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 "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 struct CVInfoPdb70 { 45 // 16-byte GUID 46 struct _Guid { 47 llvm::support::ulittle32_t Data1; 48 llvm::support::ulittle16_t Data2; 49 llvm::support::ulittle16_t Data3; 50 uint8_t Data4[8]; 51 } Guid; 52 53 llvm::support::ulittle32_t Age; 54 }; 55 56 static UUID GetCoffUUID(llvm::object::COFFObjectFile *coff_obj) { 57 if (!coff_obj) 58 return UUID(); 59 60 const llvm::codeview::DebugInfo *pdb_info = nullptr; 61 llvm::StringRef pdb_file; 62 63 // This part is similar with what has done in minidump parser. 64 if (!coff_obj->getDebugPDBInfo(pdb_info, pdb_file) && pdb_info) { 65 if (pdb_info->PDB70.CVSignature == llvm::OMF::Signature::PDB70) { 66 using llvm::support::endian::read16be; 67 using llvm::support::endian::read32be; 68 69 const uint8_t *sig = pdb_info->PDB70.Signature; 70 struct CVInfoPdb70 info; 71 info.Guid.Data1 = read32be(sig); 72 sig += 4; 73 info.Guid.Data2 = read16be(sig); 74 sig += 2; 75 info.Guid.Data3 = read16be(sig); 76 sig += 2; 77 memcpy(info.Guid.Data4, sig, 8); 78 79 // Return 20-byte UUID if the Age is not zero 80 if (pdb_info->PDB70.Age) { 81 info.Age = read32be(&pdb_info->PDB70.Age); 82 return UUID::fromOptionalData(&info, sizeof(info)); 83 } 84 // Otherwise return 16-byte GUID 85 return UUID::fromOptionalData(&info.Guid, sizeof(info.Guid)); 86 } 87 } 88 89 return UUID(); 90 } 91 92 char ObjectFilePECOFF::ID; 93 94 void ObjectFilePECOFF::Initialize() { 95 PluginManager::RegisterPlugin( 96 GetPluginNameStatic(), GetPluginDescriptionStatic(), CreateInstance, 97 CreateMemoryInstance, GetModuleSpecifications, SaveCore); 98 } 99 100 void ObjectFilePECOFF::Terminate() { 101 PluginManager::UnregisterPlugin(CreateInstance); 102 } 103 104 lldb_private::ConstString ObjectFilePECOFF::GetPluginNameStatic() { 105 static ConstString g_name("pe-coff"); 106 return g_name; 107 } 108 109 const char *ObjectFilePECOFF::GetPluginDescriptionStatic() { 110 return "Portable Executable and Common Object File Format object file reader " 111 "(32 and 64 bit)"; 112 } 113 114 ObjectFile *ObjectFilePECOFF::CreateInstance(const lldb::ModuleSP &module_sp, 115 DataBufferSP &data_sp, 116 lldb::offset_t data_offset, 117 const lldb_private::FileSpec *file_p, 118 lldb::offset_t file_offset, 119 lldb::offset_t length) { 120 FileSpec file = file_p ? *file_p : FileSpec(); 121 if (!data_sp) { 122 data_sp = MapFileData(file, length, file_offset); 123 if (!data_sp) 124 return nullptr; 125 data_offset = 0; 126 } 127 128 if (!ObjectFilePECOFF::MagicBytesMatch(data_sp)) 129 return nullptr; 130 131 // Update the data to contain the entire file if it doesn't already 132 if (data_sp->GetByteSize() < length) { 133 data_sp = MapFileData(file, length, file_offset); 134 if (!data_sp) 135 return nullptr; 136 } 137 138 auto objfile_up = std::make_unique<ObjectFilePECOFF>( 139 module_sp, data_sp, data_offset, file_p, file_offset, length); 140 if (!objfile_up || !objfile_up->ParseHeader()) 141 return nullptr; 142 143 // Cache coff binary. 144 if (!objfile_up->CreateBinary()) 145 return nullptr; 146 147 return objfile_up.release(); 148 } 149 150 ObjectFile *ObjectFilePECOFF::CreateMemoryInstance( 151 const lldb::ModuleSP &module_sp, lldb::DataBufferSP &data_sp, 152 const lldb::ProcessSP &process_sp, lldb::addr_t header_addr) { 153 if (!data_sp || !ObjectFilePECOFF::MagicBytesMatch(data_sp)) 154 return nullptr; 155 auto objfile_up = std::make_unique<ObjectFilePECOFF>( 156 module_sp, data_sp, process_sp, header_addr); 157 if (objfile_up.get() && objfile_up->ParseHeader()) { 158 return objfile_up.release(); 159 } 160 return nullptr; 161 } 162 163 size_t ObjectFilePECOFF::GetModuleSpecifications( 164 const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp, 165 lldb::offset_t data_offset, lldb::offset_t file_offset, 166 lldb::offset_t length, lldb_private::ModuleSpecList &specs) { 167 const size_t initial_count = specs.GetSize(); 168 if (!data_sp || !ObjectFilePECOFF::MagicBytesMatch(data_sp)) 169 return initial_count; 170 171 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 172 173 auto binary = llvm::object::createBinary(file.GetPath()); 174 175 if (!binary) { 176 LLDB_LOG_ERROR(log, binary.takeError(), 177 "Failed to create binary for file ({1}): {0}", file); 178 return initial_count; 179 } 180 181 if (!binary->getBinary()->isCOFF() && 182 !binary->getBinary()->isCOFFImportFile()) 183 return initial_count; 184 185 auto COFFObj = 186 llvm::cast<llvm::object::COFFObjectFile>(binary->getBinary()); 187 188 ModuleSpec module_spec(file); 189 ArchSpec &spec = module_spec.GetArchitecture(); 190 lldb_private::UUID &uuid = module_spec.GetUUID(); 191 if (!uuid.IsValid()) 192 uuid = GetCoffUUID(COFFObj); 193 194 switch (COFFObj->getMachine()) { 195 case MachineAmd64: 196 spec.SetTriple("x86_64-pc-windows"); 197 specs.Append(module_spec); 198 break; 199 case MachineX86: 200 spec.SetTriple("i386-pc-windows"); 201 specs.Append(module_spec); 202 spec.SetTriple("i686-pc-windows"); 203 specs.Append(module_spec); 204 break; 205 case MachineArmNt: 206 spec.SetTriple("armv7-pc-windows"); 207 specs.Append(module_spec); 208 break; 209 case MachineArm64: 210 spec.SetTriple("aarch64-pc-windows"); 211 specs.Append(module_spec); 212 break; 213 default: 214 break; 215 } 216 217 return specs.GetSize() - initial_count; 218 } 219 220 bool ObjectFilePECOFF::SaveCore(const lldb::ProcessSP &process_sp, 221 const lldb_private::FileSpec &outfile, 222 lldb_private::Status &error) { 223 return SaveMiniDump(process_sp, outfile, error); 224 } 225 226 bool ObjectFilePECOFF::MagicBytesMatch(DataBufferSP &data_sp) { 227 DataExtractor data(data_sp, eByteOrderLittle, 4); 228 lldb::offset_t offset = 0; 229 uint16_t magic = data.GetU16(&offset); 230 return magic == IMAGE_DOS_SIGNATURE; 231 } 232 233 lldb::SymbolType ObjectFilePECOFF::MapSymbolType(uint16_t coff_symbol_type) { 234 // TODO: We need to complete this mapping of COFF symbol types to LLDB ones. 235 // For now, here's a hack to make sure our function have types. 236 const auto complex_type = 237 coff_symbol_type >> llvm::COFF::SCT_COMPLEX_TYPE_SHIFT; 238 if (complex_type == llvm::COFF::IMAGE_SYM_DTYPE_FUNCTION) { 239 return lldb::eSymbolTypeCode; 240 } 241 return lldb::eSymbolTypeInvalid; 242 } 243 244 bool ObjectFilePECOFF::CreateBinary() { 245 if (m_owningbin) 246 return true; 247 248 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 249 250 auto binary = llvm::object::createBinary(m_file.GetPath()); 251 if (!binary) { 252 LLDB_LOG_ERROR(log, binary.takeError(), 253 "Failed to create binary for file ({1}): {0}", m_file); 254 return false; 255 } 256 257 // Make sure we only handle COFF format. 258 if (!binary->getBinary()->isCOFF() && 259 !binary->getBinary()->isCOFFImportFile()) 260 return false; 261 262 m_owningbin = OWNBINType(std::move(*binary)); 263 LLDB_LOGF(log, 264 "%p ObjectFilePECOFF::CreateBinary() module = %p (%s), file = " 265 "%s, binary = %p (Bin = %p)", 266 static_cast<void *>(this), static_cast<void *>(GetModule().get()), 267 GetModule()->GetSpecificationDescription().c_str(), 268 m_file ? m_file.GetPath().c_str() : "<NULL>", 269 static_cast<void *>(m_owningbin.getPointer()), 270 static_cast<void *>(m_owningbin->getBinary())); 271 return true; 272 } 273 274 ObjectFilePECOFF::ObjectFilePECOFF(const lldb::ModuleSP &module_sp, 275 DataBufferSP &data_sp, 276 lldb::offset_t data_offset, 277 const FileSpec *file, 278 lldb::offset_t file_offset, 279 lldb::offset_t length) 280 : ObjectFile(module_sp, file, file_offset, length, data_sp, data_offset), 281 m_dos_header(), m_coff_header(), m_sect_headers(), 282 m_entry_point_address(), m_deps_filespec(), m_owningbin() { 283 ::memset(&m_dos_header, 0, sizeof(m_dos_header)); 284 ::memset(&m_coff_header, 0, sizeof(m_coff_header)); 285 } 286 287 ObjectFilePECOFF::ObjectFilePECOFF(const lldb::ModuleSP &module_sp, 288 DataBufferSP &header_data_sp, 289 const lldb::ProcessSP &process_sp, 290 addr_t header_addr) 291 : ObjectFile(module_sp, process_sp, header_addr, header_data_sp), 292 m_dos_header(), m_coff_header(), m_sect_headers(), 293 m_entry_point_address(), m_deps_filespec(), m_owningbin() { 294 ::memset(&m_dos_header, 0, sizeof(m_dos_header)); 295 ::memset(&m_coff_header, 0, sizeof(m_coff_header)); 296 } 297 298 ObjectFilePECOFF::~ObjectFilePECOFF() {} 299 300 bool ObjectFilePECOFF::ParseHeader() { 301 ModuleSP module_sp(GetModule()); 302 if (module_sp) { 303 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 304 m_sect_headers.clear(); 305 m_data.SetByteOrder(eByteOrderLittle); 306 lldb::offset_t offset = 0; 307 308 if (ParseDOSHeader(m_data, m_dos_header)) { 309 offset = m_dos_header.e_lfanew; 310 uint32_t pe_signature = m_data.GetU32(&offset); 311 if (pe_signature != IMAGE_NT_SIGNATURE) 312 return false; 313 if (ParseCOFFHeader(m_data, &offset, m_coff_header)) { 314 if (m_coff_header.hdrsize > 0) 315 ParseCOFFOptionalHeader(&offset); 316 ParseSectionHeaders(offset); 317 } 318 m_data.SetAddressByteSize(GetAddressByteSize()); 319 return true; 320 } 321 } 322 return false; 323 } 324 325 bool ObjectFilePECOFF::SetLoadAddress(Target &target, addr_t value, 326 bool value_is_offset) { 327 bool changed = false; 328 ModuleSP module_sp = GetModule(); 329 if (module_sp) { 330 size_t num_loaded_sections = 0; 331 SectionList *section_list = GetSectionList(); 332 if (section_list) { 333 if (!value_is_offset) { 334 value -= m_image_base; 335 } 336 337 const size_t num_sections = section_list->GetSize(); 338 size_t sect_idx = 0; 339 340 for (sect_idx = 0; sect_idx < num_sections; ++sect_idx) { 341 // Iterate through the object file sections to find all of the sections 342 // that have SHF_ALLOC in their flag bits. 343 SectionSP section_sp(section_list->GetSectionAtIndex(sect_idx)); 344 if (section_sp && !section_sp->IsThreadSpecific()) { 345 if (target.GetSectionLoadList().SetSectionLoadAddress( 346 section_sp, section_sp->GetFileAddress() + value)) 347 ++num_loaded_sections; 348 } 349 } 350 changed = num_loaded_sections > 0; 351 } 352 } 353 return changed; 354 } 355 356 ByteOrder ObjectFilePECOFF::GetByteOrder() const { return eByteOrderLittle; } 357 358 bool ObjectFilePECOFF::IsExecutable() const { 359 return (m_coff_header.flags & llvm::COFF::IMAGE_FILE_DLL) == 0; 360 } 361 362 uint32_t ObjectFilePECOFF::GetAddressByteSize() const { 363 if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32_PLUS) 364 return 8; 365 else if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32) 366 return 4; 367 return 4; 368 } 369 370 // NeedsEndianSwap 371 // 372 // Return true if an endian swap needs to occur when extracting data from this 373 // file. 374 bool ObjectFilePECOFF::NeedsEndianSwap() const { 375 #if defined(__LITTLE_ENDIAN__) 376 return false; 377 #else 378 return true; 379 #endif 380 } 381 // ParseDOSHeader 382 bool ObjectFilePECOFF::ParseDOSHeader(DataExtractor &data, 383 dos_header_t &dos_header) { 384 bool success = false; 385 lldb::offset_t offset = 0; 386 success = data.ValidOffsetForDataOfSize(0, sizeof(dos_header)); 387 388 if (success) { 389 dos_header.e_magic = data.GetU16(&offset); // Magic number 390 success = dos_header.e_magic == IMAGE_DOS_SIGNATURE; 391 392 if (success) { 393 dos_header.e_cblp = data.GetU16(&offset); // Bytes on last page of file 394 dos_header.e_cp = data.GetU16(&offset); // Pages in file 395 dos_header.e_crlc = data.GetU16(&offset); // Relocations 396 dos_header.e_cparhdr = 397 data.GetU16(&offset); // Size of header in paragraphs 398 dos_header.e_minalloc = 399 data.GetU16(&offset); // Minimum extra paragraphs needed 400 dos_header.e_maxalloc = 401 data.GetU16(&offset); // Maximum extra paragraphs needed 402 dos_header.e_ss = data.GetU16(&offset); // Initial (relative) SS value 403 dos_header.e_sp = data.GetU16(&offset); // Initial SP value 404 dos_header.e_csum = data.GetU16(&offset); // Checksum 405 dos_header.e_ip = data.GetU16(&offset); // Initial IP value 406 dos_header.e_cs = data.GetU16(&offset); // Initial (relative) CS value 407 dos_header.e_lfarlc = 408 data.GetU16(&offset); // File address of relocation table 409 dos_header.e_ovno = data.GetU16(&offset); // Overlay number 410 411 dos_header.e_res[0] = data.GetU16(&offset); // Reserved words 412 dos_header.e_res[1] = data.GetU16(&offset); // Reserved words 413 dos_header.e_res[2] = data.GetU16(&offset); // Reserved words 414 dos_header.e_res[3] = data.GetU16(&offset); // Reserved words 415 416 dos_header.e_oemid = 417 data.GetU16(&offset); // OEM identifier (for e_oeminfo) 418 dos_header.e_oeminfo = 419 data.GetU16(&offset); // OEM information; e_oemid specific 420 dos_header.e_res2[0] = data.GetU16(&offset); // Reserved words 421 dos_header.e_res2[1] = data.GetU16(&offset); // Reserved words 422 dos_header.e_res2[2] = data.GetU16(&offset); // Reserved words 423 dos_header.e_res2[3] = data.GetU16(&offset); // Reserved words 424 dos_header.e_res2[4] = data.GetU16(&offset); // Reserved words 425 dos_header.e_res2[5] = data.GetU16(&offset); // Reserved words 426 dos_header.e_res2[6] = data.GetU16(&offset); // Reserved words 427 dos_header.e_res2[7] = data.GetU16(&offset); // Reserved words 428 dos_header.e_res2[8] = data.GetU16(&offset); // Reserved words 429 dos_header.e_res2[9] = data.GetU16(&offset); // Reserved words 430 431 dos_header.e_lfanew = 432 data.GetU32(&offset); // File address of new exe header 433 } 434 } 435 if (!success) 436 memset(&dos_header, 0, sizeof(dos_header)); 437 return success; 438 } 439 440 // ParserCOFFHeader 441 bool ObjectFilePECOFF::ParseCOFFHeader(DataExtractor &data, 442 lldb::offset_t *offset_ptr, 443 coff_header_t &coff_header) { 444 bool success = 445 data.ValidOffsetForDataOfSize(*offset_ptr, sizeof(coff_header)); 446 if (success) { 447 coff_header.machine = data.GetU16(offset_ptr); 448 coff_header.nsects = data.GetU16(offset_ptr); 449 coff_header.modtime = data.GetU32(offset_ptr); 450 coff_header.symoff = data.GetU32(offset_ptr); 451 coff_header.nsyms = data.GetU32(offset_ptr); 452 coff_header.hdrsize = data.GetU16(offset_ptr); 453 coff_header.flags = data.GetU16(offset_ptr); 454 } 455 if (!success) 456 memset(&coff_header, 0, sizeof(coff_header)); 457 return success; 458 } 459 460 bool ObjectFilePECOFF::ParseCOFFOptionalHeader(lldb::offset_t *offset_ptr) { 461 bool success = false; 462 const lldb::offset_t end_offset = *offset_ptr + m_coff_header.hdrsize; 463 if (*offset_ptr < end_offset) { 464 success = true; 465 m_coff_header_opt.magic = m_data.GetU16(offset_ptr); 466 m_coff_header_opt.major_linker_version = m_data.GetU8(offset_ptr); 467 m_coff_header_opt.minor_linker_version = m_data.GetU8(offset_ptr); 468 m_coff_header_opt.code_size = m_data.GetU32(offset_ptr); 469 m_coff_header_opt.data_size = m_data.GetU32(offset_ptr); 470 m_coff_header_opt.bss_size = m_data.GetU32(offset_ptr); 471 m_coff_header_opt.entry = m_data.GetU32(offset_ptr); 472 m_coff_header_opt.code_offset = m_data.GetU32(offset_ptr); 473 474 const uint32_t addr_byte_size = GetAddressByteSize(); 475 476 if (*offset_ptr < end_offset) { 477 if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32) { 478 // PE32 only 479 m_coff_header_opt.data_offset = m_data.GetU32(offset_ptr); 480 } else 481 m_coff_header_opt.data_offset = 0; 482 483 if (*offset_ptr < end_offset) { 484 m_coff_header_opt.image_base = 485 m_data.GetMaxU64(offset_ptr, addr_byte_size); 486 m_coff_header_opt.sect_alignment = m_data.GetU32(offset_ptr); 487 m_coff_header_opt.file_alignment = m_data.GetU32(offset_ptr); 488 m_coff_header_opt.major_os_system_version = m_data.GetU16(offset_ptr); 489 m_coff_header_opt.minor_os_system_version = m_data.GetU16(offset_ptr); 490 m_coff_header_opt.major_image_version = m_data.GetU16(offset_ptr); 491 m_coff_header_opt.minor_image_version = m_data.GetU16(offset_ptr); 492 m_coff_header_opt.major_subsystem_version = m_data.GetU16(offset_ptr); 493 m_coff_header_opt.minor_subsystem_version = m_data.GetU16(offset_ptr); 494 m_coff_header_opt.reserved1 = m_data.GetU32(offset_ptr); 495 m_coff_header_opt.image_size = m_data.GetU32(offset_ptr); 496 m_coff_header_opt.header_size = m_data.GetU32(offset_ptr); 497 m_coff_header_opt.checksum = m_data.GetU32(offset_ptr); 498 m_coff_header_opt.subsystem = m_data.GetU16(offset_ptr); 499 m_coff_header_opt.dll_flags = m_data.GetU16(offset_ptr); 500 m_coff_header_opt.stack_reserve_size = 501 m_data.GetMaxU64(offset_ptr, addr_byte_size); 502 m_coff_header_opt.stack_commit_size = 503 m_data.GetMaxU64(offset_ptr, addr_byte_size); 504 m_coff_header_opt.heap_reserve_size = 505 m_data.GetMaxU64(offset_ptr, addr_byte_size); 506 m_coff_header_opt.heap_commit_size = 507 m_data.GetMaxU64(offset_ptr, addr_byte_size); 508 m_coff_header_opt.loader_flags = m_data.GetU32(offset_ptr); 509 uint32_t num_data_dir_entries = m_data.GetU32(offset_ptr); 510 m_coff_header_opt.data_dirs.clear(); 511 m_coff_header_opt.data_dirs.resize(num_data_dir_entries); 512 uint32_t i; 513 for (i = 0; i < num_data_dir_entries; i++) { 514 m_coff_header_opt.data_dirs[i].vmaddr = m_data.GetU32(offset_ptr); 515 m_coff_header_opt.data_dirs[i].vmsize = m_data.GetU32(offset_ptr); 516 } 517 518 m_image_base = m_coff_header_opt.image_base; 519 } 520 } 521 } 522 // Make sure we are on track for section data which follows 523 *offset_ptr = end_offset; 524 return success; 525 } 526 527 uint32_t ObjectFilePECOFF::GetRVA(const Address &addr) const { 528 return addr.GetFileAddress() - m_image_base; 529 } 530 531 Address ObjectFilePECOFF::GetAddress(uint32_t rva) { 532 SectionList *sect_list = GetSectionList(); 533 if (!sect_list) 534 return Address(GetFileAddress(rva)); 535 536 return Address(GetFileAddress(rva), sect_list); 537 } 538 539 lldb::addr_t ObjectFilePECOFF::GetFileAddress(uint32_t rva) const { 540 return m_image_base + rva; 541 } 542 543 DataExtractor ObjectFilePECOFF::ReadImageData(uint32_t offset, size_t size) { 544 if (!size) 545 return {}; 546 547 if (m_file) { 548 // A bit of a hack, but we intend to write to this buffer, so we can't 549 // mmap it. 550 auto buffer_sp = MapFileData(m_file, size, offset); 551 return DataExtractor(buffer_sp, GetByteOrder(), GetAddressByteSize()); 552 } 553 ProcessSP process_sp(m_process_wp.lock()); 554 DataExtractor data; 555 if (process_sp) { 556 auto data_up = std::make_unique<DataBufferHeap>(size, 0); 557 Status readmem_error; 558 size_t bytes_read = 559 process_sp->ReadMemory(m_image_base + offset, data_up->GetBytes(), 560 data_up->GetByteSize(), readmem_error); 561 if (bytes_read == size) { 562 DataBufferSP buffer_sp(data_up.release()); 563 data.SetData(buffer_sp, 0, buffer_sp->GetByteSize()); 564 } 565 } 566 return data; 567 } 568 569 DataExtractor ObjectFilePECOFF::ReadImageDataByRVA(uint32_t rva, size_t size) { 570 if (m_file) { 571 Address addr = GetAddress(rva); 572 SectionSP sect = addr.GetSection(); 573 if (!sect) 574 return {}; 575 rva = sect->GetFileOffset() + addr.GetOffset(); 576 } 577 578 return ReadImageData(rva, size); 579 } 580 581 // ParseSectionHeaders 582 bool ObjectFilePECOFF::ParseSectionHeaders( 583 uint32_t section_header_data_offset) { 584 const uint32_t nsects = m_coff_header.nsects; 585 m_sect_headers.clear(); 586 587 if (nsects > 0) { 588 const size_t section_header_byte_size = nsects * sizeof(section_header_t); 589 DataExtractor section_header_data = 590 ReadImageData(section_header_data_offset, section_header_byte_size); 591 592 lldb::offset_t offset = 0; 593 if (section_header_data.ValidOffsetForDataOfSize( 594 offset, section_header_byte_size)) { 595 m_sect_headers.resize(nsects); 596 597 for (uint32_t idx = 0; idx < nsects; ++idx) { 598 const void *name_data = section_header_data.GetData(&offset, 8); 599 if (name_data) { 600 memcpy(m_sect_headers[idx].name, name_data, 8); 601 m_sect_headers[idx].vmsize = section_header_data.GetU32(&offset); 602 m_sect_headers[idx].vmaddr = section_header_data.GetU32(&offset); 603 m_sect_headers[idx].size = section_header_data.GetU32(&offset); 604 m_sect_headers[idx].offset = section_header_data.GetU32(&offset); 605 m_sect_headers[idx].reloff = section_header_data.GetU32(&offset); 606 m_sect_headers[idx].lineoff = section_header_data.GetU32(&offset); 607 m_sect_headers[idx].nreloc = section_header_data.GetU16(&offset); 608 m_sect_headers[idx].nline = section_header_data.GetU16(&offset); 609 m_sect_headers[idx].flags = section_header_data.GetU32(&offset); 610 } 611 } 612 } 613 } 614 615 return !m_sect_headers.empty(); 616 } 617 618 llvm::StringRef ObjectFilePECOFF::GetSectionName(const section_header_t §) { 619 llvm::StringRef hdr_name(sect.name, llvm::array_lengthof(sect.name)); 620 hdr_name = hdr_name.split('\0').first; 621 if (hdr_name.consume_front("/")) { 622 lldb::offset_t stroff; 623 if (!to_integer(hdr_name, stroff, 10)) 624 return ""; 625 lldb::offset_t string_file_offset = 626 m_coff_header.symoff + (m_coff_header.nsyms * 18) + stroff; 627 if (const char *name = m_data.GetCStr(&string_file_offset)) 628 return name; 629 return ""; 630 } 631 return hdr_name; 632 } 633 634 // GetNListSymtab 635 Symtab *ObjectFilePECOFF::GetSymtab() { 636 ModuleSP module_sp(GetModule()); 637 if (module_sp) { 638 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 639 if (m_symtab_up == nullptr) { 640 SectionList *sect_list = GetSectionList(); 641 m_symtab_up.reset(new Symtab(this)); 642 std::lock_guard<std::recursive_mutex> guard(m_symtab_up->GetMutex()); 643 644 const uint32_t num_syms = m_coff_header.nsyms; 645 646 if (m_file && num_syms > 0 && m_coff_header.symoff > 0) { 647 const uint32_t symbol_size = 18; 648 const size_t symbol_data_size = num_syms * symbol_size; 649 // Include the 4-byte string table size at the end of the symbols 650 DataExtractor symtab_data = 651 ReadImageData(m_coff_header.symoff, symbol_data_size + 4); 652 lldb::offset_t offset = symbol_data_size; 653 const uint32_t strtab_size = symtab_data.GetU32(&offset); 654 if (strtab_size > 0) { 655 DataExtractor strtab_data = ReadImageData( 656 m_coff_header.symoff + symbol_data_size, strtab_size); 657 658 // First 4 bytes should be zeroed after strtab_size has been read, 659 // because it is used as offset 0 to encode a NULL string. 660 uint32_t *strtab_data_start = const_cast<uint32_t *>( 661 reinterpret_cast<const uint32_t *>(strtab_data.GetDataStart())); 662 strtab_data_start[0] = 0; 663 664 offset = 0; 665 std::string symbol_name; 666 Symbol *symbols = m_symtab_up->Resize(num_syms); 667 for (uint32_t i = 0; i < num_syms; ++i) { 668 coff_symbol_t symbol; 669 const uint32_t symbol_offset = offset; 670 const char *symbol_name_cstr = nullptr; 671 // If the first 4 bytes of the symbol string are zero, then they 672 // are followed by a 4-byte string table offset. Else these 673 // 8 bytes contain the symbol name 674 if (symtab_data.GetU32(&offset) == 0) { 675 // Long string that doesn't fit into the symbol table name, so 676 // now we must read the 4 byte string table offset 677 uint32_t strtab_offset = symtab_data.GetU32(&offset); 678 symbol_name_cstr = strtab_data.PeekCStr(strtab_offset); 679 symbol_name.assign(symbol_name_cstr); 680 } else { 681 // Short string that fits into the symbol table name which is 8 682 // bytes 683 offset += sizeof(symbol.name) - 4; // Skip remaining 684 symbol_name_cstr = symtab_data.PeekCStr(symbol_offset); 685 if (symbol_name_cstr == nullptr) 686 break; 687 symbol_name.assign(symbol_name_cstr, sizeof(symbol.name)); 688 } 689 symbol.value = symtab_data.GetU32(&offset); 690 symbol.sect = symtab_data.GetU16(&offset); 691 symbol.type = symtab_data.GetU16(&offset); 692 symbol.storage = symtab_data.GetU8(&offset); 693 symbol.naux = symtab_data.GetU8(&offset); 694 symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); 695 if ((int16_t)symbol.sect >= 1) { 696 Address symbol_addr(sect_list->FindSectionByID(symbol.sect), 697 symbol.value); 698 symbols[i].GetAddressRef() = symbol_addr; 699 symbols[i].SetType(MapSymbolType(symbol.type)); 700 } 701 702 if (symbol.naux > 0) { 703 i += symbol.naux; 704 offset += symbol_size; 705 } 706 } 707 } 708 } 709 710 // Read export header 711 if (coff_data_dir_export_table < m_coff_header_opt.data_dirs.size() && 712 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmsize > 0 && 713 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr > 0) { 714 export_directory_entry export_table; 715 uint32_t data_start = 716 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr; 717 718 DataExtractor symtab_data = ReadImageDataByRVA( 719 data_start, m_coff_header_opt.data_dirs[0].vmsize); 720 lldb::offset_t offset = 0; 721 722 // Read export_table header 723 export_table.characteristics = symtab_data.GetU32(&offset); 724 export_table.time_date_stamp = symtab_data.GetU32(&offset); 725 export_table.major_version = symtab_data.GetU16(&offset); 726 export_table.minor_version = symtab_data.GetU16(&offset); 727 export_table.name = symtab_data.GetU32(&offset); 728 export_table.base = symtab_data.GetU32(&offset); 729 export_table.number_of_functions = symtab_data.GetU32(&offset); 730 export_table.number_of_names = symtab_data.GetU32(&offset); 731 export_table.address_of_functions = symtab_data.GetU32(&offset); 732 export_table.address_of_names = symtab_data.GetU32(&offset); 733 export_table.address_of_name_ordinals = symtab_data.GetU32(&offset); 734 735 bool has_ordinal = export_table.address_of_name_ordinals != 0; 736 737 lldb::offset_t name_offset = export_table.address_of_names - data_start; 738 lldb::offset_t name_ordinal_offset = 739 export_table.address_of_name_ordinals - data_start; 740 741 Symbol *symbols = m_symtab_up->Resize(export_table.number_of_names); 742 743 std::string symbol_name; 744 745 // Read each export table entry 746 for (size_t i = 0; i < export_table.number_of_names; ++i) { 747 uint32_t name_ordinal = 748 has_ordinal ? symtab_data.GetU16(&name_ordinal_offset) : i; 749 uint32_t name_address = symtab_data.GetU32(&name_offset); 750 751 const char *symbol_name_cstr = 752 symtab_data.PeekCStr(name_address - data_start); 753 symbol_name.assign(symbol_name_cstr); 754 755 lldb::offset_t function_offset = export_table.address_of_functions - 756 data_start + 757 sizeof(uint32_t) * name_ordinal; 758 uint32_t function_rva = symtab_data.GetU32(&function_offset); 759 760 Address symbol_addr(m_coff_header_opt.image_base + function_rva, 761 sect_list); 762 symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); 763 symbols[i].GetAddressRef() = symbol_addr; 764 symbols[i].SetType(lldb::eSymbolTypeCode); 765 symbols[i].SetDebug(true); 766 } 767 } 768 m_symtab_up->CalculateSymbolSizes(); 769 } 770 } 771 return m_symtab_up.get(); 772 } 773 774 std::unique_ptr<CallFrameInfo> ObjectFilePECOFF::CreateCallFrameInfo() { 775 if (coff_data_dir_exception_table >= m_coff_header_opt.data_dirs.size()) 776 return {}; 777 778 data_directory data_dir_exception = 779 m_coff_header_opt.data_dirs[coff_data_dir_exception_table]; 780 if (!data_dir_exception.vmaddr) 781 return {}; 782 783 if (m_coff_header.machine != llvm::COFF::IMAGE_FILE_MACHINE_AMD64) 784 return {}; 785 786 return std::make_unique<PECallFrameInfo>(*this, data_dir_exception.vmaddr, 787 data_dir_exception.vmsize); 788 } 789 790 bool ObjectFilePECOFF::IsStripped() { 791 // TODO: determine this for COFF 792 return false; 793 } 794 795 SectionType ObjectFilePECOFF::GetSectionType(llvm::StringRef sect_name, 796 const section_header_t §) { 797 ConstString const_sect_name(sect_name); 798 static ConstString g_code_sect_name(".code"); 799 static ConstString g_CODE_sect_name("CODE"); 800 static ConstString g_data_sect_name(".data"); 801 static ConstString g_DATA_sect_name("DATA"); 802 static ConstString g_bss_sect_name(".bss"); 803 static ConstString g_BSS_sect_name("BSS"); 804 805 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_CODE && 806 ((const_sect_name == g_code_sect_name) || 807 (const_sect_name == g_CODE_sect_name))) { 808 return eSectionTypeCode; 809 } 810 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA && 811 ((const_sect_name == g_data_sect_name) || 812 (const_sect_name == g_DATA_sect_name))) { 813 if (sect.size == 0 && sect.offset == 0) 814 return eSectionTypeZeroFill; 815 else 816 return eSectionTypeData; 817 } 818 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA && 819 ((const_sect_name == g_bss_sect_name) || 820 (const_sect_name == g_BSS_sect_name))) { 821 if (sect.size == 0) 822 return eSectionTypeZeroFill; 823 else 824 return eSectionTypeData; 825 } 826 827 SectionType section_type = 828 llvm::StringSwitch<SectionType>(sect_name) 829 .Case(".debug", eSectionTypeDebug) 830 .Case(".stabstr", eSectionTypeDataCString) 831 .Case(".reloc", eSectionTypeOther) 832 .Case(".debug_abbrev", eSectionTypeDWARFDebugAbbrev) 833 .Case(".debug_aranges", eSectionTypeDWARFDebugAranges) 834 .Case(".debug_frame", eSectionTypeDWARFDebugFrame) 835 .Case(".debug_info", eSectionTypeDWARFDebugInfo) 836 .Case(".debug_line", eSectionTypeDWARFDebugLine) 837 .Case(".debug_loc", eSectionTypeDWARFDebugLoc) 838 .Case(".debug_loclists", eSectionTypeDWARFDebugLocLists) 839 .Case(".debug_macinfo", eSectionTypeDWARFDebugMacInfo) 840 .Case(".debug_names", eSectionTypeDWARFDebugNames) 841 .Case(".debug_pubnames", eSectionTypeDWARFDebugPubNames) 842 .Case(".debug_pubtypes", eSectionTypeDWARFDebugPubTypes) 843 .Case(".debug_ranges", eSectionTypeDWARFDebugRanges) 844 .Case(".debug_str", eSectionTypeDWARFDebugStr) 845 .Case(".debug_types", eSectionTypeDWARFDebugTypes) 846 // .eh_frame can be truncated to 8 chars. 847 .Cases(".eh_frame", ".eh_fram", eSectionTypeEHFrame) 848 .Case(".gosymtab", eSectionTypeGoSymtab) 849 .Default(eSectionTypeInvalid); 850 if (section_type != eSectionTypeInvalid) 851 return section_type; 852 853 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_CODE) 854 return eSectionTypeCode; 855 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA) 856 return eSectionTypeData; 857 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA) { 858 if (sect.size == 0) 859 return eSectionTypeZeroFill; 860 else 861 return eSectionTypeData; 862 } 863 return eSectionTypeOther; 864 } 865 866 void ObjectFilePECOFF::CreateSections(SectionList &unified_section_list) { 867 if (m_sections_up) 868 return; 869 m_sections_up.reset(new SectionList()); 870 871 ModuleSP module_sp(GetModule()); 872 if (module_sp) { 873 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 874 875 SectionSP header_sp = std::make_shared<Section>( 876 module_sp, this, ~user_id_t(0), ConstString("PECOFF header"), 877 eSectionTypeOther, m_coff_header_opt.image_base, 878 m_coff_header_opt.header_size, 879 /*file_offset*/ 0, m_coff_header_opt.header_size, 880 m_coff_header_opt.sect_alignment, 881 /*flags*/ 0); 882 header_sp->SetPermissions(ePermissionsReadable); 883 m_sections_up->AddSection(header_sp); 884 unified_section_list.AddSection(header_sp); 885 886 const uint32_t nsects = m_sect_headers.size(); 887 ModuleSP module_sp(GetModule()); 888 for (uint32_t idx = 0; idx < nsects; ++idx) { 889 llvm::StringRef sect_name = GetSectionName(m_sect_headers[idx]); 890 ConstString const_sect_name(sect_name); 891 SectionType section_type = GetSectionType(sect_name, m_sect_headers[idx]); 892 893 SectionSP section_sp(new Section( 894 module_sp, // Module to which this section belongs 895 this, // Object file to which this section belongs 896 idx + 1, // Section ID is the 1 based section index. 897 const_sect_name, // Name of this section 898 section_type, 899 m_coff_header_opt.image_base + 900 m_sect_headers[idx].vmaddr, // File VM address == addresses as 901 // they are found in the object file 902 m_sect_headers[idx].vmsize, // VM size in bytes of this section 903 m_sect_headers[idx] 904 .offset, // Offset to the data for this section in the file 905 m_sect_headers[idx] 906 .size, // Size in bytes of this section as found in the file 907 m_coff_header_opt.sect_alignment, // Section alignment 908 m_sect_headers[idx].flags)); // Flags for this section 909 910 uint32_t permissions = 0; 911 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_EXECUTE) 912 permissions |= ePermissionsExecutable; 913 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_READ) 914 permissions |= ePermissionsReadable; 915 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_WRITE) 916 permissions |= ePermissionsWritable; 917 section_sp->SetPermissions(permissions); 918 919 m_sections_up->AddSection(section_sp); 920 unified_section_list.AddSection(section_sp); 921 } 922 } 923 } 924 925 UUID ObjectFilePECOFF::GetUUID() { 926 if (m_uuid.IsValid()) 927 return m_uuid; 928 929 if (!CreateBinary()) 930 return UUID(); 931 932 auto COFFObj = 933 llvm::cast<llvm::object::COFFObjectFile>(m_owningbin->getBinary()); 934 935 m_uuid = GetCoffUUID(COFFObj); 936 return m_uuid; 937 } 938 939 uint32_t ObjectFilePECOFF::ParseDependentModules() { 940 ModuleSP module_sp(GetModule()); 941 if (!module_sp) 942 return 0; 943 944 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 945 if (m_deps_filespec) 946 return m_deps_filespec->GetSize(); 947 948 // Cache coff binary if it is not done yet. 949 if (!CreateBinary()) 950 return 0; 951 952 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 953 LLDB_LOGF(log, 954 "%p ObjectFilePECOFF::ParseDependentModules() module = %p " 955 "(%s), binary = %p (Bin = %p)", 956 static_cast<void *>(this), static_cast<void *>(module_sp.get()), 957 module_sp->GetSpecificationDescription().c_str(), 958 static_cast<void *>(m_owningbin.getPointer()), 959 static_cast<void *>(m_owningbin->getBinary())); 960 961 auto COFFObj = 962 llvm::dyn_cast<llvm::object::COFFObjectFile>(m_owningbin->getBinary()); 963 if (!COFFObj) 964 return 0; 965 966 m_deps_filespec = FileSpecList(); 967 968 for (const auto &entry : COFFObj->import_directories()) { 969 llvm::StringRef dll_name; 970 auto ec = entry.getName(dll_name); 971 // Report a bogus entry. 972 if (ec != std::error_code()) { 973 LLDB_LOGF(log, 974 "ObjectFilePECOFF::ParseDependentModules() - failed to get " 975 "import directory entry name: %s", 976 ec.message().c_str()); 977 continue; 978 } 979 980 // At this moment we only have the base name of the DLL. The full path can 981 // only be seen after the dynamic loading. Our best guess is Try to get it 982 // with the help of the object file's directory. 983 llvm::SmallString<128> dll_fullpath; 984 FileSpec dll_specs(dll_name); 985 dll_specs.GetDirectory().SetString(m_file.GetDirectory().GetCString()); 986 987 if (!llvm::sys::fs::real_path(dll_specs.GetPath(), dll_fullpath)) 988 m_deps_filespec->EmplaceBack(dll_fullpath); 989 else { 990 // Known DLLs or DLL not found in the object file directory. 991 m_deps_filespec->EmplaceBack(dll_name); 992 } 993 } 994 return m_deps_filespec->GetSize(); 995 } 996 997 uint32_t ObjectFilePECOFF::GetDependentModules(FileSpecList &files) { 998 auto num_modules = ParseDependentModules(); 999 auto original_size = files.GetSize(); 1000 1001 for (unsigned i = 0; i < num_modules; ++i) 1002 files.AppendIfUnique(m_deps_filespec->GetFileSpecAtIndex(i)); 1003 1004 return files.GetSize() - original_size; 1005 } 1006 1007 lldb_private::Address ObjectFilePECOFF::GetEntryPointAddress() { 1008 if (m_entry_point_address.IsValid()) 1009 return m_entry_point_address; 1010 1011 if (!ParseHeader() || !IsExecutable()) 1012 return m_entry_point_address; 1013 1014 SectionList *section_list = GetSectionList(); 1015 addr_t file_addr = m_coff_header_opt.entry + m_coff_header_opt.image_base; 1016 1017 if (!section_list) 1018 m_entry_point_address.SetOffset(file_addr); 1019 else 1020 m_entry_point_address.ResolveAddressUsingFileSections(file_addr, 1021 section_list); 1022 return m_entry_point_address; 1023 } 1024 1025 Address ObjectFilePECOFF::GetBaseAddress() { 1026 return Address(GetSectionList()->GetSectionAtIndex(0), 0); 1027 } 1028 1029 // Dump 1030 // 1031 // Dump the specifics of the runtime file container (such as any headers 1032 // segments, sections, etc). 1033 void ObjectFilePECOFF::Dump(Stream *s) { 1034 ModuleSP module_sp(GetModule()); 1035 if (module_sp) { 1036 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 1037 s->Printf("%p: ", static_cast<void *>(this)); 1038 s->Indent(); 1039 s->PutCString("ObjectFilePECOFF"); 1040 1041 ArchSpec header_arch = GetArchitecture(); 1042 1043 *s << ", file = '" << m_file 1044 << "', arch = " << header_arch.GetArchitectureName() << "\n"; 1045 1046 SectionList *sections = GetSectionList(); 1047 if (sections) 1048 sections->Dump(s, nullptr, true, UINT32_MAX); 1049 1050 if (m_symtab_up) 1051 m_symtab_up->Dump(s, nullptr, eSortOrderNone); 1052 1053 if (m_dos_header.e_magic) 1054 DumpDOSHeader(s, m_dos_header); 1055 if (m_coff_header.machine) { 1056 DumpCOFFHeader(s, m_coff_header); 1057 if (m_coff_header.hdrsize) 1058 DumpOptCOFFHeader(s, m_coff_header_opt); 1059 } 1060 s->EOL(); 1061 DumpSectionHeaders(s); 1062 s->EOL(); 1063 1064 DumpDependentModules(s); 1065 s->EOL(); 1066 } 1067 } 1068 1069 // DumpDOSHeader 1070 // 1071 // Dump the MS-DOS header to the specified output stream 1072 void ObjectFilePECOFF::DumpDOSHeader(Stream *s, const dos_header_t &header) { 1073 s->PutCString("MSDOS Header\n"); 1074 s->Printf(" e_magic = 0x%4.4x\n", header.e_magic); 1075 s->Printf(" e_cblp = 0x%4.4x\n", header.e_cblp); 1076 s->Printf(" e_cp = 0x%4.4x\n", header.e_cp); 1077 s->Printf(" e_crlc = 0x%4.4x\n", header.e_crlc); 1078 s->Printf(" e_cparhdr = 0x%4.4x\n", header.e_cparhdr); 1079 s->Printf(" e_minalloc = 0x%4.4x\n", header.e_minalloc); 1080 s->Printf(" e_maxalloc = 0x%4.4x\n", header.e_maxalloc); 1081 s->Printf(" e_ss = 0x%4.4x\n", header.e_ss); 1082 s->Printf(" e_sp = 0x%4.4x\n", header.e_sp); 1083 s->Printf(" e_csum = 0x%4.4x\n", header.e_csum); 1084 s->Printf(" e_ip = 0x%4.4x\n", header.e_ip); 1085 s->Printf(" e_cs = 0x%4.4x\n", header.e_cs); 1086 s->Printf(" e_lfarlc = 0x%4.4x\n", header.e_lfarlc); 1087 s->Printf(" e_ovno = 0x%4.4x\n", header.e_ovno); 1088 s->Printf(" e_res[4] = { 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x }\n", 1089 header.e_res[0], header.e_res[1], header.e_res[2], header.e_res[3]); 1090 s->Printf(" e_oemid = 0x%4.4x\n", header.e_oemid); 1091 s->Printf(" e_oeminfo = 0x%4.4x\n", header.e_oeminfo); 1092 s->Printf(" e_res2[10] = { 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, " 1093 "0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x }\n", 1094 header.e_res2[0], header.e_res2[1], header.e_res2[2], 1095 header.e_res2[3], header.e_res2[4], header.e_res2[5], 1096 header.e_res2[6], header.e_res2[7], header.e_res2[8], 1097 header.e_res2[9]); 1098 s->Printf(" e_lfanew = 0x%8.8x\n", header.e_lfanew); 1099 } 1100 1101 // DumpCOFFHeader 1102 // 1103 // Dump the COFF header to the specified output stream 1104 void ObjectFilePECOFF::DumpCOFFHeader(Stream *s, const coff_header_t &header) { 1105 s->PutCString("COFF Header\n"); 1106 s->Printf(" machine = 0x%4.4x\n", header.machine); 1107 s->Printf(" nsects = 0x%4.4x\n", header.nsects); 1108 s->Printf(" modtime = 0x%8.8x\n", header.modtime); 1109 s->Printf(" symoff = 0x%8.8x\n", header.symoff); 1110 s->Printf(" nsyms = 0x%8.8x\n", header.nsyms); 1111 s->Printf(" hdrsize = 0x%4.4x\n", header.hdrsize); 1112 } 1113 1114 // DumpOptCOFFHeader 1115 // 1116 // Dump the optional COFF header to the specified output stream 1117 void ObjectFilePECOFF::DumpOptCOFFHeader(Stream *s, 1118 const coff_opt_header_t &header) { 1119 s->PutCString("Optional COFF Header\n"); 1120 s->Printf(" magic = 0x%4.4x\n", header.magic); 1121 s->Printf(" major_linker_version = 0x%2.2x\n", 1122 header.major_linker_version); 1123 s->Printf(" minor_linker_version = 0x%2.2x\n", 1124 header.minor_linker_version); 1125 s->Printf(" code_size = 0x%8.8x\n", header.code_size); 1126 s->Printf(" data_size = 0x%8.8x\n", header.data_size); 1127 s->Printf(" bss_size = 0x%8.8x\n", header.bss_size); 1128 s->Printf(" entry = 0x%8.8x\n", header.entry); 1129 s->Printf(" code_offset = 0x%8.8x\n", header.code_offset); 1130 s->Printf(" data_offset = 0x%8.8x\n", header.data_offset); 1131 s->Printf(" image_base = 0x%16.16" PRIx64 "\n", 1132 header.image_base); 1133 s->Printf(" sect_alignment = 0x%8.8x\n", header.sect_alignment); 1134 s->Printf(" file_alignment = 0x%8.8x\n", header.file_alignment); 1135 s->Printf(" major_os_system_version = 0x%4.4x\n", 1136 header.major_os_system_version); 1137 s->Printf(" minor_os_system_version = 0x%4.4x\n", 1138 header.minor_os_system_version); 1139 s->Printf(" major_image_version = 0x%4.4x\n", 1140 header.major_image_version); 1141 s->Printf(" minor_image_version = 0x%4.4x\n", 1142 header.minor_image_version); 1143 s->Printf(" major_subsystem_version = 0x%4.4x\n", 1144 header.major_subsystem_version); 1145 s->Printf(" minor_subsystem_version = 0x%4.4x\n", 1146 header.minor_subsystem_version); 1147 s->Printf(" reserved1 = 0x%8.8x\n", header.reserved1); 1148 s->Printf(" image_size = 0x%8.8x\n", header.image_size); 1149 s->Printf(" header_size = 0x%8.8x\n", header.header_size); 1150 s->Printf(" checksum = 0x%8.8x\n", header.checksum); 1151 s->Printf(" subsystem = 0x%4.4x\n", header.subsystem); 1152 s->Printf(" dll_flags = 0x%4.4x\n", header.dll_flags); 1153 s->Printf(" stack_reserve_size = 0x%16.16" PRIx64 "\n", 1154 header.stack_reserve_size); 1155 s->Printf(" stack_commit_size = 0x%16.16" PRIx64 "\n", 1156 header.stack_commit_size); 1157 s->Printf(" heap_reserve_size = 0x%16.16" PRIx64 "\n", 1158 header.heap_reserve_size); 1159 s->Printf(" heap_commit_size = 0x%16.16" PRIx64 "\n", 1160 header.heap_commit_size); 1161 s->Printf(" loader_flags = 0x%8.8x\n", header.loader_flags); 1162 s->Printf(" num_data_dir_entries = 0x%8.8x\n", 1163 (uint32_t)header.data_dirs.size()); 1164 uint32_t i; 1165 for (i = 0; i < header.data_dirs.size(); i++) { 1166 s->Printf(" data_dirs[%2u] vmaddr = 0x%8.8x, vmsize = 0x%8.8x\n", i, 1167 header.data_dirs[i].vmaddr, header.data_dirs[i].vmsize); 1168 } 1169 } 1170 // DumpSectionHeader 1171 // 1172 // Dump a single ELF section header to the specified output stream 1173 void ObjectFilePECOFF::DumpSectionHeader(Stream *s, 1174 const section_header_t &sh) { 1175 std::string name = GetSectionName(sh); 1176 s->Printf("%-16s 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%4.4x " 1177 "0x%4.4x 0x%8.8x\n", 1178 name.c_str(), sh.vmaddr, sh.vmsize, sh.offset, sh.size, sh.reloff, 1179 sh.lineoff, sh.nreloc, sh.nline, sh.flags); 1180 } 1181 1182 // DumpSectionHeaders 1183 // 1184 // Dump all of the ELF section header to the specified output stream 1185 void ObjectFilePECOFF::DumpSectionHeaders(Stream *s) { 1186 1187 s->PutCString("Section Headers\n"); 1188 s->PutCString("IDX name vm addr vm size file off file " 1189 "size reloc off line off nreloc nline flags\n"); 1190 s->PutCString("==== ---------------- ---------- ---------- ---------- " 1191 "---------- ---------- ---------- ------ ------ ----------\n"); 1192 1193 uint32_t idx = 0; 1194 SectionHeaderCollIter pos, end = m_sect_headers.end(); 1195 1196 for (pos = m_sect_headers.begin(); pos != end; ++pos, ++idx) { 1197 s->Printf("[%2u] ", idx); 1198 ObjectFilePECOFF::DumpSectionHeader(s, *pos); 1199 } 1200 } 1201 1202 // DumpDependentModules 1203 // 1204 // Dump all of the dependent modules to the specified output stream 1205 void ObjectFilePECOFF::DumpDependentModules(lldb_private::Stream *s) { 1206 auto num_modules = ParseDependentModules(); 1207 if (num_modules > 0) { 1208 s->PutCString("Dependent Modules\n"); 1209 for (unsigned i = 0; i < num_modules; ++i) { 1210 auto spec = m_deps_filespec->GetFileSpecAtIndex(i); 1211 s->Printf(" %s\n", spec.GetFilename().GetCString()); 1212 } 1213 } 1214 } 1215 1216 bool ObjectFilePECOFF::IsWindowsSubsystem() { 1217 switch (m_coff_header_opt.subsystem) { 1218 case llvm::COFF::IMAGE_SUBSYSTEM_NATIVE: 1219 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_GUI: 1220 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_CUI: 1221 case llvm::COFF::IMAGE_SUBSYSTEM_NATIVE_WINDOWS: 1222 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_CE_GUI: 1223 case llvm::COFF::IMAGE_SUBSYSTEM_XBOX: 1224 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_BOOT_APPLICATION: 1225 return true; 1226 default: 1227 return false; 1228 } 1229 } 1230 1231 ArchSpec ObjectFilePECOFF::GetArchitecture() { 1232 uint16_t machine = m_coff_header.machine; 1233 switch (machine) { 1234 default: 1235 break; 1236 case llvm::COFF::IMAGE_FILE_MACHINE_AMD64: 1237 case llvm::COFF::IMAGE_FILE_MACHINE_I386: 1238 case llvm::COFF::IMAGE_FILE_MACHINE_POWERPC: 1239 case llvm::COFF::IMAGE_FILE_MACHINE_POWERPCFP: 1240 case llvm::COFF::IMAGE_FILE_MACHINE_ARM: 1241 case llvm::COFF::IMAGE_FILE_MACHINE_ARMNT: 1242 case llvm::COFF::IMAGE_FILE_MACHINE_THUMB: 1243 case llvm::COFF::IMAGE_FILE_MACHINE_ARM64: 1244 ArchSpec arch; 1245 arch.SetArchitecture(eArchTypeCOFF, machine, LLDB_INVALID_CPUTYPE, 1246 IsWindowsSubsystem() ? llvm::Triple::Win32 1247 : llvm::Triple::UnknownOS); 1248 return arch; 1249 } 1250 return ArchSpec(); 1251 } 1252 1253 ObjectFile::Type ObjectFilePECOFF::CalculateType() { 1254 if (m_coff_header.machine != 0) { 1255 if ((m_coff_header.flags & llvm::COFF::IMAGE_FILE_DLL) == 0) 1256 return eTypeExecutable; 1257 else 1258 return eTypeSharedLibrary; 1259 } 1260 return eTypeExecutable; 1261 } 1262 1263 ObjectFile::Strata ObjectFilePECOFF::CalculateStrata() { return eStrataUser; } 1264 1265 // PluginInterface protocol 1266 ConstString ObjectFilePECOFF::GetPluginName() { return GetPluginNameStatic(); } 1267 1268 uint32_t ObjectFilePECOFF::GetPluginVersion() { return 1; } 1269