text: //===-- ProcessMinidump.cpp -----------------------------------------------===//
  //
  // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  // See https://llvm.org/LICENSE.txt for license information.
  // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  //
  //===----------------------------------------------------------------------===//
  
  #include "ProcessMinidump.h"
  
  #include "ThreadMinidump.h"
  
  #include "lldb/Core/DumpDataExtractor.h"
  #include "lldb/Core/Module.h"
  #include "lldb/Core/ModuleSpec.h"
  #include "lldb/Core/PluginManager.h"
  #include "lldb/Core/Section.h"
  #include "lldb/Interpreter/CommandInterpreter.h"
  #include "lldb/Interpreter/CommandObject.h"
  #include "lldb/Interpreter/CommandObjectMultiword.h"
  #include "lldb/Interpreter/CommandReturnObject.h"
  #include "lldb/Interpreter/OptionArgParser.h"
  #include "lldb/Interpreter/OptionGroupBoolean.h"
  #include "lldb/Target/JITLoaderList.h"
  #include "lldb/Target/MemoryRegionInfo.h"
  #include "lldb/Target/SectionLoadList.h"
  #include "lldb/Target/Target.h"
  #include "lldb/Target/UnixSignals.h"
  #include "lldb/Utility/LLDBAssert.h"
  #include "lldb/Utility/Log.h"
  #include "lldb/Utility/State.h"
  #include "llvm/BinaryFormat/Magic.h"
  #include "llvm/Support/MemoryBuffer.h"
  #include "llvm/Support/Threading.h"
  
  #include "Plugins/Process/Utility/StopInfoMachException.h"
  
  #include <memory>
  
  using namespace lldb;
  using namespace lldb_private;
  using namespace minidump;
  
  namespace {
  
  /// A minimal ObjectFile implementation providing a dummy object file for the
  /// cases when the real module binary is not available. This allows the module
  /// to show up in "image list" and symbols to be added to it.
  class PlaceholderObjectFile : public ObjectFile {
  public:
    PlaceholderObjectFile(const lldb::ModuleSP &module_sp,
                          const ModuleSpec &module_spec, lldb::addr_t base,
                          lldb::addr_t size)
        : ObjectFile(module_sp, &module_spec.GetFileSpec(), /*file_offset*/ 0,
                     /*length*/ 0, /*data_sp*/ nullptr, /*data_offset*/ 0),
          m_arch(module_spec.GetArchitecture()), m_uuid(module_spec.GetUUID()),
          m_base(base), m_size(size) {
      m_symtab_up = std::make_unique<Symtab>(this);
    }
  
    static ConstString GetStaticPluginName() {
      return ConstString("placeholder");
    }
    ConstString GetPluginName() override { return GetStaticPluginName(); }
    uint32_t GetPluginVersion() override { return 1; }
    bool ParseHeader() override { return true; }
    Type CalculateType() override { return eTypeUnknown; }
    Strata CalculateStrata() override { return eStrataUnknown; }
    uint32_t GetDependentModules(FileSpecList &file_list) override { return 0; }
    bool IsExecutable() const override { return false; }
    ArchSpec GetArchitecture() override { return m_arch; }
    UUID GetUUID() override { return m_uuid; }
    Symtab *GetSymtab() override { return m_symtab_up.get(); }
    bool IsStripped() override { return true; }
    ByteOrder GetByteOrder() const override { return m_arch.GetByteOrder(); }
  
    uint32_t GetAddressByteSize() const override {
      return m_arch.GetAddressByteSize();
    }
  
    Address GetBaseAddress() override {
      return Address(m_sections_up->GetSectionAtIndex(0), 0);
    }
  
    void CreateSections(SectionList &unified_section_list) override {
      m_sections_up = std::make_unique<SectionList>();
      auto section_sp = std::make_shared<Section>(
          GetModule(), this, /*sect_id*/ 0, ConstString(".module_image"),
          eSectionTypeOther, m_base, m_size, /*file_offset*/ 0, /*file_size*/ 0,
          /*log2align*/ 0, /*flags*/ 0);
      section_sp->SetPermissions(ePermissionsReadable | ePermissionsExecutable);
      m_sections_up->AddSection(section_sp);
      unified_section_list.AddSection(std::move(section_sp));
    }
  
    bool SetLoadAddress(Target &target, addr_t value,
                        bool value_is_offset) override {
      assert(!value_is_offset);
      assert(value == m_base);
  
      // Create sections if they haven't been created already.
      GetModule()->GetSectionList();
      assert(m_sections_up->GetNumSections(0) == 1);
  
      target.GetSectionLoadList().SetSectionLoadAddress(
          m_sections_up->GetSectionAtIndex(0), m_base);
      return true;
    }
  
    void Dump(Stream *s) override {
      s->Format("Placeholder object file for {0} loaded at [{1:x}-{2:x})\n",
                GetFileSpec(), m_base, m_base + m_size);
    }
  
    lldb::addr_t GetBaseImageAddress() const { return m_base; }
  private:
    ArchSpec m_arch;
    UUID m_uuid;
    lldb::addr_t m_base;
    lldb::addr_t m_size;
  };
  } // namespace
  
  ConstString ProcessMinidump::GetPluginNameStatic() {
    static ConstString g_name("minidump");
    return g_name;
  }
  
  const char *ProcessMinidump::GetPluginDescriptionStatic() {
    return "Minidump plug-in.";
  }
  
  lldb::ProcessSP ProcessMinidump::CreateInstance(lldb::TargetSP target_sp,
                                                  lldb::ListenerSP listener_sp,
                                                  const FileSpec *crash_file) {
    if (!crash_file)
      return nullptr;
  
    lldb::ProcessSP process_sp;
    // Read enough data for the Minidump header
    constexpr size_t header_size = sizeof(Header);
    auto DataPtr = FileSystem::Instance().CreateDataBuffer(crash_file->GetPath(),
                                                           header_size, 0);
    if (!DataPtr)
      return nullptr;
  
    lldbassert(DataPtr->GetByteSize() == header_size);
    if (identify_magic(toStringRef(DataPtr->GetData())) != llvm::file_magic::minidump)
      return nullptr;
  
    auto AllData =
        FileSystem::Instance().CreateDataBuffer(crash_file->GetPath(), -1, 0);
    if (!AllData)
      return nullptr;
  
    return std::make_shared<ProcessMinidump>(target_sp, listener_sp, *crash_file,
                                             std::move(AllData));
  }
  
  bool ProcessMinidump::CanDebug(lldb::TargetSP target_sp,
                                 bool plugin_specified_by_name) {
    return true;
  }
  
  ProcessMinidump::ProcessMinidump(lldb::TargetSP target_sp,
                                   lldb::ListenerSP listener_sp,
                                   const FileSpec &core_file,
                                   DataBufferSP core_data)
      : Process(target_sp, listener_sp), m_core_file(core_file),
        m_core_data(std::move(core_data)), m_is_wow64(false) {}
  
  ProcessMinidump::~ProcessMinidump() {
    Clear();
    // We need to call finalize on the process before destroying ourselves to
    // make sure all of the broadcaster cleanup goes as planned. If we destruct
    // this class, then Process::~Process() might have problems trying to fully
    // destroy the broadcaster.
    Finalize();
  }
  
  void ProcessMinidump::Initialize() {
    static llvm::once_flag g_once_flag;
  
    llvm::call_once(g_once_flag, []() {
      PluginManager::RegisterPlugin(GetPluginNameStatic(),
                                    GetPluginDescriptionStatic(),
                                    ProcessMinidump::CreateInstance);
    });
  }
  
  void ProcessMinidump::Terminate() {
    PluginManager::UnregisterPlugin(ProcessMinidump::CreateInstance);
  }
  
  Status ProcessMinidump::DoLoadCore() {
    auto expected_parser = MinidumpParser::Create(m_core_data);
    if (!expected_parser)
      return Status(expected_parser.takeError());
    m_minidump_parser = std::move(*expected_parser);
  
    Status error;
  
    // Do we support the minidump's architecture?
    ArchSpec arch = GetArchitecture();
    switch (arch.GetMachine()) {
    case llvm::Triple::x86:
    case llvm::Triple::x86_64:
    case llvm::Triple::arm:
    case llvm::Triple::aarch64:
      // Any supported architectures must be listed here and also supported in
      // ThreadMinidump::CreateRegisterContextForFrame().
      break;
    default:
      error.SetErrorStringWithFormat("unsupported minidump architecture: %s",
                                     arch.GetArchitectureName());
      return error;
    }
    GetTarget().SetArchitecture(arch, true /*set_platform*/);
  
    m_thread_list = m_minidump_parser->GetThreads();
    m_active_exception = m_minidump_parser->GetExceptionStream();
  
    SetUnixSignals(UnixSignals::Create(GetArchitecture()));
  
    ReadModuleList();
  
    llvm::Optional<lldb::pid_t> pid = m_minidump_parser->GetPid();
    if (!pid) {
      GetTarget().GetDebugger().GetAsyncErrorStream()->PutCString(
          "Unable to retrieve process ID from minidump file, setting process ID "
          "to 1.\n");
      pid = 1;
    }
    SetID(pid.getValue());
  
    return error;
  }
  
  ConstString ProcessMinidump::GetPluginName() { return GetPluginNameStatic(); }
  
  uint32_t ProcessMinidump::GetPluginVersion() { return 1; }
  
  Status ProcessMinidump::DoDestroy() { return Status(); }
  
  void ProcessMinidump::RefreshStateAfterStop() {
  
    if (!m_active_exception)
      return;
  
    constexpr uint32_t BreakpadDumpRequested = 0xFFFFFFFF;
    if (m_active_exception->ExceptionRecord.ExceptionCode ==
        BreakpadDumpRequested) {
      // This "ExceptionCode" value is a sentinel that is sometimes used
      // when generating a dump for a process that hasn't crashed.
  
      // TODO: The definition and use of this "dump requested" constant
      // in Breakpad are actually Linux-specific, and for similar use
      // cases on Mac/Windows it defines differnt constants, referring
      // to them as "simulated" exceptions; consider moving this check
      // down to the OS-specific paths and checking each OS for its own
      // constant.
      return;
    }
  
    lldb::StopInfoSP stop_info;
    lldb::ThreadSP stop_thread;
  
    Process::m_thread_list.SetSelectedThreadByID(m_active_exception->ThreadId);
    stop_thread = Process::m_thread_list.GetSelectedThread();
    ArchSpec arch = GetArchitecture();
  
    if (arch.GetTriple().getOS() == llvm::Triple::Linux) {
      uint32_t signo = m_active_exception->ExceptionRecord.ExceptionCode;
  
      if (signo == 0) {
        // No stop.
        return;
      }
  
      stop_info = StopInfo::CreateStopReasonWithSignal(
          *stop_thread, signo);
    } else if (arch.GetTriple().getVendor() == llvm::Triple::Apple) {
      stop_info = StopInfoMachException::CreateStopReasonWithMachException(
          *stop_thread, m_active_exception->ExceptionRecord.ExceptionCode, 2,
          m_active_exception->ExceptionRecord.ExceptionFlags,
          m_active_exception->ExceptionRecord.ExceptionAddress, 0);
    } else {
      std::string desc;
      llvm::raw_string_ostream desc_stream(desc);
      desc_stream << "Exception "
                  << llvm::format_hex(
                         m_active_exception->ExceptionRecord.ExceptionCode, 8)
                  << " encountered at address "
                  << llvm::format_hex(
                         m_active_exception->ExceptionRecord.ExceptionAddress, 8);
      stop_info = StopInfo::CreateStopReasonWithException(
          *stop_thread, desc_stream.str().c_str());
    }
  
    stop_thread->SetStopInfo(stop_info);
  }
  
  bool ProcessMinidump::IsAlive() { return true; }
  
  bool ProcessMinidump::WarnBeforeDetach() const { return false; }
  
  size_t ProcessMinidump::ReadMemory(lldb::addr_t addr, void *buf, size_t size,
                                     Status &error) {
    // Don't allow the caching that lldb_private::Process::ReadMemory does since
    // we have it all cached in our dump file anyway.
    return DoReadMemory(addr, buf, size, error);
  }
  
  size_t ProcessMinidump::DoReadMemory(lldb::addr_t addr, void *buf, size_t size,
                                       Status &error) {
  
    llvm::ArrayRef<uint8_t> mem = m_minidump_parser->GetMemory(addr, size);
    if (mem.empty()) {
      error.SetErrorString("could not parse memory info");
      return 0;
    }
  
    std::memcpy(buf, mem.data(), mem.size());
    return mem.size();
  }
  
  ArchSpec ProcessMinidump::GetArchitecture() {
    if (!m_is_wow64) {
      return m_minidump_parser->GetArchitecture();
    }
  
    llvm::Triple triple;
    triple.setVendor(llvm::Triple::VendorType::UnknownVendor);
    triple.setArch(llvm::Triple::ArchType::x86);
    triple.setOS(llvm::Triple::OSType::Win32);
    return ArchSpec(triple);
  }
  
  static MemoryRegionInfo GetMemoryRegionInfo(const MemoryRegionInfos &regions,
                                              lldb::addr_t load_addr) {
    MemoryRegionInfo region;
    auto pos = llvm::upper_bound(regions, load_addr);
    if (pos != regions.begin() &&
        std::prev(pos)->GetRange().Contains(load_addr)) {
      return *std::prev(pos);
    }
  
    if (pos == regions.begin())
      region.GetRange().SetRangeBase(0);
    else
      region.GetRange().SetRangeBase(std::prev(pos)->GetRange().GetRangeEnd());
  
    if (pos == regions.end())
      region.GetRange().SetRangeEnd(UINT64_MAX);
    else
      region.GetRange().SetRangeEnd(pos->GetRange().GetRangeBase());
  
    region.SetReadable(MemoryRegionInfo::eNo);
    region.SetWritable(MemoryRegionInfo::eNo);
    region.SetExecutable(MemoryRegionInfo::eNo);
    region.SetMapped(MemoryRegionInfo::eNo);
    return region;
  }
  
  void ProcessMinidump::BuildMemoryRegions() {
    if (m_memory_regions)
      return;
    m_memory_regions.emplace();
    bool is_complete;
    std::tie(*m_memory_regions, is_complete) =
        m_minidump_parser->BuildMemoryRegions();
  
    if (is_complete)
      return;
  
    MemoryRegionInfos to_add;
    ModuleList &modules = GetTarget().GetImages();
    SectionLoadList &load_list = GetTarget().GetSectionLoadList();
    modules.ForEach([&](const ModuleSP &module_sp) {
      SectionList *sections = module_sp->GetSectionList();
      for (size_t i = 0; i < sections->GetSize(); ++i) {
        SectionSP section_sp = sections->GetSectionAtIndex(i);
        addr_t load_addr = load_list.GetSectionLoadAddress(section_sp);
        if (load_addr == LLDB_INVALID_ADDRESS)
          continue;
        MemoryRegionInfo::RangeType section_range(load_addr,
                                                  section_sp->GetByteSize());
        MemoryRegionInfo region =
            ::GetMemoryRegionInfo(*m_memory_regions, load_addr);
        if (region.GetMapped() != MemoryRegionInfo::eYes &&
            region.GetRange().GetRangeBase() <= section_range.GetRangeBase() &&
            section_range.GetRangeEnd() <= region.GetRange().GetRangeEnd()) {
          to_add.emplace_back();
          to_add.back().GetRange() = section_range;
          to_add.back().SetLLDBPermissions(section_sp->GetPermissions());
          to_add.back().SetMapped(MemoryRegionInfo::eYes);
          to_add.back().SetName(module_sp->GetFileSpec().GetPath().c_str());
        }
      }
      return true;
    });
    m_memory_regions->insert(m_memory_regions->end(), to_add.begin(),
                             to_add.end());
    llvm::sort(*m_memory_regions);
  }
  
  Status ProcessMinidump::GetMemoryRegionInfo(lldb::addr_t load_addr,
                                              MemoryRegionInfo &region) {
    BuildMemoryRegions();
    region = ::GetMemoryRegionInfo(*m_memory_regions, load_addr);
    return Status();
  }
  
  Status ProcessMinidump::GetMemoryRegions(MemoryRegionInfos &region_list) {
    BuildMemoryRegions();
    region_list = *m_memory_regions;
    return Status();
  }
  
  void ProcessMinidump::Clear() { Process::m_thread_list.Clear(); }
  
  bool ProcessMinidump::UpdateThreadList(ThreadList &old_thread_list,
                                         ThreadList &new_thread_list) {
    for (const minidump::Thread &thread : m_thread_list) {
      LocationDescriptor context_location = thread.Context;
  
      // If the minidump contains an exception context, use it
      if (m_active_exception != nullptr &&
          m_active_exception->ThreadId == thread.ThreadId) {
        context_location = m_active_exception->ThreadContext;
      }
  
      llvm::ArrayRef<uint8_t> context;
      if (!m_is_wow64)
        context = m_minidump_parser->GetThreadContext(context_location);
      else
        context = m_minidump_parser->GetThreadContextWow64(thread);
  
      lldb::ThreadSP thread_sp(new ThreadMinidump(*this, thread, context));
      new_thread_list.AddThread(thread_sp);
    }
    return new_thread_list.GetSize(false) > 0;
  }
  
  void ProcessMinidump::ReadModuleList() {
    std::vector<const minidump::Module *> filtered_modules =
        m_minidump_parser->GetFilteredModuleList();
  
    Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER));
  
    for (auto module : filtered_modules) {
      std::string name = cantFail(m_minidump_parser->GetMinidumpFile().getString(
          module->ModuleNameRVA));
      const uint64_t load_addr = module->BaseOfImage;
      const uint64_t load_size = module->SizeOfImage;
      LLDB_LOG(log, "found module: name: {0} {1:x10}-{2:x10} size: {3}", name,
               load_addr, load_addr + load_size, load_size);
  
      // check if the process is wow64 - a 32 bit windows process running on a
      // 64 bit windows
      if (llvm::StringRef(name).endswith_lower("wow64.dll")) {
        m_is_wow64 = true;
      }
  
      const auto uuid = m_minidump_parser->GetModuleUUID(module);
      auto file_spec = FileSpec(name, GetArchitecture().GetTriple());
      ModuleSpec module_spec(file_spec, uuid);
      module_spec.GetArchitecture() = GetArchitecture();
      Status error;
      // Try and find a module with a full UUID that matches. This function will
      // add the module to the target if it finds one.
      lldb::ModuleSP module_sp = GetTarget().GetOrCreateModule(module_spec,
                                                       true /* notify */, &error);
      if (!module_sp) {
        // Try and find a module without specifying the UUID and only looking for
        // the file given a basename. We then will look for a partial UUID match
        // if we find any matches. This function will add the module to the
        // target if it finds one, so we need to remove the module from the target
        // if the UUID doesn't match during our manual UUID verification. This
        // allows the "target.exec-search-paths" setting to specify one or more
        // directories that contain executables that can be searched for matches.
        ModuleSpec basename_module_spec(module_spec);
        basename_module_spec.GetUUID().Clear();
        basename_module_spec.GetFileSpec().GetDirectory().Clear();
        module_sp = GetTarget().GetOrCreateModule(basename_module_spec,
                                                  true /* notify */, &error);
        if (module_sp) {
          // We consider the module to be a match if the minidump UUID is a
          // prefix of the actual UUID, or if either of the UUIDs are empty.
          const auto dmp_bytes = uuid.GetBytes();
          const auto mod_bytes = module_sp->GetUUID().GetBytes();
          const bool match = dmp_bytes.empty() || mod_bytes.empty() ||
              mod_bytes.take_front(dmp_bytes.size()) == dmp_bytes;
          if (!match) {
              GetTarget().GetImages().Remove(module_sp);
              module_sp.reset();
          }
        }
      }
      if (module_sp) {
        // Watch out for place holder modules that have different paths, but the
        // same UUID. If the base address is different, create a new module. If
        // we don't then we will end up setting the load address of a different
        // PlaceholderObjectFile and an assertion will fire.
        auto *objfile = module_sp->GetObjectFile();
        if (objfile && objfile->GetPluginName() ==
            PlaceholderObjectFile::GetStaticPluginName()) {
          if (((PlaceholderObjectFile *)objfile)->GetBaseImageAddress() !=
              load_addr)
            module_sp.reset();
        }
      }
      if (!module_sp) {
        // We failed to locate a matching local object file. Fortunately, the
        // minidump format encodes enough information about each module's memory
        // range to allow us to create placeholder modules.
        //
        // This enables most LLDB functionality involving address-to-module
        // translations (ex. identifing the module for a stack frame PC) and
        // modules/sections commands (ex. target modules list, ...)
        LLDB_LOG(log,
                 "Unable to locate the matching object file, creating a "
                 "placeholder module for: {0}",
                 name);
  
        module_sp = Module::CreateModuleFromObjectFile<PlaceholderObjectFile>(
            module_spec, load_addr, load_size);
        GetTarget().GetImages().Append(module_sp, true /* notify */);
      }
  
      bool load_addr_changed = false;
      module_sp->SetLoadAddress(GetTarget(), load_addr, false,
                                load_addr_changed);
    }
  }
  
  bool ProcessMinidump::GetProcessInfo(ProcessInstanceInfo &info) {
    info.Clear();
    info.SetProcessID(GetID());
    info.SetArchitecture(GetArchitecture());
    lldb::ModuleSP module_sp = GetTarget().GetExecutableModule();
    if (module_sp) {
      const bool add_exe_file_as_first_arg = false;
      info.SetExecutableFile(GetTarget().GetExecutableModule()->GetFileSpec(),
                             add_exe_file_as_first_arg);
    }
    return true;
  }
  
  // For minidumps there's no runtime generated code so we don't need JITLoader(s)
  // Avoiding them will also speed up minidump loading since JITLoaders normally
  // try to set up symbolic breakpoints, which in turn may force loading more
  // debug information than needed.
  JITLoaderList &ProcessMinidump::GetJITLoaders() {
    if (!m_jit_loaders_up) {
      m_jit_loaders_up = std::make_unique<JITLoaderList>();
    }
    return *m_jit_loaders_up;
  }
  
  #define INIT_BOOL(VAR, LONG, SHORT, DESC) \
      VAR(LLDB_OPT_SET_1, false, LONG, SHORT, DESC, false, true)
  #define APPEND_OPT(VAR) \
      m_option_group.Append(&VAR, LLDB_OPT_SET_ALL, LLDB_OPT_SET_1)
  
  class CommandObjectProcessMinidumpDump : public CommandObjectParsed {
  private:
    OptionGroupOptions m_option_group;
    OptionGroupBoolean m_dump_all;
    OptionGroupBoolean m_dump_directory;
    OptionGroupBoolean m_dump_linux_cpuinfo;
    OptionGroupBoolean m_dump_linux_proc_status;
    OptionGroupBoolean m_dump_linux_lsb_release;
    OptionGroupBoolean m_dump_linux_cmdline;
    OptionGroupBoolean m_dump_linux_environ;
    OptionGroupBoolean m_dump_linux_auxv;
    OptionGroupBoolean m_dump_linux_maps;
    OptionGroupBoolean m_dump_linux_proc_stat;
    OptionGroupBoolean m_dump_linux_proc_uptime;
    OptionGroupBoolean m_dump_linux_proc_fd;
    OptionGroupBoolean m_dump_linux_all;
    OptionGroupBoolean m_fb_app_data;
    OptionGroupBoolean m_fb_build_id;
    OptionGroupBoolean m_fb_version;
    OptionGroupBoolean m_fb_java_stack;
    OptionGroupBoolean m_fb_dalvik;
    OptionGroupBoolean m_fb_unwind;
    OptionGroupBoolean m_fb_error_log;
    OptionGroupBoolean m_fb_app_state;
    OptionGroupBoolean m_fb_abort;
    OptionGroupBoolean m_fb_thread;
    OptionGroupBoolean m_fb_logcat;
    OptionGroupBoolean m_fb_all;
  
    void SetDefaultOptionsIfNoneAreSet() {
      if (m_dump_all.GetOptionValue().GetCurrentValue() ||
          m_dump_linux_all.GetOptionValue().GetCurrentValue() ||
          m_fb_all.GetOptionValue().GetCurrentValue() ||
          m_dump_directory.GetOptionValue().GetCurrentValue() ||
          m_dump_linux_cpuinfo.GetOptionValue().GetCurrentValue() ||
          m_dump_linux_proc_status.GetOptionValue().GetCurrentValue() ||
          m_dump_linux_lsb_release.GetOptionValue().GetCurrentValue() ||
          m_dump_linux_cmdline.GetOptionValue().GetCurrentValue() ||
          m_dump_linux_environ.GetOptionValue().GetCurrentValue() ||
          m_dump_linux_auxv.GetOptionValue().GetCurrentValue() ||
          m_dump_linux_maps.GetOptionValue().GetCurrentValue() ||
          m_dump_linux_proc_stat.GetOptionValue().GetCurrentValue() ||
          m_dump_linux_proc_uptime.GetOptionValue().GetCurrentValue() ||
          m_dump_linux_proc_fd.GetOptionValue().GetCurrentValue() ||
          m_fb_app_data.GetOptionValue().GetCurrentValue() ||
          m_fb_build_id.GetOptionValue().GetCurrentValue() ||
          m_fb_version.GetOptionValue().GetCurrentValue() ||
          m_fb_java_stack.GetOptionValue().GetCurrentValue() ||
          m_fb_dalvik.GetOptionValue().GetCurrentValue() ||
          m_fb_unwind.GetOptionValue().GetCurrentValue() ||
          m_fb_error_log.GetOptionValue().GetCurrentValue() ||
          m_fb_app_state.GetOptionValue().GetCurrentValue() ||
          m_fb_abort.GetOptionValue().GetCurrentValue() ||
          m_fb_thread.GetOptionValue().GetCurrentValue() ||
          m_fb_logcat.GetOptionValue().GetCurrentValue())
        return;
      // If no options were set, then dump everything
      m_dump_all.GetOptionValue().SetCurrentValue(true);
    }
    bool DumpAll() const {
      return m_dump_all.GetOptionValue().GetCurrentValue();
    }
    bool DumpDirectory() const {
      return DumpAll() ||
          m_dump_directory.GetOptionValue().GetCurrentValue();
    }
    bool DumpLinux() const {
      return DumpAll() || m_dump_linux_all.GetOptionValue().GetCurrentValue();
    }
    bool DumpLinuxCPUInfo() const {
      return DumpLinux() ||
          m_dump_linux_cpuinfo.GetOptionValue().GetCurrentValue();
    }
    bool DumpLinuxProcStatus() const {
      return DumpLinux() ||
          m_dump_linux_proc_status.GetOptionValue().GetCurrentValue();
    }
    bool DumpLinuxProcStat() const {
      return DumpLinux() ||
          m_dump_linux_proc_stat.GetOptionValue().GetCurrentValue();
    }
    bool DumpLinuxLSBRelease() const {
      return DumpLinux() ||
          m_dump_linux_lsb_release.GetOptionValue().GetCurrentValue();
    }
    bool DumpLinuxCMDLine() const {
      return DumpLinux() ||
          m_dump_linux_cmdline.GetOptionValue().GetCurrentValue();
    }
    bool DumpLinuxEnviron() const {
      return DumpLinux() ||
          m_dump_linux_environ.GetOptionValue().GetCurrentValue();
    }
    bool DumpLinuxAuxv() const {
      return DumpLinux() ||
          m_dump_linux_auxv.GetOptionValue().GetCurrentValue();
    }
    bool DumpLinuxMaps() const {
      return DumpLinux() ||
          m_dump_linux_maps.GetOptionValue().GetCurrentValue();
    }
    bool DumpLinuxProcUptime() const {
      return DumpLinux() ||
          m_dump_linux_proc_uptime.GetOptionValue().GetCurrentValue();
    }
    bool DumpLinuxProcFD() const {
      return DumpLinux() ||
          m_dump_linux_proc_fd.GetOptionValue().GetCurrentValue();
    }
    bool DumpFacebook() const {
      return DumpAll() || m_fb_all.GetOptionValue().GetCurrentValue();
    }
    bool DumpFacebookAppData() const {
      return DumpFacebook() || m_fb_app_data.GetOptionValue().GetCurrentValue();
    }
    bool DumpFacebookBuildID() const {
      return DumpFacebook() || m_fb_build_id.GetOptionValue().GetCurrentValue();
    }
    bool DumpFacebookVersionName() const {
      return DumpFacebook() || m_fb_version.GetOptionValue().GetCurrentValue();
    }
    bool DumpFacebookJavaStack() const {
      return DumpFacebook() || m_fb_java_stack.GetOptionValue().GetCurrentValue();
    }
    bool DumpFacebookDalvikInfo() const {
      return DumpFacebook() || m_fb_dalvik.GetOptionValue().GetCurrentValue();
    }
    bool DumpFacebookUnwindSymbols() const {
      return DumpFacebook() || m_fb_unwind.GetOptionValue().GetCurrentValue();
    }
    bool DumpFacebookErrorLog() const {
      return DumpFacebook() || m_fb_error_log.GetOptionValue().GetCurrentValue();
    }
    bool DumpFacebookAppStateLog() const {
      return DumpFacebook() || m_fb_app_state.GetOptionValue().GetCurrentValue();
    }
    bool DumpFacebookAbortReason() const {
      return DumpFacebook() || m_fb_abort.GetOptionValue().GetCurrentValue();
    }
    bool DumpFacebookThreadName() const {
      return DumpFacebook() || m_fb_thread.GetOptionValue().GetCurrentValue();
    }
    bool DumpFacebookLogcat() const {
      return DumpFacebook() || m_fb_logcat.GetOptionValue().GetCurrentValue();
    }
  public:
    CommandObjectProcessMinidumpDump(CommandInterpreter &interpreter)
    : CommandObjectParsed(interpreter, "process plugin dump",
        "Dump information from the minidump file.", nullptr),
      m_option_group(),
      INIT_BOOL(m_dump_all, "all", 'a',
                "Dump the everything in the minidump."),
      INIT_BOOL(m_dump_directory, "directory", 'd',
                "Dump the minidump directory map."),
      INIT_BOOL(m_dump_linux_cpuinfo, "cpuinfo", 'C',
                "Dump linux /proc/cpuinfo."),
      INIT_BOOL(m_dump_linux_proc_status, "status", 's',
                "Dump linux /proc/<pid>/status."),
      INIT_BOOL(m_dump_linux_lsb_release, "lsb-release", 'r',
                "Dump linux /etc/lsb-release."),
      INIT_BOOL(m_dump_linux_cmdline, "cmdline", 'c',
                "Dump linux /proc/<pid>/cmdline."),
      INIT_BOOL(m_dump_linux_environ, "environ", 'e',
                "Dump linux /proc/<pid>/environ."),
      INIT_BOOL(m_dump_linux_auxv, "auxv", 'x',
                "Dump linux /proc/<pid>/auxv."),
      INIT_BOOL(m_dump_linux_maps, "maps", 'm',
                "Dump linux /proc/<pid>/maps."),
      INIT_BOOL(m_dump_linux_proc_stat, "stat", 'S',
                "Dump linux /proc/<pid>/stat."),
      INIT_BOOL(m_dump_linux_proc_uptime, "uptime", 'u',
                "Dump linux process uptime."),
      INIT_BOOL(m_dump_linux_proc_fd, "fd", 'f',
                "Dump linux /proc/<pid>/fd."),
      INIT_BOOL(m_dump_linux_all, "linux", 'l',
                "Dump all linux streams."),
      INIT_BOOL(m_fb_app_data, "fb-app-data", 1,
                "Dump Facebook application custom data."),
      INIT_BOOL(m_fb_build_id, "fb-build-id", 2,
                "Dump the Facebook build ID."),
      INIT_BOOL(m_fb_version, "fb-version", 3,
                "Dump Facebook application version string."),
      INIT_BOOL(m_fb_java_stack, "fb-java-stack", 4,
                "Dump Facebook java stack."),
      INIT_BOOL(m_fb_dalvik, "fb-dalvik-info", 5,
                "Dump Facebook Dalvik info."),
      INIT_BOOL(m_fb_unwind, "fb-unwind-symbols", 6,
                "Dump Facebook unwind symbols."),
      INIT_BOOL(m_fb_error_log, "fb-error-log", 7,
                "Dump Facebook error log."),
      INIT_BOOL(m_fb_app_state, "fb-app-state-log", 8,
                "Dump Facebook java stack."),
      INIT_BOOL(m_fb_abort, "fb-abort-reason", 9,
                "Dump Facebook abort reason."),
      INIT_BOOL(m_fb_thread, "fb-thread-name", 10,
                "Dump Facebook thread name."),
      INIT_BOOL(m_fb_logcat, "fb-logcat", 11,
                "Dump Facebook logcat."),
      INIT_BOOL(m_fb_all, "facebook", 12, "Dump all Facebook streams.") {
      APPEND_OPT(m_dump_all);
      APPEND_OPT(m_dump_directory);
      APPEND_OPT(m_dump_linux_cpuinfo);
      APPEND_OPT(m_dump_linux_proc_status);
      APPEND_OPT(m_dump_linux_lsb_release);
      APPEND_OPT(m_dump_linux_cmdline);
      APPEND_OPT(m_dump_linux_environ);
      APPEND_OPT(m_dump_linux_auxv);
      APPEND_OPT(m_dump_linux_maps);
      APPEND_OPT(m_dump_linux_proc_stat);
      APPEND_OPT(m_dump_linux_proc_uptime);
      APPEND_OPT(m_dump_linux_proc_fd);
      APPEND_OPT(m_dump_linux_all);
      APPEND_OPT(m_fb_app_data);
      APPEND_OPT(m_fb_build_id);
      APPEND_OPT(m_fb_version);
      APPEND_OPT(m_fb_java_stack);
      APPEND_OPT(m_fb_dalvik);
      APPEND_OPT(m_fb_unwind);
      APPEND_OPT(m_fb_error_log);
      APPEND_OPT(m_fb_app_state);
      APPEND_OPT(m_fb_abort);
      APPEND_OPT(m_fb_thread);
      APPEND_OPT(m_fb_logcat);
      APPEND_OPT(m_fb_all);
      m_option_group.Finalize();
    }
  
    ~CommandObjectProcessMinidumpDump() override {}
  
    Options *GetOptions() override { return &m_option_group; }
  
    bool DoExecute(Args &command, CommandReturnObject &result) override {
      const size_t argc = command.GetArgumentCount();
      if (argc > 0) {
        result.AppendErrorWithFormat("'%s' take no arguments, only options",
                                     m_cmd_name.c_str());
        result.SetStatus(eReturnStatusFailed);
        return false;
      }
      SetDefaultOptionsIfNoneAreSet();
  
      ProcessMinidump *process = static_cast<ProcessMinidump *>(
          m_interpreter.GetExecutionContext().GetProcessPtr());
      result.SetStatus(eReturnStatusSuccessFinishResult);
      Stream &s = result.GetOutputStream();
      MinidumpParser &minidump = *process->m_minidump_parser;
      if (DumpDirectory()) {
        s.Printf("RVA        SIZE       TYPE       StreamType\n");
        s.Printf("---------- ---------- ---------- --------------------------\n");
        for (const auto &stream_desc : minidump.GetMinidumpFile().streams())
          s.Printf(
              "0x%8.8x 0x%8.8x 0x%8.8x %s\n", (uint32_t)stream_desc.Location.RVA,
              (uint32_t)stream_desc.Location.DataSize,
              (unsigned)(StreamType)stream_desc.Type,
              MinidumpParser::GetStreamTypeAsString(stream_desc.Type).data());
        s.Printf("\n");
      }
      auto DumpTextStream = [&](StreamType stream_type,
                                llvm::StringRef label) -> void {
        auto bytes = minidump.GetStream(stream_type);
        if (!bytes.empty()) {
          if (label.empty())
            label = MinidumpParser::GetStreamTypeAsString(stream_type);
          s.Printf("%s:\n%s\n\n", label.data(), bytes.data());
        }
      };
      auto DumpBinaryStream = [&](StreamType stream_type,
                                  llvm::StringRef label) -> void {
        auto bytes = minidump.GetStream(stream_type);
        if (!bytes.empty()) {
          if (label.empty())
            label = MinidumpParser::GetStreamTypeAsString(stream_type);
          s.Printf("%s:\n", label.data());
          DataExtractor data(bytes.data(), bytes.size(), eByteOrderLittle,
                             process->GetAddressByteSize());
          DumpDataExtractor(data, &s, 0, lldb::eFormatBytesWithASCII, 1,
                            bytes.size(), 16, 0, 0, 0);
          s.Printf("\n\n");
        }
      };
  
      if (DumpLinuxCPUInfo())
        DumpTextStream(StreamType::LinuxCPUInfo, "/proc/cpuinfo");
      if (DumpLinuxProcStatus())
        DumpTextStream(StreamType::LinuxProcStatus, "/proc/PID/status");
      if (DumpLinuxLSBRelease())
        DumpTextStream(StreamType::LinuxLSBRelease, "/etc/lsb-release");
      if (DumpLinuxCMDLine())
        DumpTextStream(StreamType::LinuxCMDLine, "/proc/PID/cmdline");
      if (DumpLinuxEnviron())
        DumpTextStream(StreamType::LinuxEnviron, "/proc/PID/environ");
      if (DumpLinuxAuxv())
        DumpBinaryStream(StreamType::LinuxAuxv, "/proc/PID/auxv");
      if (DumpLinuxMaps())
        DumpTextStream(StreamType::LinuxMaps, "/proc/PID/maps");
      if (DumpLinuxProcStat())
        DumpTextStream(StreamType::LinuxProcStat, "/proc/PID/stat");
      if (DumpLinuxProcUptime())
        DumpTextStream(StreamType::LinuxProcUptime, "uptime");
      if (DumpLinuxProcFD())
        DumpTextStream(StreamType::LinuxProcFD, "/proc/PID/fd");
      if (DumpFacebookAppData())
        DumpTextStream(StreamType::FacebookAppCustomData,
                       "Facebook App Data");
      if (DumpFacebookBuildID()) {
        auto bytes = minidump.GetStream(StreamType::FacebookBuildID);
        if (bytes.size() >= 4) {
          DataExtractor data(bytes.data(), bytes.size(), eByteOrderLittle,
                             process->GetAddressByteSize());
          lldb::offset_t offset = 0;
          uint32_t build_id = data.GetU32(&offset);
          s.Printf("Facebook Build ID:\n");
          s.Printf("%u\n", build_id);
          s.Printf("\n");
        }
      }
      if (DumpFacebookVersionName())
        DumpTextStream(StreamType::FacebookAppVersionName,
                       "Facebook Version String");
      if (DumpFacebookJavaStack())
        DumpTextStream(StreamType::FacebookJavaStack,
                       "Facebook Java Stack");
      if (DumpFacebookDalvikInfo())
        DumpTextStream(StreamType::FacebookDalvikInfo,
                       "Facebook Dalvik Info");
      if (DumpFacebookUnwindSymbols())
        DumpBinaryStream(StreamType::FacebookUnwindSymbols,
                         "Facebook Unwind Symbols Bytes");
      if (DumpFacebookErrorLog())
        DumpTextStream(StreamType::FacebookDumpErrorLog,
                       "Facebook Error Log");
      if (DumpFacebookAppStateLog())
        DumpTextStream(StreamType::FacebookAppStateLog,
                       "Faceook Application State Log");
      if (DumpFacebookAbortReason())
        DumpTextStream(StreamType::FacebookAbortReason,
                       "Facebook Abort Reason");
      if (DumpFacebookThreadName())
        DumpTextStream(StreamType::FacebookThreadName,
                       "Facebook Thread Name");
      if (DumpFacebookLogcat())
        DumpTextStream(StreamType::FacebookLogcat,
                       "Facebook Logcat");
      return true;
    }
  };
  
  class CommandObjectMultiwordProcessMinidump : public CommandObjectMultiword {
  public:
    CommandObjectMultiwordProcessMinidump(CommandInterpreter &interpreter)
      : CommandObjectMultiword(interpreter, "process plugin",
            "Commands for operating on a ProcessMinidump process.",
            "process plugin <subcommand> [<subcommand-options>]") {
      LoadSubCommand("dump",
          CommandObjectSP(new CommandObjectProcessMinidumpDump(interpreter)));
    }
  
    ~CommandObjectMultiwordProcessMinidump() override {}
  };
  
  CommandObject *ProcessMinidump::GetPluginCommandObject() {
    if (!m_command_sp)
      m_command_sp = std::make_shared<CommandObjectMultiwordProcessMinidump>(
          GetTarget().GetDebugger().GetCommandInterpreter());
    return m_command_sp.get();
  }
  