1 //===-- ObjectFilePECOFF.cpp ----------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "ObjectFilePECOFF.h" 10 #include "PECallFrameInfo.h" 11 #include "WindowsMiniDump.h" 12 13 #include "lldb/Core/FileSpecList.h" 14 #include "lldb/Core/Module.h" 15 #include "lldb/Core/ModuleSpec.h" 16 #include "lldb/Core/PluginManager.h" 17 #include "lldb/Core/Section.h" 18 #include "lldb/Core/StreamFile.h" 19 #include "lldb/Symbol/ObjectFile.h" 20 #include "lldb/Target/Process.h" 21 #include "lldb/Target/SectionLoadList.h" 22 #include "lldb/Target/Target.h" 23 #include "lldb/Utility/ArchSpec.h" 24 #include "lldb/Utility/DataBufferHeap.h" 25 #include "lldb/Utility/FileSpec.h" 26 #include "lldb/Utility/Log.h" 27 #include "lldb/Utility/StreamString.h" 28 #include "lldb/Utility/Timer.h" 29 #include "lldb/Utility/UUID.h" 30 #include "llvm/BinaryFormat/COFF.h" 31 32 #include "llvm/Object/COFFImportFile.h" 33 #include "llvm/Support/Error.h" 34 #include "llvm/Support/MemoryBuffer.h" 35 36 #define IMAGE_DOS_SIGNATURE 0x5A4D // MZ 37 #define IMAGE_NT_SIGNATURE 0x00004550 // PE00 38 #define OPT_HEADER_MAGIC_PE32 0x010b 39 #define OPT_HEADER_MAGIC_PE32_PLUS 0x020b 40 41 using namespace lldb; 42 using namespace lldb_private; 43 44 LLDB_PLUGIN_DEFINE(ObjectFilePECOFF) 45 46 struct CVInfoPdb70 { 47 // 16-byte GUID 48 struct _Guid { 49 llvm::support::ulittle32_t Data1; 50 llvm::support::ulittle16_t Data2; 51 llvm::support::ulittle16_t Data3; 52 uint8_t Data4[8]; 53 } Guid; 54 55 llvm::support::ulittle32_t Age; 56 }; 57 58 static UUID GetCoffUUID(llvm::object::COFFObjectFile &coff_obj) { 59 const llvm::codeview::DebugInfo *pdb_info = nullptr; 60 llvm::StringRef pdb_file; 61 62 // This part is similar with what has done in minidump parser. 63 if (!coff_obj.getDebugPDBInfo(pdb_info, pdb_file) && pdb_info) { 64 if (pdb_info->PDB70.CVSignature == llvm::OMF::Signature::PDB70) { 65 using llvm::support::endian::read16be; 66 using llvm::support::endian::read32be; 67 68 const uint8_t *sig = pdb_info->PDB70.Signature; 69 struct CVInfoPdb70 info; 70 info.Guid.Data1 = read32be(sig); 71 sig += 4; 72 info.Guid.Data2 = read16be(sig); 73 sig += 2; 74 info.Guid.Data3 = read16be(sig); 75 sig += 2; 76 memcpy(info.Guid.Data4, sig, 8); 77 78 // Return 20-byte UUID if the Age is not zero 79 if (pdb_info->PDB70.Age) { 80 info.Age = read32be(&pdb_info->PDB70.Age); 81 return UUID::fromOptionalData(&info, sizeof(info)); 82 } 83 // Otherwise return 16-byte GUID 84 return UUID::fromOptionalData(&info.Guid, sizeof(info.Guid)); 85 } 86 } 87 88 return UUID(); 89 } 90 91 char ObjectFilePECOFF::ID; 92 93 void ObjectFilePECOFF::Initialize() { 94 PluginManager::RegisterPlugin( 95 GetPluginNameStatic(), GetPluginDescriptionStatic(), CreateInstance, 96 CreateMemoryInstance, GetModuleSpecifications, SaveCore); 97 } 98 99 void ObjectFilePECOFF::Terminate() { 100 PluginManager::UnregisterPlugin(CreateInstance); 101 } 102 103 lldb_private::ConstString ObjectFilePECOFF::GetPluginNameStatic() { 104 static ConstString g_name("pe-coff"); 105 return g_name; 106 } 107 108 const char *ObjectFilePECOFF::GetPluginDescriptionStatic() { 109 return "Portable Executable and Common Object File Format object file reader " 110 "(32 and 64 bit)"; 111 } 112 113 ObjectFile *ObjectFilePECOFF::CreateInstance(const lldb::ModuleSP &module_sp, 114 DataBufferSP &data_sp, 115 lldb::offset_t data_offset, 116 const lldb_private::FileSpec *file_p, 117 lldb::offset_t file_offset, 118 lldb::offset_t length) { 119 FileSpec file = file_p ? *file_p : FileSpec(); 120 if (!data_sp) { 121 data_sp = MapFileData(file, length, file_offset); 122 if (!data_sp) 123 return nullptr; 124 data_offset = 0; 125 } 126 127 if (!ObjectFilePECOFF::MagicBytesMatch(data_sp)) 128 return nullptr; 129 130 // Update the data to contain the entire file if it doesn't already 131 if (data_sp->GetByteSize() < length) { 132 data_sp = MapFileData(file, length, file_offset); 133 if (!data_sp) 134 return nullptr; 135 } 136 137 auto objfile_up = std::make_unique<ObjectFilePECOFF>( 138 module_sp, data_sp, data_offset, file_p, file_offset, length); 139 if (!objfile_up || !objfile_up->ParseHeader()) 140 return nullptr; 141 142 // Cache coff binary. 143 if (!objfile_up->CreateBinary()) 144 return nullptr; 145 146 return objfile_up.release(); 147 } 148 149 ObjectFile *ObjectFilePECOFF::CreateMemoryInstance( 150 const lldb::ModuleSP &module_sp, lldb::DataBufferSP &data_sp, 151 const lldb::ProcessSP &process_sp, lldb::addr_t header_addr) { 152 if (!data_sp || !ObjectFilePECOFF::MagicBytesMatch(data_sp)) 153 return nullptr; 154 auto objfile_up = std::make_unique<ObjectFilePECOFF>( 155 module_sp, data_sp, process_sp, header_addr); 156 if (objfile_up.get() && objfile_up->ParseHeader()) { 157 return objfile_up.release(); 158 } 159 return nullptr; 160 } 161 162 size_t ObjectFilePECOFF::GetModuleSpecifications( 163 const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp, 164 lldb::offset_t data_offset, lldb::offset_t file_offset, 165 lldb::offset_t length, lldb_private::ModuleSpecList &specs) { 166 const size_t initial_count = specs.GetSize(); 167 if (!data_sp || !ObjectFilePECOFF::MagicBytesMatch(data_sp)) 168 return initial_count; 169 170 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 171 172 if (data_sp->GetByteSize() < length) 173 if (DataBufferSP full_sp = MapFileData(file, -1, file_offset)) 174 data_sp = std::move(full_sp); 175 auto binary = llvm::object::createBinary(llvm::MemoryBufferRef( 176 toStringRef(data_sp->GetData()), file.GetFilename().GetStringRef())); 177 178 if (!binary) { 179 LLDB_LOG_ERROR(log, binary.takeError(), 180 "Failed to create binary for file ({1}): {0}", file); 181 return initial_count; 182 } 183 184 auto *COFFObj = llvm::dyn_cast<llvm::object::COFFObjectFile>(binary->get()); 185 if (!COFFObj) 186 return initial_count; 187 188 ModuleSpec module_spec(file); 189 ArchSpec &spec = module_spec.GetArchitecture(); 190 lldb_private::UUID &uuid = module_spec.GetUUID(); 191 if (!uuid.IsValid()) 192 uuid = GetCoffUUID(*COFFObj); 193 194 switch (COFFObj->getMachine()) { 195 case MachineAmd64: 196 spec.SetTriple("x86_64-pc-windows"); 197 specs.Append(module_spec); 198 break; 199 case MachineX86: 200 spec.SetTriple("i386-pc-windows"); 201 specs.Append(module_spec); 202 spec.SetTriple("i686-pc-windows"); 203 specs.Append(module_spec); 204 break; 205 case MachineArmNt: 206 spec.SetTriple("armv7-pc-windows"); 207 specs.Append(module_spec); 208 break; 209 case MachineArm64: 210 spec.SetTriple("aarch64-pc-windows"); 211 specs.Append(module_spec); 212 break; 213 default: 214 break; 215 } 216 217 return specs.GetSize() - initial_count; 218 } 219 220 bool ObjectFilePECOFF::SaveCore(const lldb::ProcessSP &process_sp, 221 const lldb_private::FileSpec &outfile, 222 lldb_private::Status &error) { 223 return SaveMiniDump(process_sp, outfile, error); 224 } 225 226 bool ObjectFilePECOFF::MagicBytesMatch(DataBufferSP &data_sp) { 227 DataExtractor data(data_sp, eByteOrderLittle, 4); 228 lldb::offset_t offset = 0; 229 uint16_t magic = data.GetU16(&offset); 230 return magic == IMAGE_DOS_SIGNATURE; 231 } 232 233 lldb::SymbolType ObjectFilePECOFF::MapSymbolType(uint16_t coff_symbol_type) { 234 // TODO: We need to complete this mapping of COFF symbol types to LLDB ones. 235 // For now, here's a hack to make sure our function have types. 236 const auto complex_type = 237 coff_symbol_type >> llvm::COFF::SCT_COMPLEX_TYPE_SHIFT; 238 if (complex_type == llvm::COFF::IMAGE_SYM_DTYPE_FUNCTION) { 239 return lldb::eSymbolTypeCode; 240 } 241 return lldb::eSymbolTypeInvalid; 242 } 243 244 bool ObjectFilePECOFF::CreateBinary() { 245 if (m_binary) 246 return true; 247 248 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 249 250 auto binary = llvm::object::createBinary(llvm::MemoryBufferRef( 251 toStringRef(m_data.GetData()), m_file.GetFilename().GetStringRef())); 252 if (!binary) { 253 LLDB_LOG_ERROR(log, binary.takeError(), 254 "Failed to create binary for file ({1}): {0}", m_file); 255 return false; 256 } 257 258 // Make sure we only handle COFF format. 259 m_binary = 260 llvm::unique_dyn_cast<llvm::object::COFFObjectFile>(std::move(*binary)); 261 if (!m_binary) 262 return false; 263 264 LLDB_LOG(log, "this = {0}, module = {1} ({2}), file = {3}, binary = {4}", 265 this, GetModule().get(), GetModule()->GetSpecificationDescription(), 266 m_file.GetPath(), m_binary.get()); 267 return true; 268 } 269 270 ObjectFilePECOFF::ObjectFilePECOFF(const lldb::ModuleSP &module_sp, 271 DataBufferSP &data_sp, 272 lldb::offset_t data_offset, 273 const FileSpec *file, 274 lldb::offset_t file_offset, 275 lldb::offset_t length) 276 : ObjectFile(module_sp, file, file_offset, length, data_sp, data_offset), 277 m_dos_header(), m_coff_header(), m_sect_headers(), 278 m_entry_point_address(), m_deps_filespec() { 279 ::memset(&m_dos_header, 0, sizeof(m_dos_header)); 280 ::memset(&m_coff_header, 0, sizeof(m_coff_header)); 281 } 282 283 ObjectFilePECOFF::ObjectFilePECOFF(const lldb::ModuleSP &module_sp, 284 DataBufferSP &header_data_sp, 285 const lldb::ProcessSP &process_sp, 286 addr_t header_addr) 287 : ObjectFile(module_sp, process_sp, header_addr, header_data_sp), 288 m_dos_header(), m_coff_header(), m_sect_headers(), 289 m_entry_point_address(), m_deps_filespec() { 290 ::memset(&m_dos_header, 0, sizeof(m_dos_header)); 291 ::memset(&m_coff_header, 0, sizeof(m_coff_header)); 292 } 293 294 ObjectFilePECOFF::~ObjectFilePECOFF() {} 295 296 bool ObjectFilePECOFF::ParseHeader() { 297 ModuleSP module_sp(GetModule()); 298 if (module_sp) { 299 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 300 m_sect_headers.clear(); 301 m_data.SetByteOrder(eByteOrderLittle); 302 lldb::offset_t offset = 0; 303 304 if (ParseDOSHeader(m_data, m_dos_header)) { 305 offset = m_dos_header.e_lfanew; 306 uint32_t pe_signature = m_data.GetU32(&offset); 307 if (pe_signature != IMAGE_NT_SIGNATURE) 308 return false; 309 if (ParseCOFFHeader(m_data, &offset, m_coff_header)) { 310 if (m_coff_header.hdrsize > 0) 311 ParseCOFFOptionalHeader(&offset); 312 ParseSectionHeaders(offset); 313 } 314 m_data.SetAddressByteSize(GetAddressByteSize()); 315 return true; 316 } 317 } 318 return false; 319 } 320 321 bool ObjectFilePECOFF::SetLoadAddress(Target &target, addr_t value, 322 bool value_is_offset) { 323 bool changed = false; 324 ModuleSP module_sp = GetModule(); 325 if (module_sp) { 326 size_t num_loaded_sections = 0; 327 SectionList *section_list = GetSectionList(); 328 if (section_list) { 329 if (!value_is_offset) { 330 value -= m_image_base; 331 } 332 333 const size_t num_sections = section_list->GetSize(); 334 size_t sect_idx = 0; 335 336 for (sect_idx = 0; sect_idx < num_sections; ++sect_idx) { 337 // Iterate through the object file sections to find all of the sections 338 // that have SHF_ALLOC in their flag bits. 339 SectionSP section_sp(section_list->GetSectionAtIndex(sect_idx)); 340 if (section_sp && !section_sp->IsThreadSpecific()) { 341 if (target.GetSectionLoadList().SetSectionLoadAddress( 342 section_sp, section_sp->GetFileAddress() + value)) 343 ++num_loaded_sections; 344 } 345 } 346 changed = num_loaded_sections > 0; 347 } 348 } 349 return changed; 350 } 351 352 ByteOrder ObjectFilePECOFF::GetByteOrder() const { return eByteOrderLittle; } 353 354 bool ObjectFilePECOFF::IsExecutable() const { 355 return (m_coff_header.flags & llvm::COFF::IMAGE_FILE_DLL) == 0; 356 } 357 358 uint32_t ObjectFilePECOFF::GetAddressByteSize() const { 359 if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32_PLUS) 360 return 8; 361 else if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32) 362 return 4; 363 return 4; 364 } 365 366 // NeedsEndianSwap 367 // 368 // Return true if an endian swap needs to occur when extracting data from this 369 // file. 370 bool ObjectFilePECOFF::NeedsEndianSwap() const { 371 #if defined(__LITTLE_ENDIAN__) 372 return false; 373 #else 374 return true; 375 #endif 376 } 377 // ParseDOSHeader 378 bool ObjectFilePECOFF::ParseDOSHeader(DataExtractor &data, 379 dos_header_t &dos_header) { 380 bool success = false; 381 lldb::offset_t offset = 0; 382 success = data.ValidOffsetForDataOfSize(0, sizeof(dos_header)); 383 384 if (success) { 385 dos_header.e_magic = data.GetU16(&offset); // Magic number 386 success = dos_header.e_magic == IMAGE_DOS_SIGNATURE; 387 388 if (success) { 389 dos_header.e_cblp = data.GetU16(&offset); // Bytes on last page of file 390 dos_header.e_cp = data.GetU16(&offset); // Pages in file 391 dos_header.e_crlc = data.GetU16(&offset); // Relocations 392 dos_header.e_cparhdr = 393 data.GetU16(&offset); // Size of header in paragraphs 394 dos_header.e_minalloc = 395 data.GetU16(&offset); // Minimum extra paragraphs needed 396 dos_header.e_maxalloc = 397 data.GetU16(&offset); // Maximum extra paragraphs needed 398 dos_header.e_ss = data.GetU16(&offset); // Initial (relative) SS value 399 dos_header.e_sp = data.GetU16(&offset); // Initial SP value 400 dos_header.e_csum = data.GetU16(&offset); // Checksum 401 dos_header.e_ip = data.GetU16(&offset); // Initial IP value 402 dos_header.e_cs = data.GetU16(&offset); // Initial (relative) CS value 403 dos_header.e_lfarlc = 404 data.GetU16(&offset); // File address of relocation table 405 dos_header.e_ovno = data.GetU16(&offset); // Overlay number 406 407 dos_header.e_res[0] = data.GetU16(&offset); // Reserved words 408 dos_header.e_res[1] = data.GetU16(&offset); // Reserved words 409 dos_header.e_res[2] = data.GetU16(&offset); // Reserved words 410 dos_header.e_res[3] = data.GetU16(&offset); // Reserved words 411 412 dos_header.e_oemid = 413 data.GetU16(&offset); // OEM identifier (for e_oeminfo) 414 dos_header.e_oeminfo = 415 data.GetU16(&offset); // OEM information; e_oemid specific 416 dos_header.e_res2[0] = data.GetU16(&offset); // Reserved words 417 dos_header.e_res2[1] = data.GetU16(&offset); // Reserved words 418 dos_header.e_res2[2] = data.GetU16(&offset); // Reserved words 419 dos_header.e_res2[3] = data.GetU16(&offset); // Reserved words 420 dos_header.e_res2[4] = data.GetU16(&offset); // Reserved words 421 dos_header.e_res2[5] = data.GetU16(&offset); // Reserved words 422 dos_header.e_res2[6] = data.GetU16(&offset); // Reserved words 423 dos_header.e_res2[7] = data.GetU16(&offset); // Reserved words 424 dos_header.e_res2[8] = data.GetU16(&offset); // Reserved words 425 dos_header.e_res2[9] = data.GetU16(&offset); // Reserved words 426 427 dos_header.e_lfanew = 428 data.GetU32(&offset); // File address of new exe header 429 } 430 } 431 if (!success) 432 memset(&dos_header, 0, sizeof(dos_header)); 433 return success; 434 } 435 436 // ParserCOFFHeader 437 bool ObjectFilePECOFF::ParseCOFFHeader(DataExtractor &data, 438 lldb::offset_t *offset_ptr, 439 coff_header_t &coff_header) { 440 bool success = 441 data.ValidOffsetForDataOfSize(*offset_ptr, sizeof(coff_header)); 442 if (success) { 443 coff_header.machine = data.GetU16(offset_ptr); 444 coff_header.nsects = data.GetU16(offset_ptr); 445 coff_header.modtime = data.GetU32(offset_ptr); 446 coff_header.symoff = data.GetU32(offset_ptr); 447 coff_header.nsyms = data.GetU32(offset_ptr); 448 coff_header.hdrsize = data.GetU16(offset_ptr); 449 coff_header.flags = data.GetU16(offset_ptr); 450 } 451 if (!success) 452 memset(&coff_header, 0, sizeof(coff_header)); 453 return success; 454 } 455 456 bool ObjectFilePECOFF::ParseCOFFOptionalHeader(lldb::offset_t *offset_ptr) { 457 bool success = false; 458 const lldb::offset_t end_offset = *offset_ptr + m_coff_header.hdrsize; 459 if (*offset_ptr < end_offset) { 460 success = true; 461 m_coff_header_opt.magic = m_data.GetU16(offset_ptr); 462 m_coff_header_opt.major_linker_version = m_data.GetU8(offset_ptr); 463 m_coff_header_opt.minor_linker_version = m_data.GetU8(offset_ptr); 464 m_coff_header_opt.code_size = m_data.GetU32(offset_ptr); 465 m_coff_header_opt.data_size = m_data.GetU32(offset_ptr); 466 m_coff_header_opt.bss_size = m_data.GetU32(offset_ptr); 467 m_coff_header_opt.entry = m_data.GetU32(offset_ptr); 468 m_coff_header_opt.code_offset = m_data.GetU32(offset_ptr); 469 470 const uint32_t addr_byte_size = GetAddressByteSize(); 471 472 if (*offset_ptr < end_offset) { 473 if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32) { 474 // PE32 only 475 m_coff_header_opt.data_offset = m_data.GetU32(offset_ptr); 476 } else 477 m_coff_header_opt.data_offset = 0; 478 479 if (*offset_ptr < end_offset) { 480 m_coff_header_opt.image_base = 481 m_data.GetMaxU64(offset_ptr, addr_byte_size); 482 m_coff_header_opt.sect_alignment = m_data.GetU32(offset_ptr); 483 m_coff_header_opt.file_alignment = m_data.GetU32(offset_ptr); 484 m_coff_header_opt.major_os_system_version = m_data.GetU16(offset_ptr); 485 m_coff_header_opt.minor_os_system_version = m_data.GetU16(offset_ptr); 486 m_coff_header_opt.major_image_version = m_data.GetU16(offset_ptr); 487 m_coff_header_opt.minor_image_version = m_data.GetU16(offset_ptr); 488 m_coff_header_opt.major_subsystem_version = m_data.GetU16(offset_ptr); 489 m_coff_header_opt.minor_subsystem_version = m_data.GetU16(offset_ptr); 490 m_coff_header_opt.reserved1 = m_data.GetU32(offset_ptr); 491 m_coff_header_opt.image_size = m_data.GetU32(offset_ptr); 492 m_coff_header_opt.header_size = m_data.GetU32(offset_ptr); 493 m_coff_header_opt.checksum = m_data.GetU32(offset_ptr); 494 m_coff_header_opt.subsystem = m_data.GetU16(offset_ptr); 495 m_coff_header_opt.dll_flags = m_data.GetU16(offset_ptr); 496 m_coff_header_opt.stack_reserve_size = 497 m_data.GetMaxU64(offset_ptr, addr_byte_size); 498 m_coff_header_opt.stack_commit_size = 499 m_data.GetMaxU64(offset_ptr, addr_byte_size); 500 m_coff_header_opt.heap_reserve_size = 501 m_data.GetMaxU64(offset_ptr, addr_byte_size); 502 m_coff_header_opt.heap_commit_size = 503 m_data.GetMaxU64(offset_ptr, addr_byte_size); 504 m_coff_header_opt.loader_flags = m_data.GetU32(offset_ptr); 505 uint32_t num_data_dir_entries = m_data.GetU32(offset_ptr); 506 m_coff_header_opt.data_dirs.clear(); 507 m_coff_header_opt.data_dirs.resize(num_data_dir_entries); 508 uint32_t i; 509 for (i = 0; i < num_data_dir_entries; i++) { 510 m_coff_header_opt.data_dirs[i].vmaddr = m_data.GetU32(offset_ptr); 511 m_coff_header_opt.data_dirs[i].vmsize = m_data.GetU32(offset_ptr); 512 } 513 514 m_image_base = m_coff_header_opt.image_base; 515 } 516 } 517 } 518 // Make sure we are on track for section data which follows 519 *offset_ptr = end_offset; 520 return success; 521 } 522 523 uint32_t ObjectFilePECOFF::GetRVA(const Address &addr) const { 524 return addr.GetFileAddress() - m_image_base; 525 } 526 527 Address ObjectFilePECOFF::GetAddress(uint32_t rva) { 528 SectionList *sect_list = GetSectionList(); 529 if (!sect_list) 530 return Address(GetFileAddress(rva)); 531 532 return Address(GetFileAddress(rva), sect_list); 533 } 534 535 lldb::addr_t ObjectFilePECOFF::GetFileAddress(uint32_t rva) const { 536 return m_image_base + rva; 537 } 538 539 DataExtractor ObjectFilePECOFF::ReadImageData(uint32_t offset, size_t size) { 540 if (!size) 541 return {}; 542 543 if (m_data.ValidOffsetForDataOfSize(offset, size)) 544 return DataExtractor(m_data, offset, size); 545 546 ProcessSP process_sp(m_process_wp.lock()); 547 DataExtractor data; 548 if (process_sp) { 549 auto data_up = std::make_unique<DataBufferHeap>(size, 0); 550 Status readmem_error; 551 size_t bytes_read = 552 process_sp->ReadMemory(m_image_base + offset, data_up->GetBytes(), 553 data_up->GetByteSize(), readmem_error); 554 if (bytes_read == size) { 555 DataBufferSP buffer_sp(data_up.release()); 556 data.SetData(buffer_sp, 0, buffer_sp->GetByteSize()); 557 } 558 } 559 return data; 560 } 561 562 DataExtractor ObjectFilePECOFF::ReadImageDataByRVA(uint32_t rva, size_t size) { 563 Address addr = GetAddress(rva); 564 SectionSP sect = addr.GetSection(); 565 if (!sect) 566 return {}; 567 rva = sect->GetFileOffset() + addr.GetOffset(); 568 569 return ReadImageData(rva, size); 570 } 571 572 // ParseSectionHeaders 573 bool ObjectFilePECOFF::ParseSectionHeaders( 574 uint32_t section_header_data_offset) { 575 const uint32_t nsects = m_coff_header.nsects; 576 m_sect_headers.clear(); 577 578 if (nsects > 0) { 579 const size_t section_header_byte_size = nsects * sizeof(section_header_t); 580 DataExtractor section_header_data = 581 ReadImageData(section_header_data_offset, section_header_byte_size); 582 583 lldb::offset_t offset = 0; 584 if (section_header_data.ValidOffsetForDataOfSize( 585 offset, section_header_byte_size)) { 586 m_sect_headers.resize(nsects); 587 588 for (uint32_t idx = 0; idx < nsects; ++idx) { 589 const void *name_data = section_header_data.GetData(&offset, 8); 590 if (name_data) { 591 memcpy(m_sect_headers[idx].name, name_data, 8); 592 m_sect_headers[idx].vmsize = section_header_data.GetU32(&offset); 593 m_sect_headers[idx].vmaddr = section_header_data.GetU32(&offset); 594 m_sect_headers[idx].size = section_header_data.GetU32(&offset); 595 m_sect_headers[idx].offset = section_header_data.GetU32(&offset); 596 m_sect_headers[idx].reloff = section_header_data.GetU32(&offset); 597 m_sect_headers[idx].lineoff = section_header_data.GetU32(&offset); 598 m_sect_headers[idx].nreloc = section_header_data.GetU16(&offset); 599 m_sect_headers[idx].nline = section_header_data.GetU16(&offset); 600 m_sect_headers[idx].flags = section_header_data.GetU32(&offset); 601 } 602 } 603 } 604 } 605 606 return !m_sect_headers.empty(); 607 } 608 609 llvm::StringRef ObjectFilePECOFF::GetSectionName(const section_header_t §) { 610 llvm::StringRef hdr_name(sect.name, llvm::array_lengthof(sect.name)); 611 hdr_name = hdr_name.split('\0').first; 612 if (hdr_name.consume_front("/")) { 613 lldb::offset_t stroff; 614 if (!to_integer(hdr_name, stroff, 10)) 615 return ""; 616 lldb::offset_t string_file_offset = 617 m_coff_header.symoff + (m_coff_header.nsyms * 18) + stroff; 618 if (const char *name = m_data.GetCStr(&string_file_offset)) 619 return name; 620 return ""; 621 } 622 return hdr_name; 623 } 624 625 // GetNListSymtab 626 Symtab *ObjectFilePECOFF::GetSymtab() { 627 ModuleSP module_sp(GetModule()); 628 if (module_sp) { 629 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 630 if (m_symtab_up == nullptr) { 631 SectionList *sect_list = GetSectionList(); 632 m_symtab_up = std::make_unique<Symtab>(this); 633 std::lock_guard<std::recursive_mutex> guard(m_symtab_up->GetMutex()); 634 635 const uint32_t num_syms = m_coff_header.nsyms; 636 637 if (m_file && num_syms > 0 && m_coff_header.symoff > 0) { 638 const uint32_t symbol_size = 18; 639 const size_t symbol_data_size = num_syms * symbol_size; 640 // Include the 4-byte string table size at the end of the symbols 641 DataExtractor symtab_data = 642 ReadImageData(m_coff_header.symoff, symbol_data_size + 4); 643 lldb::offset_t offset = symbol_data_size; 644 const uint32_t strtab_size = symtab_data.GetU32(&offset); 645 if (strtab_size > 0) { 646 DataExtractor strtab_data = ReadImageData( 647 m_coff_header.symoff + symbol_data_size, strtab_size); 648 649 offset = 0; 650 std::string symbol_name; 651 Symbol *symbols = m_symtab_up->Resize(num_syms); 652 for (uint32_t i = 0; i < num_syms; ++i) { 653 coff_symbol_t symbol; 654 const uint32_t symbol_offset = offset; 655 const char *symbol_name_cstr = nullptr; 656 // If the first 4 bytes of the symbol string are zero, then they 657 // are followed by a 4-byte string table offset. Else these 658 // 8 bytes contain the symbol name 659 if (symtab_data.GetU32(&offset) == 0) { 660 // Long string that doesn't fit into the symbol table name, so 661 // now we must read the 4 byte string table offset 662 uint32_t strtab_offset = symtab_data.GetU32(&offset); 663 symbol_name_cstr = strtab_data.PeekCStr(strtab_offset); 664 symbol_name.assign(symbol_name_cstr); 665 } else { 666 // Short string that fits into the symbol table name which is 8 667 // bytes 668 offset += sizeof(symbol.name) - 4; // Skip remaining 669 symbol_name_cstr = symtab_data.PeekCStr(symbol_offset); 670 if (symbol_name_cstr == nullptr) 671 break; 672 symbol_name.assign(symbol_name_cstr, sizeof(symbol.name)); 673 } 674 symbol.value = symtab_data.GetU32(&offset); 675 symbol.sect = symtab_data.GetU16(&offset); 676 symbol.type = symtab_data.GetU16(&offset); 677 symbol.storage = symtab_data.GetU8(&offset); 678 symbol.naux = symtab_data.GetU8(&offset); 679 symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); 680 if ((int16_t)symbol.sect >= 1) { 681 Address symbol_addr(sect_list->FindSectionByID(symbol.sect), 682 symbol.value); 683 symbols[i].GetAddressRef() = symbol_addr; 684 symbols[i].SetType(MapSymbolType(symbol.type)); 685 } 686 687 if (symbol.naux > 0) { 688 i += symbol.naux; 689 offset += symbol.naux * symbol_size; 690 } 691 } 692 } 693 } 694 695 // Read export header 696 if (coff_data_dir_export_table < m_coff_header_opt.data_dirs.size() && 697 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmsize > 0 && 698 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr > 0) { 699 export_directory_entry export_table; 700 uint32_t data_start = 701 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr; 702 703 DataExtractor symtab_data = ReadImageDataByRVA( 704 data_start, m_coff_header_opt.data_dirs[0].vmsize); 705 lldb::offset_t offset = 0; 706 707 // Read export_table header 708 export_table.characteristics = symtab_data.GetU32(&offset); 709 export_table.time_date_stamp = symtab_data.GetU32(&offset); 710 export_table.major_version = symtab_data.GetU16(&offset); 711 export_table.minor_version = symtab_data.GetU16(&offset); 712 export_table.name = symtab_data.GetU32(&offset); 713 export_table.base = symtab_data.GetU32(&offset); 714 export_table.number_of_functions = symtab_data.GetU32(&offset); 715 export_table.number_of_names = symtab_data.GetU32(&offset); 716 export_table.address_of_functions = symtab_data.GetU32(&offset); 717 export_table.address_of_names = symtab_data.GetU32(&offset); 718 export_table.address_of_name_ordinals = symtab_data.GetU32(&offset); 719 720 bool has_ordinal = export_table.address_of_name_ordinals != 0; 721 722 lldb::offset_t name_offset = export_table.address_of_names - data_start; 723 lldb::offset_t name_ordinal_offset = 724 export_table.address_of_name_ordinals - data_start; 725 726 Symbol *symbols = m_symtab_up->Resize(export_table.number_of_names); 727 728 std::string symbol_name; 729 730 // Read each export table entry 731 for (size_t i = 0; i < export_table.number_of_names; ++i) { 732 uint32_t name_ordinal = 733 has_ordinal ? symtab_data.GetU16(&name_ordinal_offset) : i; 734 uint32_t name_address = symtab_data.GetU32(&name_offset); 735 736 const char *symbol_name_cstr = 737 symtab_data.PeekCStr(name_address - data_start); 738 symbol_name.assign(symbol_name_cstr); 739 740 lldb::offset_t function_offset = export_table.address_of_functions - 741 data_start + 742 sizeof(uint32_t) * name_ordinal; 743 uint32_t function_rva = symtab_data.GetU32(&function_offset); 744 745 Address symbol_addr(m_coff_header_opt.image_base + function_rva, 746 sect_list); 747 symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); 748 symbols[i].GetAddressRef() = symbol_addr; 749 symbols[i].SetType(lldb::eSymbolTypeCode); 750 symbols[i].SetDebug(true); 751 } 752 } 753 m_symtab_up->CalculateSymbolSizes(); 754 } 755 } 756 return m_symtab_up.get(); 757 } 758 759 std::unique_ptr<CallFrameInfo> ObjectFilePECOFF::CreateCallFrameInfo() { 760 if (coff_data_dir_exception_table >= m_coff_header_opt.data_dirs.size()) 761 return {}; 762 763 data_directory data_dir_exception = 764 m_coff_header_opt.data_dirs[coff_data_dir_exception_table]; 765 if (!data_dir_exception.vmaddr) 766 return {}; 767 768 if (m_coff_header.machine != llvm::COFF::IMAGE_FILE_MACHINE_AMD64) 769 return {}; 770 771 return std::make_unique<PECallFrameInfo>(*this, data_dir_exception.vmaddr, 772 data_dir_exception.vmsize); 773 } 774 775 bool ObjectFilePECOFF::IsStripped() { 776 // TODO: determine this for COFF 777 return false; 778 } 779 780 SectionType ObjectFilePECOFF::GetSectionType(llvm::StringRef sect_name, 781 const section_header_t §) { 782 ConstString const_sect_name(sect_name); 783 static ConstString g_code_sect_name(".code"); 784 static ConstString g_CODE_sect_name("CODE"); 785 static ConstString g_data_sect_name(".data"); 786 static ConstString g_DATA_sect_name("DATA"); 787 static ConstString g_bss_sect_name(".bss"); 788 static ConstString g_BSS_sect_name("BSS"); 789 790 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_CODE && 791 ((const_sect_name == g_code_sect_name) || 792 (const_sect_name == g_CODE_sect_name))) { 793 return eSectionTypeCode; 794 } 795 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA && 796 ((const_sect_name == g_data_sect_name) || 797 (const_sect_name == g_DATA_sect_name))) { 798 if (sect.size == 0 && sect.offset == 0) 799 return eSectionTypeZeroFill; 800 else 801 return eSectionTypeData; 802 } 803 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA && 804 ((const_sect_name == g_bss_sect_name) || 805 (const_sect_name == g_BSS_sect_name))) { 806 if (sect.size == 0) 807 return eSectionTypeZeroFill; 808 else 809 return eSectionTypeData; 810 } 811 812 SectionType section_type = 813 llvm::StringSwitch<SectionType>(sect_name) 814 .Case(".debug", eSectionTypeDebug) 815 .Case(".stabstr", eSectionTypeDataCString) 816 .Case(".reloc", eSectionTypeOther) 817 .Case(".debug_abbrev", eSectionTypeDWARFDebugAbbrev) 818 .Case(".debug_aranges", eSectionTypeDWARFDebugAranges) 819 .Case(".debug_frame", eSectionTypeDWARFDebugFrame) 820 .Case(".debug_info", eSectionTypeDWARFDebugInfo) 821 .Case(".debug_line", eSectionTypeDWARFDebugLine) 822 .Case(".debug_loc", eSectionTypeDWARFDebugLoc) 823 .Case(".debug_loclists", eSectionTypeDWARFDebugLocLists) 824 .Case(".debug_macinfo", eSectionTypeDWARFDebugMacInfo) 825 .Case(".debug_names", eSectionTypeDWARFDebugNames) 826 .Case(".debug_pubnames", eSectionTypeDWARFDebugPubNames) 827 .Case(".debug_pubtypes", eSectionTypeDWARFDebugPubTypes) 828 .Case(".debug_ranges", eSectionTypeDWARFDebugRanges) 829 .Case(".debug_str", eSectionTypeDWARFDebugStr) 830 .Case(".debug_types", eSectionTypeDWARFDebugTypes) 831 // .eh_frame can be truncated to 8 chars. 832 .Cases(".eh_frame", ".eh_fram", eSectionTypeEHFrame) 833 .Case(".gosymtab", eSectionTypeGoSymtab) 834 .Default(eSectionTypeInvalid); 835 if (section_type != eSectionTypeInvalid) 836 return section_type; 837 838 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_CODE) 839 return eSectionTypeCode; 840 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA) 841 return eSectionTypeData; 842 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA) { 843 if (sect.size == 0) 844 return eSectionTypeZeroFill; 845 else 846 return eSectionTypeData; 847 } 848 return eSectionTypeOther; 849 } 850 851 void ObjectFilePECOFF::CreateSections(SectionList &unified_section_list) { 852 if (m_sections_up) 853 return; 854 m_sections_up = std::make_unique<SectionList>(); 855 856 ModuleSP module_sp(GetModule()); 857 if (module_sp) { 858 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 859 860 SectionSP header_sp = std::make_shared<Section>( 861 module_sp, this, ~user_id_t(0), ConstString("PECOFF header"), 862 eSectionTypeOther, m_coff_header_opt.image_base, 863 m_coff_header_opt.header_size, 864 /*file_offset*/ 0, m_coff_header_opt.header_size, 865 m_coff_header_opt.sect_alignment, 866 /*flags*/ 0); 867 header_sp->SetPermissions(ePermissionsReadable); 868 m_sections_up->AddSection(header_sp); 869 unified_section_list.AddSection(header_sp); 870 871 const uint32_t nsects = m_sect_headers.size(); 872 ModuleSP module_sp(GetModule()); 873 for (uint32_t idx = 0; idx < nsects; ++idx) { 874 llvm::StringRef sect_name = GetSectionName(m_sect_headers[idx]); 875 ConstString const_sect_name(sect_name); 876 SectionType section_type = GetSectionType(sect_name, m_sect_headers[idx]); 877 878 SectionSP section_sp(new Section( 879 module_sp, // Module to which this section belongs 880 this, // Object file to which this section belongs 881 idx + 1, // Section ID is the 1 based section index. 882 const_sect_name, // Name of this section 883 section_type, 884 m_coff_header_opt.image_base + 885 m_sect_headers[idx].vmaddr, // File VM address == addresses as 886 // they are found in the object file 887 m_sect_headers[idx].vmsize, // VM size in bytes of this section 888 m_sect_headers[idx] 889 .offset, // Offset to the data for this section in the file 890 m_sect_headers[idx] 891 .size, // Size in bytes of this section as found in the file 892 m_coff_header_opt.sect_alignment, // Section alignment 893 m_sect_headers[idx].flags)); // Flags for this section 894 895 uint32_t permissions = 0; 896 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_EXECUTE) 897 permissions |= ePermissionsExecutable; 898 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_READ) 899 permissions |= ePermissionsReadable; 900 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_WRITE) 901 permissions |= ePermissionsWritable; 902 section_sp->SetPermissions(permissions); 903 904 m_sections_up->AddSection(section_sp); 905 unified_section_list.AddSection(section_sp); 906 } 907 } 908 } 909 910 UUID ObjectFilePECOFF::GetUUID() { 911 if (m_uuid.IsValid()) 912 return m_uuid; 913 914 if (!CreateBinary()) 915 return UUID(); 916 917 m_uuid = GetCoffUUID(*m_binary); 918 return m_uuid; 919 } 920 921 uint32_t ObjectFilePECOFF::ParseDependentModules() { 922 ModuleSP module_sp(GetModule()); 923 if (!module_sp) 924 return 0; 925 926 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 927 if (m_deps_filespec) 928 return m_deps_filespec->GetSize(); 929 930 // Cache coff binary if it is not done yet. 931 if (!CreateBinary()) 932 return 0; 933 934 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 935 LLDB_LOG(log, "this = {0}, module = {1} ({2}), file = {3}, binary = {4}", 936 this, GetModule().get(), GetModule()->GetSpecificationDescription(), 937 m_file.GetPath(), m_binary.get()); 938 939 m_deps_filespec = FileSpecList(); 940 941 for (const auto &entry : m_binary->import_directories()) { 942 llvm::StringRef dll_name; 943 // Report a bogus entry. 944 if (llvm::Error e = entry.getName(dll_name)) { 945 LLDB_LOGF(log, 946 "ObjectFilePECOFF::ParseDependentModules() - failed to get " 947 "import directory entry name: %s", 948 llvm::toString(std::move(e)).c_str()); 949 continue; 950 } 951 952 // At this moment we only have the base name of the DLL. The full path can 953 // only be seen after the dynamic loading. Our best guess is Try to get it 954 // with the help of the object file's directory. 955 llvm::SmallString<128> dll_fullpath; 956 FileSpec dll_specs(dll_name); 957 dll_specs.GetDirectory().SetString(m_file.GetDirectory().GetCString()); 958 959 if (!llvm::sys::fs::real_path(dll_specs.GetPath(), dll_fullpath)) 960 m_deps_filespec->EmplaceBack(dll_fullpath); 961 else { 962 // Known DLLs or DLL not found in the object file directory. 963 m_deps_filespec->EmplaceBack(dll_name); 964 } 965 } 966 return m_deps_filespec->GetSize(); 967 } 968 969 uint32_t ObjectFilePECOFF::GetDependentModules(FileSpecList &files) { 970 auto num_modules = ParseDependentModules(); 971 auto original_size = files.GetSize(); 972 973 for (unsigned i = 0; i < num_modules; ++i) 974 files.AppendIfUnique(m_deps_filespec->GetFileSpecAtIndex(i)); 975 976 return files.GetSize() - original_size; 977 } 978 979 lldb_private::Address ObjectFilePECOFF::GetEntryPointAddress() { 980 if (m_entry_point_address.IsValid()) 981 return m_entry_point_address; 982 983 if (!ParseHeader() || !IsExecutable()) 984 return m_entry_point_address; 985 986 SectionList *section_list = GetSectionList(); 987 addr_t file_addr = m_coff_header_opt.entry + m_coff_header_opt.image_base; 988 989 if (!section_list) 990 m_entry_point_address.SetOffset(file_addr); 991 else 992 m_entry_point_address.ResolveAddressUsingFileSections(file_addr, 993 section_list); 994 return m_entry_point_address; 995 } 996 997 Address ObjectFilePECOFF::GetBaseAddress() { 998 return Address(GetSectionList()->GetSectionAtIndex(0), 0); 999 } 1000 1001 // Dump 1002 // 1003 // Dump the specifics of the runtime file container (such as any headers 1004 // segments, sections, etc). 1005 void ObjectFilePECOFF::Dump(Stream *s) { 1006 ModuleSP module_sp(GetModule()); 1007 if (module_sp) { 1008 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 1009 s->Printf("%p: ", static_cast<void *>(this)); 1010 s->Indent(); 1011 s->PutCString("ObjectFilePECOFF"); 1012 1013 ArchSpec header_arch = GetArchitecture(); 1014 1015 *s << ", file = '" << m_file 1016 << "', arch = " << header_arch.GetArchitectureName() << "\n"; 1017 1018 SectionList *sections = GetSectionList(); 1019 if (sections) 1020 sections->Dump(s->AsRawOstream(), s->GetIndentLevel(), nullptr, true, 1021 UINT32_MAX); 1022 1023 if (m_symtab_up) 1024 m_symtab_up->Dump(s, nullptr, eSortOrderNone); 1025 1026 if (m_dos_header.e_magic) 1027 DumpDOSHeader(s, m_dos_header); 1028 if (m_coff_header.machine) { 1029 DumpCOFFHeader(s, m_coff_header); 1030 if (m_coff_header.hdrsize) 1031 DumpOptCOFFHeader(s, m_coff_header_opt); 1032 } 1033 s->EOL(); 1034 DumpSectionHeaders(s); 1035 s->EOL(); 1036 1037 DumpDependentModules(s); 1038 s->EOL(); 1039 } 1040 } 1041 1042 // DumpDOSHeader 1043 // 1044 // Dump the MS-DOS header to the specified output stream 1045 void ObjectFilePECOFF::DumpDOSHeader(Stream *s, const dos_header_t &header) { 1046 s->PutCString("MSDOS Header\n"); 1047 s->Printf(" e_magic = 0x%4.4x\n", header.e_magic); 1048 s->Printf(" e_cblp = 0x%4.4x\n", header.e_cblp); 1049 s->Printf(" e_cp = 0x%4.4x\n", header.e_cp); 1050 s->Printf(" e_crlc = 0x%4.4x\n", header.e_crlc); 1051 s->Printf(" e_cparhdr = 0x%4.4x\n", header.e_cparhdr); 1052 s->Printf(" e_minalloc = 0x%4.4x\n", header.e_minalloc); 1053 s->Printf(" e_maxalloc = 0x%4.4x\n", header.e_maxalloc); 1054 s->Printf(" e_ss = 0x%4.4x\n", header.e_ss); 1055 s->Printf(" e_sp = 0x%4.4x\n", header.e_sp); 1056 s->Printf(" e_csum = 0x%4.4x\n", header.e_csum); 1057 s->Printf(" e_ip = 0x%4.4x\n", header.e_ip); 1058 s->Printf(" e_cs = 0x%4.4x\n", header.e_cs); 1059 s->Printf(" e_lfarlc = 0x%4.4x\n", header.e_lfarlc); 1060 s->Printf(" e_ovno = 0x%4.4x\n", header.e_ovno); 1061 s->Printf(" e_res[4] = { 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x }\n", 1062 header.e_res[0], header.e_res[1], header.e_res[2], header.e_res[3]); 1063 s->Printf(" e_oemid = 0x%4.4x\n", header.e_oemid); 1064 s->Printf(" e_oeminfo = 0x%4.4x\n", header.e_oeminfo); 1065 s->Printf(" e_res2[10] = { 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, " 1066 "0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x }\n", 1067 header.e_res2[0], header.e_res2[1], header.e_res2[2], 1068 header.e_res2[3], header.e_res2[4], header.e_res2[5], 1069 header.e_res2[6], header.e_res2[7], header.e_res2[8], 1070 header.e_res2[9]); 1071 s->Printf(" e_lfanew = 0x%8.8x\n", header.e_lfanew); 1072 } 1073 1074 // DumpCOFFHeader 1075 // 1076 // Dump the COFF header to the specified output stream 1077 void ObjectFilePECOFF::DumpCOFFHeader(Stream *s, const coff_header_t &header) { 1078 s->PutCString("COFF Header\n"); 1079 s->Printf(" machine = 0x%4.4x\n", header.machine); 1080 s->Printf(" nsects = 0x%4.4x\n", header.nsects); 1081 s->Printf(" modtime = 0x%8.8x\n", header.modtime); 1082 s->Printf(" symoff = 0x%8.8x\n", header.symoff); 1083 s->Printf(" nsyms = 0x%8.8x\n", header.nsyms); 1084 s->Printf(" hdrsize = 0x%4.4x\n", header.hdrsize); 1085 } 1086 1087 // DumpOptCOFFHeader 1088 // 1089 // Dump the optional COFF header to the specified output stream 1090 void ObjectFilePECOFF::DumpOptCOFFHeader(Stream *s, 1091 const coff_opt_header_t &header) { 1092 s->PutCString("Optional COFF Header\n"); 1093 s->Printf(" magic = 0x%4.4x\n", header.magic); 1094 s->Printf(" major_linker_version = 0x%2.2x\n", 1095 header.major_linker_version); 1096 s->Printf(" minor_linker_version = 0x%2.2x\n", 1097 header.minor_linker_version); 1098 s->Printf(" code_size = 0x%8.8x\n", header.code_size); 1099 s->Printf(" data_size = 0x%8.8x\n", header.data_size); 1100 s->Printf(" bss_size = 0x%8.8x\n", header.bss_size); 1101 s->Printf(" entry = 0x%8.8x\n", header.entry); 1102 s->Printf(" code_offset = 0x%8.8x\n", header.code_offset); 1103 s->Printf(" data_offset = 0x%8.8x\n", header.data_offset); 1104 s->Printf(" image_base = 0x%16.16" PRIx64 "\n", 1105 header.image_base); 1106 s->Printf(" sect_alignment = 0x%8.8x\n", header.sect_alignment); 1107 s->Printf(" file_alignment = 0x%8.8x\n", header.file_alignment); 1108 s->Printf(" major_os_system_version = 0x%4.4x\n", 1109 header.major_os_system_version); 1110 s->Printf(" minor_os_system_version = 0x%4.4x\n", 1111 header.minor_os_system_version); 1112 s->Printf(" major_image_version = 0x%4.4x\n", 1113 header.major_image_version); 1114 s->Printf(" minor_image_version = 0x%4.4x\n", 1115 header.minor_image_version); 1116 s->Printf(" major_subsystem_version = 0x%4.4x\n", 1117 header.major_subsystem_version); 1118 s->Printf(" minor_subsystem_version = 0x%4.4x\n", 1119 header.minor_subsystem_version); 1120 s->Printf(" reserved1 = 0x%8.8x\n", header.reserved1); 1121 s->Printf(" image_size = 0x%8.8x\n", header.image_size); 1122 s->Printf(" header_size = 0x%8.8x\n", header.header_size); 1123 s->Printf(" checksum = 0x%8.8x\n", header.checksum); 1124 s->Printf(" subsystem = 0x%4.4x\n", header.subsystem); 1125 s->Printf(" dll_flags = 0x%4.4x\n", header.dll_flags); 1126 s->Printf(" stack_reserve_size = 0x%16.16" PRIx64 "\n", 1127 header.stack_reserve_size); 1128 s->Printf(" stack_commit_size = 0x%16.16" PRIx64 "\n", 1129 header.stack_commit_size); 1130 s->Printf(" heap_reserve_size = 0x%16.16" PRIx64 "\n", 1131 header.heap_reserve_size); 1132 s->Printf(" heap_commit_size = 0x%16.16" PRIx64 "\n", 1133 header.heap_commit_size); 1134 s->Printf(" loader_flags = 0x%8.8x\n", header.loader_flags); 1135 s->Printf(" num_data_dir_entries = 0x%8.8x\n", 1136 (uint32_t)header.data_dirs.size()); 1137 uint32_t i; 1138 for (i = 0; i < header.data_dirs.size(); i++) { 1139 s->Printf(" data_dirs[%2u] vmaddr = 0x%8.8x, vmsize = 0x%8.8x\n", i, 1140 header.data_dirs[i].vmaddr, header.data_dirs[i].vmsize); 1141 } 1142 } 1143 // DumpSectionHeader 1144 // 1145 // Dump a single ELF section header to the specified output stream 1146 void ObjectFilePECOFF::DumpSectionHeader(Stream *s, 1147 const section_header_t &sh) { 1148 std::string name = std::string(GetSectionName(sh)); 1149 s->Printf("%-16s 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%4.4x " 1150 "0x%4.4x 0x%8.8x\n", 1151 name.c_str(), sh.vmaddr, sh.vmsize, sh.offset, sh.size, sh.reloff, 1152 sh.lineoff, sh.nreloc, sh.nline, sh.flags); 1153 } 1154 1155 // DumpSectionHeaders 1156 // 1157 // Dump all of the ELF section header to the specified output stream 1158 void ObjectFilePECOFF::DumpSectionHeaders(Stream *s) { 1159 1160 s->PutCString("Section Headers\n"); 1161 s->PutCString("IDX name vm addr vm size file off file " 1162 "size reloc off line off nreloc nline flags\n"); 1163 s->PutCString("==== ---------------- ---------- ---------- ---------- " 1164 "---------- ---------- ---------- ------ ------ ----------\n"); 1165 1166 uint32_t idx = 0; 1167 SectionHeaderCollIter pos, end = m_sect_headers.end(); 1168 1169 for (pos = m_sect_headers.begin(); pos != end; ++pos, ++idx) { 1170 s->Printf("[%2u] ", idx); 1171 ObjectFilePECOFF::DumpSectionHeader(s, *pos); 1172 } 1173 } 1174 1175 // DumpDependentModules 1176 // 1177 // Dump all of the dependent modules to the specified output stream 1178 void ObjectFilePECOFF::DumpDependentModules(lldb_private::Stream *s) { 1179 auto num_modules = ParseDependentModules(); 1180 if (num_modules > 0) { 1181 s->PutCString("Dependent Modules\n"); 1182 for (unsigned i = 0; i < num_modules; ++i) { 1183 auto spec = m_deps_filespec->GetFileSpecAtIndex(i); 1184 s->Printf(" %s\n", spec.GetFilename().GetCString()); 1185 } 1186 } 1187 } 1188 1189 bool ObjectFilePECOFF::IsWindowsSubsystem() { 1190 switch (m_coff_header_opt.subsystem) { 1191 case llvm::COFF::IMAGE_SUBSYSTEM_NATIVE: 1192 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_GUI: 1193 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_CUI: 1194 case llvm::COFF::IMAGE_SUBSYSTEM_NATIVE_WINDOWS: 1195 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_CE_GUI: 1196 case llvm::COFF::IMAGE_SUBSYSTEM_XBOX: 1197 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_BOOT_APPLICATION: 1198 return true; 1199 default: 1200 return false; 1201 } 1202 } 1203 1204 ArchSpec ObjectFilePECOFF::GetArchitecture() { 1205 uint16_t machine = m_coff_header.machine; 1206 switch (machine) { 1207 default: 1208 break; 1209 case llvm::COFF::IMAGE_FILE_MACHINE_AMD64: 1210 case llvm::COFF::IMAGE_FILE_MACHINE_I386: 1211 case llvm::COFF::IMAGE_FILE_MACHINE_POWERPC: 1212 case llvm::COFF::IMAGE_FILE_MACHINE_POWERPCFP: 1213 case llvm::COFF::IMAGE_FILE_MACHINE_ARM: 1214 case llvm::COFF::IMAGE_FILE_MACHINE_ARMNT: 1215 case llvm::COFF::IMAGE_FILE_MACHINE_THUMB: 1216 case llvm::COFF::IMAGE_FILE_MACHINE_ARM64: 1217 ArchSpec arch; 1218 arch.SetArchitecture(eArchTypeCOFF, machine, LLDB_INVALID_CPUTYPE, 1219 IsWindowsSubsystem() ? llvm::Triple::Win32 1220 : llvm::Triple::UnknownOS); 1221 return arch; 1222 } 1223 return ArchSpec(); 1224 } 1225 1226 ObjectFile::Type ObjectFilePECOFF::CalculateType() { 1227 if (m_coff_header.machine != 0) { 1228 if ((m_coff_header.flags & llvm::COFF::IMAGE_FILE_DLL) == 0) 1229 return eTypeExecutable; 1230 else 1231 return eTypeSharedLibrary; 1232 } 1233 return eTypeExecutable; 1234 } 1235 1236 ObjectFile::Strata ObjectFilePECOFF::CalculateStrata() { return eStrataUser; } 1237 1238 // PluginInterface protocol 1239 ConstString ObjectFilePECOFF::GetPluginName() { return GetPluginNameStatic(); } 1240 1241 uint32_t ObjectFilePECOFF::GetPluginVersion() { return 1; } 1242