1 files changed, 60 insertions, 0 deletions
diff --git a/src/Ryujinx.HLE/HOS/UserChannelPersistence.cs b/src/Ryujinx.HLE/HOS/UserChannelPersistence.cs
new file mode 100644
index 00000000..4b041ce8
--- /dev/null
+++ b/src/Ryujinx.HLE/HOS/UserChannelPersistence.cs
@@ -0,0 +1,60 @@
+using Ryujinx.HLE.HOS.Services.Am.AppletOE.ApplicationProxyService.ApplicationProxy.Types;
+using System;
+using System.Collections.Generic;
+
+namespace Ryujinx.HLE.HOS
+{
+    public class UserChannelPersistence
+    {
+        private Stack<byte[]> _userChannelStorages;
+        public int PreviousIndex { get; private set; }
+        public int Index { get; private set; }
+        public ProgramSpecifyKind Kind { get; private set; }
+        public bool ShouldRestart { get; set; }
+
+        public UserChannelPersistence()
+        {
+            _userChannelStorages = new Stack<byte[]>();
+            Kind = ProgramSpecifyKind.ExecuteProgram;
+            PreviousIndex = -1;
+            Index = 0;
+        }
+
+        public void Clear()
+        {
+            _userChannelStorages.Clear();
+        }
+
+        public void Push(byte[] data)
+        {
+            _userChannelStorages.Push(data);
+        }
+
+        public byte[] Pop()
+        {
+            _userChannelStorages.TryPop(out byte[] result);
+
+            return result;
+        }
+
+        public bool IsEmpty => _userChannelStorages.Count == 0;
+
+        public void ExecuteProgram(ProgramSpecifyKind kind, ulong value)
+        {
+            Kind = kind;
+            PreviousIndex = Index;
+            ShouldRestart = true;
+
+            switch (kind)
+            {
+                case ProgramSpecifyKind.ExecuteProgram:
+                    Index = (int)value;
+                    break;
+                case ProgramSpecifyKind.RestartProgram:
+                    break;
+                default:
+                    throw new NotImplementedException($"{kind} not implemented");
+            }
+        }
+    }
+}