--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/agent/src/share/classes/sun/jvm/hotspot/interpreter/Interpreter.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2000 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+package sun.jvm.hotspot.interpreter;
+
+import java.util.*;
+import sun.jvm.hotspot.code.*;
+import sun.jvm.hotspot.debugger.*;
+import sun.jvm.hotspot.runtime.*;
+import sun.jvm.hotspot.types.*;
+
+public class Interpreter {
+  private static AddressField codeField;
+
+  static {
+    VM.registerVMInitializedObserver(new Observer() {
+        public void update(Observable o, Object data) {
+          initialize(VM.getVM().getTypeDataBase());
+        }
+      });
+  }
+
+  private static synchronized void initialize(TypeDataBase db) {
+    Type type = db.lookupType("AbstractInterpreter");
+
+    codeField     = type.getAddressField("_code");
+  }
+
+  public Interpreter() {
+  }
+
+  public StubQueue getCode() {
+    Address code = codeField.getValue();
+    if (code == null) return null;
+    return new StubQueue(code, InterpreterCodelet.class);
+  }
+
+  public boolean contains(Address pc) {
+    return getCode().contains(pc);
+  }
+
+  /** Debugging/printing */
+  public InterpreterCodelet getCodeletContaining(Address pc) {
+    return (InterpreterCodelet) getCode().getStubContaining(pc);
+  }
+}