1 files changed, 70 insertions, 0 deletions
diff --git a/src/core/hle/service/psc/time/shared_memory.h b/src/core/hle/service/psc/time/shared_memory.h
new file mode 100644
index 000000000..f9bf97d5c
--- /dev/null
+++ b/src/core/hle/service/psc/time/shared_memory.h
@@ -0,0 +1,70 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+
+#include "common/common_types.h"
+#include "core/hle/service/psc/time/common.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class KSharedMemory;
+}
+
+namespace Service::PSC::Time {
+
+template <typename T>
+struct LockFreeAtomicType {
+    u32 m_counter;
+    std::array<T, 2> m_value;
+};
+
+struct SharedMemoryStruct {
+    LockFreeAtomicType<SteadyClockTimePoint> steady_time_points;
+    LockFreeAtomicType<SystemClockContext> local_system_clock_contexts;
+    LockFreeAtomicType<SystemClockContext> network_system_clock_contexts;
+    LockFreeAtomicType<bool> automatic_corrections;
+    LockFreeAtomicType<ContinuousAdjustmentTimePoint> continuous_adjustment_time_points;
+    std::array<char, 0xEB8> pad0148;
+};
+static_assert(offsetof(SharedMemoryStruct, steady_time_points) == 0x0,
+              "steady_time_points are in the wrong place!");
+static_assert(offsetof(SharedMemoryStruct, local_system_clock_contexts) == 0x38,
+              "local_system_clock_contexts are in the wrong place!");
+static_assert(offsetof(SharedMemoryStruct, network_system_clock_contexts) == 0x80,
+              "network_system_clock_contexts are in the wrong place!");
+static_assert(offsetof(SharedMemoryStruct, automatic_corrections) == 0xC8,
+              "automatic_corrections are in the wrong place!");
+static_assert(offsetof(SharedMemoryStruct, continuous_adjustment_time_points) == 0xD0,
+              "continuous_adjustment_time_points are in the wrong place!");
+static_assert(sizeof(SharedMemoryStruct) == 0x1000,
+              "Time's SharedMemoryStruct has the wrong size!");
+static_assert(std::is_trivial_v<SharedMemoryStruct>);
+
+class SharedMemory {
+public:
+    explicit SharedMemory(Core::System& system);
+
+    Kernel::KSharedMemory& GetKSharedMemory() {
+        return m_k_shared_memory;
+    }
+
+    void SetLocalSystemContext(SystemClockContext& context);
+    void SetNetworkSystemContext(SystemClockContext& context);
+    void SetSteadyClockTimePoint(ClockSourceId clock_source_id, s64 time_diff);
+    void SetContinuousAdjustment(ContinuousAdjustmentTimePoint& time_point);
+    void SetAutomaticCorrection(bool automatic_correction);
+    void UpdateBaseTime(s64 time);
+
+private:
+    Core::System& m_system;
+    Kernel::KSharedMemory& m_k_shared_memory;
+    SharedMemoryStruct* m_shared_memory_ptr;
+};
+
+} // namespace Service::PSC::Time