UnwindAssemblyInstEmulation.cpp revision 68fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7
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//----------------------------------------------------------------------------------------------- 337fad24a9fd7226016b28fef78930501a1bef898cJason Molenda// UnwindAssemblyInstEmulation 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; 7475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_inst_emulator_ap->GetRegisterInfo (unwind_plan.GetRegisterKind(), 7575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.GetInitialCFARegister(), 7675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_cfa_reg_info); 7775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 7875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_fp_is_cfa = false; 7975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_register_values.clear(); 8075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_pushed_regs.clear(); 8175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 827fad24a9fd7226016b28fef78930501a1bef898cJason Molenda // Initialize the CFA with a known value. In the 32 bit case 837fad24a9fd7226016b28fef78930501a1bef898cJason Molenda // it will be 0x80000000, and in the 64 bit case 0x8000000000000000. 847fad24a9fd7226016b28fef78930501a1bef898cJason Molenda // We use the address byte size to be safe for any future addresss sizes 85061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton m_initial_sp = (1ull << ((addr_byte_size * 8) - 1)); 862f085c6ca2895663687dca704589478ff040b849Greg Clayton RegisterValue cfa_reg_value; 872f085c6ca2895663687dca704589478ff040b849Greg Clayton cfa_reg_value.SetUInt (m_initial_sp, m_cfa_reg_info.byte_size); 882f085c6ca2895663687dca704589478ff040b849Greg Clayton SetRegisterValue (m_cfa_reg_info, cfa_reg_value); 8968fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda 90888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const InstructionList &inst_list = disasm_sp->GetInstructionList (); 91888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const size_t num_instructions = inst_list.GetSize(); 9268fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda 9368fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda UnwindPlan::RowSP prologue_completed_row; 9468fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda 953063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton if (num_instructions > 0) 96888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 973063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton Instruction *inst = inst_list.GetInstructionAtIndex (0).get(); 983063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton const addr_t base_addr = inst->GetAddress().GetFileAddress(); 9975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // Initialize the current row with the one row that was created 10075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // from the CreateFunctionEntryUnwind call above... 10168fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda UnwindPlan::RowSP last_row = unwind_plan.GetLastRow(); 10268fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 10368fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda if (last_row.get()) 10468fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda *newrow = *last_row.get(); 10568fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row.reset(newrow); 106888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 1073063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton for (size_t idx=0; idx<num_instructions; ++idx) 1083063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 1093063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst = inst_list.GetInstructionAtIndex (idx).get(); 1103063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton if (inst) 1113063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 1122d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 11375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 11475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 1150fef968c843be422d6facc2e8d54d8471eee88edGreg Clayton inst->Dump(&strm, inst_list.GetMaxOpcocdeByteSize (), show_address, show_bytes, NULL); 11675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 11775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 1183063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 1193063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_inst_emulator_ap->SetInstruction (inst->GetOpcode(), 1203063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst->GetAddress(), 121567e7f3ba16eb48cb9fd6a2f26f2f7269eb6983cGreg Clayton exe_ctx.GetTargetPtr()); 1223063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 1233063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_inst_emulator_ap->EvaluateInstruction (eEmulateInstructionOptionIgnoreConditions); 12475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 12575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (unwind_plan.GetLastRow() != m_curr_row) 12675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 12775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // Be sure to not edit the offset unless our row has changed 12875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // so that the "!=" call above doesn't trigger every time 12968fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetOffset (inst->GetAddress().GetFileAddress() + inst->GetOpcode().GetByteSize() - base_addr); 13075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // Append the new row 13175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.AppendRow (m_curr_row); 13268fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda 13368fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 13468fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda *newrow = *m_curr_row.get(); 13568fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row.reset(newrow); 13675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 1373063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 138888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 139888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 140888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 14175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 1422d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 14375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 14475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 145f4124deeb9532044a38c0774ced872f2709347daGreg Clayton lldb::addr_t base_addr = range.GetBaseAddress().GetLoadAddress(thread.CalculateTarget().get()); 14675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.Printf ("Resulting unwind rows for [0x%llx - 0x%llx):", base_addr, base_addr + range.GetByteSize()); 14775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.Dump(strm, &thread, base_addr); 14875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 14975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 15075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return unwind_plan.GetRowCount() > 0; 151888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 152f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 153f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 154f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 155f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 156888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::GetFastUnwindPlan (AddressRange& func, 157888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Thread& thread, 158888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton UnwindPlan &unwind_plan) 159f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 160f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 161f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 162f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 163f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 164888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::FirstNonPrologueInsn (AddressRange& func, 165f4124deeb9532044a38c0774ced872f2709347daGreg Clayton const ExecutionContext &exe_ctx, 166888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Address& first_non_prologue_insn) 167f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 168f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 169f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 170f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 1718badcb2503ed2e2884a48f66099c1d48494817f4Greg ClaytonUnwindAssembly * 172f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::CreateInstance (const ArchSpec &arch) 173f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 174061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton std::auto_ptr<EmulateInstruction> inst_emulator_ap (EmulateInstruction::FindPlugin (arch, eInstructionTypePrologueEpilogue, NULL)); 175888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton // Make sure that all prologue instructions are handled 176888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton if (inst_emulator_ap.get()) 177888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return new UnwindAssemblyInstEmulation (arch, inst_emulator_ap.release()); 178f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return NULL; 179f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 180f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 181f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 182f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//------------------------------------------------------------------ 183f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// PluginInterface protocol in UnwindAssemblyParser_x86 184f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//------------------------------------------------------------------ 185f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 186f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 187f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginName() 188f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 189f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "UnwindAssemblyInstEmulation"; 190f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 191f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 192f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 193f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetShortPluginName() 194f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 195f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "unwindassembly.inst-emulation"; 196f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 197f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 198f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 199f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonuint32_t 200f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginVersion() 201f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 202f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return 1; 203f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 204f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 205f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonvoid 206f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::Initialize() 207f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 208f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton PluginManager::RegisterPlugin (GetPluginNameStatic(), 209f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton GetPluginDescriptionStatic(), 210f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton CreateInstance); 211f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 212f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 213f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonvoid 214f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::Terminate() 215f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 216f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton PluginManager::UnregisterPlugin (CreateInstance); 217f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 218f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 219f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 220f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 221f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginNameStatic() 222f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 223f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "UnwindAssemblyInstEmulation"; 224f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 225f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 226f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 227f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginDescriptionStatic() 228f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 229f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "Instruction emulation based unwind information."; 230f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 231888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 232888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 233c07d451bb046e47215bd73fda0235362cc6b1a47Greg Claytonuint64_t 234061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::MakeRegisterKindValuePair (const RegisterInfo ®_info) 235c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 236c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton uint32_t reg_kind, reg_num; 237061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (EmulateInstruction::GetBestRegisterKindAndNumber (®_info, reg_kind, reg_num)) 238c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton return (uint64_t)reg_kind << 24 | reg_num; 239c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton return 0ull; 240c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 241c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 242c07d451bb046e47215bd73fda0235362cc6b1a47Greg Claytonvoid 243061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::SetRegisterValue (const RegisterInfo ®_info, const RegisterValue ®_value) 244c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 245c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton m_register_values[MakeRegisterKindValuePair (reg_info)] = reg_value; 246c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 247c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 248061b79dbf1fefaf157d414747e98a463a0f32edaGreg Claytonbool 249061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::GetRegisterValue (const RegisterInfo ®_info, RegisterValue ®_value) 250c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 251c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton const uint64_t reg_id = MakeRegisterKindValuePair (reg_info); 252c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton RegisterValueMap::const_iterator pos = m_register_values.find(reg_id); 253c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton if (pos != m_register_values.end()) 254061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton { 255061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value = pos->second; 256061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return true; // We had a real value that comes from an opcode that wrote 257061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton // to it... 258061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton } 259061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton // We are making up a value that is recognizable... 260061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value.SetUInt(reg_id, reg_info.byte_size); 261061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return false; 262c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 263c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 264888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 265888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonsize_t 266888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::ReadMemory (EmulateInstruction *instruction, 267888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 268888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 269888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton lldb::addr_t addr, 270888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *dst, 271888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton size_t dst_len) 272888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 27375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 27475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 2752d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 27675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 27775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 27875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::ReadMemory (addr = 0x%16.16llx, dst = %p, dst_len = %zu, context = ", 27975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton addr, 28075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton dst, 28175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton dst_len); 28275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 28375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData ()); 28475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 285888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return dst_len; 286888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 287888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 288888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonsize_t 289888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction, 290888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 291888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 292888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton lldb::addr_t addr, 293888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const void *dst, 294888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton size_t dst_len) 295888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 29675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (baton && dst && dst_len) 29775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->WriteMemory (instruction, context, addr, dst, dst_len); 29875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return 0; 29975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 30075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 30175906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonsize_t 30275906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction, 30375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const EmulateInstruction::Context &context, 30475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton lldb::addr_t addr, 30575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const void *dst, 30675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton size_t dst_len) 30775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 308888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton DataExtractor data (dst, 309888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton dst_len, 310888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton instruction->GetArchitecture ().GetByteOrder(), 311888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton instruction->GetArchitecture ().GetAddressByteSize()); 312888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 31375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 31475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 3152d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 31675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 31775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 31875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 31975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString ("UnwindAssemblyInstEmulation::WriteMemory ("); 32075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton data.Dump(&strm, 0, eFormatBytes, 1, dst_len, UINT32_MAX, addr, 0, 0); 32175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString (", context = "); 32275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 32375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 32475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 3253063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 32675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool can_replace = true; 32775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool cant_replace = false; 32875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 3293063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton switch (context.type) 3303063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 331061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton default: 3323063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextInvalid: 3333063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextReadOpcode: 3343063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextImmediate: 3353063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustBaseRegister: 3363063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterPlusOffset: 3373063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustPC: 3383063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterStore: 3393063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterLoad: 3403063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRelativeBranchImmediate: 3413063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAbsoluteBranchRegister: 3423063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextSupervisorCall: 3433063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextTableBranchReadMemory: 3443063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextWriteRegisterRandomBits: 3453063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextWriteMemoryRandomBits: 3463063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextArithmetic: 3473063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdvancePC: 3483063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextReturnFromException: 3493063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextPopRegisterOffStack: 3503063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustStackPointer: 3513063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 3523063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 3533063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextPushRegisterOnStack: 3543063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 35575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton uint32_t reg_num = LLDB_INVALID_REGNUM; 35675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton bool is_return_address_reg = false; 35775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t unwind_reg_kind = m_unwind_plan_ptr->GetRegisterKind(); 35875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (context.info_type == EmulateInstruction::eInfoTypeRegisterToRegisterPlusOffset) 35975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 36075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton reg_num = context.info.RegisterToRegisterPlusOffset.data_reg.kinds[unwind_reg_kind]; 36175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (context.info.RegisterToRegisterPlusOffset.data_reg.kinds[eRegisterKindGeneric] == LLDB_REGNUM_GENERIC_RA) 36275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton is_return_address_reg = true; 36375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 36475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton else 36575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 36675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton assert (!"unhandled case, add code to handle this!"); 36775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 36875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 36975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (reg_num != LLDB_INVALID_REGNUM) 37075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 37175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (m_pushed_regs.find (reg_num) == m_pushed_regs.end()) 3723063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 37375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_pushed_regs[reg_num] = addr; 37475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const int32_t offset = addr - m_initial_sp; 37568fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToAtCFAPlusOffset (reg_num, offset, cant_replace); 37675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (is_return_address_reg) 37775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 37875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // This push was pushing the return address register, 37975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // so this is also how we will unwind the PC... 38075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton RegisterInfo pc_reg_info; 38175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (instruction->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC, pc_reg_info)) 38275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 38375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton uint32_t pc_reg_num = pc_reg_info.kinds[unwind_reg_kind]; 38475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (pc_reg_num != LLDB_INVALID_REGNUM) 38568fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToAtCFAPlusOffset (pc_reg_num, offset, can_replace); 38675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 38775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 3883063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 38975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 3903063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 3913063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 3923063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 3933063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 3943063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 395888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return dst_len; 396888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 397888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 398888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonbool 399888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction, 400888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 401061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterInfo *reg_info, 402061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton RegisterValue ®_value) 403888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 40475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 405061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (baton && reg_info) 40675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->ReadRegister (instruction, reg_info, reg_value); 40775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 40875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 40975906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonbool 41075906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction, 41175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterInfo *reg_info, 41275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton RegisterValue ®_value) 41375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 41475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton bool synthetic = GetRegisterValue (*reg_info, reg_value); 415888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 41675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 41775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 4182d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 41975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 42075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 42175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 422061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::ReadRegister (name = \"%s\") => synthetic_value = %i, value = ", reg_info->name, synthetic); 423997b1e82f098a8b748b490d1ae6d0bbe597a59d5Greg Clayton reg_value.Dump(&strm, reg_info, false, false, eFormatDefault); 42475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString(strm.GetData()); 425061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton } 426888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return true; 427888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 428888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 429888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonbool 430888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction, 431888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 432888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 433061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterInfo *reg_info, 434061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterValue ®_value) 435888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 43675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (baton && reg_info) 43775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->WriteRegister (instruction, context, reg_info, reg_value); 43875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 43975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 44075906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonbool 44175906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction, 44275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const EmulateInstruction::Context &context, 44375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterInfo *reg_info, 44475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterValue ®_value) 44575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 44675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 447061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton 4482d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 44975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 45075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 45175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 45275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::WriteRegister (name = \"%s\", value = ", reg_info->name); 453997b1e82f098a8b748b490d1ae6d0bbe597a59d5Greg Clayton reg_value.Dump(&strm, reg_info, false, false, eFormatDefault); 45475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString (", context = "); 45575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 45675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString(strm.GetData()); 45775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 458c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 45975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool must_replace = true; 46075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton SetRegisterValue (*reg_info, reg_value); 461888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 462888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton switch (context.type) 463888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 464061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton default: 465888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextInvalid: 466888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextReadOpcode: 467888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextImmediate: 468888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustBaseRegister: 469888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterPlusOffset: 470888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustPC: 471888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterStore: 472888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterLoad: 473888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRelativeBranchImmediate: 474888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAbsoluteBranchRegister: 475888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextSupervisorCall: 476888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextTableBranchReadMemory: 477888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextWriteRegisterRandomBits: 478888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextWriteMemoryRandomBits: 479c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton case EmulateInstruction::eContextArithmetic: 480888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdvancePC: 481888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextReturnFromException: 482888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextPushRegisterOnStack: 48375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// { 48475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 48575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// if (reg_num != LLDB_INVALID_REGNUM) 48675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// { 48775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// const bool can_replace_only_if_unspecified = true; 48875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// 48975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// m_curr_row.SetRegisterLocationToUndefined (reg_num, 49075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// can_replace_only_if_unspecified, 49175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// can_replace_only_if_unspecified); 49275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// } 49375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// } 494888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 4953063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 496888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextPopRegisterOffStack: 4973063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 49875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 49975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (reg_num != LLDB_INVALID_REGNUM) 5003063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 50168fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToSame (reg_num, must_replace); 5023063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 5033063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 504888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 505888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 50675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton case EmulateInstruction::eContextSetFramePointer: 50775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (!m_fp_is_cfa) 50875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 50975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_fp_is_cfa = true; 51075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_cfa_reg_info = *reg_info; 51175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t cfa_reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 51275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton assert (cfa_reg_num != LLDB_INVALID_REGNUM); 51368fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFARegister(cfa_reg_num); 51468fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFAOffset(m_initial_sp - reg_value.GetAsUInt64()); 51575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 51675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton break; 51775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 518888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustStackPointer: 51975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // If we have created a frame using the frame pointer, don't follow 52075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // subsequent adjustments to the stack pointer. 52175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (!m_fp_is_cfa) 52275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 52368fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFAOffset (m_initial_sp - reg_value.GetAsUInt64()); 52475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 525888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 526888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 527888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return true; 528888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 529888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 530888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 531