Error ClangExpressionParser::DisassembleFunction (Stream &stream, ExecutionContext &exe_ctx, RecordingMemoryManager *jit_memory_manager) { lldb::LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_EXPRESSIONS)); const char *name = m_expr.FunctionName(); Error ret; ret.Clear(); lldb::addr_t func_local_addr = LLDB_INVALID_ADDRESS; lldb::addr_t func_remote_addr = LLDB_INVALID_ADDRESS; std::vector<JittedFunction>::iterator pos, end = m_jitted_functions.end(); for (pos = m_jitted_functions.begin(); pos < end; pos++) { if (strstr(pos->m_name.c_str(), name)) { func_local_addr = pos->m_local_addr; func_remote_addr = pos->m_remote_addr; } } if (func_local_addr == LLDB_INVALID_ADDRESS) { ret.SetErrorToGenericError(); ret.SetErrorStringWithFormat("Couldn't find function %s for disassembly", name); return ret; } if(log) log->Printf("Found function, has local address 0x%llx and remote address 0x%llx", (uint64_t)func_local_addr, (uint64_t)func_remote_addr); std::pair <lldb::addr_t, lldb::addr_t> func_range; func_range = jit_memory_manager->GetRemoteRangeForLocal(func_local_addr); if (func_range.first == 0 && func_range.second == 0) { ret.SetErrorToGenericError(); ret.SetErrorStringWithFormat("Couldn't find code range for function %s", name); return ret; } if(log) log->Printf("Function's code range is [0x%llx-0x%llx]", func_range.first, func_range.second); if (!exe_ctx.target) { ret.SetErrorToGenericError(); ret.SetErrorString("Couldn't find the target"); } lldb::DataBufferSP buffer_sp(new DataBufferHeap(func_range.second - func_remote_addr, 0)); Error err; exe_ctx.process->ReadMemory(func_remote_addr, buffer_sp->GetBytes(), buffer_sp->GetByteSize(), err); if (!err.Success()) { ret.SetErrorToGenericError(); ret.SetErrorStringWithFormat("Couldn't read from process: %s", err.AsCString("unknown error")); return ret; } ArchSpec arch(exe_ctx.target->GetArchitecture()); Disassembler *disassembler = Disassembler::FindPlugin(arch); if (disassembler == NULL) { ret.SetErrorToGenericError(); ret.SetErrorStringWithFormat("Unable to find disassembler plug-in for %s architecture.", arch.GetArchitectureName()); return ret; } if (!exe_ctx.process) { ret.SetErrorToGenericError(); ret.SetErrorString("Couldn't find the process"); return ret; } DataExtractor extractor(buffer_sp, exe_ctx.process->GetByteOrder(), exe_ctx.target->GetArchitecture().GetAddressByteSize()); if (log) { log->Printf("Function data has contents:"); extractor.PutToLog (log.get(), 0, extractor.GetByteSize(), func_remote_addr, 16, DataExtractor::TypeUInt8); } disassembler->DecodeInstructions (Address (NULL, func_remote_addr), extractor, 0, UINT32_MAX); InstructionList &instruction_list = disassembler->GetInstructionList(); uint32_t bytes_offset = 0; for (uint32_t instruction_index = 0, num_instructions = instruction_list.GetSize(); instruction_index < num_instructions; ++instruction_index) { Instruction *instruction = instruction_list.GetInstructionAtIndex(instruction_index).get(); instruction->Dump (&stream, true, &extractor, bytes_offset, &exe_ctx, true); stream.PutChar('\n'); bytes_offset += instruction->GetByteSize(); } return ret; }
void ThreadPlanAssemblyTracer::Log() { Stream *stream = GetLogStream(); if (!stream) return; RegisterContext *reg_ctx = m_thread.GetRegisterContext().get(); lldb::addr_t pc = reg_ctx->GetPC(); ProcessSP process_sp(m_thread.GetProcess()); Address pc_addr; bool addr_valid = false; uint8_t buffer[16] = {0}; // Must be big enough for any single instruction addr_valid = process_sp->GetTarget().GetSectionLoadList().ResolveLoadAddress( pc, pc_addr); pc_addr.Dump(stream, &m_thread, Address::DumpStyleResolvedDescription, Address::DumpStyleModuleWithFileAddress); stream->PutCString(" "); Disassembler *disassembler = GetDisassembler(); if (disassembler) { Status err; process_sp->ReadMemory(pc, buffer, sizeof(buffer), err); if (err.Success()) { DataExtractor extractor(buffer, sizeof(buffer), process_sp->GetByteOrder(), process_sp->GetAddressByteSize()); bool data_from_file = false; if (addr_valid) disassembler->DecodeInstructions(pc_addr, extractor, 0, 1, false, data_from_file); else disassembler->DecodeInstructions(Address(pc), extractor, 0, 1, false, data_from_file); InstructionList &instruction_list = disassembler->GetInstructionList(); const uint32_t max_opcode_byte_size = instruction_list.GetMaxOpcocdeByteSize(); if (instruction_list.GetSize()) { const bool show_bytes = true; const bool show_address = true; Instruction *instruction = instruction_list.GetInstructionAtIndex(0).get(); const FormatEntity::Entry *disassemble_format = m_thread.GetProcess() ->GetTarget() .GetDebugger() .GetDisassemblyFormat(); instruction->Dump(stream, max_opcode_byte_size, show_address, show_bytes, nullptr, nullptr, nullptr, disassemble_format, 0); } } } const ABI *abi = process_sp->GetABI().get(); TypeFromUser intptr_type = GetIntPointerType(); if (abi && intptr_type.IsValid()) { ValueList value_list; const int num_args = 1; for (int arg_index = 0; arg_index < num_args; ++arg_index) { Value value; value.SetValueType(Value::eValueTypeScalar); // value.SetContext (Value::eContextTypeClangType, // intptr_type.GetOpaqueQualType()); value.SetCompilerType(intptr_type); value_list.PushValue(value); } if (abi->GetArgumentValues(m_thread, value_list)) { for (int arg_index = 0; arg_index < num_args; ++arg_index) { stream->Printf( "\n\targ[%d]=%llx", arg_index, value_list.GetValueAtIndex(arg_index)->GetScalar().ULongLong()); if (arg_index + 1 < num_args) stream->PutCString(", "); } } } RegisterValue reg_value; for (uint32_t reg_num = 0, num_registers = reg_ctx->GetRegisterCount(); reg_num < num_registers; ++reg_num) { const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoAtIndex(reg_num); if (reg_ctx->ReadRegister(reg_info, reg_value)) { assert(reg_num < m_register_values.size()); if (m_register_values[reg_num].GetType() == RegisterValue::eTypeInvalid || reg_value != m_register_values[reg_num]) { if (reg_value.GetType() != RegisterValue::eTypeInvalid) { stream->PutCString("\n\t"); reg_value.Dump(stream, reg_info, true, false, eFormatDefault); } } m_register_values[reg_num] = reg_value; } } stream->EOL(); stream->Flush(); }
bool Disassembler::Disassemble ( Debugger &debugger, const ArchSpec &arch, const ExecutionContext &exe_ctx, const AddressRange &disasm_range, uint32_t num_mixed_context_lines, bool show_bytes, Stream &strm ) { if (disasm_range.GetByteSize()) { Disassembler *disassembler = Disassembler::FindPlugin(arch); if (disassembler) { AddressRange range(disasm_range); Process *process = exe_ctx.process; // If we weren't passed in a section offset address range, // try and resolve it to something if (range.GetBaseAddress().IsSectionOffset() == false) { if (process && process->IsAlive()) { process->ResolveLoadAddress (range.GetBaseAddress().GetOffset(), range.GetBaseAddress()); } else if (exe_ctx.target) { exe_ctx.target->GetImages().ResolveFileAddress (range.GetBaseAddress().GetOffset(), range.GetBaseAddress()); } } DataExtractor data; size_t bytes_disassembled = disassembler->ParseInstructions (&exe_ctx, range, data); if (bytes_disassembled == 0) { return false; } else { // We got some things disassembled... size_t num_instructions = disassembler->GetInstructionList().GetSize(); uint32_t offset = 0; SymbolContext sc; SymbolContext prev_sc; AddressRange sc_range; if (num_mixed_context_lines) strm.IndentMore (); Address addr(range.GetBaseAddress()); // We extract the section to make sure we don't transition out // of the current section when disassembling const Section *addr_section = addr.GetSection(); Module *range_module = range.GetBaseAddress().GetModule(); for (size_t i=0; i<num_instructions; ++i) { Disassembler::Instruction *inst = disassembler->GetInstructionList().GetInstructionAtIndex (i); if (inst) { addr_t file_addr = addr.GetFileAddress(); if (addr_section == NULL || addr_section->ContainsFileAddress (file_addr) == false) { if (range_module) range_module->ResolveFileAddress (file_addr, addr); else if (exe_ctx.target) exe_ctx.target->GetImages().ResolveFileAddress (file_addr, addr); addr_section = addr.GetSection(); } prev_sc = sc; if (addr_section) { Module *module = addr_section->GetModule(); uint32_t resolved_mask = module->ResolveSymbolContextForAddress(addr, eSymbolContextEverything, sc); if (resolved_mask) { if (prev_sc.function != sc.function || prev_sc.symbol != sc.symbol) { if (prev_sc.function || prev_sc.symbol) strm.EOL(); strm << sc.module_sp->GetFileSpec().GetFilename(); if (sc.function) strm << '`' << sc.function->GetMangled().GetName(); else if (sc.symbol) strm << '`' << sc.symbol->GetMangled().GetName(); strm << ":\n"; } if (num_mixed_context_lines && !sc_range.ContainsFileAddress (addr)) { sc.GetAddressRange (eSymbolContextEverything, sc_range); if (sc != prev_sc) { if (offset != 0) strm.EOL(); sc.DumpStopContext(&strm, process, addr); if (sc.comp_unit && sc.line_entry.IsValid()) { debugger.GetSourceManager().DisplaySourceLinesWithLineNumbers (sc.line_entry.file, sc.line_entry.line, num_mixed_context_lines, num_mixed_context_lines, num_mixed_context_lines ? "->" : "", &strm); } } } } else { sc.Clear(); } } if (num_mixed_context_lines) strm.IndentMore (); strm.Indent(); size_t inst_byte_size = inst->GetByteSize(); inst->Dump(&strm, &addr, show_bytes ? &data : NULL, offset, exe_ctx, show_bytes); strm.EOL(); offset += inst_byte_size; addr.SetOffset (addr.GetOffset() + inst_byte_size); if (num_mixed_context_lines) strm.IndentLess (); } else { break; } } if (num_mixed_context_lines) strm.IndentLess (); } } return true; } return false; }