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diff --git a/src/arch/sparc/insts/nop.cc b/src/arch/sparc/insts/nop.cc
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+++ b/src/arch/sparc/insts/nop.cc
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+// Copyright (c) 2006-2007 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: Gabe Black
+//          Steve Reinhardt
+
+////////////////////////////////////////////////////////////////////
+//
+// Nop instruction
+//
+
+// Per-cpu-model nop execute method.
+def template NopExec {{
+}};
+
+output header {{
+        /**
+         * Nop class.
+         */
+        class Nop : public SparcStaticInst
+        {
+          public:
+            // Constructor
+            Nop(const char *mnem, ExtMachInst _machInst, OpClass __opClass) :
+                SparcStaticInst(mnem, _machInst, __opClass)
+            {
+                flags[IsNop] = true;
+            }
+
+            Fault
+            execute(ExecContext *xc, Trace::InstRecord *traceData) const
+            {
+                return NoFault;
+            }
+
+            std::string generateDisassembly(Addr pc,
+                    const SymbolTable *symtab) const;
+        };
+}};
+
+output decoder {{
+        std::string Nop::generateDisassembly(Addr pc,
+                const SymbolTable *symtab) const
+        {
+            std::stringstream response;
+            printMnemonic(response, mnemonic);
+            return response.str();
+        }
+}};
+
+def template NopExecute {{
+        Fault %(class_name)s::execute(ExecContext *xc,
+                Trace::InstRecord *traceData) const
+        {
+            // Nothing to see here, move along
+            return NoFault;
+        }
+}};
+
+// Primary format for integer operate instructions:
+def format Nop(code, *opt_flags) {{
+        iop = InstObjParams(name, Name, 'Nop', code, opt_flags)
+        header_output = BasicDeclare.subst(iop)
+        decoder_output = BasicConstructor.subst(iop)
+        decode_block = BasicDecode.subst(iop)
+        exec_output = NopExecute.subst(iop)
+}};