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diff --git a/cpu/o3/store_set.hh b/cpu/o3/store_set.hh
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+/*
+ * Copyright (c) 2004-2005 The Regents of The University of Michigan
+ * 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.
+ */
+
+#ifndef __CPU_BETA_CPU_STORE_SET_HH__
+#define __CPU_BETA_CPU_STORE_SET_HH__
+
+#include <vector>
+
+#include "arch/alpha/isa_traits.hh"
+#include "cpu/inst_seq.hh"
+
+class StoreSet
+{
+  public:
+    typedef unsigned SSID;
+
+  public:
+    StoreSet(int SSIT_size, int LFST_size);
+
+    void violation(Addr store_PC, Addr load_PC);
+
+    void insertLoad(Addr load_PC, InstSeqNum load_seq_num);
+
+    void insertStore(Addr store_PC, InstSeqNum store_seq_num);
+
+    InstSeqNum checkInst(Addr PC);
+
+    void issued(Addr issued_PC, InstSeqNum issued_seq_num, bool is_store);
+
+    void squash(InstSeqNum squashed_num);
+
+    void clear();
+
+  private:
+    inline int calcIndex(Addr PC)
+    { return (PC >> offset_bits) & index_mask; }
+
+    inline SSID calcSSID(Addr PC)
+    { return ((PC ^ (PC >> 10)) % LFST_size); }
+
+    SSID *SSIT;
+
+    std::vector<bool> validSSIT;
+
+    InstSeqNum *LFST;
+
+    std::vector<bool> validLFST;
+
+    int *SSCounters;
+
+    int SSIT_size;
+
+    int LFST_size;
+
+    int index_mask;
+
+    // HACK: Hardcoded for now.
+    int offset_bits;
+};
+
+#endif // __CPU_BETA_CPU_STORE_SET_HH__