Make PPTC state non-static (#4157)

* Make PPTC state non-static

* DiskCacheLoadState can be null

Ryujinx.Cpu/ICpuContext.cs

@@ -35,5 +35,27 @@ namespace Ryujinx.Cpu
         /// <param name="address">Address of the region to be invalidated</param>
         /// <param name="size">Size of the region to be invalidated</param>
         void InvalidateCacheRegion(ulong address, ulong size);
+
+        /// <summary>
+        /// Loads cached code from disk for a given application.
+        /// </summary>
+        /// <remarks>
+        /// If the execution engine is recompiling guest code, this can be used to load cached code from disk.
+        /// </remarks>
+        /// <param name="titleIdText">Title ID of the application in padded hex form</param>
+        /// <param name="displayVersion">Version of the application</param>
+        /// <param name="enabled">True if the cache should be loaded from disk if it exists, false otherwise</param>
+        /// <returns>Disk cache load progress reporter and manager</returns>
+        IDiskCacheLoadState LoadDiskCache(string titleIdText, string displayVersion, bool enabled);
+
+        /// <summary>
+        /// Indicates that code has been loaded into guest memory, and that it might be executed in the future.
+        /// </summary>
+        /// <remarks>
+        /// Some execution engines might use this information to cache recompiled code on disk or to ensure it can be executed.
+        /// </remarks>
+        /// <param name="address">CPU virtual address where the code starts</param>
+        /// <param name="size">Size of the code range in bytes</param>
+        void PrepareCodeRange(ulong address, ulong size);
     }
 }

Ryujinx.Cpu/IDiskCacheState.cs

@@ -0,0 +1,20 @@
+using System;
+
+namespace Ryujinx.Cpu
+{
+    /// <summary>
+    /// Disk cache load state report and management interface.
+    /// </summary>
+    public interface IDiskCacheLoadState
+    {
+        /// <summary>
+        /// Event used to report the cache load progress.
+        /// </summary>
+        event Action<LoadState, int, int> StateChanged;
+
+        /// <summary>
+        /// Cancels the disk cache load process.
+        /// </summary>
+        void Cancel();
+    }
+}

Ryujinx.Cpu/Jit/JitCpuContext.cs

@@ -37,5 +37,17 @@ namespace Ryujinx.Cpu.Jit
         {
             _translator.InvalidateJitCacheRegion(address, size);
         }
+
+        /// <inheritdoc/>
+        public IDiskCacheLoadState LoadDiskCache(string titleIdText, string displayVersion, bool enabled)
+        {
+            return new JitDiskCacheLoadState(_translator.LoadDiskCache(titleIdText, displayVersion, enabled));
+        }
+
+        /// <inheritdoc/>
+        public void PrepareCodeRange(ulong address, ulong size)
+        {
+            _translator.PrepareCodeRange(address, size);
+        }
     }
 }

Ryujinx.Cpu/Jit/JitDiskCacheLoadState.cs

@@ -0,0 +1,38 @@
+using ARMeilleure.Translation.PTC;
+using System;
+
+namespace Ryujinx.Cpu.Jit
+{
+    public class JitDiskCacheLoadState : IDiskCacheLoadState
+    {
+        /// <inheritdoc/>
+        public event Action<LoadState, int, int> StateChanged;
+
+        private readonly IPtcLoadState _loadState;
+
+        public JitDiskCacheLoadState(IPtcLoadState loadState)
+        {
+            loadState.PtcStateChanged += LoadStateChanged;
+            _loadState = loadState;
+        }
+
+        private void LoadStateChanged(PtcLoadingState newState, int current, int total)
+        {
+            LoadState state = newState switch
+            {
+                PtcLoadingState.Start => LoadState.Unloaded,
+                PtcLoadingState.Loading => LoadState.Loading,
+                PtcLoadingState.Loaded => LoadState.Loaded,
+                _ => throw new ArgumentException($"Invalid load state \"{newState}\".")
+            };
+
+            StateChanged?.Invoke(state, current, total);
+        }
+
+        /// <inheritdoc/>
+        public void Cancel()
+        {
+            _loadState.Continue();
+        }
+    }
+}

Ryujinx.Cpu/LoadState.cs

@@ -0,0 +1,12 @@
+namespace Ryujinx.Cpu
+{
+    /// <summary>
+    /// Load state.
+    /// </summary>
+    public enum LoadState
+    {
+        Unloaded,
+        Loading,
+        Loaded
+    }
+}