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diff --git a/src/sim/sim_events.hh b/src/sim/sim_events.hh
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+/*
+ * Copyright (c) 2002-2005 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.
+ *
+ * Authors: Nathan Binkert
+ */
+
+#ifndef __SIM_SIM_EVENTS_HH__
+#define __SIM_SIM_EVENTS_HH__
+
+#include "sim/eventq.hh"
+
+//
+// Event to terminate simulation at a particular cycle/instruction
+//
+class SimLoopExitEvent : public Event
+{
+  private:
+    // string explaining why we're terminating
+    std::string cause;
+    int code;
+
+  public:
+    SimLoopExitEvent(Tick _when, const std::string &_cause, int c = 0)
+        : Event(&mainEventQueue, Sim_Exit_Pri), cause(_cause),
+          code(c)
+    { setFlags(IsExitEvent); schedule(_when); }
+
+    SimLoopExitEvent(EventQueue *q,
+                     Tick _when, const std::string &_cause, int c = 0)
+        : Event(q, Sim_Exit_Pri), cause(_cause), code(c)
+    { setFlags(IsExitEvent); schedule(_when); }
+
+    std::string getCause() { return cause; }
+    int getCode() { return code; }
+
+    void process();	// process event
+
+    virtual const char *description();
+};
+
+//
+// Event class to terminate simulation after 'n' related events have
+// occurred using a shared counter: used to terminate when *all*
+// threads have reached a particular instruction count
+//
+class CountedExitEvent : public Event
+{
+  private:
+    std::string cause;	// string explaining why we're terminating
+    int &downCounter;	// decrement & terminate if zero
+
+  public:
+    CountedExitEvent(EventQueue *q, const std::string &_cause,
+                     Tick _when, int &_downCounter);
+
+    void process();	// process event
+
+    virtual const char *description();
+};
+
+//
+// Event to check swap usage
+//
+class CheckSwapEvent : public Event
+{
+  private:
+    int interval;
+
+  public:
+    CheckSwapEvent(EventQueue *q, int ival)
+        : Event(q), interval(ival)
+    { schedule(curTick + interval); }
+
+    void process();	// process event
+
+    virtual const char *description();
+};
+
+//
+// Progress event: print out cycle every so often so we know we're
+// making forward progress.
+//
+class ProgressEvent : public Event
+{
+  protected:
+    Tick interval;
+
+  public:
+    ProgressEvent(EventQueue *q, Tick ival)
+        : Event(q), interval(ival)
+    { schedule(curTick + interval); }
+
+    void process();	// process event
+
+    virtual const char *description();
+};
+
+#endif  // __SIM_SIM_EVENTS_HH__