target/linux/rdc/patches-2.6.25/600-x86_lzma.patch

   1 --- /dev/null
   2 +++ b/arch/x86/boot/compressed/LzmaDecode.c
   3 @@ -0,0 +1,586 @@
   4 +/*
   5 +  LzmaDecode.c
   6 +  LZMA Decoder (optimized for Speed version)
   7 +
   8 +  LZMA SDK 4.17 Copyright (c) 1999-2005 Igor Pavlov (2005-04-05)
   9 +  http://www.7-zip.org/
  10 +
  11 +  LZMA SDK is licensed under two licenses:
  12 +  1) GNU Lesser General Public License (GNU LGPL)
  13 +  2) Common Public License (CPL)
  14 +  It means that you can select one of these two licenses and
  15 +  follow rules of that license.
  16 +
  17 +  SPECIAL EXCEPTION:
  18 +  Igor Pavlov, as the author of this Code, expressly permits you to
  19 +  statically or dynamically link your Code (or bind by name) to the
  20 +  interfaces of this file without subjecting your linked Code to the
  21 +  terms of the CPL or GNU LGPL. Any modifications or additions
  22 +  to this file, however, are subject to the LGPL or CPL terms.
  23 +*/
  24 +
  25 +#include "LzmaDecode.h"
  26 +
  27 +#ifndef Byte
  28 +#define Byte unsigned char
  29 +#endif
  30 +
  31 +#define kNumTopBits 24
  32 +#define kTopValue ((UInt32)1 << kNumTopBits)
  33 +
  34 +#define kNumBitModelTotalBits 11
  35 +#define kBitModelTotal (1 << kNumBitModelTotalBits)
  36 +#define kNumMoveBits 5
  37 +
  38 +#define RC_READ_BYTE (*Buffer++)
  39 +
  40 +#define RC_INIT2 Code = 0; Range = 0xFFFFFFFF; \
  41 +  { int i; for(i = 0; i < 5; i++) { RC_TEST; Code = (Code << 8) | RC_READ_BYTE; }}
  42 +
  43 +#ifdef _LZMA_IN_CB
  44 +
  45 +#define RC_TEST { if (Buffer == BufferLim) \
  46 +  { UInt32 size; int result = InCallback->Read(InCallback, &Buffer, &size); if (result != LZMA_RESULT_OK) return result; \
  47 +  BufferLim = Buffer + size; if (size == 0) return LZMA_RESULT_DATA_ERROR; }}
  48 +
  49 +#define RC_INIT Buffer = BufferLim = 0; RC_INIT2
  50 +
  51 +#else
  52 +
  53 +#define RC_TEST { if (Buffer == BufferLim) return LZMA_RESULT_DATA_ERROR; }
  54 +
  55 +#define RC_INIT(buffer, bufferSize) Buffer = buffer; BufferLim = buffer + bufferSize; RC_INIT2
  56 +
  57 +#endif
  58 +
  59 +#define RC_NORMALIZE if (Range < kTopValue) { RC_TEST; Range <<= 8; Code = (Code << 8) | RC_READ_BYTE; }
  60 +
  61 +#define IfBit0(p) RC_NORMALIZE; bound = (Range >> kNumBitModelTotalBits) * *(p); if (Code < bound)
  62 +#define UpdateBit0(p) Range = bound; *(p) += (kBitModelTotal - *(p)) >> kNumMoveBits;
  63 +#define UpdateBit1(p) Range -= bound; Code -= bound; *(p) -= (*(p)) >> kNumMoveBits;
  64 +
  65 +#define RC_GET_BIT2(p, mi, A0, A1) IfBit0(p) \
  66 +  { UpdateBit0(p); mi <<= 1; A0; } else \
  67 +  { UpdateBit1(p); mi = (mi + mi) + 1; A1; }
  68 +
  69 +#define RC_GET_BIT(p, mi) RC_GET_BIT2(p, mi, ; , ;)
  70 +
  71 +#define RangeDecoderBitTreeDecode(probs, numLevels, res) \
  72 +  { int i = numLevels; res = 1; \
  73 +  do { CProb *p = probs + res; RC_GET_BIT(p, res) } while(--i != 0); \
  74 +  res -= (1 << numLevels); }
  75 +
  76 +
  77 +#define kNumPosBitsMax 4
  78 +#define kNumPosStatesMax (1 << kNumPosBitsMax)
  79 +
  80 +#define kLenNumLowBits 3
  81 +#define kLenNumLowSymbols (1 << kLenNumLowBits)
  82 +#define kLenNumMidBits 3
  83 +#define kLenNumMidSymbols (1 << kLenNumMidBits)
  84 +#define kLenNumHighBits 8
  85 +#define kLenNumHighSymbols (1 << kLenNumHighBits)
  86 +
  87 +#define LenChoice 0
  88 +#define LenChoice2 (LenChoice + 1)
  89 +#define LenLow (LenChoice2 + 1)
  90 +#define LenMid (LenLow + (kNumPosStatesMax << kLenNumLowBits))
  91 +#define LenHigh (LenMid + (kNumPosStatesMax << kLenNumMidBits))
  92 +#define kNumLenProbs (LenHigh + kLenNumHighSymbols)
  93 +
  94 +
  95 +#define kNumStates 12
  96 +#define kNumLitStates 7
  97 +
  98 +#define kStartPosModelIndex 4
  99 +#define kEndPosModelIndex 14
 100 +#define kNumFullDistances (1 << (kEndPosModelIndex >> 1))
 101 +
 102 +#define kNumPosSlotBits 6
 103 +#define kNumLenToPosStates 4
 104 +
 105 +#define kNumAlignBits 4
 106 +#define kAlignTableSize (1 << kNumAlignBits)
 107 +
 108 +#define kMatchMinLen 2
 109 +
 110 +#define IsMatch 0
 111 +#define IsRep (IsMatch + (kNumStates << kNumPosBitsMax))
 112 +#define IsRepG0 (IsRep + kNumStates)
 113 +#define IsRepG1 (IsRepG0 + kNumStates)
 114 +#define IsRepG2 (IsRepG1 + kNumStates)
 115 +#define IsRep0Long (IsRepG2 + kNumStates)
 116 +#define PosSlot (IsRep0Long + (kNumStates << kNumPosBitsMax))
 117 +#define SpecPos (PosSlot + (kNumLenToPosStates << kNumPosSlotBits))
 118 +#define Align (SpecPos + kNumFullDistances - kEndPosModelIndex)
 119 +#define LenCoder (Align + kAlignTableSize)
 120 +#define RepLenCoder (LenCoder + kNumLenProbs)
 121 +#define Literal (RepLenCoder + kNumLenProbs)
 122 +
 123 +#if Literal != LZMA_BASE_SIZE
 124 +StopCompilingDueBUG
 125 +#endif
 126 +
 127 +#ifdef _LZMA_OUT_READ
 128 +
 129 +typedef struct _LzmaVarState
 130 +{
 131 +  Byte *Buffer;
 132 +  Byte *BufferLim;
 133 +  UInt32 Range;
 134 +  UInt32 Code;
 135 +  #ifdef _LZMA_IN_CB
 136 +  ILzmaInCallback *InCallback;
 137 +  #endif
 138 +  Byte *Dictionary;
 139 +  UInt32 DictionarySize;
 140 +  UInt32 DictionaryPos;
 141 +  UInt32 GlobalPos;
 142 +  UInt32 Reps[4];
 143 +  int lc;
 144 +  int lp;
 145 +  int pb;
 146 +  int State;
 147 +  int RemainLen;
 148 +  Byte TempDictionary[4];
 149 +} LzmaVarState;
 150 +
 151 +int LzmaDecoderInit(
 152 +    unsigned char *buffer, UInt32 bufferSize,
 153 +    int lc, int lp, int pb,
 154 +    unsigned char *dictionary, UInt32 dictionarySize,
 155 +    #ifdef _LZMA_IN_CB
 156 +    ILzmaInCallback *InCallback
 157 +    #else
 158 +    unsigned char *inStream, UInt32 inSize
 159 +    #endif
 160 +    )
 161 +{
 162 +  Byte *Buffer;
 163 +  Byte *BufferLim;
 164 +  UInt32 Range;
 165 +  UInt32 Code;
 166 +  LzmaVarState *vs = (LzmaVarState *)buffer;
 167 +  CProb *p = (CProb *)(buffer + sizeof(LzmaVarState));
 168 +  UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + lp));
 169 +  UInt32 i;
 170 +  if (bufferSize < numProbs * sizeof(CProb) + sizeof(LzmaVarState))
 171 +    return LZMA_RESULT_NOT_ENOUGH_MEM;
 172 +  vs->Dictionary = dictionary;
 173 +  vs->DictionarySize = dictionarySize;
 174 +  vs->DictionaryPos = 0;
 175 +  vs->GlobalPos = 0;
 176 +  vs->Reps[0] = vs->Reps[1] = vs->Reps[2] = vs->Reps[3] = 1;
 177 +  vs->lc = lc;
 178 +  vs->lp = lp;
 179 +  vs->pb = pb;
 180 +  vs->State = 0;
 181 +  vs->RemainLen = 0;
 182 +  dictionary[dictionarySize - 1] = 0;
 183 +  for (i = 0; i < numProbs; i++)
 184 +    p[i] = kBitModelTotal >> 1;
 185 +
 186 +  #ifdef _LZMA_IN_CB
 187 +  RC_INIT;
 188 +  #else
 189 +  RC_INIT(inStream, inSize);
 190 +  #endif
 191 +  vs->Buffer = Buffer;
 192 +  vs->BufferLim = BufferLim;
 193 +  vs->Range = Range;
 194 +  vs->Code = Code;
 195 +  #ifdef _LZMA_IN_CB
 196 +  vs->InCallback = InCallback;
 197 +  #endif
 198 +
 199 +  return LZMA_RESULT_OK;
 200 +}
 201 +
 202 +int LzmaDecode(unsigned char *buffer,
 203 +    unsigned char *outStream, UInt32 outSize,
 204 +    UInt32 *outSizeProcessed)
 205 +{
 206 +  LzmaVarState *vs = (LzmaVarState *)buffer;
 207 +  Byte *Buffer = vs->Buffer;
 208 +  Byte *BufferLim = vs->BufferLim;
 209 +  UInt32 Range = vs->Range;
 210 +  UInt32 Code = vs->Code;
 211 +  #ifdef _LZMA_IN_CB
 212 +  ILzmaInCallback *InCallback = vs->InCallback;
 213 +  #endif
 214 +  CProb *p = (CProb *)(buffer + sizeof(LzmaVarState));
 215 +  int state = vs->State;
 216 +  Byte previousByte;
 217 +  UInt32 rep0 = vs->Reps[0], rep1 = vs->Reps[1], rep2 = vs->Reps[2], rep3 = vs->Reps[3];
 218 +  UInt32 nowPos = 0;
 219 +  UInt32 posStateMask = (1 << (vs->pb)) - 1;
 220 +  UInt32 literalPosMask = (1 << (vs->lp)) - 1;
 221 +  int lc = vs->lc;
 222 +  int len = vs->RemainLen;
 223 +  UInt32 globalPos = vs->GlobalPos;
 224 +
 225 +  Byte *dictionary = vs->Dictionary;
 226 +  UInt32 dictionarySize = vs->DictionarySize;
 227 +  UInt32 dictionaryPos = vs->DictionaryPos;
 228 +
 229 +  Byte tempDictionary[4];
 230 +  if (dictionarySize == 0)
 231 +  {
 232 +    dictionary = tempDictionary;
 233 +    dictionarySize = 1;
 234 +    tempDictionary[0] = vs->TempDictionary[0];
 235 +  }
 236 +
 237 +  if (len == -1)
 238 +  {
 239 +    *outSizeProcessed = 0;
 240 +    return LZMA_RESULT_OK;
 241 +  }
 242 +
 243 +  while(len != 0 && nowPos < outSize)
 244 +  {
 245 +    UInt32 pos = dictionaryPos - rep0;
 246 +    if (pos >= dictionarySize)
 247 +      pos += dictionarySize;
 248 +    outStream[nowPos++] = dictionary[dictionaryPos] = dictionary[pos];
 249 +    if (++dictionaryPos == dictionarySize)
 250 +      dictionaryPos = 0;
 251 +    len--;
 252 +  }
 253 +  if (dictionaryPos == 0)
 254 +    previousByte = dictionary[dictionarySize - 1];
 255 +  else
 256 +    previousByte = dictionary[dictionaryPos - 1];
 257 +#else
 258 +
 259 +int LzmaDecode(
 260 +    Byte *buffer, UInt32 bufferSize,
 261 +    int lc, int lp, int pb,
 262 +    #ifdef _LZMA_IN_CB
 263 +    ILzmaInCallback *InCallback,
 264 +    #else
 265 +    unsigned char *inStream, UInt32 inSize,
 266 +    #endif
 267 +    unsigned char *outStream, UInt32 outSize,
 268 +    UInt32 *outSizeProcessed)
 269 +{
 270 +  UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + lp));
 271 +  CProb *p = (CProb *)buffer;
 272 +
 273 +  UInt32 i;
 274 +  int state = 0;
 275 +  Byte previousByte = 0;
 276 +  UInt32 rep0 = 1, rep1 = 1, rep2 = 1, rep3 = 1;
 277 +  UInt32 nowPos = 0;
 278 +  UInt32 posStateMask = (1 << pb) - 1;
 279 +  UInt32 literalPosMask = (1 << lp) - 1;
 280 +  int len = 0;
 281 +
 282 +  Byte *Buffer;
 283 +  Byte *BufferLim;
 284 +  UInt32 Range;
 285 +  UInt32 Code;
 286 +
 287 +  if (bufferSize < numProbs * sizeof(CProb))
 288 +    return LZMA_RESULT_NOT_ENOUGH_MEM;
 289 +  for (i = 0; i < numProbs; i++)
 290 +    p[i] = kBitModelTotal >> 1;
 291 +
 292 +
 293 +  #ifdef _LZMA_IN_CB
 294 +  RC_INIT;
 295 +  #else
 296 +  RC_INIT(inStream, inSize);
 297 +  #endif
 298 +#endif
 299 +
 300 +  *outSizeProcessed = 0;
 301 +  while(nowPos < outSize)
 302 +  {
 303 +    CProb *prob;
 304 +    UInt32 bound;
 305 +    int posState = (int)(
 306 +        (nowPos
 307 +        #ifdef _LZMA_OUT_READ
 308 +        + globalPos
 309 +        #endif
 310 +        )
 311 +        & posStateMask);
 312 +
 313 +    prob = p + IsMatch + (state << kNumPosBitsMax) + posState;
 314 +    IfBit0(prob)
 315 +    {
 316 +      int symbol = 1;
 317 +      UpdateBit0(prob)
 318 +      prob = p + Literal + (LZMA_LIT_SIZE *
 319 +        (((
 320 +        (nowPos
 321 +        #ifdef _LZMA_OUT_READ
 322 +        + globalPos
 323 +        #endif
 324 +        )
 325 +        & literalPosMask) << lc) + (previousByte >> (8 - lc))));
 326 +
 327 +      if (state >= kNumLitStates)
 328 +      {
 329 +        int matchByte;
 330 +        #ifdef _LZMA_OUT_READ
 331 +        UInt32 pos = dictionaryPos - rep0;
 332 +        if (pos >= dictionarySize)
 333 +          pos += dictionarySize;
 334 +        matchByte = dictionary[pos];
 335 +        #else
 336 +        matchByte = outStream[nowPos - rep0];
 337 +        #endif
 338 +        do
 339 +        {
 340 +          int bit;
 341 +          CProb *probLit;
 342 +          matchByte <<= 1;
 343 +          bit = (matchByte & 0x100);
 344 +          probLit = prob + 0x100 + bit + symbol;
 345 +          RC_GET_BIT2(probLit, symbol, if (bit != 0) break, if (bit == 0) break)
 346 +        }
 347 +        while (symbol < 0x100);
 348 +      }
 349 +      while (symbol < 0x100)
 350 +      {
 351 +        CProb *probLit = prob + symbol;
 352 +        RC_GET_BIT(probLit, symbol)
 353 +      }
 354 +      previousByte = (Byte)symbol;
 355 +
 356 +      outStream[nowPos++] = previousByte;
 357 +      #ifdef _LZMA_OUT_READ
 358 +      dictionary[dictionaryPos] = previousByte;
 359 +      if (++dictionaryPos == dictionarySize)
 360 +        dictionaryPos = 0;
 361 +      #endif
 362 +      if (state < 4) state = 0;
 363 +      else if (state < 10) state -= 3;
 364 +      else state -= 6;
 365 +    }
 366 +    else
 367 +    {
 368 +      UpdateBit1(prob);
 369 +      prob = p + IsRep + state;
 370 +      IfBit0(prob)
 371 +      {
 372 +        UpdateBit0(prob);
 373 +        rep3 = rep2;
 374 +        rep2 = rep1;
 375 +        rep1 = rep0;
 376 +        state = state < kNumLitStates ? 0 : 3;
 377 +        prob = p + LenCoder;
 378 +      }
 379 +      else
 380 +      {
 381 +        UpdateBit1(prob);
 382 +        prob = p + IsRepG0 + state;
 383 +        IfBit0(prob)
 384 +        {
 385 +          UpdateBit0(prob);
 386 +          prob = p + IsRep0Long + (state << kNumPosBitsMax) + posState;
 387 +          IfBit0(prob)
 388 +          {
 389 +            #ifdef _LZMA_OUT_READ
 390 +            UInt32 pos;
 391 +            #endif
 392 +            UpdateBit0(prob);
 393 +            if (nowPos
 394 +                #ifdef _LZMA_OUT_READ
 395 +                + globalPos
 396 +                #endif
 397 +                == 0)
 398 +              return LZMA_RESULT_DATA_ERROR;
 399 +            state = state < kNumLitStates ? 9 : 11;
 400 +            #ifdef _LZMA_OUT_READ
 401 +            pos = dictionaryPos - rep0;
 402 +            if (pos >= dictionarySize)
 403 +              pos += dictionarySize;
 404 +            previousByte = dictionary[pos];
 405 +            dictionary[dictionaryPos] = previousByte;
 406 +            if (++dictionaryPos == dictionarySize)
 407 +              dictionaryPos = 0;
 408 +            #else
 409 +            previousByte = outStream[nowPos - rep0];
 410 +            #endif
 411 +            outStream[nowPos++] = previousByte;
 412 +            continue;
 413 +          }
 414 +          else
 415 +          {
 416 +            UpdateBit1(prob);
 417 +          }
 418 +        }
 419 +        else
 420 +        {
 421 +          UInt32 distance;
 422 +          UpdateBit1(prob);
 423 +          prob = p + IsRepG1 + state;
 424 +          IfBit0(prob)
 425 +          {
 426 +            UpdateBit0(prob);
 427 +            distance = rep1;
 428 +          }
 429 +          else
 430 +          {
 431 +            UpdateBit1(prob);
 432 +            prob = p + IsRepG2 + state;
 433 +            IfBit0(prob)
 434 +            {
 435 +              UpdateBit0(prob);
 436 +              distance = rep2;
 437 +            }
 438 +            else
 439 +            {
 440 +              UpdateBit1(prob);
 441 +              distance = rep3;
 442 +              rep3 = rep2;
 443 +            }
 444 +            rep2 = rep1;
 445 +          }
 446 +          rep1 = rep0;
 447 +          rep0 = distance;
 448 +        }
 449 +        state = state < kNumLitStates ? 8 : 11;
 450 +        prob = p + RepLenCoder;
 451 +      }
 452 +      {
 453 +        int numBits, offset;
 454 +        CProb *probLen = prob + LenChoice;
 455 +        IfBit0(probLen)
 456 +        {
 457 +          UpdateBit0(probLen);
 458 +          probLen = prob + LenLow + (posState << kLenNumLowBits);
 459 +          offset = 0;
 460 +          numBits = kLenNumLowBits;
 461 +        }
 462 +        else
 463 +        {
 464 +          UpdateBit1(probLen);
 465 +          probLen = prob + LenChoice2;
 466 +          IfBit0(probLen)
 467 +          {
 468 +            UpdateBit0(probLen);
 469 +            probLen = prob + LenMid + (posState << kLenNumMidBits);
 470 +            offset = kLenNumLowSymbols;
 471 +            numBits = kLenNumMidBits;
 472 +          }
 473 +          else
 474 +          {
 475 +            UpdateBit1(probLen);
 476 +            probLen = prob + LenHigh;
 477 +            offset = kLenNumLowSymbols + kLenNumMidSymbols;
 478 +            numBits = kLenNumHighBits;
 479 +          }
 480 +        }
 481 +        RangeDecoderBitTreeDecode(probLen, numBits, len);
 482 +        len += offset;
 483 +      }
 484 +
 485 +      if (state < 4)
 486 +      {
 487 +        int posSlot;
 488 +        state += kNumLitStates;
 489 +        prob = p + PosSlot +
 490 +            ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) <<
 491 +            kNumPosSlotBits);
 492 +        RangeDecoderBitTreeDecode(prob, kNumPosSlotBits, posSlot);
 493 +        if (posSlot >= kStartPosModelIndex)
 494 +        {
 495 +          int numDirectBits = ((posSlot >> 1) - 1);
 496 +          rep0 = (2 | ((UInt32)posSlot & 1));
 497 +          if (posSlot < kEndPosModelIndex)
 498 +          {
 499 +            rep0 <<= numDirectBits;
 500 +            prob = p + SpecPos + rep0 - posSlot - 1;
 501 +          }
 502 +          else
 503 +          {
 504 +            numDirectBits -= kNumAlignBits;
 505 +            do
 506 +            {
 507 +              RC_NORMALIZE
 508 +              Range >>= 1;
 509 +              rep0 <<= 1;
 510 +              if (Code >= Range)
 511 +              {
 512 +                Code -= Range;
 513 +                rep0 |= 1;
 514 +              }
 515 +            }
 516 +            while (--numDirectBits != 0);
 517 +            prob = p + Align;
 518 +            rep0 <<= kNumAlignBits;
 519 +            numDirectBits = kNumAlignBits;
 520 +          }
 521 +          {
 522 +            int i = 1;
 523 +            int mi = 1;
 524 +            do
 525 +            {
 526 +              CProb *prob3 = prob + mi;
 527 +              RC_GET_BIT2(prob3, mi, ; , rep0 |= i);
 528 +              i <<= 1;
 529 +            }
 530 +            while(--numDirectBits != 0);
 531 +          }
 532 +        }
 533 +        else
 534 +          rep0 = posSlot;
 535 +        if (++rep0 == (UInt32)(0))
 536 +        {
 537 +          /* it's for stream version */
 538 +          len = -1;
 539 +          break;
 540 +        }
 541 +      }
 542 +
 543 +      len += kMatchMinLen;
 544 +      if (rep0 > nowPos
 545 +        #ifdef _LZMA_OUT_READ
 546 +        + globalPos || rep0 > dictionarySize
 547 +        #endif
 548 +        )
 549 +        return LZMA_RESULT_DATA_ERROR;
 550 +      do
 551 +      {
 552 +        #ifdef _LZMA_OUT_READ
 553 +        UInt32 pos = dictionaryPos - rep0;
 554 +        if (pos >= dictionarySize)
 555 +          pos += dictionarySize;
 556 +        previousByte = dictionary[pos];
 557 +        dictionary[dictionaryPos] = previousByte;
 558 +        if (++dictionaryPos == dictionarySize)
 559 +          dictionaryPos = 0;
 560 +        #else
 561 +        previousByte = outStream[nowPos - rep0];
 562 +        #endif
 563 +        len--;
 564 +        outStream[nowPos++] = previousByte;
 565 +      }
 566 +      while(len != 0 && nowPos < outSize);
 567 +    }
 568 +  }
 569 +  RC_NORMALIZE;
 570 +
 571 +  #ifdef _LZMA_OUT_READ
 572 +  vs->Buffer = Buffer;
 573 +  vs->BufferLim = BufferLim;
 574 +  vs->Range = Range;
 575 +  vs->Code = Code;
 576 +  vs->DictionaryPos = dictionaryPos;
 577 +  vs->GlobalPos = globalPos + nowPos;
 578 +  vs->Reps[0] = rep0;
 579 +  vs->Reps[1] = rep1;
 580 +  vs->Reps[2] = rep2;
 581 +  vs->Reps[3] = rep3;
 582 +  vs->State = state;
 583 +  vs->RemainLen = len;
 584 +  vs->TempDictionary[0] = tempDictionary[0];
 585 +  #endif
 586 +
 587 +  *outSizeProcessed = nowPos;
 588 +  return LZMA_RESULT_OK;
 589 +}
 590 --- /dev/null
 591 +++ b/arch/x86/boot/compressed/LzmaDecode.h
 592 @@ -0,0 +1,100 @@
 593 +/*
 594 +  LzmaDecode.h
 595 +  LZMA Decoder interface
 596 +
 597 +  LZMA SDK 4.16 Copyright (c) 1999-2005 Igor Pavlov (2005-03-18)
 598 +  http://www.7-zip.org/
 599 +
 600 +  LZMA SDK is licensed under two licenses:
 601 +  1) GNU Lesser General Public License (GNU LGPL)
 602 +  2) Common Public License (CPL)
 603 +  It means that you can select one of these two licenses and
 604 +  follow rules of that license.
 605 +
 606 +  SPECIAL EXCEPTION:
 607 +  Igor Pavlov, as the author of this code, expressly permits you to
 608 +  statically or dynamically link your code (or bind by name) to the
 609 +  interfaces of this file without subjecting your linked code to the
 610 +  terms of the CPL or GNU LGPL. Any modifications or additions
 611 +  to this file, however, are subject to the LGPL or CPL terms.
 612 +*/
 613 +
 614 +#ifndef __LZMADECODE_H
 615 +#define __LZMADECODE_H
 616 +
 617 +/* #define _LZMA_IN_CB */
 618 +/* Use callback for input data */
 619 +
 620 +/* #define _LZMA_OUT_READ */
 621 +/* Use read function for output data */
 622 +
 623 +/* #define _LZMA_PROB32 */
 624 +/* It can increase speed on some 32-bit CPUs,
 625 +   but memory usage will be doubled in that case */
 626 +
 627 +/* #define _LZMA_LOC_OPT */
 628 +/* Enable local speed optimizations inside code */
 629 +
 630 +#ifndef UInt32
 631 +#ifdef _LZMA_UINT32_IS_ULONG
 632 +#define UInt32 unsigned long
 633 +#else
 634 +#define UInt32 unsigned int
 635 +#endif
 636 +#endif
 637 +
 638 +#ifdef _LZMA_PROB32
 639 +#define CProb UInt32
 640 +#else
 641 +#define CProb unsigned short
 642 +#endif
 643 +
 644 +#define LZMA_RESULT_OK 0
 645 +#define LZMA_RESULT_DATA_ERROR 1
 646 +#define LZMA_RESULT_NOT_ENOUGH_MEM 2
 647 +
 648 +#ifdef _LZMA_IN_CB
 649 +typedef struct _ILzmaInCallback
 650 +{
 651 +  int (*Read)(void *object, unsigned char **buffer, UInt32 *bufferSize);
 652 +} ILzmaInCallback;
 653 +#endif
 654 +
 655 +#define LZMA_BASE_SIZE 1846
 656 +#define LZMA_LIT_SIZE 768
 657 +
 658 +/*
 659 +bufferSize = (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << (lc + lp)))* sizeof(CProb)
 660 +bufferSize += 100 in case of _LZMA_OUT_READ
 661 +by default CProb is unsigned short,
 662 +but if specify _LZMA_PROB_32, CProb will be UInt32(unsigned int)
 663 +*/
 664 +
 665 +#ifdef _LZMA_OUT_READ
 666 +int LzmaDecoderInit(
 667 +    unsigned char *buffer, UInt32 bufferSize,
 668 +    int lc, int lp, int pb,
 669 +    unsigned char *dictionary, UInt32 dictionarySize,
 670 +  #ifdef _LZMA_IN_CB
 671 +    ILzmaInCallback *inCallback
 672 +  #else
 673 +    unsigned char *inStream, UInt32 inSize
 674 +  #endif
 675 +);
 676 +#endif
 677 +
 678 +int LzmaDecode(
 679 +    unsigned char *buffer,
 680 +  #ifndef _LZMA_OUT_READ
 681 +    UInt32 bufferSize,
 682 +    int lc, int lp, int pb,
 683 +  #ifdef _LZMA_IN_CB
 684 +    ILzmaInCallback *inCallback,
 685 +  #else
 686 +    unsigned char *inStream, UInt32 inSize,
 687 +  #endif
 688 +  #endif
 689 +    unsigned char *outStream, UInt32 outSize,
 690 +    UInt32 *outSizeProcessed);
 691 +
 692 +#endif
 693 --- /dev/null
 694 +++ b/arch/x86/boot/compressed/lzma_misc.c
 695 @@ -0,0 +1,281 @@
 696 +/*
 697 + * lzma_misc.c
 698 + *
 699 + * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994
 700 + * puts by Nick Holloway 1993, better puts by Martin Mares 1995
 701 + * High loaded stuff by Hans Lermen & Werner Almesberger, Feb. 1996
 702 + *
 703 + * Decompress LZMA compressed vmlinuz
 704 + * Version 0.9 Copyright (c) Ming-Ching Tiew mctiew@yahoo.com
 705 + * Program adapted from misc.c for 2.6 kernel
 706 + * Forward ported to latest 2.6 version of misc.c by
 707 + * Felix Fietkau <nbd@openwrt.org>
 708 + */
 709 +
 710 +#undef CONFIG_PARAVIRT
 711 +#include <linux/linkage.h>
 712 +#include <linux/vmalloc.h>
 713 +#include <linux/screen_info.h>
 714 +#include <asm/io.h>
 715 +#include <asm/page.h>
 716 +#include <asm/boot.h>
 717 +
 718 +/* WARNING!!
 719 + * This code is compiled with -fPIC and it is relocated dynamically
 720 + * at run time, but no relocation processing is performed.
 721 + * This means that it is not safe to place pointers in static structures.
 722 + */
 723 +
 724 +/*
 725 + * Getting to provable safe in place decompression is hard.
 726 + * Worst case behaviours need to be analized.
 727 + * Background information:
 728 + *
 729 + * The file layout is:
 730 + *    magic[2]
 731 + *    method[1]
 732 + *    flags[1]
 733 + *    timestamp[4]
 734 + *    extraflags[1]
 735 + *    os[1]
 736 + *    compressed data blocks[N]
 737 + *    crc[4] orig_len[4]
 738 + *
 739 + * resulting in 18 bytes of non compressed data overhead.
 740 + *
 741 + * Files divided into blocks
 742 + * 1 bit (last block flag)
 743 + * 2 bits (block type)
 744 + *
 745 + * 1 block occurs every 32K -1 bytes or when there 50% compression has been achieved.
 746 + * The smallest block type encoding is always used.
 747 + *
 748 + * stored:
 749 + *    32 bits length in bytes.
 750 + *
 751 + * fixed:
 752 + *    magic fixed tree.
 753 + *    symbols.
 754 + *
 755 + * dynamic:
 756 + *    dynamic tree encoding.
 757 + *    symbols.
 758 + *
 759 + *
 760 + * The buffer for decompression in place is the length of the
 761 + * uncompressed data, plus a small amount extra to keep the algorithm safe.
 762 + * The compressed data is placed at the end of the buffer.  The output
 763 + * pointer is placed at the start of the buffer and the input pointer
 764 + * is placed where the compressed data starts.  Problems will occur
 765 + * when the output pointer overruns the input pointer.
 766 + *
 767 + * The output pointer can only overrun the input pointer if the input
 768 + * pointer is moving faster than the output pointer.  A condition only
 769 + * triggered by data whose compressed form is larger than the uncompressed
 770 + * form.
 771 + *
 772 + * The worst case at the block level is a growth of the compressed data
 773 + * of 5 bytes per 32767 bytes.
 774 + *
 775 + * The worst case internal to a compressed block is very hard to figure.
 776 + * The worst case can at least be boundined by having one bit that represents
 777 + * 32764 bytes and then all of the rest of the bytes representing the very
 778 + * very last byte.
 779 + *
 780 + * All of which is enough to compute an amount of extra data that is required
 781 + * to be safe.  To avoid problems at the block level allocating 5 extra bytes
 782 + * per 32767 bytes of data is sufficient.  To avoind problems internal to a block
 783 + * adding an extra 32767 bytes (the worst case uncompressed block size) is
 784 + * sufficient, to ensure that in the worst case the decompressed data for
 785 + * block will stop the byte before the compressed data for a block begins.
 786 + * To avoid problems with the compressed data's meta information an extra 18
 787 + * bytes are needed.  Leading to the formula:
 788 + *
 789 + * extra_bytes = (uncompressed_size >> 12) + 32768 + 18 + decompressor_size.
 790 + *
 791 + * Adding 8 bytes per 32K is a bit excessive but much easier to calculate.
 792 + * Adding 32768 instead of 32767 just makes for round numbers.
 793 + * Adding the decompressor_size is necessary as it musht live after all
 794 + * of the data as well.  Last I measured the decompressor is about 14K.
 795 + * 10K of actuall data and 4K of bss.
 796 + *
 797 + */
 798 +
 799 +/*
 800 + * gzip declarations
 801 + */
 802 +
 803 +#define OF(args)  args
 804 +#define STATIC static
 805 +
 806 +#undef memcpy
 807 +
 808 +typedef unsigned char  uch;
 809 +typedef unsigned short ush;
 810 +typedef unsigned long  ulg;
 811 +
 812 +#define WSIZE 0x80000000       /* Window size must be at least 32k,
 813 +                                * and a power of two
 814 +                                * We don't actually have a window just
 815 +                                * a huge output buffer so I report
 816 +                                * a 2G windows size, as that should
 817 +                                * always be larger than our output buffer.
 818 +                                */
 819 +
 820 +static uch *inbuf;     /* input buffer */
 821 +static uch *window;    /* Sliding window buffer, (and final output buffer) */
 822 +
 823 +static unsigned insize;  /* valid bytes in inbuf */
 824 +static unsigned inptr;   /* index of next byte to be processed in inbuf */
 825 +static unsigned long workspace;
 826 +
 827 +#define get_byte()  (inptr < insize ? inbuf[inptr++] : fill_inbuf())
 828 +
 829 +/* Diagnostic functions */
 830 +#ifdef DEBUG
 831 +#  define Assert(cond,msg) {if(!(cond)) error(msg);}
 832 +#  define Trace(x) fprintf x
 833 +#  define Tracev(x) {if (verbose) fprintf x ;}
 834 +#  define Tracevv(x) {if (verbose>1) fprintf x ;}
 835 +#  define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
 836 +#  define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
 837 +#else
 838 +#  define Assert(cond,msg)
 839 +#  define Trace(x)
 840 +#  define Tracev(x)
 841 +#  define Tracevv(x)
 842 +#  define Tracec(c,x)
 843 +#  define Tracecv(c,x)
 844 +#endif
 845 +
 846 +static int  fill_inbuf(void);
 847 +
 848 +/*
 849 + * This is set up by the setup-routine at boot-time
 850 + */
 851 +static unsigned char *real_mode; /* Pointer to real-mode data */
 852 +extern unsigned char input_data[];
 853 +extern int input_len;
 854 +
 855 +static void error(char *x);
 856 +static void *memcpy(void *dest, const void *src, unsigned n);
 857 +
 858 +#ifdef CONFIG_X86_NUMAQ
 859 +void *xquad_portio;
 860 +#endif
 861 +
 862 +static void* memcpy(void* dest, const void* src, unsigned n)
 863 +{
 864 +       int i;
 865 +       char *d = (char *)dest, *s = (char *)src;
 866 +
 867 +       for (i=0;i<n;i++) d[i] = s[i];
 868 +       return dest;
 869 +}
 870 +
 871 +/* ===========================================================================
 872 + * Fill the input buffer. This is called only when the buffer is empty
 873 + * and at least one byte is really needed.
 874 + */
 875 +static int fill_inbuf(void)
 876 +{
 877 +       error("ran out of input data");
 878 +       return 0;
 879 +}
 880 +
 881 +
 882 +// When using LZMA in callback, the compressed length is not needed.
 883 +// Otherwise you need a special version of lzma compression program
 884 +// which will pad the compressed length in the header.
 885 +#define _LZMA_IN_CB
 886 +#include "LzmaDecode.h"
 887 +#include "LzmaDecode.c"
 888 +
 889 +static int read_byte(void *object, unsigned char **buffer, UInt32 *bufferSize);
 890 +
 891 +
 892 +/*
 893 + * Do the lzma decompression
 894 + * When using LZMA in callback, the end of input stream is automatically determined
 895 + */
 896 +static int lzma_unzip(void)
 897 +{
 898 +
 899 +       unsigned int i;  /* temp value */
 900 +       unsigned int lc; /* literal context bits */
 901 +       unsigned int lp; /* literal pos state bits */
 902 +       unsigned int pb; /* pos state bits */
 903 +       unsigned int uncompressedSize = 0;
 904 +       unsigned char* p;
 905 +
 906 +       ILzmaInCallback callback;
 907 +       callback.Read = read_byte;
 908 +
 909 +       /* lzma args */
 910 +       i = get_byte();
 911 +       lc = i % 9, i = i / 9;
 912 +       lp = i % 5, pb = i / 5;
 913 +
 914 +       /* skip dictionary size */
 915 +       for (i = 0; i < 4; i++)
 916 +               get_byte();
 917 +       // get uncompressedSize
 918 +       p= (char*)&uncompressedSize;
 919 +       for (i = 0; i < 4; i++)
 920 +           *p++ = get_byte();
 921 +
 922 +       //get compressedSize
 923 +       for (i = 0; i < 4; i++)
 924 +               get_byte();
 925 +
 926 +       // point it beyond uncompresedSize
 927 +       //workspace = window + uncompressedSize;
 928 +
 929 +       /* decompress kernel */
 930 +       if (LzmaDecode((unsigned char*)workspace, ~0, lc, lp, pb, &callback,
 931 +               (unsigned char*)window, uncompressedSize, &i) == LZMA_RESULT_OK)
 932 +               return 0;
 933 +       else
 934 +               return 1;
 935 +}
 936 +
 937 +
 938 +#ifdef  _LZMA_IN_CB
 939 +static int read_byte(void *object, unsigned char **buffer, UInt32 *bufferSize)
 940 +{
 941 +       static unsigned int i = 0;
 942 +       static unsigned char val;
 943 +       *bufferSize = 1;
 944 +       val = get_byte();
 945 +       *buffer = &val;
 946 +       return LZMA_RESULT_OK;
 947 +}
 948 +#endif
 949 +
 950 +static void error(char *x)
 951 +{
 952 +       while(1);       /* Halt */
 953 +}
 954 +
 955 +asmlinkage void decompress_kernel(void *rmode, unsigned long end,
 956 +                       uch *input_data, unsigned long input_len, uch *output)
 957 +{
 958 +       real_mode = rmode;
 959 +
 960 +       window = output;
 961 +       inbuf  = input_data;    /* Input buffer */
 962 +       insize = input_len;
 963 +       inptr  = 0;
 964 +
 965 +       if ((u32)output & (CONFIG_PHYSICAL_ALIGN -1))
 966 +               error("Destination address not CONFIG_PHYSICAL_ALIGN aligned");
 967 +       if ((workspace = end) > ((-__PAGE_OFFSET-(512 <<20)-1) & 0x7fffffff))
 968 +               error("Destination address too large");
 969 +#ifndef CONFIG_RELOCATABLE
 970 +       if ((u32)output != LOAD_PHYSICAL_ADDR)
 971 +               error("Wrong destination address");
 972 +#endif
 973 +
 974 +       lzma_unzip();
 975 +       return;
 976 +}
 977 --- a/scripts/Makefile.lib
 978 +++ b/scripts/Makefile.lib
 979 @@ -172,4 +172,9 @@
 980  quiet_cmd_gzip = GZIP    $@
 981  cmd_gzip = gzip -f -9 < $< > $@
 982
 983 -
 984 +# LZMA
 985 +#
 986 +quiet_cmd_lzma = LZMA $@
 987 +cmd_lzma = bash -e scripts/lzma_kern $< $@ -lc7 -lp0 -pb0
 988 +# to use lzmacomp,
 989 +# cmd_lzma = lzmacomp $< 700 > $@
 990 --- /dev/null
 991 +++ b/scripts/lzma_kern
 992 @@ -0,0 +1,4 @@
 993 +get-size() { echo "$5" ;}
 994 +printf -v len '%.8x' "$(get-size $(ls -l "$1"))"
 995 +lzma e "$@"
 996 +echo -ne "\x$(echo $len | cut -c 7,8)\x$(echo $len | cut -c 5,6)\x$(echo $len | cut -c 3,4)\x$(echo $len | cut -c 1,2)" >> "$2"
 997 --- a/arch/x86/boot/compressed/Makefile
 998 +++ b/arch/x86/boot/compressed/Makefile
 999 @@ -4,7 +4,7 @@
1000  # create a compressed vmlinux image from the original vmlinux
1001  #
1002
1003 -targets := vmlinux vmlinux.bin vmlinux.bin.gz head_$(BITS).o misc.o piggy.o
1004 +targets := vmlinux vmlinux.bin vmlinux.bin.lzma head_$(BITS).o lzma_misc.o piggy.o
1005
1006  KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
1007  KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
1008 @@ -18,7 +18,7 @@
1009  LDFLAGS := -m elf_$(UTS_MACHINE)
1010  LDFLAGS_vmlinux := -T
1011
1012 -$(obj)/vmlinux: $(src)/vmlinux_$(BITS).lds $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/piggy.o FORCE
1013 +$(obj)/vmlinux: $(src)/vmlinux_$(BITS).lds $(obj)/head_$(BITS).o $(obj)/lzma_misc.o $(obj)/piggy.o FORCE
1014         $(call if_changed,ld)
1015         @:
1016
1017 @@ -44,11 +44,11 @@
1018         $(call if_changed,relocbin)
1019
1020  ifdef CONFIG_RELOCATABLE
1021 -$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin.all FORCE
1022 -       $(call if_changed,gzip)
1023 +$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin.all FORCE
1024 +       $(call if_changed,lzma)
1025  else
1026 -$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
1027 -       $(call if_changed,gzip)
1028 +$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
1029 +       $(call if_changed,lzma)
1030  endif
1031  LDFLAGS_piggy.o := -r --format binary --oformat elf32-i386 -T
1032
1033 @@ -60,5 +60,5 @@
1034  endif
1035
1036
1037 -$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
1038 +$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.lzma FORCE
1039         $(call if_changed,ld)