src/arch/sparc/isa/formats/micro.isa

// Copyright (c) 2006-2007 The Regents of The University of Michigan
// All rights reserved.
//
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// redistributions in binary form must reproduce the above copyright
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// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// Authors: Gabe Black

output header {{

        class SparcMacroInst : public SparcStaticInst
        {
          protected:
            const uint32_t numMicroops;

            // Constructor.
            SparcMacroInst(const char *mnem, ExtMachInst _machInst,
                    OpClass __opClass, uint32_t _numMicroops)
                        : SparcStaticInst(mnem, _machInst, __opClass),
                        numMicroops(_numMicroops)
            {
                assert(numMicroops);
                microops = new StaticInstPtr[numMicroops];
                flags[IsMacroop] = true;
            }

            ~SparcMacroInst()
            {
                delete [] microops;
            }

            std::string generateDisassembly(Addr pc,
                const SymbolTable *symtab) const;

            StaticInstPtr * microops;

            StaticInstPtr
            fetchMicroop(MicroPC upc) const
            {
                assert(upc < numMicroops);
                return microops[upc];
            }

            Fault
            execute(ExecContext *, Trace::InstRecord *) const
            {
                panic("Tried to execute a macroop directly!\n");
            }

            Fault
            initiateAcc(ExecContext *, Trace::InstRecord *) const
            {
                panic("Tried to execute a macroop directly!\n");
            }

            Fault
            completeAcc(PacketPtr, ExecContext *, Trace::InstRecord *) const
            {
                panic("Tried to execute a macroop directly!\n");
            }
        };

        class SparcMicroInst : public SparcStaticInst
        {
          protected:
            // Constructor.
            SparcMicroInst(const char *mnem,
                    ExtMachInst _machInst, OpClass __opClass)
                        : SparcStaticInst(mnem, _machInst, __opClass)
            {
                flags[IsMicroop] = true;
            }

            void
            advancePC(SparcISA::PCState &pcState) const
            {
                if (flags[IsLastMicroop])
                    pcState.uEnd();
                else
                    pcState.uAdvance();
            }
        };

        class SparcDelayedMicroInst : public SparcMicroInst
        {
          protected:
            // Constructor.
            SparcDelayedMicroInst(const char *mnem,
                    ExtMachInst _machInst, OpClass __opClass)
                        : SparcMicroInst(mnem, _machInst, __opClass)
            {
                flags[IsDelayedCommit] = true;
            }
        };
}};

output decoder {{

        std::string
        SparcMacroInst::generateDisassembly(Addr pc,
                const SymbolTable *symtab) const
        {
            std::stringstream response;

            printMnemonic(response, mnemonic);

            return response.str();
        }

}};