zstd/decompress/zstd_decompress_block.c

79         dctx->litBuffer = (BYTE*)dst + ZSTD_BLOCKSIZE_MAX + WILDCOPY_OVERLENGTH;
88             dctx->litBuffer = (BYTE*)dst + expectedWriteSize - litSize + ZSTD_LITBUFFEREXTRASIZE - WILDCOPY_OVERLENGTH;
93             dctx->litBuffer = (BYTE*)dst + expectedWriteSize - litSize;
94             dctx->litBufferEnd = (BYTE*)dst + expectedWriteSize;
126     {   const BYTE* const istart = (const BYTE*) src;
454     BYTE* spread = (BYTE*)(symbolNext + MaxSeq + 1);
554             tableDecode[u].nbBits = (BYTE) (tableLog - BIT_highbit32(nextState) );
617         RETURN_ERROR_IF((*(const BYTE*)src) > max, corruption_detected, "");
618         {   U32 const symbol = *(const BYTE*)src;
656     const BYTE* const istart = (const BYTE*)src;
657     const BYTE* const iend = istart + srcSize;
658     const BYTE* ip = istart;
759 HINT_INLINE void ZSTD_overlapCopy8(BYTE** op, BYTE const** ip, size_t offset) {
792 static void ZSTD_safecopy(BYTE* op, const BYTE* const oend_w, BYTE const* ip, ptrdiff_t length, ZSTD_overlap_e ovtype) {
794     BYTE* const oend = op + length;
832 static void ZSTD_safecopyDstBeforeSrc(BYTE* op, BYTE const* ip, ptrdiff_t length) {
834     BYTE* const oend = op + length;
861 size_t ZSTD_execSequenceEnd(BYTE* op,
862     BYTE* const oend, seq_t sequence,
863     const BYTE** litPtr, const BYTE* const litLimit,
864     const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
866     BYTE* const oLitEnd = op + sequence.litLength;
868     const BYTE* const iLitEnd = *litPtr + sequence.litLength;
869     const BYTE* match = oLitEnd - sequence.offset;
870     BYTE* const oend_w = oend - WILDCOPY_OVERLENGTH;
908 size_t ZSTD_execSequenceEndSplitLitBuffer(BYTE* op,
909     BYTE* const oend, const BYTE* const oend_w, seq_t sequence,
910     const BYTE** litPtr, const BYTE* const litLimit,
911     const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
913     BYTE* const oLitEnd = op + sequence.litLength;
915     const BYTE* const iLitEnd = *litPtr + sequence.litLength;
916     const BYTE* match = oLitEnd - sequence.offset;
953 size_t ZSTD_execSequence(BYTE* op,
954     BYTE* const oend, seq_t sequence,
955     const BYTE** litPtr, const BYTE* const litLimit,
956     const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
958     BYTE* const oLitEnd = op + sequence.litLength;
960     BYTE* const oMatchEnd = op + sequenceLength;   /* risk : address space overflow (32-bits) */
961     BYTE* const oend_w = oend - WILDCOPY_OVERLENGTH;   /* risk : address space underflow on oend=NULL */
962     const BYTE* const iLitEnd = *litPtr + sequence.litLength;
963     const BYTE* match = oLitEnd - sequence.offset;
1046 size_t ZSTD_execSequenceSplitLitBuffer(BYTE* op,
1047     BYTE* const oend, const BYTE* const oend_w, seq_t sequence,
1048     const BYTE** litPtr, const BYTE* const litLimit,
1049     const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
1051     BYTE* const oLitEnd = op + sequence.litLength;
1053     BYTE* const oMatchEnd = op + sequenceLength;   /* risk : address space overflow (32-bits) */
1054     const BYTE* const iLitEnd = *litPtr + sequence.litLength;
1055     const BYTE* match = oLitEnd - sequence.offset;
1178         BYTE const llBits = llDInfo->nbAdditionalBits;
1179         BYTE const mlBits = mlDInfo->nbAdditionalBits;
1180         BYTE const ofBits = ofDInfo->nbAdditionalBits;
1181         BYTE const totalBits = llBits+mlBits+ofBits;
1272 MEM_STATIC int ZSTD_dictionaryIsActive(ZSTD_DCtx const* dctx, BYTE const* prefixStart, BYTE const* oLitEnd)
1289         BYTE const* op, BYTE const* oend,
1291         BYTE const* prefixStart, BYTE const* virtualStart)
1296     BYTE const* const oLitEnd = op + seq.litLength;
1328     const BYTE* ip = (const BYTE*)seqStart;
1329     const BYTE* const iend = ip + seqSize;
1330     BYTE* const ostart = (BYTE*)dst;
1331     BYTE* const oend = ostart + maxDstSize;
1332     BYTE* op = ostart;
1333     const BYTE* litPtr = dctx->litPtr;
1334     const BYTE* litBufferEnd = dctx->litBufferEnd;
1335     const BYTE* const prefixStart = (const BYTE*) (dctx->prefixStart);
1336     const BYTE* const vBase = (const BYTE*) (dctx->virtualStart);
1337     const BYTE* const dictEnd = (const BYTE*) (dctx->dictEnd);
1545     const BYTE* ip = (const BYTE*)seqStart;
1546     const BYTE* const iend = ip + seqSize;
1547     BYTE* const ostart = (BYTE*)dst;
1548     BYTE* const oend = dctx->litBufferLocation == ZSTD_not_in_dst ? ostart + maxDstSize : dctx->litBuffer;
1549     BYTE* op = ostart;
1550     const BYTE* litPtr = dctx->litPtr;
1551     const BYTE* const litEnd = litPtr + dctx->litSize;
1552     const BYTE* const prefixStart = (const BYTE*)(dctx->prefixStart);
1553     const BYTE* const vBase = (const BYTE*)(dctx->virtualStart);
1554     const BYTE* const dictEnd = (const BYTE*)(dctx->dictEnd);
1651                    const BYTE* const prefixStart, const BYTE* const dictEnd)
1654     {   const BYTE* const matchBase = (sequence.offset > prefetchPos) ? dictEnd : prefixStart;
1655         const BYTE* const match = matchBase + prefetchPos - sequence.offset; /* note : this operation can overflow when seq.offset is really too large, which can only happen when input is corrupted.
1674     const BYTE* ip = (const BYTE*)seqStart;
1675     const BYTE* const iend = ip + seqSize;
1676     BYTE* const ostart = (BYTE*)dst;
1677     BYTE* const oend = dctx->litBufferLocation == ZSTD_in_dst ? dctx->litBuffer : ostart + maxDstSize;
1678     BYTE* op = ostart;
1679     const BYTE* litPtr = dctx->litPtr;
1680     const BYTE* litBufferEnd = dctx->litBufferEnd;
1681     const BYTE* const prefixStart = (const BYTE*) (dctx->prefixStart);
1682     const BYTE* const dictStart = (const BYTE*) (dctx->virtualStart);
1683     const BYTE* const dictEnd = (const BYTE*) (dctx->dictEnd);
1982     const BYTE* ip = (const BYTE*)src;