elfcpp/elfcpp.h

   1 // elfcpp.h -- main header file for elfcpp    -*- C++ -*-
   2
   3 // Copyright 2006, 2007, 2008, Free Software Foundation, Inc.
   4 // Written by Ian Lance Taylor <iant@google.com>.
   5
   6 // This file is part of elfcpp.
   7
   8 // This program is free software; you can redistribute it and/or
   9 // modify it under the terms of the GNU Library General Public License
  10 // as published by the Free Software Foundation; either version 2, or
  11 // (at your option) any later version.
  12
  13 // In addition to the permissions in the GNU Library General Public
  14 // License, the Free Software Foundation gives you unlimited
  15 // permission to link the compiled version of this file into
  16 // combinations with other programs, and to distribute those
  17 // combinations without any restriction coming from the use of this
  18 // file.  (The Library Public License restrictions do apply in other
  19 // respects; for example, they cover modification of the file, and
  20 /// distribution when not linked into a combined executable.)
  21
  22 // This program is distributed in the hope that it will be useful, but
  23 // WITHOUT ANY WARRANTY; without even the implied warranty of
  24 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  25 // Library General Public License for more details.
  26
  27 // You should have received a copy of the GNU Library General Public
  28 // License along with this program; if not, write to the Free Software
  29 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
  30 // 02110-1301, USA.
  31
  32 // This is the external interface for elfcpp.
  33
  34 #ifndef ELFCPP_H
  35 #define ELFCPP_H
  36
  37 #include "elfcpp_swap.h"
  38
  39 #include <stdint.h>
  40
  41 namespace elfcpp
  42 {
  43
  44 // Basic ELF types.
  45
  46 // These types are always the same size.
  47
  48 typedef uint16_t Elf_Half;
  49 typedef uint32_t Elf_Word;
  50 typedef int32_t Elf_Sword;
  51 typedef uint64_t Elf_Xword;
  52 typedef int64_t Elf_Sxword;
  53
  54 // These types vary in size depending on the ELF file class.  The
  55 // template parameter should be 32 or 64.
  56
  57 template<int size>
  58 struct Elf_types;
  59
  60 template<>
  61 struct Elf_types<32>
  62 {
  63   typedef uint32_t Elf_Addr;
  64   typedef uint32_t Elf_Off;
  65   typedef uint32_t Elf_WXword;
  66   typedef int32_t Elf_Swxword;
  67 };
  68
  69 template<>
  70 struct Elf_types<64>
  71 {
  72   typedef uint64_t Elf_Addr;
  73   typedef uint64_t Elf_Off;
  74   typedef uint64_t Elf_WXword;
  75   typedef int64_t Elf_Swxword;
  76 };
  77
  78 // Offsets within the Ehdr e_ident field.
  79
  80 const int EI_MAG0 = 0;
  81 const int EI_MAG1 = 1;
  82 const int EI_MAG2 = 2;
  83 const int EI_MAG3 = 3;
  84 const int EI_CLASS = 4;
  85 const int EI_DATA = 5;
  86 const int EI_VERSION = 6;
  87 const int EI_OSABI = 7;
  88 const int EI_ABIVERSION = 8;
  89 const int EI_PAD = 9;
  90 const int EI_NIDENT = 16;
  91
  92 // The valid values found in Ehdr e_ident[EI_MAG0 through EI_MAG3].
  93
  94 const int ELFMAG0 = 0x7f;
  95 const int ELFMAG1 = 'E';
  96 const int ELFMAG2 = 'L';
  97 const int ELFMAG3 = 'F';
  98
  99 // The valid values found in Ehdr e_ident[EI_CLASS].
 100
 101 enum
 102 {
 103   ELFCLASSNONE = 0,
 104   ELFCLASS32 = 1,
 105   ELFCLASS64 = 2
 106 };
 107
 108 // The valid values found in Ehdr e_ident[EI_DATA].
 109
 110 enum
 111 {
 112   ELFDATANONE = 0,
 113   ELFDATA2LSB = 1,
 114   ELFDATA2MSB = 2
 115 };
 116
 117 // The valid values found in Ehdr e_ident[EI_VERSION] and e_version.
 118
 119 enum
 120 {
 121   EV_NONE = 0,
 122   EV_CURRENT = 1
 123 };
 124
 125 // The valid values found in Ehdr e_ident[EI_OSABI].
 126
 127 enum ELFOSABI
 128 {
 129   ELFOSABI_NONE = 0,
 130   ELFOSABI_HPUX = 1,
 131   ELFOSABI_NETBSD = 2,
 132   // ELFOSABI_LINUX is not listed in the ELF standard.
 133   ELFOSABI_LINUX = 3,
 134   // ELFOSABI_HURD is not listed in the ELF standard.
 135   ELFOSABI_HURD = 4,
 136   ELFOSABI_SOLARIS = 6,
 137   ELFOSABI_AIX = 7,
 138   ELFOSABI_IRIX = 8,
 139   ELFOSABI_FREEBSD = 9,
 140   ELFOSABI_TRU64 = 10,
 141   ELFOSABI_MODESTO = 11,
 142   ELFOSABI_OPENBSD = 12,
 143   ELFOSABI_OPENVMS = 13,
 144   ELFOSABI_NSK = 14,
 145   ELFOSABI_AROS = 15,
 146   // A GNU extension for the ARM.
 147   ELFOSABI_ARM = 97,
 148   // A GNU extension for the MSP.
 149   ELFOSABI_STANDALONE = 255
 150 };
 151
 152 // The valid values found in the Ehdr e_type field.
 153
 154 enum ET
 155 {
 156   ET_NONE = 0,
 157   ET_REL = 1,
 158   ET_EXEC = 2,
 159   ET_DYN = 3,
 160   ET_CORE = 4,
 161   ET_LOOS = 0xfe00,
 162   ET_HIOS = 0xfeff,
 163   ET_LOPROC = 0xff00,
 164   ET_HIPROC = 0xffff
 165 };
 166
 167 // The valid values found in the Ehdr e_machine field.
 168
 169 enum EM
 170 {
 171   EM_NONE = 0,
 172   EM_M32 = 1,
 173   EM_SPARC = 2,
 174   EM_386 = 3,
 175   EM_68K = 4,
 176   EM_88K = 5,
 177   // 6 used to be EM_486
 178   EM_860 = 7,
 179   EM_MIPS = 8,
 180   EM_S370 = 9,
 181   EM_MIPS_RS3_LE = 10,
 182   // 11 was the old Sparc V9 ABI.
 183   // 12 through 14 are reserved.
 184   EM_PARISC = 15,
 185   // 16 is reserved.
 186   // Some old PowerPC object files use 17.
 187   EM_VPP500 = 17,
 188   EM_SPARC32PLUS = 18,
 189   EM_960 = 19,
 190   EM_PPC = 20,
 191   EM_PPC64 = 21,
 192   EM_S390 = 22,
 193   // 23 through 35 are served.
 194   EM_V800 = 36,
 195   EM_FR20 = 37,
 196   EM_RH32 = 38,
 197   EM_RCE = 39,
 198   EM_ARM = 40,
 199   EM_ALPHA = 41,
 200   EM_SH = 42,
 201   EM_SPARCV9 = 43,
 202   EM_TRICORE = 44,
 203   EM_ARC = 45,
 204   EM_H8_300 = 46,
 205   EM_H8_300H = 47,
 206   EM_H8S = 48,
 207   EM_H8_500 = 49,
 208   EM_IA_64 = 50,
 209   EM_MIPS_X = 51,
 210   EM_COLDFIRE = 52,
 211   EM_68HC12 = 53,
 212   EM_MMA = 54,
 213   EM_PCP = 55,
 214   EM_NCPU = 56,
 215   EM_NDR1 = 57,
 216   EM_STARCORE = 58,
 217   EM_ME16 = 59,
 218   EM_ST100 = 60,
 219   EM_TINYJ = 61,
 220   EM_X86_64 = 62,
 221   EM_PDSP = 63,
 222   EM_PDP10 = 64,
 223   EM_PDP11 = 65,
 224   EM_FX66 = 66,
 225   EM_ST9PLUS = 67,
 226   EM_ST7 = 68,
 227   EM_68HC16 = 69,
 228   EM_68HC11 = 70,
 229   EM_68HC08 = 71,
 230   EM_68HC05 = 72,
 231   EM_SVX = 73,
 232   EM_ST19 = 74,
 233   EM_VAX = 75,
 234   EM_CRIS = 76,
 235   EM_JAVELIN = 77,
 236   EM_FIREPATH = 78,
 237   EM_ZSP = 79,
 238   EM_MMIX = 80,
 239   EM_HUANY = 81,
 240   EM_PRISM = 82,
 241   EM_AVR = 83,
 242   EM_FR30 = 84,
 243   EM_D10V = 85,
 244   EM_D30V = 86,
 245   EM_V850 = 87,
 246   EM_M32R = 88,
 247   EM_MN10300 = 89,
 248   EM_MN10200 = 90,
 249   EM_PJ = 91,
 250   EM_OPENRISC = 92,
 251   EM_ARC_A5 = 93,
 252   EM_XTENSA = 94,
 253   EM_VIDEOCORE = 95,
 254   EM_TMM_GPP = 96,
 255   EM_NS32K = 97,
 256   EM_TPC = 98,
 257   // Some old picoJava object files use 99 (EM_PJ is correct).
 258   EM_SNP1K = 99,
 259   EM_ST200 = 100,
 260   EM_IP2K = 101,
 261   EM_MAX = 102,
 262   EM_CR = 103,
 263   EM_F2MC16 = 104,
 264   EM_MSP430 = 105,
 265   EM_BLACKFIN = 106,
 266   EM_SE_C33 = 107,
 267   EM_SEP = 108,
 268   EM_ARCA = 109,
 269   EM_UNICORE = 110,
 270   EM_ALTERA_NIOS2 = 113,
 271   EM_CRX = 114,
 272   // The Morph MT.
 273   EM_MT = 0x2530,
 274   // DLX.
 275   EM_DLX = 0x5aa5,
 276   // FRV.
 277   EM_FRV = 0x5441,
 278   // Infineon Technologies 16-bit microcontroller with C166-V2 core.
 279   EM_X16X = 0x4688,
 280   // Xstorym16
 281   EM_XSTORMY16 = 0xad45,
 282   // Renesas M32C
 283   EM_M32C = 0xfeb0,
 284   // Vitesse IQ2000
 285   EM_IQ2000 = 0xfeba,
 286   // NIOS
 287   EM_NIOS32 = 0xfebb
 288   // Old AVR objects used 0x1057 (EM_AVR is correct).
 289   // Old MSP430 objects used 0x1059 (EM_MSP430 is correct).
 290   // Old FR30 objects used 0x3330 (EM_FR30 is correct).
 291   // Old OpenRISC objects used 0x3426 and 0x8472 (EM_OPENRISC is correct).
 292   // Old D10V objects used 0x7650 (EM_D10V is correct).
 293   // Old D30V objects used 0x7676 (EM_D30V is correct).
 294   // Old IP2X objects used 0x8217 (EM_IP2K is correct).
 295   // Old PowerPC objects used 0x9025 (EM_PPC is correct).
 296   // Old Alpha objects used 0x9026 (EM_ALPHA is correct).
 297   // Old M32R objects used 0x9041 (EM_M32R is correct).
 298   // Old V850 objects used 0x9080 (EM_V850 is correct).
 299   // Old S/390 objects used 0xa390 (EM_S390 is correct).
 300   // Old Xtensa objects used 0xabc7 (EM_XTENSA is correct).
 301   // Old MN10300 objects used 0xbeef (EM_MN10300 is correct).
 302   // Old MN10200 objects used 0xdead (EM_MN10200 is correct).
 303 };
 304
 305 // Special section indices.
 306
 307 enum
 308 {
 309   SHN_UNDEF = 0,
 310   SHN_LORESERVE = 0xff00,
 311   SHN_LOPROC = 0xff00,
 312   SHN_HIPROC = 0xff1f,
 313   SHN_LOOS = 0xff20,
 314   SHN_HIOS = 0xff3f,
 315   SHN_ABS = 0xfff1,
 316   SHN_COMMON = 0xfff2,
 317   SHN_XINDEX = 0xffff,
 318   SHN_HIRESERVE = 0xffff,
 319
 320   // Provide for initial and final section ordering in conjunction
 321   // with the SHF_LINK_ORDER and SHF_ORDERED section flags.
 322   SHN_BEFORE = 0xff00,
 323   SHN_AFTER = 0xff01,
 324 };
 325
 326 // The valid values found in the Shdr sh_type field.
 327
 328 enum SHT
 329 {
 330   SHT_NULL = 0,
 331   SHT_PROGBITS = 1,
 332   SHT_SYMTAB = 2,
 333   SHT_STRTAB = 3,
 334   SHT_RELA = 4,
 335   SHT_HASH = 5,
 336   SHT_DYNAMIC = 6,
 337   SHT_NOTE = 7,
 338   SHT_NOBITS = 8,
 339   SHT_REL = 9,
 340   SHT_SHLIB = 10,
 341   SHT_DYNSYM = 11,
 342   SHT_INIT_ARRAY = 14,
 343   SHT_FINI_ARRAY = 15,
 344   SHT_PREINIT_ARRAY = 16,
 345   SHT_GROUP = 17,
 346   SHT_SYMTAB_SHNDX = 18,
 347   SHT_LOOS = 0x60000000,
 348   SHT_HIOS = 0x6fffffff,
 349   SHT_LOPROC = 0x70000000,
 350   SHT_HIPROC = 0x7fffffff,
 351   SHT_LOUSER = 0x80000000,
 352   SHT_HIUSER = 0xffffffff,
 353   // The remaining values are not in the standard.
 354   // Incremental build data.
 355   SHT_GNU_INCREMENTAL_INPUTS = 0x6fff4700,
 356   // Object attributes.
 357   SHT_GNU_ATTRIBUTES = 0x6ffffff5,
 358   // GNU style dynamic hash table.
 359   SHT_GNU_HASH = 0x6ffffff6,
 360   // List of prelink dependencies.
 361   SHT_GNU_LIBLIST = 0x6ffffff7,
 362   // Versions defined by file.
 363   SHT_SUNW_verdef = 0x6ffffffd,
 364   SHT_GNU_verdef = 0x6ffffffd,
 365   // Versions needed by file.
 366   SHT_SUNW_verneed = 0x6ffffffe,
 367   SHT_GNU_verneed = 0x6ffffffe,
 368   // Symbol versions,
 369   SHT_SUNW_versym = 0x6fffffff,
 370   SHT_GNU_versym = 0x6fffffff,
 371
 372   SHT_SPARC_GOTDATA = 0x70000000,
 373
 374   // Link editor is to sort the entries in this section based on the
 375   // address specified in the associated symbol table entry.
 376   SHT_ORDERED = 0x7fffffff,
 377 };
 378
 379 // The valid bit flags found in the Shdr sh_flags field.
 380
 381 enum SHF
 382 {
 383   SHF_WRITE = 0x1,
 384   SHF_ALLOC = 0x2,
 385   SHF_EXECINSTR = 0x4,
 386   SHF_MERGE = 0x10,
 387   SHF_STRINGS = 0x20,
 388   SHF_INFO_LINK = 0x40,
 389   SHF_LINK_ORDER = 0x80,
 390   SHF_OS_NONCONFORMING = 0x100,
 391   SHF_GROUP = 0x200,
 392   SHF_TLS = 0x400,
 393   SHF_MASKOS = 0x0ff00000,
 394   SHF_MASKPROC = 0xf0000000,
 395
 396   // Indicates this section requires ordering in relation to
 397   // other sections of the same type.  Ordered sections are
 398   // combined within the section pointed to by the sh_link entry.
 399   // The sh_info values SHN_BEFORE and SHN_AFTER imply that the
 400   // sorted section is to precede or follow, respectively, all
 401   // other sections in the set being ordered.
 402   SHF_ORDERED = 0x40000000,
 403   // This section is excluded from input to the link-edit of an
 404   // executable or shared object.  This flag is ignored if SHF_ALLOC
 405   // is also set, or if relocations exist against the section.
 406   SHF_EXCLUDE = 0x80000000,
 407 };
 408
 409 // Bit flags which appear in the first 32-bit word of the section data
 410 // of a SHT_GROUP section.
 411
 412 enum
 413 {
 414   GRP_COMDAT = 0x1,
 415   GRP_MASKOS = 0x0ff00000,
 416   GRP_MASKPROC = 0xf0000000
 417 };
 418
 419 // The valid values found in the Phdr p_type field.
 420
 421 enum PT
 422 {
 423   PT_NULL = 0,
 424   PT_LOAD = 1,
 425   PT_DYNAMIC = 2,
 426   PT_INTERP = 3,
 427   PT_NOTE = 4,
 428   PT_SHLIB = 5,
 429   PT_PHDR = 6,
 430   PT_TLS = 7,
 431   PT_LOOS = 0x60000000,
 432   PT_HIOS = 0x6fffffff,
 433   PT_LOPROC = 0x70000000,
 434   PT_HIPROC = 0x7fffffff,
 435   // The remaining values are not in the standard.
 436   // Frame unwind information.
 437   PT_GNU_EH_FRAME = 0x6474e550,
 438   PT_SUNW_EH_FRAME = 0x6474e550,
 439   // Stack flags.
 440   PT_GNU_STACK = 0x6474e551,
 441   // Read only after relocation.
 442   PT_GNU_RELRO = 0x6474e552
 443 };
 444
 445 // The valid bit flags found in the Phdr p_flags field.
 446
 447 enum PF
 448 {
 449   PF_X = 0x1,
 450   PF_W = 0x2,
 451   PF_R = 0x4,
 452   PF_MASKOS = 0x0ff00000,
 453   PF_MASKPROC = 0xf0000000
 454 };
 455
 456 // Symbol binding from Sym st_info field.
 457
 458 enum STB
 459 {
 460   STB_LOCAL = 0,
 461   STB_GLOBAL = 1,
 462   STB_WEAK = 2,
 463   STB_LOOS = 10,
 464   STB_HIOS = 12,
 465   STB_LOPROC = 13,
 466   STB_HIPROC = 15
 467 };
 468
 469 // Symbol types from Sym st_info field.
 470
 471 enum STT
 472 {
 473   STT_NOTYPE = 0,
 474   STT_OBJECT = 1,
 475   STT_FUNC = 2,
 476   STT_SECTION = 3,
 477   STT_FILE = 4,
 478   STT_COMMON = 5,
 479   STT_TLS = 6,
 480   STT_LOOS = 10,
 481   STT_GNU_IFUNC = 10,
 482   STT_HIOS = 12,
 483   STT_LOPROC = 13,
 484   STT_HIPROC = 15,
 485
 486   // The section type that must be used for register symbols on
 487   // Sparc.  These symbols initialize a global register.
 488   STT_SPARC_REGISTER = 13,
 489 };
 490
 491 inline STB
 492 elf_st_bind(unsigned char info)
 493 {
 494   return static_cast<STB>(info >> 4);
 495 }
 496
 497 inline STT
 498 elf_st_type(unsigned char info)
 499 {
 500   return static_cast<STT>(info & 0xf);
 501 }
 502
 503 inline unsigned char
 504 elf_st_info(STB bind, STT type)
 505 {
 506   return ((static_cast<unsigned char>(bind) << 4)
 507           + (static_cast<unsigned char>(type) & 0xf));
 508 }
 509
 510 // Symbol visibility from Sym st_other field.
 511
 512 enum STV
 513 {
 514   STV_DEFAULT = 0,
 515   STV_INTERNAL = 1,
 516   STV_HIDDEN = 2,
 517   STV_PROTECTED = 3
 518 };
 519
 520 inline STV
 521 elf_st_visibility(unsigned char other)
 522 {
 523   return static_cast<STV>(other & 0x3);
 524 }
 525
 526 inline unsigned char
 527 elf_st_nonvis(unsigned char other)
 528 {
 529   return static_cast<STV>(other >> 2);
 530 }
 531
 532 inline unsigned char
 533 elf_st_other(STV vis, unsigned char nonvis)
 534 {
 535   return ((nonvis << 2)
 536           + (static_cast<unsigned char>(vis) & 3));
 537 }
 538
 539 // Reloc information from Rel/Rela r_info field.
 540
 541 template<int size>
 542 unsigned int
 543 elf_r_sym(typename Elf_types<size>::Elf_WXword);
 544
 545 template<>
 546 inline unsigned int
 547 elf_r_sym<32>(Elf_Word v)
 548 {
 549   return v >> 8;
 550 }
 551
 552 template<>
 553 inline unsigned int
 554 elf_r_sym<64>(Elf_Xword v)
 555 {
 556   return v >> 32;
 557 }
 558
 559 template<int size>
 560 unsigned int
 561 elf_r_type(typename Elf_types<size>::Elf_WXword);
 562
 563 template<>
 564 inline unsigned int
 565 elf_r_type<32>(Elf_Word v)
 566 {
 567   return v & 0xff;
 568 }
 569
 570 template<>
 571 inline unsigned int
 572 elf_r_type<64>(Elf_Xword v)
 573 {
 574   return v & 0xffffffff;
 575 }
 576
 577 template<int size>
 578 typename Elf_types<size>::Elf_WXword
 579 elf_r_info(unsigned int s, unsigned int t);
 580
 581 template<>
 582 inline Elf_Word
 583 elf_r_info<32>(unsigned int s, unsigned int t)
 584 {
 585   return (s << 8) + (t & 0xff);
 586 }
 587
 588 template<>
 589 inline Elf_Xword
 590 elf_r_info<64>(unsigned int s, unsigned int t)
 591 {
 592   return (static_cast<Elf_Xword>(s) << 32) + (t & 0xffffffff);
 593 }
 594
 595 // Dynamic tags found in the PT_DYNAMIC segment.
 596
 597 enum DT
 598 {
 599   DT_NULL = 0,
 600   DT_NEEDED = 1,
 601   DT_PLTRELSZ = 2,
 602   DT_PLTGOT = 3,
 603   DT_HASH = 4,
 604   DT_STRTAB = 5,
 605   DT_SYMTAB = 6,
 606   DT_RELA = 7,
 607   DT_RELASZ = 8,
 608   DT_RELAENT = 9,
 609   DT_STRSZ = 10,
 610   DT_SYMENT = 11,
 611   DT_INIT = 12,
 612   DT_FINI = 13,
 613   DT_SONAME = 14,
 614   DT_RPATH = 15,
 615   DT_SYMBOLIC = 16,
 616   DT_REL = 17,
 617   DT_RELSZ = 18,
 618   DT_RELENT = 19,
 619   DT_PLTREL = 20,
 620   DT_DEBUG = 21,
 621   DT_TEXTREL = 22,
 622   DT_JMPREL = 23,
 623   DT_BIND_NOW = 24,
 624   DT_INIT_ARRAY = 25,
 625   DT_FINI_ARRAY = 26,
 626   DT_INIT_ARRAYSZ = 27,
 627   DT_FINI_ARRAYSZ = 28,
 628   DT_RUNPATH = 29,
 629   DT_FLAGS = 30,
 630   DT_ENCODING = 32,
 631   DT_PREINIT_ARRAY = 33,
 632   DT_PREINIT_ARRAYSZ = 33,
 633   DT_LOOS = 0x6000000d,
 634   DT_HIOS = 0x6ffff000,
 635   DT_LOPROC = 0x70000000,
 636   DT_HIPROC = 0x7fffffff,
 637
 638   // The remaining values are extensions used by GNU or Solaris.
 639   DT_VALRNGLO = 0x6ffffd00,
 640   DT_GNU_PRELINKED = 0x6ffffdf5,
 641   DT_GNU_CONFLICTSZ = 0x6ffffdf6,
 642   DT_GNU_LIBLISTSZ = 0x6ffffdf7,
 643   DT_CHECKSUM = 0x6ffffdf8,
 644   DT_PLTPADSZ = 0x6ffffdf9,
 645   DT_MOVEENT = 0x6ffffdfa,
 646   DT_MOVESZ = 0x6ffffdfb,
 647   DT_FEATURE = 0x6ffffdfc,
 648   DT_POSFLAG_1 = 0x6ffffdfd,
 649   DT_SYMINSZ = 0x6ffffdfe,
 650   DT_SYMINENT = 0x6ffffdff,
 651   DT_VALRNGHI = 0x6ffffdff,
 652
 653   DT_ADDRRNGLO = 0x6ffffe00,
 654   DT_GNU_HASH = 0x6ffffef5,
 655   DT_TLSDESC_PLT = 0x6ffffef6,
 656   DT_TLSDESC_GOT = 0x6ffffef7,
 657   DT_GNU_CONFLICT = 0x6ffffef8,
 658   DT_GNU_LIBLIST = 0x6ffffef9,
 659   DT_CONFIG = 0x6ffffefa,
 660   DT_DEPAUDIT = 0x6ffffefb,
 661   DT_AUDIT = 0x6ffffefc,
 662   DT_PLTPAD = 0x6ffffefd,
 663   DT_MOVETAB = 0x6ffffefe,
 664   DT_SYMINFO = 0x6ffffeff,
 665   DT_ADDRRNGHI = 0x6ffffeff,
 666
 667   DT_RELACOUNT = 0x6ffffff9,
 668   DT_RELCOUNT = 0x6ffffffa,
 669   DT_FLAGS_1 = 0x6ffffffb,
 670   DT_VERDEF = 0x6ffffffc,
 671   DT_VERDEFNUM = 0x6ffffffd,
 672   DT_VERNEED = 0x6ffffffe,
 673   DT_VERNEEDNUM = 0x6fffffff,
 674
 675   DT_VERSYM = 0x6ffffff0,
 676
 677   // Specify the value of _GLOBAL_OFFSET_TABLE_.
 678   DT_PPC_GOT = 0x70000000,
 679
 680   // Specify the start of the .glink section.
 681   DT_PPC64_GLINK = 0x70000000,
 682
 683   // Specify the start and size of the .opd section.
 684   DT_PPC64_OPD = 0x70000001,
 685   DT_PPC64_OPDSZ = 0x70000002,
 686
 687   // The index of an STT_SPARC_REGISTER symbol within the DT_SYMTAB
 688   // symbol table.  One dynamic entry exists for every STT_SPARC_REGISTER
 689   // symbol in the symbol table.
 690   DT_SPARC_REGISTER = 0x70000001,
 691
 692   DT_AUXILIARY = 0x7ffffffd,
 693   DT_USED = 0x7ffffffe,
 694   DT_FILTER = 0x7fffffff
 695 };
 696
 697 // Flags found in the DT_FLAGS dynamic element.
 698
 699 enum DF
 700 {
 701   DF_ORIGIN = 0x1,
 702   DF_SYMBOLIC = 0x2,
 703   DF_TEXTREL = 0x4,
 704   DF_BIND_NOW = 0x8,
 705   DF_STATIC_TLS = 0x10
 706 };
 707
 708 // Flags found in the DT_FLAGS_1 dynamic element.
 709
 710 enum DF_1
 711 {
 712   DF_1_NOW = 0x1,
 713   DF_1_GLOBAL = 0x2,
 714   DF_1_GROUP = 0x4,
 715   DF_1_NODELETE = 0x8,
 716   DF_1_LOADFLTR = 0x10,
 717   DF_1_INITFIRST = 0x20,
 718   DF_1_NOOPEN = 0x40,
 719   DF_1_ORIGIN = 0x80,
 720   DF_1_DIRECT = 0x100,
 721   DF_1_TRANS = 0x200,
 722   DF_1_INTERPOSE = 0x400,
 723   DF_1_NODEFLIB = 0x800,
 724   DF_1_NODUMP = 0x1000,
 725   DF_1_CONLFAT = 0x2000,
 726 };
 727
 728 // Version numbers which appear in the vd_version field of a Verdef
 729 // structure.
 730
 731 const int VER_DEF_NONE = 0;
 732 const int VER_DEF_CURRENT = 1;
 733
 734 // Version numbers which appear in the vn_version field of a Verneed
 735 // structure.
 736
 737 const int VER_NEED_NONE = 0;
 738 const int VER_NEED_CURRENT = 1;
 739
 740 // Bit flags which appear in vd_flags of Verdef and vna_flags of
 741 // Vernaux.
 742
 743 const int VER_FLG_BASE = 0x1;
 744 const int VER_FLG_WEAK = 0x2;
 745
 746 // Special constants found in the SHT_GNU_versym entries.
 747
 748 const int VER_NDX_LOCAL = 0;
 749 const int VER_NDX_GLOBAL = 1;
 750
 751 // A SHT_GNU_versym section holds 16-bit words.  This bit is set if
 752 // the symbol is hidden and can only be seen when referenced using an
 753 // explicit version number.  This is a GNU extension.
 754
 755 const int VERSYM_HIDDEN = 0x8000;
 756
 757 // This is the mask for the rest of the data in a word read from a
 758 // SHT_GNU_versym section.
 759
 760 const int VERSYM_VERSION = 0x7fff;
 761
 762 // Note descriptor type codes for notes in a non-core file with an
 763 // empty name.
 764
 765 enum
 766 {
 767   // A version string.
 768   NT_VERSION = 1,
 769   // An architecture string.
 770   NT_ARCH = 2
 771 };
 772
 773 // Note descriptor type codes for notes in a non-core file with the
 774 // name "GNU".
 775
 776 enum
 777 {
 778   // The minimum ABI level.  This is used by the dynamic linker to
 779   // describe the minimal kernel version on which a shared library may
 780   // be used.  Th value should be four words.  Word 0 is an OS
 781   // descriptor (see below).  Word 1 is the major version of the ABI.
 782   // Word 2 is the minor version.  Word 3 is the subminor version.
 783   NT_GNU_ABI_TAG = 1,
 784   // Hardware capabilities information.  Word 0 is the number of
 785   // entries.  Word 1 is a bitmask of enabled entries.  The rest of
 786   // the descriptor is a series of entries, where each entry is a
 787   // single byte followed by a nul terminated string.  The byte gives
 788   // the bit number to test if enabled in the bitmask.
 789   NT_GNU_HWCAP = 2,
 790   // The build ID as set by the linker's --build-id option.  The
 791   // format of the descriptor depends on the build ID style.
 792   NT_GNU_BUILD_ID = 3,
 793   // The version of gold used to link.  Th descriptor is just a
 794   // string.
 795   NT_GNU_GOLD_VERSION = 4
 796 };
 797
 798 // The OS values which may appear in word 0 of a NT_GNU_ABI_TAG note.
 799
 800 enum
 801 {
 802   ELF_NOTE_OS_LINUX = 0,
 803   ELF_NOTE_OS_GNU = 1,
 804   ELF_NOTE_OS_SOLARIS2 = 2,
 805   ELF_NOTE_OS_FREEBSD = 3,
 806   ELF_NOTE_OS_NETBSD = 4,
 807   ELF_NOTE_OS_SYLLABLE = 5
 808 };
 809
 810 } // End namespace elfcpp.
 811
 812 // Include internal details after defining the types.
 813 #include "elfcpp_internal.h"
 814
 815 namespace elfcpp
 816 {
 817
 818 // The offset of the ELF file header in the ELF file.
 819
 820 const int file_header_offset = 0;
 821
 822 // ELF structure sizes.
 823
 824 template<int size>
 825 struct Elf_sizes
 826 {
 827   // Size of ELF file header.
 828   static const int ehdr_size = sizeof(internal::Ehdr_data<size>);
 829   // Size of ELF segment header.
 830   static const int phdr_size = sizeof(internal::Phdr_data<size>);
 831   // Size of ELF section header.
 832   static const int shdr_size = sizeof(internal::Shdr_data<size>);
 833   // Size of ELF symbol table entry.
 834   static const int sym_size = sizeof(internal::Sym_data<size>);
 835   // Sizes of ELF reloc entries.
 836   static const int rel_size = sizeof(internal::Rel_data<size>);
 837   static const int rela_size = sizeof(internal::Rela_data<size>);
 838   // Size of ELF dynamic entry.
 839   static const int dyn_size = sizeof(internal::Dyn_data<size>);
 840   // Size of ELF version structures.
 841   static const int verdef_size = sizeof(internal::Verdef_data);
 842   static const int verdaux_size = sizeof(internal::Verdaux_data);
 843   static const int verneed_size = sizeof(internal::Verneed_data);
 844   static const int vernaux_size = sizeof(internal::Vernaux_data);
 845 };
 846
 847 // Accessor class for the ELF file header.
 848
 849 template<int size, bool big_endian>
 850 class Ehdr
 851 {
 852  public:
 853   Ehdr(const unsigned char* p)
 854     : p_(reinterpret_cast<const internal::Ehdr_data<size>*>(p))
 855   { }
 856
 857   template<typename File>
 858   Ehdr(File* file, typename File::Location loc)
 859     : p_(reinterpret_cast<const internal::Ehdr_data<size>*>(
 860            file->view(loc.file_offset, loc.data_size).data()))
 861   { }
 862
 863   const unsigned char*
 864   get_e_ident() const
 865   { return this->p_->e_ident; }
 866
 867   Elf_Half
 868   get_e_type() const
 869   { return Convert<16, big_endian>::convert_host(this->p_->e_type); }
 870
 871   Elf_Half
 872   get_e_machine() const
 873   { return Convert<16, big_endian>::convert_host(this->p_->e_machine); }
 874
 875   Elf_Word
 876   get_e_version() const
 877   { return Convert<32, big_endian>::convert_host(this->p_->e_version); }
 878
 879   typename Elf_types<size>::Elf_Addr
 880   get_e_entry() const
 881   { return Convert<size, big_endian>::convert_host(this->p_->e_entry); }
 882
 883   typename Elf_types<size>::Elf_Off
 884   get_e_phoff() const
 885   { return Convert<size, big_endian>::convert_host(this->p_->e_phoff); }
 886
 887   typename Elf_types<size>::Elf_Off
 888   get_e_shoff() const
 889   { return Convert<size, big_endian>::convert_host(this->p_->e_shoff); }
 890
 891   Elf_Word
 892   get_e_flags() const
 893   { return Convert<32, big_endian>::convert_host(this->p_->e_flags); }
 894
 895   Elf_Half
 896   get_e_ehsize() const
 897   { return Convert<16, big_endian>::convert_host(this->p_->e_ehsize); }
 898
 899   Elf_Half
 900   get_e_phentsize() const
 901   { return Convert<16, big_endian>::convert_host(this->p_->e_phentsize); }
 902
 903   Elf_Half
 904   get_e_phnum() const
 905   { return Convert<16, big_endian>::convert_host(this->p_->e_phnum); }
 906
 907   Elf_Half
 908   get_e_shentsize() const
 909   { return Convert<16, big_endian>::convert_host(this->p_->e_shentsize); }
 910
 911   Elf_Half
 912   get_e_shnum() const
 913   { return Convert<16, big_endian>::convert_host(this->p_->e_shnum); }
 914
 915   Elf_Half
 916   get_e_shstrndx() const
 917   { return Convert<16, big_endian>::convert_host(this->p_->e_shstrndx); }
 918
 919  private:
 920   const internal::Ehdr_data<size>* p_;
 921 };
 922
 923 // Write class for the ELF file header.
 924
 925 template<int size, bool big_endian>
 926 class Ehdr_write
 927 {
 928  public:
 929   Ehdr_write(unsigned char* p)
 930     : p_(reinterpret_cast<internal::Ehdr_data<size>*>(p))
 931   { }
 932
 933   void
 934   put_e_ident(const unsigned char v[EI_NIDENT]) const
 935   { memcpy(this->p_->e_ident, v, EI_NIDENT); }
 936
 937   void
 938   put_e_type(Elf_Half v)
 939   { this->p_->e_type = Convert<16, big_endian>::convert_host(v); }
 940
 941   void
 942   put_e_machine(Elf_Half v)
 943   { this->p_->e_machine = Convert<16, big_endian>::convert_host(v); }
 944
 945   void
 946   put_e_version(Elf_Word v)
 947   { this->p_->e_version = Convert<32, big_endian>::convert_host(v); }
 948
 949   void
 950   put_e_entry(typename Elf_types<size>::Elf_Addr v)
 951   { this->p_->e_entry = Convert<size, big_endian>::convert_host(v); }
 952
 953   void
 954   put_e_phoff(typename Elf_types<size>::Elf_Off v)
 955   { this->p_->e_phoff = Convert<size, big_endian>::convert_host(v); }
 956
 957   void
 958   put_e_shoff(typename Elf_types<size>::Elf_Off v)
 959   { this->p_->e_shoff = Convert<size, big_endian>::convert_host(v); }
 960
 961   void
 962   put_e_flags(Elf_Word v)
 963   { this->p_->e_flags = Convert<32, big_endian>::convert_host(v); }
 964
 965   void
 966   put_e_ehsize(Elf_Half v)
 967   { this->p_->e_ehsize = Convert<16, big_endian>::convert_host(v); }
 968
 969   void
 970   put_e_phentsize(Elf_Half v)
 971   { this->p_->e_phentsize = Convert<16, big_endian>::convert_host(v); }
 972
 973   void
 974   put_e_phnum(Elf_Half v)
 975   { this->p_->e_phnum = Convert<16, big_endian>::convert_host(v); }
 976
 977   void
 978   put_e_shentsize(Elf_Half v)
 979   { this->p_->e_shentsize = Convert<16, big_endian>::convert_host(v); }
 980
 981   void
 982   put_e_shnum(Elf_Half v)
 983   { this->p_->e_shnum = Convert<16, big_endian>::convert_host(v); }
 984
 985   void
 986   put_e_shstrndx(Elf_Half v)
 987   { this->p_->e_shstrndx = Convert<16, big_endian>::convert_host(v); }
 988
 989  private:
 990   internal::Ehdr_data<size>* p_;
 991 };
 992
 993 // Accessor class for an ELF section header.
 994
 995 template<int size, bool big_endian>
 996 class Shdr
 997 {
 998  public:
 999   Shdr(const unsigned char* p)
1000     : p_(reinterpret_cast<const internal::Shdr_data<size>*>(p))
1001   { }
1002
1003   template<typename File>
1004   Shdr(File* file, typename File::Location loc)
1005     : p_(reinterpret_cast<const internal::Shdr_data<size>*>(
1006            file->view(loc.file_offset, loc.data_size).data()))
1007   { }
1008
1009   Elf_Word
1010   get_sh_name() const
1011   { return Convert<32, big_endian>::convert_host(this->p_->sh_name); }
1012
1013   Elf_Word
1014   get_sh_type() const
1015   { return Convert<32, big_endian>::convert_host(this->p_->sh_type); }
1016
1017   typename Elf_types<size>::Elf_WXword
1018   get_sh_flags() const
1019   { return Convert<size, big_endian>::convert_host(this->p_->sh_flags); }
1020
1021   typename Elf_types<size>::Elf_Addr
1022   get_sh_addr() const
1023   { return Convert<size, big_endian>::convert_host(this->p_->sh_addr); }
1024
1025   typename Elf_types<size>::Elf_Off
1026   get_sh_offset() const
1027   { return Convert<size, big_endian>::convert_host(this->p_->sh_offset); }
1028
1029   typename Elf_types<size>::Elf_WXword
1030   get_sh_size() const
1031   { return Convert<size, big_endian>::convert_host(this->p_->sh_size); }
1032
1033   Elf_Word
1034   get_sh_link() const
1035   { return Convert<32, big_endian>::convert_host(this->p_->sh_link); }
1036
1037   Elf_Word
1038   get_sh_info() const
1039   { return Convert<32, big_endian>::convert_host(this->p_->sh_info); }
1040
1041   typename Elf_types<size>::Elf_WXword
1042   get_sh_addralign() const
1043   { return
1044       Convert<size, big_endian>::convert_host(this->p_->sh_addralign); }
1045
1046   typename Elf_types<size>::Elf_WXword
1047   get_sh_entsize() const
1048   { return Convert<size, big_endian>::convert_host(this->p_->sh_entsize); }
1049
1050  private:
1051   const internal::Shdr_data<size>* p_;
1052 };
1053
1054 // Write class for an ELF section header.
1055
1056 template<int size, bool big_endian>
1057 class Shdr_write
1058 {
1059  public:
1060   Shdr_write(unsigned char* p)
1061     : p_(reinterpret_cast<internal::Shdr_data<size>*>(p))
1062   { }
1063
1064   void
1065   put_sh_name(Elf_Word v)
1066   { this->p_->sh_name = Convert<32, big_endian>::convert_host(v); }
1067
1068   void
1069   put_sh_type(Elf_Word v)
1070   { this->p_->sh_type = Convert<32, big_endian>::convert_host(v); }
1071
1072   void
1073   put_sh_flags(typename Elf_types<size>::Elf_WXword v)
1074   { this->p_->sh_flags = Convert<size, big_endian>::convert_host(v); }
1075
1076   void
1077   put_sh_addr(typename Elf_types<size>::Elf_Addr v)
1078   { this->p_->sh_addr = Convert<size, big_endian>::convert_host(v); }
1079
1080   void
1081   put_sh_offset(typename Elf_types<size>::Elf_Off v)
1082   { this->p_->sh_offset = Convert<size, big_endian>::convert_host(v); }
1083
1084   void
1085   put_sh_size(typename Elf_types<size>::Elf_WXword v)
1086   { this->p_->sh_size = Convert<size, big_endian>::convert_host(v); }
1087
1088   void
1089   put_sh_link(Elf_Word v)
1090   { this->p_->sh_link = Convert<32, big_endian>::convert_host(v); }
1091
1092   void
1093   put_sh_info(Elf_Word v)
1094   { this->p_->sh_info = Convert<32, big_endian>::convert_host(v); }
1095
1096   void
1097   put_sh_addralign(typename Elf_types<size>::Elf_WXword v)
1098   { this->p_->sh_addralign = Convert<size, big_endian>::convert_host(v); }
1099
1100   void
1101   put_sh_entsize(typename Elf_types<size>::Elf_WXword v)
1102   { this->p_->sh_entsize = Convert<size, big_endian>::convert_host(v); }
1103
1104  private:
1105   internal::Shdr_data<size>* p_;
1106 };
1107
1108 // Accessor class for an ELF segment header.
1109
1110 template<int size, bool big_endian>
1111 class Phdr
1112 {
1113  public:
1114   Phdr(const unsigned char* p)
1115     : p_(reinterpret_cast<const internal::Phdr_data<size>*>(p))
1116   { }
1117
1118   template<typename File>
1119   Phdr(File* file, typename File::Location loc)
1120     : p_(reinterpret_cast<internal::Phdr_data<size>*>(
1121            file->view(loc.file_offset, loc.data_size).data()))
1122   { }
1123
1124   Elf_Word
1125   get_p_type() const
1126   { return Convert<32, big_endian>::convert_host(this->p_->p_type); }
1127
1128   typename Elf_types<size>::Elf_Off
1129   get_p_offset() const
1130   { return Convert<size, big_endian>::convert_host(this->p_->p_offset); }
1131
1132   typename Elf_types<size>::Elf_Addr
1133   get_p_vaddr() const
1134   { return Convert<size, big_endian>::convert_host(this->p_->p_vaddr); }
1135
1136   typename Elf_types<size>::Elf_Addr
1137   get_p_paddr() const
1138   { return Convert<size, big_endian>::convert_host(this->p_->p_paddr); }
1139
1140   typename Elf_types<size>::Elf_WXword
1141   get_p_filesz() const
1142   { return Convert<size, big_endian>::convert_host(this->p_->p_filesz); }
1143
1144   typename Elf_types<size>::Elf_WXword
1145   get_p_memsz() const
1146   { return Convert<size, big_endian>::convert_host(this->p_->p_memsz); }
1147
1148   Elf_Word
1149   get_p_flags() const
1150   { return Convert<32, big_endian>::convert_host(this->p_->p_flags); }
1151
1152   typename Elf_types<size>::Elf_WXword
1153   get_p_align() const
1154   { return Convert<size, big_endian>::convert_host(this->p_->p_align); }
1155
1156  private:
1157   const internal::Phdr_data<size>* p_;
1158 };
1159
1160 // Write class for an ELF segment header.
1161
1162 template<int size, bool big_endian>
1163 class Phdr_write
1164 {
1165  public:
1166   Phdr_write(unsigned char* p)
1167     : p_(reinterpret_cast<internal::Phdr_data<size>*>(p))
1168   { }
1169
1170   void
1171   put_p_type(Elf_Word v)
1172   { this->p_->p_type = Convert<32, big_endian>::convert_host(v); }
1173
1174   void
1175   put_p_offset(typename Elf_types<size>::Elf_Off v)
1176   { this->p_->p_offset = Convert<size, big_endian>::convert_host(v); }
1177
1178   void
1179   put_p_vaddr(typename Elf_types<size>::Elf_Addr v)
1180   { this->p_->p_vaddr = Convert<size, big_endian>::convert_host(v); }
1181
1182   void
1183   put_p_paddr(typename Elf_types<size>::Elf_Addr v)
1184   { this->p_->p_paddr = Convert<size, big_endian>::convert_host(v); }
1185
1186   void
1187   put_p_filesz(typename Elf_types<size>::Elf_WXword v)
1188   { this->p_->p_filesz = Convert<size, big_endian>::convert_host(v); }
1189
1190   void
1191   put_p_memsz(typename Elf_types<size>::Elf_WXword v)
1192   { this->p_->p_memsz = Convert<size, big_endian>::convert_host(v); }
1193
1194   void
1195   put_p_flags(Elf_Word v)
1196   { this->p_->p_flags = Convert<32, big_endian>::convert_host(v); }
1197
1198   void
1199   put_p_align(typename Elf_types<size>::Elf_WXword v)
1200   { this->p_->p_align = Convert<size, big_endian>::convert_host(v); }
1201
1202  private:
1203   internal::Phdr_data<size>* p_;
1204 };
1205
1206 // Accessor class for an ELF symbol table entry.
1207
1208 template<int size, bool big_endian>
1209 class Sym
1210 {
1211  public:
1212   Sym(const unsigned char* p)
1213     : p_(reinterpret_cast<const internal::Sym_data<size>*>(p))
1214   { }
1215
1216   template<typename File>
1217   Sym(File* file, typename File::Location loc)
1218     : p_(reinterpret_cast<const internal::Sym_data<size>*>(
1219            file->view(loc.file_offset, loc.data_size).data()))
1220   { }
1221
1222   Elf_Word
1223   get_st_name() const
1224   { return Convert<32, big_endian>::convert_host(this->p_->st_name); }
1225
1226   typename Elf_types<size>::Elf_Addr
1227   get_st_value() const
1228   { return Convert<size, big_endian>::convert_host(this->p_->st_value); }
1229
1230   typename Elf_types<size>::Elf_WXword
1231   get_st_size() const
1232   { return Convert<size, big_endian>::convert_host(this->p_->st_size); }
1233
1234   unsigned char
1235   get_st_info() const
1236   { return this->p_->st_info; }
1237
1238   STB
1239   get_st_bind() const
1240   { return elf_st_bind(this->get_st_info()); }
1241
1242   STT
1243   get_st_type() const
1244   { return elf_st_type(this->get_st_info()); }
1245
1246   unsigned char
1247   get_st_other() const
1248   { return this->p_->st_other; }
1249
1250   STV
1251   get_st_visibility() const
1252   { return elf_st_visibility(this->get_st_other()); }
1253
1254   unsigned char
1255   get_st_nonvis() const
1256   { return elf_st_nonvis(this->get_st_other()); }
1257
1258   Elf_Half
1259   get_st_shndx() const
1260   { return Convert<16, big_endian>::convert_host(this->p_->st_shndx); }
1261
1262  private:
1263   const internal::Sym_data<size>* p_;
1264 };
1265
1266 // Writer class for an ELF symbol table entry.
1267
1268 template<int size, bool big_endian>
1269 class Sym_write
1270 {
1271  public:
1272   Sym_write(unsigned char* p)
1273     : p_(reinterpret_cast<internal::Sym_data<size>*>(p))
1274   { }
1275
1276   void
1277   put_st_name(Elf_Word v)
1278   { this->p_->st_name = Convert<32, big_endian>::convert_host(v); }
1279
1280   void
1281   put_st_value(typename Elf_types<size>::Elf_Addr v)
1282   { this->p_->st_value = Convert<size, big_endian>::convert_host(v); }
1283
1284   void
1285   put_st_size(typename Elf_types<size>::Elf_WXword v)
1286   { this->p_->st_size = Convert<size, big_endian>::convert_host(v); }
1287
1288   void
1289   put_st_info(unsigned char v)
1290   { this->p_->st_info = v; }
1291
1292   void
1293   put_st_info(STB bind, STT type)
1294   { this->p_->st_info = elf_st_info(bind, type); }
1295
1296   void
1297   put_st_other(unsigned char v)
1298   { this->p_->st_other = v; }
1299
1300   void
1301   put_st_other(STV vis, unsigned char nonvis)
1302   { this->p_->st_other = elf_st_other(vis, nonvis); }
1303
1304   void
1305   put_st_shndx(Elf_Half v)
1306   { this->p_->st_shndx = Convert<16, big_endian>::convert_host(v); }
1307
1308   Sym<size, big_endian>
1309   sym()
1310   { return Sym<size, big_endian>(reinterpret_cast<unsigned char*>(this->p_)); }
1311
1312  private:
1313   internal::Sym_data<size>* p_;
1314 };
1315
1316 // Accessor classes for an ELF REL relocation entry.
1317
1318 template<int size, bool big_endian>
1319 class Rel
1320 {
1321  public:
1322   Rel(const unsigned char* p)
1323     : p_(reinterpret_cast<const internal::Rel_data<size>*>(p))
1324   { }
1325
1326   template<typename File>
1327   Rel(File* file, typename File::Location loc)
1328     : p_(reinterpret_cast<const internal::Rel_data<size>*>(
1329            file->view(loc.file_offset, loc.data_size).data()))
1330   { }
1331
1332   typename Elf_types<size>::Elf_Addr
1333   get_r_offset() const
1334   { return Convert<size, big_endian>::convert_host(this->p_->r_offset); }
1335
1336   typename Elf_types<size>::Elf_WXword
1337   get_r_info() const
1338   { return Convert<size, big_endian>::convert_host(this->p_->r_info); }
1339
1340  private:
1341   const internal::Rel_data<size>* p_;
1342 };
1343
1344 // Writer class for an ELF Rel relocation.
1345
1346 template<int size, bool big_endian>
1347 class Rel_write
1348 {
1349  public:
1350   Rel_write(unsigned char* p)
1351     : p_(reinterpret_cast<internal::Rel_data<size>*>(p))
1352   { }
1353
1354   void
1355   put_r_offset(typename Elf_types<size>::Elf_Addr v)
1356   { this->p_->r_offset = Convert<size, big_endian>::convert_host(v); }
1357
1358   void
1359   put_r_info(typename Elf_types<size>::Elf_WXword v)
1360   { this->p_->r_info = Convert<size, big_endian>::convert_host(v); }
1361
1362  private:
1363   internal::Rel_data<size>* p_;
1364 };
1365
1366 // Accessor class for an ELF Rela relocation.
1367
1368 template<int size, bool big_endian>
1369 class Rela
1370 {
1371  public:
1372   Rela(const unsigned char* p)
1373     : p_(reinterpret_cast<const internal::Rela_data<size>*>(p))
1374   { }
1375
1376   template<typename File>
1377   Rela(File* file, typename File::Location loc)
1378     : p_(reinterpret_cast<const internal::Rela_data<size>*>(
1379            file->view(loc.file_offset, loc.data_size).data()))
1380   { }
1381
1382   typename Elf_types<size>::Elf_Addr
1383   get_r_offset() const
1384   { return Convert<size, big_endian>::convert_host(this->p_->r_offset); }
1385
1386   typename Elf_types<size>::Elf_WXword
1387   get_r_info() const
1388   { return Convert<size, big_endian>::convert_host(this->p_->r_info); }
1389
1390   typename Elf_types<size>::Elf_Swxword
1391   get_r_addend() const
1392   { return Convert<size, big_endian>::convert_host(this->p_->r_addend); }
1393
1394  private:
1395   const internal::Rela_data<size>* p_;
1396 };
1397
1398 // Writer class for an ELF Rela relocation.
1399
1400 template<int size, bool big_endian>
1401 class Rela_write
1402 {
1403  public:
1404   Rela_write(unsigned char* p)
1405     : p_(reinterpret_cast<internal::Rela_data<size>*>(p))
1406   { }
1407
1408   void
1409   put_r_offset(typename Elf_types<size>::Elf_Addr v)
1410   { this->p_->r_offset = Convert<size, big_endian>::convert_host(v); }
1411
1412   void
1413   put_r_info(typename Elf_types<size>::Elf_WXword v)
1414   { this->p_->r_info = Convert<size, big_endian>::convert_host(v); }
1415
1416   void
1417   put_r_addend(typename Elf_types<size>::Elf_Swxword v)
1418   { this->p_->r_addend = Convert<size, big_endian>::convert_host(v); }
1419
1420  private:
1421   internal::Rela_data<size>* p_;
1422 };
1423
1424 // Accessor classes for entries in the ELF SHT_DYNAMIC section aka
1425 // PT_DYNAMIC segment.
1426
1427 template<int size, bool big_endian>
1428 class Dyn
1429 {
1430  public:
1431   Dyn(const unsigned char* p)
1432     : p_(reinterpret_cast<const internal::Dyn_data<size>*>(p))
1433   { }
1434
1435   template<typename File>
1436   Dyn(File* file, typename File::Location loc)
1437     : p_(reinterpret_cast<const internal::Dyn_data<size>*>(
1438            file->view(loc.file_offset, loc.data_size).data()))
1439   { }
1440
1441   typename Elf_types<size>::Elf_Swxword
1442   get_d_tag() const
1443   { return Convert<size, big_endian>::convert_host(this->p_->d_tag); }
1444
1445   typename Elf_types<size>::Elf_WXword
1446   get_d_val() const
1447   { return Convert<size, big_endian>::convert_host(this->p_->d_val); }
1448
1449   typename Elf_types<size>::Elf_Addr
1450   get_d_ptr() const
1451   { return Convert<size, big_endian>::convert_host(this->p_->d_val); }
1452
1453  private:
1454   const internal::Dyn_data<size>* p_;
1455 };
1456
1457 // Write class for an entry in the SHT_DYNAMIC section.
1458
1459 template<int size, bool big_endian>
1460 class Dyn_write
1461 {
1462  public:
1463   Dyn_write(unsigned char* p)
1464     : p_(reinterpret_cast<internal::Dyn_data<size>*>(p))
1465   { }
1466
1467   void
1468   put_d_tag(typename Elf_types<size>::Elf_Swxword v)
1469   { this->p_->d_tag = Convert<size, big_endian>::convert_host(v); }
1470
1471   void
1472   put_d_val(typename Elf_types<size>::Elf_WXword v)
1473   { this->p_->d_val = Convert<size, big_endian>::convert_host(v); }
1474
1475   void
1476   put_d_ptr(typename Elf_types<size>::Elf_Addr v)
1477   { this->p_->d_val = Convert<size, big_endian>::convert_host(v); }
1478
1479  private:
1480   internal::Dyn_data<size>* p_;
1481 };
1482
1483 // Accessor classes for entries in the ELF SHT_GNU_verdef section.
1484
1485 template<int size, bool big_endian>
1486 class Verdef
1487 {
1488  public:
1489   Verdef(const unsigned char* p)
1490     : p_(reinterpret_cast<const internal::Verdef_data*>(p))
1491   { }
1492
1493   template<typename File>
1494   Verdef(File* file, typename File::Location loc)
1495     : p_(reinterpret_cast<const internal::Verdef_data*>(
1496            file->view(loc.file_offset, loc.data_size).data()))
1497   { }
1498
1499   Elf_Half
1500   get_vd_version() const
1501   { return Convert<16, big_endian>::convert_host(this->p_->vd_version); }
1502
1503   Elf_Half
1504   get_vd_flags() const
1505   { return Convert<16, big_endian>::convert_host(this->p_->vd_flags); }
1506
1507   Elf_Half
1508   get_vd_ndx() const
1509   { return Convert<16, big_endian>::convert_host(this->p_->vd_ndx); }
1510
1511   Elf_Half
1512   get_vd_cnt() const
1513   { return Convert<16, big_endian>::convert_host(this->p_->vd_cnt); }
1514
1515   Elf_Word
1516   get_vd_hash() const
1517   { return Convert<32, big_endian>::convert_host(this->p_->vd_hash); }
1518
1519   Elf_Word
1520   get_vd_aux() const
1521   { return Convert<32, big_endian>::convert_host(this->p_->vd_aux); }
1522
1523   Elf_Word
1524   get_vd_next() const
1525   { return Convert<32, big_endian>::convert_host(this->p_->vd_next); }
1526
1527  private:
1528   const internal::Verdef_data* p_;
1529 };
1530
1531 template<int size, bool big_endian>
1532 class Verdef_write
1533 {
1534  public:
1535   Verdef_write(unsigned char* p)
1536     : p_(reinterpret_cast<internal::Verdef_data*>(p))
1537   { }
1538
1539   void
1540   set_vd_version(Elf_Half v)
1541   { this->p_->vd_version = Convert<16, big_endian>::convert_host(v); }
1542
1543   void
1544   set_vd_flags(Elf_Half v)
1545   { this->p_->vd_flags = Convert<16, big_endian>::convert_host(v); }
1546
1547   void
1548   set_vd_ndx(Elf_Half v)
1549   { this->p_->vd_ndx = Convert<16, big_endian>::convert_host(v); }
1550
1551   void
1552   set_vd_cnt(Elf_Half v)
1553   { this->p_->vd_cnt = Convert<16, big_endian>::convert_host(v); }
1554
1555   void
1556   set_vd_hash(Elf_Word v)
1557   { this->p_->vd_hash = Convert<32, big_endian>::convert_host(v); }
1558
1559   void
1560   set_vd_aux(Elf_Word v)
1561   { this->p_->vd_aux = Convert<32, big_endian>::convert_host(v); }
1562
1563   void
1564   set_vd_next(Elf_Word v)
1565   { this->p_->vd_next = Convert<32, big_endian>::convert_host(v); }
1566
1567  private:
1568   internal::Verdef_data* p_;
1569 };
1570
1571 // Accessor classes for auxiliary entries in the ELF SHT_GNU_verdef
1572 // section.
1573
1574 template<int size, bool big_endian>
1575 class Verdaux
1576 {
1577  public:
1578   Verdaux(const unsigned char* p)
1579     : p_(reinterpret_cast<const internal::Verdaux_data*>(p))
1580   { }
1581
1582   template<typename File>
1583   Verdaux(File* file, typename File::Location loc)
1584     : p_(reinterpret_cast<const internal::Verdaux_data*>(
1585            file->view(loc.file_offset, loc.data_size).data()))
1586   { }
1587
1588   Elf_Word
1589   get_vda_name() const
1590   { return Convert<32, big_endian>::convert_host(this->p_->vda_name); }
1591
1592   Elf_Word
1593   get_vda_next() const
1594   { return Convert<32, big_endian>::convert_host(this->p_->vda_next); }
1595
1596  private:
1597   const internal::Verdaux_data* p_;
1598 };
1599
1600 template<int size, bool big_endian>
1601 class Verdaux_write
1602 {
1603  public:
1604   Verdaux_write(unsigned char* p)
1605     : p_(reinterpret_cast<internal::Verdaux_data*>(p))
1606   { }
1607
1608   void
1609   set_vda_name(Elf_Word v)
1610   { this->p_->vda_name = Convert<32, big_endian>::convert_host(v); }
1611
1612   void
1613   set_vda_next(Elf_Word v)
1614   { this->p_->vda_next = Convert<32, big_endian>::convert_host(v); }
1615
1616  private:
1617   internal::Verdaux_data* p_;
1618 };
1619
1620 // Accessor classes for entries in the ELF SHT_GNU_verneed section.
1621
1622 template<int size, bool big_endian>
1623 class Verneed
1624 {
1625  public:
1626   Verneed(const unsigned char* p)
1627     : p_(reinterpret_cast<const internal::Verneed_data*>(p))
1628   { }
1629
1630   template<typename File>
1631   Verneed(File* file, typename File::Location loc)
1632     : p_(reinterpret_cast<const internal::Verneed_data*>(
1633            file->view(loc.file_offset, loc.data_size).data()))
1634   { }
1635
1636   Elf_Half
1637   get_vn_version() const
1638   { return Convert<16, big_endian>::convert_host(this->p_->vn_version); }
1639
1640   Elf_Half
1641   get_vn_cnt() const
1642   { return Convert<16, big_endian>::convert_host(this->p_->vn_cnt); }
1643
1644   Elf_Word
1645   get_vn_file() const
1646   { return Convert<32, big_endian>::convert_host(this->p_->vn_file); }
1647
1648   Elf_Word
1649   get_vn_aux() const
1650   { return Convert<32, big_endian>::convert_host(this->p_->vn_aux); }
1651
1652   Elf_Word
1653   get_vn_next() const
1654   { return Convert<32, big_endian>::convert_host(this->p_->vn_next); }
1655
1656  private:
1657   const internal::Verneed_data* p_;
1658 };
1659
1660 template<int size, bool big_endian>
1661 class Verneed_write
1662 {
1663  public:
1664   Verneed_write(unsigned char* p)
1665     : p_(reinterpret_cast<internal::Verneed_data*>(p))
1666   { }
1667
1668   void
1669   set_vn_version(Elf_Half v)
1670   { this->p_->vn_version = Convert<16, big_endian>::convert_host(v); }
1671
1672   void
1673   set_vn_cnt(Elf_Half v)
1674   { this->p_->vn_cnt = Convert<16, big_endian>::convert_host(v); }
1675
1676   void
1677   set_vn_file(Elf_Word v)
1678   { this->p_->vn_file = Convert<32, big_endian>::convert_host(v); }
1679
1680   void
1681   set_vn_aux(Elf_Word v)
1682   { this->p_->vn_aux = Convert<32, big_endian>::convert_host(v); }
1683
1684   void
1685   set_vn_next(Elf_Word v)
1686   { this->p_->vn_next = Convert<32, big_endian>::convert_host(v); }
1687
1688  private:
1689   internal::Verneed_data* p_;
1690 };
1691
1692 // Accessor classes for auxiliary entries in the ELF SHT_GNU_verneed
1693 // section.
1694
1695 template<int size, bool big_endian>
1696 class Vernaux
1697 {
1698  public:
1699   Vernaux(const unsigned char* p)
1700     : p_(reinterpret_cast<const internal::Vernaux_data*>(p))
1701   { }
1702
1703   template<typename File>
1704   Vernaux(File* file, typename File::Location loc)
1705     : p_(reinterpret_cast<const internal::Vernaux_data*>(
1706            file->view(loc.file_offset, loc.data_size).data()))
1707   { }
1708
1709   Elf_Word
1710   get_vna_hash() const
1711   { return Convert<32, big_endian>::convert_host(this->p_->vna_hash); }
1712
1713   Elf_Half
1714   get_vna_flags() const
1715   { return Convert<16, big_endian>::convert_host(this->p_->vna_flags); }
1716
1717   Elf_Half
1718   get_vna_other() const
1719   { return Convert<16, big_endian>::convert_host(this->p_->vna_other); }
1720
1721   Elf_Word
1722   get_vna_name() const
1723   { return Convert<32, big_endian>::convert_host(this->p_->vna_name); }
1724
1725   Elf_Word
1726   get_vna_next() const
1727   { return Convert<32, big_endian>::convert_host(this->p_->vna_next); }
1728
1729  private:
1730   const internal::Vernaux_data* p_;
1731 };
1732
1733 template<int size, bool big_endian>
1734 class Vernaux_write
1735 {
1736  public:
1737   Vernaux_write(unsigned char* p)
1738     : p_(reinterpret_cast<internal::Vernaux_data*>(p))
1739   { }
1740
1741   void
1742   set_vna_hash(Elf_Word v)
1743   { this->p_->vna_hash = Convert<32, big_endian>::convert_host(v); }
1744
1745   void
1746   set_vna_flags(Elf_Half v)
1747   { this->p_->vna_flags = Convert<16, big_endian>::convert_host(v); }
1748
1749   void
1750   set_vna_other(Elf_Half v)
1751   { this->p_->vna_other = Convert<16, big_endian>::convert_host(v); }
1752
1753   void
1754   set_vna_name(Elf_Word v)
1755   { this->p_->vna_name = Convert<32, big_endian>::convert_host(v); }
1756
1757   void
1758   set_vna_next(Elf_Word v)
1759   { this->p_->vna_next = Convert<32, big_endian>::convert_host(v); }
1760
1761  private:
1762   internal::Vernaux_data* p_;
1763 };
1764
1765 } // End namespace elfcpp.
1766
1767 #endif // !defined(ELFPCP_H)