core: hle: kernel: k_page_buffer: Add KPageBuffer primitive.
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// Copyright 2022 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include "common/alignment.h"
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "core/core.h"
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#include "core/device_memory.h"
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#include "core/hle/kernel/memory_types.h"
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namespace Kernel {
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class KPageBuffer final : public KSlabAllocated<KPageBuffer> {
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public:
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KPageBuffer() = default;
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static KPageBuffer* FromPhysicalAddress(Core::System& system, PAddr phys_addr) {
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ASSERT(Common::IsAligned(phys_addr, PageSize));
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return reinterpret_cast<KPageBuffer*>(system.DeviceMemory().GetPointer(phys_addr));
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}
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private:
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[[maybe_unused]] alignas(PageSize) std::array<u8, PageSize> m_buffer{};
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};
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static_assert(sizeof(KPageBuffer) == PageSize);
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static_assert(alignof(KPageBuffer) == PageSize);
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} // namespace Kernel
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