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