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diff --git a/src/mem/ruby/filters/NonCountingBloomFilter.hh b/src/mem/ruby/filters/NonCountingBloomFilter.hh
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+
+/*
+ * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * NonCountingBloomFilter.hh
+ *
+ * Description:
+ *
+ *
+ */
+
+#ifndef NONCOUNTING_BLOOM_FILTER_H
+#define NONCOUNTING_BLOOM_FILTER_H
+
+#include "mem/gems_common/Map.hh"
+#include "mem/ruby/common/Global.hh"
+#include "mem/ruby/config/RubyConfig.hh"
+#include "mem/ruby/common/Address.hh"
+#include "mem/ruby/filters/AbstractBloomFilter.hh"
+
+class NonCountingBloomFilter : public AbstractBloomFilter {
+public:
+
+  ~NonCountingBloomFilter();
+  NonCountingBloomFilter(string config);
+
+  void clear();
+  void increment(const Address& addr);
+  void decrement(const Address& addr);
+  void merge(AbstractBloomFilter * other_filter);
+  void set(const Address& addr);
+  void unset(const Address& addr);
+
+  bool isSet(const Address& addr);
+  int getCount(const Address& addr);
+  int getTotalCount();
+
+  int getIndex(const Address& addr);
+  int readBit(const int index);
+  void writeBit(const int index, const int value);
+
+  void print(ostream& out) const;
+
+  int operator[](const int index) const{
+    return this->m_filter[index];
+  }
+
+private:
+
+  int get_index(const Address& addr);
+
+  Vector<int> m_filter;
+  int m_filter_size;
+  int m_offset;
+  int m_filter_size_bits;
+
+  int m_count_bits;
+  int m_count;
+};
+
+
+#endif