opcdec.isa revision 2649:2fb859a457a2
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 19// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 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 25// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29//////////////////////////////////////////////////////////////////// 30// 31// OPCDEC fault instructions 32// 33 34output header {{ 35 /** 36 * Static instruction class for instructions that cause an OPCDEC fault 37 * when executed. This is currently only for PAL mode instructions 38 * executed in non-PAL mode. 39 */ 40 class OpcdecFault : public AlphaStaticInst 41 { 42 public: 43 /// Constructor 44 OpcdecFault(ExtMachInst _machInst) 45 : AlphaStaticInst("opcdec fault", _machInst, No_OpClass) 46 { 47 } 48 49 %(BasicExecDeclare)s 50 51 std::string 52 generateDisassembly(Addr pc, const SymbolTable *symtab) const; 53 }; 54}}; 55 56output decoder {{ 57 std::string 58 OpcdecFault::generateDisassembly(Addr pc, const SymbolTable *symtab) const 59 { 60 return csprintf("%-10s (inst 0x%x, opcode 0x%x)", 61 " OPCDEC fault", machInst, OPCODE); 62 } 63}}; 64 65output exec {{ 66 Fault 67 OpcdecFault::execute(%(CPU_exec_context)s *xc, 68 Trace::InstRecord *traceData) const 69 { 70 return new UnimplementedOpcodeFault; 71 } 72}}; 73 74def format OpcdecFault() {{ 75 decode_block = 'return new OpcdecFault(machInst);\n' 76}}; 77 78