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 } // End namespace elfcpp.
 534
 535 // Include internal details after defining the types.
 536 #include "elfcpp_internal.h"
 537
 538 namespace elfcpp
 539 {
 540
 541 // The offset of the ELF file header in the ELF file.
 542
 543 const int file_header_offset = 0;
 544
 545 // ELF structure sizes.
 546
 547 template<int size>
 548 struct Elf_sizes
 549 {
 550   // Size of ELF file header.
 551   static const int ehdr_size = sizeof(internal::Ehdr_data<size>);
 552   // Size of ELF segment header.
 553   static const int phdr_size = sizeof(internal::Phdr_data<size>);
 554   // Size of ELF section header.
 555   static const int shdr_size = sizeof(internal::Shdr_data<size>);
 556   // Size of ELF symbol table entry.
 557   static const int sym_size = sizeof(internal::Sym_data<size>);
 558   // Sizes of ELF reloc entries.
 559   static const int rel_size = sizeof(internal::Rel_data<size>);
 560   static const int rela_size = sizeof(internal::Rela_data<size>);
 561 };
 562
 563 // Accessor class for the ELF file header.
 564
 565 template<int size, bool big_endian>
 566 class Ehdr
 567 {
 568  public:
 569   Ehdr(const unsigned char* p)
 570     : p_(reinterpret_cast<const internal::Ehdr_data<size>*>(p))
 571   { }
 572
 573   const unsigned char*
 574   get_e_ident() const
 575   { return this->p_->e_ident; }
 576
 577   Elf_Half
 578   get_e_type() const
 579   { return Convert<16, big_endian>::convert_host(this->p_->e_type); }
 580
 581   Elf_Half
 582   get_e_machine() const
 583   { return Convert<16, big_endian>::convert_host(this->p_->e_machine); }
 584
 585   Elf_Word
 586   get_e_version() const
 587   { return Convert<32, big_endian>::convert_host(this->p_->e_version); }
 588
 589   typename Elf_types<size>::Elf_Addr
 590   get_e_entry() const
 591   { return Convert<size, big_endian>::convert_host(this->p_->e_entry); }
 592
 593   typename Elf_types<size>::Elf_Off
 594   get_e_phoff() const
 595   { return Convert<size, big_endian>::convert_host(this->p_->e_phoff); }
 596
 597   typename Elf_types<size>::Elf_Off
 598   get_e_shoff() const
 599   { return Convert<size, big_endian>::convert_host(this->p_->e_shoff); }
 600
 601   Elf_Word
 602   get_e_flags() const
 603   { return Convert<32, big_endian>::convert_host(this->p_->e_flags); }
 604
 605   Elf_Half
 606   get_e_ehsize() const
 607   { return Convert<16, big_endian>::convert_host(this->p_->e_ehsize); }
 608
 609   Elf_Half
 610   get_e_phentsize() const
 611   { return Convert<16, big_endian>::convert_host(this->p_->e_phentsize); }
 612
 613   Elf_Half
 614   get_e_phnum() const
 615   { return Convert<16, big_endian>::convert_host(this->p_->e_phnum); }
 616
 617   Elf_Half
 618   get_e_shentsize() const
 619   { return Convert<16, big_endian>::convert_host(this->p_->e_shentsize); }
 620
 621   Elf_Half
 622   get_e_shnum() const
 623   { return Convert<16, big_endian>::convert_host(this->p_->e_shnum); }
 624
 625   Elf_Half
 626   get_e_shstrndx() const
 627   { return Convert<16, big_endian>::convert_host(this->p_->e_shstrndx); }
 628
 629  private:
 630   const internal::Ehdr_data<size>* p_;
 631 };
 632
 633 // Write class for the ELF file header.
 634
 635 template<int size, bool big_endian>
 636 class Ehdr_write
 637 {
 638  public:
 639   Ehdr_write(unsigned char* p)
 640     : p_(reinterpret_cast<internal::Ehdr_data<size>*>(p))
 641   { }
 642
 643   void
 644   put_e_ident(const unsigned char v[EI_NIDENT]) const
 645   { memcpy(this->p_->e_ident, v, EI_NIDENT); }
 646
 647   void
 648   put_e_type(Elf_Half v)
 649   { this->p_->e_type = Convert<16, big_endian>::convert_host(v); }
 650
 651   void
 652   put_e_machine(Elf_Half v)
 653   { this->p_->e_machine = Convert<16, big_endian>::convert_host(v); }
 654
 655   void
 656   put_e_version(Elf_Word v)
 657   { this->p_->e_version = Convert<32, big_endian>::convert_host(v); }
 658
 659   void
 660   put_e_entry(typename Elf_types<size>::Elf_Addr v)
 661   { this->p_->e_entry = Convert<size, big_endian>::convert_host(v); }
 662
 663   void
 664   put_e_phoff(typename Elf_types<size>::Elf_Off v)
 665   { this->p_->e_phoff = Convert<size, big_endian>::convert_host(v); }
 666
 667   void
 668   put_e_shoff(typename Elf_types<size>::Elf_Off v)
 669   { this->p_->e_shoff = Convert<size, big_endian>::convert_host(v); }
 670
 671   void
 672   put_e_flags(Elf_Word v)
 673   { this->p_->e_flags = Convert<32, big_endian>::convert_host(v); }
 674
 675   void
 676   put_e_ehsize(Elf_Half v)
 677   { this->p_->e_ehsize = Convert<16, big_endian>::convert_host(v); }
 678
 679   void
 680   put_e_phentsize(Elf_Half v)
 681   { this->p_->e_phentsize = Convert<16, big_endian>::convert_host(v); }
 682
 683   void
 684   put_e_phnum(Elf_Half v)
 685   { this->p_->e_phnum = Convert<16, big_endian>::convert_host(v); }
 686
 687   void
 688   put_e_shentsize(Elf_Half v)
 689   { this->p_->e_shentsize = Convert<16, big_endian>::convert_host(v); }
 690
 691   void
 692   put_e_shnum(Elf_Half v)
 693   { this->p_->e_shnum = Convert<16, big_endian>::convert_host(v); }
 694
 695   void
 696   put_e_shstrndx(Elf_Half v)
 697   { this->p_->e_shstrndx = Convert<16, big_endian>::convert_host(v); }
 698
 699  private:
 700   internal::Ehdr_data<size>* p_;
 701 };
 702
 703 // Accessor class for an ELF section header.
 704
 705 template<int size, bool big_endian>
 706 class Shdr
 707 {
 708  public:
 709   Shdr(const unsigned char* p)
 710     : p_(reinterpret_cast<const internal::Shdr_data<size>*>(p))
 711   { }
 712
 713   Elf_Word
 714   get_sh_name() const
 715   { return Convert<32, big_endian>::convert_host(this->p_->sh_name); }
 716
 717   Elf_Word
 718   get_sh_type() const
 719   { return Convert<32, big_endian>::convert_host(this->p_->sh_type); }
 720
 721   typename Elf_types<size>::Elf_WXword
 722   get_sh_flags() const
 723   { return Convert<size, big_endian>::convert_host(this->p_->sh_flags); }
 724
 725   typename Elf_types<size>::Elf_Addr
 726   get_sh_addr() const
 727   { return Convert<size, big_endian>::convert_host(this->p_->sh_addr); }
 728
 729   typename Elf_types<size>::Elf_Off
 730   get_sh_offset() const
 731   { return Convert<size, big_endian>::convert_host(this->p_->sh_offset); }
 732
 733   typename Elf_types<size>::Elf_WXword
 734   get_sh_size() const
 735   { return Convert<size, big_endian>::convert_host(this->p_->sh_size); }
 736
 737   Elf_Word
 738   get_sh_link() const
 739   { return Convert<32, big_endian>::convert_host(this->p_->sh_link); }
 740
 741   Elf_Word
 742   get_sh_info() const
 743   { return Convert<32, big_endian>::convert_host(this->p_->sh_info); }
 744
 745   typename Elf_types<size>::Elf_WXword
 746   get_sh_addralign() const
 747   { return
 748       Convert<size, big_endian>::convert_host(this->p_->sh_addralign); }
 749
 750   typename Elf_types<size>::Elf_WXword
 751   get_sh_entsize() const
 752   { return Convert<size, big_endian>::convert_host(this->p_->sh_entsize); }
 753
 754  private:
 755   const internal::Shdr_data<size>* p_;
 756 };
 757
 758 // Write class for an ELF section header.
 759
 760 template<int size, bool big_endian>
 761 class Shdr_write
 762 {
 763  public:
 764   Shdr_write(unsigned char* p)
 765     : p_(reinterpret_cast<internal::Shdr_data<size>*>(p))
 766   { }
 767
 768   void
 769   put_sh_name(Elf_Word v)
 770   { this->p_->sh_name = Convert<32, big_endian>::convert_host(v); }
 771
 772   void
 773   put_sh_type(Elf_Word v)
 774   { this->p_->sh_type = Convert<32, big_endian>::convert_host(v); }
 775
 776   void
 777   put_sh_flags(typename Elf_types<size>::Elf_WXword v)
 778   { this->p_->sh_flags = Convert<size, big_endian>::convert_host(v); }
 779
 780   void
 781   put_sh_addr(typename Elf_types<size>::Elf_Addr v)
 782   { this->p_->sh_addr = Convert<size, big_endian>::convert_host(v); }
 783
 784   void
 785   put_sh_offset(typename Elf_types<size>::Elf_Off v)
 786   { this->p_->sh_offset = Convert<size, big_endian>::convert_host(v); }
 787
 788   void
 789   put_sh_size(typename Elf_types<size>::Elf_WXword v)
 790   { this->p_->sh_size = Convert<size, big_endian>::convert_host(v); }
 791
 792   void
 793   put_sh_link(Elf_Word v)
 794   { this->p_->sh_link = Convert<32, big_endian>::convert_host(v); }
 795
 796   void
 797   put_sh_info(Elf_Word v)
 798   { this->p_->sh_info = Convert<32, big_endian>::convert_host(v); }
 799
 800   void
 801   put_sh_addralign(typename Elf_types<size>::Elf_WXword v)
 802   { this->p_->sh_addralign = Convert<size, big_endian>::convert_host(v); }
 803
 804   void
 805   put_sh_entsize(typename Elf_types<size>::Elf_WXword v)
 806   { this->p_->sh_entsize = Convert<size, big_endian>::convert_host(v); }
 807
 808  private:
 809   internal::Shdr_data<size>* p_;
 810 };
 811
 812 // Accessor class for an ELF segment header.
 813
 814 template<int size, bool big_endian>
 815 class Phdr
 816 {
 817  public:
 818   Phdr(const unsigned char* p)
 819     : p_(reinterpret_cast<const internal::Phdr_data<size>*>(p))
 820   { }
 821
 822   Elf_Word
 823   get_p_type() const
 824   { return Convert<32, big_endian>::convert_host(this->p_->p_type); }
 825
 826   typename Elf_types<size>::Elf_Off
 827   get_p_offset() const
 828   { return Convert<size, big_endian>::convert_host(this->p_->p_offset); }
 829
 830   typename Elf_types<size>::Elf_Addr
 831   get_p_vaddr() const
 832   { return Convert<size, big_endian>::convert_host(this->p_->p_vaddr); }
 833
 834   typename Elf_types<size>::Elf_Addr
 835   get_p_paddr() const
 836   { return Convert<size, big_endian>::convert_host(this->p_->p_paddr); }
 837
 838   typename Elf_types<size>::Elf_WXword
 839   get_p_filesz() const
 840   { return Convert<size, big_endian>::convert_host(this->p_->p_filesz); }
 841
 842   typename Elf_types<size>::Elf_WXword
 843   get_p_memsz() const
 844   { return Convert<size, big_endian>::convert_host(this->p_->p_memsz); }
 845
 846   Elf_Word
 847   get_p_flags() const
 848   { return Convert<32, big_endian>::convert_host(this->p_->p_flags); }
 849
 850   typename Elf_types<size>::Elf_WXword
 851   get_p_align() const
 852   { return Convert<size, big_endian>::convert_host(this->p_->p_align); }
 853
 854  private:
 855   const internal::Phdr_data<size>* p_;
 856 };
 857
 858 // Write class for an ELF segment header.
 859
 860 template<int size, bool big_endian>
 861 class Phdr_write
 862 {
 863  public:
 864   Phdr_write(unsigned char* p)
 865     : p_(reinterpret_cast<internal::Phdr_data<size>*>(p))
 866   { }
 867
 868   void
 869   put_p_type(Elf_Word v)
 870   { this->p_->p_type = Convert<32, big_endian>::convert_host(v); }
 871
 872   void
 873   put_p_offset(typename Elf_types<size>::Elf_Off v)
 874   { this->p_->p_offset = Convert<size, big_endian>::convert_host(v); }
 875
 876   void
 877   put_p_vaddr(typename Elf_types<size>::Elf_Addr v)
 878   { this->p_->p_vaddr = Convert<size, big_endian>::convert_host(v); }
 879
 880   void
 881   put_p_paddr(typename Elf_types<size>::Elf_Addr v)
 882   { this->p_->p_paddr = Convert<size, big_endian>::convert_host(v); }
 883
 884   void
 885   put_p_filesz(typename Elf_types<size>::Elf_WXword v)
 886   { this->p_->p_filesz = Convert<size, big_endian>::convert_host(v); }
 887
 888   void
 889   put_p_memsz(typename Elf_types<size>::Elf_WXword v)
 890   { this->p_->p_memsz = Convert<size, big_endian>::convert_host(v); }
 891
 892   void
 893   put_p_flags(Elf_Word v)
 894   { this->p_->p_flags = Convert<32, big_endian>::convert_host(v); }
 895
 896   void
 897   put_p_align(typename Elf_types<size>::Elf_WXword v)
 898   { this->p_->p_align = Convert<size, big_endian>::convert_host(v); }
 899
 900  private:
 901   internal::Phdr_data<size>* p_;
 902 };
 903
 904 // Accessor class for an ELF symbol table entry.
 905
 906 template<int size, bool big_endian>
 907 class Sym
 908 {
 909  public:
 910   Sym(const unsigned char* p)
 911     : p_(reinterpret_cast<const internal::Sym_data<size>*>(p))
 912   { }
 913
 914   Elf_Word
 915   get_st_name() const
 916   { return Convert<32, big_endian>::convert_host(this->p_->st_name); }
 917
 918   typename Elf_types<size>::Elf_Addr
 919   get_st_value() const
 920   { return Convert<size, big_endian>::convert_host(this->p_->st_value); }
 921
 922   typename Elf_types<size>::Elf_WXword
 923   get_st_size() const
 924   { return Convert<size, big_endian>::convert_host(this->p_->st_size); }
 925
 926   unsigned char
 927   get_st_info() const
 928   { return this->p_->st_info; }
 929
 930   STB
 931   get_st_bind() const
 932   { return elf_st_bind(this->get_st_info()); }
 933
 934   STT
 935   get_st_type() const
 936   { return elf_st_type(this->get_st_info()); }
 937
 938   unsigned char
 939   get_st_other() const
 940   { return this->p_->st_other; }
 941
 942   STV
 943   get_st_visibility() const
 944   { return elf_st_visibility(this->get_st_other()); }
 945
 946   unsigned char
 947   get_st_nonvis() const
 948   { return elf_st_nonvis(this->get_st_other()); }
 949
 950   Elf_Half
 951   get_st_shndx() const
 952   { return Convert<16, big_endian>::convert_host(this->p_->st_shndx); }
 953
 954  private:
 955   const internal::Sym_data<size>* p_;
 956 };
 957
 958 // Writer class for an ELF symbol table entry.
 959
 960 template<int size, bool big_endian>
 961 class Sym_write
 962 {
 963  public:
 964   Sym_write(unsigned char* p)
 965     : p_(reinterpret_cast<internal::Sym_data<size>*>(p))
 966   { }
 967
 968   void
 969   put_st_name(Elf_Word v)
 970   { this->p_->st_name = Convert<32, big_endian>::convert_host(v); }
 971
 972   void
 973   put_st_value(typename Elf_types<size>::Elf_Addr v)
 974   { this->p_->st_value = Convert<size, big_endian>::convert_host(v); }
 975
 976   void
 977   put_st_size(typename Elf_types<size>::Elf_WXword v)
 978   { this->p_->st_size = Convert<size, big_endian>::convert_host(v); }
 979
 980   void
 981   put_st_info(unsigned char v)
 982   { this->p_->st_info = v; }
 983
 984   void
 985   put_st_info(STB bind, STT type)
 986   { this->p_->st_info = elf_st_info(bind, type); }
 987
 988   void
 989   put_st_other(unsigned char v)
 990   { this->p_->st_other = v; }
 991
 992   void
 993   put_st_other(STV vis, unsigned char nonvis)
 994   { this->p_->st_other = elf_st_other(vis, nonvis); }
 995
 996   void
 997   put_st_shndx(Elf_Half v)
 998   { this->p_->st_shndx = Convert<16, big_endian>::convert_host(v); }
 999
1000   Sym<size, big_endian>
1001   sym()
1002   { return Sym<size, big_endian>(reinterpret_cast<unsigned char*>(this->p_)); }
1003
1004  private:
1005   internal::Sym_data<size>* p_;
1006 };
1007
1008 // Accessor classes for Elf relocation table entries.
1009
1010 template<int size, bool big_endian>
1011 class Rel
1012 {
1013  public:
1014   Rel(const unsigned char* p)
1015     : p_(reinterpret_cast<const internal::Rel_data<size>*>(p))
1016   { }
1017
1018   typename Elf_types<size>::Elf_Addr
1019   get_r_offset() const
1020   { return Convert<size, big_endian>::convert_host(this->p_->r_offset); }
1021
1022   typename Elf_types<size>::Elf_WXword
1023   get_r_info() const
1024   { return Convert<size, big_endian>::convert_host(this->p_->r_info); }
1025
1026  private:
1027   const internal::Rel_data<size>* p_;
1028 };
1029
1030 template<int size, bool big_endian>
1031 class Rela
1032 {
1033  public:
1034   Rela(const unsigned char* p)
1035     : p_(reinterpret_cast<const internal::Rela_data<size>*>(p))
1036   { }
1037
1038   typename Elf_types<size>::Elf_Addr
1039   get_r_offset() const
1040   { return Convert<size, big_endian>::convert_host(this->p_->r_offset); }
1041
1042   typename Elf_types<size>::Elf_WXword
1043   get_r_info() const
1044   { return Convert<size, big_endian>::convert_host(this->p_->r_info); }
1045
1046   typename Elf_types<size>::Elf_Swxword
1047   get_r_addend() const
1048   { return Convert<size, big_endian>::convert_host(this->p_->r_addend); }
1049
1050  private:
1051   const internal::Rela_data<size>* p_;
1052 };
1053
1054 } // End namespace elfcpp.
1055
1056 #endif // !defined(ELFPCP_H)