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