From f77694e4f774c9391aad5344e70a7c8721cfedc6 Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Sun, 3 May 2020 19:54:50 -0300
Subject: 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
---
 Ryujinx.Memory/MemoryAllocationFlags.cs | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 Ryujinx.Memory/MemoryAllocationFlags.cs

(limited to 'Ryujinx.Memory/MemoryAllocationFlags.cs')

diff --git a/Ryujinx.Memory/MemoryAllocationFlags.cs b/Ryujinx.Memory/MemoryAllocationFlags.cs
new file mode 100644
index 00000000..94025d38
--- /dev/null
+++ b/Ryujinx.Memory/MemoryAllocationFlags.cs
@@ -0,0 +1,28 @@
+using System;
+
+namespace Ryujinx.Memory
+{
+    /// <summary>
+    /// Flags that controls allocation and other properties of the memory block memory.
+    /// </summary>
+    [Flags]
+    public enum MemoryAllocationFlags
+    {
+        /// <summary>
+        /// No special allocation settings.
+        /// </summary>
+        None = 0,
+
+        /// <summary>
+        /// Reserve a region of memory on the process address space,
+        /// without actually allocation any backing memory.
+        /// </summary>
+        Reserve = 1 << 0,
+
+        /// <summary>
+        /// Enables read and write tracking of the memory block.
+        /// This currently does nothing and is reserved for future use.
+        /// </summary>
+        Tracked = 1 << 1
+    }
+}
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