//===-- 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, "", "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, "", "Address to start disassembling."}, { LLDB_OPT_SET_1, false, "end-address", 'e', required_argument, NULL, 0, "", "Address to start disassembling."}, { LLDB_OPT_SET_2, true, "name", 'n', required_argument, NULL, CommandCompletions::eSymbolCompletion, "", "Disassemble entire contents of the given function name."}, { LLDB_OPT_SET_3, false, "current-frame", 'f', no_argument, NULL, 0, "", "Disassemble entire contents of the current frame's function."}, { 0, false, NULL, 0, 0, NULL, 0, NULL, NULL } }; //------------------------------------------------------------------------- // CommandObjectDisassemble //------------------------------------------------------------------------- CommandObjectDisassemble::CommandObjectDisassemble (CommandInterpreter &interpreter) : CommandObject (interpreter, "disassemble", "Disassemble bytes in the current function, or elsewhere in the executable program as specified by the user.", "disassemble []") { } CommandObjectDisassemble::~CommandObjectDisassemble() { } bool CommandObjectDisassemble::Execute ( Args& command, CommandReturnObject &result ) { Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get(); 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); if (command.GetArgumentCount() != 0) { result.AppendErrorWithFormat ("\"disassemble\" arguments are specified as options.\n"); GetOptions()->GenerateOptionUsage (m_interpreter, result.GetErrorStream(), this); result.SetStatus (eReturnStatusFailed); return false; } ExecutionContext exe_ctx(m_interpreter.GetDebugger().GetExecutionContext()); if (m_options.show_mixed && m_options.num_lines_context == 0) m_options.num_lines_context = 1; if (!m_options.m_func_name.empty()) { ConstString name(m_options.m_func_name.c_str()); if (Disassembler::Disassemble (m_interpreter.GetDebugger(), arch, exe_ctx, name, NULL, // Module * m_options.show_mixed ? m_options.num_lines_context : 0, m_options.show_bytes, result.GetOutputStream())) { result.SetStatus (eReturnStatusSuccessFinishResult); } else { result.AppendErrorWithFormat ("Unable to find symbol with name '%s'.\n", name.GetCString()); result.SetStatus (eReturnStatusFailed); } } else { AddressRange range; if (m_options.m_start_addr != LLDB_INVALID_ADDRESS) { range.GetBaseAddress().SetOffset (m_options.m_start_addr); if (m_options.m_end_addr != LLDB_INVALID_ADDRESS) { if (m_options.m_end_addr < m_options.m_start_addr) { result.AppendErrorWithFormat ("End address before start address.\n"); result.SetStatus (eReturnStatusFailed); return false; } range.SetByteSize (m_options.m_end_addr - m_options.m_start_addr); } else range.SetByteSize (DEFAULT_DISASM_BYTE_SIZE); } else { if (exe_ctx.frame) { SymbolContext sc(exe_ctx.frame->GetSymbolContext(eSymbolContextFunction | eSymbolContextSymbol)); if (sc.function) range = sc.function->GetAddressRange(); else if (sc.symbol && sc.symbol->GetAddressRangePtr()) range = *sc.symbol->GetAddressRangePtr(); else range.GetBaseAddress() = exe_ctx.frame->GetFrameCodeAddress(); } else { result.AppendError ("invalid frame"); result.SetStatus (eReturnStatusFailed); return false; } } if (range.GetByteSize() == 0) range.SetByteSize(DEFAULT_DISASM_BYTE_SIZE); if (Disassembler::Disassemble (m_interpreter.GetDebugger(), arch, exe_ctx, range, m_options.show_mixed ? m_options.num_lines_context : 0, m_options.show_bytes, result.GetOutputStream())) { result.SetStatus (eReturnStatusSuccessFinishResult); } else { result.AppendErrorWithFormat ("Failed to disassemble memory at 0x%8.8llx.\n", m_options.m_start_addr); result.SetStatus (eReturnStatusFailed); } } return result.Succeeded(); }