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DynamicLoaderMacOSXDYLD.cpp
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1 //===-- DynamicLoaderMacOSXDYLD.cpp ---------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
10 #include "DynamicLoaderDarwin.h"
11 #include "DynamicLoaderMacOS.h"
15 #include "lldb/Core/Debugger.h"
16 #include "lldb/Core/Module.h"
17 #include "lldb/Core/ModuleSpec.h"
19 #include "lldb/Core/Section.h"
20 #include "lldb/Symbol/Function.h"
21 #include "lldb/Symbol/ObjectFile.h"
22 #include "lldb/Target/ABI.h"
24 #include "lldb/Target/StackFrame.h"
25 #include "lldb/Target/Target.h"
26 #include "lldb/Target/Thread.h"
30 #include "lldb/Utility/Log.h"
31 #include "lldb/Utility/State.h"
32 
33 //#define ENABLE_DEBUG_PRINTF // COMMENT THIS LINE OUT PRIOR TO CHECKIN
34 #ifdef ENABLE_DEBUG_PRINTF
35 #include <cstdio>
36 #define DEBUG_PRINTF(fmt, ...) printf(fmt, ##__VA_ARGS__)
37 #else
38 #define DEBUG_PRINTF(fmt, ...)
39 #endif
40 
41 #ifndef __APPLE__
43 #else
44 #include <uuid/uuid.h>
45 #endif
46 
47 using namespace lldb;
48 using namespace lldb_private;
49 
51 
52 // Create an instance of this class. This function is filled into the plugin
53 // info class that gets handed out by the plugin factory and allows the lldb to
54 // instantiate an instance of this class.
55 DynamicLoader *DynamicLoaderMacOSXDYLD::CreateInstance(Process *process,
56  bool force) {
57  bool create = force;
58  if (!create) {
59  create = true;
60  Module *exe_module = process->GetTarget().GetExecutableModulePointer();
61  if (exe_module) {
62  ObjectFile *object_file = exe_module->GetObjectFile();
63  if (object_file) {
64  create = (object_file->GetStrata() == ObjectFile::eStrataUser);
65  }
66  }
67 
68  if (create) {
69  const llvm::Triple &triple_ref =
70  process->GetTarget().GetArchitecture().GetTriple();
71  switch (triple_ref.getOS()) {
72  case llvm::Triple::Darwin:
73  case llvm::Triple::MacOSX:
74  case llvm::Triple::IOS:
75  case llvm::Triple::TvOS:
76  case llvm::Triple::WatchOS:
77  // NEED_BRIDGEOS_TRIPLE case llvm::Triple::BridgeOS:
78  create = triple_ref.getVendor() == llvm::Triple::Apple;
79  break;
80  default:
81  create = false;
82  break;
83  }
84  }
85  }
86 
87  if (UseDYLDSPI(process)) {
88  create = false;
89  }
90 
91  if (create)
92  return new DynamicLoaderMacOSXDYLD(process);
93  return nullptr;
94 }
95 
96 // Constructor
98  : DynamicLoaderDarwin(process),
99  m_dyld_all_image_infos_addr(LLDB_INVALID_ADDRESS),
100  m_dyld_all_image_infos(), m_dyld_all_image_infos_stop_id(UINT32_MAX),
101  m_break_id(LLDB_INVALID_BREAK_ID), m_mutex(),
102  m_process_image_addr_is_all_images_infos(false) {}
103 
104 // Destructor
108 }
109 
111  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
112  bool did_exec = false;
113  if (m_process) {
114  // If we are stopped after an exec, we will have only one thread...
115  if (m_process->GetThreadList().GetSize() == 1) {
116  // We know if a process has exec'ed if our "m_dyld_all_image_infos_addr"
117  // value differs from the Process' image info address. When a process
118  // execs itself it might cause a change if ASLR is enabled.
119  const addr_t shlib_addr = m_process->GetImageInfoAddress();
121  shlib_addr != m_dyld_all_image_infos_addr) {
122  // The image info address from the process is the
123  // 'dyld_all_image_infos' address and it has changed.
124  did_exec = true;
126  shlib_addr == m_dyld.address) {
127  // The image info address from the process is the mach_header address
128  // for dyld and it has changed.
129  did_exec = true;
130  } else {
131  // ASLR might be disabled and dyld could have ended up in the same
132  // location. We should try and detect if we are stopped at
133  // '_dyld_start'
134  ThreadSP thread_sp(m_process->GetThreadList().GetThreadAtIndex(0));
135  if (thread_sp) {
136  lldb::StackFrameSP frame_sp(thread_sp->GetStackFrameAtIndex(0));
137  if (frame_sp) {
138  const Symbol *symbol =
139  frame_sp->GetSymbolContext(eSymbolContextSymbol).symbol;
140  if (symbol) {
141  if (symbol->GetName() == "_dyld_start")
142  did_exec = true;
143  }
144  }
145  }
146  }
147 
148  if (did_exec) {
149  m_libpthread_module_wp.reset();
151  }
152  }
153  }
154  return did_exec;
155 }
156 
157 // Clear out the state of this class.
159  std::lock_guard<std::recursive_mutex> guard(m_mutex);
160 
163 
167 }
168 
169 // Check if we have found DYLD yet
172 }
173 
177  }
178 }
179 
180 // Try and figure out where dyld is by first asking the Process if it knows
181 // (which currently calls down in the lldb::Process to get the DYLD info
182 // (available on SnowLeopard only). If that fails, then check in the default
183 // addresses.
186  // Check the image info addr as it might point to the mach header for dyld,
187  // or it might point to the dyld_all_image_infos struct
188  const addr_t shlib_addr = m_process->GetImageInfoAddress();
189  if (shlib_addr != LLDB_INVALID_ADDRESS) {
190  ByteOrder byte_order =
192  uint8_t buf[4];
193  DataExtractor data(buf, sizeof(buf), byte_order, 4);
194  Status error;
195  if (m_process->ReadMemory(shlib_addr, buf, 4, error) == 4) {
196  lldb::offset_t offset = 0;
197  uint32_t magic = data.GetU32(&offset);
198  switch (magic) {
199  case llvm::MachO::MH_MAGIC:
200  case llvm::MachO::MH_MAGIC_64:
201  case llvm::MachO::MH_CIGAM:
202  case llvm::MachO::MH_CIGAM_64:
205  return;
206 
207  default:
208  break;
209  }
210  }
211  // Maybe it points to the all image infos?
212  m_dyld_all_image_infos_addr = shlib_addr;
214  }
215  }
216 
222  else
224  m_dyld_all_image_infos_addr & 0xfffffffffff00000ull);
225  return;
226  }
227  }
228 
229  // Check some default values
231 
232  if (executable) {
233  const ArchSpec &exe_arch = executable->GetArchitecture();
234  if (exe_arch.GetAddressByteSize() == 8) {
236  } else if (exe_arch.GetMachine() == llvm::Triple::arm ||
237  exe_arch.GetMachine() == llvm::Triple::thumb ||
238  exe_arch.GetMachine() == llvm::Triple::aarch64 ||
239  exe_arch.GetMachine() == llvm::Triple::aarch64_32) {
241  } else {
243  }
244  }
245  return;
246 }
247 
248 // Assume that dyld is in memory at ADDR and try to parse it's load commands
250  lldb::addr_t addr) {
251  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
252  DataExtractor data; // Load command data
253  static ConstString g_dyld_all_image_infos("dyld_all_image_infos");
254  if (ReadMachHeader(addr, &m_dyld.header, &data)) {
255  if (m_dyld.header.filetype == llvm::MachO::MH_DYLINKER) {
256  m_dyld.address = addr;
257  ModuleSP dyld_module_sp;
258  if (ParseLoadCommands(data, m_dyld, &m_dyld.file_spec)) {
259  if (m_dyld.file_spec) {
261  }
262  }
263  dyld_module_sp = GetDYLDModule();
264 
265  Target &target = m_process->GetTarget();
266 
268  dyld_module_sp.get()) {
269  const Symbol *symbol = dyld_module_sp->FindFirstSymbolWithNameAndType(
270  g_dyld_all_image_infos, eSymbolTypeData);
271  if (symbol)
272  m_dyld_all_image_infos_addr = symbol->GetLoadAddress(&target);
273  }
274 
275  // Update all image infos
277 
278  // If we didn't have an executable before, but now we do, then the dyld
279  // module shared pointer might be unique and we may need to add it again
280  // (since Target::SetExecutableModule() will clear the images). So append
281  // the dyld module back to the list if it is
282  /// unique!
283  if (dyld_module_sp) {
284  target.GetImages().AppendIfNeeded(dyld_module_sp);
285 
286  // At this point we should have read in dyld's module, and so we should
287  // set breakpoints in it:
288  ModuleList modules;
289  modules.Append(dyld_module_sp);
290  target.ModulesDidLoad(modules);
291  SetDYLDModule(dyld_module_sp);
292  }
293 
294  return true;
295  }
296  }
297  return false;
298 }
299 
302 }
303 
304 // Static callback function that gets called when our DYLD notification
305 // breakpoint gets hit. We update all of our image infos and then let our super
306 // class DynamicLoader class decide if we should stop or not (based on global
307 // preference).
309  void *baton, StoppointCallbackContext *context, lldb::user_id_t break_id,
310  lldb::user_id_t break_loc_id) {
311  // Let the event know that the images have changed
312  // DYLD passes three arguments to the notification breakpoint.
313  // Arg1: enum dyld_image_mode mode - 0 = adding, 1 = removing Arg2: uint32_t
314  // infoCount - Number of shared libraries added Arg3: dyld_image_info
315  // info[] - Array of structs of the form:
316  // const struct mach_header
317  // *imageLoadAddress
318  // const char *imageFilePath
319  // uintptr_t imageFileModDate (a time_t)
320 
321  DynamicLoaderMacOSXDYLD *dyld_instance = (DynamicLoaderMacOSXDYLD *)baton;
322 
323  // First step is to see if we've already initialized the all image infos. If
324  // we haven't then this function will do so and return true. In the course
325  // of initializing the all_image_infos it will read the complete current
326  // state, so we don't need to figure out what has changed from the data
327  // passed in to us.
328 
329  ExecutionContext exe_ctx(context->exe_ctx_ref);
330  Process *process = exe_ctx.GetProcessPtr();
331 
332  // This is a sanity check just in case this dyld_instance is an old dyld
333  // plugin's breakpoint still lying around.
334  if (process != dyld_instance->m_process)
335  return false;
336 
337  if (dyld_instance->InitializeFromAllImageInfos())
338  return dyld_instance->GetStopWhenImagesChange();
339 
340  const lldb::ABISP &abi = process->GetABI();
341  if (abi) {
342  // Build up the value array to store the three arguments given above, then
343  // get the values from the ABI:
344 
345  TypeSystemClang *clang_ast_context =
346  ScratchTypeSystemClang::GetForTarget(process->GetTarget());
347  if (!clang_ast_context)
348  return false;
349 
350  ValueList argument_values;
351  Value input_value;
352 
353  CompilerType clang_void_ptr_type =
354  clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType();
355  CompilerType clang_uint32_type =
356  clang_ast_context->GetBuiltinTypeForEncodingAndBitSize(
357  lldb::eEncodingUint, 32);
358  input_value.SetValueType(Value::ValueType::Scalar);
359  input_value.SetCompilerType(clang_uint32_type);
360  // input_value.SetContext (Value::eContextTypeClangType,
361  // clang_uint32_type);
362  argument_values.PushValue(input_value);
363  argument_values.PushValue(input_value);
364  input_value.SetCompilerType(clang_void_ptr_type);
365  // input_value.SetContext (Value::eContextTypeClangType,
366  // clang_void_ptr_type);
367  argument_values.PushValue(input_value);
368 
369  if (abi->GetArgumentValues(exe_ctx.GetThreadRef(), argument_values)) {
370  uint32_t dyld_mode =
371  argument_values.GetValueAtIndex(0)->GetScalar().UInt(-1);
372  if (dyld_mode != static_cast<uint32_t>(-1)) {
373  // Okay the mode was right, now get the number of elements, and the
374  // array of new elements...
375  uint32_t image_infos_count =
376  argument_values.GetValueAtIndex(1)->GetScalar().UInt(-1);
377  if (image_infos_count != static_cast<uint32_t>(-1)) {
378  // Got the number added, now go through the array of added elements,
379  // putting out the mach header address, and adding the image. Note,
380  // I'm not putting in logging here, since the AddModules &
381  // RemoveModules functions do all the logging internally.
382 
383  lldb::addr_t image_infos_addr =
384  argument_values.GetValueAtIndex(2)->GetScalar().ULongLong();
385  if (dyld_mode == 0) {
386  // This is add:
387  dyld_instance->AddModulesUsingImageInfosAddress(image_infos_addr,
388  image_infos_count);
389  } else {
390  // This is remove:
392  image_infos_addr, image_infos_count);
393  }
394  }
395  }
396  }
397  } else {
398  process->GetTarget().GetDebugger().GetAsyncErrorStream()->Printf(
399  "No ABI plugin located for triple %s -- shared libraries will not be "
400  "registered!\n",
401  process->GetTarget().GetArchitecture().GetTriple().getTriple().c_str());
402  }
403 
404  // Return true to stop the target, false to just let the target run
405  return dyld_instance->GetStopWhenImagesChange();
406 }
407 
409  std::lock_guard<std::recursive_mutex> guard(m_mutex);
410 
411  // the all image infos is already valid for this process stop ID
413  return true;
414 
417  ByteOrder byte_order =
419  uint32_t addr_size =
421 
422  uint8_t buf[256];
423  DataExtractor data(buf, sizeof(buf), byte_order, addr_size);
424  lldb::offset_t offset = 0;
425 
426  const size_t count_v2 = sizeof(uint32_t) + // version
427  sizeof(uint32_t) + // infoArrayCount
428  addr_size + // infoArray
429  addr_size + // notification
430  addr_size + // processDetachedFromSharedRegion +
431  // libSystemInitialized + pad
432  addr_size; // dyldImageLoadAddress
433  const size_t count_v11 = count_v2 + addr_size + // jitInfo
434  addr_size + // dyldVersion
435  addr_size + // errorMessage
436  addr_size + // terminationFlags
437  addr_size + // coreSymbolicationShmPage
438  addr_size + // systemOrderFlag
439  addr_size + // uuidArrayCount
440  addr_size + // uuidArray
441  addr_size + // dyldAllImageInfosAddress
442  addr_size + // initialImageCount
443  addr_size + // errorKind
444  addr_size + // errorClientOfDylibPath
445  addr_size + // errorTargetDylibPath
446  addr_size; // errorSymbol
447  const size_t count_v13 = count_v11 + addr_size + // sharedCacheSlide
448  sizeof(uuid_t); // sharedCacheUUID
449  UNUSED_IF_ASSERT_DISABLED(count_v13);
450  assert(sizeof(buf) >= count_v13);
451 
452  Status error;
454  4) {
455  m_dyld_all_image_infos.version = data.GetU32(&offset);
456  // If anything in the high byte is set, we probably got the byte order
457  // incorrect (the process might not have it set correctly yet due to
458  // attaching to a program without a specified file).
459  if (m_dyld_all_image_infos.version & 0xff000000) {
460  // We have guessed the wrong byte order. Swap it and try reading the
461  // version again.
462  if (byte_order == eByteOrderLittle)
463  byte_order = eByteOrderBig;
464  else
465  byte_order = eByteOrderLittle;
466 
467  data.SetByteOrder(byte_order);
468  offset = 0;
469  m_dyld_all_image_infos.version = data.GetU32(&offset);
470  }
471  } else {
472  return false;
473  }
474 
475  const size_t count =
476  (m_dyld_all_image_infos.version >= 11) ? count_v11 : count_v2;
477 
478  const size_t bytes_read =
480  if (bytes_read == count) {
481  offset = 0;
482  m_dyld_all_image_infos.version = data.GetU32(&offset);
487  data.GetU8(&offset);
489  // Adjust for padding.
490  offset += addr_size - 2;
492  if (m_dyld_all_image_infos.version >= 11) {
493  offset += addr_size * 8;
494  uint64_t dyld_all_image_infos_addr = data.GetAddress(&offset);
495 
496  // When we started, we were given the actual address of the
497  // all_image_infos struct (probably via TASK_DYLD_INFO) in memory -
498  // this address is stored in m_dyld_all_image_infos_addr and is the
499  // most accurate address we have.
500 
501  // We read the dyld_all_image_infos struct from memory; it contains its
502  // own address. If the address in the struct does not match the actual
503  // address, the dyld we're looking at has been loaded at a different
504  // location (slid) from where it intended to load. The addresses in
505  // the dyld_all_image_infos struct are the original, non-slid
506  // addresses, and need to be adjusted. Most importantly the address of
507  // dyld and the notification address need to be adjusted.
508 
509  if (dyld_all_image_infos_addr != m_dyld_all_image_infos_addr) {
510  uint64_t image_infos_offset =
511  dyld_all_image_infos_addr -
513  uint64_t notification_offset =
517  m_dyld_all_image_infos_addr - image_infos_offset;
519  m_dyld_all_image_infos.dyldImageLoadAddress + notification_offset;
520  }
521  }
523  return true;
524  }
525  }
526  return false;
527 }
528 
530  lldb::addr_t image_infos_addr, uint32_t image_infos_count) {
531  ImageInfo::collection image_infos;
533  LLDB_LOGF(log, "Adding %d modules.\n", image_infos_count);
534 
535  std::lock_guard<std::recursive_mutex> guard(m_mutex);
536  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
538  return true;
539 
540  StructuredData::ObjectSP image_infos_json_sp =
541  m_process->GetLoadedDynamicLibrariesInfos(image_infos_addr,
542  image_infos_count);
543  if (image_infos_json_sp.get() && image_infos_json_sp->GetAsDictionary() &&
544  image_infos_json_sp->GetAsDictionary()->HasKey("images") &&
545  image_infos_json_sp->GetAsDictionary()
546  ->GetValueForKey("images")
547  ->GetAsArray() &&
548  image_infos_json_sp->GetAsDictionary()
549  ->GetValueForKey("images")
550  ->GetAsArray()
551  ->GetSize() == image_infos_count) {
552  bool return_value = false;
553  if (JSONImageInformationIntoImageInfo(image_infos_json_sp, image_infos)) {
555  return_value = AddModulesUsingImageInfos(image_infos);
556  }
558  return return_value;
559  }
560 
561  if (!ReadImageInfos(image_infos_addr, image_infos_count, image_infos))
562  return false;
563 
564  UpdateImageInfosHeaderAndLoadCommands(image_infos, image_infos_count, false);
565  bool return_value = AddModulesUsingImageInfos(image_infos);
567  return return_value;
568 }
569 
571  lldb::addr_t image_infos_addr, uint32_t image_infos_count) {
572  ImageInfo::collection image_infos;
574 
575  std::lock_guard<std::recursive_mutex> guard(m_mutex);
576  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
578  return true;
579 
580  // First read in the image_infos for the removed modules, and their headers &
581  // load commands.
582  if (!ReadImageInfos(image_infos_addr, image_infos_count, image_infos)) {
583  if (log)
584  log->PutCString("Failed reading image infos array.");
585  return false;
586  }
587 
588  LLDB_LOGF(log, "Removing %d modules.", image_infos_count);
589 
590  ModuleList unloaded_module_list;
591  for (uint32_t idx = 0; idx < image_infos.size(); ++idx) {
592  if (log) {
593  LLDB_LOGF(log, "Removing module at address=0x%16.16" PRIx64 ".",
594  image_infos[idx].address);
595  image_infos[idx].PutToLog(log);
596  }
597 
598  // Remove this image_infos from the m_all_image_infos. We do the
599  // comparison by address rather than by file spec because we can have many
600  // modules with the same "file spec" in the case that they are modules
601  // loaded from memory.
602  //
603  // Also copy over the uuid from the old entry to the removed entry so we
604  // can use it to lookup the module in the module list.
605 
606  ImageInfo::collection::iterator pos, end = m_dyld_image_infos.end();
607  for (pos = m_dyld_image_infos.begin(); pos != end; pos++) {
608  if (image_infos[idx].address == (*pos).address) {
609  image_infos[idx].uuid = (*pos).uuid;
610 
611  // Add the module from this image_info to the "unloaded_module_list".
612  // We'll remove them all at one go later on.
613 
614  ModuleSP unload_image_module_sp(
615  FindTargetModuleForImageInfo(image_infos[idx], false, nullptr));
616  if (unload_image_module_sp.get()) {
617  // When we unload, be sure to use the image info from the old list,
618  // since that has sections correctly filled in.
619  UnloadModuleSections(unload_image_module_sp.get(), *pos);
620  unloaded_module_list.AppendIfNeeded(unload_image_module_sp);
621  } else {
622  if (log) {
623  LLDB_LOGF(log, "Could not find module for unloading info entry:");
624  image_infos[idx].PutToLog(log);
625  }
626  }
627 
628  // Then remove it from the m_dyld_image_infos:
629 
630  m_dyld_image_infos.erase(pos);
631  break;
632  }
633  }
634 
635  if (pos == end) {
636  if (log) {
637  LLDB_LOGF(log, "Could not find image_info entry for unloading image:");
638  image_infos[idx].PutToLog(log);
639  }
640  }
641  }
642  if (unloaded_module_list.GetSize() > 0) {
643  if (log) {
644  log->PutCString("Unloaded:");
645  unloaded_module_list.LogUUIDAndPaths(
646  log, "DynamicLoaderMacOSXDYLD::ModulesDidUnload");
647  }
648  m_process->GetTarget().GetImages().Remove(unloaded_module_list);
649  }
651  return true;
652 }
653 
655  lldb::addr_t image_infos_addr, uint32_t image_infos_count,
656  ImageInfo::collection &image_infos) {
657  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
658  const ByteOrder endian = GetByteOrderFromMagic(m_dyld.header.magic);
659  const uint32_t addr_size = m_dyld.GetAddressByteSize();
660 
661  image_infos.resize(image_infos_count);
662  const size_t count = image_infos.size() * 3 * addr_size;
663  DataBufferHeap info_data(count, 0);
664  Status error;
665  const size_t bytes_read = m_process->ReadMemory(
666  image_infos_addr, info_data.GetBytes(), info_data.GetByteSize(), error);
667  if (bytes_read == count) {
668  lldb::offset_t info_data_offset = 0;
669  DataExtractor info_data_ref(info_data.GetBytes(), info_data.GetByteSize(),
670  endian, addr_size);
671  for (size_t i = 0;
672  i < image_infos.size() && info_data_ref.ValidOffset(info_data_offset);
673  i++) {
674  image_infos[i].address = info_data_ref.GetAddress(&info_data_offset);
675  lldb::addr_t path_addr = info_data_ref.GetAddress(&info_data_offset);
676  image_infos[i].mod_date = info_data_ref.GetAddress(&info_data_offset);
677 
678  char raw_path[PATH_MAX];
679  m_process->ReadCStringFromMemory(path_addr, raw_path, sizeof(raw_path),
680  error);
681  // don't resolve the path
682  if (error.Success()) {
683  image_infos[i].file_spec.SetFile(raw_path, FileSpec::Style::native);
684  }
685  }
686  return true;
687  } else {
688  return false;
689  }
690 }
691 
692 // If we have found where the "_dyld_all_image_infos" lives in memory, read the
693 // current info from it, and then update all image load addresses (or lack
694 // thereof). Only do this if this is the first time we're reading the dyld
695 // infos. Return true if we actually read anything, and false otherwise.
698 
699  std::lock_guard<std::recursive_mutex> guard(m_mutex);
700  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
702  m_dyld_image_infos.size() != 0)
703  return false;
704 
706  // Nothing to load or unload?
708  return true;
709 
711  // DYLD is updating the images now. So we should say we have no images,
712  // and then we'll
713  // figure it out when we hit the added breakpoint.
714  return false;
715  } else {
719  DEBUG_PRINTF("%s", "unable to read all data for all_dylib_infos.");
720  m_dyld_image_infos.clear();
721  }
722  }
723 
724  // Now we have one more bit of business. If there is a library left in the
725  // images for our target that doesn't have a load address, then it must be
726  // something that we were expecting to load (for instance we read a load
727  // command for it) but it didn't in fact load - probably because
728  // DYLD_*_PATH pointed to an equivalent version. We don't want it to stay
729  // in the target's module list or it will confuse us, so unload it here.
730  Target &target = m_process->GetTarget();
731  ModuleList not_loaded_modules;
732  for (ModuleSP module_sp : target.GetImages().Modules()) {
733  if (!module_sp->IsLoadedInTarget(&target)) {
734  if (log) {
735  StreamString s;
736  module_sp->GetDescription(s.AsRawOstream());
737  LLDB_LOGF(log, "Unloading pre-run module: %s.", s.GetData());
738  }
739  not_loaded_modules.Append(module_sp);
740  }
741  }
742 
743  if (not_loaded_modules.GetSize() != 0) {
744  target.GetImages().Remove(not_loaded_modules);
745  }
746 
747  return true;
748  } else
749  return false;
750 }
751 
752 // Read a mach_header at ADDR into HEADER, and also fill in the load command
753 // data into LOAD_COMMAND_DATA if it is non-NULL.
754 //
755 // Returns true if we succeed, false if we fail for any reason.
757  llvm::MachO::mach_header *header,
758  DataExtractor *load_command_data) {
759  DataBufferHeap header_bytes(sizeof(llvm::MachO::mach_header), 0);
760  Status error;
761  size_t bytes_read = m_process->ReadMemory(addr, header_bytes.GetBytes(),
762  header_bytes.GetByteSize(), error);
763  if (bytes_read == sizeof(llvm::MachO::mach_header)) {
764  lldb::offset_t offset = 0;
765  ::memset(header, 0, sizeof(llvm::MachO::mach_header));
766 
767  // Get the magic byte unswapped so we can figure out what we are dealing
768  // with
769  DataExtractor data(header_bytes.GetBytes(), header_bytes.GetByteSize(),
771  header->magic = data.GetU32(&offset);
772  lldb::addr_t load_cmd_addr = addr;
773  data.SetByteOrder(
775  switch (header->magic) {
776  case llvm::MachO::MH_MAGIC:
777  case llvm::MachO::MH_CIGAM:
778  data.SetAddressByteSize(4);
779  load_cmd_addr += sizeof(llvm::MachO::mach_header);
780  break;
781 
782  case llvm::MachO::MH_MAGIC_64:
783  case llvm::MachO::MH_CIGAM_64:
784  data.SetAddressByteSize(8);
785  load_cmd_addr += sizeof(llvm::MachO::mach_header_64);
786  break;
787 
788  default:
789  return false;
790  }
791 
792  // Read the rest of dyld's mach header
793  if (data.GetU32(&offset, &header->cputype,
794  (sizeof(llvm::MachO::mach_header) / sizeof(uint32_t)) -
795  1)) {
796  if (load_command_data == nullptr)
797  return true; // We were able to read the mach_header and weren't asked
798  // to read the load command bytes
799 
800  DataBufferSP load_cmd_data_sp(new DataBufferHeap(header->sizeofcmds, 0));
801 
802  size_t load_cmd_bytes_read =
803  m_process->ReadMemory(load_cmd_addr, load_cmd_data_sp->GetBytes(),
804  load_cmd_data_sp->GetByteSize(), error);
805 
806  if (load_cmd_bytes_read == header->sizeofcmds) {
807  // Set the load command data and also set the correct endian swap
808  // settings and the correct address size
809  load_command_data->SetData(load_cmd_data_sp, 0, header->sizeofcmds);
810  load_command_data->SetByteOrder(data.GetByteOrder());
811  load_command_data->SetAddressByteSize(data.GetAddressByteSize());
812  return true; // We successfully read the mach_header and the load
813  // command data
814  }
815 
816  return false; // We weren't able to read the load command data
817  }
818  }
819  return false; // We failed the read the mach_header
820 }
821 
822 // Parse the load commands for an image
824  ImageInfo &dylib_info,
825  FileSpec *lc_id_dylinker) {
826  lldb::offset_t offset = 0;
827  uint32_t cmd_idx;
828  Segment segment;
829  dylib_info.Clear(true);
830 
831  for (cmd_idx = 0; cmd_idx < dylib_info.header.ncmds; cmd_idx++) {
832  // Clear out any load command specific data from DYLIB_INFO since we are
833  // about to read it.
834 
835  if (data.ValidOffsetForDataOfSize(offset,
836  sizeof(llvm::MachO::load_command))) {
837  llvm::MachO::load_command load_cmd;
838  lldb::offset_t load_cmd_offset = offset;
839  load_cmd.cmd = data.GetU32(&offset);
840  load_cmd.cmdsize = data.GetU32(&offset);
841  switch (load_cmd.cmd) {
842  case llvm::MachO::LC_SEGMENT: {
844  (const char *)data.GetData(&offset, 16), 16);
845  // We are putting 4 uint32_t values 4 uint64_t values so we have to use
846  // multiple 32 bit gets below.
847  segment.vmaddr = data.GetU32(&offset);
848  segment.vmsize = data.GetU32(&offset);
849  segment.fileoff = data.GetU32(&offset);
850  segment.filesize = data.GetU32(&offset);
851  // Extract maxprot, initprot, nsects and flags all at once
852  data.GetU32(&offset, &segment.maxprot, 4);
853  dylib_info.segments.push_back(segment);
854  } break;
855 
856  case llvm::MachO::LC_SEGMENT_64: {
858  (const char *)data.GetData(&offset, 16), 16);
859  // Extract vmaddr, vmsize, fileoff, and filesize all at once
860  data.GetU64(&offset, &segment.vmaddr, 4);
861  // Extract maxprot, initprot, nsects and flags all at once
862  data.GetU32(&offset, &segment.maxprot, 4);
863  dylib_info.segments.push_back(segment);
864  } break;
865 
866  case llvm::MachO::LC_ID_DYLINKER:
867  if (lc_id_dylinker) {
868  const lldb::offset_t name_offset =
869  load_cmd_offset + data.GetU32(&offset);
870  const char *path = data.PeekCStr(name_offset);
871  lc_id_dylinker->SetFile(path, FileSpec::Style::native);
872  FileSystem::Instance().Resolve(*lc_id_dylinker);
873  }
874  break;
875 
876  case llvm::MachO::LC_UUID:
877  dylib_info.uuid = UUID::fromOptionalData(data.GetData(&offset, 16), 16);
878  break;
879 
880  default:
881  break;
882  }
883  // Set offset to be the beginning of the next load command.
884  offset = load_cmd_offset + load_cmd.cmdsize;
885  }
886  }
887 
888  // All sections listed in the dyld image info structure will all either be
889  // fixed up already, or they will all be off by a single slide amount that is
890  // determined by finding the first segment that is at file offset zero which
891  // also has bytes (a file size that is greater than zero) in the object file.
892 
893  // Determine the slide amount (if any)
894  const size_t num_sections = dylib_info.segments.size();
895  for (size_t i = 0; i < num_sections; ++i) {
896  // Iterate through the object file sections to find the first section that
897  // starts of file offset zero and that has bytes in the file...
898  if ((dylib_info.segments[i].fileoff == 0 &&
899  dylib_info.segments[i].filesize > 0) ||
900  (dylib_info.segments[i].name == "__TEXT")) {
901  dylib_info.slide = dylib_info.address - dylib_info.segments[i].vmaddr;
902  // We have found the slide amount, so we can exit this for loop.
903  break;
904  }
905  }
906  return cmd_idx;
907 }
908 
909 // Read the mach_header and load commands for each image that the
910 // _dyld_all_image_infos structure points to and cache the results.
911 
913  ImageInfo::collection &image_infos, uint32_t infos_count,
914  bool update_executable) {
915  uint32_t exe_idx = UINT32_MAX;
916  // Read any UUID values that we can get
917  for (uint32_t i = 0; i < infos_count; i++) {
918  if (!image_infos[i].UUIDValid()) {
919  DataExtractor data; // Load command data
920  if (!ReadMachHeader(image_infos[i].address, &image_infos[i].header,
921  &data))
922  continue;
923 
924  ParseLoadCommands(data, image_infos[i], nullptr);
925 
926  if (image_infos[i].header.filetype == llvm::MachO::MH_EXECUTE)
927  exe_idx = i;
928  }
929  }
930 
931  Target &target = m_process->GetTarget();
932 
933  if (exe_idx < image_infos.size()) {
934  const bool can_create = true;
935  ModuleSP exe_module_sp(FindTargetModuleForImageInfo(image_infos[exe_idx],
936  can_create, nullptr));
937 
938  if (exe_module_sp) {
939  UpdateImageLoadAddress(exe_module_sp.get(), image_infos[exe_idx]);
940 
941  if (exe_module_sp.get() != target.GetExecutableModulePointer()) {
942  // Don't load dependent images since we are in dyld where we will know
943  // and find out about all images that are loaded. Also when setting the
944  // executable module, it will clear the targets module list, and if we
945  // have an in memory dyld module, it will get removed from the list so
946  // we will need to add it back after setting the executable module, so
947  // we first try and see if we already have a weak pointer to the dyld
948  // module, make it into a shared pointer, then add the executable, then
949  // re-add it back to make sure it is always in the list.
950  ModuleSP dyld_module_sp(GetDYLDModule());
951 
952  m_process->GetTarget().SetExecutableModule(exe_module_sp,
954 
955  if (dyld_module_sp) {
956  if (target.GetImages().AppendIfNeeded(dyld_module_sp)) {
957  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
958 
959  // Also add it to the section list.
960  UpdateImageLoadAddress(dyld_module_sp.get(), m_dyld);
961  }
962  }
963  }
964  }
965  }
966 }
967 
968 // Dump the _dyld_all_image_infos members and all current image infos that we
969 // have parsed to the file handle provided.
971  if (log == nullptr)
972  return;
973 
974  std::lock_guard<std::recursive_mutex> guard(m_mutex);
975  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
976  LLDB_LOGF(log,
977  "dyld_all_image_infos = { version=%d, count=%d, addr=0x%8.8" PRIx64
978  ", notify=0x%8.8" PRIx64 " }",
983  size_t i;
984  const size_t count = m_dyld_image_infos.size();
985  if (count > 0) {
986  log->PutCString("Loaded:");
987  for (i = 0; i < count; i++)
989  }
990 }
991 
993  DEBUG_PRINTF("DynamicLoaderMacOSXDYLD::%s() process state = %s\n",
994  __FUNCTION__, StateAsCString(m_process->GetState()));
997  Address so_addr;
998  // Set the notification breakpoint and install a breakpoint callback
999  // function that will get called each time the breakpoint gets hit. We
1000  // will use this to track when shared libraries get loaded/unloaded.
1001  bool resolved = m_process->GetTarget().ResolveLoadAddress(
1003  if (!resolved) {
1004  ModuleSP dyld_module_sp = GetDYLDModule();
1005  if (dyld_module_sp) {
1006  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
1007 
1008  UpdateImageLoadAddress(dyld_module_sp.get(), m_dyld);
1009  resolved = m_process->GetTarget().ResolveLoadAddress(
1011  }
1012  }
1013 
1014  if (resolved) {
1015  Breakpoint *dyld_break =
1016  m_process->GetTarget().CreateBreakpoint(so_addr, true, false).get();
1018  this, true);
1019  dyld_break->SetBreakpointKind("shared-library-event");
1020  m_break_id = dyld_break->GetID();
1021  }
1022  }
1023  }
1025 }
1026 
1028  Status error;
1029  // In order for us to tell if we can load a shared library we verify that the
1030  // dylib_info_addr isn't zero (which means no shared libraries have been set
1031  // yet, or dyld is currently mucking with the shared library list).
1033  // TODO: also check the _dyld_global_lock_held variable in
1034  // libSystem.B.dylib?
1035  // TODO: check the malloc lock?
1036  // TODO: check the objective C lock?
1038  return error; // Success
1039  }
1040 
1041  error.SetErrorString("unsafe to load or unload shared libraries");
1042  return error;
1043 }
1044 
1046  lldb::addr_t &base_address, UUID &uuid, LazyBool &using_shared_cache,
1047  LazyBool &private_shared_cache) {
1048  base_address = LLDB_INVALID_ADDRESS;
1049  uuid.Clear();
1050  using_shared_cache = eLazyBoolCalculate;
1051  private_shared_cache = eLazyBoolCalculate;
1052 
1053  if (m_process) {
1054  addr_t all_image_infos = m_process->GetImageInfoAddress();
1055 
1056  // The address returned by GetImageInfoAddress may be the address of dyld
1057  // (don't want) or it may be the address of the dyld_all_image_infos
1058  // structure (want). The first four bytes will be either the version field
1059  // (all_image_infos) or a Mach-O file magic constant. Version 13 and higher
1060  // of dyld_all_image_infos is required to get the sharedCacheUUID field.
1061 
1062  Status err;
1063  uint32_t version_or_magic =
1064  m_process->ReadUnsignedIntegerFromMemory(all_image_infos, 4, -1, err);
1065  if (version_or_magic != static_cast<uint32_t>(-1) &&
1066  version_or_magic != llvm::MachO::MH_MAGIC &&
1067  version_or_magic != llvm::MachO::MH_CIGAM &&
1068  version_or_magic != llvm::MachO::MH_MAGIC_64 &&
1069  version_or_magic != llvm::MachO::MH_CIGAM_64 &&
1070  version_or_magic >= 13) {
1071  addr_t sharedCacheUUID_address = LLDB_INVALID_ADDRESS;
1072  int wordsize = m_process->GetAddressByteSize();
1073  if (wordsize == 8) {
1074  sharedCacheUUID_address =
1075  all_image_infos + 160; // sharedCacheUUID <mach-o/dyld_images.h>
1076  }
1077  if (wordsize == 4) {
1078  sharedCacheUUID_address =
1079  all_image_infos + 84; // sharedCacheUUID <mach-o/dyld_images.h>
1080  }
1081  if (sharedCacheUUID_address != LLDB_INVALID_ADDRESS) {
1082  uuid_t shared_cache_uuid;
1083  if (m_process->ReadMemory(sharedCacheUUID_address, shared_cache_uuid,
1084  sizeof(uuid_t), err) == sizeof(uuid_t)) {
1085  uuid = UUID::fromOptionalData(shared_cache_uuid, 16);
1086  if (uuid.IsValid()) {
1087  using_shared_cache = eLazyBoolYes;
1088  }
1089  }
1090 
1091  if (version_or_magic >= 15) {
1092  // The sharedCacheBaseAddress field is the next one in the
1093  // dyld_all_image_infos struct.
1094  addr_t sharedCacheBaseAddr_address = sharedCacheUUID_address + 16;
1095  Status error;
1096  base_address = m_process->ReadUnsignedIntegerFromMemory(
1097  sharedCacheBaseAddr_address, wordsize, LLDB_INVALID_ADDRESS,
1098  error);
1099  if (error.Fail())
1100  base_address = LLDB_INVALID_ADDRESS;
1101  }
1102 
1103  return true;
1104  }
1105 
1106  //
1107  // add
1108  // NB: sharedCacheBaseAddress is the next field in dyld_all_image_infos
1109  // after
1110  // sharedCacheUUID -- that is, 16 bytes after it, if we wanted to fetch
1111  // it.
1112  }
1113  }
1114  return false;
1115 }
1116 
1120  return false;
1121 }
1122 
1124  PluginManager::RegisterPlugin(GetPluginNameStatic(),
1127 }
1128 
1131  PluginManager::UnregisterPlugin(CreateInstance);
1132 }
1133 
1135  static ConstString g_name("macosx-dyld");
1136  return g_name;
1137 }
1138 
1140  return "Dynamic loader plug-in that watches for shared library loads/unloads "
1141  "in MacOSX user processes.";
1142 }
1143 
1144 // PluginInterface protocol
1146  return GetPluginNameStatic();
1147 }
1148 
1150 
1152  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
1153 
1154  switch (m_dyld.header.magic) {
1155  case llvm::MachO::MH_MAGIC:
1156  case llvm::MachO::MH_CIGAM:
1157  return 4;
1158 
1159  case llvm::MachO::MH_MAGIC_64:
1160  case llvm::MachO::MH_CIGAM_64:
1161  return 8;
1162 
1163  default:
1164  break;
1165  }
1166  return 0;
1167 }
1168 
1170  switch (magic) {
1171  case llvm::MachO::MH_MAGIC:
1172  case llvm::MachO::MH_MAGIC_64:
1173  return endian::InlHostByteOrder();
1174 
1175  case llvm::MachO::MH_CIGAM:
1176  case llvm::MachO::MH_CIGAM_64:
1178  return lldb::eByteOrderLittle;
1179  else
1180  return lldb::eByteOrderBig;
1181 
1182  default:
1183  break;
1184  }
1185  return lldb::eByteOrderInvalid;
1186 }
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Definition: UUID.h:23
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Get the ArchSpec for this object file.
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lldb_private::Target::GetExecutableModulePointer
Module * GetExecutableModulePointer()
Definition: Target.cpp:1362
lldb_private::TypeSystemClang::GetBuiltinTypeForEncodingAndBitSize
CompilerType GetBuiltinTypeForEncodingAndBitSize(lldb::Encoding encoding, size_t bit_size) override
Definition: TypeSystemClang.cpp:805
Module.h
DynamicLoaderDarwin.h
DynamicLoaderMacOSXDYLD::UpdateImageInfosHeaderAndLoadCommands
void UpdateImageInfosHeaderAndLoadCommands(ImageInfo::collection &image_infos, uint32_t infos_count, bool update_executable)
Definition: DynamicLoaderMacOSXDYLD.cpp:912
lldb_private::Process::GetThreadList
ThreadList & GetThreadList()
Definition: Process.h:2096
DynamicLoaderMacOSXDYLD::DynamicLoaderMacOSXDYLD
DynamicLoaderMacOSXDYLD(lldb_private::Process *process)
Definition: DynamicLoaderMacOSXDYLD.cpp:97
lldb_private::StoppointCallbackContext::exe_ctx_ref
ExecutionContextRef exe_ctx_ref
Definition: StoppointCallbackContext.h:43
lldb_private::Process::GetTarget
Target & GetTarget()
Get the target object pointer for this module.
Definition: Process.h:1194
lldb_private::DynamicLoaderDarwin::GetMutex
std::recursive_mutex & GetMutex() const
Definition: DynamicLoaderDarwin.h:194
lldb_private::StateAsCString
const char * StateAsCString(lldb::StateType state)
Converts a StateType to a C string.
Definition: State.cpp:14
StoppointCallbackContext.h
lldb::eSymbolTypeData
@ eSymbolTypeData
Definition: lldb-enumerations.h:618
DynamicLoaderMacOSXDYLD::GetByteOrderFromMagic
static lldb::ByteOrder GetByteOrderFromMagic(uint32_t magic)
Definition: DynamicLoaderMacOSXDYLD.cpp:1169
lldb_private::Module
Definition: Module.h:75
lldb::offset_t
uint64_t offset_t
Definition: lldb-types.h:87
lldb_private::ValueList
Definition: Value.h:157
DynamicLoaderMacOSXDYLD::GetPluginNameStatic
static lldb_private::ConstString GetPluginNameStatic()
Definition: DynamicLoaderMacOSXDYLD.cpp:1134
StackFrame.h
DynamicLoaderMacOSXDYLD::PutToLog
void PutToLog(lldb_private::Log *log) const
Definition: DynamicLoaderMacOSXDYLD.cpp:970
lldb_private::Process::ReadCStringFromMemory
size_t ReadCStringFromMemory(lldb::addr_t vm_addr, char *cstr, size_t cstr_max_len, Status &error)
Read a NULL terminated C string from memory.
Definition: Process.cpp:2009
lldb_private::Target::CreateBreakpoint
lldb::BreakpointSP CreateBreakpoint(const FileSpecList *containingModules, const FileSpec &file, uint32_t line_no, uint32_t column, lldb::addr_t offset, LazyBool check_inlines, LazyBool skip_prologue, bool internal, bool request_hardware, LazyBool move_to_nearest_code)
Definition: Target.cpp:331
lldb_private::ArchSpec::GetTriple
llvm::Triple & GetTriple()
Architecture triple accessor.
Definition: ArchSpec.h:444
lldb::addr_t
uint64_t addr_t
Definition: lldb-types.h:83
lldb_private::DynamicLoaderDarwin::UnloadModuleSections
bool UnloadModuleSections(lldb_private::Module *module, ImageInfo &info)
Definition: DynamicLoaderDarwin.cpp:320
lldb_private::LazyBool
LazyBool
Definition: lldb-private-enumerations.h:115
lldb_private::DynamicLoaderDarwin::ImageInfo
Definition: DynamicLoaderDarwin.h:95
lldb_private::Target::GetDebugger
Debugger & GetDebugger()
Definition: Target.h:994
DynamicLoaderMacOSXDYLD::DYLDAllImageInfos::notification
lldb::addr_t notification
Definition: DynamicLoaderMacOSXDYLD.h:104
lldb_private::Target::ResolveLoadAddress
bool ResolveLoadAddress(lldb::addr_t load_addr, Address &so_addr, uint32_t stop_id=SectionLoadHistory::eStopIDNow)
Definition: Target.cpp:2827
Debugger.h
lldb_private::Target
Definition: Target.h:445
lldb_private::DynamicLoaderDarwin::ImageInfo::file_spec
lldb_private::FileSpec file_spec
Resolved path for this dylib.
Definition: DynamicLoaderDarwin.h:104
Section.h
lldb_private::DataExtractor::GetU64
uint64_t GetU64(lldb::offset_t *offset_ptr) const
Extract a uint64_t value from *offset_ptr.
Definition: DataExtractor.cpp:476
lldb_private::DataExtractor::SetData
lldb::offset_t SetData(const void *bytes, lldb::offset_t length, lldb::ByteOrder byte_order)
Set data with a buffer that is caller owned.
Definition: DataExtractor.cpp:225
DynamicLoaderMacOSXDYLD::DYLDAllImageInfos::dylib_info_addr
lldb::addr_t dylib_info_addr
Definition: DynamicLoaderMacOSXDYLD.h:103
ABI.h
lldb_private::Target::GetImages
const ModuleList & GetImages() const
Get accessor for the images for this process.
Definition: Target.h:919
lldb_private::Process::GetState
lldb::StateType GetState()
Get accessor for the current process state.
Definition: Process.cpp:1276
lldb_private::DynamicLoaderDarwin::SetDYLDModule
void SetDYLDModule(lldb::ModuleSP &dyld_module_sp)
Definition: DynamicLoaderDarwin.cpp:621
lldb_private::DataExtractor::PeekCStr
const char * PeekCStr(lldb::offset_t offset) const
Peek at a C string at offset.
Definition: DataExtractor.cpp:834
lldb_private::Value::SetCompilerType
void SetCompilerType(const CompilerType &compiler_type)
Definition: Value.cpp:254
DynamicLoaderMacOSXDYLD::NotifyBreakpointHit
static bool NotifyBreakpointHit(void *baton, lldb_private::StoppointCallbackContext *context, lldb::user_id_t break_id, lldb::user_id_t break_loc_id)
Definition: DynamicLoaderMacOSXDYLD.cpp:308
Target.h
lldb_private::DataExtractor::SetByteOrder
void SetByteOrder(lldb::ByteOrder byte_order)
Set the byte_order value.
Definition: DataExtractor.h:920
lldb_private::Value::GetScalar
const Scalar & GetScalar() const
Definition: Value.h:112
DynamicLoaderMacOSXDYLD::m_mutex
std::recursive_mutex m_mutex
Definition: DynamicLoaderMacOSXDYLD.h:165
lldb_private::FileSpec
Definition: FileSpec.h:56
DynamicLoaderMacOSXDYLD::InitializeFromAllImageInfos
bool InitializeFromAllImageInfos()
Definition: DynamicLoaderMacOSXDYLD.cpp:696
lldb_private::DynamicLoaderDarwin::UpdateDYLDImageInfoFromNewImageInfo
void UpdateDYLDImageInfoFromNewImageInfo(ImageInfo &image_info)
Definition: DynamicLoaderDarwin.cpp:606
error
static llvm::raw_ostream & error(Stream &strm)
Definition: CommandReturnObject.cpp:17
DynamicLoaderMacOSXDYLD::m_dyld_all_image_infos_addr
lldb::addr_t m_dyld_all_image_infos_addr
Definition: DynamicLoaderMacOSXDYLD.h:161
lldb_private::ModuleList::GetSize
size_t GetSize() const
Gets the size of the module list.
Definition: ModuleList.cpp:595
lldb_private::ValueList::PushValue
void PushValue(const Value &value)
Definition: Value.cpp:675
lldb_private::DynamicLoaderDarwin::AddModulesUsingImageInfos
bool AddModulesUsingImageInfos(ImageInfo::collection &image_infos)
Definition: DynamicLoaderDarwin.cpp:630
lldb_private::DynamicLoaderDarwin::ImageInfo::Clear
void Clear(bool load_cmd_data_only)
Definition: DynamicLoaderDarwin.h:125
DynamicLoaderMacOSXDYLD::DoInitialImageFetch
void DoInitialImageFetch() override
Definition: DynamicLoaderMacOSXDYLD.cpp:184
DynamicLoaderMacOSXDYLD::ReadAllImageInfosStructure
bool ReadAllImageInfosStructure()
Definition: DynamicLoaderMacOSXDYLD.cpp:408
lldb_private::DynamicLoaderDarwin::ImageInfo::address
lldb::addr_t address
Address of mach header for this dylib.
Definition: DynamicLoaderDarwin.h:97
lldb_private::ModuleList::Remove
bool Remove(const lldb::ModuleSP &module_sp, bool notify=true)
Remove a module from the module list.
lldb_private::DataExtractor::GetAddressByteSize
uint32_t GetAddressByteSize() const
Get the current address size.
Definition: DataExtractor.h:253
lldb_private::DynamicLoaderDarwin::m_dyld_image_infos_stop_id
uint32_t m_dyld_image_infos_stop_id
Definition: DynamicLoaderDarwin.h:233
lldb_private::DataExtractor
Definition: DataExtractor.h:48
lldb_private::ModuleList
Definition: ModuleList.h:71
DynamicLoaderMacOSXDYLD::ParseLoadCommands
uint32_t ParseLoadCommands(const lldb_private::DataExtractor &data, ImageInfo &dylib_info, lldb_private::FileSpec *lc_id_dylinker)
Definition: DynamicLoaderMacOSXDYLD.cpp:823
lldb_private::Scalar::ULongLong
unsigned long long ULongLong(unsigned long long fail_value=0) const
Definition: Scalar.cpp:334
Log.h
TypeSystemClang.h
lldb_private::ModuleList::AppendIfNeeded
bool AppendIfNeeded(const lldb::ModuleSP &module_sp, bool notify=true)
Append a module to the module list, if it is not already there.
lldb_private::eLoadDependentsNo
@ eLoadDependentsNo
Definition: Target.h:63
lldb_private::DynamicLoaderDarwin::Segment::vmaddr
lldb::addr_t vmaddr
Definition: DynamicLoaderDarwin.h:79
lldb_private::DynamicLoaderDarwin::ImageInfo::uuid
lldb_private::UUID uuid
UUID for this dylib if it has one, else all zeros.
Definition: DynamicLoaderDarwin.h:106
lldb_private::Process::GetLoadedDynamicLibrariesInfos
virtual lldb_private::StructuredData::ObjectSP GetLoadedDynamicLibrariesInfos(lldb::addr_t image_list_address, lldb::addr_t image_count)
Retrieve the list of shared libraries that are loaded for this process This method is used on pre-mac...
Definition: Process.h:1270
lldb_private::StructuredData::ObjectSP
std::shared_ptr< Object > ObjectSP
Definition: StructuredData.h:59
lldb_private::StreamString::GetData
const char * GetData() const
Definition: StreamString.h:43
DynamicLoaderMacOSXDYLD::DYLDAllImageInfos::Clear
void Clear()
Definition: DynamicLoaderMacOSXDYLD.h:111
lldb_private::DataExtractor::SetAddressByteSize
void SetAddressByteSize(uint32_t addr_size)
Set the address byte size.
Definition: DataExtractor.h:834
DynamicLoaderMacOSXDYLD::GetSharedCacheInformation
bool GetSharedCacheInformation(lldb::addr_t &base_address, lldb_private::UUID &uuid, lldb_private::LazyBool &using_shared_cache, lldb_private::LazyBool &private_shared_cache) override
Get information about the shared cache for a process, if possible.
Definition: DynamicLoaderMacOSXDYLD.cpp:1045
lldb_private::Debugger::GetAsyncErrorStream
lldb::StreamSP GetAsyncErrorStream()
Definition: Debugger.cpp:1065
lldb_private::DataExtractor::GetByteOrder
lldb::ByteOrder GetByteOrder() const
Get the current byte order value.
Definition: DataExtractor.h:583
lldb_private::Process::GetAddressByteSize
uint32_t GetAddressByteSize() const
Definition: Process.cpp:3317
lldb::eEncodingUint
@ eEncodingUint
unsigned integer
Definition: lldb-enumerations.h:148
lldb_private::ConstString
Definition: ConstString.h:40
lldb_private::ConstString::SetTrimmedCStringWithLength
void SetTrimmedCStringWithLength(const char *cstr, size_t fixed_cstr_len)
Set the C string value with the minimum length between fixed_cstr_len and the actual length of the C ...
Definition: ConstString.cpp:325
lldb_private::DynamicLoaderDarwin::ImageInfo::header
llvm::MachO::mach_header header
The mach header for this image.
Definition: DynamicLoaderDarwin.h:108
lldb_private::StreamString
Definition: StreamString.h:23
lldb_private::DataExtractor::GetU8
uint8_t GetU8(lldb::offset_t *offset_ptr) const
Extract a uint8_t value from *offset_ptr.
Definition: DataExtractor.cpp:318
DynamicLoaderMacOS.h
lldb_private::DynamicLoaderDarwin::Segment::vmsize
lldb::addr_t vmsize
Definition: DynamicLoaderDarwin.h:80
lldb_private::Scalar::UInt
unsigned int UInt(unsigned int fail_value=0) const
Definition: Scalar.cpp:320
lldb_private::DynamicLoaderDarwin::Segment::filesize
lldb::addr_t filesize
Definition: DynamicLoaderDarwin.h:82
DynamicLoaderMacOSXDYLD::~DynamicLoaderMacOSXDYLD
~DynamicLoaderMacOSXDYLD() override
Definition: DynamicLoaderMacOSXDYLD.cpp:105
lldb_private::DynamicLoader
Definition: DynamicLoader.h:52
lldb_private::DynamicLoader::m_process
Process * m_process
The process that this dynamic loader plug-in is tracking.
Definition: DynamicLoader.h:312
DynamicLoaderMacOSXDYLD::m_dyld_all_image_infos_stop_id
uint32_t m_dyld_all_image_infos_stop_id
Definition: DynamicLoaderMacOSXDYLD.h:163
lldb::eBasicTypeVoid
@ eBasicTypeVoid
Definition: lldb-enumerations.h:743
DynamicLoaderMacOSXDYLD.h
ThreadPlanRunToAddress.h
DynamicLoaderMacOSXDYLD::DYLDAllImageInfos::processDetachedFromSharedRegion
bool processDetachedFromSharedRegion
Definition: DynamicLoaderMacOSXDYLD.h:105
lldb_private::ThreadList::GetThreadAtIndex
lldb::ThreadSP GetThreadAtIndex(uint32_t idx, bool can_update=true)
Definition: ThreadList.cpp:90
lldb_private::DynamicLoaderDarwin::Segment::name
lldb_private::ConstString name
Definition: DynamicLoaderDarwin.h:78
Thread.h
lldb_private::DynamicLoaderDarwin::Segment
Definition: DynamicLoaderDarwin.h:74
lldb_private::DynamicLoaderDarwin
Definition: DynamicLoaderDarwin.h:27
lldb_private::ArchSpec::GetAddressByteSize
uint32_t GetAddressByteSize() const
Returns the size in bytes of an address of the current architecture.
Definition: ArchSpec.cpp:683
DynamicLoaderMacOS::Terminate
static void Terminate()
Definition: DynamicLoaderMacOS.cpp:503
ObjectFile.h
lldb_private::Target::SetExecutableModule
void SetExecutableModule(lldb::ModuleSP &module_sp, LoadDependentFiles load_dependent_files=eLoadDependentsDefault)
Set the main executable module.
Definition: Target.cpp:1397
LLDB_INVALID_BREAK_ID
#define LLDB_INVALID_BREAK_ID
Definition: lldb-defines.h:49
lldb_private::UUID::Clear
void Clear()
Definition: UUID.h:72
DynamicLoaderMacOSXDYLD::m_process_image_addr_is_all_images_infos
bool m_process_image_addr_is_all_images_infos
Definition: DynamicLoaderMacOSXDYLD.h:166
lldb_private::Symbol::GetName
ConstString GetName() const
Definition: Symbol.cpp:500
lldb_private::ExecutionContext::GetThreadRef
Thread & GetThreadRef() const
Returns a reference to the thread object.
Definition: ExecutionContext.cpp:236
DynamicLoaderMacOSXDYLD::m_dyld_all_image_infos
DYLDAllImageInfos m_dyld_all_image_infos
Definition: DynamicLoaderMacOSXDYLD.h:162
DynamicLoaderMacOSXDYLD::NeedToDoInitialImageFetch
bool NeedToDoInitialImageFetch() override
Definition: DynamicLoaderMacOSXDYLD.cpp:300
lldb_private::Target::GetArchitecture
const ArchSpec & GetArchitecture() const
Definition: Target.h:961
DynamicLoaderMacOSXDYLD::DYLDAllImageInfos::dylib_info_count
uint32_t dylib_info_count
Definition: DynamicLoaderMacOSXDYLD.h:102
lldb_private::Status
Definition: Status.h:44
lldb_private::DynamicLoaderDarwin::Segment::fileoff
lldb::addr_t fileoff
Definition: DynamicLoaderDarwin.h:81
lldb_private::CompilerType::GetPointerType
CompilerType GetPointerType() const
Return a new CompilerType that is a pointer to this type.
Definition: CompilerType.cpp:407
lldb::eByteOrderInvalid
@ eByteOrderInvalid
Definition: lldb-enumerations.h:139
lldb_private::DynamicLoaderDarwin::FindTargetModuleForImageInfo
lldb::ModuleSP FindTargetModuleForImageInfo(ImageInfo &image_info, bool can_create, bool *did_create_ptr)
Definition: DynamicLoaderDarwin.cpp:95
uint32_t
DynamicLoaderMacOSXDYLD::GetPluginVersion
uint32_t GetPluginVersion() override
Definition: DynamicLoaderMacOSXDYLD.cpp:1149
DynamicLoaderMacOSXDYLD::AddrByteSize
uint32_t AddrByteSize()
Definition: DynamicLoaderMacOSXDYLD.cpp:1151
lldb_private::Address
Definition: Address.h:59
DEBUG_PRINTF
#define DEBUG_PRINTF(fmt,...)
Definition: DynamicLoaderMacOSXDYLD.cpp:38
lldb_private::Target::ModulesDidLoad
void ModulesDidLoad(ModuleList &module_list)
Definition: Target.cpp:1613
lldb_private::ObjectFile::GetStrata
Strata GetStrata()
Definition: ObjectFile.h:621
DynamicLoaderMacOSXDYLD::CreateInstance
static lldb_private::DynamicLoader * CreateInstance(lldb_private::Process *process, bool force)
Definition: DynamicLoaderMacOSXDYLD.cpp:55
lldb_private::endian::InlHostByteOrder
lldb::ByteOrder InlHostByteOrder()
Definition: Endian.h:25
lldb_private::Breakpoint::SetCallback
void SetCallback(BreakpointHitCallback callback, void *baton, bool is_synchronous=false)
Set the callback action invoked when the breakpoint is hit.
Definition: Breakpoint.cpp:412
lldb_private::ThreadList::GetSize
uint32_t GetSize(bool can_update=true)
Definition: ThreadList.cpp:82
lldb_private::Stream::AsRawOstream
llvm::raw_ostream & AsRawOstream()
Returns a raw_ostream that forwards the data to this Stream object.
Definition: Stream.h:357
lldb_private::DynamicLoader::GetStopWhenImagesChange
bool GetStopWhenImagesChange() const
Get whether the process should stop when images change.
Definition: DynamicLoader.cpp:66
UINT32_MAX
#define UINT32_MAX
Definition: lldb-defines.h:31
ObjCLanguageRuntime.h
lldb_private::DataExtractor::GetU32
uint32_t GetU32(lldb::offset_t *offset_ptr) const
Extract a uint32_t value from *offset_ptr.
Definition: DataExtractor.cpp:427
DynamicLoaderMacOSXDYLD::DYLDAllImageInfos::libSystemInitialized
bool libSystemInitialized
Definition: DynamicLoaderMacOSXDYLD.h:106
DynamicLoaderMacOSXDYLD::GetPluginDescriptionStatic
static const char * GetPluginDescriptionStatic()
Definition: DynamicLoaderMacOSXDYLD.cpp:1139
PluginManager.h
lldb_private::DynamicLoaderDarwin::m_dyld_image_infos
ImageInfo::collection m_dyld_image_infos
Definition: DynamicLoaderDarwin.h:232
lldb_private::Target::RemoveBreakpointByID
bool RemoveBreakpointByID(lldb::break_id_t break_id)
Definition: Target.cpp:934
LLDB_INVALID_ADDRESS
#define LLDB_INVALID_ADDRESS
Definition: lldb-defines.h:86
DynamicLoaderMacOSXDYLD::ClearNotificationBreakpoint
void ClearNotificationBreakpoint() override
Definition: DynamicLoaderMacOSXDYLD.cpp:174
lldb_private::ModuleList::LogUUIDAndPaths
void LogUUIDAndPaths(Log *log, const char *prefix_cstr)
Definition: ModuleList.cpp:612
DynamicLoaderMacOSXDYLD::ReadDYLDInfoFromMemoryAndSetNotificationCallback
bool ReadDYLDInfoFromMemoryAndSetNotificationCallback(lldb::addr_t addr)
Definition: DynamicLoaderMacOSXDYLD.cpp:249
lldb_private::CompilerType
Generic representation of a type in a programming language.
Definition: CompilerType.h:33
Function.h
lldb::user_id_t
uint64_t user_id_t
Definition: lldb-types.h:84
lldb_private::DynamicLoaderDarwin::ImageInfo::slide
lldb::addr_t slide
The amount to slide all segments by if there is a global slide.
Definition: DynamicLoaderDarwin.h:100
lldb_private::Process::GetImageInfoAddress
virtual lldb::addr_t GetImageInfoAddress()
Get the image information address for the current process.
Definition: Process.cpp:1454
lldb_private
A class that represents a running process on the host machine.
Definition: SBCommandInterpreterRunOptions.h:16
lldb_private::eLazyBoolCalculate
@ eLazyBoolCalculate
Definition: lldb-private-enumerations.h:115
DynamicLoaderMacOSXDYLD::DYLDAllImageInfos::dyldImageLoadAddress
lldb::addr_t dyldImageLoadAddress
Definition: DynamicLoaderMacOSXDYLD.h:107
lldb_private::TypeSystemClang::GetBasicType
CompilerType GetBasicType(lldb::BasicType type)
Definition: TypeSystemClang.cpp:940
DynamicLoaderMacOSXDYLD::ReadMachHeader
bool ReadMachHeader(lldb::addr_t addr, llvm::MachO::mach_header *header, lldb_private::DataExtractor *load_command_data)
Definition: DynamicLoaderMacOSXDYLD.cpp:756
lldb::eByteOrderBig
@ eByteOrderBig
Definition: lldb-enumerations.h:140
lldb_private::TypeSystemClang
A TypeSystem implementation based on Clang.
Definition: TypeSystemClang.h:106
lldb_private::Process::GetABI
const lldb::ABISP & GetABI()
Definition: Process.cpp:1456
lldb_private::DataExtractor::GetData
const void * GetData(lldb::offset_t *offset_ptr, lldb::offset_t length) const
Extract length bytes from *offset_ptr.
Definition: DataExtractor.h:326
State.h
lldb_private::Process::ReadUnsignedIntegerFromMemory
uint64_t ReadUnsignedIntegerFromMemory(lldb::addr_t load_addr, size_t byte_size, uint64_t fail_value, Status &error)
Reads an unsigned integer of the specified byte size from process memory.
Definition: Process.cpp:2081
LLDB_PLUGIN_DEFINE
#define LLDB_PLUGIN_DEFINE(PluginName)
Definition: PluginManager.h:31
lldb_private::Log
Definition: Log.h:49
DynamicLoaderMacOSXDYLD::IsFullyInitialized
bool IsFullyInitialized() override
Return whether the dynamic loader is fully initialized and it's safe to call its APIs.
Definition: DynamicLoaderMacOSXDYLD.cpp:1117
lldb_private::FileSpec::SetFile
void SetFile(llvm::StringRef path, Style style)
Change the file specified with a new path.
Definition: FileSpec.cpp:174
DynamicLoaderMacOSXDYLD::DYLDAllImageInfos::version
uint32_t version
Definition: DynamicLoaderMacOSXDYLD.h:101
lldb_private::Module::GetArchitecture
const ArchSpec & GetArchitecture() const
Get const accessor for the module architecture.
Definition: Module.cpp:1066
lldb_private::GetLogIfAnyCategoriesSet
Log * GetLogIfAnyCategoriesSet(uint32_t mask)
Definition: Logging.cpp:62
lldb_private::Symbol::GetLoadAddress
lldb::addr_t GetLoadAddress(Target *target) const
Definition: Symbol.cpp:493
lldb_private::DynamicLoaderDarwin::m_libpthread_module_wp
lldb::ModuleWP m_libpthread_module_wp
Definition: DynamicLoaderDarwin.h:228
DynamicLoaderMacOSXDYLD::DidSetNotificationBreakpoint
bool DidSetNotificationBreakpoint() override
Definition: DynamicLoaderMacOSXDYLD.cpp:170
PATH_MAX
#define PATH_MAX
Definition: windows/PosixApi.h:25
lldb_private::Process::GetStopID
uint32_t GetStopID() const
Definition: Process.h:1353
DataBuffer.h
lldb::eByteOrderLittle
@ eByteOrderLittle
Definition: lldb-enumerations.h:142
lldb_private::DataBufferHeap
Definition: DataBufferHeap.h:30
uuid_t
unsigned char uuid_t[16]
Definition: UuidCompatibility.h:15
lldb_private::DataExtractor::ValidOffsetForDataOfSize
bool ValidOffsetForDataOfSize(lldb::offset_t offset, lldb::offset_t length) const
Test the availability of length bytes of data from offset.
Definition: DataExtractor.h:954
lldb
Definition: SBAddress.h:15
RegisterContext.h
DynamicLoaderMacOSXDYLD::Terminate
static void Terminate()
Definition: DynamicLoaderMacOSXDYLD.cpp:1129
DynamicLoaderMacOSXDYLD::GetPluginName
lldb_private::ConstString GetPluginName() override
Definition: DynamicLoaderMacOSXDYLD.cpp:1145
DynamicLoaderMacOSXDYLD::Initialize
static void Initialize()
Definition: DynamicLoaderMacOSXDYLD.cpp:1123
lldb_private::ObjectFile
Definition: ObjectFile.h:58
lldb_private::ModuleList::Append
void Append(const lldb::ModuleSP &module_sp, bool notify=true)
Append a module to the module list.
DynamicLoaderMacOSXDYLD::RemoveModulesUsingImageInfosAddress
bool RemoveModulesUsingImageInfosAddress(lldb::addr_t image_infos_addr, uint32_t image_infos_count)
Definition: DynamicLoaderMacOSXDYLD.cpp:570
DataBufferHeap.h
lldb_private::Breakpoint
General Outline: A breakpoint has four main parts, a filter, a resolver, the list of breakpoint locat...
Definition: Breakpoint.h:79
DynamicLoaderMacOSXDYLD::DoClear
void DoClear() override
Definition: DynamicLoaderMacOSXDYLD.cpp:158
lldb::ByteOrder
ByteOrder
Byte ordering definitions.
Definition: lldb-enumerations.h:138
DynamicLoaderMacOSXDYLD::SetNotificationBreakpoint
bool SetNotificationBreakpoint() override
Definition: DynamicLoaderMacOSXDYLD.cpp:992
lldb_private::DynamicLoaderDarwin::Segment::maxprot
uint32_t maxprot
Definition: DynamicLoaderDarwin.h:83
lldb_private::Log::PutCString
void PutCString(const char *cstr)
Definition: Log.cpp:118
DynamicLoaderMacOSXDYLD
Definition: DynamicLoaderMacOSXDYLD.h:35
DynamicLoaderMacOSXDYLD::CanLoadImage
lldb_private::Status CanLoadImage() override
Ask if it is ok to try and load or unload an shared library (image).
Definition: DynamicLoaderMacOSXDYLD.cpp:1027