committed
117 118 119
/* An empty lisp string.  To avoid having to build any other.  */
Lisp_Object empty_string;

120
#ifdef SIGUSR1
Pavel Janík's avatar
Pavel Janík committed
121
/* Hooks for signal USR1 and USR2 handling.  */
122 123 124
Lisp_Object Vsignal_USR1_hook;
#ifdef SIGUSR2
Lisp_Object Vsignal_USR2_hook;
Pavel Janík's avatar
Pavel Janík committed
125
#endif
126 127
#endif

128 129 130
/* Search path separator.  */
Lisp_Object Vpath_separator;

Jim Blandy's avatar
Jim Blandy committed
131 132 133 134 135
/* Set nonzero after Emacs has started up the first time.
  Prevents reinitialization of the Lisp world and keymaps
  on subsequent starts.  */
int initialized;

136 137 138 139 140 141 142 143
#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 ();
144 145 146
/* 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;
147 148
#endif

149
/* Variable whose value is symbol giving operating system type.  */
Jim Blandy's avatar
Jim Blandy committed
150
Lisp_Object Vsystem_type;
151 152 153

/* Variable whose value is string giving configuration built for.  */
Lisp_Object Vsystem_configuration;
154 155 156 157 158

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

159 160
Lisp_Object Qfile_name_handler_alist;

161
/* Current and previous system locales for messages and time.  */
162 163 164 165
Lisp_Object Vsystem_messages_locale;
Lisp_Object Vprevious_system_messages_locale;
Lisp_Object Vsystem_time_locale;
Lisp_Object Vprevious_system_time_locale;
166

Juanma Barranquero's avatar
Juanma Barranquero committed
167
/* If non-zero, emacs should not attempt to use a window-specific code,
Pavel Janík's avatar
Pavel Janík committed
168
   but instead should use the virtual terminal under which it was started.  */
Jim Blandy's avatar
Jim Blandy committed
169 170
int inhibit_window_system;

171 172
/* 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
173
   priority; those functions have their own extern declaration.  */
174
EMACS_INT emacs_priority;
175

Pavel Janík's avatar
Pavel Janík committed
176 177
/* 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.  */
178 179
int running_asynch_code;

180
#ifdef BSD_PGRPS
181 182 183 184
/* See sysdep.c.  */
extern int inherited_pgroup;
#endif

Jim Blandy's avatar
Jim Blandy committed
185
#ifdef HAVE_X_WINDOWS
Pavel Janík's avatar
Pavel Janík committed
186
/* If non-zero, -d was specified, meaning we're using some window system.  */
Jim Blandy's avatar
Jim Blandy committed
187 188 189 190 191 192 193
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;

194
#ifdef HAVE_WINDOW_SYSTEM
Jim Blandy's avatar
Jim Blandy committed
195
extern Lisp_Object Vwindow_system;
196
#endif /* HAVE_WINDOW_SYSTEM */
Jim Blandy's avatar
Jim Blandy committed
197

198 199
extern Lisp_Object Vauto_save_list_file_name;

Jim Blandy's avatar
Jim Blandy committed
200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215
#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;
216 217 218 219

/* Save argv and argc.  */
char **initial_argv;
int initial_argc;
220 221

static void sort_args ();
Andreas Schwab's avatar
Andreas Schwab committed
222
void syms_of_emacs ();
Gerd Moellmann's avatar
Gerd Moellmann committed
223

224
#define USAGE1 "\
Gerd Moellmann's avatar
Gerd Moellmann committed
225 226 227 228 229 230 231 232 233 234 235 236
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\
237
--script FILE           run FILE as an Emacs Lisp script.\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
238 239 240 241 242 243
--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
244
--no-splash		    do not display a splash screen on startup\n\
245
--no-window-system, -nw	    don't communicate with X, ignoring $DISPLAY\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
246 247 248 249 250 251 252 253
--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\
254 255 256
+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
257 258 259 260 261 262 263 264 265
--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\
266 267 268
\n"

#define USAGE2 "\
269
Display options:\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
270 271 272 273
\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\
274 275 276 277
--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
278 279
--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
280
--font, -fn FONT		default font; must be fixed-width\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
281
--foreground-color, -fg COLOR	window foreground color\n\
282 283 284
--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
285 286 287 288
--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\
289
--line-spacing, -lsp PIXELS	additional space to put between lines\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
290 291 292
--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
293
--title, -T, -wn TITLE		title for Emacs windows\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
294 295 296 297 298 299 300 301 302
--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\
303 304 305 306
\n"

#define USAGE3 "\
Report bugs to %s.  First, please see the Bugs\n\
Gerd Moellmann's avatar
Gerd Moellmann committed
307 308
section of the Emacs manual or the file BUGS.\n"

Jim Blandy's avatar
Jim Blandy committed
309

Pavel Janík's avatar
Pavel Janík committed
310
/* Signal code for the fatal signal that was received.  */
Jim Blandy's avatar
Jim Blandy committed
311 312
int fatal_error_code;

Pavel Janík's avatar
Pavel Janík committed
313
/* Nonzero if handling a fatal error already.  */
Jim Blandy's avatar
Jim Blandy committed
314 315
int fatal_error_in_progress;

Pavel Janík's avatar
Pavel Janík committed
316
/* If non-null, call this function from fatal_error_signal before
317 318 319 320 321
   committing suicide.  */

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


322 323 324 325 326
#ifdef SIGUSR1
SIGTYPE
handle_USR1_signal (sig)
     int sig;
{
327 328
  struct input_event buf;

329
  bzero (&buf, sizeof buf);
330
  buf.kind = USER_SIGNAL_EVENT;
331
  buf.frame_or_window = selected_frame;
332 333

  kbd_buffer_store_event (&buf);
334
}
335
#endif /* SIGUSR1 */
Richard M. Stallman's avatar
Richard M. Stallman committed
336

337 338 339 340 341
#ifdef SIGUSR2
SIGTYPE
handle_USR2_signal (sig)
     int sig;
{
342 343
  struct input_event buf;

344
  bzero (&buf, sizeof buf);
345
  buf.kind = USER_SIGNAL_EVENT;
346
  buf.code = 1;
347
  buf.frame_or_window = selected_frame;
348 349

  kbd_buffer_store_event (&buf);
350
}
351
#endif /* SIGUSR2 */
352

Pavel Janík's avatar
Pavel Janík committed
353
/* Handle bus errors, invalid instruction, etc.  */
Jim Blandy's avatar
Jim Blandy committed
354
SIGTYPE
Jim Blandy's avatar
Jim Blandy committed
355 356 357 358 359 360
fatal_error_signal (sig)
     int sig;
{
  fatal_error_code = sig;
  signal (sig, SIG_DFL);

361 362
  TOTALLY_UNBLOCK_INPUT;

Jim Blandy's avatar
Jim Blandy committed
363
  /* If fatal error occurs in code below, avoid infinite recursion.  */
364 365 366
  if (! fatal_error_in_progress)
    {
      fatal_error_in_progress = 1;
Jim Blandy's avatar
Jim Blandy committed
367

368
      shut_down_emacs (sig, 0, Qnil);
369
    }
Jim Blandy's avatar
Jim Blandy committed
370 371 372 373

#ifdef VMS
  LIB$STOP (SS$_ABORT);
#else
374 375 376 377
  /* 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.  */
378
#ifndef MSDOS
379
  sigunblock (sigmask (fatal_error_code));
380
#endif
381 382 383

  if (fatal_error_signal_hook)
    fatal_error_signal_hook ();
Pavel Janík's avatar
Pavel Janík committed
384

Jim Blandy's avatar
Jim Blandy committed
385 386 387
  kill (getpid (), fatal_error_code);
#endif /* not VMS */
}
388 389 390

#ifdef SIGDANGER

Richard M. Stallman's avatar
Richard M. Stallman committed
391
/* Handler for SIGDANGER.  */
392 393 394 395 396 397 398
SIGTYPE
memory_warning_signal (sig)
     int sig;
{
  signal (sig, memory_warning_signal);

  malloc_warning ("Operating system warns that virtual memory is running low.\n");
399 400 401

  /* It might be unsafe to call do_auto_save now.  */
  force_auto_save_soon ();
402 403
}
#endif
Richard M. Stallman's avatar
Richard M. Stallman committed
404 405

/* We define abort, rather than using it from the library,
Karl Heuer's avatar
Karl Heuer committed
406
   so that GDB can return from a breakpoint here.
Pavel Janík's avatar
Pavel Janík committed
407
   MSDOS has its own definition in msdos.c.  */
Richard M. Stallman's avatar
Richard M. Stallman committed
408

409
#if ! defined (DOS_NT) && ! defined (NO_ABORT)
410 411 412 413 414 415

#ifndef ABORT_RETURN_TYPE
#define ABORT_RETURN_TYPE void
#endif

ABORT_RETURN_TYPE
Richard M. Stallman's avatar
Richard M. Stallman committed
416 417 418
abort ()
{
  kill (getpid (), SIGABRT);
419 420
  /* This shouldn't be executed, but it prevents a warning.  */
  exit (1);
Richard M. Stallman's avatar
Richard M. Stallman committed
421
}
Karl Heuer's avatar
Karl Heuer committed
422
#endif
Richard M. Stallman's avatar
Richard M. Stallman committed
423

Jim Blandy's avatar
Jim Blandy committed
424

Pavel Janík's avatar
Pavel Janík committed
425
/* Code for dealing with Lisp access to the Unix command line.  */
Jim Blandy's avatar
Jim Blandy committed
426

Andreas Schwab's avatar
Andreas Schwab committed
427
static void
Jim Blandy's avatar
Jim Blandy committed
428 429 430 431 432 433
init_cmdargs (argc, argv, skip_args)
     int argc;
     char **argv;
     int skip_args;
{
  register int i;
434
  Lisp_Object name, dir, tem;
Juanma Barranquero's avatar
Juanma Barranquero committed
435
  int count = SPECPDL_INDEX ();
436
  Lisp_Object raw_name;
Jim Blandy's avatar
Jim Blandy committed
437

438 439 440
  initial_argv = argv;
  initial_argc = argc;

441 442 443 444 445 446 447 448 449 450 451
  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);

452 453 454 455 456 457
  /* 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,
458
		       Vexec_suffixes, &found, make_number (X_OK));
459
      if (yes == 1)
460 461 462 463 464 465 466 467
	{
	  /* 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);
	}
468
    }
469

470 471
  if (!NILP (Vinvocation_directory)
      && NILP (Ffile_name_absolute_p (Vinvocation_directory)))
472 473
    /* Emacs was started with relative path, like ./emacs.
       Make it absolute.  */
474 475
    Vinvocation_directory = Fexpand_file_name (Vinvocation_directory, Qnil);

476 477 478 479 480 481 482 483
  Vinstallation_directory = Qnil;

  if (!NILP (Vinvocation_directory))
    {
      dir = Vinvocation_directory;
      name = Fexpand_file_name (Vinvocation_name, dir);
      while (1)
	{
484
	  Lisp_Object tem, lib_src_exists;
485 486
	  Lisp_Object etc_exists, info_exists;

487 488 489 490 491
	  /* 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);
492

493
#ifdef MSDOS
494 495 496 497 498
	  /* 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);
499 500 501
#else
	  info_exists = Qnil;
#endif
502 503

	  if (!NILP (lib_src_exists) || !NILP (info_exists))
504
	    {
505 506 507
	      tem = Fexpand_file_name (build_string ("etc"), dir);
	      etc_exists = Ffile_exists_p (tem);
	      if (!NILP (etc_exists))
508
		{
509 510 511
		  Vinstallation_directory
		    = Ffile_name_as_directory (dir);
		  break;
512 513 514 515
		}
	    }

	  /* See if dir's parent contains those subdirs.  */
516 517
	  tem = Fexpand_file_name (build_string ("../lib-src"), dir);
	  lib_src_exists = Ffile_exists_p (tem);
518

519 520 521

#ifdef MSDOS
	  /* See the MSDOS commentary above.  */
522 523
	  tem = Fexpand_file_name (build_string ("../info"), dir);
	  info_exists = Ffile_exists_p (tem);
524 525 526
#else
	  info_exists = Qnil;
#endif
527 528

	  if (!NILP (lib_src_exists) || !NILP (info_exists))
529
	    {
530 531 532
	      tem = Fexpand_file_name (build_string ("../etc"), dir);
	      etc_exists = Ffile_exists_p (tem);
	      if (!NILP (etc_exists))
533
		{
534 535 536 537
		  tem = Fexpand_file_name (build_string (".."), dir);
		  Vinstallation_directory
		    = Ffile_name_as_directory (tem);
		  break;
538 539 540 541 542 543 544 545
		}
	    }

	  /* 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))
	    {
546
	      name = Fexpand_file_name (tem, dir);
547 548 549 550 551 552 553
	      dir = Ffile_name_directory (name);
	    }
	  else
	    break;
	}
    }

Jim Blandy's avatar
Jim Blandy committed
554 555 556 557 558 559 560 561
  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);
    }
562 563

  unbind_to (count, Qnil);
Jim Blandy's avatar
Jim Blandy committed
564
}
565 566

DEFUN ("invocation-name", Finvocation_name, Sinvocation_name, 0, 0, 0,
Pavel Janík's avatar
Pavel Janík committed
567 568 569
       doc: /* Return the program name that was used to run Emacs.
Any directory names are omitted.  */)
     ()
570 571 572 573
{
  return Fcopy_sequence (Vinvocation_name);
}

574
DEFUN ("invocation-directory", Finvocation_directory, Sinvocation_directory,
Pavel Janík's avatar
Pavel Janík committed
575 576 577
       0, 0, 0,
       doc: /* Return the directory name in which the Emacs executable was located.  */)
     ()
578 579 580 581
{
  return Fcopy_sequence (Vinvocation_directory);
}

Jim Blandy's avatar
Jim Blandy committed
582 583 584

#ifdef VMS
#ifdef LINK_CRTL_SHARE
585
#ifdef SHARABLE_LIB_BUG
Jim Blandy's avatar
Jim Blandy committed
586
extern noshare char **environ;
587
#endif /* SHARABLE_LIB_BUG */
Jim Blandy's avatar
Jim Blandy committed
588 589 590
#endif /* LINK_CRTL_SHARE */
#endif /* VMS */

591 592 593 594 595 596
#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

597
#ifndef ORDINARY_LINK
598 599 600 601 602
/* 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__
603
#ifndef GCC_CTORS_IN_LIBC
Andreas Schwab's avatar
Andreas Schwab committed
604
void __do_global_ctors ()
605
{}
Andreas Schwab's avatar
Andreas Schwab committed
606
void __do_global_ctors_aux ()
607
{}
Andreas Schwab's avatar
Andreas Schwab committed
608
void __do_global_dtors ()
609
{}
Richard M. Stallman's avatar
Richard M. Stallman committed
610
/* GNU/Linux has a bug in its library; avoid an error.  */
611
#ifndef GNU_LINUX
612
char * __CTOR_LIST__[2] = { (char *) (-1), 0 };
613
#endif
614
char * __DTOR_LIST__[2] = { (char *) (-1), 0 };
615
#endif /* GCC_CTORS_IN_LIBC */
Andreas Schwab's avatar
Andreas Schwab committed
616
void __main ()
617 618
{}
#endif /* __GNUC__ */
619
#endif /* ORDINARY_LINK */
620

Karl Heuer's avatar
Karl Heuer committed
621 622 623 624 625 626 627 628 629
/* 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.  */
630

Karl Heuer's avatar
Karl Heuer committed
631
static int
632
argmatch (argv, argc, sstr, lstr, minlen, valptr, skipptr)
Karl Heuer's avatar
Karl Heuer committed
633
     char **argv;
634
     int argc;
Karl Heuer's avatar
Karl Heuer committed
635 636 637 638 639 640
     char *sstr;
     char *lstr;
     int minlen;
     char **valptr;
     int *skipptr;
{
641
  char *p = NULL;
Karl Heuer's avatar
Karl Heuer committed
642
  int arglen;
643 644 645 646 647 648 649
  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
650 651 652 653 654 655 656 657 658 659 660 661 662 663 664
  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));
665
  if (lstr == 0 || arglen < minlen || strncmp (arg, lstr, arglen) != 0)
Karl Heuer's avatar
Karl Heuer committed
666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689
    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;
    }
}

690
#ifdef DOUG_LEA_MALLOC
Jim Blandy's avatar
Jim Blandy committed
691

692 693 694 695 696 697 698
/* 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 ()
{
699
#ifndef USE_CRT_DLL
700
  extern char **environ;
701
#endif
702

703 704
  if (initialized)
    {
705 706 707
      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
708 709 710 711
	   malloc checking.  Can't use unsetenv, since that calls malloc.  */
	{
	  char **p;

712
	  for (p = environ; p && *p; p++)
713 714 715 716 717 718 719 720
	    if (strncmp (*p, "MALLOC_CHECK_=", 14) == 0)
	      {
		do
		  *p = p[1];
		while (*++p);
		break;
	      }
	}
721

722 723 724
      malloc_set_state (malloc_state_ptr);
      free (malloc_state_ptr);
    }
725 726
  else
    malloc_using_checking = getenv ("MALLOC_CHECK_") != NULL;
727 728 729 730 731 732
}

void (*__malloc_initialize_hook) () = malloc_initialize_hook;

#endif /* DOUG_LEA_MALLOC */

733 734 735 736 737 738 739

#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.  */

740 741
char *
bug_reporting_address ()
742
{
743
  int count = 0;
744 745 746 747 748 749 750 751 752
  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;

753
  string = SDATA (temp);
754

755 756 757 758 759 760 761
  /* Count dots in `emacs-version'.  */
  while (*string)
    {
      if (*string == '.')
	count++;
      string++;
    }
762 763 764

  /* When `emacs-version' has at least three dots, it is development or
     pretest version of Emacs.  */
765
  return count >= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS : REPORT_EMACS_BUG_ADDRESS;
766 767 768
}


769 770
/* ARGSUSED */
int
Dave Love's avatar
Dave Love committed
771 772 773 774 775
main (argc, argv
#ifdef VMS
, envp
#endif
)
776 777
     int argc;
     char **argv;
Dave Love's avatar
Dave Love committed
778
#ifdef VMS
779
     char **envp;
Dave Love's avatar
Dave Love committed
780
#endif
781
{
782
#if GC_MARK_STACK
783 784
  Lisp_Object dummy;
#endif
785
  char stack_bottom_variable;
786
  int do_initial_setlocale;
787
  int skip_args = 0;
788
#ifndef USE_CRT_DLL
789
  extern int errno;
790
#endif
791 792 793 794
#ifdef HAVE_SETRLIMIT
  struct rlimit rlim;
#endif
  int no_loadup = 0;
Richard M. Stallman's avatar
Richard M. Stallman committed
795
  char *junk = 0;
796

797
#if GC_MARK_STACK
798 799 800 801
  extern Lisp_Object *stack_base;
  stack_base = &dummy;
#endif

802 803
#ifdef LINUX_SBRK_BUG
  __sbrk (1);
804 805
#endif

806 807 808 809 810
#ifdef RUN_TIME_REMAP
  if (initialized)
    run_time_remap (argv[0]);
#endif

811
#ifdef MAC_OSX
812 813 814 815
  if (!initialized)
    unexec_init_emacs_zone ();
#endif

816
  sort_args (argc, argv);
817 818
  argc = 0;
  while (argv[argc]) argc++;
819

820 821 822 823
  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)
824 825 826 827 828 829 830 831 832 833
    {
      Lisp_Object tem;
      tem = Fsymbol_value (intern ("emacs-version"));
      if (!STRINGP (tem))
	{
	  fprintf (stderr, "Invalid value of `emacs-version'\n");
	  exit (1);
	}
      else
	{
834
	  printf ("GNU Emacs %s\n", SDATA (tem));
835
	  printf ("Copyright (C) 2002 Free Software Foundation, Inc.\n");
836 837 838 839
	  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
840
	  printf ("see the file named COPYING.\n");
841 842 843 844
	  exit (0);
	}
    }

Jim Blandy's avatar
Jim Blandy committed
845 846
/* Map in shared memory, if we are using that.  */
#ifdef HAVE_SHM
847
  if (argmatch (argv, argc, "-nl", "--no-shared-memory", 6, NULL, &skip_args))
Jim Blandy's avatar
Jim Blandy committed
848 849 850 851 852 853 854 855 856 857 858 859 860
    {
      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

861
#ifdef NeXT
862 863 864 865 866 867 868
  {
    extern int malloc_cookie;
    /* This helps out unexnext.c.  */
    if (initialized)
      if (malloc_jumpstart (malloc_cookie) != 0)
	printf ("malloc jumpstart failed!\n");
  }
869 870
#endif /* NeXT */

871 872 873 874 875 876 877
#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
878
#ifdef VMS
Pavel Janík's avatar
Pavel Janík committed
879
  /* If -map specified, map the data file in.  */
Karl Heuer's avatar
Karl Heuer committed
880 881
  {
    char *file;
882
    if (argmatch (argv, argc, "-map", "--map-data", 3, &mapin_file, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
883 884
      mapin_data (file);
  }
Jim Blandy's avatar
Jim Blandy committed
885 886

#ifdef LINK_CRTL_SHARE
887
#ifdef SHARABLE_LIB_BUG
Pavel Janík's avatar
Pavel Janík committed
888
  /* Bletcherous shared libraries!  */
Jim Blandy's avatar
Jim Blandy committed
889 890 891 892 893 894 895 896
  if (!stdin)
    stdin = fdopen (0, "r");
  if (!stdout)
    stdout = fdopen (1, "w");
  if (!stderr)
    stderr = fdopen (2, "w");
  if (!environ)
    environ = envp;
897
#endif /* SHARABLE_LIB_BUG */
Jim Blandy's avatar
Jim Blandy committed
898 899 900
#endif /* LINK_CRTL_SHARE */
#endif /* VMS */

901
#if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
902 903 904 905 906 907 908 909
  /* 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))
910
    {
911
      long newlim;
912
      extern int re_max_failures;
913 914 915 916 917 918 919 920
      /* 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;
921 922 923 924 925 926 927
#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
928
      if (newlim > rlim.rlim_max)
929 930
	{
	  newlim = rlim.rlim_max;
931 932
	  /* Don't let regex.c overflow the stack we have.  */
	  re_max_failures = (newlim - 200000) / ratio;
933
	}
934 935 936
      if (rlim.rlim_cur < newlim)
	rlim.rlim_cur = newlim;

937 938
      setrlimit (RLIMIT_STACK, &rlim);
    }
939
#endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
940

Jim Blandy's avatar
Jim Blandy committed
941 942 943 944 945
  /* Record (approximately) where the stack begins.  */
  stack_bottom = &stack_bottom_variable;

#ifdef USG_SHARED_LIBRARIES
  if (bss_end)
946
    brk ((void *)bss_end);
Jim Blandy's avatar
Jim Blandy committed
947 948 949
#endif

  clearerr (stdin);
950

Jim Blandy's avatar
Jim Blandy committed
951
#ifndef SYSTEM_MALLOC
952 953
  /* Arrange to get warning messages as memory fills up.  */
  memory_warnings (0, malloc_warning);
954

955 956 957
  /* Call malloc at least once, to run the initial __malloc_hook.
     Also call realloc and free for consistency.  */
  free (realloc (malloc (4), 4));
958 959 960

  /* Arrange to disable interrupt input inside malloc etc.  */
  uninterrupt_malloc ();
Jim Blandy's avatar
Jim Blandy committed
961 962
#endif	/* not SYSTEM_MALLOC */

963
#if defined (MSDOS) || defined (WINDOWSNT)
964 965 966
  /* We do all file input/output as binary files.  When we need to translate
     newlines, we do that manually.  */
  _fmode = O_BINARY;
967
#endif /* MSDOS || WINDOWSNT */
968

969
#ifdef MSDOS
970 971 972 973 974 975 976 977 978
#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 */
979 980 981
  (stdin)->_flag &= ~_IOTEXT;
  (stdout)->_flag &= ~_IOTEXT;
  (stderr)->_flag &= ~_IOTEXT;
982
#endif /* not __DJGPP__ >= 2 */
983 984
#endif /* MSDOS */

985
#ifdef SET_EMACS_PRIORITY
986
  if (emacs_priority)
987
    nice (emacs_priority);
Jim Blandy's avatar
Jim Blandy committed
988
  setuid (getuid ());
989
#endif /* SET_EMACS_PRIORITY */
Jim Blandy's avatar
Jim Blandy committed
990

991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004
  /* 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, "");

1005
#ifdef EXTRA_INITIALIZE
1006
  EXTRA_INITIALIZE;
1007 1008
#endif

Jim Blandy's avatar
Jim Blandy committed
1009 1010
  inhibit_window_system = 0;

Pavel Janík's avatar
Pavel Janík committed
1011
  /* Handle the -t switch, which specifies filename to use as terminal.  */
1012 1013 1014 1015 1016 1017
  while (1)
    {
      char *term;
      if (argmatch (argv, argc, "-t", "--terminal", 4, &term, &skip_args))
	{
	  int result;
1018 1019 1020
	  emacs_close (0);
	  emacs_close (1);
	  result = emacs_open (term, O_RDWR, 0);
1021 1022 1023
	  if (result < 0)
	    {
	      char *errstring = strerror (errno);
1024
	      fprintf (stderr, "%s: %s: %s\n", argv[0], term, errstring);
1025 1026 1027 1028 1029
	      exit (1);
	    }
	  dup (0);
	  if (! isatty (0))
	    {
1030
	      fprintf (stderr, "%s: %s: not a tty\n", argv[0], term);
1031 1032 1033
	      exit (1);
	    }
	  fprintf (stderr, "Using %s\n", term);
1034
#ifdef HAVE_WINDOW_SYSTEM
1035
	  inhibit_window_system = 1; /* -t => -nw */
Jim Blandy's avatar
Jim Blandy committed
1036
#endif
1037 1038 1039 1040 1041
	}
      else
	break;
    }

1042 1043 1044 1045
  /* 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
1046
    inhibit_window_system = 1;
Jim Blandy's avatar
Jim Blandy committed
1047

Karl Heuer's avatar
Karl Heuer committed
1048
  /* Handle the -batch switch, which means don't do interactive display.  */
Jim Blandy's avatar
Jim Blandy committed
1049
  noninteractive = 0;
1050
  if (argmatch (argv, argc, "-batch", "--batch", 5, NULL, &skip_args))
Karl Heuer's avatar
Karl Heuer committed
1051
    noninteractive = 1;
Richard M. Stallman's avatar
Richard M. Stallman committed
1052 1053 1054 1055 1056 1057 1058 1059 1060
  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
1061

Pavel Janík's avatar
Pavel Janík committed
1062
  /* Handle the --help option, which gives a usage message.  */
1063
  if (argmatch (argv, argc, "-help", "--help", 3, NULL, &skip_args))
Jim Blandy's avatar
Jim Blandy committed
1064
    {
1065 1066
      printf (USAGE1, argv[0]);
      printf (USAGE2);
1067
      printf (USAGE3, bug_reporting_address ());
Karl Heuer's avatar
Karl Heuer committed
1068
      exit (0);
Jim Blandy's avatar
Jim Blandy committed
1069 1070
    }

1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085
  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
1086 1087
  init_signals ();

1088 1089 1090 1091 1092 1093 1094
  /* Don't catch SIGHUP if dumping.  */
  if (1
#ifndef CANNOT_DUMP
      && initialized
#endif
      )
    {
1095
      sigblock (sigmask (SIGHUP));
1096 1097 1098 1099 1100
      /* 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);
1101
      sigunblock (sigmask (SIGHUP));
1102 1103
    }

Jim Blandy's avatar
Jim Blandy committed
1104 1105 1106 1107 1108 1109 1110 1111
  if (
#ifndef CANNOT_DUMP
      ! noninteractive || initialized
#else
      1
#endif
      )
    {
1112
      /* Don't catch these signals in batch mode if dumping.
Jim Blandy's avatar
Jim Blandy committed
1113 1114 1115 1116 1117
	 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);
1118 1119 1120 1121 1122 1123
#ifdef SIGUSR1
      signal (SIGUSR1, handle_USR1_signal);
#ifdef SIGUSR2
      signal (SIGUSR2, handle_USR2_signal);
#endif
#endif
1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144
#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
1145 1146
#ifdef SIGIOT
      /* This is missing on some systems - OS/2, for example.  */
Jim Blandy's avatar
Jim Blandy committed
1147
      signal (SIGIOT, fatal_error_signal);
1148
#endif
Jim Blandy's avatar
Jim Blandy committed
1149 1150 1151 1152
#ifdef SIGEMT
      signal (SIGEMT, fatal_error_signal);
#endif
      signal (SIGFPE, fatal_error_signal);
1153
#ifdef SIGBUS
Jim Blandy's avatar
Jim Blandy committed
1154
      signal (SIGBUS, fatal_error_signal);
1155
#endif
Jim Blandy's avatar
Jim Blandy committed
1156
      signal (SIGSEGV, fatal_error_signal);
1157
#ifdef SIGSYS
Jim Blandy's avatar
Jim Blandy committed
1158
      signal (SIGSYS, fatal_error_signal);
1159
#endif
Jim Blandy's avatar
Jim Blandy committed
1160 1161 1162 1163 1164 1165 1166 1167
      signal (SIGTERM, fatal_error_signal);
#ifdef SIGXCPU
      signal (SIGXCPU, fatal_error_signal);
#endif
#ifdef SIGXFSZ
      signal (SIGXFSZ, fatal_error_signal);
#endif /* SIGXFSZ */

1168 1169 1170 1171 1172
#ifdef SIGDANGER
      /* This just means available memory is getting low.  */
      signal (SIGDANGER, memory_warning_signal);
#endif

Jim Blandy's avatar
Jim Blandy committed
1173
#ifdef AIX
1174 1175
/* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU.  */
      signal (SIGXCPU, fatal_error_signal);
1176
#ifndef _I386
Jim Blandy's avatar
Jim Blandy committed
1177
      signal (SIGIOINT, fatal_error_signal);
1178
#endif
Jim Blandy's avatar
Jim Blandy committed
1179 1180 1181 1182 1183 1184 1185 1186 1187
      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
1188
/* Perform basic initializations (not merely interning symbols).  */
Jim Blandy's avatar
Jim Blandy committed
1189 1190 1191 1192 1193 1194

  if (!initialized)
    {
      init_alloc_once ();
      init_obarray ();
      init_eval_once ();
1195 1196
      init_charset_once ();
      init_coding_once ();
Jim Blandy's avatar
Jim Blandy committed
1197
      init_syntax_once ();	/* Create standard syntax table.  */
1198
      init_category_once ();	/* Create standard category table.  */
Pavel Janík's avatar
Pavel Janík committed
1199
		      /* Must be done before init_buffer.  */
Jim Blandy's avatar
Jim Blandy committed
1200
      init_casetab_once ();
Pavel Janík's avatar
Pavel Janík committed
1201 1202 1203 1204
      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
1205 1206 1207 1208 1209
      /* 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 ();
1210 1211 1212 1213 1214
      /* 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
1215

1216
#ifdef MAC_OS8
1217 1218 1219 1220
      /* 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,
1221
         syms_of_frame, mac_initialize, and init_keyboard have already
1222
         been called.  */
1223 1224 1225 1226 1227 1228 1229 1230
      syms_of_textprop ();
      syms_of_macfns ();
      syms_of_ccl ();
      syms_of_fontset ();
      syms_of_macterm ();
      syms_of_macmenu ();
      syms_of_data ();
      syms_of_search ();