1// -*- mode:c++ -*-
2
3// Copyright (c) 2003-2005 The Regents of The University of Michigan
4// All rights reserved.
5//
6// Redistribution and use in source and binary forms, with or without
7// modification, are permitted provided that the following conditions are
8// met: redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer;
10// redistributions in binary form must reproduce the above copyright
11// notice, this list of conditions and the following disclaimer in the
12// documentation and/or other materials provided with the distribution;
13// neither the name of the copyright holders nor the names of its
14// contributors may be used to endorse or promote products derived from
15// this software without specific prior written permission.
16//
17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
18// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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20// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28//
29// Authors: Kevin Lim
30
31////////////////////////////////////////////////////////////////////
32//
33// OPCDEC fault instructions
34//
35
36output header {{
37    /**
38     * Static instruction class for instructions that cause an OPCDEC fault
39     * when executed.  This is currently only for PAL mode instructions
40     * executed in non-PAL mode.
41     */
42    class OpcdecFault : public AlphaStaticInst
43    {
44      public:
45        /// Constructor
46        OpcdecFault(ExtMachInst _machInst)
47            : AlphaStaticInst("opcdec fault", _machInst, No_OpClass)
48        {
49        }
50
51        Fault execute(ExecContext *, Trace::InstRecord *) const override;
52
53        std::string generateDisassembly(
54                Addr pc, const SymbolTable *symtab) const override;
55    };
56}};
57
58output decoder {{
59    std::string
60    OpcdecFault::generateDisassembly(Addr pc, const SymbolTable *symtab) const
61    {
62        return csprintf("%-10s (inst 0x%x, opcode 0x%x)",
63                        " OPCDEC fault", machInst, OPCODE);
64    }
65}};
66
67output exec {{
68    Fault
69    OpcdecFault::execute(ExecContext *xc, Trace::InstRecord *traceData) const
70    {
71        return std::make_shared<UnimplementedOpcodeFault>();
72    }
73}};
74
75def format OpcdecFault() {{
76    decode_block = 'return new OpcdecFault(machInst);\n'
77}};
78
79