| //===-- CommandObjectDisassemble.cpp ----------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "CommandObjectDisassemble.h" |
| |
| // C Includes |
| // C++ Includes |
| // Other libraries and framework includes |
| // Project includes |
| #include "lldb/Core/AddressRange.h" |
| #include "lldb/Interpreter/Args.h" |
| #include "lldb/Interpreter/CommandCompletions.h" |
| #include "lldb/Interpreter/CommandInterpreter.h" |
| #include "lldb/Interpreter/CommandReturnObject.h" |
| #include "lldb/Core/Disassembler.h" |
| #include "lldb/Interpreter/Options.h" |
| #include "lldb/Core/SourceManager.h" |
| #include "lldb/Target/StackFrame.h" |
| #include "lldb/Symbol/Symbol.h" |
| #include "lldb/Target/Process.h" |
| #include "lldb/Target/Target.h" |
| |
| #define DEFAULT_DISASM_BYTE_SIZE 32 |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| |
| CommandObjectDisassemble::CommandOptions::CommandOptions () : |
| Options(), |
| m_func_name(), |
| m_start_addr(), |
| m_end_addr () |
| { |
| ResetOptionValues(); |
| } |
| |
| CommandObjectDisassemble::CommandOptions::~CommandOptions () |
| { |
| } |
| |
| Error |
| CommandObjectDisassemble::CommandOptions::SetOptionValue (int option_idx, const char *option_arg) |
| { |
| Error error; |
| |
| char short_option = (char) m_getopt_table[option_idx].val; |
| |
| switch (short_option) |
| { |
| case 'm': |
| show_mixed = true; |
| break; |
| |
| case 'c': |
| num_lines_context = Args::StringToUInt32(option_arg, 0, 0); |
| break; |
| |
| case 'b': |
| show_bytes = true; |
| break; |
| |
| case 's': |
| m_start_addr = Args::StringToUInt64(optarg, LLDB_INVALID_ADDRESS, 0); |
| if (m_start_addr == LLDB_INVALID_ADDRESS) |
| m_start_addr = Args::StringToUInt64(optarg, LLDB_INVALID_ADDRESS, 16); |
| |
| if (m_start_addr == LLDB_INVALID_ADDRESS) |
| error.SetErrorStringWithFormat ("Invalid start address string '%s'.\n", optarg); |
| break; |
| case 'e': |
| m_end_addr = Args::StringToUInt64(optarg, LLDB_INVALID_ADDRESS, 0); |
| if (m_end_addr == LLDB_INVALID_ADDRESS) |
| m_end_addr = Args::StringToUInt64(optarg, LLDB_INVALID_ADDRESS, 16); |
| |
| if (m_end_addr == LLDB_INVALID_ADDRESS) |
| error.SetErrorStringWithFormat ("Invalid end address string '%s'.\n", optarg); |
| break; |
| |
| case 'n': |
| m_func_name = option_arg; |
| break; |
| |
| case 'r': |
| raw = true; |
| break; |
| |
| default: |
| error.SetErrorStringWithFormat("Unrecognized short option '%c'.\n", short_option); |
| break; |
| } |
| |
| return error; |
| } |
| |
| void |
| CommandObjectDisassemble::CommandOptions::ResetOptionValues () |
| { |
| Options::ResetOptionValues(); |
| show_mixed = false; |
| show_bytes = false; |
| num_lines_context = 0; |
| m_func_name.clear(); |
| m_start_addr = LLDB_INVALID_ADDRESS; |
| m_end_addr = LLDB_INVALID_ADDRESS; |
| raw = false; |
| } |
| |
| const lldb::OptionDefinition* |
| CommandObjectDisassemble::CommandOptions::GetDefinitions () |
| { |
| return g_option_table; |
| } |
| |
| lldb::OptionDefinition |
| CommandObjectDisassemble::CommandOptions::g_option_table[] = |
| { |
| { LLDB_OPT_SET_ALL, false, "bytes", 'b', no_argument, NULL, 0, NULL, "Show opcode bytes when disassembling."}, |
| { LLDB_OPT_SET_ALL, false, "context", 'c', required_argument, NULL, 0, "<num-lines>", "Number of context lines of source to show."}, |
| { LLDB_OPT_SET_ALL, false, "mixed", 'm', no_argument, NULL, 0, NULL, "Enable mixed source and assembly display."}, |
| { LLDB_OPT_SET_ALL, false, "raw", 'r', no_argument, NULL, 0, NULL, "Print raw disassembly with no symbol information."}, |
| |
| { LLDB_OPT_SET_1, true, "start-address", 's', required_argument, NULL, 0, "<start-address>", "Address to start disassembling."}, |
| { LLDB_OPT_SET_1, false, "end-address", 'e', required_argument, NULL, 0, "<end-address>", "Address to start disassembling."}, |
| |
| { LLDB_OPT_SET_2, true, "name", 'n', required_argument, NULL, CommandCompletions::eSymbolCompletion, "<function-name>", "Disassemble entire contents of the given function name."}, |
| |
| { LLDB_OPT_SET_3, false, "current-frame", 'f', no_argument, NULL, 0, "<current-frame>", "Disassemble entire contents of the current frame's function."}, |
| |
| { 0, false, NULL, 0, 0, NULL, 0, NULL, NULL } |
| }; |
| |
| |
| |
| //------------------------------------------------------------------------- |
| // CommandObjectDisassemble |
| //------------------------------------------------------------------------- |
| |
| CommandObjectDisassemble::CommandObjectDisassemble () : |
| CommandObject ("disassemble", |
| "Disassemble bytes in the current function or anywhere in the inferior program.", |
| "disassemble [<cmd-options>]") |
| { |
| } |
| |
| CommandObjectDisassemble::~CommandObjectDisassemble() |
| { |
| } |
| |
| void |
| CommandObjectDisassemble::Disassemble |
| ( |
| CommandContext *context, |
| CommandInterpreter *interpreter, |
| CommandReturnObject &result, |
| Disassembler *disassembler, |
| const SymbolContextList &sc_list |
| ) |
| { |
| const size_t count = sc_list.GetSize(); |
| SymbolContext sc; |
| AddressRange range; |
| for (size_t i=0; i<count; ++i) |
| { |
| if (sc_list.GetContextAtIndex(i, sc) == false) |
| break; |
| if (sc.GetAddressRange(eSymbolContextFunction | eSymbolContextSymbol, range)) |
| { |
| lldb::addr_t addr = range.GetBaseAddress().GetLoadAddress(context->GetExecutionContext().process); |
| if (addr != LLDB_INVALID_ADDRESS) |
| { |
| lldb::addr_t end_addr = addr + range.GetByteSize(); |
| Disassemble (context, interpreter, result, disassembler, addr, end_addr); |
| } |
| } |
| } |
| } |
| |
| void |
| CommandObjectDisassemble::Disassemble |
| ( |
| CommandContext *context, |
| CommandInterpreter *interpreter, |
| CommandReturnObject &result, |
| Disassembler *disassembler, |
| lldb::addr_t addr, |
| lldb::addr_t end_addr |
| ) |
| { |
| if (addr == LLDB_INVALID_ADDRESS) |
| return; |
| |
| if (end_addr == LLDB_INVALID_ADDRESS || addr >= end_addr) |
| end_addr = addr + DEFAULT_DISASM_BYTE_SIZE; |
| |
| ExecutionContext exe_ctx (context->GetExecutionContext()); |
| DataExtractor data; |
| size_t bytes_disassembled = disassembler->ParseInstructions (&exe_ctx, eAddressTypeLoad, addr, end_addr - addr, data); |
| if (bytes_disassembled == 0) |
| { |
| // Nothing got disassembled... |
| } |
| else |
| { |
| // We got some things disassembled... |
| size_t num_instructions = disassembler->GetInstructionList().GetSize(); |
| uint32_t offset = 0; |
| Stream &output_stream = result.GetOutputStream(); |
| SymbolContext sc; |
| SymbolContext prev_sc; |
| AddressRange sc_range; |
| if (m_options.show_mixed) |
| output_stream.IndentMore (); |
| |
| for (size_t i=0; i<num_instructions; ++i) |
| { |
| Disassembler::Instruction *inst = disassembler->GetInstructionList().GetInstructionAtIndex (i); |
| if (inst) |
| { |
| lldb::addr_t curr_addr = addr + offset; |
| if (m_options.show_mixed) |
| { |
| Process *process = context->GetExecutionContext().process; |
| if (!sc_range.ContainsLoadAddress (curr_addr, process)) |
| { |
| prev_sc = sc; |
| Address curr_so_addr; |
| if (process && process->ResolveLoadAddress (curr_addr, curr_so_addr)) |
| { |
| if (curr_so_addr.GetSection()) |
| { |
| Module *module = curr_so_addr.GetSection()->GetModule(); |
| uint32_t resolved_mask = module->ResolveSymbolContextForAddress(curr_so_addr, eSymbolContextEverything, sc); |
| if (resolved_mask) |
| { |
| sc.GetAddressRange (eSymbolContextEverything, sc_range); |
| if (sc != prev_sc) |
| { |
| if (offset != 0) |
| output_stream.EOL(); |
| |
| sc.DumpStopContext(&output_stream, process, curr_so_addr); |
| output_stream.EOL(); |
| if (sc.comp_unit && sc.line_entry.IsValid()) |
| { |
| interpreter->GetSourceManager().DisplaySourceLinesWithLineNumbers ( |
| sc.line_entry.file, |
| sc.line_entry.line, |
| m_options.num_lines_context, |
| m_options.num_lines_context, |
| m_options.num_lines_context ? "->" : "", |
| &output_stream); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| if (m_options.show_mixed) |
| output_stream.IndentMore (); |
| output_stream.Indent(); |
| size_t inst_byte_size = inst->GetByteSize(); |
| inst->Dump(&output_stream, curr_addr, m_options.show_bytes ? &data : NULL, offset, exe_ctx, m_options.raw); |
| output_stream.EOL(); |
| offset += inst_byte_size; |
| if (m_options.show_mixed) |
| output_stream.IndentLess (); |
| } |
| else |
| { |
| break; |
| } |
| } |
| if (m_options.show_mixed) |
| output_stream.IndentLess (); |
| |
| } |
| } |
| |
| bool |
| CommandObjectDisassemble::Execute |
| ( |
| Args& command, |
| CommandContext *context, |
| CommandInterpreter *interpreter, |
| CommandReturnObject &result |
| ) |
| { |
| Target *target = context->GetTarget(); |
| if (target == NULL) |
| { |
| result.AppendError ("invalid target, set executable file using 'file' command"); |
| result.SetStatus (eReturnStatusFailed); |
| return false; |
| } |
| |
| ArchSpec arch(target->GetArchitecture()); |
| if (!arch.IsValid()) |
| { |
| result.AppendError ("target needs valid architecure in order to be able to disassemble"); |
| result.SetStatus (eReturnStatusFailed); |
| return false; |
| } |
| |
| Disassembler *disassembler = Disassembler::FindPlugin(arch); |
| |
| if (disassembler == NULL) |
| { |
| result.AppendErrorWithFormat ("Unable to find Disassembler plug-in for %s architecture.\n", arch.AsCString()); |
| result.SetStatus (eReturnStatusFailed); |
| return false; |
| } |
| |
| result.SetStatus (eReturnStatusSuccessFinishResult); |
| |
| lldb::addr_t addr = LLDB_INVALID_ADDRESS; |
| lldb::addr_t end_addr = LLDB_INVALID_ADDRESS; |
| ConstString name; |
| const size_t argc = command.GetArgumentCount(); |
| if (argc != 0) |
| { |
| result.AppendErrorWithFormat ("\"disassemble\" doesn't take any arguments.\n"); |
| result.SetStatus (eReturnStatusFailed); |
| return false; |
| } |
| |
| if (m_options.m_start_addr != LLDB_INVALID_ADDRESS) |
| { |
| addr = m_options.m_start_addr; |
| if (m_options.m_end_addr != LLDB_INVALID_ADDRESS) |
| { |
| end_addr = m_options.m_end_addr; |
| if (end_addr < addr) |
| { |
| result.AppendErrorWithFormat ("End address before start address.\n"); |
| result.SetStatus (eReturnStatusFailed); |
| return false; |
| } |
| } |
| else |
| end_addr = addr + DEFAULT_DISASM_BYTE_SIZE; |
| } |
| else if (!m_options.m_func_name.empty()) |
| { |
| ConstString tmpname(m_options.m_func_name.c_str()); |
| name = tmpname; |
| } |
| else |
| { |
| ExecutionContext exe_ctx(context->GetExecutionContext()); |
| if (exe_ctx.frame) |
| { |
| SymbolContext sc(exe_ctx.frame->GetSymbolContext(eSymbolContextFunction | eSymbolContextSymbol)); |
| if (sc.function) |
| { |
| addr = sc.function->GetAddressRange().GetBaseAddress().GetLoadAddress(exe_ctx.process); |
| if (addr != LLDB_INVALID_ADDRESS) |
| end_addr = addr + sc.function->GetAddressRange().GetByteSize(); |
| } |
| else if (sc.symbol && sc.symbol->GetAddressRangePtr()) |
| { |
| addr = sc.symbol->GetAddressRangePtr()->GetBaseAddress().GetLoadAddress(exe_ctx.process); |
| if (addr != LLDB_INVALID_ADDRESS) |
| { |
| end_addr = addr + sc.symbol->GetAddressRangePtr()->GetByteSize(); |
| if (addr == end_addr) |
| end_addr += DEFAULT_DISASM_BYTE_SIZE; |
| } |
| } |
| else |
| { |
| addr = exe_ctx.frame->GetPC().GetLoadAddress(exe_ctx.process); |
| if (addr != LLDB_INVALID_ADDRESS) |
| end_addr = addr + DEFAULT_DISASM_BYTE_SIZE; |
| } |
| } |
| else |
| { |
| result.AppendError ("invalid frame"); |
| result.SetStatus (eReturnStatusFailed); |
| return false; |
| } |
| } |
| |
| if (!name.IsEmpty()) |
| { |
| SymbolContextList sc_list; |
| |
| if (target->GetImages().FindFunctions(name, sc_list)) |
| { |
| Disassemble (context, interpreter, result, disassembler, sc_list); |
| } |
| else if (target->GetImages().FindSymbolsWithNameAndType(name, eSymbolTypeCode, sc_list)) |
| { |
| Disassemble (context, interpreter, result, disassembler, sc_list); |
| } |
| else |
| { |
| result.AppendErrorWithFormat ("Unable to find symbol with name '%s'.\n", name.GetCString()); |
| result.SetStatus (eReturnStatusFailed); |
| return false; |
| } |
| } |
| else |
| { |
| Disassemble (context, interpreter, result, disassembler, addr, end_addr); |
| } |
| |
| return result.Succeeded(); |
| } |