src/arch/mips/isa/formats/trap.isa

   1 // -*- mode:c++ -*-
   2
   3 // Copyright (c) 2006 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
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   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
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  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,
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  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: Korey Sewell
  30
  31 ////////////////////////////////////////////////////////////////////
  32 //
  33 // Trap instructions
  34 //
  35
  36 output header {{
  37         /**
  38          * Base class for integer operations.
  39          */
  40         class Trap : public MipsStaticInst
  41         {
  42                 protected:
  43
  44                 /// Constructor
  45                 Trap(const char *mnem, MachInst _machInst, OpClass __opClass) : MipsStaticInst(mnem, _machInst, __opClass)
  46                 {
  47                 }
  48
  49                 std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
  50         };
  51 }};
  52
  53 output decoder {{
  54         std::string Trap::generateDisassembly(Addr pc, const SymbolTable *symtab) const
  55         {
  56                 return "Disassembly of trap instruction\n";
  57         }
  58 }};
  59
  60 def template TrapExecute {{
  61         //Edit This Template When Traps Are Implemented
  62         Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, Trace::InstRecord *traceData) const
  63         {
  64                 //Write the resulting state to the execution context
  65                 %(op_wb)s;
  66
  67                 //Call into the trap handler with the appropriate fault
  68                 return No_Fault;
  69         }
  70 }};
  71
  72 def format Trap(code, *flags) {{
  73         code = 'warn(\"'
  74         code += 'Trap Exception Handler Is Currently Not Implemented.'
  75         code += '\");'
  76         iop = InstObjParams(name, Name, 'MipsStaticInst', code, flags)
  77         header_output = BasicDeclare.subst(iop)
  78         decoder_output = BasicConstructor.subst(iop)
  79         decode_block = BasicDecode.subst(iop)
  80         exec_output = BasicExecute.subst(iop)
  81 }};