LLDB  mainline
DynamicLoaderHexagonDYLD.cpp
Go to the documentation of this file.
1 //===-- DynamicLoaderHexagonDYLD.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 "lldb/Core/Module.h"
11 #include "lldb/Core/ModuleSpec.h"
13 #include "lldb/Core/Section.h"
14 #include "lldb/Symbol/ObjectFile.h"
15 #include "lldb/Target/Process.h"
16 #include "lldb/Target/Target.h"
17 #include "lldb/Target/Thread.h"
19 #include "lldb/Utility/Log.h"
20 
22 
23 #include <memory>
24 
25 using namespace lldb;
26 using namespace lldb_private;
27 
29 
30 // Aidan 21/05/2014
31 //
32 // Notes about hexagon dynamic loading:
33 //
34 // When we connect to a target we find the dyld breakpoint address. We put
35 // a
36 // breakpoint there with a callback 'RendezvousBreakpointHit()'.
37 //
38 // It is possible to find the dyld structure address from the ELF symbol
39 // table,
40 // but in the case of the simulator it has not been initialized before the
41 // target calls dlinit().
42 //
43 // We can only safely parse the dyld structure after we hit the dyld
44 // breakpoint
45 // since at that time we know dlinit() must have been called.
46 //
47 
48 // Find the load address of a symbol
49 static lldb::addr_t findSymbolAddress(Process *proc, ConstString findName) {
50  assert(proc != nullptr);
51 
52  ModuleSP module = proc->GetTarget().GetExecutableModule();
53  assert(module.get() != nullptr);
54 
55  ObjectFile *exe = module->GetObjectFile();
56  assert(exe != nullptr);
57 
58  lldb_private::Symtab *symtab = exe->GetSymtab();
59  assert(symtab != nullptr);
60 
61  for (size_t i = 0; i < symtab->GetNumSymbols(); i++) {
62  const Symbol *sym = symtab->SymbolAtIndex(i);
63  assert(sym != nullptr);
64  ConstString symName = sym->GetName();
65 
66  if (ConstString::Compare(findName, symName) == 0) {
67  Address addr = sym->GetAddress();
68  return addr.GetLoadAddress(&proc->GetTarget());
69  }
70  }
71  return LLDB_INVALID_ADDRESS;
72 }
73 
75  PluginManager::RegisterPlugin(GetPluginNameStatic(),
76  GetPluginDescriptionStatic(), CreateInstance);
77 }
78 
80 
82  return "Dynamic loader plug-in that watches for shared library "
83  "loads/unloads in Hexagon processes.";
84 }
85 
87  bool force) {
88  bool create = force;
89  if (!create) {
90  const llvm::Triple &triple_ref =
91  process->GetTarget().GetArchitecture().GetTriple();
92  if (triple_ref.getArch() == llvm::Triple::hexagon)
93  create = true;
94  }
95 
96  if (create)
97  return new DynamicLoaderHexagonDYLD(process);
98  return nullptr;
99 }
100 
102  : DynamicLoader(process), m_rendezvous(process),
103  m_load_offset(LLDB_INVALID_ADDRESS), m_entry_point(LLDB_INVALID_ADDRESS),
104  m_dyld_bid(LLDB_INVALID_BREAK_ID) {}
105 
110  }
111 }
112 
114  ModuleSP executable;
115  addr_t load_offset;
116 
117  executable = GetTargetExecutable();
118 
119  // Find the difference between the desired load address in the elf file and
120  // the real load address in memory
121  load_offset = ComputeLoadOffset();
122 
123  // Check that there is a valid executable
124  if (executable.get() == nullptr)
125  return;
126 
127  // Disable JIT for hexagon targets because its not supported
128  m_process->SetCanJIT(false);
129 
130  // Enable Interpreting of function call expressions
132 
133  // Add the current executable to the module list
134  ModuleList module_list;
135  module_list.Append(executable);
136 
137  // Map the loaded sections of this executable
138  if (load_offset != LLDB_INVALID_ADDRESS)
139  UpdateLoadedSections(executable, LLDB_INVALID_ADDRESS, load_offset, true);
140 
141  // AD: confirm this?
142  // Load into LLDB all of the currently loaded executables in the stub
144 
145  // AD: confirm this?
146  // Callback for the target to give it the loaded module list
147  m_process->GetTarget().ModulesDidLoad(module_list);
148 
149  // Try to set a breakpoint at the rendezvous breakpoint. DidLaunch uses
150  // ProbeEntry() instead. That sets a breakpoint, at the dyld breakpoint
151  // address, with a callback so that when hit, the dyld structure can be
152  // parsed.
153  if (!SetRendezvousBreakpoint()) {
154  // fail
155  }
156 }
157 
159 
160 /// Checks to see if the target module has changed, updates the target
161 /// accordingly and returns the target executable module.
163  Target &target = m_process->GetTarget();
164  ModuleSP executable = target.GetExecutableModule();
165 
166  // There is no executable
167  if (!executable.get())
168  return executable;
169 
170  // The target executable file does not exits
171  if (!FileSystem::Instance().Exists(executable->GetFileSpec()))
172  return executable;
173 
174  // Prep module for loading
175  ModuleSpec module_spec(executable->GetFileSpec(),
176  executable->GetArchitecture());
177  ModuleSP module_sp(new Module(module_spec));
178 
179  // Check if the executable has changed and set it to the target executable if
180  // they differ.
181  if (module_sp.get() && module_sp->GetUUID().IsValid() &&
182  executable->GetUUID().IsValid()) {
183  // if the executable has changed ??
184  if (module_sp->GetUUID() != executable->GetUUID())
185  executable.reset();
186  } else if (executable->FileHasChanged())
187  executable.reset();
188 
189  if (executable.get())
190  return executable;
191 
192  // TODO: What case is this code used?
193  executable = target.GetOrCreateModule(module_spec, true /* notify */);
194  if (executable.get() != target.GetExecutableModulePointer()) {
195  // Don't load dependent images since we are in dyld where we will know and
196  // find out about all images that are loaded
197  target.SetExecutableModule(executable, eLoadDependentsNo);
198  }
199 
200  return executable;
201 }
202 
203 // AD: Needs to be updated?
205 
207  addr_t link_map_addr,
208  addr_t base_addr,
209  bool base_addr_is_offset) {
210  Target &target = m_process->GetTarget();
211  const SectionList *sections = GetSectionListFromModule(module);
212 
213  assert(sections && "SectionList missing from loaded module.");
214 
215  m_loaded_modules[module] = link_map_addr;
216 
217  const size_t num_sections = sections->GetSize();
218 
219  for (unsigned i = 0; i < num_sections; ++i) {
220  SectionSP section_sp(sections->GetSectionAtIndex(i));
221  lldb::addr_t new_load_addr = section_sp->GetFileAddress() + base_addr;
222 
223  // AD: 02/05/14
224  // since our memory map starts from address 0, we must not ignore
225  // sections that load to address 0. This violates the reference
226  // ELF spec, however is used for Hexagon.
227 
228  // If the file address of the section is zero then this is not an
229  // allocatable/loadable section (property of ELF sh_addr). Skip it.
230  // if (new_load_addr == base_addr)
231  // continue;
232 
233  target.SetSectionLoadAddress(section_sp, new_load_addr);
234  }
235 }
236 
237 /// Removes the loaded sections from the target in \p module.
238 ///
239 /// \param module The module to traverse.
240 void DynamicLoaderHexagonDYLD::UnloadSections(const ModuleSP module) {
241  Target &target = m_process->GetTarget();
242  const SectionList *sections = GetSectionListFromModule(module);
243 
244  assert(sections && "SectionList missing from unloaded module.");
245 
246  m_loaded_modules.erase(module);
247 
248  const size_t num_sections = sections->GetSize();
249  for (size_t i = 0; i < num_sections; ++i) {
250  SectionSP section_sp(sections->GetSectionAtIndex(i));
251  target.SetSectionUnloaded(section_sp);
252  }
253 }
254 
255 // Place a breakpoint on <_rtld_debug_state>
258 
259  // This is the original code, which want to look in the rendezvous structure
260  // to find the breakpoint address. Its backwards for us, since we can easily
261  // find the breakpoint address, since it is exported in our executable. We
262  // however know that we cant read the Rendezvous structure until we have hit
263  // the breakpoint once.
264  const ConstString dyldBpName("_rtld_debug_state");
265  addr_t break_addr = findSymbolAddress(m_process, dyldBpName);
266 
267  Target &target = m_process->GetTarget();
268 
269  // Do not try to set the breakpoint if we don't know where to put it
270  if (break_addr == LLDB_INVALID_ADDRESS) {
271  LLDB_LOGF(log, "Unable to locate _rtld_debug_state breakpoint address");
272 
273  return false;
274  }
275 
276  // Save the address of the rendezvous structure
277  m_rendezvous.SetBreakAddress(break_addr);
278 
279  // If we haven't set the breakpoint before then set it
281  Breakpoint *dyld_break =
282  target.CreateBreakpoint(break_addr, true, false).get();
283  dyld_break->SetCallback(RendezvousBreakpointHit, this, true);
284  dyld_break->SetBreakpointKind("shared-library-event");
285  m_dyld_bid = dyld_break->GetID();
286 
287  // Make sure our breakpoint is at the right address.
288  assert(target.GetBreakpointByID(m_dyld_bid)
289  ->FindLocationByAddress(break_addr)
290  ->GetBreakpoint()
291  .GetID() == m_dyld_bid);
292 
293  if (log && dyld_break == nullptr)
294  LLDB_LOGF(log, "Failed to create _rtld_debug_state breakpoint");
295 
296  // check we have successfully set bp
297  return (dyld_break != nullptr);
298  } else
299  // rendezvous already set
300  return true;
301 }
302 
303 // We have just hit our breakpoint at <_rtld_debug_state>
305  void *baton, StoppointCallbackContext *context, user_id_t break_id,
306  user_id_t break_loc_id) {
308 
309  LLDB_LOGF(log, "Rendezvous breakpoint hit!");
310 
311  DynamicLoaderHexagonDYLD *dyld_instance = nullptr;
312  dyld_instance = static_cast<DynamicLoaderHexagonDYLD *>(baton);
313 
314  // if the dyld_instance is still not valid then try to locate it on the
315  // symbol table
316  if (!dyld_instance->m_rendezvous.IsValid()) {
317  Process *proc = dyld_instance->m_process;
318 
319  const ConstString dyldStructName("_rtld_debug");
320  addr_t structAddr = findSymbolAddress(proc, dyldStructName);
321 
322  if (structAddr != LLDB_INVALID_ADDRESS) {
323  dyld_instance->m_rendezvous.SetRendezvousAddress(structAddr);
324 
325  LLDB_LOGF(log, "Found _rtld_debug structure @ 0x%08" PRIx64, structAddr);
326  } else {
327  LLDB_LOGF(log, "Unable to resolve the _rtld_debug structure");
328  }
329  }
330 
331  dyld_instance->RefreshModules();
332 
333  // Return true to stop the target, false to just let the target run.
334  return dyld_instance->GetStopWhenImagesChange();
335 }
336 
337 /// Helper method for RendezvousBreakpointHit. Updates LLDB's current set
338 /// of loaded modules.
341 
342  if (!m_rendezvous.Resolve())
343  return;
344 
347 
348  ModuleList &loaded_modules = m_process->GetTarget().GetImages();
349 
351  ModuleList new_modules;
352 
353  E = m_rendezvous.loaded_end();
354  for (I = m_rendezvous.loaded_begin(); I != E; ++I) {
355  FileSpec file(I->path);
356  FileSystem::Instance().Resolve(file);
357  ModuleSP module_sp =
358  LoadModuleAtAddress(file, I->link_addr, I->base_addr, true);
359  if (module_sp.get()) {
360  loaded_modules.AppendIfNeeded(module_sp);
361  new_modules.Append(module_sp);
362  }
363 
364  if (log) {
365  LLDB_LOGF(log, "Target is loading '%s'", I->path.c_str());
366  if (!module_sp.get())
367  LLDB_LOGF(log, "LLDB failed to load '%s'", I->path.c_str());
368  else
369  LLDB_LOGF(log, "LLDB successfully loaded '%s'", I->path.c_str());
370  }
371  }
372  m_process->GetTarget().ModulesDidLoad(new_modules);
373  }
374 
376  ModuleList old_modules;
377 
379  for (I = m_rendezvous.unloaded_begin(); I != E; ++I) {
380  FileSpec file(I->path);
381  FileSystem::Instance().Resolve(file);
382  ModuleSpec module_spec(file);
383  ModuleSP module_sp = loaded_modules.FindFirstModule(module_spec);
384 
385  if (module_sp.get()) {
386  old_modules.Append(module_sp);
387  UnloadSections(module_sp);
388  }
389 
390  LLDB_LOGF(log, "Target is unloading '%s'", I->path.c_str());
391  }
392  loaded_modules.Remove(old_modules);
393  m_process->GetTarget().ModulesDidUnload(old_modules, false);
394  }
395 }
396 
397 // AD: This is very different to the Static Loader code.
398 // It may be wise to look over this and its relation to stack
399 // unwinding.
400 ThreadPlanSP
402  bool stop) {
403  ThreadPlanSP thread_plan_sp;
404 
405  StackFrame *frame = thread.GetStackFrameAtIndex(0).get();
406  const SymbolContext &context = frame->GetSymbolContext(eSymbolContextSymbol);
407  Symbol *sym = context.symbol;
408 
409  if (sym == nullptr || !sym->IsTrampoline())
410  return thread_plan_sp;
411 
412  const ConstString sym_name =
413  sym->GetMangled().GetName(Mangled::ePreferMangled);
414  if (!sym_name)
415  return thread_plan_sp;
416 
417  SymbolContextList target_symbols;
418  Target &target = thread.GetProcess()->GetTarget();
419  const ModuleList &images = target.GetImages();
420 
421  images.FindSymbolsWithNameAndType(sym_name, eSymbolTypeCode, target_symbols);
422  size_t num_targets = target_symbols.GetSize();
423  if (!num_targets)
424  return thread_plan_sp;
425 
426  typedef std::vector<lldb::addr_t> AddressVector;
427  AddressVector addrs;
428  for (size_t i = 0; i < num_targets; ++i) {
429  SymbolContext context;
430  AddressRange range;
431  if (target_symbols.GetContextAtIndex(i, context)) {
432  context.GetAddressRange(eSymbolContextEverything, 0, false, range);
433  lldb::addr_t addr = range.GetBaseAddress().GetLoadAddress(&target);
434  if (addr != LLDB_INVALID_ADDRESS)
435  addrs.push_back(addr);
436  }
437  }
438 
439  if (addrs.size() > 0) {
440  AddressVector::iterator start = addrs.begin();
441  AddressVector::iterator end = addrs.end();
442 
443  llvm::sort(start, end);
444  addrs.erase(std::unique(start, end), end);
445  thread_plan_sp =
446  std::make_shared<ThreadPlanRunToAddress>(thread, addrs, stop);
447  }
448 
449  return thread_plan_sp;
450 }
451 
452 /// Helper for the entry breakpoint callback. Resolves the load addresses
453 /// of all dependent modules.
457  ModuleList module_list;
458 
459  if (!m_rendezvous.Resolve()) {
461  LLDB_LOGF(
462  log,
463  "DynamicLoaderHexagonDYLD::%s unable to resolve rendezvous address",
464  __FUNCTION__);
465  return;
466  }
467 
468  // The rendezvous class doesn't enumerate the main module, so track that
469  // ourselves here.
470  ModuleSP executable = GetTargetExecutable();
472 
473  for (I = m_rendezvous.begin(), E = m_rendezvous.end(); I != E; ++I) {
474  const char *module_path = I->path.c_str();
475  FileSpec file(module_path);
476  ModuleSP module_sp =
477  LoadModuleAtAddress(file, I->link_addr, I->base_addr, true);
478  if (module_sp.get()) {
479  module_list.Append(module_sp);
480  } else {
482  LLDB_LOGF(log,
483  "DynamicLoaderHexagonDYLD::%s failed loading module %s at "
484  "0x%" PRIx64,
485  __FUNCTION__, module_path, I->base_addr);
486  }
487  }
488 
489  m_process->GetTarget().ModulesDidLoad(module_list);
490 }
491 
492 /// Computes a value for m_load_offset returning the computed address on
493 /// success and LLDB_INVALID_ADDRESS on failure.
495  // Here we could send a GDB packet to know the load offset
496  //
497  // send: $qOffsets#4b
498  // get: Text=0;Data=0;Bss=0
499  //
500  // Currently qOffsets is not supported by pluginProcessGDBRemote
501  //
502  return 0;
503 }
504 
505 // Here we must try to read the entry point directly from the elf header. This
506 // is possible if the process is not relocatable or dynamically linked.
507 //
508 // an alternative is to look at the PC if we can be sure that we have connected
509 // when the process is at the entry point.
510 // I dont think that is reliable for us.
513  return m_entry_point;
514  // check we have a valid process
515  if (m_process == nullptr)
516  return LLDB_INVALID_ADDRESS;
517  // Get the current executable module
518  Module &module = *(m_process->GetTarget().GetExecutableModule().get());
519  // Get the object file (elf file) for this module
520  lldb_private::ObjectFile &object = *(module.GetObjectFile());
521  // Check if the file is executable (ie, not shared object or relocatable)
522  if (object.IsExecutable()) {
523  // Get the entry point address for this object
524  lldb_private::Address entry = object.GetEntryPointAddress();
525  // Return the entry point address
526  return entry.GetFileAddress();
527  }
528  // No idea so back out
529  return LLDB_INVALID_ADDRESS;
530 }
531 
533  const ModuleSP module) const {
534  SectionList *sections = nullptr;
535  if (module.get()) {
536  ObjectFile *obj_file = module->GetObjectFile();
537  if (obj_file) {
538  sections = obj_file->GetSectionList();
539  }
540  }
541  return sections;
542 }
543 
544 static int ReadInt(Process *process, addr_t addr) {
545  Status error;
546  int value = (int)process->ReadUnsignedIntegerFromMemory(
547  addr, sizeof(uint32_t), 0, error);
548  if (error.Fail())
549  return -1;
550  else
551  return value;
552 }
553 
556  const lldb::ThreadSP thread,
557  lldb::addr_t tls_file_addr) {
558  auto it = m_loaded_modules.find(module);
559  if (it == m_loaded_modules.end())
560  return LLDB_INVALID_ADDRESS;
561 
562  addr_t link_map = it->second;
563  if (link_map == LLDB_INVALID_ADDRESS)
564  return LLDB_INVALID_ADDRESS;
565 
566  const HexagonDYLDRendezvous::ThreadInfo &metadata =
568  if (!metadata.valid)
569  return LLDB_INVALID_ADDRESS;
570 
571  // Get the thread pointer.
572  addr_t tp = thread->GetThreadPointer();
573  if (tp == LLDB_INVALID_ADDRESS)
574  return LLDB_INVALID_ADDRESS;
575 
576  // Find the module's modid.
577  int modid = ReadInt(m_process, link_map + metadata.modid_offset);
578  if (modid == -1)
579  return LLDB_INVALID_ADDRESS;
580 
581  // Lookup the DTV structure for this thread.
582  addr_t dtv_ptr = tp + metadata.dtv_offset;
583  addr_t dtv = ReadPointer(dtv_ptr);
584  if (dtv == LLDB_INVALID_ADDRESS)
585  return LLDB_INVALID_ADDRESS;
586 
587  // Find the TLS block for this module.
588  addr_t dtv_slot = dtv + metadata.dtv_slot_size * modid;
589  addr_t tls_block = ReadPointer(dtv_slot + metadata.tls_offset);
590 
591  Module *mod = module.get();
593  LLDB_LOGF(log,
594  "DynamicLoaderHexagonDYLD::Performed TLS lookup: "
595  "module=%s, link_map=0x%" PRIx64 ", tp=0x%" PRIx64
596  ", modid=%i, tls_block=0x%" PRIx64,
597  mod->GetObjectName().AsCString(""), link_map, tp, modid, tls_block);
598 
599  if (tls_block == LLDB_INVALID_ADDRESS)
600  return LLDB_INVALID_ADDRESS;
601  else
602  return tls_block + tls_file_addr;
603 }
lldb_private::AddressRange::GetBaseAddress
Address & GetBaseAddress()
Get accessor for the base address of the range.
Definition: AddressRange.h:209
lldb_private::Module::GetObjectFile
virtual ObjectFile * GetObjectFile()
Get the object file representation for the current architecture.
Definition: Module.cpp:1239
DynamicLoaderHexagonDYLD::UnloadSections
void UnloadSections(const lldb::ModuleSP module) override
Removes the loaded sections from the target in module.
Definition: DynamicLoaderHexagonDYLD.cpp:240
HexagonDYLDRendezvous::ThreadInfo::dtv_offset
uint32_t dtv_offset
Definition: HexagonDYLDRendezvous.h:52
LIBLLDB_LOG_DYNAMIC_LOADER
#define LIBLLDB_LOG_DYNAMIC_LOADER
Definition: Logging.h:17
DynamicLoaderHexagonDYLD.h
lldb_private::StoppointCallbackContext
General Outline: When we hit a breakpoint we need to package up whatever information is needed to eva...
Definition: StoppointCallbackContext.h:26
HexagonDYLDRendezvous::GetLinkMapAddress
lldb::addr_t GetLinkMapAddress() const
Definition: HexagonDYLDRendezvous.h:87
lldb_private::Stoppoint::GetID
lldb::break_id_t GetID() const
Definition: Stoppoint.cpp:22
lldb::eSymbolTypeCode
@ eSymbolTypeCode
Definition: lldb-enumerations.h:616
HexagonDYLDRendezvous::iterator
SOEntryList::const_iterator iterator
Definition: HexagonDYLDRendezvous.h:165
ModuleSpec.h
lldb_private::Symbol
Definition: Symbol.h:20
HexagonDYLDRendezvous::ModulesDidUnload
bool ModulesDidUnload() const
Definition: HexagonDYLDRendezvous.h:119
lldb_private::Target::GetOrCreateModule
lldb::ModuleSP GetOrCreateModule(const ModuleSpec &module_spec, bool notify, Status *error_ptr=nullptr)
Find a binary on the system and return its Module, or return an existing Module that is already in th...
Definition: Target.cpp:2038
lldb_private::SymbolContext::GetAddressRange
bool GetAddressRange(uint32_t scope, uint32_t range_idx, bool use_inline_block_range, AddressRange &range) const
Get the address range contained within a symbol context.
Definition: SymbolContext.cpp:379
DynamicLoaderHexagonDYLD::DidLaunch
void DidLaunch() override
Called after launching a process.
Definition: DynamicLoaderHexagonDYLD.cpp:158
lldb_private::Breakpoint::SetBreakpointKind
void SetBreakpointKind(const char *kind)
Set the "kind" description for a breakpoint.
Definition: Breakpoint.h:443
findSymbolAddress
static lldb::addr_t findSymbolAddress(Process *proc, ConstString findName)
Definition: DynamicLoaderHexagonDYLD.cpp:49
lldb_private::SectionList::GetSize
size_t GetSize() const
Definition: Section.h:74
HexagonDYLDRendezvous::ModulesDidLoad
bool ModulesDidLoad() const
Definition: HexagonDYLDRendezvous.h:115
DynamicLoaderHexagonDYLD::~DynamicLoaderHexagonDYLD
~DynamicLoaderHexagonDYLD() override
Definition: DynamicLoaderHexagonDYLD.cpp:106
LLDB_LOGF
#define LLDB_LOGF(log,...)
Definition: Log.h:247
lldb_private::Process
Definition: Process.h:338
lldb_private::Target::GetExecutableModulePointer
Module * GetExecutableModulePointer()
Definition: Target.cpp:1358
lldb_private::Target::GetExecutableModule
lldb::ModuleSP GetExecutableModule()
Gets the module for the main executable.
Definition: Target.cpp:1344
Module.h
BreakpointLocation.h
lldb_private::Process::GetTarget
Target & GetTarget()
Get the target object pointer for this module.
Definition: Process.h:1206
DynamicLoaderHexagonDYLD::GetEntryPoint
lldb::addr_t GetEntryPoint()
Computes a value for m_entry_point returning the computed address on success and LLDB_INVALID_ADDRESS...
Definition: DynamicLoaderHexagonDYLD.cpp:511
HexagonDYLDRendezvous::end
iterator end() const
Definition: HexagonDYLDRendezvous.h:169
lldb_private::Process::SetCanInterpretFunctionCalls
void SetCanInterpretFunctionCalls(bool can_interpret_function_calls)
Sets whether executing function calls using the interpreter is possible for this process.
Definition: Process.h:1866
lldb_private::SymbolContextList
Definition: SymbolContext.h:379
lldb_private::SymbolContextList::GetContextAtIndex
bool GetContextAtIndex(size_t idx, SymbolContext &sc) const
Get accessor for a symbol context at index idx.
Definition: SymbolContext.cpp:1262
lldb_private::Module
Definition: Module.h:85
lldb_private::ConstString::AsCString
const char * AsCString(const char *value_if_empty=nullptr) const
Get the string value as a C string.
Definition: ConstString.h:193
lldb_private::SectionList
Definition: Section.h:34
lldb_private::Target::CreateBreakpoint
lldb::BreakpointSP CreateBreakpoint(const FileSpecList *containingModules, const FileSpec &file, uint32_t line_no, uint32_t column, lldb::addr_t offset, LazyBool check_inlines, LazyBool skip_prologue, bool internal, bool request_hardware, LazyBool move_to_nearest_code)
Definition: Target.cpp:331
lldb_private::ArchSpec::GetTriple
llvm::Triple & GetTriple()
Architecture triple accessor.
Definition: ArchSpec.h:444
lldb::addr_t
uint64_t addr_t
Definition: lldb-types.h:83
lldb_private::Symtab::SymbolAtIndex
Symbol * SymbolAtIndex(size_t idx)
Definition: Symtab.cpp:217
lldb_private::SymbolContext
Definition: SymbolContext.h:33
lldb_private::Target
Definition: Target.h:452
Section.h
DynamicLoaderHexagonDYLD::RendezvousBreakpointHit
static bool RendezvousBreakpointHit(void *baton, lldb_private::StoppointCallbackContext *context, lldb::user_id_t break_id, lldb::user_id_t break_loc_id)
Callback routine which updates the current list of loaded modules based on the information supplied b...
Definition: DynamicLoaderHexagonDYLD.cpp:304
lldb_private::Target::GetImages
const ModuleList & GetImages() const
Get accessor for the images for this process.
Definition: Target.h:926
DynamicLoaderHexagonDYLD::CreateInstance
static lldb_private::DynamicLoader * CreateInstance(lldb_private::Process *process, bool force)
Definition: DynamicLoaderHexagonDYLD.cpp:86
Process.h
HexagonDYLDRendezvous::ThreadInfo::valid
bool valid
Definition: HexagonDYLDRendezvous.h:51
lldb_private::ModuleList::FindSymbolsWithNameAndType
void FindSymbolsWithNameAndType(ConstString name, lldb::SymbolType symbol_type, SymbolContextList &sc_list) const
Definition: ModuleList.cpp:499
Target.h
lldb_private::ObjectFile::GetSymtab
Symtab * GetSymtab()
Gets the symbol table for the currently selected architecture (and object for archives).
Definition: ObjectFile.cpp:724
lldb_private::Thread::GetProcess
lldb::ProcessSP GetProcess() const
Definition: Thread.h:152
lldb_private::FileSpec
Definition: FileSpec.h:56
error
static llvm::raw_ostream & error(Stream &strm)
Definition: CommandReturnObject.cpp:17
lldb_private::SymbolContext::symbol
Symbol * symbol
The Symbol for a given query.
Definition: SymbolContext.h:323
lldb_private::ObjectFile::GetSectionList
virtual SectionList * GetSectionList(bool update_module_section_list=true)
Gets the section list for the currently selected architecture (and object for archives).
Definition: ObjectFile.cpp:587
DynamicLoaderHexagonDYLD::LoadAllCurrentModules
void LoadAllCurrentModules()
Helper for the entry breakpoint callback.
Definition: DynamicLoaderHexagonDYLD.cpp:454
DynamicLoaderHexagonDYLD
Definition: DynamicLoaderHexagonDYLD.h:17
lldb_private::ModuleList::Remove
bool Remove(const lldb::ModuleSP &module_sp, bool notify=true)
Remove a module from the module list.
lldb_private::ModuleList
Definition: ModuleList.h:79
HexagonDYLDRendezvous::ThreadInfo::tls_offset
uint32_t tls_offset
Definition: HexagonDYLDRendezvous.h:55
Log.h
lldb_private::eLoadDependentsNo
@ eLoadDependentsNo
Definition: Target.h:65
HexagonDYLDRendezvous::IsValid
bool IsValid()
Definition: HexagonDYLDRendezvous.cpp:107
DynamicLoaderHexagonDYLD::RefreshModules
void RefreshModules()
Helper method for RendezvousBreakpointHit.
Definition: DynamicLoaderHexagonDYLD.cpp:339
lldb_private::Target::SetSectionLoadAddress
bool SetSectionLoadAddress(const lldb::SectionSP &section, lldb::addr_t load_addr, bool warn_multiple=false)
Definition: Target.cpp:2892
lldb_private::Thread
Definition: Thread.h:60
Compare
static bool Compare(BreakpointLocationSP lhs, lldb::break_id_t val)
Definition: BreakpointLocationList.cpp:64
DynamicLoaderHexagonDYLD::DidAttach
void DidAttach() override
Called after attaching a process.
Definition: DynamicLoaderHexagonDYLD.cpp:113
DynamicLoaderHexagonDYLD::ComputeLoadOffset
lldb::addr_t ComputeLoadOffset()
Computes a value for m_load_offset returning the computed address on success and LLDB_INVALID_ADDRESS...
Definition: DynamicLoaderHexagonDYLD.cpp:494
lldb_private::Address::GetFileAddress
lldb::addr_t GetFileAddress() const
Get the file address.
Definition: Address.cpp:290
DynamicLoaderHexagonDYLD::DynamicLoaderHexagonDYLD
DynamicLoaderHexagonDYLD(lldb_private::Process *process)
Definition: DynamicLoaderHexagonDYLD.cpp:101
ReadInt
static int ReadInt(Process *process, addr_t addr)
Definition: DynamicLoaderHexagonDYLD.cpp:544
HexagonDYLDRendezvous::Resolve
bool Resolve()
Update the internal snapshot of runtime linker rendezvous and recompute the currently loaded modules.
Definition: HexagonDYLDRendezvous.cpp:61
HexagonDYLDRendezvous::ThreadInfo
Definition: HexagonDYLDRendezvous.h:50
HexagonDYLDRendezvous::loaded_end
iterator loaded_end() const
Definition: HexagonDYLDRendezvous.h:174
lldb_private::DynamicLoader::ReadPointer
lldb::addr_t ReadPointer(lldb::addr_t addr)
Definition: DynamicLoader.cpp:227
lldb_private::SymbolContextList::GetSize
uint32_t GetSize() const
Get accessor for a symbol context list size.
Definition: SymbolContext.cpp:1278
lldb_private::ConstString
Definition: ConstString.h:40
DynamicLoaderHexagonDYLD::GetPluginDescriptionStatic
static llvm::StringRef GetPluginDescriptionStatic()
Definition: DynamicLoaderHexagonDYLD.cpp:81
HexagonDYLDRendezvous::loaded_begin
iterator loaded_begin() const
Iterators over all modules loaded into the inferior since the last call to Resolve().
Definition: HexagonDYLDRendezvous.h:173
lldb_private::AddressRange
Definition: AddressRange.h:25
lldb_private::ModuleList::FindFirstModule
lldb::ModuleSP FindFirstModule(const ModuleSpec &module_spec) const
Definition: ModuleList.cpp:613
HexagonDYLDRendezvous::ThreadInfo::dtv_slot_size
uint32_t dtv_slot_size
Definition: HexagonDYLDRendezvous.h:53
HexagonDYLDRendezvous::SetBreakAddress
void SetBreakAddress(lldb::addr_t addr)
In hexagon it is possible that we can know the dyld breakpoint without having to find it from the ren...
Definition: HexagonDYLDRendezvous.h:101
DynamicLoaderHexagonDYLD::m_entry_point
lldb::addr_t m_entry_point
Virtual entry address of the inferior process.
Definition: DynamicLoaderHexagonDYLD.h:60
lldb_private::SectionList::GetSectionAtIndex
lldb::SectionSP GetSectionAtIndex(size_t idx) const
Definition: Section.cpp:546
lldb_private::Module::GetObjectName
ConstString GetObjectName() const
Definition: Module.cpp:1237
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
ThreadPlanRunToAddress.h
DynamicLoaderHexagonDYLD::m_loaded_modules
std::map< lldb::ModuleWP, lldb::addr_t, std::owner_less< lldb::ModuleWP > > m_loaded_modules
Loaded module list. (link map for each module)
Definition: DynamicLoaderHexagonDYLD.h:67
Thread.h
HexagonDYLDRendezvous::GetThreadInfo
const ThreadInfo & GetThreadInfo()
Definition: HexagonDYLDRendezvous.cpp:316
lldb_private::Symbol::GetMangled
Mangled & GetMangled()
Definition: Symbol.h:121
DynamicLoaderHexagonDYLD::CanLoadImage
lldb_private::Status CanLoadImage() override
Ask if it is ok to try and load or unload an shared library (image).
Definition: DynamicLoaderHexagonDYLD.cpp:204
DynamicLoaderHexagonDYLD::GetThreadLocalData
lldb::addr_t GetThreadLocalData(const lldb::ModuleSP module, const lldb::ThreadSP thread, lldb::addr_t tls_file_addr) override
Retrieves the per-module TLS block for a given thread.
Definition: DynamicLoaderHexagonDYLD.cpp:555
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:1393
LLDB_INVALID_BREAK_ID
#define LLDB_INVALID_BREAK_ID
Definition: lldb-defines.h:37
lldb_private::Symtab::GetNumSymbols
size_t GetNumSymbols() const
Definition: Symtab.cpp:77
lldb_private::Symbol::GetName
ConstString GetName() const
Definition: Symbol.cpp:502
DynamicLoaderHexagonDYLD::Terminate
static void Terminate()
Definition: DynamicLoaderHexagonDYLD.cpp:79
HexagonDYLDRendezvous::begin
iterator begin() const
Iterators over all currently loaded modules.
Definition: HexagonDYLDRendezvous.h:168
lldb_private::ModuleSpec
Definition: ModuleSpec.h:26
lldb_private::Target::GetArchitecture
const ArchSpec & GetArchitecture() const
Definition: Target.h:968
lldb_private::Target::SetSectionUnloaded
bool SetSectionUnloaded(const lldb::SectionSP &section_sp)
Definition: Target.cpp:2941
lldb_private::Status
Definition: Status.h:44
lldb_private::Symtab
Definition: Symtab.h:22
uint32_t
DynamicLoaderHexagonDYLD::GetStepThroughTrampolinePlan
lldb::ThreadPlanSP GetStepThroughTrampolinePlan(lldb_private::Thread &thread, bool stop_others) override
Provides a plan to step through the dynamic loader trampoline for the current state of thread.
Definition: DynamicLoaderHexagonDYLD.cpp:401
DynamicLoaderHexagonDYLD::SetRendezvousBreakpoint
bool SetRendezvousBreakpoint()
Enables a breakpoint on a function called by the runtime linker each time a module is loaded or unloa...
Definition: DynamicLoaderHexagonDYLD.cpp:256
lldb_private::Address
Definition: Address.h:59
lldb_private::Target::ModulesDidLoad
void ModulesDidLoad(ModuleList &module_list)
Definition: Target.cpp:1610
lldb_private::DynamicLoader::LoadModuleAtAddress
virtual lldb::ModuleSP LoadModuleAtAddress(const lldb_private::FileSpec &file, lldb::addr_t link_map_addr, lldb::addr_t base_addr, bool base_addr_is_offset)
Locates or creates a module given by file and updates/loads the resulting module at the virtual base ...
Definition: DynamicLoader.cpp:148
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::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::Address::GetLoadAddress
lldb::addr_t GetLoadAddress(Target *target) const
Get the load address.
Definition: Address.cpp:310
lldb_private::DynamicLoader::GetStopWhenImagesChange
bool GetStopWhenImagesChange() const
Get whether the process should stop when images change.
Definition: DynamicLoader.cpp:64
PluginManager.h
lldb_private::Target::RemoveBreakpointByID
bool RemoveBreakpointByID(lldb::break_id_t break_id)
Definition: Target.cpp:930
LLDB_INVALID_ADDRESS
#define LLDB_INVALID_ADDRESS
Definition: lldb-defines.h:74
HexagonDYLDRendezvous::ThreadInfo::modid_offset
uint32_t modid_offset
Definition: HexagonDYLDRendezvous.h:54
DynamicLoaderHexagonDYLD::Initialize
static void Initialize()
Definition: DynamicLoaderHexagonDYLD.cpp:74
DynamicLoaderHexagonDYLD::m_rendezvous
HexagonDYLDRendezvous m_rendezvous
Runtime linker rendezvous structure.
Definition: DynamicLoaderHexagonDYLD.h:54
HexagonDYLDRendezvous::unloaded_begin
iterator unloaded_begin() const
Iterators over all modules unloaded from the inferior since the last call to Resolve().
Definition: HexagonDYLDRendezvous.h:178
lldb::user_id_t
uint64_t user_id_t
Definition: lldb-types.h:84
lldb_private
A class that represents a running process on the host machine.
Definition: SBCommandInterpreterRunOptions.h:16
lldb_private::Symbol::IsTrampoline
bool IsTrampoline() const
Definition: Symbol.cpp:175
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:2060
LLDB_PLUGIN_DEFINE
#define LLDB_PLUGIN_DEFINE(PluginName)
Definition: PluginManager.h:31
lldb_private::Log
Definition: Log.h:49
DynamicLoaderHexagonDYLD::GetSectionListFromModule
const lldb_private::SectionList * GetSectionListFromModule(const lldb::ModuleSP module) const
Definition: DynamicLoaderHexagonDYLD.cpp:532
HexagonDYLDRendezvous::unloaded_end
iterator unloaded_end() const
Definition: HexagonDYLDRendezvous.h:179
lldb_private::Target::GetBreakpointByID
lldb::BreakpointSP GetBreakpointByID(lldb::break_id_t break_id)
Definition: Target.cpp:303
lldb_private::Thread::GetStackFrameAtIndex
virtual lldb::StackFrameSP GetStackFrameAtIndex(uint32_t idx)
Definition: Thread.h:397
lldb_private::Target::ModulesDidUnload
void ModulesDidUnload(ModuleList &module_list, bool delete_locations)
Definition: Target.cpp:1642
lldb_private::GetLogIfAnyCategoriesSet
Log * GetLogIfAnyCategoriesSet(uint32_t mask)
Definition: Logging.cpp:62
HexagonDYLDRendezvous::SetRendezvousAddress
void SetRendezvousAddress(lldb::addr_t)
Provide the dyld structure address.
Definition: HexagonDYLDRendezvous.cpp:103
lldb_private::Process::SetCanJIT
void SetCanJIT(bool can_jit)
Sets whether executing JIT-compiled code in this process is possible.
Definition: Process.cpp:2319
DynamicLoaderHexagonDYLD::m_dyld_bid
lldb::break_id_t m_dyld_bid
Rendezvous breakpoint.
Definition: DynamicLoaderHexagonDYLD.h:63
lldb_private::StackFrame
Definition: StackFrame.h:40
DynamicLoaderHexagonDYLD::GetTargetExecutable
lldb::ModuleSP GetTargetExecutable()
Checks to see if the target module has changed, updates the target accordingly and returns the target...
Definition: DynamicLoaderHexagonDYLD.cpp:162
lldb
Definition: SBAddress.h:15
lldb_private::StackFrame::GetSymbolContext
const SymbolContext & GetSymbolContext(lldb::SymbolContextItem resolve_scope)
Provide a SymbolContext for this StackFrame's current pc value.
Definition: StackFrame.cpp:298
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.
DynamicLoaderHexagonDYLD::UpdateLoadedSections
void UpdateLoadedSections(lldb::ModuleSP module, lldb::addr_t link_map_addr, lldb::addr_t base_addr, bool base_addr_is_offset) override
Updates the load address of every allocatable section in module.
Definition: DynamicLoaderHexagonDYLD.cpp:206
lldb_private::Breakpoint
General Outline: A breakpoint has four main parts, a filter, a resolver, the list of breakpoint locat...
Definition: Breakpoint.h:80
lldb_private::Symbol::GetAddress
Address GetAddress() const
Definition: Symbol.h:73