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https://github.com/guanzhi/GmSSL.git
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85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/*
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* Copyright 2014-2021 The GmSSL Project Authors. All Rights Reserved.
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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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#ifndef GMSSL_ENDIAN_H
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#define GMSSL_ENDIAN_H
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/* Big Endian R/W */
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#define GETU16(p) \
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((uint16_t)(p)[0] << 8 | \
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(uint16_t)(p)[1])
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#define GETU32(p) \
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((uint32_t)(p)[0] << 24 | \
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(uint32_t)(p)[1] << 16 | \
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(uint32_t)(p)[2] << 8 | \
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(uint32_t)(p)[3])
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#define GETU64(p) \
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((uint64_t)(p)[0] << 56 | \
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(uint64_t)(p)[1] << 48 | \
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(uint64_t)(p)[2] << 40 | \
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(uint64_t)(p)[3] << 32 | \
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(uint64_t)(p)[4] << 24 | \
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(uint64_t)(p)[5] << 16 | \
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(uint64_t)(p)[6] << 8 | \
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(uint64_t)(p)[7])
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// 注意：PUTU32(buf, val++) 会出错！
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#define PUTU16(p,V) \
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((p)[0] = (uint8_t)((V) >> 8), \
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(p)[1] = (uint8_t)(V))
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#define PUTU32(p,V) \
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((p)[0] = (uint8_t)((V) >> 24), \
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(p)[1] = (uint8_t)((V) >> 16), \
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(p)[2] = (uint8_t)((V) >> 8), \
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(p)[3] = (uint8_t)(V))
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#define PUTU64(p,V) \
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((p)[0] = (uint8_t)((V) >> 56), \
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(p)[1] = (uint8_t)((V) >> 48), \
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(p)[2] = (uint8_t)((V) >> 40), \
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(p)[3] = (uint8_t)((V) >> 32), \
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(p)[4] = (uint8_t)((V) >> 24), \
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(p)[5] = (uint8_t)((V) >> 16), \
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(p)[6] = (uint8_t)((V) >> 8), \
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(p)[7] = (uint8_t)(V))
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/* Little Endian R/W */
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#define GETU16_LE(p) (*(const uint16_t *)(p))
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#define GETU32_LE(p) (*(const uint32_t *)(p))
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#define GETU64_LE(p) (*(const uint64_t *)(p))
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#define PUTU16_LE(p,V) *(uint16_t *)(p) = (V)
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#define PUTU32_LE(p,V) *(uint32_t *)(p) = (V)
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#define PUTU64_LE(p,V) *(uint64_t *)(p) = (V)
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/* Rotate */
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#define ROL32(a,n) (((a)<<(n))|(((a)&0xffffffff)>>(32-(n))))
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#define ROL64(a,n) (((a)<<(n))|((a)>>(64-(n))))
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#define ROR32(a,n) ROL32((a),32-(n))
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#define ROR64(a,n) ROL64(a,64-n)
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#endif
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