Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2)  * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * This source code is licensed under the BSD-style license found in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * LICENSE file in the root directory of https://github.com/facebook/zstd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  * An additional grant of patent rights can be found in the PATENTS file in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * same directory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  * This program is free software; you can redistribute it and/or modify it under
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11)  * the terms of the GNU General Public License version 2 as published by the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12)  * Free Software Foundation. This program is dual-licensed; you may select
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13)  * either version 2 of the GNU General Public License ("GPL") or BSD license
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14)  * ("BSD").
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #ifndef ZSTD_CCOMMON_H_MODULE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #define ZSTD_CCOMMON_H_MODULE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) /*-*******************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) *  Compiler specifics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) *********************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #define FORCE_INLINE static __always_inline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #define FORCE_NOINLINE static noinline
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) /*-*************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) *  Dependencies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) ***************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include "error_private.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #include "mem.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #include <linux/compiler.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) #include <linux/xxhash.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) #include <linux/zstd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) /*-*************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) *  shared macros
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) ***************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) #define MIN(a, b) ((a) < (b) ? (a) : (b))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) #define MAX(a, b) ((a) > (b) ? (a) : (b))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) #define CHECK_F(f)                       \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	{                                \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 		size_t const errcod = f; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 		if (ERR_isError(errcod)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 			return errcod;   \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	} /* check and Forward error code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) #define CHECK_E(f, e)                    \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	{                                \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		size_t const errcod = f; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 		if (ERR_isError(errcod)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 			return ERROR(e); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	} /* check and send Error code */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) #define ZSTD_STATIC_ASSERT(c)                                   \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	{                                                       \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 		enum { ZSTD_static_assert = 1 / (int)(!!(c)) }; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) /*-*************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) *  Common constants
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) ***************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) #define ZSTD_OPT_NUM (1 << 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) #define ZSTD_DICT_MAGIC 0xEC30A437 /* v0.7+ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) #define ZSTD_REP_NUM 3		      /* number of repcodes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) #define ZSTD_REP_CHECK (ZSTD_REP_NUM) /* number of repcodes to check by the optimal parser */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) #define ZSTD_REP_MOVE (ZSTD_REP_NUM - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) #define ZSTD_REP_MOVE_OPT (ZSTD_REP_NUM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) static const U32 repStartValue[ZSTD_REP_NUM] = {1, 4, 8};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) #define KB *(1 << 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) #define MB *(1 << 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) #define GB *(1U << 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) #define BIT7 128
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) #define BIT6 64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) #define BIT5 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) #define BIT4 16
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) #define BIT1 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) #define BIT0 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) #define ZSTD_WINDOWLOG_ABSOLUTEMIN 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) static const size_t ZSTD_fcs_fieldSize[4] = {0, 2, 4, 8};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) static const size_t ZSTD_did_fieldSize[4] = {0, 1, 2, 4};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) #define ZSTD_BLOCKHEADERSIZE 3 /* C standard doesn't allow `static const` variable to be init using another `static const` variable */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) static const size_t ZSTD_blockHeaderSize = ZSTD_BLOCKHEADERSIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) typedef enum { bt_raw, bt_rle, bt_compressed, bt_reserved } blockType_e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) #define MIN_SEQUENCES_SIZE 1									  /* nbSeq==0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) #define MIN_CBLOCK_SIZE (1 /*litCSize*/ + 1 /* RLE or RAW */ + MIN_SEQUENCES_SIZE /* nbSeq==0 */) /* for a non-null block */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) #define HufLog 12
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) typedef enum { set_basic, set_rle, set_compressed, set_repeat } symbolEncodingType_e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) #define LONGNBSEQ 0x7F00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) #define MINMATCH 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) #define EQUAL_READ32 4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define Litbits 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define MaxLit ((1 << Litbits) - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define MaxML 52
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define MaxLL 35
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #define MaxOff 28
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #define MaxSeq MAX(MaxLL, MaxML) /* Assumption : MaxOff < MaxLL,MaxML */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #define MLFSELog 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define LLFSELog 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #define OffFSELog 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static 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};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static 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};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) #define LL_DEFAULTNORMLOG 6 /* for static allocation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static const U32 LL_defaultNormLog = LL_DEFAULTNORMLOG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static 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,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 				       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};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static 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,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 					      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};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) #define ML_DEFAULTNORMLOG 6 /* for static allocation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static const U32 ML_defaultNormLog = ML_DEFAULTNORMLOG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static const S16 OF_defaultNorm[MaxOff + 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};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) #define OF_DEFAULTNORMLOG 5 /* for static allocation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) static const U32 OF_defaultNormLog = OF_DEFAULTNORMLOG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) /*-*******************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) *  Shared functions to include for inlining
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) *********************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) ZSTD_STATIC void ZSTD_copy8(void *dst, const void *src) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	 * zstd relies heavily on gcc being able to analyze and inline this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	 * memcpy() call, since it is called in a tight loop. Preboot mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 	 * is compiled in freestanding mode, which stops gcc from analyzing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	 * memcpy(). Use __builtin_memcpy() to tell gcc to analyze this as a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	 * regular memcpy().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	__builtin_memcpy(dst, src, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /*! ZSTD_wildcopy() :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) *   custom version of memcpy(), can copy up to 7 bytes too many (8 bytes if length==0) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) #define WILDCOPY_OVERLENGTH 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) ZSTD_STATIC void ZSTD_wildcopy(void *dst, const void *src, ptrdiff_t length)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	const BYTE* ip = (const BYTE*)src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	BYTE* op = (BYTE*)dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	BYTE* const oend = op + length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) #if defined(GCC_VERSION) && GCC_VERSION >= 70000 && GCC_VERSION < 70200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	 * Work around https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81388.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 	 * Avoid the bad case where the loop only runs once by handling the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	 * special case separately. This doesn't trigger the bug because it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	 * doesn't involve pointer/integer overflow.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	if (length <= 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		return ZSTD_copy8(dst, src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 		ZSTD_copy8(op, ip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		op += 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		ip += 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	} while (op < oend);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) /*-*******************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) *  Private interfaces
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) *********************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) typedef struct ZSTD_stats_s ZSTD_stats_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	U32 off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	U32 len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) } ZSTD_match_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	U32 price;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	U32 off;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	U32 mlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	U32 litlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	U32 rep[ZSTD_REP_NUM];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) } ZSTD_optimal_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) typedef struct seqDef_s {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	U32 offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	U16 litLength;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	U16 matchLength;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) } seqDef;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	seqDef *sequencesStart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	seqDef *sequences;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	BYTE *litStart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 	BYTE *lit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	BYTE *llCode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	BYTE *mlCode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	BYTE *ofCode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	U32 longLengthID; /* 0 == no longLength; 1 == Lit.longLength; 2 == Match.longLength; */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	U32 longLengthPos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	/* opt */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	ZSTD_optimal_t *priceTable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	ZSTD_match_t *matchTable;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	U32 *matchLengthFreq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	U32 *litLengthFreq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	U32 *litFreq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	U32 *offCodeFreq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	U32 matchLengthSum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	U32 matchSum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	U32 litLengthSum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	U32 litSum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	U32 offCodeSum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	U32 log2matchLengthSum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	U32 log2matchSum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	U32 log2litLengthSum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	U32 log2litSum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	U32 log2offCodeSum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	U32 factor;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	U32 staticPrices;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	U32 cachedPrice;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	U32 cachedLitLength;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	const BYTE *cachedLiterals;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) } seqStore_t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) const seqStore_t *ZSTD_getSeqStore(const ZSTD_CCtx *ctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) void ZSTD_seqToCodes(const seqStore_t *seqStorePtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) int ZSTD_isSkipFrame(ZSTD_DCtx *dctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) /*= Custom memory allocation functions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) typedef void *(*ZSTD_allocFunction)(void *opaque, size_t size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) typedef void (*ZSTD_freeFunction)(void *opaque, void *address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	ZSTD_allocFunction customAlloc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	ZSTD_freeFunction customFree;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	void *opaque;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) } ZSTD_customMem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) void *ZSTD_malloc(size_t size, ZSTD_customMem customMem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) void ZSTD_free(void *ptr, ZSTD_customMem customMem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) /*====== stack allocation  ======*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) typedef struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 	void *ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	const void *end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) } ZSTD_stack;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) #define ZSTD_ALIGN(x) ALIGN(x, sizeof(size_t))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) #define ZSTD_PTR_ALIGN(p) PTR_ALIGN(p, sizeof(size_t))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) ZSTD_customMem ZSTD_initStack(void *workspace, size_t workspaceSize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) void *ZSTD_stackAllocAll(void *opaque, size_t *size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) void *ZSTD_stackAlloc(void *opaque, size_t size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) void ZSTD_stackFree(void *opaque, void *address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) /*======  common function  ======*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) ZSTD_STATIC U32 ZSTD_highbit32(U32 val) { return 31 - __builtin_clz(val); }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) /* hidden functions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) /* ZSTD_invalidateRepCodes() :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)  * ensures next compression will not use repcodes from previous block.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)  * Note : only works with regular variant;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)  *        do not use with extDict variant ! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) void ZSTD_invalidateRepCodes(ZSTD_CCtx *cctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) size_t ZSTD_freeCCtx(ZSTD_CCtx *cctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) size_t ZSTD_freeDCtx(ZSTD_DCtx *dctx);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) size_t ZSTD_freeCDict(ZSTD_CDict *cdict);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) size_t ZSTD_freeDDict(ZSTD_DDict *cdict);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) size_t ZSTD_freeCStream(ZSTD_CStream *zcs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) size_t ZSTD_freeDStream(ZSTD_DStream *zds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) #endif /* ZSTD_CCOMMON_H_MODULE */