| 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 | |
|---|
| 14 | #include <linux/zlib.h> |
|---|
| 15 | #ifdef CONFIG_ZLIB_DFLTCC |
|---|
| 16 | #include "../zlib_dfltcc/dfltcc.h" |
|---|
| 17 | #include <asm/page.h> |
|---|
| 18 | #endif |
|---|
| 19 | |
|---|
| 20 | /* memory allocation for inflation */ |
|---|
| 21 | |
|---|
| 22 | struct inflate_workspace { |
|---|
| 23 | struct inflate_state inflate_state; |
|---|
| 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 |
|---|
| 30 | }; |
|---|
| 31 | |
|---|
| 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)) |
|---|
| 38 | |
|---|
| 39 | #endif |
|---|
| 40 | |
|---|
