Commit | Line | Data |
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e772f7cd | 1 | /* How much read-only Lisp storage a dumped Emacs needs. |
c6c5df7f | 2 | Copyright (C) 1993 Free Software Foundation, Inc. |
e772f7cd JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
6 | GNU Emacs is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 1, or (at your option) | |
9 | any later version. | |
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 | |
17 | along with GNU Emacs; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
e4f74c7e | 20 | /* Define PURESIZE, the number of bytes of pure Lisp code to leave space for. |
e772f7cd JB |
21 | |
22 | At one point, this was defined in config.h, meaning that changing | |
23 | PURESIZE would make Make recompile all of Emacs. But only a few | |
d427b66a | 24 | files actually use PURESIZE, so we split it out to its own .h file. |
e772f7cd | 25 | |
d427b66a JB |
26 | Make sure to include this file after config.h, since that tells us |
27 | whether we are running X windows, which tells us how much pure | |
28 | storage to allocate. */ | |
29 | ||
e4f74c7e RS |
30 | /* First define a measure of the amount of data we have. */ |
31 | ||
87485d6f MW |
32 | /* A system configuration file may set this to request a certain extra |
33 | amount of storage. This is a lot more update-robust that defining | |
34 | BASE_PURESIZE or even PURESIZE directly. */ | |
35 | #ifndef SYSTEM_PURESIZE_EXTRA | |
36 | #define SYSTEM_PURESIZE_EXTRA 0 | |
37 | #endif | |
38 | ||
e4f74c7e | 39 | #ifndef BASE_PURESIZE |
4ce8eec2 | 40 | #ifdef MULTI_FRAME |
87485d6f | 41 | #define BASE_PURESIZE (265000 + SYSTEM_PURESIZE_EXTRA) |
d427b66a | 42 | #else |
87485d6f | 43 | #define BASE_PURESIZE (220000 + SYSTEM_PURESIZE_EXTRA) |
e4f74c7e | 44 | #endif |
d427b66a | 45 | #endif |
e4f74c7e RS |
46 | |
47 | /* Increase BASE_PURESIZE by a ratio depending on the machine's word size. */ | |
48 | #ifndef PURESIZE_RATIO | |
49 | #if VALBITS + GCTYPEBITS + 1 > 32 | |
50 | #define PURESIZE_RATIO 8/5 /* Don't surround with `()'. */ | |
51 | #else | |
52 | #define PURESIZE_RATIO 1 | |
53 | #endif | |
54 | #endif | |
55 | ||
56 | /* This is the actual size in bytes to allocate. */ | |
57 | #ifndef PURESIZE | |
58 | #define PURESIZE (BASE_PURESIZE * PURESIZE_RATIO) | |
d427b66a | 59 | #endif |
e772f7cd JB |
60 | |
61 | #ifdef VIRT_ADDR_VARIES | |
62 | ||
63 | /* For machines like APOLLO where text and data can go anywhere | |
64 | in virtual memory. */ | |
65 | #define CHECK_IMPURE(obj) \ | |
5647f979 | 66 | { extern EMACS_INT pure[]; \ |
e772f7cd JB |
67 | if ((PNTR_COMPARISON_TYPE) XPNTR (obj) < (PNTR_COMPARISON_TYPE) ((char *) pure + PURESIZE) \ |
68 | && (PNTR_COMPARISON_TYPE) XPNTR (obj) >= (PNTR_COMPARISON_TYPE) pure) \ | |
69 | pure_write_error (); } | |
70 | ||
71 | #else /* not VIRT_ADDR_VARIES */ | |
72 | #ifdef PNTR_COMPARISON_TYPE | |
73 | ||
74 | /* when PNTR_COMPARISON_TYPE is not the default (unsigned int) */ | |
75 | #define CHECK_IMPURE(obj) \ | |
5647f979 | 76 | { extern EMACS_INT my_edata; \ |
e772f7cd JB |
77 | if ((PNTR_COMPARISON_TYPE) XPNTR (obj) < (PNTR_COMPARISON_TYPE) &my_edata) \ |
78 | pure_write_error (); } | |
79 | ||
80 | #else /* not VIRT_ADDRESS_VARIES, not PNTR_COMPARISON_TYPE */ | |
81 | ||
82 | #define CHECK_IMPURE(obj) \ | |
5647f979 | 83 | { extern EMACS_INT my_edata; \ |
e772f7cd JB |
84 | if (XPNTR (obj) < (unsigned int) &my_edata) \ |
85 | pure_write_error (); } | |
86 | ||
87 | #endif /* PNTR_COMPARISON_TYPE */ | |
88 | #endif /* VIRT_ADDRESS_VARIES */ | |
89 |