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83ffe9cd | 1 | /* Copyright (C) 2013-2023 Free Software Foundation, Inc. |
2077db1b CT |
2 | |
3 | This file is part of GCC. | |
4 | ||
5 | modify it under the terms of the GNU Library General Public License | |
6 | as published by the Free Software Foundation; either version 2, or | |
7 | (at your option) any later version. | |
8 | ||
9 | In addition to the permissions in the GNU Library General Public | |
10 | License, the Free Software Foundation gives you unlimited | |
11 | permission to link the compiled version of this file into | |
12 | combinations with other programs, and to distribute those | |
13 | combinations without any restriction coming from the use of this | |
14 | file. (The Library Public License restrictions do apply in other | |
15 | respects; for example, they cover modification of the file, and | |
16 | distribution when not linked into a combined executable.) | |
17 | ||
18 | This program is distributed in the hope that it will be useful, but | |
19 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
21 | Library General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU Library General Public | |
24 | License along with this program; if not, write to the Free Software | |
25 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA | |
26 | 02110-1301, USA. */ | |
27 | ||
28 | ||
29 | #ifndef __VTV_H__ | |
30 | #define __VTV_H__ | |
31 | ||
32 | /* We could have used an enumeration here but it just makes it more | |
33 | difficult for the compiler to generate a call to this. These are | |
34 | used as arguments to the function __VLTChangePermission, declared | |
35 | below. */ | |
36 | #define __VLTP_READ_ONLY 0 | |
37 | #define __VLTP_READ_WRITE 1 | |
38 | ||
39 | #ifdef __cplusplus | |
40 | extern "C" void __VLTChangePermission (int); | |
41 | #else | |
42 | extern void __VLTChangePermission (int); | |
43 | #endif | |
44 | ||
45 | #ifdef BIG_PAGE_SIZE | |
46 | /* TODO - Replace '4096' below with correct big page size. */ | |
47 | #define VTV_PAGE_SIZE 4096 | |
48 | #else | |
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49 | #if defined(__sun__) && defined(__svr4__) && defined(__sparc__) |
50 | #define VTV_PAGE_SIZE 8192 | |
27b9e115 LC |
51 | #elif defined(__loongarch_lp64) |
52 | /* The page size is configurable by the kernel to be 4, 16 or 64 KiB. | |
53 | For now, only the default page size of 16KiB is supported. */ | |
54 | #define VTV_PAGE_SIZE 16384 | |
e5ef217c | 55 | #else |
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56 | #define VTV_PAGE_SIZE 4096 |
57 | #endif | |
e5ef217c | 58 | #endif |
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59 | |
60 | ||
61 | ||
62 | #endif /* __VTV_H__ */ |