1 //===- ELF.h - ELF object file implementation -------------------*- 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 // This file declares the ELFObjectFile template class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_OBJECT_ELF_H 15 #define LLVM_OBJECT_ELF_H 16 17 #include "llvm/ADT/DenseMap.h" 18 #include "llvm/ADT/PointerIntPair.h" 19 #include "llvm/ADT/SmallVector.h" 20 #include "llvm/ADT/StringSwitch.h" 21 #include "llvm/ADT/Triple.h" 22 #include "llvm/Object/ObjectFile.h" 23 #include "llvm/Support/Casting.h" 24 #include "llvm/Support/ELF.h" 25 #include "llvm/Support/Endian.h" 26 #include "llvm/Support/ErrorHandling.h" 27 #include "llvm/Support/MemoryBuffer.h" 28 #include "llvm/Support/raw_ostream.h" 29 #include <algorithm> 30 #include <limits> 31 #include <utility> 32 33 #include <ctype.h> 34 35 namespace llvm { 36 namespace object { 37 38 using support::endianness; 39 40 template<endianness target_endianness, std::size_t max_alignment, bool is64Bits> 41 struct ELFType { 42 static const endianness TargetEndianness = target_endianness; 43 static const std::size_t MaxAlignment = max_alignment; 44 static const bool Is64Bits = is64Bits; 45 }; 46 47 template<typename T, int max_align> 48 struct MaximumAlignment { 49 enum {value = AlignOf<T>::Alignment > max_align ? max_align 50 : AlignOf<T>::Alignment}; 51 }; 52 53 // Subclasses of ELFObjectFile may need this for template instantiation 54 inline std::pair<unsigned char, unsigned char> 55 getElfArchType(MemoryBuffer *Object) { 56 if (Object->getBufferSize() < ELF::EI_NIDENT) 57 return std::make_pair((uint8_t)ELF::ELFCLASSNONE,(uint8_t)ELF::ELFDATANONE); 58 return std::make_pair( (uint8_t)Object->getBufferStart()[ELF::EI_CLASS] 59 , (uint8_t)Object->getBufferStart()[ELF::EI_DATA]); 60 } 61 62 // Templates to choose Elf_Addr and Elf_Off depending on is64Bits. 63 template<endianness target_endianness, std::size_t max_alignment> 64 struct ELFDataTypeTypedefHelperCommon { 65 typedef support::detail::packed_endian_specific_integral 66 <uint16_t, target_endianness, 67 MaximumAlignment<uint16_t, max_alignment>::value> Elf_Half; 68 typedef support::detail::packed_endian_specific_integral 69 <uint32_t, target_endianness, 70 MaximumAlignment<uint32_t, max_alignment>::value> Elf_Word; 71 typedef support::detail::packed_endian_specific_integral 72 <int32_t, target_endianness, 73 MaximumAlignment<int32_t, max_alignment>::value> Elf_Sword; 74 typedef support::detail::packed_endian_specific_integral 75 <uint64_t, target_endianness, 76 MaximumAlignment<uint64_t, max_alignment>::value> Elf_Xword; 77 typedef support::detail::packed_endian_specific_integral 78 <int64_t, target_endianness, 79 MaximumAlignment<int64_t, max_alignment>::value> Elf_Sxword; 80 }; 81 82 template<class ELFT> 83 struct ELFDataTypeTypedefHelper; 84 85 /// ELF 32bit types. 86 template<template<endianness, std::size_t, bool> class ELFT, 87 endianness TargetEndianness, std::size_t MaxAlign> 88 struct ELFDataTypeTypedefHelper<ELFT<TargetEndianness, MaxAlign, false> > 89 : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> { 90 typedef uint32_t value_type; 91 typedef support::detail::packed_endian_specific_integral 92 <value_type, TargetEndianness, 93 MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr; 94 typedef support::detail::packed_endian_specific_integral 95 <value_type, TargetEndianness, 96 MaximumAlignment<value_type, MaxAlign>::value> Elf_Off; 97 }; 98 99 /// ELF 64bit types. 100 template<template<endianness, std::size_t, bool> class ELFT, 101 endianness TargetEndianness, std::size_t MaxAlign> 102 struct ELFDataTypeTypedefHelper<ELFT<TargetEndianness, MaxAlign, true> > 103 : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> { 104 typedef uint64_t value_type; 105 typedef support::detail::packed_endian_specific_integral 106 <value_type, TargetEndianness, 107 MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr; 108 typedef support::detail::packed_endian_specific_integral 109 <value_type, TargetEndianness, 110 MaximumAlignment<value_type, MaxAlign>::value> Elf_Off; 111 }; 112 113 // I really don't like doing this, but the alternative is copypasta. 114 #define LLVM_ELF_IMPORT_TYPES(ELFT) \ 115 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Addr Elf_Addr; \ 116 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Off Elf_Off; \ 117 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Half Elf_Half; \ 118 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Word Elf_Word; \ 119 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Sword Elf_Sword; \ 120 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Xword Elf_Xword; \ 121 typedef typename ELFDataTypeTypedefHelper <ELFT>::Elf_Sxword Elf_Sxword; 122 123 // This is required to get template types into a macro :( 124 #define LLVM_ELF_COMMA , 125 126 // Section header. 127 template<class ELFT> 128 struct Elf_Shdr_Base; 129 130 template<template<endianness, std::size_t, bool> class ELFT, 131 endianness TargetEndianness, std::size_t MaxAlign> 132 struct Elf_Shdr_Base<ELFT<TargetEndianness, MaxAlign, false> > { 133 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA 134 MaxAlign LLVM_ELF_COMMA false>) 135 Elf_Word sh_name; // Section name (index into string table) 136 Elf_Word sh_type; // Section type (SHT_*) 137 Elf_Word sh_flags; // Section flags (SHF_*) 138 Elf_Addr sh_addr; // Address where section is to be loaded 139 Elf_Off sh_offset; // File offset of section data, in bytes 140 Elf_Word sh_size; // Size of section, in bytes 141 Elf_Word sh_link; // Section type-specific header table index link 142 Elf_Word sh_info; // Section type-specific extra information 143 Elf_Word sh_addralign;// Section address alignment 144 Elf_Word sh_entsize; // Size of records contained within the section 145 }; 146 147 template<template<endianness, std::size_t, bool> class ELFT, 148 endianness TargetEndianness, std::size_t MaxAlign> 149 struct Elf_Shdr_Base<ELFT<TargetEndianness, MaxAlign, true> > { 150 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA 151 MaxAlign LLVM_ELF_COMMA true>) 152 Elf_Word sh_name; // Section name (index into string table) 153 Elf_Word sh_type; // Section type (SHT_*) 154 Elf_Xword sh_flags; // Section flags (SHF_*) 155 Elf_Addr sh_addr; // Address where section is to be loaded 156 Elf_Off sh_offset; // File offset of section data, in bytes 157 Elf_Xword sh_size; // Size of section, in bytes 158 Elf_Word sh_link; // Section type-specific header table index link 159 Elf_Word sh_info; // Section type-specific extra information 160 Elf_Xword sh_addralign;// Section address alignment 161 Elf_Xword sh_entsize; // Size of records contained within the section 162 }; 163 164 template<class ELFT> 165 struct Elf_Shdr_Impl : Elf_Shdr_Base<ELFT> { 166 using Elf_Shdr_Base<ELFT>::sh_entsize; 167 using Elf_Shdr_Base<ELFT>::sh_size; 168 169 /// @brief Get the number of entities this section contains if it has any. 170 unsigned getEntityCount() const { 171 if (sh_entsize == 0) 172 return 0; 173 return sh_size / sh_entsize; 174 } 175 }; 176 177 template<class ELFT> 178 struct Elf_Sym_Base; 179 180 template<template<endianness, std::size_t, bool> class ELFT, 181 endianness TargetEndianness, std::size_t MaxAlign> 182 struct Elf_Sym_Base<ELFT<TargetEndianness, MaxAlign, false> > { 183 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA 184 MaxAlign LLVM_ELF_COMMA false>) 185 Elf_Word st_name; // Symbol name (index into string table) 186 Elf_Addr st_value; // Value or address associated with the symbol 187 Elf_Word st_size; // Size of the symbol 188 unsigned char st_info; // Symbol's type and binding attributes 189 unsigned char st_other; // Must be zero; reserved 190 Elf_Half st_shndx; // Which section (header table index) it's defined in 191 }; 192 193 template<template<endianness, std::size_t, bool> class ELFT, 194 endianness TargetEndianness, std::size_t MaxAlign> 195 struct Elf_Sym_Base<ELFT<TargetEndianness, MaxAlign, true> > { 196 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA 197 MaxAlign LLVM_ELF_COMMA true>) 198 Elf_Word st_name; // Symbol name (index into string table) 199 unsigned char st_info; // Symbol's type and binding attributes 200 unsigned char st_other; // Must be zero; reserved 201 Elf_Half st_shndx; // Which section (header table index) it's defined in 202 Elf_Addr st_value; // Value or address associated with the symbol 203 Elf_Xword st_size; // Size of the symbol 204 }; 205 206 template<class ELFT> 207 struct Elf_Sym_Impl : Elf_Sym_Base<ELFT> { 208 using Elf_Sym_Base<ELFT>::st_info; 209 210 // These accessors and mutators correspond to the ELF32_ST_BIND, 211 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification: 212 unsigned char getBinding() const { return st_info >> 4; } 213 unsigned char getType() const { return st_info & 0x0f; } 214 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 215 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 216 void setBindingAndType(unsigned char b, unsigned char t) { 217 st_info = (b << 4) + (t & 0x0f); 218 } 219 }; 220 221 /// Elf_Versym: This is the structure of entries in the SHT_GNU_versym section 222 /// (.gnu.version). This structure is identical for ELF32 and ELF64. 223 template<class ELFT> 224 struct Elf_Versym_Impl { 225 LLVM_ELF_IMPORT_TYPES(ELFT) 226 Elf_Half vs_index; // Version index with flags (e.g. VERSYM_HIDDEN) 227 }; 228 229 template<class ELFT> 230 struct Elf_Verdaux_Impl; 231 232 /// Elf_Verdef: This is the structure of entries in the SHT_GNU_verdef section 233 /// (.gnu.version_d). This structure is identical for ELF32 and ELF64. 234 template<class ELFT> 235 struct Elf_Verdef_Impl { 236 LLVM_ELF_IMPORT_TYPES(ELFT) 237 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux; 238 Elf_Half vd_version; // Version of this structure (e.g. VER_DEF_CURRENT) 239 Elf_Half vd_flags; // Bitwise flags (VER_DEF_*) 240 Elf_Half vd_ndx; // Version index, used in .gnu.version entries 241 Elf_Half vd_cnt; // Number of Verdaux entries 242 Elf_Word vd_hash; // Hash of name 243 Elf_Word vd_aux; // Offset to the first Verdaux entry (in bytes) 244 Elf_Word vd_next; // Offset to the next Verdef entry (in bytes) 245 246 /// Get the first Verdaux entry for this Verdef. 247 const Elf_Verdaux *getAux() const { 248 return reinterpret_cast<const Elf_Verdaux*>((const char*)this + vd_aux); 249 } 250 }; 251 252 /// Elf_Verdaux: This is the structure of auxiliary data in the SHT_GNU_verdef 253 /// section (.gnu.version_d). This structure is identical for ELF32 and ELF64. 254 template<class ELFT> 255 struct Elf_Verdaux_Impl { 256 LLVM_ELF_IMPORT_TYPES(ELFT) 257 Elf_Word vda_name; // Version name (offset in string table) 258 Elf_Word vda_next; // Offset to next Verdaux entry (in bytes) 259 }; 260 261 /// Elf_Verneed: This is the structure of entries in the SHT_GNU_verneed 262 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64. 263 template<class ELFT> 264 struct Elf_Verneed_Impl { 265 LLVM_ELF_IMPORT_TYPES(ELFT) 266 Elf_Half vn_version; // Version of this structure (e.g. VER_NEED_CURRENT) 267 Elf_Half vn_cnt; // Number of associated Vernaux entries 268 Elf_Word vn_file; // Library name (string table offset) 269 Elf_Word vn_aux; // Offset to first Vernaux entry (in bytes) 270 Elf_Word vn_next; // Offset to next Verneed entry (in bytes) 271 }; 272 273 /// Elf_Vernaux: This is the structure of auxiliary data in SHT_GNU_verneed 274 /// section (.gnu.version_r). This structure is identical for ELF32 and ELF64. 275 template<class ELFT> 276 struct Elf_Vernaux_Impl { 277 LLVM_ELF_IMPORT_TYPES(ELFT) 278 Elf_Word vna_hash; // Hash of dependency name 279 Elf_Half vna_flags; // Bitwise Flags (VER_FLAG_*) 280 Elf_Half vna_other; // Version index, used in .gnu.version entries 281 Elf_Word vna_name; // Dependency name 282 Elf_Word vna_next; // Offset to next Vernaux entry (in bytes) 283 }; 284 285 /// Elf_Dyn_Base: This structure matches the form of entries in the dynamic 286 /// table section (.dynamic) look like. 287 template<class ELFT> 288 struct Elf_Dyn_Base; 289 290 template<template<endianness, std::size_t, bool> class ELFT, 291 endianness TargetEndianness, std::size_t MaxAlign> 292 struct Elf_Dyn_Base<ELFT<TargetEndianness, MaxAlign, false> > { 293 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA 294 MaxAlign LLVM_ELF_COMMA false>) 295 Elf_Sword d_tag; 296 union { 297 Elf_Word d_val; 298 Elf_Addr d_ptr; 299 } d_un; 300 }; 301 302 template<template<endianness, std::size_t, bool> class ELFT, 303 endianness TargetEndianness, std::size_t MaxAlign> 304 struct Elf_Dyn_Base<ELFT<TargetEndianness, MaxAlign, true> > { 305 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA 306 MaxAlign LLVM_ELF_COMMA true>) 307 Elf_Sxword d_tag; 308 union { 309 Elf_Xword d_val; 310 Elf_Addr d_ptr; 311 } d_un; 312 }; 313 314 /// Elf_Dyn_Impl: This inherits from Elf_Dyn_Base, adding getters and setters. 315 template<class ELFT> 316 struct Elf_Dyn_Impl : Elf_Dyn_Base<ELFT> { 317 using Elf_Dyn_Base<ELFT>::d_tag; 318 using Elf_Dyn_Base<ELFT>::d_un; 319 int64_t getTag() const { return d_tag; } 320 uint64_t getVal() const { return d_un.d_val; } 321 uint64_t getPtr() const { return d_un.ptr; } 322 }; 323 324 // Elf_Rel: Elf Relocation 325 template<class ELFT, bool isRela> 326 struct Elf_Rel_Base; 327 328 template<template<endianness, std::size_t, bool> class ELFT, 329 endianness TargetEndianness, std::size_t MaxAlign> 330 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, false> { 331 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA 332 MaxAlign LLVM_ELF_COMMA false>) 333 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr) 334 Elf_Word r_info; // Symbol table index and type of relocation to apply 335 }; 336 337 template<template<endianness, std::size_t, bool> class ELFT, 338 endianness TargetEndianness, std::size_t MaxAlign> 339 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, false> { 340 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA 341 MaxAlign LLVM_ELF_COMMA true>) 342 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr) 343 Elf_Xword r_info; // Symbol table index and type of relocation to apply 344 }; 345 346 template<template<endianness, std::size_t, bool> class ELFT, 347 endianness TargetEndianness, std::size_t MaxAlign> 348 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, true> { 349 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA 350 MaxAlign LLVM_ELF_COMMA false>) 351 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr) 352 Elf_Word r_info; // Symbol table index and type of relocation to apply 353 Elf_Sword r_addend; // Compute value for relocatable field by adding this 354 }; 355 356 template<template<endianness, std::size_t, bool> class ELFT, 357 endianness TargetEndianness, std::size_t MaxAlign> 358 struct Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, true> { 359 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA 360 MaxAlign LLVM_ELF_COMMA true>) 361 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr) 362 Elf_Xword r_info; // Symbol table index and type of relocation to apply 363 Elf_Sxword r_addend; // Compute value for relocatable field by adding this. 364 }; 365 366 template<class ELFT, bool isRela> 367 struct Elf_Rel_Impl; 368 369 template<template<endianness, std::size_t, bool> class ELFT, 370 endianness TargetEndianness, std::size_t MaxAlign, bool isRela> 371 struct Elf_Rel_Impl<ELFT<TargetEndianness, MaxAlign, true>, isRela> 372 : Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, isRela> { 373 using Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, true>, isRela>::r_info; 374 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA 375 MaxAlign LLVM_ELF_COMMA true>) 376 377 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 378 // and ELF64_R_INFO macros defined in the ELF specification: 379 uint32_t getSymbol() const { return (uint32_t) (r_info >> 32); } 380 uint32_t getType() const { 381 return (uint32_t) (r_info & 0xffffffffL); 382 } 383 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); } 384 void setType(uint32_t t) { setSymbolAndType(getSymbol(), t); } 385 void setSymbolAndType(uint32_t s, uint32_t t) { 386 r_info = ((uint64_t)s << 32) + (t&0xffffffffL); 387 } 388 }; 389 390 template<template<endianness, std::size_t, bool> class ELFT, 391 endianness TargetEndianness, std::size_t MaxAlign, bool isRela> 392 struct Elf_Rel_Impl<ELFT<TargetEndianness, MaxAlign, false>, isRela> 393 : Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, isRela> { 394 using Elf_Rel_Base<ELFT<TargetEndianness, MaxAlign, false>, isRela>::r_info; 395 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA 396 MaxAlign LLVM_ELF_COMMA false>) 397 398 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 399 // and ELF32_R_INFO macros defined in the ELF specification: 400 uint32_t getSymbol() const { return (r_info >> 8); } 401 unsigned char getType() const { return (unsigned char) (r_info & 0x0ff); } 402 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); } 403 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 404 void setSymbolAndType(uint32_t s, unsigned char t) { 405 r_info = (s << 8) + t; 406 } 407 }; 408 409 template<class ELFT> 410 struct Elf_Ehdr_Impl { 411 LLVM_ELF_IMPORT_TYPES(ELFT) 412 unsigned char e_ident[ELF::EI_NIDENT]; // ELF Identification bytes 413 Elf_Half e_type; // Type of file (see ET_*) 414 Elf_Half e_machine; // Required architecture for this file (see EM_*) 415 Elf_Word e_version; // Must be equal to 1 416 Elf_Addr e_entry; // Address to jump to in order to start program 417 Elf_Off e_phoff; // Program header table's file offset, in bytes 418 Elf_Off e_shoff; // Section header table's file offset, in bytes 419 Elf_Word e_flags; // Processor-specific flags 420 Elf_Half e_ehsize; // Size of ELF header, in bytes 421 Elf_Half e_phentsize;// Size of an entry in the program header table 422 Elf_Half e_phnum; // Number of entries in the program header table 423 Elf_Half e_shentsize;// Size of an entry in the section header table 424 Elf_Half e_shnum; // Number of entries in the section header table 425 Elf_Half e_shstrndx; // Section header table index of section name 426 // string table 427 bool checkMagic() const { 428 return (memcmp(e_ident, ELF::ElfMagic, strlen(ELF::ElfMagic))) == 0; 429 } 430 unsigned char getFileClass() const { return e_ident[ELF::EI_CLASS]; } 431 unsigned char getDataEncoding() const { return e_ident[ELF::EI_DATA]; } 432 }; 433 434 template<class ELFT> 435 struct Elf_Phdr_Impl; 436 437 template<template<endianness, std::size_t, bool> class ELFT, 438 endianness TargetEndianness, std::size_t MaxAlign> 439 struct Elf_Phdr_Impl<ELFT<TargetEndianness, MaxAlign, false> > { 440 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA 441 MaxAlign LLVM_ELF_COMMA false>) 442 Elf_Word p_type; // Type of segment 443 Elf_Off p_offset; // FileOffset where segment is located, in bytes 444 Elf_Addr p_vaddr; // Virtual Address of beginning of segment 445 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 446 Elf_Word p_filesz; // Num. of bytes in file image of segment (may be zero) 447 Elf_Word p_memsz; // Num. of bytes in mem image of segment (may be zero) 448 Elf_Word p_flags; // Segment flags 449 Elf_Word p_align; // Segment alignment constraint 450 }; 451 452 template<template<endianness, std::size_t, bool> class ELFT, 453 endianness TargetEndianness, std::size_t MaxAlign> 454 struct Elf_Phdr_Impl<ELFT<TargetEndianness, MaxAlign, true> > { 455 LLVM_ELF_IMPORT_TYPES(ELFT<TargetEndianness LLVM_ELF_COMMA 456 MaxAlign LLVM_ELF_COMMA true>) 457 Elf_Word p_type; // Type of segment 458 Elf_Word p_flags; // Segment flags 459 Elf_Off p_offset; // FileOffset where segment is located, in bytes 460 Elf_Addr p_vaddr; // Virtual Address of beginning of segment 461 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 462 Elf_Xword p_filesz; // Num. of bytes in file image of segment (may be zero) 463 Elf_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero) 464 Elf_Xword p_align; // Segment alignment constraint 465 }; 466 467 template<class ELFT> 468 class ELFObjectFile : public ObjectFile { 469 LLVM_ELF_IMPORT_TYPES(ELFT) 470 471 public: 472 /// \brief Iterate over constant sized entities. 473 template<class EntT> 474 class ELFEntityIterator { 475 public: 476 typedef ptrdiff_t difference_type; 477 typedef EntT value_type; 478 typedef std::random_access_iterator_tag iterator_category; 479 typedef value_type &reference; 480 typedef value_type *pointer; 481 482 /// \brief Default construct iterator. 483 ELFEntityIterator() : EntitySize(0), Current(0) {} 484 ELFEntityIterator(uint64_t EntSize, const char *Start) 485 : EntitySize(EntSize) 486 , Current(Start) {} 487 488 reference operator *() { 489 assert(Current && "Attempted to dereference an invalid iterator!"); 490 return *reinterpret_cast<pointer>(Current); 491 } 492 493 pointer operator ->() { 494 assert(Current && "Attempted to dereference an invalid iterator!"); 495 return reinterpret_cast<pointer>(Current); 496 } 497 498 bool operator ==(const ELFEntityIterator &Other) { 499 return Current == Other.Current; 500 } 501 502 bool operator !=(const ELFEntityIterator &Other) { 503 return !(*this == Other); 504 } 505 506 ELFEntityIterator &operator ++() { 507 assert(Current && "Attempted to increment an invalid iterator!"); 508 Current += EntitySize; 509 return *this; 510 } 511 512 ELFEntityIterator operator ++(int) { 513 ELFEntityIterator Tmp = *this; 514 ++*this; 515 return Tmp; 516 } 517 518 ELFEntityIterator &operator =(const ELFEntityIterator &Other) { 519 EntitySize = Other.EntitySize; 520 Current = Other.Current; 521 return *this; 522 } 523 524 difference_type operator -(const ELFEntityIterator &Other) const { 525 assert(EntitySize == Other.EntitySize && 526 "Subtracting iterators of different EntitiySize!"); 527 return (Current - Other.Current) / EntitySize; 528 } 529 530 const char *get() const { return Current; } 531 532 private: 533 uint64_t EntitySize; 534 const char *Current; 535 }; 536 537 typedef Elf_Ehdr_Impl<ELFT> Elf_Ehdr; 538 typedef Elf_Shdr_Impl<ELFT> Elf_Shdr; 539 typedef Elf_Sym_Impl<ELFT> Elf_Sym; 540 typedef Elf_Dyn_Impl<ELFT> Elf_Dyn; 541 typedef Elf_Phdr_Impl<ELFT> Elf_Phdr; 542 typedef Elf_Rel_Impl<ELFT, false> Elf_Rel; 543 typedef Elf_Rel_Impl<ELFT, true> Elf_Rela; 544 typedef Elf_Verdef_Impl<ELFT> Elf_Verdef; 545 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux; 546 typedef Elf_Verneed_Impl<ELFT> Elf_Verneed; 547 typedef Elf_Vernaux_Impl<ELFT> Elf_Vernaux; 548 typedef Elf_Versym_Impl<ELFT> Elf_Versym; 549 typedef ELFEntityIterator<const Elf_Dyn> Elf_Dyn_iterator; 550 typedef ELFEntityIterator<const Elf_Sym> Elf_Sym_iterator; 551 typedef ELFEntityIterator<const Elf_Rela> Elf_Rela_Iter; 552 typedef ELFEntityIterator<const Elf_Rel> Elf_Rel_Iter; 553 554 protected: 555 // This flag is used for classof, to distinguish ELFObjectFile from 556 // its subclass. If more subclasses will be created, this flag will 557 // have to become an enum. 558 bool isDyldELFObject; 559 560 private: 561 typedef SmallVector<const Elf_Shdr *, 2> Sections_t; 562 typedef DenseMap<unsigned, unsigned> IndexMap_t; 563 typedef DenseMap<const Elf_Shdr*, SmallVector<uint32_t, 1> > RelocMap_t; 564 565 const Elf_Ehdr *Header; 566 const Elf_Shdr *SectionHeaderTable; 567 const Elf_Shdr *dot_shstrtab_sec; // Section header string table. 568 const Elf_Shdr *dot_strtab_sec; // Symbol header string table. 569 const Elf_Shdr *dot_dynstr_sec; // Dynamic symbol string table. 570 571 // SymbolTableSections[0] always points to the dynamic string table section 572 // header, or NULL if there is no dynamic string table. 573 Sections_t SymbolTableSections; 574 IndexMap_t SymbolTableSectionsIndexMap; 575 DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable; 576 577 const Elf_Shdr *dot_dynamic_sec; // .dynamic 578 const Elf_Shdr *dot_gnu_version_sec; // .gnu.version 579 const Elf_Shdr *dot_gnu_version_r_sec; // .gnu.version_r 580 const Elf_Shdr *dot_gnu_version_d_sec; // .gnu.version_d 581 582 // Pointer to SONAME entry in dynamic string table 583 // This is set the first time getLoadName is called. 584 mutable const char *dt_soname; 585 586 private: 587 // Records for each version index the corresponding Verdef or Vernaux entry. 588 // This is filled the first time LoadVersionMap() is called. 589 class VersionMapEntry : public PointerIntPair<const void*, 1> { 590 public: 591 // If the integer is 0, this is an Elf_Verdef*. 592 // If the integer is 1, this is an Elf_Vernaux*. 593 VersionMapEntry() : PointerIntPair<const void*, 1>(NULL, 0) { } 594 VersionMapEntry(const Elf_Verdef *verdef) 595 : PointerIntPair<const void*, 1>(verdef, 0) { } 596 VersionMapEntry(const Elf_Vernaux *vernaux) 597 : PointerIntPair<const void*, 1>(vernaux, 1) { } 598 bool isNull() const { return getPointer() == NULL; } 599 bool isVerdef() const { return !isNull() && getInt() == 0; } 600 bool isVernaux() const { return !isNull() && getInt() == 1; } 601 const Elf_Verdef *getVerdef() const { 602 return isVerdef() ? (const Elf_Verdef*)getPointer() : NULL; 603 } 604 const Elf_Vernaux *getVernaux() const { 605 return isVernaux() ? (const Elf_Vernaux*)getPointer() : NULL; 606 } 607 }; 608 mutable SmallVector<VersionMapEntry, 16> VersionMap; 609 void LoadVersionDefs(const Elf_Shdr *sec) const; 610 void LoadVersionNeeds(const Elf_Shdr *ec) const; 611 void LoadVersionMap() const; 612 613 /// @brief Map sections to an array of relocation sections that reference 614 /// them sorted by section index. 615 RelocMap_t SectionRelocMap; 616 617 /// @brief Get the relocation section that contains \a Rel. 618 const Elf_Shdr *getRelSection(DataRefImpl Rel) const { 619 return getSection(Rel.w.b); 620 } 621 622 public: 623 bool isRelocationHasAddend(DataRefImpl Rel) const; 624 template<typename T> 625 const T *getEntry(uint16_t Section, uint32_t Entry) const; 626 template<typename T> 627 const T *getEntry(const Elf_Shdr *Section, uint32_t Entry) const; 628 const Elf_Shdr *getSection(DataRefImpl index) const; 629 const Elf_Shdr *getSection(uint32_t index) const; 630 const Elf_Rel *getRel(DataRefImpl Rel) const; 631 const Elf_Rela *getRela(DataRefImpl Rela) const; 632 const char *getString(uint32_t section, uint32_t offset) const; 633 const char *getString(const Elf_Shdr *section, uint32_t offset) const; 634 error_code getSymbolVersion(const Elf_Shdr *section, 635 const Elf_Sym *Symb, 636 StringRef &Version, 637 bool &IsDefault) const; 638 void VerifyStrTab(const Elf_Shdr *sh) const; 639 640 protected: 641 const Elf_Sym *getSymbol(DataRefImpl Symb) const; // FIXME: Should be private? 642 void validateSymbol(DataRefImpl Symb) const; 643 644 public: 645 error_code getSymbolName(const Elf_Shdr *section, 646 const Elf_Sym *Symb, 647 StringRef &Res) const; 648 error_code getSectionName(const Elf_Shdr *section, 649 StringRef &Res) const; 650 const Elf_Dyn *getDyn(DataRefImpl DynData) const; 651 error_code getSymbolVersion(SymbolRef Symb, StringRef &Version, 652 bool &IsDefault) const; 653 uint64_t getSymbolIndex(const Elf_Sym *sym) const; 654 protected: 655 virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const; 656 virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const; 657 virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const; 658 virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const; 659 virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const; 660 virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const; 661 virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const; 662 virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const; 663 virtual error_code getSymbolSection(DataRefImpl Symb, 664 section_iterator &Res) const; 665 virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const; 666 667 virtual error_code getLibraryNext(DataRefImpl Data, LibraryRef &Result) const; 668 virtual error_code getLibraryPath(DataRefImpl Data, StringRef &Res) const; 669 670 virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const; 671 virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const; 672 virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const; 673 virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const; 674 virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const; 675 virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const; 676 virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const; 677 virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const; 678 virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const; 679 virtual error_code isSectionRequiredForExecution(DataRefImpl Sec, 680 bool &Res) const; 681 virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const; 682 virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const; 683 virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const; 684 virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb, 685 bool &Result) const; 686 virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const; 687 virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const; 688 689 virtual error_code getRelocationNext(DataRefImpl Rel, 690 RelocationRef &Res) const; 691 virtual error_code getRelocationAddress(DataRefImpl Rel, 692 uint64_t &Res) const; 693 virtual error_code getRelocationOffset(DataRefImpl Rel, 694 uint64_t &Res) const; 695 virtual error_code getRelocationSymbol(DataRefImpl Rel, 696 SymbolRef &Res) const; 697 virtual error_code getRelocationType(DataRefImpl Rel, 698 uint64_t &Res) const; 699 virtual error_code getRelocationTypeName(DataRefImpl Rel, 700 SmallVectorImpl<char> &Result) const; 701 virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel, 702 int64_t &Res) const; 703 virtual error_code getRelocationValueString(DataRefImpl Rel, 704 SmallVectorImpl<char> &Result) const; 705 706 public: 707 ELFObjectFile(MemoryBuffer *Object, error_code &ec); 708 virtual symbol_iterator begin_symbols() const; 709 virtual symbol_iterator end_symbols() const; 710 711 virtual symbol_iterator begin_dynamic_symbols() const; 712 virtual symbol_iterator end_dynamic_symbols() const; 713 714 virtual section_iterator begin_sections() const; 715 virtual section_iterator end_sections() const; 716 717 virtual library_iterator begin_libraries_needed() const; 718 virtual library_iterator end_libraries_needed() const; 719 720 const Elf_Shdr *getDynamicSymbolTableSectionHeader() const { 721 return SymbolTableSections[0]; 722 } 723 724 const Elf_Shdr *getDynamicStringTableSectionHeader() const { 725 return dot_dynstr_sec; 726 } 727 728 Elf_Dyn_iterator begin_dynamic_table() const; 729 /// \param NULLEnd use one past the first DT_NULL entry as the end instead of 730 /// the section size. 731 Elf_Dyn_iterator end_dynamic_table(bool NULLEnd = false) const; 732 733 Elf_Sym_iterator begin_elf_dynamic_symbols() const { 734 const Elf_Shdr *DynSymtab = SymbolTableSections[0]; 735 if (DynSymtab) 736 return Elf_Sym_iterator(DynSymtab->sh_entsize, 737 (const char *)base() + DynSymtab->sh_offset); 738 return Elf_Sym_iterator(0, 0); 739 } 740 741 Elf_Sym_iterator end_elf_dynamic_symbols() const { 742 const Elf_Shdr *DynSymtab = SymbolTableSections[0]; 743 if (DynSymtab) 744 return Elf_Sym_iterator(DynSymtab->sh_entsize, (const char *)base() + 745 DynSymtab->sh_offset + DynSymtab->sh_size); 746 return Elf_Sym_iterator(0, 0); 747 } 748 749 Elf_Rela_Iter beginELFRela(const Elf_Shdr *sec) const { 750 return Elf_Rela_Iter(sec->sh_entsize, 751 (const char *)(base() + sec->sh_offset)); 752 } 753 754 Elf_Rela_Iter endELFRela(const Elf_Shdr *sec) const { 755 return Elf_Rela_Iter(sec->sh_entsize, (const char *) 756 (base() + sec->sh_offset + sec->sh_size)); 757 } 758 759 Elf_Rel_Iter beginELFRel(const Elf_Shdr *sec) const { 760 return Elf_Rel_Iter(sec->sh_entsize, 761 (const char *)(base() + sec->sh_offset)); 762 } 763 764 Elf_Rel_Iter endELFRel(const Elf_Shdr *sec) const { 765 return Elf_Rel_Iter(sec->sh_entsize, (const char *) 766 (base() + sec->sh_offset + sec->sh_size)); 767 } 768 769 /// \brief Iterate over program header table. 770 typedef ELFEntityIterator<const Elf_Phdr> Elf_Phdr_Iter; 771 772 Elf_Phdr_Iter begin_program_headers() const { 773 return Elf_Phdr_Iter(Header->e_phentsize, 774 (const char*)base() + Header->e_phoff); 775 } 776 777 Elf_Phdr_Iter end_program_headers() const { 778 return Elf_Phdr_Iter(Header->e_phentsize, 779 (const char*)base() + 780 Header->e_phoff + 781 (Header->e_phnum * Header->e_phentsize)); 782 } 783 784 virtual uint8_t getBytesInAddress() const; 785 virtual StringRef getFileFormatName() const; 786 virtual StringRef getObjectType() const { return "ELF"; } 787 virtual unsigned getArch() const; 788 virtual StringRef getLoadName() const; 789 virtual error_code getSectionContents(const Elf_Shdr *sec, 790 StringRef &Res) const; 791 792 uint64_t getNumSections() const; 793 uint64_t getStringTableIndex() const; 794 ELF::Elf64_Word getSymbolTableIndex(const Elf_Sym *symb) const; 795 const Elf_Shdr *getSection(const Elf_Sym *symb) const; 796 const Elf_Shdr *getElfSection(section_iterator &It) const; 797 const Elf_Sym *getElfSymbol(symbol_iterator &It) const; 798 const Elf_Sym *getElfSymbol(uint32_t index) const; 799 800 // Methods for type inquiry through isa, cast, and dyn_cast 801 bool isDyldType() const { return isDyldELFObject; } 802 static inline bool classof(const Binary *v) { 803 return v->getType() == getELFType(ELFT::TargetEndianness == support::little, 804 ELFT::Is64Bits); 805 } 806 }; 807 808 // Iterate through the version definitions, and place each Elf_Verdef 809 // in the VersionMap according to its index. 810 template<class ELFT> 811 void ELFObjectFile<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const { 812 unsigned vd_size = sec->sh_size; // Size of section in bytes 813 unsigned vd_count = sec->sh_info; // Number of Verdef entries 814 const char *sec_start = (const char*)base() + sec->sh_offset; 815 const char *sec_end = sec_start + vd_size; 816 // The first Verdef entry is at the start of the section. 817 const char *p = sec_start; 818 for (unsigned i = 0; i < vd_count; i++) { 819 if (p + sizeof(Elf_Verdef) > sec_end) 820 report_fatal_error("Section ended unexpectedly while scanning " 821 "version definitions."); 822 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p); 823 if (vd->vd_version != ELF::VER_DEF_CURRENT) 824 report_fatal_error("Unexpected verdef version"); 825 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION; 826 if (index >= VersionMap.size()) 827 VersionMap.resize(index+1); 828 VersionMap[index] = VersionMapEntry(vd); 829 p += vd->vd_next; 830 } 831 } 832 833 // Iterate through the versions needed section, and place each Elf_Vernaux 834 // in the VersionMap according to its index. 835 template<class ELFT> 836 void ELFObjectFile<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const { 837 unsigned vn_size = sec->sh_size; // Size of section in bytes 838 unsigned vn_count = sec->sh_info; // Number of Verneed entries 839 const char *sec_start = (const char*)base() + sec->sh_offset; 840 const char *sec_end = sec_start + vn_size; 841 // The first Verneed entry is at the start of the section. 842 const char *p = sec_start; 843 for (unsigned i = 0; i < vn_count; i++) { 844 if (p + sizeof(Elf_Verneed) > sec_end) 845 report_fatal_error("Section ended unexpectedly while scanning " 846 "version needed records."); 847 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p); 848 if (vn->vn_version != ELF::VER_NEED_CURRENT) 849 report_fatal_error("Unexpected verneed version"); 850 // Iterate through the Vernaux entries 851 const char *paux = p + vn->vn_aux; 852 for (unsigned j = 0; j < vn->vn_cnt; j++) { 853 if (paux + sizeof(Elf_Vernaux) > sec_end) 854 report_fatal_error("Section ended unexpected while scanning auxiliary " 855 "version needed records."); 856 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux); 857 size_t index = vna->vna_other & ELF::VERSYM_VERSION; 858 if (index >= VersionMap.size()) 859 VersionMap.resize(index+1); 860 VersionMap[index] = VersionMapEntry(vna); 861 paux += vna->vna_next; 862 } 863 p += vn->vn_next; 864 } 865 } 866 867 template<class ELFT> 868 void ELFObjectFile<ELFT>::LoadVersionMap() const { 869 // If there is no dynamic symtab or version table, there is nothing to do. 870 if (SymbolTableSections[0] == NULL || dot_gnu_version_sec == NULL) 871 return; 872 873 // Has the VersionMap already been loaded? 874 if (VersionMap.size() > 0) 875 return; 876 877 // The first two version indexes are reserved. 878 // Index 0 is LOCAL, index 1 is GLOBAL. 879 VersionMap.push_back(VersionMapEntry()); 880 VersionMap.push_back(VersionMapEntry()); 881 882 if (dot_gnu_version_d_sec) 883 LoadVersionDefs(dot_gnu_version_d_sec); 884 885 if (dot_gnu_version_r_sec) 886 LoadVersionNeeds(dot_gnu_version_r_sec); 887 } 888 889 template<class ELFT> 890 void ELFObjectFile<ELFT>::validateSymbol(DataRefImpl Symb) const { 891 #ifndef NDEBUG 892 const Elf_Sym *symb = getSymbol(Symb); 893 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b]; 894 // FIXME: We really need to do proper error handling in the case of an invalid 895 // input file. Because we don't use exceptions, I think we'll just pass 896 // an error object around. 897 if (!( symb 898 && SymbolTableSection 899 && symb >= (const Elf_Sym*)(base() 900 + SymbolTableSection->sh_offset) 901 && symb < (const Elf_Sym*)(base() 902 + SymbolTableSection->sh_offset 903 + SymbolTableSection->sh_size))) 904 // FIXME: Proper error handling. 905 report_fatal_error("Symb must point to a valid symbol!"); 906 #endif 907 } 908 909 template<class ELFT> 910 error_code ELFObjectFile<ELFT>::getSymbolNext(DataRefImpl Symb, 911 SymbolRef &Result) const { 912 validateSymbol(Symb); 913 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b]; 914 915 ++Symb.d.a; 916 // Check to see if we are at the end of this symbol table. 917 if (Symb.d.a >= SymbolTableSection->getEntityCount()) { 918 // We are at the end. If there are other symbol tables, jump to them. 919 // If the symbol table is .dynsym, we are iterating dynamic symbols, 920 // and there is only one table of these. 921 if (Symb.d.b != 0) { 922 ++Symb.d.b; 923 Symb.d.a = 1; // The 0th symbol in ELF is fake. 924 } 925 // Otherwise return the terminator. 926 if (Symb.d.b == 0 || Symb.d.b >= SymbolTableSections.size()) { 927 Symb.d.a = std::numeric_limits<uint32_t>::max(); 928 Symb.d.b = std::numeric_limits<uint32_t>::max(); 929 } 930 } 931 932 Result = SymbolRef(Symb, this); 933 return object_error::success; 934 } 935 936 template<class ELFT> 937 error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb, 938 StringRef &Result) const { 939 validateSymbol(Symb); 940 const Elf_Sym *symb = getSymbol(Symb); 941 return getSymbolName(SymbolTableSections[Symb.d.b], symb, Result); 942 } 943 944 template<class ELFT> 945 error_code ELFObjectFile<ELFT>::getSymbolVersion(SymbolRef SymRef, 946 StringRef &Version, 947 bool &IsDefault) const { 948 DataRefImpl Symb = SymRef.getRawDataRefImpl(); 949 validateSymbol(Symb); 950 const Elf_Sym *symb = getSymbol(Symb); 951 return getSymbolVersion(SymbolTableSections[Symb.d.b], symb, 952 Version, IsDefault); 953 } 954 955 template<class ELFT> 956 ELF::Elf64_Word ELFObjectFile<ELFT> 957 ::getSymbolTableIndex(const Elf_Sym *symb) const { 958 if (symb->st_shndx == ELF::SHN_XINDEX) 959 return ExtendedSymbolTable.lookup(symb); 960 return symb->st_shndx; 961 } 962 963 template<class ELFT> 964 const typename ELFObjectFile<ELFT>::Elf_Shdr * 965 ELFObjectFile<ELFT>::getSection(const Elf_Sym *symb) const { 966 if (symb->st_shndx == ELF::SHN_XINDEX) 967 return getSection(ExtendedSymbolTable.lookup(symb)); 968 if (symb->st_shndx >= ELF::SHN_LORESERVE) 969 return 0; 970 return getSection(symb->st_shndx); 971 } 972 973 template<class ELFT> 974 const typename ELFObjectFile<ELFT>::Elf_Shdr * 975 ELFObjectFile<ELFT>::getElfSection(section_iterator &It) const { 976 llvm::object::DataRefImpl ShdrRef = It->getRawDataRefImpl(); 977 return reinterpret_cast<const Elf_Shdr *>(ShdrRef.p); 978 } 979 980 template<class ELFT> 981 const typename ELFObjectFile<ELFT>::Elf_Sym * 982 ELFObjectFile<ELFT>::getElfSymbol(symbol_iterator &It) const { 983 return getSymbol(It->getRawDataRefImpl()); 984 } 985 986 template<class ELFT> 987 const typename ELFObjectFile<ELFT>::Elf_Sym * 988 ELFObjectFile<ELFT>::getElfSymbol(uint32_t index) const { 989 DataRefImpl SymbolData; 990 SymbolData.d.a = index; 991 SymbolData.d.b = 1; 992 return getSymbol(SymbolData); 993 } 994 995 template<class ELFT> 996 error_code ELFObjectFile<ELFT>::getSymbolFileOffset(DataRefImpl Symb, 997 uint64_t &Result) const { 998 validateSymbol(Symb); 999 const Elf_Sym *symb = getSymbol(Symb); 1000 const Elf_Shdr *Section; 1001 switch (getSymbolTableIndex(symb)) { 1002 case ELF::SHN_COMMON: 1003 // Unintialized symbols have no offset in the object file 1004 case ELF::SHN_UNDEF: 1005 Result = UnknownAddressOrSize; 1006 return object_error::success; 1007 case ELF::SHN_ABS: 1008 Result = symb->st_value; 1009 return object_error::success; 1010 default: Section = getSection(symb); 1011 } 1012 1013 switch (symb->getType()) { 1014 case ELF::STT_SECTION: 1015 Result = Section ? Section->sh_offset : UnknownAddressOrSize; 1016 return object_error::success; 1017 case ELF::STT_FUNC: 1018 case ELF::STT_OBJECT: 1019 case ELF::STT_NOTYPE: 1020 Result = symb->st_value + 1021 (Section ? Section->sh_offset : 0); 1022 return object_error::success; 1023 default: 1024 Result = UnknownAddressOrSize; 1025 return object_error::success; 1026 } 1027 } 1028 1029 template<class ELFT> 1030 error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb, 1031 uint64_t &Result) const { 1032 validateSymbol(Symb); 1033 const Elf_Sym *symb = getSymbol(Symb); 1034 const Elf_Shdr *Section; 1035 switch (getSymbolTableIndex(symb)) { 1036 case ELF::SHN_COMMON: 1037 case ELF::SHN_UNDEF: 1038 Result = UnknownAddressOrSize; 1039 return object_error::success; 1040 case ELF::SHN_ABS: 1041 Result = symb->st_value; 1042 return object_error::success; 1043 default: Section = getSection(symb); 1044 } 1045 1046 switch (symb->getType()) { 1047 case ELF::STT_SECTION: 1048 Result = Section ? Section->sh_addr : UnknownAddressOrSize; 1049 return object_error::success; 1050 case ELF::STT_FUNC: 1051 case ELF::STT_OBJECT: 1052 case ELF::STT_NOTYPE: 1053 bool IsRelocatable; 1054 switch(Header->e_type) { 1055 case ELF::ET_EXEC: 1056 case ELF::ET_DYN: 1057 IsRelocatable = false; 1058 break; 1059 default: 1060 IsRelocatable = true; 1061 } 1062 Result = symb->st_value; 1063 if (IsRelocatable && Section != 0) 1064 Result += Section->sh_addr; 1065 return object_error::success; 1066 default: 1067 Result = UnknownAddressOrSize; 1068 return object_error::success; 1069 } 1070 } 1071 1072 template<class ELFT> 1073 error_code ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Symb, 1074 uint64_t &Result) const { 1075 validateSymbol(Symb); 1076 const Elf_Sym *symb = getSymbol(Symb); 1077 if (symb->st_size == 0) 1078 Result = UnknownAddressOrSize; 1079 Result = symb->st_size; 1080 return object_error::success; 1081 } 1082 1083 template<class ELFT> 1084 error_code ELFObjectFile<ELFT>::getSymbolNMTypeChar(DataRefImpl Symb, 1085 char &Result) const { 1086 validateSymbol(Symb); 1087 const Elf_Sym *symb = getSymbol(Symb); 1088 const Elf_Shdr *Section = getSection(symb); 1089 1090 char ret = '?'; 1091 1092 if (Section) { 1093 switch (Section->sh_type) { 1094 case ELF::SHT_PROGBITS: 1095 case ELF::SHT_DYNAMIC: 1096 switch (Section->sh_flags) { 1097 case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR): 1098 ret = 't'; break; 1099 case (ELF::SHF_ALLOC | ELF::SHF_WRITE): 1100 ret = 'd'; break; 1101 case ELF::SHF_ALLOC: 1102 case (ELF::SHF_ALLOC | ELF::SHF_MERGE): 1103 case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS): 1104 ret = 'r'; break; 1105 } 1106 break; 1107 case ELF::SHT_NOBITS: ret = 'b'; 1108 } 1109 } 1110 1111 switch (getSymbolTableIndex(symb)) { 1112 case ELF::SHN_UNDEF: 1113 if (ret == '?') 1114 ret = 'U'; 1115 break; 1116 case ELF::SHN_ABS: ret = 'a'; break; 1117 case ELF::SHN_COMMON: ret = 'c'; break; 1118 } 1119 1120 switch (symb->getBinding()) { 1121 case ELF::STB_GLOBAL: ret = ::toupper(ret); break; 1122 case ELF::STB_WEAK: 1123 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF) 1124 ret = 'w'; 1125 else 1126 if (symb->getType() == ELF::STT_OBJECT) 1127 ret = 'V'; 1128 else 1129 ret = 'W'; 1130 } 1131 1132 if (ret == '?' && symb->getType() == ELF::STT_SECTION) { 1133 StringRef name; 1134 if (error_code ec = getSymbolName(Symb, name)) 1135 return ec; 1136 Result = StringSwitch<char>(name) 1137 .StartsWith(".debug", 'N') 1138 .StartsWith(".note", 'n') 1139 .Default('?'); 1140 return object_error::success; 1141 } 1142 1143 Result = ret; 1144 return object_error::success; 1145 } 1146 1147 template<class ELFT> 1148 error_code ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb, 1149 SymbolRef::Type &Result) const { 1150 validateSymbol(Symb); 1151 const Elf_Sym *symb = getSymbol(Symb); 1152 1153 switch (symb->getType()) { 1154 case ELF::STT_NOTYPE: 1155 Result = SymbolRef::ST_Unknown; 1156 break; 1157 case ELF::STT_SECTION: 1158 Result = SymbolRef::ST_Debug; 1159 break; 1160 case ELF::STT_FILE: 1161 Result = SymbolRef::ST_File; 1162 break; 1163 case ELF::STT_FUNC: 1164 Result = SymbolRef::ST_Function; 1165 break; 1166 case ELF::STT_OBJECT: 1167 case ELF::STT_COMMON: 1168 case ELF::STT_TLS: 1169 Result = SymbolRef::ST_Data; 1170 break; 1171 default: 1172 Result = SymbolRef::ST_Other; 1173 break; 1174 } 1175 return object_error::success; 1176 } 1177 1178 template<class ELFT> 1179 error_code ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb, 1180 uint32_t &Result) const { 1181 validateSymbol(Symb); 1182 const Elf_Sym *symb = getSymbol(Symb); 1183 1184 Result = SymbolRef::SF_None; 1185 1186 if (symb->getBinding() != ELF::STB_LOCAL) 1187 Result |= SymbolRef::SF_Global; 1188 1189 if (symb->getBinding() == ELF::STB_WEAK) 1190 Result |= SymbolRef::SF_Weak; 1191 1192 if (symb->st_shndx == ELF::SHN_ABS) 1193 Result |= SymbolRef::SF_Absolute; 1194 1195 if (symb->getType() == ELF::STT_FILE || 1196 symb->getType() == ELF::STT_SECTION) 1197 Result |= SymbolRef::SF_FormatSpecific; 1198 1199 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF) 1200 Result |= SymbolRef::SF_Undefined; 1201 1202 if (symb->getType() == ELF::STT_COMMON || 1203 getSymbolTableIndex(symb) == ELF::SHN_COMMON) 1204 Result |= SymbolRef::SF_Common; 1205 1206 if (symb->getType() == ELF::STT_TLS) 1207 Result |= SymbolRef::SF_ThreadLocal; 1208 1209 return object_error::success; 1210 } 1211 1212 template<class ELFT> 1213 error_code ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb, 1214 section_iterator &Res) const { 1215 validateSymbol(Symb); 1216 const Elf_Sym *symb = getSymbol(Symb); 1217 const Elf_Shdr *sec = getSection(symb); 1218 if (!sec) 1219 Res = end_sections(); 1220 else { 1221 DataRefImpl Sec; 1222 Sec.p = reinterpret_cast<intptr_t>(sec); 1223 Res = section_iterator(SectionRef(Sec, this)); 1224 } 1225 return object_error::success; 1226 } 1227 1228 template<class ELFT> 1229 error_code ELFObjectFile<ELFT>::getSymbolValue(DataRefImpl Symb, 1230 uint64_t &Val) const { 1231 validateSymbol(Symb); 1232 const Elf_Sym *symb = getSymbol(Symb); 1233 Val = symb->st_value; 1234 return object_error::success; 1235 } 1236 1237 template<class ELFT> 1238 error_code ELFObjectFile<ELFT>::getSectionNext(DataRefImpl Sec, 1239 SectionRef &Result) const { 1240 const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p); 1241 sec += Header->e_shentsize; 1242 Sec.p = reinterpret_cast<intptr_t>(sec); 1243 Result = SectionRef(Sec, this); 1244 return object_error::success; 1245 } 1246 1247 template<class ELFT> 1248 error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec, 1249 StringRef &Result) const { 1250 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1251 Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name)); 1252 return object_error::success; 1253 } 1254 1255 template<class ELFT> 1256 error_code ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec, 1257 uint64_t &Result) const { 1258 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1259 Result = sec->sh_addr; 1260 return object_error::success; 1261 } 1262 1263 template<class ELFT> 1264 error_code ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec, 1265 uint64_t &Result) const { 1266 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1267 Result = sec->sh_size; 1268 return object_error::success; 1269 } 1270 1271 template<class ELFT> 1272 error_code ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec, 1273 StringRef &Result) const { 1274 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1275 const char *start = (const char*)base() + sec->sh_offset; 1276 Result = StringRef(start, sec->sh_size); 1277 return object_error::success; 1278 } 1279 1280 template<class ELFT> 1281 error_code ELFObjectFile<ELFT>::getSectionContents(const Elf_Shdr *Sec, 1282 StringRef &Result) const { 1283 const char *start = (const char*)base() + Sec->sh_offset; 1284 Result = StringRef(start, Sec->sh_size); 1285 return object_error::success; 1286 } 1287 1288 template<class ELFT> 1289 error_code ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec, 1290 uint64_t &Result) const { 1291 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1292 Result = sec->sh_addralign; 1293 return object_error::success; 1294 } 1295 1296 template<class ELFT> 1297 error_code ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec, 1298 bool &Result) const { 1299 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1300 if (sec->sh_flags & ELF::SHF_EXECINSTR) 1301 Result = true; 1302 else 1303 Result = false; 1304 return object_error::success; 1305 } 1306 1307 template<class ELFT> 1308 error_code ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec, 1309 bool &Result) const { 1310 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1311 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE) 1312 && sec->sh_type == ELF::SHT_PROGBITS) 1313 Result = true; 1314 else 1315 Result = false; 1316 return object_error::success; 1317 } 1318 1319 template<class ELFT> 1320 error_code ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec, 1321 bool &Result) const { 1322 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1323 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE) 1324 && sec->sh_type == ELF::SHT_NOBITS) 1325 Result = true; 1326 else 1327 Result = false; 1328 return object_error::success; 1329 } 1330 1331 template<class ELFT> 1332 error_code ELFObjectFile<ELFT>::isSectionRequiredForExecution( 1333 DataRefImpl Sec, bool &Result) const { 1334 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1335 if (sec->sh_flags & ELF::SHF_ALLOC) 1336 Result = true; 1337 else 1338 Result = false; 1339 return object_error::success; 1340 } 1341 1342 template<class ELFT> 1343 error_code ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec, 1344 bool &Result) const { 1345 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1346 if (sec->sh_type == ELF::SHT_NOBITS) 1347 Result = true; 1348 else 1349 Result = false; 1350 return object_error::success; 1351 } 1352 1353 template<class ELFT> 1354 error_code ELFObjectFile<ELFT>::isSectionZeroInit(DataRefImpl Sec, 1355 bool &Result) const { 1356 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1357 // For ELF, all zero-init sections are virtual (that is, they occupy no space 1358 // in the object image) and vice versa. 1359 Result = sec->sh_type == ELF::SHT_NOBITS; 1360 return object_error::success; 1361 } 1362 1363 template<class ELFT> 1364 error_code ELFObjectFile<ELFT>::isSectionReadOnlyData(DataRefImpl Sec, 1365 bool &Result) const { 1366 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1367 if (sec->sh_flags & ELF::SHF_WRITE || sec->sh_flags & ELF::SHF_EXECINSTR) 1368 Result = false; 1369 else 1370 Result = true; 1371 return object_error::success; 1372 } 1373 1374 template<class ELFT> 1375 error_code ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec, 1376 DataRefImpl Symb, 1377 bool &Result) const { 1378 // FIXME: Unimplemented. 1379 Result = false; 1380 return object_error::success; 1381 } 1382 1383 template<class ELFT> 1384 relocation_iterator 1385 ELFObjectFile<ELFT>::getSectionRelBegin(DataRefImpl Sec) const { 1386 DataRefImpl RelData; 1387 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1388 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec); 1389 if (sec != 0 && ittr != SectionRelocMap.end()) { 1390 RelData.w.a = getSection(ittr->second[0])->sh_info; 1391 RelData.w.b = ittr->second[0]; 1392 RelData.w.c = 0; 1393 } 1394 return relocation_iterator(RelocationRef(RelData, this)); 1395 } 1396 1397 template<class ELFT> 1398 relocation_iterator 1399 ELFObjectFile<ELFT>::getSectionRelEnd(DataRefImpl Sec) const { 1400 DataRefImpl RelData; 1401 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1402 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec); 1403 if (sec != 0 && ittr != SectionRelocMap.end()) { 1404 // Get the index of the last relocation section for this section. 1405 std::size_t relocsecindex = ittr->second[ittr->second.size() - 1]; 1406 const Elf_Shdr *relocsec = getSection(relocsecindex); 1407 RelData.w.a = relocsec->sh_info; 1408 RelData.w.b = relocsecindex; 1409 RelData.w.c = relocsec->sh_size / relocsec->sh_entsize; 1410 } 1411 return relocation_iterator(RelocationRef(RelData, this)); 1412 } 1413 1414 // Relocations 1415 template<class ELFT> 1416 error_code ELFObjectFile<ELFT>::getRelocationNext(DataRefImpl Rel, 1417 RelocationRef &Result) const { 1418 ++Rel.w.c; 1419 const Elf_Shdr *relocsec = getSection(Rel.w.b); 1420 if (Rel.w.c >= (relocsec->sh_size / relocsec->sh_entsize)) { 1421 // We have reached the end of the relocations for this section. See if there 1422 // is another relocation section. 1423 typename RelocMap_t::mapped_type relocseclist = 1424 SectionRelocMap.lookup(getSection(Rel.w.a)); 1425 1426 // Do a binary search for the current reloc section index (which must be 1427 // present). Then get the next one. 1428 typename RelocMap_t::mapped_type::const_iterator loc = 1429 std::lower_bound(relocseclist.begin(), relocseclist.end(), Rel.w.b); 1430 ++loc; 1431 1432 // If there is no next one, don't do anything. The ++Rel.w.c above sets Rel 1433 // to the end iterator. 1434 if (loc != relocseclist.end()) { 1435 Rel.w.b = *loc; 1436 Rel.w.a = 0; 1437 } 1438 } 1439 Result = RelocationRef(Rel, this); 1440 return object_error::success; 1441 } 1442 1443 template<class ELFT> 1444 error_code ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel, 1445 SymbolRef &Result) const { 1446 uint32_t symbolIdx; 1447 const Elf_Shdr *sec = getSection(Rel.w.b); 1448 switch (sec->sh_type) { 1449 default : 1450 report_fatal_error("Invalid section type in Rel!"); 1451 case ELF::SHT_REL : { 1452 symbolIdx = getRel(Rel)->getSymbol(); 1453 break; 1454 } 1455 case ELF::SHT_RELA : { 1456 symbolIdx = getRela(Rel)->getSymbol(); 1457 break; 1458 } 1459 } 1460 DataRefImpl SymbolData; 1461 IndexMap_t::const_iterator it = SymbolTableSectionsIndexMap.find(sec->sh_link); 1462 if (it == SymbolTableSectionsIndexMap.end()) 1463 report_fatal_error("Relocation symbol table not found!"); 1464 SymbolData.d.a = symbolIdx; 1465 SymbolData.d.b = it->second; 1466 Result = SymbolRef(SymbolData, this); 1467 return object_error::success; 1468 } 1469 1470 template<class ELFT> 1471 error_code ELFObjectFile<ELFT>::getRelocationAddress(DataRefImpl Rel, 1472 uint64_t &Result) const { 1473 uint64_t offset; 1474 const Elf_Shdr *sec = getSection(Rel.w.b); 1475 switch (sec->sh_type) { 1476 default : 1477 report_fatal_error("Invalid section type in Rel!"); 1478 case ELF::SHT_REL : { 1479 offset = getRel(Rel)->r_offset; 1480 break; 1481 } 1482 case ELF::SHT_RELA : { 1483 offset = getRela(Rel)->r_offset; 1484 break; 1485 } 1486 } 1487 1488 Result = offset; 1489 return object_error::success; 1490 } 1491 1492 template<class ELFT> 1493 error_code ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel, 1494 uint64_t &Result) const { 1495 uint64_t offset; 1496 const Elf_Shdr *sec = getSection(Rel.w.b); 1497 switch (sec->sh_type) { 1498 default : 1499 report_fatal_error("Invalid section type in Rel!"); 1500 case ELF::SHT_REL : { 1501 offset = getRel(Rel)->r_offset; 1502 break; 1503 } 1504 case ELF::SHT_RELA : { 1505 offset = getRela(Rel)->r_offset; 1506 break; 1507 } 1508 } 1509 1510 Result = offset - sec->sh_addr; 1511 return object_error::success; 1512 } 1513 1514 template<class ELFT> 1515 error_code ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel, 1516 uint64_t &Result) const { 1517 const Elf_Shdr *sec = getSection(Rel.w.b); 1518 switch (sec->sh_type) { 1519 default : 1520 report_fatal_error("Invalid section type in Rel!"); 1521 case ELF::SHT_REL : { 1522 Result = getRel(Rel)->getType(); 1523 break; 1524 } 1525 case ELF::SHT_RELA : { 1526 Result = getRela(Rel)->getType(); 1527 break; 1528 } 1529 } 1530 return object_error::success; 1531 } 1532 1533 #define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \ 1534 case ELF::enum: res = #enum; break; 1535 1536 template<class ELFT> 1537 error_code ELFObjectFile<ELFT>::getRelocationTypeName( 1538 DataRefImpl Rel, SmallVectorImpl<char> &Result) const { 1539 const Elf_Shdr *sec = getSection(Rel.w.b); 1540 uint32_t type; 1541 StringRef res; 1542 switch (sec->sh_type) { 1543 default : 1544 return object_error::parse_failed; 1545 case ELF::SHT_REL : { 1546 type = getRel(Rel)->getType(); 1547 break; 1548 } 1549 case ELF::SHT_RELA : { 1550 type = getRela(Rel)->getType(); 1551 break; 1552 } 1553 } 1554 switch (Header->e_machine) { 1555 case ELF::EM_X86_64: 1556 switch (type) { 1557 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE); 1558 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64); 1559 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32); 1560 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32); 1561 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32); 1562 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY); 1563 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT); 1564 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT); 1565 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE); 1566 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL); 1567 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32); 1568 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S); 1569 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16); 1570 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16); 1571 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8); 1572 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8); 1573 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64); 1574 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64); 1575 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64); 1576 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD); 1577 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD); 1578 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32); 1579 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF); 1580 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32); 1581 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64); 1582 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64); 1583 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32); 1584 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32); 1585 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64); 1586 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC); 1587 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL); 1588 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC); 1589 default: 1590 res = "Unknown"; 1591 } 1592 break; 1593 case ELF::EM_386: 1594 switch (type) { 1595 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE); 1596 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32); 1597 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32); 1598 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32); 1599 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32); 1600 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY); 1601 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT); 1602 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT); 1603 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE); 1604 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF); 1605 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC); 1606 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT); 1607 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF); 1608 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE); 1609 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE); 1610 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE); 1611 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD); 1612 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM); 1613 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16); 1614 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16); 1615 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8); 1616 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8); 1617 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32); 1618 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH); 1619 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL); 1620 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP); 1621 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32); 1622 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH); 1623 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL); 1624 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP); 1625 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32); 1626 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32); 1627 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32); 1628 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32); 1629 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32); 1630 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32); 1631 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC); 1632 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL); 1633 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC); 1634 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE); 1635 default: 1636 res = "Unknown"; 1637 } 1638 break; 1639 case ELF::EM_AARCH64: 1640 switch (type) { 1641 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_NONE); 1642 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS64); 1643 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS32); 1644 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS16); 1645 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL64); 1646 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL32); 1647 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL16); 1648 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0); 1649 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0_NC); 1650 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1); 1651 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1_NC); 1652 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2); 1653 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2_NC); 1654 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G3); 1655 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G0); 1656 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G1); 1657 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G2); 1658 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD_PREL_LO19); 1659 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_LO21); 1660 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_PG_HI21); 1661 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADD_ABS_LO12_NC); 1662 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST8_ABS_LO12_NC); 1663 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TSTBR14); 1664 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CONDBR19); 1665 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_JUMP26); 1666 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CALL26); 1667 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST16_ABS_LO12_NC); 1668 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST32_ABS_LO12_NC); 1669 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST64_ABS_LO12_NC); 1670 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST128_ABS_LO12_NC); 1671 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_GOT_PAGE); 1672 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD64_GOT_LO12_NC); 1673 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G2); 1674 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1); 1675 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC); 1676 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0); 1677 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC); 1678 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_HI12); 1679 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12); 1680 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC); 1681 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12); 1682 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC); 1683 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12); 1684 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC); 1685 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12); 1686 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC); 1687 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12); 1688 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC); 1689 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G1); 1690 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC); 1691 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); 1692 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC); 1693 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD_GOTTPREL_PREL19); 1694 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G2); 1695 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1); 1696 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1_NC); 1697 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0); 1698 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0_NC); 1699 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_HI12); 1700 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12); 1701 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12_NC); 1702 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12); 1703 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC); 1704 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12); 1705 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC); 1706 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12); 1707 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC); 1708 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12); 1709 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC); 1710 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADR_PAGE); 1711 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_LD64_LO12_NC); 1712 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADD_LO12_NC); 1713 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_CALL); 1714 1715 default: 1716 res = "Unknown"; 1717 } 1718 break; 1719 case ELF::EM_ARM: 1720 switch (type) { 1721 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_NONE); 1722 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PC24); 1723 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32); 1724 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32); 1725 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G0); 1726 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS16); 1727 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS12); 1728 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ABS5); 1729 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS8); 1730 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL32); 1731 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_CALL); 1732 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC8); 1733 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BREL_ADJ); 1734 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESC); 1735 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_SWI8); 1736 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_XPC25); 1737 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_XPC22); 1738 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPMOD32); 1739 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPOFF32); 1740 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_TPOFF32); 1741 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_COPY); 1742 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GLOB_DAT); 1743 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP_SLOT); 1744 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_RELATIVE); 1745 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF32); 1746 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_PREL); 1747 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL); 1748 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32); 1749 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_CALL); 1750 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP24); 1751 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP24); 1752 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_ABS); 1753 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_7_0); 1754 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_15_8); 1755 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_23_15); 1756 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SBREL_11_0_NC); 1757 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_19_12_NC); 1758 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_27_20_CK); 1759 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET1); 1760 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL31); 1761 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_V4BX); 1762 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET2); 1763 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PREL31); 1764 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_ABS_NC); 1765 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_ABS); 1766 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_PREL_NC); 1767 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_PREL); 1768 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_ABS_NC); 1769 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_ABS); 1770 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_PREL_NC); 1771 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_PREL); 1772 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP19); 1773 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP6); 1774 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ALU_PREL_11_0); 1775 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC12); 1776 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32_NOI); 1777 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32_NOI); 1778 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0_NC); 1779 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0); 1780 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1_NC); 1781 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1); 1782 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G2); 1783 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G1); 1784 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G2); 1785 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G0); 1786 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G1); 1787 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G2); 1788 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G0); 1789 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G1); 1790 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G2); 1791 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0_NC); 1792 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0); 1793 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1_NC); 1794 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1); 1795 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G2); 1796 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G0); 1797 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G1); 1798 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G2); 1799 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G0); 1800 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G1); 1801 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G2); 1802 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G0); 1803 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G1); 1804 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G2); 1805 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL_NC); 1806 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_BREL); 1807 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL); 1808 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL_NC); 1809 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_BREL); 1810 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL); 1811 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GOTDESC); 1812 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_CALL); 1813 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESCSEQ); 1814 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_CALL); 1815 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32_ABS); 1816 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_ABS); 1817 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_PREL); 1818 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL12); 1819 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF12); 1820 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTRELAX); 1821 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTENTRY); 1822 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTINHERIT); 1823 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP11); 1824 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP8); 1825 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GD32); 1826 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDM32); 1827 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO32); 1828 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE32); 1829 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE32); 1830 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO12); 1831 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE12); 1832 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE12GP); 1833 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_0); 1834 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_1); 1835 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_2); 1836 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_3); 1837 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_4); 1838 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_5); 1839 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_6); 1840 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_7); 1841 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_8); 1842 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_9); 1843 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_10); 1844 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_11); 1845 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_12); 1846 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_13); 1847 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_14); 1848 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_15); 1849 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ME_TOO); 1850 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ16); 1851 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ32); 1852 default: 1853 res = "Unknown"; 1854 } 1855 break; 1856 case ELF::EM_HEXAGON: 1857 switch (type) { 1858 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE); 1859 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL); 1860 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL); 1861 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL); 1862 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16); 1863 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16); 1864 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32); 1865 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16); 1866 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8); 1867 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0); 1868 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1); 1869 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2); 1870 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3); 1871 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16); 1872 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL); 1873 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL); 1874 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X); 1875 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X); 1876 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X); 1877 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X); 1878 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X); 1879 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X); 1880 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X); 1881 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X); 1882 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X); 1883 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X); 1884 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X); 1885 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X); 1886 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X); 1887 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X); 1888 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X); 1889 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL); 1890 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY); 1891 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT); 1892 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT); 1893 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE); 1894 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL); 1895 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16); 1896 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16); 1897 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32); 1898 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16); 1899 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16); 1900 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32); 1901 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16); 1902 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32); 1903 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16); 1904 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16); 1905 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32); 1906 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16); 1907 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL); 1908 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16); 1909 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16); 1910 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32); 1911 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16); 1912 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16); 1913 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16); 1914 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32); 1915 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16); 1916 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16); 1917 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32); 1918 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16); 1919 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16); 1920 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16); 1921 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32); 1922 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16); 1923 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X); 1924 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X); 1925 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X); 1926 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X); 1927 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X); 1928 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X); 1929 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X); 1930 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X); 1931 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X); 1932 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X); 1933 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X); 1934 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X); 1935 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X); 1936 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X); 1937 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X); 1938 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X); 1939 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X); 1940 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X); 1941 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X); 1942 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X); 1943 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X); 1944 default: 1945 res = "Unknown"; 1946 } 1947 break; 1948 default: 1949 res = "Unknown"; 1950 } 1951 Result.append(res.begin(), res.end()); 1952 return object_error::success; 1953 } 1954 1955 #undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME 1956 1957 template<class ELFT> 1958 error_code ELFObjectFile<ELFT>::getRelocationAdditionalInfo( 1959 DataRefImpl Rel, int64_t &Result) const { 1960 const Elf_Shdr *sec = getSection(Rel.w.b); 1961 switch (sec->sh_type) { 1962 default : 1963 report_fatal_error("Invalid section type in Rel!"); 1964 case ELF::SHT_REL : { 1965 Result = 0; 1966 return object_error::success; 1967 } 1968 case ELF::SHT_RELA : { 1969 Result = getRela(Rel)->r_addend; 1970 return object_error::success; 1971 } 1972 } 1973 } 1974 1975 template<class ELFT> 1976 error_code ELFObjectFile<ELFT>::getRelocationValueString( 1977 DataRefImpl Rel, SmallVectorImpl<char> &Result) const { 1978 const Elf_Shdr *sec = getSection(Rel.w.b); 1979 uint8_t type; 1980 StringRef res; 1981 int64_t addend = 0; 1982 uint16_t symbol_index = 0; 1983 switch (sec->sh_type) { 1984 default: 1985 return object_error::parse_failed; 1986 case ELF::SHT_REL: { 1987 type = getRel(Rel)->getType(); 1988 symbol_index = getRel(Rel)->getSymbol(); 1989 // TODO: Read implicit addend from section data. 1990 break; 1991 } 1992 case ELF::SHT_RELA: { 1993 type = getRela(Rel)->getType(); 1994 symbol_index = getRela(Rel)->getSymbol(); 1995 addend = getRela(Rel)->r_addend; 1996 break; 1997 } 1998 } 1999 const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index); 2000 StringRef symname; 2001 if (error_code ec = getSymbolName(getSection(sec->sh_link), symb, symname)) 2002 return ec; 2003 switch (Header->e_machine) { 2004 case ELF::EM_X86_64: 2005 switch (type) { 2006 case ELF::R_X86_64_PC8: 2007 case ELF::R_X86_64_PC16: 2008 case ELF::R_X86_64_PC32: { 2009 std::string fmtbuf; 2010 raw_string_ostream fmt(fmtbuf); 2011 fmt << symname << (addend < 0 ? "" : "+") << addend << "-P"; 2012 fmt.flush(); 2013 Result.append(fmtbuf.begin(), fmtbuf.end()); 2014 } 2015 break; 2016 case ELF::R_X86_64_8: 2017 case ELF::R_X86_64_16: 2018 case ELF::R_X86_64_32: 2019 case ELF::R_X86_64_32S: 2020 case ELF::R_X86_64_64: { 2021 std::string fmtbuf; 2022 raw_string_ostream fmt(fmtbuf); 2023 fmt << symname << (addend < 0 ? "" : "+") << addend; 2024 fmt.flush(); 2025 Result.append(fmtbuf.begin(), fmtbuf.end()); 2026 } 2027 break; 2028 default: 2029 res = "Unknown"; 2030 } 2031 break; 2032 case ELF::EM_AARCH64: 2033 case ELF::EM_ARM: 2034 case ELF::EM_HEXAGON: 2035 res = symname; 2036 break; 2037 default: 2038 res = "Unknown"; 2039 } 2040 if (Result.empty()) 2041 Result.append(res.begin(), res.end()); 2042 return object_error::success; 2043 } 2044 2045 // Verify that the last byte in the string table in a null. 2046 template<class ELFT> 2047 void ELFObjectFile<ELFT>::VerifyStrTab(const Elf_Shdr *sh) const { 2048 const char *strtab = (const char*)base() + sh->sh_offset; 2049 if (strtab[sh->sh_size - 1] != 0) 2050 // FIXME: Proper error handling. 2051 report_fatal_error("String table must end with a null terminator!"); 2052 } 2053 2054 template<class ELFT> 2055 ELFObjectFile<ELFT>::ELFObjectFile(MemoryBuffer *Object, error_code &ec) 2056 : ObjectFile(getELFType( 2057 static_cast<endianness>(ELFT::TargetEndianness) == support::little, 2058 ELFT::Is64Bits), 2059 Object, 2060 ec) 2061 , isDyldELFObject(false) 2062 , SectionHeaderTable(0) 2063 , dot_shstrtab_sec(0) 2064 , dot_strtab_sec(0) 2065 , dot_dynstr_sec(0) 2066 , dot_dynamic_sec(0) 2067 , dot_gnu_version_sec(0) 2068 , dot_gnu_version_r_sec(0) 2069 , dot_gnu_version_d_sec(0) 2070 , dt_soname(0) 2071 { 2072 2073 const uint64_t FileSize = Data->getBufferSize(); 2074 2075 if (sizeof(Elf_Ehdr) > FileSize) 2076 // FIXME: Proper error handling. 2077 report_fatal_error("File too short!"); 2078 2079 Header = reinterpret_cast<const Elf_Ehdr *>(base()); 2080 2081 if (Header->e_shoff == 0) 2082 return; 2083 2084 const uint64_t SectionTableOffset = Header->e_shoff; 2085 2086 if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize) 2087 // FIXME: Proper error handling. 2088 report_fatal_error("Section header table goes past end of file!"); 2089 2090 // The getNumSections() call below depends on SectionHeaderTable being set. 2091 SectionHeaderTable = 2092 reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset); 2093 const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize; 2094 2095 if (SectionTableOffset + SectionTableSize > FileSize) 2096 // FIXME: Proper error handling. 2097 report_fatal_error("Section table goes past end of file!"); 2098 2099 // To find the symbol tables we walk the section table to find SHT_SYMTAB. 2100 const Elf_Shdr* SymbolTableSectionHeaderIndex = 0; 2101 const Elf_Shdr* sh = SectionHeaderTable; 2102 2103 // Reserve SymbolTableSections[0] for .dynsym 2104 SymbolTableSections.push_back(NULL); 2105 2106 for (uint64_t i = 0, e = getNumSections(); i != e; ++i) { 2107 switch (sh->sh_type) { 2108 case ELF::SHT_SYMTAB_SHNDX: { 2109 if (SymbolTableSectionHeaderIndex) 2110 // FIXME: Proper error handling. 2111 report_fatal_error("More than one .symtab_shndx!"); 2112 SymbolTableSectionHeaderIndex = sh; 2113 break; 2114 } 2115 case ELF::SHT_SYMTAB: { 2116 SymbolTableSectionsIndexMap[i] = SymbolTableSections.size(); 2117 SymbolTableSections.push_back(sh); 2118 break; 2119 } 2120 case ELF::SHT_DYNSYM: { 2121 if (SymbolTableSections[0] != NULL) 2122 // FIXME: Proper error handling. 2123 report_fatal_error("More than one .dynsym!"); 2124 SymbolTableSectionsIndexMap[i] = 0; 2125 SymbolTableSections[0] = sh; 2126 break; 2127 } 2128 case ELF::SHT_REL: 2129 case ELF::SHT_RELA: { 2130 SectionRelocMap[getSection(sh->sh_info)].push_back(i); 2131 break; 2132 } 2133 case ELF::SHT_DYNAMIC: { 2134 if (dot_dynamic_sec != NULL) 2135 // FIXME: Proper error handling. 2136 report_fatal_error("More than one .dynamic!"); 2137 dot_dynamic_sec = sh; 2138 break; 2139 } 2140 case ELF::SHT_GNU_versym: { 2141 if (dot_gnu_version_sec != NULL) 2142 // FIXME: Proper error handling. 2143 report_fatal_error("More than one .gnu.version section!"); 2144 dot_gnu_version_sec = sh; 2145 break; 2146 } 2147 case ELF::SHT_GNU_verdef: { 2148 if (dot_gnu_version_d_sec != NULL) 2149 // FIXME: Proper error handling. 2150 report_fatal_error("More than one .gnu.version_d section!"); 2151 dot_gnu_version_d_sec = sh; 2152 break; 2153 } 2154 case ELF::SHT_GNU_verneed: { 2155 if (dot_gnu_version_r_sec != NULL) 2156 // FIXME: Proper error handling. 2157 report_fatal_error("More than one .gnu.version_r section!"); 2158 dot_gnu_version_r_sec = sh; 2159 break; 2160 } 2161 } 2162 ++sh; 2163 } 2164 2165 // Sort section relocation lists by index. 2166 for (typename RelocMap_t::iterator i = SectionRelocMap.begin(), 2167 e = SectionRelocMap.end(); i != e; ++i) { 2168 std::sort(i->second.begin(), i->second.end()); 2169 } 2170 2171 // Get string table sections. 2172 dot_shstrtab_sec = getSection(getStringTableIndex()); 2173 if (dot_shstrtab_sec) { 2174 // Verify that the last byte in the string table in a null. 2175 VerifyStrTab(dot_shstrtab_sec); 2176 } 2177 2178 // Merge this into the above loop. 2179 for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable), 2180 *e = i + getNumSections() * Header->e_shentsize; 2181 i != e; i += Header->e_shentsize) { 2182 const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i); 2183 if (sh->sh_type == ELF::SHT_STRTAB) { 2184 StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name)); 2185 if (SectionName == ".strtab") { 2186 if (dot_strtab_sec != 0) 2187 // FIXME: Proper error handling. 2188 report_fatal_error("Already found section named .strtab!"); 2189 dot_strtab_sec = sh; 2190 VerifyStrTab(dot_strtab_sec); 2191 } else if (SectionName == ".dynstr") { 2192 if (dot_dynstr_sec != 0) 2193 // FIXME: Proper error handling. 2194 report_fatal_error("Already found section named .dynstr!"); 2195 dot_dynstr_sec = sh; 2196 VerifyStrTab(dot_dynstr_sec); 2197 } 2198 } 2199 } 2200 2201 // Build symbol name side-mapping if there is one. 2202 if (SymbolTableSectionHeaderIndex) { 2203 const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() + 2204 SymbolTableSectionHeaderIndex->sh_offset); 2205 error_code ec; 2206 for (symbol_iterator si = begin_symbols(), 2207 se = end_symbols(); si != se; si.increment(ec)) { 2208 if (ec) 2209 report_fatal_error("Fewer extended symbol table entries than symbols!"); 2210 if (*ShndxTable != ELF::SHN_UNDEF) 2211 ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable; 2212 ++ShndxTable; 2213 } 2214 } 2215 } 2216 2217 // Get the symbol table index in the symtab section given a symbol 2218 template<class ELFT> 2219 uint64_t ELFObjectFile<ELFT>::getSymbolIndex(const Elf_Sym *Sym) const { 2220 assert(SymbolTableSections.size() == 1 && "Only one symbol table supported!"); 2221 const Elf_Shdr *SymTab = *SymbolTableSections.begin(); 2222 uintptr_t SymLoc = uintptr_t(Sym); 2223 uintptr_t SymTabLoc = uintptr_t(base() + SymTab->sh_offset); 2224 assert(SymLoc > SymTabLoc && "Symbol not in symbol table!"); 2225 uint64_t SymOffset = SymLoc - SymTabLoc; 2226 assert(SymOffset % SymTab->sh_entsize == 0 && 2227 "Symbol not multiple of symbol size!"); 2228 return SymOffset / SymTab->sh_entsize; 2229 } 2230 2231 template<class ELFT> 2232 symbol_iterator ELFObjectFile<ELFT>::begin_symbols() const { 2233 DataRefImpl SymbolData; 2234 if (SymbolTableSections.size() <= 1) { 2235 SymbolData.d.a = std::numeric_limits<uint32_t>::max(); 2236 SymbolData.d.b = std::numeric_limits<uint32_t>::max(); 2237 } else { 2238 SymbolData.d.a = 1; // The 0th symbol in ELF is fake. 2239 SymbolData.d.b = 1; // The 0th table is .dynsym 2240 } 2241 return symbol_iterator(SymbolRef(SymbolData, this)); 2242 } 2243 2244 template<class ELFT> 2245 symbol_iterator ELFObjectFile<ELFT>::end_symbols() const { 2246 DataRefImpl SymbolData; 2247 SymbolData.d.a = std::numeric_limits<uint32_t>::max(); 2248 SymbolData.d.b = std::numeric_limits<uint32_t>::max(); 2249 return symbol_iterator(SymbolRef(SymbolData, this)); 2250 } 2251 2252 template<class ELFT> 2253 symbol_iterator ELFObjectFile<ELFT>::begin_dynamic_symbols() const { 2254 DataRefImpl SymbolData; 2255 if (SymbolTableSections[0] == NULL) { 2256 SymbolData.d.a = std::numeric_limits<uint32_t>::max(); 2257 SymbolData.d.b = std::numeric_limits<uint32_t>::max(); 2258 } else { 2259 SymbolData.d.a = 1; // The 0th symbol in ELF is fake. 2260 SymbolData.d.b = 0; // The 0th table is .dynsym 2261 } 2262 return symbol_iterator(SymbolRef(SymbolData, this)); 2263 } 2264 2265 template<class ELFT> 2266 symbol_iterator ELFObjectFile<ELFT>::end_dynamic_symbols() const { 2267 DataRefImpl SymbolData; 2268 SymbolData.d.a = std::numeric_limits<uint32_t>::max(); 2269 SymbolData.d.b = std::numeric_limits<uint32_t>::max(); 2270 return symbol_iterator(SymbolRef(SymbolData, this)); 2271 } 2272 2273 template<class ELFT> 2274 section_iterator ELFObjectFile<ELFT>::begin_sections() const { 2275 DataRefImpl ret; 2276 ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff); 2277 return section_iterator(SectionRef(ret, this)); 2278 } 2279 2280 template<class ELFT> 2281 section_iterator ELFObjectFile<ELFT>::end_sections() const { 2282 DataRefImpl ret; 2283 ret.p = reinterpret_cast<intptr_t>(base() 2284 + Header->e_shoff 2285 + (Header->e_shentsize*getNumSections())); 2286 return section_iterator(SectionRef(ret, this)); 2287 } 2288 2289 template<class ELFT> 2290 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator 2291 ELFObjectFile<ELFT>::begin_dynamic_table() const { 2292 if (dot_dynamic_sec) 2293 return Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize, 2294 (const char *)base() + dot_dynamic_sec->sh_offset); 2295 return Elf_Dyn_iterator(0, 0); 2296 } 2297 2298 template<class ELFT> 2299 typename ELFObjectFile<ELFT>::Elf_Dyn_iterator 2300 ELFObjectFile<ELFT>::end_dynamic_table(bool NULLEnd) const { 2301 if (dot_dynamic_sec) { 2302 Elf_Dyn_iterator Ret(dot_dynamic_sec->sh_entsize, 2303 (const char *)base() + dot_dynamic_sec->sh_offset + 2304 dot_dynamic_sec->sh_size); 2305 2306 if (NULLEnd) { 2307 Elf_Dyn_iterator Start = begin_dynamic_table(); 2308 for (; Start != Ret && Start->getTag() != ELF::DT_NULL; ++Start) 2309 ; 2310 // Include the DT_NULL. 2311 if (Start != Ret) 2312 ++Start; 2313 Ret = Start; 2314 } 2315 return Ret; 2316 } 2317 return Elf_Dyn_iterator(0, 0); 2318 } 2319 2320 template<class ELFT> 2321 StringRef ELFObjectFile<ELFT>::getLoadName() const { 2322 if (!dt_soname) { 2323 // Find the DT_SONAME entry 2324 Elf_Dyn_iterator it = begin_dynamic_table(); 2325 Elf_Dyn_iterator ie = end_dynamic_table(); 2326 for (; it != ie; ++it) { 2327 if (it->getTag() == ELF::DT_SONAME) 2328 break; 2329 } 2330 if (it != ie) { 2331 if (dot_dynstr_sec == NULL) 2332 report_fatal_error("Dynamic string table is missing"); 2333 dt_soname = getString(dot_dynstr_sec, it->getVal()); 2334 } else { 2335 dt_soname = ""; 2336 } 2337 } 2338 return dt_soname; 2339 } 2340 2341 template<class ELFT> 2342 library_iterator ELFObjectFile<ELFT>::begin_libraries_needed() const { 2343 // Find the first DT_NEEDED entry 2344 Elf_Dyn_iterator i = begin_dynamic_table(); 2345 Elf_Dyn_iterator e = end_dynamic_table(); 2346 for (; i != e; ++i) { 2347 if (i->getTag() == ELF::DT_NEEDED) 2348 break; 2349 } 2350 2351 DataRefImpl DRI; 2352 DRI.p = reinterpret_cast<uintptr_t>(i.get()); 2353 return library_iterator(LibraryRef(DRI, this)); 2354 } 2355 2356 template<class ELFT> 2357 error_code ELFObjectFile<ELFT>::getLibraryNext(DataRefImpl Data, 2358 LibraryRef &Result) const { 2359 // Use the same DataRefImpl format as DynRef. 2360 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize, 2361 reinterpret_cast<const char *>(Data.p)); 2362 Elf_Dyn_iterator e = end_dynamic_table(); 2363 2364 // Skip the current dynamic table entry. 2365 ++i; 2366 2367 // Find the next DT_NEEDED entry. 2368 for (; i != e && i->getTag() != ELF::DT_NEEDED; ++i); 2369 2370 DataRefImpl DRI; 2371 DRI.p = reinterpret_cast<uintptr_t>(i.get()); 2372 Result = LibraryRef(DRI, this); 2373 return object_error::success; 2374 } 2375 2376 template<class ELFT> 2377 error_code ELFObjectFile<ELFT>::getLibraryPath(DataRefImpl Data, 2378 StringRef &Res) const { 2379 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize, 2380 reinterpret_cast<const char *>(Data.p)); 2381 if (i == end_dynamic_table()) 2382 report_fatal_error("getLibraryPath() called on iterator end"); 2383 2384 if (i->getTag() != ELF::DT_NEEDED) 2385 report_fatal_error("Invalid library_iterator"); 2386 2387 // This uses .dynstr to lookup the name of the DT_NEEDED entry. 2388 // THis works as long as DT_STRTAB == .dynstr. This is true most of 2389 // the time, but the specification allows exceptions. 2390 // TODO: This should really use DT_STRTAB instead. Doing this requires 2391 // reading the program headers. 2392 if (dot_dynstr_sec == NULL) 2393 report_fatal_error("Dynamic string table is missing"); 2394 Res = getString(dot_dynstr_sec, i->getVal()); 2395 return object_error::success; 2396 } 2397 2398 template<class ELFT> 2399 library_iterator ELFObjectFile<ELFT>::end_libraries_needed() const { 2400 Elf_Dyn_iterator e = end_dynamic_table(); 2401 DataRefImpl DRI; 2402 DRI.p = reinterpret_cast<uintptr_t>(e.get()); 2403 return library_iterator(LibraryRef(DRI, this)); 2404 } 2405 2406 template<class ELFT> 2407 uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const { 2408 return ELFT::Is64Bits ? 8 : 4; 2409 } 2410 2411 template<class ELFT> 2412 StringRef ELFObjectFile<ELFT>::getFileFormatName() const { 2413 switch(Header->e_ident[ELF::EI_CLASS]) { 2414 case ELF::ELFCLASS32: 2415 switch(Header->e_machine) { 2416 case ELF::EM_386: 2417 return "ELF32-i386"; 2418 case ELF::EM_X86_64: 2419 return "ELF32-x86-64"; 2420 case ELF::EM_ARM: 2421 return "ELF32-arm"; 2422 case ELF::EM_HEXAGON: 2423 return "ELF32-hexagon"; 2424 case ELF::EM_MIPS: 2425 return "ELF32-mips"; 2426 default: 2427 return "ELF32-unknown"; 2428 } 2429 case ELF::ELFCLASS64: 2430 switch(Header->e_machine) { 2431 case ELF::EM_386: 2432 return "ELF64-i386"; 2433 case ELF::EM_X86_64: 2434 return "ELF64-x86-64"; 2435 case ELF::EM_AARCH64: 2436 return "ELF64-aarch64"; 2437 case ELF::EM_PPC64: 2438 return "ELF64-ppc64"; 2439 default: 2440 return "ELF64-unknown"; 2441 } 2442 default: 2443 // FIXME: Proper error handling. 2444 report_fatal_error("Invalid ELFCLASS!"); 2445 } 2446 } 2447 2448 template<class ELFT> 2449 unsigned ELFObjectFile<ELFT>::getArch() const { 2450 switch(Header->e_machine) { 2451 case ELF::EM_386: 2452 return Triple::x86; 2453 case ELF::EM_X86_64: 2454 return Triple::x86_64; 2455 case ELF::EM_AARCH64: 2456 return Triple::aarch64; 2457 case ELF::EM_ARM: 2458 return Triple::arm; 2459 case ELF::EM_HEXAGON: 2460 return Triple::hexagon; 2461 case ELF::EM_MIPS: 2462 return (ELFT::TargetEndianness == support::little) ? 2463 Triple::mipsel : Triple::mips; 2464 case ELF::EM_PPC64: 2465 return Triple::ppc64; 2466 default: 2467 return Triple::UnknownArch; 2468 } 2469 } 2470 2471 template<class ELFT> 2472 uint64_t ELFObjectFile<ELFT>::getNumSections() const { 2473 assert(Header && "Header not initialized!"); 2474 if (Header->e_shnum == ELF::SHN_UNDEF) { 2475 assert(SectionHeaderTable && "SectionHeaderTable not initialized!"); 2476 return SectionHeaderTable->sh_size; 2477 } 2478 return Header->e_shnum; 2479 } 2480 2481 template<class ELFT> 2482 uint64_t 2483 ELFObjectFile<ELFT>::getStringTableIndex() const { 2484 if (Header->e_shnum == ELF::SHN_UNDEF) { 2485 if (Header->e_shstrndx == ELF::SHN_HIRESERVE) 2486 return SectionHeaderTable->sh_link; 2487 if (Header->e_shstrndx >= getNumSections()) 2488 return 0; 2489 } 2490 return Header->e_shstrndx; 2491 } 2492 2493 template<class ELFT> 2494 template<typename T> 2495 inline const T * 2496 ELFObjectFile<ELFT>::getEntry(uint16_t Section, uint32_t Entry) const { 2497 return getEntry<T>(getSection(Section), Entry); 2498 } 2499 2500 template<class ELFT> 2501 template<typename T> 2502 inline const T * 2503 ELFObjectFile<ELFT>::getEntry(const Elf_Shdr * Section, uint32_t Entry) const { 2504 return reinterpret_cast<const T *>( 2505 base() 2506 + Section->sh_offset 2507 + (Entry * Section->sh_entsize)); 2508 } 2509 2510 template<class ELFT> 2511 const typename ELFObjectFile<ELFT>::Elf_Sym * 2512 ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const { 2513 return getEntry<Elf_Sym>(SymbolTableSections[Symb.d.b], Symb.d.a); 2514 } 2515 2516 template<class ELFT> 2517 const typename ELFObjectFile<ELFT>::Elf_Rel * 2518 ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const { 2519 return getEntry<Elf_Rel>(Rel.w.b, Rel.w.c); 2520 } 2521 2522 template<class ELFT> 2523 const typename ELFObjectFile<ELFT>::Elf_Rela * 2524 ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const { 2525 return getEntry<Elf_Rela>(Rela.w.b, Rela.w.c); 2526 } 2527 2528 template<class ELFT> 2529 const typename ELFObjectFile<ELFT>::Elf_Shdr * 2530 ELFObjectFile<ELFT>::getSection(DataRefImpl Symb) const { 2531 const Elf_Shdr *sec = getSection(Symb.d.b); 2532 if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM) 2533 // FIXME: Proper error handling. 2534 report_fatal_error("Invalid symbol table section!"); 2535 return sec; 2536 } 2537 2538 template<class ELFT> 2539 const typename ELFObjectFile<ELFT>::Elf_Shdr * 2540 ELFObjectFile<ELFT>::getSection(uint32_t index) const { 2541 if (index == 0) 2542 return 0; 2543 if (!SectionHeaderTable || index >= getNumSections()) 2544 // FIXME: Proper error handling. 2545 report_fatal_error("Invalid section index!"); 2546 2547 return reinterpret_cast<const Elf_Shdr *>( 2548 reinterpret_cast<const char *>(SectionHeaderTable) 2549 + (index * Header->e_shentsize)); 2550 } 2551 2552 template<class ELFT> 2553 const char *ELFObjectFile<ELFT>::getString(uint32_t section, 2554 ELF::Elf32_Word offset) const { 2555 return getString(getSection(section), offset); 2556 } 2557 2558 template<class ELFT> 2559 const char *ELFObjectFile<ELFT>::getString(const Elf_Shdr *section, 2560 ELF::Elf32_Word offset) const { 2561 assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!"); 2562 if (offset >= section->sh_size) 2563 // FIXME: Proper error handling. 2564 report_fatal_error("Symbol name offset outside of string table!"); 2565 return (const char *)base() + section->sh_offset + offset; 2566 } 2567 2568 template<class ELFT> 2569 error_code ELFObjectFile<ELFT>::getSymbolName(const Elf_Shdr *section, 2570 const Elf_Sym *symb, 2571 StringRef &Result) const { 2572 if (symb->st_name == 0) { 2573 const Elf_Shdr *section = getSection(symb); 2574 if (!section) 2575 Result = ""; 2576 else 2577 Result = getString(dot_shstrtab_sec, section->sh_name); 2578 return object_error::success; 2579 } 2580 2581 if (section == SymbolTableSections[0]) { 2582 // Symbol is in .dynsym, use .dynstr string table 2583 Result = getString(dot_dynstr_sec, symb->st_name); 2584 } else { 2585 // Use the default symbol table name section. 2586 Result = getString(dot_strtab_sec, symb->st_name); 2587 } 2588 return object_error::success; 2589 } 2590 2591 template<class ELFT> 2592 error_code ELFObjectFile<ELFT>::getSectionName(const Elf_Shdr *section, 2593 StringRef &Result) const { 2594 Result = StringRef(getString(dot_shstrtab_sec, section->sh_name)); 2595 return object_error::success; 2596 } 2597 2598 template<class ELFT> 2599 error_code ELFObjectFile<ELFT>::getSymbolVersion(const Elf_Shdr *section, 2600 const Elf_Sym *symb, 2601 StringRef &Version, 2602 bool &IsDefault) const { 2603 // Handle non-dynamic symbols. 2604 if (section != SymbolTableSections[0]) { 2605 // Non-dynamic symbols can have versions in their names 2606 // A name of the form 'foo@V1' indicates version 'V1', non-default. 2607 // A name of the form 'foo@@V2' indicates version 'V2', default version. 2608 StringRef Name; 2609 error_code ec = getSymbolName(section, symb, Name); 2610 if (ec != object_error::success) 2611 return ec; 2612 size_t atpos = Name.find('@'); 2613 if (atpos == StringRef::npos) { 2614 Version = ""; 2615 IsDefault = false; 2616 return object_error::success; 2617 } 2618 ++atpos; 2619 if (atpos < Name.size() && Name[atpos] == '@') { 2620 IsDefault = true; 2621 ++atpos; 2622 } else { 2623 IsDefault = false; 2624 } 2625 Version = Name.substr(atpos); 2626 return object_error::success; 2627 } 2628 2629 // This is a dynamic symbol. Look in the GNU symbol version table. 2630 if (dot_gnu_version_sec == NULL) { 2631 // No version table. 2632 Version = ""; 2633 IsDefault = false; 2634 return object_error::success; 2635 } 2636 2637 // Determine the position in the symbol table of this entry. 2638 const char *sec_start = (const char*)base() + section->sh_offset; 2639 size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize; 2640 2641 // Get the corresponding version index entry 2642 const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index); 2643 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION; 2644 2645 // Special markers for unversioned symbols. 2646 if (version_index == ELF::VER_NDX_LOCAL || 2647 version_index == ELF::VER_NDX_GLOBAL) { 2648 Version = ""; 2649 IsDefault = false; 2650 return object_error::success; 2651 } 2652 2653 // Lookup this symbol in the version table 2654 LoadVersionMap(); 2655 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull()) 2656 report_fatal_error("Symbol has version index without corresponding " 2657 "define or reference entry"); 2658 const VersionMapEntry &entry = VersionMap[version_index]; 2659 2660 // Get the version name string 2661 size_t name_offset; 2662 if (entry.isVerdef()) { 2663 // The first Verdaux entry holds the name. 2664 name_offset = entry.getVerdef()->getAux()->vda_name; 2665 } else { 2666 name_offset = entry.getVernaux()->vna_name; 2667 } 2668 Version = getString(dot_dynstr_sec, name_offset); 2669 2670 // Set IsDefault 2671 if (entry.isVerdef()) { 2672 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN); 2673 } else { 2674 IsDefault = false; 2675 } 2676 2677 return object_error::success; 2678 } 2679 2680 /// This is a generic interface for retrieving GNU symbol version 2681 /// information from an ELFObjectFile. 2682 static inline error_code GetELFSymbolVersion(const ObjectFile *Obj, 2683 const SymbolRef &Sym, 2684 StringRef &Version, 2685 bool &IsDefault) { 2686 // Little-endian 32-bit 2687 if (const ELFObjectFile<ELFType<support::little, 4, false> > *ELFObj = 2688 dyn_cast<ELFObjectFile<ELFType<support::little, 4, false> > >(Obj)) 2689 return ELFObj->getSymbolVersion(Sym, Version, IsDefault); 2690 2691 // Big-endian 32-bit 2692 if (const ELFObjectFile<ELFType<support::big, 4, false> > *ELFObj = 2693 dyn_cast<ELFObjectFile<ELFType<support::big, 4, false> > >(Obj)) 2694 return ELFObj->getSymbolVersion(Sym, Version, IsDefault); 2695 2696 // Little-endian 64-bit 2697 if (const ELFObjectFile<ELFType<support::little, 8, true> > *ELFObj = 2698 dyn_cast<ELFObjectFile<ELFType<support::little, 8, true> > >(Obj)) 2699 return ELFObj->getSymbolVersion(Sym, Version, IsDefault); 2700 2701 // Big-endian 64-bit 2702 if (const ELFObjectFile<ELFType<support::big, 8, true> > *ELFObj = 2703 dyn_cast<ELFObjectFile<ELFType<support::big, 8, true> > >(Obj)) 2704 return ELFObj->getSymbolVersion(Sym, Version, IsDefault); 2705 2706 llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF"); 2707 } 2708 2709 } 2710 } 2711 2712 #endif 2713
