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d427b66a | 1 | /* Mark end of data space to dump as pure, for GNU Emacs. |
acaf905b | 2 | Copyright (C) 1985, 2001-2012 Free Software Foundation, Inc. |
d427b66a JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
9ec0b715 | 6 | GNU Emacs is free software: you can redistribute it and/or modify |
d427b66a | 7 | it under the terms of the GNU General Public License as published by |
9ec0b715 GM |
8 | the Free Software Foundation, either version 3 of the License, or |
9 | (at your option) any later version. | |
d427b66a JB |
10 | |
11 | GNU Emacs is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
9ec0b715 | 17 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
d427b66a JB |
18 | |
19 | ||
20 | /* How this works: | |
21 | ||
22 | Fdump_emacs dumps everything up to my_edata as text space (pure). | |
23 | ||
24 | The files of Emacs are written so as to have no initialized | |
25 | data that can ever need to be altered except at the first startup. | |
333f9019 | 26 | This is so that those words can be dumped as shareable text. |
d427b66a JB |
27 | |
28 | It is not possible to exercise such control over library files. | |
29 | So it is necessary to refrain from making their data areas shared. | |
30 | Therefore, this file is loaded following all the files of Emacs | |
31 | but before library files. | |
32 | As a result, the symbol my_edata indicates the point | |
33 | in data space between data coming from Emacs and data | |
34 | coming from libraries. | |
35 | */ | |
36 | ||
cfe8de43 AI |
37 | #include <config.h> |
38 | ||
bb8a51f5 RS |
39 | char my_edata[] = "End of Emacs initialized data"; |
40 | ||
f516a861 GV |
41 | /* Help unexec locate the end of the .bss area used by Emacs (which |
42 | isn't always a separate section in NT executables). */ | |
43 | char my_endbss[1]; | |
cfe8de43 | 44 | |
4a3bf565 GV |
45 | /* The Alpha MSVC linker globally segregates all static and public bss |
46 | data, so we must take both into account to determine the true extent | |
47 | of the bss area used by Emacs. */ | |
48 | static char _my_endbss[1]; | |
49 | char * my_endbss_static = _my_endbss; |