LLVM  6.0.0svn
COFFObjectFile.cpp
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1 //===- COFFObjectFile.cpp - COFF object file implementation ---------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file declares the COFFObjectFile class.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "llvm/ADT/ArrayRef.h"
15 #include "llvm/ADT/StringRef.h"
16 #include "llvm/ADT/Triple.h"
18 #include "llvm/BinaryFormat/COFF.h"
19 #include "llvm/Object/Binary.h"
20 #include "llvm/Object/COFF.h"
21 #include "llvm/Object/Error.h"
22 #include "llvm/Object/ObjectFile.h"
24 #include "llvm/Support/Endian.h"
25 #include "llvm/Support/Error.h"
29 #include <algorithm>
30 #include <cassert>
31 #include <cstddef>
32 #include <cstdint>
33 #include <cstring>
34 #include <limits>
35 #include <memory>
36 #include <system_error>
37 
38 using namespace llvm;
39 using namespace object;
40 
45 
46 // Returns false if size is greater than the buffer size. And sets ec.
47 static bool checkSize(MemoryBufferRef M, std::error_code &EC, uint64_t Size) {
48  if (M.getBufferSize() < Size) {
50  return false;
51  }
52  return true;
53 }
54 
55 // Sets Obj unless any bytes in [addr, addr + size) fall outsize of m.
56 // Returns unexpected_eof if error.
57 template <typename T>
58 static std::error_code getObject(const T *&Obj, MemoryBufferRef M,
59  const void *Ptr,
60  const uint64_t Size = sizeof(T)) {
61  uintptr_t Addr = uintptr_t(Ptr);
62  if (std::error_code EC = Binary::checkOffset(M, Addr, Size))
63  return EC;
64  Obj = reinterpret_cast<const T *>(Addr);
65  return std::error_code();
66 }
67 
68 // Decode a string table entry in base 64 (//AAAAAA). Expects \arg Str without
69 // prefixed slashes.
70 static bool decodeBase64StringEntry(StringRef Str, uint32_t &Result) {
71  assert(Str.size() <= 6 && "String too long, possible overflow.");
72  if (Str.size() > 6)
73  return true;
74 
75  uint64_t Value = 0;
76  while (!Str.empty()) {
77  unsigned CharVal;
78  if (Str[0] >= 'A' && Str[0] <= 'Z') // 0..25
79  CharVal = Str[0] - 'A';
80  else if (Str[0] >= 'a' && Str[0] <= 'z') // 26..51
81  CharVal = Str[0] - 'a' + 26;
82  else if (Str[0] >= '0' && Str[0] <= '9') // 52..61
83  CharVal = Str[0] - '0' + 52;
84  else if (Str[0] == '+') // 62
85  CharVal = 62;
86  else if (Str[0] == '/') // 63
87  CharVal = 63;
88  else
89  return true;
90 
91  Value = (Value * 64) + CharVal;
92  Str = Str.substr(1);
93  }
94 
96  return true;
97 
98  Result = static_cast<uint32_t>(Value);
99  return false;
100 }
101 
102 template <typename coff_symbol_type>
103 const coff_symbol_type *COFFObjectFile::toSymb(DataRefImpl Ref) const {
104  const coff_symbol_type *Addr =
105  reinterpret_cast<const coff_symbol_type *>(Ref.p);
106 
107  assert(!checkOffset(Data, uintptr_t(Addr), sizeof(*Addr)));
108 #ifndef NDEBUG
109  // Verify that the symbol points to a valid entry in the symbol table.
110  uintptr_t Offset = uintptr_t(Addr) - uintptr_t(base());
111 
112  assert((Offset - getPointerToSymbolTable()) % sizeof(coff_symbol_type) == 0 &&
113  "Symbol did not point to the beginning of a symbol");
114 #endif
115 
116  return Addr;
117 }
118 
119 const coff_section *COFFObjectFile::toSec(DataRefImpl Ref) const {
120  const coff_section *Addr = reinterpret_cast<const coff_section*>(Ref.p);
121 
122 #ifndef NDEBUG
123  // Verify that the section points to a valid entry in the section table.
124  if (Addr < SectionTable || Addr >= (SectionTable + getNumberOfSections()))
125  report_fatal_error("Section was outside of section table.");
126 
127  uintptr_t Offset = uintptr_t(Addr) - uintptr_t(SectionTable);
128  assert(Offset % sizeof(coff_section) == 0 &&
129  "Section did not point to the beginning of a section");
130 #endif
131 
132  return Addr;
133 }
134 
136  auto End = reinterpret_cast<uintptr_t>(StringTable);
137  if (SymbolTable16) {
138  const coff_symbol16 *Symb = toSymb<coff_symbol16>(Ref);
139  Symb += 1 + Symb->NumberOfAuxSymbols;
140  Ref.p = std::min(reinterpret_cast<uintptr_t>(Symb), End);
141  } else if (SymbolTable32) {
142  const coff_symbol32 *Symb = toSymb<coff_symbol32>(Ref);
143  Symb += 1 + Symb->NumberOfAuxSymbols;
144  Ref.p = std::min(reinterpret_cast<uintptr_t>(Symb), End);
145  } else {
146  llvm_unreachable("no symbol table pointer!");
147  }
148 }
149 
151  COFFSymbolRef Symb = getCOFFSymbol(Ref);
152  StringRef Result;
153  if (std::error_code EC = getSymbolName(Symb, Result))
154  return errorCodeToError(EC);
155  return Result;
156 }
157 
159  return getCOFFSymbol(Ref).getValue();
160 }
161 
163  // MSVC/link.exe seems to align symbols to the next-power-of-2
164  // up to 32 bytes.
165  COFFSymbolRef Symb = getCOFFSymbol(Ref);
166  return std::min(uint64_t(32), PowerOf2Ceil(Symb.getValue()));
167 }
168 
170  uint64_t Result = getSymbolValue(Ref);
171  COFFSymbolRef Symb = getCOFFSymbol(Ref);
172  int32_t SectionNumber = Symb.getSectionNumber();
173 
174  if (Symb.isAnyUndefined() || Symb.isCommon() ||
175  COFF::isReservedSectionNumber(SectionNumber))
176  return Result;
177 
178  const coff_section *Section = nullptr;
179  if (std::error_code EC = getSection(SectionNumber, Section))
180  return errorCodeToError(EC);
181  Result += Section->VirtualAddress;
182 
183  // The section VirtualAddress does not include ImageBase, and we want to
184  // return virtual addresses.
185  Result += getImageBase();
186 
187  return Result;
188 }
189 
191  COFFSymbolRef Symb = getCOFFSymbol(Ref);
192  int32_t SectionNumber = Symb.getSectionNumber();
193 
195  return SymbolRef::ST_Function;
196  if (Symb.isAnyUndefined())
197  return SymbolRef::ST_Unknown;
198  if (Symb.isCommon())
199  return SymbolRef::ST_Data;
200  if (Symb.isFileRecord())
201  return SymbolRef::ST_File;
202 
203  // TODO: perhaps we need a new symbol type ST_Section.
204  if (SectionNumber == COFF::IMAGE_SYM_DEBUG || Symb.isSectionDefinition())
205  return SymbolRef::ST_Debug;
206 
207  if (!COFF::isReservedSectionNumber(SectionNumber))
208  return SymbolRef::ST_Data;
209 
210  return SymbolRef::ST_Other;
211 }
212 
214  COFFSymbolRef Symb = getCOFFSymbol(Ref);
215  uint32_t Result = SymbolRef::SF_None;
216 
217  if (Symb.isExternal() || Symb.isWeakExternal())
218  Result |= SymbolRef::SF_Global;
219 
220  if (Symb.isWeakExternal()) {
221  Result |= SymbolRef::SF_Weak;
222  // We use indirect to allow the archiver to write weak externs
223  Result |= SymbolRef::SF_Indirect;
224  }
225 
227  Result |= SymbolRef::SF_Absolute;
228 
229  if (Symb.isFileRecord())
231 
232  if (Symb.isSectionDefinition())
234 
235  if (Symb.isCommon())
236  Result |= SymbolRef::SF_Common;
237 
238  if (Symb.isAnyUndefined())
239  Result |= SymbolRef::SF_Undefined;
240 
241  return Result;
242 }
243 
245  COFFSymbolRef Symb = getCOFFSymbol(Ref);
246  return Symb.getValue();
247 }
248 
251  COFFSymbolRef Symb = getCOFFSymbol(Ref);
253  return section_end();
254  const coff_section *Sec = nullptr;
255  if (std::error_code EC = getSection(Symb.getSectionNumber(), Sec))
256  return errorCodeToError(EC);
258  Ret.p = reinterpret_cast<uintptr_t>(Sec);
259  return section_iterator(SectionRef(Ret, this));
260 }
261 
264  return Symb.getSectionNumber();
265 }
266 
268  const coff_section *Sec = toSec(Ref);
269  Sec += 1;
270  Ref.p = reinterpret_cast<uintptr_t>(Sec);
271 }
272 
273 std::error_code COFFObjectFile::getSectionName(DataRefImpl Ref,
274  StringRef &Result) const {
275  const coff_section *Sec = toSec(Ref);
276  return getSectionName(Sec, Result);
277 }
278 
280  const coff_section *Sec = toSec(Ref);
281  uint64_t Result = Sec->VirtualAddress;
282 
283  // The section VirtualAddress does not include ImageBase, and we want to
284  // return virtual addresses.
285  Result += getImageBase();
286  return Result;
287 }
288 
290  return toSec(Sec) - SectionTable;
291 }
292 
293 uint64_t COFFObjectFile::getSectionSize(DataRefImpl Ref) const {
294  return getSectionSize(toSec(Ref));
295 }
296 
298  StringRef &Result) const {
299  const coff_section *Sec = toSec(Ref);
300  ArrayRef<uint8_t> Res;
301  std::error_code EC = getSectionContents(Sec, Res);
302  Result = StringRef(reinterpret_cast<const char*>(Res.data()), Res.size());
303  return EC;
304 }
305 
307  const coff_section *Sec = toSec(Ref);
308  return Sec->getAlignment();
309 }
310 
312  return false;
313 }
314 
316  const coff_section *Sec = toSec(Ref);
318 }
319 
321  const coff_section *Sec = toSec(Ref);
323 }
324 
326  const coff_section *Sec = toSec(Ref);
330  return (Sec->Characteristics & BssFlags) == BssFlags;
331 }
332 
334  uintptr_t Offset =
335  uintptr_t(Sec.getRawDataRefImpl().p) - uintptr_t(SectionTable);
336  assert((Offset % sizeof(coff_section)) == 0);
337  return (Offset / sizeof(coff_section)) + 1;
338 }
339 
341  const coff_section *Sec = toSec(Ref);
342  // In COFF, a virtual section won't have any in-file
343  // content, so the file pointer to the content will be zero.
344  return Sec->PointerToRawData == 0;
345 }
346 
347 static uint32_t getNumberOfRelocations(const coff_section *Sec,
348  MemoryBufferRef M, const uint8_t *base) {
349  // The field for the number of relocations in COFF section table is only
350  // 16-bit wide. If a section has more than 65535 relocations, 0xFFFF is set to
351  // NumberOfRelocations field, and the actual relocation count is stored in the
352  // VirtualAddress field in the first relocation entry.
353  if (Sec->hasExtendedRelocations()) {
354  const coff_relocation *FirstReloc;
355  if (getObject(FirstReloc, M, reinterpret_cast<const coff_relocation*>(
356  base + Sec->PointerToRelocations)))
357  return 0;
358  // -1 to exclude this first relocation entry.
359  return FirstReloc->VirtualAddress - 1;
360  }
361  return Sec->NumberOfRelocations;
362 }
363 
364 static const coff_relocation *
365 getFirstReloc(const coff_section *Sec, MemoryBufferRef M, const uint8_t *Base) {
366  uint64_t NumRelocs = getNumberOfRelocations(Sec, M, Base);
367  if (!NumRelocs)
368  return nullptr;
369  auto begin = reinterpret_cast<const coff_relocation *>(
370  Base + Sec->PointerToRelocations);
371  if (Sec->hasExtendedRelocations()) {
372  // Skip the first relocation entry repurposed to store the number of
373  // relocations.
374  begin++;
375  }
376  if (Binary::checkOffset(M, uintptr_t(begin),
377  sizeof(coff_relocation) * NumRelocs))
378  return nullptr;
379  return begin;
380 }
381 
383  const coff_section *Sec = toSec(Ref);
384  const coff_relocation *begin = getFirstReloc(Sec, Data, base());
385  if (begin && Sec->VirtualAddress != 0)
386  report_fatal_error("Sections with relocations should have an address of 0");
388  Ret.p = reinterpret_cast<uintptr_t>(begin);
389  return relocation_iterator(RelocationRef(Ret, this));
390 }
391 
393  const coff_section *Sec = toSec(Ref);
394  const coff_relocation *I = getFirstReloc(Sec, Data, base());
395  if (I)
396  I += getNumberOfRelocations(Sec, Data, base());
398  Ret.p = reinterpret_cast<uintptr_t>(I);
399  return relocation_iterator(RelocationRef(Ret, this));
400 }
401 
402 // Initialize the pointer to the symbol table.
403 std::error_code COFFObjectFile::initSymbolTablePtr() {
404  if (COFFHeader)
405  if (std::error_code EC = getObject(
406  SymbolTable16, Data, base() + getPointerToSymbolTable(),
408  return EC;
409 
410  if (COFFBigObjHeader)
411  if (std::error_code EC = getObject(
412  SymbolTable32, Data, base() + getPointerToSymbolTable(),
414  return EC;
415 
416  // Find string table. The first four byte of the string table contains the
417  // total size of the string table, including the size field itself. If the
418  // string table is empty, the value of the first four byte would be 4.
421  const uint8_t *StringTableAddr = base() + StringTableOffset;
422  const ulittle32_t *StringTableSizePtr;
423  if (std::error_code EC = getObject(StringTableSizePtr, Data, StringTableAddr))
424  return EC;
425  StringTableSize = *StringTableSizePtr;
426  if (std::error_code EC =
427  getObject(StringTable, Data, StringTableAddr, StringTableSize))
428  return EC;
429 
430  // Treat table sizes < 4 as empty because contrary to the PECOFF spec, some
431  // tools like cvtres write a size of 0 for an empty table instead of 4.
432  if (StringTableSize < 4)
433  StringTableSize = 4;
434 
435  // Check that the string table is null terminated if has any in it.
436  if (StringTableSize > 4 && StringTable[StringTableSize - 1] != 0)
438  return std::error_code();
439 }
440 
442  if (PE32Header)
443  return PE32Header->ImageBase;
444  else if (PE32PlusHeader)
445  return PE32PlusHeader->ImageBase;
446  // This actually comes up in practice.
447  return 0;
448 }
449 
450 // Returns the file offset for the given VA.
451 std::error_code COFFObjectFile::getVaPtr(uint64_t Addr, uintptr_t &Res) const {
452  uint64_t ImageBase = getImageBase();
453  uint64_t Rva = Addr - ImageBase;
454  assert(Rva <= UINT32_MAX);
455  return getRvaPtr((uint32_t)Rva, Res);
456 }
457 
458 // Returns the file offset for the given RVA.
459 std::error_code COFFObjectFile::getRvaPtr(uint32_t Addr, uintptr_t &Res) const {
460  for (const SectionRef &S : sections()) {
461  const coff_section *Section = getCOFFSection(S);
462  uint32_t SectionStart = Section->VirtualAddress;
463  uint32_t SectionEnd = Section->VirtualAddress + Section->VirtualSize;
464  if (SectionStart <= Addr && Addr < SectionEnd) {
465  uint32_t Offset = Addr - SectionStart;
466  Res = uintptr_t(base()) + Section->PointerToRawData + Offset;
467  return std::error_code();
468  }
469  }
471 }
472 
473 std::error_code
475  ArrayRef<uint8_t> &Contents) const {
476  for (const SectionRef &S : sections()) {
477  const coff_section *Section = getCOFFSection(S);
478  uint32_t SectionStart = Section->VirtualAddress;
479  // Check if this RVA is within the section bounds. Be careful about integer
480  // overflow.
481  uint32_t OffsetIntoSection = RVA - SectionStart;
482  if (SectionStart <= RVA && OffsetIntoSection < Section->VirtualSize &&
483  Size <= Section->VirtualSize - OffsetIntoSection) {
484  uintptr_t Begin =
485  uintptr_t(base()) + Section->PointerToRawData + OffsetIntoSection;
486  Contents =
487  ArrayRef<uint8_t>(reinterpret_cast<const uint8_t *>(Begin), Size);
488  return std::error_code();
489  }
490  }
492 }
493 
494 // Returns hint and name fields, assuming \p Rva is pointing to a Hint/Name
495 // table entry.
496 std::error_code COFFObjectFile::getHintName(uint32_t Rva, uint16_t &Hint,
497  StringRef &Name) const {
498  uintptr_t IntPtr = 0;
499  if (std::error_code EC = getRvaPtr(Rva, IntPtr))
500  return EC;
501  const uint8_t *Ptr = reinterpret_cast<const uint8_t *>(IntPtr);
502  Hint = *reinterpret_cast<const ulittle16_t *>(Ptr);
503  Name = StringRef(reinterpret_cast<const char *>(Ptr + 2));
504  return std::error_code();
505 }
506 
507 std::error_code
509  const codeview::DebugInfo *&PDBInfo,
510  StringRef &PDBFileName) const {
511  ArrayRef<uint8_t> InfoBytes;
512  if (std::error_code EC = getRvaAndSizeAsBytes(
513  DebugDir->AddressOfRawData, DebugDir->SizeOfData, InfoBytes))
514  return EC;
515  if (InfoBytes.size() < sizeof(*PDBInfo) + 1)
517  PDBInfo = reinterpret_cast<const codeview::DebugInfo *>(InfoBytes.data());
518  InfoBytes = InfoBytes.drop_front(sizeof(*PDBInfo));
519  PDBFileName = StringRef(reinterpret_cast<const char *>(InfoBytes.data()),
520  InfoBytes.size());
521  // Truncate the name at the first null byte. Ignore any padding.
522  PDBFileName = PDBFileName.split('\0').first;
523  return std::error_code();
524 }
525 
526 std::error_code
528  StringRef &PDBFileName) const {
529  for (const debug_directory &D : debug_directories())
531  return getDebugPDBInfo(&D, PDBInfo, PDBFileName);
532  // If we get here, there is no PDB info to return.
533  PDBInfo = nullptr;
534  PDBFileName = StringRef();
535  return std::error_code();
536 }
537 
538 // Find the import table.
539 std::error_code COFFObjectFile::initImportTablePtr() {
540  // First, we get the RVA of the import table. If the file lacks a pointer to
541  // the import table, do nothing.
542  const data_directory *DataEntry;
543  if (getDataDirectory(COFF::IMPORT_TABLE, DataEntry))
544  return std::error_code();
545 
546  // Do nothing if the pointer to import table is NULL.
547  if (DataEntry->RelativeVirtualAddress == 0)
548  return std::error_code();
549 
550  uint32_t ImportTableRva = DataEntry->RelativeVirtualAddress;
551 
552  // Find the section that contains the RVA. This is needed because the RVA is
553  // the import table's memory address which is different from its file offset.
554  uintptr_t IntPtr = 0;
555  if (std::error_code EC = getRvaPtr(ImportTableRva, IntPtr))
556  return EC;
557  if (std::error_code EC = checkOffset(Data, IntPtr, DataEntry->Size))
558  return EC;
559  ImportDirectory = reinterpret_cast<
560  const coff_import_directory_table_entry *>(IntPtr);
561  return std::error_code();
562 }
563 
564 // Initializes DelayImportDirectory and NumberOfDelayImportDirectory.
565 std::error_code COFFObjectFile::initDelayImportTablePtr() {
566  const data_directory *DataEntry;
568  return std::error_code();
569  if (DataEntry->RelativeVirtualAddress == 0)
570  return std::error_code();
571 
572  uint32_t RVA = DataEntry->RelativeVirtualAddress;
573  NumberOfDelayImportDirectory = DataEntry->Size /
575 
576  uintptr_t IntPtr = 0;
577  if (std::error_code EC = getRvaPtr(RVA, IntPtr))
578  return EC;
579  DelayImportDirectory = reinterpret_cast<
580  const delay_import_directory_table_entry *>(IntPtr);
581  return std::error_code();
582 }
583 
584 // Find the export table.
585 std::error_code COFFObjectFile::initExportTablePtr() {
586  // First, we get the RVA of the export table. If the file lacks a pointer to
587  // the export table, do nothing.
588  const data_directory *DataEntry;
589  if (getDataDirectory(COFF::EXPORT_TABLE, DataEntry))
590  return std::error_code();
591 
592  // Do nothing if the pointer to export table is NULL.
593  if (DataEntry->RelativeVirtualAddress == 0)
594  return std::error_code();
595 
596  uint32_t ExportTableRva = DataEntry->RelativeVirtualAddress;
597  uintptr_t IntPtr = 0;
598  if (std::error_code EC = getRvaPtr(ExportTableRva, IntPtr))
599  return EC;
600  ExportDirectory =
601  reinterpret_cast<const export_directory_table_entry *>(IntPtr);
602  return std::error_code();
603 }
604 
605 std::error_code COFFObjectFile::initBaseRelocPtr() {
606  const data_directory *DataEntry;
608  return std::error_code();
609  if (DataEntry->RelativeVirtualAddress == 0)
610  return std::error_code();
611 
612  uintptr_t IntPtr = 0;
613  if (std::error_code EC = getRvaPtr(DataEntry->RelativeVirtualAddress, IntPtr))
614  return EC;
615  BaseRelocHeader = reinterpret_cast<const coff_base_reloc_block_header *>(
616  IntPtr);
617  BaseRelocEnd = reinterpret_cast<coff_base_reloc_block_header *>(
618  IntPtr + DataEntry->Size);
619  return std::error_code();
620 }
621 
622 std::error_code COFFObjectFile::initDebugDirectoryPtr() {
623  // Get the RVA of the debug directory. Do nothing if it does not exist.
624  const data_directory *DataEntry;
625  if (getDataDirectory(COFF::DEBUG_DIRECTORY, DataEntry))
626  return std::error_code();
627 
628  // Do nothing if the RVA is NULL.
629  if (DataEntry->RelativeVirtualAddress == 0)
630  return std::error_code();
631 
632  // Check that the size is a multiple of the entry size.
633  if (DataEntry->Size % sizeof(debug_directory) != 0)
635 
636  uintptr_t IntPtr = 0;
637  if (std::error_code EC = getRvaPtr(DataEntry->RelativeVirtualAddress, IntPtr))
638  return EC;
639  DebugDirectoryBegin = reinterpret_cast<const debug_directory *>(IntPtr);
640  if (std::error_code EC = getRvaPtr(
641  DataEntry->RelativeVirtualAddress + DataEntry->Size, IntPtr))
642  return EC;
643  DebugDirectoryEnd = reinterpret_cast<const debug_directory *>(IntPtr);
644  return std::error_code();
645 }
646 
647 std::error_code COFFObjectFile::initLoadConfigPtr() {
648  // Get the RVA of the debug directory. Do nothing if it does not exist.
649  const data_directory *DataEntry;
651  return std::error_code();
652 
653  // Do nothing if the RVA is NULL.
654  if (DataEntry->RelativeVirtualAddress == 0)
655  return std::error_code();
656  uintptr_t IntPtr = 0;
657  if (std::error_code EC = getRvaPtr(DataEntry->RelativeVirtualAddress, IntPtr))
658  return EC;
659 
660  LoadConfig = (const void *)IntPtr;
661  return std::error_code();
662 }
663 
665  : ObjectFile(Binary::ID_COFF, Object), COFFHeader(nullptr),
666  COFFBigObjHeader(nullptr), PE32Header(nullptr), PE32PlusHeader(nullptr),
667  DataDirectory(nullptr), SectionTable(nullptr), SymbolTable16(nullptr),
668  SymbolTable32(nullptr), StringTable(nullptr), StringTableSize(0),
669  ImportDirectory(nullptr),
670  DelayImportDirectory(nullptr), NumberOfDelayImportDirectory(0),
671  ExportDirectory(nullptr), BaseRelocHeader(nullptr), BaseRelocEnd(nullptr),
672  DebugDirectoryBegin(nullptr), DebugDirectoryEnd(nullptr) {
673  // Check that we at least have enough room for a header.
674  if (!checkSize(Data, EC, sizeof(coff_file_header)))
675  return;
676 
677  // The current location in the file where we are looking at.
678  uint64_t CurPtr = 0;
679 
680  // PE header is optional and is present only in executables. If it exists,
681  // it is placed right after COFF header.
682  bool HasPEHeader = false;
683 
684  // Check if this is a PE/COFF file.
685  if (checkSize(Data, EC, sizeof(dos_header) + sizeof(COFF::PEMagic))) {
686  // PE/COFF, seek through MS-DOS compatibility stub and 4-byte
687  // PE signature to find 'normal' COFF header.
688  const auto *DH = reinterpret_cast<const dos_header *>(base());
689  if (DH->Magic[0] == 'M' && DH->Magic[1] == 'Z') {
690  CurPtr = DH->AddressOfNewExeHeader;
691  // Check the PE magic bytes. ("PE\0\0")
692  if (memcmp(base() + CurPtr, COFF::PEMagic, sizeof(COFF::PEMagic)) != 0) {
694  return;
695  }
696  CurPtr += sizeof(COFF::PEMagic); // Skip the PE magic bytes.
697  HasPEHeader = true;
698  }
699  }
700 
701  if ((EC = getObject(COFFHeader, Data, base() + CurPtr)))
702  return;
703 
704  // It might be a bigobj file, let's check. Note that COFF bigobj and COFF
705  // import libraries share a common prefix but bigobj is more restrictive.
706  if (!HasPEHeader && COFFHeader->Machine == COFF::IMAGE_FILE_MACHINE_UNKNOWN &&
707  COFFHeader->NumberOfSections == uint16_t(0xffff) &&
708  checkSize(Data, EC, sizeof(coff_bigobj_file_header))) {
709  if ((EC = getObject(COFFBigObjHeader, Data, base() + CurPtr)))
710  return;
711 
712  // Verify that we are dealing with bigobj.
713  if (COFFBigObjHeader->Version >= COFF::BigObjHeader::MinBigObjectVersion &&
714  std::memcmp(COFFBigObjHeader->UUID, COFF::BigObjMagic,
715  sizeof(COFF::BigObjMagic)) == 0) {
716  COFFHeader = nullptr;
717  CurPtr += sizeof(coff_bigobj_file_header);
718  } else {
719  // It's not a bigobj.
720  COFFBigObjHeader = nullptr;
721  }
722  }
723  if (COFFHeader) {
724  // The prior checkSize call may have failed. This isn't a hard error
725  // because we were just trying to sniff out bigobj.
726  EC = std::error_code();
727  CurPtr += sizeof(coff_file_header);
728 
729  if (COFFHeader->isImportLibrary())
730  return;
731  }
732 
733  if (HasPEHeader) {
734  const pe32_header *Header;
735  if ((EC = getObject(Header, Data, base() + CurPtr)))
736  return;
737 
738  const uint8_t *DataDirAddr;
739  uint64_t DataDirSize;
740  if (Header->Magic == COFF::PE32Header::PE32) {
741  PE32Header = Header;
742  DataDirAddr = base() + CurPtr + sizeof(pe32_header);
743  DataDirSize = sizeof(data_directory) * PE32Header->NumberOfRvaAndSize;
744  } else if (Header->Magic == COFF::PE32Header::PE32_PLUS) {
745  PE32PlusHeader = reinterpret_cast<const pe32plus_header *>(Header);
746  DataDirAddr = base() + CurPtr + sizeof(pe32plus_header);
747  DataDirSize = sizeof(data_directory) * PE32PlusHeader->NumberOfRvaAndSize;
748  } else {
749  // It's neither PE32 nor PE32+.
751  return;
752  }
753  if ((EC = getObject(DataDirectory, Data, DataDirAddr, DataDirSize)))
754  return;
755  }
756 
757  if (COFFHeader)
758  CurPtr += COFFHeader->SizeOfOptionalHeader;
759 
760  if ((EC = getObject(SectionTable, Data, base() + CurPtr,
761  (uint64_t)getNumberOfSections() * sizeof(coff_section))))
762  return;
763 
764  // Initialize the pointer to the symbol table.
765  if (getPointerToSymbolTable() != 0) {
766  if ((EC = initSymbolTablePtr())) {
767  SymbolTable16 = nullptr;
768  SymbolTable32 = nullptr;
769  StringTable = nullptr;
770  StringTableSize = 0;
771  }
772  } else {
773  // We had better not have any symbols if we don't have a symbol table.
774  if (getNumberOfSymbols() != 0) {
776  return;
777  }
778  }
779 
780  // Initialize the pointer to the beginning of the import table.
781  if ((EC = initImportTablePtr()))
782  return;
783  if ((EC = initDelayImportTablePtr()))
784  return;
785 
786  // Initialize the pointer to the export table.
787  if ((EC = initExportTablePtr()))
788  return;
789 
790  // Initialize the pointer to the base relocation table.
791  if ((EC = initBaseRelocPtr()))
792  return;
793 
794  // Initialize the pointer to the export table.
795  if ((EC = initDebugDirectoryPtr()))
796  return;
797 
798  if ((EC = initLoadConfigPtr()))
799  return;
800 
801  EC = std::error_code();
802 }
803 
806  Ret.p = getSymbolTable();
807  return basic_symbol_iterator(SymbolRef(Ret, this));
808 }
809 
811  // The symbol table ends where the string table begins.
813  Ret.p = reinterpret_cast<uintptr_t>(StringTable);
814  return basic_symbol_iterator(SymbolRef(Ret, this));
815 }
816 
818  if (!ImportDirectory)
819  return import_directory_end();
820  if (ImportDirectory->isNull())
821  return import_directory_end();
823  ImportDirectoryEntryRef(ImportDirectory, 0, this));
824 }
825 
828  ImportDirectoryEntryRef(nullptr, -1, this));
829 }
830 
834  DelayImportDirectoryEntryRef(DelayImportDirectory, 0, this));
835 }
836 
841  DelayImportDirectory, NumberOfDelayImportDirectory, this));
842 }
843 
846  ExportDirectoryEntryRef(ExportDirectory, 0, this));
847 }
848 
850  if (!ExportDirectory)
851  return export_directory_iterator(ExportDirectoryEntryRef(nullptr, 0, this));
852  ExportDirectoryEntryRef Ref(ExportDirectory,
853  ExportDirectory->AddressTableEntries, this);
854  return export_directory_iterator(Ref);
855 }
856 
859  Ret.p = reinterpret_cast<uintptr_t>(SectionTable);
860  return section_iterator(SectionRef(Ret, this));
861 }
862 
865  int NumSections =
866  COFFHeader && COFFHeader->isImportLibrary() ? 0 : getNumberOfSections();
867  Ret.p = reinterpret_cast<uintptr_t>(SectionTable + NumSections);
868  return section_iterator(SectionRef(Ret, this));
869 }
870 
872  return base_reloc_iterator(BaseRelocRef(BaseRelocHeader, this));
873 }
874 
876  return base_reloc_iterator(BaseRelocRef(BaseRelocEnd, this));
877 }
878 
880  return getArch() == Triple::x86_64 || getArch() == Triple::aarch64 ? 8 : 4;
881 }
882 
884  switch(getMachine()) {
886  return "COFF-i386";
888  return "COFF-x86-64";
890  return "COFF-ARM";
892  return "COFF-ARM64";
893  default:
894  return "COFF-<unknown arch>";
895  }
896 }
897 
898 unsigned COFFObjectFile::getArch() const {
899  switch (getMachine()) {
901  return Triple::x86;
903  return Triple::x86_64;
905  return Triple::thumb;
907  return Triple::aarch64;
908  default:
909  return Triple::UnknownArch;
910  }
911 }
912 
916 }
917 
922 }
923 
927 }
928 
931 }
932 
933 std::error_code COFFObjectFile::getPE32Header(const pe32_header *&Res) const {
934  Res = PE32Header;
935  return std::error_code();
936 }
937 
938 std::error_code
940  Res = PE32PlusHeader;
941  return std::error_code();
942 }
943 
944 std::error_code
946  const data_directory *&Res) const {
947  // Error if if there's no data directory or the index is out of range.
948  if (!DataDirectory) {
949  Res = nullptr;
951  }
952  assert(PE32Header || PE32PlusHeader);
953  uint32_t NumEnt = PE32Header ? PE32Header->NumberOfRvaAndSize
954  : PE32PlusHeader->NumberOfRvaAndSize;
955  if (Index >= NumEnt) {
956  Res = nullptr;
958  }
959  Res = &DataDirectory[Index];
960  return std::error_code();
961 }
962 
963 std::error_code COFFObjectFile::getSection(int32_t Index,
964  const coff_section *&Result) const {
965  Result = nullptr;
967  return std::error_code();
968  if (static_cast<uint32_t>(Index) <= getNumberOfSections()) {
969  // We already verified the section table data, so no need to check again.
970  Result = SectionTable + (Index - 1);
971  return std::error_code();
972  }
974 }
975 
976 std::error_code COFFObjectFile::getString(uint32_t Offset,
977  StringRef &Result) const {
978  if (StringTableSize <= 4)
979  // Tried to get a string from an empty string table.
981  if (Offset >= StringTableSize)
983  Result = StringRef(StringTable + Offset);
984  return std::error_code();
985 }
986 
988  StringRef &Res) const {
989  return getSymbolName(Symbol.getGeneric(), Res);
990 }
991 
993  StringRef &Res) const {
994  // Check for string table entry. First 4 bytes are 0.
995  if (Symbol->Name.Offset.Zeroes == 0) {
996  if (std::error_code EC = getString(Symbol->Name.Offset.Offset, Res))
997  return EC;
998  return std::error_code();
999  }
1000 
1001  if (Symbol->Name.ShortName[COFF::NameSize - 1] == 0)
1002  // Null terminated, let ::strlen figure out the length.
1003  Res = StringRef(Symbol->Name.ShortName);
1004  else
1005  // Not null terminated, use all 8 bytes.
1006  Res = StringRef(Symbol->Name.ShortName, COFF::NameSize);
1007  return std::error_code();
1008 }
1009 
1012  const uint8_t *Aux = nullptr;
1013 
1014  size_t SymbolSize = getSymbolTableEntrySize();
1015  if (Symbol.getNumberOfAuxSymbols() > 0) {
1016  // AUX data comes immediately after the symbol in COFF
1017  Aux = reinterpret_cast<const uint8_t *>(Symbol.getRawPtr()) + SymbolSize;
1018 #ifndef NDEBUG
1019  // Verify that the Aux symbol points to a valid entry in the symbol table.
1020  uintptr_t Offset = uintptr_t(Aux) - uintptr_t(base());
1021  if (Offset < getPointerToSymbolTable() ||
1022  Offset >=
1023  getPointerToSymbolTable() + (getNumberOfSymbols() * SymbolSize))
1024  report_fatal_error("Aux Symbol data was outside of symbol table.");
1025 
1026  assert((Offset - getPointerToSymbolTable()) % SymbolSize == 0 &&
1027  "Aux Symbol data did not point to the beginning of a symbol");
1028 #endif
1029  }
1030  return makeArrayRef(Aux, Symbol.getNumberOfAuxSymbols() * SymbolSize);
1031 }
1032 
1034  StringRef &Res) const {
1035  StringRef Name;
1036  if (Sec->Name[COFF::NameSize - 1] == 0)
1037  // Null terminated, let ::strlen figure out the length.
1038  Name = Sec->Name;
1039  else
1040  // Not null terminated, use all 8 bytes.
1041  Name = StringRef(Sec->Name, COFF::NameSize);
1042 
1043  // Check for string table entry. First byte is '/'.
1044  if (Name.startswith("/")) {
1045  uint32_t Offset;
1046  if (Name.startswith("//")) {
1047  if (decodeBase64StringEntry(Name.substr(2), Offset))
1049  } else {
1050  if (Name.substr(1).getAsInteger(10, Offset))
1052  }
1053  if (std::error_code EC = getString(Offset, Name))
1054  return EC;
1055  }
1056 
1057  Res = Name;
1058  return std::error_code();
1059 }
1060 
1061 uint64_t COFFObjectFile::getSectionSize(const coff_section *Sec) const {
1062  // SizeOfRawData and VirtualSize change what they represent depending on
1063  // whether or not we have an executable image.
1064  //
1065  // For object files, SizeOfRawData contains the size of section's data;
1066  // VirtualSize should be zero but isn't due to buggy COFF writers.
1067  //
1068  // For executables, SizeOfRawData *must* be a multiple of FileAlignment; the
1069  // actual section size is in VirtualSize. It is possible for VirtualSize to
1070  // be greater than SizeOfRawData; the contents past that point should be
1071  // considered to be zero.
1072  if (getDOSHeader())
1073  return std::min(Sec->VirtualSize, Sec->SizeOfRawData);
1074  return Sec->SizeOfRawData;
1075 }
1076 
1077 std::error_code
1079  ArrayRef<uint8_t> &Res) const {
1080  // In COFF, a virtual section won't have any in-file
1081  // content, so the file pointer to the content will be zero.
1082  if (Sec->PointerToRawData == 0)
1083  return std::error_code();
1084  // The only thing that we need to verify is that the contents is contained
1085  // within the file bounds. We don't need to make sure it doesn't cover other
1086  // data, as there's nothing that says that is not allowed.
1087  uintptr_t ConStart = uintptr_t(base()) + Sec->PointerToRawData;
1089  if (checkOffset(Data, ConStart, SectionSize))
1091  Res = makeArrayRef(reinterpret_cast<const uint8_t *>(ConStart), SectionSize);
1092  return std::error_code();
1093 }
1094 
1095 const coff_relocation *COFFObjectFile::toRel(DataRefImpl Rel) const {
1096  return reinterpret_cast<const coff_relocation*>(Rel.p);
1097 }
1098 
1100  Rel.p = reinterpret_cast<uintptr_t>(
1101  reinterpret_cast<const coff_relocation*>(Rel.p) + 1);
1102 }
1103 
1105  const coff_relocation *R = toRel(Rel);
1106  return R->VirtualAddress;
1107 }
1108 
1110  const coff_relocation *R = toRel(Rel);
1111  DataRefImpl Ref;
1113  return symbol_end();
1114  if (SymbolTable16)
1115  Ref.p = reinterpret_cast<uintptr_t>(SymbolTable16 + R->SymbolTableIndex);
1116  else if (SymbolTable32)
1117  Ref.p = reinterpret_cast<uintptr_t>(SymbolTable32 + R->SymbolTableIndex);
1118  else
1119  llvm_unreachable("no symbol table pointer!");
1120  return symbol_iterator(SymbolRef(Ref, this));
1121 }
1122 
1124  const coff_relocation* R = toRel(Rel);
1125  return R->Type;
1126 }
1127 
1128 const coff_section *
1130  return toSec(Section.getRawDataRefImpl());
1131 }
1132 
1134  if (SymbolTable16)
1135  return toSymb<coff_symbol16>(Ref);
1136  if (SymbolTable32)
1137  return toSymb<coff_symbol32>(Ref);
1138  llvm_unreachable("no symbol table pointer!");
1139 }
1140 
1142  return getCOFFSymbol(Symbol.getRawDataRefImpl());
1143 }
1144 
1145 const coff_relocation *
1147  return toRel(Reloc.getRawDataRefImpl());
1148 }
1149 
1152  const coff_relocation *I = getFirstReloc(Sec, Data, base());
1153  const coff_relocation *E = I;
1154  if (I)
1155  E += getNumberOfRelocations(Sec, Data, base());
1156  return make_range(I, E);
1157 }
1158 
1159 #define LLVM_COFF_SWITCH_RELOC_TYPE_NAME(reloc_type) \
1160  case COFF::reloc_type: \
1161  Res = #reloc_type; \
1162  break;
1163 
1165  DataRefImpl Rel, SmallVectorImpl<char> &Result) const {
1166  const coff_relocation *Reloc = toRel(Rel);
1167  StringRef Res;
1168  switch (getMachine()) {
1170  switch (Reloc->Type) {
1188  default:
1189  Res = "Unknown";
1190  }
1191  break;
1193  switch (Reloc->Type) {
1209  default:
1210  Res = "Unknown";
1211  }
1212  break;
1214  switch (Reloc->Type) {
1232  default:
1233  Res = "Unknown";
1234  }
1235  break;
1237  switch (Reloc->Type) {
1249  default:
1250  Res = "Unknown";
1251  }
1252  break;
1253  default:
1254  Res = "Unknown";
1255  }
1256  Result.append(Res.begin(), Res.end());
1257 }
1258 
1259 #undef LLVM_COFF_SWITCH_RELOC_TYPE_NAME
1260 
1262  return !DataDirectory;
1263 }
1264 
1267  return ImportTable == Other.ImportTable && Index == Other.Index;
1268 }
1269 
1271  ++Index;
1272  if (ImportTable[Index].isNull()) {
1273  Index = -1;
1274  ImportTable = nullptr;
1275  }
1276 }
1277 
1279  const coff_import_directory_table_entry *&Result) const {
1280  return getObject(Result, OwningObject->Data, ImportTable + Index);
1281 }
1282 
1285  uintptr_t Ptr, int Index) {
1286  if (Object->getBytesInAddress() == 4) {
1287  auto *P = reinterpret_cast<const import_lookup_table_entry32 *>(Ptr);
1288  return imported_symbol_iterator(ImportedSymbolRef(P, Index, Object));
1289  }
1290  auto *P = reinterpret_cast<const import_lookup_table_entry64 *>(Ptr);
1291  return imported_symbol_iterator(ImportedSymbolRef(P, Index, Object));
1292 }
1293 
1296  uintptr_t IntPtr = 0;
1297  Object->getRvaPtr(RVA, IntPtr);
1298  return makeImportedSymbolIterator(Object, IntPtr, 0);
1299 }
1300 
1303  uintptr_t IntPtr = 0;
1304  Object->getRvaPtr(RVA, IntPtr);
1305  // Forward the pointer to the last entry which is null.
1306  int Index = 0;
1307  if (Object->getBytesInAddress() == 4) {
1308  auto *Entry = reinterpret_cast<ulittle32_t *>(IntPtr);
1309  while (*Entry++)
1310  ++Index;
1311  } else {
1312  auto *Entry = reinterpret_cast<ulittle64_t *>(IntPtr);
1313  while (*Entry++)
1314  ++Index;
1315  }
1316  return makeImportedSymbolIterator(Object, IntPtr, Index);
1317 }
1318 
1321  return importedSymbolBegin(ImportTable[Index].ImportAddressTableRVA,
1322  OwningObject);
1323 }
1324 
1327  return importedSymbolEnd(ImportTable[Index].ImportAddressTableRVA,
1328  OwningObject);
1329 }
1330 
1333  return make_range(imported_symbol_begin(), imported_symbol_end());
1334 }
1335 
1337  return importedSymbolBegin(ImportTable[Index].ImportLookupTableRVA,
1338  OwningObject);
1339 }
1340 
1342  return importedSymbolEnd(ImportTable[Index].ImportLookupTableRVA,
1343  OwningObject);
1344 }
1345 
1348  return make_range(lookup_table_begin(), lookup_table_end());
1349 }
1350 
1351 std::error_code ImportDirectoryEntryRef::getName(StringRef &Result) const {
1352  uintptr_t IntPtr = 0;
1353  if (std::error_code EC =
1354  OwningObject->getRvaPtr(ImportTable[Index].NameRVA, IntPtr))
1355  return EC;
1356  Result = StringRef(reinterpret_cast<const char *>(IntPtr));
1357  return std::error_code();
1358 }
1359 
1360 std::error_code
1362  Result = ImportTable[Index].ImportLookupTableRVA;
1363  return std::error_code();
1364 }
1365 
1366 std::error_code
1368  Result = ImportTable[Index].ImportAddressTableRVA;
1369  return std::error_code();
1370 }
1371 
1374  return Table == Other.Table && Index == Other.Index;
1375 }
1376 
1378  ++Index;
1379 }
1380 
1383  return importedSymbolBegin(Table[Index].DelayImportNameTable,
1384  OwningObject);
1385 }
1386 
1389  return importedSymbolEnd(Table[Index].DelayImportNameTable,
1390  OwningObject);
1391 }
1392 
1395  return make_range(imported_symbol_begin(), imported_symbol_end());
1396 }
1397 
1398 std::error_code DelayImportDirectoryEntryRef::getName(StringRef &Result) const {
1399  uintptr_t IntPtr = 0;
1400  if (std::error_code EC = OwningObject->getRvaPtr(Table[Index].Name, IntPtr))
1401  return EC;
1402  Result = StringRef(reinterpret_cast<const char *>(IntPtr));
1403  return std::error_code();
1404 }
1405 
1406 std::error_code DelayImportDirectoryEntryRef::
1408  Result = Table;
1409  return std::error_code();
1410 }
1411 
1412 std::error_code DelayImportDirectoryEntryRef::
1413 getImportAddress(int AddrIndex, uint64_t &Result) const {
1414  uint32_t RVA = Table[Index].DelayImportAddressTable +
1415  AddrIndex * (OwningObject->is64() ? 8 : 4);
1416  uintptr_t IntPtr = 0;
1417  if (std::error_code EC = OwningObject->getRvaPtr(RVA, IntPtr))
1418  return EC;
1419  if (OwningObject->is64())
1420  Result = *reinterpret_cast<const ulittle64_t *>(IntPtr);
1421  else
1422  Result = *reinterpret_cast<const ulittle32_t *>(IntPtr);
1423  return std::error_code();
1424 }
1425 
1428  return ExportTable == Other.ExportTable && Index == Other.Index;
1429 }
1430 
1432  ++Index;
1433 }
1434 
1435 // Returns the name of the current export symbol. If the symbol is exported only
1436 // by ordinal, the empty string is set as a result.
1437 std::error_code ExportDirectoryEntryRef::getDllName(StringRef &Result) const {
1438  uintptr_t IntPtr = 0;
1439  if (std::error_code EC =
1440  OwningObject->getRvaPtr(ExportTable->NameRVA, IntPtr))
1441  return EC;
1442  Result = StringRef(reinterpret_cast<const char *>(IntPtr));
1443  return std::error_code();
1444 }
1445 
1446 // Returns the starting ordinal number.
1447 std::error_code
1449  Result = ExportTable->OrdinalBase;
1450  return std::error_code();
1451 }
1452 
1453 // Returns the export ordinal of the current export symbol.
1454 std::error_code ExportDirectoryEntryRef::getOrdinal(uint32_t &Result) const {
1455  Result = ExportTable->OrdinalBase + Index;
1456  return std::error_code();
1457 }
1458 
1459 // Returns the address of the current export symbol.
1460 std::error_code ExportDirectoryEntryRef::getExportRVA(uint32_t &Result) const {
1461  uintptr_t IntPtr = 0;
1462  if (std::error_code EC =
1463  OwningObject->getRvaPtr(ExportTable->ExportAddressTableRVA, IntPtr))
1464  return EC;
1465  const export_address_table_entry *entry =
1466  reinterpret_cast<const export_address_table_entry *>(IntPtr);
1467  Result = entry[Index].ExportRVA;
1468  return std::error_code();
1469 }
1470 
1471 // Returns the name of the current export symbol. If the symbol is exported only
1472 // by ordinal, the empty string is set as a result.
1473 std::error_code
1475  uintptr_t IntPtr = 0;
1476  if (std::error_code EC =
1477  OwningObject->getRvaPtr(ExportTable->OrdinalTableRVA, IntPtr))
1478  return EC;
1479  const ulittle16_t *Start = reinterpret_cast<const ulittle16_t *>(IntPtr);
1480 
1481  uint32_t NumEntries = ExportTable->NumberOfNamePointers;
1482  int Offset = 0;
1483  for (const ulittle16_t *I = Start, *E = Start + NumEntries;
1484  I < E; ++I, ++Offset) {
1485  if (*I != Index)
1486  continue;
1487  if (std::error_code EC =
1488  OwningObject->getRvaPtr(ExportTable->NamePointerRVA, IntPtr))
1489  return EC;
1490  const ulittle32_t *NamePtr = reinterpret_cast<const ulittle32_t *>(IntPtr);
1491  if (std::error_code EC = OwningObject->getRvaPtr(NamePtr[Offset], IntPtr))
1492  return EC;
1493  Result = StringRef(reinterpret_cast<const char *>(IntPtr));
1494  return std::error_code();
1495  }
1496  Result = "";
1497  return std::error_code();
1498 }
1499 
1500 std::error_code ExportDirectoryEntryRef::isForwarder(bool &Result) const {
1501  const data_directory *DataEntry;
1502  if (auto EC = OwningObject->getDataDirectory(COFF::EXPORT_TABLE, DataEntry))
1503  return EC;
1504  uint32_t RVA;
1505  if (auto EC = getExportRVA(RVA))
1506  return EC;
1507  uint32_t Begin = DataEntry->RelativeVirtualAddress;
1508  uint32_t End = DataEntry->RelativeVirtualAddress + DataEntry->Size;
1509  Result = (Begin <= RVA && RVA < End);
1510  return std::error_code();
1511 }
1512 
1513 std::error_code ExportDirectoryEntryRef::getForwardTo(StringRef &Result) const {
1514  uint32_t RVA;
1515  if (auto EC = getExportRVA(RVA))
1516  return EC;
1517  uintptr_t IntPtr = 0;
1518  if (auto EC = OwningObject->getRvaPtr(RVA, IntPtr))
1519  return EC;
1520  Result = StringRef(reinterpret_cast<const char *>(IntPtr));
1521  return std::error_code();
1522 }
1523 
1525 operator==(const ImportedSymbolRef &Other) const {
1526  return Entry32 == Other.Entry32 && Entry64 == Other.Entry64
1527  && Index == Other.Index;
1528 }
1529 
1531  ++Index;
1532 }
1533 
1534 std::error_code
1536  uint32_t RVA;
1537  if (Entry32) {
1538  // If a symbol is imported only by ordinal, it has no name.
1539  if (Entry32[Index].isOrdinal())
1540  return std::error_code();
1541  RVA = Entry32[Index].getHintNameRVA();
1542  } else {
1543  if (Entry64[Index].isOrdinal())
1544  return std::error_code();
1545  RVA = Entry64[Index].getHintNameRVA();
1546  }
1547  uintptr_t IntPtr = 0;
1548  if (std::error_code EC = OwningObject->getRvaPtr(RVA, IntPtr))
1549  return EC;
1550  // +2 because the first two bytes is hint.
1551  Result = StringRef(reinterpret_cast<const char *>(IntPtr + 2));
1552  return std::error_code();
1553 }
1554 
1555 std::error_code ImportedSymbolRef::isOrdinal(bool &Result) const {
1556  if (Entry32)
1557  Result = Entry32[Index].isOrdinal();
1558  else
1559  Result = Entry64[Index].isOrdinal();
1560  return std::error_code();
1561 }
1562 
1563 std::error_code ImportedSymbolRef::getHintNameRVA(uint32_t &Result) const {
1564  if (Entry32)
1565  Result = Entry32[Index].getHintNameRVA();
1566  else
1567  Result = Entry64[Index].getHintNameRVA();
1568  return std::error_code();
1569 }
1570 
1571 std::error_code ImportedSymbolRef::getOrdinal(uint16_t &Result) const {
1572  uint32_t RVA;
1573  if (Entry32) {
1574  if (Entry32[Index].isOrdinal()) {
1575  Result = Entry32[Index].getOrdinal();
1576  return std::error_code();
1577  }
1578  RVA = Entry32[Index].getHintNameRVA();
1579  } else {
1580  if (Entry64[Index].isOrdinal()) {
1581  Result = Entry64[Index].getOrdinal();
1582  return std::error_code();
1583  }
1584  RVA = Entry64[Index].getHintNameRVA();
1585  }
1586  uintptr_t IntPtr = 0;
1587  if (std::error_code EC = OwningObject->getRvaPtr(RVA, IntPtr))
1588  return EC;
1589  Result = *reinterpret_cast<const ulittle16_t *>(IntPtr);
1590  return std::error_code();
1591 }
1592 
1595  std::error_code EC;
1596  std::unique_ptr<COFFObjectFile> Ret(new COFFObjectFile(Object, EC));
1597  if (EC)
1598  return errorCodeToError(EC);
1599  return std::move(Ret);
1600 }
1601 
1602 bool BaseRelocRef::operator==(const BaseRelocRef &Other) const {
1603  return Header == Other.Header && Index == Other.Index;
1604 }
1605 
1607  // Header->BlockSize is the size of the current block, including the
1608  // size of the header itself.
1609  uint32_t Size = sizeof(*Header) +
1610  sizeof(coff_base_reloc_block_entry) * (Index + 1);
1611  if (Size == Header->BlockSize) {
1612  // .reloc contains a list of base relocation blocks. Each block
1613  // consists of the header followed by entries. The header contains
1614  // how many entories will follow. When we reach the end of the
1615  // current block, proceed to the next block.
1616  Header = reinterpret_cast<const coff_base_reloc_block_header *>(
1617  reinterpret_cast<const uint8_t *>(Header) + Size);
1618  Index = 0;
1619  } else {
1620  ++Index;
1621  }
1622 }
1623 
1624 std::error_code BaseRelocRef::getType(uint8_t &Type) const {
1625  auto *Entry = reinterpret_cast<const coff_base_reloc_block_entry *>(Header + 1);
1626  Type = Entry[Index].getType();
1627  return std::error_code();
1628 }
1629 
1630 std::error_code BaseRelocRef::getRVA(uint32_t &Result) const {
1631  auto *Entry = reinterpret_cast<const coff_base_reloc_block_entry *>(Header + 1);
1632  Result = Header->PageRVA + Entry[Index].getOffset();
1633  return std::error_code();
1634 }
1635 
1636 #define RETURN_IF_ERROR(E) \
1637  if (E) \
1638  return E;
1639 
1641 ResourceSectionRef::getDirStringAtOffset(uint32_t Offset) {
1642  BinaryStreamReader Reader = BinaryStreamReader(BBS);
1643  Reader.setOffset(Offset);
1644  uint16_t Length;
1645  RETURN_IF_ERROR(Reader.readInteger(Length));
1646  ArrayRef<UTF16> RawDirString;
1647  RETURN_IF_ERROR(Reader.readArray(RawDirString, Length));
1648  return RawDirString;
1649 }
1650 
1653  return getDirStringAtOffset(Entry.Identifier.getNameOffset());
1654 }
1655 
1657 ResourceSectionRef::getTableAtOffset(uint32_t Offset) {
1658  const coff_resource_dir_table *Table = nullptr;
1659 
1660  BinaryStreamReader Reader(BBS);
1661  Reader.setOffset(Offset);
1662  RETURN_IF_ERROR(Reader.readObject(Table));
1663  assert(Table != nullptr);
1664  return *Table;
1665 }
1666 
1669  return getTableAtOffset(Entry.Offset.value());
1670 }
1671 
1673  return getTableAtOffset(0);
1674 }
bool isNull() const
Definition: COFF.h:537
uint32_t getAlignment() const
Definition: COFF.h:435
bool isCommon() const
Definition: COFF.h:357
static uint32_t getNumberOfRelocations(const coff_section *Sec, MemoryBufferRef M, const uint8_t *base)
std::error_code getHintNameRVA(uint32_t &Result) const
The 64-bit PE header that follows the COFF header.
Definition: COFF.h:141
int getType() const
Definition: COFF.h:689
uint32_t getSymbolAlignment(DataRefImpl Symb) const override
GCNRegPressure max(const GCNRegPressure &P1, const GCNRegPressure &P2)
const_iterator begin(StringRef path, Style style=Style::native)
Get begin iterator over path.
Definition: Path.cpp:235
std::error_code getImportAddress(int AddrIndex, uint64_t &Result) const
section_iterator section_begin() const override
support::ulittle16_t Machine
Definition: COFF.h:77
friend class SymbolRef
Definition: ObjectFile.h:207
std::error_code getType(uint8_t &Type) const
LLVM_ATTRIBUTE_NORETURN void report_fatal_error(Error Err, bool gen_crash_diag=true)
Report a serious error, calling any installed error handler.
Definition: Error.cpp:115
Compute iterated dominance frontiers using a linear time algorithm.
Definition: AllocatorList.h:24
const coff_section * getCOFFSection(const SectionRef &Section) const
Error readInteger(T &Dest)
Read an integer of the specified endianness into Dest and update the stream&#39;s offset.
friend class SectionRef
Definition: ObjectFile.h:221
COFFObjectFile(MemoryBufferRef Object, std::error_code &EC)
uint64_t getRelocationOffset(DataRefImpl Rel) const override
support::ulittle32_t VirtualAddress
Definition: COFF.h:419
bool operator==(const DelayImportDirectoryEntryRef &Other) const
Definition: COFF.h:223
This provides a very simple, boring adaptor for a begin and end iterator into a range type...
void moveSectionNext(DataRefImpl &Sec) const override
static std::error_code getObject(const T *&Obj, MemoryBufferRef M, const void *Ptr, const uint64_t Size=sizeof(T))
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE size_t size() const
size - Get the string size.
Definition: StringRef.h:138
COFFSymbolRef getCOFFSymbol(const DataRefImpl &Ref) const
static std::error_code checkOffset(MemoryBufferRef M, uintptr_t Addr, const uint64_t Size)
Definition: Binary.h:148
export_directory_iterator export_directory_end() const
union llvm::object::coff_resource_dir_entry::@247 Identifier
Error readObject(const T *&Dest)
Get a pointer to an object of type T from the underlying stream, as if by memcpy, and store the resul...
std::error_code getOrdinal(uint32_t &Result) const
base_reloc_iterator base_reloc_end() const
void moveRelocationNext(DataRefImpl &Rel) const override
support::ulittle16_t Version
Definition: COFF.h:91
This class is the base class for all object file types.
Definition: ObjectFile.h:189
support::ulittle16_t NumberOfSections
Definition: COFF.h:78
content_iterator< DelayImportDirectoryEntryRef > delay_import_directory_iterator
Definition: COFF.h:48
uint32_t getPointerToSymbolTable() const
Definition: COFF.h:825
static const coff_relocation * getFirstReloc(const coff_section *Sec, MemoryBufferRef M, const uint8_t *Base)
iterator_range< imported_symbol_iterator > imported_symbols() const
bool isSectionDefinition() const
Definition: COFF.h:393
bool isSectionCompressed(DataRefImpl Sec) const override
const uint8_t * base() const
Definition: ObjectFile.h:195
uint8_t getNumberOfAuxSymbols() const
Definition: COFF.h:338
export_directory_iterator export_directory_begin() const
Definition: COFF.h:237
std::error_code getName(StringRef &Result) const
detail::packed_endian_specific_integral< uint16_t, little, unaligned > ulittle16_t
Definition: Endian.h:269
std::error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const override
uint64_t getSymbolValueImpl(DataRefImpl Symb) const override
std::error_code getSectionName(DataRefImpl Sec, StringRef &Res) const override
static const char BigObjMagic[]
Definition: COFF.h:39
const coff_relocation * getCOFFRelocation(const RelocationRef &Reloc) const
import_directory_iterator import_directory_begin() const
iterator_range< const debug_directory * > debug_directories() const
Definition: COFF.h:932
uint8_t getBytesInAddress() const override
The number of bytes used to represent an address in this object file format.
basic_symbol_iterator symbol_end() const override
detail::packed_endian_specific_integral< uint64_t, little, unaligned > ulittle64_t
Definition: Endian.h:273
char ShortName[COFF::NameSize]
Definition: COFF.h:272
support::ulittle64_t ImageBase
Definition: COFF.h:150
friend class ExportDirectoryEntryRef
Definition: COFF.h:735
uint64_t getSectionAlignment(DataRefImpl Sec) const override
char Name[COFF::NameSize]
Definition: COFF.h:417
ArrayRef< T > makeArrayRef(const T &OneElt)
Construct an ArrayRef from a single element.
Definition: ArrayRef.h:451
DataRefImpl getRawDataRefImpl() const
Definition: SymbolicFile.h:205
This is a value type class that represents a single relocation in the list of relocations in the obje...
Definition: ObjectFile.h:51
support::ulittle16_t SizeOfOptionalHeader
Definition: COFF.h:82
Expected< uint64_t > getSymbolAddress(DataRefImpl Symb) const override
iterator_range< base_reloc_iterator > base_relocs() const
Tagged union holding either a T or a Error.
Definition: CachePruning.h:23
static imported_symbol_iterator importedSymbolBegin(uint32_t RVA, const COFFObjectFile *Object)
bool isReservedSectionNumber(int32_t SectionNumber)
Definition: COFF.h:712
imported_symbol_iterator lookup_table_begin() const
std::error_code getRvaAndSizeAsBytes(uint32_t RVA, uint32_t Size, ArrayRef< uint8_t > &Contents) const
Given an RVA base and size, returns a valid array of bytes or an error code if the RVA and size is no...
support::ulittle32_t VirtualSize
Definition: COFF.h:418
#define LLVM_COFF_SWITCH_RELOC_TYPE_NAME(reloc_type)
content_iterator< SectionRef > section_iterator
Definition: ObjectFile.h:47
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE bool startswith(StringRef Prefix) const
Check if this string starts with the given Prefix.
Definition: StringRef.h:267
iterator_range< imported_symbol_iterator > imported_symbols() const
imported_symbol_iterator imported_symbol_end() const
Expected< SymbolRef::Type > getSymbolType(DataRefImpl Symb) const override
int32_t getSectionNumber() const
Definition: COFF.h:317
uint32_t getSymbolFlags(DataRefImpl Symb) const override
std::error_code getDllName(StringRef &Result) const
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE bool empty() const
empty - Check if the string is empty.
Definition: StringRef.h:133
uint64_t getSectionAddress(DataRefImpl Sec) const override
section_iterator_range sections() const
Definition: ObjectFile.h:273
void moveSymbolNext(DataRefImpl &Symb) const override
LLVM_NODISCARD LLVM_ATTRIBUTE_ALWAYS_INLINE StringRef substr(size_t Start, size_t N=npos) const
Return a reference to the substring from [Start, Start + N).
Definition: StringRef.h:598
uint8_t getComplexType() const
Definition: COFF.h:345
support::ulittle32_t ExportRVA
Definition: COFF.h:238
bool isRelocatableObject() const override
True if this is a relocatable object (.o/.obj).
std::error_code getRVA(uint32_t &Result) const
unsigned getArch() const override
static bool checkSize(MemoryBufferRef M, std::error_code &EC, uint64_t Size)
relocation_iterator section_rel_end(DataRefImpl Sec) const override
support::ulittle16_t Magic
Definition: COFF.h:106
std::error_code getDelayImportTable(const delay_import_directory_table_entry *&Result) const
#define P(N)
support::ulittle32_t Characteristics
Definition: COFF.h:426
base_reloc_iterator base_reloc_begin() const
std::error_code getName(StringRef &Result) const
support::ulittle32_t NumberOfRvaAndSize
Definition: COFF.h:170
Expected< section_iterator > getSymbolSection(DataRefImpl Symb) const override
content_iterator< ExportDirectoryEntryRef > export_directory_iterator
Definition: COFF.h:49
size_t getBufferSize() const
Definition: MemoryBuffer.h:176
delay_import_directory_iterator delay_import_directory_end() const
The instances of the Type class are immutable: once they are created, they are never changed...
Definition: Type.h:46
detail::packed_endian_specific_integral< uint32_t, little, unaligned > ulittle32_t
Definition: Endian.h:271
bool operator==(const BaseRelocRef &Other) const
size_t size() const
size - Get the array size.
Definition: ArrayRef.h:149
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
std::error_code getSection(int32_t index, const coff_section *&Res) const
Error errorCodeToError(std::error_code EC)
Helper for converting an std::error_code to a Error.
Definition: Error.cpp:78
const dos_header * getDOSHeader() const
Definition: COFF.h:936
content_iterator< ImportedSymbolRef > imported_symbol_iterator
Definition: COFF.h:50
The 32-bit PE header that follows the COFF header.
Definition: COFF.h:105
std::error_code getOrdinal(uint16_t &Result) const
import_lookup_table_entry< support::little64_t > import_lookup_table_entry64
Definition: COFF.h:209
std::error_code getHintName(uint32_t Rva, uint16_t &Hint, StringRef &Name) const
bool operator==(const ImportedSymbolRef &Other) const
delay_import_directory_iterator delay_import_directory_begin() const
support::ulittle32_t RelativeVirtualAddress
Definition: COFF.h:174
content_iterator< ImportDirectoryEntryRef > import_directory_iterator
Definition: COFF.h:46
Expected< StringRef > getSymbolName(DataRefImpl Symb) const override
std::error_code isForwarder(bool &Result) const
static const unsigned End
std::error_code getSymbolName(StringRef &Result) const
imported_symbol_iterator imported_symbol_begin() const
A function that returns a base type.
Definition: COFF.h:259
relocation_iterator section_rel_begin(DataRefImpl Sec) const override
const void * getRawPtr() const
Definition: COFF.h:284
support::ulittle16_t Type
Definition: COFF.h:452
std::error_code getDebugPDBInfo(const debug_directory *DebugDir, const codeview::DebugInfo *&Info, StringRef &PDBFileName) const
Get PDB information out of a codeview debug directory entry.
const coff_symbol_generic * getGeneric() const
Definition: COFF.h:288
union llvm::object::coff_symbol_generic::@246 Name
static imported_symbol_iterator makeImportedSymbolIterator(const COFFObjectFile *Object, uintptr_t Ptr, int Index)
StringTableOffset Offset
Definition: COFF.h:273
support::ulittle32_t SizeOfRawData
Definition: COFF.h:420
bool isImportLibrary() const
Definition: COFF.h:85
uint64_t getRelocationType(DataRefImpl Rel) const override
std::error_code getPE32Header(const pe32_header *&Res) const
std::error_code getOrdinalBase(uint32_t &Result) const
StringRef getFileFormatName() const override
DataRefImpl getRawDataRefImpl() const
Definition: ObjectFile.h:462
unsigned getSectionID(SectionRef Sec) const
support::ulittle32_t VirtualAddress
Definition: COFF.h:450
support::ulittle32_t SymbolTableIndex
Definition: COFF.h:451
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
const T * data() const
Definition: ArrayRef.h:146
import_directory_iterator import_directory_end() const
uint16_t getMachine() const
Definition: COFF.h:781
iterator_range< const coff_relocation * > getRelocations(const coff_section *Sec) const
Definition: COFF.h:530
friend class ImportDirectoryEntryRef
Definition: COFF.h:734
std::error_code isOrdinal(bool &Result) const
std::enable_if< std::numeric_limits< T >::is_signed, bool >::type getAsInteger(unsigned Radix, T &Result) const
Parse the current string as an integer of the specified radix.
Definition: StringRef.h:497
iterator_range< T > make_range(T x, T y)
Convenience function for iterating over sub-ranges.
imported_symbol_iterator imported_symbol_begin() const
void setOffset(uint32_t Off)
support::ulittle32_t PointerToRawData
Definition: COFF.h:421
friend class RelocationRef
Definition: ObjectFile.h:245
iterator_range< import_directory_iterator > import_directories() const
static Expected< std::unique_ptr< COFFObjectFile > > createCOFFObjectFile(MemoryBufferRef Object)
Expected< const coff_resource_dir_table & > getEntrySubDir(const coff_resource_dir_entry &Entry)
uint32_t getNumberOfSections() const
Definition: COFF.h:817
uint64_t getCommonSymbolSizeImpl(DataRefImpl Symb) const override
Expected< ArrayRef< UTF16 > > getEntryNameString(const coff_resource_dir_entry &Entry)
basic_symbol_iterator symbol_begin() const override
static bool decodeBase64StringEntry(StringRef Str, uint32_t &Result)
LLVM_NODISCARD std::pair< StringRef, StringRef > split(char Separator) const
Split into two substrings around the first occurrence of a separator character.
Definition: StringRef.h:727
Definition: COFF.h:686
bool isSectionData(DataRefImpl Sec) const override
union llvm::object::coff_resource_dir_entry::@248 Offset
uint64_t getSymbolValue(DataRefImpl Symb) const
Definition: ObjectFile.cpp:51
std::error_code getForwardTo(StringRef &Result) const
static GCRegistry::Add< StatepointGC > D("statepoint-example", "an example strategy for statepoint")
std::error_code getVaPtr(uint64_t VA, uintptr_t &Res) const
content_iterator< BasicSymbolRef > basic_symbol_iterator
Definition: SymbolicFile.h:139
The DOS compatible header at the front of all PE/COFF executables.
Definition: COFF.h:54
std::error_code getExportRVA(uint32_t &Result) const
A range adaptor for a pair of iterators.
std::error_code getRvaPtr(uint32_t Rva, uintptr_t &Res) const
section_iterator section_end() const override
support::ulittle32_t AddressOfRawData
Definition: COFF.h:185
MemoryBufferRef Data
Definition: Binary.h:37
size_t getSymbolTableEntrySize() const
Definition: COFF.h:987
support::ulittle32_t Size
Definition: COFF.h:175
std::error_code getDataDirectory(uint32_t index, const data_directory *&Res) const
This is a value type class that represents a single symbol in the list of symbols in the object file...
Definition: ObjectFile.h:128
iterator begin() const
Definition: StringRef.h:106
support::ulittle32_t ImageBase
Definition: COFF.h:115
void append(in_iter in_start, in_iter in_end)
Add the specified range to the end of the SmallVector.
Definition: SmallVector.h:398
support::ulittle32_t Zeroes
Definition: COFF.h:246
bool operator==(const ExportDirectoryEntryRef &Other) const
symbol_iterator getRelocationSymbol(DataRefImpl Rel) const override
bool isWeakExternal() const
Definition: COFF.h:367
Definition: COFF.h:693
bool isSectionText(DataRefImpl Sec) const override
Merge contiguous icmps into a memcmp
Definition: MergeICmps.cpp:649
std::error_code getImportTableEntry(const coff_import_directory_table_entry *&Result) const
ArrayRef< T > drop_front(size_t N=1) const
Drop the first N elements of the array.
Definition: ArrayRef.h:188
Expected< const coff_resource_dir_table & > getBaseTable()
void getRelocationTypeName(DataRefImpl Rel, SmallVectorImpl< char > &Result) const override
detail::packed_endian_specific_integral< int16_t, little, unaligned > little16_t
Definition: Endian.h:276
support::ulittle32_t AddressTableEntries
Definition: COFF.h:230
#define I(x, y, z)
Definition: MD5.cpp:58
iterator_range< export_directory_iterator > export_directories() const
static const char PEMagic[]
Definition: COFF.h:37
Definition: COFF.h:211
bool isAnyUndefined() const
Definition: COFF.h:381
bool isSectionVirtual(DataRefImpl Sec) const override
static imported_symbol_iterator importedSymbolEnd(uint32_t RVA, const COFFObjectFile *Object)
ArrayRef< uint8_t > getSymbolAuxData(COFFSymbolRef Symbol) const
uint64_t getSectionSize(DataRefImpl Sec) const override
iterator_range< imported_symbol_iterator > lookup_table_symbols() const
uint8_t NumberOfAuxSymbols
Definition: COFF.h:263
support::ulittle32_t SizeOfData
Definition: COFF.h:184
bool isSectionBSS(DataRefImpl Sec) const override
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
support::ulittle32_t AddressOfNewExeHeader
Definition: COFF.h:73
uintptr_t getSymbolTable() const
Definition: COFF.h:773
bool isFileRecord() const
Definition: COFF.h:385
bool isNull(StringRef S)
Definition: YAMLTraits.h:488
LLVM Value Representation.
Definition: Value.h:73
content_iterator< BaseRelocRef > base_reloc_iterator
Definition: COFF.h:51
constexpr char Size[]
Key for Kernel::Arg::Metadata::mSize.
imported_symbol_iterator imported_symbol_end() const
content_iterator< RelocationRef > relocation_iterator
Definition: ObjectFile.h:76
import_lookup_table_entry< support::little32_t > import_lookup_table_entry32
Definition: COFF.h:207
std::error_code getImportAddressTableRVA(uint32_t &Result) const
support::ulittle32_t NumberOfRvaAndSize
Definition: COFF.h:137
uint32_t getValue() const
Definition: COFF.h:315
#define RETURN_IF_ERROR(E)
Provides read only access to a subclass of BinaryStream.
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:49
bool operator==(const ImportDirectoryEntryRef &Other) const
std::error_code getImportLookupTableRVA(uint32_t &Result) const
std::error_code getPE32PlusHeader(const pe32plus_header *&Res) const
bool isExternal() const
Definition: COFF.h:353
iterator end() const
Definition: StringRef.h:108
imported_symbol_iterator lookup_table_end() const
uint64_t getSectionIndex(DataRefImpl Sec) const override
unsigned getSymbolSectionID(SymbolRef Sym) const
DataRefImpl getRawDataRefImpl() const
Definition: ObjectFile.h:500
Error readArray(ArrayRef< T > &Array, uint32_t NumElements)
Get a reference to a NumElements element array of objects of type T from the underlying stream as if ...
std::error_code getSymbolName(StringRef &Result) const
iterator_range< delay_import_directory_iterator > delay_import_directories() const
This is a value type class that represents a single section in the list of sections in the object fil...
Definition: ObjectFile.h:80
uint64_t PowerOf2Ceil(uint64_t A)
Returns the power of two which is greater than or equal to the given value.
Definition: MathExtras.h:651
uint32_t getNumberOfSymbols() const
Definition: COFF.h:842
support::ulittle32_t Offset
Definition: COFF.h:247