opcdec.isa revision 2632:1bb2f91485ea 
1// -*- mode:c++ -*-
2
3// Copyright (c) 2003-2005 The Regents of The University of Michigan
4// All rights reserved.
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28
29output header {{
30    /**
31     * Static instruction class for instructions that cause an OPCDEC fault
32     * when executed.  This is currently only for PAL mode instructions
33     * executed in non-PAL mode.
34     */
35    class OpcdecFault : public AlphaStaticInst
36    {
37      public:
38        /// Constructor
39        OpcdecFault(ExtMachInst _machInst)
40            : AlphaStaticInst("opcdec fault", _machInst, No_OpClass)
41        {
42        }
43
44        %(BasicExecDeclare)s
45
46        std::string
47        generateDisassembly(Addr pc, const SymbolTable *symtab) const;
48    };
49}};
50
51output decoder {{
52    std::string
53    OpcdecFault::generateDisassembly(Addr pc, const SymbolTable *symtab) const
54    {
55        return csprintf("%-10s (inst 0x%x, opcode 0x%x)",
56                        " OPCDEC fault", machInst, OPCODE);
57    }
58}};
59
60output exec {{
61    Fault
62    OpcdecFault::execute(%(CPU_exec_context)s *xc,
63                     Trace::InstRecord *traceData) const
64    {
65        return new UnimplementedOpcodeFault;
66    }
67}};
68
69def format OpcdecFault() {{
70    decode_block = 'return new OpcdecFault(machInst);\n'
71}};
72
73