diff options
Diffstat (limited to '3rdparty/lzma/C/XzCrc64Opt.c')
-rw-r--r-- | 3rdparty/lzma/C/XzCrc64Opt.c | 54 |
1 files changed, 23 insertions, 31 deletions
diff --git a/3rdparty/lzma/C/XzCrc64Opt.c b/3rdparty/lzma/C/XzCrc64Opt.c index c4fde65a10b..d03374c0063 100644 --- a/3rdparty/lzma/C/XzCrc64Opt.c +++ b/3rdparty/lzma/C/XzCrc64Opt.c @@ -1,5 +1,5 @@ /* XzCrc64Opt.c -- CRC64 calculation -2015-03-01 : Igor Pavlov : Public domain */ +2023-04-02 : Igor Pavlov : Public domain */ #include "Precomp.h" @@ -7,24 +7,25 @@ #ifndef MY_CPU_BE -#define CRC_UPDATE_BYTE_2(crc, b) (table[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8)) +#define CRC64_UPDATE_BYTE_2(crc, b) (table[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8)) -UInt64 MY_FAST_CALL XzCrc64UpdateT4(UInt64 v, const void *data, size_t size, const UInt64 *table) +UInt64 Z7_FASTCALL XzCrc64UpdateT4(UInt64 v, const void *data, size_t size, const UInt64 *table); +UInt64 Z7_FASTCALL XzCrc64UpdateT4(UInt64 v, const void *data, size_t size, const UInt64 *table) { const Byte *p = (const Byte *)data; for (; size > 0 && ((unsigned)(ptrdiff_t)p & 3) != 0; size--, p++) - v = CRC_UPDATE_BYTE_2(v, *p); + v = CRC64_UPDATE_BYTE_2(v, *p); for (; size >= 4; size -= 4, p += 4) { - UInt32 d = (UInt32)v ^ *(const UInt32 *)p; + const UInt32 d = (UInt32)v ^ *(const UInt32 *)(const void *)p; v = (v >> 32) - ^ table[0x300 + ((d ) & 0xFF)] - ^ table[0x200 + ((d >> 8) & 0xFF)] - ^ table[0x100 + ((d >> 16) & 0xFF)] - ^ table[0x000 + ((d >> 24))]; + ^ (table + 0x300)[((d ) & 0xFF)] + ^ (table + 0x200)[((d >> 8) & 0xFF)] + ^ (table + 0x100)[((d >> 16) & 0xFF)] + ^ (table + 0x000)[((d >> 24))]; } for (; size > 0; size--, p++) - v = CRC_UPDATE_BYTE_2(v, *p); + v = CRC64_UPDATE_BYTE_2(v, *p); return v; } @@ -33,37 +34,28 @@ UInt64 MY_FAST_CALL XzCrc64UpdateT4(UInt64 v, const void *data, size_t size, con #ifndef MY_CPU_LE -#define CRC_UINT64_SWAP(v) \ - ((v >> 56) \ - | ((v >> 40) & ((UInt64)0xFF << 8)) \ - | ((v >> 24) & ((UInt64)0xFF << 16)) \ - | ((v >> 8) & ((UInt64)0xFF << 24)) \ - | ((v << 8) & ((UInt64)0xFF << 32)) \ - | ((v << 24) & ((UInt64)0xFF << 40)) \ - | ((v << 40) & ((UInt64)0xFF << 48)) \ - | ((v << 56))) +#define CRC64_UPDATE_BYTE_2_BE(crc, b) (table[(Byte)((crc) >> 56) ^ (b)] ^ ((crc) << 8)) -#define CRC_UPDATE_BYTE_2_BE(crc, b) (table[(Byte)((crc) >> 56) ^ (b)] ^ ((crc) << 8)) - -UInt64 MY_FAST_CALL XzCrc64UpdateT1_BeT4(UInt64 v, const void *data, size_t size, const UInt64 *table) +UInt64 Z7_FASTCALL XzCrc64UpdateT1_BeT4(UInt64 v, const void *data, size_t size, const UInt64 *table); +UInt64 Z7_FASTCALL XzCrc64UpdateT1_BeT4(UInt64 v, const void *data, size_t size, const UInt64 *table) { const Byte *p = (const Byte *)data; table += 0x100; - v = CRC_UINT64_SWAP(v); + v = Z7_BSWAP64(v); for (; size > 0 && ((unsigned)(ptrdiff_t)p & 3) != 0; size--, p++) - v = CRC_UPDATE_BYTE_2_BE(v, *p); + v = CRC64_UPDATE_BYTE_2_BE(v, *p); for (; size >= 4; size -= 4, p += 4) { - UInt32 d = (UInt32)(v >> 32) ^ *(const UInt32 *)p; + const UInt32 d = (UInt32)(v >> 32) ^ *(const UInt32 *)(const void *)p; v = (v << 32) - ^ table[0x000 + ((d ) & 0xFF)] - ^ table[0x100 + ((d >> 8) & 0xFF)] - ^ table[0x200 + ((d >> 16) & 0xFF)] - ^ table[0x300 + ((d >> 24))]; + ^ (table + 0x000)[((d ) & 0xFF)] + ^ (table + 0x100)[((d >> 8) & 0xFF)] + ^ (table + 0x200)[((d >> 16) & 0xFF)] + ^ (table + 0x300)[((d >> 24))]; } for (; size > 0; size--, p++) - v = CRC_UPDATE_BYTE_2_BE(v, *p); - return CRC_UINT64_SWAP(v); + v = CRC64_UPDATE_BYTE_2_BE(v, *p); + return Z7_BSWAP64(v); } #endif |