1 //===-- ObjectFile.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 "lldb/Symbol/ObjectFile.h" 10 #include "lldb/Core/Module.h" 11 #include "lldb/Core/ModuleSpec.h" 12 #include "lldb/Core/PluginManager.h" 13 #include "lldb/Core/Section.h" 14 #include "lldb/Symbol/ObjectContainer.h" 15 #include "lldb/Symbol/SymbolFile.h" 16 #include "lldb/Target/Process.h" 17 #include "lldb/Target/SectionLoadList.h" 18 #include "lldb/Target/Target.h" 19 #include "lldb/Utility/DataBuffer.h" 20 #include "lldb/Utility/DataBufferHeap.h" 21 #include "lldb/Utility/Log.h" 22 #include "lldb/Utility/RegularExpression.h" 23 #include "lldb/Utility/Timer.h" 24 #include "lldb/lldb-private.h" 25 26 using namespace lldb; 27 using namespace lldb_private; 28 29 ObjectFileSP 30 ObjectFile::FindPlugin(const lldb::ModuleSP &module_sp, const FileSpec *file, 31 lldb::offset_t file_offset, lldb::offset_t file_size, 32 DataBufferSP &data_sp, lldb::offset_t &data_offset) { 33 ObjectFileSP object_file_sp; 34 35 if (module_sp) { 36 static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 37 Timer scoped_timer( 38 func_cat, 39 "ObjectFile::FindPlugin (module = %s, file = %p, file_offset = " 40 "0x%8.8" PRIx64 ", file_size = 0x%8.8" PRIx64 ")", 41 module_sp->GetFileSpec().GetPath().c_str(), 42 static_cast<const void *>(file), static_cast<uint64_t>(file_offset), 43 static_cast<uint64_t>(file_size)); 44 if (file) { 45 FileSpec archive_file; 46 ObjectContainerCreateInstance create_object_container_callback; 47 48 const bool file_exists = FileSystem::Instance().Exists(*file); 49 if (!data_sp) { 50 // We have an object name which most likely means we have a .o file in 51 // a static archive (.a file). Try and see if we have a cached archive 52 // first without reading any data first 53 if (file_exists && module_sp->GetObjectName()) { 54 for (uint32_t idx = 0; 55 (create_object_container_callback = 56 PluginManager::GetObjectContainerCreateCallbackAtIndex( 57 idx)) != nullptr; 58 ++idx) { 59 std::unique_ptr<ObjectContainer> object_container_ap( 60 create_object_container_callback(module_sp, data_sp, 61 data_offset, file, file_offset, 62 file_size)); 63 64 if (object_container_ap.get()) 65 object_file_sp = object_container_ap->GetObjectFile(file); 66 67 if (object_file_sp.get()) 68 return object_file_sp; 69 } 70 } 71 // Ok, we didn't find any containers that have a named object, now lets 72 // read the first 512 bytes from the file so the object file and object 73 // container plug-ins can use these bytes to see if they can parse this 74 // file. 75 if (file_size > 0) { 76 data_sp = FileSystem::Instance().CreateDataBuffer(file->GetPath(), 77 512, file_offset); 78 data_offset = 0; 79 } 80 } 81 82 if (!data_sp || data_sp->GetByteSize() == 0) { 83 // Check for archive file with format "/path/to/archive.a(object.o)" 84 char path_with_object[PATH_MAX * 2]; 85 module_sp->GetFileSpec().GetPath(path_with_object, 86 sizeof(path_with_object)); 87 88 ConstString archive_object; 89 const bool must_exist = true; 90 if (ObjectFile::SplitArchivePathWithObject( 91 path_with_object, archive_file, archive_object, must_exist)) { 92 file_size = FileSystem::Instance().GetByteSize(archive_file); 93 if (file_size > 0) { 94 file = &archive_file; 95 module_sp->SetFileSpecAndObjectName(archive_file, archive_object); 96 // Check if this is a object container by iterating through all 97 // object container plugin instances and then trying to get an 98 // object file from the container plugins since we had a name. 99 // Also, don't read 100 // ANY data in case there is data cached in the container plug-ins 101 // (like BSD archives caching the contained objects within an 102 // file). 103 for (uint32_t idx = 0; 104 (create_object_container_callback = 105 PluginManager::GetObjectContainerCreateCallbackAtIndex( 106 idx)) != nullptr; 107 ++idx) { 108 std::unique_ptr<ObjectContainer> object_container_ap( 109 create_object_container_callback(module_sp, data_sp, 110 data_offset, file, 111 file_offset, file_size)); 112 113 if (object_container_ap.get()) 114 object_file_sp = object_container_ap->GetObjectFile(file); 115 116 if (object_file_sp.get()) 117 return object_file_sp; 118 } 119 // We failed to find any cached object files in the container plug- 120 // ins, so lets read the first 512 bytes and try again below... 121 data_sp = FileSystem::Instance().CreateDataBuffer( 122 archive_file.GetPath(), 512, file_offset); 123 } 124 } 125 } 126 127 if (data_sp && data_sp->GetByteSize() > 0) { 128 // Check if this is a normal object file by iterating through all 129 // object file plugin instances. 130 ObjectFileCreateInstance create_object_file_callback; 131 for (uint32_t idx = 0; 132 (create_object_file_callback = 133 PluginManager::GetObjectFileCreateCallbackAtIndex(idx)) != 134 nullptr; 135 ++idx) { 136 object_file_sp.reset(create_object_file_callback( 137 module_sp, data_sp, data_offset, file, file_offset, file_size)); 138 if (object_file_sp.get()) 139 return object_file_sp; 140 } 141 142 // Check if this is a object container by iterating through all object 143 // container plugin instances and then trying to get an object file 144 // from the container. 145 for (uint32_t idx = 0; 146 (create_object_container_callback = 147 PluginManager::GetObjectContainerCreateCallbackAtIndex( 148 idx)) != nullptr; 149 ++idx) { 150 std::unique_ptr<ObjectContainer> object_container_ap( 151 create_object_container_callback(module_sp, data_sp, data_offset, 152 file, file_offset, file_size)); 153 154 if (object_container_ap.get()) 155 object_file_sp = object_container_ap->GetObjectFile(file); 156 157 if (object_file_sp.get()) 158 return object_file_sp; 159 } 160 } 161 } 162 } 163 // We didn't find it, so clear our shared pointer in case it contains 164 // anything and return an empty shared pointer 165 object_file_sp.reset(); 166 return object_file_sp; 167 } 168 169 ObjectFileSP ObjectFile::FindPlugin(const lldb::ModuleSP &module_sp, 170 const ProcessSP &process_sp, 171 lldb::addr_t header_addr, 172 DataBufferSP &data_sp) { 173 ObjectFileSP object_file_sp; 174 175 if (module_sp) { 176 static Timer::Category func_cat(LLVM_PRETTY_FUNCTION); 177 Timer scoped_timer(func_cat, 178 "ObjectFile::FindPlugin (module = " 179 "%s, process = %p, header_addr = " 180 "0x%" PRIx64 ")", 181 module_sp->GetFileSpec().GetPath().c_str(), 182 static_cast<void *>(process_sp.get()), header_addr); 183 uint32_t idx; 184 185 // Check if this is a normal object file by iterating through all object 186 // file plugin instances. 187 ObjectFileCreateMemoryInstance create_callback; 188 for (idx = 0; 189 (create_callback = 190 PluginManager::GetObjectFileCreateMemoryCallbackAtIndex(idx)) != 191 nullptr; 192 ++idx) { 193 object_file_sp.reset( 194 create_callback(module_sp, data_sp, process_sp, header_addr)); 195 if (object_file_sp.get()) 196 return object_file_sp; 197 } 198 } 199 200 // We didn't find it, so clear our shared pointer in case it contains 201 // anything and return an empty shared pointer 202 object_file_sp.reset(); 203 return object_file_sp; 204 } 205 206 size_t ObjectFile::GetModuleSpecifications(const FileSpec &file, 207 lldb::offset_t file_offset, 208 lldb::offset_t file_size, 209 ModuleSpecList &specs) { 210 DataBufferSP data_sp = 211 FileSystem::Instance().CreateDataBuffer(file.GetPath(), 512, file_offset); 212 if (data_sp) { 213 if (file_size == 0) { 214 const lldb::offset_t actual_file_size = 215 FileSystem::Instance().GetByteSize(file); 216 if (actual_file_size > file_offset) 217 file_size = actual_file_size - file_offset; 218 } 219 return ObjectFile::GetModuleSpecifications(file, // file spec 220 data_sp, // data bytes 221 0, // data offset 222 file_offset, // file offset 223 file_size, // file length 224 specs); 225 } 226 return 0; 227 } 228 229 size_t ObjectFile::GetModuleSpecifications( 230 const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp, 231 lldb::offset_t data_offset, lldb::offset_t file_offset, 232 lldb::offset_t file_size, lldb_private::ModuleSpecList &specs) { 233 const size_t initial_count = specs.GetSize(); 234 ObjectFileGetModuleSpecifications callback; 235 uint32_t i; 236 // Try the ObjectFile plug-ins 237 for (i = 0; 238 (callback = 239 PluginManager::GetObjectFileGetModuleSpecificationsCallbackAtIndex( 240 i)) != nullptr; 241 ++i) { 242 if (callback(file, data_sp, data_offset, file_offset, file_size, specs) > 0) 243 return specs.GetSize() - initial_count; 244 } 245 246 // Try the ObjectContainer plug-ins 247 for (i = 0; 248 (callback = PluginManager:: 249 GetObjectContainerGetModuleSpecificationsCallbackAtIndex(i)) != 250 nullptr; 251 ++i) { 252 if (callback(file, data_sp, data_offset, file_offset, file_size, specs) > 0) 253 return specs.GetSize() - initial_count; 254 } 255 return 0; 256 } 257 258 ObjectFile::ObjectFile(const lldb::ModuleSP &module_sp, 259 const FileSpec *file_spec_ptr, 260 lldb::offset_t file_offset, lldb::offset_t length, 261 const lldb::DataBufferSP &data_sp, 262 lldb::offset_t data_offset) 263 : ModuleChild(module_sp), 264 m_file(), // This file could be different from the original module's file 265 m_type(eTypeInvalid), m_strata(eStrataInvalid), 266 m_file_offset(file_offset), m_length(length), m_data(), 267 m_unwind_table(*this), m_process_wp(), 268 m_memory_addr(LLDB_INVALID_ADDRESS), m_sections_ap(), m_symtab_ap(), 269 m_synthetic_symbol_idx(0) { 270 if (file_spec_ptr) 271 m_file = *file_spec_ptr; 272 if (data_sp) 273 m_data.SetData(data_sp, data_offset, length); 274 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 275 if (log) 276 log->Printf("%p ObjectFile::ObjectFile() module = %p (%s), file = %s, " 277 "file_offset = 0x%8.8" PRIx64 ", size = %" PRIu64, 278 static_cast<void *>(this), static_cast<void *>(module_sp.get()), 279 module_sp->GetSpecificationDescription().c_str(), 280 m_file ? m_file.GetPath().c_str() : "<NULL>", m_file_offset, 281 m_length); 282 } 283 284 ObjectFile::ObjectFile(const lldb::ModuleSP &module_sp, 285 const ProcessSP &process_sp, lldb::addr_t header_addr, 286 DataBufferSP &header_data_sp) 287 : ModuleChild(module_sp), m_file(), m_type(eTypeInvalid), 288 m_strata(eStrataInvalid), m_file_offset(0), m_length(0), m_data(), 289 m_unwind_table(*this), m_process_wp(process_sp), 290 m_memory_addr(header_addr), m_sections_ap(), m_symtab_ap(), 291 m_synthetic_symbol_idx(0) { 292 if (header_data_sp) 293 m_data.SetData(header_data_sp, 0, header_data_sp->GetByteSize()); 294 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 295 if (log) 296 log->Printf("%p ObjectFile::ObjectFile() module = %p (%s), process = %p, " 297 "header_addr = 0x%" PRIx64, 298 static_cast<void *>(this), static_cast<void *>(module_sp.get()), 299 module_sp->GetSpecificationDescription().c_str(), 300 static_cast<void *>(process_sp.get()), m_memory_addr); 301 } 302 303 ObjectFile::~ObjectFile() { 304 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 305 if (log) 306 log->Printf("%p ObjectFile::~ObjectFile ()\n", static_cast<void *>(this)); 307 } 308 309 bool ObjectFile::SetModulesArchitecture(const ArchSpec &new_arch) { 310 ModuleSP module_sp(GetModule()); 311 if (module_sp) 312 return module_sp->SetArchitecture(new_arch); 313 return false; 314 } 315 316 AddressClass ObjectFile::GetAddressClass(addr_t file_addr) { 317 Symtab *symtab = GetSymtab(); 318 if (symtab) { 319 Symbol *symbol = symtab->FindSymbolContainingFileAddress(file_addr); 320 if (symbol) { 321 if (symbol->ValueIsAddress()) { 322 const SectionSP section_sp(symbol->GetAddressRef().GetSection()); 323 if (section_sp) { 324 const SectionType section_type = section_sp->GetType(); 325 switch (section_type) { 326 case eSectionTypeInvalid: 327 return AddressClass::eUnknown; 328 case eSectionTypeCode: 329 return AddressClass::eCode; 330 case eSectionTypeContainer: 331 return AddressClass::eUnknown; 332 case eSectionTypeData: 333 case eSectionTypeDataCString: 334 case eSectionTypeDataCStringPointers: 335 case eSectionTypeDataSymbolAddress: 336 case eSectionTypeData4: 337 case eSectionTypeData8: 338 case eSectionTypeData16: 339 case eSectionTypeDataPointers: 340 case eSectionTypeZeroFill: 341 case eSectionTypeDataObjCMessageRefs: 342 case eSectionTypeDataObjCCFStrings: 343 case eSectionTypeGoSymtab: 344 return AddressClass::eData; 345 case eSectionTypeDebug: 346 case eSectionTypeDWARFDebugAbbrev: 347 case eSectionTypeDWARFDebugAbbrevDwo: 348 case eSectionTypeDWARFDebugAddr: 349 case eSectionTypeDWARFDebugAranges: 350 case eSectionTypeDWARFDebugCuIndex: 351 case eSectionTypeDWARFDebugFrame: 352 case eSectionTypeDWARFDebugInfo: 353 case eSectionTypeDWARFDebugInfoDwo: 354 case eSectionTypeDWARFDebugLine: 355 case eSectionTypeDWARFDebugLineStr: 356 case eSectionTypeDWARFDebugLoc: 357 case eSectionTypeDWARFDebugLocLists: 358 case eSectionTypeDWARFDebugMacInfo: 359 case eSectionTypeDWARFDebugMacro: 360 case eSectionTypeDWARFDebugNames: 361 case eSectionTypeDWARFDebugPubNames: 362 case eSectionTypeDWARFDebugPubTypes: 363 case eSectionTypeDWARFDebugRanges: 364 case eSectionTypeDWARFDebugRngLists: 365 case eSectionTypeDWARFDebugStr: 366 case eSectionTypeDWARFDebugStrDwo: 367 case eSectionTypeDWARFDebugStrOffsets: 368 case eSectionTypeDWARFDebugStrOffsetsDwo: 369 case eSectionTypeDWARFDebugTypes: 370 case eSectionTypeDWARFAppleNames: 371 case eSectionTypeDWARFAppleTypes: 372 case eSectionTypeDWARFAppleNamespaces: 373 case eSectionTypeDWARFAppleObjC: 374 case eSectionTypeDWARFGNUDebugAltLink: 375 return AddressClass::eDebug; 376 case eSectionTypeEHFrame: 377 case eSectionTypeARMexidx: 378 case eSectionTypeARMextab: 379 case eSectionTypeCompactUnwind: 380 return AddressClass::eRuntime; 381 case eSectionTypeELFSymbolTable: 382 case eSectionTypeELFDynamicSymbols: 383 case eSectionTypeELFRelocationEntries: 384 case eSectionTypeELFDynamicLinkInfo: 385 case eSectionTypeOther: 386 return AddressClass::eUnknown; 387 case eSectionTypeAbsoluteAddress: 388 // In case of absolute sections decide the address class based on 389 // the symbol type because the section type isn't specify if it is 390 // a code or a data section. 391 break; 392 } 393 } 394 } 395 396 const SymbolType symbol_type = symbol->GetType(); 397 switch (symbol_type) { 398 case eSymbolTypeAny: 399 return AddressClass::eUnknown; 400 case eSymbolTypeAbsolute: 401 return AddressClass::eUnknown; 402 case eSymbolTypeCode: 403 return AddressClass::eCode; 404 case eSymbolTypeTrampoline: 405 return AddressClass::eCode; 406 case eSymbolTypeResolver: 407 return AddressClass::eCode; 408 case eSymbolTypeData: 409 return AddressClass::eData; 410 case eSymbolTypeRuntime: 411 return AddressClass::eRuntime; 412 case eSymbolTypeException: 413 return AddressClass::eRuntime; 414 case eSymbolTypeSourceFile: 415 return AddressClass::eDebug; 416 case eSymbolTypeHeaderFile: 417 return AddressClass::eDebug; 418 case eSymbolTypeObjectFile: 419 return AddressClass::eDebug; 420 case eSymbolTypeCommonBlock: 421 return AddressClass::eDebug; 422 case eSymbolTypeBlock: 423 return AddressClass::eDebug; 424 case eSymbolTypeLocal: 425 return AddressClass::eData; 426 case eSymbolTypeParam: 427 return AddressClass::eData; 428 case eSymbolTypeVariable: 429 return AddressClass::eData; 430 case eSymbolTypeVariableType: 431 return AddressClass::eDebug; 432 case eSymbolTypeLineEntry: 433 return AddressClass::eDebug; 434 case eSymbolTypeLineHeader: 435 return AddressClass::eDebug; 436 case eSymbolTypeScopeBegin: 437 return AddressClass::eDebug; 438 case eSymbolTypeScopeEnd: 439 return AddressClass::eDebug; 440 case eSymbolTypeAdditional: 441 return AddressClass::eUnknown; 442 case eSymbolTypeCompiler: 443 return AddressClass::eDebug; 444 case eSymbolTypeInstrumentation: 445 return AddressClass::eDebug; 446 case eSymbolTypeUndefined: 447 return AddressClass::eUnknown; 448 case eSymbolTypeObjCClass: 449 return AddressClass::eRuntime; 450 case eSymbolTypeObjCMetaClass: 451 return AddressClass::eRuntime; 452 case eSymbolTypeObjCIVar: 453 return AddressClass::eRuntime; 454 case eSymbolTypeReExported: 455 return AddressClass::eRuntime; 456 } 457 } 458 } 459 return AddressClass::eUnknown; 460 } 461 462 DataBufferSP ObjectFile::ReadMemory(const ProcessSP &process_sp, 463 lldb::addr_t addr, size_t byte_size) { 464 DataBufferSP data_sp; 465 if (process_sp) { 466 std::unique_ptr<DataBufferHeap> data_ap(new DataBufferHeap(byte_size, 0)); 467 Status error; 468 const size_t bytes_read = process_sp->ReadMemory( 469 addr, data_ap->GetBytes(), data_ap->GetByteSize(), error); 470 if (bytes_read == byte_size) 471 data_sp.reset(data_ap.release()); 472 } 473 return data_sp; 474 } 475 476 size_t ObjectFile::GetData(lldb::offset_t offset, size_t length, 477 DataExtractor &data) const { 478 // The entire file has already been mmap'ed into m_data, so just copy from 479 // there as the back mmap buffer will be shared with shared pointers. 480 return data.SetData(m_data, offset, length); 481 } 482 483 size_t ObjectFile::CopyData(lldb::offset_t offset, size_t length, 484 void *dst) const { 485 // The entire file has already been mmap'ed into m_data, so just copy from 486 // there Note that the data remains in target byte order. 487 return m_data.CopyData(offset, length, dst); 488 } 489 490 size_t ObjectFile::ReadSectionData(Section *section, 491 lldb::offset_t section_offset, void *dst, 492 size_t dst_len) { 493 assert(section); 494 section_offset *= section->GetTargetByteSize(); 495 496 // If some other objectfile owns this data, pass this to them. 497 if (section->GetObjectFile() != this) 498 return section->GetObjectFile()->ReadSectionData(section, section_offset, 499 dst, dst_len); 500 501 if (IsInMemory()) { 502 ProcessSP process_sp(m_process_wp.lock()); 503 if (process_sp) { 504 Status error; 505 const addr_t base_load_addr = 506 section->GetLoadBaseAddress(&process_sp->GetTarget()); 507 if (base_load_addr != LLDB_INVALID_ADDRESS) 508 return process_sp->ReadMemory(base_load_addr + section_offset, dst, 509 dst_len, error); 510 } 511 } else { 512 if (!section->IsRelocated()) 513 RelocateSection(section); 514 515 const lldb::offset_t section_file_size = section->GetFileSize(); 516 if (section_offset < section_file_size) { 517 const size_t section_bytes_left = section_file_size - section_offset; 518 size_t section_dst_len = dst_len; 519 if (section_dst_len > section_bytes_left) 520 section_dst_len = section_bytes_left; 521 return CopyData(section->GetFileOffset() + section_offset, 522 section_dst_len, dst); 523 } else { 524 if (section->GetType() == eSectionTypeZeroFill) { 525 const uint64_t section_size = section->GetByteSize(); 526 const uint64_t section_bytes_left = section_size - section_offset; 527 uint64_t section_dst_len = dst_len; 528 if (section_dst_len > section_bytes_left) 529 section_dst_len = section_bytes_left; 530 memset(dst, 0, section_dst_len); 531 return section_dst_len; 532 } 533 } 534 } 535 return 0; 536 } 537 538 //---------------------------------------------------------------------- 539 // Get the section data the file on disk 540 //---------------------------------------------------------------------- 541 size_t ObjectFile::ReadSectionData(Section *section, 542 DataExtractor §ion_data) { 543 // If some other objectfile owns this data, pass this to them. 544 if (section->GetObjectFile() != this) 545 return section->GetObjectFile()->ReadSectionData(section, section_data); 546 547 if (IsInMemory()) { 548 ProcessSP process_sp(m_process_wp.lock()); 549 if (process_sp) { 550 const addr_t base_load_addr = 551 section->GetLoadBaseAddress(&process_sp->GetTarget()); 552 if (base_load_addr != LLDB_INVALID_ADDRESS) { 553 DataBufferSP data_sp( 554 ReadMemory(process_sp, base_load_addr, section->GetByteSize())); 555 if (data_sp) { 556 section_data.SetData(data_sp, 0, data_sp->GetByteSize()); 557 section_data.SetByteOrder(process_sp->GetByteOrder()); 558 section_data.SetAddressByteSize(process_sp->GetAddressByteSize()); 559 return section_data.GetByteSize(); 560 } 561 } 562 } 563 return GetData(section->GetFileOffset(), section->GetFileSize(), 564 section_data); 565 } else { 566 // The object file now contains a full mmap'ed copy of the object file 567 // data, so just use this 568 if (!section->IsRelocated()) 569 RelocateSection(section); 570 571 return GetData(section->GetFileOffset(), section->GetFileSize(), 572 section_data); 573 } 574 } 575 576 bool ObjectFile::SplitArchivePathWithObject(const char *path_with_object, 577 FileSpec &archive_file, 578 ConstString &archive_object, 579 bool must_exist) { 580 RegularExpression g_object_regex(llvm::StringRef("(.*)\\(([^\\)]+)\\)$")); 581 RegularExpression::Match regex_match(2); 582 if (g_object_regex.Execute(llvm::StringRef::withNullAsEmpty(path_with_object), 583 ®ex_match)) { 584 std::string path; 585 std::string obj; 586 if (regex_match.GetMatchAtIndex(path_with_object, 1, path) && 587 regex_match.GetMatchAtIndex(path_with_object, 2, obj)) { 588 archive_file.SetFile(path, FileSpec::Style::native); 589 archive_object.SetCString(obj.c_str()); 590 return !(must_exist && !FileSystem::Instance().Exists(archive_file)); 591 } 592 } 593 return false; 594 } 595 596 void ObjectFile::ClearSymtab() { 597 ModuleSP module_sp(GetModule()); 598 if (module_sp) { 599 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 600 Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 601 if (log) 602 log->Printf("%p ObjectFile::ClearSymtab () symtab = %p", 603 static_cast<void *>(this), 604 static_cast<void *>(m_symtab_ap.get())); 605 m_symtab_ap.reset(); 606 } 607 } 608 609 SectionList *ObjectFile::GetSectionList(bool update_module_section_list) { 610 if (m_sections_ap.get() == nullptr) { 611 if (update_module_section_list) { 612 ModuleSP module_sp(GetModule()); 613 if (module_sp) { 614 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 615 CreateSections(*module_sp->GetUnifiedSectionList()); 616 } 617 } else { 618 SectionList unified_section_list; 619 CreateSections(unified_section_list); 620 } 621 } 622 return m_sections_ap.get(); 623 } 624 625 lldb::SymbolType 626 ObjectFile::GetSymbolTypeFromName(llvm::StringRef name, 627 lldb::SymbolType symbol_type_hint) { 628 if (!name.empty()) { 629 if (name.startswith("_OBJC_")) { 630 // ObjC 631 if (name.startswith("_OBJC_CLASS_$_")) 632 return lldb::eSymbolTypeObjCClass; 633 if (name.startswith("_OBJC_METACLASS_$_")) 634 return lldb::eSymbolTypeObjCMetaClass; 635 if (name.startswith("_OBJC_IVAR_$_")) 636 return lldb::eSymbolTypeObjCIVar; 637 } else if (name.startswith(".objc_class_name_")) { 638 // ObjC v1 639 return lldb::eSymbolTypeObjCClass; 640 } 641 } 642 return symbol_type_hint; 643 } 644 645 ConstString ObjectFile::GetNextSyntheticSymbolName() { 646 StreamString ss; 647 ConstString file_name = GetModule()->GetFileSpec().GetFilename(); 648 ss.Printf("___lldb_unnamed_symbol%u$$%s", ++m_synthetic_symbol_idx, 649 file_name.GetCString()); 650 return ConstString(ss.GetString()); 651 } 652 653 std::vector<ObjectFile::LoadableData> 654 ObjectFile::GetLoadableData(Target &target) { 655 std::vector<LoadableData> loadables; 656 SectionList *section_list = GetSectionList(); 657 if (!section_list) 658 return loadables; 659 // Create a list of loadable data from loadable sections 660 size_t section_count = section_list->GetNumSections(0); 661 for (size_t i = 0; i < section_count; ++i) { 662 LoadableData loadable; 663 SectionSP section_sp = section_list->GetSectionAtIndex(i); 664 loadable.Dest = 665 target.GetSectionLoadList().GetSectionLoadAddress(section_sp); 666 if (loadable.Dest == LLDB_INVALID_ADDRESS) 667 continue; 668 // We can skip sections like bss 669 if (section_sp->GetFileSize() == 0) 670 continue; 671 DataExtractor section_data; 672 section_sp->GetSectionData(section_data); 673 loadable.Contents = llvm::ArrayRef<uint8_t>(section_data.GetDataStart(), 674 section_data.GetByteSize()); 675 loadables.push_back(loadable); 676 } 677 return loadables; 678 } 679 680 void ObjectFile::RelocateSection(lldb_private::Section *section) 681 { 682 } 683 684 DataBufferSP ObjectFile::MapFileData(const FileSpec &file, uint64_t Size, 685 uint64_t Offset) { 686 return FileSystem::Instance().CreateDataBuffer(file.GetPath(), Size, Offset); 687 } 688 689 void llvm::format_provider<ObjectFile::Type>::format( 690 const ObjectFile::Type &type, raw_ostream &OS, StringRef Style) { 691 switch (type) { 692 case ObjectFile::eTypeInvalid: 693 OS << "invalid"; 694 break; 695 case ObjectFile::eTypeCoreFile: 696 OS << "core file"; 697 break; 698 case ObjectFile::eTypeExecutable: 699 OS << "executable"; 700 break; 701 case ObjectFile::eTypeDebugInfo: 702 OS << "debug info"; 703 break; 704 case ObjectFile::eTypeDynamicLinker: 705 OS << "dynamic linker"; 706 break; 707 case ObjectFile::eTypeObjectFile: 708 OS << "object file"; 709 break; 710 case ObjectFile::eTypeSharedLibrary: 711 OS << "shared library"; 712 break; 713 case ObjectFile::eTypeStubLibrary: 714 OS << "stub library"; 715 break; 716 case ObjectFile::eTypeJIT: 717 OS << "jit"; 718 break; 719 case ObjectFile::eTypeUnknown: 720 OS << "unknown"; 721 break; 722 } 723 } 724 725 void llvm::format_provider<ObjectFile::Strata>::format( 726 const ObjectFile::Strata &strata, raw_ostream &OS, StringRef Style) { 727 switch (strata) { 728 case ObjectFile::eStrataInvalid: 729 OS << "invalid"; 730 break; 731 case ObjectFile::eStrataUnknown: 732 OS << "unknown"; 733 break; 734 case ObjectFile::eStrataUser: 735 OS << "user"; 736 break; 737 case ObjectFile::eStrataKernel: 738 OS << "kernel"; 739 break; 740 case ObjectFile::eStrataRawImage: 741 OS << "raw image"; 742 break; 743 case ObjectFile::eStrataJIT: 744 OS << "jit"; 745 break; 746 } 747 } 748