Hook up KTimer to scheduler

include/cpu_dynarmic.hpp

@@ -126,7 +126,7 @@ class CPU {
 	Emulator& emu;
 
   public:
-    static constexpr u64 ticksPerSec = 268111856;
+    static constexpr u64 ticksPerSec = Scheduler::arm11Clock;
 
     CPU(Memory& mem, Kernel& kernel, Emulator& emu);
     void reset();
@@ -175,6 +175,10 @@ class CPU {
         return scheduler.currentTimestamp;
     }
 
+	Scheduler& getScheduler() {
+		return scheduler;
+	}
+
     void clearCache() { jit->ClearCache(); }
     void runFrame();
 };

include/kernel/kernel.hpp

@@ -70,6 +70,7 @@ public:
 	Handle makeMutex(bool locked = false); // Needs to be public to be accessible to the APT/DSP services
 	Handle makeSemaphore(u32 initialCount, u32 maximumCount); // Needs to be public to be accessible to the service manager port
 	Handle makeTimer(ResetType resetType);
+	void pollTimers();
 
 	// Signals an event, returns true on success or false if the event does not exist
 	bool signalEvent(Handle e);
@@ -94,7 +95,6 @@ public:
 	void releaseMutex(Mutex* moo);
 	void cancelTimer(Timer* timer);
 	void signalTimer(Handle timerHandle, Timer* timer);
-	void updateTimer(Handle timerHandle, Timer* timer);
 
 	// Wake up the thread with the highest priority out of all threads in the waitlist
 	// Returns the index of the woken up thread

include/kernel/kernel_types.hpp

@@ -177,13 +177,12 @@ struct Timer {
 	u64 waitlist;  // Refer to the getWaitlist function below for documentation
 	ResetType resetType = ResetType::OneShot;
 
-	u64 startTick;     // CPU tick the timer started
-	u64 currentDelay;  // Number of ns until the timer fires next time
+	u64 fireTick;      // CPU tick the timer will be fired
 	u64 interval;      // Number of ns until the timer fires for the second and future times
 	bool fired;        // Has this timer been signalled?
 	bool running;      // Is this timer running or stopped?
 
-	Timer(ResetType type) : resetType(type), startTick(0), currentDelay(0), interval(0), waitlist(0), fired(false), running(false) {}
+	Timer(ResetType type) : resetType(type), fireTick(0), interval(0), waitlist(0), fired(false), running(false) {}
 };
 
 struct MemoryBlock {

include/scheduler.hpp

@@ -5,14 +5,17 @@
 #include <ranges>
 
 #include "helpers.hpp"
+#include "logger.hpp"
 
 struct Scheduler {
 	enum class EventType {
 		VBlank = 0,          // End of frame event
-		Panic = 1,           // Dummy event that is always pending and should never be triggered (Timestamp = UINT64_MAX)
+		UpdateTimers = 1,    // Update kernel timer objects
+		Panic = 2,           // Dummy event that is always pending and should never be triggered (Timestamp = UINT64_MAX)
 		TotalNumberOfEvents  // How many event types do we have in total?
 	};
 	static constexpr usize totalNumberOfEvents = static_cast<usize>(EventType::TotalNumberOfEvents);
+	static constexpr u64 arm11Clock = 268111856;
 
 	template <typename Key, typename Val, usize size>
 	using EventMap = boost::container::flat_multimap<Key, Val, std::less<Key>, boost::container::static_vector<std::pair<Key, Val>, size>>;
@@ -46,4 +49,37 @@ struct Scheduler {
 		// Add a dummy event to always keep the scheduler non-empty
 		addEvent(EventType::Panic, std::numeric_limits<u64>::max());
 	}
+
+  private:
+	static constexpr u64 MAX_VALUE_TO_MULTIPLY = std::numeric_limits<s64>::max() / arm11Clock;
+
+  public:
+	// Function for converting time units to cycles for various kernel functions
+	// Thank you Citra
+	static constexpr s64 nsToCycles(float ns) { return s64(arm11Clock * (0.000000001f) * ns); }
+	static constexpr s64 nsToCycles(int ns) { return arm11Clock * s64(ns) / 1000000000; }
+
+	static constexpr s64 nsToCycles(s64 ns) {
+		if (ns / 1000000000 > static_cast<s64>(MAX_VALUE_TO_MULTIPLY)) {
+			return std::numeric_limits<s64>::max();
+		}
+
+		if (ns > static_cast<s64>(MAX_VALUE_TO_MULTIPLY)) {
+			return arm11Clock * (ns / 1000000000);
+		}
+
+		return (arm11Clock * ns) / 1000000000;
+	}
+
+	static constexpr s64 nsToCycles(u64 ns) {
+		if (ns / 1000000000 > MAX_VALUE_TO_MULTIPLY) {
+			return std::numeric_limits<s64>::max();
+		}
+
+		if (ns > MAX_VALUE_TO_MULTIPLY) {
+			return arm11Clock * (s64(ns) / 1000000000);
+		}
+
+		return (arm11Clock * s64(ns)) / 1000000000;
+	}
 };