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1da177e4 LT |
1 | /* infutil.h -- types and macros common to blocks and codes |
2 | * Copyright (C) 1995-1998 Mark Adler | |
3 | * For conditions of distribution and use, see copyright notice in zlib.h | |
4 | */ | |
5 | ||
6 | /* WARNING: this file should *not* be used by applications. It is | |
7 | part of the implementation of the compression library and is | |
8 | subject to change. Applications should only use zlib.h. | |
9 | */ | |
10 | ||
11 | #ifndef _INFUTIL_H | |
12 | #define _INFUTIL_H | |
13 | ||
4f3865fb | 14 | #include <linux/zlib.h> |
12619610 MZ |
15 | #ifdef CONFIG_ZLIB_DFLTCC |
16 | #include "../zlib_dfltcc/dfltcc.h" | |
17 | #include <asm/page.h> | |
18 | #endif | |
1da177e4 LT |
19 | |
20 | /* memory allocation for inflation */ | |
21 | ||
22 | struct inflate_workspace { | |
4f3865fb | 23 | struct inflate_state inflate_state; |
12619610 MZ |
24 | #ifdef CONFIG_ZLIB_DFLTCC |
25 | struct dfltcc_state dfltcc_state; | |
26 | unsigned char working_window[(1 << MAX_WBITS) + PAGE_SIZE]; | |
27 | #else | |
28 | unsigned char working_window[(1 << MAX_WBITS)]; | |
29 | #endif | |
1da177e4 LT |
30 | }; |
31 | ||
12619610 MZ |
32 | #ifdef CONFIG_ZLIB_DFLTCC |
33 | /* dfltcc_state must be doubleword aligned for DFLTCC call */ | |
34 | static_assert(offsetof(struct inflate_workspace, dfltcc_state) % 8 == 0); | |
35 | #endif | |
36 | ||
37 | #define WS(strm) ((struct inflate_workspace *)(strm->workspace)) | |
1da177e4 LT |
38 | |
39 | #endif |