micro.isa

来自「M5,一个功能强大的多处理器系统模拟器.很多针对处理器架构,性能的研究都使用它作」· ISA 代码 · 共 106 行

//This delcares the initiateAcc function in memory operations
def template MacroInitiateAcc {{
    Fault initiateAcc(%(CPU_exec_context)s *, Trace::InstRecord *) const
    {
        panic("Tried to execute a macroop directly!\n");
        return NoFault;
    }
}};

def template MacroCompleteAcc {{
    Fault completeAcc(PacketPtr, %(CPU_exec_context)s *,
            Trace::InstRecord *) const
    {
        panic("Tried to execute a macroop directly!\n");
        return NoFault;
    }
}};

//This template provides the execute functions for a store
def template MacroExecute {{
    Fault execute(%(CPU_exec_context)s *, Trace::InstRecord *) const
    {
        panic("Tried to execute a macroop directly!\n");
        return NoFault;
    }
}};

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 microPC)
            {
                assert(microPC < numMicroops);
                return microops[microPC];
            }

            %(MacroExecute)s
            %(MacroInitiateAcc)s
            %(MacroCompleteAcc)s
        };

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

        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();
        }

}};