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

1 files changed, 24 insertions, 0 deletions

diff --git a/Ryujinx.Cpu/JitMemoryBlock.cs b/Ryujinx.Cpu/JitMemoryBlock.cs
new file mode 100644
index 00000000..3ad62d71
--- /dev/null
+++ b/Ryujinx.Cpu/JitMemoryBlock.cs
@@ -0,0 +1,24 @@
+using ARMeilleure.Memory;
+using Ryujinx.Memory;
+using System;
+
+namespace Ryujinx.Cpu
+{
+    class JitMemoryBlock : IJitMemoryBlock
+    {
+        private readonly MemoryBlock _impl;
+
+        public IntPtr Pointer => _impl.Pointer;
+
+        public JitMemoryBlock(ulong size, MemoryAllocationFlags flags)
+        {
+            _impl = new MemoryBlock(size, flags);
+        }
+
+        public bool Commit(ulong offset, ulong size) => _impl.Commit(offset, size);
+        public void MapAsRx(ulong offset, ulong size) => _impl.Reprotect(offset, size, MemoryPermission.ReadAndExecute);
+        public void MapAsRwx(ulong offset, ulong size) => _impl.Reprotect(offset, size, MemoryPermission.ReadWriteExecute);
+
+        public void Dispose() => _impl.Dispose();
+    }
+}