78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/*
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* Copyright (C) 2015 Southern Storm Software, Pty Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef CRYPTO_ENDIANUTIL_H
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#define CRYPTO_ENDIANUTIL_H
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#include <inttypes.h>
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#if !defined(HOST_BUILD)
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// CPU is assumed to be little endian. Edit this file if you
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// need to port this library to a big endian CPU.
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#define CRYPTO_LITTLE_ENDIAN 1
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#define htole16(x) (x)
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#define le16toh(x) (x)
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#define htobe16(x) \
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(__extension__ ({ \
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uint16_t _temp = (x); \
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((_temp >> 8) & 0x00FF) | \
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((_temp << 8) & 0xFF00); \
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}))
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#define be16toh(x) (htobe16((x)))
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#define htole32(x) (x)
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#define le32toh(x) (x)
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#define htobe32(x) \
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(__extension__ ({ \
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uint32_t _temp = (x); \
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((_temp >> 24) & 0x000000FF) | \
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((_temp >> 8) & 0x0000FF00) | \
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((_temp << 8) & 0x00FF0000) | \
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((_temp << 24) & 0xFF000000); \
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}))
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#define be32toh(x) (htobe32((x)))
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#define htole64(x) (x)
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#define le64toh(x) (x)
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#define htobe64(x) \
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(__extension__ ({ \
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uint64_t __temp = (x); \
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uint32_t __low = htobe32((uint32_t)__temp); \
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uint32_t __high = htobe32((uint32_t)(__temp >> 32)); \
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(((uint64_t)__low) << 32) | __high; \
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}))
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#define be64toh(x) (htobe64((x)))
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#else // HOST_BUILD
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#include <endian.h>
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define CRYPTO_LITTLE_ENDIAN 1
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#endif
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#endif // HOST_BUILD
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#endif
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