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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  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  process->GetTarget().GetDebugger().GetAsyncErrorStream()->Printf(
404  "No ABI plugin located for triple %s -- shared libraries will not be "
405  "registered!\n",
406  process->GetTarget().GetArchitecture().GetTriple().getTriple().c_str());
407  }
408 
409  // Return true to stop the target, false to just let the target run
410  return dyld_instance->GetStopWhenImagesChange();
411 }
412 
414  std::lock_guard<std::recursive_mutex> guard(m_mutex);
415 
416  // the all image infos is already valid for this process stop ID
418  return true;
419 
422  ByteOrder byte_order =
424  uint32_t addr_size =
426 
427  uint8_t buf[256];
428  DataExtractor data(buf, sizeof(buf), byte_order, addr_size);
429  lldb::offset_t offset = 0;
430 
431  const size_t count_v2 = sizeof(uint32_t) + // version
432  sizeof(uint32_t) + // infoArrayCount
433  addr_size + // infoArray
434  addr_size + // notification
435  addr_size + // processDetachedFromSharedRegion +
436  // libSystemInitialized + pad
437  addr_size; // dyldImageLoadAddress
438  const size_t count_v11 = count_v2 + addr_size + // jitInfo
439  addr_size + // dyldVersion
440  addr_size + // errorMessage
441  addr_size + // terminationFlags
442  addr_size + // coreSymbolicationShmPage
443  addr_size + // systemOrderFlag
444  addr_size + // uuidArrayCount
445  addr_size + // uuidArray
446  addr_size + // dyldAllImageInfosAddress
447  addr_size + // initialImageCount
448  addr_size + // errorKind
449  addr_size + // errorClientOfDylibPath
450  addr_size + // errorTargetDylibPath
451  addr_size; // errorSymbol
452  const size_t count_v13 = count_v11 + addr_size + // sharedCacheSlide
453  sizeof(uuid_t); // sharedCacheUUID
454  UNUSED_IF_ASSERT_DISABLED(count_v13);
455  assert(sizeof(buf) >= count_v13);
456 
457  Status error;
459  4) {
460  m_dyld_all_image_infos.version = data.GetU32(&offset);
461  // If anything in the high byte is set, we probably got the byte order
462  // incorrect (the process might not have it set correctly yet due to
463  // attaching to a program without a specified file).
464  if (m_dyld_all_image_infos.version & 0xff000000) {
465  // We have guessed the wrong byte order. Swap it and try reading the
466  // version again.
467  if (byte_order == eByteOrderLittle)
468  byte_order = eByteOrderBig;
469  else
470  byte_order = eByteOrderLittle;
471 
472  data.SetByteOrder(byte_order);
473  offset = 0;
474  m_dyld_all_image_infos.version = data.GetU32(&offset);
475  }
476  } else {
477  return false;
478  }
479 
480  const size_t count =
481  (m_dyld_all_image_infos.version >= 11) ? count_v11 : count_v2;
482 
483  const size_t bytes_read =
485  if (bytes_read == count) {
486  offset = 0;
487  m_dyld_all_image_infos.version = data.GetU32(&offset);
492  data.GetU8(&offset);
494  // Adjust for padding.
495  offset += addr_size - 2;
497  if (m_dyld_all_image_infos.version >= 11) {
498  offset += addr_size * 8;
499  uint64_t dyld_all_image_infos_addr = data.GetAddress(&offset);
500 
501  // When we started, we were given the actual address of the
502  // all_image_infos struct (probably via TASK_DYLD_INFO) in memory -
503  // this address is stored in m_dyld_all_image_infos_addr and is the
504  // most accurate address we have.
505 
506  // We read the dyld_all_image_infos struct from memory; it contains its
507  // own address. If the address in the struct does not match the actual
508  // address, the dyld we're looking at has been loaded at a different
509  // location (slid) from where it intended to load. The addresses in
510  // the dyld_all_image_infos struct are the original, non-slid
511  // addresses, and need to be adjusted. Most importantly the address of
512  // dyld and the notification address need to be adjusted.
513 
514  if (dyld_all_image_infos_addr != m_dyld_all_image_infos_addr) {
515  uint64_t image_infos_offset =
516  dyld_all_image_infos_addr -
518  uint64_t notification_offset =
522  m_dyld_all_image_infos_addr - image_infos_offset;
524  m_dyld_all_image_infos.dyldImageLoadAddress + notification_offset;
525  }
526  }
528  return true;
529  }
530  }
531  return false;
532 }
533 
535  lldb::addr_t image_infos_addr, uint32_t image_infos_count) {
536  ImageInfo::collection image_infos;
538  LLDB_LOGF(log, "Adding %d modules.\n", image_infos_count);
539 
540  std::lock_guard<std::recursive_mutex> guard(m_mutex);
541  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
543  return true;
544 
545  StructuredData::ObjectSP image_infos_json_sp =
546  m_process->GetLoadedDynamicLibrariesInfos(image_infos_addr,
547  image_infos_count);
548  if (image_infos_json_sp.get() && image_infos_json_sp->GetAsDictionary() &&
549  image_infos_json_sp->GetAsDictionary()->HasKey("images") &&
550  image_infos_json_sp->GetAsDictionary()
551  ->GetValueForKey("images")
552  ->GetAsArray() &&
553  image_infos_json_sp->GetAsDictionary()
554  ->GetValueForKey("images")
555  ->GetAsArray()
556  ->GetSize() == image_infos_count) {
557  bool return_value = false;
558  if (JSONImageInformationIntoImageInfo(image_infos_json_sp, image_infos)) {
560  return_value = AddModulesUsingImageInfos(image_infos);
561  }
563  return return_value;
564  }
565 
566  if (!ReadImageInfos(image_infos_addr, image_infos_count, image_infos))
567  return false;
568 
569  UpdateImageInfosHeaderAndLoadCommands(image_infos, image_infos_count, false);
570  bool return_value = AddModulesUsingImageInfos(image_infos);
572  return return_value;
573 }
574 
576  lldb::addr_t image_infos_addr, uint32_t image_infos_count) {
577  ImageInfo::collection image_infos;
579 
580  std::lock_guard<std::recursive_mutex> guard(m_mutex);
581  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
583  return true;
584 
585  // First read in the image_infos for the removed modules, and their headers &
586  // load commands.
587  if (!ReadImageInfos(image_infos_addr, image_infos_count, image_infos)) {
588  if (log)
589  log->PutCString("Failed reading image infos array.");
590  return false;
591  }
592 
593  LLDB_LOGF(log, "Removing %d modules.", image_infos_count);
594 
595  ModuleList unloaded_module_list;
596  for (uint32_t idx = 0; idx < image_infos.size(); ++idx) {
597  if (log) {
598  LLDB_LOGF(log, "Removing module at address=0x%16.16" PRIx64 ".",
599  image_infos[idx].address);
600  image_infos[idx].PutToLog(log);
601  }
602 
603  // Remove this image_infos from the m_all_image_infos. We do the
604  // comparison by address rather than by file spec because we can have many
605  // modules with the same "file spec" in the case that they are modules
606  // loaded from memory.
607  //
608  // Also copy over the uuid from the old entry to the removed entry so we
609  // can use it to lookup the module in the module list.
610 
611  ImageInfo::collection::iterator pos, end = m_dyld_image_infos.end();
612  for (pos = m_dyld_image_infos.begin(); pos != end; pos++) {
613  if (image_infos[idx].address == (*pos).address) {
614  image_infos[idx].uuid = (*pos).uuid;
615 
616  // Add the module from this image_info to the "unloaded_module_list".
617  // We'll remove them all at one go later on.
618 
619  ModuleSP unload_image_module_sp(
620  FindTargetModuleForImageInfo(image_infos[idx], false, nullptr));
621  if (unload_image_module_sp.get()) {
622  // When we unload, be sure to use the image info from the old list,
623  // since that has sections correctly filled in.
624  UnloadModuleSections(unload_image_module_sp.get(), *pos);
625  unloaded_module_list.AppendIfNeeded(unload_image_module_sp);
626  } else {
627  if (log) {
628  LLDB_LOGF(log, "Could not find module for unloading info entry:");
629  image_infos[idx].PutToLog(log);
630  }
631  }
632 
633  // Then remove it from the m_dyld_image_infos:
634 
635  m_dyld_image_infos.erase(pos);
636  break;
637  }
638  }
639 
640  if (pos == end) {
641  if (log) {
642  LLDB_LOGF(log, "Could not find image_info entry for unloading image:");
643  image_infos[idx].PutToLog(log);
644  }
645  }
646  }
647  if (unloaded_module_list.GetSize() > 0) {
648  if (log) {
649  log->PutCString("Unloaded:");
650  unloaded_module_list.LogUUIDAndPaths(
651  log, "DynamicLoaderMacOSXDYLD::ModulesDidUnload");
652  }
653  m_process->GetTarget().GetImages().Remove(unloaded_module_list);
654  }
656  return true;
657 }
658 
660  lldb::addr_t image_infos_addr, uint32_t image_infos_count,
661  ImageInfo::collection &image_infos) {
662  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
663  const ByteOrder endian = GetByteOrderFromMagic(m_dyld.header.magic);
664  const uint32_t addr_size = m_dyld.GetAddressByteSize();
665 
666  image_infos.resize(image_infos_count);
667  const size_t count = image_infos.size() * 3 * addr_size;
668  DataBufferHeap info_data(count, 0);
669  Status error;
670  const size_t bytes_read = m_process->ReadMemory(
671  image_infos_addr, info_data.GetBytes(), info_data.GetByteSize(), error);
672  if (bytes_read == count) {
673  lldb::offset_t info_data_offset = 0;
674  DataExtractor info_data_ref(info_data.GetBytes(), info_data.GetByteSize(),
675  endian, addr_size);
676  for (size_t i = 0;
677  i < image_infos.size() && info_data_ref.ValidOffset(info_data_offset);
678  i++) {
679  image_infos[i].address = info_data_ref.GetAddress(&info_data_offset);
680  lldb::addr_t path_addr = info_data_ref.GetAddress(&info_data_offset);
681  image_infos[i].mod_date = info_data_ref.GetAddress(&info_data_offset);
682 
683  char raw_path[PATH_MAX];
684  m_process->ReadCStringFromMemory(path_addr, raw_path, sizeof(raw_path),
685  error);
686  // don't resolve the path
687  if (error.Success()) {
688  image_infos[i].file_spec.SetFile(raw_path, FileSpec::Style::native);
689  }
690  }
691  return true;
692  } else {
693  return false;
694  }
695 }
696 
697 // If we have found where the "_dyld_all_image_infos" lives in memory, read the
698 // current info from it, and then update all image load addresses (or lack
699 // thereof). Only do this if this is the first time we're reading the dyld
700 // infos. Return true if we actually read anything, and false otherwise.
703 
704  std::lock_guard<std::recursive_mutex> guard(m_mutex);
705  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
707  m_dyld_image_infos.size() != 0)
708  return false;
709 
711  // Nothing to load or unload?
713  return true;
714 
716  // DYLD is updating the images now. So we should say we have no images,
717  // and then we'll
718  // figure it out when we hit the added breakpoint.
719  return false;
720  } else {
724  DEBUG_PRINTF("%s", "unable to read all data for all_dylib_infos.");
725  m_dyld_image_infos.clear();
726  }
727  }
728 
729  // Now we have one more bit of business. If there is a library left in the
730  // images for our target that doesn't have a load address, then it must be
731  // something that we were expecting to load (for instance we read a load
732  // command for it) but it didn't in fact load - probably because
733  // DYLD_*_PATH pointed to an equivalent version. We don't want it to stay
734  // in the target's module list or it will confuse us, so unload it here.
735  Target &target = m_process->GetTarget();
736  ModuleList not_loaded_modules;
737  for (ModuleSP module_sp : target.GetImages().Modules()) {
738  if (!module_sp->IsLoadedInTarget(&target)) {
739  if (log) {
740  StreamString s;
741  module_sp->GetDescription(s.AsRawOstream());
742  LLDB_LOGF(log, "Unloading pre-run module: %s.", s.GetData());
743  }
744  not_loaded_modules.Append(module_sp);
745  }
746  }
747 
748  if (not_loaded_modules.GetSize() != 0) {
749  target.GetImages().Remove(not_loaded_modules);
750  }
751 
752  return true;
753  } else
754  return false;
755 }
756 
757 // Read a mach_header at ADDR into HEADER, and also fill in the load command
758 // data into LOAD_COMMAND_DATA if it is non-NULL.
759 //
760 // Returns true if we succeed, false if we fail for any reason.
762  llvm::MachO::mach_header *header,
763  DataExtractor *load_command_data) {
764  DataBufferHeap header_bytes(sizeof(llvm::MachO::mach_header), 0);
765  Status error;
766  size_t bytes_read = m_process->ReadMemory(addr, header_bytes.GetBytes(),
767  header_bytes.GetByteSize(), error);
768  if (bytes_read == sizeof(llvm::MachO::mach_header)) {
769  lldb::offset_t offset = 0;
770  ::memset(header, 0, sizeof(llvm::MachO::mach_header));
771 
772  // Get the magic byte unswapped so we can figure out what we are dealing
773  // with
774  DataExtractor data(header_bytes.GetBytes(), header_bytes.GetByteSize(),
776  header->magic = data.GetU32(&offset);
777  lldb::addr_t load_cmd_addr = addr;
778  data.SetByteOrder(
780  switch (header->magic) {
781  case llvm::MachO::MH_MAGIC:
782  case llvm::MachO::MH_CIGAM:
783  data.SetAddressByteSize(4);
784  load_cmd_addr += sizeof(llvm::MachO::mach_header);
785  break;
786 
787  case llvm::MachO::MH_MAGIC_64:
788  case llvm::MachO::MH_CIGAM_64:
789  data.SetAddressByteSize(8);
790  load_cmd_addr += sizeof(llvm::MachO::mach_header_64);
791  break;
792 
793  default:
794  return false;
795  }
796 
797  // Read the rest of dyld's mach header
798  if (data.GetU32(&offset, &header->cputype,
799  (sizeof(llvm::MachO::mach_header) / sizeof(uint32_t)) -
800  1)) {
801  if (load_command_data == nullptr)
802  return true; // We were able to read the mach_header and weren't asked
803  // to read the load command bytes
804 
805  DataBufferSP load_cmd_data_sp(new DataBufferHeap(header->sizeofcmds, 0));
806 
807  size_t load_cmd_bytes_read =
808  m_process->ReadMemory(load_cmd_addr, load_cmd_data_sp->GetBytes(),
809  load_cmd_data_sp->GetByteSize(), error);
810 
811  if (load_cmd_bytes_read == header->sizeofcmds) {
812  // Set the load command data and also set the correct endian swap
813  // settings and the correct address size
814  load_command_data->SetData(load_cmd_data_sp, 0, header->sizeofcmds);
815  load_command_data->SetByteOrder(data.GetByteOrder());
816  load_command_data->SetAddressByteSize(data.GetAddressByteSize());
817  return true; // We successfully read the mach_header and the load
818  // command data
819  }
820 
821  return false; // We weren't able to read the load command data
822  }
823  }
824  return false; // We failed the read the mach_header
825 }
826 
827 // Parse the load commands for an image
829  ImageInfo &dylib_info,
830  FileSpec *lc_id_dylinker) {
831  lldb::offset_t offset = 0;
832  uint32_t cmd_idx;
833  Segment segment;
834  dylib_info.Clear(true);
835 
836  for (cmd_idx = 0; cmd_idx < dylib_info.header.ncmds; cmd_idx++) {
837  // Clear out any load command specific data from DYLIB_INFO since we are
838  // about to read it.
839 
840  if (data.ValidOffsetForDataOfSize(offset,
841  sizeof(llvm::MachO::load_command))) {
842  llvm::MachO::load_command load_cmd;
843  lldb::offset_t load_cmd_offset = offset;
844  load_cmd.cmd = data.GetU32(&offset);
845  load_cmd.cmdsize = data.GetU32(&offset);
846  switch (load_cmd.cmd) {
847  case llvm::MachO::LC_SEGMENT: {
849  (const char *)data.GetData(&offset, 16), 16);
850  // We are putting 4 uint32_t values 4 uint64_t values so we have to use
851  // multiple 32 bit gets below.
852  segment.vmaddr = data.GetU32(&offset);
853  segment.vmsize = data.GetU32(&offset);
854  segment.fileoff = data.GetU32(&offset);
855  segment.filesize = data.GetU32(&offset);
856  // Extract maxprot, initprot, nsects and flags all at once
857  data.GetU32(&offset, &segment.maxprot, 4);
858  dylib_info.segments.push_back(segment);
859  } break;
860 
861  case llvm::MachO::LC_SEGMENT_64: {
863  (const char *)data.GetData(&offset, 16), 16);
864  // Extract vmaddr, vmsize, fileoff, and filesize all at once
865  data.GetU64(&offset, &segment.vmaddr, 4);
866  // Extract maxprot, initprot, nsects and flags all at once
867  data.GetU32(&offset, &segment.maxprot, 4);
868  dylib_info.segments.push_back(segment);
869  } break;
870 
871  case llvm::MachO::LC_ID_DYLINKER:
872  if (lc_id_dylinker) {
873  const lldb::offset_t name_offset =
874  load_cmd_offset + data.GetU32(&offset);
875  const char *path = data.PeekCStr(name_offset);
876  lc_id_dylinker->SetFile(path, FileSpec::Style::native);
877  FileSystem::Instance().Resolve(*lc_id_dylinker);
878  }
879  break;
880 
881  case llvm::MachO::LC_UUID:
882  dylib_info.uuid = UUID::fromOptionalData(data.GetData(&offset, 16), 16);
883  break;
884 
885  default:
886  break;
887  }
888  // Set offset to be the beginning of the next load command.
889  offset = load_cmd_offset + load_cmd.cmdsize;
890  }
891  }
892 
893  // All sections listed in the dyld image info structure will all either be
894  // fixed up already, or they will all be off by a single slide amount that is
895  // determined by finding the first segment that is at file offset zero which
896  // also has bytes (a file size that is greater than zero) in the object file.
897 
898  // Determine the slide amount (if any)
899  const size_t num_sections = dylib_info.segments.size();
900  for (size_t i = 0; i < num_sections; ++i) {
901  // Iterate through the object file sections to find the first section that
902  // starts of file offset zero and that has bytes in the file...
903  if ((dylib_info.segments[i].fileoff == 0 &&
904  dylib_info.segments[i].filesize > 0) ||
905  (dylib_info.segments[i].name == "__TEXT")) {
906  dylib_info.slide = dylib_info.address - dylib_info.segments[i].vmaddr;
907  // We have found the slide amount, so we can exit this for loop.
908  break;
909  }
910  }
911  return cmd_idx;
912 }
913 
914 // Read the mach_header and load commands for each image that the
915 // _dyld_all_image_infos structure points to and cache the results.
916 
918  ImageInfo::collection &image_infos, uint32_t infos_count,
919  bool update_executable) {
920  uint32_t exe_idx = UINT32_MAX;
921  // Read any UUID values that we can get
922  for (uint32_t i = 0; i < infos_count; i++) {
923  if (!image_infos[i].UUIDValid()) {
924  DataExtractor data; // Load command data
925  if (!ReadMachHeader(image_infos[i].address, &image_infos[i].header,
926  &data))
927  continue;
928 
929  ParseLoadCommands(data, image_infos[i], nullptr);
930 
931  if (image_infos[i].header.filetype == llvm::MachO::MH_EXECUTE)
932  exe_idx = i;
933  }
934  }
935 
936  Target &target = m_process->GetTarget();
937 
938  if (exe_idx < image_infos.size()) {
939  const bool can_create = true;
940  ModuleSP exe_module_sp(FindTargetModuleForImageInfo(image_infos[exe_idx],
941  can_create, nullptr));
942 
943  if (exe_module_sp) {
944  UpdateImageLoadAddress(exe_module_sp.get(), image_infos[exe_idx]);
945 
946  if (exe_module_sp.get() != target.GetExecutableModulePointer()) {
947  // Don't load dependent images since we are in dyld where we will know
948  // and find out about all images that are loaded. Also when setting the
949  // executable module, it will clear the targets module list, and if we
950  // have an in memory dyld module, it will get removed from the list so
951  // we will need to add it back after setting the executable module, so
952  // we first try and see if we already have a weak pointer to the dyld
953  // module, make it into a shared pointer, then add the executable, then
954  // re-add it back to make sure it is always in the list.
955  ModuleSP dyld_module_sp(GetDYLDModule());
956 
957  m_process->GetTarget().SetExecutableModule(exe_module_sp,
959 
960  if (dyld_module_sp) {
961  if (target.GetImages().AppendIfNeeded(dyld_module_sp)) {
962  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
963 
964  // Also add it to the section list.
965  UpdateImageLoadAddress(dyld_module_sp.get(), m_dyld);
966  }
967  }
968  }
969  }
970  }
971 }
972 
973 // Dump the _dyld_all_image_infos members and all current image infos that we
974 // have parsed to the file handle provided.
976  if (log == nullptr)
977  return;
978 
979  std::lock_guard<std::recursive_mutex> guard(m_mutex);
980  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
981  LLDB_LOGF(log,
982  "dyld_all_image_infos = { version=%d, count=%d, addr=0x%8.8" PRIx64
983  ", notify=0x%8.8" PRIx64 " }",
988  size_t i;
989  const size_t count = m_dyld_image_infos.size();
990  if (count > 0) {
991  log->PutCString("Loaded:");
992  for (i = 0; i < count; i++)
994  }
995 }
996 
998  DEBUG_PRINTF("DynamicLoaderMacOSXDYLD::%s() process state = %s\n",
999  __FUNCTION__, StateAsCString(m_process->GetState()));
1002  Address so_addr;
1003  // Set the notification breakpoint and install a breakpoint callback
1004  // function that will get called each time the breakpoint gets hit. We
1005  // will use this to track when shared libraries get loaded/unloaded.
1006  bool resolved = m_process->GetTarget().ResolveLoadAddress(
1008  if (!resolved) {
1009  ModuleSP dyld_module_sp = GetDYLDModule();
1010  if (dyld_module_sp) {
1011  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
1012 
1013  UpdateImageLoadAddress(dyld_module_sp.get(), m_dyld);
1014  resolved = m_process->GetTarget().ResolveLoadAddress(
1016  }
1017  }
1018 
1019  if (resolved) {
1020  Breakpoint *dyld_break =
1021  m_process->GetTarget().CreateBreakpoint(so_addr, true, false).get();
1023  this, true);
1024  dyld_break->SetBreakpointKind("shared-library-event");
1025  m_break_id = dyld_break->GetID();
1026  }
1027  }
1028  }
1030 }
1031 
1033  Status error;
1034  // In order for us to tell if we can load a shared library we verify that the
1035  // dylib_info_addr isn't zero (which means no shared libraries have been set
1036  // yet, or dyld is currently mucking with the shared library list).
1038  // TODO: also check the _dyld_global_lock_held variable in
1039  // libSystem.B.dylib?
1040  // TODO: check the malloc lock?
1041  // TODO: check the objective C lock?
1043  return error; // Success
1044  }
1045 
1046  error.SetErrorString("unsafe to load or unload shared libraries");
1047  return error;
1048 }
1049 
1051  lldb::addr_t &base_address, UUID &uuid, LazyBool &using_shared_cache,
1052  LazyBool &private_shared_cache) {
1053  base_address = LLDB_INVALID_ADDRESS;
1054  uuid.Clear();
1055  using_shared_cache = eLazyBoolCalculate;
1056  private_shared_cache = eLazyBoolCalculate;
1057 
1058  if (m_process) {
1059  addr_t all_image_infos = m_process->GetImageInfoAddress();
1060 
1061  // The address returned by GetImageInfoAddress may be the address of dyld
1062  // (don't want) or it may be the address of the dyld_all_image_infos
1063  // structure (want). The first four bytes will be either the version field
1064  // (all_image_infos) or a Mach-O file magic constant. Version 13 and higher
1065  // of dyld_all_image_infos is required to get the sharedCacheUUID field.
1066 
1067  Status err;
1068  uint32_t version_or_magic =
1069  m_process->ReadUnsignedIntegerFromMemory(all_image_infos, 4, -1, err);
1070  if (version_or_magic != static_cast<uint32_t>(-1) &&
1071  version_or_magic != llvm::MachO::MH_MAGIC &&
1072  version_or_magic != llvm::MachO::MH_CIGAM &&
1073  version_or_magic != llvm::MachO::MH_MAGIC_64 &&
1074  version_or_magic != llvm::MachO::MH_CIGAM_64 &&
1075  version_or_magic >= 13) {
1076  addr_t sharedCacheUUID_address = LLDB_INVALID_ADDRESS;
1077  int wordsize = m_process->GetAddressByteSize();
1078  if (wordsize == 8) {
1079  sharedCacheUUID_address =
1080  all_image_infos + 160; // sharedCacheUUID <mach-o/dyld_images.h>
1081  }
1082  if (wordsize == 4) {
1083  sharedCacheUUID_address =
1084  all_image_infos + 84; // sharedCacheUUID <mach-o/dyld_images.h>
1085  }
1086  if (sharedCacheUUID_address != LLDB_INVALID_ADDRESS) {
1087  uuid_t shared_cache_uuid;
1088  if (m_process->ReadMemory(sharedCacheUUID_address, shared_cache_uuid,
1089  sizeof(uuid_t), err) == sizeof(uuid_t)) {
1090  uuid = UUID::fromOptionalData(shared_cache_uuid, 16);
1091  if (uuid.IsValid()) {
1092  using_shared_cache = eLazyBoolYes;
1093  }
1094  }
1095 
1096  if (version_or_magic >= 15) {
1097  // The sharedCacheBaseAddress field is the next one in the
1098  // dyld_all_image_infos struct.
1099  addr_t sharedCacheBaseAddr_address = sharedCacheUUID_address + 16;
1100  Status error;
1101  base_address = m_process->ReadUnsignedIntegerFromMemory(
1102  sharedCacheBaseAddr_address, wordsize, LLDB_INVALID_ADDRESS,
1103  error);
1104  if (error.Fail())
1105  base_address = LLDB_INVALID_ADDRESS;
1106  }
1107 
1108  return true;
1109  }
1110 
1111  //
1112  // add
1113  // NB: sharedCacheBaseAddress is the next field in dyld_all_image_infos
1114  // after
1115  // sharedCacheUUID -- that is, 16 bytes after it, if we wanted to fetch
1116  // it.
1117  }
1118  }
1119  return false;
1120 }
1121 
1125  return false;
1126 }
1127 
1129  PluginManager::RegisterPlugin(GetPluginNameStatic(),
1132 }
1133 
1136  PluginManager::UnregisterPlugin(CreateInstance);
1137 }
1138 
1140  return "Dynamic loader plug-in that watches for shared library loads/unloads "
1141  "in MacOSX user processes.";
1142 }
1143 
1145  std::lock_guard<std::recursive_mutex> baseclass_guard(GetMutex());
1146 
1147  switch (m_dyld.header.magic) {
1148  case llvm::MachO::MH_MAGIC:
1149  case llvm::MachO::MH_CIGAM:
1150  return 4;
1151 
1152  case llvm::MachO::MH_MAGIC_64:
1153  case llvm::MachO::MH_CIGAM_64:
1154  return 8;
1155 
1156  default:
1157  break;
1158  }
1159  return 0;
1160 }
1161 
1163  switch (magic) {
1164  case llvm::MachO::MH_MAGIC:
1165  case llvm::MachO::MH_MAGIC_64:
1166  return endian::InlHostByteOrder();
1167 
1168  case llvm::MachO::MH_CIGAM:
1169  case llvm::MachO::MH_CIGAM_64:
1171  return lldb::eByteOrderLittle;
1172  else
1173  return lldb::eByteOrderBig;
1174 
1175  default:
1176  break;
1177  }
1178  return lldb::eByteOrderInvalid;
1179 }
lldb_private::UUID
Definition: UUID.h:23
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Get the ArchSpec for this object file.
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Definition: DynamicLoaderDarwin.cpp:531
DynamicLoaderMacOSXDYLD::AddModulesUsingImageInfosAddress
bool AddModulesUsingImageInfosAddress(lldb::addr_t image_infos_addr, uint32_t image_infos_count)
Definition: DynamicLoaderMacOSXDYLD.cpp:534
lldb_private::Process
Definition: Process.h:341
lldb_private::Target::GetExecutableModulePointer
Module * GetExecutableModulePointer()
Definition: Target.cpp:1359
lldb_private::TypeSystemClang::GetBuiltinTypeForEncodingAndBitSize
CompilerType GetBuiltinTypeForEncodingAndBitSize(lldb::Encoding encoding, size_t bit_size) override
Definition: TypeSystemClang.cpp:799
Module.h
DynamicLoaderDarwin.h
DynamicLoaderMacOSXDYLD::UpdateImageInfosHeaderAndLoadCommands
void UpdateImageInfosHeaderAndLoadCommands(ImageInfo::collection &image_infos, uint32_t infos_count, bool update_executable)
Definition: DynamicLoaderMacOSXDYLD.cpp:917
lldb_private::Process::GetThreadList
ThreadList & GetThreadList()
Definition: Process.h:2108
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:1209
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:1162
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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:975
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:2040
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:328
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:1000
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:2821
Debugger.h
lldb_private::Target
Definition: Target.h:451
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:101
ABI.h
lldb_private::Target::GetImages
const ModuleList & GetImages() const
Get accessor for the images for this process.
Definition: Target.h:925
lldb_private::Process::GetState
lldb::StateType GetState()
Get accessor for the current process state.
Definition: Process.cpp:1295
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: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:701
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:159
lldb_private::ModuleList::GetSize
size_t GetSize() const
Gets the size of the module list.
Definition: ModuleList.cpp:594
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:413
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:72
DynamicLoaderMacOSXDYLD::ParseLoadCommands
uint32_t ParseLoadCommands(const lldb_private::DataExtractor &data, ImageInfo &dylib_info, lldb_private::FileSpec *lc_id_dylinker)
Definition: DynamicLoaderMacOSXDYLD.cpp:828
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:64
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:1285
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:1050
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:594
lldb_private::Process::GetAddressByteSize
uint32_t GetAddressByteSize() const
Definition: Process.cpp:3348
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:313
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: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
DynamicLoaderMacOSXDYLD::GetPluginDescriptionStatic
static llvm::StringRef GetPluginDescriptionStatic()
Definition: DynamicLoaderMacOSXDYLD.cpp:1139
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:1394
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:164
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:160
DynamicLoaderMacOSXDYLD::NeedToDoInitialImageFetch
bool NeedToDoInitialImageFetch() override
Definition: DynamicLoaderMacOSXDYLD.cpp:305
lldb_private::Target::GetArchitecture
const ArchSpec & GetArchitecture() const
Definition: Target.h:967
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:95
uint32_t
DynamicLoaderMacOSXDYLD::AddrByteSize
uint32_t AddrByteSize()
Definition: DynamicLoaderMacOSXDYLD.cpp:1144
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:1611
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:64
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: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:931
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:611
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:1485
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:934
DynamicLoaderMacOSXDYLD::ReadMachHeader
bool ReadMachHeader(lldb::addr_t addr, llvm::MachO::mach_header *header, lldb_private::DataExtractor *load_command_data)
Definition: DynamicLoaderMacOSXDYLD.cpp:761
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:1487
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:2112
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:1122
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:99
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:1368
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:1134
DynamicLoaderMacOSXDYLD::Initialize
static void Initialize()
Definition: DynamicLoaderMacOSXDYLD.cpp:1128
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:575
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:997
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:1032