zstd/decompress/zstd_decompress_block.c

864     const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
884     if (sequence.offset > (size_t)(oLitEnd - prefixStart)) {
887         match = dictEnd - (prefixStart - match);
897         match = prefixStart;
911     const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
932     if (sequence.offset > (size_t)(oLitEnd - prefixStart)) {
935         match = dictEnd - (prefixStart - match);
945         match = prefixStart;
956     const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
976         return ZSTD_execSequenceEnd(op, oend, sequence, litPtr, litLimit, prefixStart, virtualStart, dictEnd);
999     if (sequence.offset > (size_t)(oLitEnd - prefixStart)) {
1002         match = dictEnd + (match - prefixStart);
1012         match = prefixStart;
1018     assert(match >= prefixStart);
1049     const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd)
1068         return ZSTD_execSequenceEndSplitLitBuffer(op, oend, oend_w, sequence, litPtr, litLimit, prefixStart, virtualStart, dictEnd);
1091     if (sequence.offset > (size_t)(oLitEnd - prefixStart)) {
1094         match = dictEnd + (match - prefixStart);
1104             match = prefixStart;
1109     assert(match >= prefixStart);
1272 MEM_STATIC int ZSTD_dictionaryIsActive(ZSTD_DCtx const* dctx, BYTE const* prefixStart, BYTE const* oLitEnd)
1278     if (prefixStart == dctx->dictContentBeginForFuzzing) return 1;
1282     if ((size_t)(oLitEnd - prefixStart) >= windowSize) return 0;
1291         BYTE const* prefixStart, BYTE const* virtualStart)
1302     if (ZSTD_dictionaryIsActive(dctx, prefixStart, oLitEnd)) {
1312     (void)dctx, (void)op, (void)oend, (void)seq, (void)prefixStart, (void)virtualStart;
1335     const BYTE* const prefixStart = (const BYTE*) (dctx->prefixStart);
1424                 size_t const oneSeqSize = ZSTD_execSequenceSplitLitBuffer(op, oend, litPtr + sequence.litLength - WILDCOPY_OVERLENGTH, sequence, &litPtr, litBufferEnd, prefixStart, vBase, dictEnd);
1427                 if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequence, prefixStart, vBase);
1453                     size_t const oneSeqSize = ZSTD_execSequence(op, oend, sequence, &litPtr, litBufferEnd, prefixStart, vBase, dictEnd);
1456                     if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequence, prefixStart, vBase);
1490                 size_t const oneSeqSize = ZSTD_execSequence(op, oend, sequence, &litPtr, litBufferEnd, prefixStart, vBase, dictEnd);
1493                 if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequence, prefixStart, vBase);
1552     const BYTE* const prefixStart = (const BYTE*)(dctx->prefixStart);
1592             size_t const oneSeqSize = ZSTD_execSequence(op, oend, sequence, &litPtr, litEnd, prefixStart, vBase, dictEnd);
1595             if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequence, prefixStart, vBase);
1651                    const BYTE* const prefixStart, const BYTE* const dictEnd)
1654     {   const BYTE* const matchBase = (sequence.offset > prefetchPos) ? dictEnd : prefixStart;
1681     const BYTE* const prefixStart = (const BYTE*) (dctx->prefixStart);
1695         size_t prefetchPos = (size_t)(op-prefixStart); /* track position relative to prefixStart */
1711             prefetchPos = ZSTD_prefetchMatch(prefetchPos, sequence, prefixStart, dictEnd);
1735                 oneSeqSize = ZSTD_execSequence(op, oend, sequences[(seqNb - ADVANCED_SEQS) & STORED_SEQS_MASK], &litPtr, litBufferEnd, prefixStart, dictStart, dictEnd);
1738                 if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequences[(seqNb - ADVANCED_SEQS) & STORED_SEQS_MASK], prefixStart, dictStart);
1742                 prefetchPos = ZSTD_prefetchMatch(prefetchPos, sequence, prefixStart, dictEnd);
1750                     ZSTD_execSequenceSplitLitBuffer(op, oend, litPtr + sequences[(seqNb - ADVANCED_SEQS) & STORED_SEQS_MASK].litLength - WILDCOPY_OVERLENGTH, sequences[(seqNb - ADVANCED_SEQS) & STORED_SEQS_MASK], &litPtr, litBufferEnd, prefixStart, dictStart, dictEnd) :
1751                     ZSTD_execSequence(op, oend, sequences[(seqNb - ADVANCED_SEQS) & STORED_SEQS_MASK], &litPtr, litBufferEnd, prefixStart, dictStart, dictEnd);
1754                 if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequences[(seqNb - ADVANCED_SEQS) & STORED_SEQS_MASK], prefixStart, dictStart);
1758                 prefetchPos = ZSTD_prefetchMatch(prefetchPos, sequence, prefixStart, dictEnd);
1783                     size_t const oneSeqSize = ZSTD_execSequence(op, oend, *sequence, &litPtr, litBufferEnd, prefixStart, dictStart, dictEnd);
1786                     if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequences[seqNb&STORED_SEQS_MASK], prefixStart, dictStart);
1795                     ZSTD_execSequenceSplitLitBuffer(op, oend, litPtr + sequence->litLength - WILDCOPY_OVERLENGTH, *sequence, &litPtr, litBufferEnd, prefixStart, dictStart, dictEnd) :
1796                     ZSTD_execSequence(op, oend, *sequence, &litPtr, litBufferEnd, prefixStart, dictStart, dictEnd);
1799                 if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequences[seqNb&STORED_SEQS_MASK], prefixStart, dictStart);
2056         dctx->virtualStart = (const char*)dst - ((const char*)(dctx->previousDstEnd) - (const char*)(dctx->prefixStart));
2057         dctx->prefixStart = dst;