46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
/*
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* Message Transfer Descriptor (MTD): Architecture-Independent Part
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*
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* Copyright (C) 2009-2011 Udo Steinberg <udo@hypervisor.org>
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* Economic rights: Technische Universitaet Dresden (Germany)
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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 "memory.hpp"
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#include "types.hpp"
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class Mtd
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{
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protected:
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uint32_t const mtd;
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explicit Mtd (uint32_t v) : mtd { v } {}
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public:
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operator auto() const { return mtd; }
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};
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class Mtd_user final : public Mtd
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{
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public:
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static constexpr auto items { PAGE_SIZE (0) / sizeof (uintptr_t) };
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auto count() const { return mtd % items + 1; }
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explicit Mtd_user (uint32_t v) : Mtd { v } {}
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};
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