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 if (m_file) { 547 // A bit of a hack, but we intend to write to this buffer, so we can't 548 // mmap it. 549 auto buffer_sp = MapFileData(m_file, size, offset); 550 return DataExtractor(buffer_sp, GetByteOrder(), GetAddressByteSize()); 551 } 552 ProcessSP process_sp(m_process_wp.lock()); 553 DataExtractor data; 554 if (process_sp) { 555 auto data_up = std::make_unique<DataBufferHeap>(size, 0); 556 Status readmem_error; 557 size_t bytes_read = 558 process_sp->ReadMemory(m_image_base + offset, data_up->GetBytes(), 559 data_up->GetByteSize(), readmem_error); 560 if (bytes_read == size) { 561 DataBufferSP buffer_sp(data_up.release()); 562 data.SetData(buffer_sp, 0, buffer_sp->GetByteSize()); 563 } 564 } 565 return data; 566 } 567 568 DataExtractor ObjectFilePECOFF::ReadImageDataByRVA(uint32_t rva, size_t size) { 569 Address addr = GetAddress(rva); 570 SectionSP sect = addr.GetSection(); 571 if (!sect) 572 return {}; 573 rva = sect->GetFileOffset() + addr.GetOffset(); 574 575 return ReadImageData(rva, size); 576 } 577 578 // ParseSectionHeaders 579 bool ObjectFilePECOFF::ParseSectionHeaders( 580 uint32_t section_header_data_offset) { 581 const uint32_t nsects = m_coff_header.nsects; 582 m_sect_headers.clear(); 583 584 if (nsects > 0) { 585 const size_t section_header_byte_size = nsects * sizeof(section_header_t); 586 DataExtractor section_header_data = 587 ReadImageData(section_header_data_offset, section_header_byte_size); 588 589 lldb::offset_t offset = 0; 590 if (section_header_data.ValidOffsetForDataOfSize( 591 offset, section_header_byte_size)) { 592 m_sect_headers.resize(nsects); 593 594 for (uint32_t idx = 0; idx < nsects; ++idx) { 595 const void *name_data = section_header_data.GetData(&offset, 8); 596 if (name_data) { 597 memcpy(m_sect_headers[idx].name, name_data, 8); 598 m_sect_headers[idx].vmsize = section_header_data.GetU32(&offset); 599 m_sect_headers[idx].vmaddr = section_header_data.GetU32(&offset); 600 m_sect_headers[idx].size = section_header_data.GetU32(&offset); 601 m_sect_headers[idx].offset = section_header_data.GetU32(&offset); 602 m_sect_headers[idx].reloff = section_header_data.GetU32(&offset); 603 m_sect_headers[idx].lineoff = section_header_data.GetU32(&offset); 604 m_sect_headers[idx].nreloc = section_header_data.GetU16(&offset); 605 m_sect_headers[idx].nline = section_header_data.GetU16(&offset); 606 m_sect_headers[idx].flags = section_header_data.GetU32(&offset); 607 } 608 } 609 } 610 } 611 612 return !m_sect_headers.empty(); 613 } 614 615 llvm::StringRef ObjectFilePECOFF::GetSectionName(const section_header_t §) { 616 llvm::StringRef hdr_name(sect.name, llvm::array_lengthof(sect.name)); 617 hdr_name = hdr_name.split('\0').first; 618 if (hdr_name.consume_front("/")) { 619 lldb::offset_t stroff; 620 if (!to_integer(hdr_name, stroff, 10)) 621 return ""; 622 lldb::offset_t string_file_offset = 623 m_coff_header.symoff + (m_coff_header.nsyms * 18) + stroff; 624 if (const char *name = m_data.GetCStr(&string_file_offset)) 625 return name; 626 return ""; 627 } 628 return hdr_name; 629 } 630 631 // GetNListSymtab 632 Symtab *ObjectFilePECOFF::GetSymtab() { 633 ModuleSP module_sp(GetModule()); 634 if (module_sp) { 635 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 636 if (m_symtab_up == nullptr) { 637 SectionList *sect_list = GetSectionList(); 638 m_symtab_up = std::make_unique<Symtab>(this); 639 std::lock_guard<std::recursive_mutex> guard(m_symtab_up->GetMutex()); 640 641 const uint32_t num_syms = m_coff_header.nsyms; 642 643 if (m_file && num_syms > 0 && m_coff_header.symoff > 0) { 644 const uint32_t symbol_size = 18; 645 const size_t symbol_data_size = num_syms * symbol_size; 646 // Include the 4-byte string table size at the end of the symbols 647 DataExtractor symtab_data = 648 ReadImageData(m_coff_header.symoff, symbol_data_size + 4); 649 lldb::offset_t offset = symbol_data_size; 650 const uint32_t strtab_size = symtab_data.GetU32(&offset); 651 if (strtab_size > 0) { 652 DataExtractor strtab_data = ReadImageData( 653 m_coff_header.symoff + symbol_data_size, strtab_size); 654 655 // First 4 bytes should be zeroed after strtab_size has been read, 656 // because it is used as offset 0 to encode a NULL string. 657 uint32_t *strtab_data_start = const_cast<uint32_t *>( 658 reinterpret_cast<const uint32_t *>(strtab_data.GetDataStart())); 659 ::memset(&strtab_data_start[0], 0, sizeof(uint32_t)); 660 661 offset = 0; 662 std::string symbol_name; 663 Symbol *symbols = m_symtab_up->Resize(num_syms); 664 for (uint32_t i = 0; i < num_syms; ++i) { 665 coff_symbol_t symbol; 666 const uint32_t symbol_offset = offset; 667 const char *symbol_name_cstr = nullptr; 668 // If the first 4 bytes of the symbol string are zero, then they 669 // are followed by a 4-byte string table offset. Else these 670 // 8 bytes contain the symbol name 671 if (symtab_data.GetU32(&offset) == 0) { 672 // Long string that doesn't fit into the symbol table name, so 673 // now we must read the 4 byte string table offset 674 uint32_t strtab_offset = symtab_data.GetU32(&offset); 675 symbol_name_cstr = strtab_data.PeekCStr(strtab_offset); 676 symbol_name.assign(symbol_name_cstr); 677 } else { 678 // Short string that fits into the symbol table name which is 8 679 // bytes 680 offset += sizeof(symbol.name) - 4; // Skip remaining 681 symbol_name_cstr = symtab_data.PeekCStr(symbol_offset); 682 if (symbol_name_cstr == nullptr) 683 break; 684 symbol_name.assign(symbol_name_cstr, sizeof(symbol.name)); 685 } 686 symbol.value = symtab_data.GetU32(&offset); 687 symbol.sect = symtab_data.GetU16(&offset); 688 symbol.type = symtab_data.GetU16(&offset); 689 symbol.storage = symtab_data.GetU8(&offset); 690 symbol.naux = symtab_data.GetU8(&offset); 691 symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); 692 if ((int16_t)symbol.sect >= 1) { 693 Address symbol_addr(sect_list->FindSectionByID(symbol.sect), 694 symbol.value); 695 symbols[i].GetAddressRef() = symbol_addr; 696 symbols[i].SetType(MapSymbolType(symbol.type)); 697 } 698 699 if (symbol.naux > 0) { 700 i += symbol.naux; 701 offset += symbol.naux * symbol_size; 702 } 703 } 704 } 705 } 706 707 // Read export header 708 if (coff_data_dir_export_table < m_coff_header_opt.data_dirs.size() && 709 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmsize > 0 && 710 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr > 0) { 711 export_directory_entry export_table; 712 uint32_t data_start = 713 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr; 714 715 DataExtractor symtab_data = ReadImageDataByRVA( 716 data_start, m_coff_header_opt.data_dirs[0].vmsize); 717 lldb::offset_t offset = 0; 718 719 // Read export_table header 720 export_table.characteristics = symtab_data.GetU32(&offset); 721 export_table.time_date_stamp = symtab_data.GetU32(&offset); 722 export_table.major_version = symtab_data.GetU16(&offset); 723 export_table.minor_version = symtab_data.GetU16(&offset); 724 export_table.name = symtab_data.GetU32(&offset); 725 export_table.base = symtab_data.GetU32(&offset); 726 export_table.number_of_functions = symtab_data.GetU32(&offset); 727 export_table.number_of_names = symtab_data.GetU32(&offset); 728 export_table.address_of_functions = symtab_data.GetU32(&offset); 729 export_table.address_of_names = symtab_data.GetU32(&offset); 730 export_table.address_of_name_ordinals = symtab_data.GetU32(&offset); 731 732 bool has_ordinal = export_table.address_of_name_ordinals != 0; 733 734 lldb::offset_t name_offset = export_table.address_of_names - data_start; 735 lldb::offset_t name_ordinal_offset = 736 export_table.address_of_name_ordinals - data_start; 737 738 Symbol *symbols = m_symtab_up->Resize(export_table.number_of_names); 739 740 std::string symbol_name; 741 742 // Read each export table entry 743 for (size_t i = 0; i < export_table.number_of_names; ++i) { 744 uint32_t name_ordinal = 745 has_ordinal ? symtab_data.GetU16(&name_ordinal_offset) : i; 746 uint32_t name_address = symtab_data.GetU32(&name_offset); 747 748 const char *symbol_name_cstr = 749 symtab_data.PeekCStr(name_address - data_start); 750 symbol_name.assign(symbol_name_cstr); 751 752 lldb::offset_t function_offset = export_table.address_of_functions - 753 data_start + 754 sizeof(uint32_t) * name_ordinal; 755 uint32_t function_rva = symtab_data.GetU32(&function_offset); 756 757 Address symbol_addr(m_coff_header_opt.image_base + function_rva, 758 sect_list); 759 symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); 760 symbols[i].GetAddressRef() = symbol_addr; 761 symbols[i].SetType(lldb::eSymbolTypeCode); 762 symbols[i].SetDebug(true); 763 } 764 } 765 m_symtab_up->CalculateSymbolSizes(); 766 } 767 } 768 return m_symtab_up.get(); 769 } 770 771 std::unique_ptr<CallFrameInfo> ObjectFilePECOFF::CreateCallFrameInfo() { 772 if (coff_data_dir_exception_table >= m_coff_header_opt.data_dirs.size()) 773 return {}; 774 775 data_directory data_dir_exception = 776 m_coff_header_opt.data_dirs[coff_data_dir_exception_table]; 777 if (!data_dir_exception.vmaddr) 778 return {}; 779 780 if (m_coff_header.machine != llvm::COFF::IMAGE_FILE_MACHINE_AMD64) 781 return {}; 782 783 return std::make_unique<PECallFrameInfo>(*this, data_dir_exception.vmaddr, 784 data_dir_exception.vmsize); 785 } 786 787 bool ObjectFilePECOFF::IsStripped() { 788 // TODO: determine this for COFF 789 return false; 790 } 791 792 SectionType ObjectFilePECOFF::GetSectionType(llvm::StringRef sect_name, 793 const section_header_t §) { 794 ConstString const_sect_name(sect_name); 795 static ConstString g_code_sect_name(".code"); 796 static ConstString g_CODE_sect_name("CODE"); 797 static ConstString g_data_sect_name(".data"); 798 static ConstString g_DATA_sect_name("DATA"); 799 static ConstString g_bss_sect_name(".bss"); 800 static ConstString g_BSS_sect_name("BSS"); 801 802 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_CODE && 803 ((const_sect_name == g_code_sect_name) || 804 (const_sect_name == g_CODE_sect_name))) { 805 return eSectionTypeCode; 806 } 807 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA && 808 ((const_sect_name == g_data_sect_name) || 809 (const_sect_name == g_DATA_sect_name))) { 810 if (sect.size == 0 && sect.offset == 0) 811 return eSectionTypeZeroFill; 812 else 813 return eSectionTypeData; 814 } 815 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA && 816 ((const_sect_name == g_bss_sect_name) || 817 (const_sect_name == g_BSS_sect_name))) { 818 if (sect.size == 0) 819 return eSectionTypeZeroFill; 820 else 821 return eSectionTypeData; 822 } 823 824 SectionType section_type = 825 llvm::StringSwitch<SectionType>(sect_name) 826 .Case(".debug", eSectionTypeDebug) 827 .Case(".stabstr", eSectionTypeDataCString) 828 .Case(".reloc", eSectionTypeOther) 829 .Case(".debug_abbrev", eSectionTypeDWARFDebugAbbrev) 830 .Case(".debug_aranges", eSectionTypeDWARFDebugAranges) 831 .Case(".debug_frame", eSectionTypeDWARFDebugFrame) 832 .Case(".debug_info", eSectionTypeDWARFDebugInfo) 833 .Case(".debug_line", eSectionTypeDWARFDebugLine) 834 .Case(".debug_loc", eSectionTypeDWARFDebugLoc) 835 .Case(".debug_loclists", eSectionTypeDWARFDebugLocLists) 836 .Case(".debug_macinfo", eSectionTypeDWARFDebugMacInfo) 837 .Case(".debug_names", eSectionTypeDWARFDebugNames) 838 .Case(".debug_pubnames", eSectionTypeDWARFDebugPubNames) 839 .Case(".debug_pubtypes", eSectionTypeDWARFDebugPubTypes) 840 .Case(".debug_ranges", eSectionTypeDWARFDebugRanges) 841 .Case(".debug_str", eSectionTypeDWARFDebugStr) 842 .Case(".debug_types", eSectionTypeDWARFDebugTypes) 843 // .eh_frame can be truncated to 8 chars. 844 .Cases(".eh_frame", ".eh_fram", eSectionTypeEHFrame) 845 .Case(".gosymtab", eSectionTypeGoSymtab) 846 .Default(eSectionTypeInvalid); 847 if (section_type != eSectionTypeInvalid) 848 return section_type; 849 850 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_CODE) 851 return eSectionTypeCode; 852 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA) 853 return eSectionTypeData; 854 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA) { 855 if (sect.size == 0) 856 return eSectionTypeZeroFill; 857 else 858 return eSectionTypeData; 859 } 860 return eSectionTypeOther; 861 } 862 863 void ObjectFilePECOFF::CreateSections(SectionList &unified_section_list) { 864 if (m_sections_up) 865 return; 866 m_sections_up = std::make_unique<SectionList>(); 867 868 ModuleSP module_sp(GetModule()); 869 if (module_sp) { 870 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 871 872 SectionSP header_sp = std::make_shared<Section>( 873 module_sp, this, ~user_id_t(0), ConstString("PECOFF header"), 874 eSectionTypeOther, m_coff_header_opt.image_base, 875 m_coff_header_opt.header_size, 876 /*file_offset*/ 0, m_coff_header_opt.header_size, 877 m_coff_header_opt.sect_alignment, 878 /*flags*/ 0); 879 header_sp->SetPermissions(ePermissionsReadable); 880 m_sections_up->AddSection(header_sp); 881 unified_section_list.AddSection(header_sp); 882 883 const uint32_t nsects = m_sect_headers.size(); 884 ModuleSP module_sp(GetModule()); 885 for (uint32_t idx = 0; idx < nsects; ++idx) { 886 llvm::StringRef sect_name = GetSectionName(m_sect_headers[idx]); 887 ConstString const_sect_name(sect_name); 888 SectionType section_type = GetSectionType(sect_name, m_sect_headers[idx]); 889 890 SectionSP section_sp(new Section( 891 module_sp, // Module to which this section belongs 892 this, // Object file to which this section belongs 893 idx + 1, // Section ID is the 1 based section index. 894 const_sect_name, // Name of this section 895 section_type, 896 m_coff_header_opt.image_base + 897 m_sect_headers[idx].vmaddr, // File VM address == addresses as 898 // they are found in the object file 899 m_sect_headers[idx].vmsize, // VM size in bytes of this section 900 m_sect_headers[idx] 901 .offset, // Offset to the data for this section in the file 902 m_sect_headers[idx] 903 .size, // Size in bytes of this section as found in the file 904 m_coff_header_opt.sect_alignment, // Section alignment 905 m_sect_headers[idx].flags)); // Flags for this section 906 907 uint32_t permissions = 0; 908 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_EXECUTE) 909 permissions |= ePermissionsExecutable; 910 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_READ) 911 permissions |= ePermissionsReadable; 912 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_WRITE) 913 permissions |= ePermissionsWritable; 914 section_sp->SetPermissions(permissions); 915 916 m_sections_up->AddSection(section_sp); 917 unified_section_list.AddSection(section_sp); 918 } 919 } 920 } 921 922 UUID ObjectFilePECOFF::GetUUID() { 923 if (m_uuid.IsValid()) 924 return m_uuid; 925 926 if (!CreateBinary()) 927 return UUID(); 928 929 m_uuid = GetCoffUUID(*m_binary); 930 return m_uuid; 931 } 932 933 uint32_t ObjectFilePECOFF::ParseDependentModules() { 934 ModuleSP module_sp(GetModule()); 935 if (!module_sp) 936 return 0; 937 938 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 939 if (m_deps_filespec) 940 return m_deps_filespec->GetSize(); 941 942 // Cache coff binary if it is not done yet. 943 if (!CreateBinary()) 944 return 0; 945 946 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 947 LLDB_LOG(log, "this = {0}, module = {1} ({2}), file = {3}, binary = {4}", 948 this, GetModule().get(), GetModule()->GetSpecificationDescription(), 949 m_file.GetPath(), m_binary.get()); 950 951 m_deps_filespec = FileSpecList(); 952 953 for (const auto &entry : m_binary->import_directories()) { 954 llvm::StringRef dll_name; 955 // Report a bogus entry. 956 if (llvm::Error e = entry.getName(dll_name)) { 957 LLDB_LOGF(log, 958 "ObjectFilePECOFF::ParseDependentModules() - failed to get " 959 "import directory entry name: %s", 960 llvm::toString(std::move(e)).c_str()); 961 continue; 962 } 963 964 // At this moment we only have the base name of the DLL. The full path can 965 // only be seen after the dynamic loading. Our best guess is Try to get it 966 // with the help of the object file's directory. 967 llvm::SmallString<128> dll_fullpath; 968 FileSpec dll_specs(dll_name); 969 dll_specs.GetDirectory().SetString(m_file.GetDirectory().GetCString()); 970 971 if (!llvm::sys::fs::real_path(dll_specs.GetPath(), dll_fullpath)) 972 m_deps_filespec->EmplaceBack(dll_fullpath); 973 else { 974 // Known DLLs or DLL not found in the object file directory. 975 m_deps_filespec->EmplaceBack(dll_name); 976 } 977 } 978 return m_deps_filespec->GetSize(); 979 } 980 981 uint32_t ObjectFilePECOFF::GetDependentModules(FileSpecList &files) { 982 auto num_modules = ParseDependentModules(); 983 auto original_size = files.GetSize(); 984 985 for (unsigned i = 0; i < num_modules; ++i) 986 files.AppendIfUnique(m_deps_filespec->GetFileSpecAtIndex(i)); 987 988 return files.GetSize() - original_size; 989 } 990 991 lldb_private::Address ObjectFilePECOFF::GetEntryPointAddress() { 992 if (m_entry_point_address.IsValid()) 993 return m_entry_point_address; 994 995 if (!ParseHeader() || !IsExecutable()) 996 return m_entry_point_address; 997 998 SectionList *section_list = GetSectionList(); 999 addr_t file_addr = m_coff_header_opt.entry + m_coff_header_opt.image_base; 1000 1001 if (!section_list) 1002 m_entry_point_address.SetOffset(file_addr); 1003 else 1004 m_entry_point_address.ResolveAddressUsingFileSections(file_addr, 1005 section_list); 1006 return m_entry_point_address; 1007 } 1008 1009 Address ObjectFilePECOFF::GetBaseAddress() { 1010 return Address(GetSectionList()->GetSectionAtIndex(0), 0); 1011 } 1012 1013 // Dump 1014 // 1015 // Dump the specifics of the runtime file container (such as any headers 1016 // segments, sections, etc). 1017 void ObjectFilePECOFF::Dump(Stream *s) { 1018 ModuleSP module_sp(GetModule()); 1019 if (module_sp) { 1020 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 1021 s->Printf("%p: ", static_cast<void *>(this)); 1022 s->Indent(); 1023 s->PutCString("ObjectFilePECOFF"); 1024 1025 ArchSpec header_arch = GetArchitecture(); 1026 1027 *s << ", file = '" << m_file 1028 << "', arch = " << header_arch.GetArchitectureName() << "\n"; 1029 1030 SectionList *sections = GetSectionList(); 1031 if (sections) 1032 sections->Dump(s->AsRawOstream(), s->GetIndentLevel(), nullptr, true, 1033 UINT32_MAX); 1034 1035 if (m_symtab_up) 1036 m_symtab_up->Dump(s, nullptr, eSortOrderNone); 1037 1038 if (m_dos_header.e_magic) 1039 DumpDOSHeader(s, m_dos_header); 1040 if (m_coff_header.machine) { 1041 DumpCOFFHeader(s, m_coff_header); 1042 if (m_coff_header.hdrsize) 1043 DumpOptCOFFHeader(s, m_coff_header_opt); 1044 } 1045 s->EOL(); 1046 DumpSectionHeaders(s); 1047 s->EOL(); 1048 1049 DumpDependentModules(s); 1050 s->EOL(); 1051 } 1052 } 1053 1054 // DumpDOSHeader 1055 // 1056 // Dump the MS-DOS header to the specified output stream 1057 void ObjectFilePECOFF::DumpDOSHeader(Stream *s, const dos_header_t &header) { 1058 s->PutCString("MSDOS Header\n"); 1059 s->Printf(" e_magic = 0x%4.4x\n", header.e_magic); 1060 s->Printf(" e_cblp = 0x%4.4x\n", header.e_cblp); 1061 s->Printf(" e_cp = 0x%4.4x\n", header.e_cp); 1062 s->Printf(" e_crlc = 0x%4.4x\n", header.e_crlc); 1063 s->Printf(" e_cparhdr = 0x%4.4x\n", header.e_cparhdr); 1064 s->Printf(" e_minalloc = 0x%4.4x\n", header.e_minalloc); 1065 s->Printf(" e_maxalloc = 0x%4.4x\n", header.e_maxalloc); 1066 s->Printf(" e_ss = 0x%4.4x\n", header.e_ss); 1067 s->Printf(" e_sp = 0x%4.4x\n", header.e_sp); 1068 s->Printf(" e_csum = 0x%4.4x\n", header.e_csum); 1069 s->Printf(" e_ip = 0x%4.4x\n", header.e_ip); 1070 s->Printf(" e_cs = 0x%4.4x\n", header.e_cs); 1071 s->Printf(" e_lfarlc = 0x%4.4x\n", header.e_lfarlc); 1072 s->Printf(" e_ovno = 0x%4.4x\n", header.e_ovno); 1073 s->Printf(" e_res[4] = { 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x }\n", 1074 header.e_res[0], header.e_res[1], header.e_res[2], header.e_res[3]); 1075 s->Printf(" e_oemid = 0x%4.4x\n", header.e_oemid); 1076 s->Printf(" e_oeminfo = 0x%4.4x\n", header.e_oeminfo); 1077 s->Printf(" e_res2[10] = { 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, " 1078 "0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x }\n", 1079 header.e_res2[0], header.e_res2[1], header.e_res2[2], 1080 header.e_res2[3], header.e_res2[4], header.e_res2[5], 1081 header.e_res2[6], header.e_res2[7], header.e_res2[8], 1082 header.e_res2[9]); 1083 s->Printf(" e_lfanew = 0x%8.8x\n", header.e_lfanew); 1084 } 1085 1086 // DumpCOFFHeader 1087 // 1088 // Dump the COFF header to the specified output stream 1089 void ObjectFilePECOFF::DumpCOFFHeader(Stream *s, const coff_header_t &header) { 1090 s->PutCString("COFF Header\n"); 1091 s->Printf(" machine = 0x%4.4x\n", header.machine); 1092 s->Printf(" nsects = 0x%4.4x\n", header.nsects); 1093 s->Printf(" modtime = 0x%8.8x\n", header.modtime); 1094 s->Printf(" symoff = 0x%8.8x\n", header.symoff); 1095 s->Printf(" nsyms = 0x%8.8x\n", header.nsyms); 1096 s->Printf(" hdrsize = 0x%4.4x\n", header.hdrsize); 1097 } 1098 1099 // DumpOptCOFFHeader 1100 // 1101 // Dump the optional COFF header to the specified output stream 1102 void ObjectFilePECOFF::DumpOptCOFFHeader(Stream *s, 1103 const coff_opt_header_t &header) { 1104 s->PutCString("Optional COFF Header\n"); 1105 s->Printf(" magic = 0x%4.4x\n", header.magic); 1106 s->Printf(" major_linker_version = 0x%2.2x\n", 1107 header.major_linker_version); 1108 s->Printf(" minor_linker_version = 0x%2.2x\n", 1109 header.minor_linker_version); 1110 s->Printf(" code_size = 0x%8.8x\n", header.code_size); 1111 s->Printf(" data_size = 0x%8.8x\n", header.data_size); 1112 s->Printf(" bss_size = 0x%8.8x\n", header.bss_size); 1113 s->Printf(" entry = 0x%8.8x\n", header.entry); 1114 s->Printf(" code_offset = 0x%8.8x\n", header.code_offset); 1115 s->Printf(" data_offset = 0x%8.8x\n", header.data_offset); 1116 s->Printf(" image_base = 0x%16.16" PRIx64 "\n", 1117 header.image_base); 1118 s->Printf(" sect_alignment = 0x%8.8x\n", header.sect_alignment); 1119 s->Printf(" file_alignment = 0x%8.8x\n", header.file_alignment); 1120 s->Printf(" major_os_system_version = 0x%4.4x\n", 1121 header.major_os_system_version); 1122 s->Printf(" minor_os_system_version = 0x%4.4x\n", 1123 header.minor_os_system_version); 1124 s->Printf(" major_image_version = 0x%4.4x\n", 1125 header.major_image_version); 1126 s->Printf(" minor_image_version = 0x%4.4x\n", 1127 header.minor_image_version); 1128 s->Printf(" major_subsystem_version = 0x%4.4x\n", 1129 header.major_subsystem_version); 1130 s->Printf(" minor_subsystem_version = 0x%4.4x\n", 1131 header.minor_subsystem_version); 1132 s->Printf(" reserved1 = 0x%8.8x\n", header.reserved1); 1133 s->Printf(" image_size = 0x%8.8x\n", header.image_size); 1134 s->Printf(" header_size = 0x%8.8x\n", header.header_size); 1135 s->Printf(" checksum = 0x%8.8x\n", header.checksum); 1136 s->Printf(" subsystem = 0x%4.4x\n", header.subsystem); 1137 s->Printf(" dll_flags = 0x%4.4x\n", header.dll_flags); 1138 s->Printf(" stack_reserve_size = 0x%16.16" PRIx64 "\n", 1139 header.stack_reserve_size); 1140 s->Printf(" stack_commit_size = 0x%16.16" PRIx64 "\n", 1141 header.stack_commit_size); 1142 s->Printf(" heap_reserve_size = 0x%16.16" PRIx64 "\n", 1143 header.heap_reserve_size); 1144 s->Printf(" heap_commit_size = 0x%16.16" PRIx64 "\n", 1145 header.heap_commit_size); 1146 s->Printf(" loader_flags = 0x%8.8x\n", header.loader_flags); 1147 s->Printf(" num_data_dir_entries = 0x%8.8x\n", 1148 (uint32_t)header.data_dirs.size()); 1149 uint32_t i; 1150 for (i = 0; i < header.data_dirs.size(); i++) { 1151 s->Printf(" data_dirs[%2u] vmaddr = 0x%8.8x, vmsize = 0x%8.8x\n", i, 1152 header.data_dirs[i].vmaddr, header.data_dirs[i].vmsize); 1153 } 1154 } 1155 // DumpSectionHeader 1156 // 1157 // Dump a single ELF section header to the specified output stream 1158 void ObjectFilePECOFF::DumpSectionHeader(Stream *s, 1159 const section_header_t &sh) { 1160 std::string name = std::string(GetSectionName(sh)); 1161 s->Printf("%-16s 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%4.4x " 1162 "0x%4.4x 0x%8.8x\n", 1163 name.c_str(), sh.vmaddr, sh.vmsize, sh.offset, sh.size, sh.reloff, 1164 sh.lineoff, sh.nreloc, sh.nline, sh.flags); 1165 } 1166 1167 // DumpSectionHeaders 1168 // 1169 // Dump all of the ELF section header to the specified output stream 1170 void ObjectFilePECOFF::DumpSectionHeaders(Stream *s) { 1171 1172 s->PutCString("Section Headers\n"); 1173 s->PutCString("IDX name vm addr vm size file off file " 1174 "size reloc off line off nreloc nline flags\n"); 1175 s->PutCString("==== ---------------- ---------- ---------- ---------- " 1176 "---------- ---------- ---------- ------ ------ ----------\n"); 1177 1178 uint32_t idx = 0; 1179 SectionHeaderCollIter pos, end = m_sect_headers.end(); 1180 1181 for (pos = m_sect_headers.begin(); pos != end; ++pos, ++idx) { 1182 s->Printf("[%2u] ", idx); 1183 ObjectFilePECOFF::DumpSectionHeader(s, *pos); 1184 } 1185 } 1186 1187 // DumpDependentModules 1188 // 1189 // Dump all of the dependent modules to the specified output stream 1190 void ObjectFilePECOFF::DumpDependentModules(lldb_private::Stream *s) { 1191 auto num_modules = ParseDependentModules(); 1192 if (num_modules > 0) { 1193 s->PutCString("Dependent Modules\n"); 1194 for (unsigned i = 0; i < num_modules; ++i) { 1195 auto spec = m_deps_filespec->GetFileSpecAtIndex(i); 1196 s->Printf(" %s\n", spec.GetFilename().GetCString()); 1197 } 1198 } 1199 } 1200 1201 bool ObjectFilePECOFF::IsWindowsSubsystem() { 1202 switch (m_coff_header_opt.subsystem) { 1203 case llvm::COFF::IMAGE_SUBSYSTEM_NATIVE: 1204 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_GUI: 1205 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_CUI: 1206 case llvm::COFF::IMAGE_SUBSYSTEM_NATIVE_WINDOWS: 1207 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_CE_GUI: 1208 case llvm::COFF::IMAGE_SUBSYSTEM_XBOX: 1209 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_BOOT_APPLICATION: 1210 return true; 1211 default: 1212 return false; 1213 } 1214 } 1215 1216 ArchSpec ObjectFilePECOFF::GetArchitecture() { 1217 uint16_t machine = m_coff_header.machine; 1218 switch (machine) { 1219 default: 1220 break; 1221 case llvm::COFF::IMAGE_FILE_MACHINE_AMD64: 1222 case llvm::COFF::IMAGE_FILE_MACHINE_I386: 1223 case llvm::COFF::IMAGE_FILE_MACHINE_POWERPC: 1224 case llvm::COFF::IMAGE_FILE_MACHINE_POWERPCFP: 1225 case llvm::COFF::IMAGE_FILE_MACHINE_ARM: 1226 case llvm::COFF::IMAGE_FILE_MACHINE_ARMNT: 1227 case llvm::COFF::IMAGE_FILE_MACHINE_THUMB: 1228 case llvm::COFF::IMAGE_FILE_MACHINE_ARM64: 1229 ArchSpec arch; 1230 arch.SetArchitecture(eArchTypeCOFF, machine, LLDB_INVALID_CPUTYPE, 1231 IsWindowsSubsystem() ? llvm::Triple::Win32 1232 : llvm::Triple::UnknownOS); 1233 return arch; 1234 } 1235 return ArchSpec(); 1236 } 1237 1238 ObjectFile::Type ObjectFilePECOFF::CalculateType() { 1239 if (m_coff_header.machine != 0) { 1240 if ((m_coff_header.flags & llvm::COFF::IMAGE_FILE_DLL) == 0) 1241 return eTypeExecutable; 1242 else 1243 return eTypeSharedLibrary; 1244 } 1245 return eTypeExecutable; 1246 } 1247 1248 ObjectFile::Strata ObjectFilePECOFF::CalculateStrata() { return eStrataUser; } 1249 1250 // PluginInterface protocol 1251 ConstString ObjectFilePECOFF::GetPluginName() { return GetPluginNameStatic(); } 1252 1253 uint32_t ObjectFilePECOFF::GetPluginVersion() { return 1; } 1254