diff options
Diffstat (limited to 'source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp')
| -rw-r--r-- | source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp | 1914 |
1 files changed, 970 insertions, 944 deletions
diff --git a/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp b/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp index efca1bea4ad6..bd0e772f7783 100644 --- a/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp +++ b/source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderDarwin.cpp @@ -7,6 +7,8 @@ // //===----------------------------------------------------------------------===// +#include "DynamicLoaderDarwin.h" + #include "lldb/Breakpoint/StoppointCallbackContext.h" #include "lldb/Core/DataBuffer.h" #include "lldb/Core/DataBufferHeap.h" @@ -18,6 +20,7 @@ #include "lldb/Core/Section.h" #include "lldb/Core/State.h" #include "lldb/Expression/DiagnosticManager.h" +#include "lldb/Host/FileSystem.h" #include "lldb/Symbol/ClangASTContext.h" #include "lldb/Symbol/Function.h" #include "lldb/Symbol/ObjectFile.h" @@ -30,12 +33,10 @@ #include "lldb/Target/ThreadPlanCallFunction.h" #include "lldb/Target/ThreadPlanRunToAddress.h" -#include "DynamicLoaderDarwin.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 @@ -49,29 +50,18 @@ 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 +69,10 @@ 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(); } //------------------------------------------------------------------ @@ -93,570 +81,617 @@ 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(); +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() != + FileSystem::GetModificationTime(module_sp->GetFileSpec())) + 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; +} - 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; +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; + } + } } + } } - return module_sp; -} + } -DynamicLoaderDarwin::ImageInfo * -DynamicLoaderDarwin::FindImageInfoForAddress (addr_t load_address) -{ - std::lock_guard<std::recursive_mutex> guard(m_mutex); - const size_t image_count = m_dyld_image_infos.size(); - for (size_t i = 0; i < image_count; i++) - { - if (load_address == m_dyld_image_infos[i].address) - { - return &m_dyld_image_infos[i]; - } + if (unloaded_module_list.GetSize() > 0) { + if (log) { + log->PutCString("Unloaded:"); + unloaded_module_list.LogUUIDAndPaths( + log, "DynamicLoaderDarwin::UnloadModules"); } - return NULL; + m_process->GetTarget().GetImages().Remove(unloaded_module_list); + m_dyld_image_infos_stop_id = m_process->GetStopID(); + } } -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; +void DynamicLoaderDarwin::UnloadAllImages() { + Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_DYNAMIC_LOADER)); + ModuleList unloaded_modules_list; - 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; - } - } - } - } - } + 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_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_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(); - - // 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); - } +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[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; - } - } + 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(), 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(); } - return true; -} + // Fields that aren't used by DynamicLoaderDarwin so debugserver doesn't + // currently send them + // in the reply. -void -DynamicLoaderDarwin::UpdateDYLDImageInfoFromNewImageInfos (ImageInfo::collection &image_infos) -{ - 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) - { - UpdateDYLDImageInfoFromNewImageInfo (image_infos[i]); - break; // FIXME simulator debugging w/ multiple dylds - } + 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; } -void -DynamicLoaderDarwin::UpdateDYLDImageInfoFromNewImageInfo (ImageInfo &image_info) -{ - // FIXME simulator debugging w/ multiple dylds - 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::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; } + } + } 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 (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::AddExecutableModuleIfInImageInfos (ImageInfo::collection &image_infos) -{ - 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_EXECUTE) - { - Target &target = m_process->GetTarget(); - const bool can_create = true; - ModuleSP exe_module_sp (FindTargetModuleForImageInfo (image_infos[i], can_create, NULL)); - - if (exe_module_sp) - { - UpdateImageLoadAddress (exe_module_sp.get(), image_infos[i]); - - 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. - - const bool get_dependent_images = false; - m_process->GetTarget().SetExecutableModule (exe_module_sp, - get_dependent_images); - - UpdateDYLDImageInfoFromNewImageInfos (image_infos); - } - } - } +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. // @@ -666,478 +701,469 @@ 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); + 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 use_new_spi_interface = false; + + 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; + } + + // 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"); + } + return use_new_spi_interface; +} |