trap.isa revision 2632:1bb2f91485ea
1//////////////////////////////////////////////////////////////////// 2// 3// Trap instructions 4// 5 6output 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 23output decoder {{ 24 std::string Trap::generateDisassembly(Addr pc, const SymbolTable *symtab) const 25 { 26 return "Disassembly of integer instruction\n"; 27 } 28}}; 29 30def 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: 45def 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}}; 53