diff options
author | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2010-09-28 10:47:06 +0300 |
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committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2010-09-28 10:47:06 +0300 |
commit | 94a20240f9d6776619d7652013bb10131ddad1fc (patch) | |
tree | e92336c72820e7c6daa8468913fbcc523968d257 /ubi-utils/old-utils/src/crc32.c | |
parent | 351ac23f8d468b2b9bc60dfcbaacbe3d55ec11f9 (diff) |
ubi-utils: remove old ubi-utils
The utilities are unmaintained for long time, and many of them
do not even work, just compile, and no on complains about this.
This suggests they are unused and we can now safely kill them.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'ubi-utils/old-utils/src/crc32.c')
-rw-r--r-- | ubi-utils/old-utils/src/crc32.c | 83 |
1 files changed, 0 insertions, 83 deletions
diff --git a/ubi-utils/old-utils/src/crc32.c b/ubi-utils/old-utils/src/crc32.c deleted file mode 100644 index 666e217..0000000 --- a/ubi-utils/old-utils/src/crc32.c +++ /dev/null @@ -1,83 +0,0 @@ -/* - * Copyright (c) International Business Machines Corp., 2006 - * - * 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 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Author: Thomas Gleixner - */ - -/* - * CRC32 functions - * - * Can be compiled as seperate object, but is included into the ipl source - * so gcc can inline the functions. We optimize for size so the omission of - * the function frame is helpful. - * - */ - -#include <stdint.h> -#include <crc32.h> - -/* CRC polynomial */ -#define CRC_POLY 0xEDB88320 - -/** - * init_crc32_table - Initialize crc table - * - * @table: pointer to the CRC table which must be initialized - * - * Create CRC32 table for given polynomial. The table is created with - * the lowest order term in the highest order bit. So the x^32 term - * has to implied in the crc calculation function. - */ -void init_crc32_table(uint32_t *table) -{ - uint32_t crc; - int i, j; - - for (i = 0; i < 256; i++) { - crc = i; - for (j = 8; j > 0; j--) { - if (crc & 1) - crc = (crc >> 1) ^ CRC_POLY; - else - crc >>= 1; - } - table[i] = crc; - } -} - -/** - * clc_crc32 - Calculate CRC32 over a buffer - * - * @table: pointer to the CRC table - * @crc: initial crc value - * @buf: pointer to the buffer - * @len: number of bytes to calc - * - * Returns the updated crc value. - * - * The algorithm resembles a hardware shift register, but calculates 8 - * bit at once. - */ -uint32_t clc_crc32(uint32_t *table, uint32_t crc, void *buf, - int len) -{ - const unsigned char *p = buf; - - while(--len >= 0) - crc = table[(crc ^ *p++) & 0xff] ^ (crc >> 8); - return crc; -} |