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core: hle: kernel: k_page_buffer: Add KPageBuffer primitive.

This commit is contained in:
bunnei 2022-03-11 00:18:35 -08:00
parent 4a28d8cebb
commit 08434842b3
2 changed files with 35 additions and 0 deletions

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@ -207,6 +207,7 @@ add_library(core STATIC
hle/kernel/k_memory_region.h hle/kernel/k_memory_region.h
hle/kernel/k_memory_region_type.h hle/kernel/k_memory_region_type.h
hle/kernel/k_page_bitmap.h hle/kernel/k_page_bitmap.h
hle/kernel/k_page_buffer.h
hle/kernel/k_page_heap.cpp hle/kernel/k_page_heap.cpp
hle/kernel/k_page_heap.h hle/kernel/k_page_heap.h
hle/kernel/k_page_linked_list.h hle/kernel/k_page_linked_list.h

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@ -0,0 +1,34 @@
// Copyright 2022 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include "common/alignment.h"
#include "common/assert.h"
#include "common/common_types.h"
#include "core/core.h"
#include "core/device_memory.h"
#include "core/hle/kernel/memory_types.h"
namespace Kernel {
class KPageBuffer final : public KSlabAllocated<KPageBuffer> {
public:
KPageBuffer() = default;
static KPageBuffer* FromPhysicalAddress(Core::System& system, PAddr phys_addr) {
ASSERT(Common::IsAligned(phys_addr, PageSize));
return reinterpret_cast<KPageBuffer*>(system.DeviceMemory().GetPointer(phys_addr));
}
private:
[[maybe_unused]] alignas(PageSize) std::array<u8, PageSize> m_buffer{};
};
static_assert(sizeof(KPageBuffer) == PageSize);
static_assert(alignof(KPageBuffer) == PageSize);
} // namespace Kernel