mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-12 14:36:56 +01:00
1015 lines
20 KiB
C
1015 lines
20 KiB
C
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/** @file
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Decompressor. Algorithm Ported from OPSD code (Decomp.asm) for Efi and Tiano
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compress algorithm.
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Copyright (c) 2004 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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--*/
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include "Decompress.h"
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//
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// Decompression algorithm begins here
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//
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#define BITBUFSIZ 32
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#define MAXMATCH 256
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#define THRESHOLD 3
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#define CODE_BIT 16
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#define BAD_TABLE - 1
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//
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// C: Char&Len Set; P: Position Set; T: exTra Set
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//
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#define NC (0xff + MAXMATCH + 2 - THRESHOLD)
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#define CBIT 9
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#define EFIPBIT 4
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#define MAXPBIT 5
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#define TBIT 5
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#define MAXNP ((1U << MAXPBIT) - 1)
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#define NT (CODE_BIT + 3)
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#if NT > MAXNP
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#define NPT NT
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#else
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#define NPT MAXNP
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#endif
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typedef struct {
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UINT8 *mSrcBase; // Starting address of compressed data
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UINT8 *mDstBase; // Starting address of decompressed data
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UINT32 mOutBuf;
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UINT32 mInBuf;
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UINT16 mBitCount;
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UINT32 mBitBuf;
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UINT32 mSubBitBuf;
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UINT16 mBlockSize;
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UINT32 mCompSize;
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UINT32 mOrigSize;
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UINT16 mBadTableFlag;
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UINT16 mLeft[2 * NC - 1];
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UINT16 mRight[2 * NC - 1];
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UINT8 mCLen[NC];
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UINT8 mPTLen[NPT];
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UINT16 mCTable[4096];
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UINT16 mPTTable[256];
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} SCRATCH_DATA;
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STATIC UINT16 mPbit = EFIPBIT;
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STATIC
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VOID
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FillBuf (
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IN SCRATCH_DATA *Sd,
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IN UINT16 NumOfBits
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)
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/*++
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Routine Description:
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Shift mBitBuf NumOfBits left. Read in NumOfBits of bits from source.
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Arguments:
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Sd - The global scratch data
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NumOfBit - The number of bits to shift and read.
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Returns: (VOID)
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--*/
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{
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Sd->mBitBuf = (UINT32) (((UINT64)Sd->mBitBuf) << NumOfBits);
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while (NumOfBits > Sd->mBitCount) {
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Sd->mBitBuf |= (UINT32) (((UINT64)Sd->mSubBitBuf) << (NumOfBits = (UINT16) (NumOfBits - Sd->mBitCount)));
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if (Sd->mCompSize > 0) {
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//
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// Get 1 byte into SubBitBuf
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//
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Sd->mCompSize--;
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Sd->mSubBitBuf = 0;
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Sd->mSubBitBuf = Sd->mSrcBase[Sd->mInBuf++];
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Sd->mBitCount = 8;
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} else {
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//
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// No more bits from the source, just pad zero bit.
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//
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Sd->mSubBitBuf = 0;
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Sd->mBitCount = 8;
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}
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}
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Sd->mBitCount = (UINT16) (Sd->mBitCount - NumOfBits);
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Sd->mBitBuf |= Sd->mSubBitBuf >> Sd->mBitCount;
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}
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STATIC
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UINT32
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GetBits (
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IN SCRATCH_DATA *Sd,
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IN UINT16 NumOfBits
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)
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/*++
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Routine Description:
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Get NumOfBits of bits out from mBitBuf. Fill mBitBuf with subsequent
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NumOfBits of bits from source. Returns NumOfBits of bits that are
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popped out.
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Arguments:
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Sd - The global scratch data.
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NumOfBits - The number of bits to pop and read.
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Returns:
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The bits that are popped out.
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--*/
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{
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UINT32 OutBits;
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OutBits = (UINT32) (Sd->mBitBuf >> (BITBUFSIZ - NumOfBits));
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FillBuf (Sd, NumOfBits);
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return OutBits;
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}
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STATIC
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UINT16
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MakeTable (
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IN SCRATCH_DATA *Sd,
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IN UINT16 NumOfChar,
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IN UINT8 *BitLen,
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IN UINT16 TableBits,
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OUT UINT16 *Table
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)
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/*++
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Routine Description:
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Creates Huffman Code mapping table according to code length array.
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Arguments:
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Sd - The global scratch data
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NumOfChar - Number of symbols in the symbol set
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BitLen - Code length array
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TableBits - The width of the mapping table
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Table - The table
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Returns:
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0 - OK.
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BAD_TABLE - The table is corrupted.
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--*/
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{
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UINT16 Count[17];
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UINT16 Weight[17];
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UINT16 Start[18];
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UINT16 *Pointer;
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UINT16 Index3;
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UINT16 Index;
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UINT16 Len;
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UINT16 Char;
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UINT16 JuBits;
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UINT16 Avail;
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UINT16 NextCode;
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UINT16 Mask;
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UINT16 MaxTableLength;
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for (Index = 1; Index <= 16; Index++) {
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Count[Index] = 0;
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}
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for (Index = 0; Index < NumOfChar; Index++) {
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if (BitLen[Index] > 16) {
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return (UINT16) BAD_TABLE;
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}
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Count[BitLen[Index]]++;
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}
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Start[1] = 0;
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for (Index = 1; Index <= 16; Index++) {
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Start[Index + 1] = (UINT16) (Start[Index] + (Count[Index] << (16 - Index)));
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}
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if (Start[17] != 0) {
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/*(1U << 16)*/
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return (UINT16) BAD_TABLE;
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}
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JuBits = (UINT16) (16 - TableBits);
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for (Index = 1; Index <= TableBits; Index++) {
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Start[Index] >>= JuBits;
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Weight[Index] = (UINT16) (1U << (TableBits - Index));
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}
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while (Index <= 16) {
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Weight[Index] = (UINT16) (1U << (16 - Index));
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Index++;
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}
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Index = (UINT16) (Start[TableBits + 1] >> JuBits);
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if (Index != 0) {
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Index3 = (UINT16) (1U << TableBits);
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while (Index != Index3) {
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Table[Index++] = 0;
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}
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}
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Avail = NumOfChar;
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Mask = (UINT16) (1U << (15 - TableBits));
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MaxTableLength = (UINT16) (1U << TableBits);
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for (Char = 0; Char < NumOfChar; Char++) {
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Len = BitLen[Char];
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if (Len == 0 || Len >= 17) {
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continue;
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}
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NextCode = (UINT16) (Start[Len] + Weight[Len]);
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if (Len <= TableBits) {
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if (Start[Len] >= NextCode || NextCode > MaxTableLength){
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return (UINT16) BAD_TABLE;
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}
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for (Index = Start[Len]; Index < NextCode; Index++) {
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Table[Index] = Char;
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}
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} else {
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Index3 = Start[Len];
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Pointer = &Table[Index3 >> JuBits];
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Index = (UINT16) (Len - TableBits);
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while (Index != 0) {
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if (*Pointer == 0) {
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Sd->mRight[Avail] = Sd->mLeft[Avail] = 0;
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*Pointer = Avail++;
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}
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if (Index3 & Mask) {
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Pointer = &Sd->mRight[*Pointer];
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} else {
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Pointer = &Sd->mLeft[*Pointer];
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}
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Index3 <<= 1;
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Index--;
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}
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*Pointer = Char;
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}
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Start[Len] = NextCode;
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}
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//
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// Succeeds
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//
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return 0;
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}
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STATIC
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UINT32
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DecodeP (
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IN SCRATCH_DATA *Sd
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)
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/*++
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Routine Description:
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Decodes a position value.
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Arguments:
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Sd - the global scratch data
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Returns:
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The position value decoded.
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--*/
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{
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UINT16 Val;
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UINT32 Mask;
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UINT32 Pos;
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Val = Sd->mPTTable[Sd->mBitBuf >> (BITBUFSIZ - 8)];
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if (Val >= MAXNP) {
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Mask = 1U << (BITBUFSIZ - 1 - 8);
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do {
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if (Sd->mBitBuf & Mask) {
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Val = Sd->mRight[Val];
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} else {
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Val = Sd->mLeft[Val];
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}
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Mask >>= 1;
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} while (Val >= MAXNP);
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}
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//
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// Advance what we have read
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//
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FillBuf (Sd, Sd->mPTLen[Val]);
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Pos = Val;
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if (Val > 1) {
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Pos = (UINT32) ((1U << (Val - 1)) + GetBits (Sd, (UINT16) (Val - 1)));
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}
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return Pos;
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}
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STATIC
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UINT16
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ReadPTLen (
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IN SCRATCH_DATA *Sd,
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IN UINT16 nn,
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IN UINT16 nbit,
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IN UINT16 Special
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)
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/*++
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Routine Description:
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Reads code lengths for the Extra Set or the Position Set
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Arguments:
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Sd - The global scratch data
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nn - Number of symbols
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nbit - Number of bits needed to represent nn
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Special - The special symbol that needs to be taken care of
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Returns:
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0 - OK.
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BAD_TABLE - Table is corrupted.
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--*/
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{
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UINT16 Number;
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UINT16 CharC;
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UINT16 Index;
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UINT32 Mask;
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assert (nn <= NPT);
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Number = (UINT16) GetBits (Sd, nbit);
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if (Number == 0) {
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CharC = (UINT16) GetBits (Sd, nbit);
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for (Index = 0; Index < 256; Index++) {
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Sd->mPTTable[Index] = CharC;
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}
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for (Index = 0; Index < nn; Index++) {
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Sd->mPTLen[Index] = 0;
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}
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return 0;
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}
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Index = 0;
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while (Index < Number && Index < NPT) {
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CharC = (UINT16) (Sd->mBitBuf >> (BITBUFSIZ - 3));
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if (CharC == 7) {
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Mask = 1U << (BITBUFSIZ - 1 - 3);
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while (Mask & Sd->mBitBuf) {
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Mask >>= 1;
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CharC += 1;
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}
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}
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FillBuf (Sd, (UINT16) ((CharC < 7) ? 3 : CharC - 3));
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Sd->mPTLen[Index++] = (UINT8) CharC;
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|
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if (Index == Special) {
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CharC = (UINT16) GetBits (Sd, 2);
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CharC--;
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while ((INT16) (CharC) >= 0 && Index < NPT) {
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Sd->mPTLen[Index++] = 0;
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CharC--;
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}
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}
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}
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|
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while (Index < nn && Index < NPT) {
|
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Sd->mPTLen[Index++] = 0;
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}
|
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|
|
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return MakeTable (Sd, nn, Sd->mPTLen, 8, Sd->mPTTable);
|
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}
|
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|
STATIC
|
||
|
VOID
|
||
|
ReadCLen (
|
||
|
SCRATCH_DATA *Sd
|
||
|
)
|
||
|
/*++
|
||
|
|
||
|
Routine Description:
|
||
|
|
||
|
Reads code lengths for Char&Len Set.
|
||
|
|
||
|
Arguments:
|
||
|
|
||
|
Sd - the global scratch data
|
||
|
|
||
|
Returns: (VOID)
|
||
|
|
||
|
--*/
|
||
|
{
|
||
|
UINT16 Number;
|
||
|
UINT16 CharC;
|
||
|
UINT16 Index;
|
||
|
UINT32 Mask;
|
||
|
|
||
|
Number = (UINT16) GetBits (Sd, CBIT);
|
||
|
|
||
|
if (Number == 0) {
|
||
|
CharC = (UINT16) GetBits (Sd, CBIT);
|
||
|
|
||
|
for (Index = 0; Index < NC; Index++) {
|
||
|
Sd->mCLen[Index] = 0;
|
||
|
}
|
||
|
|
||
|
for (Index = 0; Index < 4096; Index++) {
|
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|
Sd->mCTable[Index] = CharC;
|
||
|
}
|
||
|
|
||
|
return ;
|
||
|
}
|
||
|
|
||
|
Index = 0;
|
||
|
while (Index < Number) {
|
||
|
|
||
|
CharC = Sd->mPTTable[Sd->mBitBuf >> (BITBUFSIZ - 8)];
|
||
|
if (CharC >= NT) {
|
||
|
Mask = 1U << (BITBUFSIZ - 1 - 8);
|
||
|
|
||
|
do {
|
||
|
|
||
|
if (Mask & Sd->mBitBuf) {
|
||
|
CharC = Sd->mRight[CharC];
|
||
|
} else {
|
||
|
CharC = Sd->mLeft[CharC];
|
||
|
}
|
||
|
|
||
|
Mask >>= 1;
|
||
|
|
||
|
} while (CharC >= NT);
|
||
|
}
|
||
|
//
|
||
|
// Advance what we have read
|
||
|
//
|
||
|
FillBuf (Sd, Sd->mPTLen[CharC]);
|
||
|
|
||
|
if (CharC <= 2) {
|
||
|
|
||
|
if (CharC == 0) {
|
||
|
CharC = 1;
|
||
|
} else if (CharC == 1) {
|
||
|
CharC = (UINT16) (GetBits (Sd, 4) + 3);
|
||
|
} else if (CharC == 2) {
|
||
|
CharC = (UINT16) (GetBits (Sd, CBIT) + 20);
|
||
|
}
|
||
|
|
||
|
CharC--;
|
||
|
while ((INT16) (CharC) >= 0) {
|
||
|
Sd->mCLen[Index++] = 0;
|
||
|
CharC--;
|
||
|
}
|
||
|
|
||
|
} else {
|
||
|
|
||
|
Sd->mCLen[Index++] = (UINT8) (CharC - 2);
|
||
|
|
||
|
}
|
||
|
}
|
||
|
|
||
|
while (Index < NC) {
|
||
|
Sd->mCLen[Index++] = 0;
|
||
|
}
|
||
|
|
||
|
MakeTable (Sd, NC, Sd->mCLen, 12, Sd->mCTable);
|
||
|
|
||
|
return ;
|
||
|
}
|
||
|
|
||
|
STATIC
|
||
|
UINT16
|
||
|
DecodeC (
|
||
|
SCRATCH_DATA *Sd
|
||
|
)
|
||
|
/*++
|
||
|
|
||
|
Routine Description:
|
||
|
|
||
|
Decode a character/length value.
|
||
|
|
||
|
Arguments:
|
||
|
|
||
|
Sd - The global scratch data.
|
||
|
|
||
|
Returns:
|
||
|
|
||
|
The value decoded.
|
||
|
|
||
|
--*/
|
||
|
{
|
||
|
UINT16 Index2;
|
||
|
UINT32 Mask;
|
||
|
|
||
|
if (Sd->mBlockSize == 0) {
|
||
|
//
|
||
|
// Starting a new block
|
||
|
//
|
||
|
Sd->mBlockSize = (UINT16) GetBits (Sd, 16);
|
||
|
Sd->mBadTableFlag = ReadPTLen (Sd, NT, TBIT, 3);
|
||
|
if (Sd->mBadTableFlag != 0) {
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
ReadCLen (Sd);
|
||
|
|
||
|
Sd->mBadTableFlag = ReadPTLen (Sd, MAXNP, mPbit, (UINT16) (-1));
|
||
|
if (Sd->mBadTableFlag != 0) {
|
||
|
return 0;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
Sd->mBlockSize--;
|
||
|
Index2 = Sd->mCTable[Sd->mBitBuf >> (BITBUFSIZ - 12)];
|
||
|
|
||
|
if (Index2 >= NC) {
|
||
|
Mask = 1U << (BITBUFSIZ - 1 - 12);
|
||
|
|
||
|
do {
|
||
|
if (Sd->mBitBuf & Mask) {
|
||
|
Index2 = Sd->mRight[Index2];
|
||
|
} else {
|
||
|
Index2 = Sd->mLeft[Index2];
|
||
|
}
|
||
|
|
||
|
Mask >>= 1;
|
||
|
} while (Index2 >= NC);
|
||
|
}
|
||
|
//
|
||
|
// Advance what we have read
|
||
|
//
|
||
|
FillBuf (Sd, Sd->mCLen[Index2]);
|
||
|
|
||
|
return Index2;
|
||
|
}
|
||
|
|
||
|
STATIC
|
||
|
VOID
|
||
|
Decode (
|
||
|
SCRATCH_DATA *Sd
|
||
|
)
|
||
|
/*++
|
||
|
|
||
|
Routine Description:
|
||
|
|
||
|
Decode the source data and put the resulting data into the destination buffer.
|
||
|
|
||
|
Arguments:
|
||
|
|
||
|
Sd - The global scratch data
|
||
|
|
||
|
Returns: (VOID)
|
||
|
|
||
|
--*/
|
||
|
{
|
||
|
UINT16 BytesRemain;
|
||
|
UINT32 DataIdx;
|
||
|
UINT16 CharC;
|
||
|
|
||
|
BytesRemain = (UINT16) (-1);
|
||
|
|
||
|
DataIdx = 0;
|
||
|
|
||
|
for (;;) {
|
||
|
CharC = DecodeC (Sd);
|
||
|
if (Sd->mBadTableFlag != 0) {
|
||
|
return ;
|
||
|
}
|
||
|
|
||
|
if (CharC < 256) {
|
||
|
//
|
||
|
// Process an Original character
|
||
|
//
|
||
|
Sd->mDstBase[Sd->mOutBuf++] = (UINT8) CharC;
|
||
|
if (Sd->mOutBuf >= Sd->mOrigSize) {
|
||
|
return ;
|
||
|
}
|
||
|
|
||
|
} else {
|
||
|
//
|
||
|
// Process a Pointer
|
||
|
//
|
||
|
CharC = (UINT16) (CharC - (UINT8_MAX + 1 - THRESHOLD));
|
||
|
|
||
|
BytesRemain = CharC;
|
||
|
|
||
|
DataIdx = Sd->mOutBuf - DecodeP (Sd) - 1;
|
||
|
|
||
|
BytesRemain--;
|
||
|
while ((INT16) (BytesRemain) >= 0) {
|
||
|
if (Sd->mOutBuf >= Sd->mOrigSize) {
|
||
|
return ;
|
||
|
}
|
||
|
if (DataIdx >= Sd->mOrigSize) {
|
||
|
Sd->mBadTableFlag = (UINT16) BAD_TABLE;
|
||
|
return ;
|
||
|
}
|
||
|
Sd->mDstBase[Sd->mOutBuf++] = Sd->mDstBase[DataIdx++];
|
||
|
|
||
|
BytesRemain--;
|
||
|
}
|
||
|
//
|
||
|
// Once mOutBuf is fully filled, directly return
|
||
|
//
|
||
|
if (Sd->mOutBuf >= Sd->mOrigSize) {
|
||
|
return ;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return ;
|
||
|
}
|
||
|
|
||
|
EFI_STATUS
|
||
|
GetInfo (
|
||
|
IN VOID *Source,
|
||
|
IN UINT32 SrcSize,
|
||
|
OUT UINT32 *DstSize,
|
||
|
OUT UINT32 *ScratchSize
|
||
|
)
|
||
|
/*++
|
||
|
|
||
|
Routine Description:
|
||
|
|
||
|
The implementation of EFI_DECOMPRESS_PROTOCOL.GetInfo().
|
||
|
|
||
|
Arguments:
|
||
|
|
||
|
Source - The source buffer containing the compressed data.
|
||
|
SrcSize - The size of source buffer
|
||
|
DstSize - The size of destination buffer.
|
||
|
ScratchSize - The size of scratch buffer.
|
||
|
|
||
|
Returns:
|
||
|
|
||
|
EFI_SUCCESS - The size of destination buffer and the size of scratch buffer are successfully retrieved.
|
||
|
EFI_INVALID_PARAMETER - The source data is corrupted
|
||
|
|
||
|
--*/
|
||
|
{
|
||
|
UINT8 *Src;
|
||
|
UINT32 CompSize;
|
||
|
|
||
|
*ScratchSize = sizeof (SCRATCH_DATA);
|
||
|
|
||
|
Src = Source;
|
||
|
if (SrcSize < 8) {
|
||
|
return EFI_INVALID_PARAMETER;
|
||
|
}
|
||
|
|
||
|
CompSize = Src[0] + (Src[1] << 8) + (Src[2] << 16) + (Src[3] << 24);
|
||
|
*DstSize = Src[4] + (Src[5] << 8) + (Src[6] << 16) + (Src[7] << 24);
|
||
|
|
||
|
if (SrcSize < CompSize + 8 || (CompSize + 8) < 8) {
|
||
|
return EFI_INVALID_PARAMETER;
|
||
|
}
|
||
|
|
||
|
return EFI_SUCCESS;
|
||
|
}
|
||
|
|
||
|
EFI_STATUS
|
||
|
Decompress (
|
||
|
IN VOID *Source,
|
||
|
IN UINT32 SrcSize,
|
||
|
IN OUT VOID *Destination,
|
||
|
IN UINT32 DstSize,
|
||
|
IN OUT VOID *Scratch,
|
||
|
IN UINT32 ScratchSize
|
||
|
)
|
||
|
/*++
|
||
|
|
||
|
Routine Description:
|
||
|
|
||
|
The implementation Efi and Tiano Decompress().
|
||
|
|
||
|
Arguments:
|
||
|
|
||
|
Source - The source buffer containing the compressed data.
|
||
|
SrcSize - The size of source buffer
|
||
|
Destination - The destination buffer to store the decompressed data
|
||
|
DstSize - The size of destination buffer.
|
||
|
Scratch - The buffer used internally by the decompress routine. This buffer is needed to store intermediate data.
|
||
|
ScratchSize - The size of scratch buffer.
|
||
|
|
||
|
Returns:
|
||
|
|
||
|
EFI_SUCCESS - Decompression is successful
|
||
|
EFI_INVALID_PARAMETER - The source data is corrupted
|
||
|
|
||
|
--*/
|
||
|
{
|
||
|
UINT32 Index;
|
||
|
UINT32 CompSize;
|
||
|
UINT32 OrigSize;
|
||
|
EFI_STATUS Status;
|
||
|
SCRATCH_DATA *Sd;
|
||
|
UINT8 *Src;
|
||
|
UINT8 *Dst;
|
||
|
|
||
|
Status = EFI_SUCCESS;
|
||
|
Src = Source;
|
||
|
Dst = Destination;
|
||
|
|
||
|
if (ScratchSize < sizeof (SCRATCH_DATA)) {
|
||
|
return EFI_INVALID_PARAMETER;
|
||
|
}
|
||
|
|
||
|
Sd = (SCRATCH_DATA *) Scratch;
|
||
|
|
||
|
if (SrcSize < 8) {
|
||
|
return EFI_INVALID_PARAMETER;
|
||
|
}
|
||
|
|
||
|
CompSize = Src[0] + (Src[1] << 8) + (Src[2] << 16) + (Src[3] << 24);
|
||
|
OrigSize = Src[4] + (Src[5] << 8) + (Src[6] << 16) + (Src[7] << 24);
|
||
|
|
||
|
if (SrcSize < CompSize + 8 || (CompSize + 8) < 8) {
|
||
|
return EFI_INVALID_PARAMETER;
|
||
|
}
|
||
|
|
||
|
if (DstSize != OrigSize) {
|
||
|
return EFI_INVALID_PARAMETER;
|
||
|
}
|
||
|
|
||
|
Src = Src + 8;
|
||
|
|
||
|
for (Index = 0; Index < sizeof (SCRATCH_DATA); Index++) {
|
||
|
((UINT8 *) Sd)[Index] = 0;
|
||
|
}
|
||
|
|
||
|
Sd->mSrcBase = Src;
|
||
|
Sd->mDstBase = Dst;
|
||
|
Sd->mCompSize = CompSize;
|
||
|
Sd->mOrigSize = OrigSize;
|
||
|
|
||
|
//
|
||
|
// Fill the first BITBUFSIZ bits
|
||
|
//
|
||
|
FillBuf (Sd, BITBUFSIZ);
|
||
|
|
||
|
//
|
||
|
// Decompress it
|
||
|
//
|
||
|
Decode (Sd);
|
||
|
|
||
|
if (Sd->mBadTableFlag != 0) {
|
||
|
//
|
||
|
// Something wrong with the source
|
||
|
//
|
||
|
Status = EFI_INVALID_PARAMETER;
|
||
|
}
|
||
|
|
||
|
return Status;
|
||
|
}
|
||
|
|
||
|
EFI_STATUS
|
||
|
EfiGetInfo (
|
||
|
IN VOID *Source,
|
||
|
IN UINT32 SrcSize,
|
||
|
OUT UINT32 *DstSize,
|
||
|
OUT UINT32 *ScratchSize
|
||
|
)
|
||
|
/*++
|
||
|
|
||
|
Routine Description:
|
||
|
|
||
|
The implementation Efi Decompress GetInfo().
|
||
|
|
||
|
Arguments:
|
||
|
|
||
|
Source - The source buffer containing the compressed data.
|
||
|
SrcSize - The size of source buffer
|
||
|
DstSize - The size of destination buffer.
|
||
|
ScratchSize - The size of scratch buffer.
|
||
|
|
||
|
Returns:
|
||
|
|
||
|
EFI_SUCCESS - The size of destination buffer and the size of scratch buffer are successfully retrieved.
|
||
|
EFI_INVALID_PARAMETER - The source data is corrupted
|
||
|
|
||
|
--*/
|
||
|
{
|
||
|
return GetInfo (Source, SrcSize, DstSize, ScratchSize);
|
||
|
}
|
||
|
|
||
|
EFI_STATUS
|
||
|
TianoGetInfo (
|
||
|
IN VOID *Source,
|
||
|
IN UINT32 SrcSize,
|
||
|
OUT UINT32 *DstSize,
|
||
|
OUT UINT32 *ScratchSize
|
||
|
)
|
||
|
/*++
|
||
|
|
||
|
Routine Description:
|
||
|
|
||
|
The implementation Tiano Decompress GetInfo().
|
||
|
|
||
|
Arguments:
|
||
|
|
||
|
Source - The source buffer containing the compressed data.
|
||
|
SrcSize - The size of source buffer
|
||
|
DstSize - The size of destination buffer.
|
||
|
ScratchSize - The size of scratch buffer.
|
||
|
|
||
|
Returns:
|
||
|
|
||
|
EFI_SUCCESS - The size of destination buffer and the size of scratch buffer are successfully retrieved.
|
||
|
EFI_INVALID_PARAMETER - The source data is corrupted
|
||
|
|
||
|
--*/
|
||
|
{
|
||
|
return GetInfo (Source, SrcSize, DstSize, ScratchSize);
|
||
|
}
|
||
|
|
||
|
EFI_STATUS
|
||
|
EfiDecompress (
|
||
|
IN VOID *Source,
|
||
|
IN UINT32 SrcSize,
|
||
|
IN OUT VOID *Destination,
|
||
|
IN UINT32 DstSize,
|
||
|
IN OUT VOID *Scratch,
|
||
|
IN UINT32 ScratchSize
|
||
|
)
|
||
|
/*++
|
||
|
|
||
|
Routine Description:
|
||
|
|
||
|
The implementation of Efi Decompress().
|
||
|
|
||
|
Arguments:
|
||
|
|
||
|
Source - The source buffer containing the compressed data.
|
||
|
SrcSize - The size of source buffer
|
||
|
Destination - The destination buffer to store the decompressed data
|
||
|
DstSize - The size of destination buffer.
|
||
|
Scratch - The buffer used internally by the decompress routine. This buffer is needed to store intermediate data.
|
||
|
ScratchSize - The size of scratch buffer.
|
||
|
|
||
|
Returns:
|
||
|
|
||
|
EFI_SUCCESS - Decompression is successful
|
||
|
EFI_INVALID_PARAMETER - The source data is corrupted
|
||
|
|
||
|
--*/
|
||
|
{
|
||
|
mPbit = EFIPBIT;
|
||
|
return Decompress (Source, SrcSize, Destination, DstSize, Scratch, ScratchSize);
|
||
|
}
|
||
|
|
||
|
EFI_STATUS
|
||
|
TianoDecompress (
|
||
|
IN VOID *Source,
|
||
|
IN UINT32 SrcSize,
|
||
|
IN OUT VOID *Destination,
|
||
|
IN UINT32 DstSize,
|
||
|
IN OUT VOID *Scratch,
|
||
|
IN UINT32 ScratchSize
|
||
|
)
|
||
|
/*++
|
||
|
|
||
|
Routine Description:
|
||
|
|
||
|
The implementation of Tiano Decompress().
|
||
|
|
||
|
Arguments:
|
||
|
|
||
|
Source - The source buffer containing the compressed data.
|
||
|
SrcSize - The size of source buffer
|
||
|
Destination - The destination buffer to store the decompressed data
|
||
|
DstSize - The size of destination buffer.
|
||
|
Scratch - The buffer used internally by the decompress routine. This buffer is needed to store intermediate data.
|
||
|
ScratchSize - The size of scratch buffer.
|
||
|
|
||
|
Returns:
|
||
|
|
||
|
EFI_SUCCESS - Decompression is successful
|
||
|
EFI_INVALID_PARAMETER - The source data is corrupted
|
||
|
|
||
|
--*/
|
||
|
{
|
||
|
mPbit = MAXPBIT;
|
||
|
return Decompress (Source, SrcSize, Destination, DstSize, Scratch, ScratchSize);
|
||
|
}
|
||
|
|
||
|
EFI_STATUS
|
||
|
Extract (
|
||
|
IN VOID *Source,
|
||
|
IN UINT32 SrcSize,
|
||
|
OUT VOID **Destination,
|
||
|
OUT UINT32 *DstSize,
|
||
|
IN UINTN Algorithm
|
||
|
)
|
||
|
{
|
||
|
VOID *Scratch;
|
||
|
UINT32 ScratchSize;
|
||
|
EFI_STATUS Status;
|
||
|
|
||
|
Scratch = NULL;
|
||
|
Status = EFI_SUCCESS;
|
||
|
|
||
|
switch (Algorithm) {
|
||
|
case 0:
|
||
|
*Destination = (VOID *)malloc(SrcSize);
|
||
|
if (*Destination != NULL) {
|
||
|
memcpy(*Destination, Source, SrcSize);
|
||
|
} else {
|
||
|
Status = EFI_OUT_OF_RESOURCES;
|
||
|
}
|
||
|
break;
|
||
|
case 1:
|
||
|
Status = EfiGetInfo(Source, SrcSize, DstSize, &ScratchSize);
|
||
|
if (Status == EFI_SUCCESS) {
|
||
|
Scratch = (VOID *)malloc(ScratchSize);
|
||
|
if (Scratch == NULL) {
|
||
|
return EFI_OUT_OF_RESOURCES;
|
||
|
}
|
||
|
|
||
|
*Destination = (VOID *)malloc(*DstSize);
|
||
|
if (*Destination == NULL) {
|
||
|
free (Scratch);
|
||
|
return EFI_OUT_OF_RESOURCES;
|
||
|
}
|
||
|
|
||
|
Status = EfiDecompress(Source, SrcSize, *Destination, *DstSize, Scratch, ScratchSize);
|
||
|
}
|
||
|
break;
|
||
|
case 2:
|
||
|
Status = TianoGetInfo(Source, SrcSize, DstSize, &ScratchSize);
|
||
|
if (Status == EFI_SUCCESS) {
|
||
|
Scratch = (VOID *)malloc(ScratchSize);
|
||
|
if (Scratch == NULL) {
|
||
|
return EFI_OUT_OF_RESOURCES;
|
||
|
}
|
||
|
|
||
|
*Destination = (VOID *)malloc(*DstSize);
|
||
|
if (*Destination == NULL) {
|
||
|
free (Scratch);
|
||
|
return EFI_OUT_OF_RESOURCES;
|
||
|
}
|
||
|
|
||
|
Status = TianoDecompress(Source, SrcSize, *Destination, *DstSize, Scratch, ScratchSize);
|
||
|
}
|
||
|
break;
|
||
|
default:
|
||
|
Status = EFI_INVALID_PARAMETER;
|
||
|
}
|
||
|
|
||
|
if (Scratch != NULL) {
|
||
|
free (Scratch);
|
||
|
}
|
||
|
|
||
|
return Status;
|
||
|
}
|
||
|
|
||
|
|