ControllerApplet: Override player counts when SingleMode is set (#3571)

ARMeilleure/CodeGen/X86/AssemblerTable.cs

@@ -4,6 +4,11 @@ namespace ARMeilleure.CodeGen.X86
 {
     partial class Assembler
     {
+        public static bool SupportsVexPrefix(X86Instruction inst)
+        {
+            return _instTable[(int)inst].Flags.HasFlag(InstructionFlags.Vex);
+        }
+
         private const int BadOp = 0;
 
         [Flags]

ARMeilleure/CodeGen/X86/PreAllocator.cs

@@ -1297,11 +1297,15 @@ namespace ARMeilleure.CodeGen.X86
         {
             if (IsIntrinsic(operation.Instruction))
             {
+                IntrinsicInfo info = IntrinsicTable.GetInfo(operation.Intrinsic);
+
+                bool hasVex = HardwareCapabilities.SupportsVexEncoding && Assembler.SupportsVexPrefix(info.Inst);
+
                 bool isUnary = operation.SourcesCount < 2;
 
                 bool hasVecDest = operation.Destination != default && operation.Destination.Type == OperandType.V128;
 
-                return !HardwareCapabilities.SupportsVexEncoding && !isUnary && hasVecDest;
+                return !hasVex && !isUnary && hasVecDest;
             }
 
             return false;

Ryujinx.HLE/HOS/Applets/Controller/ControllerApplet.cs

@@ -72,9 +72,16 @@ namespace Ryujinx.HLE.HOS.Applets
 
             int playerMin = argHeader.PlayerCountMin;
             int playerMax = argHeader.PlayerCountMax;
+            bool singleMode = argHeader.EnableSingleMode != 0;
 
             Logger.Stub?.PrintStub(LogClass.ServiceHid, $"ControllerApplet Arg {playerMin} {playerMax} {argHeader.EnableTakeOverConnection} {argHeader.EnableSingleMode}");
 
+            if (singleMode)
+            {
+                // Applications can set an arbitrary player range even with SingleMode, so clamp it
+                playerMin = playerMax = 1;
+            }
+
             int configuredCount = 0;
             PlayerIndex primaryIndex = PlayerIndex.Unknown;
             while (!_system.Device.Hid.Npads.Validate(playerMin, playerMax, (ControllerType)privateArg.NpadStyleSet, out configuredCount, out primaryIndex))