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diff --git a/tools/gnu/classpath/tools/javah/ClassWrapper.java b/tools/gnu/classpath/tools/javah/ClassWrapper.java
new file mode 100644
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+++ b/tools/gnu/classpath/tools/javah/ClassWrapper.java
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+/* ClassWrapper.java - wrap ASM class objects
+ Copyright (C) 2006 Free Software Foundation, Inc.
+
+ This file is part of GNU Classpath.
+
+ GNU Classpath is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ GNU Classpath 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 for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNU Classpath; see the file COPYING.  If not, write to the
+ Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ 02110-1301 USA.
+
+ Linking this library statically or dynamically with other modules is
+ making a combined work based on this library.  Thus, the terms and
+ conditions of the GNU General Public License cover the whole
+ combination.
+
+ As a special exception, the copyright holders of this library give you
+ permission to link this library with independent modules to produce an
+ executable, regardless of the license terms of these independent
+ modules, and to copy and distribute the resulting executable under
+ terms of your choice, provided that you also meet, for each linked
+ independent module, the terms and conditions of the license of that
+ module.  An independent module is a module which is not derived from
+ or based on this library.  If you modify this library, you may extend
+ this exception to your version of the library, but you are not
+ obligated to do so.  If you do not wish to do so, delete this
+ exception statement from your version. */
+
+
+package gnu.classpath.tools.javah;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.PrintStream;
+import java.lang.reflect.Modifier;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.Iterator;
+
+import org.objectweb.asm.tree.ClassNode;
+import org.objectweb.asm.tree.FieldNode;
+import org.objectweb.asm.tree.MethodNode;
+
+public class ClassWrapper
+    extends ClassNode
+{
+  Main classpath;
+
+  ClassWrapper superClass;
+
+  ArrayList interfaceClasses;
+
+  // The virtual table for this class.
+  ArrayList vtable;
+
+  // A set of all the bridge method targets we've found.
+  HashSet bridgeTargets;
+
+  // A set of all the method names in this class.
+  HashSet methodNames = new HashSet();
+
+  public ClassWrapper(Main classpath)
+  {
+    this.classpath = classpath;
+  }
+
+  public boolean hasNativeMethod()
+  {
+    Iterator i = methods.iterator();
+    while (i.hasNext())
+      {
+        MethodNode method = (MethodNode) i.next();
+        if (Modifier.isNative(method.access))
+          return true;
+      }
+    return false;
+  }
+
+  public boolean isThrowable() throws IOException
+  {
+    linkSupers();
+    ClassWrapper self = this;
+    while (self != null)
+      {
+        if (self.name.equals("java/lang/Throwable"))
+          return true;
+        self = self.superClass;
+      }
+    return false;
+  }
+
+  private void linkSupers() throws IOException
+  {
+    if (superName == null)
+      {
+        // Object, do nothing.
+        return;
+      }
+    if (superClass == null)
+      {
+        superClass = classpath.getClass(superName);
+        assert interfaceClasses == null;
+        interfaceClasses = new ArrayList();
+        for (int i = 0; i < interfaces.size(); ++i)
+          {
+            String ifname = (String) interfaces.get(i);
+            ClassWrapper iface = classpath.getClass(ifname);
+            iface.linkSupers();
+            interfaceClasses.add(iface);
+          }
+      }
+    superClass.linkSupers();
+  }
+
+  private int findSlot(MethodNode method)
+  {
+    for (int i = vtable.size() - 1; i >= 0; --i)
+      {
+        MethodNode base = (MethodNode) vtable.get(i);
+        if (MethodHelper.overrides(method, base))
+          return i;
+      }
+    return - 1;
+  }
+
+  private void addInterfaceMethods(ClassWrapper iface)
+  {
+    Iterator i = iface.methods.iterator();
+    while (i.hasNext())
+      {
+        MethodNode im = (MethodNode) i.next();
+        int slot = findSlot(im);
+        if (slot == - 1)
+          {
+            vtable.add(im);
+            // Also add it to our local methods.
+            methods.add(im);
+          }
+      }
+    addInterfaces(iface);
+  }
+
+  private void addInterfaces(ClassWrapper base)
+  {
+    if (base.interfaceClasses == null)
+      return;
+    Iterator i = base.interfaceClasses.iterator();
+    while (i.hasNext())
+      {
+        ClassWrapper iface = (ClassWrapper) i.next();
+        addInterfaceMethods(iface);
+      }
+  }
+
+  private void addLocalMethods()
+  {
+    Iterator i = methods.iterator();
+    while (i.hasNext())
+      {
+        MethodNode meth = (MethodNode) i.next();
+        methodNames.add(meth.name);
+        if (Modifier.isStatic(meth.access))
+          continue;
+        int slot = findSlot(meth);
+        if (slot == - 1)
+          vtable.add(meth);
+        else
+          vtable.set(slot, meth);
+      }
+  }
+
+  private void makeVtable() throws IOException
+  {
+    if (vtable != null)
+      return;
+    if (superClass != null)
+      {
+        superClass.makeVtable();
+        vtable = new ArrayList(superClass.vtable);
+        bridgeTargets = new HashSet(superClass.bridgeTargets);
+      }
+    else
+      {
+        // Object.
+        vtable = new ArrayList();
+        bridgeTargets = new HashSet();
+      }
+    addLocalMethods();
+    addInterfaces(this);
+
+    // Make a set of all the targets of bridge methods.
+    // We rename bridge methods to avoid problems with C++.
+    Iterator i = methods.iterator();
+    while (i.hasNext())
+      {
+        MethodNode m = (MethodNode) i.next();
+        String desc = MethodHelper.getBridgeTarget(m);
+        if (desc != null)
+          bridgeTargets.add(m.name + desc);
+      }
+  }
+
+  private void printFields(CniPrintStream out)
+  {
+    Iterator i = fields.iterator();
+    ClassWrapper self = superClass;
+    while (i.hasNext())
+      {
+        FieldNode f = (FieldNode) i.next();
+        boolean hasMethodName = methodNames.contains(f.name);
+        if (FieldHelper.print(out, f, self, hasMethodName))
+          self = null;
+      }
+  }
+
+  private void printMethods(CniPrintStream out) throws IOException
+  {
+    makeVtable();
+
+    // A given method is either static, overrides a super method, or
+    // is already in vtable order.
+    Iterator i = methods.iterator();
+    while (i.hasNext())
+      {
+        MethodNode m = (MethodNode) i.next();
+        boolean isTarget = bridgeTargets.contains(m.name + m.desc);
+        MethodHelper.print(out, m, this, isTarget);
+      }
+  }
+
+  private void printTextList(PrintStream out, int what, ArrayList textList)
+  {
+    if (textList == null)
+      return;
+    Iterator i = textList.iterator();
+    boolean first = true;
+    while (i.hasNext())
+      {
+        Text item = (Text) i.next();
+        if (item.type == what)
+          {
+            if (first)
+              {
+                out.println();
+                first = false;
+              }
+            if (what == Text.FRIEND)
+              out.print("  friend ");
+            out.println(item.text);
+          }
+      }
+  }
+
+  public void print(CniPrintStream out)
+  {
+    out.print("::" + name.replaceAll("/", "::"));
+  }
+
+  // This prints the body of a class to a CxxPrintStream.
+  private void printContents(CniPrintStream out, ArrayList textList)
+      throws IOException
+  {
+    printTextList(out, Text.PREPEND, textList);
+    out.println();
+
+    out.print("class ");
+    // Don't use our print() -- we don't want the leading "::".
+    out.print(name.replaceAll("/", "::"));
+    if (superClass != null)
+      {
+        out.print(" : public ");
+        superClass.print(out);
+      }
+    out.println();
+    out.println("{");
+
+    printTextList(out, Text.ADD, textList);
+    out.println();
+
+    // Note: methods must come first, as we build the list
+    // of method names while printing them.
+    printMethods(out);
+    printFields(out);
+
+    out.setModifiers(Modifier.PUBLIC);
+    out.println("  static ::java::lang::Class class$;");
+
+    printTextList(out, Text.FRIEND, textList);
+
+    out.print("}");
+    if (Modifier.isInterface(access))
+      out.print(" __attribute__ ((java_interface))");
+    out.println(";");
+
+    printTextList(out, Text.APPEND, textList);
+  }
+
+  public void printFully(PrintStream out) throws IOException
+  {
+    linkSupers();
+
+    ArrayList textList = classpath.getClassTextList(name);
+
+    out.println("// DO NOT EDIT THIS FILE - it is machine generated -*- c++ -*-");
+    out.println();
+    String xname = "__" + name.replaceAll("/", "_") + "__";
+    out.println("#ifndef " + xname);
+    out.println("#define " + xname);
+    out.println();
+    out.println("#pragma interface");
+    out.println();
+
+    if (superClass != null)
+      {
+        out.print("#include <");
+        out.print(superName);
+        out.println(".h>");
+      }
+
+    // Write the body of the stream here. This lets
+    // us emit the namespaces without a second pass.
+    ByteArrayOutputStream bytes = new ByteArrayOutputStream();
+    CniPrintStream cxxOut = new CniPrintStream(bytes);
+    cxxOut.addClass(this);
+    printContents(cxxOut, textList);
+    cxxOut.printNamespaces(out);
+    bytes.writeTo(out);
+
+    out.println();
+    out.println("#endif // " + xname);
+  }
+}