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diff --git a/src/cpu/trace/trace_cpu.hh b/src/cpu/trace/trace_cpu.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.
+ */
+
+/**
+ * @file
+ * Declaration of a memory trace CPU object. Uses a memory trace to drive the
+ * provided memory hierarchy.
+ */
+
+#ifndef __CPU_TRACE_TRACE_CPU_HH__
+#define __CPU_TRACE_TRACE_CPU_HH__
+
+#include <string>
+
+#include "mem/mem_req.hh" // for MemReqPtr
+#include "sim/eventq.hh" // for Event
+#include "sim/sim_object.hh"
+
+// Forward declaration.
+class MemInterface;
+class MemTraceReader;
+
+/**
+ * A cpu object for running memory traces through a memory hierarchy.
+ */
+class TraceCPU : public SimObject
+{
+  private:
+    /** Interface for instruction trace requests, if any. */
+    MemInterface *icacheInterface;
+    /** Interface for data trace requests, if any. */
+    MemInterface *dcacheInterface;
+
+    /** Data reference trace. */
+    MemTraceReader *dataTrace;
+
+    /** Number of outstanding requests. */
+    int outstandingRequests;
+
+    /** Cycle of the next request, 0 if not available. */
+    Tick nextCycle;
+
+    /** Next request. */
+    MemReqPtr nextReq;
+
+    /**
+     * Event to call the TraceCPU::tick
+     */
+    class TickEvent : public Event
+    {
+      private:
+        /** The associated CPU */
+        TraceCPU *cpu;
+
+      public:
+        /**
+         * Construct this event;
+         */
+        TickEvent(TraceCPU *c);
+
+        /**
+         * Call the tick function.
+         */
+        void process();
+
+        /**
+         * Return a string description of this event.
+         */
+        const char *description();
+    };
+
+    TickEvent tickEvent;
+
+  public:
+    /**
+     * Construct a TraceCPU object.
+     */
+    TraceCPU(const std::string &name,
+             MemInterface *icache_interface,
+             MemInterface *dcache_interface,
+             MemTraceReader *data_trace);
+
+    inline Tick cycles(int numCycles) { return numCycles; }
+
+    /**
+     * Perform all the accesses for one cycle.
+     */
+    void tick();
+
+    /**
+     * Handle a completed memory request.
+     */
+    void completeRequest(MemReqPtr &req);
+};
+
+class TraceCompleteEvent : public Event
+{
+    MemReqPtr req;
+    TraceCPU *tester;
+
+  public:
+
+    TraceCompleteEvent(MemReqPtr &_req, TraceCPU *_tester)
+        : Event(&mainEventQueue), req(_req), tester(_tester)
+    {
+        setFlags(AutoDelete);
+    }
+
+    void process();
+
+    virtual const char *description();
+};
+
+#endif // __CPU_TRACE_TRACE_CPU_HH__
+