1 //===-- ItaniumABILanguageRuntime.cpp --------------------------------------*- 2 //C++ -*-===// 3 // 4 // The LLVM Compiler Infrastructure 5 // 6 // This file is distributed under the University of Illinois Open Source 7 // License. See LICENSE.TXT for details. 8 // 9 //===----------------------------------------------------------------------===// 10 11 #include "ItaniumABILanguageRuntime.h" 12 13 #include "lldb/Breakpoint/BreakpointLocation.h" 14 #include "lldb/Core/Mangled.h" 15 #include "lldb/Core/Module.h" 16 #include "lldb/Core/PluginManager.h" 17 #include "lldb/Core/ValueObject.h" 18 #include "lldb/Core/ValueObjectMemory.h" 19 #include "lldb/DataFormatters/FormattersHelpers.h" 20 #include "lldb/Expression/DiagnosticManager.h" 21 #include "lldb/Expression/FunctionCaller.h" 22 #include "lldb/Interpreter/CommandObject.h" 23 #include "lldb/Interpreter/CommandObjectMultiword.h" 24 #include "lldb/Interpreter/CommandReturnObject.h" 25 #include "lldb/Symbol/ClangASTContext.h" 26 #include "lldb/Symbol/Symbol.h" 27 #include "lldb/Symbol/SymbolFile.h" 28 #include "lldb/Symbol/TypeList.h" 29 #include "lldb/Target/Process.h" 30 #include "lldb/Target/RegisterContext.h" 31 #include "lldb/Target/SectionLoadList.h" 32 #include "lldb/Target/StopInfo.h" 33 #include "lldb/Target/Target.h" 34 #include "lldb/Target/Thread.h" 35 #include "lldb/Utility/ConstString.h" 36 #include "lldb/Utility/Log.h" 37 #include "lldb/Utility/Scalar.h" 38 #include "lldb/Utility/Status.h" 39 40 #include <vector> 41 42 using namespace lldb; 43 using namespace lldb_private; 44 45 static const char *vtable_demangled_prefix = "vtable for "; 46 47 bool ItaniumABILanguageRuntime::CouldHaveDynamicValue(ValueObject &in_value) { 48 const bool check_cxx = true; 49 const bool check_objc = false; 50 return in_value.GetCompilerType().IsPossibleDynamicType(NULL, check_cxx, 51 check_objc); 52 } 53 54 TypeAndOrName ItaniumABILanguageRuntime::GetTypeInfoFromVTableAddress( 55 ValueObject &in_value, lldb::addr_t original_ptr, 56 lldb::addr_t vtable_load_addr) { 57 if (m_process && vtable_load_addr != LLDB_INVALID_ADDRESS) { 58 // Find the symbol that contains the "vtable_load_addr" address 59 Address vtable_addr; 60 Target &target = m_process->GetTarget(); 61 if (!target.GetSectionLoadList().IsEmpty()) { 62 if (target.GetSectionLoadList().ResolveLoadAddress(vtable_load_addr, 63 vtable_addr)) { 64 // See if we have cached info for this type already 65 TypeAndOrName type_info = GetDynamicTypeInfo(vtable_addr); 66 if (type_info) 67 return type_info; 68 69 SymbolContext sc; 70 target.GetImages().ResolveSymbolContextForAddress( 71 vtable_addr, eSymbolContextSymbol, sc); 72 Symbol *symbol = sc.symbol; 73 if (symbol != NULL) { 74 const char *name = 75 symbol->GetMangled() 76 .GetDemangledName(lldb::eLanguageTypeC_plus_plus) 77 .AsCString(); 78 if (name && strstr(name, vtable_demangled_prefix) == name) { 79 Log *log( 80 lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 81 if (log) 82 log->Printf("0x%16.16" PRIx64 83 ": static-type = '%s' has vtable symbol '%s'\n", 84 original_ptr, in_value.GetTypeName().GetCString(), 85 name); 86 // We are a C++ class, that's good. Get the class name and look it 87 // up: 88 const char *class_name = name + strlen(vtable_demangled_prefix); 89 // We know the class name is absolute, so tell FindTypes that by 90 // prefixing it with the root namespace: 91 std::string lookup_name("::"); 92 lookup_name.append(class_name); 93 94 type_info.SetName(class_name); 95 const bool exact_match = true; 96 TypeList class_types; 97 98 uint32_t num_matches = 0; 99 // First look in the module that the vtable symbol came from and 100 // look for a single exact match. 101 llvm::DenseSet<SymbolFile *> searched_symbol_files; 102 if (sc.module_sp) { 103 num_matches = sc.module_sp->FindTypes( 104 sc, ConstString(lookup_name), exact_match, 1, 105 searched_symbol_files, class_types); 106 } 107 108 // If we didn't find a symbol, then move on to the entire module 109 // list in the target and get as many unique matches as possible 110 if (num_matches == 0) { 111 num_matches = target.GetImages().FindTypes( 112 sc, ConstString(lookup_name), exact_match, UINT32_MAX, 113 searched_symbol_files, class_types); 114 } 115 116 lldb::TypeSP type_sp; 117 if (num_matches == 0) { 118 if (log) 119 log->Printf("0x%16.16" PRIx64 ": is not dynamic\n", 120 original_ptr); 121 return TypeAndOrName(); 122 } 123 if (num_matches == 1) { 124 type_sp = class_types.GetTypeAtIndex(0); 125 if (type_sp) { 126 if (ClangASTContext::IsCXXClassType( 127 type_sp->GetForwardCompilerType())) { 128 if (log) 129 log->Printf( 130 "0x%16.16" PRIx64 131 ": static-type = '%s' has dynamic type: uid={0x%" PRIx64 132 "}, type-name='%s'\n", 133 original_ptr, in_value.GetTypeName().AsCString(), 134 type_sp->GetID(), type_sp->GetName().GetCString()); 135 type_info.SetTypeSP(type_sp); 136 } 137 } 138 } else if (num_matches > 1) { 139 size_t i; 140 if (log) { 141 for (i = 0; i < num_matches; i++) { 142 type_sp = class_types.GetTypeAtIndex(i); 143 if (type_sp) { 144 if (log) 145 log->Printf( 146 "0x%16.16" PRIx64 147 ": static-type = '%s' has multiple matching dynamic " 148 "types: uid={0x%" PRIx64 "}, type-name='%s'\n", 149 original_ptr, in_value.GetTypeName().AsCString(), 150 type_sp->GetID(), type_sp->GetName().GetCString()); 151 } 152 } 153 } 154 155 for (i = 0; i < num_matches; i++) { 156 type_sp = class_types.GetTypeAtIndex(i); 157 if (type_sp) { 158 if (ClangASTContext::IsCXXClassType( 159 type_sp->GetForwardCompilerType())) { 160 if (log) 161 log->Printf( 162 "0x%16.16" PRIx64 ": static-type = '%s' has multiple " 163 "matching dynamic types, picking " 164 "this one: uid={0x%" PRIx64 165 "}, type-name='%s'\n", 166 original_ptr, in_value.GetTypeName().AsCString(), 167 type_sp->GetID(), type_sp->GetName().GetCString()); 168 type_info.SetTypeSP(type_sp); 169 } 170 } 171 } 172 173 if (log && i == num_matches) { 174 log->Printf( 175 "0x%16.16" PRIx64 176 ": static-type = '%s' has multiple matching dynamic " 177 "types, didn't find a C++ match\n", 178 original_ptr, in_value.GetTypeName().AsCString()); 179 } 180 } 181 if (type_info) 182 SetDynamicTypeInfo(vtable_addr, type_info); 183 return type_info; 184 } 185 } 186 } 187 } 188 } 189 return TypeAndOrName(); 190 } 191 192 bool ItaniumABILanguageRuntime::GetDynamicTypeAndAddress( 193 ValueObject &in_value, lldb::DynamicValueType use_dynamic, 194 TypeAndOrName &class_type_or_name, Address &dynamic_address, 195 Value::ValueType &value_type) { 196 // For Itanium, if the type has a vtable pointer in the object, it will be at 197 // offset 0 in the object. That will point to the "address point" within the 198 // vtable (not the beginning of the vtable.) We can then look up the symbol 199 // containing this "address point" and that symbol's name demangled will 200 // contain the full class name. The second pointer above the "address point" 201 // is the "offset_to_top". We'll use that to get the start of the value 202 // object which holds the dynamic type. 203 // 204 205 class_type_or_name.Clear(); 206 value_type = Value::ValueType::eValueTypeScalar; 207 208 // Only a pointer or reference type can have a different dynamic and static 209 // type: 210 if (!CouldHaveDynamicValue(in_value)) 211 return false; 212 213 // First job, pull out the address at 0 offset from the object. 214 AddressType address_type; 215 lldb::addr_t original_ptr = in_value.GetPointerValue(&address_type); 216 if (original_ptr == LLDB_INVALID_ADDRESS) 217 return false; 218 219 ExecutionContext exe_ctx(in_value.GetExecutionContextRef()); 220 221 Process *process = exe_ctx.GetProcessPtr(); 222 223 if (process == nullptr) 224 return false; 225 226 Status error; 227 const lldb::addr_t vtable_address_point = 228 process->ReadPointerFromMemory(original_ptr, error); 229 230 if (!error.Success() || vtable_address_point == LLDB_INVALID_ADDRESS) 231 return false; 232 233 class_type_or_name = GetTypeInfoFromVTableAddress(in_value, original_ptr, 234 vtable_address_point); 235 236 if (!class_type_or_name) 237 return false; 238 239 TypeSP type_sp = class_type_or_name.GetTypeSP(); 240 // There can only be one type with a given name, so we've just found 241 // duplicate definitions, and this one will do as well as any other. We 242 // don't consider something to have a dynamic type if it is the same as 243 // the static type. So compare against the value we were handed. 244 if (!type_sp) 245 return true; 246 247 if (ClangASTContext::AreTypesSame(in_value.GetCompilerType(), 248 type_sp->GetForwardCompilerType())) { 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 == NULL) 312 return false; 313 314 // Can we maybe ask Clang about this? 315 return strstr(name, "_vptr$") == name; 316 } 317 318 //------------------------------------------------------------------ 319 // Static Functions 320 //------------------------------------------------------------------ 321 LanguageRuntime * 322 ItaniumABILanguageRuntime::CreateInstance(Process *process, 323 lldb::LanguageType language) { 324 // FIXME: We have to check the process and make sure we actually know that 325 // this process supports 326 // the Itanium ABI. 327 if (language == eLanguageTypeC_plus_plus || 328 language == eLanguageTypeC_plus_plus_03 || 329 language == eLanguageTypeC_plus_plus_11 || 330 language == eLanguageTypeC_plus_plus_14) 331 return new ItaniumABILanguageRuntime(process); 332 else 333 return NULL; 334 } 335 336 class CommandObjectMultiwordItaniumABI_Demangle : public CommandObjectParsed { 337 public: 338 CommandObjectMultiwordItaniumABI_Demangle(CommandInterpreter &interpreter) 339 : CommandObjectParsed(interpreter, "demangle", 340 "Demangle a C++ mangled name.", 341 "language cplusplus demangle") { 342 CommandArgumentEntry arg; 343 CommandArgumentData index_arg; 344 345 // Define the first (and only) variant of this arg. 346 index_arg.arg_type = eArgTypeSymbol; 347 index_arg.arg_repetition = eArgRepeatPlus; 348 349 // There is only one variant this argument could be; put it into the 350 // argument entry. 351 arg.push_back(index_arg); 352 353 // Push the data for the first argument into the m_arguments vector. 354 m_arguments.push_back(arg); 355 } 356 357 ~CommandObjectMultiwordItaniumABI_Demangle() override = default; 358 359 protected: 360 bool DoExecute(Args &command, CommandReturnObject &result) override { 361 bool demangled_any = false; 362 bool error_any = false; 363 for (auto &entry : command.entries()) { 364 if (entry.ref.empty()) 365 continue; 366 367 // the actual Mangled class should be strict about this, but on the 368 // command line if you're copying mangled names out of 'nm' on Darwin, 369 // they will come out with an extra underscore - be willing to strip this 370 // on behalf of the user. This is the moral equivalent of the -_/-n 371 // options to c++filt 372 auto name = entry.ref; 373 if (name.startswith("__Z")) 374 name = name.drop_front(); 375 376 Mangled mangled(name, true); 377 if (mangled.GuessLanguage() == lldb::eLanguageTypeC_plus_plus) { 378 ConstString demangled( 379 mangled.GetDisplayDemangledName(lldb::eLanguageTypeC_plus_plus)); 380 demangled_any = true; 381 result.AppendMessageWithFormat("%s ---> %s\n", entry.ref.str().c_str(), 382 demangled.GetCString()); 383 } else { 384 error_any = true; 385 result.AppendErrorWithFormat("%s is not a valid C++ mangled name\n", 386 entry.ref.str().c_str()); 387 } 388 } 389 390 result.SetStatus( 391 error_any ? lldb::eReturnStatusFailed 392 : (demangled_any ? lldb::eReturnStatusSuccessFinishResult 393 : lldb::eReturnStatusSuccessFinishNoResult)); 394 return result.Succeeded(); 395 } 396 }; 397 398 class CommandObjectMultiwordItaniumABI : public CommandObjectMultiword { 399 public: 400 CommandObjectMultiwordItaniumABI(CommandInterpreter &interpreter) 401 : CommandObjectMultiword( 402 interpreter, "cplusplus", 403 "Commands for operating on the C++ language runtime.", 404 "cplusplus <subcommand> [<subcommand-options>]") { 405 LoadSubCommand( 406 "demangle", 407 CommandObjectSP( 408 new CommandObjectMultiwordItaniumABI_Demangle(interpreter))); 409 } 410 411 ~CommandObjectMultiwordItaniumABI() override = default; 412 }; 413 414 void ItaniumABILanguageRuntime::Initialize() { 415 PluginManager::RegisterPlugin( 416 GetPluginNameStatic(), "Itanium ABI for the C++ language", CreateInstance, 417 [](CommandInterpreter &interpreter) -> lldb::CommandObjectSP { 418 return CommandObjectSP( 419 new CommandObjectMultiwordItaniumABI(interpreter)); 420 }); 421 } 422 423 void ItaniumABILanguageRuntime::Terminate() { 424 PluginManager::UnregisterPlugin(CreateInstance); 425 } 426 427 lldb_private::ConstString ItaniumABILanguageRuntime::GetPluginNameStatic() { 428 static ConstString g_name("itanium"); 429 return g_name; 430 } 431 432 //------------------------------------------------------------------ 433 // PluginInterface protocol 434 //------------------------------------------------------------------ 435 lldb_private::ConstString ItaniumABILanguageRuntime::GetPluginName() { 436 return GetPluginNameStatic(); 437 } 438 439 uint32_t ItaniumABILanguageRuntime::GetPluginVersion() { return 1; } 440 441 BreakpointResolverSP ItaniumABILanguageRuntime::CreateExceptionResolver( 442 Breakpoint *bkpt, bool catch_bp, bool throw_bp) { 443 return CreateExceptionResolver(bkpt, catch_bp, throw_bp, false); 444 } 445 446 BreakpointResolverSP ItaniumABILanguageRuntime::CreateExceptionResolver( 447 Breakpoint *bkpt, bool catch_bp, bool throw_bp, bool for_expressions) { 448 // One complication here is that most users DON'T want to stop at 449 // __cxa_allocate_expression, but until we can do anything better with 450 // predicting unwinding the expression parser does. So we have two forms of 451 // the exception breakpoints, one for expressions that leaves out 452 // __cxa_allocate_exception, and one that includes it. The 453 // SetExceptionBreakpoints does the latter, the CreateExceptionBreakpoint in 454 // the runtime the former. 455 static const char *g_catch_name = "__cxa_begin_catch"; 456 static const char *g_throw_name1 = "__cxa_throw"; 457 static const char *g_throw_name2 = "__cxa_rethrow"; 458 static const char *g_exception_throw_name = "__cxa_allocate_exception"; 459 std::vector<const char *> exception_names; 460 exception_names.reserve(4); 461 if (catch_bp) 462 exception_names.push_back(g_catch_name); 463 464 if (throw_bp) { 465 exception_names.push_back(g_throw_name1); 466 exception_names.push_back(g_throw_name2); 467 } 468 469 if (for_expressions) 470 exception_names.push_back(g_exception_throw_name); 471 472 BreakpointResolverSP resolver_sp(new BreakpointResolverName( 473 bkpt, exception_names.data(), exception_names.size(), 474 eFunctionNameTypeBase, eLanguageTypeUnknown, 0, eLazyBoolNo)); 475 476 return resolver_sp; 477 } 478 479 lldb::SearchFilterSP ItaniumABILanguageRuntime::CreateExceptionSearchFilter() { 480 Target &target = m_process->GetTarget(); 481 482 if (target.GetArchitecture().GetTriple().getVendor() == llvm::Triple::Apple) { 483 // Limit the number of modules that are searched for these breakpoints for 484 // Apple binaries. 485 FileSpecList filter_modules; 486 filter_modules.Append(FileSpec("libc++abi.dylib")); 487 filter_modules.Append(FileSpec("libSystem.B.dylib")); 488 return target.GetSearchFilterForModuleList(&filter_modules); 489 } else { 490 return LanguageRuntime::CreateExceptionSearchFilter(); 491 } 492 } 493 494 lldb::BreakpointSP ItaniumABILanguageRuntime::CreateExceptionBreakpoint( 495 bool catch_bp, bool throw_bp, bool for_expressions, bool is_internal) { 496 Target &target = m_process->GetTarget(); 497 FileSpecList filter_modules; 498 BreakpointResolverSP exception_resolver_sp = 499 CreateExceptionResolver(NULL, catch_bp, throw_bp, for_expressions); 500 SearchFilterSP filter_sp(CreateExceptionSearchFilter()); 501 const bool hardware = false; 502 const bool resolve_indirect_functions = false; 503 return target.CreateBreakpoint(filter_sp, exception_resolver_sp, is_internal, 504 hardware, resolve_indirect_functions); 505 } 506 507 void ItaniumABILanguageRuntime::SetExceptionBreakpoints() { 508 if (!m_process) 509 return; 510 511 const bool catch_bp = false; 512 const bool throw_bp = true; 513 const bool is_internal = true; 514 const bool for_expressions = true; 515 516 // For the exception breakpoints set by the Expression parser, we'll be a 517 // little more aggressive and stop at exception allocation as well. 518 519 if (m_cxx_exception_bp_sp) { 520 m_cxx_exception_bp_sp->SetEnabled(true); 521 } else { 522 m_cxx_exception_bp_sp = CreateExceptionBreakpoint( 523 catch_bp, throw_bp, for_expressions, is_internal); 524 if (m_cxx_exception_bp_sp) 525 m_cxx_exception_bp_sp->SetBreakpointKind("c++ exception"); 526 } 527 } 528 529 void ItaniumABILanguageRuntime::ClearExceptionBreakpoints() { 530 if (!m_process) 531 return; 532 533 if (m_cxx_exception_bp_sp) { 534 m_cxx_exception_bp_sp->SetEnabled(false); 535 } 536 } 537 538 bool ItaniumABILanguageRuntime::ExceptionBreakpointsAreSet() { 539 return m_cxx_exception_bp_sp && m_cxx_exception_bp_sp->IsEnabled(); 540 } 541 542 bool ItaniumABILanguageRuntime::ExceptionBreakpointsExplainStop( 543 lldb::StopInfoSP stop_reason) { 544 if (!m_process) 545 return false; 546 547 if (!stop_reason || stop_reason->GetStopReason() != eStopReasonBreakpoint) 548 return false; 549 550 uint64_t break_site_id = stop_reason->GetValue(); 551 return m_process->GetBreakpointSiteList().BreakpointSiteContainsBreakpoint( 552 break_site_id, m_cxx_exception_bp_sp->GetID()); 553 } 554 555 ValueObjectSP ItaniumABILanguageRuntime::GetExceptionObjectForThread( 556 ThreadSP thread_sp) { 557 if (!thread_sp->SafeToCallFunctions()) 558 return {}; 559 560 ClangASTContext *clang_ast_context = 561 m_process->GetTarget().GetScratchClangASTContext(); 562 CompilerType voidstar = 563 clang_ast_context->GetBasicType(eBasicTypeVoid).GetPointerType(); 564 565 DiagnosticManager diagnostics; 566 ExecutionContext exe_ctx; 567 EvaluateExpressionOptions options; 568 569 options.SetUnwindOnError(true); 570 options.SetIgnoreBreakpoints(true); 571 options.SetStopOthers(true); 572 options.SetTimeout(std::chrono::milliseconds(500)); 573 options.SetTryAllThreads(false); 574 thread_sp->CalculateExecutionContext(exe_ctx); 575 576 const ModuleList &modules = m_process->GetTarget().GetImages(); 577 SymbolContextList contexts; 578 SymbolContext context; 579 580 modules.FindSymbolsWithNameAndType( 581 ConstString("__cxa_current_exception_type"), eSymbolTypeCode, contexts); 582 contexts.GetContextAtIndex(0, context); 583 Address addr = context.symbol->GetAddress(); 584 585 Status error; 586 FunctionCaller *function_caller = 587 m_process->GetTarget().GetFunctionCallerForLanguage( 588 eLanguageTypeC, voidstar, addr, ValueList(), "caller", error); 589 590 ExpressionResults func_call_ret; 591 Value results; 592 func_call_ret = function_caller->ExecuteFunction(exe_ctx, nullptr, options, 593 diagnostics, results); 594 if (func_call_ret != eExpressionCompleted || !error.Success()) { 595 return ValueObjectSP(); 596 } 597 598 size_t ptr_size = m_process->GetAddressByteSize(); 599 addr_t result_ptr = results.GetScalar().ULongLong(LLDB_INVALID_ADDRESS); 600 addr_t exception_addr = 601 m_process->ReadPointerFromMemory(result_ptr - ptr_size, error); 602 603 lldb_private::formatters::InferiorSizedWord exception_isw(exception_addr, 604 *m_process); 605 ValueObjectSP exception = ValueObject::CreateValueObjectFromData( 606 "exception", exception_isw.GetAsData(m_process->GetByteOrder()), exe_ctx, 607 voidstar); 608 exception = exception->GetDynamicValue(eDynamicDontRunTarget); 609 610 return exception; 611 } 612 613 TypeAndOrName ItaniumABILanguageRuntime::GetDynamicTypeInfo( 614 const lldb_private::Address &vtable_addr) { 615 std::lock_guard<std::mutex> locker(m_dynamic_type_map_mutex); 616 DynamicTypeCache::const_iterator pos = m_dynamic_type_map.find(vtable_addr); 617 if (pos == m_dynamic_type_map.end()) 618 return TypeAndOrName(); 619 else 620 return pos->second; 621 } 622 623 void ItaniumABILanguageRuntime::SetDynamicTypeInfo( 624 const lldb_private::Address &vtable_addr, const TypeAndOrName &type_info) { 625 std::lock_guard<std::mutex> locker(m_dynamic_type_map_mutex); 626 m_dynamic_type_map[vtable_addr] = type_info; 627 } 628