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/*
* 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_*/
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