51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
/*
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* Signature Functions
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*
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* Copyright (C) 2019-2025 Udo Steinberg, BlueRock Security, Inc.
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*
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* This file is part of the NOVA microhypervisor.
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*
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* NOVA is free software: you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* NOVA is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License version 2 for more details.
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*/
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#pragma once
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#include "types.hpp"
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class Signature
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{
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public:
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/*
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* Convert 4-character ASCII string to uint32_t (little-endian)
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*
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* @param s String of length >= 4
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* @return uint32_t representation of the string
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*/
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static constexpr auto u32 (char const *s)
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{
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return static_cast<uint32_t>(s[3]) << 24 | static_cast<uint32_t>(s[2]) << 16 |
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static_cast<uint32_t>(s[1]) << 8 | static_cast<uint32_t>(s[0]);
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}
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/*
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* Convert 8-character ASCII string to uint64_t (little-endian)
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*
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* @param s String of length >= 8
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* @return uint64_t representation of the string
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*/
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static constexpr auto u64 (char const *s)
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{
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return static_cast<uint64_t>(s[7]) << 56 | static_cast<uint64_t>(s[6]) << 48 |
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static_cast<uint64_t>(s[5]) << 40 | static_cast<uint64_t>(s[4]) << 32 |
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static_cast<uint64_t>(s[3]) << 24 | static_cast<uint64_t>(s[2]) << 16 |
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static_cast<uint64_t>(s[1]) << 8 | static_cast<uint64_t>(s[0]);
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}
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};
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