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diff --git a/src/mem/ruby/structures/AbstractReplacementPolicy.cc b/src/mem/ruby/structures/AbstractReplacementPolicy.cc
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+++ b/src/mem/ruby/structures/AbstractReplacementPolicy.cc
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+/*
+ * Copyright (c) 2013 Advanced Micro Devices, Inc
+ * 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.
+ *
+ * Author: Derek Hower
+ */
+
+#include "mem/ruby/structures/AbstractReplacementPolicy.hh"
+
+AbstractReplacementPolicy::AbstractReplacementPolicy(const Params * p)
+  : SimObject(p)
+{
+    m_num_sets = p->size/p->block_size/p->assoc;
+    m_assoc = p->assoc;
+    m_last_ref_ptr = new Tick*[m_num_sets];
+    for(unsigned i = 0; i < m_num_sets; i++){
+        m_last_ref_ptr[i] = new Tick[m_assoc];
+        for(unsigned j = 0; j < m_assoc; j++){
+            m_last_ref_ptr[i][j] = 0;
+        }
+    }
+}
+
+AbstractReplacementPolicy *
+ReplacementPolicyParams::create()
+{
+    fatal("Cannot create an AbstractReplacementPolicy");
+    return NULL;
+}
+
+
+
+AbstractReplacementPolicy::~AbstractReplacementPolicy()
+{
+    if (m_last_ref_ptr != NULL){
+        for (unsigned i = 0; i < m_num_sets; i++){
+            if (m_last_ref_ptr[i] != NULL){
+                delete[] m_last_ref_ptr[i];
+            }
+        }
+        delete[] m_last_ref_ptr;
+    }
+}
+
+Tick
+AbstractReplacementPolicy::getLastAccess(int64 set, int64 way)
+{
+    return m_last_ref_ptr[set][way];
+}