1 files changed, 153 insertions, 0 deletions
diff --git a/src/Ryujinx.Cpu/LightningJit/State/ExecutionContext.cs b/src/Ryujinx.Cpu/LightningJit/State/ExecutionContext.cs
new file mode 100644
index 00000000..facb9142
--- /dev/null
+++ b/src/Ryujinx.Cpu/LightningJit/State/ExecutionContext.cs
@@ -0,0 +1,153 @@
+using ARMeilleure.Memory;
+using ARMeilleure.State;
+using System;
+
+namespace Ryujinx.Cpu.LightningJit.State
+{
+    public class ExecutionContext : IExecutionContext
+    {
+        private const int MinCountForCheck = 4000;
+
+        private readonly NativeContext _nativeContext;
+
+        internal IntPtr NativeContextPtr => _nativeContext.BasePtr;
+
+        private bool _interrupted;
+        private readonly ICounter _counter;
+
+        public ulong Pc => _nativeContext.GetPc();
+
+        public ulong CntfrqEl0 => _counter.Frequency;
+        public ulong CntpctEl0 => _counter.Counter;
+
+        public long TpidrEl0
+        {
+            get => _nativeContext.GetTpidrEl0();
+            set => _nativeContext.SetTpidrEl0(value);
+        }
+
+        public long TpidrroEl0
+        {
+            get => _nativeContext.GetTpidrroEl0();
+            set => _nativeContext.SetTpidrroEl0(value);
+        }
+
+        public uint Pstate
+        {
+            get => _nativeContext.GetPstate();
+            set => _nativeContext.SetPstate(value);
+        }
+
+        public uint Fpsr
+        {
+            get => _nativeContext.GetFPState((uint)FPSR.Mask);
+            set => _nativeContext.SetFPState(value, (uint)FPSR.Mask);
+        }
+
+        public uint Fpcr
+        {
+            get => _nativeContext.GetFPState((uint)FPCR.Mask);
+            set => _nativeContext.SetFPState(value, (uint)FPCR.Mask);
+        }
+
+        public bool IsAarch32 { get; set; }
+
+        internal ExecutionMode ExecutionMode
+        {
+            get
+            {
+                if (IsAarch32)
+                {
+                    return (Pstate & (1u << 5)) != 0
+                        ? ExecutionMode.Aarch32Thumb
+                        : ExecutionMode.Aarch32Arm;
+                }
+                else
+                {
+                    return ExecutionMode.Aarch64;
+                }
+            }
+        }
+
+        public bool Running
+        {
+            get => _nativeContext.GetRunning();
+            private set => _nativeContext.SetRunning(value);
+        }
+
+        private readonly ExceptionCallbackNoArgs _interruptCallback;
+        private readonly ExceptionCallback _breakCallback;
+        private readonly ExceptionCallback _supervisorCallback;
+        private readonly ExceptionCallback _undefinedCallback;
+
+        public ExecutionContext(IJitMemoryAllocator allocator, ICounter counter, ExceptionCallbacks exceptionCallbacks)
+        {
+            _nativeContext = new NativeContext(allocator);
+            _counter = counter;
+            _interruptCallback = exceptionCallbacks.InterruptCallback;
+            _breakCallback = exceptionCallbacks.BreakCallback;
+            _supervisorCallback = exceptionCallbacks.SupervisorCallback;
+            _undefinedCallback = exceptionCallbacks.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 V128 GetV(int index) => _nativeContext.GetV(index);
+        public void SetV(int index, V128 value) => _nativeContext.SetV(index, value);
+
+        internal void CheckInterrupt()
+        {
+            if (_interrupted)
+            {
+                _interrupted = false;
+
+                _interruptCallback?.Invoke(this);
+            }
+
+            _nativeContext.SetCounter(MinCountForCheck);
+        }
+
+        public void RequestInterrupt()
+        {
+            _interrupted = true;
+        }
+
+        internal void OnBreak(ulong address, int imm)
+        {
+            _breakCallback?.Invoke(this, address, imm);
+        }
+
+        internal void OnSupervisorCall(ulong address, int imm)
+        {
+            _supervisorCallback?.Invoke(this, address, imm);
+        }
+
+        internal void OnUndefined(ulong address, int opCode)
+        {
+            _undefinedCallback?.Invoke(this, address, opCode);
+        }
+
+        public void StopRunning()
+        {
+            Running = false;
+
+            _nativeContext.SetCounter(0);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            _nativeContext.Dispose();
+        }
+
+        public void Dispose()
+        {
+            Dispose(disposing: true);
+            GC.SuppressFinalize(this);
+        }
+    }
+}