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IRExecutionUnit.cpp
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1 //===-- IRExecutionUnit.cpp -------------------------------------*- C++ -*-===//
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 
9 #include "llvm/ExecutionEngine/ExecutionEngine.h"
10 #include "llvm/ExecutionEngine/ObjectCache.h"
11 #include "llvm/IR/Constants.h"
12 #include "llvm/IR/LLVMContext.h"
13 #include "llvm/IR/Module.h"
14 #include "llvm/Support/SourceMgr.h"
15 #include "llvm/Support/raw_ostream.h"
16 
17 #include "lldb/Core/Debugger.h"
18 #include "lldb/Core/Disassembler.h"
19 #include "lldb/Core/Module.h"
20 #include "lldb/Core/Section.h"
24 #include "lldb/Symbol/SymbolFile.h"
28 #include "lldb/Target/Target.h"
32 #include "lldb/Utility/Log.h"
33 
34 #include "lldb/../../source/Plugins/Language/CPlusPlus/CPlusPlusLanguage.h"
35 #include "lldb/../../source/Plugins/ObjectFile/JIT/ObjectFileJIT.h"
36 
37 using namespace lldb_private;
38 
39 IRExecutionUnit::IRExecutionUnit(std::unique_ptr<llvm::LLVMContext> &context_up,
40  std::unique_ptr<llvm::Module> &module_up,
41  ConstString &name,
42  const lldb::TargetSP &target_sp,
43  const SymbolContext &sym_ctx,
44  std::vector<std::string> &cpu_features)
45  : IRMemoryMap(target_sp), m_context_up(context_up.release()),
46  m_module_up(module_up.release()), m_module(m_module_up.get()),
47  m_cpu_features(cpu_features), m_name(name), m_sym_ctx(sym_ctx),
48  m_did_jit(false), m_function_load_addr(LLDB_INVALID_ADDRESS),
49  m_function_end_load_addr(LLDB_INVALID_ADDRESS),
50  m_reported_allocations(false) {}
51 
52 lldb::addr_t IRExecutionUnit::WriteNow(const uint8_t *bytes, size_t size,
53  Status &error) {
54  const bool zero_memory = false;
55  lldb::addr_t allocation_process_addr =
56  Malloc(size, 8, lldb::ePermissionsWritable | lldb::ePermissionsReadable,
57  eAllocationPolicyMirror, zero_memory, error);
58 
59  if (!error.Success())
60  return LLDB_INVALID_ADDRESS;
61 
62  WriteMemory(allocation_process_addr, bytes, size, error);
63 
64  if (!error.Success()) {
65  Status err;
66  Free(allocation_process_addr, err);
67 
68  return LLDB_INVALID_ADDRESS;
69  }
70 
71  if (Log *log =
73  DataBufferHeap my_buffer(size, 0);
74  Status err;
75  ReadMemory(my_buffer.GetBytes(), allocation_process_addr, size, err);
76 
77  if (err.Success()) {
78  DataExtractor my_extractor(my_buffer.GetBytes(), my_buffer.GetByteSize(),
80  my_extractor.PutToLog(log, 0, my_buffer.GetByteSize(),
81  allocation_process_addr, 16,
83  }
84  }
85 
86  return allocation_process_addr;
87 }
88 
90  if (allocation == LLDB_INVALID_ADDRESS)
91  return;
92 
93  Status err;
94 
95  Free(allocation, err);
96 }
97 
98 Status IRExecutionUnit::DisassembleFunction(Stream &stream,
99  lldb::ProcessSP &process_wp) {
101 
102  ExecutionContext exe_ctx(process_wp);
103 
104  Status ret;
105 
106  ret.Clear();
107 
108  lldb::addr_t func_local_addr = LLDB_INVALID_ADDRESS;
109  lldb::addr_t func_remote_addr = LLDB_INVALID_ADDRESS;
110 
111  for (JittedFunction &function : m_jitted_functions) {
112  if (function.m_name == m_name) {
113  func_local_addr = function.m_local_addr;
114  func_remote_addr = function.m_remote_addr;
115  }
116  }
117 
118  if (func_local_addr == LLDB_INVALID_ADDRESS) {
120  ret.SetErrorStringWithFormat("Couldn't find function %s for disassembly",
121  m_name.AsCString());
122  return ret;
123  }
124 
125  if (log)
126  log->Printf("Found function, has local address 0x%" PRIx64
127  " and remote address 0x%" PRIx64,
128  (uint64_t)func_local_addr, (uint64_t)func_remote_addr);
129 
130  std::pair<lldb::addr_t, lldb::addr_t> func_range;
131 
132  func_range = GetRemoteRangeForLocal(func_local_addr);
133 
134  if (func_range.first == 0 && func_range.second == 0) {
136  ret.SetErrorStringWithFormat("Couldn't find code range for function %s",
137  m_name.AsCString());
138  return ret;
139  }
140 
141  if (log)
142  log->Printf("Function's code range is [0x%" PRIx64 "+0x%" PRIx64 "]",
143  func_range.first, func_range.second);
144 
145  Target *target = exe_ctx.GetTargetPtr();
146  if (!target) {
148  ret.SetErrorString("Couldn't find the target");
149  return ret;
150  }
151 
152  lldb::DataBufferSP buffer_sp(new DataBufferHeap(func_range.second, 0));
153 
154  Process *process = exe_ctx.GetProcessPtr();
155  Status err;
156  process->ReadMemory(func_remote_addr, buffer_sp->GetBytes(),
157  buffer_sp->GetByteSize(), err);
158 
159  if (!err.Success()) {
161  ret.SetErrorStringWithFormat("Couldn't read from process: %s",
162  err.AsCString("unknown error"));
163  return ret;
164  }
165 
166  ArchSpec arch(target->GetArchitecture());
167 
168  const char *plugin_name = NULL;
169  const char *flavor_string = NULL;
170  lldb::DisassemblerSP disassembler_sp =
171  Disassembler::FindPlugin(arch, flavor_string, plugin_name);
172 
173  if (!disassembler_sp) {
176  "Unable to find disassembler plug-in for %s architecture.",
177  arch.GetArchitectureName());
178  return ret;
179  }
180 
181  if (!process) {
183  ret.SetErrorString("Couldn't find the process");
184  return ret;
185  }
186 
187  DataExtractor extractor(buffer_sp, process->GetByteOrder(),
188  target->GetArchitecture().GetAddressByteSize());
189 
190  if (log) {
191  log->Printf("Function data has contents:");
192  extractor.PutToLog(log, 0, extractor.GetByteSize(), func_remote_addr, 16,
194  }
195 
196  disassembler_sp->DecodeInstructions(Address(func_remote_addr), extractor, 0,
197  UINT32_MAX, false, false);
198 
199  InstructionList &instruction_list = disassembler_sp->GetInstructionList();
200  instruction_list.Dump(&stream, true, true, &exe_ctx);
201  return ret;
202 }
203 
204 static void ReportInlineAsmError(const llvm::SMDiagnostic &diagnostic,
205  void *Context, unsigned LocCookie) {
206  Status *err = static_cast<Status *>(Context);
207 
208  if (err && err->Success()) {
209  err->SetErrorToGenericError();
210  err->SetErrorStringWithFormat("Inline assembly error: %s",
211  diagnostic.getMessage().str().c_str());
212  }
213 }
214 
215 void IRExecutionUnit::ReportSymbolLookupError(ConstString name) {
216  m_failed_lookups.push_back(name);
217 }
218 
220  lldb::addr_t &func_end) {
221  lldb::ProcessSP process_sp(GetProcessWP().lock());
222 
223  static std::recursive_mutex s_runnable_info_mutex;
224 
225  func_addr = LLDB_INVALID_ADDRESS;
226  func_end = LLDB_INVALID_ADDRESS;
227 
228  if (!process_sp) {
229  error.SetErrorToGenericError();
230  error.SetErrorString("Couldn't write the JIT compiled code into the "
231  "process because the process is invalid");
232  return;
233  }
234 
235  if (m_did_jit) {
236  func_addr = m_function_load_addr;
237  func_end = m_function_end_load_addr;
238 
239  return;
240  };
241 
242  std::lock_guard<std::recursive_mutex> guard(s_runnable_info_mutex);
243 
244  m_did_jit = true;
245 
247 
248  std::string error_string;
249 
250  if (log) {
251  std::string s;
252  llvm::raw_string_ostream oss(s);
253 
254  m_module->print(oss, NULL);
255 
256  oss.flush();
257 
258  log->Printf("Module being sent to JIT: \n%s", s.c_str());
259  }
260 
261  llvm::Triple triple(m_module->getTargetTriple());
262  llvm::Reloc::Model relocModel;
263 
264  if (triple.isOSBinFormatELF()) {
265  relocModel = llvm::Reloc::Static;
266  } else {
267  relocModel = llvm::Reloc::PIC_;
268  }
269 
270  m_module_up->getContext().setInlineAsmDiagnosticHandler(ReportInlineAsmError,
271  &error);
272 
273  llvm::EngineBuilder builder(std::move(m_module_up));
274 
275  builder.setEngineKind(llvm::EngineKind::JIT)
276  .setErrorStr(&error_string)
277  .setRelocationModel(relocModel)
278  .setMCJITMemoryManager(
279  std::unique_ptr<MemoryManager>(new MemoryManager(*this)))
280  .setOptLevel(llvm::CodeGenOpt::Less);
281 
282  llvm::StringRef mArch;
283  llvm::StringRef mCPU;
284  llvm::SmallVector<std::string, 0> mAttrs;
285 
286  for (std::string &feature : m_cpu_features)
287  mAttrs.push_back(feature);
288 
289  llvm::TargetMachine *target_machine =
290  builder.selectTarget(triple, mArch, mCPU, mAttrs);
291 
292  m_execution_engine_up.reset(builder.create(target_machine));
293 
294  m_strip_underscore =
295  (m_execution_engine_up->getDataLayout().getGlobalPrefix() == '_');
296 
297  if (!m_execution_engine_up) {
298  error.SetErrorToGenericError();
299  error.SetErrorStringWithFormat("Couldn't JIT the function: %s",
300  error_string.c_str());
301  return;
302  }
303 
304  class ObjectDumper : public llvm::ObjectCache {
305  public:
306  void notifyObjectCompiled(const llvm::Module *module,
307  llvm::MemoryBufferRef object) override {
308  int fd = 0;
309  llvm::SmallVector<char, 256> result_path;
310  std::string object_name_model =
311  "jit-object-" + module->getModuleIdentifier() + "-%%%.o";
312  (void)llvm::sys::fs::createUniqueFile(object_name_model, fd, result_path);
313  llvm::raw_fd_ostream fds(fd, true);
314  fds.write(object.getBufferStart(), object.getBufferSize());
315  }
316 
317  std::unique_ptr<llvm::MemoryBuffer>
318  getObject(const llvm::Module *module) override {
319  // Return nothing - we're just abusing the object-cache mechanism to dump
320  // objects.
321  return nullptr;
322  }
323  };
324 
325  if (process_sp->GetTarget().GetEnableSaveObjects()) {
326  m_object_cache_up = llvm::make_unique<ObjectDumper>();
327  m_execution_engine_up->setObjectCache(m_object_cache_up.get());
328  }
329 
330  // Make sure we see all sections, including ones that don't have
331  // relocations...
332  m_execution_engine_up->setProcessAllSections(true);
333 
334  m_execution_engine_up->DisableLazyCompilation();
335 
336  for (llvm::Function &function : *m_module) {
337  if (function.isDeclaration() || function.hasPrivateLinkage())
338  continue;
339 
340  const bool external =
341  function.hasExternalLinkage() || function.hasLinkOnceODRLinkage();
342 
343  void *fun_ptr = m_execution_engine_up->getPointerToFunction(&function);
344 
345  if (!error.Success()) {
346  // We got an error through our callback!
347  return;
348  }
349 
350  if (!fun_ptr) {
351  error.SetErrorToGenericError();
353  "'%s' was in the JITted module but wasn't lowered",
354  function.getName().str().c_str());
355  return;
356  }
357  m_jitted_functions.push_back(JittedFunction(
358  function.getName().str().c_str(), external, (lldb::addr_t)fun_ptr));
359  }
360 
361  CommitAllocations(process_sp);
362  ReportAllocations(*m_execution_engine_up);
363 
364  // We have to do this after calling ReportAllocations because for the MCJIT,
365  // getGlobalValueAddress will cause the JIT to perform all relocations. That
366  // can only be done once, and has to happen after we do the remapping from
367  // local -> remote. That means we don't know the local address of the
368  // Variables, but we don't need that for anything, so that's okay.
369 
370  std::function<void(llvm::GlobalValue &)> RegisterOneValue = [this](
371  llvm::GlobalValue &val) {
372  if (val.hasExternalLinkage() && !val.isDeclaration()) {
373  uint64_t var_ptr_addr =
374  m_execution_engine_up->getGlobalValueAddress(val.getName().str());
375 
376  lldb::addr_t remote_addr = GetRemoteAddressForLocal(var_ptr_addr);
377 
378  // This is a really unfortunae API that sometimes returns local addresses
379  // and sometimes returns remote addresses, based on whether the variable
380  // was relocated during ReportAllocations or not.
381 
382  if (remote_addr == LLDB_INVALID_ADDRESS) {
383  remote_addr = var_ptr_addr;
384  }
385 
386  if (var_ptr_addr != 0)
387  m_jitted_global_variables.push_back(JittedGlobalVariable(
388  val.getName().str().c_str(), LLDB_INVALID_ADDRESS, remote_addr));
389  }
390  };
391 
392  for (llvm::GlobalVariable &global_var : m_module->getGlobalList()) {
393  RegisterOneValue(global_var);
394  }
395 
396  for (llvm::GlobalAlias &global_alias : m_module->getAliasList()) {
397  RegisterOneValue(global_alias);
398  }
399 
400  WriteData(process_sp);
401 
402  if (m_failed_lookups.size()) {
403  StreamString ss;
404 
405  ss.PutCString("Couldn't lookup symbols:\n");
406 
407  bool emitNewLine = false;
408 
409  for (ConstString failed_lookup : m_failed_lookups) {
410  if (emitNewLine)
411  ss.PutCString("\n");
412  emitNewLine = true;
413  ss.PutCString(" ");
414  ss.PutCString(Mangled(failed_lookup)
415  .GetDemangledName(lldb::eLanguageTypeObjC_plus_plus)
416  .AsCString());
417  }
418 
419  m_failed_lookups.clear();
420 
421  error.SetErrorString(ss.GetString());
422 
423  return;
424  }
425 
426  m_function_load_addr = LLDB_INVALID_ADDRESS;
427  m_function_end_load_addr = LLDB_INVALID_ADDRESS;
428 
429  for (JittedFunction &jitted_function : m_jitted_functions) {
430  jitted_function.m_remote_addr =
431  GetRemoteAddressForLocal(jitted_function.m_local_addr);
432 
433  if (!m_name.IsEmpty() && jitted_function.m_name == m_name) {
434  AddrRange func_range =
435  GetRemoteRangeForLocal(jitted_function.m_local_addr);
436  m_function_end_load_addr = func_range.first + func_range.second;
437  m_function_load_addr = jitted_function.m_remote_addr;
438  }
439  }
440 
441  if (log) {
442  log->Printf("Code can be run in the target.");
443 
444  StreamString disassembly_stream;
445 
446  Status err = DisassembleFunction(disassembly_stream, process_sp);
447 
448  if (!err.Success()) {
449  log->Printf("Couldn't disassemble function : %s",
450  err.AsCString("unknown error"));
451  } else {
452  log->Printf("Function disassembly:\n%s", disassembly_stream.GetData());
453  }
454 
455  log->Printf("Sections: ");
456  for (AllocationRecord &record : m_records) {
457  if (record.m_process_address != LLDB_INVALID_ADDRESS) {
458  record.dump(log);
459 
460  DataBufferHeap my_buffer(record.m_size, 0);
461  Status err;
462  ReadMemory(my_buffer.GetBytes(), record.m_process_address,
463  record.m_size, err);
464 
465  if (err.Success()) {
466  DataExtractor my_extractor(my_buffer.GetBytes(),
467  my_buffer.GetByteSize(),
469  my_extractor.PutToLog(log, 0, my_buffer.GetByteSize(),
470  record.m_process_address, 16,
472  }
473  } else {
474  record.dump(log);
475 
476  DataExtractor my_extractor((const void *)record.m_host_address,
477  record.m_size, lldb::eByteOrderBig, 8);
478  my_extractor.PutToLog(log, 0, record.m_size, record.m_host_address, 16,
480  }
481  }
482  }
483 
484  func_addr = m_function_load_addr;
485  func_end = m_function_end_load_addr;
486 
487  return;
488 }
489 
491  m_module_up.reset();
492  m_execution_engine_up.reset();
493  m_context_up.reset();
494 }
495 
496 IRExecutionUnit::MemoryManager::MemoryManager(IRExecutionUnit &parent)
497  : m_default_mm_up(new llvm::SectionMemoryManager()), m_parent(parent) {}
498 
499 IRExecutionUnit::MemoryManager::~MemoryManager() {}
500 
501 lldb::SectionType IRExecutionUnit::GetSectionTypeFromSectionName(
502  const llvm::StringRef &name, IRExecutionUnit::AllocationKind alloc_kind) {
504  switch (alloc_kind) {
505  case AllocationKind::Stub:
506  sect_type = lldb::eSectionTypeCode;
507  break;
508  case AllocationKind::Code:
509  sect_type = lldb::eSectionTypeCode;
510  break;
511  case AllocationKind::Data:
512  sect_type = lldb::eSectionTypeData;
513  break;
514  case AllocationKind::Global:
515  sect_type = lldb::eSectionTypeData;
516  break;
517  case AllocationKind::Bytes:
518  sect_type = lldb::eSectionTypeOther;
519  break;
520  }
521 
522  if (!name.empty()) {
523  if (name.equals("__text") || name.equals(".text"))
524  sect_type = lldb::eSectionTypeCode;
525  else if (name.equals("__data") || name.equals(".data"))
526  sect_type = lldb::eSectionTypeCode;
527  else if (name.startswith("__debug_") || name.startswith(".debug_")) {
528  const uint32_t name_idx = name[0] == '_' ? 8 : 7;
529  llvm::StringRef dwarf_name(name.substr(name_idx));
530  switch (dwarf_name[0]) {
531  case 'a':
532  if (dwarf_name.equals("abbrev"))
534  else if (dwarf_name.equals("aranges"))
536  else if (dwarf_name.equals("addr"))
538  break;
539 
540  case 'f':
541  if (dwarf_name.equals("frame"))
543  break;
544 
545  case 'i':
546  if (dwarf_name.equals("info"))
548  break;
549 
550  case 'l':
551  if (dwarf_name.equals("line"))
553  else if (dwarf_name.equals("loc"))
555  else if (dwarf_name.equals("loclists"))
557  break;
558 
559  case 'm':
560  if (dwarf_name.equals("macinfo"))
562  break;
563 
564  case 'p':
565  if (dwarf_name.equals("pubnames"))
567  else if (dwarf_name.equals("pubtypes"))
569  break;
570 
571  case 's':
572  if (dwarf_name.equals("str"))
574  else if (dwarf_name.equals("str_offsets"))
576  break;
577 
578  case 'r':
579  if (dwarf_name.equals("ranges"))
581  break;
582 
583  default:
584  break;
585  }
586  } else if (name.startswith("__apple_") || name.startswith(".apple_"))
587  sect_type = lldb::eSectionTypeInvalid;
588  else if (name.equals("__objc_imageinfo"))
589  sect_type = lldb::eSectionTypeOther;
590  }
591  return sect_type;
592 }
593 
594 uint8_t *IRExecutionUnit::MemoryManager::allocateCodeSection(
595  uintptr_t Size, unsigned Alignment, unsigned SectionID,
596  llvm::StringRef SectionName) {
598 
599  uint8_t *return_value = m_default_mm_up->allocateCodeSection(
600  Size, Alignment, SectionID, SectionName);
601 
602  m_parent.m_records.push_back(AllocationRecord(
603  (uintptr_t)return_value,
604  lldb::ePermissionsReadable | lldb::ePermissionsExecutable,
605  GetSectionTypeFromSectionName(SectionName, AllocationKind::Code), Size,
606  Alignment, SectionID, SectionName.str().c_str()));
607 
608  if (log) {
609  log->Printf("IRExecutionUnit::allocateCodeSection(Size=0x%" PRIx64
610  ", Alignment=%u, SectionID=%u) = %p",
611  (uint64_t)Size, Alignment, SectionID, (void *)return_value);
612  }
613 
614  if (m_parent.m_reported_allocations) {
615  Status err;
616  lldb::ProcessSP process_sp =
617  m_parent.GetBestExecutionContextScope()->CalculateProcess();
618 
619  m_parent.CommitOneAllocation(process_sp, err, m_parent.m_records.back());
620  }
621 
622  return return_value;
623 }
624 
625 uint8_t *IRExecutionUnit::MemoryManager::allocateDataSection(
626  uintptr_t Size, unsigned Alignment, unsigned SectionID,
627  llvm::StringRef SectionName, bool IsReadOnly) {
629 
630  uint8_t *return_value = m_default_mm_up->allocateDataSection(
631  Size, Alignment, SectionID, SectionName, IsReadOnly);
632 
633  uint32_t permissions = lldb::ePermissionsReadable;
634  if (!IsReadOnly)
635  permissions |= lldb::ePermissionsWritable;
636  m_parent.m_records.push_back(AllocationRecord(
637  (uintptr_t)return_value, permissions,
638  GetSectionTypeFromSectionName(SectionName, AllocationKind::Data), Size,
639  Alignment, SectionID, SectionName.str().c_str()));
640  if (log) {
641  log->Printf("IRExecutionUnit::allocateDataSection(Size=0x%" PRIx64
642  ", Alignment=%u, SectionID=%u) = %p",
643  (uint64_t)Size, Alignment, SectionID, (void *)return_value);
644  }
645 
646  if (m_parent.m_reported_allocations) {
647  Status err;
648  lldb::ProcessSP process_sp =
649  m_parent.GetBestExecutionContextScope()->CalculateProcess();
650 
651  m_parent.CommitOneAllocation(process_sp, err, m_parent.m_records.back());
652  }
653 
654  return return_value;
655 }
656 
657 static ConstString
659  const lldb::LanguageType &lang_type,
660  const SymbolContext &sym_ctx) {
661  CPlusPlusLanguage::MethodName cpp_name(demangled);
662  std::string scope_qualified_name = cpp_name.GetScopeQualifiedName();
663 
664  if (!scope_qualified_name.size())
665  return ConstString();
666 
667  if (!sym_ctx.module_sp)
668  return ConstString();
669 
670  SymbolVendor *sym_vendor = sym_ctx.module_sp->GetSymbolVendor();
671  if (!sym_vendor)
672  return ConstString();
673 
674  lldb_private::SymbolFile *sym_file = sym_vendor->GetSymbolFile();
675  if (!sym_file)
676  return ConstString();
677 
678  std::vector<ConstString> alternates;
679  sym_file->GetMangledNamesForFunction(scope_qualified_name, alternates);
680 
681  std::vector<ConstString> param_and_qual_matches;
682  std::vector<ConstString> param_matches;
683  for (size_t i = 0; i < alternates.size(); i++) {
684  ConstString alternate_mangled_name = alternates[i];
685  Mangled mangled(alternate_mangled_name, true);
686  ConstString demangled = mangled.GetDemangledName(lang_type);
687 
688  CPlusPlusLanguage::MethodName alternate_cpp_name(demangled);
689  if (!cpp_name.IsValid())
690  continue;
691 
692  if (alternate_cpp_name.GetArguments() == cpp_name.GetArguments()) {
693  if (alternate_cpp_name.GetQualifiers() == cpp_name.GetQualifiers())
694  param_and_qual_matches.push_back(alternate_mangled_name);
695  else
696  param_matches.push_back(alternate_mangled_name);
697  }
698  }
699 
700  if (param_and_qual_matches.size())
701  return param_and_qual_matches[0]; // It is assumed that there will be only
702  // one!
703  else if (param_matches.size())
704  return param_matches[0]; // Return one of them as a best match
705  else
706  return ConstString();
707 }
708 
711  lldb::FunctionNameType mask;
712 
714  lldb::FunctionNameType m = lldb::eFunctionNameTypeFull)
715  : name(n), mask(m) {}
716 };
717 
718 void IRExecutionUnit::CollectCandidateCNames(
719  std::vector<IRExecutionUnit::SearchSpec> &C_specs,
720  ConstString name) {
721  if (m_strip_underscore && name.AsCString()[0] == '_')
722  C_specs.insert(C_specs.begin(), ConstString(&name.AsCString()[1]));
723  C_specs.push_back(SearchSpec(name));
724 }
725 
726 void IRExecutionUnit::CollectCandidateCPlusPlusNames(
727  std::vector<IRExecutionUnit::SearchSpec> &CPP_specs,
728  const std::vector<SearchSpec> &C_specs, const SymbolContext &sc) {
729  for (const SearchSpec &C_spec : C_specs) {
730  ConstString name = C_spec.name;
731 
733  Mangled mangled(name, true);
734  ConstString demangled =
735  mangled.GetDemangledName(lldb::eLanguageTypeC_plus_plus);
736 
737  if (demangled) {
738  ConstString best_alternate_mangled_name = FindBestAlternateMangledName(
739  demangled, lldb::eLanguageTypeC_plus_plus, sc);
740 
741  if (best_alternate_mangled_name) {
742  CPP_specs.push_back(best_alternate_mangled_name);
743  }
744 
745  CPP_specs.push_back(SearchSpec(demangled, lldb::eFunctionNameTypeFull));
746  }
747  }
748 
749  std::set<ConstString> alternates;
751  CPP_specs.insert(CPP_specs.end(), alternates.begin(), alternates.end());
752  }
753 }
754 
755 void IRExecutionUnit::CollectFallbackNames(
756  std::vector<SearchSpec> &fallback_specs,
757  const std::vector<SearchSpec> &C_specs) {
758  // As a last-ditch fallback, try the base name for C++ names. It's terrible,
759  // but the DWARF doesn't always encode "extern C" correctly.
760 
761  for (const SearchSpec &C_spec : C_specs) {
762  ConstString name = C_spec.name;
763 
765  Mangled mangled_name(name);
766  ConstString demangled_name =
767  mangled_name.GetDemangledName(lldb::eLanguageTypeC_plus_plus);
768  if (!demangled_name.IsEmpty()) {
769  const char *demangled_cstr = demangled_name.AsCString();
770  const char *lparen_loc = strchr(demangled_cstr, '(');
771  if (lparen_loc) {
772  llvm::StringRef base_name(demangled_cstr,
773  lparen_loc - demangled_cstr);
774  fallback_specs.push_back(ConstString(base_name));
775  }
776  }
777  }
778  }
779 }
780 
781 lldb::addr_t IRExecutionUnit::FindInSymbols(
782  const std::vector<IRExecutionUnit::SearchSpec> &specs,
783  const lldb_private::SymbolContext &sc) {
784  Target *target = sc.target_sp.get();
785 
786  if (!target) {
787  // we shouldn't be doing any symbol lookup at all without a target
788  return LLDB_INVALID_ADDRESS;
789  }
790 
791  for (const SearchSpec &spec : specs) {
792  SymbolContextList sc_list;
793 
794  lldb::addr_t best_internal_load_address = LLDB_INVALID_ADDRESS;
795 
796  std::function<bool(lldb::addr_t &, SymbolContextList &,
798  get_external_load_address = [&best_internal_load_address, target](
799  lldb::addr_t &load_address, SymbolContextList &sc_list,
801  load_address = LLDB_INVALID_ADDRESS;
802 
803  for (size_t si = 0, se = sc_list.GetSize(); si < se; ++si) {
804  SymbolContext candidate_sc;
805 
806  sc_list.GetContextAtIndex(si, candidate_sc);
807 
808  const bool is_external =
809  (candidate_sc.function) ||
810  (candidate_sc.symbol && candidate_sc.symbol->IsExternal());
811  if (candidate_sc.symbol) {
812  load_address = candidate_sc.symbol->ResolveCallableAddress(*target);
813 
814  if (load_address == LLDB_INVALID_ADDRESS) {
815  if (target->GetProcessSP())
816  load_address =
817  candidate_sc.symbol->GetAddress().GetLoadAddress(target);
818  else
819  load_address = candidate_sc.symbol->GetAddress().GetFileAddress();
820  }
821  }
822 
823  if (load_address == LLDB_INVALID_ADDRESS && candidate_sc.function) {
824  if (target->GetProcessSP())
825  load_address = candidate_sc.function->GetAddressRange()
826  .GetBaseAddress()
827  .GetLoadAddress(target);
828  else
829  load_address = candidate_sc.function->GetAddressRange()
830  .GetBaseAddress()
831  .GetFileAddress();
832  }
833 
834  if (load_address != LLDB_INVALID_ADDRESS) {
835  if (is_external) {
836  return true;
837  } else if (best_internal_load_address == LLDB_INVALID_ADDRESS) {
838  best_internal_load_address = load_address;
839  load_address = LLDB_INVALID_ADDRESS;
840  }
841  }
842  }
843 
844  return false;
845  };
846 
847  if (sc.module_sp) {
848  sc.module_sp->FindFunctions(spec.name, NULL, spec.mask,
849  true, // include_symbols
850  false, // include_inlines
851  true, // append
852  sc_list);
853  }
854 
855  lldb::addr_t load_address = LLDB_INVALID_ADDRESS;
856 
857  if (get_external_load_address(load_address, sc_list, sc)) {
858  return load_address;
859  } else {
860  sc_list.Clear();
861  }
862 
863  if (sc_list.GetSize() == 0 && sc.target_sp) {
864  sc.target_sp->GetImages().FindFunctions(spec.name, spec.mask,
865  true, // include_symbols
866  false, // include_inlines
867  true, // append
868  sc_list);
869  }
870 
871  if (get_external_load_address(load_address, sc_list, sc)) {
872  return load_address;
873  } else {
874  sc_list.Clear();
875  }
876 
877  if (sc_list.GetSize() == 0 && sc.target_sp) {
878  sc.target_sp->GetImages().FindSymbolsWithNameAndType(
879  spec.name, lldb::eSymbolTypeAny, sc_list);
880  }
881 
882  if (get_external_load_address(load_address, sc_list, sc)) {
883  return load_address;
884  }
885  // if there are any searches we try after this, add an sc_list.Clear() in
886  // an "else" clause here
887 
888  if (best_internal_load_address != LLDB_INVALID_ADDRESS) {
889  return best_internal_load_address;
890  }
891  }
892 
893  return LLDB_INVALID_ADDRESS;
894 }
895 
897 IRExecutionUnit::FindInRuntimes(const std::vector<SearchSpec> &specs,
898  const lldb_private::SymbolContext &sc) {
899  lldb::TargetSP target_sp = sc.target_sp;
900 
901  if (!target_sp) {
902  return LLDB_INVALID_ADDRESS;
903  }
904 
905  lldb::ProcessSP process_sp = sc.target_sp->GetProcessSP();
906 
907  if (!process_sp) {
908  return LLDB_INVALID_ADDRESS;
909  }
910 
911  ObjCLanguageRuntime *runtime = process_sp->GetObjCLanguageRuntime();
912 
913  if (runtime) {
914  for (const SearchSpec &spec : specs) {
915  lldb::addr_t symbol_load_addr = runtime->LookupRuntimeSymbol(spec.name);
916 
917  if (symbol_load_addr != LLDB_INVALID_ADDRESS)
918  return symbol_load_addr;
919  }
920  }
921 
922  return LLDB_INVALID_ADDRESS;
923 }
924 
925 lldb::addr_t IRExecutionUnit::FindInUserDefinedSymbols(
926  const std::vector<SearchSpec> &specs,
927  const lldb_private::SymbolContext &sc) {
928  lldb::TargetSP target_sp = sc.target_sp;
929 
930  for (const SearchSpec &spec : specs) {
931  lldb::addr_t symbol_load_addr = target_sp->GetPersistentSymbol(spec.name);
932 
933  if (symbol_load_addr != LLDB_INVALID_ADDRESS)
934  return symbol_load_addr;
935  }
936 
937  return LLDB_INVALID_ADDRESS;
938 }
939 
942  std::vector<SearchSpec> candidate_C_names;
943  std::vector<SearchSpec> candidate_CPlusPlus_names;
944 
945  CollectCandidateCNames(candidate_C_names, name);
946 
947  lldb::addr_t ret = FindInSymbols(candidate_C_names, m_sym_ctx);
948  if (ret == LLDB_INVALID_ADDRESS)
949  ret = FindInRuntimes(candidate_C_names, m_sym_ctx);
950 
951  if (ret == LLDB_INVALID_ADDRESS)
952  ret = FindInUserDefinedSymbols(candidate_C_names, m_sym_ctx);
953 
954  if (ret == LLDB_INVALID_ADDRESS) {
955  CollectCandidateCPlusPlusNames(candidate_CPlusPlus_names, candidate_C_names,
956  m_sym_ctx);
957  ret = FindInSymbols(candidate_CPlusPlus_names, m_sym_ctx);
958  }
959 
960  if (ret == LLDB_INVALID_ADDRESS) {
961  std::vector<SearchSpec> candidate_fallback_names;
962 
963  CollectFallbackNames(candidate_fallback_names, candidate_C_names);
964  ret = FindInSymbols(candidate_fallback_names, m_sym_ctx);
965  }
966 
967  return ret;
968 }
969 
971  std::vector<lldb::addr_t> &static_initializers) {
972  if (llvm::GlobalVariable *global_ctors =
973  m_module->getNamedGlobal("llvm.global_ctors")) {
974  if (llvm::ConstantArray *ctor_array = llvm::dyn_cast<llvm::ConstantArray>(
975  global_ctors->getInitializer())) {
976  for (llvm::Use &ctor_use : ctor_array->operands()) {
977  if (llvm::ConstantStruct *ctor_struct =
978  llvm::dyn_cast<llvm::ConstantStruct>(ctor_use)) {
979  lldbassert(ctor_struct->getNumOperands() ==
980  3); // this is standardized
981  if (llvm::Function *ctor_function =
982  llvm::dyn_cast<llvm::Function>(ctor_struct->getOperand(1))) {
983  ConstString ctor_function_name_cs(ctor_function->getName().str());
984 
985  for (JittedFunction &jitted_function : m_jitted_functions) {
986  if (ctor_function_name_cs == jitted_function.m_name) {
987  if (jitted_function.m_remote_addr != LLDB_INVALID_ADDRESS) {
988  static_initializers.push_back(jitted_function.m_remote_addr);
989  }
990  break;
991  }
992  }
993  }
994  }
995  }
996  }
997  }
998 }
999 
1000 uint64_t
1001 IRExecutionUnit::MemoryManager::getSymbolAddress(const std::string &Name) {
1003 
1004  ConstString name_cs(Name.c_str());
1005 
1006  lldb::addr_t ret = m_parent.FindSymbol(name_cs);
1007 
1008  if (ret == LLDB_INVALID_ADDRESS) {
1009  if (log)
1010  log->Printf(
1011  "IRExecutionUnit::getSymbolAddress(Name=\"%s\") = <not found>",
1012  Name.c_str());
1013 
1014  m_parent.ReportSymbolLookupError(name_cs);
1015  return 0;
1016  } else {
1017  if (log)
1018  log->Printf("IRExecutionUnit::getSymbolAddress(Name=\"%s\") = %" PRIx64,
1019  Name.c_str(), ret);
1020  return ret;
1021  }
1022 }
1023 
1024 void *IRExecutionUnit::MemoryManager::getPointerToNamedFunction(
1025  const std::string &Name, bool AbortOnFailure) {
1026  assert(sizeof(void *) == 8);
1027 
1028  return (void *)getSymbolAddress(Name);
1029 }
1030 
1032 IRExecutionUnit::GetRemoteAddressForLocal(lldb::addr_t local_address) {
1034 
1035  for (AllocationRecord &record : m_records) {
1036  if (local_address >= record.m_host_address &&
1037  local_address < record.m_host_address + record.m_size) {
1038  if (record.m_process_address == LLDB_INVALID_ADDRESS)
1039  return LLDB_INVALID_ADDRESS;
1040 
1041  lldb::addr_t ret =
1042  record.m_process_address + (local_address - record.m_host_address);
1043 
1044  if (log) {
1045  log->Printf(
1046  "IRExecutionUnit::GetRemoteAddressForLocal() found 0x%" PRIx64
1047  " in [0x%" PRIx64 "..0x%" PRIx64 "], and returned 0x%" PRIx64
1048  " from [0x%" PRIx64 "..0x%" PRIx64 "].",
1049  local_address, (uint64_t)record.m_host_address,
1050  (uint64_t)record.m_host_address + (uint64_t)record.m_size, ret,
1051  record.m_process_address, record.m_process_address + record.m_size);
1052  }
1053 
1054  return ret;
1055  }
1056  }
1057 
1058  return LLDB_INVALID_ADDRESS;
1059 }
1060 
1061 IRExecutionUnit::AddrRange
1062 IRExecutionUnit::GetRemoteRangeForLocal(lldb::addr_t local_address) {
1063  for (AllocationRecord &record : m_records) {
1064  if (local_address >= record.m_host_address &&
1065  local_address < record.m_host_address + record.m_size) {
1066  if (record.m_process_address == LLDB_INVALID_ADDRESS)
1067  return AddrRange(0, 0);
1068 
1069  return AddrRange(record.m_process_address, record.m_size);
1070  }
1071  }
1072 
1073  return AddrRange(0, 0);
1074 }
1075 
1076 bool IRExecutionUnit::CommitOneAllocation(lldb::ProcessSP &process_sp,
1077  Status &error,
1078  AllocationRecord &record) {
1079  if (record.m_process_address != LLDB_INVALID_ADDRESS) {
1080  return true;
1081  }
1082 
1083  switch (record.m_sect_type) {
1105  error.Clear();
1106  break;
1107  default:
1108  const bool zero_memory = false;
1109  record.m_process_address =
1110  Malloc(record.m_size, record.m_alignment, record.m_permissions,
1111  eAllocationPolicyProcessOnly, zero_memory, error);
1112  break;
1113  }
1114 
1115  return error.Success();
1116 }
1117 
1118 bool IRExecutionUnit::CommitAllocations(lldb::ProcessSP &process_sp) {
1119  bool ret = true;
1120 
1122 
1123  for (AllocationRecord &record : m_records) {
1124  ret = CommitOneAllocation(process_sp, err, record);
1125 
1126  if (!ret) {
1127  break;
1128  }
1129  }
1130 
1131  if (!ret) {
1132  for (AllocationRecord &record : m_records) {
1133  if (record.m_process_address != LLDB_INVALID_ADDRESS) {
1134  Free(record.m_process_address, err);
1135  record.m_process_address = LLDB_INVALID_ADDRESS;
1136  }
1137  }
1138  }
1139 
1140  return ret;
1141 }
1142 
1143 void IRExecutionUnit::ReportAllocations(llvm::ExecutionEngine &engine) {
1144  m_reported_allocations = true;
1145 
1146  for (AllocationRecord &record : m_records) {
1147  if (record.m_process_address == LLDB_INVALID_ADDRESS)
1148  continue;
1149 
1150  if (record.m_section_id == eSectionIDInvalid)
1151  continue;
1152 
1153  engine.mapSectionAddress((void *)record.m_host_address,
1154  record.m_process_address);
1155  }
1156 
1157  // Trigger re-application of relocations.
1158  engine.finalizeObject();
1159 }
1160 
1161 bool IRExecutionUnit::WriteData(lldb::ProcessSP &process_sp) {
1162  bool wrote_something = false;
1163  for (AllocationRecord &record : m_records) {
1164  if (record.m_process_address != LLDB_INVALID_ADDRESS) {
1166  WriteMemory(record.m_process_address, (uint8_t *)record.m_host_address,
1167  record.m_size, err);
1168  if (err.Success())
1169  wrote_something = true;
1170  }
1171  }
1172  return wrote_something;
1173 }
1174 
1175 void IRExecutionUnit::AllocationRecord::dump(Log *log) {
1176  if (!log)
1177  return;
1178 
1179  log->Printf("[0x%llx+0x%llx]->0x%llx (alignment %d, section ID %d, name %s)",
1180  (unsigned long long)m_host_address, (unsigned long long)m_size,
1181  (unsigned long long)m_process_address, (unsigned)m_alignment,
1182  (unsigned)m_section_id, m_name.c_str());
1183 }
1184 
1187  return exe_ctx.GetByteOrder();
1188 }
1189 
1192  return exe_ctx.GetAddressByteSize();
1193 }
1194 
1196  lldb_private::Symtab &symtab) {
1197  // No symbols yet...
1198 }
1199 
1201  lldb_private::ObjectFile *obj_file,
1202  lldb_private::SectionList &section_list) {
1203  for (AllocationRecord &record : m_records) {
1204  if (record.m_size > 0) {
1205  lldb::SectionSP section_sp(new lldb_private::Section(
1206  obj_file->GetModule(), obj_file, record.m_section_id,
1207  ConstString(record.m_name), record.m_sect_type,
1208  record.m_process_address, record.m_size,
1209  record.m_host_address, // file_offset (which is the host address for
1210  // the data)
1211  record.m_size, // file_size
1212  0,
1213  record.m_permissions)); // flags
1214  section_list.AddSection(section_sp);
1215  }
1216  }
1217 }
1218 
1221  if(Target *target = exe_ctx.GetTargetPtr())
1222  return target->GetArchitecture();
1223  return ArchSpec();
1224 }
1225 
1228  Target *target = exe_ctx.GetTargetPtr();
1229  if (!target)
1230  return nullptr;
1231 
1233  shared_from_this());
1234 
1235  lldb::ModuleSP jit_module_sp =
1236  lldb_private::Module::CreateModuleFromObjectFile<ObjectFileJIT>(Delegate);
1237  if (!jit_module_sp)
1238  return nullptr;
1239 
1240  bool changed = false;
1241  jit_module_sp->SetLoadAddress(*target, 0, true, changed);
1242  return jit_module_sp;
1243 }
void Free(lldb::addr_t process_address, Status &error)
size_t PutCString(llvm::StringRef cstr)
Output a C string to the stream.
Definition: Stream.cpp:61
lldb::TargetSP target_sp
The Target for a given query.
An data extractor class.
Definition: DataExtractor.h:47
Defines a list of symbol context objects.
Enumerations for broadcasting.
Definition: SBLaunchInfo.h:14
const ArchSpec & GetArchitecture() const
Definition: Target.h:941
const char * AsCString(const char *value_if_empty=nullptr) const
Get the string value as a C string.
Definition: ConstString.h:224
A stream class that can stream formatted output to a file.
Definition: Stream.h:28
uint32_t GetAddressByteSize() const override
#define lldbassert(x)
Definition: LLDBAssert.h:15
ArchSpec GetArchitecture() override
Defines a symbol context baton that can be handed other debug core functions.
Definition: SymbolContext.h:33
uint32_t GetAddressByteSize() const
Returns the size in bytes of an address of the current architecture.
Definition: ArchSpec.cpp:742
Format output as unsigned 8 bit integers.
Definition: DataExtractor.h:52
lldb::addr_t GetLoadAddress(Target *target) const
Get the load address.
Definition: Address.cpp:292
void PopulateSectionList(lldb_private::ObjectFile *obj_file, lldb_private::SectionList &section_list) override
SymbolFile * GetSymbolFile()
Definition: SymbolVendor.h:125
virtual lldb::addr_t LookupRuntimeSymbol(ConstString name)
ExecutionContextScope * GetBestExecutionContextScope() const
An architecture specification class.
Definition: ArchSpec.h:32
void WriteMemory(lldb::addr_t process_address, const uint8_t *bytes, size_t size, Status &error)
lldb::addr_t GetFileAddress() const
Get the file address.
Definition: Address.cpp:272
A plug-in interface definition class for object file parsers.
Definition: ObjectFile.h:58
"lldb/Target/ExecutionContext.h" A class that contains an execution context.
lldb::ByteOrder GetByteOrder() const
Definition: Process.cpp:3366
virtual void GetMangledNamesForFunction(const std::string &scope_qualified_name, std::vector< ConstString > &mangled_names)
Definition: SymbolFile.cpp:135
Address GetAddress() const
Definition: Symbol.h:72
void GetStaticInitializers(std::vector< lldb::addr_t > &static_initializers)
const char * GetData() const
Definition: StreamString.h:43
Symbol * symbol
The Symbol for a given query.
lldb::ModuleSP GetModule() const
Get const accessor for the module pointer.
Definition: ModuleChild.cpp:27
A subclass of DataBuffer that stores a data buffer on the heap.
"lldb/Expression/IRExecutionUnit.h" Contains the IR and, optionally, JIT- compiled code for a module...
static lldb::DisassemblerSP FindPlugin(const ArchSpec &arch, const char *flavor, const char *plugin_name)
The intent is that this allocation exist only in the process.
Definition: IRMemoryMap.h:49
Function * function
The Function for a given query.
lldb::ByteOrder GetByteOrder() const override
ObjectFileJITDelegate overrides.
#define UINT32_MAX
Definition: lldb-defines.h:31
static bool IsCPPMangledName(const char *name)
void FreeNow(lldb::addr_t allocation)
Target * GetTargetPtr() const
Returns a pointer to the target object.
#define LLDB_INVALID_ADDRESS
Invalid value definitions.
Definition: lldb-defines.h:85
LanguageType
Programming language type.
const lldb::ProcessSP & GetProcessSP() const
Definition: Target.cpp:206
"lldb/Expression/IRExecutionUnit.h" Encapsulates a single function that has been generated by the JIT...
Encapsulates memory that may exist in the process but must also be available in the host process...
Definition: IRMemoryMap.h:34
void SetErrorToGenericError()
Set the current error to a generic error.
Definition: Status.cpp:231
Log * GetLogIfAllCategoriesSet(uint32_t mask)
Definition: Logging.cpp:57
lldb::addr_t FindSymbol(ConstString name)
The intent is that this allocation exist both in the host and the process and have the same content i...
Definition: IRMemoryMap.h:46
void Clear()
Clear the object state.
Definition: Status.cpp:167
llvm::StringRef GetString() const
IRExecutionUnit(std::unique_ptr< llvm::LLVMContext > &context_up, std::unique_ptr< llvm::Module > &module_up, ConstString &name, const lldb::TargetSP &target_sp, const SymbolContext &sym_ctx, std::vector< std::string > &cpu_features)
Constructor.
void SetErrorString(llvm::StringRef err_str)
Set the current error string to err_str.
Definition: Status.cpp:241
lldb::addr_t WriteNow(const uint8_t *bytes, size_t size, Status &error)
Accessors for IRForTarget and other clients that may want binary data placed on their behalf...
A plug-in interface definition class for debugging a process.
Definition: Process.h:353
Process * GetProcessPtr() const
Returns a pointer to the process object.
lldb::addr_t ResolveCallableAddress(Target &target) const
Definition: Symbol.cpp:501
static uint32_t FindAlternateFunctionManglings(const ConstString mangled, std::set< ConstString > &candidates)
void PopulateSymtab(lldb_private::ObjectFile *obj_file, lldb_private::Symtab &symtab) override
bool Success() const
Test for success condition.
Definition: Status.cpp:287
A section + offset based address class.
Definition: Address.h:80
lldb::ByteOrder GetByteOrder() const
void GetRunnableInfo(Status &error, lldb::addr_t &func_addr, lldb::addr_t &func_end)
lldb::ProcessWP & GetProcessWP()
Definition: IRMemoryMap.h:86
uint64_t addr_t
Definition: lldb-types.h:83
A uniqued constant string class.
Definition: ConstString.h:38
~IRExecutionUnit() override
Destructor.
const char * GetCString() const
Get the string value as a C string.
Definition: ConstString.h:247
lldb::ModuleSP module_sp
The Module for a given query.
size_t AddSection(const lldb::SectionSP &section_sp)
Definition: Section.cpp:428
SharingPtr< T > static_pointer_cast(const SharingPtr< U > &r)
Definition: SharingPtr.h:355
uint8_t * GetBytes() override
Address & GetBaseAddress()
Get accessor for the base address of the range.
Definition: AddressRange.h:220
lldb::addr_t Malloc(size_t size, uint8_t alignment, uint32_t permissions, AllocationPolicy policy, bool zero_memory, Status &error)
bool IsExternal() const
Definition: Symbol.h:161
int SetErrorStringWithFormat(const char *format,...) __attribute__((format(printf
Set the current error string to a formatted error string.
Definition: Status.cpp:255
lldb::offset_t PutToLog(Log *log, lldb::offset_t offset, lldb::offset_t length, uint64_t base_addr, uint32_t num_per_line, Type type, const char *type_format=nullptr) const
Dumps the binary data as type objects to stream s (or to Log() if s is nullptr) starting offset bytes...
#define LIBLLDB_LOG_EXPRESSIONS
Definition: Logging.h:22
static ConstString FindBestAlternateMangledName(ConstString demangled, const lldb::LanguageType &lang_type, const SymbolContext &sym_ctx)
const char * AsCString(const char *default_error_str="unknown error") const
Get the error string associated with the current error.
Definition: Status.cpp:130
const AddressRange & GetAddressRange()
Definition: Function.h:371
lldb::offset_t GetByteSize() const override
SearchSpec(ConstString n, lldb::FunctionNameType m=lldb::eFunctionNameTypeFull)
void Printf(const char *format,...) __attribute__((format(printf
Definition: Log.cpp:113
bool IsEmpty() const
Test for empty string.
Definition: ConstString.h:340
void Dump(Stream *s, bool show_address, bool show_bytes, const ExecutionContext *exe_ctx)
void ReadMemory(uint8_t *bytes, lldb::addr_t process_address, size_t size, Status &error)
static void ReportInlineAsmError(const llvm::SMDiagnostic &diagnostic, void *Context, unsigned LocCookie)
An error handling class.
Definition: Status.h:44
virtual size_t ReadMemory(lldb::addr_t vm_addr, void *buf, size_t size, Status &error)
Read of memory from a process.
Definition: Process.cpp:1966