| //===-- DynamicLoaderMacOSXDYLD.cpp -----------------------------*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "lldb/Breakpoint/StoppointCallbackContext.h" |
| #include "lldb/Core/DataBuffer.h" |
| #include "lldb/Core/DataBufferHeap.h" |
| #include "lldb/Core/Log.h" |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/PluginManager.h" |
| #include "lldb/Core/State.h" |
| #include "lldb/Symbol/ObjectFile.h" |
| #include "lldb/Target/ObjCLanguageRuntime.h" |
| #include "lldb/Target/RegisterContext.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Target/Thread.h" |
| #include "lldb/Target/ThreadPlanRunToAddress.h" |
| #include "lldb/Target/StackFrame.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__) |
| #else |
| #define DEBUG_PRINTF(fmt, ...) |
| #endif |
| |
| using namespace lldb; |
| using namespace lldb_private; |
| using namespace llvm::MachO; |
| |
| /// FIXME - The ObjC Runtime trampoline handler doesn't really belong here. |
| /// I am putting it here so I can invoke it in the Trampoline code here, but |
| /// it should be moved to the ObjC Runtime support when it is set up. |
| |
| |
| DynamicLoaderMacOSXDYLD::DYLDImageInfo * |
| DynamicLoaderMacOSXDYLD::GetImageInfo (const FileSpec &file_spec, const lldb_private::UUID &uuid) |
| { |
| DYLDImageInfo::collection::iterator pos, end = m_dyld_image_infos.end(); |
| for (pos = m_dyld_image_infos.begin(); pos != end; ++pos) |
| { |
| if (pos->uuid == uuid && pos->file_spec == file_spec) |
| return &(*pos); |
| } |
| |
| if (m_dyld.uuid == uuid && m_dyld.file_spec == file_spec) |
| return &m_dyld; |
| |
| return NULL; |
| } |
| |
| //---------------------------------------------------------------------- |
| // 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) |
| { |
| const llvm::Triple &triple_ref = process->GetTarget().GetArchitecture().GetTriple(); |
| if (triple_ref.getOS() == llvm::Triple::Darwin && triple_ref.getVendor() == llvm::Triple::Apple) |
| create = true; |
| } |
| |
| if (create) |
| return new DynamicLoaderMacOSXDYLD (process); |
| return NULL; |
| } |
| |
| //---------------------------------------------------------------------- |
| // Constructor |
| //---------------------------------------------------------------------- |
| DynamicLoaderMacOSXDYLD::DynamicLoaderMacOSXDYLD (Process* process) : |
| DynamicLoader(process), |
| m_dyld(), |
| 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_dyld_image_infos(), |
| m_dyld_image_infos_stop_id (UINT32_MAX), |
| m_mutex(Mutex::eMutexTypeRecursive) |
| { |
| } |
| |
| //---------------------------------------------------------------------- |
| // Destructor |
| //---------------------------------------------------------------------- |
| DynamicLoaderMacOSXDYLD::~DynamicLoaderMacOSXDYLD() |
| { |
| Clear(true); |
| } |
| |
| //------------------------------------------------------------------ |
| /// Called after attaching a process. |
| /// |
| /// Allow DynamicLoader plug-ins to execute some code after |
| /// attaching to a process. |
| //------------------------------------------------------------------ |
| void |
| DynamicLoaderMacOSXDYLD::DidAttach () |
| { |
| PrivateInitialize(m_process); |
| LocateDYLD (); |
| SetNotificationBreakpoint (); |
| } |
| |
| //------------------------------------------------------------------ |
| /// Called after attaching a process. |
| /// |
| /// Allow DynamicLoader plug-ins to execute some code after |
| /// attaching to a process. |
| //------------------------------------------------------------------ |
| void |
| DynamicLoaderMacOSXDYLD::DidLaunch () |
| { |
| PrivateInitialize(m_process); |
| LocateDYLD (); |
| SetNotificationBreakpoint (); |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // Clear out the state of this class. |
| //---------------------------------------------------------------------- |
| void |
| DynamicLoaderMacOSXDYLD::Clear (bool clear_process) |
| { |
| Mutex::Locker locker(m_mutex); |
| |
| if (m_process->IsAlive() && LLDB_BREAK_ID_IS_VALID(m_break_id)) |
| m_process->ClearBreakpointSiteByID(m_break_id); |
| |
| if (clear_process) |
| m_process = NULL; |
| m_dyld.Clear(false); |
| m_dyld_all_image_infos_addr = LLDB_INVALID_ADDRESS; |
| m_dyld_all_image_infos.Clear(); |
| m_break_id = LLDB_INVALID_BREAK_ID; |
| m_dyld_image_infos.clear(); |
| } |
| |
| //---------------------------------------------------------------------- |
| // Check if we have found DYLD yet |
| //---------------------------------------------------------------------- |
| bool |
| DynamicLoaderMacOSXDYLD::DidSetNotificationBreakpoint() const |
| { |
| return LLDB_BREAK_ID_IS_VALID (m_break_id); |
| } |
| |
| //---------------------------------------------------------------------- |
| // Try and figure out where dyld is by first asking the Process |
| // if it knows (which currently calls down in the the lldb::Process |
| // to get the DYLD info (available on SnowLeopard only). If that fails, |
| // then check in the default addresses. |
| //---------------------------------------------------------------------- |
| bool |
| DynamicLoaderMacOSXDYLD::LocateDYLD() |
| { |
| if (m_dyld_all_image_infos_addr == LLDB_INVALID_ADDRESS) |
| m_dyld_all_image_infos_addr = m_process->GetImageInfoAddress (); |
| |
| if (m_dyld_all_image_infos_addr != LLDB_INVALID_ADDRESS) |
| { |
| if (ReadAllImageInfosStructure ()) |
| { |
| if (m_dyld_all_image_infos.dyldImageLoadAddress != LLDB_INVALID_ADDRESS) |
| return ReadDYLDInfoFromMemoryAndSetNotificationCallback (m_dyld_all_image_infos.dyldImageLoadAddress); |
| else |
| return ReadDYLDInfoFromMemoryAndSetNotificationCallback (m_dyld_all_image_infos_addr & 0xfffffffffff00000ull); |
| } |
| } |
| |
| // Check some default values |
| Module *executable = m_process->GetTarget().GetExecutableModule().get(); |
| |
| if (executable) |
| { |
| if (executable->GetArchitecture().GetAddressByteSize() == 8) |
| { |
| return ReadDYLDInfoFromMemoryAndSetNotificationCallback(0x7fff5fc00000ull); |
| } |
| #if defined (__arm__) |
| else |
| { |
| ArchSpec arm_arch("arm"); |
| if (arm_arch == executable->Arch()) |
| return ReadDYLDInfoFromMemoryAndSetNotificationCallback(0x2fe00000); |
| } |
| #endif |
| return ReadDYLDInfoFromMemoryAndSetNotificationCallback(0x8fe00000); |
| } |
| return false; |
| } |
| |
| //---------------------------------------------------------------------- |
| // Assume that dyld is in memory at ADDR and try to parse it's load |
| // commands |
| //---------------------------------------------------------------------- |
| bool |
| DynamicLoaderMacOSXDYLD::ReadDYLDInfoFromMemoryAndSetNotificationCallback(lldb::addr_t addr) |
| { |
| DataExtractor data; // Load command data |
| if (ReadMachHeader (addr, &m_dyld.header, &data)) |
| { |
| if (m_dyld.header.filetype == HeaderFileTypeDynamicLinkEditor) |
| { |
| m_dyld.address = addr; |
| ModuleSP dyld_module_sp; |
| if (ParseLoadCommands (data, m_dyld, &m_dyld.file_spec)) |
| { |
| if (m_dyld.file_spec) |
| { |
| ArchSpec dyld_arch(eArchTypeMachO, m_dyld.header.cputype, m_dyld.header.cpusubtype); |
| dyld_module_sp = m_process->GetTarget().GetImages().FindFirstModuleForFileSpec (m_dyld.file_spec); |
| |
| if (dyld_module_sp.get() == NULL || dyld_module_sp->GetArchitecture() != dyld_arch) |
| { |
| dyld_module_sp = m_process->GetTarget().GetSharedModule (m_dyld.file_spec, |
| dyld_arch, |
| &m_dyld.uuid); |
| } |
| |
| UpdateImageLoadAddress(dyld_module_sp.get(), m_dyld); |
| } |
| } |
| |
| if (m_dyld_all_image_infos_addr == LLDB_INVALID_ADDRESS && dyld_module_sp.get()) |
| { |
| static ConstString g_dyld_all_image_infos ("dyld_all_image_infos"); |
| const Symbol *symbol = dyld_module_sp->FindFirstSymbolWithNameAndType (g_dyld_all_image_infos, eSymbolTypeData); |
| if (symbol) |
| m_dyld_all_image_infos_addr = symbol->GetValue().GetLoadAddress(&m_process->GetTarget()); |
| } |
| |
| // Update all image infos |
| UpdateAllImageInfos(); |
| |
| // 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 (m_process->GetTarget().GetImages().AppendIfNeeded (dyld_module_sp)) |
| UpdateImageLoadAddress(dyld_module_sp.get(), m_dyld); |
| |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| bool |
| DynamicLoaderMacOSXDYLD::NeedToLocateDYLD () const |
| { |
| return m_dyld_all_image_infos_addr == LLDB_INVALID_ADDRESS; |
| } |
| |
| bool |
| DynamicLoaderMacOSXDYLD::UpdateCommPageLoadAddress(Module *module) |
| { |
| 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) |
| { |
| uint32_t num_sections = section_list->GetSize(); |
| for (uint32_t i=0; i<num_sections; ++i) |
| { |
| Section* section = section_list->GetSectionAtIndex (i).get(); |
| if (section) |
| { |
| const addr_t new_section_load_addr = section->GetFileAddress (); |
| const addr_t old_section_load_addr = m_process->GetTarget().GetSectionLoadList().GetSectionLoadAddress (section); |
| if (old_section_load_addr == LLDB_INVALID_ADDRESS || |
| old_section_load_addr != new_section_load_addr) |
| { |
| if (m_process->GetTarget().GetSectionLoadList().SetSectionLoadAddress (section, section->GetFileAddress ())) |
| changed = true; |
| } |
| } |
| } |
| } |
| } |
| } |
| return changed; |
| } |
| |
| //---------------------------------------------------------------------- |
| // Update the load addresses for all segments in MODULE using the |
| // updated INFO that is passed in. |
| //---------------------------------------------------------------------- |
| bool |
| DynamicLoaderMacOSXDYLD::UpdateImageLoadAddress (Module *module, struct DYLDImageInfo& 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) |
| { |
| // 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) |
| info.slide = 0; |
| const size_t num_sections = section_list->GetSize(); |
| size_t sect_idx = 0; |
| for (sect_idx = 0; sect_idx < num_sections; ++sect_idx) |
| { |
| // Iterate through the object file sections to find the |
| // first section that starts of file offset zero and that |
| // has bytes in the file... |
| Section *section = section_list->GetSectionAtIndex (sect_idx).get(); |
| if (section) |
| { |
| // Find the first section that begins at file offset zero |
| // a file size (skip page zero). |
| if (section->GetFileOffset() == 0 && section->GetFileSize() > 0) |
| { |
| // We have now found the section, lets match it up |
| // with the section in the dyld image info structure. |
| const Segment *dyld_segment = info.FindSegment (section->GetName()); |
| if (dyld_segment) |
| info.slide = info.address - dyld_segment->addr; |
| // We have found the slide amount, so we can exit |
| // this for loop. |
| break; |
| } |
| } |
| } |
| |
| // We now know the slide amount, so go through all sections |
| // and update the load addresses with the correct values. |
| uint32_t num_segments = info.segments.size(); |
| for (uint32_t i=0; i<num_segments; ++i) |
| { |
| SectionSP section_sp(section_list->FindSectionByName(info.segments[i].name)); |
| assert (section_sp.get() != NULL); |
| const addr_t new_section_load_addr = info.segments[i].addr + info.slide; |
| const addr_t old_section_load_addr = m_process->GetTarget().GetSectionLoadList().GetSectionLoadAddress (section_sp.get()); |
| if (old_section_load_addr == LLDB_INVALID_ADDRESS || |
| old_section_load_addr != new_section_load_addr) |
| { |
| if (m_process->GetTarget().GetSectionLoadList().SetSectionLoadAddress (section_sp.get(), new_section_load_addr)) |
| changed = true; |
| } |
| } |
| } |
| } |
| } |
| return changed; |
| } |
| |
| //---------------------------------------------------------------------- |
| // Update the load addresses for all segments in MODULE using the |
| // updated INFO that is passed in. |
| //---------------------------------------------------------------------- |
| bool |
| DynamicLoaderMacOSXDYLD::UnloadImageLoadAddress (Module *module, struct DYLDImageInfo& 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) |
| { |
| uint32_t num_segments = info.segments.size(); |
| for (uint32_t i=0; i<num_segments; ++i) |
| { |
| SectionSP section_sp(section_list->FindSectionByName(info.segments[i].name)); |
| assert (section_sp.get() != NULL); |
| const addr_t old_section_load_addr = info.segments[i].addr + info.slide; |
| if (m_process->GetTarget().GetSectionLoadList().SetSectionUnloaded (section_sp.get(), old_section_load_addr)) |
| changed = true; |
| } |
| } |
| } |
| } |
| return changed; |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // 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 |
| 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 |
| DynamicLoaderMacOSXDYLD* dyld_instance = (DynamicLoaderMacOSXDYLD*) baton; |
| dyld_instance->UpdateAllImageInfos(); |
| // Return true to stop the target, false to just let the target run |
| return dyld_instance->GetStopWhenImagesChange(); |
| } |
| |
| bool |
| DynamicLoaderMacOSXDYLD::ReadAllImageInfosStructure () |
| { |
| Mutex::Locker locker(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; |
| |
| 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); |
| uint32_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 |
| assert (sizeof (buf) > count_v11); |
| |
| int count; |
| 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); |
| } |
| } |
| else |
| { |
| return false; |
| } |
| |
| if (m_dyld_all_image_infos.version >= 11) |
| count = count_v11; |
| else |
| count = 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; |
| } |
| |
| //---------------------------------------------------------------------- |
| // If we have found where the "_dyld_all_image_infos" lives in memory, |
| // read the current info from it, and then update all image load |
| // addresses (or lack thereof). |
| //---------------------------------------------------------------------- |
| uint32_t |
| DynamicLoaderMacOSXDYLD::UpdateAllImageInfos() |
| { |
| LogSP log(lldb_private::GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); |
| if (ReadAllImageInfosStructure ()) |
| { |
| Mutex::Locker locker(m_mutex); |
| if (m_process->GetStopID() == m_dyld_image_infos_stop_id) |
| m_dyld_image_infos.size(); |
| |
| uint32_t idx; |
| uint32_t i = 0; |
| DYLDImageInfo::collection old_dyld_all_image_infos; |
| old_dyld_all_image_infos.swap(m_dyld_image_infos); |
| |
| // If we made it here, we are assuming that the all dylib info data should |
| // be valid, lets read the info array. |
| const ByteOrder endian = m_dyld.GetByteOrder(); |
| const uint32_t addr_size = m_dyld.GetAddressByteSize(); |
| |
| if (m_dyld_all_image_infos.dylib_info_count > 0) |
| { |
| if (m_dyld_all_image_infos.dylib_info_addr == 0) |
| { |
| // DYLD is updating the images right now... |
| } |
| else |
| { |
| m_dyld_image_infos.resize(m_dyld_all_image_infos.dylib_info_count); |
| const size_t count = m_dyld_image_infos.size() * 3 * addr_size; |
| DataBufferHeap info_data(count, 0); |
| Error error; |
| const size_t bytes_read = m_process->ReadMemory (m_dyld_all_image_infos.dylib_info_addr, |
| info_data.GetBytes(), |
| info_data.GetByteSize(), |
| error); |
| if (bytes_read == count) |
| { |
| uint32_t info_data_offset = 0; |
| DataExtractor info_data_ref(info_data.GetBytes(), info_data.GetByteSize(), endian, addr_size); |
| for (i = 0; info_data_ref.ValidOffset(info_data_offset); i++) |
| { |
| assert (i < m_dyld_image_infos.size()); |
| m_dyld_image_infos[i].address = info_data_ref.GetPointer(&info_data_offset); |
| lldb::addr_t path_addr = info_data_ref.GetPointer(&info_data_offset); |
| m_dyld_image_infos[i].mod_date = info_data_ref.GetPointer(&info_data_offset); |
| |
| char raw_path[PATH_MAX]; |
| m_process->ReadMemory (path_addr, raw_path, sizeof(raw_path), error); |
| m_dyld_image_infos[i].file_spec.SetFile(raw_path, true); |
| } |
| assert(i == m_dyld_all_image_infos.dylib_info_count); |
| |
| UpdateAllImageInfosHeaderAndLoadCommands(); |
| } |
| else |
| { |
| DEBUG_PRINTF( "unable to read all data for all_dylib_infos."); |
| m_dyld_image_infos.clear(); |
| } |
| } |
| } |
| else |
| { |
| m_dyld_image_infos.clear(); |
| } |
| |
| // If our new list is smaller than our old list, we have unloaded |
| // some shared libraries |
| if (m_dyld_image_infos.size() != old_dyld_all_image_infos.size()) |
| { |
| ModuleList unloaded_module_list; |
| if (old_dyld_all_image_infos.size() == 0) |
| { |
| // This is the first time we are loading shared libraries, |
| // we need to make sure to trim anything that isn't in the |
| // m_dyld_image_infos out of the target module list since |
| // we might have shared libraries that got loaded from |
| // elsewhere due to DYLD_FRAMEWORK_PATH, or DYLD_LIBRARY_PATH |
| // environment variables... |
| ModuleList& images = m_process->GetTarget().GetImages(); |
| const size_t num_images = images.GetSize(); |
| for (idx = 0; idx < num_images; ++idx) |
| { |
| ModuleSP module_sp (images.GetModuleAtIndex (idx)); |
| |
| if (GetImageInfo (module_sp->GetFileSpec(), module_sp->GetUUID()) == NULL) |
| unloaded_module_list.AppendIfNeeded (module_sp); |
| } |
| } |
| else |
| { |
| uint32_t old_idx; |
| for (idx = 0; idx < old_dyld_all_image_infos.size(); ++idx) |
| { |
| for (old_idx = idx; old_idx < old_dyld_all_image_infos.size(); ++old_idx) |
| { |
| if (m_dyld_image_infos[idx].file_spec == old_dyld_all_image_infos[old_idx].file_spec) |
| { |
| old_dyld_all_image_infos[old_idx].address = LLDB_INVALID_ADDRESS; |
| break; |
| } |
| } |
| } |
| |
| for (old_idx = 0; old_idx < old_dyld_all_image_infos.size(); ++old_idx) |
| { |
| if (old_dyld_all_image_infos[old_idx].address != LLDB_INVALID_ADDRESS) |
| { |
| if (log) |
| old_dyld_all_image_infos[old_idx].PutToLog (log.get()); |
| ModuleSP unload_image_module_sp(m_process->GetTarget().GetImages().FindFirstModuleForFileSpec (old_dyld_all_image_infos[old_idx].file_spec)); |
| if (unload_image_module_sp.get()) |
| { |
| if (UnloadImageLoadAddress (unload_image_module_sp.get(), old_dyld_all_image_infos[old_idx])) |
| unloaded_module_list.AppendIfNeeded (unload_image_module_sp); |
| } |
| } |
| } |
| } |
| |
| if (unloaded_module_list.GetSize() > 0) |
| { |
| if (log) |
| { |
| log->PutCString("Unloaded:"); |
| unloaded_module_list.LogUUIDAndPaths (log, "DynamicLoaderMacOSXDYLD::ModulesDidUnload"); |
| } |
| m_process->GetTarget().ModulesDidUnload (unloaded_module_list); |
| } |
| } |
| else |
| { |
| if (log) |
| PutToLog(log.get()); |
| } |
| m_dyld_image_infos_stop_id = m_process->GetStopID(); |
| } |
| else |
| { |
| m_dyld_image_infos.clear(); |
| } |
| |
| const uint32_t num_dylibs = m_dyld_image_infos.size(); |
| if (num_dylibs > 0) |
| { |
| ModuleList loaded_module_list; |
| for (uint32_t idx = 0; idx<num_dylibs; ++idx) |
| { |
| ArchSpec arch_spec(eArchTypeMachO, m_dyld_image_infos[idx].header.cputype, m_dyld_image_infos[idx].header.cpusubtype); |
| ModuleSP image_module_sp(m_process->GetTarget().GetImages().FindFirstModuleForFileSpec (m_dyld_image_infos[idx].file_spec)); |
| if (image_module_sp.get() == NULL || image_module_sp->GetArchitecture() != arch_spec) |
| { |
| image_module_sp = m_process->GetTarget().GetSharedModule (m_dyld_image_infos[idx].file_spec, |
| arch_spec, |
| &m_dyld_image_infos[idx].uuid); |
| } |
| |
| if (image_module_sp) |
| { |
| if (m_dyld_image_infos[idx].header.filetype == HeaderFileTypeDynamicLinkEditor) |
| image_module_sp->SetIsDynamicLinkEditor (true); |
| |
| 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) |
| { |
| FileSpec objfile_file_spec(objfile->GetFileSpec()); |
| ModuleSP commpage_image_module_sp(m_process->GetTarget().GetImages().FindFirstModuleForFileSpec (objfile_file_spec, &commpage_dbstr)); |
| if (commpage_image_module_sp.get() == NULL) |
| { |
| commpage_image_module_sp = m_process->GetTarget().GetSharedModule (m_dyld_image_infos[idx].file_spec, |
| arch_spec, |
| &m_dyld_image_infos[idx].uuid, |
| &commpage_dbstr, |
| objfile->GetOffset() + commpage_section->GetOffset()); |
| UpdateCommPageLoadAddress(commpage_image_module_sp.get()); |
| } |
| } |
| } |
| } |
| |
| // 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(), m_dyld_image_infos[idx])) |
| { |
| loaded_module_list.AppendIfNeeded (image_module_sp); |
| } |
| } |
| } |
| if (loaded_module_list.GetSize() > 0) |
| { |
| // FIXME: This should really be in the Runtime handlers class, which should get |
| // called by the target's ModulesDidLoad, but we're doing it all locally for now |
| // to save time. |
| // Also, I'm assuming there can be only one libobjc dylib loaded... |
| |
| ObjCLanguageRuntime *objc_runtime = m_process->GetObjCLanguageRuntime(); |
| if (objc_runtime != NULL && !objc_runtime->HasReadObjCLibrary()) |
| { |
| size_t num_modules = loaded_module_list.GetSize(); |
| for (int i = 0; i < num_modules; i++) |
| { |
| if (objc_runtime->IsModuleObjCLibrary (loaded_module_list.GetModuleAtIndex (i))) |
| { |
| objc_runtime->ReadObjCLibrary (loaded_module_list.GetModuleAtIndex (i)); |
| break; |
| } |
| } |
| } |
| if (log) |
| loaded_module_list.LogUUIDAndPaths (log, "DynamicLoaderMacOSXDYLD::ModulesDidLoad"); |
| m_process->GetTarget().ModulesDidLoad (loaded_module_list); |
| } |
| } |
| return m_dyld_image_infos.size(); |
| } |
| |
| //---------------------------------------------------------------------- |
| // Read a mach_header at ADDR into HEADER, and also fill in the load |
| // command data into LOAD_COMMAND_DATA if it is non-NULL. |
| // |
| // Returns true if we succeed, false if we fail for any reason. |
| //---------------------------------------------------------------------- |
| bool |
| DynamicLoaderMacOSXDYLD::ReadMachHeader (lldb::addr_t addr, mach_header *header, DataExtractor *load_command_data) |
| { |
| DataBufferHeap header_bytes(sizeof(mach_header), 0); |
| Error error; |
| size_t bytes_read = m_process->ReadMemory (addr, |
| header_bytes.GetBytes(), |
| header_bytes.GetByteSize(), |
| error); |
| if (bytes_read == sizeof(mach_header)) |
| { |
| uint32_t offset = 0; |
| ::memset (header, 0, sizeof(header)); |
| |
| // Get the magic byte unswapped so we can figure out what we are dealing with |
| DataExtractor data(header_bytes.GetBytes(), header_bytes.GetByteSize(), lldb::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::HeaderMagic32: |
| case llvm::MachO::HeaderMagic32Swapped: |
| data.SetAddressByteSize(4); |
| load_cmd_addr += sizeof(mach_header); |
| break; |
| |
| case llvm::MachO::HeaderMagic64: |
| case llvm::MachO::HeaderMagic64Swapped: |
| data.SetAddressByteSize(8); |
| load_cmd_addr += sizeof(mach_header_64); |
| break; |
| |
| default: |
| return false; |
| } |
| |
| // Read the rest of dyld's mach header |
| if (data.GetU32(&offset, &header->cputype, (sizeof(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 |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // Parse the load commands for an image |
| //---------------------------------------------------------------------- |
| uint32_t |
| DynamicLoaderMacOSXDYLD::ParseLoadCommands (const DataExtractor& data, struct DYLDImageInfo& dylib_info, FileSpec *lc_id_dylinker) |
| { |
| uint32_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(load_command))) |
| { |
| load_command load_cmd; |
| uint32_t load_cmd_offset = offset; |
| load_cmd.cmd = data.GetU32 (&offset); |
| load_cmd.cmdsize = data.GetU32 (&offset); |
| switch (load_cmd.cmd) |
| { |
| case LoadCommandSegment32: |
| { |
| segment.name.SetTrimmedCStringWithLength ((const char *)data.GetData(&offset, 16), 16); |
| segment.addr = data.GetU32 (&offset); |
| segment.size = data.GetU32 (&offset); |
| dylib_info.segments.push_back (segment); |
| } |
| break; |
| |
| case LoadCommandSegment64: |
| { |
| segment.name.SetTrimmedCStringWithLength ((const char *)data.GetData(&offset, 16), 16); |
| segment.addr = data.GetU64 (&offset); |
| segment.size = data.GetU64 (&offset); |
| dylib_info.segments.push_back (segment); |
| } |
| break; |
| |
| case LoadCommandDynamicLinkerIdent: |
| if (lc_id_dylinker) |
| { |
| uint32_t name_offset = load_cmd_offset + data.GetU32 (&offset); |
| const char *path = data.PeekCStr (name_offset); |
| lc_id_dylinker->SetFile (path, true); |
| } |
| break; |
| |
| case LoadCommandUUID: |
| 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; |
| } |
| } |
| return cmd_idx; |
| } |
| |
| //---------------------------------------------------------------------- |
| // Read the mach_header and load commands for each image that the |
| // _dyld_all_image_infos structure points to and cache the results. |
| //---------------------------------------------------------------------- |
| void |
| DynamicLoaderMacOSXDYLD::UpdateAllImageInfosHeaderAndLoadCommands() |
| { |
| uint32_t exe_idx = UINT32_MAX; |
| // Read any UUID values that we can get |
| for (uint32_t i = 0; i < m_dyld_all_image_infos.dylib_info_count; i++) |
| { |
| if (!m_dyld_image_infos[i].UUIDValid()) |
| { |
| DataExtractor data; // Load command data |
| if (!ReadMachHeader (m_dyld_image_infos[i].address, &m_dyld_image_infos[i].header, &data)) |
| continue; |
| |
| ParseLoadCommands (data, m_dyld_image_infos[i], NULL); |
| |
| if (m_dyld_image_infos[i].header.filetype == HeaderFileTypeExecutable) |
| exe_idx = i; |
| } |
| } |
| |
| if (exe_idx < m_dyld_image_infos.size()) |
| { |
| bool set_executable = false; |
| ArchSpec dyld_exe_arch_spec(eArchTypeMachO, m_dyld_image_infos[exe_idx].header.cputype, m_dyld_image_infos[exe_idx].header.cpusubtype); |
| ModuleSP exe_module_sp(m_process->GetTarget().GetExecutableModule()); |
| if (exe_module_sp.get()) |
| { |
| if (exe_module_sp->GetFileSpec() != m_dyld_image_infos[exe_idx].file_spec || |
| exe_module_sp->GetArchitecture() != dyld_exe_arch_spec) |
| set_executable = true; |
| } |
| else |
| set_executable = true; |
| |
| if (set_executable) |
| { |
| exe_module_sp = m_process->GetTarget().GetSharedModule (m_dyld_image_infos[exe_idx].file_spec, |
| dyld_exe_arch_spec, |
| &m_dyld_image_infos[exe_idx].uuid); |
| if (exe_module_sp.get()) |
| { |
| // If we found the file where it purported to be, then it should |
| // be safe to load dependent images. |
| bool get_dependent_images = exe_module_sp->GetFileSpec() == m_dyld_image_infos[exe_idx].file_spec; |
| |
| m_process->GetTarget().SetExecutableModule (exe_module_sp, get_dependent_images); |
| } |
| } |
| } |
| } |
| |
| //---------------------------------------------------------------------- |
| // Dump a Segment to the file handle provided. |
| //---------------------------------------------------------------------- |
| void |
| DynamicLoaderMacOSXDYLD::Segment::PutToLog (Log *log, lldb::addr_t slide) const |
| { |
| if (log) |
| log->Printf("\t\t%16s [0x%16.16llx - 0x%16.16llx)", name.AsCString(""), addr + slide, addr + slide + size); |
| } |
| |
| const DynamicLoaderMacOSXDYLD::Segment * |
| DynamicLoaderMacOSXDYLD::DYLDImageInfo::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 |
| DynamicLoaderMacOSXDYLD::DYLDImageInfo::PutToLog (Log *log) const |
| { |
| if (log == NULL) |
| return; |
| uint8_t *u = (uint8_t *)uuid.GetBytes(); |
| |
| if (address == LLDB_INVALID_ADDRESS) |
| { |
| if (u) |
| { |
| log->Printf("\t modtime=0x%8.8llx 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/%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.GetDirectory().AsCString(), |
| file_spec.GetFilename().AsCString()); |
| } |
| else |
| log->Printf("\t modtime=0x%8.8llx path='%s/%s' (UNLOADED)", |
| mod_date, |
| file_spec.GetDirectory().AsCString(), |
| file_spec.GetFilename().AsCString()); |
| } |
| else |
| { |
| if (u) |
| { |
| log->Printf("\taddress=0x%16.16llx modtime=0x%8.8llx 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/%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.GetDirectory().AsCString(), |
| file_spec.GetFilename().AsCString()); |
| } |
| else |
| { |
| log->Printf("\taddress=0x%16.16llx modtime=0x%8.8llx path='%s/%s'", |
| address, |
| mod_date, |
| file_spec.GetDirectory().AsCString(), |
| file_spec.GetFilename().AsCString()); |
| |
| } |
| for (uint32_t i=0; i<segments.size(); ++i) |
| segments[i].PutToLog(log, slide); |
| } |
| } |
| |
| //---------------------------------------------------------------------- |
| // 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; |
| |
| Mutex::Locker locker(m_mutex); |
| log->Printf("dyld_all_image_infos = { version=%d, count=%d, addr=0x%8.8llx, notify=0x%8.8llx }", |
| 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::PrivateInitialize(Process *process) |
| { |
| DEBUG_PRINTF("DynamicLoaderMacOSXDYLD::%s() process state = %s\n", __FUNCTION__, StateAsCString(m_process->GetState())); |
| Clear(true); |
| m_process = process; |
| m_process->GetTarget().GetSectionLoadList().Clear(); |
| } |
| |
| 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. |
| |
| if (m_process->GetTarget().GetSectionLoadList().ResolveLoadAddress(m_dyld_all_image_infos.notification, so_addr)) |
| { |
| Breakpoint *dyld_break = m_process->GetTarget().CreateBreakpoint (so_addr, true).get(); |
| dyld_break->SetCallback (DynamicLoaderMacOSXDYLD::NotifyBreakpointHit, this, true); |
| m_break_id = dyld_break->GetID(); |
| } |
| } |
| } |
| return m_break_id != LLDB_INVALID_BREAK_ID; |
| } |
| |
| //---------------------------------------------------------------------- |
| // Member function that gets called when the process state changes. |
| //---------------------------------------------------------------------- |
| void |
| DynamicLoaderMacOSXDYLD::PrivateProcessStateChanged (Process *process, StateType state) |
| { |
| DEBUG_PRINTF("DynamicLoaderMacOSXDYLD::%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 (NeedToLocateDYLD ()) |
| LocateDYLD (); |
| |
| SetNotificationBreakpoint (); |
| } |
| break; |
| |
| case eStateRunning: |
| case eStateStepping: |
| case eStateCrashed: |
| case eStateSuspended: |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| ThreadPlanSP |
| DynamicLoaderMacOSXDYLD::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; |
| LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); |
| |
| if (current_symbol != NULL) |
| { |
| if (current_symbol->IsTrampoline()) |
| { |
| const ConstString &trampoline_name = current_symbol->GetMangled().GetName(Mangled::ePreferMangled); |
| |
| if (trampoline_name) |
| { |
| SymbolContextList target_symbols; |
| ModuleList &images = thread.GetProcess().GetTarget().GetImages(); |
| images.FindSymbolsWithNameAndType(trampoline_name, eSymbolTypeCode, target_symbols); |
| // FIXME - Make the Run to Address take multiple addresses, and |
| // run to any of them. |
| uint32_t num_symbols = target_symbols.GetSize(); |
| if (num_symbols == 1) |
| { |
| SymbolContext context; |
| AddressRange addr_range; |
| if (target_symbols.GetContextAtIndex(0, context)) |
| { |
| context.GetAddressRange (eSymbolContextEverything, addr_range); |
| thread_plan_sp.reset (new ThreadPlanRunToAddress (thread, addr_range.GetBaseAddress(), stop_others)); |
| } |
| else |
| { |
| if (log) |
| log->Printf ("Couldn't resolve the symbol context."); |
| } |
| } |
| else if (num_symbols > 1) |
| { |
| std::vector<lldb::addr_t> addresses; |
| addresses.resize (num_symbols); |
| for (uint32_t i = 0; i < num_symbols; i++) |
| { |
| SymbolContext context; |
| AddressRange addr_range; |
| if (target_symbols.GetContextAtIndex(i, context)) |
| { |
| context.GetAddressRange (eSymbolContextEverything, addr_range); |
| lldb::addr_t load_addr = addr_range.GetBaseAddress().GetLoadAddress(&thread.GetProcess().GetTarget()); |
| addresses[i] = load_addr; |
| } |
| } |
| if (addresses.size() > 0) |
| thread_plan_sp.reset (new ThreadPlanRunToAddress (thread, addresses, stop_others)); |
| else |
| { |
| if (log) |
| log->Printf ("Couldn't resolve the symbol contexts."); |
| } |
| } |
| else |
| { |
| if (log) |
| { |
| log->Printf ("Could not find symbol for trampoline target: \"%s\"", trampoline_name.AsCString()); |
| } |
| } |
| } |
| } |
| } |
| else |
| { |
| if (log) |
| log->Printf ("Could not find symbol for step through."); |
| } |
| |
| return thread_plan_sp; |
| } |
| |
| 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; |
| } |
| |
| void |
| DynamicLoaderMacOSXDYLD::Initialize() |
| { |
| PluginManager::RegisterPlugin (GetPluginNameStatic(), |
| GetPluginDescriptionStatic(), |
| CreateInstance); |
| } |
| |
| void |
| DynamicLoaderMacOSXDYLD::Terminate() |
| { |
| PluginManager::UnregisterPlugin (CreateInstance); |
| } |
| |
| |
| const char * |
| DynamicLoaderMacOSXDYLD::GetPluginNameStatic() |
| { |
| return "dynamic-loader.macosx-dyld"; |
| } |
| |
| const char * |
| DynamicLoaderMacOSXDYLD::GetPluginDescriptionStatic() |
| { |
| return "Dynamic loader plug-in that watches for shared library loads/unloads in MacOSX user processes."; |
| } |
| |
| |
| //------------------------------------------------------------------ |
| // PluginInterface protocol |
| //------------------------------------------------------------------ |
| const char * |
| DynamicLoaderMacOSXDYLD::GetPluginName() |
| { |
| return "DynamicLoaderMacOSXDYLD"; |
| } |
| |
| const char * |
| DynamicLoaderMacOSXDYLD::GetShortPluginName() |
| { |
| return GetPluginNameStatic(); |
| } |
| |
| uint32_t |
| DynamicLoaderMacOSXDYLD::GetPluginVersion() |
| { |
| return 1; |
| } |
| |
| void |
| DynamicLoaderMacOSXDYLD::GetPluginCommandHelp (const char *command, Stream *strm) |
| { |
| } |
| |
| Error |
| DynamicLoaderMacOSXDYLD::ExecutePluginCommand (Args &command, Stream *strm) |
| { |
| Error error; |
| error.SetErrorString("No plug-in command are currently supported."); |
| return error; |
| } |
| |
| Log * |
| DynamicLoaderMacOSXDYLD::EnablePluginLogging (Stream *strm, Args &command) |
| { |
| return NULL; |
| } |
| |
| |
