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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/LLDBLog.h"
31 #include "lldb/Utility/Log.h"
32 #include "lldb/Utility/State.h"
33 
34 //#define ENABLE_DEBUG_PRINTF // COMMENT THIS LINE OUT PRIOR TO CHECKIN
35 #ifdef ENABLE_DEBUG_PRINTF
36 #include <cstdio>
37 #define DEBUG_PRINTF(fmt, ...) printf(fmt, ##__VA_ARGS__)
38 #else
39 #define DEBUG_PRINTF(fmt, ...)
40 #endif
41 
42 #ifndef __APPLE__
44 #else
45 #include <uuid/uuid.h>
46 #endif
47 
48 using namespace lldb;
49 using namespace lldb_private;
50 
52 
53 // Create an instance of this class. This function is filled into the plugin
54 // info class that gets handed out by the plugin factory and allows the lldb to
55 // instantiate an instance of this class.
56 DynamicLoader *DynamicLoaderMacOSXDYLD::CreateInstance(Process *process,
57  bool force) {
58  bool create = force;
59  if (!create) {
60  create = true;
61  Module *exe_module = process->GetTarget().GetExecutableModulePointer();
62  if (exe_module) {
63  ObjectFile *object_file = exe_module->GetObjectFile();
64  if (object_file) {
65  create = (object_file->GetStrata() == ObjectFile::eStrataUser);
66  }
67  }
68 
69  if (create) {
70  const llvm::Triple &triple_ref =
71  process->GetTarget().GetArchitecture().GetTriple();
72  switch (triple_ref.getOS()) {
73  case llvm::Triple::Darwin:
74  case llvm::Triple::MacOSX:
75  case llvm::Triple::IOS:
76  case llvm::Triple::TvOS:
77  case llvm::Triple::WatchOS:
78  // NEED_BRIDGEOS_TRIPLE case llvm::Triple::BridgeOS:
79  create = triple_ref.getVendor() == llvm::Triple::Apple;
80  break;
81  default:
82  create = false;
83  break;
84  }
85  }
86  }
87 
88  if (UseDYLDSPI(process)) {
89  create = false;
90  }
91 
92  if (create)
93  return new DynamicLoaderMacOSXDYLD(process);
94  return nullptr;
95 }
96 
97 // Constructor
99  : DynamicLoaderDarwin(process),
100  m_dyld_all_image_infos_addr(LLDB_INVALID_ADDRESS),
101  m_dyld_all_image_infos(), m_dyld_all_image_infos_stop_id(UINT32_MAX),
102  m_break_id(LLDB_INVALID_BREAK_ID), m_mutex(),
103  m_process_image_addr_is_all_images_infos(false) {}
104 
105 // Destructor
109 }
110 
112  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
113  bool did_exec = false;
114  if (m_process) {
115  // If we are stopped after an exec, we will have only one thread...
116  if (m_process->GetThreadList().GetSize() == 1) {
117  // We know if a process has exec'ed if our "m_dyld_all_image_infos_addr"
118  // value differs from the Process' image info address. When a process
119  // execs itself it might cause a change if ASLR is enabled.
120  const addr_t shlib_addr = m_process->GetImageInfoAddress();
122  shlib_addr != m_dyld_all_image_infos_addr) {
123  // The image info address from the process is the
124  // 'dyld_all_image_infos' address and it has changed.
125  did_exec = true;
127  shlib_addr == m_dyld.address) {
128  // The image info address from the process is the mach_header address
129  // for dyld and it has changed.
130  did_exec = true;
131  } else {
132  // ASLR might be disabled and dyld could have ended up in the same
133  // location. We should try and detect if we are stopped at
134  // '_dyld_start'
135  ThreadSP thread_sp(m_process->GetThreadList().GetThreadAtIndex(0));
136  if (thread_sp) {
137  lldb::StackFrameSP frame_sp(thread_sp->GetStackFrameAtIndex(0));
138  if (frame_sp) {
139  const Symbol *symbol =
140  frame_sp->GetSymbolContext(eSymbolContextSymbol).symbol;
141  if (symbol) {
142  if (symbol->GetName() == "_dyld_start")
143  did_exec = true;
144  }
145  }
146  }
147  }
148 
149  if (did_exec) {
150  m_libpthread_module_wp.reset();
152  }
153  }
154  }
155  return did_exec;
156 }
157 
158 // Clear out the state of this class.
160  std::lock_guard<std::recursive_mutex> guard(m_mutex);
161 
164 
168 }
169 
170 // Check if we have found DYLD yet
173 }
174 
178  }
179 }
180 
181 // Try and figure out where dyld is by first asking the Process if it knows
182 // (which currently calls down in the lldb::Process to get the DYLD info
183 // (available on SnowLeopard only). If that fails, then check in the default
184 // addresses.
187  // Check the image info addr as it might point to the mach header for dyld,
188  // or it might point to the dyld_all_image_infos struct
189  const addr_t shlib_addr = m_process->GetImageInfoAddress();
190  if (shlib_addr != LLDB_INVALID_ADDRESS) {
191  ByteOrder byte_order =
193  uint8_t buf[4];
194  DataExtractor data(buf, sizeof(buf), byte_order, 4);
195  Status error;
196  if (m_process->ReadMemory(shlib_addr, buf, 4, error) == 4) {
197  lldb::offset_t offset = 0;
198  uint32_t magic = data.GetU32(&offset);
199  switch (magic) {
200  case llvm::MachO::MH_MAGIC:
201  case llvm::MachO::MH_MAGIC_64:
202  case llvm::MachO::MH_CIGAM:
203  case llvm::MachO::MH_CIGAM_64:
206  return;
207 
208  default:
209  break;
210  }
211  }
212  // Maybe it points to the all image infos?
213  m_dyld_all_image_infos_addr = shlib_addr;
215  }
216  }
217 
223  else
225  m_dyld_all_image_infos_addr & 0xfffffffffff00000ull);
226  return;
227  }
228  }
229 
230  // Check some default values
232 
233  if (executable) {
234  const ArchSpec &exe_arch = executable->GetArchitecture();
235  if (exe_arch.GetAddressByteSize() == 8) {
237  } else if (exe_arch.GetMachine() == llvm::Triple::arm ||
238  exe_arch.GetMachine() == llvm::Triple::thumb ||
239  exe_arch.GetMachine() == llvm::Triple::aarch64 ||
240  exe_arch.GetMachine() == llvm::Triple::aarch64_32) {
242  } else {
244  }
245  }
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  static ConstString g_new_dyld_all_image_infos("dyld4::dyld_all_image_infos");
255  if (ReadMachHeader(addr, &m_dyld.header, &data)) {
256  if (m_dyld.header.filetype == llvm::MachO::MH_DYLINKER) {
257  m_dyld.address = addr;
258  ModuleSP dyld_module_sp;
259  if (ParseLoadCommands(data, m_dyld, &m_dyld.file_spec)) {
260  if (m_dyld.file_spec) {
262  }
263  }
264  dyld_module_sp = GetDYLDModule();
265 
266  Target &target = m_process->GetTarget();
267 
269  dyld_module_sp.get()) {
270  const Symbol *symbol = dyld_module_sp->FindFirstSymbolWithNameAndType(
271  g_dyld_all_image_infos, eSymbolTypeData);
272  if (!symbol) {
273  symbol = dyld_module_sp->FindFirstSymbolWithNameAndType(
274  g_new_dyld_all_image_infos, eSymbolTypeData);
275  }
276  if (symbol)
277  m_dyld_all_image_infos_addr = symbol->GetLoadAddress(&target);
278  }
279 
280  // Update all image infos
282 
283  // If we didn't have an executable before, but now we do, then the dyld
284  // module shared pointer might be unique and we may need to add it again
285  // (since Target::SetExecutableModule() will clear the images). So append
286  // the dyld module back to the list if it is
287  /// unique!
288  if (dyld_module_sp) {
289  target.GetImages().AppendIfNeeded(dyld_module_sp);
290 
291  // At this point we should have read in dyld's module, and so we should
292  // set breakpoints in it:
293  ModuleList modules;
294  modules.Append(dyld_module_sp);
295  target.ModulesDidLoad(modules);
296  SetDYLDModule(dyld_module_sp);
297  }
298 
299  return true;
300  }
301  }
302  return false;
303 }
304 
307 }
308 
309 // Static callback function that gets called when our DYLD notification
310 // breakpoint gets hit. We update all of our image infos and then let our super
311 // class DynamicLoader class decide if we should stop or not (based on global
312 // preference).
314  void *baton, StoppointCallbackContext *context, lldb::user_id_t break_id,
315  lldb::user_id_t break_loc_id) {
316  // Let the event know that the images have changed
317  // DYLD passes three arguments to the notification breakpoint.
318  // Arg1: enum dyld_image_mode mode - 0 = adding, 1 = removing Arg2: uint32_t
319  // infoCount - Number of shared libraries added Arg3: dyld_image_info
320  // info[] - Array of structs of the form:
321  // const struct mach_header
322  // *imageLoadAddress
323  // const char *imageFilePath
324  // uintptr_t imageFileModDate (a time_t)
325 
326  DynamicLoaderMacOSXDYLD *dyld_instance = (DynamicLoaderMacOSXDYLD *)baton;
327 
328  // First step is to see if we've already initialized the all image infos. If
329  // we haven't then this function will do so and return true. In the course
330  // of initializing the all_image_infos it will read the complete current
331  // state, so we don't need to figure out what has changed from the data
332  // passed in to us.
333 
334  ExecutionContext exe_ctx(context->exe_ctx_ref);
335  Process *process = exe_ctx.GetProcessPtr();
336 
337  // This is a sanity check just in case this dyld_instance is an old dyld
338  // plugin's breakpoint still lying around.
339  if (process != dyld_instance->m_process)
340  return false;
341 
342  if (dyld_instance->InitializeFromAllImageInfos())
343  return dyld_instance->GetStopWhenImagesChange();
344 
345  const lldb::ABISP &abi = process->GetABI();
346  if (abi) {
347  // Build up the value array to store the three arguments given above, then
348  // get the values from the ABI:
349 
350  TypeSystemClang *clang_ast_context =
351  ScratchTypeSystemClang::GetForTarget(process->GetTarget());
352  if (!clang_ast_context)
353  return false;
354 
355  ValueList argument_values;
356  Value input_value;
357 
358  CompilerType clang_void_ptr_type =
359  clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType();
360  CompilerType clang_uint32_type =
361  clang_ast_context->GetBuiltinTypeForEncodingAndBitSize(
362  lldb::eEncodingUint, 32);
363  input_value.SetValueType(Value::ValueType::Scalar);
364  input_value.SetCompilerType(clang_uint32_type);
365  // input_value.SetContext (Value::eContextTypeClangType,
366  // clang_uint32_type);
367  argument_values.PushValue(input_value);
368  argument_values.PushValue(input_value);
369  input_value.SetCompilerType(clang_void_ptr_type);
370  // input_value.SetContext (Value::eContextTypeClangType,
371  // clang_void_ptr_type);
372  argument_values.PushValue(input_value);
373 
374  if (abi->GetArgumentValues(exe_ctx.GetThreadRef(), argument_values)) {
375  uint32_t dyld_mode =
376  argument_values.GetValueAtIndex(0)->GetScalar().UInt(-1);
377  if (dyld_mode != static_cast<uint32_t>(-1)) {
378  // Okay the mode was right, now get the number of elements, and the
379  // array of new elements...
380  uint32_t image_infos_count =
381  argument_values.GetValueAtIndex(1)->GetScalar().UInt(-1);
382  if (image_infos_count != static_cast<uint32_t>(-1)) {
383  // Got the number added, now go through the array of added elements,
384  // putting out the mach header address, and adding the image. Note,
385  // I'm not putting in logging here, since the AddModules &
386  // RemoveModules functions do all the logging internally.
387 
388  lldb::addr_t image_infos_addr =
389  argument_values.GetValueAtIndex(2)->GetScalar().ULongLong();
390  if (dyld_mode == 0) {
391  // This is add:
392  dyld_instance->AddModulesUsingImageInfosAddress(image_infos_addr,
393  image_infos_count);
394  } else {
395  // This is remove:
397  image_infos_addr, image_infos_count);
398  }
399  }
400  }
401  }
402  } else {
403  Target &target = process->GetTarget();
404  Debugger::ReportWarning(
405  "no ABI plugin located for triple " +
406  target.GetArchitecture().GetTriple().getTriple() +
407  ": shared libraries will not be registered",
408  target.GetDebugger().GetID());
409  }
410 
411  // Return true to stop the target, false to just let the target run
412  return dyld_instance->GetStopWhenImagesChange();
413 }
414 
416  std::lock_guard<std::recursive_mutex> guard(m_mutex);
417 
418  // the all image infos is already valid for this process stop ID
420  return true;
421 
424  ByteOrder byte_order =
426  uint32_t addr_size =
428 
429  uint8_t buf[256];
430  DataExtractor data(buf, sizeof(buf), byte_order, addr_size);
431  lldb::offset_t offset = 0;
432 
433  const size_t count_v2 = sizeof(uint32_t) + // version
434  sizeof(uint32_t) + // infoArrayCount
435  addr_size + // infoArray
436  addr_size + // notification
437  addr_size + // processDetachedFromSharedRegion +
438  // libSystemInitialized + pad
439  addr_size; // dyldImageLoadAddress
440  const size_t count_v11 = count_v2 + addr_size + // jitInfo
441  addr_size + // dyldVersion
442  addr_size + // errorMessage
443  addr_size + // terminationFlags
444  addr_size + // coreSymbolicationShmPage
445  addr_size + // systemOrderFlag
446  addr_size + // uuidArrayCount
447  addr_size + // uuidArray
448  addr_size + // dyldAllImageInfosAddress
449  addr_size + // initialImageCount
450  addr_size + // errorKind
451  addr_size + // errorClientOfDylibPath
452  addr_size + // errorTargetDylibPath
453  addr_size; // errorSymbol
454  const size_t count_v13 = count_v11 + addr_size + // sharedCacheSlide
455  sizeof(uuid_t); // sharedCacheUUID
456  UNUSED_IF_ASSERT_DISABLED(count_v13);
457  assert(sizeof(buf) >= count_v13);
458 
459  Status error;
461  4) {
462  m_dyld_all_image_infos.version = data.GetU32(&offset);
463  // If anything in the high byte is set, we probably got the byte order
464  // incorrect (the process might not have it set correctly yet due to
465  // attaching to a program without a specified file).
466  if (m_dyld_all_image_infos.version & 0xff000000) {
467  // We have guessed the wrong byte order. Swap it and try reading the
468  // version again.
469  if (byte_order == eByteOrderLittle)
470  byte_order = eByteOrderBig;
471  else
472  byte_order = eByteOrderLittle;
473 
474  data.SetByteOrder(byte_order);
475  offset = 0;
476  m_dyld_all_image_infos.version = data.GetU32(&offset);
477  }
478  } else {
479  return false;
480  }
481 
482  const size_t count =
483  (m_dyld_all_image_infos.version >= 11) ? count_v11 : count_v2;
484 
485  const size_t bytes_read =
487  if (bytes_read == count) {
488  offset = 0;
489  m_dyld_all_image_infos.version = data.GetU32(&offset);
494  data.GetU8(&offset);
496  // Adjust for padding.
497  offset += addr_size - 2;
499  if (m_dyld_all_image_infos.version >= 11) {
500  offset += addr_size * 8;
501  uint64_t dyld_all_image_infos_addr = data.GetAddress(&offset);
502 
503  // When we started, we were given the actual address of the
504  // all_image_infos struct (probably via TASK_DYLD_INFO) in memory -
505  // this address is stored in m_dyld_all_image_infos_addr and is the
506  // most accurate address we have.
507 
508  // We read the dyld_all_image_infos struct from memory; it contains its
509  // own address. If the address in the struct does not match the actual
510  // address, the dyld we're looking at has been loaded at a different
511  // location (slid) from where it intended to load. The addresses in
512  // the dyld_all_image_infos struct are the original, non-slid
513  // addresses, and need to be adjusted. Most importantly the address of
514  // dyld and the notification address need to be adjusted.
515 
516  if (dyld_all_image_infos_addr != m_dyld_all_image_infos_addr) {
517  uint64_t image_infos_offset =
518  dyld_all_image_infos_addr -
520  uint64_t notification_offset =
524  m_dyld_all_image_infos_addr - image_infos_offset;
526  m_dyld_all_image_infos.dyldImageLoadAddress + notification_offset;
527  }
528  }
530  return true;
531  }
532  }
533  return false;
534 }
535 
537  lldb::addr_t image_infos_addr, uint32_t image_infos_count) {
538  ImageInfo::collection image_infos;
539  Log *log = GetLog(LLDBLog::DynamicLoader);
540  LLDB_LOGF(log, "Adding %d modules.\n", image_infos_count);
541 
542  std::lock_guard<std::recursive_mutex> guard(m_mutex);
543  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
545  return true;
546 
547  StructuredData::ObjectSP image_infos_json_sp =
548  m_process->GetLoadedDynamicLibrariesInfos(image_infos_addr,
549  image_infos_count);
550  if (image_infos_json_sp.get() && image_infos_json_sp->GetAsDictionary() &&
551  image_infos_json_sp->GetAsDictionary()->HasKey("images") &&
552  image_infos_json_sp->GetAsDictionary()
553  ->GetValueForKey("images")
554  ->GetAsArray() &&
555  image_infos_json_sp->GetAsDictionary()
556  ->GetValueForKey("images")
557  ->GetAsArray()
558  ->GetSize() == image_infos_count) {
559  bool return_value = false;
560  if (JSONImageInformationIntoImageInfo(image_infos_json_sp, image_infos)) {
562  return_value = AddModulesUsingImageInfos(image_infos);
563  }
565  return return_value;
566  }
567 
568  if (!ReadImageInfos(image_infos_addr, image_infos_count, image_infos))
569  return false;
570 
571  UpdateImageInfosHeaderAndLoadCommands(image_infos, image_infos_count, false);
572  bool return_value = AddModulesUsingImageInfos(image_infos);
574  return return_value;
575 }
576 
578  lldb::addr_t image_infos_addr, uint32_t image_infos_count) {
579  ImageInfo::collection image_infos;
580  Log *log = GetLog(LLDBLog::DynamicLoader);
581 
582  std::lock_guard<std::recursive_mutex> guard(m_mutex);
583  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
585  return true;
586 
587  // First read in the image_infos for the removed modules, and their headers &
588  // load commands.
589  if (!ReadImageInfos(image_infos_addr, image_infos_count, image_infos)) {
590  if (log)
591  log->PutCString("Failed reading image infos array.");
592  return false;
593  }
594 
595  LLDB_LOGF(log, "Removing %d modules.", image_infos_count);
596 
597  ModuleList unloaded_module_list;
598  for (uint32_t idx = 0; idx < image_infos.size(); ++idx) {
599  if (log) {
600  LLDB_LOGF(log, "Removing module at address=0x%16.16" PRIx64 ".",
601  image_infos[idx].address);
602  image_infos[idx].PutToLog(log);
603  }
604 
605  // Remove this image_infos from the m_all_image_infos. We do the
606  // comparison by address rather than by file spec because we can have many
607  // modules with the same "file spec" in the case that they are modules
608  // loaded from memory.
609  //
610  // Also copy over the uuid from the old entry to the removed entry so we
611  // can use it to lookup the module in the module list.
612 
613  ImageInfo::collection::iterator pos, end = m_dyld_image_infos.end();
614  for (pos = m_dyld_image_infos.begin(); pos != end; pos++) {
615  if (image_infos[idx].address == (*pos).address) {
616  image_infos[idx].uuid = (*pos).uuid;
617 
618  // Add the module from this image_info to the "unloaded_module_list".
619  // We'll remove them all at one go later on.
620 
621  ModuleSP unload_image_module_sp(
622  FindTargetModuleForImageInfo(image_infos[idx], false, nullptr));
623  if (unload_image_module_sp.get()) {
624  // When we unload, be sure to use the image info from the old list,
625  // since that has sections correctly filled in.
626  UnloadModuleSections(unload_image_module_sp.get(), *pos);
627  unloaded_module_list.AppendIfNeeded(unload_image_module_sp);
628  } else {
629  if (log) {
630  LLDB_LOGF(log, "Could not find module for unloading info entry:");
631  image_infos[idx].PutToLog(log);
632  }
633  }
634 
635  // Then remove it from the m_dyld_image_infos:
636 
637  m_dyld_image_infos.erase(pos);
638  break;
639  }
640  }
641 
642  if (pos == end) {
643  if (log) {
644  LLDB_LOGF(log, "Could not find image_info entry for unloading image:");
645  image_infos[idx].PutToLog(log);
646  }
647  }
648  }
649  if (unloaded_module_list.GetSize() > 0) {
650  if (log) {
651  log->PutCString("Unloaded:");
652  unloaded_module_list.LogUUIDAndPaths(
653  log, "DynamicLoaderMacOSXDYLD::ModulesDidUnload");
654  }
655  m_process->GetTarget().GetImages().Remove(unloaded_module_list);
656  }
658  return true;
659 }
660 
662  lldb::addr_t image_infos_addr, uint32_t image_infos_count,
663  ImageInfo::collection &image_infos) {
664  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
665  const ByteOrder endian = GetByteOrderFromMagic(m_dyld.header.magic);
666  const uint32_t addr_size = m_dyld.GetAddressByteSize();
667 
668  image_infos.resize(image_infos_count);
669  const size_t count = image_infos.size() * 3 * addr_size;
670  DataBufferHeap info_data(count, 0);
671  Status error;
672  const size_t bytes_read = m_process->ReadMemory(
673  image_infos_addr, info_data.GetBytes(), info_data.GetByteSize(), error);
674  if (bytes_read == count) {
675  lldb::offset_t info_data_offset = 0;
676  DataExtractor info_data_ref(info_data.GetBytes(), info_data.GetByteSize(),
677  endian, addr_size);
678  for (size_t i = 0;
679  i < image_infos.size() && info_data_ref.ValidOffset(info_data_offset);
680  i++) {
681  image_infos[i].address = info_data_ref.GetAddress(&info_data_offset);
682  lldb::addr_t path_addr = info_data_ref.GetAddress(&info_data_offset);
683  image_infos[i].mod_date = info_data_ref.GetAddress(&info_data_offset);
684 
685  char raw_path[PATH_MAX];
686  m_process->ReadCStringFromMemory(path_addr, raw_path, sizeof(raw_path),
687  error);
688  // don't resolve the path
689  if (error.Success()) {
690  image_infos[i].file_spec.SetFile(raw_path, FileSpec::Style::native);
691  }
692  }
693  return true;
694  } else {
695  return false;
696  }
697 }
698 
699 // If we have found where the "_dyld_all_image_infos" lives in memory, read the
700 // current info from it, and then update all image load addresses (or lack
701 // thereof). Only do this if this is the first time we're reading the dyld
702 // infos. Return true if we actually read anything, and false otherwise.
704  Log *log = GetLog(LLDBLog::DynamicLoader);
705 
706  std::lock_guard<std::recursive_mutex> guard(m_mutex);
707  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
709  m_dyld_image_infos.size() != 0)
710  return false;
711 
713  // Nothing to load or unload?
715  return true;
716 
718  // DYLD is updating the images now. So we should say we have no images,
719  // and then we'll
720  // figure it out when we hit the added breakpoint.
721  return false;
722  } else {
726  DEBUG_PRINTF("%s", "unable to read all data for all_dylib_infos.");
727  m_dyld_image_infos.clear();
728  }
729  }
730 
731  // Now we have one more bit of business. If there is a library left in the
732  // images for our target that doesn't have a load address, then it must be
733  // something that we were expecting to load (for instance we read a load
734  // command for it) but it didn't in fact load - probably because
735  // DYLD_*_PATH pointed to an equivalent version. We don't want it to stay
736  // in the target's module list or it will confuse us, so unload it here.
737  Target &target = m_process->GetTarget();
738  ModuleList not_loaded_modules;
739  for (ModuleSP module_sp : target.GetImages().Modules()) {
740  if (!module_sp->IsLoadedInTarget(&target)) {
741  if (log) {
742  StreamString s;
743  module_sp->GetDescription(s.AsRawOstream());
744  LLDB_LOGF(log, "Unloading pre-run module: %s.", s.GetData());
745  }
746  not_loaded_modules.Append(module_sp);
747  }
748  }
749 
750  if (not_loaded_modules.GetSize() != 0) {
751  target.GetImages().Remove(not_loaded_modules);
752  }
753 
754  return true;
755  } else
756  return false;
757 }
758 
759 // Read a mach_header at ADDR into HEADER, and also fill in the load command
760 // data into LOAD_COMMAND_DATA if it is non-NULL.
761 //
762 // Returns true if we succeed, false if we fail for any reason.
764  llvm::MachO::mach_header *header,
765  DataExtractor *load_command_data) {
766  DataBufferHeap header_bytes(sizeof(llvm::MachO::mach_header), 0);
767  Status error;
768  size_t bytes_read = m_process->ReadMemory(addr, header_bytes.GetBytes(),
769  header_bytes.GetByteSize(), error);
770  if (bytes_read == sizeof(llvm::MachO::mach_header)) {
771  lldb::offset_t offset = 0;
772  ::memset(header, 0, sizeof(llvm::MachO::mach_header));
773 
774  // Get the magic byte unswapped so we can figure out what we are dealing
775  // with
776  DataExtractor data(header_bytes.GetBytes(), header_bytes.GetByteSize(),
778  header->magic = data.GetU32(&offset);
779  lldb::addr_t load_cmd_addr = addr;
780  data.SetByteOrder(
782  switch (header->magic) {
783  case llvm::MachO::MH_MAGIC:
784  case llvm::MachO::MH_CIGAM:
785  data.SetAddressByteSize(4);
786  load_cmd_addr += sizeof(llvm::MachO::mach_header);
787  break;
788 
789  case llvm::MachO::MH_MAGIC_64:
790  case llvm::MachO::MH_CIGAM_64:
791  data.SetAddressByteSize(8);
792  load_cmd_addr += sizeof(llvm::MachO::mach_header_64);
793  break;
794 
795  default:
796  return false;
797  }
798 
799  // Read the rest of dyld's mach header
800  if (data.GetU32(&offset, &header->cputype,
801  (sizeof(llvm::MachO::mach_header) / sizeof(uint32_t)) -
802  1)) {
803  if (load_command_data == nullptr)
804  return true; // We were able to read the mach_header and weren't asked
805  // to read the load command bytes
806 
807  WritableDataBufferSP load_cmd_data_sp(
808  new DataBufferHeap(header->sizeofcmds, 0));
809 
810  size_t load_cmd_bytes_read =
811  m_process->ReadMemory(load_cmd_addr, load_cmd_data_sp->GetBytes(),
812  load_cmd_data_sp->GetByteSize(), error);
813 
814  if (load_cmd_bytes_read == header->sizeofcmds) {
815  // Set the load command data and also set the correct endian swap
816  // settings and the correct address size
817  load_command_data->SetData(load_cmd_data_sp, 0, header->sizeofcmds);
818  load_command_data->SetByteOrder(data.GetByteOrder());
819  load_command_data->SetAddressByteSize(data.GetAddressByteSize());
820  return true; // We successfully read the mach_header and the load
821  // command data
822  }
823 
824  return false; // We weren't able to read the load command data
825  }
826  }
827  return false; // We failed the read the mach_header
828 }
829 
830 // Parse the load commands for an image
832  ImageInfo &dylib_info,
833  FileSpec *lc_id_dylinker) {
834  lldb::offset_t offset = 0;
835  uint32_t cmd_idx;
836  Segment segment;
837  dylib_info.Clear(true);
838 
839  for (cmd_idx = 0; cmd_idx < dylib_info.header.ncmds; cmd_idx++) {
840  // Clear out any load command specific data from DYLIB_INFO since we are
841  // about to read it.
842 
843  if (data.ValidOffsetForDataOfSize(offset,
844  sizeof(llvm::MachO::load_command))) {
845  llvm::MachO::load_command load_cmd;
846  lldb::offset_t load_cmd_offset = offset;
847  load_cmd.cmd = data.GetU32(&offset);
848  load_cmd.cmdsize = data.GetU32(&offset);
849  switch (load_cmd.cmd) {
850  case llvm::MachO::LC_SEGMENT: {
852  (const char *)data.GetData(&offset, 16), 16);
853  // We are putting 4 uint32_t values 4 uint64_t values so we have to use
854  // multiple 32 bit gets below.
855  segment.vmaddr = data.GetU32(&offset);
856  segment.vmsize = data.GetU32(&offset);
857  segment.fileoff = data.GetU32(&offset);
858  segment.filesize = data.GetU32(&offset);
859  // Extract maxprot, initprot, nsects and flags all at once
860  data.GetU32(&offset, &segment.maxprot, 4);
861  dylib_info.segments.push_back(segment);
862  } break;
863 
864  case llvm::MachO::LC_SEGMENT_64: {
866  (const char *)data.GetData(&offset, 16), 16);
867  // Extract vmaddr, vmsize, fileoff, and filesize all at once
868  data.GetU64(&offset, &segment.vmaddr, 4);
869  // Extract maxprot, initprot, nsects and flags all at once
870  data.GetU32(&offset, &segment.maxprot, 4);
871  dylib_info.segments.push_back(segment);
872  } break;
873 
874  case llvm::MachO::LC_ID_DYLINKER:
875  if (lc_id_dylinker) {
876  const lldb::offset_t name_offset =
877  load_cmd_offset + data.GetU32(&offset);
878  const char *path = data.PeekCStr(name_offset);
879  lc_id_dylinker->SetFile(path, FileSpec::Style::native);
880  FileSystem::Instance().Resolve(*lc_id_dylinker);
881  }
882  break;
883 
884  case llvm::MachO::LC_UUID:
885  dylib_info.uuid = UUID::fromOptionalData(data.GetData(&offset, 16), 16);
886  break;
887 
888  default:
889  break;
890  }
891  // Set offset to be the beginning of the next load command.
892  offset = load_cmd_offset + load_cmd.cmdsize;
893  }
894  }
895 
896  // All sections listed in the dyld image info structure will all either be
897  // fixed up already, or they will all be off by a single slide amount that is
898  // determined by finding the first segment that is at file offset zero which
899  // also has bytes (a file size that is greater than zero) in the object file.
900 
901  // Determine the slide amount (if any)
902  const size_t num_sections = dylib_info.segments.size();
903  for (size_t i = 0; i < num_sections; ++i) {
904  // Iterate through the object file sections to find the first section that
905  // starts of file offset zero and that has bytes in the file...
906  if ((dylib_info.segments[i].fileoff == 0 &&
907  dylib_info.segments[i].filesize > 0) ||
908  (dylib_info.segments[i].name == "__TEXT")) {
909  dylib_info.slide = dylib_info.address - dylib_info.segments[i].vmaddr;
910  // We have found the slide amount, so we can exit this for loop.
911  break;
912  }
913  }
914  return cmd_idx;
915 }
916 
917 // Read the mach_header and load commands for each image that the
918 // _dyld_all_image_infos structure points to and cache the results.
919 
921  ImageInfo::collection &image_infos, uint32_t infos_count,
922  bool update_executable) {
923  uint32_t exe_idx = UINT32_MAX;
924  // Read any UUID values that we can get
925  for (uint32_t i = 0; i < infos_count; i++) {
926  if (!image_infos[i].UUIDValid()) {
927  DataExtractor data; // Load command data
928  if (!ReadMachHeader(image_infos[i].address, &image_infos[i].header,
929  &data))
930  continue;
931 
932  ParseLoadCommands(data, image_infos[i], nullptr);
933 
934  if (image_infos[i].header.filetype == llvm::MachO::MH_EXECUTE)
935  exe_idx = i;
936  }
937  }
938 
939  Target &target = m_process->GetTarget();
940 
941  if (exe_idx < image_infos.size()) {
942  const bool can_create = true;
943  ModuleSP exe_module_sp(FindTargetModuleForImageInfo(image_infos[exe_idx],
944  can_create, nullptr));
945 
946  if (exe_module_sp) {
947  UpdateImageLoadAddress(exe_module_sp.get(), image_infos[exe_idx]);
948 
949  if (exe_module_sp.get() != target.GetExecutableModulePointer()) {
950  // Don't load dependent images since we are in dyld where we will know
951  // and find out about all images that are loaded. Also when setting the
952  // executable module, it will clear the targets module list, and if we
953  // have an in memory dyld module, it will get removed from the list so
954  // we will need to add it back after setting the executable module, so
955  // we first try and see if we already have a weak pointer to the dyld
956  // module, make it into a shared pointer, then add the executable, then
957  // re-add it back to make sure it is always in the list.
958  ModuleSP dyld_module_sp(GetDYLDModule());
959 
960  m_process->GetTarget().SetExecutableModule(exe_module_sp,
962 
963  if (dyld_module_sp) {
964  if (target.GetImages().AppendIfNeeded(dyld_module_sp)) {
965  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
966 
967  // Also add it to the section list.
968  UpdateImageLoadAddress(dyld_module_sp.get(), m_dyld);
969  }
970  }
971  }
972  }
973  }
974 }
975 
976 // Dump the _dyld_all_image_infos members and all current image infos that we
977 // have parsed to the file handle provided.
979  if (log == nullptr)
980  return;
981 
982  std::lock_guard<std::recursive_mutex> guard(m_mutex);
983  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
984  LLDB_LOGF(log,
985  "dyld_all_image_infos = { version=%d, count=%d, addr=0x%8.8" PRIx64
986  ", notify=0x%8.8" PRIx64 " }",
991  size_t i;
992  const size_t count = m_dyld_image_infos.size();
993  if (count > 0) {
994  log->PutCString("Loaded:");
995  for (i = 0; i < count; i++)
997  }
998 }
999 
1001  DEBUG_PRINTF("DynamicLoaderMacOSXDYLD::%s() process state = %s\n",
1002  __FUNCTION__, StateAsCString(m_process->GetState()));
1005  Address so_addr;
1006  // Set the notification breakpoint and install a breakpoint callback
1007  // function that will get called each time the breakpoint gets hit. We
1008  // will use this to track when shared libraries get loaded/unloaded.
1009  bool resolved = m_process->GetTarget().ResolveLoadAddress(
1011  if (!resolved) {
1012  ModuleSP dyld_module_sp = GetDYLDModule();
1013  if (dyld_module_sp) {
1014  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
1015 
1016  UpdateImageLoadAddress(dyld_module_sp.get(), m_dyld);
1017  resolved = m_process->GetTarget().ResolveLoadAddress(
1019  }
1020  }
1021 
1022  if (resolved) {
1023  Breakpoint *dyld_break =
1024  m_process->GetTarget().CreateBreakpoint(so_addr, true, false).get();
1026  this, true);
1027  dyld_break->SetBreakpointKind("shared-library-event");
1028  m_break_id = dyld_break->GetID();
1029  }
1030  }
1031  }
1033 }
1034 
1036  Status error;
1037  // In order for us to tell if we can load a shared library we verify that the
1038  // dylib_info_addr isn't zero (which means no shared libraries have been set
1039  // yet, or dyld is currently mucking with the shared library list).
1041  // TODO: also check the _dyld_global_lock_held variable in
1042  // libSystem.B.dylib?
1043  // TODO: check the malloc lock?
1044  // TODO: check the objective C lock?
1046  return error; // Success
1047  }
1048 
1049  error.SetErrorString("unsafe to load or unload shared libraries");
1050  return error;
1051 }
1052 
1054  lldb::addr_t &base_address, UUID &uuid, LazyBool &using_shared_cache,
1055  LazyBool &private_shared_cache) {
1056  base_address = LLDB_INVALID_ADDRESS;
1057  uuid.Clear();
1058  using_shared_cache = eLazyBoolCalculate;
1059  private_shared_cache = eLazyBoolCalculate;
1060 
1061  if (m_process) {
1062  addr_t all_image_infos = m_process->GetImageInfoAddress();
1063 
1064  // The address returned by GetImageInfoAddress may be the address of dyld
1065  // (don't want) or it may be the address of the dyld_all_image_infos
1066  // structure (want). The first four bytes will be either the version field
1067  // (all_image_infos) or a Mach-O file magic constant. Version 13 and higher
1068  // of dyld_all_image_infos is required to get the sharedCacheUUID field.
1069 
1070  Status err;
1071  uint32_t version_or_magic =
1072  m_process->ReadUnsignedIntegerFromMemory(all_image_infos, 4, -1, err);
1073  if (version_or_magic != static_cast<uint32_t>(-1) &&
1074  version_or_magic != llvm::MachO::MH_MAGIC &&
1075  version_or_magic != llvm::MachO::MH_CIGAM &&
1076  version_or_magic != llvm::MachO::MH_MAGIC_64 &&
1077  version_or_magic != llvm::MachO::MH_CIGAM_64 &&
1078  version_or_magic >= 13) {
1079  addr_t sharedCacheUUID_address = LLDB_INVALID_ADDRESS;
1080  int wordsize = m_process->GetAddressByteSize();
1081  if (wordsize == 8) {
1082  sharedCacheUUID_address =
1083  all_image_infos + 160; // sharedCacheUUID <mach-o/dyld_images.h>
1084  }
1085  if (wordsize == 4) {
1086  sharedCacheUUID_address =
1087  all_image_infos + 84; // sharedCacheUUID <mach-o/dyld_images.h>
1088  }
1089  if (sharedCacheUUID_address != LLDB_INVALID_ADDRESS) {
1090  uuid_t shared_cache_uuid;
1091  if (m_process->ReadMemory(sharedCacheUUID_address, shared_cache_uuid,
1092  sizeof(uuid_t), err) == sizeof(uuid_t)) {
1093  uuid = UUID::fromOptionalData(shared_cache_uuid, 16);
1094  if (uuid.IsValid()) {
1095  using_shared_cache = eLazyBoolYes;
1096  }
1097  }
1098 
1099  if (version_or_magic >= 15) {
1100  // The sharedCacheBaseAddress field is the next one in the
1101  // dyld_all_image_infos struct.
1102  addr_t sharedCacheBaseAddr_address = sharedCacheUUID_address + 16;
1103  Status error;
1104  base_address = m_process->ReadUnsignedIntegerFromMemory(
1105  sharedCacheBaseAddr_address, wordsize, LLDB_INVALID_ADDRESS,
1106  error);
1107  if (error.Fail())
1108  base_address = LLDB_INVALID_ADDRESS;
1109  }
1110 
1111  return true;
1112  }
1113 
1114  //
1115  // add
1116  // NB: sharedCacheBaseAddress is the next field in dyld_all_image_infos
1117  // after
1118  // sharedCacheUUID -- that is, 16 bytes after it, if we wanted to fetch
1119  // it.
1120  }
1121  }
1122  return false;
1123 }
1124 
1128  return false;
1129 }
1130 
1132  PluginManager::RegisterPlugin(GetPluginNameStatic(),
1135 }
1136 
1139  PluginManager::UnregisterPlugin(CreateInstance);
1140 }
1141 
1143  return "Dynamic loader plug-in that watches for shared library loads/unloads "
1144  "in MacOSX user processes.";
1145 }
1146 
1148  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
1149 
1150  switch (m_dyld.header.magic) {
1151  case llvm::MachO::MH_MAGIC:
1152  case llvm::MachO::MH_CIGAM:
1153  return 4;
1154 
1155  case llvm::MachO::MH_MAGIC_64:
1156  case llvm::MachO::MH_CIGAM_64:
1157  return 8;
1158 
1159  default:
1160  break;
1161  }
1162  return 0;
1163 }
1164 
1166  switch (magic) {
1167  case llvm::MachO::MH_MAGIC:
1168  case llvm::MachO::MH_MAGIC_64:
1169  return endian::InlHostByteOrder();
1170 
1171  case llvm::MachO::MH_CIGAM:
1172  case llvm::MachO::MH_CIGAM_64:
1174  return lldb::eByteOrderLittle;
1175  else
1176  return lldb::eByteOrderBig;
1177 
1178  default:
1179  break;
1180  }
1181  return lldb::eByteOrderInvalid;
1182 }
lldb_private::UUID
Definition: UUID.h:23
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Get the ArchSpec for this object file.
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Definition: ArchSpec.cpp:668
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DynamicLoaderMacOSXDYLD::AddModulesUsingImageInfosAddress
bool AddModulesUsingImageInfosAddress(lldb::addr_t image_infos_addr, uint32_t image_infos_count)
Definition: DynamicLoaderMacOSXDYLD.cpp:536
lldb_private::Process
Definition: Process.h:338
lldb_private::Target::GetExecutableModulePointer
Module * GetExecutableModulePointer()
Definition: Target.cpp:1371
lldb_private::TypeSystemClang::GetBuiltinTypeForEncodingAndBitSize
CompilerType GetBuiltinTypeForEncodingAndBitSize(lldb::Encoding encoding, size_t bit_size) override
Definition: TypeSystemClang.cpp:795
Module.h
DynamicLoaderDarwin.h
DynamicLoaderMacOSXDYLD::UpdateImageInfosHeaderAndLoadCommands
void UpdateImageInfosHeaderAndLoadCommands(ImageInfo::collection &image_infos, uint32_t infos_count, bool update_executable)
Definition: DynamicLoaderMacOSXDYLD.cpp:920
lldb_private::Process::GetThreadList
ThreadList & GetThreadList()
Definition: Process.h:2073
DynamicLoaderMacOSXDYLD::DynamicLoaderMacOSXDYLD
DynamicLoaderMacOSXDYLD(lldb_private::Process *process)
Definition: DynamicLoaderMacOSXDYLD.cpp:98
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:1206
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:1165
lldb_private::Module
Definition: Module.h:85
lldb::offset_t
uint64_t offset_t
Definition: lldb-types.h:87
lldb_private::ValueList
Definition: Value.h:157
StackFrame.h
DynamicLoaderMacOSXDYLD::PutToLog
void PutToLog(lldb_private::Log *log) const
Definition: DynamicLoaderMacOSXDYLD.cpp:978
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:1984
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:345
lldb_private::ArchSpec::GetTriple
llvm::Triple & GetTriple()
Architecture triple accessor.
Definition: ArchSpec.h:455
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:321
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:1016
DynamicLoaderMacOSXDYLD::DYLDAllImageInfos::notification
lldb::addr_t notification
Definition: DynamicLoaderMacOSXDYLD.h:102
lldb_private::Target::ResolveLoadAddress
bool ResolveLoadAddress(lldb::addr_t load_addr, Address &so_addr, uint32_t stop_id=SectionLoadHistory::eStopIDNow)
Definition: Target.cpp:2893
Debugger.h
lldb_private::Target
Definition: Target.h:464
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:474
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:223
DynamicLoaderMacOSXDYLD::DYLDAllImageInfos::dylib_info_addr
lldb::addr_t dylib_info_addr
Definition: DynamicLoaderMacOSXDYLD.h:101
ABI.h
lldb_private::Target::GetImages
const ModuleList & GetImages() const
Get accessor for the images for this process.
Definition: Target.h:938
lldb_private::Process::GetState
lldb::StateType GetState()
Get accessor for the current process state.
Definition: Process.cpp:1294
lldb_private::DynamicLoaderDarwin::SetDYLDModule
void SetDYLDModule(lldb::ModuleSP &dyld_module_sp)
Definition: DynamicLoaderDarwin.cpp:605
lldb_private::DataExtractor::PeekCStr
const char * PeekCStr(lldb::offset_t offset) const
Peek at a C string at offset.
Definition: DataExtractor.cpp:832
lldb_private::Value::SetCompilerType
void SetCompilerType(const CompilerType &compiler_type)
Definition: Value.cpp:251
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:313
Target.h
lldb_private::DataExtractor::SetByteOrder
void SetByteOrder(lldb::ByteOrder byte_order)
Set the byte_order value.
Definition: DataExtractor.h:931
lldb_private::Value::GetScalar
const Scalar & GetScalar() const
Definition: Value.h:112
DynamicLoaderMacOSXDYLD::m_mutex
std::recursive_mutex m_mutex
Definition: DynamicLoaderMacOSXDYLD.h:163
lldb_private::FileSpec
Definition: FileSpec.h:56
DynamicLoaderMacOSXDYLD::InitializeFromAllImageInfos
bool InitializeFromAllImageInfos()
Definition: DynamicLoaderMacOSXDYLD.cpp:703
lldb_private::DynamicLoaderDarwin::UpdateDYLDImageInfoFromNewImageInfo
void UpdateDYLDImageInfoFromNewImageInfo(ImageInfo &image_info)
Definition: DynamicLoaderDarwin.cpp:590
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:159
lldb_private::ModuleList::GetSize
size_t GetSize() const
Gets the size of the module list.
Definition: ModuleList.cpp:630
lldb_private::ValueList::PushValue
void PushValue(const Value &value)
Definition: Value.cpp:665
lldb_private::DynamicLoaderDarwin::AddModulesUsingImageInfos
bool AddModulesUsingImageInfos(ImageInfo::collection &image_infos)
Definition: DynamicLoaderDarwin.cpp:614
lldb_private::DynamicLoaderDarwin::ImageInfo::Clear
void Clear(bool load_cmd_data_only)
Definition: DynamicLoaderDarwin.h:125
DynamicLoaderMacOSXDYLD::DoInitialImageFetch
void DoInitialImageFetch() override
Definition: DynamicLoaderMacOSXDYLD.cpp:185
DynamicLoaderMacOSXDYLD::ReadAllImageInfosStructure
bool ReadAllImageInfosStructure()
Definition: DynamicLoaderMacOSXDYLD.cpp:415
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:264
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:81
DynamicLoaderMacOSXDYLD::ParseLoadCommands
uint32_t ParseLoadCommands(const lldb_private::DataExtractor &data, ImageInfo &dylib_info, lldb_private::FileSpec *lc_id_dylinker)
Definition: DynamicLoaderMacOSXDYLD.cpp:831
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::eLoadDependentsNo
@ eLoadDependentsNo
Definition: Target.h:65
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:1282
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:109
lldb_private::DataExtractor::SetAddressByteSize
void SetAddressByteSize(uint32_t addr_size)
Set the address byte size.
Definition: DataExtractor.h:845
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:1053
lldb_private::DataExtractor::GetByteOrder
lldb::ByteOrder GetByteOrder() const
Get the current byte order value.
Definition: DataExtractor.h:594
lldb_private::Process::GetAddressByteSize
uint32_t GetAddressByteSize() const
Definition: Process.cpp:3323
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:324
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:316
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:106
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:317
DynamicLoaderMacOSXDYLD::m_dyld_all_image_infos_stop_id
uint32_t m_dyld_all_image_infos_stop_id
Definition: DynamicLoaderMacOSXDYLD.h:161
lldb::eBasicTypeVoid
@ eBasicTypeVoid
Definition: lldb-enumerations.h:743
DynamicLoaderMacOSXDYLD.h
ThreadPlanRunToAddress.h
DynamicLoaderMacOSXDYLD::DYLDAllImageInfos::processDetachedFromSharedRegion
bool processDetachedFromSharedRegion
Definition: DynamicLoaderMacOSXDYLD.h:103
lldb_private::ThreadList::GetThreadAtIndex
lldb::ThreadSP GetThreadAtIndex(uint32_t idx, bool can_update=true)
Definition: ThreadList.cpp:91
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:684
DynamicLoaderMacOS::Terminate
static void Terminate()
Definition: DynamicLoaderMacOS.cpp:506
DynamicLoaderMacOSXDYLD::GetPluginDescriptionStatic
static llvm::StringRef GetPluginDescriptionStatic()
Definition: DynamicLoaderMacOSXDYLD.cpp:1142
ObjectFile.h
lldb_private::UserID::GetID
lldb::user_id_t GetID() const
Get accessor for the user ID.
Definition: UserID.h:47
lldb_private::Target::SetExecutableModule
void SetExecutableModule(lldb::ModuleSP &module_sp, LoadDependentFiles load_dependent_files=eLoadDependentsDefault)
Set the main executable module.
Definition: Target.cpp:1406
LLDB_INVALID_BREAK_ID
#define LLDB_INVALID_BREAK_ID
Definition: lldb-defines.h:37
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:164
lldb_private::Symbol::GetName
ConstString GetName() const
Definition: Symbol.cpp:501
lldb_private::ExecutionContext::GetThreadRef
Thread & GetThreadRef() const
Returns a reference to the thread object.
Definition: ExecutionContext.cpp:234
DynamicLoaderMacOSXDYLD::m_dyld_all_image_infos
DYLDAllImageInfos m_dyld_all_image_infos
Definition: DynamicLoaderMacOSXDYLD.h:160
DynamicLoaderMacOSXDYLD::NeedToDoInitialImageFetch
bool NeedToDoInitialImageFetch() override
Definition: DynamicLoaderMacOSXDYLD.cpp:305
lldb_private::Target::GetArchitecture
const ArchSpec & GetArchitecture() const
Definition: Target.h:980
DynamicLoaderMacOSXDYLD::DYLDAllImageInfos::dylib_info_count
uint32_t dylib_info_count
Definition: DynamicLoaderMacOSXDYLD.h:100
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:96
uint32_t
DynamicLoaderMacOSXDYLD::AddrByteSize
uint32_t AddrByteSize()
Definition: DynamicLoaderMacOSXDYLD.cpp:1147
lldb_private::Address
Definition: Address.h:59
DEBUG_PRINTF
#define DEBUG_PRINTF(fmt,...)
Definition: DynamicLoaderMacOSXDYLD.cpp:39
lldb_private::Target::ModulesDidLoad
void ModulesDidLoad(ModuleList &module_list)
Definition: Target.cpp:1623
lldb_private::ObjectFile::GetStrata
Strata GetStrata()
Definition: ObjectFile.h:643
DynamicLoaderMacOSXDYLD::CreateInstance
static lldb_private::DynamicLoader * CreateInstance(lldb_private::Process *process, bool force)
Definition: DynamicLoaderMacOSXDYLD.cpp:56
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:413
lldb_private::ModuleList::AppendIfNeeded
bool AppendIfNeeded(const lldb::ModuleSP &new_module, bool notify=true)
Append a module to the module list, if it is not already there.
lldb_private::ThreadList::GetSize
uint32_t GetSize(bool can_update=true)
Definition: ThreadList.cpp:83
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:64
UINT32_MAX
#define UINT32_MAX
Definition: lldb-defines.h:19
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:425
DynamicLoaderMacOSXDYLD::DYLDAllImageInfos::libSystemInitialized
bool libSystemInitialized
Definition: DynamicLoaderMacOSXDYLD.h:104
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:943
LLDB_INVALID_ADDRESS
#define LLDB_INVALID_ADDRESS
Definition: lldb-defines.h:74
DynamicLoaderMacOSXDYLD::ClearNotificationBreakpoint
void ClearNotificationBreakpoint() override
Definition: DynamicLoaderMacOSXDYLD.cpp:175
lldb_private::ModuleList::LogUUIDAndPaths
void LogUUIDAndPaths(Log *log, const char *prefix_cstr)
Definition: ModuleList.cpp:645
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
DynamicLoaderMacOSXDYLD::GetPluginNameStatic
static llvm::StringRef GetPluginNameStatic()
Definition: DynamicLoaderMacOSXDYLD.h:46
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:1480
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:105
lldb_private::TypeSystemClang::GetBasicType
CompilerType GetBasicType(lldb::BasicType type)
Definition: TypeSystemClang.cpp:930
DynamicLoaderMacOSXDYLD::ReadMachHeader
bool ReadMachHeader(lldb::addr_t addr, llvm::MachO::mach_header *header, lldb_private::DataExtractor *load_command_data)
Definition: DynamicLoaderMacOSXDYLD.cpp:763
lldb::eByteOrderBig
@ eByteOrderBig
Definition: lldb-enumerations.h:140
lldb_private::TypeSystemClang
A TypeSystem implementation based on Clang.
Definition: TypeSystemClang.h:105
lldb_private::Process::GetABI
const lldb::ABISP & GetABI()
Definition: Process.cpp:1482
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:337
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:2056
LLDB_PLUGIN_DEFINE
#define LLDB_PLUGIN_DEFINE(PluginName)
Definition: PluginManager.h:31
lldb_private::Log
Definition: Log.h:48
DynamicLoaderMacOSXDYLD::IsFullyInitialized
bool IsFullyInitialized() override
Return whether the dynamic loader is fully initialized and it's safe to call its APIs.
Definition: DynamicLoaderMacOSXDYLD.cpp:1125
lldb_private::FileSpec::SetFile
void SetFile(llvm::StringRef path, Style style)
Change the file specified with a new path.
Definition: FileSpec.cpp:172
DynamicLoaderMacOSXDYLD::DYLDAllImageInfos::version
uint32_t version
Definition: DynamicLoaderMacOSXDYLD.h:99
lldb_private::Module::GetArchitecture
const ArchSpec & GetArchitecture() const
Get const accessor for the module architecture.
Definition: Module.cpp:1076
lldb_private::Symbol::GetLoadAddress
lldb::addr_t GetLoadAddress(Target *target) const
Definition: Symbol.cpp:494
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:171
PATH_MAX
#define PATH_MAX
Definition: windows/PosixApi.h:25
lldb_private::GetLog
Log * GetLog(Cat mask)
Retrieve the Log object for the channel associated with the given log enum.
Definition: Log.h:235
lldb_private::Process::GetStopID
uint32_t GetStopID() const
Definition: Process.h:1365
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:965
lldb
Definition: SBAddress.h:15
RegisterContext.h
DynamicLoaderMacOSXDYLD::Terminate
static void Terminate()
Definition: DynamicLoaderMacOSXDYLD.cpp:1137
LLDBLog.h
DynamicLoaderMacOSXDYLD::Initialize
static void Initialize()
Definition: DynamicLoaderMacOSXDYLD.cpp:1131
lldb_private::ObjectFile
Definition: ObjectFile.h:60
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:577
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:80
DynamicLoaderMacOSXDYLD::DoClear
void DoClear() override
Definition: DynamicLoaderMacOSXDYLD.cpp:159
lldb::ByteOrder
ByteOrder
Byte ordering definitions.
Definition: lldb-enumerations.h:138
DynamicLoaderMacOSXDYLD::SetNotificationBreakpoint
bool SetNotificationBreakpoint() override
Definition: DynamicLoaderMacOSXDYLD.cpp:1000
lldb_private::DynamicLoaderDarwin::Segment::maxprot
uint32_t maxprot
Definition: DynamicLoaderDarwin.h:83
lldb_private::Log::PutCString
void PutCString(const char *cstr)
Definition: Log.cpp:117
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:1035