ARM exclusive monitor and multicore fixes (#589)

* Implement ARM exclusive load/store with compare exchange insts, and enable multicore by default

* Fix comment typo

* Support Linux and OSX on MemoryAlloc and CompareExchange128, some cleanup

* Use intel syntax on assembly code

* Adjust identation

* Add CPUID check and fix exclusive reservation granule size

* Update schema multicore scheduling default value

* Make the cpu id check code lower case aswell

1 files changed, 30 insertions, 1 deletions

diff --git a/ChocolArm64/State/CpuThreadState.cs b/ChocolArm64/State/CpuThreadState.cs
index abec60bb..caf73deb 100644
--- a/ChocolArm64/State/CpuThreadState.cs
+++ b/ChocolArm64/State/CpuThreadState.cs
@@ -37,7 +37,6 @@ namespace ChocolArm64.State
         public int ElrHyp;
 
         public bool Running { get; set; }
-        public int  Core    { get; set; }
 
         private bool _interrupted;
 
@@ -85,6 +84,16 @@ namespace ChocolArm64.State
 
         internal Translator CurrentTranslator;
 
+        private ulong _exclusiveAddress;
+
+        internal ulong ExclusiveValueLow  { get; set; }
+        internal ulong ExclusiveValueHigh { get; set; }
+
+        public CpuThreadState()
+        {
+            ClearExclusiveAddress();
+        }
+
         static CpuThreadState()
         {
             _hostTickFreq = 1.0 / Stopwatch.Frequency;
@@ -94,6 +103,26 @@ namespace ChocolArm64.State
             _tickCounter.Start();
         }
 
+        internal void SetExclusiveAddress(ulong address)
+        {
+            _exclusiveAddress = GetMaskedExclusiveAddress(address);
+        }
+
+        internal bool CheckExclusiveAddress(ulong address)
+        {
+            return GetMaskedExclusiveAddress(address) == _exclusiveAddress;
+        }
+
+        internal void ClearExclusiveAddress()
+        {
+            _exclusiveAddress = ulong.MaxValue;
+        }
+
+        private ulong GetMaskedExclusiveAddress(ulong address)
+        {
+            return address & ~((4UL << ErgSizeLog2) - 1);
+        }
+
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         internal bool Synchronize(int bbWeight)
         {