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diff --git a/src/arch/power/isa.hh b/src/arch/power/isa.hh
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+/*
+ * Copyright (c) 2009 The Regents of The University of Michigan
+ * Copyright (c) 2009 The University of Edinburgh
+ * 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: Gabe Black
+ *          Timothy M. Jones
+ */
+
+#ifndef __ARCH_POWER_ISA_HH__
+#define __ARCH_POWER_ISA_HH__
+
+#include "arch/power/registers.hh"
+#include "arch/power/types.hh"
+#include "base/misc.hh"
+
+class ThreadContext;
+class Checkpoint;
+class EventManager;
+
+namespace PowerISA
+{
+
+class ISA
+{
+  protected:
+    MiscReg dummy;
+    MiscReg miscRegs[NumMiscRegs];
+
+  public:
+    void
+    clear()
+    {
+    }
+
+    MiscReg
+    readMiscRegNoEffect(int misc_reg)
+    {
+        fatal("Power does not currently have any misc regs defined\n");
+        return dummy;
+    }
+
+    MiscReg
+    readMiscReg(int misc_reg, ThreadContext *tc)
+    {
+        fatal("Power does not currently have any misc regs defined\n");
+        return dummy;
+    }
+
+    void
+    setMiscRegNoEffect(int misc_reg, const MiscReg &val)
+    {
+        fatal("Power does not currently have any misc regs defined\n");
+    }
+
+    void
+    setMiscReg(int misc_reg, const MiscReg &val, ThreadContext *tc)
+    {
+        fatal("Power does not currently have any misc regs defined\n");
+    }
+
+    int
+    flattenIntIndex(int reg)
+    {
+        return reg;
+    }
+
+    int
+    flattenFloatIndex(int reg)
+    {
+        return reg;
+    }
+
+    void
+    serialize(EventManager *em, std::ostream &os)
+    {
+    }
+
+    void
+    unserialize(EventManager *em, Checkpoint *cp, const std::string &section)
+    {
+    }
+
+    ISA()
+    {
+        clear();
+    }
+};
+
+} // PowerISA namespace
+
+#endif // __ARCH_POWER_ISA_HH__