src/arch/sparc/isa/formats/unknown.isa

   1 // Copyright (c) 2006 The Regents of The University of Michigan
   2 // All rights reserved.
   3 //
   4 // Redistribution and use in source and binary forms, with or without
   5 // modification, are permitted provided that the following conditions are
   6 // met: redistributions of source code must retain the above copyright
   7 // notice, this list of conditions and the following disclaimer;
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   9 // notice, this list of conditions and the following disclaimer in the
  10 // documentation and/or other materials provided with the distribution;
  11 // neither the name of the copyright holders nor the names of its
  12 // contributors may be used to endorse or promote products derived from
  13 // this software without specific prior written permission.
  14 //
  15 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  16 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  18 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  19 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  20 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  21 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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  25 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26 //
  27 // Authors: Gabe Black
  28 //          Steve Reinhardt
  29
  30 ////////////////////////////////////////////////////////////////////
  31 //
  32 // Unknown instructions
  33 //
  34
  35 output header {{
  36         /**
  37          * Class for Unknown/Illegal instructions
  38          */
  39         class Unknown : public SparcStaticInst
  40         {
  41           public:
  42
  43             // Constructor
  44             Unknown(ExtMachInst _machInst) :
  45                     SparcStaticInst("unknown", _machInst, No_OpClass)
  46             {
  47             }
  48
  49             %(BasicExecDeclare)s
  50
  51             std::string generateDisassembly(Addr pc,
  52                     const SymbolTable *symtab) const;
  53
  54         };
  55 }};
  56
  57 output decoder {{
  58         std::string Unknown::generateDisassembly(Addr pc,
  59                 const SymbolTable *symtab) const
  60         {
  61             return "Unknown instruction";
  62         }
  63 }};
  64
  65 output exec {{
  66         Fault Unknown::execute(CPU_EXEC_CONTEXT *xc,
  67                 Trace::InstRecord *traceData) const
  68         {
  69             return new IllegalInstruction;
  70         }
  71 }};
  72
  73 def format Unknown() {{
  74         decode_block = 'return new Unknown(machInst);\n'
  75 }};