1 //===-- ItaniumABILanguageRuntime.cpp --------------------------------------*- 2 //C++ -*-===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "ItaniumABILanguageRuntime.h" 11 12 #include "lldb/Breakpoint/BreakpointLocation.h" 13 #include "lldb/Core/Mangled.h" 14 #include "lldb/Core/Module.h" 15 #include "lldb/Core/PluginManager.h" 16 #include "lldb/Core/ValueObject.h" 17 #include "lldb/Core/ValueObjectMemory.h" 18 #include "lldb/DataFormatters/FormattersHelpers.h" 19 #include "lldb/Expression/DiagnosticManager.h" 20 #include "lldb/Expression/FunctionCaller.h" 21 #include "lldb/Interpreter/CommandObject.h" 22 #include "lldb/Interpreter/CommandObjectMultiword.h" 23 #include "lldb/Interpreter/CommandReturnObject.h" 24 #include "lldb/Symbol/ClangASTContext.h" 25 #include "lldb/Symbol/Symbol.h" 26 #include "lldb/Symbol/SymbolFile.h" 27 #include "lldb/Symbol/TypeList.h" 28 #include "lldb/Target/Process.h" 29 #include "lldb/Target/RegisterContext.h" 30 #include "lldb/Target/SectionLoadList.h" 31 #include "lldb/Target/StopInfo.h" 32 #include "lldb/Target/Target.h" 33 #include "lldb/Target/Thread.h" 34 #include "lldb/Utility/ConstString.h" 35 #include "lldb/Utility/Log.h" 36 #include "lldb/Utility/Scalar.h" 37 #include "lldb/Utility/Status.h" 38 39 #include <vector> 40 41 using namespace lldb; 42 using namespace lldb_private; 43 44 static const char *vtable_demangled_prefix = "vtable for "; 45 46 char ItaniumABILanguageRuntime::ID = 0; 47 48 bool ItaniumABILanguageRuntime::CouldHaveDynamicValue(ValueObject &in_value) { 49 const bool check_cxx = true; 50 const bool check_objc = false; 51 return in_value.GetCompilerType().IsPossibleDynamicType(nullptr, check_cxx, 52 check_objc); 53 } 54 55 TypeAndOrName ItaniumABILanguageRuntime::GetTypeInfoFromVTableAddress( 56 ValueObject &in_value, lldb::addr_t original_ptr, 57 lldb::addr_t vtable_load_addr) { 58 if (m_process && vtable_load_addr != LLDB_INVALID_ADDRESS) { 59 // Find the symbol that contains the "vtable_load_addr" address 60 Address vtable_addr; 61 Target &target = m_process->GetTarget(); 62 if (!target.GetSectionLoadList().IsEmpty()) { 63 if (target.GetSectionLoadList().ResolveLoadAddress(vtable_load_addr, 64 vtable_addr)) { 65 // See if we have cached info for this type already 66 TypeAndOrName type_info = GetDynamicTypeInfo(vtable_addr); 67 if (type_info) 68 return type_info; 69 70 SymbolContext sc; 71 target.GetImages().ResolveSymbolContextForAddress( 72 vtable_addr, eSymbolContextSymbol, sc); 73 Symbol *symbol = sc.symbol; 74 if (symbol != nullptr) { 75 const char *name = 76 symbol->GetMangled() 77 .GetDemangledName(lldb::eLanguageTypeC_plus_plus) 78 .AsCString(); 79 if (name && strstr(name, vtable_demangled_prefix) == name) { 80 Log *log( 81 lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 82 if (log) 83 log->Printf("0x%16.16" PRIx64 84 ": static-type = '%s' has vtable symbol '%s'\n", 85 original_ptr, in_value.GetTypeName().GetCString(), 86 name); 87 // We are a C++ class, that's good. Get the class name and look it 88 // up: 89 const char *class_name = name + strlen(vtable_demangled_prefix); 90 // We know the class name is absolute, so tell FindTypes that by 91 // prefixing it with the root namespace: 92 std::string lookup_name("::"); 93 lookup_name.append(class_name); 94 95 type_info.SetName(class_name); 96 const bool exact_match = true; 97 TypeList class_types; 98 99 uint32_t num_matches = 0; 100 // First look in the module that the vtable symbol came from and 101 // look for a single exact match. 102 llvm::DenseSet<SymbolFile *> searched_symbol_files; 103 if (sc.module_sp) { 104 num_matches = sc.module_sp->FindTypes( 105 ConstString(lookup_name), exact_match, 1, 106 searched_symbol_files, class_types); 107 } 108 109 // If we didn't find a symbol, then move on to the entire module 110 // list in the target and get as many unique matches as possible 111 if (num_matches == 0) { 112 num_matches = target.GetImages().FindTypes( 113 nullptr, ConstString(lookup_name), exact_match, UINT32_MAX, 114 searched_symbol_files, class_types); 115 } 116 117 lldb::TypeSP type_sp; 118 if (num_matches == 0) { 119 if (log) 120 log->Printf("0x%16.16" PRIx64 ": is not dynamic\n", 121 original_ptr); 122 return TypeAndOrName(); 123 } 124 if (num_matches == 1) { 125 type_sp = class_types.GetTypeAtIndex(0); 126 if (type_sp) { 127 if (ClangASTContext::IsCXXClassType( 128 type_sp->GetForwardCompilerType())) { 129 if (log) 130 log->Printf( 131 "0x%16.16" PRIx64 132 ": static-type = '%s' has dynamic type: uid={0x%" PRIx64 133 "}, type-name='%s'\n", 134 original_ptr, in_value.GetTypeName().AsCString(), 135 type_sp->GetID(), type_sp->GetName().GetCString()); 136 type_info.SetTypeSP(type_sp); 137 } 138 } 139 } else if (num_matches > 1) { 140 size_t i; 141 if (log) { 142 for (i = 0; i < num_matches; i++) { 143 type_sp = class_types.GetTypeAtIndex(i); 144 if (type_sp) { 145 if (log) 146 log->Printf( 147 "0x%16.16" PRIx64 148 ": static-type = '%s' has multiple matching dynamic " 149 "types: uid={0x%" PRIx64 "}, type-name='%s'\n", 150 original_ptr, in_value.GetTypeName().AsCString(), 151 type_sp->GetID(), type_sp->GetName().GetCString()); 152 } 153 } 154 } 155 156 for (i = 0; i < num_matches; i++) { 157 type_sp = class_types.GetTypeAtIndex(i); 158 if (type_sp) { 159 if (ClangASTContext::IsCXXClassType( 160 type_sp->GetForwardCompilerType())) { 161 if (log) 162 log->Printf( 163 "0x%16.16" PRIx64 ": static-type = '%s' has multiple " 164 "matching dynamic types, picking " 165 "this one: uid={0x%" PRIx64 166 "}, type-name='%s'\n", 167 original_ptr, in_value.GetTypeName().AsCString(), 168 type_sp->GetID(), type_sp->GetName().GetCString()); 169 type_info.SetTypeSP(type_sp); 170 } 171 } 172 } 173 174 if (log && i == num_matches) { 175 log->Printf( 176 "0x%16.16" PRIx64 177 ": static-type = '%s' has multiple matching dynamic " 178 "types, didn't find a C++ match\n", 179 original_ptr, in_value.GetTypeName().AsCString()); 180 } 181 } 182 if (type_info) 183 SetDynamicTypeInfo(vtable_addr, type_info); 184 return type_info; 185 } 186 } 187 } 188 } 189 } 190 return TypeAndOrName(); 191 } 192 193 bool ItaniumABILanguageRuntime::GetDynamicTypeAndAddress( 194 ValueObject &in_value, lldb::DynamicValueType use_dynamic, 195 TypeAndOrName &class_type_or_name, Address &dynamic_address, 196 Value::ValueType &value_type) { 197 // For Itanium, if the type has a vtable pointer in the object, it will be at 198 // offset 0 in the object. That will point to the "address point" within the 199 // vtable (not the beginning of the vtable.) We can then look up the symbol 200 // containing this "address point" and that symbol's name demangled will 201 // contain the full class name. The second pointer above the "address point" 202 // is the "offset_to_top". We'll use that to get the start of the value 203 // object which holds the dynamic type. 204 // 205 206 class_type_or_name.Clear(); 207 value_type = Value::ValueType::eValueTypeScalar; 208 209 // Only a pointer or reference type can have a different dynamic and static 210 // type: 211 if (!CouldHaveDynamicValue(in_value)) 212 return false; 213 214 // First job, pull out the address at 0 offset from the object. 215 AddressType address_type; 216 lldb::addr_t original_ptr = in_value.GetPointerValue(&address_type); 217 if (original_ptr == LLDB_INVALID_ADDRESS) 218 return false; 219 220 ExecutionContext exe_ctx(in_value.GetExecutionContextRef()); 221 222 Process *process = exe_ctx.GetProcessPtr(); 223 224 if (process == nullptr) 225 return false; 226 227 Status error; 228 const lldb::addr_t vtable_address_point = 229 process->ReadPointerFromMemory(original_ptr, error); 230 231 if (!error.Success() || vtable_address_point == LLDB_INVALID_ADDRESS) 232 return false; 233 234 class_type_or_name = GetTypeInfoFromVTableAddress(in_value, original_ptr, 235 vtable_address_point); 236 237 if (!class_type_or_name) 238 return false; 239 240 CompilerType type = class_type_or_name.GetCompilerType(); 241 // There can only be one type with a given name, so we've just found 242 // duplicate definitions, and this one will do as well as any other. We 243 // don't consider something to have a dynamic type if it is the same as 244 // the static type. So compare against the value we were handed. 245 if (!type) 246 return true; 247 248 if (ClangASTContext::AreTypesSame(in_value.GetCompilerType(), type)) { 249 // The dynamic type we found was the same type, so we don't have a 250 // dynamic type here... 251 return false; 252 } 253 254 // The offset_to_top is two pointers above the vtable pointer. 255 const uint32_t addr_byte_size = process->GetAddressByteSize(); 256 const lldb::addr_t offset_to_top_location = 257 vtable_address_point - 2 * addr_byte_size; 258 // Watch for underflow, offset_to_top_location should be less than 259 // vtable_address_point 260 if (offset_to_top_location >= vtable_address_point) 261 return false; 262 const int64_t offset_to_top = process->ReadSignedIntegerFromMemory( 263 offset_to_top_location, addr_byte_size, INT64_MIN, error); 264 265 if (offset_to_top == INT64_MIN) 266 return false; 267 // So the dynamic type is a value that starts at offset_to_top above 268 // the original address. 269 lldb::addr_t dynamic_addr = original_ptr + offset_to_top; 270 if (!process->GetTarget().GetSectionLoadList().ResolveLoadAddress( 271 dynamic_addr, dynamic_address)) { 272 dynamic_address.SetRawAddress(dynamic_addr); 273 } 274 return true; 275 } 276 277 TypeAndOrName ItaniumABILanguageRuntime::FixUpDynamicType( 278 const TypeAndOrName &type_and_or_name, ValueObject &static_value) { 279 CompilerType static_type(static_value.GetCompilerType()); 280 Flags static_type_flags(static_type.GetTypeInfo()); 281 282 TypeAndOrName ret(type_and_or_name); 283 if (type_and_or_name.HasType()) { 284 // The type will always be the type of the dynamic object. If our parent's 285 // type was a pointer, then our type should be a pointer to the type of the 286 // dynamic object. If a reference, then the original type should be 287 // okay... 288 CompilerType orig_type = type_and_or_name.GetCompilerType(); 289 CompilerType corrected_type = orig_type; 290 if (static_type_flags.AllSet(eTypeIsPointer)) 291 corrected_type = orig_type.GetPointerType(); 292 else if (static_type_flags.AllSet(eTypeIsReference)) 293 corrected_type = orig_type.GetLValueReferenceType(); 294 ret.SetCompilerType(corrected_type); 295 } else { 296 // If we are here we need to adjust our dynamic type name to include the 297 // correct & or * symbol 298 std::string corrected_name(type_and_or_name.GetName().GetCString()); 299 if (static_type_flags.AllSet(eTypeIsPointer)) 300 corrected_name.append(" *"); 301 else if (static_type_flags.AllSet(eTypeIsReference)) 302 corrected_name.append(" &"); 303 // the parent type should be a correctly pointer'ed or referenc'ed type 304 ret.SetCompilerType(static_type); 305 ret.SetName(corrected_name.c_str()); 306 } 307 return ret; 308 } 309 310 bool ItaniumABILanguageRuntime::IsVTableName(const char *name) { 311 if (name == nullptr) 312 return false; 313 314 // Can we maybe ask Clang about this? 315 return strstr(name, "_vptr$") == name; 316 } 317 318 // Static Functions 319 LanguageRuntime * 320 ItaniumABILanguageRuntime::CreateInstance(Process *process, 321 lldb::LanguageType language) { 322 // FIXME: We have to check the process and make sure we actually know that 323 // this process supports 324 // the Itanium ABI. 325 if (language == eLanguageTypeC_plus_plus || 326 language == eLanguageTypeC_plus_plus_03 || 327 language == eLanguageTypeC_plus_plus_11 || 328 language == eLanguageTypeC_plus_plus_14) 329 return new ItaniumABILanguageRuntime(process); 330 else 331 return nullptr; 332 } 333 334 class CommandObjectMultiwordItaniumABI_Demangle : public CommandObjectParsed { 335 public: 336 CommandObjectMultiwordItaniumABI_Demangle(CommandInterpreter &interpreter) 337 : CommandObjectParsed(interpreter, "demangle", 338 "Demangle a C++ mangled name.", 339 "language cplusplus demangle") { 340 CommandArgumentEntry arg; 341 CommandArgumentData index_arg; 342 343 // Define the first (and only) variant of this arg. 344 index_arg.arg_type = eArgTypeSymbol; 345 index_arg.arg_repetition = eArgRepeatPlus; 346 347 // There is only one variant this argument could be; put it into the 348 // argument entry. 349 arg.push_back(index_arg); 350 351 // Push the data for the first argument into the m_arguments vector. 352 m_arguments.push_back(arg); 353 } 354 355 ~CommandObjectMultiwordItaniumABI_Demangle() override = default; 356 357 protected: 358 bool DoExecute(Args &command, CommandReturnObject &result) override { 359 bool demangled_any = false; 360 bool error_any = false; 361 for (auto &entry : command.entries()) { 362 if (entry.ref.empty()) 363 continue; 364 365 // the actual Mangled class should be strict about this, but on the 366 // command line if you're copying mangled names out of 'nm' on Darwin, 367 // they will come out with an extra underscore - be willing to strip this 368 // on behalf of the user. This is the moral equivalent of the -_/-n 369 // options to c++filt 370 auto name = entry.ref; 371 if (name.startswith("__Z")) 372 name = name.drop_front(); 373 374 Mangled mangled(name, true); 375 if (mangled.GuessLanguage() == lldb::eLanguageTypeC_plus_plus) { 376 ConstString demangled( 377 mangled.GetDisplayDemangledName(lldb::eLanguageTypeC_plus_plus)); 378 demangled_any = true; 379 result.AppendMessageWithFormat("%s ---> %s\n", entry.ref.str().c_str(), 380 demangled.GetCString()); 381 } else { 382 error_any = true; 383 result.AppendErrorWithFormat("%s is not a valid C++ mangled name\n", 384 entry.ref.str().c_str()); 385 } 386 } 387 388 result.SetStatus( 389 error_any ? lldb::eReturnStatusFailed 390 : (demangled_any ? lldb::eReturnStatusSuccessFinishResult 391 : lldb::eReturnStatusSuccessFinishNoResult)); 392 return result.Succeeded(); 393 } 394 }; 395 396 class CommandObjectMultiwordItaniumABI : public CommandObjectMultiword { 397 public: 398 CommandObjectMultiwordItaniumABI(CommandInterpreter &interpreter) 399 : CommandObjectMultiword( 400 interpreter, "cplusplus", 401 "Commands for operating on the C++ language runtime.", 402 "cplusplus <subcommand> [<subcommand-options>]") { 403 LoadSubCommand( 404 "demangle", 405 CommandObjectSP( 406 new CommandObjectMultiwordItaniumABI_Demangle(interpreter))); 407 } 408 409 ~CommandObjectMultiwordItaniumABI() override = default; 410 }; 411 412 void ItaniumABILanguageRuntime::Initialize() { 413 PluginManager::RegisterPlugin( 414 GetPluginNameStatic(), "Itanium ABI for the C++ language", CreateInstance, 415 [](CommandInterpreter &interpreter) -> lldb::CommandObjectSP { 416 return CommandObjectSP( 417 new CommandObjectMultiwordItaniumABI(interpreter)); 418 }); 419 } 420 421 void ItaniumABILanguageRuntime::Terminate() { 422 PluginManager::UnregisterPlugin(CreateInstance); 423 } 424 425 lldb_private::ConstString ItaniumABILanguageRuntime::GetPluginNameStatic() { 426 static ConstString g_name("itanium"); 427 return g_name; 428 } 429 430 // PluginInterface protocol 431 lldb_private::ConstString ItaniumABILanguageRuntime::GetPluginName() { 432 return GetPluginNameStatic(); 433 } 434 435 uint32_t ItaniumABILanguageRuntime::GetPluginVersion() { return 1; } 436 437 BreakpointResolverSP ItaniumABILanguageRuntime::CreateExceptionResolver( 438 Breakpoint *bkpt, bool catch_bp, bool throw_bp) { 439 return CreateExceptionResolver(bkpt, catch_bp, throw_bp, false); 440 } 441 442 BreakpointResolverSP ItaniumABILanguageRuntime::CreateExceptionResolver( 443 Breakpoint *bkpt, bool catch_bp, bool throw_bp, bool for_expressions) { 444 // One complication here is that most users DON'T want to stop at 445 // __cxa_allocate_expression, but until we can do anything better with 446 // predicting unwinding the expression parser does. So we have two forms of 447 // the exception breakpoints, one for expressions that leaves out 448 // __cxa_allocate_exception, and one that includes it. The 449 // SetExceptionBreakpoints does the latter, the CreateExceptionBreakpoint in 450 // the runtime the former. 451 static const char *g_catch_name = "__cxa_begin_catch"; 452 static const char *g_throw_name1 = "__cxa_throw"; 453 static const char *g_throw_name2 = "__cxa_rethrow"; 454 static const char *g_exception_throw_name = "__cxa_allocate_exception"; 455 std::vector<const char *> exception_names; 456 exception_names.reserve(4); 457 if (catch_bp) 458 exception_names.push_back(g_catch_name); 459 460 if (throw_bp) { 461 exception_names.push_back(g_throw_name1); 462 exception_names.push_back(g_throw_name2); 463 } 464 465 if (for_expressions) 466 exception_names.push_back(g_exception_throw_name); 467 468 BreakpointResolverSP resolver_sp(new BreakpointResolverName( 469 bkpt, exception_names.data(), exception_names.size(), 470 eFunctionNameTypeBase, eLanguageTypeUnknown, 0, eLazyBoolNo)); 471 472 return resolver_sp; 473 } 474 475 lldb::SearchFilterSP ItaniumABILanguageRuntime::CreateExceptionSearchFilter() { 476 Target &target = m_process->GetTarget(); 477 478 FileSpecList filter_modules; 479 if (target.GetArchitecture().GetTriple().getVendor() == llvm::Triple::Apple) { 480 // Limit the number of modules that are searched for these breakpoints for 481 // Apple binaries. 482 filter_modules.Append(FileSpec("libc++abi.dylib")); 483 filter_modules.Append(FileSpec("libSystem.B.dylib")); 484 } 485 return target.GetSearchFilterForModuleList(&filter_modules); 486 } 487 488 lldb::BreakpointSP ItaniumABILanguageRuntime::CreateExceptionBreakpoint( 489 bool catch_bp, bool throw_bp, bool for_expressions, bool is_internal) { 490 Target &target = m_process->GetTarget(); 491 FileSpecList filter_modules; 492 BreakpointResolverSP exception_resolver_sp = 493 CreateExceptionResolver(nullptr, catch_bp, throw_bp, for_expressions); 494 SearchFilterSP filter_sp(CreateExceptionSearchFilter()); 495 const bool hardware = false; 496 const bool resolve_indirect_functions = false; 497 return target.CreateBreakpoint(filter_sp, exception_resolver_sp, is_internal, 498 hardware, resolve_indirect_functions); 499 } 500 501 void ItaniumABILanguageRuntime::SetExceptionBreakpoints() { 502 if (!m_process) 503 return; 504 505 const bool catch_bp = false; 506 const bool throw_bp = true; 507 const bool is_internal = true; 508 const bool for_expressions = true; 509 510 // For the exception breakpoints set by the Expression parser, we'll be a 511 // little more aggressive and stop at exception allocation as well. 512 513 if (m_cxx_exception_bp_sp) { 514 m_cxx_exception_bp_sp->SetEnabled(true); 515 } else { 516 m_cxx_exception_bp_sp = CreateExceptionBreakpoint( 517 catch_bp, throw_bp, for_expressions, is_internal); 518 if (m_cxx_exception_bp_sp) 519 m_cxx_exception_bp_sp->SetBreakpointKind("c++ exception"); 520 } 521 } 522 523 void ItaniumABILanguageRuntime::ClearExceptionBreakpoints() { 524 if (!m_process) 525 return; 526 527 if (m_cxx_exception_bp_sp) { 528 m_cxx_exception_bp_sp->SetEnabled(false); 529 } 530 } 531 532 bool ItaniumABILanguageRuntime::ExceptionBreakpointsAreSet() { 533 return m_cxx_exception_bp_sp && m_cxx_exception_bp_sp->IsEnabled(); 534 } 535 536 bool ItaniumABILanguageRuntime::ExceptionBreakpointsExplainStop( 537 lldb::StopInfoSP stop_reason) { 538 if (!m_process) 539 return false; 540 541 if (!stop_reason || stop_reason->GetStopReason() != eStopReasonBreakpoint) 542 return false; 543 544 uint64_t break_site_id = stop_reason->GetValue(); 545 return m_process->GetBreakpointSiteList().BreakpointSiteContainsBreakpoint( 546 break_site_id, m_cxx_exception_bp_sp->GetID()); 547 } 548 549 ValueObjectSP ItaniumABILanguageRuntime::GetExceptionObjectForThread( 550 ThreadSP thread_sp) { 551 if (!thread_sp->SafeToCallFunctions()) 552 return {}; 553 554 ClangASTContext *clang_ast_context = 555 m_process->GetTarget().GetScratchClangASTContext(); 556 CompilerType voidstar = 557 clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType(); 558 559 DiagnosticManager diagnostics; 560 ExecutionContext exe_ctx; 561 EvaluateExpressionOptions options; 562 563 options.SetUnwindOnError(true); 564 options.SetIgnoreBreakpoints(true); 565 options.SetStopOthers(true); 566 options.SetTimeout(m_process->GetUtilityExpressionTimeout()); 567 options.SetTryAllThreads(false); 568 thread_sp->CalculateExecutionContext(exe_ctx); 569 570 const ModuleList &modules = m_process->GetTarget().GetImages(); 571 SymbolContextList contexts; 572 SymbolContext context; 573 574 modules.FindSymbolsWithNameAndType( 575 ConstString("__cxa_current_exception_type"), eSymbolTypeCode, contexts); 576 contexts.GetContextAtIndex(0, context); 577 Address addr = context.symbol->GetAddress(); 578 579 Status error; 580 FunctionCaller *function_caller = 581 m_process->GetTarget().GetFunctionCallerForLanguage( 582 eLanguageTypeC, voidstar, addr, ValueList(), "caller", error); 583 584 ExpressionResults func_call_ret; 585 Value results; 586 func_call_ret = function_caller->ExecuteFunction(exe_ctx, nullptr, options, 587 diagnostics, results); 588 if (func_call_ret != eExpressionCompleted || !error.Success()) { 589 return ValueObjectSP(); 590 } 591 592 size_t ptr_size = m_process->GetAddressByteSize(); 593 addr_t result_ptr = results.GetScalar().ULongLong(LLDB_INVALID_ADDRESS); 594 addr_t exception_addr = 595 m_process->ReadPointerFromMemory(result_ptr - ptr_size, error); 596 597 if (!error.Success()) { 598 return ValueObjectSP(); 599 } 600 601 lldb_private::formatters::InferiorSizedWord exception_isw(exception_addr, 602 *m_process); 603 ValueObjectSP exception = ValueObject::CreateValueObjectFromData( 604 "exception", exception_isw.GetAsData(m_process->GetByteOrder()), exe_ctx, 605 voidstar); 606 exception = exception->GetDynamicValue(eDynamicDontRunTarget); 607 608 return exception; 609 } 610 611 TypeAndOrName ItaniumABILanguageRuntime::GetDynamicTypeInfo( 612 const lldb_private::Address &vtable_addr) { 613 std::lock_guard<std::mutex> locker(m_dynamic_type_map_mutex); 614 DynamicTypeCache::const_iterator pos = m_dynamic_type_map.find(vtable_addr); 615 if (pos == m_dynamic_type_map.end()) 616 return TypeAndOrName(); 617 else 618 return pos->second; 619 } 620 621 void ItaniumABILanguageRuntime::SetDynamicTypeInfo( 622 const lldb_private::Address &vtable_addr, const TypeAndOrName &type_info) { 623 std::lock_guard<std::mutex> locker(m_dynamic_type_map_mutex); 624 m_dynamic_type_map[vtable_addr] = type_info; 625 } 626