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
  10 #include <stdint.h>
  11
  12 namespace elfcpp
  13 {
  14
  15 // Basic ELF types.
  16
  17 // These types are always the same size.
  18
  19 typedef uint16_t Elf_Half;
  20 typedef uint32_t Elf_Word;
  21 typedef int32_t Elf_Sword;
  22 typedef uint64_t Elf_Xword;
  23 typedef int64_t Elf_Sxword;
  24
  25 // These types vary in size depending on the ELF file class.  The
  26 // template parameter should be 32 or 64.
  27
  28 template<int size>
  29 struct Elf_types;
  30
  31 template<>
  32 struct Elf_types<32>
  33 {
  34   typedef uint32_t Elf_Addr;
  35   typedef uint32_t Elf_Off;
  36   typedef uint32_t Elf_WXword;
  37   typedef int32_t Elf_Swxword;
  38 };
  39
  40 template<>
  41 struct Elf_types<64>
  42 {
  43   typedef uint64_t Elf_Addr;
  44   typedef uint64_t Elf_Off;
  45   typedef uint64_t Elf_WXword;
  46   typedef int64_t Elf_Swxword;
  47 };
  48
  49 // Offsets within the Ehdr e_ident field.
  50
  51 const int EI_MAG0 = 0;
  52 const int EI_MAG1 = 1;
  53 const int EI_MAG2 = 2;
  54 const int EI_MAG3 = 3;
  55 const int EI_CLASS = 4;
  56 const int EI_DATA = 5;
  57 const int EI_VERSION = 6;
  58 const int EI_OSABI = 7;
  59 const int EI_ABIVERSION = 8;
  60 const int EI_PAD = 9;
  61 const int EI_NIDENT = 16;
  62
  63 // The valid values found in Ehdr e_ident[EI_MAG0 through EI_MAG3].
  64
  65 const int ELFMAG0 = 0x7f;
  66 const int ELFMAG1 = 'E';
  67 const int ELFMAG2 = 'L';
  68 const int ELFMAG3 = 'F';
  69
  70 // The valid values found in Ehdr e_ident[EI_CLASS].
  71
  72 enum
  73 {
  74   ELFCLASSNONE = 0,
  75   ELFCLASS32 = 1,
  76   ELFCLASS64 = 2
  77 };
  78
  79 // The valid values found in Ehdr e_ident[EI_DATA].
  80
  81 enum
  82 {
  83   ELFDATANONE = 0,
  84   ELFDATA2LSB = 1,
  85   ELFDATA2MSB = 2
  86 };
  87
  88 // The valid values found in Ehdr e_ident[EI_VERSION] and e_version.
  89
  90 enum
  91 {
  92   EV_NONE = 0,
  93   EV_CURRENT = 1
  94 };
  95
  96 // The valid values found in Ehdr e_ident[EI_OSABI].
  97
  98 enum ELFOSABI
  99 {
 100   ELFOSABI_NONE = 0,
 101   ELFOSABI_HPUX = 1,
 102   ELFOSABI_NETBSD = 2,
 103   // ELFOSABI_LINUX is not listed in the ELF standard.
 104   ELFOSABI_LINUX = 3,
 105   // ELFOSABI_HURD is not listed in the ELF standard.
 106   ELFOSABI_HURD = 4,
 107   ELFOSABI_SOLARIS = 6,
 108   ELFOSABI_AIX = 7,
 109   ELFOSABI_IRIX = 8,
 110   ELFOSABI_FREEBSD = 9,
 111   ELFOSABI_TRU64 = 10,
 112   ELFOSABI_MODESTO = 11,
 113   ELFOSABI_OPENBSD = 12,
 114   ELFOSABI_OPENVMS = 13,
 115   ELFOSABI_NSK = 14,
 116   ELFOSABI_AROS = 15,
 117   // A GNU extension for the ARM.
 118   ELFOSABI_ARM = 97,
 119   // A GNU extension for the MSP.
 120   ELFOSABI_STANDALONE = 255
 121 };
 122
 123 // The valid values found in the Ehdr e_type field.
 124
 125 enum ET
 126 {
 127   ET_NONE = 0,
 128   ET_REL = 1,
 129   ET_EXEC = 2,
 130   ET_DYN = 3,
 131   ET_CORE = 4,
 132   ET_LOOS = 0xfe00,
 133   ET_HIOS = 0xfeff,
 134   ET_LOPROC = 0xff00,
 135   ET_HIPROC = 0xffff
 136 };
 137
 138 // The valid values found in the Ehdr e_machine field.
 139
 140 enum EM
 141 {
 142   EM_NONE = 0,
 143   EM_M32 = 1,
 144   EM_SPARC = 2,
 145   EM_386 = 3,
 146   EM_68K = 4,
 147   EM_88K = 5,
 148   // 6 used to be EM_486
 149   EM_860 = 7,
 150   EM_MIPS = 8,
 151   EM_S370 = 9,
 152   EM_MIPS_RS3_LE = 10,
 153   // 11 was the old Sparc V9 ABI.
 154   // 12 through 14 are reserved.
 155   EM_PARISC = 15,
 156   // 16 is reserved.
 157   // Some old PowerPC object files use 17.
 158   EM_VPP500 = 17,
 159   EM_SPARC32PLUS = 18,
 160   EM_960 = 19,
 161   EM_PPC = 20,
 162   EM_PPC64 = 21,
 163   EM_S390 = 22,
 164   // 23 through 35 are served.
 165   EM_V800 = 36,
 166   EM_FR20 = 37,
 167   EM_RH32 = 38,
 168   EM_RCE = 39,
 169   EM_ARM = 40,
 170   EM_ALPHA = 41,
 171   EM_SH = 42,
 172   EM_SPARCV9 = 43,
 173   EM_TRICORE = 44,
 174   EM_ARC = 45,
 175   EM_H8_300 = 46,
 176   EM_H8_300H = 47,
 177   EM_H8S = 48,
 178   EM_H8_500 = 49,
 179   EM_IA_64 = 50,
 180   EM_MIPS_X = 51,
 181   EM_COLDFIRE = 52,
 182   EM_68HC12 = 53,
 183   EM_MMA = 54,
 184   EM_PCP = 55,
 185   EM_NCPU = 56,
 186   EM_NDR1 = 57,
 187   EM_STARCORE = 58,
 188   EM_ME16 = 59,
 189   EM_ST100 = 60,
 190   EM_TINYJ = 61,
 191   EM_X86_64 = 62,
 192   EM_PDSP = 63,
 193   EM_PDP10 = 64,
 194   EM_PDP11 = 65,
 195   EM_FX66 = 66,
 196   EM_ST9PLUS = 67,
 197   EM_ST7 = 68,
 198   EM_68HC16 = 69,
 199   EM_68HC11 = 70,
 200   EM_68HC08 = 71,
 201   EM_68HC05 = 72,
 202   EM_SVX = 73,
 203   EM_ST19 = 74,
 204   EM_VAX = 75,
 205   EM_CRIS = 76,
 206   EM_JAVELIN = 77,
 207   EM_FIREPATH = 78,
 208   EM_ZSP = 79,
 209   EM_MMIX = 80,
 210   EM_HUANY = 81,
 211   EM_PRISM = 82,
 212   EM_AVR = 83,
 213   EM_FR30 = 84,
 214   EM_D10V = 85,
 215   EM_D30V = 86,
 216   EM_V850 = 87,
 217   EM_M32R = 88,
 218   EM_MN10300 = 89,
 219   EM_MN10200 = 90,
 220   EM_PJ = 91,
 221   EM_OPENRISC = 92,
 222   EM_ARC_A5 = 93,
 223   EM_XTENSA = 94,
 224   EM_VIDEOCORE = 95,
 225   EM_TMM_GPP = 96,
 226   EM_NS32K = 97,
 227   EM_TPC = 98,
 228   // Some old picoJava object files use 99 (EM_PJ is correct).
 229   EM_SNP1K = 99,
 230   EM_ST200 = 100,
 231   EM_IP2K = 101,
 232   EM_MAX = 102,
 233   EM_CR = 103,
 234   EM_F2MC16 = 104,
 235   EM_MSP430 = 105,
 236   EM_BLACKFIN = 106,
 237   EM_SE_C33 = 107,
 238   EM_SEP = 108,
 239   EM_ARCA = 109,
 240   EM_UNICORE = 110,
 241   EM_ALTERA_NIOS2 = 113,
 242   EM_CRX = 114,
 243   // The Morph MT.
 244   EM_MT = 0x2530,
 245   // DLX.
 246   EM_DLX = 0x5aa5,
 247   // FRV.
 248   EM_FRV = 0x5441,
 249   // Infineon Technologies 16-bit microcontroller with C166-V2 core.
 250   EM_X16X = 0x4688,
 251   // Xstorym16
 252   EM_XSTORMY16 = 0xad45,
 253   // Renesas M32C
 254   EM_M32C = 0xfeb0,
 255   // Vitesse IQ2000
 256   EM_IQ2000 = 0xfeba,
 257   // NIOS
 258   EM_NIOS32 = 0xfebb
 259   // Old AVR objects used 0x1057 (EM_AVR is correct).
 260   // Old MSP430 objects used 0x1059 (EM_MSP430 is correct).
 261   // Old FR30 objects used 0x3330 (EM_FR30 is correct).
 262   // Old OpenRISC objects used 0x3426 and 0x8472 (EM_OPENRISC is correct).
 263   // Old D10V objects used 0x7650 (EM_D10V is correct).
 264   // Old D30V objects used 0x7676 (EM_D30V is correct).
 265   // Old IP2X objects used 0x8217 (EM_IP2K is correct).
 266   // Old PowerPC objects used 0x9025 (EM_PPC is correct).
 267   // Old Alpha objects used 0x9026 (EM_ALPHA is correct).
 268   // Old M32R objects used 0x9041 (EM_M32R is correct).
 269   // Old V850 objects used 0x9080 (EM_V850 is correct).
 270   // Old S/390 objects used 0xa390 (EM_S390 is correct).
 271   // Old Xtensa objects used 0xabc7 (EM_XTENSA is correct).
 272   // Old MN10300 objects used 0xbeef (EM_MN10300 is correct).
 273   // Old MN10200 objects used 0xdead (EM_MN10200 is correct).
 274 };
 275
 276 // Special section indices.
 277
 278 enum
 279 {
 280   SHN_UNDEF = 0,
 281   SHN_LORESERVE = 0xff00,
 282   SHN_LOPROC = 0xff00,
 283   SHN_HIPROC = 0xff1f,
 284   SHN_LOOS = 0xff20,
 285   SHN_HIOS = 0xff3f,
 286   SHN_ABS = 0xfff1,
 287   SHN_COMMON = 0xfff2,
 288   SHN_XINDEX = 0xffff,
 289   SHN_HIRESERVE = 0xffff
 290 };
 291
 292 // The valid values found in the Shdr sh_type field.
 293
 294 enum SHT
 295 {
 296   SHT_NULL = 0,
 297   SHT_PROGBITS = 1,
 298   SHT_SYMTAB = 2,
 299   SHT_STRTAB = 3,
 300   SHT_RELA = 4,
 301   SHT_HASH = 5,
 302   SHT_DYNAMIC = 6,
 303   SHT_NOTE = 7,
 304   SHT_NOBITS = 8,
 305   SHT_REL = 9,
 306   SHT_SHLIB = 10,
 307   SHT_DYNSYM = 11,
 308   SHT_INIT_ARRAY = 14,
 309   SHT_FINI_ARRAY = 15,
 310   SHT_PREINIT_ARRAY = 16,
 311   SHT_GROUP = 17,
 312   SHT_SYMTAB_SHNDX = 18,
 313   SHT_LOOS = 0x60000000,
 314   SHT_HIOS = 0x6fffffff,
 315   SHT_LOPROC = 0x70000000,
 316   SHT_HIPROC = 0x7fffffff,
 317   SHT_LOUSER = 0x80000000,
 318   SHT_HIUSER = 0xffffffff,
 319   // The remaining values are not in the standard.
 320   // List of prelink dependencies.
 321   SHT_GNU_LIBLIST = 0x6ffffff7,
 322   // Versions defined by file.
 323   SHT_SUNW_verdef = 0x6ffffffd,
 324   SHT_GNU_verdef = 0x6ffffffd,
 325   // Versions needed by file.
 326   SHT_SUNW_verneed = 0x6ffffffe,
 327   SHT_GNU_verneed = 0x6ffffffe,
 328   // Symbol versions,
 329   SHT_SUNW_versym = 0x6fffffff,
 330   SHT_GNU_versym = 0x6fffffff,
 331 };
 332
 333 // The valid bit flags found in the Shdr sh_flags field.
 334
 335 enum SHF
 336 {
 337   SHF_WRITE = 0x1,
 338   SHF_ALLOC = 0x2,
 339   SHF_EXECINSTR = 0x4,
 340   SHF_MERGE = 0x10,
 341   SHF_STRINGS = 0x20,
 342   SHF_INFO_LINK = 0x40,
 343   SHF_LINK_ORDER = 0x80,
 344   SHF_OS_NONCONFORMING = 0x100,
 345   SHF_GROUP = 0x200,
 346   SHF_TLS = 0x400,
 347   SHF_MASKOS = 0x0ff00000,
 348   SHF_MASKPROC = 0xf0000000
 349 };
 350
 351 // Bit flags which appear in the first 32-bit word of the section data
 352 // of a SHT_GROUP section.
 353
 354 enum
 355 {
 356   GRP_COMDAT = 0x1,
 357   GRP_MASKOS = 0x0ff00000,
 358   GRP_MASKPROC = 0xf0000000
 359 };
 360
 361 // The valid values found in the Phdr p_type field.
 362
 363 enum PT
 364 {
 365   PT_NULL = 0,
 366   PT_LOAD = 1,
 367   PT_DYNAMIC = 2,
 368   PT_INTERP = 3,
 369   PT_NOTE = 4,
 370   PT_SHLIB = 5,
 371   PT_PHDR = 6,
 372   PT_TLS = 7,
 373   PT_LOOS = 0x60000000,
 374   PT_HIOS = 0x6fffffff,
 375   PT_LOPROC = 0x70000000,
 376   PT_HIPROC = 0x7fffffff,
 377   // The remaining values are not in the standard.
 378   // Frame unwind information.
 379   PT_GNU_EH_FRAME = 0x6474e550,
 380   PT_SUNW_EH_FRAME = 0x6474e550,
 381   // Stack flags.
 382   PT_GNU_STACK = 0x6474e551,
 383   // Read only after relocation.
 384   PT_GNU_RELRO = 0x6474e552
 385 };
 386
 387 // The valid bit flags found in the Phdr p_flags field.
 388
 389 enum PF
 390 {
 391   PF_X = 0x1,
 392   PF_W = 0x2,
 393   PF_R = 0x4,
 394   PF_MASKOS = 0x0ff00000,
 395   PF_MASKPROC = 0xf0000000
 396 };
 397
 398 // Symbol binding from Sym st_info field.
 399
 400 enum STB
 401 {
 402   STB_LOCAL = 0,
 403   STB_GLOBAL = 1,
 404   STB_WEAK = 2,
 405   STB_LOOS = 10,
 406   STB_HIOS = 12,
 407   STB_LOPROC = 13,
 408   STB_HIPROC = 15
 409 };
 410
 411 // Symbol types from Sym st_info field.
 412
 413 enum STT
 414 {
 415   STT_NOTYPE = 0,
 416   STT_OBJECT = 1,
 417   STT_FUNC = 2,
 418   STT_SECTION = 3,
 419   STT_FILE = 4,
 420   STT_COMMON = 5,
 421   STT_TLS = 6,
 422   STT_LOOS = 10,
 423   STT_HIOS = 12,
 424   STT_LOPROC = 13,
 425   STT_HIPROC = 15
 426 };
 427
 428 inline STB
 429 elf_st_bind(unsigned char info)
 430 {
 431   return static_cast<STB>(info >> 4);
 432 }
 433
 434 inline STT
 435 elf_st_type(unsigned char info)
 436 {
 437   return static_cast<STT>(info & 0xf);
 438 }
 439
 440 inline unsigned char
 441 elf_st_info(STB bind, STT type)
 442 {
 443   return ((static_cast<unsigned char>(bind) << 4)
 444           + (static_cast<unsigned char>(type) & 0xf));
 445 }
 446
 447 // Symbol visibility from Sym st_other field.
 448
 449 enum STV
 450 {
 451   STV_DEFAULT = 0,
 452   STV_INTERNAL = 1,
 453   STV_HIDDEN = 2,
 454   STV_PROTECTED = 3
 455 };
 456
 457 inline STV
 458 elf_st_visibility(unsigned char other)
 459 {
 460   return static_cast<STV>(other & 0x3);
 461 }
 462
 463 inline unsigned char
 464 elf_st_nonvis(unsigned char other)
 465 {
 466   return static_cast<STV>(other >> 2);
 467 }
 468
 469 inline unsigned char
 470 elf_st_other(STV vis, unsigned char nonvis)
 471 {
 472   return ((nonvis << 2)
 473           + (static_cast<unsigned char>(vis) & 3));
 474 }
 475
 476 // Reloc information from Rel/Rela r_info field.
 477
 478 template<int size>
 479 unsigned int
 480 elf_r_sym(typename Elf_types<size>::Elf_WXword);
 481
 482 template<>
 483 inline unsigned int
 484 elf_r_sym<32>(Elf_Word v)
 485 {
 486   return v >> 8;
 487 }
 488
 489 template<>
 490 inline unsigned int
 491 elf_r_sym<64>(Elf_Xword v)
 492 {
 493   return v >> 32;
 494 }
 495
 496 template<int size>
 497 unsigned int
 498 elf_r_type(typename Elf_types<size>::Elf_WXword);
 499
 500 template<>
 501 inline unsigned int
 502 elf_r_type<32>(Elf_Word v)
 503 {
 504   return v & 0xff;
 505 }
 506
 507 template<>
 508 inline unsigned int
 509 elf_r_type<64>(Elf_Xword v)
 510 {
 511   return v & 0xffffffff;
 512 }
 513
 514 template<int size>
 515 typename Elf_types<size>::Elf_WXword
 516 elf_r_info(unsigned int s, unsigned int t);
 517
 518 template<>
 519 inline Elf_Word
 520 elf_r_info<32>(unsigned int s, unsigned int t)
 521 {
 522   return (s << 8) + (t & 0xff);
 523 }
 524
 525 template<>
 526 inline Elf_Xword
 527 elf_r_info<64>(unsigned int s, unsigned int t)
 528 {
 529   return (static_cast<Elf_Xword>(s) << 32) + (t & 0xffffffff);
 530 }
 531
 532 } // End namespace elfcpp.
 533
 534 // Include internal details after defining the types.
 535 #include "elfcpp_internal.h"
 536
 537 namespace elfcpp
 538 {
 539
 540 // The offset of the ELF file header in the ELF file.
 541
 542 const int file_header_offset = 0;
 543
 544 // ELF structure sizes.
 545
 546 template<int size>
 547 struct Elf_sizes
 548 {
 549   // Size of ELF file header.
 550   static const int ehdr_size = sizeof(internal::Ehdr_data<size>);
 551   // Size of ELF segment header.
 552   static const int phdr_size = sizeof(internal::Phdr_data<size>);
 553   // Size of ELF section header.
 554   static const int shdr_size = sizeof(internal::Shdr_data<size>);
 555   // Size of ELF symbol table entry.
 556   static const int sym_size = sizeof(internal::Sym_data<size>);
 557   // Sizes of ELF reloc entries.
 558   static const int rel_size = sizeof(internal::Rel_data<size>);
 559   static const int rela_size = sizeof(internal::Rela_data<size>);
 560 };
 561
 562 // Given the address of an Elf_Word, return the value.
 563
 564 template<bool big_endian>
 565 inline Elf_Word
 566 read_elf_word(const Elf_Word* p)
 567 {
 568   return internal::convert_word<big_endian>(*p);
 569 }
 570
 571 // Store an Elf_Word into an address.
 572
 573 template<bool big_endian>
 574 inline void
 575 write_elf_word(Elf_Word* p, Elf_Word v)
 576 {
 577   *p = internal::convert_word<big_endian>(v);
 578 }
 579
 580 // Accessor class for the ELF file header.
 581
 582 template<int size, bool big_endian>
 583 class Ehdr
 584 {
 585  public:
 586   Ehdr(const unsigned char* p)
 587     : p_(reinterpret_cast<const internal::Ehdr_data<size>*>(p))
 588   { }
 589
 590   const unsigned char*
 591   get_e_ident() const
 592   { return this->p_->e_ident; }
 593
 594   Elf_Half
 595   get_e_type() const
 596   { return internal::convert_half<big_endian>(this->p_->e_type); }
 597
 598   Elf_Half
 599   get_e_machine() const
 600   { return internal::convert_half<big_endian>(this->p_->e_machine); }
 601
 602   Elf_Word
 603   get_e_version() const
 604   { return internal::convert_word<big_endian>(this->p_->e_version); }
 605
 606   typename Elf_types<size>::Elf_Addr
 607   get_e_entry() const
 608   { return internal::convert_addr<size, big_endian>(this->p_->e_entry); }
 609
 610   typename Elf_types<size>::Elf_Off
 611   get_e_phoff() const
 612   { return internal::convert_off<size, big_endian>(this->p_->e_phoff); }
 613
 614   typename Elf_types<size>::Elf_Off
 615   get_e_shoff() const
 616   { return internal::convert_off<size, big_endian>(this->p_->e_shoff); }
 617
 618   Elf_Word
 619   get_e_flags() const
 620   { return internal::convert_word<big_endian>(this->p_->e_flags); }
 621
 622   Elf_Half
 623   get_e_ehsize() const
 624   { return internal::convert_half<big_endian>(this->p_->e_ehsize); }
 625
 626   Elf_Half
 627   get_e_phentsize() const
 628   { return internal::convert_half<big_endian>(this->p_->e_phentsize); }
 629
 630   Elf_Half
 631   get_e_phnum() const
 632   { return internal::convert_half<big_endian>(this->p_->e_phnum); }
 633
 634   Elf_Half
 635   get_e_shentsize() const
 636   { return internal::convert_half<big_endian>(this->p_->e_shentsize); }
 637
 638   Elf_Half
 639   get_e_shnum() const
 640   { return internal::convert_half<big_endian>(this->p_->e_shnum); }
 641
 642   Elf_Half
 643   get_e_shstrndx() const
 644   { return internal::convert_half<big_endian>(this->p_->e_shstrndx); }
 645
 646  private:
 647   const internal::Ehdr_data<size>* p_;
 648 };
 649
 650 // Write class for the ELF file header.
 651
 652 template<int size, bool big_endian>
 653 class Ehdr_write
 654 {
 655  public:
 656   Ehdr_write(unsigned char* p)
 657     : p_(reinterpret_cast<internal::Ehdr_data<size>*>(p))
 658   { }
 659
 660   void
 661   put_e_ident(const unsigned char v[EI_NIDENT]) const
 662   { memcpy(this->p_->e_ident, v, EI_NIDENT); }
 663
 664   void
 665   put_e_type(Elf_Half v)
 666   { this->p_->e_type = internal::convert_half<big_endian>(v); }
 667
 668   void
 669   put_e_machine(Elf_Half v)
 670   { this->p_->e_machine = internal::convert_half<big_endian>(v); }
 671
 672   void
 673   put_e_version(Elf_Word v)
 674   { this->p_->e_version = internal::convert_word<big_endian>(v); }
 675
 676   void
 677   put_e_entry(typename Elf_types<size>::Elf_Addr v)
 678   { this->p_->e_entry = internal::convert_addr<size, big_endian>(v); }
 679
 680   void
 681   put_e_phoff(typename Elf_types<size>::Elf_Off v)
 682   { this->p_->e_phoff = internal::convert_off<size, big_endian>(v); }
 683
 684   void
 685   put_e_shoff(typename Elf_types<size>::Elf_Off v)
 686   { this->p_->e_shoff = internal::convert_off<size, big_endian>(v); }
 687
 688   void
 689   put_e_flags(Elf_Word v)
 690   { this->p_->e_flags = internal::convert_word<big_endian>(v); }
 691
 692   void
 693   put_e_ehsize(Elf_Half v)
 694   { this->p_->e_ehsize = internal::convert_half<big_endian>(v); }
 695
 696   void
 697   put_e_phentsize(Elf_Half v)
 698   { this->p_->e_phentsize = internal::convert_half<big_endian>(v); }
 699
 700   void
 701   put_e_phnum(Elf_Half v)
 702   { this->p_->e_phnum = internal::convert_half<big_endian>(v); }
 703
 704   void
 705   put_e_shentsize(Elf_Half v)
 706   { this->p_->e_shentsize = internal::convert_half<big_endian>(v); }
 707
 708   void
 709   put_e_shnum(Elf_Half v)
 710   { this->p_->e_shnum = internal::convert_half<big_endian>(v); }
 711
 712   void
 713   put_e_shstrndx(Elf_Half v)
 714   { this->p_->e_shstrndx = internal::convert_half<big_endian>(v); }
 715
 716  private:
 717   internal::Ehdr_data<size>* p_;
 718 };
 719
 720 // Accessor class for an ELF section header.
 721
 722 template<int size, bool big_endian>
 723 class Shdr
 724 {
 725  public:
 726   Shdr(const unsigned char* p)
 727     : p_(reinterpret_cast<const internal::Shdr_data<size>*>(p))
 728   { }
 729
 730   Elf_Word
 731   get_sh_name() const
 732   { return internal::convert_word<big_endian>(this->p_->sh_name); }
 733
 734   Elf_Word
 735   get_sh_type() const
 736   { return internal::convert_word<big_endian>(this->p_->sh_type); }
 737
 738   typename Elf_types<size>::Elf_WXword
 739   get_sh_flags() const
 740   { return internal::convert_wxword<size, big_endian>(this->p_->sh_flags); }
 741
 742   typename Elf_types<size>::Elf_Addr
 743   get_sh_addr() const
 744   { return internal::convert_addr<size, big_endian>(this->p_->sh_addr); }
 745
 746   typename Elf_types<size>::Elf_Off
 747   get_sh_offset() const
 748   { return internal::convert_off<size, big_endian>(this->p_->sh_offset); }
 749
 750   typename Elf_types<size>::Elf_WXword
 751   get_sh_size() const
 752   { return internal::convert_wxword<size, big_endian>(this->p_->sh_size); }
 753
 754   Elf_Word
 755   get_sh_link() const
 756   { return internal::convert_word<big_endian>(this->p_->sh_link); }
 757
 758   Elf_Word
 759   get_sh_info() const
 760   { return internal::convert_word<big_endian>(this->p_->sh_info); }
 761
 762   typename Elf_types<size>::Elf_WXword
 763   get_sh_addralign() const
 764   { return
 765       internal::convert_wxword<size, big_endian>(this->p_->sh_addralign); }
 766
 767   typename Elf_types<size>::Elf_WXword
 768   get_sh_entsize() const
 769   { return internal::convert_wxword<size, big_endian>(this->p_->sh_entsize); }
 770
 771  private:
 772   const internal::Shdr_data<size>* p_;
 773 };
 774
 775 // Write class for an ELF section header.
 776
 777 template<int size, bool big_endian>
 778 class Shdr_write
 779 {
 780  public:
 781   Shdr_write(unsigned char* p)
 782     : p_(reinterpret_cast<internal::Shdr_data<size>*>(p))
 783   { }
 784
 785   void
 786   put_sh_name(Elf_Word v)
 787   { this->p_->sh_name = internal::convert_word<big_endian>(v); }
 788
 789   void
 790   put_sh_type(Elf_Word v)
 791   { this->p_->sh_type = internal::convert_word<big_endian>(v); }
 792
 793   void
 794   put_sh_flags(typename Elf_types<size>::Elf_WXword v)
 795   { this->p_->sh_flags = internal::convert_wxword<size, big_endian>(v); }
 796
 797   void
 798   put_sh_addr(typename Elf_types<size>::Elf_Addr v)
 799   { this->p_->sh_addr = internal::convert_addr<size, big_endian>(v); }
 800
 801   void
 802   put_sh_offset(typename Elf_types<size>::Elf_Off v)
 803   { this->p_->sh_offset = internal::convert_off<size, big_endian>(v); }
 804
 805   void
 806   put_sh_size(typename Elf_types<size>::Elf_WXword v)
 807   { this->p_->sh_size = internal::convert_wxword<size, big_endian>(v); }
 808
 809   void
 810   put_sh_link(Elf_Word v)
 811   { this->p_->sh_link = internal::convert_word<big_endian>(v); }
 812
 813   void
 814   put_sh_info(Elf_Word v)
 815   { this->p_->sh_info = internal::convert_word<big_endian>(v); }
 816
 817   void
 818   put_sh_addralign(typename Elf_types<size>::Elf_WXword v)
 819   { this->p_->sh_addralign = internal::convert_wxword<size, big_endian>(v); }
 820
 821   void
 822   put_sh_entsize(typename Elf_types<size>::Elf_WXword v)
 823   { this->p_->sh_entsize = internal::convert_wxword<size, big_endian>(v); }
 824
 825  private:
 826   internal::Shdr_data<size>* p_;
 827 };
 828
 829 // Accessor class for an ELF segment header.
 830
 831 template<int size, bool big_endian>
 832 class Phdr
 833 {
 834  public:
 835   Phdr(const unsigned char* p)
 836     : p_(reinterpret_cast<const internal::Phdr_data<size>*>(p))
 837   { }
 838
 839   Elf_Word
 840   get_p_type() const
 841   { return internal::convert_word<big_endian>(this->p_->p_type); }
 842
 843   typename Elf_types<size>::Elf_Off
 844   get_p_offset() const
 845   { return internal::convert_off<size, big_endian>(this->p_->p_offset); }
 846
 847   typename Elf_types<size>::Elf_Addr
 848   get_p_vaddr() const
 849   { return internal::convert_addr<size, big_endian>(this->p_->p_vaddr); }
 850
 851   typename Elf_types<size>::Elf_Addr
 852   get_p_paddr() const
 853   { return internal::convert_addr<size, big_endian>(this->p_->p_paddr); }
 854
 855   typename Elf_types<size>::Elf_WXword
 856   get_p_filesz() const
 857   { return internal::convert_wxword<size, big_endian>(this->p_->p_filesz); }
 858
 859   typename Elf_types<size>::Elf_WXword
 860   get_p_memsz() const
 861   { return internal::convert_wxword<size, big_endian>(this->p_->p_memsz); }
 862
 863   Elf_Word
 864   get_p_flags() const
 865   { return internal::convert_word<big_endian>(this->p_->p_flags); }
 866
 867   typename Elf_types<size>::Elf_WXword
 868   get_p_align() const
 869   { return internal::convert_wxword<size, big_endian>(this->p_->p_align); }
 870
 871  private:
 872   const internal::Phdr_data<size>* p_;
 873 };
 874
 875 // Write class for an ELF segment header.
 876
 877 template<int size, bool big_endian>
 878 class Phdr_write
 879 {
 880  public:
 881   Phdr_write(unsigned char* p)
 882     : p_(reinterpret_cast<internal::Phdr_data<size>*>(p))
 883   { }
 884
 885   void
 886   put_p_type(Elf_Word v)
 887   { this->p_->p_type = internal::convert_word<big_endian>(v); }
 888
 889   void
 890   put_p_offset(typename Elf_types<size>::Elf_Off v)
 891   { this->p_->p_offset = internal::convert_off<size, big_endian>(v); }
 892
 893   void
 894   put_p_vaddr(typename Elf_types<size>::Elf_Addr v)
 895   { this->p_->p_vaddr = internal::convert_addr<size, big_endian>(v); }
 896
 897   void
 898   put_p_paddr(typename Elf_types<size>::Elf_Addr v)
 899   { this->p_->p_paddr = internal::convert_addr<size, big_endian>(v); }
 900
 901   void
 902   put_p_filesz(typename Elf_types<size>::Elf_WXword v)
 903   { this->p_->p_filesz = internal::convert_wxword<size, big_endian>(v); }
 904
 905   void
 906   put_p_memsz(typename Elf_types<size>::Elf_WXword v)
 907   { this->p_->p_memsz = internal::convert_wxword<size, big_endian>(v); }
 908
 909   void
 910   put_p_flags(Elf_Word v)
 911   { this->p_->p_flags = internal::convert_word<big_endian>(v); }
 912
 913   void
 914   put_p_align(typename Elf_types<size>::Elf_WXword v)
 915   { this->p_->p_align = internal::convert_wxword<size, big_endian>(v); }
 916
 917  private:
 918   internal::Phdr_data<size>* p_;
 919 };
 920
 921 // Accessor class for an ELF symbol table entry.
 922
 923 template<int size, bool big_endian>
 924 class Sym
 925 {
 926  public:
 927   Sym(const unsigned char* p)
 928     : p_(reinterpret_cast<const internal::Sym_data<size>*>(p))
 929   { }
 930
 931   Elf_Word
 932   get_st_name() const
 933   { return internal::convert_word<big_endian>(this->p_->st_name); }
 934
 935   typename Elf_types<size>::Elf_Addr
 936   get_st_value() const
 937   { return internal::convert_addr<size, big_endian>(this->p_->st_value); }
 938
 939   typename Elf_types<size>::Elf_WXword
 940   get_st_size() const
 941   { return internal::convert_wxword<size, big_endian>(this->p_->st_size); }
 942
 943   unsigned char
 944   get_st_info() const
 945   { return this->p_->st_info; }
 946
 947   STB
 948   get_st_bind() const
 949   { return elf_st_bind(this->get_st_info()); }
 950
 951   STT
 952   get_st_type() const
 953   { return elf_st_type(this->get_st_info()); }
 954
 955   unsigned char
 956   get_st_other() const
 957   { return this->p_->st_other; }
 958
 959   STV
 960   get_st_visibility() const
 961   { return elf_st_visibility(this->get_st_other()); }
 962
 963   unsigned char
 964   get_st_nonvis() const
 965   { return elf_st_nonvis(this->get_st_other()); }
 966
 967   Elf_Half
 968   get_st_shndx() const
 969   { return internal::convert_half<big_endian>(this->p_->st_shndx); }
 970
 971  private:
 972   const internal::Sym_data<size>* p_;
 973 };
 974
 975 // Writer class for an ELF symbol table entry.
 976
 977 template<int size, bool big_endian>
 978 class Sym_write
 979 {
 980  public:
 981   Sym_write(unsigned char* p)
 982     : p_(reinterpret_cast<internal::Sym_data<size>*>(p))
 983   { }
 984
 985   void
 986   put_st_name(Elf_Word v)
 987   { this->p_->st_name = internal::convert_word<big_endian>(v); }
 988
 989   void
 990   put_st_value(typename Elf_types<size>::Elf_Addr v)
 991   { this->p_->st_value = internal::convert_addr<size, big_endian>(v); }
 992
 993   void
 994   put_st_size(typename Elf_types<size>::Elf_WXword v)
 995   { this->p_->st_size = internal::convert_wxword<size, big_endian>(v); }
 996
 997   void
 998   put_st_info(unsigned char v)
 999   { this->p_->st_info = v; }
1000
1001   void
1002   put_st_info(STB bind, STT type)
1003   { this->p_->st_info = elf_st_info(bind, type); }
1004
1005   void
1006   put_st_other(unsigned char v)
1007   { this->p_->st_other = v; }
1008
1009   void
1010   put_st_other(STV vis, unsigned char nonvis)
1011   { this->p_->st_other = elf_st_other(vis, nonvis); }
1012
1013   void
1014   put_st_shndx(Elf_Half v)
1015   { this->p_->st_shndx = internal::convert_half<big_endian>(v); }
1016
1017   Sym<size, big_endian>
1018   sym()
1019   { return Sym<size, big_endian>(reinterpret_cast<unsigned char*>(this->p_)); }
1020
1021  private:
1022   internal::Sym_data<size>* p_;
1023 };
1024
1025 // Accessor classes for Elf relocation table entries.
1026
1027 template<int size, bool big_endian>
1028 class Rel
1029 {
1030  public:
1031   Rel(const unsigned char* p)
1032     : p_(reinterpret_cast<const internal::Rel_data<size>*>(p))
1033   { }
1034
1035   typename Elf_types<size>::Elf_Addr
1036   get_r_offset() const
1037   { return internal::convert_addr<size, big_endian>(this->p_->r_offset); }
1038
1039   typename Elf_types<size>::Elf_WXword
1040   get_r_info() const
1041   { return internal::convert_wxword<size, big_endian>(this->p_->r_info); }
1042
1043  private:
1044   const internal::Rel_data<size>* p_;
1045 };
1046
1047 template<int size, bool big_endian>
1048 class Rela
1049 {
1050  public:
1051   Rela(const unsigned char* p)
1052     : p_(reinterpret_cast<const internal::Rela_data<size>*>(p))
1053   { }
1054
1055   typename Elf_types<size>::Elf_Addr
1056   get_r_offset() const
1057   { return internal::convert_addr<size, big_endian>(this->p_->r_offset); }
1058
1059   typename Elf_types<size>::Elf_WXword
1060   get_r_info() const
1061   { return internal::convert_wxword<size, big_endian>(this->p_->r_info); }
1062
1063   typename Elf_types<size>::Elf_Swxword
1064   get_r_addend() const
1065   { return internal::convert_swxword<size, big_endian>(this->p_->r_addend); }
1066
1067  private:
1068   const internal::Rela_data<size>* p_;
1069 };
1070
1071 } // End namespace elfcpp.
1072
1073 #endif // !defined(ELFPCP_H)