xref: /gem5/src/arch/x86/isa/formats/cpuid.isa

// Copyright (c) 2008 The Hewlett-Packard Development Company
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// Authors: Gabe Black

output header {{
    class CPUIDInst : public X86ISA::X86StaticInst
    {
      public:
        static const RegIndex foldOBit = 0;
        /// Constructor
        CPUIDInst(const char *_mnemonic, ExtMachInst _machInst,
                OpClass __opClass) :
            X86ISA::X86StaticInst(_mnemonic, _machInst, __opClass)
        {
        }

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

output decoder {{
    std::string CPUIDInst::generateDisassembly(Addr PC,
            const SymbolTable *symtab) const
    {
        std::stringstream response;

        printMnemonic(response, mnemonic);
        ccprintf(response, " ");
        printReg(response, _srcRegIdx[0], machInst.opSize);
        return response.str();
    }
}};

def template CPUIDExecute {{
    Fault %(class_name)s::execute(%(CPU_exec_context)s *xc,
            Trace::InstRecord *traceData) const
    {
        // If the CPUID instruction used a valid function number, this will
        // be set to true. Otherwise, the instruction does nothing.
        bool success;
        %(op_decl)s;
        %(op_rd)s;
        %(code)s;
        if (success) {
            %(op_wb)s;
        }
        return NoFault;
    }
}};

def format CPUIDInst(code, *opt_flags) {{
    iop = InstObjParams(name, Name, 'CPUIDInst', code, opt_flags)
    header_output = BasicDeclare.subst(iop)
    decoder_output = BasicConstructor.subst(iop)
    decode_block = BasicDecode.subst(iop)
    exec_output = CPUIDExecute.subst(iop)
}};