Migrate to .NET 9

src/Ryujinx.Cpu/AppleHv/HvVm.cs

@@ -1,6 +1,7 @@
 using Ryujinx.Memory;
 using System;
 using System.Runtime.Versioning;
+using System.Threading;
 
 namespace Ryujinx.Cpu.AppleHv
 {
@@ -12,7 +13,7 @@ namespace Ryujinx.Cpu.AppleHv
 
         private static int _addressSpaces;
         private static HvIpaAllocator _ipaAllocator;
-        private static readonly object _lock = new();
+        private static readonly Lock _lock = new();
 
         public static (ulong, HvIpaAllocator) CreateAddressSpace(MemoryBlock block)
         {

src/Ryujinx.Cpu/LightningJit/Arm32/Target/Arm64/InstEmitSystem.cs

@@ -478,7 +478,7 @@ namespace Ryujinx.Cpu.LightningJit.Arm32.Target.Arm64
             bool skipContext,
             int spillBaseOffset,
             int? resultRegister,
-            params ulong[] callArgs)
+            params ReadOnlySpan<ulong> callArgs)
         {
             uint resultMask = 0u;
 

src/Ryujinx.Cpu/LightningJit/Arm64/Target/Arm64/InstEmitSystem.cs

@@ -307,7 +307,7 @@ namespace Ryujinx.Cpu.LightningJit.Arm64.Target.Arm64
             int tempRegister;
             int tempGuestAddress = -1;
 
-            bool inlineLookup = guestAddress.Kind != OperandKind.Constant && 
+            bool inlineLookup = guestAddress.Kind != OperandKind.Constant &&
                                 funcTable is { Sparse: true };
 
             if (guestAddress.Kind == OperandKind.Constant)
@@ -417,7 +417,7 @@ namespace Ryujinx.Cpu.LightningJit.Arm64.Target.Arm64
             IntPtr funcPtr,
             int spillBaseOffset,
             int? resultRegister,
-            params ulong[] callArgs)
+            params ReadOnlySpan<ulong> callArgs)
         {
             uint resultMask = 0u;
 

src/Ryujinx.Cpu/LightningJit/Cache/JitCache.cs

@@ -5,6 +5,7 @@ using System.Collections.Generic;
 using System.Diagnostics;
 using System.Runtime.InteropServices;
 using System.Runtime.Versioning;
+using System.Threading;
 
 namespace Ryujinx.Cpu.LightningJit.Cache
 {
@@ -23,7 +24,7 @@ namespace Ryujinx.Cpu.LightningJit.Cache
 
         private static readonly List<CacheEntry> _cacheEntries = new();
 
-        private static readonly object _lock = new();
+        private static readonly Lock _lock = new();
         private static bool _initialized;
 
         [SupportedOSPlatform("windows")]

src/Ryujinx.Cpu/LightningJit/Cache/NoWxCache.cs

@@ -4,6 +4,7 @@ using Ryujinx.Memory;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
+using System.Threading;
 
 namespace Ryujinx.Cpu.LightningJit.Cache
 {
@@ -104,7 +105,7 @@ namespace Ryujinx.Cpu.LightningJit.Cache
         private readonly MemoryCache _sharedCache;
         private readonly MemoryCache _localCache;
         private readonly PageAlignedRangeList _pendingMap;
-        private readonly object _lock;
+        private readonly Lock _lock = new();
 
         class ThreadLocalCacheEntry
         {
@@ -137,7 +138,6 @@ namespace Ryujinx.Cpu.LightningJit.Cache
             _sharedCache = new(allocator, SharedCacheSize);
             _localCache = new(allocator, LocalCacheSize);
             _pendingMap = new(_sharedCache.ReprotectAsRx, RegisterFunction);
-            _lock = new();
         }
 
         public unsafe IntPtr Map(IntPtr framePointer, ReadOnlySpan<byte> code, ulong guestAddress, ulong guestSize)

src/Ryujinx.Cpu/Ryujinx.Cpu.csproj

@@ -1,7 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 

src/Ryujinx.Cpu/Signal/NativeSignalHandler.cs

@@ -5,6 +5,7 @@ using System;
 using System.Diagnostics;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using System.Threading;
 
 namespace Ryujinx.Cpu.Signal
 {
@@ -59,7 +60,7 @@ namespace Ryujinx.Cpu.Signal
 
         private static MemoryBlock _codeBlock;
 
-        private static readonly object _lock = new();
+        private static readonly Lock _lock = new();
         private static bool _initialized;
 
         static NativeSignalHandler()