38 lines
1.1 KiB
C
38 lines
1.1 KiB
C
/* Copyright 2018 Canaan Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <io.h>
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uint32_t get_bit_mask(volatile uint32_t* bits, uint32_t mask)
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{
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return (*bits) & mask;
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}
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void set_bit_mask(volatile uint32_t* bits, uint32_t mask, uint32_t value)
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{
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uint32_t org = (*bits) & ~mask;
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*bits = org | (value & mask);
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}
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uint32_t get_bit_idx(volatile uint32_t* bits, size_t idx)
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{
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return ((*bits) & (1 << idx)) >> idx;
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}
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void set_bit_idx(volatile uint32_t* bits, size_t idx, uint32_t value)
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{
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uint32_t org = (*bits) & ~(1 << idx);
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*bits = org | (value << idx);
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}
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