rt-thread-official/libcpu/risc-v/common64/riscv.h

/*
 * Copyright (c) 2006-2024, RT-Thread Development Team
 *
 * SPDX-License-Identifier: Apache-2.0
 *
 * Change Logs:
 * Date           Author       Notes
 * 2021-01-30     lizhirui     first version
 * 2024-08-28     RT-Thread    Fit into rv64ilp32 ABI
 */

#ifndef __RISCV_H__
#define __RISCV_H__

#include <encoding.h>

/* using unsigned long long for the case of rv64ilp32 */
#define __SIZE(bit) (1ULL << (bit))
#define __MASK(bit) (__SIZE(bit) - 1ULL)

#define __UMASK(bit) (~(__MASK(bit)))
#define __MASKVALUE(value,maskvalue) ((value) & (maskvalue))
#define __UMASKVALUE(value,maskvalue) ((value) & (~(maskvalue)))
#define __CHECKUPBOUND(value,bit_count) (!(((rt_ubase_t)value) & (~__MASK(bit_count))))
#define __CHECKALIGN(value,start_bit) (!(((rt_ubase_t)value) & (__MASK(start_bit))))

#define __PARTBIT(value,start_bit,length) (((value) >> (start_bit)) & __MASK(length))

#define __ALIGNUP(value,bit) (((value) + __MASK(bit)) & __UMASK(bit))
#define __ALIGNDOWN(value,bit) ((value) & __UMASK(bit))

#endif