elfcpp/elfcpp.h

   1 // elfcpp.h -- main header file for elfcpp    -*- C++ -*-
   2
   3 // This is the external interface for elfcpp.
   4
   5 #ifndef ELFCPP_H
   6 #define ELFCPP_H
   7
   8 #include "elfcpp_config.h"
   9 #include "elfcpp_swap.h"
  10
  11 #include <stdint.h>
  12
  13 namespace elfcpp
  14 {
  15
  16 // Basic ELF types.
  17
  18 // These types are always the same size.
  19
  20 typedef uint16_t Elf_Half;
  21 typedef uint32_t Elf_Word;
  22 typedef int32_t Elf_Sword;
  23 typedef uint64_t Elf_Xword;
  24 typedef int64_t Elf_Sxword;
  25
  26 // These types vary in size depending on the ELF file class.  The
  27 // template parameter should be 32 or 64.
  28
  29 template<int size>
  30 struct Elf_types;
  31
  32 template<>
  33 struct Elf_types<32>
  34 {
  35   typedef uint32_t Elf_Addr;
  36   typedef uint32_t Elf_Off;
  37   typedef uint32_t Elf_WXword;
  38   typedef int32_t Elf_Swxword;
  39 };
  40
  41 template<>
  42 struct Elf_types<64>
  43 {
  44   typedef uint64_t Elf_Addr;
  45   typedef uint64_t Elf_Off;
  46   typedef uint64_t Elf_WXword;
  47   typedef int64_t Elf_Swxword;
  48 };
  49
  50 // Offsets within the Ehdr e_ident field.
  51
  52 const int EI_MAG0 = 0;
  53 const int EI_MAG1 = 1;
  54 const int EI_MAG2 = 2;
  55 const int EI_MAG3 = 3;
  56 const int EI_CLASS = 4;
  57 const int EI_DATA = 5;
  58 const int EI_VERSION = 6;
  59 const int EI_OSABI = 7;
  60 const int EI_ABIVERSION = 8;
  61 const int EI_PAD = 9;
  62 const int EI_NIDENT = 16;
  63
  64 // The valid values found in Ehdr e_ident[EI_MAG0 through EI_MAG3].
  65
  66 const int ELFMAG0 = 0x7f;
  67 const int ELFMAG1 = 'E';
  68 const int ELFMAG2 = 'L';
  69 const int ELFMAG3 = 'F';
  70
  71 // The valid values found in Ehdr e_ident[EI_CLASS].
  72
  73 enum
  74 {
  75   ELFCLASSNONE = 0,
  76   ELFCLASS32 = 1,
  77   ELFCLASS64 = 2
  78 };
  79
  80 // The valid values found in Ehdr e_ident[EI_DATA].
  81
  82 enum
  83 {
  84   ELFDATANONE = 0,
  85   ELFDATA2LSB = 1,
  86   ELFDATA2MSB = 2
  87 };
  88
  89 // The valid values found in Ehdr e_ident[EI_VERSION] and e_version.
  90
  91 enum
  92 {
  93   EV_NONE = 0,
  94   EV_CURRENT = 1
  95 };
  96
  97 // The valid values found in Ehdr e_ident[EI_OSABI].
  98
  99 enum ELFOSABI
 100 {
 101   ELFOSABI_NONE = 0,
 102   ELFOSABI_HPUX = 1,
 103   ELFOSABI_NETBSD = 2,
 104   // ELFOSABI_LINUX is not listed in the ELF standard.
 105   ELFOSABI_LINUX = 3,
 106   // ELFOSABI_HURD is not listed in the ELF standard.
 107   ELFOSABI_HURD = 4,
 108   ELFOSABI_SOLARIS = 6,
 109   ELFOSABI_AIX = 7,
 110   ELFOSABI_IRIX = 8,
 111   ELFOSABI_FREEBSD = 9,
 112   ELFOSABI_TRU64 = 10,
 113   ELFOSABI_MODESTO = 11,
 114   ELFOSABI_OPENBSD = 12,
 115   ELFOSABI_OPENVMS = 13,
 116   ELFOSABI_NSK = 14,
 117   ELFOSABI_AROS = 15,
 118   // A GNU extension for the ARM.
 119   ELFOSABI_ARM = 97,
 120   // A GNU extension for the MSP.
 121   ELFOSABI_STANDALONE = 255
 122 };
 123
 124 // The valid values found in the Ehdr e_type field.
 125
 126 enum ET
 127 {
 128   ET_NONE = 0,
 129   ET_REL = 1,
 130   ET_EXEC = 2,
 131   ET_DYN = 3,
 132   ET_CORE = 4,
 133   ET_LOOS = 0xfe00,
 134   ET_HIOS = 0xfeff,
 135   ET_LOPROC = 0xff00,
 136   ET_HIPROC = 0xffff
 137 };
 138
 139 // The valid values found in the Ehdr e_machine field.
 140
 141 enum EM
 142 {
 143   EM_NONE = 0,
 144   EM_M32 = 1,
 145   EM_SPARC = 2,
 146   EM_386 = 3,
 147   EM_68K = 4,
 148   EM_88K = 5,
 149   // 6 used to be EM_486
 150   EM_860 = 7,
 151   EM_MIPS = 8,
 152   EM_S370 = 9,
 153   EM_MIPS_RS3_LE = 10,
 154   // 11 was the old Sparc V9 ABI.
 155   // 12 through 14 are reserved.
 156   EM_PARISC = 15,
 157   // 16 is reserved.
 158   // Some old PowerPC object files use 17.
 159   EM_VPP500 = 17,
 160   EM_SPARC32PLUS = 18,
 161   EM_960 = 19,
 162   EM_PPC = 20,
 163   EM_PPC64 = 21,
 164   EM_S390 = 22,
 165   // 23 through 35 are served.
 166   EM_V800 = 36,
 167   EM_FR20 = 37,
 168   EM_RH32 = 38,
 169   EM_RCE = 39,
 170   EM_ARM = 40,
 171   EM_ALPHA = 41,
 172   EM_SH = 42,
 173   EM_SPARCV9 = 43,
 174   EM_TRICORE = 44,
 175   EM_ARC = 45,
 176   EM_H8_300 = 46,
 177   EM_H8_300H = 47,
 178   EM_H8S = 48,
 179   EM_H8_500 = 49,
 180   EM_IA_64 = 50,
 181   EM_MIPS_X = 51,
 182   EM_COLDFIRE = 52,
 183   EM_68HC12 = 53,
 184   EM_MMA = 54,
 185   EM_PCP = 55,
 186   EM_NCPU = 56,
 187   EM_NDR1 = 57,
 188   EM_STARCORE = 58,
 189   EM_ME16 = 59,
 190   EM_ST100 = 60,
 191   EM_TINYJ = 61,
 192   EM_X86_64 = 62,
 193   EM_PDSP = 63,
 194   EM_PDP10 = 64,
 195   EM_PDP11 = 65,
 196   EM_FX66 = 66,
 197   EM_ST9PLUS = 67,
 198   EM_ST7 = 68,
 199   EM_68HC16 = 69,
 200   EM_68HC11 = 70,
 201   EM_68HC08 = 71,
 202   EM_68HC05 = 72,
 203   EM_SVX = 73,
 204   EM_ST19 = 74,
 205   EM_VAX = 75,
 206   EM_CRIS = 76,
 207   EM_JAVELIN = 77,
 208   EM_FIREPATH = 78,
 209   EM_ZSP = 79,
 210   EM_MMIX = 80,
 211   EM_HUANY = 81,
 212   EM_PRISM = 82,
 213   EM_AVR = 83,
 214   EM_FR30 = 84,
 215   EM_D10V = 85,
 216   EM_D30V = 86,
 217   EM_V850 = 87,
 218   EM_M32R = 88,
 219   EM_MN10300 = 89,
 220   EM_MN10200 = 90,
 221   EM_PJ = 91,
 222   EM_OPENRISC = 92,
 223   EM_ARC_A5 = 93,
 224   EM_XTENSA = 94,
 225   EM_VIDEOCORE = 95,
 226   EM_TMM_GPP = 96,
 227   EM_NS32K = 97,
 228   EM_TPC = 98,
 229   // Some old picoJava object files use 99 (EM_PJ is correct).
 230   EM_SNP1K = 99,
 231   EM_ST200 = 100,
 232   EM_IP2K = 101,
 233   EM_MAX = 102,
 234   EM_CR = 103,
 235   EM_F2MC16 = 104,
 236   EM_MSP430 = 105,
 237   EM_BLACKFIN = 106,
 238   EM_SE_C33 = 107,
 239   EM_SEP = 108,
 240   EM_ARCA = 109,
 241   EM_UNICORE = 110,
 242   EM_ALTERA_NIOS2 = 113,
 243   EM_CRX = 114,
 244   // The Morph MT.
 245   EM_MT = 0x2530,
 246   // DLX.
 247   EM_DLX = 0x5aa5,
 248   // FRV.
 249   EM_FRV = 0x5441,
 250   // Infineon Technologies 16-bit microcontroller with C166-V2 core.
 251   EM_X16X = 0x4688,
 252   // Xstorym16
 253   EM_XSTORMY16 = 0xad45,
 254   // Renesas M32C
 255   EM_M32C = 0xfeb0,
 256   // Vitesse IQ2000
 257   EM_IQ2000 = 0xfeba,
 258   // NIOS
 259   EM_NIOS32 = 0xfebb
 260   // Old AVR objects used 0x1057 (EM_AVR is correct).
 261   // Old MSP430 objects used 0x1059 (EM_MSP430 is correct).
 262   // Old FR30 objects used 0x3330 (EM_FR30 is correct).
 263   // Old OpenRISC objects used 0x3426 and 0x8472 (EM_OPENRISC is correct).
 264   // Old D10V objects used 0x7650 (EM_D10V is correct).
 265   // Old D30V objects used 0x7676 (EM_D30V is correct).
 266   // Old IP2X objects used 0x8217 (EM_IP2K is correct).
 267   // Old PowerPC objects used 0x9025 (EM_PPC is correct).
 268   // Old Alpha objects used 0x9026 (EM_ALPHA is correct).
 269   // Old M32R objects used 0x9041 (EM_M32R is correct).
 270   // Old V850 objects used 0x9080 (EM_V850 is correct).
 271   // Old S/390 objects used 0xa390 (EM_S390 is correct).
 272   // Old Xtensa objects used 0xabc7 (EM_XTENSA is correct).
 273   // Old MN10300 objects used 0xbeef (EM_MN10300 is correct).
 274   // Old MN10200 objects used 0xdead (EM_MN10200 is correct).
 275 };
 276
 277 // Special section indices.
 278
 279 enum
 280 {
 281   SHN_UNDEF = 0,
 282   SHN_LORESERVE = 0xff00,
 283   SHN_LOPROC = 0xff00,
 284   SHN_HIPROC = 0xff1f,
 285   SHN_LOOS = 0xff20,
 286   SHN_HIOS = 0xff3f,
 287   SHN_ABS = 0xfff1,
 288   SHN_COMMON = 0xfff2,
 289   SHN_XINDEX = 0xffff,
 290   SHN_HIRESERVE = 0xffff
 291 };
 292
 293 // The valid values found in the Shdr sh_type field.
 294
 295 enum SHT
 296 {
 297   SHT_NULL = 0,
 298   SHT_PROGBITS = 1,
 299   SHT_SYMTAB = 2,
 300   SHT_STRTAB = 3,
 301   SHT_RELA = 4,
 302   SHT_HASH = 5,
 303   SHT_DYNAMIC = 6,
 304   SHT_NOTE = 7,
 305   SHT_NOBITS = 8,
 306   SHT_REL = 9,
 307   SHT_SHLIB = 10,
 308   SHT_DYNSYM = 11,
 309   SHT_INIT_ARRAY = 14,
 310   SHT_FINI_ARRAY = 15,
 311   SHT_PREINIT_ARRAY = 16,
 312   SHT_GROUP = 17,
 313   SHT_SYMTAB_SHNDX = 18,
 314   SHT_LOOS = 0x60000000,
 315   SHT_HIOS = 0x6fffffff,
 316   SHT_LOPROC = 0x70000000,
 317   SHT_HIPROC = 0x7fffffff,
 318   SHT_LOUSER = 0x80000000,
 319   SHT_HIUSER = 0xffffffff,
 320   // The remaining values are not in the standard.
 321   // List of prelink dependencies.
 322   SHT_GNU_LIBLIST = 0x6ffffff7,
 323   // Versions defined by file.
 324   SHT_SUNW_verdef = 0x6ffffffd,
 325   SHT_GNU_verdef = 0x6ffffffd,
 326   // Versions needed by file.
 327   SHT_SUNW_verneed = 0x6ffffffe,
 328   SHT_GNU_verneed = 0x6ffffffe,
 329   // Symbol versions,
 330   SHT_SUNW_versym = 0x6fffffff,
 331   SHT_GNU_versym = 0x6fffffff,
 332 };
 333
 334 // The valid bit flags found in the Shdr sh_flags field.
 335
 336 enum SHF
 337 {
 338   SHF_WRITE = 0x1,
 339   SHF_ALLOC = 0x2,
 340   SHF_EXECINSTR = 0x4,
 341   SHF_MERGE = 0x10,
 342   SHF_STRINGS = 0x20,
 343   SHF_INFO_LINK = 0x40,
 344   SHF_LINK_ORDER = 0x80,
 345   SHF_OS_NONCONFORMING = 0x100,
 346   SHF_GROUP = 0x200,
 347   SHF_TLS = 0x400,
 348   SHF_MASKOS = 0x0ff00000,
 349   SHF_MASKPROC = 0xf0000000
 350 };
 351
 352 // Bit flags which appear in the first 32-bit word of the section data
 353 // of a SHT_GROUP section.
 354
 355 enum
 356 {
 357   GRP_COMDAT = 0x1,
 358   GRP_MASKOS = 0x0ff00000,
 359   GRP_MASKPROC = 0xf0000000
 360 };
 361
 362 // The valid values found in the Phdr p_type field.
 363
 364 enum PT
 365 {
 366   PT_NULL = 0,
 367   PT_LOAD = 1,
 368   PT_DYNAMIC = 2,
 369   PT_INTERP = 3,
 370   PT_NOTE = 4,
 371   PT_SHLIB = 5,
 372   PT_PHDR = 6,
 373   PT_TLS = 7,
 374   PT_LOOS = 0x60000000,
 375   PT_HIOS = 0x6fffffff,
 376   PT_LOPROC = 0x70000000,
 377   PT_HIPROC = 0x7fffffff,
 378   // The remaining values are not in the standard.
 379   // Frame unwind information.
 380   PT_GNU_EH_FRAME = 0x6474e550,
 381   PT_SUNW_EH_FRAME = 0x6474e550,
 382   // Stack flags.
 383   PT_GNU_STACK = 0x6474e551,
 384   // Read only after relocation.
 385   PT_GNU_RELRO = 0x6474e552
 386 };
 387
 388 // The valid bit flags found in the Phdr p_flags field.
 389
 390 enum PF
 391 {
 392   PF_X = 0x1,
 393   PF_W = 0x2,
 394   PF_R = 0x4,
 395   PF_MASKOS = 0x0ff00000,
 396   PF_MASKPROC = 0xf0000000
 397 };
 398
 399 // Symbol binding from Sym st_info field.
 400
 401 enum STB
 402 {
 403   STB_LOCAL = 0,
 404   STB_GLOBAL = 1,
 405   STB_WEAK = 2,
 406   STB_LOOS = 10,
 407   STB_HIOS = 12,
 408   STB_LOPROC = 13,
 409   STB_HIPROC = 15
 410 };
 411
 412 // Symbol types from Sym st_info field.
 413
 414 enum STT
 415 {
 416   STT_NOTYPE = 0,
 417   STT_OBJECT = 1,
 418   STT_FUNC = 2,
 419   STT_SECTION = 3,
 420   STT_FILE = 4,
 421   STT_COMMON = 5,
 422   STT_TLS = 6,
 423   STT_LOOS = 10,
 424   STT_HIOS = 12,
 425   STT_LOPROC = 13,
 426   STT_HIPROC = 15
 427 };
 428
 429 inline STB
 430 elf_st_bind(unsigned char info)
 431 {
 432   return static_cast<STB>(info >> 4);
 433 }
 434
 435 inline STT
 436 elf_st_type(unsigned char info)
 437 {
 438   return static_cast<STT>(info & 0xf);
 439 }
 440
 441 inline unsigned char
 442 elf_st_info(STB bind, STT type)
 443 {
 444   return ((static_cast<unsigned char>(bind) << 4)
 445           + (static_cast<unsigned char>(type) & 0xf));
 446 }
 447
 448 // Symbol visibility from Sym st_other field.
 449
 450 enum STV
 451 {
 452   STV_DEFAULT = 0,
 453   STV_INTERNAL = 1,
 454   STV_HIDDEN = 2,
 455   STV_PROTECTED = 3
 456 };
 457
 458 inline STV
 459 elf_st_visibility(unsigned char other)
 460 {
 461   return static_cast<STV>(other & 0x3);
 462 }
 463
 464 inline unsigned char
 465 elf_st_nonvis(unsigned char other)
 466 {
 467   return static_cast<STV>(other >> 2);
 468 }
 469
 470 inline unsigned char
 471 elf_st_other(STV vis, unsigned char nonvis)
 472 {
 473   return ((nonvis << 2)
 474           + (static_cast<unsigned char>(vis) & 3));
 475 }
 476
 477 // Reloc information from Rel/Rela r_info field.
 478
 479 template<int size>
 480 unsigned int
 481 elf_r_sym(typename Elf_types<size>::Elf_WXword);
 482
 483 template<>
 484 inline unsigned int
 485 elf_r_sym<32>(Elf_Word v)
 486 {
 487   return v >> 8;
 488 }
 489
 490 template<>
 491 inline unsigned int
 492 elf_r_sym<64>(Elf_Xword v)
 493 {
 494   return v >> 32;
 495 }
 496
 497 template<int size>
 498 unsigned int
 499 elf_r_type(typename Elf_types<size>::Elf_WXword);
 500
 501 template<>
 502 inline unsigned int
 503 elf_r_type<32>(Elf_Word v)
 504 {
 505   return v & 0xff;
 506 }
 507
 508 template<>
 509 inline unsigned int
 510 elf_r_type<64>(Elf_Xword v)
 511 {
 512   return v & 0xffffffff;
 513 }
 514
 515 template<int size>
 516 typename Elf_types<size>::Elf_WXword
 517 elf_r_info(unsigned int s, unsigned int t);
 518
 519 template<>
 520 inline Elf_Word
 521 elf_r_info<32>(unsigned int s, unsigned int t)
 522 {
 523   return (s << 8) + (t & 0xff);
 524 }
 525
 526 template<>
 527 inline Elf_Xword
 528 elf_r_info<64>(unsigned int s, unsigned int t)
 529 {
 530   return (static_cast<Elf_Xword>(s) << 32) + (t & 0xffffffff);
 531 }
 532
 533 // Dynamic tags found in the PT_DYNAMIC segment.
 534
 535 enum DT
 536 {
 537   DT_NULL = 0,
 538   DT_NEEDED = 1,
 539   DT_PLTRELSZ = 2,
 540   DT_PLTGOT = 3,
 541   DT_HASH = 4,
 542   DT_STRTAB = 5,
 543   DT_SYMTAB = 6,
 544   DT_RELA = 7,
 545   DT_RELASZ = 8,
 546   DT_RELAENT = 9,
 547   DT_STRSZ = 10,
 548   DT_SYMENT = 11,
 549   DT_INIT = 12,
 550   DT_FINI = 13,
 551   DT_SONAME = 14,
 552   DT_RPATH = 15,
 553   DT_SYMBOLIC = 16,
 554   DT_REL = 17,
 555   DT_RELSZ = 18,
 556   DT_RELENT = 19,
 557   DT_PLTREL = 20,
 558   DT_DEBUG = 21,
 559   DT_TEXTREL = 22,
 560   DT_JMPREL = 23,
 561   DT_BIND_NOW = 24,
 562   DT_INIT_ARRAY = 25,
 563   DT_FINI_ARRAY = 26,
 564   DT_INIT_ARRAYSZ = 27,
 565   DT_FINI_ARRAYSZ = 28,
 566   DT_RUNPATH = 29,
 567   DT_FLAGS = 30,
 568   DT_ENCODING = 32,
 569   DT_PREINIT_ARRAY = 33,
 570   DT_PREINIT_ARRAYSZ = 33,
 571   DT_LOOS = 0x6000000d,
 572   DT_HIOS = 0x6ffff000,
 573   DT_LOPROC = 0x70000000,
 574   DT_HIPROC = 0x7fffffff,
 575
 576   // The remaining values are extensions used by GNU or Solaris.
 577   DT_VALRNGLO = 0x6ffffd00,
 578   DT_GNU_PRELINKED = 0x6ffffdf5,
 579   DT_GNU_CONFLICTSZ = 0x6ffffdf6,
 580   DT_GNU_LIBLISTSZ = 0x6ffffdf7,
 581   DT_CHECKSUM = 0x6ffffdf8,
 582   DT_PLTPADSZ = 0x6ffffdf9,
 583   DT_MOVEENT = 0x6ffffdfa,
 584   DT_MOVESZ = 0x6ffffdfb,
 585   DT_FEATURE = 0x6ffffdfc,
 586   DT_POSFLAG_1 = 0x6ffffdfd,
 587   DT_SYMINSZ = 0x6ffffdfe,
 588   DT_SYMINENT = 0x6ffffdff,
 589   DT_VALRNGHI = 0x6ffffdff,
 590
 591   DT_ADDRRNGLO = 0x6ffffe00,
 592   DT_GNU_HASH = 0x6ffffef5,
 593   DT_TLSDESC_PLT = 0x6ffffef6,
 594   DT_TLSDESC_GOT = 0x6ffffef7,
 595   DT_GNU_CONFLICT = 0x6ffffef8,
 596   DT_GNU_LIBLIST = 0x6ffffef9,
 597   DT_CONFIG = 0x6ffffefa,
 598   DT_DEPAUDIT = 0x6ffffefb,
 599   DT_AUDIT = 0x6ffffefc,
 600   DT_PLTPAD = 0x6ffffefd,
 601   DT_MOVETAB = 0x6ffffefe,
 602   DT_SYMINFO = 0x6ffffeff,
 603   DT_ADDRRNGHI = 0x6ffffeff,
 604
 605   DT_RELACOUNT = 0x6ffffff9,
 606   DT_RELCOUNT = 0x6ffffffa,
 607   DT_FLAGS_1 = 0x6ffffffb,
 608   DT_VERDEF = 0x6ffffffc,
 609   DT_VERDEFNUM = 0x6ffffffd,
 610   DT_VERNEED = 0x6ffffffe,
 611   DT_VERNEEDNUM = 0x6fffffff,
 612
 613   DT_VERSYM = 0x6ffffff0,
 614
 615   DT_AUXILIARY = 0x7ffffffd,
 616   DT_USED = 0x7ffffffe,
 617   DT_FILTER = 0x7fffffff
 618 };
 619
 620 // Flags found in the DT_FLAGS dynamic element.
 621
 622 enum DF
 623 {
 624   DF_ORIGIN = 0x1,
 625   DF_SYMBOLIC = 0x2,
 626   DF_TEXTREL = 0x4,
 627   DF_BIND_NOW = 0x8,
 628   DF_STATIC_TLS = 0x10
 629 };
 630
 631 // Version numbers which appear in the vd_version field of a Verdef
 632 // structure.
 633
 634 const int VER_DEF_NONE = 0;
 635 const int VER_DEF_CURRENT = 1;
 636
 637 // Version numbers which appear in the vn_version field of a Verneed
 638 // structure.
 639
 640 const int VER_NEED_NONE = 0;
 641 const int VER_NEED_CURRENT = 1;
 642
 643 // Bit flags which appear in vd_flags of Verdef and vna_flags of
 644 // Vernaux.
 645
 646 const int VER_FLG_BASE = 0x1;
 647 const int VER_FLG_WEAK = 0x2;
 648
 649 // Special constants found in the SHT_GNU_versym entries.
 650
 651 const int VER_NDX_LOCAL = 0;
 652 const int VER_NDX_GLOBAL = 1;
 653
 654 // A SHT_GNU_versym section holds 16-bit words.  This bit is set if
 655 // the symbol is hidden and can only be seen when referenced using an
 656 // explicit version number.  This is a GNU extension.
 657
 658 const int VERSYM_HIDDEN = 0x8000;
 659
 660 // This is the mask for the rest of the data in a word read from a
 661 // SHT_GNU_versym section.
 662
 663 const int VERSYM_VERSION = 0x7fff;
 664
 665 } // End namespace elfcpp.
 666
 667 // Include internal details after defining the types.
 668 #include "elfcpp_internal.h"
 669
 670 namespace elfcpp
 671 {
 672
 673 // The offset of the ELF file header in the ELF file.
 674
 675 const int file_header_offset = 0;
 676
 677 // ELF structure sizes.
 678
 679 template<int size>
 680 struct Elf_sizes
 681 {
 682   // Size of ELF file header.
 683   static const int ehdr_size = sizeof(internal::Ehdr_data<size>);
 684   // Size of ELF segment header.
 685   static const int phdr_size = sizeof(internal::Phdr_data<size>);
 686   // Size of ELF section header.
 687   static const int shdr_size = sizeof(internal::Shdr_data<size>);
 688   // Size of ELF symbol table entry.
 689   static const int sym_size = sizeof(internal::Sym_data<size>);
 690   // Sizes of ELF reloc entries.
 691   static const int rel_size = sizeof(internal::Rel_data<size>);
 692   static const int rela_size = sizeof(internal::Rela_data<size>);
 693   // Size of ELF dynamic entry.
 694   static const int dyn_size = sizeof(internal::Dyn_data<size>);
 695 };
 696
 697 // Accessor class for the ELF file header.
 698
 699 template<int size, bool big_endian>
 700 class Ehdr
 701 {
 702  public:
 703   Ehdr(const unsigned char* p)
 704     : p_(reinterpret_cast<const internal::Ehdr_data<size>*>(p))
 705   { }
 706
 707   template<typename File>
 708   Ehdr(File* file, typename File::Location loc)
 709     : p_(reinterpret_cast<const internal::Ehdr_data<size>*>(
 710            file->view(loc.file_offset, loc.data_size).data()))
 711   { }
 712
 713   const unsigned char*
 714   get_e_ident() const
 715   { return this->p_->e_ident; }
 716
 717   Elf_Half
 718   get_e_type() const
 719   { return Convert<16, big_endian>::convert_host(this->p_->e_type); }
 720
 721   Elf_Half
 722   get_e_machine() const
 723   { return Convert<16, big_endian>::convert_host(this->p_->e_machine); }
 724
 725   Elf_Word
 726   get_e_version() const
 727   { return Convert<32, big_endian>::convert_host(this->p_->e_version); }
 728
 729   typename Elf_types<size>::Elf_Addr
 730   get_e_entry() const
 731   { return Convert<size, big_endian>::convert_host(this->p_->e_entry); }
 732
 733   typename Elf_types<size>::Elf_Off
 734   get_e_phoff() const
 735   { return Convert<size, big_endian>::convert_host(this->p_->e_phoff); }
 736
 737   typename Elf_types<size>::Elf_Off
 738   get_e_shoff() const
 739   { return Convert<size, big_endian>::convert_host(this->p_->e_shoff); }
 740
 741   Elf_Word
 742   get_e_flags() const
 743   { return Convert<32, big_endian>::convert_host(this->p_->e_flags); }
 744
 745   Elf_Half
 746   get_e_ehsize() const
 747   { return Convert<16, big_endian>::convert_host(this->p_->e_ehsize); }
 748
 749   Elf_Half
 750   get_e_phentsize() const
 751   { return Convert<16, big_endian>::convert_host(this->p_->e_phentsize); }
 752
 753   Elf_Half
 754   get_e_phnum() const
 755   { return Convert<16, big_endian>::convert_host(this->p_->e_phnum); }
 756
 757   Elf_Half
 758   get_e_shentsize() const
 759   { return Convert<16, big_endian>::convert_host(this->p_->e_shentsize); }
 760
 761   Elf_Half
 762   get_e_shnum() const
 763   { return Convert<16, big_endian>::convert_host(this->p_->e_shnum); }
 764
 765   Elf_Half
 766   get_e_shstrndx() const
 767   { return Convert<16, big_endian>::convert_host(this->p_->e_shstrndx); }
 768
 769  private:
 770   const internal::Ehdr_data<size>* p_;
 771 };
 772
 773 // Write class for the ELF file header.
 774
 775 template<int size, bool big_endian>
 776 class Ehdr_write
 777 {
 778  public:
 779   Ehdr_write(unsigned char* p)
 780     : p_(reinterpret_cast<internal::Ehdr_data<size>*>(p))
 781   { }
 782
 783   void
 784   put_e_ident(const unsigned char v[EI_NIDENT]) const
 785   { memcpy(this->p_->e_ident, v, EI_NIDENT); }
 786
 787   void
 788   put_e_type(Elf_Half v)
 789   { this->p_->e_type = Convert<16, big_endian>::convert_host(v); }
 790
 791   void
 792   put_e_machine(Elf_Half v)
 793   { this->p_->e_machine = Convert<16, big_endian>::convert_host(v); }
 794
 795   void
 796   put_e_version(Elf_Word v)
 797   { this->p_->e_version = Convert<32, big_endian>::convert_host(v); }
 798
 799   void
 800   put_e_entry(typename Elf_types<size>::Elf_Addr v)
 801   { this->p_->e_entry = Convert<size, big_endian>::convert_host(v); }
 802
 803   void
 804   put_e_phoff(typename Elf_types<size>::Elf_Off v)
 805   { this->p_->e_phoff = Convert<size, big_endian>::convert_host(v); }
 806
 807   void
 808   put_e_shoff(typename Elf_types<size>::Elf_Off v)
 809   { this->p_->e_shoff = Convert<size, big_endian>::convert_host(v); }
 810
 811   void
 812   put_e_flags(Elf_Word v)
 813   { this->p_->e_flags = Convert<32, big_endian>::convert_host(v); }
 814
 815   void
 816   put_e_ehsize(Elf_Half v)
 817   { this->p_->e_ehsize = Convert<16, big_endian>::convert_host(v); }
 818
 819   void
 820   put_e_phentsize(Elf_Half v)
 821   { this->p_->e_phentsize = Convert<16, big_endian>::convert_host(v); }
 822
 823   void
 824   put_e_phnum(Elf_Half v)
 825   { this->p_->e_phnum = Convert<16, big_endian>::convert_host(v); }
 826
 827   void
 828   put_e_shentsize(Elf_Half v)
 829   { this->p_->e_shentsize = Convert<16, big_endian>::convert_host(v); }
 830
 831   void
 832   put_e_shnum(Elf_Half v)
 833   { this->p_->e_shnum = Convert<16, big_endian>::convert_host(v); }
 834
 835   void
 836   put_e_shstrndx(Elf_Half v)
 837   { this->p_->e_shstrndx = Convert<16, big_endian>::convert_host(v); }
 838
 839  private:
 840   internal::Ehdr_data<size>* p_;
 841 };
 842
 843 // Accessor class for an ELF section header.
 844
 845 template<int size, bool big_endian>
 846 class Shdr
 847 {
 848  public:
 849   Shdr(const unsigned char* p)
 850     : p_(reinterpret_cast<const internal::Shdr_data<size>*>(p))
 851   { }
 852
 853   template<typename File>
 854   Shdr(File* file, typename File::Location loc)
 855     : p_(reinterpret_cast<const internal::Shdr_data<size>*>(
 856            file->view(loc.file_offset, loc.data_size).data()))
 857   { }
 858
 859   Elf_Word
 860   get_sh_name() const
 861   { return Convert<32, big_endian>::convert_host(this->p_->sh_name); }
 862
 863   Elf_Word
 864   get_sh_type() const
 865   { return Convert<32, big_endian>::convert_host(this->p_->sh_type); }
 866
 867   typename Elf_types<size>::Elf_WXword
 868   get_sh_flags() const
 869   { return Convert<size, big_endian>::convert_host(this->p_->sh_flags); }
 870
 871   typename Elf_types<size>::Elf_Addr
 872   get_sh_addr() const
 873   { return Convert<size, big_endian>::convert_host(this->p_->sh_addr); }
 874
 875   typename Elf_types<size>::Elf_Off
 876   get_sh_offset() const
 877   { return Convert<size, big_endian>::convert_host(this->p_->sh_offset); }
 878
 879   typename Elf_types<size>::Elf_WXword
 880   get_sh_size() const
 881   { return Convert<size, big_endian>::convert_host(this->p_->sh_size); }
 882
 883   Elf_Word
 884   get_sh_link() const
 885   { return Convert<32, big_endian>::convert_host(this->p_->sh_link); }
 886
 887   Elf_Word
 888   get_sh_info() const
 889   { return Convert<32, big_endian>::convert_host(this->p_->sh_info); }
 890
 891   typename Elf_types<size>::Elf_WXword
 892   get_sh_addralign() const
 893   { return
 894       Convert<size, big_endian>::convert_host(this->p_->sh_addralign); }
 895
 896   typename Elf_types<size>::Elf_WXword
 897   get_sh_entsize() const
 898   { return Convert<size, big_endian>::convert_host(this->p_->sh_entsize); }
 899
 900  private:
 901   const internal::Shdr_data<size>* p_;
 902 };
 903
 904 // Write class for an ELF section header.
 905
 906 template<int size, bool big_endian>
 907 class Shdr_write
 908 {
 909  public:
 910   Shdr_write(unsigned char* p)
 911     : p_(reinterpret_cast<internal::Shdr_data<size>*>(p))
 912   { }
 913
 914   void
 915   put_sh_name(Elf_Word v)
 916   { this->p_->sh_name = Convert<32, big_endian>::convert_host(v); }
 917
 918   void
 919   put_sh_type(Elf_Word v)
 920   { this->p_->sh_type = Convert<32, big_endian>::convert_host(v); }
 921
 922   void
 923   put_sh_flags(typename Elf_types<size>::Elf_WXword v)
 924   { this->p_->sh_flags = Convert<size, big_endian>::convert_host(v); }
 925
 926   void
 927   put_sh_addr(typename Elf_types<size>::Elf_Addr v)
 928   { this->p_->sh_addr = Convert<size, big_endian>::convert_host(v); }
 929
 930   void
 931   put_sh_offset(typename Elf_types<size>::Elf_Off v)
 932   { this->p_->sh_offset = Convert<size, big_endian>::convert_host(v); }
 933
 934   void
 935   put_sh_size(typename Elf_types<size>::Elf_WXword v)
 936   { this->p_->sh_size = Convert<size, big_endian>::convert_host(v); }
 937
 938   void
 939   put_sh_link(Elf_Word v)
 940   { this->p_->sh_link = Convert<32, big_endian>::convert_host(v); }
 941
 942   void
 943   put_sh_info(Elf_Word v)
 944   { this->p_->sh_info = Convert<32, big_endian>::convert_host(v); }
 945
 946   void
 947   put_sh_addralign(typename Elf_types<size>::Elf_WXword v)
 948   { this->p_->sh_addralign = Convert<size, big_endian>::convert_host(v); }
 949
 950   void
 951   put_sh_entsize(typename Elf_types<size>::Elf_WXword v)
 952   { this->p_->sh_entsize = Convert<size, big_endian>::convert_host(v); }
 953
 954  private:
 955   internal::Shdr_data<size>* p_;
 956 };
 957
 958 // Accessor class for an ELF segment header.
 959
 960 template<int size, bool big_endian>
 961 class Phdr
 962 {
 963  public:
 964   Phdr(const unsigned char* p)
 965     : p_(reinterpret_cast<const internal::Phdr_data<size>*>(p))
 966   { }
 967
 968   template<typename File>
 969   Phdr(File* file, typename File::Location loc)
 970     : p_(reinterpret_cast<internal::Phdr_data<size>*>(
 971            file->view(loc.file_offset, loc.data_size).data()))
 972   { }
 973
 974   Elf_Word
 975   get_p_type() const
 976   { return Convert<32, big_endian>::convert_host(this->p_->p_type); }
 977
 978   typename Elf_types<size>::Elf_Off
 979   get_p_offset() const
 980   { return Convert<size, big_endian>::convert_host(this->p_->p_offset); }
 981
 982   typename Elf_types<size>::Elf_Addr
 983   get_p_vaddr() const
 984   { return Convert<size, big_endian>::convert_host(this->p_->p_vaddr); }
 985
 986   typename Elf_types<size>::Elf_Addr
 987   get_p_paddr() const
 988   { return Convert<size, big_endian>::convert_host(this->p_->p_paddr); }
 989
 990   typename Elf_types<size>::Elf_WXword
 991   get_p_filesz() const
 992   { return Convert<size, big_endian>::convert_host(this->p_->p_filesz); }
 993
 994   typename Elf_types<size>::Elf_WXword
 995   get_p_memsz() const
 996   { return Convert<size, big_endian>::convert_host(this->p_->p_memsz); }
 997
 998   Elf_Word
 999   get_p_flags() const
1000   { return Convert<32, big_endian>::convert_host(this->p_->p_flags); }
1001
1002   typename Elf_types<size>::Elf_WXword
1003   get_p_align() const
1004   { return Convert<size, big_endian>::convert_host(this->p_->p_align); }
1005
1006  private:
1007   const internal::Phdr_data<size>* p_;
1008 };
1009
1010 // Write class for an ELF segment header.
1011
1012 template<int size, bool big_endian>
1013 class Phdr_write
1014 {
1015  public:
1016   Phdr_write(unsigned char* p)
1017     : p_(reinterpret_cast<internal::Phdr_data<size>*>(p))
1018   { }
1019
1020   void
1021   put_p_type(Elf_Word v)
1022   { this->p_->p_type = Convert<32, big_endian>::convert_host(v); }
1023
1024   void
1025   put_p_offset(typename Elf_types<size>::Elf_Off v)
1026   { this->p_->p_offset = Convert<size, big_endian>::convert_host(v); }
1027
1028   void
1029   put_p_vaddr(typename Elf_types<size>::Elf_Addr v)
1030   { this->p_->p_vaddr = Convert<size, big_endian>::convert_host(v); }
1031
1032   void
1033   put_p_paddr(typename Elf_types<size>::Elf_Addr v)
1034   { this->p_->p_paddr = Convert<size, big_endian>::convert_host(v); }
1035
1036   void
1037   put_p_filesz(typename Elf_types<size>::Elf_WXword v)
1038   { this->p_->p_filesz = Convert<size, big_endian>::convert_host(v); }
1039
1040   void
1041   put_p_memsz(typename Elf_types<size>::Elf_WXword v)
1042   { this->p_->p_memsz = Convert<size, big_endian>::convert_host(v); }
1043
1044   void
1045   put_p_flags(Elf_Word v)
1046   { this->p_->p_flags = Convert<32, big_endian>::convert_host(v); }
1047
1048   void
1049   put_p_align(typename Elf_types<size>::Elf_WXword v)
1050   { this->p_->p_align = Convert<size, big_endian>::convert_host(v); }
1051
1052  private:
1053   internal::Phdr_data<size>* p_;
1054 };
1055
1056 // Accessor class for an ELF symbol table entry.
1057
1058 template<int size, bool big_endian>
1059 class Sym
1060 {
1061  public:
1062   Sym(const unsigned char* p)
1063     : p_(reinterpret_cast<const internal::Sym_data<size>*>(p))
1064   { }
1065
1066   template<typename File>
1067   Sym(File* file, typename File::Location loc)
1068     : p_(reinterpret_cast<const internal::Sym_data<size>*>(
1069            file->view(loc.file_offset, loc.data_size).data()))
1070   { }
1071
1072   Elf_Word
1073   get_st_name() const
1074   { return Convert<32, big_endian>::convert_host(this->p_->st_name); }
1075
1076   typename Elf_types<size>::Elf_Addr
1077   get_st_value() const
1078   { return Convert<size, big_endian>::convert_host(this->p_->st_value); }
1079
1080   typename Elf_types<size>::Elf_WXword
1081   get_st_size() const
1082   { return Convert<size, big_endian>::convert_host(this->p_->st_size); }
1083
1084   unsigned char
1085   get_st_info() const
1086   { return this->p_->st_info; }
1087
1088   STB
1089   get_st_bind() const
1090   { return elf_st_bind(this->get_st_info()); }
1091
1092   STT
1093   get_st_type() const
1094   { return elf_st_type(this->get_st_info()); }
1095
1096   unsigned char
1097   get_st_other() const
1098   { return this->p_->st_other; }
1099
1100   STV
1101   get_st_visibility() const
1102   { return elf_st_visibility(this->get_st_other()); }
1103
1104   unsigned char
1105   get_st_nonvis() const
1106   { return elf_st_nonvis(this->get_st_other()); }
1107
1108   Elf_Half
1109   get_st_shndx() const
1110   { return Convert<16, big_endian>::convert_host(this->p_->st_shndx); }
1111
1112  private:
1113   const internal::Sym_data<size>* p_;
1114 };
1115
1116 // Writer class for an ELF symbol table entry.
1117
1118 template<int size, bool big_endian>
1119 class Sym_write
1120 {
1121  public:
1122   Sym_write(unsigned char* p)
1123     : p_(reinterpret_cast<internal::Sym_data<size>*>(p))
1124   { }
1125
1126   void
1127   put_st_name(Elf_Word v)
1128   { this->p_->st_name = Convert<32, big_endian>::convert_host(v); }
1129
1130   void
1131   put_st_value(typename Elf_types<size>::Elf_Addr v)
1132   { this->p_->st_value = Convert<size, big_endian>::convert_host(v); }
1133
1134   void
1135   put_st_size(typename Elf_types<size>::Elf_WXword v)
1136   { this->p_->st_size = Convert<size, big_endian>::convert_host(v); }
1137
1138   void
1139   put_st_info(unsigned char v)
1140   { this->p_->st_info = v; }
1141
1142   void
1143   put_st_info(STB bind, STT type)
1144   { this->p_->st_info = elf_st_info(bind, type); }
1145
1146   void
1147   put_st_other(unsigned char v)
1148   { this->p_->st_other = v; }
1149
1150   void
1151   put_st_other(STV vis, unsigned char nonvis)
1152   { this->p_->st_other = elf_st_other(vis, nonvis); }
1153
1154   void
1155   put_st_shndx(Elf_Half v)
1156   { this->p_->st_shndx = Convert<16, big_endian>::convert_host(v); }
1157
1158   Sym<size, big_endian>
1159   sym()
1160   { return Sym<size, big_endian>(reinterpret_cast<unsigned char*>(this->p_)); }
1161
1162  private:
1163   internal::Sym_data<size>* p_;
1164 };
1165
1166 // Accessor classes for an ELF REL relocation entry.
1167
1168 template<int size, bool big_endian>
1169 class Rel
1170 {
1171  public:
1172   Rel(const unsigned char* p)
1173     : p_(reinterpret_cast<const internal::Rel_data<size>*>(p))
1174   { }
1175
1176   template<typename File>
1177   Rel(File* file, typename File::Location loc)
1178     : p_(reinterpret_cast<const internal::Rel_data<size>*>(
1179            file->view(loc.file_offset, loc.data_size).data()))
1180   { }
1181
1182   typename Elf_types<size>::Elf_Addr
1183   get_r_offset() const
1184   { return Convert<size, big_endian>::convert_host(this->p_->r_offset); }
1185
1186   typename Elf_types<size>::Elf_WXword
1187   get_r_info() const
1188   { return Convert<size, big_endian>::convert_host(this->p_->r_info); }
1189
1190  private:
1191   const internal::Rel_data<size>* p_;
1192 };
1193
1194 // Writer class for an ELF Rel relocation.
1195
1196 template<int size, bool big_endian>
1197 class Rel_write
1198 {
1199  public:
1200   Rel_write(unsigned char* p)
1201     : p_(reinterpret_cast<internal::Rel_data<size>*>(p))
1202   { }
1203
1204   void
1205   put_r_offset(typename Elf_types<size>::Elf_Addr v)
1206   { this->p_->r_offset = Convert<size, big_endian>::convert_host(v); }
1207
1208   void
1209   put_r_info(typename Elf_types<size>::Elf_WXword v)
1210   { this->p_->r_info = Convert<size, big_endian>::convert_host(v); }
1211
1212  private:
1213   internal::Rel_data<size>* p_;
1214 };
1215
1216 // Accessor class for an ELF Rela relocation.
1217
1218 template<int size, bool big_endian>
1219 class Rela
1220 {
1221  public:
1222   Rela(const unsigned char* p)
1223     : p_(reinterpret_cast<const internal::Rela_data<size>*>(p))
1224   { }
1225
1226   template<typename File>
1227   Rela(File* file, typename File::Location loc)
1228     : p_(reinterpret_cast<const internal::Rela_data<size>*>(
1229            file->view(loc.file_offset, loc.data_size).data()))
1230   { }
1231
1232   typename Elf_types<size>::Elf_Addr
1233   get_r_offset() const
1234   { return Convert<size, big_endian>::convert_host(this->p_->r_offset); }
1235
1236   typename Elf_types<size>::Elf_WXword
1237   get_r_info() const
1238   { return Convert<size, big_endian>::convert_host(this->p_->r_info); }
1239
1240   typename Elf_types<size>::Elf_Swxword
1241   get_r_addend() const
1242   { return Convert<size, big_endian>::convert_host(this->p_->r_addend); }
1243
1244  private:
1245   const internal::Rela_data<size>* p_;
1246 };
1247
1248 // Writer class for an ELF Rela relocation.
1249
1250 template<int size, bool big_endian>
1251 class Rela_write
1252 {
1253  public:
1254   Rela_write(unsigned char* p)
1255     : p_(reinterpret_cast<internal::Rela_data<size>*>(p))
1256   { }
1257
1258   void
1259   put_r_offset(typename Elf_types<size>::Elf_Addr v)
1260   { this->p_->r_offset = Convert<size, big_endian>::convert_host(v); }
1261
1262   void
1263   put_r_info(typename Elf_types<size>::Elf_WXword v)
1264   { this->p_->r_info = Convert<size, big_endian>::convert_host(v); }
1265
1266   void
1267   put_r_addend(typename Elf_types<size>::Elf_Swxword v)
1268   { this->p_->r_addend = Convert<size, big_endian>::convert_host(v); }
1269
1270  private:
1271   internal::Rela_data<size>* p_;
1272 };
1273
1274 // Accessor classes for entries in the ELF SHT_DYNAMIC section aka
1275 // PT_DYNAMIC segment.
1276
1277 template<int size, bool big_endian>
1278 class Dyn
1279 {
1280  public:
1281   Dyn(const unsigned char* p)
1282     : p_(reinterpret_cast<const internal::Dyn_data<size>*>(p))
1283   { }
1284
1285   template<typename File>
1286   Dyn(File* file, typename File::Location loc)
1287     : p_(reinterpret_cast<const internal::Dyn_data<size>*>(
1288            file->view(loc.file_offset, loc.data_size).data()))
1289   { }
1290
1291   typename Elf_types<size>::Elf_Swxword
1292   get_d_tag() const
1293   { return Convert<size, big_endian>::convert_host(this->p_->d_tag); }
1294
1295   typename Elf_types<size>::Elf_WXword
1296   get_d_val() const
1297   { return Convert<size, big_endian>::convert_host(this->p_->d_val); }
1298
1299   typename Elf_types<size>::Elf_Addr
1300   get_d_ptr() const
1301   { return Convert<size, big_endian>::convert_host(this->p_->d_val); }
1302
1303  private:
1304   const internal::Dyn_data<size>* p_;
1305 };
1306
1307 // Accessor classes for entries in the ELF SHT_GNU_verdef section.
1308
1309 template<int size, bool big_endian>
1310 class Verdef
1311 {
1312  public:
1313   Verdef(const unsigned char* p)
1314     : p_(reinterpret_cast<const internal::Verdef_data*>(p))
1315   { }
1316
1317   template<typename File>
1318   Verdef(File* file, typename File::Location loc)
1319     : p_(reinterpret_cast<const internal::Verdef_data*>(
1320            file->view(loc.file_offset, loc.data_size).data()))
1321   { }
1322
1323   Elf_Half
1324   get_vd_version() const
1325   { return Convert<16, big_endian>::convert_host(this->p_->vd_version); }
1326
1327   Elf_Half
1328   get_vd_flags() const
1329   { return Convert<16, big_endian>::convert_host(this->p_->vd_flags); }
1330
1331   Elf_Half
1332   get_vd_ndx() const
1333   { return Convert<16, big_endian>::convert_host(this->p_->vd_ndx); }
1334
1335   Elf_Half
1336   get_vd_cnt() const
1337   { return Convert<16, big_endian>::convert_host(this->p_->vd_cnt); }
1338
1339   Elf_Word
1340   get_vd_hash() const
1341   { return Convert<32, big_endian>::convert_host(this->p_->vd_hash); }
1342
1343   Elf_Word
1344   get_vd_aux() const
1345   { return Convert<32, big_endian>::convert_host(this->p_->vd_aux); }
1346
1347   Elf_Word
1348   get_vd_next() const
1349   { return Convert<32, big_endian>::convert_host(this->p_->vd_next); }
1350
1351  private:
1352   const internal::Verdef_data* p_;
1353 };
1354
1355 // Accessor classes for auxiliary entries in the ELF SHT_GNU_verdef
1356 // section.
1357
1358 template<int size, bool big_endian>
1359 class Verdaux
1360 {
1361  public:
1362   Verdaux(const unsigned char* p)
1363     : p_(reinterpret_cast<const internal::Verdaux_data*>(p))
1364   { }
1365
1366   template<typename File>
1367   Verdaux(File* file, typename File::Location loc)
1368     : p_(reinterpret_cast<const internal::Verdaux_data*>(
1369            file->view(loc.file_offset, loc.data_size).data()))
1370   { }
1371
1372   Elf_Word
1373   get_vda_name() const
1374   { return Convert<32, big_endian>::convert_host(this->p_->vda_name); }
1375
1376   Elf_Word
1377   get_vda_next() const
1378   { return Convert<32, big_endian>::convert_host(this->p_->vda_next); }
1379
1380  private:
1381   const internal::Verdaux_data* p_;
1382 };
1383
1384 // Accessor classes for entries in the ELF SHT_GNU_verneed section.
1385
1386 template<int size, bool big_endian>
1387 class Verneed
1388 {
1389  public:
1390   Verneed(const unsigned char* p)
1391     : p_(reinterpret_cast<const internal::Verneed_data*>(p))
1392   { }
1393
1394   template<typename File>
1395   Verneed(File* file, typename File::Location loc)
1396     : p_(reinterpret_cast<const internal::Verneed_data*>(
1397            file->view(loc.file_offset, loc.data_size).data()))
1398   { }
1399
1400   Elf_Half
1401   get_vn_version() const
1402   { return Convert<16, big_endian>::convert_host(this->p_->vn_version); }
1403
1404   Elf_Half
1405   get_vn_cnt() const
1406   { return Convert<16, big_endian>::convert_host(this->p_->vn_cnt); }
1407
1408   Elf_Word
1409   get_vn_file() const
1410   { return Convert<32, big_endian>::convert_host(this->p_->vn_file); }
1411
1412   Elf_Word
1413   get_vn_aux() const
1414   { return Convert<32, big_endian>::convert_host(this->p_->vn_aux); }
1415
1416   Elf_Word
1417   get_vn_next() const
1418   { return Convert<32, big_endian>::convert_host(this->p_->vn_next); }
1419
1420  private:
1421   const internal::Verneed_data* p_;
1422 };
1423
1424 // Accessor classes for auxiliary entries in the ELF SHT_GNU_verneed
1425 // section.
1426
1427 template<int size, bool big_endian>
1428 class Vernaux
1429 {
1430  public:
1431   Vernaux(const unsigned char* p)
1432     : p_(reinterpret_cast<const internal::Vernaux_data*>(p))
1433   { }
1434
1435   template<typename File>
1436   Vernaux(File* file, typename File::Location loc)
1437     : p_(reinterpret_cast<const internal::Vernaux_data*>(
1438            file->view(loc.file_offset, loc.data_size).data()))
1439   { }
1440
1441   Elf_Word
1442   get_vna_hash() const
1443   { return Convert<32, big_endian>::convert_host(this->p_->vna_hash); }
1444
1445   Elf_Half
1446   get_vna_flags() const
1447   { return Convert<16, big_endian>::convert_host(this->p_->vna_flags); }
1448
1449   Elf_Half
1450   get_vna_other() const
1451   { return Convert<16, big_endian>::convert_host(this->p_->vna_other); }
1452
1453   Elf_Word
1454   get_vna_name() const
1455   { return Convert<32, big_endian>::convert_host(this->p_->vna_name); }
1456
1457   Elf_Word
1458   get_vna_next() const
1459   { return Convert<32, big_endian>::convert_host(this->p_->vna_next); }
1460
1461  private:
1462   const internal::Vernaux_data* p_;
1463 };
1464
1465
1466 } // End namespace elfcpp.
1467
1468 #endif // !defined(ELFPCP_H)