nop.cc

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// Copyright (c) 2006-2007 The Regents of The University of Michigan
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//
// Nop instruction
//
 
// Per-cpu-model nop execute method.
def template NopExec {{
}};
 
output header {{
        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 loader::SymbolTable *symtab) const override;
        };
}};
 
output decoder {{
        std::string
        Nop::generateDisassembly(
                Addr pc, const loader::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)
}};