ARMeilleure: Move TPIDR_EL0 and TPIDRRO_EL0 to NativeContext (#4661)

* ARMeilleure: Move TPIDR_EL0 and TPIDRRO_EL0 to NativeContext

Some games access these system registers several tens of thousands of times in a second from many different threads. While this isn't really crippling, it is a lot of wasted time spent in a reverse pinvoke transition.

Example games are Pokemon Scarlet/Violet and BOTW. These games have a lot of different potential bottlenecks so it's unlikely you will see a consistent improvement, but it definitely disappears from the cpu profile.

* Remove unreachable code.

* Add ulong conversion for offsets

* Nit

2 files changed, 29 insertions, 2 deletions

diff --git a/ARMeilleure/State/ExecutionContext.cs b/ARMeilleure/State/ExecutionContext.cs
index 5d18e6ed..859fb3a5 100644
--- a/ARMeilleure/State/ExecutionContext.cs
+++ b/ARMeilleure/State/ExecutionContext.cs
@@ -27,8 +27,17 @@ namespace ARMeilleure.State
         // Since EL2 isn't implemented, CNTVOFF_EL2 = 0
         public ulong CntvctEl0 => CntpctEl0;
 
-        public long TpidrEl0 { get; set; }
-        public long TpidrroEl0 { get; set; }
+        public long TpidrEl0
+        {
+            get => _nativeContext.GetTpidrEl0();
+            set => _nativeContext.SetTpidrEl0(value);
+        }
+
+        public long TpidrroEl0
+        {
+            get => _nativeContext.GetTpidrroEl0();
+            set => _nativeContext.SetTpidrroEl0(value);
+        }
 
         public uint Pstate
         {
diff --git a/ARMeilleure/State/NativeContext.cs b/ARMeilleure/State/NativeContext.cs
index 89e875d1..3189bdd8 100644
--- a/ARMeilleure/State/NativeContext.cs
+++ b/ARMeilleure/State/NativeContext.cs
@@ -13,6 +13,8 @@ namespace ARMeilleure.State
             public fixed ulong V[RegisterConsts.VecRegsCount * 2];
             public fixed uint Flags[RegisterConsts.FlagsCount];
             public fixed uint FpFlags[RegisterConsts.FpFlagsCount];
+            public long TpidrEl0;
+            public long TpidrroEl0;
             public int Counter;
             public ulong DispatchAddress;
             public ulong ExclusiveAddress;
@@ -168,6 +170,12 @@ namespace ARMeilleure.State
             }
         }
 
+        public long GetTpidrEl0() => GetStorage().TpidrEl0;
+        public void SetTpidrEl0(long value) => GetStorage().TpidrEl0 = value;
+
+        public long GetTpidrroEl0() => GetStorage().TpidrroEl0;
+        public void SetTpidrroEl0(long value) => GetStorage().TpidrroEl0 = value;
+
         public int GetCounter() => GetStorage().Counter;
         public void SetCounter(int value) => GetStorage().Counter = value;
 
@@ -214,6 +222,16 @@ namespace ARMeilleure.State
             }
         }
 
+        public static int GetTpidrEl0Offset()
+        {
+            return StorageOffset(ref _dummyStorage, ref _dummyStorage.TpidrEl0);
+        }
+
+        public static int GetTpidrroEl0Offset()
+        {
+            return StorageOffset(ref _dummyStorage, ref _dummyStorage.TpidrroEl0);
+        }
+
         public static int GetCounterOffset()
         {
             return StorageOffset(ref _dummyStorage, ref _dummyStorage.Counter);