X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=MdeModulePkg%2FLibrary%2FLzmaCustomDecompressLib%2FSdk%2FC%2FLzHash.h;fp=MdeModulePkg%2FLibrary%2FLzmaCustomDecompressLib%2FSdk%2FC%2FLzHash.h;h=c923417501689882dfd773a91c412f993f6272a4;hb=11ff2c714b3b2e79f574ed18b75edabd77f9a336;hp=0000000000000000000000000000000000000000;hpb=a7adc5c566e5c434050868bd3c8a54101df1c548;p=mirror_edk2.git

diff --git a/MdeModulePkg/Library/LzmaCustomDecompressLib/Sdk/C/LzHash.h b/MdeModulePkg/Library/LzmaCustomDecompressLib/Sdk/C/LzHash.h
new file mode 100644
index 0000000000..c923417501
--- /dev/null
+++ b/MdeModulePkg/Library/LzmaCustomDecompressLib/Sdk/C/LzHash.h
@@ -0,0 +1,54 @@
+/* LzHash.h -- HASH functions for LZ algorithms
+2008-10-04 : Igor Pavlov : Public domain */
+
+#ifndef __LZHASH_H
+#define __LZHASH_H
+
+#define kHash2Size (1 << 10)
+#define kHash3Size (1 << 16)
+#define kHash4Size (1 << 20)
+
+#define kFix3HashSize (kHash2Size)
+#define kFix4HashSize (kHash2Size + kHash3Size)
+#define kFix5HashSize (kHash2Size + kHash3Size + kHash4Size)
+
+#define HASH2_CALC hashValue = cur[0] | ((UInt32)cur[1] << 8);
+
+#define HASH3_CALC { \
+  UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
+  hash2Value = temp & (kHash2Size - 1); \
+  hashValue = (temp ^ ((UInt32)cur[2] << 8)) & p->hashMask; }
+
+#define HASH4_CALC { \
+  UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
+  hash2Value = temp & (kHash2Size - 1); \
+  hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
+  hashValue = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)) & p->hashMask; }
+
+#define HASH5_CALC { \
+  UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
+  hash2Value = temp & (kHash2Size - 1); \
+  hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
+  hash4Value = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)); \
+  hashValue = (hash4Value ^ (p->crc[cur[4]] << 3)) & p->hashMask; \
+  hash4Value &= (kHash4Size - 1); }
+
+/* #define HASH_ZIP_CALC hashValue = ((cur[0] | ((UInt32)cur[1] << 8)) ^ p->crc[cur[2]]) & 0xFFFF; */
+#define HASH_ZIP_CALC hashValue = ((cur[2] | ((UInt32)cur[0] << 8)) ^ p->crc[cur[1]]) & 0xFFFF;
+
+
+#define MT_HASH2_CALC \
+  hash2Value = (p->crc[cur[0]] ^ cur[1]) & (kHash2Size - 1);
+
+#define MT_HASH3_CALC { \
+  UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
+  hash2Value = temp & (kHash2Size - 1); \
+  hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); }
+
+#define MT_HASH4_CALC { \
+  UInt32 temp = p->crc[cur[0]] ^ cur[1]; \
+  hash2Value = temp & (kHash2Size - 1); \
+  hash3Value = (temp ^ ((UInt32)cur[2] << 8)) & (kHash3Size - 1); \
+  hash4Value = (temp ^ ((UInt32)cur[2] << 8) ^ (p->crc[cur[3]] << 5)) & (kHash4Size - 1); }
+
+#endif