$NetBSD$ * Part of patchset to build electron on NetBSD * Based on OpenBSD's chromium patches, and FreeBSD's electron patches --- third_party/lzma_sdk/C/7zCrc.c.orig 2025-02-24 19:59:26.000000000 +0000 +++ third_party/lzma_sdk/C/7zCrc.c @@ -1,182 +1,218 @@ -/* 7zCrc.c -- CRC32 init -2021-04-01 : Igor Pavlov : Public domain */ +/* 7zCrc.c -- CRC32 calculation and init +2024-03-01 : Igor Pavlov : Public domain */ #include "Precomp.h" #include "7zCrc.h" #include "CpuArch.h" -#define kCrcPoly 0xEDB88320 +// for debug: +// #define __ARM_FEATURE_CRC32 1 -#ifdef MY_CPU_LE - #define CRC_NUM_TABLES 8 -#else - #define CRC_NUM_TABLES 9 - - #define CRC_UINT32_SWAP(v) ((v >> 24) | ((v >> 8) & 0xFF00) | ((v << 8) & 0xFF0000) | (v << 24)) - - UInt32 MY_FAST_CALL CrcUpdateT1_BeT4(UInt32 v, const void *data, size_t size, const UInt32 *table); - UInt32 MY_FAST_CALL CrcUpdateT1_BeT8(UInt32 v, const void *data, size_t size, const UInt32 *table); +#ifdef __ARM_FEATURE_CRC32 +// #pragma message("__ARM_FEATURE_CRC32") +#define Z7_CRC_HW_FORCE #endif -#ifndef MY_CPU_BE - UInt32 MY_FAST_CALL CrcUpdateT4(UInt32 v, const void *data, size_t size, const UInt32 *table); - UInt32 MY_FAST_CALL CrcUpdateT8(UInt32 v, const void *data, size_t size, const UInt32 *table); +// #define Z7_CRC_DEBUG_BE +#ifdef Z7_CRC_DEBUG_BE +#undef MY_CPU_LE +#define MY_CPU_BE #endif -typedef UInt32 (MY_FAST_CALL *CRC_FUNC)(UInt32 v, const void *data, size_t size, const UInt32 *table); - -extern -CRC_FUNC g_CrcUpdateT4; -CRC_FUNC g_CrcUpdateT4; -extern -CRC_FUNC g_CrcUpdateT8; -CRC_FUNC g_CrcUpdateT8; -extern -CRC_FUNC g_CrcUpdateT0_32; -CRC_FUNC g_CrcUpdateT0_32; -extern -CRC_FUNC g_CrcUpdateT0_64; -CRC_FUNC g_CrcUpdateT0_64; -extern -CRC_FUNC g_CrcUpdate; -CRC_FUNC g_CrcUpdate; - -UInt32 g_CrcTable[256 * CRC_NUM_TABLES]; +#ifdef Z7_CRC_HW_FORCE + #define Z7_CRC_NUM_TABLES_USE 1 +#else +#ifdef Z7_CRC_NUM_TABLES + #define Z7_CRC_NUM_TABLES_USE Z7_CRC_NUM_TABLES +#else + #define Z7_CRC_NUM_TABLES_USE 12 +#endif +#endif -UInt32 MY_FAST_CALL CrcUpdate(UInt32 v, const void *data, size_t size) -{ - return g_CrcUpdate(v, data, size, g_CrcTable); -} +#if Z7_CRC_NUM_TABLES_USE < 1 + #error Stop_Compiling_Bad_Z7_CRC_NUM_TABLES +#endif -UInt32 MY_FAST_CALL CrcCalc(const void *data, size_t size) -{ - return g_CrcUpdate(CRC_INIT_VAL, data, size, g_CrcTable) ^ CRC_INIT_VAL; -} +#if defined(MY_CPU_LE) || (Z7_CRC_NUM_TABLES_USE == 1) + #define Z7_CRC_NUM_TABLES_TOTAL Z7_CRC_NUM_TABLES_USE +#else + #define Z7_CRC_NUM_TABLES_TOTAL (Z7_CRC_NUM_TABLES_USE + 1) +#endif -#define CRC_UPDATE_BYTE_2(crc, b) (table[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8)) +#ifndef Z7_CRC_HW_FORCE -UInt32 MY_FAST_CALL CrcUpdateT1(UInt32 v, const void *data, size_t size, const UInt32 *table); -UInt32 MY_FAST_CALL CrcUpdateT1(UInt32 v, const void *data, size_t size, const UInt32 *table) +#if Z7_CRC_NUM_TABLES_USE == 1 \ + || (!defined(MY_CPU_LE) && !defined(MY_CPU_BE)) +#define CRC_UPDATE_BYTE_2(crc, b) (table[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8)) +#define Z7_CRC_UPDATE_T1_FUNC_NAME CrcUpdateGT1 +static UInt32 Z7_FASTCALL Z7_CRC_UPDATE_T1_FUNC_NAME(UInt32 v, const void *data, size_t size) { + const UInt32 *table = g_CrcTable; const Byte *p = (const Byte *)data; - const Byte *pEnd = p + size; - for (; p != pEnd; p++) + const Byte *lim = p + size; + for (; p != lim; p++) v = CRC_UPDATE_BYTE_2(v, *p); return v; } +#endif +#if Z7_CRC_NUM_TABLES_USE != 1 +#ifndef MY_CPU_BE + #define FUNC_NAME_LE_2(s) CrcUpdateT ## s + #define FUNC_NAME_LE_1(s) FUNC_NAME_LE_2(s) + #define FUNC_NAME_LE FUNC_NAME_LE_1(Z7_CRC_NUM_TABLES_USE) + UInt32 Z7_FASTCALL FUNC_NAME_LE (UInt32 v, const void *data, size_t size, const UInt32 *table); +#endif +#ifndef MY_CPU_LE + #define FUNC_NAME_BE_2(s) CrcUpdateT1_BeT ## s + #define FUNC_NAME_BE_1(s) FUNC_NAME_BE_2(s) + #define FUNC_NAME_BE FUNC_NAME_BE_1(Z7_CRC_NUM_TABLES_USE) + UInt32 Z7_FASTCALL FUNC_NAME_BE (UInt32 v, const void *data, size_t size, const UInt32 *table); +#endif +#endif + +#endif // Z7_CRC_HW_FORCE + /* ---------- hardware CRC ---------- */ #ifdef MY_CPU_LE #if defined(MY_CPU_ARM_OR_ARM64) - // #pragma message("ARM*") - #if defined(_MSC_VER) - #if defined(MY_CPU_ARM64) - #if (_MSC_VER >= 1910) - // #define USE_ARM64_CRC - #endif - #endif - #elif (defined(__clang__) && (__clang_major__ >= 3)) \ - || (defined(__GNUC__) && (__GNUC__ > 4)) + #if (defined(__clang__) && (__clang_major__ >= 3)) \ + || defined(__GNUC__) && (__GNUC__ >= 6) && defined(MY_CPU_ARM64) \ + || defined(__GNUC__) && (__GNUC__ >= 8) #if !defined(__ARM_FEATURE_CRC32) - // #define __ARM_FEATURE_CRC32 1 - #if (!defined(__clang__) || (__clang_major__ > 3)) // fix these numbers - // #define ATTRIB_CRC __attribute__((__target__("arch=armv8-a+crc"))) +// #pragma message("!defined(__ARM_FEATURE_CRC32)") +Z7_DIAGNOSTIC_IGNORE_BEGIN_RESERVED_MACRO_IDENTIFIER + #define __ARM_FEATURE_CRC32 1 +Z7_DIAGNOSTIC_IGNORE_END_RESERVED_MACRO_IDENTIFIER + #define Z7_ARM_FEATURE_CRC32_WAS_SET + #if defined(__clang__) + #if defined(MY_CPU_ARM64) + #define ATTRIB_CRC __attribute__((__target__("crc"))) + #else + #define ATTRIB_CRC __attribute__((__target__("armv8-a,crc"))) + #endif + #else + #if defined(MY_CPU_ARM64) +#if !defined(Z7_GCC_VERSION) || (Z7_GCC_VERSION >= 60000) + #define ATTRIB_CRC __attribute__((__target__("+crc"))) +#endif + #else +#if !defined(Z7_GCC_VERSION) || (__GNUC__ >= 8) +#if defined(__ARM_FP) && __GNUC__ >= 8 +// for -mfloat-abi=hard: similar to + #define ATTRIB_CRC __attribute__((__target__("arch=armv8-a+crc+simd"))) +#else + #define ATTRIB_CRC __attribute__((__target__("arch=armv8-a+crc"))) +#endif +#endif #endif + #endif #endif #if defined(__ARM_FEATURE_CRC32) - // #define USE_ARM64_CRC - // #include + // #pragma message("") +/* +arm_acle.h (GGC): + before Nov 17, 2017: +#ifdef __ARM_FEATURE_CRC32 + + Nov 17, 2017: gcc10.0 (gcc 9.2.0) checked" +#if __ARM_ARCH >= 8 +#pragma GCC target ("arch=armv8-a+crc") + + Aug 22, 2019: GCC 8.4?, 9.2.1, 10.1: +#ifdef __ARM_FEATURE_CRC32 +#ifdef __ARM_FP +#pragma GCC target ("arch=armv8-a+crc+simd") +#else +#pragma GCC target ("arch=armv8-a+crc") +#endif +*/ +#if defined(__ARM_ARCH) && __ARM_ARCH < 8 +#if defined(Z7_GCC_VERSION) && (__GNUC__ == 8) && (Z7_GCC_VERSION < 80400) \ + || defined(Z7_GCC_VERSION) && (__GNUC__ == 9) && (Z7_GCC_VERSION < 90201) \ + || defined(Z7_GCC_VERSION) && (__GNUC__ == 10) && (Z7_GCC_VERSION < 100100) +Z7_DIAGNOSTIC_IGNORE_BEGIN_RESERVED_MACRO_IDENTIFIER +// #pragma message("#define __ARM_ARCH 8") +#undef __ARM_ARCH +#define __ARM_ARCH 8 +Z7_DIAGNOSTIC_IGNORE_END_RESERVED_MACRO_IDENTIFIER +#endif +#endif + #define Z7_CRC_HW_USE + #include #endif + #elif defined(_MSC_VER) + #if defined(MY_CPU_ARM64) + #if (_MSC_VER >= 1910) + #ifdef __clang__ + // #define Z7_CRC_HW_USE + // #include + #else + #define Z7_CRC_HW_USE + #include + #endif + #endif + #endif #endif -#else - -// no hardware CRC - -// #define USE_CRC_EMU +#else // non-ARM* -#ifdef USE_CRC_EMU - -#pragma message("ARM64 CRC emulation") - -MY_FORCE_INLINE -UInt32 __crc32b(UInt32 v, UInt32 data) -{ - const UInt32 *table = g_CrcTable; - v = CRC_UPDATE_BYTE_2(v, (Byte)data); - return v; -} - -MY_FORCE_INLINE -UInt32 __crc32w(UInt32 v, UInt32 data) -{ - const UInt32 *table = g_CrcTable; - v = CRC_UPDATE_BYTE_2(v, (Byte)data); data >>= 8; - v = CRC_UPDATE_BYTE_2(v, (Byte)data); data >>= 8; - v = CRC_UPDATE_BYTE_2(v, (Byte)data); data >>= 8; - v = CRC_UPDATE_BYTE_2(v, (Byte)data); data >>= 8; - return v; -} +// #define Z7_CRC_HW_USE // for debug : we can test HW-branch of code +#ifdef Z7_CRC_HW_USE +#include "7zCrcEmu.h" +#endif -MY_FORCE_INLINE -UInt32 __crc32d(UInt32 v, UInt64 data) -{ - const UInt32 *table = g_CrcTable; - v = CRC_UPDATE_BYTE_2(v, (Byte)data); data >>= 8; - v = CRC_UPDATE_BYTE_2(v, (Byte)data); data >>= 8; - v = CRC_UPDATE_BYTE_2(v, (Byte)data); data >>= 8; - v = CRC_UPDATE_BYTE_2(v, (Byte)data); data >>= 8; - v = CRC_UPDATE_BYTE_2(v, (Byte)data); data >>= 8; - v = CRC_UPDATE_BYTE_2(v, (Byte)data); data >>= 8; - v = CRC_UPDATE_BYTE_2(v, (Byte)data); data >>= 8; - v = CRC_UPDATE_BYTE_2(v, (Byte)data); data >>= 8; - return v; -} +#endif // non-ARM* -#endif // USE_CRC_EMU -#endif // defined(MY_CPU_ARM64) && defined(MY_CPU_LE) +#if defined(Z7_CRC_HW_USE) +// #pragma message("USE ARM HW CRC") -#if defined(USE_ARM64_CRC) || defined(USE_CRC_EMU) +#ifdef MY_CPU_64BIT + #define CRC_HW_WORD_TYPE UInt64 + #define CRC_HW_WORD_FUNC __crc32d +#else + #define CRC_HW_WORD_TYPE UInt32 + #define CRC_HW_WORD_FUNC __crc32w +#endif -#define T0_32_UNROLL_BYTES (4 * 4) -#define T0_64_UNROLL_BYTES (4 * 8) +#define CRC_HW_UNROLL_BYTES (sizeof(CRC_HW_WORD_TYPE) * 4) -#ifndef ATTRIB_CRC -#define ATTRIB_CRC +#ifdef ATTRIB_CRC + ATTRIB_CRC #endif -// #pragma message("USE ARM HW CRC") - -ATTRIB_CRC -UInt32 MY_FAST_CALL CrcUpdateT0_32(UInt32 v, const void *data, size_t size, const UInt32 *table); -ATTRIB_CRC -UInt32 MY_FAST_CALL CrcUpdateT0_32(UInt32 v, const void *data, size_t size, const UInt32 *table) +Z7_NO_INLINE +#ifdef Z7_CRC_HW_FORCE + UInt32 Z7_FASTCALL CrcUpdate +#else + static UInt32 Z7_FASTCALL CrcUpdate_HW +#endif + (UInt32 v, const void *data, size_t size) { const Byte *p = (const Byte *)data; - UNUSED_VAR(table); - - for (; size != 0 && ((unsigned)(ptrdiff_t)p & (T0_32_UNROLL_BYTES - 1)) != 0; size--) + for (; size != 0 && ((unsigned)(ptrdiff_t)p & (CRC_HW_UNROLL_BYTES - 1)) != 0; size--) v = __crc32b(v, *p++); - - if (size >= T0_32_UNROLL_BYTES) + if (size >= CRC_HW_UNROLL_BYTES) { const Byte *lim = p + size; - size &= (T0_32_UNROLL_BYTES - 1); + size &= CRC_HW_UNROLL_BYTES - 1; lim -= size; do { - v = __crc32w(v, *(const UInt32 *)(const void *)(p)); - v = __crc32w(v, *(const UInt32 *)(const void *)(p + 4)); p += 2 * 4; - v = __crc32w(v, *(const UInt32 *)(const void *)(p)); - v = __crc32w(v, *(const UInt32 *)(const void *)(p + 4)); p += 2 * 4; + v = CRC_HW_WORD_FUNC(v, *(const CRC_HW_WORD_TYPE *)(const void *)(p)); + v = CRC_HW_WORD_FUNC(v, *(const CRC_HW_WORD_TYPE *)(const void *)(p + sizeof(CRC_HW_WORD_TYPE))); + p += 2 * sizeof(CRC_HW_WORD_TYPE); + v = CRC_HW_WORD_FUNC(v, *(const CRC_HW_WORD_TYPE *)(const void *)(p)); + v = CRC_HW_WORD_FUNC(v, *(const CRC_HW_WORD_TYPE *)(const void *)(p + sizeof(CRC_HW_WORD_TYPE))); + p += 2 * sizeof(CRC_HW_WORD_TYPE); } while (p != lim); } @@ -187,136 +223,198 @@ UInt32 MY_FAST_CALL CrcUpdateT0_32(UInt3 return v; } -ATTRIB_CRC -UInt32 MY_FAST_CALL CrcUpdateT0_64(UInt32 v, const void *data, size_t size, const UInt32 *table); -ATTRIB_CRC -UInt32 MY_FAST_CALL CrcUpdateT0_64(UInt32 v, const void *data, size_t size, const UInt32 *table) +#ifdef Z7_ARM_FEATURE_CRC32_WAS_SET +Z7_DIAGNOSTIC_IGNORE_BEGIN_RESERVED_MACRO_IDENTIFIER +#undef __ARM_FEATURE_CRC32 +Z7_DIAGNOSTIC_IGNORE_END_RESERVED_MACRO_IDENTIFIER +#undef Z7_ARM_FEATURE_CRC32_WAS_SET +#endif + +#endif // defined(Z7_CRC_HW_USE) +#endif // MY_CPU_LE + + + +#ifndef Z7_CRC_HW_FORCE + +#if defined(Z7_CRC_HW_USE) || defined(Z7_CRC_UPDATE_T1_FUNC_NAME) +/* +typedef UInt32 (Z7_FASTCALL *Z7_CRC_UPDATE_WITH_TABLE_FUNC) + (UInt32 v, const void *data, size_t size, const UInt32 *table); +Z7_CRC_UPDATE_WITH_TABLE_FUNC g_CrcUpdate; +*/ +static unsigned g_Crc_Algo; +#if (!defined(MY_CPU_LE) && !defined(MY_CPU_BE)) +static unsigned g_Crc_Be; +#endif +#endif // defined(Z7_CRC_HW_USE) || defined(Z7_CRC_UPDATE_T1_FUNC_NAME) + + + +Z7_NO_INLINE +#ifdef Z7_CRC_HW_USE + static UInt32 Z7_FASTCALL CrcUpdate_Base +#else + UInt32 Z7_FASTCALL CrcUpdate +#endif + (UInt32 crc, const void *data, size_t size) { - const Byte *p = (const Byte *)data; - UNUSED_VAR(table); +#if Z7_CRC_NUM_TABLES_USE == 1 + return Z7_CRC_UPDATE_T1_FUNC_NAME(crc, data, size); +#else // Z7_CRC_NUM_TABLES_USE != 1 +#ifdef Z7_CRC_UPDATE_T1_FUNC_NAME + if (g_Crc_Algo == 1) + return Z7_CRC_UPDATE_T1_FUNC_NAME(crc, data, size); +#endif - for (; size != 0 && ((unsigned)(ptrdiff_t)p & (T0_64_UNROLL_BYTES - 1)) != 0; size--) - v = __crc32b(v, *p++); +#ifdef MY_CPU_LE + return FUNC_NAME_LE(crc, data, size, g_CrcTable); +#elif defined(MY_CPU_BE) + return FUNC_NAME_BE(crc, data, size, g_CrcTable); +#else + if (g_Crc_Be) + return FUNC_NAME_BE(crc, data, size, g_CrcTable); + else + return FUNC_NAME_LE(crc, data, size, g_CrcTable); +#endif +#endif // Z7_CRC_NUM_TABLES_USE != 1 +} - if (size >= T0_64_UNROLL_BYTES) - { - const Byte *lim = p + size; - size &= (T0_64_UNROLL_BYTES - 1); - lim -= size; - do - { - v = __crc32d(v, *(const UInt64 *)(const void *)(p)); - v = __crc32d(v, *(const UInt64 *)(const void *)(p + 8)); p += 2 * 8; - v = __crc32d(v, *(const UInt64 *)(const void *)(p)); - v = __crc32d(v, *(const UInt64 *)(const void *)(p + 8)); p += 2 * 8; - } - while (p != lim); - } - - for (; size != 0; size--) - v = __crc32b(v, *p++); - return v; +#ifdef Z7_CRC_HW_USE +Z7_NO_INLINE +UInt32 Z7_FASTCALL CrcUpdate(UInt32 crc, const void *data, size_t size) +{ + if (g_Crc_Algo == 0) + return CrcUpdate_HW(crc, data, size); + return CrcUpdate_Base(crc, data, size); } +#endif -#endif // defined(USE_ARM64_CRC) || defined(USE_CRC_EMU) +#endif // !defined(Z7_CRC_HW_FORCE) -#endif // MY_CPU_LE +UInt32 Z7_FASTCALL CrcCalc(const void *data, size_t size) +{ + return CrcUpdate(CRC_INIT_VAL, data, size) ^ CRC_INIT_VAL; +} + + +MY_ALIGN(64) +UInt32 g_CrcTable[256 * Z7_CRC_NUM_TABLES_TOTAL]; -void MY_FAST_CALL CrcGenerateTable() +void Z7_FASTCALL CrcGenerateTable(void) { UInt32 i; for (i = 0; i < 256; i++) { +#if defined(Z7_CRC_HW_FORCE) + g_CrcTable[i] = __crc32b(i, 0); +#else + #define kCrcPoly 0xEDB88320 UInt32 r = i; unsigned j; for (j = 0; j < 8; j++) r = (r >> 1) ^ (kCrcPoly & ((UInt32)0 - (r & 1))); g_CrcTable[i] = r; +#endif } - for (i = 256; i < 256 * CRC_NUM_TABLES; i++) + for (i = 256; i < 256 * Z7_CRC_NUM_TABLES_USE; i++) { - UInt32 r = g_CrcTable[(size_t)i - 256]; + const UInt32 r = g_CrcTable[(size_t)i - 256]; g_CrcTable[i] = g_CrcTable[r & 0xFF] ^ (r >> 8); } - #if CRC_NUM_TABLES < 4 - - g_CrcUpdate = CrcUpdateT1; - - #else - - #ifdef MY_CPU_LE +#if !defined(Z7_CRC_HW_FORCE) && \ + (defined(Z7_CRC_HW_USE) || defined(Z7_CRC_UPDATE_T1_FUNC_NAME) || defined(MY_CPU_BE)) - g_CrcUpdateT4 = CrcUpdateT4; - g_CrcUpdate = CrcUpdateT4; - - #if CRC_NUM_TABLES >= 8 - g_CrcUpdateT8 = CrcUpdateT8; - - #ifdef MY_CPU_X86_OR_AMD64 - if (!CPU_Is_InOrder()) - #endif - g_CrcUpdate = CrcUpdateT8; - #endif - - #else +#if Z7_CRC_NUM_TABLES_USE <= 1 + g_Crc_Algo = 1; +#else // Z7_CRC_NUM_TABLES_USE <= 1 + +#if defined(MY_CPU_LE) + g_Crc_Algo = Z7_CRC_NUM_TABLES_USE; +#else // !defined(MY_CPU_LE) { - #ifndef MY_CPU_BE +#ifndef MY_CPU_BE UInt32 k = 0x01020304; const Byte *p = (const Byte *)&k; if (p[0] == 4 && p[1] == 3) - { - g_CrcUpdateT4 = CrcUpdateT4; - g_CrcUpdate = CrcUpdateT4; - #if CRC_NUM_TABLES >= 8 - g_CrcUpdateT8 = CrcUpdateT8; - g_CrcUpdate = CrcUpdateT8; - #endif - } + g_Crc_Algo = Z7_CRC_NUM_TABLES_USE; else if (p[0] != 1 || p[1] != 2) - g_CrcUpdate = CrcUpdateT1; + g_Crc_Algo = 1; else - #endif +#endif // MY_CPU_BE { - for (i = 256 * CRC_NUM_TABLES - 1; i >= 256; i--) + for (i = 256 * Z7_CRC_NUM_TABLES_TOTAL - 1; i >= 256; i--) { - UInt32 x = g_CrcTable[(size_t)i - 256]; - g_CrcTable[i] = CRC_UINT32_SWAP(x); + const UInt32 x = g_CrcTable[(size_t)i - 256]; + g_CrcTable[i] = Z7_BSWAP32(x); } - g_CrcUpdateT4 = CrcUpdateT1_BeT4; - g_CrcUpdate = CrcUpdateT1_BeT4; - #if CRC_NUM_TABLES >= 8 - g_CrcUpdateT8 = CrcUpdateT1_BeT8; - g_CrcUpdate = CrcUpdateT1_BeT8; - #endif +#if defined(Z7_CRC_UPDATE_T1_FUNC_NAME) + g_Crc_Algo = Z7_CRC_NUM_TABLES_USE; +#endif +#if (!defined(MY_CPU_LE) && !defined(MY_CPU_BE)) + g_Crc_Be = 1; +#endif } } - #endif - #endif +#endif // !defined(MY_CPU_LE) - #ifdef MY_CPU_LE - #ifdef USE_ARM64_CRC - if (CPU_IsSupported_CRC32()) - { - g_CrcUpdateT0_32 = CrcUpdateT0_32; - g_CrcUpdateT0_64 = CrcUpdateT0_64; - g_CrcUpdate = - #if defined(MY_CPU_ARM) - CrcUpdateT0_32; - #else - CrcUpdateT0_64; - #endif - } - #endif - - #ifdef USE_CRC_EMU - g_CrcUpdateT0_32 = CrcUpdateT0_32; - g_CrcUpdateT0_64 = CrcUpdateT0_64; - g_CrcUpdate = CrcUpdateT0_64; - #endif +#ifdef MY_CPU_LE +#ifdef Z7_CRC_HW_USE + if (CPU_IsSupported_CRC32()) + g_Crc_Algo = 0; +#endif // Z7_CRC_HW_USE +#endif // MY_CPU_LE + +#endif // Z7_CRC_NUM_TABLES_USE <= 1 +#endif // g_Crc_Algo was declared +} + +Z7_CRC_UPDATE_FUNC z7_GetFunc_CrcUpdate(unsigned algo) +{ + if (algo == 0) + return &CrcUpdate; + +#if defined(Z7_CRC_HW_USE) + if (algo == sizeof(CRC_HW_WORD_TYPE) * 8) + { +#ifdef Z7_CRC_HW_FORCE + return &CrcUpdate; +#else + if (g_Crc_Algo == 0) + return &CrcUpdate_HW; +#endif + } +#endif + +#ifndef Z7_CRC_HW_FORCE + if (algo == Z7_CRC_NUM_TABLES_USE) + return + #ifdef Z7_CRC_HW_USE + &CrcUpdate_Base; + #else + &CrcUpdate; #endif +#endif + + return NULL; } + +#undef kCrcPoly +#undef Z7_CRC_NUM_TABLES_USE +#undef Z7_CRC_NUM_TABLES_TOTAL +#undef CRC_UPDATE_BYTE_2 +#undef FUNC_NAME_LE_2 +#undef FUNC_NAME_LE_1 +#undef FUNC_NAME_LE +#undef FUNC_NAME_BE_2 +#undef FUNC_NAME_BE_1 +#undef FUNC_NAME_BE + +#undef CRC_HW_UNROLL_BYTES +#undef CRC_HW_WORD_FUNC +#undef CRC_HW_WORD_TYPE