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 33namespace llvm { 34namespace object { 35 36using support::endianness; 37 38template<endianness target_endianness, std::size_t max_alignment, bool is64Bits> 39struct ELFType { 40 static const endianness TargetEndianness = target_endianness; 41 static const std::size_t MaxAlignment = max_alignment; 42 static const bool Is64Bits = is64Bits; 43}; 44 45template<typename T, int max_align> 46struct MaximumAlignment { 47 enum {value = AlignOf<T>::Alignment > max_align ? max_align 48 : AlignOf<T>::Alignment}; 49}; 50 51// Subclasses of ELFObjectFile may need this for template instantiation 52inline std::pair<unsigned char, unsigned char> 53getElfArchType(MemoryBuffer *Object) { 54 if (Object->getBufferSize() < ELF::EI_NIDENT) 55 return std::make_pair((uint8_t)ELF::ELFCLASSNONE,(uint8_t)ELF::ELFDATANONE); 56 return std::make_pair( (uint8_t)Object->getBufferStart()[ELF::EI_CLASS] 57 , (uint8_t)Object->getBufferStart()[ELF::EI_DATA]); 58} 59 60// Templates to choose Elf_Addr and Elf_Off depending on is64Bits. 61template<endianness target_endianness, std::size_t max_alignment> 62struct ELFDataTypeTypedefHelperCommon { 63 typedef support::detail::packed_endian_specific_integral 64 <uint16_t, target_endianness, 65 MaximumAlignment<uint16_t, max_alignment>::value> Elf_Half; 66 typedef support::detail::packed_endian_specific_integral 67 <uint32_t, target_endianness, 68 MaximumAlignment<uint32_t, max_alignment>::value> Elf_Word; 69 typedef support::detail::packed_endian_specific_integral 70 <int32_t, target_endianness, 71 MaximumAlignment<int32_t, max_alignment>::value> Elf_Sword; 72 typedef support::detail::packed_endian_specific_integral 73 <uint64_t, target_endianness, 74 MaximumAlignment<uint64_t, max_alignment>::value> Elf_Xword; 75 typedef support::detail::packed_endian_specific_integral 76 <int64_t, target_endianness, 77 MaximumAlignment<int64_t, max_alignment>::value> Elf_Sxword; 78}; 79 80template<class ELFT> 81struct ELFDataTypeTypedefHelper; 82 83/// ELF 32bit types. 84template<endianness TargetEndianness, std::size_t MaxAlign> 85struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, MaxAlign, false> > 86 : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> { 87 typedef uint32_t value_type; 88 typedef support::detail::packed_endian_specific_integral 89 <value_type, TargetEndianness, 90 MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr; 91 typedef support::detail::packed_endian_specific_integral 92 <value_type, TargetEndianness, 93 MaximumAlignment<value_type, MaxAlign>::value> Elf_Off; 94}; 95 96/// ELF 64bit types. 97template<endianness TargetEndianness, std::size_t MaxAlign> 98struct ELFDataTypeTypedefHelper<ELFType<TargetEndianness, MaxAlign, true> > 99 : ELFDataTypeTypedefHelperCommon<TargetEndianness, MaxAlign> { 100 typedef uint64_t value_type; 101 typedef support::detail::packed_endian_specific_integral 102 <value_type, TargetEndianness, 103 MaximumAlignment<value_type, MaxAlign>::value> Elf_Addr; 104 typedef support::detail::packed_endian_specific_integral 105 <value_type, TargetEndianness, 106 MaximumAlignment<value_type, MaxAlign>::value> Elf_Off; 107}; 108 109// I really don't like doing this, but the alternative is copypasta. 110#define LLVM_ELF_IMPORT_TYPES(E, M, W) \ 111typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Addr Elf_Addr; \ 112typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Off Elf_Off; \ 113typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Half Elf_Half; \ 114typedef typename ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Word Elf_Word; \ 115typedef typename \ 116 ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Sword Elf_Sword; \ 117typedef typename \ 118 ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Xword Elf_Xword; \ 119typedef typename \ 120 ELFDataTypeTypedefHelper<ELFType<E,M,W> >::Elf_Sxword Elf_Sxword; 121 122#define LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) \ 123 LLVM_ELF_IMPORT_TYPES(ELFT::TargetEndianness, ELFT::MaxAlignment, \ 124 ELFT::Is64Bits) 125 126// Section header. 127template<class ELFT> 128struct Elf_Shdr_Base; 129 130template<endianness TargetEndianness, std::size_t MaxAlign> 131struct Elf_Shdr_Base<ELFType<TargetEndianness, MaxAlign, false> > { 132 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false) 133 Elf_Word sh_name; // Section name (index into string table) 134 Elf_Word sh_type; // Section type (SHT_*) 135 Elf_Word sh_flags; // Section flags (SHF_*) 136 Elf_Addr sh_addr; // Address where section is to be loaded 137 Elf_Off sh_offset; // File offset of section data, in bytes 138 Elf_Word sh_size; // Size of section, in bytes 139 Elf_Word sh_link; // Section type-specific header table index link 140 Elf_Word sh_info; // Section type-specific extra information 141 Elf_Word sh_addralign;// Section address alignment 142 Elf_Word sh_entsize; // Size of records contained within the section 143}; 144 145template<endianness TargetEndianness, std::size_t MaxAlign> 146struct Elf_Shdr_Base<ELFType<TargetEndianness, MaxAlign, true> > { 147 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true) 148 Elf_Word sh_name; // Section name (index into string table) 149 Elf_Word sh_type; // Section type (SHT_*) 150 Elf_Xword sh_flags; // Section flags (SHF_*) 151 Elf_Addr sh_addr; // Address where section is to be loaded 152 Elf_Off sh_offset; // File offset of section data, in bytes 153 Elf_Xword sh_size; // Size of section, in bytes 154 Elf_Word sh_link; // Section type-specific header table index link 155 Elf_Word sh_info; // Section type-specific extra information 156 Elf_Xword sh_addralign;// Section address alignment 157 Elf_Xword sh_entsize; // Size of records contained within the section 158}; 159 160template<class ELFT> 161struct Elf_Shdr_Impl : Elf_Shdr_Base<ELFT> { 162 using Elf_Shdr_Base<ELFT>::sh_entsize; 163 using Elf_Shdr_Base<ELFT>::sh_size; 164 165 /// @brief Get the number of entities this section contains if it has any. 166 unsigned getEntityCount() const { 167 if (sh_entsize == 0) 168 return 0; 169 return sh_size / sh_entsize; 170 } 171}; 172 173template<class ELFT> 174struct Elf_Sym_Base; 175 176template<endianness TargetEndianness, std::size_t MaxAlign> 177struct Elf_Sym_Base<ELFType<TargetEndianness, MaxAlign, false> > { 178 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false) 179 Elf_Word st_name; // Symbol name (index into string table) 180 Elf_Addr st_value; // Value or address associated with the symbol 181 Elf_Word st_size; // Size of the symbol 182 unsigned char st_info; // Symbol's type and binding attributes 183 unsigned char st_other; // Must be zero; reserved 184 Elf_Half st_shndx; // Which section (header table index) it's defined in 185}; 186 187template<endianness TargetEndianness, std::size_t MaxAlign> 188struct Elf_Sym_Base<ELFType<TargetEndianness, MaxAlign, true> > { 189 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true) 190 Elf_Word st_name; // Symbol name (index into string table) 191 unsigned char st_info; // Symbol's type and binding attributes 192 unsigned char st_other; // Must be zero; reserved 193 Elf_Half st_shndx; // Which section (header table index) it's defined in 194 Elf_Addr st_value; // Value or address associated with the symbol 195 Elf_Xword st_size; // Size of the symbol 196}; 197 198template<class ELFT> 199struct Elf_Sym_Impl : Elf_Sym_Base<ELFT> { 200 using Elf_Sym_Base<ELFT>::st_info; 201 202 // These accessors and mutators correspond to the ELF32_ST_BIND, 203 // ELF32_ST_TYPE, and ELF32_ST_INFO macros defined in the ELF specification: 204 unsigned char getBinding() const { return st_info >> 4; } 205 unsigned char getType() const { return st_info & 0x0f; } 206 void setBinding(unsigned char b) { setBindingAndType(b, getType()); } 207 void setType(unsigned char t) { setBindingAndType(getBinding(), t); } 208 void setBindingAndType(unsigned char b, unsigned char t) { 209 st_info = (b << 4) + (t & 0x0f); 210 } 211}; 212 213/// Elf_Versym: This is the structure of entries in the SHT_GNU_versym section 214/// (.gnu.version). This structure is identical for ELF32 and ELF64. 215template<class ELFT> 216struct Elf_Versym_Impl { 217 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) 218 Elf_Half vs_index; // Version index with flags (e.g. VERSYM_HIDDEN) 219}; 220 221template<class ELFT> 222struct Elf_Verdaux_Impl; 223 224/// Elf_Verdef: This is the structure of entries in the SHT_GNU_verdef section 225/// (.gnu.version_d). This structure is identical for ELF32 and ELF64. 226template<class ELFT> 227struct Elf_Verdef_Impl { 228 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) 229 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux; 230 Elf_Half vd_version; // Version of this structure (e.g. VER_DEF_CURRENT) 231 Elf_Half vd_flags; // Bitwise flags (VER_DEF_*) 232 Elf_Half vd_ndx; // Version index, used in .gnu.version entries 233 Elf_Half vd_cnt; // Number of Verdaux entries 234 Elf_Word vd_hash; // Hash of name 235 Elf_Word vd_aux; // Offset to the first Verdaux entry (in bytes) 236 Elf_Word vd_next; // Offset to the next Verdef entry (in bytes) 237 238 /// Get the first Verdaux entry for this Verdef. 239 const Elf_Verdaux *getAux() const { 240 return reinterpret_cast<const Elf_Verdaux*>((const char*)this + vd_aux); 241 } 242}; 243 244/// Elf_Verdaux: This is the structure of auxiliary data in the SHT_GNU_verdef 245/// section (.gnu.version_d). This structure is identical for ELF32 and ELF64. 246template<class ELFT> 247struct Elf_Verdaux_Impl { 248 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) 249 Elf_Word vda_name; // Version name (offset in string table) 250 Elf_Word vda_next; // Offset to next Verdaux entry (in bytes) 251}; 252 253/// Elf_Verneed: This is the structure of entries in the SHT_GNU_verneed 254/// section (.gnu.version_r). This structure is identical for ELF32 and ELF64. 255template<class ELFT> 256struct Elf_Verneed_Impl { 257 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) 258 Elf_Half vn_version; // Version of this structure (e.g. VER_NEED_CURRENT) 259 Elf_Half vn_cnt; // Number of associated Vernaux entries 260 Elf_Word vn_file; // Library name (string table offset) 261 Elf_Word vn_aux; // Offset to first Vernaux entry (in bytes) 262 Elf_Word vn_next; // Offset to next Verneed entry (in bytes) 263}; 264 265/// Elf_Vernaux: This is the structure of auxiliary data in SHT_GNU_verneed 266/// section (.gnu.version_r). This structure is identical for ELF32 and ELF64. 267template<class ELFT> 268struct Elf_Vernaux_Impl { 269 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) 270 Elf_Word vna_hash; // Hash of dependency name 271 Elf_Half vna_flags; // Bitwise Flags (VER_FLAG_*) 272 Elf_Half vna_other; // Version index, used in .gnu.version entries 273 Elf_Word vna_name; // Dependency name 274 Elf_Word vna_next; // Offset to next Vernaux entry (in bytes) 275}; 276 277/// Elf_Dyn_Base: This structure matches the form of entries in the dynamic 278/// table section (.dynamic) look like. 279template<class ELFT> 280struct Elf_Dyn_Base; 281 282template<endianness TargetEndianness, std::size_t MaxAlign> 283struct Elf_Dyn_Base<ELFType<TargetEndianness, MaxAlign, false> > { 284 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false) 285 Elf_Sword d_tag; 286 union { 287 Elf_Word d_val; 288 Elf_Addr d_ptr; 289 } d_un; 290}; 291 292template<endianness TargetEndianness, std::size_t MaxAlign> 293struct Elf_Dyn_Base<ELFType<TargetEndianness, MaxAlign, true> > { 294 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true) 295 Elf_Sxword d_tag; 296 union { 297 Elf_Xword d_val; 298 Elf_Addr d_ptr; 299 } d_un; 300}; 301 302/// Elf_Dyn_Impl: This inherits from Elf_Dyn_Base, adding getters and setters. 303template<class ELFT> 304struct Elf_Dyn_Impl : Elf_Dyn_Base<ELFT> { 305 using Elf_Dyn_Base<ELFT>::d_tag; 306 using Elf_Dyn_Base<ELFT>::d_un; 307 int64_t getTag() const { return d_tag; } 308 uint64_t getVal() const { return d_un.d_val; } 309 uint64_t getPtr() const { return d_un.ptr; } 310}; 311 312// Elf_Rel: Elf Relocation 313template<class ELFT, bool isRela> 314struct Elf_Rel_Base; 315 316template<endianness TargetEndianness, std::size_t MaxAlign> 317struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, false> { 318 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false) 319 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr) 320 Elf_Word r_info; // Symbol table index and type of relocation to apply 321 322 uint32_t getRInfo(bool isMips64EL) const { 323 assert(!isMips64EL); 324 return r_info; 325 } 326 void setRInfo(uint32_t R) { 327 r_info = R; 328 } 329}; 330 331template<endianness TargetEndianness, std::size_t MaxAlign> 332struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, false> { 333 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true) 334 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr) 335 Elf_Xword r_info; // Symbol table index and type of relocation to apply 336 337 uint64_t getRInfo(bool isMips64EL) const { 338 uint64_t t = r_info; 339 if (!isMips64EL) 340 return t; 341 // Mip64 little endian has a "special" encoding of r_info. Instead of one 342 // 64 bit little endian number, it is a little ending 32 bit number followed 343 // by a 32 bit big endian number. 344 return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) | 345 ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff); 346 return r_info; 347 } 348 void setRInfo(uint64_t R) { 349 // FIXME: Add mips64el support. 350 r_info = R; 351 } 352}; 353 354template<endianness TargetEndianness, std::size_t MaxAlign> 355struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, true> { 356 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false) 357 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr) 358 Elf_Word r_info; // Symbol table index and type of relocation to apply 359 Elf_Sword r_addend; // Compute value for relocatable field by adding this 360 361 uint32_t getRInfo(bool isMips64EL) const { 362 assert(!isMips64EL); 363 return r_info; 364 } 365 void setRInfo(uint32_t R) { 366 r_info = R; 367 } 368}; 369 370template<endianness TargetEndianness, std::size_t MaxAlign> 371struct Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, true> { 372 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true) 373 Elf_Addr r_offset; // Location (file byte offset, or program virtual addr) 374 Elf_Xword r_info; // Symbol table index and type of relocation to apply 375 Elf_Sxword r_addend; // Compute value for relocatable field by adding this. 376 377 uint64_t getRInfo(bool isMips64EL) const { 378 // Mip64 little endian has a "special" encoding of r_info. Instead of one 379 // 64 bit little endian number, it is a little ending 32 bit number followed 380 // by a 32 bit big endian number. 381 uint64_t t = r_info; 382 if (!isMips64EL) 383 return t; 384 return (t << 32) | ((t >> 8) & 0xff000000) | ((t >> 24) & 0x00ff0000) | 385 ((t >> 40) & 0x0000ff00) | ((t >> 56) & 0x000000ff); 386 } 387 void setRInfo(uint64_t R) { 388 // FIXME: Add mips64el support. 389 r_info = R; 390 } 391}; 392 393template<class ELFT, bool isRela> 394struct Elf_Rel_Impl; 395 396template<endianness TargetEndianness, std::size_t MaxAlign, bool isRela> 397struct Elf_Rel_Impl<ELFType<TargetEndianness, MaxAlign, true>, isRela> 398 : Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, true>, isRela> { 399 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true) 400 401 // These accessors and mutators correspond to the ELF64_R_SYM, ELF64_R_TYPE, 402 // and ELF64_R_INFO macros defined in the ELF specification: 403 uint32_t getSymbol(bool isMips64EL) const { 404 return (uint32_t) (this->getRInfo(isMips64EL) >> 32); 405 } 406 uint32_t getType(bool isMips64EL) const { 407 return (uint32_t) (this->getRInfo(isMips64EL) & 0xffffffffL); 408 } 409 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); } 410 void setType(uint32_t t) { setSymbolAndType(getSymbol(), t); } 411 void setSymbolAndType(uint32_t s, uint32_t t) { 412 this->setRInfo(((uint64_t)s << 32) + (t&0xffffffffL)); 413 } 414}; 415 416template<endianness TargetEndianness, std::size_t MaxAlign, bool isRela> 417struct Elf_Rel_Impl<ELFType<TargetEndianness, MaxAlign, false>, isRela> 418 : Elf_Rel_Base<ELFType<TargetEndianness, MaxAlign, false>, isRela> { 419 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false) 420 421 // These accessors and mutators correspond to the ELF32_R_SYM, ELF32_R_TYPE, 422 // and ELF32_R_INFO macros defined in the ELF specification: 423 uint32_t getSymbol(bool isMips64EL) const { 424 return this->getRInfo(isMips64EL) >> 8; 425 } 426 unsigned char getType(bool isMips64EL) const { 427 return (unsigned char) (this->getRInfo(isMips64EL) & 0x0ff); 428 } 429 void setSymbol(uint32_t s) { setSymbolAndType(s, getType()); } 430 void setType(unsigned char t) { setSymbolAndType(getSymbol(), t); } 431 void setSymbolAndType(uint32_t s, unsigned char t) { 432 this->setRInfo((s << 8) + t); 433 } 434}; 435 436template<class ELFT> 437struct Elf_Ehdr_Impl { 438 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) 439 unsigned char e_ident[ELF::EI_NIDENT]; // ELF Identification bytes 440 Elf_Half e_type; // Type of file (see ET_*) 441 Elf_Half e_machine; // Required architecture for this file (see EM_*) 442 Elf_Word e_version; // Must be equal to 1 443 Elf_Addr e_entry; // Address to jump to in order to start program 444 Elf_Off e_phoff; // Program header table's file offset, in bytes 445 Elf_Off e_shoff; // Section header table's file offset, in bytes 446 Elf_Word e_flags; // Processor-specific flags 447 Elf_Half e_ehsize; // Size of ELF header, in bytes 448 Elf_Half e_phentsize;// Size of an entry in the program header table 449 Elf_Half e_phnum; // Number of entries in the program header table 450 Elf_Half e_shentsize;// Size of an entry in the section header table 451 Elf_Half e_shnum; // Number of entries in the section header table 452 Elf_Half e_shstrndx; // Section header table index of section name 453 // string table 454 bool checkMagic() const { 455 return (memcmp(e_ident, ELF::ElfMagic, strlen(ELF::ElfMagic))) == 0; 456 } 457 unsigned char getFileClass() const { return e_ident[ELF::EI_CLASS]; } 458 unsigned char getDataEncoding() const { return e_ident[ELF::EI_DATA]; } 459}; 460 461template<class ELFT> 462struct Elf_Phdr_Impl; 463 464template<endianness TargetEndianness, std::size_t MaxAlign> 465struct Elf_Phdr_Impl<ELFType<TargetEndianness, MaxAlign, false> > { 466 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, false) 467 Elf_Word p_type; // Type of segment 468 Elf_Off p_offset; // FileOffset where segment is located, in bytes 469 Elf_Addr p_vaddr; // Virtual Address of beginning of segment 470 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 471 Elf_Word p_filesz; // Num. of bytes in file image of segment (may be zero) 472 Elf_Word p_memsz; // Num. of bytes in mem image of segment (may be zero) 473 Elf_Word p_flags; // Segment flags 474 Elf_Word p_align; // Segment alignment constraint 475}; 476 477template<endianness TargetEndianness, std::size_t MaxAlign> 478struct Elf_Phdr_Impl<ELFType<TargetEndianness, MaxAlign, true> > { 479 LLVM_ELF_IMPORT_TYPES(TargetEndianness, MaxAlign, true) 480 Elf_Word p_type; // Type of segment 481 Elf_Word p_flags; // Segment flags 482 Elf_Off p_offset; // FileOffset where segment is located, in bytes 483 Elf_Addr p_vaddr; // Virtual Address of beginning of segment 484 Elf_Addr p_paddr; // Physical address of beginning of segment (OS-specific) 485 Elf_Xword p_filesz; // Num. of bytes in file image of segment (may be zero) 486 Elf_Xword p_memsz; // Num. of bytes in mem image of segment (may be zero) 487 Elf_Xword p_align; // Segment alignment constraint 488}; 489 490template<class ELFT> 491class ELFObjectFile : public ObjectFile { 492 LLVM_ELF_IMPORT_TYPES_ELFT(ELFT) 493 494public: 495 /// \brief Iterate over constant sized entities. 496 template<class EntT> 497 class ELFEntityIterator { 498 public: 499 typedef ptrdiff_t difference_type; 500 typedef EntT value_type; 501 typedef std::random_access_iterator_tag iterator_category; 502 typedef value_type &reference; 503 typedef value_type *pointer; 504 505 /// \brief Default construct iterator. 506 ELFEntityIterator() : EntitySize(0), Current(0) {} 507 ELFEntityIterator(uint64_t EntSize, const char *Start) 508 : EntitySize(EntSize) 509 , Current(Start) {} 510 511 reference operator *() { 512 assert(Current && "Attempted to dereference an invalid iterator!"); 513 return *reinterpret_cast<pointer>(Current); 514 } 515 516 pointer operator ->() { 517 assert(Current && "Attempted to dereference an invalid iterator!"); 518 return reinterpret_cast<pointer>(Current); 519 } 520 521 bool operator ==(const ELFEntityIterator &Other) { 522 return Current == Other.Current; 523 } 524 525 bool operator !=(const ELFEntityIterator &Other) { 526 return !(*this == Other); 527 } 528 529 ELFEntityIterator &operator ++() { 530 assert(Current && "Attempted to increment an invalid iterator!"); 531 Current += EntitySize; 532 return *this; 533 } 534 535 ELFEntityIterator operator ++(int) { 536 ELFEntityIterator Tmp = *this; 537 ++*this; 538 return Tmp; 539 } 540 541 ELFEntityIterator &operator =(const ELFEntityIterator &Other) { 542 EntitySize = Other.EntitySize; 543 Current = Other.Current; 544 return *this; 545 } 546 547 difference_type operator -(const ELFEntityIterator &Other) const { 548 assert(EntitySize == Other.EntitySize && 549 "Subtracting iterators of different EntitiySize!"); 550 return (Current - Other.Current) / EntitySize; 551 } 552 553 const char *get() const { return Current; } 554 555 private: 556 uint64_t EntitySize; 557 const char *Current; 558 }; 559 560 typedef Elf_Ehdr_Impl<ELFT> Elf_Ehdr; 561 typedef Elf_Shdr_Impl<ELFT> Elf_Shdr; 562 typedef Elf_Sym_Impl<ELFT> Elf_Sym; 563 typedef Elf_Dyn_Impl<ELFT> Elf_Dyn; 564 typedef Elf_Phdr_Impl<ELFT> Elf_Phdr; 565 typedef Elf_Rel_Impl<ELFT, false> Elf_Rel; 566 typedef Elf_Rel_Impl<ELFT, true> Elf_Rela; 567 typedef Elf_Verdef_Impl<ELFT> Elf_Verdef; 568 typedef Elf_Verdaux_Impl<ELFT> Elf_Verdaux; 569 typedef Elf_Verneed_Impl<ELFT> Elf_Verneed; 570 typedef Elf_Vernaux_Impl<ELFT> Elf_Vernaux; 571 typedef Elf_Versym_Impl<ELFT> Elf_Versym; 572 typedef ELFEntityIterator<const Elf_Dyn> Elf_Dyn_iterator; 573 typedef ELFEntityIterator<const Elf_Sym> Elf_Sym_iterator; 574 typedef ELFEntityIterator<const Elf_Rela> Elf_Rela_Iter; 575 typedef ELFEntityIterator<const Elf_Rel> Elf_Rel_Iter; 576 577protected: 578 // This flag is used for classof, to distinguish ELFObjectFile from 579 // its subclass. If more subclasses will be created, this flag will 580 // have to become an enum. 581 bool isDyldELFObject; 582 583private: 584 typedef SmallVector<const Elf_Shdr *, 2> Sections_t; 585 typedef DenseMap<unsigned, unsigned> IndexMap_t; 586 typedef DenseMap<const Elf_Shdr*, SmallVector<uint32_t, 1> > RelocMap_t; 587 588 const Elf_Ehdr *Header; 589 const Elf_Shdr *SectionHeaderTable; 590 const Elf_Shdr *dot_shstrtab_sec; // Section header string table. 591 const Elf_Shdr *dot_strtab_sec; // Symbol header string table. 592 const Elf_Shdr *dot_dynstr_sec; // Dynamic symbol string table. 593 594 // SymbolTableSections[0] always points to the dynamic string table section 595 // header, or NULL if there is no dynamic string table. 596 Sections_t SymbolTableSections; 597 IndexMap_t SymbolTableSectionsIndexMap; 598 DenseMap<const Elf_Sym*, ELF::Elf64_Word> ExtendedSymbolTable; 599 600 const Elf_Shdr *dot_dynamic_sec; // .dynamic 601 const Elf_Shdr *dot_gnu_version_sec; // .gnu.version 602 const Elf_Shdr *dot_gnu_version_r_sec; // .gnu.version_r 603 const Elf_Shdr *dot_gnu_version_d_sec; // .gnu.version_d 604 605 // Pointer to SONAME entry in dynamic string table 606 // This is set the first time getLoadName is called. 607 mutable const char *dt_soname; 608 609private: 610 uint64_t getROffset(DataRefImpl Rel) const; 611 612 // Records for each version index the corresponding Verdef or Vernaux entry. 613 // This is filled the first time LoadVersionMap() is called. 614 class VersionMapEntry : public PointerIntPair<const void*, 1> { 615 public: 616 // If the integer is 0, this is an Elf_Verdef*. 617 // If the integer is 1, this is an Elf_Vernaux*. 618 VersionMapEntry() : PointerIntPair<const void*, 1>(NULL, 0) { } 619 VersionMapEntry(const Elf_Verdef *verdef) 620 : PointerIntPair<const void*, 1>(verdef, 0) { } 621 VersionMapEntry(const Elf_Vernaux *vernaux) 622 : PointerIntPair<const void*, 1>(vernaux, 1) { } 623 bool isNull() const { return getPointer() == NULL; } 624 bool isVerdef() const { return !isNull() && getInt() == 0; } 625 bool isVernaux() const { return !isNull() && getInt() == 1; } 626 const Elf_Verdef *getVerdef() const { 627 return isVerdef() ? (const Elf_Verdef*)getPointer() : NULL; 628 } 629 const Elf_Vernaux *getVernaux() const { 630 return isVernaux() ? (const Elf_Vernaux*)getPointer() : NULL; 631 } 632 }; 633 mutable SmallVector<VersionMapEntry, 16> VersionMap; 634 void LoadVersionDefs(const Elf_Shdr *sec) const; 635 void LoadVersionNeeds(const Elf_Shdr *ec) const; 636 void LoadVersionMap() const; 637 638 /// @brief Map sections to an array of relocation sections that reference 639 /// them sorted by section index. 640 RelocMap_t SectionRelocMap; 641 642 /// @brief Get the relocation section that contains \a Rel. 643 const Elf_Shdr *getRelSection(DataRefImpl Rel) const { 644 return getSection(Rel.w.b); 645 } 646 647public: 648 bool isRelocationHasAddend(DataRefImpl Rel) const; 649 template<typename T> 650 const T *getEntry(uint16_t Section, uint32_t Entry) const; 651 template<typename T> 652 const T *getEntry(const Elf_Shdr *Section, uint32_t Entry) const; 653 const Elf_Shdr *getSection(DataRefImpl index) const; 654 const Elf_Shdr *getSection(uint32_t index) const; 655 const Elf_Rel *getRel(DataRefImpl Rel) const; 656 const Elf_Rela *getRela(DataRefImpl Rela) const; 657 const char *getString(uint32_t section, uint32_t offset) const; 658 const char *getString(const Elf_Shdr *section, uint32_t offset) const; 659 error_code getSymbolVersion(const Elf_Shdr *section, 660 const Elf_Sym *Symb, 661 StringRef &Version, 662 bool &IsDefault) const; 663 void VerifyStrTab(const Elf_Shdr *sh) const; 664 665protected: 666 const Elf_Sym *getSymbol(DataRefImpl Symb) const; // FIXME: Should be private? 667 void validateSymbol(DataRefImpl Symb) const; 668 StringRef getRelocationTypeName(uint32_t Type) const; 669 670public: 671 error_code getSymbolName(const Elf_Shdr *section, 672 const Elf_Sym *Symb, 673 StringRef &Res) const; 674 error_code getSectionName(const Elf_Shdr *section, 675 StringRef &Res) const; 676 const Elf_Dyn *getDyn(DataRefImpl DynData) const; 677 error_code getSymbolVersion(SymbolRef Symb, StringRef &Version, 678 bool &IsDefault) const; 679 uint64_t getSymbolIndex(const Elf_Sym *sym) const; 680protected: 681 virtual error_code getSymbolNext(DataRefImpl Symb, SymbolRef &Res) const; 682 virtual error_code getSymbolName(DataRefImpl Symb, StringRef &Res) const; 683 virtual error_code getSymbolFileOffset(DataRefImpl Symb, uint64_t &Res) const; 684 virtual error_code getSymbolAddress(DataRefImpl Symb, uint64_t &Res) const; 685 virtual error_code getSymbolAlignment(DataRefImpl Symb, uint32_t &Res) const; 686 virtual error_code getSymbolSize(DataRefImpl Symb, uint64_t &Res) const; 687 virtual error_code getSymbolNMTypeChar(DataRefImpl Symb, char &Res) const; 688 virtual error_code getSymbolFlags(DataRefImpl Symb, uint32_t &Res) const; 689 virtual error_code getSymbolType(DataRefImpl Symb, SymbolRef::Type &Res) const; 690 virtual error_code getSymbolSection(DataRefImpl Symb, 691 section_iterator &Res) const; 692 virtual error_code getSymbolValue(DataRefImpl Symb, uint64_t &Val) const; 693 694 virtual error_code getLibraryNext(DataRefImpl Data, LibraryRef &Result) const; 695 virtual error_code getLibraryPath(DataRefImpl Data, StringRef &Res) const; 696 697 virtual error_code getSectionNext(DataRefImpl Sec, SectionRef &Res) const; 698 virtual error_code getSectionName(DataRefImpl Sec, StringRef &Res) const; 699 virtual error_code getSectionAddress(DataRefImpl Sec, uint64_t &Res) const; 700 virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const; 701 virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const; 702 virtual error_code getSectionAlignment(DataRefImpl Sec, uint64_t &Res) const; 703 virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const; 704 virtual error_code isSectionData(DataRefImpl Sec, bool &Res) const; 705 virtual error_code isSectionBSS(DataRefImpl Sec, bool &Res) const; 706 virtual error_code isSectionRequiredForExecution(DataRefImpl Sec, 707 bool &Res) const; 708 virtual error_code isSectionVirtual(DataRefImpl Sec, bool &Res) const; 709 virtual error_code isSectionZeroInit(DataRefImpl Sec, bool &Res) const; 710 virtual error_code isSectionReadOnlyData(DataRefImpl Sec, bool &Res) const; 711 virtual error_code sectionContainsSymbol(DataRefImpl Sec, DataRefImpl Symb, 712 bool &Result) const; 713 virtual relocation_iterator getSectionRelBegin(DataRefImpl Sec) const; 714 virtual relocation_iterator getSectionRelEnd(DataRefImpl Sec) const; 715 716 virtual error_code getRelocationNext(DataRefImpl Rel, 717 RelocationRef &Res) const; 718 virtual error_code getRelocationAddress(DataRefImpl Rel, 719 uint64_t &Res) const; 720 virtual error_code getRelocationOffset(DataRefImpl Rel, 721 uint64_t &Res) const; 722 virtual error_code getRelocationSymbol(DataRefImpl Rel, 723 SymbolRef &Res) const; 724 virtual error_code getRelocationType(DataRefImpl Rel, 725 uint64_t &Res) const; 726 virtual error_code getRelocationTypeName(DataRefImpl Rel, 727 SmallVectorImpl<char> &Result) const; 728 virtual error_code getRelocationAdditionalInfo(DataRefImpl Rel, 729 int64_t &Res) const; 730 virtual error_code getRelocationValueString(DataRefImpl Rel, 731 SmallVectorImpl<char> &Result) const; 732 733public: 734 ELFObjectFile(MemoryBuffer *Object, error_code &ec); 735 736 bool isMips64EL() const { 737 return Header->e_machine == ELF::EM_MIPS && 738 Header->getFileClass() == ELF::ELFCLASS64 && 739 Header->getDataEncoding() == ELF::ELFDATA2LSB; 740 } 741 742 virtual symbol_iterator begin_symbols() const; 743 virtual symbol_iterator end_symbols() const; 744 745 virtual symbol_iterator begin_dynamic_symbols() const; 746 virtual symbol_iterator end_dynamic_symbols() const; 747 748 virtual section_iterator begin_sections() const; 749 virtual section_iterator end_sections() const; 750 751 virtual library_iterator begin_libraries_needed() const; 752 virtual library_iterator end_libraries_needed() const; 753 754 const Elf_Shdr *getDynamicSymbolTableSectionHeader() const { 755 return SymbolTableSections[0]; 756 } 757 758 const Elf_Shdr *getDynamicStringTableSectionHeader() const { 759 return dot_dynstr_sec; 760 } 761 762 Elf_Dyn_iterator begin_dynamic_table() const; 763 /// \param NULLEnd use one past the first DT_NULL entry as the end instead of 764 /// the section size. 765 Elf_Dyn_iterator end_dynamic_table(bool NULLEnd = false) const; 766 767 Elf_Sym_iterator begin_elf_dynamic_symbols() const { 768 const Elf_Shdr *DynSymtab = SymbolTableSections[0]; 769 if (DynSymtab) 770 return Elf_Sym_iterator(DynSymtab->sh_entsize, 771 (const char *)base() + DynSymtab->sh_offset); 772 return Elf_Sym_iterator(0, 0); 773 } 774 775 Elf_Sym_iterator end_elf_dynamic_symbols() const { 776 const Elf_Shdr *DynSymtab = SymbolTableSections[0]; 777 if (DynSymtab) 778 return Elf_Sym_iterator(DynSymtab->sh_entsize, (const char *)base() + 779 DynSymtab->sh_offset + DynSymtab->sh_size); 780 return Elf_Sym_iterator(0, 0); 781 } 782 783 Elf_Rela_Iter beginELFRela(const Elf_Shdr *sec) const { 784 return Elf_Rela_Iter(sec->sh_entsize, 785 (const char *)(base() + sec->sh_offset)); 786 } 787 788 Elf_Rela_Iter endELFRela(const Elf_Shdr *sec) const { 789 return Elf_Rela_Iter(sec->sh_entsize, (const char *) 790 (base() + sec->sh_offset + sec->sh_size)); 791 } 792 793 Elf_Rel_Iter beginELFRel(const Elf_Shdr *sec) const { 794 return Elf_Rel_Iter(sec->sh_entsize, 795 (const char *)(base() + sec->sh_offset)); 796 } 797 798 Elf_Rel_Iter endELFRel(const Elf_Shdr *sec) const { 799 return Elf_Rel_Iter(sec->sh_entsize, (const char *) 800 (base() + sec->sh_offset + sec->sh_size)); 801 } 802 803 /// \brief Iterate over program header table. 804 typedef ELFEntityIterator<const Elf_Phdr> Elf_Phdr_Iter; 805 806 Elf_Phdr_Iter begin_program_headers() const { 807 return Elf_Phdr_Iter(Header->e_phentsize, 808 (const char*)base() + Header->e_phoff); 809 } 810 811 Elf_Phdr_Iter end_program_headers() const { 812 return Elf_Phdr_Iter(Header->e_phentsize, 813 (const char*)base() + 814 Header->e_phoff + 815 (Header->e_phnum * Header->e_phentsize)); 816 } 817 818 virtual uint8_t getBytesInAddress() const; 819 virtual StringRef getFileFormatName() const; 820 virtual StringRef getObjectType() const { return "ELF"; } 821 virtual unsigned getArch() const; 822 virtual StringRef getLoadName() const; 823 virtual error_code getSectionContents(const Elf_Shdr *sec, 824 StringRef &Res) const; 825 826 uint64_t getNumSections() const; 827 uint64_t getStringTableIndex() const; 828 ELF::Elf64_Word getSymbolTableIndex(const Elf_Sym *symb) const; 829 const Elf_Ehdr *getElfHeader() const; 830 const Elf_Shdr *getSection(const Elf_Sym *symb) const; 831 const Elf_Shdr *getElfSection(section_iterator &It) const; 832 const Elf_Sym *getElfSymbol(symbol_iterator &It) const; 833 const Elf_Sym *getElfSymbol(uint32_t index) const; 834 835 // Methods for type inquiry through isa, cast, and dyn_cast 836 bool isDyldType() const { return isDyldELFObject; } 837 static inline bool classof(const Binary *v) { 838 return v->getType() == getELFType(ELFT::TargetEndianness == support::little, 839 ELFT::Is64Bits); 840 } 841}; 842 843// Iterate through the version definitions, and place each Elf_Verdef 844// in the VersionMap according to its index. 845template<class ELFT> 846void ELFObjectFile<ELFT>::LoadVersionDefs(const Elf_Shdr *sec) const { 847 unsigned vd_size = sec->sh_size; // Size of section in bytes 848 unsigned vd_count = sec->sh_info; // Number of Verdef entries 849 const char *sec_start = (const char*)base() + sec->sh_offset; 850 const char *sec_end = sec_start + vd_size; 851 // The first Verdef entry is at the start of the section. 852 const char *p = sec_start; 853 for (unsigned i = 0; i < vd_count; i++) { 854 if (p + sizeof(Elf_Verdef) > sec_end) 855 report_fatal_error("Section ended unexpectedly while scanning " 856 "version definitions."); 857 const Elf_Verdef *vd = reinterpret_cast<const Elf_Verdef *>(p); 858 if (vd->vd_version != ELF::VER_DEF_CURRENT) 859 report_fatal_error("Unexpected verdef version"); 860 size_t index = vd->vd_ndx & ELF::VERSYM_VERSION; 861 if (index >= VersionMap.size()) 862 VersionMap.resize(index+1); 863 VersionMap[index] = VersionMapEntry(vd); 864 p += vd->vd_next; 865 } 866} 867 868// Iterate through the versions needed section, and place each Elf_Vernaux 869// in the VersionMap according to its index. 870template<class ELFT> 871void ELFObjectFile<ELFT>::LoadVersionNeeds(const Elf_Shdr *sec) const { 872 unsigned vn_size = sec->sh_size; // Size of section in bytes 873 unsigned vn_count = sec->sh_info; // Number of Verneed entries 874 const char *sec_start = (const char*)base() + sec->sh_offset; 875 const char *sec_end = sec_start + vn_size; 876 // The first Verneed entry is at the start of the section. 877 const char *p = sec_start; 878 for (unsigned i = 0; i < vn_count; i++) { 879 if (p + sizeof(Elf_Verneed) > sec_end) 880 report_fatal_error("Section ended unexpectedly while scanning " 881 "version needed records."); 882 const Elf_Verneed *vn = reinterpret_cast<const Elf_Verneed *>(p); 883 if (vn->vn_version != ELF::VER_NEED_CURRENT) 884 report_fatal_error("Unexpected verneed version"); 885 // Iterate through the Vernaux entries 886 const char *paux = p + vn->vn_aux; 887 for (unsigned j = 0; j < vn->vn_cnt; j++) { 888 if (paux + sizeof(Elf_Vernaux) > sec_end) 889 report_fatal_error("Section ended unexpected while scanning auxiliary " 890 "version needed records."); 891 const Elf_Vernaux *vna = reinterpret_cast<const Elf_Vernaux *>(paux); 892 size_t index = vna->vna_other & ELF::VERSYM_VERSION; 893 if (index >= VersionMap.size()) 894 VersionMap.resize(index+1); 895 VersionMap[index] = VersionMapEntry(vna); 896 paux += vna->vna_next; 897 } 898 p += vn->vn_next; 899 } 900} 901 902template<class ELFT> 903void ELFObjectFile<ELFT>::LoadVersionMap() const { 904 // If there is no dynamic symtab or version table, there is nothing to do. 905 if (SymbolTableSections[0] == NULL || dot_gnu_version_sec == NULL) 906 return; 907 908 // Has the VersionMap already been loaded? 909 if (VersionMap.size() > 0) 910 return; 911 912 // The first two version indexes are reserved. 913 // Index 0 is LOCAL, index 1 is GLOBAL. 914 VersionMap.push_back(VersionMapEntry()); 915 VersionMap.push_back(VersionMapEntry()); 916 917 if (dot_gnu_version_d_sec) 918 LoadVersionDefs(dot_gnu_version_d_sec); 919 920 if (dot_gnu_version_r_sec) 921 LoadVersionNeeds(dot_gnu_version_r_sec); 922} 923 924template<class ELFT> 925void ELFObjectFile<ELFT>::validateSymbol(DataRefImpl Symb) const { 926#ifndef NDEBUG 927 const Elf_Sym *symb = getSymbol(Symb); 928 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b]; 929 // FIXME: We really need to do proper error handling in the case of an invalid 930 // input file. Because we don't use exceptions, I think we'll just pass 931 // an error object around. 932 if (!( symb 933 && SymbolTableSection 934 && symb >= (const Elf_Sym*)(base() 935 + SymbolTableSection->sh_offset) 936 && symb < (const Elf_Sym*)(base() 937 + SymbolTableSection->sh_offset 938 + SymbolTableSection->sh_size))) 939 // FIXME: Proper error handling. 940 report_fatal_error("Symb must point to a valid symbol!"); 941#endif 942} 943 944template<class ELFT> 945error_code ELFObjectFile<ELFT>::getSymbolNext(DataRefImpl Symb, 946 SymbolRef &Result) const { 947 validateSymbol(Symb); 948 const Elf_Shdr *SymbolTableSection = SymbolTableSections[Symb.d.b]; 949 950 ++Symb.d.a; 951 // Check to see if we are at the end of this symbol table. 952 if (Symb.d.a >= SymbolTableSection->getEntityCount()) { 953 // We are at the end. If there are other symbol tables, jump to them. 954 // If the symbol table is .dynsym, we are iterating dynamic symbols, 955 // and there is only one table of these. 956 if (Symb.d.b != 0) { 957 ++Symb.d.b; 958 Symb.d.a = 1; // The 0th symbol in ELF is fake. 959 } 960 // Otherwise return the terminator. 961 if (Symb.d.b == 0 || Symb.d.b >= SymbolTableSections.size()) { 962 Symb.d.a = std::numeric_limits<uint32_t>::max(); 963 Symb.d.b = std::numeric_limits<uint32_t>::max(); 964 } 965 } 966 967 Result = SymbolRef(Symb, this); 968 return object_error::success; 969} 970 971template<class ELFT> 972error_code ELFObjectFile<ELFT>::getSymbolName(DataRefImpl Symb, 973 StringRef &Result) const { 974 validateSymbol(Symb); 975 const Elf_Sym *symb = getSymbol(Symb); 976 return getSymbolName(SymbolTableSections[Symb.d.b], symb, Result); 977} 978 979template<class ELFT> 980error_code ELFObjectFile<ELFT>::getSymbolVersion(SymbolRef SymRef, 981 StringRef &Version, 982 bool &IsDefault) const { 983 DataRefImpl Symb = SymRef.getRawDataRefImpl(); 984 validateSymbol(Symb); 985 const Elf_Sym *symb = getSymbol(Symb); 986 return getSymbolVersion(SymbolTableSections[Symb.d.b], symb, 987 Version, IsDefault); 988} 989 990template<class ELFT> 991ELF::Elf64_Word ELFObjectFile<ELFT> 992 ::getSymbolTableIndex(const Elf_Sym *symb) const { 993 if (symb->st_shndx == ELF::SHN_XINDEX) 994 return ExtendedSymbolTable.lookup(symb); 995 return symb->st_shndx; 996} 997 998template<class ELFT> 999const typename ELFObjectFile<ELFT>::Elf_Shdr * 1000ELFObjectFile<ELFT>::getSection(const Elf_Sym *symb) const { 1001 if (symb->st_shndx == ELF::SHN_XINDEX) 1002 return getSection(ExtendedSymbolTable.lookup(symb)); 1003 if (symb->st_shndx >= ELF::SHN_LORESERVE) 1004 return 0; 1005 return getSection(symb->st_shndx); 1006} 1007 1008template<class ELFT> 1009const typename ELFObjectFile<ELFT>::Elf_Ehdr * 1010ELFObjectFile<ELFT>::getElfHeader() const { 1011 return Header; 1012} 1013 1014template<class ELFT> 1015const typename ELFObjectFile<ELFT>::Elf_Shdr * 1016ELFObjectFile<ELFT>::getElfSection(section_iterator &It) const { 1017 llvm::object::DataRefImpl ShdrRef = It->getRawDataRefImpl(); 1018 return reinterpret_cast<const Elf_Shdr *>(ShdrRef.p); 1019} 1020 1021template<class ELFT> 1022const typename ELFObjectFile<ELFT>::Elf_Sym * 1023ELFObjectFile<ELFT>::getElfSymbol(symbol_iterator &It) const { 1024 return getSymbol(It->getRawDataRefImpl()); 1025} 1026 1027template<class ELFT> 1028const typename ELFObjectFile<ELFT>::Elf_Sym * 1029ELFObjectFile<ELFT>::getElfSymbol(uint32_t index) const { 1030 DataRefImpl SymbolData; 1031 SymbolData.d.a = index; 1032 SymbolData.d.b = 1; 1033 return getSymbol(SymbolData); 1034} 1035 1036template<class ELFT> 1037error_code ELFObjectFile<ELFT>::getSymbolFileOffset(DataRefImpl Symb, 1038 uint64_t &Result) const { 1039 validateSymbol(Symb); 1040 const Elf_Sym *symb = getSymbol(Symb); 1041 const Elf_Shdr *Section; 1042 switch (getSymbolTableIndex(symb)) { 1043 case ELF::SHN_COMMON: 1044 // Unintialized symbols have no offset in the object file 1045 case ELF::SHN_UNDEF: 1046 Result = UnknownAddressOrSize; 1047 return object_error::success; 1048 case ELF::SHN_ABS: 1049 Result = symb->st_value; 1050 return object_error::success; 1051 default: Section = getSection(symb); 1052 } 1053 1054 switch (symb->getType()) { 1055 case ELF::STT_SECTION: 1056 Result = Section ? Section->sh_offset : UnknownAddressOrSize; 1057 return object_error::success; 1058 case ELF::STT_FUNC: 1059 case ELF::STT_OBJECT: 1060 case ELF::STT_NOTYPE: 1061 Result = symb->st_value + 1062 (Section ? Section->sh_offset : 0); 1063 return object_error::success; 1064 default: 1065 Result = UnknownAddressOrSize; 1066 return object_error::success; 1067 } 1068} 1069 1070template<class ELFT> 1071error_code ELFObjectFile<ELFT>::getSymbolAddress(DataRefImpl Symb, 1072 uint64_t &Result) const { 1073 validateSymbol(Symb); 1074 const Elf_Sym *symb = getSymbol(Symb); 1075 const Elf_Shdr *Section; 1076 switch (getSymbolTableIndex(symb)) { 1077 case ELF::SHN_COMMON: 1078 case ELF::SHN_UNDEF: 1079 Result = UnknownAddressOrSize; 1080 return object_error::success; 1081 case ELF::SHN_ABS: 1082 Result = symb->st_value; 1083 return object_error::success; 1084 default: Section = getSection(symb); 1085 } 1086 1087 switch (symb->getType()) { 1088 case ELF::STT_SECTION: 1089 Result = Section ? Section->sh_addr : UnknownAddressOrSize; 1090 return object_error::success; 1091 case ELF::STT_FUNC: 1092 case ELF::STT_OBJECT: 1093 case ELF::STT_NOTYPE: 1094 bool IsRelocatable; 1095 switch(Header->e_type) { 1096 case ELF::ET_EXEC: 1097 case ELF::ET_DYN: 1098 IsRelocatable = false; 1099 break; 1100 default: 1101 IsRelocatable = true; 1102 } 1103 Result = symb->st_value; 1104 1105 // Clear the ARM/Thumb indicator flag. 1106 if (Header->e_machine == ELF::EM_ARM) 1107 Result &= ~1; 1108 1109 if (IsRelocatable && Section != 0) 1110 Result += Section->sh_addr; 1111 return object_error::success; 1112 default: 1113 Result = UnknownAddressOrSize; 1114 return object_error::success; 1115 } 1116} 1117 1118template<class ELFT> 1119error_code ELFObjectFile<ELFT>::getSymbolAlignment(DataRefImpl Symb, 1120 uint32_t &Res) const { 1121 uint32_t flags; 1122 getSymbolFlags(Symb, flags); 1123 if (flags & SymbolRef::SF_Common) { 1124 uint64_t Value; 1125 getSymbolValue(Symb, Value); 1126 Res = Value; 1127 } else { 1128 Res = 0; 1129 } 1130 return object_error::success; 1131} 1132 1133template<class ELFT> 1134error_code ELFObjectFile<ELFT>::getSymbolSize(DataRefImpl Symb, 1135 uint64_t &Result) const { 1136 validateSymbol(Symb); 1137 const Elf_Sym *symb = getSymbol(Symb); 1138 if (symb->st_size == 0) 1139 Result = UnknownAddressOrSize; 1140 Result = symb->st_size; 1141 return object_error::success; 1142} 1143 1144template<class ELFT> 1145error_code ELFObjectFile<ELFT>::getSymbolNMTypeChar(DataRefImpl Symb, 1146 char &Result) const { 1147 validateSymbol(Symb); 1148 const Elf_Sym *symb = getSymbol(Symb); 1149 const Elf_Shdr *Section = getSection(symb); 1150 1151 char ret = '?'; 1152 1153 if (Section) { 1154 switch (Section->sh_type) { 1155 case ELF::SHT_PROGBITS: 1156 case ELF::SHT_DYNAMIC: 1157 switch (Section->sh_flags) { 1158 case (ELF::SHF_ALLOC | ELF::SHF_EXECINSTR): 1159 ret = 't'; break; 1160 case (ELF::SHF_ALLOC | ELF::SHF_WRITE): 1161 ret = 'd'; break; 1162 case ELF::SHF_ALLOC: 1163 case (ELF::SHF_ALLOC | ELF::SHF_MERGE): 1164 case (ELF::SHF_ALLOC | ELF::SHF_MERGE | ELF::SHF_STRINGS): 1165 ret = 'r'; break; 1166 } 1167 break; 1168 case ELF::SHT_NOBITS: ret = 'b'; 1169 } 1170 } 1171 1172 switch (getSymbolTableIndex(symb)) { 1173 case ELF::SHN_UNDEF: 1174 if (ret == '?') 1175 ret = 'U'; 1176 break; 1177 case ELF::SHN_ABS: ret = 'a'; break; 1178 case ELF::SHN_COMMON: ret = 'c'; break; 1179 } 1180 1181 switch (symb->getBinding()) { 1182 case ELF::STB_GLOBAL: ret = ::toupper(ret); break; 1183 case ELF::STB_WEAK: 1184 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF) 1185 ret = 'w'; 1186 else 1187 if (symb->getType() == ELF::STT_OBJECT) 1188 ret = 'V'; 1189 else 1190 ret = 'W'; 1191 } 1192 1193 if (ret == '?' && symb->getType() == ELF::STT_SECTION) { 1194 StringRef name; 1195 if (error_code ec = getSymbolName(Symb, name)) 1196 return ec; 1197 Result = StringSwitch<char>(name) 1198 .StartsWith(".debug", 'N') 1199 .StartsWith(".note", 'n') 1200 .Default('?'); 1201 return object_error::success; 1202 } 1203 1204 Result = ret; 1205 return object_error::success; 1206} 1207 1208template<class ELFT> 1209error_code ELFObjectFile<ELFT>::getSymbolType(DataRefImpl Symb, 1210 SymbolRef::Type &Result) const { 1211 validateSymbol(Symb); 1212 const Elf_Sym *symb = getSymbol(Symb); 1213 1214 switch (symb->getType()) { 1215 case ELF::STT_NOTYPE: 1216 Result = SymbolRef::ST_Unknown; 1217 break; 1218 case ELF::STT_SECTION: 1219 Result = SymbolRef::ST_Debug; 1220 break; 1221 case ELF::STT_FILE: 1222 Result = SymbolRef::ST_File; 1223 break; 1224 case ELF::STT_FUNC: 1225 Result = SymbolRef::ST_Function; 1226 break; 1227 case ELF::STT_OBJECT: 1228 case ELF::STT_COMMON: 1229 case ELF::STT_TLS: 1230 Result = SymbolRef::ST_Data; 1231 break; 1232 default: 1233 Result = SymbolRef::ST_Other; 1234 break; 1235 } 1236 return object_error::success; 1237} 1238 1239template<class ELFT> 1240error_code ELFObjectFile<ELFT>::getSymbolFlags(DataRefImpl Symb, 1241 uint32_t &Result) const { 1242 validateSymbol(Symb); 1243 const Elf_Sym *symb = getSymbol(Symb); 1244 1245 Result = SymbolRef::SF_None; 1246 1247 if (symb->getBinding() != ELF::STB_LOCAL) 1248 Result |= SymbolRef::SF_Global; 1249 1250 if (symb->getBinding() == ELF::STB_WEAK) 1251 Result |= SymbolRef::SF_Weak; 1252 1253 if (symb->st_shndx == ELF::SHN_ABS) 1254 Result |= SymbolRef::SF_Absolute; 1255 1256 if (symb->getType() == ELF::STT_FILE || 1257 symb->getType() == ELF::STT_SECTION) 1258 Result |= SymbolRef::SF_FormatSpecific; 1259 1260 if (getSymbolTableIndex(symb) == ELF::SHN_UNDEF) 1261 Result |= SymbolRef::SF_Undefined; 1262 1263 if (symb->getType() == ELF::STT_COMMON || 1264 getSymbolTableIndex(symb) == ELF::SHN_COMMON) 1265 Result |= SymbolRef::SF_Common; 1266 1267 if (symb->getType() == ELF::STT_TLS) 1268 Result |= SymbolRef::SF_ThreadLocal; 1269 1270 return object_error::success; 1271} 1272 1273template<class ELFT> 1274error_code ELFObjectFile<ELFT>::getSymbolSection(DataRefImpl Symb, 1275 section_iterator &Res) const { 1276 validateSymbol(Symb); 1277 const Elf_Sym *symb = getSymbol(Symb); 1278 const Elf_Shdr *sec = getSection(symb); 1279 if (!sec) 1280 Res = end_sections(); 1281 else { 1282 DataRefImpl Sec; 1283 Sec.p = reinterpret_cast<intptr_t>(sec); 1284 Res = section_iterator(SectionRef(Sec, this)); 1285 } 1286 return object_error::success; 1287} 1288 1289template<class ELFT> 1290error_code ELFObjectFile<ELFT>::getSymbolValue(DataRefImpl Symb, 1291 uint64_t &Val) const { 1292 validateSymbol(Symb); 1293 const Elf_Sym *symb = getSymbol(Symb); 1294 Val = symb->st_value; 1295 return object_error::success; 1296} 1297 1298template<class ELFT> 1299error_code ELFObjectFile<ELFT>::getSectionNext(DataRefImpl Sec, 1300 SectionRef &Result) const { 1301 const uint8_t *sec = reinterpret_cast<const uint8_t *>(Sec.p); 1302 sec += Header->e_shentsize; 1303 Sec.p = reinterpret_cast<intptr_t>(sec); 1304 Result = SectionRef(Sec, this); 1305 return object_error::success; 1306} 1307 1308template<class ELFT> 1309error_code ELFObjectFile<ELFT>::getSectionName(DataRefImpl Sec, 1310 StringRef &Result) const { 1311 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1312 Result = StringRef(getString(dot_shstrtab_sec, sec->sh_name)); 1313 return object_error::success; 1314} 1315 1316template<class ELFT> 1317error_code ELFObjectFile<ELFT>::getSectionAddress(DataRefImpl Sec, 1318 uint64_t &Result) const { 1319 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1320 Result = sec->sh_addr; 1321 return object_error::success; 1322} 1323 1324template<class ELFT> 1325error_code ELFObjectFile<ELFT>::getSectionSize(DataRefImpl Sec, 1326 uint64_t &Result) const { 1327 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1328 Result = sec->sh_size; 1329 return object_error::success; 1330} 1331 1332template<class ELFT> 1333error_code ELFObjectFile<ELFT>::getSectionContents(DataRefImpl Sec, 1334 StringRef &Result) const { 1335 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1336 const char *start = (const char*)base() + sec->sh_offset; 1337 Result = StringRef(start, sec->sh_size); 1338 return object_error::success; 1339} 1340 1341template<class ELFT> 1342error_code ELFObjectFile<ELFT>::getSectionContents(const Elf_Shdr *Sec, 1343 StringRef &Result) const { 1344 const char *start = (const char*)base() + Sec->sh_offset; 1345 Result = StringRef(start, Sec->sh_size); 1346 return object_error::success; 1347} 1348 1349template<class ELFT> 1350error_code ELFObjectFile<ELFT>::getSectionAlignment(DataRefImpl Sec, 1351 uint64_t &Result) const { 1352 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1353 Result = sec->sh_addralign; 1354 return object_error::success; 1355} 1356 1357template<class ELFT> 1358error_code ELFObjectFile<ELFT>::isSectionText(DataRefImpl Sec, 1359 bool &Result) const { 1360 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1361 if (sec->sh_flags & ELF::SHF_EXECINSTR) 1362 Result = true; 1363 else 1364 Result = false; 1365 return object_error::success; 1366} 1367 1368template<class ELFT> 1369error_code ELFObjectFile<ELFT>::isSectionData(DataRefImpl Sec, 1370 bool &Result) const { 1371 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1372 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE) 1373 && sec->sh_type == ELF::SHT_PROGBITS) 1374 Result = true; 1375 else 1376 Result = false; 1377 return object_error::success; 1378} 1379 1380template<class ELFT> 1381error_code ELFObjectFile<ELFT>::isSectionBSS(DataRefImpl Sec, 1382 bool &Result) const { 1383 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1384 if (sec->sh_flags & (ELF::SHF_ALLOC | ELF::SHF_WRITE) 1385 && sec->sh_type == ELF::SHT_NOBITS) 1386 Result = true; 1387 else 1388 Result = false; 1389 return object_error::success; 1390} 1391 1392template<class ELFT> 1393error_code ELFObjectFile<ELFT>::isSectionRequiredForExecution( 1394 DataRefImpl Sec, bool &Result) const { 1395 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1396 if (sec->sh_flags & ELF::SHF_ALLOC) 1397 Result = true; 1398 else 1399 Result = false; 1400 return object_error::success; 1401} 1402 1403template<class ELFT> 1404error_code ELFObjectFile<ELFT>::isSectionVirtual(DataRefImpl Sec, 1405 bool &Result) const { 1406 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1407 if (sec->sh_type == ELF::SHT_NOBITS) 1408 Result = true; 1409 else 1410 Result = false; 1411 return object_error::success; 1412} 1413 1414template<class ELFT> 1415error_code ELFObjectFile<ELFT>::isSectionZeroInit(DataRefImpl Sec, 1416 bool &Result) const { 1417 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1418 // For ELF, all zero-init sections are virtual (that is, they occupy no space 1419 // in the object image) and vice versa. 1420 Result = sec->sh_type == ELF::SHT_NOBITS; 1421 return object_error::success; 1422} 1423 1424template<class ELFT> 1425error_code ELFObjectFile<ELFT>::isSectionReadOnlyData(DataRefImpl Sec, 1426 bool &Result) const { 1427 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1428 if (sec->sh_flags & ELF::SHF_WRITE || sec->sh_flags & ELF::SHF_EXECINSTR) 1429 Result = false; 1430 else 1431 Result = true; 1432 return object_error::success; 1433} 1434 1435template<class ELFT> 1436error_code ELFObjectFile<ELFT>::sectionContainsSymbol(DataRefImpl Sec, 1437 DataRefImpl Symb, 1438 bool &Result) const { 1439 validateSymbol(Symb); 1440 1441 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1442 const Elf_Sym *symb = getSymbol(Symb); 1443 1444 unsigned shndx = symb->st_shndx; 1445 bool Reserved = shndx >= ELF::SHN_LORESERVE 1446 && shndx <= ELF::SHN_HIRESERVE; 1447 1448 Result = !Reserved && (sec == getSection(symb->st_shndx)); 1449 return object_error::success; 1450} 1451 1452template<class ELFT> 1453relocation_iterator 1454ELFObjectFile<ELFT>::getSectionRelBegin(DataRefImpl Sec) const { 1455 DataRefImpl RelData; 1456 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1457 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec); 1458 if (sec != 0 && ittr != SectionRelocMap.end()) { 1459 RelData.w.a = getSection(ittr->second[0])->sh_info; 1460 RelData.w.b = ittr->second[0]; 1461 RelData.w.c = 0; 1462 } 1463 return relocation_iterator(RelocationRef(RelData, this)); 1464} 1465 1466template<class ELFT> 1467relocation_iterator 1468ELFObjectFile<ELFT>::getSectionRelEnd(DataRefImpl Sec) const { 1469 DataRefImpl RelData; 1470 const Elf_Shdr *sec = reinterpret_cast<const Elf_Shdr *>(Sec.p); 1471 typename RelocMap_t::const_iterator ittr = SectionRelocMap.find(sec); 1472 if (sec != 0 && ittr != SectionRelocMap.end()) { 1473 // Get the index of the last relocation section for this section. 1474 std::size_t relocsecindex = ittr->second[ittr->second.size() - 1]; 1475 const Elf_Shdr *relocsec = getSection(relocsecindex); 1476 RelData.w.a = relocsec->sh_info; 1477 RelData.w.b = relocsecindex; 1478 RelData.w.c = relocsec->sh_size / relocsec->sh_entsize; 1479 } 1480 return relocation_iterator(RelocationRef(RelData, this)); 1481} 1482 1483// Relocations 1484template<class ELFT> 1485error_code ELFObjectFile<ELFT>::getRelocationNext(DataRefImpl Rel, 1486 RelocationRef &Result) const { 1487 ++Rel.w.c; 1488 const Elf_Shdr *relocsec = getSection(Rel.w.b); 1489 if (Rel.w.c >= (relocsec->sh_size / relocsec->sh_entsize)) { 1490 // We have reached the end of the relocations for this section. See if there 1491 // is another relocation section. 1492 typename RelocMap_t::mapped_type relocseclist = 1493 SectionRelocMap.lookup(getSection(Rel.w.a)); 1494 1495 // Do a binary search for the current reloc section index (which must be 1496 // present). Then get the next one. 1497 typename RelocMap_t::mapped_type::const_iterator loc = 1498 std::lower_bound(relocseclist.begin(), relocseclist.end(), Rel.w.b); 1499 ++loc; 1500 1501 // If there is no next one, don't do anything. The ++Rel.w.c above sets Rel 1502 // to the end iterator. 1503 if (loc != relocseclist.end()) { 1504 Rel.w.b = *loc; 1505 Rel.w.a = 0; 1506 } 1507 } 1508 Result = RelocationRef(Rel, this); 1509 return object_error::success; 1510} 1511 1512template<class ELFT> 1513error_code ELFObjectFile<ELFT>::getRelocationSymbol(DataRefImpl Rel, 1514 SymbolRef &Result) const { 1515 uint32_t symbolIdx; 1516 const Elf_Shdr *sec = getSection(Rel.w.b); 1517 switch (sec->sh_type) { 1518 default : 1519 report_fatal_error("Invalid section type in Rel!"); 1520 case ELF::SHT_REL : { 1521 symbolIdx = getRel(Rel)->getSymbol(isMips64EL()); 1522 break; 1523 } 1524 case ELF::SHT_RELA : { 1525 symbolIdx = getRela(Rel)->getSymbol(isMips64EL()); 1526 break; 1527 } 1528 } 1529 DataRefImpl SymbolData; 1530 IndexMap_t::const_iterator it = SymbolTableSectionsIndexMap.find(sec->sh_link); 1531 if (it == SymbolTableSectionsIndexMap.end()) 1532 report_fatal_error("Relocation symbol table not found!"); 1533 SymbolData.d.a = symbolIdx; 1534 SymbolData.d.b = it->second; 1535 Result = SymbolRef(SymbolData, this); 1536 return object_error::success; 1537} 1538 1539template<class ELFT> 1540error_code ELFObjectFile<ELFT>::getRelocationAddress(DataRefImpl Rel, 1541 uint64_t &Result) const { 1542 assert((Header->e_type == ELF::ET_EXEC || Header->e_type == ELF::ET_DYN) && 1543 "Only executable and shared objects files have addresses"); 1544 Result = getROffset(Rel); 1545 return object_error::success; 1546} 1547 1548template<class ELFT> 1549error_code ELFObjectFile<ELFT>::getRelocationOffset(DataRefImpl Rel, 1550 uint64_t &Result) const { 1551 assert(Header->e_type == ELF::ET_REL && 1552 "Only relocatable object files have relocation offsets"); 1553 Result = getROffset(Rel); 1554 return object_error::success; 1555} 1556 1557template<class ELFT> 1558uint64_t ELFObjectFile<ELFT>::getROffset(DataRefImpl Rel) const { 1559 const Elf_Shdr *sec = getSection(Rel.w.b); 1560 switch (sec->sh_type) { 1561 default: 1562 report_fatal_error("Invalid section type in Rel!"); 1563 case ELF::SHT_REL: 1564 return getRel(Rel)->r_offset; 1565 case ELF::SHT_RELA: 1566 return getRela(Rel)->r_offset; 1567 } 1568} 1569 1570template<class ELFT> 1571error_code ELFObjectFile<ELFT>::getRelocationType(DataRefImpl Rel, 1572 uint64_t &Result) const { 1573 const Elf_Shdr *sec = getSection(Rel.w.b); 1574 switch (sec->sh_type) { 1575 default : 1576 report_fatal_error("Invalid section type in Rel!"); 1577 case ELF::SHT_REL : { 1578 Result = getRel(Rel)->getType(isMips64EL()); 1579 break; 1580 } 1581 case ELF::SHT_RELA : { 1582 Result = getRela(Rel)->getType(isMips64EL()); 1583 break; 1584 } 1585 } 1586 return object_error::success; 1587} 1588 1589#define LLVM_ELF_SWITCH_RELOC_TYPE_NAME(enum) \ 1590 case ELF::enum: Res = #enum; break; 1591 1592template<class ELFT> 1593StringRef ELFObjectFile<ELFT>::getRelocationTypeName(uint32_t Type) const { 1594 StringRef Res = "Unknown"; 1595 switch (Header->e_machine) { 1596 case ELF::EM_X86_64: 1597 switch (Type) { 1598 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_NONE); 1599 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_64); 1600 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC32); 1601 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT32); 1602 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLT32); 1603 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_COPY); 1604 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GLOB_DAT); 1605 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_JUMP_SLOT); 1606 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_RELATIVE); 1607 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL); 1608 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32); 1609 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_32S); 1610 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_16); 1611 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC16); 1612 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_8); 1613 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC8); 1614 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPMOD64); 1615 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF64); 1616 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF64); 1617 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSGD); 1618 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSLD); 1619 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_DTPOFF32); 1620 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTTPOFF); 1621 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TPOFF32); 1622 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PC64); 1623 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTOFF64); 1624 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32); 1625 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOT64); 1626 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPCREL64); 1627 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC64); 1628 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPLT64); 1629 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_PLTOFF64); 1630 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE32); 1631 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_SIZE64); 1632 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_GOTPC32_TLSDESC); 1633 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC_CALL); 1634 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_TLSDESC); 1635 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_X86_64_IRELATIVE); 1636 default: break; 1637 } 1638 break; 1639 case ELF::EM_386: 1640 switch (Type) { 1641 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_NONE); 1642 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32); 1643 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC32); 1644 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOT32); 1645 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PLT32); 1646 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_COPY); 1647 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GLOB_DAT); 1648 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_JUMP_SLOT); 1649 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_RELATIVE); 1650 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTOFF); 1651 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_GOTPC); 1652 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_32PLT); 1653 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF); 1654 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE); 1655 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTIE); 1656 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE); 1657 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD); 1658 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM); 1659 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_16); 1660 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC16); 1661 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_8); 1662 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_PC8); 1663 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_32); 1664 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_PUSH); 1665 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_CALL); 1666 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GD_POP); 1667 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_32); 1668 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_PUSH); 1669 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_CALL); 1670 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDM_POP); 1671 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LDO_32); 1672 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_IE_32); 1673 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_LE_32); 1674 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPMOD32); 1675 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DTPOFF32); 1676 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_TPOFF32); 1677 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_GOTDESC); 1678 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC_CALL); 1679 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_TLS_DESC); 1680 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_386_IRELATIVE); 1681 default: break; 1682 } 1683 break; 1684 case ELF::EM_MIPS: 1685 switch (Type) { 1686 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_NONE); 1687 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_16); 1688 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_32); 1689 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL32); 1690 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_26); 1691 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HI16); 1692 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LO16); 1693 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL16); 1694 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_LITERAL); 1695 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT16); 1696 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PC16); 1697 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL16); 1698 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GPREL32); 1699 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT5); 1700 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SHIFT6); 1701 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_64); 1702 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_DISP); 1703 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_PAGE); 1704 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_OFST); 1705 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_HI16); 1706 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GOT_LO16); 1707 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SUB); 1708 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_A); 1709 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_INSERT_B); 1710 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_DELETE); 1711 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHER); 1712 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_HIGHEST); 1713 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_HI16); 1714 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_CALL_LO16); 1715 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_SCN_DISP); 1716 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_REL16); 1717 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_ADD_IMMEDIATE); 1718 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_PJUMP); 1719 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_RELGOT); 1720 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JALR); 1721 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD32); 1722 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL32); 1723 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPMOD64); 1724 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL64); 1725 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GD); 1726 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_LDM); 1727 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_HI16); 1728 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_DTPREL_LO16); 1729 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_GOTTPREL); 1730 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL32); 1731 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL64); 1732 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_HI16); 1733 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_TLS_TPREL_LO16); 1734 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_GLOB_DAT); 1735 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_COPY); 1736 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_JUMP_SLOT); 1737 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_MIPS_NUM); 1738 default: break; 1739 } 1740 break; 1741 case ELF::EM_AARCH64: 1742 switch (Type) { 1743 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_NONE); 1744 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS64); 1745 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS32); 1746 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ABS16); 1747 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL64); 1748 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL32); 1749 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_PREL16); 1750 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0); 1751 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G0_NC); 1752 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1); 1753 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G1_NC); 1754 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2); 1755 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G2_NC); 1756 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_UABS_G3); 1757 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G0); 1758 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G1); 1759 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_MOVW_SABS_G2); 1760 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD_PREL_LO19); 1761 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_LO21); 1762 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_PREL_PG_HI21); 1763 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADD_ABS_LO12_NC); 1764 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST8_ABS_LO12_NC); 1765 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TSTBR14); 1766 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CONDBR19); 1767 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_JUMP26); 1768 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_CALL26); 1769 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST16_ABS_LO12_NC); 1770 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST32_ABS_LO12_NC); 1771 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST64_ABS_LO12_NC); 1772 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LDST128_ABS_LO12_NC); 1773 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_ADR_GOT_PAGE); 1774 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_LD64_GOT_LO12_NC); 1775 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G2); 1776 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1); 1777 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G1_NC); 1778 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0); 1779 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC); 1780 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_HI12); 1781 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12); 1782 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_ADD_DTPREL_LO12_NC); 1783 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12); 1784 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST8_DTPREL_LO12_NC); 1785 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12); 1786 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST16_DTPREL_LO12_NC); 1787 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12); 1788 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST32_DTPREL_LO12_NC); 1789 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12); 1790 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLD_LDST64_DTPREL_LO12_NC); 1791 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G1); 1792 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_MOVW_GOTTPREL_G0_NC); 1793 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21); 1794 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC); 1795 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSIE_LD_GOTTPREL_PREL19); 1796 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G2); 1797 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1); 1798 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G1_NC); 1799 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0); 1800 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_MOVW_TPREL_G0_NC); 1801 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_HI12); 1802 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12); 1803 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_ADD_TPREL_LO12_NC); 1804 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12); 1805 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST8_TPREL_LO12_NC); 1806 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12); 1807 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST16_TPREL_LO12_NC); 1808 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12); 1809 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST32_TPREL_LO12_NC); 1810 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12); 1811 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSLE_LDST64_TPREL_LO12_NC); 1812 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADR_PAGE); 1813 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_LD64_LO12_NC); 1814 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_ADD_LO12_NC); 1815 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_AARCH64_TLSDESC_CALL); 1816 default: break; 1817 } 1818 break; 1819 case ELF::EM_ARM: 1820 switch (Type) { 1821 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_NONE); 1822 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PC24); 1823 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32); 1824 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32); 1825 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G0); 1826 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS16); 1827 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS12); 1828 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ABS5); 1829 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS8); 1830 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL32); 1831 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_CALL); 1832 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC8); 1833 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BREL_ADJ); 1834 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESC); 1835 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_SWI8); 1836 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_XPC25); 1837 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_XPC22); 1838 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPMOD32); 1839 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DTPOFF32); 1840 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_TPOFF32); 1841 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_COPY); 1842 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GLOB_DAT); 1843 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP_SLOT); 1844 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_RELATIVE); 1845 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF32); 1846 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_PREL); 1847 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL); 1848 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32); 1849 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_CALL); 1850 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_JUMP24); 1851 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP24); 1852 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_BASE_ABS); 1853 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_7_0); 1854 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_15_8); 1855 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PCREL_23_15); 1856 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SBREL_11_0_NC); 1857 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_19_12_NC); 1858 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SBREL_27_20_CK); 1859 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET1); 1860 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_SBREL31); 1861 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_V4BX); 1862 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TARGET2); 1863 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PREL31); 1864 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_ABS_NC); 1865 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_ABS); 1866 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_PREL_NC); 1867 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_PREL); 1868 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_ABS_NC); 1869 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_ABS); 1870 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_PREL_NC); 1871 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_PREL); 1872 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP19); 1873 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP6); 1874 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_ALU_PREL_11_0); 1875 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_PC12); 1876 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ABS32_NOI); 1877 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_REL32_NOI); 1878 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0_NC); 1879 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G0); 1880 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1_NC); 1881 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G1); 1882 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_PC_G2); 1883 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G1); 1884 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_PC_G2); 1885 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G0); 1886 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G1); 1887 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_PC_G2); 1888 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G0); 1889 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G1); 1890 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_PC_G2); 1891 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0_NC); 1892 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G0); 1893 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1_NC); 1894 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G1); 1895 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ALU_SB_G2); 1896 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G0); 1897 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G1); 1898 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDR_SB_G2); 1899 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G0); 1900 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G1); 1901 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDRS_SB_G2); 1902 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G0); 1903 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G1); 1904 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_LDC_SB_G2); 1905 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL_NC); 1906 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVT_BREL); 1907 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_MOVW_BREL); 1908 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL_NC); 1909 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVT_BREL); 1910 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_MOVW_BREL); 1911 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GOTDESC); 1912 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_CALL); 1913 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_DESCSEQ); 1914 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_CALL); 1915 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PLT32_ABS); 1916 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_ABS); 1917 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_PREL); 1918 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOT_BREL12); 1919 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTOFF12); 1920 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GOTRELAX); 1921 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTENTRY); 1922 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_GNU_VTINHERIT); 1923 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP11); 1924 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_JUMP8); 1925 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_GD32); 1926 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDM32); 1927 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO32); 1928 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE32); 1929 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE32); 1930 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LDO12); 1931 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_LE12); 1932 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_TLS_IE12GP); 1933 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_0); 1934 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_1); 1935 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_2); 1936 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_3); 1937 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_4); 1938 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_5); 1939 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_6); 1940 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_7); 1941 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_8); 1942 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_9); 1943 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_10); 1944 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_11); 1945 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_12); 1946 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_13); 1947 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_14); 1948 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_PRIVATE_15); 1949 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_ME_TOO); 1950 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ16); 1951 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_ARM_THM_TLS_DESCSEQ32); 1952 default: break; 1953 } 1954 break; 1955 case ELF::EM_HEXAGON: 1956 switch (Type) { 1957 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_NONE); 1958 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL); 1959 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL); 1960 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL); 1961 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_LO16); 1962 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HI16); 1963 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32); 1964 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16); 1965 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8); 1966 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_0); 1967 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_1); 1968 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_2); 1969 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GPREL16_3); 1970 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_HL16); 1971 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL); 1972 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL); 1973 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B32_PCREL_X); 1974 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_6_X); 1975 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B22_PCREL_X); 1976 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B15_PCREL_X); 1977 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B13_PCREL_X); 1978 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B9_PCREL_X); 1979 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_B7_PCREL_X); 1980 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_16_X); 1981 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_12_X); 1982 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_11_X); 1983 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_10_X); 1984 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_9_X); 1985 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_8_X); 1986 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_7_X); 1987 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_X); 1988 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_32_PCREL); 1989 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_COPY); 1990 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GLOB_DAT); 1991 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_JMP_SLOT); 1992 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_RELATIVE); 1993 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_PLT_B22_PCREL); 1994 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_LO16); 1995 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_HI16); 1996 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32); 1997 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_LO16); 1998 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_HI16); 1999 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32); 2000 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16); 2001 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPMOD_32); 2002 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_LO16); 2003 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_HI16); 2004 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32); 2005 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16); 2006 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_PLT_B22_PCREL); 2007 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_LO16); 2008 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_HI16); 2009 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32); 2010 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16); 2011 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_LO16); 2012 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_HI16); 2013 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32); 2014 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_LO16); 2015 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_HI16); 2016 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32); 2017 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16); 2018 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_LO16); 2019 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_HI16); 2020 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32); 2021 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16); 2022 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_6_PCREL_X); 2023 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_32_6_X); 2024 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_16_X); 2025 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOTREL_11_X); 2026 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_32_6_X); 2027 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_16_X); 2028 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GOT_11_X); 2029 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_32_6_X); 2030 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_16_X); 2031 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_DTPREL_11_X); 2032 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_32_6_X); 2033 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_16_X); 2034 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_GD_GOT_11_X); 2035 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_32_6_X); 2036 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_16_X); 2037 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_32_6_X); 2038 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_16_X); 2039 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_IE_GOT_11_X); 2040 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_32_6_X); 2041 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_16_X); 2042 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_HEX_TPREL_11_X); 2043 default: break; 2044 } 2045 break; 2046 case ELF::EM_PPC: 2047 switch (Type) { 2048 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_NONE); 2049 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR32); 2050 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR24); 2051 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16); 2052 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_LO); 2053 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_HI); 2054 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR16_HA); 2055 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14); 2056 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14_BRTAKEN); 2057 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_ADDR14_BRNTAKEN); 2058 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL24); 2059 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14); 2060 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14_BRTAKEN); 2061 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL14_BRNTAKEN); 2062 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_REL32); 2063 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL16_LO); 2064 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC_TPREL16_HA); 2065 default: break; 2066 } 2067 break; 2068 case ELF::EM_PPC64: 2069 switch (Type) { 2070 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_NONE); 2071 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR32); 2072 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_LO); 2073 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HI); 2074 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR14); 2075 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL24); 2076 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL32); 2077 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR64); 2078 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHER); 2079 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_HIGHEST); 2080 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_REL64); 2081 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16); 2082 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_LO); 2083 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_HA); 2084 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC); 2085 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_DS); 2086 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_ADDR16_LO_DS); 2087 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_DS); 2088 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TOC16_LO_DS); 2089 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLS); 2090 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_LO); 2091 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TPREL16_HA); 2092 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_LO); 2093 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_DTPREL16_HA); 2094 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSGD16_LO); 2095 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSGD16_HA); 2096 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSLD16_LO); 2097 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TLSLD16_HA); 2098 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TPREL16_LO_DS); 2099 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_GOT_TPREL16_HA); 2100 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLSGD); 2101 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_PPC64_TLSLD); 2102 default: break; 2103 } 2104 break; 2105 case ELF::EM_S390: 2106 switch (Type) { 2107 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_NONE); 2108 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_8); 2109 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_12); 2110 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_16); 2111 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_32); 2112 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC32); 2113 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT12); 2114 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT32); 2115 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLT32); 2116 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_COPY); 2117 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GLOB_DAT); 2118 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_JMP_SLOT); 2119 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_RELATIVE); 2120 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTOFF); 2121 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPC); 2122 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT16); 2123 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC16); 2124 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC16DBL); 2125 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLT16DBL); 2126 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC32DBL); 2127 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLT32DBL); 2128 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPCDBL); 2129 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_64); 2130 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PC64); 2131 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT64); 2132 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLT64); 2133 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTENT); 2134 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTOFF16); 2135 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTOFF64); 2136 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT12); 2137 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT16); 2138 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT32); 2139 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT64); 2140 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLTENT); 2141 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLTOFF16); 2142 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLTOFF32); 2143 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_PLTOFF64); 2144 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LOAD); 2145 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GDCALL); 2146 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDCALL); 2147 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GD32); 2148 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GD64); 2149 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GOTIE12); 2150 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GOTIE32); 2151 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GOTIE64); 2152 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDM32); 2153 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDM64); 2154 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_IE32); 2155 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_IE64); 2156 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_IEENT); 2157 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LE32); 2158 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LE64); 2159 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDO32); 2160 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_LDO64); 2161 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_DTPMOD); 2162 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_DTPOFF); 2163 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_TPOFF); 2164 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_20); 2165 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOT20); 2166 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_GOTPLT20); 2167 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_TLS_GOTIE20); 2168 LLVM_ELF_SWITCH_RELOC_TYPE_NAME(R_390_IRELATIVE); 2169 default: break; 2170 } 2171 break; 2172 default: break; 2173 } 2174 return Res; 2175} 2176 2177#undef LLVM_ELF_SWITCH_RELOC_TYPE_NAME 2178 2179template<class ELFT> 2180error_code ELFObjectFile<ELFT>::getRelocationTypeName( 2181 DataRefImpl Rel, SmallVectorImpl<char> &Result) const { 2182 const Elf_Shdr *sec = getSection(Rel.w.b); 2183 uint32_t type; 2184 switch (sec->sh_type) { 2185 default : 2186 return object_error::parse_failed; 2187 case ELF::SHT_REL : { 2188 type = getRel(Rel)->getType(isMips64EL()); 2189 break; 2190 } 2191 case ELF::SHT_RELA : { 2192 type = getRela(Rel)->getType(isMips64EL()); 2193 break; 2194 } 2195 } 2196 2197 if (!isMips64EL()) { 2198 StringRef Name = getRelocationTypeName(type); 2199 Result.append(Name.begin(), Name.end()); 2200 } else { 2201 uint8_t Type1 = (type >> 0) & 0xFF; 2202 uint8_t Type2 = (type >> 8) & 0xFF; 2203 uint8_t Type3 = (type >> 16) & 0xFF; 2204 2205 // Concat all three relocation type names. 2206 StringRef Name = getRelocationTypeName(Type1); 2207 Result.append(Name.begin(), Name.end()); 2208 2209 Name = getRelocationTypeName(Type2); 2210 Result.append(1, '/'); 2211 Result.append(Name.begin(), Name.end()); 2212 2213 Name = getRelocationTypeName(Type3); 2214 Result.append(1, '/'); 2215 Result.append(Name.begin(), Name.end()); 2216 } 2217 2218 return object_error::success; 2219} 2220 2221template<class ELFT> 2222error_code ELFObjectFile<ELFT>::getRelocationAdditionalInfo( 2223 DataRefImpl Rel, int64_t &Result) const { 2224 const Elf_Shdr *sec = getSection(Rel.w.b); 2225 switch (sec->sh_type) { 2226 default : 2227 report_fatal_error("Invalid section type in Rel!"); 2228 case ELF::SHT_REL : { 2229 Result = 0; 2230 return object_error::success; 2231 } 2232 case ELF::SHT_RELA : { 2233 Result = getRela(Rel)->r_addend; 2234 return object_error::success; 2235 } 2236 } 2237} 2238 2239template<class ELFT> 2240error_code ELFObjectFile<ELFT>::getRelocationValueString( 2241 DataRefImpl Rel, SmallVectorImpl<char> &Result) const { 2242 const Elf_Shdr *sec = getSection(Rel.w.b); 2243 uint8_t type; 2244 StringRef res; 2245 int64_t addend = 0; 2246 uint16_t symbol_index = 0; 2247 switch (sec->sh_type) { 2248 default: 2249 return object_error::parse_failed; 2250 case ELF::SHT_REL: { 2251 type = getRel(Rel)->getType(isMips64EL()); 2252 symbol_index = getRel(Rel)->getSymbol(isMips64EL()); 2253 // TODO: Read implicit addend from section data. 2254 break; 2255 } 2256 case ELF::SHT_RELA: { 2257 type = getRela(Rel)->getType(isMips64EL()); 2258 symbol_index = getRela(Rel)->getSymbol(isMips64EL()); 2259 addend = getRela(Rel)->r_addend; 2260 break; 2261 } 2262 } 2263 const Elf_Sym *symb = getEntry<Elf_Sym>(sec->sh_link, symbol_index); 2264 StringRef symname; 2265 if (error_code ec = getSymbolName(getSection(sec->sh_link), symb, symname)) 2266 return ec; 2267 switch (Header->e_machine) { 2268 case ELF::EM_X86_64: 2269 switch (type) { 2270 case ELF::R_X86_64_PC8: 2271 case ELF::R_X86_64_PC16: 2272 case ELF::R_X86_64_PC32: { 2273 std::string fmtbuf; 2274 raw_string_ostream fmt(fmtbuf); 2275 fmt << symname << (addend < 0 ? "" : "+") << addend << "-P"; 2276 fmt.flush(); 2277 Result.append(fmtbuf.begin(), fmtbuf.end()); 2278 } 2279 break; 2280 case ELF::R_X86_64_8: 2281 case ELF::R_X86_64_16: 2282 case ELF::R_X86_64_32: 2283 case ELF::R_X86_64_32S: 2284 case ELF::R_X86_64_64: { 2285 std::string fmtbuf; 2286 raw_string_ostream fmt(fmtbuf); 2287 fmt << symname << (addend < 0 ? "" : "+") << addend; 2288 fmt.flush(); 2289 Result.append(fmtbuf.begin(), fmtbuf.end()); 2290 } 2291 break; 2292 default: 2293 res = "Unknown"; 2294 } 2295 break; 2296 case ELF::EM_AARCH64: 2297 case ELF::EM_ARM: 2298 case ELF::EM_HEXAGON: 2299 res = symname; 2300 break; 2301 default: 2302 res = "Unknown"; 2303 } 2304 if (Result.empty()) 2305 Result.append(res.begin(), res.end()); 2306 return object_error::success; 2307} 2308 2309// Verify that the last byte in the string table in a null. 2310template<class ELFT> 2311void ELFObjectFile<ELFT>::VerifyStrTab(const Elf_Shdr *sh) const { 2312 const char *strtab = (const char*)base() + sh->sh_offset; 2313 if (strtab[sh->sh_size - 1] != 0) 2314 // FIXME: Proper error handling. 2315 report_fatal_error("String table must end with a null terminator!"); 2316} 2317 2318template<class ELFT> 2319ELFObjectFile<ELFT>::ELFObjectFile(MemoryBuffer *Object, error_code &ec) 2320 : ObjectFile(getELFType( 2321 static_cast<endianness>(ELFT::TargetEndianness) == support::little, 2322 ELFT::Is64Bits), 2323 Object) 2324 , isDyldELFObject(false) 2325 , SectionHeaderTable(0) 2326 , dot_shstrtab_sec(0) 2327 , dot_strtab_sec(0) 2328 , dot_dynstr_sec(0) 2329 , dot_dynamic_sec(0) 2330 , dot_gnu_version_sec(0) 2331 , dot_gnu_version_r_sec(0) 2332 , dot_gnu_version_d_sec(0) 2333 , dt_soname(0) 2334 { 2335 2336 const uint64_t FileSize = Data->getBufferSize(); 2337 2338 if (sizeof(Elf_Ehdr) > FileSize) 2339 // FIXME: Proper error handling. 2340 report_fatal_error("File too short!"); 2341 2342 Header = reinterpret_cast<const Elf_Ehdr *>(base()); 2343 2344 if (Header->e_shoff == 0) 2345 return; 2346 2347 const uint64_t SectionTableOffset = Header->e_shoff; 2348 2349 if (SectionTableOffset + sizeof(Elf_Shdr) > FileSize) 2350 // FIXME: Proper error handling. 2351 report_fatal_error("Section header table goes past end of file!"); 2352 2353 // The getNumSections() call below depends on SectionHeaderTable being set. 2354 SectionHeaderTable = 2355 reinterpret_cast<const Elf_Shdr *>(base() + SectionTableOffset); 2356 const uint64_t SectionTableSize = getNumSections() * Header->e_shentsize; 2357 2358 if (SectionTableOffset + SectionTableSize > FileSize) 2359 // FIXME: Proper error handling. 2360 report_fatal_error("Section table goes past end of file!"); 2361 2362 // To find the symbol tables we walk the section table to find SHT_SYMTAB. 2363 const Elf_Shdr* SymbolTableSectionHeaderIndex = 0; 2364 const Elf_Shdr* sh = SectionHeaderTable; 2365 2366 // Reserve SymbolTableSections[0] for .dynsym 2367 SymbolTableSections.push_back(NULL); 2368 2369 for (uint64_t i = 0, e = getNumSections(); i != e; ++i) { 2370 switch (sh->sh_type) { 2371 case ELF::SHT_SYMTAB_SHNDX: { 2372 if (SymbolTableSectionHeaderIndex) 2373 // FIXME: Proper error handling. 2374 report_fatal_error("More than one .symtab_shndx!"); 2375 SymbolTableSectionHeaderIndex = sh; 2376 break; 2377 } 2378 case ELF::SHT_SYMTAB: { 2379 SymbolTableSectionsIndexMap[i] = SymbolTableSections.size(); 2380 SymbolTableSections.push_back(sh); 2381 break; 2382 } 2383 case ELF::SHT_DYNSYM: { 2384 if (SymbolTableSections[0] != NULL) 2385 // FIXME: Proper error handling. 2386 report_fatal_error("More than one .dynsym!"); 2387 SymbolTableSectionsIndexMap[i] = 0; 2388 SymbolTableSections[0] = sh; 2389 break; 2390 } 2391 case ELF::SHT_REL: 2392 case ELF::SHT_RELA: { 2393 SectionRelocMap[getSection(sh->sh_info)].push_back(i); 2394 break; 2395 } 2396 case ELF::SHT_DYNAMIC: { 2397 if (dot_dynamic_sec != NULL) 2398 // FIXME: Proper error handling. 2399 report_fatal_error("More than one .dynamic!"); 2400 dot_dynamic_sec = sh; 2401 break; 2402 } 2403 case ELF::SHT_GNU_versym: { 2404 if (dot_gnu_version_sec != NULL) 2405 // FIXME: Proper error handling. 2406 report_fatal_error("More than one .gnu.version section!"); 2407 dot_gnu_version_sec = sh; 2408 break; 2409 } 2410 case ELF::SHT_GNU_verdef: { 2411 if (dot_gnu_version_d_sec != NULL) 2412 // FIXME: Proper error handling. 2413 report_fatal_error("More than one .gnu.version_d section!"); 2414 dot_gnu_version_d_sec = sh; 2415 break; 2416 } 2417 case ELF::SHT_GNU_verneed: { 2418 if (dot_gnu_version_r_sec != NULL) 2419 // FIXME: Proper error handling. 2420 report_fatal_error("More than one .gnu.version_r section!"); 2421 dot_gnu_version_r_sec = sh; 2422 break; 2423 } 2424 } 2425 ++sh; 2426 } 2427 2428 // Sort section relocation lists by index. 2429 for (typename RelocMap_t::iterator i = SectionRelocMap.begin(), 2430 e = SectionRelocMap.end(); i != e; ++i) { 2431 std::sort(i->second.begin(), i->second.end()); 2432 } 2433 2434 // Get string table sections. 2435 dot_shstrtab_sec = getSection(getStringTableIndex()); 2436 if (dot_shstrtab_sec) { 2437 // Verify that the last byte in the string table in a null. 2438 VerifyStrTab(dot_shstrtab_sec); 2439 } 2440 2441 // Merge this into the above loop. 2442 for (const char *i = reinterpret_cast<const char *>(SectionHeaderTable), 2443 *e = i + getNumSections() * Header->e_shentsize; 2444 i != e; i += Header->e_shentsize) { 2445 const Elf_Shdr *sh = reinterpret_cast<const Elf_Shdr*>(i); 2446 if (sh->sh_type == ELF::SHT_STRTAB) { 2447 StringRef SectionName(getString(dot_shstrtab_sec, sh->sh_name)); 2448 if (SectionName == ".strtab") { 2449 if (dot_strtab_sec != 0) 2450 // FIXME: Proper error handling. 2451 report_fatal_error("Already found section named .strtab!"); 2452 dot_strtab_sec = sh; 2453 VerifyStrTab(dot_strtab_sec); 2454 } else if (SectionName == ".dynstr") { 2455 if (dot_dynstr_sec != 0) 2456 // FIXME: Proper error handling. 2457 report_fatal_error("Already found section named .dynstr!"); 2458 dot_dynstr_sec = sh; 2459 VerifyStrTab(dot_dynstr_sec); 2460 } 2461 } 2462 } 2463 2464 // Build symbol name side-mapping if there is one. 2465 if (SymbolTableSectionHeaderIndex) { 2466 const Elf_Word *ShndxTable = reinterpret_cast<const Elf_Word*>(base() + 2467 SymbolTableSectionHeaderIndex->sh_offset); 2468 error_code ec; 2469 for (symbol_iterator si = begin_symbols(), 2470 se = end_symbols(); si != se; si.increment(ec)) { 2471 if (ec) 2472 report_fatal_error("Fewer extended symbol table entries than symbols!"); 2473 if (*ShndxTable != ELF::SHN_UNDEF) 2474 ExtendedSymbolTable[getSymbol(si->getRawDataRefImpl())] = *ShndxTable; 2475 ++ShndxTable; 2476 } 2477 } 2478} 2479 2480// Get the symbol table index in the symtab section given a symbol 2481template<class ELFT> 2482uint64_t ELFObjectFile<ELFT>::getSymbolIndex(const Elf_Sym *Sym) const { 2483 assert(SymbolTableSections.size() == 1 && "Only one symbol table supported!"); 2484 const Elf_Shdr *SymTab = *SymbolTableSections.begin(); 2485 uintptr_t SymLoc = uintptr_t(Sym); 2486 uintptr_t SymTabLoc = uintptr_t(base() + SymTab->sh_offset); 2487 assert(SymLoc > SymTabLoc && "Symbol not in symbol table!"); 2488 uint64_t SymOffset = SymLoc - SymTabLoc; 2489 assert(SymOffset % SymTab->sh_entsize == 0 && 2490 "Symbol not multiple of symbol size!"); 2491 return SymOffset / SymTab->sh_entsize; 2492} 2493 2494template<class ELFT> 2495symbol_iterator ELFObjectFile<ELFT>::begin_symbols() const { 2496 DataRefImpl SymbolData; 2497 if (SymbolTableSections.size() <= 1) { 2498 SymbolData.d.a = std::numeric_limits<uint32_t>::max(); 2499 SymbolData.d.b = std::numeric_limits<uint32_t>::max(); 2500 } else { 2501 SymbolData.d.a = 1; // The 0th symbol in ELF is fake. 2502 SymbolData.d.b = 1; // The 0th table is .dynsym 2503 } 2504 return symbol_iterator(SymbolRef(SymbolData, this)); 2505} 2506 2507template<class ELFT> 2508symbol_iterator ELFObjectFile<ELFT>::end_symbols() const { 2509 DataRefImpl SymbolData; 2510 SymbolData.d.a = std::numeric_limits<uint32_t>::max(); 2511 SymbolData.d.b = std::numeric_limits<uint32_t>::max(); 2512 return symbol_iterator(SymbolRef(SymbolData, this)); 2513} 2514 2515template<class ELFT> 2516symbol_iterator ELFObjectFile<ELFT>::begin_dynamic_symbols() const { 2517 DataRefImpl SymbolData; 2518 if (SymbolTableSections[0] == NULL) { 2519 SymbolData.d.a = std::numeric_limits<uint32_t>::max(); 2520 SymbolData.d.b = std::numeric_limits<uint32_t>::max(); 2521 } else { 2522 SymbolData.d.a = 1; // The 0th symbol in ELF is fake. 2523 SymbolData.d.b = 0; // The 0th table is .dynsym 2524 } 2525 return symbol_iterator(SymbolRef(SymbolData, this)); 2526} 2527 2528template<class ELFT> 2529symbol_iterator ELFObjectFile<ELFT>::end_dynamic_symbols() const { 2530 DataRefImpl SymbolData; 2531 SymbolData.d.a = std::numeric_limits<uint32_t>::max(); 2532 SymbolData.d.b = std::numeric_limits<uint32_t>::max(); 2533 return symbol_iterator(SymbolRef(SymbolData, this)); 2534} 2535 2536template<class ELFT> 2537section_iterator ELFObjectFile<ELFT>::begin_sections() const { 2538 DataRefImpl ret; 2539 ret.p = reinterpret_cast<intptr_t>(base() + Header->e_shoff); 2540 return section_iterator(SectionRef(ret, this)); 2541} 2542 2543template<class ELFT> 2544section_iterator ELFObjectFile<ELFT>::end_sections() const { 2545 DataRefImpl ret; 2546 ret.p = reinterpret_cast<intptr_t>(base() 2547 + Header->e_shoff 2548 + (Header->e_shentsize*getNumSections())); 2549 return section_iterator(SectionRef(ret, this)); 2550} 2551 2552template<class ELFT> 2553typename ELFObjectFile<ELFT>::Elf_Dyn_iterator 2554ELFObjectFile<ELFT>::begin_dynamic_table() const { 2555 if (dot_dynamic_sec) 2556 return Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize, 2557 (const char *)base() + dot_dynamic_sec->sh_offset); 2558 return Elf_Dyn_iterator(0, 0); 2559} 2560 2561template<class ELFT> 2562typename ELFObjectFile<ELFT>::Elf_Dyn_iterator 2563ELFObjectFile<ELFT>::end_dynamic_table(bool NULLEnd) const { 2564 if (dot_dynamic_sec) { 2565 Elf_Dyn_iterator Ret(dot_dynamic_sec->sh_entsize, 2566 (const char *)base() + dot_dynamic_sec->sh_offset + 2567 dot_dynamic_sec->sh_size); 2568 2569 if (NULLEnd) { 2570 Elf_Dyn_iterator Start = begin_dynamic_table(); 2571 while (Start != Ret && Start->getTag() != ELF::DT_NULL) 2572 ++Start; 2573 2574 // Include the DT_NULL. 2575 if (Start != Ret) 2576 ++Start; 2577 Ret = Start; 2578 } 2579 return Ret; 2580 } 2581 return Elf_Dyn_iterator(0, 0); 2582} 2583 2584template<class ELFT> 2585StringRef ELFObjectFile<ELFT>::getLoadName() const { 2586 if (!dt_soname) { 2587 // Find the DT_SONAME entry 2588 Elf_Dyn_iterator it = begin_dynamic_table(); 2589 Elf_Dyn_iterator ie = end_dynamic_table(); 2590 while (it != ie && it->getTag() != ELF::DT_SONAME) 2591 ++it; 2592 2593 if (it != ie) { 2594 if (dot_dynstr_sec == NULL) 2595 report_fatal_error("Dynamic string table is missing"); 2596 dt_soname = getString(dot_dynstr_sec, it->getVal()); 2597 } else { 2598 dt_soname = ""; 2599 } 2600 } 2601 return dt_soname; 2602} 2603 2604template<class ELFT> 2605library_iterator ELFObjectFile<ELFT>::begin_libraries_needed() const { 2606 // Find the first DT_NEEDED entry 2607 Elf_Dyn_iterator i = begin_dynamic_table(); 2608 Elf_Dyn_iterator e = end_dynamic_table(); 2609 while (i != e && i->getTag() != ELF::DT_NEEDED) 2610 ++i; 2611 2612 DataRefImpl DRI; 2613 DRI.p = reinterpret_cast<uintptr_t>(i.get()); 2614 return library_iterator(LibraryRef(DRI, this)); 2615} 2616 2617template<class ELFT> 2618error_code ELFObjectFile<ELFT>::getLibraryNext(DataRefImpl Data, 2619 LibraryRef &Result) const { 2620 // Use the same DataRefImpl format as DynRef. 2621 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize, 2622 reinterpret_cast<const char *>(Data.p)); 2623 Elf_Dyn_iterator e = end_dynamic_table(); 2624 2625 // Skip the current dynamic table entry and find the next DT_NEEDED entry. 2626 do 2627 ++i; 2628 while (i != e && i->getTag() != ELF::DT_NEEDED); 2629 2630 DataRefImpl DRI; 2631 DRI.p = reinterpret_cast<uintptr_t>(i.get()); 2632 Result = LibraryRef(DRI, this); 2633 return object_error::success; 2634} 2635 2636template<class ELFT> 2637error_code ELFObjectFile<ELFT>::getLibraryPath(DataRefImpl Data, 2638 StringRef &Res) const { 2639 Elf_Dyn_iterator i = Elf_Dyn_iterator(dot_dynamic_sec->sh_entsize, 2640 reinterpret_cast<const char *>(Data.p)); 2641 if (i == end_dynamic_table()) 2642 report_fatal_error("getLibraryPath() called on iterator end"); 2643 2644 if (i->getTag() != ELF::DT_NEEDED) 2645 report_fatal_error("Invalid library_iterator"); 2646 2647 // This uses .dynstr to lookup the name of the DT_NEEDED entry. 2648 // THis works as long as DT_STRTAB == .dynstr. This is true most of 2649 // the time, but the specification allows exceptions. 2650 // TODO: This should really use DT_STRTAB instead. Doing this requires 2651 // reading the program headers. 2652 if (dot_dynstr_sec == NULL) 2653 report_fatal_error("Dynamic string table is missing"); 2654 Res = getString(dot_dynstr_sec, i->getVal()); 2655 return object_error::success; 2656} 2657 2658template<class ELFT> 2659library_iterator ELFObjectFile<ELFT>::end_libraries_needed() const { 2660 Elf_Dyn_iterator e = end_dynamic_table(); 2661 DataRefImpl DRI; 2662 DRI.p = reinterpret_cast<uintptr_t>(e.get()); 2663 return library_iterator(LibraryRef(DRI, this)); 2664} 2665 2666template<class ELFT> 2667uint8_t ELFObjectFile<ELFT>::getBytesInAddress() const { 2668 return ELFT::Is64Bits ? 8 : 4; 2669} 2670 2671template<class ELFT> 2672StringRef ELFObjectFile<ELFT>::getFileFormatName() const { 2673 switch(Header->e_ident[ELF::EI_CLASS]) { 2674 case ELF::ELFCLASS32: 2675 switch(Header->e_machine) { 2676 case ELF::EM_386: 2677 return "ELF32-i386"; 2678 case ELF::EM_X86_64: 2679 return "ELF32-x86-64"; 2680 case ELF::EM_ARM: 2681 return "ELF32-arm"; 2682 case ELF::EM_HEXAGON: 2683 return "ELF32-hexagon"; 2684 case ELF::EM_MIPS: 2685 return "ELF32-mips"; 2686 default: 2687 return "ELF32-unknown"; 2688 } 2689 case ELF::ELFCLASS64: 2690 switch(Header->e_machine) { 2691 case ELF::EM_386: 2692 return "ELF64-i386"; 2693 case ELF::EM_X86_64: 2694 return "ELF64-x86-64"; 2695 case ELF::EM_AARCH64: 2696 return "ELF64-aarch64"; 2697 case ELF::EM_PPC64: 2698 return "ELF64-ppc64"; 2699 case ELF::EM_S390: 2700 return "ELF64-s390"; 2701 default: 2702 return "ELF64-unknown"; 2703 } 2704 default: 2705 // FIXME: Proper error handling. 2706 report_fatal_error("Invalid ELFCLASS!"); 2707 } 2708} 2709 2710template<class ELFT> 2711unsigned ELFObjectFile<ELFT>::getArch() const { 2712 switch(Header->e_machine) { 2713 case ELF::EM_386: 2714 return Triple::x86; 2715 case ELF::EM_X86_64: 2716 return Triple::x86_64; 2717 case ELF::EM_AARCH64: 2718 return Triple::aarch64; 2719 case ELF::EM_ARM: 2720 return Triple::arm; 2721 case ELF::EM_HEXAGON: 2722 return Triple::hexagon; 2723 case ELF::EM_MIPS: 2724 return (ELFT::TargetEndianness == support::little) ? 2725 Triple::mipsel : Triple::mips; 2726 case ELF::EM_PPC64: 2727 return Triple::ppc64; 2728 case ELF::EM_S390: 2729 return Triple::systemz; 2730 default: 2731 return Triple::UnknownArch; 2732 } 2733} 2734 2735template<class ELFT> 2736uint64_t ELFObjectFile<ELFT>::getNumSections() const { 2737 assert(Header && "Header not initialized!"); 2738 if (Header->e_shnum == ELF::SHN_UNDEF) { 2739 assert(SectionHeaderTable && "SectionHeaderTable not initialized!"); 2740 return SectionHeaderTable->sh_size; 2741 } 2742 return Header->e_shnum; 2743} 2744 2745template<class ELFT> 2746uint64_t 2747ELFObjectFile<ELFT>::getStringTableIndex() const { 2748 if (Header->e_shnum == ELF::SHN_UNDEF) { 2749 if (Header->e_shstrndx == ELF::SHN_HIRESERVE) 2750 return SectionHeaderTable->sh_link; 2751 if (Header->e_shstrndx >= getNumSections()) 2752 return 0; 2753 } 2754 return Header->e_shstrndx; 2755} 2756 2757template<class ELFT> 2758template<typename T> 2759inline const T * 2760ELFObjectFile<ELFT>::getEntry(uint16_t Section, uint32_t Entry) const { 2761 return getEntry<T>(getSection(Section), Entry); 2762} 2763 2764template<class ELFT> 2765template<typename T> 2766inline const T * 2767ELFObjectFile<ELFT>::getEntry(const Elf_Shdr * Section, uint32_t Entry) const { 2768 return reinterpret_cast<const T *>( 2769 base() 2770 + Section->sh_offset 2771 + (Entry * Section->sh_entsize)); 2772} 2773 2774template<class ELFT> 2775const typename ELFObjectFile<ELFT>::Elf_Sym * 2776ELFObjectFile<ELFT>::getSymbol(DataRefImpl Symb) const { 2777 return getEntry<Elf_Sym>(SymbolTableSections[Symb.d.b], Symb.d.a); 2778} 2779 2780template<class ELFT> 2781const typename ELFObjectFile<ELFT>::Elf_Rel * 2782ELFObjectFile<ELFT>::getRel(DataRefImpl Rel) const { 2783 return getEntry<Elf_Rel>(Rel.w.b, Rel.w.c); 2784} 2785 2786template<class ELFT> 2787const typename ELFObjectFile<ELFT>::Elf_Rela * 2788ELFObjectFile<ELFT>::getRela(DataRefImpl Rela) const { 2789 return getEntry<Elf_Rela>(Rela.w.b, Rela.w.c); 2790} 2791 2792template<class ELFT> 2793const typename ELFObjectFile<ELFT>::Elf_Shdr * 2794ELFObjectFile<ELFT>::getSection(DataRefImpl Symb) const { 2795 const Elf_Shdr *sec = getSection(Symb.d.b); 2796 if (sec->sh_type != ELF::SHT_SYMTAB || sec->sh_type != ELF::SHT_DYNSYM) 2797 // FIXME: Proper error handling. 2798 report_fatal_error("Invalid symbol table section!"); 2799 return sec; 2800} 2801 2802template<class ELFT> 2803const typename ELFObjectFile<ELFT>::Elf_Shdr * 2804ELFObjectFile<ELFT>::getSection(uint32_t index) const { 2805 if (index == 0) 2806 return 0; 2807 if (!SectionHeaderTable || index >= getNumSections()) 2808 // FIXME: Proper error handling. 2809 report_fatal_error("Invalid section index!"); 2810 2811 return reinterpret_cast<const Elf_Shdr *>( 2812 reinterpret_cast<const char *>(SectionHeaderTable) 2813 + (index * Header->e_shentsize)); 2814} 2815 2816template<class ELFT> 2817const char *ELFObjectFile<ELFT>::getString(uint32_t section, 2818 ELF::Elf32_Word offset) const { 2819 return getString(getSection(section), offset); 2820} 2821 2822template<class ELFT> 2823const char *ELFObjectFile<ELFT>::getString(const Elf_Shdr *section, 2824 ELF::Elf32_Word offset) const { 2825 assert(section && section->sh_type == ELF::SHT_STRTAB && "Invalid section!"); 2826 if (offset >= section->sh_size) 2827 // FIXME: Proper error handling. 2828 report_fatal_error("Symbol name offset outside of string table!"); 2829 return (const char *)base() + section->sh_offset + offset; 2830} 2831 2832template<class ELFT> 2833error_code ELFObjectFile<ELFT>::getSymbolName(const Elf_Shdr *section, 2834 const Elf_Sym *symb, 2835 StringRef &Result) const { 2836 if (symb->st_name == 0) { 2837 const Elf_Shdr *section = getSection(symb); 2838 if (!section) 2839 Result = ""; 2840 else 2841 Result = getString(dot_shstrtab_sec, section->sh_name); 2842 return object_error::success; 2843 } 2844 2845 if (section == SymbolTableSections[0]) { 2846 // Symbol is in .dynsym, use .dynstr string table 2847 Result = getString(dot_dynstr_sec, symb->st_name); 2848 } else { 2849 // Use the default symbol table name section. 2850 Result = getString(dot_strtab_sec, symb->st_name); 2851 } 2852 return object_error::success; 2853} 2854 2855template<class ELFT> 2856error_code ELFObjectFile<ELFT>::getSectionName(const Elf_Shdr *section, 2857 StringRef &Result) const { 2858 Result = StringRef(getString(dot_shstrtab_sec, section->sh_name)); 2859 return object_error::success; 2860} 2861 2862template<class ELFT> 2863error_code ELFObjectFile<ELFT>::getSymbolVersion(const Elf_Shdr *section, 2864 const Elf_Sym *symb, 2865 StringRef &Version, 2866 bool &IsDefault) const { 2867 // Handle non-dynamic symbols. 2868 if (section != SymbolTableSections[0]) { 2869 // Non-dynamic symbols can have versions in their names 2870 // A name of the form 'foo@V1' indicates version 'V1', non-default. 2871 // A name of the form 'foo@@V2' indicates version 'V2', default version. 2872 StringRef Name; 2873 error_code ec = getSymbolName(section, symb, Name); 2874 if (ec != object_error::success) 2875 return ec; 2876 size_t atpos = Name.find('@'); 2877 if (atpos == StringRef::npos) { 2878 Version = ""; 2879 IsDefault = false; 2880 return object_error::success; 2881 } 2882 ++atpos; 2883 if (atpos < Name.size() && Name[atpos] == '@') { 2884 IsDefault = true; 2885 ++atpos; 2886 } else { 2887 IsDefault = false; 2888 } 2889 Version = Name.substr(atpos); 2890 return object_error::success; 2891 } 2892 2893 // This is a dynamic symbol. Look in the GNU symbol version table. 2894 if (dot_gnu_version_sec == NULL) { 2895 // No version table. 2896 Version = ""; 2897 IsDefault = false; 2898 return object_error::success; 2899 } 2900 2901 // Determine the position in the symbol table of this entry. 2902 const char *sec_start = (const char*)base() + section->sh_offset; 2903 size_t entry_index = ((const char*)symb - sec_start)/section->sh_entsize; 2904 2905 // Get the corresponding version index entry 2906 const Elf_Versym *vs = getEntry<Elf_Versym>(dot_gnu_version_sec, entry_index); 2907 size_t version_index = vs->vs_index & ELF::VERSYM_VERSION; 2908 2909 // Special markers for unversioned symbols. 2910 if (version_index == ELF::VER_NDX_LOCAL || 2911 version_index == ELF::VER_NDX_GLOBAL) { 2912 Version = ""; 2913 IsDefault = false; 2914 return object_error::success; 2915 } 2916 2917 // Lookup this symbol in the version table 2918 LoadVersionMap(); 2919 if (version_index >= VersionMap.size() || VersionMap[version_index].isNull()) 2920 report_fatal_error("Symbol has version index without corresponding " 2921 "define or reference entry"); 2922 const VersionMapEntry &entry = VersionMap[version_index]; 2923 2924 // Get the version name string 2925 size_t name_offset; 2926 if (entry.isVerdef()) { 2927 // The first Verdaux entry holds the name. 2928 name_offset = entry.getVerdef()->getAux()->vda_name; 2929 } else { 2930 name_offset = entry.getVernaux()->vna_name; 2931 } 2932 Version = getString(dot_dynstr_sec, name_offset); 2933 2934 // Set IsDefault 2935 if (entry.isVerdef()) { 2936 IsDefault = !(vs->vs_index & ELF::VERSYM_HIDDEN); 2937 } else { 2938 IsDefault = false; 2939 } 2940 2941 return object_error::success; 2942} 2943 2944/// This is a generic interface for retrieving GNU symbol version 2945/// information from an ELFObjectFile. 2946static inline error_code GetELFSymbolVersion(const ObjectFile *Obj, 2947 const SymbolRef &Sym, 2948 StringRef &Version, 2949 bool &IsDefault) { 2950 // Little-endian 32-bit 2951 if (const ELFObjectFile<ELFType<support::little, 4, false> > *ELFObj = 2952 dyn_cast<ELFObjectFile<ELFType<support::little, 4, false> > >(Obj)) 2953 return ELFObj->getSymbolVersion(Sym, Version, IsDefault); 2954 2955 // Big-endian 32-bit 2956 if (const ELFObjectFile<ELFType<support::big, 4, false> > *ELFObj = 2957 dyn_cast<ELFObjectFile<ELFType<support::big, 4, false> > >(Obj)) 2958 return ELFObj->getSymbolVersion(Sym, Version, IsDefault); 2959 2960 // Little-endian 64-bit 2961 if (const ELFObjectFile<ELFType<support::little, 8, true> > *ELFObj = 2962 dyn_cast<ELFObjectFile<ELFType<support::little, 8, true> > >(Obj)) 2963 return ELFObj->getSymbolVersion(Sym, Version, IsDefault); 2964 2965 // Big-endian 64-bit 2966 if (const ELFObjectFile<ELFType<support::big, 8, true> > *ELFObj = 2967 dyn_cast<ELFObjectFile<ELFType<support::big, 8, true> > >(Obj)) 2968 return ELFObj->getSymbolVersion(Sym, Version, IsDefault); 2969 2970 llvm_unreachable("Object passed to GetELFSymbolVersion() is not ELF"); 2971} 2972 2973/// This function returns the hash value for a symbol in the .dynsym section 2974/// Name of the API remains consistent as specified in the libelf 2975/// REF : http://www.sco.com/developers/gabi/latest/ch5.dynamic.html#hash 2976static inline unsigned elf_hash(StringRef &symbolName) { 2977 unsigned h = 0, g; 2978 for (unsigned i = 0, j = symbolName.size(); i < j; i++) { 2979 h = (h << 4) + symbolName[i]; 2980 g = h & 0xf0000000L; 2981 if (g != 0) 2982 h ^= g >> 24; 2983 h &= ~g; 2984 } 2985 return h; 2986} 2987 2988} 2989} 2990 2991#endif 2992