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Diffstat (limited to 'package/system/fwtool/src/crc32.h')
| -rw-r--r-- | package/system/fwtool/src/crc32.h | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/package/system/fwtool/src/crc32.h b/package/system/fwtool/src/crc32.h deleted file mode 100644 index 022c69fc7f..0000000000 --- a/package/system/fwtool/src/crc32.h +++ /dev/null @@ -1,48 +0,0 @@ -/* - * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name> - * - * Based on busybox code: - * CRC32 table fill function - * Copyright (C) 2006 by Rob Sullivan <cogito.ergo.cogito@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 - * as published by the Free Software Foundation - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ -#ifndef __BB_CRC32_H -#define __BB_CRC32_H - -static inline void -crc32_filltable(uint32_t *crc_table) -{ - uint32_t polynomial = 0xedb88320; - uint32_t c; - int i, j; - - for (i = 0; i < 256; i++) { - c = i; - for (j = 8; j; j--) - c = (c&1) ? ((c >> 1) ^ polynomial) : (c >> 1); - - *crc_table++ = c; - } -} - -static inline uint32_t -crc32_block(uint32_t val, const void *buf, unsigned len, uint32_t *crc_table) -{ - const void *end = (uint8_t*)buf + len; - - while (buf != end) { - val = crc_table[(uint8_t)val ^ *(uint8_t*)buf] ^ (val >> 8); - buf = (uint8_t*)buf + 1; - } - return val; -} - -#endif |