diff --git a/BizHawk.Emulation.Common/Extensions.cs b/BizHawk.Emulation.Common/Extensions.cs
index b84b23e31f..cebec05246 100644
--- a/BizHawk.Emulation.Common/Extensions.cs
+++ b/BizHawk.Emulation.Common/Extensions.cs
@@ -22,6 +22,18 @@ namespace BizHawk.Emulation.Common.IEmulatorExtensions
 			return !info.GetCustomAttributes(false).OfType<FeatureNotImplemented>().Any();
 		}
 
+		public static bool ThrowsError(this MethodInfo info)
+		{
+			var il = info.GetMethodBody().GetILAsByteArray();
+			return (il[il.Length - 1] == 0x7A);
+		}
+
+		public static bool IsEmpty(this MethodInfo info)
+		{
+			var il = info.GetMethodBody().GetILAsByteArray();
+			return (il.Length == 1 && il[0] == 0x2A);
+		}
+
 		public static bool IsImplemented(this PropertyInfo info)
 		{
 			return !info.GetCustomAttributes(false).OfType<FeatureNotImplemented>().Any();