| /* |
| * Copyright (C) 2012-2017 ARM Limited or its affiliates. |
| * |
| * 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; if not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| /*! |
| * \file cc_bitops.h |
| * Bit fields operations macros. |
| */ |
| #ifndef _CC_BITOPS_H_ |
| #define _CC_BITOPS_H_ |
| |
| #define BITMASK(mask_size) (((mask_size) < 32) ? \ |
| ((1UL << (mask_size)) - 1) : 0xFFFFFFFFUL) |
| #define BITMASK_AT(mask_size, mask_offset) (BITMASK(mask_size) << (mask_offset)) |
| |
| #define BITFIELD_GET(word, bit_offset, bit_size) \ |
| (((word) >> (bit_offset)) & BITMASK(bit_size)) |
| #define BITFIELD_SET(word, bit_offset, bit_size, new_val) do { \ |
| word = ((word) & ~BITMASK_AT(bit_size, bit_offset)) | \ |
| (((new_val) & BITMASK(bit_size)) << (bit_offset)); \ |
| } while (0) |
| |
| /* Is val aligned to "align" ("align" must be power of 2) */ |
| #ifndef IS_ALIGNED |
| #define IS_ALIGNED(val, align) \ |
| (((uintptr_t)(val) & ((align) - 1)) == 0) |
| #endif |
| |
| #define SWAP_ENDIAN(word) \ |
| (((word) >> 24) | (((word) & 0x00FF0000) >> 8) | \ |
| (((word) & 0x0000FF00) << 8) | (((word) & 0x000000FF) << 24)) |
| |
| #ifdef BIG__ENDIAN |
| #define SWAP_TO_LE(word) SWAP_ENDIAN(word) |
| #define SWAP_TO_BE(word) word |
| #else |
| #define SWAP_TO_LE(word) word |
| #define SWAP_TO_BE(word) SWAP_ENDIAN(word) |
| #endif |
| |
| |
| |
| /* Is val a multiple of "mult" ("mult" must be power of 2) */ |
| #define IS_MULT(val, mult) \ |
| (((val) & ((mult) - 1)) == 0) |
| |
| #define IS_NULL_ADDR(adr) \ |
| (!(adr)) |
| |
| #endif /*_CC_BITOPS_H_*/ |