Implement a new physical memory manager and replace DeviceMemory (#856)

* Implement a new physical memory manager and replace DeviceMemory

* Proper generic constraints

* Fix debug build

* Add memory tests

* New CPU memory manager and general code cleanup

* Remove host memory management from CPU project, use Ryujinx.Memory instead

* Fix tests

* Document exceptions on MemoryBlock

* Fix leak on unix memory allocation

* Proper disposal of some objects on tests

* Fix JitCache not being set as initialized

* GetRef without checks for 8-bits and 16-bits CAS

* Add MemoryBlock destructor

* Throw in separate method to improve codegen

* Address PR feedback

* QueryModified improvements

* Fix memory write tracking not marking all pages as modified in some cases

* Simplify MarkRegionAsModified

* Remove XML doc for ghost param

* Add back optimization to avoid useless buffer updates

* Add Ryujinx.Cpu project, move MemoryManager there and remove MemoryBlockWrapper

* Some nits

* Do not perform address translation when size is 0

* Address PR feedback and format NativeInterface class

* Remove ghost parameter description

* Update Ryujinx.Cpu to .NET Core 3.1

* Address PR feedback

* Fix build

* Return a well defined value for GetPhysicalAddress with invalid VA, and do not return unmapped ranges as modified

* Typo

2 files changed, 9 insertions, 6 deletions

diff --git a/ARMeilleure/State/ExecutionContext.cs b/ARMeilleure/State/ExecutionContext.cs
index 57a05dbf..866eafbc 100644
--- a/ARMeilleure/State/ExecutionContext.cs
+++ b/ARMeilleure/State/ExecutionContext.cs
@@ -1,3 +1,4 @@
+using ARMeilleure.Memory;
 using System;
 using System.Diagnostics;
 
@@ -73,9 +74,9 @@ namespace ARMeilleure.State
             _tickCounter.Start();
         }
 
-        public ExecutionContext()
+        public ExecutionContext(IJitMemoryAllocator allocator)
         {
-            _nativeContext = new NativeContext();
+            _nativeContext = new NativeContext(allocator);
 
             Running = true;
 
diff --git a/ARMeilleure/State/NativeContext.cs b/ARMeilleure/State/NativeContext.cs
index 95d976ee..10c4c37f 100644
--- a/ARMeilleure/State/NativeContext.cs
+++ b/ARMeilleure/State/NativeContext.cs
@@ -17,11 +17,13 @@ namespace ARMeilleure.State
                                       RegisterConsts.FlagsCount   * FlagSize +
                                       RegisterConsts.FpFlagsCount * FlagSize + ExtraSize;
 
-        public IntPtr BasePtr { get; }
+        private readonly IJitMemoryBlock _block;
 
-        public NativeContext()
+        public IntPtr BasePtr => _block.Pointer;
+
+        public NativeContext(IJitMemoryAllocator allocator)
         {
-            BasePtr = MemoryManagement.Allocate(TotalSize);
+            _block = allocator.Allocate(TotalSize);
         }
 
         public ulong GetX(int index)
@@ -193,7 +195,7 @@ namespace ARMeilleure.State
 
         public void Dispose()
         {
-            MemoryManagement.Free(BasePtr);
+            _block.Dispose();
         }
     }
 }
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