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86b7f28d6c
These replace our platform-specific mess in favor of c++20 endian detection via std::endian and internal byteswap functions when necessary. They no longer rely on autoconf detection.
85 lines
1.8 KiB
C++
85 lines
1.8 KiB
C++
// Copyright (c) 2014-2020 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_CRYPTO_COMMON_H
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#define BITCOIN_CRYPTO_COMMON_H
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#include <compat/endian.h>
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#include <cstdint>
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#include <cstring>
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uint16_t static inline ReadLE16(const unsigned char* ptr)
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{
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uint16_t x;
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memcpy(&x, ptr, 2);
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return le16toh_internal(x);
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}
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uint32_t static inline ReadLE32(const unsigned char* ptr)
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{
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uint32_t x;
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memcpy(&x, ptr, 4);
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return le32toh_internal(x);
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}
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uint64_t static inline ReadLE64(const unsigned char* ptr)
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{
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uint64_t x;
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memcpy(&x, ptr, 8);
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return le64toh_internal(x);
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}
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void static inline WriteLE16(unsigned char* ptr, uint16_t x)
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{
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uint16_t v = htole16_internal(x);
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memcpy(ptr, &v, 2);
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}
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void static inline WriteLE32(unsigned char* ptr, uint32_t x)
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{
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uint32_t v = htole32_internal(x);
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memcpy(ptr, &v, 4);
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}
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void static inline WriteLE64(unsigned char* ptr, uint64_t x)
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{
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uint64_t v = htole64_internal(x);
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memcpy(ptr, &v, 8);
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}
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uint16_t static inline ReadBE16(const unsigned char* ptr)
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{
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uint16_t x;
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memcpy(&x, ptr, 2);
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return be16toh_internal(x);
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}
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uint32_t static inline ReadBE32(const unsigned char* ptr)
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{
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uint32_t x;
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memcpy(&x, ptr, 4);
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return be32toh_internal(x);
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}
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uint64_t static inline ReadBE64(const unsigned char* ptr)
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{
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uint64_t x;
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memcpy(&x, ptr, 8);
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return be64toh_internal(x);
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}
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void static inline WriteBE32(unsigned char* ptr, uint32_t x)
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{
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uint32_t v = htobe32_internal(x);
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memcpy(ptr, &v, 4);
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}
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void static inline WriteBE64(unsigned char* ptr, uint64_t x)
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{
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uint64_t v = htobe64_internal(x);
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memcpy(ptr, &v, 8);
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}
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#endif // BITCOIN_CRYPTO_COMMON_H
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