LLVM  15.0.0git
ELF.cpp
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1 //===- ELF.cpp - ELF object file implementation ---------------------------===//
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 "llvm/Object/ELF.h"
10 #include "llvm/BinaryFormat/ELF.h"
12 
13 using namespace llvm;
14 using namespace object;
15 
16 #define STRINGIFY_ENUM_CASE(ns, name) \
17  case ns::name: \
18  return #name;
19 
20 #define ELF_RELOC(name, value) STRINGIFY_ENUM_CASE(ELF, name)
21 
23  uint32_t Type) {
24  switch (Machine) {
25  case ELF::EM_68K:
26  switch (Type) {
27 #include "llvm/BinaryFormat/ELFRelocs/M68k.def"
28  default:
29  break;
30  }
31  break;
32  case ELF::EM_X86_64:
33  switch (Type) {
34 #include "llvm/BinaryFormat/ELFRelocs/x86_64.def"
35  default:
36  break;
37  }
38  break;
39  case ELF::EM_386:
40  case ELF::EM_IAMCU:
41  switch (Type) {
42 #include "llvm/BinaryFormat/ELFRelocs/i386.def"
43  default:
44  break;
45  }
46  break;
47  case ELF::EM_MIPS:
48  switch (Type) {
49 #include "llvm/BinaryFormat/ELFRelocs/Mips.def"
50  default:
51  break;
52  }
53  break;
54  case ELF::EM_AARCH64:
55  switch (Type) {
56 #include "llvm/BinaryFormat/ELFRelocs/AArch64.def"
57  default:
58  break;
59  }
60  break;
61  case ELF::EM_ARM:
62  switch (Type) {
63 #include "llvm/BinaryFormat/ELFRelocs/ARM.def"
64  default:
65  break;
66  }
67  break;
70  switch (Type) {
71 #include "llvm/BinaryFormat/ELFRelocs/ARC.def"
72  default:
73  break;
74  }
75  break;
76  case ELF::EM_AVR:
77  switch (Type) {
78 #include "llvm/BinaryFormat/ELFRelocs/AVR.def"
79  default:
80  break;
81  }
82  break;
83  case ELF::EM_HEXAGON:
84  switch (Type) {
85 #include "llvm/BinaryFormat/ELFRelocs/Hexagon.def"
86  default:
87  break;
88  }
89  break;
90  case ELF::EM_LANAI:
91  switch (Type) {
92 #include "llvm/BinaryFormat/ELFRelocs/Lanai.def"
93  default:
94  break;
95  }
96  break;
97  case ELF::EM_PPC:
98  switch (Type) {
99 #include "llvm/BinaryFormat/ELFRelocs/PowerPC.def"
100  default:
101  break;
102  }
103  break;
104  case ELF::EM_PPC64:
105  switch (Type) {
106 #include "llvm/BinaryFormat/ELFRelocs/PowerPC64.def"
107  default:
108  break;
109  }
110  break;
111  case ELF::EM_RISCV:
112  switch (Type) {
113 #include "llvm/BinaryFormat/ELFRelocs/RISCV.def"
114  default:
115  break;
116  }
117  break;
118  case ELF::EM_S390:
119  switch (Type) {
120 #include "llvm/BinaryFormat/ELFRelocs/SystemZ.def"
121  default:
122  break;
123  }
124  break;
125  case ELF::EM_SPARC:
126  case ELF::EM_SPARC32PLUS:
127  case ELF::EM_SPARCV9:
128  switch (Type) {
129 #include "llvm/BinaryFormat/ELFRelocs/Sparc.def"
130  default:
131  break;
132  }
133  break;
134  case ELF::EM_AMDGPU:
135  switch (Type) {
136 #include "llvm/BinaryFormat/ELFRelocs/AMDGPU.def"
137  default:
138  break;
139  }
140  break;
141  case ELF::EM_BPF:
142  switch (Type) {
143 #include "llvm/BinaryFormat/ELFRelocs/BPF.def"
144  default:
145  break;
146  }
147  break;
148  case ELF::EM_MSP430:
149  switch (Type) {
150 #include "llvm/BinaryFormat/ELFRelocs/MSP430.def"
151  default:
152  break;
153  }
154  break;
155  case ELF::EM_VE:
156  switch (Type) {
157 #include "llvm/BinaryFormat/ELFRelocs/VE.def"
158  default:
159  break;
160  }
161  break;
162  case ELF::EM_CSKY:
163  switch (Type) {
164 #include "llvm/BinaryFormat/ELFRelocs/CSKY.def"
165  default:
166  break;
167  }
168  break;
169  case ELF::EM_LOONGARCH:
170  switch (Type) {
171 #include "llvm/BinaryFormat/ELFRelocs/LoongArch.def"
172  default:
173  break;
174  }
175  break;
176  default:
177  break;
178  }
179  return "Unknown";
180 }
181 
182 #undef ELF_RELOC
183 
185  switch (Machine) {
186  case ELF::EM_X86_64:
187  return ELF::R_X86_64_RELATIVE;
188  case ELF::EM_386:
189  case ELF::EM_IAMCU:
190  return ELF::R_386_RELATIVE;
191  case ELF::EM_MIPS:
192  break;
193  case ELF::EM_AARCH64:
194  return ELF::R_AARCH64_RELATIVE;
195  case ELF::EM_ARM:
196  return ELF::R_ARM_RELATIVE;
197  case ELF::EM_ARC_COMPACT:
199  return ELF::R_ARC_RELATIVE;
200  case ELF::EM_AVR:
201  break;
202  case ELF::EM_HEXAGON:
203  return ELF::R_HEX_RELATIVE;
204  case ELF::EM_LANAI:
205  break;
206  case ELF::EM_PPC:
207  break;
208  case ELF::EM_PPC64:
209  return ELF::R_PPC64_RELATIVE;
210  case ELF::EM_RISCV:
211  return ELF::R_RISCV_RELATIVE;
212  case ELF::EM_S390:
213  return ELF::R_390_RELATIVE;
214  case ELF::EM_SPARC:
215  case ELF::EM_SPARC32PLUS:
216  case ELF::EM_SPARCV9:
217  return ELF::R_SPARC_RELATIVE;
218  case ELF::EM_CSKY:
219  return ELF::R_CKCORE_RELATIVE;
220  case ELF::EM_VE:
221  return ELF::R_VE_RELATIVE;
222  case ELF::EM_AMDGPU:
223  break;
224  case ELF::EM_BPF:
225  break;
226  default:
227  break;
228  }
229  return 0;
230 }
231 
233  switch (Machine) {
234  case ELF::EM_ARM:
235  switch (Type) {
241  }
242  break;
243  case ELF::EM_HEXAGON:
244  switch (Type) { STRINGIFY_ENUM_CASE(ELF, SHT_HEX_ORDERED); }
245  break;
246  case ELF::EM_X86_64:
247  switch (Type) { STRINGIFY_ENUM_CASE(ELF, SHT_X86_64_UNWIND); }
248  break;
249  case ELF::EM_MIPS:
250  case ELF::EM_MIPS_RS3_LE:
251  switch (Type) {
256  }
257  break;
258  case ELF::EM_MSP430:
260  break;
261  case ELF::EM_RISCV:
262  switch (Type) { STRINGIFY_ENUM_CASE(ELF, SHT_RISCV_ATTRIBUTES); }
263  break;
264  default:
265  break;
266  }
267 
268  switch (Type) {
305  default:
306  return "Unknown";
307  }
308 }
309 
310 template <class ELFT>
311 std::vector<typename ELFT::Rel>
312 ELFFile<ELFT>::decode_relrs(Elf_Relr_Range relrs) const {
313  // This function decodes the contents of an SHT_RELR packed relocation
314  // section.
315  //
316  // Proposal for adding SHT_RELR sections to generic-abi is here:
317  // https://groups.google.com/forum/#!topic/generic-abi/bX460iggiKg
318  //
319  // The encoded sequence of Elf64_Relr entries in a SHT_RELR section looks
320  // like [ AAAAAAAA BBBBBBB1 BBBBBBB1 ... AAAAAAAA BBBBBB1 ... ]
321  //
322  // i.e. start with an address, followed by any number of bitmaps. The address
323  // entry encodes 1 relocation. The subsequent bitmap entries encode up to 63
324  // relocations each, at subsequent offsets following the last address entry.
325  //
326  // The bitmap entries must have 1 in the least significant bit. The assumption
327  // here is that an address cannot have 1 in lsb. Odd addresses are not
328  // supported.
329  //
330  // Excluding the least significant bit in the bitmap, each non-zero bit in
331  // the bitmap represents a relocation to be applied to a corresponding machine
332  // word that follows the base address word. The second least significant bit
333  // represents the machine word immediately following the initial address, and
334  // each bit that follows represents the next word, in linear order. As such,
335  // a single bitmap can encode up to 31 relocations in a 32-bit object, and
336  // 63 relocations in a 64-bit object.
337  //
338  // This encoding has a couple of interesting properties:
339  // 1. Looking at any entry, it is clear whether it's an address or a bitmap:
340  // even means address, odd means bitmap.
341  // 2. Just a simple list of addresses is a valid encoding.
342 
343  Elf_Rel Rel;
344  Rel.r_info = 0;
345  Rel.setType(getRelativeRelocationType(), false);
346  std::vector<Elf_Rel> Relocs;
347 
348  // Word type: uint32_t for Elf32, and uint64_t for Elf64.
349  using Addr = typename ELFT::uint;
350 
351  Addr Base = 0;
352  for (Elf_Relr R : relrs) {
353  typename ELFT::uint Entry = R;
354  if ((Entry & 1) == 0) {
355  // Even entry: encodes the offset for next relocation.
356  Rel.r_offset = Entry;
357  Relocs.push_back(Rel);
358  // Set base offset for subsequent bitmap entries.
359  Base = Entry + sizeof(Addr);
360  } else {
361  // Odd entry: encodes bitmap for relocations starting at base.
362  for (Addr Offset = Base; (Entry >>= 1) != 0; Offset += sizeof(Addr))
363  if ((Entry & 1) != 0) {
364  Rel.r_offset = Offset;
365  Relocs.push_back(Rel);
366  }
367  Base += (CHAR_BIT * sizeof(Entry) - 1) * sizeof(Addr);
368  }
369  }
370 
371  return Relocs;
372 }
373 
374 template <class ELFT>
376 ELFFile<ELFT>::android_relas(const Elf_Shdr &Sec) const {
377  // This function reads relocations in Android's packed relocation format,
378  // which is based on SLEB128 and delta encoding.
379  Expected<ArrayRef<uint8_t>> ContentsOrErr = getSectionContents(Sec);
380  if (!ContentsOrErr)
381  return ContentsOrErr.takeError();
382  ArrayRef<uint8_t> Content = *ContentsOrErr;
383  if (Content.size() < 4 || Content[0] != 'A' || Content[1] != 'P' ||
384  Content[2] != 'S' || Content[3] != '2')
385  return createError("invalid packed relocation header");
386  DataExtractor Data(Content, isLE(), ELFT::Is64Bits ? 8 : 4);
387  DataExtractor::Cursor Cur(/*Offset=*/4);
388 
389  uint64_t NumRelocs = Data.getSLEB128(Cur);
390  uint64_t Offset = Data.getSLEB128(Cur);
391  uint64_t Addend = 0;
392 
393  if (!Cur)
394  return std::move(Cur.takeError());
395 
396  std::vector<Elf_Rela> Relocs;
397  Relocs.reserve(NumRelocs);
398  while (NumRelocs) {
399  uint64_t NumRelocsInGroup = Data.getSLEB128(Cur);
400  if (!Cur)
401  return std::move(Cur.takeError());
402  if (NumRelocsInGroup > NumRelocs)
403  return createError("relocation group unexpectedly large");
404  NumRelocs -= NumRelocsInGroup;
405 
406  uint64_t GroupFlags = Data.getSLEB128(Cur);
407  bool GroupedByInfo = GroupFlags & ELF::RELOCATION_GROUPED_BY_INFO_FLAG;
408  bool GroupedByOffsetDelta = GroupFlags & ELF::RELOCATION_GROUPED_BY_OFFSET_DELTA_FLAG;
409  bool GroupedByAddend = GroupFlags & ELF::RELOCATION_GROUPED_BY_ADDEND_FLAG;
410  bool GroupHasAddend = GroupFlags & ELF::RELOCATION_GROUP_HAS_ADDEND_FLAG;
411 
412  uint64_t GroupOffsetDelta;
413  if (GroupedByOffsetDelta)
414  GroupOffsetDelta = Data.getSLEB128(Cur);
415 
416  uint64_t GroupRInfo;
417  if (GroupedByInfo)
418  GroupRInfo = Data.getSLEB128(Cur);
419 
420  if (GroupedByAddend && GroupHasAddend)
421  Addend += Data.getSLEB128(Cur);
422 
423  if (!GroupHasAddend)
424  Addend = 0;
425 
426  for (uint64_t I = 0; Cur && I != NumRelocsInGroup; ++I) {
427  Elf_Rela R;
428  Offset += GroupedByOffsetDelta ? GroupOffsetDelta : Data.getSLEB128(Cur);
429  R.r_offset = Offset;
430  R.r_info = GroupedByInfo ? GroupRInfo : Data.getSLEB128(Cur);
431  if (GroupHasAddend && !GroupedByAddend)
432  Addend += Data.getSLEB128(Cur);
433  R.r_addend = Addend;
434  Relocs.push_back(R);
435  }
436  if (!Cur)
437  return std::move(Cur.takeError());
438  }
439 
440  return Relocs;
441 }
442 
443 template <class ELFT>
444 std::string ELFFile<ELFT>::getDynamicTagAsString(unsigned Arch,
445  uint64_t Type) const {
446 #define DYNAMIC_STRINGIFY_ENUM(tag, value) \
447  case value: \
448  return #tag;
449 
450 #define DYNAMIC_TAG(n, v)
451  switch (Arch) {
452  case ELF::EM_AARCH64:
453  switch (Type) {
454 #define AARCH64_DYNAMIC_TAG(name, value) DYNAMIC_STRINGIFY_ENUM(name, value)
455 #include "llvm/BinaryFormat/DynamicTags.def"
456 #undef AARCH64_DYNAMIC_TAG
457  }
458  break;
459 
460  case ELF::EM_HEXAGON:
461  switch (Type) {
462 #define HEXAGON_DYNAMIC_TAG(name, value) DYNAMIC_STRINGIFY_ENUM(name, value)
463 #include "llvm/BinaryFormat/DynamicTags.def"
464 #undef HEXAGON_DYNAMIC_TAG
465  }
466  break;
467 
468  case ELF::EM_MIPS:
469  switch (Type) {
470 #define MIPS_DYNAMIC_TAG(name, value) DYNAMIC_STRINGIFY_ENUM(name, value)
471 #include "llvm/BinaryFormat/DynamicTags.def"
472 #undef MIPS_DYNAMIC_TAG
473  }
474  break;
475 
476  case ELF::EM_PPC:
477  switch (Type) {
478 #define PPC_DYNAMIC_TAG(name, value) DYNAMIC_STRINGIFY_ENUM(name, value)
479 #include "llvm/BinaryFormat/DynamicTags.def"
480 #undef PPC_DYNAMIC_TAG
481  }
482  break;
483 
484  case ELF::EM_PPC64:
485  switch (Type) {
486 #define PPC64_DYNAMIC_TAG(name, value) DYNAMIC_STRINGIFY_ENUM(name, value)
487 #include "llvm/BinaryFormat/DynamicTags.def"
488 #undef PPC64_DYNAMIC_TAG
489  }
490  break;
491 
492  case ELF::EM_RISCV:
493  switch (Type) {
494 #define RISCV_DYNAMIC_TAG(name, value) DYNAMIC_STRINGIFY_ENUM(name, value)
495 #include "llvm/BinaryFormat/DynamicTags.def"
496 #undef RISCV_DYNAMIC_TAG
497  }
498  break;
499  }
500 #undef DYNAMIC_TAG
501  switch (Type) {
502 // Now handle all dynamic tags except the architecture specific ones
503 #define AARCH64_DYNAMIC_TAG(name, value)
504 #define MIPS_DYNAMIC_TAG(name, value)
505 #define HEXAGON_DYNAMIC_TAG(name, value)
506 #define PPC_DYNAMIC_TAG(name, value)
507 #define PPC64_DYNAMIC_TAG(name, value)
508 #define RISCV_DYNAMIC_TAG(name, value)
509 // Also ignore marker tags such as DT_HIOS (maps to DT_VERNEEDNUM), etc.
510 #define DYNAMIC_TAG_MARKER(name, value)
511 #define DYNAMIC_TAG(name, value) case value: return #name;
512 #include "llvm/BinaryFormat/DynamicTags.def"
513 #undef DYNAMIC_TAG
514 #undef AARCH64_DYNAMIC_TAG
515 #undef MIPS_DYNAMIC_TAG
516 #undef HEXAGON_DYNAMIC_TAG
517 #undef PPC_DYNAMIC_TAG
518 #undef PPC64_DYNAMIC_TAG
519 #undef RISCV_DYNAMIC_TAG
520 #undef DYNAMIC_TAG_MARKER
521 #undef DYNAMIC_STRINGIFY_ENUM
522  default:
523  return "<unknown:>0x" + utohexstr(Type, true);
524  }
525 }
526 
527 template <class ELFT>
529  return getDynamicTagAsString(getHeader().e_machine, Type);
530 }
531 
532 template <class ELFT>
534  ArrayRef<Elf_Dyn> Dyn;
535 
536  auto ProgramHeadersOrError = program_headers();
537  if (!ProgramHeadersOrError)
538  return ProgramHeadersOrError.takeError();
539 
540  for (const Elf_Phdr &Phdr : *ProgramHeadersOrError) {
541  if (Phdr.p_type == ELF::PT_DYNAMIC) {
542  Dyn = makeArrayRef(
543  reinterpret_cast<const Elf_Dyn *>(base() + Phdr.p_offset),
544  Phdr.p_filesz / sizeof(Elf_Dyn));
545  break;
546  }
547  }
548 
549  // If we can't find the dynamic section in the program headers, we just fall
550  // back on the sections.
551  if (Dyn.empty()) {
552  auto SectionsOrError = sections();
553  if (!SectionsOrError)
554  return SectionsOrError.takeError();
555 
556  for (const Elf_Shdr &Sec : *SectionsOrError) {
557  if (Sec.sh_type == ELF::SHT_DYNAMIC) {
558  Expected<ArrayRef<Elf_Dyn>> DynOrError =
559  getSectionContentsAsArray<Elf_Dyn>(Sec);
560  if (!DynOrError)
561  return DynOrError.takeError();
562  Dyn = *DynOrError;
563  break;
564  }
565  }
566 
567  if (!Dyn.data())
568  return ArrayRef<Elf_Dyn>();
569  }
570 
571  if (Dyn.empty())
572  return createError("invalid empty dynamic section");
573 
574  if (Dyn.back().d_tag != ELF::DT_NULL)
575  return createError("dynamic sections must be DT_NULL terminated");
576 
577  return Dyn;
578 }
579 
580 template <class ELFT>
583  auto ProgramHeadersOrError = program_headers();
584  if (!ProgramHeadersOrError)
585  return ProgramHeadersOrError.takeError();
586 
588 
589  for (const Elf_Phdr &Phdr : *ProgramHeadersOrError)
590  if (Phdr.p_type == ELF::PT_LOAD)
591  LoadSegments.push_back(const_cast<Elf_Phdr *>(&Phdr));
592 
593  auto SortPred = [](const Elf_Phdr_Impl<ELFT> *A,
594  const Elf_Phdr_Impl<ELFT> *B) {
595  return A->p_vaddr < B->p_vaddr;
596  };
597  if (!llvm::is_sorted(LoadSegments, SortPred)) {
598  if (Error E =
599  WarnHandler("loadable segments are unsorted by virtual address"))
600  return std::move(E);
601  llvm::stable_sort(LoadSegments, SortPred);
602  }
603 
604  const Elf_Phdr *const *I = llvm::upper_bound(
605  LoadSegments, VAddr, [](uint64_t VAddr, const Elf_Phdr_Impl<ELFT> *Phdr) {
606  return VAddr < Phdr->p_vaddr;
607  });
608 
609  if (I == LoadSegments.begin())
610  return createError("virtual address is not in any segment: 0x" +
611  Twine::utohexstr(VAddr));
612  --I;
613  const Elf_Phdr &Phdr = **I;
614  uint64_t Delta = VAddr - Phdr.p_vaddr;
615  if (Delta >= Phdr.p_filesz)
616  return createError("virtual address is not in any segment: 0x" +
617  Twine::utohexstr(VAddr));
618 
619  uint64_t Offset = Phdr.p_offset + Delta;
620  if (Offset >= getBufSize())
621  return createError("can't map virtual address 0x" +
622  Twine::utohexstr(VAddr) + " to the segment with index " +
623  Twine(&Phdr - (*ProgramHeadersOrError).data() + 1) +
624  ": the segment ends at 0x" +
625  Twine::utohexstr(Phdr.p_offset + Phdr.p_filesz) +
626  ", which is greater than the file size (0x" +
627  Twine::utohexstr(getBufSize()) + ")");
628 
629  return base() + Offset;
630 }
631 
632 template <class ELFT>
634 ELFFile<ELFT>::decodeBBAddrMap(const Elf_Shdr &Sec) const {
635  Expected<ArrayRef<uint8_t>> ContentsOrErr = getSectionContents(Sec);
636  if (!ContentsOrErr)
637  return ContentsOrErr.takeError();
638  ArrayRef<uint8_t> Content = *ContentsOrErr;
639  DataExtractor Data(Content, isLE(), ELFT::Is64Bits ? 8 : 4);
640  std::vector<BBAddrMap> FunctionEntries;
641 
642  DataExtractor::Cursor Cur(0);
643  Error ULEBSizeErr = Error::success();
644  // Helper to extract and decode the next ULEB128 value as uint32_t.
645  // Returns zero and sets ULEBSizeErr if the ULEB128 value exceeds the uint32_t
646  // limit.
647  // Also returns zero if ULEBSizeErr is already in an error state.
648  auto ReadULEB128AsUInt32 = [&Data, &Cur, &ULEBSizeErr]() -> uint32_t {
649  // Bail out and do not extract data if ULEBSizeErr is already set.
650  if (ULEBSizeErr)
651  return 0;
652  uint64_t Offset = Cur.tell();
653  uint64_t Value = Data.getULEB128(Cur);
654  if (Value > UINT32_MAX) {
655  ULEBSizeErr = createError(
656  "ULEB128 value at offset 0x" + Twine::utohexstr(Offset) +
657  " exceeds UINT32_MAX (0x" + Twine::utohexstr(Value) + ")");
658  return 0;
659  }
660  return static_cast<uint32_t>(Value);
661  };
662 
663  uint8_t Version = 0;
664  while (!ULEBSizeErr && Cur && Cur.tell() < Content.size()) {
665  if (Sec.sh_type == ELF::SHT_LLVM_BB_ADDR_MAP) {
666  Version = Data.getU8(Cur);
667  if (!Cur)
668  break;
669  if (Version > 1)
670  return createError("unsupported SHT_LLVM_BB_ADDR_MAP version: " +
671  Twine(static_cast<int>(Version)));
672  Data.getU8(Cur); // Feature byte
673  }
674  uintX_t Address = static_cast<uintX_t>(Data.getAddress(Cur));
675  uint32_t NumBlocks = ReadULEB128AsUInt32();
676  std::vector<BBAddrMap::BBEntry> BBEntries;
677  uint32_t PrevBBEndOffset = 0;
678  for (uint32_t BlockID = 0; !ULEBSizeErr && Cur && (BlockID < NumBlocks);
679  ++BlockID) {
680  uint32_t Offset = ReadULEB128AsUInt32();
681  uint32_t Size = ReadULEB128AsUInt32();
682  uint32_t Metadata = ReadULEB128AsUInt32();
683  if (Version >= 1) {
684  // Offset is calculated relative to the end of the previous BB.
685  Offset += PrevBBEndOffset;
686  PrevBBEndOffset = Offset + Size;
687  }
688  BBEntries.push_back({Offset, Size, Metadata});
689  }
690  FunctionEntries.push_back({Address, std::move(BBEntries)});
691  }
692  // Either Cur is in the error state, or ULEBSizeError is set (not both), but
693  // we join the two errors here to be safe.
694  if (!Cur || ULEBSizeErr)
695  return joinErrors(Cur.takeError(), std::move(ULEBSizeErr));
696  return FunctionEntries;
697 }
698 
699 template class llvm::object::ELFFile<ELF32LE>;
700 template class llvm::object::ELFFile<ELF32BE>;
701 template class llvm::object::ELFFile<ELF64LE>;
702 template class llvm::object::ELFFile<ELF64BE>;
llvm::ELF::SHT_HEX_ORDERED
@ SHT_HEX_ORDERED
Definition: ELF.h:1012
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:17
llvm::ELF::SHT_ANDROID_REL
@ SHT_ANDROID_REL
Definition: ELF.h:977
llvm::upper_bound
auto upper_bound(R &&Range, T &&Value)
Provide wrappers to std::upper_bound which take ranges instead of having to pass begin/end explicitly...
Definition: STLExtras.h:1749
llvm::ELF::SHT_GNU_ATTRIBUTES
@ SHT_GNU_ATTRIBUTES
Definition: ELF.h:996
llvm::ELF::SHT_ARM_DEBUGOVERLAY
@ SHT_ARM_DEBUGOVERLAY
Definition: ELF.h:1010
llvm::ELF::SHT_PREINIT_ARRAY
@ SHT_PREINIT_ARRAY
Definition: ELF.h:968
llvm::object::ELFFile::android_relas
Expected< std::vector< Elf_Rela > > android_relas(const Elf_Shdr &Sec) const
Definition: ELF.cpp:376
llvm::SmallVector
This is a 'vector' (really, a variable-sized array), optimized for the case when the array is small.
Definition: SmallVector.h:1185
llvm::Error::success
static ErrorSuccess success()
Create a success value.
Definition: Error.h:329
llvm::ELF::EM_HEXAGON
@ EM_HEXAGON
Definition: ELF.h:257
llvm::ELF::EM_LOONGARCH
@ EM_LOONGARCH
Definition: ELF.h:322
Content
T Content
Definition: ELFObjHandler.cpp:88
llvm::ELF::SHT_GNU_versym
@ SHT_GNU_versym
Definition: ELF.h:1000
llvm::ELF::EM_LANAI
@ EM_LANAI
Definition: ELF.h:318
llvm::ELF::SHT_SYMTAB_SHNDX
@ SHT_SYMTAB_SHNDX
Definition: ELF.h:970
llvm::ELF::SHT_STRTAB
@ SHT_STRTAB
Definition: ELF.h:957
llvm::Type
The instances of the Type class are immutable: once they are created, they are never changed.
Definition: Type.h:45
llvm::ELF::SHT_MIPS_DWARF
@ SHT_MIPS_DWARF
Definition: ELF.h:1018
llvm::ELF::EM_SPARCV9
@ EM_SPARCV9
Definition: ELF.h:159
STRINGIFY_ENUM_CASE
#define STRINGIFY_ENUM_CASE(ns, name)
Definition: ELF.cpp:16
llvm::ELF::EM_AVR
@ EM_AVR
Definition: ELF.h:199
llvm::ELF::RELOCATION_GROUPED_BY_OFFSET_DELTA_FLAG
@ RELOCATION_GROUPED_BY_OFFSET_DELTA_FLAG
Definition: ELF.h:1741
llvm::Expected
Tagged union holding either a T or a Error.
Definition: APFloat.h:41
llvm::ELF::SHT_FINI_ARRAY
@ SHT_FINI_ARRAY
Definition: ELF.h:967
llvm::ELF::SHT_LLVM_DEPENDENT_LIBRARIES
@ SHT_LLVM_DEPENDENT_LIBRARIES
Definition: ELF.h:983
llvm::Data
@ Data
Definition: SIMachineScheduler.h:55
llvm::ArrayRef::empty
bool empty() const
empty - Check if the array is empty.
Definition: ArrayRef.h:159
llvm::ArrayRef::data
const T * data() const
Definition: ArrayRef.h:161
uint
<%struct.s * > cast struct s *S to sbyte *< sbyte * > sbyte uint
Definition: README.txt:239
llvm::ELF::RELOCATION_GROUPED_BY_ADDEND_FLAG
@ RELOCATION_GROUPED_BY_ADDEND_FLAG
Definition: ELF.h:1742
llvm::ELF::SHT_ANDROID_RELR
@ SHT_ANDROID_RELR
Definition: ELF.h:995
llvm::DataExtractor::Cursor::takeError
Error takeError()
Return error contained inside this Cursor, if any.
Definition: DataExtractor.h:78
llvm::ELF::SHT_LLVM_PART_EHDR
@ SHT_LLVM_PART_EHDR
Definition: ELF.h:986
llvm::ArrayRef::back
const T & back() const
back - Get the last element.
Definition: ArrayRef.h:173
llvm::ELF::EM_68K
@ EM_68K
Definition: ELF.h:137
ELF.h
llvm::ELF::EM_ARM
@ EM_ARM
Definition: ELF.h:156
llvm::ELF::SHT_LLVM_CALL_GRAPH_PROFILE
@ SHT_LLVM_CALL_GRAPH_PROFILE
Definition: ELF.h:991
E
static GCRegistry::Add< CoreCLRGC > E("coreclr", "CoreCLR-compatible GC")
llvm::ELF::SHT_HASH
@ SHT_HASH
Definition: ELF.h:959
B
static GCRegistry::Add< OcamlGC > B("ocaml", "ocaml 3.10-compatible GC")
llvm::object::ELFFile::decodeBBAddrMap
Expected< std::vector< BBAddrMap > > decodeBBAddrMap(const Elf_Shdr &Sec) const
Definition: ELF.cpp:634
llvm::ELF::SHT_ANDROID_RELA
@ SHT_ANDROID_RELA
Definition: ELF.h:978
llvm::IndexedInstrProf::Version
const uint64_t Version
Definition: InstrProf.h:1027
llvm::ELF::SHT_SHLIB
@ SHT_SHLIB
Definition: ELF.h:964
llvm::Metadata
Root of the metadata hierarchy.
Definition: Metadata.h:62
llvm::ELF::EM_RISCV
@ EM_RISCV
Definition: ELF.h:317
llvm::ELF::EM_IAMCU
@ EM_IAMCU
Definition: ELF.h:139
llvm::ELF::SHT_LLVM_ODRTAB
@ SHT_LLVM_ODRTAB
Definition: ELF.h:979
llvm::ELF::SHT_MIPS_ABIFLAGS
@ SHT_MIPS_ABIFLAGS
Definition: ELF.h:1019
llvm::ELF::SHT_NOBITS
@ SHT_NOBITS
Definition: ELF.h:962
llvm::ELF::PT_LOAD
@ PT_LOAD
Definition: ELF.h:1337
llvm::ELF::EM_BPF
@ EM_BPF
Definition: ELF.h:319
llvm::function_ref
An efficient, type-erasing, non-owning reference to a callable.
Definition: STLFunctionalExtras.h:36
llvm::ELF::SHT_DYNAMIC
@ SHT_DYNAMIC
Definition: ELF.h:960
llvm::ELF::EM_MIPS_RS3_LE
@ EM_MIPS_RS3_LE
Definition: ELF.h:143
llvm::ELF::SHT_LLVM_SYMPART
@ SHT_LLVM_SYMPART
Definition: ELF.h:985
llvm::ELF::SHT_MSP430_ATTRIBUTES
@ SHT_MSP430_ATTRIBUTES
Definition: ELF.h:1021
llvm::object::getELFRelocationTypeName
StringRef getELFRelocationTypeName(uint32_t Machine, uint32_t Type)
Definition: ELF.cpp:22
object
bar al al movzbl eax ret Missed when stored in a memory object
Definition: README.txt:1411
llvm::object::Elf_Phdr_Impl
Definition: ELFTypes.h:33
llvm::Twine::utohexstr
static Twine utohexstr(const uint64_t &Val)
Definition: Twine.h:408
llvm::ELF::EM_CSKY
@ EM_CSKY
Definition: ELF.h:321
llvm::ELF::SHT_NULL
@ SHT_NULL
Definition: ELF.h:954
llvm::ELF::PT_DYNAMIC
@ PT_DYNAMIC
Definition: ELF.h:1338
uint64_t
ELF.h
llvm::ELF::SHT_SYMTAB
@ SHT_SYMTAB
Definition: ELF.h:956
Addr
uint64_t Addr
Definition: ELFObjHandler.cpp:78
llvm::ELF::SHT_ARM_EXIDX
@ SHT_ARM_EXIDX
Definition: ELF.h:1005
llvm::ELF::EM_PPC64
@ EM_PPC64
Definition: ELF.h:149
llvm::ELF::EM_SPARC32PLUS
@ EM_SPARC32PLUS
Definition: ELF.h:146
move
compiles ldr LCPI1_0 ldr ldr mov lsr tst moveq r1 ldr LCPI1_1 and r0 bx lr It would be better to do something like to fold the shift into the conditional move
Definition: README.txt:546
llvm::ELF::EM_MIPS
@ EM_MIPS
Definition: ELF.h:141
llvm::ELF::EM_ARC_COMPACT2
@ EM_ARC_COMPACT2
Definition: ELF.h:291
llvm::object::ELFFile::toMappedAddr
Expected< const uint8_t * > toMappedAddr(uint64_t VAddr, WarningHandler WarnHandler=&defaultWarningHandler) const
Definition: ELF.cpp:582
I
#define I(x, y, z)
Definition: MD5.cpp:58
llvm::ELF::SHT_LLVM_ADDRSIG
@ SHT_LLVM_ADDRSIG
Definition: ELF.h:981
llvm::joinErrors
Error joinErrors(Error E1, Error E2)
Concatenate errors.
Definition: Error.h:426
llvm::object::getELFSectionTypeName
StringRef getELFSectionTypeName(uint32_t Machine, uint32_t Type)
llvm::ELF::SHT_LLVM_BB_ADDR_MAP
@ SHT_LLVM_BB_ADDR_MAP
Definition: ELF.h:992
llvm::object::ELFFile::dynamicEntries
Expected< Elf_Dyn_Range > dynamicEntries() const
Definition: ELF.cpp:533
base
therefore end up llgh r3 lr r0 br r14 but truncating the load would lh r3 br r14 Functions ret i64 and ought to be implemented ngr r0 br r14 but two address optimizations reverse the order of the AND and ngr r2 lgr r0 br r14 CodeGen SystemZ and ll has several examples of this Out of range displacements are usually handled by loading the full address into a register In many cases it would be better to create an anchor point instead E g i64 base
Definition: README.txt:125
llvm::ELF::SHT_MIPS_OPTIONS
@ SHT_MIPS_OPTIONS
Definition: ELF.h:1017
llvm::ELF::SHT_RELR
@ SHT_RELR
Definition: ELF.h:973
llvm::DataExtractor::Cursor
A class representing a position in a DataExtractor, as well as any error encountered during extractio...
Definition: DataExtractor.h:54
llvm::ELF::SHT_RELA
@ SHT_RELA
Definition: ELF.h:958
llvm::ELF::EM_AMDGPU
@ EM_AMDGPU
Definition: ELF.h:316
llvm::ELF::SHT_X86_64_UNWIND
@ SHT_X86_64_UNWIND
Definition: ELF.h:1014
llvm::ArrayRef< uint8_t >
llvm::ELF::RELOCATION_GROUPED_BY_INFO_FLAG
@ RELOCATION_GROUPED_BY_INFO_FLAG
Definition: ELF.h:1740
llvm::ELF::SHT_NOTE
@ SHT_NOTE
Definition: ELF.h:961
llvm::StringRef
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:58
llvm::ELF::SHT_ARM_OVERLAYSECTION
@ SHT_ARM_OVERLAYSECTION
Definition: ELF.h:1011
uint32_t
llvm::object::ELFFile::getDynamicTagAsString
std::string getDynamicTagAsString(unsigned Arch, uint64_t Type) const
Definition: ELF.cpp:444
llvm::ELF::SHT_GROUP
@ SHT_GROUP
Definition: ELF.h:969
llvm::Twine
Twine - A lightweight data structure for efficiently representing the concatenation of temporary valu...
Definition: Twine.h:83
llvm::stable_sort
void stable_sort(R &&Range)
Definition: STLExtras.h:1761
llvm::ELF::SHT_GNU_verdef
@ SHT_GNU_verdef
Definition: ELF.h:998
llvm::ELF::SHT_ARM_PREEMPTMAP
@ SHT_ARM_PREEMPTMAP
Definition: ELF.h:1007
llvm::Error
Lightweight error class with error context and mandatory checking.
Definition: Error.h:155
llvm::ELF::EM_S390
@ EM_S390
Definition: ELF.h:150
llvm::ELF::SHT_GNU_verneed
@ SHT_GNU_verneed
Definition: ELF.h:999
DataExtractor.h
llvm::ELF::SHT_REL
@ SHT_REL
Definition: ELF.h:963
llvm::TargetStackID::Value
Value
Definition: TargetFrameLowering.h:27
llvm::is_sorted
bool is_sorted(R &&Range, Compare C)
Wrapper function around std::is_sorted to check if elements in a range R are sorted with respect to a...
Definition: STLExtras.h:1697
llvm::ELF::SHT_LLVM_BB_ADDR_MAP_V0
@ SHT_LLVM_BB_ADDR_MAP_V0
Definition: ELF.h:988
llvm::ELF::SHT_INIT_ARRAY
@ SHT_INIT_ARRAY
Definition: ELF.h:966
llvm::object::getELFRelativeRelocationType
uint32_t getELFRelativeRelocationType(uint32_t Machine)
Definition: ELF.cpp:184
llvm::ELF::EM_SPARC
@ EM_SPARC
Definition: ELF.h:135
llvm::ELF::SHT_GNU_HASH
@ SHT_GNU_HASH
Definition: ELF.h:997
llvm::ELF::SHT_LLVM_LINKER_OPTIONS
@ SHT_LLVM_LINKER_OPTIONS
Definition: ELF.h:980
llvm::makeArrayRef
ArrayRef< T > makeArrayRef(const T &OneElt)
Construct an ArrayRef from a single element.
Definition: ArrayRef.h:475
llvm::ELF::SHT_DYNSYM
@ SHT_DYNSYM
Definition: ELF.h:965
llvm::Expected::takeError
Error takeError()
Take ownership of the stored error.
Definition: Error.h:597
llvm::DataExtractor
Definition: DataExtractor.h:41
Machine
COFF::MachineTypes Machine
Definition: COFFYAML.cpp:369
llvm::ELF::EM_PPC
@ EM_PPC
Definition: ELF.h:148
llvm::ELF::SHT_PROGBITS
@ SHT_PROGBITS
Definition: ELF.h:955
llvm::ELF::SHT_RISCV_ATTRIBUTES
@ SHT_RISCV_ATTRIBUTES
Definition: ELF.h:1023
llvm::ELF::EM_X86_64
@ EM_X86_64
Definition: ELF.h:178
llvm::object::ELFFile::decode_relrs
std::vector< Elf_Rel > decode_relrs(Elf_Relr_Range relrs) const
Definition: ELF.cpp:312
llvm::ELF::EM_MSP430
@ EM_MSP430
Definition: ELF.h:222
llvm::ELF::SHT_LLVM_PART_PHDR
@ SHT_LLVM_PART_PHDR
Definition: ELF.h:987
llvm::object::createError
Error createError(const Twine &Err)
Definition: Error.h:84
llvm::ELF::RELOCATION_GROUP_HAS_ADDEND_FLAG
@ RELOCATION_GROUP_HAS_ADDEND_FLAG
Definition: ELF.h:1743
llvm::ELF::SHT_MIPS_REGINFO
@ SHT_MIPS_REGINFO
Definition: ELF.h:1016
llvm::ELF::EM_VE
@ EM_VE
Definition: ELF.h:320
llvm::ELF::EM_AARCH64
@ EM_AARCH64
Definition: ELF.h:280
llvm::ELF::EM_ARC_COMPACT
@ EM_ARC_COMPACT
Definition: ELF.h:209
llvm::ELF::EM_386
@ EM_386
Definition: ELF.h:136
llvm::Value
LLVM Value Representation.
Definition: Value.h:74
llvm::object::ELFFile
Definition: ELF.h:94
llvm::sampleprof::Base
@ Base
Definition: Discriminator.h:58
llvm::ELF::SHT_ARM_ATTRIBUTES
@ SHT_ARM_ATTRIBUTES
Definition: ELF.h:1009