src/liblzma/check/crc64_table.c

   1 ///////////////////////////////////////////////////////////////////////////////
   2 //
   3 /// \file       crc64_table.c
   4 /// \brief      Precalculated CRC64 table with correct endianness
   5 //
   6 //  Author:     Lasse Collin
   7 //
   8 //  This file has been put into the public domain.
   9 //  You can do whatever you want with this file.
  10 //
  11 ///////////////////////////////////////////////////////////////////////////////
  12
  13 #include "common.h"
  14
  15
  16 // FIXME: Compared to crc64_fast.c this has to check for __x86_64__ too
  17 // so that in 32-bit builds crc64_x86.S won't break due to a missing table.
  18 #if (defined(__x86_64__) && defined(__SSSE3__) \
  19                         && defined(__SSE4_1__) && defined(__PCLMUL__)) \
  20                 || (defined(__e2k__) && __iset__ >= 6)
  21 // No table needed but something has to be exported to keep some toolchains
  22 // happy. Also use a declaration to silence compiler warnings.
  23 extern const char lzma_crc64_dummy;
  24 const char lzma_crc64_dummy;
  25
  26 #else
  27 // Having the declaration here silences clang -Wmissing-variable-declarations.
  28 extern const uint64_t lzma_crc64_table[4][256];
  29
  30 #       if defined(WORDS_BIGENDIAN)
  31 #               include "crc64_table_be.h"
  32 #       else
  33 #               include "crc64_table_le.h"
  34 #       endif
  35 #endif