elfcpp/elfcpp.h

   1 // elfcpp.h -- main header file for elfcpp    -*- C++ -*-
   2
   3 // Copyright (C) 2006-2014 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   // 6 used to be EM_486
 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_AARCH64 = 183,
 272   EM_TILEGX = 191,
 273   // The Morph MT.
 274   EM_MT = 0x2530,
 275   // DLX.
 276   EM_DLX = 0x5aa5,
 277   // FRV.
 278   EM_FRV = 0x5441,
 279   // Infineon Technologies 16-bit microcontroller with C166-V2 core.
 280   EM_X16X = 0x4688,
 281   // Xstorym16
 282   EM_XSTORMY16 = 0xad45,
 283   // Renesas M32C
 284   EM_M32C = 0xfeb0,
 285   // Vitesse IQ2000
 286   EM_IQ2000 = 0xfeba,
 287   // NIOS
 288   EM_NIOS32 = 0xfebb
 289   // Old AVR objects used 0x1057 (EM_AVR is correct).
 290   // Old MSP430 objects used 0x1059 (EM_MSP430 is correct).
 291   // Old FR30 objects used 0x3330 (EM_FR30 is correct).
 292   // Old OpenRISC objects used 0x3426 and 0x8472 (EM_OR1K is correct).
 293   // Old D10V objects used 0x7650 (EM_D10V is correct).
 294   // Old D30V objects used 0x7676 (EM_D30V is correct).
 295   // Old IP2X objects used 0x8217 (EM_IP2K is correct).
 296   // Old PowerPC objects used 0x9025 (EM_PPC is correct).
 297   // Old Alpha objects used 0x9026 (EM_ALPHA is correct).
 298   // Old M32R objects used 0x9041 (EM_M32R is correct).
 299   // Old V850 objects used 0x9080 (EM_V850 is correct).
 300   // Old S/390 objects used 0xa390 (EM_S390 is correct).
 301   // Old Xtensa objects used 0xabc7 (EM_XTENSA is correct).
 302   // Old MN10300 objects used 0xbeef (EM_MN10300 is correct).
 303   // Old MN10200 objects used 0xdead (EM_MN10200 is correct).
 304 };
 305
 306 // A special value found in the Ehdr e_phnum field.
 307
 308 enum
 309 {
 310   // Number of program segments stored in sh_info field of first
 311   // section headre.
 312   PN_XNUM = 0xffff
 313 };
 314
 315 // Special section indices.
 316
 317 enum
 318 {
 319   SHN_UNDEF = 0,
 320   SHN_LORESERVE = 0xff00,
 321   SHN_LOPROC = 0xff00,
 322   SHN_HIPROC = 0xff1f,
 323   SHN_LOOS = 0xff20,
 324   SHN_HIOS = 0xff3f,
 325   SHN_ABS = 0xfff1,
 326   SHN_COMMON = 0xfff2,
 327   SHN_XINDEX = 0xffff,
 328   SHN_HIRESERVE = 0xffff,
 329
 330   // Provide for initial and final section ordering in conjunction
 331   // with the SHF_LINK_ORDER and SHF_ORDERED section flags.
 332   SHN_BEFORE = 0xff00,
 333   SHN_AFTER = 0xff01,
 334
 335   // x86_64 specific large common symbol.
 336   SHN_X86_64_LCOMMON = 0xff02
 337 };
 338
 339 // The valid values found in the Shdr sh_type field.
 340
 341 enum SHT
 342 {
 343   SHT_NULL = 0,
 344   SHT_PROGBITS = 1,
 345   SHT_SYMTAB = 2,
 346   SHT_STRTAB = 3,
 347   SHT_RELA = 4,
 348   SHT_HASH = 5,
 349   SHT_DYNAMIC = 6,
 350   SHT_NOTE = 7,
 351   SHT_NOBITS = 8,
 352   SHT_REL = 9,
 353   SHT_SHLIB = 10,
 354   SHT_DYNSYM = 11,
 355   SHT_INIT_ARRAY = 14,
 356   SHT_FINI_ARRAY = 15,
 357   SHT_PREINIT_ARRAY = 16,
 358   SHT_GROUP = 17,
 359   SHT_SYMTAB_SHNDX = 18,
 360   SHT_LOOS = 0x60000000,
 361   SHT_HIOS = 0x6fffffff,
 362   SHT_LOPROC = 0x70000000,
 363   SHT_HIPROC = 0x7fffffff,
 364   SHT_LOUSER = 0x80000000,
 365   SHT_HIUSER = 0xffffffff,
 366   // The remaining values are not in the standard.
 367   // Incremental build data.
 368   SHT_GNU_INCREMENTAL_INPUTS = 0x6fff4700,
 369   SHT_GNU_INCREMENTAL_SYMTAB = 0x6fff4701,
 370   SHT_GNU_INCREMENTAL_RELOCS = 0x6fff4702,
 371   SHT_GNU_INCREMENTAL_GOT_PLT = 0x6fff4703,
 372   // Object attributes.
 373   SHT_GNU_ATTRIBUTES = 0x6ffffff5,
 374   // GNU style dynamic hash table.
 375   SHT_GNU_HASH = 0x6ffffff6,
 376   // List of prelink dependencies.
 377   SHT_GNU_LIBLIST = 0x6ffffff7,
 378   // Versions defined by file.
 379   SHT_SUNW_verdef = 0x6ffffffd,
 380   SHT_GNU_verdef = 0x6ffffffd,
 381   // Versions needed by file.
 382   SHT_SUNW_verneed = 0x6ffffffe,
 383   SHT_GNU_verneed = 0x6ffffffe,
 384   // Symbol versions,
 385   SHT_SUNW_versym = 0x6fffffff,
 386   SHT_GNU_versym = 0x6fffffff,
 387
 388   SHT_SPARC_GOTDATA = 0x70000000,
 389
 390   // ARM-specific section types.
 391   // Exception Index table.
 392   SHT_ARM_EXIDX = 0x70000001,
 393   // BPABI DLL dynamic linking pre-emption map.
 394   SHT_ARM_PREEMPTMAP = 0x70000002,
 395   // Object file compatibility attributes.
 396   SHT_ARM_ATTRIBUTES = 0x70000003,
 397   // Support for debugging overlaid programs.
 398   SHT_ARM_DEBUGOVERLAY = 0x70000004,
 399   SHT_ARM_OVERLAYSECTION = 0x70000005,
 400
 401   // x86_64 unwind information.
 402   SHT_X86_64_UNWIND = 0x70000001,
 403
 404   // MIPS-specific section types.
 405   // Section contains register usage information.
 406   SHT_MIPS_REGINFO = 0x70000006,
 407   // Section contains miscellaneous options.
 408   SHT_MIPS_OPTIONS = 0x7000000d,
 409
 410   // AARCH64-specific section type.
 411   SHT_AARCH64_ATTRIBUTES = 0x70000003,
 412
 413   // Link editor is to sort the entries in this section based on the
 414   // address specified in the associated symbol table entry.
 415   SHT_ORDERED = 0x7fffffff
 416 };
 417
 418 // The valid bit flags found in the Shdr sh_flags field.
 419
 420 enum SHF
 421 {
 422   SHF_WRITE = 0x1,
 423   SHF_ALLOC = 0x2,
 424   SHF_EXECINSTR = 0x4,
 425   SHF_MERGE = 0x10,
 426   SHF_STRINGS = 0x20,
 427   SHF_INFO_LINK = 0x40,
 428   SHF_LINK_ORDER = 0x80,
 429   SHF_OS_NONCONFORMING = 0x100,
 430   SHF_GROUP = 0x200,
 431   SHF_TLS = 0x400,
 432   SHF_MASKOS = 0x0ff00000,
 433   SHF_MASKPROC = 0xf0000000,
 434
 435   // Indicates this section requires ordering in relation to
 436   // other sections of the same type.  Ordered sections are
 437   // combined within the section pointed to by the sh_link entry.
 438   // The sh_info values SHN_BEFORE and SHN_AFTER imply that the
 439   // sorted section is to precede or follow, respectively, all
 440   // other sections in the set being ordered.
 441   SHF_ORDERED = 0x40000000,
 442   // This section is excluded from input to the link-edit of an
 443   // executable or shared object.  This flag is ignored if SHF_ALLOC
 444   // is also set, or if relocations exist against the section.
 445   SHF_EXCLUDE = 0x80000000,
 446
 447   // Section with data that is GP relative addressable.
 448   SHF_MIPS_GPREL = 0x10000000,
 449
 450   // x86_64 specific large section.
 451   SHF_X86_64_LARGE = 0x10000000
 452 };
 453
 454 // Bit flags which appear in the first 32-bit word of the section data
 455 // of a SHT_GROUP section.
 456
 457 enum
 458 {
 459   GRP_COMDAT = 0x1,
 460   GRP_MASKOS = 0x0ff00000,
 461   GRP_MASKPROC = 0xf0000000
 462 };
 463
 464 // The valid values found in the Phdr p_type field.
 465
 466 enum PT
 467 {
 468   PT_NULL = 0,
 469   PT_LOAD = 1,
 470   PT_DYNAMIC = 2,
 471   PT_INTERP = 3,
 472   PT_NOTE = 4,
 473   PT_SHLIB = 5,
 474   PT_PHDR = 6,
 475   PT_TLS = 7,
 476   PT_LOOS = 0x60000000,
 477   PT_HIOS = 0x6fffffff,
 478   PT_LOPROC = 0x70000000,
 479   PT_HIPROC = 0x7fffffff,
 480   // The remaining values are not in the standard.
 481   // Frame unwind information.
 482   PT_GNU_EH_FRAME = 0x6474e550,
 483   PT_SUNW_EH_FRAME = 0x6474e550,
 484   // Stack flags.
 485   PT_GNU_STACK = 0x6474e551,
 486   // Read only after relocation.
 487   PT_GNU_RELRO = 0x6474e552,
 488   // Platform architecture compatibility information
 489   PT_ARM_ARCHEXT = 0x70000000,
 490   // Exception unwind tables
 491   PT_ARM_EXIDX = 0x70000001,
 492   // Register usage information.  Identifies one .reginfo section.
 493   PT_MIPS_REGINFO =0x70000000,
 494   // Runtime procedure table.
 495   PT_MIPS_RTPROC = 0x70000001,
 496   // .MIPS.options section.
 497   PT_MIPS_OPTIONS = 0x70000002,
 498   // .MIPS.abiflags section.
 499   PT_MIPS_ABIFLAGS = 0x70000003,
 500   // Platform architecture compatibility information
 501   PT_AARCH64_ARCHEXT = 0x70000000,
 502   // Exception unwind tables
 503   PT_AARCH64_UNWIND = 0x70000001
 504 };
 505
 506 // The valid bit flags found in the Phdr p_flags field.
 507
 508 enum PF
 509 {
 510   PF_X = 0x1,
 511   PF_W = 0x2,
 512   PF_R = 0x4,
 513   PF_MASKOS = 0x0ff00000,
 514   PF_MASKPROC = 0xf0000000
 515 };
 516
 517 // Symbol binding from Sym st_info field.
 518
 519 enum STB
 520 {
 521   STB_LOCAL = 0,
 522   STB_GLOBAL = 1,
 523   STB_WEAK = 2,
 524   STB_LOOS = 10,
 525   STB_GNU_UNIQUE = 10,
 526   STB_HIOS = 12,
 527   STB_LOPROC = 13,
 528   STB_HIPROC = 15
 529 };
 530
 531 // Symbol types from Sym st_info field.
 532
 533 enum STT
 534 {
 535   STT_NOTYPE = 0,
 536   STT_OBJECT = 1,
 537   STT_FUNC = 2,
 538   STT_SECTION = 3,
 539   STT_FILE = 4,
 540   STT_COMMON = 5,
 541   STT_TLS = 6,
 542
 543   // GNU extension: symbol value points to a function which is called
 544   // at runtime to determine the final value of the symbol.
 545   STT_GNU_IFUNC = 10,
 546
 547   STT_LOOS = 10,
 548   STT_HIOS = 12,
 549   STT_LOPROC = 13,
 550   STT_HIPROC = 15,
 551
 552   // The section type that must be used for register symbols on
 553   // Sparc.  These symbols initialize a global register.
 554   STT_SPARC_REGISTER = 13,
 555
 556   // ARM: a THUMB function.  This is not defined in ARM ELF Specification but
 557   // used by the GNU tool-chain.
 558   STT_ARM_TFUNC = 13
 559 };
 560
 561 inline STB
 562 elf_st_bind(unsigned char info)
 563 {
 564   return static_cast<STB>(info >> 4);
 565 }
 566
 567 inline STT
 568 elf_st_type(unsigned char info)
 569 {
 570   return static_cast<STT>(info & 0xf);
 571 }
 572
 573 inline unsigned char
 574 elf_st_info(STB bind, STT type)
 575 {
 576   return ((static_cast<unsigned char>(bind) << 4)
 577           + (static_cast<unsigned char>(type) & 0xf));
 578 }
 579
 580 // Symbol visibility from Sym st_other field.
 581
 582 enum STV
 583 {
 584   STV_DEFAULT = 0,
 585   STV_INTERNAL = 1,
 586   STV_HIDDEN = 2,
 587   STV_PROTECTED = 3
 588 };
 589
 590 inline STV
 591 elf_st_visibility(unsigned char other)
 592 {
 593   return static_cast<STV>(other & 0x3);
 594 }
 595
 596 inline unsigned char
 597 elf_st_nonvis(unsigned char other)
 598 {
 599   return static_cast<STV>(other >> 2);
 600 }
 601
 602 inline unsigned char
 603 elf_st_other(STV vis, unsigned char nonvis)
 604 {
 605   return ((nonvis << 2)
 606           + (static_cast<unsigned char>(vis) & 3));
 607 }
 608
 609 // Reloc information from Rel/Rela r_info field.
 610
 611 template<int size>
 612 unsigned int
 613 elf_r_sym(typename Elf_types<size>::Elf_WXword);
 614
 615 template<>
 616 inline unsigned int
 617 elf_r_sym<32>(Elf_Word v)
 618 {
 619   return v >> 8;
 620 }
 621
 622 template<>
 623 inline unsigned int
 624 elf_r_sym<64>(Elf_Xword v)
 625 {
 626   return v >> 32;
 627 }
 628
 629 template<int size>
 630 unsigned int
 631 elf_r_type(typename Elf_types<size>::Elf_WXword);
 632
 633 template<>
 634 inline unsigned int
 635 elf_r_type<32>(Elf_Word v)
 636 {
 637   return v & 0xff;
 638 }
 639
 640 template<>
 641 inline unsigned int
 642 elf_r_type<64>(Elf_Xword v)
 643 {
 644   return v & 0xffffffff;
 645 }
 646
 647 template<int size>
 648 typename Elf_types<size>::Elf_WXword
 649 elf_r_info(unsigned int s, unsigned int t);
 650
 651 template<>
 652 inline Elf_Word
 653 elf_r_info<32>(unsigned int s, unsigned int t)
 654 {
 655   return (s << 8) + (t & 0xff);
 656 }
 657
 658 template<>
 659 inline Elf_Xword
 660 elf_r_info<64>(unsigned int s, unsigned int t)
 661 {
 662   return (static_cast<Elf_Xword>(s) << 32) + (t & 0xffffffff);
 663 }
 664
 665 // Dynamic tags found in the PT_DYNAMIC segment.
 666
 667 enum DT
 668 {
 669   DT_NULL = 0,
 670   DT_NEEDED = 1,
 671   DT_PLTRELSZ = 2,
 672   DT_PLTGOT = 3,
 673   DT_HASH = 4,
 674   DT_STRTAB = 5,
 675   DT_SYMTAB = 6,
 676   DT_RELA = 7,
 677   DT_RELASZ = 8,
 678   DT_RELAENT = 9,
 679   DT_STRSZ = 10,
 680   DT_SYMENT = 11,
 681   DT_INIT = 12,
 682   DT_FINI = 13,
 683   DT_SONAME = 14,
 684   DT_RPATH = 15,
 685   DT_SYMBOLIC = 16,
 686   DT_REL = 17,
 687   DT_RELSZ = 18,
 688   DT_RELENT = 19,
 689   DT_PLTREL = 20,
 690   DT_DEBUG = 21,
 691   DT_TEXTREL = 22,
 692   DT_JMPREL = 23,
 693   DT_BIND_NOW = 24,
 694   DT_INIT_ARRAY = 25,
 695   DT_FINI_ARRAY = 26,
 696   DT_INIT_ARRAYSZ = 27,
 697   DT_FINI_ARRAYSZ = 28,
 698   DT_RUNPATH = 29,
 699   DT_FLAGS = 30,
 700
 701   // This is used to mark a range of dynamic tags.  It is not really
 702   // a tag value.
 703   DT_ENCODING = 32,
 704
 705   DT_PREINIT_ARRAY = 32,
 706   DT_PREINIT_ARRAYSZ = 33,
 707   DT_LOOS = 0x6000000d,
 708   DT_HIOS = 0x6ffff000,
 709   DT_LOPROC = 0x70000000,
 710   DT_HIPROC = 0x7fffffff,
 711
 712   // The remaining values are extensions used by GNU or Solaris.
 713   DT_VALRNGLO = 0x6ffffd00,
 714   DT_GNU_PRELINKED = 0x6ffffdf5,
 715   DT_GNU_CONFLICTSZ = 0x6ffffdf6,
 716   DT_GNU_LIBLISTSZ = 0x6ffffdf7,
 717   DT_CHECKSUM = 0x6ffffdf8,
 718   DT_PLTPADSZ = 0x6ffffdf9,
 719   DT_MOVEENT = 0x6ffffdfa,
 720   DT_MOVESZ = 0x6ffffdfb,
 721   DT_FEATURE = 0x6ffffdfc,
 722   DT_POSFLAG_1 = 0x6ffffdfd,
 723   DT_SYMINSZ = 0x6ffffdfe,
 724   DT_SYMINENT = 0x6ffffdff,
 725   DT_VALRNGHI = 0x6ffffdff,
 726
 727   DT_ADDRRNGLO = 0x6ffffe00,
 728   DT_GNU_HASH = 0x6ffffef5,
 729   DT_TLSDESC_PLT = 0x6ffffef6,
 730   DT_TLSDESC_GOT = 0x6ffffef7,
 731   DT_GNU_CONFLICT = 0x6ffffef8,
 732   DT_GNU_LIBLIST = 0x6ffffef9,
 733   DT_CONFIG = 0x6ffffefa,
 734   DT_DEPAUDIT = 0x6ffffefb,
 735   DT_AUDIT = 0x6ffffefc,
 736   DT_PLTPAD = 0x6ffffefd,
 737   DT_MOVETAB = 0x6ffffefe,
 738   DT_SYMINFO = 0x6ffffeff,
 739   DT_ADDRRNGHI = 0x6ffffeff,
 740
 741   DT_RELACOUNT = 0x6ffffff9,
 742   DT_RELCOUNT = 0x6ffffffa,
 743   DT_FLAGS_1 = 0x6ffffffb,
 744   DT_VERDEF = 0x6ffffffc,
 745   DT_VERDEFNUM = 0x6ffffffd,
 746   DT_VERNEED = 0x6ffffffe,
 747   DT_VERNEEDNUM = 0x6fffffff,
 748
 749   DT_VERSYM = 0x6ffffff0,
 750
 751   // Specify the value of _GLOBAL_OFFSET_TABLE_.
 752   DT_PPC_GOT = 0x70000000,
 753
 754   // Specify the start of the .glink section.
 755   DT_PPC64_GLINK = 0x70000000,
 756
 757   // Specify the start and size of the .opd section.
 758   DT_PPC64_OPD = 0x70000001,
 759   DT_PPC64_OPDSZ = 0x70000002,
 760
 761   // The index of an STT_SPARC_REGISTER symbol within the DT_SYMTAB
 762   // symbol table.  One dynamic entry exists for every STT_SPARC_REGISTER
 763   // symbol in the symbol table.
 764   DT_SPARC_REGISTER = 0x70000001,
 765
 766   // MIPS specific dynamic array tags.
 767   // 32 bit version number for runtime linker interface.
 768   DT_MIPS_RLD_VERSION = 0x70000001,
 769   // Time stamp.
 770   DT_MIPS_TIME_STAMP = 0x70000002,
 771   // Checksum of external strings and common sizes.
 772   DT_MIPS_ICHECKSUM = 0x70000003,
 773   // Index of version string in string table.
 774   DT_MIPS_IVERSION = 0x70000004,
 775   // 32 bits of flags.
 776   DT_MIPS_FLAGS = 0x70000005,
 777   // Base address of the segment.
 778   DT_MIPS_BASE_ADDRESS = 0x70000006,
 779   // ???
 780   DT_MIPS_MSYM = 0x70000007,
 781   // Address of .conflict section.
 782   DT_MIPS_CONFLICT = 0x70000008,
 783   // Address of .liblist section.
 784   DT_MIPS_LIBLIST = 0x70000009,
 785   // Number of local global offset table entries.
 786   DT_MIPS_LOCAL_GOTNO = 0x7000000a,
 787   // Number of entries in the .conflict section.
 788   DT_MIPS_CONFLICTNO = 0x7000000b,
 789   // Number of entries in the .liblist section.
 790   DT_MIPS_LIBLISTNO = 0x70000010,
 791   // Number of entries in the .dynsym section.
 792   DT_MIPS_SYMTABNO = 0x70000011,
 793   // Index of first external dynamic symbol not referenced locally.
 794   DT_MIPS_UNREFEXTNO = 0x70000012,
 795   // Index of first dynamic symbol in global offset table.
 796   DT_MIPS_GOTSYM = 0x70000013,
 797   // Number of page table entries in global offset table.
 798   DT_MIPS_HIPAGENO = 0x70000014,
 799   // Address of run time loader map, used for debugging.
 800   DT_MIPS_RLD_MAP = 0x70000016,
 801   // Delta C++ class definition.
 802   DT_MIPS_DELTA_CLASS = 0x70000017,
 803   // Number of entries in DT_MIPS_DELTA_CLASS.
 804   DT_MIPS_DELTA_CLASS_NO = 0x70000018,
 805   // Delta C++ class instances.
 806   DT_MIPS_DELTA_INSTANCE = 0x70000019,
 807   // Number of entries in DT_MIPS_DELTA_INSTANCE.
 808   DT_MIPS_DELTA_INSTANCE_NO = 0x7000001a,
 809   // Delta relocations.
 810   DT_MIPS_DELTA_RELOC = 0x7000001b,
 811   // Number of entries in DT_MIPS_DELTA_RELOC.
 812   DT_MIPS_DELTA_RELOC_NO = 0x7000001c,
 813   // Delta symbols that Delta relocations refer to.
 814   DT_MIPS_DELTA_SYM = 0x7000001d,
 815   // Number of entries in DT_MIPS_DELTA_SYM.
 816   DT_MIPS_DELTA_SYM_NO = 0x7000001e,
 817   // Delta symbols that hold class declarations.
 818   DT_MIPS_DELTA_CLASSSYM = 0x70000020,
 819   // Number of entries in DT_MIPS_DELTA_CLASSSYM.
 820   DT_MIPS_DELTA_CLASSSYM_NO = 0x70000021,
 821   // Flags indicating information about C++ flavor.
 822   DT_MIPS_CXX_FLAGS = 0x70000022,
 823   // Pixie information (???).
 824   DT_MIPS_PIXIE_INIT = 0x70000023,
 825   // Address of .MIPS.symlib
 826   DT_MIPS_SYMBOL_LIB = 0x70000024,
 827   // The GOT index of the first PTE for a segment
 828   DT_MIPS_LOCALPAGE_GOTIDX = 0x70000025,
 829   // The GOT index of the first PTE for a local symbol
 830   DT_MIPS_LOCAL_GOTIDX = 0x70000026,
 831   // The GOT index of the first PTE for a hidden symbol
 832   DT_MIPS_HIDDEN_GOTIDX = 0x70000027,
 833   // The GOT index of the first PTE for a protected symbol
 834   DT_MIPS_PROTECTED_GOTIDX = 0x70000028,
 835   // Address of `.MIPS.options'.
 836   DT_MIPS_OPTIONS = 0x70000029,
 837   // Address of `.interface'.
 838   DT_MIPS_INTERFACE = 0x7000002a,
 839   // ???
 840   DT_MIPS_DYNSTR_ALIGN = 0x7000002b,
 841   // Size of the .interface section.
 842   DT_MIPS_INTERFACE_SIZE = 0x7000002c,
 843   // Size of rld_text_resolve function stored in the GOT.
 844   DT_MIPS_RLD_TEXT_RESOLVE_ADDR = 0x7000002d,
 845   // Default suffix of DSO to be added by rld on dlopen() calls.
 846   DT_MIPS_PERF_SUFFIX = 0x7000002e,
 847   // Size of compact relocation section (O32).
 848   DT_MIPS_COMPACT_SIZE = 0x7000002f,
 849   // GP value for auxiliary GOTs.
 850   DT_MIPS_GP_VALUE = 0x70000030,
 851   // Address of auxiliary .dynamic.
 852   DT_MIPS_AUX_DYNAMIC = 0x70000031,
 853   // Address of the base of the PLTGOT.
 854   DT_MIPS_PLTGOT = 0x70000032,
 855   // Points to the base of a writable PLT.
 856   DT_MIPS_RWPLT = 0x70000034,
 857
 858   DT_AUXILIARY = 0x7ffffffd,
 859   DT_USED = 0x7ffffffe,
 860   DT_FILTER = 0x7fffffff
 861 };
 862
 863 // Flags found in the DT_FLAGS dynamic element.
 864
 865 enum DF
 866 {
 867   DF_ORIGIN = 0x1,
 868   DF_SYMBOLIC = 0x2,
 869   DF_TEXTREL = 0x4,
 870   DF_BIND_NOW = 0x8,
 871   DF_STATIC_TLS = 0x10
 872 };
 873
 874 // Flags found in the DT_FLAGS_1 dynamic element.
 875
 876 enum DF_1
 877 {
 878   DF_1_NOW = 0x1,
 879   DF_1_GLOBAL = 0x2,
 880   DF_1_GROUP = 0x4,
 881   DF_1_NODELETE = 0x8,
 882   DF_1_LOADFLTR = 0x10,
 883   DF_1_INITFIRST = 0x20,
 884   DF_1_NOOPEN = 0x40,
 885   DF_1_ORIGIN = 0x80,
 886   DF_1_DIRECT = 0x100,
 887   DF_1_TRANS = 0x200,
 888   DF_1_INTERPOSE = 0x400,
 889   DF_1_NODEFLIB = 0x800,
 890   DF_1_NODUMP = 0x1000,
 891   DF_1_CONLFAT = 0x2000
 892 };
 893
 894 // Version numbers which appear in the vd_version field of a Verdef
 895 // structure.
 896
 897 const int VER_DEF_NONE = 0;
 898 const int VER_DEF_CURRENT = 1;
 899
 900 // Version numbers which appear in the vn_version field of a Verneed
 901 // structure.
 902
 903 const int VER_NEED_NONE = 0;
 904 const int VER_NEED_CURRENT = 1;
 905
 906 // Bit flags which appear in vd_flags of Verdef and vna_flags of
 907 // Vernaux.
 908
 909 const int VER_FLG_BASE = 0x1;
 910 const int VER_FLG_WEAK = 0x2;
 911 const int VER_FLG_INFO = 0x4;
 912
 913 // Special constants found in the SHT_GNU_versym entries.
 914
 915 const int VER_NDX_LOCAL = 0;
 916 const int VER_NDX_GLOBAL = 1;
 917
 918 // A SHT_GNU_versym section holds 16-bit words.  This bit is set if
 919 // the symbol is hidden and can only be seen when referenced using an
 920 // explicit version number.  This is a GNU extension.
 921
 922 const int VERSYM_HIDDEN = 0x8000;
 923
 924 // This is the mask for the rest of the data in a word read from a
 925 // SHT_GNU_versym section.
 926
 927 const int VERSYM_VERSION = 0x7fff;
 928
 929 // Note descriptor type codes for notes in a non-core file with an
 930 // empty name.
 931
 932 enum
 933 {
 934   // A version string.
 935   NT_VERSION = 1,
 936   // An architecture string.
 937   NT_ARCH = 2
 938 };
 939
 940 // Note descriptor type codes for notes in a non-core file with the
 941 // name "GNU".
 942
 943 enum
 944 {
 945   // The minimum ABI level.  This is used by the dynamic linker to
 946   // describe the minimal kernel version on which a shared library may
 947   // be used.  Th value should be four words.  Word 0 is an OS
 948   // descriptor (see below).  Word 1 is the major version of the ABI.
 949   // Word 2 is the minor version.  Word 3 is the subminor version.
 950   NT_GNU_ABI_TAG = 1,
 951   // Hardware capabilities information.  Word 0 is the number of
 952   // entries.  Word 1 is a bitmask of enabled entries.  The rest of
 953   // the descriptor is a series of entries, where each entry is a
 954   // single byte followed by a nul terminated string.  The byte gives
 955   // the bit number to test if enabled in the bitmask.
 956   NT_GNU_HWCAP = 2,
 957   // The build ID as set by the linker's --build-id option.  The
 958   // format of the descriptor depends on the build ID style.
 959   NT_GNU_BUILD_ID = 3,
 960   // The version of gold used to link.  Th descriptor is just a
 961   // string.
 962   NT_GNU_GOLD_VERSION = 4
 963 };
 964
 965 // The OS values which may appear in word 0 of a NT_GNU_ABI_TAG note.
 966
 967 enum
 968 {
 969   ELF_NOTE_OS_LINUX = 0,
 970   ELF_NOTE_OS_GNU = 1,
 971   ELF_NOTE_OS_SOLARIS2 = 2,
 972   ELF_NOTE_OS_FREEBSD = 3,
 973   ELF_NOTE_OS_NETBSD = 4,
 974   ELF_NOTE_OS_SYLLABLE = 5
 975 };
 976
 977 } // End namespace elfcpp.
 978
 979 // Include internal details after defining the types.
 980 #include "elfcpp_internal.h"
 981
 982 namespace elfcpp
 983 {
 984
 985 // The offset of the ELF file header in the ELF file.
 986
 987 const int file_header_offset = 0;
 988
 989 // ELF structure sizes.
 990
 991 template<int size>
 992 struct Elf_sizes
 993 {
 994   // Size of ELF file header.
 995   static const int ehdr_size = sizeof(internal::Ehdr_data<size>);
 996   // Size of ELF segment header.
 997   static const int phdr_size = sizeof(internal::Phdr_data<size>);
 998   // Size of ELF section header.
 999   static const int shdr_size = sizeof(internal::Shdr_data<size>);
1000   // Size of ELF symbol table entry.
1001   static const int sym_size = sizeof(internal::Sym_data<size>);
1002   // Sizes of ELF reloc entries.
1003   static const int rel_size = sizeof(internal::Rel_data<size>);
1004   static const int rela_size = sizeof(internal::Rela_data<size>);
1005   // Size of ELF dynamic entry.
1006   static const int dyn_size = sizeof(internal::Dyn_data<size>);
1007   // Size of ELF version structures.
1008   static const int verdef_size = sizeof(internal::Verdef_data);
1009   static const int verdaux_size = sizeof(internal::Verdaux_data);
1010   static const int verneed_size = sizeof(internal::Verneed_data);
1011   static const int vernaux_size = sizeof(internal::Vernaux_data);
1012 };
1013
1014 // Accessor class for the ELF file header.
1015
1016 template<int size, bool big_endian>
1017 class Ehdr
1018 {
1019  public:
1020   Ehdr(const unsigned char* p)
1021     : p_(reinterpret_cast<const internal::Ehdr_data<size>*>(p))
1022   { }
1023
1024   template<typename File>
1025   Ehdr(File* file, typename File::Location loc)
1026     : p_(reinterpret_cast<const internal::Ehdr_data<size>*>(
1027            file->view(loc.file_offset, loc.data_size).data()))
1028   { }
1029
1030   const unsigned char*
1031   get_e_ident() const
1032   { return this->p_->e_ident; }
1033
1034   Elf_Half
1035   get_e_type() const
1036   { return Convert<16, big_endian>::convert_host(this->p_->e_type); }
1037
1038   Elf_Half
1039   get_e_machine() const
1040   { return Convert<16, big_endian>::convert_host(this->p_->e_machine); }
1041
1042   Elf_Word
1043   get_e_version() const
1044   { return Convert<32, big_endian>::convert_host(this->p_->e_version); }
1045
1046   typename Elf_types<size>::Elf_Addr
1047   get_e_entry() const
1048   { return Convert<size, big_endian>::convert_host(this->p_->e_entry); }
1049
1050   typename Elf_types<size>::Elf_Off
1051   get_e_phoff() const
1052   { return Convert<size, big_endian>::convert_host(this->p_->e_phoff); }
1053
1054   typename Elf_types<size>::Elf_Off
1055   get_e_shoff() const
1056   { return Convert<size, big_endian>::convert_host(this->p_->e_shoff); }
1057
1058   Elf_Word
1059   get_e_flags() const
1060   { return Convert<32, big_endian>::convert_host(this->p_->e_flags); }
1061
1062   Elf_Half
1063   get_e_ehsize() const
1064   { return Convert<16, big_endian>::convert_host(this->p_->e_ehsize); }
1065
1066   Elf_Half
1067   get_e_phentsize() const
1068   { return Convert<16, big_endian>::convert_host(this->p_->e_phentsize); }
1069
1070   Elf_Half
1071   get_e_phnum() const
1072   { return Convert<16, big_endian>::convert_host(this->p_->e_phnum); }
1073
1074   Elf_Half
1075   get_e_shentsize() const
1076   { return Convert<16, big_endian>::convert_host(this->p_->e_shentsize); }
1077
1078   Elf_Half
1079   get_e_shnum() const
1080   { return Convert<16, big_endian>::convert_host(this->p_->e_shnum); }
1081
1082   Elf_Half
1083   get_e_shstrndx() const
1084   { return Convert<16, big_endian>::convert_host(this->p_->e_shstrndx); }
1085
1086  private:
1087   const internal::Ehdr_data<size>* p_;
1088 };
1089
1090 // Write class for the ELF file header.
1091
1092 template<int size, bool big_endian>
1093 class Ehdr_write
1094 {
1095  public:
1096   Ehdr_write(unsigned char* p)
1097     : p_(reinterpret_cast<internal::Ehdr_data<size>*>(p))
1098   { }
1099
1100   void
1101   put_e_ident(const unsigned char v[EI_NIDENT]) const
1102   { memcpy(this->p_->e_ident, v, EI_NIDENT); }
1103
1104   void
1105   put_e_type(Elf_Half v)
1106   { this->p_->e_type = Convert<16, big_endian>::convert_host(v); }
1107
1108   void
1109   put_e_machine(Elf_Half v)
1110   { this->p_->e_machine = Convert<16, big_endian>::convert_host(v); }
1111
1112   void
1113   put_e_version(Elf_Word v)
1114   { this->p_->e_version = Convert<32, big_endian>::convert_host(v); }
1115
1116   void
1117   put_e_entry(typename Elf_types<size>::Elf_Addr v)
1118   { this->p_->e_entry = Convert<size, big_endian>::convert_host(v); }
1119
1120   void
1121   put_e_phoff(typename Elf_types<size>::Elf_Off v)
1122   { this->p_->e_phoff = Convert<size, big_endian>::convert_host(v); }
1123
1124   void
1125   put_e_shoff(typename Elf_types<size>::Elf_Off v)
1126   { this->p_->e_shoff = Convert<size, big_endian>::convert_host(v); }
1127
1128   void
1129   put_e_flags(Elf_Word v)
1130   { this->p_->e_flags = Convert<32, big_endian>::convert_host(v); }
1131
1132   void
1133   put_e_ehsize(Elf_Half v)
1134   { this->p_->e_ehsize = Convert<16, big_endian>::convert_host(v); }
1135
1136   void
1137   put_e_phentsize(Elf_Half v)
1138   { this->p_->e_phentsize = Convert<16, big_endian>::convert_host(v); }
1139
1140   void
1141   put_e_phnum(Elf_Half v)
1142   { this->p_->e_phnum = Convert<16, big_endian>::convert_host(v); }
1143
1144   void
1145   put_e_shentsize(Elf_Half v)
1146   { this->p_->e_shentsize = Convert<16, big_endian>::convert_host(v); }
1147
1148   void
1149   put_e_shnum(Elf_Half v)
1150   { this->p_->e_shnum = Convert<16, big_endian>::convert_host(v); }
1151
1152   void
1153   put_e_shstrndx(Elf_Half v)
1154   { this->p_->e_shstrndx = Convert<16, big_endian>::convert_host(v); }
1155
1156  private:
1157   internal::Ehdr_data<size>* p_;
1158 };
1159
1160 // Accessor class for an ELF section header.
1161
1162 template<int size, bool big_endian>
1163 class Shdr
1164 {
1165  public:
1166   Shdr(const unsigned char* p)
1167     : p_(reinterpret_cast<const internal::Shdr_data<size>*>(p))
1168   { }
1169
1170   template<typename File>
1171   Shdr(File* file, typename File::Location loc)
1172     : p_(reinterpret_cast<const internal::Shdr_data<size>*>(
1173            file->view(loc.file_offset, loc.data_size).data()))
1174   { }
1175
1176   Elf_Word
1177   get_sh_name() const
1178   { return Convert<32, big_endian>::convert_host(this->p_->sh_name); }
1179
1180   Elf_Word
1181   get_sh_type() const
1182   { return Convert<32, big_endian>::convert_host(this->p_->sh_type); }
1183
1184   typename Elf_types<size>::Elf_WXword
1185   get_sh_flags() const
1186   { return Convert<size, big_endian>::convert_host(this->p_->sh_flags); }
1187
1188   typename Elf_types<size>::Elf_Addr
1189   get_sh_addr() const
1190   { return Convert<size, big_endian>::convert_host(this->p_->sh_addr); }
1191
1192   typename Elf_types<size>::Elf_Off
1193   get_sh_offset() const
1194   { return Convert<size, big_endian>::convert_host(this->p_->sh_offset); }
1195
1196   typename Elf_types<size>::Elf_WXword
1197   get_sh_size() const
1198   { return Convert<size, big_endian>::convert_host(this->p_->sh_size); }
1199
1200   Elf_Word
1201   get_sh_link() const
1202   { return Convert<32, big_endian>::convert_host(this->p_->sh_link); }
1203
1204   Elf_Word
1205   get_sh_info() const
1206   { return Convert<32, big_endian>::convert_host(this->p_->sh_info); }
1207
1208   typename Elf_types<size>::Elf_WXword
1209   get_sh_addralign() const
1210   { return
1211       Convert<size, big_endian>::convert_host(this->p_->sh_addralign); }
1212
1213   typename Elf_types<size>::Elf_WXword
1214   get_sh_entsize() const
1215   { return Convert<size, big_endian>::convert_host(this->p_->sh_entsize); }
1216
1217  private:
1218   const internal::Shdr_data<size>* p_;
1219 };
1220
1221 // Write class for an ELF section header.
1222
1223 template<int size, bool big_endian>
1224 class Shdr_write
1225 {
1226  public:
1227   Shdr_write(unsigned char* p)
1228     : p_(reinterpret_cast<internal::Shdr_data<size>*>(p))
1229   { }
1230
1231   void
1232   put_sh_name(Elf_Word v)
1233   { this->p_->sh_name = Convert<32, big_endian>::convert_host(v); }
1234
1235   void
1236   put_sh_type(Elf_Word v)
1237   { this->p_->sh_type = Convert<32, big_endian>::convert_host(v); }
1238
1239   void
1240   put_sh_flags(typename Elf_types<size>::Elf_WXword v)
1241   { this->p_->sh_flags = Convert<size, big_endian>::convert_host(v); }
1242
1243   void
1244   put_sh_addr(typename Elf_types<size>::Elf_Addr v)
1245   { this->p_->sh_addr = Convert<size, big_endian>::convert_host(v); }
1246
1247   void
1248   put_sh_offset(typename Elf_types<size>::Elf_Off v)
1249   { this->p_->sh_offset = Convert<size, big_endian>::convert_host(v); }
1250
1251   void
1252   put_sh_size(typename Elf_types<size>::Elf_WXword v)
1253   { this->p_->sh_size = Convert<size, big_endian>::convert_host(v); }
1254
1255   void
1256   put_sh_link(Elf_Word v)
1257   { this->p_->sh_link = Convert<32, big_endian>::convert_host(v); }
1258
1259   void
1260   put_sh_info(Elf_Word v)
1261   { this->p_->sh_info = Convert<32, big_endian>::convert_host(v); }
1262
1263   void
1264   put_sh_addralign(typename Elf_types<size>::Elf_WXword v)
1265   { this->p_->sh_addralign = Convert<size, big_endian>::convert_host(v); }
1266
1267   void
1268   put_sh_entsize(typename Elf_types<size>::Elf_WXword v)
1269   { this->p_->sh_entsize = Convert<size, big_endian>::convert_host(v); }
1270
1271  private:
1272   internal::Shdr_data<size>* p_;
1273 };
1274
1275 // Accessor class for an ELF segment header.
1276
1277 template<int size, bool big_endian>
1278 class Phdr
1279 {
1280  public:
1281   Phdr(const unsigned char* p)
1282     : p_(reinterpret_cast<const internal::Phdr_data<size>*>(p))
1283   { }
1284
1285   template<typename File>
1286   Phdr(File* file, typename File::Location loc)
1287     : p_(reinterpret_cast<internal::Phdr_data<size>*>(
1288            file->view(loc.file_offset, loc.data_size).data()))
1289   { }
1290
1291   Elf_Word
1292   get_p_type() const
1293   { return Convert<32, big_endian>::convert_host(this->p_->p_type); }
1294
1295   typename Elf_types<size>::Elf_Off
1296   get_p_offset() const
1297   { return Convert<size, big_endian>::convert_host(this->p_->p_offset); }
1298
1299   typename Elf_types<size>::Elf_Addr
1300   get_p_vaddr() const
1301   { return Convert<size, big_endian>::convert_host(this->p_->p_vaddr); }
1302
1303   typename Elf_types<size>::Elf_Addr
1304   get_p_paddr() const
1305   { return Convert<size, big_endian>::convert_host(this->p_->p_paddr); }
1306
1307   typename Elf_types<size>::Elf_WXword
1308   get_p_filesz() const
1309   { return Convert<size, big_endian>::convert_host(this->p_->p_filesz); }
1310
1311   typename Elf_types<size>::Elf_WXword
1312   get_p_memsz() const
1313   { return Convert<size, big_endian>::convert_host(this->p_->p_memsz); }
1314
1315   Elf_Word
1316   get_p_flags() const
1317   { return Convert<32, big_endian>::convert_host(this->p_->p_flags); }
1318
1319   typename Elf_types<size>::Elf_WXword
1320   get_p_align() const
1321   { return Convert<size, big_endian>::convert_host(this->p_->p_align); }
1322
1323  private:
1324   const internal::Phdr_data<size>* p_;
1325 };
1326
1327 // Write class for an ELF segment header.
1328
1329 template<int size, bool big_endian>
1330 class Phdr_write
1331 {
1332  public:
1333   Phdr_write(unsigned char* p)
1334     : p_(reinterpret_cast<internal::Phdr_data<size>*>(p))
1335   { }
1336
1337   void
1338   put_p_type(Elf_Word v)
1339   { this->p_->p_type = Convert<32, big_endian>::convert_host(v); }
1340
1341   void
1342   put_p_offset(typename Elf_types<size>::Elf_Off v)
1343   { this->p_->p_offset = Convert<size, big_endian>::convert_host(v); }
1344
1345   void
1346   put_p_vaddr(typename Elf_types<size>::Elf_Addr v)
1347   { this->p_->p_vaddr = Convert<size, big_endian>::convert_host(v); }
1348
1349   void
1350   put_p_paddr(typename Elf_types<size>::Elf_Addr v)
1351   { this->p_->p_paddr = Convert<size, big_endian>::convert_host(v); }
1352
1353   void
1354   put_p_filesz(typename Elf_types<size>::Elf_WXword v)
1355   { this->p_->p_filesz = Convert<size, big_endian>::convert_host(v); }
1356
1357   void
1358   put_p_memsz(typename Elf_types<size>::Elf_WXword v)
1359   { this->p_->p_memsz = Convert<size, big_endian>::convert_host(v); }
1360
1361   void
1362   put_p_flags(Elf_Word v)
1363   { this->p_->p_flags = Convert<32, big_endian>::convert_host(v); }
1364
1365   void
1366   put_p_align(typename Elf_types<size>::Elf_WXword v)
1367   { this->p_->p_align = Convert<size, big_endian>::convert_host(v); }
1368
1369  private:
1370   internal::Phdr_data<size>* p_;
1371 };
1372
1373 // Accessor class for an ELF symbol table entry.
1374
1375 template<int size, bool big_endian>
1376 class Sym
1377 {
1378  public:
1379   Sym(const unsigned char* p)
1380     : p_(reinterpret_cast<const internal::Sym_data<size>*>(p))
1381   { }
1382
1383   template<typename File>
1384   Sym(File* file, typename File::Location loc)
1385     : p_(reinterpret_cast<const internal::Sym_data<size>*>(
1386            file->view(loc.file_offset, loc.data_size).data()))
1387   { }
1388
1389   Elf_Word
1390   get_st_name() const
1391   { return Convert<32, big_endian>::convert_host(this->p_->st_name); }
1392
1393   typename Elf_types<size>::Elf_Addr
1394   get_st_value() const
1395   { return Convert<size, big_endian>::convert_host(this->p_->st_value); }
1396
1397   typename Elf_types<size>::Elf_WXword
1398   get_st_size() const
1399   { return Convert<size, big_endian>::convert_host(this->p_->st_size); }
1400
1401   unsigned char
1402   get_st_info() const
1403   { return this->p_->st_info; }
1404
1405   STB
1406   get_st_bind() const
1407   { return elf_st_bind(this->get_st_info()); }
1408
1409   STT
1410   get_st_type() const
1411   { return elf_st_type(this->get_st_info()); }
1412
1413   unsigned char
1414   get_st_other() const
1415   { return this->p_->st_other; }
1416
1417   STV
1418   get_st_visibility() const
1419   { return elf_st_visibility(this->get_st_other()); }
1420
1421   unsigned char
1422   get_st_nonvis() const
1423   { return elf_st_nonvis(this->get_st_other()); }
1424
1425   Elf_Half
1426   get_st_shndx() const
1427   { return Convert<16, big_endian>::convert_host(this->p_->st_shndx); }
1428
1429  private:
1430   const internal::Sym_data<size>* p_;
1431 };
1432
1433 // Writer class for an ELF symbol table entry.
1434
1435 template<int size, bool big_endian>
1436 class Sym_write
1437 {
1438  public:
1439   Sym_write(unsigned char* p)
1440     : p_(reinterpret_cast<internal::Sym_data<size>*>(p))
1441   { }
1442
1443   void
1444   put_st_name(Elf_Word v)
1445   { this->p_->st_name = Convert<32, big_endian>::convert_host(v); }
1446
1447   void
1448   put_st_value(typename Elf_types<size>::Elf_Addr v)
1449   { this->p_->st_value = Convert<size, big_endian>::convert_host(v); }
1450
1451   void
1452   put_st_size(typename Elf_types<size>::Elf_WXword v)
1453   { this->p_->st_size = Convert<size, big_endian>::convert_host(v); }
1454
1455   void
1456   put_st_info(unsigned char v)
1457   { this->p_->st_info = v; }
1458
1459   void
1460   put_st_info(STB bind, STT type)
1461   { this->p_->st_info = elf_st_info(bind, type); }
1462
1463   void
1464   put_st_other(unsigned char v)
1465   { this->p_->st_other = v; }
1466
1467   void
1468   put_st_other(STV vis, unsigned char nonvis)
1469   { this->p_->st_other = elf_st_other(vis, nonvis); }
1470
1471   void
1472   put_st_shndx(Elf_Half v)
1473   { this->p_->st_shndx = Convert<16, big_endian>::convert_host(v); }
1474
1475   Sym<size, big_endian>
1476   sym()
1477   { return Sym<size, big_endian>(reinterpret_cast<unsigned char*>(this->p_)); }
1478
1479  private:
1480   internal::Sym_data<size>* p_;
1481 };
1482
1483 // Accessor classes for an ELF REL relocation entry.
1484
1485 template<int size, bool big_endian>
1486 class Rel
1487 {
1488  public:
1489   Rel(const unsigned char* p)
1490     : p_(reinterpret_cast<const internal::Rel_data<size>*>(p))
1491   { }
1492
1493   template<typename File>
1494   Rel(File* file, typename File::Location loc)
1495     : p_(reinterpret_cast<const internal::Rel_data<size>*>(
1496            file->view(loc.file_offset, loc.data_size).data()))
1497   { }
1498
1499   typename Elf_types<size>::Elf_Addr
1500   get_r_offset() const
1501   { return Convert<size, big_endian>::convert_host(this->p_->r_offset); }
1502
1503   typename Elf_types<size>::Elf_WXword
1504   get_r_info() const
1505   { return Convert<size, big_endian>::convert_host(this->p_->r_info); }
1506
1507  private:
1508   const internal::Rel_data<size>* p_;
1509 };
1510
1511 // Writer class for an ELF Rel relocation.
1512
1513 template<int size, bool big_endian>
1514 class Rel_write
1515 {
1516  public:
1517   Rel_write(unsigned char* p)
1518     : p_(reinterpret_cast<internal::Rel_data<size>*>(p))
1519   { }
1520
1521   void
1522   put_r_offset(typename Elf_types<size>::Elf_Addr v)
1523   { this->p_->r_offset = Convert<size, big_endian>::convert_host(v); }
1524
1525   void
1526   put_r_info(typename Elf_types<size>::Elf_WXword v)
1527   { this->p_->r_info = Convert<size, big_endian>::convert_host(v); }
1528
1529  private:
1530   internal::Rel_data<size>* p_;
1531 };
1532
1533 // Accessor class for an ELF Rela relocation.
1534
1535 template<int size, bool big_endian>
1536 class Rela
1537 {
1538  public:
1539   Rela(const unsigned char* p)
1540     : p_(reinterpret_cast<const internal::Rela_data<size>*>(p))
1541   { }
1542
1543   template<typename File>
1544   Rela(File* file, typename File::Location loc)
1545     : p_(reinterpret_cast<const internal::Rela_data<size>*>(
1546            file->view(loc.file_offset, loc.data_size).data()))
1547   { }
1548
1549   typename Elf_types<size>::Elf_Addr
1550   get_r_offset() const
1551   { return Convert<size, big_endian>::convert_host(this->p_->r_offset); }
1552
1553   typename Elf_types<size>::Elf_WXword
1554   get_r_info() const
1555   { return Convert<size, big_endian>::convert_host(this->p_->r_info); }
1556
1557   typename Elf_types<size>::Elf_Swxword
1558   get_r_addend() const
1559   { return Convert<size, big_endian>::convert_host(this->p_->r_addend); }
1560
1561  private:
1562   const internal::Rela_data<size>* p_;
1563 };
1564
1565 // Writer class for an ELF Rela relocation.
1566
1567 template<int size, bool big_endian>
1568 class Rela_write
1569 {
1570  public:
1571   Rela_write(unsigned char* p)
1572     : p_(reinterpret_cast<internal::Rela_data<size>*>(p))
1573   { }
1574
1575   void
1576   put_r_offset(typename Elf_types<size>::Elf_Addr v)
1577   { this->p_->r_offset = Convert<size, big_endian>::convert_host(v); }
1578
1579   void
1580   put_r_info(typename Elf_types<size>::Elf_WXword v)
1581   { this->p_->r_info = Convert<size, big_endian>::convert_host(v); }
1582
1583   void
1584   put_r_addend(typename Elf_types<size>::Elf_Swxword v)
1585   { this->p_->r_addend = Convert<size, big_endian>::convert_host(v); }
1586
1587  private:
1588   internal::Rela_data<size>* p_;
1589 };
1590
1591 // Accessor classes for entries in the ELF SHT_DYNAMIC section aka
1592 // PT_DYNAMIC segment.
1593
1594 template<int size, bool big_endian>
1595 class Dyn
1596 {
1597  public:
1598   Dyn(const unsigned char* p)
1599     : p_(reinterpret_cast<const internal::Dyn_data<size>*>(p))
1600   { }
1601
1602   template<typename File>
1603   Dyn(File* file, typename File::Location loc)
1604     : p_(reinterpret_cast<const internal::Dyn_data<size>*>(
1605            file->view(loc.file_offset, loc.data_size).data()))
1606   { }
1607
1608   typename Elf_types<size>::Elf_Swxword
1609   get_d_tag() const
1610   { return Convert<size, big_endian>::convert_host(this->p_->d_tag); }
1611
1612   typename Elf_types<size>::Elf_WXword
1613   get_d_val() const
1614   { return Convert<size, big_endian>::convert_host(this->p_->d_val); }
1615
1616   typename Elf_types<size>::Elf_Addr
1617   get_d_ptr() const
1618   { return Convert<size, big_endian>::convert_host(this->p_->d_val); }
1619
1620  private:
1621   const internal::Dyn_data<size>* p_;
1622 };
1623
1624 // Write class for an entry in the SHT_DYNAMIC section.
1625
1626 template<int size, bool big_endian>
1627 class Dyn_write
1628 {
1629  public:
1630   Dyn_write(unsigned char* p)
1631     : p_(reinterpret_cast<internal::Dyn_data<size>*>(p))
1632   { }
1633
1634   void
1635   put_d_tag(typename Elf_types<size>::Elf_Swxword v)
1636   { this->p_->d_tag = Convert<size, big_endian>::convert_host(v); }
1637
1638   void
1639   put_d_val(typename Elf_types<size>::Elf_WXword v)
1640   { this->p_->d_val = Convert<size, big_endian>::convert_host(v); }
1641
1642   void
1643   put_d_ptr(typename Elf_types<size>::Elf_Addr v)
1644   { this->p_->d_val = Convert<size, big_endian>::convert_host(v); }
1645
1646  private:
1647   internal::Dyn_data<size>* p_;
1648 };
1649
1650 // Accessor classes for entries in the ELF SHT_GNU_verdef section.
1651
1652 template<int size, bool big_endian>
1653 class Verdef
1654 {
1655  public:
1656   Verdef(const unsigned char* p)
1657     : p_(reinterpret_cast<const internal::Verdef_data*>(p))
1658   { }
1659
1660   template<typename File>
1661   Verdef(File* file, typename File::Location loc)
1662     : p_(reinterpret_cast<const internal::Verdef_data*>(
1663            file->view(loc.file_offset, loc.data_size).data()))
1664   { }
1665
1666   Elf_Half
1667   get_vd_version() const
1668   { return Convert<16, big_endian>::convert_host(this->p_->vd_version); }
1669
1670   Elf_Half
1671   get_vd_flags() const
1672   { return Convert<16, big_endian>::convert_host(this->p_->vd_flags); }
1673
1674   Elf_Half
1675   get_vd_ndx() const
1676   { return Convert<16, big_endian>::convert_host(this->p_->vd_ndx); }
1677
1678   Elf_Half
1679   get_vd_cnt() const
1680   { return Convert<16, big_endian>::convert_host(this->p_->vd_cnt); }
1681
1682   Elf_Word
1683   get_vd_hash() const
1684   { return Convert<32, big_endian>::convert_host(this->p_->vd_hash); }
1685
1686   Elf_Word
1687   get_vd_aux() const
1688   { return Convert<32, big_endian>::convert_host(this->p_->vd_aux); }
1689
1690   Elf_Word
1691   get_vd_next() const
1692   { return Convert<32, big_endian>::convert_host(this->p_->vd_next); }
1693
1694  private:
1695   const internal::Verdef_data* p_;
1696 };
1697
1698 template<int size, bool big_endian>
1699 class Verdef_write
1700 {
1701  public:
1702   Verdef_write(unsigned char* p)
1703     : p_(reinterpret_cast<internal::Verdef_data*>(p))
1704   { }
1705
1706   void
1707   set_vd_version(Elf_Half v)
1708   { this->p_->vd_version = Convert<16, big_endian>::convert_host(v); }
1709
1710   void
1711   set_vd_flags(Elf_Half v)
1712   { this->p_->vd_flags = Convert<16, big_endian>::convert_host(v); }
1713
1714   void
1715   set_vd_ndx(Elf_Half v)
1716   { this->p_->vd_ndx = Convert<16, big_endian>::convert_host(v); }
1717
1718   void
1719   set_vd_cnt(Elf_Half v)
1720   { this->p_->vd_cnt = Convert<16, big_endian>::convert_host(v); }
1721
1722   void
1723   set_vd_hash(Elf_Word v)
1724   { this->p_->vd_hash = Convert<32, big_endian>::convert_host(v); }
1725
1726   void
1727   set_vd_aux(Elf_Word v)
1728   { this->p_->vd_aux = Convert<32, big_endian>::convert_host(v); }
1729
1730   void
1731   set_vd_next(Elf_Word v)
1732   { this->p_->vd_next = Convert<32, big_endian>::convert_host(v); }
1733
1734  private:
1735   internal::Verdef_data* p_;
1736 };
1737
1738 // Accessor classes for auxiliary entries in the ELF SHT_GNU_verdef
1739 // section.
1740
1741 template<int size, bool big_endian>
1742 class Verdaux
1743 {
1744  public:
1745   Verdaux(const unsigned char* p)
1746     : p_(reinterpret_cast<const internal::Verdaux_data*>(p))
1747   { }
1748
1749   template<typename File>
1750   Verdaux(File* file, typename File::Location loc)
1751     : p_(reinterpret_cast<const internal::Verdaux_data*>(
1752            file->view(loc.file_offset, loc.data_size).data()))
1753   { }
1754
1755   Elf_Word
1756   get_vda_name() const
1757   { return Convert<32, big_endian>::convert_host(this->p_->vda_name); }
1758
1759   Elf_Word
1760   get_vda_next() const
1761   { return Convert<32, big_endian>::convert_host(this->p_->vda_next); }
1762
1763  private:
1764   const internal::Verdaux_data* p_;
1765 };
1766
1767 template<int size, bool big_endian>
1768 class Verdaux_write
1769 {
1770  public:
1771   Verdaux_write(unsigned char* p)
1772     : p_(reinterpret_cast<internal::Verdaux_data*>(p))
1773   { }
1774
1775   void
1776   set_vda_name(Elf_Word v)
1777   { this->p_->vda_name = Convert<32, big_endian>::convert_host(v); }
1778
1779   void
1780   set_vda_next(Elf_Word v)
1781   { this->p_->vda_next = Convert<32, big_endian>::convert_host(v); }
1782
1783  private:
1784   internal::Verdaux_data* p_;
1785 };
1786
1787 // Accessor classes for entries in the ELF SHT_GNU_verneed section.
1788
1789 template<int size, bool big_endian>
1790 class Verneed
1791 {
1792  public:
1793   Verneed(const unsigned char* p)
1794     : p_(reinterpret_cast<const internal::Verneed_data*>(p))
1795   { }
1796
1797   template<typename File>
1798   Verneed(File* file, typename File::Location loc)
1799     : p_(reinterpret_cast<const internal::Verneed_data*>(
1800            file->view(loc.file_offset, loc.data_size).data()))
1801   { }
1802
1803   Elf_Half
1804   get_vn_version() const
1805   { return Convert<16, big_endian>::convert_host(this->p_->vn_version); }
1806
1807   Elf_Half
1808   get_vn_cnt() const
1809   { return Convert<16, big_endian>::convert_host(this->p_->vn_cnt); }
1810
1811   Elf_Word
1812   get_vn_file() const
1813   { return Convert<32, big_endian>::convert_host(this->p_->vn_file); }
1814
1815   Elf_Word
1816   get_vn_aux() const
1817   { return Convert<32, big_endian>::convert_host(this->p_->vn_aux); }
1818
1819   Elf_Word
1820   get_vn_next() const
1821   { return Convert<32, big_endian>::convert_host(this->p_->vn_next); }
1822
1823  private:
1824   const internal::Verneed_data* p_;
1825 };
1826
1827 template<int size, bool big_endian>
1828 class Verneed_write
1829 {
1830  public:
1831   Verneed_write(unsigned char* p)
1832     : p_(reinterpret_cast<internal::Verneed_data*>(p))
1833   { }
1834
1835   void
1836   set_vn_version(Elf_Half v)
1837   { this->p_->vn_version = Convert<16, big_endian>::convert_host(v); }
1838
1839   void
1840   set_vn_cnt(Elf_Half v)
1841   { this->p_->vn_cnt = Convert<16, big_endian>::convert_host(v); }
1842
1843   void
1844   set_vn_file(Elf_Word v)
1845   { this->p_->vn_file = Convert<32, big_endian>::convert_host(v); }
1846
1847   void
1848   set_vn_aux(Elf_Word v)
1849   { this->p_->vn_aux = Convert<32, big_endian>::convert_host(v); }
1850
1851   void
1852   set_vn_next(Elf_Word v)
1853   { this->p_->vn_next = Convert<32, big_endian>::convert_host(v); }
1854
1855  private:
1856   internal::Verneed_data* p_;
1857 };
1858
1859 // Accessor classes for auxiliary entries in the ELF SHT_GNU_verneed
1860 // section.
1861
1862 template<int size, bool big_endian>
1863 class Vernaux
1864 {
1865  public:
1866   Vernaux(const unsigned char* p)
1867     : p_(reinterpret_cast<const internal::Vernaux_data*>(p))
1868   { }
1869
1870   template<typename File>
1871   Vernaux(File* file, typename File::Location loc)
1872     : p_(reinterpret_cast<const internal::Vernaux_data*>(
1873            file->view(loc.file_offset, loc.data_size).data()))
1874   { }
1875
1876   Elf_Word
1877   get_vna_hash() const
1878   { return Convert<32, big_endian>::convert_host(this->p_->vna_hash); }
1879
1880   Elf_Half
1881   get_vna_flags() const
1882   { return Convert<16, big_endian>::convert_host(this->p_->vna_flags); }
1883
1884   Elf_Half
1885   get_vna_other() const
1886   { return Convert<16, big_endian>::convert_host(this->p_->vna_other); }
1887
1888   Elf_Word
1889   get_vna_name() const
1890   { return Convert<32, big_endian>::convert_host(this->p_->vna_name); }
1891
1892   Elf_Word
1893   get_vna_next() const
1894   { return Convert<32, big_endian>::convert_host(this->p_->vna_next); }
1895
1896  private:
1897   const internal::Vernaux_data* p_;
1898 };
1899
1900 template<int size, bool big_endian>
1901 class Vernaux_write
1902 {
1903  public:
1904   Vernaux_write(unsigned char* p)
1905     : p_(reinterpret_cast<internal::Vernaux_data*>(p))
1906   { }
1907
1908   void
1909   set_vna_hash(Elf_Word v)
1910   { this->p_->vna_hash = Convert<32, big_endian>::convert_host(v); }
1911
1912   void
1913   set_vna_flags(Elf_Half v)
1914   { this->p_->vna_flags = Convert<16, big_endian>::convert_host(v); }
1915
1916   void
1917   set_vna_other(Elf_Half v)
1918   { this->p_->vna_other = Convert<16, big_endian>::convert_host(v); }
1919
1920   void
1921   set_vna_name(Elf_Word v)
1922   { this->p_->vna_name = Convert<32, big_endian>::convert_host(v); }
1923
1924   void
1925   set_vna_next(Elf_Word v)
1926   { this->p_->vna_next = Convert<32, big_endian>::convert_host(v); }
1927
1928  private:
1929   internal::Vernaux_data* p_;
1930 };
1931
1932 } // End namespace elfcpp.
1933
1934 #endif // !defined(ELFPCP_H)