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aa24b516a2
* Makefile.in (enable_lzo): New rule. * conf/i386-pc.rmk (grub_mkimage_SOURCES): New test with enable_lzo. * configure.ac (ENABLE_LZO): New option --enable-lzo. * boot/i386/pc/lnxboot.S: #include <config.h>. * include/grub/i386/pc/kernel.h (GRUB_KERNEL_MACHINE_RAW_SIZE): Change its value accordding to the compression algorithm used, lzo or lzma. * util/i386/pc/grub-mkimage.c (compress_kernel): Use different compression algorithm according to configure macro. * kern/i386/pc/startup.S (codestart): Likewise. * kern/i386/pc/lzma_decode.S: New file. * include/grub/lib/LzFind.h: Likewise. * include/grub/lib/LzHash.h: Likewise. * include/grub/lib/LzmaDec.h: Likewise. * include/grub/lib/LzmaEnc.h: Likewise. * include/grub/lib/LzmaTypes.h: Likewise. * lib/LzFind.c: Likewise. * lib/LzmaDec.c: Likewise. * lib/LzmaEnc.c: Likewise.
131 lines
4.0 KiB
C
131 lines
4.0 KiB
C
/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (c) 1999-2008 Igor Pavlov
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* Copyright (C) 2008 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* This code was taken from LZMA SDK 4.58 beta, and was slightly modified
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* to adapt it to GRUB's requirement.
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*
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* See <http://www.7-zip.org>, for more information about LZMA.
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*/
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#ifndef __LZFIND_H
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#define __LZFIND_H
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#include <grub/lib/LzmaTypes.h>
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typedef UInt32 CLzRef;
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typedef struct _CMatchFinder
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{
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Byte *buffer;
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UInt32 pos;
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UInt32 posLimit;
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UInt32 streamPos;
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UInt32 lenLimit;
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UInt32 cyclicBufferPos;
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UInt32 cyclicBufferSize; /* it must be = (historySize + 1) */
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UInt32 matchMaxLen;
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CLzRef *hash;
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CLzRef *son;
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UInt32 hashMask;
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UInt32 cutValue;
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Byte *bufferBase;
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ISeqInStream *stream;
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int streamEndWasReached;
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UInt32 blockSize;
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UInt32 keepSizeBefore;
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UInt32 keepSizeAfter;
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UInt32 numHashBytes;
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int directInput;
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int btMode;
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/* int skipModeBits; */
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int bigHash;
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UInt32 historySize;
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UInt32 fixedHashSize;
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UInt32 hashSizeSum;
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UInt32 numSons;
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SRes result;
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UInt32 crc[256];
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} CMatchFinder;
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#define Inline_MatchFinder_GetPointerToCurrentPos(p) ((p)->buffer)
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#define Inline_MatchFinder_GetIndexByte(p, index) ((p)->buffer[(Int32)(index)])
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#define Inline_MatchFinder_GetNumAvailableBytes(p) ((p)->streamPos - (p)->pos)
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int MatchFinder_NeedMove(CMatchFinder *p);
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Byte *MatchFinder_GetPointerToCurrentPos(CMatchFinder *p);
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void MatchFinder_MoveBlock(CMatchFinder *p);
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void MatchFinder_ReadIfRequired(CMatchFinder *p);
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void MatchFinder_Construct(CMatchFinder *p);
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/* Conditions:
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historySize <= 3 GB
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keepAddBufferBefore + matchMaxLen + keepAddBufferAfter < 511MB
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*/
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int MatchFinder_Create(CMatchFinder *p, UInt32 historySize,
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UInt32 keepAddBufferBefore, UInt32 matchMaxLen, UInt32 keepAddBufferAfter,
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ISzAlloc *alloc);
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void MatchFinder_Free(CMatchFinder *p, ISzAlloc *alloc);
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void MatchFinder_Normalize3(UInt32 subValue, CLzRef *items, UInt32 numItems);
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void MatchFinder_ReduceOffsets(CMatchFinder *p, UInt32 subValue);
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UInt32 * GetMatchesSpec1(UInt32 lenLimit, UInt32 curMatch, UInt32 pos, const Byte *buffer, CLzRef *son,
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UInt32 _cyclicBufferPos, UInt32 _cyclicBufferSize, UInt32 _cutValue,
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UInt32 *distances, UInt32 maxLen);
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/*
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Conditions:
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Mf_GetNumAvailableBytes_Func must be called before each Mf_GetMatchLen_Func.
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Mf_GetPointerToCurrentPos_Func's result must be used only before any other function
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*/
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typedef void (*Mf_Init_Func)(void *object);
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typedef Byte (*Mf_GetIndexByte_Func)(void *object, Int32 index);
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typedef UInt32 (*Mf_GetNumAvailableBytes_Func)(void *object);
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typedef const Byte * (*Mf_GetPointerToCurrentPos_Func)(void *object);
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typedef UInt32 (*Mf_GetMatches_Func)(void *object, UInt32 *distances);
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typedef void (*Mf_Skip_Func)(void *object, UInt32);
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typedef struct _IMatchFinder
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{
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Mf_Init_Func Init;
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Mf_GetIndexByte_Func GetIndexByte;
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Mf_GetNumAvailableBytes_Func GetNumAvailableBytes;
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Mf_GetPointerToCurrentPos_Func GetPointerToCurrentPos;
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Mf_GetMatches_Func GetMatches;
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Mf_Skip_Func Skip;
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} IMatchFinder;
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void MatchFinder_CreateVTable(CMatchFinder *p, IMatchFinder *vTable);
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void MatchFinder_Init(CMatchFinder *p);
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UInt32 Bt3Zip_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances);
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UInt32 Hc3Zip_MatchFinder_GetMatches(CMatchFinder *p, UInt32 *distances);
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void Bt3Zip_MatchFinder_Skip(CMatchFinder *p, UInt32 num);
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void Hc3Zip_MatchFinder_Skip(CMatchFinder *p, UInt32 num);
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#endif
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