1 //===-- ObjectFilePECOFF.cpp ----------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "ObjectFilePECOFF.h" 10 #include "PECallFrameInfo.h" 11 #include "WindowsMiniDump.h" 12 13 #include "lldb/Core/FileSpecList.h" 14 #include "lldb/Core/Module.h" 15 #include "lldb/Core/ModuleSpec.h" 16 #include "lldb/Core/PluginManager.h" 17 #include "lldb/Core/Section.h" 18 #include "lldb/Core/StreamFile.h" 19 #include "lldb/Symbol/ObjectFile.h" 20 #include "lldb/Target/Process.h" 21 #include "lldb/Target/SectionLoadList.h" 22 #include "lldb/Target/Target.h" 23 #include "lldb/Utility/ArchSpec.h" 24 #include "lldb/Utility/DataBufferHeap.h" 25 #include "lldb/Utility/FileSpec.h" 26 #include "lldb/Utility/Log.h" 27 #include "lldb/Utility/StreamString.h" 28 #include "lldb/Utility/Timer.h" 29 #include "lldb/Utility/UUID.h" 30 #include "llvm/BinaryFormat/COFF.h" 31 32 #include "llvm/Object/COFFImportFile.h" 33 #include "llvm/Support/Error.h" 34 #include "llvm/Support/MemoryBuffer.h" 35 36 #define IMAGE_DOS_SIGNATURE 0x5A4D // MZ 37 #define IMAGE_NT_SIGNATURE 0x00004550 // PE00 38 #define OPT_HEADER_MAGIC_PE32 0x010b 39 #define OPT_HEADER_MAGIC_PE32_PLUS 0x020b 40 41 using namespace lldb; 42 using namespace lldb_private; 43 44 LLDB_PLUGIN_DEFINE(ObjectFilePECOFF) 45 46 static UUID GetCoffUUID(llvm::object::COFFObjectFile &coff_obj) { 47 const llvm::codeview::DebugInfo *pdb_info = nullptr; 48 llvm::StringRef pdb_file; 49 50 if (!coff_obj.getDebugPDBInfo(pdb_info, pdb_file) && pdb_info) { 51 if (pdb_info->PDB70.CVSignature == llvm::OMF::Signature::PDB70) { 52 UUID::CvRecordPdb70 info; 53 memcpy(&info.Uuid, pdb_info->PDB70.Signature, sizeof(info.Uuid)); 54 info.Age = pdb_info->PDB70.Age; 55 return UUID::fromCvRecord(info); 56 } 57 } 58 59 return UUID(); 60 } 61 62 char ObjectFilePECOFF::ID; 63 64 void ObjectFilePECOFF::Initialize() { 65 PluginManager::RegisterPlugin( 66 GetPluginNameStatic(), GetPluginDescriptionStatic(), CreateInstance, 67 CreateMemoryInstance, GetModuleSpecifications, SaveCore); 68 } 69 70 void ObjectFilePECOFF::Terminate() { 71 PluginManager::UnregisterPlugin(CreateInstance); 72 } 73 74 lldb_private::ConstString ObjectFilePECOFF::GetPluginNameStatic() { 75 static ConstString g_name("pe-coff"); 76 return g_name; 77 } 78 79 const char *ObjectFilePECOFF::GetPluginDescriptionStatic() { 80 return "Portable Executable and Common Object File Format object file reader " 81 "(32 and 64 bit)"; 82 } 83 84 ObjectFile *ObjectFilePECOFF::CreateInstance(const lldb::ModuleSP &module_sp, 85 DataBufferSP &data_sp, 86 lldb::offset_t data_offset, 87 const lldb_private::FileSpec *file_p, 88 lldb::offset_t file_offset, 89 lldb::offset_t length) { 90 FileSpec file = file_p ? *file_p : FileSpec(); 91 if (!data_sp) { 92 data_sp = MapFileData(file, length, file_offset); 93 if (!data_sp) 94 return nullptr; 95 data_offset = 0; 96 } 97 98 if (!ObjectFilePECOFF::MagicBytesMatch(data_sp)) 99 return nullptr; 100 101 // Update the data to contain the entire file if it doesn't already 102 if (data_sp->GetByteSize() < length) { 103 data_sp = MapFileData(file, length, file_offset); 104 if (!data_sp) 105 return nullptr; 106 } 107 108 auto objfile_up = std::make_unique<ObjectFilePECOFF>( 109 module_sp, data_sp, data_offset, file_p, file_offset, length); 110 if (!objfile_up || !objfile_up->ParseHeader()) 111 return nullptr; 112 113 // Cache coff binary. 114 if (!objfile_up->CreateBinary()) 115 return nullptr; 116 return objfile_up.release(); 117 } 118 119 ObjectFile *ObjectFilePECOFF::CreateMemoryInstance( 120 const lldb::ModuleSP &module_sp, lldb::DataBufferSP &data_sp, 121 const lldb::ProcessSP &process_sp, lldb::addr_t header_addr) { 122 if (!data_sp || !ObjectFilePECOFF::MagicBytesMatch(data_sp)) 123 return nullptr; 124 auto objfile_up = std::make_unique<ObjectFilePECOFF>( 125 module_sp, data_sp, process_sp, header_addr); 126 if (objfile_up.get() && objfile_up->ParseHeader()) { 127 return objfile_up.release(); 128 } 129 return nullptr; 130 } 131 132 size_t ObjectFilePECOFF::GetModuleSpecifications( 133 const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp, 134 lldb::offset_t data_offset, lldb::offset_t file_offset, 135 lldb::offset_t length, lldb_private::ModuleSpecList &specs) { 136 const size_t initial_count = specs.GetSize(); 137 if (!data_sp || !ObjectFilePECOFF::MagicBytesMatch(data_sp)) 138 return initial_count; 139 140 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 141 142 if (data_sp->GetByteSize() < length) 143 if (DataBufferSP full_sp = MapFileData(file, -1, file_offset)) 144 data_sp = std::move(full_sp); 145 auto binary = llvm::object::createBinary(llvm::MemoryBufferRef( 146 toStringRef(data_sp->GetData()), file.GetFilename().GetStringRef())); 147 148 if (!binary) { 149 LLDB_LOG_ERROR(log, binary.takeError(), 150 "Failed to create binary for file ({1}): {0}", file); 151 return initial_count; 152 } 153 154 auto *COFFObj = llvm::dyn_cast<llvm::object::COFFObjectFile>(binary->get()); 155 if (!COFFObj) 156 return initial_count; 157 158 ModuleSpec module_spec(file); 159 ArchSpec &spec = module_spec.GetArchitecture(); 160 lldb_private::UUID &uuid = module_spec.GetUUID(); 161 if (!uuid.IsValid()) 162 uuid = GetCoffUUID(*COFFObj); 163 164 switch (COFFObj->getMachine()) { 165 case MachineAmd64: 166 spec.SetTriple("x86_64-pc-windows"); 167 specs.Append(module_spec); 168 break; 169 case MachineX86: 170 spec.SetTriple("i386-pc-windows"); 171 specs.Append(module_spec); 172 spec.SetTriple("i686-pc-windows"); 173 specs.Append(module_spec); 174 break; 175 case MachineArmNt: 176 spec.SetTriple("armv7-pc-windows"); 177 specs.Append(module_spec); 178 break; 179 case MachineArm64: 180 spec.SetTriple("aarch64-pc-windows"); 181 specs.Append(module_spec); 182 break; 183 default: 184 break; 185 } 186 187 return specs.GetSize() - initial_count; 188 } 189 190 bool ObjectFilePECOFF::SaveCore(const lldb::ProcessSP &process_sp, 191 const lldb_private::FileSpec &outfile, 192 lldb_private::Status &error) { 193 return SaveMiniDump(process_sp, outfile, error); 194 } 195 196 bool ObjectFilePECOFF::MagicBytesMatch(DataBufferSP &data_sp) { 197 DataExtractor data(data_sp, eByteOrderLittle, 4); 198 lldb::offset_t offset = 0; 199 uint16_t magic = data.GetU16(&offset); 200 return magic == IMAGE_DOS_SIGNATURE; 201 } 202 203 lldb::SymbolType ObjectFilePECOFF::MapSymbolType(uint16_t coff_symbol_type) { 204 // TODO: We need to complete this mapping of COFF symbol types to LLDB ones. 205 // For now, here's a hack to make sure our function have types. 206 const auto complex_type = 207 coff_symbol_type >> llvm::COFF::SCT_COMPLEX_TYPE_SHIFT; 208 if (complex_type == llvm::COFF::IMAGE_SYM_DTYPE_FUNCTION) { 209 return lldb::eSymbolTypeCode; 210 } 211 return lldb::eSymbolTypeInvalid; 212 } 213 214 bool ObjectFilePECOFF::CreateBinary() { 215 if (m_binary) 216 return true; 217 218 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 219 220 auto binary = llvm::object::createBinary(llvm::MemoryBufferRef( 221 toStringRef(m_data.GetData()), m_file.GetFilename().GetStringRef())); 222 if (!binary) { 223 LLDB_LOG_ERROR(log, binary.takeError(), 224 "Failed to create binary for file ({1}): {0}", m_file); 225 return false; 226 } 227 228 // Make sure we only handle COFF format. 229 m_binary = 230 llvm::unique_dyn_cast<llvm::object::COFFObjectFile>(std::move(*binary)); 231 if (!m_binary) 232 return false; 233 234 LLDB_LOG(log, "this = {0}, module = {1} ({2}), file = {3}, binary = {4}", 235 this, GetModule().get(), GetModule()->GetSpecificationDescription(), 236 m_file.GetPath(), m_binary.get()); 237 return true; 238 } 239 240 ObjectFilePECOFF::ObjectFilePECOFF(const lldb::ModuleSP &module_sp, 241 DataBufferSP &data_sp, 242 lldb::offset_t data_offset, 243 const FileSpec *file, 244 lldb::offset_t file_offset, 245 lldb::offset_t length) 246 : ObjectFile(module_sp, file, file_offset, length, data_sp, data_offset), 247 m_dos_header(), m_coff_header(), m_sect_headers(), 248 m_entry_point_address(), m_deps_filespec() { 249 ::memset(&m_dos_header, 0, sizeof(m_dos_header)); 250 ::memset(&m_coff_header, 0, sizeof(m_coff_header)); 251 } 252 253 ObjectFilePECOFF::ObjectFilePECOFF(const lldb::ModuleSP &module_sp, 254 DataBufferSP &header_data_sp, 255 const lldb::ProcessSP &process_sp, 256 addr_t header_addr) 257 : ObjectFile(module_sp, process_sp, header_addr, header_data_sp), 258 m_dos_header(), m_coff_header(), m_sect_headers(), 259 m_entry_point_address(), m_deps_filespec() { 260 ::memset(&m_dos_header, 0, sizeof(m_dos_header)); 261 ::memset(&m_coff_header, 0, sizeof(m_coff_header)); 262 } 263 264 ObjectFilePECOFF::~ObjectFilePECOFF() {} 265 266 bool ObjectFilePECOFF::ParseHeader() { 267 ModuleSP module_sp(GetModule()); 268 if (module_sp) { 269 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 270 m_sect_headers.clear(); 271 m_data.SetByteOrder(eByteOrderLittle); 272 lldb::offset_t offset = 0; 273 274 if (ParseDOSHeader(m_data, m_dos_header)) { 275 offset = m_dos_header.e_lfanew; 276 uint32_t pe_signature = m_data.GetU32(&offset); 277 if (pe_signature != IMAGE_NT_SIGNATURE) 278 return false; 279 if (ParseCOFFHeader(m_data, &offset, m_coff_header)) { 280 if (m_coff_header.hdrsize > 0) 281 ParseCOFFOptionalHeader(&offset); 282 ParseSectionHeaders(offset); 283 } 284 m_data.SetAddressByteSize(GetAddressByteSize()); 285 return true; 286 } 287 } 288 return false; 289 } 290 291 bool ObjectFilePECOFF::SetLoadAddress(Target &target, addr_t value, 292 bool value_is_offset) { 293 bool changed = false; 294 ModuleSP module_sp = GetModule(); 295 if (module_sp) { 296 size_t num_loaded_sections = 0; 297 SectionList *section_list = GetSectionList(); 298 if (section_list) { 299 if (!value_is_offset) { 300 value -= m_image_base; 301 } 302 303 const size_t num_sections = section_list->GetSize(); 304 size_t sect_idx = 0; 305 306 for (sect_idx = 0; sect_idx < num_sections; ++sect_idx) { 307 // Iterate through the object file sections to find all of the sections 308 // that have SHF_ALLOC in their flag bits. 309 SectionSP section_sp(section_list->GetSectionAtIndex(sect_idx)); 310 if (section_sp && !section_sp->IsThreadSpecific()) { 311 if (target.GetSectionLoadList().SetSectionLoadAddress( 312 section_sp, section_sp->GetFileAddress() + value)) 313 ++num_loaded_sections; 314 } 315 } 316 changed = num_loaded_sections > 0; 317 } 318 } 319 return changed; 320 } 321 322 ByteOrder ObjectFilePECOFF::GetByteOrder() const { return eByteOrderLittle; } 323 324 bool ObjectFilePECOFF::IsExecutable() const { 325 return (m_coff_header.flags & llvm::COFF::IMAGE_FILE_DLL) == 0; 326 } 327 328 uint32_t ObjectFilePECOFF::GetAddressByteSize() const { 329 if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32_PLUS) 330 return 8; 331 else if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32) 332 return 4; 333 return 4; 334 } 335 336 // NeedsEndianSwap 337 // 338 // Return true if an endian swap needs to occur when extracting data from this 339 // file. 340 bool ObjectFilePECOFF::NeedsEndianSwap() const { 341 #if defined(__LITTLE_ENDIAN__) 342 return false; 343 #else 344 return true; 345 #endif 346 } 347 // ParseDOSHeader 348 bool ObjectFilePECOFF::ParseDOSHeader(DataExtractor &data, 349 dos_header_t &dos_header) { 350 bool success = false; 351 lldb::offset_t offset = 0; 352 success = data.ValidOffsetForDataOfSize(0, sizeof(dos_header)); 353 354 if (success) { 355 dos_header.e_magic = data.GetU16(&offset); // Magic number 356 success = dos_header.e_magic == IMAGE_DOS_SIGNATURE; 357 358 if (success) { 359 dos_header.e_cblp = data.GetU16(&offset); // Bytes on last page of file 360 dos_header.e_cp = data.GetU16(&offset); // Pages in file 361 dos_header.e_crlc = data.GetU16(&offset); // Relocations 362 dos_header.e_cparhdr = 363 data.GetU16(&offset); // Size of header in paragraphs 364 dos_header.e_minalloc = 365 data.GetU16(&offset); // Minimum extra paragraphs needed 366 dos_header.e_maxalloc = 367 data.GetU16(&offset); // Maximum extra paragraphs needed 368 dos_header.e_ss = data.GetU16(&offset); // Initial (relative) SS value 369 dos_header.e_sp = data.GetU16(&offset); // Initial SP value 370 dos_header.e_csum = data.GetU16(&offset); // Checksum 371 dos_header.e_ip = data.GetU16(&offset); // Initial IP value 372 dos_header.e_cs = data.GetU16(&offset); // Initial (relative) CS value 373 dos_header.e_lfarlc = 374 data.GetU16(&offset); // File address of relocation table 375 dos_header.e_ovno = data.GetU16(&offset); // Overlay number 376 377 dos_header.e_res[0] = data.GetU16(&offset); // Reserved words 378 dos_header.e_res[1] = data.GetU16(&offset); // Reserved words 379 dos_header.e_res[2] = data.GetU16(&offset); // Reserved words 380 dos_header.e_res[3] = data.GetU16(&offset); // Reserved words 381 382 dos_header.e_oemid = 383 data.GetU16(&offset); // OEM identifier (for e_oeminfo) 384 dos_header.e_oeminfo = 385 data.GetU16(&offset); // OEM information; e_oemid specific 386 dos_header.e_res2[0] = data.GetU16(&offset); // Reserved words 387 dos_header.e_res2[1] = data.GetU16(&offset); // Reserved words 388 dos_header.e_res2[2] = data.GetU16(&offset); // Reserved words 389 dos_header.e_res2[3] = data.GetU16(&offset); // Reserved words 390 dos_header.e_res2[4] = data.GetU16(&offset); // Reserved words 391 dos_header.e_res2[5] = data.GetU16(&offset); // Reserved words 392 dos_header.e_res2[6] = data.GetU16(&offset); // Reserved words 393 dos_header.e_res2[7] = data.GetU16(&offset); // Reserved words 394 dos_header.e_res2[8] = data.GetU16(&offset); // Reserved words 395 dos_header.e_res2[9] = data.GetU16(&offset); // Reserved words 396 397 dos_header.e_lfanew = 398 data.GetU32(&offset); // File address of new exe header 399 } 400 } 401 if (!success) 402 memset(&dos_header, 0, sizeof(dos_header)); 403 return success; 404 } 405 406 // ParserCOFFHeader 407 bool ObjectFilePECOFF::ParseCOFFHeader(DataExtractor &data, 408 lldb::offset_t *offset_ptr, 409 coff_header_t &coff_header) { 410 bool success = 411 data.ValidOffsetForDataOfSize(*offset_ptr, sizeof(coff_header)); 412 if (success) { 413 coff_header.machine = data.GetU16(offset_ptr); 414 coff_header.nsects = data.GetU16(offset_ptr); 415 coff_header.modtime = data.GetU32(offset_ptr); 416 coff_header.symoff = data.GetU32(offset_ptr); 417 coff_header.nsyms = data.GetU32(offset_ptr); 418 coff_header.hdrsize = data.GetU16(offset_ptr); 419 coff_header.flags = data.GetU16(offset_ptr); 420 } 421 if (!success) 422 memset(&coff_header, 0, sizeof(coff_header)); 423 return success; 424 } 425 426 bool ObjectFilePECOFF::ParseCOFFOptionalHeader(lldb::offset_t *offset_ptr) { 427 bool success = false; 428 const lldb::offset_t end_offset = *offset_ptr + m_coff_header.hdrsize; 429 if (*offset_ptr < end_offset) { 430 success = true; 431 m_coff_header_opt.magic = m_data.GetU16(offset_ptr); 432 m_coff_header_opt.major_linker_version = m_data.GetU8(offset_ptr); 433 m_coff_header_opt.minor_linker_version = m_data.GetU8(offset_ptr); 434 m_coff_header_opt.code_size = m_data.GetU32(offset_ptr); 435 m_coff_header_opt.data_size = m_data.GetU32(offset_ptr); 436 m_coff_header_opt.bss_size = m_data.GetU32(offset_ptr); 437 m_coff_header_opt.entry = m_data.GetU32(offset_ptr); 438 m_coff_header_opt.code_offset = m_data.GetU32(offset_ptr); 439 440 const uint32_t addr_byte_size = GetAddressByteSize(); 441 442 if (*offset_ptr < end_offset) { 443 if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32) { 444 // PE32 only 445 m_coff_header_opt.data_offset = m_data.GetU32(offset_ptr); 446 } else 447 m_coff_header_opt.data_offset = 0; 448 449 if (*offset_ptr < end_offset) { 450 m_coff_header_opt.image_base = 451 m_data.GetMaxU64(offset_ptr, addr_byte_size); 452 m_coff_header_opt.sect_alignment = m_data.GetU32(offset_ptr); 453 m_coff_header_opt.file_alignment = m_data.GetU32(offset_ptr); 454 m_coff_header_opt.major_os_system_version = m_data.GetU16(offset_ptr); 455 m_coff_header_opt.minor_os_system_version = m_data.GetU16(offset_ptr); 456 m_coff_header_opt.major_image_version = m_data.GetU16(offset_ptr); 457 m_coff_header_opt.minor_image_version = m_data.GetU16(offset_ptr); 458 m_coff_header_opt.major_subsystem_version = m_data.GetU16(offset_ptr); 459 m_coff_header_opt.minor_subsystem_version = m_data.GetU16(offset_ptr); 460 m_coff_header_opt.reserved1 = m_data.GetU32(offset_ptr); 461 m_coff_header_opt.image_size = m_data.GetU32(offset_ptr); 462 m_coff_header_opt.header_size = m_data.GetU32(offset_ptr); 463 m_coff_header_opt.checksum = m_data.GetU32(offset_ptr); 464 m_coff_header_opt.subsystem = m_data.GetU16(offset_ptr); 465 m_coff_header_opt.dll_flags = m_data.GetU16(offset_ptr); 466 m_coff_header_opt.stack_reserve_size = 467 m_data.GetMaxU64(offset_ptr, addr_byte_size); 468 m_coff_header_opt.stack_commit_size = 469 m_data.GetMaxU64(offset_ptr, addr_byte_size); 470 m_coff_header_opt.heap_reserve_size = 471 m_data.GetMaxU64(offset_ptr, addr_byte_size); 472 m_coff_header_opt.heap_commit_size = 473 m_data.GetMaxU64(offset_ptr, addr_byte_size); 474 m_coff_header_opt.loader_flags = m_data.GetU32(offset_ptr); 475 uint32_t num_data_dir_entries = m_data.GetU32(offset_ptr); 476 m_coff_header_opt.data_dirs.clear(); 477 m_coff_header_opt.data_dirs.resize(num_data_dir_entries); 478 uint32_t i; 479 for (i = 0; i < num_data_dir_entries; i++) { 480 m_coff_header_opt.data_dirs[i].vmaddr = m_data.GetU32(offset_ptr); 481 m_coff_header_opt.data_dirs[i].vmsize = m_data.GetU32(offset_ptr); 482 } 483 484 m_image_base = m_coff_header_opt.image_base; 485 } 486 } 487 } 488 // Make sure we are on track for section data which follows 489 *offset_ptr = end_offset; 490 return success; 491 } 492 493 uint32_t ObjectFilePECOFF::GetRVA(const Address &addr) const { 494 return addr.GetFileAddress() - m_image_base; 495 } 496 497 Address ObjectFilePECOFF::GetAddress(uint32_t rva) { 498 SectionList *sect_list = GetSectionList(); 499 if (!sect_list) 500 return Address(GetFileAddress(rva)); 501 502 return Address(GetFileAddress(rva), sect_list); 503 } 504 505 lldb::addr_t ObjectFilePECOFF::GetFileAddress(uint32_t rva) const { 506 return m_image_base + rva; 507 } 508 509 DataExtractor ObjectFilePECOFF::ReadImageData(uint32_t offset, size_t size) { 510 if (!size) 511 return {}; 512 513 if (m_data.ValidOffsetForDataOfSize(offset, size)) 514 return DataExtractor(m_data, offset, size); 515 516 ProcessSP process_sp(m_process_wp.lock()); 517 DataExtractor data; 518 if (process_sp) { 519 auto data_up = std::make_unique<DataBufferHeap>(size, 0); 520 Status readmem_error; 521 size_t bytes_read = 522 process_sp->ReadMemory(m_image_base + offset, data_up->GetBytes(), 523 data_up->GetByteSize(), readmem_error); 524 if (bytes_read == size) { 525 DataBufferSP buffer_sp(data_up.release()); 526 data.SetData(buffer_sp, 0, buffer_sp->GetByteSize()); 527 } 528 } 529 return data; 530 } 531 532 DataExtractor ObjectFilePECOFF::ReadImageDataByRVA(uint32_t rva, size_t size) { 533 Address addr = GetAddress(rva); 534 SectionSP sect = addr.GetSection(); 535 if (!sect) 536 return {}; 537 rva = sect->GetFileOffset() + addr.GetOffset(); 538 539 return ReadImageData(rva, size); 540 } 541 542 // ParseSectionHeaders 543 bool ObjectFilePECOFF::ParseSectionHeaders( 544 uint32_t section_header_data_offset) { 545 const uint32_t nsects = m_coff_header.nsects; 546 m_sect_headers.clear(); 547 548 if (nsects > 0) { 549 const size_t section_header_byte_size = nsects * sizeof(section_header_t); 550 DataExtractor section_header_data = 551 ReadImageData(section_header_data_offset, section_header_byte_size); 552 553 lldb::offset_t offset = 0; 554 if (section_header_data.ValidOffsetForDataOfSize( 555 offset, section_header_byte_size)) { 556 m_sect_headers.resize(nsects); 557 558 for (uint32_t idx = 0; idx < nsects; ++idx) { 559 const void *name_data = section_header_data.GetData(&offset, 8); 560 if (name_data) { 561 memcpy(m_sect_headers[idx].name, name_data, 8); 562 m_sect_headers[idx].vmsize = section_header_data.GetU32(&offset); 563 m_sect_headers[idx].vmaddr = section_header_data.GetU32(&offset); 564 m_sect_headers[idx].size = section_header_data.GetU32(&offset); 565 m_sect_headers[idx].offset = section_header_data.GetU32(&offset); 566 m_sect_headers[idx].reloff = section_header_data.GetU32(&offset); 567 m_sect_headers[idx].lineoff = section_header_data.GetU32(&offset); 568 m_sect_headers[idx].nreloc = section_header_data.GetU16(&offset); 569 m_sect_headers[idx].nline = section_header_data.GetU16(&offset); 570 m_sect_headers[idx].flags = section_header_data.GetU32(&offset); 571 } 572 } 573 } 574 } 575 576 return !m_sect_headers.empty(); 577 } 578 579 llvm::StringRef ObjectFilePECOFF::GetSectionName(const section_header_t §) { 580 llvm::StringRef hdr_name(sect.name, llvm::array_lengthof(sect.name)); 581 hdr_name = hdr_name.split('\0').first; 582 if (hdr_name.consume_front("/")) { 583 lldb::offset_t stroff; 584 if (!to_integer(hdr_name, stroff, 10)) 585 return ""; 586 lldb::offset_t string_file_offset = 587 m_coff_header.symoff + (m_coff_header.nsyms * 18) + stroff; 588 if (const char *name = m_data.GetCStr(&string_file_offset)) 589 return name; 590 return ""; 591 } 592 return hdr_name; 593 } 594 595 // GetNListSymtab 596 Symtab *ObjectFilePECOFF::GetSymtab() { 597 ModuleSP module_sp(GetModule()); 598 if (module_sp) { 599 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 600 if (m_symtab_up == nullptr) { 601 SectionList *sect_list = GetSectionList(); 602 m_symtab_up = std::make_unique<Symtab>(this); 603 std::lock_guard<std::recursive_mutex> guard(m_symtab_up->GetMutex()); 604 605 const uint32_t num_syms = m_coff_header.nsyms; 606 607 if (m_file && num_syms > 0 && m_coff_header.symoff > 0) { 608 const uint32_t symbol_size = 18; 609 const size_t symbol_data_size = num_syms * symbol_size; 610 // Include the 4-byte string table size at the end of the symbols 611 DataExtractor symtab_data = 612 ReadImageData(m_coff_header.symoff, symbol_data_size + 4); 613 lldb::offset_t offset = symbol_data_size; 614 const uint32_t strtab_size = symtab_data.GetU32(&offset); 615 if (strtab_size > 0) { 616 DataExtractor strtab_data = ReadImageData( 617 m_coff_header.symoff + symbol_data_size, strtab_size); 618 619 offset = 0; 620 std::string symbol_name; 621 Symbol *symbols = m_symtab_up->Resize(num_syms); 622 for (uint32_t i = 0; i < num_syms; ++i) { 623 coff_symbol_t symbol; 624 const uint32_t symbol_offset = offset; 625 const char *symbol_name_cstr = nullptr; 626 // If the first 4 bytes of the symbol string are zero, then they 627 // are followed by a 4-byte string table offset. Else these 628 // 8 bytes contain the symbol name 629 if (symtab_data.GetU32(&offset) == 0) { 630 // Long string that doesn't fit into the symbol table name, so 631 // now we must read the 4 byte string table offset 632 uint32_t strtab_offset = symtab_data.GetU32(&offset); 633 symbol_name_cstr = strtab_data.PeekCStr(strtab_offset); 634 symbol_name.assign(symbol_name_cstr); 635 } else { 636 // Short string that fits into the symbol table name which is 8 637 // bytes 638 offset += sizeof(symbol.name) - 4; // Skip remaining 639 symbol_name_cstr = symtab_data.PeekCStr(symbol_offset); 640 if (symbol_name_cstr == nullptr) 641 break; 642 symbol_name.assign(symbol_name_cstr, sizeof(symbol.name)); 643 } 644 symbol.value = symtab_data.GetU32(&offset); 645 symbol.sect = symtab_data.GetU16(&offset); 646 symbol.type = symtab_data.GetU16(&offset); 647 symbol.storage = symtab_data.GetU8(&offset); 648 symbol.naux = symtab_data.GetU8(&offset); 649 symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); 650 if ((int16_t)symbol.sect >= 1) { 651 Address symbol_addr(sect_list->FindSectionByID(symbol.sect), 652 symbol.value); 653 symbols[i].GetAddressRef() = symbol_addr; 654 symbols[i].SetType(MapSymbolType(symbol.type)); 655 } 656 657 if (symbol.naux > 0) { 658 i += symbol.naux; 659 offset += symbol.naux * symbol_size; 660 } 661 } 662 } 663 } 664 665 // Read export header 666 if (coff_data_dir_export_table < m_coff_header_opt.data_dirs.size() && 667 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmsize > 0 && 668 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr > 0) { 669 export_directory_entry export_table; 670 uint32_t data_start = 671 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr; 672 673 DataExtractor symtab_data = ReadImageDataByRVA( 674 data_start, m_coff_header_opt.data_dirs[0].vmsize); 675 lldb::offset_t offset = 0; 676 677 // Read export_table header 678 export_table.characteristics = symtab_data.GetU32(&offset); 679 export_table.time_date_stamp = symtab_data.GetU32(&offset); 680 export_table.major_version = symtab_data.GetU16(&offset); 681 export_table.minor_version = symtab_data.GetU16(&offset); 682 export_table.name = symtab_data.GetU32(&offset); 683 export_table.base = symtab_data.GetU32(&offset); 684 export_table.number_of_functions = symtab_data.GetU32(&offset); 685 export_table.number_of_names = symtab_data.GetU32(&offset); 686 export_table.address_of_functions = symtab_data.GetU32(&offset); 687 export_table.address_of_names = symtab_data.GetU32(&offset); 688 export_table.address_of_name_ordinals = symtab_data.GetU32(&offset); 689 690 bool has_ordinal = export_table.address_of_name_ordinals != 0; 691 692 lldb::offset_t name_offset = export_table.address_of_names - data_start; 693 lldb::offset_t name_ordinal_offset = 694 export_table.address_of_name_ordinals - data_start; 695 696 Symbol *symbols = m_symtab_up->Resize(export_table.number_of_names); 697 698 std::string symbol_name; 699 700 // Read each export table entry 701 for (size_t i = 0; i < export_table.number_of_names; ++i) { 702 uint32_t name_ordinal = 703 has_ordinal ? symtab_data.GetU16(&name_ordinal_offset) : i; 704 uint32_t name_address = symtab_data.GetU32(&name_offset); 705 706 const char *symbol_name_cstr = 707 symtab_data.PeekCStr(name_address - data_start); 708 symbol_name.assign(symbol_name_cstr); 709 710 lldb::offset_t function_offset = export_table.address_of_functions - 711 data_start + 712 sizeof(uint32_t) * name_ordinal; 713 uint32_t function_rva = symtab_data.GetU32(&function_offset); 714 715 Address symbol_addr(m_coff_header_opt.image_base + function_rva, 716 sect_list); 717 symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); 718 symbols[i].GetAddressRef() = symbol_addr; 719 symbols[i].SetType(lldb::eSymbolTypeCode); 720 symbols[i].SetDebug(true); 721 } 722 } 723 m_symtab_up->CalculateSymbolSizes(); 724 } 725 } 726 return m_symtab_up.get(); 727 } 728 729 std::unique_ptr<CallFrameInfo> ObjectFilePECOFF::CreateCallFrameInfo() { 730 if (coff_data_dir_exception_table >= m_coff_header_opt.data_dirs.size()) 731 return {}; 732 733 data_directory data_dir_exception = 734 m_coff_header_opt.data_dirs[coff_data_dir_exception_table]; 735 if (!data_dir_exception.vmaddr) 736 return {}; 737 738 if (m_coff_header.machine != llvm::COFF::IMAGE_FILE_MACHINE_AMD64) 739 return {}; 740 741 return std::make_unique<PECallFrameInfo>(*this, data_dir_exception.vmaddr, 742 data_dir_exception.vmsize); 743 } 744 745 bool ObjectFilePECOFF::IsStripped() { 746 // TODO: determine this for COFF 747 return false; 748 } 749 750 SectionType ObjectFilePECOFF::GetSectionType(llvm::StringRef sect_name, 751 const section_header_t §) { 752 ConstString const_sect_name(sect_name); 753 static ConstString g_code_sect_name(".code"); 754 static ConstString g_CODE_sect_name("CODE"); 755 static ConstString g_data_sect_name(".data"); 756 static ConstString g_DATA_sect_name("DATA"); 757 static ConstString g_bss_sect_name(".bss"); 758 static ConstString g_BSS_sect_name("BSS"); 759 760 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_CODE && 761 ((const_sect_name == g_code_sect_name) || 762 (const_sect_name == g_CODE_sect_name))) { 763 return eSectionTypeCode; 764 } 765 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA && 766 ((const_sect_name == g_data_sect_name) || 767 (const_sect_name == g_DATA_sect_name))) { 768 if (sect.size == 0 && sect.offset == 0) 769 return eSectionTypeZeroFill; 770 else 771 return eSectionTypeData; 772 } 773 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA && 774 ((const_sect_name == g_bss_sect_name) || 775 (const_sect_name == g_BSS_sect_name))) { 776 if (sect.size == 0) 777 return eSectionTypeZeroFill; 778 else 779 return eSectionTypeData; 780 } 781 782 SectionType section_type = 783 llvm::StringSwitch<SectionType>(sect_name) 784 .Case(".debug", eSectionTypeDebug) 785 .Case(".stabstr", eSectionTypeDataCString) 786 .Case(".reloc", eSectionTypeOther) 787 .Case(".debug_abbrev", eSectionTypeDWARFDebugAbbrev) 788 .Case(".debug_aranges", eSectionTypeDWARFDebugAranges) 789 .Case(".debug_frame", eSectionTypeDWARFDebugFrame) 790 .Case(".debug_info", eSectionTypeDWARFDebugInfo) 791 .Case(".debug_line", eSectionTypeDWARFDebugLine) 792 .Case(".debug_loc", eSectionTypeDWARFDebugLoc) 793 .Case(".debug_loclists", eSectionTypeDWARFDebugLocLists) 794 .Case(".debug_macinfo", eSectionTypeDWARFDebugMacInfo) 795 .Case(".debug_names", eSectionTypeDWARFDebugNames) 796 .Case(".debug_pubnames", eSectionTypeDWARFDebugPubNames) 797 .Case(".debug_pubtypes", eSectionTypeDWARFDebugPubTypes) 798 .Case(".debug_ranges", eSectionTypeDWARFDebugRanges) 799 .Case(".debug_str", eSectionTypeDWARFDebugStr) 800 .Case(".debug_types", eSectionTypeDWARFDebugTypes) 801 // .eh_frame can be truncated to 8 chars. 802 .Cases(".eh_frame", ".eh_fram", eSectionTypeEHFrame) 803 .Case(".gosymtab", eSectionTypeGoSymtab) 804 .Default(eSectionTypeInvalid); 805 if (section_type != eSectionTypeInvalid) 806 return section_type; 807 808 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_CODE) 809 return eSectionTypeCode; 810 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA) 811 return eSectionTypeData; 812 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA) { 813 if (sect.size == 0) 814 return eSectionTypeZeroFill; 815 else 816 return eSectionTypeData; 817 } 818 return eSectionTypeOther; 819 } 820 821 void ObjectFilePECOFF::CreateSections(SectionList &unified_section_list) { 822 if (m_sections_up) 823 return; 824 m_sections_up = std::make_unique<SectionList>(); 825 ModuleSP module_sp(GetModule()); 826 if (module_sp) { 827 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 828 829 SectionSP header_sp = std::make_shared<Section>( 830 module_sp, this, ~user_id_t(0), ConstString("PECOFF header"), 831 eSectionTypeOther, m_coff_header_opt.image_base, 832 m_coff_header_opt.header_size, 833 /*file_offset*/ 0, m_coff_header_opt.header_size, 834 m_coff_header_opt.sect_alignment, 835 /*flags*/ 0); 836 header_sp->SetPermissions(ePermissionsReadable); 837 m_sections_up->AddSection(header_sp); 838 unified_section_list.AddSection(header_sp); 839 840 const uint32_t nsects = m_sect_headers.size(); 841 ModuleSP module_sp(GetModule()); 842 for (uint32_t idx = 0; idx < nsects; ++idx) { 843 llvm::StringRef sect_name = GetSectionName(m_sect_headers[idx]); 844 ConstString const_sect_name(sect_name); 845 SectionType section_type = GetSectionType(sect_name, m_sect_headers[idx]); 846 847 SectionSP section_sp(new Section( 848 module_sp, // Module to which this section belongs 849 this, // Object file to which this section belongs 850 idx + 1, // Section ID is the 1 based section index. 851 const_sect_name, // Name of this section 852 section_type, 853 m_coff_header_opt.image_base + 854 m_sect_headers[idx].vmaddr, // File VM address == addresses as 855 // they are found in the object file 856 m_sect_headers[idx].vmsize, // VM size in bytes of this section 857 m_sect_headers[idx] 858 .offset, // Offset to the data for this section in the file 859 m_sect_headers[idx] 860 .size, // Size in bytes of this section as found in the file 861 m_coff_header_opt.sect_alignment, // Section alignment 862 m_sect_headers[idx].flags)); // Flags for this section 863 864 uint32_t permissions = 0; 865 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_EXECUTE) 866 permissions |= ePermissionsExecutable; 867 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_READ) 868 permissions |= ePermissionsReadable; 869 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_WRITE) 870 permissions |= ePermissionsWritable; 871 section_sp->SetPermissions(permissions); 872 873 m_sections_up->AddSection(section_sp); 874 unified_section_list.AddSection(section_sp); 875 } 876 } 877 } 878 879 UUID ObjectFilePECOFF::GetUUID() { 880 if (m_uuid.IsValid()) 881 return m_uuid; 882 883 if (!CreateBinary()) 884 return UUID(); 885 886 m_uuid = GetCoffUUID(*m_binary); 887 return m_uuid; 888 } 889 890 uint32_t ObjectFilePECOFF::ParseDependentModules() { 891 ModuleSP module_sp(GetModule()); 892 if (!module_sp) 893 return 0; 894 895 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 896 if (m_deps_filespec) 897 return m_deps_filespec->GetSize(); 898 899 // Cache coff binary if it is not done yet. 900 if (!CreateBinary()) 901 return 0; 902 903 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 904 LLDB_LOG(log, "this = {0}, module = {1} ({2}), file = {3}, binary = {4}", 905 this, GetModule().get(), GetModule()->GetSpecificationDescription(), 906 m_file.GetPath(), m_binary.get()); 907 908 m_deps_filespec = FileSpecList(); 909 910 for (const auto &entry : m_binary->import_directories()) { 911 llvm::StringRef dll_name; 912 // Report a bogus entry. 913 if (llvm::Error e = entry.getName(dll_name)) { 914 LLDB_LOGF(log, 915 "ObjectFilePECOFF::ParseDependentModules() - failed to get " 916 "import directory entry name: %s", 917 llvm::toString(std::move(e)).c_str()); 918 continue; 919 } 920 921 // At this moment we only have the base name of the DLL. The full path can 922 // only be seen after the dynamic loading. Our best guess is Try to get it 923 // with the help of the object file's directory. 924 llvm::SmallString<128> dll_fullpath; 925 FileSpec dll_specs(dll_name); 926 dll_specs.GetDirectory().SetString(m_file.GetDirectory().GetCString()); 927 928 if (!llvm::sys::fs::real_path(dll_specs.GetPath(), dll_fullpath)) 929 m_deps_filespec->EmplaceBack(dll_fullpath); 930 else { 931 // Known DLLs or DLL not found in the object file directory. 932 m_deps_filespec->EmplaceBack(dll_name); 933 } 934 } 935 return m_deps_filespec->GetSize(); 936 } 937 938 uint32_t ObjectFilePECOFF::GetDependentModules(FileSpecList &files) { 939 auto num_modules = ParseDependentModules(); 940 auto original_size = files.GetSize(); 941 942 for (unsigned i = 0; i < num_modules; ++i) 943 files.AppendIfUnique(m_deps_filespec->GetFileSpecAtIndex(i)); 944 945 return files.GetSize() - original_size; 946 } 947 948 lldb_private::Address ObjectFilePECOFF::GetEntryPointAddress() { 949 if (m_entry_point_address.IsValid()) 950 return m_entry_point_address; 951 952 if (!ParseHeader() || !IsExecutable()) 953 return m_entry_point_address; 954 955 SectionList *section_list = GetSectionList(); 956 addr_t file_addr = m_coff_header_opt.entry + m_coff_header_opt.image_base; 957 958 if (!section_list) 959 m_entry_point_address.SetOffset(file_addr); 960 else 961 m_entry_point_address.ResolveAddressUsingFileSections(file_addr, 962 section_list); 963 return m_entry_point_address; 964 } 965 966 Address ObjectFilePECOFF::GetBaseAddress() { 967 return Address(GetSectionList()->GetSectionAtIndex(0), 0); 968 } 969 970 // Dump 971 // 972 // Dump the specifics of the runtime file container (such as any headers 973 // segments, sections, etc). 974 void ObjectFilePECOFF::Dump(Stream *s) { 975 ModuleSP module_sp(GetModule()); 976 if (module_sp) { 977 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 978 s->Printf("%p: ", static_cast<void *>(this)); 979 s->Indent(); 980 s->PutCString("ObjectFilePECOFF"); 981 982 ArchSpec header_arch = GetArchitecture(); 983 984 *s << ", file = '" << m_file 985 << "', arch = " << header_arch.GetArchitectureName() << "\n"; 986 987 SectionList *sections = GetSectionList(); 988 if (sections) 989 sections->Dump(s->AsRawOstream(), s->GetIndentLevel(), nullptr, true, 990 UINT32_MAX); 991 992 if (m_symtab_up) 993 m_symtab_up->Dump(s, nullptr, eSortOrderNone); 994 995 if (m_dos_header.e_magic) 996 DumpDOSHeader(s, m_dos_header); 997 if (m_coff_header.machine) { 998 DumpCOFFHeader(s, m_coff_header); 999 if (m_coff_header.hdrsize) 1000 DumpOptCOFFHeader(s, m_coff_header_opt); 1001 } 1002 s->EOL(); 1003 DumpSectionHeaders(s); 1004 s->EOL(); 1005 1006 DumpDependentModules(s); 1007 s->EOL(); 1008 } 1009 } 1010 1011 // DumpDOSHeader 1012 // 1013 // Dump the MS-DOS header to the specified output stream 1014 void ObjectFilePECOFF::DumpDOSHeader(Stream *s, const dos_header_t &header) { 1015 s->PutCString("MSDOS Header\n"); 1016 s->Printf(" e_magic = 0x%4.4x\n", header.e_magic); 1017 s->Printf(" e_cblp = 0x%4.4x\n", header.e_cblp); 1018 s->Printf(" e_cp = 0x%4.4x\n", header.e_cp); 1019 s->Printf(" e_crlc = 0x%4.4x\n", header.e_crlc); 1020 s->Printf(" e_cparhdr = 0x%4.4x\n", header.e_cparhdr); 1021 s->Printf(" e_minalloc = 0x%4.4x\n", header.e_minalloc); 1022 s->Printf(" e_maxalloc = 0x%4.4x\n", header.e_maxalloc); 1023 s->Printf(" e_ss = 0x%4.4x\n", header.e_ss); 1024 s->Printf(" e_sp = 0x%4.4x\n", header.e_sp); 1025 s->Printf(" e_csum = 0x%4.4x\n", header.e_csum); 1026 s->Printf(" e_ip = 0x%4.4x\n", header.e_ip); 1027 s->Printf(" e_cs = 0x%4.4x\n", header.e_cs); 1028 s->Printf(" e_lfarlc = 0x%4.4x\n", header.e_lfarlc); 1029 s->Printf(" e_ovno = 0x%4.4x\n", header.e_ovno); 1030 s->Printf(" e_res[4] = { 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x }\n", 1031 header.e_res[0], header.e_res[1], header.e_res[2], header.e_res[3]); 1032 s->Printf(" e_oemid = 0x%4.4x\n", header.e_oemid); 1033 s->Printf(" e_oeminfo = 0x%4.4x\n", header.e_oeminfo); 1034 s->Printf(" e_res2[10] = { 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, " 1035 "0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x }\n", 1036 header.e_res2[0], header.e_res2[1], header.e_res2[2], 1037 header.e_res2[3], header.e_res2[4], header.e_res2[5], 1038 header.e_res2[6], header.e_res2[7], header.e_res2[8], 1039 header.e_res2[9]); 1040 s->Printf(" e_lfanew = 0x%8.8x\n", header.e_lfanew); 1041 } 1042 1043 // DumpCOFFHeader 1044 // 1045 // Dump the COFF header to the specified output stream 1046 void ObjectFilePECOFF::DumpCOFFHeader(Stream *s, const coff_header_t &header) { 1047 s->PutCString("COFF Header\n"); 1048 s->Printf(" machine = 0x%4.4x\n", header.machine); 1049 s->Printf(" nsects = 0x%4.4x\n", header.nsects); 1050 s->Printf(" modtime = 0x%8.8x\n", header.modtime); 1051 s->Printf(" symoff = 0x%8.8x\n", header.symoff); 1052 s->Printf(" nsyms = 0x%8.8x\n", header.nsyms); 1053 s->Printf(" hdrsize = 0x%4.4x\n", header.hdrsize); 1054 } 1055 1056 // DumpOptCOFFHeader 1057 // 1058 // Dump the optional COFF header to the specified output stream 1059 void ObjectFilePECOFF::DumpOptCOFFHeader(Stream *s, 1060 const coff_opt_header_t &header) { 1061 s->PutCString("Optional COFF Header\n"); 1062 s->Printf(" magic = 0x%4.4x\n", header.magic); 1063 s->Printf(" major_linker_version = 0x%2.2x\n", 1064 header.major_linker_version); 1065 s->Printf(" minor_linker_version = 0x%2.2x\n", 1066 header.minor_linker_version); 1067 s->Printf(" code_size = 0x%8.8x\n", header.code_size); 1068 s->Printf(" data_size = 0x%8.8x\n", header.data_size); 1069 s->Printf(" bss_size = 0x%8.8x\n", header.bss_size); 1070 s->Printf(" entry = 0x%8.8x\n", header.entry); 1071 s->Printf(" code_offset = 0x%8.8x\n", header.code_offset); 1072 s->Printf(" data_offset = 0x%8.8x\n", header.data_offset); 1073 s->Printf(" image_base = 0x%16.16" PRIx64 "\n", 1074 header.image_base); 1075 s->Printf(" sect_alignment = 0x%8.8x\n", header.sect_alignment); 1076 s->Printf(" file_alignment = 0x%8.8x\n", header.file_alignment); 1077 s->Printf(" major_os_system_version = 0x%4.4x\n", 1078 header.major_os_system_version); 1079 s->Printf(" minor_os_system_version = 0x%4.4x\n", 1080 header.minor_os_system_version); 1081 s->Printf(" major_image_version = 0x%4.4x\n", 1082 header.major_image_version); 1083 s->Printf(" minor_image_version = 0x%4.4x\n", 1084 header.minor_image_version); 1085 s->Printf(" major_subsystem_version = 0x%4.4x\n", 1086 header.major_subsystem_version); 1087 s->Printf(" minor_subsystem_version = 0x%4.4x\n", 1088 header.minor_subsystem_version); 1089 s->Printf(" reserved1 = 0x%8.8x\n", header.reserved1); 1090 s->Printf(" image_size = 0x%8.8x\n", header.image_size); 1091 s->Printf(" header_size = 0x%8.8x\n", header.header_size); 1092 s->Printf(" checksum = 0x%8.8x\n", header.checksum); 1093 s->Printf(" subsystem = 0x%4.4x\n", header.subsystem); 1094 s->Printf(" dll_flags = 0x%4.4x\n", header.dll_flags); 1095 s->Printf(" stack_reserve_size = 0x%16.16" PRIx64 "\n", 1096 header.stack_reserve_size); 1097 s->Printf(" stack_commit_size = 0x%16.16" PRIx64 "\n", 1098 header.stack_commit_size); 1099 s->Printf(" heap_reserve_size = 0x%16.16" PRIx64 "\n", 1100 header.heap_reserve_size); 1101 s->Printf(" heap_commit_size = 0x%16.16" PRIx64 "\n", 1102 header.heap_commit_size); 1103 s->Printf(" loader_flags = 0x%8.8x\n", header.loader_flags); 1104 s->Printf(" num_data_dir_entries = 0x%8.8x\n", 1105 (uint32_t)header.data_dirs.size()); 1106 uint32_t i; 1107 for (i = 0; i < header.data_dirs.size(); i++) { 1108 s->Printf(" data_dirs[%2u] vmaddr = 0x%8.8x, vmsize = 0x%8.8x\n", i, 1109 header.data_dirs[i].vmaddr, header.data_dirs[i].vmsize); 1110 } 1111 } 1112 // DumpSectionHeader 1113 // 1114 // Dump a single ELF section header to the specified output stream 1115 void ObjectFilePECOFF::DumpSectionHeader(Stream *s, 1116 const section_header_t &sh) { 1117 std::string name = std::string(GetSectionName(sh)); 1118 s->Printf("%-16s 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%4.4x " 1119 "0x%4.4x 0x%8.8x\n", 1120 name.c_str(), sh.vmaddr, sh.vmsize, sh.offset, sh.size, sh.reloff, 1121 sh.lineoff, sh.nreloc, sh.nline, sh.flags); 1122 } 1123 1124 // DumpSectionHeaders 1125 // 1126 // Dump all of the ELF section header to the specified output stream 1127 void ObjectFilePECOFF::DumpSectionHeaders(Stream *s) { 1128 1129 s->PutCString("Section Headers\n"); 1130 s->PutCString("IDX name vm addr vm size file off file " 1131 "size reloc off line off nreloc nline flags\n"); 1132 s->PutCString("==== ---------------- ---------- ---------- ---------- " 1133 "---------- ---------- ---------- ------ ------ ----------\n"); 1134 1135 uint32_t idx = 0; 1136 SectionHeaderCollIter pos, end = m_sect_headers.end(); 1137 1138 for (pos = m_sect_headers.begin(); pos != end; ++pos, ++idx) { 1139 s->Printf("[%2u] ", idx); 1140 ObjectFilePECOFF::DumpSectionHeader(s, *pos); 1141 } 1142 } 1143 1144 // DumpDependentModules 1145 // 1146 // Dump all of the dependent modules to the specified output stream 1147 void ObjectFilePECOFF::DumpDependentModules(lldb_private::Stream *s) { 1148 auto num_modules = ParseDependentModules(); 1149 if (num_modules > 0) { 1150 s->PutCString("Dependent Modules\n"); 1151 for (unsigned i = 0; i < num_modules; ++i) { 1152 auto spec = m_deps_filespec->GetFileSpecAtIndex(i); 1153 s->Printf(" %s\n", spec.GetFilename().GetCString()); 1154 } 1155 } 1156 } 1157 1158 bool ObjectFilePECOFF::IsWindowsSubsystem() { 1159 switch (m_coff_header_opt.subsystem) { 1160 case llvm::COFF::IMAGE_SUBSYSTEM_NATIVE: 1161 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_GUI: 1162 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_CUI: 1163 case llvm::COFF::IMAGE_SUBSYSTEM_NATIVE_WINDOWS: 1164 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_CE_GUI: 1165 case llvm::COFF::IMAGE_SUBSYSTEM_XBOX: 1166 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_BOOT_APPLICATION: 1167 return true; 1168 default: 1169 return false; 1170 } 1171 } 1172 1173 ArchSpec ObjectFilePECOFF::GetArchitecture() { 1174 uint16_t machine = m_coff_header.machine; 1175 switch (machine) { 1176 default: 1177 break; 1178 case llvm::COFF::IMAGE_FILE_MACHINE_AMD64: 1179 case llvm::COFF::IMAGE_FILE_MACHINE_I386: 1180 case llvm::COFF::IMAGE_FILE_MACHINE_POWERPC: 1181 case llvm::COFF::IMAGE_FILE_MACHINE_POWERPCFP: 1182 case llvm::COFF::IMAGE_FILE_MACHINE_ARM: 1183 case llvm::COFF::IMAGE_FILE_MACHINE_ARMNT: 1184 case llvm::COFF::IMAGE_FILE_MACHINE_THUMB: 1185 case llvm::COFF::IMAGE_FILE_MACHINE_ARM64: 1186 ArchSpec arch; 1187 arch.SetArchitecture(eArchTypeCOFF, machine, LLDB_INVALID_CPUTYPE, 1188 IsWindowsSubsystem() ? llvm::Triple::Win32 1189 : llvm::Triple::UnknownOS); 1190 return arch; 1191 } 1192 return ArchSpec(); 1193 } 1194 1195 ObjectFile::Type ObjectFilePECOFF::CalculateType() { 1196 if (m_coff_header.machine != 0) { 1197 if ((m_coff_header.flags & llvm::COFF::IMAGE_FILE_DLL) == 0) 1198 return eTypeExecutable; 1199 else 1200 return eTypeSharedLibrary; 1201 } 1202 return eTypeExecutable; 1203 } 1204 1205 ObjectFile::Strata ObjectFilePECOFF::CalculateStrata() { return eStrataUser; } 1206 1207 // PluginInterface protocol 1208 ConstString ObjectFilePECOFF::GetPluginName() { return GetPluginNameStatic(); } 1209 1210 uint32_t ObjectFilePECOFF::GetPluginVersion() { return 1; } 1211