breakpoint.isa revision 10474
1// -*- mode:c++ -*- 2 3// Copyright (c) 2010 ARM Limited 4// All rights reserved 5// 6// The license below extends only to copyright in the software and shall 7// not be construed as granting a license to any other intellectual 8// property including but not limited to intellectual property relating 9// to a hardware implementation of the functionality of the software 10// licensed hereunder. You may use the software subject to the license 11// terms below provided that you ensure that this notice is replicated 12// unmodified and in its entirety in all distributions of the software, 13// modified or unmodified, in source code or in binary form. 14// 15// Copyright (c) 2007-2008 The Florida State University 16// All rights reserved. 17// 18// Redistribution and use in source and binary forms, with or without 19// modification, are permitted provided that the following conditions are 20// met: redistributions of source code must retain the above copyright 21// notice, this list of conditions and the following disclaimer; 22// redistributions in binary form must reproduce the above copyright 23// notice, this list of conditions and the following disclaimer in the 24// documentation and/or other materials provided with the distribution; 25// neither the name of the copyright holders nor the names of its 26// contributors may be used to endorse or promote products derived from 27// this software without specific prior written permission. 28// 29// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 30// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 31// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 32// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 33// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 34// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 35// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 36// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 37// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 38// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 39// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 40// 41// Authors: Stephen Hines 42 43//////////////////////////////////////////////////////////////////// 44// 45// Breakpoint instructions 46// 47 48output header {{ 49 /** 50 * Static instruction class for Breakpoint (illegal) instructions. 51 * These cause simulator termination if they are executed in a 52 * non-speculative mode. This is a leaf class. 53 */ 54 class Breakpoint : public ArmStaticInst 55 { 56 public: 57 /// Constructor 58 Breakpoint(ExtMachInst _machInst) 59 : ArmStaticInst("Breakpoint", _machInst, No_OpClass) 60 { 61 // don't call execute() (which panics) if we're on a 62 // speculative path 63 flags[IsNonSpeculative] = true; 64 } 65 66 %(BasicExecDeclare)s 67 68 std::string 69 generateDisassembly(Addr pc, const SymbolTable *symtab) const; 70 }; 71}}; 72 73output decoder {{ 74 std::string 75 Breakpoint::generateDisassembly(Addr pc, const SymbolTable *symtab) const 76 { 77 return csprintf("%-10s (inst 0x%x)", "Breakpoint", machInst); 78 } 79}}; 80 81output exec {{ 82 Fault 83 Breakpoint::execute(CPU_EXEC_CONTEXT *xc, 84 Trace::InstRecord *traceData) const 85 { 86 return std::make_shared<PrefetchAbort>(xc->pcState().pc(), 87 ArmFault::DebugEvent); 88 } 89}}; 90 91def format Breakpoint() {{ 92 decode_block = 'return new Breakpoint(machInst);\n' 93}}; 94 95