1 //===-- ObjectFilePECOFF.cpp ----------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "ObjectFilePECOFF.h" 10 #include "PECallFrameInfo.h" 11 #include "WindowsMiniDump.h" 12 13 #include "lldb/Core/FileSpecList.h" 14 #include "lldb/Core/Module.h" 15 #include "lldb/Core/ModuleSpec.h" 16 #include "lldb/Core/PluginManager.h" 17 #include "lldb/Core/Section.h" 18 #include "lldb/Core/StreamFile.h" 19 #include "lldb/Symbol/ObjectFile.h" 20 #include "lldb/Target/Process.h" 21 #include "lldb/Target/SectionLoadList.h" 22 #include "lldb/Target/Target.h" 23 #include "lldb/Utility/ArchSpec.h" 24 #include "lldb/Utility/DataBufferHeap.h" 25 #include "lldb/Utility/FileSpec.h" 26 #include "lldb/Utility/Log.h" 27 #include "lldb/Utility/StreamString.h" 28 #include "lldb/Utility/Timer.h" 29 #include "lldb/Utility/UUID.h" 30 #include "llvm/BinaryFormat/COFF.h" 31 32 #include "llvm/Object/COFFImportFile.h" 33 #include "llvm/Support/Error.h" 34 #include "llvm/Support/MemoryBuffer.h" 35 36 #define IMAGE_DOS_SIGNATURE 0x5A4D // MZ 37 #define IMAGE_NT_SIGNATURE 0x00004550 // PE00 38 #define OPT_HEADER_MAGIC_PE32 0x010b 39 #define OPT_HEADER_MAGIC_PE32_PLUS 0x020b 40 41 using namespace lldb; 42 using namespace lldb_private; 43 44 LLDB_PLUGIN_DEFINE(ObjectFilePECOFF) 45 46 struct CVInfoPdb70 { 47 // 16-byte GUID 48 struct _Guid { 49 llvm::support::ulittle32_t Data1; 50 llvm::support::ulittle16_t Data2; 51 llvm::support::ulittle16_t Data3; 52 uint8_t Data4[8]; 53 } Guid; 54 55 llvm::support::ulittle32_t Age; 56 }; 57 58 static UUID GetCoffUUID(llvm::object::COFFObjectFile *coff_obj) { 59 if (!coff_obj) 60 return UUID(); 61 62 const llvm::codeview::DebugInfo *pdb_info = nullptr; 63 llvm::StringRef pdb_file; 64 65 // This part is similar with what has done in minidump parser. 66 if (!coff_obj->getDebugPDBInfo(pdb_info, pdb_file) && pdb_info) { 67 if (pdb_info->PDB70.CVSignature == llvm::OMF::Signature::PDB70) { 68 using llvm::support::endian::read16be; 69 using llvm::support::endian::read32be; 70 71 const uint8_t *sig = pdb_info->PDB70.Signature; 72 struct CVInfoPdb70 info; 73 info.Guid.Data1 = read32be(sig); 74 sig += 4; 75 info.Guid.Data2 = read16be(sig); 76 sig += 2; 77 info.Guid.Data3 = read16be(sig); 78 sig += 2; 79 memcpy(info.Guid.Data4, sig, 8); 80 81 // Return 20-byte UUID if the Age is not zero 82 if (pdb_info->PDB70.Age) { 83 info.Age = read32be(&pdb_info->PDB70.Age); 84 return UUID::fromOptionalData(&info, sizeof(info)); 85 } 86 // Otherwise return 16-byte GUID 87 return UUID::fromOptionalData(&info.Guid, sizeof(info.Guid)); 88 } 89 } 90 91 return UUID(); 92 } 93 94 char ObjectFilePECOFF::ID; 95 96 void ObjectFilePECOFF::Initialize() { 97 PluginManager::RegisterPlugin( 98 GetPluginNameStatic(), GetPluginDescriptionStatic(), CreateInstance, 99 CreateMemoryInstance, GetModuleSpecifications, SaveCore); 100 } 101 102 void ObjectFilePECOFF::Terminate() { 103 PluginManager::UnregisterPlugin(CreateInstance); 104 } 105 106 lldb_private::ConstString ObjectFilePECOFF::GetPluginNameStatic() { 107 static ConstString g_name("pe-coff"); 108 return g_name; 109 } 110 111 const char *ObjectFilePECOFF::GetPluginDescriptionStatic() { 112 return "Portable Executable and Common Object File Format object file reader " 113 "(32 and 64 bit)"; 114 } 115 116 ObjectFile *ObjectFilePECOFF::CreateInstance(const lldb::ModuleSP &module_sp, 117 DataBufferSP &data_sp, 118 lldb::offset_t data_offset, 119 const lldb_private::FileSpec *file_p, 120 lldb::offset_t file_offset, 121 lldb::offset_t length) { 122 FileSpec file = file_p ? *file_p : FileSpec(); 123 if (!data_sp) { 124 data_sp = MapFileData(file, length, file_offset); 125 if (!data_sp) 126 return nullptr; 127 data_offset = 0; 128 } 129 130 if (!ObjectFilePECOFF::MagicBytesMatch(data_sp)) 131 return nullptr; 132 133 // Update the data to contain the entire file if it doesn't already 134 if (data_sp->GetByteSize() < length) { 135 data_sp = MapFileData(file, length, file_offset); 136 if (!data_sp) 137 return nullptr; 138 } 139 140 auto objfile_up = std::make_unique<ObjectFilePECOFF>( 141 module_sp, data_sp, data_offset, file_p, file_offset, length); 142 if (!objfile_up || !objfile_up->ParseHeader()) 143 return nullptr; 144 145 // Cache coff binary. 146 if (!objfile_up->CreateBinary()) 147 return nullptr; 148 149 return objfile_up.release(); 150 } 151 152 ObjectFile *ObjectFilePECOFF::CreateMemoryInstance( 153 const lldb::ModuleSP &module_sp, lldb::DataBufferSP &data_sp, 154 const lldb::ProcessSP &process_sp, lldb::addr_t header_addr) { 155 if (!data_sp || !ObjectFilePECOFF::MagicBytesMatch(data_sp)) 156 return nullptr; 157 auto objfile_up = std::make_unique<ObjectFilePECOFF>( 158 module_sp, data_sp, process_sp, header_addr); 159 if (objfile_up.get() && objfile_up->ParseHeader()) { 160 return objfile_up.release(); 161 } 162 return nullptr; 163 } 164 165 size_t ObjectFilePECOFF::GetModuleSpecifications( 166 const lldb_private::FileSpec &file, lldb::DataBufferSP &data_sp, 167 lldb::offset_t data_offset, lldb::offset_t file_offset, 168 lldb::offset_t length, lldb_private::ModuleSpecList &specs) { 169 const size_t initial_count = specs.GetSize(); 170 if (!data_sp || !ObjectFilePECOFF::MagicBytesMatch(data_sp)) 171 return initial_count; 172 173 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 174 175 auto binary = llvm::object::createBinary(file.GetPath()); 176 177 if (!binary) { 178 LLDB_LOG_ERROR(log, binary.takeError(), 179 "Failed to create binary for file ({1}): {0}", file); 180 return initial_count; 181 } 182 183 if (!binary->getBinary()->isCOFF() && 184 !binary->getBinary()->isCOFFImportFile()) 185 return initial_count; 186 187 auto COFFObj = 188 llvm::cast<llvm::object::COFFObjectFile>(binary->getBinary()); 189 190 ModuleSpec module_spec(file); 191 ArchSpec &spec = module_spec.GetArchitecture(); 192 lldb_private::UUID &uuid = module_spec.GetUUID(); 193 if (!uuid.IsValid()) 194 uuid = GetCoffUUID(COFFObj); 195 196 switch (COFFObj->getMachine()) { 197 case MachineAmd64: 198 spec.SetTriple("x86_64-pc-windows"); 199 specs.Append(module_spec); 200 break; 201 case MachineX86: 202 spec.SetTriple("i386-pc-windows"); 203 specs.Append(module_spec); 204 spec.SetTriple("i686-pc-windows"); 205 specs.Append(module_spec); 206 break; 207 case MachineArmNt: 208 spec.SetTriple("armv7-pc-windows"); 209 specs.Append(module_spec); 210 break; 211 case MachineArm64: 212 spec.SetTriple("aarch64-pc-windows"); 213 specs.Append(module_spec); 214 break; 215 default: 216 break; 217 } 218 219 return specs.GetSize() - initial_count; 220 } 221 222 bool ObjectFilePECOFF::SaveCore(const lldb::ProcessSP &process_sp, 223 const lldb_private::FileSpec &outfile, 224 lldb_private::Status &error) { 225 return SaveMiniDump(process_sp, outfile, error); 226 } 227 228 bool ObjectFilePECOFF::MagicBytesMatch(DataBufferSP &data_sp) { 229 DataExtractor data(data_sp, eByteOrderLittle, 4); 230 lldb::offset_t offset = 0; 231 uint16_t magic = data.GetU16(&offset); 232 return magic == IMAGE_DOS_SIGNATURE; 233 } 234 235 lldb::SymbolType ObjectFilePECOFF::MapSymbolType(uint16_t coff_symbol_type) { 236 // TODO: We need to complete this mapping of COFF symbol types to LLDB ones. 237 // For now, here's a hack to make sure our function have types. 238 const auto complex_type = 239 coff_symbol_type >> llvm::COFF::SCT_COMPLEX_TYPE_SHIFT; 240 if (complex_type == llvm::COFF::IMAGE_SYM_DTYPE_FUNCTION) { 241 return lldb::eSymbolTypeCode; 242 } 243 return lldb::eSymbolTypeInvalid; 244 } 245 246 bool ObjectFilePECOFF::CreateBinary() { 247 if (m_owningbin) 248 return true; 249 250 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 251 252 auto binary = llvm::object::createBinary(m_file.GetPath()); 253 if (!binary) { 254 LLDB_LOG_ERROR(log, binary.takeError(), 255 "Failed to create binary for file ({1}): {0}", m_file); 256 return false; 257 } 258 259 // Make sure we only handle COFF format. 260 if (!binary->getBinary()->isCOFF() && 261 !binary->getBinary()->isCOFFImportFile()) 262 return false; 263 264 m_owningbin = OWNBINType(std::move(*binary)); 265 LLDB_LOGF(log, 266 "%p ObjectFilePECOFF::CreateBinary() module = %p (%s), file = " 267 "%s, binary = %p (Bin = %p)", 268 static_cast<void *>(this), static_cast<void *>(GetModule().get()), 269 GetModule()->GetSpecificationDescription().c_str(), 270 m_file ? m_file.GetPath().c_str() : "<NULL>", 271 static_cast<void *>(m_owningbin.getPointer()), 272 static_cast<void *>(m_owningbin->getBinary())); 273 return true; 274 } 275 276 ObjectFilePECOFF::ObjectFilePECOFF(const lldb::ModuleSP &module_sp, 277 DataBufferSP &data_sp, 278 lldb::offset_t data_offset, 279 const FileSpec *file, 280 lldb::offset_t file_offset, 281 lldb::offset_t length) 282 : ObjectFile(module_sp, file, file_offset, length, data_sp, data_offset), 283 m_dos_header(), m_coff_header(), m_sect_headers(), 284 m_entry_point_address(), m_deps_filespec(), m_owningbin() { 285 ::memset(&m_dos_header, 0, sizeof(m_dos_header)); 286 ::memset(&m_coff_header, 0, sizeof(m_coff_header)); 287 } 288 289 ObjectFilePECOFF::ObjectFilePECOFF(const lldb::ModuleSP &module_sp, 290 DataBufferSP &header_data_sp, 291 const lldb::ProcessSP &process_sp, 292 addr_t header_addr) 293 : ObjectFile(module_sp, process_sp, header_addr, header_data_sp), 294 m_dos_header(), m_coff_header(), m_sect_headers(), 295 m_entry_point_address(), m_deps_filespec(), m_owningbin() { 296 ::memset(&m_dos_header, 0, sizeof(m_dos_header)); 297 ::memset(&m_coff_header, 0, sizeof(m_coff_header)); 298 } 299 300 ObjectFilePECOFF::~ObjectFilePECOFF() {} 301 302 bool ObjectFilePECOFF::ParseHeader() { 303 ModuleSP module_sp(GetModule()); 304 if (module_sp) { 305 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 306 m_sect_headers.clear(); 307 m_data.SetByteOrder(eByteOrderLittle); 308 lldb::offset_t offset = 0; 309 310 if (ParseDOSHeader(m_data, m_dos_header)) { 311 offset = m_dos_header.e_lfanew; 312 uint32_t pe_signature = m_data.GetU32(&offset); 313 if (pe_signature != IMAGE_NT_SIGNATURE) 314 return false; 315 if (ParseCOFFHeader(m_data, &offset, m_coff_header)) { 316 if (m_coff_header.hdrsize > 0) 317 ParseCOFFOptionalHeader(&offset); 318 ParseSectionHeaders(offset); 319 } 320 m_data.SetAddressByteSize(GetAddressByteSize()); 321 return true; 322 } 323 } 324 return false; 325 } 326 327 bool ObjectFilePECOFF::SetLoadAddress(Target &target, addr_t value, 328 bool value_is_offset) { 329 bool changed = false; 330 ModuleSP module_sp = GetModule(); 331 if (module_sp) { 332 size_t num_loaded_sections = 0; 333 SectionList *section_list = GetSectionList(); 334 if (section_list) { 335 if (!value_is_offset) { 336 value -= m_image_base; 337 } 338 339 const size_t num_sections = section_list->GetSize(); 340 size_t sect_idx = 0; 341 342 for (sect_idx = 0; sect_idx < num_sections; ++sect_idx) { 343 // Iterate through the object file sections to find all of the sections 344 // that have SHF_ALLOC in their flag bits. 345 SectionSP section_sp(section_list->GetSectionAtIndex(sect_idx)); 346 if (section_sp && !section_sp->IsThreadSpecific()) { 347 if (target.GetSectionLoadList().SetSectionLoadAddress( 348 section_sp, section_sp->GetFileAddress() + value)) 349 ++num_loaded_sections; 350 } 351 } 352 changed = num_loaded_sections > 0; 353 } 354 } 355 return changed; 356 } 357 358 ByteOrder ObjectFilePECOFF::GetByteOrder() const { return eByteOrderLittle; } 359 360 bool ObjectFilePECOFF::IsExecutable() const { 361 return (m_coff_header.flags & llvm::COFF::IMAGE_FILE_DLL) == 0; 362 } 363 364 uint32_t ObjectFilePECOFF::GetAddressByteSize() const { 365 if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32_PLUS) 366 return 8; 367 else if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32) 368 return 4; 369 return 4; 370 } 371 372 // NeedsEndianSwap 373 // 374 // Return true if an endian swap needs to occur when extracting data from this 375 // file. 376 bool ObjectFilePECOFF::NeedsEndianSwap() const { 377 #if defined(__LITTLE_ENDIAN__) 378 return false; 379 #else 380 return true; 381 #endif 382 } 383 // ParseDOSHeader 384 bool ObjectFilePECOFF::ParseDOSHeader(DataExtractor &data, 385 dos_header_t &dos_header) { 386 bool success = false; 387 lldb::offset_t offset = 0; 388 success = data.ValidOffsetForDataOfSize(0, sizeof(dos_header)); 389 390 if (success) { 391 dos_header.e_magic = data.GetU16(&offset); // Magic number 392 success = dos_header.e_magic == IMAGE_DOS_SIGNATURE; 393 394 if (success) { 395 dos_header.e_cblp = data.GetU16(&offset); // Bytes on last page of file 396 dos_header.e_cp = data.GetU16(&offset); // Pages in file 397 dos_header.e_crlc = data.GetU16(&offset); // Relocations 398 dos_header.e_cparhdr = 399 data.GetU16(&offset); // Size of header in paragraphs 400 dos_header.e_minalloc = 401 data.GetU16(&offset); // Minimum extra paragraphs needed 402 dos_header.e_maxalloc = 403 data.GetU16(&offset); // Maximum extra paragraphs needed 404 dos_header.e_ss = data.GetU16(&offset); // Initial (relative) SS value 405 dos_header.e_sp = data.GetU16(&offset); // Initial SP value 406 dos_header.e_csum = data.GetU16(&offset); // Checksum 407 dos_header.e_ip = data.GetU16(&offset); // Initial IP value 408 dos_header.e_cs = data.GetU16(&offset); // Initial (relative) CS value 409 dos_header.e_lfarlc = 410 data.GetU16(&offset); // File address of relocation table 411 dos_header.e_ovno = data.GetU16(&offset); // Overlay number 412 413 dos_header.e_res[0] = data.GetU16(&offset); // Reserved words 414 dos_header.e_res[1] = data.GetU16(&offset); // Reserved words 415 dos_header.e_res[2] = data.GetU16(&offset); // Reserved words 416 dos_header.e_res[3] = data.GetU16(&offset); // Reserved words 417 418 dos_header.e_oemid = 419 data.GetU16(&offset); // OEM identifier (for e_oeminfo) 420 dos_header.e_oeminfo = 421 data.GetU16(&offset); // OEM information; e_oemid specific 422 dos_header.e_res2[0] = data.GetU16(&offset); // Reserved words 423 dos_header.e_res2[1] = data.GetU16(&offset); // Reserved words 424 dos_header.e_res2[2] = data.GetU16(&offset); // Reserved words 425 dos_header.e_res2[3] = data.GetU16(&offset); // Reserved words 426 dos_header.e_res2[4] = data.GetU16(&offset); // Reserved words 427 dos_header.e_res2[5] = data.GetU16(&offset); // Reserved words 428 dos_header.e_res2[6] = data.GetU16(&offset); // Reserved words 429 dos_header.e_res2[7] = data.GetU16(&offset); // Reserved words 430 dos_header.e_res2[8] = data.GetU16(&offset); // Reserved words 431 dos_header.e_res2[9] = data.GetU16(&offset); // Reserved words 432 433 dos_header.e_lfanew = 434 data.GetU32(&offset); // File address of new exe header 435 } 436 } 437 if (!success) 438 memset(&dos_header, 0, sizeof(dos_header)); 439 return success; 440 } 441 442 // ParserCOFFHeader 443 bool ObjectFilePECOFF::ParseCOFFHeader(DataExtractor &data, 444 lldb::offset_t *offset_ptr, 445 coff_header_t &coff_header) { 446 bool success = 447 data.ValidOffsetForDataOfSize(*offset_ptr, sizeof(coff_header)); 448 if (success) { 449 coff_header.machine = data.GetU16(offset_ptr); 450 coff_header.nsects = data.GetU16(offset_ptr); 451 coff_header.modtime = data.GetU32(offset_ptr); 452 coff_header.symoff = data.GetU32(offset_ptr); 453 coff_header.nsyms = data.GetU32(offset_ptr); 454 coff_header.hdrsize = data.GetU16(offset_ptr); 455 coff_header.flags = data.GetU16(offset_ptr); 456 } 457 if (!success) 458 memset(&coff_header, 0, sizeof(coff_header)); 459 return success; 460 } 461 462 bool ObjectFilePECOFF::ParseCOFFOptionalHeader(lldb::offset_t *offset_ptr) { 463 bool success = false; 464 const lldb::offset_t end_offset = *offset_ptr + m_coff_header.hdrsize; 465 if (*offset_ptr < end_offset) { 466 success = true; 467 m_coff_header_opt.magic = m_data.GetU16(offset_ptr); 468 m_coff_header_opt.major_linker_version = m_data.GetU8(offset_ptr); 469 m_coff_header_opt.minor_linker_version = m_data.GetU8(offset_ptr); 470 m_coff_header_opt.code_size = m_data.GetU32(offset_ptr); 471 m_coff_header_opt.data_size = m_data.GetU32(offset_ptr); 472 m_coff_header_opt.bss_size = m_data.GetU32(offset_ptr); 473 m_coff_header_opt.entry = m_data.GetU32(offset_ptr); 474 m_coff_header_opt.code_offset = m_data.GetU32(offset_ptr); 475 476 const uint32_t addr_byte_size = GetAddressByteSize(); 477 478 if (*offset_ptr < end_offset) { 479 if (m_coff_header_opt.magic == OPT_HEADER_MAGIC_PE32) { 480 // PE32 only 481 m_coff_header_opt.data_offset = m_data.GetU32(offset_ptr); 482 } else 483 m_coff_header_opt.data_offset = 0; 484 485 if (*offset_ptr < end_offset) { 486 m_coff_header_opt.image_base = 487 m_data.GetMaxU64(offset_ptr, addr_byte_size); 488 m_coff_header_opt.sect_alignment = m_data.GetU32(offset_ptr); 489 m_coff_header_opt.file_alignment = m_data.GetU32(offset_ptr); 490 m_coff_header_opt.major_os_system_version = m_data.GetU16(offset_ptr); 491 m_coff_header_opt.minor_os_system_version = m_data.GetU16(offset_ptr); 492 m_coff_header_opt.major_image_version = m_data.GetU16(offset_ptr); 493 m_coff_header_opt.minor_image_version = m_data.GetU16(offset_ptr); 494 m_coff_header_opt.major_subsystem_version = m_data.GetU16(offset_ptr); 495 m_coff_header_opt.minor_subsystem_version = m_data.GetU16(offset_ptr); 496 m_coff_header_opt.reserved1 = m_data.GetU32(offset_ptr); 497 m_coff_header_opt.image_size = m_data.GetU32(offset_ptr); 498 m_coff_header_opt.header_size = m_data.GetU32(offset_ptr); 499 m_coff_header_opt.checksum = m_data.GetU32(offset_ptr); 500 m_coff_header_opt.subsystem = m_data.GetU16(offset_ptr); 501 m_coff_header_opt.dll_flags = m_data.GetU16(offset_ptr); 502 m_coff_header_opt.stack_reserve_size = 503 m_data.GetMaxU64(offset_ptr, addr_byte_size); 504 m_coff_header_opt.stack_commit_size = 505 m_data.GetMaxU64(offset_ptr, addr_byte_size); 506 m_coff_header_opt.heap_reserve_size = 507 m_data.GetMaxU64(offset_ptr, addr_byte_size); 508 m_coff_header_opt.heap_commit_size = 509 m_data.GetMaxU64(offset_ptr, addr_byte_size); 510 m_coff_header_opt.loader_flags = m_data.GetU32(offset_ptr); 511 uint32_t num_data_dir_entries = m_data.GetU32(offset_ptr); 512 m_coff_header_opt.data_dirs.clear(); 513 m_coff_header_opt.data_dirs.resize(num_data_dir_entries); 514 uint32_t i; 515 for (i = 0; i < num_data_dir_entries; i++) { 516 m_coff_header_opt.data_dirs[i].vmaddr = m_data.GetU32(offset_ptr); 517 m_coff_header_opt.data_dirs[i].vmsize = m_data.GetU32(offset_ptr); 518 } 519 520 m_image_base = m_coff_header_opt.image_base; 521 } 522 } 523 } 524 // Make sure we are on track for section data which follows 525 *offset_ptr = end_offset; 526 return success; 527 } 528 529 uint32_t ObjectFilePECOFF::GetRVA(const Address &addr) const { 530 return addr.GetFileAddress() - m_image_base; 531 } 532 533 Address ObjectFilePECOFF::GetAddress(uint32_t rva) { 534 SectionList *sect_list = GetSectionList(); 535 if (!sect_list) 536 return Address(GetFileAddress(rva)); 537 538 return Address(GetFileAddress(rva), sect_list); 539 } 540 541 lldb::addr_t ObjectFilePECOFF::GetFileAddress(uint32_t rva) const { 542 return m_image_base + rva; 543 } 544 545 DataExtractor ObjectFilePECOFF::ReadImageData(uint32_t offset, size_t size) { 546 if (!size) 547 return {}; 548 549 if (m_file) { 550 // A bit of a hack, but we intend to write to this buffer, so we can't 551 // mmap it. 552 auto buffer_sp = MapFileData(m_file, size, offset); 553 return DataExtractor(buffer_sp, GetByteOrder(), GetAddressByteSize()); 554 } 555 ProcessSP process_sp(m_process_wp.lock()); 556 DataExtractor data; 557 if (process_sp) { 558 auto data_up = std::make_unique<DataBufferHeap>(size, 0); 559 Status readmem_error; 560 size_t bytes_read = 561 process_sp->ReadMemory(m_image_base + offset, data_up->GetBytes(), 562 data_up->GetByteSize(), readmem_error); 563 if (bytes_read == size) { 564 DataBufferSP buffer_sp(data_up.release()); 565 data.SetData(buffer_sp, 0, buffer_sp->GetByteSize()); 566 } 567 } 568 return data; 569 } 570 571 DataExtractor ObjectFilePECOFF::ReadImageDataByRVA(uint32_t rva, size_t size) { 572 if (m_file) { 573 Address addr = GetAddress(rva); 574 SectionSP sect = addr.GetSection(); 575 if (!sect) 576 return {}; 577 rva = sect->GetFileOffset() + addr.GetOffset(); 578 } 579 580 return ReadImageData(rva, size); 581 } 582 583 // ParseSectionHeaders 584 bool ObjectFilePECOFF::ParseSectionHeaders( 585 uint32_t section_header_data_offset) { 586 const uint32_t nsects = m_coff_header.nsects; 587 m_sect_headers.clear(); 588 589 if (nsects > 0) { 590 const size_t section_header_byte_size = nsects * sizeof(section_header_t); 591 DataExtractor section_header_data = 592 ReadImageData(section_header_data_offset, section_header_byte_size); 593 594 lldb::offset_t offset = 0; 595 if (section_header_data.ValidOffsetForDataOfSize( 596 offset, section_header_byte_size)) { 597 m_sect_headers.resize(nsects); 598 599 for (uint32_t idx = 0; idx < nsects; ++idx) { 600 const void *name_data = section_header_data.GetData(&offset, 8); 601 if (name_data) { 602 memcpy(m_sect_headers[idx].name, name_data, 8); 603 m_sect_headers[idx].vmsize = section_header_data.GetU32(&offset); 604 m_sect_headers[idx].vmaddr = section_header_data.GetU32(&offset); 605 m_sect_headers[idx].size = section_header_data.GetU32(&offset); 606 m_sect_headers[idx].offset = section_header_data.GetU32(&offset); 607 m_sect_headers[idx].reloff = section_header_data.GetU32(&offset); 608 m_sect_headers[idx].lineoff = section_header_data.GetU32(&offset); 609 m_sect_headers[idx].nreloc = section_header_data.GetU16(&offset); 610 m_sect_headers[idx].nline = section_header_data.GetU16(&offset); 611 m_sect_headers[idx].flags = section_header_data.GetU32(&offset); 612 } 613 } 614 } 615 } 616 617 return !m_sect_headers.empty(); 618 } 619 620 llvm::StringRef ObjectFilePECOFF::GetSectionName(const section_header_t §) { 621 llvm::StringRef hdr_name(sect.name, llvm::array_lengthof(sect.name)); 622 hdr_name = hdr_name.split('\0').first; 623 if (hdr_name.consume_front("/")) { 624 lldb::offset_t stroff; 625 if (!to_integer(hdr_name, stroff, 10)) 626 return ""; 627 lldb::offset_t string_file_offset = 628 m_coff_header.symoff + (m_coff_header.nsyms * 18) + stroff; 629 if (const char *name = m_data.GetCStr(&string_file_offset)) 630 return name; 631 return ""; 632 } 633 return hdr_name; 634 } 635 636 // GetNListSymtab 637 Symtab *ObjectFilePECOFF::GetSymtab() { 638 ModuleSP module_sp(GetModule()); 639 if (module_sp) { 640 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 641 if (m_symtab_up == nullptr) { 642 SectionList *sect_list = GetSectionList(); 643 m_symtab_up.reset(new Symtab(this)); 644 std::lock_guard<std::recursive_mutex> guard(m_symtab_up->GetMutex()); 645 646 const uint32_t num_syms = m_coff_header.nsyms; 647 648 if (m_file && num_syms > 0 && m_coff_header.symoff > 0) { 649 const uint32_t symbol_size = 18; 650 const size_t symbol_data_size = num_syms * symbol_size; 651 // Include the 4-byte string table size at the end of the symbols 652 DataExtractor symtab_data = 653 ReadImageData(m_coff_header.symoff, symbol_data_size + 4); 654 lldb::offset_t offset = symbol_data_size; 655 const uint32_t strtab_size = symtab_data.GetU32(&offset); 656 if (strtab_size > 0) { 657 DataExtractor strtab_data = ReadImageData( 658 m_coff_header.symoff + symbol_data_size, strtab_size); 659 660 // First 4 bytes should be zeroed after strtab_size has been read, 661 // because it is used as offset 0 to encode a NULL string. 662 uint32_t *strtab_data_start = const_cast<uint32_t *>( 663 reinterpret_cast<const uint32_t *>(strtab_data.GetDataStart())); 664 strtab_data_start[0] = 0; 665 666 offset = 0; 667 std::string symbol_name; 668 Symbol *symbols = m_symtab_up->Resize(num_syms); 669 for (uint32_t i = 0; i < num_syms; ++i) { 670 coff_symbol_t symbol; 671 const uint32_t symbol_offset = offset; 672 const char *symbol_name_cstr = nullptr; 673 // If the first 4 bytes of the symbol string are zero, then they 674 // are followed by a 4-byte string table offset. Else these 675 // 8 bytes contain the symbol name 676 if (symtab_data.GetU32(&offset) == 0) { 677 // Long string that doesn't fit into the symbol table name, so 678 // now we must read the 4 byte string table offset 679 uint32_t strtab_offset = symtab_data.GetU32(&offset); 680 symbol_name_cstr = strtab_data.PeekCStr(strtab_offset); 681 symbol_name.assign(symbol_name_cstr); 682 } else { 683 // Short string that fits into the symbol table name which is 8 684 // bytes 685 offset += sizeof(symbol.name) - 4; // Skip remaining 686 symbol_name_cstr = symtab_data.PeekCStr(symbol_offset); 687 if (symbol_name_cstr == nullptr) 688 break; 689 symbol_name.assign(symbol_name_cstr, sizeof(symbol.name)); 690 } 691 symbol.value = symtab_data.GetU32(&offset); 692 symbol.sect = symtab_data.GetU16(&offset); 693 symbol.type = symtab_data.GetU16(&offset); 694 symbol.storage = symtab_data.GetU8(&offset); 695 symbol.naux = symtab_data.GetU8(&offset); 696 symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); 697 if ((int16_t)symbol.sect >= 1) { 698 Address symbol_addr(sect_list->FindSectionByID(symbol.sect), 699 symbol.value); 700 symbols[i].GetAddressRef() = symbol_addr; 701 symbols[i].SetType(MapSymbolType(symbol.type)); 702 } 703 704 if (symbol.naux > 0) { 705 i += symbol.naux; 706 offset += symbol_size; 707 } 708 } 709 } 710 } 711 712 // Read export header 713 if (coff_data_dir_export_table < m_coff_header_opt.data_dirs.size() && 714 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmsize > 0 && 715 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr > 0) { 716 export_directory_entry export_table; 717 uint32_t data_start = 718 m_coff_header_opt.data_dirs[coff_data_dir_export_table].vmaddr; 719 720 DataExtractor symtab_data = ReadImageDataByRVA( 721 data_start, m_coff_header_opt.data_dirs[0].vmsize); 722 lldb::offset_t offset = 0; 723 724 // Read export_table header 725 export_table.characteristics = symtab_data.GetU32(&offset); 726 export_table.time_date_stamp = symtab_data.GetU32(&offset); 727 export_table.major_version = symtab_data.GetU16(&offset); 728 export_table.minor_version = symtab_data.GetU16(&offset); 729 export_table.name = symtab_data.GetU32(&offset); 730 export_table.base = symtab_data.GetU32(&offset); 731 export_table.number_of_functions = symtab_data.GetU32(&offset); 732 export_table.number_of_names = symtab_data.GetU32(&offset); 733 export_table.address_of_functions = symtab_data.GetU32(&offset); 734 export_table.address_of_names = symtab_data.GetU32(&offset); 735 export_table.address_of_name_ordinals = symtab_data.GetU32(&offset); 736 737 bool has_ordinal = export_table.address_of_name_ordinals != 0; 738 739 lldb::offset_t name_offset = export_table.address_of_names - data_start; 740 lldb::offset_t name_ordinal_offset = 741 export_table.address_of_name_ordinals - data_start; 742 743 Symbol *symbols = m_symtab_up->Resize(export_table.number_of_names); 744 745 std::string symbol_name; 746 747 // Read each export table entry 748 for (size_t i = 0; i < export_table.number_of_names; ++i) { 749 uint32_t name_ordinal = 750 has_ordinal ? symtab_data.GetU16(&name_ordinal_offset) : i; 751 uint32_t name_address = symtab_data.GetU32(&name_offset); 752 753 const char *symbol_name_cstr = 754 symtab_data.PeekCStr(name_address - data_start); 755 symbol_name.assign(symbol_name_cstr); 756 757 lldb::offset_t function_offset = export_table.address_of_functions - 758 data_start + 759 sizeof(uint32_t) * name_ordinal; 760 uint32_t function_rva = symtab_data.GetU32(&function_offset); 761 762 Address symbol_addr(m_coff_header_opt.image_base + function_rva, 763 sect_list); 764 symbols[i].GetMangled().SetValue(ConstString(symbol_name.c_str())); 765 symbols[i].GetAddressRef() = symbol_addr; 766 symbols[i].SetType(lldb::eSymbolTypeCode); 767 symbols[i].SetDebug(true); 768 } 769 } 770 m_symtab_up->CalculateSymbolSizes(); 771 } 772 } 773 return m_symtab_up.get(); 774 } 775 776 std::unique_ptr<CallFrameInfo> ObjectFilePECOFF::CreateCallFrameInfo() { 777 if (coff_data_dir_exception_table >= m_coff_header_opt.data_dirs.size()) 778 return {}; 779 780 data_directory data_dir_exception = 781 m_coff_header_opt.data_dirs[coff_data_dir_exception_table]; 782 if (!data_dir_exception.vmaddr) 783 return {}; 784 785 if (m_coff_header.machine != llvm::COFF::IMAGE_FILE_MACHINE_AMD64) 786 return {}; 787 788 return std::make_unique<PECallFrameInfo>(*this, data_dir_exception.vmaddr, 789 data_dir_exception.vmsize); 790 } 791 792 bool ObjectFilePECOFF::IsStripped() { 793 // TODO: determine this for COFF 794 return false; 795 } 796 797 SectionType ObjectFilePECOFF::GetSectionType(llvm::StringRef sect_name, 798 const section_header_t §) { 799 ConstString const_sect_name(sect_name); 800 static ConstString g_code_sect_name(".code"); 801 static ConstString g_CODE_sect_name("CODE"); 802 static ConstString g_data_sect_name(".data"); 803 static ConstString g_DATA_sect_name("DATA"); 804 static ConstString g_bss_sect_name(".bss"); 805 static ConstString g_BSS_sect_name("BSS"); 806 807 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_CODE && 808 ((const_sect_name == g_code_sect_name) || 809 (const_sect_name == g_CODE_sect_name))) { 810 return eSectionTypeCode; 811 } 812 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA && 813 ((const_sect_name == g_data_sect_name) || 814 (const_sect_name == g_DATA_sect_name))) { 815 if (sect.size == 0 && sect.offset == 0) 816 return eSectionTypeZeroFill; 817 else 818 return eSectionTypeData; 819 } 820 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA && 821 ((const_sect_name == g_bss_sect_name) || 822 (const_sect_name == g_BSS_sect_name))) { 823 if (sect.size == 0) 824 return eSectionTypeZeroFill; 825 else 826 return eSectionTypeData; 827 } 828 829 SectionType section_type = 830 llvm::StringSwitch<SectionType>(sect_name) 831 .Case(".debug", eSectionTypeDebug) 832 .Case(".stabstr", eSectionTypeDataCString) 833 .Case(".reloc", eSectionTypeOther) 834 .Case(".debug_abbrev", eSectionTypeDWARFDebugAbbrev) 835 .Case(".debug_aranges", eSectionTypeDWARFDebugAranges) 836 .Case(".debug_frame", eSectionTypeDWARFDebugFrame) 837 .Case(".debug_info", eSectionTypeDWARFDebugInfo) 838 .Case(".debug_line", eSectionTypeDWARFDebugLine) 839 .Case(".debug_loc", eSectionTypeDWARFDebugLoc) 840 .Case(".debug_loclists", eSectionTypeDWARFDebugLocLists) 841 .Case(".debug_macinfo", eSectionTypeDWARFDebugMacInfo) 842 .Case(".debug_names", eSectionTypeDWARFDebugNames) 843 .Case(".debug_pubnames", eSectionTypeDWARFDebugPubNames) 844 .Case(".debug_pubtypes", eSectionTypeDWARFDebugPubTypes) 845 .Case(".debug_ranges", eSectionTypeDWARFDebugRanges) 846 .Case(".debug_str", eSectionTypeDWARFDebugStr) 847 .Case(".debug_types", eSectionTypeDWARFDebugTypes) 848 // .eh_frame can be truncated to 8 chars. 849 .Cases(".eh_frame", ".eh_fram", eSectionTypeEHFrame) 850 .Case(".gosymtab", eSectionTypeGoSymtab) 851 .Default(eSectionTypeInvalid); 852 if (section_type != eSectionTypeInvalid) 853 return section_type; 854 855 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_CODE) 856 return eSectionTypeCode; 857 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_INITIALIZED_DATA) 858 return eSectionTypeData; 859 if (sect.flags & llvm::COFF::IMAGE_SCN_CNT_UNINITIALIZED_DATA) { 860 if (sect.size == 0) 861 return eSectionTypeZeroFill; 862 else 863 return eSectionTypeData; 864 } 865 return eSectionTypeOther; 866 } 867 868 void ObjectFilePECOFF::CreateSections(SectionList &unified_section_list) { 869 if (m_sections_up) 870 return; 871 m_sections_up.reset(new SectionList()); 872 873 ModuleSP module_sp(GetModule()); 874 if (module_sp) { 875 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 876 877 SectionSP header_sp = std::make_shared<Section>( 878 module_sp, this, ~user_id_t(0), ConstString("PECOFF header"), 879 eSectionTypeOther, m_coff_header_opt.image_base, 880 m_coff_header_opt.header_size, 881 /*file_offset*/ 0, m_coff_header_opt.header_size, 882 m_coff_header_opt.sect_alignment, 883 /*flags*/ 0); 884 header_sp->SetPermissions(ePermissionsReadable); 885 m_sections_up->AddSection(header_sp); 886 unified_section_list.AddSection(header_sp); 887 888 const uint32_t nsects = m_sect_headers.size(); 889 ModuleSP module_sp(GetModule()); 890 for (uint32_t idx = 0; idx < nsects; ++idx) { 891 llvm::StringRef sect_name = GetSectionName(m_sect_headers[idx]); 892 ConstString const_sect_name(sect_name); 893 SectionType section_type = GetSectionType(sect_name, m_sect_headers[idx]); 894 895 SectionSP section_sp(new Section( 896 module_sp, // Module to which this section belongs 897 this, // Object file to which this section belongs 898 idx + 1, // Section ID is the 1 based section index. 899 const_sect_name, // Name of this section 900 section_type, 901 m_coff_header_opt.image_base + 902 m_sect_headers[idx].vmaddr, // File VM address == addresses as 903 // they are found in the object file 904 m_sect_headers[idx].vmsize, // VM size in bytes of this section 905 m_sect_headers[idx] 906 .offset, // Offset to the data for this section in the file 907 m_sect_headers[idx] 908 .size, // Size in bytes of this section as found in the file 909 m_coff_header_opt.sect_alignment, // Section alignment 910 m_sect_headers[idx].flags)); // Flags for this section 911 912 uint32_t permissions = 0; 913 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_EXECUTE) 914 permissions |= ePermissionsExecutable; 915 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_READ) 916 permissions |= ePermissionsReadable; 917 if (m_sect_headers[idx].flags & llvm::COFF::IMAGE_SCN_MEM_WRITE) 918 permissions |= ePermissionsWritable; 919 section_sp->SetPermissions(permissions); 920 921 m_sections_up->AddSection(section_sp); 922 unified_section_list.AddSection(section_sp); 923 } 924 } 925 } 926 927 UUID ObjectFilePECOFF::GetUUID() { 928 if (m_uuid.IsValid()) 929 return m_uuid; 930 931 if (!CreateBinary()) 932 return UUID(); 933 934 auto COFFObj = 935 llvm::cast<llvm::object::COFFObjectFile>(m_owningbin->getBinary()); 936 937 m_uuid = GetCoffUUID(COFFObj); 938 return m_uuid; 939 } 940 941 uint32_t ObjectFilePECOFF::ParseDependentModules() { 942 ModuleSP module_sp(GetModule()); 943 if (!module_sp) 944 return 0; 945 946 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 947 if (m_deps_filespec) 948 return m_deps_filespec->GetSize(); 949 950 // Cache coff binary if it is not done yet. 951 if (!CreateBinary()) 952 return 0; 953 954 Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_OBJECT)); 955 LLDB_LOGF(log, 956 "%p ObjectFilePECOFF::ParseDependentModules() module = %p " 957 "(%s), binary = %p (Bin = %p)", 958 static_cast<void *>(this), static_cast<void *>(module_sp.get()), 959 module_sp->GetSpecificationDescription().c_str(), 960 static_cast<void *>(m_owningbin.getPointer()), 961 static_cast<void *>(m_owningbin->getBinary())); 962 963 auto COFFObj = 964 llvm::dyn_cast<llvm::object::COFFObjectFile>(m_owningbin->getBinary()); 965 if (!COFFObj) 966 return 0; 967 968 m_deps_filespec = FileSpecList(); 969 970 for (const auto &entry : COFFObj->import_directories()) { 971 llvm::StringRef dll_name; 972 auto ec = entry.getName(dll_name); 973 // Report a bogus entry. 974 if (ec != std::error_code()) { 975 LLDB_LOGF(log, 976 "ObjectFilePECOFF::ParseDependentModules() - failed to get " 977 "import directory entry name: %s", 978 ec.message().c_str()); 979 continue; 980 } 981 982 // At this moment we only have the base name of the DLL. The full path can 983 // only be seen after the dynamic loading. Our best guess is Try to get it 984 // with the help of the object file's directory. 985 llvm::SmallString<128> dll_fullpath; 986 FileSpec dll_specs(dll_name); 987 dll_specs.GetDirectory().SetString(m_file.GetDirectory().GetCString()); 988 989 if (!llvm::sys::fs::real_path(dll_specs.GetPath(), dll_fullpath)) 990 m_deps_filespec->EmplaceBack(dll_fullpath); 991 else { 992 // Known DLLs or DLL not found in the object file directory. 993 m_deps_filespec->EmplaceBack(dll_name); 994 } 995 } 996 return m_deps_filespec->GetSize(); 997 } 998 999 uint32_t ObjectFilePECOFF::GetDependentModules(FileSpecList &files) { 1000 auto num_modules = ParseDependentModules(); 1001 auto original_size = files.GetSize(); 1002 1003 for (unsigned i = 0; i < num_modules; ++i) 1004 files.AppendIfUnique(m_deps_filespec->GetFileSpecAtIndex(i)); 1005 1006 return files.GetSize() - original_size; 1007 } 1008 1009 lldb_private::Address ObjectFilePECOFF::GetEntryPointAddress() { 1010 if (m_entry_point_address.IsValid()) 1011 return m_entry_point_address; 1012 1013 if (!ParseHeader() || !IsExecutable()) 1014 return m_entry_point_address; 1015 1016 SectionList *section_list = GetSectionList(); 1017 addr_t file_addr = m_coff_header_opt.entry + m_coff_header_opt.image_base; 1018 1019 if (!section_list) 1020 m_entry_point_address.SetOffset(file_addr); 1021 else 1022 m_entry_point_address.ResolveAddressUsingFileSections(file_addr, 1023 section_list); 1024 return m_entry_point_address; 1025 } 1026 1027 Address ObjectFilePECOFF::GetBaseAddress() { 1028 return Address(GetSectionList()->GetSectionAtIndex(0), 0); 1029 } 1030 1031 // Dump 1032 // 1033 // Dump the specifics of the runtime file container (such as any headers 1034 // segments, sections, etc). 1035 void ObjectFilePECOFF::Dump(Stream *s) { 1036 ModuleSP module_sp(GetModule()); 1037 if (module_sp) { 1038 std::lock_guard<std::recursive_mutex> guard(module_sp->GetMutex()); 1039 s->Printf("%p: ", static_cast<void *>(this)); 1040 s->Indent(); 1041 s->PutCString("ObjectFilePECOFF"); 1042 1043 ArchSpec header_arch = GetArchitecture(); 1044 1045 *s << ", file = '" << m_file 1046 << "', arch = " << header_arch.GetArchitectureName() << "\n"; 1047 1048 SectionList *sections = GetSectionList(); 1049 if (sections) 1050 sections->Dump(s->AsRawOstream(), s->GetIndentLevel(), nullptr, true, 1051 UINT32_MAX); 1052 1053 if (m_symtab_up) 1054 m_symtab_up->Dump(s, nullptr, eSortOrderNone); 1055 1056 if (m_dos_header.e_magic) 1057 DumpDOSHeader(s, m_dos_header); 1058 if (m_coff_header.machine) { 1059 DumpCOFFHeader(s, m_coff_header); 1060 if (m_coff_header.hdrsize) 1061 DumpOptCOFFHeader(s, m_coff_header_opt); 1062 } 1063 s->EOL(); 1064 DumpSectionHeaders(s); 1065 s->EOL(); 1066 1067 DumpDependentModules(s); 1068 s->EOL(); 1069 } 1070 } 1071 1072 // DumpDOSHeader 1073 // 1074 // Dump the MS-DOS header to the specified output stream 1075 void ObjectFilePECOFF::DumpDOSHeader(Stream *s, const dos_header_t &header) { 1076 s->PutCString("MSDOS Header\n"); 1077 s->Printf(" e_magic = 0x%4.4x\n", header.e_magic); 1078 s->Printf(" e_cblp = 0x%4.4x\n", header.e_cblp); 1079 s->Printf(" e_cp = 0x%4.4x\n", header.e_cp); 1080 s->Printf(" e_crlc = 0x%4.4x\n", header.e_crlc); 1081 s->Printf(" e_cparhdr = 0x%4.4x\n", header.e_cparhdr); 1082 s->Printf(" e_minalloc = 0x%4.4x\n", header.e_minalloc); 1083 s->Printf(" e_maxalloc = 0x%4.4x\n", header.e_maxalloc); 1084 s->Printf(" e_ss = 0x%4.4x\n", header.e_ss); 1085 s->Printf(" e_sp = 0x%4.4x\n", header.e_sp); 1086 s->Printf(" e_csum = 0x%4.4x\n", header.e_csum); 1087 s->Printf(" e_ip = 0x%4.4x\n", header.e_ip); 1088 s->Printf(" e_cs = 0x%4.4x\n", header.e_cs); 1089 s->Printf(" e_lfarlc = 0x%4.4x\n", header.e_lfarlc); 1090 s->Printf(" e_ovno = 0x%4.4x\n", header.e_ovno); 1091 s->Printf(" e_res[4] = { 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x }\n", 1092 header.e_res[0], header.e_res[1], header.e_res[2], header.e_res[3]); 1093 s->Printf(" e_oemid = 0x%4.4x\n", header.e_oemid); 1094 s->Printf(" e_oeminfo = 0x%4.4x\n", header.e_oeminfo); 1095 s->Printf(" e_res2[10] = { 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, " 1096 "0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x, 0x%4.4x }\n", 1097 header.e_res2[0], header.e_res2[1], header.e_res2[2], 1098 header.e_res2[3], header.e_res2[4], header.e_res2[5], 1099 header.e_res2[6], header.e_res2[7], header.e_res2[8], 1100 header.e_res2[9]); 1101 s->Printf(" e_lfanew = 0x%8.8x\n", header.e_lfanew); 1102 } 1103 1104 // DumpCOFFHeader 1105 // 1106 // Dump the COFF header to the specified output stream 1107 void ObjectFilePECOFF::DumpCOFFHeader(Stream *s, const coff_header_t &header) { 1108 s->PutCString("COFF Header\n"); 1109 s->Printf(" machine = 0x%4.4x\n", header.machine); 1110 s->Printf(" nsects = 0x%4.4x\n", header.nsects); 1111 s->Printf(" modtime = 0x%8.8x\n", header.modtime); 1112 s->Printf(" symoff = 0x%8.8x\n", header.symoff); 1113 s->Printf(" nsyms = 0x%8.8x\n", header.nsyms); 1114 s->Printf(" hdrsize = 0x%4.4x\n", header.hdrsize); 1115 } 1116 1117 // DumpOptCOFFHeader 1118 // 1119 // Dump the optional COFF header to the specified output stream 1120 void ObjectFilePECOFF::DumpOptCOFFHeader(Stream *s, 1121 const coff_opt_header_t &header) { 1122 s->PutCString("Optional COFF Header\n"); 1123 s->Printf(" magic = 0x%4.4x\n", header.magic); 1124 s->Printf(" major_linker_version = 0x%2.2x\n", 1125 header.major_linker_version); 1126 s->Printf(" minor_linker_version = 0x%2.2x\n", 1127 header.minor_linker_version); 1128 s->Printf(" code_size = 0x%8.8x\n", header.code_size); 1129 s->Printf(" data_size = 0x%8.8x\n", header.data_size); 1130 s->Printf(" bss_size = 0x%8.8x\n", header.bss_size); 1131 s->Printf(" entry = 0x%8.8x\n", header.entry); 1132 s->Printf(" code_offset = 0x%8.8x\n", header.code_offset); 1133 s->Printf(" data_offset = 0x%8.8x\n", header.data_offset); 1134 s->Printf(" image_base = 0x%16.16" PRIx64 "\n", 1135 header.image_base); 1136 s->Printf(" sect_alignment = 0x%8.8x\n", header.sect_alignment); 1137 s->Printf(" file_alignment = 0x%8.8x\n", header.file_alignment); 1138 s->Printf(" major_os_system_version = 0x%4.4x\n", 1139 header.major_os_system_version); 1140 s->Printf(" minor_os_system_version = 0x%4.4x\n", 1141 header.minor_os_system_version); 1142 s->Printf(" major_image_version = 0x%4.4x\n", 1143 header.major_image_version); 1144 s->Printf(" minor_image_version = 0x%4.4x\n", 1145 header.minor_image_version); 1146 s->Printf(" major_subsystem_version = 0x%4.4x\n", 1147 header.major_subsystem_version); 1148 s->Printf(" minor_subsystem_version = 0x%4.4x\n", 1149 header.minor_subsystem_version); 1150 s->Printf(" reserved1 = 0x%8.8x\n", header.reserved1); 1151 s->Printf(" image_size = 0x%8.8x\n", header.image_size); 1152 s->Printf(" header_size = 0x%8.8x\n", header.header_size); 1153 s->Printf(" checksum = 0x%8.8x\n", header.checksum); 1154 s->Printf(" subsystem = 0x%4.4x\n", header.subsystem); 1155 s->Printf(" dll_flags = 0x%4.4x\n", header.dll_flags); 1156 s->Printf(" stack_reserve_size = 0x%16.16" PRIx64 "\n", 1157 header.stack_reserve_size); 1158 s->Printf(" stack_commit_size = 0x%16.16" PRIx64 "\n", 1159 header.stack_commit_size); 1160 s->Printf(" heap_reserve_size = 0x%16.16" PRIx64 "\n", 1161 header.heap_reserve_size); 1162 s->Printf(" heap_commit_size = 0x%16.16" PRIx64 "\n", 1163 header.heap_commit_size); 1164 s->Printf(" loader_flags = 0x%8.8x\n", header.loader_flags); 1165 s->Printf(" num_data_dir_entries = 0x%8.8x\n", 1166 (uint32_t)header.data_dirs.size()); 1167 uint32_t i; 1168 for (i = 0; i < header.data_dirs.size(); i++) { 1169 s->Printf(" data_dirs[%2u] vmaddr = 0x%8.8x, vmsize = 0x%8.8x\n", i, 1170 header.data_dirs[i].vmaddr, header.data_dirs[i].vmsize); 1171 } 1172 } 1173 // DumpSectionHeader 1174 // 1175 // Dump a single ELF section header to the specified output stream 1176 void ObjectFilePECOFF::DumpSectionHeader(Stream *s, 1177 const section_header_t &sh) { 1178 std::string name = std::string(GetSectionName(sh)); 1179 s->Printf("%-16s 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x 0x%4.4x " 1180 "0x%4.4x 0x%8.8x\n", 1181 name.c_str(), sh.vmaddr, sh.vmsize, sh.offset, sh.size, sh.reloff, 1182 sh.lineoff, sh.nreloc, sh.nline, sh.flags); 1183 } 1184 1185 // DumpSectionHeaders 1186 // 1187 // Dump all of the ELF section header to the specified output stream 1188 void ObjectFilePECOFF::DumpSectionHeaders(Stream *s) { 1189 1190 s->PutCString("Section Headers\n"); 1191 s->PutCString("IDX name vm addr vm size file off file " 1192 "size reloc off line off nreloc nline flags\n"); 1193 s->PutCString("==== ---------------- ---------- ---------- ---------- " 1194 "---------- ---------- ---------- ------ ------ ----------\n"); 1195 1196 uint32_t idx = 0; 1197 SectionHeaderCollIter pos, end = m_sect_headers.end(); 1198 1199 for (pos = m_sect_headers.begin(); pos != end; ++pos, ++idx) { 1200 s->Printf("[%2u] ", idx); 1201 ObjectFilePECOFF::DumpSectionHeader(s, *pos); 1202 } 1203 } 1204 1205 // DumpDependentModules 1206 // 1207 // Dump all of the dependent modules to the specified output stream 1208 void ObjectFilePECOFF::DumpDependentModules(lldb_private::Stream *s) { 1209 auto num_modules = ParseDependentModules(); 1210 if (num_modules > 0) { 1211 s->PutCString("Dependent Modules\n"); 1212 for (unsigned i = 0; i < num_modules; ++i) { 1213 auto spec = m_deps_filespec->GetFileSpecAtIndex(i); 1214 s->Printf(" %s\n", spec.GetFilename().GetCString()); 1215 } 1216 } 1217 } 1218 1219 bool ObjectFilePECOFF::IsWindowsSubsystem() { 1220 switch (m_coff_header_opt.subsystem) { 1221 case llvm::COFF::IMAGE_SUBSYSTEM_NATIVE: 1222 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_GUI: 1223 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_CUI: 1224 case llvm::COFF::IMAGE_SUBSYSTEM_NATIVE_WINDOWS: 1225 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_CE_GUI: 1226 case llvm::COFF::IMAGE_SUBSYSTEM_XBOX: 1227 case llvm::COFF::IMAGE_SUBSYSTEM_WINDOWS_BOOT_APPLICATION: 1228 return true; 1229 default: 1230 return false; 1231 } 1232 } 1233 1234 ArchSpec ObjectFilePECOFF::GetArchitecture() { 1235 uint16_t machine = m_coff_header.machine; 1236 switch (machine) { 1237 default: 1238 break; 1239 case llvm::COFF::IMAGE_FILE_MACHINE_AMD64: 1240 case llvm::COFF::IMAGE_FILE_MACHINE_I386: 1241 case llvm::COFF::IMAGE_FILE_MACHINE_POWERPC: 1242 case llvm::COFF::IMAGE_FILE_MACHINE_POWERPCFP: 1243 case llvm::COFF::IMAGE_FILE_MACHINE_ARM: 1244 case llvm::COFF::IMAGE_FILE_MACHINE_ARMNT: 1245 case llvm::COFF::IMAGE_FILE_MACHINE_THUMB: 1246 case llvm::COFF::IMAGE_FILE_MACHINE_ARM64: 1247 ArchSpec arch; 1248 arch.SetArchitecture(eArchTypeCOFF, machine, LLDB_INVALID_CPUTYPE, 1249 IsWindowsSubsystem() ? llvm::Triple::Win32 1250 : llvm::Triple::UnknownOS); 1251 return arch; 1252 } 1253 return ArchSpec(); 1254 } 1255 1256 ObjectFile::Type ObjectFilePECOFF::CalculateType() { 1257 if (m_coff_header.machine != 0) { 1258 if ((m_coff_header.flags & llvm::COFF::IMAGE_FILE_DLL) == 0) 1259 return eTypeExecutable; 1260 else 1261 return eTypeSharedLibrary; 1262 } 1263 return eTypeExecutable; 1264 } 1265 1266 ObjectFile::Strata ObjectFilePECOFF::CalculateStrata() { return eStrataUser; } 1267 1268 // PluginInterface protocol 1269 ConstString ObjectFilePECOFF::GetPluginName() { return GetPluginNameStatic(); } 1270 1271 uint32_t ObjectFilePECOFF::GetPluginVersion() { return 1; } 1272