cpuid.isa revision 5659:f4b9c344d1ca 
1// Copyright (c) 2008 The Hewlett-Packard Development Company
2// All rights reserved.
3//
4// Redistribution and use of this software in source and binary forms,
5// with or without modification, are permitted provided that the
6// following conditions are met:
7//
8// The software must be used only for Non-Commercial Use which means any
9// use which is NOT directed to receiving any direct monetary
10// compensation for, or commercial advantage from such use.  Illustrative
11// examples of non-commercial use are academic research, personal study,
12// teaching, education and corporate research & development.
13// Illustrative examples of commercial use are distributing products for
14// commercial advantage and providing services using the software for
15// commercial advantage.
16//
17// If you wish to use this software or functionality therein that may be
18// covered by patents for commercial use, please contact:
19//     Director of Intellectual Property Licensing
20//     Office of Strategy and Technology
21//     Hewlett-Packard Company
22//     1501 Page Mill Road
23//     Palo Alto, California  94304
24//
25// Redistributions of source code must retain the above copyright notice,
26// this list of conditions and the following disclaimer.  Redistributions
27// in binary form must reproduce the above copyright notice, this list of
28// conditions and the following disclaimer in the documentation and/or
29// other materials provided with the distribution.  Neither the name of
30// the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its
31// contributors may be used to endorse or promote products derived from
32// this software without specific prior written permission.  No right of
33// sublicense is granted herewith.  Derivatives of the software and
34// output created using the software may be prepared, but only for
35// Non-Commercial Uses.  Derivatives of the software may be shared with
36// others provided: (i) the others agree to abide by the list of
37// conditions herein which includes the Non-Commercial Use restrictions;
38// and (ii) such Derivatives of the software include the above copyright
39// notice to acknowledge the contribution from this software where
40// applicable, this list of conditions and the disclaimer below.
41//
42// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
43// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
44// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
45// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
46// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
47// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
48// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
49// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
50// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
51// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
52// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
53//
54// Authors: Gabe Black
55
56output header {{
57    class CPUIDInst : public X86ISA::X86StaticInst
58    {
59      public:
60        static const RegIndex foldOBit = 0;
61        /// Constructor
62        CPUIDInst(const char *_mnemonic, ExtMachInst _machInst,
63                OpClass __opClass) :
64            X86ISA::X86StaticInst(_mnemonic, _machInst, __opClass)
65        {
66        }
67
68        std::string generateDisassembly(Addr pc,
69                const SymbolTable *symtab) const;
70    };
71}};
72
73output decoder {{
74    std::string CPUIDInst::generateDisassembly(Addr PC,
75            const SymbolTable *symtab) const
76    {
77        std::stringstream response;
78
79        printMnemonic(response, mnemonic);
80        ccprintf(response, " ");
81        printReg(response, _srcRegIdx[0], machInst.opSize);
82        return response.str();
83    }
84}};
85
86def template CPUIDExecute {{
87    Fault %(class_name)s::execute(%(CPU_exec_context)s *xc,
88            Trace::InstRecord *traceData) const
89    {
90        // If the CPUID instruction used a valid function number, this will
91        // be set to true. Otherwise, the instruction does nothing.
92        bool success;
93        %(op_decl)s;
94        %(op_rd)s;
95        %(code)s;
96        if (success) {
97            %(op_wb)s;
98        }
99        return NoFault;
100    }
101}};
102
103def format CPUIDInst(code, *opt_flags) {{
104    iop = InstObjParams(name, Name, 'CPUIDInst', code, opt_flags)
105    header_output = BasicDeclare.subst(iop)
106    decoder_output = BasicConstructor.subst(iop)
107    decode_block = BasicDecode.subst(iop)
108    exec_output = CPUIDExecute.subst(iop)
109}};
110
111