unknown.isa revision 2495
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 29output header {{ 30 std::string inst2string(MachInst machInst); 31}}; 32output decoder {{ 33 34std::string inst2string(MachInst machInst) 35{ 36 string str = ""; 37 uint32_t mask = 0x80000000; 38 39 for(int i=0; i < 32; i++) { 40 if ((machInst & mask) == 0) { 41 str += "0"; 42 } else { 43 str += "1"; 44 } 45 46 mask = mask >> 1; 47 } 48 49 return str; 50} 51 52 std::string 53 Unknown::generateDisassembly(Addr pc, const SymbolTable *symtab) const 54 { 55 return csprintf("%-10s (inst 0x%x, opcode 0x%x, binary:%s)", 56 "unknown", machInst, OPCODE, inst2string(machInst)); 57 } 58}}; 59 60output exec {{ 61 Fault 62 Unknown::execute(%(CPU_exec_context)s *xc, 63 Trace::InstRecord *traceData) const 64 { 65 panic("attempt to execute unknown instruction " 66 "(inst 0x%08x, opcode 0x%x, binary: %s)", machInst, OPCODE, inst2string(machInst)); 67 return new UnimplementedOpcodeFault; 68 } 69}}; 70 71def format Unknown() {{ 72 decode_block = 'return new Unknown(machInst);\n' 73}}; 74 75