10 files changed, 72 insertions, 95 deletions
diff --git a/ARMeilleure/Instructions/InstEmitSystem.cs b/ARMeilleure/Instructions/InstEmitSystem.cs
index 499f1648..50dab07d 100644
--- a/ARMeilleure/Instructions/InstEmitSystem.cs
+++ b/ARMeilleure/Instructions/InstEmitSystem.cs
@@ -33,13 +33,13 @@ namespace ARMeilleure.Instructions
 
             switch (GetPackedId(op))
             {
-                case 0b11_011_0000_0000_001: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetCtrEl0));    break;
-                case 0b11_011_0000_0000_111: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetDczidEl0));  break;
-                case 0b11_011_0100_0010_000: EmitGetNzcv(context);                                                           return;
-                case 0b11_011_0100_0100_000: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetFpcr));      break;
-                case 0b11_011_0100_0100_001: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetFpsr));      break;
-                case 0b11_011_1101_0000_010: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetTpidrEl0));  break;
-                case 0b11_011_1101_0000_011: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetTpidr));     break;
+                case 0b11_011_0000_0000_001: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetCtrEl0)); break;
+                case 0b11_011_0000_0000_111: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetDczidEl0)); break;
+                case 0b11_011_0100_0010_000: EmitGetNzcv(context); return;
+                case 0b11_011_0100_0100_000: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetFpcr)); break;
+                case 0b11_011_0100_0100_001: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetFpsr)); break;
+                case 0b11_011_1101_0000_010: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetTpidrEl0)); break;
+                case 0b11_011_1101_0000_011: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetTpidrroEl0)); break;
                 case 0b11_011_1110_0000_000: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetCntfrqEl0)); break;
                 case 0b11_011_1110_0000_001: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetCntpctEl0)); break;
                 case 0b11_011_1110_0000_010: info = typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetCntvctEl0)); break;
diff --git a/ARMeilleure/Instructions/NativeInterface.cs b/ARMeilleure/Instructions/NativeInterface.cs
index 0b76f681..eebb824e 100644
--- a/ARMeilleure/Instructions/NativeInterface.cs
+++ b/ARMeilleure/Instructions/NativeInterface.cs
@@ -107,14 +107,14 @@ namespace ARMeilleure.Instructions
             return (uint)GetContext().TpidrEl0;
         }
 
-        public static ulong GetTpidr()
+        public static ulong GetTpidrroEl0()
         {
-            return (ulong)GetContext().Tpidr;
+            return (ulong)GetContext().TpidrroEl0;
         }
 
         public static uint GetTpidr32()
         {
-            return (uint)GetContext().Tpidr;
+            return (uint)GetContext().TpidrroEl0;
         }
 
         public static ulong GetCntfrqEl0()
diff --git a/ARMeilleure/State/ExceptionCallback.cs b/ARMeilleure/State/ExceptionCallback.cs
new file mode 100644
index 00000000..38d6eef7
--- /dev/null
+++ b/ARMeilleure/State/ExceptionCallback.cs
@@ -0,0 +1,5 @@
+namespace ARMeilleure.State
+{
+    public delegate void ExceptionCallbackNoArgs(ExecutionContext context);
+    public delegate void ExceptionCallback(ExecutionContext context, ulong address, int id);
+}
+\ No newline at end of file
diff --git a/ARMeilleure/State/ExecutionContext.cs b/ARMeilleure/State/ExecutionContext.cs
index 8309864f..c73ca197 100644
--- a/ARMeilleure/State/ExecutionContext.cs
+++ b/ARMeilleure/State/ExecutionContext.cs
@@ -1,6 +1,5 @@
 using ARMeilleure.Memory;
 using System;
-using System.Diagnostics;
 
 namespace ARMeilleure.State
 {
@@ -14,34 +13,22 @@ namespace ARMeilleure.State
 
         private bool _interrupted;
 
-        private static Stopwatch _tickCounter;
+        private readonly ICounter _counter;
 
-        private static double _hostTickFreq;
+        public ulong Pc => _nativeContext.GetPc();
 
-        public uint CtrEl0   => 0x8444c004;
+        public uint CtrEl0 => 0x8444c004;
         public uint DczidEl0 => 0x00000004;
 
-        public ulong CntfrqEl0 { get; set; }
-        public ulong CntpctEl0
-        {
-            get
-            {
-                double ticks = _tickCounter.ElapsedTicks * _hostTickFreq;
-
-                return (ulong)(ticks * CntfrqEl0);
-            }
-        }
+        public ulong CntfrqEl0 => _counter.Frequency;
+        public ulong CntpctEl0 => _counter.Counter;
 
         // CNTVCT_EL0 = CNTPCT_EL0 - CNTVOFF_EL2
         // Since EL2 isn't implemented, CNTVOFF_EL2 = 0
         public ulong CntvctEl0 => CntpctEl0;
 
-        public static TimeSpan ElapsedTime => _tickCounter.Elapsed;
-        public static long ElapsedTicks => _tickCounter.ElapsedTicks;
-        public static double TickFrequency => _hostTickFreq;
-
         public long TpidrEl0 { get; set; }
-        public long Tpidr    { get; set; }
+        public long TpidrroEl0 { get; set; }
 
         public uint Pstate
         {
@@ -78,35 +65,38 @@ namespace ARMeilleure.State
             private set => _nativeContext.SetRunning(value);
         }
 
-        public event EventHandler<EventArgs>              Interrupt;
-        public event EventHandler<InstExceptionEventArgs> Break;
-        public event EventHandler<InstExceptionEventArgs> SupervisorCall;
-        public event EventHandler<InstUndefinedEventArgs> Undefined;
-
-        static ExecutionContext()
-        {
-            _hostTickFreq = 1.0 / Stopwatch.Frequency;
-
-            _tickCounter = new Stopwatch();
-            _tickCounter.Start();
-        }
-
-        public ExecutionContext(IJitMemoryAllocator allocator)
+        private readonly ExceptionCallbackNoArgs _interruptCallback;
+        private readonly ExceptionCallback _breakCallback;
+        private readonly ExceptionCallback _supervisorCallback;
+        private readonly ExceptionCallback _undefinedCallback;
+
+        public ExecutionContext(
+            IJitMemoryAllocator allocator,
+            ICounter counter,
+            ExceptionCallbackNoArgs interruptCallback = null,
+            ExceptionCallback breakCallback = null,
+            ExceptionCallback supervisorCallback = null,
+            ExceptionCallback undefinedCallback = null)
         {
             _nativeContext = new NativeContext(allocator);
+            _counter = counter;
+            _interruptCallback = interruptCallback;
+            _breakCallback = breakCallback;
+            _supervisorCallback = supervisorCallback;
+            _undefinedCallback = undefinedCallback;
 
             Running = true;
 
             _nativeContext.SetCounter(MinCountForCheck);
         }
 
-        public ulong GetX(int index)              => _nativeContext.GetX(index);
-        public void  SetX(int index, ulong value) => _nativeContext.SetX(index, value);
+        public ulong GetX(int index) => _nativeContext.GetX(index);
+        public void SetX(int index, ulong value) => _nativeContext.SetX(index, value);
 
-        public V128 GetV(int index)             => _nativeContext.GetV(index);
+        public V128 GetV(int index) => _nativeContext.GetV(index);
         public void SetV(int index, V128 value) => _nativeContext.SetV(index, value);
 
-        public bool GetPstateFlag(PState flag)             => _nativeContext.GetPstateFlag(flag);
+        public bool GetPstateFlag(PState flag) => _nativeContext.GetPstateFlag(flag);
         public void SetPstateFlag(PState flag, bool value) => _nativeContext.SetPstateFlag(flag, value);
 
         public bool GetFPstateFlag(FPState flag) => _nativeContext.GetFPStateFlag(flag);
@@ -118,7 +108,7 @@ namespace ARMeilleure.State
             {
                 _interrupted = false;
 
-                Interrupt?.Invoke(this, EventArgs.Empty);
+                _interruptCallback?.Invoke(this);
             }
 
             _nativeContext.SetCounter(MinCountForCheck);
@@ -131,17 +121,17 @@ namespace ARMeilleure.State
 
         internal void OnBreak(ulong address, int imm)
         {
-            Break?.Invoke(this, new InstExceptionEventArgs(address, imm));
+            _breakCallback?.Invoke(this, address, imm);
         }
 
         internal void OnSupervisorCall(ulong address, int imm)
         {
-            SupervisorCall?.Invoke(this, new InstExceptionEventArgs(address, imm));
+            _supervisorCallback?.Invoke(this, address, imm);
         }
 
         internal void OnUndefined(ulong address, int opCode)
         {
-            Undefined?.Invoke(this, new InstUndefinedEventArgs(address, opCode));
+            _undefinedCallback?.Invoke(this, address, opCode);
         }
 
         public void StopRunning()
@@ -151,16 +141,6 @@ namespace ARMeilleure.State
             _nativeContext.SetCounter(0);
         }
 
-        public static void SuspendCounter()
-        {
-            _tickCounter.Stop();
-        }
-
-        public static void ResumeCounter()
-        {
-            _tickCounter.Start();
-        }
-
         public void Dispose()
         {
             _nativeContext.Dispose();
diff --git a/ARMeilleure/State/ICounter.cs b/ARMeilleure/State/ICounter.cs
new file mode 100644
index 00000000..93e721ea
--- /dev/null
+++ b/ARMeilleure/State/ICounter.cs
@@ -0,0 +1,18 @@
+namespace ARMeilleure.State
+{
+    /// <summary>
+    /// CPU Counter interface.
+    /// </summary>
+    public interface ICounter
+    {
+        /// <summary>
+        /// Counter frequency in Hertz.
+        /// </summary>
+        ulong Frequency { get; }
+
+        /// <summary>
+        /// Current counter value.
+        /// </summary>
+        ulong Counter { get; }
+    }
+}
+\ No newline at end of file
diff --git a/ARMeilleure/State/InstExceptionEventArgs.cs b/ARMeilleure/State/InstExceptionEventArgs.cs
deleted file mode 100644
index c2460e4b..00000000
--- a/ARMeilleure/State/InstExceptionEventArgs.cs
+++ /dev/null
@@ -1,16 +0,0 @@
-using System;
-
-namespace ARMeilleure.State
-{
-    public class InstExceptionEventArgs : EventArgs
-    {
-        public ulong Address { get; }
-        public int   Id      { get; }
-
-        public InstExceptionEventArgs(ulong address, int id)
-        {
-            Address = address;
-            Id      = id;
-        }
-    }
-}
-\ No newline at end of file
diff --git a/ARMeilleure/State/InstUndefinedEventArgs.cs b/ARMeilleure/State/InstUndefinedEventArgs.cs
deleted file mode 100644
index c02b648e..00000000
--- a/ARMeilleure/State/InstUndefinedEventArgs.cs
+++ /dev/null
@@ -1,16 +0,0 @@
-using System;
-
-namespace ARMeilleure.State
-{
-    public class InstUndefinedEventArgs : EventArgs
-    {
-        public ulong Address { get; }
-        public int   OpCode  { get; }
-
-        public InstUndefinedEventArgs(ulong address, int opCode)
-        {
-            Address = address;
-            OpCode  = opCode;
-        }
-    }
-}
-\ No newline at end of file
diff --git a/ARMeilleure/State/NativeContext.cs b/ARMeilleure/State/NativeContext.cs
index f911f762..11ab5ca3 100644
--- a/ARMeilleure/State/NativeContext.cs
+++ b/ARMeilleure/State/NativeContext.cs
@@ -34,6 +34,12 @@ namespace ARMeilleure.State
             GetStorage().ExclusiveAddress = ulong.MaxValue;
         }
 
+        public ulong GetPc()
+        {
+            // TODO: More precise tracking of PC value.
+            return GetStorage().DispatchAddress;
+        }
+
         public unsafe ulong GetX(int index)
         {
             if ((uint)index >= RegisterConsts.IntRegsCount)
diff --git a/ARMeilleure/Translation/Delegates.cs b/ARMeilleure/Translation/Delegates.cs
index 3cfe34b6..6d40dc96 100644
--- a/ARMeilleure/Translation/Delegates.cs
+++ b/ARMeilleure/Translation/Delegates.cs
@@ -115,7 +115,7 @@ namespace ARMeilleure.Translation
             SetDelegateInfo(typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetFpsr)));
             SetDelegateInfo(typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetFunctionAddress)));
             SetDelegateInfo(typeof(NativeInterface).GetMethod(nameof(NativeInterface.InvalidateCacheLine)));
-            SetDelegateInfo(typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetTpidr)));
+            SetDelegateInfo(typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetTpidrroEl0)));
             SetDelegateInfo(typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetTpidr32))); // A32 only.
             SetDelegateInfo(typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetTpidrEl0)));
             SetDelegateInfo(typeof(NativeInterface).GetMethod(nameof(NativeInterface.GetTpidrEl032))); // A32 only.
diff --git a/ARMeilleure/Translation/PTC/Ptc.cs b/ARMeilleure/Translation/PTC/Ptc.cs
index 43f3b08b..9671a871 100644
--- a/ARMeilleure/Translation/PTC/Ptc.cs
+++ b/ARMeilleure/Translation/PTC/Ptc.cs
@@ -27,7 +27,7 @@ namespace ARMeilleure.Translation.PTC
         private const string OuterHeaderMagicString = "PTCohd\0\0";
         private const string InnerHeaderMagicString = "PTCihd\0\0";
 
-        private const uint InternalVersion = 3267; //! To be incremented manually for each change to the ARMeilleure project.
+        private const uint InternalVersion = 3362; //! To be incremented manually for each change to the ARMeilleure project.
 
         private const string ActualDir = "0";
         private const string BackupDir = "1";