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// Authors: Korey Sewell 30 31//////////////////////////////////////////////////////////////////// 32// 33// Unknown instructions 34// 35 36output header {{
| 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// Authors: Korey Sewell 30 31//////////////////////////////////////////////////////////////////// 32// 33// Unknown instructions 34// 35 36output header {{
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37 std::string inst2string(MachInst machInst); 38}}; 39output decoder {{ 40 41std::string inst2string(MachInst machInst) 42{ 43 string str = ""; 44 uint32_t mask = 0x80000000; 45 46 for(int i=0; i < 32; i++) { 47 if ((machInst & mask) == 0) { 48 str += "0"; 49 } else { 50 str += "1";
| 37 /** 38 * Static instruction class for unknown (illegal) instructions. 39 * These cause simulator termination if they are executed in a 40 * non-speculative mode. This is a leaf class. 41 */ 42 class Unknown : public MipsStaticInst 43 { 44 public: 45 /// Constructor 46 Unknown(MachInst _machInst) 47 : MipsStaticInst("unknown", _machInst, No_OpClass) 48 { 49 // don't call execute() (which panics) if we're on a 50 // speculative path 51 flags[IsNonSpeculative] = true;
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51 } 52
| 52 } 53
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53 mask = mask >> 1; 54 }
| 54 %(BasicExecDeclare)s
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55
| 55
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56 return str; 57}
| 56 std::string 57 generateDisassembly(Addr pc, const SymbolTable *symtab) const; 58 }; 59}};
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58
| 60
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| 61output decoder {{
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59 std::string 60 Unknown::generateDisassembly(Addr pc, const SymbolTable *symtab) const 61 { 62 return csprintf("%-10s (inst 0x%x, opcode 0x%x, binary:%s)", 63 "unknown", machInst, OPCODE, inst2string(machInst)); 64 } 65}}; 66 67output exec {{ 68 Fault 69 Unknown::execute(%(CPU_exec_context)s *xc, 70 Trace::InstRecord *traceData) const 71 { 72 panic("attempt to execute unknown instruction " 73 "(inst 0x%08x, opcode 0x%x, binary: %s)", machInst, OPCODE, inst2string(machInst)); 74 return new UnimplementedOpcodeFault; 75 } 76}}; 77 78def format Unknown() {{ 79 decode_block = 'return new Unknown(machInst);\n' 80}}; 81
| 62 std::string 63 Unknown::generateDisassembly(Addr pc, const SymbolTable *symtab) const 64 { 65 return csprintf("%-10s (inst 0x%x, opcode 0x%x, binary:%s)", 66 "unknown", machInst, OPCODE, inst2string(machInst)); 67 } 68}}; 69 70output exec {{ 71 Fault 72 Unknown::execute(%(CPU_exec_context)s *xc, 73 Trace::InstRecord *traceData) const 74 { 75 panic("attempt to execute unknown instruction " 76 "(inst 0x%08x, opcode 0x%x, binary: %s)", machInst, OPCODE, inst2string(machInst)); 77 return new UnimplementedOpcodeFault; 78 } 79}}; 80 81def format Unknown() {{ 82 decode_block = 'return new Unknown(machInst);\n' 83}}; 84
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