From b323a017385ac6e08db4025fe4ef1bfbb41607ab Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Tue, 26 Mar 2024 23:33:24 -0300
Subject: Implement host tracked memory manager mode (#6356)

* Add host tracked memory manager mode

* Skipping flush is no longer needed

* Formatting + revert unrelated change

* LightningJit: Ensure that dest register is saved for load ops that do partial updates

* avoid allocations when doing address space lookup

Add missing improvement

* IsRmwMemory -> IsPartialRegisterUpdateMemory

* Ensure we iterate all private allocations in range

* PR feedback and potential fixes

* Simplified bridges a lot

* Skip calling SignalMappingChanged if Guest is true

* Late map bridge too

* Force address masking for prefetch instructions

* Reprotection for bridges

* Move partition list validation to separate debug method

* Move host tracked related classes to HostTracked folder

* New HostTracked namespace

* Move host tracked modes to the end of enum to avoid PPTC invalidation

---------

Co-authored-by: riperiperi <rhy3756547@hotmail.com>
---
 src/ARMeilleure/Memory/MemoryManagerType.cs | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'src/ARMeilleure/Memory')

diff --git a/src/ARMeilleure/Memory/MemoryManagerType.cs b/src/ARMeilleure/Memory/MemoryManagerType.cs
index b1cdbb06..bc8ae263 100644
--- a/src/ARMeilleure/Memory/MemoryManagerType.cs
+++ b/src/ARMeilleure/Memory/MemoryManagerType.cs
@@ -29,6 +29,18 @@ namespace ARMeilleure.Memory
         /// Allows invalid access from JIT code to the rest of the program, but is faster.
         /// </summary>
         HostMappedUnsafe,
+
+        /// <summary>
+        /// High level implementation using a software flat page table for address translation
+        /// with no support for handling invalid or non-contiguous memory access.
+        /// </summary>
+        HostTracked,
+
+        /// <summary>
+        /// High level implementation using a software flat page table for address translation
+        /// without masking the address and no support for handling invalid or non-contiguous memory access.
+        /// </summary>
+        HostTrackedUnsafe,
     }
 
     public static class MemoryManagerTypeExtensions
@@ -37,5 +49,15 @@ namespace ARMeilleure.Memory
         {
             return type == MemoryManagerType.HostMapped || type == MemoryManagerType.HostMappedUnsafe;
         }
+
+        public static bool IsHostTracked(this MemoryManagerType type)
+        {
+            return type == MemoryManagerType.HostTracked || type == MemoryManagerType.HostTrackedUnsafe;
+        }
+
+        public static bool IsHostMappedOrTracked(this MemoryManagerType type)
+        {
+            return type.IsHostMapped() || type.IsHostTracked();
+        }
     }
 }
-- 
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