1// SPDX-License-Identifier: 0BSD 2 3/////////////////////////////////////////////////////////////////////////////// 4// 5/// \file crc32_table.c 6/// \brief Precalculated CRC32 table with correct endianness 7// 8// Author: Lasse Collin 9// 10/////////////////////////////////////////////////////////////////////////////// 11 12#include "common.h" 13 14 15// FIXME: Compared to crc_common.h this has to check for __x86_64__ too 16// so that in 32-bit builds crc32_x86.S won't break due to a missing table. 17#if defined(HAVE_USABLE_CLMUL) && ((defined(__x86_64__) && defined(__SSSE3__) \ 18 && defined(__SSE4_1__) && defined(__PCLMUL__)) \ 19 || (defined(__e2k__) && __iset__ >= 6)) 20# define NO_CRC32_TABLE 21 22#elif defined(HAVE_ARM64_CRC32) \ 23 && !defined(WORDS_BIGENDIAN) \ 24 && defined(__ARM_FEATURE_CRC32) 25# define NO_CRC32_TABLE 26#endif 27 28 29#if !defined(HAVE_ENCODERS) && defined(NO_CRC32_TABLE) 30// No table needed. Use a typedef to avoid an empty translation unit. 31typedef void lzma_crc32_dummy; 32 33#else 34// Having the declaration here silences clang -Wmissing-variable-declarations. 35extern const uint32_t lzma_crc32_table[8][256]; 36 37# ifdef WORDS_BIGENDIAN 38# include "crc32_table_be.h" 39# else 40# include "crc32_table_le.h" 41# endif 42#endif 43