1 // SPDX-License-Identifier: 0BSD 2 3 /////////////////////////////////////////////////////////////////////////////// 4 // 5 /// \file crc64_table.c 6 /// \brief Precalculated CRC64 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 crc64_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 X86_CLMUL_NO_TABLE 1 21 #endif 22 23 24 #ifdef X86_CLMUL_NO_TABLE 25 // No table needed. Use a typedef to avoid an empty translation unit. 26 typedef void lzma_crc64_dummy; 27 28 #else 29 // Having the declaration here silences clang -Wmissing-variable-declarations. 30 extern const uint64_t lzma_crc64_table[4][256]; 31 32 # if defined(WORDS_BIGENDIAN) 33 # include "crc64_table_be.h" 34 # else 35 # include "crc64_table_le.h" 36 # endif 37 #endif 38