From 08434842b3ea935e4a3b492c18140aff2de2e7ae Mon Sep 17 00:00:00 2001
From: bunnei <bunneidev@gmail.com>
Date: Fri, 11 Mar 2022 00:18:35 -0800
Subject: core: hle: kernel: k_page_buffer: Add KPageBuffer primitive.

---
 src/core/hle/kernel/k_page_buffer.h | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 src/core/hle/kernel/k_page_buffer.h

(limited to 'src/core/hle/kernel/k_page_buffer.h')

diff --git a/src/core/hle/kernel/k_page_buffer.h b/src/core/hle/kernel/k_page_buffer.h
new file mode 100644
index 000000000..0a9451228
--- /dev/null
+++ b/src/core/hle/kernel/k_page_buffer.h
@@ -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
-- 
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