diff options
Diffstat (limited to 'lib/zstd/common')
| -rw-r--r-- | lib/zstd/common/bitstream.h | 437 | ||||
| -rw-r--r-- | lib/zstd/common/compiler.h | 177 | ||||
| -rw-r--r-- | lib/zstd/common/cpu.h | 194 | ||||
| -rw-r--r-- | lib/zstd/common/debug.c | 24 | ||||
| -rw-r--r-- | lib/zstd/common/debug.h | 101 | ||||
| -rw-r--r-- | lib/zstd/common/entropy_common.c | 357 | ||||
| -rw-r--r-- | lib/zstd/common/error_private.c | 56 | ||||
| -rw-r--r-- | lib/zstd/common/error_private.h | 69 | ||||
| -rw-r--r-- | lib/zstd/common/fse.h | 710 | ||||
| -rw-r--r-- | lib/zstd/common/fse_decompress.c | 390 | ||||
| -rw-r--r-- | lib/zstd/common/huf.h | 356 | ||||
| -rw-r--r-- | lib/zstd/common/mem.h | 259 | ||||
| -rw-r--r-- | lib/zstd/common/zstd_common.c | 83 | ||||
| -rw-r--r-- | lib/zstd/common/zstd_deps.h | 125 | ||||
| -rw-r--r-- | lib/zstd/common/zstd_internal.h | 450 |
15 files changed, 0 insertions, 3788 deletions
diff --git a/lib/zstd/common/bitstream.h b/lib/zstd/common/bitstream.h deleted file mode 100644 index 28248abe86..0000000000 --- a/lib/zstd/common/bitstream.h +++ /dev/null @@ -1,437 +0,0 @@ -/* ****************************************************************** - * bitstream - * Part of FSE library - * Copyright (c) Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - Source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ -#ifndef BITSTREAM_H_MODULE -#define BITSTREAM_H_MODULE - -/* -* This API consists of small unitary functions, which must be inlined for best performance. -* Since link-time-optimization is not available for all compilers, -* these functions are defined into a .h to be included. -*/ - -/*-**************************************** -* Dependencies -******************************************/ -#include "mem.h" /* unaligned access routines */ -#include "compiler.h" /* UNLIKELY() */ -#include "debug.h" /* assert(), DEBUGLOG(), RAWLOG() */ -#include "error_private.h" /* error codes and messages */ - - -/*========================================= -* Target specific -=========================================*/ - -#define STREAM_ACCUMULATOR_MIN_32 25 -#define STREAM_ACCUMULATOR_MIN_64 57 -#define STREAM_ACCUMULATOR_MIN ((U32)(MEM_32bits() ? STREAM_ACCUMULATOR_MIN_32 : STREAM_ACCUMULATOR_MIN_64)) - - -/*-****************************************** -* bitStream encoding API (write forward) -********************************************/ -/* bitStream can mix input from multiple sources. - * A critical property of these streams is that they encode and decode in **reverse** direction. - * So the first bit sequence you add will be the last to be read, like a LIFO stack. - */ -typedef struct { - size_t bitContainer; - unsigned bitPos; - char* startPtr; - char* ptr; - char* endPtr; -} BIT_CStream_t; - -MEM_STATIC size_t BIT_initCStream(BIT_CStream_t* bitC, void* dstBuffer, size_t dstCapacity); -MEM_STATIC void BIT_addBits(BIT_CStream_t* bitC, size_t value, unsigned nbBits); -MEM_STATIC void BIT_flushBits(BIT_CStream_t* bitC); -MEM_STATIC size_t BIT_closeCStream(BIT_CStream_t* bitC); - -/* Start with initCStream, providing the size of buffer to write into. -* bitStream will never write outside of this buffer. -* `dstCapacity` must be >= sizeof(bitD->bitContainer), otherwise @return will be an error code. -* -* bits are first added to a local register. -* Local register is size_t, hence 64-bits on 64-bits systems, or 32-bits on 32-bits systems. -* Writing data into memory is an explicit operation, performed by the flushBits function. -* Hence keep track how many bits are potentially stored into local register to avoid register overflow. -* After a flushBits, a maximum of 7 bits might still be stored into local register. -* -* Avoid storing elements of more than 24 bits if you want compatibility with 32-bits bitstream readers. -* -* Last operation is to close the bitStream. -* The function returns the final size of CStream in bytes. -* If data couldn't fit into `dstBuffer`, it will return a 0 ( == not storable) -*/ - - -/*-******************************************** -* bitStream decoding API (read backward) -**********************************************/ -typedef struct { - size_t bitContainer; - unsigned bitsConsumed; - const char* ptr; - const char* start; - const char* limitPtr; -} BIT_DStream_t; - -typedef enum { BIT_DStream_unfinished = 0, - BIT_DStream_endOfBuffer = 1, - BIT_DStream_completed = 2, - BIT_DStream_overflow = 3 } BIT_DStream_status; /* result of BIT_reloadDStream() */ - /* 1,2,4,8 would be better for bitmap combinations, but slows down performance a bit ... :( */ - -MEM_STATIC size_t BIT_initDStream(BIT_DStream_t* bitD, const void* srcBuffer, size_t srcSize); -MEM_STATIC size_t BIT_readBits(BIT_DStream_t* bitD, unsigned nbBits); -MEM_STATIC BIT_DStream_status BIT_reloadDStream(BIT_DStream_t* bitD); -MEM_STATIC unsigned BIT_endOfDStream(const BIT_DStream_t* bitD); - - -/* Start by invoking BIT_initDStream(). -* A chunk of the bitStream is then stored into a local register. -* Local register size is 64-bits on 64-bits systems, 32-bits on 32-bits systems (size_t). -* You can then retrieve bitFields stored into the local register, **in reverse order**. -* Local register is explicitly reloaded from memory by the BIT_reloadDStream() method. -* A reload guarantee a minimum of ((8*sizeof(bitD->bitContainer))-7) bits when its result is BIT_DStream_unfinished. -* Otherwise, it can be less than that, so proceed accordingly. -* Checking if DStream has reached its end can be performed with BIT_endOfDStream(). -*/ - - -/*-**************************************** -* unsafe API -******************************************/ -MEM_STATIC void BIT_addBitsFast(BIT_CStream_t* bitC, size_t value, unsigned nbBits); -/* faster, but works only if value is "clean", meaning all high bits above nbBits are 0 */ - -MEM_STATIC void BIT_flushBitsFast(BIT_CStream_t* bitC); -/* unsafe version; does not check buffer overflow */ - -MEM_STATIC size_t BIT_readBitsFast(BIT_DStream_t* bitD, unsigned nbBits); -/* faster, but works only if nbBits >= 1 */ - - - -/*-************************************************************** -* Internal functions -****************************************************************/ -MEM_STATIC unsigned BIT_highbit32 (U32 val) -{ - assert(val != 0); - { -# if (__GNUC__ >= 3) /* Use GCC Intrinsic */ - return __builtin_clz (val) ^ 31; -# else /* Software version */ - static const unsigned DeBruijnClz[32] = { 0, 9, 1, 10, 13, 21, 2, 29, - 11, 14, 16, 18, 22, 25, 3, 30, - 8, 12, 20, 28, 15, 17, 24, 7, - 19, 27, 23, 6, 26, 5, 4, 31 }; - U32 v = val; - v |= v >> 1; - v |= v >> 2; - v |= v >> 4; - v |= v >> 8; - v |= v >> 16; - return DeBruijnClz[ (U32) (v * 0x07C4ACDDU) >> 27]; -# endif - } -} - -/*===== Local Constants =====*/ -static const unsigned BIT_mask[] = { - 0, 1, 3, 7, 0xF, 0x1F, - 0x3F, 0x7F, 0xFF, 0x1FF, 0x3FF, 0x7FF, - 0xFFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF, 0x1FFFF, - 0x3FFFF, 0x7FFFF, 0xFFFFF, 0x1FFFFF, 0x3FFFFF, 0x7FFFFF, - 0xFFFFFF, 0x1FFFFFF, 0x3FFFFFF, 0x7FFFFFF, 0xFFFFFFF, 0x1FFFFFFF, - 0x3FFFFFFF, 0x7FFFFFFF}; /* up to 31 bits */ -#define BIT_MASK_SIZE (sizeof(BIT_mask) / sizeof(BIT_mask[0])) - -/*-************************************************************** -* bitStream encoding -****************************************************************/ -/*! BIT_initCStream() : - * `dstCapacity` must be > sizeof(size_t) - * @return : 0 if success, - * otherwise an error code (can be tested using ERR_isError()) */ -MEM_STATIC size_t BIT_initCStream(BIT_CStream_t* bitC, - void* startPtr, size_t dstCapacity) -{ - bitC->bitContainer = 0; - bitC->bitPos = 0; - bitC->startPtr = (char*)startPtr; - bitC->ptr = bitC->startPtr; - bitC->endPtr = bitC->startPtr + dstCapacity - sizeof(bitC->bitContainer); - if (dstCapacity <= sizeof(bitC->bitContainer)) return ERROR(dstSize_tooSmall); - return 0; -} - -/*! BIT_addBits() : - * can add up to 31 bits into `bitC`. - * Note : does not check for register overflow ! */ -MEM_STATIC void BIT_addBits(BIT_CStream_t* bitC, - size_t value, unsigned nbBits) -{ - DEBUG_STATIC_ASSERT(BIT_MASK_SIZE == 32); - assert(nbBits < BIT_MASK_SIZE); - assert(nbBits + bitC->bitPos < sizeof(bitC->bitContainer) * 8); - bitC->bitContainer |= (value & BIT_mask[nbBits]) << bitC->bitPos; - bitC->bitPos += nbBits; -} - -/*! BIT_addBitsFast() : - * works only if `value` is _clean_, - * meaning all high bits above nbBits are 0 */ -MEM_STATIC void BIT_addBitsFast(BIT_CStream_t* bitC, - size_t value, unsigned nbBits) -{ - assert((value>>nbBits) == 0); - assert(nbBits + bitC->bitPos < sizeof(bitC->bitContainer) * 8); - bitC->bitContainer |= value << bitC->bitPos; - bitC->bitPos += nbBits; -} - -/*! BIT_flushBitsFast() : - * assumption : bitContainer has not overflowed - * unsafe version; does not check buffer overflow */ -MEM_STATIC void BIT_flushBitsFast(BIT_CStream_t* bitC) -{ - size_t const nbBytes = bitC->bitPos >> 3; - assert(bitC->bitPos < sizeof(bitC->bitContainer) * 8); - assert(bitC->ptr <= bitC->endPtr); - MEM_writeLEST(bitC->ptr, bitC->bitContainer); - bitC->ptr += nbBytes; - bitC->bitPos &= 7; - bitC->bitContainer >>= nbBytes*8; -} - -/*! BIT_flushBits() : - * assumption : bitContainer has not overflowed - * safe version; check for buffer overflow, and prevents it. - * note : does not signal buffer overflow. - * overflow will be revealed later on using BIT_closeCStream() */ -MEM_STATIC void BIT_flushBits(BIT_CStream_t* bitC) -{ - size_t const nbBytes = bitC->bitPos >> 3; - assert(bitC->bitPos < sizeof(bitC->bitContainer) * 8); - assert(bitC->ptr <= bitC->endPtr); - MEM_writeLEST(bitC->ptr, bitC->bitContainer); - bitC->ptr += nbBytes; - if (bitC->ptr > bitC->endPtr) bitC->ptr = bitC->endPtr; - bitC->bitPos &= 7; - bitC->bitContainer >>= nbBytes*8; -} - -/*! BIT_closeCStream() : - * @return : size of CStream, in bytes, - * or 0 if it could not fit into dstBuffer */ -MEM_STATIC size_t BIT_closeCStream(BIT_CStream_t* bitC) -{ - BIT_addBitsFast(bitC, 1, 1); /* endMark */ - BIT_flushBits(bitC); - if (bitC->ptr >= bitC->endPtr) return 0; /* overflow detected */ - return (bitC->ptr - bitC->startPtr) + (bitC->bitPos > 0); -} - - -/*-******************************************************** -* bitStream decoding -**********************************************************/ -/*! BIT_initDStream() : - * Initialize a BIT_DStream_t. - * `bitD` : a pointer to an already allocated BIT_DStream_t structure. - * `srcSize` must be the *exact* size of the bitStream, in bytes. - * @return : size of stream (== srcSize), or an errorCode if a problem is detected - */ -MEM_STATIC size_t BIT_initDStream(BIT_DStream_t* bitD, const void* srcBuffer, size_t srcSize) -{ - if (srcSize < 1) { ZSTD_memset(bitD, 0, sizeof(*bitD)); return ERROR(srcSize_wrong); } - - bitD->start = (const char*)srcBuffer; - bitD->limitPtr = bitD->start + sizeof(bitD->bitContainer); - - if (srcSize >= sizeof(bitD->bitContainer)) { /* normal case */ - bitD->ptr = (const char*)srcBuffer + srcSize - sizeof(bitD->bitContainer); - bitD->bitContainer = MEM_readLEST(bitD->ptr); - { BYTE const lastByte = ((const BYTE*)srcBuffer)[srcSize-1]; - bitD->bitsConsumed = lastByte ? 8 - BIT_highbit32(lastByte) : 0; /* ensures bitsConsumed is always set */ - if (lastByte == 0) return ERROR(GENERIC); /* endMark not present */ } - } else { - bitD->ptr = bitD->start; - bitD->bitContainer = *(const BYTE*)(bitD->start); - switch(srcSize) - { - case 7: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[6]) << (sizeof(bitD->bitContainer)*8 - 16); - ZSTD_FALLTHROUGH; - - case 6: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[5]) << (sizeof(bitD->bitContainer)*8 - 24); - ZSTD_FALLTHROUGH; - - case 5: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[4]) << (sizeof(bitD->bitContainer)*8 - 32); - ZSTD_FALLTHROUGH; - - case 4: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[3]) << 24; - ZSTD_FALLTHROUGH; - - case 3: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[2]) << 16; - ZSTD_FALLTHROUGH; - - case 2: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[1]) << 8; - ZSTD_FALLTHROUGH; - - default: break; - } - { BYTE const lastByte = ((const BYTE*)srcBuffer)[srcSize-1]; - bitD->bitsConsumed = lastByte ? 8 - BIT_highbit32(lastByte) : 0; - if (lastByte == 0) return ERROR(corruption_detected); /* endMark not present */ - } - bitD->bitsConsumed += (U32)(sizeof(bitD->bitContainer) - srcSize)*8; - } - - return srcSize; -} - -MEM_STATIC FORCE_INLINE_ATTR size_t BIT_getUpperBits(size_t bitContainer, U32 const start) -{ - return bitContainer >> start; -} - -MEM_STATIC FORCE_INLINE_ATTR size_t BIT_getMiddleBits(size_t bitContainer, U32 const start, U32 const nbBits) -{ - U32 const regMask = sizeof(bitContainer)*8 - 1; - /* if start > regMask, bitstream is corrupted, and result is undefined */ - assert(nbBits < BIT_MASK_SIZE); - return (bitContainer >> (start & regMask)) & BIT_mask[nbBits]; -} - -MEM_STATIC FORCE_INLINE_ATTR size_t BIT_getLowerBits(size_t bitContainer, U32 const nbBits) -{ - assert(nbBits < BIT_MASK_SIZE); - return bitContainer & BIT_mask[nbBits]; -} - -/*! BIT_lookBits() : - * Provides next n bits from local register. - * local register is not modified. - * On 32-bits, maxNbBits==24. - * On 64-bits, maxNbBits==56. - * @return : value extracted */ -MEM_STATIC FORCE_INLINE_ATTR size_t BIT_lookBits(const BIT_DStream_t* bitD, U32 nbBits) -{ - /* arbitrate between double-shift and shift+mask */ -#if 1 - /* if bitD->bitsConsumed + nbBits > sizeof(bitD->bitContainer)*8, - * bitstream is likely corrupted, and result is undefined */ - return BIT_getMiddleBits(bitD->bitContainer, (sizeof(bitD->bitContainer)*8) - bitD->bitsConsumed - nbBits, nbBits); -#else - /* this code path is slower on my os-x laptop */ - U32 const regMask = sizeof(bitD->bitContainer)*8 - 1; - return ((bitD->bitContainer << (bitD->bitsConsumed & regMask)) >> 1) >> ((regMask-nbBits) & regMask); -#endif -} - -/*! BIT_lookBitsFast() : - * unsafe version; only works if nbBits >= 1 */ -MEM_STATIC size_t BIT_lookBitsFast(const BIT_DStream_t* bitD, U32 nbBits) -{ - U32 const regMask = sizeof(bitD->bitContainer)*8 - 1; - assert(nbBits >= 1); - return (bitD->bitContainer << (bitD->bitsConsumed & regMask)) >> (((regMask+1)-nbBits) & regMask); -} - -MEM_STATIC FORCE_INLINE_ATTR void BIT_skipBits(BIT_DStream_t* bitD, U32 nbBits) -{ - bitD->bitsConsumed += nbBits; -} - -/*! BIT_readBits() : - * Read (consume) next n bits from local register and update. - * Pay attention to not read more than nbBits contained into local register. - * @return : extracted value. */ -MEM_STATIC FORCE_INLINE_ATTR size_t BIT_readBits(BIT_DStream_t* bitD, unsigned nbBits) -{ - size_t const value = BIT_lookBits(bitD, nbBits); - BIT_skipBits(bitD, nbBits); - return value; -} - -/*! BIT_readBitsFast() : - * unsafe version; only works only if nbBits >= 1 */ -MEM_STATIC size_t BIT_readBitsFast(BIT_DStream_t* bitD, unsigned nbBits) -{ - size_t const value = BIT_lookBitsFast(bitD, nbBits); - assert(nbBits >= 1); - BIT_skipBits(bitD, nbBits); - return value; -} - -/*! BIT_reloadDStreamFast() : - * Similar to BIT_reloadDStream(), but with two differences: - * 1. bitsConsumed <= sizeof(bitD->bitContainer)*8 must hold! - * 2. Returns BIT_DStream_overflow when bitD->ptr < bitD->limitPtr, at this - * point you must use BIT_reloadDStream() to reload. - */ -MEM_STATIC BIT_DStream_status BIT_reloadDStreamFast(BIT_DStream_t* bitD) -{ - if (UNLIKELY(bitD->ptr < bitD->limitPtr)) - return BIT_DStream_overflow; - assert(bitD->bitsConsumed <= sizeof(bitD->bitContainer)*8); - bitD->ptr -= bitD->bitsConsumed >> 3; - bitD->bitsConsumed &= 7; - bitD->bitContainer = MEM_readLEST(bitD->ptr); - return BIT_DStream_unfinished; -} - -/*! BIT_reloadDStream() : - * Refill `bitD` from buffer previously set in BIT_initDStream() . - * This function is safe, it guarantees it will not read beyond src buffer. - * @return : status of `BIT_DStream_t` internal register. - * when status == BIT_DStream_unfinished, internal register is filled with at least 25 or 57 bits */ -MEM_STATIC BIT_DStream_status BIT_reloadDStream(BIT_DStream_t* bitD) -{ - if (bitD->bitsConsumed > (sizeof(bitD->bitContainer)*8)) /* overflow detected, like end of stream */ - return BIT_DStream_overflow; - - if (bitD->ptr >= bitD->limitPtr) { - return BIT_reloadDStreamFast(bitD); - } - if (bitD->ptr == bitD->start) { - if (bitD->bitsConsumed < sizeof(bitD->bitContainer)*8) return BIT_DStream_endOfBuffer; - return BIT_DStream_completed; - } - /* start < ptr < limitPtr */ - { U32 nbBytes = bitD->bitsConsumed >> 3; - BIT_DStream_status result = BIT_DStream_unfinished; - if (bitD->ptr - nbBytes < bitD->start) { - nbBytes = (U32)(bitD->ptr - bitD->start); /* ptr > start */ - result = BIT_DStream_endOfBuffer; - } - bitD->ptr -= nbBytes; - bitD->bitsConsumed -= nbBytes*8; - bitD->bitContainer = MEM_readLEST(bitD->ptr); /* reminder : srcSize > sizeof(bitD->bitContainer), otherwise bitD->ptr == bitD->start */ - return result; - } -} - -/*! BIT_endOfDStream() : - * @return : 1 if DStream has _exactly_ reached its end (all bits consumed). - */ -MEM_STATIC unsigned BIT_endOfDStream(const BIT_DStream_t* DStream) -{ - return ((DStream->ptr == DStream->start) && (DStream->bitsConsumed == sizeof(DStream->bitContainer)*8)); -} - - -#endif /* BITSTREAM_H_MODULE */ diff --git a/lib/zstd/common/compiler.h b/lib/zstd/common/compiler.h deleted file mode 100644 index f5a9c70a22..0000000000 --- a/lib/zstd/common/compiler.h +++ /dev/null @@ -1,177 +0,0 @@ -/* - * Copyright (c) Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTD_COMPILER_H -#define ZSTD_COMPILER_H - -/*-******************************************************* -* Compiler specifics -*********************************************************/ -/* force inlining */ - -#if !defined(ZSTD_NO_INLINE) -#if (defined(__GNUC__) && !defined(__STRICT_ANSI__)) || defined(__cplusplus) || defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L /* C99 */ -# define INLINE_KEYWORD inline -#else -# define INLINE_KEYWORD -#endif - -#define FORCE_INLINE_ATTR __attribute__((always_inline)) - -#else - -#define INLINE_KEYWORD -#define FORCE_INLINE_ATTR - -#endif - -/* - On MSVC qsort requires that functions passed into it use the __cdecl calling conversion(CC). - This explictly marks such functions as __cdecl so that the code will still compile - if a CC other than __cdecl has been made the default. -*/ -#define WIN_CDECL - -/* - * FORCE_INLINE_TEMPLATE is used to define C "templates", which take constant - * parameters. They must be inlined for the compiler to eliminate the constant - * branches. - */ -#define FORCE_INLINE_TEMPLATE static INLINE_KEYWORD FORCE_INLINE_ATTR -/* - * HINT_INLINE is used to help the compiler generate better code. It is *not* - * used for "templates", so it can be tweaked based on the compilers - * performance. - * - * gcc-4.8 and gcc-4.9 have been shown to benefit from leaving off the - * always_inline attribute. - * - * clang up to 5.0.0 (trunk) benefit tremendously from the always_inline - * attribute. - */ -#if !defined(__clang__) && defined(__GNUC__) && __GNUC__ >= 4 && __GNUC_MINOR__ >= 8 && __GNUC__ < 5 -# define HINT_INLINE static INLINE_KEYWORD -#else -# define HINT_INLINE static INLINE_KEYWORD FORCE_INLINE_ATTR -#endif - -/* UNUSED_ATTR tells the compiler it is okay if the function is unused. */ -#define UNUSED_ATTR __attribute__((unused)) - -/* force no inlining */ -#define FORCE_NOINLINE static __attribute__((__noinline__)) - - -/* target attribute */ -#ifndef __has_attribute - #define __has_attribute(x) 0 /* Compatibility with non-clang compilers. */ -#endif -#define TARGET_ATTRIBUTE(target) __attribute__((__target__(target))) - -/* Enable runtime BMI2 dispatch based on the CPU. - * Enabled for clang & gcc >=4.8 on x86 when BMI2 isn't enabled by default. - */ -#ifndef DYNAMIC_BMI2 - #if ((defined(__clang__) && __has_attribute(__target__)) \ - || (defined(__GNUC__) \ - && (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))) \ - && (defined(__x86_64__) || defined(_M_X86)) \ - && !defined(__BMI2__) - # define DYNAMIC_BMI2 1 - #else - # define DYNAMIC_BMI2 0 - #endif -#endif - -/* prefetch - * can be disabled, by declaring NO_PREFETCH build macro */ -#if ( (__GNUC__ >= 4) || ( (__GNUC__ == 3) && (__GNUC_MINOR__ >= 1) ) ) -# define PREFETCH_L1(ptr) __builtin_prefetch((ptr), 0 /* rw==read */, 3 /* locality */) -# define PREFETCH_L2(ptr) __builtin_prefetch((ptr), 0 /* rw==read */, 2 /* locality */) -#elif defined(__aarch64__) -# define PREFETCH_L1(ptr) __asm__ __volatile__("prfm pldl1keep, %0" ::"Q"(*(ptr))) -# define PREFETCH_L2(ptr) __asm__ __volatile__("prfm pldl2keep, %0" ::"Q"(*(ptr))) -#else -# define PREFETCH_L1(ptr) (void)(ptr) /* disabled */ -# define PREFETCH_L2(ptr) (void)(ptr) /* disabled */ -#endif /* NO_PREFETCH */ - -#define CACHELINE_SIZE 64 - -#define PREFETCH_AREA(p, s) { \ - const char* const _ptr = (const char*)(p); \ - size_t const _size = (size_t)(s); \ - size_t _pos; \ - for (_pos=0; _pos<_size; _pos+=CACHELINE_SIZE) { \ - PREFETCH_L2(_ptr + _pos); \ - } \ -} - -/* vectorization - * older GCC (pre gcc-4.3 picked as the cutoff) uses a different syntax */ -#if !defined(__INTEL_COMPILER) && !defined(__clang__) && defined(__GNUC__) -# if (__GNUC__ == 4 && __GNUC_MINOR__ > 3) || (__GNUC__ >= 5) -# define DONT_VECTORIZE __attribute__((optimize("no-tree-vectorize"))) -# else -# define DONT_VECTORIZE _Pragma("GCC optimize(\"no-tree-vectorize\")") -# endif -#else -# define DONT_VECTORIZE -#endif - -/* Tell the compiler that a branch is likely or unlikely. - * Only use these macros if it causes the compiler to generate better code. - * If you can remove a LIKELY/UNLIKELY annotation without speed changes in gcc - * and clang, please do. - */ -#define LIKELY(x) (__builtin_expect((x), 1)) -#define UNLIKELY(x) (__builtin_expect((x), 0)) - -/* disable warnings */ - -/*Like DYNAMIC_BMI2 but for compile time determination of BMI2 support*/ - - -/* compat. with non-clang compilers */ -#ifndef __has_builtin -# define __has_builtin(x) 0 -#endif - -/* compat. with non-clang compilers */ -#ifndef __has_feature -# define __has_feature(x) 0 -#endif - -/* C-language Attributes are added in C23. */ -#if defined(__STDC_VERSION__) && (__STDC_VERSION__ > 201710L) && defined(__has_c_attribute) -# define ZSTD_HAS_C_ATTRIBUTE(x) __has_c_attribute(x) -#else -# define ZSTD_HAS_C_ATTRIBUTE(x) 0 -#endif - -/* Only use C++ attributes in C++. Some compilers report support for C++ - * attributes when compiling with C. - */ -#define ZSTD_HAS_CPP_ATTRIBUTE(x) 0 - -/* Define ZSTD_FALLTHROUGH macro for annotating switch case with the 'fallthrough' attribute. - * - C23: https://en.cppreference.com/w/c/language/attributes/fallthrough - * - CPP17: https://en.cppreference.com/w/cpp/language/attributes/fallthrough - * - Else: __attribute__((__fallthrough__)) - */ -#define ZSTD_FALLTHROUGH fallthrough - -/* detects whether we are being compiled under msan */ - - -/* detects whether we are being compiled under asan */ - - -#endif /* ZSTD_COMPILER_H */ diff --git a/lib/zstd/common/cpu.h b/lib/zstd/common/cpu.h deleted file mode 100644 index 0db7b42407..0000000000 --- a/lib/zstd/common/cpu.h +++ /dev/null @@ -1,194 +0,0 @@ -/* - * Copyright (c) Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTD_COMMON_CPU_H -#define ZSTD_COMMON_CPU_H - -/* - * Implementation taken from folly/CpuId.h - * https://github.com/facebook/folly/blob/master/folly/CpuId.h - */ - -#include "mem.h" - - -typedef struct { - U32 f1c; - U32 f1d; - U32 f7b; - U32 f7c; -} ZSTD_cpuid_t; - -MEM_STATIC ZSTD_cpuid_t ZSTD_cpuid(void) { - U32 f1c = 0; - U32 f1d = 0; - U32 f7b = 0; - U32 f7c = 0; -#if defined(__i386__) && defined(__PIC__) && !defined(__clang__) && defined(__GNUC__) - /* The following block like the normal cpuid branch below, but gcc - * reserves ebx for use of its pic register so we must specially - * handle the save and restore to avoid clobbering the register - */ - U32 n; - __asm__( - "pushl %%ebx\n\t" - "cpuid\n\t" - "popl %%ebx\n\t" - : "=a"(n) - : "a"(0) - : "ecx", "edx"); - if (n >= 1) { - U32 f1a; - __asm__( - "pushl %%ebx\n\t" - "cpuid\n\t" - "popl %%ebx\n\t" - : "=a"(f1a), "=c"(f1c), "=d"(f1d) - : "a"(1)); - } - if (n >= 7) { - __asm__( - "pushl %%ebx\n\t" - "cpuid\n\t" - "movl %%ebx, %%eax\n\t" - "popl %%ebx" - : "=a"(f7b), "=c"(f7c) - : "a"(7), "c"(0) - : "edx"); - } -#elif defined(__x86_64__) || defined(_M_X64) || defined(__i386__) - U32 n; - __asm__("cpuid" : "=a"(n) : "a"(0) : "ebx", "ecx", "edx"); - if (n >= 1) { - U32 f1a; - __asm__("cpuid" : "=a"(f1a), "=c"(f1c), "=d"(f1d) : "a"(1) : "ebx"); - } - if (n >= 7) { - U32 f7a; - __asm__("cpuid" - : "=a"(f7a), "=b"(f7b), "=c"(f7c) - : "a"(7), "c"(0) - : "edx"); - } -#endif - { - ZSTD_cpuid_t cpuid; - cpuid.f1c = f1c; - cpuid.f1d = f1d; - cpuid.f7b = f7b; - cpuid.f7c = f7c; - return cpuid; - } -} - -#define X(name, r, bit) \ - MEM_STATIC int ZSTD_cpuid_##name(ZSTD_cpuid_t const cpuid) { \ - return ((cpuid.r) & (1U << bit)) != 0; \ - } - -/* cpuid(1): Processor Info and Feature Bits. */ -#define C(name, bit) X(name, f1c, bit) - C(sse3, 0) - C(pclmuldq, 1) - C(dtes64, 2) - C(monitor, 3) - C(dscpl, 4) - C(vmx, 5) - C(smx, 6) - C(eist, 7) - C(tm2, 8) - C(ssse3, 9) - C(cnxtid, 10) - C(fma, 12) - C(cx16, 13) - C(xtpr, 14) - C(pdcm, 15) - C(pcid, 17) - C(dca, 18) - C(sse41, 19) - C(sse42, 20) - C(x2apic, 21) - C(movbe, 22) - C(popcnt, 23) - C(tscdeadline, 24) - C(aes, 25) - C(xsave, 26) - C(osxsave, 27) - C(avx, 28) - C(f16c, 29) - C(rdrand, 30) -#undef C -#define D(name, bit) X(name, f1d, bit) - D(fpu, 0) - D(vme, 1) - D(de, 2) - D(pse, 3) - D(tsc, 4) - D(msr, 5) - D(pae, 6) - D(mce, 7) - D(cx8, 8) - D(apic, 9) - D(sep, 11) - D(mtrr, 12) - D(pge, 13) - D(mca, 14) - D(cmov, 15) - D(pat, 16) - D(pse36, 17) - D(psn, 18) - D(clfsh, 19) - D(ds, 21) - D(acpi, 22) - D(mmx, 23) - D(fxsr, 24) - D(sse, 25) - D(sse2, 26) - D(ss, 27) - D(htt, 28) - D(tm, 29) - D(pbe, 31) -#undef D - -/* cpuid(7): Extended Features. */ -#define B(name, bit) X(name, f7b, bit) - B(bmi1, 3) - B(hle, 4) - B(avx2, 5) - B(smep, 7) - B(bmi2, 8) - B(erms, 9) - B(invpcid, 10) - B(rtm, 11) - B(mpx, 14) - B(avx512f, 16) - B(avx512dq, 17) - B(rdseed, 18) - B(adx, 19) - B(smap, 20) - B(avx512ifma, 21) - B(pcommit, 22) - B(clflushopt, 23) - B(clwb, 24) - B(avx512pf, 26) - B(avx512er, 27) - B(avx512cd, 28) - B(sha, 29) - B(avx512bw, 30) - B(avx512vl, 31) -#undef B -#define C(name, bit) X(name, f7c, bit) - C(prefetchwt1, 0) - C(avx512vbmi, 1) -#undef C - -#undef X - -#endif /* ZSTD_COMMON_CPU_H */ diff --git a/lib/zstd/common/debug.c b/lib/zstd/common/debug.c deleted file mode 100644 index bb863c9ea6..0000000000 --- a/lib/zstd/common/debug.c +++ /dev/null @@ -1,24 +0,0 @@ -/* ****************************************************************** - * debug - * Part of FSE library - * Copyright (c) Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - Source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ - - -/* - * This module only hosts one global variable - * which can be used to dynamically influence the verbosity of traces, - * such as DEBUGLOG and RAWLOG - */ - -#include "debug.h" - -int g_debuglevel = DEBUGLEVEL; diff --git a/lib/zstd/common/debug.h b/lib/zstd/common/debug.h deleted file mode 100644 index 6dd88d1fbd..0000000000 --- a/lib/zstd/common/debug.h +++ /dev/null @@ -1,101 +0,0 @@ -/* ****************************************************************** - * debug - * Part of FSE library - * Copyright (c) Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - Source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ - - -/* - * The purpose of this header is to enable debug functions. - * They regroup assert(), DEBUGLOG() and RAWLOG() for run-time, - * and DEBUG_STATIC_ASSERT() for compile-time. - * - * By default, DEBUGLEVEL==0, which means run-time debug is disabled. - * - * Level 1 enables assert() only. - * Starting level 2, traces can be generated and pushed to stderr. - * The higher the level, the more verbose the traces. - * - * It's possible to dynamically adjust level using variable g_debug_level, - * which is only declared if DEBUGLEVEL>=2, - * and is a global variable, not multi-thread protected (use with care) - */ - -#ifndef DEBUG_H_12987983217 -#define DEBUG_H_12987983217 - - - -/* static assert is triggered at compile time, leaving no runtime artefact. - * static assert only works with compile-time constants. - * Also, this variant can only be used inside a function. */ -#define DEBUG_STATIC_ASSERT(c) (void)sizeof(char[(c) ? 1 : -1]) - - -/* DEBUGLEVEL is expected to be defined externally, - * typically through compiler command line. - * Value must be a number. */ -#ifndef DEBUGLEVEL -# define DEBUGLEVEL 0 -#endif - - -/* recommended values for DEBUGLEVEL : - * 0 : release mode, no debug, all run-time checks disabled - * 1 : enables assert() only, no display - * 2 : reserved, for currently active debug path - * 3 : events once per object lifetime (CCtx, CDict, etc.) - * 4 : events once per frame - * 5 : events once per block - * 6 : events once per sequence (verbose) - * 7+: events at every position (*very* verbose) - * - * It's generally inconvenient to output traces > 5. - * In which case, it's possible to selectively trigger high verbosity levels - * by modifying g_debug_level. - */ - -#if (DEBUGLEVEL>=1) -# define ZSTD_DEPS_NEED_ASSERT -# include "zstd_deps.h" -#else -# ifndef assert /* assert may be already defined, due to prior #include <assert.h> */ -# define assert(condition) ((void)0) /* disable assert (default) */ -# endif -#endif - -#if (DEBUGLEVEL>=2) -# define ZSTD_DEPS_NEED_IO -# include "zstd_deps.h" -extern int g_debuglevel; /* the variable is only declared, - it actually lives in debug.c, - and is shared by the whole process. - It's not thread-safe. - It's useful when enabling very verbose levels - on selective conditions (such as position in src) */ - -# define RAWLOG(l, ...) { \ - if (l<=g_debuglevel) { \ - ZSTD_DEBUG_PRINT(__VA_ARGS__); \ - } } -# define DEBUGLOG(l, ...) { \ - if (l<=g_debuglevel) { \ - ZSTD_DEBUG_PRINT(__FILE__ ": " __VA_ARGS__); \ - ZSTD_DEBUG_PRINT(" \n"); \ - } } -#else -# define RAWLOG(l, ...) {} /* disabled */ -# define DEBUGLOG(l, ...) {} /* disabled */ -#endif - - - -#endif /* DEBUG_H_12987983217 */ diff --git a/lib/zstd/common/entropy_common.c b/lib/zstd/common/entropy_common.c deleted file mode 100644 index 53b47a2b52..0000000000 --- a/lib/zstd/common/entropy_common.c +++ /dev/null @@ -1,357 +0,0 @@ -/* ****************************************************************** - * Common functions of New Generation Entropy library - * Copyright (c) Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - FSE+HUF source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - Public forum : https://groups.google.com/forum/#!forum/lz4c - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ - -/* ************************************* -* Dependencies -***************************************/ -#include "mem.h" -#include "error_private.h" /* ERR_*, ERROR */ -#define FSE_STATIC_LINKING_ONLY /* FSE_MIN_TABLELOG */ -#include "fse.h" -#define HUF_STATIC_LINKING_ONLY /* HUF_TABLELOG_ABSOLUTEMAX */ -#include "huf.h" - - -/*=== Version ===*/ -unsigned FSE_versionNumber(void) { return FSE_VERSION_NUMBER; } - - -/*=== Error Management ===*/ -unsigned FSE_isError(size_t code) { return ERR_isError(code); } -const char* FSE_getErrorName(size_t code) { return ERR_getErrorName(code); } - -unsigned HUF_isError(size_t code) { return ERR_isError(code); } -const char* HUF_getErrorName(size_t code) { return ERR_getErrorName(code); } - - -/*-************************************************************** -* FSE NCount encoding-decoding -****************************************************************/ -static U32 FSE_ctz(U32 val) -{ - assert(val != 0); - { -# if (__GNUC__ >= 3) /* GCC Intrinsic */ - return __builtin_ctz(val); -# else /* Software version */ - U32 count = 0; - while ((val & 1) == 0) { - val >>= 1; - ++count; - } - return count; -# endif - } -} - -FORCE_INLINE_TEMPLATE -size_t FSE_readNCount_body(short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr, - const void* headerBuffer, size_t hbSize) -{ - const BYTE* const istart = (const BYTE*) headerBuffer; - const BYTE* const iend = istart + hbSize; - const BYTE* ip = istart; - int nbBits; - int remaining; - int threshold; - U32 bitStream; - int bitCount; - unsigned charnum = 0; - unsigned const maxSV1 = *maxSVPtr + 1; - int previous0 = 0; - - if (hbSize < 8) { - /* This function only works when hbSize >= 8 */ - char buffer[8] = {0}; - ZSTD_memcpy(buffer, headerBuffer, hbSize); - { size_t const countSize = FSE_readNCount(normalizedCounter, maxSVPtr, tableLogPtr, - buffer, sizeof(buffer)); - if (FSE_isError(countSize)) return countSize; - if (countSize > hbSize) return ERROR(corruption_detected); - return countSize; - } } - assert(hbSize >= 8); - - /* init */ - ZSTD_memset(normalizedCounter, 0, (*maxSVPtr+1) * sizeof(normalizedCounter[0])); /* all symbols not present in NCount have a frequency of 0 */ - bitStream = MEM_readLE32(ip); - nbBits = (bitStream & 0xF) + FSE_MIN_TABLELOG; /* extract tableLog */ - if (nbBits > FSE_TABLELOG_ABSOLUTE_MAX) return ERROR(tableLog_tooLarge); - bitStream >>= 4; - bitCount = 4; - *tableLogPtr = nbBits; - remaining = (1<<nbBits)+1; - threshold = 1<<nbBits; - nbBits++; - - for (;;) { - if (previous0) { - /* Count the number of repeats. Each time the - * 2-bit repeat code is 0b11 there is another - * repeat. - * Avoid UB by setting the high bit to 1. - */ - int repeats = FSE_ctz(~bitStream | 0x80000000) >> 1; - while (repeats >= 12) { - charnum += 3 * 12; - if (LIKELY(ip <= iend-7)) { - ip += 3; - } else { - bitCount -= (int)(8 * (iend - 7 - ip)); - bitCount &= 31; - ip = iend - 4; - } - bitStream = MEM_readLE32(ip) >> bitCount; - repeats = FSE_ctz(~bitStream | 0x80000000) >> 1; - } - charnum += 3 * repeats; - bitStream >>= 2 * repeats; - bitCount += 2 * repeats; - - /* Add the final repeat which isn't 0b11. */ - assert((bitStream & 3) < 3); - charnum += bitStream & 3; - bitCount += 2; - - /* This is an error, but break and return an error - * at the end, because returning out of a loop makes - * it harder for the compiler to optimize. - */ - if (charnum >= maxSV1) break; - - /* We don't need to set the normalized count to 0 - * because we already memset the whole buffer to 0. - */ - - if (LIKELY(ip <= iend-7) || (ip + (bitCount>>3) <= iend-4)) { - assert((bitCount >> 3) <= 3); /* For first condition to work */ - ip += bitCount>>3; - bitCount &= 7; - } else { - bitCount -= (int)(8 * (iend - 4 - ip)); - bitCount &= 31; - ip = iend - 4; - } - bitStream = MEM_readLE32(ip) >> bitCount; - } - { - int const max = (2*threshold-1) - remaining; - int count; - - if ((bitStream & (threshold-1)) < (U32)max) { - count = bitStream & (threshold-1); - bitCount += nbBits-1; - } else { - count = bitStream & (2*threshold-1); - if (count >= threshold) count -= max; - bitCount += nbBits; - } - - count--; /* extra accuracy */ - /* When it matters (small blocks), this is a - * predictable branch, because we don't use -1. - */ - if (count >= 0) { - remaining -= count; - } else { - assert(count == -1); - remaining += count; - } - normalizedCounter[charnum++] = (short)count; - previous0 = !count; - - assert(threshold > 1); - if (remaining < threshold) { - /* This branch can be folded into the - * threshold update condition because we - * know that threshold > 1. - */ - if (remaining <= 1) break; - nbBits = BIT_highbit32(remaining) + 1; - threshold = 1 << (nbBits - 1); - } - if (charnum >= maxSV1) break; - - if (LIKELY(ip <= iend-7) || (ip + (bitCount>>3) <= iend-4)) { - ip += bitCount>>3; - bitCount &= 7; - } else { - bitCount -= (int)(8 * (iend - 4 - ip)); - bitCount &= 31; - ip = iend - 4; - } - bitStream = MEM_readLE32(ip) >> bitCount; - } } - if (remaining != 1) return ERROR(corruption_detected); - /* Only possible when there are too many zeros. */ - if (charnum > maxSV1) return ERROR(maxSymbolValue_tooSmall); - if (bitCount > 32) return ERROR(corruption_detected); - *maxSVPtr = charnum-1; - - ip += (bitCount+7)>>3; - return ip-istart; -} - -/* Avoids the FORCE_INLINE of the _body() function. */ -static size_t FSE_readNCount_body_default( - short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr, - const void* headerBuffer, size_t hbSize) -{ - return FSE_readNCount_body(normalizedCounter, maxSVPtr, tableLogPtr, headerBuffer, hbSize); -} - -#if DYNAMIC_BMI2 -TARGET_ATTRIBUTE("bmi2") static size_t FSE_readNCount_body_bmi2( - short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr, - const void* headerBuffer, size_t hbSize) -{ - return FSE_readNCount_body(normalizedCounter, maxSVPtr, tableLogPtr, headerBuffer, hbSize); -} -#endif - -size_t FSE_readNCount_bmi2( - short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr, - const void* headerBuffer, size_t hbSize, int bmi2) -{ -#if DYNAMIC_BMI2 - if (bmi2) { - return FSE_readNCount_body_bmi2(normalizedCounter, maxSVPtr, tableLogPtr, headerBuffer, hbSize); - } -#endif - (void)bmi2; - return FSE_readNCount_body_default(normalizedCounter, maxSVPtr, tableLogPtr, headerBuffer, hbSize); -} - -size_t FSE_readNCount( - short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr, - const void* headerBuffer, size_t hbSize) -{ - return FSE_readNCount_bmi2(normalizedCounter, maxSVPtr, tableLogPtr, headerBuffer, hbSize, /* bmi2 */ 0); -} - - -/*! HUF_readStats() : - Read compact Huffman tree, saved by HUF_writeCTable(). - `huffWeight` is destination buffer. - `rankStats` is assumed to be a table of at least HUF_TABLELOG_MAX U32. - @return : size read from `src` , or an error Code . - Note : Needed by HUF_readCTable() and HUF_readDTableX?() . -*/ -size_t HUF_readStats(BYTE* huffWeight, size_t hwSize, U32* rankStats, - U32* nbSymbolsPtr, U32* tableLogPtr, - const void* src, size_t srcSize) -{ - U32 wksp[HUF_READ_STATS_WORKSPACE_SIZE_U32]; - return HUF_readStats_wksp(huffWeight, hwSize, rankStats, nbSymbolsPtr, tableLogPtr, src, srcSize, wksp, sizeof(wksp), /* bmi2 */ 0); -} - -FORCE_INLINE_TEMPLATE size_t -HUF_readStats_body(BYTE* huffWeight, size_t hwSize, U32* rankStats, - U32* nbSymbolsPtr, U32* tableLogPtr, - const void* src, size_t srcSize, - void* workSpace, size_t wkspSize, - int bmi2) -{ - U32 weightTotal; - const BYTE* ip = (const BYTE*) src; - size_t iSize; - size_t oSize; - - if (!srcSize) return ERROR(srcSize_wrong); - iSize = ip[0]; - /* ZSTD_memset(huffWeight, 0, hwSize); *//* is not necessary, even though some analyzer complain ... */ - - if (iSize >= 128) { /* special header */ - oSize = iSize - 127; - iSize = ((oSize+1)/2); - if (iSize+1 > srcSize) return ERROR(srcSize_wrong); - if (oSize >= hwSize) return ERROR(corruption_detected); - ip += 1; - { U32 n; - for (n=0; n<oSize; n+=2) { - huffWeight[n] = ip[n/2] >> 4; - huffWeight[n+1] = ip[n/2] & 15; - } } } - else { /* header compressed with FSE (normal case) */ - if (iSize+1 > srcSize) return ERROR(srcSize_wrong); - /* max (hwSize-1) values decoded, as last one is implied */ - oSize = FSE_decompress_wksp_bmi2(huffWeight, hwSize-1, ip+1, iSize, 6, workSpace, wkspSize, bmi2); - if (FSE_isError(oSize)) return oSize; - } - - /* collect weight stats */ - ZSTD_memset(rankStats, 0, (HUF_TABLELOG_MAX + 1) * sizeof(U32)); - weightTotal = 0; - { U32 n; for (n=0; n<oSize; n++) { - if (huffWeight[n] >= HUF_TABLELOG_MAX) return ERROR(corruption_detected); - rankStats[huffWeight[n]]++; - weightTotal += (1 << huffWeight[n]) >> 1; - } } - if (weightTotal == 0) return ERROR(corruption_detected); - - /* get last non-null symbol weight (implied, total must be 2^n) */ - { U32 const tableLog = BIT_highbit32(weightTotal) + 1; - if (tableLog > HUF_TABLELOG_MAX) return ERROR(corruption_detected); - *tableLogPtr = tableLog; - /* determine last weight */ - { U32 const total = 1 << tableLog; - U32 const rest = total - weightTotal; - U32 const verif = 1 << BIT_highbit32(rest); - U32 const lastWeight = BIT_highbit32(rest) + 1; - if (verif != rest) return ERROR(corruption_detected); /* last value must be a clean power of 2 */ - huffWeight[oSize] = (BYTE)lastWeight; - rankStats[lastWeight]++; - } } - - /* check tree construction validity */ - if ((rankStats[1] < 2) || (rankStats[1] & 1)) return ERROR(corruption_detected); /* by construction : at least 2 elts of rank 1, must be even */ - - /* results */ - *nbSymbolsPtr = (U32)(oSize+1); - return iSize+1; -} - -/* Avoids the FORCE_INLINE of the _body() function. */ -static size_t HUF_readStats_body_default(BYTE* huffWeight, size_t hwSize, U32* rankStats, - U32* nbSymbolsPtr, U32* tableLogPtr, - const void* src, size_t srcSize, - void* workSpace, size_t wkspSize) -{ - return HUF_readStats_body(huffWeight, hwSize, rankStats, nbSymbolsPtr, tableLogPtr, src, srcSize, workSpace, wkspSize, 0); -} - -#if DYNAMIC_BMI2 -static TARGET_ATTRIBUTE("bmi2") size_t HUF_readStats_body_bmi2(BYTE* huffWeight, size_t hwSize, U32* rankStats, - U32* nbSymbolsPtr, U32* tableLogPtr, - const void* src, size_t srcSize, - void* workSpace, size_t wkspSize) -{ - return HUF_readStats_body(huffWeight, hwSize, rankStats, nbSymbolsPtr, tableLogPtr, src, srcSize, workSpace, wkspSize, 1); -} -#endif - -size_t HUF_readStats_wksp(BYTE* huffWeight, size_t hwSize, U32* rankStats, - U32* nbSymbolsPtr, U32* tableLogPtr, - const void* src, size_t srcSize, - void* workSpace, size_t wkspSize, - int bmi2) -{ -#if DYNAMIC_BMI2 - if (bmi2) { - return HUF_readStats_body_bmi2(huffWeight, hwSize, rankStats, nbSymbolsPtr, tableLogPtr, src, srcSize, workSpace, wkspSize); - } -#endif - (void)bmi2; - return HUF_readStats_body_default(huffWeight, hwSize, rankStats, nbSymbolsPtr, tableLogPtr, src, srcSize, workSpace, wkspSize); -} diff --git a/lib/zstd/common/error_private.c b/lib/zstd/common/error_private.c deleted file mode 100644 index 6d1135f8c3..0000000000 --- a/lib/zstd/common/error_private.c +++ /dev/null @@ -1,56 +0,0 @@ -/* - * Copyright (c) Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -/* The purpose of this file is to have a single list of error strings embedded in binary */ - -#include "error_private.h" - -const char* ERR_getErrorString(ERR_enum code) -{ -#ifdef ZSTD_STRIP_ERROR_STRINGS - (void)code; - return "Error strings stripped"; -#else - static const char* const notErrorCode = "Unspecified error code"; - switch( code ) - { - case PREFIX(no_error): return "No error detected"; - case PREFIX(GENERIC): return "Error (generic)"; - case PREFIX(prefix_unknown): return "Unknown frame descriptor"; - case PREFIX(version_unsupported): return "Version not supported"; - case PREFIX(frameParameter_unsupported): return "Unsupported frame parameter"; - case PREFIX(frameParameter_windowTooLarge): return "Frame requires too much memory for decoding"; - case PREFIX(corruption_detected): return "Corrupted block detected"; - case PREFIX(checksum_wrong): return "Restored data doesn't match checksum"; - case PREFIX(parameter_unsupported): return "Unsupported parameter"; - case PREFIX(parameter_outOfBound): return "Parameter is out of bound"; - case PREFIX(init_missing): return "Context should be init first"; - case PREFIX(memory_allocation): return "Allocation error : not enough memory"; - case PREFIX(workSpace_tooSmall): return "workSpace buffer is not large enough"; - case PREFIX(stage_wrong): return "Operation not authorized at current processing stage"; - case PREFIX(tableLog_tooLarge): return "tableLog requires too much memory : unsupported"; - case PREFIX(maxSymbolValue_tooLarge): return "Unsupported max Symbol Value : too large"; - case PREFIX(maxSymbolValue_tooSmall): return "Specified maxSymbolValue is too small"; - case PREFIX(dictionary_corrupted): return "Dictionary is corrupted"; - case PREFIX(dictionary_wrong): return "Dictionary mismatch"; - case PREFIX(dictionaryCreation_failed): return "Cannot create Dictionary from provided samples"; - case PREFIX(dstSize_tooSmall): return "Destination buffer is too small"; - case PREFIX(srcSize_wrong): return "Src size is incorrect"; - case PREFIX(dstBuffer_null): return "Operation on NULL destination buffer"; - /* following error codes are not stable and may be removed or changed in a future version */ - case PREFIX(frameIndex_tooLarge): return "Frame index is too large"; - case PREFIX(seekableIO): return "An I/O error occurred when reading/seeking"; - case PREFIX(dstBuffer_wrong): return "Destination buffer is wrong"; - case PREFIX(srcBuffer_wrong): return "Source buffer is wrong"; - case PREFIX(maxCode): - default: return notErrorCode; - } -#endif -} diff --git a/lib/zstd/common/error_private.h b/lib/zstd/common/error_private.h deleted file mode 100644 index bb60835cac..0000000000 --- a/lib/zstd/common/error_private.h +++ /dev/null @@ -1,69 +0,0 @@ -/* - * Copyright (c) Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -/* Note : this module is expected to remain private, do not expose it */ - -#ifndef ERROR_H_MODULE -#define ERROR_H_MODULE - -#ifdef __PBL__ -#define ZSTD_STRIP_ERROR_STRINGS -#endif - - -/* **************************************** -* Dependencies -******************************************/ -#include "zstd_deps.h" /* size_t */ -#include <linux/zstd_errors.h> /* enum list */ - - -/* **************************************** -* Compiler-specific -******************************************/ -#define ERR_STATIC static __attribute__((unused)) - - -/*-**************************************** -* Customization (error_public.h) -******************************************/ -typedef ZSTD_ErrorCode ERR_enum; -#define PREFIX(name) ZSTD_error_##name - - -/*-**************************************** -* Error codes handling -******************************************/ -#undef ERROR /* already defined on Visual Studio */ -#define ERROR(name) ZSTD_ERROR(name) -#define ZSTD_ERROR(name) ((size_t)-PREFIX(name)) - -ERR_STATIC unsigned ERR_isError(size_t code) { return (code > ERROR(maxCode)); } - -ERR_STATIC ERR_enum ERR_getErrorCode(size_t code) { if (!ERR_isError(code)) return (ERR_enum)0; return (ERR_enum) (0-code); } - -/* check and forward error code */ -#define CHECK_V_F(e, f) size_t const e = f; if (ERR_isError(e)) return e -#define CHECK_F(f) { CHECK_V_F(_var_err__, f); } - - -/*-**************************************** -* Error Strings -******************************************/ - -const char* ERR_getErrorString(ERR_enum code); /* error_private.c */ - -ERR_STATIC const char* ERR_getErrorName(size_t code) -{ - return ERR_getErrorString(ERR_getErrorCode(code)); -} - - -#endif /* ERROR_H_MODULE */ diff --git a/lib/zstd/common/fse.h b/lib/zstd/common/fse.h deleted file mode 100644 index 0bb174c2c3..0000000000 --- a/lib/zstd/common/fse.h +++ /dev/null @@ -1,710 +0,0 @@ -/* ****************************************************************** - * FSE : Finite State Entropy codec - * Public Prototypes declaration - * Copyright (c) Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - Source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ - - -#ifndef FSE_H -#define FSE_H - - -/*-***************************************** -* Dependencies -******************************************/ -#include "zstd_deps.h" /* size_t, ptrdiff_t */ - - -/*-***************************************** -* FSE_PUBLIC_API : control library symbols visibility -******************************************/ -#if defined(FSE_DLL_EXPORT) && (FSE_DLL_EXPORT==1) && defined(__GNUC__) && (__GNUC__ >= 4) -# define FSE_PUBLIC_API __attribute__ ((visibility ("default"))) -#elif defined(FSE_DLL_EXPORT) && (FSE_DLL_EXPORT==1) /* Visual expected */ -# define FSE_PUBLIC_API __declspec(dllexport) -#elif defined(FSE_DLL_IMPORT) && (FSE_DLL_IMPORT==1) -# define FSE_PUBLIC_API __declspec(dllimport) /* It isn't required but allows to generate better code, saving a function pointer load from the IAT and an indirect jump.*/ -#else -# define FSE_PUBLIC_API -#endif - -/*------ Version ------*/ -#define FSE_VERSION_MAJOR 0 -#define FSE_VERSION_MINOR 9 -#define FSE_VERSION_RELEASE 0 - -#define FSE_LIB_VERSION FSE_VERSION_MAJOR.FSE_VERSION_MINOR.FSE_VERSION_RELEASE -#define FSE_QUOTE(str) #str -#define FSE_EXPAND_AND_QUOTE(str) FSE_QUOTE(str) -#define FSE_VERSION_STRING FSE_EXPAND_AND_QUOTE(FSE_LIB_VERSION) - -#define FSE_VERSION_NUMBER (FSE_VERSION_MAJOR *100*100 + FSE_VERSION_MINOR *100 + FSE_VERSION_RELEASE) -FSE_PUBLIC_API unsigned FSE_versionNumber(void); /*< library version number; to be used when checking dll version */ - - -/*-**************************************** -* FSE simple functions -******************************************/ -/*! FSE_compress() : - Compress content of buffer 'src', of size 'srcSize', into destination buffer 'dst'. - 'dst' buffer must be already allocated. Compression runs faster is dstCapacity >= FSE_compressBound(srcSize). - @return : size of compressed data (<= dstCapacity). - Special values : if return == 0, srcData is not compressible => Nothing is stored within dst !!! - if return == 1, srcData is a single byte symbol * srcSize times. Use RLE compression instead. - if FSE_isError(return), compression failed (more details using FSE_getErrorName()) -*/ -FSE_PUBLIC_API size_t FSE_compress(void* dst, size_t dstCapacity, - const void* src, size_t srcSize); - -/*! FSE_decompress(): - Decompress FSE data from buffer 'cSrc', of size 'cSrcSize', - into already allocated destination buffer 'dst', of size 'dstCapacity'. - @return : size of regenerated data (<= maxDstSize), - or an error code, which can be tested using FSE_isError() . - - ** Important ** : FSE_decompress() does not decompress non-compressible nor RLE data !!! - Why ? : making this distinction requires a header. - Header management is intentionally delegated to the user layer, which can better manage special cases. -*/ -FSE_PUBLIC_API size_t FSE_decompress(void* dst, size_t dstCapacity, - const void* cSrc, size_t cSrcSize); - - -/*-***************************************** -* Tool functions -******************************************/ -FSE_PUBLIC_API size_t FSE_compressBound(size_t size); /* maximum compressed size */ - -/* Error Management */ -FSE_PUBLIC_API unsigned FSE_isError(size_t code); /* tells if a return value is an error code */ -FSE_PUBLIC_API const char* FSE_getErrorName(size_t code); /* provides error code string (useful for debugging) */ - - -/*-***************************************** -* FSE advanced functions -******************************************/ -/*! FSE_compress2() : - Same as FSE_compress(), but allows the selection of 'maxSymbolValue' and 'tableLog' - Both parameters can be defined as '0' to mean : use default value - @return : size of compressed data - Special values : if return == 0, srcData is not compressible => Nothing is stored within cSrc !!! - if return == 1, srcData is a single byte symbol * srcSize times. Use RLE compression. - if FSE_isError(return), it's an error code. -*/ -FSE_PUBLIC_API size_t FSE_compress2 (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog); - - -/*-***************************************** -* FSE detailed API -******************************************/ -/*! -FSE_compress() does the following: -1. count symbol occurrence from source[] into table count[] (see hist.h) -2. normalize counters so that sum(count[]) == Power_of_2 (2^tableLog) -3. save normalized counters to memory buffer using writeNCount() -4. build encoding table 'CTable' from normalized counters -5. encode the data stream using encoding table 'CTable' - -FSE_decompress() does the following: -1. read normalized counters with readNCount() -2. build decoding table 'DTable' from normalized counters -3. decode the data stream using decoding table 'DTable' - -The following API allows targeting specific sub-functions for advanced tasks. -For example, it's possible to compress several blocks using the same 'CTable', -or to save and provide normalized distribution using external method. -*/ - -/* *** COMPRESSION *** */ - -/*! FSE_optimalTableLog(): - dynamically downsize 'tableLog' when conditions are met. - It saves CPU time, by using smaller tables, while preserving or even improving compression ratio. - @return : recommended tableLog (necessarily <= 'maxTableLog') */ -FSE_PUBLIC_API unsigned FSE_optimalTableLog(unsigned maxTableLog, size_t srcSize, unsigned maxSymbolValue); - -/*! FSE_normalizeCount(): - normalize counts so that sum(count[]) == Power_of_2 (2^tableLog) - 'normalizedCounter' is a table of short, of minimum size (maxSymbolValue+1). - useLowProbCount is a boolean parameter which trades off compressed size for - faster header decoding. When it is set to 1, the compressed data will be slightly - smaller. And when it is set to 0, FSE_readNCount() and FSE_buildDTable() will be - faster. If you are compressing a small amount of data (< 2 KB) then useLowProbCount=0 - is a good default, since header deserialization makes a big speed difference. - Otherwise, useLowProbCount=1 is a good default, since the speed difference is small. - @return : tableLog, - or an errorCode, which can be tested using FSE_isError() */ -FSE_PUBLIC_API size_t FSE_normalizeCount(short* normalizedCounter, unsigned tableLog, - const unsigned* count, size_t srcSize, unsigned maxSymbolValue, unsigned useLowProbCount); - -/*! FSE_NCountWriteBound(): - Provides the maximum possible size of an FSE normalized table, given 'maxSymbolValue' and 'tableLog'. - Typically useful for allocation purpose. */ -FSE_PUBLIC_API size_t FSE_NCountWriteBound(unsigned maxSymbolValue, unsigned tableLog); - -/*! FSE_writeNCount(): - Compactly save 'normalizedCounter' into 'buffer'. - @return : size of the compressed table, - or an errorCode, which can be tested using FSE_isError(). */ -FSE_PUBLIC_API size_t FSE_writeNCount (void* buffer, size_t bufferSize, - const short* normalizedCounter, - unsigned maxSymbolValue, unsigned tableLog); - -/*! Constructor and Destructor of FSE_CTable. - Note that FSE_CTable size depends on 'tableLog' and 'maxSymbolValue' */ -typedef unsigned FSE_CTable; /* don't allocate that. It's only meant to be more restrictive than void* */ -FSE_PUBLIC_API FSE_CTable* FSE_createCTable (unsigned maxSymbolValue, unsigned tableLog); -FSE_PUBLIC_API void FSE_freeCTable (FSE_CTable* ct); - -/*! FSE_buildCTable(): - Builds `ct`, which must be already allocated, using FSE_createCTable(). - @return : 0, or an errorCode, which can be tested using FSE_isError() */ -FSE_PUBLIC_API size_t FSE_buildCTable(FSE_CTable* ct, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog); - -/*! FSE_compress_usingCTable(): - Compress `src` using `ct` into `dst` which must be already allocated. - @return : size of compressed data (<= `dstCapacity`), - or 0 if compressed data could not fit into `dst`, - or an errorCode, which can be tested using FSE_isError() */ -FSE_PUBLIC_API size_t FSE_compress_usingCTable (void* dst, size_t dstCapacity, const void* src, size_t srcSize, const FSE_CTable* ct); - -/*! -Tutorial : ----------- -The first step is to count all symbols. FSE_count() does this job very fast. -Result will be saved into 'count', a table of unsigned int, which must be already allocated, and have 'maxSymbolValuePtr[0]+1' cells. -'src' is a table of bytes of size 'srcSize'. All values within 'src' MUST be <= maxSymbolValuePtr[0] -maxSymbolValuePtr[0] will be updated, with its real value (necessarily <= original value) -FSE_count() will return the number of occurrence of the most frequent symbol. -This can be used to know if there is a single symbol within 'src', and to quickly evaluate its compressibility. -If there is an error, the function will return an ErrorCode (which can be tested using FSE_isError()). - -The next step is to normalize the frequencies. -FSE_normalizeCount() will ensure that sum of frequencies is == 2 ^'tableLog'. -It also guarantees a minimum of 1 to any Symbol with frequency >= 1. -You can use 'tableLog'==0 to mean "use default tableLog value". -If you are unsure of which tableLog value to use, you can ask FSE_optimalTableLog(), -which will provide the optimal valid tableLog given sourceSize, maxSymbolValue, and a user-defined maximum (0 means "default"). - -The result of FSE_normalizeCount() will be saved into a table, -called 'normalizedCounter', which is a table of signed short. -'normalizedCounter' must be already allocated, and have at least 'maxSymbolValue+1' cells. -The return value is tableLog if everything proceeded as expected. -It is 0 if there is a single symbol within distribution. -If there is an error (ex: invalid tableLog value), the function will return an ErrorCode (which can be tested using FSE_isError()). - -'normalizedCounter' can be saved in a compact manner to a memory area using FSE_writeNCount(). -'buffer' must be already allocated. -For guaranteed success, buffer size must be at least FSE_headerBound(). -The result of the function is the number of bytes written into 'buffer'. -If there is an error, the function will return an ErrorCode (which can be tested using FSE_isError(); ex : buffer size too small). - -'normalizedCounter' can then be used to create the compression table 'CTable'. -The space required by 'CTable' must be already allocated, using FSE_createCTable(). -You can then use FSE_buildCTable() to fill 'CTable'. -If there is an error, both functions will return an ErrorCode (which can be tested using FSE_isError()). - -'CTable' can then be used to compress 'src', with FSE_compress_usingCTable(). -Similar to FSE_count(), the convention is that 'src' is assumed to be a table of char of size 'srcSize' -The function returns the size of compressed data (without header), necessarily <= `dstCapacity`. -If it returns '0', compressed data could not fit into 'dst'. -If there is an error, the function will return an ErrorCode (which can be tested using FSE_isError()). -*/ - - -/* *** DECOMPRESSION *** */ - -/*! FSE_readNCount(): - Read compactly saved 'normalizedCounter' from 'rBuffer'. - @return : size read from 'rBuffer', - or an errorCode, which can be tested using FSE_isError(). - maxSymbolValuePtr[0] and tableLogPtr[0] will also be updated with their respective values */ -FSE_PUBLIC_API size_t FSE_readNCount (short* normalizedCounter, - unsigned* maxSymbolValuePtr, unsigned* tableLogPtr, - const void* rBuffer, size_t rBuffSize); - -/*! FSE_readNCount_bmi2(): - * Same as FSE_readNCount() but pass bmi2=1 when your CPU supports BMI2 and 0 otherwise. - */ -FSE_PUBLIC_API size_t FSE_readNCount_bmi2(short* normalizedCounter, - unsigned* maxSymbolValuePtr, unsigned* tableLogPtr, - const void* rBuffer, size_t rBuffSize, int bmi2); - -/*! Constructor and Destructor of FSE_DTable. - Note that its size depends on 'tableLog' */ -typedef unsigned FSE_DTable; /* don't allocate that. It's just a way to be more restrictive than void* */ -FSE_PUBLIC_API FSE_DTable* FSE_createDTable(unsigned tableLog); -FSE_PUBLIC_API void FSE_freeDTable(FSE_DTable* dt); - -/*! FSE_buildDTable(): - Builds 'dt', which must be already allocated, using FSE_createDTable(). - return : 0, or an errorCode, which can be tested using FSE_isError() */ -FSE_PUBLIC_API size_t FSE_buildDTable (FSE_DTable* dt, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog); - -/*! FSE_decompress_usingDTable(): - Decompress compressed source `cSrc` of size `cSrcSize` using `dt` - into `dst` which must be already allocated. - @return : size of regenerated data (necessarily <= `dstCapacity`), - or an errorCode, which can be tested using FSE_isError() */ -FSE_PUBLIC_API size_t FSE_decompress_usingDTable(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, const FSE_DTable* dt); - -/*! -Tutorial : ----------- -(Note : these functions only decompress FSE-compressed blocks. - If block is uncompressed, use memcpy() instead - If block is a single repeated byte, use memset() instead ) - -The first step is to obtain the normalized frequencies of symbols. -This can be performed by FSE_readNCount() if it was saved using FSE_writeNCount(). -'normalizedCounter' must be already allocated, and have at least 'maxSymbolValuePtr[0]+1' cells of signed short. -In practice, that means it's necessary to know 'maxSymbolValue' beforehand, -or size the table to handle worst case situations (typically 256). -FSE_readNCount() will provide 'tableLog' and 'maxSymbolValue'. -The result of FSE_readNCount() is the number of bytes read from 'rBuffer'. -Note that 'rBufferSize' must be at least 4 bytes, even if useful information is less than that. -If there is an error, the function will return an error code, which can be tested using FSE_isError(). - -The next step is to build the decompression tables 'FSE_DTable' from 'normalizedCounter'. -This is performed by the function FSE_buildDTable(). -The space required by 'FSE_DTable' must be already allocated using FSE_createDTable(). -If there is an error, the function will return an error code, which can be tested using FSE_isError(). - -`FSE_DTable` can then be used to decompress `cSrc`, with FSE_decompress_usingDTable(). -`cSrcSize` must be strictly correct, otherwise decompression will fail. -FSE_decompress_usingDTable() result will tell how many bytes were regenerated (<=`dstCapacity`). -If there is an error, the function will return an error code, which can be tested using FSE_isError(). (ex: dst buffer too small) -*/ - -#endif /* FSE_H */ - -#if !defined(FSE_H_FSE_STATIC_LINKING_ONLY) -#define FSE_H_FSE_STATIC_LINKING_ONLY - -/* *** Dependency *** */ -#include "bitstream.h" - - -/* ***************************************** -* Static allocation -*******************************************/ -/* FSE buffer bounds */ -#define FSE_NCOUNTBOUND 512 -#define FSE_BLOCKBOUND(size) ((size) + ((size)>>7) + 4 /* fse states */ + sizeof(size_t) /* bitContainer */) -#define FSE_COMPRESSBOUND(size) (FSE_NCOUNTBOUND + FSE_BLOCKBOUND(size)) /* Macro version, useful for static allocation */ - -/* It is possible to statically allocate FSE CTable/DTable as a table of FSE_CTable/FSE_DTable using below macros */ -#define FSE_CTABLE_SIZE_U32(maxTableLog, maxSymbolValue) (1 + (1<<((maxTableLog)-1)) + (((maxSymbolValue)+1)*2)) -#define FSE_DTABLE_SIZE_U32(maxTableLog) (1 + (1<<(maxTableLog))) - -/* or use the size to malloc() space directly. Pay attention to alignment restrictions though */ -#define FSE_CTABLE_SIZE(maxTableLog, maxSymbolValue) (FSE_CTABLE_SIZE_U32(maxTableLog, maxSymbolValue) * sizeof(FSE_CTable)) -#define FSE_DTABLE_SIZE(maxTableLog) (FSE_DTABLE_SIZE_U32(maxTableLog) * sizeof(FSE_DTable)) - - -/* ***************************************** - * FSE advanced API - ***************************************** */ - -unsigned FSE_optimalTableLog_internal(unsigned maxTableLog, size_t srcSize, unsigned maxSymbolValue, unsigned minus); -/*< same as FSE_optimalTableLog(), which used `minus==2` */ - -/* FSE_compress_wksp() : - * Same as FSE_compress2(), but using an externally allocated scratch buffer (`workSpace`). - * FSE_COMPRESS_WKSP_SIZE_U32() provides the minimum size required for `workSpace` as a table of FSE_CTable. - */ -#define FSE_COMPRESS_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) ( FSE_CTABLE_SIZE_U32(maxTableLog, maxSymbolValue) + ((maxTableLog > 12) ? (1 << (maxTableLog - 2)) : 1024) ) -size_t FSE_compress_wksp (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize); - -size_t FSE_buildCTable_raw (FSE_CTable* ct, unsigned nbBits); -/*< build a fake FSE_CTable, designed for a flat distribution, where each symbol uses nbBits */ - -size_t FSE_buildCTable_rle (FSE_CTable* ct, unsigned char symbolValue); -/*< build a fake FSE_CTable, designed to compress always the same symbolValue */ - -/* FSE_buildCTable_wksp() : - * Same as FSE_buildCTable(), but using an externally allocated scratch buffer (`workSpace`). - * `wkspSize` must be >= `FSE_BUILD_CTABLE_WORKSPACE_SIZE_U32(maxSymbolValue, tableLog)` of `unsigned`. - */ -#define FSE_BUILD_CTABLE_WORKSPACE_SIZE_U32(maxSymbolValue, tableLog) (maxSymbolValue + 2 + (1ull << (tableLog - 2))) -#define FSE_BUILD_CTABLE_WORKSPACE_SIZE(maxSymbolValue, tableLog) (sizeof(unsigned) * FSE_BUILD_CTABLE_WORKSPACE_SIZE_U32(maxSymbolValue, tableLog)) -size_t FSE_buildCTable_wksp(FSE_CTable* ct, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize); - -#define FSE_BUILD_DTABLE_WKSP_SIZE(maxTableLog, maxSymbolValue) (sizeof(short) * (maxSymbolValue + 1) + (1ULL << maxTableLog) + 8) -#define FSE_BUILD_DTABLE_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) ((FSE_BUILD_DTABLE_WKSP_SIZE(maxTableLog, maxSymbolValue) + sizeof(unsigned) - 1) / sizeof(unsigned)) -FSE_PUBLIC_API size_t FSE_buildDTable_wksp(FSE_DTable* dt, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize); -/*< Same as FSE_buildDTable(), using an externally allocated `workspace` produced with `FSE_BUILD_DTABLE_WKSP_SIZE_U32(maxSymbolValue)` */ - -size_t FSE_buildDTable_raw (FSE_DTable* dt, unsigned nbBits); -/*< build a fake FSE_DTable, designed to read a flat distribution where each symbol uses nbBits */ - -size_t FSE_buildDTable_rle (FSE_DTable* dt, unsigned char symbolValue); -/*< build a fake FSE_DTable, designed to always generate the same symbolValue */ - -#define FSE_DECOMPRESS_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) (FSE_DTABLE_SIZE_U32(maxTableLog) + FSE_BUILD_DTABLE_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) + (FSE_MAX_SYMBOL_VALUE + 1) / 2 + 1) -#define FSE_DECOMPRESS_WKSP_SIZE(maxTableLog, maxSymbolValue) (FSE_DECOMPRESS_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) * sizeof(unsigned)) -size_t FSE_decompress_wksp(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize); -/*< same as FSE_decompress(), using an externally allocated `workSpace` produced with `FSE_DECOMPRESS_WKSP_SIZE_U32(maxLog, maxSymbolValue)` */ - -size_t FSE_decompress_wksp_bmi2(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize, int bmi2); -/*< Same as FSE_decompress_wksp() but with dynamic BMI2 support. Pass 1 if your CPU supports BMI2 or 0 if it doesn't. */ - -typedef enum { - FSE_repeat_none, /*< Cannot use the previous table */ - FSE_repeat_check, /*< Can use the previous table but it must be checked */ - FSE_repeat_valid /*< Can use the previous table and it is assumed to be valid */ - } FSE_repeat; - -/* ***************************************** -* FSE symbol compression API -*******************************************/ -/*! - This API consists of small unitary functions, which highly benefit from being inlined. - Hence their body are included in next section. -*/ -typedef struct { - ptrdiff_t value; - const void* stateTable; - const void* symbolTT; - unsigned stateLog; -} FSE_CState_t; - -static void FSE_initCState(FSE_CState_t* CStatePtr, const FSE_CTable* ct); - -static void FSE_encodeSymbol(BIT_CStream_t* bitC, FSE_CState_t* CStatePtr, unsigned symbol); - -static void FSE_flushCState(BIT_CStream_t* bitC, const FSE_CState_t* CStatePtr); - -/*< -These functions are inner components of FSE_compress_usingCTable(). -They allow the creation of custom streams, mixing multiple tables and bit sources. - -A key property to keep in mind is that encoding and decoding are done **in reverse direction**. -So the first symbol you will encode is the last you will decode, like a LIFO stack. - -You will need a few variables to track your CStream. They are : - -FSE_CTable ct; // Provided by FSE_buildCTable() -BIT_CStream_t bitStream; // bitStream tracking structure -FSE_CState_t state; // State tracking structure (can have several) - - -The first thing to do is to init bitStream and state. - size_t errorCode = BIT_initCStream(&bitStream, dstBuffer, maxDstSize); - FSE_initCState(&state, ct); - -Note that BIT_initCStream() can produce an error code, so its result should be tested, using FSE_isError(); -You can then encode your input data, byte after byte. -FSE_encodeSymbol() outputs a maximum of 'tableLog' bits at a time. -Remember decoding will be done in reverse direction. - FSE_encodeByte(&bitStream, &state, symbol); - -At any time, you can also add any bit sequence. -Note : maximum allowed nbBits is 25, for compatibility with 32-bits decoders - BIT_addBits(&bitStream, bitField, nbBits); - -The above methods don't commit data to memory, they just store it into local register, for speed. -Local register size is 64-bits on 64-bits systems, 32-bits on 32-bits systems (size_t). -Writing data to memory is a manual operation, performed by the flushBits function. - BIT_flushBits(&bitStream); - -Your last FSE encoding operation shall be to flush your last state value(s). - FSE_flushState(&bitStream, &state); - -Finally, you must close the bitStream. -The function returns the size of CStream in bytes. -If data couldn't fit into dstBuffer, it will return a 0 ( == not compressible) -If there is an error, it returns an errorCode (which can be tested using FSE_isError()). - size_t size = BIT_closeCStream(&bitStream); -*/ - - -/* ***************************************** -* FSE symbol decompression API -*******************************************/ -typedef struct { - size_t state; - const void* table; /* precise table may vary, depending on U16 */ -} FSE_DState_t; - - -static void FSE_initDState(FSE_DState_t* DStatePtr, BIT_DStream_t* bitD, const FSE_DTable* dt); - -static unsigned char FSE_decodeSymbol(FSE_DState_t* DStatePtr, BIT_DStream_t* bitD); - -static unsigned FSE_endOfDState(const FSE_DState_t* DStatePtr); - -/*< -Let's now decompose FSE_decompress_usingDTable() into its unitary components. -You will decode FSE-encoded symbols from the bitStream, -and also any other bitFields you put in, **in reverse order**. - -You will need a few variables to track your bitStream. They are : - -BIT_DStream_t DStream; // Stream context -FSE_DState_t DState; // State context. Multiple ones are possible -FSE_DTable* DTablePtr; // Decoding table, provided by FSE_buildDTable() - -The first thing to do is to init the bitStream. - errorCode = BIT_initDStream(&DStream, srcBuffer, srcSize); - -You should then retrieve your initial state(s) -(in reverse flushing order if you have several ones) : - errorCode = FSE_initDState(&DState, &DStream, DTablePtr); - -You can then decode your data, symbol after symbol. -For information the maximum number of bits read by FSE_decodeSymbol() is 'tableLog'. -Keep in mind that symbols are decoded in reverse order, like a LIFO stack (last in, first out). - unsigned char symbol = FSE_decodeSymbol(&DState, &DStream); - -You can retrieve any bitfield you eventually stored into the bitStream (in reverse order) -Note : maximum allowed nbBits is 25, for 32-bits compatibility - size_t bitField = BIT_readBits(&DStream, nbBits); - -All above operations only read from local register (which size depends on size_t). -Refueling the register from memory is manually performed by the reload method. - endSignal = FSE_reloadDStream(&DStream); - -BIT_reloadDStream() result tells if there is still some more data to read from DStream. -BIT_DStream_unfinished : there is still some data left into the DStream. -BIT_DStream_endOfBuffer : Dstream reached end of buffer. Its container may no longer be completely filled. -BIT_DStream_completed : Dstream reached its exact end, corresponding in general to decompression completed. -BIT_DStream_tooFar : Dstream went too far. Decompression result is corrupted. - -When reaching end of buffer (BIT_DStream_endOfBuffer), progress slowly, notably if you decode multiple symbols per loop, -to properly detect the exact end of stream. -After each decoded symbol, check if DStream is fully consumed using this simple test : - BIT_reloadDStream(&DStream) >= BIT_DStream_completed - -When it's done, verify decompression is fully completed, by checking both DStream and the relevant states. -Checking if DStream has reached its end is performed by : - BIT_endOfDStream(&DStream); -Check also the states. There might be some symbols left there, if some high probability ones (>50%) are possible. - FSE_endOfDState(&DState); -*/ - - -/* ***************************************** -* FSE unsafe API -*******************************************/ -static unsigned char FSE_decodeSymbolFast(FSE_DState_t* DStatePtr, BIT_DStream_t* bitD); -/* faster, but works only if nbBits is always >= 1 (otherwise, result will be corrupted) */ - - -/* ***************************************** -* Implementation of inlined functions -*******************************************/ -typedef struct { - int deltaFindState; - U32 deltaNbBits; -} FSE_symbolCompressionTransform; /* total 8 bytes */ - -MEM_STATIC void FSE_initCState(FSE_CState_t* statePtr, const FSE_CTable* ct) -{ - const void* ptr = ct; - const U16* u16ptr = (const U16*) ptr; - const U32 tableLog = MEM_read16(ptr); - statePtr->value = (ptrdiff_t)1<<tableLog; - statePtr->stateTable = u16ptr+2; - statePtr->symbolTT = ct + 1 + (tableLog ? (1<<(tableLog-1)) : 1); - statePtr->stateLog = tableLog; -} - - -/*! FSE_initCState2() : -* Same as FSE_initCState(), but the first symbol to include (which will be the last to be read) -* uses the smallest state value possible, saving the cost of this symbol */ -MEM_STATIC void FSE_initCState2(FSE_CState_t* statePtr, const FSE_CTable* ct, U32 symbol) -{ - FSE_initCState(statePtr, ct); - { const FSE_symbolCompressionTransform symbolTT = ((const FSE_symbolCompressionTransform*)(statePtr->symbolTT))[symbol]; - const U16* stateTable = (const U16*)(statePtr->stateTable); - U32 nbBitsOut = (U32)((symbolTT.deltaNbBits + (1<<15)) >> 16); - statePtr->value = (nbBitsOut << 16) - symbolTT.deltaNbBits; - statePtr->value = stateTable[(statePtr->value >> nbBitsOut) + symbolTT.deltaFindState]; - } -} - -MEM_STATIC void FSE_encodeSymbol(BIT_CStream_t* bitC, FSE_CState_t* statePtr, unsigned symbol) -{ - FSE_symbolCompressionTransform const symbolTT = ((const FSE_symbolCompressionTransform*)(statePtr->symbolTT))[symbol]; - const U16* const stateTable = (const U16*)(statePtr->stateTable); - U32 const nbBitsOut = (U32)((statePtr->value + symbolTT.deltaNbBits) >> 16); - BIT_addBits(bitC, statePtr->value, nbBitsOut); - statePtr->value = stateTable[ (statePtr->value >> nbBitsOut) + symbolTT.deltaFindState]; -} - -MEM_STATIC void FSE_flushCState(BIT_CStream_t* bitC, const FSE_CState_t* statePtr) -{ - BIT_addBits(bitC, statePtr->value, statePtr->stateLog); - BIT_flushBits(bitC); -} - - -/* FSE_getMaxNbBits() : - * Approximate maximum cost of a symbol, in bits. - * Fractional get rounded up (i.e : a symbol with a normalized frequency of 3 gives the same result as a frequency of 2) - * note 1 : assume symbolValue is valid (<= maxSymbolValue) - * note 2 : if freq[symbolValue]==0, @return a fake cost of tableLog+1 bits */ -MEM_STATIC U32 FSE_getMaxNbBits(const void* symbolTTPtr, U32 symbolValue) -{ - const FSE_symbolCompressionTransform* symbolTT = (const FSE_symbolCompressionTransform*) symbolTTPtr; - return (symbolTT[symbolValue].deltaNbBits + ((1<<16)-1)) >> 16; -} - -/* FSE_bitCost() : - * Approximate symbol cost, as fractional value, using fixed-point format (accuracyLog fractional bits) - * note 1 : assume symbolValue is valid (<= maxSymbolValue) - * note 2 : if freq[symbolValue]==0, @return a fake cost of tableLog+1 bits */ -MEM_STATIC U32 FSE_bitCost(const void* symbolTTPtr, U32 tableLog, U32 symbolValue, U32 accuracyLog) -{ - const FSE_symbolCompressionTransform* symbolTT = (const FSE_symbolCompressionTransform*) symbolTTPtr; - U32 const minNbBits = symbolTT[symbolValue].deltaNbBits >> 16; - U32 const threshold = (minNbBits+1) << 16; - assert(tableLog < 16); - assert(accuracyLog < 31-tableLog); /* ensure enough room for renormalization double shift */ - { U32 const tableSize = 1 << tableLog; - U32 const deltaFromThreshold = threshold - (symbolTT[symbolValue].deltaNbBits + tableSize); - U32 const normalizedDeltaFromThreshold = (deltaFromThreshold << accuracyLog) >> tableLog; /* linear interpolation (very approximate) */ - U32 const bitMultiplier = 1 << accuracyLog; - assert(symbolTT[symbolValue].deltaNbBits + tableSize <= threshold); - assert(normalizedDeltaFromThreshold <= bitMultiplier); - return (minNbBits+1)*bitMultiplier - normalizedDeltaFromThreshold; - } -} - - -/* ====== Decompression ====== */ - -typedef struct { - U16 tableLog; - U16 fastMode; -} FSE_DTableHeader; /* sizeof U32 */ - -typedef struct -{ - unsigned short newState; - unsigned char symbol; - unsigned char nbBits; -} FSE_decode_t; /* size == U32 */ - -MEM_STATIC void FSE_initDState(FSE_DState_t* DStatePtr, BIT_DStream_t* bitD, const FSE_DTable* dt) -{ - const void* ptr = dt; - const FSE_DTableHeader* const DTableH = (const FSE_DTableHeader*)ptr; - DStatePtr->state = BIT_readBits(bitD, DTableH->tableLog); - BIT_reloadDStream(bitD); - DStatePtr->table = dt + 1; -} - -MEM_STATIC BYTE FSE_peekSymbol(const FSE_DState_t* DStatePtr) -{ - FSE_decode_t const DInfo = ((const FSE_decode_t*)(DStatePtr->table))[DStatePtr->state]; - return DInfo.symbol; -} - -MEM_STATIC void FSE_updateState(FSE_DState_t* DStatePtr, BIT_DStream_t* bitD) -{ - FSE_decode_t const DInfo = ((const FSE_decode_t*)(DStatePtr->table))[DStatePtr->state]; - U32 const nbBits = DInfo.nbBits; - size_t const lowBits = BIT_readBits(bitD, nbBits); - DStatePtr->state = DInfo.newState + lowBits; -} - -MEM_STATIC BYTE FSE_decodeSymbol(FSE_DState_t* DStatePtr, BIT_DStream_t* bitD) -{ - FSE_decode_t const DInfo = ((const FSE_decode_t*)(DStatePtr->table))[DStatePtr->state]; - U32 const nbBits = DInfo.nbBits; - BYTE const symbol = DInfo.symbol; - size_t const lowBits = BIT_readBits(bitD, nbBits); - - DStatePtr->state = DInfo.newState + lowBits; - return symbol; -} - -/*! FSE_decodeSymbolFast() : - unsafe, only works if no symbol has a probability > 50% */ -MEM_STATIC BYTE FSE_decodeSymbolFast(FSE_DState_t* DStatePtr, BIT_DStream_t* bitD) -{ - FSE_decode_t const DInfo = ((const FSE_decode_t*)(DStatePtr->table))[DStatePtr->state]; - U32 const nbBits = DInfo.nbBits; - BYTE const symbol = DInfo.symbol; - size_t const lowBits = BIT_readBitsFast(bitD, nbBits); - - DStatePtr->state = DInfo.newState + lowBits; - return symbol; -} - -MEM_STATIC unsigned FSE_endOfDState(const FSE_DState_t* DStatePtr) -{ - return DStatePtr->state == 0; -} - - - -#ifndef FSE_COMMONDEFS_ONLY - -/* ************************************************************** -* Tuning parameters -****************************************************************/ -/*!MEMORY_USAGE : -* Memory usage formula : N->2^N Bytes (examples : 10 -> 1KB; 12 -> 4KB ; 16 -> 64KB; 20 -> 1MB; etc.) -* Increasing memory usage improves compression ratio -* Reduced memory usage can improve speed, due to cache effect -* Recommended max value is 14, for 16KB, which nicely fits into Intel x86 L1 cache */ -#ifndef FSE_MAX_MEMORY_USAGE -# define FSE_MAX_MEMORY_USAGE 14 -#endif -#ifndef FSE_DEFAULT_MEMORY_USAGE -# define FSE_DEFAULT_MEMORY_USAGE 13 -#endif -#if (FSE_DEFAULT_MEMORY_USAGE > FSE_MAX_MEMORY_USAGE) -# error "FSE_DEFAULT_MEMORY_USAGE must be <= FSE_MAX_MEMORY_USAGE" -#endif - -/*!FSE_MAX_SYMBOL_VALUE : -* Maximum symbol value authorized. -* Required for proper stack allocation */ -#ifndef FSE_MAX_SYMBOL_VALUE -# define FSE_MAX_SYMBOL_VALUE 255 -#endif - -/* ************************************************************** -* template functions type & suffix -****************************************************************/ -#define FSE_FUNCTION_TYPE BYTE -#define FSE_FUNCTION_EXTENSION -#define FSE_DECODE_TYPE FSE_decode_t - - -#endif /* !FSE_COMMONDEFS_ONLY */ - - -/* *************************************************************** -* Constants -*****************************************************************/ -#define FSE_MAX_TABLELOG (FSE_MAX_MEMORY_USAGE-2) -#define FSE_MAX_TABLESIZE (1U<<FSE_MAX_TABLELOG) -#define FSE_MAXTABLESIZE_MASK (FSE_MAX_TABLESIZE-1) -#define FSE_DEFAULT_TABLELOG (FSE_DEFAULT_MEMORY_USAGE-2) -#define FSE_MIN_TABLELOG 5 - -#define FSE_TABLELOG_ABSOLUTE_MAX 15 -#if FSE_MAX_TABLELOG > FSE_TABLELOG_ABSOLUTE_MAX -# error "FSE_MAX_TABLELOG > FSE_TABLELOG_ABSOLUTE_MAX is not supported" -#endif - -#define FSE_TABLESTEP(tableSize) (((tableSize)>>1) + ((tableSize)>>3) + 3) - - -#endif /* FSE_STATIC_LINKING_ONLY */ - - diff --git a/lib/zstd/common/fse_decompress.c b/lib/zstd/common/fse_decompress.c deleted file mode 100644 index 2c8bbe3e4c..0000000000 --- a/lib/zstd/common/fse_decompress.c +++ /dev/null @@ -1,390 +0,0 @@ -/* ****************************************************************** - * FSE : Finite State Entropy decoder - * Copyright (c) Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - FSE source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - Public forum : https://groups.google.com/forum/#!forum/lz4c - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ - - -/* ************************************************************** -* Includes -****************************************************************/ -#include "debug.h" /* assert */ -#include "bitstream.h" -#include "compiler.h" -#define FSE_STATIC_LINKING_ONLY -#include "fse.h" -#include "error_private.h" -#define ZSTD_DEPS_NEED_MALLOC -#include "zstd_deps.h" - - -/* ************************************************************** -* Error Management -****************************************************************/ -#define FSE_isError ERR_isError -#define FSE_STATIC_ASSERT(c) DEBUG_STATIC_ASSERT(c) /* use only *after* variable declarations */ - - -/* ************************************************************** -* Templates -****************************************************************/ -/* - designed to be included - for type-specific functions (template emulation in C) - Objective is to write these functions only once, for improved maintenance -*/ - -/* safety checks */ -#ifndef FSE_FUNCTION_EXTENSION -# error "FSE_FUNCTION_EXTENSION must be defined" -#endif -#ifndef FSE_FUNCTION_TYPE -# error "FSE_FUNCTION_TYPE must be defined" -#endif - -/* Function names */ -#define FSE_CAT(X,Y) X##Y -#define FSE_FUNCTION_NAME(X,Y) FSE_CAT(X,Y) -#define FSE_TYPE_NAME(X,Y) FSE_CAT(X,Y) - - -/* Function templates */ -FSE_DTable* FSE_createDTable (unsigned tableLog) -{ - if (tableLog > FSE_TABLELOG_ABSOLUTE_MAX) tableLog = FSE_TABLELOG_ABSOLUTE_MAX; - return (FSE_DTable*)ZSTD_malloc( FSE_DTABLE_SIZE_U32(tableLog) * sizeof (U32) ); -} - -void FSE_freeDTable (FSE_DTable* dt) -{ - ZSTD_free(dt); -} - -static size_t FSE_buildDTable_internal(FSE_DTable* dt, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize) -{ - void* const tdPtr = dt+1; /* because *dt is unsigned, 32-bits aligned on 32-bits */ - FSE_DECODE_TYPE* const tableDecode = (FSE_DECODE_TYPE*) (tdPtr); - U16* symbolNext = (U16*)workSpace; - BYTE* spread = (BYTE*)(symbolNext + maxSymbolValue + 1); - - U32 const maxSV1 = maxSymbolValue + 1; - U32 const tableSize = 1 << tableLog; - U32 highThreshold = tableSize-1; - - /* Sanity Checks */ - if (FSE_BUILD_DTABLE_WKSP_SIZE(tableLog, maxSymbolValue) > wkspSize) return ERROR(maxSymbolValue_tooLarge); - if (maxSymbolValue > FSE_MAX_SYMBOL_VALUE) return ERROR(maxSymbolValue_tooLarge); - if (tableLog > FSE_MAX_TABLELOG) return ERROR(tableLog_tooLarge); - - /* Init, lay down lowprob symbols */ - { FSE_DTableHeader DTableH; - DTableH.tableLog = (U16)tableLog; - DTableH.fastMode = 1; - { S16 const largeLimit= (S16)(1 << (tableLog-1)); - U32 s; - for (s=0; s<maxSV1; s++) { - if (normalizedCounter[s]==-1) { - tableDecode[highThreshold--].symbol = (FSE_FUNCTION_TYPE)s; - symbolNext[s] = 1; - } else { - if (normalizedCounter[s] >= largeLimit) DTableH.fastMode=0; - symbolNext[s] = normalizedCounter[s]; - } } } - ZSTD_memcpy(dt, &DTableH, sizeof(DTableH)); - } - - /* Spread symbols */ - if (highThreshold == tableSize - 1) { - size_t const tableMask = tableSize-1; - size_t const step = FSE_TABLESTEP(tableSize); - /* First lay down the symbols in order. - * We use a uint64_t to lay down 8 bytes at a time. This reduces branch - * misses since small blocks generally have small table logs, so nearly - * all symbols have counts <= 8. We ensure we have 8 bytes at the end of - * our buffer to handle the over-write. - */ - { - U64 const add = 0x0101010101010101ull; - size_t pos = 0; - U64 sv = 0; - U32 s; - for (s=0; s<maxSV1; ++s, sv += add) { - int i; - int const n = normalizedCounter[s]; - MEM_write64(spread + pos, sv); - for (i = 8; i < n; i += 8) { - MEM_write64(spread + pos + i, sv); - } - pos += n; - } - } - /* Now we spread those positions across the table. - * The benefit of doing it in two stages is that we avoid the the - * variable size inner loop, which caused lots of branch misses. - * Now we can run through all the positions without any branch misses. - * We unroll the loop twice, since that is what emperically worked best. - */ - { - size_t position = 0; - size_t s; - size_t const unroll = 2; - assert(tableSize % unroll == 0); /* FSE_MIN_TABLELOG is 5 */ - for (s = 0; s < (size_t)tableSize; s += unroll) { - size_t u; - for (u = 0; u < unroll; ++u) { - size_t const uPosition = (position + (u * step)) & tableMask; - tableDecode[uPosition].symbol = spread[s + u]; - } - position = (position + (unroll * step)) & tableMask; - } - assert(position == 0); - } - } else { - U32 const tableMask = tableSize-1; - U32 const step = FSE_TABLESTEP(tableSize); - U32 s, position = 0; - for (s=0; s<maxSV1; s++) { - int i; - for (i=0; i<normalizedCounter[s]; i++) { - tableDecode[position].symbol = (FSE_FUNCTION_TYPE)s; - position = (position + step) & tableMask; - while (position > highThreshold) position = (position + step) & tableMask; /* lowprob area */ - } } - if (position!=0) return ERROR(GENERIC); /* position must reach all cells once, otherwise normalizedCounter is incorrect */ - } - - /* Build Decoding table */ - { U32 u; - for (u=0; u<tableSize; u++) { - FSE_FUNCTION_TYPE const symbol = (FSE_FUNCTION_TYPE)(tableDecode[u].symbol); - U32 const nextState = symbolNext[symbol]++; - tableDecode[u].nbBits = (BYTE) (tableLog - BIT_highbit32(nextState) ); - tableDecode[u].newState = (U16) ( (nextState << tableDecode[u].nbBits) - tableSize); - } } - - return 0; -} - -size_t FSE_buildDTable_wksp(FSE_DTable* dt, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize) -{ - return FSE_buildDTable_internal(dt, normalizedCounter, maxSymbolValue, tableLog, workSpace, wkspSize); -} - - -#ifndef FSE_COMMONDEFS_ONLY - -/*-******************************************************* -* Decompression (Byte symbols) -*********************************************************/ -size_t FSE_buildDTable_rle (FSE_DTable* dt, BYTE symbolValue) -{ - void* ptr = dt; - FSE_DTableHeader* const DTableH = (FSE_DTableHeader*)ptr; - void* dPtr = dt + 1; - FSE_decode_t* const cell = (FSE_decode_t*)dPtr; - - DTableH->tableLog = 0; - DTableH->fastMode = 0; - - cell->newState = 0; - cell->symbol = symbolValue; - cell->nbBits = 0; - - return 0; -} - - -size_t FSE_buildDTable_raw (FSE_DTable* dt, unsigned nbBits) -{ - void* ptr = dt; - FSE_DTableHeader* const DTableH = (FSE_DTableHeader*)ptr; - void* dPtr = dt + 1; - FSE_decode_t* const dinfo = (FSE_decode_t*)dPtr; - const unsigned tableSize = 1 << nbBits; - const unsigned tableMask = tableSize - 1; - const unsigned maxSV1 = tableMask+1; - unsigned s; - - /* Sanity checks */ - if (nbBits < 1) return ERROR(GENERIC); /* min size */ - - /* Build Decoding Table */ - DTableH->tableLog = (U16)nbBits; - DTableH->fastMode = 1; - for (s=0; s<maxSV1; s++) { - dinfo[s].newState = 0; - dinfo[s].symbol = (BYTE)s; - dinfo[s].nbBits = (BYTE)nbBits; - } - - return 0; -} - -FORCE_INLINE_TEMPLATE size_t FSE_decompress_usingDTable_generic( - void* dst, size_t maxDstSize, - const void* cSrc, size_t cSrcSize, - const FSE_DTable* dt, const unsigned fast) -{ - BYTE* const ostart = (BYTE*) dst; - BYTE* op = ostart; - BYTE* const omax = op + maxDstSize; - BYTE* const olimit = omax-3; - - BIT_DStream_t bitD; - FSE_DState_t state1; - FSE_DState_t state2; - - /* Init */ - CHECK_F(BIT_initDStream(&bitD, cSrc, cSrcSize)); - - FSE_initDState(&state1, &bitD, dt); - FSE_initDState(&state2, &bitD, dt); - -#define FSE_GETSYMBOL(statePtr) fast ? FSE_decodeSymbolFast(statePtr, &bitD) : FSE_decodeSymbol(statePtr, &bitD) - - /* 4 symbols per loop */ - for ( ; (BIT_reloadDStream(&bitD)==BIT_DStream_unfinished) & (op<olimit) ; op+=4) { - op[0] = FSE_GETSYMBOL(&state1); - - if (FSE_MAX_TABLELOG*2+7 > sizeof(bitD.bitContainer)*8) /* This test must be static */ - BIT_reloadDStream(&bitD); - - op[1] = FSE_GETSYMBOL(&state2); - - if (FSE_MAX_TABLELOG*4+7 > sizeof(bitD.bitContainer)*8) /* This test must be static */ - { if (BIT_reloadDStream(&bitD) > BIT_DStream_unfinished) { op+=2; break; } } - - op[2] = FSE_GETSYMBOL(&state1); - - if (FSE_MAX_TABLELOG*2+7 > sizeof(bitD.bitContainer)*8) /* This test must be static */ - BIT_reloadDStream(&bitD); - - op[3] = FSE_GETSYMBOL(&state2); - } - - /* tail */ - /* note : BIT_reloadDStream(&bitD) >= FSE_DStream_partiallyFilled; Ends at exactly BIT_DStream_completed */ - while (1) { - if (op>(omax-2)) return ERROR(dstSize_tooSmall); - *op++ = FSE_GETSYMBOL(&state1); - if (BIT_reloadDStream(&bitD)==BIT_DStream_overflow) { - *op++ = FSE_GETSYMBOL(&state2); - break; - } - - if (op>(omax-2)) return ERROR(dstSize_tooSmall); - *op++ = FSE_GETSYMBOL(&state2); - if (BIT_reloadDStream(&bitD)==BIT_DStream_overflow) { - *op++ = FSE_GETSYMBOL(&state1); - break; - } } - - return op-ostart; -} - - -size_t FSE_decompress_usingDTable(void* dst, size_t originalSize, - const void* cSrc, size_t cSrcSize, - const FSE_DTable* dt) -{ - const void* ptr = dt; - const FSE_DTableHeader* DTableH = (const FSE_DTableHeader*)ptr; - const U32 fastMode = DTableH->fastMode; - - /* select fast mode (static) */ - if (fastMode) return FSE_decompress_usingDTable_generic(dst, originalSize, cSrc, cSrcSize, dt, 1); - return FSE_decompress_usingDTable_generic(dst, originalSize, cSrc, cSrcSize, dt, 0); -} - - -size_t FSE_decompress_wksp(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize) -{ - return FSE_decompress_wksp_bmi2(dst, dstCapacity, cSrc, cSrcSize, maxLog, workSpace, wkspSize, /* bmi2 */ 0); -} - -typedef struct { - short ncount[FSE_MAX_SYMBOL_VALUE + 1]; - FSE_DTable dtable[1]; /* Dynamically sized */ -} FSE_DecompressWksp; - - -FORCE_INLINE_TEMPLATE size_t FSE_decompress_wksp_body( - void* dst, size_t dstCapacity, - const void* cSrc, size_t cSrcSize, - unsigned maxLog, void* workSpace, size_t wkspSize, - int bmi2) -{ - const BYTE* const istart = (const BYTE*)cSrc; - const BYTE* ip = istart; - unsigned tableLog; - unsigned maxSymbolValue = FSE_MAX_SYMBOL_VALUE; - FSE_DecompressWksp* const wksp = (FSE_DecompressWksp*)workSpace; - - DEBUG_STATIC_ASSERT((FSE_MAX_SYMBOL_VALUE + 1) % 2 == 0); - if (wkspSize < sizeof(*wksp)) return ERROR(GENERIC); - - /* normal FSE decoding mode */ - { - size_t const NCountLength = FSE_readNCount_bmi2(wksp->ncount, &maxSymbolValue, &tableLog, istart, cSrcSize, bmi2); - if (FSE_isError(NCountLength)) return NCountLength; - if (tableLog > maxLog) return ERROR(tableLog_tooLarge); - assert(NCountLength <= cSrcSize); - ip += NCountLength; - cSrcSize -= NCountLength; - } - - if (FSE_DECOMPRESS_WKSP_SIZE(tableLog, maxSymbolValue) > wkspSize) return ERROR(tableLog_tooLarge); - workSpace = wksp->dtable + FSE_DTABLE_SIZE_U32(tableLog); - wkspSize -= sizeof(*wksp) + FSE_DTABLE_SIZE(tableLog); - - CHECK_F( FSE_buildDTable_internal(wksp->dtable, wksp->ncount, maxSymbolValue, tableLog, workSpace, wkspSize) ); - - { - const void* ptr = wksp->dtable; - const FSE_DTableHeader* DTableH = (const FSE_DTableHeader*)ptr; - const U32 fastMode = DTableH->fastMode; - - /* select fast mode (static) */ - if (fastMode) return FSE_decompress_usingDTable_generic(dst, dstCapacity, ip, cSrcSize, wksp->dtable, 1); - return FSE_decompress_usingDTable_generic(dst, dstCapacity, ip, cSrcSize, wksp->dtable, 0); - } -} - -/* Avoids the FORCE_INLINE of the _body() function. */ -static size_t FSE_decompress_wksp_body_default(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize) -{ - return FSE_decompress_wksp_body(dst, dstCapacity, cSrc, cSrcSize, maxLog, workSpace, wkspSize, 0); -} - -#if DYNAMIC_BMI2 -TARGET_ATTRIBUTE("bmi2") static size_t FSE_decompress_wksp_body_bmi2(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize) -{ - return FSE_decompress_wksp_body(dst, dstCapacity, cSrc, cSrcSize, maxLog, workSpace, wkspSize, 1); -} -#endif - -size_t FSE_decompress_wksp_bmi2(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize, int bmi2) -{ -#if DYNAMIC_BMI2 - if (bmi2) { - return FSE_decompress_wksp_body_bmi2(dst, dstCapacity, cSrc, cSrcSize, maxLog, workSpace, wkspSize); - } -#endif - (void)bmi2; - return FSE_decompress_wksp_body_default(dst, dstCapacity, cSrc, cSrcSize, maxLog, workSpace, wkspSize); -} - - -typedef FSE_DTable DTable_max_t[FSE_DTABLE_SIZE_U32(FSE_MAX_TABLELOG)]; - - - -#endif /* FSE_COMMONDEFS_ONLY */ diff --git a/lib/zstd/common/huf.h b/lib/zstd/common/huf.h deleted file mode 100644 index 88c5586646..0000000000 --- a/lib/zstd/common/huf.h +++ /dev/null @@ -1,356 +0,0 @@ -/* ****************************************************************** - * huff0 huffman codec, - * part of Finite State Entropy library - * Copyright (c) Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - Source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ - - -#ifndef HUF_H_298734234 -#define HUF_H_298734234 - -/* *** Dependencies *** */ -#include "zstd_deps.h" /* size_t */ - - -/* *** library symbols visibility *** */ -/* Note : when linking with -fvisibility=hidden on gcc, or by default on Visual, - * HUF symbols remain "private" (internal symbols for library only). - * Set macro FSE_DLL_EXPORT to 1 if you want HUF symbols visible on DLL interface */ -#if defined(FSE_DLL_EXPORT) && (FSE_DLL_EXPORT==1) && defined(__GNUC__) && (__GNUC__ >= 4) -# define HUF_PUBLIC_API __attribute__ ((visibility ("default"))) -#elif defined(FSE_DLL_EXPORT) && (FSE_DLL_EXPORT==1) /* Visual expected */ -# define HUF_PUBLIC_API __declspec(dllexport) -#elif defined(FSE_DLL_IMPORT) && (FSE_DLL_IMPORT==1) -# define HUF_PUBLIC_API __declspec(dllimport) /* not required, just to generate faster code (saves a function pointer load from IAT and an indirect jump) */ -#else -# define HUF_PUBLIC_API -#endif - - -/* ========================== */ -/* *** simple functions *** */ -/* ========================== */ - -/* HUF_compress() : - * Compress content from buffer 'src', of size 'srcSize', into buffer 'dst'. - * 'dst' buffer must be already allocated. - * Compression runs faster if `dstCapacity` >= HUF_compressBound(srcSize). - * `srcSize` must be <= `HUF_BLOCKSIZE_MAX` == 128 KB. - * @return : size of compressed data (<= `dstCapacity`). - * Special values : if return == 0, srcData is not compressible => Nothing is stored within dst !!! - * if HUF_isError(return), compression failed (more details using HUF_getErrorName()) - */ -HUF_PUBLIC_API size_t HUF_compress(void* dst, size_t dstCapacity, - const void* src, size_t srcSize); - -/* HUF_decompress() : - * Decompress HUF data from buffer 'cSrc', of size 'cSrcSize', - * into already allocated buffer 'dst', of minimum size 'dstSize'. - * `originalSize` : **must** be the ***exact*** size of original (uncompressed) data. - * Note : in contrast with FSE, HUF_decompress can regenerate - * RLE (cSrcSize==1) and uncompressed (cSrcSize==dstSize) data, - * because it knows size to regenerate (originalSize). - * @return : size of regenerated data (== originalSize), - * or an error code, which can be tested using HUF_isError() - */ -HUF_PUBLIC_API size_t HUF_decompress(void* dst, size_t originalSize, - const void* cSrc, size_t cSrcSize); - - -/* *** Tool functions *** */ -#define HUF_BLOCKSIZE_MAX (128 * 1024) /*< maximum input size for a single block compressed with HUF_compress */ -HUF_PUBLIC_API size_t HUF_compressBound(size_t size); /*< maximum compressed size (worst case) */ - -/* Error Management */ -HUF_PUBLIC_API unsigned HUF_isError(size_t code); /*< tells if a return value is an error code */ -HUF_PUBLIC_API const char* HUF_getErrorName(size_t code); /*< provides error code string (useful for debugging) */ - - -/* *** Advanced function *** */ - -/* HUF_compress2() : - * Same as HUF_compress(), but offers control over `maxSymbolValue` and `tableLog`. - * `maxSymbolValue` must be <= HUF_SYMBOLVALUE_MAX . - * `tableLog` must be `<= HUF_TABLELOG_MAX` . */ -HUF_PUBLIC_API size_t HUF_compress2 (void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - unsigned maxSymbolValue, unsigned tableLog); - -/* HUF_compress4X_wksp() : - * Same as HUF_compress2(), but uses externally allocated `workSpace`. - * `workspace` must have minimum alignment of 4, and be at least as large as HUF_WORKSPACE_SIZE */ -#define HUF_WORKSPACE_SIZE ((6 << 10) + 256) -#define HUF_WORKSPACE_SIZE_U32 (HUF_WORKSPACE_SIZE / sizeof(U32)) -HUF_PUBLIC_API size_t HUF_compress4X_wksp (void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - unsigned maxSymbolValue, unsigned tableLog, - void* workSpace, size_t wkspSize); - -#endif /* HUF_H_298734234 */ - -/* ****************************************************************** - * WARNING !! - * The following section contains advanced and experimental definitions - * which shall never be used in the context of a dynamic library, - * because they are not guaranteed to remain stable in the future. - * Only consider them in association with static linking. - * *****************************************************************/ -#if !defined(HUF_H_HUF_STATIC_LINKING_ONLY) -#define HUF_H_HUF_STATIC_LINKING_ONLY - -/* *** Dependencies *** */ -#include "mem.h" /* U32 */ -#define FSE_STATIC_LINKING_ONLY -#include "fse.h" - - -/* *** Constants *** */ -#define HUF_TABLELOG_MAX 12 /* max runtime value of tableLog (due to static allocation); can be modified up to HUF_ABSOLUTEMAX_TABLELOG */ -#define HUF_TABLELOG_DEFAULT 11 /* default tableLog value when none specified */ -#define HUF_SYMBOLVALUE_MAX 255 - -#define HUF_TABLELOG_ABSOLUTEMAX 15 /* absolute limit of HUF_MAX_TABLELOG. Beyond that value, code does not work */ -#if (HUF_TABLELOG_MAX > HUF_TABLELOG_ABSOLUTEMAX) -# error "HUF_TABLELOG_MAX is too large !" -#endif - - -/* **************************************** -* Static allocation -******************************************/ -/* HUF buffer bounds */ -#define HUF_CTABLEBOUND 129 -#define HUF_BLOCKBOUND(size) (size + (size>>8) + 8) /* only true when incompressible is pre-filtered with fast heuristic */ -#define HUF_COMPRESSBOUND(size) (HUF_CTABLEBOUND + HUF_BLOCKBOUND(size)) /* Macro version, useful for static allocation */ - -/* static allocation of HUF's Compression Table */ -/* this is a private definition, just exposed for allocation and strict aliasing purpose. never EVER access its members directly */ -struct HUF_CElt_s { - U16 val; - BYTE nbBits; -}; /* typedef'd to HUF_CElt */ -typedef struct HUF_CElt_s HUF_CElt; /* consider it an incomplete type */ -#define HUF_CTABLE_SIZE_U32(maxSymbolValue) ((maxSymbolValue)+1) /* Use tables of U32, for proper alignment */ -#define HUF_CTABLE_SIZE(maxSymbolValue) (HUF_CTABLE_SIZE_U32(maxSymbolValue) * sizeof(U32)) -#define HUF_CREATE_STATIC_CTABLE(name, maxSymbolValue) \ - HUF_CElt name[HUF_CTABLE_SIZE_U32(maxSymbolValue)] /* no final ; */ - -/* static allocation of HUF's DTable */ -typedef U32 HUF_DTable; -#define HUF_DTABLE_SIZE(maxTableLog) (1 + (1<<(maxTableLog))) -#define HUF_CREATE_STATIC_DTABLEX1(DTable, maxTableLog) \ - HUF_DTable DTable[HUF_DTABLE_SIZE((maxTableLog)-1)] = { ((U32)((maxTableLog)-1) * 0x01000001) } -#define HUF_CREATE_STATIC_DTABLEX2(DTable, maxTableLog) \ - HUF_DTable DTable[HUF_DTABLE_SIZE(maxTableLog)] = { ((U32)(maxTableLog) * 0x01000001) } - - -/* **************************************** -* Advanced decompression functions -******************************************/ -size_t HUF_decompress4X1 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< single-symbol decoder */ -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_decompress4X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< double-symbols decoder */ -#endif - -size_t HUF_decompress4X_DCtx (HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< decodes RLE and uncompressed */ -size_t HUF_decompress4X_hufOnly(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< considers RLE and uncompressed as errors */ -size_t HUF_decompress4X_hufOnly_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /*< considers RLE and uncompressed as errors */ -size_t HUF_decompress4X1_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< single-symbol decoder */ -size_t HUF_decompress4X1_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /*< single-symbol decoder */ -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_decompress4X2_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< double-symbols decoder */ -size_t HUF_decompress4X2_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /*< double-symbols decoder */ -#endif - - -/* **************************************** - * HUF detailed API - * ****************************************/ - -/*! HUF_compress() does the following: - * 1. count symbol occurrence from source[] into table count[] using FSE_count() (exposed within "fse.h") - * 2. (optional) refine tableLog using HUF_optimalTableLog() - * 3. build Huffman table from count using HUF_buildCTable() - * 4. save Huffman table to memory buffer using HUF_writeCTable() - * 5. encode the data stream using HUF_compress4X_usingCTable() - * - * The following API allows targeting specific sub-functions for advanced tasks. - * For example, it's possible to compress several blocks using the same 'CTable', - * or to save and regenerate 'CTable' using external methods. - */ -unsigned HUF_optimalTableLog(unsigned maxTableLog, size_t srcSize, unsigned maxSymbolValue); -size_t HUF_buildCTable (HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue, unsigned maxNbBits); /* @return : maxNbBits; CTable and count can overlap. In which case, CTable will overwrite count content */ -size_t HUF_writeCTable (void* dst, size_t maxDstSize, const HUF_CElt* CTable, unsigned maxSymbolValue, unsigned huffLog); -size_t HUF_writeCTable_wksp(void* dst, size_t maxDstSize, const HUF_CElt* CTable, unsigned maxSymbolValue, unsigned huffLog, void* workspace, size_t workspaceSize); -size_t HUF_compress4X_usingCTable(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable); -size_t HUF_estimateCompressedSize(const HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue); -int HUF_validateCTable(const HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue); - -typedef enum { - HUF_repeat_none, /*< Cannot use the previous table */ - HUF_repeat_check, /*< Can use the previous table but it must be checked. Note : The previous table must have been constructed by HUF_compress{1, 4}X_repeat */ - HUF_repeat_valid /*< Can use the previous table and it is assumed to be valid */ - } HUF_repeat; -/* HUF_compress4X_repeat() : - * Same as HUF_compress4X_wksp(), but considers using hufTable if *repeat != HUF_repeat_none. - * If it uses hufTable it does not modify hufTable or repeat. - * If it doesn't, it sets *repeat = HUF_repeat_none, and it sets hufTable to the table used. - * If preferRepeat then the old table will always be used if valid. */ -size_t HUF_compress4X_repeat(void* dst, size_t dstSize, - const void* src, size_t srcSize, - unsigned maxSymbolValue, unsigned tableLog, - void* workSpace, size_t wkspSize, /*< `workSpace` must be aligned on 4-bytes boundaries, `wkspSize` must be >= HUF_WORKSPACE_SIZE */ - HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2); - -/* HUF_buildCTable_wksp() : - * Same as HUF_buildCTable(), but using externally allocated scratch buffer. - * `workSpace` must be aligned on 4-bytes boundaries, and its size must be >= HUF_CTABLE_WORKSPACE_SIZE. - */ -#define HUF_CTABLE_WORKSPACE_SIZE_U32 (2*HUF_SYMBOLVALUE_MAX +1 +1) -#define HUF_CTABLE_WORKSPACE_SIZE (HUF_CTABLE_WORKSPACE_SIZE_U32 * sizeof(unsigned)) -size_t HUF_buildCTable_wksp (HUF_CElt* tree, - const unsigned* count, U32 maxSymbolValue, U32 maxNbBits, - void* workSpace, size_t wkspSize); - -/*! HUF_readStats() : - * Read compact Huffman tree, saved by HUF_writeCTable(). - * `huffWeight` is destination buffer. - * @return : size read from `src` , or an error Code . - * Note : Needed by HUF_readCTable() and HUF_readDTableXn() . */ -size_t HUF_readStats(BYTE* huffWeight, size_t hwSize, - U32* rankStats, U32* nbSymbolsPtr, U32* tableLogPtr, - const void* src, size_t srcSize); - -/*! HUF_readStats_wksp() : - * Same as HUF_readStats() but takes an external workspace which must be - * 4-byte aligned and its size must be >= HUF_READ_STATS_WORKSPACE_SIZE. - * If the CPU has BMI2 support, pass bmi2=1, otherwise pass bmi2=0. - */ -#define HUF_READ_STATS_WORKSPACE_SIZE_U32 FSE_DECOMPRESS_WKSP_SIZE_U32(6, HUF_TABLELOG_MAX-1) -#define HUF_READ_STATS_WORKSPACE_SIZE (HUF_READ_STATS_WORKSPACE_SIZE_U32 * sizeof(unsigned)) -size_t HUF_readStats_wksp(BYTE* huffWeight, size_t hwSize, - U32* rankStats, U32* nbSymbolsPtr, U32* tableLogPtr, - const void* src, size_t srcSize, - void* workspace, size_t wkspSize, - int bmi2); - -/* HUF_readCTable() : - * Loading a CTable saved with HUF_writeCTable() */ -size_t HUF_readCTable (HUF_CElt* CTable, unsigned* maxSymbolValuePtr, const void* src, size_t srcSize, unsigned *hasZeroWeights); - -/* HUF_getNbBits() : - * Read nbBits from CTable symbolTable, for symbol `symbolValue` presumed <= HUF_SYMBOLVALUE_MAX - * Note 1 : is not inlined, as HUF_CElt definition is private - * Note 2 : const void* used, so that it can provide a statically allocated table as argument (which uses type U32) */ -U32 HUF_getNbBits(const void* symbolTable, U32 symbolValue); - -/* - * HUF_decompress() does the following: - * 1. select the decompression algorithm (X1, X2) based on pre-computed heuristics - * 2. build Huffman table from save, using HUF_readDTableX?() - * 3. decode 1 or 4 segments in parallel using HUF_decompress?X?_usingDTable() - */ - -/* HUF_selectDecoder() : - * Tells which decoder is likely to decode faster, - * based on a set of pre-computed metrics. - * @return : 0==HUF_decompress4X1, 1==HUF_decompress4X2 . - * Assumption : 0 < dstSize <= 128 KB */ -U32 HUF_selectDecoder (size_t dstSize, size_t cSrcSize); - -/* - * The minimum workspace size for the `workSpace` used in - * HUF_readDTableX1_wksp() and HUF_readDTableX2_wksp(). - * - * The space used depends on HUF_TABLELOG_MAX, ranging from ~1500 bytes when - * HUF_TABLE_LOG_MAX=12 to ~1850 bytes when HUF_TABLE_LOG_MAX=15. - * Buffer overflow errors may potentially occur if code modifications result in - * a required workspace size greater than that specified in the following - * macro. - */ -#define HUF_DECOMPRESS_WORKSPACE_SIZE ((2 << 10) + (1 << 9)) -#define HUF_DECOMPRESS_WORKSPACE_SIZE_U32 (HUF_DECOMPRESS_WORKSPACE_SIZE / sizeof(U32)) - -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_readDTableX1 (HUF_DTable* DTable, const void* src, size_t srcSize); -size_t HUF_readDTableX1_wksp (HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize); -#endif -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_readDTableX2 (HUF_DTable* DTable, const void* src, size_t srcSize); -size_t HUF_readDTableX2_wksp (HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize); -#endif - -size_t HUF_decompress4X_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_decompress4X1_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); -#endif -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_decompress4X2_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); -#endif - - -/* ====================== */ -/* single stream variants */ -/* ====================== */ - -size_t HUF_compress1X (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog); -size_t HUF_compress1X_wksp (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize); /*< `workSpace` must be a table of at least HUF_WORKSPACE_SIZE_U32 unsigned */ -size_t HUF_compress1X_usingCTable(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable); -/* HUF_compress1X_repeat() : - * Same as HUF_compress1X_wksp(), but considers using hufTable if *repeat != HUF_repeat_none. - * If it uses hufTable it does not modify hufTable or repeat. - * If it doesn't, it sets *repeat = HUF_repeat_none, and it sets hufTable to the table used. - * If preferRepeat then the old table will always be used if valid. */ -size_t HUF_compress1X_repeat(void* dst, size_t dstSize, - const void* src, size_t srcSize, - unsigned maxSymbolValue, unsigned tableLog, - void* workSpace, size_t wkspSize, /*< `workSpace` must be aligned on 4-bytes boundaries, `wkspSize` must be >= HUF_WORKSPACE_SIZE */ - HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2); - -size_t HUF_decompress1X1 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /* single-symbol decoder */ -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_decompress1X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /* double-symbol decoder */ -#endif - -size_t HUF_decompress1X_DCtx (HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); -size_t HUF_decompress1X_DCtx_wksp (HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_decompress1X1_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< single-symbol decoder */ -size_t HUF_decompress1X1_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /*< single-symbol decoder */ -#endif -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_decompress1X2_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /*< double-symbols decoder */ -size_t HUF_decompress1X2_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /*< double-symbols decoder */ -#endif - -size_t HUF_decompress1X_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); /*< automatic selection of sing or double symbol decoder, based on DTable */ -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_decompress1X1_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); -#endif -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_decompress1X2_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); -#endif - -/* BMI2 variants. - * If the CPU has BMI2 support, pass bmi2=1, otherwise pass bmi2=0. - */ -size_t HUF_decompress1X_usingDTable_bmi2(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable, int bmi2); -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_decompress1X1_DCtx_wksp_bmi2(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize, int bmi2); -#endif -size_t HUF_decompress4X_usingDTable_bmi2(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable, int bmi2); -size_t HUF_decompress4X_hufOnly_wksp_bmi2(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize, int bmi2); -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_readDTableX1_wksp_bmi2(HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize, int bmi2); -#endif - -#endif /* HUF_STATIC_LINKING_ONLY */ - diff --git a/lib/zstd/common/mem.h b/lib/zstd/common/mem.h deleted file mode 100644 index dcdd586a9f..0000000000 --- a/lib/zstd/common/mem.h +++ /dev/null @@ -1,259 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */ -/* - * Copyright (c) Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef MEM_H_MODULE -#define MEM_H_MODULE - -/*-**************************************** -* Dependencies -******************************************/ -#include <asm/unaligned.h> /* get_unaligned, put_unaligned* */ -#include <linux/compiler.h> /* inline */ -#include <linux/swab.h> /* swab32, swab64 */ -#include <linux/types.h> /* size_t, ptrdiff_t */ -#include "debug.h" /* DEBUG_STATIC_ASSERT */ - -/*-**************************************** -* Compiler specifics -******************************************/ -#define MEM_STATIC static inline - -/*-************************************************************** -* Basic Types -*****************************************************************/ -typedef uint8_t BYTE; -typedef uint16_t U16; -typedef int16_t S16; -typedef uint32_t U32; -typedef int32_t S32; -typedef uint64_t U64; -typedef int64_t S64; - -/*-************************************************************** -* Memory I/O API -*****************************************************************/ -/*=== Static platform detection ===*/ -MEM_STATIC unsigned MEM_32bits(void); -MEM_STATIC unsigned MEM_64bits(void); -MEM_STATIC unsigned MEM_isLittleEndian(void); - -/*=== Native unaligned read/write ===*/ -MEM_STATIC U16 MEM_read16(const void* memPtr); -MEM_STATIC U32 MEM_read32(const void* memPtr); -MEM_STATIC U64 MEM_read64(const void* memPtr); -MEM_STATIC size_t MEM_readST(const void* memPtr); - -MEM_STATIC void MEM_write16(void* memPtr, U16 value); -MEM_STATIC void MEM_write32(void* memPtr, U32 value); -MEM_STATIC void MEM_write64(void* memPtr, U64 value); - -/*=== Little endian unaligned read/write ===*/ -MEM_STATIC U16 MEM_readLE16(const void* memPtr); -MEM_STATIC U32 MEM_readLE24(const void* memPtr); -MEM_STATIC U32 MEM_readLE32(const void* memPtr); -MEM_STATIC U64 MEM_readLE64(const void* memPtr); -MEM_STATIC size_t MEM_readLEST(const void* memPtr); - -MEM_STATIC void MEM_writeLE16(void* memPtr, U16 val); -MEM_STATIC void MEM_writeLE24(void* memPtr, U32 val); -MEM_STATIC void MEM_writeLE32(void* memPtr, U32 val32); -MEM_STATIC void MEM_writeLE64(void* memPtr, U64 val64); -MEM_STATIC void MEM_writeLEST(void* memPtr, size_t val); - -/*=== Big endian unaligned read/write ===*/ -MEM_STATIC U32 MEM_readBE32(const void* memPtr); -MEM_STATIC U64 MEM_readBE64(const void* memPtr); -MEM_STATIC size_t MEM_readBEST(const void* memPtr); - -MEM_STATIC void MEM_writeBE32(void* memPtr, U32 val32); -MEM_STATIC void MEM_writeBE64(void* memPtr, U64 val64); -MEM_STATIC void MEM_writeBEST(void* memPtr, size_t val); - -/*=== Byteswap ===*/ -MEM_STATIC U32 MEM_swap32(U32 in); -MEM_STATIC U64 MEM_swap64(U64 in); -MEM_STATIC size_t MEM_swapST(size_t in); - -/*-************************************************************** -* Memory I/O Implementation -*****************************************************************/ -MEM_STATIC unsigned MEM_32bits(void) -{ - return sizeof(size_t) == 4; -} - -MEM_STATIC unsigned MEM_64bits(void) -{ - return sizeof(size_t) == 8; -} - -#if defined(__LITTLE_ENDIAN) -#define MEM_LITTLE_ENDIAN 1 -#else -#define MEM_LITTLE_ENDIAN 0 -#endif - -MEM_STATIC unsigned MEM_isLittleEndian(void) -{ - return MEM_LITTLE_ENDIAN; -} - -MEM_STATIC U16 MEM_read16(const void *memPtr) -{ - return get_unaligned((const U16 *)memPtr); -} - -MEM_STATIC U32 MEM_read32(const void *memPtr) -{ - return get_unaligned((const U32 *)memPtr); -} - -MEM_STATIC U64 MEM_read64(const void *memPtr) -{ - return get_unaligned((const U64 *)memPtr); -} - -MEM_STATIC size_t MEM_readST(const void *memPtr) -{ - return get_unaligned((const size_t *)memPtr); -} - -MEM_STATIC void MEM_write16(void *memPtr, U16 value) -{ - put_unaligned(value, (U16 *)memPtr); -} - -MEM_STATIC void MEM_write32(void *memPtr, U32 value) -{ - put_unaligned(value, (U32 *)memPtr); -} - -MEM_STATIC void MEM_write64(void *memPtr, U64 value) -{ - put_unaligned(value, (U64 *)memPtr); -} - -/*=== Little endian r/w ===*/ - -MEM_STATIC U16 MEM_readLE16(const void *memPtr) -{ - return get_unaligned_le16(memPtr); -} - -MEM_STATIC void MEM_writeLE16(void *memPtr, U16 val) -{ - put_unaligned_le16(val, memPtr); -} - -MEM_STATIC U32 MEM_readLE24(const void *memPtr) -{ - return MEM_readLE16(memPtr) + (((const BYTE *)memPtr)[2] << 16); -} - -MEM_STATIC void MEM_writeLE24(void *memPtr, U32 val) -{ - MEM_writeLE16(memPtr, (U16)val); - ((BYTE *)memPtr)[2] = (BYTE)(val >> 16); -} - -MEM_STATIC U32 MEM_readLE32(const void *memPtr) -{ - return get_unaligned_le32(memPtr); -} - -MEM_STATIC void MEM_writeLE32(void *memPtr, U32 val32) -{ - put_unaligned_le32(val32, memPtr); -} - -MEM_STATIC U64 MEM_readLE64(const void *memPtr) -{ - return get_unaligned_le64(memPtr); -} - -MEM_STATIC void MEM_writeLE64(void *memPtr, U64 val64) -{ - put_unaligned_le64(val64, memPtr); -} - -MEM_STATIC size_t MEM_readLEST(const void *memPtr) -{ - if (MEM_32bits()) - return (size_t)MEM_readLE32(memPtr); - else - return (size_t)MEM_readLE64(memPtr); -} - -MEM_STATIC void MEM_writeLEST(void *memPtr, size_t val) -{ - if (MEM_32bits()) - MEM_writeLE32(memPtr, (U32)val); - else - MEM_writeLE64(memPtr, (U64)val); -} - -/*=== Big endian r/w ===*/ - -MEM_STATIC U32 MEM_readBE32(const void *memPtr) -{ - return get_unaligned_be32(memPtr); -} - -MEM_STATIC void MEM_writeBE32(void *memPtr, U32 val32) -{ - put_unaligned_be32(val32, memPtr); -} - -MEM_STATIC U64 MEM_readBE64(const void *memPtr) -{ - return get_unaligned_be64(memPtr); -} - -MEM_STATIC void MEM_writeBE64(void *memPtr, U64 val64) -{ - put_unaligned_be64(val64, memPtr); -} - -MEM_STATIC size_t MEM_readBEST(const void *memPtr) -{ - if (MEM_32bits()) - return (size_t)MEM_readBE32(memPtr); - else - return (size_t)MEM_readBE64(memPtr); -} - -MEM_STATIC void MEM_writeBEST(void *memPtr, size_t val) -{ - if (MEM_32bits()) - MEM_writeBE32(memPtr, (U32)val); - else - MEM_writeBE64(memPtr, (U64)val); -} - -MEM_STATIC U32 MEM_swap32(U32 in) -{ - return swab32(in); -} - -MEM_STATIC U64 MEM_swap64(U64 in) -{ - return swab64(in); -} - -MEM_STATIC size_t MEM_swapST(size_t in) -{ - if (MEM_32bits()) - return (size_t)MEM_swap32((U32)in); - else - return (size_t)MEM_swap64((U64)in); -} - -#endif /* MEM_H_MODULE */ diff --git a/lib/zstd/common/zstd_common.c b/lib/zstd/common/zstd_common.c deleted file mode 100644 index 3d7e35b309..0000000000 --- a/lib/zstd/common/zstd_common.c +++ /dev/null @@ -1,83 +0,0 @@ -/* - * Copyright (c) Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - - - -/*-************************************* -* Dependencies -***************************************/ -#define ZSTD_DEPS_NEED_MALLOC -#include "zstd_deps.h" /* ZSTD_malloc, ZSTD_calloc, ZSTD_free, ZSTD_memset */ -#include "error_private.h" -#include "zstd_internal.h" - - -/*-**************************************** -* Version -******************************************/ -unsigned ZSTD_versionNumber(void) { return ZSTD_VERSION_NUMBER; } - -const char* ZSTD_versionString(void) { return ZSTD_VERSION_STRING; } - - -/*-**************************************** -* ZSTD Error Management -******************************************/ -#undef ZSTD_isError /* defined within zstd_internal.h */ -/*! ZSTD_isError() : - * tells if a return value is an error code - * symbol is required for external callers */ -unsigned ZSTD_isError(size_t code) { return ERR_isError(code); } - -/*! ZSTD_getErrorName() : - * provides error code string from function result (useful for debugging) */ -const char* ZSTD_getErrorName(size_t code) { return ERR_getErrorName(code); } - -/*! ZSTD_getError() : - * convert a `size_t` function result into a proper ZSTD_errorCode enum */ -ZSTD_ErrorCode ZSTD_getErrorCode(size_t code) { return ERR_getErrorCode(code); } - -/*! ZSTD_getErrorString() : - * provides error code string from enum */ -const char* ZSTD_getErrorString(ZSTD_ErrorCode code) { return ERR_getErrorString(code); } - - - -/*=************************************************************** -* Custom allocator -****************************************************************/ -void* ZSTD_customMalloc(size_t size, ZSTD_customMem customMem) -{ - if (customMem.customAlloc) - return customMem.customAlloc(customMem.opaque, size); - return ZSTD_malloc(size); -} - -void* ZSTD_customCalloc(size_t size, ZSTD_customMem customMem) -{ - if (customMem.customAlloc) { - /* calloc implemented as malloc+memset; - * not as efficient as calloc, but next best guess for custom malloc */ - void* const ptr = customMem.customAlloc(customMem.opaque, size); - ZSTD_memset(ptr, 0, size); - return ptr; - } - return ZSTD_calloc(1, size); -} - -void ZSTD_customFree(void* ptr, ZSTD_customMem customMem) -{ - if (ptr!=NULL) { - if (customMem.customFree) - customMem.customFree(customMem.opaque, ptr); - else - ZSTD_free(ptr); - } -} diff --git a/lib/zstd/common/zstd_deps.h b/lib/zstd/common/zstd_deps.h deleted file mode 100644 index 7a5bf44839..0000000000 --- a/lib/zstd/common/zstd_deps.h +++ /dev/null @@ -1,125 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */ -/* - * Copyright (c) Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -/* - * This file provides common libc dependencies that zstd requires. - * The purpose is to allow replacing this file with a custom implementation - * to compile zstd without libc support. - */ - -/* Need: - * NULL - * INT_MAX - * UINT_MAX - * ZSTD_memcpy() - * ZSTD_memset() - * ZSTD_memmove() - */ -#ifndef ZSTD_DEPS_COMMON -#define ZSTD_DEPS_COMMON - -#include <linux/limits.h> -#include <linux/stddef.h> - -#define ZSTD_memcpy(d,s,n) __builtin_memcpy((d),(s),(n)) -#define ZSTD_memmove(d,s,n) __builtin_memmove((d),(s),(n)) -#define ZSTD_memset(d,s,n) __builtin_memset((d),(s),(n)) - -#endif /* ZSTD_DEPS_COMMON */ - -/* - * Define malloc as always failing. That means the user must - * either use ZSTD_customMem or statically allocate memory. - * Need: - * ZSTD_malloc() - * ZSTD_free() - * ZSTD_calloc() - */ -#ifdef ZSTD_DEPS_NEED_MALLOC -#ifndef ZSTD_DEPS_MALLOC -#define ZSTD_DEPS_MALLOC - -#define ZSTD_malloc(s) ({ (void)(s); NULL; }) -#define ZSTD_free(p) ((void)(p)) -#define ZSTD_calloc(n,s) ({ (void)(n); (void)(s); NULL; }) - -#endif /* ZSTD_DEPS_MALLOC */ -#endif /* ZSTD_DEPS_NEED_MALLOC */ - -/* - * Provides 64-bit math support. - * Need: - * U64 ZSTD_div64(U64 dividend, U32 divisor) - */ -#ifdef ZSTD_DEPS_NEED_MATH64 -#ifndef ZSTD_DEPS_MATH64 -#define ZSTD_DEPS_MATH64 - -#include <linux/math64.h> - -static uint64_t ZSTD_div64(uint64_t dividend, uint32_t divisor) { - return div_u64(dividend, divisor); -} - -#endif /* ZSTD_DEPS_MATH64 */ -#endif /* ZSTD_DEPS_NEED_MATH64 */ - -/* - * This is only requested when DEBUGLEVEL >= 1, meaning - * it is disabled in production. - * Need: - * assert() - */ -#ifdef ZSTD_DEPS_NEED_ASSERT -#ifndef ZSTD_DEPS_ASSERT -#define ZSTD_DEPS_ASSERT - -#include <linux/kernel.h> - -#define assert(x) WARN_ON((x)) - -#endif /* ZSTD_DEPS_ASSERT */ -#endif /* ZSTD_DEPS_NEED_ASSERT */ - -/* - * This is only requested when DEBUGLEVEL >= 2, meaning - * it is disabled in production. - * Need: - * ZSTD_DEBUG_PRINT() - */ -#ifdef ZSTD_DEPS_NEED_IO -#ifndef ZSTD_DEPS_IO -#define ZSTD_DEPS_IO - -#include <linux/printk.h> - -#define ZSTD_DEBUG_PRINT(...) pr_debug(__VA_ARGS__) - -#endif /* ZSTD_DEPS_IO */ -#endif /* ZSTD_DEPS_NEED_IO */ - -/* - * Only requested when MSAN is enabled. - * Need: - * intptr_t - */ -#ifdef ZSTD_DEPS_NEED_STDINT -#ifndef ZSTD_DEPS_STDINT -#define ZSTD_DEPS_STDINT - -/* - * The Linux Kernel doesn't provide intptr_t, only uintptr_t, which - * is an unsigned long. - */ -typedef long intptr_t; - -#endif /* ZSTD_DEPS_STDINT */ -#endif /* ZSTD_DEPS_NEED_STDINT */ diff --git a/lib/zstd/common/zstd_internal.h b/lib/zstd/common/zstd_internal.h deleted file mode 100644 index fc6f3a9b40..0000000000 --- a/lib/zstd/common/zstd_internal.h +++ /dev/null @@ -1,450 +0,0 @@ -/* - * Copyright (c) Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTD_CCOMMON_H_MODULE -#define ZSTD_CCOMMON_H_MODULE - -/* this module contains definitions which must be identical - * across compression, decompression and dictBuilder. - * It also contains a few functions useful to at least 2 of them - * and which benefit from being inlined */ - -/*-************************************* -* Dependencies -***************************************/ -#include "compiler.h" -#include "mem.h" -#include "debug.h" /* assert, DEBUGLOG, RAWLOG, g_debuglevel */ -#include "error_private.h" -#define ZSTD_STATIC_LINKING_ONLY -#include <linux/zstd.h> -#define FSE_STATIC_LINKING_ONLY -#include "fse.h" -#define HUF_STATIC_LINKING_ONLY -#include "huf.h" -#include <linux/xxhash.h> /* XXH_reset, update, digest */ -#define ZSTD_TRACE 0 - - -/* ---- static assert (debug) --- */ -#define ZSTD_STATIC_ASSERT(c) DEBUG_STATIC_ASSERT(c) -#define ZSTD_isError ERR_isError /* for inlining */ -#define FSE_isError ERR_isError -#define HUF_isError ERR_isError - - -/*-************************************* -* shared macros -***************************************/ -#undef MIN -#undef MAX -#define MIN(a,b) ((a)<(b) ? (a) : (b)) -#define MAX(a,b) ((a)>(b) ? (a) : (b)) - -/* - * Ignore: this is an internal helper. - * - * This is a helper function to help force C99-correctness during compilation. - * Under strict compilation modes, variadic macro arguments can't be empty. - * However, variadic function arguments can be. Using a function therefore lets - * us statically check that at least one (string) argument was passed, - * independent of the compilation flags. - */ -static INLINE_KEYWORD UNUSED_ATTR -void _force_has_format_string(const char *format, ...) { - (void)format; -} - -/* - * Ignore: this is an internal helper. - * - * We want to force this function invocation to be syntactically correct, but - * we don't want to force runtime evaluation of its arguments. - */ -#define _FORCE_HAS_FORMAT_STRING(...) \ - if (0) { \ - _force_has_format_string(__VA_ARGS__); \ - } - -/* - * Return the specified error if the condition evaluates to true. - * - * In debug modes, prints additional information. - * In order to do that (particularly, printing the conditional that failed), - * this can't just wrap RETURN_ERROR(). - */ -#define RETURN_ERROR_IF(cond, err, ...) \ - if (cond) { \ - RAWLOG(3, "%s:%d: ERROR!: check %s failed, returning %s", \ - __FILE__, __LINE__, ZSTD_QUOTE(cond), ZSTD_QUOTE(ERROR(err))); \ - _FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \ - RAWLOG(3, ": " __VA_ARGS__); \ - RAWLOG(3, "\n"); \ - return ERROR(err); \ - } - -/* - * Unconditionally return the specified error. - * - * In debug modes, prints additional information. - */ -#define RETURN_ERROR(err, ...) \ - do { \ - RAWLOG(3, "%s:%d: ERROR!: unconditional check failed, returning %s", \ - __FILE__, __LINE__, ZSTD_QUOTE(ERROR(err))); \ - _FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \ - RAWLOG(3, ": " __VA_ARGS__); \ - RAWLOG(3, "\n"); \ - return ERROR(err); \ - } while(0); - -/* - * If the provided expression evaluates to an error code, returns that error code. - * - * In debug modes, prints additional information. - */ -#define FORWARD_IF_ERROR(err, ...) \ - do { \ - size_t const err_code = (err); \ - if (ERR_isError(err_code)) { \ - RAWLOG(3, "%s:%d: ERROR!: forwarding error in %s: %s", \ - __FILE__, __LINE__, ZSTD_QUOTE(err), ERR_getErrorName(err_code)); \ - _FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \ - RAWLOG(3, ": " __VA_ARGS__); \ - RAWLOG(3, "\n"); \ - return err_code; \ - } \ - } while(0); - - -/*-************************************* -* Common constants -***************************************/ -#define ZSTD_OPT_NUM (1<<12) - -#define ZSTD_REP_NUM 3 /* number of repcodes */ -#define ZSTD_REP_MOVE (ZSTD_REP_NUM-1) -static UNUSED_ATTR const U32 repStartValue[ZSTD_REP_NUM] = { 1, 4, 8 }; - -#define KB *(1 <<10) -#define MB *(1 <<20) -#define GB *(1U<<30) - -#define BIT7 128 -#define BIT6 64 -#define BIT5 32 -#define BIT4 16 -#define BIT1 2 -#define BIT0 1 - -#define ZSTD_WINDOWLOG_ABSOLUTEMIN 10 -static UNUSED_ATTR const size_t ZSTD_fcs_fieldSize[4] = { 0, 2, 4, 8 }; -static UNUSED_ATTR const size_t ZSTD_did_fieldSize[4] = { 0, 1, 2, 4 }; - -#define ZSTD_FRAMEIDSIZE 4 /* magic number size */ - -#define ZSTD_BLOCKHEADERSIZE 3 /* C standard doesn't allow `static const` variable to be init using another `static const` variable */ -static UNUSED_ATTR const size_t ZSTD_blockHeaderSize = ZSTD_BLOCKHEADERSIZE; -typedef enum { bt_raw, bt_rle, bt_compressed, bt_reserved } blockType_e; - -#define ZSTD_FRAMECHECKSUMSIZE 4 - -#define MIN_SEQUENCES_SIZE 1 /* nbSeq==0 */ -#define MIN_CBLOCK_SIZE (1 /*litCSize*/ + 1 /* RLE or RAW */ + MIN_SEQUENCES_SIZE /* nbSeq==0 */) /* for a non-null block */ - -#define HufLog 12 -typedef enum { set_basic, set_rle, set_compressed, set_repeat } symbolEncodingType_e; - -#define LONGNBSEQ 0x7F00 - -#define MINMATCH 3 - -#define Litbits 8 -#define MaxLit ((1<<Litbits) - 1) -#define MaxML 52 -#define MaxLL 35 -#define DefaultMaxOff 28 -#define MaxOff 31 -#define MaxSeq MAX(MaxLL, MaxML) /* Assumption : MaxOff < MaxLL,MaxML */ -#define MLFSELog 9 -#define LLFSELog 9 -#define OffFSELog 8 -#define MaxFSELog MAX(MAX(MLFSELog, LLFSELog), OffFSELog) - -#define ZSTD_MAX_HUF_HEADER_SIZE 128 /* header + <= 127 byte tree description */ -/* Each table cannot take more than #symbols * FSELog bits */ -#define ZSTD_MAX_FSE_HEADERS_SIZE (((MaxML + 1) * MLFSELog + (MaxLL + 1) * LLFSELog + (MaxOff + 1) * OffFSELog + 7) / 8) - -static UNUSED_ATTR const U32 LL_bits[MaxLL+1] = { - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 1, 1, 1, 1, 2, 2, 3, 3, - 4, 6, 7, 8, 9,10,11,12, - 13,14,15,16 -}; -static UNUSED_ATTR const S16 LL_defaultNorm[MaxLL+1] = { - 4, 3, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 1, 1, 1, - 2, 2, 2, 2, 2, 2, 2, 2, - 2, 3, 2, 1, 1, 1, 1, 1, - -1,-1,-1,-1 -}; -#define LL_DEFAULTNORMLOG 6 /* for static allocation */ -static UNUSED_ATTR const U32 LL_defaultNormLog = LL_DEFAULTNORMLOG; - -static UNUSED_ATTR const U32 ML_bits[MaxML+1] = { - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 1, 1, 1, 1, 2, 2, 3, 3, - 4, 4, 5, 7, 8, 9,10,11, - 12,13,14,15,16 -}; -static UNUSED_ATTR const S16 ML_defaultNorm[MaxML+1] = { - 1, 4, 3, 2, 2, 2, 2, 2, - 2, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1,-1,-1, - -1,-1,-1,-1,-1 -}; -#define ML_DEFAULTNORMLOG 6 /* for static allocation */ -static UNUSED_ATTR const U32 ML_defaultNormLog = ML_DEFAULTNORMLOG; - -static UNUSED_ATTR const S16 OF_defaultNorm[DefaultMaxOff+1] = { - 1, 1, 1, 1, 1, 1, 2, 2, - 2, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, - -1,-1,-1,-1,-1 -}; -#define OF_DEFAULTNORMLOG 5 /* for static allocation */ -static UNUSED_ATTR const U32 OF_defaultNormLog = OF_DEFAULTNORMLOG; - - -/*-******************************************* -* Shared functions to include for inlining -*********************************************/ -static void ZSTD_copy8(void* dst, const void* src) { - ZSTD_memcpy(dst, src, 8); -} - -#define COPY8(d,s) { ZSTD_copy8(d,s); d+=8; s+=8; } -static void ZSTD_copy16(void* dst, const void* src) { - ZSTD_memcpy(dst, src, 16); -} -#define COPY16(d,s) { ZSTD_copy16(d,s); d+=16; s+=16; } - -#define WILDCOPY_OVERLENGTH 32 -#define WILDCOPY_VECLEN 16 - -typedef enum { - ZSTD_no_overlap, - ZSTD_overlap_src_before_dst - /* ZSTD_overlap_dst_before_src, */ -} ZSTD_overlap_e; - -/*! ZSTD_wildcopy() : - * Custom version of ZSTD_memcpy(), can over read/write up to WILDCOPY_OVERLENGTH bytes (if length==0) - * @param ovtype controls the overlap detection - * - ZSTD_no_overlap: The source and destination are guaranteed to be at least WILDCOPY_VECLEN bytes apart. - * - ZSTD_overlap_src_before_dst: The src and dst may overlap, but they MUST be at least 8 bytes apart. - * The src buffer must be before the dst buffer. - */ -MEM_STATIC FORCE_INLINE_ATTR -void ZSTD_wildcopy(void* dst, const void* src, ptrdiff_t length, ZSTD_overlap_e const ovtype) -{ - ptrdiff_t diff = (BYTE*)dst - (const BYTE*)src; - const BYTE* ip = (const BYTE*)src; - BYTE* op = (BYTE*)dst; - BYTE* const oend = op + length; - - assert(diff >= 8 || (ovtype == ZSTD_no_overlap && diff <= -WILDCOPY_VECLEN)); - - if (ovtype == ZSTD_overlap_src_before_dst && diff < WILDCOPY_VECLEN) { - /* Handle short offset copies. */ - do { - COPY8(op, ip) - } while (op < oend); - } else { - assert(diff >= WILDCOPY_VECLEN || diff <= -WILDCOPY_VECLEN); - /* Separate out the first COPY16() call because the copy length is - * almost certain to be short, so the branches have different - * probabilities. Since it is almost certain to be short, only do - * one COPY16() in the first call. Then, do two calls per loop since - * at that point it is more likely to have a high trip count. - */ -#ifdef __aarch64__ - do { - COPY16(op, ip); - } - while (op < oend); -#else - ZSTD_copy16(op, ip); - if (16 >= length) return; - op += 16; - ip += 16; - do { - COPY16(op, ip); - COPY16(op, ip); - } - while (op < oend); -#endif - } -} - -MEM_STATIC size_t ZSTD_limitCopy(void* dst, size_t dstCapacity, const void* src, size_t srcSize) -{ - size_t const length = MIN(dstCapacity, srcSize); - if (length > 0) { - ZSTD_memcpy(dst, src, length); - } - return length; -} - -/* define "workspace is too large" as this number of times larger than needed */ -#define ZSTD_WORKSPACETOOLARGE_FACTOR 3 - -/* when workspace is continuously too large - * during at least this number of times, - * context's memory usage is considered wasteful, - * because it's sized to handle a worst case scenario which rarely happens. - * In which case, resize it down to free some memory */ -#define ZSTD_WORKSPACETOOLARGE_MAXDURATION 128 - -/* Controls whether the input/output buffer is buffered or stable. */ -typedef enum { - ZSTD_bm_buffered = 0, /* Buffer the input/output */ - ZSTD_bm_stable = 1 /* ZSTD_inBuffer/ZSTD_outBuffer is stable */ -} ZSTD_bufferMode_e; - - -/*-******************************************* -* Private declarations -*********************************************/ -typedef struct seqDef_s { - U32 offset; /* Offset code of the sequence */ - U16 litLength; - U16 matchLength; -} seqDef; - -typedef struct { - seqDef* sequencesStart; - seqDef* sequences; /* ptr to end of sequences */ - BYTE* litStart; - BYTE* lit; /* ptr to end of literals */ - BYTE* llCode; - BYTE* mlCode; - BYTE* ofCode; - size_t maxNbSeq; - size_t maxNbLit; - - /* longLengthPos and longLengthID to allow us to represent either a single litLength or matchLength - * in the seqStore that has a value larger than U16 (if it exists). To do so, we increment - * the existing value of the litLength or matchLength by 0x10000. - */ - U32 longLengthID; /* 0 == no longLength; 1 == Represent the long literal; 2 == Represent the long match; */ - U32 longLengthPos; /* Index of the sequence to apply long length modification to */ -} seqStore_t; - -typedef struct { - U32 litLength; - U32 matchLength; -} ZSTD_sequenceLength; - -/* - * Returns the ZSTD_sequenceLength for the given sequences. It handles the decoding of long sequences - * indicated by longLengthPos and longLengthID, and adds MINMATCH back to matchLength. - */ -MEM_STATIC ZSTD_sequenceLength ZSTD_getSequenceLength(seqStore_t const* seqStore, seqDef const* seq) -{ - ZSTD_sequenceLength seqLen; - seqLen.litLength = seq->litLength; - seqLen.matchLength = seq->matchLength + MINMATCH; - if (seqStore->longLengthPos == (U32)(seq - seqStore->sequencesStart)) { - if (seqStore->longLengthID == 1) { - seqLen.litLength += 0xFFFF; - } - if (seqStore->longLengthID == 2) { - seqLen.matchLength += 0xFFFF; - } - } - return seqLen; -} - -/* - * Contains the compressed frame size and an upper-bound for the decompressed frame size. - * Note: before using `compressedSize`, check for errors using ZSTD_isError(). - * similarly, before using `decompressedBound`, check for errors using: - * `decompressedBound != ZSTD_CONTENTSIZE_ERROR` - */ -typedef struct { - size_t compressedSize; - unsigned long long decompressedBound; -} ZSTD_frameSizeInfo; /* decompress & legacy */ - -const seqStore_t* ZSTD_getSeqStore(const ZSTD_CCtx* ctx); /* compress & dictBuilder */ -void ZSTD_seqToCodes(const seqStore_t* seqStorePtr); /* compress, dictBuilder, decodeCorpus (shouldn't get its definition from here) */ - -/* custom memory allocation functions */ -void* ZSTD_customMalloc(size_t size, ZSTD_customMem customMem); -void* ZSTD_customCalloc(size_t size, ZSTD_customMem customMem); -void ZSTD_customFree(void* ptr, ZSTD_customMem customMem); - - -MEM_STATIC U32 ZSTD_highbit32(U32 val) /* compress, dictBuilder, decodeCorpus */ -{ - assert(val != 0); - { -# if (__GNUC__ >= 3) /* GCC Intrinsic */ - return __builtin_clz (val) ^ 31; -# else /* Software version */ - static const U32 DeBruijnClz[32] = { 0, 9, 1, 10, 13, 21, 2, 29, 11, 14, 16, 18, 22, 25, 3, 30, 8, 12, 20, 28, 15, 17, 24, 7, 19, 27, 23, 6, 26, 5, 4, 31 }; - U32 v = val; - v |= v >> 1; - v |= v >> 2; - v |= v >> 4; - v |= v >> 8; - v |= v >> 16; - return DeBruijnClz[(v * 0x07C4ACDDU) >> 27]; -# endif - } -} - - -/* ZSTD_invalidateRepCodes() : - * ensures next compression will not use repcodes from previous block. - * Note : only works with regular variant; - * do not use with extDict variant ! */ -void ZSTD_invalidateRepCodes(ZSTD_CCtx* cctx); /* zstdmt, adaptive_compression (shouldn't get this definition from here) */ - - -typedef struct { - blockType_e blockType; - U32 lastBlock; - U32 origSize; -} blockProperties_t; /* declared here for decompress and fullbench */ - -/*! ZSTD_getcBlockSize() : - * Provides the size of compressed block from block header `src` */ -/* Used by: decompress, fullbench (does not get its definition from here) */ -size_t ZSTD_getcBlockSize(const void* src, size_t srcSize, - blockProperties_t* bpPtr); - -/*! ZSTD_decodeSeqHeaders() : - * decode sequence header from src */ -/* Used by: decompress, fullbench (does not get its definition from here) */ -size_t ZSTD_decodeSeqHeaders(ZSTD_DCtx* dctx, int* nbSeqPtr, - const void* src, size_t srcSize); - - - -#endif /* ZSTD_CCOMMON_H_MODULE */ |