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diff --git a/gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/event/filters/StepFilter.java b/gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/event/filters/StepFilter.java
new file mode 100644
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+/* StepFilter.java -- a step filter
+   Copyright (C) 2005, 2007 Free Software Foundation
+
+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
+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.jdwp.event.filters;
+
+import gnu.classpath.jdwp.event.Event;
+import gnu.classpath.jdwp.exception.InvalidThreadException;
+import gnu.classpath.jdwp.id.ThreadId;
+
+/**
+ * "An event filter which restricts reported step events to those which
+ * satisfy depth and size constraints. This modifier can only be used with
+ * step event kinds."
+ *
+ * This "filter" is not really a filter. It is simply a way to communicate
+ * stepping information in a convenient way between the JDWP backend and
+ * the virtual machine.
+ * 
+ * Consequently, this "filter" always matches.
+ * 
+ * @author Keith Seitz  (keiths@redhat.com)
+ */
+public class StepFilter
+  implements IEventFilter
+{
+  private ThreadId _tid;
+  private int _size;
+  private int _depth;
+
+  /**
+   * Constructs a new StepFilter
+   *
+   * @param tid    ID of the thread in which to step
+   * @param size   size of each step
+   * @param depth  relative call stack limit
+   * @throws InvalidThreadException if thread is invalid
+   */
+  public StepFilter (ThreadId tid, int size, int depth)
+    throws InvalidThreadException
+  {
+    if (tid.getReference().get () == null)
+      throw new InvalidThreadException (tid.getId ());
+
+    _tid = tid;
+    _size = size;
+    _depth = depth;
+  }
+
+  /**
+   * Returns the thread in which to step
+   *
+   * @return the thread's ID
+   */
+  public ThreadId getThread ()
+  {
+    return _tid;
+  }
+
+  /**
+   * Returns the size of each step (insn, line)
+   *
+   * @return the step size
+   * @see gnu.classpath.jdwp.JdwpConstants.StepSize
+   */
+  public int getSize ()
+  {
+    return _size;
+  }
+
+  /**
+   * Returns the relative call stack limit (into, over, out)
+   *
+   * @return how to step
+   * @see gnu.classpath.jdwp.JdwpConstants.StepDepth
+   */
+  public int getDepth ()
+  {
+    return _depth;
+  }
+
+  /**
+   * Does the given event match the filter?
+   *
+   * @param event  the <code>Event</code> to scrutinize
+   */
+  public boolean matches (Event event)
+  {
+    return true;
+  }
+}