UnwindAssemblyInstEmulation.cpp revision 6ca5be3cf818f753b64efe9b3da91d1d78d2f901
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 111a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda bool prologue_complete = false; // true if we have finished prologue setup 1126ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 113a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda bool reinstate_prologue_next_instruction = false; // Next iteration, re-install the prologue row of CFI 1146ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 1156ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda bool last_instruction_restored_return_addr_reg = false; // re-install the prologue row of CFI if the next instruction is a branch immediate 1166ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason 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; 1403063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst = inst_list.GetInstructionAtIndex (idx).get(); 1413063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton if (inst) 1423063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 1432d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 14475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 14575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 1460fef968c843be422d6facc2e8d54d8471eee88edGreg Clayton inst->Dump(&strm, inst_list.GetMaxOpcocdeByteSize (), show_address, show_bytes, NULL); 14775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 14875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 1493063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 1503063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_inst_emulator_ap->SetInstruction (inst->GetOpcode(), 1513063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst->GetAddress(), 152567e7f3ba16eb48cb9fd6a2f26f2f7269eb6983cGreg Clayton exe_ctx.GetTargetPtr()); 1533063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 1543063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_inst_emulator_ap->EvaluateInstruction (eEmulateInstructionOptionIgnoreConditions); 155a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 156a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Were there any changes to the CFI while evaluating this instruction? 157a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (m_curr_row_modified) 15875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 159a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda reinstate_prologue_next_instruction = false; 16068fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetOffset (inst->GetAddress().GetFileAddress() + inst->GetOpcode().GetByteSize() - base_addr); 16175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // Append the new row 16275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.AppendRow (m_curr_row); 16368fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda 164a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Allocate a new Row for m_curr_row, copy the current state into it 16568fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 16668fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda *newrow = *m_curr_row.get(); 16768fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row.reset(newrow); 168a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 169a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda instructions_since_last_prologue_insn = 0; 170a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 171a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // If the caller's pc is "same", we've just executed an epilogue and we return to the caller 172a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // after this instruction completes executing. 173a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // If there are any instructions past this, there must have been flow control over this 174a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // epilogue so we'll reinstate the original prologue setup instructions. 175a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda UnwindPlan::Row::RegisterLocation pc_regloc; 1766ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda UnwindPlan::Row::RegisterLocation ra_regloc; 177a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (prologue_complete 178a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda && pc_reg_num != LLDB_INVALID_REGNUM 179a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda && m_curr_row->GetRegisterInfo (pc_reg_num, pc_regloc) 180a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda && pc_regloc.IsSame()) 181a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 182a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (log && log->GetVerbose()) 183a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- pc is <same>, restore prologue instructions."); 184a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda reinstate_prologue_next_instruction = true; 185a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 1866ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda else if (prologue_complete 1876ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda && ra_reg_num != LLDB_INVALID_REGNUM 1886ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda && m_curr_row->GetRegisterInfo (ra_reg_num, ra_regloc) 1896ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda && ra_regloc.IsSame()) 1906ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 1916ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda if (log && log->GetVerbose()) 1926ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- lr is <same>, restore prologue instruction if the next instruction is a branch immediate."); 1936ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda last_instruction_restored_return_addr_reg = true; 1946ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 195a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 196a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda else 197a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 198a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // If the previous instruction was a return-to-caller (epilogue), and we're still executing 199a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // instructions in this function, there must be a code path that jumps over that epilogue. 2006ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda // Also detect the case where we epilogue & branch imm to another function (tail-call opt) 2016ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda // instead of a normal pop lr-into-pc exit. 202a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Reinstate the frame setup from the prologue. 2036ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda if (reinstate_prologue_next_instruction 2046ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda || (m_curr_insn_is_branch_immediate && last_instruction_restored_return_addr_reg)) 205a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 206a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (log && log->GetVerbose()) 207a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- Reinstating prologue instruction set"); 208a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 209a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda *newrow = *prologue_completed_row.get(); 210a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row.reset(newrow); 211a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row->SetOffset (inst->GetAddress().GetFileAddress() + inst->GetOpcode().GetByteSize() - base_addr); 212a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda unwind_plan.AppendRow(m_curr_row); 213a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 214a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda newrow = new UnwindPlan::Row; 215a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda *newrow = *m_curr_row.get(); 216a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row.reset(newrow); 217a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 218a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda reinstate_prologue_next_instruction = false; 2196ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda last_instruction_restored_return_addr_reg = false; 2206ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda m_curr_insn_is_branch_immediate = false; 221a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 222a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 2236ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda // clear both of these if either one wasn't set 2246ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda if (last_instruction_restored_return_addr_reg) 2256ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 2266ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda last_instruction_restored_return_addr_reg = false; 2276ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 2286ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda if (m_curr_insn_is_branch_immediate) 2296ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 2306ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda m_curr_insn_is_branch_immediate = false; 2316ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 2326ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 233a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // If we haven't seen any prologue instructions for a while (4 instructions in a row), 234a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // the function prologue has probably completed. Save a copy of that Row. 235a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (prologue_complete == false && instructions_since_last_prologue_insn++ > 3) 236a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 237a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda prologue_complete = true; 238a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 239a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda *newrow = *m_curr_row.get(); 240a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda prologue_completed_row.reset(newrow); 241a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (log && log->GetVerbose()) 242a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- prologue has been set up, saving a copy."); 243a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 24475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 2453063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 246888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 247888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 248888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 24975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 2502d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 25175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 25275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 253f4124deeb9532044a38c0774ced872f2709347daGreg Clayton lldb::addr_t base_addr = range.GetBaseAddress().GetLoadAddress(thread.CalculateTarget().get()); 25475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.Printf ("Resulting unwind rows for [0x%llx - 0x%llx):", base_addr, base_addr + range.GetByteSize()); 25575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.Dump(strm, &thread, base_addr); 25675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 25775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 25875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return unwind_plan.GetRowCount() > 0; 259888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 260f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 261f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 262f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 263f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 264888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::GetFastUnwindPlan (AddressRange& func, 265888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Thread& thread, 266888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton UnwindPlan &unwind_plan) 267f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 268f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 269f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 270f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 271f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 272888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::FirstNonPrologueInsn (AddressRange& func, 273f4124deeb9532044a38c0774ced872f2709347daGreg Clayton const ExecutionContext &exe_ctx, 274888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Address& first_non_prologue_insn) 275f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 276f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 277f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 278f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 2798badcb2503ed2e2884a48f66099c1d48494817f4Greg ClaytonUnwindAssembly * 280f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::CreateInstance (const ArchSpec &arch) 281f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 282061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton std::auto_ptr<EmulateInstruction> inst_emulator_ap (EmulateInstruction::FindPlugin (arch, eInstructionTypePrologueEpilogue, NULL)); 283888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton // Make sure that all prologue instructions are handled 284888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton if (inst_emulator_ap.get()) 285888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return new UnwindAssemblyInstEmulation (arch, inst_emulator_ap.release()); 286f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return NULL; 287f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 288f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 289f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 290f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//------------------------------------------------------------------ 291f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// PluginInterface protocol in UnwindAssemblyParser_x86 292f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//------------------------------------------------------------------ 293f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 294f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 295f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginName() 296f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 297f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "UnwindAssemblyInstEmulation"; 298f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 299f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 300f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 301f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetShortPluginName() 302f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 303f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "unwindassembly.inst-emulation"; 304f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 305f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 306f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 307f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonuint32_t 308f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginVersion() 309f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 310f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return 1; 311f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 312f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 313f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonvoid 314f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::Initialize() 315f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 316f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton PluginManager::RegisterPlugin (GetPluginNameStatic(), 317f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton GetPluginDescriptionStatic(), 318f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton CreateInstance); 319f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 320f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 321f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonvoid 322f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::Terminate() 323f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 324f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton PluginManager::UnregisterPlugin (CreateInstance); 325f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 326f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 327f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 328f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 329f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginNameStatic() 330f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 331f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "UnwindAssemblyInstEmulation"; 332f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 333f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 334f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 335f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginDescriptionStatic() 336f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 337f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "Instruction emulation based unwind information."; 338f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 339888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 340888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 341c07d451bb046e47215bd73fda0235362cc6b1a47Greg Claytonuint64_t 342061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::MakeRegisterKindValuePair (const RegisterInfo ®_info) 343c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 344c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton uint32_t reg_kind, reg_num; 345061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (EmulateInstruction::GetBestRegisterKindAndNumber (®_info, reg_kind, reg_num)) 346c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton return (uint64_t)reg_kind << 24 | reg_num; 347c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton return 0ull; 348c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 349c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 350c07d451bb046e47215bd73fda0235362cc6b1a47Greg Claytonvoid 351061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::SetRegisterValue (const RegisterInfo ®_info, const RegisterValue ®_value) 352c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 353c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton m_register_values[MakeRegisterKindValuePair (reg_info)] = reg_value; 354c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 355c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 356061b79dbf1fefaf157d414747e98a463a0f32edaGreg Claytonbool 357061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::GetRegisterValue (const RegisterInfo ®_info, RegisterValue ®_value) 358c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 359c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton const uint64_t reg_id = MakeRegisterKindValuePair (reg_info); 360c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton RegisterValueMap::const_iterator pos = m_register_values.find(reg_id); 361c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton if (pos != m_register_values.end()) 362061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton { 363061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value = pos->second; 364061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return true; // We had a real value that comes from an opcode that wrote 365061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton // to it... 366061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton } 367061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton // We are making up a value that is recognizable... 368061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value.SetUInt(reg_id, reg_info.byte_size); 369061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return false; 370c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 371c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 372888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 373888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonsize_t 374888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::ReadMemory (EmulateInstruction *instruction, 375888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 376888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 377888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton lldb::addr_t addr, 378888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *dst, 379888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton size_t dst_len) 380888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 38175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 38275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 3832d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 38475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 38575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 386851e30ec6a1b1d2c154bb7d69ed0d05b5fd14705Greg Clayton strm.Printf ("UnwindAssemblyInstEmulation::ReadMemory (addr = 0x%16.16llx, dst = %p, dst_len = %llu, context = ", 38775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton addr, 38875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton dst, 389851e30ec6a1b1d2c154bb7d69ed0d05b5fd14705Greg Clayton (uint64_t)dst_len); 39075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 39175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData ()); 39275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 393b454db72811f6417878b42be816c5cbbea48703cJason Molenda memset (dst, 0, dst_len); 394888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return dst_len; 395888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 396888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 397888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonsize_t 398888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction, 399888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 400888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 401888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton lldb::addr_t addr, 402888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const void *dst, 403888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton size_t dst_len) 404888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 40575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (baton && dst && dst_len) 40675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->WriteMemory (instruction, context, addr, dst, dst_len); 40775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return 0; 40875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 40975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 41075906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonsize_t 41175906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction, 41275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const EmulateInstruction::Context &context, 41375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton lldb::addr_t addr, 41475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const void *dst, 41575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton size_t dst_len) 41675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 417888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton DataExtractor data (dst, 418888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton dst_len, 419888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton instruction->GetArchitecture ().GetByteOrder(), 420888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton instruction->GetArchitecture ().GetAddressByteSize()); 421888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 42275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 42375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 4242d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 42575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 42675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 42775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 42875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString ("UnwindAssemblyInstEmulation::WriteMemory ("); 42975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton data.Dump(&strm, 0, eFormatBytes, 1, dst_len, UINT32_MAX, addr, 0, 0); 43075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString (", context = "); 43175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 43275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 43375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 4343063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 43575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool can_replace = true; 43675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool cant_replace = false; 43775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 4383063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton switch (context.type) 4393063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 440061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton default: 4413063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextInvalid: 4423063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextReadOpcode: 4433063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextImmediate: 4443063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustBaseRegister: 4453063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterPlusOffset: 4463063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustPC: 4473063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterStore: 4483063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterLoad: 4493063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRelativeBranchImmediate: 4503063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAbsoluteBranchRegister: 4513063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextSupervisorCall: 4523063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextTableBranchReadMemory: 4533063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextWriteRegisterRandomBits: 4543063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextWriteMemoryRandomBits: 4553063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextArithmetic: 4563063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdvancePC: 4573063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextReturnFromException: 4583063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextPopRegisterOffStack: 4593063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustStackPointer: 4603063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 4613063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 4623063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextPushRegisterOnStack: 4633063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 46475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton uint32_t reg_num = LLDB_INVALID_REGNUM; 46575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton bool is_return_address_reg = false; 46675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t unwind_reg_kind = m_unwind_plan_ptr->GetRegisterKind(); 46775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (context.info_type == EmulateInstruction::eInfoTypeRegisterToRegisterPlusOffset) 46875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 46975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton reg_num = context.info.RegisterToRegisterPlusOffset.data_reg.kinds[unwind_reg_kind]; 47075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (context.info.RegisterToRegisterPlusOffset.data_reg.kinds[eRegisterKindGeneric] == LLDB_REGNUM_GENERIC_RA) 47175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton is_return_address_reg = true; 47275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 47375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton else 47475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 47575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton assert (!"unhandled case, add code to handle this!"); 47675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 47775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 47875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (reg_num != LLDB_INVALID_REGNUM) 47975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 48075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (m_pushed_regs.find (reg_num) == m_pushed_regs.end()) 4813063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 48275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_pushed_regs[reg_num] = addr; 48375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const int32_t offset = addr - m_initial_sp; 48468fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToAtCFAPlusOffset (reg_num, offset, cant_replace); 485a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 48675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (is_return_address_reg) 48775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 48875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // This push was pushing the return address register, 48975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // so this is also how we will unwind the PC... 49075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton RegisterInfo pc_reg_info; 49175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (instruction->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC, pc_reg_info)) 49275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 49375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton uint32_t pc_reg_num = pc_reg_info.kinds[unwind_reg_kind]; 49475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (pc_reg_num != LLDB_INVALID_REGNUM) 495a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 49668fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToAtCFAPlusOffset (pc_reg_num, offset, can_replace); 497a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 498a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 49975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 50075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 5013063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 50275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 5033063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 5043063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 5053063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 5063063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 5073063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 508888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return dst_len; 509888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 510888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 511888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonbool 512888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction, 513888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 514061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterInfo *reg_info, 515061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton RegisterValue ®_value) 516888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 51775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 518061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (baton && reg_info) 51975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->ReadRegister (instruction, reg_info, reg_value); 52075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 52175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 52275906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonbool 52375906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction, 52475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterInfo *reg_info, 52575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton RegisterValue ®_value) 52675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 52775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton bool synthetic = GetRegisterValue (*reg_info, reg_value); 528888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 52975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 53075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 5312d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 53275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 53375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 53475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 535061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::ReadRegister (name = \"%s\") => synthetic_value = %i, value = ", reg_info->name, synthetic); 536997b1e82f098a8b748b490d1ae6d0bbe597a59d5Greg Clayton reg_value.Dump(&strm, reg_info, false, false, eFormatDefault); 53775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString(strm.GetData()); 538061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton } 539888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return true; 540888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 541888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 542888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonbool 543888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction, 544888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 545888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 546061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterInfo *reg_info, 547061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterValue ®_value) 548888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 54975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (baton && reg_info) 55075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->WriteRegister (instruction, context, reg_info, reg_value); 55175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 55275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 55375906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonbool 55475906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction, 55575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const EmulateInstruction::Context &context, 55675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterInfo *reg_info, 55775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterValue ®_value) 55875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 55975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 560061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton 5612d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 56275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 56375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 56475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 56575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::WriteRegister (name = \"%s\", value = ", reg_info->name); 566997b1e82f098a8b748b490d1ae6d0bbe597a59d5Greg Clayton reg_value.Dump(&strm, reg_info, false, false, eFormatDefault); 56775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString (", context = "); 56875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 56975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString(strm.GetData()); 57075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 571c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 57275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool must_replace = true; 57375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton SetRegisterValue (*reg_info, reg_value); 574888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 575888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton switch (context.type) 576888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 577061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton default: 578888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextInvalid: 579888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextReadOpcode: 580888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextImmediate: 581888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustBaseRegister: 582888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterPlusOffset: 583888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustPC: 584888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterStore: 585888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterLoad: 586888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAbsoluteBranchRegister: 587888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextSupervisorCall: 588888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextTableBranchReadMemory: 589888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextWriteRegisterRandomBits: 590888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextWriteMemoryRandomBits: 591c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton case EmulateInstruction::eContextArithmetic: 592888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdvancePC: 593888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextReturnFromException: 594888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextPushRegisterOnStack: 59575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// { 59675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 59775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// if (reg_num != LLDB_INVALID_REGNUM) 59875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// { 59975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// const bool can_replace_only_if_unspecified = true; 60075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// 60175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// m_curr_row.SetRegisterLocationToUndefined (reg_num, 60275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// can_replace_only_if_unspecified, 60375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// can_replace_only_if_unspecified); 604a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda// m_curr_row_modified = true; 60575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// } 60675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// } 607888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 6083063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 6096ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda case EmulateInstruction::eContextRelativeBranchImmediate: 6106ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 6116ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 6126ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda { 6136ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda m_curr_insn_is_branch_immediate = true; 6146ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 6156ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda } 6166ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda break; 6176ca5be3cf818f753b64efe9b3da91d1d78d2f901Jason Molenda 618888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextPopRegisterOffStack: 6193063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 62075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 62175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (reg_num != LLDB_INVALID_REGNUM) 6223063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 62368fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToSame (reg_num, must_replace); 624a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 6253063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 6263063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 627888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 628888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 62975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton case EmulateInstruction::eContextSetFramePointer: 63075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (!m_fp_is_cfa) 63175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 63275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_fp_is_cfa = true; 63375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_cfa_reg_info = *reg_info; 63475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t cfa_reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 63575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton assert (cfa_reg_num != LLDB_INVALID_REGNUM); 63668fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFARegister(cfa_reg_num); 63768fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFAOffset(m_initial_sp - reg_value.GetAsUInt64()); 638a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 63975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 64075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton break; 64175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 642888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustStackPointer: 64375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // If we have created a frame using the frame pointer, don't follow 64475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // subsequent adjustments to the stack pointer. 64575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (!m_fp_is_cfa) 64675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 64768fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFAOffset (m_initial_sp - reg_value.GetAsUInt64()); 648a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 64975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 650888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 651888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 652888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return true; 653888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 654888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 655888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 656