xref: /gem5/src/arch/sparc/isa/formats/mem/mem.isa

////////////////////////////////////////////////////////////////////
//
// Mem instructions
//

output header {{
        /**
         * Base class for integer operations.
         */
        class Mem : public SparcStaticInst
        {
                protected:

                /// Constructor
                Mem(const char *mnem, MachInst _machInst, OpClass __opClass) : SparcStaticInst(mnem, _machInst, __opClass)
                {
                }

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

output decoder {{
        std::string Mem::generateDisassembly(Addr pc, const SymbolTable *symtab) const
        {
                return "Disassembly of integer instruction\n";
        }
}};

def template MemExecute {{
        Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, Trace::InstRecord *traceData) const
        {
                //Attempt to execute the instruction
                try
                {

                        %(op_decl)s;
                        %(op_rd)s;
                        ea_code
                        %(code)s;
                }
                //If we have an exception for some reason,
                //deal with it
                catch(SparcException except)
                {
                        //Deal with exception
                        return No_Fault;
                }

                //Write the resulting state to the execution context
                %(op_wb)s;

                return No_Fault;
        }
}};

// Primary format for integer operate instructions:
def format Mem(code, *opt_flags) {{
        orig_code = code
        cblk = CodeBlock(code)
        iop = InstObjParams(name, Name, 'SparcStaticInst', cblk, opt_flags)
        header_output = BasicDeclare.subst(iop)
        decoder_output = BasicConstructor.subst(iop)
        decode_block = BasicDecodeWithMnemonic.subst(iop)
        exec_output = MemExecute.subst(iop)
        exec_output.replace('ea_code', 'EA = I ? (R1 + SIMM13) : R1 + R2;');
}};

def format Cas(code, *opt_flags) {{
        orig_code = code
        cblk = CodeBlock(code)
        iop = InstObjParams(name, Name, 'SparcStaticInst', cblk, opt_flags)
        header_output = BasicDeclare.subst(iop)
        decoder_output = BasicConstructor.subst(iop)
        decode_block = BasicDecodeWithMnemonic.subst(iop)
        exec_output = MemExecute.subst(iop)
        exec_output.replace('ea_code', 'EA = R1;');
}};