ELFDumper.cpp revision fe9ce427d076627beed834d5c322e61323dfd1fc 
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 "Error.h"
17#include "ObjDumper.h"
18#include "StreamWriter.h"
19
20#include "llvm/ADT/SmallString.h"
21#include "llvm/Object/ELFObjectFile.h"
22#include "llvm/Support/Compiler.h"
23#include "llvm/Support/Format.h"
24#include "llvm/Support/MathExtras.h"
25#include "llvm/Support/raw_ostream.h"
26
27using namespace llvm;
28using namespace llvm::object;
29using namespace ELF;
30
31#define LLVM_READOBJ_ENUM_CASE(ns, enum) \
32  case ns::enum: return #enum;
33
34namespace {
35
36template<typename ELFT>
37class ELFDumper : public ObjDumper {
38public:
39  ELFDumper(const ELFFile<ELFT> *Obj, StreamWriter &Writer)
40      : ObjDumper(Writer), Obj(Obj) {}
41
42  virtual void printFileHeaders() LLVM_OVERRIDE;
43  virtual void printSections() LLVM_OVERRIDE;
44  virtual void printRelocations() LLVM_OVERRIDE;
45  virtual void printSymbols() LLVM_OVERRIDE;
46  virtual void printDynamicSymbols() LLVM_OVERRIDE;
47  virtual void printUnwindInfo() LLVM_OVERRIDE;
48
49  virtual void printDynamicTable() LLVM_OVERRIDE;
50  virtual void printNeededLibraries() LLVM_OVERRIDE;
51  virtual void printProgramHeaders() LLVM_OVERRIDE;
52
53private:
54  typedef ELFFile<ELFT> ELFO;
55  typedef typename ELFO::Elf_Shdr Elf_Shdr;
56  typedef typename ELFO::Elf_Sym Elf_Sym;
57
58  void printSymbol(typename ELFO::Elf_Sym_Iter Symbol);
59
60  void printRelocations(const Elf_Shdr *Sec);
61  void printRelocation(const Elf_Shdr *Sec, typename ELFO::Elf_Rela Rel);
62
63  const ELFO *Obj;
64};
65
66template <class T> T errorOrDefault(ErrorOr<T> Val, T Default = T()) {
67  if (!Val) {
68    error(Val);
69    return Default;
70  }
71
72  return *Val;
73}
74} // namespace
75
76namespace llvm {
77
78template <class ELFT>
79static error_code createELFDumper(const ELFFile<ELFT> *Obj,
80                                  StreamWriter &Writer,
81                                  OwningPtr<ObjDumper> &Result) {
82  Result.reset(new ELFDumper<ELFT>(Obj, Writer));
83  return readobj_error::success;
84}
85
86error_code createELFDumper(const object::ObjectFile *Obj,
87                           StreamWriter& Writer,
88                           OwningPtr<ObjDumper> &Result) {
89  // Little-endian 32-bit
90  if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
91    return createELFDumper(ELFObj->getELFFile(), Writer, Result);
92
93  // Big-endian 32-bit
94  if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
95    return createELFDumper(ELFObj->getELFFile(), Writer, Result);
96
97  // Little-endian 64-bit
98  if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
99    return createELFDumper(ELFObj->getELFFile(), Writer, Result);
100
101  // Big-endian 64-bit
102  if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
103    return createELFDumper(ELFObj->getELFFile(), Writer, Result);
104
105  return readobj_error::unsupported_obj_file_format;
106}
107
108} // namespace llvm
109
110static const EnumEntry<unsigned> ElfClass[] = {
111  { "None",   ELF::ELFCLASSNONE },
112  { "32-bit", ELF::ELFCLASS32   },
113  { "64-bit", ELF::ELFCLASS64   },
114};
115
116static const EnumEntry<unsigned> ElfDataEncoding[] = {
117  { "None",         ELF::ELFDATANONE },
118  { "LittleEndian", ELF::ELFDATA2LSB },
119  { "BigEndian",    ELF::ELFDATA2MSB },
120};
121
122static const EnumEntry<unsigned> ElfObjectFileType[] = {
123  { "None",         ELF::ET_NONE },
124  { "Relocatable",  ELF::ET_REL  },
125  { "Executable",   ELF::ET_EXEC },
126  { "SharedObject", ELF::ET_DYN  },
127  { "Core",         ELF::ET_CORE },
128};
129
130static const EnumEntry<unsigned> ElfOSABI[] = {
131  { "SystemV",      ELF::ELFOSABI_NONE         },
132  { "HPUX",         ELF::ELFOSABI_HPUX         },
133  { "NetBSD",       ELF::ELFOSABI_NETBSD       },
134  { "GNU/Linux",    ELF::ELFOSABI_LINUX        },
135  { "GNU/Hurd",     ELF::ELFOSABI_HURD         },
136  { "Solaris",      ELF::ELFOSABI_SOLARIS      },
137  { "AIX",          ELF::ELFOSABI_AIX          },
138  { "IRIX",         ELF::ELFOSABI_IRIX         },
139  { "FreeBSD",      ELF::ELFOSABI_FREEBSD      },
140  { "TRU64",        ELF::ELFOSABI_TRU64        },
141  { "Modesto",      ELF::ELFOSABI_MODESTO      },
142  { "OpenBSD",      ELF::ELFOSABI_OPENBSD      },
143  { "OpenVMS",      ELF::ELFOSABI_OPENVMS      },
144  { "NSK",          ELF::ELFOSABI_NSK          },
145  { "AROS",         ELF::ELFOSABI_AROS         },
146  { "FenixOS",      ELF::ELFOSABI_FENIXOS      },
147  { "C6000_ELFABI", ELF::ELFOSABI_C6000_ELFABI },
148  { "C6000_LINUX" , ELF::ELFOSABI_C6000_LINUX  },
149  { "ARM",          ELF::ELFOSABI_ARM          },
150  { "Standalone"  , ELF::ELFOSABI_STANDALONE   }
151};
152
153static const EnumEntry<unsigned> ElfMachineType[] = {
154  LLVM_READOBJ_ENUM_ENT(ELF, EM_NONE         ),
155  LLVM_READOBJ_ENUM_ENT(ELF, EM_M32          ),
156  LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARC        ),
157  LLVM_READOBJ_ENUM_ENT(ELF, EM_386          ),
158  LLVM_READOBJ_ENUM_ENT(ELF, EM_68K          ),
159  LLVM_READOBJ_ENUM_ENT(ELF, EM_88K          ),
160  LLVM_READOBJ_ENUM_ENT(ELF, EM_486          ),
161  LLVM_READOBJ_ENUM_ENT(ELF, EM_860          ),
162  LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS         ),
163  LLVM_READOBJ_ENUM_ENT(ELF, EM_S370         ),
164  LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS_RS3_LE  ),
165  LLVM_READOBJ_ENUM_ENT(ELF, EM_PARISC       ),
166  LLVM_READOBJ_ENUM_ENT(ELF, EM_VPP500       ),
167  LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARC32PLUS  ),
168  LLVM_READOBJ_ENUM_ENT(ELF, EM_960          ),
169  LLVM_READOBJ_ENUM_ENT(ELF, EM_PPC          ),
170  LLVM_READOBJ_ENUM_ENT(ELF, EM_PPC64        ),
171  LLVM_READOBJ_ENUM_ENT(ELF, EM_S390         ),
172  LLVM_READOBJ_ENUM_ENT(ELF, EM_SPU          ),
173  LLVM_READOBJ_ENUM_ENT(ELF, EM_V800         ),
174  LLVM_READOBJ_ENUM_ENT(ELF, EM_FR20         ),
175  LLVM_READOBJ_ENUM_ENT(ELF, EM_RH32         ),
176  LLVM_READOBJ_ENUM_ENT(ELF, EM_RCE          ),
177  LLVM_READOBJ_ENUM_ENT(ELF, EM_ARM          ),
178  LLVM_READOBJ_ENUM_ENT(ELF, EM_ALPHA        ),
179  LLVM_READOBJ_ENUM_ENT(ELF, EM_SH           ),
180  LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARCV9      ),
181  LLVM_READOBJ_ENUM_ENT(ELF, EM_TRICORE      ),
182  LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC          ),
183  LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_300       ),
184  LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_300H      ),
185  LLVM_READOBJ_ENUM_ENT(ELF, EM_H8S          ),
186  LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_500       ),
187  LLVM_READOBJ_ENUM_ENT(ELF, EM_IA_64        ),
188  LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS_X       ),
189  LLVM_READOBJ_ENUM_ENT(ELF, EM_COLDFIRE     ),
190  LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC12       ),
191  LLVM_READOBJ_ENUM_ENT(ELF, EM_MMA          ),
192  LLVM_READOBJ_ENUM_ENT(ELF, EM_PCP          ),
193  LLVM_READOBJ_ENUM_ENT(ELF, EM_NCPU         ),
194  LLVM_READOBJ_ENUM_ENT(ELF, EM_NDR1         ),
195  LLVM_READOBJ_ENUM_ENT(ELF, EM_STARCORE     ),
196  LLVM_READOBJ_ENUM_ENT(ELF, EM_ME16         ),
197  LLVM_READOBJ_ENUM_ENT(ELF, EM_ST100        ),
198  LLVM_READOBJ_ENUM_ENT(ELF, EM_TINYJ        ),
199  LLVM_READOBJ_ENUM_ENT(ELF, EM_X86_64       ),
200  LLVM_READOBJ_ENUM_ENT(ELF, EM_PDSP         ),
201  LLVM_READOBJ_ENUM_ENT(ELF, EM_PDP10        ),
202  LLVM_READOBJ_ENUM_ENT(ELF, EM_PDP11        ),
203  LLVM_READOBJ_ENUM_ENT(ELF, EM_FX66         ),
204  LLVM_READOBJ_ENUM_ENT(ELF, EM_ST9PLUS      ),
205  LLVM_READOBJ_ENUM_ENT(ELF, EM_ST7          ),
206  LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC16       ),
207  LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC11       ),
208  LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC08       ),
209  LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC05       ),
210  LLVM_READOBJ_ENUM_ENT(ELF, EM_SVX          ),
211  LLVM_READOBJ_ENUM_ENT(ELF, EM_ST19         ),
212  LLVM_READOBJ_ENUM_ENT(ELF, EM_VAX          ),
213  LLVM_READOBJ_ENUM_ENT(ELF, EM_CRIS         ),
214  LLVM_READOBJ_ENUM_ENT(ELF, EM_JAVELIN      ),
215  LLVM_READOBJ_ENUM_ENT(ELF, EM_FIREPATH     ),
216  LLVM_READOBJ_ENUM_ENT(ELF, EM_ZSP          ),
217  LLVM_READOBJ_ENUM_ENT(ELF, EM_MMIX         ),
218  LLVM_READOBJ_ENUM_ENT(ELF, EM_HUANY        ),
219  LLVM_READOBJ_ENUM_ENT(ELF, EM_PRISM        ),
220  LLVM_READOBJ_ENUM_ENT(ELF, EM_AVR          ),
221  LLVM_READOBJ_ENUM_ENT(ELF, EM_FR30         ),
222  LLVM_READOBJ_ENUM_ENT(ELF, EM_D10V         ),
223  LLVM_READOBJ_ENUM_ENT(ELF, EM_D30V         ),
224  LLVM_READOBJ_ENUM_ENT(ELF, EM_V850         ),
225  LLVM_READOBJ_ENUM_ENT(ELF, EM_M32R         ),
226  LLVM_READOBJ_ENUM_ENT(ELF, EM_MN10300      ),
227  LLVM_READOBJ_ENUM_ENT(ELF, EM_MN10200      ),
228  LLVM_READOBJ_ENUM_ENT(ELF, EM_PJ           ),
229  LLVM_READOBJ_ENUM_ENT(ELF, EM_OPENRISC     ),
230  LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC_COMPACT  ),
231  LLVM_READOBJ_ENUM_ENT(ELF, EM_XTENSA       ),
232  LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE    ),
233  LLVM_READOBJ_ENUM_ENT(ELF, EM_TMM_GPP      ),
234  LLVM_READOBJ_ENUM_ENT(ELF, EM_NS32K        ),
235  LLVM_READOBJ_ENUM_ENT(ELF, EM_TPC          ),
236  LLVM_READOBJ_ENUM_ENT(ELF, EM_SNP1K        ),
237  LLVM_READOBJ_ENUM_ENT(ELF, EM_ST200        ),
238  LLVM_READOBJ_ENUM_ENT(ELF, EM_IP2K         ),
239  LLVM_READOBJ_ENUM_ENT(ELF, EM_MAX          ),
240  LLVM_READOBJ_ENUM_ENT(ELF, EM_CR           ),
241  LLVM_READOBJ_ENUM_ENT(ELF, EM_F2MC16       ),
242  LLVM_READOBJ_ENUM_ENT(ELF, EM_MSP430       ),
243  LLVM_READOBJ_ENUM_ENT(ELF, EM_BLACKFIN     ),
244  LLVM_READOBJ_ENUM_ENT(ELF, EM_SE_C33       ),
245  LLVM_READOBJ_ENUM_ENT(ELF, EM_SEP          ),
246  LLVM_READOBJ_ENUM_ENT(ELF, EM_ARCA         ),
247  LLVM_READOBJ_ENUM_ENT(ELF, EM_UNICORE      ),
248  LLVM_READOBJ_ENUM_ENT(ELF, EM_EXCESS       ),
249  LLVM_READOBJ_ENUM_ENT(ELF, EM_DXP          ),
250  LLVM_READOBJ_ENUM_ENT(ELF, EM_ALTERA_NIOS2 ),
251  LLVM_READOBJ_ENUM_ENT(ELF, EM_CRX          ),
252  LLVM_READOBJ_ENUM_ENT(ELF, EM_XGATE        ),
253  LLVM_READOBJ_ENUM_ENT(ELF, EM_C166         ),
254  LLVM_READOBJ_ENUM_ENT(ELF, EM_M16C         ),
255  LLVM_READOBJ_ENUM_ENT(ELF, EM_DSPIC30F     ),
256  LLVM_READOBJ_ENUM_ENT(ELF, EM_CE           ),
257  LLVM_READOBJ_ENUM_ENT(ELF, EM_M32C         ),
258  LLVM_READOBJ_ENUM_ENT(ELF, EM_TSK3000      ),
259  LLVM_READOBJ_ENUM_ENT(ELF, EM_RS08         ),
260  LLVM_READOBJ_ENUM_ENT(ELF, EM_SHARC        ),
261  LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG2        ),
262  LLVM_READOBJ_ENUM_ENT(ELF, EM_SCORE7       ),
263  LLVM_READOBJ_ENUM_ENT(ELF, EM_DSP24        ),
264  LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE3   ),
265  LLVM_READOBJ_ENUM_ENT(ELF, EM_LATTICEMICO32),
266  LLVM_READOBJ_ENUM_ENT(ELF, EM_SE_C17       ),
267  LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C6000     ),
268  LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C2000     ),
269  LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C5500     ),
270  LLVM_READOBJ_ENUM_ENT(ELF, EM_MMDSP_PLUS   ),
271  LLVM_READOBJ_ENUM_ENT(ELF, EM_CYPRESS_M8C  ),
272  LLVM_READOBJ_ENUM_ENT(ELF, EM_R32C         ),
273  LLVM_READOBJ_ENUM_ENT(ELF, EM_TRIMEDIA     ),
274  LLVM_READOBJ_ENUM_ENT(ELF, EM_HEXAGON      ),
275  LLVM_READOBJ_ENUM_ENT(ELF, EM_8051         ),
276  LLVM_READOBJ_ENUM_ENT(ELF, EM_STXP7X       ),
277  LLVM_READOBJ_ENUM_ENT(ELF, EM_NDS32        ),
278  LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG1        ),
279  LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG1X       ),
280  LLVM_READOBJ_ENUM_ENT(ELF, EM_MAXQ30       ),
281  LLVM_READOBJ_ENUM_ENT(ELF, EM_XIMO16       ),
282  LLVM_READOBJ_ENUM_ENT(ELF, EM_MANIK        ),
283  LLVM_READOBJ_ENUM_ENT(ELF, EM_CRAYNV2      ),
284  LLVM_READOBJ_ENUM_ENT(ELF, EM_RX           ),
285  LLVM_READOBJ_ENUM_ENT(ELF, EM_METAG        ),
286  LLVM_READOBJ_ENUM_ENT(ELF, EM_MCST_ELBRUS  ),
287  LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG16       ),
288  LLVM_READOBJ_ENUM_ENT(ELF, EM_CR16         ),
289  LLVM_READOBJ_ENUM_ENT(ELF, EM_ETPU         ),
290  LLVM_READOBJ_ENUM_ENT(ELF, EM_SLE9X        ),
291  LLVM_READOBJ_ENUM_ENT(ELF, EM_L10M         ),
292  LLVM_READOBJ_ENUM_ENT(ELF, EM_K10M         ),
293  LLVM_READOBJ_ENUM_ENT(ELF, EM_AARCH64      ),
294  LLVM_READOBJ_ENUM_ENT(ELF, EM_AVR32        ),
295  LLVM_READOBJ_ENUM_ENT(ELF, EM_STM8         ),
296  LLVM_READOBJ_ENUM_ENT(ELF, EM_TILE64       ),
297  LLVM_READOBJ_ENUM_ENT(ELF, EM_TILEPRO      ),
298  LLVM_READOBJ_ENUM_ENT(ELF, EM_CUDA         ),
299  LLVM_READOBJ_ENUM_ENT(ELF, EM_TILEGX       ),
300  LLVM_READOBJ_ENUM_ENT(ELF, EM_CLOUDSHIELD  ),
301  LLVM_READOBJ_ENUM_ENT(ELF, EM_COREA_1ST    ),
302  LLVM_READOBJ_ENUM_ENT(ELF, EM_COREA_2ND    ),
303  LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC_COMPACT2 ),
304  LLVM_READOBJ_ENUM_ENT(ELF, EM_OPEN8        ),
305  LLVM_READOBJ_ENUM_ENT(ELF, EM_RL78         ),
306  LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE5   ),
307  LLVM_READOBJ_ENUM_ENT(ELF, EM_78KOR        ),
308  LLVM_READOBJ_ENUM_ENT(ELF, EM_56800EX      )
309};
310
311static const EnumEntry<unsigned> ElfSymbolBindings[] = {
312  { "Local",  ELF::STB_LOCAL  },
313  { "Global", ELF::STB_GLOBAL },
314  { "Weak",   ELF::STB_WEAK   }
315};
316
317static const EnumEntry<unsigned> ElfSymbolTypes[] = {
318  { "None",      ELF::STT_NOTYPE    },
319  { "Object",    ELF::STT_OBJECT    },
320  { "Function",  ELF::STT_FUNC      },
321  { "Section",   ELF::STT_SECTION   },
322  { "File",      ELF::STT_FILE      },
323  { "Common",    ELF::STT_COMMON    },
324  { "TLS",       ELF::STT_TLS       },
325  { "GNU_IFunc", ELF::STT_GNU_IFUNC }
326};
327
328static const char *getElfSectionType(unsigned Arch, unsigned Type) {
329  switch (Arch) {
330  case ELF::EM_ARM:
331    switch (Type) {
332    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_EXIDX);
333    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_PREEMPTMAP);
334    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_ATTRIBUTES);
335    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_DEBUGOVERLAY);
336    LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_OVERLAYSECTION);
337    }
338  case ELF::EM_HEXAGON:
339    switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_HEX_ORDERED); }
340  case ELF::EM_X86_64:
341    switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_X86_64_UNWIND); }
342  case ELF::EM_MIPS:
343  case ELF::EM_MIPS_RS3_LE:
344    switch (Type) {
345    LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_REGINFO);
346    LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_OPTIONS);
347    }
348  }
349
350  switch (Type) {
351  LLVM_READOBJ_ENUM_CASE(ELF, SHT_NULL              );
352  LLVM_READOBJ_ENUM_CASE(ELF, SHT_PROGBITS          );
353  LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB            );
354  LLVM_READOBJ_ENUM_CASE(ELF, SHT_STRTAB            );
355  LLVM_READOBJ_ENUM_CASE(ELF, SHT_RELA              );
356  LLVM_READOBJ_ENUM_CASE(ELF, SHT_HASH              );
357  LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNAMIC           );
358  LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOTE              );
359  LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOBITS            );
360  LLVM_READOBJ_ENUM_CASE(ELF, SHT_REL               );
361  LLVM_READOBJ_ENUM_CASE(ELF, SHT_SHLIB             );
362  LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNSYM            );
363  LLVM_READOBJ_ENUM_CASE(ELF, SHT_INIT_ARRAY        );
364  LLVM_READOBJ_ENUM_CASE(ELF, SHT_FINI_ARRAY        );
365  LLVM_READOBJ_ENUM_CASE(ELF, SHT_PREINIT_ARRAY     );
366  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GROUP             );
367  LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB_SHNDX      );
368  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_ATTRIBUTES    );
369  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_HASH          );
370  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verdef        );
371  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verneed       );
372  LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_versym        );
373  default: return "";
374  }
375}
376
377static const EnumEntry<unsigned> ElfSectionFlags[] = {
378  LLVM_READOBJ_ENUM_ENT(ELF, SHF_WRITE           ),
379  LLVM_READOBJ_ENUM_ENT(ELF, SHF_ALLOC           ),
380  LLVM_READOBJ_ENUM_ENT(ELF, SHF_EXCLUDE         ),
381  LLVM_READOBJ_ENUM_ENT(ELF, SHF_EXECINSTR       ),
382  LLVM_READOBJ_ENUM_ENT(ELF, SHF_MERGE           ),
383  LLVM_READOBJ_ENUM_ENT(ELF, SHF_STRINGS         ),
384  LLVM_READOBJ_ENUM_ENT(ELF, SHF_INFO_LINK       ),
385  LLVM_READOBJ_ENUM_ENT(ELF, SHF_LINK_ORDER      ),
386  LLVM_READOBJ_ENUM_ENT(ELF, SHF_OS_NONCONFORMING),
387  LLVM_READOBJ_ENUM_ENT(ELF, SHF_GROUP           ),
388  LLVM_READOBJ_ENUM_ENT(ELF, SHF_TLS             ),
389  LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_CP_SECTION),
390  LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_DP_SECTION),
391  LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP    )
392};
393
394static const char *getElfSegmentType(unsigned Arch, unsigned Type) {
395  // Check potentially overlapped processor-specific
396  // program header type.
397  switch (Arch) {
398  case ELF::EM_ARM:
399    switch (Type) {
400    LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX);
401    }
402  case ELF::EM_MIPS:
403  case ELF::EM_MIPS_RS3_LE:
404    switch (Type) {
405    LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO);
406    LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC);
407    LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS);
408    }
409  }
410
411  switch (Type) {
412  LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL   );
413  LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD   );
414  LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC);
415  LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP );
416  LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE   );
417  LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB  );
418  LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR   );
419  LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS    );
420
421  LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME);
422  LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND);
423
424  LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK);
425  LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO);
426  default: return "";
427  }
428}
429
430static const EnumEntry<unsigned> ElfSegmentFlags[] = {
431  LLVM_READOBJ_ENUM_ENT(ELF, PF_X),
432  LLVM_READOBJ_ENUM_ENT(ELF, PF_W),
433  LLVM_READOBJ_ENUM_ENT(ELF, PF_R)
434};
435
436template<class ELFT>
437void ELFDumper<ELFT>::printFileHeaders() {
438  const typename ELFO::Elf_Ehdr *Header = Obj->getHeader();
439
440  {
441    DictScope D(W, "ElfHeader");
442    {
443      DictScope D(W, "Ident");
444      W.printBinary("Magic", makeArrayRef(Header->e_ident).slice(ELF::EI_MAG0,
445                                                                 4));
446      W.printEnum  ("Class", Header->e_ident[ELF::EI_CLASS],
447                      makeArrayRef(ElfClass));
448      W.printEnum  ("DataEncoding", Header->e_ident[ELF::EI_DATA],
449                      makeArrayRef(ElfDataEncoding));
450      W.printNumber("FileVersion", Header->e_ident[ELF::EI_VERSION]);
451      W.printEnum  ("OS/ABI", Header->e_ident[ELF::EI_OSABI],
452                      makeArrayRef(ElfOSABI));
453      W.printNumber("ABIVersion", Header->e_ident[ELF::EI_ABIVERSION]);
454      W.printBinary("Unused", makeArrayRef(Header->e_ident).slice(ELF::EI_PAD));
455    }
456
457    W.printEnum  ("Type", Header->e_type, makeArrayRef(ElfObjectFileType));
458    W.printEnum  ("Machine", Header->e_machine, makeArrayRef(ElfMachineType));
459    W.printNumber("Version", Header->e_version);
460    W.printHex   ("Entry", Header->e_entry);
461    W.printHex   ("ProgramHeaderOffset", Header->e_phoff);
462    W.printHex   ("SectionHeaderOffset", Header->e_shoff);
463    W.printFlags ("Flags", Header->e_flags);
464    W.printNumber("HeaderSize", Header->e_ehsize);
465    W.printNumber("ProgramHeaderEntrySize", Header->e_phentsize);
466    W.printNumber("ProgramHeaderCount", Header->e_phnum);
467    W.printNumber("SectionHeaderEntrySize", Header->e_shentsize);
468    W.printNumber("SectionHeaderCount", Header->e_shnum);
469    W.printNumber("StringTableSectionIndex", Header->e_shstrndx);
470  }
471}
472
473template<class ELFT>
474void ELFDumper<ELFT>::printSections() {
475  ListScope SectionsD(W, "Sections");
476
477  int SectionIndex = -1;
478  for (typename ELFO::Elf_Shdr_Iter SecI = Obj->begin_sections(),
479                                    SecE = Obj->end_sections();
480       SecI != SecE; ++SecI) {
481    ++SectionIndex;
482
483    const Elf_Shdr *Section = &*SecI;
484    StringRef Name = errorOrDefault(Obj->getSectionName(Section));
485
486    DictScope SectionD(W, "Section");
487    W.printNumber("Index", SectionIndex);
488    W.printNumber("Name", Name, Section->sh_name);
489    W.printHex("Type",
490               getElfSectionType(Obj->getHeader()->e_machine, Section->sh_type),
491               Section->sh_type);
492    W.printFlags ("Flags", Section->sh_flags, makeArrayRef(ElfSectionFlags));
493    W.printHex   ("Address", Section->sh_addr);
494    W.printHex   ("Offset", Section->sh_offset);
495    W.printNumber("Size", Section->sh_size);
496    W.printNumber("Link", Section->sh_link);
497    W.printNumber("Info", Section->sh_info);
498    W.printNumber("AddressAlignment", Section->sh_addralign);
499    W.printNumber("EntrySize", Section->sh_entsize);
500
501    if (opts::SectionRelocations) {
502      ListScope D(W, "Relocations");
503      printRelocations(Section);
504    }
505
506    if (opts::SectionSymbols) {
507      ListScope D(W, "Symbols");
508      for (typename ELFO::Elf_Sym_Iter SymI = Obj->begin_symbols(),
509                                       SymE = Obj->end_symbols();
510           SymI != SymE; ++SymI) {
511        if (Obj->getSection(&*SymI) == Section)
512          printSymbol(SymI);
513      }
514    }
515
516    if (opts::SectionData) {
517      ArrayRef<uint8_t> Data = errorOrDefault(Obj->getSectionContents(Section));
518      W.printBinaryBlock("SectionData",
519                         StringRef((const char *)Data.data(), Data.size()));
520    }
521  }
522}
523
524template<class ELFT>
525void ELFDumper<ELFT>::printRelocations() {
526  ListScope D(W, "Relocations");
527
528  int SectionNumber = -1;
529  for (typename ELFO::Elf_Shdr_Iter SecI = Obj->begin_sections(),
530                                    SecE = Obj->end_sections();
531       SecI != SecE; ++SecI) {
532    ++SectionNumber;
533
534    if (SecI->sh_type != ELF::SHT_REL && SecI->sh_type != ELF::SHT_RELA)
535      continue;
536
537    StringRef Name = errorOrDefault(Obj->getSectionName(&*SecI));
538
539    W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n";
540    W.indent();
541
542    printRelocations(&*SecI);
543
544    W.unindent();
545    W.startLine() << "}\n";
546  }
547}
548
549template <class ELFT>
550void ELFDumper<ELFT>::printRelocations(const Elf_Shdr *Sec) {
551  switch (Sec->sh_type) {
552  case ELF::SHT_REL:
553    for (typename ELFO::Elf_Rel_Iter RI = Obj->begin_rel(Sec),
554                                     RE = Obj->end_rel(Sec);
555         RI != RE; ++RI) {
556      typename ELFO::Elf_Rela Rela;
557      Rela.r_offset = RI->r_offset;
558      Rela.r_info = RI->r_info;
559      Rela.r_addend = 0;
560      printRelocation(Sec, Rela);
561    }
562    break;
563  case ELF::SHT_RELA:
564    for (typename ELFO::Elf_Rela_Iter RI = Obj->begin_rela(Sec),
565                                      RE = Obj->end_rela(Sec);
566         RI != RE; ++RI) {
567      printRelocation(Sec, *RI);
568    }
569    break;
570  }
571}
572
573template <class ELFT>
574void ELFDumper<ELFT>::printRelocation(const Elf_Shdr *Sec,
575                                      typename ELFO::Elf_Rela Rel) {
576  SmallString<32> RelocName;
577  Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName);
578  StringRef SymbolName;
579  std::pair<const Elf_Shdr *, const Elf_Sym *> Sym =
580      Obj->getRelocationSymbol(Sec, &Rel);
581  if (Sym.first)
582    SymbolName = errorOrDefault(Obj->getSymbolName(Sym.first, Sym.second));
583
584  if (opts::ExpandRelocs) {
585    DictScope Group(W, "Relocation");
586    W.printHex("Offset", Rel.r_offset);
587    W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL()));
588    W.printString("Symbol", SymbolName.size() > 0 ? SymbolName : "-");
589    W.printHex("Addend", Rel.r_addend);
590  } else {
591    raw_ostream& OS = W.startLine();
592    OS << W.hex(Rel.r_offset)
593       << " " << RelocName
594       << " " << (SymbolName.size() > 0 ? SymbolName : "-")
595       << " " << W.hex(Rel.r_addend)
596       << "\n";
597  }
598}
599
600template<class ELFT>
601void ELFDumper<ELFT>::printSymbols() {
602  ListScope Group(W, "Symbols");
603  for (typename ELFO::Elf_Sym_Iter SymI = Obj->begin_symbols(),
604                                   SymE = Obj->end_symbols();
605       SymI != SymE; ++SymI) {
606    printSymbol(SymI);
607  }
608}
609
610template<class ELFT>
611void ELFDumper<ELFT>::printDynamicSymbols() {
612  ListScope Group(W, "DynamicSymbols");
613
614  for (typename ELFO::Elf_Sym_Iter SymI = Obj->begin_dynamic_symbols(),
615                                   SymE = Obj->end_dynamic_symbols();
616       SymI != SymE; ++SymI) {
617    printSymbol(SymI);
618  }
619}
620
621template <class ELFT>
622void ELFDumper<ELFT>::printSymbol(typename ELFO::Elf_Sym_Iter Symbol) {
623  StringRef SymbolName = errorOrDefault(Obj->getSymbolName(Symbol));
624  const Elf_Shdr *Sec = Obj->getSection(&*Symbol);
625  StringRef SectionName = Sec ? errorOrDefault(Obj->getSectionName(Sec)) : "";
626  std::string FullSymbolName(SymbolName);
627  if (Symbol.isDynamic()) {
628    bool IsDefault;
629    ErrorOr<StringRef> Version = Obj->getSymbolVersion(0, &*Symbol, IsDefault);
630    if (Version) {
631      FullSymbolName += (IsDefault ? "@@" : "@");
632      FullSymbolName += *Version;
633    } else
634      error(Version);
635  }
636
637  DictScope D(W, "Symbol");
638  W.printNumber("Name", FullSymbolName, Symbol->st_name);
639  W.printHex   ("Value", Symbol->st_value);
640  W.printNumber("Size", Symbol->st_size);
641  W.printEnum  ("Binding", Symbol->getBinding(),
642                  makeArrayRef(ElfSymbolBindings));
643  W.printEnum  ("Type", Symbol->getType(), makeArrayRef(ElfSymbolTypes));
644  W.printNumber("Other", Symbol->st_other);
645  W.printHex   ("Section", SectionName, Symbol->st_shndx);
646}
647
648#define LLVM_READOBJ_TYPE_CASE(name) \
649  case DT_##name: return #name
650
651static const char *getTypeString(uint64_t Type) {
652  switch (Type) {
653  LLVM_READOBJ_TYPE_CASE(BIND_NOW);
654  LLVM_READOBJ_TYPE_CASE(DEBUG);
655  LLVM_READOBJ_TYPE_CASE(FINI);
656  LLVM_READOBJ_TYPE_CASE(FINI_ARRAY);
657  LLVM_READOBJ_TYPE_CASE(FINI_ARRAYSZ);
658  LLVM_READOBJ_TYPE_CASE(FLAGS);
659  LLVM_READOBJ_TYPE_CASE(HASH);
660  LLVM_READOBJ_TYPE_CASE(INIT);
661  LLVM_READOBJ_TYPE_CASE(INIT_ARRAY);
662  LLVM_READOBJ_TYPE_CASE(INIT_ARRAYSZ);
663  LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAY);
664  LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAYSZ);
665  LLVM_READOBJ_TYPE_CASE(JMPREL);
666  LLVM_READOBJ_TYPE_CASE(NEEDED);
667  LLVM_READOBJ_TYPE_CASE(NULL);
668  LLVM_READOBJ_TYPE_CASE(PLTGOT);
669  LLVM_READOBJ_TYPE_CASE(PLTREL);
670  LLVM_READOBJ_TYPE_CASE(PLTRELSZ);
671  LLVM_READOBJ_TYPE_CASE(REL);
672  LLVM_READOBJ_TYPE_CASE(RELA);
673  LLVM_READOBJ_TYPE_CASE(RELENT);
674  LLVM_READOBJ_TYPE_CASE(RELSZ);
675  LLVM_READOBJ_TYPE_CASE(RELAENT);
676  LLVM_READOBJ_TYPE_CASE(RELASZ);
677  LLVM_READOBJ_TYPE_CASE(RPATH);
678  LLVM_READOBJ_TYPE_CASE(RUNPATH);
679  LLVM_READOBJ_TYPE_CASE(SONAME);
680  LLVM_READOBJ_TYPE_CASE(STRSZ);
681  LLVM_READOBJ_TYPE_CASE(STRTAB);
682  LLVM_READOBJ_TYPE_CASE(SYMBOLIC);
683  LLVM_READOBJ_TYPE_CASE(SYMENT);
684  LLVM_READOBJ_TYPE_CASE(SYMTAB);
685  LLVM_READOBJ_TYPE_CASE(TEXTREL);
686  LLVM_READOBJ_TYPE_CASE(VERNEED);
687  LLVM_READOBJ_TYPE_CASE(VERNEEDNUM);
688  LLVM_READOBJ_TYPE_CASE(VERSYM);
689  LLVM_READOBJ_TYPE_CASE(MIPS_RLD_VERSION);
690  LLVM_READOBJ_TYPE_CASE(MIPS_FLAGS);
691  LLVM_READOBJ_TYPE_CASE(MIPS_BASE_ADDRESS);
692  LLVM_READOBJ_TYPE_CASE(MIPS_LOCAL_GOTNO);
693  LLVM_READOBJ_TYPE_CASE(MIPS_SYMTABNO);
694  LLVM_READOBJ_TYPE_CASE(MIPS_UNREFEXTNO);
695  LLVM_READOBJ_TYPE_CASE(MIPS_GOTSYM);
696  default: return "unknown";
697  }
698}
699
700#undef LLVM_READOBJ_TYPE_CASE
701
702template <class ELFT>
703static void printValue(const ELFFile<ELFT> *O, uint64_t Type, uint64_t Value,
704                       bool Is64, raw_ostream &OS) {
705  switch (Type) {
706  case DT_PLTREL:
707    if (Value == DT_REL) {
708      OS << "REL";
709      break;
710    } else if (Value == DT_RELA) {
711      OS << "RELA";
712      break;
713    }
714  // Fallthrough.
715  case DT_PLTGOT:
716  case DT_HASH:
717  case DT_STRTAB:
718  case DT_SYMTAB:
719  case DT_RELA:
720  case DT_INIT:
721  case DT_FINI:
722  case DT_REL:
723  case DT_JMPREL:
724  case DT_INIT_ARRAY:
725  case DT_FINI_ARRAY:
726  case DT_PREINIT_ARRAY:
727  case DT_DEBUG:
728  case DT_VERNEED:
729  case DT_VERSYM:
730  case DT_NULL:
731  case DT_MIPS_FLAGS:
732  case DT_MIPS_BASE_ADDRESS:
733  case DT_MIPS_GOTSYM:
734    OS << format("0x%" PRIX64, Value);
735    break;
736  case DT_VERNEEDNUM:
737  case DT_MIPS_RLD_VERSION:
738  case DT_MIPS_LOCAL_GOTNO:
739  case DT_MIPS_SYMTABNO:
740  case DT_MIPS_UNREFEXTNO:
741    OS << Value;
742    break;
743  case DT_PLTRELSZ:
744  case DT_RELASZ:
745  case DT_RELAENT:
746  case DT_STRSZ:
747  case DT_SYMENT:
748  case DT_RELSZ:
749  case DT_RELENT:
750  case DT_INIT_ARRAYSZ:
751  case DT_FINI_ARRAYSZ:
752  case DT_PREINIT_ARRAYSZ:
753    OS << Value << " (bytes)";
754    break;
755  case DT_NEEDED:
756    OS << "SharedLibrary (" << O->getDynamicString(Value) << ")";
757    break;
758  case DT_SONAME:
759    OS << "LibrarySoname (" << O->getDynamicString(Value) << ")";
760    break;
761  case DT_RPATH:
762  case DT_RUNPATH:
763    OS << O->getDynamicString(Value);
764    break;
765  }
766}
767
768template<class ELFT>
769void ELFDumper<ELFT>::printUnwindInfo() {
770  W.startLine() << "UnwindInfo not implemented.\n";
771}
772
773template<class ELFT>
774void ELFDumper<ELFT>::printDynamicTable() {
775  typedef typename ELFO::Elf_Dyn_Iter EDI;
776  EDI Start = Obj->begin_dynamic_table(), End = Obj->end_dynamic_table(true);
777
778  if (Start == End)
779    return;
780
781  ptrdiff_t Total = std::distance(Start, End);
782  raw_ostream &OS = W.getOStream();
783  W.startLine() << "DynamicSection [ (" << Total << " entries)\n";
784
785  bool Is64 = ELFT::Is64Bits;
786
787  W.startLine()
788     << "  Tag" << (Is64 ? "                " : "        ") << "Type"
789     << "                 " << "Name/Value\n";
790  for (; Start != End; ++Start) {
791    W.startLine()
792       << "  "
793       << format(Is64 ? "0x%016" PRIX64 : "0x%08" PRIX64, Start->getTag())
794       << " " << format("%-21s", getTypeString(Start->getTag()));
795    printValue(Obj, Start->getTag(), Start->getVal(), Is64, OS);
796    OS << "\n";
797  }
798
799  W.startLine() << "]\n";
800}
801
802template<class ELFT>
803void ELFDumper<ELFT>::printNeededLibraries() {
804  ListScope D(W, "NeededLibraries");
805
806  typedef std::vector<StringRef> LibsTy;
807  LibsTy Libs;
808
809  for (typename ELFO::Elf_Dyn_Iter DynI = Obj->begin_dynamic_table(),
810                                   DynE = Obj->end_dynamic_table();
811       DynI != DynE; ++DynI)
812    if (DynI->d_tag == ELF::DT_NEEDED)
813      Libs.push_back(Obj->getDynamicString(DynI->d_un.d_val));
814
815  std::stable_sort(Libs.begin(), Libs.end());
816
817  for (LibsTy::const_iterator I = Libs.begin(), E = Libs.end(); I != E; ++I) {
818    outs() << "  " << *I << "\n";
819  }
820}
821
822template<class ELFT>
823void ELFDumper<ELFT>::printProgramHeaders() {
824  ListScope L(W, "ProgramHeaders");
825
826  for (typename ELFO::Elf_Phdr_Iter PI = Obj->begin_program_headers(),
827                                    PE = Obj->end_program_headers();
828                                    PI != PE; ++PI) {
829    DictScope P(W, "ProgramHeader");
830    W.printHex   ("Type",
831                  getElfSegmentType(Obj->getHeader()->e_machine, PI->p_type),
832                  PI->p_type);
833    W.printHex   ("Offset", PI->p_offset);
834    W.printHex   ("VirtualAddress", PI->p_vaddr);
835    W.printHex   ("PhysicalAddress", PI->p_paddr);
836    W.printNumber("FileSize", PI->p_filesz);
837    W.printNumber("MemSize", PI->p_memsz);
838    W.printFlags ("Flags", PI->p_flags, makeArrayRef(ElfSegmentFlags));
839    W.printNumber("Alignment", PI->p_align);
840  }
841}
842