UnwindAssemblyInstEmulation.cpp revision d43f40d21ad5fcde163071362cfeca55352df632
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" 1749ce8969d3154e1560106cfe530444c09410f217Greg Clayton#include "lldb/Core/DataExtractor.h" 18888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton#include "lldb/Core/Disassembler.h" 19888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton#include "lldb/Core/Error.h" 2075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton#include "lldb/Core/Log.h" 21f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Core/PluginManager.h" 2275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton#include "lldb/Core/StreamString.h" 23f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Target/ExecutionContext.h" 24f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Target/Process.h" 25f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Target/Thread.h" 26f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton#include "lldb/Target/Target.h" 27f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 28f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonusing namespace lldb; 29f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonusing namespace lldb_private; 30f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 31f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 32f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 33f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//----------------------------------------------------------------------------------------------- 347fad24a9fd7226016b28fef78930501a1bef898cJason Molenda// UnwindAssemblyInstEmulation method definitions 35f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//----------------------------------------------------------------------------------------------- 36f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 37f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 38888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly (AddressRange& range, 39888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Thread& thread, 40888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton UnwindPlan& unwind_plan) 41f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 42888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton if (range.GetByteSize() > 0 && 43888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton range.GetBaseAddress().IsValid() && 44888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_inst_emulator_ap.get()) 45888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 4675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 4775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // The the instruction emulation subclass setup the unwind plan for the 4875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // first instruction. 4975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_inst_emulator_ap->CreateFunctionEntryUnwind (unwind_plan); 5075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 5175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // CreateFunctionEntryUnwind should have created the first row. If it 5275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // doesn't, then we are done. 5375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (unwind_plan.GetRowCount() == 0) 5475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 55888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 56888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton ExecutionContext exe_ctx; 57888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton thread.CalculateExecutionContext(exe_ctx); 58888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton DisassemblerSP disasm_sp (Disassembler::DisassembleRange (m_arch, 59888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton NULL, 60888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton exe_ctx, 61888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton range)); 6275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 6375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 6475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 65888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton if (disasm_sp) 66888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 67888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 68888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_range_ptr = ⦥ 69888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_thread_ptr = &thread; 70888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton m_unwind_plan_ptr = &unwind_plan; 71888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 72888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const uint32_t addr_byte_size = m_arch.GetAddressByteSize(); 73888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const bool show_address = true; 74888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const bool show_bytes = true; 7575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_inst_emulator_ap->GetRegisterInfo (unwind_plan.GetRegisterKind(), 7675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.GetInitialCFARegister(), 7775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_cfa_reg_info); 7875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 7975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_fp_is_cfa = false; 8075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_register_values.clear(); 8175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_pushed_regs.clear(); 8275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 837fad24a9fd7226016b28fef78930501a1bef898cJason Molenda // Initialize the CFA with a known value. In the 32 bit case 847fad24a9fd7226016b28fef78930501a1bef898cJason Molenda // it will be 0x80000000, and in the 64 bit case 0x8000000000000000. 857fad24a9fd7226016b28fef78930501a1bef898cJason Molenda // We use the address byte size to be safe for any future addresss sizes 86061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton m_initial_sp = (1ull << ((addr_byte_size * 8) - 1)); 872f085c6ca2895663687dca704589478ff040b849Greg Clayton RegisterValue cfa_reg_value; 882f085c6ca2895663687dca704589478ff040b849Greg Clayton cfa_reg_value.SetUInt (m_initial_sp, m_cfa_reg_info.byte_size); 892f085c6ca2895663687dca704589478ff040b849Greg Clayton SetRegisterValue (m_cfa_reg_info, cfa_reg_value); 9068fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda 91888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const InstructionList &inst_list = disasm_sp->GetInstructionList (); 92888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const size_t num_instructions = inst_list.GetSize(); 9368fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda 943063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton if (num_instructions > 0) 95888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 963063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton Instruction *inst = inst_list.GetInstructionAtIndex (0).get(); 973063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton const addr_t base_addr = inst->GetAddress().GetFileAddress(); 98a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 99a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Make a copy of the current instruction Row and save it in m_curr_row 100a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // so we can add updates as we process the instructions. 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 107a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Once we've seen the initial prologue instructions complete, save a 108a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // copy of the CFI at that point into prologue_completed_row for possible 109a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // use later. 110a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda int instructions_since_last_prologue_insn = 0; // # of insns since last CFI was update 1116ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 112a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda bool reinstate_prologue_next_instruction = false; // Next iteration, re-install the prologue row of CFI 1136ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 1146ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda bool last_instruction_restored_return_addr_reg = false; // re-install the prologue row of CFI if the next instruction is a branch immediate 1156ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 116d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda bool return_address_register_has_been_saved = false; // if we've seen the ra register get saved yet 117d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda 118a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda UnwindPlan::RowSP prologue_completed_row; // copy of prologue row of CFI 119a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 120a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // cache the pc register number (in whatever register numbering this UnwindPlan uses) for 121a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // quick reference during instruction parsing. 122a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda uint32_t pc_reg_num = LLDB_INVALID_REGNUM; 123a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda RegisterInfo pc_reg_info; 124a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (m_inst_emulator_ap->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC, pc_reg_info)) 125a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda pc_reg_num = pc_reg_info.kinds[unwind_plan.GetRegisterKind()]; 1266ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda else 1276ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda pc_reg_num = LLDB_INVALID_REGNUM; 128a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 1296ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda // cache the return address register number (in whatever register numbering this UnwindPlan uses) for 1306ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda // quick reference during instruction parsing. 1316ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda uint32_t ra_reg_num = LLDB_INVALID_REGNUM; 1326ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda RegisterInfo ra_reg_info; 1336ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda if (m_inst_emulator_ap->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_RA, ra_reg_info)) 1346ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda ra_reg_num = ra_reg_info.kinds[unwind_plan.GetRegisterKind()]; 1356ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda else 1366ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda ra_reg_num = LLDB_INVALID_REGNUM; 137a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 1383063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton for (size_t idx=0; idx<num_instructions; ++idx) 1393063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 140a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = false; 141d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda m_curr_insn_restored_a_register = false; 1423063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst = inst_list.GetInstructionAtIndex (idx).get(); 1433063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton if (inst) 1443063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 1452d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 14675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 14775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 1480fef968c843be422d6facc2e8d54d8471eee88edGreg Clayton inst->Dump(&strm, inst_list.GetMaxOpcocdeByteSize (), show_address, show_bytes, NULL); 14975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 15075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 1513063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 1523063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_inst_emulator_ap->SetInstruction (inst->GetOpcode(), 1533063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst->GetAddress(), 154567e7f3ba16eb48cb9fd6a2f26f2f7269eb6983cGreg Clayton exe_ctx.GetTargetPtr()); 1553063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 1563063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_inst_emulator_ap->EvaluateInstruction (eEmulateInstructionOptionIgnoreConditions); 157a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 158a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Were there any changes to the CFI while evaluating this instruction? 159a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (m_curr_row_modified) 16075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 161a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda reinstate_prologue_next_instruction = false; 16268fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetOffset (inst->GetAddress().GetFileAddress() + inst->GetOpcode().GetByteSize() - base_addr); 16375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // Append the new row 16475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.AppendRow (m_curr_row); 16568fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda 166a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Allocate a new Row for m_curr_row, copy the current state into it 16768fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 16868fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda *newrow = *m_curr_row.get(); 16968fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row.reset(newrow); 170a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 171d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // If m_curr_insn_restored_a_register == true, we're looking at an epilogue instruction. 172d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // Set instructions_since_last_prologue_insn to a very high number so we don't append 173d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // any of these epilogue instructions to our prologue_complete row. 174d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda if (m_curr_insn_restored_a_register == false && instructions_since_last_prologue_insn < 8) 175d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda instructions_since_last_prologue_insn = 0; 176d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda else 177d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda instructions_since_last_prologue_insn = 99; 178d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda 179d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda UnwindPlan::Row::RegisterLocation pc_regloc; 180d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda UnwindPlan::Row::RegisterLocation ra_regloc; 181d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda 182d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // While parsing the instructions of this function, if we've ever 183d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // seen the return address register (aka lr on arm) in a non-IsSame() state, 184d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // it has been saved on the stack. If it's evern back to IsSame(), we've 185d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // executed an epilogue. 186d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda if (ra_reg_num != LLDB_INVALID_REGNUM 187d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda && m_curr_row->GetRegisterInfo (ra_reg_num, ra_regloc) 188d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda && !ra_regloc.IsSame()) 189d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda { 190d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda return_address_register_has_been_saved = true; 191d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda } 192a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 193a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // If the caller's pc is "same", we've just executed an epilogue and we return to the caller 194a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // after this instruction completes executing. 195a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // If there are any instructions past this, there must have been flow control over this 196a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // epilogue so we'll reinstate the original prologue setup instructions. 197d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda if (prologue_completed_row.get() 198a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda && pc_reg_num != LLDB_INVALID_REGNUM 199a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda && m_curr_row->GetRegisterInfo (pc_reg_num, pc_regloc) 200a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda && pc_regloc.IsSame()) 201a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 202a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (log && log->GetVerbose()) 203a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- pc is <same>, restore prologue instructions."); 204a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda reinstate_prologue_next_instruction = true; 205a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 206d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda else if (prologue_completed_row.get() 207d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda && return_address_register_has_been_saved 2086ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda && ra_reg_num != LLDB_INVALID_REGNUM 2096ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda && m_curr_row->GetRegisterInfo (ra_reg_num, ra_regloc) 2106ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda && ra_regloc.IsSame()) 2116ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 2126ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda if (log && log->GetVerbose()) 2136ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- lr is <same>, restore prologue instruction if the next instruction is a branch immediate."); 2146ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda last_instruction_restored_return_addr_reg = true; 2156ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 216a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 217a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda else 218a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 219a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // If the previous instruction was a return-to-caller (epilogue), and we're still executing 220a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // instructions in this function, there must be a code path that jumps over that epilogue. 2216ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda // Also detect the case where we epilogue & branch imm to another function (tail-call opt) 2226ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda // instead of a normal pop lr-into-pc exit. 223a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Reinstate the frame setup from the prologue. 2246ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda if (reinstate_prologue_next_instruction 2256ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda || (m_curr_insn_is_branch_immediate && last_instruction_restored_return_addr_reg)) 226a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 227a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (log && log->GetVerbose()) 228a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- Reinstating prologue instruction set"); 229a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 230a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda *newrow = *prologue_completed_row.get(); 231a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row.reset(newrow); 232a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row->SetOffset (inst->GetAddress().GetFileAddress() + inst->GetOpcode().GetByteSize() - base_addr); 233a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda unwind_plan.AppendRow(m_curr_row); 234a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 235a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda newrow = new UnwindPlan::Row; 236a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda *newrow = *m_curr_row.get(); 237a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row.reset(newrow); 238a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 239a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda reinstate_prologue_next_instruction = false; 2406ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda last_instruction_restored_return_addr_reg = false; 2416ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda m_curr_insn_is_branch_immediate = false; 242a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 243a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 2446ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda // clear both of these if either one wasn't set 2456ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda if (last_instruction_restored_return_addr_reg) 2466ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 2476ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda last_instruction_restored_return_addr_reg = false; 2486ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 2496ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda if (m_curr_insn_is_branch_immediate) 2506ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 2516ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda m_curr_insn_is_branch_immediate = false; 2526ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 2536ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 254d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // Stop updating the prologue instructions if we've seen 8 non-prologue instructions 255d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda // in a row. 256d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda if (instructions_since_last_prologue_insn++ < 8) 257a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 258a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 259a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda *newrow = *m_curr_row.get(); 260a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda prologue_completed_row.reset(newrow); 261a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (log && log->GetVerbose()) 262d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- saving a copy of the current row as the prologue row."); 263a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 26475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 2653063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 266888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 267888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 268888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 26975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 2702d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 27175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 27275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 273f4124deeb9532044a38c0774ced872f2709347daGreg Clayton lldb::addr_t base_addr = range.GetBaseAddress().GetLoadAddress(thread.CalculateTarget().get()); 27475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.Printf ("Resulting unwind rows for [0x%llx - 0x%llx):", base_addr, base_addr + range.GetByteSize()); 27575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.Dump(strm, &thread, base_addr); 27675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 27775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 27875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return unwind_plan.GetRowCount() > 0; 279888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 280f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 281f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 282f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 283f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 284888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::GetFastUnwindPlan (AddressRange& func, 285888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Thread& thread, 286888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton UnwindPlan &unwind_plan) 287f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 288f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 289f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 290f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 291f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 292888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::FirstNonPrologueInsn (AddressRange& func, 293f4124deeb9532044a38c0774ced872f2709347daGreg Clayton const ExecutionContext &exe_ctx, 294888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Address& first_non_prologue_insn) 295f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 296f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 297f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 298f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 2998badcb2503ed2e2884a48f66099c1d48494817f4Greg ClaytonUnwindAssembly * 300f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::CreateInstance (const ArchSpec &arch) 301f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 302061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton std::auto_ptr<EmulateInstruction> inst_emulator_ap (EmulateInstruction::FindPlugin (arch, eInstructionTypePrologueEpilogue, NULL)); 303888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton // Make sure that all prologue instructions are handled 304888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton if (inst_emulator_ap.get()) 305888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return new UnwindAssemblyInstEmulation (arch, inst_emulator_ap.release()); 306f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return NULL; 307f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 308f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 309f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 310f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//------------------------------------------------------------------ 311f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// PluginInterface protocol in UnwindAssemblyParser_x86 312f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//------------------------------------------------------------------ 313f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 314f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 315f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginName() 316f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 317f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "UnwindAssemblyInstEmulation"; 318f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 319f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 320f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 321f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetShortPluginName() 322f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 323f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "unwindassembly.inst-emulation"; 324f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 325f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 326f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 327f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonuint32_t 328f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginVersion() 329f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 330f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return 1; 331f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 332f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 333f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonvoid 334f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::Initialize() 335f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 336f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton PluginManager::RegisterPlugin (GetPluginNameStatic(), 337f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton GetPluginDescriptionStatic(), 338f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton CreateInstance); 339f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 340f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 341f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonvoid 342f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::Terminate() 343f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 344f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton PluginManager::UnregisterPlugin (CreateInstance); 345f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 346f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 347f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 348f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 349f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginNameStatic() 350f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 351f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "UnwindAssemblyInstEmulation"; 352f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 353f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 354f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 355f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginDescriptionStatic() 356f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 357f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "Instruction emulation based unwind information."; 358f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 359888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 360888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 361c07d451bb046e47215bd73fda0235362cc6b1a47Greg Claytonuint64_t 362061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::MakeRegisterKindValuePair (const RegisterInfo ®_info) 363c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 364c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton uint32_t reg_kind, reg_num; 365061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (EmulateInstruction::GetBestRegisterKindAndNumber (®_info, reg_kind, reg_num)) 366c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton return (uint64_t)reg_kind << 24 | reg_num; 367c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton return 0ull; 368c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 369c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 370c07d451bb046e47215bd73fda0235362cc6b1a47Greg Claytonvoid 371061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::SetRegisterValue (const RegisterInfo ®_info, const RegisterValue ®_value) 372c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 373c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton m_register_values[MakeRegisterKindValuePair (reg_info)] = reg_value; 374c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 375c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 376061b79dbf1fefaf157d414747e98a463a0f32edaGreg Claytonbool 377061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::GetRegisterValue (const RegisterInfo ®_info, RegisterValue ®_value) 378c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 379c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton const uint64_t reg_id = MakeRegisterKindValuePair (reg_info); 380c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton RegisterValueMap::const_iterator pos = m_register_values.find(reg_id); 381c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton if (pos != m_register_values.end()) 382061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton { 383061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value = pos->second; 384061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return true; // We had a real value that comes from an opcode that wrote 385061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton // to it... 386061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton } 387061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton // We are making up a value that is recognizable... 388061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value.SetUInt(reg_id, reg_info.byte_size); 389061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return false; 390c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 391c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 392888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 393888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonsize_t 394888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::ReadMemory (EmulateInstruction *instruction, 395888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 396888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 397888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton lldb::addr_t addr, 398888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *dst, 399888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton size_t dst_len) 400888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 40175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 40275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 4032d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 40475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 40575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 406851e30ec6a1b1d2c154bb7d69ed0d05b5fd14705Greg Clayton strm.Printf ("UnwindAssemblyInstEmulation::ReadMemory (addr = 0x%16.16llx, dst = %p, dst_len = %llu, context = ", 40775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton addr, 40875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton dst, 409851e30ec6a1b1d2c154bb7d69ed0d05b5fd14705Greg Clayton (uint64_t)dst_len); 41075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 41175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData ()); 41275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 413b454db72811f6417878b42be816c5cbbea48703cJason Molenda memset (dst, 0, dst_len); 414888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return dst_len; 415888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 416888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 417888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonsize_t 418888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction, 419888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 420888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 421888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton lldb::addr_t addr, 422888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const void *dst, 423888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton size_t dst_len) 424888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 42575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (baton && dst && dst_len) 42675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->WriteMemory (instruction, context, addr, dst, dst_len); 42775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return 0; 42875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 42975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 43075906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonsize_t 43175906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction, 43275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const EmulateInstruction::Context &context, 43375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton lldb::addr_t addr, 43475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const void *dst, 43575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton size_t dst_len) 43675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 437888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton DataExtractor data (dst, 438888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton dst_len, 439888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton instruction->GetArchitecture ().GetByteOrder(), 440888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton instruction->GetArchitecture ().GetAddressByteSize()); 441888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 44275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 44375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 4442d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 44575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 44675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 44775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 44875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString ("UnwindAssemblyInstEmulation::WriteMemory ("); 44975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton data.Dump(&strm, 0, eFormatBytes, 1, dst_len, UINT32_MAX, addr, 0, 0); 45075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString (", context = "); 45175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 45275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 45375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 4543063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 45575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool can_replace = true; 45675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool cant_replace = false; 45775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 4583063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton switch (context.type) 4593063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 460061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton default: 4613063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextInvalid: 4623063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextReadOpcode: 4633063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextImmediate: 4643063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustBaseRegister: 4653063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterPlusOffset: 4663063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustPC: 4673063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterStore: 4683063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterLoad: 4693063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRelativeBranchImmediate: 4703063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAbsoluteBranchRegister: 4713063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextSupervisorCall: 4723063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextTableBranchReadMemory: 4733063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextWriteRegisterRandomBits: 4743063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextWriteMemoryRandomBits: 4753063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextArithmetic: 4763063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdvancePC: 4773063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextReturnFromException: 4783063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextPopRegisterOffStack: 4793063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustStackPointer: 4803063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 4813063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 4823063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextPushRegisterOnStack: 4833063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 48475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton uint32_t reg_num = LLDB_INVALID_REGNUM; 48575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton bool is_return_address_reg = false; 48675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t unwind_reg_kind = m_unwind_plan_ptr->GetRegisterKind(); 48775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (context.info_type == EmulateInstruction::eInfoTypeRegisterToRegisterPlusOffset) 48875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 48975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton reg_num = context.info.RegisterToRegisterPlusOffset.data_reg.kinds[unwind_reg_kind]; 49075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (context.info.RegisterToRegisterPlusOffset.data_reg.kinds[eRegisterKindGeneric] == LLDB_REGNUM_GENERIC_RA) 49175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton is_return_address_reg = true; 49275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 49375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton else 49475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 49575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton assert (!"unhandled case, add code to handle this!"); 49675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 49775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 49875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (reg_num != LLDB_INVALID_REGNUM) 49975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 50075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (m_pushed_regs.find (reg_num) == m_pushed_regs.end()) 5013063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 50275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_pushed_regs[reg_num] = addr; 50375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const int32_t offset = addr - m_initial_sp; 50468fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToAtCFAPlusOffset (reg_num, offset, cant_replace); 505a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 50675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (is_return_address_reg) 50775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 50875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // This push was pushing the return address register, 50975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // so this is also how we will unwind the PC... 51075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton RegisterInfo pc_reg_info; 51175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (instruction->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC, pc_reg_info)) 51275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 51375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton uint32_t pc_reg_num = pc_reg_info.kinds[unwind_reg_kind]; 51475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (pc_reg_num != LLDB_INVALID_REGNUM) 515a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 51668fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToAtCFAPlusOffset (pc_reg_num, offset, can_replace); 517a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 518a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 51975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 52075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 5213063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 52275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 5233063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 5243063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 5253063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 5263063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 5273063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 528888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return dst_len; 529888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 530888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 531888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonbool 532888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction, 533888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 534061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterInfo *reg_info, 535061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton RegisterValue ®_value) 536888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 53775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 538061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (baton && reg_info) 53975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->ReadRegister (instruction, reg_info, reg_value); 54075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 54175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 54275906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonbool 54375906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction, 54475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterInfo *reg_info, 54575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton RegisterValue ®_value) 54675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 54775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton bool synthetic = GetRegisterValue (*reg_info, reg_value); 548888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 54975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 55075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 5512d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 55275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 55375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 55475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 555061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::ReadRegister (name = \"%s\") => synthetic_value = %i, value = ", reg_info->name, synthetic); 556997b1e82f098a8b748b490d1ae6d0bbe597a59d5Greg Clayton reg_value.Dump(&strm, reg_info, false, false, eFormatDefault); 55775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString(strm.GetData()); 558061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton } 559888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return true; 560888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 561888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 562888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonbool 563888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction, 564888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 565888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 566061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterInfo *reg_info, 567061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterValue ®_value) 568888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 56975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (baton && reg_info) 57075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->WriteRegister (instruction, context, reg_info, reg_value); 57175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 57275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 57375906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonbool 57475906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction, 57575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const EmulateInstruction::Context &context, 57675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterInfo *reg_info, 57775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterValue ®_value) 57875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 57975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 580061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton 5812d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 58275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 58375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 58475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 58575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::WriteRegister (name = \"%s\", value = ", reg_info->name); 586997b1e82f098a8b748b490d1ae6d0bbe597a59d5Greg Clayton reg_value.Dump(&strm, reg_info, false, false, eFormatDefault); 58775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString (", context = "); 58875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 58975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString(strm.GetData()); 59075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 591c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 59275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool must_replace = true; 59375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton SetRegisterValue (*reg_info, reg_value); 594888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 595888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton switch (context.type) 596888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 597061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton default: 598888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextInvalid: 599888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextReadOpcode: 600888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextImmediate: 601888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustBaseRegister: 602888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterPlusOffset: 603888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustPC: 604888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterStore: 605888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterLoad: 606888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAbsoluteBranchRegister: 607888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextSupervisorCall: 608888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextTableBranchReadMemory: 609888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextWriteRegisterRandomBits: 610888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextWriteMemoryRandomBits: 611c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton case EmulateInstruction::eContextArithmetic: 612888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdvancePC: 613888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextReturnFromException: 614888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextPushRegisterOnStack: 61575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// { 61675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 61775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// if (reg_num != LLDB_INVALID_REGNUM) 61875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// { 61975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// const bool can_replace_only_if_unspecified = true; 62075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// 62175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// m_curr_row.SetRegisterLocationToUndefined (reg_num, 62275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// can_replace_only_if_unspecified, 62375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// can_replace_only_if_unspecified); 624a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda// m_curr_row_modified = true; 62575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// } 62675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// } 627888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 6283063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 6296ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda case EmulateInstruction::eContextRelativeBranchImmediate: 6306ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 6316ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 6326ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 6336ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda m_curr_insn_is_branch_immediate = true; 6346ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 6356ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 6366ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda break; 6376ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 638888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextPopRegisterOffStack: 6393063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 64075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 64175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (reg_num != LLDB_INVALID_REGNUM) 6423063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 64368fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToSame (reg_num, must_replace); 644a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 645d43f40d21ad5fcde163071362cfeca55352df632Jason Molenda m_curr_insn_restored_a_register = true; 6463063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 6473063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 648888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 649888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 65075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton case EmulateInstruction::eContextSetFramePointer: 65175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (!m_fp_is_cfa) 65275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 65375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_fp_is_cfa = true; 65475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_cfa_reg_info = *reg_info; 65575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t cfa_reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 65675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton assert (cfa_reg_num != LLDB_INVALID_REGNUM); 65768fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFARegister(cfa_reg_num); 65868fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFAOffset(m_initial_sp - reg_value.GetAsUInt64()); 659a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 66075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 66175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton break; 66275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 663888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustStackPointer: 66475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // If we have created a frame using the frame pointer, don't follow 66575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // subsequent adjustments to the stack pointer. 66675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (!m_fp_is_cfa) 66775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 66868fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFAOffset (m_initial_sp - reg_value.GetAsUInt64()); 669a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 67075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 671888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 672888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 673888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return true; 674888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 675888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 676888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 677