unknown.isa revision 10474:799c8ee4ecba 
1// Copyright (c) 2007 The Hewlett-Packard Development Company
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3//
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8// licensed hereunder.  You may use the software subject to the license
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12//
13// Copyright (c) 2007 The Regents of The University of Michigan
14// All rights reserved.
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17// modification, are permitted provided that the following conditions are
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27// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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38//
39// Authors: Gabe Black
40
41////////////////////////////////////////////////////////////////////
42//
43// Unknown instructions
44//
45
46output header {{
47        /**
48         * Class for Unknown/Illegal instructions
49         */
50        class Unknown : public X86ISA::X86StaticInst
51        {
52          public:
53
54            // Constructor
55            Unknown(ExtMachInst _machInst) :
56                    X86ISA::X86StaticInst("unknown", _machInst, No_OpClass)
57            {
58            }
59
60            %(BasicExecDeclare)s
61
62            std::string generateDisassembly(Addr pc,
63                    const SymbolTable *symtab) const;
64
65        };
66}};
67
68output decoder {{
69        std::string Unknown::generateDisassembly(Addr pc,
70                const SymbolTable *symtab) const
71        {
72            return "Unknown instruction";
73        }
74}};
75
76output exec {{
77        Fault Unknown::execute(CPU_EXEC_CONTEXT *xc,
78                Trace::InstRecord *traceData) const
79        {
80            return std::make_shared<InvalidOpcode>();
81        }
82}};
83
84def format Unknown() {{
85        decode_block = 'return new Unknown(machInst);\n'
86}};
87