UnwindAssemblyInstEmulation.cpp revision 49ce8969d3154e1560106cfe530444c09410f217
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 112a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda bool reinstate_prologue_next_instruction = false; // Next iteration, re-install the prologue row of CFI 113a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda UnwindPlan::RowSP prologue_completed_row; // copy of prologue row of CFI 114a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 115a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // cache the pc register number (in whatever register numbering this UnwindPlan uses) for 116a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // quick reference during instruction parsing. 117a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda uint32_t pc_reg_num = LLDB_INVALID_REGNUM; 118a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda RegisterInfo pc_reg_info; 119a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (m_inst_emulator_ap->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC, pc_reg_info)) 120a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda pc_reg_num = pc_reg_info.kinds[unwind_plan.GetRegisterKind()]; 121a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 122a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 1233063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton for (size_t idx=0; idx<num_instructions; ++idx) 1243063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 125a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = false; 1263063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst = inst_list.GetInstructionAtIndex (idx).get(); 1273063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton if (inst) 1283063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 1292d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 13075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 13175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 1320fef968c843be422d6facc2e8d54d8471eee88edGreg Clayton inst->Dump(&strm, inst_list.GetMaxOpcocdeByteSize (), show_address, show_bytes, NULL); 13375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 13475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 1353063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 1363063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_inst_emulator_ap->SetInstruction (inst->GetOpcode(), 1373063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton inst->GetAddress(), 138567e7f3ba16eb48cb9fd6a2f26f2f7269eb6983cGreg Clayton exe_ctx.GetTargetPtr()); 1393063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 1403063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton m_inst_emulator_ap->EvaluateInstruction (eEmulateInstructionOptionIgnoreConditions); 141a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 142a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Were there any changes to the CFI while evaluating this instruction? 143a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (m_curr_row_modified) 14475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 145a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda reinstate_prologue_next_instruction = false; 14668fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetOffset (inst->GetAddress().GetFileAddress() + inst->GetOpcode().GetByteSize() - base_addr); 14775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // Append the new row 14875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.AppendRow (m_curr_row); 14968fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda 150a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Allocate a new Row for m_curr_row, copy the current state into it 15168fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 15268fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda *newrow = *m_curr_row.get(); 15368fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row.reset(newrow); 154a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 155a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda instructions_since_last_prologue_insn = 0; 156a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 157a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // If the caller's pc is "same", we've just executed an epilogue and we return to the caller 158a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // after this instruction completes executing. 159a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // If there are any instructions past this, there must have been flow control over this 160a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // epilogue so we'll reinstate the original prologue setup instructions. 161a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda UnwindPlan::Row::RegisterLocation pc_regloc; 162a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (prologue_complete 163a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda && pc_reg_num != LLDB_INVALID_REGNUM 164a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda && m_curr_row->GetRegisterInfo (pc_reg_num, pc_regloc) 165a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda && pc_regloc.IsSame()) 166a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 167a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (log && log->GetVerbose()) 168a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- pc is <same>, restore prologue instructions."); 169a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda reinstate_prologue_next_instruction = true; 170a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 171a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 172a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda else 173a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 174a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // If the previous instruction was a return-to-caller (epilogue), and we're still executing 175a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // instructions in this function, there must be a code path that jumps over that epilogue. 176a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // Reinstate the frame setup from the prologue. 177a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (reinstate_prologue_next_instruction) 178a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 179a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (log && log->GetVerbose()) 180a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- Reinstating prologue instruction set"); 181a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 182a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda *newrow = *prologue_completed_row.get(); 183a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row.reset(newrow); 184a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row->SetOffset (inst->GetAddress().GetFileAddress() + inst->GetOpcode().GetByteSize() - base_addr); 185a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda unwind_plan.AppendRow(m_curr_row); 186a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 187a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda newrow = new UnwindPlan::Row; 188a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda *newrow = *m_curr_row.get(); 189a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row.reset(newrow); 190a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 191a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda reinstate_prologue_next_instruction = false; 192a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 193a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda 194a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // If we haven't seen any prologue instructions for a while (4 instructions in a row), 195a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda // the function prologue has probably completed. Save a copy of that Row. 196a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (prologue_complete == false && instructions_since_last_prologue_insn++ > 3) 197a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 198a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda prologue_complete = true; 199a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda UnwindPlan::Row *newrow = new UnwindPlan::Row; 200a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda *newrow = *m_curr_row.get(); 201a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda prologue_completed_row.reset(newrow); 202a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda if (log && log->GetVerbose()) 203a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda log->Printf("UnwindAssemblyInstEmulation::GetNonCallSiteUnwindPlanFromAssembly -- prologue has been set up, saving a copy."); 204a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 20575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 2063063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 207888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 208888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 209888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 21075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 2112d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 21275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 21375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 214f4124deeb9532044a38c0774ced872f2709347daGreg Clayton lldb::addr_t base_addr = range.GetBaseAddress().GetLoadAddress(thread.CalculateTarget().get()); 21575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.Printf ("Resulting unwind rows for [0x%llx - 0x%llx):", base_addr, base_addr + range.GetByteSize()); 21675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton unwind_plan.Dump(strm, &thread, base_addr); 21775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 21875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 21975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return unwind_plan.GetRowCount() > 0; 220888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 221f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 222f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 223f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 224f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 225888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::GetFastUnwindPlan (AddressRange& func, 226888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Thread& thread, 227888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton UnwindPlan &unwind_plan) 228f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 229f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 230f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 231f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 232f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonbool 233888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::FirstNonPrologueInsn (AddressRange& func, 234f4124deeb9532044a38c0774ced872f2709347daGreg Clayton const ExecutionContext &exe_ctx, 235888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton Address& first_non_prologue_insn) 236f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 237f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return false; 238f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 239f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 2408badcb2503ed2e2884a48f66099c1d48494817f4Greg ClaytonUnwindAssembly * 241f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::CreateInstance (const ArchSpec &arch) 242f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 243061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton std::auto_ptr<EmulateInstruction> inst_emulator_ap (EmulateInstruction::FindPlugin (arch, eInstructionTypePrologueEpilogue, NULL)); 244888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton // Make sure that all prologue instructions are handled 245888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton if (inst_emulator_ap.get()) 246888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return new UnwindAssemblyInstEmulation (arch, inst_emulator_ap.release()); 247f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return NULL; 248f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 249f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 250f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 251f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//------------------------------------------------------------------ 252f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton// PluginInterface protocol in UnwindAssemblyParser_x86 253f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton//------------------------------------------------------------------ 254f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 255f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 256f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginName() 257f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 258f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "UnwindAssemblyInstEmulation"; 259f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 260f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 261f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 262f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetShortPluginName() 263f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 264f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "unwindassembly.inst-emulation"; 265f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 266f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 267f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 268f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonuint32_t 269f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginVersion() 270f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 271f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return 1; 272f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 273f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 274f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonvoid 275f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::Initialize() 276f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 277f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton PluginManager::RegisterPlugin (GetPluginNameStatic(), 278f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton GetPluginDescriptionStatic(), 279f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton CreateInstance); 280f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 281f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 282f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonvoid 283f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::Terminate() 284f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 285f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton PluginManager::UnregisterPlugin (CreateInstance); 286f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 287f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 288f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 289f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 290f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginNameStatic() 291f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 292f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "UnwindAssemblyInstEmulation"; 293f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 294f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton 295f6e287a873007543f3b419a71546ab8f007be90bGreg Claytonconst char * 296f6e287a873007543f3b419a71546ab8f007be90bGreg ClaytonUnwindAssemblyInstEmulation::GetPluginDescriptionStatic() 297f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton{ 298f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton return "Instruction emulation based unwind information."; 299f6e287a873007543f3b419a71546ab8f007be90bGreg Clayton} 300888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 301888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 302c07d451bb046e47215bd73fda0235362cc6b1a47Greg Claytonuint64_t 303061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::MakeRegisterKindValuePair (const RegisterInfo ®_info) 304c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 305c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton uint32_t reg_kind, reg_num; 306061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (EmulateInstruction::GetBestRegisterKindAndNumber (®_info, reg_kind, reg_num)) 307c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton return (uint64_t)reg_kind << 24 | reg_num; 308c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton return 0ull; 309c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 310c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 311c07d451bb046e47215bd73fda0235362cc6b1a47Greg Claytonvoid 312061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::SetRegisterValue (const RegisterInfo ®_info, const RegisterValue ®_value) 313c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 314c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton m_register_values[MakeRegisterKindValuePair (reg_info)] = reg_value; 315c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 316c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 317061b79dbf1fefaf157d414747e98a463a0f32edaGreg Claytonbool 318061b79dbf1fefaf157d414747e98a463a0f32edaGreg ClaytonUnwindAssemblyInstEmulation::GetRegisterValue (const RegisterInfo ®_info, RegisterValue ®_value) 319c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton{ 320c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton const uint64_t reg_id = MakeRegisterKindValuePair (reg_info); 321c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton RegisterValueMap::const_iterator pos = m_register_values.find(reg_id); 322c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton if (pos != m_register_values.end()) 323061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton { 324061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value = pos->second; 325061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return true; // We had a real value that comes from an opcode that wrote 326061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton // to it... 327061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton } 328061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton // We are making up a value that is recognizable... 329061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton reg_value.SetUInt(reg_id, reg_info.byte_size); 330061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton return false; 331c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton} 332c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 333888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 334888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonsize_t 335888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::ReadMemory (EmulateInstruction *instruction, 336888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 337888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 338888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton lldb::addr_t addr, 339888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *dst, 340888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton size_t dst_len) 341888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 34275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 34375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 3442d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 34575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 34675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 34775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::ReadMemory (addr = 0x%16.16llx, dst = %p, dst_len = %zu, context = ", 34875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton addr, 34975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton dst, 35075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton dst_len); 35175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 35275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData ()); 35375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 354b454db72811f6417878b42be816c5cbbea48703cJason Molenda memset (dst, 0, dst_len); 355888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return dst_len; 356888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 357888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 358888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonsize_t 359888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction, 360888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 361888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 362888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton lldb::addr_t addr, 363888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const void *dst, 364888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton size_t dst_len) 365888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 36675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (baton && dst && dst_len) 36775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->WriteMemory (instruction, context, addr, dst, dst_len); 36875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return 0; 36975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 37075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 37175906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonsize_t 37275906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::WriteMemory (EmulateInstruction *instruction, 37375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const EmulateInstruction::Context &context, 37475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton lldb::addr_t addr, 37575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const void *dst, 37675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton size_t dst_len) 37775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 378888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton DataExtractor data (dst, 379888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton dst_len, 380888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton instruction->GetArchitecture ().GetByteOrder(), 381888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton instruction->GetArchitecture ().GetAddressByteSize()); 382888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 38375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 38475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 3852d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 38675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 38775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 38875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 38975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString ("UnwindAssemblyInstEmulation::WriteMemory ("); 39075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton data.Dump(&strm, 0, eFormatBytes, 1, dst_len, UINT32_MAX, addr, 0, 0); 39175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString (", context = "); 39275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 39375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString (strm.GetData()); 39475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 3953063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 39675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool can_replace = true; 39775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool cant_replace = false; 39875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 3993063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton switch (context.type) 4003063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 401061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton default: 4023063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextInvalid: 4033063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextReadOpcode: 4043063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextImmediate: 4053063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustBaseRegister: 4063063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterPlusOffset: 4073063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustPC: 4083063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterStore: 4093063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRegisterLoad: 4103063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextRelativeBranchImmediate: 4113063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAbsoluteBranchRegister: 4123063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextSupervisorCall: 4133063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextTableBranchReadMemory: 4143063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextWriteRegisterRandomBits: 4153063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextWriteMemoryRandomBits: 4163063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextArithmetic: 4173063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdvancePC: 4183063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextReturnFromException: 4193063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextPopRegisterOffStack: 4203063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextAdjustStackPointer: 4213063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 4223063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 4233063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton case EmulateInstruction::eContextPushRegisterOnStack: 4243063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 42575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton uint32_t reg_num = LLDB_INVALID_REGNUM; 42675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton bool is_return_address_reg = false; 42775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t unwind_reg_kind = m_unwind_plan_ptr->GetRegisterKind(); 42875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (context.info_type == EmulateInstruction::eInfoTypeRegisterToRegisterPlusOffset) 42975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 43075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton reg_num = context.info.RegisterToRegisterPlusOffset.data_reg.kinds[unwind_reg_kind]; 43175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (context.info.RegisterToRegisterPlusOffset.data_reg.kinds[eRegisterKindGeneric] == LLDB_REGNUM_GENERIC_RA) 43275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton is_return_address_reg = true; 43375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 43475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton else 43575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 43675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton assert (!"unhandled case, add code to handle this!"); 43775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 43875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 43975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (reg_num != LLDB_INVALID_REGNUM) 44075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 44175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (m_pushed_regs.find (reg_num) == m_pushed_regs.end()) 4423063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 44375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_pushed_regs[reg_num] = addr; 44475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const int32_t offset = addr - m_initial_sp; 44568fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToAtCFAPlusOffset (reg_num, offset, cant_replace); 446a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 44775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (is_return_address_reg) 44875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 44975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // This push was pushing the return address register, 45075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // so this is also how we will unwind the PC... 45175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton RegisterInfo pc_reg_info; 45275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (instruction->GetRegisterInfo (eRegisterKindGeneric, LLDB_REGNUM_GENERIC_PC, pc_reg_info)) 45375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 45475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton uint32_t pc_reg_num = pc_reg_info.kinds[unwind_reg_kind]; 45575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (pc_reg_num != LLDB_INVALID_REGNUM) 456a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda { 45768fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToAtCFAPlusOffset (pc_reg_num, offset, can_replace); 458a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 459a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda } 46075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 46175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 4623063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 46375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 4643063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 4653063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton break; 4663063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 4673063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 4683063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 469888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return dst_len; 470888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 471888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 472888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonbool 473888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction, 474888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 475061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterInfo *reg_info, 476061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton RegisterValue ®_value) 477888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 47875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 479061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton if (baton && reg_info) 48075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->ReadRegister (instruction, reg_info, reg_value); 48175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 48275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 48375906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonbool 48475906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::ReadRegister (EmulateInstruction *instruction, 48575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterInfo *reg_info, 48675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton RegisterValue ®_value) 48775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 48875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton bool synthetic = GetRegisterValue (*reg_info, reg_value); 489888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 49075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 49175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 4922d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 49375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 49475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 49575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 496061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::ReadRegister (name = \"%s\") => synthetic_value = %i, value = ", reg_info->name, synthetic); 497997b1e82f098a8b748b490d1ae6d0bbe597a59d5Greg Clayton reg_value.Dump(&strm, reg_info, false, false, eFormatDefault); 49875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString(strm.GetData()); 499061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton } 500888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return true; 501888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 502888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 503888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Claytonbool 504888a7334344778d1a4edbd58b5852ae4d53ffed9Greg ClaytonUnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction, 505888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton void *baton, 506888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton const EmulateInstruction::Context &context, 507061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterInfo *reg_info, 508061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton const RegisterValue ®_value) 509888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton{ 51075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (baton && reg_info) 51175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return ((UnwindAssemblyInstEmulation *)baton)->WriteRegister (instruction, context, reg_info, reg_value); 51275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton return false; 51375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton} 51475906e4ec98af3717e415727a8d663a4e246bb4fGreg Claytonbool 51575906e4ec98af3717e415727a8d663a4e246bb4fGreg ClaytonUnwindAssemblyInstEmulation::WriteRegister (EmulateInstruction *instruction, 51675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const EmulateInstruction::Context &context, 51775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterInfo *reg_info, 51875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const RegisterValue ®_value) 51975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton{ 52075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_UNWIND)); 521061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton 5222d9b29b4bdc88d319761cac07f1692eef95c2a72Jason Molenda if (log && log->GetVerbose ()) 52375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 52475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 52575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton StreamString strm; 52675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.Printf ("UnwindAssemblyInstEmulation::WriteRegister (name = \"%s\", value = ", reg_info->name); 527997b1e82f098a8b748b490d1ae6d0bbe597a59d5Greg Clayton reg_value.Dump(&strm, reg_info, false, false, eFormatDefault); 52875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton strm.PutCString (", context = "); 52975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton context.Dump(strm, instruction); 53075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton log->PutCString(strm.GetData()); 53175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 532c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton 53375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const bool must_replace = true; 53475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton SetRegisterValue (*reg_info, reg_value); 535888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 536888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton switch (context.type) 537888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton { 538061b79dbf1fefaf157d414747e98a463a0f32edaGreg Clayton default: 539888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextInvalid: 540888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextReadOpcode: 541888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextImmediate: 542888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustBaseRegister: 543888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterPlusOffset: 544888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustPC: 545888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterStore: 546888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRegisterLoad: 547888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextRelativeBranchImmediate: 548888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAbsoluteBranchRegister: 549888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextSupervisorCall: 550888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextTableBranchReadMemory: 551888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextWriteRegisterRandomBits: 552888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextWriteMemoryRandomBits: 553c07d451bb046e47215bd73fda0235362cc6b1a47Greg Clayton case EmulateInstruction::eContextArithmetic: 554888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdvancePC: 555888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextReturnFromException: 556888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextPushRegisterOnStack: 55775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// { 55875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 55975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// if (reg_num != LLDB_INVALID_REGNUM) 56075906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// { 56175906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// const bool can_replace_only_if_unspecified = true; 56275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// 56375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// m_curr_row.SetRegisterLocationToUndefined (reg_num, 56475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// can_replace_only_if_unspecified, 56575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// can_replace_only_if_unspecified); 566a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda// m_curr_row_modified = true; 56775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// } 56875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton// } 569888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 5703063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton 571888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextPopRegisterOffStack: 5723063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 57375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 57475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (reg_num != LLDB_INVALID_REGNUM) 5753063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton { 57668fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetRegisterLocationToSame (reg_num, must_replace); 577a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 5783063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 5793063c95c54ac0303287c34f9f5af7ba7b6b8f0bcGreg Clayton } 580888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 581888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 58275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton case EmulateInstruction::eContextSetFramePointer: 58375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (!m_fp_is_cfa) 58475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 58575906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_fp_is_cfa = true; 58675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton m_cfa_reg_info = *reg_info; 58775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton const uint32_t cfa_reg_num = reg_info->kinds[m_unwind_plan_ptr->GetRegisterKind()]; 58875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton assert (cfa_reg_num != LLDB_INVALID_REGNUM); 58968fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFARegister(cfa_reg_num); 59068fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFAOffset(m_initial_sp - reg_value.GetAsUInt64()); 591a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 59275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 59375906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton break; 59475906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton 595888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton case EmulateInstruction::eContextAdjustStackPointer: 59675906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // If we have created a frame using the frame pointer, don't follow 59775906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton // subsequent adjustments to the stack pointer. 59875906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton if (!m_fp_is_cfa) 59975906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton { 60068fa4ec4361d1ea5a78a8a7eba2b8015e3dd68f7Jason Molenda m_curr_row->SetCFAOffset (m_initial_sp - reg_value.GetAsUInt64()); 601a092d901bec2beaed29603acad318d8d93da3f4aJason Molenda m_curr_row_modified = true; 60275906e4ec98af3717e415727a8d663a4e246bb4fGreg Clayton } 603888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton break; 604888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton } 605888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton return true; 606888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton} 607888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 608888a7334344778d1a4edbd58b5852ae4d53ffed9Greg Clayton 609