UnwindAssemblyInstEmulation.cpp revision 567e7f3ba16eb48cb9fd6a2f26f2f7269eb6983c
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" 1975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton#include "lldb/Core/Log.h" 20f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Core/PluginManager.h" 2175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton#include "lldb/Core/StreamString.h" 22f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Target/ExecutionContext.h" 23f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Target/Process.h" 24f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Target/Thread.h" 25f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Target/Target.h" 26f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 27f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonusing namespace lldb; 28f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonusing namespace lldb_private; 29f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 30f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 31f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 32f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//----------------------------------------------------------------------------------------------- 33f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// UnwindAssemblyParser_x86 method definitions 34f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//----------------------------------------------------------------------------------------------- 35f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 36f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 37888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly (AddressRange& range, 38888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Thread& thread, 39888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton UnwindPlan& unwind_plan) 40f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 41888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton if (range.GetByteSize() > 0 && 42888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton range.GetBaseAddress().IsValid() && 43888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_inst_emulator_ap.get()) 44888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 4575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 4675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // The the instruction emulation subclass setup the unwind plan for the 4775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // first instruction. 4875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_inst_emulator_ap->CreateFunctionEntryUnwind (unwind_plan); 4975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 5075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // CreateFunctionEntryUnwind should have created the first row. If it 5175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // doesn't, then we are done. 5275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (unwind_plan.GetRowCount() == 0) 5375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 54888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 55888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton ExecutionContext exe_ctx; 56888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton thread.CalculateExecutionContext(exe_ctx); 57888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton DisassemblerSP disasm_sp (Disassembler::DisassembleRange (m_arch, 58888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton NULL, 59888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton exe_ctx, 60888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton range)); 6175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 6275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 6375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 64888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton if (disasm_sp) 65888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 66888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 67888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_range_ptr = ⦥ 68888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_thread_ptr = &thread; 69888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_unwind_plan_ptr = &unwind_plan; 70888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 71888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const uint32_t addr_byte_size = m_arch.GetAddressByteSize(); 72888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const bool show_address = true; 73888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const bool show_bytes = true; 74888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const bool raw = false; 7575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // Initialize the CFA with a known value. In the 32 bit case 76888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton // it will be 0x80000000, and in the 64 bit case 0x8000000000000000. 77888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton // We use the address byte size to be safe for any future addresss sizes 7875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_inst_emulator_ap->GetRegisterInfo (unwind_plan.GetRegisterKind(), 7975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.GetInitialCFARegister(), 8075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_cfa_reg_info); 8175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 8275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_fp_is_cfa = false; 8375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_register_values.clear(); 8475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_pushed_regs.clear(); 8575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 86061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton m_initial_sp = (1ull << ((addr_byte_size * 8) - 1)); 872f085c6ca2895663687dca704589478ff040b849Greg Clayton RegisterValue cfa_reg_value; 882f085c6ca2895663687dca704589478ff040b849Greg Clayton cfa_reg_value.SetUInt (m_initial_sp, m_cfa_reg_info.byte_size); 892f085c6ca2895663687dca704589478ff040b849Greg Clayton SetRegisterValue (m_cfa_reg_info, cfa_reg_value); 90888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 91888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const InstructionList &inst_list = disasm_sp->GetInstructionList (); 92888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const size_t num_instructions = inst_list.GetSize(); 933063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton if (num_instructions > 0) 94888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 953063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton Instruction *inst = inst_list.GetInstructionAtIndex (0).get(); 963063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton const addr_t base_addr = inst->GetAddress().GetFileAddress(); 9775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // Initialize the current row with the one row that was created 9875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // from the CreateFunctionEntryUnwind call above... 9975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_curr_row = unwind_plan.GetLastRow(); 100888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 1013063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton for (size_t idx=0; idx<num_instructions; ++idx) 1023063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 1033063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst = inst_list.GetInstructionAtIndex (idx).get(); 1043063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton if (inst) 1053063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 10675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 1075114e88ce51cd2ab45d0829e3f21ea8b2e16174dJason Molenda if (log && IsLogVerbose ()) 10875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 10975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 11075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton inst->Dump(&strm, inst_list.GetMaxOpcocdeByteSize (), show_address, show_bytes, &exe_ctx, raw); 11175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 11275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 1133063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 1143063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_inst_emulator_ap->SetInstruction (inst->GetOpcode(), 1153063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst->GetAddress(), 116567e7f3ba16eb48cb9fd6a2f26f2f7269eb6983cGreg Clayton exe_ctx.GetTargetPtr()); 1173063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 1183063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_inst_emulator_ap->EvaluateInstruction (eEmulateInstructionOptionIgnoreConditions); 11975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 12075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (unwind_plan.GetLastRow() != m_curr_row) 12175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 12275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // Be sure to not edit the offset unless our row has changed 12375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // so that the "!=" call above doesn't trigger every time 12475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_curr_row.SetOffset (inst->GetAddress().GetFileAddress() + inst->GetOpcode().GetByteSize() - base_addr); 12575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // Append the new row 12675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.AppendRow (m_curr_row); 12775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 1283063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 129888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 130888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 131888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 13275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 1335114e88ce51cd2ab45d0829e3f21ea8b2e16174dJason Molenda if (log && IsLogVerbose ()) 13475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 13575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 13675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton lldb::addr_t base_addr = range.GetBaseAddress().GetLoadAddress(&thread.GetProcess().GetTarget()); 13775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.Printf ("Resulting unwind rows for [0x%llx - 0x%llx):", base_addr, base_addr + range.GetByteSize()); 13875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.Dump(strm, &thread, base_addr); 13975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 14075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 14175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return unwind_plan.GetRowCount() > 0; 142888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 143f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 144f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 145f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 146f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 147888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::GetFastUnwindPlan (AddressRange& func, 148888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Thread& thread, 149888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton UnwindPlan &unwind_plan) 150f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 151f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 152f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 153f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 154f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 155888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::FirstNonPrologueInsn (AddressRange& func, 156888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Target& target, 157888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Thread* thread, 158888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Address& first_non_prologue_insn) 159f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 160f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 161f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 162f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 1638badcb2503ed2e2884a48f66099c1d48494817f4Greg ClaytonUnwindAssembly * 164f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::CreateInstance (const ArchSpec &arch) 165f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 166061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton std::auto_ptr<EmulateInstruction> inst_emulator_ap (EmulateInstruction::FindPlugin (arch, eInstructionTypePrologueEpilogue, NULL)); 167888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton // Make sure that all prologue instructions are handled 168888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton if (inst_emulator_ap.get()) 169888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return new UnwindAssemblyInstEmulation (arch, inst_emulator_ap.release()); 170f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return NULL; 171f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 172f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 173f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 174f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//------------------------------------------------------------------ 175f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// PluginInterface protocol in UnwindAssemblyParser_x86 176f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//------------------------------------------------------------------ 177f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 178f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 179f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginName() 180f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 181f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "UnwindAssemblyInstEmulation"; 182f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 183f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 184f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 185f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetShortPluginName() 186f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 187f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "unwindassembly.inst-emulation"; 188f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 189f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 190f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 191f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonuint32_t 192f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginVersion() 193f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 194f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return 1; 195f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 196f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 197f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonvoid 198f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::Initialize() 199f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 200f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton PluginManager::RegisterPlugin (GetPluginNameStatic(), 201f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton GetPluginDescriptionStatic(), 202f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton CreateInstance); 203f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 204f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 205f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonvoid 206f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::Terminate() 207f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 208f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton PluginManager::UnregisterPlugin (CreateInstance); 209f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 210f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 211f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 212f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 213f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginNameStatic() 214f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 215f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "UnwindAssemblyInstEmulation"; 216f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 217f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 218f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 219f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginDescriptionStatic() 220f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 221f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "Instruction emulation based unwind information."; 222f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 223888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 224888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 225c07d451bb046e47215bd73fda0235362cc6b1a47Greg Claytonuint64_t 226061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::MakeRegisterKindValuePair (const RegisterInfo ®_info) 227c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 228c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton uint32_t reg_kind, reg_num; 229061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (EmulateInstruction::GetBestRegisterKindAndNumber (®_info, reg_kind, reg_num)) 230c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton return (uint64_t)reg_kind << 24 | reg_num; 231c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton return 0ull; 232c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 233c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 234c07d451bb046e47215bd73fda0235362cc6b1a47Greg Claytonvoid 235061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::SetRegisterValue (const RegisterInfo ®_info, const RegisterValue ®_value) 236c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 237c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton m_register_values[MakeRegisterKindValuePair (reg_info)] = reg_value; 238c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 239c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 240061b79dbf1fefaf157d414747e98a463a0f32edaGreg Claytonbool 241061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::GetRegisterValue (const RegisterInfo ®_info, RegisterValue ®_value) 242c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 243c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton const uint64_t reg_id = MakeRegisterKindValuePair (reg_info); 244c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton RegisterValueMap::const_iterator pos = m_register_values.find(reg_id); 245c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton if (pos != m_register_values.end()) 246061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton { 247061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value = pos->second; 248061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return true; // We had a real value that comes from an opcode that wrote 249061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton // to it... 250061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton } 251061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton // We are making up a value that is recognizable... 252061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value.SetUInt(reg_id, reg_info.byte_size); 253061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return false; 254c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 255c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 256888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 257888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonsize_t 258888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::ReadMemory (EmulateInstruction *instruction, 259888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 260888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 261888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton lldb::addr_t addr, 262888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *dst, 263888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton size_t dst_len) 264888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 26575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 26675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 2675114e88ce51cd2ab45d0829e3f21ea8b2e16174dJason Molenda if (log && IsLogVerbose ()) 26875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 26975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 27075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::ReadMemory (addr = 0x%16.16llx, dst = %p, dst_len = %zu, context = ", 27175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton addr, 27275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton dst, 27375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton dst_len); 27475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 27575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData ()); 27675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 277888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return dst_len; 278888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 279888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 280888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonsize_t 281888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction, 282888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 283888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 284888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton lldb::addr_t addr, 285888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const void *dst, 286888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton size_t dst_len) 287888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 28875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (baton && dst && dst_len) 28975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->WriteMemory (instruction, context, addr, dst, dst_len); 29075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return 0; 29175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 29275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 29375906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonsize_t 29475906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction, 29575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const EmulateInstruction::Context &context, 29675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton lldb::addr_t addr, 29775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const void *dst, 29875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton size_t dst_len) 29975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 300888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton DataExtractor data (dst, 301888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton dst_len, 302888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton instruction->GetArchitecture ().GetByteOrder(), 303888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton instruction->GetArchitecture ().GetAddressByteSize()); 304888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 30575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 30675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 3075114e88ce51cd2ab45d0829e3f21ea8b2e16174dJason Molenda if (log && IsLogVerbose ()) 30875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 30975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 31075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 31175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString ("UnwindAssemblyInstEmulation::WriteMemory ("); 31275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton data.Dump(&strm, 0, eFormatBytes, 1, dst_len, UINT32_MAX, addr, 0, 0); 31375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString (", context = "); 31475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 31575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 31675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 3173063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 31875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool can_replace = true; 31975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool cant_replace = false; 32075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 3213063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton switch (context.type) 3223063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 323061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton default: 3243063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextInvalid: 3253063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextReadOpcode: 3263063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextImmediate: 3273063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustBaseRegister: 3283063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterPlusOffset: 3293063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustPC: 3303063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterStore: 3313063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterLoad: 3323063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRelativeBranchImmediate: 3333063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAbsoluteBranchRegister: 3343063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextSupervisorCall: 3353063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextTableBranchReadMemory: 3363063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextWriteRegisterRandomBits: 3373063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextWriteMemoryRandomBits: 3383063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextArithmetic: 3393063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdvancePC: 3403063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextReturnFromException: 3413063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextPopRegisterOffStack: 3423063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustStackPointer: 3433063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 3443063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 3453063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextPushRegisterOnStack: 3463063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 34775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton uint32_t reg_num = LLDB_INVALID_REGNUM; 34875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton bool is_return_address_reg = false; 34975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t unwind_reg_kind = m_unwind_plan_ptr->GetRegisterKind(); 35075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (context.info_type == EmulateInstruction::eInfoTypeRegisterToRegisterPlusOffset) 35175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 35275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton reg_num = context.info.RegisterToRegisterPlusOffset.data_reg.kinds[unwind_reg_kind]; 35375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (context.info.RegisterToRegisterPlusOffset.data_reg.kinds[eRegisterKindGeneric] == LLDB_REGNUM_GENERIC_RA) 35475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton is_return_address_reg = true; 35575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 35675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton else 35775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 35875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton assert (!"unhandled case, add code to handle this!"); 35975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 36075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 36175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (reg_num != LLDB_INVALID_REGNUM) 36275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 36375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (m_pushed_regs.find (reg_num) == m_pushed_regs.end()) 3643063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 36575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_pushed_regs[reg_num] = addr; 36675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const int32_t offset = addr - m_initial_sp; 36775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_curr_row.SetRegisterLocationToAtCFAPlusOffset (reg_num, offset, cant_replace); 36875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (is_return_address_reg) 36975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 37075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // This push was pushing the return address register, 37175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // so this is also how we will unwind the PC... 37275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton RegisterInfo pc_reg_info; 37375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (instruction->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC, pc_reg_info)) 37475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 37575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton uint32_t pc_reg_num = pc_reg_info.kinds[unwind_reg_kind]; 37675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (pc_reg_num != LLDB_INVALID_REGNUM) 37775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_curr_row.SetRegisterLocationToAtCFAPlusOffset (pc_reg_num, offset, can_replace); 37875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 37975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 3803063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 38175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 3823063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 3833063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 3843063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 3853063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 3863063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 387888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return dst_len; 388888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 389888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 390888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonbool 391888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction, 392888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 393061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterInfo *reg_info, 394061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton RegisterValue ®_value) 395888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 39675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 397061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (baton && reg_info) 39875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->ReadRegister (instruction, reg_info, reg_value); 39975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 40075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 40175906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonbool 40275906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction, 40375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterInfo *reg_info, 40475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton RegisterValue ®_value) 40575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 40675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton bool synthetic = GetRegisterValue (*reg_info, reg_value); 407888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 40875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 40975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 4105114e88ce51cd2ab45d0829e3f21ea8b2e16174dJason Molenda if (log && IsLogVerbose ()) 41175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 41275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 41375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 414061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::ReadRegister (name = \"%s\") => synthetic_value = %i, value = ", reg_info->name, synthetic); 415997b1e82f098a8b748b490d1ae6d0bbe597a59d5Greg Clayton reg_value.Dump(&strm, reg_info, false, false, eFormatDefault); 41675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString(strm.GetData()); 417061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton } 418888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return true; 419888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 420888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 421888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonbool 422888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction, 423888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 424888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 425061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterInfo *reg_info, 426061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterValue ®_value) 427888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 42875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (baton && reg_info) 42975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->WriteRegister (instruction, context, reg_info, reg_value); 43075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 43175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 43275906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonbool 43375906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction, 43475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const EmulateInstruction::Context &context, 43575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterInfo *reg_info, 43675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterValue ®_value) 43775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 43875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 439061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton 4405114e88ce51cd2ab45d0829e3f21ea8b2e16174dJason Molenda if (log && IsLogVerbose ()) 44175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 44275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 44375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 44475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::WriteRegister (name = \"%s\", value = ", reg_info->name); 445997b1e82f098a8b748b490d1ae6d0bbe597a59d5Greg Clayton reg_value.Dump(&strm, reg_info, false, false, eFormatDefault); 44675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString (", context = "); 44775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 44875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString(strm.GetData()); 44975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 450c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 45175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool must_replace = true; 45275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton SetRegisterValue (*reg_info, reg_value); 453888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 454888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton switch (context.type) 455888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 456061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton default: 457888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextInvalid: 458888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextReadOpcode: 459888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextImmediate: 460888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustBaseRegister: 461888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterPlusOffset: 462888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustPC: 463888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterStore: 464888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterLoad: 465888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRelativeBranchImmediate: 466888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAbsoluteBranchRegister: 467888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextSupervisorCall: 468888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextTableBranchReadMemory: 469888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextWriteRegisterRandomBits: 470888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextWriteMemoryRandomBits: 471c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton case EmulateInstruction::eContextArithmetic: 472888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdvancePC: 473888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextReturnFromException: 474888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextPushRegisterOnStack: 47575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// { 47675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 47775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// if (reg_num != LLDB_INVALID_REGNUM) 47875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// { 47975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// const bool can_replace_only_if_unspecified = true; 48075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// 48175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// m_curr_row.SetRegisterLocationToUndefined (reg_num, 48275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// can_replace_only_if_unspecified, 48375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// can_replace_only_if_unspecified); 48475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// } 48575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// } 486888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 4873063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 488888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextPopRegisterOffStack: 4893063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 49075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 49175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (reg_num != LLDB_INVALID_REGNUM) 4923063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 49375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_curr_row.SetRegisterLocationToSame (reg_num, must_replace); 4943063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 4953063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 496888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 497888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 49875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton case EmulateInstruction::eContextSetFramePointer: 49975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (!m_fp_is_cfa) 50075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 50175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_fp_is_cfa = true; 50275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_cfa_reg_info = *reg_info; 50375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t cfa_reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 50475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton assert (cfa_reg_num != LLDB_INVALID_REGNUM); 50575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_curr_row.SetCFARegister(cfa_reg_num); 50675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_curr_row.SetCFAOffset(m_initial_sp - reg_value.GetAsUInt64()); 50775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 50875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton break; 50975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 510888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustStackPointer: 51175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // If we have created a frame using the frame pointer, don't follow 51275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // subsequent adjustments to the stack pointer. 51375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (!m_fp_is_cfa) 51475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 51575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_curr_row.SetCFAOffset (m_initial_sp - reg_value.GetAsUInt64()); 51675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 517888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 518888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 519888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return true; 520888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 521888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 522888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 523