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Update Zstandard to Version 1.5.4

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Signed-off-by: Tino Reichardt <milky-7zip@mcmilk.de>
This commit is contained in:
Tino Reichardt
2023-02-11 10:20:24 +01:00
parent 5fac496461
commit 83b87f6fe3
79 changed files with 4636 additions and 3335 deletions
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84
C/zstd/zstd_v04.c
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@@ -1,5 +1,5 @@
/*
* Copyright (c) Yann Collet, Facebook, Inc.
* Copyright (c) Yann Collet, Meta Platforms, Inc. and affiliates.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
@@ -87,24 +87,6 @@ extern "C" {
/****************************************************************
* Memory I/O
*****************************************************************/
/* MEM_FORCE_MEMORY_ACCESS
* By default, access to unaligned memory is controlled by `memcpy()`, which is safe and portable.
* Unfortunately, on some target/compiler combinations, the generated assembly is sub-optimal.
* The below switch allow to select different access method for improved performance.
* Method 0 (default) : use `memcpy()`. Safe and portable.
* Method 1 : `__packed` statement. It depends on compiler extension (ie, not portable).
* This method is safe if your compiler supports it, and *generally* as fast or faster than `memcpy`.
* Method 2 : direct access. This method is portable but violate C standard.
* It can generate buggy code on targets generating assembly depending on alignment.
* But in some circumstances, it's the only known way to get the most performance (ie GCC + ARMv6)
* See http://fastcompression.blogspot.fr/2015/08/accessing-unaligned-memory.html for details.
* Prefer these methods in priority order (0 > 1 > 2)
*/
#ifndef MEM_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */
# if defined(__INTEL_COMPILER) || defined(__GNUC__) || defined(__ICCARM__)
# define MEM_FORCE_MEMORY_ACCESS 1
# endif
#endif
MEM_STATIC unsigned MEM_32bits(void) { return sizeof(void*)==4; }
MEM_STATIC unsigned MEM_64bits(void) { return sizeof(void*)==8; }
@@ -115,33 +97,6 @@ MEM_STATIC unsigned MEM_isLittleEndian(void)
return one.c[0];
}
#if defined(MEM_FORCE_MEMORY_ACCESS) && (MEM_FORCE_MEMORY_ACCESS==2)
/* violates C standard on structure alignment.
Only use if no other choice to achieve best performance on target platform */
MEM_STATIC U16 MEM_read16(const void* memPtr) { return *(const U16*) memPtr; }
MEM_STATIC U32 MEM_read32(const void* memPtr) { return *(const U32*) memPtr; }
MEM_STATIC U64 MEM_read64(const void* memPtr) { return *(const U64*) memPtr; }
MEM_STATIC void MEM_write16(void* memPtr, U16 value) { *(U16*)memPtr = value; }
#elif defined(MEM_FORCE_MEMORY_ACCESS) && (MEM_FORCE_MEMORY_ACCESS==1)
/* __pack instructions are safer, but compiler specific, hence potentially problematic for some compilers */
/* currently only defined for gcc and icc */
typedef union { U16 u16; U32 u32; U64 u64; } __attribute__((packed)) unalign;
MEM_STATIC U16 MEM_read16(const void* ptr) { return ((const unalign*)ptr)->u16; }
MEM_STATIC U32 MEM_read32(const void* ptr) { return ((const unalign*)ptr)->u32; }
MEM_STATIC U64 MEM_read64(const void* ptr) { return ((const unalign*)ptr)->u64; }
MEM_STATIC void MEM_write16(void* memPtr, U16 value) { ((unalign*)memPtr)->u16 = value; }
#else
/* default method, safe and standard.
can sometimes prove slower */
MEM_STATIC U16 MEM_read16(const void* memPtr)
{
U16 val; memcpy(&val, memPtr, sizeof(val)); return val;
@@ -162,9 +117,6 @@ MEM_STATIC void MEM_write16(void* memPtr, U16 value)
memcpy(memPtr, &value, sizeof(value));
}
#endif /* MEM_FORCE_MEMORY_ACCESS */
MEM_STATIC U16 MEM_readLE16(const void* memPtr)
{
if (MEM_isLittleEndian())
@@ -542,7 +494,7 @@ If there is an error, the function will return an error code, which can be teste
header file (to include)
Copyright (C) 2013-2015, Yann Collet.
BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
BSD 2-Clause License (https://opensource.org/licenses/bsd-license.php)
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
@@ -700,7 +652,7 @@ MEM_STATIC size_t BIT_lookBits(BIT_DStream_t* bitD, U32 nbBits)
}
/*! BIT_lookBitsFast :
* unsafe version; only works only if nbBits >= 1 */
* unsafe version; only works if nbBits >= 1 */
MEM_STATIC size_t BIT_lookBitsFast(BIT_DStream_t* bitD, U32 nbBits)
{
const U32 bitMask = sizeof(bitD->bitContainer)*8 - 1;
@@ -720,7 +672,7 @@ MEM_STATIC size_t BIT_readBits(BIT_DStream_t* bitD, U32 nbBits)
}
/*!BIT_readBitsFast :
* unsafe version; only works only if nbBits >= 1 */
* unsafe version; only works if nbBits >= 1 */
MEM_STATIC size_t BIT_readBitsFast(BIT_DStream_t* bitD, U32 nbBits)
{
size_t value = BIT_lookBitsFast(bitD, nbBits);
@@ -781,7 +733,7 @@ MEM_STATIC unsigned BIT_endOfDStream(const BIT_DStream_t* DStream)
header file for static linking (only)
Copyright (C) 2013-2015, Yann Collet
BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
BSD 2-Clause License (https://opensource.org/licenses/bsd-license.php)
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
@@ -930,7 +882,7 @@ MEM_STATIC unsigned FSE_endOfDState(const FSE_DState_t* DStatePtr)
FSE : Finite State Entropy coder
Copyright (C) 2013-2015, Yann Collet.
BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
BSD 2-Clause License (https://opensource.org/licenses/bsd-license.php)
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
@@ -1436,7 +1388,7 @@ static size_t FSE_decompress(void* dst, size_t maxDstSize, const void* cSrc, siz
header file
Copyright (C) 2013-2015, Yann Collet.
BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
BSD 2-Clause License (https://opensource.org/licenses/bsd-license.php)
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
@@ -1514,7 +1466,7 @@ static unsigned HUF_isError(size_t code); /* tells if a return value i
header file for static linking (only)
Copyright (C) 2013-2015, Yann Collet
BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
BSD 2-Clause License (https://opensource.org/licenses/bsd-license.php)
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
@@ -1601,7 +1553,7 @@ static size_t HUF_decompress4X4_usingDTable(void* dst, size_t maxDstSize, const
Huff0 : Huffman coder, part of New Generation Entropy library
Copyright (C) 2013-2015, Yann Collet.
BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
BSD 2-Clause License (https://opensource.org/licenses/bsd-license.php)
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
@@ -2401,7 +2353,7 @@ static size_t HUF_decompress (void* dst, size_t dstSize, const void* cSrc, size_
zstd - decompression module fo v0.4 legacy format
Copyright (C) 2015-2016, Yann Collet.
BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
BSD 2-Clause License (https://opensource.org/licenses/bsd-license.php)
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
@@ -2876,13 +2828,19 @@ static size_t ZSTD_execSequence(BYTE* op,
const BYTE* const litEnd = *litPtr + sequence.litLength;
const BYTE* match = oLitEnd - sequence.offset;
/* check */
if (oLitEnd > oend_8) return ERROR(dstSize_tooSmall); /* last match must start at a minimum distance of 8 from oend */
/* checks */
size_t const seqLength = sequence.litLength + sequence.matchLength;
if (seqLength > (size_t)(oend - op)) return ERROR(dstSize_tooSmall);
if (sequence.litLength > (size_t)(litLimit - *litPtr)) return ERROR(corruption_detected);
/* Now we know there are no overflow in literal nor match lengths, can use pointer checks */
if (oLitEnd > oend_8) return ERROR(dstSize_tooSmall);
if (oMatchEnd > oend) return ERROR(dstSize_tooSmall); /* overwrite beyond dst buffer */
if (litEnd > litLimit) return ERROR(corruption_detected); /* risk read beyond lit buffer */
if (litEnd > litLimit) return ERROR(corruption_detected); /* overRead beyond lit buffer */
/* copy Literals */
ZSTD_wildcopy(op, *litPtr, sequence.litLength); /* note : oLitEnd <= oend-8 : no risk of overwrite beyond oend */
ZSTD_wildcopy(op, *litPtr, (ptrdiff_t)sequence.litLength); /* note : oLitEnd <= oend-8 : no risk of overwrite beyond oend */
op = oLitEnd;
*litPtr = litEnd; /* update for next sequence */
@@ -3283,7 +3241,7 @@ static void ZSTD_decompress_insertDictionary(ZSTD_DCtx* ctx, const void* dict, s
Buffered version of Zstd compression library
Copyright (C) 2015, Yann Collet.
BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
BSD 2-Clause License (https://opensource.org/licenses/bsd-license.php)
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are