1 /* Fully extensible Emacs, running on Unix, intended for GNU.
2 Copyright (C) 1985, 1986, 1987, 1993, 1994, 1995, 1997, 1998, 1999,
3 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
5 This file is part of GNU Emacs.
7 GNU Emacs 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, or (at your option)
12 GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
28 #include <sys/types.h>
40 #include <sys/ioctl.h>
45 #include <windows.h> /* just for w32.h */
47 #include "w32heap.h" /* for prototype of sbrk */
52 #include "intervals.h"
57 #include "blockinput.h"
58 #include "syssignal.h"
61 #include "termhooks.h"
71 #include <sys/resource.h>
74 #ifdef HAVE_PERSONALITY_LINUX32
75 #include <sys/personality.h>
83 #if !defined (USG) || defined (BSD_PGRPS)
85 #define setpgrp setpgid
89 extern void malloc_warning
P_ ((char *));
90 extern void set_time_zone_rule
P_ ((char *));
92 extern char *index
P_ ((const char *, int));
95 /* Make these values available in GDB, which doesn't see macros. */
103 int gdb_use_union
= 0;
105 int gdb_use_union
= 1;
107 EMACS_INT gdb_valbits
= VALBITS
;
108 EMACS_INT gdb_gctypebits
= GCTYPEBITS
;
110 EMACS_INT gdb_data_seg_bits
= DATA_SEG_BITS
;
112 EMACS_INT gdb_data_seg_bits
= 0;
114 EMACS_INT PVEC_FLAG
= PSEUDOVECTOR_FLAG
;
115 EMACS_INT gdb_array_mark_flag
= ARRAY_MARK_FLAG
;
116 /* GDB might say "No enum type named pvec_type" if we don't have at
117 least one symbol with that type, and then xbacktrace could fail. */
118 enum pvec_type gdb_pvec_type
= PVEC_TYPE_MASK
;
120 /* Command line args from shell, as list of strings. */
121 Lisp_Object Vcommand_line_args
;
123 /* The name under which Emacs was invoked, with any leading directory
125 Lisp_Object Vinvocation_name
;
127 /* The directory name from which Emacs was invoked. */
128 Lisp_Object Vinvocation_directory
;
130 /* The directory name in which to find subdirs such as lisp and etc.
131 nil means get them only from PATH_LOADSEARCH. */
132 Lisp_Object Vinstallation_directory
;
134 /* Hook run by `kill-emacs' before it does really anything. */
135 Lisp_Object Vkill_emacs_hook
;
137 /* An empty lisp string. To avoid having to build any other. */
138 Lisp_Object empty_string
;
140 /* Search path separator. */
141 Lisp_Object Vpath_separator
;
143 /* Set nonzero after Emacs has started up the first time.
144 Prevents reinitialization of the Lisp world and keymaps
145 on subsequent starts. */
148 #ifdef DOUG_LEA_MALLOC
149 /* Preserves a pointer to the memory allocated that copies that
150 static data inside glibc's malloc. */
151 void *malloc_state_ptr
;
152 /* From glibc, a routine that returns a copy of the malloc internal state. */
153 extern void *malloc_get_state ();
154 /* From glibc, a routine that overwrites the malloc internal state. */
155 extern int malloc_set_state ();
156 /* Non-zero if the MALLOC_CHECK_ enviroment variable was set while
157 dumping. Used to work around a bug in glibc's malloc. */
158 int malloc_using_checking
;
161 /* Variable whose value is symbol giving operating system type. */
162 Lisp_Object Vsystem_type
;
164 /* Variable whose value is string giving configuration built for. */
165 Lisp_Object Vsystem_configuration
;
167 /* Variable whose value is string giving configuration options,
168 for use when reporting bugs. */
169 Lisp_Object Vsystem_configuration_options
;
171 Lisp_Object Qfile_name_handler_alist
;
173 /* Current and previous system locales for messages and time. */
174 Lisp_Object Vsystem_messages_locale
;
175 Lisp_Object Vprevious_system_messages_locale
;
176 Lisp_Object Vsystem_time_locale
;
177 Lisp_Object Vprevious_system_time_locale
;
179 /* If non-zero, emacs should not attempt to use a window-specific code,
180 but instead should use the virtual terminal under which it was started. */
181 int inhibit_window_system
;
183 /* If nonzero, set Emacs to run at this priority. This is also used
184 in child_setup and sys_suspend to make sure subshells run at normal
185 priority; those functions have their own extern declaration. */
186 EMACS_INT emacs_priority
;
188 /* If non-zero, a filter or a sentinel is running. Tested to save the match
189 data on the first attempt to change it inside asynchronous code. */
190 int running_asynch_code
;
194 extern int inherited_pgroup
;
197 #ifdef HAVE_X_WINDOWS
198 /* If non-zero, -d was specified, meaning we're using some window system. */
202 /* An address near the bottom of the stack.
203 Tells GC how to save a copy of the stack. */
206 /* The address where the heap starts (from the first sbrk (0) call). */
207 static void *my_heap_start
;
209 /* The gap between BSS end and heap start as far as we can tell. */
210 static unsigned long heap_bss_diff
;
212 /* If the gap between BSS end and heap start is larger than this we try to
213 work around it, and if that fails, output a warning in dump-emacs. */
214 #define MAX_HEAP_BSS_DIFF (1024*1024)
217 #ifdef HAVE_WINDOW_SYSTEM
218 extern Lisp_Object Vinitial_window_system
;
219 #endif /* HAVE_WINDOW_SYSTEM */
221 extern Lisp_Object Vauto_save_list_file_name
;
223 extern Lisp_Object Vinhibit_redisplay
;
225 #ifdef USG_SHARED_LIBRARIES
226 /* If nonzero, this is the place to put the end of the writable segment
229 unsigned int bss_end
= 0;
232 /* Nonzero means running Emacs without interactive terminal. */
236 /* Value of Lisp variable `noninteractive'.
237 Normally same as C variable `noninteractive'
238 but nothing terrible happens if user sets this one. */
242 /* Save argv and argc. */
246 static void sort_args ();
247 void syms_of_emacs ();
249 /* MSVC needs each string be shorter than 2048 bytes, so the usage
250 strings below are split to not overflow this limit. */
252 Usage: %s [OPTION-OR-FILENAME]...\n\
254 Run Emacs, the extensible, customizable, self-documenting real-time\n\
255 display editor. The recommended way to start Emacs for normal editing\n\
256 is with no options at all.\n\
258 Run M-x info RET m emacs RET m emacs invocation RET inside Emacs to\n\
259 read the main documentation for these command-line arguments.\n\
261 Initialization options:\n\
263 --batch do not do interactive display; implies -q\n\
264 --debug-init enable Emacs Lisp debugger for init file\n\
265 --display, -d DISPLAY use X server DISPLAY\n\
266 --multibyte, --no-unibyte inhibit the effect of EMACS_UNIBYTE\n\
267 --no-desktop do not load a saved desktop\n\
268 --no-init-file, -q load neither ~/.emacs nor default.el\n\
269 --no-shared-memory, -nl do not use shared memory\n\
270 --no-site-file do not load site-start.el\n\
271 --no-splash do not display a splash screen on startup\n\
272 --no-window-system, -nw do not communicate with X, ignoring $DISPLAY\n\
273 --quick, -Q equivalent to -q --no-site-file --no-splash\n\
274 --script FILE run FILE as an Emacs Lisp script\n\
275 --terminal, -t DEVICE use DEVICE for terminal I/O\n\
276 --unibyte, --no-multibyte run Emacs in unibyte mode\n\
277 --user, -u USER load ~USER/.emacs instead of your own\n\
283 FILE visit FILE using find-file\n\
284 +LINE FILE visit FILE using find-file, then go to line LINE\n\
285 +LINE:COLUMN FILE visit FILE using find-file, then go to line LINE,\n\
287 --directory, -L DIR add DIR to variable load-path\n\
288 --eval EXPR evaluate Emacs Lisp expression EXPR\n\
289 --execute EXPR evaluate Emacs Lisp expression EXPR\n\
290 --file FILE visit FILE using find-file\n\
291 --find-file FILE visit FILE using find-file\n\
292 --funcall, -f FUNC call Emacs Lisp function FUNC with no arguments\n\
293 --insert FILE insert contents of FILE into current buffer\n\
294 --kill exit without asking for confirmation\n\
295 --load, -l FILE load Emacs Lisp FILE using the load function\n\
296 --visit FILE visit FILE using find-file\n\
302 --background-color, -bg COLOR window background color\n\
303 --basic-display, -D disable many display features;\n\
304 used for debugging Emacs\n\
305 --border-color, -bd COLOR main border color\n\
306 --border-width, -bw WIDTH width of main border\n\
307 --color, --color=MODE color mode for character terminals;\n\
308 MODE defaults to `auto', and can also\n\
309 be `never', `auto', `always',\n\
310 or a mode name like `ansi8'\n\
311 --cursor-color, -cr COLOR color of the Emacs cursor indicating point\n\
312 --font, -fn FONT default font; must be fixed-width\n\
313 --foreground-color, -fg COLOR window foreground color\n\
314 --fullheight, -fh make the first frame high as the screen\n\
315 --fullscreen, -fs make first frame fullscreen\n\
316 --fullwidth, -fw make the first frame wide as the screen\n\
317 --geometry, -g GEOMETRY window geometry\n\
318 --no-bitmap-icon, -nbi do not use picture of gnu for Emacs icon\n\
319 --iconic start Emacs in iconified state\n\
320 --internal-border, -ib WIDTH width between text and main border\n\
321 --line-spacing, -lsp PIXELS additional space to put between lines\n\
322 --mouse-color, -ms COLOR mouse cursor color in Emacs window\n\
323 --name NAME title for initial Emacs frame\n\
324 --no-blinking-cursor, -nbc disable blinking cursor\n\
325 --reverse-video, -r, -rv switch foreground and background\n\
326 --title, -T TITLE title for initial Emacs frame\n\
327 --vertical-scroll-bars, -vb enable vertical scroll bars\n\
328 --xrm XRESOURCES set additional X resources\n\
329 --help display this help and exit\n\
330 --version output version information and exit\n\
334 You can generally also specify long option names with a single -; for\n\
335 example, -batch as well as --batch. You can use any unambiguous\n\
336 abbreviation for a --option.\n\
338 Various environment variables and window system resources also affect\n\
339 Emacs' operation. See the main documentation.\n\
341 Report bugs to %s. First, please see the Bugs\n\
342 section of the Emacs manual or the file BUGS.\n"
345 /* Signal code for the fatal signal that was received. */
346 int fatal_error_code
;
348 /* Nonzero if handling a fatal error already. */
349 int fatal_error_in_progress
;
351 /* If non-null, call this function from fatal_error_signal before
352 committing suicide. */
354 void (*fatal_error_signal_hook
) P_ ((void));
356 #ifdef HAVE_GTK_AND_PTHREAD
357 /* When compiled with GTK and running under Gnome, multiple threads meay be
358 created. Keep track of our main thread to make sure signals are delivered
359 to it (see syssignal.h). */
361 pthread_t main_thread
;
367 handle_USR1_signal (sig
)
370 struct input_event buf
;
372 SIGNAL_THREAD_CHECK (sig
);
373 bzero (&buf
, sizeof buf
);
374 buf
.kind
= USER_SIGNAL_EVENT
;
375 buf
.frame_or_window
= selected_frame
;
377 kbd_buffer_store_event (&buf
);
383 handle_USR2_signal (sig
)
386 struct input_event buf
;
388 SIGNAL_THREAD_CHECK (sig
);
389 bzero (&buf
, sizeof buf
);
390 buf
.kind
= USER_SIGNAL_EVENT
;
392 buf
.frame_or_window
= selected_frame
;
394 kbd_buffer_store_event (&buf
);
398 /* Handle bus errors, invalid instruction, etc. */
400 fatal_error_signal (sig
)
403 SIGNAL_THREAD_CHECK (sig
);
404 fatal_error_code
= sig
;
405 signal (sig
, SIG_DFL
);
407 TOTALLY_UNBLOCK_INPUT
;
409 /* If fatal error occurs in code below, avoid infinite recursion. */
410 if (! fatal_error_in_progress
)
412 fatal_error_in_progress
= 1;
414 shut_down_emacs (sig
, 0, Qnil
);
418 LIB$
STOP (SS$_ABORT
);
420 /* Signal the same code; this time it will really be fatal.
421 Remember that since we're in a signal handler, the signal we're
422 going to send is probably blocked, so we have to unblock it if we
423 want to really receive it. */
425 sigunblock (sigmask (fatal_error_code
));
428 if (fatal_error_signal_hook
)
429 fatal_error_signal_hook ();
431 kill (getpid (), fatal_error_code
);
437 /* Handler for SIGDANGER. */
439 memory_warning_signal (sig
)
442 signal (sig
, memory_warning_signal
);
443 SIGNAL_THREAD_CHECK (sig
);
445 malloc_warning ("Operating system warns that virtual memory is running low.\n");
447 /* It might be unsafe to call do_auto_save now. */
448 force_auto_save_soon ();
452 /* We define abort, rather than using it from the library,
453 so that GDB can return from a breakpoint here.
454 MSDOS has its own definition in msdos.c. */
456 #if ! defined (DOS_NT) && ! defined (NO_ABORT)
458 #ifndef ABORT_RETURN_TYPE
459 #define ABORT_RETURN_TYPE void
465 kill (getpid (), SIGABRT
);
466 /* This shouldn't be executed, but it prevents a warning. */
472 /* Code for dealing with Lisp access to the Unix command line. */
475 init_cmdargs (argc
, argv
, skip_args
)
481 Lisp_Object name
, dir
, tem
;
482 int count
= SPECPDL_INDEX ();
483 Lisp_Object raw_name
;
488 raw_name
= build_string (argv
[0]);
490 /* Add /: to the front of the name
491 if it would otherwise be treated as magic. */
492 tem
= Ffind_file_name_handler (raw_name
, Qt
);
494 raw_name
= concat2 (build_string ("/:"), raw_name
);
496 Vinvocation_name
= Ffile_name_nondirectory (raw_name
);
497 Vinvocation_directory
= Ffile_name_directory (raw_name
);
499 /* If we got no directory in argv[0], search PATH to find where
500 Emacs actually came from. */
501 if (NILP (Vinvocation_directory
))
504 int yes
= openp (Vexec_path
, Vinvocation_name
,
505 Vexec_suffixes
, &found
, make_number (X_OK
));
508 /* Add /: to the front of the name
509 if it would otherwise be treated as magic. */
510 tem
= Ffind_file_name_handler (found
, Qt
);
512 found
= concat2 (build_string ("/:"), found
);
513 Vinvocation_directory
= Ffile_name_directory (found
);
517 if (!NILP (Vinvocation_directory
)
518 && NILP (Ffile_name_absolute_p (Vinvocation_directory
)))
519 /* Emacs was started with relative path, like ./emacs.
521 Vinvocation_directory
= Fexpand_file_name (Vinvocation_directory
, Qnil
);
523 Vinstallation_directory
= Qnil
;
525 if (!NILP (Vinvocation_directory
))
527 dir
= Vinvocation_directory
;
528 name
= Fexpand_file_name (Vinvocation_name
, dir
);
531 Lisp_Object tem
, lib_src_exists
;
532 Lisp_Object etc_exists
, info_exists
;
534 /* See if dir contains subdirs for use by Emacs.
535 Check for the ones that would exist in a build directory,
536 not including lisp and info. */
537 tem
= Fexpand_file_name (build_string ("lib-src"), dir
);
538 lib_src_exists
= Ffile_exists_p (tem
);
541 /* MSDOS installations frequently remove lib-src, but we still
542 must set installation-directory, or else info won't find
543 its files (it uses the value of installation-directory). */
544 tem
= Fexpand_file_name (build_string ("info"), dir
);
545 info_exists
= Ffile_exists_p (tem
);
550 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
552 tem
= Fexpand_file_name (build_string ("etc"), dir
);
553 etc_exists
= Ffile_exists_p (tem
);
554 if (!NILP (etc_exists
))
556 Vinstallation_directory
557 = Ffile_name_as_directory (dir
);
562 /* See if dir's parent contains those subdirs. */
563 tem
= Fexpand_file_name (build_string ("../lib-src"), dir
);
564 lib_src_exists
= Ffile_exists_p (tem
);
568 /* See the MSDOS commentary above. */
569 tem
= Fexpand_file_name (build_string ("../info"), dir
);
570 info_exists
= Ffile_exists_p (tem
);
575 if (!NILP (lib_src_exists
) || !NILP (info_exists
))
577 tem
= Fexpand_file_name (build_string ("../etc"), dir
);
578 etc_exists
= Ffile_exists_p (tem
);
579 if (!NILP (etc_exists
))
581 tem
= Fexpand_file_name (build_string (".."), dir
);
582 Vinstallation_directory
583 = Ffile_name_as_directory (tem
);
588 /* If the Emacs executable is actually a link,
589 next try the dir that the link points into. */
590 tem
= Ffile_symlink_p (name
);
593 name
= Fexpand_file_name (tem
, dir
);
594 dir
= Ffile_name_directory (name
);
601 Vcommand_line_args
= Qnil
;
603 for (i
= argc
- 1; i
>= 0; i
--)
605 if (i
== 0 || i
> skip_args
)
606 /* For the moment, we keep arguments as is in unibyte strings.
607 They are decoded in the function command-line after we know
608 locale-coding-system. */
610 = Fcons (make_unibyte_string (argv
[i
], strlen (argv
[i
])),
614 unbind_to (count
, Qnil
);
617 DEFUN ("invocation-name", Finvocation_name
, Sinvocation_name
, 0, 0, 0,
618 doc
: /* Return the program name that was used to run Emacs.
619 Any directory names are omitted. */)
622 return Fcopy_sequence (Vinvocation_name
);
625 DEFUN ("invocation-directory", Finvocation_directory
, Sinvocation_directory
,
627 doc
: /* Return the directory name in which the Emacs executable was located. */)
630 return Fcopy_sequence (Vinvocation_directory
);
635 #ifdef LINK_CRTL_SHARE
636 #ifdef SHARABLE_LIB_BUG
637 extern noshare
char **environ
;
638 #endif /* SHARABLE_LIB_BUG */
639 #endif /* LINK_CRTL_SHARE */
643 /* A valid but unlikely value for the TZ environment value.
644 It is OK (though a bit slower) if the user actually chooses this value. */
645 static char dump_tz
[] = "UtC0";
648 #ifndef ORDINARY_LINK
649 /* We don't include crtbegin.o and crtend.o in the link,
650 so these functions and variables might be missed.
651 Provide dummy definitions to avoid error.
652 (We don't have any real constructors or destructors.) */
654 #ifndef GCC_CTORS_IN_LIBC
655 void __do_global_ctors ()
657 void __do_global_ctors_aux ()
659 void __do_global_dtors ()
661 /* GNU/Linux has a bug in its library; avoid an error. */
663 char * __CTOR_LIST__
[2] = { (char *) (-1), 0 };
665 char * __DTOR_LIST__
[2] = { (char *) (-1), 0 };
666 #endif /* GCC_CTORS_IN_LIBC */
669 #endif /* __GNUC__ */
670 #endif /* ORDINARY_LINK */
672 /* Test whether the next argument in ARGV matches SSTR or a prefix of
673 LSTR (at least MINLEN characters). If so, then if VALPTR is non-null
674 (the argument is supposed to have a value) store in *VALPTR either
675 the next argument or the portion of this one after the equal sign.
676 ARGV is read starting at position *SKIPPTR; this index is advanced
677 by the number of arguments used.
679 Too bad we can't just use getopt for all of this, but we don't have
680 enough information to do it right. */
683 argmatch (argv
, argc
, sstr
, lstr
, minlen
, valptr
, skipptr
)
696 /* Don't access argv[argc]; give up in advance. */
697 if (argc
<= *skipptr
+ 1)
700 arg
= argv
[*skipptr
+1];
703 if (strcmp (arg
, sstr
) == 0)
707 *valptr
= argv
[*skipptr
+2];
714 arglen
= (valptr
!= NULL
&& (p
= index (arg
, '=')) != NULL
715 ? p
- arg
: strlen (arg
));
716 if (lstr
== 0 || arglen
< minlen
|| strncmp (arg
, lstr
, arglen
) != 0)
718 else if (valptr
== NULL
)
729 else if (argv
[*skipptr
+2] != NULL
)
731 *valptr
= argv
[*skipptr
+2];
741 #ifdef DOUG_LEA_MALLOC
743 /* malloc can be invoked even before main (e.g. by the dynamic
744 linker), so the dumped malloc state must be restored as early as
745 possible using this special hook. */
748 malloc_initialize_hook ()
751 extern char **environ
;
756 if (!malloc_using_checking
)
757 /* Work around a bug in glibc's malloc. MALLOC_CHECK_ must be
758 ignored if the heap to be restored was constructed without
759 malloc checking. Can't use unsetenv, since that calls malloc. */
763 for (p
= environ
; p
&& *p
; p
++)
764 if (strncmp (*p
, "MALLOC_CHECK_=", 14) == 0)
773 malloc_set_state (malloc_state_ptr
);
774 #ifndef XMALLOC_OVERRUN_CHECK
775 free (malloc_state_ptr
);
780 if (my_heap_start
== 0)
781 my_heap_start
= sbrk (0);
782 malloc_using_checking
= getenv ("MALLOC_CHECK_") != NULL
;
786 void (*__malloc_initialize_hook
) () = malloc_initialize_hook
;
788 #endif /* DOUG_LEA_MALLOC */
791 #define REPORT_EMACS_BUG_ADDRESS "bug-gnu-emacs@gnu.org"
792 #define REPORT_EMACS_BUG_PRETEST_ADDRESS "multi-tty@lists.fnord.hu"
794 /* This function is used to determine an address to which bug report should
798 bug_reporting_address ()
804 temp
= Fsymbol_value (intern ("emacs-version"));
806 /* When `emacs-version' is invalid, use normal address. */
808 return REPORT_EMACS_BUG_ADDRESS
;
810 string
= SDATA (temp
);
812 /* Count dots in `emacs-version'. */
820 /* When `emacs-version' has at least three dots, it is development or
821 pretest version of Emacs. */
822 return count
>= 3 ? REPORT_EMACS_BUG_PRETEST_ADDRESS
: REPORT_EMACS_BUG_ADDRESS
;
842 char stack_bottom_variable
;
843 int do_initial_setlocale
;
848 #ifdef HAVE_SETRLIMIT
855 extern Lisp_Object
*stack_base
;
861 extern char my_endbss
[];
862 extern char *my_endbss_static
;
864 if (my_heap_start
== 0)
865 my_heap_start
= sbrk (0);
867 heap_bss_diff
= (char *)my_heap_start
- max (my_endbss
, my_endbss_static
);
870 #ifdef LINUX_SBRK_BUG
874 #ifdef RUN_TIME_REMAP
876 run_time_remap (argv
[0]);
881 unexec_init_emacs_zone ();
884 sort_args (argc
, argv
);
886 while (argv
[argc
]) argc
++;
888 if (argmatch (argv
, argc
, "-version", "--version", 3, NULL
, &skip_args
)
889 /* We don't know the version number unless this is a dumped Emacs.
890 So ignore --version otherwise. */
894 tem
= Fsymbol_value (intern ("emacs-version"));
897 fprintf (stderr
, "Invalid value of `emacs-version'\n");
902 printf ("GNU Emacs %s\n", SDATA (tem
));
903 printf ("Copyright (C) 2006 Free Software Foundation, Inc.\n");
904 printf ("GNU Emacs comes with ABSOLUTELY NO WARRANTY.\n");
905 printf ("You may redistribute copies of Emacs\n");
906 printf ("under the terms of the GNU General Public License.\n");
907 printf ("For more information about these matters, ");
908 printf ("see the file named COPYING.\n");
913 #ifdef HAVE_PERSONALITY_LINUX32
914 /* See if there is a gap between the end of BSS and the heap.
915 In that case, set personality and exec ourself again. */
917 && (strcmp (argv
[argc
-1], "dump") == 0
918 || strcmp (argv
[argc
-1], "bootstrap") == 0)
919 && heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
921 if (! getenv ("EMACS_HEAP_EXEC"))
923 /* Set this so we only do this once. */
924 putenv("EMACS_HEAP_EXEC=true");
926 /* A flag to turn off address randomization which is introduced
927 in linux kernel shipped with fedora core 4 */
928 #define ADD_NO_RANDOMIZE 0x0040000
929 personality (PER_LINUX32
| ADD_NO_RANDOMIZE
);
930 #undef ADD_NO_RANDOMIZE
932 execvp (argv
[0], argv
);
934 /* If the exec fails, try to dump anyway. */
938 #endif /* HAVE_PERSONALITY_LINUX32 */
941 /* Map in shared memory, if we are using that. */
943 if (argmatch (argv
, argc
, "-nl", "--no-shared-memory", 6, NULL
, &skip_args
))
946 /* The shared memory was just restored, which clobbered this. */
952 /* The shared memory was just restored, which clobbered this. */
959 extern int malloc_cookie
;
960 /* This helps out unexnext.c. */
962 if (malloc_jumpstart (malloc_cookie
) != 0)
963 printf ("malloc jumpstart failed!\n");
968 /* Skip process serial number passed in the form -psn_x_y as
969 command-line argument. The WindowServer adds this option when
970 Emacs is invoked from the Finder or by the `open' command. In
971 these cases, the working directory becomes `/', so we change it
972 to the user's home directory. */
973 if (argc
> skip_args
+ 1 && strncmp (argv
[skip_args
+1], "-psn_", 5) == 0)
975 chdir (getenv ("HOME"));
981 /* If -map specified, map the data file in. */
984 if (argmatch (argv
, argc
, "-map", "--map-data", 3, &file
, &skip_args
))
988 #ifdef LINK_CRTL_SHARE
989 #ifdef SHARABLE_LIB_BUG
990 /* Bletcherous shared libraries! */
992 stdin
= fdopen (0, "r");
994 stdout
= fdopen (1, "w");
996 stderr
= fdopen (2, "w");
999 #endif /* SHARABLE_LIB_BUG */
1000 #endif /* LINK_CRTL_SHARE */
1003 #if defined (HAVE_SETRLIMIT) && defined (RLIMIT_STACK)
1004 /* Extend the stack space available.
1005 Don't do that if dumping, since some systems (e.g. DJGPP)
1006 might define a smaller stack limit at that time. */
1009 && (!noninteractive
|| initialized
)
1011 && !getrlimit (RLIMIT_STACK
, &rlim
))
1014 extern size_t re_max_failures
;
1015 /* Approximate the amount regex.c needs per unit of re_max_failures. */
1016 int ratio
= 20 * sizeof (char *);
1017 /* Then add 33% to cover the size of the smaller stacks that regex.c
1018 successively allocates and discards, on its way to the maximum. */
1020 /* Add in some extra to cover
1021 what we're likely to use for other reasons. */
1022 newlim
= re_max_failures
* ratio
+ 200000;
1024 /* NetBSD (at least NetBSD 1.2G and former) has a bug in its
1025 stack allocation routine for new process that the allocation
1026 fails if stack limit is not on page boundary. So, round up the
1027 new limit to page boundary. */
1028 newlim
= (newlim
+ getpagesize () - 1) / getpagesize () * getpagesize();
1030 if (newlim
> rlim
.rlim_max
)
1032 newlim
= rlim
.rlim_max
;
1033 /* Don't let regex.c overflow the stack we have. */
1034 re_max_failures
= (newlim
- 200000) / ratio
;
1036 if (rlim
.rlim_cur
< newlim
)
1037 rlim
.rlim_cur
= newlim
;
1039 setrlimit (RLIMIT_STACK
, &rlim
);
1041 #endif /* HAVE_SETRLIMIT and RLIMIT_STACK */
1043 /* Record (approximately) where the stack begins. */
1044 stack_bottom
= &stack_bottom_variable
;
1046 #ifdef USG_SHARED_LIBRARIES
1048 brk ((void *)bss_end
);
1053 #ifndef SYSTEM_MALLOC
1054 /* Arrange to get warning messages as memory fills up. */
1055 memory_warnings (0, malloc_warning
);
1057 /* Call malloc at least once, to run the initial __malloc_hook.
1058 Also call realloc and free for consistency. */
1059 free (realloc (malloc (4), 4));
1062 /* Arrange to disable interrupt input inside malloc etc. */
1063 uninterrupt_malloc ();
1064 # endif /* not SYNC_INPUT */
1065 #endif /* not SYSTEM_MALLOC */
1067 #ifdef HAVE_GTK_AND_PTHREAD
1068 main_thread
= pthread_self ();
1069 #endif /* HAVE_GTK_AND_PTHREAD */
1071 #if defined (MSDOS) || defined (WINDOWSNT)
1072 /* We do all file input/output as binary files. When we need to translate
1073 newlines, we do that manually. */
1075 #endif /* MSDOS || WINDOWSNT */
1079 if (!isatty (fileno (stdin
)))
1080 setmode (fileno (stdin
), O_BINARY
);
1081 if (!isatty (fileno (stdout
)))
1084 setmode (fileno (stdout
), O_BINARY
);
1086 #else /* not __DJGPP__ >= 2 */
1087 (stdin
)->_flag
&= ~_IOTEXT
;
1088 (stdout
)->_flag
&= ~_IOTEXT
;
1089 (stderr
)->_flag
&= ~_IOTEXT
;
1090 #endif /* not __DJGPP__ >= 2 */
1093 #ifdef SET_EMACS_PRIORITY
1095 nice (emacs_priority
);
1097 #endif /* SET_EMACS_PRIORITY */
1099 /* Skip initial setlocale if LC_ALL is "C", as it's not needed in that case.
1100 The build procedure uses this while dumping, to ensure that the
1101 dumped Emacs does not have its system locale tables initialized,
1102 as that might cause screwups when the dumped Emacs starts up. */
1104 char *lc_all
= getenv ("LC_ALL");
1105 do_initial_setlocale
= ! lc_all
|| strcmp (lc_all
, "C");
1108 /* Set locale now, so that initial error messages are localized properly.
1109 fixup_locale must wait until later, since it builds strings. */
1110 if (do_initial_setlocale
)
1111 setlocale (LC_ALL
, "");
1113 #ifdef EXTRA_INITIALIZE
1117 inhibit_window_system
= 0;
1119 /* Handle the -t switch, which specifies filename to use as terminal. */
1123 if (argmatch (argv
, argc
, "-t", "--terminal", 4, &term
, &skip_args
))
1128 result
= emacs_open (term
, O_RDWR
, 0);
1131 char *errstring
= strerror (errno
);
1132 fprintf (stderr
, "%s: %s: %s\n", argv
[0], term
, errstring
);
1138 fprintf (stderr
, "%s: %s: not a tty\n", argv
[0], term
);
1141 fprintf (stderr
, "Using %s\n", term
);
1142 #ifdef HAVE_WINDOW_SYSTEM
1143 inhibit_window_system
= 1; /* -t => -nw */
1150 /* Command line option --no-windows is deprecated and thus not mentioned
1151 in the manual and usage informations. */
1152 if (argmatch (argv
, argc
, "-nw", "--no-window-system", 6, NULL
, &skip_args
)
1153 || argmatch (argv
, argc
, "-nw", "--no-windows", 6, NULL
, &skip_args
))
1154 inhibit_window_system
= 1;
1156 /* Handle the -batch switch, which means don't do interactive display. */
1158 if (argmatch (argv
, argc
, "-batch", "--batch", 5, NULL
, &skip_args
))
1161 Vundo_outer_limit
= Qnil
;
1163 if (argmatch (argv
, argc
, "-script", "--script", 3, &junk
, &skip_args
))
1165 noninteractive
= 1; /* Set batch mode. */
1166 /* Convert --script to --scriptload, un-skip it, and sort again
1167 so that it will be handled in proper sequence. */
1168 argv
[skip_args
- 1] = "-scriptload";
1170 sort_args (argc
, argv
);
1173 /* Handle the --help option, which gives a usage message. */
1174 if (argmatch (argv
, argc
, "-help", "--help", 3, NULL
, &skip_args
))
1176 printf (USAGE1
, argv
[0], USAGE2
);
1178 printf (USAGE4
, bug_reporting_address ());
1182 if (! noninteractive
)
1187 inherited_pgroup
= EMACS_GETPGRP (0);
1188 setpgrp (0, getpid ());
1191 #if defined (USG5) && defined (INTERRUPT_INPUT)
1199 /* Don't catch SIGHUP if dumping. */
1206 sigblock (sigmask (SIGHUP
));
1207 /* In --batch mode, don't catch SIGHUP if already ignored.
1208 That makes nohup work. */
1209 if (! noninteractive
1210 || signal (SIGHUP
, SIG_IGN
) != SIG_IGN
)
1211 signal (SIGHUP
, fatal_error_signal
);
1212 sigunblock (sigmask (SIGHUP
));
1217 ! noninteractive
|| initialized
1223 /* Don't catch these signals in batch mode if dumping.
1224 On some machines, this sets static data that would make
1225 signal fail to work right when the dumped Emacs is run. */
1226 signal (SIGQUIT
, fatal_error_signal
);
1227 signal (SIGILL
, fatal_error_signal
);
1228 signal (SIGTRAP
, fatal_error_signal
);
1230 signal (SIGUSR1
, handle_USR1_signal
);
1232 signal (SIGUSR2
, handle_USR2_signal
);
1236 signal (SIGABRT
, fatal_error_signal
);
1239 signal (SIGHWE
, fatal_error_signal
);
1242 signal (SIGPRE
, fatal_error_signal
);
1245 signal (SIGORE
, fatal_error_signal
);
1248 signal (SIGUME
, fatal_error_signal
);
1251 signal (SIGDLK
, fatal_error_signal
);
1254 signal (SIGCPULIM
, fatal_error_signal
);
1257 /* This is missing on some systems - OS/2, for example. */
1258 signal (SIGIOT
, fatal_error_signal
);
1261 signal (SIGEMT
, fatal_error_signal
);
1263 signal (SIGFPE
, fatal_error_signal
);
1265 signal (SIGBUS
, fatal_error_signal
);
1267 signal (SIGSEGV
, fatal_error_signal
);
1269 signal (SIGSYS
, fatal_error_signal
);
1271 signal (SIGTERM
, fatal_error_signal
);
1273 signal (SIGXCPU
, fatal_error_signal
);
1276 signal (SIGXFSZ
, fatal_error_signal
);
1277 #endif /* SIGXFSZ */
1280 /* This just means available memory is getting low. */
1281 signal (SIGDANGER
, memory_warning_signal
);
1285 /* 20 is SIGCHLD, 21 is SIGTTIN, 22 is SIGTTOU. */
1286 signal (SIGXCPU
, fatal_error_signal
);
1288 signal (SIGIOINT
, fatal_error_signal
);
1290 signal (SIGGRANT
, fatal_error_signal
);
1291 signal (SIGRETRACT
, fatal_error_signal
);
1292 signal (SIGSOUND
, fatal_error_signal
);
1293 signal (SIGMSG
, fatal_error_signal
);
1297 noninteractive1
= noninteractive
;
1299 /* Perform basic initializations (not merely interning symbols). */
1306 init_charset_once ();
1307 init_coding_once ();
1308 init_syntax_once (); /* Create standard syntax table. */
1309 init_category_once (); /* Create standard category table. */
1310 /* Must be done before init_buffer. */
1311 init_casetab_once ();
1312 init_buffer_once (); /* Create buffer table and some buffers. */
1313 init_minibuf_once (); /* Create list of minibuffers. */
1314 /* Must precede init_window_once. */
1316 /* Call syms_of_xfaces before init_window_once because that
1317 function creates Vterminal_frame. Termcap frames now use
1318 faces, and the face implementation uses some symbols as
1321 /* XXX syms_of_keyboard uses some symbols in keymap.c. It would
1322 be better to arrange things not to have this dependency. */
1324 /* Call syms_of_keyboard before init_window_once because
1325 keyboard sets up symbols that include some face names that
1326 the X support will want to use. This can happen when
1327 CANNOT_DUMP is defined. */
1328 syms_of_keyboard ();
1331 /* init_window_once calls make_terminal_frame which on Mac OS
1332 creates a full-fledge output_mac type frame. This does not
1333 work correctly before syms_of_textprop, syms_of_macfns,
1334 syms_of_ccl, syms_of_fontset, syms_of_xterm, syms_of_search,
1335 syms_of_frame, mac_term_init, and init_keyboard have already
1337 syms_of_textprop ();
1343 syms_of_macselect ();
1349 mac_term_init (build_string ("Mac"), NULL
, NULL
);
1353 init_window_once (); /* Init the window system. */
1354 init_fileio_once (); /* Must precede any path manipulation. */
1355 #ifdef HAVE_WINDOW_SYSTEM
1356 init_fringe_once (); /* Swap bitmaps if necessary. */
1357 #endif /* HAVE_WINDOW_SYSTEM */
1362 if (do_initial_setlocale
)
1365 Vsystem_messages_locale
= Vprevious_system_messages_locale
;
1366 Vsystem_time_locale
= Vprevious_system_time_locale
;
1371 #ifdef CLASH_DETECTION
1377 running_asynch_code
= 0;
1379 /* Handle --unibyte and the EMACS_UNIBYTE envvar,
1380 but not while dumping. */
1383 int inhibit_unibyte
= 0;
1385 /* --multibyte overrides EMACS_UNIBYTE. */
1386 if (argmatch (argv
, argc
, "-no-unibyte", "--no-unibyte", 4, NULL
, &skip_args
)
1387 || argmatch (argv
, argc
, "-multibyte", "--multibyte", 4, NULL
, &skip_args
)
1388 /* Ignore EMACS_UNIBYTE before dumping. */
1389 || (!initialized
&& noninteractive
))
1390 inhibit_unibyte
= 1;
1392 /* --unibyte requests that we set up to do everything with single-byte
1393 buffers and strings. We need to handle this before calling
1394 init_lread, init_editfns and other places that generate Lisp strings
1395 from text in the environment. */
1396 /* Actually this shouldn't be needed as of 20.4 in a generally
1397 unibyte environment. As handa says, environment values
1398 aren't now decoded; also existing buffers are now made
1399 unibyte during startup if .emacs sets unibyte. Tested with
1400 8-bit data in environment variables and /etc/passwd, setting
1401 unibyte and Latin-1 in .emacs. -- Dave Love */
1402 if (argmatch (argv
, argc
, "-unibyte", "--unibyte", 4, NULL
, &skip_args
)
1403 || argmatch (argv
, argc
, "-no-multibyte", "--no-multibyte", 4, NULL
, &skip_args
)
1404 || (getenv ("EMACS_UNIBYTE") && !inhibit_unibyte
))
1406 Lisp_Object old_log_max
;
1407 Lisp_Object symbol
, tail
;
1409 symbol
= intern ("default-enable-multibyte-characters");
1410 Fset (symbol
, Qnil
);
1414 /* Erase pre-dump messages in *Messages* now so no abort. */
1415 old_log_max
= Vmessage_log_max
;
1416 XSETFASTINT (Vmessage_log_max
, 0);
1417 message_dolog ("", 0, 1, 0);
1418 Vmessage_log_max
= old_log_max
;
1421 for (tail
= Vbuffer_alist
; CONSP (tail
);
1426 buffer
= Fcdr (XCAR (tail
));
1427 /* Verify that all buffers are empty now, as they
1429 if (BUF_Z (XBUFFER (buffer
)) > BUF_BEG (XBUFFER (buffer
)))
1431 /* It is safe to do this crudely in an empty buffer. */
1432 XBUFFER (buffer
)->enable_multibyte_characters
= Qnil
;
1438 = argmatch (argv
, argc
, "-nl", "--no-loadup", 6, NULL
, &skip_args
);
1441 #ifdef HAVE_X_WINDOWS
1442 /* Stupid kludge to catch command-line display spec. We can't
1443 handle this argument entirely in window system dependent code
1444 because we don't even know which window system dependent code
1445 to run until we've recognized this argument. */
1447 char *displayname
= 0;
1448 int count_before
= skip_args
;
1450 /* Skip any number of -d options, but only use the last one. */
1453 int count_before_this
= skip_args
;
1455 if (argmatch (argv
, argc
, "-d", "--display", 3, &displayname
, &skip_args
))
1457 else if (argmatch (argv
, argc
, "-display", 0, 3, &displayname
, &skip_args
))
1462 count_before
= count_before_this
;
1465 /* If we have the form --display=NAME,
1466 convert it into -d name.
1467 This requires inserting a new element into argv. */
1468 if (displayname
!= 0 && skip_args
- count_before
== 1)
1470 char **new = (char **) xmalloc (sizeof (char *) * (argc
+ 2));
1473 for (j
= 0; j
< count_before
+ 1; j
++)
1475 new[count_before
+ 1] = "-d";
1476 new[count_before
+ 2] = displayname
;
1477 for (j
= count_before
+ 2; j
<argc
; j
++)
1478 new[j
+ 1] = argv
[j
];
1482 /* Change --display to -d, when its arg is separate. */
1483 else if (displayname
!= 0 && skip_args
> count_before
1484 && argv
[count_before
+ 1][1] == '-')
1485 argv
[count_before
+ 1] = "-d";
1487 /* Don't actually discard this arg. */
1488 skip_args
= count_before
;
1492 /* argmatch must not be used after here,
1493 except when bulding temacs
1494 because the -d argument has not been skipped in skip_args. */
1497 /* Call early 'cause init_environment needs it. */
1499 /* Set defaults for several environment variables. */
1501 init_environment (argc
, argv
, skip_args
);
1508 /* Initialize environment from registry settings. */
1509 init_environment (argv
);
1510 init_ntproc (); /* must precede init_editfns. */
1513 #if defined (MAC_OSX) && defined (HAVE_CARBON)
1515 init_mac_osx_environment ();
1518 /* egetenv is a pretty low-level facility, which may get called in
1519 many circumstances; it seems flimsy to put off initializing it
1520 until calling init_callproc. */
1521 set_initial_environment ();
1522 /* AIX crashes are reported in system versions 3.2.3 and 3.2.4
1523 if this is not done. Do it after set_global_environment so that we
1524 don't pollute Vglobal_environment. */
1525 /* Setting LANG here will defeat the startup locale processing... */
1530 init_buffer (); /* Init default directory of main buffer. */
1532 init_callproc_1 (); /* Must precede init_cmdargs and init_sys_modes. */
1533 init_cmdargs (argc
, argv
, skip_args
); /* Must precede init_lread. */
1537 /* Erase any pre-dump messages in the message log, to avoid confusion. */
1538 Lisp_Object old_log_max
;
1539 old_log_max
= Vmessage_log_max
;
1540 XSETFASTINT (Vmessage_log_max
, 0);
1541 message_dolog ("", 0, 1, 0);
1542 Vmessage_log_max
= old_log_max
;
1545 init_callproc (); /* Must follow init_cmdargs but not init_sys_modes. */
1548 /* Intern the names of all standard functions and variables;
1549 define standard keys. */
1553 /* The basic levels of Lisp must come first. */
1554 /* And data must come first of all
1555 for the sake of symbols like error-message. */
1557 /* Called before init_window_once for Mac OS Classic. */
1565 syms_of_floatfns ();
1569 syms_of_bytecode ();
1571 syms_of_casefiddle ();
1573 syms_of_callproc ();
1574 syms_of_category ();
1576 /* Called before init_window_once for Mac OS Classic. */
1581 #ifndef NO_DIR_LIBRARY
1583 #endif /* not NO_DIR_LIBRARY */
1589 syms_of_coding (); /* This should be after syms_of_fileio. */
1590 #ifdef CLASH_DETECTION
1591 syms_of_filelock ();
1592 #endif /* CLASH_DETECTION */
1595 /* syms_of_keymap (); */
1601 /* Called before init_window_once for Mac OS Classic. */
1606 syms_of_terminal ();
1613 /* Called before init_window_once for Mac OS Classic. */
1614 syms_of_textprop ();
1616 syms_of_composite ();
1622 #endif /* WINDOWSNT */
1625 #ifdef HAVE_WINDOW_SYSTEM
1628 #endif /* HAVE_WINDOW_SYSTEM */
1629 #ifdef HAVE_X_WINDOWS
1639 #endif /* HAVE_X_WINDOWS */
1643 /* Called before init_window_once for Mac OS Classic. */
1651 syms_of_w32select ();
1654 #endif /* HAVE_NTGUI */
1656 #if defined (MAC_OSX) && defined (HAVE_CARBON)
1660 syms_of_macselect ();
1662 #endif /* MAC_OSX && HAVE_CARBON */
1672 keys_of_casefiddle ();
1675 keys_of_keyboard ();
1682 /* Initialization that must be done even if the global variable
1683 initialized is non zero. */
1685 globals_of_w32fns ();
1686 globals_of_w32menu ();
1687 globals_of_w32select ();
1688 #endif /* HAVE_NTGUI */
1691 init_process (); /* init_display uses add_keyboard_wait_descriptor. */
1693 /* Called before init_window_once for Mac OS Classic. */
1694 init_keyboard (); /* This too must precede init_sys_modes. */
1697 init_vmsproc (); /* And this too. */
1699 if (!noninteractive
)
1702 init_vms_input ();/* init_display calls get_tty_size, that needs this. */
1704 init_display (); /* Determine terminal type. Calls init_sys_modes. */
1708 #ifdef HAVE_WINDOW_SYSTEM
1711 #endif /* HAVE_WINDOW_SYSTEM */
1726 /* Handle -l loadup, args passed by Makefile. */
1727 if (argmatch (argv
, argc
, "-l", "--load", 3, &file
, &skip_args
))
1728 Vtop_level
= Fcons (intern ("load"),
1729 Fcons (build_string (file
), Qnil
));
1730 /* Unless next switch is -nl, load "loadup.el" first thing. */
1732 Vtop_level
= Fcons (intern ("load"),
1733 Fcons (build_string ("loadup.el"), Qnil
));
1740 /* If the execution TZ happens to be the same as the dump TZ,
1741 change it to some other value and then change it back,
1742 to force the underlying implementation to reload the TZ info.
1743 This is needed on implementations that load TZ info from files,
1744 since the TZ file contents may differ between dump and execution. */
1745 char *tz
= getenv ("TZ");
1746 if (tz
&& !strcmp (tz
, dump_tz
))
1756 /* Set up for profiling. This is known to work on FreeBSD,
1757 GNU/Linux and MinGW. It might work on some other systems too.
1758 Give it a try and tell us if it works on your system. To compile
1759 for profiling use something like:
1760 `make CFLAGS="-pg -g -O -DPROFILING=1'. */
1761 #if defined (__FreeBSD__) || defined (GNU_LINUX) || defined(__MINGW32__)
1765 extern void _mcleanup ();
1767 extern unsigned char etext
asm ("etext");
1771 extern void safe_bcopy ();
1772 extern void dump_opcode_frequencies ();
1775 /* This uses safe_bcopy because that function comes first in the
1776 Emacs executable. It might be better to use something that
1777 gives the start of the text segment, but start_of_text is not
1778 defined on all systems now. */
1779 monstartup (safe_bcopy
, &etext
);
1788 #ifdef LOCALTIME_CACHE
1789 /* Some versions of localtime have a bug. They cache the value of the time
1790 zone rather than looking it up every time. Since localtime() is
1791 called to bolt the undumping time into the undumped emacs, this
1792 results in localtime ignoring the TZ environment variable.
1793 This flushes the new TZ value into localtime. */
1795 #endif /* defined (LOCALTIME_CACHE) */
1797 /* Enter editor command loop. This never returns. */
1803 /* Sort the args so we can find the most important ones
1804 at the beginning of argv. */
1806 /* First, here's a table of all the standard options. */
1808 struct standard_args
1816 struct standard_args standard_args
[] =
1818 { "-version", "--version", 150, 0 },
1820 { "-nl", "--no-shared-memory", 140, 0 },
1823 { "-map", "--map-data", 130, 0 },
1825 { "-t", "--terminal", 120, 1 },
1826 { "-nw", "--no-window-system", 110, 0 },
1827 { "-nw", "--no-windows", 110, 0 },
1828 { "-batch", "--batch", 100, 0 },
1829 { "-script", "--script", 100, 1 },
1830 { "-help", "--help", 90, 0 },
1831 { "-no-unibyte", "--no-unibyte", 83, 0 },
1832 { "-multibyte", "--multibyte", 82, 0 },
1833 { "-unibyte", "--unibyte", 81, 0 },
1834 { "-no-multibyte", "--no-multibyte", 80, 0 },
1835 { "-nl", "--no-loadup", 70, 0 },
1836 /* -d must come last before the options handled in startup.el. */
1837 { "-d", "--display", 60, 1 },
1838 { "-display", 0, 60, 1 },
1839 /* Now for the options handled in startup.el. */
1840 { "-Q", "--quick", 55, 0 },
1841 { "-quick", 0, 55, 0 },
1842 { "-q", "--no-init-file", 50, 0 },
1843 { "-no-init-file", 0, 50, 0 },
1844 { "-no-site-file", "--no-site-file", 40, 0 },
1845 { "-no-splash", "--no-splash", 40, 0 },
1846 { "-u", "--user", 30, 1 },
1847 { "-user", 0, 30, 1 },
1848 { "-debug-init", "--debug-init", 20, 0 },
1849 { "-nbi", "--no-bitmap-icon", 15, 0 },
1850 { "-iconic", "--iconic", 15, 0 },
1851 { "-D", "--basic-display", 12, 0},
1852 { "-basic-display", 0, 12, 0},
1853 { "-bg", "--background-color", 10, 1 },
1854 { "-background", 0, 10, 1 },
1855 { "-fg", "--foreground-color", 10, 1 },
1856 { "-foreground", 0, 10, 1 },
1857 { "-bd", "--border-color", 10, 1 },
1858 { "-bw", "--border-width", 10, 1 },
1859 { "-ib", "--internal-border", 10, 1 },
1860 { "-ms", "--mouse-color", 10, 1 },
1861 { "-cr", "--cursor-color", 10, 1 },
1862 { "-nbc", "--no-blinking-cursor", 10, 0 },
1863 { "-fn", "--font", 10, 1 },
1864 { "-font", 0, 10, 1 },
1865 { "-fs", "--fullscreen", 10, 0 },
1866 { "-fw", "--fullwidth", 10, 0 },
1867 { "-fh", "--fullheight", 10, 0 },
1868 { "-g", "--geometry", 10, 1 },
1869 { "-geometry", 0, 10, 1 },
1870 { "-T", "--title", 10, 1 },
1871 { "-title", 0, 10, 1 },
1872 { "-name", "--name", 10, 1 },
1873 { "-xrm", "--xrm", 10, 1 },
1874 { "-r", "--reverse-video", 5, 0 },
1876 { "-reverse", 0, 5, 0 },
1877 { "-hb", "--horizontal-scroll-bars", 5, 0 },
1878 { "-vb", "--vertical-scroll-bars", 5, 0 },
1879 { "-color", "--color", 5, 0},
1880 /* These have the same priority as ordinary file name args,
1881 so they are not reordered with respect to those. */
1882 { "-L", "--directory", 0, 1 },
1883 { "-directory", 0, 0, 1 },
1884 { "-l", "--load", 0, 1 },
1885 { "-load", 0, 0, 1 },
1886 { "-scriptload", "--scriptload", 0, 1 },
1887 { "-f", "--funcall", 0, 1 },
1888 { "-funcall", 0, 0, 1 },
1889 { "-eval", "--eval", 0, 1 },
1890 { "-execute", "--execute", 0, 1 },
1891 { "-find-file", "--find-file", 0, 1 },
1892 { "-visit", "--visit", 0, 1 },
1893 { "-file", "--file", 0, 1 },
1894 { "-insert", "--insert", 0, 1 },
1895 /* This should be processed after ordinary file name args and the like. */
1896 { "-kill", "--kill", -10, 0 },
1899 /* Reorder the elements of ARGV (assumed to have ARGC elements)
1900 so that the highest priority ones come first.
1901 Do not change the order of elements of equal priority.
1902 If an option takes an argument, keep it and its argument together.
1904 If an option that takes no argument appears more
1905 than once, eliminate all but one copy of it. */
1908 sort_args (argc
, argv
)
1912 char **new = (char **) xmalloc (sizeof (char *) * argc
);
1913 /* For each element of argv,
1914 the corresponding element of options is:
1915 0 for an option that takes no arguments,
1916 1 for an option that takes one argument, etc.
1917 -1 for an ordinary non-option argument. */
1918 int *options
= (int *) xmalloc (sizeof (int) * argc
);
1919 int *priority
= (int *) xmalloc (sizeof (int) * argc
);
1921 int incoming_used
= 1;
1925 /* Categorize all the options,
1926 and figure out which argv elts are option arguments. */
1927 for (from
= 1; from
< argc
; from
++)
1931 if (argv
[from
][0] == '-')
1936 /* If we have found "--", don't consider
1937 any more arguments as options. */
1938 if (argv
[from
][1] == '-' && argv
[from
][2] == 0)
1940 /* Leave the "--", and everything following it, at the end. */
1941 for (; from
< argc
; from
++)
1943 priority
[from
] = -100;
1949 /* Look for a match with a known old-fashioned option. */
1950 for (i
= 0; i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1951 if (!strcmp (argv
[from
], standard_args
[i
].name
))
1953 options
[from
] = standard_args
[i
].nargs
;
1954 priority
[from
] = standard_args
[i
].priority
;
1955 if (from
+ standard_args
[i
].nargs
>= argc
)
1956 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1957 from
+= standard_args
[i
].nargs
;
1961 /* Look for a match with a known long option.
1962 MATCH is -1 if no match so far, -2 if two or more matches so far,
1963 >= 0 (the table index of the match) if just one match so far. */
1964 if (argv
[from
][1] == '-')
1967 thislen
= strlen (argv
[from
]);
1968 equals
= index (argv
[from
], '=');
1970 thislen
= equals
- argv
[from
];
1973 i
< sizeof (standard_args
) / sizeof (standard_args
[0]); i
++)
1974 if (standard_args
[i
].longname
1975 && !strncmp (argv
[from
], standard_args
[i
].longname
,
1984 /* If we found exactly one match, use that. */
1987 options
[from
] = standard_args
[match
].nargs
;
1988 priority
[from
] = standard_args
[match
].priority
;
1989 /* If --OPTION=VALUE syntax is used,
1990 this option uses just one argv element. */
1993 if (from
+ options
[from
] >= argc
)
1994 fatal ("Option `%s' requires an argument\n", argv
[from
]);
1995 from
+= options
[from
];
2002 /* Copy the arguments, in order of decreasing priority, to NEW. */
2004 while (incoming_used
< argc
)
2007 int best_priority
= -9999;
2009 /* Find the highest priority remaining option.
2010 If several have equal priority, take the first of them. */
2011 for (from
= 1; from
< argc
; from
++)
2013 if (argv
[from
] != 0 && priority
[from
] > best_priority
)
2015 best_priority
= priority
[from
];
2018 /* Skip option arguments--they are tied to the options. */
2019 if (options
[from
] > 0)
2020 from
+= options
[from
];
2026 /* Copy the highest priority remaining option, with its args, to NEW.
2027 Unless it is a duplicate of the previous one. */
2028 if (! (options
[best
] == 0
2029 && ! strcmp (new[to
- 1], argv
[best
])))
2031 new[to
++] = argv
[best
];
2032 for (i
= 0; i
< options
[best
]; i
++)
2033 new[to
++] = argv
[best
+ i
+ 1];
2036 incoming_used
+= 1 + (options
[best
] > 0 ? options
[best
] : 0);
2038 /* Clear out this option in ARGV. */
2040 for (i
= 0; i
< options
[best
]; i
++)
2041 argv
[best
+ i
+ 1] = 0;
2044 /* If duplicate options were deleted, fill up extra space with null ptrs. */
2048 bcopy (new, argv
, sizeof (char *) * argc
);
2055 DEFUN ("kill-emacs", Fkill_emacs
, Skill_emacs
, 0, 1, "P",
2056 doc
: /* Exit the Emacs job and kill it.
2057 If ARG is an integer, return ARG as the exit program code.
2058 If ARG is a string, stuff it as keyboard input.
2060 The value of `kill-emacs-hook', if not void,
2061 is a list of functions (of no args),
2062 all of which are called before Emacs is actually killed. */)
2066 struct gcpro gcpro1
;
2073 if (!NILP (Vrun_hooks
) && !noninteractive
)
2074 call1 (Vrun_hooks
, intern ("kill-emacs-hook"));
2078 /* Is it really necessary to do this deassign
2079 when we are going to exit anyway? */
2084 shut_down_emacs (0, 0, STRINGP (arg
) ? arg
: Qnil
);
2086 /* If we have an auto-save list file,
2087 kill it because we are exiting Emacs deliberately (not crashing).
2088 Do it after shut_down_emacs, which does an auto-save. */
2089 if (STRINGP (Vauto_save_list_file_name
))
2090 unlink (SDATA (Vauto_save_list_file_name
));
2092 exit (INTEGERP (arg
) ? XINT (arg
) : EXIT_SUCCESS
);
2098 /* Perform an orderly shutdown of Emacs. Autosave any modified
2099 buffers, kill any child processes, clean up the terminal modes (if
2100 we're in the foreground), and other stuff like that. Don't perform
2101 any redisplay; this may be called when Emacs is shutting down in
2102 the background, or after its X connection has died.
2104 If SIG is a signal number, print a message for it.
2106 This is called by fatal signal handlers, X protocol error handlers,
2110 shut_down_emacs (sig
, no_x
, stuff
)
2114 /* Prevent running of hooks from now on. */
2117 /* Don't update display from now on. */
2118 Vinhibit_redisplay
= Qt
;
2120 /* If we are controlling the terminal, reset terminal modes. */
2121 #ifdef EMACS_HAVE_TTY_PGRP
2123 int pgrp
= EMACS_GETPGRP (0);
2126 if (EMACS_GET_TTY_PGRP (0, &tpgrp
) != -1
2129 reset_all_sys_modes ();
2130 if (sig
&& sig
!= SIGTERM
)
2131 fprintf (stderr
, "Fatal error (%d)", sig
);
2136 reset_all_sys_modes ();
2139 stuff_buffered_input (stuff
);
2142 inhibit_sentinels
= 1;
2144 kill_buffer_processes (Qnil
);
2145 Fdo_auto_save (Qt
, Qnil
);
2147 #ifdef CLASH_DETECTION
2148 unlock_all_files ();
2152 kill_vms_processes ();
2155 #if 0 /* This triggers a bug in XCloseDisplay and is not needed. */
2156 #ifdef HAVE_X_WINDOWS
2157 /* It's not safe to call intern here. Maybe we are crashing. */
2158 if (!noninteractive
&& SYMBOLP (Vinitial_window_system
)
2159 && SCHARS (SYMBOL_NAME (Vinitial_window_system
)) == 1
2160 && SREF (SYMBOL_NAME (Vinitial_window_system
), 0) == 'x'
2162 Fx_close_current_connection ();
2163 #endif /* HAVE_X_WINDOWS */
2167 /* There is a tendency for a SIGIO signal to arrive within exit,
2168 and cause a SIGHUP because the input descriptor is already closed. */
2170 signal (SIGIO
, SIG_IGN
);
2177 /* Do this only if terminating normally, we want glyph matrices
2178 etc. in a core dump. */
2179 if (sig
== 0 || sig
== SIGTERM
)
2181 check_glyph_memory ();
2182 check_message_stack ();
2196 DEFUN ("dump-emacs-data", Fdump_emacs_data
, Sdump_emacs_data
, 1, 1, 0,
2197 doc
: /* Dump current state of Emacs into data file FILENAME.
2198 This function exists on systems that use HAVE_SHM. */)
2200 Lisp_Object filename
;
2202 extern char my_edata
[];
2206 CHECK_STRING (filename
);
2207 filename
= Fexpand_file_name (filename
, Qnil
);
2210 Vpurify_flag
= Qnil
;
2213 /* Tell malloc where start of impure now is. */
2214 /* Also arrange for warnings when nearly out of space. */
2215 #ifndef SYSTEM_MALLOC
2216 memory_warnings (my_edata
, malloc_warning
);
2218 map_out_data (SDATA (filename
));
2225 #else /* not HAVE_SHM */
2227 DEFUN ("dump-emacs", Fdump_emacs
, Sdump_emacs
, 2, 2, 0,
2228 doc
: /* Dump current state of Emacs into executable file FILENAME.
2229 Take symbols from SYMFILE (presumably the file you executed to run Emacs).
2230 This is used in the file `loadup.el' when building Emacs.
2232 You must run Emacs in batch mode in order to dump it. */)
2234 Lisp_Object filename
, symfile
;
2236 extern char my_edata
[];
2239 int count
= SPECPDL_INDEX ();
2243 if (! noninteractive
)
2244 error ("Dumping Emacs works only in batch mode");
2247 if (heap_bss_diff
> MAX_HEAP_BSS_DIFF
)
2249 fprintf (stderr
, "**************************************************\n");
2250 fprintf (stderr
, "Warning: Your system has a gap between BSS and the\n");
2251 fprintf (stderr
, "heap (%lu byte). This usually means that exec-shield\n",
2253 fprintf (stderr
, "or something similar is in effect. The dump may\n");
2254 fprintf (stderr
, "fail because of this. See the section about \n");
2255 fprintf (stderr
, "exec-shield in etc/PROBLEMS for more information.\n");
2256 fprintf (stderr
, "**************************************************\n");
2258 #endif /* GNU_LINUX */
2260 /* Bind `command-line-processed' to nil before dumping,
2261 so that the dumped Emacs will process its command line
2262 and set up to work with X windows if appropriate. */
2263 symbol
= intern ("command-line-processed");
2264 specbind (symbol
, Qnil
);
2266 CHECK_STRING (filename
);
2267 filename
= Fexpand_file_name (filename
, Qnil
);
2268 if (!NILP (symfile
))
2270 CHECK_STRING (symfile
);
2271 if (SCHARS (symfile
))
2272 symfile
= Fexpand_file_name (symfile
, Qnil
);
2276 Vpurify_flag
= Qnil
;
2279 set_time_zone_rule (dump_tz
);
2280 #ifndef LOCALTIME_CACHE
2281 /* Force a tz reload, since set_time_zone_rule doesn't. */
2288 mapout_data (SDATA (filename
));
2290 /* Tell malloc where start of impure now is. */
2291 /* Also arrange for warnings when nearly out of space. */
2292 #ifndef SYSTEM_MALLOC
2294 /* On Windows, this was done before dumping, and that once suffices.
2295 Meanwhile, my_edata is not valid on Windows. */
2296 memory_warnings (my_edata
, malloc_warning
);
2297 #endif /* not WINDOWSNT */
2299 #if !defined (SYSTEM_MALLOC) && defined (HAVE_GTK_AND_PTHREAD) && !defined SYNC_INPUT
2300 /* Pthread may call malloc before main, and then we will get an endless
2301 loop, because pthread_self (see alloc.c) calls malloc the first time
2302 it is called on some systems. */
2303 reset_malloc_hooks ();
2305 #ifdef DOUG_LEA_MALLOC
2306 malloc_state_ptr
= malloc_get_state ();
2309 #ifdef USE_MMAP_FOR_BUFFERS
2312 unexec (SDATA (filename
),
2313 !NILP (symfile
) ? SDATA (symfile
) : 0, my_edata
, 0, 0);
2314 #ifdef USE_MMAP_FOR_BUFFERS
2317 #ifdef DOUG_LEA_MALLOC
2318 free (malloc_state_ptr
);
2320 #endif /* not VMS */
2324 return unbind_to (count
, Qnil
);
2327 #endif /* not HAVE_SHM */
2329 #endif /* not CANNOT_DUMP */
2332 /* Recover from setlocale (LC_ALL, ""). */
2336 /* The Emacs Lisp reader needs LC_NUMERIC to be "C",
2337 so that numbers are read and printed properly for Emacs Lisp. */
2338 setlocale (LC_NUMERIC
, "C");
2341 /* Set system locale CATEGORY, with previous locale *PLOCALE, to
2344 synchronize_locale (category
, plocale
, desired_locale
)
2346 Lisp_Object
*plocale
;
2347 Lisp_Object desired_locale
;
2349 if (! EQ (*plocale
, desired_locale
))
2351 *plocale
= desired_locale
;
2352 setlocale (category
, (STRINGP (desired_locale
)
2353 ? (char *) SDATA (desired_locale
)
2358 /* Set system time locale to match Vsystem_time_locale, if possible. */
2360 synchronize_system_time_locale ()
2362 synchronize_locale (LC_TIME
, &Vprevious_system_time_locale
,
2363 Vsystem_time_locale
);
2366 /* Set system messages locale to match Vsystem_messages_locale, if
2369 synchronize_system_messages_locale ()
2372 synchronize_locale (LC_MESSAGES
, &Vprevious_system_messages_locale
,
2373 Vsystem_messages_locale
);
2376 #endif /* HAVE_SETLOCALE */
2383 decode_env_path (evarname
, defalt
)
2384 char *evarname
, *defalt
;
2386 register char *path
, *p
;
2387 Lisp_Object lpath
, element
, tem
;
2389 /* It's okay to use getenv here, because this function is only used
2390 to initialize variables when Emacs starts up, and isn't called
2393 path
= (char *) getenv (evarname
);
2399 /* Ensure values from the environment use the proper directory separator. */
2402 p
= alloca (strlen (path
) + 1);
2406 if ('/' == DIRECTORY_SEP
)
2407 dostounix_filename (path
);
2409 unixtodos_filename (path
);
2415 p
= index (path
, SEPCHAR
);
2416 if (!p
) p
= path
+ strlen (path
);
2417 element
= (p
- path
? make_string (path
, p
- path
)
2418 : build_string ("."));
2420 /* Add /: to the front of the name
2421 if it would otherwise be treated as magic. */
2422 tem
= Ffind_file_name_handler (element
, Qt
);
2424 /* However, if the handler says "I'm safe",
2425 don't bother adding /:. */
2429 prop
= Fget (tem
, intern ("safe-magic"));
2435 element
= concat2 (build_string ("/:"), element
);
2437 lpath
= Fcons (element
, lpath
);
2443 return Fnreverse (lpath
);
2449 Qfile_name_handler_alist
= intern ("file-name-handler-alist");
2450 staticpro (&Qfile_name_handler_alist
);
2454 defsubr (&Sdump_emacs_data
);
2456 defsubr (&Sdump_emacs
);
2460 defsubr (&Skill_emacs
);
2462 defsubr (&Sinvocation_name
);
2463 defsubr (&Sinvocation_directory
);
2465 DEFVAR_LISP ("command-line-args", &Vcommand_line_args
,
2466 doc
: /* Args passed by shell to Emacs, as a list of strings.
2467 Many arguments are deleted from the list as they are processed. */);
2469 DEFVAR_LISP ("system-type", &Vsystem_type
,
2470 doc
: /* Value is symbol indicating type of operating system you are using.
2472 `gnu/linux' compiled for a GNU/Linux system.
2473 `darwin' compiled for Darwin (GNU-Darwin, Mac OS X, ...).
2474 `macos' compiled for Mac OS 9.
2475 `ms-dos' compiled as an MS-DOS application.
2476 `windows-nt' compiled as a native W32 application.
2477 `cygwin' compiled using the Cygwin library.
2478 `vax-vms' or `axp-vms': compiled for a (Open)VMS system.
2479 Anything else indicates some sort of Unix system. */);
2480 Vsystem_type
= intern (SYSTEM_TYPE
);
2482 DEFVAR_LISP ("system-configuration", &Vsystem_configuration
,
2483 doc
: /* Value is string indicating configuration Emacs was built for.
2484 On MS-Windows, the value reflects the OS flavor and version on which
2485 Emacs is running. */);
2486 Vsystem_configuration
= build_string (EMACS_CONFIGURATION
);
2488 DEFVAR_LISP ("system-configuration-options", &Vsystem_configuration_options
,
2489 doc
: /* String containing the configuration options Emacs was built with. */);
2490 Vsystem_configuration_options
= build_string (EMACS_CONFIG_OPTIONS
);
2492 DEFVAR_BOOL ("noninteractive", &noninteractive1
,
2493 doc
: /* Non-nil means Emacs is running without interactive terminal. */);
2495 DEFVAR_LISP ("kill-emacs-hook", &Vkill_emacs_hook
,
2496 doc
: /* Hook to be run when kill-emacs is called.
2497 Since `kill-emacs' may be invoked when the terminal is disconnected (or
2498 in other similar situations), functions placed on this hook should not
2499 expect to be able to interact with the user. To ask for confirmation,
2500 see `kill-emacs-query-functions' instead.
2502 The hook is not run in batch mode, i.e., if `noninteractive' is non-nil. */);
2503 Vkill_emacs_hook
= Qnil
;
2505 empty_string
= build_string ("");
2506 staticpro (&empty_string
);
2508 DEFVAR_INT ("emacs-priority", &emacs_priority
,
2509 doc
: /* Priority for Emacs to run at.
2510 This value is effective only if set before Emacs is dumped,
2511 and only if the Emacs executable is installed with setuid to permit
2512 it to change priority. (Emacs sets its uid back to the real uid.)
2513 Currently, you need to define SET_EMACS_PRIORITY in `config.h'
2514 before you compile Emacs, to enable the code for this feature. */);
2517 DEFVAR_LISP ("path-separator", &Vpath_separator
,
2518 doc
: /* The directory separator in search paths, as a string. */);
2521 Vpath_separator
= make_string (&c
, 1);
2524 DEFVAR_LISP ("invocation-name", &Vinvocation_name
,
2525 doc
: /* The program name that was used to run Emacs.
2526 Any directory names are omitted. */);
2528 DEFVAR_LISP ("invocation-directory", &Vinvocation_directory
,
2529 doc
: /* The directory in which the Emacs executable was found, to run it.
2530 The value is nil if that directory's name is not known. */);
2532 DEFVAR_LISP ("installation-directory", &Vinstallation_directory
,
2533 doc
: /* A directory within which to look for the `lib-src' and `etc' directories.
2534 This is non-nil when we can't find those directories in their standard
2535 installed locations, but we can find them
2536 near where the Emacs executable was found. */);
2537 Vinstallation_directory
= Qnil
;
2539 DEFVAR_LISP ("system-messages-locale", &Vsystem_messages_locale
,
2540 doc
: /* System locale for messages. */);
2541 Vsystem_messages_locale
= Qnil
;
2543 DEFVAR_LISP ("previous-system-messages-locale",
2544 &Vprevious_system_messages_locale
,
2545 doc
: /* Most recently used system locale for messages. */);
2546 Vprevious_system_messages_locale
= Qnil
;
2548 DEFVAR_LISP ("system-time-locale", &Vsystem_time_locale
,
2549 doc
: /* System locale for time. */);
2550 Vsystem_time_locale
= Qnil
;
2552 DEFVAR_LISP ("previous-system-time-locale", &Vprevious_system_time_locale
,
2553 doc
: /* Most recently used system locale for time. */);
2554 Vprevious_system_time_locale
= Qnil
;
2557 /* arch-tag: 7bfd356a-c720-4612-8ab6-aa4222931c2e
2558 (do not change this comment) */