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 "lldb/Core/Address.h" 13f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Core/ArchSpec.h" 14888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton#include "lldb/Core/DataBufferHeap.h" 1549ce8969d3154e1560106cfe530444c09410f217Greg Clayton#include "lldb/Core/DataExtractor.h" 16888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton#include "lldb/Core/Disassembler.h" 17888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton#include "lldb/Core/Error.h" 1875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton#include "lldb/Core/Log.h" 19f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Core/PluginManager.h" 2075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton#include "lldb/Core/StreamString.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//----------------------------------------------------------------------------------------------- 327fad24a9fd7226016b28fef78930501a1bef898cJason Molenda// UnwindAssemblyInstEmulation 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 (range.GetByteSize() > 0 && 41888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton range.GetBaseAddress().IsValid() && 42888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_inst_emulator_ap.get()) 43888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 4475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 4575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // The the instruction emulation subclass setup the unwind plan for the 4675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // first instruction. 4775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_inst_emulator_ap->CreateFunctionEntryUnwind (unwind_plan); 4875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 4975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // CreateFunctionEntryUnwind should have created the first row. If it 5075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // doesn't, then we are done. 5175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (unwind_plan.GetRowCount() == 0) 5275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 53888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 54888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton ExecutionContext exe_ctx; 55888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton thread.CalculateExecutionContext(exe_ctx); 56888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton DisassemblerSP disasm_sp (Disassembler::DisassembleRange (m_arch, 57888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton NULL, 587d4083837c5a258375fdc185d464b4ed15759a4bJim Ingham NULL, 59888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton exe_ctx, 60888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton range)); 6175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 62952e9dc874944fcdbbb224f3ec4fc2c859376f64Greg Clayton Log *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 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(); 97a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 98a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Make a copy of the current instruction Row and save it in m_curr_row 99a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // so we can add updates as we process the instructions. 10068fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda UnwindPlan::RowSP last_row = unwind_plan.GetLastRow(); 10168fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 10268fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda if (last_row.get()) 10368fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda *newrow = *last_row.get(); 10468fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row.reset(newrow); 105888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 106a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Once we've seen the initial prologue instructions complete, save a 107a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // copy of the CFI at that point into prologue_completed_row for possible 108a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // use later. 109a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda int instructions_since_last_prologue_insn = 0; // # of insns since last CFI was update 1106ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 111a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda bool reinstate_prologue_next_instruction = false; // Next iteration, re-install the prologue row of CFI 1126ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 1136ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda bool last_instruction_restored_return_addr_reg = false; // re-install the prologue row of CFI if the next instruction is a branch immediate 1146ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 115d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda bool return_address_register_has_been_saved = false; // if we've seen the ra register get saved yet 116d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda 117a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda UnwindPlan::RowSP prologue_completed_row; // copy of prologue row of CFI 118a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 119a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // cache the pc register number (in whatever register numbering this UnwindPlan uses) for 120a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // quick reference during instruction parsing. 121a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda uint32_t pc_reg_num = LLDB_INVALID_REGNUM; 122a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda RegisterInfo pc_reg_info; 123a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (m_inst_emulator_ap->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC, pc_reg_info)) 124a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda pc_reg_num = pc_reg_info.kinds[unwind_plan.GetRegisterKind()]; 1256ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda else 1266ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda pc_reg_num = LLDB_INVALID_REGNUM; 127a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 1286ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda // cache the return address register number (in whatever register numbering this UnwindPlan uses) for 1296ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda // quick reference during instruction parsing. 1306ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda uint32_t ra_reg_num = LLDB_INVALID_REGNUM; 1316ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda RegisterInfo ra_reg_info; 1326ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda if (m_inst_emulator_ap->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_RA, ra_reg_info)) 1336ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda ra_reg_num = ra_reg_info.kinds[unwind_plan.GetRegisterKind()]; 1346ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda else 1356ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda ra_reg_num = LLDB_INVALID_REGNUM; 136a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 1373063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton for (size_t idx=0; idx<num_instructions; ++idx) 1383063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 139a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = false; 140d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda m_curr_insn_restored_a_register = false; 1413063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst = inst_list.GetInstructionAtIndex (idx).get(); 1423063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton if (inst) 1433063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 1442d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 14575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 14675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 1470fef968c843be422d6facc2e8d54d8471eee88edGreg Clayton inst->Dump(&strm, inst_list.GetMaxOpcocdeByteSize (), show_address, show_bytes, NULL); 14875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 14975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 1503063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 1513063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_inst_emulator_ap->SetInstruction (inst->GetOpcode(), 1523063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst->GetAddress(), 153567e7f3ba16eb48cb9fd6a2f26f2f7269eb6983cGreg Clayton exe_ctx.GetTargetPtr()); 1543063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 1553063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_inst_emulator_ap->EvaluateInstruction (eEmulateInstructionOptionIgnoreConditions); 156a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 157a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Were there any changes to the CFI while evaluating this instruction? 158a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (m_curr_row_modified) 15975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 160a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda reinstate_prologue_next_instruction = false; 16168fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetOffset (inst->GetAddress().GetFileAddress() + inst->GetOpcode().GetByteSize() - base_addr); 16275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // Append the new row 16375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.AppendRow (m_curr_row); 16468fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda 165a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Allocate a new Row for m_curr_row, copy the current state into it 16668fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 16768fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda *newrow = *m_curr_row.get(); 16868fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row.reset(newrow); 169a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 170d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // If m_curr_insn_restored_a_register == true, we're looking at an epilogue instruction. 171d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // Set instructions_since_last_prologue_insn to a very high number so we don't append 172d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // any of these epilogue instructions to our prologue_complete row. 173d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda if (m_curr_insn_restored_a_register == false && instructions_since_last_prologue_insn < 8) 174d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda instructions_since_last_prologue_insn = 0; 175d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda else 176d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda instructions_since_last_prologue_insn = 99; 177d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda 178d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda UnwindPlan::Row::RegisterLocation pc_regloc; 179d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda UnwindPlan::Row::RegisterLocation ra_regloc; 180d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda 181d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // While parsing the instructions of this function, if we've ever 182d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // seen the return address register (aka lr on arm) in a non-IsSame() state, 183d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // it has been saved on the stack. If it's evern back to IsSame(), we've 184d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // executed an epilogue. 185d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda if (ra_reg_num != LLDB_INVALID_REGNUM 186d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda && m_curr_row->GetRegisterInfo (ra_reg_num, ra_regloc) 187d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda && !ra_regloc.IsSame()) 188d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda { 189d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda return_address_register_has_been_saved = true; 190d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda } 191a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 192a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // If the caller's pc is "same", we've just executed an epilogue and we return to the caller 193a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // after this instruction completes executing. 194a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // If there are any instructions past this, there must have been flow control over this 195a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // epilogue so we'll reinstate the original prologue setup instructions. 196d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda if (prologue_completed_row.get() 197a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda && pc_reg_num != LLDB_INVALID_REGNUM 198a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda && m_curr_row->GetRegisterInfo (pc_reg_num, pc_regloc) 199a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda && pc_regloc.IsSame()) 200a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 201a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (log && log->GetVerbose()) 202a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- pc is <same>, restore prologue instructions."); 203a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda reinstate_prologue_next_instruction = true; 204a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 205d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda else if (prologue_completed_row.get() 206d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda && return_address_register_has_been_saved 2076ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda && ra_reg_num != LLDB_INVALID_REGNUM 2086ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda && m_curr_row->GetRegisterInfo (ra_reg_num, ra_regloc) 2096ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda && ra_regloc.IsSame()) 2106ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 2116ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda if (log && log->GetVerbose()) 2126ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- lr is <same>, restore prologue instruction if the next instruction is a branch immediate."); 2136ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda last_instruction_restored_return_addr_reg = true; 2146ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 215a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 216a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda else 217a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 218a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // If the previous instruction was a return-to-caller (epilogue), and we're still executing 219a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // instructions in this function, there must be a code path that jumps over that epilogue. 2206ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda // Also detect the case where we epilogue & branch imm to another function (tail-call opt) 2216ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda // instead of a normal pop lr-into-pc exit. 222a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Reinstate the frame setup from the prologue. 2236ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda if (reinstate_prologue_next_instruction 2246ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda || (m_curr_insn_is_branch_immediate && last_instruction_restored_return_addr_reg)) 225a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 226a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (log && log->GetVerbose()) 227a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- Reinstating prologue instruction set"); 228a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 229a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda *newrow = *prologue_completed_row.get(); 230a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row.reset(newrow); 231a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row->SetOffset (inst->GetAddress().GetFileAddress() + inst->GetOpcode().GetByteSize() - base_addr); 232a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda unwind_plan.AppendRow(m_curr_row); 233a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 234a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda newrow = new UnwindPlan::Row; 235a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda *newrow = *m_curr_row.get(); 236a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row.reset(newrow); 237a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 238a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda reinstate_prologue_next_instruction = false; 2396ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda last_instruction_restored_return_addr_reg = false; 2406ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda m_curr_insn_is_branch_immediate = false; 241a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 242a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 2436ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda // clear both of these if either one wasn't set 2446ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda if (last_instruction_restored_return_addr_reg) 2456ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 2466ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda last_instruction_restored_return_addr_reg = false; 2476ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 2486ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda if (m_curr_insn_is_branch_immediate) 2496ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 2506ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda m_curr_insn_is_branch_immediate = false; 2516ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 2526ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 253d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // Stop updating the prologue instructions if we've seen 8 non-prologue instructions 254d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // in a row. 255d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda if (instructions_since_last_prologue_insn++ < 8) 256a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 257a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 258a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda *newrow = *m_curr_row.get(); 259a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda prologue_completed_row.reset(newrow); 260a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (log && log->GetVerbose()) 261d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- saving a copy of the current row as the prologue row."); 262a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 26375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 2643063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 265888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 266888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 267bc16b9273326b81dc4aae022389a9f8c3bdca66dJim Ingham // FIXME: The DisassemblerLLVMC has a reference cycle and won't go away if it has any active instructions. 268bc16b9273326b81dc4aae022389a9f8c3bdca66dJim Ingham // I'll fix that but for now, just clear the list and it will go away nicely. 269bc16b9273326b81dc4aae022389a9f8c3bdca66dJim Ingham disasm_sp->GetInstructionList().Clear(); 270888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 27175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 2722d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 27375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 27475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 275f4124deeb9532044a38c0774ced872f2709347daGreg Clayton lldb::addr_t base_addr = range.GetBaseAddress().GetLoadAddress(thread.CalculateTarget().get()); 2765f35a4be95aed0e5b2cb36f7d785bcbfc67284aeDaniel Malea strm.Printf ("Resulting unwind rows for [0x%" PRIx64 " - 0x%" PRIx64 "):", base_addr, base_addr + range.GetByteSize()); 27775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.Dump(strm, &thread, base_addr); 27875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 27975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 28075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return unwind_plan.GetRowCount() > 0; 281888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 282f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 283f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 284f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 285f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 286888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::GetFastUnwindPlan (AddressRange& func, 287888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Thread& thread, 288888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton UnwindPlan &unwind_plan) 289f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 290f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 291f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 292f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 293f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 294888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::FirstNonPrologueInsn (AddressRange& func, 295f4124deeb9532044a38c0774ced872f2709347daGreg Clayton const ExecutionContext &exe_ctx, 296888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Address& first_non_prologue_insn) 297f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 298f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 299f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 300f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 3018badcb2503ed2e2884a48f66099c1d48494817f4Greg ClaytonUnwindAssembly * 302f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::CreateInstance (const ArchSpec &arch) 303f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 304102b2c2681c9a830afe25bfea35557421905e42cGreg Clayton std::unique_ptr<EmulateInstruction> inst_emulator_ap (EmulateInstruction::FindPlugin (arch, eInstructionTypePrologueEpilogue, NULL)); 305888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton // Make sure that all prologue instructions are handled 306888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton if (inst_emulator_ap.get()) 307888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return new UnwindAssemblyInstEmulation (arch, inst_emulator_ap.release()); 308f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return NULL; 309f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 310f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 311f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 312f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//------------------------------------------------------------------ 313f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// PluginInterface protocol in UnwindAssemblyParser_x86 314f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//------------------------------------------------------------------ 3150e191607adcb0ea8ebd06c278be648a7f5c0097fGreg ClaytonConstString 316f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginName() 317f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 3180e191607adcb0ea8ebd06c278be648a7f5c0097fGreg Clayton return GetPluginNameStatic(); 319f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 320f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 321f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonuint32_t 322f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginVersion() 323f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 324f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return 1; 325f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 326f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 327f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonvoid 328f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::Initialize() 329f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 330f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton PluginManager::RegisterPlugin (GetPluginNameStatic(), 331f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton GetPluginDescriptionStatic(), 332f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton CreateInstance); 333f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 334f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 335f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonvoid 336f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::Terminate() 337f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 338f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton PluginManager::UnregisterPlugin (CreateInstance); 339f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 340f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 341f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 3420e191607adcb0ea8ebd06c278be648a7f5c0097fGreg ClaytonConstString 343f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginNameStatic() 344f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 3450e191607adcb0ea8ebd06c278be648a7f5c0097fGreg Clayton static ConstString g_name("inst-emulation"); 3460e191607adcb0ea8ebd06c278be648a7f5c0097fGreg Clayton return g_name; 347f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 348f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 349f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 350f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginDescriptionStatic() 351f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 352f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "Instruction emulation based unwind information."; 353f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 354888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 355888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 356c07d451bb046e47215bd73fda0235362cc6b1a47Greg Claytonuint64_t 357061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::MakeRegisterKindValuePair (const RegisterInfo ®_info) 358c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 359c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton uint32_t reg_kind, reg_num; 360061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (EmulateInstruction::GetBestRegisterKindAndNumber (®_info, reg_kind, reg_num)) 361c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton return (uint64_t)reg_kind << 24 | reg_num; 362c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton return 0ull; 363c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 364c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 365c07d451bb046e47215bd73fda0235362cc6b1a47Greg Claytonvoid 366061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::SetRegisterValue (const RegisterInfo ®_info, const RegisterValue ®_value) 367c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 368c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton m_register_values[MakeRegisterKindValuePair (reg_info)] = reg_value; 369c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 370c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 371061b79dbf1fefaf157d414747e98a463a0f32edaGreg Claytonbool 372061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::GetRegisterValue (const RegisterInfo ®_info, RegisterValue ®_value) 373c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 374c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton const uint64_t reg_id = MakeRegisterKindValuePair (reg_info); 375c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton RegisterValueMap::const_iterator pos = m_register_values.find(reg_id); 376c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton if (pos != m_register_values.end()) 377061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton { 378061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value = pos->second; 379061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return true; // We had a real value that comes from an opcode that wrote 380061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton // to it... 381061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton } 382061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton // We are making up a value that is recognizable... 383061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value.SetUInt(reg_id, reg_info.byte_size); 384061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return false; 385c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 386c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 387888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 388888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonsize_t 389888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::ReadMemory (EmulateInstruction *instruction, 390888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 391888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 392888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton lldb::addr_t addr, 393888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *dst, 394888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton size_t dst_len) 395888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 396952e9dc874944fcdbbb224f3ec4fc2c859376f64Greg Clayton Log *log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 39775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 3982d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 39975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 40075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 4015f35a4be95aed0e5b2cb36f7d785bcbfc67284aeDaniel Malea strm.Printf ("UnwindAssemblyInstEmulation::ReadMemory (addr = 0x%16.16" PRIx64 ", dst = %p, dst_len = %" PRIu64 ", context = ", 40275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton addr, 40375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton dst, 404851e30ec6a1b1d2c154bb7d69ed0d05b5fd14705Greg Clayton (uint64_t)dst_len); 40575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 40675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData ()); 40775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 408b454db72811f6417878b42be816c5cbbea48703cJason Molenda memset (dst, 0, dst_len); 409888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return dst_len; 410888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 411888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 412888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonsize_t 413888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction, 414888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 415888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 416888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton lldb::addr_t addr, 417888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const void *dst, 418888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton size_t dst_len) 419888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 42075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (baton && dst && dst_len) 42175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->WriteMemory (instruction, context, addr, dst, dst_len); 42275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return 0; 42375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 42475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 42575906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonsize_t 42675906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction, 42775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const EmulateInstruction::Context &context, 42875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton lldb::addr_t addr, 42975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const void *dst, 43075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton size_t dst_len) 43175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 432888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton DataExtractor data (dst, 433888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton dst_len, 434888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton instruction->GetArchitecture ().GetByteOrder(), 435888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton instruction->GetArchitecture ().GetAddressByteSize()); 436888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 437952e9dc874944fcdbbb224f3ec4fc2c859376f64Greg Clayton Log *log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 43875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 4392d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 44075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 44175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 44275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 44375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString ("UnwindAssemblyInstEmulation::WriteMemory ("); 44475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton data.Dump(&strm, 0, eFormatBytes, 1, dst_len, UINT32_MAX, addr, 0, 0); 44575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString (", context = "); 44675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 44775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 44875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 4493063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 45075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool can_replace = true; 45175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool cant_replace = false; 45275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 4533063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton switch (context.type) 4543063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 455061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton default: 4563063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextInvalid: 4573063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextReadOpcode: 4583063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextImmediate: 4593063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustBaseRegister: 4603063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterPlusOffset: 4613063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustPC: 4623063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterStore: 4633063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterLoad: 4643063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRelativeBranchImmediate: 4653063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAbsoluteBranchRegister: 4663063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextSupervisorCall: 4673063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextTableBranchReadMemory: 4683063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextWriteRegisterRandomBits: 4693063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextWriteMemoryRandomBits: 4703063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextArithmetic: 4713063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdvancePC: 4723063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextReturnFromException: 4733063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextPopRegisterOffStack: 4743063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustStackPointer: 4753063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 4763063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 4773063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextPushRegisterOnStack: 4783063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 47975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton uint32_t reg_num = LLDB_INVALID_REGNUM; 48075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton bool is_return_address_reg = false; 48175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t unwind_reg_kind = m_unwind_plan_ptr->GetRegisterKind(); 48275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (context.info_type == EmulateInstruction::eInfoTypeRegisterToRegisterPlusOffset) 48375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 48475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton reg_num = context.info.RegisterToRegisterPlusOffset.data_reg.kinds[unwind_reg_kind]; 48575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (context.info.RegisterToRegisterPlusOffset.data_reg.kinds[eRegisterKindGeneric] == LLDB_REGNUM_GENERIC_RA) 48675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton is_return_address_reg = true; 48775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 48875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton else 48975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 49075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton assert (!"unhandled case, add code to handle this!"); 49175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 49275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 49375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (reg_num != LLDB_INVALID_REGNUM) 49475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 49575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (m_pushed_regs.find (reg_num) == m_pushed_regs.end()) 4963063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 49775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_pushed_regs[reg_num] = addr; 49875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const int32_t offset = addr - m_initial_sp; 49968fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToAtCFAPlusOffset (reg_num, offset, cant_replace); 500a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 50175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (is_return_address_reg) 50275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 50375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // This push was pushing the return address register, 50475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // so this is also how we will unwind the PC... 50575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton RegisterInfo pc_reg_info; 50675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (instruction->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC, pc_reg_info)) 50775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 50875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton uint32_t pc_reg_num = pc_reg_info.kinds[unwind_reg_kind]; 50975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (pc_reg_num != LLDB_INVALID_REGNUM) 510a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 51168fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToAtCFAPlusOffset (pc_reg_num, offset, can_replace); 512a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 513a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 51475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 51575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 5163063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 51775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 5183063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 5193063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 5203063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 5213063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 5223063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 523888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return dst_len; 524888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 525888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 526888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonbool 527888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction, 528888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 529061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterInfo *reg_info, 530061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton RegisterValue ®_value) 531888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 53275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 533061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (baton && reg_info) 53475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->ReadRegister (instruction, reg_info, reg_value); 53575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 53675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 53775906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonbool 53875906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction, 53975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterInfo *reg_info, 54075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton RegisterValue ®_value) 54175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 54275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton bool synthetic = GetRegisterValue (*reg_info, reg_value); 543888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 544952e9dc874944fcdbbb224f3ec4fc2c859376f64Greg Clayton Log *log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 54575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 5462d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 54775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 54875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 54975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 550061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::ReadRegister (name = \"%s\") => synthetic_value = %i, value = ", reg_info->name, synthetic); 551997b1e82f098a8b748b490d1ae6d0bbe597a59d5Greg Clayton reg_value.Dump(&strm, reg_info, false, false, eFormatDefault); 55275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString(strm.GetData()); 553061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton } 554888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return true; 555888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 556888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 557888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonbool 558888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction, 559888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 560888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 561061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterInfo *reg_info, 562061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterValue ®_value) 563888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 56475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (baton && reg_info) 56575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->WriteRegister (instruction, context, reg_info, reg_value); 56675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 56775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 56875906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonbool 56975906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction, 57075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const EmulateInstruction::Context &context, 57175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterInfo *reg_info, 57275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterValue ®_value) 57375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 574952e9dc874944fcdbbb224f3ec4fc2c859376f64Greg Clayton Log *log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 575061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton 5762d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 57775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 57875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 57975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 58075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::WriteRegister (name = \"%s\", value = ", reg_info->name); 581997b1e82f098a8b748b490d1ae6d0bbe597a59d5Greg Clayton reg_value.Dump(&strm, reg_info, false, false, eFormatDefault); 58275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString (", context = "); 58375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 58475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString(strm.GetData()); 58575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 586c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 58775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool must_replace = true; 58875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton SetRegisterValue (*reg_info, reg_value); 589888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 590888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton switch (context.type) 591888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 592888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextInvalid: 593888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextReadOpcode: 594888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextImmediate: 595888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustBaseRegister: 596888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterPlusOffset: 597888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustPC: 598888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterStore: 599888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterLoad: 600888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAbsoluteBranchRegister: 601888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextSupervisorCall: 602888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextTableBranchReadMemory: 603888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextWriteRegisterRandomBits: 604888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextWriteMemoryRandomBits: 605c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton case EmulateInstruction::eContextArithmetic: 606888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdvancePC: 607888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextReturnFromException: 608888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextPushRegisterOnStack: 60975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// { 61075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 61175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// if (reg_num != LLDB_INVALID_REGNUM) 61275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// { 61375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// const bool can_replace_only_if_unspecified = true; 61475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// 61575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// m_curr_row.SetRegisterLocationToUndefined (reg_num, 61675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// can_replace_only_if_unspecified, 61775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// can_replace_only_if_unspecified); 618a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda// m_curr_row_modified = true; 61975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// } 62075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// } 621888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 6223063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 6236ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda case EmulateInstruction::eContextRelativeBranchImmediate: 6246ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 6256ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 6266ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 6276ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda m_curr_insn_is_branch_immediate = true; 6286ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 6296ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 6306ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda break; 6316ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 632888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextPopRegisterOffStack: 6333063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 63475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 63575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (reg_num != LLDB_INVALID_REGNUM) 6363063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 63768fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToSame (reg_num, must_replace); 638a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 639d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda m_curr_insn_restored_a_register = true; 6403063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 6413063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 642888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 643888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 64475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton case EmulateInstruction::eContextSetFramePointer: 64575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (!m_fp_is_cfa) 64675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 64775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_fp_is_cfa = true; 64875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_cfa_reg_info = *reg_info; 64975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t cfa_reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 65075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton assert (cfa_reg_num != LLDB_INVALID_REGNUM); 65168fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFARegister(cfa_reg_num); 65268fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFAOffset(m_initial_sp - reg_value.GetAsUInt64()); 653a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 65475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 65575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton break; 65675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 657888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustStackPointer: 65875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // If we have created a frame using the frame pointer, don't follow 65975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // subsequent adjustments to the stack pointer. 66075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (!m_fp_is_cfa) 66175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 66268fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFAOffset (m_initial_sp - reg_value.GetAsUInt64()); 663a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 66475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 665888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 666888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 667888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return true; 668888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 669888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 670888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 671