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/Optional.h"
22 #include "llvm/ADT/SmallString.h"
23 #include "llvm/ADT/StringExtras.h"
24 #include "llvm/Object/ELFObjectFile.h"
25 #include "llvm/Support/ARMBuildAttributes.h"
26 #include "llvm/Support/Compiler.h"
27 #include "llvm/Support/Format.h"
28 #include "llvm/Support/MathExtras.h"
29 #include "llvm/Support/raw_ostream.h"
30
31 using namespace llvm;
32 using namespace llvm::object;
33 using namespace ELF;
34
35 #define LLVM_READOBJ_ENUM_CASE(ns, enum) \
36 case ns::enum: return #enum;
37
38 namespace {
39
40 template<typename ELFT>
41 class ELFDumper : public ObjDumper {
42 public:
ELFDumper(const ELFFile<ELFT> * Obj,StreamWriter & Writer)43 ELFDumper(const ELFFile<ELFT> *Obj, StreamWriter &Writer)
44 : ObjDumper(Writer), Obj(Obj) {}
45
46 void printFileHeaders() override;
47 void printSections() override;
48 void printRelocations() override;
49 void printSymbols() override;
50 void printDynamicSymbols() override;
51 void printUnwindInfo() override;
52
53 void printDynamicTable() override;
54 void printNeededLibraries() override;
55 void printProgramHeaders() override;
56
57 void printAttributes() override;
58 void printMipsPLTGOT() override;
59
60 private:
61 typedef ELFFile<ELFT> ELFO;
62 typedef typename ELFO::Elf_Shdr Elf_Shdr;
63 typedef typename ELFO::Elf_Sym Elf_Sym;
64
65 void printSymbol(typename ELFO::Elf_Sym_Iter Symbol);
66
67 void printRelocations(const Elf_Shdr *Sec);
68 void printRelocation(const Elf_Shdr *Sec, typename ELFO::Elf_Rela Rel);
69
70 const ELFO *Obj;
71 };
72
errorOrDefault(ErrorOr<T> Val,T Default=T ())73 template <class T> T errorOrDefault(ErrorOr<T> Val, T Default = T()) {
74 if (!Val) {
75 error(Val.getError());
76 return Default;
77 }
78
79 return *Val;
80 }
81 } // namespace
82
83 namespace llvm {
84
85 template <class ELFT>
createELFDumper(const ELFFile<ELFT> * Obj,StreamWriter & Writer,std::unique_ptr<ObjDumper> & Result)86 static std::error_code createELFDumper(const ELFFile<ELFT> *Obj,
87 StreamWriter &Writer,
88 std::unique_ptr<ObjDumper> &Result) {
89 Result.reset(new ELFDumper<ELFT>(Obj, Writer));
90 return readobj_error::success;
91 }
92
createELFDumper(const object::ObjectFile * Obj,StreamWriter & Writer,std::unique_ptr<ObjDumper> & Result)93 std::error_code createELFDumper(const object::ObjectFile *Obj,
94 StreamWriter &Writer,
95 std::unique_ptr<ObjDumper> &Result) {
96 // Little-endian 32-bit
97 if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
98 return createELFDumper(ELFObj->getELFFile(), Writer, Result);
99
100 // Big-endian 32-bit
101 if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
102 return createELFDumper(ELFObj->getELFFile(), Writer, Result);
103
104 // Little-endian 64-bit
105 if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
106 return createELFDumper(ELFObj->getELFFile(), Writer, Result);
107
108 // Big-endian 64-bit
109 if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
110 return createELFDumper(ELFObj->getELFFile(), Writer, Result);
111
112 return readobj_error::unsupported_obj_file_format;
113 }
114
115 } // namespace llvm
116
117 template <typename ELFO>
getFullSymbolName(const ELFO & Obj,typename ELFO::Elf_Sym_Iter Symbol)118 static std::string getFullSymbolName(const ELFO &Obj,
119 typename ELFO::Elf_Sym_Iter Symbol) {
120 StringRef SymbolName = errorOrDefault(Obj.getSymbolName(Symbol));
121 if (!Symbol.isDynamic())
122 return SymbolName;
123
124 std::string FullSymbolName(SymbolName);
125
126 bool IsDefault;
127 ErrorOr<StringRef> Version =
128 Obj.getSymbolVersion(nullptr, &*Symbol, IsDefault);
129 if (Version) {
130 FullSymbolName += (IsDefault ? "@@" : "@");
131 FullSymbolName += *Version;
132 } else
133 error(Version.getError());
134 return FullSymbolName;
135 }
136
137 template <typename ELFO>
138 static void
getSectionNameIndex(const ELFO & Obj,typename ELFO::Elf_Sym_Iter Symbol,StringRef & SectionName,unsigned & SectionIndex)139 getSectionNameIndex(const ELFO &Obj, typename ELFO::Elf_Sym_Iter Symbol,
140 StringRef &SectionName, unsigned &SectionIndex) {
141 SectionIndex = Symbol->st_shndx;
142 if (SectionIndex == SHN_UNDEF) {
143 SectionName = "Undefined";
144 } else if (SectionIndex >= SHN_LOPROC && SectionIndex <= SHN_HIPROC) {
145 SectionName = "Processor Specific";
146 } else if (SectionIndex >= SHN_LOOS && SectionIndex <= SHN_HIOS) {
147 SectionName = "Operating System Specific";
148 } else if (SectionIndex > SHN_HIOS && SectionIndex < SHN_ABS) {
149 SectionName = "Reserved";
150 } else if (SectionIndex == SHN_ABS) {
151 SectionName = "Absolute";
152 } else if (SectionIndex == SHN_COMMON) {
153 SectionName = "Common";
154 } else {
155 if (SectionIndex == SHN_XINDEX)
156 SectionIndex = Obj.getSymbolTableIndex(&*Symbol);
157 assert(SectionIndex != SHN_XINDEX &&
158 "getSymbolTableIndex should handle this");
159 const typename ELFO::Elf_Shdr *Sec = Obj.getSection(SectionIndex);
160 SectionName = errorOrDefault(Obj.getSectionName(Sec));
161 }
162 }
163
164 template <class ELFT>
165 static const typename ELFFile<ELFT>::Elf_Shdr *
findSectionByAddress(const ELFFile<ELFT> * Obj,uint64_t Addr)166 findSectionByAddress(const ELFFile<ELFT> *Obj, uint64_t Addr) {
167 for (const auto &Shdr : Obj->sections())
168 if (Shdr.sh_addr == Addr)
169 return &Shdr;
170 return nullptr;
171 }
172
173 static const EnumEntry<unsigned> ElfClass[] = {
174 { "None", ELF::ELFCLASSNONE },
175 { "32-bit", ELF::ELFCLASS32 },
176 { "64-bit", ELF::ELFCLASS64 },
177 };
178
179 static const EnumEntry<unsigned> ElfDataEncoding[] = {
180 { "None", ELF::ELFDATANONE },
181 { "LittleEndian", ELF::ELFDATA2LSB },
182 { "BigEndian", ELF::ELFDATA2MSB },
183 };
184
185 static const EnumEntry<unsigned> ElfObjectFileType[] = {
186 { "None", ELF::ET_NONE },
187 { "Relocatable", ELF::ET_REL },
188 { "Executable", ELF::ET_EXEC },
189 { "SharedObject", ELF::ET_DYN },
190 { "Core", ELF::ET_CORE },
191 };
192
193 static const EnumEntry<unsigned> ElfOSABI[] = {
194 { "SystemV", ELF::ELFOSABI_NONE },
195 { "HPUX", ELF::ELFOSABI_HPUX },
196 { "NetBSD", ELF::ELFOSABI_NETBSD },
197 { "GNU/Linux", ELF::ELFOSABI_LINUX },
198 { "GNU/Hurd", ELF::ELFOSABI_HURD },
199 { "Solaris", ELF::ELFOSABI_SOLARIS },
200 { "AIX", ELF::ELFOSABI_AIX },
201 { "IRIX", ELF::ELFOSABI_IRIX },
202 { "FreeBSD", ELF::ELFOSABI_FREEBSD },
203 { "TRU64", ELF::ELFOSABI_TRU64 },
204 { "Modesto", ELF::ELFOSABI_MODESTO },
205 { "OpenBSD", ELF::ELFOSABI_OPENBSD },
206 { "OpenVMS", ELF::ELFOSABI_OPENVMS },
207 { "NSK", ELF::ELFOSABI_NSK },
208 { "AROS", ELF::ELFOSABI_AROS },
209 { "FenixOS", ELF::ELFOSABI_FENIXOS },
210 { "C6000_ELFABI", ELF::ELFOSABI_C6000_ELFABI },
211 { "C6000_LINUX" , ELF::ELFOSABI_C6000_LINUX },
212 { "ARM", ELF::ELFOSABI_ARM },
213 { "Standalone" , ELF::ELFOSABI_STANDALONE }
214 };
215
216 static const EnumEntry<unsigned> ElfMachineType[] = {
217 LLVM_READOBJ_ENUM_ENT(ELF, EM_NONE ),
218 LLVM_READOBJ_ENUM_ENT(ELF, EM_M32 ),
219 LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARC ),
220 LLVM_READOBJ_ENUM_ENT(ELF, EM_386 ),
221 LLVM_READOBJ_ENUM_ENT(ELF, EM_68K ),
222 LLVM_READOBJ_ENUM_ENT(ELF, EM_88K ),
223 LLVM_READOBJ_ENUM_ENT(ELF, EM_486 ),
224 LLVM_READOBJ_ENUM_ENT(ELF, EM_860 ),
225 LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS ),
226 LLVM_READOBJ_ENUM_ENT(ELF, EM_S370 ),
227 LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS_RS3_LE ),
228 LLVM_READOBJ_ENUM_ENT(ELF, EM_PARISC ),
229 LLVM_READOBJ_ENUM_ENT(ELF, EM_VPP500 ),
230 LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARC32PLUS ),
231 LLVM_READOBJ_ENUM_ENT(ELF, EM_960 ),
232 LLVM_READOBJ_ENUM_ENT(ELF, EM_PPC ),
233 LLVM_READOBJ_ENUM_ENT(ELF, EM_PPC64 ),
234 LLVM_READOBJ_ENUM_ENT(ELF, EM_S390 ),
235 LLVM_READOBJ_ENUM_ENT(ELF, EM_SPU ),
236 LLVM_READOBJ_ENUM_ENT(ELF, EM_V800 ),
237 LLVM_READOBJ_ENUM_ENT(ELF, EM_FR20 ),
238 LLVM_READOBJ_ENUM_ENT(ELF, EM_RH32 ),
239 LLVM_READOBJ_ENUM_ENT(ELF, EM_RCE ),
240 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARM ),
241 LLVM_READOBJ_ENUM_ENT(ELF, EM_ALPHA ),
242 LLVM_READOBJ_ENUM_ENT(ELF, EM_SH ),
243 LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARCV9 ),
244 LLVM_READOBJ_ENUM_ENT(ELF, EM_TRICORE ),
245 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC ),
246 LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_300 ),
247 LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_300H ),
248 LLVM_READOBJ_ENUM_ENT(ELF, EM_H8S ),
249 LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_500 ),
250 LLVM_READOBJ_ENUM_ENT(ELF, EM_IA_64 ),
251 LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS_X ),
252 LLVM_READOBJ_ENUM_ENT(ELF, EM_COLDFIRE ),
253 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC12 ),
254 LLVM_READOBJ_ENUM_ENT(ELF, EM_MMA ),
255 LLVM_READOBJ_ENUM_ENT(ELF, EM_PCP ),
256 LLVM_READOBJ_ENUM_ENT(ELF, EM_NCPU ),
257 LLVM_READOBJ_ENUM_ENT(ELF, EM_NDR1 ),
258 LLVM_READOBJ_ENUM_ENT(ELF, EM_STARCORE ),
259 LLVM_READOBJ_ENUM_ENT(ELF, EM_ME16 ),
260 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST100 ),
261 LLVM_READOBJ_ENUM_ENT(ELF, EM_TINYJ ),
262 LLVM_READOBJ_ENUM_ENT(ELF, EM_X86_64 ),
263 LLVM_READOBJ_ENUM_ENT(ELF, EM_PDSP ),
264 LLVM_READOBJ_ENUM_ENT(ELF, EM_PDP10 ),
265 LLVM_READOBJ_ENUM_ENT(ELF, EM_PDP11 ),
266 LLVM_READOBJ_ENUM_ENT(ELF, EM_FX66 ),
267 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST9PLUS ),
268 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST7 ),
269 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC16 ),
270 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC11 ),
271 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC08 ),
272 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC05 ),
273 LLVM_READOBJ_ENUM_ENT(ELF, EM_SVX ),
274 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST19 ),
275 LLVM_READOBJ_ENUM_ENT(ELF, EM_VAX ),
276 LLVM_READOBJ_ENUM_ENT(ELF, EM_CRIS ),
277 LLVM_READOBJ_ENUM_ENT(ELF, EM_JAVELIN ),
278 LLVM_READOBJ_ENUM_ENT(ELF, EM_FIREPATH ),
279 LLVM_READOBJ_ENUM_ENT(ELF, EM_ZSP ),
280 LLVM_READOBJ_ENUM_ENT(ELF, EM_MMIX ),
281 LLVM_READOBJ_ENUM_ENT(ELF, EM_HUANY ),
282 LLVM_READOBJ_ENUM_ENT(ELF, EM_PRISM ),
283 LLVM_READOBJ_ENUM_ENT(ELF, EM_AVR ),
284 LLVM_READOBJ_ENUM_ENT(ELF, EM_FR30 ),
285 LLVM_READOBJ_ENUM_ENT(ELF, EM_D10V ),
286 LLVM_READOBJ_ENUM_ENT(ELF, EM_D30V ),
287 LLVM_READOBJ_ENUM_ENT(ELF, EM_V850 ),
288 LLVM_READOBJ_ENUM_ENT(ELF, EM_M32R ),
289 LLVM_READOBJ_ENUM_ENT(ELF, EM_MN10300 ),
290 LLVM_READOBJ_ENUM_ENT(ELF, EM_MN10200 ),
291 LLVM_READOBJ_ENUM_ENT(ELF, EM_PJ ),
292 LLVM_READOBJ_ENUM_ENT(ELF, EM_OPENRISC ),
293 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC_COMPACT ),
294 LLVM_READOBJ_ENUM_ENT(ELF, EM_XTENSA ),
295 LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE ),
296 LLVM_READOBJ_ENUM_ENT(ELF, EM_TMM_GPP ),
297 LLVM_READOBJ_ENUM_ENT(ELF, EM_NS32K ),
298 LLVM_READOBJ_ENUM_ENT(ELF, EM_TPC ),
299 LLVM_READOBJ_ENUM_ENT(ELF, EM_SNP1K ),
300 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST200 ),
301 LLVM_READOBJ_ENUM_ENT(ELF, EM_IP2K ),
302 LLVM_READOBJ_ENUM_ENT(ELF, EM_MAX ),
303 LLVM_READOBJ_ENUM_ENT(ELF, EM_CR ),
304 LLVM_READOBJ_ENUM_ENT(ELF, EM_F2MC16 ),
305 LLVM_READOBJ_ENUM_ENT(ELF, EM_MSP430 ),
306 LLVM_READOBJ_ENUM_ENT(ELF, EM_BLACKFIN ),
307 LLVM_READOBJ_ENUM_ENT(ELF, EM_SE_C33 ),
308 LLVM_READOBJ_ENUM_ENT(ELF, EM_SEP ),
309 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARCA ),
310 LLVM_READOBJ_ENUM_ENT(ELF, EM_UNICORE ),
311 LLVM_READOBJ_ENUM_ENT(ELF, EM_EXCESS ),
312 LLVM_READOBJ_ENUM_ENT(ELF, EM_DXP ),
313 LLVM_READOBJ_ENUM_ENT(ELF, EM_ALTERA_NIOS2 ),
314 LLVM_READOBJ_ENUM_ENT(ELF, EM_CRX ),
315 LLVM_READOBJ_ENUM_ENT(ELF, EM_XGATE ),
316 LLVM_READOBJ_ENUM_ENT(ELF, EM_C166 ),
317 LLVM_READOBJ_ENUM_ENT(ELF, EM_M16C ),
318 LLVM_READOBJ_ENUM_ENT(ELF, EM_DSPIC30F ),
319 LLVM_READOBJ_ENUM_ENT(ELF, EM_CE ),
320 LLVM_READOBJ_ENUM_ENT(ELF, EM_M32C ),
321 LLVM_READOBJ_ENUM_ENT(ELF, EM_TSK3000 ),
322 LLVM_READOBJ_ENUM_ENT(ELF, EM_RS08 ),
323 LLVM_READOBJ_ENUM_ENT(ELF, EM_SHARC ),
324 LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG2 ),
325 LLVM_READOBJ_ENUM_ENT(ELF, EM_SCORE7 ),
326 LLVM_READOBJ_ENUM_ENT(ELF, EM_DSP24 ),
327 LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE3 ),
328 LLVM_READOBJ_ENUM_ENT(ELF, EM_LATTICEMICO32),
329 LLVM_READOBJ_ENUM_ENT(ELF, EM_SE_C17 ),
330 LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C6000 ),
331 LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C2000 ),
332 LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C5500 ),
333 LLVM_READOBJ_ENUM_ENT(ELF, EM_MMDSP_PLUS ),
334 LLVM_READOBJ_ENUM_ENT(ELF, EM_CYPRESS_M8C ),
335 LLVM_READOBJ_ENUM_ENT(ELF, EM_R32C ),
336 LLVM_READOBJ_ENUM_ENT(ELF, EM_TRIMEDIA ),
337 LLVM_READOBJ_ENUM_ENT(ELF, EM_HEXAGON ),
338 LLVM_READOBJ_ENUM_ENT(ELF, EM_8051 ),
339 LLVM_READOBJ_ENUM_ENT(ELF, EM_STXP7X ),
340 LLVM_READOBJ_ENUM_ENT(ELF, EM_NDS32 ),
341 LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG1 ),
342 LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG1X ),
343 LLVM_READOBJ_ENUM_ENT(ELF, EM_MAXQ30 ),
344 LLVM_READOBJ_ENUM_ENT(ELF, EM_XIMO16 ),
345 LLVM_READOBJ_ENUM_ENT(ELF, EM_MANIK ),
346 LLVM_READOBJ_ENUM_ENT(ELF, EM_CRAYNV2 ),
347 LLVM_READOBJ_ENUM_ENT(ELF, EM_RX ),
348 LLVM_READOBJ_ENUM_ENT(ELF, EM_METAG ),
349 LLVM_READOBJ_ENUM_ENT(ELF, EM_MCST_ELBRUS ),
350 LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG16 ),
351 LLVM_READOBJ_ENUM_ENT(ELF, EM_CR16 ),
352 LLVM_READOBJ_ENUM_ENT(ELF, EM_ETPU ),
353 LLVM_READOBJ_ENUM_ENT(ELF, EM_SLE9X ),
354 LLVM_READOBJ_ENUM_ENT(ELF, EM_L10M ),
355 LLVM_READOBJ_ENUM_ENT(ELF, EM_K10M ),
356 LLVM_READOBJ_ENUM_ENT(ELF, EM_AARCH64 ),
357 LLVM_READOBJ_ENUM_ENT(ELF, EM_AVR32 ),
358 LLVM_READOBJ_ENUM_ENT(ELF, EM_STM8 ),
359 LLVM_READOBJ_ENUM_ENT(ELF, EM_TILE64 ),
360 LLVM_READOBJ_ENUM_ENT(ELF, EM_TILEPRO ),
361 LLVM_READOBJ_ENUM_ENT(ELF, EM_CUDA ),
362 LLVM_READOBJ_ENUM_ENT(ELF, EM_TILEGX ),
363 LLVM_READOBJ_ENUM_ENT(ELF, EM_CLOUDSHIELD ),
364 LLVM_READOBJ_ENUM_ENT(ELF, EM_COREA_1ST ),
365 LLVM_READOBJ_ENUM_ENT(ELF, EM_COREA_2ND ),
366 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC_COMPACT2 ),
367 LLVM_READOBJ_ENUM_ENT(ELF, EM_OPEN8 ),
368 LLVM_READOBJ_ENUM_ENT(ELF, EM_RL78 ),
369 LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE5 ),
370 LLVM_READOBJ_ENUM_ENT(ELF, EM_78KOR ),
371 LLVM_READOBJ_ENUM_ENT(ELF, EM_56800EX )
372 };
373
374 static const EnumEntry<unsigned> ElfSymbolBindings[] = {
375 { "Local", ELF::STB_LOCAL },
376 { "Global", ELF::STB_GLOBAL },
377 { "Weak", ELF::STB_WEAK }
378 };
379
380 static const EnumEntry<unsigned> ElfSymbolTypes[] = {
381 { "None", ELF::STT_NOTYPE },
382 { "Object", ELF::STT_OBJECT },
383 { "Function", ELF::STT_FUNC },
384 { "Section", ELF::STT_SECTION },
385 { "File", ELF::STT_FILE },
386 { "Common", ELF::STT_COMMON },
387 { "TLS", ELF::STT_TLS },
388 { "GNU_IFunc", ELF::STT_GNU_IFUNC }
389 };
390
getElfSectionType(unsigned Arch,unsigned Type)391 static const char *getElfSectionType(unsigned Arch, unsigned Type) {
392 switch (Arch) {
393 case ELF::EM_ARM:
394 switch (Type) {
395 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_EXIDX);
396 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_PREEMPTMAP);
397 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_ATTRIBUTES);
398 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_DEBUGOVERLAY);
399 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_OVERLAYSECTION);
400 }
401 case ELF::EM_HEXAGON:
402 switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_HEX_ORDERED); }
403 case ELF::EM_X86_64:
404 switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_X86_64_UNWIND); }
405 case ELF::EM_MIPS:
406 case ELF::EM_MIPS_RS3_LE:
407 switch (Type) {
408 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_REGINFO);
409 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_OPTIONS);
410 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_ABIFLAGS);
411 }
412 }
413
414 switch (Type) {
415 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NULL );
416 LLVM_READOBJ_ENUM_CASE(ELF, SHT_PROGBITS );
417 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB );
418 LLVM_READOBJ_ENUM_CASE(ELF, SHT_STRTAB );
419 LLVM_READOBJ_ENUM_CASE(ELF, SHT_RELA );
420 LLVM_READOBJ_ENUM_CASE(ELF, SHT_HASH );
421 LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNAMIC );
422 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOTE );
423 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOBITS );
424 LLVM_READOBJ_ENUM_CASE(ELF, SHT_REL );
425 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SHLIB );
426 LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNSYM );
427 LLVM_READOBJ_ENUM_CASE(ELF, SHT_INIT_ARRAY );
428 LLVM_READOBJ_ENUM_CASE(ELF, SHT_FINI_ARRAY );
429 LLVM_READOBJ_ENUM_CASE(ELF, SHT_PREINIT_ARRAY );
430 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GROUP );
431 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB_SHNDX );
432 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_ATTRIBUTES );
433 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_HASH );
434 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verdef );
435 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verneed );
436 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_versym );
437 default: return "";
438 }
439 }
440
441 static const EnumEntry<unsigned> ElfSectionFlags[] = {
442 LLVM_READOBJ_ENUM_ENT(ELF, SHF_WRITE ),
443 LLVM_READOBJ_ENUM_ENT(ELF, SHF_ALLOC ),
444 LLVM_READOBJ_ENUM_ENT(ELF, SHF_EXCLUDE ),
445 LLVM_READOBJ_ENUM_ENT(ELF, SHF_EXECINSTR ),
446 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MERGE ),
447 LLVM_READOBJ_ENUM_ENT(ELF, SHF_STRINGS ),
448 LLVM_READOBJ_ENUM_ENT(ELF, SHF_INFO_LINK ),
449 LLVM_READOBJ_ENUM_ENT(ELF, SHF_LINK_ORDER ),
450 LLVM_READOBJ_ENUM_ENT(ELF, SHF_OS_NONCONFORMING),
451 LLVM_READOBJ_ENUM_ENT(ELF, SHF_GROUP ),
452 LLVM_READOBJ_ENUM_ENT(ELF, SHF_TLS ),
453 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_CP_SECTION),
454 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_DP_SECTION),
455 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP )
456 };
457
getElfSegmentType(unsigned Arch,unsigned Type)458 static const char *getElfSegmentType(unsigned Arch, unsigned Type) {
459 // Check potentially overlapped processor-specific
460 // program header type.
461 switch (Arch) {
462 case ELF::EM_ARM:
463 switch (Type) {
464 LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX);
465 }
466 case ELF::EM_MIPS:
467 case ELF::EM_MIPS_RS3_LE:
468 switch (Type) {
469 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO);
470 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC);
471 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS);
472 }
473 }
474
475 switch (Type) {
476 LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL );
477 LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD );
478 LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC);
479 LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP );
480 LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE );
481 LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB );
482 LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR );
483 LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS );
484
485 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME);
486 LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND);
487
488 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK);
489 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO);
490 default: return "";
491 }
492 }
493
494 static const EnumEntry<unsigned> ElfSegmentFlags[] = {
495 LLVM_READOBJ_ENUM_ENT(ELF, PF_X),
496 LLVM_READOBJ_ENUM_ENT(ELF, PF_W),
497 LLVM_READOBJ_ENUM_ENT(ELF, PF_R)
498 };
499
500 static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = {
501 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NOREORDER),
502 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_PIC),
503 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_CPIC),
504 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI2),
505 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_32BITMODE),
506 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NAN2008),
507 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O32),
508 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MICROMIPS),
509 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_M16),
510 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_1),
511 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_2),
512 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_3),
513 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_4),
514 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_5),
515 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32),
516 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64),
517 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R2),
518 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R2),
519 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R6),
520 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R6)
521 };
522
523 template<class ELFT>
printFileHeaders()524 void ELFDumper<ELFT>::printFileHeaders() {
525 const typename ELFO::Elf_Ehdr *Header = Obj->getHeader();
526
527 {
528 DictScope D(W, "ElfHeader");
529 {
530 DictScope D(W, "Ident");
531 W.printBinary("Magic", makeArrayRef(Header->e_ident).slice(ELF::EI_MAG0,
532 4));
533 W.printEnum ("Class", Header->e_ident[ELF::EI_CLASS],
534 makeArrayRef(ElfClass));
535 W.printEnum ("DataEncoding", Header->e_ident[ELF::EI_DATA],
536 makeArrayRef(ElfDataEncoding));
537 W.printNumber("FileVersion", Header->e_ident[ELF::EI_VERSION]);
538 W.printEnum ("OS/ABI", Header->e_ident[ELF::EI_OSABI],
539 makeArrayRef(ElfOSABI));
540 W.printNumber("ABIVersion", Header->e_ident[ELF::EI_ABIVERSION]);
541 W.printBinary("Unused", makeArrayRef(Header->e_ident).slice(ELF::EI_PAD));
542 }
543
544 W.printEnum ("Type", Header->e_type, makeArrayRef(ElfObjectFileType));
545 W.printEnum ("Machine", Header->e_machine, makeArrayRef(ElfMachineType));
546 W.printNumber("Version", Header->e_version);
547 W.printHex ("Entry", Header->e_entry);
548 W.printHex ("ProgramHeaderOffset", Header->e_phoff);
549 W.printHex ("SectionHeaderOffset", Header->e_shoff);
550 if (Header->e_machine == EM_MIPS)
551 W.printFlags("Flags", Header->e_flags, makeArrayRef(ElfHeaderMipsFlags),
552 unsigned(ELF::EF_MIPS_ARCH));
553 else
554 W.printFlags("Flags", Header->e_flags);
555 W.printNumber("HeaderSize", Header->e_ehsize);
556 W.printNumber("ProgramHeaderEntrySize", Header->e_phentsize);
557 W.printNumber("ProgramHeaderCount", Header->e_phnum);
558 W.printNumber("SectionHeaderEntrySize", Header->e_shentsize);
559 W.printNumber("SectionHeaderCount", Header->e_shnum);
560 W.printNumber("StringTableSectionIndex", Header->e_shstrndx);
561 }
562 }
563
564 template<class ELFT>
printSections()565 void ELFDumper<ELFT>::printSections() {
566 ListScope SectionsD(W, "Sections");
567
568 int SectionIndex = -1;
569 for (typename ELFO::Elf_Shdr_Iter SecI = Obj->begin_sections(),
570 SecE = Obj->end_sections();
571 SecI != SecE; ++SecI) {
572 ++SectionIndex;
573
574 const Elf_Shdr *Section = &*SecI;
575 StringRef Name = errorOrDefault(Obj->getSectionName(Section));
576
577 DictScope SectionD(W, "Section");
578 W.printNumber("Index", SectionIndex);
579 W.printNumber("Name", Name, Section->sh_name);
580 W.printHex("Type",
581 getElfSectionType(Obj->getHeader()->e_machine, Section->sh_type),
582 Section->sh_type);
583 W.printFlags ("Flags", Section->sh_flags, makeArrayRef(ElfSectionFlags));
584 W.printHex ("Address", Section->sh_addr);
585 W.printHex ("Offset", Section->sh_offset);
586 W.printNumber("Size", Section->sh_size);
587 W.printNumber("Link", Section->sh_link);
588 W.printNumber("Info", Section->sh_info);
589 W.printNumber("AddressAlignment", Section->sh_addralign);
590 W.printNumber("EntrySize", Section->sh_entsize);
591
592 if (opts::SectionRelocations) {
593 ListScope D(W, "Relocations");
594 printRelocations(Section);
595 }
596
597 if (opts::SectionSymbols) {
598 ListScope D(W, "Symbols");
599 for (typename ELFO::Elf_Sym_Iter SymI = Obj->begin_symbols(),
600 SymE = Obj->end_symbols();
601 SymI != SymE; ++SymI) {
602 if (Obj->getSection(&*SymI) == Section)
603 printSymbol(SymI);
604 }
605 }
606
607 if (opts::SectionData && Section->sh_type != ELF::SHT_NOBITS) {
608 ArrayRef<uint8_t> Data = errorOrDefault(Obj->getSectionContents(Section));
609 W.printBinaryBlock("SectionData",
610 StringRef((const char *)Data.data(), Data.size()));
611 }
612 }
613 }
614
615 template<class ELFT>
printRelocations()616 void ELFDumper<ELFT>::printRelocations() {
617 ListScope D(W, "Relocations");
618
619 int SectionNumber = -1;
620 for (typename ELFO::Elf_Shdr_Iter SecI = Obj->begin_sections(),
621 SecE = Obj->end_sections();
622 SecI != SecE; ++SecI) {
623 ++SectionNumber;
624
625 if (SecI->sh_type != ELF::SHT_REL && SecI->sh_type != ELF::SHT_RELA)
626 continue;
627
628 StringRef Name = errorOrDefault(Obj->getSectionName(&*SecI));
629
630 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n";
631 W.indent();
632
633 printRelocations(&*SecI);
634
635 W.unindent();
636 W.startLine() << "}\n";
637 }
638 }
639
640 template <class ELFT>
printRelocations(const Elf_Shdr * Sec)641 void ELFDumper<ELFT>::printRelocations(const Elf_Shdr *Sec) {
642 switch (Sec->sh_type) {
643 case ELF::SHT_REL:
644 for (typename ELFO::Elf_Rel_Iter RI = Obj->begin_rel(Sec),
645 RE = Obj->end_rel(Sec);
646 RI != RE; ++RI) {
647 typename ELFO::Elf_Rela Rela;
648 Rela.r_offset = RI->r_offset;
649 Rela.r_info = RI->r_info;
650 Rela.r_addend = 0;
651 printRelocation(Sec, Rela);
652 }
653 break;
654 case ELF::SHT_RELA:
655 for (typename ELFO::Elf_Rela_Iter RI = Obj->begin_rela(Sec),
656 RE = Obj->end_rela(Sec);
657 RI != RE; ++RI) {
658 printRelocation(Sec, *RI);
659 }
660 break;
661 }
662 }
663
664 template <class ELFT>
printRelocation(const Elf_Shdr * Sec,typename ELFO::Elf_Rela Rel)665 void ELFDumper<ELFT>::printRelocation(const Elf_Shdr *Sec,
666 typename ELFO::Elf_Rela Rel) {
667 SmallString<32> RelocName;
668 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName);
669 StringRef SymbolName;
670 std::pair<const Elf_Shdr *, const Elf_Sym *> Sym =
671 Obj->getRelocationSymbol(Sec, &Rel);
672 if (Sym.first)
673 SymbolName = errorOrDefault(Obj->getSymbolName(Sym.first, Sym.second));
674
675 if (opts::ExpandRelocs) {
676 DictScope Group(W, "Relocation");
677 W.printHex("Offset", Rel.r_offset);
678 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL()));
679 W.printNumber("Symbol", SymbolName.size() > 0 ? SymbolName : "-",
680 Rel.getSymbol(Obj->isMips64EL()));
681 W.printHex("Addend", Rel.r_addend);
682 } else {
683 raw_ostream& OS = W.startLine();
684 OS << W.hex(Rel.r_offset)
685 << " " << RelocName
686 << " " << (SymbolName.size() > 0 ? SymbolName : "-")
687 << " " << W.hex(Rel.r_addend)
688 << "\n";
689 }
690 }
691
692 template<class ELFT>
printSymbols()693 void ELFDumper<ELFT>::printSymbols() {
694 ListScope Group(W, "Symbols");
695 for (typename ELFO::Elf_Sym_Iter SymI = Obj->begin_symbols(),
696 SymE = Obj->end_symbols();
697 SymI != SymE; ++SymI) {
698 printSymbol(SymI);
699 }
700 }
701
702 template<class ELFT>
printDynamicSymbols()703 void ELFDumper<ELFT>::printDynamicSymbols() {
704 ListScope Group(W, "DynamicSymbols");
705
706 for (typename ELFO::Elf_Sym_Iter SymI = Obj->begin_dynamic_symbols(),
707 SymE = Obj->end_dynamic_symbols();
708 SymI != SymE; ++SymI) {
709 printSymbol(SymI);
710 }
711 }
712
713 template <class ELFT>
printSymbol(typename ELFO::Elf_Sym_Iter Symbol)714 void ELFDumper<ELFT>::printSymbol(typename ELFO::Elf_Sym_Iter Symbol) {
715 unsigned SectionIndex = 0;
716 StringRef SectionName;
717 getSectionNameIndex(*Obj, Symbol, SectionName, SectionIndex);
718 std::string FullSymbolName = getFullSymbolName(*Obj, Symbol);
719
720 DictScope D(W, "Symbol");
721 W.printNumber("Name", FullSymbolName, Symbol->st_name);
722 W.printHex ("Value", Symbol->st_value);
723 W.printNumber("Size", Symbol->st_size);
724 W.printEnum ("Binding", Symbol->getBinding(),
725 makeArrayRef(ElfSymbolBindings));
726 W.printEnum ("Type", Symbol->getType(), makeArrayRef(ElfSymbolTypes));
727 W.printNumber("Other", Symbol->st_other);
728 W.printHex("Section", SectionName, SectionIndex);
729 }
730
731 #define LLVM_READOBJ_TYPE_CASE(name) \
732 case DT_##name: return #name
733
getTypeString(uint64_t Type)734 static const char *getTypeString(uint64_t Type) {
735 switch (Type) {
736 LLVM_READOBJ_TYPE_CASE(BIND_NOW);
737 LLVM_READOBJ_TYPE_CASE(DEBUG);
738 LLVM_READOBJ_TYPE_CASE(FINI);
739 LLVM_READOBJ_TYPE_CASE(FINI_ARRAY);
740 LLVM_READOBJ_TYPE_CASE(FINI_ARRAYSZ);
741 LLVM_READOBJ_TYPE_CASE(FLAGS);
742 LLVM_READOBJ_TYPE_CASE(HASH);
743 LLVM_READOBJ_TYPE_CASE(INIT);
744 LLVM_READOBJ_TYPE_CASE(INIT_ARRAY);
745 LLVM_READOBJ_TYPE_CASE(INIT_ARRAYSZ);
746 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAY);
747 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAYSZ);
748 LLVM_READOBJ_TYPE_CASE(JMPREL);
749 LLVM_READOBJ_TYPE_CASE(NEEDED);
750 LLVM_READOBJ_TYPE_CASE(NULL);
751 LLVM_READOBJ_TYPE_CASE(PLTGOT);
752 LLVM_READOBJ_TYPE_CASE(PLTREL);
753 LLVM_READOBJ_TYPE_CASE(PLTRELSZ);
754 LLVM_READOBJ_TYPE_CASE(REL);
755 LLVM_READOBJ_TYPE_CASE(RELA);
756 LLVM_READOBJ_TYPE_CASE(RELENT);
757 LLVM_READOBJ_TYPE_CASE(RELSZ);
758 LLVM_READOBJ_TYPE_CASE(RELAENT);
759 LLVM_READOBJ_TYPE_CASE(RELASZ);
760 LLVM_READOBJ_TYPE_CASE(RPATH);
761 LLVM_READOBJ_TYPE_CASE(RUNPATH);
762 LLVM_READOBJ_TYPE_CASE(SONAME);
763 LLVM_READOBJ_TYPE_CASE(STRSZ);
764 LLVM_READOBJ_TYPE_CASE(STRTAB);
765 LLVM_READOBJ_TYPE_CASE(SYMBOLIC);
766 LLVM_READOBJ_TYPE_CASE(SYMENT);
767 LLVM_READOBJ_TYPE_CASE(SYMTAB);
768 LLVM_READOBJ_TYPE_CASE(TEXTREL);
769 LLVM_READOBJ_TYPE_CASE(VERNEED);
770 LLVM_READOBJ_TYPE_CASE(VERNEEDNUM);
771 LLVM_READOBJ_TYPE_CASE(VERSYM);
772 LLVM_READOBJ_TYPE_CASE(RELCOUNT);
773 LLVM_READOBJ_TYPE_CASE(GNU_HASH);
774 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_VERSION);
775 LLVM_READOBJ_TYPE_CASE(MIPS_FLAGS);
776 LLVM_READOBJ_TYPE_CASE(MIPS_BASE_ADDRESS);
777 LLVM_READOBJ_TYPE_CASE(MIPS_LOCAL_GOTNO);
778 LLVM_READOBJ_TYPE_CASE(MIPS_SYMTABNO);
779 LLVM_READOBJ_TYPE_CASE(MIPS_UNREFEXTNO);
780 LLVM_READOBJ_TYPE_CASE(MIPS_GOTSYM);
781 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP);
782 LLVM_READOBJ_TYPE_CASE(MIPS_PLTGOT);
783 default: return "unknown";
784 }
785 }
786
787 #undef LLVM_READOBJ_TYPE_CASE
788
789 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \
790 { #enum, prefix##_##enum }
791
792 static const EnumEntry<unsigned> ElfDynamicDTFlags[] = {
793 LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN),
794 LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC),
795 LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL),
796 LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW),
797 LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS)
798 };
799
800 static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = {
801 LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE),
802 LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART),
803 LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT),
804 LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT),
805 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE),
806 LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY),
807 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT),
808 LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS),
809 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT),
810 LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE),
811 LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD),
812 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART),
813 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED),
814 LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD),
815 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF),
816 LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE)
817 };
818
819 #undef LLVM_READOBJ_DT_FLAG_ENT
820
821 template <typename T, typename TFlag>
printFlags(T Value,ArrayRef<EnumEntry<TFlag>> Flags,raw_ostream & OS)822 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) {
823 typedef EnumEntry<TFlag> FlagEntry;
824 typedef SmallVector<FlagEntry, 10> FlagVector;
825 FlagVector SetFlags;
826
827 for (const auto &Flag : Flags) {
828 if (Flag.Value == 0)
829 continue;
830
831 if ((Value & Flag.Value) == Flag.Value)
832 SetFlags.push_back(Flag);
833 }
834
835 for (const auto &Flag : SetFlags) {
836 OS << Flag.Name << " ";
837 }
838 }
839
840 template <class ELFT>
printValue(const ELFFile<ELFT> * O,uint64_t Type,uint64_t Value,bool Is64,raw_ostream & OS)841 static void printValue(const ELFFile<ELFT> *O, uint64_t Type, uint64_t Value,
842 bool Is64, raw_ostream &OS) {
843 switch (Type) {
844 case DT_PLTREL:
845 if (Value == DT_REL) {
846 OS << "REL";
847 break;
848 } else if (Value == DT_RELA) {
849 OS << "RELA";
850 break;
851 }
852 // Fallthrough.
853 case DT_PLTGOT:
854 case DT_HASH:
855 case DT_STRTAB:
856 case DT_SYMTAB:
857 case DT_RELA:
858 case DT_INIT:
859 case DT_FINI:
860 case DT_REL:
861 case DT_JMPREL:
862 case DT_INIT_ARRAY:
863 case DT_FINI_ARRAY:
864 case DT_PREINIT_ARRAY:
865 case DT_DEBUG:
866 case DT_VERNEED:
867 case DT_VERSYM:
868 case DT_GNU_HASH:
869 case DT_NULL:
870 case DT_MIPS_BASE_ADDRESS:
871 case DT_MIPS_GOTSYM:
872 case DT_MIPS_RLD_MAP:
873 case DT_MIPS_PLTGOT:
874 OS << format("0x%" PRIX64, Value);
875 break;
876 case DT_RELCOUNT:
877 case DT_VERNEEDNUM:
878 case DT_MIPS_RLD_VERSION:
879 case DT_MIPS_LOCAL_GOTNO:
880 case DT_MIPS_SYMTABNO:
881 case DT_MIPS_UNREFEXTNO:
882 OS << Value;
883 break;
884 case DT_PLTRELSZ:
885 case DT_RELASZ:
886 case DT_RELAENT:
887 case DT_STRSZ:
888 case DT_SYMENT:
889 case DT_RELSZ:
890 case DT_RELENT:
891 case DT_INIT_ARRAYSZ:
892 case DT_FINI_ARRAYSZ:
893 case DT_PREINIT_ARRAYSZ:
894 OS << Value << " (bytes)";
895 break;
896 case DT_NEEDED:
897 OS << "SharedLibrary (" << O->getDynamicString(Value) << ")";
898 break;
899 case DT_SONAME:
900 OS << "LibrarySoname (" << O->getDynamicString(Value) << ")";
901 break;
902 case DT_RPATH:
903 case DT_RUNPATH:
904 OS << O->getDynamicString(Value);
905 break;
906 case DT_MIPS_FLAGS:
907 printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS);
908 break;
909 case DT_FLAGS:
910 printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS);
911 break;
912 }
913 }
914
915 template<class ELFT>
printUnwindInfo()916 void ELFDumper<ELFT>::printUnwindInfo() {
917 W.startLine() << "UnwindInfo not implemented.\n";
918 }
919
920 namespace {
921 template <>
printUnwindInfo()922 void ELFDumper<ELFType<support::little, 2, false> >::printUnwindInfo() {
923 const unsigned Machine = Obj->getHeader()->e_machine;
924 if (Machine == EM_ARM) {
925 ARM::EHABI::PrinterContext<ELFType<support::little, 2, false> > Ctx(W, Obj);
926 return Ctx.PrintUnwindInformation();
927 }
928 W.startLine() << "UnwindInfo not implemented.\n";
929 }
930 }
931
932 template<class ELFT>
printDynamicTable()933 void ELFDumper<ELFT>::printDynamicTable() {
934 auto DynTable = Obj->dynamic_table(true);
935
936 ptrdiff_t Total = std::distance(DynTable.begin(), DynTable.end());
937 if (Total == 0)
938 return;
939
940 raw_ostream &OS = W.getOStream();
941 W.startLine() << "DynamicSection [ (" << Total << " entries)\n";
942
943 bool Is64 = ELFT::Is64Bits;
944
945 W.startLine()
946 << " Tag" << (Is64 ? " " : " ") << "Type"
947 << " " << "Name/Value\n";
948 for (const auto &Entry : DynTable) {
949 W.startLine()
950 << " "
951 << format(Is64 ? "0x%016" PRIX64 : "0x%08" PRIX64, Entry.getTag())
952 << " " << format("%-21s", getTypeString(Entry.getTag()));
953 printValue(Obj, Entry.getTag(), Entry.getVal(), Is64, OS);
954 OS << "\n";
955 }
956
957 W.startLine() << "]\n";
958 }
959
960 template<class ELFT>
printNeededLibraries()961 void ELFDumper<ELFT>::printNeededLibraries() {
962 ListScope D(W, "NeededLibraries");
963
964 typedef std::vector<StringRef> LibsTy;
965 LibsTy Libs;
966
967 for (const auto &Entry : Obj->dynamic_table())
968 if (Entry.d_tag == ELF::DT_NEEDED)
969 Libs.push_back(Obj->getDynamicString(Entry.d_un.d_val));
970
971 std::stable_sort(Libs.begin(), Libs.end());
972
973 for (LibsTy::const_iterator I = Libs.begin(), E = Libs.end(); I != E; ++I) {
974 outs() << " " << *I << "\n";
975 }
976 }
977
978 template<class ELFT>
printProgramHeaders()979 void ELFDumper<ELFT>::printProgramHeaders() {
980 ListScope L(W, "ProgramHeaders");
981
982 for (typename ELFO::Elf_Phdr_Iter PI = Obj->begin_program_headers(),
983 PE = Obj->end_program_headers();
984 PI != PE; ++PI) {
985 DictScope P(W, "ProgramHeader");
986 W.printHex ("Type",
987 getElfSegmentType(Obj->getHeader()->e_machine, PI->p_type),
988 PI->p_type);
989 W.printHex ("Offset", PI->p_offset);
990 W.printHex ("VirtualAddress", PI->p_vaddr);
991 W.printHex ("PhysicalAddress", PI->p_paddr);
992 W.printNumber("FileSize", PI->p_filesz);
993 W.printNumber("MemSize", PI->p_memsz);
994 W.printFlags ("Flags", PI->p_flags, makeArrayRef(ElfSegmentFlags));
995 W.printNumber("Alignment", PI->p_align);
996 }
997 }
998
999 template <class ELFT>
printAttributes()1000 void ELFDumper<ELFT>::printAttributes() {
1001 W.startLine() << "Attributes not implemented.\n";
1002 }
1003
1004 namespace {
1005 template <>
printAttributes()1006 void ELFDumper<ELFType<support::little, 2, false> >::printAttributes() {
1007 if (Obj->getHeader()->e_machine != EM_ARM) {
1008 W.startLine() << "Attributes not implemented.\n";
1009 return;
1010 }
1011
1012 DictScope BA(W, "BuildAttributes");
1013 for (ELFO::Elf_Shdr_Iter SI = Obj->begin_sections(), SE = Obj->end_sections();
1014 SI != SE; ++SI) {
1015 if (SI->sh_type != ELF::SHT_ARM_ATTRIBUTES)
1016 continue;
1017
1018 ErrorOr<ArrayRef<uint8_t> > Contents = Obj->getSectionContents(&(*SI));
1019 if (!Contents)
1020 continue;
1021
1022 if ((*Contents)[0] != ARMBuildAttrs::Format_Version) {
1023 errs() << "unrecognised FormatVersion: 0x" << utohexstr((*Contents)[0])
1024 << '\n';
1025 continue;
1026 }
1027
1028 W.printHex("FormatVersion", (*Contents)[0]);
1029 if (Contents->size() == 1)
1030 continue;
1031
1032 ARMAttributeParser(W).Parse(*Contents);
1033 }
1034 }
1035 }
1036
1037 namespace {
1038 template <class ELFT> class MipsGOTParser {
1039 public:
1040 typedef object::ELFFile<ELFT> ObjectFile;
1041 typedef typename ObjectFile::Elf_Shdr Elf_Shdr;
1042
MipsGOTParser(const ObjectFile * Obj,StreamWriter & W)1043 MipsGOTParser(const ObjectFile *Obj, StreamWriter &W) : Obj(Obj), W(W) {}
1044
1045 void parseGOT(const Elf_Shdr &GOTShdr);
1046
1047 private:
1048 typedef typename ObjectFile::Elf_Sym_Iter Elf_Sym_Iter;
1049 typedef typename ObjectFile::Elf_Addr GOTEntry;
1050 typedef typename ObjectFile::template ELFEntityIterator<const GOTEntry>
1051 GOTIter;
1052
1053 const ObjectFile *Obj;
1054 StreamWriter &W;
1055
1056 std::size_t getGOTTotal(ArrayRef<uint8_t> GOT) const;
1057 GOTIter makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum);
1058
1059 bool getGOTTags(uint64_t &LocalGotNum, uint64_t &GotSym);
1060 void printGotEntry(uint64_t GotAddr, GOTIter BeginIt, GOTIter It);
1061 void printGlobalGotEntry(uint64_t GotAddr, GOTIter BeginIt, GOTIter It,
1062 Elf_Sym_Iter Sym);
1063 };
1064 }
1065
1066 template <class ELFT>
parseGOT(const Elf_Shdr & GOTShdr)1067 void MipsGOTParser<ELFT>::parseGOT(const Elf_Shdr &GOTShdr) {
1068 // See "Global Offset Table" in Chapter 5 in the following document
1069 // for detailed GOT description.
1070 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf
1071
1072 ErrorOr<ArrayRef<uint8_t>> GOT = Obj->getSectionContents(&GOTShdr);
1073 if (!GOT) {
1074 W.startLine() << "The .got section is empty.\n";
1075 return;
1076 }
1077
1078 uint64_t DtLocalGotNum;
1079 uint64_t DtGotSym;
1080 if (!getGOTTags(DtLocalGotNum, DtGotSym))
1081 return;
1082
1083 if (DtLocalGotNum > getGOTTotal(*GOT)) {
1084 W.startLine() << "MIPS_LOCAL_GOTNO exceeds a number of GOT entries.\n";
1085 return;
1086 }
1087
1088 Elf_Sym_Iter DynSymBegin = Obj->begin_dynamic_symbols();
1089 Elf_Sym_Iter DynSymEnd = Obj->end_dynamic_symbols();
1090 std::size_t DynSymTotal = std::size_t(std::distance(DynSymBegin, DynSymEnd));
1091
1092 if (DtGotSym > DynSymTotal) {
1093 W.startLine() << "MIPS_GOTSYM exceeds a number of dynamic symbols.\n";
1094 return;
1095 }
1096
1097 std::size_t GlobalGotNum = DynSymTotal - DtGotSym;
1098
1099 if (DtLocalGotNum + GlobalGotNum > getGOTTotal(*GOT)) {
1100 W.startLine() << "Number of global GOT entries exceeds the size of GOT.\n";
1101 return;
1102 }
1103
1104 GOTIter GotBegin = makeGOTIter(*GOT, 0);
1105 GOTIter GotLocalEnd = makeGOTIter(*GOT, DtLocalGotNum);
1106 GOTIter It = GotBegin;
1107
1108 DictScope GS(W, "Primary GOT");
1109
1110 W.printHex("Canonical gp value", GOTShdr.sh_addr + 0x7ff0);
1111 {
1112 ListScope RS(W, "Reserved entries");
1113
1114 {
1115 DictScope D(W, "Entry");
1116 printGotEntry(GOTShdr.sh_addr, GotBegin, It++);
1117 W.printString("Purpose", StringRef("Lazy resolver"));
1118 }
1119
1120 if (It != GotLocalEnd && (*It >> (sizeof(GOTEntry) * 8 - 1)) != 0) {
1121 DictScope D(W, "Entry");
1122 printGotEntry(GOTShdr.sh_addr, GotBegin, It++);
1123 W.printString("Purpose", StringRef("Module pointer (GNU extension)"));
1124 }
1125 }
1126 {
1127 ListScope LS(W, "Local entries");
1128 for (; It != GotLocalEnd; ++It) {
1129 DictScope D(W, "Entry");
1130 printGotEntry(GOTShdr.sh_addr, GotBegin, It);
1131 }
1132 }
1133 {
1134 ListScope GS(W, "Global entries");
1135
1136 GOTIter GotGlobalEnd = makeGOTIter(*GOT, DtLocalGotNum + GlobalGotNum);
1137 Elf_Sym_Iter GotDynSym = DynSymBegin + DtGotSym;
1138 for (; It != GotGlobalEnd; ++It) {
1139 DictScope D(W, "Entry");
1140 printGlobalGotEntry(GOTShdr.sh_addr, GotBegin, It, GotDynSym++);
1141 }
1142 }
1143
1144 std::size_t SpecGotNum = getGOTTotal(*GOT) - DtLocalGotNum - GlobalGotNum;
1145 W.printNumber("Number of TLS and multi-GOT entries", uint64_t(SpecGotNum));
1146 }
1147
1148 template <class ELFT>
getGOTTotal(ArrayRef<uint8_t> GOT) const1149 std::size_t MipsGOTParser<ELFT>::getGOTTotal(ArrayRef<uint8_t> GOT) const {
1150 return GOT.size() / sizeof(GOTEntry);
1151 }
1152
1153 template <class ELFT>
1154 typename MipsGOTParser<ELFT>::GOTIter
makeGOTIter(ArrayRef<uint8_t> GOT,std::size_t EntryNum)1155 MipsGOTParser<ELFT>::makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum) {
1156 const char *Data = reinterpret_cast<const char *>(GOT.data());
1157 return GOTIter(sizeof(GOTEntry), Data + EntryNum * sizeof(GOTEntry));
1158 }
1159
1160 template <class ELFT>
getGOTTags(uint64_t & LocalGotNum,uint64_t & GotSym)1161 bool MipsGOTParser<ELFT>::getGOTTags(uint64_t &LocalGotNum, uint64_t &GotSym) {
1162 bool FoundLocalGotNum = false;
1163 bool FoundGotSym = false;
1164 for (const auto &Entry : Obj->dynamic_table()) {
1165 switch (Entry.getTag()) {
1166 case ELF::DT_MIPS_LOCAL_GOTNO:
1167 LocalGotNum = Entry.getVal();
1168 FoundLocalGotNum = true;
1169 break;
1170 case ELF::DT_MIPS_GOTSYM:
1171 GotSym = Entry.getVal();
1172 FoundGotSym = true;
1173 break;
1174 }
1175 }
1176
1177 if (!FoundLocalGotNum) {
1178 W.startLine() << "Cannot find MIPS_LOCAL_GOTNO dynamic table tag.\n";
1179 return false;
1180 }
1181
1182 if (!FoundGotSym) {
1183 W.startLine() << "Cannot find MIPS_GOTSYM dynamic table tag.\n";
1184 return false;
1185 }
1186
1187 return true;
1188 }
1189
1190 template <class ELFT>
printGotEntry(uint64_t GotAddr,GOTIter BeginIt,GOTIter It)1191 void MipsGOTParser<ELFT>::printGotEntry(uint64_t GotAddr, GOTIter BeginIt,
1192 GOTIter It) {
1193 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry);
1194 W.printHex("Address", GotAddr + Offset);
1195 W.printNumber("Access", Offset - 0x7ff0);
1196 W.printHex("Initial", *It);
1197 }
1198
1199 template <class ELFT>
printGlobalGotEntry(uint64_t GotAddr,GOTIter BeginIt,GOTIter It,Elf_Sym_Iter Sym)1200 void MipsGOTParser<ELFT>::printGlobalGotEntry(uint64_t GotAddr, GOTIter BeginIt,
1201 GOTIter It, Elf_Sym_Iter Sym) {
1202 printGotEntry(GotAddr, BeginIt, It);
1203
1204 W.printHex("Value", Sym->st_value);
1205 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes));
1206
1207 unsigned SectionIndex = 0;
1208 StringRef SectionName;
1209 getSectionNameIndex(*Obj, Sym, SectionName, SectionIndex);
1210 W.printHex("Section", SectionName, SectionIndex);
1211
1212 std::string FullSymbolName = getFullSymbolName(*Obj, Sym);
1213 W.printNumber("Name", FullSymbolName, Sym->st_name);
1214 }
1215
printMipsPLTGOT()1216 template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() {
1217 if (Obj->getHeader()->e_machine != EM_MIPS) {
1218 W.startLine() << "MIPS PLT GOT is available for MIPS targets only.\n";
1219 return;
1220 }
1221
1222 llvm::Optional<uint64_t> DtPltGot;
1223 for (const auto &Entry : Obj->dynamic_table()) {
1224 if (Entry.getTag() == ELF::DT_PLTGOT) {
1225 DtPltGot = Entry.getVal();
1226 break;
1227 }
1228 }
1229
1230 if (!DtPltGot) {
1231 W.startLine() << "Cannot find PLTGOT dynamic table tag.\n";
1232 return;
1233 }
1234
1235 const Elf_Shdr *GotShdr = findSectionByAddress(Obj, *DtPltGot);
1236 if (!GotShdr) {
1237 W.startLine() << "There is no .got section in the file.\n";
1238 return;
1239 }
1240
1241 MipsGOTParser<ELFT>(Obj, W).parseGOT(*GotShdr);
1242 }
1243