diff options
Diffstat (limited to 'lldb/source/Plugins/DynamicLoader/MacOSX-DYLD')
6 files changed, 2733 insertions, 3083 deletions
diff --git a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp index b880bd0faf6..0dbdff3f86a 100644 --- a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp +++ b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp @@ -35,7 +35,7 @@ //#define ENABLE_DEBUG_PRINTF // COMMENT THIS LINE OUT PRIOR TO CHECKIN #ifdef ENABLE_DEBUG_PRINTF #include <stdio.h> -#define DEBUG_PRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__) +#define DEBUG_PRINTF(fmt, ...) printf(fmt, ##__VA_ARGS__) #else #define DEBUG_PRINTF(fmt, ...) #endif @@ -49,29 +49,18 @@ using namespace lldb; using namespace lldb_private; - //---------------------------------------------------------------------- // Constructor //---------------------------------------------------------------------- -DynamicLoaderDarwin::DynamicLoaderDarwin (Process* process) - : DynamicLoader(process), - m_dyld_module_wp(), - m_libpthread_module_wp(), - m_pthread_getspecific_addr(), - m_tid_to_tls_map(), - m_dyld_image_infos(), - m_dyld_image_infos_stop_id(UINT32_MAX), - m_dyld(), - m_mutex() -{ -} +DynamicLoaderDarwin::DynamicLoaderDarwin(Process *process) + : DynamicLoader(process), m_dyld_module_wp(), m_libpthread_module_wp(), + m_pthread_getspecific_addr(), m_tid_to_tls_map(), m_dyld_image_infos(), + m_dyld_image_infos_stop_id(UINT32_MAX), m_dyld(), m_mutex() {} //---------------------------------------------------------------------- // Destructor //---------------------------------------------------------------------- -DynamicLoaderDarwin::~DynamicLoaderDarwin() -{ -} +DynamicLoaderDarwin::~DynamicLoaderDarwin() {} //------------------------------------------------------------------ /// Called after attaching a process. @@ -79,12 +68,10 @@ DynamicLoaderDarwin::~DynamicLoaderDarwin() /// Allow DynamicLoader plug-ins to execute some code after /// attaching to a process. //------------------------------------------------------------------ -void -DynamicLoaderDarwin::DidAttach () -{ - PrivateInitialize(m_process); - DoInitialImageFetch (); - SetNotificationBreakpoint (); +void DynamicLoaderDarwin::DidAttach() { + PrivateInitialize(m_process); + DoInitialImageFetch(); + SetNotificationBreakpoint(); } //------------------------------------------------------------------ @@ -93,640 +80,618 @@ DynamicLoaderDarwin::DidAttach () /// Allow DynamicLoader plug-ins to execute some code after /// attaching to a process. //------------------------------------------------------------------ -void -DynamicLoaderDarwin::DidLaunch () -{ - PrivateInitialize(m_process); - DoInitialImageFetch (); - SetNotificationBreakpoint (); +void DynamicLoaderDarwin::DidLaunch() { + PrivateInitialize(m_process); + DoInitialImageFetch(); + SetNotificationBreakpoint(); } - //---------------------------------------------------------------------- // Clear out the state of this class. //---------------------------------------------------------------------- -void -DynamicLoaderDarwin::Clear (bool clear_process) -{ - std::lock_guard<std::recursive_mutex> guard(m_mutex); - if (clear_process) - m_process = NULL; - m_dyld_image_infos.clear(); - m_dyld_image_infos_stop_id = UINT32_MAX; - m_dyld.Clear(false); +void DynamicLoaderDarwin::Clear(bool clear_process) { + std::lock_guard<std::recursive_mutex> guard(m_mutex); + if (clear_process) + m_process = NULL; + m_dyld_image_infos.clear(); + m_dyld_image_infos_stop_id = UINT32_MAX; + m_dyld.Clear(false); } -ModuleSP -DynamicLoaderDarwin::FindTargetModuleForImageInfo (ImageInfo &image_info, bool can_create, bool *did_create_ptr) -{ - if (did_create_ptr) - *did_create_ptr = false; - - Target &target = m_process->GetTarget(); - const ModuleList &target_images = target.GetImages(); - ModuleSpec module_spec (image_info.file_spec); - module_spec.GetUUID() = image_info.uuid; - ModuleSP module_sp (target_images.FindFirstModule (module_spec)); - - if (module_sp && !module_spec.GetUUID().IsValid() && !module_sp->GetUUID().IsValid()) - { - // No UUID, we must rely upon the cached module modification - // time and the modification time of the file on disk - if (module_sp->GetModificationTime() != module_sp->GetFileSpec().GetModificationTime()) - module_sp.reset(); - } - - if (!module_sp) - { - if (can_create) - { - module_sp = target.GetSharedModule (module_spec); - if (!module_sp || module_sp->GetObjectFile() == NULL) - module_sp = m_process->ReadModuleFromMemory (image_info.file_spec, image_info.address); - - if (did_create_ptr) - *did_create_ptr = (bool) module_sp; - } +ModuleSP DynamicLoaderDarwin::FindTargetModuleForImageInfo( + ImageInfo &image_info, bool can_create, bool *did_create_ptr) { + if (did_create_ptr) + *did_create_ptr = false; + + Target &target = m_process->GetTarget(); + const ModuleList &target_images = target.GetImages(); + ModuleSpec module_spec(image_info.file_spec); + module_spec.GetUUID() = image_info.uuid; + ModuleSP module_sp(target_images.FindFirstModule(module_spec)); + + if (module_sp && !module_spec.GetUUID().IsValid() && + !module_sp->GetUUID().IsValid()) { + // No UUID, we must rely upon the cached module modification + // time and the modification time of the file on disk + if (module_sp->GetModificationTime() != + module_sp->GetFileSpec().GetModificationTime()) + module_sp.reset(); + } + + if (!module_sp) { + if (can_create) { + module_sp = target.GetSharedModule(module_spec); + if (!module_sp || module_sp->GetObjectFile() == NULL) + module_sp = m_process->ReadModuleFromMemory(image_info.file_spec, + image_info.address); + + if (did_create_ptr) + *did_create_ptr = (bool)module_sp; } - return module_sp; + } + return module_sp; } -void -DynamicLoaderDarwin::UnloadImages (const std::vector<lldb::addr_t> &solib_addresses) -{ - std::lock_guard<std::recursive_mutex> guard(m_mutex); - if (m_process->GetStopID() == m_dyld_image_infos_stop_id) - return; - - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); - Target &target = m_process->GetTarget(); - if (log) - log->Printf ("Removing %" PRId64 " modules.", (uint64_t) solib_addresses.size()); - - ModuleList unloaded_module_list; - - for (addr_t solib_addr : solib_addresses) - { - Address header; - if (header.SetLoadAddress (solib_addr, &target)) - { - if (header.GetOffset() == 0) - { - ModuleSP module_to_remove (header.GetModule()); - if (module_to_remove.get()) - { - if (log) - log->Printf ("Removing module at address 0x%" PRIx64, solib_addr); - // remove the sections from the Target - UnloadSections (module_to_remove); - // add this to the list of modules to remove - unloaded_module_list.AppendIfNeeded (module_to_remove); - // remove the entry from the m_dyld_image_infos - ImageInfo::collection::iterator pos, end = m_dyld_image_infos.end(); - for (pos = m_dyld_image_infos.begin(); pos != end; pos++) - { - if (solib_addr == (*pos).address) - { - m_dyld_image_infos.erase(pos); - break; - } - } - } +void DynamicLoaderDarwin::UnloadImages( + const std::vector<lldb::addr_t> &solib_addresses) { + std::lock_guard<std::recursive_mutex> guard(m_mutex); + if (m_process->GetStopID() == m_dyld_image_infos_stop_id) + return; + + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER)); + Target &target = m_process->GetTarget(); + if (log) + log->Printf("Removing %" PRId64 " modules.", + (uint64_t)solib_addresses.size()); + + ModuleList unloaded_module_list; + + for (addr_t solib_addr : solib_addresses) { + Address header; + if (header.SetLoadAddress(solib_addr, &target)) { + if (header.GetOffset() == 0) { + ModuleSP module_to_remove(header.GetModule()); + if (module_to_remove.get()) { + if (log) + log->Printf("Removing module at address 0x%" PRIx64, solib_addr); + // remove the sections from the Target + UnloadSections(module_to_remove); + // add this to the list of modules to remove + unloaded_module_list.AppendIfNeeded(module_to_remove); + // remove the entry from the m_dyld_image_infos + ImageInfo::collection::iterator pos, end = m_dyld_image_infos.end(); + for (pos = m_dyld_image_infos.begin(); pos != end; pos++) { + if (solib_addr == (*pos).address) { + m_dyld_image_infos.erase(pos); + break; } + } } + } } + } - if (unloaded_module_list.GetSize() > 0) - { - if (log) - { - log->PutCString("Unloaded:"); - unloaded_module_list.LogUUIDAndPaths (log, "DynamicLoaderDarwin::UnloadModules"); - } - m_process->GetTarget().GetImages().Remove (unloaded_module_list); - m_dyld_image_infos_stop_id = m_process->GetStopID(); + if (unloaded_module_list.GetSize() > 0) { + if (log) { + log->PutCString("Unloaded:"); + unloaded_module_list.LogUUIDAndPaths( + log, "DynamicLoaderDarwin::UnloadModules"); } + m_process->GetTarget().GetImages().Remove(unloaded_module_list); + m_dyld_image_infos_stop_id = m_process->GetStopID(); + } } -void -DynamicLoaderDarwin::UnloadAllImages () -{ - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); - ModuleList unloaded_modules_list; +void DynamicLoaderDarwin::UnloadAllImages() { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER)); + ModuleList unloaded_modules_list; - Target &target = m_process->GetTarget(); - const ModuleList &target_modules = target.GetImages(); - std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex()); - - size_t num_modules = target_modules.GetSize(); - ModuleSP dyld_sp (GetDYLDModule()); - - for (size_t i = 0; i < num_modules; i++) - { - ModuleSP module_sp = target_modules.GetModuleAtIndexUnlocked (i); - - // Don't remove dyld - else we'll lose our breakpoint notifying us about libraries - // being re-loaded... - if (module_sp.get() != nullptr - && module_sp.get() != dyld_sp.get()) - { - UnloadSections (module_sp); - unloaded_modules_list.Append (module_sp); - } + Target &target = m_process->GetTarget(); + const ModuleList &target_modules = target.GetImages(); + std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex()); + + size_t num_modules = target_modules.GetSize(); + ModuleSP dyld_sp(GetDYLDModule()); + + for (size_t i = 0; i < num_modules; i++) { + ModuleSP module_sp = target_modules.GetModuleAtIndexUnlocked(i); + + // Don't remove dyld - else we'll lose our breakpoint notifying us about + // libraries + // being re-loaded... + if (module_sp.get() != nullptr && module_sp.get() != dyld_sp.get()) { + UnloadSections(module_sp); + unloaded_modules_list.Append(module_sp); } + } - if (unloaded_modules_list.GetSize() != 0) - { - if (log) - { - log->PutCString("Unloaded:"); - unloaded_modules_list.LogUUIDAndPaths (log, "DynamicLoaderDarwin::UnloadAllImages"); - } - target.GetImages().Remove(unloaded_modules_list); - m_dyld_image_infos.clear(); - m_dyld_image_infos_stop_id = m_process->GetStopID(); + if (unloaded_modules_list.GetSize() != 0) { + if (log) { + log->PutCString("Unloaded:"); + unloaded_modules_list.LogUUIDAndPaths( + log, "DynamicLoaderDarwin::UnloadAllImages"); } + target.GetImages().Remove(unloaded_modules_list); + m_dyld_image_infos.clear(); + m_dyld_image_infos_stop_id = m_process->GetStopID(); + } } //---------------------------------------------------------------------- // Update the load addresses for all segments in MODULE using the // updated INFO that is passed in. //---------------------------------------------------------------------- -bool -DynamicLoaderDarwin::UpdateImageLoadAddress (Module *module, ImageInfo& info) -{ - bool changed = false; - if (module) - { - ObjectFile *image_object_file = module->GetObjectFile(); - if (image_object_file) - { - SectionList *section_list = image_object_file->GetSectionList (); - if (section_list) - { - std::vector<uint32_t> inaccessible_segment_indexes; - // We now know the slide amount, so go through all sections - // and update the load addresses with the correct values. - const size_t num_segments = info.segments.size(); - for (size_t i=0; i<num_segments; ++i) - { - // Only load a segment if it has protections. Things like - // __PAGEZERO don't have any protections, and they shouldn't - // be slid - SectionSP section_sp(section_list->FindSectionByName(info.segments[i].name)); - - if (info.segments[i].maxprot == 0) - { - inaccessible_segment_indexes.push_back(i); - } - else - { - const addr_t new_section_load_addr = info.segments[i].vmaddr + info.slide; - static ConstString g_section_name_LINKEDIT ("__LINKEDIT"); - - if (section_sp) - { - // __LINKEDIT sections from files in the shared cache - // can overlap so check to see what the segment name is - // and pass "false" so we don't warn of overlapping - // "Section" objects, and "true" for all other sections. - const bool warn_multiple = section_sp->GetName() != g_section_name_LINKEDIT; - - changed = m_process->GetTarget().SetSectionLoadAddress (section_sp, new_section_load_addr, warn_multiple); - } - else - { - Host::SystemLog (Host::eSystemLogWarning, - "warning: unable to find and load segment named '%s' at 0x%" PRIx64 " in '%s' in macosx dynamic loader plug-in.\n", - info.segments[i].name.AsCString("<invalid>"), - (uint64_t)new_section_load_addr, - image_object_file->GetFileSpec().GetPath().c_str()); - } - } - } - - // If the loaded the file (it changed) and we have segments that - // are not readable or writeable, add them to the invalid memory - // region cache for the process. This will typically only be - // the __PAGEZERO segment in the main executable. We might be able - // to apply this more generally to more sections that have no - // protections in the future, but for now we are going to just - // do __PAGEZERO. - if (changed && !inaccessible_segment_indexes.empty()) - { - for (uint32_t i=0; i<inaccessible_segment_indexes.size(); ++i) - { - const uint32_t seg_idx = inaccessible_segment_indexes[i]; - SectionSP section_sp(section_list->FindSectionByName(info.segments[seg_idx].name)); - - if (section_sp) - { - static ConstString g_pagezero_section_name("__PAGEZERO"); - if (g_pagezero_section_name == section_sp->GetName()) - { - // __PAGEZERO never slides... - const lldb::addr_t vmaddr = info.segments[seg_idx].vmaddr; - const lldb::addr_t vmsize = info.segments[seg_idx].vmsize; - Process::LoadRange pagezero_range (vmaddr, vmsize); - m_process->AddInvalidMemoryRegion(pagezero_range); - } - } - } - } +bool DynamicLoaderDarwin::UpdateImageLoadAddress(Module *module, + ImageInfo &info) { + bool changed = false; + if (module) { + ObjectFile *image_object_file = module->GetObjectFile(); + if (image_object_file) { + SectionList *section_list = image_object_file->GetSectionList(); + if (section_list) { + std::vector<uint32_t> inaccessible_segment_indexes; + // We now know the slide amount, so go through all sections + // and update the load addresses with the correct values. + const size_t num_segments = info.segments.size(); + for (size_t i = 0; i < num_segments; ++i) { + // Only load a segment if it has protections. Things like + // __PAGEZERO don't have any protections, and they shouldn't + // be slid + SectionSP section_sp( + section_list->FindSectionByName(info.segments[i].name)); + + if (info.segments[i].maxprot == 0) { + inaccessible_segment_indexes.push_back(i); + } else { + const addr_t new_section_load_addr = + info.segments[i].vmaddr + info.slide; + static ConstString g_section_name_LINKEDIT("__LINKEDIT"); + + if (section_sp) { + // __LINKEDIT sections from files in the shared cache + // can overlap so check to see what the segment name is + // and pass "false" so we don't warn of overlapping + // "Section" objects, and "true" for all other sections. + const bool warn_multiple = + section_sp->GetName() != g_section_name_LINKEDIT; + + changed = m_process->GetTarget().SetSectionLoadAddress( + section_sp, new_section_load_addr, warn_multiple); + } else { + Host::SystemLog( + Host::eSystemLogWarning, + "warning: unable to find and load segment named '%s' at " + "0x%" PRIx64 " in '%s' in macosx dynamic loader plug-in.\n", + info.segments[i].name.AsCString("<invalid>"), + (uint64_t)new_section_load_addr, + image_object_file->GetFileSpec().GetPath().c_str()); } + } } + + // If the loaded the file (it changed) and we have segments that + // are not readable or writeable, add them to the invalid memory + // region cache for the process. This will typically only be + // the __PAGEZERO segment in the main executable. We might be able + // to apply this more generally to more sections that have no + // protections in the future, but for now we are going to just + // do __PAGEZERO. + if (changed && !inaccessible_segment_indexes.empty()) { + for (uint32_t i = 0; i < inaccessible_segment_indexes.size(); ++i) { + const uint32_t seg_idx = inaccessible_segment_indexes[i]; + SectionSP section_sp( + section_list->FindSectionByName(info.segments[seg_idx].name)); + + if (section_sp) { + static ConstString g_pagezero_section_name("__PAGEZERO"); + if (g_pagezero_section_name == section_sp->GetName()) { + // __PAGEZERO never slides... + const lldb::addr_t vmaddr = info.segments[seg_idx].vmaddr; + const lldb::addr_t vmsize = info.segments[seg_idx].vmsize; + Process::LoadRange pagezero_range(vmaddr, vmsize); + m_process->AddInvalidMemoryRegion(pagezero_range); + } + } + } + } + } } - // We might have an in memory image that was loaded as soon as it was created - if (info.load_stop_id == m_process->GetStopID()) - changed = true; - else if (changed) - { - // Update the stop ID when this library was updated - info.load_stop_id = m_process->GetStopID(); - } - return changed; + } + // We might have an in memory image that was loaded as soon as it was created + if (info.load_stop_id == m_process->GetStopID()) + changed = true; + else if (changed) { + // Update the stop ID when this library was updated + info.load_stop_id = m_process->GetStopID(); + } + return changed; } //---------------------------------------------------------------------- // Unload the segments in MODULE using the INFO that is passed in. //---------------------------------------------------------------------- -bool -DynamicLoaderDarwin::UnloadModuleSections (Module *module, ImageInfo& info) -{ - bool changed = false; - if (module) - { - ObjectFile *image_object_file = module->GetObjectFile(); - if (image_object_file) - { - SectionList *section_list = image_object_file->GetSectionList (); - if (section_list) - { - const size_t num_segments = info.segments.size(); - for (size_t i=0; i<num_segments; ++i) - { - SectionSP section_sp(section_list->FindSectionByName(info.segments[i].name)); - if (section_sp) - { - const addr_t old_section_load_addr = info.segments[i].vmaddr + info.slide; - if (m_process->GetTarget().SetSectionUnloaded (section_sp, old_section_load_addr)) - changed = true; - } - else - { - Host::SystemLog (Host::eSystemLogWarning, - "warning: unable to find and unload segment named '%s' in '%s' in macosx dynamic loader plug-in.\n", - info.segments[i].name.AsCString("<invalid>"), - image_object_file->GetFileSpec().GetPath().c_str()); - } - } - } +bool DynamicLoaderDarwin::UnloadModuleSections(Module *module, + ImageInfo &info) { + bool changed = false; + if (module) { + ObjectFile *image_object_file = module->GetObjectFile(); + if (image_object_file) { + SectionList *section_list = image_object_file->GetSectionList(); + if (section_list) { + const size_t num_segments = info.segments.size(); + for (size_t i = 0; i < num_segments; ++i) { + SectionSP section_sp( + section_list->FindSectionByName(info.segments[i].name)); + if (section_sp) { + const addr_t old_section_load_addr = + info.segments[i].vmaddr + info.slide; + if (m_process->GetTarget().SetSectionUnloaded( + section_sp, old_section_load_addr)) + changed = true; + } else { + Host::SystemLog(Host::eSystemLogWarning, + "warning: unable to find and unload segment named " + "'%s' in '%s' in macosx dynamic loader plug-in.\n", + info.segments[i].name.AsCString("<invalid>"), + image_object_file->GetFileSpec().GetPath().c_str()); + } } + } } - return changed; + } + return changed; } - -// Given a JSON dictionary (from debugserver, most likely) of binary images loaded in the inferior +// Given a JSON dictionary (from debugserver, most likely) of binary images +// loaded in the inferior // process, add the images to the ImageInfo collection. -bool -DynamicLoaderDarwin::JSONImageInformationIntoImageInfo (StructuredData::ObjectSP image_details, ImageInfo::collection &image_infos) -{ - StructuredData::ObjectSP images_sp = image_details->GetAsDictionary()->GetValueForKey("images"); - if (images_sp.get() == nullptr) - return false; - - image_infos.resize (images_sp->GetAsArray()->GetSize()); - - for (size_t i = 0; i < image_infos.size(); i++) - { - StructuredData::ObjectSP image_sp = images_sp->GetAsArray()->GetItemAtIndex(i); - if (image_sp.get() == nullptr || image_sp->GetAsDictionary() == nullptr) - return false; - StructuredData::Dictionary *image = image_sp->GetAsDictionary(); - if (image->HasKey("load_address") == false - || image->HasKey("pathname") == false - || image->HasKey("mod_date") == false - || image->HasKey("mach_header") == false - || image->GetValueForKey("mach_header")->GetAsDictionary() == nullptr - || image->HasKey("segments") == false - || image->GetValueForKey("segments")->GetAsArray() == nullptr - || image->HasKey("uuid") == false ) - { - return false; - } - image_infos[i].address = image->GetValueForKey("load_address")->GetAsInteger()->GetValue(); - image_infos[i].mod_date = image->GetValueForKey("mod_date")->GetAsInteger()->GetValue(); - image_infos[i].file_spec.SetFile(image->GetValueForKey("pathname")->GetAsString()->GetValue().c_str(), false); - - StructuredData::Dictionary *mh = image->GetValueForKey("mach_header")->GetAsDictionary(); - image_infos[i].header.magic = mh->GetValueForKey("magic")->GetAsInteger()->GetValue(); - image_infos[i].header.cputype = mh->GetValueForKey("cputype")->GetAsInteger()->GetValue(); - image_infos[i].header.cpusubtype = mh->GetValueForKey("cpusubtype")->GetAsInteger()->GetValue(); - image_infos[i].header.filetype = mh->GetValueForKey("filetype")->GetAsInteger()->GetValue(); - - if (image->HasKey("min_version_os_name")) - { - std::string os_name = image->GetValueForKey("min_version_os_name")->GetAsString()->GetValue(); - if (os_name == "macosx") - image_infos[i].os_type = llvm::Triple::MacOSX; - else if (os_name == "ios" || os_name == "iphoneos") - image_infos[i].os_type = llvm::Triple::IOS; - else if (os_name == "tvos") - image_infos[i].os_type = llvm::Triple::TvOS; - else if (os_name == "watchos") - image_infos[i].os_type = llvm::Triple::WatchOS; - } - if (image->HasKey("min_version_os_sdk")) - { - image_infos[i].min_version_os_sdk = image->GetValueForKey("min_version_os_sdk")->GetAsString()->GetValue(); - } +bool DynamicLoaderDarwin::JSONImageInformationIntoImageInfo( + StructuredData::ObjectSP image_details, + ImageInfo::collection &image_infos) { + StructuredData::ObjectSP images_sp = + image_details->GetAsDictionary()->GetValueForKey("images"); + if (images_sp.get() == nullptr) + return false; - // Fields that aren't used by DynamicLoaderDarwin so debugserver doesn't currently send them - // in the reply. - - if (mh->HasKey("flags")) - image_infos[i].header.flags = mh->GetValueForKey("flags")->GetAsInteger()->GetValue(); - else - image_infos[i].header.flags = 0; - - if (mh->HasKey("ncmds")) - image_infos[i].header.ncmds = mh->GetValueForKey("ncmds")->GetAsInteger()->GetValue(); - else - image_infos[i].header.ncmds = 0; - - if (mh->HasKey("sizeofcmds")) - image_infos[i].header.sizeofcmds = mh->GetValueForKey("sizeofcmds")->GetAsInteger()->GetValue(); - else - image_infos[i].header.sizeofcmds = 0; - - StructuredData::Array *segments = image->GetValueForKey("segments")->GetAsArray(); - uint32_t segcount = segments->GetSize(); - for (size_t j = 0; j < segcount; j++) - { - Segment segment; - StructuredData::Dictionary *seg = segments->GetItemAtIndex(j)->GetAsDictionary(); - segment.name = ConstString(seg->GetValueForKey("name")->GetAsString()->GetValue().c_str()); - segment.vmaddr = seg->GetValueForKey("vmaddr")->GetAsInteger()->GetValue(); - segment.vmsize = seg->GetValueForKey("vmsize")->GetAsInteger()->GetValue(); - segment.fileoff = seg->GetValueForKey("fileoff")->GetAsInteger()->GetValue(); - segment.filesize = seg->GetValueForKey("filesize")->GetAsInteger()->GetValue(); - segment.maxprot = seg->GetValueForKey("maxprot")->GetAsInteger()->GetValue(); - - // Fields that aren't used by DynamicLoaderDarwin so debugserver doesn't currently send them - // in the reply. - - if (seg->HasKey("initprot")) - segment.initprot = seg->GetValueForKey("initprot")->GetAsInteger()->GetValue(); - else - segment.initprot = 0; - - if (seg->HasKey("flags")) - segment.flags = seg->GetValueForKey("flags")->GetAsInteger()->GetValue(); - else - segment.flags = 0; - - if (seg->HasKey("nsects")) - segment.nsects = seg->GetValueForKey("nsects")->GetAsInteger()->GetValue(); - else - segment.nsects = 0; - - image_infos[i].segments.push_back (segment); - } + image_infos.resize(images_sp->GetAsArray()->GetSize()); + + for (size_t i = 0; i < image_infos.size(); i++) { + StructuredData::ObjectSP image_sp = + images_sp->GetAsArray()->GetItemAtIndex(i); + if (image_sp.get() == nullptr || image_sp->GetAsDictionary() == nullptr) + return false; + StructuredData::Dictionary *image = image_sp->GetAsDictionary(); + if (image->HasKey("load_address") == false || + image->HasKey("pathname") == false || + image->HasKey("mod_date") == false || + image->HasKey("mach_header") == false || + image->GetValueForKey("mach_header")->GetAsDictionary() == nullptr || + image->HasKey("segments") == false || + image->GetValueForKey("segments")->GetAsArray() == nullptr || + image->HasKey("uuid") == false) { + return false; + } + image_infos[i].address = + image->GetValueForKey("load_address")->GetAsInteger()->GetValue(); + image_infos[i].mod_date = + image->GetValueForKey("mod_date")->GetAsInteger()->GetValue(); + image_infos[i].file_spec.SetFile( + image->GetValueForKey("pathname")->GetAsString()->GetValue().c_str(), + false); + + StructuredData::Dictionary *mh = + image->GetValueForKey("mach_header")->GetAsDictionary(); + image_infos[i].header.magic = + mh->GetValueForKey("magic")->GetAsInteger()->GetValue(); + image_infos[i].header.cputype = + mh->GetValueForKey("cputype")->GetAsInteger()->GetValue(); + image_infos[i].header.cpusubtype = + mh->GetValueForKey("cpusubtype")->GetAsInteger()->GetValue(); + image_infos[i].header.filetype = + mh->GetValueForKey("filetype")->GetAsInteger()->GetValue(); + + if (image->HasKey("min_version_os_name")) { + std::string os_name = image->GetValueForKey("min_version_os_name") + ->GetAsString() + ->GetValue(); + if (os_name == "macosx") + image_infos[i].os_type = llvm::Triple::MacOSX; + else if (os_name == "ios" || os_name == "iphoneos") + image_infos[i].os_type = llvm::Triple::IOS; + else if (os_name == "tvos") + image_infos[i].os_type = llvm::Triple::TvOS; + else if (os_name == "watchos") + image_infos[i].os_type = llvm::Triple::WatchOS; + } + if (image->HasKey("min_version_os_sdk")) { + image_infos[i].min_version_os_sdk = + image->GetValueForKey("min_version_os_sdk") + ->GetAsString() + ->GetValue(); + } - image_infos[i].uuid.SetFromCString (image->GetValueForKey("uuid")->GetAsString()->GetValue().c_str()); - - // All sections listed in the dyld image info structure will all - // either be fixed up already, or they will all be off by a single - // slide amount that is determined by finding the first segment - // that is at file offset zero which also has bytes (a file size - // that is greater than zero) in the object file. - - // Determine the slide amount (if any) - const size_t num_sections = image_infos[i].segments.size(); - for (size_t k = 0; k < num_sections; ++k) - { - // Iterate through the object file sections to find the - // first section that starts of file offset zero and that - // has bytes in the file... - if ((image_infos[i].segments[k].fileoff == 0 && image_infos[i].segments[k].filesize > 0) - || (image_infos[i].segments[k].name == ConstString("__TEXT"))) - { - image_infos[i].slide = image_infos[i].address - image_infos[i].segments[k].vmaddr; - // We have found the slide amount, so we can exit - // this for loop. - break; - } - } + // Fields that aren't used by DynamicLoaderDarwin so debugserver doesn't + // currently send them + // in the reply. + + if (mh->HasKey("flags")) + image_infos[i].header.flags = + mh->GetValueForKey("flags")->GetAsInteger()->GetValue(); + else + image_infos[i].header.flags = 0; + + if (mh->HasKey("ncmds")) + image_infos[i].header.ncmds = + mh->GetValueForKey("ncmds")->GetAsInteger()->GetValue(); + else + image_infos[i].header.ncmds = 0; + + if (mh->HasKey("sizeofcmds")) + image_infos[i].header.sizeofcmds = + mh->GetValueForKey("sizeofcmds")->GetAsInteger()->GetValue(); + else + image_infos[i].header.sizeofcmds = 0; + + StructuredData::Array *segments = + image->GetValueForKey("segments")->GetAsArray(); + uint32_t segcount = segments->GetSize(); + for (size_t j = 0; j < segcount; j++) { + Segment segment; + StructuredData::Dictionary *seg = + segments->GetItemAtIndex(j)->GetAsDictionary(); + segment.name = ConstString( + seg->GetValueForKey("name")->GetAsString()->GetValue().c_str()); + segment.vmaddr = + seg->GetValueForKey("vmaddr")->GetAsInteger()->GetValue(); + segment.vmsize = + seg->GetValueForKey("vmsize")->GetAsInteger()->GetValue(); + segment.fileoff = + seg->GetValueForKey("fileoff")->GetAsInteger()->GetValue(); + segment.filesize = + seg->GetValueForKey("filesize")->GetAsInteger()->GetValue(); + segment.maxprot = + seg->GetValueForKey("maxprot")->GetAsInteger()->GetValue(); + + // Fields that aren't used by DynamicLoaderDarwin so debugserver doesn't + // currently send them + // in the reply. + + if (seg->HasKey("initprot")) + segment.initprot = + seg->GetValueForKey("initprot")->GetAsInteger()->GetValue(); + else + segment.initprot = 0; + + if (seg->HasKey("flags")) + segment.flags = + seg->GetValueForKey("flags")->GetAsInteger()->GetValue(); + else + segment.flags = 0; + + if (seg->HasKey("nsects")) + segment.nsects = + seg->GetValueForKey("nsects")->GetAsInteger()->GetValue(); + else + segment.nsects = 0; + + image_infos[i].segments.push_back(segment); + } + + image_infos[i].uuid.SetFromCString( + image->GetValueForKey("uuid")->GetAsString()->GetValue().c_str()); + + // All sections listed in the dyld image info structure will all + // either be fixed up already, or they will all be off by a single + // slide amount that is determined by finding the first segment + // that is at file offset zero which also has bytes (a file size + // that is greater than zero) in the object file. + + // Determine the slide amount (if any) + const size_t num_sections = image_infos[i].segments.size(); + for (size_t k = 0; k < num_sections; ++k) { + // Iterate through the object file sections to find the + // first section that starts of file offset zero and that + // has bytes in the file... + if ((image_infos[i].segments[k].fileoff == 0 && + image_infos[i].segments[k].filesize > 0) || + (image_infos[i].segments[k].name == ConstString("__TEXT"))) { + image_infos[i].slide = + image_infos[i].address - image_infos[i].segments[k].vmaddr; + // We have found the slide amount, so we can exit + // this for loop. + break; + } } + } - return true; + return true; } -void -DynamicLoaderDarwin::UpdateSpecialBinariesFromNewImageInfos (ImageInfo::collection &image_infos) -{ - uint32_t exe_idx = UINT32_MAX; - uint32_t dyld_idx = UINT32_MAX; - Target &target = m_process->GetTarget(); - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); - ConstString g_dyld_sim_filename ("dyld_sim"); - - ArchSpec target_arch = target.GetArchitecture(); - const size_t image_infos_size = image_infos.size(); - for (size_t i = 0; i < image_infos_size; i++) - { - if (image_infos[i].header.filetype == llvm::MachO::MH_DYLINKER) - { - // In a "simulator" process (an x86 process that is ios/tvos/watchos) - // we will have two dyld modules -- a "dyld" that we want to keep track of, - // and a "dyld_sim" which we don't need to keep track of here. - // If the target is an x86 system and the OS of the dyld binary is - // ios/tvos/watchos, then we are looking at dyld_sym. - - // debugserver has only recently (late 2016) started sending up the - // os type for each binary it sees -- so if we don't have an os - // type, use a filename check as our next best guess. - if (image_infos[i].os_type == llvm::Triple::OSType::UnknownOS) - { - if (image_infos[i].file_spec.GetFilename() != g_dyld_sim_filename) - { - dyld_idx = i; - } - } - else if (target_arch.GetTriple().getArch() == llvm::Triple::x86 - || target_arch.GetTriple().getArch() == llvm::Triple::x86_64) - { - if (image_infos[i].os_type != llvm::Triple::OSType::IOS - && image_infos[i].os_type != llvm::Triple::TvOS - && image_infos[i].os_type != llvm::Triple::WatchOS) - { - dyld_idx = i; - } - } +void DynamicLoaderDarwin::UpdateSpecialBinariesFromNewImageInfos( + ImageInfo::collection &image_infos) { + uint32_t exe_idx = UINT32_MAX; + uint32_t dyld_idx = UINT32_MAX; + Target &target = m_process->GetTarget(); + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER)); + ConstString g_dyld_sim_filename("dyld_sim"); + + ArchSpec target_arch = target.GetArchitecture(); + const size_t image_infos_size = image_infos.size(); + for (size_t i = 0; i < image_infos_size; i++) { + if (image_infos[i].header.filetype == llvm::MachO::MH_DYLINKER) { + // In a "simulator" process (an x86 process that is ios/tvos/watchos) + // we will have two dyld modules -- a "dyld" that we want to keep track + // of, + // and a "dyld_sim" which we don't need to keep track of here. + // If the target is an x86 system and the OS of the dyld binary is + // ios/tvos/watchos, then we are looking at dyld_sym. + + // debugserver has only recently (late 2016) started sending up the + // os type for each binary it sees -- so if we don't have an os + // type, use a filename check as our next best guess. + if (image_infos[i].os_type == llvm::Triple::OSType::UnknownOS) { + if (image_infos[i].file_spec.GetFilename() != g_dyld_sim_filename) { + dyld_idx = i; } - else if (image_infos[i].header.filetype == llvm::MachO::MH_EXECUTE) - { - exe_idx = i; + } else if (target_arch.GetTriple().getArch() == llvm::Triple::x86 || + target_arch.GetTriple().getArch() == llvm::Triple::x86_64) { + if (image_infos[i].os_type != llvm::Triple::OSType::IOS && + image_infos[i].os_type != llvm::Triple::TvOS && + image_infos[i].os_type != llvm::Triple::WatchOS) { + dyld_idx = i; } + } + } else if (image_infos[i].header.filetype == llvm::MachO::MH_EXECUTE) { + exe_idx = i; } - - if (exe_idx != UINT32_MAX) - { - const bool can_create = true; - ModuleSP exe_module_sp (FindTargetModuleForImageInfo (image_infos[exe_idx], can_create, NULL)); - if (exe_module_sp) - { - if (log) - log->Printf ("Found executable module: %s", exe_module_sp->GetFileSpec().GetPath().c_str()); - target.GetImages().AppendIfNeeded (exe_module_sp); - UpdateImageLoadAddress (exe_module_sp.get(), image_infos[exe_idx]); - if (exe_module_sp.get() != target.GetExecutableModulePointer()) - { - const bool get_dependent_images = false; - target.SetExecutableModule (exe_module_sp, get_dependent_images); - } - } + } + + if (exe_idx != UINT32_MAX) { + const bool can_create = true; + ModuleSP exe_module_sp( + FindTargetModuleForImageInfo(image_infos[exe_idx], can_create, NULL)); + if (exe_module_sp) { + if (log) + log->Printf("Found executable module: %s", + exe_module_sp->GetFileSpec().GetPath().c_str()); + target.GetImages().AppendIfNeeded(exe_module_sp); + UpdateImageLoadAddress(exe_module_sp.get(), image_infos[exe_idx]); + if (exe_module_sp.get() != target.GetExecutableModulePointer()) { + const bool get_dependent_images = false; + target.SetExecutableModule(exe_module_sp, get_dependent_images); + } } - - if (dyld_idx != UINT32_MAX) - { - const bool can_create = true; - ModuleSP dyld_sp = FindTargetModuleForImageInfo (image_infos[dyld_idx], can_create, NULL); - if (dyld_sp.get()) - { - if (log) - log->Printf ("Found dyld module: %s", dyld_sp->GetFileSpec().GetPath().c_str()); - target.GetImages().AppendIfNeeded (dyld_sp); - UpdateImageLoadAddress (dyld_sp.get(), image_infos[dyld_idx]); - SetDYLDModule (dyld_sp); - } + } + + if (dyld_idx != UINT32_MAX) { + const bool can_create = true; + ModuleSP dyld_sp = + FindTargetModuleForImageInfo(image_infos[dyld_idx], can_create, NULL); + if (dyld_sp.get()) { + if (log) + log->Printf("Found dyld module: %s", + dyld_sp->GetFileSpec().GetPath().c_str()); + target.GetImages().AppendIfNeeded(dyld_sp); + UpdateImageLoadAddress(dyld_sp.get(), image_infos[dyld_idx]); + SetDYLDModule(dyld_sp); } + } } -void -DynamicLoaderDarwin::UpdateDYLDImageInfoFromNewImageInfo (ImageInfo &image_info) -{ - if (image_info.header.filetype == llvm::MachO::MH_DYLINKER) - { - const bool can_create = true; - ModuleSP dyld_sp = FindTargetModuleForImageInfo (image_info, can_create, NULL); - if (dyld_sp.get()) - { - Target &target = m_process->GetTarget(); - target.GetImages().AppendIfNeeded (dyld_sp); - UpdateImageLoadAddress (dyld_sp.get(), image_info); - SetDYLDModule (dyld_sp); - } +void DynamicLoaderDarwin::UpdateDYLDImageInfoFromNewImageInfo( + ImageInfo &image_info) { + if (image_info.header.filetype == llvm::MachO::MH_DYLINKER) { + const bool can_create = true; + ModuleSP dyld_sp = + FindTargetModuleForImageInfo(image_info, can_create, NULL); + if (dyld_sp.get()) { + Target &target = m_process->GetTarget(); + target.GetImages().AppendIfNeeded(dyld_sp); + UpdateImageLoadAddress(dyld_sp.get(), image_info); + SetDYLDModule(dyld_sp); } + } } -void -DynamicLoaderDarwin::SetDYLDModule (lldb::ModuleSP &dyld_module_sp) -{ - m_dyld_module_wp = dyld_module_sp; +void DynamicLoaderDarwin::SetDYLDModule(lldb::ModuleSP &dyld_module_sp) { + m_dyld_module_wp = dyld_module_sp; } -ModuleSP -DynamicLoaderDarwin::GetDYLDModule () -{ - ModuleSP dyld_sp (m_dyld_module_wp.lock()); - return dyld_sp; +ModuleSP DynamicLoaderDarwin::GetDYLDModule() { + ModuleSP dyld_sp(m_dyld_module_wp.lock()); + return dyld_sp; } -bool -DynamicLoaderDarwin::AddModulesUsingImageInfos (ImageInfo::collection &image_infos) -{ - std::lock_guard<std::recursive_mutex> guard(m_mutex); - // Now add these images to the main list. - ModuleList loaded_module_list; - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); - Target &target = m_process->GetTarget(); - ModuleList& target_images = target.GetImages(); - - for (uint32_t idx = 0; idx < image_infos.size(); ++idx) - { - if (log) - { - log->Printf ("Adding new image at address=0x%16.16" PRIx64 ".", image_infos[idx].address); - image_infos[idx].PutToLog (log); - } - - m_dyld_image_infos.push_back(image_infos[idx]); - - ModuleSP image_module_sp (FindTargetModuleForImageInfo (image_infos[idx], true, NULL)); - - if (image_module_sp) - { - ObjectFile *objfile = image_module_sp->GetObjectFile (); - if (objfile) - { - SectionList *sections = objfile->GetSectionList(); - if (sections) - { - ConstString commpage_dbstr("__commpage"); - Section *commpage_section = sections->FindSectionByName(commpage_dbstr).get(); - if (commpage_section) - { - ModuleSpec module_spec (objfile->GetFileSpec(), image_infos[idx].GetArchitecture ()); - module_spec.GetObjectName() = commpage_dbstr; - ModuleSP commpage_image_module_sp(target_images.FindFirstModule (module_spec)); - if (!commpage_image_module_sp) - { - module_spec.SetObjectOffset (objfile->GetFileOffset() + commpage_section->GetFileOffset()); - module_spec.SetObjectSize (objfile->GetByteSize()); - commpage_image_module_sp = target.GetSharedModule (module_spec); - if (!commpage_image_module_sp || commpage_image_module_sp->GetObjectFile() == NULL) - { - commpage_image_module_sp = m_process->ReadModuleFromMemory (image_infos[idx].file_spec, - image_infos[idx].address); - // Always load a memory image right away in the target in case - // we end up trying to read the symbol table from memory... The - // __LINKEDIT will need to be mapped so we can figure out where - // the symbol table bits are... - bool changed = false; - UpdateImageLoadAddress (commpage_image_module_sp.get(), image_infos[idx]); - target.GetImages().Append(commpage_image_module_sp); - if (changed) - { - image_infos[idx].load_stop_id = m_process->GetStopID(); - loaded_module_list.AppendIfNeeded (commpage_image_module_sp); - } - } - } - } - } - } +bool DynamicLoaderDarwin::AddModulesUsingImageInfos( + ImageInfo::collection &image_infos) { + std::lock_guard<std::recursive_mutex> guard(m_mutex); + // Now add these images to the main list. + ModuleList loaded_module_list; + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER)); + Target &target = m_process->GetTarget(); + ModuleList &target_images = target.GetImages(); + + for (uint32_t idx = 0; idx < image_infos.size(); ++idx) { + if (log) { + log->Printf("Adding new image at address=0x%16.16" PRIx64 ".", + image_infos[idx].address); + image_infos[idx].PutToLog(log); + } - // UpdateImageLoadAddress will return true if any segments - // change load address. We need to check this so we don't - // mention that all loaded shared libraries are newly loaded - // each time we hit out dyld breakpoint since dyld will list all - // shared libraries each time. - if (UpdateImageLoadAddress (image_module_sp.get(), image_infos[idx])) - { - target_images.AppendIfNeeded(image_module_sp); - loaded_module_list.AppendIfNeeded (image_module_sp); + m_dyld_image_infos.push_back(image_infos[idx]); + + ModuleSP image_module_sp( + FindTargetModuleForImageInfo(image_infos[idx], true, NULL)); + + if (image_module_sp) { + ObjectFile *objfile = image_module_sp->GetObjectFile(); + if (objfile) { + SectionList *sections = objfile->GetSectionList(); + if (sections) { + ConstString commpage_dbstr("__commpage"); + Section *commpage_section = + sections->FindSectionByName(commpage_dbstr).get(); + if (commpage_section) { + ModuleSpec module_spec(objfile->GetFileSpec(), + image_infos[idx].GetArchitecture()); + module_spec.GetObjectName() = commpage_dbstr; + ModuleSP commpage_image_module_sp( + target_images.FindFirstModule(module_spec)); + if (!commpage_image_module_sp) { + module_spec.SetObjectOffset(objfile->GetFileOffset() + + commpage_section->GetFileOffset()); + module_spec.SetObjectSize(objfile->GetByteSize()); + commpage_image_module_sp = target.GetSharedModule(module_spec); + if (!commpage_image_module_sp || + commpage_image_module_sp->GetObjectFile() == NULL) { + commpage_image_module_sp = m_process->ReadModuleFromMemory( + image_infos[idx].file_spec, image_infos[idx].address); + // Always load a memory image right away in the target in case + // we end up trying to read the symbol table from memory... The + // __LINKEDIT will need to be mapped so we can figure out where + // the symbol table bits are... + bool changed = false; + UpdateImageLoadAddress(commpage_image_module_sp.get(), + image_infos[idx]); + target.GetImages().Append(commpage_image_module_sp); + if (changed) { + image_infos[idx].load_stop_id = m_process->GetStopID(); + loaded_module_list.AppendIfNeeded(commpage_image_module_sp); + } + } } + } } + } + + // UpdateImageLoadAddress will return true if any segments + // change load address. We need to check this so we don't + // mention that all loaded shared libraries are newly loaded + // each time we hit out dyld breakpoint since dyld will list all + // shared libraries each time. + if (UpdateImageLoadAddress(image_module_sp.get(), image_infos[idx])) { + target_images.AppendIfNeeded(image_module_sp); + loaded_module_list.AppendIfNeeded(image_module_sp); + } } - - if (loaded_module_list.GetSize() > 0) - { - if (log) - loaded_module_list.LogUUIDAndPaths (log, "DynamicLoaderDarwin::ModulesDidLoad"); - m_process->GetTarget().ModulesDidLoad (loaded_module_list); - } - return true; -} + } + if (loaded_module_list.GetSize() > 0) { + if (log) + loaded_module_list.LogUUIDAndPaths(log, + "DynamicLoaderDarwin::ModulesDidLoad"); + m_process->GetTarget().ModulesDidLoad(loaded_module_list); + } + return true; +} //---------------------------------------------------------------------- // On Mac OS X libobjc (the Objective-C runtime) has several critical dispatch // functions written in hand-written assembly, and also have hand-written unwind -// information in the eh_frame section. Normally we prefer analyzing the -// assembly instructions of a currently executing frame to unwind from that frame -- +// information in the eh_frame section. Normally we prefer analyzing the +// assembly instructions of a currently executing frame to unwind from that +// frame -- // but on hand-written functions this profiling can fail. We should use the // eh_frame instructions for these functions all the time. // @@ -736,532 +701,474 @@ DynamicLoaderDarwin::AddModulesUsingImageInfos (ImageInfo::collection &image_inf // of our normal default assumption that they are not. //---------------------------------------------------------------------- -bool -DynamicLoaderDarwin::AlwaysRelyOnEHUnwindInfo (SymbolContext &sym_ctx) -{ - ModuleSP module_sp; - if (sym_ctx.symbol) - { - module_sp = sym_ctx.symbol->GetAddressRef().GetModule(); - } - if (module_sp.get() == NULL && sym_ctx.function) - { - module_sp = sym_ctx.function->GetAddressRange().GetBaseAddress().GetModule(); - } - if (module_sp.get() == NULL) - return false; - - ObjCLanguageRuntime *objc_runtime = m_process->GetObjCLanguageRuntime(); - if (objc_runtime != NULL && objc_runtime->IsModuleObjCLibrary (module_sp)) - { - return true; - } - +bool DynamicLoaderDarwin::AlwaysRelyOnEHUnwindInfo(SymbolContext &sym_ctx) { + ModuleSP module_sp; + if (sym_ctx.symbol) { + module_sp = sym_ctx.symbol->GetAddressRef().GetModule(); + } + if (module_sp.get() == NULL && sym_ctx.function) { + module_sp = + sym_ctx.function->GetAddressRange().GetBaseAddress().GetModule(); + } + if (module_sp.get() == NULL) return false; -} + ObjCLanguageRuntime *objc_runtime = m_process->GetObjCLanguageRuntime(); + if (objc_runtime != NULL && objc_runtime->IsModuleObjCLibrary(module_sp)) { + return true; + } + return false; +} //---------------------------------------------------------------------- // Dump a Segment to the file handle provided. //---------------------------------------------------------------------- -void -DynamicLoaderDarwin::Segment::PutToLog (Log *log, lldb::addr_t slide) const -{ - if (log) - { - if (slide == 0) - log->Printf ("\t\t%16s [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ")", - name.AsCString(""), - vmaddr + slide, - vmaddr + slide + vmsize); - else - log->Printf ("\t\t%16s [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ") slide = 0x%" PRIx64, - name.AsCString(""), - vmaddr + slide, - vmaddr + slide + vmsize, - slide); - } +void DynamicLoaderDarwin::Segment::PutToLog(Log *log, + lldb::addr_t slide) const { + if (log) { + if (slide == 0) + log->Printf("\t\t%16s [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 ")", + name.AsCString(""), vmaddr + slide, vmaddr + slide + vmsize); + else + log->Printf("\t\t%16s [0x%16.16" PRIx64 " - 0x%16.16" PRIx64 + ") slide = 0x%" PRIx64, + name.AsCString(""), vmaddr + slide, vmaddr + slide + vmsize, + slide); + } } const DynamicLoaderDarwin::Segment * -DynamicLoaderDarwin::ImageInfo::FindSegment (const ConstString &name) const -{ - const size_t num_segments = segments.size(); - for (size_t i=0; i<num_segments; ++i) - { - if (segments[i].name == name) - return &segments[i]; - } - return NULL; +DynamicLoaderDarwin::ImageInfo::FindSegment(const ConstString &name) const { + const size_t num_segments = segments.size(); + for (size_t i = 0; i < num_segments; ++i) { + if (segments[i].name == name) + return &segments[i]; + } + return NULL; } - //---------------------------------------------------------------------- // Dump an image info structure to the file handle provided. //---------------------------------------------------------------------- -void -DynamicLoaderDarwin::ImageInfo::PutToLog (Log *log) const -{ - if (log == NULL) - return; - const uint8_t *u = (const uint8_t *)uuid.GetBytes(); - - if (address == LLDB_INVALID_ADDRESS) - { - if (u) - { - log->Printf("\t modtime=0x%8.8" PRIx64 " uuid=%2.2X%2.2X%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X path='%s' (UNLOADED)", - mod_date, - u[ 0], u[ 1], u[ 2], u[ 3], - u[ 4], u[ 5], u[ 6], u[ 7], - u[ 8], u[ 9], u[10], u[11], - u[12], u[13], u[14], u[15], - file_spec.GetPath().c_str()); - } - else - log->Printf("\t modtime=0x%8.8" PRIx64 " path='%s' (UNLOADED)", - mod_date, - file_spec.GetPath().c_str()); - } - else - { - if (u) - { - log->Printf("\taddress=0x%16.16" PRIx64 " modtime=0x%8.8" PRIx64 " uuid=%2.2X%2.2X%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X path='%s'", - address, - mod_date, - u[ 0], u[ 1], u[ 2], u[ 3], - u[ 4], u[ 5], u[ 6], u[ 7], - u[ 8], u[ 9], u[10], u[11], - u[12], u[13], u[14], u[15], - file_spec.GetPath().c_str()); - } - else - { - log->Printf("\taddress=0x%16.16" PRIx64 " modtime=0x%8.8" PRIx64 " path='%s'", - address, - mod_date, - file_spec.GetPath().c_str()); - - } - for (uint32_t i=0; i<segments.size(); ++i) - segments[i].PutToLog(log, slide); +void DynamicLoaderDarwin::ImageInfo::PutToLog(Log *log) const { + if (log == NULL) + return; + const uint8_t *u = (const uint8_t *)uuid.GetBytes(); + + if (address == LLDB_INVALID_ADDRESS) { + if (u) { + log->Printf("\t modtime=0x%8.8" PRIx64 + " uuid=%2.2X%2.2X%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-" + "%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X path='%s' (UNLOADED)", + mod_date, u[0], u[1], u[2], u[3], u[4], u[5], u[6], u[7], + u[8], u[9], u[10], u[11], u[12], u[13], u[14], u[15], + file_spec.GetPath().c_str()); + } else + log->Printf("\t modtime=0x%8.8" PRIx64 + " path='%s' (UNLOADED)", + mod_date, file_spec.GetPath().c_str()); + } else { + if (u) { + log->Printf("\taddress=0x%16.16" PRIx64 " modtime=0x%8.8" PRIx64 + " uuid=%2.2X%2.2X%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-%2.2X%2.2X-" + "%2.2X%2.2X%2.2X%2.2X%2.2X%2.2X path='%s'", + address, mod_date, u[0], u[1], u[2], u[3], u[4], u[5], u[6], + u[7], u[8], u[9], u[10], u[11], u[12], u[13], u[14], u[15], + file_spec.GetPath().c_str()); + } else { + log->Printf("\taddress=0x%16.16" PRIx64 " modtime=0x%8.8" PRIx64 + " path='%s'", + address, mod_date, file_spec.GetPath().c_str()); } + for (uint32_t i = 0; i < segments.size(); ++i) + segments[i].PutToLog(log, slide); + } } -void -DynamicLoaderDarwin::PrivateInitialize(Process *process) -{ - DEBUG_PRINTF("DynamicLoaderDarwin::%s() process state = %s\n", __FUNCTION__, StateAsCString(m_process->GetState())); - Clear(true); - m_process = process; - m_process->GetTarget().ClearAllLoadedSections(); +void DynamicLoaderDarwin::PrivateInitialize(Process *process) { + DEBUG_PRINTF("DynamicLoaderDarwin::%s() process state = %s\n", __FUNCTION__, + StateAsCString(m_process->GetState())); + Clear(true); + m_process = process; + m_process->GetTarget().ClearAllLoadedSections(); } //---------------------------------------------------------------------- // Member function that gets called when the process state changes. //---------------------------------------------------------------------- -void -DynamicLoaderDarwin::PrivateProcessStateChanged (Process *process, StateType state) -{ - DEBUG_PRINTF("DynamicLoaderDarwin::%s(%s)\n", __FUNCTION__, StateAsCString(state)); - switch (state) - { - case eStateConnected: - case eStateAttaching: - case eStateLaunching: - case eStateInvalid: - case eStateUnloaded: - case eStateExited: - case eStateDetached: - Clear(false); - break; - - case eStateStopped: - // Keep trying find dyld and set our notification breakpoint each time - // we stop until we succeed - if (!DidSetNotificationBreakpoint () && m_process->IsAlive()) - { - if (NeedToDoInitialImageFetch ()) - DoInitialImageFetch (); - - SetNotificationBreakpoint (); - } - break; - - case eStateRunning: - case eStateStepping: - case eStateCrashed: - case eStateSuspended: - break; +void DynamicLoaderDarwin::PrivateProcessStateChanged(Process *process, + StateType state) { + DEBUG_PRINTF("DynamicLoaderDarwin::%s(%s)\n", __FUNCTION__, + StateAsCString(state)); + switch (state) { + case eStateConnected: + case eStateAttaching: + case eStateLaunching: + case eStateInvalid: + case eStateUnloaded: + case eStateExited: + case eStateDetached: + Clear(false); + break; + + case eStateStopped: + // Keep trying find dyld and set our notification breakpoint each time + // we stop until we succeed + if (!DidSetNotificationBreakpoint() && m_process->IsAlive()) { + if (NeedToDoInitialImageFetch()) + DoInitialImageFetch(); + + SetNotificationBreakpoint(); } + break; + + case eStateRunning: + case eStateStepping: + case eStateCrashed: + case eStateSuspended: + break; + } } ThreadPlanSP -DynamicLoaderDarwin::GetStepThroughTrampolinePlan (Thread &thread, bool stop_others) -{ - ThreadPlanSP thread_plan_sp; - StackFrame *current_frame = thread.GetStackFrameAtIndex(0).get(); - const SymbolContext ¤t_context = current_frame->GetSymbolContext(eSymbolContextSymbol); - Symbol *current_symbol = current_context.symbol; - Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); - TargetSP target_sp (thread.CalculateTarget()); - - if (current_symbol != NULL) - { - std::vector<Address> addresses; - - if (current_symbol->IsTrampoline()) - { - const ConstString &trampoline_name = current_symbol->GetMangled().GetName(current_symbol->GetLanguage(), Mangled::ePreferMangled); - - if (trampoline_name) - { - const ModuleList &images = target_sp->GetImages(); - - SymbolContextList code_symbols; - images.FindSymbolsWithNameAndType(trampoline_name, eSymbolTypeCode, code_symbols); - size_t num_code_symbols = code_symbols.GetSize(); - - if (num_code_symbols > 0) - { - for (uint32_t i = 0; i < num_code_symbols; i++) - { - SymbolContext context; - AddressRange addr_range; - if (code_symbols.GetContextAtIndex(i, context)) - { - context.GetAddressRange (eSymbolContextEverything, 0, false, addr_range); - addresses.push_back(addr_range.GetBaseAddress()); - if (log) - { - addr_t load_addr = addr_range.GetBaseAddress().GetLoadAddress(target_sp.get()); - - log->Printf ("Found a trampoline target symbol at 0x%" PRIx64 ".", load_addr); - } - } - } - } - - SymbolContextList reexported_symbols; - images.FindSymbolsWithNameAndType(trampoline_name, eSymbolTypeReExported, reexported_symbols); - size_t num_reexported_symbols = reexported_symbols.GetSize(); - if (num_reexported_symbols > 0) - { - for (uint32_t i = 0; i < num_reexported_symbols; i++) - { - SymbolContext context; - if (reexported_symbols.GetContextAtIndex(i, context)) - { - if (context.symbol) - { - Symbol *actual_symbol = context.symbol->ResolveReExportedSymbol(*target_sp.get()); - if (actual_symbol) - { - const Address actual_symbol_addr = actual_symbol->GetAddress(); - if (actual_symbol_addr.IsValid()) - { - addresses.push_back(actual_symbol_addr); - if (log) - { - lldb::addr_t load_addr = actual_symbol_addr.GetLoadAddress(target_sp.get()); - log->Printf ("Found a re-exported symbol: %s at 0x%" PRIx64 ".", - actual_symbol->GetName().GetCString(), load_addr); - } - } - } - } - } - } - } - - SymbolContextList indirect_symbols; - images.FindSymbolsWithNameAndType(trampoline_name, eSymbolTypeResolver, indirect_symbols); - size_t num_indirect_symbols = indirect_symbols.GetSize(); - if (num_indirect_symbols > 0) - { - for (uint32_t i = 0; i < num_indirect_symbols; i++) - { - SymbolContext context; - AddressRange addr_range; - if (indirect_symbols.GetContextAtIndex(i, context)) - { - context.GetAddressRange (eSymbolContextEverything, 0, false, addr_range); - addresses.push_back(addr_range.GetBaseAddress()); - if (log) - { - addr_t load_addr = addr_range.GetBaseAddress().GetLoadAddress(target_sp.get()); - - log->Printf ("Found an indirect target symbol at 0x%" PRIx64 ".", load_addr); - } - } - } - } +DynamicLoaderDarwin::GetStepThroughTrampolinePlan(Thread &thread, + bool stop_others) { + ThreadPlanSP thread_plan_sp; + StackFrame *current_frame = thread.GetStackFrameAtIndex(0).get(); + const SymbolContext ¤t_context = + current_frame->GetSymbolContext(eSymbolContextSymbol); + Symbol *current_symbol = current_context.symbol; + Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_STEP)); + TargetSP target_sp(thread.CalculateTarget()); + + if (current_symbol != NULL) { + std::vector<Address> addresses; + + if (current_symbol->IsTrampoline()) { + const ConstString &trampoline_name = current_symbol->GetMangled().GetName( + current_symbol->GetLanguage(), Mangled::ePreferMangled); + + if (trampoline_name) { + const ModuleList &images = target_sp->GetImages(); + + SymbolContextList code_symbols; + images.FindSymbolsWithNameAndType(trampoline_name, eSymbolTypeCode, + code_symbols); + size_t num_code_symbols = code_symbols.GetSize(); + + if (num_code_symbols > 0) { + for (uint32_t i = 0; i < num_code_symbols; i++) { + SymbolContext context; + AddressRange addr_range; + if (code_symbols.GetContextAtIndex(i, context)) { + context.GetAddressRange(eSymbolContextEverything, 0, false, + addr_range); + addresses.push_back(addr_range.GetBaseAddress()); + if (log) { + addr_t load_addr = + addr_range.GetBaseAddress().GetLoadAddress(target_sp.get()); + + log->Printf("Found a trampoline target symbol at 0x%" PRIx64 + ".", + load_addr); + } } + } } - else if (current_symbol->GetType() == eSymbolTypeReExported) - { - // I am not sure we could ever end up stopped AT a re-exported symbol. But just in case: - - const Symbol *actual_symbol = current_symbol->ResolveReExportedSymbol(*(target_sp.get())); - if (actual_symbol) - { - Address target_addr(actual_symbol->GetAddress()); - if (target_addr.IsValid()) - { - if (log) - log->Printf ("Found a re-exported symbol: %s pointing to: %s at 0x%" PRIx64 ".", - current_symbol->GetName().GetCString(), - actual_symbol->GetName().GetCString(), - target_addr.GetLoadAddress(target_sp.get())); - addresses.push_back (target_addr.GetLoadAddress(target_sp.get())); - + + SymbolContextList reexported_symbols; + images.FindSymbolsWithNameAndType( + trampoline_name, eSymbolTypeReExported, reexported_symbols); + size_t num_reexported_symbols = reexported_symbols.GetSize(); + if (num_reexported_symbols > 0) { + for (uint32_t i = 0; i < num_reexported_symbols; i++) { + SymbolContext context; + if (reexported_symbols.GetContextAtIndex(i, context)) { + if (context.symbol) { + Symbol *actual_symbol = + context.symbol->ResolveReExportedSymbol(*target_sp.get()); + if (actual_symbol) { + const Address actual_symbol_addr = + actual_symbol->GetAddress(); + if (actual_symbol_addr.IsValid()) { + addresses.push_back(actual_symbol_addr); + if (log) { + lldb::addr_t load_addr = + actual_symbol_addr.GetLoadAddress(target_sp.get()); + log->Printf( + "Found a re-exported symbol: %s at 0x%" PRIx64 ".", + actual_symbol->GetName().GetCString(), load_addr); + } + } } + } } + } } - - if (addresses.size() > 0) - { - // First check whether any of the addresses point to Indirect symbols, and if they do, resolve them: - std::vector<lldb::addr_t> load_addrs; - for (Address address : addresses) - { - Symbol *symbol = address.CalculateSymbolContextSymbol(); - if (symbol && symbol->IsIndirect()) - { - Error error; - Address symbol_address = symbol->GetAddress(); - addr_t resolved_addr = thread.GetProcess()->ResolveIndirectFunction(&symbol_address, error); - if (error.Success()) - { - load_addrs.push_back(resolved_addr); - if (log) - log->Printf("ResolveIndirectFunction found resolved target for %s at 0x%" PRIx64 ".", - symbol->GetName().GetCString(), resolved_addr); - } - } - else - { - load_addrs.push_back(address.GetLoadAddress(target_sp.get())); - } - + + SymbolContextList indirect_symbols; + images.FindSymbolsWithNameAndType(trampoline_name, eSymbolTypeResolver, + indirect_symbols); + size_t num_indirect_symbols = indirect_symbols.GetSize(); + if (num_indirect_symbols > 0) { + for (uint32_t i = 0; i < num_indirect_symbols; i++) { + SymbolContext context; + AddressRange addr_range; + if (indirect_symbols.GetContextAtIndex(i, context)) { + context.GetAddressRange(eSymbolContextEverything, 0, false, + addr_range); + addresses.push_back(addr_range.GetBaseAddress()); + if (log) { + addr_t load_addr = + addr_range.GetBaseAddress().GetLoadAddress(target_sp.get()); + + log->Printf("Found an indirect target symbol at 0x%" PRIx64 ".", + load_addr); + } } - thread_plan_sp.reset (new ThreadPlanRunToAddress (thread, load_addrs, stop_others)); + } + } + } + } else if (current_symbol->GetType() == eSymbolTypeReExported) { + // I am not sure we could ever end up stopped AT a re-exported symbol. + // But just in case: + + const Symbol *actual_symbol = + current_symbol->ResolveReExportedSymbol(*(target_sp.get())); + if (actual_symbol) { + Address target_addr(actual_symbol->GetAddress()); + if (target_addr.IsValid()) { + if (log) + log->Printf( + "Found a re-exported symbol: %s pointing to: %s at 0x%" PRIx64 + ".", + current_symbol->GetName().GetCString(), + actual_symbol->GetName().GetCString(), + target_addr.GetLoadAddress(target_sp.get())); + addresses.push_back(target_addr.GetLoadAddress(target_sp.get())); } + } } - else - { - if (log) - log->Printf ("Could not find symbol for step through."); + + if (addresses.size() > 0) { + // First check whether any of the addresses point to Indirect symbols, and + // if they do, resolve them: + std::vector<lldb::addr_t> load_addrs; + for (Address address : addresses) { + Symbol *symbol = address.CalculateSymbolContextSymbol(); + if (symbol && symbol->IsIndirect()) { + Error error; + Address symbol_address = symbol->GetAddress(); + addr_t resolved_addr = thread.GetProcess()->ResolveIndirectFunction( + &symbol_address, error); + if (error.Success()) { + load_addrs.push_back(resolved_addr); + if (log) + log->Printf("ResolveIndirectFunction found resolved target for " + "%s at 0x%" PRIx64 ".", + symbol->GetName().GetCString(), resolved_addr); + } + } else { + load_addrs.push_back(address.GetLoadAddress(target_sp.get())); + } + } + thread_plan_sp.reset( + new ThreadPlanRunToAddress(thread, load_addrs, stop_others)); } + } else { + if (log) + log->Printf("Could not find symbol for step through."); + } - return thread_plan_sp; + return thread_plan_sp; } -size_t -DynamicLoaderDarwin::FindEquivalentSymbols (lldb_private::Symbol *original_symbol, - lldb_private::ModuleList &images, - lldb_private::SymbolContextList &equivalent_symbols) -{ - const ConstString &trampoline_name = original_symbol->GetMangled().GetName(original_symbol->GetLanguage(), Mangled::ePreferMangled); - if (!trampoline_name) - return 0; - - size_t initial_size = equivalent_symbols.GetSize(); - - static const char *resolver_name_regex = "(_gc|_non_gc|\\$[A-Za-z0-9\\$]+)$"; - std::string equivalent_regex_buf("^"); - equivalent_regex_buf.append (trampoline_name.GetCString()); - equivalent_regex_buf.append (resolver_name_regex); - - RegularExpression equivalent_name_regex (equivalent_regex_buf.c_str()); - const bool append = true; - images.FindSymbolsMatchingRegExAndType (equivalent_name_regex, eSymbolTypeCode, equivalent_symbols, append); - - return equivalent_symbols.GetSize() - initial_size; +size_t DynamicLoaderDarwin::FindEquivalentSymbols( + lldb_private::Symbol *original_symbol, lldb_private::ModuleList &images, + lldb_private::SymbolContextList &equivalent_symbols) { + const ConstString &trampoline_name = original_symbol->GetMangled().GetName( + original_symbol->GetLanguage(), Mangled::ePreferMangled); + if (!trampoline_name) + return 0; + + size_t initial_size = equivalent_symbols.GetSize(); + + static const char *resolver_name_regex = "(_gc|_non_gc|\\$[A-Za-z0-9\\$]+)$"; + std::string equivalent_regex_buf("^"); + equivalent_regex_buf.append(trampoline_name.GetCString()); + equivalent_regex_buf.append(resolver_name_regex); + + RegularExpression equivalent_name_regex(equivalent_regex_buf.c_str()); + const bool append = true; + images.FindSymbolsMatchingRegExAndType(equivalent_name_regex, eSymbolTypeCode, + equivalent_symbols, append); + + return equivalent_symbols.GetSize() - initial_size; } -lldb::ModuleSP -DynamicLoaderDarwin::GetPThreadLibraryModule() -{ - ModuleSP module_sp = m_libpthread_module_wp.lock(); - if (!module_sp) - { - SymbolContextList sc_list; - ModuleSpec module_spec; - module_spec.GetFileSpec().GetFilename().SetCString("libsystem_pthread.dylib"); - ModuleList module_list; - if (m_process->GetTarget().GetImages().FindModules(module_spec, module_list)) - { - if (module_list.GetSize() == 1) - { - module_sp = module_list.GetModuleAtIndex(0); - if (module_sp) - m_libpthread_module_wp = module_sp; - } - } +lldb::ModuleSP DynamicLoaderDarwin::GetPThreadLibraryModule() { + ModuleSP module_sp = m_libpthread_module_wp.lock(); + if (!module_sp) { + SymbolContextList sc_list; + ModuleSpec module_spec; + module_spec.GetFileSpec().GetFilename().SetCString( + "libsystem_pthread.dylib"); + ModuleList module_list; + if (m_process->GetTarget().GetImages().FindModules(module_spec, + module_list)) { + if (module_list.GetSize() == 1) { + module_sp = module_list.GetModuleAtIndex(0); + if (module_sp) + m_libpthread_module_wp = module_sp; + } } - return module_sp; + } + return module_sp; } -Address -DynamicLoaderDarwin::GetPthreadSetSpecificAddress() -{ - if (!m_pthread_getspecific_addr.IsValid()) - { - ModuleSP module_sp = GetPThreadLibraryModule(); - if (module_sp) - { - lldb_private::SymbolContextList sc_list; - module_sp->FindSymbolsWithNameAndType(ConstString("pthread_getspecific"), eSymbolTypeCode, sc_list); - SymbolContext sc; - if (sc_list.GetContextAtIndex(0, sc)) - { - if (sc.symbol) - m_pthread_getspecific_addr = sc.symbol->GetAddress(); - } - } +Address DynamicLoaderDarwin::GetPthreadSetSpecificAddress() { + if (!m_pthread_getspecific_addr.IsValid()) { + ModuleSP module_sp = GetPThreadLibraryModule(); + if (module_sp) { + lldb_private::SymbolContextList sc_list; + module_sp->FindSymbolsWithNameAndType(ConstString("pthread_getspecific"), + eSymbolTypeCode, sc_list); + SymbolContext sc; + if (sc_list.GetContextAtIndex(0, sc)) { + if (sc.symbol) + m_pthread_getspecific_addr = sc.symbol->GetAddress(); + } } - return m_pthread_getspecific_addr; + } + return m_pthread_getspecific_addr; } lldb::addr_t -DynamicLoaderDarwin::GetThreadLocalData(const lldb::ModuleSP module_sp, const lldb::ThreadSP thread_sp, - lldb::addr_t tls_file_addr) -{ - if (!thread_sp || !module_sp) - return LLDB_INVALID_ADDRESS; - - std::lock_guard<std::recursive_mutex> guard(m_mutex); - - const uint32_t addr_size = m_process->GetAddressByteSize(); - uint8_t buf[sizeof(lldb::addr_t) * 3]; - - lldb_private::Address tls_addr; - if (module_sp->ResolveFileAddress(tls_file_addr, tls_addr)) - { - Error error; - const size_t tsl_data_size = addr_size * 3; - Target &target = m_process->GetTarget(); - if (target.ReadMemory(tls_addr, false, buf, tsl_data_size, error) == tsl_data_size) - { - const ByteOrder byte_order = m_process->GetByteOrder(); - DataExtractor data(buf, sizeof(buf), byte_order, addr_size); - lldb::offset_t offset = addr_size; // Skip the first pointer - const lldb::addr_t pthread_key = data.GetAddress(&offset); - const lldb::addr_t tls_offset = data.GetAddress(&offset); - if (pthread_key != 0) - { - // First check to see if we have already figured out the location - // of TLS data for the pthread_key on a specific thread yet. If we - // have we can re-use it since its location will not change unless - // the process execs. - const tid_t tid = thread_sp->GetID(); - auto tid_pos = m_tid_to_tls_map.find(tid); - if (tid_pos != m_tid_to_tls_map.end()) - { - auto tls_pos = tid_pos->second.find(pthread_key); - if (tls_pos != tid_pos->second.end()) - { - return tls_pos->second + tls_offset; - } - } - StackFrameSP frame_sp = thread_sp->GetStackFrameAtIndex(0); - if (frame_sp) - { - ClangASTContext *clang_ast_context = target.GetScratchClangASTContext(); - - if (!clang_ast_context) - return LLDB_INVALID_ADDRESS; - - CompilerType clang_void_ptr_type = clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType(); - Address pthread_getspecific_addr = GetPthreadSetSpecificAddress(); - if (pthread_getspecific_addr.IsValid()) - { - EvaluateExpressionOptions options; - - lldb::ThreadPlanSP thread_plan_sp( - new ThreadPlanCallFunction(*thread_sp, pthread_getspecific_addr, clang_void_ptr_type, - llvm::ArrayRef<lldb::addr_t>(pthread_key), options)); - - DiagnosticManager execution_errors; - ExecutionContext exe_ctx(thread_sp); - lldb::ExpressionResults results = - m_process->RunThreadPlan(exe_ctx, thread_plan_sp, options, execution_errors); - - if (results == lldb::eExpressionCompleted) - { - lldb::ValueObjectSP result_valobj_sp = thread_plan_sp->GetReturnValueObject(); - if (result_valobj_sp) - { - const lldb::addr_t pthread_key_data = result_valobj_sp->GetValueAsUnsigned(0); - if (pthread_key_data) - { - m_tid_to_tls_map[tid].insert(std::make_pair(pthread_key, pthread_key_data)); - return pthread_key_data + tls_offset; - } - } - } - } +DynamicLoaderDarwin::GetThreadLocalData(const lldb::ModuleSP module_sp, + const lldb::ThreadSP thread_sp, + lldb::addr_t tls_file_addr) { + if (!thread_sp || !module_sp) + return LLDB_INVALID_ADDRESS; + + std::lock_guard<std::recursive_mutex> guard(m_mutex); + + const uint32_t addr_size = m_process->GetAddressByteSize(); + uint8_t buf[sizeof(lldb::addr_t) * 3]; + + lldb_private::Address tls_addr; + if (module_sp->ResolveFileAddress(tls_file_addr, tls_addr)) { + Error error; + const size_t tsl_data_size = addr_size * 3; + Target &target = m_process->GetTarget(); + if (target.ReadMemory(tls_addr, false, buf, tsl_data_size, error) == + tsl_data_size) { + const ByteOrder byte_order = m_process->GetByteOrder(); + DataExtractor data(buf, sizeof(buf), byte_order, addr_size); + lldb::offset_t offset = addr_size; // Skip the first pointer + const lldb::addr_t pthread_key = data.GetAddress(&offset); + const lldb::addr_t tls_offset = data.GetAddress(&offset); + if (pthread_key != 0) { + // First check to see if we have already figured out the location + // of TLS data for the pthread_key on a specific thread yet. If we + // have we can re-use it since its location will not change unless + // the process execs. + const tid_t tid = thread_sp->GetID(); + auto tid_pos = m_tid_to_tls_map.find(tid); + if (tid_pos != m_tid_to_tls_map.end()) { + auto tls_pos = tid_pos->second.find(pthread_key); + if (tls_pos != tid_pos->second.end()) { + return tls_pos->second + tls_offset; + } + } + StackFrameSP frame_sp = thread_sp->GetStackFrameAtIndex(0); + if (frame_sp) { + ClangASTContext *clang_ast_context = + target.GetScratchClangASTContext(); + + if (!clang_ast_context) + return LLDB_INVALID_ADDRESS; + + CompilerType clang_void_ptr_type = + clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType(); + Address pthread_getspecific_addr = GetPthreadSetSpecificAddress(); + if (pthread_getspecific_addr.IsValid()) { + EvaluateExpressionOptions options; + + lldb::ThreadPlanSP thread_plan_sp(new ThreadPlanCallFunction( + *thread_sp, pthread_getspecific_addr, clang_void_ptr_type, + llvm::ArrayRef<lldb::addr_t>(pthread_key), options)); + + DiagnosticManager execution_errors; + ExecutionContext exe_ctx(thread_sp); + lldb::ExpressionResults results = m_process->RunThreadPlan( + exe_ctx, thread_plan_sp, options, execution_errors); + + if (results == lldb::eExpressionCompleted) { + lldb::ValueObjectSP result_valobj_sp = + thread_plan_sp->GetReturnValueObject(); + if (result_valobj_sp) { + const lldb::addr_t pthread_key_data = + result_valobj_sp->GetValueAsUnsigned(0); + if (pthread_key_data) { + m_tid_to_tls_map[tid].insert( + std::make_pair(pthread_key, pthread_key_data)); + return pthread_key_data + tls_offset; } + } } + } } + } } - return LLDB_INVALID_ADDRESS; + } + return LLDB_INVALID_ADDRESS; } -bool -DynamicLoaderDarwin::UseDYLDSPI (Process *process) -{ - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); - uint32_t major, minor, update; +bool DynamicLoaderDarwin::UseDYLDSPI(Process *process) { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER)); + uint32_t major, minor, update; - bool use_new_spi_interface = false; + bool use_new_spi_interface = false; - if (process->GetHostOSVersion (major, minor, update)) - { - const llvm::Triple::OSType os_type = process->GetTarget().GetArchitecture().GetTriple().getOS(); + if (process->GetHostOSVersion(major, minor, update)) { + const llvm::Triple::OSType os_type = + process->GetTarget().GetArchitecture().GetTriple().getOS(); - // macOS 10.12 and newer - if (os_type == llvm::Triple::MacOSX - && (major >= 10 || (major == 10 && minor >= 12))) - { - use_new_spi_interface = true; - } - - // iOS 10 and newer - if (os_type == llvm::Triple::IOS && major >= 10) - { - use_new_spi_interface = true; - } - - // tvOS 10 and newer - if (os_type == llvm::Triple::TvOS && major >= 10) - { - use_new_spi_interface = true; - } + // macOS 10.12 and newer + if (os_type == llvm::Triple::MacOSX && + (major >= 10 || (major == 10 && minor >= 12))) { + use_new_spi_interface = true; + } - // watchOS 3 and newer - if (os_type == llvm::Triple::WatchOS && major >= 3) - { - use_new_spi_interface = true; - } + // iOS 10 and newer + if (os_type == llvm::Triple::IOS && major >= 10) { + use_new_spi_interface = true; } + // tvOS 10 and newer + if (os_type == llvm::Triple::TvOS && major >= 10) { + use_new_spi_interface = true; + } - // FIXME: Temporarily force the use of the old DynamicLoader plugin until all - // the different use cases have been tested & the updated SPIs are available - // everywhere. - use_new_spi_interface = false; + // watchOS 3 and newer + if (os_type == llvm::Triple::WatchOS && major >= 3) { + use_new_spi_interface = true; + } + } - if (log) - { - if (use_new_spi_interface) - log->Printf ("DynamicLoaderDarwin::UseDYLDSPI: Use new DynamicLoader plugin"); - else - log->Printf ("DynamicLoaderDarwin::UseDYLDSPI: Use old DynamicLoader plugin"); + // FIXME: Temporarily force the use of the old DynamicLoader plugin until all + // the different use cases have been tested & the updated SPIs are available + // everywhere. + use_new_spi_interface = false; - } - return use_new_spi_interface; + if (log) { + if (use_new_spi_interface) + log->Printf( + "DynamicLoaderDarwin::UseDYLDSPI: Use new DynamicLoader plugin"); + else + log->Printf( + "DynamicLoaderDarwin::UseDYLDSPI: Use old DynamicLoader plugin"); + } + return use_new_spi_interface; } diff --git a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.h b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.h index 18195044be8..2daa58de0cf 100644 --- a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.h +++ b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.h @@ -18,10 +18,10 @@ // Other libraries and framework includes // Project includes -#include "lldb/Target/DynamicLoader.h" -#include "lldb/Host/FileSpec.h" #include "lldb/Core/StructuredData.h" #include "lldb/Core/UUID.h" +#include "lldb/Host/FileSpec.h" +#include "lldb/Target/DynamicLoader.h" #include "lldb/Target/Process.h" #include "lldb/Utility/SafeMachO.h" @@ -29,277 +29,215 @@ namespace lldb_private { -class DynamicLoaderDarwin : public lldb_private::DynamicLoader -{ +class DynamicLoaderDarwin : public lldb_private::DynamicLoader { public: - DynamicLoaderDarwin(lldb_private::Process *process); + DynamicLoaderDarwin(lldb_private::Process *process); + + virtual ~DynamicLoaderDarwin() override; - virtual ~DynamicLoaderDarwin() override; + //------------------------------------------------------------------ + /// Called after attaching a process. + /// + /// Allow DynamicLoader plug-ins to execute some code after + /// attaching to a process. + //------------------------------------------------------------------ + void DidAttach() override; - //------------------------------------------------------------------ - /// Called after attaching a process. - /// - /// Allow DynamicLoader plug-ins to execute some code after - /// attaching to a process. - //------------------------------------------------------------------ - void - DidAttach() override; + void DidLaunch() override; - void - DidLaunch() override; + lldb::ThreadPlanSP GetStepThroughTrampolinePlan(lldb_private::Thread &thread, + bool stop_others) override; - lldb::ThreadPlanSP - GetStepThroughTrampolinePlan(lldb_private::Thread &thread, - bool stop_others) override; + size_t FindEquivalentSymbols( + lldb_private::Symbol *original_symbol, + lldb_private::ModuleList &module_list, + lldb_private::SymbolContextList &equivalent_symbols) override; - size_t - FindEquivalentSymbols(lldb_private::Symbol *original_symbol, - lldb_private::ModuleList &module_list, - lldb_private::SymbolContextList &equivalent_symbols) override; - - lldb::addr_t - GetThreadLocalData(const lldb::ModuleSP module, const lldb::ThreadSP thread, lldb::addr_t tls_file_addr) override; + lldb::addr_t GetThreadLocalData(const lldb::ModuleSP module, + const lldb::ThreadSP thread, + lldb::addr_t tls_file_addr) override; - bool - AlwaysRelyOnEHUnwindInfo(lldb_private::SymbolContext &sym_ctx) override; + bool AlwaysRelyOnEHUnwindInfo(lldb_private::SymbolContext &sym_ctx) override; - virtual void - DoInitialImageFetch () = 0; + virtual void DoInitialImageFetch() = 0; - virtual bool - NeedToDoInitialImageFetch () = 0; + virtual bool NeedToDoInitialImageFetch() = 0; protected: - void - PrivateInitialize (lldb_private::Process *process); - - void - PrivateProcessStateChanged (lldb_private::Process *process, - lldb::StateType state); - - void - Clear (bool clear_process); - - // Clear method for classes derived from this one - virtual void - DoClear () = 0; - - void - SetDYLDModule (lldb::ModuleSP &dyld_module_sp); - - lldb::ModuleSP - GetDYLDModule (); - - class Segment - { - public: - Segment() : - name(), - vmaddr(LLDB_INVALID_ADDRESS), - vmsize(0), - fileoff(0), - filesize(0), - maxprot(0), - initprot(0), - nsects(0), - flags(0) - { - } - - lldb_private::ConstString name; - lldb::addr_t vmaddr; - lldb::addr_t vmsize; - lldb::addr_t fileoff; - lldb::addr_t filesize; - uint32_t maxprot; - uint32_t initprot; - uint32_t nsects; - uint32_t flags; - - bool - operator==(const Segment& rhs) const - { - return name == rhs.name && vmaddr == rhs.vmaddr && vmsize == rhs.vmsize; - } - - void - PutToLog (lldb_private::Log *log, - lldb::addr_t slide) const; - - }; - - struct ImageInfo - { - lldb::addr_t address; // Address of mach header for this dylib - lldb::addr_t slide; // The amount to slide all segments by if there is a global slide. - lldb::addr_t mod_date; // Modification date for this dylib - lldb_private::FileSpec file_spec; // Resolved path for this dylib - lldb_private::UUID uuid; // UUID for this dylib if it has one, else all zeros - llvm::MachO::mach_header header; // The mach header for this image - std::vector<Segment> segments; // All segment vmaddr and vmsize pairs for this executable (from memory of inferior) - uint32_t load_stop_id; // The process stop ID that the sections for this image were loaded - llvm::Triple::OSType os_type; // LC_VERSION_MIN_... load command os type - std::string min_version_os_sdk; // LC_VERSION_MIN_... sdk value - - ImageInfo() : - address(LLDB_INVALID_ADDRESS), - slide(0), - mod_date(0), - file_spec(), - uuid(), - header(), - segments(), - load_stop_id(0), - os_type (llvm::Triple::OSType::UnknownOS), - min_version_os_sdk() - { - } - - void - Clear(bool load_cmd_data_only) - { - if (!load_cmd_data_only) - { - address = LLDB_INVALID_ADDRESS; - slide = 0; - mod_date = 0; - file_spec.Clear(); - ::memset (&header, 0, sizeof(header)); - } - uuid.Clear(); - segments.clear(); - load_stop_id = 0; - os_type = llvm::Triple::OSType::UnknownOS; - min_version_os_sdk.clear(); - } - - bool - operator == (const ImageInfo& rhs) const - { - return address == rhs.address - && slide == rhs.slide - && mod_date == rhs.mod_date - && file_spec == rhs.file_spec - && uuid == rhs.uuid - && memcmp(&header, &rhs.header, sizeof(header)) == 0 - && segments == rhs.segments - && os_type == rhs.os_type; - } - - bool - UUIDValid() const - { - return uuid.IsValid(); - } - - uint32_t - GetAddressByteSize () - { - if (header.cputype) - { - if (header.cputype & llvm::MachO::CPU_ARCH_ABI64) - return 8; - else - return 4; - } - return 0; - } - - lldb_private::ArchSpec - GetArchitecture () const - { - return lldb_private::ArchSpec (lldb_private::eArchTypeMachO, header.cputype, header.cpusubtype); - } - - const Segment * - FindSegment (const lldb_private::ConstString &name) const; - - void - PutToLog (lldb_private::Log *log) const; - - typedef std::vector<ImageInfo> collection; - typedef collection::iterator iterator; - typedef collection::const_iterator const_iterator; - }; - - bool - UpdateImageLoadAddress(lldb_private::Module *module, ImageInfo& info); - - bool - UnloadModuleSections (lldb_private::Module *module, ImageInfo& info); - - lldb::ModuleSP - FindTargetModuleForImageInfo (ImageInfo &image_info, - bool can_create, - bool *did_create_ptr); - - void - UnloadImages (const std::vector<lldb::addr_t> &solib_addresses); - - void - UnloadAllImages (); - - virtual bool - SetNotificationBreakpoint () = 0; - - virtual void - ClearNotificationBreakpoint () = 0; - - virtual bool - DidSetNotificationBreakpoint () = 0; - - typedef std::map<uint64_t, lldb::addr_t> PthreadKeyToTLSMap; - typedef std::map<lldb::user_id_t, PthreadKeyToTLSMap> ThreadIDToTLSMap; - - std::recursive_mutex & - GetMutex () const - { - return m_mutex; + void PrivateInitialize(lldb_private::Process *process); + + void PrivateProcessStateChanged(lldb_private::Process *process, + lldb::StateType state); + + void Clear(bool clear_process); + + // Clear method for classes derived from this one + virtual void DoClear() = 0; + + void SetDYLDModule(lldb::ModuleSP &dyld_module_sp); + + lldb::ModuleSP GetDYLDModule(); + + class Segment { + public: + Segment() + : name(), vmaddr(LLDB_INVALID_ADDRESS), vmsize(0), fileoff(0), + filesize(0), maxprot(0), initprot(0), nsects(0), flags(0) {} + + lldb_private::ConstString name; + lldb::addr_t vmaddr; + lldb::addr_t vmsize; + lldb::addr_t fileoff; + lldb::addr_t filesize; + uint32_t maxprot; + uint32_t initprot; + uint32_t nsects; + uint32_t flags; + + bool operator==(const Segment &rhs) const { + return name == rhs.name && vmaddr == rhs.vmaddr && vmsize == rhs.vmsize; } - lldb::ModuleSP - GetPThreadLibraryModule(); + void PutToLog(lldb_private::Log *log, lldb::addr_t slide) const; + }; + + struct ImageInfo { + lldb::addr_t address; // Address of mach header for this dylib + lldb::addr_t slide; // The amount to slide all segments by if there is a + // global slide. + lldb::addr_t mod_date; // Modification date for this dylib + lldb_private::FileSpec file_spec; // Resolved path for this dylib + lldb_private::UUID + uuid; // UUID for this dylib if it has one, else all zeros + llvm::MachO::mach_header header; // The mach header for this image + std::vector<Segment> segments; // All segment vmaddr and vmsize pairs for + // this executable (from memory of inferior) + uint32_t load_stop_id; // The process stop ID that the sections for this + // image were loaded + llvm::Triple::OSType os_type; // LC_VERSION_MIN_... load command os type + std::string min_version_os_sdk; // LC_VERSION_MIN_... sdk value + + ImageInfo() + : address(LLDB_INVALID_ADDRESS), slide(0), mod_date(0), file_spec(), + uuid(), header(), segments(), load_stop_id(0), + os_type(llvm::Triple::OSType::UnknownOS), min_version_os_sdk() {} + + void Clear(bool load_cmd_data_only) { + if (!load_cmd_data_only) { + address = LLDB_INVALID_ADDRESS; + slide = 0; + mod_date = 0; + file_spec.Clear(); + ::memset(&header, 0, sizeof(header)); + } + uuid.Clear(); + segments.clear(); + load_stop_id = 0; + os_type = llvm::Triple::OSType::UnknownOS; + min_version_os_sdk.clear(); + } + + bool operator==(const ImageInfo &rhs) const { + return address == rhs.address && slide == rhs.slide && + mod_date == rhs.mod_date && file_spec == rhs.file_spec && + uuid == rhs.uuid && + memcmp(&header, &rhs.header, sizeof(header)) == 0 && + segments == rhs.segments && os_type == rhs.os_type; + } + + bool UUIDValid() const { return uuid.IsValid(); } + + uint32_t GetAddressByteSize() { + if (header.cputype) { + if (header.cputype & llvm::MachO::CPU_ARCH_ABI64) + return 8; + else + return 4; + } + return 0; + } + + lldb_private::ArchSpec GetArchitecture() const { + return lldb_private::ArchSpec(lldb_private::eArchTypeMachO, + header.cputype, header.cpusubtype); + } + + const Segment *FindSegment(const lldb_private::ConstString &name) const; + + void PutToLog(lldb_private::Log *log) const; + + typedef std::vector<ImageInfo> collection; + typedef collection::iterator iterator; + typedef collection::const_iterator const_iterator; + }; + + bool UpdateImageLoadAddress(lldb_private::Module *module, ImageInfo &info); + + bool UnloadModuleSections(lldb_private::Module *module, ImageInfo &info); + + lldb::ModuleSP FindTargetModuleForImageInfo(ImageInfo &image_info, + bool can_create, + bool *did_create_ptr); + + void UnloadImages(const std::vector<lldb::addr_t> &solib_addresses); + + void UnloadAllImages(); + + virtual bool SetNotificationBreakpoint() = 0; + + virtual void ClearNotificationBreakpoint() = 0; + + virtual bool DidSetNotificationBreakpoint() = 0; + + typedef std::map<uint64_t, lldb::addr_t> PthreadKeyToTLSMap; + typedef std::map<lldb::user_id_t, PthreadKeyToTLSMap> ThreadIDToTLSMap; + + std::recursive_mutex &GetMutex() const { return m_mutex; } + + lldb::ModuleSP GetPThreadLibraryModule(); - lldb_private::Address - GetPthreadSetSpecificAddress(); + lldb_private::Address GetPthreadSetSpecificAddress(); - bool - JSONImageInformationIntoImageInfo (lldb_private::StructuredData::ObjectSP image_details, ImageInfo::collection &image_infos); + bool JSONImageInformationIntoImageInfo( + lldb_private::StructuredData::ObjectSP image_details, + ImageInfo::collection &image_infos); - // If image_infos contains / may contain dyld or executable image, call this method - // to keep our internal record keeping of the special binaries up-to-date. - void - UpdateSpecialBinariesFromNewImageInfos (ImageInfo::collection &image_infos); + // If image_infos contains / may contain dyld or executable image, call this + // method + // to keep our internal record keeping of the special binaries up-to-date. + void + UpdateSpecialBinariesFromNewImageInfos(ImageInfo::collection &image_infos); - // if image_info is a dyld binary, call this method - void - UpdateDYLDImageInfoFromNewImageInfo (ImageInfo &image_info); + // if image_info is a dyld binary, call this method + void UpdateDYLDImageInfoFromNewImageInfo(ImageInfo &image_info); - // If image_infos contains / may contain executable image, call this method - // to keep our internal record keeping of the special dyld binary up-to-date. - void - AddExecutableModuleIfInImageInfos (ImageInfo::collection &image_infos); + // If image_infos contains / may contain executable image, call this method + // to keep our internal record keeping of the special dyld binary up-to-date. + void AddExecutableModuleIfInImageInfos(ImageInfo::collection &image_infos); - bool - AddModulesUsingImageInfos (ImageInfo::collection &image_infos); + bool AddModulesUsingImageInfos(ImageInfo::collection &image_infos); - // Whether we should use the new dyld SPI to get shared library information, or read - // it directly out of the dyld_all_image_infos. Whether we use the (newer) DynamicLoaderMacOS - // plugin or the (older) DynamicLoaderMacOSX plugin. - static bool - UseDYLDSPI (lldb_private::Process *process); + // Whether we should use the new dyld SPI to get shared library information, + // or read + // it directly out of the dyld_all_image_infos. Whether we use the (newer) + // DynamicLoaderMacOS + // plugin or the (older) DynamicLoaderMacOSX plugin. + static bool UseDYLDSPI(lldb_private::Process *process); - lldb::ModuleWP m_dyld_module_wp; // the dyld whose file type (mac, ios, etc) matches the process - lldb::ModuleWP m_libpthread_module_wp; - lldb_private::Address m_pthread_getspecific_addr; - ThreadIDToTLSMap m_tid_to_tls_map; - ImageInfo::collection m_dyld_image_infos; // Current shared libraries information - uint32_t m_dyld_image_infos_stop_id; // The process stop ID that "m_dyld_image_infos" is valid for - ImageInfo m_dyld; - mutable std::recursive_mutex m_mutex; + lldb::ModuleWP m_dyld_module_wp; // the dyld whose file type (mac, ios, etc) + // matches the process + lldb::ModuleWP m_libpthread_module_wp; + lldb_private::Address m_pthread_getspecific_addr; + ThreadIDToTLSMap m_tid_to_tls_map; + ImageInfo::collection + m_dyld_image_infos; // Current shared libraries information + uint32_t m_dyld_image_infos_stop_id; // The process stop ID that + // "m_dyld_image_infos" is valid for + ImageInfo m_dyld; + mutable std::recursive_mutex m_mutex; private: - DISALLOW_COPY_AND_ASSIGN (DynamicLoaderDarwin); + DISALLOW_COPY_AND_ASSIGN(DynamicLoaderDarwin); }; } // namespace lldb_private diff --git a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp index 718134ac4d7..70961c0e8e5 100644 --- a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp +++ b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.cpp @@ -15,158 +15,131 @@ #include "lldb/Core/Section.h" #include "lldb/Core/State.h" #include "lldb/Symbol/ClangASTContext.h" -#include "lldb/Symbol/SymbolVendor.h" #include "lldb/Symbol/ObjectFile.h" +#include "lldb/Symbol/SymbolVendor.h" #include "lldb/Target/ABI.h" +#include "lldb/Target/StackFrame.h" #include "lldb/Target/Target.h" #include "lldb/Target/Thread.h" -#include "lldb/Target/StackFrame.h" -#include "DynamicLoaderMacOS.h" #include "DynamicLoaderDarwin.h" +#include "DynamicLoaderMacOS.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: - create = triple_ref.getVendor() == llvm::Triple::Apple; - break; - default: - create = false; - break; - } - } +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 (UseDYLDSPI (process) == false) - { + 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: + create = triple_ref.getVendor() == llvm::Triple::Apple; + break; + default: create = false; + break; + } } - - if (create) - return new DynamicLoaderMacOS (process); - return NULL; + } + + if (UseDYLDSPI(process) == false) { + create = false; + } + + if (create) + return new DynamicLoaderMacOS(process); + return NULL; } //---------------------------------------------------------------------- // Constructor //---------------------------------------------------------------------- -DynamicLoaderMacOS::DynamicLoaderMacOS (Process* process) : - DynamicLoaderDarwin(process), - m_image_infos_stop_id (UINT32_MAX), - m_break_id(LLDB_INVALID_BREAK_ID), - m_mutex() -{ -} +DynamicLoaderMacOS::DynamicLoaderMacOS(Process *process) + : DynamicLoaderDarwin(process), m_image_infos_stop_id(UINT32_MAX), + m_break_id(LLDB_INVALID_BREAK_ID), m_mutex() {} //---------------------------------------------------------------------- // Destructor //---------------------------------------------------------------------- -DynamicLoaderMacOS::~DynamicLoaderMacOS() -{ - if (LLDB_BREAK_ID_IS_VALID(m_break_id)) - m_process->GetTarget().RemoveBreakpointByID (m_break_id); +DynamicLoaderMacOS::~DynamicLoaderMacOS() { + if (LLDB_BREAK_ID_IS_VALID(m_break_id)) + m_process->GetTarget().RemoveBreakpointByID(m_break_id); } -bool -DynamicLoaderMacOS::ProcessDidExec () -{ - std::lock_guard<std::recursive_mutex> 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) - { - // 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() == ConstString("_dyld_start")) - did_exec = true; - } - } - } - +bool DynamicLoaderMacOS::ProcessDidExec() { + std::lock_guard<std::recursive_mutex> 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) { + // 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() == ConstString("_dyld_start")) + did_exec = true; + } } + } } + } - if (did_exec) - { - m_libpthread_module_wp.reset(); - m_pthread_getspecific_addr.Clear(); - } - return did_exec; + if (did_exec) { + m_libpthread_module_wp.reset(); + m_pthread_getspecific_addr.Clear(); + } + return did_exec; } //---------------------------------------------------------------------- // Clear out the state of this class. //---------------------------------------------------------------------- -void -DynamicLoaderMacOS::DoClear () -{ - std::lock_guard<std::recursive_mutex> guard(m_mutex); +void DynamicLoaderMacOS::DoClear() { + std::lock_guard<std::recursive_mutex> 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_break_id)) + m_process->GetTarget().RemoveBreakpointByID(m_break_id); - m_break_id = LLDB_INVALID_BREAK_ID; + m_break_id = LLDB_INVALID_BREAK_ID; } //---------------------------------------------------------------------- // Check if we have found DYLD yet //---------------------------------------------------------------------- -bool -DynamicLoaderMacOS::DidSetNotificationBreakpoint() -{ - return LLDB_BREAK_ID_IS_VALID (m_break_id); +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); - } +void DynamicLoaderMacOS::ClearNotificationBreakpoint() { + if (LLDB_BREAK_ID_IS_VALID(m_break_id)) { + m_process->GetTarget().RemoveBreakpointByID(m_break_id); + } } //---------------------------------------------------------------------- @@ -175,407 +148,376 @@ DynamicLoaderMacOS::ClearNotificationBreakpoint () // to get the DYLD info (available on SnowLeopard only). If that fails, // then check in the default addresses. //---------------------------------------------------------------------- -void -DynamicLoaderMacOS::DoInitialImageFetch() -{ - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); - - 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)) - { - if (log) - log->Printf ("Initial module fetch: Adding %" PRId64 " modules.\n", (uint64_t) image_infos.size()); - - UpdateSpecialBinariesFromNewImageInfos (image_infos); - AddModulesUsingImageInfos (image_infos); - } +void DynamicLoaderMacOS::DoInitialImageFetch() { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER)); + + 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)) { + if (log) + log->Printf("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(); -} + } -bool -DynamicLoaderMacOS::NeedToDoInitialImageFetch () -{ - return true; + m_dyld_image_infos_stop_id = m_process->GetStopID(); } +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) -{ - // Let the event know that the images have changed - // DYLD passes three arguments to the notification breakpoint. - // Arg1: enum dyld_notify_mode mode - 0 = adding, 1 = removing, 2 = remove all - // Arg2: unsigned long icount - Number of shared libraries added/removed - // Arg3: uint64_t mach_headers[] - Array of load addresses of binaries added/removed - - 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; - } +bool DynamicLoaderMacOS::NotifyBreakpointHit(void *baton, + StoppointCallbackContext *context, + lldb::user_id_t break_id, + lldb::user_id_t break_loc_id) { + // Let the event know that the images have changed + // DYLD passes three arguments to the notification breakpoint. + // Arg1: enum dyld_notify_mode mode - 0 = adding, 1 = removing, 2 = remove all + // Arg2: unsigned long icount - Number of shared libraries + // added/removed + // Arg3: uint64_t mach_headers[] - Array of load addresses of binaries + // added/removed + + 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; - 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: - - ClangASTContext *clang_ast_context = process->GetTarget().GetScratchClangASTContext(); - ValueList argument_values; - - Value mode_value; // enum dyld_notify_mode { dyld_notify_adding=0, dyld_notify_removing=1, dyld_notify_remove_all=2 }; - Value count_value; // unsigned long count - Value headers_value; // uint64_t machHeaders[] (aka void*) - - CompilerType clang_void_ptr_type = clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType(); - CompilerType clang_uint32_type = clang_ast_context->GetBuiltinTypeForEncodingAndBitSize(lldb::eEncodingUint, 32); - CompilerType clang_uint64_type = clang_ast_context->GetBuiltinTypeForEncodingAndBitSize(lldb::eEncodingUint, 32); - - mode_value.SetValueType (Value::eValueTypeScalar); - mode_value.SetCompilerType (clang_uint32_type); - - if (process->GetTarget().GetArchitecture().GetAddressByteSize() == 4) - { - count_value.SetValueType (Value::eValueTypeScalar); - count_value.SetCompilerType (clang_uint32_type); - } - else - { - count_value.SetValueType (Value::eValueTypeScalar); - count_value.SetCompilerType (clang_uint64_type); - } + 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: + + ClangASTContext *clang_ast_context = + process->GetTarget().GetScratchClangASTContext(); + ValueList argument_values; + + Value mode_value; // enum dyld_notify_mode { dyld_notify_adding=0, + // dyld_notify_removing=1, dyld_notify_remove_all=2 }; + Value count_value; // unsigned long count + Value headers_value; // uint64_t machHeaders[] (aka void*) + + CompilerType clang_void_ptr_type = + clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType(); + CompilerType clang_uint32_type = + clang_ast_context->GetBuiltinTypeForEncodingAndBitSize( + lldb::eEncodingUint, 32); + CompilerType clang_uint64_type = + clang_ast_context->GetBuiltinTypeForEncodingAndBitSize( + lldb::eEncodingUint, 32); + + mode_value.SetValueType(Value::eValueTypeScalar); + mode_value.SetCompilerType(clang_uint32_type); + + if (process->GetTarget().GetArchitecture().GetAddressByteSize() == 4) { + count_value.SetValueType(Value::eValueTypeScalar); + count_value.SetCompilerType(clang_uint32_type); + } else { + count_value.SetValueType(Value::eValueTypeScalar); + count_value.SetCompilerType(clang_uint64_type); + } - headers_value.SetValueType (Value::eValueTypeScalar); - 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<uint32_t>(-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<uint32_t>(-1)) - { - addr_t header_array = argument_values.GetValueAtIndex(2)->GetScalar().ULongLong(-1); - if (header_array != static_cast<uint64_t>(-1)) - { - std::vector<addr_t> image_load_addresses; - for (uint64_t i = 0; i < image_infos_count ; i++) - { - Error error; - addr_t addr = process->ReadUnsignedIntegerFromMemory (header_array + (8 * i), 8, LLDB_INVALID_ADDRESS, error); - if (addr != LLDB_INVALID_ADDRESS) - { - image_load_addresses.push_back (addr); - } - } - if (dyld_mode == 0) - { - // dyld_notify_adding - 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 (); - } - } - } + headers_value.SetValueType(Value::eValueTypeScalar); + 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<uint32_t>(-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<uint32_t>(-1)) { + addr_t header_array = + argument_values.GetValueAtIndex(2)->GetScalar().ULongLong(-1); + if (header_array != static_cast<uint64_t>(-1)) { + std::vector<addr_t> image_load_addresses; + for (uint64_t i = 0; i < image_infos_count; i++) { + Error error; + addr_t addr = process->ReadUnsignedIntegerFromMemory( + header_array + (8 * i), 8, LLDB_INVALID_ADDRESS, error); + if (addr != LLDB_INVALID_ADDRESS) { + image_load_addresses.push_back(addr); + } + } + if (dyld_mode == 0) { + // dyld_notify_adding + 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 - { - process->GetTarget().GetDebugger().GetAsyncErrorStream()->Printf("No ABI plugin located for triple %s -- shared libraries will not be registered!\n", process->GetTarget().GetArchitecture().GetTriple().getTriple().c_str()); - } - - // Return true to stop the target, false to just let the target run - return dyld_instance->GetStopWhenImagesChange(); + } else { + process->GetTarget().GetDebugger().GetAsyncErrorStream()->Printf( + "No ABI plugin located for triple %s -- shared libraries will not be " + "registered!\n", + process->GetTarget().GetArchitecture().GetTriple().getTriple().c_str()); + } + + // Return true to stop the target, false to just let the target run + return dyld_instance->GetStopWhenImagesChange(); } -void -DynamicLoaderMacOS::AddBinaries (const std::vector<lldb::addr_t> &load_addresses) -{ - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); - ImageInfo::collection image_infos; - - if (log) - log->Printf ("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(); +void DynamicLoaderMacOS::AddBinaries( + const std::vector<lldb::addr_t> &load_addresses) { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER)); + ImageInfo::collection image_infos; + + if (log) + log->Printf("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 == NULL) - return; +void DynamicLoaderMacOS::PutToLog(Log *log) const { + if (log == NULL) + return; } -bool -DynamicLoaderMacOS::SetNotificationBreakpoint () -{ - if (m_break_id == LLDB_INVALID_BREAK_ID) - { - ConstString g_symbol_name ("_dyld_debugger_notification"); - const Symbol *symbol = nullptr; - ModuleSP dyld_sp (GetDYLDModule()); - if (dyld_sp) - { - symbol = dyld_sp->FindFirstSymbolWithNameAndType (g_symbol_name, eSymbolTypeCode); - } - if (symbol && (symbol->ValueIsAddress() || symbol->GetAddressRef().IsValid())) - { - addr_t symbol_address = symbol->GetAddressRef().GetOpcodeLoadAddress(&m_process->GetTarget()); - if (symbol_address != LLDB_INVALID_ADDRESS) - { - bool internal = true; - bool hardware = false; - Breakpoint *breakpoint = m_process->GetTarget().CreateBreakpoint(symbol_address, internal, hardware).get(); - breakpoint->SetCallback (DynamicLoaderMacOS::NotifyBreakpointHit, this, true); - breakpoint->SetBreakpointKind ("shared-library-event"); - m_break_id = breakpoint->GetID(); - } - } +bool DynamicLoaderMacOS::SetNotificationBreakpoint() { + if (m_break_id == LLDB_INVALID_BREAK_ID) { + ConstString g_symbol_name("_dyld_debugger_notification"); + const Symbol *symbol = nullptr; + ModuleSP dyld_sp(GetDYLDModule()); + if (dyld_sp) { + symbol = dyld_sp->FindFirstSymbolWithNameAndType(g_symbol_name, + eSymbolTypeCode); } - return m_break_id != LLDB_INVALID_BREAK_ID; + if (symbol && + (symbol->ValueIsAddress() || symbol->GetAddressRef().IsValid())) { + addr_t symbol_address = + symbol->GetAddressRef().GetOpcodeLoadAddress(&m_process->GetTarget()); + if (symbol_address != LLDB_INVALID_ADDRESS) { + bool internal = true; + bool hardware = false; + Breakpoint *breakpoint = + m_process->GetTarget() + .CreateBreakpoint(symbol_address, internal, hardware) + .get(); + breakpoint->SetCallback(DynamicLoaderMacOS::NotifyBreakpointHit, this, + true); + breakpoint->SetBreakpointKind("shared-library-event"); + m_break_id = breakpoint->GetID(); + } + } + } + return m_break_id != LLDB_INVALID_BREAK_ID; } - addr_t -DynamicLoaderMacOS::GetDyldLockVariableAddressFromModule (Module *module) -{ - SymbolContext sc; - SymbolVendor *sym_vendor = module->GetSymbolVendor (); - Target &target = m_process->GetTarget (); - if (sym_vendor) - { - Symtab *symtab = sym_vendor->GetSymtab(); - if (symtab) - { - std::vector<uint32_t> 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); - } - } +DynamicLoaderMacOS::GetDyldLockVariableAddressFromModule(Module *module) { + SymbolContext sc; + SymbolVendor *sym_vendor = module->GetSymbolVendor(); + Target &target = m_process->GetTarget(); + if (sym_vendor) { + Symtab *symtab = sym_vendor->GetSymtab(); + if (symtab) { + std::vector<uint32_t> 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; + } + return LLDB_INVALID_ADDRESS; } // Look for this symbol: // -// int __attribute__((visibility("hidden"))) _dyld_global_lock_held = 0; +// int __attribute__((visibility("hidden"))) _dyld_global_lock_held = +// 0; // // in libdyld.dylib. -Error -DynamicLoaderMacOS::CanLoadImage () -{ - Error error; - addr_t symbol_address = LLDB_INVALID_ADDRESS; - Target &target = m_process->GetTarget (); - const ModuleList &target_modules = target.GetImages(); - std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex()); - const size_t num_modules = target_modules.GetSize(); - ConstString g_libdyld_name ("libdyld.dylib"); - - // Find any modules named "libdyld.dylib" and look for the symbol there first - for (size_t i = 0; i < num_modules; i++) - { - Module *module_pointer = target_modules.GetModulePointerAtIndexUnlocked (i); - if (module_pointer) - { - if (module_pointer->GetFileSpec().GetFilename() == g_libdyld_name) - { - symbol_address = GetDyldLockVariableAddressFromModule (module_pointer); - if (symbol_address != LLDB_INVALID_ADDRESS) - break; - } - } +Error DynamicLoaderMacOS::CanLoadImage() { + Error error; + addr_t symbol_address = LLDB_INVALID_ADDRESS; + Target &target = m_process->GetTarget(); + const ModuleList &target_modules = target.GetImages(); + std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex()); + const size_t num_modules = target_modules.GetSize(); + ConstString g_libdyld_name("libdyld.dylib"); + + // Find any modules named "libdyld.dylib" and look for the symbol there first + for (size_t i = 0; i < num_modules; i++) { + Module *module_pointer = target_modules.GetModulePointerAtIndexUnlocked(i); + if (module_pointer) { + if (module_pointer->GetFileSpec().GetFilename() == g_libdyld_name) { + symbol_address = GetDyldLockVariableAddressFromModule(module_pointer); + if (symbol_address != LLDB_INVALID_ADDRESS) + break; + } } - - // Search through all modules looking for the symbol in them - if (symbol_address == LLDB_INVALID_ADDRESS) - { - for (size_t i = 0; i < num_modules; i++) - { - Module *module_pointer = target_modules.GetModulePointerAtIndexUnlocked (i); - if (module_pointer) - { - addr_t symbol_address = GetDyldLockVariableAddressFromModule (module_pointer); - if (symbol_address != LLDB_INVALID_ADDRESS) - break; - } - } + } + + // Search through all modules looking for the symbol in them + if (symbol_address == LLDB_INVALID_ADDRESS) { + for (size_t i = 0; i < num_modules; i++) { + Module *module_pointer = + target_modules.GetModulePointerAtIndexUnlocked(i); + if (module_pointer) { + addr_t symbol_address = + GetDyldLockVariableAddressFromModule(module_pointer); + 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. + // 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.SetErrorToGenericError(); - } - } - } - else + if (symbol_address != LLDB_INVALID_ADDRESS) { { - // 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. + int lock_held = + m_process->ReadUnsignedIntegerFromMemory(symbol_address, 4, 0, error); + if (lock_held != 0) { error.SetErrorToGenericError(); + } } - return error; + } 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. + error.SetErrorToGenericError(); + } + 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(); - } +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")->GetIntegerValue(LLDB_INVALID_ADDRESS); - std::string uuid_str = info_dict->GetValueForKey("shared_cache_uuid")->GetStringValue().c_str(); - if (!uuid_str.empty()) - uuid.SetFromCString (uuid_str.c_str()); - if (info_dict->GetValueForKey("no_shared_cache")->GetBooleanValue() == false) - 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; - } + // {"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") + ->GetIntegerValue(LLDB_INVALID_ADDRESS); + std::string uuid_str = info_dict->GetValueForKey("shared_cache_uuid") + ->GetStringValue() + .c_str(); + if (!uuid_str.empty()) + uuid.SetFromCString(uuid_str.c_str()); + if (info_dict->GetValueForKey("no_shared_cache")->GetBooleanValue() == + false) + 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; + } + return false; } -void -DynamicLoaderMacOS::Initialize() -{ - PluginManager::RegisterPlugin (GetPluginNameStatic(), - GetPluginDescriptionStatic(), - CreateInstance); +void DynamicLoaderMacOS::Initialize() { + PluginManager::RegisterPlugin(GetPluginNameStatic(), + GetPluginDescriptionStatic(), CreateInstance); } -void -DynamicLoaderMacOS::Terminate() -{ - PluginManager::UnregisterPlugin (CreateInstance); +void DynamicLoaderMacOS::Terminate() { + PluginManager::UnregisterPlugin(CreateInstance); } - -lldb_private::ConstString -DynamicLoaderMacOS::GetPluginNameStatic() -{ - static ConstString g_name("macos-dyld"); - return g_name; +lldb_private::ConstString DynamicLoaderMacOS::GetPluginNameStatic() { + static ConstString g_name("macos-dyld"); + return g_name; } -const char * -DynamicLoaderMacOS::GetPluginDescriptionStatic() -{ - return "Dynamic loader plug-in that watches for shared library loads/unloads in MacOSX user processes."; +const char *DynamicLoaderMacOS::GetPluginDescriptionStatic() { + return "Dynamic loader plug-in that watches for shared library loads/unloads " + "in MacOSX user processes."; } - //------------------------------------------------------------------ // PluginInterface protocol //------------------------------------------------------------------ -lldb_private::ConstString -DynamicLoaderMacOS::GetPluginName() -{ - return GetPluginNameStatic(); +lldb_private::ConstString DynamicLoaderMacOS::GetPluginName() { + return GetPluginNameStatic(); } -uint32_t -DynamicLoaderMacOS::GetPluginVersion() -{ - return 1; -} +uint32_t DynamicLoaderMacOS::GetPluginVersion() { return 1; } diff --git a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.h b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.h index 63d67308d69..93273b13bb7 100644 --- a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.h +++ b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOS.h @@ -7,7 +7,8 @@ // //===----------------------------------------------------------------------===// -// This is the DynamicLoader plugin for Darwin (macOS / iPhoneOS / tvOS / watchOS) +// This is the DynamicLoader plugin for Darwin (macOS / iPhoneOS / tvOS / +// watchOS) // platforms late 2016 and newer, where lldb will call dyld SPI functions to get // information about shared libraries, information about the shared cache, and // the _dyld_debugger_notification function we put a breakpoint on give us an @@ -19,117 +20,98 @@ // C Includes // C++ Includes -#include <vector> #include <mutex> +#include <vector> // Other libraries and framework includes // Project includes -#include "lldb/Target/DynamicLoader.h" -#include "lldb/Host/FileSpec.h" #include "lldb/Core/StructuredData.h" #include "lldb/Core/UUID.h" +#include "lldb/Host/FileSpec.h" +#include "lldb/Target/DynamicLoader.h" #include "lldb/Target/Process.h" #include "lldb/Utility/SafeMachO.h" #include "DynamicLoaderDarwin.h" -class DynamicLoaderMacOS : public lldb_private::DynamicLoaderDarwin -{ +class DynamicLoaderMacOS : public lldb_private::DynamicLoaderDarwin { public: - DynamicLoaderMacOS(lldb_private::Process *process); + DynamicLoaderMacOS(lldb_private::Process *process); - virtual ~DynamicLoaderMacOS() override; + virtual ~DynamicLoaderMacOS() override; - //------------------------------------------------------------------ - // Static Functions - //------------------------------------------------------------------ - static void - Initialize(); + //------------------------------------------------------------------ + // Static Functions + //------------------------------------------------------------------ + static void Initialize(); - static void - Terminate(); + static void Terminate(); - static lldb_private::ConstString - GetPluginNameStatic(); + static lldb_private::ConstString GetPluginNameStatic(); - static const char * - GetPluginDescriptionStatic(); + static const char *GetPluginDescriptionStatic(); - static lldb_private::DynamicLoader * - CreateInstance (lldb_private::Process *process, bool force); + static lldb_private::DynamicLoader * + CreateInstance(lldb_private::Process *process, bool force); - //------------------------------------------------------------------ - /// Called after attaching a process. - /// - /// Allow DynamicLoader plug-ins to execute some code after - /// attaching to a process. - //------------------------------------------------------------------ - bool - ProcessDidExec() override; + //------------------------------------------------------------------ + /// Called after attaching a process. + /// + /// Allow DynamicLoader plug-ins to execute some code after + /// attaching to a process. + //------------------------------------------------------------------ + bool ProcessDidExec() override; - lldb_private::Error - CanLoadImage() override; + lldb_private::Error CanLoadImage() override; - bool - GetSharedCacheInformation (lldb::addr_t &base_address, - lldb_private::UUID &uuid, - lldb_private::LazyBool &using_shared_cache, - lldb_private::LazyBool &private_shared_cache) override; + bool GetSharedCacheInformation( + lldb::addr_t &base_address, lldb_private::UUID &uuid, + lldb_private::LazyBool &using_shared_cache, + lldb_private::LazyBool &private_shared_cache) override; - //------------------------------------------------------------------ - // PluginInterface protocol - //------------------------------------------------------------------ - lldb_private::ConstString - GetPluginName() override; + //------------------------------------------------------------------ + // PluginInterface protocol + //------------------------------------------------------------------ + lldb_private::ConstString GetPluginName() override; - uint32_t - GetPluginVersion() override; + uint32_t GetPluginVersion() override; protected: - void - PutToLog(lldb_private::Log *log) const; + void PutToLog(lldb_private::Log *log) const; - void - DoInitialImageFetch () override; + void DoInitialImageFetch() override; - bool - NeedToDoInitialImageFetch () override; + bool NeedToDoInitialImageFetch() override; - bool - DidSetNotificationBreakpoint () override; + bool DidSetNotificationBreakpoint() override; - void - AddBinaries (const std::vector<lldb::addr_t> &load_addresses); + void AddBinaries(const std::vector<lldb::addr_t> &load_addresses); - void - DoClear () override; + void DoClear() override; - static bool - NotifyBreakpointHit (void *baton, - lldb_private::StoppointCallbackContext *context, - lldb::user_id_t break_id, - lldb::user_id_t break_loc_id); + static bool + NotifyBreakpointHit(void *baton, + lldb_private::StoppointCallbackContext *context, + lldb::user_id_t break_id, lldb::user_id_t break_loc_id); - bool - SetNotificationBreakpoint () override; + bool SetNotificationBreakpoint() override; - void - ClearNotificationBreakpoint () override; + void ClearNotificationBreakpoint() override; - void - UpdateImageInfosHeaderAndLoadCommands(ImageInfo::collection &image_infos, - uint32_t infos_count, - bool update_executable); + void UpdateImageInfosHeaderAndLoadCommands(ImageInfo::collection &image_infos, + uint32_t infos_count, + bool update_executable); - lldb::addr_t - GetDyldLockVariableAddressFromModule (lldb_private::Module *module); + lldb::addr_t + GetDyldLockVariableAddressFromModule(lldb_private::Module *module); - uint32_t m_image_infos_stop_id; // The Stop ID the last time we loaded/unloaded images - lldb::user_id_t m_break_id; - mutable std::recursive_mutex m_mutex; + uint32_t m_image_infos_stop_id; // The Stop ID the last time we + // loaded/unloaded images + lldb::user_id_t m_break_id; + mutable std::recursive_mutex m_mutex; private: - DISALLOW_COPY_AND_ASSIGN (DynamicLoaderMacOS); + DISALLOW_COPY_AND_ASSIGN(DynamicLoaderMacOS); }; #endif // liblldb_DynamicLoaderMacOS_h_ diff --git a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp index 6e2d625a9b5..bbaa1baec73 100644 --- a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp +++ b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp @@ -20,21 +20,21 @@ #include "lldb/Symbol/ClangASTContext.h" #include "lldb/Symbol/Function.h" #include "lldb/Symbol/ObjectFile.h" -#include "lldb/Target/ObjCLanguageRuntime.h" #include "lldb/Target/ABI.h" +#include "lldb/Target/ObjCLanguageRuntime.h" #include "lldb/Target/RegisterContext.h" +#include "lldb/Target/StackFrame.h" #include "lldb/Target/Target.h" #include "lldb/Target/Thread.h" #include "lldb/Target/ThreadPlanRunToAddress.h" -#include "lldb/Target/StackFrame.h" -#include "DynamicLoaderMacOSXDYLD.h" #include "DynamicLoaderDarwin.h" +#include "DynamicLoaderMacOSXDYLD.h" //#define ENABLE_DEBUG_PRINTF // COMMENT THIS LINE OUT PRIOR TO CHECKIN #ifdef ENABLE_DEBUG_PRINTF #include <stdio.h> -#define DEBUG_PRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__) +#define DEBUG_PRINTF(fmt, ...) printf(fmt, ##__VA_ARGS__) #else #define DEBUG_PRINTF(fmt, ...) #endif @@ -48,169 +48,140 @@ 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 * -DynamicLoaderMacOSXDYLD::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: - create = triple_ref.getVendor() == llvm::Triple::Apple; - break; - default: - create = false; - break; - } - } +DynamicLoader *DynamicLoaderMacOSXDYLD::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 (UseDYLDSPI (process) == true) - { + 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: + create = triple_ref.getVendor() == llvm::Triple::Apple; + break; + default: create = false; + break; + } } - - if (create) - return new DynamicLoaderMacOSXDYLD (process); - return NULL; + } + + if (UseDYLDSPI(process) == true) { + create = false; + } + + if (create) + return new DynamicLoaderMacOSXDYLD(process); + return NULL; } //---------------------------------------------------------------------- // Constructor //---------------------------------------------------------------------- -DynamicLoaderMacOSXDYLD::DynamicLoaderMacOSXDYLD (Process* process) : - DynamicLoaderDarwin(process), - m_dyld_all_image_infos_addr(LLDB_INVALID_ADDRESS), - m_dyld_all_image_infos(), - m_dyld_all_image_infos_stop_id (UINT32_MAX), - m_break_id(LLDB_INVALID_BREAK_ID), - m_mutex(), - m_process_image_addr_is_all_images_infos (false) -{ -} +DynamicLoaderMacOSXDYLD::DynamicLoaderMacOSXDYLD(Process *process) + : DynamicLoaderDarwin(process), + m_dyld_all_image_infos_addr(LLDB_INVALID_ADDRESS), + m_dyld_all_image_infos(), m_dyld_all_image_infos_stop_id(UINT32_MAX), + m_break_id(LLDB_INVALID_BREAK_ID), m_mutex(), + m_process_image_addr_is_all_images_infos(false) {} //---------------------------------------------------------------------- // Destructor //---------------------------------------------------------------------- -DynamicLoaderMacOSXDYLD::~DynamicLoaderMacOSXDYLD() -{ - if (LLDB_BREAK_ID_IS_VALID(m_break_id)) - m_process->GetTarget().RemoveBreakpointByID (m_break_id); +DynamicLoaderMacOSXDYLD::~DynamicLoaderMacOSXDYLD() { + if (LLDB_BREAK_ID_IS_VALID(m_break_id)) + m_process->GetTarget().RemoveBreakpointByID(m_break_id); } -bool -DynamicLoaderMacOSXDYLD::ProcessDidExec () -{ - std::lock_guard<std::recursive_mutex> 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) - { - // We know if a process has exec'ed if our "m_dyld_all_image_infos_addr" - // value differs from the Process' image info address. When a process - // execs itself it might cause a change if ASLR is enabled. - const addr_t shlib_addr = m_process->GetImageInfoAddress (); - if (m_process_image_addr_is_all_images_infos == true && shlib_addr != m_dyld_all_image_infos_addr) - { - // The image info address from the process is the 'dyld_all_image_infos' - // address and it has changed. - did_exec = true; - } - else if (m_process_image_addr_is_all_images_infos == false && shlib_addr == m_dyld.address) - { - // The image info address from the process is the mach_header - // address for dyld and it has changed. +bool DynamicLoaderMacOSXDYLD::ProcessDidExec() { + std::lock_guard<std::recursive_mutex> 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) { + // We know if a process has exec'ed if our "m_dyld_all_image_infos_addr" + // value differs from the Process' image info address. When a process + // execs itself it might cause a change if ASLR is enabled. + const addr_t shlib_addr = m_process->GetImageInfoAddress(); + if (m_process_image_addr_is_all_images_infos == true && + shlib_addr != m_dyld_all_image_infos_addr) { + // The image info address from the process is the 'dyld_all_image_infos' + // address and it has changed. + did_exec = true; + } else if (m_process_image_addr_is_all_images_infos == false && + shlib_addr == m_dyld.address) { + // The image info address from the process is the mach_header + // address for dyld and it has changed. + did_exec = true; + } else { + // ASLR might be disabled and dyld could have ended up in the same + // location. We should try and detect 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() == ConstString("_dyld_start")) did_exec = true; } - else - { - // ASLR might be disabled and dyld could have ended up in the same - // location. We should try and detect 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() == ConstString("_dyld_start")) - did_exec = true; - } - } - } - } - - if (did_exec) - { - m_libpthread_module_wp.reset(); - m_pthread_getspecific_addr.Clear(); - } + } } + } + + if (did_exec) { + m_libpthread_module_wp.reset(); + m_pthread_getspecific_addr.Clear(); + } } - return did_exec; + } + return did_exec; } //---------------------------------------------------------------------- // Clear out the state of this class. //---------------------------------------------------------------------- -void -DynamicLoaderMacOSXDYLD::DoClear () -{ - std::lock_guard<std::recursive_mutex> guard(m_mutex); +void DynamicLoaderMacOSXDYLD::DoClear() { + std::lock_guard<std::recursive_mutex> 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_break_id)) + m_process->GetTarget().RemoveBreakpointByID(m_break_id); - m_dyld_all_image_infos_addr = LLDB_INVALID_ADDRESS; - m_dyld_all_image_infos.Clear(); - m_break_id = LLDB_INVALID_BREAK_ID; + m_dyld_all_image_infos_addr = LLDB_INVALID_ADDRESS; + m_dyld_all_image_infos.Clear(); + m_break_id = LLDB_INVALID_BREAK_ID; } //---------------------------------------------------------------------- // Check if we have found DYLD yet //---------------------------------------------------------------------- -bool -DynamicLoaderMacOSXDYLD::DidSetNotificationBreakpoint() -{ - return LLDB_BREAK_ID_IS_VALID (m_break_id); +bool DynamicLoaderMacOSXDYLD::DidSetNotificationBreakpoint() { + return LLDB_BREAK_ID_IS_VALID(m_break_id); } -void -DynamicLoaderMacOSXDYLD::ClearNotificationBreakpoint () -{ - if (LLDB_BREAK_ID_IS_VALID (m_break_id)) - { - m_process->GetTarget().RemoveBreakpointByID (m_break_id); - } +void DynamicLoaderMacOSXDYLD::ClearNotificationBreakpoint() { + if (LLDB_BREAK_ID_IS_VALID(m_break_id)) { + m_process->GetTarget().RemoveBreakpointByID(m_break_id); + } } //---------------------------------------------------------------------- @@ -219,143 +190,127 @@ DynamicLoaderMacOSXDYLD::ClearNotificationBreakpoint () // to get the DYLD info (available on SnowLeopard only). If that fails, // then check in the default addresses. //---------------------------------------------------------------------- -void -DynamicLoaderMacOSXDYLD::DoInitialImageFetch() -{ - if (m_dyld_all_image_infos_addr == LLDB_INVALID_ADDRESS) - { - // Check the image info addr as it might point to the - // mach header for dyld, or it might point to the - // dyld_all_image_infos struct - const addr_t shlib_addr = m_process->GetImageInfoAddress (); - if (shlib_addr != LLDB_INVALID_ADDRESS) - { - ByteOrder byte_order = m_process->GetTarget().GetArchitecture().GetByteOrder(); - uint8_t buf[4]; - DataExtractor data (buf, sizeof(buf), byte_order, 4); - Error error; - if (m_process->ReadMemory (shlib_addr, buf, 4, error) == 4) - { - lldb::offset_t offset = 0; - uint32_t magic = data.GetU32 (&offset); - switch (magic) - { - case llvm::MachO::MH_MAGIC: - case llvm::MachO::MH_MAGIC_64: - case llvm::MachO::MH_CIGAM: - case llvm::MachO::MH_CIGAM_64: - m_process_image_addr_is_all_images_infos = false; - ReadDYLDInfoFromMemoryAndSetNotificationCallback(shlib_addr); - return; - - default: - break; - } - } - // Maybe it points to the all image infos? - m_dyld_all_image_infos_addr = shlib_addr; - m_process_image_addr_is_all_images_infos = true; - } - } +void DynamicLoaderMacOSXDYLD::DoInitialImageFetch() { + if (m_dyld_all_image_infos_addr == LLDB_INVALID_ADDRESS) { + // Check the image info addr as it might point to the + // mach header for dyld, or it might point to the + // dyld_all_image_infos struct + const addr_t shlib_addr = m_process->GetImageInfoAddress(); + if (shlib_addr != LLDB_INVALID_ADDRESS) { + ByteOrder byte_order = + m_process->GetTarget().GetArchitecture().GetByteOrder(); + uint8_t buf[4]; + DataExtractor data(buf, sizeof(buf), byte_order, 4); + Error error; + if (m_process->ReadMemory(shlib_addr, buf, 4, error) == 4) { + lldb::offset_t offset = 0; + uint32_t magic = data.GetU32(&offset); + switch (magic) { + case llvm::MachO::MH_MAGIC: + case llvm::MachO::MH_MAGIC_64: + case llvm::MachO::MH_CIGAM: + case llvm::MachO::MH_CIGAM_64: + m_process_image_addr_is_all_images_infos = false; + ReadDYLDInfoFromMemoryAndSetNotificationCallback(shlib_addr); + return; - if (m_dyld_all_image_infos_addr != LLDB_INVALID_ADDRESS) - { - if (ReadAllImageInfosStructure ()) - { - if (m_dyld_all_image_infos.dyldImageLoadAddress != LLDB_INVALID_ADDRESS) - ReadDYLDInfoFromMemoryAndSetNotificationCallback (m_dyld_all_image_infos.dyldImageLoadAddress); - else - ReadDYLDInfoFromMemoryAndSetNotificationCallback (m_dyld_all_image_infos_addr & 0xfffffffffff00000ull); - return; + default: + break; } + } + // Maybe it points to the all image infos? + m_dyld_all_image_infos_addr = shlib_addr; + m_process_image_addr_is_all_images_infos = true; } - - // Check some default values - Module *executable = m_process->GetTarget().GetExecutableModulePointer(); - - if (executable) - { - const ArchSpec &exe_arch = executable->GetArchitecture(); - if (exe_arch.GetAddressByteSize() == 8) - { - ReadDYLDInfoFromMemoryAndSetNotificationCallback(0x7fff5fc00000ull); - } - else if (exe_arch.GetMachine() == llvm::Triple::arm || exe_arch.GetMachine() == llvm::Triple::thumb || exe_arch.GetMachine() == llvm::Triple::aarch64) - { - ReadDYLDInfoFromMemoryAndSetNotificationCallback(0x2fe00000); - } - else - { - ReadDYLDInfoFromMemoryAndSetNotificationCallback(0x8fe00000); - } + } + + if (m_dyld_all_image_infos_addr != LLDB_INVALID_ADDRESS) { + if (ReadAllImageInfosStructure()) { + if (m_dyld_all_image_infos.dyldImageLoadAddress != LLDB_INVALID_ADDRESS) + ReadDYLDInfoFromMemoryAndSetNotificationCallback( + m_dyld_all_image_infos.dyldImageLoadAddress); + else + ReadDYLDInfoFromMemoryAndSetNotificationCallback( + m_dyld_all_image_infos_addr & 0xfffffffffff00000ull); + return; } - return; + } + + // Check some default values + Module *executable = m_process->GetTarget().GetExecutableModulePointer(); + + if (executable) { + const ArchSpec &exe_arch = executable->GetArchitecture(); + if (exe_arch.GetAddressByteSize() == 8) { + ReadDYLDInfoFromMemoryAndSetNotificationCallback(0x7fff5fc00000ull); + } else if (exe_arch.GetMachine() == llvm::Triple::arm || + exe_arch.GetMachine() == llvm::Triple::thumb || + exe_arch.GetMachine() == llvm::Triple::aarch64) { + ReadDYLDInfoFromMemoryAndSetNotificationCallback(0x2fe00000); + } else { + ReadDYLDInfoFromMemoryAndSetNotificationCallback(0x8fe00000); + } + } + return; } //---------------------------------------------------------------------- // Assume that dyld is in memory at ADDR and try to parse it's load // commands //---------------------------------------------------------------------- -bool -DynamicLoaderMacOSXDYLD::ReadDYLDInfoFromMemoryAndSetNotificationCallback(lldb::addr_t addr) -{ - std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); - DataExtractor data; // Load command data - static ConstString g_dyld_all_image_infos ("dyld_all_image_infos"); - if (ReadMachHeader (addr, &m_dyld.header, &data)) - { - if (m_dyld.header.filetype == llvm::MachO::MH_DYLINKER) - { - m_dyld.address = addr; - ModuleSP dyld_module_sp; - if (ParseLoadCommands (data, m_dyld, &m_dyld.file_spec)) - { - if (m_dyld.file_spec) - { - UpdateDYLDImageInfoFromNewImageInfo (m_dyld); - - } - } - dyld_module_sp = GetDYLDModule(); - - Target &target = m_process->GetTarget(); - - if (m_dyld_all_image_infos_addr == LLDB_INVALID_ADDRESS && dyld_module_sp.get()) - { - const Symbol *symbol = dyld_module_sp->FindFirstSymbolWithNameAndType (g_dyld_all_image_infos, eSymbolTypeData); - if (symbol) - m_dyld_all_image_infos_addr = symbol->GetLoadAddress(&target); - } - - // Update all image infos - InitializeFromAllImageInfos (); - - // If we didn't have an executable before, but now we do, then the - // dyld module shared pointer might be unique and we may need to add - // it again (since Target::SetExecutableModule() will clear the - // images). So append the dyld module back to the list if it is - /// unique! - if (dyld_module_sp) - { - target.GetImages().AppendIfNeeded (dyld_module_sp); - - // At this point we should have read in dyld's module, and so we should set breakpoints in it: - ModuleList modules; - modules.Append(dyld_module_sp); - target.ModulesDidLoad(modules); - SetDYLDModule (dyld_module_sp); - } - - return true; +bool DynamicLoaderMacOSXDYLD::ReadDYLDInfoFromMemoryAndSetNotificationCallback( + lldb::addr_t addr) { + std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); + DataExtractor data; // Load command data + static ConstString g_dyld_all_image_infos("dyld_all_image_infos"); + if (ReadMachHeader(addr, &m_dyld.header, &data)) { + if (m_dyld.header.filetype == llvm::MachO::MH_DYLINKER) { + m_dyld.address = addr; + ModuleSP dyld_module_sp; + if (ParseLoadCommands(data, m_dyld, &m_dyld.file_spec)) { + if (m_dyld.file_spec) { + UpdateDYLDImageInfoFromNewImageInfo(m_dyld); } + } + dyld_module_sp = GetDYLDModule(); + + Target &target = m_process->GetTarget(); + + if (m_dyld_all_image_infos_addr == LLDB_INVALID_ADDRESS && + dyld_module_sp.get()) { + const Symbol *symbol = dyld_module_sp->FindFirstSymbolWithNameAndType( + g_dyld_all_image_infos, eSymbolTypeData); + if (symbol) + m_dyld_all_image_infos_addr = symbol->GetLoadAddress(&target); + } + + // Update all image infos + InitializeFromAllImageInfos(); + + // If we didn't have an executable before, but now we do, then the + // dyld module shared pointer might be unique and we may need to add + // it again (since Target::SetExecutableModule() will clear the + // images). So append the dyld module back to the list if it is + /// unique! + if (dyld_module_sp) { + target.GetImages().AppendIfNeeded(dyld_module_sp); + + // At this point we should have read in dyld's module, and so we should + // set breakpoints in it: + ModuleList modules; + modules.Append(dyld_module_sp); + target.ModulesDidLoad(modules); + SetDYLDModule(dyld_module_sp); + } + + return true; } - return false; + } + return false; } -bool -DynamicLoaderMacOSXDYLD::NeedToDoInitialImageFetch () -{ - return m_dyld_all_image_infos_addr == LLDB_INVALID_ADDRESS; +bool DynamicLoaderMacOSXDYLD::NeedToDoInitialImageFetch() { + return m_dyld_all_image_infos_addr == LLDB_INVALID_ADDRESS; } //---------------------------------------------------------------------- @@ -364,392 +319,398 @@ DynamicLoaderMacOSXDYLD::NeedToDoInitialImageFetch () // let our super class DynamicLoader class decide if we should stop // or not (based on global preference). //---------------------------------------------------------------------- -bool -DynamicLoaderMacOSXDYLD::NotifyBreakpointHit (void *baton, - StoppointCallbackContext *context, - lldb::user_id_t break_id, - lldb::user_id_t break_loc_id) -{ - // Let the event know that the images have changed - // DYLD passes three arguments to the notification breakpoint. - // Arg1: enum dyld_image_mode mode - 0 = adding, 1 = removing - // Arg2: uint32_t infoCount - Number of shared libraries added - // Arg3: dyld_image_info info[] - Array of structs of the form: - // const struct mach_header *imageLoadAddress - // const char *imageFilePath - // uintptr_t imageFileModDate (a time_t) - - DynamicLoaderMacOSXDYLD* dyld_instance = (DynamicLoaderMacOSXDYLD*) baton; - - // First step is to see if we've already initialized the all image infos. If we haven't then this function - // will do so and return true. In the course of initializing the all_image_infos it will read the complete - // current state, so we don't need to figure out what has changed from the data passed in to us. - - 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->InitializeFromAllImageInfos()) - return dyld_instance->GetStopWhenImagesChange(); - - 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: - - ClangASTContext *clang_ast_context = process->GetTarget().GetScratchClangASTContext(); - ValueList argument_values; - Value input_value; - - CompilerType clang_void_ptr_type = clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType(); - CompilerType clang_uint32_type = clang_ast_context->GetBuiltinTypeForEncodingAndBitSize(lldb::eEncodingUint, 32); - input_value.SetValueType (Value::eValueTypeScalar); - input_value.SetCompilerType (clang_uint32_type); -// input_value.SetContext (Value::eContextTypeClangType, clang_uint32_type); - argument_values.PushValue (input_value); - argument_values.PushValue (input_value); - input_value.SetCompilerType (clang_void_ptr_type); - // input_value.SetContext (Value::eContextTypeClangType, clang_void_ptr_type); - argument_values.PushValue (input_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<uint32_t>(-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<uint32_t>(-1)) - { - // Got the number added, now go through the array of added elements, putting out the mach header - // address, and adding the image. - // Note, I'm not putting in logging here, since the AddModules & RemoveModules functions do - // all the logging internally. - - lldb::addr_t image_infos_addr = argument_values.GetValueAtIndex(2)->GetScalar().ULongLong(); - if (dyld_mode == 0) - { - // This is add: - dyld_instance->AddModulesUsingImageInfosAddress (image_infos_addr, image_infos_count); - } - else - { - // This is remove: - dyld_instance->RemoveModulesUsingImageInfosAddress (image_infos_addr, image_infos_count); - } - - } - } +bool DynamicLoaderMacOSXDYLD::NotifyBreakpointHit( + void *baton, StoppointCallbackContext *context, lldb::user_id_t break_id, + lldb::user_id_t break_loc_id) { + // Let the event know that the images have changed + // DYLD passes three arguments to the notification breakpoint. + // Arg1: enum dyld_image_mode mode - 0 = adding, 1 = removing + // Arg2: uint32_t infoCount - Number of shared libraries added + // Arg3: dyld_image_info info[] - Array of structs of the form: + // const struct mach_header + // *imageLoadAddress + // const char *imageFilePath + // uintptr_t imageFileModDate (a time_t) + + DynamicLoaderMacOSXDYLD *dyld_instance = (DynamicLoaderMacOSXDYLD *)baton; + + // First step is to see if we've already initialized the all image infos. If + // we haven't then this function + // will do so and return true. In the course of initializing the + // all_image_infos it will read the complete + // current state, so we don't need to figure out what has changed from the + // data passed in to us. + + 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->InitializeFromAllImageInfos()) + return dyld_instance->GetStopWhenImagesChange(); + + 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: + + ClangASTContext *clang_ast_context = + process->GetTarget().GetScratchClangASTContext(); + ValueList argument_values; + Value input_value; + + CompilerType clang_void_ptr_type = + clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType(); + CompilerType clang_uint32_type = + clang_ast_context->GetBuiltinTypeForEncodingAndBitSize( + lldb::eEncodingUint, 32); + input_value.SetValueType(Value::eValueTypeScalar); + input_value.SetCompilerType(clang_uint32_type); + // input_value.SetContext (Value::eContextTypeClangType, + // clang_uint32_type); + argument_values.PushValue(input_value); + argument_values.PushValue(input_value); + input_value.SetCompilerType(clang_void_ptr_type); + // input_value.SetContext (Value::eContextTypeClangType, + // clang_void_ptr_type); + argument_values.PushValue(input_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<uint32_t>(-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<uint32_t>(-1)) { + // Got the number added, now go through the array of added elements, + // putting out the mach header + // address, and adding the image. + // Note, I'm not putting in logging here, since the AddModules & + // RemoveModules functions do + // all the logging internally. + + lldb::addr_t image_infos_addr = + argument_values.GetValueAtIndex(2)->GetScalar().ULongLong(); + if (dyld_mode == 0) { + // This is add: + dyld_instance->AddModulesUsingImageInfosAddress(image_infos_addr, + image_infos_count); + } else { + // This is remove: + dyld_instance->RemoveModulesUsingImageInfosAddress( + image_infos_addr, image_infos_count); + } } + } } - else - { - process->GetTarget().GetDebugger().GetAsyncErrorStream()->Printf("No ABI plugin located for triple %s -- shared libraries will not be registered!\n", process->GetTarget().GetArchitecture().GetTriple().getTriple().c_str()); - } - - // Return true to stop the target, false to just let the target run - return dyld_instance->GetStopWhenImagesChange(); + } else { + process->GetTarget().GetDebugger().GetAsyncErrorStream()->Printf( + "No ABI plugin located for triple %s -- shared libraries will not be " + "registered!\n", + process->GetTarget().GetArchitecture().GetTriple().getTriple().c_str()); + } + + // Return true to stop the target, false to just let the target run + return dyld_instance->GetStopWhenImagesChange(); } -bool -DynamicLoaderMacOSXDYLD::ReadAllImageInfosStructure () -{ - std::lock_guard<std::recursive_mutex> guard(m_mutex); +bool DynamicLoaderMacOSXDYLD::ReadAllImageInfosStructure() { + std::lock_guard<std::recursive_mutex> guard(m_mutex); - // the all image infos is already valid for this process stop ID - if (m_process->GetStopID() == m_dyld_all_image_infos_stop_id) - return true; + // the all image infos is already valid for this process stop ID + if (m_process->GetStopID() == m_dyld_all_image_infos_stop_id) + return true; - m_dyld_all_image_infos.Clear(); - if (m_dyld_all_image_infos_addr != LLDB_INVALID_ADDRESS) - { - ByteOrder byte_order = m_process->GetTarget().GetArchitecture().GetByteOrder(); - uint32_t addr_size = 4; - if (m_dyld_all_image_infos_addr > UINT32_MAX) - addr_size = 8; + m_dyld_all_image_infos.Clear(); + if (m_dyld_all_image_infos_addr != LLDB_INVALID_ADDRESS) { + ByteOrder byte_order = + m_process->GetTarget().GetArchitecture().GetByteOrder(); + uint32_t addr_size = 4; + if (m_dyld_all_image_infos_addr > UINT32_MAX) + addr_size = 8; - uint8_t buf[256]; - DataExtractor data (buf, sizeof(buf), byte_order, addr_size); - lldb::offset_t offset = 0; + uint8_t buf[256]; + DataExtractor data(buf, sizeof(buf), byte_order, addr_size); + lldb::offset_t offset = 0; - const size_t count_v2 = sizeof (uint32_t) + // version - sizeof (uint32_t) + // infoArrayCount - addr_size + // infoArray - addr_size + // notification - addr_size + // processDetachedFromSharedRegion + libSystemInitialized + pad - addr_size; // dyldImageLoadAddress - const size_t count_v11 = count_v2 + - addr_size + // jitInfo - addr_size + // dyldVersion - addr_size + // errorMessage - addr_size + // terminationFlags - addr_size + // coreSymbolicationShmPage - addr_size + // systemOrderFlag - addr_size + // uuidArrayCount - addr_size + // uuidArray - addr_size + // dyldAllImageInfosAddress - addr_size + // initialImageCount - addr_size + // errorKind - addr_size + // errorClientOfDylibPath - addr_size + // errorTargetDylibPath - addr_size; // errorSymbol - const size_t count_v13 = count_v11 + - addr_size + // sharedCacheSlide - sizeof (uuid_t); // sharedCacheUUID - UNUSED_IF_ASSERT_DISABLED(count_v13); - assert (sizeof (buf) >= count_v13); - - Error error; - if (m_process->ReadMemory (m_dyld_all_image_infos_addr, buf, 4, error) == 4) - { - m_dyld_all_image_infos.version = data.GetU32(&offset); - // If anything in the high byte is set, we probably got the byte - // order incorrect (the process might not have it set correctly - // yet due to attaching to a program without a specified file). - if (m_dyld_all_image_infos.version & 0xff000000) - { - // We have guessed the wrong byte order. Swap it and try - // reading the version again. - if (byte_order == eByteOrderLittle) - byte_order = eByteOrderBig; - else - byte_order = eByteOrderLittle; - - data.SetByteOrder (byte_order); - offset = 0; - m_dyld_all_image_infos.version = data.GetU32(&offset); - } - } + const size_t count_v2 = sizeof(uint32_t) + // version + sizeof(uint32_t) + // infoArrayCount + addr_size + // infoArray + addr_size + // notification + addr_size + // processDetachedFromSharedRegion + + // libSystemInitialized + pad + addr_size; // dyldImageLoadAddress + const size_t count_v11 = count_v2 + addr_size + // jitInfo + addr_size + // dyldVersion + addr_size + // errorMessage + addr_size + // terminationFlags + addr_size + // coreSymbolicationShmPage + addr_size + // systemOrderFlag + addr_size + // uuidArrayCount + addr_size + // uuidArray + addr_size + // dyldAllImageInfosAddress + addr_size + // initialImageCount + addr_size + // errorKind + addr_size + // errorClientOfDylibPath + addr_size + // errorTargetDylibPath + addr_size; // errorSymbol + const size_t count_v13 = count_v11 + addr_size + // sharedCacheSlide + sizeof(uuid_t); // sharedCacheUUID + UNUSED_IF_ASSERT_DISABLED(count_v13); + assert(sizeof(buf) >= count_v13); + + Error error; + if (m_process->ReadMemory(m_dyld_all_image_infos_addr, buf, 4, error) == + 4) { + m_dyld_all_image_infos.version = data.GetU32(&offset); + // If anything in the high byte is set, we probably got the byte + // order incorrect (the process might not have it set correctly + // yet due to attaching to a program without a specified file). + if (m_dyld_all_image_infos.version & 0xff000000) { + // We have guessed the wrong byte order. Swap it and try + // reading the version again. + if (byte_order == eByteOrderLittle) + byte_order = eByteOrderBig; else - { - return false; - } + byte_order = eByteOrderLittle; + + data.SetByteOrder(byte_order); + offset = 0; + m_dyld_all_image_infos.version = data.GetU32(&offset); + } + } else { + return false; + } - const size_t count = (m_dyld_all_image_infos.version >= 11) ? count_v11 : count_v2; - - const size_t bytes_read = m_process->ReadMemory (m_dyld_all_image_infos_addr, buf, count, error); - if (bytes_read == count) - { - offset = 0; - m_dyld_all_image_infos.version = data.GetU32(&offset); - m_dyld_all_image_infos.dylib_info_count = data.GetU32(&offset); - m_dyld_all_image_infos.dylib_info_addr = data.GetPointer(&offset); - m_dyld_all_image_infos.notification = data.GetPointer(&offset); - m_dyld_all_image_infos.processDetachedFromSharedRegion = data.GetU8(&offset); - m_dyld_all_image_infos.libSystemInitialized = data.GetU8(&offset); - // Adjust for padding. - offset += addr_size - 2; - m_dyld_all_image_infos.dyldImageLoadAddress = data.GetPointer(&offset); - if (m_dyld_all_image_infos.version >= 11) - { - offset += addr_size * 8; - uint64_t dyld_all_image_infos_addr = data.GetPointer(&offset); - - // When we started, we were given the actual address of the all_image_infos - // struct (probably via TASK_DYLD_INFO) in memory - this address is stored in - // m_dyld_all_image_infos_addr and is the most accurate address we have. - - // We read the dyld_all_image_infos struct from memory; it contains its own address. - // If the address in the struct does not match the actual address, - // the dyld we're looking at has been loaded at a different location (slid) from - // where it intended to load. The addresses in the dyld_all_image_infos struct - // are the original, non-slid addresses, and need to be adjusted. Most importantly - // the address of dyld and the notification address need to be adjusted. - - if (dyld_all_image_infos_addr != m_dyld_all_image_infos_addr) - { - uint64_t image_infos_offset = dyld_all_image_infos_addr - m_dyld_all_image_infos.dyldImageLoadAddress; - uint64_t notification_offset = m_dyld_all_image_infos.notification - m_dyld_all_image_infos.dyldImageLoadAddress; - m_dyld_all_image_infos.dyldImageLoadAddress = m_dyld_all_image_infos_addr - image_infos_offset; - m_dyld_all_image_infos.notification = m_dyld_all_image_infos.dyldImageLoadAddress + notification_offset; - } - } - m_dyld_all_image_infos_stop_id = m_process->GetStopID(); - return true; + const size_t count = + (m_dyld_all_image_infos.version >= 11) ? count_v11 : count_v2; + + const size_t bytes_read = + m_process->ReadMemory(m_dyld_all_image_infos_addr, buf, count, error); + if (bytes_read == count) { + offset = 0; + m_dyld_all_image_infos.version = data.GetU32(&offset); + m_dyld_all_image_infos.dylib_info_count = data.GetU32(&offset); + m_dyld_all_image_infos.dylib_info_addr = data.GetPointer(&offset); + m_dyld_all_image_infos.notification = data.GetPointer(&offset); + m_dyld_all_image_infos.processDetachedFromSharedRegion = + data.GetU8(&offset); + m_dyld_all_image_infos.libSystemInitialized = data.GetU8(&offset); + // Adjust for padding. + offset += addr_size - 2; + m_dyld_all_image_infos.dyldImageLoadAddress = data.GetPointer(&offset); + if (m_dyld_all_image_infos.version >= 11) { + offset += addr_size * 8; + uint64_t dyld_all_image_infos_addr = data.GetPointer(&offset); + + // When we started, we were given the actual address of the + // all_image_infos + // struct (probably via TASK_DYLD_INFO) in memory - this address is + // stored in + // m_dyld_all_image_infos_addr and is the most accurate address we have. + + // We read the dyld_all_image_infos struct from memory; it contains its + // own address. + // If the address in the struct does not match the actual address, + // the dyld we're looking at has been loaded at a different location + // (slid) from + // where it intended to load. The addresses in the dyld_all_image_infos + // struct + // are the original, non-slid addresses, and need to be adjusted. Most + // importantly + // the address of dyld and the notification address need to be adjusted. + + if (dyld_all_image_infos_addr != m_dyld_all_image_infos_addr) { + uint64_t image_infos_offset = + dyld_all_image_infos_addr - + m_dyld_all_image_infos.dyldImageLoadAddress; + uint64_t notification_offset = + m_dyld_all_image_infos.notification - + m_dyld_all_image_infos.dyldImageLoadAddress; + m_dyld_all_image_infos.dyldImageLoadAddress = + m_dyld_all_image_infos_addr - image_infos_offset; + m_dyld_all_image_infos.notification = + m_dyld_all_image_infos.dyldImageLoadAddress + notification_offset; } + } + m_dyld_all_image_infos_stop_id = m_process->GetStopID(); + return true; } - return false; + } + return false; } +bool DynamicLoaderMacOSXDYLD::AddModulesUsingImageInfosAddress( + lldb::addr_t image_infos_addr, uint32_t image_infos_count) { + ImageInfo::collection image_infos; + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER)); + if (log) + log->Printf("Adding %d modules.\n", image_infos_count); -bool -DynamicLoaderMacOSXDYLD::AddModulesUsingImageInfosAddress (lldb::addr_t image_infos_addr, uint32_t image_infos_count) -{ - ImageInfo::collection image_infos; - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); - if (log) - log->Printf ("Adding %d modules.\n", image_infos_count); - - std::lock_guard<std::recursive_mutex> guard(m_mutex); - std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); - if (m_process->GetStopID() == m_dyld_image_infos_stop_id) - return true; + std::lock_guard<std::recursive_mutex> guard(m_mutex); + std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); + if (m_process->GetStopID() == m_dyld_image_infos_stop_id) + return true; - StructuredData::ObjectSP image_infos_json_sp = m_process->GetLoadedDynamicLibrariesInfos (image_infos_addr, image_infos_count); - if (image_infos_json_sp.get() - && image_infos_json_sp->GetAsDictionary() - && image_infos_json_sp->GetAsDictionary()->HasKey("images") - && image_infos_json_sp->GetAsDictionary()->GetValueForKey("images")->GetAsArray() - && image_infos_json_sp->GetAsDictionary()->GetValueForKey("images")->GetAsArray()->GetSize() == image_infos_count) - { - bool return_value = false; - if (JSONImageInformationIntoImageInfo (image_infos_json_sp, image_infos)) - { - UpdateSpecialBinariesFromNewImageInfos (image_infos); - return_value = AddModulesUsingImageInfos (image_infos); - } - m_dyld_image_infos_stop_id = m_process->GetStopID(); - return return_value; + StructuredData::ObjectSP image_infos_json_sp = + m_process->GetLoadedDynamicLibrariesInfos(image_infos_addr, + image_infos_count); + if (image_infos_json_sp.get() && image_infos_json_sp->GetAsDictionary() && + image_infos_json_sp->GetAsDictionary()->HasKey("images") && + image_infos_json_sp->GetAsDictionary() + ->GetValueForKey("images") + ->GetAsArray() && + image_infos_json_sp->GetAsDictionary() + ->GetValueForKey("images") + ->GetAsArray() + ->GetSize() == image_infos_count) { + bool return_value = false; + if (JSONImageInformationIntoImageInfo(image_infos_json_sp, image_infos)) { + UpdateSpecialBinariesFromNewImageInfos(image_infos); + return_value = AddModulesUsingImageInfos(image_infos); } - - if (!ReadImageInfos (image_infos_addr, image_infos_count, image_infos)) - return false; - - UpdateImageInfosHeaderAndLoadCommands (image_infos, image_infos_count, false); - bool return_value = AddModulesUsingImageInfos (image_infos); m_dyld_image_infos_stop_id = m_process->GetStopID(); return return_value; + } + + if (!ReadImageInfos(image_infos_addr, image_infos_count, image_infos)) + return false; + + UpdateImageInfosHeaderAndLoadCommands(image_infos, image_infos_count, false); + bool return_value = AddModulesUsingImageInfos(image_infos); + m_dyld_image_infos_stop_id = m_process->GetStopID(); + return return_value; } -bool -DynamicLoaderMacOSXDYLD::RemoveModulesUsingImageInfosAddress (lldb::addr_t image_infos_addr, uint32_t image_infos_count) -{ - ImageInfo::collection image_infos; - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); - - std::lock_guard<std::recursive_mutex> guard(m_mutex); - std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); - if (m_process->GetStopID() == m_dyld_image_infos_stop_id) - return true; +bool DynamicLoaderMacOSXDYLD::RemoveModulesUsingImageInfosAddress( + lldb::addr_t image_infos_addr, uint32_t image_infos_count) { + ImageInfo::collection image_infos; + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER)); - // First read in the image_infos for the removed modules, and their headers & load commands. - if (!ReadImageInfos (image_infos_addr, image_infos_count, image_infos)) - { - if (log) - log->PutCString ("Failed reading image infos array."); - return false; - } - + std::lock_guard<std::recursive_mutex> guard(m_mutex); + std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); + if (m_process->GetStopID() == m_dyld_image_infos_stop_id) + return true; + + // First read in the image_infos for the removed modules, and their headers & + // load commands. + if (!ReadImageInfos(image_infos_addr, image_infos_count, image_infos)) { if (log) - log->Printf ("Removing %d modules.", image_infos_count); - - ModuleList unloaded_module_list; - for (uint32_t idx = 0; idx < image_infos.size(); ++idx) - { - if (log) - { - log->Printf ("Removing module at address=0x%16.16" PRIx64 ".", image_infos[idx].address); - image_infos[idx].PutToLog (log); - } - - // Remove this image_infos from the m_all_image_infos. We do the comparison by address - // rather than by file spec because we can have many modules with the same "file spec" in the - // case that they are modules loaded from memory. - // - // Also copy over the uuid from the old entry to the removed entry so we can - // use it to lookup the module in the module list. - - ImageInfo::collection::iterator pos, end = m_dyld_image_infos.end(); - for (pos = m_dyld_image_infos.begin(); pos != end; pos++) - { - if (image_infos[idx].address == (*pos).address) - { - image_infos[idx].uuid = (*pos).uuid; - - // Add the module from this image_info to the "unloaded_module_list". We'll remove them all at - // one go later on. - - ModuleSP unload_image_module_sp (FindTargetModuleForImageInfo (image_infos[idx], false, NULL)); - if (unload_image_module_sp.get()) - { - // When we unload, be sure to use the image info from the old list, - // since that has sections correctly filled in. - UnloadModuleSections (unload_image_module_sp.get(), *pos); - unloaded_module_list.AppendIfNeeded (unload_image_module_sp); - } - else - { - if (log) - { - log->Printf ("Could not find module for unloading info entry:"); - image_infos[idx].PutToLog(log); - } - } - - // Then remove it from the m_dyld_image_infos: - - m_dyld_image_infos.erase(pos); - break; - } - } - - if (pos == end) - { - if (log) - { - log->Printf ("Could not find image_info entry for unloading image:"); - image_infos[idx].PutToLog(log); - } - } + log->PutCString("Failed reading image infos array."); + return false; + } + + if (log) + log->Printf("Removing %d modules.", image_infos_count); + + ModuleList unloaded_module_list; + for (uint32_t idx = 0; idx < image_infos.size(); ++idx) { + if (log) { + log->Printf("Removing module at address=0x%16.16" PRIx64 ".", + image_infos[idx].address); + image_infos[idx].PutToLog(log); } - if (unloaded_module_list.GetSize() > 0) - { - if (log) - { - log->PutCString("Unloaded:"); - unloaded_module_list.LogUUIDAndPaths (log, "DynamicLoaderMacOSXDYLD::ModulesDidUnload"); + + // Remove this image_infos from the m_all_image_infos. We do the comparison + // by address + // rather than by file spec because we can have many modules with the same + // "file spec" in the + // case that they are modules loaded from memory. + // + // Also copy over the uuid from the old entry to the removed entry so we can + // use it to lookup the module in the module list. + + ImageInfo::collection::iterator pos, end = m_dyld_image_infos.end(); + for (pos = m_dyld_image_infos.begin(); pos != end; pos++) { + if (image_infos[idx].address == (*pos).address) { + image_infos[idx].uuid = (*pos).uuid; + + // Add the module from this image_info to the "unloaded_module_list". + // We'll remove them all at + // one go later on. + + ModuleSP unload_image_module_sp( + FindTargetModuleForImageInfo(image_infos[idx], false, NULL)); + if (unload_image_module_sp.get()) { + // When we unload, be sure to use the image info from the old list, + // since that has sections correctly filled in. + UnloadModuleSections(unload_image_module_sp.get(), *pos); + unloaded_module_list.AppendIfNeeded(unload_image_module_sp); + } else { + if (log) { + log->Printf("Could not find module for unloading info entry:"); + image_infos[idx].PutToLog(log); + } } - m_process->GetTarget().GetImages().Remove (unloaded_module_list); + + // Then remove it from the m_dyld_image_infos: + + m_dyld_image_infos.erase(pos); + break; + } } - m_dyld_image_infos_stop_id = m_process->GetStopID(); - return true; -} -bool -DynamicLoaderMacOSXDYLD::ReadImageInfos (lldb::addr_t image_infos_addr, - uint32_t image_infos_count, - ImageInfo::collection &image_infos) -{ - std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); - const ByteOrder endian = GetByteOrderFromMagic (m_dyld.header.magic); - const uint32_t addr_size = m_dyld.GetAddressByteSize(); - - image_infos.resize(image_infos_count); - const size_t count = image_infos.size() * 3 * addr_size; - DataBufferHeap info_data(count, 0); - Error error; - const size_t bytes_read = m_process->ReadMemory (image_infos_addr, - info_data.GetBytes(), - info_data.GetByteSize(), - error); - if (bytes_read == count) - { - lldb::offset_t info_data_offset = 0; - DataExtractor info_data_ref(info_data.GetBytes(), info_data.GetByteSize(), endian, addr_size); - for (size_t i = 0; i < image_infos.size() && info_data_ref.ValidOffset(info_data_offset); i++) - { - image_infos[i].address = info_data_ref.GetPointer(&info_data_offset); - lldb::addr_t path_addr = info_data_ref.GetPointer(&info_data_offset); - image_infos[i].mod_date = info_data_ref.GetPointer(&info_data_offset); - - char raw_path[PATH_MAX]; - m_process->ReadCStringFromMemory (path_addr, raw_path, sizeof(raw_path), error); - // don't resolve the path - if (error.Success()) - { - const bool resolve_path = false; - image_infos[i].file_spec.SetFile(raw_path, resolve_path); - } - } - return true; + if (pos == end) { + if (log) { + log->Printf("Could not find image_info entry for unloading image:"); + image_infos[idx].PutToLog(log); + } } - else - { - return false; + } + if (unloaded_module_list.GetSize() > 0) { + if (log) { + log->PutCString("Unloaded:"); + unloaded_module_list.LogUUIDAndPaths( + log, "DynamicLoaderMacOSXDYLD::ModulesDidUnload"); } + m_process->GetTarget().GetImages().Remove(unloaded_module_list); + } + m_dyld_image_infos_stop_id = m_process->GetStopID(); + return true; +} + +bool DynamicLoaderMacOSXDYLD::ReadImageInfos( + lldb::addr_t image_infos_addr, uint32_t image_infos_count, + ImageInfo::collection &image_infos) { + std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); + const ByteOrder endian = GetByteOrderFromMagic(m_dyld.header.magic); + const uint32_t addr_size = m_dyld.GetAddressByteSize(); + + image_infos.resize(image_infos_count); + const size_t count = image_infos.size() * 3 * addr_size; + DataBufferHeap info_data(count, 0); + Error error; + const size_t bytes_read = m_process->ReadMemory( + image_infos_addr, info_data.GetBytes(), info_data.GetByteSize(), error); + if (bytes_read == count) { + lldb::offset_t info_data_offset = 0; + DataExtractor info_data_ref(info_data.GetBytes(), info_data.GetByteSize(), + endian, addr_size); + for (size_t i = 0; + i < image_infos.size() && info_data_ref.ValidOffset(info_data_offset); + i++) { + image_infos[i].address = info_data_ref.GetPointer(&info_data_offset); + lldb::addr_t path_addr = info_data_ref.GetPointer(&info_data_offset); + image_infos[i].mod_date = info_data_ref.GetPointer(&info_data_offset); + + char raw_path[PATH_MAX]; + m_process->ReadCStringFromMemory(path_addr, raw_path, sizeof(raw_path), + error); + // don't resolve the path + if (error.Success()) { + const bool resolve_path = false; + image_infos[i].file_spec.SetFile(raw_path, resolve_path); + } + } + return true; + } else { + return false; + } } //---------------------------------------------------------------------- @@ -759,74 +720,68 @@ DynamicLoaderMacOSXDYLD::ReadImageInfos (lldb::addr_t image_infos_addr, // we're reading the dyld infos. Return true if we actually read anything, // and false otherwise. //---------------------------------------------------------------------- -bool -DynamicLoaderMacOSXDYLD::InitializeFromAllImageInfos () -{ - Log *log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); - - std::lock_guard<std::recursive_mutex> guard(m_mutex); - std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); - if (m_process->GetStopID() == m_dyld_image_infos_stop_id - || m_dyld_image_infos.size() != 0) - return false; - - if (ReadAllImageInfosStructure ()) - { - // Nothing to load or unload? - if (m_dyld_all_image_infos.dylib_info_count == 0) - return true; - - if (m_dyld_all_image_infos.dylib_info_addr == 0) - { - // DYLD is updating the images now. So we should say we have no images, and then we'll - // figure it out when we hit the added breakpoint. - return false; - } - else - { - if (!AddModulesUsingImageInfosAddress (m_dyld_all_image_infos.dylib_info_addr, - m_dyld_all_image_infos.dylib_info_count)) - { - DEBUG_PRINTF("%s", "unable to read all data for all_dylib_infos."); - m_dyld_image_infos.clear(); - } - } +bool DynamicLoaderMacOSXDYLD::InitializeFromAllImageInfos() { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER)); - // Now we have one more bit of business. If there is a library left in the images for our target that - // doesn't have a load address, then it must be something that we were expecting to load (for instance we - // read a load command for it) but it didn't in fact load - probably because DYLD_*_PATH pointed - // to an equivalent version. We don't want it to stay in the target's module list or it will confuse - // us, so unload it here. - Target &target = m_process->GetTarget(); - const ModuleList &target_modules = target.GetImages(); - ModuleList not_loaded_modules; - std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex()); - - size_t num_modules = target_modules.GetSize(); - for (size_t i = 0; i < num_modules; i++) - { - ModuleSP module_sp = target_modules.GetModuleAtIndexUnlocked (i); - if (!module_sp->IsLoadedInTarget (&target)) - { - if (log) - { - StreamString s; - module_sp->GetDescription (&s); - log->Printf ("Unloading pre-run module: %s.", s.GetData ()); - } - not_loaded_modules.Append (module_sp); - } - } - - if (not_loaded_modules.GetSize() != 0) - { - target.GetImages().Remove(not_loaded_modules); + std::lock_guard<std::recursive_mutex> guard(m_mutex); + std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); + if (m_process->GetStopID() == m_dyld_image_infos_stop_id || + m_dyld_image_infos.size() != 0) + return false; + + if (ReadAllImageInfosStructure()) { + // Nothing to load or unload? + if (m_dyld_all_image_infos.dylib_info_count == 0) + return true; + + if (m_dyld_all_image_infos.dylib_info_addr == 0) { + // DYLD is updating the images now. So we should say we have no images, + // and then we'll + // figure it out when we hit the added breakpoint. + return false; + } else { + if (!AddModulesUsingImageInfosAddress( + m_dyld_all_image_infos.dylib_info_addr, + m_dyld_all_image_infos.dylib_info_count)) { + DEBUG_PRINTF("%s", "unable to read all data for all_dylib_infos."); + m_dyld_image_infos.clear(); + } + } + + // Now we have one more bit of business. If there is a library left in the + // images for our target that + // doesn't have a load address, then it must be something that we were + // expecting to load (for instance we + // read a load command for it) but it didn't in fact load - probably because + // DYLD_*_PATH pointed + // to an equivalent version. We don't want it to stay in the target's + // module list or it will confuse + // us, so unload it here. + Target &target = m_process->GetTarget(); + const ModuleList &target_modules = target.GetImages(); + ModuleList not_loaded_modules; + std::lock_guard<std::recursive_mutex> guard(target_modules.GetMutex()); + + size_t num_modules = target_modules.GetSize(); + for (size_t i = 0; i < num_modules; i++) { + ModuleSP module_sp = target_modules.GetModuleAtIndexUnlocked(i); + if (!module_sp->IsLoadedInTarget(&target)) { + if (log) { + StreamString s; + module_sp->GetDescription(&s); + log->Printf("Unloading pre-run module: %s.", s.GetData()); } + not_loaded_modules.Append(module_sp); + } + } - return true; + if (not_loaded_modules.GetSize() != 0) { + target.GetImages().Remove(not_loaded_modules); } - else - return false; + + return true; + } else + return false; } //---------------------------------------------------------------------- @@ -835,166 +790,161 @@ DynamicLoaderMacOSXDYLD::InitializeFromAllImageInfos () // // Returns true if we succeed, false if we fail for any reason. //---------------------------------------------------------------------- -bool -DynamicLoaderMacOSXDYLD::ReadMachHeader (lldb::addr_t addr, llvm::MachO::mach_header *header, DataExtractor *load_command_data) -{ - DataBufferHeap header_bytes(sizeof(llvm::MachO::mach_header), 0); - Error error; - size_t bytes_read = m_process->ReadMemory (addr, - header_bytes.GetBytes(), - header_bytes.GetByteSize(), - error); - if (bytes_read == sizeof(llvm::MachO::mach_header)) - { - lldb::offset_t offset = 0; - ::memset (header, 0, sizeof(llvm::MachO::mach_header)); - - // Get the magic byte unswapped so we can figure out what we are dealing with - DataExtractor data(header_bytes.GetBytes(), header_bytes.GetByteSize(), endian::InlHostByteOrder(), 4); - header->magic = data.GetU32(&offset); - lldb::addr_t load_cmd_addr = addr; - data.SetByteOrder(DynamicLoaderMacOSXDYLD::GetByteOrderFromMagic(header->magic)); - switch (header->magic) - { - case llvm::MachO::MH_MAGIC: - case llvm::MachO::MH_CIGAM: - data.SetAddressByteSize(4); - load_cmd_addr += sizeof(llvm::MachO::mach_header); - break; - - case llvm::MachO::MH_MAGIC_64: - case llvm::MachO::MH_CIGAM_64: - data.SetAddressByteSize(8); - load_cmd_addr += sizeof(llvm::MachO::mach_header_64); - break; - - default: - return false; - } - - // Read the rest of dyld's mach header - if (data.GetU32(&offset, &header->cputype, (sizeof(llvm::MachO::mach_header)/sizeof(uint32_t)) - 1)) - { - if (load_command_data == NULL) - return true; // We were able to read the mach_header and weren't asked to read the load command bytes - - DataBufferSP load_cmd_data_sp(new DataBufferHeap(header->sizeofcmds, 0)); - - size_t load_cmd_bytes_read = m_process->ReadMemory (load_cmd_addr, - load_cmd_data_sp->GetBytes(), - load_cmd_data_sp->GetByteSize(), - error); - - if (load_cmd_bytes_read == header->sizeofcmds) - { - // Set the load command data and also set the correct endian - // swap settings and the correct address size - load_command_data->SetData(load_cmd_data_sp, 0, header->sizeofcmds); - load_command_data->SetByteOrder(data.GetByteOrder()); - load_command_data->SetAddressByteSize(data.GetAddressByteSize()); - return true; // We successfully read the mach_header and the load command data - } +bool DynamicLoaderMacOSXDYLD::ReadMachHeader(lldb::addr_t addr, + llvm::MachO::mach_header *header, + DataExtractor *load_command_data) { + DataBufferHeap header_bytes(sizeof(llvm::MachO::mach_header), 0); + Error error; + size_t bytes_read = m_process->ReadMemory(addr, header_bytes.GetBytes(), + header_bytes.GetByteSize(), error); + if (bytes_read == sizeof(llvm::MachO::mach_header)) { + lldb::offset_t offset = 0; + ::memset(header, 0, sizeof(llvm::MachO::mach_header)); + + // Get the magic byte unswapped so we can figure out what we are dealing + // with + DataExtractor data(header_bytes.GetBytes(), header_bytes.GetByteSize(), + endian::InlHostByteOrder(), 4); + header->magic = data.GetU32(&offset); + lldb::addr_t load_cmd_addr = addr; + data.SetByteOrder( + DynamicLoaderMacOSXDYLD::GetByteOrderFromMagic(header->magic)); + switch (header->magic) { + case llvm::MachO::MH_MAGIC: + case llvm::MachO::MH_CIGAM: + data.SetAddressByteSize(4); + load_cmd_addr += sizeof(llvm::MachO::mach_header); + break; + + case llvm::MachO::MH_MAGIC_64: + case llvm::MachO::MH_CIGAM_64: + data.SetAddressByteSize(8); + load_cmd_addr += sizeof(llvm::MachO::mach_header_64); + break; + + default: + return false; + } - return false; // We weren't able to read the load command data - } + // Read the rest of dyld's mach header + if (data.GetU32(&offset, &header->cputype, + (sizeof(llvm::MachO::mach_header) / sizeof(uint32_t)) - + 1)) { + if (load_command_data == NULL) + return true; // We were able to read the mach_header and weren't asked + // to read the load command bytes + + DataBufferSP load_cmd_data_sp(new DataBufferHeap(header->sizeofcmds, 0)); + + size_t load_cmd_bytes_read = + m_process->ReadMemory(load_cmd_addr, load_cmd_data_sp->GetBytes(), + load_cmd_data_sp->GetByteSize(), error); + + if (load_cmd_bytes_read == header->sizeofcmds) { + // Set the load command data and also set the correct endian + // swap settings and the correct address size + load_command_data->SetData(load_cmd_data_sp, 0, header->sizeofcmds); + load_command_data->SetByteOrder(data.GetByteOrder()); + load_command_data->SetAddressByteSize(data.GetAddressByteSize()); + return true; // We successfully read the mach_header and the load + // command data + } + + return false; // We weren't able to read the load command data } - return false; // We failed the read the mach_header + } + return false; // We failed the read the mach_header } - //---------------------------------------------------------------------- // Parse the load commands for an image //---------------------------------------------------------------------- -uint32_t -DynamicLoaderMacOSXDYLD::ParseLoadCommands (const DataExtractor& data, ImageInfo& dylib_info, FileSpec *lc_id_dylinker) -{ - lldb::offset_t offset = 0; - uint32_t cmd_idx; - Segment segment; - dylib_info.Clear (true); - - for (cmd_idx = 0; cmd_idx < dylib_info.header.ncmds; cmd_idx++) - { - // Clear out any load command specific data from DYLIB_INFO since - // we are about to read it. - - if (data.ValidOffsetForDataOfSize (offset, sizeof(llvm::MachO::load_command))) - { - llvm::MachO::load_command load_cmd; - lldb::offset_t load_cmd_offset = offset; - load_cmd.cmd = data.GetU32 (&offset); - load_cmd.cmdsize = data.GetU32 (&offset); - switch (load_cmd.cmd) - { - case llvm::MachO::LC_SEGMENT: - { - segment.name.SetTrimmedCStringWithLength ((const char *)data.GetData(&offset, 16), 16); - // We are putting 4 uint32_t values 4 uint64_t values so - // we have to use multiple 32 bit gets below. - segment.vmaddr = data.GetU32 (&offset); - segment.vmsize = data.GetU32 (&offset); - segment.fileoff = data.GetU32 (&offset); - segment.filesize = data.GetU32 (&offset); - // Extract maxprot, initprot, nsects and flags all at once - data.GetU32(&offset, &segment.maxprot, 4); - dylib_info.segments.push_back (segment); - } - break; - - case llvm::MachO::LC_SEGMENT_64: - { - segment.name.SetTrimmedCStringWithLength ((const char *)data.GetData(&offset, 16), 16); - // Extract vmaddr, vmsize, fileoff, and filesize all at once - data.GetU64(&offset, &segment.vmaddr, 4); - // Extract maxprot, initprot, nsects and flags all at once - data.GetU32(&offset, &segment.maxprot, 4); - dylib_info.segments.push_back (segment); - } - break; - - case llvm::MachO::LC_ID_DYLINKER: - if (lc_id_dylinker) - { - const lldb::offset_t name_offset = load_cmd_offset + data.GetU32 (&offset); - const char *path = data.PeekCStr (name_offset); - lc_id_dylinker->SetFile (path, true); - } - break; - - case llvm::MachO::LC_UUID: - dylib_info.uuid.SetBytes(data.GetData (&offset, 16)); - break; - - default: - break; - } - // Set offset to be the beginning of the next load command. - offset = load_cmd_offset + load_cmd.cmdsize; +uint32_t DynamicLoaderMacOSXDYLD::ParseLoadCommands(const DataExtractor &data, + ImageInfo &dylib_info, + FileSpec *lc_id_dylinker) { + lldb::offset_t offset = 0; + uint32_t cmd_idx; + Segment segment; + dylib_info.Clear(true); + + for (cmd_idx = 0; cmd_idx < dylib_info.header.ncmds; cmd_idx++) { + // Clear out any load command specific data from DYLIB_INFO since + // we are about to read it. + + if (data.ValidOffsetForDataOfSize(offset, + sizeof(llvm::MachO::load_command))) { + llvm::MachO::load_command load_cmd; + lldb::offset_t load_cmd_offset = offset; + load_cmd.cmd = data.GetU32(&offset); + load_cmd.cmdsize = data.GetU32(&offset); + switch (load_cmd.cmd) { + case llvm::MachO::LC_SEGMENT: { + segment.name.SetTrimmedCStringWithLength( + (const char *)data.GetData(&offset, 16), 16); + // We are putting 4 uint32_t values 4 uint64_t values so + // we have to use multiple 32 bit gets below. + segment.vmaddr = data.GetU32(&offset); + segment.vmsize = data.GetU32(&offset); + segment.fileoff = data.GetU32(&offset); + segment.filesize = data.GetU32(&offset); + // Extract maxprot, initprot, nsects and flags all at once + data.GetU32(&offset, &segment.maxprot, 4); + dylib_info.segments.push_back(segment); + } break; + + case llvm::MachO::LC_SEGMENT_64: { + segment.name.SetTrimmedCStringWithLength( + (const char *)data.GetData(&offset, 16), 16); + // Extract vmaddr, vmsize, fileoff, and filesize all at once + data.GetU64(&offset, &segment.vmaddr, 4); + // Extract maxprot, initprot, nsects and flags all at once + data.GetU32(&offset, &segment.maxprot, 4); + dylib_info.segments.push_back(segment); + } break; + + case llvm::MachO::LC_ID_DYLINKER: + if (lc_id_dylinker) { + const lldb::offset_t name_offset = + load_cmd_offset + data.GetU32(&offset); + const char *path = data.PeekCStr(name_offset); + lc_id_dylinker->SetFile(path, true); } + break; + + case llvm::MachO::LC_UUID: + dylib_info.uuid.SetBytes(data.GetData(&offset, 16)); + break; + + default: + break; + } + // Set offset to be the beginning of the next load command. + offset = load_cmd_offset + load_cmd.cmdsize; } - - // All sections listed in the dyld image info structure will all - // either be fixed up already, or they will all be off by a single - // slide amount that is determined by finding the first segment - // that is at file offset zero which also has bytes (a file size - // that is greater than zero) in the object file. - - // Determine the slide amount (if any) - const size_t num_sections = dylib_info.segments.size(); - for (size_t i = 0; i < num_sections; ++i) - { - // Iterate through the object file sections to find the - // first section that starts of file offset zero and that - // has bytes in the file... - if ((dylib_info.segments[i].fileoff == 0 && dylib_info.segments[i].filesize > 0) || (dylib_info.segments[i].name == ConstString("__TEXT"))) - { - dylib_info.slide = dylib_info.address - dylib_info.segments[i].vmaddr; - // We have found the slide amount, so we can exit - // this for loop. - break; - } + } + + // All sections listed in the dyld image info structure will all + // either be fixed up already, or they will all be off by a single + // slide amount that is determined by finding the first segment + // that is at file offset zero which also has bytes (a file size + // that is greater than zero) in the object file. + + // Determine the slide amount (if any) + const size_t num_sections = dylib_info.segments.size(); + for (size_t i = 0; i < num_sections; ++i) { + // Iterate through the object file sections to find the + // first section that starts of file offset zero and that + // has bytes in the file... + if ((dylib_info.segments[i].fileoff == 0 && + dylib_info.segments[i].filesize > 0) || + (dylib_info.segments[i].name == ConstString("__TEXT"))) { + dylib_info.slide = dylib_info.address - dylib_info.segments[i].vmaddr; + // We have found the slide amount, so we can exit + // this for loop. + break; } - return cmd_idx; + } + return cmd_idx; } //---------------------------------------------------------------------- @@ -1002,313 +952,278 @@ DynamicLoaderMacOSXDYLD::ParseLoadCommands (const DataExtractor& data, ImageInfo // _dyld_all_image_infos structure points to and cache the results. //---------------------------------------------------------------------- -void -DynamicLoaderMacOSXDYLD::UpdateImageInfosHeaderAndLoadCommands(ImageInfo::collection &image_infos, - uint32_t infos_count, - bool update_executable) -{ - uint32_t exe_idx = UINT32_MAX; - // Read any UUID values that we can get - for (uint32_t i = 0; i < infos_count; i++) - { - if (!image_infos[i].UUIDValid()) - { - DataExtractor data; // Load command data - if (!ReadMachHeader (image_infos[i].address, &image_infos[i].header, &data)) - continue; - - ParseLoadCommands (data, image_infos[i], NULL); - - if (image_infos[i].header.filetype == llvm::MachO::MH_EXECUTE) - exe_idx = i; - - } +void DynamicLoaderMacOSXDYLD::UpdateImageInfosHeaderAndLoadCommands( + ImageInfo::collection &image_infos, uint32_t infos_count, + bool update_executable) { + uint32_t exe_idx = UINT32_MAX; + // Read any UUID values that we can get + for (uint32_t i = 0; i < infos_count; i++) { + if (!image_infos[i].UUIDValid()) { + DataExtractor data; // Load command data + if (!ReadMachHeader(image_infos[i].address, &image_infos[i].header, + &data)) + continue; + + ParseLoadCommands(data, image_infos[i], NULL); + + if (image_infos[i].header.filetype == llvm::MachO::MH_EXECUTE) + exe_idx = i; } - - Target &target = m_process->GetTarget(); - - if (exe_idx < image_infos.size()) - { - const bool can_create = true; - ModuleSP exe_module_sp (FindTargetModuleForImageInfo (image_infos[exe_idx], can_create, NULL)); - - if (exe_module_sp) - { - UpdateImageLoadAddress (exe_module_sp.get(), image_infos[exe_idx]); - - if (exe_module_sp.get() != target.GetExecutableModulePointer()) - { - // Don't load dependent images since we are in dyld where we will know - // and find out about all images that are loaded. Also when setting the - // executable module, it will clear the targets module list, and if we - // have an in memory dyld module, it will get removed from the list - // so we will need to add it back after setting the executable module, - // so we first try and see if we already have a weak pointer to the - // dyld module, make it into a shared pointer, then add the executable, - // then re-add it back to make sure it is always in the list. - ModuleSP dyld_module_sp(GetDYLDModule ()); - - const bool get_dependent_images = false; - m_process->GetTarget().SetExecutableModule (exe_module_sp, - get_dependent_images); - - if (dyld_module_sp) - { - if(target.GetImages().AppendIfNeeded (dyld_module_sp)) - { - std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); - - // Also add it to the section list. - UpdateImageLoadAddress(dyld_module_sp.get(), m_dyld); - } - } - } + } + + Target &target = m_process->GetTarget(); + + if (exe_idx < image_infos.size()) { + const bool can_create = true; + ModuleSP exe_module_sp( + FindTargetModuleForImageInfo(image_infos[exe_idx], can_create, NULL)); + + if (exe_module_sp) { + UpdateImageLoadAddress(exe_module_sp.get(), image_infos[exe_idx]); + + if (exe_module_sp.get() != target.GetExecutableModulePointer()) { + // Don't load dependent images since we are in dyld where we will know + // and find out about all images that are loaded. Also when setting the + // executable module, it will clear the targets module list, and if we + // have an in memory dyld module, it will get removed from the list + // so we will need to add it back after setting the executable module, + // so we first try and see if we already have a weak pointer to the + // dyld module, make it into a shared pointer, then add the executable, + // then re-add it back to make sure it is always in the list. + ModuleSP dyld_module_sp(GetDYLDModule()); + + const bool get_dependent_images = false; + m_process->GetTarget().SetExecutableModule(exe_module_sp, + get_dependent_images); + + if (dyld_module_sp) { + if (target.GetImages().AppendIfNeeded(dyld_module_sp)) { + std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); + + // Also add it to the section list. + UpdateImageLoadAddress(dyld_module_sp.get(), m_dyld); + } } + } } + } } - //---------------------------------------------------------------------- // Dump the _dyld_all_image_infos members and all current image infos // that we have parsed to the file handle provided. //---------------------------------------------------------------------- -void -DynamicLoaderMacOSXDYLD::PutToLog(Log *log) const -{ - if (log == NULL) - return; - - std::lock_guard<std::recursive_mutex> guard(m_mutex); - std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); - log->Printf("dyld_all_image_infos = { version=%d, count=%d, addr=0x%8.8" PRIx64 ", notify=0x%8.8" PRIx64 " }", - m_dyld_all_image_infos.version, - m_dyld_all_image_infos.dylib_info_count, - (uint64_t)m_dyld_all_image_infos.dylib_info_addr, - (uint64_t)m_dyld_all_image_infos.notification); - size_t i; - const size_t count = m_dyld_image_infos.size(); - if (count > 0) - { - log->PutCString("Loaded:"); - for (i = 0; i<count; i++) - m_dyld_image_infos[i].PutToLog(log); - } -} +void DynamicLoaderMacOSXDYLD::PutToLog(Log *log) const { + if (log == NULL) + return; -bool -DynamicLoaderMacOSXDYLD::SetNotificationBreakpoint () -{ - DEBUG_PRINTF("DynamicLoaderMacOSXDYLD::%s() process state = %s\n", __FUNCTION__, StateAsCString(m_process->GetState())); - if (m_break_id == LLDB_INVALID_BREAK_ID) - { - if (m_dyld_all_image_infos.notification != LLDB_INVALID_ADDRESS) - { - Address so_addr; - // Set the notification breakpoint and install a breakpoint - // callback function that will get called each time the - // breakpoint gets hit. We will use this to track when shared - // libraries get loaded/unloaded. - bool resolved = m_process->GetTarget().ResolveLoadAddress(m_dyld_all_image_infos.notification, so_addr); - if (!resolved) - { - ModuleSP dyld_module_sp = GetDYLDModule(); - if (dyld_module_sp) - { - std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); - - UpdateImageLoadAddress (dyld_module_sp.get(), m_dyld); - resolved = m_process->GetTarget().ResolveLoadAddress(m_dyld_all_image_infos.notification, so_addr); - } - } + std::lock_guard<std::recursive_mutex> guard(m_mutex); + std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); + log->Printf( + "dyld_all_image_infos = { version=%d, count=%d, addr=0x%8.8" PRIx64 + ", notify=0x%8.8" PRIx64 " }", + m_dyld_all_image_infos.version, m_dyld_all_image_infos.dylib_info_count, + (uint64_t)m_dyld_all_image_infos.dylib_info_addr, + (uint64_t)m_dyld_all_image_infos.notification); + size_t i; + const size_t count = m_dyld_image_infos.size(); + if (count > 0) { + log->PutCString("Loaded:"); + for (i = 0; i < count; i++) + m_dyld_image_infos[i].PutToLog(log); + } +} - if (resolved) - { - Breakpoint *dyld_break = m_process->GetTarget().CreateBreakpoint (so_addr, true, false).get(); - dyld_break->SetCallback (DynamicLoaderMacOSXDYLD::NotifyBreakpointHit, this, true); - dyld_break->SetBreakpointKind ("shared-library-event"); - m_break_id = dyld_break->GetID(); - } +bool DynamicLoaderMacOSXDYLD::SetNotificationBreakpoint() { + DEBUG_PRINTF("DynamicLoaderMacOSXDYLD::%s() process state = %s\n", + __FUNCTION__, StateAsCString(m_process->GetState())); + if (m_break_id == LLDB_INVALID_BREAK_ID) { + if (m_dyld_all_image_infos.notification != LLDB_INVALID_ADDRESS) { + Address so_addr; + // Set the notification breakpoint and install a breakpoint + // callback function that will get called each time the + // breakpoint gets hit. We will use this to track when shared + // libraries get loaded/unloaded. + bool resolved = m_process->GetTarget().ResolveLoadAddress( + m_dyld_all_image_infos.notification, so_addr); + if (!resolved) { + ModuleSP dyld_module_sp = GetDYLDModule(); + if (dyld_module_sp) { + std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); + + UpdateImageLoadAddress(dyld_module_sp.get(), m_dyld); + resolved = m_process->GetTarget().ResolveLoadAddress( + m_dyld_all_image_infos.notification, so_addr); } + } + + if (resolved) { + Breakpoint *dyld_break = + m_process->GetTarget().CreateBreakpoint(so_addr, true, false).get(); + dyld_break->SetCallback(DynamicLoaderMacOSXDYLD::NotifyBreakpointHit, + this, true); + dyld_break->SetBreakpointKind("shared-library-event"); + m_break_id = dyld_break->GetID(); + } } - return m_break_id != LLDB_INVALID_BREAK_ID; + } + return m_break_id != LLDB_INVALID_BREAK_ID; } -Error -DynamicLoaderMacOSXDYLD::CanLoadImage () -{ - Error error; - // In order for us to tell if we can load a shared library we verify that - // the dylib_info_addr isn't zero (which means no shared libraries have - // been set yet, or dyld is currently mucking with the shared library list). - if (ReadAllImageInfosStructure ()) - { - // TODO: also check the _dyld_global_lock_held variable in libSystem.B.dylib? - // TODO: check the malloc lock? - // TODO: check the objective C lock? - if (m_dyld_all_image_infos.dylib_info_addr != 0) - return error; // Success - } - - error.SetErrorString("unsafe to load or unload shared libraries"); - return error; +Error DynamicLoaderMacOSXDYLD::CanLoadImage() { + Error error; + // In order for us to tell if we can load a shared library we verify that + // the dylib_info_addr isn't zero (which means no shared libraries have + // been set yet, or dyld is currently mucking with the shared library list). + if (ReadAllImageInfosStructure()) { + // TODO: also check the _dyld_global_lock_held variable in + // libSystem.B.dylib? + // TODO: check the malloc lock? + // TODO: check the objective C lock? + if (m_dyld_all_image_infos.dylib_info_addr != 0) + return error; // Success + } + + error.SetErrorString("unsafe to load or unload shared libraries"); + return error; } -bool -DynamicLoaderMacOSXDYLD::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) - { - addr_t all_image_infos = m_process->GetImageInfoAddress(); - - // The address returned by GetImageInfoAddress may be the address of dyld (don't want) - // or it may be the address of the dyld_all_image_infos structure (want). The first four - // bytes will be either the version field (all_image_infos) or a Mach-O file magic constant. - // Version 13 and higher of dyld_all_image_infos is required to get the sharedCacheUUID field. - - Error err; - uint32_t version_or_magic = m_process->ReadUnsignedIntegerFromMemory (all_image_infos, 4, -1, err); - if (version_or_magic != static_cast<uint32_t>(-1) - && version_or_magic != llvm::MachO::MH_MAGIC - && version_or_magic != llvm::MachO::MH_CIGAM - && version_or_magic != llvm::MachO::MH_MAGIC_64 - && version_or_magic != llvm::MachO::MH_CIGAM_64 - && version_or_magic >= 13) - { - addr_t sharedCacheUUID_address = LLDB_INVALID_ADDRESS; - int wordsize = m_process->GetAddressByteSize(); - if (wordsize == 8) - { - sharedCacheUUID_address = all_image_infos + 160; // sharedCacheUUID <mach-o/dyld_images.h> - } - if (wordsize == 4) - { - sharedCacheUUID_address = all_image_infos + 84; // sharedCacheUUID <mach-o/dyld_images.h> - } - if (sharedCacheUUID_address != LLDB_INVALID_ADDRESS) - { - uuid_t shared_cache_uuid; - if (m_process->ReadMemory (sharedCacheUUID_address, shared_cache_uuid, sizeof (uuid_t), err) == sizeof (uuid_t)) - { - uuid.SetBytes (shared_cache_uuid); - if (uuid.IsValid ()) - { - using_shared_cache = eLazyBoolYes; - } - } - - if (version_or_magic >= 15) - { - // The sharedCacheBaseAddress field is the next one in the dyld_all_image_infos struct. - addr_t sharedCacheBaseAddr_address = sharedCacheUUID_address + 16; - Error error; - base_address = m_process->ReadUnsignedIntegerFromMemory (sharedCacheBaseAddr_address, wordsize, LLDB_INVALID_ADDRESS, error); - if (error.Fail()) - base_address = LLDB_INVALID_ADDRESS; - } - - return true; - } +bool DynamicLoaderMacOSXDYLD::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) { + addr_t all_image_infos = m_process->GetImageInfoAddress(); + + // The address returned by GetImageInfoAddress may be the address of dyld + // (don't want) + // or it may be the address of the dyld_all_image_infos structure (want). + // The first four + // bytes will be either the version field (all_image_infos) or a Mach-O file + // magic constant. + // Version 13 and higher of dyld_all_image_infos is required to get the + // sharedCacheUUID field. + + Error err; + uint32_t version_or_magic = + m_process->ReadUnsignedIntegerFromMemory(all_image_infos, 4, -1, err); + if (version_or_magic != static_cast<uint32_t>(-1) && + version_or_magic != llvm::MachO::MH_MAGIC && + version_or_magic != llvm::MachO::MH_CIGAM && + version_or_magic != llvm::MachO::MH_MAGIC_64 && + version_or_magic != llvm::MachO::MH_CIGAM_64 && + version_or_magic >= 13) { + addr_t sharedCacheUUID_address = LLDB_INVALID_ADDRESS; + int wordsize = m_process->GetAddressByteSize(); + if (wordsize == 8) { + sharedCacheUUID_address = + all_image_infos + 160; // sharedCacheUUID <mach-o/dyld_images.h> + } + if (wordsize == 4) { + sharedCacheUUID_address = + all_image_infos + 84; // sharedCacheUUID <mach-o/dyld_images.h> + } + if (sharedCacheUUID_address != LLDB_INVALID_ADDRESS) { + uuid_t shared_cache_uuid; + if (m_process->ReadMemory(sharedCacheUUID_address, shared_cache_uuid, + sizeof(uuid_t), err) == sizeof(uuid_t)) { + uuid.SetBytes(shared_cache_uuid); + if (uuid.IsValid()) { + using_shared_cache = eLazyBoolYes; + } + } - // - // add - // NB: sharedCacheBaseAddress is the next field in dyld_all_image_infos after - // sharedCacheUUID -- that is, 16 bytes after it, if we wanted to fetch it. + if (version_or_magic >= 15) { + // The sharedCacheBaseAddress field is the next one in the + // dyld_all_image_infos struct. + addr_t sharedCacheBaseAddr_address = sharedCacheUUID_address + 16; + Error error; + base_address = m_process->ReadUnsignedIntegerFromMemory( + sharedCacheBaseAddr_address, wordsize, LLDB_INVALID_ADDRESS, + error); + if (error.Fail()) + base_address = LLDB_INVALID_ADDRESS; } + + return true; + } + + // + // add + // NB: sharedCacheBaseAddress is the next field in dyld_all_image_infos + // after + // sharedCacheUUID -- that is, 16 bytes after it, if we wanted to fetch + // it. } - return false; + } + return false; } -void -DynamicLoaderMacOSXDYLD::Initialize() -{ - PluginManager::RegisterPlugin (GetPluginNameStatic(), - GetPluginDescriptionStatic(), - CreateInstance); +void DynamicLoaderMacOSXDYLD::Initialize() { + PluginManager::RegisterPlugin(GetPluginNameStatic(), + GetPluginDescriptionStatic(), CreateInstance); } -void -DynamicLoaderMacOSXDYLD::Terminate() -{ - PluginManager::UnregisterPlugin (CreateInstance); +void DynamicLoaderMacOSXDYLD::Terminate() { + PluginManager::UnregisterPlugin(CreateInstance); } - -lldb_private::ConstString -DynamicLoaderMacOSXDYLD::GetPluginNameStatic() -{ - static ConstString g_name("macosx-dyld"); - return g_name; +lldb_private::ConstString DynamicLoaderMacOSXDYLD::GetPluginNameStatic() { + static ConstString g_name("macosx-dyld"); + return g_name; } -const char * -DynamicLoaderMacOSXDYLD::GetPluginDescriptionStatic() -{ - return "Dynamic loader plug-in that watches for shared library loads/unloads in MacOSX user processes."; +const char *DynamicLoaderMacOSXDYLD::GetPluginDescriptionStatic() { + return "Dynamic loader plug-in that watches for shared library loads/unloads " + "in MacOSX user processes."; } - //------------------------------------------------------------------ // PluginInterface protocol //------------------------------------------------------------------ -lldb_private::ConstString -DynamicLoaderMacOSXDYLD::GetPluginName() -{ - return GetPluginNameStatic(); +lldb_private::ConstString DynamicLoaderMacOSXDYLD::GetPluginName() { + return GetPluginNameStatic(); } -uint32_t -DynamicLoaderMacOSXDYLD::GetPluginVersion() -{ - return 1; -} +uint32_t DynamicLoaderMacOSXDYLD::GetPluginVersion() { return 1; } -uint32_t -DynamicLoaderMacOSXDYLD::AddrByteSize() -{ - std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); +uint32_t DynamicLoaderMacOSXDYLD::AddrByteSize() { + std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex()); - switch (m_dyld.header.magic) - { - case llvm::MachO::MH_MAGIC: - case llvm::MachO::MH_CIGAM: - return 4; - - case llvm::MachO::MH_MAGIC_64: - case llvm::MachO::MH_CIGAM_64: - return 8; - - default: - break; - } - return 0; + switch (m_dyld.header.magic) { + case llvm::MachO::MH_MAGIC: + case llvm::MachO::MH_CIGAM: + return 4; + + case llvm::MachO::MH_MAGIC_64: + case llvm::MachO::MH_CIGAM_64: + return 8; + + default: + break; + } + return 0; } -lldb::ByteOrder -DynamicLoaderMacOSXDYLD::GetByteOrderFromMagic(uint32_t magic) -{ - switch (magic) - { - case llvm::MachO::MH_MAGIC: - case llvm::MachO::MH_MAGIC_64: - return endian::InlHostByteOrder(); - - case llvm::MachO::MH_CIGAM: - case llvm::MachO::MH_CIGAM_64: - if (endian::InlHostByteOrder() == lldb::eByteOrderBig) - return lldb::eByteOrderLittle; - else - return lldb::eByteOrderBig; - - default: - break; - } - return lldb::eByteOrderInvalid; +lldb::ByteOrder DynamicLoaderMacOSXDYLD::GetByteOrderFromMagic(uint32_t magic) { + switch (magic) { + case llvm::MachO::MH_MAGIC: + case llvm::MachO::MH_MAGIC_64: + return endian::InlHostByteOrder(); + + case llvm::MachO::MH_CIGAM: + case llvm::MachO::MH_CIGAM_64: + if (endian::InlHostByteOrder() == lldb::eByteOrderBig) + return lldb::eByteOrderLittle; + else + return lldb::eByteOrderBig; + + default: + break; + } + return lldb::eByteOrderInvalid; } diff --git a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.h b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.h index 5c970218b9a..25ccf702e96 100644 --- a/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.h +++ b/lldb/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.h @@ -7,10 +7,10 @@ // //===----------------------------------------------------------------------===// - -// This is the DynamicLoader plugin for Darwin (macOS / iPhoneOS / tvOS / watchOS) +// This is the DynamicLoader plugin for Darwin (macOS / iPhoneOS / tvOS / +// watchOS) // platforms earlier than 2016, where lldb would read the "dyld_all_image_infos" -// dyld internal structure to understand where things were loaded and the +// dyld internal structure to understand where things were loaded and the // solib loaded/unloaded notification function we put a breakpoint on gives us // an array of (load address, mod time, file path) tuples. // @@ -23,198 +23,164 @@ // C Includes // C++ Includes -#include <vector> #include <mutex> +#include <vector> // Other libraries and framework includes // Project includes -#include "lldb/Target/DynamicLoader.h" -#include "lldb/Host/FileSpec.h" #include "lldb/Core/StructuredData.h" #include "lldb/Core/UUID.h" +#include "lldb/Host/FileSpec.h" +#include "lldb/Target/DynamicLoader.h" #include "lldb/Target/Process.h" #include "lldb/Utility/SafeMachO.h" #include "DynamicLoaderDarwin.h" -class DynamicLoaderMacOSXDYLD : public lldb_private::DynamicLoaderDarwin -{ +class DynamicLoaderMacOSXDYLD : public lldb_private::DynamicLoaderDarwin { public: - DynamicLoaderMacOSXDYLD(lldb_private::Process *process); + DynamicLoaderMacOSXDYLD(lldb_private::Process *process); - virtual ~DynamicLoaderMacOSXDYLD() override; + virtual ~DynamicLoaderMacOSXDYLD() override; - //------------------------------------------------------------------ - // Static Functions - //------------------------------------------------------------------ - static void - Initialize(); + //------------------------------------------------------------------ + // Static Functions + //------------------------------------------------------------------ + static void Initialize(); - static void - Terminate(); + static void Terminate(); - static lldb_private::ConstString - GetPluginNameStatic(); + static lldb_private::ConstString GetPluginNameStatic(); - static const char * - GetPluginDescriptionStatic(); + static const char *GetPluginDescriptionStatic(); - static lldb_private::DynamicLoader * - CreateInstance (lldb_private::Process *process, bool force); + static lldb_private::DynamicLoader * + CreateInstance(lldb_private::Process *process, bool force); - //------------------------------------------------------------------ - /// Called after attaching a process. - /// - /// Allow DynamicLoader plug-ins to execute some code after - /// attaching to a process. - //------------------------------------------------------------------ - bool - ProcessDidExec() override; + //------------------------------------------------------------------ + /// Called after attaching a process. + /// + /// Allow DynamicLoader plug-ins to execute some code after + /// attaching to a process. + //------------------------------------------------------------------ + bool ProcessDidExec() override; - lldb_private::Error - CanLoadImage() override; + lldb_private::Error CanLoadImage() override; - bool - GetSharedCacheInformation (lldb::addr_t &base_address, - lldb_private::UUID &uuid, - lldb_private::LazyBool &using_shared_cache, - lldb_private::LazyBool &private_shared_cache) override; + bool GetSharedCacheInformation( + lldb::addr_t &base_address, lldb_private::UUID &uuid, + lldb_private::LazyBool &using_shared_cache, + lldb_private::LazyBool &private_shared_cache) override; - //------------------------------------------------------------------ - // PluginInterface protocol - //------------------------------------------------------------------ - lldb_private::ConstString - GetPluginName() override; + //------------------------------------------------------------------ + // PluginInterface protocol + //------------------------------------------------------------------ + lldb_private::ConstString GetPluginName() override; - uint32_t - GetPluginVersion() override; + uint32_t GetPluginVersion() override; protected: - void - PutToLog(lldb_private::Log *log) const; - - void - DoInitialImageFetch () override; - - bool - NeedToDoInitialImageFetch () override; - - bool - DidSetNotificationBreakpoint () override; - - void - DoClear () override; - - bool - ReadDYLDInfoFromMemoryAndSetNotificationCallback (lldb::addr_t addr); - - static bool - NotifyBreakpointHit (void *baton, - lldb_private::StoppointCallbackContext *context, - lldb::user_id_t break_id, - lldb::user_id_t break_loc_id); - - uint32_t - AddrByteSize(); - - bool - ReadMachHeader (lldb::addr_t addr, - llvm::MachO::mach_header *header, - lldb_private::DataExtractor *load_command_data); - - uint32_t - ParseLoadCommands (const lldb_private::DataExtractor& data, - ImageInfo& dylib_info, - lldb_private::FileSpec *lc_id_dylinker); - - struct DYLDAllImageInfos - { - uint32_t version; - uint32_t dylib_info_count; // Version >= 1 - lldb::addr_t dylib_info_addr; // Version >= 1 - lldb::addr_t notification; // Version >= 1 - bool processDetachedFromSharedRegion; // Version >= 1 - bool libSystemInitialized; // Version >= 2 - lldb::addr_t dyldImageLoadAddress; // Version >= 2 - - DYLDAllImageInfos() : - version (0), - dylib_info_count (0), - dylib_info_addr (LLDB_INVALID_ADDRESS), - notification (LLDB_INVALID_ADDRESS), - processDetachedFromSharedRegion (false), - libSystemInitialized (false), - dyldImageLoadAddress (LLDB_INVALID_ADDRESS) - { - } - - void - Clear() - { - version = 0; - dylib_info_count = 0; - dylib_info_addr = LLDB_INVALID_ADDRESS; - notification = LLDB_INVALID_ADDRESS; - processDetachedFromSharedRegion = false; - libSystemInitialized = false; - dyldImageLoadAddress = LLDB_INVALID_ADDRESS; - } - - bool - IsValid() const - { - return version >= 1 || version <= 6; - } - }; - - static lldb::ByteOrder - GetByteOrderFromMagic(uint32_t magic); - - bool - SetNotificationBreakpoint () override; - - void - ClearNotificationBreakpoint () override; - - // There is a little tricky bit where you might initially attach while dyld is updating - // the all_image_infos, and you can't read the infos, so you have to continue and pick it - // up when you hit the update breakpoint. At that point, you need to run this initialize - // function, but when you do it that way you DON'T need to do the extra work you would at - // the breakpoint. - // So this function will only do actual work if the image infos haven't been read yet. - // If it does do any work, then it will return true, and false otherwise. That way you can - // call it in the breakpoint action, and if it returns true you're done. - bool - InitializeFromAllImageInfos (); - - bool - ReadAllImageInfosStructure (); - - bool - AddModulesUsingImageInfosAddress (lldb::addr_t image_infos_addr, uint32_t image_infos_count); - - bool - RemoveModulesUsingImageInfosAddress (lldb::addr_t image_infos_addr, uint32_t image_infos_count); - - void - UpdateImageInfosHeaderAndLoadCommands(ImageInfo::collection &image_infos, - uint32_t infos_count, - bool update_executable); - - bool - ReadImageInfos (lldb::addr_t image_infos_addr, - uint32_t image_infos_count, - ImageInfo::collection &image_infos); - - lldb::addr_t m_dyld_all_image_infos_addr; - DYLDAllImageInfos m_dyld_all_image_infos; - uint32_t m_dyld_all_image_infos_stop_id; - lldb::user_id_t m_break_id; - mutable std::recursive_mutex m_mutex; - bool m_process_image_addr_is_all_images_infos; + void PutToLog(lldb_private::Log *log) const; + + void DoInitialImageFetch() override; + + bool NeedToDoInitialImageFetch() override; + + bool DidSetNotificationBreakpoint() override; + + void DoClear() override; + + bool ReadDYLDInfoFromMemoryAndSetNotificationCallback(lldb::addr_t addr); + + static bool + NotifyBreakpointHit(void *baton, + lldb_private::StoppointCallbackContext *context, + lldb::user_id_t break_id, lldb::user_id_t break_loc_id); + + uint32_t AddrByteSize(); + + bool ReadMachHeader(lldb::addr_t addr, llvm::MachO::mach_header *header, + lldb_private::DataExtractor *load_command_data); + + uint32_t ParseLoadCommands(const lldb_private::DataExtractor &data, + ImageInfo &dylib_info, + lldb_private::FileSpec *lc_id_dylinker); + + struct DYLDAllImageInfos { + uint32_t version; + uint32_t dylib_info_count; // Version >= 1 + lldb::addr_t dylib_info_addr; // Version >= 1 + lldb::addr_t notification; // Version >= 1 + bool processDetachedFromSharedRegion; // Version >= 1 + bool libSystemInitialized; // Version >= 2 + lldb::addr_t dyldImageLoadAddress; // Version >= 2 + + DYLDAllImageInfos() + : version(0), dylib_info_count(0), + dylib_info_addr(LLDB_INVALID_ADDRESS), + notification(LLDB_INVALID_ADDRESS), + processDetachedFromSharedRegion(false), libSystemInitialized(false), + dyldImageLoadAddress(LLDB_INVALID_ADDRESS) {} + + void Clear() { + version = 0; + dylib_info_count = 0; + dylib_info_addr = LLDB_INVALID_ADDRESS; + notification = LLDB_INVALID_ADDRESS; + processDetachedFromSharedRegion = false; + libSystemInitialized = false; + dyldImageLoadAddress = LLDB_INVALID_ADDRESS; + } + + bool IsValid() const { return version >= 1 || version <= 6; } + }; + + static lldb::ByteOrder GetByteOrderFromMagic(uint32_t magic); + + bool SetNotificationBreakpoint() override; + + void ClearNotificationBreakpoint() override; + + // There is a little tricky bit where you might initially attach while dyld is + // updating + // the all_image_infos, and you can't read the infos, so you have to continue + // and pick it + // up when you hit the update breakpoint. At that point, you need to run this + // initialize + // function, but when you do it that way you DON'T need to do the extra work + // you would at + // the breakpoint. + // So this function will only do actual work if the image infos haven't been + // read yet. + // If it does do any work, then it will return true, and false otherwise. + // That way you can + // call it in the breakpoint action, and if it returns true you're done. + bool InitializeFromAllImageInfos(); + + bool ReadAllImageInfosStructure(); + + bool AddModulesUsingImageInfosAddress(lldb::addr_t image_infos_addr, + uint32_t image_infos_count); + + bool RemoveModulesUsingImageInfosAddress(lldb::addr_t image_infos_addr, + uint32_t image_infos_count); + + void UpdateImageInfosHeaderAndLoadCommands(ImageInfo::collection &image_infos, + uint32_t infos_count, + bool update_executable); + + bool ReadImageInfos(lldb::addr_t image_infos_addr, uint32_t image_infos_count, + ImageInfo::collection &image_infos); + + lldb::addr_t m_dyld_all_image_infos_addr; + DYLDAllImageInfos m_dyld_all_image_infos; + uint32_t m_dyld_all_image_infos_stop_id; + lldb::user_id_t m_break_id; + mutable std::recursive_mutex m_mutex; + bool m_process_image_addr_is_all_images_infos; private: - DISALLOW_COPY_AND_ASSIGN (DynamicLoaderMacOSXDYLD); + DISALLOW_COPY_AND_ASSIGN(DynamicLoaderMacOSXDYLD); }; #endif // liblldb_DynamicLoaderMacOSXDYLD_h_ |
