1 //===- ELFDumper.cpp - ELF-specific dumper --------------------------------===//
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 /// \file
10 /// This file implements the ELF-specific dumper for llvm-readobj.
11 ///
12 //===----------------------------------------------------------------------===//
13 
14 #include "ARMEHABIPrinter.h"
15 #include "DwarfCFIEHPrinter.h"
16 #include "Error.h"
17 #include "ObjDumper.h"
18 #include "StackMapPrinter.h"
19 #include "llvm-readobj.h"
20 #include "llvm/ADT/ArrayRef.h"
21 #include "llvm/ADT/DenseMap.h"
22 #include "llvm/ADT/DenseSet.h"
23 #include "llvm/ADT/MapVector.h"
24 #include "llvm/ADT/Optional.h"
25 #include "llvm/ADT/PointerIntPair.h"
26 #include "llvm/ADT/STLExtras.h"
27 #include "llvm/ADT/SmallString.h"
28 #include "llvm/ADT/SmallVector.h"
29 #include "llvm/ADT/StringExtras.h"
30 #include "llvm/ADT/StringRef.h"
31 #include "llvm/ADT/Twine.h"
32 #include "llvm/BinaryFormat/AMDGPUMetadataVerifier.h"
33 #include "llvm/BinaryFormat/ELF.h"
34 #include "llvm/Demangle/Demangle.h"
35 #include "llvm/Object/ELF.h"
36 #include "llvm/Object/ELFObjectFile.h"
37 #include "llvm/Object/ELFTypes.h"
38 #include "llvm/Object/Error.h"
39 #include "llvm/Object/ObjectFile.h"
40 #include "llvm/Object/RelocationResolver.h"
41 #include "llvm/Object/StackMapParser.h"
42 #include "llvm/Support/AMDGPUMetadata.h"
43 #include "llvm/Support/ARMAttributeParser.h"
44 #include "llvm/Support/ARMBuildAttributes.h"
45 #include "llvm/Support/Casting.h"
46 #include "llvm/Support/Compiler.h"
47 #include "llvm/Support/Endian.h"
48 #include "llvm/Support/ErrorHandling.h"
49 #include "llvm/Support/Format.h"
50 #include "llvm/Support/FormatVariadic.h"
51 #include "llvm/Support/FormattedStream.h"
52 #include "llvm/Support/LEB128.h"
53 #include "llvm/Support/MathExtras.h"
54 #include "llvm/Support/MipsABIFlags.h"
55 #include "llvm/Support/ScopedPrinter.h"
56 #include "llvm/Support/raw_ostream.h"
57 #include <algorithm>
58 #include <cinttypes>
59 #include <cstddef>
60 #include <cstdint>
61 #include <cstdlib>
62 #include <iterator>
63 #include <memory>
64 #include <string>
65 #include <system_error>
66 #include <unordered_set>
67 #include <vector>
68 
69 using namespace llvm;
70 using namespace llvm::object;
71 using namespace ELF;
72 
73 #define LLVM_READOBJ_ENUM_CASE(ns, enum)                                       \
74   case ns::enum:                                                               \
75     return #enum;
76 
77 #define ENUM_ENT(enum, altName)                                                \
78   { #enum, altName, ELF::enum }
79 
80 #define ENUM_ENT_1(enum)                                                       \
81   { #enum, #enum, ELF::enum }
82 
83 #define LLVM_READOBJ_PHDR_ENUM(ns, enum)                                       \
84   case ns::enum:                                                               \
85     return std::string(#enum).substr(3);
86 
87 #define TYPEDEF_ELF_TYPES(ELFT)                                                \
88   using ELFO = ELFFile<ELFT>;                                                  \
89   using Elf_Addr = typename ELFT::Addr;                                        \
90   using Elf_Shdr = typename ELFT::Shdr;                                        \
91   using Elf_Sym = typename ELFT::Sym;                                          \
92   using Elf_Dyn = typename ELFT::Dyn;                                          \
93   using Elf_Dyn_Range = typename ELFT::DynRange;                               \
94   using Elf_Rel = typename ELFT::Rel;                                          \
95   using Elf_Rela = typename ELFT::Rela;                                        \
96   using Elf_Relr = typename ELFT::Relr;                                        \
97   using Elf_Rel_Range = typename ELFT::RelRange;                               \
98   using Elf_Rela_Range = typename ELFT::RelaRange;                             \
99   using Elf_Relr_Range = typename ELFT::RelrRange;                             \
100   using Elf_Phdr = typename ELFT::Phdr;                                        \
101   using Elf_Half = typename ELFT::Half;                                        \
102   using Elf_Ehdr = typename ELFT::Ehdr;                                        \
103   using Elf_Word = typename ELFT::Word;                                        \
104   using Elf_Hash = typename ELFT::Hash;                                        \
105   using Elf_GnuHash = typename ELFT::GnuHash;                                  \
106   using Elf_Note  = typename ELFT::Note;                                       \
107   using Elf_Sym_Range = typename ELFT::SymRange;                               \
108   using Elf_Versym = typename ELFT::Versym;                                    \
109   using Elf_Verneed = typename ELFT::Verneed;                                  \
110   using Elf_Vernaux = typename ELFT::Vernaux;                                  \
111   using Elf_Verdef = typename ELFT::Verdef;                                    \
112   using Elf_Verdaux = typename ELFT::Verdaux;                                  \
113   using Elf_CGProfile = typename ELFT::CGProfile;                              \
114   using uintX_t = typename ELFT::uint;
115 
116 namespace {
117 
118 template <class ELFT> class DumpStyle;
119 
120 /// Represents a contiguous uniform range in the file. We cannot just create a
121 /// range directly because when creating one of these from the .dynamic table
122 /// the size, entity size and virtual address are different entries in arbitrary
123 /// order (DT_REL, DT_RELSZ, DT_RELENT for example).
124 struct DynRegionInfo {
125   DynRegionInfo(StringRef ObjName) : FileName(ObjName) {}
126   DynRegionInfo(const void *A, uint64_t S, uint64_t ES, StringRef ObjName)
127       : Addr(A), Size(S), EntSize(ES), FileName(ObjName) {}
128 
129   /// Address in current address space.
130   const void *Addr = nullptr;
131   /// Size in bytes of the region.
132   uint64_t Size = 0;
133   /// Size of each entity in the region.
134   uint64_t EntSize = 0;
135 
136   /// Name of the file. Used for error reporting.
137   StringRef FileName;
138 
139   template <typename Type> ArrayRef<Type> getAsArrayRef() const {
140     const Type *Start = reinterpret_cast<const Type *>(Addr);
141     if (!Start)
142       return {Start, Start};
143     if (EntSize != sizeof(Type) || Size % EntSize) {
144       // TODO: Add a section index to this warning.
145       reportWarning(createError("invalid section size (" + Twine(Size) +
146                                 ") or entity size (" + Twine(EntSize) + ")"),
147                     FileName);
148       return {Start, Start};
149     }
150     return {Start, Start + (Size / EntSize)};
151   }
152 };
153 
154 template <typename ELFT> class ELFDumper : public ObjDumper {
155 public:
156   ELFDumper(const object::ELFObjectFile<ELFT> *ObjF, ScopedPrinter &Writer);
157 
158   void printFileHeaders() override;
159   void printSectionHeaders() override;
160   void printRelocations() override;
161   void printDynamicRelocations() override;
162   void printSymbols(bool PrintSymbols, bool PrintDynamicSymbols) override;
163   void printHashSymbols() override;
164   void printUnwindInfo() override;
165 
166   void printDynamicTable() override;
167   void printNeededLibraries() override;
168   void printProgramHeaders(bool PrintProgramHeaders,
169                            cl::boolOrDefault PrintSectionMapping) override;
170   void printHashTable() override;
171   void printGnuHashTable() override;
172   void printLoadName() override;
173   void printVersionInfo() override;
174   void printGroupSections() override;
175 
176   void printAttributes() override;
177   void printMipsPLTGOT() override;
178   void printMipsABIFlags() override;
179   void printMipsReginfo() override;
180   void printMipsOptions() override;
181 
182   void printStackMap() const override;
183 
184   void printHashHistogram() override;
185 
186   void printCGProfile() override;
187   void printAddrsig() override;
188 
189   void printNotes() override;
190 
191   void printELFLinkerOptions() override;
192   void printStackSizes() override;
193 
194   const object::ELFObjectFile<ELFT> *getElfObject() const { return ObjF; };
195 
196 private:
197   std::unique_ptr<DumpStyle<ELFT>> ELFDumperStyle;
198 
199   TYPEDEF_ELF_TYPES(ELFT)
200 
201   DynRegionInfo checkDRI(DynRegionInfo DRI) {
202     const ELFFile<ELFT> *Obj = ObjF->getELFFile();
203     if (DRI.Addr < Obj->base() ||
204         reinterpret_cast<const uint8_t *>(DRI.Addr) + DRI.Size >
205             Obj->base() + Obj->getBufSize())
206       reportError(llvm::object::object_error::parse_failed,
207                   ObjF->getFileName());
208     return DRI;
209   }
210 
211   DynRegionInfo createDRIFrom(const Elf_Phdr *P, uintX_t EntSize) {
212     return checkDRI({ObjF->getELFFile()->base() + P->p_offset, P->p_filesz,
213                      EntSize, ObjF->getFileName()});
214   }
215 
216   DynRegionInfo createDRIFrom(const Elf_Shdr *S) {
217     return checkDRI({ObjF->getELFFile()->base() + S->sh_offset, S->sh_size,
218                      S->sh_entsize, ObjF->getFileName()});
219   }
220 
221   void loadDynamicTable(const ELFFile<ELFT> *Obj);
222   void parseDynamicTable();
223 
224   StringRef getSymbolVersion(StringRef StrTab, const Elf_Sym *symb,
225                              bool &IsDefault) const;
226   void LoadVersionMap() const;
227   void LoadVersionNeeds(const Elf_Shdr *ec) const;
228   void LoadVersionDefs(const Elf_Shdr *sec) const;
229 
230   const object::ELFObjectFile<ELFT> *ObjF;
231   DynRegionInfo DynRelRegion;
232   DynRegionInfo DynRelaRegion;
233   DynRegionInfo DynRelrRegion;
234   DynRegionInfo DynPLTRelRegion;
235   DynRegionInfo DynSymRegion;
236   DynRegionInfo DynamicTable;
237   StringRef DynamicStringTable;
238   std::string SOName = "<Not found>";
239   const Elf_Hash *HashTable = nullptr;
240   const Elf_GnuHash *GnuHashTable = nullptr;
241   const Elf_Shdr *DotSymtabSec = nullptr;
242   const Elf_Shdr *DotCGProfileSec = nullptr;
243   const Elf_Shdr *DotAddrsigSec = nullptr;
244   StringRef DynSymtabName;
245   ArrayRef<Elf_Word> ShndxTable;
246 
247   const Elf_Shdr *SymbolVersionSection = nullptr;   // .gnu.version
248   const Elf_Shdr *SymbolVersionNeedSection = nullptr; // .gnu.version_r
249   const Elf_Shdr *SymbolVersionDefSection = nullptr; // .gnu.version_d
250 
251   // Records for each version index the corresponding Verdef or Vernaux entry.
252   // This is filled the first time LoadVersionMap() is called.
253   class VersionMapEntry : public PointerIntPair<const void *, 1> {
254   public:
255     // If the integer is 0, this is an Elf_Verdef*.
256     // If the integer is 1, this is an Elf_Vernaux*.
257     VersionMapEntry() : PointerIntPair<const void *, 1>(nullptr, 0) {}
258     VersionMapEntry(const Elf_Verdef *verdef)
259         : PointerIntPair<const void *, 1>(verdef, 0) {}
260     VersionMapEntry(const Elf_Vernaux *vernaux)
261         : PointerIntPair<const void *, 1>(vernaux, 1) {}
262 
263     bool isNull() const { return getPointer() == nullptr; }
264     bool isVerdef() const { return !isNull() && getInt() == 0; }
265     bool isVernaux() const { return !isNull() && getInt() == 1; }
266     const Elf_Verdef *getVerdef() const {
267       return isVerdef() ? (const Elf_Verdef *)getPointer() : nullptr;
268     }
269     const Elf_Vernaux *getVernaux() const {
270       return isVernaux() ? (const Elf_Vernaux *)getPointer() : nullptr;
271     }
272   };
273   mutable SmallVector<VersionMapEntry, 16> VersionMap;
274 
275 public:
276   Elf_Dyn_Range dynamic_table() const {
277     // A valid .dynamic section contains an array of entries terminated
278     // with a DT_NULL entry. However, sometimes the section content may
279     // continue past the DT_NULL entry, so to dump the section correctly,
280     // we first find the end of the entries by iterating over them.
281     Elf_Dyn_Range Table = DynamicTable.getAsArrayRef<Elf_Dyn>();
282 
283     size_t Size = 0;
284     while (Size < Table.size())
285       if (Table[Size++].getTag() == DT_NULL)
286         break;
287 
288     return Table.slice(0, Size);
289   }
290 
291   Elf_Sym_Range dynamic_symbols() const {
292     return DynSymRegion.getAsArrayRef<Elf_Sym>();
293   }
294 
295   Elf_Rel_Range dyn_rels() const;
296   Elf_Rela_Range dyn_relas() const;
297   Elf_Relr_Range dyn_relrs() const;
298   std::string getFullSymbolName(const Elf_Sym *Symbol, StringRef StrTable,
299                                 bool IsDynamic) const;
300   void getSectionNameIndex(const Elf_Sym *Symbol, const Elf_Sym *FirstSym,
301                            StringRef &SectionName,
302                            unsigned &SectionIndex) const;
303   std::string getStaticSymbolName(uint32_t Index) const;
304   std::string getDynamicString(uint64_t Value) const;
305   StringRef getSymbolVersionByIndex(StringRef StrTab,
306                                     uint32_t VersionSymbolIndex,
307                                     bool &IsDefault) const;
308 
309   void printSymbolsHelper(bool IsDynamic) const;
310   void printDynamicEntry(raw_ostream &OS, uint64_t Type, uint64_t Value) const;
311 
312   const Elf_Shdr *getDotSymtabSec() const { return DotSymtabSec; }
313   const Elf_Shdr *getDotCGProfileSec() const { return DotCGProfileSec; }
314   const Elf_Shdr *getDotAddrsigSec() const { return DotAddrsigSec; }
315   ArrayRef<Elf_Word> getShndxTable() const { return ShndxTable; }
316   StringRef getDynamicStringTable() const { return DynamicStringTable; }
317   const DynRegionInfo &getDynRelRegion() const { return DynRelRegion; }
318   const DynRegionInfo &getDynRelaRegion() const { return DynRelaRegion; }
319   const DynRegionInfo &getDynRelrRegion() const { return DynRelrRegion; }
320   const DynRegionInfo &getDynPLTRelRegion() const { return DynPLTRelRegion; }
321   const DynRegionInfo &getDynamicTableRegion() const { return DynamicTable; }
322   const Elf_Hash *getHashTable() const { return HashTable; }
323   const Elf_GnuHash *getGnuHashTable() const { return GnuHashTable; }
324 };
325 
326 template <class ELFT>
327 void ELFDumper<ELFT>::printSymbolsHelper(bool IsDynamic) const {
328   StringRef StrTable, SymtabName;
329   size_t Entries = 0;
330   Elf_Sym_Range Syms(nullptr, nullptr);
331   const ELFFile<ELFT> *Obj = ObjF->getELFFile();
332   if (IsDynamic) {
333     StrTable = DynamicStringTable;
334     Syms = dynamic_symbols();
335     SymtabName = DynSymtabName;
336     if (DynSymRegion.Addr)
337       Entries = DynSymRegion.Size / DynSymRegion.EntSize;
338   } else {
339     if (!DotSymtabSec)
340       return;
341     StrTable = unwrapOrError(ObjF->getFileName(),
342                              Obj->getStringTableForSymtab(*DotSymtabSec));
343     Syms = unwrapOrError(ObjF->getFileName(), Obj->symbols(DotSymtabSec));
344     SymtabName =
345         unwrapOrError(ObjF->getFileName(), Obj->getSectionName(DotSymtabSec));
346     Entries = DotSymtabSec->getEntityCount();
347   }
348   if (Syms.begin() == Syms.end())
349     return;
350   ELFDumperStyle->printSymtabMessage(Obj, SymtabName, Entries);
351   for (const auto &Sym : Syms)
352     ELFDumperStyle->printSymbol(Obj, &Sym, Syms.begin(), StrTable, IsDynamic);
353 }
354 
355 template <class ELFT> class MipsGOTParser;
356 
357 template <typename ELFT> class DumpStyle {
358 public:
359   using Elf_Shdr = typename ELFT::Shdr;
360   using Elf_Sym = typename ELFT::Sym;
361   using Elf_Addr = typename ELFT::Addr;
362 
363   DumpStyle(ELFDumper<ELFT> *Dumper) : Dumper(Dumper) {
364     FileName = this->Dumper->getElfObject()->getFileName();
365 
366     // Dumper reports all non-critical errors as warnings.
367     // It does not print the same warning more than once.
368     WarningHandler = [this](const Twine &Msg) {
369       if (Warnings.insert(Msg.str()).second)
370         reportWarning(createError(Msg), FileName);
371       return Error::success();
372     };
373   }
374 
375   virtual ~DumpStyle() = default;
376 
377   virtual void printFileHeaders(const ELFFile<ELFT> *Obj) = 0;
378   virtual void printGroupSections(const ELFFile<ELFT> *Obj) = 0;
379   virtual void printRelocations(const ELFFile<ELFT> *Obj) = 0;
380   virtual void printSectionHeaders(const ELFFile<ELFT> *Obj) = 0;
381   virtual void printSymbols(const ELFFile<ELFT> *Obj, bool PrintSymbols,
382                             bool PrintDynamicSymbols) = 0;
383   virtual void printHashSymbols(const ELFFile<ELFT> *Obj) {}
384   virtual void printDynamic(const ELFFile<ELFT> *Obj) {}
385   virtual void printDynamicRelocations(const ELFFile<ELFT> *Obj) = 0;
386   virtual void printSymtabMessage(const ELFFile<ELFT> *Obj, StringRef Name,
387                                   size_t Offset) {}
388   virtual void printSymbol(const ELFFile<ELFT> *Obj, const Elf_Sym *Symbol,
389                            const Elf_Sym *FirstSym, StringRef StrTable,
390                            bool IsDynamic) = 0;
391   virtual void printProgramHeaders(const ELFFile<ELFT> *Obj,
392                                    bool PrintProgramHeaders,
393                                    cl::boolOrDefault PrintSectionMapping) = 0;
394   virtual void printVersionSymbolSection(const ELFFile<ELFT> *Obj,
395                                          const Elf_Shdr *Sec) = 0;
396   virtual void printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
397                                              const Elf_Shdr *Sec) = 0;
398   virtual void printVersionDependencySection(const ELFFile<ELFT> *Obj,
399                                              const Elf_Shdr *Sec) = 0;
400   virtual void printHashHistogram(const ELFFile<ELFT> *Obj) = 0;
401   virtual void printCGProfile(const ELFFile<ELFT> *Obj) = 0;
402   virtual void printAddrsig(const ELFFile<ELFT> *Obj) = 0;
403   virtual void printNotes(const ELFFile<ELFT> *Obj) = 0;
404   virtual void printELFLinkerOptions(const ELFFile<ELFT> *Obj) = 0;
405   virtual void printStackSizes(const ELFObjectFile<ELFT> *Obj) = 0;
406   void printNonRelocatableStackSizes(const ELFObjectFile<ELFT> *Obj,
407                                      std::function<void()> PrintHeader);
408   void printRelocatableStackSizes(const ELFObjectFile<ELFT> *Obj,
409                                   std::function<void()> PrintHeader);
410   void printFunctionStackSize(const ELFObjectFile<ELFT> *Obj, uint64_t SymValue,
411                               SectionRef FunctionSec,
412                               const StringRef SectionName, DataExtractor Data,
413                               uint64_t *Offset);
414   void printStackSize(const ELFObjectFile<ELFT> *Obj, RelocationRef Rel,
415                       SectionRef FunctionSec,
416                       const StringRef &StackSizeSectionName,
417                       const RelocationResolver &Resolver, DataExtractor Data);
418   virtual void printStackSizeEntry(uint64_t Size, StringRef FuncName) = 0;
419   virtual void printMipsGOT(const MipsGOTParser<ELFT> &Parser) = 0;
420   virtual void printMipsPLT(const MipsGOTParser<ELFT> &Parser) = 0;
421   const ELFDumper<ELFT> *dumper() const { return Dumper; }
422 
423 protected:
424   std::function<Error(const Twine &Msg)> WarningHandler;
425   StringRef FileName;
426 
427 private:
428   std::unordered_set<std::string> Warnings;
429   const ELFDumper<ELFT> *Dumper;
430 };
431 
432 template <typename ELFT> class GNUStyle : public DumpStyle<ELFT> {
433   formatted_raw_ostream &OS;
434 
435 public:
436   TYPEDEF_ELF_TYPES(ELFT)
437 
438   GNUStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper)
439       : DumpStyle<ELFT>(Dumper),
440         OS(static_cast<formatted_raw_ostream&>(W.getOStream())) {
441     assert (&W.getOStream() == &llvm::fouts());
442   }
443 
444   void printFileHeaders(const ELFO *Obj) override;
445   void printGroupSections(const ELFFile<ELFT> *Obj) override;
446   void printRelocations(const ELFO *Obj) override;
447   void printSectionHeaders(const ELFO *Obj) override;
448   void printSymbols(const ELFO *Obj, bool PrintSymbols,
449                     bool PrintDynamicSymbols) override;
450   void printHashSymbols(const ELFO *Obj) override;
451   void printDynamic(const ELFFile<ELFT> *Obj) override;
452   void printDynamicRelocations(const ELFO *Obj) override;
453   void printSymtabMessage(const ELFO *Obj, StringRef Name,
454                           size_t Offset) override;
455   void printProgramHeaders(const ELFO *Obj, bool PrintProgramHeaders,
456                            cl::boolOrDefault PrintSectionMapping) override;
457   void printVersionSymbolSection(const ELFFile<ELFT> *Obj,
458                                  const Elf_Shdr *Sec) override;
459   void printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
460                                      const Elf_Shdr *Sec) override;
461   void printVersionDependencySection(const ELFFile<ELFT> *Obj,
462                                      const Elf_Shdr *Sec) override;
463   void printHashHistogram(const ELFFile<ELFT> *Obj) override;
464   void printCGProfile(const ELFFile<ELFT> *Obj) override;
465   void printAddrsig(const ELFFile<ELFT> *Obj) override;
466   void printNotes(const ELFFile<ELFT> *Obj) override;
467   void printELFLinkerOptions(const ELFFile<ELFT> *Obj) override;
468   void printStackSizes(const ELFObjectFile<ELFT> *Obj) override;
469   void printStackSizeEntry(uint64_t Size, StringRef FuncName) override;
470   void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override;
471   void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override;
472 
473 private:
474   struct Field {
475     std::string Str;
476     unsigned Column;
477 
478     Field(StringRef S, unsigned Col) : Str(S), Column(Col) {}
479     Field(unsigned Col) : Column(Col) {}
480   };
481 
482   template <typename T, typename TEnum>
483   std::string printEnum(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues) {
484     for (const auto &EnumItem : EnumValues)
485       if (EnumItem.Value == Value)
486         return EnumItem.AltName;
487     return to_hexString(Value, false);
488   }
489 
490   template <typename T, typename TEnum>
491   std::string printFlags(T Value, ArrayRef<EnumEntry<TEnum>> EnumValues,
492                          TEnum EnumMask1 = {}, TEnum EnumMask2 = {},
493                          TEnum EnumMask3 = {}) {
494     std::string Str;
495     for (const auto &Flag : EnumValues) {
496       if (Flag.Value == 0)
497         continue;
498 
499       TEnum EnumMask{};
500       if (Flag.Value & EnumMask1)
501         EnumMask = EnumMask1;
502       else if (Flag.Value & EnumMask2)
503         EnumMask = EnumMask2;
504       else if (Flag.Value & EnumMask3)
505         EnumMask = EnumMask3;
506       bool IsEnum = (Flag.Value & EnumMask) != 0;
507       if ((!IsEnum && (Value & Flag.Value) == Flag.Value) ||
508           (IsEnum && (Value & EnumMask) == Flag.Value)) {
509         if (!Str.empty())
510           Str += ", ";
511         Str += Flag.AltName;
512       }
513     }
514     return Str;
515   }
516 
517   formatted_raw_ostream &printField(struct Field F) {
518     if (F.Column != 0)
519       OS.PadToColumn(F.Column);
520     OS << F.Str;
521     OS.flush();
522     return OS;
523   }
524   void printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym, uint32_t Sym,
525                          StringRef StrTable, uint32_t Bucket);
526   void printRelocHeader(unsigned SType);
527   void printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab,
528                        const Elf_Rela &R, bool IsRela);
529   void printRelocation(const ELFO *Obj, const Elf_Sym *Sym,
530                        StringRef SymbolName, const Elf_Rela &R, bool IsRela);
531   void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First,
532                    StringRef StrTable, bool IsDynamic) override;
533   std::string getSymbolSectionNdx(const ELFO *Obj, const Elf_Sym *Symbol,
534                                   const Elf_Sym *FirstSym);
535   void printDynamicRelocation(const ELFO *Obj, Elf_Rela R, bool IsRela);
536   bool checkTLSSections(const Elf_Phdr &Phdr, const Elf_Shdr &Sec);
537   bool checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec);
538   bool checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec);
539   bool checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec);
540   void printProgramHeaders(const ELFO *Obj);
541   void printSectionMapping(const ELFO *Obj);
542 };
543 
544 template <typename ELFT> class LLVMStyle : public DumpStyle<ELFT> {
545 public:
546   TYPEDEF_ELF_TYPES(ELFT)
547 
548   LLVMStyle(ScopedPrinter &W, ELFDumper<ELFT> *Dumper)
549       : DumpStyle<ELFT>(Dumper), W(W) {}
550 
551   void printFileHeaders(const ELFO *Obj) override;
552   void printGroupSections(const ELFFile<ELFT> *Obj) override;
553   void printRelocations(const ELFO *Obj) override;
554   void printRelocations(const Elf_Shdr *Sec, const ELFO *Obj);
555   void printSectionHeaders(const ELFO *Obj) override;
556   void printSymbols(const ELFO *Obj, bool PrintSymbols,
557                     bool PrintDynamicSymbols) override;
558   void printDynamic(const ELFFile<ELFT> *Obj) override;
559   void printDynamicRelocations(const ELFO *Obj) override;
560   void printProgramHeaders(const ELFO *Obj, bool PrintProgramHeaders,
561                            cl::boolOrDefault PrintSectionMapping) override;
562   void printVersionSymbolSection(const ELFFile<ELFT> *Obj,
563                                  const Elf_Shdr *Sec) override;
564   void printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
565                                      const Elf_Shdr *Sec) override;
566   void printVersionDependencySection(const ELFFile<ELFT> *Obj,
567                                      const Elf_Shdr *Sec) override;
568   void printHashHistogram(const ELFFile<ELFT> *Obj) override;
569   void printCGProfile(const ELFFile<ELFT> *Obj) override;
570   void printAddrsig(const ELFFile<ELFT> *Obj) override;
571   void printNotes(const ELFFile<ELFT> *Obj) override;
572   void printELFLinkerOptions(const ELFFile<ELFT> *Obj) override;
573   void printStackSizes(const ELFObjectFile<ELFT> *Obj) override;
574   void printStackSizeEntry(uint64_t Size, StringRef FuncName) override;
575   void printMipsGOT(const MipsGOTParser<ELFT> &Parser) override;
576   void printMipsPLT(const MipsGOTParser<ELFT> &Parser) override;
577 
578 private:
579   void printRelocation(const ELFO *Obj, Elf_Rela Rel, const Elf_Shdr *SymTab);
580   void printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel);
581   void printSymbols(const ELFO *Obj);
582   void printDynamicSymbols(const ELFO *Obj);
583   void printSymbol(const ELFO *Obj, const Elf_Sym *Symbol, const Elf_Sym *First,
584                    StringRef StrTable, bool IsDynamic) override;
585   void printProgramHeaders(const ELFO *Obj);
586   void printSectionMapping(const ELFO *Obj) {}
587 
588   ScopedPrinter &W;
589 };
590 
591 } // end anonymous namespace
592 
593 namespace llvm {
594 
595 template <class ELFT>
596 static std::error_code createELFDumper(const ELFObjectFile<ELFT> *Obj,
597                                        ScopedPrinter &Writer,
598                                        std::unique_ptr<ObjDumper> &Result) {
599   Result.reset(new ELFDumper<ELFT>(Obj, Writer));
600   return readobj_error::success;
601 }
602 
603 std::error_code createELFDumper(const object::ObjectFile *Obj,
604                                 ScopedPrinter &Writer,
605                                 std::unique_ptr<ObjDumper> &Result) {
606   // Little-endian 32-bit
607   if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
608     return createELFDumper(ELFObj, Writer, Result);
609 
610   // Big-endian 32-bit
611   if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
612     return createELFDumper(ELFObj, Writer, Result);
613 
614   // Little-endian 64-bit
615   if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
616     return createELFDumper(ELFObj, Writer, Result);
617 
618   // Big-endian 64-bit
619   if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
620     return createELFDumper(ELFObj, Writer, Result);
621 
622   return readobj_error::unsupported_obj_file_format;
623 }
624 
625 } // end namespace llvm
626 
627 // Iterate through the versions needed section, and place each Elf_Vernaux
628 // in the VersionMap according to its index.
629 template <class ELFT>
630 void ELFDumper<ELFT>::LoadVersionNeeds(const Elf_Shdr *Sec) const {
631   unsigned VerneedSize = Sec->sh_size;    // Size of section in bytes
632   unsigned VerneedEntries = Sec->sh_info; // Number of Verneed entries
633   const uint8_t *VerneedStart = reinterpret_cast<const uint8_t *>(
634       ObjF->getELFFile()->base() + Sec->sh_offset);
635   const uint8_t *VerneedEnd = VerneedStart + VerneedSize;
636   // The first Verneed entry is at the start of the section.
637   const uint8_t *VerneedBuf = VerneedStart;
638   for (unsigned VerneedIndex = 0; VerneedIndex < VerneedEntries;
639        ++VerneedIndex) {
640     if (VerneedBuf + sizeof(Elf_Verneed) > VerneedEnd)
641       report_fatal_error("Section ended unexpectedly while scanning "
642                          "version needed records.");
643     const Elf_Verneed *Verneed =
644         reinterpret_cast<const Elf_Verneed *>(VerneedBuf);
645     if (Verneed->vn_version != ELF::VER_NEED_CURRENT)
646       report_fatal_error("Unexpected verneed version");
647     // Iterate through the Vernaux entries
648     const uint8_t *VernauxBuf = VerneedBuf + Verneed->vn_aux;
649     for (unsigned VernauxIndex = 0; VernauxIndex < Verneed->vn_cnt;
650          ++VernauxIndex) {
651       if (VernauxBuf + sizeof(Elf_Vernaux) > VerneedEnd)
652         report_fatal_error("Section ended unexpected while scanning auxiliary "
653                            "version needed records.");
654       const Elf_Vernaux *Vernaux =
655           reinterpret_cast<const Elf_Vernaux *>(VernauxBuf);
656       size_t Index = Vernaux->vna_other & ELF::VERSYM_VERSION;
657       if (Index >= VersionMap.size())
658         VersionMap.resize(Index + 1);
659       VersionMap[Index] = VersionMapEntry(Vernaux);
660       VernauxBuf += Vernaux->vna_next;
661     }
662     VerneedBuf += Verneed->vn_next;
663   }
664 }
665 
666 // Iterate through the version definitions, and place each Elf_Verdef
667 // in the VersionMap according to its index.
668 template <class ELFT>
669 void ELFDumper<ELFT>::LoadVersionDefs(const Elf_Shdr *Sec) const {
670   unsigned VerdefSize = Sec->sh_size;    // Size of section in bytes
671   unsigned VerdefEntries = Sec->sh_info; // Number of Verdef entries
672   const uint8_t *VerdefStart = reinterpret_cast<const uint8_t *>(
673       ObjF->getELFFile()->base() + Sec->sh_offset);
674   const uint8_t *VerdefEnd = VerdefStart + VerdefSize;
675   // The first Verdef entry is at the start of the section.
676   const uint8_t *VerdefBuf = VerdefStart;
677   for (unsigned VerdefIndex = 0; VerdefIndex < VerdefEntries; ++VerdefIndex) {
678     if (VerdefBuf + sizeof(Elf_Verdef) > VerdefEnd)
679       report_fatal_error("Section ended unexpectedly while scanning "
680                          "version definitions.");
681     const Elf_Verdef *Verdef = reinterpret_cast<const Elf_Verdef *>(VerdefBuf);
682     if (Verdef->vd_version != ELF::VER_DEF_CURRENT)
683       report_fatal_error("Unexpected verdef version");
684     size_t Index = Verdef->vd_ndx & ELF::VERSYM_VERSION;
685     if (Index >= VersionMap.size())
686       VersionMap.resize(Index + 1);
687     VersionMap[Index] = VersionMapEntry(Verdef);
688     VerdefBuf += Verdef->vd_next;
689   }
690 }
691 
692 template <class ELFT> void ELFDumper<ELFT>::LoadVersionMap() const {
693   // If there is no dynamic symtab or version table, there is nothing to do.
694   if (!DynSymRegion.Addr || !SymbolVersionSection)
695     return;
696 
697   // Has the VersionMap already been loaded?
698   if (!VersionMap.empty())
699     return;
700 
701   // The first two version indexes are reserved.
702   // Index 0 is LOCAL, index 1 is GLOBAL.
703   VersionMap.push_back(VersionMapEntry());
704   VersionMap.push_back(VersionMapEntry());
705 
706   if (SymbolVersionDefSection)
707     LoadVersionDefs(SymbolVersionDefSection);
708 
709   if (SymbolVersionNeedSection)
710     LoadVersionNeeds(SymbolVersionNeedSection);
711 }
712 
713 template <typename ELFT>
714 StringRef ELFDumper<ELFT>::getSymbolVersion(StringRef StrTab,
715                                             const Elf_Sym *Sym,
716                                             bool &IsDefault) const {
717   // This is a dynamic symbol. Look in the GNU symbol version table.
718   if (!SymbolVersionSection) {
719     // No version table.
720     IsDefault = false;
721     return "";
722   }
723 
724   // Determine the position in the symbol table of this entry.
725   size_t EntryIndex = (reinterpret_cast<uintptr_t>(Sym) -
726                         reinterpret_cast<uintptr_t>(DynSymRegion.Addr)) /
727                        sizeof(Elf_Sym);
728 
729   // Get the corresponding version index entry.
730   const Elf_Versym *Versym = unwrapOrError(
731       ObjF->getFileName(), ObjF->getELFFile()->template getEntry<Elf_Versym>(
732                                SymbolVersionSection, EntryIndex));
733   return this->getSymbolVersionByIndex(StrTab, Versym->vs_index, IsDefault);
734 }
735 
736 static std::string maybeDemangle(StringRef Name) {
737   return opts::Demangle ? demangle(Name) : Name.str();
738 }
739 
740 template <typename ELFT>
741 std::string ELFDumper<ELFT>::getStaticSymbolName(uint32_t Index) const {
742   const ELFFile<ELFT> *Obj = ObjF->getELFFile();
743   StringRef StrTable = unwrapOrError(
744       ObjF->getFileName(), Obj->getStringTableForSymtab(*DotSymtabSec));
745   Elf_Sym_Range Syms =
746       unwrapOrError(ObjF->getFileName(), Obj->symbols(DotSymtabSec));
747   if (Index >= Syms.size())
748     reportError(createError("Invalid symbol index"), ObjF->getFileName());
749   const Elf_Sym *Sym = &Syms[Index];
750   return maybeDemangle(
751       unwrapOrError(ObjF->getFileName(), Sym->getName(StrTable)));
752 }
753 
754 template <typename ELFT>
755 StringRef ELFDumper<ELFT>::getSymbolVersionByIndex(StringRef StrTab,
756                                                    uint32_t SymbolVersionIndex,
757                                                    bool &IsDefault) const {
758   size_t VersionIndex = SymbolVersionIndex & VERSYM_VERSION;
759 
760   // Special markers for unversioned symbols.
761   if (VersionIndex == VER_NDX_LOCAL || VersionIndex == VER_NDX_GLOBAL) {
762     IsDefault = false;
763     return "";
764   }
765 
766   // Lookup this symbol in the version table.
767   LoadVersionMap();
768   if (VersionIndex >= VersionMap.size() || VersionMap[VersionIndex].isNull())
769     reportError(createError("Invalid version entry"), ObjF->getFileName());
770   const VersionMapEntry &Entry = VersionMap[VersionIndex];
771 
772   // Get the version name string.
773   size_t NameOffset;
774   if (Entry.isVerdef()) {
775     // The first Verdaux entry holds the name.
776     NameOffset = Entry.getVerdef()->getAux()->vda_name;
777     IsDefault = !(SymbolVersionIndex & VERSYM_HIDDEN);
778   } else {
779     NameOffset = Entry.getVernaux()->vna_name;
780     IsDefault = false;
781   }
782   if (NameOffset >= StrTab.size())
783     reportError(createError("Invalid string offset"), ObjF->getFileName());
784   return StrTab.data() + NameOffset;
785 }
786 
787 template <typename ELFT>
788 std::string ELFDumper<ELFT>::getFullSymbolName(const Elf_Sym *Symbol,
789                                                StringRef StrTable,
790                                                bool IsDynamic) const {
791   std::string SymbolName = maybeDemangle(
792       unwrapOrError(ObjF->getFileName(), Symbol->getName(StrTable)));
793 
794   if (SymbolName.empty() && Symbol->getType() == ELF::STT_SECTION) {
795     unsigned SectionIndex;
796     StringRef SectionName;
797     Elf_Sym_Range Syms = unwrapOrError(
798         ObjF->getFileName(), ObjF->getELFFile()->symbols(DotSymtabSec));
799     getSectionNameIndex(Symbol, Syms.begin(), SectionName, SectionIndex);
800     return SectionName;
801   }
802 
803   if (!IsDynamic)
804     return SymbolName;
805 
806   bool IsDefault;
807   StringRef Version = getSymbolVersion(StrTable, &*Symbol, IsDefault);
808   if (!Version.empty()) {
809     SymbolName += (IsDefault ? "@@" : "@");
810     SymbolName += Version;
811   }
812   return SymbolName;
813 }
814 
815 template <typename ELFT>
816 void ELFDumper<ELFT>::getSectionNameIndex(const Elf_Sym *Symbol,
817                                           const Elf_Sym *FirstSym,
818                                           StringRef &SectionName,
819                                           unsigned &SectionIndex) const {
820   SectionIndex = Symbol->st_shndx;
821   if (Symbol->isUndefined())
822     SectionName = "Undefined";
823   else if (Symbol->isProcessorSpecific())
824     SectionName = "Processor Specific";
825   else if (Symbol->isOSSpecific())
826     SectionName = "Operating System Specific";
827   else if (Symbol->isAbsolute())
828     SectionName = "Absolute";
829   else if (Symbol->isCommon())
830     SectionName = "Common";
831   else if (Symbol->isReserved() && SectionIndex != SHN_XINDEX)
832     SectionName = "Reserved";
833   else {
834     if (SectionIndex == SHN_XINDEX)
835       SectionIndex = unwrapOrError(ObjF->getFileName(),
836                                    object::getExtendedSymbolTableIndex<ELFT>(
837                                        Symbol, FirstSym, ShndxTable));
838     const ELFFile<ELFT> *Obj = ObjF->getELFFile();
839     const typename ELFT::Shdr *Sec =
840         unwrapOrError(ObjF->getFileName(), Obj->getSection(SectionIndex));
841     SectionName = unwrapOrError(ObjF->getFileName(), Obj->getSectionName(Sec));
842   }
843 }
844 
845 template <class ELFO>
846 static const typename ELFO::Elf_Shdr *
847 findNotEmptySectionByAddress(const ELFO *Obj, StringRef FileName,
848                              uint64_t Addr) {
849   for (const auto &Shdr : unwrapOrError(FileName, Obj->sections()))
850     if (Shdr.sh_addr == Addr && Shdr.sh_size > 0)
851       return &Shdr;
852   return nullptr;
853 }
854 
855 template <class ELFO>
856 static const typename ELFO::Elf_Shdr *
857 findSectionByName(const ELFO &Obj, StringRef FileName, StringRef Name) {
858   for (const auto &Shdr : unwrapOrError(FileName, Obj.sections()))
859     if (Name == unwrapOrError(FileName, Obj.getSectionName(&Shdr)))
860       return &Shdr;
861   return nullptr;
862 }
863 
864 static const EnumEntry<unsigned> ElfClass[] = {
865   {"None",   "none",   ELF::ELFCLASSNONE},
866   {"32-bit", "ELF32",  ELF::ELFCLASS32},
867   {"64-bit", "ELF64",  ELF::ELFCLASS64},
868 };
869 
870 static const EnumEntry<unsigned> ElfDataEncoding[] = {
871   {"None",         "none",                          ELF::ELFDATANONE},
872   {"LittleEndian", "2's complement, little endian", ELF::ELFDATA2LSB},
873   {"BigEndian",    "2's complement, big endian",    ELF::ELFDATA2MSB},
874 };
875 
876 static const EnumEntry<unsigned> ElfObjectFileType[] = {
877   {"None",         "NONE (none)",              ELF::ET_NONE},
878   {"Relocatable",  "REL (Relocatable file)",   ELF::ET_REL},
879   {"Executable",   "EXEC (Executable file)",   ELF::ET_EXEC},
880   {"SharedObject", "DYN (Shared object file)", ELF::ET_DYN},
881   {"Core",         "CORE (Core file)",         ELF::ET_CORE},
882 };
883 
884 static const EnumEntry<unsigned> ElfOSABI[] = {
885   {"SystemV",      "UNIX - System V",      ELF::ELFOSABI_NONE},
886   {"HPUX",         "UNIX - HP-UX",         ELF::ELFOSABI_HPUX},
887   {"NetBSD",       "UNIX - NetBSD",        ELF::ELFOSABI_NETBSD},
888   {"GNU/Linux",    "UNIX - GNU",           ELF::ELFOSABI_LINUX},
889   {"GNU/Hurd",     "GNU/Hurd",             ELF::ELFOSABI_HURD},
890   {"Solaris",      "UNIX - Solaris",       ELF::ELFOSABI_SOLARIS},
891   {"AIX",          "UNIX - AIX",           ELF::ELFOSABI_AIX},
892   {"IRIX",         "UNIX - IRIX",          ELF::ELFOSABI_IRIX},
893   {"FreeBSD",      "UNIX - FreeBSD",       ELF::ELFOSABI_FREEBSD},
894   {"TRU64",        "UNIX - TRU64",         ELF::ELFOSABI_TRU64},
895   {"Modesto",      "Novell - Modesto",     ELF::ELFOSABI_MODESTO},
896   {"OpenBSD",      "UNIX - OpenBSD",       ELF::ELFOSABI_OPENBSD},
897   {"OpenVMS",      "VMS - OpenVMS",        ELF::ELFOSABI_OPENVMS},
898   {"NSK",          "HP - Non-Stop Kernel", ELF::ELFOSABI_NSK},
899   {"AROS",         "AROS",                 ELF::ELFOSABI_AROS},
900   {"FenixOS",      "FenixOS",              ELF::ELFOSABI_FENIXOS},
901   {"CloudABI",     "CloudABI",             ELF::ELFOSABI_CLOUDABI},
902   {"Standalone",   "Standalone App",       ELF::ELFOSABI_STANDALONE}
903 };
904 
905 static const EnumEntry<unsigned> SymVersionFlags[] = {
906     {"Base", "BASE", VER_FLG_BASE},
907     {"Weak", "WEAK", VER_FLG_WEAK},
908     {"Info", "INFO", VER_FLG_INFO}};
909 
910 static const EnumEntry<unsigned> AMDGPUElfOSABI[] = {
911   {"AMDGPU_HSA",    "AMDGPU - HSA",    ELF::ELFOSABI_AMDGPU_HSA},
912   {"AMDGPU_PAL",    "AMDGPU - PAL",    ELF::ELFOSABI_AMDGPU_PAL},
913   {"AMDGPU_MESA3D", "AMDGPU - MESA3D", ELF::ELFOSABI_AMDGPU_MESA3D}
914 };
915 
916 static const EnumEntry<unsigned> ARMElfOSABI[] = {
917   {"ARM", "ARM", ELF::ELFOSABI_ARM}
918 };
919 
920 static const EnumEntry<unsigned> C6000ElfOSABI[] = {
921   {"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI},
922   {"C6000_LINUX",  "Linux C6000",      ELF::ELFOSABI_C6000_LINUX}
923 };
924 
925 static const EnumEntry<unsigned> ElfMachineType[] = {
926   ENUM_ENT(EM_NONE,          "None"),
927   ENUM_ENT(EM_M32,           "WE32100"),
928   ENUM_ENT(EM_SPARC,         "Sparc"),
929   ENUM_ENT(EM_386,           "Intel 80386"),
930   ENUM_ENT(EM_68K,           "MC68000"),
931   ENUM_ENT(EM_88K,           "MC88000"),
932   ENUM_ENT(EM_IAMCU,         "EM_IAMCU"),
933   ENUM_ENT(EM_860,           "Intel 80860"),
934   ENUM_ENT(EM_MIPS,          "MIPS R3000"),
935   ENUM_ENT(EM_S370,          "IBM System/370"),
936   ENUM_ENT(EM_MIPS_RS3_LE,   "MIPS R3000 little-endian"),
937   ENUM_ENT(EM_PARISC,        "HPPA"),
938   ENUM_ENT(EM_VPP500,        "Fujitsu VPP500"),
939   ENUM_ENT(EM_SPARC32PLUS,   "Sparc v8+"),
940   ENUM_ENT(EM_960,           "Intel 80960"),
941   ENUM_ENT(EM_PPC,           "PowerPC"),
942   ENUM_ENT(EM_PPC64,         "PowerPC64"),
943   ENUM_ENT(EM_S390,          "IBM S/390"),
944   ENUM_ENT(EM_SPU,           "SPU"),
945   ENUM_ENT(EM_V800,          "NEC V800 series"),
946   ENUM_ENT(EM_FR20,          "Fujistsu FR20"),
947   ENUM_ENT(EM_RH32,          "TRW RH-32"),
948   ENUM_ENT(EM_RCE,           "Motorola RCE"),
949   ENUM_ENT(EM_ARM,           "ARM"),
950   ENUM_ENT(EM_ALPHA,         "EM_ALPHA"),
951   ENUM_ENT(EM_SH,            "Hitachi SH"),
952   ENUM_ENT(EM_SPARCV9,       "Sparc v9"),
953   ENUM_ENT(EM_TRICORE,       "Siemens Tricore"),
954   ENUM_ENT(EM_ARC,           "ARC"),
955   ENUM_ENT(EM_H8_300,        "Hitachi H8/300"),
956   ENUM_ENT(EM_H8_300H,       "Hitachi H8/300H"),
957   ENUM_ENT(EM_H8S,           "Hitachi H8S"),
958   ENUM_ENT(EM_H8_500,        "Hitachi H8/500"),
959   ENUM_ENT(EM_IA_64,         "Intel IA-64"),
960   ENUM_ENT(EM_MIPS_X,        "Stanford MIPS-X"),
961   ENUM_ENT(EM_COLDFIRE,      "Motorola Coldfire"),
962   ENUM_ENT(EM_68HC12,        "Motorola MC68HC12 Microcontroller"),
963   ENUM_ENT(EM_MMA,           "Fujitsu Multimedia Accelerator"),
964   ENUM_ENT(EM_PCP,           "Siemens PCP"),
965   ENUM_ENT(EM_NCPU,          "Sony nCPU embedded RISC processor"),
966   ENUM_ENT(EM_NDR1,          "Denso NDR1 microprocesspr"),
967   ENUM_ENT(EM_STARCORE,      "Motorola Star*Core processor"),
968   ENUM_ENT(EM_ME16,          "Toyota ME16 processor"),
969   ENUM_ENT(EM_ST100,         "STMicroelectronics ST100 processor"),
970   ENUM_ENT(EM_TINYJ,         "Advanced Logic Corp. TinyJ embedded processor"),
971   ENUM_ENT(EM_X86_64,        "Advanced Micro Devices X86-64"),
972   ENUM_ENT(EM_PDSP,          "Sony DSP processor"),
973   ENUM_ENT(EM_PDP10,         "Digital Equipment Corp. PDP-10"),
974   ENUM_ENT(EM_PDP11,         "Digital Equipment Corp. PDP-11"),
975   ENUM_ENT(EM_FX66,          "Siemens FX66 microcontroller"),
976   ENUM_ENT(EM_ST9PLUS,       "STMicroelectronics ST9+ 8/16 bit microcontroller"),
977   ENUM_ENT(EM_ST7,           "STMicroelectronics ST7 8-bit microcontroller"),
978   ENUM_ENT(EM_68HC16,        "Motorola MC68HC16 Microcontroller"),
979   ENUM_ENT(EM_68HC11,        "Motorola MC68HC11 Microcontroller"),
980   ENUM_ENT(EM_68HC08,        "Motorola MC68HC08 Microcontroller"),
981   ENUM_ENT(EM_68HC05,        "Motorola MC68HC05 Microcontroller"),
982   ENUM_ENT(EM_SVX,           "Silicon Graphics SVx"),
983   ENUM_ENT(EM_ST19,          "STMicroelectronics ST19 8-bit microcontroller"),
984   ENUM_ENT(EM_VAX,           "Digital VAX"),
985   ENUM_ENT(EM_CRIS,          "Axis Communications 32-bit embedded processor"),
986   ENUM_ENT(EM_JAVELIN,       "Infineon Technologies 32-bit embedded cpu"),
987   ENUM_ENT(EM_FIREPATH,      "Element 14 64-bit DSP processor"),
988   ENUM_ENT(EM_ZSP,           "LSI Logic's 16-bit DSP processor"),
989   ENUM_ENT(EM_MMIX,          "Donald Knuth's educational 64-bit processor"),
990   ENUM_ENT(EM_HUANY,         "Harvard Universitys's machine-independent object format"),
991   ENUM_ENT(EM_PRISM,         "Vitesse Prism"),
992   ENUM_ENT(EM_AVR,           "Atmel AVR 8-bit microcontroller"),
993   ENUM_ENT(EM_FR30,          "Fujitsu FR30"),
994   ENUM_ENT(EM_D10V,          "Mitsubishi D10V"),
995   ENUM_ENT(EM_D30V,          "Mitsubishi D30V"),
996   ENUM_ENT(EM_V850,          "NEC v850"),
997   ENUM_ENT(EM_M32R,          "Renesas M32R (formerly Mitsubishi M32r)"),
998   ENUM_ENT(EM_MN10300,       "Matsushita MN10300"),
999   ENUM_ENT(EM_MN10200,       "Matsushita MN10200"),
1000   ENUM_ENT(EM_PJ,            "picoJava"),
1001   ENUM_ENT(EM_OPENRISC,      "OpenRISC 32-bit embedded processor"),
1002   ENUM_ENT(EM_ARC_COMPACT,   "EM_ARC_COMPACT"),
1003   ENUM_ENT(EM_XTENSA,        "Tensilica Xtensa Processor"),
1004   ENUM_ENT(EM_VIDEOCORE,     "Alphamosaic VideoCore processor"),
1005   ENUM_ENT(EM_TMM_GPP,       "Thompson Multimedia General Purpose Processor"),
1006   ENUM_ENT(EM_NS32K,         "National Semiconductor 32000 series"),
1007   ENUM_ENT(EM_TPC,           "Tenor Network TPC processor"),
1008   ENUM_ENT(EM_SNP1K,         "EM_SNP1K"),
1009   ENUM_ENT(EM_ST200,         "STMicroelectronics ST200 microcontroller"),
1010   ENUM_ENT(EM_IP2K,          "Ubicom IP2xxx 8-bit microcontrollers"),
1011   ENUM_ENT(EM_MAX,           "MAX Processor"),
1012   ENUM_ENT(EM_CR,            "National Semiconductor CompactRISC"),
1013   ENUM_ENT(EM_F2MC16,        "Fujitsu F2MC16"),
1014   ENUM_ENT(EM_MSP430,        "Texas Instruments msp430 microcontroller"),
1015   ENUM_ENT(EM_BLACKFIN,      "Analog Devices Blackfin"),
1016   ENUM_ENT(EM_SE_C33,        "S1C33 Family of Seiko Epson processors"),
1017   ENUM_ENT(EM_SEP,           "Sharp embedded microprocessor"),
1018   ENUM_ENT(EM_ARCA,          "Arca RISC microprocessor"),
1019   ENUM_ENT(EM_UNICORE,       "Unicore"),
1020   ENUM_ENT(EM_EXCESS,        "eXcess 16/32/64-bit configurable embedded CPU"),
1021   ENUM_ENT(EM_DXP,           "Icera Semiconductor Inc. Deep Execution Processor"),
1022   ENUM_ENT(EM_ALTERA_NIOS2,  "Altera Nios"),
1023   ENUM_ENT(EM_CRX,           "National Semiconductor CRX microprocessor"),
1024   ENUM_ENT(EM_XGATE,         "Motorola XGATE embedded processor"),
1025   ENUM_ENT(EM_C166,          "Infineon Technologies xc16x"),
1026   ENUM_ENT(EM_M16C,          "Renesas M16C"),
1027   ENUM_ENT(EM_DSPIC30F,      "Microchip Technology dsPIC30F Digital Signal Controller"),
1028   ENUM_ENT(EM_CE,            "Freescale Communication Engine RISC core"),
1029   ENUM_ENT(EM_M32C,          "Renesas M32C"),
1030   ENUM_ENT(EM_TSK3000,       "Altium TSK3000 core"),
1031   ENUM_ENT(EM_RS08,          "Freescale RS08 embedded processor"),
1032   ENUM_ENT(EM_SHARC,         "EM_SHARC"),
1033   ENUM_ENT(EM_ECOG2,         "Cyan Technology eCOG2 microprocessor"),
1034   ENUM_ENT(EM_SCORE7,        "SUNPLUS S+Core"),
1035   ENUM_ENT(EM_DSP24,         "New Japan Radio (NJR) 24-bit DSP Processor"),
1036   ENUM_ENT(EM_VIDEOCORE3,    "Broadcom VideoCore III processor"),
1037   ENUM_ENT(EM_LATTICEMICO32, "Lattice Mico32"),
1038   ENUM_ENT(EM_SE_C17,        "Seiko Epson C17 family"),
1039   ENUM_ENT(EM_TI_C6000,      "Texas Instruments TMS320C6000 DSP family"),
1040   ENUM_ENT(EM_TI_C2000,      "Texas Instruments TMS320C2000 DSP family"),
1041   ENUM_ENT(EM_TI_C5500,      "Texas Instruments TMS320C55x DSP family"),
1042   ENUM_ENT(EM_MMDSP_PLUS,    "STMicroelectronics 64bit VLIW Data Signal Processor"),
1043   ENUM_ENT(EM_CYPRESS_M8C,   "Cypress M8C microprocessor"),
1044   ENUM_ENT(EM_R32C,          "Renesas R32C series microprocessors"),
1045   ENUM_ENT(EM_TRIMEDIA,      "NXP Semiconductors TriMedia architecture family"),
1046   ENUM_ENT(EM_HEXAGON,       "Qualcomm Hexagon"),
1047   ENUM_ENT(EM_8051,          "Intel 8051 and variants"),
1048   ENUM_ENT(EM_STXP7X,        "STMicroelectronics STxP7x family"),
1049   ENUM_ENT(EM_NDS32,         "Andes Technology compact code size embedded RISC processor family"),
1050   ENUM_ENT(EM_ECOG1,         "Cyan Technology eCOG1 microprocessor"),
1051   ENUM_ENT(EM_ECOG1X,        "Cyan Technology eCOG1X family"),
1052   ENUM_ENT(EM_MAXQ30,        "Dallas Semiconductor MAXQ30 Core microcontrollers"),
1053   ENUM_ENT(EM_XIMO16,        "New Japan Radio (NJR) 16-bit DSP Processor"),
1054   ENUM_ENT(EM_MANIK,         "M2000 Reconfigurable RISC Microprocessor"),
1055   ENUM_ENT(EM_CRAYNV2,       "Cray Inc. NV2 vector architecture"),
1056   ENUM_ENT(EM_RX,            "Renesas RX"),
1057   ENUM_ENT(EM_METAG,         "Imagination Technologies Meta processor architecture"),
1058   ENUM_ENT(EM_MCST_ELBRUS,   "MCST Elbrus general purpose hardware architecture"),
1059   ENUM_ENT(EM_ECOG16,        "Cyan Technology eCOG16 family"),
1060   ENUM_ENT(EM_CR16,          "Xilinx MicroBlaze"),
1061   ENUM_ENT(EM_ETPU,          "Freescale Extended Time Processing Unit"),
1062   ENUM_ENT(EM_SLE9X,         "Infineon Technologies SLE9X core"),
1063   ENUM_ENT(EM_L10M,          "EM_L10M"),
1064   ENUM_ENT(EM_K10M,          "EM_K10M"),
1065   ENUM_ENT(EM_AARCH64,       "AArch64"),
1066   ENUM_ENT(EM_AVR32,         "Atmel Corporation 32-bit microprocessor family"),
1067   ENUM_ENT(EM_STM8,          "STMicroeletronics STM8 8-bit microcontroller"),
1068   ENUM_ENT(EM_TILE64,        "Tilera TILE64 multicore architecture family"),
1069   ENUM_ENT(EM_TILEPRO,       "Tilera TILEPro multicore architecture family"),
1070   ENUM_ENT(EM_CUDA,          "NVIDIA CUDA architecture"),
1071   ENUM_ENT(EM_TILEGX,        "Tilera TILE-Gx multicore architecture family"),
1072   ENUM_ENT(EM_CLOUDSHIELD,   "EM_CLOUDSHIELD"),
1073   ENUM_ENT(EM_COREA_1ST,     "EM_COREA_1ST"),
1074   ENUM_ENT(EM_COREA_2ND,     "EM_COREA_2ND"),
1075   ENUM_ENT(EM_ARC_COMPACT2,  "EM_ARC_COMPACT2"),
1076   ENUM_ENT(EM_OPEN8,         "EM_OPEN8"),
1077   ENUM_ENT(EM_RL78,          "Renesas RL78"),
1078   ENUM_ENT(EM_VIDEOCORE5,    "Broadcom VideoCore V processor"),
1079   ENUM_ENT(EM_78KOR,         "EM_78KOR"),
1080   ENUM_ENT(EM_56800EX,       "EM_56800EX"),
1081   ENUM_ENT(EM_AMDGPU,        "EM_AMDGPU"),
1082   ENUM_ENT(EM_RISCV,         "RISC-V"),
1083   ENUM_ENT(EM_LANAI,         "EM_LANAI"),
1084   ENUM_ENT(EM_BPF,           "EM_BPF"),
1085 };
1086 
1087 static const EnumEntry<unsigned> ElfSymbolBindings[] = {
1088     {"Local",  "LOCAL",  ELF::STB_LOCAL},
1089     {"Global", "GLOBAL", ELF::STB_GLOBAL},
1090     {"Weak",   "WEAK",   ELF::STB_WEAK},
1091     {"Unique", "UNIQUE", ELF::STB_GNU_UNIQUE}};
1092 
1093 static const EnumEntry<unsigned> ElfSymbolVisibilities[] = {
1094     {"DEFAULT",   "DEFAULT",   ELF::STV_DEFAULT},
1095     {"INTERNAL",  "INTERNAL",  ELF::STV_INTERNAL},
1096     {"HIDDEN",    "HIDDEN",    ELF::STV_HIDDEN},
1097     {"PROTECTED", "PROTECTED", ELF::STV_PROTECTED}};
1098 
1099 static const EnumEntry<unsigned> AMDGPUSymbolTypes[] = {
1100   { "AMDGPU_HSA_KERNEL",            ELF::STT_AMDGPU_HSA_KERNEL }
1101 };
1102 
1103 static const char *getGroupType(uint32_t Flag) {
1104   if (Flag & ELF::GRP_COMDAT)
1105     return "COMDAT";
1106   else
1107     return "(unknown)";
1108 }
1109 
1110 static const EnumEntry<unsigned> ElfSectionFlags[] = {
1111   ENUM_ENT(SHF_WRITE,            "W"),
1112   ENUM_ENT(SHF_ALLOC,            "A"),
1113   ENUM_ENT(SHF_EXCLUDE,          "E"),
1114   ENUM_ENT(SHF_EXECINSTR,        "X"),
1115   ENUM_ENT(SHF_MERGE,            "M"),
1116   ENUM_ENT(SHF_STRINGS,          "S"),
1117   ENUM_ENT(SHF_INFO_LINK,        "I"),
1118   ENUM_ENT(SHF_LINK_ORDER,       "L"),
1119   ENUM_ENT(SHF_OS_NONCONFORMING, "o"),
1120   ENUM_ENT(SHF_GROUP,            "G"),
1121   ENUM_ENT(SHF_TLS,              "T"),
1122   ENUM_ENT(SHF_MASKOS,           "o"),
1123   ENUM_ENT(SHF_MASKPROC,         "p"),
1124   ENUM_ENT_1(SHF_COMPRESSED),
1125 };
1126 
1127 static const EnumEntry<unsigned> ElfXCoreSectionFlags[] = {
1128   LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_CP_SECTION),
1129   LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_DP_SECTION)
1130 };
1131 
1132 static const EnumEntry<unsigned> ElfARMSectionFlags[] = {
1133   LLVM_READOBJ_ENUM_ENT(ELF, SHF_ARM_PURECODE)
1134 };
1135 
1136 static const EnumEntry<unsigned> ElfHexagonSectionFlags[] = {
1137   LLVM_READOBJ_ENUM_ENT(ELF, SHF_HEX_GPREL)
1138 };
1139 
1140 static const EnumEntry<unsigned> ElfMipsSectionFlags[] = {
1141   LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NODUPES),
1142   LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NAMES  ),
1143   LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_LOCAL  ),
1144   LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP),
1145   LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_GPREL  ),
1146   LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_MERGE  ),
1147   LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_ADDR   ),
1148   LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_STRING )
1149 };
1150 
1151 static const EnumEntry<unsigned> ElfX86_64SectionFlags[] = {
1152   LLVM_READOBJ_ENUM_ENT(ELF, SHF_X86_64_LARGE)
1153 };
1154 
1155 static std::string getGNUFlags(uint64_t Flags) {
1156   std::string Str;
1157   for (auto Entry : ElfSectionFlags) {
1158     uint64_t Flag = Entry.Value & Flags;
1159     Flags &= ~Entry.Value;
1160     switch (Flag) {
1161     case ELF::SHF_WRITE:
1162     case ELF::SHF_ALLOC:
1163     case ELF::SHF_EXECINSTR:
1164     case ELF::SHF_MERGE:
1165     case ELF::SHF_STRINGS:
1166     case ELF::SHF_INFO_LINK:
1167     case ELF::SHF_LINK_ORDER:
1168     case ELF::SHF_OS_NONCONFORMING:
1169     case ELF::SHF_GROUP:
1170     case ELF::SHF_TLS:
1171     case ELF::SHF_EXCLUDE:
1172       Str += Entry.AltName;
1173       break;
1174     default:
1175       if (Flag & ELF::SHF_MASKOS)
1176         Str += "o";
1177       else if (Flag & ELF::SHF_MASKPROC)
1178         Str += "p";
1179       else if (Flag)
1180         Str += "x";
1181     }
1182   }
1183   return Str;
1184 }
1185 
1186 static const char *getElfSegmentType(unsigned Arch, unsigned Type) {
1187   // Check potentially overlapped processor-specific
1188   // program header type.
1189   switch (Arch) {
1190   case ELF::EM_ARM:
1191     switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX); }
1192     break;
1193   case ELF::EM_MIPS:
1194   case ELF::EM_MIPS_RS3_LE:
1195     switch (Type) {
1196       LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO);
1197     LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC);
1198     LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS);
1199     LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS);
1200     }
1201     break;
1202   }
1203 
1204   switch (Type) {
1205   LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL   );
1206   LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD   );
1207   LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC);
1208   LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP );
1209   LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE   );
1210   LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB  );
1211   LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR   );
1212   LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS    );
1213 
1214   LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME);
1215   LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND);
1216 
1217     LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK);
1218     LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO);
1219 
1220     LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_RANDOMIZE);
1221     LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_WXNEEDED);
1222     LLVM_READOBJ_ENUM_CASE(ELF, PT_OPENBSD_BOOTDATA);
1223 
1224   default:
1225     return "";
1226   }
1227 }
1228 
1229 static std::string getElfPtType(unsigned Arch, unsigned Type) {
1230   switch (Type) {
1231     LLVM_READOBJ_PHDR_ENUM(ELF, PT_NULL)
1232     LLVM_READOBJ_PHDR_ENUM(ELF, PT_LOAD)
1233     LLVM_READOBJ_PHDR_ENUM(ELF, PT_DYNAMIC)
1234     LLVM_READOBJ_PHDR_ENUM(ELF, PT_INTERP)
1235     LLVM_READOBJ_PHDR_ENUM(ELF, PT_NOTE)
1236     LLVM_READOBJ_PHDR_ENUM(ELF, PT_SHLIB)
1237     LLVM_READOBJ_PHDR_ENUM(ELF, PT_PHDR)
1238     LLVM_READOBJ_PHDR_ENUM(ELF, PT_TLS)
1239     LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_EH_FRAME)
1240     LLVM_READOBJ_PHDR_ENUM(ELF, PT_SUNW_UNWIND)
1241     LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_STACK)
1242     LLVM_READOBJ_PHDR_ENUM(ELF, PT_GNU_RELRO)
1243   default:
1244     // All machine specific PT_* types
1245     switch (Arch) {
1246     case ELF::EM_ARM:
1247       if (Type == ELF::PT_ARM_EXIDX)
1248         return "EXIDX";
1249       break;
1250     case ELF::EM_MIPS:
1251     case ELF::EM_MIPS_RS3_LE:
1252       switch (Type) {
1253       case PT_MIPS_REGINFO:
1254         return "REGINFO";
1255       case PT_MIPS_RTPROC:
1256         return "RTPROC";
1257       case PT_MIPS_OPTIONS:
1258         return "OPTIONS";
1259       case PT_MIPS_ABIFLAGS:
1260         return "ABIFLAGS";
1261       }
1262       break;
1263     }
1264   }
1265   return std::string("<unknown>: ") + to_string(format_hex(Type, 1));
1266 }
1267 
1268 static const EnumEntry<unsigned> ElfSegmentFlags[] = {
1269   LLVM_READOBJ_ENUM_ENT(ELF, PF_X),
1270   LLVM_READOBJ_ENUM_ENT(ELF, PF_W),
1271   LLVM_READOBJ_ENUM_ENT(ELF, PF_R)
1272 };
1273 
1274 static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = {
1275   ENUM_ENT(EF_MIPS_NOREORDER, "noreorder"),
1276   ENUM_ENT(EF_MIPS_PIC, "pic"),
1277   ENUM_ENT(EF_MIPS_CPIC, "cpic"),
1278   ENUM_ENT(EF_MIPS_ABI2, "abi2"),
1279   ENUM_ENT(EF_MIPS_32BITMODE, "32bitmode"),
1280   ENUM_ENT(EF_MIPS_FP64, "fp64"),
1281   ENUM_ENT(EF_MIPS_NAN2008, "nan2008"),
1282   ENUM_ENT(EF_MIPS_ABI_O32, "o32"),
1283   ENUM_ENT(EF_MIPS_ABI_O64, "o64"),
1284   ENUM_ENT(EF_MIPS_ABI_EABI32, "eabi32"),
1285   ENUM_ENT(EF_MIPS_ABI_EABI64, "eabi64"),
1286   ENUM_ENT(EF_MIPS_MACH_3900, "3900"),
1287   ENUM_ENT(EF_MIPS_MACH_4010, "4010"),
1288   ENUM_ENT(EF_MIPS_MACH_4100, "4100"),
1289   ENUM_ENT(EF_MIPS_MACH_4650, "4650"),
1290   ENUM_ENT(EF_MIPS_MACH_4120, "4120"),
1291   ENUM_ENT(EF_MIPS_MACH_4111, "4111"),
1292   ENUM_ENT(EF_MIPS_MACH_SB1, "sb1"),
1293   ENUM_ENT(EF_MIPS_MACH_OCTEON, "octeon"),
1294   ENUM_ENT(EF_MIPS_MACH_XLR, "xlr"),
1295   ENUM_ENT(EF_MIPS_MACH_OCTEON2, "octeon2"),
1296   ENUM_ENT(EF_MIPS_MACH_OCTEON3, "octeon3"),
1297   ENUM_ENT(EF_MIPS_MACH_5400, "5400"),
1298   ENUM_ENT(EF_MIPS_MACH_5900, "5900"),
1299   ENUM_ENT(EF_MIPS_MACH_5500, "5500"),
1300   ENUM_ENT(EF_MIPS_MACH_9000, "9000"),
1301   ENUM_ENT(EF_MIPS_MACH_LS2E, "loongson-2e"),
1302   ENUM_ENT(EF_MIPS_MACH_LS2F, "loongson-2f"),
1303   ENUM_ENT(EF_MIPS_MACH_LS3A, "loongson-3a"),
1304   ENUM_ENT(EF_MIPS_MICROMIPS, "micromips"),
1305   ENUM_ENT(EF_MIPS_ARCH_ASE_M16, "mips16"),
1306   ENUM_ENT(EF_MIPS_ARCH_ASE_MDMX, "mdmx"),
1307   ENUM_ENT(EF_MIPS_ARCH_1, "mips1"),
1308   ENUM_ENT(EF_MIPS_ARCH_2, "mips2"),
1309   ENUM_ENT(EF_MIPS_ARCH_3, "mips3"),
1310   ENUM_ENT(EF_MIPS_ARCH_4, "mips4"),
1311   ENUM_ENT(EF_MIPS_ARCH_5, "mips5"),
1312   ENUM_ENT(EF_MIPS_ARCH_32, "mips32"),
1313   ENUM_ENT(EF_MIPS_ARCH_64, "mips64"),
1314   ENUM_ENT(EF_MIPS_ARCH_32R2, "mips32r2"),
1315   ENUM_ENT(EF_MIPS_ARCH_64R2, "mips64r2"),
1316   ENUM_ENT(EF_MIPS_ARCH_32R6, "mips32r6"),
1317   ENUM_ENT(EF_MIPS_ARCH_64R6, "mips64r6")
1318 };
1319 
1320 static const EnumEntry<unsigned> ElfHeaderAMDGPUFlags[] = {
1321   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_NONE),
1322   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R600),
1323   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_R630),
1324   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RS880),
1325   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV670),
1326   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV710),
1327   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV730),
1328   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_RV770),
1329   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CEDAR),
1330   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CYPRESS),
1331   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_JUNIPER),
1332   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_REDWOOD),
1333   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_SUMO),
1334   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_BARTS),
1335   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAICOS),
1336   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_CAYMAN),
1337   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_R600_TURKS),
1338   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX600),
1339   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX601),
1340   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX700),
1341   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX701),
1342   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX702),
1343   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX703),
1344   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX704),
1345   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX801),
1346   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX802),
1347   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX803),
1348   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX810),
1349   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX900),
1350   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX902),
1351   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX904),
1352   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX906),
1353   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX908),
1354   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX909),
1355   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1010),
1356   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1011),
1357   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_MACH_AMDGCN_GFX1012),
1358   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_XNACK),
1359   LLVM_READOBJ_ENUM_ENT(ELF, EF_AMDGPU_SRAM_ECC)
1360 };
1361 
1362 static const EnumEntry<unsigned> ElfHeaderRISCVFlags[] = {
1363   ENUM_ENT(EF_RISCV_RVC, "RVC"),
1364   ENUM_ENT(EF_RISCV_FLOAT_ABI_SINGLE, "single-float ABI"),
1365   ENUM_ENT(EF_RISCV_FLOAT_ABI_DOUBLE, "double-float ABI"),
1366   ENUM_ENT(EF_RISCV_FLOAT_ABI_QUAD, "quad-float ABI"),
1367   ENUM_ENT(EF_RISCV_RVE, "RVE")
1368 };
1369 
1370 static const EnumEntry<unsigned> ElfSymOtherFlags[] = {
1371   LLVM_READOBJ_ENUM_ENT(ELF, STV_INTERNAL),
1372   LLVM_READOBJ_ENUM_ENT(ELF, STV_HIDDEN),
1373   LLVM_READOBJ_ENUM_ENT(ELF, STV_PROTECTED)
1374 };
1375 
1376 static const EnumEntry<unsigned> ElfMipsSymOtherFlags[] = {
1377   LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL),
1378   LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT),
1379   LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PIC),
1380   LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MICROMIPS)
1381 };
1382 
1383 static const EnumEntry<unsigned> ElfMips16SymOtherFlags[] = {
1384   LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_OPTIONAL),
1385   LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_PLT),
1386   LLVM_READOBJ_ENUM_ENT(ELF, STO_MIPS_MIPS16)
1387 };
1388 
1389 static const char *getElfMipsOptionsOdkType(unsigned Odk) {
1390   switch (Odk) {
1391   LLVM_READOBJ_ENUM_CASE(ELF, ODK_NULL);
1392   LLVM_READOBJ_ENUM_CASE(ELF, ODK_REGINFO);
1393   LLVM_READOBJ_ENUM_CASE(ELF, ODK_EXCEPTIONS);
1394   LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAD);
1395   LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWPATCH);
1396   LLVM_READOBJ_ENUM_CASE(ELF, ODK_FILL);
1397   LLVM_READOBJ_ENUM_CASE(ELF, ODK_TAGS);
1398   LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWAND);
1399   LLVM_READOBJ_ENUM_CASE(ELF, ODK_HWOR);
1400   LLVM_READOBJ_ENUM_CASE(ELF, ODK_GP_GROUP);
1401   LLVM_READOBJ_ENUM_CASE(ELF, ODK_IDENT);
1402   LLVM_READOBJ_ENUM_CASE(ELF, ODK_PAGESIZE);
1403   default:
1404     return "Unknown";
1405   }
1406 }
1407 
1408 template <typename ELFT>
1409 void ELFDumper<ELFT>::loadDynamicTable(const ELFFile<ELFT> *Obj) {
1410   // Try to locate the PT_DYNAMIC header.
1411   const Elf_Phdr *DynamicPhdr = nullptr;
1412   for (const Elf_Phdr &Phdr :
1413        unwrapOrError(ObjF->getFileName(), Obj->program_headers())) {
1414     if (Phdr.p_type != ELF::PT_DYNAMIC)
1415       continue;
1416     DynamicPhdr = &Phdr;
1417     break;
1418   }
1419 
1420   // Try to locate the .dynamic section in the sections header table.
1421   const Elf_Shdr *DynamicSec = nullptr;
1422   for (const Elf_Shdr &Sec :
1423        unwrapOrError(ObjF->getFileName(), Obj->sections())) {
1424     if (Sec.sh_type != ELF::SHT_DYNAMIC)
1425       continue;
1426     DynamicSec = &Sec;
1427     break;
1428   }
1429 
1430   // Information in the section header has priority over the information
1431   // in a PT_DYNAMIC header.
1432   // Ignore sh_entsize and use the expected value for entry size explicitly.
1433   // This allows us to dump the dynamic sections with a broken sh_entsize
1434   // field.
1435   if (DynamicSec) {
1436     DynamicTable =
1437         checkDRI({ObjF->getELFFile()->base() + DynamicSec->sh_offset,
1438                   DynamicSec->sh_size, sizeof(Elf_Dyn), ObjF->getFileName()});
1439     parseDynamicTable();
1440   }
1441 
1442   // If we have a PT_DYNAMIC header, we will either check the found dynamic
1443   // section or take the dynamic table data directly from the header.
1444   if (!DynamicPhdr)
1445     return;
1446 
1447   if (DynamicPhdr->p_offset + DynamicPhdr->p_filesz >
1448       ObjF->getMemoryBufferRef().getBufferSize()) {
1449     reportWarning(
1450         createError(
1451             "PT_DYNAMIC segment offset + size exceeds the size of the file"),
1452         ObjF->getFileName());
1453     return;
1454   }
1455 
1456   if (!DynamicSec) {
1457     DynamicTable = createDRIFrom(DynamicPhdr, sizeof(Elf_Dyn));
1458     parseDynamicTable();
1459     return;
1460   }
1461 
1462   StringRef Name =
1463       unwrapOrError(ObjF->getFileName(), Obj->getSectionName(DynamicSec));
1464   if (DynamicSec->sh_addr + DynamicSec->sh_size >
1465           DynamicPhdr->p_vaddr + DynamicPhdr->p_memsz ||
1466       DynamicSec->sh_addr < DynamicPhdr->p_vaddr)
1467     reportWarning(createError("The SHT_DYNAMIC section '" + Name +
1468                               "' is not contained within the "
1469                               "PT_DYNAMIC segment"),
1470                   ObjF->getFileName());
1471 
1472   if (DynamicSec->sh_addr != DynamicPhdr->p_vaddr)
1473     reportWarning(createError("The SHT_DYNAMIC section '" + Name +
1474                               "' is not at the start of "
1475                               "PT_DYNAMIC segment"),
1476                   ObjF->getFileName());
1477 }
1478 
1479 template <typename ELFT>
1480 ELFDumper<ELFT>::ELFDumper(const object::ELFObjectFile<ELFT> *ObjF,
1481                            ScopedPrinter &Writer)
1482     : ObjDumper(Writer), ObjF(ObjF), DynRelRegion(ObjF->getFileName()),
1483       DynRelaRegion(ObjF->getFileName()), DynRelrRegion(ObjF->getFileName()),
1484       DynPLTRelRegion(ObjF->getFileName()), DynSymRegion(ObjF->getFileName()),
1485       DynamicTable(ObjF->getFileName()) {
1486   const ELFFile<ELFT> *Obj = ObjF->getELFFile();
1487   for (const Elf_Shdr &Sec :
1488        unwrapOrError(ObjF->getFileName(), Obj->sections())) {
1489     switch (Sec.sh_type) {
1490     case ELF::SHT_SYMTAB:
1491       if (!DotSymtabSec)
1492         DotSymtabSec = &Sec;
1493       break;
1494     case ELF::SHT_DYNSYM:
1495       if (!DynSymRegion.Size) {
1496         DynSymRegion = createDRIFrom(&Sec);
1497         // This is only used (if Elf_Shdr present)for naming section in GNU
1498         // style
1499         DynSymtabName =
1500             unwrapOrError(ObjF->getFileName(), Obj->getSectionName(&Sec));
1501 
1502         if (Expected<StringRef> E = Obj->getStringTableForSymtab(Sec))
1503           DynamicStringTable = *E;
1504         else
1505           reportWarning(E.takeError(), ObjF->getFileName());
1506       }
1507       break;
1508     case ELF::SHT_SYMTAB_SHNDX:
1509       ShndxTable = unwrapOrError(ObjF->getFileName(), Obj->getSHNDXTable(Sec));
1510       break;
1511     case ELF::SHT_GNU_versym:
1512       if (!SymbolVersionSection)
1513         SymbolVersionSection = &Sec;
1514       break;
1515     case ELF::SHT_GNU_verdef:
1516       if (!SymbolVersionDefSection)
1517         SymbolVersionDefSection = &Sec;
1518       break;
1519     case ELF::SHT_GNU_verneed:
1520       if (!SymbolVersionNeedSection)
1521         SymbolVersionNeedSection = &Sec;
1522       break;
1523     case ELF::SHT_LLVM_CALL_GRAPH_PROFILE:
1524       if (!DotCGProfileSec)
1525         DotCGProfileSec = &Sec;
1526       break;
1527     case ELF::SHT_LLVM_ADDRSIG:
1528       if (!DotAddrsigSec)
1529         DotAddrsigSec = &Sec;
1530       break;
1531     }
1532   }
1533 
1534   loadDynamicTable(Obj);
1535 
1536   if (opts::Output == opts::GNU)
1537     ELFDumperStyle.reset(new GNUStyle<ELFT>(Writer, this));
1538   else
1539     ELFDumperStyle.reset(new LLVMStyle<ELFT>(Writer, this));
1540 }
1541 
1542 static const char *getTypeString(unsigned Arch, uint64_t Type) {
1543 #define DYNAMIC_TAG(n, v)
1544   switch (Arch) {
1545 
1546   case EM_AARCH64:
1547     switch (Type) {
1548 #define AARCH64_DYNAMIC_TAG(name, value)                                       \
1549     case DT_##name:                                                            \
1550       return #name;
1551 #include "llvm/BinaryFormat/DynamicTags.def"
1552 #undef AARCH64_DYNAMIC_TAG
1553     }
1554     break;
1555 
1556   case EM_HEXAGON:
1557     switch (Type) {
1558 #define HEXAGON_DYNAMIC_TAG(name, value)                                       \
1559   case DT_##name:                                                              \
1560     return #name;
1561 #include "llvm/BinaryFormat/DynamicTags.def"
1562 #undef HEXAGON_DYNAMIC_TAG
1563     }
1564     break;
1565 
1566   case EM_MIPS:
1567     switch (Type) {
1568 #define MIPS_DYNAMIC_TAG(name, value)                                          \
1569   case DT_##name:                                                              \
1570     return #name;
1571 #include "llvm/BinaryFormat/DynamicTags.def"
1572 #undef MIPS_DYNAMIC_TAG
1573     }
1574     break;
1575 
1576   case EM_PPC64:
1577     switch (Type) {
1578 #define PPC64_DYNAMIC_TAG(name, value)                                         \
1579   case DT_##name:                                                              \
1580     return #name;
1581 #include "llvm/BinaryFormat/DynamicTags.def"
1582 #undef PPC64_DYNAMIC_TAG
1583     }
1584     break;
1585   }
1586 #undef DYNAMIC_TAG
1587   switch (Type) {
1588 // Now handle all dynamic tags except the architecture specific ones
1589 #define AARCH64_DYNAMIC_TAG(name, value)
1590 #define MIPS_DYNAMIC_TAG(name, value)
1591 #define HEXAGON_DYNAMIC_TAG(name, value)
1592 #define PPC64_DYNAMIC_TAG(name, value)
1593 // Also ignore marker tags such as DT_HIOS (maps to DT_VERNEEDNUM), etc.
1594 #define DYNAMIC_TAG_MARKER(name, value)
1595 #define DYNAMIC_TAG(name, value)                                               \
1596   case DT_##name:                                                              \
1597     return #name;
1598 #include "llvm/BinaryFormat/DynamicTags.def"
1599 #undef DYNAMIC_TAG
1600 #undef AARCH64_DYNAMIC_TAG
1601 #undef MIPS_DYNAMIC_TAG
1602 #undef HEXAGON_DYNAMIC_TAG
1603 #undef PPC64_DYNAMIC_TAG
1604 #undef DYNAMIC_TAG_MARKER
1605   default:
1606     return "unknown";
1607   }
1608 }
1609 
1610 template <typename ELFT> void ELFDumper<ELFT>::parseDynamicTable() {
1611   auto toMappedAddr = [&](uint64_t Tag, uint64_t VAddr) -> const uint8_t * {
1612     auto MappedAddrOrError = ObjF->getELFFile()->toMappedAddr(VAddr);
1613     if (!MappedAddrOrError) {
1614       Error Err =
1615           createError("Unable to parse DT_" +
1616                       Twine(getTypeString(
1617                           ObjF->getELFFile()->getHeader()->e_machine, Tag)) +
1618                       ": " + llvm::toString(MappedAddrOrError.takeError()));
1619 
1620       reportWarning(std::move(Err), ObjF->getFileName());
1621       return nullptr;
1622     }
1623     return MappedAddrOrError.get();
1624   };
1625 
1626   uint64_t SONameOffset = 0;
1627   const char *StringTableBegin = nullptr;
1628   uint64_t StringTableSize = 0;
1629   for (const Elf_Dyn &Dyn : dynamic_table()) {
1630     switch (Dyn.d_tag) {
1631     case ELF::DT_HASH:
1632       HashTable = reinterpret_cast<const Elf_Hash *>(
1633           toMappedAddr(Dyn.getTag(), Dyn.getPtr()));
1634       break;
1635     case ELF::DT_GNU_HASH:
1636       GnuHashTable = reinterpret_cast<const Elf_GnuHash *>(
1637           toMappedAddr(Dyn.getTag(), Dyn.getPtr()));
1638       break;
1639     case ELF::DT_STRTAB:
1640       StringTableBegin = reinterpret_cast<const char *>(
1641           toMappedAddr(Dyn.getTag(), Dyn.getPtr()));
1642       break;
1643     case ELF::DT_STRSZ:
1644       StringTableSize = Dyn.getVal();
1645       break;
1646     case ELF::DT_SYMTAB:
1647       DynSymRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
1648       DynSymRegion.EntSize = sizeof(Elf_Sym);
1649       break;
1650     case ELF::DT_RELA:
1651       DynRelaRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
1652       break;
1653     case ELF::DT_RELASZ:
1654       DynRelaRegion.Size = Dyn.getVal();
1655       break;
1656     case ELF::DT_RELAENT:
1657       DynRelaRegion.EntSize = Dyn.getVal();
1658       break;
1659     case ELF::DT_SONAME:
1660       SONameOffset = Dyn.getVal();
1661       break;
1662     case ELF::DT_REL:
1663       DynRelRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
1664       break;
1665     case ELF::DT_RELSZ:
1666       DynRelRegion.Size = Dyn.getVal();
1667       break;
1668     case ELF::DT_RELENT:
1669       DynRelRegion.EntSize = Dyn.getVal();
1670       break;
1671     case ELF::DT_RELR:
1672     case ELF::DT_ANDROID_RELR:
1673       DynRelrRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
1674       break;
1675     case ELF::DT_RELRSZ:
1676     case ELF::DT_ANDROID_RELRSZ:
1677       DynRelrRegion.Size = Dyn.getVal();
1678       break;
1679     case ELF::DT_RELRENT:
1680     case ELF::DT_ANDROID_RELRENT:
1681       DynRelrRegion.EntSize = Dyn.getVal();
1682       break;
1683     case ELF::DT_PLTREL:
1684       if (Dyn.getVal() == DT_REL)
1685         DynPLTRelRegion.EntSize = sizeof(Elf_Rel);
1686       else if (Dyn.getVal() == DT_RELA)
1687         DynPLTRelRegion.EntSize = sizeof(Elf_Rela);
1688       else
1689         reportError(createError(Twine("unknown DT_PLTREL value of ") +
1690                                 Twine((uint64_t)Dyn.getVal())),
1691                     ObjF->getFileName());
1692       break;
1693     case ELF::DT_JMPREL:
1694       DynPLTRelRegion.Addr = toMappedAddr(Dyn.getTag(), Dyn.getPtr());
1695       break;
1696     case ELF::DT_PLTRELSZ:
1697       DynPLTRelRegion.Size = Dyn.getVal();
1698       break;
1699     }
1700   }
1701   if (StringTableBegin)
1702     DynamicStringTable = StringRef(StringTableBegin, StringTableSize);
1703   SOName = getDynamicString(SONameOffset);
1704 }
1705 
1706 template <typename ELFT>
1707 typename ELFDumper<ELFT>::Elf_Rel_Range ELFDumper<ELFT>::dyn_rels() const {
1708   return DynRelRegion.getAsArrayRef<Elf_Rel>();
1709 }
1710 
1711 template <typename ELFT>
1712 typename ELFDumper<ELFT>::Elf_Rela_Range ELFDumper<ELFT>::dyn_relas() const {
1713   return DynRelaRegion.getAsArrayRef<Elf_Rela>();
1714 }
1715 
1716 template <typename ELFT>
1717 typename ELFDumper<ELFT>::Elf_Relr_Range ELFDumper<ELFT>::dyn_relrs() const {
1718   return DynRelrRegion.getAsArrayRef<Elf_Relr>();
1719 }
1720 
1721 template <class ELFT> void ELFDumper<ELFT>::printFileHeaders() {
1722   ELFDumperStyle->printFileHeaders(ObjF->getELFFile());
1723 }
1724 
1725 template <class ELFT> void ELFDumper<ELFT>::printSectionHeaders() {
1726   ELFDumperStyle->printSectionHeaders(ObjF->getELFFile());
1727 }
1728 
1729 template <class ELFT> void ELFDumper<ELFT>::printRelocations() {
1730   ELFDumperStyle->printRelocations(ObjF->getELFFile());
1731 }
1732 
1733 template <class ELFT>
1734 void ELFDumper<ELFT>::printProgramHeaders(
1735     bool PrintProgramHeaders, cl::boolOrDefault PrintSectionMapping) {
1736   ELFDumperStyle->printProgramHeaders(ObjF->getELFFile(), PrintProgramHeaders,
1737                                       PrintSectionMapping);
1738 }
1739 
1740 template <typename ELFT> void ELFDumper<ELFT>::printVersionInfo() {
1741   // Dump version symbol section.
1742   ELFDumperStyle->printVersionSymbolSection(ObjF->getELFFile(),
1743                                             SymbolVersionSection);
1744 
1745   // Dump version definition section.
1746   ELFDumperStyle->printVersionDefinitionSection(ObjF->getELFFile(),
1747                                                 SymbolVersionDefSection);
1748 
1749   // Dump version dependency section.
1750   ELFDumperStyle->printVersionDependencySection(ObjF->getELFFile(),
1751                                                 SymbolVersionNeedSection);
1752 }
1753 
1754 template <class ELFT> void ELFDumper<ELFT>::printDynamicRelocations() {
1755   ELFDumperStyle->printDynamicRelocations(ObjF->getELFFile());
1756 }
1757 
1758 template <class ELFT>
1759 void ELFDumper<ELFT>::printSymbols(bool PrintSymbols,
1760                                    bool PrintDynamicSymbols) {
1761   ELFDumperStyle->printSymbols(ObjF->getELFFile(), PrintSymbols,
1762                                PrintDynamicSymbols);
1763 }
1764 
1765 template <class ELFT> void ELFDumper<ELFT>::printHashSymbols() {
1766   ELFDumperStyle->printHashSymbols(ObjF->getELFFile());
1767 }
1768 
1769 template <class ELFT> void ELFDumper<ELFT>::printHashHistogram() {
1770   ELFDumperStyle->printHashHistogram(ObjF->getELFFile());
1771 }
1772 
1773 template <class ELFT> void ELFDumper<ELFT>::printCGProfile() {
1774   ELFDumperStyle->printCGProfile(ObjF->getELFFile());
1775 }
1776 
1777 template <class ELFT> void ELFDumper<ELFT>::printNotes() {
1778   ELFDumperStyle->printNotes(ObjF->getELFFile());
1779 }
1780 
1781 template <class ELFT> void ELFDumper<ELFT>::printELFLinkerOptions() {
1782   ELFDumperStyle->printELFLinkerOptions(ObjF->getELFFile());
1783 }
1784 
1785 template <class ELFT> void ELFDumper<ELFT>::printStackSizes() {
1786   ELFDumperStyle->printStackSizes(ObjF);
1787 }
1788 
1789 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum)                                 \
1790   { #enum, prefix##_##enum }
1791 
1792 static const EnumEntry<unsigned> ElfDynamicDTFlags[] = {
1793   LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN),
1794   LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC),
1795   LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL),
1796   LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW),
1797   LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS)
1798 };
1799 
1800 static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = {
1801   LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW),
1802   LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL),
1803   LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP),
1804   LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE),
1805   LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR),
1806   LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST),
1807   LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN),
1808   LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN),
1809   LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT),
1810   LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS),
1811   LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE),
1812   LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB),
1813   LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP),
1814   LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT),
1815   LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE),
1816   LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE),
1817   LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELPND),
1818   LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT),
1819   LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF),
1820   LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS),
1821   LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR),
1822   LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED),
1823   LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC),
1824   LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE),
1825   LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT),
1826   LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON)
1827 };
1828 
1829 static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = {
1830   LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE),
1831   LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART),
1832   LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT),
1833   LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT),
1834   LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE),
1835   LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY),
1836   LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT),
1837   LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS),
1838   LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT),
1839   LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE),
1840   LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD),
1841   LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART),
1842   LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED),
1843   LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD),
1844   LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF),
1845   LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE)
1846 };
1847 
1848 #undef LLVM_READOBJ_DT_FLAG_ENT
1849 
1850 template <typename T, typename TFlag>
1851 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) {
1852   using FlagEntry = EnumEntry<TFlag>;
1853   using FlagVector = SmallVector<FlagEntry, 10>;
1854   FlagVector SetFlags;
1855 
1856   for (const auto &Flag : Flags) {
1857     if (Flag.Value == 0)
1858       continue;
1859 
1860     if ((Value & Flag.Value) == Flag.Value)
1861       SetFlags.push_back(Flag);
1862   }
1863 
1864   for (const auto &Flag : SetFlags) {
1865     OS << Flag.Name << " ";
1866   }
1867 }
1868 
1869 template <class ELFT>
1870 void ELFDumper<ELFT>::printDynamicEntry(raw_ostream &OS, uint64_t Type,
1871                                         uint64_t Value) const {
1872   const char *ConvChar =
1873       (opts::Output == opts::GNU) ? "0x%" PRIx64 : "0x%" PRIX64;
1874 
1875   // Handle custom printing of architecture specific tags
1876   switch (ObjF->getELFFile()->getHeader()->e_machine) {
1877   case EM_AARCH64:
1878     switch (Type) {
1879     case DT_AARCH64_BTI_PLT:
1880     case DT_AARCH64_PAC_PLT:
1881       OS << Value;
1882       return;
1883     default:
1884       break;
1885     }
1886     break;
1887   case EM_HEXAGON:
1888     switch (Type) {
1889     case DT_HEXAGON_VER:
1890       OS << Value;
1891       return;
1892     case DT_HEXAGON_SYMSZ:
1893     case DT_HEXAGON_PLT:
1894       OS << format(ConvChar, Value);
1895       return;
1896     default:
1897       break;
1898     }
1899     break;
1900   case EM_MIPS:
1901     switch (Type) {
1902     case DT_MIPS_RLD_VERSION:
1903     case DT_MIPS_LOCAL_GOTNO:
1904     case DT_MIPS_SYMTABNO:
1905     case DT_MIPS_UNREFEXTNO:
1906       OS << Value;
1907       return;
1908     case DT_MIPS_TIME_STAMP:
1909     case DT_MIPS_ICHECKSUM:
1910     case DT_MIPS_IVERSION:
1911     case DT_MIPS_BASE_ADDRESS:
1912     case DT_MIPS_MSYM:
1913     case DT_MIPS_CONFLICT:
1914     case DT_MIPS_LIBLIST:
1915     case DT_MIPS_CONFLICTNO:
1916     case DT_MIPS_LIBLISTNO:
1917     case DT_MIPS_GOTSYM:
1918     case DT_MIPS_HIPAGENO:
1919     case DT_MIPS_RLD_MAP:
1920     case DT_MIPS_DELTA_CLASS:
1921     case DT_MIPS_DELTA_CLASS_NO:
1922     case DT_MIPS_DELTA_INSTANCE:
1923     case DT_MIPS_DELTA_RELOC:
1924     case DT_MIPS_DELTA_RELOC_NO:
1925     case DT_MIPS_DELTA_SYM:
1926     case DT_MIPS_DELTA_SYM_NO:
1927     case DT_MIPS_DELTA_CLASSSYM:
1928     case DT_MIPS_DELTA_CLASSSYM_NO:
1929     case DT_MIPS_CXX_FLAGS:
1930     case DT_MIPS_PIXIE_INIT:
1931     case DT_MIPS_SYMBOL_LIB:
1932     case DT_MIPS_LOCALPAGE_GOTIDX:
1933     case DT_MIPS_LOCAL_GOTIDX:
1934     case DT_MIPS_HIDDEN_GOTIDX:
1935     case DT_MIPS_PROTECTED_GOTIDX:
1936     case DT_MIPS_OPTIONS:
1937     case DT_MIPS_INTERFACE:
1938     case DT_MIPS_DYNSTR_ALIGN:
1939     case DT_MIPS_INTERFACE_SIZE:
1940     case DT_MIPS_RLD_TEXT_RESOLVE_ADDR:
1941     case DT_MIPS_PERF_SUFFIX:
1942     case DT_MIPS_COMPACT_SIZE:
1943     case DT_MIPS_GP_VALUE:
1944     case DT_MIPS_AUX_DYNAMIC:
1945     case DT_MIPS_PLTGOT:
1946     case DT_MIPS_RWPLT:
1947     case DT_MIPS_RLD_MAP_REL:
1948       OS << format(ConvChar, Value);
1949       return;
1950     case DT_MIPS_FLAGS:
1951       printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS);
1952       return;
1953     default:
1954       break;
1955     }
1956     break;
1957   default:
1958     break;
1959   }
1960 
1961   switch (Type) {
1962   case DT_PLTREL:
1963     if (Value == DT_REL) {
1964       OS << "REL";
1965       break;
1966     } else if (Value == DT_RELA) {
1967       OS << "RELA";
1968       break;
1969     }
1970     LLVM_FALLTHROUGH;
1971   case DT_PLTGOT:
1972   case DT_HASH:
1973   case DT_STRTAB:
1974   case DT_SYMTAB:
1975   case DT_RELA:
1976   case DT_INIT:
1977   case DT_FINI:
1978   case DT_REL:
1979   case DT_JMPREL:
1980   case DT_INIT_ARRAY:
1981   case DT_FINI_ARRAY:
1982   case DT_PREINIT_ARRAY:
1983   case DT_DEBUG:
1984   case DT_VERDEF:
1985   case DT_VERNEED:
1986   case DT_VERSYM:
1987   case DT_GNU_HASH:
1988   case DT_NULL:
1989     OS << format(ConvChar, Value);
1990     break;
1991   case DT_RELACOUNT:
1992   case DT_RELCOUNT:
1993   case DT_VERDEFNUM:
1994   case DT_VERNEEDNUM:
1995     OS << Value;
1996     break;
1997   case DT_PLTRELSZ:
1998   case DT_RELASZ:
1999   case DT_RELAENT:
2000   case DT_STRSZ:
2001   case DT_SYMENT:
2002   case DT_RELSZ:
2003   case DT_RELENT:
2004   case DT_INIT_ARRAYSZ:
2005   case DT_FINI_ARRAYSZ:
2006   case DT_PREINIT_ARRAYSZ:
2007   case DT_ANDROID_RELSZ:
2008   case DT_ANDROID_RELASZ:
2009     OS << Value << " (bytes)";
2010     break;
2011   case DT_NEEDED:
2012   case DT_SONAME:
2013   case DT_AUXILIARY:
2014   case DT_USED:
2015   case DT_FILTER:
2016   case DT_RPATH:
2017   case DT_RUNPATH: {
2018     const std::map<uint64_t, const char*> TagNames = {
2019       {DT_NEEDED,    "Shared library"},
2020       {DT_SONAME,    "Library soname"},
2021       {DT_AUXILIARY, "Auxiliary library"},
2022       {DT_USED,      "Not needed object"},
2023       {DT_FILTER,    "Filter library"},
2024       {DT_RPATH,     "Library rpath"},
2025       {DT_RUNPATH,   "Library runpath"},
2026     };
2027     OS << TagNames.at(Type) << ": [" << getDynamicString(Value) << "]";
2028     break;
2029   }
2030   case DT_FLAGS:
2031     printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS);
2032     break;
2033   case DT_FLAGS_1:
2034     printFlags(Value, makeArrayRef(ElfDynamicDTFlags1), OS);
2035     break;
2036   default:
2037     OS << format(ConvChar, Value);
2038     break;
2039   }
2040 }
2041 
2042 template <class ELFT>
2043 std::string ELFDumper<ELFT>::getDynamicString(uint64_t Value) const {
2044   if (DynamicStringTable.empty())
2045     return "<String table is empty or was not found>";
2046   if (Value < DynamicStringTable.size())
2047     return DynamicStringTable.data() + Value;
2048   return Twine("<Invalid offset 0x" + utohexstr(Value) + ">").str();
2049 }
2050 
2051 template <class ELFT> void ELFDumper<ELFT>::printUnwindInfo() {
2052   DwarfCFIEH::PrinterContext<ELFT> Ctx(W, ObjF);
2053   Ctx.printUnwindInformation();
2054 }
2055 
2056 namespace {
2057 
2058 template <> void ELFDumper<ELF32LE>::printUnwindInfo() {
2059   const ELFFile<ELF32LE> *Obj = ObjF->getELFFile();
2060   const unsigned Machine = Obj->getHeader()->e_machine;
2061   if (Machine == EM_ARM) {
2062     ARM::EHABI::PrinterContext<ELF32LE> Ctx(W, Obj, ObjF->getFileName(),
2063                                             DotSymtabSec);
2064     Ctx.PrintUnwindInformation();
2065   }
2066   DwarfCFIEH::PrinterContext<ELF32LE> Ctx(W, ObjF);
2067   Ctx.printUnwindInformation();
2068 }
2069 
2070 } // end anonymous namespace
2071 
2072 template <class ELFT> void ELFDumper<ELFT>::printDynamicTable() {
2073   ELFDumperStyle->printDynamic(ObjF->getELFFile());
2074 }
2075 
2076 template <class ELFT> void ELFDumper<ELFT>::printNeededLibraries() {
2077   ListScope D(W, "NeededLibraries");
2078 
2079   std::vector<std::string> Libs;
2080   for (const auto &Entry : dynamic_table())
2081     if (Entry.d_tag == ELF::DT_NEEDED)
2082       Libs.push_back(getDynamicString(Entry.d_un.d_val));
2083 
2084   llvm::stable_sort(Libs);
2085 
2086   for (const auto &L : Libs)
2087     W.startLine() << L << "\n";
2088 }
2089 
2090 template <typename ELFT> void ELFDumper<ELFT>::printHashTable() {
2091   DictScope D(W, "HashTable");
2092   if (!HashTable)
2093     return;
2094   W.printNumber("Num Buckets", HashTable->nbucket);
2095   W.printNumber("Num Chains", HashTable->nchain);
2096   W.printList("Buckets", HashTable->buckets());
2097   W.printList("Chains", HashTable->chains());
2098 }
2099 
2100 template <typename ELFT> void ELFDumper<ELFT>::printGnuHashTable() {
2101   DictScope D(W, "GnuHashTable");
2102   if (!GnuHashTable)
2103     return;
2104   W.printNumber("Num Buckets", GnuHashTable->nbuckets);
2105   W.printNumber("First Hashed Symbol Index", GnuHashTable->symndx);
2106   W.printNumber("Num Mask Words", GnuHashTable->maskwords);
2107   W.printNumber("Shift Count", GnuHashTable->shift2);
2108   W.printHexList("Bloom Filter", GnuHashTable->filter());
2109   W.printList("Buckets", GnuHashTable->buckets());
2110   Elf_Sym_Range Syms = dynamic_symbols();
2111   unsigned NumSyms = std::distance(Syms.begin(), Syms.end());
2112   if (!NumSyms)
2113     reportError(createError("No dynamic symbol section"), ObjF->getFileName());
2114   W.printHexList("Values", GnuHashTable->values(NumSyms));
2115 }
2116 
2117 template <typename ELFT> void ELFDumper<ELFT>::printLoadName() {
2118   W.printString("LoadName", SOName);
2119 }
2120 
2121 template <class ELFT> void ELFDumper<ELFT>::printAttributes() {
2122   W.startLine() << "Attributes not implemented.\n";
2123 }
2124 
2125 namespace {
2126 
2127 template <> void ELFDumper<ELF32LE>::printAttributes() {
2128   const ELFFile<ELF32LE> *Obj = ObjF->getELFFile();
2129   if (Obj->getHeader()->e_machine != EM_ARM) {
2130     W.startLine() << "Attributes not implemented.\n";
2131     return;
2132   }
2133 
2134   DictScope BA(W, "BuildAttributes");
2135   for (const ELFO::Elf_Shdr &Sec :
2136        unwrapOrError(ObjF->getFileName(), Obj->sections())) {
2137     if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES)
2138       continue;
2139 
2140     ArrayRef<uint8_t> Contents =
2141         unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(&Sec));
2142     if (Contents[0] != ARMBuildAttrs::Format_Version) {
2143       errs() << "unrecognised FormatVersion: 0x"
2144              << Twine::utohexstr(Contents[0]) << '\n';
2145       continue;
2146     }
2147 
2148     W.printHex("FormatVersion", Contents[0]);
2149     if (Contents.size() == 1)
2150       continue;
2151 
2152     ARMAttributeParser(&W).Parse(Contents, true);
2153   }
2154 }
2155 
2156 template <class ELFT> class MipsGOTParser {
2157 public:
2158   TYPEDEF_ELF_TYPES(ELFT)
2159   using Entry = typename ELFO::Elf_Addr;
2160   using Entries = ArrayRef<Entry>;
2161 
2162   const bool IsStatic;
2163   const ELFO * const Obj;
2164 
2165   MipsGOTParser(const ELFO *Obj, StringRef FileName, Elf_Dyn_Range DynTable,
2166                 Elf_Sym_Range DynSyms);
2167 
2168   bool hasGot() const { return !GotEntries.empty(); }
2169   bool hasPlt() const { return !PltEntries.empty(); }
2170 
2171   uint64_t getGp() const;
2172 
2173   const Entry *getGotLazyResolver() const;
2174   const Entry *getGotModulePointer() const;
2175   const Entry *getPltLazyResolver() const;
2176   const Entry *getPltModulePointer() const;
2177 
2178   Entries getLocalEntries() const;
2179   Entries getGlobalEntries() const;
2180   Entries getOtherEntries() const;
2181   Entries getPltEntries() const;
2182 
2183   uint64_t getGotAddress(const Entry * E) const;
2184   int64_t getGotOffset(const Entry * E) const;
2185   const Elf_Sym *getGotSym(const Entry *E) const;
2186 
2187   uint64_t getPltAddress(const Entry * E) const;
2188   const Elf_Sym *getPltSym(const Entry *E) const;
2189 
2190   StringRef getPltStrTable() const { return PltStrTable; }
2191 
2192 private:
2193   const Elf_Shdr *GotSec;
2194   size_t LocalNum;
2195   size_t GlobalNum;
2196 
2197   const Elf_Shdr *PltSec;
2198   const Elf_Shdr *PltRelSec;
2199   const Elf_Shdr *PltSymTable;
2200   StringRef FileName;
2201 
2202   Elf_Sym_Range GotDynSyms;
2203   StringRef PltStrTable;
2204 
2205   Entries GotEntries;
2206   Entries PltEntries;
2207 };
2208 
2209 } // end anonymous namespace
2210 
2211 template <class ELFT>
2212 MipsGOTParser<ELFT>::MipsGOTParser(const ELFO *Obj, StringRef FileName,
2213                                    Elf_Dyn_Range DynTable,
2214                                    Elf_Sym_Range DynSyms)
2215     : IsStatic(DynTable.empty()), Obj(Obj), GotSec(nullptr), LocalNum(0),
2216       GlobalNum(0), PltSec(nullptr), PltRelSec(nullptr), PltSymTable(nullptr),
2217       FileName(FileName) {
2218   // See "Global Offset Table" in Chapter 5 in the following document
2219   // for detailed GOT description.
2220   // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf
2221 
2222   // Find static GOT secton.
2223   if (IsStatic) {
2224     GotSec = findSectionByName(*Obj, FileName, ".got");
2225     if (!GotSec)
2226       reportError(createError("Cannot find .got section"), FileName);
2227 
2228     ArrayRef<uint8_t> Content =
2229         unwrapOrError(FileName, Obj->getSectionContents(GotSec));
2230     GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()),
2231                          Content.size() / sizeof(Entry));
2232     LocalNum = GotEntries.size();
2233     return;
2234   }
2235 
2236   // Lookup dynamic table tags which define GOT/PLT layouts.
2237   Optional<uint64_t> DtPltGot;
2238   Optional<uint64_t> DtLocalGotNum;
2239   Optional<uint64_t> DtGotSym;
2240   Optional<uint64_t> DtMipsPltGot;
2241   Optional<uint64_t> DtJmpRel;
2242   for (const auto &Entry : DynTable) {
2243     switch (Entry.getTag()) {
2244     case ELF::DT_PLTGOT:
2245       DtPltGot = Entry.getVal();
2246       break;
2247     case ELF::DT_MIPS_LOCAL_GOTNO:
2248       DtLocalGotNum = Entry.getVal();
2249       break;
2250     case ELF::DT_MIPS_GOTSYM:
2251       DtGotSym = Entry.getVal();
2252       break;
2253     case ELF::DT_MIPS_PLTGOT:
2254       DtMipsPltGot = Entry.getVal();
2255       break;
2256     case ELF::DT_JMPREL:
2257       DtJmpRel = Entry.getVal();
2258       break;
2259     }
2260   }
2261 
2262   // Find dynamic GOT section.
2263   if (DtPltGot || DtLocalGotNum || DtGotSym) {
2264     if (!DtPltGot)
2265       report_fatal_error("Cannot find PLTGOT dynamic table tag.");
2266     if (!DtLocalGotNum)
2267       report_fatal_error("Cannot find MIPS_LOCAL_GOTNO dynamic table tag.");
2268     if (!DtGotSym)
2269       report_fatal_error("Cannot find MIPS_GOTSYM dynamic table tag.");
2270 
2271     size_t DynSymTotal = DynSyms.size();
2272     if (*DtGotSym > DynSymTotal)
2273       reportError(
2274           createError("MIPS_GOTSYM exceeds a number of dynamic symbols"),
2275           FileName);
2276 
2277     GotSec = findNotEmptySectionByAddress(Obj, FileName, *DtPltGot);
2278     if (!GotSec)
2279       reportError(createError("There is no not empty GOT section at 0x" +
2280                               Twine::utohexstr(*DtPltGot)),
2281                   FileName);
2282 
2283     LocalNum = *DtLocalGotNum;
2284     GlobalNum = DynSymTotal - *DtGotSym;
2285 
2286     ArrayRef<uint8_t> Content =
2287         unwrapOrError(FileName, Obj->getSectionContents(GotSec));
2288     GotEntries = Entries(reinterpret_cast<const Entry *>(Content.data()),
2289                          Content.size() / sizeof(Entry));
2290     GotDynSyms = DynSyms.drop_front(*DtGotSym);
2291   }
2292 
2293   // Find PLT section.
2294   if (DtMipsPltGot || DtJmpRel) {
2295     if (!DtMipsPltGot)
2296       report_fatal_error("Cannot find MIPS_PLTGOT dynamic table tag.");
2297     if (!DtJmpRel)
2298       report_fatal_error("Cannot find JMPREL dynamic table tag.");
2299 
2300     PltSec = findNotEmptySectionByAddress(Obj, FileName, * DtMipsPltGot);
2301     if (!PltSec)
2302       report_fatal_error("There is no not empty PLTGOT section at 0x " +
2303                          Twine::utohexstr(*DtMipsPltGot));
2304 
2305     PltRelSec = findNotEmptySectionByAddress(Obj, FileName, * DtJmpRel);
2306     if (!PltRelSec)
2307       report_fatal_error("There is no not empty RELPLT section at 0x" +
2308                          Twine::utohexstr(*DtJmpRel));
2309 
2310     ArrayRef<uint8_t> PltContent =
2311         unwrapOrError(FileName, Obj->getSectionContents(PltSec));
2312     PltEntries = Entries(reinterpret_cast<const Entry *>(PltContent.data()),
2313                          PltContent.size() / sizeof(Entry));
2314 
2315     PltSymTable = unwrapOrError(FileName, Obj->getSection(PltRelSec->sh_link));
2316     PltStrTable =
2317         unwrapOrError(FileName, Obj->getStringTableForSymtab(*PltSymTable));
2318   }
2319 }
2320 
2321 template <class ELFT> uint64_t MipsGOTParser<ELFT>::getGp() const {
2322   return GotSec->sh_addr + 0x7ff0;
2323 }
2324 
2325 template <class ELFT>
2326 const typename MipsGOTParser<ELFT>::Entry *
2327 MipsGOTParser<ELFT>::getGotLazyResolver() const {
2328   return LocalNum > 0 ? &GotEntries[0] : nullptr;
2329 }
2330 
2331 template <class ELFT>
2332 const typename MipsGOTParser<ELFT>::Entry *
2333 MipsGOTParser<ELFT>::getGotModulePointer() const {
2334   if (LocalNum < 2)
2335     return nullptr;
2336   const Entry &E = GotEntries[1];
2337   if ((E >> (sizeof(Entry) * 8 - 1)) == 0)
2338     return nullptr;
2339   return &E;
2340 }
2341 
2342 template <class ELFT>
2343 typename MipsGOTParser<ELFT>::Entries
2344 MipsGOTParser<ELFT>::getLocalEntries() const {
2345   size_t Skip = getGotModulePointer() ? 2 : 1;
2346   if (LocalNum - Skip <= 0)
2347     return Entries();
2348   return GotEntries.slice(Skip, LocalNum - Skip);
2349 }
2350 
2351 template <class ELFT>
2352 typename MipsGOTParser<ELFT>::Entries
2353 MipsGOTParser<ELFT>::getGlobalEntries() const {
2354   if (GlobalNum == 0)
2355     return Entries();
2356   return GotEntries.slice(LocalNum, GlobalNum);
2357 }
2358 
2359 template <class ELFT>
2360 typename MipsGOTParser<ELFT>::Entries
2361 MipsGOTParser<ELFT>::getOtherEntries() const {
2362   size_t OtherNum = GotEntries.size() - LocalNum - GlobalNum;
2363   if (OtherNum == 0)
2364     return Entries();
2365   return GotEntries.slice(LocalNum + GlobalNum, OtherNum);
2366 }
2367 
2368 template <class ELFT>
2369 uint64_t MipsGOTParser<ELFT>::getGotAddress(const Entry *E) const {
2370   int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry);
2371   return GotSec->sh_addr + Offset;
2372 }
2373 
2374 template <class ELFT>
2375 int64_t MipsGOTParser<ELFT>::getGotOffset(const Entry *E) const {
2376   int64_t Offset = std::distance(GotEntries.data(), E) * sizeof(Entry);
2377   return Offset - 0x7ff0;
2378 }
2379 
2380 template <class ELFT>
2381 const typename MipsGOTParser<ELFT>::Elf_Sym *
2382 MipsGOTParser<ELFT>::getGotSym(const Entry *E) const {
2383   int64_t Offset = std::distance(GotEntries.data(), E);
2384   return &GotDynSyms[Offset - LocalNum];
2385 }
2386 
2387 template <class ELFT>
2388 const typename MipsGOTParser<ELFT>::Entry *
2389 MipsGOTParser<ELFT>::getPltLazyResolver() const {
2390   return PltEntries.empty() ? nullptr : &PltEntries[0];
2391 }
2392 
2393 template <class ELFT>
2394 const typename MipsGOTParser<ELFT>::Entry *
2395 MipsGOTParser<ELFT>::getPltModulePointer() const {
2396   return PltEntries.size() < 2 ? nullptr : &PltEntries[1];
2397 }
2398 
2399 template <class ELFT>
2400 typename MipsGOTParser<ELFT>::Entries
2401 MipsGOTParser<ELFT>::getPltEntries() const {
2402   if (PltEntries.size() <= 2)
2403     return Entries();
2404   return PltEntries.slice(2, PltEntries.size() - 2);
2405 }
2406 
2407 template <class ELFT>
2408 uint64_t MipsGOTParser<ELFT>::getPltAddress(const Entry *E) const {
2409   int64_t Offset = std::distance(PltEntries.data(), E) * sizeof(Entry);
2410   return PltSec->sh_addr + Offset;
2411 }
2412 
2413 template <class ELFT>
2414 const typename MipsGOTParser<ELFT>::Elf_Sym *
2415 MipsGOTParser<ELFT>::getPltSym(const Entry *E) const {
2416   int64_t Offset = std::distance(getPltEntries().data(), E);
2417   if (PltRelSec->sh_type == ELF::SHT_REL) {
2418     Elf_Rel_Range Rels = unwrapOrError(FileName, Obj->rels(PltRelSec));
2419     return unwrapOrError(FileName,
2420                          Obj->getRelocationSymbol(&Rels[Offset], PltSymTable));
2421   } else {
2422     Elf_Rela_Range Rels = unwrapOrError(FileName, Obj->relas(PltRelSec));
2423     return unwrapOrError(FileName,
2424                          Obj->getRelocationSymbol(&Rels[Offset], PltSymTable));
2425   }
2426 }
2427 
2428 template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() {
2429   const ELFFile<ELFT> *Obj = ObjF->getELFFile();
2430   if (Obj->getHeader()->e_machine != EM_MIPS)
2431     reportError(createError("MIPS PLT GOT is available for MIPS targets only"),
2432                 ObjF->getFileName());
2433 
2434   MipsGOTParser<ELFT> Parser(Obj, ObjF->getFileName(), dynamic_table(),
2435                              dynamic_symbols());
2436   if (Parser.hasGot())
2437     ELFDumperStyle->printMipsGOT(Parser);
2438   if (Parser.hasPlt())
2439     ELFDumperStyle->printMipsPLT(Parser);
2440 }
2441 
2442 static const EnumEntry<unsigned> ElfMipsISAExtType[] = {
2443   {"None",                    Mips::AFL_EXT_NONE},
2444   {"Broadcom SB-1",           Mips::AFL_EXT_SB1},
2445   {"Cavium Networks Octeon",  Mips::AFL_EXT_OCTEON},
2446   {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2},
2447   {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP},
2448   {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3},
2449   {"LSI R4010",               Mips::AFL_EXT_4010},
2450   {"Loongson 2E",             Mips::AFL_EXT_LOONGSON_2E},
2451   {"Loongson 2F",             Mips::AFL_EXT_LOONGSON_2F},
2452   {"Loongson 3A",             Mips::AFL_EXT_LOONGSON_3A},
2453   {"MIPS R4650",              Mips::AFL_EXT_4650},
2454   {"MIPS R5900",              Mips::AFL_EXT_5900},
2455   {"MIPS R10000",             Mips::AFL_EXT_10000},
2456   {"NEC VR4100",              Mips::AFL_EXT_4100},
2457   {"NEC VR4111/VR4181",       Mips::AFL_EXT_4111},
2458   {"NEC VR4120",              Mips::AFL_EXT_4120},
2459   {"NEC VR5400",              Mips::AFL_EXT_5400},
2460   {"NEC VR5500",              Mips::AFL_EXT_5500},
2461   {"RMI Xlr",                 Mips::AFL_EXT_XLR},
2462   {"Toshiba R3900",           Mips::AFL_EXT_3900}
2463 };
2464 
2465 static const EnumEntry<unsigned> ElfMipsASEFlags[] = {
2466   {"DSP",                Mips::AFL_ASE_DSP},
2467   {"DSPR2",              Mips::AFL_ASE_DSPR2},
2468   {"Enhanced VA Scheme", Mips::AFL_ASE_EVA},
2469   {"MCU",                Mips::AFL_ASE_MCU},
2470   {"MDMX",               Mips::AFL_ASE_MDMX},
2471   {"MIPS-3D",            Mips::AFL_ASE_MIPS3D},
2472   {"MT",                 Mips::AFL_ASE_MT},
2473   {"SmartMIPS",          Mips::AFL_ASE_SMARTMIPS},
2474   {"VZ",                 Mips::AFL_ASE_VIRT},
2475   {"MSA",                Mips::AFL_ASE_MSA},
2476   {"MIPS16",             Mips::AFL_ASE_MIPS16},
2477   {"microMIPS",          Mips::AFL_ASE_MICROMIPS},
2478   {"XPA",                Mips::AFL_ASE_XPA},
2479   {"CRC",                Mips::AFL_ASE_CRC},
2480   {"GINV",               Mips::AFL_ASE_GINV},
2481 };
2482 
2483 static const EnumEntry<unsigned> ElfMipsFpABIType[] = {
2484   {"Hard or soft float",                  Mips::Val_GNU_MIPS_ABI_FP_ANY},
2485   {"Hard float (double precision)",       Mips::Val_GNU_MIPS_ABI_FP_DOUBLE},
2486   {"Hard float (single precision)",       Mips::Val_GNU_MIPS_ABI_FP_SINGLE},
2487   {"Soft float",                          Mips::Val_GNU_MIPS_ABI_FP_SOFT},
2488   {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)",
2489    Mips::Val_GNU_MIPS_ABI_FP_OLD_64},
2490   {"Hard float (32-bit CPU, Any FPU)",    Mips::Val_GNU_MIPS_ABI_FP_XX},
2491   {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64},
2492   {"Hard float compat (32-bit CPU, 64-bit FPU)",
2493    Mips::Val_GNU_MIPS_ABI_FP_64A}
2494 };
2495 
2496 static const EnumEntry<unsigned> ElfMipsFlags1[] {
2497   {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG},
2498 };
2499 
2500 static int getMipsRegisterSize(uint8_t Flag) {
2501   switch (Flag) {
2502   case Mips::AFL_REG_NONE:
2503     return 0;
2504   case Mips::AFL_REG_32:
2505     return 32;
2506   case Mips::AFL_REG_64:
2507     return 64;
2508   case Mips::AFL_REG_128:
2509     return 128;
2510   default:
2511     return -1;
2512   }
2513 }
2514 
2515 template <class ELFT> void ELFDumper<ELFT>::printMipsABIFlags() {
2516   const ELFFile<ELFT> *Obj = ObjF->getELFFile();
2517   const Elf_Shdr *Shdr =
2518       findSectionByName(*Obj, ObjF->getFileName(), ".MIPS.abiflags");
2519   if (!Shdr) {
2520     W.startLine() << "There is no .MIPS.abiflags section in the file.\n";
2521     return;
2522   }
2523   ArrayRef<uint8_t> Sec =
2524       unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr));
2525   if (Sec.size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) {
2526     W.startLine() << "The .MIPS.abiflags section has a wrong size.\n";
2527     return;
2528   }
2529 
2530   auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec.data());
2531 
2532   raw_ostream &OS = W.getOStream();
2533   DictScope GS(W, "MIPS ABI Flags");
2534 
2535   W.printNumber("Version", Flags->version);
2536   W.startLine() << "ISA: ";
2537   if (Flags->isa_rev <= 1)
2538     OS << format("MIPS%u", Flags->isa_level);
2539   else
2540     OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev);
2541   OS << "\n";
2542   W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType));
2543   W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags));
2544   W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType));
2545   W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size));
2546   W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size));
2547   W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size));
2548   W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1));
2549   W.printHex("Flags 2", Flags->flags2);
2550 }
2551 
2552 template <class ELFT>
2553 static void printMipsReginfoData(ScopedPrinter &W,
2554                                  const Elf_Mips_RegInfo<ELFT> &Reginfo) {
2555   W.printHex("GP", Reginfo.ri_gp_value);
2556   W.printHex("General Mask", Reginfo.ri_gprmask);
2557   W.printHex("Co-Proc Mask0", Reginfo.ri_cprmask[0]);
2558   W.printHex("Co-Proc Mask1", Reginfo.ri_cprmask[1]);
2559   W.printHex("Co-Proc Mask2", Reginfo.ri_cprmask[2]);
2560   W.printHex("Co-Proc Mask3", Reginfo.ri_cprmask[3]);
2561 }
2562 
2563 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() {
2564   const ELFFile<ELFT> *Obj = ObjF->getELFFile();
2565   const Elf_Shdr *Shdr = findSectionByName(*Obj, ObjF->getFileName(), ".reginfo");
2566   if (!Shdr) {
2567     W.startLine() << "There is no .reginfo section in the file.\n";
2568     return;
2569   }
2570   ArrayRef<uint8_t> Sec =
2571       unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr));
2572   if (Sec.size() != sizeof(Elf_Mips_RegInfo<ELFT>)) {
2573     W.startLine() << "The .reginfo section has a wrong size.\n";
2574     return;
2575   }
2576 
2577   DictScope GS(W, "MIPS RegInfo");
2578   auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec.data());
2579   printMipsReginfoData(W, *Reginfo);
2580 }
2581 
2582 template <class ELFT> void ELFDumper<ELFT>::printMipsOptions() {
2583   const ELFFile<ELFT> *Obj = ObjF->getELFFile();
2584   const Elf_Shdr *Shdr =
2585       findSectionByName(*Obj, ObjF->getFileName(), ".MIPS.options");
2586   if (!Shdr) {
2587     W.startLine() << "There is no .MIPS.options section in the file.\n";
2588     return;
2589   }
2590 
2591   DictScope GS(W, "MIPS Options");
2592 
2593   ArrayRef<uint8_t> Sec =
2594       unwrapOrError(ObjF->getFileName(), Obj->getSectionContents(Shdr));
2595   while (!Sec.empty()) {
2596     if (Sec.size() < sizeof(Elf_Mips_Options<ELFT>)) {
2597       W.startLine() << "The .MIPS.options section has a wrong size.\n";
2598       return;
2599     }
2600     auto *O = reinterpret_cast<const Elf_Mips_Options<ELFT> *>(Sec.data());
2601     DictScope GS(W, getElfMipsOptionsOdkType(O->kind));
2602     switch (O->kind) {
2603     case ODK_REGINFO:
2604       printMipsReginfoData(W, O->getRegInfo());
2605       break;
2606     default:
2607       W.startLine() << "Unsupported MIPS options tag.\n";
2608       break;
2609     }
2610     Sec = Sec.slice(O->size);
2611   }
2612 }
2613 
2614 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const {
2615   const ELFFile<ELFT> *Obj = ObjF->getELFFile();
2616   const Elf_Shdr *StackMapSection = nullptr;
2617   for (const auto &Sec : unwrapOrError(ObjF->getFileName(), Obj->sections())) {
2618     StringRef Name =
2619         unwrapOrError(ObjF->getFileName(), Obj->getSectionName(&Sec));
2620     if (Name == ".llvm_stackmaps") {
2621       StackMapSection = &Sec;
2622       break;
2623     }
2624   }
2625 
2626   if (!StackMapSection)
2627     return;
2628 
2629   ArrayRef<uint8_t> StackMapContentsArray = unwrapOrError(
2630       ObjF->getFileName(), Obj->getSectionContents(StackMapSection));
2631 
2632   prettyPrintStackMap(
2633       W, StackMapParser<ELFT::TargetEndianness>(StackMapContentsArray));
2634 }
2635 
2636 template <class ELFT> void ELFDumper<ELFT>::printGroupSections() {
2637   ELFDumperStyle->printGroupSections(ObjF->getELFFile());
2638 }
2639 
2640 template <class ELFT> void ELFDumper<ELFT>::printAddrsig() {
2641   ELFDumperStyle->printAddrsig(ObjF->getELFFile());
2642 }
2643 
2644 static inline void printFields(formatted_raw_ostream &OS, StringRef Str1,
2645                                StringRef Str2) {
2646   OS.PadToColumn(2u);
2647   OS << Str1;
2648   OS.PadToColumn(37u);
2649   OS << Str2 << "\n";
2650   OS.flush();
2651 }
2652 
2653 template <class ELFT>
2654 static std::string getSectionHeadersNumString(const ELFFile<ELFT> *Obj,
2655                                               StringRef FileName) {
2656   const typename ELFT::Ehdr *ElfHeader = Obj->getHeader();
2657   if (ElfHeader->e_shnum != 0)
2658     return to_string(ElfHeader->e_shnum);
2659 
2660   ArrayRef<typename ELFT::Shdr> Arr = unwrapOrError(FileName, Obj->sections());
2661   if (Arr.empty())
2662     return "0";
2663   return "0 (" + to_string(Arr[0].sh_size) + ")";
2664 }
2665 
2666 template <class ELFT>
2667 static std::string getSectionHeaderTableIndexString(const ELFFile<ELFT> *Obj,
2668                                                     StringRef FileName) {
2669   const typename ELFT::Ehdr *ElfHeader = Obj->getHeader();
2670   if (ElfHeader->e_shstrndx != SHN_XINDEX)
2671     return to_string(ElfHeader->e_shstrndx);
2672 
2673   ArrayRef<typename ELFT::Shdr> Arr = unwrapOrError(FileName, Obj->sections());
2674   if (Arr.empty())
2675     return "65535 (corrupt: out of range)";
2676   return to_string(ElfHeader->e_shstrndx) + " (" + to_string(Arr[0].sh_link) +
2677          ")";
2678 }
2679 
2680 template <class ELFT> void GNUStyle<ELFT>::printFileHeaders(const ELFO *Obj) {
2681   const Elf_Ehdr *e = Obj->getHeader();
2682   OS << "ELF Header:\n";
2683   OS << "  Magic:  ";
2684   std::string Str;
2685   for (int i = 0; i < ELF::EI_NIDENT; i++)
2686     OS << format(" %02x", static_cast<int>(e->e_ident[i]));
2687   OS << "\n";
2688   Str = printEnum(e->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass));
2689   printFields(OS, "Class:", Str);
2690   Str = printEnum(e->e_ident[ELF::EI_DATA], makeArrayRef(ElfDataEncoding));
2691   printFields(OS, "Data:", Str);
2692   OS.PadToColumn(2u);
2693   OS << "Version:";
2694   OS.PadToColumn(37u);
2695   OS << to_hexString(e->e_ident[ELF::EI_VERSION]);
2696   if (e->e_version == ELF::EV_CURRENT)
2697     OS << " (current)";
2698   OS << "\n";
2699   Str = printEnum(e->e_ident[ELF::EI_OSABI], makeArrayRef(ElfOSABI));
2700   printFields(OS, "OS/ABI:", Str);
2701   Str = "0x" + to_hexString(e->e_ident[ELF::EI_ABIVERSION]);
2702   printFields(OS, "ABI Version:", Str);
2703   Str = printEnum(e->e_type, makeArrayRef(ElfObjectFileType));
2704   printFields(OS, "Type:", Str);
2705   Str = printEnum(e->e_machine, makeArrayRef(ElfMachineType));
2706   printFields(OS, "Machine:", Str);
2707   Str = "0x" + to_hexString(e->e_version);
2708   printFields(OS, "Version:", Str);
2709   Str = "0x" + to_hexString(e->e_entry);
2710   printFields(OS, "Entry point address:", Str);
2711   Str = to_string(e->e_phoff) + " (bytes into file)";
2712   printFields(OS, "Start of program headers:", Str);
2713   Str = to_string(e->e_shoff) + " (bytes into file)";
2714   printFields(OS, "Start of section headers:", Str);
2715   std::string ElfFlags;
2716   if (e->e_machine == EM_MIPS)
2717     ElfFlags =
2718         printFlags(e->e_flags, makeArrayRef(ElfHeaderMipsFlags),
2719                    unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI),
2720                    unsigned(ELF::EF_MIPS_MACH));
2721   else if (e->e_machine == EM_RISCV)
2722     ElfFlags = printFlags(e->e_flags, makeArrayRef(ElfHeaderRISCVFlags));
2723   Str = "0x" + to_hexString(e->e_flags);
2724   if (!ElfFlags.empty())
2725     Str = Str + ", " + ElfFlags;
2726   printFields(OS, "Flags:", Str);
2727   Str = to_string(e->e_ehsize) + " (bytes)";
2728   printFields(OS, "Size of this header:", Str);
2729   Str = to_string(e->e_phentsize) + " (bytes)";
2730   printFields(OS, "Size of program headers:", Str);
2731   Str = to_string(e->e_phnum);
2732   printFields(OS, "Number of program headers:", Str);
2733   Str = to_string(e->e_shentsize) + " (bytes)";
2734   printFields(OS, "Size of section headers:", Str);
2735   Str = getSectionHeadersNumString(Obj, this->FileName);
2736   printFields(OS, "Number of section headers:", Str);
2737   Str = getSectionHeaderTableIndexString(Obj, this->FileName);
2738   printFields(OS, "Section header string table index:", Str);
2739 }
2740 
2741 namespace {
2742 struct GroupMember {
2743   StringRef Name;
2744   uint64_t Index;
2745 };
2746 
2747 struct GroupSection {
2748   StringRef Name;
2749   std::string Signature;
2750   uint64_t ShName;
2751   uint64_t Index;
2752   uint32_t Link;
2753   uint32_t Info;
2754   uint32_t Type;
2755   std::vector<GroupMember> Members;
2756 };
2757 
2758 template <class ELFT>
2759 std::vector<GroupSection> getGroups(const ELFFile<ELFT> *Obj,
2760                                     StringRef FileName) {
2761   using Elf_Shdr = typename ELFT::Shdr;
2762   using Elf_Sym = typename ELFT::Sym;
2763   using Elf_Word = typename ELFT::Word;
2764 
2765   std::vector<GroupSection> Ret;
2766   uint64_t I = 0;
2767   for (const Elf_Shdr &Sec : unwrapOrError(FileName, Obj->sections())) {
2768     ++I;
2769     if (Sec.sh_type != ELF::SHT_GROUP)
2770       continue;
2771 
2772     const Elf_Shdr *Symtab =
2773         unwrapOrError(FileName, Obj->getSection(Sec.sh_link));
2774     StringRef StrTable =
2775         unwrapOrError(FileName, Obj->getStringTableForSymtab(*Symtab));
2776     const Elf_Sym *Sym = unwrapOrError(
2777         FileName, Obj->template getEntry<Elf_Sym>(Symtab, Sec.sh_info));
2778     auto Data = unwrapOrError(
2779         FileName, Obj->template getSectionContentsAsArray<Elf_Word>(&Sec));
2780 
2781     StringRef Name = unwrapOrError(FileName, Obj->getSectionName(&Sec));
2782     StringRef Signature = StrTable.data() + Sym->st_name;
2783     Ret.push_back({Name,
2784                    maybeDemangle(Signature),
2785                    Sec.sh_name,
2786                    I - 1,
2787                    Sec.sh_link,
2788                    Sec.sh_info,
2789                    Data[0],
2790                    {}});
2791 
2792     std::vector<GroupMember> &GM = Ret.back().Members;
2793     for (uint32_t Ndx : Data.slice(1)) {
2794       auto Sec = unwrapOrError(FileName, Obj->getSection(Ndx));
2795       const StringRef Name = unwrapOrError(FileName, Obj->getSectionName(Sec));
2796       GM.push_back({Name, Ndx});
2797     }
2798   }
2799   return Ret;
2800 }
2801 
2802 DenseMap<uint64_t, const GroupSection *>
2803 mapSectionsToGroups(ArrayRef<GroupSection> Groups) {
2804   DenseMap<uint64_t, const GroupSection *> Ret;
2805   for (const GroupSection &G : Groups)
2806     for (const GroupMember &GM : G.Members)
2807       Ret.insert({GM.Index, &G});
2808   return Ret;
2809 }
2810 
2811 } // namespace
2812 
2813 template <class ELFT> void GNUStyle<ELFT>::printGroupSections(const ELFO *Obj) {
2814   std::vector<GroupSection> V = getGroups<ELFT>(Obj, this->FileName);
2815   DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V);
2816   for (const GroupSection &G : V) {
2817     OS << "\n"
2818        << getGroupType(G.Type) << " group section ["
2819        << format_decimal(G.Index, 5) << "] `" << G.Name << "' [" << G.Signature
2820        << "] contains " << G.Members.size() << " sections:\n"
2821        << "   [Index]    Name\n";
2822     for (const GroupMember &GM : G.Members) {
2823       const GroupSection *MainGroup = Map[GM.Index];
2824       if (MainGroup != &G) {
2825         OS.flush();
2826         errs() << "Error: section [" << format_decimal(GM.Index, 5)
2827                << "] in group section [" << format_decimal(G.Index, 5)
2828                << "] already in group section ["
2829                << format_decimal(MainGroup->Index, 5) << "]";
2830         errs().flush();
2831         continue;
2832       }
2833       OS << "   [" << format_decimal(GM.Index, 5) << "]   " << GM.Name << "\n";
2834     }
2835   }
2836 
2837   if (V.empty())
2838     OS << "There are no section groups in this file.\n";
2839 }
2840 
2841 template <class ELFT>
2842 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Shdr *SymTab,
2843                                      const Elf_Rela &R, bool IsRela) {
2844   const Elf_Sym *Sym =
2845       unwrapOrError(this->FileName, Obj->getRelocationSymbol(&R, SymTab));
2846   std::string TargetName;
2847   if (Sym && Sym->getType() == ELF::STT_SECTION) {
2848     const Elf_Shdr *Sec = unwrapOrError(
2849         this->FileName,
2850         Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable()));
2851     TargetName = unwrapOrError(this->FileName, Obj->getSectionName(Sec));
2852   } else if (Sym) {
2853     StringRef StrTable =
2854         unwrapOrError(this->FileName, Obj->getStringTableForSymtab(*SymTab));
2855     TargetName = this->dumper()->getFullSymbolName(
2856         Sym, StrTable, SymTab->sh_type == SHT_DYNSYM /* IsDynamic */);
2857   }
2858   printRelocation(Obj, Sym, TargetName, R, IsRela);
2859 }
2860 
2861 template <class ELFT>
2862 void GNUStyle<ELFT>::printRelocation(const ELFO *Obj, const Elf_Sym *Sym,
2863                                      StringRef SymbolName, const Elf_Rela &R,
2864                                      bool IsRela) {
2865   // First two fields are bit width dependent. The rest of them are fixed width.
2866   unsigned Bias = ELFT::Is64Bits ? 8 : 0;
2867   Field Fields[5] = {0, 10 + Bias, 19 + 2 * Bias, 42 + 2 * Bias, 53 + 2 * Bias};
2868   unsigned Width = ELFT::Is64Bits ? 16 : 8;
2869 
2870   Fields[0].Str = to_string(format_hex_no_prefix(R.r_offset, Width));
2871   Fields[1].Str = to_string(format_hex_no_prefix(R.r_info, Width));
2872 
2873   SmallString<32> RelocName;
2874   Obj->getRelocationTypeName(R.getType(Obj->isMips64EL()), RelocName);
2875   Fields[2].Str = RelocName.c_str();
2876 
2877   if (Sym && (!SymbolName.empty() || Sym->getValue() != 0))
2878     Fields[3].Str = to_string(format_hex_no_prefix(Sym->getValue(), Width));
2879 
2880   Fields[4].Str = SymbolName;
2881   for (const Field &F : Fields)
2882     printField(F);
2883 
2884   std::string Addend;
2885   if (IsRela) {
2886     int64_t RelAddend = R.r_addend;
2887     if (!SymbolName.empty()) {
2888       if (R.r_addend < 0) {
2889         Addend = " - ";
2890         RelAddend = std::abs(RelAddend);
2891       } else
2892         Addend = " + ";
2893     }
2894 
2895     Addend += to_hexString(RelAddend, false);
2896   }
2897   OS << Addend << "\n";
2898 }
2899 
2900 template <class ELFT> void GNUStyle<ELFT>::printRelocHeader(unsigned SType) {
2901   bool IsRela = SType == ELF::SHT_RELA || SType == ELF::SHT_ANDROID_RELA;
2902   bool IsRelr = SType == ELF::SHT_RELR || SType == ELF::SHT_ANDROID_RELR;
2903   if (ELFT::Is64Bits)
2904     OS << "    ";
2905   else
2906     OS << " ";
2907   if (IsRelr && opts::RawRelr)
2908     OS << "Data  ";
2909   else
2910     OS << "Offset";
2911   if (ELFT::Is64Bits)
2912     OS << "             Info             Type"
2913        << "               Symbol's Value  Symbol's Name";
2914   else
2915     OS << "     Info    Type                Sym. Value  Symbol's Name";
2916   if (IsRela)
2917     OS << " + Addend";
2918   OS << "\n";
2919 }
2920 
2921 template <class ELFT> void GNUStyle<ELFT>::printRelocations(const ELFO *Obj) {
2922   bool HasRelocSections = false;
2923   for (const Elf_Shdr &Sec : unwrapOrError(this->FileName, Obj->sections())) {
2924     if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA &&
2925         Sec.sh_type != ELF::SHT_RELR && Sec.sh_type != ELF::SHT_ANDROID_REL &&
2926         Sec.sh_type != ELF::SHT_ANDROID_RELA &&
2927         Sec.sh_type != ELF::SHT_ANDROID_RELR)
2928       continue;
2929     HasRelocSections = true;
2930     StringRef Name = unwrapOrError(this->FileName, Obj->getSectionName(&Sec));
2931     unsigned Entries = Sec.getEntityCount();
2932     std::vector<Elf_Rela> AndroidRelas;
2933     if (Sec.sh_type == ELF::SHT_ANDROID_REL ||
2934         Sec.sh_type == ELF::SHT_ANDROID_RELA) {
2935       // Android's packed relocation section needs to be unpacked first
2936       // to get the actual number of entries.
2937       AndroidRelas = unwrapOrError(this->FileName, Obj->android_relas(&Sec));
2938       Entries = AndroidRelas.size();
2939     }
2940     std::vector<Elf_Rela> RelrRelas;
2941     if (!opts::RawRelr && (Sec.sh_type == ELF::SHT_RELR ||
2942                            Sec.sh_type == ELF::SHT_ANDROID_RELR)) {
2943       // .relr.dyn relative relocation section needs to be unpacked first
2944       // to get the actual number of entries.
2945       Elf_Relr_Range Relrs = unwrapOrError(this->FileName, Obj->relrs(&Sec));
2946       RelrRelas = unwrapOrError(this->FileName, Obj->decode_relrs(Relrs));
2947       Entries = RelrRelas.size();
2948     }
2949     uintX_t Offset = Sec.sh_offset;
2950     OS << "\nRelocation section '" << Name << "' at offset 0x"
2951        << to_hexString(Offset, false) << " contains " << Entries
2952        << " entries:\n";
2953     printRelocHeader(Sec.sh_type);
2954     const Elf_Shdr *SymTab =
2955         unwrapOrError(this->FileName, Obj->getSection(Sec.sh_link));
2956     switch (Sec.sh_type) {
2957     case ELF::SHT_REL:
2958       for (const auto &R : unwrapOrError(this->FileName, Obj->rels(&Sec))) {
2959         Elf_Rela Rela;
2960         Rela.r_offset = R.r_offset;
2961         Rela.r_info = R.r_info;
2962         Rela.r_addend = 0;
2963         printRelocation(Obj, SymTab, Rela, false);
2964       }
2965       break;
2966     case ELF::SHT_RELA:
2967       for (const auto &R : unwrapOrError(this->FileName, Obj->relas(&Sec)))
2968         printRelocation(Obj, SymTab, R, true);
2969       break;
2970     case ELF::SHT_RELR:
2971     case ELF::SHT_ANDROID_RELR:
2972       if (opts::RawRelr)
2973         for (const auto &R : unwrapOrError(this->FileName, Obj->relrs(&Sec)))
2974           OS << to_string(format_hex_no_prefix(R, ELFT::Is64Bits ? 16 : 8))
2975              << "\n";
2976       else
2977         for (const auto &R : RelrRelas)
2978           printRelocation(Obj, SymTab, R, false);
2979       break;
2980     case ELF::SHT_ANDROID_REL:
2981     case ELF::SHT_ANDROID_RELA:
2982       for (const auto &R : AndroidRelas)
2983         printRelocation(Obj, SymTab, R, Sec.sh_type == ELF::SHT_ANDROID_RELA);
2984       break;
2985     }
2986   }
2987   if (!HasRelocSections)
2988     OS << "\nThere are no relocations in this file.\n";
2989 }
2990 
2991 // Print the offset of a particular section from anyone of the ranges:
2992 // [SHT_LOOS, SHT_HIOS], [SHT_LOPROC, SHT_HIPROC], [SHT_LOUSER, SHT_HIUSER].
2993 // If 'Type' does not fall within any of those ranges, then a string is
2994 // returned as '<unknown>' followed by the type value.
2995 static std::string getSectionTypeOffsetString(unsigned Type) {
2996   if (Type >= SHT_LOOS && Type <= SHT_HIOS)
2997     return "LOOS+0x" + to_hexString(Type - SHT_LOOS);
2998   else if (Type >= SHT_LOPROC && Type <= SHT_HIPROC)
2999     return "LOPROC+0x" + to_hexString(Type - SHT_LOPROC);
3000   else if (Type >= SHT_LOUSER && Type <= SHT_HIUSER)
3001     return "LOUSER+0x" + to_hexString(Type - SHT_LOUSER);
3002   return "0x" + to_hexString(Type) + ": <unknown>";
3003 }
3004 
3005 static std::string getSectionTypeString(unsigned Arch, unsigned Type) {
3006   using namespace ELF;
3007 
3008   switch (Arch) {
3009   case EM_ARM:
3010     switch (Type) {
3011     case SHT_ARM_EXIDX:
3012       return "ARM_EXIDX";
3013     case SHT_ARM_PREEMPTMAP:
3014       return "ARM_PREEMPTMAP";
3015     case SHT_ARM_ATTRIBUTES:
3016       return "ARM_ATTRIBUTES";
3017     case SHT_ARM_DEBUGOVERLAY:
3018       return "ARM_DEBUGOVERLAY";
3019     case SHT_ARM_OVERLAYSECTION:
3020       return "ARM_OVERLAYSECTION";
3021     }
3022     break;
3023   case EM_X86_64:
3024     switch (Type) {
3025     case SHT_X86_64_UNWIND:
3026       return "X86_64_UNWIND";
3027     }
3028     break;
3029   case EM_MIPS:
3030   case EM_MIPS_RS3_LE:
3031     switch (Type) {
3032     case SHT_MIPS_REGINFO:
3033       return "MIPS_REGINFO";
3034     case SHT_MIPS_OPTIONS:
3035       return "MIPS_OPTIONS";
3036     case SHT_MIPS_DWARF:
3037       return "MIPS_DWARF";
3038     case SHT_MIPS_ABIFLAGS:
3039       return "MIPS_ABIFLAGS";
3040     }
3041     break;
3042   }
3043   switch (Type) {
3044   case SHT_NULL:
3045     return "NULL";
3046   case SHT_PROGBITS:
3047     return "PROGBITS";
3048   case SHT_SYMTAB:
3049     return "SYMTAB";
3050   case SHT_STRTAB:
3051     return "STRTAB";
3052   case SHT_RELA:
3053     return "RELA";
3054   case SHT_HASH:
3055     return "HASH";
3056   case SHT_DYNAMIC:
3057     return "DYNAMIC";
3058   case SHT_NOTE:
3059     return "NOTE";
3060   case SHT_NOBITS:
3061     return "NOBITS";
3062   case SHT_REL:
3063     return "REL";
3064   case SHT_SHLIB:
3065     return "SHLIB";
3066   case SHT_DYNSYM:
3067     return "DYNSYM";
3068   case SHT_INIT_ARRAY:
3069     return "INIT_ARRAY";
3070   case SHT_FINI_ARRAY:
3071     return "FINI_ARRAY";
3072   case SHT_PREINIT_ARRAY:
3073     return "PREINIT_ARRAY";
3074   case SHT_GROUP:
3075     return "GROUP";
3076   case SHT_SYMTAB_SHNDX:
3077     return "SYMTAB SECTION INDICES";
3078   case SHT_ANDROID_REL:
3079     return "ANDROID_REL";
3080   case SHT_ANDROID_RELA:
3081     return "ANDROID_RELA";
3082   case SHT_RELR:
3083   case SHT_ANDROID_RELR:
3084     return "RELR";
3085   case SHT_LLVM_ODRTAB:
3086     return "LLVM_ODRTAB";
3087   case SHT_LLVM_LINKER_OPTIONS:
3088     return "LLVM_LINKER_OPTIONS";
3089   case SHT_LLVM_CALL_GRAPH_PROFILE:
3090     return "LLVM_CALL_GRAPH_PROFILE";
3091   case SHT_LLVM_ADDRSIG:
3092     return "LLVM_ADDRSIG";
3093   case SHT_LLVM_DEPENDENT_LIBRARIES:
3094     return "LLVM_DEPENDENT_LIBRARIES";
3095   // FIXME: Parse processor specific GNU attributes
3096   case SHT_GNU_ATTRIBUTES:
3097     return "ATTRIBUTES";
3098   case SHT_GNU_HASH:
3099     return "GNU_HASH";
3100   case SHT_GNU_verdef:
3101     return "VERDEF";
3102   case SHT_GNU_verneed:
3103     return "VERNEED";
3104   case SHT_GNU_versym:
3105     return "VERSYM";
3106   default:
3107     return getSectionTypeOffsetString(Type);
3108   }
3109   return "";
3110 }
3111 
3112 template <class ELFT>
3113 void GNUStyle<ELFT>::printSectionHeaders(const ELFO *Obj) {
3114   unsigned Bias = ELFT::Is64Bits ? 0 : 8;
3115   ArrayRef<Elf_Shdr> Sections = unwrapOrError(this->FileName, Obj->sections());
3116   OS << "There are " << to_string(Sections.size())
3117      << " section headers, starting at offset "
3118      << "0x" << to_hexString(Obj->getHeader()->e_shoff, false) << ":\n\n";
3119   OS << "Section Headers:\n";
3120   Field Fields[11] = {
3121       {"[Nr]", 2},        {"Name", 7},        {"Type", 25},
3122       {"Address", 41},    {"Off", 58 - Bias}, {"Size", 65 - Bias},
3123       {"ES", 72 - Bias},  {"Flg", 75 - Bias}, {"Lk", 79 - Bias},
3124       {"Inf", 82 - Bias}, {"Al", 86 - Bias}};
3125   for (auto &F : Fields)
3126     printField(F);
3127   OS << "\n";
3128 
3129   const ELFObjectFile<ELFT> *ElfObj = this->dumper()->getElfObject();
3130   size_t SectionIndex = 0;
3131   for (const Elf_Shdr &Sec : Sections) {
3132     Fields[0].Str = to_string(SectionIndex);
3133     Fields[1].Str = unwrapOrError<StringRef>(
3134         ElfObj->getFileName(), Obj->getSectionName(&Sec, this->WarningHandler));
3135     Fields[2].Str =
3136         getSectionTypeString(Obj->getHeader()->e_machine, Sec.sh_type);
3137     Fields[3].Str =
3138         to_string(format_hex_no_prefix(Sec.sh_addr, ELFT::Is64Bits ? 16 : 8));
3139     Fields[4].Str = to_string(format_hex_no_prefix(Sec.sh_offset, 6));
3140     Fields[5].Str = to_string(format_hex_no_prefix(Sec.sh_size, 6));
3141     Fields[6].Str = to_string(format_hex_no_prefix(Sec.sh_entsize, 2));
3142     Fields[7].Str = getGNUFlags(Sec.sh_flags);
3143     Fields[8].Str = to_string(Sec.sh_link);
3144     Fields[9].Str = to_string(Sec.sh_info);
3145     Fields[10].Str = to_string(Sec.sh_addralign);
3146 
3147     OS.PadToColumn(Fields[0].Column);
3148     OS << "[" << right_justify(Fields[0].Str, 2) << "]";
3149     for (int i = 1; i < 7; i++)
3150       printField(Fields[i]);
3151     OS.PadToColumn(Fields[7].Column);
3152     OS << right_justify(Fields[7].Str, 3);
3153     OS.PadToColumn(Fields[8].Column);
3154     OS << right_justify(Fields[8].Str, 2);
3155     OS.PadToColumn(Fields[9].Column);
3156     OS << right_justify(Fields[9].Str, 3);
3157     OS.PadToColumn(Fields[10].Column);
3158     OS << right_justify(Fields[10].Str, 2);
3159     OS << "\n";
3160     ++SectionIndex;
3161   }
3162   OS << "Key to Flags:\n"
3163      << "  W (write), A (alloc), X (execute), M (merge), S (strings), l "
3164         "(large)\n"
3165      << "  I (info), L (link order), G (group), T (TLS), E (exclude),\
3166  x (unknown)\n"
3167      << "  O (extra OS processing required) o (OS specific),\
3168  p (processor specific)\n";
3169 }
3170 
3171 template <class ELFT>
3172 void GNUStyle<ELFT>::printSymtabMessage(const ELFO *Obj, StringRef Name,
3173                                         size_t Entries) {
3174   if (!Name.empty())
3175     OS << "\nSymbol table '" << Name << "' contains " << Entries
3176        << " entries:\n";
3177   else
3178     OS << "\n Symbol table for image:\n";
3179 
3180   if (ELFT::Is64Bits)
3181     OS << "   Num:    Value          Size Type    Bind   Vis      Ndx Name\n";
3182   else
3183     OS << "   Num:    Value  Size Type    Bind   Vis      Ndx Name\n";
3184 }
3185 
3186 template <class ELFT>
3187 std::string GNUStyle<ELFT>::getSymbolSectionNdx(const ELFO *Obj,
3188                                                 const Elf_Sym *Symbol,
3189                                                 const Elf_Sym *FirstSym) {
3190   unsigned SectionIndex = Symbol->st_shndx;
3191   switch (SectionIndex) {
3192   case ELF::SHN_UNDEF:
3193     return "UND";
3194   case ELF::SHN_ABS:
3195     return "ABS";
3196   case ELF::SHN_COMMON:
3197     return "COM";
3198   case ELF::SHN_XINDEX:
3199     return to_string(format_decimal(
3200         unwrapOrError(this->FileName,
3201                       object::getExtendedSymbolTableIndex<ELFT>(
3202                           Symbol, FirstSym, this->dumper()->getShndxTable())),
3203         3));
3204   default:
3205     // Find if:
3206     // Processor specific
3207     if (SectionIndex >= ELF::SHN_LOPROC && SectionIndex <= ELF::SHN_HIPROC)
3208       return std::string("PRC[0x") +
3209              to_string(format_hex_no_prefix(SectionIndex, 4)) + "]";
3210     // OS specific
3211     if (SectionIndex >= ELF::SHN_LOOS && SectionIndex <= ELF::SHN_HIOS)
3212       return std::string("OS[0x") +
3213              to_string(format_hex_no_prefix(SectionIndex, 4)) + "]";
3214     // Architecture reserved:
3215     if (SectionIndex >= ELF::SHN_LORESERVE &&
3216         SectionIndex <= ELF::SHN_HIRESERVE)
3217       return std::string("RSV[0x") +
3218              to_string(format_hex_no_prefix(SectionIndex, 4)) + "]";
3219     // A normal section with an index
3220     return to_string(format_decimal(SectionIndex, 3));
3221   }
3222 }
3223 
3224 template <class ELFT>
3225 void GNUStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol,
3226                                  const Elf_Sym *FirstSym, StringRef StrTable,
3227                                  bool IsDynamic) {
3228   static int Idx = 0;
3229   static bool Dynamic = true;
3230 
3231   // If this function was called with a different value from IsDynamic
3232   // from last call, happens when we move from dynamic to static symbol
3233   // table, "Num" field should be reset.
3234   if (!Dynamic != !IsDynamic) {
3235     Idx = 0;
3236     Dynamic = false;
3237   }
3238 
3239   unsigned Bias = ELFT::Is64Bits ? 8 : 0;
3240   Field Fields[8] = {0,         8,         17 + Bias, 23 + Bias,
3241                      31 + Bias, 38 + Bias, 47 + Bias, 51 + Bias};
3242   Fields[0].Str = to_string(format_decimal(Idx++, 6)) + ":";
3243   Fields[1].Str = to_string(
3244       format_hex_no_prefix(Symbol->st_value, ELFT::Is64Bits ? 16 : 8));
3245   Fields[2].Str = to_string(format_decimal(Symbol->st_size, 5));
3246 
3247   unsigned char SymbolType = Symbol->getType();
3248   if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU &&
3249       SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS)
3250     Fields[3].Str = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes));
3251   else
3252     Fields[3].Str = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes));
3253 
3254   Fields[4].Str =
3255       printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings));
3256   Fields[5].Str =
3257       printEnum(Symbol->getVisibility(), makeArrayRef(ElfSymbolVisibilities));
3258   Fields[6].Str = getSymbolSectionNdx(Obj, Symbol, FirstSym);
3259   Fields[7].Str =
3260       this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic);
3261   for (auto &Entry : Fields)
3262     printField(Entry);
3263   OS << "\n";
3264 }
3265 
3266 template <class ELFT>
3267 void GNUStyle<ELFT>::printHashedSymbol(const ELFO *Obj, const Elf_Sym *FirstSym,
3268                                        uint32_t Sym, StringRef StrTable,
3269                                        uint32_t Bucket) {
3270   unsigned Bias = ELFT::Is64Bits ? 8 : 0;
3271   Field Fields[9] = {0,         6,         11,        20 + Bias, 25 + Bias,
3272                      34 + Bias, 41 + Bias, 49 + Bias, 53 + Bias};
3273   Fields[0].Str = to_string(format_decimal(Sym, 5));
3274   Fields[1].Str = to_string(format_decimal(Bucket, 3)) + ":";
3275 
3276   const auto Symbol = FirstSym + Sym;
3277   Fields[2].Str = to_string(
3278       format_hex_no_prefix(Symbol->st_value, ELFT::Is64Bits ? 16 : 8));
3279   Fields[3].Str = to_string(format_decimal(Symbol->st_size, 5));
3280 
3281   unsigned char SymbolType = Symbol->getType();
3282   if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU &&
3283       SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS)
3284     Fields[4].Str = printEnum(SymbolType, makeArrayRef(AMDGPUSymbolTypes));
3285   else
3286     Fields[4].Str = printEnum(SymbolType, makeArrayRef(ElfSymbolTypes));
3287 
3288   Fields[5].Str =
3289       printEnum(Symbol->getBinding(), makeArrayRef(ElfSymbolBindings));
3290   Fields[6].Str =
3291       printEnum(Symbol->getVisibility(), makeArrayRef(ElfSymbolVisibilities));
3292   Fields[7].Str = getSymbolSectionNdx(Obj, Symbol, FirstSym);
3293   Fields[8].Str = this->dumper()->getFullSymbolName(Symbol, StrTable, true);
3294 
3295   for (auto &Entry : Fields)
3296     printField(Entry);
3297   OS << "\n";
3298 }
3299 
3300 template <class ELFT>
3301 void GNUStyle<ELFT>::printSymbols(const ELFO *Obj, bool PrintSymbols,
3302                                   bool PrintDynamicSymbols) {
3303   if (!PrintSymbols && !PrintDynamicSymbols)
3304     return;
3305   // GNU readelf prints both the .dynsym and .symtab with --symbols.
3306   this->dumper()->printSymbolsHelper(true);
3307   if (PrintSymbols)
3308     this->dumper()->printSymbolsHelper(false);
3309 }
3310 
3311 template <class ELFT> void GNUStyle<ELFT>::printHashSymbols(const ELFO *Obj) {
3312   if (this->dumper()->getDynamicStringTable().empty())
3313     return;
3314   auto StringTable = this->dumper()->getDynamicStringTable();
3315   auto DynSyms = this->dumper()->dynamic_symbols();
3316 
3317   // Try printing .hash
3318   if (auto SysVHash = this->dumper()->getHashTable()) {
3319     OS << "\n Symbol table of .hash for image:\n";
3320     if (ELFT::Is64Bits)
3321       OS << "  Num Buc:    Value          Size   Type   Bind Vis      Ndx Name";
3322     else
3323       OS << "  Num Buc:    Value  Size   Type   Bind Vis      Ndx Name";
3324     OS << "\n";
3325 
3326     auto Buckets = SysVHash->buckets();
3327     auto Chains = SysVHash->chains();
3328     for (uint32_t Buc = 0; Buc < SysVHash->nbucket; Buc++) {
3329       if (Buckets[Buc] == ELF::STN_UNDEF)
3330         continue;
3331       for (uint32_t Ch = Buckets[Buc]; Ch < SysVHash->nchain; Ch = Chains[Ch]) {
3332         if (Ch == ELF::STN_UNDEF)
3333           break;
3334         printHashedSymbol(Obj, &DynSyms[0], Ch, StringTable, Buc);
3335       }
3336     }
3337   }
3338 
3339   // Try printing .gnu.hash
3340   if (auto GnuHash = this->dumper()->getGnuHashTable()) {
3341     OS << "\n Symbol table of .gnu.hash for image:\n";
3342     if (ELFT::Is64Bits)
3343       OS << "  Num Buc:    Value          Size   Type   Bind Vis      Ndx Name";
3344     else
3345       OS << "  Num Buc:    Value  Size   Type   Bind Vis      Ndx Name";
3346     OS << "\n";
3347     auto Buckets = GnuHash->buckets();
3348     for (uint32_t Buc = 0; Buc < GnuHash->nbuckets; Buc++) {
3349       if (Buckets[Buc] == ELF::STN_UNDEF)
3350         continue;
3351       uint32_t Index = Buckets[Buc];
3352       uint32_t GnuHashable = Index - GnuHash->symndx;
3353       // Print whole chain
3354       while (true) {
3355         printHashedSymbol(Obj, &DynSyms[0], Index++, StringTable, Buc);
3356         // Chain ends at symbol with stopper bit
3357         if ((GnuHash->values(DynSyms.size())[GnuHashable++] & 1) == 1)
3358           break;
3359       }
3360     }
3361   }
3362 }
3363 
3364 static inline std::string printPhdrFlags(unsigned Flag) {
3365   std::string Str;
3366   Str = (Flag & PF_R) ? "R" : " ";
3367   Str += (Flag & PF_W) ? "W" : " ";
3368   Str += (Flag & PF_X) ? "E" : " ";
3369   return Str;
3370 }
3371 
3372 // SHF_TLS sections are only in PT_TLS, PT_LOAD or PT_GNU_RELRO
3373 // PT_TLS must only have SHF_TLS sections
3374 template <class ELFT>
3375 bool GNUStyle<ELFT>::checkTLSSections(const Elf_Phdr &Phdr,
3376                                       const Elf_Shdr &Sec) {
3377   return (((Sec.sh_flags & ELF::SHF_TLS) &&
3378            ((Phdr.p_type == ELF::PT_TLS) || (Phdr.p_type == ELF::PT_LOAD) ||
3379             (Phdr.p_type == ELF::PT_GNU_RELRO))) ||
3380           (!(Sec.sh_flags & ELF::SHF_TLS) && Phdr.p_type != ELF::PT_TLS));
3381 }
3382 
3383 // Non-SHT_NOBITS must have its offset inside the segment
3384 // Only non-zero section can be at end of segment
3385 template <class ELFT>
3386 bool GNUStyle<ELFT>::checkoffsets(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) {
3387   if (Sec.sh_type == ELF::SHT_NOBITS)
3388     return true;
3389   bool IsSpecial =
3390       (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0);
3391   // .tbss is special, it only has memory in PT_TLS and has NOBITS properties
3392   auto SectionSize =
3393       (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size;
3394   if (Sec.sh_offset >= Phdr.p_offset)
3395     return ((Sec.sh_offset + SectionSize <= Phdr.p_filesz + Phdr.p_offset)
3396             /*only non-zero sized sections at end*/
3397             && (Sec.sh_offset + 1 <= Phdr.p_offset + Phdr.p_filesz));
3398   return false;
3399 }
3400 
3401 // SHF_ALLOC must have VMA inside segment
3402 // Only non-zero section can be at end of segment
3403 template <class ELFT>
3404 bool GNUStyle<ELFT>::checkVMA(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) {
3405   if (!(Sec.sh_flags & ELF::SHF_ALLOC))
3406     return true;
3407   bool IsSpecial =
3408       (Sec.sh_type == ELF::SHT_NOBITS) && ((Sec.sh_flags & ELF::SHF_TLS) != 0);
3409   // .tbss is special, it only has memory in PT_TLS and has NOBITS properties
3410   auto SectionSize =
3411       (IsSpecial && Phdr.p_type != ELF::PT_TLS) ? 0 : Sec.sh_size;
3412   if (Sec.sh_addr >= Phdr.p_vaddr)
3413     return ((Sec.sh_addr + SectionSize <= Phdr.p_vaddr + Phdr.p_memsz) &&
3414             (Sec.sh_addr + 1 <= Phdr.p_vaddr + Phdr.p_memsz));
3415   return false;
3416 }
3417 
3418 // No section with zero size must be at start or end of PT_DYNAMIC
3419 template <class ELFT>
3420 bool GNUStyle<ELFT>::checkPTDynamic(const Elf_Phdr &Phdr, const Elf_Shdr &Sec) {
3421   if (Phdr.p_type != ELF::PT_DYNAMIC || Sec.sh_size != 0 || Phdr.p_memsz == 0)
3422     return true;
3423   // Is section within the phdr both based on offset and VMA ?
3424   return ((Sec.sh_type == ELF::SHT_NOBITS) ||
3425           (Sec.sh_offset > Phdr.p_offset &&
3426            Sec.sh_offset < Phdr.p_offset + Phdr.p_filesz)) &&
3427          (!(Sec.sh_flags & ELF::SHF_ALLOC) ||
3428           (Sec.sh_addr > Phdr.p_vaddr && Sec.sh_addr < Phdr.p_memsz));
3429 }
3430 
3431 template <class ELFT>
3432 void GNUStyle<ELFT>::printProgramHeaders(
3433     const ELFO *Obj, bool PrintProgramHeaders,
3434     cl::boolOrDefault PrintSectionMapping) {
3435   if (PrintProgramHeaders)
3436     printProgramHeaders(Obj);
3437 
3438   // Display the section mapping along with the program headers, unless
3439   // -section-mapping is explicitly set to false.
3440   if (PrintSectionMapping != cl::BOU_FALSE)
3441     printSectionMapping(Obj);
3442 }
3443 
3444 template <class ELFT>
3445 void GNUStyle<ELFT>::printProgramHeaders(const ELFO *Obj) {
3446   unsigned Bias = ELFT::Is64Bits ? 8 : 0;
3447   const Elf_Ehdr *Header = Obj->getHeader();
3448   Field Fields[8] = {2,         17,        26,        37 + Bias,
3449                      48 + Bias, 56 + Bias, 64 + Bias, 68 + Bias};
3450   OS << "\nElf file type is "
3451      << printEnum(Header->e_type, makeArrayRef(ElfObjectFileType)) << "\n"
3452      << "Entry point " << format_hex(Header->e_entry, 3) << "\n"
3453      << "There are " << Header->e_phnum << " program headers,"
3454      << " starting at offset " << Header->e_phoff << "\n\n"
3455      << "Program Headers:\n";
3456   if (ELFT::Is64Bits)
3457     OS << "  Type           Offset   VirtAddr           PhysAddr         "
3458        << "  FileSiz  MemSiz   Flg Align\n";
3459   else
3460     OS << "  Type           Offset   VirtAddr   PhysAddr   FileSiz "
3461        << "MemSiz  Flg Align\n";
3462 
3463   unsigned Width = ELFT::Is64Bits ? 18 : 10;
3464   unsigned SizeWidth = ELFT::Is64Bits ? 8 : 7;
3465   for (const auto &Phdr :
3466        unwrapOrError(this->FileName, Obj->program_headers())) {
3467     Fields[0].Str = getElfPtType(Header->e_machine, Phdr.p_type);
3468     Fields[1].Str = to_string(format_hex(Phdr.p_offset, 8));
3469     Fields[2].Str = to_string(format_hex(Phdr.p_vaddr, Width));
3470     Fields[3].Str = to_string(format_hex(Phdr.p_paddr, Width));
3471     Fields[4].Str = to_string(format_hex(Phdr.p_filesz, SizeWidth));
3472     Fields[5].Str = to_string(format_hex(Phdr.p_memsz, SizeWidth));
3473     Fields[6].Str = printPhdrFlags(Phdr.p_flags);
3474     Fields[7].Str = to_string(format_hex(Phdr.p_align, 1));
3475     for (auto Field : Fields)
3476       printField(Field);
3477     if (Phdr.p_type == ELF::PT_INTERP) {
3478       OS << "\n      [Requesting program interpreter: ";
3479       OS << reinterpret_cast<const char *>(Obj->base()) + Phdr.p_offset << "]";
3480     }
3481     OS << "\n";
3482   }
3483 }
3484 
3485 template <class ELFT>
3486 void GNUStyle<ELFT>::printSectionMapping(const ELFO *Obj) {
3487   OS << "\n Section to Segment mapping:\n  Segment Sections...\n";
3488   DenseSet<const Elf_Shdr *> BelongsToSegment;
3489   int Phnum = 0;
3490   for (const Elf_Phdr &Phdr :
3491        unwrapOrError(this->FileName, Obj->program_headers())) {
3492     std::string Sections;
3493     OS << format("   %2.2d     ", Phnum++);
3494     for (const Elf_Shdr &Sec : unwrapOrError(this->FileName, Obj->sections())) {
3495       // Check if each section is in a segment and then print mapping.
3496       // readelf additionally makes sure it does not print zero sized sections
3497       // at end of segments and for PT_DYNAMIC both start and end of section
3498       // .tbss must only be shown in PT_TLS section.
3499       bool TbssInNonTLS = (Sec.sh_type == ELF::SHT_NOBITS) &&
3500                           ((Sec.sh_flags & ELF::SHF_TLS) != 0) &&
3501                           Phdr.p_type != ELF::PT_TLS;
3502       if (!TbssInNonTLS && checkTLSSections(Phdr, Sec) &&
3503           checkoffsets(Phdr, Sec) && checkVMA(Phdr, Sec) &&
3504           checkPTDynamic(Phdr, Sec) && (Sec.sh_type != ELF::SHT_NULL)) {
3505         Sections +=
3506             unwrapOrError(this->FileName, Obj->getSectionName(&Sec)).str() +
3507             " ";
3508         BelongsToSegment.insert(&Sec);
3509       }
3510     }
3511     OS << Sections << "\n";
3512     OS.flush();
3513   }
3514 
3515   // Display sections that do not belong to a segment.
3516   std::string Sections;
3517   for (const Elf_Shdr &Sec : unwrapOrError(this->FileName, Obj->sections())) {
3518     if (BelongsToSegment.find(&Sec) == BelongsToSegment.end())
3519       Sections +=
3520           unwrapOrError(this->FileName, Obj->getSectionName(&Sec)).str() + ' ';
3521   }
3522   if (!Sections.empty()) {
3523     OS << "   None  " << Sections << '\n';
3524     OS.flush();
3525   }
3526 }
3527 
3528 template <class ELFT>
3529 void GNUStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela R,
3530                                             bool IsRela) {
3531   uint32_t SymIndex = R.getSymbol(Obj->isMips64EL());
3532   const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex;
3533   std::string SymbolName = maybeDemangle(unwrapOrError(
3534       this->FileName, Sym->getName(this->dumper()->getDynamicStringTable())));
3535   printRelocation(Obj, Sym, SymbolName, R, IsRela);
3536 }
3537 
3538 template <class ELFT> void GNUStyle<ELFT>::printDynamic(const ELFO *Obj) {
3539   Elf_Dyn_Range Table = this->dumper()->dynamic_table();
3540   if (Table.empty())
3541     return;
3542 
3543   const DynRegionInfo &DynamicTableRegion =
3544       this->dumper()->getDynamicTableRegion();
3545 
3546   OS << "Dynamic section at offset "
3547      << format_hex(reinterpret_cast<const uint8_t *>(DynamicTableRegion.Addr) -
3548                        Obj->base(),
3549                    1)
3550      << " contains " << Table.size() << " entries:\n";
3551 
3552   bool Is64 = ELFT::Is64Bits;
3553   if (Is64)
3554     OS << "  Tag                Type                 Name/Value\n";
3555   else
3556     OS << "  Tag        Type                 Name/Value\n";
3557   for (auto Entry : Table) {
3558     uintX_t Tag = Entry.getTag();
3559     std::string TypeString = std::string("(") +
3560                              getTypeString(Obj->getHeader()->e_machine, Tag) +
3561                              ")";
3562     OS << "  " << format_hex(Tag, Is64 ? 18 : 10)
3563        << format(" %-20s ", TypeString.c_str());
3564     this->dumper()->printDynamicEntry(OS, Tag, Entry.getVal());
3565     OS << "\n";
3566   }
3567 }
3568 
3569 template <class ELFT>
3570 void GNUStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) {
3571   const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion();
3572   const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion();
3573   const DynRegionInfo &DynRelrRegion = this->dumper()->getDynRelrRegion();
3574   const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion();
3575   if (DynRelaRegion.Size > 0) {
3576     OS << "\n'RELA' relocation section at offset "
3577        << format_hex(reinterpret_cast<const uint8_t *>(DynRelaRegion.Addr) -
3578                          Obj->base(),
3579                      1)
3580        << " contains " << DynRelaRegion.Size << " bytes:\n";
3581     printRelocHeader(ELF::SHT_RELA);
3582     for (const Elf_Rela &Rela : this->dumper()->dyn_relas())
3583       printDynamicRelocation(Obj, Rela, true);
3584   }
3585   if (DynRelRegion.Size > 0) {
3586     OS << "\n'REL' relocation section at offset "
3587        << format_hex(reinterpret_cast<const uint8_t *>(DynRelRegion.Addr) -
3588                          Obj->base(),
3589                      1)
3590        << " contains " << DynRelRegion.Size << " bytes:\n";
3591     printRelocHeader(ELF::SHT_REL);
3592     for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) {
3593       Elf_Rela Rela;
3594       Rela.r_offset = Rel.r_offset;
3595       Rela.r_info = Rel.r_info;
3596       Rela.r_addend = 0;
3597       printDynamicRelocation(Obj, Rela, false);
3598     }
3599   }
3600   if (DynRelrRegion.Size > 0) {
3601     OS << "\n'RELR' relocation section at offset "
3602        << format_hex(reinterpret_cast<const uint8_t *>(DynRelrRegion.Addr) -
3603                          Obj->base(),
3604                      1)
3605        << " contains " << DynRelrRegion.Size << " bytes:\n";
3606     printRelocHeader(ELF::SHT_REL);
3607     Elf_Relr_Range Relrs = this->dumper()->dyn_relrs();
3608     std::vector<Elf_Rela> RelrRelas =
3609         unwrapOrError(this->FileName, Obj->decode_relrs(Relrs));
3610     for (const Elf_Rela &Rela : RelrRelas) {
3611       printDynamicRelocation(Obj, Rela, false);
3612     }
3613   }
3614   if (DynPLTRelRegion.Size) {
3615     OS << "\n'PLT' relocation section at offset "
3616        << format_hex(reinterpret_cast<const uint8_t *>(DynPLTRelRegion.Addr) -
3617                          Obj->base(),
3618                      1)
3619        << " contains " << DynPLTRelRegion.Size << " bytes:\n";
3620   }
3621   if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela)) {
3622     printRelocHeader(ELF::SHT_RELA);
3623     for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>())
3624       printDynamicRelocation(Obj, Rela, true);
3625   } else {
3626     printRelocHeader(ELF::SHT_REL);
3627     for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) {
3628       Elf_Rela Rela;
3629       Rela.r_offset = Rel.r_offset;
3630       Rela.r_info = Rel.r_info;
3631       Rela.r_addend = 0;
3632       printDynamicRelocation(Obj, Rela, false);
3633     }
3634   }
3635 }
3636 
3637 template <class ELFT>
3638 static void printGNUVersionSectionProlog(formatted_raw_ostream &OS,
3639                                          const Twine &Name, unsigned EntriesNum,
3640                                          const ELFFile<ELFT> *Obj,
3641                                          const typename ELFT::Shdr *Sec,
3642                                          StringRef FileName) {
3643   StringRef SecName = unwrapOrError(FileName, Obj->getSectionName(Sec));
3644   OS << Name << " section '" << SecName << "' "
3645      << "contains " << EntriesNum << " entries:\n";
3646 
3647   const typename ELFT::Shdr *SymTab =
3648       unwrapOrError(FileName, Obj->getSection(Sec->sh_link));
3649   StringRef SymTabName = unwrapOrError(FileName, Obj->getSectionName(SymTab));
3650   OS << " Addr: " << format_hex_no_prefix(Sec->sh_addr, 16)
3651      << "  Offset: " << format_hex(Sec->sh_offset, 8)
3652      << "  Link: " << Sec->sh_link << " (" << SymTabName << ")\n";
3653 }
3654 
3655 template <class ELFT>
3656 void GNUStyle<ELFT>::printVersionSymbolSection(const ELFFile<ELFT> *Obj,
3657                                                const Elf_Shdr *Sec) {
3658   if (!Sec)
3659     return;
3660 
3661   unsigned Entries = Sec->sh_size / sizeof(Elf_Versym);
3662   printGNUVersionSectionProlog(OS, "Version symbols", Entries, Obj, Sec,
3663                                this->FileName);
3664 
3665   const uint8_t *VersymBuf =
3666       reinterpret_cast<const uint8_t *>(Obj->base() + Sec->sh_offset);
3667   const ELFDumper<ELFT> *Dumper = this->dumper();
3668   StringRef StrTable = Dumper->getDynamicStringTable();
3669 
3670   // readelf prints 4 entries per line.
3671   for (uint64_t VersymRow = 0; VersymRow < Entries; VersymRow += 4) {
3672     OS << "  " << format_hex_no_prefix(VersymRow, 3) << ":";
3673 
3674     for (uint64_t VersymIndex = 0;
3675          (VersymIndex < 4) && (VersymIndex + VersymRow) < Entries;
3676          ++VersymIndex) {
3677       const Elf_Versym *Versym =
3678           reinterpret_cast<const Elf_Versym *>(VersymBuf);
3679       switch (Versym->vs_index) {
3680       case 0:
3681         OS << "   0 (*local*)    ";
3682         break;
3683       case 1:
3684         OS << "   1 (*global*)   ";
3685         break;
3686       default:
3687         OS << format("%4x%c", Versym->vs_index & VERSYM_VERSION,
3688                      Versym->vs_index & VERSYM_HIDDEN ? 'h' : ' ');
3689 
3690         bool IsDefault = true;
3691         std::string VersionName = Dumper->getSymbolVersionByIndex(
3692             StrTable, Versym->vs_index, IsDefault);
3693 
3694         if (!VersionName.empty())
3695           VersionName = "(" + VersionName + ")";
3696         else
3697           VersionName = "(*invalid*)";
3698         OS << left_justify(VersionName, 13);
3699       }
3700       VersymBuf += sizeof(Elf_Versym);
3701     }
3702     OS << '\n';
3703   }
3704   OS << '\n';
3705 }
3706 
3707 static std::string versionFlagToString(unsigned Flags) {
3708   if (Flags == 0)
3709     return "none";
3710 
3711   std::string Ret;
3712   auto AddFlag = [&Ret, &Flags](unsigned Flag, StringRef Name) {
3713     if (!(Flags & Flag))
3714       return;
3715     if (!Ret.empty())
3716       Ret += " | ";
3717     Ret += Name;
3718     Flags &= ~Flag;
3719   };
3720 
3721   AddFlag(VER_FLG_BASE, "BASE");
3722   AddFlag(VER_FLG_WEAK, "WEAK");
3723   AddFlag(VER_FLG_INFO, "INFO");
3724   AddFlag(~0, "<unknown>");
3725   return Ret;
3726 }
3727 
3728 template <class ELFT>
3729 void GNUStyle<ELFT>::printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
3730                                                    const Elf_Shdr *Sec) {
3731   if (!Sec)
3732     return;
3733 
3734   unsigned VerDefsNum = Sec->sh_info;
3735   printGNUVersionSectionProlog(OS, "Version definition", VerDefsNum, Obj, Sec,
3736                                this->FileName);
3737 
3738   const Elf_Shdr *StrTabSec =
3739       unwrapOrError(this->FileName, Obj->getSection(Sec->sh_link));
3740   StringRef StringTable(
3741       reinterpret_cast<const char *>(Obj->base() + StrTabSec->sh_offset),
3742       (size_t)StrTabSec->sh_size);
3743 
3744   const uint8_t *VerdefBuf =
3745       unwrapOrError(this->FileName, Obj->getSectionContents(Sec)).data();
3746   const uint8_t *Begin = VerdefBuf;
3747 
3748   while (VerDefsNum--) {
3749     const Elf_Verdef *Verdef = reinterpret_cast<const Elf_Verdef *>(VerdefBuf);
3750     OS << format("  0x%04x: Rev: %u  Flags: %s  Index: %u  Cnt: %u",
3751                  VerdefBuf - Begin, (unsigned)Verdef->vd_version,
3752                  versionFlagToString(Verdef->vd_flags).c_str(),
3753                  (unsigned)Verdef->vd_ndx, (unsigned)Verdef->vd_cnt);
3754 
3755     const uint8_t *VerdauxBuf = VerdefBuf + Verdef->vd_aux;
3756     const Elf_Verdaux *Verdaux =
3757         reinterpret_cast<const Elf_Verdaux *>(VerdauxBuf);
3758     OS << format("  Name: %s\n",
3759                  StringTable.drop_front(Verdaux->vda_name).data());
3760 
3761     for (unsigned I = 1; I < Verdef->vd_cnt; ++I) {
3762       VerdauxBuf += Verdaux->vda_next;
3763       Verdaux = reinterpret_cast<const Elf_Verdaux *>(VerdauxBuf);
3764       OS << format("  0x%04x: Parent %u: %s\n", VerdauxBuf - Begin, I,
3765                    StringTable.drop_front(Verdaux->vda_name).data());
3766     }
3767 
3768     VerdefBuf += Verdef->vd_next;
3769   }
3770   OS << '\n';
3771 }
3772 
3773 template <class ELFT>
3774 void GNUStyle<ELFT>::printVersionDependencySection(const ELFFile<ELFT> *Obj,
3775                                                    const Elf_Shdr *Sec) {
3776   if (!Sec)
3777     return;
3778 
3779   unsigned VerneedNum = Sec->sh_info;
3780   printGNUVersionSectionProlog(OS, "Version needs", VerneedNum, Obj, Sec,
3781                                this->FileName);
3782 
3783   ArrayRef<uint8_t> SecData =
3784       unwrapOrError(this->FileName, Obj->getSectionContents(Sec));
3785 
3786   const Elf_Shdr *StrTabSec =
3787       unwrapOrError(this->FileName, Obj->getSection(Sec->sh_link));
3788   StringRef StringTable = {
3789       reinterpret_cast<const char *>(Obj->base() + StrTabSec->sh_offset),
3790       (size_t)StrTabSec->sh_size};
3791 
3792   const uint8_t *VerneedBuf = SecData.data();
3793   for (unsigned I = 0; I < VerneedNum; ++I) {
3794     const Elf_Verneed *Verneed =
3795         reinterpret_cast<const Elf_Verneed *>(VerneedBuf);
3796 
3797     OS << format("  0x%04x: Version: %u  File: %s  Cnt: %u\n",
3798                  reinterpret_cast<const uint8_t *>(Verneed) - SecData.begin(),
3799                  (unsigned)Verneed->vn_version,
3800                  StringTable.drop_front(Verneed->vn_file).data(),
3801                  (unsigned)Verneed->vn_cnt);
3802 
3803     const uint8_t *VernauxBuf = VerneedBuf + Verneed->vn_aux;
3804     for (unsigned J = 0; J < Verneed->vn_cnt; ++J) {
3805       const Elf_Vernaux *Vernaux =
3806           reinterpret_cast<const Elf_Vernaux *>(VernauxBuf);
3807 
3808       OS << format("  0x%04x:   Name: %s  Flags: %s  Version: %u\n",
3809                    reinterpret_cast<const uint8_t *>(Vernaux) - SecData.begin(),
3810                    StringTable.drop_front(Vernaux->vna_name).data(),
3811                    versionFlagToString(Vernaux->vna_flags).c_str(),
3812                    (unsigned)Vernaux->vna_other);
3813       VernauxBuf += Vernaux->vna_next;
3814     }
3815     VerneedBuf += Verneed->vn_next;
3816   }
3817   OS << '\n';
3818 }
3819 
3820 // Hash histogram shows  statistics of how efficient the hash was for the
3821 // dynamic symbol table. The table shows number of hash buckets for different
3822 // lengths of chains as absolute number and percentage of the total buckets.
3823 // Additionally cumulative coverage of symbols for each set of buckets.
3824 template <class ELFT>
3825 void GNUStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) {
3826   // Print histogram for .hash section
3827   if (const Elf_Hash *HashTable = this->dumper()->getHashTable()) {
3828     size_t NBucket = HashTable->nbucket;
3829     size_t NChain = HashTable->nchain;
3830     ArrayRef<Elf_Word> Buckets = HashTable->buckets();
3831     ArrayRef<Elf_Word> Chains = HashTable->chains();
3832     size_t TotalSyms = 0;
3833     // If hash table is correct, we have at least chains with 0 length
3834     size_t MaxChain = 1;
3835     size_t CumulativeNonZero = 0;
3836 
3837     if (NChain == 0 || NBucket == 0)
3838       return;
3839 
3840     std::vector<size_t> ChainLen(NBucket, 0);
3841     // Go over all buckets and and note chain lengths of each bucket (total
3842     // unique chain lengths).
3843     for (size_t B = 0; B < NBucket; B++) {
3844       for (size_t C = Buckets[B]; C > 0 && C < NChain; C = Chains[C])
3845         if (MaxChain <= ++ChainLen[B])
3846           MaxChain++;
3847       TotalSyms += ChainLen[B];
3848     }
3849 
3850     if (!TotalSyms)
3851       return;
3852 
3853     std::vector<size_t> Count(MaxChain, 0) ;
3854     // Count how long is the chain for each bucket
3855     for (size_t B = 0; B < NBucket; B++)
3856       ++Count[ChainLen[B]];
3857     // Print Number of buckets with each chain lengths and their cumulative
3858     // coverage of the symbols
3859     OS << "Histogram for bucket list length (total of " << NBucket
3860        << " buckets)\n"
3861        << " Length  Number     % of total  Coverage\n";
3862     for (size_t I = 0; I < MaxChain; I++) {
3863       CumulativeNonZero += Count[I] * I;
3864       OS << format("%7lu  %-10lu (%5.1f%%)     %5.1f%%\n", I, Count[I],
3865                    (Count[I] * 100.0) / NBucket,
3866                    (CumulativeNonZero * 100.0) / TotalSyms);
3867     }
3868   }
3869 
3870   // Print histogram for .gnu.hash section
3871   if (const Elf_GnuHash *GnuHashTable = this->dumper()->getGnuHashTable()) {
3872     size_t NBucket = GnuHashTable->nbuckets;
3873     ArrayRef<Elf_Word> Buckets = GnuHashTable->buckets();
3874     unsigned NumSyms = this->dumper()->dynamic_symbols().size();
3875     if (!NumSyms)
3876       return;
3877     ArrayRef<Elf_Word> Chains = GnuHashTable->values(NumSyms);
3878     size_t Symndx = GnuHashTable->symndx;
3879     size_t TotalSyms = 0;
3880     size_t MaxChain = 1;
3881     size_t CumulativeNonZero = 0;
3882 
3883     if (Chains.empty() || NBucket == 0)
3884       return;
3885 
3886     std::vector<size_t> ChainLen(NBucket, 0);
3887 
3888     for (size_t B = 0; B < NBucket; B++) {
3889       if (!Buckets[B])
3890         continue;
3891       size_t Len = 1;
3892       for (size_t C = Buckets[B] - Symndx;
3893            C < Chains.size() && (Chains[C] & 1) == 0; C++)
3894         if (MaxChain < ++Len)
3895           MaxChain++;
3896       ChainLen[B] = Len;
3897       TotalSyms += Len;
3898     }
3899     MaxChain++;
3900 
3901     if (!TotalSyms)
3902       return;
3903 
3904     std::vector<size_t> Count(MaxChain, 0) ;
3905     for (size_t B = 0; B < NBucket; B++)
3906       ++Count[ChainLen[B]];
3907     // Print Number of buckets with each chain lengths and their cumulative
3908     // coverage of the symbols
3909     OS << "Histogram for `.gnu.hash' bucket list length (total of " << NBucket
3910        << " buckets)\n"
3911        << " Length  Number     % of total  Coverage\n";
3912     for (size_t I = 0; I <MaxChain; I++) {
3913       CumulativeNonZero += Count[I] * I;
3914       OS << format("%7lu  %-10lu (%5.1f%%)     %5.1f%%\n", I, Count[I],
3915                    (Count[I] * 100.0) / NBucket,
3916                    (CumulativeNonZero * 100.0) / TotalSyms);
3917     }
3918   }
3919 }
3920 
3921 template <class ELFT>
3922 void GNUStyle<ELFT>::printCGProfile(const ELFFile<ELFT> *Obj) {
3923   OS << "GNUStyle::printCGProfile not implemented\n";
3924 }
3925 
3926 template <class ELFT>
3927 void GNUStyle<ELFT>::printAddrsig(const ELFFile<ELFT> *Obj) {
3928     OS << "GNUStyle::printAddrsig not implemented\n";
3929 }
3930 
3931 static StringRef getGenericNoteTypeName(const uint32_t NT) {
3932   static const struct {
3933     uint32_t ID;
3934     const char *Name;
3935   } Notes[] = {
3936       {ELF::NT_VERSION, "NT_VERSION (version)"},
3937       {ELF::NT_ARCH, "NT_ARCH (architecture)"},
3938       {ELF::NT_GNU_BUILD_ATTRIBUTE_OPEN, "OPEN"},
3939       {ELF::NT_GNU_BUILD_ATTRIBUTE_FUNC, "func"},
3940   };
3941 
3942   for (const auto &Note : Notes)
3943     if (Note.ID == NT)
3944       return Note.Name;
3945 
3946   return "";
3947 }
3948 
3949 static StringRef getCoreNoteTypeName(const uint32_t NT) {
3950   static const struct {
3951     uint32_t ID;
3952     const char *Name;
3953   } Notes[] = {
3954       {ELF::NT_PRSTATUS, "NT_PRSTATUS (prstatus structure)"},
3955       {ELF::NT_FPREGSET, "NT_FPREGSET (floating point registers)"},
3956       {ELF::NT_PRPSINFO, "NT_PRPSINFO (prpsinfo structure)"},
3957       {ELF::NT_TASKSTRUCT, "NT_TASKSTRUCT (task structure)"},
3958       {ELF::NT_AUXV, "NT_AUXV (auxiliary vector)"},
3959       {ELF::NT_PSTATUS, "NT_PSTATUS (pstatus structure)"},
3960       {ELF::NT_FPREGS, "NT_FPREGS (floating point registers)"},
3961       {ELF::NT_PSINFO, "NT_PSINFO (psinfo structure)"},
3962       {ELF::NT_LWPSTATUS, "NT_LWPSTATUS (lwpstatus_t structure)"},
3963       {ELF::NT_LWPSINFO, "NT_LWPSINFO (lwpsinfo_t structure)"},
3964       {ELF::NT_WIN32PSTATUS, "NT_WIN32PSTATUS (win32_pstatus structure)"},
3965 
3966       {ELF::NT_PPC_VMX, "NT_PPC_VMX (ppc Altivec registers)"},
3967       {ELF::NT_PPC_VSX, "NT_PPC_VSX (ppc VSX registers)"},
3968       {ELF::NT_PPC_TAR, "NT_PPC_TAR (ppc TAR register)"},
3969       {ELF::NT_PPC_PPR, "NT_PPC_PPR (ppc PPR register)"},
3970       {ELF::NT_PPC_DSCR, "NT_PPC_DSCR (ppc DSCR register)"},
3971       {ELF::NT_PPC_EBB, "NT_PPC_EBB (ppc EBB registers)"},
3972       {ELF::NT_PPC_PMU, "NT_PPC_PMU (ppc PMU registers)"},
3973       {ELF::NT_PPC_TM_CGPR, "NT_PPC_TM_CGPR (ppc checkpointed GPR registers)"},
3974       {ELF::NT_PPC_TM_CFPR,
3975        "NT_PPC_TM_CFPR (ppc checkpointed floating point registers)"},
3976       {ELF::NT_PPC_TM_CVMX,
3977        "NT_PPC_TM_CVMX (ppc checkpointed Altivec registers)"},
3978       {ELF::NT_PPC_TM_CVSX, "NT_PPC_TM_CVSX (ppc checkpointed VSX registers)"},
3979       {ELF::NT_PPC_TM_SPR, "NT_PPC_TM_SPR (ppc TM special purpose registers)"},
3980       {ELF::NT_PPC_TM_CTAR, "NT_PPC_TM_CTAR (ppc checkpointed TAR register)"},
3981       {ELF::NT_PPC_TM_CPPR, "NT_PPC_TM_CPPR (ppc checkpointed PPR register)"},
3982       {ELF::NT_PPC_TM_CDSCR,
3983        "NT_PPC_TM_CDSCR (ppc checkpointed DSCR register)"},
3984 
3985       {ELF::NT_386_TLS, "NT_386_TLS (x86 TLS information)"},
3986       {ELF::NT_386_IOPERM, "NT_386_IOPERM (x86 I/O permissions)"},
3987       {ELF::NT_X86_XSTATE, "NT_X86_XSTATE (x86 XSAVE extended state)"},
3988 
3989       {ELF::NT_S390_HIGH_GPRS,
3990        "NT_S390_HIGH_GPRS (s390 upper register halves)"},
3991       {ELF::NT_S390_TIMER, "NT_S390_TIMER (s390 timer register)"},
3992       {ELF::NT_S390_TODCMP, "NT_S390_TODCMP (s390 TOD comparator register)"},
3993       {ELF::NT_S390_TODPREG,
3994        "NT_S390_TODPREG (s390 TOD programmable register)"},
3995       {ELF::NT_S390_CTRS, "NT_S390_CTRS (s390 control registers)"},
3996       {ELF::NT_S390_PREFIX, "NT_S390_PREFIX (s390 prefix register)"},
3997       {ELF::NT_S390_LAST_BREAK,
3998        "NT_S390_LAST_BREAK (s390 last breaking event address)"},
3999       {ELF::NT_S390_SYSTEM_CALL,
4000        "NT_S390_SYSTEM_CALL (s390 system call restart data)"},
4001       {ELF::NT_S390_TDB, "NT_S390_TDB (s390 transaction diagnostic block)"},
4002       {ELF::NT_S390_VXRS_LOW,
4003        "NT_S390_VXRS_LOW (s390 vector registers 0-15 upper half)"},
4004       {ELF::NT_S390_VXRS_HIGH,
4005        "NT_S390_VXRS_HIGH (s390 vector registers 16-31)"},
4006       {ELF::NT_S390_GS_CB, "NT_S390_GS_CB (s390 guarded-storage registers)"},
4007       {ELF::NT_S390_GS_BC,
4008        "NT_S390_GS_BC (s390 guarded-storage broadcast control)"},
4009 
4010       {ELF::NT_ARM_VFP, "NT_ARM_VFP (arm VFP registers)"},
4011       {ELF::NT_ARM_TLS, "NT_ARM_TLS (AArch TLS registers)"},
4012       {ELF::NT_ARM_HW_BREAK,
4013        "NT_ARM_HW_BREAK (AArch hardware breakpoint registers)"},
4014       {ELF::NT_ARM_HW_WATCH,
4015        "NT_ARM_HW_WATCH (AArch hardware watchpoint registers)"},
4016 
4017       {ELF::NT_FILE, "NT_FILE (mapped files)"},
4018       {ELF::NT_PRXFPREG, "NT_PRXFPREG (user_xfpregs structure)"},
4019       {ELF::NT_SIGINFO, "NT_SIGINFO (siginfo_t data)"},
4020   };
4021 
4022   for (const auto &Note : Notes)
4023     if (Note.ID == NT)
4024       return Note.Name;
4025 
4026   return "";
4027 }
4028 
4029 static std::string getGNUNoteTypeName(const uint32_t NT) {
4030   static const struct {
4031     uint32_t ID;
4032     const char *Name;
4033   } Notes[] = {
4034       {ELF::NT_GNU_ABI_TAG, "NT_GNU_ABI_TAG (ABI version tag)"},
4035       {ELF::NT_GNU_HWCAP, "NT_GNU_HWCAP (DSO-supplied software HWCAP info)"},
4036       {ELF::NT_GNU_BUILD_ID, "NT_GNU_BUILD_ID (unique build ID bitstring)"},
4037       {ELF::NT_GNU_GOLD_VERSION, "NT_GNU_GOLD_VERSION (gold version)"},
4038       {ELF::NT_GNU_PROPERTY_TYPE_0, "NT_GNU_PROPERTY_TYPE_0 (property note)"},
4039   };
4040 
4041   for (const auto &Note : Notes)
4042     if (Note.ID == NT)
4043       return std::string(Note.Name);
4044 
4045   std::string string;
4046   raw_string_ostream OS(string);
4047   OS << format("Unknown note type (0x%08x)", NT);
4048   return OS.str();
4049 }
4050 
4051 static std::string getFreeBSDNoteTypeName(const uint32_t NT) {
4052   static const struct {
4053     uint32_t ID;
4054     const char *Name;
4055   } Notes[] = {
4056       {ELF::NT_FREEBSD_THRMISC, "NT_THRMISC (thrmisc structure)"},
4057       {ELF::NT_FREEBSD_PROCSTAT_PROC, "NT_PROCSTAT_PROC (proc data)"},
4058       {ELF::NT_FREEBSD_PROCSTAT_FILES, "NT_PROCSTAT_FILES (files data)"},
4059       {ELF::NT_FREEBSD_PROCSTAT_VMMAP, "NT_PROCSTAT_VMMAP (vmmap data)"},
4060       {ELF::NT_FREEBSD_PROCSTAT_GROUPS, "NT_PROCSTAT_GROUPS (groups data)"},
4061       {ELF::NT_FREEBSD_PROCSTAT_UMASK, "NT_PROCSTAT_UMASK (umask data)"},
4062       {ELF::NT_FREEBSD_PROCSTAT_RLIMIT, "NT_PROCSTAT_RLIMIT (rlimit data)"},
4063       {ELF::NT_FREEBSD_PROCSTAT_OSREL, "NT_PROCSTAT_OSREL (osreldate data)"},
4064       {ELF::NT_FREEBSD_PROCSTAT_PSSTRINGS,
4065        "NT_PROCSTAT_PSSTRINGS (ps_strings data)"},
4066       {ELF::NT_FREEBSD_PROCSTAT_AUXV, "NT_PROCSTAT_AUXV (auxv data)"},
4067   };
4068 
4069   for (const auto &Note : Notes)
4070     if (Note.ID == NT)
4071       return std::string(Note.Name);
4072 
4073   std::string string;
4074   raw_string_ostream OS(string);
4075   OS << format("Unknown note type (0x%08x)", NT);
4076   return OS.str();
4077 }
4078 
4079 static std::string getAMDNoteTypeName(const uint32_t NT) {
4080   static const struct {
4081     uint32_t ID;
4082     const char *Name;
4083   } Notes[] = {{ELF::NT_AMD_AMDGPU_HSA_METADATA,
4084                 "NT_AMD_AMDGPU_HSA_METADATA (HSA Metadata)"},
4085                {ELF::NT_AMD_AMDGPU_ISA, "NT_AMD_AMDGPU_ISA (ISA Version)"},
4086                {ELF::NT_AMD_AMDGPU_PAL_METADATA,
4087                 "NT_AMD_AMDGPU_PAL_METADATA (PAL Metadata)"}};
4088 
4089   for (const auto &Note : Notes)
4090     if (Note.ID == NT)
4091       return std::string(Note.Name);
4092 
4093   std::string string;
4094   raw_string_ostream OS(string);
4095   OS << format("Unknown note type (0x%08x)", NT);
4096   return OS.str();
4097 }
4098 
4099 static std::string getAMDGPUNoteTypeName(const uint32_t NT) {
4100   if (NT == ELF::NT_AMDGPU_METADATA)
4101     return std::string("NT_AMDGPU_METADATA (AMDGPU Metadata)");
4102 
4103   std::string string;
4104   raw_string_ostream OS(string);
4105   OS << format("Unknown note type (0x%08x)", NT);
4106   return OS.str();
4107 }
4108 
4109 template <typename ELFT>
4110 static std::string getGNUProperty(uint32_t Type, uint32_t DataSize,
4111                                   ArrayRef<uint8_t> Data) {
4112   std::string str;
4113   raw_string_ostream OS(str);
4114   uint32_t PrData;
4115   auto DumpBit = [&](uint32_t Flag, StringRef Name) {
4116     if (PrData & Flag) {
4117       PrData &= ~Flag;
4118       OS << Name;
4119       if (PrData)
4120         OS << ", ";
4121     }
4122   };
4123 
4124   switch (Type) {
4125   default:
4126     OS << format("<application-specific type 0x%x>", Type);
4127     return OS.str();
4128   case GNU_PROPERTY_STACK_SIZE: {
4129     OS << "stack size: ";
4130     if (DataSize == sizeof(typename ELFT::uint))
4131       OS << formatv("{0:x}",
4132                     (uint64_t)(*(const typename ELFT::Addr *)Data.data()));
4133     else
4134       OS << format("<corrupt length: 0x%x>", DataSize);
4135     return OS.str();
4136   }
4137   case GNU_PROPERTY_NO_COPY_ON_PROTECTED:
4138     OS << "no copy on protected";
4139     if (DataSize)
4140       OS << format(" <corrupt length: 0x%x>", DataSize);
4141     return OS.str();
4142   case GNU_PROPERTY_AARCH64_FEATURE_1_AND:
4143   case GNU_PROPERTY_X86_FEATURE_1_AND:
4144     OS << ((Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) ? "aarch64 feature: "
4145                                                         : "x86 feature: ");
4146     if (DataSize != 4) {
4147       OS << format("<corrupt length: 0x%x>", DataSize);
4148       return OS.str();
4149     }
4150     PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data());
4151     if (PrData == 0) {
4152       OS << "<None>";
4153       return OS.str();
4154     }
4155     if (Type == GNU_PROPERTY_AARCH64_FEATURE_1_AND) {
4156       DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_BTI, "BTI");
4157       DumpBit(GNU_PROPERTY_AARCH64_FEATURE_1_PAC, "PAC");
4158     } else {
4159       DumpBit(GNU_PROPERTY_X86_FEATURE_1_IBT, "IBT");
4160       DumpBit(GNU_PROPERTY_X86_FEATURE_1_SHSTK, "SHSTK");
4161     }
4162     if (PrData)
4163       OS << format("<unknown flags: 0x%x>", PrData);
4164     return OS.str();
4165   case GNU_PROPERTY_X86_ISA_1_NEEDED:
4166   case GNU_PROPERTY_X86_ISA_1_USED:
4167     OS << "x86 ISA "
4168        << (Type == GNU_PROPERTY_X86_ISA_1_NEEDED ? "needed: " : "used: ");
4169     if (DataSize != 4) {
4170       OS << format("<corrupt length: 0x%x>", DataSize);
4171       return OS.str();
4172     }
4173     PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data());
4174     if (PrData == 0) {
4175       OS << "<None>";
4176       return OS.str();
4177     }
4178     DumpBit(GNU_PROPERTY_X86_ISA_1_CMOV, "CMOV");
4179     DumpBit(GNU_PROPERTY_X86_ISA_1_SSE, "SSE");
4180     DumpBit(GNU_PROPERTY_X86_ISA_1_SSE2, "SSE2");
4181     DumpBit(GNU_PROPERTY_X86_ISA_1_SSE3, "SSE3");
4182     DumpBit(GNU_PROPERTY_X86_ISA_1_SSSE3, "SSSE3");
4183     DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_1, "SSE4_1");
4184     DumpBit(GNU_PROPERTY_X86_ISA_1_SSE4_2, "SSE4_2");
4185     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX, "AVX");
4186     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX2, "AVX2");
4187     DumpBit(GNU_PROPERTY_X86_ISA_1_FMA, "FMA");
4188     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512F, "AVX512F");
4189     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512CD, "AVX512CD");
4190     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512ER, "AVX512ER");
4191     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512PF, "AVX512PF");
4192     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512VL, "AVX512VL");
4193     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512DQ, "AVX512DQ");
4194     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512BW, "AVX512BW");
4195     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4FMAPS, "AVX512_4FMAPS");
4196     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_4VNNIW, "AVX512_4VNNIW");
4197     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_BITALG, "AVX512_BITALG");
4198     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_IFMA, "AVX512_IFMA");
4199     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI, "AVX512_VBMI");
4200     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VBMI2, "AVX512_VBMI2");
4201     DumpBit(GNU_PROPERTY_X86_ISA_1_AVX512_VNNI, "AVX512_VNNI");
4202     if (PrData)
4203       OS << format("<unknown flags: 0x%x>", PrData);
4204     return OS.str();
4205     break;
4206   case GNU_PROPERTY_X86_FEATURE_2_NEEDED:
4207   case GNU_PROPERTY_X86_FEATURE_2_USED:
4208     OS << "x86 feature "
4209        << (Type == GNU_PROPERTY_X86_FEATURE_2_NEEDED ? "needed: " : "used: ");
4210     if (DataSize != 4) {
4211       OS << format("<corrupt length: 0x%x>", DataSize);
4212       return OS.str();
4213     }
4214     PrData = support::endian::read32<ELFT::TargetEndianness>(Data.data());
4215     if (PrData == 0) {
4216       OS << "<None>";
4217       return OS.str();
4218     }
4219     DumpBit(GNU_PROPERTY_X86_FEATURE_2_X86, "x86");
4220     DumpBit(GNU_PROPERTY_X86_FEATURE_2_X87, "x87");
4221     DumpBit(GNU_PROPERTY_X86_FEATURE_2_MMX, "MMX");
4222     DumpBit(GNU_PROPERTY_X86_FEATURE_2_XMM, "XMM");
4223     DumpBit(GNU_PROPERTY_X86_FEATURE_2_YMM, "YMM");
4224     DumpBit(GNU_PROPERTY_X86_FEATURE_2_ZMM, "ZMM");
4225     DumpBit(GNU_PROPERTY_X86_FEATURE_2_FXSR, "FXSR");
4226     DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVE, "XSAVE");
4227     DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEOPT, "XSAVEOPT");
4228     DumpBit(GNU_PROPERTY_X86_FEATURE_2_XSAVEC, "XSAVEC");
4229     if (PrData)
4230       OS << format("<unknown flags: 0x%x>", PrData);
4231     return OS.str();
4232   }
4233 }
4234 
4235 template <typename ELFT>
4236 static SmallVector<std::string, 4> getGNUPropertyList(ArrayRef<uint8_t> Arr) {
4237   using Elf_Word = typename ELFT::Word;
4238 
4239   SmallVector<std::string, 4> Properties;
4240   while (Arr.size() >= 8) {
4241     uint32_t Type = *reinterpret_cast<const Elf_Word *>(Arr.data());
4242     uint32_t DataSize = *reinterpret_cast<const Elf_Word *>(Arr.data() + 4);
4243     Arr = Arr.drop_front(8);
4244 
4245     // Take padding size into account if present.
4246     uint64_t PaddedSize = alignTo(DataSize, sizeof(typename ELFT::uint));
4247     std::string str;
4248     raw_string_ostream OS(str);
4249     if (Arr.size() < PaddedSize) {
4250       OS << format("<corrupt type (0x%x) datasz: 0x%x>", Type, DataSize);
4251       Properties.push_back(OS.str());
4252       break;
4253     }
4254     Properties.push_back(
4255         getGNUProperty<ELFT>(Type, DataSize, Arr.take_front(PaddedSize)));
4256     Arr = Arr.drop_front(PaddedSize);
4257   }
4258 
4259   if (!Arr.empty())
4260     Properties.push_back("<corrupted GNU_PROPERTY_TYPE_0>");
4261 
4262   return Properties;
4263 }
4264 
4265 struct GNUAbiTag {
4266   std::string OSName;
4267   std::string ABI;
4268   bool IsValid;
4269 };
4270 
4271 template <typename ELFT> static GNUAbiTag getGNUAbiTag(ArrayRef<uint8_t> Desc) {
4272   typedef typename ELFT::Word Elf_Word;
4273 
4274   ArrayRef<Elf_Word> Words(reinterpret_cast<const Elf_Word *>(Desc.begin()),
4275                            reinterpret_cast<const Elf_Word *>(Desc.end()));
4276 
4277   if (Words.size() < 4)
4278     return {"", "", /*IsValid=*/false};
4279 
4280   static const char *OSNames[] = {
4281       "Linux", "Hurd", "Solaris", "FreeBSD", "NetBSD", "Syllable", "NaCl",
4282   };
4283   StringRef OSName = "Unknown";
4284   if (Words[0] < array_lengthof(OSNames))
4285     OSName = OSNames[Words[0]];
4286   uint32_t Major = Words[1], Minor = Words[2], Patch = Words[3];
4287   std::string str;
4288   raw_string_ostream ABI(str);
4289   ABI << Major << "." << Minor << "." << Patch;
4290   return {OSName, ABI.str(), /*IsValid=*/true};
4291 }
4292 
4293 static std::string getGNUBuildId(ArrayRef<uint8_t> Desc) {
4294   std::string str;
4295   raw_string_ostream OS(str);
4296   for (const auto &B : Desc)
4297     OS << format_hex_no_prefix(B, 2);
4298   return OS.str();
4299 }
4300 
4301 static StringRef getGNUGoldVersion(ArrayRef<uint8_t> Desc) {
4302   return StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size());
4303 }
4304 
4305 template <typename ELFT>
4306 static void printGNUNote(raw_ostream &OS, uint32_t NoteType,
4307                          ArrayRef<uint8_t> Desc) {
4308   switch (NoteType) {
4309   default:
4310     return;
4311   case ELF::NT_GNU_ABI_TAG: {
4312     const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc);
4313     if (!AbiTag.IsValid)
4314       OS << "    <corrupt GNU_ABI_TAG>";
4315     else
4316       OS << "    OS: " << AbiTag.OSName << ", ABI: " << AbiTag.ABI;
4317     break;
4318   }
4319   case ELF::NT_GNU_BUILD_ID: {
4320     OS << "    Build ID: " << getGNUBuildId(Desc);
4321     break;
4322   }
4323   case ELF::NT_GNU_GOLD_VERSION:
4324     OS << "    Version: " << getGNUGoldVersion(Desc);
4325     break;
4326   case ELF::NT_GNU_PROPERTY_TYPE_0:
4327     OS << "    Properties:";
4328     for (const auto &Property : getGNUPropertyList<ELFT>(Desc))
4329       OS << "    " << Property << "\n";
4330     break;
4331   }
4332   OS << '\n';
4333 }
4334 
4335 struct AMDNote {
4336   std::string Type;
4337   std::string Value;
4338 };
4339 
4340 template <typename ELFT>
4341 static AMDNote getAMDNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) {
4342   switch (NoteType) {
4343   default:
4344     return {"", ""};
4345   case ELF::NT_AMD_AMDGPU_HSA_METADATA:
4346     return {
4347         "HSA Metadata",
4348         std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())};
4349   case ELF::NT_AMD_AMDGPU_ISA:
4350     return {
4351         "ISA Version",
4352         std::string(reinterpret_cast<const char *>(Desc.data()), Desc.size())};
4353   }
4354 }
4355 
4356 struct AMDGPUNote {
4357   std::string Type;
4358   std::string Value;
4359 };
4360 
4361 template <typename ELFT>
4362 static AMDGPUNote getAMDGPUNote(uint32_t NoteType, ArrayRef<uint8_t> Desc) {
4363   switch (NoteType) {
4364   default:
4365     return {"", ""};
4366   case ELF::NT_AMDGPU_METADATA: {
4367     auto MsgPackString =
4368         StringRef(reinterpret_cast<const char *>(Desc.data()), Desc.size());
4369     msgpack::Document MsgPackDoc;
4370     if (!MsgPackDoc.readFromBlob(MsgPackString, /*Multi=*/false))
4371       return {"AMDGPU Metadata", "Invalid AMDGPU Metadata"};
4372 
4373     AMDGPU::HSAMD::V3::MetadataVerifier Verifier(true);
4374     if (!Verifier.verify(MsgPackDoc.getRoot()))
4375       return {"AMDGPU Metadata", "Invalid AMDGPU Metadata"};
4376 
4377     std::string HSAMetadataString;
4378     raw_string_ostream StrOS(HSAMetadataString);
4379     MsgPackDoc.toYAML(StrOS);
4380 
4381     return {"AMDGPU Metadata", StrOS.str()};
4382   }
4383   }
4384 }
4385 
4386 struct CoreFileMapping {
4387   uint64_t Start, End, Offset;
4388   StringRef Filename;
4389 };
4390 
4391 struct CoreNote {
4392   uint64_t PageSize;
4393   std::vector<CoreFileMapping> Mappings;
4394 };
4395 
4396 static Expected<CoreNote> readCoreNote(DataExtractor Desc) {
4397   // Expected format of the NT_FILE note description:
4398   // 1. # of file mappings (call it N)
4399   // 2. Page size
4400   // 3. N (start, end, offset) triples
4401   // 4. N packed filenames (null delimited)
4402   // Each field is an Elf_Addr, except for filenames which are char* strings.
4403 
4404   CoreNote Ret;
4405   const int Bytes = Desc.getAddressSize();
4406 
4407   if (!Desc.isValidOffsetForAddress(2))
4408     return createStringError(object_error::parse_failed,
4409                              "malformed note: header too short");
4410   if (Desc.getData().back() != 0)
4411     return createStringError(object_error::parse_failed,
4412                              "malformed note: not NUL terminated");
4413 
4414   uint64_t DescOffset = 0;
4415   uint64_t FileCount = Desc.getAddress(&DescOffset);
4416   Ret.PageSize = Desc.getAddress(&DescOffset);
4417 
4418   if (!Desc.isValidOffsetForAddress(3 * FileCount * Bytes))
4419     return createStringError(object_error::parse_failed,
4420                              "malformed note: too short for number of files");
4421 
4422   uint64_t FilenamesOffset = 0;
4423   DataExtractor Filenames(
4424       Desc.getData().drop_front(DescOffset + 3 * FileCount * Bytes),
4425       Desc.isLittleEndian(), Desc.getAddressSize());
4426 
4427   Ret.Mappings.resize(FileCount);
4428   for (CoreFileMapping &Mapping : Ret.Mappings) {
4429     if (!Filenames.isValidOffsetForDataOfSize(FilenamesOffset, 1))
4430       return createStringError(object_error::parse_failed,
4431                                "malformed note: too few filenames");
4432     Mapping.Start = Desc.getAddress(&DescOffset);
4433     Mapping.End = Desc.getAddress(&DescOffset);
4434     Mapping.Offset = Desc.getAddress(&DescOffset);
4435     Mapping.Filename = Filenames.getCStrRef(&FilenamesOffset);
4436   }
4437 
4438   return Ret;
4439 }
4440 
4441 template <typename ELFT>
4442 static void printCoreNote(raw_ostream &OS, const CoreNote &Note) {
4443   // Length of "0x<address>" string.
4444   const int FieldWidth = ELFT::Is64Bits ? 18 : 10;
4445 
4446   OS << "    Page size: " << format_decimal(Note.PageSize, 0) << '\n';
4447   OS << "    " << right_justify("Start", FieldWidth) << "  "
4448      << right_justify("End", FieldWidth) << "  "
4449      << right_justify("Page Offset", FieldWidth) << '\n';
4450   for (const CoreFileMapping &Mapping : Note.Mappings) {
4451     OS << "    " << format_hex(Mapping.Start, FieldWidth) << "  "
4452        << format_hex(Mapping.End, FieldWidth) << "  "
4453        << format_hex(Mapping.Offset, FieldWidth) << "\n        "
4454        << Mapping.Filename << '\n';
4455   }
4456 }
4457 
4458 template <class ELFT>
4459 void GNUStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) {
4460   auto PrintHeader = [&](const typename ELFT::Off Offset,
4461                          const typename ELFT::Addr Size) {
4462     OS << "Displaying notes found at file offset " << format_hex(Offset, 10)
4463        << " with length " << format_hex(Size, 10) << ":\n"
4464        << "  Owner                Data size \tDescription\n";
4465   };
4466 
4467   auto ProcessNote = [&](const Elf_Note &Note) {
4468     StringRef Name = Note.getName();
4469     ArrayRef<uint8_t> Descriptor = Note.getDesc();
4470     Elf_Word Type = Note.getType();
4471 
4472     // Print the note owner/type.
4473     OS << "  " << left_justify(Name, 20) << ' '
4474        << format_hex(Descriptor.size(), 10) << '\t';
4475     if (Name == "GNU") {
4476       OS << getGNUNoteTypeName(Type) << '\n';
4477     } else if (Name == "FreeBSD") {
4478       OS << getFreeBSDNoteTypeName(Type) << '\n';
4479     } else if (Name == "AMD") {
4480       OS << getAMDNoteTypeName(Type) << '\n';
4481     } else if (Name == "AMDGPU") {
4482       OS << getAMDGPUNoteTypeName(Type) << '\n';
4483     } else {
4484       StringRef NoteType = Obj->getHeader()->e_type == ELF::ET_CORE
4485                                ? getCoreNoteTypeName(Type)
4486                                : getGenericNoteTypeName(Type);
4487       if (!NoteType.empty())
4488         OS << NoteType << '\n';
4489       else
4490         OS << "Unknown note type: (" << format_hex(Type, 10) << ")\n";
4491     }
4492 
4493     // Print the description, or fallback to printing raw bytes for unknown
4494     // owners.
4495     if (Name == "GNU") {
4496       printGNUNote<ELFT>(OS, Type, Descriptor);
4497     } else if (Name == "AMD") {
4498       const AMDNote N = getAMDNote<ELFT>(Type, Descriptor);
4499       if (!N.Type.empty())
4500         OS << "    " << N.Type << ":\n        " << N.Value << '\n';
4501     } else if (Name == "AMDGPU") {
4502       const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor);
4503       if (!N.Type.empty())
4504         OS << "    " << N.Type << ":\n        " << N.Value << '\n';
4505     } else if (Name == "CORE") {
4506       if (Type == ELF::NT_FILE) {
4507         DataExtractor DescExtractor(
4508             StringRef(reinterpret_cast<const char *>(Descriptor.data()),
4509                       Descriptor.size()),
4510             ELFT::TargetEndianness == support::little, sizeof(Elf_Addr));
4511         Expected<CoreNote> Note = readCoreNote(DescExtractor);
4512         if (Note)
4513           printCoreNote<ELFT>(OS, *Note);
4514         else
4515           reportWarning(Note.takeError(), this->FileName);
4516       }
4517     } else if (!Descriptor.empty()) {
4518       OS << "   description data:";
4519       for (uint8_t B : Descriptor)
4520         OS << " " << format("%02x", B);
4521       OS << '\n';
4522     }
4523   };
4524 
4525   ArrayRef<Elf_Shdr> Sections = unwrapOrError(this->FileName, Obj->sections());
4526   if (Obj->getHeader()->e_type != ELF::ET_CORE && !Sections.empty()) {
4527     for (const auto &S : Sections) {
4528       if (S.sh_type != SHT_NOTE)
4529         continue;
4530       PrintHeader(S.sh_offset, S.sh_size);
4531       Error Err = Error::success();
4532       for (const auto &Note : Obj->notes(S, Err))
4533         ProcessNote(Note);
4534       if (Err)
4535         reportError(std::move(Err), this->FileName);
4536     }
4537   } else {
4538     for (const auto &P :
4539          unwrapOrError(this->FileName, Obj->program_headers())) {
4540       if (P.p_type != PT_NOTE)
4541         continue;
4542       PrintHeader(P.p_offset, P.p_filesz);
4543       Error Err = Error::success();
4544       for (const auto &Note : Obj->notes(P, Err))
4545         ProcessNote(Note);
4546       if (Err)
4547         reportError(std::move(Err), this->FileName);
4548     }
4549   }
4550 }
4551 
4552 template <class ELFT>
4553 void GNUStyle<ELFT>::printELFLinkerOptions(const ELFFile<ELFT> *Obj) {
4554   OS << "printELFLinkerOptions not implemented!\n";
4555 }
4556 
4557 template <class ELFT>
4558 void DumpStyle<ELFT>::printFunctionStackSize(
4559     const ELFObjectFile<ELFT> *Obj, uint64_t SymValue, SectionRef FunctionSec,
4560     const StringRef SectionName, DataExtractor Data, uint64_t *Offset) {
4561   // This function ignores potentially erroneous input, unless it is directly
4562   // related to stack size reporting.
4563   SymbolRef FuncSym;
4564   for (const ELFSymbolRef &Symbol : Obj->symbols()) {
4565     Expected<uint64_t> SymAddrOrErr = Symbol.getAddress();
4566     if (!SymAddrOrErr) {
4567       consumeError(SymAddrOrErr.takeError());
4568       continue;
4569     }
4570     if (Symbol.getELFType() == ELF::STT_FUNC && *SymAddrOrErr == SymValue) {
4571       // Check if the symbol is in the right section.
4572       if (FunctionSec.containsSymbol(Symbol)) {
4573         FuncSym = Symbol;
4574         break;
4575       }
4576     }
4577   }
4578 
4579   std::string FuncName = "?";
4580   // A valid SymbolRef has a non-null object file pointer.
4581   if (FuncSym.BasicSymbolRef::getObject()) {
4582     // Extract the symbol name.
4583     Expected<StringRef> FuncNameOrErr = FuncSym.getName();
4584     if (FuncNameOrErr)
4585       FuncName = maybeDemangle(*FuncNameOrErr);
4586     else
4587       consumeError(FuncNameOrErr.takeError());
4588   } else {
4589     reportWarning(
4590         createError("could not identify function symbol for stack size entry"),
4591         Obj->getFileName());
4592   }
4593 
4594   // Extract the size. The expectation is that Offset is pointing to the right
4595   // place, i.e. past the function address.
4596   uint64_t PrevOffset = *Offset;
4597   uint64_t StackSize = Data.getULEB128(Offset);
4598   // getULEB128() does not advance Offset if it is not able to extract a valid
4599   // integer.
4600   if (*Offset == PrevOffset)
4601     reportError(
4602         createStringError(object_error::parse_failed,
4603                           "could not extract a valid stack size in section %s",
4604                           SectionName.data()),
4605         Obj->getFileName());
4606 
4607   printStackSizeEntry(StackSize, FuncName);
4608 }
4609 
4610 template <class ELFT>
4611 void GNUStyle<ELFT>::printStackSizeEntry(uint64_t Size, StringRef FuncName) {
4612   OS.PadToColumn(2);
4613   OS << format_decimal(Size, 11);
4614   OS.PadToColumn(18);
4615   OS << FuncName << "\n";
4616 }
4617 
4618 template <class ELFT>
4619 void DumpStyle<ELFT>::printStackSize(const ELFObjectFile<ELFT> *Obj,
4620                                      RelocationRef Reloc,
4621                                      SectionRef FunctionSec,
4622                                      const StringRef &StackSizeSectionName,
4623                                      const RelocationResolver &Resolver,
4624                                      DataExtractor Data) {
4625   // This function ignores potentially erroneous input, unless it is directly
4626   // related to stack size reporting.
4627   object::symbol_iterator RelocSym = Reloc.getSymbol();
4628   uint64_t RelocSymValue = 0;
4629   StringRef FileStr = Obj->getFileName();
4630   if (RelocSym != Obj->symbol_end()) {
4631     // Ensure that the relocation symbol is in the function section, i.e. the
4632     // section where the functions whose stack sizes we are reporting are
4633     // located.
4634     StringRef SymName = "?";
4635     Expected<StringRef> NameOrErr = RelocSym->getName();
4636     if (NameOrErr)
4637       SymName = *NameOrErr;
4638     else
4639       consumeError(NameOrErr.takeError());
4640 
4641     auto SectionOrErr = RelocSym->getSection();
4642     if (!SectionOrErr) {
4643       reportWarning(
4644           createError("cannot identify the section for relocation symbol " +
4645                       SymName),
4646           FileStr);
4647       consumeError(SectionOrErr.takeError());
4648     } else if (*SectionOrErr != FunctionSec) {
4649       reportWarning(createError("relocation symbol " + SymName +
4650                                 " is not in the expected section"),
4651                     FileStr);
4652       // Pretend that the symbol is in the correct section and report its
4653       // stack size anyway.
4654       FunctionSec = **SectionOrErr;
4655     }
4656 
4657     Expected<uint64_t> RelocSymValueOrErr = RelocSym->getValue();
4658     if (RelocSymValueOrErr)
4659       RelocSymValue = *RelocSymValueOrErr;
4660     else
4661       consumeError(RelocSymValueOrErr.takeError());
4662   }
4663 
4664   uint64_t Offset = Reloc.getOffset();
4665   if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1))
4666     reportError(
4667         createStringError(object_error::parse_failed,
4668                           "found invalid relocation offset into section %s "
4669                           "while trying to extract a stack size entry",
4670                           StackSizeSectionName.data()),
4671         FileStr);
4672 
4673   uint64_t Addend = Data.getAddress(&Offset);
4674   uint64_t SymValue = Resolver(Reloc, RelocSymValue, Addend);
4675   this->printFunctionStackSize(Obj, SymValue, FunctionSec, StackSizeSectionName,
4676                                Data, &Offset);
4677 }
4678 
4679 template <class ELFT>
4680 SectionRef toSectionRef(const ObjectFile *Obj, const typename ELFT::Shdr *Sec) {
4681   DataRefImpl DRI;
4682   DRI.p = reinterpret_cast<uintptr_t>(Sec);
4683   return SectionRef(DRI, Obj);
4684 }
4685 
4686 template <class ELFT>
4687 void DumpStyle<ELFT>::printNonRelocatableStackSizes(
4688     const ELFObjectFile<ELFT> *Obj, std::function<void()> PrintHeader) {
4689   // This function ignores potentially erroneous input, unless it is directly
4690   // related to stack size reporting.
4691   const ELFFile<ELFT> *EF = Obj->getELFFile();
4692   StringRef FileStr = Obj->getFileName();
4693   for (const SectionRef &Sec : Obj->sections()) {
4694     StringRef SectionName;
4695     if (Expected<StringRef> NameOrErr = Sec.getName())
4696       SectionName = *NameOrErr;
4697     else
4698       consumeError(NameOrErr.takeError());
4699 
4700     const Elf_Shdr *ElfSec = Obj->getSection(Sec.getRawDataRefImpl());
4701     if (!SectionName.startswith(".stack_sizes"))
4702       continue;
4703     PrintHeader();
4704     ArrayRef<uint8_t> Contents =
4705         unwrapOrError(this->FileName, EF->getSectionContents(ElfSec));
4706     DataExtractor Data(
4707         StringRef(reinterpret_cast<const char *>(Contents.data()),
4708                   Contents.size()),
4709         Obj->isLittleEndian(), sizeof(Elf_Addr));
4710     // A .stack_sizes section header's sh_link field is supposed to point
4711     // to the section that contains the functions whose stack sizes are
4712     // described in it.
4713     const Elf_Shdr *FunctionELFSec =
4714         unwrapOrError(this->FileName, EF->getSection(ElfSec->sh_link));
4715     uint64_t Offset = 0;
4716     while (Offset < Contents.size()) {
4717       // The function address is followed by a ULEB representing the stack
4718       // size. Check for an extra byte before we try to process the entry.
4719       if (!Data.isValidOffsetForDataOfSize(Offset, sizeof(Elf_Addr) + 1)) {
4720         reportError(
4721             createStringError(
4722                 object_error::parse_failed,
4723                 "section %s ended while trying to extract a stack size entry",
4724                 SectionName.data()),
4725             FileStr);
4726       }
4727       uint64_t SymValue = Data.getAddress(&Offset);
4728       printFunctionStackSize(Obj, SymValue,
4729                              toSectionRef<ELFT>(Obj, FunctionELFSec),
4730                              SectionName, Data, &Offset);
4731     }
4732   }
4733 }
4734 
4735 template <class ELFT>
4736 void DumpStyle<ELFT>::printRelocatableStackSizes(
4737     const ELFObjectFile<ELFT> *Obj, std::function<void()> PrintHeader) {
4738   const ELFFile<ELFT> *EF = Obj->getELFFile();
4739 
4740   // Build a map between stack size sections and their corresponding relocation
4741   // sections.
4742   llvm::MapVector<SectionRef, SectionRef> StackSizeRelocMap;
4743   const SectionRef NullSection{};
4744 
4745   for (const SectionRef &Sec : Obj->sections()) {
4746     StringRef SectionName;
4747     if (Expected<StringRef> NameOrErr = Sec.getName())
4748       SectionName = *NameOrErr;
4749     else
4750       consumeError(NameOrErr.takeError());
4751 
4752     // A stack size section that we haven't encountered yet is mapped to the
4753     // null section until we find its corresponding relocation section.
4754     if (SectionName.startswith(".stack_sizes"))
4755       if (StackSizeRelocMap.count(Sec) == 0) {
4756         StackSizeRelocMap[Sec] = NullSection;
4757         continue;
4758       }
4759 
4760     // Check relocation sections if they are relocating contents of a
4761     // stack sizes section.
4762     const Elf_Shdr *ElfSec = Obj->getSection(Sec.getRawDataRefImpl());
4763     uint32_t SectionType = ElfSec->sh_type;
4764     if (SectionType != ELF::SHT_RELA && SectionType != ELF::SHT_REL)
4765       continue;
4766 
4767     SectionRef Contents = *Sec.getRelocatedSection();
4768     const Elf_Shdr *ContentsSec = Obj->getSection(Contents.getRawDataRefImpl());
4769     Expected<StringRef> ContentsSectionNameOrErr =
4770         EF->getSectionName(ContentsSec);
4771     if (!ContentsSectionNameOrErr) {
4772       consumeError(ContentsSectionNameOrErr.takeError());
4773       continue;
4774     }
4775     if (!ContentsSectionNameOrErr->startswith(".stack_sizes"))
4776       continue;
4777     // Insert a mapping from the stack sizes section to its relocation section.
4778     StackSizeRelocMap[toSectionRef<ELFT>(Obj, ContentsSec)] = Sec;
4779   }
4780 
4781   for (const auto &StackSizeMapEntry : StackSizeRelocMap) {
4782     PrintHeader();
4783     const SectionRef &StackSizesSec = StackSizeMapEntry.first;
4784     const SectionRef &RelocSec = StackSizeMapEntry.second;
4785 
4786     // Warn about stack size sections without a relocation section.
4787     StringRef StackSizeSectionName;
4788     if (Expected<StringRef> NameOrErr = StackSizesSec.getName())
4789       StackSizeSectionName = *NameOrErr;
4790     else
4791       consumeError(NameOrErr.takeError());
4792 
4793     if (RelocSec == NullSection) {
4794       reportWarning(createError("section " + StackSizeSectionName +
4795                                 " does not have a corresponding "
4796                                 "relocation section"),
4797                     Obj->getFileName());
4798       continue;
4799     }
4800 
4801     // A .stack_sizes section header's sh_link field is supposed to point
4802     // to the section that contains the functions whose stack sizes are
4803     // described in it.
4804     const Elf_Shdr *StackSizesELFSec =
4805         Obj->getSection(StackSizesSec.getRawDataRefImpl());
4806     const SectionRef FunctionSec = toSectionRef<ELFT>(
4807         Obj, unwrapOrError(this->FileName,
4808                            EF->getSection(StackSizesELFSec->sh_link)));
4809 
4810     bool (*IsSupportedFn)(uint64_t);
4811     RelocationResolver Resolver;
4812     std::tie(IsSupportedFn, Resolver) = getRelocationResolver(*Obj);
4813     auto Contents = unwrapOrError(this->FileName, StackSizesSec.getContents());
4814     DataExtractor Data(
4815         StringRef(reinterpret_cast<const char *>(Contents.data()),
4816                   Contents.size()),
4817         Obj->isLittleEndian(), sizeof(Elf_Addr));
4818     for (const RelocationRef &Reloc : RelocSec.relocations()) {
4819       if (!IsSupportedFn(Reloc.getType())) {
4820         StringRef RelocSectionName;
4821         Expected<StringRef> NameOrErr = RelocSec.getName();
4822         if (NameOrErr)
4823           RelocSectionName = *NameOrErr;
4824         else
4825           consumeError(NameOrErr.takeError());
4826 
4827         StringRef RelocName = EF->getRelocationTypeName(Reloc.getType());
4828         reportError(
4829             createStringError(object_error::parse_failed,
4830                               "unsupported relocation type in section %s: %s",
4831                               RelocSectionName.data(), RelocName.data()),
4832             Obj->getFileName());
4833       }
4834       this->printStackSize(Obj, Reloc, FunctionSec, StackSizeSectionName,
4835                            Resolver, Data);
4836     }
4837   }
4838 }
4839 
4840 template <class ELFT>
4841 void GNUStyle<ELFT>::printStackSizes(const ELFObjectFile<ELFT> *Obj) {
4842   bool HeaderHasBeenPrinted = false;
4843   auto PrintHeader = [&]() {
4844     if (HeaderHasBeenPrinted)
4845       return;
4846     OS << "\nStack Sizes:\n";
4847     OS.PadToColumn(9);
4848     OS << "Size";
4849     OS.PadToColumn(18);
4850     OS << "Function\n";
4851     HeaderHasBeenPrinted = true;
4852   };
4853 
4854   // For non-relocatable objects, look directly for sections whose name starts
4855   // with .stack_sizes and process the contents.
4856   if (Obj->isRelocatableObject())
4857     this->printRelocatableStackSizes(Obj, PrintHeader);
4858   else
4859     this->printNonRelocatableStackSizes(Obj, PrintHeader);
4860 }
4861 
4862 template <class ELFT>
4863 void GNUStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) {
4864   size_t Bias = ELFT::Is64Bits ? 8 : 0;
4865   auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) {
4866     OS.PadToColumn(2);
4867     OS << format_hex_no_prefix(Parser.getGotAddress(E), 8 + Bias);
4868     OS.PadToColumn(11 + Bias);
4869     OS << format_decimal(Parser.getGotOffset(E), 6) << "(gp)";
4870     OS.PadToColumn(22 + Bias);
4871     OS << format_hex_no_prefix(*E, 8 + Bias);
4872     OS.PadToColumn(31 + 2 * Bias);
4873     OS << Purpose << "\n";
4874   };
4875 
4876   OS << (Parser.IsStatic ? "Static GOT:\n" : "Primary GOT:\n");
4877   OS << " Canonical gp value: "
4878      << format_hex_no_prefix(Parser.getGp(), 8 + Bias) << "\n\n";
4879 
4880   OS << " Reserved entries:\n";
4881   if (ELFT::Is64Bits)
4882     OS << "           Address     Access          Initial Purpose\n";
4883   else
4884     OS << "   Address     Access  Initial Purpose\n";
4885   PrintEntry(Parser.getGotLazyResolver(), "Lazy resolver");
4886   if (Parser.getGotModulePointer())
4887     PrintEntry(Parser.getGotModulePointer(), "Module pointer (GNU extension)");
4888 
4889   if (!Parser.getLocalEntries().empty()) {
4890     OS << "\n";
4891     OS << " Local entries:\n";
4892     if (ELFT::Is64Bits)
4893       OS << "           Address     Access          Initial\n";
4894     else
4895       OS << "   Address     Access  Initial\n";
4896     for (auto &E : Parser.getLocalEntries())
4897       PrintEntry(&E, "");
4898   }
4899 
4900   if (Parser.IsStatic)
4901     return;
4902 
4903   if (!Parser.getGlobalEntries().empty()) {
4904     OS << "\n";
4905     OS << " Global entries:\n";
4906     if (ELFT::Is64Bits)
4907       OS << "           Address     Access          Initial         Sym.Val."
4908          << " Type    Ndx Name\n";
4909     else
4910       OS << "   Address     Access  Initial Sym.Val. Type    Ndx Name\n";
4911     for (auto &E : Parser.getGlobalEntries()) {
4912       const Elf_Sym *Sym = Parser.getGotSym(&E);
4913       std::string SymName = this->dumper()->getFullSymbolName(
4914           Sym, this->dumper()->getDynamicStringTable(), false);
4915 
4916       OS.PadToColumn(2);
4917       OS << to_string(format_hex_no_prefix(Parser.getGotAddress(&E), 8 + Bias));
4918       OS.PadToColumn(11 + Bias);
4919       OS << to_string(format_decimal(Parser.getGotOffset(&E), 6)) + "(gp)";
4920       OS.PadToColumn(22 + Bias);
4921       OS << to_string(format_hex_no_prefix(E, 8 + Bias));
4922       OS.PadToColumn(31 + 2 * Bias);
4923       OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias));
4924       OS.PadToColumn(40 + 3 * Bias);
4925       OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes));
4926       OS.PadToColumn(48 + 3 * Bias);
4927       OS << getSymbolSectionNdx(Parser.Obj, Sym,
4928                                 this->dumper()->dynamic_symbols().begin());
4929       OS.PadToColumn(52 + 3 * Bias);
4930       OS << SymName << "\n";
4931     }
4932   }
4933 
4934   if (!Parser.getOtherEntries().empty())
4935     OS << "\n Number of TLS and multi-GOT entries "
4936        << Parser.getOtherEntries().size() << "\n";
4937 }
4938 
4939 template <class ELFT>
4940 void GNUStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) {
4941   size_t Bias = ELFT::Is64Bits ? 8 : 0;
4942   auto PrintEntry = [&](const Elf_Addr *E, StringRef Purpose) {
4943     OS.PadToColumn(2);
4944     OS << format_hex_no_prefix(Parser.getPltAddress(E), 8 + Bias);
4945     OS.PadToColumn(11 + Bias);
4946     OS << format_hex_no_prefix(*E, 8 + Bias);
4947     OS.PadToColumn(20 + 2 * Bias);
4948     OS << Purpose << "\n";
4949   };
4950 
4951   OS << "PLT GOT:\n\n";
4952 
4953   OS << " Reserved entries:\n";
4954   OS << "   Address  Initial Purpose\n";
4955   PrintEntry(Parser.getPltLazyResolver(), "PLT lazy resolver");
4956   if (Parser.getPltModulePointer())
4957     PrintEntry(Parser.getPltModulePointer(), "Module pointer");
4958 
4959   if (!Parser.getPltEntries().empty()) {
4960     OS << "\n";
4961     OS << " Entries:\n";
4962     OS << "   Address  Initial Sym.Val. Type    Ndx Name\n";
4963     for (auto &E : Parser.getPltEntries()) {
4964       const Elf_Sym *Sym = Parser.getPltSym(&E);
4965       std::string SymName = this->dumper()->getFullSymbolName(
4966           Sym, this->dumper()->getDynamicStringTable(), false);
4967 
4968       OS.PadToColumn(2);
4969       OS << to_string(format_hex_no_prefix(Parser.getPltAddress(&E), 8 + Bias));
4970       OS.PadToColumn(11 + Bias);
4971       OS << to_string(format_hex_no_prefix(E, 8 + Bias));
4972       OS.PadToColumn(20 + 2 * Bias);
4973       OS << to_string(format_hex_no_prefix(Sym->st_value, 8 + Bias));
4974       OS.PadToColumn(29 + 3 * Bias);
4975       OS << printEnum(Sym->getType(), makeArrayRef(ElfSymbolTypes));
4976       OS.PadToColumn(37 + 3 * Bias);
4977       OS << getSymbolSectionNdx(Parser.Obj, Sym,
4978                                 this->dumper()->dynamic_symbols().begin());
4979       OS.PadToColumn(41 + 3 * Bias);
4980       OS << SymName << "\n";
4981     }
4982   }
4983 }
4984 
4985 template <class ELFT> void LLVMStyle<ELFT>::printFileHeaders(const ELFO *Obj) {
4986   const Elf_Ehdr *E = Obj->getHeader();
4987   {
4988     DictScope D(W, "ElfHeader");
4989     {
4990       DictScope D(W, "Ident");
4991       W.printBinary("Magic", makeArrayRef(E->e_ident).slice(ELF::EI_MAG0, 4));
4992       W.printEnum("Class", E->e_ident[ELF::EI_CLASS], makeArrayRef(ElfClass));
4993       W.printEnum("DataEncoding", E->e_ident[ELF::EI_DATA],
4994                   makeArrayRef(ElfDataEncoding));
4995       W.printNumber("FileVersion", E->e_ident[ELF::EI_VERSION]);
4996 
4997       auto OSABI = makeArrayRef(ElfOSABI);
4998       if (E->e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH &&
4999           E->e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) {
5000         switch (E->e_machine) {
5001         case ELF::EM_AMDGPU:
5002           OSABI = makeArrayRef(AMDGPUElfOSABI);
5003           break;
5004         case ELF::EM_ARM:
5005           OSABI = makeArrayRef(ARMElfOSABI);
5006           break;
5007         case ELF::EM_TI_C6000:
5008           OSABI = makeArrayRef(C6000ElfOSABI);
5009           break;
5010         }
5011       }
5012       W.printEnum("OS/ABI", E->e_ident[ELF::EI_OSABI], OSABI);
5013       W.printNumber("ABIVersion", E->e_ident[ELF::EI_ABIVERSION]);
5014       W.printBinary("Unused", makeArrayRef(E->e_ident).slice(ELF::EI_PAD));
5015     }
5016 
5017     W.printEnum("Type", E->e_type, makeArrayRef(ElfObjectFileType));
5018     W.printEnum("Machine", E->e_machine, makeArrayRef(ElfMachineType));
5019     W.printNumber("Version", E->e_version);
5020     W.printHex("Entry", E->e_entry);
5021     W.printHex("ProgramHeaderOffset", E->e_phoff);
5022     W.printHex("SectionHeaderOffset", E->e_shoff);
5023     if (E->e_machine == EM_MIPS)
5024       W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderMipsFlags),
5025                    unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI),
5026                    unsigned(ELF::EF_MIPS_MACH));
5027     else if (E->e_machine == EM_AMDGPU)
5028       W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderAMDGPUFlags),
5029                    unsigned(ELF::EF_AMDGPU_MACH));
5030     else if (E->e_machine == EM_RISCV)
5031       W.printFlags("Flags", E->e_flags, makeArrayRef(ElfHeaderRISCVFlags));
5032     else
5033       W.printFlags("Flags", E->e_flags);
5034     W.printNumber("HeaderSize", E->e_ehsize);
5035     W.printNumber("ProgramHeaderEntrySize", E->e_phentsize);
5036     W.printNumber("ProgramHeaderCount", E->e_phnum);
5037     W.printNumber("SectionHeaderEntrySize", E->e_shentsize);
5038     W.printString("SectionHeaderCount",
5039                   getSectionHeadersNumString(Obj, this->FileName));
5040     W.printString("StringTableSectionIndex",
5041                   getSectionHeaderTableIndexString(Obj, this->FileName));
5042   }
5043 }
5044 
5045 template <class ELFT>
5046 void LLVMStyle<ELFT>::printGroupSections(const ELFO *Obj) {
5047   DictScope Lists(W, "Groups");
5048   std::vector<GroupSection> V = getGroups<ELFT>(Obj, this->FileName);
5049   DenseMap<uint64_t, const GroupSection *> Map = mapSectionsToGroups(V);
5050   for (const GroupSection &G : V) {
5051     DictScope D(W, "Group");
5052     W.printNumber("Name", G.Name, G.ShName);
5053     W.printNumber("Index", G.Index);
5054     W.printNumber("Link", G.Link);
5055     W.printNumber("Info", G.Info);
5056     W.printHex("Type", getGroupType(G.Type), G.Type);
5057     W.startLine() << "Signature: " << G.Signature << "\n";
5058 
5059     ListScope L(W, "Section(s) in group");
5060     for (const GroupMember &GM : G.Members) {
5061       const GroupSection *MainGroup = Map[GM.Index];
5062       if (MainGroup != &G) {
5063         W.flush();
5064         errs() << "Error: " << GM.Name << " (" << GM.Index
5065                << ") in a group " + G.Name + " (" << G.Index
5066                << ") is already in a group " + MainGroup->Name + " ("
5067                << MainGroup->Index << ")\n";
5068         errs().flush();
5069         continue;
5070       }
5071       W.startLine() << GM.Name << " (" << GM.Index << ")\n";
5072     }
5073   }
5074 
5075   if (V.empty())
5076     W.startLine() << "There are no group sections in the file.\n";
5077 }
5078 
5079 template <class ELFT> void LLVMStyle<ELFT>::printRelocations(const ELFO *Obj) {
5080   ListScope D(W, "Relocations");
5081 
5082   int SectionNumber = -1;
5083   for (const Elf_Shdr &Sec : unwrapOrError(this->FileName, Obj->sections())) {
5084     ++SectionNumber;
5085 
5086     if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA &&
5087         Sec.sh_type != ELF::SHT_RELR && Sec.sh_type != ELF::SHT_ANDROID_REL &&
5088         Sec.sh_type != ELF::SHT_ANDROID_RELA &&
5089         Sec.sh_type != ELF::SHT_ANDROID_RELR)
5090       continue;
5091 
5092     StringRef Name = unwrapOrError(this->FileName, Obj->getSectionName(&Sec));
5093 
5094     W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n";
5095     W.indent();
5096 
5097     printRelocations(&Sec, Obj);
5098 
5099     W.unindent();
5100     W.startLine() << "}\n";
5101   }
5102 }
5103 
5104 template <class ELFT>
5105 void LLVMStyle<ELFT>::printRelocations(const Elf_Shdr *Sec, const ELFO *Obj) {
5106   const Elf_Shdr *SymTab =
5107       unwrapOrError(this->FileName, Obj->getSection(Sec->sh_link));
5108 
5109   switch (Sec->sh_type) {
5110   case ELF::SHT_REL:
5111     for (const Elf_Rel &R : unwrapOrError(this->FileName, Obj->rels(Sec))) {
5112       Elf_Rela Rela;
5113       Rela.r_offset = R.r_offset;
5114       Rela.r_info = R.r_info;
5115       Rela.r_addend = 0;
5116       printRelocation(Obj, Rela, SymTab);
5117     }
5118     break;
5119   case ELF::SHT_RELA:
5120     for (const Elf_Rela &R : unwrapOrError(this->FileName, Obj->relas(Sec)))
5121       printRelocation(Obj, R, SymTab);
5122     break;
5123   case ELF::SHT_RELR:
5124   case ELF::SHT_ANDROID_RELR: {
5125     Elf_Relr_Range Relrs = unwrapOrError(this->FileName, Obj->relrs(Sec));
5126     if (opts::RawRelr) {
5127       for (const Elf_Relr &R : Relrs)
5128         W.startLine() << W.hex(R) << "\n";
5129     } else {
5130       std::vector<Elf_Rela> RelrRelas =
5131           unwrapOrError(this->FileName, Obj->decode_relrs(Relrs));
5132       for (const Elf_Rela &R : RelrRelas)
5133         printRelocation(Obj, R, SymTab);
5134     }
5135     break;
5136   }
5137   case ELF::SHT_ANDROID_REL:
5138   case ELF::SHT_ANDROID_RELA:
5139     for (const Elf_Rela &R :
5140          unwrapOrError(this->FileName, Obj->android_relas(Sec)))
5141       printRelocation(Obj, R, SymTab);
5142     break;
5143   }
5144 }
5145 
5146 template <class ELFT>
5147 void LLVMStyle<ELFT>::printRelocation(const ELFO *Obj, Elf_Rela Rel,
5148                                       const Elf_Shdr *SymTab) {
5149   SmallString<32> RelocName;
5150   Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName);
5151   std::string TargetName;
5152   const Elf_Sym *Sym =
5153       unwrapOrError(this->FileName, Obj->getRelocationSymbol(&Rel, SymTab));
5154   if (Sym && Sym->getType() == ELF::STT_SECTION) {
5155     const Elf_Shdr *Sec = unwrapOrError(
5156         this->FileName,
5157         Obj->getSection(Sym, SymTab, this->dumper()->getShndxTable()));
5158     TargetName = unwrapOrError(this->FileName, Obj->getSectionName(Sec));
5159   } else if (Sym) {
5160     StringRef StrTable =
5161         unwrapOrError(this->FileName, Obj->getStringTableForSymtab(*SymTab));
5162     TargetName = this->dumper()->getFullSymbolName(
5163         Sym, StrTable, SymTab->sh_type == SHT_DYNSYM /* IsDynamic */);
5164   }
5165 
5166   if (opts::ExpandRelocs) {
5167     DictScope Group(W, "Relocation");
5168     W.printHex("Offset", Rel.r_offset);
5169     W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL()));
5170     W.printNumber("Symbol", !TargetName.empty() ? TargetName : "-",
5171                   Rel.getSymbol(Obj->isMips64EL()));
5172     W.printHex("Addend", Rel.r_addend);
5173   } else {
5174     raw_ostream &OS = W.startLine();
5175     OS << W.hex(Rel.r_offset) << " " << RelocName << " "
5176        << (!TargetName.empty() ? TargetName : "-") << " " << W.hex(Rel.r_addend)
5177        << "\n";
5178   }
5179 }
5180 
5181 template <class ELFT>
5182 void LLVMStyle<ELFT>::printSectionHeaders(const ELFO *Obj) {
5183   ListScope SectionsD(W, "Sections");
5184 
5185   int SectionIndex = -1;
5186   ArrayRef<Elf_Shdr> Sections = unwrapOrError(this->FileName, Obj->sections());
5187   const ELFObjectFile<ELFT> *ElfObj = this->dumper()->getElfObject();
5188   for (const Elf_Shdr &Sec : Sections) {
5189     StringRef Name = unwrapOrError(
5190         ElfObj->getFileName(), Obj->getSectionName(&Sec, this->WarningHandler));
5191     DictScope SectionD(W, "Section");
5192     W.printNumber("Index", ++SectionIndex);
5193     W.printNumber("Name", Name, Sec.sh_name);
5194     W.printHex(
5195         "Type",
5196         object::getELFSectionTypeName(Obj->getHeader()->e_machine, Sec.sh_type),
5197         Sec.sh_type);
5198     std::vector<EnumEntry<unsigned>> SectionFlags(std::begin(ElfSectionFlags),
5199                                                   std::end(ElfSectionFlags));
5200     switch (Obj->getHeader()->e_machine) {
5201     case EM_ARM:
5202       SectionFlags.insert(SectionFlags.end(), std::begin(ElfARMSectionFlags),
5203                           std::end(ElfARMSectionFlags));
5204       break;
5205     case EM_HEXAGON:
5206       SectionFlags.insert(SectionFlags.end(),
5207                           std::begin(ElfHexagonSectionFlags),
5208                           std::end(ElfHexagonSectionFlags));
5209       break;
5210     case EM_MIPS:
5211       SectionFlags.insert(SectionFlags.end(), std::begin(ElfMipsSectionFlags),
5212                           std::end(ElfMipsSectionFlags));
5213       break;
5214     case EM_X86_64:
5215       SectionFlags.insert(SectionFlags.end(), std::begin(ElfX86_64SectionFlags),
5216                           std::end(ElfX86_64SectionFlags));
5217       break;
5218     case EM_XCORE:
5219       SectionFlags.insert(SectionFlags.end(), std::begin(ElfXCoreSectionFlags),
5220                           std::end(ElfXCoreSectionFlags));
5221       break;
5222     default:
5223       // Nothing to do.
5224       break;
5225     }
5226     W.printFlags("Flags", Sec.sh_flags, makeArrayRef(SectionFlags));
5227     W.printHex("Address", Sec.sh_addr);
5228     W.printHex("Offset", Sec.sh_offset);
5229     W.printNumber("Size", Sec.sh_size);
5230     W.printNumber("Link", Sec.sh_link);
5231     W.printNumber("Info", Sec.sh_info);
5232     W.printNumber("AddressAlignment", Sec.sh_addralign);
5233     W.printNumber("EntrySize", Sec.sh_entsize);
5234 
5235     if (opts::SectionRelocations) {
5236       ListScope D(W, "Relocations");
5237       printRelocations(&Sec, Obj);
5238     }
5239 
5240     if (opts::SectionSymbols) {
5241       ListScope D(W, "Symbols");
5242       const Elf_Shdr *Symtab = this->dumper()->getDotSymtabSec();
5243       StringRef StrTable =
5244           unwrapOrError(this->FileName, Obj->getStringTableForSymtab(*Symtab));
5245 
5246       for (const Elf_Sym &Sym :
5247            unwrapOrError(this->FileName, Obj->symbols(Symtab))) {
5248         const Elf_Shdr *SymSec = unwrapOrError(
5249             this->FileName,
5250             Obj->getSection(&Sym, Symtab, this->dumper()->getShndxTable()));
5251         if (SymSec == &Sec)
5252           printSymbol(
5253               Obj, &Sym,
5254               unwrapOrError(this->FileName, Obj->symbols(Symtab)).begin(),
5255               StrTable, false);
5256       }
5257     }
5258 
5259     if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) {
5260       ArrayRef<uint8_t> Data =
5261           unwrapOrError(this->FileName, Obj->getSectionContents(&Sec));
5262       W.printBinaryBlock(
5263           "SectionData",
5264           StringRef(reinterpret_cast<const char *>(Data.data()), Data.size()));
5265     }
5266   }
5267 }
5268 
5269 template <class ELFT>
5270 void LLVMStyle<ELFT>::printSymbol(const ELFO *Obj, const Elf_Sym *Symbol,
5271                                   const Elf_Sym *First, StringRef StrTable,
5272                                   bool IsDynamic) {
5273   unsigned SectionIndex = 0;
5274   StringRef SectionName;
5275   this->dumper()->getSectionNameIndex(Symbol, First, SectionName, SectionIndex);
5276   std::string FullSymbolName =
5277       this->dumper()->getFullSymbolName(Symbol, StrTable, IsDynamic);
5278   unsigned char SymbolType = Symbol->getType();
5279 
5280   DictScope D(W, "Symbol");
5281   W.printNumber("Name", FullSymbolName, Symbol->st_name);
5282   W.printHex("Value", Symbol->st_value);
5283   W.printNumber("Size", Symbol->st_size);
5284   W.printEnum("Binding", Symbol->getBinding(), makeArrayRef(ElfSymbolBindings));
5285   if (Obj->getHeader()->e_machine == ELF::EM_AMDGPU &&
5286       SymbolType >= ELF::STT_LOOS && SymbolType < ELF::STT_HIOS)
5287     W.printEnum("Type", SymbolType, makeArrayRef(AMDGPUSymbolTypes));
5288   else
5289     W.printEnum("Type", SymbolType, makeArrayRef(ElfSymbolTypes));
5290   if (Symbol->st_other == 0)
5291     // Usually st_other flag is zero. Do not pollute the output
5292     // by flags enumeration in that case.
5293     W.printNumber("Other", 0);
5294   else {
5295     std::vector<EnumEntry<unsigned>> SymOtherFlags(std::begin(ElfSymOtherFlags),
5296                                                    std::end(ElfSymOtherFlags));
5297     if (Obj->getHeader()->e_machine == EM_MIPS) {
5298       // Someones in their infinite wisdom decided to make STO_MIPS_MIPS16
5299       // flag overlapped with other ST_MIPS_xxx flags. So consider both
5300       // cases separately.
5301       if ((Symbol->st_other & STO_MIPS_MIPS16) == STO_MIPS_MIPS16)
5302         SymOtherFlags.insert(SymOtherFlags.end(),
5303                              std::begin(ElfMips16SymOtherFlags),
5304                              std::end(ElfMips16SymOtherFlags));
5305       else
5306         SymOtherFlags.insert(SymOtherFlags.end(),
5307                              std::begin(ElfMipsSymOtherFlags),
5308                              std::end(ElfMipsSymOtherFlags));
5309     }
5310     W.printFlags("Other", Symbol->st_other, makeArrayRef(SymOtherFlags), 0x3u);
5311   }
5312   W.printHex("Section", SectionName, SectionIndex);
5313 }
5314 
5315 template <class ELFT>
5316 void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj, bool PrintSymbols,
5317                                    bool PrintDynamicSymbols) {
5318   if (PrintSymbols)
5319     printSymbols(Obj);
5320   if (PrintDynamicSymbols)
5321     printDynamicSymbols(Obj);
5322 }
5323 
5324 template <class ELFT> void LLVMStyle<ELFT>::printSymbols(const ELFO *Obj) {
5325   ListScope Group(W, "Symbols");
5326   this->dumper()->printSymbolsHelper(false);
5327 }
5328 
5329 template <class ELFT>
5330 void LLVMStyle<ELFT>::printDynamicSymbols(const ELFO *Obj) {
5331   ListScope Group(W, "DynamicSymbols");
5332   this->dumper()->printSymbolsHelper(true);
5333 }
5334 
5335 template <class ELFT> void LLVMStyle<ELFT>::printDynamic(const ELFFile<ELFT> *Obj) {
5336   Elf_Dyn_Range Table = this->dumper()->dynamic_table();
5337   if (Table.empty())
5338     return;
5339 
5340   raw_ostream &OS = W.getOStream();
5341   W.startLine() << "DynamicSection [ (" << Table.size() << " entries)\n";
5342 
5343   bool Is64 = ELFT::Is64Bits;
5344   if (Is64)
5345     W.startLine() << "  Tag                Type                 Name/Value\n";
5346   else
5347     W.startLine() << "  Tag        Type                 Name/Value\n";
5348   for (auto Entry : Table) {
5349     uintX_t Tag = Entry.getTag();
5350     W.startLine() << "  " << format_hex(Tag, Is64 ? 18 : 10, true) << " "
5351                   << format("%-21s",
5352                             getTypeString(Obj->getHeader()->e_machine, Tag));
5353     this->dumper()->printDynamicEntry(OS, Tag, Entry.getVal());
5354     OS << "\n";
5355   }
5356 
5357   W.startLine() << "]\n";
5358 }
5359 
5360 template <class ELFT>
5361 void LLVMStyle<ELFT>::printDynamicRelocations(const ELFO *Obj) {
5362   const DynRegionInfo &DynRelRegion = this->dumper()->getDynRelRegion();
5363   const DynRegionInfo &DynRelaRegion = this->dumper()->getDynRelaRegion();
5364   const DynRegionInfo &DynRelrRegion = this->dumper()->getDynRelrRegion();
5365   const DynRegionInfo &DynPLTRelRegion = this->dumper()->getDynPLTRelRegion();
5366   if (DynRelRegion.Size && DynRelaRegion.Size)
5367     report_fatal_error("There are both REL and RELA dynamic relocations");
5368   W.startLine() << "Dynamic Relocations {\n";
5369   W.indent();
5370   if (DynRelaRegion.Size > 0)
5371     for (const Elf_Rela &Rela : this->dumper()->dyn_relas())
5372       printDynamicRelocation(Obj, Rela);
5373   else
5374     for (const Elf_Rel &Rel : this->dumper()->dyn_rels()) {
5375       Elf_Rela Rela;
5376       Rela.r_offset = Rel.r_offset;
5377       Rela.r_info = Rel.r_info;
5378       Rela.r_addend = 0;
5379       printDynamicRelocation(Obj, Rela);
5380     }
5381   if (DynRelrRegion.Size > 0) {
5382     Elf_Relr_Range Relrs = this->dumper()->dyn_relrs();
5383     std::vector<Elf_Rela> RelrRelas =
5384         unwrapOrError(this->FileName, Obj->decode_relrs(Relrs));
5385     for (const Elf_Rela &Rela : RelrRelas)
5386       printDynamicRelocation(Obj, Rela);
5387   }
5388   if (DynPLTRelRegion.EntSize == sizeof(Elf_Rela))
5389     for (const Elf_Rela &Rela : DynPLTRelRegion.getAsArrayRef<Elf_Rela>())
5390       printDynamicRelocation(Obj, Rela);
5391   else
5392     for (const Elf_Rel &Rel : DynPLTRelRegion.getAsArrayRef<Elf_Rel>()) {
5393       Elf_Rela Rela;
5394       Rela.r_offset = Rel.r_offset;
5395       Rela.r_info = Rel.r_info;
5396       Rela.r_addend = 0;
5397       printDynamicRelocation(Obj, Rela);
5398     }
5399   W.unindent();
5400   W.startLine() << "}\n";
5401 }
5402 
5403 template <class ELFT>
5404 void LLVMStyle<ELFT>::printDynamicRelocation(const ELFO *Obj, Elf_Rela Rel) {
5405   SmallString<32> RelocName;
5406   Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName);
5407   std::string SymbolName;
5408   uint32_t SymIndex = Rel.getSymbol(Obj->isMips64EL());
5409   const Elf_Sym *Sym = this->dumper()->dynamic_symbols().begin() + SymIndex;
5410   SymbolName = maybeDemangle(unwrapOrError(
5411       this->FileName, Sym->getName(this->dumper()->getDynamicStringTable())));
5412   if (opts::ExpandRelocs) {
5413     DictScope Group(W, "Relocation");
5414     W.printHex("Offset", Rel.r_offset);
5415     W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL()));
5416     W.printString("Symbol", !SymbolName.empty() ? SymbolName : "-");
5417     W.printHex("Addend", Rel.r_addend);
5418   } else {
5419     raw_ostream &OS = W.startLine();
5420     OS << W.hex(Rel.r_offset) << " " << RelocName << " "
5421        << (!SymbolName.empty() ? SymbolName : "-") << " " << W.hex(Rel.r_addend)
5422        << "\n";
5423   }
5424 }
5425 
5426 template <class ELFT>
5427 void LLVMStyle<ELFT>::printProgramHeaders(
5428     const ELFO *Obj, bool PrintProgramHeaders,
5429     cl::boolOrDefault PrintSectionMapping) {
5430   if (PrintProgramHeaders)
5431     printProgramHeaders(Obj);
5432   if (PrintSectionMapping == cl::BOU_TRUE)
5433     printSectionMapping(Obj);
5434 }
5435 
5436 template <class ELFT>
5437 void LLVMStyle<ELFT>::printProgramHeaders(const ELFO *Obj) {
5438   ListScope L(W, "ProgramHeaders");
5439 
5440   for (const Elf_Phdr &Phdr :
5441        unwrapOrError(this->FileName, Obj->program_headers())) {
5442     DictScope P(W, "ProgramHeader");
5443     W.printHex("Type",
5444                getElfSegmentType(Obj->getHeader()->e_machine, Phdr.p_type),
5445                Phdr.p_type);
5446     W.printHex("Offset", Phdr.p_offset);
5447     W.printHex("VirtualAddress", Phdr.p_vaddr);
5448     W.printHex("PhysicalAddress", Phdr.p_paddr);
5449     W.printNumber("FileSize", Phdr.p_filesz);
5450     W.printNumber("MemSize", Phdr.p_memsz);
5451     W.printFlags("Flags", Phdr.p_flags, makeArrayRef(ElfSegmentFlags));
5452     W.printNumber("Alignment", Phdr.p_align);
5453   }
5454 }
5455 
5456 template <class ELFT>
5457 void LLVMStyle<ELFT>::printVersionSymbolSection(const ELFFile<ELFT> *Obj,
5458                                                 const Elf_Shdr *Sec) {
5459   DictScope SS(W, "Version symbols");
5460   if (!Sec)
5461     return;
5462 
5463   StringRef SecName = unwrapOrError(this->FileName, Obj->getSectionName(Sec));
5464   W.printNumber("Section Name", SecName, Sec->sh_name);
5465   W.printHex("Address", Sec->sh_addr);
5466   W.printHex("Offset", Sec->sh_offset);
5467   W.printNumber("Link", Sec->sh_link);
5468 
5469   const uint8_t *VersymBuf =
5470       reinterpret_cast<const uint8_t *>(Obj->base() + Sec->sh_offset);
5471   const ELFDumper<ELFT> *Dumper = this->dumper();
5472   StringRef StrTable = Dumper->getDynamicStringTable();
5473 
5474   // Same number of entries in the dynamic symbol table (DT_SYMTAB).
5475   ListScope Syms(W, "Symbols");
5476   for (const Elf_Sym &Sym : Dumper->dynamic_symbols()) {
5477     DictScope S(W, "Symbol");
5478     const Elf_Versym *Versym = reinterpret_cast<const Elf_Versym *>(VersymBuf);
5479     std::string FullSymbolName =
5480         Dumper->getFullSymbolName(&Sym, StrTable, true /* IsDynamic */);
5481     W.printNumber("Version", Versym->vs_index & VERSYM_VERSION);
5482     W.printString("Name", FullSymbolName);
5483     VersymBuf += sizeof(Elf_Versym);
5484   }
5485 }
5486 
5487 template <class ELFT>
5488 void LLVMStyle<ELFT>::printVersionDefinitionSection(const ELFFile<ELFT> *Obj,
5489                                                     const Elf_Shdr *Sec) {
5490   DictScope SD(W, "SHT_GNU_verdef");
5491   if (!Sec)
5492     return;
5493 
5494   const uint8_t *SecStartAddress =
5495       reinterpret_cast<const uint8_t *>(Obj->base() + Sec->sh_offset);
5496   const uint8_t *SecEndAddress = SecStartAddress + Sec->sh_size;
5497   const uint8_t *VerdefBuf = SecStartAddress;
5498   const Elf_Shdr *StrTab =
5499       unwrapOrError(this->FileName, Obj->getSection(Sec->sh_link));
5500 
5501   unsigned VerDefsNum = Sec->sh_info;
5502   while (VerDefsNum--) {
5503     if (VerdefBuf + sizeof(Elf_Verdef) > SecEndAddress)
5504       // FIXME: report_fatal_error is not a good way to report error. We should
5505       // emit a parsing error here and below.
5506       report_fatal_error("invalid offset in the section");
5507 
5508     const Elf_Verdef *Verdef = reinterpret_cast<const Elf_Verdef *>(VerdefBuf);
5509     DictScope Def(W, "Definition");
5510     W.printNumber("Version", Verdef->vd_version);
5511     W.printEnum("Flags", Verdef->vd_flags, makeArrayRef(SymVersionFlags));
5512     W.printNumber("Index", Verdef->vd_ndx);
5513     W.printNumber("Hash", Verdef->vd_hash);
5514     W.printString("Name", StringRef(reinterpret_cast<const char *>(
5515                               Obj->base() + StrTab->sh_offset +
5516                               Verdef->getAux()->vda_name)));
5517     if (!Verdef->vd_cnt)
5518       report_fatal_error("at least one definition string must exist");
5519     if (Verdef->vd_cnt > 2)
5520       report_fatal_error("more than one predecessor is not expected");
5521 
5522     if (Verdef->vd_cnt == 2) {
5523       const uint8_t *VerdauxBuf =
5524           VerdefBuf + Verdef->vd_aux + Verdef->getAux()->vda_next;
5525       const Elf_Verdaux *Verdaux =
5526           reinterpret_cast<const Elf_Verdaux *>(VerdauxBuf);
5527       W.printString("Predecessor",
5528                     StringRef(reinterpret_cast<const char *>(
5529                         Obj->base() + StrTab->sh_offset + Verdaux->vda_name)));
5530     }
5531     VerdefBuf += Verdef->vd_next;
5532   }
5533 }
5534 
5535 template <class ELFT>
5536 void LLVMStyle<ELFT>::printVersionDependencySection(const ELFFile<ELFT> *Obj,
5537                                                     const Elf_Shdr *Sec) {
5538   DictScope SD(W, "SHT_GNU_verneed");
5539   if (!Sec)
5540     return;
5541 
5542   const uint8_t *SecData =
5543       reinterpret_cast<const uint8_t *>(Obj->base() + Sec->sh_offset);
5544   const Elf_Shdr *StrTab =
5545       unwrapOrError(this->FileName, Obj->getSection(Sec->sh_link));
5546 
5547   const uint8_t *VerneedBuf = SecData;
5548   unsigned VerneedNum = Sec->sh_info;
5549   for (unsigned I = 0; I < VerneedNum; ++I) {
5550     const Elf_Verneed *Verneed =
5551         reinterpret_cast<const Elf_Verneed *>(VerneedBuf);
5552     DictScope Entry(W, "Dependency");
5553     W.printNumber("Version", Verneed->vn_version);
5554     W.printNumber("Count", Verneed->vn_cnt);
5555     W.printString("FileName",
5556                   StringRef(reinterpret_cast<const char *>(
5557                       Obj->base() + StrTab->sh_offset + Verneed->vn_file)));
5558 
5559     const uint8_t *VernauxBuf = VerneedBuf + Verneed->vn_aux;
5560     ListScope L(W, "Entries");
5561     for (unsigned J = 0; J < Verneed->vn_cnt; ++J) {
5562       const Elf_Vernaux *Vernaux =
5563           reinterpret_cast<const Elf_Vernaux *>(VernauxBuf);
5564       DictScope Entry(W, "Entry");
5565       W.printNumber("Hash", Vernaux->vna_hash);
5566       W.printEnum("Flags", Vernaux->vna_flags, makeArrayRef(SymVersionFlags));
5567       W.printNumber("Index", Vernaux->vna_other);
5568       W.printString("Name",
5569                     StringRef(reinterpret_cast<const char *>(
5570                         Obj->base() + StrTab->sh_offset + Vernaux->vna_name)));
5571       VernauxBuf += Vernaux->vna_next;
5572     }
5573     VerneedBuf += Verneed->vn_next;
5574   }
5575 }
5576 
5577 template <class ELFT>
5578 void LLVMStyle<ELFT>::printHashHistogram(const ELFFile<ELFT> *Obj) {
5579   W.startLine() << "Hash Histogram not implemented!\n";
5580 }
5581 
5582 template <class ELFT>
5583 void LLVMStyle<ELFT>::printCGProfile(const ELFFile<ELFT> *Obj) {
5584   ListScope L(W, "CGProfile");
5585   if (!this->dumper()->getDotCGProfileSec())
5586     return;
5587   auto CGProfile = unwrapOrError(
5588       this->FileName, Obj->template getSectionContentsAsArray<Elf_CGProfile>(
5589                           this->dumper()->getDotCGProfileSec()));
5590   for (const Elf_CGProfile &CGPE : CGProfile) {
5591     DictScope D(W, "CGProfileEntry");
5592     W.printNumber("From", this->dumper()->getStaticSymbolName(CGPE.cgp_from),
5593                   CGPE.cgp_from);
5594     W.printNumber("To", this->dumper()->getStaticSymbolName(CGPE.cgp_to),
5595                   CGPE.cgp_to);
5596     W.printNumber("Weight", CGPE.cgp_weight);
5597   }
5598 }
5599 
5600 template <class ELFT>
5601 void LLVMStyle<ELFT>::printAddrsig(const ELFFile<ELFT> *Obj) {
5602   ListScope L(W, "Addrsig");
5603   if (!this->dumper()->getDotAddrsigSec())
5604     return;
5605   ArrayRef<uint8_t> Contents = unwrapOrError(
5606       this->FileName,
5607       Obj->getSectionContents(this->dumper()->getDotAddrsigSec()));
5608   const uint8_t *Cur = Contents.begin();
5609   const uint8_t *End = Contents.end();
5610   while (Cur != End) {
5611     unsigned Size;
5612     const char *Err;
5613     uint64_t SymIndex = decodeULEB128(Cur, &Size, End, &Err);
5614     if (Err)
5615       reportError(createError(Err), this->FileName);
5616 
5617     W.printNumber("Sym", this->dumper()->getStaticSymbolName(SymIndex),
5618                   SymIndex);
5619     Cur += Size;
5620   }
5621 }
5622 
5623 template <typename ELFT>
5624 static void printGNUNoteLLVMStyle(uint32_t NoteType, ArrayRef<uint8_t> Desc,
5625                                   ScopedPrinter &W) {
5626   switch (NoteType) {
5627   default:
5628     return;
5629   case ELF::NT_GNU_ABI_TAG: {
5630     const GNUAbiTag &AbiTag = getGNUAbiTag<ELFT>(Desc);
5631     if (!AbiTag.IsValid) {
5632       W.printString("ABI", "<corrupt GNU_ABI_TAG>");
5633     } else {
5634       W.printString("OS", AbiTag.OSName);
5635       W.printString("ABI", AbiTag.ABI);
5636     }
5637     break;
5638   }
5639   case ELF::NT_GNU_BUILD_ID: {
5640     W.printString("Build ID", getGNUBuildId(Desc));
5641     break;
5642   }
5643   case ELF::NT_GNU_GOLD_VERSION:
5644     W.printString("Version", getGNUGoldVersion(Desc));
5645     break;
5646   case ELF::NT_GNU_PROPERTY_TYPE_0:
5647     ListScope D(W, "Property");
5648     for (const auto &Property : getGNUPropertyList<ELFT>(Desc))
5649       W.printString(Property);
5650     break;
5651   }
5652 }
5653 
5654 static void printCoreNoteLLVMStyle(const CoreNote &Note, ScopedPrinter &W) {
5655   W.printNumber("Page Size", Note.PageSize);
5656   for (const CoreFileMapping &Mapping : Note.Mappings) {
5657     ListScope D(W, "Mapping");
5658     W.printHex("Start", Mapping.Start);
5659     W.printHex("End", Mapping.End);
5660     W.printHex("Offset", Mapping.Offset);
5661     W.printString("Filename", Mapping.Filename);
5662   }
5663 }
5664 
5665 template <class ELFT>
5666 void LLVMStyle<ELFT>::printNotes(const ELFFile<ELFT> *Obj) {
5667   ListScope L(W, "Notes");
5668 
5669   auto PrintHeader = [&](const typename ELFT::Off Offset,
5670                          const typename ELFT::Addr Size) {
5671     W.printHex("Offset", Offset);
5672     W.printHex("Size", Size);
5673   };
5674 
5675   auto ProcessNote = [&](const Elf_Note &Note) {
5676     DictScope D2(W, "Note");
5677     StringRef Name = Note.getName();
5678     ArrayRef<uint8_t> Descriptor = Note.getDesc();
5679     Elf_Word Type = Note.getType();
5680 
5681     // Print the note owner/type.
5682     W.printString("Owner", Name);
5683     W.printHex("Data size", Descriptor.size());
5684     if (Name == "GNU") {
5685       W.printString("Type", getGNUNoteTypeName(Type));
5686     } else if (Name == "FreeBSD") {
5687       W.printString("Type", getFreeBSDNoteTypeName(Type));
5688     } else if (Name == "AMD") {
5689       W.printString("Type", getAMDNoteTypeName(Type));
5690     } else if (Name == "AMDGPU") {
5691       W.printString("Type", getAMDGPUNoteTypeName(Type));
5692     } else {
5693       StringRef NoteType = Obj->getHeader()->e_type == ELF::ET_CORE
5694                                ? getCoreNoteTypeName(Type)
5695                                : getGenericNoteTypeName(Type);
5696       if (!NoteType.empty())
5697         W.printString("Type", NoteType);
5698       else
5699         W.printString("Type",
5700                       "Unknown (" + to_string(format_hex(Type, 10)) + ")");
5701     }
5702 
5703     // Print the description, or fallback to printing raw bytes for unknown
5704     // owners.
5705     if (Name == "GNU") {
5706       printGNUNoteLLVMStyle<ELFT>(Type, Descriptor, W);
5707     } else if (Name == "AMD") {
5708       const AMDNote N = getAMDNote<ELFT>(Type, Descriptor);
5709       if (!N.Type.empty())
5710         W.printString(N.Type, N.Value);
5711     } else if (Name == "AMDGPU") {
5712       const AMDGPUNote N = getAMDGPUNote<ELFT>(Type, Descriptor);
5713       if (!N.Type.empty())
5714         W.printString(N.Type, N.Value);
5715     } else if (Name == "CORE") {
5716       if (Type == ELF::NT_FILE) {
5717         DataExtractor DescExtractor(
5718             StringRef(reinterpret_cast<const char *>(Descriptor.data()),
5719                       Descriptor.size()),
5720             ELFT::TargetEndianness == support::little, sizeof(Elf_Addr));
5721         Expected<CoreNote> Note = readCoreNote(DescExtractor);
5722         if (Note)
5723           printCoreNoteLLVMStyle(*Note, W);
5724         else
5725           reportWarning(Note.takeError(), this->FileName);
5726       }
5727     } else if (!Descriptor.empty()) {
5728       W.printBinaryBlock("Description data", Descriptor);
5729     }
5730   };
5731 
5732   ArrayRef<Elf_Shdr> Sections = unwrapOrError(this->FileName, Obj->sections());
5733   if (Obj->getHeader()->e_type != ELF::ET_CORE && !Sections.empty()) {
5734     for (const auto &S : Sections) {
5735       if (S.sh_type != SHT_NOTE)
5736         continue;
5737       DictScope D(W, "NoteSection");
5738       PrintHeader(S.sh_offset, S.sh_size);
5739       Error Err = Error::success();
5740       for (const auto &Note : Obj->notes(S, Err))
5741         ProcessNote(Note);
5742       if (Err)
5743         reportError(std::move(Err), this->FileName);
5744     }
5745   } else {
5746     for (const auto &P :
5747          unwrapOrError(this->FileName, Obj->program_headers())) {
5748       if (P.p_type != PT_NOTE)
5749         continue;
5750       DictScope D(W, "NoteSection");
5751       PrintHeader(P.p_offset, P.p_filesz);
5752       Error Err = Error::success();
5753       for (const auto &Note : Obj->notes(P, Err))
5754         ProcessNote(Note);
5755       if (Err)
5756         reportError(std::move(Err), this->FileName);
5757     }
5758   }
5759 }
5760 
5761 template <class ELFT>
5762 void LLVMStyle<ELFT>::printELFLinkerOptions(const ELFFile<ELFT> *Obj) {
5763   ListScope L(W, "LinkerOptions");
5764 
5765   for (const Elf_Shdr &Shdr : unwrapOrError(this->FileName, Obj->sections())) {
5766     if (Shdr.sh_type != ELF::SHT_LLVM_LINKER_OPTIONS)
5767       continue;
5768 
5769     ArrayRef<uint8_t> Contents =
5770         unwrapOrError(this->FileName, Obj->getSectionContents(&Shdr));
5771     for (const uint8_t *P = Contents.begin(), *E = Contents.end(); P < E; ) {
5772       StringRef Key = StringRef(reinterpret_cast<const char *>(P));
5773       StringRef Value =
5774           StringRef(reinterpret_cast<const char *>(P) + Key.size() + 1);
5775 
5776       W.printString(Key, Value);
5777 
5778       P = P + Key.size() + Value.size() + 2;
5779     }
5780   }
5781 }
5782 
5783 template <class ELFT>
5784 void LLVMStyle<ELFT>::printStackSizes(const ELFObjectFile<ELFT> *Obj) {
5785   W.printString(
5786       "Dumping of stack sizes in LLVM style is not implemented yet\n");
5787 }
5788 
5789 template <class ELFT>
5790 void LLVMStyle<ELFT>::printStackSizeEntry(uint64_t Size, StringRef FuncName) {
5791   // FIXME: Implement this function for LLVM-style dumping.
5792 }
5793 
5794 template <class ELFT>
5795 void LLVMStyle<ELFT>::printMipsGOT(const MipsGOTParser<ELFT> &Parser) {
5796   auto PrintEntry = [&](const Elf_Addr *E) {
5797     W.printHex("Address", Parser.getGotAddress(E));
5798     W.printNumber("Access", Parser.getGotOffset(E));
5799     W.printHex("Initial", *E);
5800   };
5801 
5802   DictScope GS(W, Parser.IsStatic ? "Static GOT" : "Primary GOT");
5803 
5804   W.printHex("Canonical gp value", Parser.getGp());
5805   {
5806     ListScope RS(W, "Reserved entries");
5807     {
5808       DictScope D(W, "Entry");
5809       PrintEntry(Parser.getGotLazyResolver());
5810       W.printString("Purpose", StringRef("Lazy resolver"));
5811     }
5812 
5813     if (Parser.getGotModulePointer()) {
5814       DictScope D(W, "Entry");
5815       PrintEntry(Parser.getGotModulePointer());
5816       W.printString("Purpose", StringRef("Module pointer (GNU extension)"));
5817     }
5818   }
5819   {
5820     ListScope LS(W, "Local entries");
5821     for (auto &E : Parser.getLocalEntries()) {
5822       DictScope D(W, "Entry");
5823       PrintEntry(&E);
5824     }
5825   }
5826 
5827   if (Parser.IsStatic)
5828     return;
5829 
5830   {
5831     ListScope GS(W, "Global entries");
5832     for (auto &E : Parser.getGlobalEntries()) {
5833       DictScope D(W, "Entry");
5834 
5835       PrintEntry(&E);
5836 
5837       const Elf_Sym *Sym = Parser.getGotSym(&E);
5838       W.printHex("Value", Sym->st_value);
5839       W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes));
5840 
5841       unsigned SectionIndex = 0;
5842       StringRef SectionName;
5843       this->dumper()->getSectionNameIndex(
5844           Sym, this->dumper()->dynamic_symbols().begin(), SectionName,
5845           SectionIndex);
5846       W.printHex("Section", SectionName, SectionIndex);
5847 
5848       std::string SymName = this->dumper()->getFullSymbolName(
5849           Sym, this->dumper()->getDynamicStringTable(), true);
5850       W.printNumber("Name", SymName, Sym->st_name);
5851     }
5852   }
5853 
5854   W.printNumber("Number of TLS and multi-GOT entries",
5855                 uint64_t(Parser.getOtherEntries().size()));
5856 }
5857 
5858 template <class ELFT>
5859 void LLVMStyle<ELFT>::printMipsPLT(const MipsGOTParser<ELFT> &Parser) {
5860   auto PrintEntry = [&](const Elf_Addr *E) {
5861     W.printHex("Address", Parser.getPltAddress(E));
5862     W.printHex("Initial", *E);
5863   };
5864 
5865   DictScope GS(W, "PLT GOT");
5866 
5867   {
5868     ListScope RS(W, "Reserved entries");
5869     {
5870       DictScope D(W, "Entry");
5871       PrintEntry(Parser.getPltLazyResolver());
5872       W.printString("Purpose", StringRef("PLT lazy resolver"));
5873     }
5874 
5875     if (auto E = Parser.getPltModulePointer()) {
5876       DictScope D(W, "Entry");
5877       PrintEntry(E);
5878       W.printString("Purpose", StringRef("Module pointer"));
5879     }
5880   }
5881   {
5882     ListScope LS(W, "Entries");
5883     for (auto &E : Parser.getPltEntries()) {
5884       DictScope D(W, "Entry");
5885       PrintEntry(&E);
5886 
5887       const Elf_Sym *Sym = Parser.getPltSym(&E);
5888       W.printHex("Value", Sym->st_value);
5889       W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes));
5890 
5891       unsigned SectionIndex = 0;
5892       StringRef SectionName;
5893       this->dumper()->getSectionNameIndex(
5894           Sym, this->dumper()->dynamic_symbols().begin(), SectionName,
5895           SectionIndex);
5896       W.printHex("Section", SectionName, SectionIndex);
5897 
5898       std::string SymName =
5899           this->dumper()->getFullSymbolName(Sym, Parser.getPltStrTable(), true);
5900       W.printNumber("Name", SymName, Sym->st_name);
5901     }
5902   }
5903 }
5904