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 "StackMapPrinter.h"
21 #include "StreamWriter.h"
22 #include "llvm/ADT/Optional.h"
23 #include "llvm/ADT/SmallString.h"
24 #include "llvm/ADT/StringExtras.h"
25 #include "llvm/Object/ELFObjectFile.h"
26 #include "llvm/Support/ARMBuildAttributes.h"
27 #include "llvm/Support/Compiler.h"
28 #include "llvm/Support/Format.h"
29 #include "llvm/Support/MathExtras.h"
30 #include "llvm/Support/MipsABIFlags.h"
31 #include "llvm/Support/raw_ostream.h"
32
33 using namespace llvm;
34 using namespace llvm::object;
35 using namespace ELF;
36
37 #define LLVM_READOBJ_ENUM_CASE(ns, enum) \
38 case ns::enum: return #enum;
39
40 namespace {
41
42 template<typename ELFT>
43 class ELFDumper : public ObjDumper {
44 public:
ELFDumper(const ELFFile<ELFT> * Obj,StreamWriter & Writer)45 ELFDumper(const ELFFile<ELFT> *Obj, StreamWriter &Writer)
46 : ObjDumper(Writer), Obj(Obj) {}
47
48 void printFileHeaders() override;
49 void printSections() override;
50 void printRelocations() override;
51 void printDynamicRelocations() override;
52 void printSymbols() override;
53 void printDynamicSymbols() override;
54 void printUnwindInfo() override;
55
56 void printDynamicTable() override;
57 void printNeededLibraries() override;
58 void printProgramHeaders() override;
59 void printHashTable() override;
60
61 void printAttributes() override;
62 void printMipsPLTGOT() override;
63 void printMipsABIFlags() override;
64 void printMipsReginfo() override;
65
66 void printStackMap() const override;
67
68 private:
69 typedef ELFFile<ELFT> ELFO;
70 typedef typename ELFO::Elf_Shdr Elf_Shdr;
71 typedef typename ELFO::Elf_Sym Elf_Sym;
72
73 void printSymbol(const Elf_Sym *Symbol, bool IsDynamic);
74
75 void printRelocations(const Elf_Shdr *Sec);
76 void printRelocation(const Elf_Shdr *Sec, typename ELFO::Elf_Rela Rel);
77
78 const ELFO *Obj;
79 };
80
errorOrDefault(ErrorOr<T> Val,T Default=T ())81 template <class T> T errorOrDefault(ErrorOr<T> Val, T Default = T()) {
82 if (!Val) {
83 error(Val.getError());
84 return Default;
85 }
86
87 return *Val;
88 }
89 } // namespace
90
91 namespace llvm {
92
93 template <class ELFT>
createELFDumper(const ELFFile<ELFT> * Obj,StreamWriter & Writer,std::unique_ptr<ObjDumper> & Result)94 static std::error_code createELFDumper(const ELFFile<ELFT> *Obj,
95 StreamWriter &Writer,
96 std::unique_ptr<ObjDumper> &Result) {
97 Result.reset(new ELFDumper<ELFT>(Obj, Writer));
98 return readobj_error::success;
99 }
100
createELFDumper(const object::ObjectFile * Obj,StreamWriter & Writer,std::unique_ptr<ObjDumper> & Result)101 std::error_code createELFDumper(const object::ObjectFile *Obj,
102 StreamWriter &Writer,
103 std::unique_ptr<ObjDumper> &Result) {
104 // Little-endian 32-bit
105 if (const ELF32LEObjectFile *ELFObj = dyn_cast<ELF32LEObjectFile>(Obj))
106 return createELFDumper(ELFObj->getELFFile(), Writer, Result);
107
108 // Big-endian 32-bit
109 if (const ELF32BEObjectFile *ELFObj = dyn_cast<ELF32BEObjectFile>(Obj))
110 return createELFDumper(ELFObj->getELFFile(), Writer, Result);
111
112 // Little-endian 64-bit
113 if (const ELF64LEObjectFile *ELFObj = dyn_cast<ELF64LEObjectFile>(Obj))
114 return createELFDumper(ELFObj->getELFFile(), Writer, Result);
115
116 // Big-endian 64-bit
117 if (const ELF64BEObjectFile *ELFObj = dyn_cast<ELF64BEObjectFile>(Obj))
118 return createELFDumper(ELFObj->getELFFile(), Writer, Result);
119
120 return readobj_error::unsupported_obj_file_format;
121 }
122
123 } // namespace llvm
124
125 template <typename ELFO>
getFullSymbolName(const ELFO & Obj,const typename ELFO::Elf_Sym * Symbol,bool IsDynamic)126 static std::string getFullSymbolName(const ELFO &Obj,
127 const typename ELFO::Elf_Sym *Symbol,
128 bool IsDynamic) {
129 StringRef SymbolName = errorOrDefault(Obj.getSymbolName(Symbol, IsDynamic));
130 if (!IsDynamic)
131 return SymbolName;
132
133 std::string FullSymbolName(SymbolName);
134
135 bool IsDefault;
136 ErrorOr<StringRef> Version =
137 Obj.getSymbolVersion(nullptr, &*Symbol, IsDefault);
138 if (Version) {
139 FullSymbolName += (IsDefault ? "@@" : "@");
140 FullSymbolName += *Version;
141 } else
142 error(Version.getError());
143 return FullSymbolName;
144 }
145
146 template <typename ELFO>
147 static void
getSectionNameIndex(const ELFO & Obj,const typename ELFO::Elf_Sym * Symbol,StringRef & SectionName,unsigned & SectionIndex)148 getSectionNameIndex(const ELFO &Obj, const typename ELFO::Elf_Sym *Symbol,
149 StringRef &SectionName, unsigned &SectionIndex) {
150 SectionIndex = Symbol->st_shndx;
151 if (Symbol->isUndefined())
152 SectionName = "Undefined";
153 else if (Symbol->isProcessorSpecific())
154 SectionName = "Processor Specific";
155 else if (Symbol->isOSSpecific())
156 SectionName = "Operating System Specific";
157 else if (Symbol->isAbsolute())
158 SectionName = "Absolute";
159 else if (Symbol->isCommon())
160 SectionName = "Common";
161 else if (Symbol->isReserved() && SectionIndex != SHN_XINDEX)
162 SectionName = "Reserved";
163 else {
164 if (SectionIndex == SHN_XINDEX)
165 SectionIndex = Obj.getExtendedSymbolTableIndex(&*Symbol);
166 ErrorOr<const typename ELFO::Elf_Shdr *> Sec = Obj.getSection(SectionIndex);
167 if (!error(Sec.getError()))
168 SectionName = errorOrDefault(Obj.getSectionName(*Sec));
169 }
170 }
171
172 template <class ELFT>
173 static const typename ELFFile<ELFT>::Elf_Shdr *
findSectionByAddress(const ELFFile<ELFT> * Obj,uint64_t Addr)174 findSectionByAddress(const ELFFile<ELFT> *Obj, uint64_t Addr) {
175 for (const auto &Shdr : Obj->sections())
176 if (Shdr.sh_addr == Addr)
177 return &Shdr;
178 return nullptr;
179 }
180
181 template <class ELFT>
182 static const typename ELFFile<ELFT>::Elf_Shdr *
findSectionByName(const ELFFile<ELFT> & Obj,StringRef Name)183 findSectionByName(const ELFFile<ELFT> &Obj, StringRef Name) {
184 for (const auto &Shdr : Obj.sections()) {
185 if (Name == errorOrDefault(Obj.getSectionName(&Shdr)))
186 return &Shdr;
187 }
188 return nullptr;
189 }
190
191 static const EnumEntry<unsigned> ElfClass[] = {
192 { "None", ELF::ELFCLASSNONE },
193 { "32-bit", ELF::ELFCLASS32 },
194 { "64-bit", ELF::ELFCLASS64 },
195 };
196
197 static const EnumEntry<unsigned> ElfDataEncoding[] = {
198 { "None", ELF::ELFDATANONE },
199 { "LittleEndian", ELF::ELFDATA2LSB },
200 { "BigEndian", ELF::ELFDATA2MSB },
201 };
202
203 static const EnumEntry<unsigned> ElfObjectFileType[] = {
204 { "None", ELF::ET_NONE },
205 { "Relocatable", ELF::ET_REL },
206 { "Executable", ELF::ET_EXEC },
207 { "SharedObject", ELF::ET_DYN },
208 { "Core", ELF::ET_CORE },
209 };
210
211 static const EnumEntry<unsigned> ElfOSABI[] = {
212 { "SystemV", ELF::ELFOSABI_NONE },
213 { "HPUX", ELF::ELFOSABI_HPUX },
214 { "NetBSD", ELF::ELFOSABI_NETBSD },
215 { "GNU/Linux", ELF::ELFOSABI_LINUX },
216 { "GNU/Hurd", ELF::ELFOSABI_HURD },
217 { "Solaris", ELF::ELFOSABI_SOLARIS },
218 { "AIX", ELF::ELFOSABI_AIX },
219 { "IRIX", ELF::ELFOSABI_IRIX },
220 { "FreeBSD", ELF::ELFOSABI_FREEBSD },
221 { "TRU64", ELF::ELFOSABI_TRU64 },
222 { "Modesto", ELF::ELFOSABI_MODESTO },
223 { "OpenBSD", ELF::ELFOSABI_OPENBSD },
224 { "OpenVMS", ELF::ELFOSABI_OPENVMS },
225 { "NSK", ELF::ELFOSABI_NSK },
226 { "AROS", ELF::ELFOSABI_AROS },
227 { "FenixOS", ELF::ELFOSABI_FENIXOS },
228 { "CloudABI", ELF::ELFOSABI_CLOUDABI },
229 { "C6000_ELFABI", ELF::ELFOSABI_C6000_ELFABI },
230 { "C6000_LINUX" , ELF::ELFOSABI_C6000_LINUX },
231 { "ARM", ELF::ELFOSABI_ARM },
232 { "Standalone" , ELF::ELFOSABI_STANDALONE }
233 };
234
235 static const EnumEntry<unsigned> ElfMachineType[] = {
236 LLVM_READOBJ_ENUM_ENT(ELF, EM_NONE ),
237 LLVM_READOBJ_ENUM_ENT(ELF, EM_M32 ),
238 LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARC ),
239 LLVM_READOBJ_ENUM_ENT(ELF, EM_386 ),
240 LLVM_READOBJ_ENUM_ENT(ELF, EM_68K ),
241 LLVM_READOBJ_ENUM_ENT(ELF, EM_88K ),
242 LLVM_READOBJ_ENUM_ENT(ELF, EM_IAMCU ),
243 LLVM_READOBJ_ENUM_ENT(ELF, EM_860 ),
244 LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS ),
245 LLVM_READOBJ_ENUM_ENT(ELF, EM_S370 ),
246 LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS_RS3_LE ),
247 LLVM_READOBJ_ENUM_ENT(ELF, EM_PARISC ),
248 LLVM_READOBJ_ENUM_ENT(ELF, EM_VPP500 ),
249 LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARC32PLUS ),
250 LLVM_READOBJ_ENUM_ENT(ELF, EM_960 ),
251 LLVM_READOBJ_ENUM_ENT(ELF, EM_PPC ),
252 LLVM_READOBJ_ENUM_ENT(ELF, EM_PPC64 ),
253 LLVM_READOBJ_ENUM_ENT(ELF, EM_S390 ),
254 LLVM_READOBJ_ENUM_ENT(ELF, EM_SPU ),
255 LLVM_READOBJ_ENUM_ENT(ELF, EM_V800 ),
256 LLVM_READOBJ_ENUM_ENT(ELF, EM_FR20 ),
257 LLVM_READOBJ_ENUM_ENT(ELF, EM_RH32 ),
258 LLVM_READOBJ_ENUM_ENT(ELF, EM_RCE ),
259 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARM ),
260 LLVM_READOBJ_ENUM_ENT(ELF, EM_ALPHA ),
261 LLVM_READOBJ_ENUM_ENT(ELF, EM_SH ),
262 LLVM_READOBJ_ENUM_ENT(ELF, EM_SPARCV9 ),
263 LLVM_READOBJ_ENUM_ENT(ELF, EM_TRICORE ),
264 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC ),
265 LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_300 ),
266 LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_300H ),
267 LLVM_READOBJ_ENUM_ENT(ELF, EM_H8S ),
268 LLVM_READOBJ_ENUM_ENT(ELF, EM_H8_500 ),
269 LLVM_READOBJ_ENUM_ENT(ELF, EM_IA_64 ),
270 LLVM_READOBJ_ENUM_ENT(ELF, EM_MIPS_X ),
271 LLVM_READOBJ_ENUM_ENT(ELF, EM_COLDFIRE ),
272 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC12 ),
273 LLVM_READOBJ_ENUM_ENT(ELF, EM_MMA ),
274 LLVM_READOBJ_ENUM_ENT(ELF, EM_PCP ),
275 LLVM_READOBJ_ENUM_ENT(ELF, EM_NCPU ),
276 LLVM_READOBJ_ENUM_ENT(ELF, EM_NDR1 ),
277 LLVM_READOBJ_ENUM_ENT(ELF, EM_STARCORE ),
278 LLVM_READOBJ_ENUM_ENT(ELF, EM_ME16 ),
279 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST100 ),
280 LLVM_READOBJ_ENUM_ENT(ELF, EM_TINYJ ),
281 LLVM_READOBJ_ENUM_ENT(ELF, EM_X86_64 ),
282 LLVM_READOBJ_ENUM_ENT(ELF, EM_PDSP ),
283 LLVM_READOBJ_ENUM_ENT(ELF, EM_PDP10 ),
284 LLVM_READOBJ_ENUM_ENT(ELF, EM_PDP11 ),
285 LLVM_READOBJ_ENUM_ENT(ELF, EM_FX66 ),
286 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST9PLUS ),
287 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST7 ),
288 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC16 ),
289 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC11 ),
290 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC08 ),
291 LLVM_READOBJ_ENUM_ENT(ELF, EM_68HC05 ),
292 LLVM_READOBJ_ENUM_ENT(ELF, EM_SVX ),
293 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST19 ),
294 LLVM_READOBJ_ENUM_ENT(ELF, EM_VAX ),
295 LLVM_READOBJ_ENUM_ENT(ELF, EM_CRIS ),
296 LLVM_READOBJ_ENUM_ENT(ELF, EM_JAVELIN ),
297 LLVM_READOBJ_ENUM_ENT(ELF, EM_FIREPATH ),
298 LLVM_READOBJ_ENUM_ENT(ELF, EM_ZSP ),
299 LLVM_READOBJ_ENUM_ENT(ELF, EM_MMIX ),
300 LLVM_READOBJ_ENUM_ENT(ELF, EM_HUANY ),
301 LLVM_READOBJ_ENUM_ENT(ELF, EM_PRISM ),
302 LLVM_READOBJ_ENUM_ENT(ELF, EM_AVR ),
303 LLVM_READOBJ_ENUM_ENT(ELF, EM_FR30 ),
304 LLVM_READOBJ_ENUM_ENT(ELF, EM_D10V ),
305 LLVM_READOBJ_ENUM_ENT(ELF, EM_D30V ),
306 LLVM_READOBJ_ENUM_ENT(ELF, EM_V850 ),
307 LLVM_READOBJ_ENUM_ENT(ELF, EM_M32R ),
308 LLVM_READOBJ_ENUM_ENT(ELF, EM_MN10300 ),
309 LLVM_READOBJ_ENUM_ENT(ELF, EM_MN10200 ),
310 LLVM_READOBJ_ENUM_ENT(ELF, EM_PJ ),
311 LLVM_READOBJ_ENUM_ENT(ELF, EM_OPENRISC ),
312 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC_COMPACT ),
313 LLVM_READOBJ_ENUM_ENT(ELF, EM_XTENSA ),
314 LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE ),
315 LLVM_READOBJ_ENUM_ENT(ELF, EM_TMM_GPP ),
316 LLVM_READOBJ_ENUM_ENT(ELF, EM_NS32K ),
317 LLVM_READOBJ_ENUM_ENT(ELF, EM_TPC ),
318 LLVM_READOBJ_ENUM_ENT(ELF, EM_SNP1K ),
319 LLVM_READOBJ_ENUM_ENT(ELF, EM_ST200 ),
320 LLVM_READOBJ_ENUM_ENT(ELF, EM_IP2K ),
321 LLVM_READOBJ_ENUM_ENT(ELF, EM_MAX ),
322 LLVM_READOBJ_ENUM_ENT(ELF, EM_CR ),
323 LLVM_READOBJ_ENUM_ENT(ELF, EM_F2MC16 ),
324 LLVM_READOBJ_ENUM_ENT(ELF, EM_MSP430 ),
325 LLVM_READOBJ_ENUM_ENT(ELF, EM_BLACKFIN ),
326 LLVM_READOBJ_ENUM_ENT(ELF, EM_SE_C33 ),
327 LLVM_READOBJ_ENUM_ENT(ELF, EM_SEP ),
328 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARCA ),
329 LLVM_READOBJ_ENUM_ENT(ELF, EM_UNICORE ),
330 LLVM_READOBJ_ENUM_ENT(ELF, EM_EXCESS ),
331 LLVM_READOBJ_ENUM_ENT(ELF, EM_DXP ),
332 LLVM_READOBJ_ENUM_ENT(ELF, EM_ALTERA_NIOS2 ),
333 LLVM_READOBJ_ENUM_ENT(ELF, EM_CRX ),
334 LLVM_READOBJ_ENUM_ENT(ELF, EM_XGATE ),
335 LLVM_READOBJ_ENUM_ENT(ELF, EM_C166 ),
336 LLVM_READOBJ_ENUM_ENT(ELF, EM_M16C ),
337 LLVM_READOBJ_ENUM_ENT(ELF, EM_DSPIC30F ),
338 LLVM_READOBJ_ENUM_ENT(ELF, EM_CE ),
339 LLVM_READOBJ_ENUM_ENT(ELF, EM_M32C ),
340 LLVM_READOBJ_ENUM_ENT(ELF, EM_TSK3000 ),
341 LLVM_READOBJ_ENUM_ENT(ELF, EM_RS08 ),
342 LLVM_READOBJ_ENUM_ENT(ELF, EM_SHARC ),
343 LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG2 ),
344 LLVM_READOBJ_ENUM_ENT(ELF, EM_SCORE7 ),
345 LLVM_READOBJ_ENUM_ENT(ELF, EM_DSP24 ),
346 LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE3 ),
347 LLVM_READOBJ_ENUM_ENT(ELF, EM_LATTICEMICO32),
348 LLVM_READOBJ_ENUM_ENT(ELF, EM_SE_C17 ),
349 LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C6000 ),
350 LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C2000 ),
351 LLVM_READOBJ_ENUM_ENT(ELF, EM_TI_C5500 ),
352 LLVM_READOBJ_ENUM_ENT(ELF, EM_MMDSP_PLUS ),
353 LLVM_READOBJ_ENUM_ENT(ELF, EM_CYPRESS_M8C ),
354 LLVM_READOBJ_ENUM_ENT(ELF, EM_R32C ),
355 LLVM_READOBJ_ENUM_ENT(ELF, EM_TRIMEDIA ),
356 LLVM_READOBJ_ENUM_ENT(ELF, EM_HEXAGON ),
357 LLVM_READOBJ_ENUM_ENT(ELF, EM_8051 ),
358 LLVM_READOBJ_ENUM_ENT(ELF, EM_STXP7X ),
359 LLVM_READOBJ_ENUM_ENT(ELF, EM_NDS32 ),
360 LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG1 ),
361 LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG1X ),
362 LLVM_READOBJ_ENUM_ENT(ELF, EM_MAXQ30 ),
363 LLVM_READOBJ_ENUM_ENT(ELF, EM_XIMO16 ),
364 LLVM_READOBJ_ENUM_ENT(ELF, EM_MANIK ),
365 LLVM_READOBJ_ENUM_ENT(ELF, EM_CRAYNV2 ),
366 LLVM_READOBJ_ENUM_ENT(ELF, EM_RX ),
367 LLVM_READOBJ_ENUM_ENT(ELF, EM_METAG ),
368 LLVM_READOBJ_ENUM_ENT(ELF, EM_MCST_ELBRUS ),
369 LLVM_READOBJ_ENUM_ENT(ELF, EM_ECOG16 ),
370 LLVM_READOBJ_ENUM_ENT(ELF, EM_CR16 ),
371 LLVM_READOBJ_ENUM_ENT(ELF, EM_ETPU ),
372 LLVM_READOBJ_ENUM_ENT(ELF, EM_SLE9X ),
373 LLVM_READOBJ_ENUM_ENT(ELF, EM_L10M ),
374 LLVM_READOBJ_ENUM_ENT(ELF, EM_K10M ),
375 LLVM_READOBJ_ENUM_ENT(ELF, EM_AARCH64 ),
376 LLVM_READOBJ_ENUM_ENT(ELF, EM_AVR32 ),
377 LLVM_READOBJ_ENUM_ENT(ELF, EM_STM8 ),
378 LLVM_READOBJ_ENUM_ENT(ELF, EM_TILE64 ),
379 LLVM_READOBJ_ENUM_ENT(ELF, EM_TILEPRO ),
380 LLVM_READOBJ_ENUM_ENT(ELF, EM_CUDA ),
381 LLVM_READOBJ_ENUM_ENT(ELF, EM_TILEGX ),
382 LLVM_READOBJ_ENUM_ENT(ELF, EM_CLOUDSHIELD ),
383 LLVM_READOBJ_ENUM_ENT(ELF, EM_COREA_1ST ),
384 LLVM_READOBJ_ENUM_ENT(ELF, EM_COREA_2ND ),
385 LLVM_READOBJ_ENUM_ENT(ELF, EM_ARC_COMPACT2 ),
386 LLVM_READOBJ_ENUM_ENT(ELF, EM_OPEN8 ),
387 LLVM_READOBJ_ENUM_ENT(ELF, EM_RL78 ),
388 LLVM_READOBJ_ENUM_ENT(ELF, EM_VIDEOCORE5 ),
389 LLVM_READOBJ_ENUM_ENT(ELF, EM_78KOR ),
390 LLVM_READOBJ_ENUM_ENT(ELF, EM_56800EX ),
391 LLVM_READOBJ_ENUM_ENT(ELF, EM_AMDGPU )
392 };
393
394 static const EnumEntry<unsigned> ElfSymbolBindings[] = {
395 { "Local", ELF::STB_LOCAL },
396 { "Global", ELF::STB_GLOBAL },
397 { "Weak", ELF::STB_WEAK },
398 { "Unique", ELF::STB_GNU_UNIQUE }
399 };
400
401 static const EnumEntry<unsigned> ElfSymbolTypes[] = {
402 { "None", ELF::STT_NOTYPE },
403 { "Object", ELF::STT_OBJECT },
404 { "Function", ELF::STT_FUNC },
405 { "Section", ELF::STT_SECTION },
406 { "File", ELF::STT_FILE },
407 { "Common", ELF::STT_COMMON },
408 { "TLS", ELF::STT_TLS },
409 { "GNU_IFunc", ELF::STT_GNU_IFUNC }
410 };
411
getElfSectionType(unsigned Arch,unsigned Type)412 static const char *getElfSectionType(unsigned Arch, unsigned Type) {
413 switch (Arch) {
414 case ELF::EM_ARM:
415 switch (Type) {
416 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_EXIDX);
417 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_PREEMPTMAP);
418 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_ATTRIBUTES);
419 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_DEBUGOVERLAY);
420 LLVM_READOBJ_ENUM_CASE(ELF, SHT_ARM_OVERLAYSECTION);
421 }
422 case ELF::EM_HEXAGON:
423 switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_HEX_ORDERED); }
424 case ELF::EM_X86_64:
425 switch (Type) { LLVM_READOBJ_ENUM_CASE(ELF, SHT_X86_64_UNWIND); }
426 case ELF::EM_MIPS:
427 case ELF::EM_MIPS_RS3_LE:
428 switch (Type) {
429 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_REGINFO);
430 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_OPTIONS);
431 LLVM_READOBJ_ENUM_CASE(ELF, SHT_MIPS_ABIFLAGS);
432 }
433 }
434
435 switch (Type) {
436 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NULL );
437 LLVM_READOBJ_ENUM_CASE(ELF, SHT_PROGBITS );
438 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB );
439 LLVM_READOBJ_ENUM_CASE(ELF, SHT_STRTAB );
440 LLVM_READOBJ_ENUM_CASE(ELF, SHT_RELA );
441 LLVM_READOBJ_ENUM_CASE(ELF, SHT_HASH );
442 LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNAMIC );
443 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOTE );
444 LLVM_READOBJ_ENUM_CASE(ELF, SHT_NOBITS );
445 LLVM_READOBJ_ENUM_CASE(ELF, SHT_REL );
446 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SHLIB );
447 LLVM_READOBJ_ENUM_CASE(ELF, SHT_DYNSYM );
448 LLVM_READOBJ_ENUM_CASE(ELF, SHT_INIT_ARRAY );
449 LLVM_READOBJ_ENUM_CASE(ELF, SHT_FINI_ARRAY );
450 LLVM_READOBJ_ENUM_CASE(ELF, SHT_PREINIT_ARRAY );
451 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GROUP );
452 LLVM_READOBJ_ENUM_CASE(ELF, SHT_SYMTAB_SHNDX );
453 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_ATTRIBUTES );
454 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_HASH );
455 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verdef );
456 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_verneed );
457 LLVM_READOBJ_ENUM_CASE(ELF, SHT_GNU_versym );
458 default: return "";
459 }
460 }
461
462 static const EnumEntry<unsigned> ElfSectionFlags[] = {
463 LLVM_READOBJ_ENUM_ENT(ELF, SHF_WRITE ),
464 LLVM_READOBJ_ENUM_ENT(ELF, SHF_ALLOC ),
465 LLVM_READOBJ_ENUM_ENT(ELF, SHF_EXCLUDE ),
466 LLVM_READOBJ_ENUM_ENT(ELF, SHF_EXECINSTR ),
467 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MERGE ),
468 LLVM_READOBJ_ENUM_ENT(ELF, SHF_STRINGS ),
469 LLVM_READOBJ_ENUM_ENT(ELF, SHF_INFO_LINK ),
470 LLVM_READOBJ_ENUM_ENT(ELF, SHF_LINK_ORDER ),
471 LLVM_READOBJ_ENUM_ENT(ELF, SHF_OS_NONCONFORMING),
472 LLVM_READOBJ_ENUM_ENT(ELF, SHF_GROUP ),
473 LLVM_READOBJ_ENUM_ENT(ELF, SHF_TLS ),
474 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_CP_SECTION),
475 LLVM_READOBJ_ENUM_ENT(ELF, XCORE_SHF_DP_SECTION),
476 LLVM_READOBJ_ENUM_ENT(ELF, SHF_MIPS_NOSTRIP )
477 };
478
getElfSegmentType(unsigned Arch,unsigned Type)479 static const char *getElfSegmentType(unsigned Arch, unsigned Type) {
480 // Check potentially overlapped processor-specific
481 // program header type.
482 switch (Arch) {
483 case ELF::EM_ARM:
484 switch (Type) {
485 LLVM_READOBJ_ENUM_CASE(ELF, PT_ARM_EXIDX);
486 }
487 case ELF::EM_MIPS:
488 case ELF::EM_MIPS_RS3_LE:
489 switch (Type) {
490 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_REGINFO);
491 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_RTPROC);
492 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_OPTIONS);
493 LLVM_READOBJ_ENUM_CASE(ELF, PT_MIPS_ABIFLAGS);
494 }
495 }
496
497 switch (Type) {
498 LLVM_READOBJ_ENUM_CASE(ELF, PT_NULL );
499 LLVM_READOBJ_ENUM_CASE(ELF, PT_LOAD );
500 LLVM_READOBJ_ENUM_CASE(ELF, PT_DYNAMIC);
501 LLVM_READOBJ_ENUM_CASE(ELF, PT_INTERP );
502 LLVM_READOBJ_ENUM_CASE(ELF, PT_NOTE );
503 LLVM_READOBJ_ENUM_CASE(ELF, PT_SHLIB );
504 LLVM_READOBJ_ENUM_CASE(ELF, PT_PHDR );
505 LLVM_READOBJ_ENUM_CASE(ELF, PT_TLS );
506
507 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_EH_FRAME);
508 LLVM_READOBJ_ENUM_CASE(ELF, PT_SUNW_UNWIND);
509
510 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_STACK);
511 LLVM_READOBJ_ENUM_CASE(ELF, PT_GNU_RELRO);
512 default: return "";
513 }
514 }
515
516 static const EnumEntry<unsigned> ElfSegmentFlags[] = {
517 LLVM_READOBJ_ENUM_ENT(ELF, PF_X),
518 LLVM_READOBJ_ENUM_ENT(ELF, PF_W),
519 LLVM_READOBJ_ENUM_ENT(ELF, PF_R)
520 };
521
522 static const EnumEntry<unsigned> ElfHeaderMipsFlags[] = {
523 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NOREORDER),
524 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_PIC),
525 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_CPIC),
526 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI2),
527 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_32BITMODE),
528 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_FP64),
529 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_NAN2008),
530 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O32),
531 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_O64),
532 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI32),
533 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ABI_EABI64),
534 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_3900),
535 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4010),
536 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4100),
537 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4650),
538 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4120),
539 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_4111),
540 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_SB1),
541 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON),
542 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_XLR),
543 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON2),
544 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_OCTEON3),
545 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5400),
546 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5900),
547 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_5500),
548 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_9000),
549 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2E),
550 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS2F),
551 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MACH_LS3A),
552 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_MICROMIPS),
553 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_M16),
554 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_ASE_MDMX),
555 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_1),
556 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_2),
557 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_3),
558 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_4),
559 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_5),
560 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32),
561 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64),
562 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R2),
563 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R2),
564 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_32R6),
565 LLVM_READOBJ_ENUM_ENT(ELF, EF_MIPS_ARCH_64R6)
566 };
567
568 template<class ELFT>
printFileHeaders()569 void ELFDumper<ELFT>::printFileHeaders() {
570 const typename ELFO::Elf_Ehdr *Header = Obj->getHeader();
571
572 {
573 DictScope D(W, "ElfHeader");
574 {
575 DictScope D(W, "Ident");
576 W.printBinary("Magic", makeArrayRef(Header->e_ident).slice(ELF::EI_MAG0,
577 4));
578 W.printEnum ("Class", Header->e_ident[ELF::EI_CLASS],
579 makeArrayRef(ElfClass));
580 W.printEnum ("DataEncoding", Header->e_ident[ELF::EI_DATA],
581 makeArrayRef(ElfDataEncoding));
582 W.printNumber("FileVersion", Header->e_ident[ELF::EI_VERSION]);
583
584 // Handle architecture specific OS/ABI values.
585 if (Header->e_machine == ELF::EM_AMDGPU &&
586 Header->e_ident[ELF::EI_OSABI] == ELF::ELFOSABI_AMDGPU_HSA)
587 W.printHex("OS/ABI", "AMDGPU_HSA", ELF::ELFOSABI_AMDGPU_HSA);
588 else
589 W.printEnum ("OS/ABI", Header->e_ident[ELF::EI_OSABI],
590 makeArrayRef(ElfOSABI));
591 W.printNumber("ABIVersion", Header->e_ident[ELF::EI_ABIVERSION]);
592 W.printBinary("Unused", makeArrayRef(Header->e_ident).slice(ELF::EI_PAD));
593 }
594
595 W.printEnum ("Type", Header->e_type, makeArrayRef(ElfObjectFileType));
596 W.printEnum ("Machine", Header->e_machine, makeArrayRef(ElfMachineType));
597 W.printNumber("Version", Header->e_version);
598 W.printHex ("Entry", Header->e_entry);
599 W.printHex ("ProgramHeaderOffset", Header->e_phoff);
600 W.printHex ("SectionHeaderOffset", Header->e_shoff);
601 if (Header->e_machine == EM_MIPS)
602 W.printFlags("Flags", Header->e_flags, makeArrayRef(ElfHeaderMipsFlags),
603 unsigned(ELF::EF_MIPS_ARCH), unsigned(ELF::EF_MIPS_ABI),
604 unsigned(ELF::EF_MIPS_MACH));
605 else
606 W.printFlags("Flags", Header->e_flags);
607 W.printNumber("HeaderSize", Header->e_ehsize);
608 W.printNumber("ProgramHeaderEntrySize", Header->e_phentsize);
609 W.printNumber("ProgramHeaderCount", Header->e_phnum);
610 W.printNumber("SectionHeaderEntrySize", Header->e_shentsize);
611 W.printNumber("SectionHeaderCount", Header->e_shnum);
612 W.printNumber("StringTableSectionIndex", Header->e_shstrndx);
613 }
614 }
615
616 template<class ELFT>
printSections()617 void ELFDumper<ELFT>::printSections() {
618 ListScope SectionsD(W, "Sections");
619
620 int SectionIndex = -1;
621 for (const typename ELFO::Elf_Shdr &Sec : Obj->sections()) {
622 ++SectionIndex;
623
624 StringRef Name = errorOrDefault(Obj->getSectionName(&Sec));
625
626 DictScope SectionD(W, "Section");
627 W.printNumber("Index", SectionIndex);
628 W.printNumber("Name", Name, Sec.sh_name);
629 W.printHex("Type",
630 getElfSectionType(Obj->getHeader()->e_machine, Sec.sh_type),
631 Sec.sh_type);
632 W.printFlags("Flags", Sec.sh_flags, makeArrayRef(ElfSectionFlags));
633 W.printHex("Address", Sec.sh_addr);
634 W.printHex("Offset", Sec.sh_offset);
635 W.printNumber("Size", Sec.sh_size);
636 W.printNumber("Link", Sec.sh_link);
637 W.printNumber("Info", Sec.sh_info);
638 W.printNumber("AddressAlignment", Sec.sh_addralign);
639 W.printNumber("EntrySize", Sec.sh_entsize);
640
641 if (opts::SectionRelocations) {
642 ListScope D(W, "Relocations");
643 printRelocations(&Sec);
644 }
645
646 if (opts::SectionSymbols) {
647 ListScope D(W, "Symbols");
648 for (const typename ELFO::Elf_Sym &Sym : Obj->symbols()) {
649 ErrorOr<const Elf_Shdr *> SymSec = Obj->getSection(&Sym);
650 if (!SymSec)
651 continue;
652 if (*SymSec == &Sec)
653 printSymbol(&Sym, false);
654 }
655 }
656
657 if (opts::SectionData && Sec.sh_type != ELF::SHT_NOBITS) {
658 ArrayRef<uint8_t> Data = errorOrDefault(Obj->getSectionContents(&Sec));
659 W.printBinaryBlock("SectionData",
660 StringRef((const char *)Data.data(), Data.size()));
661 }
662 }
663 }
664
665 template<class ELFT>
printRelocations()666 void ELFDumper<ELFT>::printRelocations() {
667 ListScope D(W, "Relocations");
668
669 int SectionNumber = -1;
670 for (const typename ELFO::Elf_Shdr &Sec : Obj->sections()) {
671 ++SectionNumber;
672
673 if (Sec.sh_type != ELF::SHT_REL && Sec.sh_type != ELF::SHT_RELA)
674 continue;
675
676 StringRef Name = errorOrDefault(Obj->getSectionName(&Sec));
677
678 W.startLine() << "Section (" << SectionNumber << ") " << Name << " {\n";
679 W.indent();
680
681 printRelocations(&Sec);
682
683 W.unindent();
684 W.startLine() << "}\n";
685 }
686 }
687
688 template<class ELFT>
printDynamicRelocations()689 void ELFDumper<ELFT>::printDynamicRelocations() {
690 W.startLine() << "Dynamic Relocations {\n";
691 W.indent();
692 for (typename ELFO::Elf_Rela_Iter RelI = Obj->dyn_rela_begin(),
693 RelE = Obj->dyn_rela_end();
694 RelI != RelE; ++RelI) {
695 SmallString<32> RelocName;
696 Obj->getRelocationTypeName(RelI->getType(Obj->isMips64EL()), RelocName);
697 StringRef SymbolName;
698 uint32_t SymIndex = RelI->getSymbol(Obj->isMips64EL());
699 const typename ELFO::Elf_Sym *Sym = Obj->dynamic_symbol_begin() + SymIndex;
700 SymbolName = errorOrDefault(Obj->getSymbolName(Sym, true));
701 if (opts::ExpandRelocs) {
702 DictScope Group(W, "Relocation");
703 W.printHex("Offset", RelI->r_offset);
704 W.printNumber("Type", RelocName, (int)RelI->getType(Obj->isMips64EL()));
705 W.printString("Symbol", SymbolName.size() > 0 ? SymbolName : "-");
706 W.printHex("Addend", RelI->r_addend);
707 }
708 else {
709 raw_ostream& OS = W.startLine();
710 OS << W.hex(RelI->r_offset)
711 << " " << RelocName
712 << " " << (SymbolName.size() > 0 ? SymbolName : "-")
713 << " " << W.hex(RelI->r_addend)
714 << "\n";
715 }
716 }
717 W.unindent();
718 W.startLine() << "}\n";
719 }
720
721 template <class ELFT>
printRelocations(const Elf_Shdr * Sec)722 void ELFDumper<ELFT>::printRelocations(const Elf_Shdr *Sec) {
723 switch (Sec->sh_type) {
724 case ELF::SHT_REL:
725 for (typename ELFO::Elf_Rel_Iter RI = Obj->rel_begin(Sec),
726 RE = Obj->rel_end(Sec);
727 RI != RE; ++RI) {
728 typename ELFO::Elf_Rela Rela;
729 Rela.r_offset = RI->r_offset;
730 Rela.r_info = RI->r_info;
731 Rela.r_addend = 0;
732 printRelocation(Sec, Rela);
733 }
734 break;
735 case ELF::SHT_RELA:
736 for (typename ELFO::Elf_Rela_Iter RI = Obj->rela_begin(Sec),
737 RE = Obj->rela_end(Sec);
738 RI != RE; ++RI) {
739 printRelocation(Sec, *RI);
740 }
741 break;
742 }
743 }
744
745 template <class ELFT>
printRelocation(const Elf_Shdr * Sec,typename ELFO::Elf_Rela Rel)746 void ELFDumper<ELFT>::printRelocation(const Elf_Shdr *Sec,
747 typename ELFO::Elf_Rela Rel) {
748 SmallString<32> RelocName;
749 Obj->getRelocationTypeName(Rel.getType(Obj->isMips64EL()), RelocName);
750 StringRef TargetName;
751 std::pair<const Elf_Shdr *, const Elf_Sym *> Sym =
752 Obj->getRelocationSymbol(Sec, &Rel);
753 if (Sym.second && Sym.second->getType() == ELF::STT_SECTION) {
754 ErrorOr<const Elf_Shdr *> Sec = Obj->getSection(Sym.second);
755 if (!error(Sec.getError())) {
756 ErrorOr<StringRef> SecName = Obj->getSectionName(*Sec);
757 if (SecName)
758 TargetName = SecName.get();
759 }
760 } else if (Sym.first) {
761 const Elf_Shdr *SymTable = Sym.first;
762 ErrorOr<const Elf_Shdr *> StrTableSec = Obj->getSection(SymTable->sh_link);
763 if (!error(StrTableSec.getError())) {
764 ErrorOr<StringRef> StrTableOrErr = Obj->getStringTable(*StrTableSec);
765 if (!error(StrTableOrErr.getError()))
766 TargetName = errorOrDefault(Sym.second->getName(*StrTableOrErr));
767 }
768 }
769
770 if (opts::ExpandRelocs) {
771 DictScope Group(W, "Relocation");
772 W.printHex("Offset", Rel.r_offset);
773 W.printNumber("Type", RelocName, (int)Rel.getType(Obj->isMips64EL()));
774 W.printNumber("Symbol", TargetName.size() > 0 ? TargetName : "-",
775 Rel.getSymbol(Obj->isMips64EL()));
776 W.printHex("Addend", Rel.r_addend);
777 } else {
778 raw_ostream& OS = W.startLine();
779 OS << W.hex(Rel.r_offset) << " " << RelocName << " "
780 << (TargetName.size() > 0 ? TargetName : "-") << " "
781 << W.hex(Rel.r_addend) << "\n";
782 }
783 }
784
785 template<class ELFT>
printSymbols()786 void ELFDumper<ELFT>::printSymbols() {
787 ListScope Group(W, "Symbols");
788 for (const typename ELFO::Elf_Sym &Sym : Obj->symbols())
789 printSymbol(&Sym, false);
790 }
791
792 template<class ELFT>
printDynamicSymbols()793 void ELFDumper<ELFT>::printDynamicSymbols() {
794 ListScope Group(W, "DynamicSymbols");
795
796 for (const typename ELFO::Elf_Sym &Sym : Obj->dynamic_symbols())
797 printSymbol(&Sym, true);
798 }
799
800 template <class ELFT>
printSymbol(const typename ELFO::Elf_Sym * Symbol,bool IsDynamic)801 void ELFDumper<ELFT>::printSymbol(const typename ELFO::Elf_Sym *Symbol,
802 bool IsDynamic) {
803 unsigned SectionIndex = 0;
804 StringRef SectionName;
805 getSectionNameIndex(*Obj, Symbol, SectionName, SectionIndex);
806 std::string FullSymbolName = getFullSymbolName(*Obj, Symbol, IsDynamic);
807
808 DictScope D(W, "Symbol");
809 W.printNumber("Name", FullSymbolName, Symbol->st_name);
810 W.printHex ("Value", Symbol->st_value);
811 W.printNumber("Size", Symbol->st_size);
812 W.printEnum ("Binding", Symbol->getBinding(),
813 makeArrayRef(ElfSymbolBindings));
814 W.printEnum ("Type", Symbol->getType(), makeArrayRef(ElfSymbolTypes));
815 W.printNumber("Other", Symbol->st_other);
816 W.printHex("Section", SectionName, SectionIndex);
817 }
818
819 #define LLVM_READOBJ_TYPE_CASE(name) \
820 case DT_##name: return #name
821
getTypeString(uint64_t Type)822 static const char *getTypeString(uint64_t Type) {
823 switch (Type) {
824 LLVM_READOBJ_TYPE_CASE(BIND_NOW);
825 LLVM_READOBJ_TYPE_CASE(DEBUG);
826 LLVM_READOBJ_TYPE_CASE(FINI);
827 LLVM_READOBJ_TYPE_CASE(FINI_ARRAY);
828 LLVM_READOBJ_TYPE_CASE(FINI_ARRAYSZ);
829 LLVM_READOBJ_TYPE_CASE(FLAGS);
830 LLVM_READOBJ_TYPE_CASE(FLAGS_1);
831 LLVM_READOBJ_TYPE_CASE(HASH);
832 LLVM_READOBJ_TYPE_CASE(INIT);
833 LLVM_READOBJ_TYPE_CASE(INIT_ARRAY);
834 LLVM_READOBJ_TYPE_CASE(INIT_ARRAYSZ);
835 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAY);
836 LLVM_READOBJ_TYPE_CASE(PREINIT_ARRAYSZ);
837 LLVM_READOBJ_TYPE_CASE(JMPREL);
838 LLVM_READOBJ_TYPE_CASE(NEEDED);
839 LLVM_READOBJ_TYPE_CASE(NULL);
840 LLVM_READOBJ_TYPE_CASE(PLTGOT);
841 LLVM_READOBJ_TYPE_CASE(PLTREL);
842 LLVM_READOBJ_TYPE_CASE(PLTRELSZ);
843 LLVM_READOBJ_TYPE_CASE(REL);
844 LLVM_READOBJ_TYPE_CASE(RELA);
845 LLVM_READOBJ_TYPE_CASE(RELENT);
846 LLVM_READOBJ_TYPE_CASE(RELSZ);
847 LLVM_READOBJ_TYPE_CASE(RELAENT);
848 LLVM_READOBJ_TYPE_CASE(RELASZ);
849 LLVM_READOBJ_TYPE_CASE(RPATH);
850 LLVM_READOBJ_TYPE_CASE(RUNPATH);
851 LLVM_READOBJ_TYPE_CASE(SONAME);
852 LLVM_READOBJ_TYPE_CASE(STRSZ);
853 LLVM_READOBJ_TYPE_CASE(STRTAB);
854 LLVM_READOBJ_TYPE_CASE(SYMBOLIC);
855 LLVM_READOBJ_TYPE_CASE(SYMENT);
856 LLVM_READOBJ_TYPE_CASE(SYMTAB);
857 LLVM_READOBJ_TYPE_CASE(TEXTREL);
858 LLVM_READOBJ_TYPE_CASE(VERNEED);
859 LLVM_READOBJ_TYPE_CASE(VERNEEDNUM);
860 LLVM_READOBJ_TYPE_CASE(VERSYM);
861 LLVM_READOBJ_TYPE_CASE(RELCOUNT);
862 LLVM_READOBJ_TYPE_CASE(GNU_HASH);
863 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_VERSION);
864 LLVM_READOBJ_TYPE_CASE(MIPS_FLAGS);
865 LLVM_READOBJ_TYPE_CASE(MIPS_BASE_ADDRESS);
866 LLVM_READOBJ_TYPE_CASE(MIPS_LOCAL_GOTNO);
867 LLVM_READOBJ_TYPE_CASE(MIPS_SYMTABNO);
868 LLVM_READOBJ_TYPE_CASE(MIPS_UNREFEXTNO);
869 LLVM_READOBJ_TYPE_CASE(MIPS_GOTSYM);
870 LLVM_READOBJ_TYPE_CASE(MIPS_RLD_MAP);
871 LLVM_READOBJ_TYPE_CASE(MIPS_PLTGOT);
872 LLVM_READOBJ_TYPE_CASE(MIPS_OPTIONS);
873 default: return "unknown";
874 }
875 }
876
877 #undef LLVM_READOBJ_TYPE_CASE
878
879 #define LLVM_READOBJ_DT_FLAG_ENT(prefix, enum) \
880 { #enum, prefix##_##enum }
881
882 static const EnumEntry<unsigned> ElfDynamicDTFlags[] = {
883 LLVM_READOBJ_DT_FLAG_ENT(DF, ORIGIN),
884 LLVM_READOBJ_DT_FLAG_ENT(DF, SYMBOLIC),
885 LLVM_READOBJ_DT_FLAG_ENT(DF, TEXTREL),
886 LLVM_READOBJ_DT_FLAG_ENT(DF, BIND_NOW),
887 LLVM_READOBJ_DT_FLAG_ENT(DF, STATIC_TLS)
888 };
889
890 static const EnumEntry<unsigned> ElfDynamicDTFlags1[] = {
891 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOW),
892 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAL),
893 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GROUP),
894 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODELETE),
895 LLVM_READOBJ_DT_FLAG_ENT(DF_1, LOADFLTR),
896 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INITFIRST),
897 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOOPEN),
898 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ORIGIN),
899 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DIRECT),
900 LLVM_READOBJ_DT_FLAG_ENT(DF_1, TRANS),
901 LLVM_READOBJ_DT_FLAG_ENT(DF_1, INTERPOSE),
902 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODEFLIB),
903 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODUMP),
904 LLVM_READOBJ_DT_FLAG_ENT(DF_1, CONFALT),
905 LLVM_READOBJ_DT_FLAG_ENT(DF_1, ENDFILTEE),
906 LLVM_READOBJ_DT_FLAG_ENT(DF_1, DISPRELDNE),
907 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NODIRECT),
908 LLVM_READOBJ_DT_FLAG_ENT(DF_1, IGNMULDEF),
909 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOKSYMS),
910 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NOHDR),
911 LLVM_READOBJ_DT_FLAG_ENT(DF_1, EDITED),
912 LLVM_READOBJ_DT_FLAG_ENT(DF_1, NORELOC),
913 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SYMINTPOSE),
914 LLVM_READOBJ_DT_FLAG_ENT(DF_1, GLOBAUDIT),
915 LLVM_READOBJ_DT_FLAG_ENT(DF_1, SINGLETON)
916 };
917
918 static const EnumEntry<unsigned> ElfDynamicDTMipsFlags[] = {
919 LLVM_READOBJ_DT_FLAG_ENT(RHF, NONE),
920 LLVM_READOBJ_DT_FLAG_ENT(RHF, QUICKSTART),
921 LLVM_READOBJ_DT_FLAG_ENT(RHF, NOTPOT),
922 LLVM_READOBJ_DT_FLAG_ENT(RHS, NO_LIBRARY_REPLACEMENT),
923 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_MOVE),
924 LLVM_READOBJ_DT_FLAG_ENT(RHF, SGI_ONLY),
925 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_INIT),
926 LLVM_READOBJ_DT_FLAG_ENT(RHF, DELTA_C_PLUS_PLUS),
927 LLVM_READOBJ_DT_FLAG_ENT(RHF, GUARANTEE_START_INIT),
928 LLVM_READOBJ_DT_FLAG_ENT(RHF, PIXIE),
929 LLVM_READOBJ_DT_FLAG_ENT(RHF, DEFAULT_DELAY_LOAD),
930 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTART),
931 LLVM_READOBJ_DT_FLAG_ENT(RHF, REQUICKSTARTED),
932 LLVM_READOBJ_DT_FLAG_ENT(RHF, CORD),
933 LLVM_READOBJ_DT_FLAG_ENT(RHF, NO_UNRES_UNDEF),
934 LLVM_READOBJ_DT_FLAG_ENT(RHF, RLD_ORDER_SAFE)
935 };
936
937 #undef LLVM_READOBJ_DT_FLAG_ENT
938
939 template <typename T, typename TFlag>
printFlags(T Value,ArrayRef<EnumEntry<TFlag>> Flags,raw_ostream & OS)940 void printFlags(T Value, ArrayRef<EnumEntry<TFlag>> Flags, raw_ostream &OS) {
941 typedef EnumEntry<TFlag> FlagEntry;
942 typedef SmallVector<FlagEntry, 10> FlagVector;
943 FlagVector SetFlags;
944
945 for (const auto &Flag : Flags) {
946 if (Flag.Value == 0)
947 continue;
948
949 if ((Value & Flag.Value) == Flag.Value)
950 SetFlags.push_back(Flag);
951 }
952
953 for (const auto &Flag : SetFlags) {
954 OS << Flag.Name << " ";
955 }
956 }
957
958 template <class ELFT>
printValue(const ELFFile<ELFT> * O,uint64_t Type,uint64_t Value,bool Is64,raw_ostream & OS)959 static void printValue(const ELFFile<ELFT> *O, uint64_t Type, uint64_t Value,
960 bool Is64, raw_ostream &OS) {
961 switch (Type) {
962 case DT_PLTREL:
963 if (Value == DT_REL) {
964 OS << "REL";
965 break;
966 } else if (Value == DT_RELA) {
967 OS << "RELA";
968 break;
969 }
970 // Fallthrough.
971 case DT_PLTGOT:
972 case DT_HASH:
973 case DT_STRTAB:
974 case DT_SYMTAB:
975 case DT_RELA:
976 case DT_INIT:
977 case DT_FINI:
978 case DT_REL:
979 case DT_JMPREL:
980 case DT_INIT_ARRAY:
981 case DT_FINI_ARRAY:
982 case DT_PREINIT_ARRAY:
983 case DT_DEBUG:
984 case DT_VERNEED:
985 case DT_VERSYM:
986 case DT_GNU_HASH:
987 case DT_NULL:
988 case DT_MIPS_BASE_ADDRESS:
989 case DT_MIPS_GOTSYM:
990 case DT_MIPS_RLD_MAP:
991 case DT_MIPS_PLTGOT:
992 case DT_MIPS_OPTIONS:
993 OS << format("0x%" PRIX64, Value);
994 break;
995 case DT_RELCOUNT:
996 case DT_VERNEEDNUM:
997 case DT_MIPS_RLD_VERSION:
998 case DT_MIPS_LOCAL_GOTNO:
999 case DT_MIPS_SYMTABNO:
1000 case DT_MIPS_UNREFEXTNO:
1001 OS << Value;
1002 break;
1003 case DT_PLTRELSZ:
1004 case DT_RELASZ:
1005 case DT_RELAENT:
1006 case DT_STRSZ:
1007 case DT_SYMENT:
1008 case DT_RELSZ:
1009 case DT_RELENT:
1010 case DT_INIT_ARRAYSZ:
1011 case DT_FINI_ARRAYSZ:
1012 case DT_PREINIT_ARRAYSZ:
1013 OS << Value << " (bytes)";
1014 break;
1015 case DT_NEEDED:
1016 OS << "SharedLibrary (" << O->getDynamicString(Value) << ")";
1017 break;
1018 case DT_SONAME:
1019 OS << "LibrarySoname (" << O->getDynamicString(Value) << ")";
1020 break;
1021 case DT_RPATH:
1022 case DT_RUNPATH:
1023 OS << O->getDynamicString(Value);
1024 break;
1025 case DT_MIPS_FLAGS:
1026 printFlags(Value, makeArrayRef(ElfDynamicDTMipsFlags), OS);
1027 break;
1028 case DT_FLAGS:
1029 printFlags(Value, makeArrayRef(ElfDynamicDTFlags), OS);
1030 break;
1031 case DT_FLAGS_1:
1032 printFlags(Value, makeArrayRef(ElfDynamicDTFlags1), OS);
1033 break;
1034 default:
1035 OS << format("0x%" PRIX64, Value);
1036 break;
1037 }
1038 }
1039
1040 template<class ELFT>
printUnwindInfo()1041 void ELFDumper<ELFT>::printUnwindInfo() {
1042 W.startLine() << "UnwindInfo not implemented.\n";
1043 }
1044
1045 namespace {
printUnwindInfo()1046 template <> void ELFDumper<ELFType<support::little, false>>::printUnwindInfo() {
1047 const unsigned Machine = Obj->getHeader()->e_machine;
1048 if (Machine == EM_ARM) {
1049 ARM::EHABI::PrinterContext<ELFType<support::little, false>> Ctx(W, Obj);
1050 return Ctx.PrintUnwindInformation();
1051 }
1052 W.startLine() << "UnwindInfo not implemented.\n";
1053 }
1054 }
1055
1056 template<class ELFT>
printDynamicTable()1057 void ELFDumper<ELFT>::printDynamicTable() {
1058 auto DynTable = Obj->dynamic_table(true);
1059
1060 ptrdiff_t Total = std::distance(DynTable.begin(), DynTable.end());
1061 if (Total == 0)
1062 return;
1063
1064 raw_ostream &OS = W.getOStream();
1065 W.startLine() << "DynamicSection [ (" << Total << " entries)\n";
1066
1067 bool Is64 = ELFT::Is64Bits;
1068
1069 W.startLine()
1070 << " Tag" << (Is64 ? " " : " ") << "Type"
1071 << " " << "Name/Value\n";
1072 for (const auto &Entry : DynTable) {
1073 W.startLine()
1074 << " "
1075 << format(Is64 ? "0x%016" PRIX64 : "0x%08" PRIX64, Entry.getTag())
1076 << " " << format("%-21s", getTypeString(Entry.getTag()));
1077 printValue(Obj, Entry.getTag(), Entry.getVal(), Is64, OS);
1078 OS << "\n";
1079 }
1080
1081 W.startLine() << "]\n";
1082 }
1083
1084 template<class ELFT>
printNeededLibraries()1085 void ELFDumper<ELFT>::printNeededLibraries() {
1086 ListScope D(W, "NeededLibraries");
1087
1088 typedef std::vector<StringRef> LibsTy;
1089 LibsTy Libs;
1090
1091 for (const auto &Entry : Obj->dynamic_table())
1092 if (Entry.d_tag == ELF::DT_NEEDED)
1093 Libs.push_back(Obj->getDynamicString(Entry.d_un.d_val));
1094
1095 std::stable_sort(Libs.begin(), Libs.end());
1096
1097 for (LibsTy::const_iterator I = Libs.begin(), E = Libs.end(); I != E; ++I) {
1098 outs() << " " << *I << "\n";
1099 }
1100 }
1101
1102 template<class ELFT>
printProgramHeaders()1103 void ELFDumper<ELFT>::printProgramHeaders() {
1104 ListScope L(W, "ProgramHeaders");
1105
1106 for (typename ELFO::Elf_Phdr_Iter PI = Obj->program_header_begin(),
1107 PE = Obj->program_header_end();
1108 PI != PE; ++PI) {
1109 DictScope P(W, "ProgramHeader");
1110 W.printHex ("Type",
1111 getElfSegmentType(Obj->getHeader()->e_machine, PI->p_type),
1112 PI->p_type);
1113 W.printHex ("Offset", PI->p_offset);
1114 W.printHex ("VirtualAddress", PI->p_vaddr);
1115 W.printHex ("PhysicalAddress", PI->p_paddr);
1116 W.printNumber("FileSize", PI->p_filesz);
1117 W.printNumber("MemSize", PI->p_memsz);
1118 W.printFlags ("Flags", PI->p_flags, makeArrayRef(ElfSegmentFlags));
1119 W.printNumber("Alignment", PI->p_align);
1120 }
1121 }
1122
1123 template <typename ELFT>
printHashTable()1124 void ELFDumper<ELFT>::printHashTable() {
1125 DictScope D(W, "HashTable");
1126 auto HT = Obj->getHashTable();
1127 if (!HT)
1128 return;
1129 W.printNumber("Num Buckets", HT->nbucket);
1130 W.printNumber("Num Chains", HT->nchain);
1131 W.printList("Buckets", HT->buckets());
1132 W.printList("Chains", HT->chains());
1133 }
1134
1135 template <class ELFT>
printAttributes()1136 void ELFDumper<ELFT>::printAttributes() {
1137 W.startLine() << "Attributes not implemented.\n";
1138 }
1139
1140 namespace {
printAttributes()1141 template <> void ELFDumper<ELFType<support::little, false>>::printAttributes() {
1142 if (Obj->getHeader()->e_machine != EM_ARM) {
1143 W.startLine() << "Attributes not implemented.\n";
1144 return;
1145 }
1146
1147 DictScope BA(W, "BuildAttributes");
1148 for (const ELFO::Elf_Shdr &Sec : Obj->sections()) {
1149 if (Sec.sh_type != ELF::SHT_ARM_ATTRIBUTES)
1150 continue;
1151
1152 ErrorOr<ArrayRef<uint8_t>> Contents = Obj->getSectionContents(&Sec);
1153 if (!Contents)
1154 continue;
1155
1156 if ((*Contents)[0] != ARMBuildAttrs::Format_Version) {
1157 errs() << "unrecognised FormatVersion: 0x" << utohexstr((*Contents)[0])
1158 << '\n';
1159 continue;
1160 }
1161
1162 W.printHex("FormatVersion", (*Contents)[0]);
1163 if (Contents->size() == 1)
1164 continue;
1165
1166 ARMAttributeParser(W).Parse(*Contents);
1167 }
1168 }
1169 }
1170
1171 namespace {
1172 template <class ELFT> class MipsGOTParser {
1173 public:
1174 typedef object::ELFFile<ELFT> ObjectFile;
1175 typedef typename ObjectFile::Elf_Shdr Elf_Shdr;
1176 typedef typename ObjectFile::Elf_Sym Elf_Sym;
1177
1178 MipsGOTParser(const ObjectFile *Obj, StreamWriter &W);
1179
1180 void parseGOT();
1181 void parsePLT();
1182
1183 private:
1184 typedef typename ObjectFile::Elf_Addr GOTEntry;
1185 typedef typename ObjectFile::template ELFEntityIterator<const GOTEntry>
1186 GOTIter;
1187
1188 const ObjectFile *Obj;
1189 StreamWriter &W;
1190 llvm::Optional<uint64_t> DtPltGot;
1191 llvm::Optional<uint64_t> DtLocalGotNum;
1192 llvm::Optional<uint64_t> DtGotSym;
1193 llvm::Optional<uint64_t> DtMipsPltGot;
1194 llvm::Optional<uint64_t> DtJmpRel;
1195
1196 std::size_t getGOTTotal(ArrayRef<uint8_t> GOT) const;
1197 GOTIter makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum);
1198
1199 void printGotEntry(uint64_t GotAddr, GOTIter BeginIt, GOTIter It);
1200 void printGlobalGotEntry(uint64_t GotAddr, GOTIter BeginIt, GOTIter It,
1201 const Elf_Sym *Sym, bool IsDynamic);
1202 void printPLTEntry(uint64_t PLTAddr, GOTIter BeginIt, GOTIter It,
1203 StringRef Purpose);
1204 void printPLTEntry(uint64_t PLTAddr, GOTIter BeginIt, GOTIter It,
1205 const Elf_Sym *Sym);
1206 };
1207 }
1208
1209 template <class ELFT>
MipsGOTParser(const ObjectFile * Obj,StreamWriter & W)1210 MipsGOTParser<ELFT>::MipsGOTParser(const ObjectFile *Obj, StreamWriter &W)
1211 : Obj(Obj), W(W) {
1212 for (const auto &Entry : Obj->dynamic_table()) {
1213 switch (Entry.getTag()) {
1214 case ELF::DT_PLTGOT:
1215 DtPltGot = Entry.getVal();
1216 break;
1217 case ELF::DT_MIPS_LOCAL_GOTNO:
1218 DtLocalGotNum = Entry.getVal();
1219 break;
1220 case ELF::DT_MIPS_GOTSYM:
1221 DtGotSym = Entry.getVal();
1222 break;
1223 case ELF::DT_MIPS_PLTGOT:
1224 DtMipsPltGot = Entry.getVal();
1225 break;
1226 case ELF::DT_JMPREL:
1227 DtJmpRel = Entry.getVal();
1228 break;
1229 }
1230 }
1231 }
1232
parseGOT()1233 template <class ELFT> void MipsGOTParser<ELFT>::parseGOT() {
1234 // See "Global Offset Table" in Chapter 5 in the following document
1235 // for detailed GOT description.
1236 // ftp://www.linux-mips.org/pub/linux/mips/doc/ABI/mipsabi.pdf
1237 if (!DtPltGot) {
1238 W.startLine() << "Cannot find PLTGOT dynamic table tag.\n";
1239 return;
1240 }
1241 if (!DtLocalGotNum) {
1242 W.startLine() << "Cannot find MIPS_LOCAL_GOTNO dynamic table tag.\n";
1243 return;
1244 }
1245 if (!DtGotSym) {
1246 W.startLine() << "Cannot find MIPS_GOTSYM dynamic table tag.\n";
1247 return;
1248 }
1249
1250 const Elf_Shdr *GOTShdr = findSectionByAddress(Obj, *DtPltGot);
1251 if (!GOTShdr) {
1252 W.startLine() << "There is no .got section in the file.\n";
1253 return;
1254 }
1255
1256 ErrorOr<ArrayRef<uint8_t>> GOT = Obj->getSectionContents(GOTShdr);
1257 if (!GOT) {
1258 W.startLine() << "The .got section is empty.\n";
1259 return;
1260 }
1261
1262 if (*DtLocalGotNum > getGOTTotal(*GOT)) {
1263 W.startLine() << "MIPS_LOCAL_GOTNO exceeds a number of GOT entries.\n";
1264 return;
1265 }
1266
1267 const Elf_Sym *DynSymBegin = Obj->dynamic_symbol_begin();
1268 const Elf_Sym *DynSymEnd = Obj->dynamic_symbol_end();
1269 std::size_t DynSymTotal = std::size_t(std::distance(DynSymBegin, DynSymEnd));
1270
1271 if (*DtGotSym > DynSymTotal) {
1272 W.startLine() << "MIPS_GOTSYM exceeds a number of dynamic symbols.\n";
1273 return;
1274 }
1275
1276 std::size_t GlobalGotNum = DynSymTotal - *DtGotSym;
1277
1278 if (*DtLocalGotNum + GlobalGotNum > getGOTTotal(*GOT)) {
1279 W.startLine() << "Number of global GOT entries exceeds the size of GOT.\n";
1280 return;
1281 }
1282
1283 GOTIter GotBegin = makeGOTIter(*GOT, 0);
1284 GOTIter GotLocalEnd = makeGOTIter(*GOT, *DtLocalGotNum);
1285 GOTIter It = GotBegin;
1286
1287 DictScope GS(W, "Primary GOT");
1288
1289 W.printHex("Canonical gp value", GOTShdr->sh_addr + 0x7ff0);
1290 {
1291 ListScope RS(W, "Reserved entries");
1292
1293 {
1294 DictScope D(W, "Entry");
1295 printGotEntry(GOTShdr->sh_addr, GotBegin, It++);
1296 W.printString("Purpose", StringRef("Lazy resolver"));
1297 }
1298
1299 if (It != GotLocalEnd && (*It >> (sizeof(GOTEntry) * 8 - 1)) != 0) {
1300 DictScope D(W, "Entry");
1301 printGotEntry(GOTShdr->sh_addr, GotBegin, It++);
1302 W.printString("Purpose", StringRef("Module pointer (GNU extension)"));
1303 }
1304 }
1305 {
1306 ListScope LS(W, "Local entries");
1307 for (; It != GotLocalEnd; ++It) {
1308 DictScope D(W, "Entry");
1309 printGotEntry(GOTShdr->sh_addr, GotBegin, It);
1310 }
1311 }
1312 {
1313 ListScope GS(W, "Global entries");
1314
1315 GOTIter GotGlobalEnd = makeGOTIter(*GOT, *DtLocalGotNum + GlobalGotNum);
1316 const Elf_Sym *GotDynSym = DynSymBegin + *DtGotSym;
1317 for (; It != GotGlobalEnd; ++It) {
1318 DictScope D(W, "Entry");
1319 printGlobalGotEntry(GOTShdr->sh_addr, GotBegin, It, GotDynSym++, true);
1320 }
1321 }
1322
1323 std::size_t SpecGotNum = getGOTTotal(*GOT) - *DtLocalGotNum - GlobalGotNum;
1324 W.printNumber("Number of TLS and multi-GOT entries", uint64_t(SpecGotNum));
1325 }
1326
parsePLT()1327 template <class ELFT> void MipsGOTParser<ELFT>::parsePLT() {
1328 if (!DtMipsPltGot) {
1329 W.startLine() << "Cannot find MIPS_PLTGOT dynamic table tag.\n";
1330 return;
1331 }
1332 if (!DtJmpRel) {
1333 W.startLine() << "Cannot find JMPREL dynamic table tag.\n";
1334 return;
1335 }
1336
1337 const Elf_Shdr *PLTShdr = findSectionByAddress(Obj, *DtMipsPltGot);
1338 if (!PLTShdr) {
1339 W.startLine() << "There is no .got.plt section in the file.\n";
1340 return;
1341 }
1342 ErrorOr<ArrayRef<uint8_t>> PLT = Obj->getSectionContents(PLTShdr);
1343 if (!PLT) {
1344 W.startLine() << "The .got.plt section is empty.\n";
1345 return;
1346 }
1347
1348 const Elf_Shdr *PLTRelShdr = findSectionByAddress(Obj, *DtJmpRel);
1349 if (!PLTShdr) {
1350 W.startLine() << "There is no .rel.plt section in the file.\n";
1351 return;
1352 }
1353
1354 GOTIter PLTBegin = makeGOTIter(*PLT, 0);
1355 GOTIter PLTEnd = makeGOTIter(*PLT, getGOTTotal(*PLT));
1356 GOTIter It = PLTBegin;
1357
1358 DictScope GS(W, "PLT GOT");
1359 {
1360 ListScope RS(W, "Reserved entries");
1361 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "PLT lazy resolver");
1362 if (It != PLTEnd)
1363 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It++, "Module pointer");
1364 }
1365 {
1366 ListScope GS(W, "Entries");
1367
1368 switch (PLTRelShdr->sh_type) {
1369 case ELF::SHT_REL:
1370 for (typename ObjectFile::Elf_Rel_Iter RI = Obj->rel_begin(PLTRelShdr),
1371 RE = Obj->rel_end(PLTRelShdr);
1372 RI != RE && It != PLTEnd; ++RI, ++It) {
1373 const Elf_Sym *Sym =
1374 Obj->getRelocationSymbol(&*PLTRelShdr, &*RI).second;
1375 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, Sym);
1376 }
1377 break;
1378 case ELF::SHT_RELA:
1379 for (typename ObjectFile::Elf_Rela_Iter RI = Obj->rela_begin(PLTRelShdr),
1380 RE = Obj->rela_end(PLTRelShdr);
1381 RI != RE && It != PLTEnd; ++RI, ++It) {
1382 const Elf_Sym *Sym =
1383 Obj->getRelocationSymbol(&*PLTRelShdr, &*RI).second;
1384 printPLTEntry(PLTShdr->sh_addr, PLTBegin, It, Sym);
1385 }
1386 break;
1387 }
1388 }
1389 }
1390
1391 template <class ELFT>
getGOTTotal(ArrayRef<uint8_t> GOT) const1392 std::size_t MipsGOTParser<ELFT>::getGOTTotal(ArrayRef<uint8_t> GOT) const {
1393 return GOT.size() / sizeof(GOTEntry);
1394 }
1395
1396 template <class ELFT>
1397 typename MipsGOTParser<ELFT>::GOTIter
makeGOTIter(ArrayRef<uint8_t> GOT,std::size_t EntryNum)1398 MipsGOTParser<ELFT>::makeGOTIter(ArrayRef<uint8_t> GOT, std::size_t EntryNum) {
1399 const char *Data = reinterpret_cast<const char *>(GOT.data());
1400 return GOTIter(sizeof(GOTEntry), Data + EntryNum * sizeof(GOTEntry));
1401 }
1402
1403 template <class ELFT>
printGotEntry(uint64_t GotAddr,GOTIter BeginIt,GOTIter It)1404 void MipsGOTParser<ELFT>::printGotEntry(uint64_t GotAddr, GOTIter BeginIt,
1405 GOTIter It) {
1406 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry);
1407 W.printHex("Address", GotAddr + Offset);
1408 W.printNumber("Access", Offset - 0x7ff0);
1409 W.printHex("Initial", *It);
1410 }
1411
1412 template <class ELFT>
printGlobalGotEntry(uint64_t GotAddr,GOTIter BeginIt,GOTIter It,const Elf_Sym * Sym,bool IsDynamic)1413 void MipsGOTParser<ELFT>::printGlobalGotEntry(uint64_t GotAddr, GOTIter BeginIt,
1414 GOTIter It, const Elf_Sym *Sym,
1415 bool IsDynamic) {
1416 printGotEntry(GotAddr, BeginIt, It);
1417
1418 W.printHex("Value", Sym->st_value);
1419 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes));
1420
1421 unsigned SectionIndex = 0;
1422 StringRef SectionName;
1423 getSectionNameIndex(*Obj, Sym, SectionName, SectionIndex);
1424 W.printHex("Section", SectionName, SectionIndex);
1425
1426 std::string FullSymbolName = getFullSymbolName(*Obj, Sym, IsDynamic);
1427 W.printNumber("Name", FullSymbolName, Sym->st_name);
1428 }
1429
1430 template <class ELFT>
printPLTEntry(uint64_t PLTAddr,GOTIter BeginIt,GOTIter It,StringRef Purpose)1431 void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, GOTIter BeginIt,
1432 GOTIter It, StringRef Purpose) {
1433 DictScope D(W, "Entry");
1434 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry);
1435 W.printHex("Address", PLTAddr + Offset);
1436 W.printHex("Initial", *It);
1437 W.printString("Purpose", Purpose);
1438 }
1439
1440 template <class ELFT>
printPLTEntry(uint64_t PLTAddr,GOTIter BeginIt,GOTIter It,const Elf_Sym * Sym)1441 void MipsGOTParser<ELFT>::printPLTEntry(uint64_t PLTAddr, GOTIter BeginIt,
1442 GOTIter It, const Elf_Sym *Sym) {
1443 DictScope D(W, "Entry");
1444 int64_t Offset = std::distance(BeginIt, It) * sizeof(GOTEntry);
1445 W.printHex("Address", PLTAddr + Offset);
1446 W.printHex("Initial", *It);
1447 W.printHex("Value", Sym->st_value);
1448 W.printEnum("Type", Sym->getType(), makeArrayRef(ElfSymbolTypes));
1449
1450 unsigned SectionIndex = 0;
1451 StringRef SectionName;
1452 getSectionNameIndex(*Obj, Sym, SectionName, SectionIndex);
1453 W.printHex("Section", SectionName, SectionIndex);
1454
1455 std::string FullSymbolName = getFullSymbolName(*Obj, Sym, true);
1456 W.printNumber("Name", FullSymbolName, Sym->st_name);
1457 }
1458
printMipsPLTGOT()1459 template <class ELFT> void ELFDumper<ELFT>::printMipsPLTGOT() {
1460 if (Obj->getHeader()->e_machine != EM_MIPS) {
1461 W.startLine() << "MIPS PLT GOT is available for MIPS targets only.\n";
1462 return;
1463 }
1464
1465 MipsGOTParser<ELFT> GOTParser(Obj, W);
1466 GOTParser.parseGOT();
1467 GOTParser.parsePLT();
1468 }
1469
1470 static const EnumEntry<unsigned> ElfMipsISAExtType[] = {
1471 {"None", Mips::AFL_EXT_NONE},
1472 {"Broadcom SB-1", Mips::AFL_EXT_SB1},
1473 {"Cavium Networks Octeon", Mips::AFL_EXT_OCTEON},
1474 {"Cavium Networks Octeon2", Mips::AFL_EXT_OCTEON2},
1475 {"Cavium Networks OcteonP", Mips::AFL_EXT_OCTEONP},
1476 {"Cavium Networks Octeon3", Mips::AFL_EXT_OCTEON3},
1477 {"LSI R4010", Mips::AFL_EXT_4010},
1478 {"Loongson 2E", Mips::AFL_EXT_LOONGSON_2E},
1479 {"Loongson 2F", Mips::AFL_EXT_LOONGSON_2F},
1480 {"Loongson 3A", Mips::AFL_EXT_LOONGSON_3A},
1481 {"MIPS R4650", Mips::AFL_EXT_4650},
1482 {"MIPS R5900", Mips::AFL_EXT_5900},
1483 {"MIPS R10000", Mips::AFL_EXT_10000},
1484 {"NEC VR4100", Mips::AFL_EXT_4100},
1485 {"NEC VR4111/VR4181", Mips::AFL_EXT_4111},
1486 {"NEC VR4120", Mips::AFL_EXT_4120},
1487 {"NEC VR5400", Mips::AFL_EXT_5400},
1488 {"NEC VR5500", Mips::AFL_EXT_5500},
1489 {"RMI Xlr", Mips::AFL_EXT_XLR},
1490 {"Toshiba R3900", Mips::AFL_EXT_3900}
1491 };
1492
1493 static const EnumEntry<unsigned> ElfMipsASEFlags[] = {
1494 {"DSP", Mips::AFL_ASE_DSP},
1495 {"DSPR2", Mips::AFL_ASE_DSPR2},
1496 {"Enhanced VA Scheme", Mips::AFL_ASE_EVA},
1497 {"MCU", Mips::AFL_ASE_MCU},
1498 {"MDMX", Mips::AFL_ASE_MDMX},
1499 {"MIPS-3D", Mips::AFL_ASE_MIPS3D},
1500 {"MT", Mips::AFL_ASE_MT},
1501 {"SmartMIPS", Mips::AFL_ASE_SMARTMIPS},
1502 {"VZ", Mips::AFL_ASE_VIRT},
1503 {"MSA", Mips::AFL_ASE_MSA},
1504 {"MIPS16", Mips::AFL_ASE_MIPS16},
1505 {"microMIPS", Mips::AFL_ASE_MICROMIPS},
1506 {"XPA", Mips::AFL_ASE_XPA}
1507 };
1508
1509 static const EnumEntry<unsigned> ElfMipsFpABIType[] = {
1510 {"Hard or soft float", Mips::Val_GNU_MIPS_ABI_FP_ANY},
1511 {"Hard float (double precision)", Mips::Val_GNU_MIPS_ABI_FP_DOUBLE},
1512 {"Hard float (single precision)", Mips::Val_GNU_MIPS_ABI_FP_SINGLE},
1513 {"Soft float", Mips::Val_GNU_MIPS_ABI_FP_SOFT},
1514 {"Hard float (MIPS32r2 64-bit FPU 12 callee-saved)",
1515 Mips::Val_GNU_MIPS_ABI_FP_OLD_64},
1516 {"Hard float (32-bit CPU, Any FPU)", Mips::Val_GNU_MIPS_ABI_FP_XX},
1517 {"Hard float (32-bit CPU, 64-bit FPU)", Mips::Val_GNU_MIPS_ABI_FP_64},
1518 {"Hard float compat (32-bit CPU, 64-bit FPU)",
1519 Mips::Val_GNU_MIPS_ABI_FP_64A}
1520 };
1521
1522 static const EnumEntry<unsigned> ElfMipsFlags1[] {
1523 {"ODDSPREG", Mips::AFL_FLAGS1_ODDSPREG},
1524 };
1525
getMipsRegisterSize(uint8_t Flag)1526 static int getMipsRegisterSize(uint8_t Flag) {
1527 switch (Flag) {
1528 case Mips::AFL_REG_NONE:
1529 return 0;
1530 case Mips::AFL_REG_32:
1531 return 32;
1532 case Mips::AFL_REG_64:
1533 return 64;
1534 case Mips::AFL_REG_128:
1535 return 128;
1536 default:
1537 return -1;
1538 }
1539 }
1540
printMipsABIFlags()1541 template <class ELFT> void ELFDumper<ELFT>::printMipsABIFlags() {
1542 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".MIPS.abiflags");
1543 if (!Shdr) {
1544 W.startLine() << "There is no .MIPS.abiflags section in the file.\n";
1545 return;
1546 }
1547 ErrorOr<ArrayRef<uint8_t>> Sec = Obj->getSectionContents(Shdr);
1548 if (!Sec) {
1549 W.startLine() << "The .MIPS.abiflags section is empty.\n";
1550 return;
1551 }
1552 if (Sec->size() != sizeof(Elf_Mips_ABIFlags<ELFT>)) {
1553 W.startLine() << "The .MIPS.abiflags section has a wrong size.\n";
1554 return;
1555 }
1556
1557 auto *Flags = reinterpret_cast<const Elf_Mips_ABIFlags<ELFT> *>(Sec->data());
1558
1559 raw_ostream &OS = W.getOStream();
1560 DictScope GS(W, "MIPS ABI Flags");
1561
1562 W.printNumber("Version", Flags->version);
1563 W.startLine() << "ISA: ";
1564 if (Flags->isa_rev <= 1)
1565 OS << format("MIPS%u", Flags->isa_level);
1566 else
1567 OS << format("MIPS%ur%u", Flags->isa_level, Flags->isa_rev);
1568 OS << "\n";
1569 W.printEnum("ISA Extension", Flags->isa_ext, makeArrayRef(ElfMipsISAExtType));
1570 W.printFlags("ASEs", Flags->ases, makeArrayRef(ElfMipsASEFlags));
1571 W.printEnum("FP ABI", Flags->fp_abi, makeArrayRef(ElfMipsFpABIType));
1572 W.printNumber("GPR size", getMipsRegisterSize(Flags->gpr_size));
1573 W.printNumber("CPR1 size", getMipsRegisterSize(Flags->cpr1_size));
1574 W.printNumber("CPR2 size", getMipsRegisterSize(Flags->cpr2_size));
1575 W.printFlags("Flags 1", Flags->flags1, makeArrayRef(ElfMipsFlags1));
1576 W.printHex("Flags 2", Flags->flags2);
1577 }
1578
printMipsReginfo()1579 template <class ELFT> void ELFDumper<ELFT>::printMipsReginfo() {
1580 const Elf_Shdr *Shdr = findSectionByName(*Obj, ".reginfo");
1581 if (!Shdr) {
1582 W.startLine() << "There is no .reginfo section in the file.\n";
1583 return;
1584 }
1585 ErrorOr<ArrayRef<uint8_t>> Sec = Obj->getSectionContents(Shdr);
1586 if (!Sec) {
1587 W.startLine() << "The .reginfo section is empty.\n";
1588 return;
1589 }
1590 if (Sec->size() != sizeof(Elf_Mips_RegInfo<ELFT>)) {
1591 W.startLine() << "The .reginfo section has a wrong size.\n";
1592 return;
1593 }
1594
1595 auto *Reginfo = reinterpret_cast<const Elf_Mips_RegInfo<ELFT> *>(Sec->data());
1596
1597 DictScope GS(W, "MIPS RegInfo");
1598 W.printHex("GP", Reginfo->ri_gp_value);
1599 W.printHex("General Mask", Reginfo->ri_gprmask);
1600 W.printHex("Co-Proc Mask0", Reginfo->ri_cprmask[0]);
1601 W.printHex("Co-Proc Mask1", Reginfo->ri_cprmask[1]);
1602 W.printHex("Co-Proc Mask2", Reginfo->ri_cprmask[2]);
1603 W.printHex("Co-Proc Mask3", Reginfo->ri_cprmask[3]);
1604 }
1605
printStackMap() const1606 template <class ELFT> void ELFDumper<ELFT>::printStackMap() const {
1607 const typename ELFFile<ELFT>::Elf_Shdr *StackMapSection = nullptr;
1608 for (const auto &Sec : Obj->sections()) {
1609 ErrorOr<StringRef> Name = Obj->getSectionName(&Sec);
1610 if (*Name == ".llvm_stackmaps") {
1611 StackMapSection = &Sec;
1612 break;
1613 }
1614 }
1615
1616 if (!StackMapSection)
1617 return;
1618
1619 StringRef StackMapContents;
1620 ErrorOr<ArrayRef<uint8_t>> StackMapContentsArray =
1621 Obj->getSectionContents(StackMapSection);
1622
1623 prettyPrintStackMap(
1624 llvm::outs(),
1625 StackMapV1Parser<ELFT::TargetEndianness>(*StackMapContentsArray));
1626 }
1627