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, 118 lldb::offset_t file_offset, 119 lldb::offset_t length) { 120 if (!data_sp) { 121 data_sp = MapFileData(file, length, file_offset); 122 if (!data_sp) 123 return nullptr; 124 data_offset = 0; 125 } 126 127 if (!ObjectFilePECOFF::MagicBytesMatch(data_sp)) 128 return nullptr; 129 130 // Update the data to contain the entire file if it doesn't already 131 if (data_sp->GetByteSize() < length) { 132 data_sp = MapFileData(file, length, file_offset); 133 if (!data_sp) 134 return nullptr; 135 } 136 137 auto objfile_up = std::make_unique<ObjectFilePECOFF>( 138 module_sp, data_sp, data_offset, file, file_offset, length); 139 if (!objfile_up || !objfile_up->ParseHeader()) 140 return nullptr; 141 142 // Cache coff binary. 143 if (!objfile_up->CreateBinary()) 144 return nullptr; 145 146 return objfile_up.release(); 147 } 148 149 ObjectFile *ObjectFilePECOFF::CreateMemoryInstance( 150 const lldb::ModuleSP &module_sp, lldb::DataBufferSP &data_sp, 151 const lldb::ProcessSP &process_sp, lldb::addr_t header_addr) { 152 if (!data_sp || !ObjectFilePECOFF::MagicBytesMatch(data_sp)) 153 return nullptr; 154 auto objfile_up = std::make_unique<ObjectFilePECOFF>( 155 module_sp, data_sp, process_sp, header_addr); 156 if (objfile_up.get() && objfile_up->ParseHeader()) { 157 return objfile_up.release(); 158 } 159 return nullptr; 160 } 161 162 size_t ObjectFilePECOFF::GetModuleSpecifications( 163 const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp, 164 lldb::offset_t data_offset, lldb::offset_t file_offset, 165 lldb::offset_t length, lldb_private::ModuleSpecList &specs) { 166 const size_t initial_count = specs.GetSize(); 167 if (!data_sp || !ObjectFilePECOFF::MagicBytesMatch(data_sp)) 168 return initial_count; 169 170 auto binary = llvm::object::createBinary(file.GetPath()); 171 if (!binary) 172 return initial_count; 173 174 if (!binary->getBinary()->isCOFF() && 175 !binary->getBinary()->isCOFFImportFile()) 176 return initial_count; 177 178 auto COFFObj = 179 llvm::cast<llvm::object::COFFObjectFile>(binary->getBinary()); 180 181 ModuleSpec module_spec(file); 182 ArchSpec &spec = module_spec.GetArchitecture(); 183 lldb_private::UUID &uuid = module_spec.GetUUID(); 184 if (!uuid.IsValid()) 185 uuid = GetCoffUUID(COFFObj); 186 187 switch (COFFObj->getMachine()) { 188 case MachineAmd64: 189 spec.SetTriple("x86_64-pc-windows"); 190 specs.Append(module_spec); 191 break; 192 case MachineX86: 193 spec.SetTriple("i386-pc-windows"); 194 specs.Append(module_spec); 195 spec.SetTriple("i686-pc-windows"); 196 specs.Append(module_spec); 197 break; 198 case MachineArmNt: 199 spec.SetTriple("armv7-pc-windows"); 200 specs.Append(module_spec); 201 break; 202 case MachineArm64: 203 spec.SetTriple("aarch64-pc-windows"); 204 specs.Append(module_spec); 205 break; 206 default: 207 break; 208 } 209 210 return specs.GetSize() - initial_count; 211 } 212 213 bool ObjectFilePECOFF::SaveCore(const lldb::ProcessSP &process_sp, 214 const lldb_private::FileSpec &outfile, 215 lldb_private::Status &error) { 216 return SaveMiniDump(process_sp, outfile, error); 217 } 218 219 bool ObjectFilePECOFF::MagicBytesMatch(DataBufferSP &data_sp) { 220 DataExtractor data(data_sp, eByteOrderLittle, 4); 221 lldb::offset_t offset = 0; 222 uint16_t magic = data.GetU16(&offset); 223 return magic == IMAGE_DOS_SIGNATURE; 224 } 225 226 lldb::SymbolType ObjectFilePECOFF::MapSymbolType(uint16_t coff_symbol_type) { 227 // TODO: We need to complete this mapping of COFF symbol types to LLDB ones. 228 // For now, here's a hack to make sure our function have types. 229 const auto complex_type = 230 coff_symbol_type >> llvm::COFF::SCT_COMPLEX_TYPE_SHIFT; 231 if (complex_type == llvm::COFF::IMAGE_SYM_DTYPE_FUNCTION) { 232 return lldb::eSymbolTypeCode; 233 } 234 return lldb::eSymbolTypeInvalid; 235 } 236 237 bool ObjectFilePECOFF::CreateBinary() { 238 if (m_owningbin) 239 return true; 240 241 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 242 243 auto binary = llvm::object::createBinary(m_file.GetPath()); 244 if (!binary) { 245 LLDB_LOGF(log, 246 "ObjectFilePECOFF::CreateBinary() - failed to create binary " 247 "for file (%s): %s", 248 m_file ? m_file.GetPath().c_str() : "<NULL>", 249 errorToErrorCode(binary.takeError()).message().c_str()); 250 return false; 251 } 252 253 // Make sure we only handle COFF format. 254 if (!binary->getBinary()->isCOFF() && 255 !binary->getBinary()->isCOFFImportFile()) 256 return false; 257 258 m_owningbin = OWNBINType(std::move(*binary)); 259 LLDB_LOGF(log, 260 "%p ObjectFilePECOFF::CreateBinary() module = %p (%s), file = " 261 "%s, binary = %p (Bin = %p)", 262 static_cast<void *>(this), static_cast<void *>(GetModule().get()), 263 GetModule()->GetSpecificationDescription().c_str(), 264 m_file ? m_file.GetPath().c_str() : "<NULL>", 265 static_cast<void *>(m_owningbin.getPointer()), 266 static_cast<void *>(m_owningbin->getBinary())); 267 return true; 268 } 269 270 ObjectFilePECOFF::ObjectFilePECOFF(const lldb::ModuleSP &module_sp, 271 DataBufferSP &data_sp, 272 lldb::offset_t data_offset, 273 const FileSpec *file, 274 lldb::offset_t file_offset, 275 lldb::offset_t length) 276 : ObjectFile(module_sp, file, file_offset, length, data_sp, data_offset), 277 m_dos_header(), m_coff_header(), m_sect_headers(), 278 m_entry_point_address(), m_deps_filespec(), m_owningbin() { 279 ::memset(&m_dos_header, 0, sizeof(m_dos_header)); 280 ::memset(&m_coff_header, 0, sizeof(m_coff_header)); 281 } 282 283 ObjectFilePECOFF::ObjectFilePECOFF(const lldb::ModuleSP &module_sp, 284 DataBufferSP &header_data_sp, 285 const lldb::ProcessSP &process_sp, 286 addr_t header_addr) 287 : ObjectFile(module_sp, process_sp, header_addr, header_data_sp), 288 m_dos_header(), m_coff_header(), m_sect_headers(), 289 m_entry_point_address(), m_deps_filespec(), m_owningbin() { 290 ::memset(&m_dos_header, 0, sizeof(m_dos_header)); 291 ::memset(&m_coff_header, 0, sizeof(m_coff_header)); 292 } 293 294 ObjectFilePECOFF::~ObjectFilePECOFF() {} 295 296 bool ObjectFilePECOFF::ParseHeader() { 297 ModuleSP module_sp(GetModule()); 298 if (module_sp) { 299 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 300 m_sect_headers.clear(); 301 m_data.SetByteOrder(eByteOrderLittle); 302 lldb::offset_t offset = 0; 303 304 if (ParseDOSHeader(m_data, m_dos_header)) { 305 offset = m_dos_header.e_lfanew; 306 uint32_t pe_signature = m_data.GetU32(&offset); 307 if (pe_signature != IMAGE_NT_SIGNATURE) 308 return false; 309 if (ParseCOFFHeader(m_data, &offset, m_coff_header)) { 310 if (m_coff_header.hdrsize > 0) 311 ParseCOFFOptionalHeader(&offset); 312 ParseSectionHeaders(offset); 313 } 314 return true; 315 } 316 } 317 return false; 318 } 319 320 bool ObjectFilePECOFF::SetLoadAddress(Target &target, addr_t value, 321 bool value_is_offset) { 322 bool changed = false; 323 ModuleSP module_sp = GetModule(); 324 if (module_sp) { 325 size_t num_loaded_sections = 0; 326 SectionList *section_list = GetSectionList(); 327 if (section_list) { 328 if (!value_is_offset) { 329 value -= m_image_base; 330 } 331 332 const size_t num_sections = section_list->GetSize(); 333 size_t sect_idx = 0; 334 335 for (sect_idx = 0; sect_idx < num_sections; ++sect_idx) { 336 // Iterate through the object file sections to find all of the sections 337 // that have SHF_ALLOC in their flag bits. 338 SectionSP section_sp(section_list->GetSectionAtIndex(sect_idx)); 339 if (section_sp && !section_sp->IsThreadSpecific()) { 340 if (target.GetSectionLoadList().SetSectionLoadAddress( 341 section_sp, section_sp->GetFileAddress() + value)) 342 ++num_loaded_sections; 343 } 344 } 345 changed = num_loaded_sections > 0; 346 } 347 } 348 return changed; 349 } 350 351 ByteOrder ObjectFilePECOFF::GetByteOrder() const { return eByteOrderLittle; } 352 353 bool ObjectFilePECOFF::IsExecutable() const { 354 return (m_coff_header.flags & llvm::COFF::IMAGE_FILE_DLL) == 0; 355 } 356 357 uint32_t ObjectFilePECOFF::GetAddressByteSize() const { 358 if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32_PLUS) 359 return 8; 360 else if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32) 361 return 4; 362 return 4; 363 } 364 365 // NeedsEndianSwap 366 // 367 // Return true if an endian swap needs to occur when extracting data from this 368 // file. 369 bool ObjectFilePECOFF::NeedsEndianSwap() const { 370 #if defined(__LITTLE_ENDIAN__) 371 return false; 372 #else 373 return true; 374 #endif 375 } 376 // ParseDOSHeader 377 bool ObjectFilePECOFF::ParseDOSHeader(DataExtractor &data, 378 dos_header_t &dos_header) { 379 bool success = false; 380 lldb::offset_t offset = 0; 381 success = data.ValidOffsetForDataOfSize(0, sizeof(dos_header)); 382 383 if (success) { 384 dos_header.e_magic = data.GetU16(&offset); // Magic number 385 success = dos_header.e_magic == IMAGE_DOS_SIGNATURE; 386 387 if (success) { 388 dos_header.e_cblp = data.GetU16(&offset); // Bytes on last page of file 389 dos_header.e_cp = data.GetU16(&offset); // Pages in file 390 dos_header.e_crlc = data.GetU16(&offset); // Relocations 391 dos_header.e_cparhdr = 392 data.GetU16(&offset); // Size of header in paragraphs 393 dos_header.e_minalloc = 394 data.GetU16(&offset); // Minimum extra paragraphs needed 395 dos_header.e_maxalloc = 396 data.GetU16(&offset); // Maximum extra paragraphs needed 397 dos_header.e_ss = data.GetU16(&offset); // Initial (relative) SS value 398 dos_header.e_sp = data.GetU16(&offset); // Initial SP value 399 dos_header.e_csum = data.GetU16(&offset); // Checksum 400 dos_header.e_ip = data.GetU16(&offset); // Initial IP value 401 dos_header.e_cs = data.GetU16(&offset); // Initial (relative) CS value 402 dos_header.e_lfarlc = 403 data.GetU16(&offset); // File address of relocation table 404 dos_header.e_ovno = data.GetU16(&offset); // Overlay number 405 406 dos_header.e_res[0] = data.GetU16(&offset); // Reserved words 407 dos_header.e_res[1] = data.GetU16(&offset); // Reserved words 408 dos_header.e_res[2] = data.GetU16(&offset); // Reserved words 409 dos_header.e_res[3] = data.GetU16(&offset); // Reserved words 410 411 dos_header.e_oemid = 412 data.GetU16(&offset); // OEM identifier (for e_oeminfo) 413 dos_header.e_oeminfo = 414 data.GetU16(&offset); // OEM information; e_oemid specific 415 dos_header.e_res2[0] = data.GetU16(&offset); // Reserved words 416 dos_header.e_res2[1] = data.GetU16(&offset); // Reserved words 417 dos_header.e_res2[2] = data.GetU16(&offset); // Reserved words 418 dos_header.e_res2[3] = data.GetU16(&offset); // Reserved words 419 dos_header.e_res2[4] = data.GetU16(&offset); // Reserved words 420 dos_header.e_res2[5] = data.GetU16(&offset); // Reserved words 421 dos_header.e_res2[6] = data.GetU16(&offset); // Reserved words 422 dos_header.e_res2[7] = data.GetU16(&offset); // Reserved words 423 dos_header.e_res2[8] = data.GetU16(&offset); // Reserved words 424 dos_header.e_res2[9] = data.GetU16(&offset); // Reserved words 425 426 dos_header.e_lfanew = 427 data.GetU32(&offset); // File address of new exe header 428 } 429 } 430 if (!success) 431 memset(&dos_header, 0, sizeof(dos_header)); 432 return success; 433 } 434 435 // ParserCOFFHeader 436 bool ObjectFilePECOFF::ParseCOFFHeader(DataExtractor &data, 437 lldb::offset_t *offset_ptr, 438 coff_header_t &coff_header) { 439 bool success = 440 data.ValidOffsetForDataOfSize(*offset_ptr, sizeof(coff_header)); 441 if (success) { 442 coff_header.machine = data.GetU16(offset_ptr); 443 coff_header.nsects = data.GetU16(offset_ptr); 444 coff_header.modtime = data.GetU32(offset_ptr); 445 coff_header.symoff = data.GetU32(offset_ptr); 446 coff_header.nsyms = data.GetU32(offset_ptr); 447 coff_header.hdrsize = data.GetU16(offset_ptr); 448 coff_header.flags = data.GetU16(offset_ptr); 449 } 450 if (!success) 451 memset(&coff_header, 0, sizeof(coff_header)); 452 return success; 453 } 454 455 bool ObjectFilePECOFF::ParseCOFFOptionalHeader(lldb::offset_t *offset_ptr) { 456 bool success = false; 457 const lldb::offset_t end_offset = *offset_ptr + m_coff_header.hdrsize; 458 if (*offset_ptr < end_offset) { 459 success = true; 460 m_coff_header_opt.magic = m_data.GetU16(offset_ptr); 461 m_coff_header_opt.major_linker_version = m_data.GetU8(offset_ptr); 462 m_coff_header_opt.minor_linker_version = m_data.GetU8(offset_ptr); 463 m_coff_header_opt.code_size = m_data.GetU32(offset_ptr); 464 m_coff_header_opt.data_size = m_data.GetU32(offset_ptr); 465 m_coff_header_opt.bss_size = m_data.GetU32(offset_ptr); 466 m_coff_header_opt.entry = m_data.GetU32(offset_ptr); 467 m_coff_header_opt.code_offset = m_data.GetU32(offset_ptr); 468 469 const uint32_t addr_byte_size = GetAddressByteSize(); 470 471 if (*offset_ptr < end_offset) { 472 if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32) { 473 // PE32 only 474 m_coff_header_opt.data_offset = m_data.GetU32(offset_ptr); 475 } else 476 m_coff_header_opt.data_offset = 0; 477 478 if (*offset_ptr < end_offset) { 479 m_coff_header_opt.image_base = 480 m_data.GetMaxU64(offset_ptr, addr_byte_size); 481 m_coff_header_opt.sect_alignment = m_data.GetU32(offset_ptr); 482 m_coff_header_opt.file_alignment = m_data.GetU32(offset_ptr); 483 m_coff_header_opt.major_os_system_version = m_data.GetU16(offset_ptr); 484 m_coff_header_opt.minor_os_system_version = m_data.GetU16(offset_ptr); 485 m_coff_header_opt.major_image_version = m_data.GetU16(offset_ptr); 486 m_coff_header_opt.minor_image_version = m_data.GetU16(offset_ptr); 487 m_coff_header_opt.major_subsystem_version = m_data.GetU16(offset_ptr); 488 m_coff_header_opt.minor_subsystem_version = m_data.GetU16(offset_ptr); 489 m_coff_header_opt.reserved1 = m_data.GetU32(offset_ptr); 490 m_coff_header_opt.image_size = m_data.GetU32(offset_ptr); 491 m_coff_header_opt.header_size = m_data.GetU32(offset_ptr); 492 m_coff_header_opt.checksum = m_data.GetU32(offset_ptr); 493 m_coff_header_opt.subsystem = m_data.GetU16(offset_ptr); 494 m_coff_header_opt.dll_flags = m_data.GetU16(offset_ptr); 495 m_coff_header_opt.stack_reserve_size = 496 m_data.GetMaxU64(offset_ptr, addr_byte_size); 497 m_coff_header_opt.stack_commit_size = 498 m_data.GetMaxU64(offset_ptr, addr_byte_size); 499 m_coff_header_opt.heap_reserve_size = 500 m_data.GetMaxU64(offset_ptr, addr_byte_size); 501 m_coff_header_opt.heap_commit_size = 502 m_data.GetMaxU64(offset_ptr, addr_byte_size); 503 m_coff_header_opt.loader_flags = m_data.GetU32(offset_ptr); 504 uint32_t num_data_dir_entries = m_data.GetU32(offset_ptr); 505 m_coff_header_opt.data_dirs.clear(); 506 m_coff_header_opt.data_dirs.resize(num_data_dir_entries); 507 uint32_t i; 508 for (i = 0; i < num_data_dir_entries; i++) { 509 m_coff_header_opt.data_dirs[i].vmaddr = m_data.GetU32(offset_ptr); 510 m_coff_header_opt.data_dirs[i].vmsize = m_data.GetU32(offset_ptr); 511 } 512 513 m_image_base = m_coff_header_opt.image_base; 514 } 515 } 516 } 517 // Make sure we are on track for section data which follows 518 *offset_ptr = end_offset; 519 return success; 520 } 521 522 uint32_t ObjectFilePECOFF::GetRVA(const Address &addr) const { 523 return addr.GetFileAddress() - m_image_base; 524 } 525 526 Address ObjectFilePECOFF::GetAddress(uint32_t rva) { 527 SectionList *sect_list = GetSectionList(); 528 if (!sect_list) 529 return Address(GetFileAddress(rva)); 530 531 return Address(GetFileAddress(rva), sect_list); 532 } 533 534 lldb::addr_t ObjectFilePECOFF::GetFileAddress(uint32_t rva) const { 535 return m_image_base + rva; 536 } 537 538 DataExtractor ObjectFilePECOFF::ReadImageData(uint32_t offset, size_t size) { 539 if (!size) 540 return {}; 541 542 if (m_file) { 543 // A bit of a hack, but we intend to write to this buffer, so we can't 544 // mmap it. 545 auto buffer_sp = MapFileData(m_file, size, offset); 546 return DataExtractor(buffer_sp, GetByteOrder(), GetAddressByteSize()); 547 } 548 ProcessSP process_sp(m_process_wp.lock()); 549 DataExtractor data; 550 if (process_sp) { 551 auto data_up = std::make_unique<DataBufferHeap>(size, 0); 552 Status readmem_error; 553 size_t bytes_read = 554 process_sp->ReadMemory(m_image_base + offset, data_up->GetBytes(), 555 data_up->GetByteSize(), readmem_error); 556 if (bytes_read == size) { 557 DataBufferSP buffer_sp(data_up.release()); 558 data.SetData(buffer_sp, 0, buffer_sp->GetByteSize()); 559 } 560 } 561 return data; 562 } 563 564 DataExtractor ObjectFilePECOFF::ReadImageDataByRVA(uint32_t rva, size_t size) { 565 if (m_file) { 566 Address addr = GetAddress(rva); 567 rva = addr.GetSection()->GetFileOffset() + addr.GetOffset(); 568 } 569 570 return ReadImageData(rva, size); 571 } 572 573 // ParseSectionHeaders 574 bool ObjectFilePECOFF::ParseSectionHeaders( 575 uint32_t section_header_data_offset) { 576 const uint32_t nsects = m_coff_header.nsects; 577 m_sect_headers.clear(); 578 579 if (nsects > 0) { 580 const size_t section_header_byte_size = nsects * sizeof(section_header_t); 581 DataExtractor section_header_data = 582 ReadImageData(section_header_data_offset, section_header_byte_size); 583 584 lldb::offset_t offset = 0; 585 if (section_header_data.ValidOffsetForDataOfSize( 586 offset, section_header_byte_size)) { 587 m_sect_headers.resize(nsects); 588 589 for (uint32_t idx = 0; idx < nsects; ++idx) { 590 const void *name_data = section_header_data.GetData(&offset, 8); 591 if (name_data) { 592 memcpy(m_sect_headers[idx].name, name_data, 8); 593 m_sect_headers[idx].vmsize = section_header_data.GetU32(&offset); 594 m_sect_headers[idx].vmaddr = section_header_data.GetU32(&offset); 595 m_sect_headers[idx].size = section_header_data.GetU32(&offset); 596 m_sect_headers[idx].offset = section_header_data.GetU32(&offset); 597 m_sect_headers[idx].reloff = section_header_data.GetU32(&offset); 598 m_sect_headers[idx].lineoff = section_header_data.GetU32(&offset); 599 m_sect_headers[idx].nreloc = section_header_data.GetU16(&offset); 600 m_sect_headers[idx].nline = section_header_data.GetU16(&offset); 601 m_sect_headers[idx].flags = section_header_data.GetU32(&offset); 602 } 603 } 604 } 605 } 606 607 return !m_sect_headers.empty(); 608 } 609 610 llvm::StringRef ObjectFilePECOFF::GetSectionName(const section_header_t §) { 611 llvm::StringRef hdr_name(sect.name, llvm::array_lengthof(sect.name)); 612 hdr_name = hdr_name.split('\0').first; 613 if (hdr_name.consume_front("/")) { 614 lldb::offset_t stroff; 615 if (!to_integer(hdr_name, stroff, 10)) 616 return ""; 617 lldb::offset_t string_file_offset = 618 m_coff_header.symoff + (m_coff_header.nsyms * 18) + stroff; 619 if (const char *name = m_data.GetCStr(&string_file_offset)) 620 return name; 621 return ""; 622 } 623 return hdr_name; 624 } 625 626 // GetNListSymtab 627 Symtab *ObjectFilePECOFF::GetSymtab() { 628 ModuleSP module_sp(GetModule()); 629 if (module_sp) { 630 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 631 if (m_symtab_up == nullptr) { 632 SectionList *sect_list = GetSectionList(); 633 m_symtab_up.reset(new Symtab(this)); 634 std::lock_guard<std::recursive_mutex> guard(m_symtab_up->GetMutex()); 635 636 const uint32_t num_syms = m_coff_header.nsyms; 637 638 if (m_file && num_syms > 0 && m_coff_header.symoff > 0) { 639 const uint32_t symbol_size = 18; 640 const size_t symbol_data_size = num_syms * symbol_size; 641 // Include the 4-byte string table size at the end of the symbols 642 DataExtractor symtab_data = 643 ReadImageData(m_coff_header.symoff, symbol_data_size + 4); 644 lldb::offset_t offset = symbol_data_size; 645 const uint32_t strtab_size = symtab_data.GetU32(&offset); 646 if (strtab_size > 0) { 647 DataExtractor strtab_data = ReadImageData( 648 m_coff_header.symoff + symbol_data_size, strtab_size); 649 650 // First 4 bytes should be zeroed after strtab_size has been read, 651 // because it is used as offset 0 to encode a NULL string. 652 uint32_t *strtab_data_start = const_cast<uint32_t *>( 653 reinterpret_cast<const uint32_t *>(strtab_data.GetDataStart())); 654 strtab_data_start[0] = 0; 655 656 offset = 0; 657 std::string symbol_name; 658 Symbol *symbols = m_symtab_up->Resize(num_syms); 659 for (uint32_t i = 0; i < num_syms; ++i) { 660 coff_symbol_t symbol; 661 const uint32_t symbol_offset = offset; 662 const char *symbol_name_cstr = nullptr; 663 // If the first 4 bytes of the symbol string are zero, then they 664 // are followed by a 4-byte string table offset. Else these 665 // 8 bytes contain the symbol name 666 if (symtab_data.GetU32(&offset) == 0) { 667 // Long string that doesn't fit into the symbol table name, so 668 // now we must read the 4 byte string table offset 669 uint32_t strtab_offset = symtab_data.GetU32(&offset); 670 symbol_name_cstr = strtab_data.PeekCStr(strtab_offset); 671 symbol_name.assign(symbol_name_cstr); 672 } else { 673 // Short string that fits into the symbol table name which is 8 674 // bytes 675 offset += sizeof(symbol.name) - 4; // Skip remaining 676 symbol_name_cstr = symtab_data.PeekCStr(symbol_offset); 677 if (symbol_name_cstr == nullptr) 678 break; 679 symbol_name.assign(symbol_name_cstr, sizeof(symbol.name)); 680 } 681 symbol.value = symtab_data.GetU32(&offset); 682 symbol.sect = symtab_data.GetU16(&offset); 683 symbol.type = symtab_data.GetU16(&offset); 684 symbol.storage = symtab_data.GetU8(&offset); 685 symbol.naux = symtab_data.GetU8(&offset); 686 symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); 687 if ((int16_t)symbol.sect >= 1) { 688 Address symbol_addr(sect_list->GetSectionAtIndex(symbol.sect - 1), 689 symbol.value); 690 symbols[i].GetAddressRef() = symbol_addr; 691 symbols[i].SetType(MapSymbolType(symbol.type)); 692 } 693 694 if (symbol.naux > 0) { 695 i += symbol.naux; 696 offset += symbol_size; 697 } 698 } 699 } 700 } 701 702 // Read export header 703 if (coff_data_dir_export_table < m_coff_header_opt.data_dirs.size() && 704 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmsize > 0 && 705 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr > 0) { 706 export_directory_entry export_table; 707 uint32_t data_start = 708 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr; 709 710 DataExtractor symtab_data = ReadImageDataByRVA( 711 data_start, m_coff_header_opt.data_dirs[0].vmsize); 712 lldb::offset_t offset = 0; 713 714 // Read export_table header 715 export_table.characteristics = symtab_data.GetU32(&offset); 716 export_table.time_date_stamp = symtab_data.GetU32(&offset); 717 export_table.major_version = symtab_data.GetU16(&offset); 718 export_table.minor_version = symtab_data.GetU16(&offset); 719 export_table.name = symtab_data.GetU32(&offset); 720 export_table.base = symtab_data.GetU32(&offset); 721 export_table.number_of_functions = symtab_data.GetU32(&offset); 722 export_table.number_of_names = symtab_data.GetU32(&offset); 723 export_table.address_of_functions = symtab_data.GetU32(&offset); 724 export_table.address_of_names = symtab_data.GetU32(&offset); 725 export_table.address_of_name_ordinals = symtab_data.GetU32(&offset); 726 727 bool has_ordinal = export_table.address_of_name_ordinals != 0; 728 729 lldb::offset_t name_offset = export_table.address_of_names - data_start; 730 lldb::offset_t name_ordinal_offset = 731 export_table.address_of_name_ordinals - data_start; 732 733 Symbol *symbols = m_symtab_up->Resize(export_table.number_of_names); 734 735 std::string symbol_name; 736 737 // Read each export table entry 738 for (size_t i = 0; i < export_table.number_of_names; ++i) { 739 uint32_t name_ordinal = 740 has_ordinal ? symtab_data.GetU16(&name_ordinal_offset) : i; 741 uint32_t name_address = symtab_data.GetU32(&name_offset); 742 743 const char *symbol_name_cstr = 744 symtab_data.PeekCStr(name_address - data_start); 745 symbol_name.assign(symbol_name_cstr); 746 747 lldb::offset_t function_offset = export_table.address_of_functions - 748 data_start + 749 sizeof(uint32_t) * name_ordinal; 750 uint32_t function_rva = symtab_data.GetU32(&function_offset); 751 752 Address symbol_addr(m_coff_header_opt.image_base + function_rva, 753 sect_list); 754 symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); 755 symbols[i].GetAddressRef() = symbol_addr; 756 symbols[i].SetType(lldb::eSymbolTypeCode); 757 symbols[i].SetDebug(true); 758 } 759 } 760 m_symtab_up->CalculateSymbolSizes(); 761 } 762 } 763 return m_symtab_up.get(); 764 } 765 766 std::unique_ptr<CallFrameInfo> ObjectFilePECOFF::CreateCallFrameInfo() { 767 if (coff_data_dir_exception_table >= m_coff_header_opt.data_dirs.size()) 768 return {}; 769 770 data_directory data_dir_exception = 771 m_coff_header_opt.data_dirs[coff_data_dir_exception_table]; 772 if (!data_dir_exception.vmaddr) 773 return {}; 774 775 return std::make_unique<PECallFrameInfo>(*this, data_dir_exception.vmaddr, 776 data_dir_exception.vmsize); 777 } 778 779 bool ObjectFilePECOFF::IsStripped() { 780 // TODO: determine this for COFF 781 return false; 782 } 783 784 void ObjectFilePECOFF::CreateSections(SectionList &unified_section_list) { 785 if (m_sections_up) 786 return; 787 m_sections_up.reset(new SectionList()); 788 789 ModuleSP module_sp(GetModule()); 790 if (module_sp) { 791 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 792 793 SectionSP image_sp = std::make_shared<Section>( 794 module_sp, this, ~user_id_t(0), ConstString(), eSectionTypeContainer, 795 m_coff_header_opt.image_base, m_coff_header_opt.image_size, 796 /*file_offset*/ 0, /*file_size*/ 0, m_coff_header_opt.sect_alignment, 797 /*flags*/ 0); 798 m_sections_up->AddSection(image_sp); 799 unified_section_list.AddSection(image_sp); 800 801 const uint32_t nsects = m_sect_headers.size(); 802 ModuleSP module_sp(GetModule()); 803 for (uint32_t idx = 0; idx < nsects; ++idx) { 804 ConstString const_sect_name(GetSectionName(m_sect_headers[idx])); 805 static ConstString g_code_sect_name(".code"); 806 static ConstString g_CODE_sect_name("CODE"); 807 static ConstString g_data_sect_name(".data"); 808 static ConstString g_DATA_sect_name("DATA"); 809 static ConstString g_bss_sect_name(".bss"); 810 static ConstString g_BSS_sect_name("BSS"); 811 static ConstString g_debug_sect_name(".debug"); 812 static ConstString g_reloc_sect_name(".reloc"); 813 static ConstString g_stab_sect_name(".stab"); 814 static ConstString g_stabstr_sect_name(".stabstr"); 815 static ConstString g_sect_name_dwarf_debug_abbrev(".debug_abbrev"); 816 static ConstString g_sect_name_dwarf_debug_aranges(".debug_aranges"); 817 static ConstString g_sect_name_dwarf_debug_frame(".debug_frame"); 818 static ConstString g_sect_name_dwarf_debug_info(".debug_info"); 819 static ConstString g_sect_name_dwarf_debug_line(".debug_line"); 820 static ConstString g_sect_name_dwarf_debug_loc(".debug_loc"); 821 static ConstString g_sect_name_dwarf_debug_loclists(".debug_loclists"); 822 static ConstString g_sect_name_dwarf_debug_macinfo(".debug_macinfo"); 823 static ConstString g_sect_name_dwarf_debug_names(".debug_names"); 824 static ConstString g_sect_name_dwarf_debug_pubnames(".debug_pubnames"); 825 static ConstString g_sect_name_dwarf_debug_pubtypes(".debug_pubtypes"); 826 static ConstString g_sect_name_dwarf_debug_ranges(".debug_ranges"); 827 static ConstString g_sect_name_dwarf_debug_str(".debug_str"); 828 static ConstString g_sect_name_dwarf_debug_types(".debug_types"); 829 static ConstString g_sect_name_eh_frame(".eh_frame"); 830 static ConstString g_sect_name_go_symtab(".gosymtab"); 831 SectionType section_type = eSectionTypeOther; 832 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_CNT_CODE && 833 ((const_sect_name == g_code_sect_name) || 834 (const_sect_name == g_CODE_sect_name))) { 835 section_type = eSectionTypeCode; 836 } else if (m_sect_headers[idx].flags & 837 llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA && 838 ((const_sect_name == g_data_sect_name) || 839 (const_sect_name == g_DATA_sect_name))) { 840 if (m_sect_headers[idx].size == 0 && m_sect_headers[idx].offset == 0) 841 section_type = eSectionTypeZeroFill; 842 else 843 section_type = eSectionTypeData; 844 } else if (m_sect_headers[idx].flags & 845 llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA && 846 ((const_sect_name == g_bss_sect_name) || 847 (const_sect_name == g_BSS_sect_name))) { 848 if (m_sect_headers[idx].size == 0) 849 section_type = eSectionTypeZeroFill; 850 else 851 section_type = eSectionTypeData; 852 } else if (const_sect_name == g_debug_sect_name) { 853 section_type = eSectionTypeDebug; 854 } else if (const_sect_name == g_stabstr_sect_name) { 855 section_type = eSectionTypeDataCString; 856 } else if (const_sect_name == g_reloc_sect_name) { 857 section_type = eSectionTypeOther; 858 } else if (const_sect_name == g_sect_name_dwarf_debug_abbrev) 859 section_type = eSectionTypeDWARFDebugAbbrev; 860 else if (const_sect_name == g_sect_name_dwarf_debug_aranges) 861 section_type = eSectionTypeDWARFDebugAranges; 862 else if (const_sect_name == g_sect_name_dwarf_debug_frame) 863 section_type = eSectionTypeDWARFDebugFrame; 864 else if (const_sect_name == g_sect_name_dwarf_debug_info) 865 section_type = eSectionTypeDWARFDebugInfo; 866 else if (const_sect_name == g_sect_name_dwarf_debug_line) 867 section_type = eSectionTypeDWARFDebugLine; 868 else if (const_sect_name == g_sect_name_dwarf_debug_loc) 869 section_type = eSectionTypeDWARFDebugLoc; 870 else if (const_sect_name == g_sect_name_dwarf_debug_loclists) 871 section_type = eSectionTypeDWARFDebugLocLists; 872 else if (const_sect_name == g_sect_name_dwarf_debug_macinfo) 873 section_type = eSectionTypeDWARFDebugMacInfo; 874 else if (const_sect_name == g_sect_name_dwarf_debug_names) 875 section_type = eSectionTypeDWARFDebugNames; 876 else if (const_sect_name == g_sect_name_dwarf_debug_pubnames) 877 section_type = eSectionTypeDWARFDebugPubNames; 878 else if (const_sect_name == g_sect_name_dwarf_debug_pubtypes) 879 section_type = eSectionTypeDWARFDebugPubTypes; 880 else if (const_sect_name == g_sect_name_dwarf_debug_ranges) 881 section_type = eSectionTypeDWARFDebugRanges; 882 else if (const_sect_name == g_sect_name_dwarf_debug_str) 883 section_type = eSectionTypeDWARFDebugStr; 884 else if (const_sect_name == g_sect_name_dwarf_debug_types) 885 section_type = eSectionTypeDWARFDebugTypes; 886 else if (const_sect_name == g_sect_name_eh_frame) 887 section_type = eSectionTypeEHFrame; 888 else if (const_sect_name == g_sect_name_go_symtab) 889 section_type = eSectionTypeGoSymtab; 890 else if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_CNT_CODE) { 891 section_type = eSectionTypeCode; 892 } else if (m_sect_headers[idx].flags & 893 llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA) { 894 section_type = eSectionTypeData; 895 } else if (m_sect_headers[idx].flags & 896 llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA) { 897 if (m_sect_headers[idx].size == 0) 898 section_type = eSectionTypeZeroFill; 899 else 900 section_type = eSectionTypeData; 901 } 902 903 SectionSP section_sp(new Section( 904 image_sp, // Parent section 905 module_sp, // Module to which this section belongs 906 this, // Object file to which this section belongs 907 idx + 1, // Section ID is the 1 based section index. 908 const_sect_name, // Name of this section 909 section_type, 910 m_sect_headers[idx].vmaddr, // File VM address == addresses as 911 // they are found in the object file 912 m_sect_headers[idx].vmsize, // VM size in bytes of this section 913 m_sect_headers[idx] 914 .offset, // Offset to the data for this section in the file 915 m_sect_headers[idx] 916 .size, // Size in bytes of this section as found in the file 917 m_coff_header_opt.sect_alignment, // Section alignment 918 m_sect_headers[idx].flags)); // Flags for this section 919 920 image_sp->GetChildren().AddSection(std::move(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