diff options
Diffstat (limited to 'contrib/syslinux/latest/core/fs/btrfs/crc32c.h')
-rw-r--r-- | contrib/syslinux/latest/core/fs/btrfs/crc32c.h | 50 |
1 files changed, 0 insertions, 50 deletions
diff --git a/contrib/syslinux/latest/core/fs/btrfs/crc32c.h b/contrib/syslinux/latest/core/fs/btrfs/crc32c.h deleted file mode 100644 index 2c31738..0000000 --- a/contrib/syslinux/latest/core/fs/btrfs/crc32c.h +++ /dev/null @@ -1,50 +0,0 @@ -/* - * Copied from Linux kernel crypto/crc32c.c - * Copyright (c) 2004 Cisco Systems, Inc. - * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * - */ - -/* - * This is the CRC-32C table - * Generated with: - * width = 32 bits - * poly = 0x1EDC6F41 - * reflect input bytes = true - * reflect output bytes = true - */ - -static u32 crc32c_table[256]; - -/* - * Steps through buffer one byte at at time, calculates reflected - * crc using table. - */ - -static inline u32 crc32c_le(u32 crc, const char *data, size_t length) -{ - while (length--) - crc = crc32c_table[(u8)(crc ^ *data++)] ^ (crc >> 8); - - return crc; -} - -static inline void btrfs_init_crc32c(void) -{ - int i, j; - u32 v; - const u32 poly = 0x82F63B78; /* Bit-reflected CRC32C polynomial */ - - for (i = 0; i < 256; i++) { - v = i; - for (j = 0; j < 8; j++) { - v = (v >> 1) ^ ((v & 1) ? poly : 0); - } - crc32c_table[i] = v; - } -} |