| //===-- DynamicLoaderDarwinKernel.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/Debugger.h" |
| #include "lldb/Core/Log.h" |
| #include "lldb/Core/Module.h" |
| #include "lldb/Core/ModuleSpec.h" |
| #include "lldb/Core/ModuleSpec.h" |
| #include "lldb/Core/PluginManager.h" |
| #include "lldb/Core/Section.h" |
| #include "lldb/Core/State.h" |
| #include "lldb/Host/Symbols.h" |
| #include "lldb/Symbol/ObjectFile.h" |
| #include "lldb/Target/RegisterContext.h" |
| #include "lldb/Target/StackFrame.h" |
| #include "lldb/Target/Target.h" |
| #include "lldb/Target/Thread.h" |
| #include "lldb/Target/ThreadPlanRunToAddress.h" |
| |
| |
| #include "DynamicLoaderDarwinKernel.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; |
| |
| //---------------------------------------------------------------------- |
| // 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 * |
| DynamicLoaderDarwinKernel::CreateInstance (Process* process, bool force) |
| { |
| bool create = force; |
| if (!create) |
| { |
| Module* exe_module = process->GetTarget().GetExecutableModulePointer(); |
| if (exe_module) |
| { |
| ObjectFile *object_file = exe_module->GetObjectFile(); |
| if (object_file) |
| { |
| create = (object_file->GetStrata() == ObjectFile::eStrataKernel); |
| } |
| } |
| |
| if (create) |
| { |
| const llvm::Triple &triple_ref = process->GetTarget().GetArchitecture().GetTriple(); |
| switch (triple_ref.getOS()) |
| { |
| case llvm::Triple::Darwin: |
| case llvm::Triple::MacOSX: |
| case llvm::Triple::IOS: |
| create = triple_ref.getVendor() == llvm::Triple::Apple; |
| break; |
| default: |
| create = false; |
| break; |
| } |
| } |
| } |
| |
| if (create) |
| { |
| process->SetCanJIT(false); |
| return new DynamicLoaderDarwinKernel (process); |
| } |
| return NULL; |
| } |
| |
| //---------------------------------------------------------------------- |
| // Constructor |
| //---------------------------------------------------------------------- |
| DynamicLoaderDarwinKernel::DynamicLoaderDarwinKernel (Process* process) : |
| DynamicLoader(process), |
| m_kernel(), |
| m_kext_summary_header_ptr_addr (), |
| m_kext_summary_header_addr (), |
| m_kext_summary_header (), |
| m_kext_summaries(), |
| m_mutex(Mutex::eMutexTypeRecursive), |
| m_break_id (LLDB_INVALID_BREAK_ID) |
| { |
| } |
| |
| //---------------------------------------------------------------------- |
| // Destructor |
| //---------------------------------------------------------------------- |
| DynamicLoaderDarwinKernel::~DynamicLoaderDarwinKernel() |
| { |
| Clear(true); |
| } |
| |
| void |
| DynamicLoaderDarwinKernel::UpdateIfNeeded() |
| { |
| LoadKernelModuleIfNeeded(); |
| SetNotificationBreakpointIfNeeded (); |
| } |
| //------------------------------------------------------------------ |
| /// Called after attaching a process. |
| /// |
| /// Allow DynamicLoader plug-ins to execute some code after |
| /// attaching to a process. |
| //------------------------------------------------------------------ |
| void |
| DynamicLoaderDarwinKernel::DidAttach () |
| { |
| PrivateInitialize(m_process); |
| UpdateIfNeeded(); |
| } |
| |
| //------------------------------------------------------------------ |
| /// Called after attaching a process. |
| /// |
| /// Allow DynamicLoader plug-ins to execute some code after |
| /// attaching to a process. |
| //------------------------------------------------------------------ |
| void |
| DynamicLoaderDarwinKernel::DidLaunch () |
| { |
| PrivateInitialize(m_process); |
| UpdateIfNeeded(); |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // Clear out the state of this class. |
| //---------------------------------------------------------------------- |
| void |
| DynamicLoaderDarwinKernel::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_kernel.Clear(false); |
| m_kext_summary_header_ptr_addr.Clear(); |
| m_kext_summary_header_addr.Clear(); |
| m_kext_summaries.clear(); |
| m_break_id = LLDB_INVALID_BREAK_ID; |
| } |
| |
| |
| bool |
| DynamicLoaderDarwinKernel::OSKextLoadedKextSummary::LoadImageAtFileAddress (Process *process) |
| { |
| if (IsLoaded()) |
| return true; |
| |
| if (module_sp) |
| { |
| bool changed = false; |
| if (module_sp->SetLoadAddress (process->GetTarget(), 0, changed)) |
| load_process_stop_id = process->GetStopID(); |
| } |
| return false; |
| } |
| |
| bool |
| DynamicLoaderDarwinKernel::OSKextLoadedKextSummary::LoadImageUsingMemoryModule (Process *process) |
| { |
| if (IsLoaded()) |
| return true; |
| |
| bool uuid_is_valid = uuid.IsValid(); |
| bool memory_module_is_kernel = false; |
| |
| Target &target = process->GetTarget(); |
| ModuleSP memory_module_sp; |
| // Use the memory module as the module if we have one... |
| if (address != LLDB_INVALID_ADDRESS) |
| { |
| FileSpec file_spec; |
| if (module_sp) |
| file_spec = module_sp->GetFileSpec(); |
| else |
| file_spec.SetFile (name, false); |
| |
| memory_module_sp = process->ReadModuleFromMemory (file_spec, address, false, false); |
| if (memory_module_sp && !uuid_is_valid) |
| { |
| uuid = memory_module_sp->GetUUID(); |
| uuid_is_valid = uuid.IsValid(); |
| } |
| if (memory_module_sp->GetObjectFile() |
| && memory_module_sp->GetObjectFile()->GetType() == ObjectFile::eTypeExecutable |
| && memory_module_sp->GetObjectFile()->GetStrata() == ObjectFile::eStrataKernel) |
| { |
| memory_module_is_kernel = true; |
| if (memory_module_sp->GetArchitecture().IsValid()) |
| { |
| target.SetArchitecture(memory_module_sp->GetArchitecture()); |
| } |
| } |
| } |
| |
| if (!module_sp) |
| { |
| if (uuid_is_valid) |
| { |
| ModuleList &target_images = target.GetImages(); |
| module_sp = target_images.FindModule(uuid); |
| |
| // Ask the Target to find this file on the local system, if possible. |
| // This will search in the list of currently-loaded files, look in the |
| // standard search paths on the system, and on a Mac it will try calling |
| // the DebugSymbols framework with the UUID to find the binary via its |
| // search methods. |
| |
| if (!module_sp) |
| { |
| ModuleSpec module_spec; |
| module_spec.GetUUID() = uuid; |
| module_spec.GetArchitecture() = target.GetArchitecture(); |
| module_sp = target.GetSharedModule (module_spec); |
| } |
| } |
| } |
| |
| |
| if (memory_module_sp) |
| { |
| if (module_sp) |
| { |
| if (module_sp->GetUUID() == memory_module_sp->GetUUID()) |
| { |
| ObjectFile *ondisk_object_file = module_sp->GetObjectFile(); |
| ObjectFile *memory_object_file = memory_module_sp->GetObjectFile(); |
| if (memory_object_file && ondisk_object_file) |
| { |
| SectionList *ondisk_section_list = ondisk_object_file->GetSectionList (); |
| SectionList *memory_section_list = memory_object_file->GetSectionList (); |
| if (memory_section_list && ondisk_section_list) |
| { |
| const uint32_t num_ondisk_sections = ondisk_section_list->GetSize(); |
| // There may be CTF sections in the memory image so we can't |
| // always just compare the number of sections (which are actually |
| // segments in mach-o parlance) |
| uint32_t sect_idx = 0; |
| |
| // Use the memory_module's addresses for each section to set the |
| // file module's load address as appropriate. We don't want to use |
| // a single slide value for the entire kext - different segments may |
| // be slid different amounts by the kext loader. |
| |
| uint32_t num_sections_loaded = 0; |
| for (sect_idx=0; sect_idx<num_ondisk_sections; ++sect_idx) |
| { |
| SectionSP ondisk_section_sp(ondisk_section_list->GetSectionAtIndex(sect_idx)); |
| if (ondisk_section_sp) |
| { |
| const Section *memory_section = memory_section_list->FindSectionByName(ondisk_section_sp->GetName()).get(); |
| if (memory_section) |
| { |
| target.GetSectionLoadList().SetSectionLoadAddress (ondisk_section_sp, memory_section->GetFileAddress()); |
| ++num_sections_loaded; |
| } |
| } |
| } |
| if (num_sections_loaded > 0) |
| load_process_stop_id = process->GetStopID(); |
| else |
| module_sp.reset(); // No sections were loaded |
| } |
| else |
| module_sp.reset(); // One or both section lists |
| } |
| else |
| module_sp.reset(); // One or both object files missing |
| } |
| else |
| module_sp.reset(); // UUID mismatch |
| } |
| |
| // Use the memory module as the module if we didn't find an on-disk file |
| // here on the debug system. |
| if (!module_sp) |
| { |
| module_sp = memory_module_sp; |
| // Load the memory image in the target as all addresses are already correct |
| bool changed = false; |
| target.GetImages().Append (memory_module_sp); |
| if (module_sp->SetLoadAddress (target, 0, changed)) |
| load_process_stop_id = process->GetStopID(); |
| } |
| } |
| bool is_loaded = IsLoaded(); |
| |
| if (so_address.IsValid()) |
| { |
| if (is_loaded) |
| so_address.SetLoadAddress (address, &target); |
| else |
| target.GetImages().ResolveFileAddress (address, so_address); |
| |
| } |
| |
| if (is_loaded && module_sp && memory_module_is_kernel) |
| { |
| Stream *s = &target.GetDebugger().GetOutputStream(); |
| if (s) |
| { |
| char uuidbuf[64]; |
| s->Printf ("Kernel UUID: %s\n", module_sp->GetUUID().GetAsCString(uuidbuf, sizeof (uuidbuf))); |
| s->Printf ("Load Address: 0x%llx\n", address); |
| if (module_sp->GetFileSpec().GetDirectory().IsEmpty()) |
| { |
| s->Printf ("Loaded kernel file %s\n", module_sp->GetFileSpec().GetFilename().AsCString()); |
| } |
| else |
| { |
| s->Printf ("Loaded kernel file %s/%s\n", |
| module_sp->GetFileSpec().GetDirectory().AsCString(), |
| module_sp->GetFileSpec().GetFilename().AsCString()); |
| } |
| s->Flush (); |
| } |
| } |
| return is_loaded; |
| } |
| |
| uint32_t |
| DynamicLoaderDarwinKernel::OSKextLoadedKextSummary::GetAddressByteSize () |
| { |
| if (module_sp) |
| return module_sp->GetArchitecture().GetAddressByteSize(); |
| return 0; |
| } |
| |
| lldb::ByteOrder |
| DynamicLoaderDarwinKernel::OSKextLoadedKextSummary::GetByteOrder() |
| { |
| if (module_sp) |
| return module_sp->GetArchitecture().GetByteOrder(); |
| return lldb::endian::InlHostByteOrder(); |
| } |
| |
| lldb_private::ArchSpec |
| DynamicLoaderDarwinKernel::OSKextLoadedKextSummary::GetArchitecture () const |
| { |
| if (module_sp) |
| return module_sp->GetArchitecture(); |
| return lldb_private::ArchSpec (); |
| } |
| |
| |
| //---------------------------------------------------------------------- |
| // Load the kernel module and initialize the "m_kernel" member. Return |
| // true _only_ if the kernel is loaded the first time through (subsequent |
| // calls to this function should return false after the kernel has been |
| // already loaded). |
| //---------------------------------------------------------------------- |
| void |
| DynamicLoaderDarwinKernel::LoadKernelModuleIfNeeded() |
| { |
| if (!m_kext_summary_header_ptr_addr.IsValid()) |
| { |
| m_kernel.Clear(false); |
| m_kernel.module_sp = m_process->GetTarget().GetExecutableModule(); |
| |
| ConstString kernel_name("mach_kernel"); |
| if (m_kernel.module_sp.get() |
| && m_kernel.module_sp->GetObjectFile() |
| && !m_kernel.module_sp->GetObjectFile()->GetFileSpec().GetFilename().IsEmpty()) |
| { |
| kernel_name = m_kernel.module_sp->GetObjectFile()->GetFileSpec().GetFilename(); |
| } |
| strncpy (m_kernel.name, kernel_name.AsCString(), sizeof(m_kernel.name)); |
| m_kernel.name[sizeof (m_kernel.name) - 1] = '\0'; |
| |
| if (m_kernel.address == LLDB_INVALID_ADDRESS) |
| { |
| m_kernel.address = m_process->GetImageInfoAddress (); |
| if (m_kernel.address == LLDB_INVALID_ADDRESS && m_kernel.module_sp) |
| { |
| // We didn't get a hint from the process, so we will |
| // try the kernel at the address that it exists at in |
| // the file if we have one |
| ObjectFile *kernel_object_file = m_kernel.module_sp->GetObjectFile(); |
| if (kernel_object_file) |
| { |
| addr_t load_address = kernel_object_file->GetHeaderAddress().GetLoadAddress(&m_process->GetTarget()); |
| addr_t file_address = kernel_object_file->GetHeaderAddress().GetFileAddress(); |
| if (load_address != LLDB_INVALID_ADDRESS && load_address != 0) |
| { |
| m_kernel.address = load_address; |
| if (load_address != file_address) |
| { |
| // Don't accidentally relocate the kernel to the File address -- |
| // the Load address has already been set to its actual in-memory address. |
| // Mark it as IsLoaded. |
| m_kernel.load_process_stop_id = m_process->GetStopID(); |
| } |
| } |
| else |
| { |
| m_kernel.address = file_address; |
| } |
| } |
| } |
| } |
| |
| if (m_kernel.address != LLDB_INVALID_ADDRESS) |
| { |
| if (!m_kernel.LoadImageUsingMemoryModule (m_process)) |
| { |
| m_kernel.LoadImageAtFileAddress (m_process); |
| } |
| } |
| |
| if (m_kernel.IsLoaded()) |
| { |
| static ConstString kext_summary_symbol ("gLoadedKextSummaries"); |
| const Symbol *symbol = m_kernel.module_sp->FindFirstSymbolWithNameAndType (kext_summary_symbol, eSymbolTypeData); |
| if (symbol) |
| { |
| m_kext_summary_header_ptr_addr = symbol->GetAddress(); |
| // Update all image infos |
| ReadAllKextSummaries (); |
| } |
| } |
| else |
| { |
| m_kernel.Clear(false); |
| } |
| } |
| } |
| |
| //---------------------------------------------------------------------- |
| // 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 |
| DynamicLoaderDarwinKernel::BreakpointHitCallback (void *baton, |
| StoppointCallbackContext *context, |
| user_id_t break_id, |
| user_id_t break_loc_id) |
| { |
| return static_cast<DynamicLoaderDarwinKernel*>(baton)->BreakpointHit (context, break_id, break_loc_id); |
| } |
| |
| bool |
| DynamicLoaderDarwinKernel::BreakpointHit (StoppointCallbackContext *context, |
| user_id_t break_id, |
| user_id_t break_loc_id) |
| { |
| LogSP log(GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); |
| if (log) |
| log->Printf ("DynamicLoaderDarwinKernel::BreakpointHit (...)\n"); |
| |
| ReadAllKextSummaries (); |
| |
| if (log) |
| PutToLog(log.get()); |
| |
| return GetStopWhenImagesChange(); |
| } |
| |
| |
| bool |
| DynamicLoaderDarwinKernel::ReadKextSummaryHeader () |
| { |
| Mutex::Locker locker(m_mutex); |
| |
| // the all image infos is already valid for this process stop ID |
| |
| m_kext_summaries.clear(); |
| if (m_kext_summary_header_ptr_addr.IsValid()) |
| { |
| const uint32_t addr_size = m_kernel.GetAddressByteSize (); |
| const ByteOrder byte_order = m_kernel.GetByteOrder(); |
| Error error; |
| // Read enough bytes for a "OSKextLoadedKextSummaryHeader" structure |
| // which is currenty 4 uint32_t and a pointer. |
| uint8_t buf[24]; |
| DataExtractor data (buf, sizeof(buf), byte_order, addr_size); |
| const size_t count = 4 * sizeof(uint32_t) + addr_size; |
| const bool prefer_file_cache = false; |
| if (m_process->GetTarget().ReadPointerFromMemory (m_kext_summary_header_ptr_addr, |
| prefer_file_cache, |
| error, |
| m_kext_summary_header_addr)) |
| { |
| // We got a valid address for our kext summary header and make sure it isn't NULL |
| if (m_kext_summary_header_addr.IsValid() && |
| m_kext_summary_header_addr.GetFileAddress() != 0) |
| { |
| const size_t bytes_read = m_process->GetTarget().ReadMemory (m_kext_summary_header_addr, prefer_file_cache, buf, count, error); |
| if (bytes_read == count) |
| { |
| uint32_t offset = 0; |
| m_kext_summary_header.version = data.GetU32(&offset); |
| if (m_kext_summary_header.version >= 2) |
| { |
| m_kext_summary_header.entry_size = data.GetU32(&offset); |
| } |
| else |
| { |
| // Versions less than 2 didn't have an entry size, it was hard coded |
| m_kext_summary_header.entry_size = KERNEL_MODULE_ENTRY_SIZE_VERSION_1; |
| } |
| m_kext_summary_header.entry_count = data.GetU32(&offset); |
| return true; |
| } |
| } |
| } |
| } |
| m_kext_summary_header_addr.Clear(); |
| return false; |
| } |
| |
| |
| bool |
| DynamicLoaderDarwinKernel::ParseKextSummaries (const Address &kext_summary_addr, |
| uint32_t count) |
| { |
| OSKextLoadedKextSummary::collection kext_summaries; |
| LogSP log(GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); |
| if (log) |
| log->Printf ("Adding %d modules.\n", count); |
| |
| Mutex::Locker locker(m_mutex); |
| |
| if (!ReadKextSummaries (kext_summary_addr, count, kext_summaries)) |
| return false; |
| |
| Stream *s = &m_process->GetTarget().GetDebugger().GetOutputStream(); |
| if (s) |
| s->Printf ("Loading %d kext modules ", count); |
| for (uint32_t i = 0; i < count; i++) |
| { |
| if (!kext_summaries[i].LoadImageUsingMemoryModule (m_process)) |
| kext_summaries[i].LoadImageAtFileAddress (m_process); |
| |
| if (s) |
| s->Printf ("."); |
| |
| if (log) |
| kext_summaries[i].PutToLog (log.get()); |
| } |
| if (s) |
| { |
| s->Printf (" done.\n"); |
| s->Flush (); |
| } |
| |
| bool return_value = AddModulesUsingImageInfos (kext_summaries); |
| return return_value; |
| } |
| |
| // Adds the modules in image_infos to m_kext_summaries. |
| // NB don't call this passing in m_kext_summaries. |
| |
| bool |
| DynamicLoaderDarwinKernel::AddModulesUsingImageInfos (OSKextLoadedKextSummary::collection &image_infos) |
| { |
| // Now add these images to the main list. |
| ModuleList loaded_module_list; |
| |
| for (uint32_t idx = 0; idx < image_infos.size(); ++idx) |
| { |
| OSKextLoadedKextSummary &image_info = image_infos[idx]; |
| m_kext_summaries.push_back(image_info); |
| |
| if (image_info.module_sp && m_process->GetStopID() == image_info.load_process_stop_id) |
| loaded_module_list.AppendIfNeeded (image_infos[idx].module_sp); |
| } |
| |
| if (loaded_module_list.GetSize() > 0) |
| { |
| m_process->GetTarget().ModulesDidLoad (loaded_module_list); |
| } |
| return true; |
| } |
| |
| |
| uint32_t |
| DynamicLoaderDarwinKernel::ReadKextSummaries (const Address &kext_summary_addr, |
| uint32_t image_infos_count, |
| OSKextLoadedKextSummary::collection &image_infos) |
| { |
| const ByteOrder endian = m_kernel.GetByteOrder(); |
| const uint32_t addr_size = m_kernel.GetAddressByteSize(); |
| |
| image_infos.resize(image_infos_count); |
| const size_t count = image_infos.size() * m_kext_summary_header.entry_size; |
| DataBufferHeap data(count, 0); |
| Error error; |
| |
| const bool prefer_file_cache = false; |
| const size_t bytes_read = m_process->GetTarget().ReadMemory (kext_summary_addr, |
| prefer_file_cache, |
| data.GetBytes(), |
| data.GetByteSize(), |
| error); |
| if (bytes_read == count) |
| { |
| |
| DataExtractor extractor (data.GetBytes(), data.GetByteSize(), endian, addr_size); |
| uint32_t i=0; |
| for (uint32_t kext_summary_offset = 0; |
| i < image_infos.size() && extractor.ValidOffsetForDataOfSize(kext_summary_offset, m_kext_summary_header.entry_size); |
| ++i, kext_summary_offset += m_kext_summary_header.entry_size) |
| { |
| uint32_t offset = kext_summary_offset; |
| const void *name_data = extractor.GetData(&offset, KERNEL_MODULE_MAX_NAME); |
| if (name_data == NULL) |
| break; |
| memcpy (image_infos[i].name, name_data, KERNEL_MODULE_MAX_NAME); |
| image_infos[i].uuid.SetBytes(extractor.GetData (&offset, 16)); |
| image_infos[i].address = extractor.GetU64(&offset); |
| if (!image_infos[i].so_address.SetLoadAddress (image_infos[i].address, &m_process->GetTarget())) |
| m_process->GetTarget().GetImages().ResolveFileAddress (image_infos[i].address, image_infos[i].so_address); |
| image_infos[i].size = extractor.GetU64(&offset); |
| image_infos[i].version = extractor.GetU64(&offset); |
| image_infos[i].load_tag = extractor.GetU32(&offset); |
| image_infos[i].flags = extractor.GetU32(&offset); |
| if ((offset - kext_summary_offset) < m_kext_summary_header.entry_size) |
| { |
| image_infos[i].reference_list = extractor.GetU64(&offset); |
| } |
| else |
| { |
| image_infos[i].reference_list = 0; |
| } |
| // printf ("[%3u] %*.*s: address=0x%16.16llx, size=0x%16.16llx, version=0x%16.16llx, load_tag=0x%8.8x, flags=0x%8.8x\n", |
| // i, |
| // KERNEL_MODULE_MAX_NAME, KERNEL_MODULE_MAX_NAME, (char *)name_data, |
| // image_infos[i].address, |
| // image_infos[i].size, |
| // image_infos[i].version, |
| // image_infos[i].load_tag, |
| // image_infos[i].flags); |
| } |
| if (i < image_infos.size()) |
| image_infos.resize(i); |
| } |
| else |
| { |
| image_infos.clear(); |
| } |
| return image_infos.size(); |
| } |
| |
| bool |
| DynamicLoaderDarwinKernel::ReadAllKextSummaries () |
| { |
| LogSP log(GetLogIfAnyCategoriesSet (LIBLLDB_LOG_DYNAMIC_LOADER)); |
| |
| Mutex::Locker locker(m_mutex); |
| |
| if (ReadKextSummaryHeader ()) |
| { |
| if (m_kext_summary_header.entry_count > 0 && m_kext_summary_header_addr.IsValid()) |
| { |
| Address summary_addr (m_kext_summary_header_addr); |
| summary_addr.Slide(m_kext_summary_header.GetSize()); |
| if (!ParseKextSummaries (summary_addr, m_kext_summary_header.entry_count)) |
| { |
| m_kext_summaries.clear(); |
| } |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| //---------------------------------------------------------------------- |
| // Dump an image info structure to the file handle provided. |
| //---------------------------------------------------------------------- |
| void |
| DynamicLoaderDarwinKernel::OSKextLoadedKextSummary::PutToLog (Log *log) const |
| { |
| if (log == NULL) |
| return; |
| const uint8_t *u = (uint8_t *)uuid.GetBytes(); |
| |
| if (address == LLDB_INVALID_ADDRESS) |
| { |
| if (u) |
| { |
| log->Printf("\tuuid=%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 name=\"%s\" (UNLOADED)", |
| 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], |
| name); |
| } |
| else |
| log->Printf("\tname=\"%s\" (UNLOADED)", name); |
| } |
| else |
| { |
| if (u) |
| { |
| log->Printf("\taddr=0x%16.16llx size=0x%16.16llx version=0x%16.16llx load-tag=0x%8.8x flags=0x%8.8x ref-list=0x%16.16llx 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 name=\"%s\"", |
| address, size, version, load_tag, flags, reference_list, |
| 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], |
| name); |
| } |
| else |
| { |
| log->Printf("\t[0x%16.16llx - 0x%16.16llx) version=0x%16.16llx load-tag=0x%8.8x flags=0x%8.8x ref-list=0x%16.16llx name=\"%s\"", |
| address, address+size, version, load_tag, flags, reference_list, |
| name); |
| } |
| } |
| } |
| |
| //---------------------------------------------------------------------- |
| // Dump the _dyld_all_image_infos members and all current image infos |
| // that we have parsed to the file handle provided. |
| //---------------------------------------------------------------------- |
| void |
| DynamicLoaderDarwinKernel::PutToLog(Log *log) const |
| { |
| if (log == NULL) |
| return; |
| |
| Mutex::Locker locker(m_mutex); |
| log->Printf("gLoadedKextSummaries = 0x%16.16llx { version=%u, entry_size=%u, entry_count=%u }", |
| m_kext_summary_header_addr.GetFileAddress(), |
| m_kext_summary_header.version, |
| m_kext_summary_header.entry_size, |
| m_kext_summary_header.entry_count); |
| |
| size_t i; |
| const size_t count = m_kext_summaries.size(); |
| if (count > 0) |
| { |
| log->PutCString("Loaded:"); |
| for (i = 0; i<count; i++) |
| m_kext_summaries[i].PutToLog(log); |
| } |
| } |
| |
| void |
| DynamicLoaderDarwinKernel::PrivateInitialize(Process *process) |
| { |
| DEBUG_PRINTF("DynamicLoaderDarwinKernel::%s() process state = %s\n", __FUNCTION__, StateAsCString(m_process->GetState())); |
| Clear(true); |
| m_process = process; |
| } |
| |
| void |
| DynamicLoaderDarwinKernel::SetNotificationBreakpointIfNeeded () |
| { |
| if (m_break_id == LLDB_INVALID_BREAK_ID && m_kernel.module_sp) |
| { |
| DEBUG_PRINTF("DynamicLoaderDarwinKernel::%s() process state = %s\n", __FUNCTION__, StateAsCString(m_process->GetState())); |
| |
| |
| const bool internal_bp = true; |
| const LazyBool skip_prologue = eLazyBoolNo; |
| FileSpecList module_spec_list; |
| module_spec_list.Append (m_kernel.module_sp->GetFileSpec()); |
| Breakpoint *bp = m_process->GetTarget().CreateBreakpoint (&module_spec_list, |
| NULL, |
| "OSKextLoadedKextSummariesUpdated", |
| eFunctionNameTypeFull, |
| skip_prologue, |
| internal_bp).get(); |
| |
| bp->SetCallback (DynamicLoaderDarwinKernel::BreakpointHitCallback, this, true); |
| m_break_id = bp->GetID(); |
| } |
| } |
| |
| //---------------------------------------------------------------------- |
| // Member function that gets called when the process state changes. |
| //---------------------------------------------------------------------- |
| void |
| DynamicLoaderDarwinKernel::PrivateProcessStateChanged (Process *process, StateType state) |
| { |
| DEBUG_PRINTF("DynamicLoaderDarwinKernel::%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: |
| UpdateIfNeeded(); |
| break; |
| |
| case eStateRunning: |
| case eStateStepping: |
| case eStateCrashed: |
| case eStateSuspended: |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| ThreadPlanSP |
| DynamicLoaderDarwinKernel::GetStepThroughTrampolinePlan (Thread &thread, bool stop_others) |
| { |
| ThreadPlanSP thread_plan_sp; |
| LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_STEP)); |
| if (log) |
| log->Printf ("Could not find symbol for step through."); |
| return thread_plan_sp; |
| } |
| |
| Error |
| DynamicLoaderDarwinKernel::CanLoadImage () |
| { |
| Error error; |
| error.SetErrorString("always unsafe to load or unload shared libraries in the darwin kernel"); |
| return error; |
| } |
| |
| void |
| DynamicLoaderDarwinKernel::Initialize() |
| { |
| PluginManager::RegisterPlugin (GetPluginNameStatic(), |
| GetPluginDescriptionStatic(), |
| CreateInstance); |
| } |
| |
| void |
| DynamicLoaderDarwinKernel::Terminate() |
| { |
| PluginManager::UnregisterPlugin (CreateInstance); |
| } |
| |
| |
| const char * |
| DynamicLoaderDarwinKernel::GetPluginNameStatic() |
| { |
| return "dynamic-loader.macosx-kernel"; |
| } |
| |
| const char * |
| DynamicLoaderDarwinKernel::GetPluginDescriptionStatic() |
| { |
| return "Dynamic loader plug-in that watches for shared library loads/unloads in the MacOSX kernel."; |
| } |
| |
| |
| //------------------------------------------------------------------ |
| // PluginInterface protocol |
| //------------------------------------------------------------------ |
| const char * |
| DynamicLoaderDarwinKernel::GetPluginName() |
| { |
| return "DynamicLoaderDarwinKernel"; |
| } |
| |
| const char * |
| DynamicLoaderDarwinKernel::GetShortPluginName() |
| { |
| return GetPluginNameStatic(); |
| } |
| |
| uint32_t |
| DynamicLoaderDarwinKernel::GetPluginVersion() |
| { |
| return 1; |
| } |
| |
| lldb::ByteOrder |
| DynamicLoaderDarwinKernel::GetByteOrderFromMagic (uint32_t magic) |
| { |
| switch (magic) |
| { |
| case llvm::MachO::HeaderMagic32: |
| case llvm::MachO::HeaderMagic64: |
| return lldb::endian::InlHostByteOrder(); |
| |
| case llvm::MachO::HeaderMagic32Swapped: |
| case llvm::MachO::HeaderMagic64Swapped: |
| if (lldb::endian::InlHostByteOrder() == lldb::eByteOrderBig) |
| return lldb::eByteOrderLittle; |
| else |
| return lldb::eByteOrderBig; |
| |
| default: |
| break; |
| } |
| return lldb::eByteOrderInvalid; |
| } |
| |