Commit | Line | Data |
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e772f7cd | 1 | /* How much read-only Lisp storage a dumped Emacs needs. |
429ab54e | 2 | Copyright (C) 1993, 2001, 2002, 2003, 2004, 2005, |
8cabe764 | 3 | 2006, 2007, 2008 Free Software Foundation, Inc. |
e772f7cd JB |
4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
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 | |
684d6f5b | 9 | the Free Software Foundation; either version 3, or (at your option) |
e772f7cd JB |
10 | any later version. |
11 | ||
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. | |
16 | ||
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 | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
e772f7cd | 21 | |
e4f74c7e | 22 | /* Define PURESIZE, the number of bytes of pure Lisp code to leave space for. |
e772f7cd JB |
23 | |
24 | At one point, this was defined in config.h, meaning that changing | |
25 | PURESIZE would make Make recompile all of Emacs. But only a few | |
d427b66a | 26 | files actually use PURESIZE, so we split it out to its own .h file. |
e772f7cd | 27 | |
d427b66a JB |
28 | Make sure to include this file after config.h, since that tells us |
29 | whether we are running X windows, which tells us how much pure | |
30 | storage to allocate. */ | |
31 | ||
e4f74c7e RS |
32 | /* First define a measure of the amount of data we have. */ |
33 | ||
87485d6f MW |
34 | /* A system configuration file may set this to request a certain extra |
35 | amount of storage. This is a lot more update-robust that defining | |
36 | BASE_PURESIZE or even PURESIZE directly. */ | |
37 | #ifndef SYSTEM_PURESIZE_EXTRA | |
38 | #define SYSTEM_PURESIZE_EXTRA 0 | |
39 | #endif | |
40 | ||
64aba29c RS |
41 | #ifndef SITELOAD_PURESIZE_EXTRA |
42 | #define SITELOAD_PURESIZE_EXTRA 0 | |
43 | #endif | |
44 | ||
e4f74c7e | 45 | #ifndef BASE_PURESIZE |
dffd9d9a | 46 | #define BASE_PURESIZE (1210000 + SYSTEM_PURESIZE_EXTRA + SITELOAD_PURESIZE_EXTRA) |
d427b66a | 47 | #endif |
e4f74c7e RS |
48 | |
49 | /* Increase BASE_PURESIZE by a ratio depending on the machine's word size. */ | |
50 | #ifndef PURESIZE_RATIO | |
1b0338f7 | 51 | #if BITS_PER_EMACS_INT > 32 |
6a258a33 | 52 | #define PURESIZE_RATIO 10/6 /* Don't surround with `()'. */ |
e4f74c7e RS |
53 | #else |
54 | #define PURESIZE_RATIO 1 | |
55 | #endif | |
56 | #endif | |
57 | ||
58 | /* This is the actual size in bytes to allocate. */ | |
59 | #ifndef PURESIZE | |
60 | #define PURESIZE (BASE_PURESIZE * PURESIZE_RATIO) | |
d427b66a | 61 | #endif |
e772f7cd | 62 | |
f75e1ee5 KH |
63 | /* Signal an error if OBJ is pure. */ |
64 | #define CHECK_IMPURE(obj) \ | |
65 | { if (PURE_P (obj)) \ | |
66 | pure_write_error (); } | |
ec5d8db7 | 67 | |
404be028 | 68 | extern void pure_write_error P_ ((void)) NO_RETURN; |
f75e1ee5 KH |
69 | \f |
70 | /* Define PURE_P. */ | |
e772f7cd | 71 | |
fec76d43 | 72 | #ifdef VIRT_ADDR_VARIES |
e39a993c | 73 | /* For machines where text and data can go anywhere |
e772f7cd | 74 | in virtual memory. */ |
f75e1ee5 KH |
75 | |
76 | extern EMACS_INT pure[]; | |
77 | ||
78 | #define PURE_P(obj) \ | |
79 | ((PNTR_COMPARISON_TYPE) XPNTR (obj) < (PNTR_COMPARISON_TYPE) ((char *) pure + PURESIZE) \ | |
80 | && (PNTR_COMPARISON_TYPE) XPNTR (obj) >= (PNTR_COMPARISON_TYPE) pure) | |
e772f7cd JB |
81 | |
82 | #else /* not VIRT_ADDR_VARIES */ | |
83 | #ifdef PNTR_COMPARISON_TYPE | |
f75e1ee5 | 84 | /* When PNTR_COMPARISON_TYPE is not the default (unsigned int). */ |
e772f7cd | 85 | |
f75e1ee5 KH |
86 | extern char my_edata[]; |
87 | ||
88 | #define PURE_P(obj) \ | |
89 | ((PNTR_COMPARISON_TYPE) XPNTR (obj) < (PNTR_COMPARISON_TYPE) my_edata) | |
e772f7cd JB |
90 | |
91 | #else /* not VIRT_ADDRESS_VARIES, not PNTR_COMPARISON_TYPE */ | |
92 | ||
f75e1ee5 | 93 | extern char my_edata[]; |
177c0ea7 | 94 | |
f75e1ee5 KH |
95 | #define PURE_P(obj) \ |
96 | (XPNTR (obj) < (unsigned int) my_edata) | |
e772f7cd JB |
97 | |
98 | #endif /* PNTR_COMPARISON_TYPE */ | |
99 | #endif /* VIRT_ADDRESS_VARIES */ | |
ab5796a9 MB |
100 | |
101 | /* arch-tag: fd9b0a91-a70e-4729-a75a-6bb4ca1ce14f | |
102 | (do not change this comment) */ |