From 67c0d714c5b6e93ddb00d0807147b5673c011ac6 Mon Sep 17 00:00:00 2001
From: Liam <byteslice@airmail.cc>
Date: Sun, 18 Dec 2022 16:37:19 -0500
Subject: kernel: add KHardwareTimer

---
 src/core/hle/kernel/k_hardware_timer.h | 50 ++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 src/core/hle/kernel/k_hardware_timer.h

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

diff --git a/src/core/hle/kernel/k_hardware_timer.h b/src/core/hle/kernel/k_hardware_timer.h
new file mode 100644
index 000000000..2c88876b3
--- /dev/null
+++ b/src/core/hle/kernel/k_hardware_timer.h
@@ -0,0 +1,50 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "core/hle/kernel/k_hardware_timer_base.h"
+
+namespace Core::Timing {
+struct EventType;
+} // namespace Core::Timing
+
+namespace Kernel {
+
+class KHardwareTimer : /* public KInterruptTask, */ public KHardwareTimerBase {
+public:
+    explicit KHardwareTimer(KernelCore& kernel) : KHardwareTimerBase{kernel} {}
+
+    // Public API.
+    void Initialize();
+    void Finalize();
+
+    s64 GetCount() {
+        return GetTick();
+    }
+
+    void RegisterAbsoluteTask(KTimerTask* task, s64 task_time) {
+        KScopedDisableDispatch dd{m_kernel};
+        KScopedSpinLock lk{this->GetLock()};
+
+        if (this->RegisterAbsoluteTaskImpl(task, task_time)) {
+            if (task_time <= m_wakeup_time) {
+                this->EnableInterrupt(task_time);
+            }
+        }
+    }
+
+private:
+    void EnableInterrupt(s64 wakeup_time);
+    void DisableInterrupt();
+    bool GetInterruptEnabled();
+    s64 GetTick();
+    void DoTask();
+
+private:
+    // Absolute time in nanoseconds
+    s64 m_wakeup_time{std::numeric_limits<s64>::max()};
+    std::shared_ptr<Core::Timing::EventType> m_event_type{};
+};
+
+} // namespace Kernel
-- 
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