breakpoint.isa (12616:4b463b4dc098) | breakpoint.isa (12789:b28b286fa57d) |
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1// -*- mode:c++ -*- 2 3// Copyright (c) 2010,2018 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 --- 31 unchanged lines hidden (view full) --- 40// 41// Authors: Stephen Hines 42 43//////////////////////////////////////////////////////////////////// 44// 45// Breakpoint instructions 46// 47 | 1// -*- mode:c++ -*- 2 3// Copyright (c) 2010,2018 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 --- 31 unchanged lines hidden (view full) --- 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 Fault execute(ExecContext *, Trace::InstRecord *) const override; 67 68 std::string 69 generateDisassembly(Addr pc, const SymbolTable *symtab) const override; 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(ExecContext *xc, Trace::InstRecord *traceData) const 84 { 85 return std::make_shared<PrefetchAbort>(xc->pcState().pc(), 86 ArmFault::DebugEvent); 87 } 88}}; 89 | |
90def format ArmBkptHlt() {{ 91 decode_block = ''' 92 { 93 if (bits(machInst, 21)) { | 48def format ArmBkptHlt() {{ 49 decode_block = ''' 50 { 51 if (bits(machInst, 21)) { |
94 return new Breakpoint(machInst); | 52 return new BkptInst(machInst); |
95 } else { 96 uint32_t imm16 = (bits(machInst, 19, 8) << 4) | 97 (bits(machInst, 3, 0) << 0); 98 return new Hlt(machInst, imm16); 99 } 100 } 101 ''' 102}}; 103 | 53 } else { 54 uint32_t imm16 = (bits(machInst, 19, 8) << 4) | 55 (bits(machInst, 3, 0) << 0); 56 return new Hlt(machInst, imm16); 57 } 58 } 59 ''' 60}}; 61 |