UnwindAssemblyInstEmulation.cpp revision 061b79dbf1fefaf157d414747e98a463a0f32eda
1f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//===-- UnwindAssemblyInstEmulation.cpp --------------------------*- C++ -*-===// 2f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// 3f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// The LLVM Compiler Infrastructure 4f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// 5f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// This file is distributed under the University of Illinois Open Source 6f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// License. See LICENSE.TXT for details. 7f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// 8f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//===----------------------------------------------------------------------===// 9f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 10f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "UnwindAssemblyInstEmulation.h" 11f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 12f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "llvm-c/EnhancedDisassembly.h" 13f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 14f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Core/Address.h" 15f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Core/ArchSpec.h" 16888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton#include "lldb/Core/DataBufferHeap.h" 17888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton#include "lldb/Core/Disassembler.h" 18888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton#include "lldb/Core/Error.h" 19f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Core/PluginManager.h" 20888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton#include "lldb/Core/StreamFile.h" 21f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Target/ExecutionContext.h" 22f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Target/Process.h" 23f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Target/Thread.h" 24f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Target/Target.h" 25f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 26f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonusing namespace lldb; 27f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonusing namespace lldb_private; 28f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 29f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 30f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 31f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//----------------------------------------------------------------------------------------------- 32f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// UnwindAssemblyParser_x86 method definitions 33f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//----------------------------------------------------------------------------------------------- 34f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 35f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 36888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly (AddressRange& range, 37888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Thread& thread, 38888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton UnwindPlan& unwind_plan) 39f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 40888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton#if 0 41888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton UnwindPlan::Row row; 42888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton UnwindPlan::Row::RegisterLocation regloc; 43888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 44888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_unwind_plan_sp->SetRegisterKind (eRegisterKindGeneric); 45888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton row.SetCFARegister (LLDB_REGNUM_GENERIC_FP); 46888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton row.SetCFAOffset (2 * 8); 47888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton row.SetOffset (0); 48888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 49888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton regloc.SetAtCFAPlusOffset (2 * -8); 50888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton row.SetRegisterInfo (LLDB_REGNUM_GENERIC_FP, regloc); 51888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton regloc.SetAtCFAPlusOffset (1 * -8); 52888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton row.SetRegisterInfo (LLDB_REGNUM_GENERIC_PC, regloc); 53888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton regloc.SetIsCFAPlusOffset (0); 54888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton row.SetRegisterInfo (LLDB_REGNUM_GENERIC_SP, regloc); 55888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 56888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_unwind_plan_sp->AppendRow (row); 57888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_unwind_plan_sp->SetSourceName ("x86_64 architectural default"); 58888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton#endif 59888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 60888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton if (range.GetByteSize() > 0 && 61888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton range.GetBaseAddress().IsValid() && 62888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_inst_emulator_ap.get()) 63888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 64888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton#if 0 65888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Target &target = thread.GetProcess().GetTarget(); 66888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const ArchSpec &target_arch = target.GetArchitecture(); 67888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton bool prefer_file_cache = true; 68888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Error error; 69888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton DataBufferHeap data_buffer (range.GetByteSize(), 0); 70888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton if (target.ReadMemory (range.GetBaseAddress(), 71888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton prefer_file_cache, 72888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton data_buffer.GetBytes(), 73888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton data_buffer.GetByteSize(), 74888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton error) == data_buffer.GetByteSize()) 75888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 76888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton DataExtractor data (data_buffer.GetBytes(), 77888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton data_buffer.GetByteSize(), 78888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton target_arch.GetByteOrder(), 79888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton target_arch.GetAddressByteSize()); 80888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 81888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton#endif 82888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton StreamFile strm (stdout, false); 83888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 84888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton ExecutionContext exe_ctx; 85888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton thread.CalculateExecutionContext(exe_ctx); 86888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton DisassemblerSP disasm_sp (Disassembler::DisassembleRange (m_arch, 87888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton NULL, 88888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton exe_ctx, 89888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton range)); 90888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton if (disasm_sp) 91888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 92888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 93888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_range_ptr = ⦥ 94888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_thread_ptr = &thread; 95888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_unwind_plan_ptr = &unwind_plan; 96888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 97888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const uint32_t addr_byte_size = m_arch.GetAddressByteSize(); 98888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const bool show_address = true; 99888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const bool show_bytes = true; 100888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const bool raw = false; 101888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton // Initialize the stack pointer with a known value. In the 32 bit case 102888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton // it will be 0x80000000, and in the 64 bit case 0x8000000000000000. 103888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton // We use the address byte size to be safe for any future addresss sizes 104c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton RegisterInfo sp_reg_info; 105c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton m_inst_emulator_ap->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_SP, sp_reg_info); 106061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton m_initial_sp = (1ull << ((addr_byte_size * 8) - 1)); 107061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton SetRegisterValue(sp_reg_info, m_initial_sp); 108888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 109888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const InstructionList &inst_list = disasm_sp->GetInstructionList (); 110888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const size_t num_instructions = inst_list.GetSize(); 1113063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton if (num_instructions > 0) 112888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 1133063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton Instruction *inst = inst_list.GetInstructionAtIndex (0).get(); 1143063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton const addr_t base_addr = inst->GetAddress().GetFileAddress(); 115888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 1163063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton for (size_t idx=0; idx<num_instructions; ++idx) 1173063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 1183063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst = inst_list.GetInstructionAtIndex (idx).get(); 1193063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton if (inst) 1203063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 1213063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_curr_row.Clear(); 1223063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst->Dump(&strm, inst_list.GetMaxOpcocdeByteSize (), show_address, show_bytes, &exe_ctx, raw); 1233063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton strm.EOL(); 1243063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 1253063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_inst_emulator_ap->SetInstruction (inst->GetOpcode(), 1263063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst->GetAddress(), 1273063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton exe_ctx.target); 1283063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_curr_row.SetOffset (inst->GetAddress().GetFileAddress() + inst->GetOpcode().GetByteSize() - base_addr); 1293063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 1303063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_inst_emulator_ap->EvaluateInstruction (eEmulateInstructionOptionIgnoreConditions); 1313063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 132888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 133888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 134888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 135888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 136f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 137f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 138f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 139f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 140888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::GetFastUnwindPlan (AddressRange& func, 141888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Thread& thread, 142888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton UnwindPlan &unwind_plan) 143f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 144f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 145f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 146f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 147f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 148888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::FirstNonPrologueInsn (AddressRange& func, 149888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Target& target, 150888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Thread* thread, 151888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Address& first_non_prologue_insn) 152f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 153f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 154f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 155f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 1568badcb2503ed2e2884a48f66099c1d48494817f4Greg ClaytonUnwindAssembly * 157f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::CreateInstance (const ArchSpec &arch) 158f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 159061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton std::auto_ptr<EmulateInstruction> inst_emulator_ap (EmulateInstruction::FindPlugin (arch, eInstructionTypePrologueEpilogue, NULL)); 160888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton // Make sure that all prologue instructions are handled 161888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton if (inst_emulator_ap.get()) 162888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return new UnwindAssemblyInstEmulation (arch, inst_emulator_ap.release()); 163f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return NULL; 164f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 165f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 166f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 167f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//------------------------------------------------------------------ 168f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// PluginInterface protocol in UnwindAssemblyParser_x86 169f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//------------------------------------------------------------------ 170f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 171f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 172f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginName() 173f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 174f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "UnwindAssemblyInstEmulation"; 175f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 176f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 177f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 178f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetShortPluginName() 179f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 180f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "unwindassembly.inst-emulation"; 181f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 182f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 183f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 184f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonuint32_t 185f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginVersion() 186f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 187f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return 1; 188f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 189f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 190f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonvoid 191f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::Initialize() 192f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 193f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton PluginManager::RegisterPlugin (GetPluginNameStatic(), 194f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton GetPluginDescriptionStatic(), 195f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton CreateInstance); 196f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 197f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 198f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonvoid 199f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::Terminate() 200f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 201f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton PluginManager::UnregisterPlugin (CreateInstance); 202f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 203f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 204f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 205f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 206f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginNameStatic() 207f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 208f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "UnwindAssemblyInstEmulation"; 209f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 210f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 211f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 212f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginDescriptionStatic() 213f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 214f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "Instruction emulation based unwind information."; 215f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 216888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 217888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 218c07d451bb046e47215bd73fda0235362cc6b1a47Greg Claytonuint64_t 219061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::MakeRegisterKindValuePair (const RegisterInfo ®_info) 220c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 221c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton uint32_t reg_kind, reg_num; 222061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (EmulateInstruction::GetBestRegisterKindAndNumber (®_info, reg_kind, reg_num)) 223c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton return (uint64_t)reg_kind << 24 | reg_num; 224c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton return 0ull; 225c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 226c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 227c07d451bb046e47215bd73fda0235362cc6b1a47Greg Claytonvoid 228061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::SetRegisterValue (const RegisterInfo ®_info, const RegisterValue ®_value) 229c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 230c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton m_register_values[MakeRegisterKindValuePair (reg_info)] = reg_value; 231c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 232c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 233061b79dbf1fefaf157d414747e98a463a0f32edaGreg Claytonbool 234061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::GetRegisterValue (const RegisterInfo ®_info, RegisterValue ®_value) 235c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 236c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton const uint64_t reg_id = MakeRegisterKindValuePair (reg_info); 237c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton RegisterValueMap::const_iterator pos = m_register_values.find(reg_id); 238c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton if (pos != m_register_values.end()) 239061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton { 240061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value = pos->second; 241061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return true; // We had a real value that comes from an opcode that wrote 242061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton // to it... 243061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton } 244061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton // We are making up a value that is recognizable... 245061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value.SetUInt(reg_id, reg_info.byte_size); 246061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return false; 247c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 248c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 249888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 250888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonsize_t 251888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::ReadMemory (EmulateInstruction *instruction, 252888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 253888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 254888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton lldb::addr_t addr, 255888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *dst, 256888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton size_t dst_len) 257888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 258888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton //UnwindAssemblyInstEmulation *inst_emulator = (UnwindAssemblyInstEmulation *)baton; 259c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton printf ("UnwindAssemblyInstEmulation::ReadMemory (addr = 0x%16.16llx, dst = %p, dst_len = %zu, context = ", 260888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton addr, 261888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton dst, 262888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton dst_len); 263c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton context.Dump(stdout, instruction); 264888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return dst_len; 265888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 266888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 267888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonsize_t 268888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction, 269888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 270888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 271888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton lldb::addr_t addr, 272888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const void *dst, 273888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton size_t dst_len) 274888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 2753063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton UnwindAssemblyInstEmulation *inst_emulator = (UnwindAssemblyInstEmulation *)baton; 276888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 277888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton DataExtractor data (dst, 278888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton dst_len, 279888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton instruction->GetArchitecture ().GetByteOrder(), 280888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton instruction->GetArchitecture ().GetAddressByteSize()); 281888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton StreamFile strm(stdout, false); 282888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 283c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton strm.PutCString ("UnwindAssemblyInstEmulation::WriteMemory ("); 284888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton data.Dump(&strm, 0, eFormatBytes, 1, dst_len, UINT32_MAX, addr, 0, 0); 285c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton strm.PutCString (", context = "); 286c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton context.Dump(stdout, instruction); 2873063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 2883063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton switch (context.type) 2893063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 290061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton default: 2913063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextInvalid: 2923063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextReadOpcode: 2933063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextImmediate: 2943063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustBaseRegister: 2953063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterPlusOffset: 2963063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustPC: 2973063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterStore: 2983063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterLoad: 2993063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRelativeBranchImmediate: 3003063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAbsoluteBranchRegister: 3013063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextSupervisorCall: 3023063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextTableBranchReadMemory: 3033063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextWriteRegisterRandomBits: 3043063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextWriteMemoryRandomBits: 3053063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextArithmetic: 3063063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdvancePC: 3073063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextReturnFromException: 3083063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextPopRegisterOffStack: 3093063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustStackPointer: 310061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton assert (!"unhandled case, add code to handle this!"); 3113063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 3123063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 3133063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextPushRegisterOnStack: 3143063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton switch (context.info_type) 3153063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 3163063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eInfoTypeRegisterToRegisterPlusOffset: 3173063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 3183063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton UnwindPlan::Row::RegisterLocation regloc; 3193063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton const uint32_t dwarf_reg_num = context.info.RegisterToRegisterPlusOffset.data_reg.kinds[eRegisterKindDWARF]; 320061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton //const addr_t reg_cfa_offset = inst_emulator->m_curr_row.GetCFAOffset() + context.info.RegisterToRegisterPlusOffset.offset; 321061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton regloc.SetAtCFAPlusOffset (addr - inst_emulator->m_initial_sp); 3223063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst_emulator->m_curr_row.SetRegisterInfo (dwarf_reg_num, regloc); 3233063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 3243063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 3253063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 3263063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton default: 3273063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton assert (!"unhandled case, add code to handle this!"); 3283063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 3293063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 3303063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 3313063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 3323063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 3333063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 334888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return dst_len; 335888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 336888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 337888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonbool 338888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction, 339888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 340061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterInfo *reg_info, 341061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton RegisterValue ®_value) 342888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 343061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (baton && reg_info) 344061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton { 345061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton UnwindAssemblyInstEmulation *inst_emulator = (UnwindAssemblyInstEmulation *)baton; 346061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton bool synthetic = inst_emulator->GetRegisterValue (*reg_info, reg_value); 347888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 348061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton StreamFile strm (stdout, false); 349061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::ReadRegister (name = \"%s\") => synthetic_value = %i, value = ", reg_info->name, synthetic); 350061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value.Dump(&strm, reg_info, false, eFormatDefault); 351061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton strm.EOL(); 352061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton } 353888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return true; 354888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 355888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 356888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonbool 357888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction, 358888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 359888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 360061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterInfo *reg_info, 361061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterValue ®_value) 362888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 363061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (!baton || !reg_info) 364061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return false; 365061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton 366888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton UnwindAssemblyInstEmulation *inst_emulator = (UnwindAssemblyInstEmulation *)baton; 367061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton StreamFile strm (stdout, false); 368061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::WriteRegister (name = \"%s\", value = ", reg_info->name); 369061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value.Dump(&strm, reg_info, false, eFormatDefault); 370061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton strm.PutCString (", context = "); 371c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton context.Dump(stdout, instruction); 372c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 373061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton inst_emulator->SetRegisterValue (*reg_info, reg_value); 374888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 375888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton switch (context.type) 376888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 377061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton default: 378888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextInvalid: 379888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextReadOpcode: 380888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextImmediate: 381888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustBaseRegister: 382888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterPlusOffset: 383888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustPC: 384888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterStore: 385888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterLoad: 386888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRelativeBranchImmediate: 387888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAbsoluteBranchRegister: 388888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextSupervisorCall: 389888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextTableBranchReadMemory: 390888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextWriteRegisterRandomBits: 391888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextWriteMemoryRandomBits: 392c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton case EmulateInstruction::eContextArithmetic: 393888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdvancePC: 394888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextReturnFromException: 395888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextPushRegisterOnStack: 396061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton assert (!"unhandled case, add code to handle this!"); 397888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 3983063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 399888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextPopRegisterOffStack: 4003063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 4013063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton switch (context.info_type) 4023063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 4033063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eInfoTypeRegisterPlusOffset: 4043063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 405061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const uint32_t dwarf_reg_num = reg_info->kinds[eRegisterKindDWARF]; 4063063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton UnwindPlan::Row::RegisterLocation regloc; 4073063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton regloc.SetSame(); 4083063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst_emulator->m_curr_row.SetRegisterInfo (dwarf_reg_num, regloc); 4093063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 4103063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 4113063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 4123063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton default: 4133063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton assert (!"unhandled case, add code to handle this!"); 4143063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 4153063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 4163063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 417888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 418888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 419888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustStackPointer: 420061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton inst_emulator->m_curr_row.SetCFAOffset (reg_value.GetAsUInt64() - inst_emulator->m_initial_sp); 421888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 422888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 423888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return true; 424888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 425888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 426888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 427