elfcpp/elfcpp.h

   1 // elfcpp.h -- main header file for elfcpp    -*- C++ -*-
   2
   3 // Copyright (C) 2006-2018 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_GNU = 3,
 133   // ELFOSABI_LINUX is an alias for ELFOSABI_GNU.
 134   ELFOSABI_LINUX = 3,
 135   ELFOSABI_SOLARIS = 6,
 136   ELFOSABI_AIX = 7,
 137   ELFOSABI_IRIX = 8,
 138   ELFOSABI_FREEBSD = 9,
 139   ELFOSABI_TRU64 = 10,
 140   ELFOSABI_MODESTO = 11,
 141   ELFOSABI_OPENBSD = 12,
 142   ELFOSABI_OPENVMS = 13,
 143   ELFOSABI_NSK = 14,
 144   ELFOSABI_AROS = 15,
 145   // A GNU extension for the ARM.
 146   ELFOSABI_ARM = 97,
 147   // A GNU extension for the MSP.
 148   ELFOSABI_STANDALONE = 255
 149 };
 150
 151 // The valid values found in the Ehdr e_type field.
 152
 153 enum ET
 154 {
 155   ET_NONE = 0,
 156   ET_REL = 1,
 157   ET_EXEC = 2,
 158   ET_DYN = 3,
 159   ET_CORE = 4,
 160   ET_LOOS = 0xfe00,
 161   ET_HIOS = 0xfeff,
 162   ET_LOPROC = 0xff00,
 163   ET_HIPROC = 0xffff
 164 };
 165
 166 // The valid values found in the Ehdr e_machine field.
 167
 168 enum EM
 169 {
 170   EM_NONE = 0,
 171   EM_M32 = 1,
 172   EM_SPARC = 2,
 173   EM_386 = 3,
 174   EM_68K = 4,
 175   EM_88K = 5,
 176   EM_IAMCU = 6,
 177   EM_860 = 7,
 178   EM_MIPS = 8,
 179   EM_S370 = 9,
 180   EM_MIPS_RS3_LE = 10,
 181   // 11 was the old Sparc V9 ABI.
 182   // 12 through 14 are reserved.
 183   EM_PARISC = 15,
 184   // 16 is reserved.
 185   // Some old PowerPC object files use 17.
 186   EM_VPP500 = 17,
 187   EM_SPARC32PLUS = 18,
 188   EM_960 = 19,
 189   EM_PPC = 20,
 190   EM_PPC64 = 21,
 191   EM_S390 = 22,
 192   // 23 through 35 are served.
 193   EM_V800 = 36,
 194   EM_FR20 = 37,
 195   EM_RH32 = 38,
 196   EM_RCE = 39,
 197   EM_ARM = 40,
 198   EM_ALPHA = 41,
 199   EM_SH = 42,
 200   EM_SPARCV9 = 43,
 201   EM_TRICORE = 44,
 202   EM_ARC = 45,
 203   EM_H8_300 = 46,
 204   EM_H8_300H = 47,
 205   EM_H8S = 48,
 206   EM_H8_500 = 49,
 207   EM_IA_64 = 50,
 208   EM_MIPS_X = 51,
 209   EM_COLDFIRE = 52,
 210   EM_68HC12 = 53,
 211   EM_MMA = 54,
 212   EM_PCP = 55,
 213   EM_NCPU = 56,
 214   EM_NDR1 = 57,
 215   EM_STARCORE = 58,
 216   EM_ME16 = 59,
 217   EM_ST100 = 60,
 218   EM_TINYJ = 61,
 219   EM_X86_64 = 62,
 220   EM_PDSP = 63,
 221   EM_PDP10 = 64,
 222   EM_PDP11 = 65,
 223   EM_FX66 = 66,
 224   EM_ST9PLUS = 67,
 225   EM_ST7 = 68,
 226   EM_68HC16 = 69,
 227   EM_68HC11 = 70,
 228   EM_68HC08 = 71,
 229   EM_68HC05 = 72,
 230   EM_SVX = 73,
 231   EM_ST19 = 74,
 232   EM_VAX = 75,
 233   EM_CRIS = 76,
 234   EM_JAVELIN = 77,
 235   EM_FIREPATH = 78,
 236   EM_ZSP = 79,
 237   EM_MMIX = 80,
 238   EM_HUANY = 81,
 239   EM_PRISM = 82,
 240   EM_AVR = 83,
 241   EM_FR30 = 84,
 242   EM_D10V = 85,
 243   EM_D30V = 86,
 244   EM_V850 = 87,
 245   EM_M32R = 88,
 246   EM_MN10300 = 89,
 247   EM_MN10200 = 90,
 248   EM_PJ = 91,
 249   EM_OR1K = 92,
 250   EM_ARC_A5 = 93,
 251   EM_XTENSA = 94,
 252   EM_VIDEOCORE = 95,
 253   EM_TMM_GPP = 96,
 254   EM_NS32K = 97,
 255   EM_TPC = 98,
 256   // Some old picoJava object files use 99 (EM_PJ is correct).
 257   EM_SNP1K = 99,
 258   EM_ST200 = 100,
 259   EM_IP2K = 101,
 260   EM_MAX = 102,
 261   EM_CR = 103,
 262   EM_F2MC16 = 104,
 263   EM_MSP430 = 105,
 264   EM_BLACKFIN = 106,
 265   EM_SE_C33 = 107,
 266   EM_SEP = 108,
 267   EM_ARCA = 109,
 268   EM_UNICORE = 110,
 269   EM_ALTERA_NIOS2 = 113,
 270   EM_CRX = 114,
 271   EM_TI_PRU = 144,
 272   EM_AARCH64 = 183,
 273   EM_TILEGX = 191,
 274   // The Morph MT.
 275   EM_MT = 0x2530,
 276   // DLX.
 277   EM_DLX = 0x5aa5,
 278   // FRV.
 279   EM_FRV = 0x5441,
 280   // Infineon Technologies 16-bit microcontroller with C166-V2 core.
 281   EM_X16X = 0x4688,
 282   // Xstorym16
 283   EM_XSTORMY16 = 0xad45,
 284   // Renesas M32C
 285   EM_M32C = 0xfeb0,
 286   // Vitesse IQ2000
 287   EM_IQ2000 = 0xfeba,
 288   // NIOS
 289   EM_NIOS32 = 0xfebb
 290   // Old AVR objects used 0x1057 (EM_AVR is correct).
 291   // Old MSP430 objects used 0x1059 (EM_MSP430 is correct).
 292   // Old FR30 objects used 0x3330 (EM_FR30 is correct).
 293   // Old OpenRISC objects used 0x3426 and 0x8472 (EM_OR1K is correct).
 294   // Old D10V objects used 0x7650 (EM_D10V is correct).
 295   // Old D30V objects used 0x7676 (EM_D30V is correct).
 296   // Old IP2X objects used 0x8217 (EM_IP2K is correct).
 297   // Old PowerPC objects used 0x9025 (EM_PPC is correct).
 298   // Old Alpha objects used 0x9026 (EM_ALPHA is correct).
 299   // Old M32R objects used 0x9041 (EM_M32R is correct).
 300   // Old V850 objects used 0x9080 (EM_V850 is correct).
 301   // Old S/390 objects used 0xa390 (EM_S390 is correct).
 302   // Old Xtensa objects used 0xabc7 (EM_XTENSA is correct).
 303   // Old MN10300 objects used 0xbeef (EM_MN10300 is correct).
 304   // Old MN10200 objects used 0xdead (EM_MN10200 is correct).
 305 };
 306
 307 // A special value found in the Ehdr e_phnum field.
 308
 309 enum
 310 {
 311   // Number of program segments stored in sh_info field of first
 312   // section headre.
 313   PN_XNUM = 0xffff
 314 };
 315
 316 // Special section indices.
 317
 318 enum
 319 {
 320   SHN_UNDEF = 0,
 321   SHN_LORESERVE = 0xff00,
 322   SHN_LOPROC = 0xff00,
 323   SHN_HIPROC = 0xff1f,
 324   SHN_LOOS = 0xff20,
 325   SHN_HIOS = 0xff3f,
 326   SHN_ABS = 0xfff1,
 327   SHN_COMMON = 0xfff2,
 328   SHN_XINDEX = 0xffff,
 329   SHN_HIRESERVE = 0xffff,
 330
 331   // Provide for initial and final section ordering in conjunction
 332   // with the SHF_LINK_ORDER and SHF_ORDERED section flags.
 333   SHN_BEFORE = 0xff00,
 334   SHN_AFTER = 0xff01,
 335
 336   // x86_64 specific large common symbol.
 337   SHN_X86_64_LCOMMON = 0xff02
 338 };
 339
 340 // The valid values found in the Shdr sh_type field.
 341
 342 enum SHT
 343 {
 344   SHT_NULL = 0,
 345   SHT_PROGBITS = 1,
 346   SHT_SYMTAB = 2,
 347   SHT_STRTAB = 3,
 348   SHT_RELA = 4,
 349   SHT_HASH = 5,
 350   SHT_DYNAMIC = 6,
 351   SHT_NOTE = 7,
 352   SHT_NOBITS = 8,
 353   SHT_REL = 9,
 354   SHT_SHLIB = 10,
 355   SHT_DYNSYM = 11,
 356   SHT_INIT_ARRAY = 14,
 357   SHT_FINI_ARRAY = 15,
 358   SHT_PREINIT_ARRAY = 16,
 359   SHT_GROUP = 17,
 360   SHT_SYMTAB_SHNDX = 18,
 361   SHT_LOOS = 0x60000000,
 362   SHT_HIOS = 0x6fffffff,
 363   SHT_LOPROC = 0x70000000,
 364   SHT_HIPROC = 0x7fffffff,
 365   SHT_LOUSER = 0x80000000,
 366   SHT_HIUSER = 0xffffffff,
 367   // The remaining values are not in the standard.
 368   // Incremental build data.
 369   SHT_GNU_INCREMENTAL_INPUTS = 0x6fff4700,
 370   SHT_GNU_INCREMENTAL_SYMTAB = 0x6fff4701,
 371   SHT_GNU_INCREMENTAL_RELOCS = 0x6fff4702,
 372   SHT_GNU_INCREMENTAL_GOT_PLT = 0x6fff4703,
 373   // Object attributes.
 374   SHT_GNU_ATTRIBUTES = 0x6ffffff5,
 375   // GNU style dynamic hash table.
 376   SHT_GNU_HASH = 0x6ffffff6,
 377   // List of prelink dependencies.
 378   SHT_GNU_LIBLIST = 0x6ffffff7,
 379   // Versions defined by file.
 380   SHT_SUNW_verdef = 0x6ffffffd,
 381   SHT_GNU_verdef = 0x6ffffffd,
 382   // Versions needed by file.
 383   SHT_SUNW_verneed = 0x6ffffffe,
 384   SHT_GNU_verneed = 0x6ffffffe,
 385   // Symbol versions,
 386   SHT_SUNW_versym = 0x6fffffff,
 387   SHT_GNU_versym = 0x6fffffff,
 388
 389   SHT_SPARC_GOTDATA = 0x70000000,
 390
 391   // ARM-specific section types.
 392   // Exception Index table.
 393   SHT_ARM_EXIDX = 0x70000001,
 394   // BPABI DLL dynamic linking pre-emption map.
 395   SHT_ARM_PREEMPTMAP = 0x70000002,
 396   // Object file compatibility attributes.
 397   SHT_ARM_ATTRIBUTES = 0x70000003,
 398   // Support for debugging overlaid programs.
 399   SHT_ARM_DEBUGOVERLAY = 0x70000004,
 400   SHT_ARM_OVERLAYSECTION = 0x70000005,
 401
 402   // x86_64 unwind information.
 403   SHT_X86_64_UNWIND = 0x70000001,
 404
 405   // MIPS-specific section types.
 406   // Section contains register usage information.
 407   SHT_MIPS_REGINFO = 0x70000006,
 408   // Section contains miscellaneous options.
 409   SHT_MIPS_OPTIONS = 0x7000000d,
 410   // ABI related flags section.
 411   SHT_MIPS_ABIFLAGS = 0x7000002a,
 412
 413   // AARCH64-specific section type.
 414   SHT_AARCH64_ATTRIBUTES = 0x70000003,
 415
 416   // Link editor is to sort the entries in this section based on the
 417   // address specified in the associated symbol table entry.
 418   SHT_ORDERED = 0x7fffffff
 419 };
 420
 421 // The valid bit flags found in the Shdr sh_flags field.
 422
 423 enum SHF
 424 {
 425   SHF_WRITE = 0x1,
 426   SHF_ALLOC = 0x2,
 427   SHF_EXECINSTR = 0x4,
 428   SHF_MERGE = 0x10,
 429   SHF_STRINGS = 0x20,
 430   SHF_INFO_LINK = 0x40,
 431   SHF_LINK_ORDER = 0x80,
 432   SHF_OS_NONCONFORMING = 0x100,
 433   SHF_GROUP = 0x200,
 434   SHF_TLS = 0x400,
 435   SHF_COMPRESSED = 0x800,
 436   SHF_MASKOS = 0x0ff00000,
 437   SHF_MASKPROC = 0xf0000000,
 438
 439   // Indicates this section requires ordering in relation to
 440   // other sections of the same type.  Ordered sections are
 441   // combined within the section pointed to by the sh_link entry.
 442   // The sh_info values SHN_BEFORE and SHN_AFTER imply that the
 443   // sorted section is to precede or follow, respectively, all
 444   // other sections in the set being ordered.
 445   SHF_ORDERED = 0x40000000,
 446   // This section is excluded from input to the link-edit of an
 447   // executable or shared object.  This flag is ignored if SHF_ALLOC
 448   // is also set, or if relocations exist against the section.
 449   SHF_EXCLUDE = 0x80000000,
 450
 451   // Section with data that is GP relative addressable.
 452   SHF_MIPS_GPREL = 0x10000000,
 453
 454   // x86_64 specific large section.
 455   SHF_X86_64_LARGE = 0x10000000
 456 };
 457
 458 // Values which appear in the first Elf_WXword of the section data
 459 // of a SHF_COMPRESSED section.
 460 enum
 461 {
 462   ELFCOMPRESS_ZLIB = 1,
 463   ELFCOMPRESS_LOOS = 0x60000000,
 464   ELFCOMPRESS_HIOS = 0x6fffffff,
 465   ELFCOMPRESS_LOPROC = 0x70000000,
 466   ELFCOMPRESS_HIPROC = 0x7fffffff,
 467 };
 468
 469 // Bit flags which appear in the first 32-bit word of the section data
 470 // of a SHT_GROUP section.
 471
 472 enum
 473 {
 474   GRP_COMDAT = 0x1,
 475   GRP_MASKOS = 0x0ff00000,
 476   GRP_MASKPROC = 0xf0000000
 477 };
 478
 479 // The valid values found in the Phdr p_type field.
 480
 481 enum PT
 482 {
 483   PT_NULL = 0,
 484   PT_LOAD = 1,
 485   PT_DYNAMIC = 2,
 486   PT_INTERP = 3,
 487   PT_NOTE = 4,
 488   PT_SHLIB = 5,
 489   PT_PHDR = 6,
 490   PT_TLS = 7,
 491   PT_LOOS = 0x60000000,
 492   PT_HIOS = 0x6fffffff,
 493   PT_LOPROC = 0x70000000,
 494   PT_HIPROC = 0x7fffffff,
 495   // The remaining values are not in the standard.
 496   // Frame unwind information.
 497   PT_GNU_EH_FRAME = 0x6474e550,
 498   PT_SUNW_EH_FRAME = 0x6474e550,
 499   // Stack flags.
 500   PT_GNU_STACK = 0x6474e551,
 501   // Read only after relocation.
 502   PT_GNU_RELRO = 0x6474e552,
 503   // Platform architecture compatibility information
 504   PT_ARM_ARCHEXT = 0x70000000,
 505   // Exception unwind tables
 506   PT_ARM_EXIDX = 0x70000001,
 507   // Register usage information.  Identifies one .reginfo section.
 508   PT_MIPS_REGINFO =0x70000000,
 509   // Runtime procedure table.
 510   PT_MIPS_RTPROC = 0x70000001,
 511   // .MIPS.options section.
 512   PT_MIPS_OPTIONS = 0x70000002,
 513   // .MIPS.abiflags section.
 514   PT_MIPS_ABIFLAGS = 0x70000003,
 515   // Platform architecture compatibility information
 516   PT_AARCH64_ARCHEXT = 0x70000000,
 517   // Exception unwind tables
 518   PT_AARCH64_UNWIND = 0x70000001,
 519   // 4k page table size
 520   PT_S390_PGSTE = 0x70000000,
 521 };
 522
 523 // The valid bit flags found in the Phdr p_flags field.
 524
 525 enum PF
 526 {
 527   PF_X = 0x1,
 528   PF_W = 0x2,
 529   PF_R = 0x4,
 530   PF_MASKOS = 0x0ff00000,
 531   PF_MASKPROC = 0xf0000000
 532 };
 533
 534 // Symbol binding from Sym st_info field.
 535
 536 enum STB
 537 {
 538   STB_LOCAL = 0,
 539   STB_GLOBAL = 1,
 540   STB_WEAK = 2,
 541   STB_LOOS = 10,
 542   STB_GNU_UNIQUE = 10,
 543   STB_HIOS = 12,
 544   STB_LOPROC = 13,
 545   STB_HIPROC = 15
 546 };
 547
 548 // Symbol types from Sym st_info field.
 549
 550 enum STT
 551 {
 552   STT_NOTYPE = 0,
 553   STT_OBJECT = 1,
 554   STT_FUNC = 2,
 555   STT_SECTION = 3,
 556   STT_FILE = 4,
 557   STT_COMMON = 5,
 558   STT_TLS = 6,
 559
 560   // GNU extension: symbol value points to a function which is called
 561   // at runtime to determine the final value of the symbol.
 562   STT_GNU_IFUNC = 10,
 563
 564   STT_LOOS = 10,
 565   STT_HIOS = 12,
 566   STT_LOPROC = 13,
 567   STT_HIPROC = 15,
 568
 569   // The section type that must be used for register symbols on
 570   // Sparc.  These symbols initialize a global register.
 571   STT_SPARC_REGISTER = 13,
 572
 573   // ARM: a THUMB function.  This is not defined in ARM ELF Specification but
 574   // used by the GNU tool-chain.
 575   STT_ARM_TFUNC = 13
 576 };
 577
 578 inline STB
 579 elf_st_bind(unsigned char info)
 580 {
 581   return static_cast<STB>(info >> 4);
 582 }
 583
 584 inline STT
 585 elf_st_type(unsigned char info)
 586 {
 587   return static_cast<STT>(info & 0xf);
 588 }
 589
 590 inline unsigned char
 591 elf_st_info(STB bind, STT type)
 592 {
 593   return ((static_cast<unsigned char>(bind) << 4)
 594           + (static_cast<unsigned char>(type) & 0xf));
 595 }
 596
 597 // Symbol visibility from Sym st_other field.
 598
 599 enum STV
 600 {
 601   STV_DEFAULT = 0,
 602   STV_INTERNAL = 1,
 603   STV_HIDDEN = 2,
 604   STV_PROTECTED = 3
 605 };
 606
 607 inline STV
 608 elf_st_visibility(unsigned char other)
 609 {
 610   return static_cast<STV>(other & 0x3);
 611 }
 612
 613 inline unsigned char
 614 elf_st_nonvis(unsigned char other)
 615 {
 616   return static_cast<STV>(other >> 2);
 617 }
 618
 619 inline unsigned char
 620 elf_st_other(STV vis, unsigned char nonvis)
 621 {
 622   return ((nonvis << 2)
 623           + (static_cast<unsigned char>(vis) & 3));
 624 }
 625
 626 // Reloc information from Rel/Rela r_info field.
 627
 628 template<int size>
 629 unsigned int
 630 elf_r_sym(typename Elf_types<size>::Elf_WXword);
 631
 632 template<>
 633 inline unsigned int
 634 elf_r_sym<32>(Elf_Word v)
 635 {
 636   return v >> 8;
 637 }
 638
 639 template<>
 640 inline unsigned int
 641 elf_r_sym<64>(Elf_Xword v)
 642 {
 643   return v >> 32;
 644 }
 645
 646 template<int size>
 647 unsigned int
 648 elf_r_type(typename Elf_types<size>::Elf_WXword);
 649
 650 template<>
 651 inline unsigned int
 652 elf_r_type<32>(Elf_Word v)
 653 {
 654   return v & 0xff;
 655 }
 656
 657 template<>
 658 inline unsigned int
 659 elf_r_type<64>(Elf_Xword v)
 660 {
 661   return v & 0xffffffff;
 662 }
 663
 664 template<int size>
 665 typename Elf_types<size>::Elf_WXword
 666 elf_r_info(unsigned int s, unsigned int t);
 667
 668 template<>
 669 inline Elf_Word
 670 elf_r_info<32>(unsigned int s, unsigned int t)
 671 {
 672   return (s << 8) + (t & 0xff);
 673 }
 674
 675 template<>
 676 inline Elf_Xword
 677 elf_r_info<64>(unsigned int s, unsigned int t)
 678 {
 679   return (static_cast<Elf_Xword>(s) << 32) + (t & 0xffffffff);
 680 }
 681
 682 // Dynamic tags found in the PT_DYNAMIC segment.
 683
 684 enum DT
 685 {
 686   DT_NULL = 0,
 687   DT_NEEDED = 1,
 688   DT_PLTRELSZ = 2,
 689   DT_PLTGOT = 3,
 690   DT_HASH = 4,
 691   DT_STRTAB = 5,
 692   DT_SYMTAB = 6,
 693   DT_RELA = 7,
 694   DT_RELASZ = 8,
 695   DT_RELAENT = 9,
 696   DT_STRSZ = 10,
 697   DT_SYMENT = 11,
 698   DT_INIT = 12,
 699   DT_FINI = 13,
 700   DT_SONAME = 14,
 701   DT_RPATH = 15,
 702   DT_SYMBOLIC = 16,
 703   DT_REL = 17,
 704   DT_RELSZ = 18,
 705   DT_RELENT = 19,
 706   DT_PLTREL = 20,
 707   DT_DEBUG = 21,
 708   DT_TEXTREL = 22,
 709   DT_JMPREL = 23,
 710   DT_BIND_NOW = 24,
 711   DT_INIT_ARRAY = 25,
 712   DT_FINI_ARRAY = 26,
 713   DT_INIT_ARRAYSZ = 27,
 714   DT_FINI_ARRAYSZ = 28,
 715   DT_RUNPATH = 29,
 716   DT_FLAGS = 30,
 717
 718   // This is used to mark a range of dynamic tags.  It is not really
 719   // a tag value.
 720   DT_ENCODING = 32,
 721
 722   DT_PREINIT_ARRAY = 32,
 723   DT_PREINIT_ARRAYSZ = 33,
 724   DT_LOOS = 0x6000000d,
 725   DT_HIOS = 0x6ffff000,
 726   DT_LOPROC = 0x70000000,
 727   DT_HIPROC = 0x7fffffff,
 728
 729   // The remaining values are extensions used by GNU or Solaris.
 730   DT_VALRNGLO = 0x6ffffd00,
 731   DT_GNU_PRELINKED = 0x6ffffdf5,
 732   DT_GNU_CONFLICTSZ = 0x6ffffdf6,
 733   DT_GNU_LIBLISTSZ = 0x6ffffdf7,
 734   DT_CHECKSUM = 0x6ffffdf8,
 735   DT_PLTPADSZ = 0x6ffffdf9,
 736   DT_MOVEENT = 0x6ffffdfa,
 737   DT_MOVESZ = 0x6ffffdfb,
 738   DT_FEATURE = 0x6ffffdfc,
 739   DT_POSFLAG_1 = 0x6ffffdfd,
 740   DT_SYMINSZ = 0x6ffffdfe,
 741   DT_SYMINENT = 0x6ffffdff,
 742   DT_VALRNGHI = 0x6ffffdff,
 743
 744   DT_ADDRRNGLO = 0x6ffffe00,
 745   DT_GNU_HASH = 0x6ffffef5,
 746   DT_TLSDESC_PLT = 0x6ffffef6,
 747   DT_TLSDESC_GOT = 0x6ffffef7,
 748   DT_GNU_CONFLICT = 0x6ffffef8,
 749   DT_GNU_LIBLIST = 0x6ffffef9,
 750   DT_CONFIG = 0x6ffffefa,
 751   DT_DEPAUDIT = 0x6ffffefb,
 752   DT_AUDIT = 0x6ffffefc,
 753   DT_PLTPAD = 0x6ffffefd,
 754   DT_MOVETAB = 0x6ffffefe,
 755   DT_SYMINFO = 0x6ffffeff,
 756   DT_ADDRRNGHI = 0x6ffffeff,
 757
 758   DT_RELACOUNT = 0x6ffffff9,
 759   DT_RELCOUNT = 0x6ffffffa,
 760   DT_FLAGS_1 = 0x6ffffffb,
 761   DT_VERDEF = 0x6ffffffc,
 762   DT_VERDEFNUM = 0x6ffffffd,
 763   DT_VERNEED = 0x6ffffffe,
 764   DT_VERNEEDNUM = 0x6fffffff,
 765
 766   DT_VERSYM = 0x6ffffff0,
 767
 768   // Specify the value of _GLOBAL_OFFSET_TABLE_.
 769   DT_PPC_GOT = 0x70000000,
 770
 771   // Specify whether various optimisations are possible.
 772   DT_PPC_OPT = 0x70000001,
 773
 774   // Specify the start of the .glink section.
 775   DT_PPC64_GLINK = 0x70000000,
 776
 777   // Specify the start and size of the .opd section.
 778   DT_PPC64_OPD = 0x70000001,
 779   DT_PPC64_OPDSZ = 0x70000002,
 780
 781   // Specify whether various optimisations are possible.
 782   DT_PPC64_OPT = 0x70000003,
 783
 784   // The index of an STT_SPARC_REGISTER symbol within the DT_SYMTAB
 785   // symbol table.  One dynamic entry exists for every STT_SPARC_REGISTER
 786   // symbol in the symbol table.
 787   DT_SPARC_REGISTER = 0x70000001,
 788
 789   // MIPS specific dynamic array tags.
 790   // 32 bit version number for runtime linker interface.
 791   DT_MIPS_RLD_VERSION = 0x70000001,
 792   // Time stamp.
 793   DT_MIPS_TIME_STAMP = 0x70000002,
 794   // Checksum of external strings and common sizes.
 795   DT_MIPS_ICHECKSUM = 0x70000003,
 796   // Index of version string in string table.
 797   DT_MIPS_IVERSION = 0x70000004,
 798   // 32 bits of flags.
 799   DT_MIPS_FLAGS = 0x70000005,
 800   // Base address of the segment.
 801   DT_MIPS_BASE_ADDRESS = 0x70000006,
 802   // ???
 803   DT_MIPS_MSYM = 0x70000007,
 804   // Address of .conflict section.
 805   DT_MIPS_CONFLICT = 0x70000008,
 806   // Address of .liblist section.
 807   DT_MIPS_LIBLIST = 0x70000009,
 808   // Number of local global offset table entries.
 809   DT_MIPS_LOCAL_GOTNO = 0x7000000a,
 810   // Number of entries in the .conflict section.
 811   DT_MIPS_CONFLICTNO = 0x7000000b,
 812   // Number of entries in the .liblist section.
 813   DT_MIPS_LIBLISTNO = 0x70000010,
 814   // Number of entries in the .dynsym section.
 815   DT_MIPS_SYMTABNO = 0x70000011,
 816   // Index of first external dynamic symbol not referenced locally.
 817   DT_MIPS_UNREFEXTNO = 0x70000012,
 818   // Index of first dynamic symbol in global offset table.
 819   DT_MIPS_GOTSYM = 0x70000013,
 820   // Number of page table entries in global offset table.
 821   DT_MIPS_HIPAGENO = 0x70000014,
 822   // Address of run time loader map, used for debugging.
 823   DT_MIPS_RLD_MAP = 0x70000016,
 824   // Delta C++ class definition.
 825   DT_MIPS_DELTA_CLASS = 0x70000017,
 826   // Number of entries in DT_MIPS_DELTA_CLASS.
 827   DT_MIPS_DELTA_CLASS_NO = 0x70000018,
 828   // Delta C++ class instances.
 829   DT_MIPS_DELTA_INSTANCE = 0x70000019,
 830   // Number of entries in DT_MIPS_DELTA_INSTANCE.
 831   DT_MIPS_DELTA_INSTANCE_NO = 0x7000001a,
 832   // Delta relocations.
 833   DT_MIPS_DELTA_RELOC = 0x7000001b,
 834   // Number of entries in DT_MIPS_DELTA_RELOC.
 835   DT_MIPS_DELTA_RELOC_NO = 0x7000001c,
 836   // Delta symbols that Delta relocations refer to.
 837   DT_MIPS_DELTA_SYM = 0x7000001d,
 838   // Number of entries in DT_MIPS_DELTA_SYM.
 839   DT_MIPS_DELTA_SYM_NO = 0x7000001e,
 840   // Delta symbols that hold class declarations.
 841   DT_MIPS_DELTA_CLASSSYM = 0x70000020,
 842   // Number of entries in DT_MIPS_DELTA_CLASSSYM.
 843   DT_MIPS_DELTA_CLASSSYM_NO = 0x70000021,
 844   // Flags indicating information about C++ flavor.
 845   DT_MIPS_CXX_FLAGS = 0x70000022,
 846   // Pixie information (???).
 847   DT_MIPS_PIXIE_INIT = 0x70000023,
 848   // Address of .MIPS.symlib
 849   DT_MIPS_SYMBOL_LIB = 0x70000024,
 850   // The GOT index of the first PTE for a segment
 851   DT_MIPS_LOCALPAGE_GOTIDX = 0x70000025,
 852   // The GOT index of the first PTE for a local symbol
 853   DT_MIPS_LOCAL_GOTIDX = 0x70000026,
 854   // The GOT index of the first PTE for a hidden symbol
 855   DT_MIPS_HIDDEN_GOTIDX = 0x70000027,
 856   // The GOT index of the first PTE for a protected symbol
 857   DT_MIPS_PROTECTED_GOTIDX = 0x70000028,
 858   // Address of `.MIPS.options'.
 859   DT_MIPS_OPTIONS = 0x70000029,
 860   // Address of `.interface'.
 861   DT_MIPS_INTERFACE = 0x7000002a,
 862   // ???
 863   DT_MIPS_DYNSTR_ALIGN = 0x7000002b,
 864   // Size of the .interface section.
 865   DT_MIPS_INTERFACE_SIZE = 0x7000002c,
 866   // Size of rld_text_resolve function stored in the GOT.
 867   DT_MIPS_RLD_TEXT_RESOLVE_ADDR = 0x7000002d,
 868   // Default suffix of DSO to be added by rld on dlopen() calls.
 869   DT_MIPS_PERF_SUFFIX = 0x7000002e,
 870   // Size of compact relocation section (O32).
 871   DT_MIPS_COMPACT_SIZE = 0x7000002f,
 872   // GP value for auxiliary GOTs.
 873   DT_MIPS_GP_VALUE = 0x70000030,
 874   // Address of auxiliary .dynamic.
 875   DT_MIPS_AUX_DYNAMIC = 0x70000031,
 876   // Address of the base of the PLTGOT.
 877   DT_MIPS_PLTGOT = 0x70000032,
 878   // Points to the base of a writable PLT.
 879   DT_MIPS_RWPLT = 0x70000034,
 880   // Relative offset of run time loader map, used for debugging.
 881   DT_MIPS_RLD_MAP_REL = 0x70000035,
 882
 883   DT_AUXILIARY = 0x7ffffffd,
 884   DT_USED = 0x7ffffffe,
 885   DT_FILTER = 0x7fffffff
 886 };
 887
 888 // Flags found in the DT_FLAGS dynamic element.
 889
 890 enum DF
 891 {
 892   DF_ORIGIN = 0x1,
 893   DF_SYMBOLIC = 0x2,
 894   DF_TEXTREL = 0x4,
 895   DF_BIND_NOW = 0x8,
 896   DF_STATIC_TLS = 0x10
 897 };
 898
 899 // Flags found in the DT_FLAGS_1 dynamic element.
 900
 901 enum DF_1
 902 {
 903   DF_1_NOW = 0x1,
 904   DF_1_GLOBAL = 0x2,
 905   DF_1_GROUP = 0x4,
 906   DF_1_NODELETE = 0x8,
 907   DF_1_LOADFLTR = 0x10,
 908   DF_1_INITFIRST = 0x20,
 909   DF_1_NOOPEN = 0x40,
 910   DF_1_ORIGIN = 0x80,
 911   DF_1_DIRECT = 0x100,
 912   DF_1_TRANS = 0x200,
 913   DF_1_INTERPOSE = 0x400,
 914   DF_1_NODEFLIB = 0x800,
 915   DF_1_NODUMP = 0x1000,
 916   DF_1_CONLFAT = 0x2000
 917 };
 918
 919 // Version numbers which appear in the vd_version field of a Verdef
 920 // structure.
 921
 922 const int VER_DEF_NONE = 0;
 923 const int VER_DEF_CURRENT = 1;
 924
 925 // Version numbers which appear in the vn_version field of a Verneed
 926 // structure.
 927
 928 const int VER_NEED_NONE = 0;
 929 const int VER_NEED_CURRENT = 1;
 930
 931 // Bit flags which appear in vd_flags of Verdef and vna_flags of
 932 // Vernaux.
 933
 934 const int VER_FLG_BASE = 0x1;
 935 const int VER_FLG_WEAK = 0x2;
 936 const int VER_FLG_INFO = 0x4;
 937
 938 // Special constants found in the SHT_GNU_versym entries.
 939
 940 const int VER_NDX_LOCAL = 0;
 941 const int VER_NDX_GLOBAL = 1;
 942
 943 // A SHT_GNU_versym section holds 16-bit words.  This bit is set if
 944 // the symbol is hidden and can only be seen when referenced using an
 945 // explicit version number.  This is a GNU extension.
 946
 947 const int VERSYM_HIDDEN = 0x8000;
 948
 949 // This is the mask for the rest of the data in a word read from a
 950 // SHT_GNU_versym section.
 951
 952 const int VERSYM_VERSION = 0x7fff;
 953
 954 // Note descriptor type codes for notes in a non-core file with an
 955 // empty name.
 956
 957 enum
 958 {
 959   // A version string.
 960   NT_VERSION = 1,
 961   // An architecture string.
 962   NT_ARCH = 2
 963 };
 964
 965 // Note descriptor type codes for notes in a non-core file with the
 966 // name "GNU".
 967
 968 enum
 969 {
 970   // The minimum ABI level.  This is used by the dynamic linker to
 971   // describe the minimal kernel version on which a shared library may
 972   // be used.  Th value should be four words.  Word 0 is an OS
 973   // descriptor (see below).  Word 1 is the major version of the ABI.
 974   // Word 2 is the minor version.  Word 3 is the subminor version.
 975   NT_GNU_ABI_TAG = 1,
 976   // Hardware capabilities information.  Word 0 is the number of
 977   // entries.  Word 1 is a bitmask of enabled entries.  The rest of
 978   // the descriptor is a series of entries, where each entry is a
 979   // single byte followed by a nul terminated string.  The byte gives
 980   // the bit number to test if enabled in the bitmask.
 981   NT_GNU_HWCAP = 2,
 982   // The build ID as set by the linker's --build-id option.  The
 983   // format of the descriptor depends on the build ID style.
 984   NT_GNU_BUILD_ID = 3,
 985   // The version of gold used to link.  Th descriptor is just a
 986   // string.
 987   NT_GNU_GOLD_VERSION = 4
 988 };
 989
 990 // The OS values which may appear in word 0 of a NT_GNU_ABI_TAG note.
 991
 992 enum
 993 {
 994   ELF_NOTE_OS_LINUX = 0,
 995   ELF_NOTE_OS_GNU = 1,
 996   ELF_NOTE_OS_SOLARIS2 = 2,
 997   ELF_NOTE_OS_FREEBSD = 3,
 998   ELF_NOTE_OS_NETBSD = 4,
 999   ELF_NOTE_OS_SYLLABLE = 5
1000 };
1001
1002 } // End namespace elfcpp.
1003
1004 // Include internal details after defining the types.
1005 #include "elfcpp_internal.h"
1006
1007 namespace elfcpp
1008 {
1009
1010 // The offset of the ELF file header in the ELF file.
1011
1012 const int file_header_offset = 0;
1013
1014 // ELF structure sizes.
1015
1016 template<int size>
1017 struct Elf_sizes
1018 {
1019   // Size of ELF file header.
1020   static const int ehdr_size = sizeof(internal::Ehdr_data<size>);
1021   // Size of ELF segment header.
1022   static const int phdr_size = sizeof(internal::Phdr_data<size>);
1023   // Size of ELF section header.
1024   static const int shdr_size = sizeof(internal::Shdr_data<size>);
1025   // Size of ELF compression header.
1026   static const int chdr_size = sizeof(internal::Chdr_data<size>);
1027   // Size of ELF symbol table entry.
1028   static const int sym_size = sizeof(internal::Sym_data<size>);
1029   // Sizes of ELF reloc entries.
1030   static const int rel_size = sizeof(internal::Rel_data<size>);
1031   static const int rela_size = sizeof(internal::Rela_data<size>);
1032   // Size of ELF dynamic entry.
1033   static const int dyn_size = sizeof(internal::Dyn_data<size>);
1034   // Size of ELF version structures.
1035   static const int verdef_size = sizeof(internal::Verdef_data);
1036   static const int verdaux_size = sizeof(internal::Verdaux_data);
1037   static const int verneed_size = sizeof(internal::Verneed_data);
1038   static const int vernaux_size = sizeof(internal::Vernaux_data);
1039 };
1040
1041 // Accessor class for the ELF file header.
1042
1043 template<int size, bool big_endian>
1044 class Ehdr
1045 {
1046  public:
1047   Ehdr(const unsigned char* p)
1048     : p_(reinterpret_cast<const internal::Ehdr_data<size>*>(p))
1049   { }
1050
1051   template<typename File>
1052   Ehdr(File* file, typename File::Location loc)
1053     : p_(reinterpret_cast<const internal::Ehdr_data<size>*>(
1054            file->view(loc.file_offset, loc.data_size).data()))
1055   { }
1056
1057   const unsigned char*
1058   get_e_ident() const
1059   { return this->p_->e_ident; }
1060
1061   Elf_Half
1062   get_e_type() const
1063   { return Convert<16, big_endian>::convert_host(this->p_->e_type); }
1064
1065   Elf_Half
1066   get_e_machine() const
1067   { return Convert<16, big_endian>::convert_host(this->p_->e_machine); }
1068
1069   Elf_Word
1070   get_e_version() const
1071   { return Convert<32, big_endian>::convert_host(this->p_->e_version); }
1072
1073   typename Elf_types<size>::Elf_Addr
1074   get_e_entry() const
1075   { return Convert<size, big_endian>::convert_host(this->p_->e_entry); }
1076
1077   typename Elf_types<size>::Elf_Off
1078   get_e_phoff() const
1079   { return Convert<size, big_endian>::convert_host(this->p_->e_phoff); }
1080
1081   typename Elf_types<size>::Elf_Off
1082   get_e_shoff() const
1083   { return Convert<size, big_endian>::convert_host(this->p_->e_shoff); }
1084
1085   Elf_Word
1086   get_e_flags() const
1087   { return Convert<32, big_endian>::convert_host(this->p_->e_flags); }
1088
1089   Elf_Half
1090   get_e_ehsize() const
1091   { return Convert<16, big_endian>::convert_host(this->p_->e_ehsize); }
1092
1093   Elf_Half
1094   get_e_phentsize() const
1095   { return Convert<16, big_endian>::convert_host(this->p_->e_phentsize); }
1096
1097   Elf_Half
1098   get_e_phnum() const
1099   { return Convert<16, big_endian>::convert_host(this->p_->e_phnum); }
1100
1101   Elf_Half
1102   get_e_shentsize() const
1103   { return Convert<16, big_endian>::convert_host(this->p_->e_shentsize); }
1104
1105   Elf_Half
1106   get_e_shnum() const
1107   { return Convert<16, big_endian>::convert_host(this->p_->e_shnum); }
1108
1109   Elf_Half
1110   get_e_shstrndx() const
1111   { return Convert<16, big_endian>::convert_host(this->p_->e_shstrndx); }
1112
1113  private:
1114   const internal::Ehdr_data<size>* p_;
1115 };
1116
1117 // Write class for the ELF file header.
1118
1119 template<int size, bool big_endian>
1120 class Ehdr_write
1121 {
1122  public:
1123   Ehdr_write(unsigned char* p)
1124     : p_(reinterpret_cast<internal::Ehdr_data<size>*>(p))
1125   { }
1126
1127   void
1128   put_e_ident(const unsigned char v[EI_NIDENT]) const
1129   { memcpy(this->p_->e_ident, v, EI_NIDENT); }
1130
1131   void
1132   put_e_type(Elf_Half v)
1133   { this->p_->e_type = Convert<16, big_endian>::convert_host(v); }
1134
1135   void
1136   put_e_machine(Elf_Half v)
1137   { this->p_->e_machine = Convert<16, big_endian>::convert_host(v); }
1138
1139   void
1140   put_e_version(Elf_Word v)
1141   { this->p_->e_version = Convert<32, big_endian>::convert_host(v); }
1142
1143   void
1144   put_e_entry(typename Elf_types<size>::Elf_Addr v)
1145   { this->p_->e_entry = Convert<size, big_endian>::convert_host(v); }
1146
1147   void
1148   put_e_phoff(typename Elf_types<size>::Elf_Off v)
1149   { this->p_->e_phoff = Convert<size, big_endian>::convert_host(v); }
1150
1151   void
1152   put_e_shoff(typename Elf_types<size>::Elf_Off v)
1153   { this->p_->e_shoff = Convert<size, big_endian>::convert_host(v); }
1154
1155   void
1156   put_e_flags(Elf_Word v)
1157   { this->p_->e_flags = Convert<32, big_endian>::convert_host(v); }
1158
1159   void
1160   put_e_ehsize(Elf_Half v)
1161   { this->p_->e_ehsize = Convert<16, big_endian>::convert_host(v); }
1162
1163   void
1164   put_e_phentsize(Elf_Half v)
1165   { this->p_->e_phentsize = Convert<16, big_endian>::convert_host(v); }
1166
1167   void
1168   put_e_phnum(Elf_Half v)
1169   { this->p_->e_phnum = Convert<16, big_endian>::convert_host(v); }
1170
1171   void
1172   put_e_shentsize(Elf_Half v)
1173   { this->p_->e_shentsize = Convert<16, big_endian>::convert_host(v); }
1174
1175   void
1176   put_e_shnum(Elf_Half v)
1177   { this->p_->e_shnum = Convert<16, big_endian>::convert_host(v); }
1178
1179   void
1180   put_e_shstrndx(Elf_Half v)
1181   { this->p_->e_shstrndx = Convert<16, big_endian>::convert_host(v); }
1182
1183  private:
1184   internal::Ehdr_data<size>* p_;
1185 };
1186
1187 // Accessor class for an ELF section header.
1188
1189 template<int size, bool big_endian>
1190 class Shdr
1191 {
1192  public:
1193   Shdr(const unsigned char* p)
1194     : p_(reinterpret_cast<const internal::Shdr_data<size>*>(p))
1195   { }
1196
1197   template<typename File>
1198   Shdr(File* file, typename File::Location loc)
1199     : p_(reinterpret_cast<const internal::Shdr_data<size>*>(
1200            file->view(loc.file_offset, loc.data_size).data()))
1201   { }
1202
1203   Elf_Word
1204   get_sh_name() const
1205   { return Convert<32, big_endian>::convert_host(this->p_->sh_name); }
1206
1207   Elf_Word
1208   get_sh_type() const
1209   { return Convert<32, big_endian>::convert_host(this->p_->sh_type); }
1210
1211   typename Elf_types<size>::Elf_WXword
1212   get_sh_flags() const
1213   { return Convert<size, big_endian>::convert_host(this->p_->sh_flags); }
1214
1215   typename Elf_types<size>::Elf_Addr
1216   get_sh_addr() const
1217   { return Convert<size, big_endian>::convert_host(this->p_->sh_addr); }
1218
1219   typename Elf_types<size>::Elf_Off
1220   get_sh_offset() const
1221   { return Convert<size, big_endian>::convert_host(this->p_->sh_offset); }
1222
1223   typename Elf_types<size>::Elf_WXword
1224   get_sh_size() const
1225   { return Convert<size, big_endian>::convert_host(this->p_->sh_size); }
1226
1227   Elf_Word
1228   get_sh_link() const
1229   { return Convert<32, big_endian>::convert_host(this->p_->sh_link); }
1230
1231   Elf_Word
1232   get_sh_info() const
1233   { return Convert<32, big_endian>::convert_host(this->p_->sh_info); }
1234
1235   typename Elf_types<size>::Elf_WXword
1236   get_sh_addralign() const
1237   { return
1238       Convert<size, big_endian>::convert_host(this->p_->sh_addralign); }
1239
1240   typename Elf_types<size>::Elf_WXword
1241   get_sh_entsize() const
1242   { return Convert<size, big_endian>::convert_host(this->p_->sh_entsize); }
1243
1244  private:
1245   const internal::Shdr_data<size>* p_;
1246 };
1247
1248 // Write class for an ELF section header.
1249
1250 template<int size, bool big_endian>
1251 class Shdr_write
1252 {
1253  public:
1254   Shdr_write(unsigned char* p)
1255     : p_(reinterpret_cast<internal::Shdr_data<size>*>(p))
1256   { }
1257
1258   void
1259   put_sh_name(Elf_Word v)
1260   { this->p_->sh_name = Convert<32, big_endian>::convert_host(v); }
1261
1262   void
1263   put_sh_type(Elf_Word v)
1264   { this->p_->sh_type = Convert<32, big_endian>::convert_host(v); }
1265
1266   void
1267   put_sh_flags(typename Elf_types<size>::Elf_WXword v)
1268   { this->p_->sh_flags = Convert<size, big_endian>::convert_host(v); }
1269
1270   void
1271   put_sh_addr(typename Elf_types<size>::Elf_Addr v)
1272   { this->p_->sh_addr = Convert<size, big_endian>::convert_host(v); }
1273
1274   void
1275   put_sh_offset(typename Elf_types<size>::Elf_Off v)
1276   { this->p_->sh_offset = Convert<size, big_endian>::convert_host(v); }
1277
1278   void
1279   put_sh_size(typename Elf_types<size>::Elf_WXword v)
1280   { this->p_->sh_size = Convert<size, big_endian>::convert_host(v); }
1281
1282   void
1283   put_sh_link(Elf_Word v)
1284   { this->p_->sh_link = Convert<32, big_endian>::convert_host(v); }
1285
1286   void
1287   put_sh_info(Elf_Word v)
1288   { this->p_->sh_info = Convert<32, big_endian>::convert_host(v); }
1289
1290   void
1291   put_sh_addralign(typename Elf_types<size>::Elf_WXword v)
1292   { this->p_->sh_addralign = Convert<size, big_endian>::convert_host(v); }
1293
1294   void
1295   put_sh_entsize(typename Elf_types<size>::Elf_WXword v)
1296   { this->p_->sh_entsize = Convert<size, big_endian>::convert_host(v); }
1297
1298  private:
1299   internal::Shdr_data<size>* p_;
1300 };
1301
1302 // Accessor class for an ELF compression header.
1303
1304 template<int size, bool big_endian>
1305 class Chdr
1306 {
1307  public:
1308   Chdr(const unsigned char* p)
1309     : p_(reinterpret_cast<const internal::Chdr_data<size>*>(p))
1310   { }
1311
1312   template<typename File>
1313   Chdr(File* file, typename File::Location loc)
1314     : p_(reinterpret_cast<const internal::Chdr_data<size>*>(
1315            file->view(loc.file_offset, loc.data_size).data()))
1316   { }
1317
1318   Elf_Word
1319   get_ch_type() const
1320   { return Convert<size, big_endian>::convert_host(this->p_->ch_type); }
1321
1322   typename Elf_types<size>::Elf_WXword
1323   get_ch_size() const
1324   { return Convert<size, big_endian>::convert_host(this->p_->ch_size); }
1325
1326   typename Elf_types<size>::Elf_WXword
1327   get_ch_addralign() const
1328   { return
1329       Convert<size, big_endian>::convert_host(this->p_->ch_addralign); }
1330
1331  private:
1332   const internal::Chdr_data<size>* p_;
1333 };
1334
1335 // Write class for an ELF compression header.
1336
1337 template<int size, bool big_endian>
1338 class Chdr_write
1339 {
1340  public:
1341   Chdr_write(unsigned char* p)
1342     : p_(reinterpret_cast<internal::Chdr_data<size>*>(p))
1343   { }
1344
1345   void
1346   put_ch_type(typename Elf_types<size>::Elf_WXword v)
1347   { this->p_->ch_type = Convert<size, big_endian>::convert_host(v); }
1348
1349   void
1350   put_ch_size(typename Elf_types<size>::Elf_WXword v)
1351   { this->p_->ch_size = Convert<size, big_endian>::convert_host(v); }
1352
1353   void
1354   put_ch_addralign(typename Elf_types<size>::Elf_WXword v)
1355   { this->p_->ch_addralign = Convert<size, big_endian>::convert_host(v); }
1356
1357   void
1358   put_ch_reserved(Elf_Word);
1359
1360  private:
1361   internal::Chdr_data<size>* p_;
1362 };
1363
1364 template<>
1365 inline void
1366 elfcpp::Chdr_write<64, true>::put_ch_reserved(Elf_Word v)
1367 {
1368   this->p_->ch_reserved = v;
1369 }
1370
1371 template<>
1372 inline void
1373 elfcpp::Chdr_write<64, false>::put_ch_reserved(Elf_Word v)
1374 {
1375   this->p_->ch_reserved = v;
1376 }
1377
1378 // Accessor class for an ELF segment header.
1379
1380 template<int size, bool big_endian>
1381 class Phdr
1382 {
1383  public:
1384   Phdr(const unsigned char* p)
1385     : p_(reinterpret_cast<const internal::Phdr_data<size>*>(p))
1386   { }
1387
1388   template<typename File>
1389   Phdr(File* file, typename File::Location loc)
1390     : p_(reinterpret_cast<internal::Phdr_data<size>*>(
1391            file->view(loc.file_offset, loc.data_size).data()))
1392   { }
1393
1394   Elf_Word
1395   get_p_type() const
1396   { return Convert<32, big_endian>::convert_host(this->p_->p_type); }
1397
1398   typename Elf_types<size>::Elf_Off
1399   get_p_offset() const
1400   { return Convert<size, big_endian>::convert_host(this->p_->p_offset); }
1401
1402   typename Elf_types<size>::Elf_Addr
1403   get_p_vaddr() const
1404   { return Convert<size, big_endian>::convert_host(this->p_->p_vaddr); }
1405
1406   typename Elf_types<size>::Elf_Addr
1407   get_p_paddr() const
1408   { return Convert<size, big_endian>::convert_host(this->p_->p_paddr); }
1409
1410   typename Elf_types<size>::Elf_WXword
1411   get_p_filesz() const
1412   { return Convert<size, big_endian>::convert_host(this->p_->p_filesz); }
1413
1414   typename Elf_types<size>::Elf_WXword
1415   get_p_memsz() const
1416   { return Convert<size, big_endian>::convert_host(this->p_->p_memsz); }
1417
1418   Elf_Word
1419   get_p_flags() const
1420   { return Convert<32, big_endian>::convert_host(this->p_->p_flags); }
1421
1422   typename Elf_types<size>::Elf_WXword
1423   get_p_align() const
1424   { return Convert<size, big_endian>::convert_host(this->p_->p_align); }
1425
1426  private:
1427   const internal::Phdr_data<size>* p_;
1428 };
1429
1430 // Write class for an ELF segment header.
1431
1432 template<int size, bool big_endian>
1433 class Phdr_write
1434 {
1435  public:
1436   Phdr_write(unsigned char* p)
1437     : p_(reinterpret_cast<internal::Phdr_data<size>*>(p))
1438   { }
1439
1440   void
1441   put_p_type(Elf_Word v)
1442   { this->p_->p_type = Convert<32, big_endian>::convert_host(v); }
1443
1444   void
1445   put_p_offset(typename Elf_types<size>::Elf_Off v)
1446   { this->p_->p_offset = Convert<size, big_endian>::convert_host(v); }
1447
1448   void
1449   put_p_vaddr(typename Elf_types<size>::Elf_Addr v)
1450   { this->p_->p_vaddr = Convert<size, big_endian>::convert_host(v); }
1451
1452   void
1453   put_p_paddr(typename Elf_types<size>::Elf_Addr v)
1454   { this->p_->p_paddr = Convert<size, big_endian>::convert_host(v); }
1455
1456   void
1457   put_p_filesz(typename Elf_types<size>::Elf_WXword v)
1458   { this->p_->p_filesz = Convert<size, big_endian>::convert_host(v); }
1459
1460   void
1461   put_p_memsz(typename Elf_types<size>::Elf_WXword v)
1462   { this->p_->p_memsz = Convert<size, big_endian>::convert_host(v); }
1463
1464   void
1465   put_p_flags(Elf_Word v)
1466   { this->p_->p_flags = Convert<32, big_endian>::convert_host(v); }
1467
1468   void
1469   put_p_align(typename Elf_types<size>::Elf_WXword v)
1470   { this->p_->p_align = Convert<size, big_endian>::convert_host(v); }
1471
1472  private:
1473   internal::Phdr_data<size>* p_;
1474 };
1475
1476 // Accessor class for an ELF symbol table entry.
1477
1478 template<int size, bool big_endian>
1479 class Sym
1480 {
1481  public:
1482   Sym(const unsigned char* p)
1483     : p_(reinterpret_cast<const internal::Sym_data<size>*>(p))
1484   { }
1485
1486   template<typename File>
1487   Sym(File* file, typename File::Location loc)
1488     : p_(reinterpret_cast<const internal::Sym_data<size>*>(
1489            file->view(loc.file_offset, loc.data_size).data()))
1490   { }
1491
1492   Elf_Word
1493   get_st_name() const
1494   { return Convert<32, big_endian>::convert_host(this->p_->st_name); }
1495
1496   typename Elf_types<size>::Elf_Addr
1497   get_st_value() const
1498   { return Convert<size, big_endian>::convert_host(this->p_->st_value); }
1499
1500   typename Elf_types<size>::Elf_WXword
1501   get_st_size() const
1502   { return Convert<size, big_endian>::convert_host(this->p_->st_size); }
1503
1504   unsigned char
1505   get_st_info() const
1506   { return this->p_->st_info; }
1507
1508   STB
1509   get_st_bind() const
1510   { return elf_st_bind(this->get_st_info()); }
1511
1512   STT
1513   get_st_type() const
1514   { return elf_st_type(this->get_st_info()); }
1515
1516   unsigned char
1517   get_st_other() const
1518   { return this->p_->st_other; }
1519
1520   STV
1521   get_st_visibility() const
1522   { return elf_st_visibility(this->get_st_other()); }
1523
1524   unsigned char
1525   get_st_nonvis() const
1526   { return elf_st_nonvis(this->get_st_other()); }
1527
1528   Elf_Half
1529   get_st_shndx() const
1530   { return Convert<16, big_endian>::convert_host(this->p_->st_shndx); }
1531
1532  private:
1533   const internal::Sym_data<size>* p_;
1534 };
1535
1536 // Writer class for an ELF symbol table entry.
1537
1538 template<int size, bool big_endian>
1539 class Sym_write
1540 {
1541  public:
1542   Sym_write(unsigned char* p)
1543     : p_(reinterpret_cast<internal::Sym_data<size>*>(p))
1544   { }
1545
1546   void
1547   put_st_name(Elf_Word v)
1548   { this->p_->st_name = Convert<32, big_endian>::convert_host(v); }
1549
1550   void
1551   put_st_value(typename Elf_types<size>::Elf_Addr v)
1552   { this->p_->st_value = Convert<size, big_endian>::convert_host(v); }
1553
1554   void
1555   put_st_size(typename Elf_types<size>::Elf_WXword v)
1556   { this->p_->st_size = Convert<size, big_endian>::convert_host(v); }
1557
1558   void
1559   put_st_info(unsigned char v)
1560   { this->p_->st_info = v; }
1561
1562   void
1563   put_st_info(STB bind, STT type)
1564   { this->p_->st_info = elf_st_info(bind, type); }
1565
1566   void
1567   put_st_other(unsigned char v)
1568   { this->p_->st_other = v; }
1569
1570   void
1571   put_st_other(STV vis, unsigned char nonvis)
1572   { this->p_->st_other = elf_st_other(vis, nonvis); }
1573
1574   void
1575   put_st_shndx(Elf_Half v)
1576   { this->p_->st_shndx = Convert<16, big_endian>::convert_host(v); }
1577
1578   Sym<size, big_endian>
1579   sym()
1580   { return Sym<size, big_endian>(reinterpret_cast<unsigned char*>(this->p_)); }
1581
1582  private:
1583   internal::Sym_data<size>* p_;
1584 };
1585
1586 // Accessor classes for an ELF REL relocation entry.
1587
1588 template<int size, bool big_endian>
1589 class Rel
1590 {
1591  public:
1592   Rel(const unsigned char* p)
1593     : p_(reinterpret_cast<const internal::Rel_data<size>*>(p))
1594   { }
1595
1596   template<typename File>
1597   Rel(File* file, typename File::Location loc)
1598     : p_(reinterpret_cast<const internal::Rel_data<size>*>(
1599            file->view(loc.file_offset, loc.data_size).data()))
1600   { }
1601
1602   typename Elf_types<size>::Elf_Addr
1603   get_r_offset() const
1604   { return Convert<size, big_endian>::convert_host(this->p_->r_offset); }
1605
1606   typename Elf_types<size>::Elf_WXword
1607   get_r_info() const
1608   { return Convert<size, big_endian>::convert_host(this->p_->r_info); }
1609
1610  private:
1611   const internal::Rel_data<size>* p_;
1612 };
1613
1614 // Writer class for an ELF Rel relocation.
1615
1616 template<int size, bool big_endian>
1617 class Rel_write
1618 {
1619  public:
1620   Rel_write(unsigned char* p)
1621     : p_(reinterpret_cast<internal::Rel_data<size>*>(p))
1622   { }
1623
1624   void
1625   put_r_offset(typename Elf_types<size>::Elf_Addr v)
1626   { this->p_->r_offset = Convert<size, big_endian>::convert_host(v); }
1627
1628   void
1629   put_r_info(typename Elf_types<size>::Elf_WXword v)
1630   { this->p_->r_info = Convert<size, big_endian>::convert_host(v); }
1631
1632  private:
1633   internal::Rel_data<size>* p_;
1634 };
1635
1636 // Accessor class for an ELF Rela relocation.
1637
1638 template<int size, bool big_endian>
1639 class Rela
1640 {
1641  public:
1642   Rela(const unsigned char* p)
1643     : p_(reinterpret_cast<const internal::Rela_data<size>*>(p))
1644   { }
1645
1646   template<typename File>
1647   Rela(File* file, typename File::Location loc)
1648     : p_(reinterpret_cast<const internal::Rela_data<size>*>(
1649            file->view(loc.file_offset, loc.data_size).data()))
1650   { }
1651
1652   typename Elf_types<size>::Elf_Addr
1653   get_r_offset() const
1654   { return Convert<size, big_endian>::convert_host(this->p_->r_offset); }
1655
1656   typename Elf_types<size>::Elf_WXword
1657   get_r_info() const
1658   { return Convert<size, big_endian>::convert_host(this->p_->r_info); }
1659
1660   typename Elf_types<size>::Elf_Swxword
1661   get_r_addend() const
1662   { return Convert<size, big_endian>::convert_host(this->p_->r_addend); }
1663
1664  private:
1665   const internal::Rela_data<size>* p_;
1666 };
1667
1668 // Writer class for an ELF Rela relocation.
1669
1670 template<int size, bool big_endian>
1671 class Rela_write
1672 {
1673  public:
1674   Rela_write(unsigned char* p)
1675     : p_(reinterpret_cast<internal::Rela_data<size>*>(p))
1676   { }
1677
1678   void
1679   put_r_offset(typename Elf_types<size>::Elf_Addr v)
1680   { this->p_->r_offset = Convert<size, big_endian>::convert_host(v); }
1681
1682   void
1683   put_r_info(typename Elf_types<size>::Elf_WXword v)
1684   { this->p_->r_info = Convert<size, big_endian>::convert_host(v); }
1685
1686   void
1687   put_r_addend(typename Elf_types<size>::Elf_Swxword v)
1688   { this->p_->r_addend = Convert<size, big_endian>::convert_host(v); }
1689
1690  private:
1691   internal::Rela_data<size>* p_;
1692 };
1693
1694 // MIPS-64 has a non-standard relocation layout.
1695
1696 template<bool big_endian>
1697 class Mips64_rel
1698 {
1699  public:
1700   Mips64_rel(const unsigned char* p)
1701     : p_(reinterpret_cast<const internal::Mips64_rel_data*>(p))
1702   { }
1703
1704   template<typename File>
1705   Mips64_rel(File* file, typename File::Location loc)
1706     : p_(reinterpret_cast<const internal::Mips64_rel_data*>(
1707            file->view(loc.file_offset, loc.data_size).data()))
1708   { }
1709
1710   typename Elf_types<64>::Elf_Addr
1711   get_r_offset() const
1712   { return Convert<64, big_endian>::convert_host(this->p_->r_offset); }
1713
1714   Elf_Word
1715   get_r_sym() const
1716   { return Convert<32, big_endian>::convert_host(this->p_->r_sym); }
1717
1718   unsigned char
1719   get_r_ssym() const
1720   { return this->p_->r_ssym; }
1721
1722   unsigned char
1723   get_r_type() const
1724   { return this->p_->r_type; }
1725
1726   unsigned char
1727   get_r_type2() const
1728   { return this->p_->r_type2; }
1729
1730   unsigned char
1731   get_r_type3() const
1732   { return this->p_->r_type3; }
1733
1734  private:
1735   const internal::Mips64_rel_data* p_;
1736 };
1737
1738 template<bool big_endian>
1739 class Mips64_rel_write
1740 {
1741  public:
1742   Mips64_rel_write(unsigned char* p)
1743     : p_(reinterpret_cast<internal::Mips64_rel_data*>(p))
1744   { }
1745
1746   void
1747   put_r_offset(typename Elf_types<64>::Elf_Addr v)
1748   { this->p_->r_offset = Convert<64, big_endian>::convert_host(v); }
1749
1750   void
1751   put_r_sym(Elf_Word v)
1752   { this->p_->r_sym = Convert<32, big_endian>::convert_host(v); }
1753
1754   void
1755   put_r_ssym(unsigned char v)
1756   { this->p_->r_ssym = v; }
1757
1758   void
1759   put_r_type(unsigned char v)
1760   { this->p_->r_type = v; }
1761
1762   void
1763   put_r_type2(unsigned char v)
1764   { this->p_->r_type2 = v; }
1765
1766   void
1767   put_r_type3(unsigned char v)
1768   { this->p_->r_type3 = v; }
1769
1770  private:
1771   internal::Mips64_rel_data* p_;
1772 };
1773
1774 template<bool big_endian>
1775 class Mips64_rela
1776 {
1777  public:
1778   Mips64_rela(const unsigned char* p)
1779     : p_(reinterpret_cast<const internal::Mips64_rela_data*>(p))
1780   { }
1781
1782   template<typename File>
1783   Mips64_rela(File* file, typename File::Location loc)
1784     : p_(reinterpret_cast<const internal::Mips64_rela_data*>(
1785            file->view(loc.file_offset, loc.data_size).data()))
1786   { }
1787
1788   typename Elf_types<64>::Elf_Addr
1789   get_r_offset() const
1790   { return Convert<64, big_endian>::convert_host(this->p_->r_offset); }
1791
1792   Elf_Word
1793   get_r_sym() const
1794   { return Convert<32, big_endian>::convert_host(this->p_->r_sym); }
1795
1796   unsigned char
1797   get_r_ssym() const
1798   { return this->p_->r_ssym; }
1799
1800   unsigned char
1801   get_r_type() const
1802   { return this->p_->r_type; }
1803
1804   unsigned char
1805   get_r_type2() const
1806   { return this->p_->r_type2; }
1807
1808   unsigned char
1809   get_r_type3() const
1810   { return this->p_->r_type3; }
1811
1812   typename Elf_types<64>::Elf_Swxword
1813   get_r_addend() const
1814   { return Convert<64, big_endian>::convert_host(this->p_->r_addend); }
1815
1816  private:
1817   const internal::Mips64_rela_data* p_;
1818 };
1819
1820 template<bool big_endian>
1821 class Mips64_rela_write
1822 {
1823  public:
1824   Mips64_rela_write(unsigned char* p)
1825     : p_(reinterpret_cast<internal::Mips64_rela_data*>(p))
1826   { }
1827
1828   void
1829   put_r_offset(typename Elf_types<64>::Elf_Addr v)
1830   { this->p_->r_offset = Convert<64, big_endian>::convert_host(v); }
1831
1832   void
1833   put_r_sym(Elf_Word v)
1834   { this->p_->r_sym = Convert<32, big_endian>::convert_host(v); }
1835
1836   void
1837   put_r_ssym(unsigned char v)
1838   { this->p_->r_ssym = v; }
1839
1840   void
1841   put_r_type(unsigned char v)
1842   { this->p_->r_type = v; }
1843
1844   void
1845   put_r_type2(unsigned char v)
1846   { this->p_->r_type2 = v; }
1847
1848   void
1849   put_r_type3(unsigned char v)
1850   { this->p_->r_type3 = v; }
1851
1852   void
1853   put_r_addend(typename Elf_types<64>::Elf_Swxword v)
1854   { this->p_->r_addend = Convert<64, big_endian>::convert_host(v); }
1855
1856  private:
1857   internal::Mips64_rela_data* p_;
1858 };
1859
1860 // Accessor classes for entries in the ELF SHT_DYNAMIC section aka
1861 // PT_DYNAMIC segment.
1862
1863 template<int size, bool big_endian>
1864 class Dyn
1865 {
1866  public:
1867   Dyn(const unsigned char* p)
1868     : p_(reinterpret_cast<const internal::Dyn_data<size>*>(p))
1869   { }
1870
1871   template<typename File>
1872   Dyn(File* file, typename File::Location loc)
1873     : p_(reinterpret_cast<const internal::Dyn_data<size>*>(
1874            file->view(loc.file_offset, loc.data_size).data()))
1875   { }
1876
1877   typename Elf_types<size>::Elf_Swxword
1878   get_d_tag() const
1879   { return Convert<size, big_endian>::convert_host(this->p_->d_tag); }
1880
1881   typename Elf_types<size>::Elf_WXword
1882   get_d_val() const
1883   { return Convert<size, big_endian>::convert_host(this->p_->d_val); }
1884
1885   typename Elf_types<size>::Elf_Addr
1886   get_d_ptr() const
1887   { return Convert<size, big_endian>::convert_host(this->p_->d_val); }
1888
1889  private:
1890   const internal::Dyn_data<size>* p_;
1891 };
1892
1893 // Write class for an entry in the SHT_DYNAMIC section.
1894
1895 template<int size, bool big_endian>
1896 class Dyn_write
1897 {
1898  public:
1899   Dyn_write(unsigned char* p)
1900     : p_(reinterpret_cast<internal::Dyn_data<size>*>(p))
1901   { }
1902
1903   void
1904   put_d_tag(typename Elf_types<size>::Elf_Swxword v)
1905   { this->p_->d_tag = Convert<size, big_endian>::convert_host(v); }
1906
1907   void
1908   put_d_val(typename Elf_types<size>::Elf_WXword v)
1909   { this->p_->d_val = Convert<size, big_endian>::convert_host(v); }
1910
1911   void
1912   put_d_ptr(typename Elf_types<size>::Elf_Addr v)
1913   { this->p_->d_val = Convert<size, big_endian>::convert_host(v); }
1914
1915  private:
1916   internal::Dyn_data<size>* p_;
1917 };
1918
1919 // Accessor classes for entries in the ELF SHT_GNU_verdef section.
1920
1921 template<int size, bool big_endian>
1922 class Verdef
1923 {
1924  public:
1925   Verdef(const unsigned char* p)
1926     : p_(reinterpret_cast<const internal::Verdef_data*>(p))
1927   { }
1928
1929   template<typename File>
1930   Verdef(File* file, typename File::Location loc)
1931     : p_(reinterpret_cast<const internal::Verdef_data*>(
1932            file->view(loc.file_offset, loc.data_size).data()))
1933   { }
1934
1935   Elf_Half
1936   get_vd_version() const
1937   { return Convert<16, big_endian>::convert_host(this->p_->vd_version); }
1938
1939   Elf_Half
1940   get_vd_flags() const
1941   { return Convert<16, big_endian>::convert_host(this->p_->vd_flags); }
1942
1943   Elf_Half
1944   get_vd_ndx() const
1945   { return Convert<16, big_endian>::convert_host(this->p_->vd_ndx); }
1946
1947   Elf_Half
1948   get_vd_cnt() const
1949   { return Convert<16, big_endian>::convert_host(this->p_->vd_cnt); }
1950
1951   Elf_Word
1952   get_vd_hash() const
1953   { return Convert<32, big_endian>::convert_host(this->p_->vd_hash); }
1954
1955   Elf_Word
1956   get_vd_aux() const
1957   { return Convert<32, big_endian>::convert_host(this->p_->vd_aux); }
1958
1959   Elf_Word
1960   get_vd_next() const
1961   { return Convert<32, big_endian>::convert_host(this->p_->vd_next); }
1962
1963  private:
1964   const internal::Verdef_data* p_;
1965 };
1966
1967 template<int size, bool big_endian>
1968 class Verdef_write
1969 {
1970  public:
1971   Verdef_write(unsigned char* p)
1972     : p_(reinterpret_cast<internal::Verdef_data*>(p))
1973   { }
1974
1975   void
1976   set_vd_version(Elf_Half v)
1977   { this->p_->vd_version = Convert<16, big_endian>::convert_host(v); }
1978
1979   void
1980   set_vd_flags(Elf_Half v)
1981   { this->p_->vd_flags = Convert<16, big_endian>::convert_host(v); }
1982
1983   void
1984   set_vd_ndx(Elf_Half v)
1985   { this->p_->vd_ndx = Convert<16, big_endian>::convert_host(v); }
1986
1987   void
1988   set_vd_cnt(Elf_Half v)
1989   { this->p_->vd_cnt = Convert<16, big_endian>::convert_host(v); }
1990
1991   void
1992   set_vd_hash(Elf_Word v)
1993   { this->p_->vd_hash = Convert<32, big_endian>::convert_host(v); }
1994
1995   void
1996   set_vd_aux(Elf_Word v)
1997   { this->p_->vd_aux = Convert<32, big_endian>::convert_host(v); }
1998
1999   void
2000   set_vd_next(Elf_Word v)
2001   { this->p_->vd_next = Convert<32, big_endian>::convert_host(v); }
2002
2003  private:
2004   internal::Verdef_data* p_;
2005 };
2006
2007 // Accessor classes for auxiliary entries in the ELF SHT_GNU_verdef
2008 // section.
2009
2010 template<int size, bool big_endian>
2011 class Verdaux
2012 {
2013  public:
2014   Verdaux(const unsigned char* p)
2015     : p_(reinterpret_cast<const internal::Verdaux_data*>(p))
2016   { }
2017
2018   template<typename File>
2019   Verdaux(File* file, typename File::Location loc)
2020     : p_(reinterpret_cast<const internal::Verdaux_data*>(
2021            file->view(loc.file_offset, loc.data_size).data()))
2022   { }
2023
2024   Elf_Word
2025   get_vda_name() const
2026   { return Convert<32, big_endian>::convert_host(this->p_->vda_name); }
2027
2028   Elf_Word
2029   get_vda_next() const
2030   { return Convert<32, big_endian>::convert_host(this->p_->vda_next); }
2031
2032  private:
2033   const internal::Verdaux_data* p_;
2034 };
2035
2036 template<int size, bool big_endian>
2037 class Verdaux_write
2038 {
2039  public:
2040   Verdaux_write(unsigned char* p)
2041     : p_(reinterpret_cast<internal::Verdaux_data*>(p))
2042   { }
2043
2044   void
2045   set_vda_name(Elf_Word v)
2046   { this->p_->vda_name = Convert<32, big_endian>::convert_host(v); }
2047
2048   void
2049   set_vda_next(Elf_Word v)
2050   { this->p_->vda_next = Convert<32, big_endian>::convert_host(v); }
2051
2052  private:
2053   internal::Verdaux_data* p_;
2054 };
2055
2056 // Accessor classes for entries in the ELF SHT_GNU_verneed section.
2057
2058 template<int size, bool big_endian>
2059 class Verneed
2060 {
2061  public:
2062   Verneed(const unsigned char* p)
2063     : p_(reinterpret_cast<const internal::Verneed_data*>(p))
2064   { }
2065
2066   template<typename File>
2067   Verneed(File* file, typename File::Location loc)
2068     : p_(reinterpret_cast<const internal::Verneed_data*>(
2069            file->view(loc.file_offset, loc.data_size).data()))
2070   { }
2071
2072   Elf_Half
2073   get_vn_version() const
2074   { return Convert<16, big_endian>::convert_host(this->p_->vn_version); }
2075
2076   Elf_Half
2077   get_vn_cnt() const
2078   { return Convert<16, big_endian>::convert_host(this->p_->vn_cnt); }
2079
2080   Elf_Word
2081   get_vn_file() const
2082   { return Convert<32, big_endian>::convert_host(this->p_->vn_file); }
2083
2084   Elf_Word
2085   get_vn_aux() const
2086   { return Convert<32, big_endian>::convert_host(this->p_->vn_aux); }
2087
2088   Elf_Word
2089   get_vn_next() const
2090   { return Convert<32, big_endian>::convert_host(this->p_->vn_next); }
2091
2092  private:
2093   const internal::Verneed_data* p_;
2094 };
2095
2096 template<int size, bool big_endian>
2097 class Verneed_write
2098 {
2099  public:
2100   Verneed_write(unsigned char* p)
2101     : p_(reinterpret_cast<internal::Verneed_data*>(p))
2102   { }
2103
2104   void
2105   set_vn_version(Elf_Half v)
2106   { this->p_->vn_version = Convert<16, big_endian>::convert_host(v); }
2107
2108   void
2109   set_vn_cnt(Elf_Half v)
2110   { this->p_->vn_cnt = Convert<16, big_endian>::convert_host(v); }
2111
2112   void
2113   set_vn_file(Elf_Word v)
2114   { this->p_->vn_file = Convert<32, big_endian>::convert_host(v); }
2115
2116   void
2117   set_vn_aux(Elf_Word v)
2118   { this->p_->vn_aux = Convert<32, big_endian>::convert_host(v); }
2119
2120   void
2121   set_vn_next(Elf_Word v)
2122   { this->p_->vn_next = Convert<32, big_endian>::convert_host(v); }
2123
2124  private:
2125   internal::Verneed_data* p_;
2126 };
2127
2128 // Accessor classes for auxiliary entries in the ELF SHT_GNU_verneed
2129 // section.
2130
2131 template<int size, bool big_endian>
2132 class Vernaux
2133 {
2134  public:
2135   Vernaux(const unsigned char* p)
2136     : p_(reinterpret_cast<const internal::Vernaux_data*>(p))
2137   { }
2138
2139   template<typename File>
2140   Vernaux(File* file, typename File::Location loc)
2141     : p_(reinterpret_cast<const internal::Vernaux_data*>(
2142            file->view(loc.file_offset, loc.data_size).data()))
2143   { }
2144
2145   Elf_Word
2146   get_vna_hash() const
2147   { return Convert<32, big_endian>::convert_host(this->p_->vna_hash); }
2148
2149   Elf_Half
2150   get_vna_flags() const
2151   { return Convert<16, big_endian>::convert_host(this->p_->vna_flags); }
2152
2153   Elf_Half
2154   get_vna_other() const
2155   { return Convert<16, big_endian>::convert_host(this->p_->vna_other); }
2156
2157   Elf_Word
2158   get_vna_name() const
2159   { return Convert<32, big_endian>::convert_host(this->p_->vna_name); }
2160
2161   Elf_Word
2162   get_vna_next() const
2163   { return Convert<32, big_endian>::convert_host(this->p_->vna_next); }
2164
2165  private:
2166   const internal::Vernaux_data* p_;
2167 };
2168
2169 template<int size, bool big_endian>
2170 class Vernaux_write
2171 {
2172  public:
2173   Vernaux_write(unsigned char* p)
2174     : p_(reinterpret_cast<internal::Vernaux_data*>(p))
2175   { }
2176
2177   void
2178   set_vna_hash(Elf_Word v)
2179   { this->p_->vna_hash = Convert<32, big_endian>::convert_host(v); }
2180
2181   void
2182   set_vna_flags(Elf_Half v)
2183   { this->p_->vna_flags = Convert<16, big_endian>::convert_host(v); }
2184
2185   void
2186   set_vna_other(Elf_Half v)
2187   { this->p_->vna_other = Convert<16, big_endian>::convert_host(v); }
2188
2189   void
2190   set_vna_name(Elf_Word v)
2191   { this->p_->vna_name = Convert<32, big_endian>::convert_host(v); }
2192
2193   void
2194   set_vna_next(Elf_Word v)
2195   { this->p_->vna_next = Convert<32, big_endian>::convert_host(v); }
2196
2197  private:
2198   internal::Vernaux_data* p_;
2199 };
2200
2201 } // End namespace elfcpp.
2202
2203 #endif // !defined(ELFPCP_H)