ELFDumper.cpp revision 36b56886974eae4f9c5ebc96befd3e7bfe5de338 
1//===-- ELFDumper.cpp - ELF-specific dumper ---------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9///
10/// \file
11/// \brief This file implements the ELF-specific dumper for llvm-readobj.
12///
13//===----------------------------------------------------------------------===//
14
15#include "llvm-readobj.h"
16#include "ARMAttributeParser.h"
17#include "ARMEHABIPrinter.h"
18#include "Error.h"
19#include "ObjDumper.h"
20#include "StreamWriter.h"
21#include "llvm/ADT/SmallString.h"
22#include "llvm/ADT/StringExtras.h"
23#include "llvm/Object/ELFObjectFile.h"
24#include "llvm/Support/ARMBuildAttributes.h"
25#include "llvm/Support/Compiler.h"
26#include "llvm/Support/Format.h"
27#include "llvm/Support/MathExtras.h"
28#include "llvm/Support/raw_ostream.h"
29
30using namespace llvm;
31using namespace llvm::object;
32using namespace ELF;
33
34#define LLVM_READOBJ_ENUM_CASE(ns, enum) \
35  case ns::enum: return #enum;
36
37namespace {
38
39template<typename ELFT>
40class ELFDumper : public ObjDumper {
41public:
42  ELFDumper(const ELFFile<ELFT> *Obj, StreamWriter &Writer)
43      : ObjDumper(Writer), Obj(Obj) {}
44
45  void printFileHeaders() override;
46  void printSections() override;
47  void printRelocations() override;
48  void printSymbols() override;
49  void printDynamicSymbols() override;
50  void printUnwindInfo() override;
51
52  void printDynamicTable() override;
53  void printNeededLibraries() override;
54  void printProgramHeaders() override;
55
56  void printAttributes() override;
57
58private:
59  typedef ELFFile<ELFT> ELFO;
60  typedef typename ELFO::Elf_Shdr Elf_Shdr;
61  typedef typename ELFO::Elf_Sym Elf_Sym;
62
63  void printSymbol(typename ELFO::Elf_Sym_Iter Symbol);
64
65  void printRelocations(const Elf_Shdr *Sec);
66  void printRelocation(const Elf_Shdr *Sec, typename ELFO::Elf_Rela Rel);
67
68  const ELFO *Obj;
69};
70
71template <class T> T errorOrDefault(ErrorOr<T> Val, T Default = T()) {
72  if (!Val) {
73    error(Val.getError());
74    return Default;
75  }
76
77  return *Val;
78}
79} // namespace
80
81namespace llvm {
82
83template <class ELFT>
84static error_code createELFDumper(const ELFFile<ELFT> *Obj,
85                                  StreamWriter &Writer,
86                                  std::unique_ptr<ObjDumper> &Result) {
87  Result.reset(new ELFDumper<ELFT>(Obj, Writer));
88  return readobj_error::success;
89}
90
91error_code createELFDumper(const object::ObjectFile *Obj, StreamWriter &Writer,
92                           std::unique_ptr<ObjDumper> &Result) {
93  // Little-endian 32-bit
94  if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
95    return createELFDumper(ELFObj->getELFFile(), Writer, Result);
96
97  // Big-endian 32-bit
98  if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
99    return createELFDumper(ELFObj->getELFFile(), Writer, Result);
100
101  // Little-endian 64-bit
102  if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
103    return createELFDumper(ELFObj->getELFFile(), Writer, Result);
104
105  // Big-endian 64-bit
106  if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
107    return createELFDumper(ELFObj->getELFFile(), Writer, Result);
108
109  return readobj_error::unsupported_obj_file_format;
110}
111
112} // namespace llvm
113
114static const EnumEntry<unsigned> ElfClass[] = {
115  { "None",   ELF::ELFCLASSNONE },
116  { "32-bit", ELF::ELFCLASS32   },
117  { "64-bit", ELF::ELFCLASS64   },
118};
119
120static const EnumEntry<unsigned> ElfDataEncoding[] = {
121  { "None",         ELF::ELFDATANONE },
122  { "LittleEndian", ELF::ELFDATA2LSB },
123  { "BigEndian",    ELF::ELFDATA2MSB },
124};
125
126static const EnumEntry<unsigned> ElfObjectFileType[] = {
127  { "None",         ELF::ET_NONE },
128  { "Relocatable",  ELF::ET_REL  },
129  { "Executable",   ELF::ET_EXEC },
130  { "SharedObject", ELF::ET_DYN  },
131  { "Core",         ELF::ET_CORE },
132};
133
134static const EnumEntry<unsigned> ElfOSABI[] = {
135  { "SystemV",      ELF::ELFOSABI_NONE         },
136  { "HPUX",         ELF::ELFOSABI_HPUX         },
137  { "NetBSD",       ELF::ELFOSABI_NETBSD       },
138  { "GNU/Linux",    ELF::ELFOSABI_LINUX        },
139  { "GNU/Hurd",     ELF::ELFOSABI_HURD         },
140  { "Solaris",      ELF::ELFOSABI_SOLARIS      },
141  { "AIX",          ELF::ELFOSABI_AIX          },
142  { "IRIX",         ELF::ELFOSABI_IRIX         },
143  { "FreeBSD",      ELF::ELFOSABI_FREEBSD      },
144  { "TRU64",        ELF::ELFOSABI_TRU64        },
145  { "Modesto",      ELF::ELFOSABI_MODESTO      },
146  { "OpenBSD",      ELF::ELFOSABI_OPENBSD      },
147  { "OpenVMS",      ELF::ELFOSABI_OPENVMS      },
148  { "NSK",          ELF::ELFOSABI_NSK          },
149  { "AROS",         ELF::ELFOSABI_AROS         },
150  { "FenixOS",      ELF::ELFOSABI_FENIXOS      },
151  { "C6000_ELFABI", ELF::ELFOSABI_C6000_ELFABI },
152  { "C6000_LINUX" , ELF::ELFOSABI_C6000_LINUX  },
153  { "ARM",          ELF::ELFOSABI_ARM          },
154  { "Standalone"  , ELF::ELFOSABI_STANDALONE   }
155};
156
157static const EnumEntry<unsigned> ElfMachineType[] = {
158  LLVM_READOBJ_ENUM_ENT(ELF, EM_NONE         ),
159  LLVM_READOBJ_ENUM_ENT(ELF, EM_M32          ),
160  LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARC        ),
161  LLVM_READOBJ_ENUM_ENT(ELF, EM_386          ),
162  LLVM_READOBJ_ENUM_ENT(ELF, EM_68K          ),
163  LLVM_READOBJ_ENUM_ENT(ELF, EM_88K          ),
164  LLVM_READOBJ_ENUM_ENT(ELF, EM_486          ),
165  LLVM_READOBJ_ENUM_ENT(ELF, EM_860          ),
166  LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS         ),
167  LLVM_READOBJ_ENUM_ENT(ELF, EM_S370         ),
168  LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS_RS3_LE  ),
169  LLVM_READOBJ_ENUM_ENT(ELF, EM_PARISC       ),
170  LLVM_READOBJ_ENUM_ENT(ELF, EM_VPP500       ),
171  LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARC32PLUS  ),
172  LLVM_READOBJ_ENUM_ENT(ELF, EM_960          ),
173  LLVM_READOBJ_ENUM_ENT(ELF, EM_PPC          ),
174  LLVM_READOBJ_ENUM_ENT(ELF, EM_PPC64        ),
175  LLVM_READOBJ_ENUM_ENT(ELF, EM_S390         ),
176  LLVM_READOBJ_ENUM_ENT(ELF, EM_SPU          ),
177  LLVM_READOBJ_ENUM_ENT(ELF, EM_V800         ),
178  LLVM_READOBJ_ENUM_ENT(ELF, EM_FR20         ),
179  LLVM_READOBJ_ENUM_ENT(ELF, EM_RH32         ),
180  LLVM_READOBJ_ENUM_ENT(ELF, EM_RCE          ),
181  LLVM_READOBJ_ENUM_ENT(ELF, EM_ARM          ),
182  LLVM_READOBJ_ENUM_ENT(ELF, EM_ALPHA        ),
183  LLVM_READOBJ_ENUM_ENT(ELF, EM_SH           ),
184  LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARCV9      ),
185  LLVM_READOBJ_ENUM_ENT(ELF, EM_TRICORE      ),
186  LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC          ),
187  LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_300       ),
188  LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_300H      ),
189  LLVM_READOBJ_ENUM_ENT(ELF, EM_H8S          ),
190  LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_500       ),
191  LLVM_READOBJ_ENUM_ENT(ELF, EM_IA_64        ),
192  LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS_X       ),
193  LLVM_READOBJ_ENUM_ENT(ELF, EM_COLDFIRE     ),
194  LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC12       ),
195  LLVM_READOBJ_ENUM_ENT(ELF, EM_MMA          ),
196  LLVM_READOBJ_ENUM_ENT(ELF, EM_PCP          ),
197  LLVM_READOBJ_ENUM_ENT(ELF, EM_NCPU         ),
198  LLVM_READOBJ_ENUM_ENT(ELF, EM_NDR1         ),
199  LLVM_READOBJ_ENUM_ENT(ELF, EM_STARCORE     ),
200  LLVM_READOBJ_ENUM_ENT(ELF, EM_ME16         ),
201  LLVM_READOBJ_ENUM_ENT(ELF, EM_ST100        ),
202  LLVM_READOBJ_ENUM_ENT(ELF, EM_TINYJ        ),
203  LLVM_READOBJ_ENUM_ENT(ELF, EM_X86_64       ),
204  LLVM_READOBJ_ENUM_ENT(ELF, EM_PDSP         ),
205  LLVM_READOBJ_ENUM_ENT(ELF, EM_PDP10        ),
206  LLVM_READOBJ_ENUM_ENT(ELF, EM_PDP11        ),
207  LLVM_READOBJ_ENUM_ENT(ELF, EM_FX66         ),
208  LLVM_READOBJ_ENUM_ENT(ELF, EM_ST9PLUS      ),
209  LLVM_READOBJ_ENUM_ENT(ELF, EM_ST7          ),
210  LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC16       ),
211  LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC11       ),
212  LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC08       ),
213  LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC05       ),
214  LLVM_READOBJ_ENUM_ENT(ELF, EM_SVX          ),
215  LLVM_READOBJ_ENUM_ENT(ELF, EM_ST19         ),
216  LLVM_READOBJ_ENUM_ENT(ELF, EM_VAX          ),
217  LLVM_READOBJ_ENUM_ENT(ELF, EM_CRIS         ),
218  LLVM_READOBJ_ENUM_ENT(ELF, EM_JAVELIN      ),
219  LLVM_READOBJ_ENUM_ENT(ELF, EM_FIREPATH     ),
220  LLVM_READOBJ_ENUM_ENT(ELF, EM_ZSP          ),
221  LLVM_READOBJ_ENUM_ENT(ELF, EM_MMIX         ),
222  LLVM_READOBJ_ENUM_ENT(ELF, EM_HUANY        ),
223  LLVM_READOBJ_ENUM_ENT(ELF, EM_PRISM        ),
224  LLVM_READOBJ_ENUM_ENT(ELF, EM_AVR          ),
225  LLVM_READOBJ_ENUM_ENT(ELF, EM_FR30         ),
226  LLVM_READOBJ_ENUM_ENT(ELF, EM_D10V         ),
227  LLVM_READOBJ_ENUM_ENT(ELF, EM_D30V         ),
228  LLVM_READOBJ_ENUM_ENT(ELF, EM_V850         ),
229  LLVM_READOBJ_ENUM_ENT(ELF, EM_M32R         ),
230  LLVM_READOBJ_ENUM_ENT(ELF, EM_MN10300      ),
231  LLVM_READOBJ_ENUM_ENT(ELF, EM_MN10200      ),
232  LLVM_READOBJ_ENUM_ENT(ELF, EM_PJ           ),
233  LLVM_READOBJ_ENUM_ENT(ELF, EM_OPENRISC     ),
234  LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC_COMPACT  ),
235  LLVM_READOBJ_ENUM_ENT(ELF, EM_XTENSA       ),
236  LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE    ),
237  LLVM_READOBJ_ENUM_ENT(ELF, EM_TMM_GPP      ),
238  LLVM_READOBJ_ENUM_ENT(ELF, EM_NS32K        ),
239  LLVM_READOBJ_ENUM_ENT(ELF, EM_TPC          ),
240  LLVM_READOBJ_ENUM_ENT(ELF, EM_SNP1K        ),
241  LLVM_READOBJ_ENUM_ENT(ELF, EM_ST200        ),
242  LLVM_READOBJ_ENUM_ENT(ELF, EM_IP2K         ),
243  LLVM_READOBJ_ENUM_ENT(ELF, EM_MAX          ),
244  LLVM_READOBJ_ENUM_ENT(ELF, EM_CR           ),
245  LLVM_READOBJ_ENUM_ENT(ELF, EM_F2MC16       ),
246  LLVM_READOBJ_ENUM_ENT(ELF, EM_MSP430       ),
247  LLVM_READOBJ_ENUM_ENT(ELF, EM_BLACKFIN     ),
248  LLVM_READOBJ_ENUM_ENT(ELF, EM_SE_C33       ),
249  LLVM_READOBJ_ENUM_ENT(ELF, EM_SEP          ),
250  LLVM_READOBJ_ENUM_ENT(ELF, EM_ARCA         ),
251  LLVM_READOBJ_ENUM_ENT(ELF, EM_UNICORE      ),
252  LLVM_READOBJ_ENUM_ENT(ELF, EM_EXCESS       ),
253  LLVM_READOBJ_ENUM_ENT(ELF, EM_DXP          ),
254  LLVM_READOBJ_ENUM_ENT(ELF, EM_ALTERA_NIOS2 ),
255  LLVM_READOBJ_ENUM_ENT(ELF, EM_CRX          ),
256  LLVM_READOBJ_ENUM_ENT(ELF, EM_XGATE        ),
257  LLVM_READOBJ_ENUM_ENT(ELF, EM_C166         ),
258  LLVM_READOBJ_ENUM_ENT(ELF, EM_M16C         ),
259  LLVM_READOBJ_ENUM_ENT(ELF, EM_DSPIC30F     ),
260  LLVM_READOBJ_ENUM_ENT(ELF, EM_CE           ),
261  LLVM_READOBJ_ENUM_ENT(ELF, EM_M32C         ),
262  LLVM_READOBJ_ENUM_ENT(ELF, EM_TSK3000      ),
263  LLVM_READOBJ_ENUM_ENT(ELF, EM_RS08         ),
264  LLVM_READOBJ_ENUM_ENT(ELF, EM_SHARC        ),
265  LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG2        ),
266  LLVM_READOBJ_ENUM_ENT(ELF, EM_SCORE7       ),
267  LLVM_READOBJ_ENUM_ENT(ELF, EM_DSP24        ),
268  LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE3   ),
269  LLVM_READOBJ_ENUM_ENT(ELF, EM_LATTICEMICO32),
270  LLVM_READOBJ_ENUM_ENT(ELF, EM_SE_C17       ),
271  LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C6000     ),
272  LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C2000     ),
273  LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C5500     ),
274  LLVM_READOBJ_ENUM_ENT(ELF, EM_MMDSP_PLUS   ),
275  LLVM_READOBJ_ENUM_ENT(ELF, EM_CYPRESS_M8C  ),
276  LLVM_READOBJ_ENUM_ENT(ELF, EM_R32C         ),
277  LLVM_READOBJ_ENUM_ENT(ELF, EM_TRIMEDIA     ),
278  LLVM_READOBJ_ENUM_ENT(ELF, EM_HEXAGON      ),
279  LLVM_READOBJ_ENUM_ENT(ELF, EM_8051         ),
280  LLVM_READOBJ_ENUM_ENT(ELF, EM_STXP7X       ),
281  LLVM_READOBJ_ENUM_ENT(ELF, EM_NDS32        ),
282  LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG1        ),
283  LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG1X       ),
284  LLVM_READOBJ_ENUM_ENT(ELF, EM_MAXQ30       ),
285  LLVM_READOBJ_ENUM_ENT(ELF, EM_XIMO16       ),
286  LLVM_READOBJ_ENUM_ENT(ELF, EM_MANIK        ),
287  LLVM_READOBJ_ENUM_ENT(ELF, EM_CRAYNV2      ),
288  LLVM_READOBJ_ENUM_ENT(ELF, EM_RX           ),
289  LLVM_READOBJ_ENUM_ENT(ELF, EM_METAG        ),
290  LLVM_READOBJ_ENUM_ENT(ELF, EM_MCST_ELBRUS  ),
291  LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG16       ),
292  LLVM_READOBJ_ENUM_ENT(ELF, EM_CR16         ),
293  LLVM_READOBJ_ENUM_ENT(ELF, EM_ETPU         ),
294  LLVM_READOBJ_ENUM_ENT(ELF, EM_SLE9X        ),
295  LLVM_READOBJ_ENUM_ENT(ELF, EM_L10M         ),
296  LLVM_READOBJ_ENUM_ENT(ELF, EM_K10M         ),
297  LLVM_READOBJ_ENUM_ENT(ELF, EM_AARCH64      ),
298  LLVM_READOBJ_ENUM_ENT(ELF, EM_AVR32        ),
299  LLVM_READOBJ_ENUM_ENT(ELF, EM_STM8         ),
300  LLVM_READOBJ_ENUM_ENT(ELF, EM_TILE64       ),
301  LLVM_READOBJ_ENUM_ENT(ELF, EM_TILEPRO      ),
302  LLVM_READOBJ_ENUM_ENT(ELF, EM_CUDA         ),
303  LLVM_READOBJ_ENUM_ENT(ELF, EM_TILEGX       ),
304  LLVM_READOBJ_ENUM_ENT(ELF, EM_CLOUDSHIELD  ),
305  LLVM_READOBJ_ENUM_ENT(ELF, EM_COREA_1ST    ),
306  LLVM_READOBJ_ENUM_ENT(ELF, EM_COREA_2ND    ),
307  LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC_COMPACT2 ),
308  LLVM_READOBJ_ENUM_ENT(ELF, EM_OPEN8        ),
309  LLVM_READOBJ_ENUM_ENT(ELF, EM_RL78         ),
310  LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE5   ),
311  LLVM_READOBJ_ENUM_ENT(ELF, EM_78KOR        ),
312  LLVM_READOBJ_ENUM_ENT(ELF, EM_56800EX      )
313};
314
315static const EnumEntry<unsigned> ElfSymbolBindings[] = {
316  { "Local",  ELF::STB_LOCAL  },
317  { "Global", ELF::STB_GLOBAL },
318  { "Weak",   ELF::STB_WEAK   }
319};
320
321static const EnumEntry<unsigned> ElfSymbolTypes[] = {
322  { "None",      ELF::STT_NOTYPE    },
323  { "Object",    ELF::STT_OBJECT    },
324  { "Function",  ELF::STT_FUNC      },
325  { "Section",   ELF::STT_SECTION   },
326  { "File",      ELF::STT_FILE      },
327  { "Common",    ELF::STT_COMMON    },
328  { "TLS",       ELF::STT_TLS       },
329  { "GNU_IFunc", ELF::STT_GNU_IFUNC }
330};
331
332static const char *getElfSectionType(unsigned Arch, unsigned Type) {
333  switch (Arch) {
334  case ELF::EM_ARM:
335    switch (Type) {
336    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_EXIDX);
337    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_PREEMPTMAP);
338    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_ATTRIBUTES);
339    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_DEBUGOVERLAY);
340    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_OVERLAYSECTION);
341    }
342  case ELF::EM_HEXAGON:
343    switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_HEX_ORDERED); }
344  case ELF::EM_X86_64:
345    switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_X86_64_UNWIND); }
346  case ELF::EM_MIPS:
347  case ELF::EM_MIPS_RS3_LE:
348    switch (Type) {
349    LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_REGINFO);
350    LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_OPTIONS);
351    }
352  }
353
354  switch (Type) {
355  LLVM_READOBJ_ENUM_CASE(ELF, SHT_NULL              );
356  LLVM_READOBJ_ENUM_CASE(ELF, SHT_PROGBITS          );
357  LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB            );
358  LLVM_READOBJ_ENUM_CASE(ELF, SHT_STRTAB            );
359  LLVM_READOBJ_ENUM_CASE(ELF, SHT_RELA              );
360  LLVM_READOBJ_ENUM_CASE(ELF, SHT_HASH              );
361  LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNAMIC           );
362  LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOTE              );
363  LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOBITS            );
364  LLVM_READOBJ_ENUM_CASE(ELF, SHT_REL               );
365  LLVM_READOBJ_ENUM_CASE(ELF, SHT_SHLIB             );
366  LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNSYM            );
367  LLVM_READOBJ_ENUM_CASE(ELF, SHT_INIT_ARRAY        );
368  LLVM_READOBJ_ENUM_CASE(ELF, SHT_FINI_ARRAY        );
369  LLVM_READOBJ_ENUM_CASE(ELF, SHT_PREINIT_ARRAY     );
370  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GROUP             );
371  LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB_SHNDX      );
372  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_ATTRIBUTES    );
373  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_HASH          );
374  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verdef        );
375  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verneed       );
376  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_versym        );
377  default: return "";
378  }
379}
380
381static const EnumEntry<unsigned> ElfSectionFlags[] = {
382  LLVM_READOBJ_ENUM_ENT(ELF, SHF_WRITE           ),
383  LLVM_READOBJ_ENUM_ENT(ELF, SHF_ALLOC           ),
384  LLVM_READOBJ_ENUM_ENT(ELF, SHF_EXCLUDE         ),
385  LLVM_READOBJ_ENUM_ENT(ELF, SHF_EXECINSTR       ),
386  LLVM_READOBJ_ENUM_ENT(ELF, SHF_MERGE           ),
387  LLVM_READOBJ_ENUM_ENT(ELF, SHF_STRINGS         ),
388  LLVM_READOBJ_ENUM_ENT(ELF, SHF_INFO_LINK       ),
389  LLVM_READOBJ_ENUM_ENT(ELF, SHF_LINK_ORDER      ),
390  LLVM_READOBJ_ENUM_ENT(ELF, SHF_OS_NONCONFORMING),
391  LLVM_READOBJ_ENUM_ENT(ELF, SHF_GROUP           ),
392  LLVM_READOBJ_ENUM_ENT(ELF, SHF_TLS             ),
393  LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_CP_SECTION),
394  LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_DP_SECTION),
395  LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP    )
396};
397
398static const char *getElfSegmentType(unsigned Arch, unsigned Type) {
399  // Check potentially overlapped processor-specific
400  // program header type.
401  switch (Arch) {
402  case ELF::EM_ARM:
403    switch (Type) {
404    LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX);
405    }
406  case ELF::EM_MIPS:
407  case ELF::EM_MIPS_RS3_LE:
408    switch (Type) {
409    LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO);
410    LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC);
411    LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS);
412    }
413  }
414
415  switch (Type) {
416  LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL   );
417  LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD   );
418  LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC);
419  LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP );
420  LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE   );
421  LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB  );
422  LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR   );
423  LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS    );
424
425  LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME);
426  LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND);
427
428  LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK);
429  LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO);
430  default: return "";
431  }
432}
433
434static const EnumEntry<unsigned> ElfSegmentFlags[] = {
435  LLVM_READOBJ_ENUM_ENT(ELF, PF_X),
436  LLVM_READOBJ_ENUM_ENT(ELF, PF_W),
437  LLVM_READOBJ_ENUM_ENT(ELF, PF_R)
438};
439
440template<class ELFT>
441void ELFDumper<ELFT>::printFileHeaders() {
442  const typename ELFO::Elf_Ehdr *Header = Obj->getHeader();
443
444  {
445    DictScope D(W, "ElfHeader");
446    {
447      DictScope D(W, "Ident");
448      W.printBinary("Magic", makeArrayRef(Header->e_ident).slice(ELF::EI_MAG0,
449                                                                 4));
450      W.printEnum  ("Class", Header->e_ident[ELF::EI_CLASS],
451                      makeArrayRef(ElfClass));
452      W.printEnum  ("DataEncoding", Header->e_ident[ELF::EI_DATA],
453                      makeArrayRef(ElfDataEncoding));
454      W.printNumber("FileVersion", Header->e_ident[ELF::EI_VERSION]);
455      W.printEnum  ("OS/ABI", Header->e_ident[ELF::EI_OSABI],
456                      makeArrayRef(ElfOSABI));
457      W.printNumber("ABIVersion", Header->e_ident[ELF::EI_ABIVERSION]);
458      W.printBinary("Unused", makeArrayRef(Header->e_ident).slice(ELF::EI_PAD));
459    }
460
461    W.printEnum  ("Type", Header->e_type, makeArrayRef(ElfObjectFileType));
462    W.printEnum  ("Machine", Header->e_machine, makeArrayRef(ElfMachineType));
463    W.printNumber("Version", Header->e_version);
464    W.printHex   ("Entry", Header->e_entry);
465    W.printHex   ("ProgramHeaderOffset", Header->e_phoff);
466    W.printHex   ("SectionHeaderOffset", Header->e_shoff);
467    W.printFlags ("Flags", Header->e_flags);
468    W.printNumber("HeaderSize", Header->e_ehsize);
469    W.printNumber("ProgramHeaderEntrySize", Header->e_phentsize);
470    W.printNumber("ProgramHeaderCount", Header->e_phnum);
471    W.printNumber("SectionHeaderEntrySize", Header->e_shentsize);
472    W.printNumber("SectionHeaderCount", Header->e_shnum);
473    W.printNumber("StringTableSectionIndex", Header->e_shstrndx);
474  }
475}
476
477template<class ELFT>
478void ELFDumper<ELFT>::printSections() {
479  ListScope SectionsD(W, "Sections");
480
481  int SectionIndex = -1;
482  for (typename ELFO::Elf_Shdr_Iter SecI = Obj->begin_sections(),
483                                    SecE = Obj->end_sections();
484       SecI != SecE; ++SecI) {
485    ++SectionIndex;
486
487    const Elf_Shdr *Section = &*SecI;
488    StringRef Name = errorOrDefault(Obj->getSectionName(Section));
489
490    DictScope SectionD(W, "Section");
491    W.printNumber("Index", SectionIndex);
492    W.printNumber("Name", Name, Section->sh_name);
493    W.printHex("Type",
494               getElfSectionType(Obj->getHeader()->e_machine, Section->sh_type),
495               Section->sh_type);
496    W.printFlags ("Flags", Section->sh_flags, makeArrayRef(ElfSectionFlags));
497    W.printHex   ("Address", Section->sh_addr);
498    W.printHex   ("Offset", Section->sh_offset);
499    W.printNumber("Size", Section->sh_size);
500    W.printNumber("Link", Section->sh_link);
501    W.printNumber("Info", Section->sh_info);
502    W.printNumber("AddressAlignment", Section->sh_addralign);
503    W.printNumber("EntrySize", Section->sh_entsize);
504
505    if (opts::SectionRelocations) {
506      ListScope D(W, "Relocations");
507      printRelocations(Section);
508    }
509
510    if (opts::SectionSymbols) {
511      ListScope D(W, "Symbols");
512      for (typename ELFO::Elf_Sym_Iter SymI = Obj->begin_symbols(),
513                                       SymE = Obj->end_symbols();
514           SymI != SymE; ++SymI) {
515        if (Obj->getSection(&*SymI) == Section)
516          printSymbol(SymI);
517      }
518    }
519
520    if (opts::SectionData) {
521      ArrayRef<uint8_t> Data = errorOrDefault(Obj->getSectionContents(Section));
522      W.printBinaryBlock("SectionData",
523                         StringRef((const char *)Data.data(), Data.size()));
524    }
525  }
526}
527
528template<class ELFT>
529void ELFDumper<ELFT>::printRelocations() {
530  ListScope D(W, "Relocations");
531
532  int SectionNumber = -1;
533  for (typename ELFO::Elf_Shdr_Iter SecI = Obj->begin_sections(),
534                                    SecE = Obj->end_sections();
535       SecI != SecE; ++SecI) {
536    ++SectionNumber;
537
538    if (SecI->sh_type != ELF::SHT_REL && SecI->sh_type != ELF::SHT_RELA)
539      continue;
540
541    StringRef Name = errorOrDefault(Obj->getSectionName(&*SecI));
542
543    W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n";
544    W.indent();
545
546    printRelocations(&*SecI);
547
548    W.unindent();
549    W.startLine() << "}\n";
550  }
551}
552
553template <class ELFT>
554void ELFDumper<ELFT>::printRelocations(const Elf_Shdr *Sec) {
555  switch (Sec->sh_type) {
556  case ELF::SHT_REL:
557    for (typename ELFO::Elf_Rel_Iter RI = Obj->begin_rel(Sec),
558                                     RE = Obj->end_rel(Sec);
559         RI != RE; ++RI) {
560      typename ELFO::Elf_Rela Rela;
561      Rela.r_offset = RI->r_offset;
562      Rela.r_info = RI->r_info;
563      Rela.r_addend = 0;
564      printRelocation(Sec, Rela);
565    }
566    break;
567  case ELF::SHT_RELA:
568    for (typename ELFO::Elf_Rela_Iter RI = Obj->begin_rela(Sec),
569                                      RE = Obj->end_rela(Sec);
570         RI != RE; ++RI) {
571      printRelocation(Sec, *RI);
572    }
573    break;
574  }
575}
576
577template <class ELFT>
578void ELFDumper<ELFT>::printRelocation(const Elf_Shdr *Sec,
579                                      typename ELFO::Elf_Rela Rel) {
580  SmallString<32> RelocName;
581  Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName);
582  StringRef SymbolName;
583  std::pair<const Elf_Shdr *, const Elf_Sym *> Sym =
584      Obj->getRelocationSymbol(Sec, &Rel);
585  if (Sym.first)
586    SymbolName = errorOrDefault(Obj->getSymbolName(Sym.first, Sym.second));
587
588  if (opts::ExpandRelocs) {
589    DictScope Group(W, "Relocation");
590    W.printHex("Offset", Rel.r_offset);
591    W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL()));
592    W.printString("Symbol", SymbolName.size() > 0 ? SymbolName : "-");
593    W.printHex("Addend", Rel.r_addend);
594  } else {
595    raw_ostream& OS = W.startLine();
596    OS << W.hex(Rel.r_offset)
597       << " " << RelocName
598       << " " << (SymbolName.size() > 0 ? SymbolName : "-")
599       << " " << W.hex(Rel.r_addend)
600       << "\n";
601  }
602}
603
604template<class ELFT>
605void ELFDumper<ELFT>::printSymbols() {
606  ListScope Group(W, "Symbols");
607  for (typename ELFO::Elf_Sym_Iter SymI = Obj->begin_symbols(),
608                                   SymE = Obj->end_symbols();
609       SymI != SymE; ++SymI) {
610    printSymbol(SymI);
611  }
612}
613
614template<class ELFT>
615void ELFDumper<ELFT>::printDynamicSymbols() {
616  ListScope Group(W, "DynamicSymbols");
617
618  for (typename ELFO::Elf_Sym_Iter SymI = Obj->begin_dynamic_symbols(),
619                                   SymE = Obj->end_dynamic_symbols();
620       SymI != SymE; ++SymI) {
621    printSymbol(SymI);
622  }
623}
624
625template <class ELFT>
626void ELFDumper<ELFT>::printSymbol(typename ELFO::Elf_Sym_Iter Symbol) {
627  StringRef SymbolName = errorOrDefault(Obj->getSymbolName(Symbol));
628
629  unsigned SectionIndex = Symbol->st_shndx;
630  StringRef SectionName;
631  if (SectionIndex == SHN_UNDEF) {
632    SectionName = "Undefined";
633  } else if (SectionIndex >= SHN_LOPROC && SectionIndex <= SHN_HIPROC) {
634    SectionName = "Processor Specific";
635  } else if (SectionIndex >= SHN_LOOS && SectionIndex <= SHN_HIOS) {
636    SectionName = "Operating System Specific";
637  } else if (SectionIndex > SHN_HIOS && SectionIndex < SHN_ABS) {
638    SectionName = "Reserved";
639  } else if (SectionIndex == SHN_ABS) {
640    SectionName = "Absolute";
641  } else if (SectionIndex == SHN_COMMON) {
642    SectionName = "Common";
643  } else {
644    if (SectionIndex == SHN_XINDEX)
645      SectionIndex = Obj->getSymbolTableIndex(&*Symbol);
646    assert(SectionIndex != SHN_XINDEX &&
647           "getSymbolTableIndex should handle this");
648    const Elf_Shdr *Sec = Obj->getSection(SectionIndex);
649    SectionName = errorOrDefault(Obj->getSectionName(Sec));
650  }
651
652  std::string FullSymbolName(SymbolName);
653  if (Symbol.isDynamic()) {
654    bool IsDefault;
655    ErrorOr<StringRef> Version = Obj->getSymbolVersion(0, &*Symbol, IsDefault);
656    if (Version) {
657      FullSymbolName += (IsDefault ? "@@" : "@");
658      FullSymbolName += *Version;
659    } else
660      error(Version.getError());
661  }
662
663  DictScope D(W, "Symbol");
664  W.printNumber("Name", FullSymbolName, Symbol->st_name);
665  W.printHex   ("Value", Symbol->st_value);
666  W.printNumber("Size", Symbol->st_size);
667  W.printEnum  ("Binding", Symbol->getBinding(),
668                  makeArrayRef(ElfSymbolBindings));
669  W.printEnum  ("Type", Symbol->getType(), makeArrayRef(ElfSymbolTypes));
670  W.printNumber("Other", Symbol->st_other);
671  W.printHex("Section", SectionName, SectionIndex);
672}
673
674#define LLVM_READOBJ_TYPE_CASE(name) \
675  case DT_##name: return #name
676
677static const char *getTypeString(uint64_t Type) {
678  switch (Type) {
679  LLVM_READOBJ_TYPE_CASE(BIND_NOW);
680  LLVM_READOBJ_TYPE_CASE(DEBUG);
681  LLVM_READOBJ_TYPE_CASE(FINI);
682  LLVM_READOBJ_TYPE_CASE(FINI_ARRAY);
683  LLVM_READOBJ_TYPE_CASE(FINI_ARRAYSZ);
684  LLVM_READOBJ_TYPE_CASE(FLAGS);
685  LLVM_READOBJ_TYPE_CASE(HASH);
686  LLVM_READOBJ_TYPE_CASE(INIT);
687  LLVM_READOBJ_TYPE_CASE(INIT_ARRAY);
688  LLVM_READOBJ_TYPE_CASE(INIT_ARRAYSZ);
689  LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAY);
690  LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAYSZ);
691  LLVM_READOBJ_TYPE_CASE(JMPREL);
692  LLVM_READOBJ_TYPE_CASE(NEEDED);
693  LLVM_READOBJ_TYPE_CASE(NULL);
694  LLVM_READOBJ_TYPE_CASE(PLTGOT);
695  LLVM_READOBJ_TYPE_CASE(PLTREL);
696  LLVM_READOBJ_TYPE_CASE(PLTRELSZ);
697  LLVM_READOBJ_TYPE_CASE(REL);
698  LLVM_READOBJ_TYPE_CASE(RELA);
699  LLVM_READOBJ_TYPE_CASE(RELENT);
700  LLVM_READOBJ_TYPE_CASE(RELSZ);
701  LLVM_READOBJ_TYPE_CASE(RELAENT);
702  LLVM_READOBJ_TYPE_CASE(RELASZ);
703  LLVM_READOBJ_TYPE_CASE(RPATH);
704  LLVM_READOBJ_TYPE_CASE(RUNPATH);
705  LLVM_READOBJ_TYPE_CASE(SONAME);
706  LLVM_READOBJ_TYPE_CASE(STRSZ);
707  LLVM_READOBJ_TYPE_CASE(STRTAB);
708  LLVM_READOBJ_TYPE_CASE(SYMBOLIC);
709  LLVM_READOBJ_TYPE_CASE(SYMENT);
710  LLVM_READOBJ_TYPE_CASE(SYMTAB);
711  LLVM_READOBJ_TYPE_CASE(TEXTREL);
712  LLVM_READOBJ_TYPE_CASE(VERNEED);
713  LLVM_READOBJ_TYPE_CASE(VERNEEDNUM);
714  LLVM_READOBJ_TYPE_CASE(VERSYM);
715  LLVM_READOBJ_TYPE_CASE(MIPS_RLD_VERSION);
716  LLVM_READOBJ_TYPE_CASE(MIPS_FLAGS);
717  LLVM_READOBJ_TYPE_CASE(MIPS_BASE_ADDRESS);
718  LLVM_READOBJ_TYPE_CASE(MIPS_LOCAL_GOTNO);
719  LLVM_READOBJ_TYPE_CASE(MIPS_SYMTABNO);
720  LLVM_READOBJ_TYPE_CASE(MIPS_UNREFEXTNO);
721  LLVM_READOBJ_TYPE_CASE(MIPS_GOTSYM);
722  LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP);
723  LLVM_READOBJ_TYPE_CASE(MIPS_PLTGOT);
724  default: return "unknown";
725  }
726}
727
728#undef LLVM_READOBJ_TYPE_CASE
729
730template <class ELFT>
731static void printValue(const ELFFile<ELFT> *O, uint64_t Type, uint64_t Value,
732                       bool Is64, raw_ostream &OS) {
733  switch (Type) {
734  case DT_PLTREL:
735    if (Value == DT_REL) {
736      OS << "REL";
737      break;
738    } else if (Value == DT_RELA) {
739      OS << "RELA";
740      break;
741    }
742  // Fallthrough.
743  case DT_PLTGOT:
744  case DT_HASH:
745  case DT_STRTAB:
746  case DT_SYMTAB:
747  case DT_RELA:
748  case DT_INIT:
749  case DT_FINI:
750  case DT_REL:
751  case DT_JMPREL:
752  case DT_INIT_ARRAY:
753  case DT_FINI_ARRAY:
754  case DT_PREINIT_ARRAY:
755  case DT_DEBUG:
756  case DT_VERNEED:
757  case DT_VERSYM:
758  case DT_NULL:
759  case DT_MIPS_FLAGS:
760  case DT_MIPS_BASE_ADDRESS:
761  case DT_MIPS_GOTSYM:
762  case DT_MIPS_RLD_MAP:
763  case DT_MIPS_PLTGOT:
764    OS << format("0x%" PRIX64, Value);
765    break;
766  case DT_VERNEEDNUM:
767  case DT_MIPS_RLD_VERSION:
768  case DT_MIPS_LOCAL_GOTNO:
769  case DT_MIPS_SYMTABNO:
770  case DT_MIPS_UNREFEXTNO:
771    OS << Value;
772    break;
773  case DT_PLTRELSZ:
774  case DT_RELASZ:
775  case DT_RELAENT:
776  case DT_STRSZ:
777  case DT_SYMENT:
778  case DT_RELSZ:
779  case DT_RELENT:
780  case DT_INIT_ARRAYSZ:
781  case DT_FINI_ARRAYSZ:
782  case DT_PREINIT_ARRAYSZ:
783    OS << Value << " (bytes)";
784    break;
785  case DT_NEEDED:
786    OS << "SharedLibrary (" << O->getDynamicString(Value) << ")";
787    break;
788  case DT_SONAME:
789    OS << "LibrarySoname (" << O->getDynamicString(Value) << ")";
790    break;
791  case DT_RPATH:
792  case DT_RUNPATH:
793    OS << O->getDynamicString(Value);
794    break;
795  }
796}
797
798template<class ELFT>
799void ELFDumper<ELFT>::printUnwindInfo() {
800  W.startLine() << "UnwindInfo not implemented.\n";
801}
802
803namespace {
804template <>
805void ELFDumper<ELFType<support::little, 2, false> >::printUnwindInfo() {
806  const unsigned Machine = Obj->getHeader()->e_machine;
807  if (Machine == EM_ARM) {
808    ARM::EHABI::PrinterContext<ELFType<support::little, 2, false> > Ctx(W, Obj);
809    return Ctx.PrintUnwindInformation();
810  }
811  W.startLine() << "UnwindInfo not implemented.\n";
812}
813}
814
815template<class ELFT>
816void ELFDumper<ELFT>::printDynamicTable() {
817  typedef typename ELFO::Elf_Dyn_Iter EDI;
818  EDI Start = Obj->begin_dynamic_table(), End = Obj->end_dynamic_table(true);
819
820  if (Start == End)
821    return;
822
823  ptrdiff_t Total = std::distance(Start, End);
824  raw_ostream &OS = W.getOStream();
825  W.startLine() << "DynamicSection [ (" << Total << " entries)\n";
826
827  bool Is64 = ELFT::Is64Bits;
828
829  W.startLine()
830     << "  Tag" << (Is64 ? "                " : "        ") << "Type"
831     << "                 " << "Name/Value\n";
832  for (; Start != End; ++Start) {
833    W.startLine()
834       << "  "
835       << format(Is64 ? "0x%016" PRIX64 : "0x%08" PRIX64, Start->getTag())
836       << " " << format("%-21s", getTypeString(Start->getTag()));
837    printValue(Obj, Start->getTag(), Start->getVal(), Is64, OS);
838    OS << "\n";
839  }
840
841  W.startLine() << "]\n";
842}
843
844template<class ELFT>
845void ELFDumper<ELFT>::printNeededLibraries() {
846  ListScope D(W, "NeededLibraries");
847
848  typedef std::vector<StringRef> LibsTy;
849  LibsTy Libs;
850
851  for (typename ELFO::Elf_Dyn_Iter DynI = Obj->begin_dynamic_table(),
852                                   DynE = Obj->end_dynamic_table();
853       DynI != DynE; ++DynI)
854    if (DynI->d_tag == ELF::DT_NEEDED)
855      Libs.push_back(Obj->getDynamicString(DynI->d_un.d_val));
856
857  std::stable_sort(Libs.begin(), Libs.end());
858
859  for (LibsTy::const_iterator I = Libs.begin(), E = Libs.end(); I != E; ++I) {
860    outs() << "  " << *I << "\n";
861  }
862}
863
864template<class ELFT>
865void ELFDumper<ELFT>::printProgramHeaders() {
866  ListScope L(W, "ProgramHeaders");
867
868  for (typename ELFO::Elf_Phdr_Iter PI = Obj->begin_program_headers(),
869                                    PE = Obj->end_program_headers();
870                                    PI != PE; ++PI) {
871    DictScope P(W, "ProgramHeader");
872    W.printHex   ("Type",
873                  getElfSegmentType(Obj->getHeader()->e_machine, PI->p_type),
874                  PI->p_type);
875    W.printHex   ("Offset", PI->p_offset);
876    W.printHex   ("VirtualAddress", PI->p_vaddr);
877    W.printHex   ("PhysicalAddress", PI->p_paddr);
878    W.printNumber("FileSize", PI->p_filesz);
879    W.printNumber("MemSize", PI->p_memsz);
880    W.printFlags ("Flags", PI->p_flags, makeArrayRef(ElfSegmentFlags));
881    W.printNumber("Alignment", PI->p_align);
882  }
883}
884
885template <class ELFT>
886void ELFDumper<ELFT>::printAttributes() {
887  W.startLine() << "Attributes not implemented.\n";
888}
889
890namespace {
891template <>
892void ELFDumper<ELFType<support::little, 2, false> >::printAttributes() {
893  if (Obj->getHeader()->e_machine != EM_ARM) {
894    W.startLine() << "Attributes not implemented.\n";
895    return;
896  }
897
898  DictScope BA(W, "BuildAttributes");
899  for (ELFO::Elf_Shdr_Iter SI = Obj->begin_sections(), SE = Obj->end_sections();
900       SI != SE; ++SI) {
901    if (SI->sh_type != ELF::SHT_ARM_ATTRIBUTES)
902      continue;
903
904    ErrorOr<ArrayRef<uint8_t> > Contents = Obj->getSectionContents(&(*SI));
905    if (!Contents)
906      continue;
907
908    if ((*Contents)[0] != ARMBuildAttrs::Format_Version) {
909      errs() << "unrecognised FormatVersion: 0x" << utohexstr((*Contents)[0])
910             << '\n';
911      continue;
912    }
913
914    W.printHex("FormatVersion", (*Contents)[0]);
915    if (Contents->size() == 1)
916      continue;
917
918    ARMAttributeParser(W).Parse(*Contents);
919  }
920}
921}
922
923