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