cpuid.isa revision 7087:fb8d5786ff30 
1// Copyright (c) 2008 The Hewlett-Packard Development Company
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3//
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35//
36// Authors: Gabe Black
37
38output header {{
39    class CPUIDInst : public X86ISA::X86StaticInst
40    {
41      public:
42        static const RegIndex foldOBit = 0;
43        /// Constructor
44        CPUIDInst(const char *_mnemonic, ExtMachInst _machInst,
45                OpClass __opClass) :
46            X86ISA::X86StaticInst(_mnemonic, _machInst, __opClass)
47        {
48        }
49
50        std::string generateDisassembly(Addr pc,
51                const SymbolTable *symtab) const;
52    };
53}};
54
55output decoder {{
56    std::string CPUIDInst::generateDisassembly(Addr PC,
57            const SymbolTable *symtab) const
58    {
59        std::stringstream response;
60
61        printMnemonic(response, mnemonic);
62        ccprintf(response, " ");
63        printReg(response, _srcRegIdx[0], machInst.opSize);
64        return response.str();
65    }
66}};
67
68def template CPUIDExecute {{
69    Fault %(class_name)s::execute(%(CPU_exec_context)s *xc,
70            Trace::InstRecord *traceData) const
71    {
72        // If the CPUID instruction used a valid function number, this will
73        // be set to true. Otherwise, the instruction does nothing.
74        bool success;
75        %(op_decl)s;
76        %(op_rd)s;
77        %(code)s;
78        if (success) {
79            %(op_wb)s;
80        }
81        return NoFault;
82    }
83}};
84
85def format CPUIDInst(code, *opt_flags) {{
86    iop = InstObjParams(name, Name, 'CPUIDInst', code, opt_flags)
87    header_output = BasicDeclare.subst(iop)
88    decoder_output = BasicConstructor.subst(iop)
89    decode_block = BasicDecode.subst(iop)
90    exec_output = CPUIDExecute.subst(iop)
91}};
92
93