Implement inline memory load/store exclusive and ordered (#1413)

* Implement inline memory load/store exclusive

* Fix missing REX prefix on 8-bits CMPXCHG

* Increment PTC version due to bugfix

* Remove redundant memory checks

* Address PR feedback

* Increment PPTC version

1 files changed, 15 insertions, 0 deletions

diff --git a/ARMeilleure/State/NativeContext.cs b/ARMeilleure/State/NativeContext.cs
index 9df69a4e..09ec6cde 100644
--- a/ARMeilleure/State/NativeContext.cs
+++ b/ARMeilleure/State/NativeContext.cs
@@ -15,6 +15,9 @@ namespace ARMeilleure.State
             public fixed uint FpFlags[RegisterConsts.FpFlagsCount];
             public int Counter;
             public ulong CallAddress;
+            public ulong ExclusiveAddress;
+            public ulong ExclusiveValueLow;
+            public ulong ExclusiveValueHigh;
         }
 
         private static NativeCtxStorage _dummyStorage = new NativeCtxStorage();
@@ -26,6 +29,8 @@ namespace ARMeilleure.State
         public NativeContext(IJitMemoryAllocator allocator)
         {
             _block = allocator.Allocate((ulong)Unsafe.SizeOf<NativeCtxStorage>());
+
+            GetStorage().ExclusiveAddress = ulong.MaxValue;
         }
 
         public unsafe ulong GetX(int index)
@@ -162,6 +167,16 @@ namespace ARMeilleure.State
             return StorageOffset(ref _dummyStorage, ref _dummyStorage.CallAddress);
         }
 
+        public static int GetExclusiveAddressOffset()
+        {
+            return StorageOffset(ref _dummyStorage, ref _dummyStorage.ExclusiveAddress);
+        }
+
+        public static int GetExclusiveValueOffset()
+        {
+            return StorageOffset(ref _dummyStorage, ref _dummyStorage.ExclusiveValueLow);
+        }
+
         private static int StorageOffset<T>(ref NativeCtxStorage storage, ref T target)
         {
             return (int)Unsafe.ByteOffset(ref Unsafe.As<NativeCtxStorage, T>(ref storage), ref target);