//===-- DynamicLoaderMacOS.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 "lldb/Breakpoint/StoppointCallbackContext.h" #include "lldb/Core/Debugger.h" #include "lldb/Core/Module.h" #include "lldb/Core/PluginManager.h" #include "lldb/Core/Section.h" #include "lldb/Symbol/ObjectFile.h" #include "lldb/Symbol/SymbolVendor.h" #include "lldb/Target/ABI.h" #include "lldb/Target/SectionLoadList.h" #include "lldb/Target/StackFrame.h" #include "lldb/Target/Target.h" #include "lldb/Target/Thread.h" #include "lldb/Utility/LLDBLog.h" #include "lldb/Utility/Log.h" #include "lldb/Utility/State.h" #include "DynamicLoaderDarwin.h" #include "DynamicLoaderMacOS.h" #include "Plugins/TypeSystem/Clang/TypeSystemClang.h" using namespace lldb; using namespace lldb_private; // Create an instance of this class. This function is filled into the plugin // info class that gets handed out by the plugin factory and allows the lldb to // instantiate an instance of this class. DynamicLoader *DynamicLoaderMacOS::CreateInstance(Process *process, bool force) { bool create = force; if (!create) { create = true; Module *exe_module = process->GetTarget().GetExecutableModulePointer(); if (exe_module) { ObjectFile *object_file = exe_module->GetObjectFile(); if (object_file) { create = (object_file->GetStrata() == ObjectFile::eStrataUser); } } if (create) { const llvm::Triple &triple_ref = process->GetTarget().GetArchitecture().GetTriple(); switch (triple_ref.getOS()) { case llvm::Triple::Darwin: case llvm::Triple::MacOSX: case llvm::Triple::IOS: case llvm::Triple::TvOS: case llvm::Triple::WatchOS: case llvm::Triple::XROS: // NEED_BRIDGEOS_TRIPLE case llvm::Triple::BridgeOS: create = triple_ref.getVendor() == llvm::Triple::Apple; break; default: create = false; break; } } } if (!UseDYLDSPI(process)) { create = false; } if (create) return new DynamicLoaderMacOS(process); return nullptr; } // Constructor DynamicLoaderMacOS::DynamicLoaderMacOS(Process *process) : DynamicLoaderDarwin(process), m_image_infos_stop_id(UINT32_MAX), m_break_id(LLDB_INVALID_BREAK_ID), m_dyld_handover_break_id(LLDB_INVALID_BREAK_ID), m_mutex(), m_maybe_image_infos_address(LLDB_INVALID_ADDRESS), m_libsystem_fully_initalized(false) {} // Destructor DynamicLoaderMacOS::~DynamicLoaderMacOS() { if (LLDB_BREAK_ID_IS_VALID(m_break_id)) m_process->GetTarget().RemoveBreakpointByID(m_break_id); if (LLDB_BREAK_ID_IS_VALID(m_dyld_handover_break_id)) m_process->GetTarget().RemoveBreakpointByID(m_dyld_handover_break_id); } bool DynamicLoaderMacOS::ProcessDidExec() { std::lock_guard baseclass_guard(GetMutex()); bool did_exec = false; if (m_process) { // If we are stopped after an exec, we will have only one thread... if (m_process->GetThreadList().GetSize() == 1) { // Maybe we still have an image infos address around? If so see // if that has changed, and if so we have exec'ed. if (m_maybe_image_infos_address != LLDB_INVALID_ADDRESS) { lldb::addr_t image_infos_address = m_process->GetImageInfoAddress(); if (image_infos_address != m_maybe_image_infos_address) { // We don't really have to reset this here, since we are going to // call DoInitialImageFetch right away to handle the exec. But in // case anybody looks at it in the meantime, it can't hurt. m_maybe_image_infos_address = image_infos_address; did_exec = true; } } if (!did_exec) { // See if we are stopped at '_dyld_start' ThreadSP thread_sp(m_process->GetThreadList().GetThreadAtIndex(0)); if (thread_sp) { lldb::StackFrameSP frame_sp(thread_sp->GetStackFrameAtIndex(0)); if (frame_sp) { const Symbol *symbol = frame_sp->GetSymbolContext(eSymbolContextSymbol).symbol; if (symbol) { if (symbol->GetName() == "_dyld_start") did_exec = true; } } } } } } if (did_exec) { m_libpthread_module_wp.reset(); m_pthread_getspecific_addr.Clear(); m_libsystem_fully_initalized = false; } return did_exec; } // Clear out the state of this class. void DynamicLoaderMacOS::DoClear() { std::lock_guard guard(m_mutex); if (LLDB_BREAK_ID_IS_VALID(m_break_id)) m_process->GetTarget().RemoveBreakpointByID(m_break_id); if (LLDB_BREAK_ID_IS_VALID(m_dyld_handover_break_id)) m_process->GetTarget().RemoveBreakpointByID(m_dyld_handover_break_id); m_break_id = LLDB_INVALID_BREAK_ID; m_dyld_handover_break_id = LLDB_INVALID_BREAK_ID; m_libsystem_fully_initalized = false; } bool DynamicLoaderMacOS::IsFullyInitialized() { if (m_libsystem_fully_initalized) return true; StructuredData::ObjectSP process_state_sp( m_process->GetDynamicLoaderProcessState()); if (!process_state_sp) return true; if (process_state_sp->GetAsDictionary()->HasKey("error")) return true; if (!process_state_sp->GetAsDictionary()->HasKey("process_state string")) return true; std::string proc_state = process_state_sp->GetAsDictionary() ->GetValueForKey("process_state string") ->GetAsString() ->GetValue() .str(); if (proc_state == "dyld_process_state_not_started" || proc_state == "dyld_process_state_dyld_initialized" || proc_state == "dyld_process_state_terminated_before_inits") { return false; } m_libsystem_fully_initalized = true; return true; } // Check if we have found DYLD yet bool DynamicLoaderMacOS::DidSetNotificationBreakpoint() { return LLDB_BREAK_ID_IS_VALID(m_break_id); } void DynamicLoaderMacOS::ClearNotificationBreakpoint() { if (LLDB_BREAK_ID_IS_VALID(m_break_id)) { m_process->GetTarget().RemoveBreakpointByID(m_break_id); m_break_id = LLDB_INVALID_BREAK_ID; } } // Try and figure out where dyld is by first asking the Process if it knows // (which currently calls down in the lldb::Process to get the DYLD info // (available on SnowLeopard only). If that fails, then check in the default // addresses. void DynamicLoaderMacOS::DoInitialImageFetch() { Log *log = GetLog(LLDBLog::DynamicLoader); // Remove any binaries we pre-loaded in the Target before // launching/attaching. If the same binaries are present in the process, // we'll get them from the shared module cache, we won't need to re-load them // from disk. UnloadAllImages(); StructuredData::ObjectSP all_image_info_json_sp( m_process->GetLoadedDynamicLibrariesInfos()); ImageInfo::collection image_infos; if (all_image_info_json_sp.get() && all_image_info_json_sp->GetAsDictionary() && all_image_info_json_sp->GetAsDictionary()->HasKey("images") && all_image_info_json_sp->GetAsDictionary() ->GetValueForKey("images") ->GetAsArray()) { if (JSONImageInformationIntoImageInfo(all_image_info_json_sp, image_infos)) { LLDB_LOGF(log, "Initial module fetch: Adding %" PRId64 " modules.\n", (uint64_t)image_infos.size()); UpdateSpecialBinariesFromNewImageInfos(image_infos); AddModulesUsingImageInfos(image_infos); } } m_dyld_image_infos_stop_id = m_process->GetStopID(); m_maybe_image_infos_address = m_process->GetImageInfoAddress(); } bool DynamicLoaderMacOS::NeedToDoInitialImageFetch() { return true; } // Static callback function that gets called when our DYLD notification // breakpoint gets hit. We update all of our image infos and then let our super // class DynamicLoader class decide if we should stop or not (based on global // preference). bool DynamicLoaderMacOS::NotifyBreakpointHit(void *baton, StoppointCallbackContext *context, lldb::user_id_t break_id, lldb::user_id_t break_loc_id) { // // Our breakpoint on // // void lldb_image_notifier(enum dyld_image_mode mode, uint32_t infoCount, // const dyld_image_info info[]) // // has been hit. We need to read the arguments. DynamicLoaderMacOS *dyld_instance = (DynamicLoaderMacOS *)baton; ExecutionContext exe_ctx(context->exe_ctx_ref); Process *process = exe_ctx.GetProcessPtr(); // This is a sanity check just in case this dyld_instance is an old dyld // plugin's breakpoint still lying around. if (process != dyld_instance->m_process) return false; if (dyld_instance->m_image_infos_stop_id != UINT32_MAX && process->GetStopID() < dyld_instance->m_image_infos_stop_id) { return false; } const lldb::ABISP &abi = process->GetABI(); if (abi) { // Build up the value array to store the three arguments given above, then // get the values from the ABI: TypeSystemClangSP scratch_ts_sp = ScratchTypeSystemClang::GetForTarget(process->GetTarget()); if (!scratch_ts_sp) return false; ValueList argument_values; Value mode_value; // enum dyld_notify_mode { dyld_notify_adding=0, // dyld_notify_removing=1, dyld_notify_remove_all=2, // dyld_notify_dyld_moved=3 }; Value count_value; // uint32_t Value headers_value; // struct dyld_image_info machHeaders[] CompilerType clang_void_ptr_type = scratch_ts_sp->GetBasicType(eBasicTypeVoid).GetPointerType(); CompilerType clang_uint32_type = scratch_ts_sp->GetBuiltinTypeForEncodingAndBitSize(lldb::eEncodingUint, 32); CompilerType clang_uint64_type = scratch_ts_sp->GetBuiltinTypeForEncodingAndBitSize(lldb::eEncodingUint, 32); mode_value.SetValueType(Value::ValueType::Scalar); mode_value.SetCompilerType(clang_uint32_type); count_value.SetValueType(Value::ValueType::Scalar); count_value.SetCompilerType(clang_uint32_type); headers_value.SetValueType(Value::ValueType::Scalar); headers_value.SetCompilerType(clang_void_ptr_type); argument_values.PushValue(mode_value); argument_values.PushValue(count_value); argument_values.PushValue(headers_value); if (abi->GetArgumentValues(exe_ctx.GetThreadRef(), argument_values)) { uint32_t dyld_mode = argument_values.GetValueAtIndex(0)->GetScalar().UInt(-1); if (dyld_mode != static_cast(-1)) { // Okay the mode was right, now get the number of elements, and the // array of new elements... uint32_t image_infos_count = argument_values.GetValueAtIndex(1)->GetScalar().UInt(-1); if (image_infos_count != static_cast(-1)) { addr_t header_array = argument_values.GetValueAtIndex(2)->GetScalar().ULongLong(-1); if (header_array != static_cast(-1)) { std::vector image_load_addresses; // header_array points to an array of image_infos_count elements, // each is // struct dyld_image_info { // const struct mach_header* imageLoadAddress; // const char* imageFilePath; // uintptr_t imageFileModDate; // }; // // and we only need the imageLoadAddress fields. const int addrsize = process->GetTarget().GetArchitecture().GetAddressByteSize(); for (uint64_t i = 0; i < image_infos_count; i++) { Status error; addr_t dyld_image_info = header_array + (addrsize * 3 * i); addr_t addr = process->ReadPointerFromMemory(dyld_image_info, error); if (error.Success()) { image_load_addresses.push_back(addr); } else { Debugger::ReportWarning( "DynamicLoaderMacOS::NotifyBreakpointHit unable " "to read binary mach-o load address at 0x%" PRIx64, addr); } } if (dyld_mode == 0) { // dyld_notify_adding if (process->GetTarget().GetImages().GetSize() == 0) { // When all images have been removed, we're doing the // dyld handover from a launch-dyld to a shared-cache-dyld, // and we've just hit our one-shot address breakpoint in // the sc-dyld. Note that the image addresses passed to // this function are inferior sizeof(void*) not uint64_t's // like our normal notification, so don't even look at // image_load_addresses. dyld_instance->ClearDYLDHandoverBreakpoint(); dyld_instance->DoInitialImageFetch(); dyld_instance->SetNotificationBreakpoint(); } else { dyld_instance->AddBinaries(image_load_addresses); } } else if (dyld_mode == 1) { // dyld_notify_removing dyld_instance->UnloadImages(image_load_addresses); } else if (dyld_mode == 2) { // dyld_notify_remove_all dyld_instance->UnloadAllImages(); } else if (dyld_mode == 3 && image_infos_count == 1) { // dyld_image_dyld_moved dyld_instance->ClearNotificationBreakpoint(); dyld_instance->UnloadAllImages(); dyld_instance->ClearDYLDModule(); process->GetTarget().GetImages().Clear(); process->GetTarget().GetSectionLoadList().Clear(); addr_t all_image_infos = process->GetImageInfoAddress(); int addr_size = process->GetTarget().GetArchitecture().GetAddressByteSize(); addr_t notification_location = all_image_infos + 4 + // version 4 + // infoArrayCount addr_size; // infoArray Status error; addr_t notification_addr = process->ReadPointerFromMemory(notification_location, error); if (!error.Success()) { Debugger::ReportWarning( "DynamicLoaderMacOS::NotifyBreakpointHit unable " "to read address of dyld-handover notification function at " "0x%" PRIx64, notification_location); } else { notification_addr = process->FixCodeAddress(notification_addr); dyld_instance->SetDYLDHandoverBreakpoint(notification_addr); } } } } } } } else { Target &target = process->GetTarget(); Debugger::ReportWarning( "no ABI plugin located for triple " + target.GetArchitecture().GetTriple().getTriple() + ": shared libraries will not be registered", target.GetDebugger().GetID()); } // Return true to stop the target, false to just let the target run return dyld_instance->GetStopWhenImagesChange(); } void DynamicLoaderMacOS::AddBinaries( const std::vector &load_addresses) { Log *log = GetLog(LLDBLog::DynamicLoader); ImageInfo::collection image_infos; LLDB_LOGF(log, "Adding %" PRId64 " modules.", (uint64_t)load_addresses.size()); StructuredData::ObjectSP binaries_info_sp = m_process->GetLoadedDynamicLibrariesInfos(load_addresses); if (binaries_info_sp.get() && binaries_info_sp->GetAsDictionary() && binaries_info_sp->GetAsDictionary()->HasKey("images") && binaries_info_sp->GetAsDictionary() ->GetValueForKey("images") ->GetAsArray() && binaries_info_sp->GetAsDictionary() ->GetValueForKey("images") ->GetAsArray() ->GetSize() == load_addresses.size()) { if (JSONImageInformationIntoImageInfo(binaries_info_sp, image_infos)) { UpdateSpecialBinariesFromNewImageInfos(image_infos); AddModulesUsingImageInfos(image_infos); } m_dyld_image_infos_stop_id = m_process->GetStopID(); } } // Dump the _dyld_all_image_infos members and all current image infos that we // have parsed to the file handle provided. void DynamicLoaderMacOS::PutToLog(Log *log) const { if (log == nullptr) return; } // Look in dyld's dyld_all_image_infos structure for the address // of the notification function. // We can find the address of dyld_all_image_infos by a system // call, even if we don't have a dyld binary registered in lldb's // image list. // At process launch time - before dyld has executed any instructions - // the address of the notification function is not a resolved vm address // yet. dyld_all_image_infos also has a field with its own address // in it, and this will also be unresolved when we're at this state. // So we can compare the address of the object with this field and if // they differ, dyld hasn't started executing yet and we can't get the // notification address this way. addr_t DynamicLoaderMacOS::GetNotificationFuncAddrFromImageInfos() { addr_t notification_addr = LLDB_INVALID_ADDRESS; if (!m_process) return notification_addr; addr_t all_image_infos_addr = m_process->GetImageInfoAddress(); if (all_image_infos_addr == LLDB_INVALID_ADDRESS) return notification_addr; const uint32_t addr_size = m_process->GetTarget().GetArchitecture().GetAddressByteSize(); offset_t registered_infos_addr_offset = sizeof(uint32_t) + // version sizeof(uint32_t) + // infoArrayCount addr_size + // infoArray addr_size + // notification addr_size + // processDetachedFromSharedRegion + // libSystemInitialized + pad addr_size + // dyldImageLoadAddress addr_size + // jitInfo addr_size + // dyldVersion addr_size + // errorMessage addr_size + // terminationFlags addr_size + // coreSymbolicationShmPage addr_size + // systemOrderFlag addr_size + // uuidArrayCount addr_size; // uuidArray // dyldAllImageInfosAddress // If the dyldAllImageInfosAddress does not match // the actual address of this struct, dyld has not started // executing yet. The 'notification' field can't be used by // lldb until it's resolved to an actual address. Status error; addr_t registered_infos_addr = m_process->ReadPointerFromMemory( all_image_infos_addr + registered_infos_addr_offset, error); if (!error.Success()) return notification_addr; if (registered_infos_addr != all_image_infos_addr) return notification_addr; offset_t notification_fptr_offset = sizeof(uint32_t) + // version sizeof(uint32_t) + // infoArrayCount addr_size; // infoArray addr_t notification_fptr = m_process->ReadPointerFromMemory( all_image_infos_addr + notification_fptr_offset, error); if (error.Success()) notification_addr = m_process->FixCodeAddress(notification_fptr); return notification_addr; } // We want to put a breakpoint on dyld's lldb_image_notifier() // but we may have attached to the process during the // transition from on-disk-dyld to shared-cache-dyld, so there's // officially no dyld binary loaded in the process (libdyld will // report none when asked), but the kernel can find the dyld_all_image_infos // struct and the function pointer for lldb_image_notifier is in // that struct. bool DynamicLoaderMacOS::SetNotificationBreakpoint() { // First try to find the notification breakpoint function by name if (m_break_id == LLDB_INVALID_BREAK_ID) { ModuleSP dyld_sp(GetDYLDModule()); if (dyld_sp) { bool internal = true; bool hardware = false; LazyBool skip_prologue = eLazyBoolNo; FileSpecList *source_files = nullptr; FileSpecList dyld_filelist; dyld_filelist.Append(dyld_sp->GetFileSpec()); Breakpoint *breakpoint = m_process->GetTarget() .CreateBreakpoint(&dyld_filelist, source_files, "lldb_image_notifier", eFunctionNameTypeFull, eLanguageTypeUnknown, 0, skip_prologue, internal, hardware) .get(); breakpoint->SetCallback(DynamicLoaderMacOS::NotifyBreakpointHit, this, true); breakpoint->SetBreakpointKind("shared-library-event"); if (breakpoint->HasResolvedLocations()) m_break_id = breakpoint->GetID(); else m_process->GetTarget().RemoveBreakpointByID(breakpoint->GetID()); if (m_break_id == LLDB_INVALID_BREAK_ID) { Breakpoint *breakpoint = m_process->GetTarget() .CreateBreakpoint(&dyld_filelist, source_files, "gdb_image_notifier", eFunctionNameTypeFull, eLanguageTypeUnknown, 0, skip_prologue, internal, hardware) .get(); breakpoint->SetCallback(DynamicLoaderMacOS::NotifyBreakpointHit, this, true); breakpoint->SetBreakpointKind("shared-library-event"); if (breakpoint->HasResolvedLocations()) m_break_id = breakpoint->GetID(); else m_process->GetTarget().RemoveBreakpointByID(breakpoint->GetID()); } } } // Failing that, find dyld_all_image_infos struct in memory, // read the notification function pointer at the offset. if (m_break_id == LLDB_INVALID_BREAK_ID) { addr_t notification_addr = GetNotificationFuncAddrFromImageInfos(); if (notification_addr != LLDB_INVALID_ADDRESS) { Address so_addr; // We may not have a dyld binary mapped to this address yet; // don't try to express the Address object as section+offset, // only as a raw load address. so_addr.SetRawAddress(notification_addr); Breakpoint *dyld_break = m_process->GetTarget().CreateBreakpoint(so_addr, true, false).get(); dyld_break->SetCallback(DynamicLoaderMacOS::NotifyBreakpointHit, this, true); dyld_break->SetBreakpointKind("shared-library-event"); if (dyld_break->HasResolvedLocations()) m_break_id = dyld_break->GetID(); else m_process->GetTarget().RemoveBreakpointByID(dyld_break->GetID()); } } return m_break_id != LLDB_INVALID_BREAK_ID; } bool DynamicLoaderMacOS::SetDYLDHandoverBreakpoint( addr_t notification_address) { if (m_dyld_handover_break_id == LLDB_INVALID_BREAK_ID) { BreakpointSP dyld_handover_bp = m_process->GetTarget().CreateBreakpoint( notification_address, true, false); dyld_handover_bp->SetCallback(DynamicLoaderMacOS::NotifyBreakpointHit, this, true); dyld_handover_bp->SetOneShot(true); m_dyld_handover_break_id = dyld_handover_bp->GetID(); return true; } return false; } void DynamicLoaderMacOS::ClearDYLDHandoverBreakpoint() { if (LLDB_BREAK_ID_IS_VALID(m_dyld_handover_break_id)) m_process->GetTarget().RemoveBreakpointByID(m_dyld_handover_break_id); m_dyld_handover_break_id = LLDB_INVALID_BREAK_ID; } addr_t DynamicLoaderMacOS::GetDyldLockVariableAddressFromModule(Module *module) { SymbolContext sc; Target &target = m_process->GetTarget(); if (Symtab *symtab = module->GetSymtab()) { std::vector match_indexes; ConstString g_symbol_name("_dyld_global_lock_held"); uint32_t num_matches = 0; num_matches = symtab->AppendSymbolIndexesWithName(g_symbol_name, match_indexes); if (num_matches == 1) { Symbol *symbol = symtab->SymbolAtIndex(match_indexes[0]); if (symbol && (symbol->ValueIsAddress() || symbol->GetAddressRef().IsValid())) { return symbol->GetAddressRef().GetOpcodeLoadAddress(&target); } } } return LLDB_INVALID_ADDRESS; } // Look for this symbol: // // int __attribute__((visibility("hidden"))) _dyld_global_lock_held = // 0; // // in libdyld.dylib. Status DynamicLoaderMacOS::CanLoadImage() { Status error; addr_t symbol_address = LLDB_INVALID_ADDRESS; ConstString g_libdyld_name("libdyld.dylib"); Target &target = m_process->GetTarget(); const ModuleList &target_modules = target.GetImages(); std::lock_guard guard(target_modules.GetMutex()); // Find any modules named "libdyld.dylib" and look for the symbol there first for (ModuleSP module_sp : target.GetImages().ModulesNoLocking()) { if (module_sp) { if (module_sp->GetFileSpec().GetFilename() == g_libdyld_name) { symbol_address = GetDyldLockVariableAddressFromModule(module_sp.get()); if (symbol_address != LLDB_INVALID_ADDRESS) break; } } } // Search through all modules looking for the symbol in them if (symbol_address == LLDB_INVALID_ADDRESS) { for (ModuleSP module_sp : target.GetImages().Modules()) { if (module_sp) { addr_t symbol_address = GetDyldLockVariableAddressFromModule(module_sp.get()); if (symbol_address != LLDB_INVALID_ADDRESS) break; } } } // Default assumption is that it is OK to load images. Only say that we // cannot load images if we find the symbol in libdyld and it indicates that // we cannot. if (symbol_address != LLDB_INVALID_ADDRESS) { { int lock_held = m_process->ReadUnsignedIntegerFromMemory(symbol_address, 4, 0, error); if (lock_held != 0) { error.SetErrorString("dyld lock held - unsafe to load images."); } } } else { // If we were unable to find _dyld_global_lock_held in any modules, or it // is not loaded into memory yet, we may be at process startup (sitting at // _dyld_start) - so we should not allow dlopen calls. But if we found more // than one module then we are clearly past _dyld_start so in that case // we'll default to "it's safe". if (target.GetImages().GetSize() <= 1) error.SetErrorString("could not find the dyld library or " "the dyld lock symbol"); } return error; } bool DynamicLoaderMacOS::GetSharedCacheInformation( lldb::addr_t &base_address, UUID &uuid, LazyBool &using_shared_cache, LazyBool &private_shared_cache) { base_address = LLDB_INVALID_ADDRESS; uuid.Clear(); using_shared_cache = eLazyBoolCalculate; private_shared_cache = eLazyBoolCalculate; if (m_process) { StructuredData::ObjectSP info = m_process->GetSharedCacheInfo(); StructuredData::Dictionary *info_dict = nullptr; if (info.get() && info->GetAsDictionary()) { info_dict = info->GetAsDictionary(); } // {"shared_cache_base_address":140735683125248,"shared_cache_uuid // ":"DDB8D70C- // C9A2-3561-B2C8-BE48A4F33F96","no_shared_cache":false,"shared_cache_private_cache":false} if (info_dict && info_dict->HasKey("shared_cache_uuid") && info_dict->HasKey("no_shared_cache") && info_dict->HasKey("shared_cache_base_address")) { base_address = info_dict->GetValueForKey("shared_cache_base_address") ->GetUnsignedIntegerValue(LLDB_INVALID_ADDRESS); std::string uuid_str = std::string( info_dict->GetValueForKey("shared_cache_uuid")->GetStringValue()); if (!uuid_str.empty()) uuid.SetFromStringRef(uuid_str); if (!info_dict->GetValueForKey("no_shared_cache")->GetBooleanValue()) using_shared_cache = eLazyBoolYes; else using_shared_cache = eLazyBoolNo; if (info_dict->GetValueForKey("shared_cache_private_cache") ->GetBooleanValue()) private_shared_cache = eLazyBoolYes; else private_shared_cache = eLazyBoolNo; return true; } } return false; } void DynamicLoaderMacOS::Initialize() { PluginManager::RegisterPlugin(GetPluginNameStatic(), GetPluginDescriptionStatic(), CreateInstance); } void DynamicLoaderMacOS::Terminate() { PluginManager::UnregisterPlugin(CreateInstance); } llvm::StringRef DynamicLoaderMacOS::GetPluginDescriptionStatic() { return "Dynamic loader plug-in that watches for shared library loads/unloads " "in MacOSX user processes."; }