src/arch/power/isa/formats/basic.isa

// -*- mode:c++ -*-

// Copyright (c) 2009 The University of Edinburgh
// All rights reserved.
//
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// modification, are permitted provided that the following conditions are
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// redistributions in binary form must reproduce the above copyright
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// 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
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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//
// Authors: Timothy M. Jones

// Basic instruction class declaration template.
def template BasicDeclare {{
        /**
         * Static instruction class for "%(mnemonic)s".
         */
        class %(class_name)s : public %(base_class)s
        {
          public:
                /// Constructor.
                %(class_name)s(ExtMachInst machInst);
                Fault execute(ExecContext *,
                              Trace::InstRecord *) const override;
        };
}};

// Basic instruction class constructor template.
def template BasicConstructor {{
        %(class_name)s::%(class_name)s(ExtMachInst machInst)  : %(base_class)s("%(mnemonic)s", machInst, %(op_class)s)
        {
                %(constructor)s;
        }
}};


// Basic instruction class execute method template.
def template BasicExecute {{
        Fault %(class_name)s::execute(
            ExecContext *xc, Trace::InstRecord *traceData) const
        {
                Fault fault = NoFault;

                %(op_decl)s;
                %(op_rd)s;
                %(code)s;

                if (fault == NoFault)
                {
                    %(op_wb)s;
                }

                return fault;
        }
}};

// Basic decode template.
def template BasicDecode {{
        return new %(class_name)s(machInst);
}};

// Basic decode template, passing mnemonic in as string arg to constructor.
def template BasicDecodeWithMnemonic {{
        return new %(class_name)s("%(mnemonic)s", machInst);
}};

// The most basic instruction format...
def format BasicOp(code, *flags) {{
        iop = InstObjParams(name, Name, 'PowerStaticInst', code, flags)
        header_output = BasicDeclare.subst(iop)
        decoder_output = BasicConstructor.subst(iop)
        decode_block = BasicDecode.subst(iop)
        exec_output = BasicExecute.subst(iop)
}};