arch/mips/isa/formats/trap.isa

   1 ////////////////////////////////////////////////////////////////////
   2 //
   3 // Trap instructions
   4 //
   5
   6 output header {{
   7         /**
   8          * Base class for integer operations.
   9          */
  10         class Trap : public MipsStaticInst
  11         {
  12                 protected:
  13
  14                 /// Constructor
  15                 Trap(const char *mnem, MachInst _machInst, OpClass __opClass) : MipsStaticInst(mnem, _machInst, __opClass)
  16                 {
  17                 }
  18
  19                 std::string generateDisassembly(Addr pc, const SymbolTable *symtab) const;
  20         };
  21 }};
  22
  23 output decoder {{
  24         std::string Trap::generateDisassembly(Addr pc, const SymbolTable *symtab) const
  25         {
  26                 return "Disassembly of integer instruction\n";
  27         }
  28 }};
  29
  30 def template TrapExecute {{
  31         Fault %(class_name)s::execute(%(CPU_exec_context)s *xc, Trace::InstRecord *traceData) const
  32         {
  33                 //Call into the trap handler with the appropriate fault
  34                 return No_Fault;
  35         }
  36
  37                 //Write the resulting state to the execution context
  38                 %(op_wb)s;
  39
  40                 return No_Fault;
  41         }
  42 }};
  43
  44 // Primary format for integer operate instructions:
  45 def format Trap(code, *flags) {{
  46         code = 'bool cond;\n' + code;
  47         iop = InstObjParams(name, Name, 'MipsStaticInst', CodeBlock(code), flags)
  48         header_output = BasicDeclare.subst(iop)
  49         decoder_output = BasicConstructor.subst(iop)
  50         decode_block = BasicDecode.subst(iop)
  51         exec_output = BasicExecute.subst(iop)
  52 }};