| /* |
| * Copyright (c) 2001-2019, Arm Limited and Contributors. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| /*! @file |
| @brief This file defines bit-field operations macros. |
| */ |
| |
| #ifndef _CC_BITOPS_H_ |
| #define _CC_BITOPS_H_ |
| |
| |
| /*! Defintion of number of 32bit maximum value. */ |
| #define CC_32BIT_MAX_VALUE (0xFFFFFFFFUL) |
| |
| /*! Definition for bitmask */ |
| #define BITMASK(mask_size) (((mask_size) < 32) ? \ |
| ((1UL << (mask_size)) - 1) : 0xFFFFFFFFUL) |
| /*! Definition for bitmask in a given offset. */ |
| #define BITMASK_AT(mask_size, mask_offset) (BITMASK(mask_size) << (mask_offset)) |
| |
| /*! Definition for getting bits value from a word. */ |
| #define BITFIELD_GET(word, bit_offset, bit_size) \ |
| (((word) >> (bit_offset)) & BITMASK(bit_size)) |
| /*! Definition for setting bits value from a word. */ |
| #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) |
| |
| /*!Definition for 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 |
| /*!Definition swap endianity for 32 bits word. */ |
| #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 |
| /*! Definition for swapping to LE. */ |
| #define SWAP_TO_LE(word) word |
| /*! Definition for swapping to BE. */ |
| #define SWAP_TO_BE(word) SWAP_ENDIAN(word) |
| #endif |
| |
| /*!Align X to uint32_t size. */ |
| #ifndef ALIGN_TO_4BYTES |
| #define ALIGN_TO_4BYTES(x) (((unsigned long)(x) + (CC_32BIT_WORD_SIZE-1)) & ~(CC_32BIT_WORD_SIZE-1)) |
| #endif |
| |
| |
| |
| /*! Definition for is val a multiple of "mult" ("mult" must be power of 2). */ |
| #define IS_MULT(val, mult) \ |
| (((val) & ((mult) - 1)) == 0) |
| |
| /*! Definition for is NULL address. */ |
| #define IS_NULL_ADDR(adr) \ |
| (!(adr)) |
| |
| #endif /*_CC_BITOPS_H_*/ |