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 static UUID GetCoffUUID(llvm::object::COFFObjectFile &coff_obj) { 47 const llvm::codeview::DebugInfo *pdb_info = nullptr; 48 llvm::StringRef pdb_file; 49 50 if (!coff_obj.getDebugPDBInfo(pdb_info, pdb_file) && pdb_info) { 51 if (pdb_info->PDB70.CVSignature == llvm::OMF::Signature::PDB70) { 52 UUID::CvRecordPdb70 info; 53 memcpy(&info.Uuid, pdb_info->PDB70.Signature, sizeof(info.Uuid)); 54 info.Age = pdb_info->PDB70.Age; 55 return UUID::fromCvRecord(info); 56 } 57 } 58 59 return UUID(); 60 } 61 62 char ObjectFilePECOFF::ID; 63 64 void ObjectFilePECOFF::Initialize() { 65 PluginManager::RegisterPlugin( 66 GetPluginNameStatic(), GetPluginDescriptionStatic(), CreateInstance, 67 CreateMemoryInstance, GetModuleSpecifications, SaveCore); 68 } 69 70 void ObjectFilePECOFF::Terminate() { 71 PluginManager::UnregisterPlugin(CreateInstance); 72 } 73 74 llvm::StringRef ObjectFilePECOFF::GetPluginDescriptionStatic() { 75 return "Portable Executable and Common Object File Format object file reader " 76 "(32 and 64 bit)"; 77 } 78 79 ObjectFile *ObjectFilePECOFF::CreateInstance(const lldb::ModuleSP &module_sp, 80 DataBufferSP &data_sp, 81 lldb::offset_t data_offset, 82 const lldb_private::FileSpec *file_p, 83 lldb::offset_t file_offset, 84 lldb::offset_t length) { 85 FileSpec file = file_p ? *file_p : FileSpec(); 86 if (!data_sp) { 87 data_sp = MapFileData(file, length, file_offset); 88 if (!data_sp) 89 return nullptr; 90 data_offset = 0; 91 } 92 93 if (!ObjectFilePECOFF::MagicBytesMatch(data_sp)) 94 return nullptr; 95 96 // Update the data to contain the entire file if it doesn't already 97 if (data_sp->GetByteSize() < length) { 98 data_sp = MapFileData(file, length, file_offset); 99 if (!data_sp) 100 return nullptr; 101 } 102 103 auto objfile_up = std::make_unique<ObjectFilePECOFF>( 104 module_sp, data_sp, data_offset, file_p, file_offset, length); 105 if (!objfile_up || !objfile_up->ParseHeader()) 106 return nullptr; 107 108 // Cache coff binary. 109 if (!objfile_up->CreateBinary()) 110 return nullptr; 111 return objfile_up.release(); 112 } 113 114 ObjectFile *ObjectFilePECOFF::CreateMemoryInstance( 115 const lldb::ModuleSP &module_sp, lldb::DataBufferSP &data_sp, 116 const lldb::ProcessSP &process_sp, lldb::addr_t header_addr) { 117 if (!data_sp || !ObjectFilePECOFF::MagicBytesMatch(data_sp)) 118 return nullptr; 119 auto objfile_up = std::make_unique<ObjectFilePECOFF>( 120 module_sp, data_sp, process_sp, header_addr); 121 if (objfile_up.get() && objfile_up->ParseHeader()) { 122 return objfile_up.release(); 123 } 124 return nullptr; 125 } 126 127 size_t ObjectFilePECOFF::GetModuleSpecifications( 128 const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp, 129 lldb::offset_t data_offset, lldb::offset_t file_offset, 130 lldb::offset_t length, lldb_private::ModuleSpecList &specs) { 131 const size_t initial_count = specs.GetSize(); 132 if (!data_sp || !ObjectFilePECOFF::MagicBytesMatch(data_sp)) 133 return initial_count; 134 135 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 136 137 if (data_sp->GetByteSize() < length) 138 if (DataBufferSP full_sp = MapFileData(file, -1, file_offset)) 139 data_sp = std::move(full_sp); 140 auto binary = llvm::object::createBinary(llvm::MemoryBufferRef( 141 toStringRef(data_sp->GetData()), file.GetFilename().GetStringRef())); 142 143 if (!binary) { 144 LLDB_LOG_ERROR(log, binary.takeError(), 145 "Failed to create binary for file ({1}): {0}", file); 146 return initial_count; 147 } 148 149 auto *COFFObj = llvm::dyn_cast<llvm::object::COFFObjectFile>(binary->get()); 150 if (!COFFObj) 151 return initial_count; 152 153 ModuleSpec module_spec(file); 154 ArchSpec &spec = module_spec.GetArchitecture(); 155 lldb_private::UUID &uuid = module_spec.GetUUID(); 156 if (!uuid.IsValid()) 157 uuid = GetCoffUUID(*COFFObj); 158 159 switch (COFFObj->getMachine()) { 160 case MachineAmd64: 161 spec.SetTriple("x86_64-pc-windows"); 162 specs.Append(module_spec); 163 break; 164 case MachineX86: 165 spec.SetTriple("i386-pc-windows"); 166 specs.Append(module_spec); 167 spec.SetTriple("i686-pc-windows"); 168 specs.Append(module_spec); 169 break; 170 case MachineArmNt: 171 spec.SetTriple("armv7-pc-windows"); 172 specs.Append(module_spec); 173 break; 174 case MachineArm64: 175 spec.SetTriple("aarch64-pc-windows"); 176 specs.Append(module_spec); 177 break; 178 default: 179 break; 180 } 181 182 return specs.GetSize() - initial_count; 183 } 184 185 bool ObjectFilePECOFF::SaveCore(const lldb::ProcessSP &process_sp, 186 const lldb_private::FileSpec &outfile, 187 lldb::SaveCoreStyle &core_style, 188 lldb_private::Status &error) { 189 core_style = eSaveCoreFull; 190 return SaveMiniDump(process_sp, outfile, error); 191 } 192 193 bool ObjectFilePECOFF::MagicBytesMatch(DataBufferSP &data_sp) { 194 DataExtractor data(data_sp, eByteOrderLittle, 4); 195 lldb::offset_t offset = 0; 196 uint16_t magic = data.GetU16(&offset); 197 return magic == IMAGE_DOS_SIGNATURE; 198 } 199 200 lldb::SymbolType ObjectFilePECOFF::MapSymbolType(uint16_t coff_symbol_type) { 201 // TODO: We need to complete this mapping of COFF symbol types to LLDB ones. 202 // For now, here's a hack to make sure our function have types. 203 const auto complex_type = 204 coff_symbol_type >> llvm::COFF::SCT_COMPLEX_TYPE_SHIFT; 205 if (complex_type == llvm::COFF::IMAGE_SYM_DTYPE_FUNCTION) { 206 return lldb::eSymbolTypeCode; 207 } 208 return lldb::eSymbolTypeInvalid; 209 } 210 211 bool ObjectFilePECOFF::CreateBinary() { 212 if (m_binary) 213 return true; 214 215 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 216 217 auto binary = llvm::object::createBinary(llvm::MemoryBufferRef( 218 toStringRef(m_data.GetData()), m_file.GetFilename().GetStringRef())); 219 if (!binary) { 220 LLDB_LOG_ERROR(log, binary.takeError(), 221 "Failed to create binary for file ({1}): {0}", m_file); 222 return false; 223 } 224 225 // Make sure we only handle COFF format. 226 m_binary = 227 llvm::unique_dyn_cast<llvm::object::COFFObjectFile>(std::move(*binary)); 228 if (!m_binary) 229 return false; 230 231 LLDB_LOG(log, "this = {0}, module = {1} ({2}), file = {3}, binary = {4}", 232 this, GetModule().get(), GetModule()->GetSpecificationDescription(), 233 m_file.GetPath(), m_binary.get()); 234 return true; 235 } 236 237 ObjectFilePECOFF::ObjectFilePECOFF(const lldb::ModuleSP &module_sp, 238 DataBufferSP &data_sp, 239 lldb::offset_t data_offset, 240 const FileSpec *file, 241 lldb::offset_t file_offset, 242 lldb::offset_t length) 243 : ObjectFile(module_sp, file, file_offset, length, data_sp, data_offset), 244 m_dos_header(), m_coff_header(), m_sect_headers(), 245 m_entry_point_address(), m_deps_filespec() { 246 ::memset(&m_dos_header, 0, sizeof(m_dos_header)); 247 ::memset(&m_coff_header, 0, sizeof(m_coff_header)); 248 } 249 250 ObjectFilePECOFF::ObjectFilePECOFF(const lldb::ModuleSP &module_sp, 251 DataBufferSP &header_data_sp, 252 const lldb::ProcessSP &process_sp, 253 addr_t header_addr) 254 : ObjectFile(module_sp, process_sp, header_addr, header_data_sp), 255 m_dos_header(), m_coff_header(), m_sect_headers(), 256 m_entry_point_address(), m_deps_filespec() { 257 ::memset(&m_dos_header, 0, sizeof(m_dos_header)); 258 ::memset(&m_coff_header, 0, sizeof(m_coff_header)); 259 } 260 261 ObjectFilePECOFF::~ObjectFilePECOFF() = default; 262 263 bool ObjectFilePECOFF::ParseHeader() { 264 ModuleSP module_sp(GetModule()); 265 if (module_sp) { 266 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 267 m_sect_headers.clear(); 268 m_data.SetByteOrder(eByteOrderLittle); 269 lldb::offset_t offset = 0; 270 271 if (ParseDOSHeader(m_data, m_dos_header)) { 272 offset = m_dos_header.e_lfanew; 273 uint32_t pe_signature = m_data.GetU32(&offset); 274 if (pe_signature != IMAGE_NT_SIGNATURE) 275 return false; 276 if (ParseCOFFHeader(m_data, &offset, m_coff_header)) { 277 if (m_coff_header.hdrsize > 0) 278 ParseCOFFOptionalHeader(&offset); 279 ParseSectionHeaders(offset); 280 } 281 m_data.SetAddressByteSize(GetAddressByteSize()); 282 return true; 283 } 284 } 285 return false; 286 } 287 288 bool ObjectFilePECOFF::SetLoadAddress(Target &target, addr_t value, 289 bool value_is_offset) { 290 bool changed = false; 291 ModuleSP module_sp = GetModule(); 292 if (module_sp) { 293 size_t num_loaded_sections = 0; 294 SectionList *section_list = GetSectionList(); 295 if (section_list) { 296 if (!value_is_offset) { 297 value -= m_image_base; 298 } 299 300 const size_t num_sections = section_list->GetSize(); 301 size_t sect_idx = 0; 302 303 for (sect_idx = 0; sect_idx < num_sections; ++sect_idx) { 304 // Iterate through the object file sections to find all of the sections 305 // that have SHF_ALLOC in their flag bits. 306 SectionSP section_sp(section_list->GetSectionAtIndex(sect_idx)); 307 if (section_sp && !section_sp->IsThreadSpecific()) { 308 if (target.GetSectionLoadList().SetSectionLoadAddress( 309 section_sp, section_sp->GetFileAddress() + value)) 310 ++num_loaded_sections; 311 } 312 } 313 changed = num_loaded_sections > 0; 314 } 315 } 316 return changed; 317 } 318 319 ByteOrder ObjectFilePECOFF::GetByteOrder() const { return eByteOrderLittle; } 320 321 bool ObjectFilePECOFF::IsExecutable() const { 322 return (m_coff_header.flags & llvm::COFF::IMAGE_FILE_DLL) == 0; 323 } 324 325 uint32_t ObjectFilePECOFF::GetAddressByteSize() const { 326 if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32_PLUS) 327 return 8; 328 else if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32) 329 return 4; 330 return 4; 331 } 332 333 // NeedsEndianSwap 334 // 335 // Return true if an endian swap needs to occur when extracting data from this 336 // file. 337 bool ObjectFilePECOFF::NeedsEndianSwap() const { 338 #if defined(__LITTLE_ENDIAN__) 339 return false; 340 #else 341 return true; 342 #endif 343 } 344 // ParseDOSHeader 345 bool ObjectFilePECOFF::ParseDOSHeader(DataExtractor &data, 346 dos_header_t &dos_header) { 347 bool success = false; 348 lldb::offset_t offset = 0; 349 success = data.ValidOffsetForDataOfSize(0, sizeof(dos_header)); 350 351 if (success) { 352 dos_header.e_magic = data.GetU16(&offset); // Magic number 353 success = dos_header.e_magic == IMAGE_DOS_SIGNATURE; 354 355 if (success) { 356 dos_header.e_cblp = data.GetU16(&offset); // Bytes on last page of file 357 dos_header.e_cp = data.GetU16(&offset); // Pages in file 358 dos_header.e_crlc = data.GetU16(&offset); // Relocations 359 dos_header.e_cparhdr = 360 data.GetU16(&offset); // Size of header in paragraphs 361 dos_header.e_minalloc = 362 data.GetU16(&offset); // Minimum extra paragraphs needed 363 dos_header.e_maxalloc = 364 data.GetU16(&offset); // Maximum extra paragraphs needed 365 dos_header.e_ss = data.GetU16(&offset); // Initial (relative) SS value 366 dos_header.e_sp = data.GetU16(&offset); // Initial SP value 367 dos_header.e_csum = data.GetU16(&offset); // Checksum 368 dos_header.e_ip = data.GetU16(&offset); // Initial IP value 369 dos_header.e_cs = data.GetU16(&offset); // Initial (relative) CS value 370 dos_header.e_lfarlc = 371 data.GetU16(&offset); // File address of relocation table 372 dos_header.e_ovno = data.GetU16(&offset); // Overlay number 373 374 dos_header.e_res[0] = data.GetU16(&offset); // Reserved words 375 dos_header.e_res[1] = data.GetU16(&offset); // Reserved words 376 dos_header.e_res[2] = data.GetU16(&offset); // Reserved words 377 dos_header.e_res[3] = data.GetU16(&offset); // Reserved words 378 379 dos_header.e_oemid = 380 data.GetU16(&offset); // OEM identifier (for e_oeminfo) 381 dos_header.e_oeminfo = 382 data.GetU16(&offset); // OEM information; e_oemid specific 383 dos_header.e_res2[0] = data.GetU16(&offset); // Reserved words 384 dos_header.e_res2[1] = data.GetU16(&offset); // Reserved words 385 dos_header.e_res2[2] = data.GetU16(&offset); // Reserved words 386 dos_header.e_res2[3] = data.GetU16(&offset); // Reserved words 387 dos_header.e_res2[4] = data.GetU16(&offset); // Reserved words 388 dos_header.e_res2[5] = data.GetU16(&offset); // Reserved words 389 dos_header.e_res2[6] = data.GetU16(&offset); // Reserved words 390 dos_header.e_res2[7] = data.GetU16(&offset); // Reserved words 391 dos_header.e_res2[8] = data.GetU16(&offset); // Reserved words 392 dos_header.e_res2[9] = data.GetU16(&offset); // Reserved words 393 394 dos_header.e_lfanew = 395 data.GetU32(&offset); // File address of new exe header 396 } 397 } 398 if (!success) 399 memset(&dos_header, 0, sizeof(dos_header)); 400 return success; 401 } 402 403 // ParserCOFFHeader 404 bool ObjectFilePECOFF::ParseCOFFHeader(DataExtractor &data, 405 lldb::offset_t *offset_ptr, 406 coff_header_t &coff_header) { 407 bool success = 408 data.ValidOffsetForDataOfSize(*offset_ptr, sizeof(coff_header)); 409 if (success) { 410 coff_header.machine = data.GetU16(offset_ptr); 411 coff_header.nsects = data.GetU16(offset_ptr); 412 coff_header.modtime = data.GetU32(offset_ptr); 413 coff_header.symoff = data.GetU32(offset_ptr); 414 coff_header.nsyms = data.GetU32(offset_ptr); 415 coff_header.hdrsize = data.GetU16(offset_ptr); 416 coff_header.flags = data.GetU16(offset_ptr); 417 } 418 if (!success) 419 memset(&coff_header, 0, sizeof(coff_header)); 420 return success; 421 } 422 423 bool ObjectFilePECOFF::ParseCOFFOptionalHeader(lldb::offset_t *offset_ptr) { 424 bool success = false; 425 const lldb::offset_t end_offset = *offset_ptr + m_coff_header.hdrsize; 426 if (*offset_ptr < end_offset) { 427 success = true; 428 m_coff_header_opt.magic = m_data.GetU16(offset_ptr); 429 m_coff_header_opt.major_linker_version = m_data.GetU8(offset_ptr); 430 m_coff_header_opt.minor_linker_version = m_data.GetU8(offset_ptr); 431 m_coff_header_opt.code_size = m_data.GetU32(offset_ptr); 432 m_coff_header_opt.data_size = m_data.GetU32(offset_ptr); 433 m_coff_header_opt.bss_size = m_data.GetU32(offset_ptr); 434 m_coff_header_opt.entry = m_data.GetU32(offset_ptr); 435 m_coff_header_opt.code_offset = m_data.GetU32(offset_ptr); 436 437 const uint32_t addr_byte_size = GetAddressByteSize(); 438 439 if (*offset_ptr < end_offset) { 440 if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32) { 441 // PE32 only 442 m_coff_header_opt.data_offset = m_data.GetU32(offset_ptr); 443 } else 444 m_coff_header_opt.data_offset = 0; 445 446 if (*offset_ptr < end_offset) { 447 m_coff_header_opt.image_base = 448 m_data.GetMaxU64(offset_ptr, addr_byte_size); 449 m_coff_header_opt.sect_alignment = m_data.GetU32(offset_ptr); 450 m_coff_header_opt.file_alignment = m_data.GetU32(offset_ptr); 451 m_coff_header_opt.major_os_system_version = m_data.GetU16(offset_ptr); 452 m_coff_header_opt.minor_os_system_version = m_data.GetU16(offset_ptr); 453 m_coff_header_opt.major_image_version = m_data.GetU16(offset_ptr); 454 m_coff_header_opt.minor_image_version = m_data.GetU16(offset_ptr); 455 m_coff_header_opt.major_subsystem_version = m_data.GetU16(offset_ptr); 456 m_coff_header_opt.minor_subsystem_version = m_data.GetU16(offset_ptr); 457 m_coff_header_opt.reserved1 = m_data.GetU32(offset_ptr); 458 m_coff_header_opt.image_size = m_data.GetU32(offset_ptr); 459 m_coff_header_opt.header_size = m_data.GetU32(offset_ptr); 460 m_coff_header_opt.checksum = m_data.GetU32(offset_ptr); 461 m_coff_header_opt.subsystem = m_data.GetU16(offset_ptr); 462 m_coff_header_opt.dll_flags = m_data.GetU16(offset_ptr); 463 m_coff_header_opt.stack_reserve_size = 464 m_data.GetMaxU64(offset_ptr, addr_byte_size); 465 m_coff_header_opt.stack_commit_size = 466 m_data.GetMaxU64(offset_ptr, addr_byte_size); 467 m_coff_header_opt.heap_reserve_size = 468 m_data.GetMaxU64(offset_ptr, addr_byte_size); 469 m_coff_header_opt.heap_commit_size = 470 m_data.GetMaxU64(offset_ptr, addr_byte_size); 471 m_coff_header_opt.loader_flags = m_data.GetU32(offset_ptr); 472 uint32_t num_data_dir_entries = m_data.GetU32(offset_ptr); 473 m_coff_header_opt.data_dirs.clear(); 474 m_coff_header_opt.data_dirs.resize(num_data_dir_entries); 475 uint32_t i; 476 for (i = 0; i < num_data_dir_entries; i++) { 477 m_coff_header_opt.data_dirs[i].vmaddr = m_data.GetU32(offset_ptr); 478 m_coff_header_opt.data_dirs[i].vmsize = m_data.GetU32(offset_ptr); 479 } 480 481 m_image_base = m_coff_header_opt.image_base; 482 } 483 } 484 } 485 // Make sure we are on track for section data which follows 486 *offset_ptr = end_offset; 487 return success; 488 } 489 490 uint32_t ObjectFilePECOFF::GetRVA(const Address &addr) const { 491 return addr.GetFileAddress() - m_image_base; 492 } 493 494 Address ObjectFilePECOFF::GetAddress(uint32_t rva) { 495 SectionList *sect_list = GetSectionList(); 496 if (!sect_list) 497 return Address(GetFileAddress(rva)); 498 499 return Address(GetFileAddress(rva), sect_list); 500 } 501 502 lldb::addr_t ObjectFilePECOFF::GetFileAddress(uint32_t rva) const { 503 return m_image_base + rva; 504 } 505 506 DataExtractor ObjectFilePECOFF::ReadImageData(uint32_t offset, size_t size) { 507 if (!size) 508 return {}; 509 510 if (m_data.ValidOffsetForDataOfSize(offset, size)) 511 return DataExtractor(m_data, offset, size); 512 513 ProcessSP process_sp(m_process_wp.lock()); 514 DataExtractor data; 515 if (process_sp) { 516 auto data_up = std::make_unique<DataBufferHeap>(size, 0); 517 Status readmem_error; 518 size_t bytes_read = 519 process_sp->ReadMemory(m_image_base + offset, data_up->GetBytes(), 520 data_up->GetByteSize(), readmem_error); 521 if (bytes_read == size) { 522 DataBufferSP buffer_sp(data_up.release()); 523 data.SetData(buffer_sp, 0, buffer_sp->GetByteSize()); 524 } 525 } 526 return data; 527 } 528 529 DataExtractor ObjectFilePECOFF::ReadImageDataByRVA(uint32_t rva, size_t size) { 530 Address addr = GetAddress(rva); 531 SectionSP sect = addr.GetSection(); 532 if (!sect) 533 return {}; 534 rva = sect->GetFileOffset() + addr.GetOffset(); 535 536 return ReadImageData(rva, size); 537 } 538 539 // ParseSectionHeaders 540 bool ObjectFilePECOFF::ParseSectionHeaders( 541 uint32_t section_header_data_offset) { 542 const uint32_t nsects = m_coff_header.nsects; 543 m_sect_headers.clear(); 544 545 if (nsects > 0) { 546 const size_t section_header_byte_size = nsects * sizeof(section_header_t); 547 DataExtractor section_header_data = 548 ReadImageData(section_header_data_offset, section_header_byte_size); 549 550 lldb::offset_t offset = 0; 551 if (section_header_data.ValidOffsetForDataOfSize( 552 offset, section_header_byte_size)) { 553 m_sect_headers.resize(nsects); 554 555 for (uint32_t idx = 0; idx < nsects; ++idx) { 556 const void *name_data = section_header_data.GetData(&offset, 8); 557 if (name_data) { 558 memcpy(m_sect_headers[idx].name, name_data, 8); 559 m_sect_headers[idx].vmsize = section_header_data.GetU32(&offset); 560 m_sect_headers[idx].vmaddr = section_header_data.GetU32(&offset); 561 m_sect_headers[idx].size = section_header_data.GetU32(&offset); 562 m_sect_headers[idx].offset = section_header_data.GetU32(&offset); 563 m_sect_headers[idx].reloff = section_header_data.GetU32(&offset); 564 m_sect_headers[idx].lineoff = section_header_data.GetU32(&offset); 565 m_sect_headers[idx].nreloc = section_header_data.GetU16(&offset); 566 m_sect_headers[idx].nline = section_header_data.GetU16(&offset); 567 m_sect_headers[idx].flags = section_header_data.GetU32(&offset); 568 } 569 } 570 } 571 } 572 573 return !m_sect_headers.empty(); 574 } 575 576 llvm::StringRef ObjectFilePECOFF::GetSectionName(const section_header_t §) { 577 llvm::StringRef hdr_name(sect.name, llvm::array_lengthof(sect.name)); 578 hdr_name = hdr_name.split('\0').first; 579 if (hdr_name.consume_front("/")) { 580 lldb::offset_t stroff; 581 if (!to_integer(hdr_name, stroff, 10)) 582 return ""; 583 lldb::offset_t string_file_offset = 584 m_coff_header.symoff + (m_coff_header.nsyms * 18) + stroff; 585 if (const char *name = m_data.GetCStr(&string_file_offset)) 586 return name; 587 return ""; 588 } 589 return hdr_name; 590 } 591 592 // GetNListSymtab 593 Symtab *ObjectFilePECOFF::GetSymtab() { 594 ModuleSP module_sp(GetModule()); 595 if (module_sp) { 596 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 597 if (m_symtab_up == nullptr) { 598 SectionList *sect_list = GetSectionList(); 599 m_symtab_up = std::make_unique<Symtab>(this); 600 std::lock_guard<std::recursive_mutex> guard(m_symtab_up->GetMutex()); 601 602 const uint32_t num_syms = m_coff_header.nsyms; 603 604 if (m_file && num_syms > 0 && m_coff_header.symoff > 0) { 605 const uint32_t symbol_size = 18; 606 const size_t symbol_data_size = num_syms * symbol_size; 607 // Include the 4-byte string table size at the end of the symbols 608 DataExtractor symtab_data = 609 ReadImageData(m_coff_header.symoff, symbol_data_size + 4); 610 lldb::offset_t offset = symbol_data_size; 611 const uint32_t strtab_size = symtab_data.GetU32(&offset); 612 if (strtab_size > 0) { 613 DataExtractor strtab_data = ReadImageData( 614 m_coff_header.symoff + symbol_data_size, strtab_size); 615 616 offset = 0; 617 std::string symbol_name; 618 Symbol *symbols = m_symtab_up->Resize(num_syms); 619 for (uint32_t i = 0; i < num_syms; ++i) { 620 coff_symbol_t symbol; 621 const uint32_t symbol_offset = offset; 622 const char *symbol_name_cstr = nullptr; 623 // If the first 4 bytes of the symbol string are zero, then they 624 // are followed by a 4-byte string table offset. Else these 625 // 8 bytes contain the symbol name 626 if (symtab_data.GetU32(&offset) == 0) { 627 // Long string that doesn't fit into the symbol table name, so 628 // now we must read the 4 byte string table offset 629 uint32_t strtab_offset = symtab_data.GetU32(&offset); 630 symbol_name_cstr = strtab_data.PeekCStr(strtab_offset); 631 symbol_name.assign(symbol_name_cstr); 632 } else { 633 // Short string that fits into the symbol table name which is 8 634 // bytes 635 offset += sizeof(symbol.name) - 4; // Skip remaining 636 symbol_name_cstr = symtab_data.PeekCStr(symbol_offset); 637 if (symbol_name_cstr == nullptr) 638 break; 639 symbol_name.assign(symbol_name_cstr, sizeof(symbol.name)); 640 } 641 symbol.value = symtab_data.GetU32(&offset); 642 symbol.sect = symtab_data.GetU16(&offset); 643 symbol.type = symtab_data.GetU16(&offset); 644 symbol.storage = symtab_data.GetU8(&offset); 645 symbol.naux = symtab_data.GetU8(&offset); 646 symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); 647 if ((int16_t)symbol.sect >= 1) { 648 Address symbol_addr(sect_list->FindSectionByID(symbol.sect), 649 symbol.value); 650 symbols[i].GetAddressRef() = symbol_addr; 651 symbols[i].SetType(MapSymbolType(symbol.type)); 652 } 653 654 if (symbol.naux > 0) { 655 i += symbol.naux; 656 offset += symbol.naux * symbol_size; 657 } 658 } 659 } 660 } 661 662 // Read export header 663 if (coff_data_dir_export_table < m_coff_header_opt.data_dirs.size() && 664 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmsize > 0 && 665 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr > 0) { 666 export_directory_entry export_table; 667 uint32_t data_start = 668 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr; 669 670 DataExtractor symtab_data = ReadImageDataByRVA( 671 data_start, m_coff_header_opt.data_dirs[0].vmsize); 672 lldb::offset_t offset = 0; 673 674 // Read export_table header 675 export_table.characteristics = symtab_data.GetU32(&offset); 676 export_table.time_date_stamp = symtab_data.GetU32(&offset); 677 export_table.major_version = symtab_data.GetU16(&offset); 678 export_table.minor_version = symtab_data.GetU16(&offset); 679 export_table.name = symtab_data.GetU32(&offset); 680 export_table.base = symtab_data.GetU32(&offset); 681 export_table.number_of_functions = symtab_data.GetU32(&offset); 682 export_table.number_of_names = symtab_data.GetU32(&offset); 683 export_table.address_of_functions = symtab_data.GetU32(&offset); 684 export_table.address_of_names = symtab_data.GetU32(&offset); 685 export_table.address_of_name_ordinals = symtab_data.GetU32(&offset); 686 687 bool has_ordinal = export_table.address_of_name_ordinals != 0; 688 689 lldb::offset_t name_offset = export_table.address_of_names - data_start; 690 lldb::offset_t name_ordinal_offset = 691 export_table.address_of_name_ordinals - data_start; 692 693 Symbol *symbols = m_symtab_up->Resize(export_table.number_of_names); 694 695 std::string symbol_name; 696 697 // Read each export table entry 698 for (size_t i = 0; i < export_table.number_of_names; ++i) { 699 uint32_t name_ordinal = 700 has_ordinal ? symtab_data.GetU16(&name_ordinal_offset) : i; 701 uint32_t name_address = symtab_data.GetU32(&name_offset); 702 703 const char *symbol_name_cstr = 704 symtab_data.PeekCStr(name_address - data_start); 705 symbol_name.assign(symbol_name_cstr); 706 707 lldb::offset_t function_offset = export_table.address_of_functions - 708 data_start + 709 sizeof(uint32_t) * name_ordinal; 710 uint32_t function_rva = symtab_data.GetU32(&function_offset); 711 712 Address symbol_addr(m_coff_header_opt.image_base + function_rva, 713 sect_list); 714 symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); 715 symbols[i].GetAddressRef() = symbol_addr; 716 symbols[i].SetType(lldb::eSymbolTypeCode); 717 symbols[i].SetDebug(true); 718 } 719 } 720 m_symtab_up->CalculateSymbolSizes(); 721 } 722 } 723 return m_symtab_up.get(); 724 } 725 726 std::unique_ptr<CallFrameInfo> ObjectFilePECOFF::CreateCallFrameInfo() { 727 if (coff_data_dir_exception_table >= m_coff_header_opt.data_dirs.size()) 728 return {}; 729 730 data_directory data_dir_exception = 731 m_coff_header_opt.data_dirs[coff_data_dir_exception_table]; 732 if (!data_dir_exception.vmaddr) 733 return {}; 734 735 if (m_coff_header.machine != llvm::COFF::IMAGE_FILE_MACHINE_AMD64) 736 return {}; 737 738 return std::make_unique<PECallFrameInfo>(*this, data_dir_exception.vmaddr, 739 data_dir_exception.vmsize); 740 } 741 742 bool ObjectFilePECOFF::IsStripped() { 743 // TODO: determine this for COFF 744 return false; 745 } 746 747 SectionType ObjectFilePECOFF::GetSectionType(llvm::StringRef sect_name, 748 const section_header_t §) { 749 ConstString const_sect_name(sect_name); 750 static ConstString g_code_sect_name(".code"); 751 static ConstString g_CODE_sect_name("CODE"); 752 static ConstString g_data_sect_name(".data"); 753 static ConstString g_DATA_sect_name("DATA"); 754 static ConstString g_bss_sect_name(".bss"); 755 static ConstString g_BSS_sect_name("BSS"); 756 757 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_CODE && 758 ((const_sect_name == g_code_sect_name) || 759 (const_sect_name == g_CODE_sect_name))) { 760 return eSectionTypeCode; 761 } 762 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA && 763 ((const_sect_name == g_data_sect_name) || 764 (const_sect_name == g_DATA_sect_name))) { 765 if (sect.size == 0 && sect.offset == 0) 766 return eSectionTypeZeroFill; 767 else 768 return eSectionTypeData; 769 } 770 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA && 771 ((const_sect_name == g_bss_sect_name) || 772 (const_sect_name == g_BSS_sect_name))) { 773 if (sect.size == 0) 774 return eSectionTypeZeroFill; 775 else 776 return eSectionTypeData; 777 } 778 779 SectionType section_type = 780 llvm::StringSwitch<SectionType>(sect_name) 781 .Case(".debug", eSectionTypeDebug) 782 .Case(".stabstr", eSectionTypeDataCString) 783 .Case(".reloc", eSectionTypeOther) 784 .Case(".debug_abbrev", eSectionTypeDWARFDebugAbbrev) 785 .Case(".debug_aranges", eSectionTypeDWARFDebugAranges) 786 .Case(".debug_frame", eSectionTypeDWARFDebugFrame) 787 .Case(".debug_info", eSectionTypeDWARFDebugInfo) 788 .Case(".debug_line", eSectionTypeDWARFDebugLine) 789 .Case(".debug_loc", eSectionTypeDWARFDebugLoc) 790 .Case(".debug_loclists", eSectionTypeDWARFDebugLocLists) 791 .Case(".debug_macinfo", eSectionTypeDWARFDebugMacInfo) 792 .Case(".debug_names", eSectionTypeDWARFDebugNames) 793 .Case(".debug_pubnames", eSectionTypeDWARFDebugPubNames) 794 .Case(".debug_pubtypes", eSectionTypeDWARFDebugPubTypes) 795 .Case(".debug_ranges", eSectionTypeDWARFDebugRanges) 796 .Case(".debug_str", eSectionTypeDWARFDebugStr) 797 .Case(".debug_types", eSectionTypeDWARFDebugTypes) 798 // .eh_frame can be truncated to 8 chars. 799 .Cases(".eh_frame", ".eh_fram", eSectionTypeEHFrame) 800 .Case(".gosymtab", eSectionTypeGoSymtab) 801 .Default(eSectionTypeInvalid); 802 if (section_type != eSectionTypeInvalid) 803 return section_type; 804 805 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_CODE) 806 return eSectionTypeCode; 807 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA) 808 return eSectionTypeData; 809 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA) { 810 if (sect.size == 0) 811 return eSectionTypeZeroFill; 812 else 813 return eSectionTypeData; 814 } 815 return eSectionTypeOther; 816 } 817 818 void ObjectFilePECOFF::CreateSections(SectionList &unified_section_list) { 819 if (m_sections_up) 820 return; 821 m_sections_up = std::make_unique<SectionList>(); 822 ModuleSP module_sp(GetModule()); 823 if (module_sp) { 824 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 825 826 SectionSP header_sp = std::make_shared<Section>( 827 module_sp, this, ~user_id_t(0), ConstString("PECOFF header"), 828 eSectionTypeOther, m_coff_header_opt.image_base, 829 m_coff_header_opt.header_size, 830 /*file_offset*/ 0, m_coff_header_opt.header_size, 831 m_coff_header_opt.sect_alignment, 832 /*flags*/ 0); 833 header_sp->SetPermissions(ePermissionsReadable); 834 m_sections_up->AddSection(header_sp); 835 unified_section_list.AddSection(header_sp); 836 837 const uint32_t nsects = m_sect_headers.size(); 838 ModuleSP module_sp(GetModule()); 839 for (uint32_t idx = 0; idx < nsects; ++idx) { 840 llvm::StringRef sect_name = GetSectionName(m_sect_headers[idx]); 841 ConstString const_sect_name(sect_name); 842 SectionType section_type = GetSectionType(sect_name, m_sect_headers[idx]); 843 844 SectionSP section_sp(new Section( 845 module_sp, // Module to which this section belongs 846 this, // Object file to which this section belongs 847 idx + 1, // Section ID is the 1 based section index. 848 const_sect_name, // Name of this section 849 section_type, 850 m_coff_header_opt.image_base + 851 m_sect_headers[idx].vmaddr, // File VM address == addresses as 852 // they are found in the object file 853 m_sect_headers[idx].vmsize, // VM size in bytes of this section 854 m_sect_headers[idx] 855 .offset, // Offset to the data for this section in the file 856 m_sect_headers[idx] 857 .size, // Size in bytes of this section as found in the file 858 m_coff_header_opt.sect_alignment, // Section alignment 859 m_sect_headers[idx].flags)); // Flags for this section 860 861 uint32_t permissions = 0; 862 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_EXECUTE) 863 permissions |= ePermissionsExecutable; 864 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_READ) 865 permissions |= ePermissionsReadable; 866 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_WRITE) 867 permissions |= ePermissionsWritable; 868 section_sp->SetPermissions(permissions); 869 870 m_sections_up->AddSection(section_sp); 871 unified_section_list.AddSection(section_sp); 872 } 873 } 874 } 875 876 UUID ObjectFilePECOFF::GetUUID() { 877 if (m_uuid.IsValid()) 878 return m_uuid; 879 880 if (!CreateBinary()) 881 return UUID(); 882 883 m_uuid = GetCoffUUID(*m_binary); 884 return m_uuid; 885 } 886 887 uint32_t ObjectFilePECOFF::ParseDependentModules() { 888 ModuleSP module_sp(GetModule()); 889 if (!module_sp) 890 return 0; 891 892 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 893 if (m_deps_filespec) 894 return m_deps_filespec->GetSize(); 895 896 // Cache coff binary if it is not done yet. 897 if (!CreateBinary()) 898 return 0; 899 900 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 901 LLDB_LOG(log, "this = {0}, module = {1} ({2}), file = {3}, binary = {4}", 902 this, GetModule().get(), GetModule()->GetSpecificationDescription(), 903 m_file.GetPath(), m_binary.get()); 904 905 m_deps_filespec = FileSpecList(); 906 907 for (const auto &entry : m_binary->import_directories()) { 908 llvm::StringRef dll_name; 909 // Report a bogus entry. 910 if (llvm::Error e = entry.getName(dll_name)) { 911 LLDB_LOGF(log, 912 "ObjectFilePECOFF::ParseDependentModules() - failed to get " 913 "import directory entry name: %s", 914 llvm::toString(std::move(e)).c_str()); 915 continue; 916 } 917 918 // At this moment we only have the base name of the DLL. The full path can 919 // only be seen after the dynamic loading. Our best guess is Try to get it 920 // with the help of the object file's directory. 921 llvm::SmallString<128> dll_fullpath; 922 FileSpec dll_specs(dll_name); 923 dll_specs.GetDirectory().SetString(m_file.GetDirectory().GetCString()); 924 925 if (!llvm::sys::fs::real_path(dll_specs.GetPath(), dll_fullpath)) 926 m_deps_filespec->EmplaceBack(dll_fullpath); 927 else { 928 // Known DLLs or DLL not found in the object file directory. 929 m_deps_filespec->EmplaceBack(dll_name); 930 } 931 } 932 return m_deps_filespec->GetSize(); 933 } 934 935 uint32_t ObjectFilePECOFF::GetDependentModules(FileSpecList &files) { 936 auto num_modules = ParseDependentModules(); 937 auto original_size = files.GetSize(); 938 939 for (unsigned i = 0; i < num_modules; ++i) 940 files.AppendIfUnique(m_deps_filespec->GetFileSpecAtIndex(i)); 941 942 return files.GetSize() - original_size; 943 } 944 945 lldb_private::Address ObjectFilePECOFF::GetEntryPointAddress() { 946 if (m_entry_point_address.IsValid()) 947 return m_entry_point_address; 948 949 if (!ParseHeader() || !IsExecutable()) 950 return m_entry_point_address; 951 952 SectionList *section_list = GetSectionList(); 953 addr_t file_addr = m_coff_header_opt.entry + m_coff_header_opt.image_base; 954 955 if (!section_list) 956 m_entry_point_address.SetOffset(file_addr); 957 else 958 m_entry_point_address.ResolveAddressUsingFileSections(file_addr, 959 section_list); 960 return m_entry_point_address; 961 } 962 963 Address ObjectFilePECOFF::GetBaseAddress() { 964 return Address(GetSectionList()->GetSectionAtIndex(0), 0); 965 } 966 967 // Dump 968 // 969 // Dump the specifics of the runtime file container (such as any headers 970 // segments, sections, etc). 971 void ObjectFilePECOFF::Dump(Stream *s) { 972 ModuleSP module_sp(GetModule()); 973 if (module_sp) { 974 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 975 s->Printf("%p: ", static_cast<void *>(this)); 976 s->Indent(); 977 s->PutCString("ObjectFilePECOFF"); 978 979 ArchSpec header_arch = GetArchitecture(); 980 981 *s << ", file = '" << m_file 982 << "', arch = " << header_arch.GetArchitectureName() << "\n"; 983 984 SectionList *sections = GetSectionList(); 985 if (sections) 986 sections->Dump(s->AsRawOstream(), s->GetIndentLevel(), nullptr, true, 987 UINT32_MAX); 988 989 if (m_symtab_up) 990 m_symtab_up->Dump(s, nullptr, eSortOrderNone); 991 992 if (m_dos_header.e_magic) 993 DumpDOSHeader(s, m_dos_header); 994 if (m_coff_header.machine) { 995 DumpCOFFHeader(s, m_coff_header); 996 if (m_coff_header.hdrsize) 997 DumpOptCOFFHeader(s, m_coff_header_opt); 998 } 999 s->EOL(); 1000 DumpSectionHeaders(s); 1001 s->EOL(); 1002 1003 DumpDependentModules(s); 1004 s->EOL(); 1005 } 1006 } 1007 1008 // DumpDOSHeader 1009 // 1010 // Dump the MS-DOS header to the specified output stream 1011 void ObjectFilePECOFF::DumpDOSHeader(Stream *s, const dos_header_t &header) { 1012 s->PutCString("MSDOS Header\n"); 1013 s->Printf(" e_magic = 0x%4.4x\n", header.e_magic); 1014 s->Printf(" e_cblp = 0x%4.4x\n", header.e_cblp); 1015 s->Printf(" e_cp = 0x%4.4x\n", header.e_cp); 1016 s->Printf(" e_crlc = 0x%4.4x\n", header.e_crlc); 1017 s->Printf(" e_cparhdr = 0x%4.4x\n", header.e_cparhdr); 1018 s->Printf(" e_minalloc = 0x%4.4x\n", header.e_minalloc); 1019 s->Printf(" e_maxalloc = 0x%4.4x\n", header.e_maxalloc); 1020 s->Printf(" e_ss = 0x%4.4x\n", header.e_ss); 1021 s->Printf(" e_sp = 0x%4.4x\n", header.e_sp); 1022 s->Printf(" e_csum = 0x%4.4x\n", header.e_csum); 1023 s->Printf(" e_ip = 0x%4.4x\n", header.e_ip); 1024 s->Printf(" e_cs = 0x%4.4x\n", header.e_cs); 1025 s->Printf(" e_lfarlc = 0x%4.4x\n", header.e_lfarlc); 1026 s->Printf(" e_ovno = 0x%4.4x\n", header.e_ovno); 1027 s->Printf(" e_res[4] = { 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x }\n", 1028 header.e_res[0], header.e_res[1], header.e_res[2], header.e_res[3]); 1029 s->Printf(" e_oemid = 0x%4.4x\n", header.e_oemid); 1030 s->Printf(" e_oeminfo = 0x%4.4x\n", header.e_oeminfo); 1031 s->Printf(" e_res2[10] = { 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, " 1032 "0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x }\n", 1033 header.e_res2[0], header.e_res2[1], header.e_res2[2], 1034 header.e_res2[3], header.e_res2[4], header.e_res2[5], 1035 header.e_res2[6], header.e_res2[7], header.e_res2[8], 1036 header.e_res2[9]); 1037 s->Printf(" e_lfanew = 0x%8.8x\n", header.e_lfanew); 1038 } 1039 1040 // DumpCOFFHeader 1041 // 1042 // Dump the COFF header to the specified output stream 1043 void ObjectFilePECOFF::DumpCOFFHeader(Stream *s, const coff_header_t &header) { 1044 s->PutCString("COFF Header\n"); 1045 s->Printf(" machine = 0x%4.4x\n", header.machine); 1046 s->Printf(" nsects = 0x%4.4x\n", header.nsects); 1047 s->Printf(" modtime = 0x%8.8x\n", header.modtime); 1048 s->Printf(" symoff = 0x%8.8x\n", header.symoff); 1049 s->Printf(" nsyms = 0x%8.8x\n", header.nsyms); 1050 s->Printf(" hdrsize = 0x%4.4x\n", header.hdrsize); 1051 } 1052 1053 // DumpOptCOFFHeader 1054 // 1055 // Dump the optional COFF header to the specified output stream 1056 void ObjectFilePECOFF::DumpOptCOFFHeader(Stream *s, 1057 const coff_opt_header_t &header) { 1058 s->PutCString("Optional COFF Header\n"); 1059 s->Printf(" magic = 0x%4.4x\n", header.magic); 1060 s->Printf(" major_linker_version = 0x%2.2x\n", 1061 header.major_linker_version); 1062 s->Printf(" minor_linker_version = 0x%2.2x\n", 1063 header.minor_linker_version); 1064 s->Printf(" code_size = 0x%8.8x\n", header.code_size); 1065 s->Printf(" data_size = 0x%8.8x\n", header.data_size); 1066 s->Printf(" bss_size = 0x%8.8x\n", header.bss_size); 1067 s->Printf(" entry = 0x%8.8x\n", header.entry); 1068 s->Printf(" code_offset = 0x%8.8x\n", header.code_offset); 1069 s->Printf(" data_offset = 0x%8.8x\n", header.data_offset); 1070 s->Printf(" image_base = 0x%16.16" PRIx64 "\n", 1071 header.image_base); 1072 s->Printf(" sect_alignment = 0x%8.8x\n", header.sect_alignment); 1073 s->Printf(" file_alignment = 0x%8.8x\n", header.file_alignment); 1074 s->Printf(" major_os_system_version = 0x%4.4x\n", 1075 header.major_os_system_version); 1076 s->Printf(" minor_os_system_version = 0x%4.4x\n", 1077 header.minor_os_system_version); 1078 s->Printf(" major_image_version = 0x%4.4x\n", 1079 header.major_image_version); 1080 s->Printf(" minor_image_version = 0x%4.4x\n", 1081 header.minor_image_version); 1082 s->Printf(" major_subsystem_version = 0x%4.4x\n", 1083 header.major_subsystem_version); 1084 s->Printf(" minor_subsystem_version = 0x%4.4x\n", 1085 header.minor_subsystem_version); 1086 s->Printf(" reserved1 = 0x%8.8x\n", header.reserved1); 1087 s->Printf(" image_size = 0x%8.8x\n", header.image_size); 1088 s->Printf(" header_size = 0x%8.8x\n", header.header_size); 1089 s->Printf(" checksum = 0x%8.8x\n", header.checksum); 1090 s->Printf(" subsystem = 0x%4.4x\n", header.subsystem); 1091 s->Printf(" dll_flags = 0x%4.4x\n", header.dll_flags); 1092 s->Printf(" stack_reserve_size = 0x%16.16" PRIx64 "\n", 1093 header.stack_reserve_size); 1094 s->Printf(" stack_commit_size = 0x%16.16" PRIx64 "\n", 1095 header.stack_commit_size); 1096 s->Printf(" heap_reserve_size = 0x%16.16" PRIx64 "\n", 1097 header.heap_reserve_size); 1098 s->Printf(" heap_commit_size = 0x%16.16" PRIx64 "\n", 1099 header.heap_commit_size); 1100 s->Printf(" loader_flags = 0x%8.8x\n", header.loader_flags); 1101 s->Printf(" num_data_dir_entries = 0x%8.8x\n", 1102 (uint32_t)header.data_dirs.size()); 1103 uint32_t i; 1104 for (i = 0; i < header.data_dirs.size(); i++) { 1105 s->Printf(" data_dirs[%2u] vmaddr = 0x%8.8x, vmsize = 0x%8.8x\n", i, 1106 header.data_dirs[i].vmaddr, header.data_dirs[i].vmsize); 1107 } 1108 } 1109 // DumpSectionHeader 1110 // 1111 // Dump a single ELF section header to the specified output stream 1112 void ObjectFilePECOFF::DumpSectionHeader(Stream *s, 1113 const section_header_t &sh) { 1114 std::string name = std::string(GetSectionName(sh)); 1115 s->Printf("%-16s 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%4.4x " 1116 "0x%4.4x 0x%8.8x\n", 1117 name.c_str(), sh.vmaddr, sh.vmsize, sh.offset, sh.size, sh.reloff, 1118 sh.lineoff, sh.nreloc, sh.nline, sh.flags); 1119 } 1120 1121 // DumpSectionHeaders 1122 // 1123 // Dump all of the ELF section header to the specified output stream 1124 void ObjectFilePECOFF::DumpSectionHeaders(Stream *s) { 1125 1126 s->PutCString("Section Headers\n"); 1127 s->PutCString("IDX name vm addr vm size file off file " 1128 "size reloc off line off nreloc nline flags\n"); 1129 s->PutCString("==== ---------------- ---------- ---------- ---------- " 1130 "---------- ---------- ---------- ------ ------ ----------\n"); 1131 1132 uint32_t idx = 0; 1133 SectionHeaderCollIter pos, end = m_sect_headers.end(); 1134 1135 for (pos = m_sect_headers.begin(); pos != end; ++pos, ++idx) { 1136 s->Printf("[%2u] ", idx); 1137 ObjectFilePECOFF::DumpSectionHeader(s, *pos); 1138 } 1139 } 1140 1141 // DumpDependentModules 1142 // 1143 // Dump all of the dependent modules to the specified output stream 1144 void ObjectFilePECOFF::DumpDependentModules(lldb_private::Stream *s) { 1145 auto num_modules = ParseDependentModules(); 1146 if (num_modules > 0) { 1147 s->PutCString("Dependent Modules\n"); 1148 for (unsigned i = 0; i < num_modules; ++i) { 1149 auto spec = m_deps_filespec->GetFileSpecAtIndex(i); 1150 s->Printf(" %s\n", spec.GetFilename().GetCString()); 1151 } 1152 } 1153 } 1154 1155 bool ObjectFilePECOFF::IsWindowsSubsystem() { 1156 switch (m_coff_header_opt.subsystem) { 1157 case llvm::COFF::IMAGE_SUBSYSTEM_NATIVE: 1158 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_GUI: 1159 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_CUI: 1160 case llvm::COFF::IMAGE_SUBSYSTEM_NATIVE_WINDOWS: 1161 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_CE_GUI: 1162 case llvm::COFF::IMAGE_SUBSYSTEM_XBOX: 1163 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_BOOT_APPLICATION: 1164 return true; 1165 default: 1166 return false; 1167 } 1168 } 1169 1170 ArchSpec ObjectFilePECOFF::GetArchitecture() { 1171 uint16_t machine = m_coff_header.machine; 1172 switch (machine) { 1173 default: 1174 break; 1175 case llvm::COFF::IMAGE_FILE_MACHINE_AMD64: 1176 case llvm::COFF::IMAGE_FILE_MACHINE_I386: 1177 case llvm::COFF::IMAGE_FILE_MACHINE_POWERPC: 1178 case llvm::COFF::IMAGE_FILE_MACHINE_POWERPCFP: 1179 case llvm::COFF::IMAGE_FILE_MACHINE_ARM: 1180 case llvm::COFF::IMAGE_FILE_MACHINE_ARMNT: 1181 case llvm::COFF::IMAGE_FILE_MACHINE_THUMB: 1182 case llvm::COFF::IMAGE_FILE_MACHINE_ARM64: 1183 ArchSpec arch; 1184 arch.SetArchitecture(eArchTypeCOFF, machine, LLDB_INVALID_CPUTYPE, 1185 IsWindowsSubsystem() ? llvm::Triple::Win32 1186 : llvm::Triple::UnknownOS); 1187 return arch; 1188 } 1189 return ArchSpec(); 1190 } 1191 1192 ObjectFile::Type ObjectFilePECOFF::CalculateType() { 1193 if (m_coff_header.machine != 0) { 1194 if ((m_coff_header.flags & llvm::COFF::IMAGE_FILE_DLL) == 0) 1195 return eTypeExecutable; 1196 else 1197 return eTypeSharedLibrary; 1198 } 1199 return eTypeExecutable; 1200 } 1201 1202 ObjectFile::Strata ObjectFilePECOFF::CalculateStrata() { return eStrataUser; } 1203