Stub IWriterForApplication: 0 (CreateContextRegistrar) (ryubing/ryujinx!183)

See merge request ryubing/ryujinx!183

src/Ryujinx.Common/Logging/LogClass.cs

@@ -35,6 +35,7 @@ namespace Ryujinx.Common.Logging
         ServiceBsd,
         ServiceBtm,
         ServiceCaps,
+        ServiceEctx,
         ServiceFatal,
         ServiceFriend,
         ServiceFs,

src/Ryujinx.HLE/HOS/Services/Ectx/IContextRegistrar.cs

@@ -0,0 +1,32 @@
+using System;
+using Ryujinx.Common.Logging;
+using Ryujinx.Horizon.Common;
+
+namespace Ryujinx.HLE.HOS.Services.Ectx
+{
+    class IContextRegistrar : DisposableIpcService
+    {
+        public IContextRegistrar(ServiceCtx context) { }
+
+        [CommandCmif(0)] // 11.0.0+
+        // Complete(nn::Result result, buffer<bytes, 5> raw_context) -> (i32 context_descriptor)
+        public ResultCode Complete(ServiceCtx context)
+        {
+            Result result = new(context.RequestData.ReadInt32());
+            ulong rawContextPosition = context.Request.SendBuff[0].Position;
+            ulong rawContextSize = context.Request.SendBuff[0].Size;
+
+            byte[] rawContext = new byte[rawContextSize];
+
+            context.Memory.Read(rawContextPosition, rawContext);
+
+            context.ResponseData.Write(0); // TODO: return context_descriptor
+
+            Logger.Stub?.PrintStub(LogClass.ServiceEctx, $"Result: {result}, rawContext: {Convert.ToHexString(rawContext)}" );
+
+            return ResultCode.Success;
+        }
+
+        protected override void Dispose(bool isDisposing) { }
+    }
+}

src/Ryujinx.HLE/HOS/Services/Ectx/IWriterForApplication.cs

@@ -4,5 +4,14 @@ namespace Ryujinx.HLE.HOS.Services.Ectx
     class IWriterForApplication : IpcService
     {
         public IWriterForApplication(ServiceCtx context) { }
+
+        [CommandCmif(0)]
+        // CreateContextRegistrar() -> object<nn::err::context::IContextRegistrar>
+        public ResultCode CreateContextRegistrar(ServiceCtx context)
+        {
+            MakeObject(context, new IContextRegistrar(context));
+
+            return ResultCode.Success;
+        }
     }
 }