Add an IDisassemblable emulator service, currently no core implements it, just the interface and the IEmulator extensions

BizHawk.Emulation.Common/BizHawk.Emulation.Common.csproj

@@ -72,6 +72,7 @@
     <Compile Include="Interfaces\IController.cs" />
     <Compile Include="Interfaces\ICoreFileProvider.cs" />
     <Compile Include="Interfaces\IDebuggable.cs" />
+    <Compile Include="Interfaces\IDisassemblable.cs" />
     <Compile Include="Interfaces\IDriveLight.cs" />
     <Compile Include="Interfaces\IEmulator.cs" />
     <Compile Include="Interfaces\IEmulatorService.cs" />

BizHawk.Emulation.Common/Extensions.cs

@@ -157,6 +157,21 @@ namespace BizHawk.Emulation.Common.IEmulatorExtensions
 			return false;
 		}
 
+		public static bool CanDisassemble(this IEmulator core)
+		{
+			if (core == null)
+			{
+				return false;
+			}
+
+			return core.ServiceProvider.HasService<IDisassemblable>();
+		}
+
+		public static IDisassemblable AsDissassembler(this IEmulator core)
+		{
+			return (IDisassemblable)core.ServiceProvider.GetService<IDisassemblable>(); 
+		}
+
 		// TODO: a better place for these
 		public static bool IsImplemented(this MethodInfo info)
 		{

BizHawk.Emulation.Common/Interfaces/IDisassemblable.cs

@@ -0,0 +1,23 @@
+using System.Collections.Generic;
+
+namespace BizHawk.Emulation.Common
+{
+	public interface IDisassemblable : IEmulator, IEmulatorService
+	{
+		/// <summary>
+		/// Gets or sets the Cpu that will be used to disassemble
+		/// Only values returned from AvailableCpus will be supported when Set
+		/// </summary>
+		string Cpu { get; set; }
+
+		/// <summary>
+		/// Gets a list of Cpus that can be used when setting the Cpu property
+		/// </summary>
+		IEnumerable<string> AvailableCpus { get; set; }
+
+		/// <summary>
+		/// returns a disassembly starting at addr lasting for length, using the given domain
+		/// </summary>
+		string Disassemble(MemoryDomain m, uint addr, out int length);
+	}
+}