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[bpt/emacs.git] / src / lastfile.c

/* Mark end of data space to dump as pure, for GNU Emacs.
   Copyright (C) 1985 Free Software Foundation, Inc.

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
the Free Software Foundation; either version 2, or (at your option)
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
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */


/* How this works:

 Fdump_emacs dumps everything up to my_edata as text space (pure).

 The files of Emacs are written so as to have no initialized
 data that can ever need to be altered except at the first startup.
 This is so that those words can be dumped as sharable text.

 It is not possible to exercise such control over library files.
 So it is necessary to refrain from making their data areas shared.
 Therefore, this file is loaded following all the files of Emacs
 but before library files.
 As a result, the symbol my_edata indicates the point
 in data space between data coming from Emacs and data
 coming from libraries.
*/

#include <config.h>

char my_edata[] = "End of Emacs initialized data";

#ifdef WINDOWSNT
/* Help unexec locate the end of the .bss area used by Emacs (which
   isn't always a separate section in NT executables).  */
char my_endbss[1];

/* The Alpha MSVC linker globally segregates all static and public bss
   data, so we must take both into account to determine the true extent
   of the bss area used by Emacs.  */
static char _my_endbss[1];
char * my_endbss_static = _my_endbss;
#endif