mirror of https://github.com/OpenIPC/firmware.git
58 lines
2.1 KiB
Diff
58 lines
2.1 KiB
Diff
--- linux-4.9.37/include/linux/lzma/LzHash.h 1970-01-01 03:00:00.000000000 +0300
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+++ linux-4.9.y/include/linux/lzma/LzHash.h 2021-06-07 13:01:34.000000000 +0300
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@@ -0,0 +1,54 @@
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+/* LzHash.h -- HASH functions for LZ algorithms
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+2009-02-07 : Igor Pavlov : Public domain */
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+
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+#ifndef __LZ_HASH_H
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+#define __LZ_HASH_H
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+
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+#define kHash2Size (1 << 10)
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+#define kHash3Size (1 << 16)
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+#define kHash4Size (1 << 20)
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+
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+#define kFix3HashSize (kHash2Size)
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+#define kFix4HashSize (kHash2Size + kHash3Size)
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+#define kFix5HashSize (kHash2Size + kHash3Size + kHash4Size)
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+
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+#define HASH2_CALC hashValue = cur[0] | ((UInt32)cur[1] << 8);
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+
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+#define HASH3_CALC { \
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+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
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+ hash2Value = temp & (kHash2Size - 1); \
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+ hashValue = (temp ^ ((UInt32)cur[2] << 8)) & p->hashMask; }
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+
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+#define HASH4_CALC { \
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+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
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+ hash2Value = temp & (kHash2Size - 1); \
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+ hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
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+ hashValue = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)) & p->hashMask; }
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+
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+#define HASH5_CALC { \
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+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
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+ hash2Value = temp & (kHash2Size - 1); \
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+ hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
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+ hash4Value = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)); \
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+ hashValue = (hash4Value ^ (p->crc[cur[4]] << 3)) & p->hashMask; \
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+ hash4Value &= (kHash4Size - 1); }
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+
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+/* #define HASH_ZIP_CALC hashValue = ((cur[0] | ((UInt32)cur[1] << 8)) ^ p->crc[cur[2]]) & 0xFFFF; */
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+#define HASH_ZIP_CALC hashValue = ((cur[2] | ((UInt32)cur[0] << 8)) ^ p->crc[cur[1]]) & 0xFFFF;
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+
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+
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+#define MT_HASH2_CALC \
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+ hash2Value = (p->crc[cur[0]] ^ cur[1]) & (kHash2Size - 1);
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+
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+#define MT_HASH3_CALC { \
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+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
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+ hash2Value = temp & (kHash2Size - 1); \
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+ hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); }
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+
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+#define MT_HASH4_CALC { \
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+ UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
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+ hash2Value = temp & (kHash2Size - 1); \
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+ hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
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+ hash4Value = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)) & (kHash4Size - 1); }
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+
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+#endif
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