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Diffstat (limited to 'arch/arm/mvp/mvpkm/mvp_math.h')
| -rw-r--r-- | arch/arm/mvp/mvpkm/mvp_math.h | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/arch/arm/mvp/mvpkm/mvp_math.h b/arch/arm/mvp/mvpkm/mvp_math.h deleted file mode 100644 index 7017bc8..0000000 --- a/arch/arm/mvp/mvpkm/mvp_math.h +++ /dev/null @@ -1,133 +0,0 @@ -/* - * Linux 2.6.32 and later Kernel module for VMware MVP Hypervisor Support - * - * Copyright (C) 2010-2012 VMware, Inc. All rights reserved. - * - * 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. - * - * You should have received a copy of the GNU General Public License along with - * this program; see the file COPYING. If not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - */ -#line 5 - -/** - * @file - * - * @brief Math library. - */ - -#ifndef _MVP_MATH_H_ -#define _MVP_MATH_H_ - -#define INCLUDE_ALLOW_VMX -#define INCLUDE_ALLOW_PV -#define INCLUDE_ALLOW_MODULE -#define INCLUDE_ALLOW_MONITOR -#define INCLUDE_ALLOW_GPL -#define INCLUDE_ALLOW_HOSTUSER -#include "include_check.h" - -#include "mvp_compiler_gcc.h" - -/** - * @brief Compute floor log2 of a given 32-bit unsigned integer. - * - * @param n 32-bit unsigned integer, n > 0. - * - * @return floor(log2(n)). - */ -#define LOG2(n) \ -( \ - __builtin_constant_p(n) ? ( \ - (n) & (1UL << 31) ? 31 : \ - (n) & (1UL << 30) ? 30 : \ - (n) & (1UL << 29) ? 29 : \ - (n) & (1UL << 28) ? 28 : \ - (n) & (1UL << 27) ? 27 : \ - (n) & (1UL << 26) ? 26 : \ - (n) & (1UL << 25) ? 25 : \ - (n) & (1UL << 24) ? 24 : \ - (n) & (1UL << 23) ? 23 : \ - (n) & (1UL << 22) ? 22 : \ - (n) & (1UL << 21) ? 21 : \ - (n) & (1UL << 20) ? 20 : \ - (n) & (1UL << 19) ? 19 : \ - (n) & (1UL << 18) ? 18 : \ - (n) & (1UL << 17) ? 17 : \ - (n) & (1UL << 16) ? 16 : \ - (n) & (1UL << 15) ? 15 : \ - (n) & (1UL << 14) ? 14 : \ - (n) & (1UL << 13) ? 13 : \ - (n) & (1UL << 12) ? 12 : \ - (n) & (1UL << 11) ? 11 : \ - (n) & (1UL << 10) ? 10 : \ - (n) & (1UL << 9) ? 9 : \ - (n) & (1UL << 8) ? 8 : \ - (n) & (1UL << 7) ? 7 : \ - (n) & (1UL << 6) ? 6 : \ - (n) & (1UL << 5) ? 5 : \ - (n) & (1UL << 4) ? 4 : \ - (n) & (1UL << 3) ? 3 : \ - (n) & (1UL << 2) ? 2 : \ - (n) & (1UL << 1) ? 1 : \ - (n) & (1UL << 0) ? 0 : \ - 0xffffffff \ - ) : (uint32)(CLZ(1) - CLZ(n)) \ -) - -/** - * @brief Multiplicative hash function for 32-bit key and p-bit range. See p229 - * Introduction to Algorithms, Cormen, Leiserson and Rivest, 1996. - * - * @param key 32-bit key. - * @param p range order, <= 32. - * - * @return hash value in range [0..2^p) - */ -static inline uint32 -Math_MultiplicativeHash(uint32 key, uint32 p) -{ - return (key * 2654435769UL) >> (32 - p); -} - -/** - * @brief Compute ceiling log2 of a given 32-bit unsigned integer. - * - * @param n 32-bit unsigned integer, n > 0. - * - * @return ceiling(log2(n)). - */ -static inline uint32 CLOG2(uint32 n) -{ - return LOG2(n) + ((n & -n) != n); -} - - -/** - * @brief djb2 String hashing function by Dan Bernstein, see - * http://www.cse.yorku.ca/~oz/hash.html - * @param str String to hash - * @return 32-bit hash value - */ -static inline -uint32 Math_Djb2Hash(uint8 *str) -{ - uint32 hash = 5381; - int32 c; - - while ((c = *str++)) { - hash = ((hash << 5) + hash) + c; /* hash * 33 + c */ - } - - return hash; -} - -#endif // ifndef _MVP_MATH_H_ |