diff -r b765a6383849 -r b40b0e18a918 jitcraft/Functions.h
--- a/jitcraft/Functions.h	Mon Jul 09 22:25:52 2012 -0700
+++ b/jitcraft/Functions.h	Tue Jul 10 02:11:13 2012 -0700
@@ -67,6 +67,9 @@
     static inline size_t offsetOfType() {
         return offsetof(Function, type_);
     }
+    static inline size_t offsetOfName() {
+        return offsetof(Function, name_);
+    }
     // End GC Descriptor.
 
     static inline Function *cast(Object *obj) {
@@ -75,6 +78,45 @@
     }
 };
 
+// A Native is a function with a very specialized calling convention, intended
+// for earlier ISourcePawnEngine API compatibility.
+class Native : public Object
+{
+    Barriered<Type> type_;
+    Barriered<String> name_;
+    void *function_;
+
+  public:
+    static Native *New(Zone *zone, Handle<Type> type, Handle<String> name);
+
+    void *function() {
+        return function_;
+    }
+    Type *type() {
+        return type_;
+    }
+    String *name() {
+        return name_;
+    }
+    void bind(void *function) {
+        function_ = function;
+    }
+
+    // Begin GC Descriptor.
+    static inline size_t offsetOfType() {
+        return offsetof(Native, type_);
+    }
+    static inline size_t offsetOfName() {
+        return offsetof(Native, name_);
+    }
+    // End GC Descriptor.
+
+    static inline Native *cast(Object *obj) {
+        assert(!obj || obj->is(MapKind_Native));
+        return reinterpret_cast<Native *>(obj);
+    }
+};
+
 }
 
 #endif // _include_jitcraft_function_h_