elfcpp/elfcpp.h

   1 // elfcpp.h -- main header file for elfcpp    -*- C++ -*-
   2
   3 // Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
   4 // Written by Ian Lance Taylor <iant@google.com>.
   5
   6 // This file is part of elfcpp.
   7
   8 // This program is free software; you can redistribute it and/or
   9 // modify it under the terms of the GNU Library General Public License
  10 // as published by the Free Software Foundation; either version 2, or
  11 // (at your option) any later version.
  12
  13 // In addition to the permissions in the GNU Library General Public
  14 // License, the Free Software Foundation gives you unlimited
  15 // permission to link the compiled version of this file into
  16 // combinations with other programs, and to distribute those
  17 // combinations without any restriction coming from the use of this
  18 // file.  (The Library Public License restrictions do apply in other
  19 // respects; for example, they cover modification of the file, and
  20 // distribution when not linked into a combined executable.)
  21
  22 // This program is distributed in the hope that it will be useful, but
  23 // WITHOUT ANY WARRANTY; without even the implied warranty of
  24 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  25 // Library General Public License for more details.
  26
  27 // You should have received a copy of the GNU Library General Public
  28 // License along with this program; if not, write to the Free Software
  29 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
  30 // 02110-1301, USA.
  31
  32 // This is the external interface for elfcpp.
  33
  34 #ifndef ELFCPP_H
  35 #define ELFCPP_H
  36
  37 #include "elfcpp_swap.h"
  38
  39 #include <stdint.h>
  40
  41 namespace elfcpp
  42 {
  43
  44 // Basic ELF types.
  45
  46 // These types are always the same size.
  47
  48 typedef uint16_t Elf_Half;
  49 typedef uint32_t Elf_Word;
  50 typedef int32_t Elf_Sword;
  51 typedef uint64_t Elf_Xword;
  52 typedef int64_t Elf_Sxword;
  53
  54 // These types vary in size depending on the ELF file class.  The
  55 // template parameter should be 32 or 64.
  56
  57 template<int size>
  58 struct Elf_types;
  59
  60 template<>
  61 struct Elf_types<32>
  62 {
  63   typedef uint32_t Elf_Addr;
  64   typedef uint32_t Elf_Off;
  65   typedef uint32_t Elf_WXword;
  66   typedef int32_t Elf_Swxword;
  67 };
  68
  69 template<>
  70 struct Elf_types<64>
  71 {
  72   typedef uint64_t Elf_Addr;
  73   typedef uint64_t Elf_Off;
  74   typedef uint64_t Elf_WXword;
  75   typedef int64_t Elf_Swxword;
  76 };
  77
  78 // Offsets within the Ehdr e_ident field.
  79
  80 const int EI_MAG0 = 0;
  81 const int EI_MAG1 = 1;
  82 const int EI_MAG2 = 2;
  83 const int EI_MAG3 = 3;
  84 const int EI_CLASS = 4;
  85 const int EI_DATA = 5;
  86 const int EI_VERSION = 6;
  87 const int EI_OSABI = 7;
  88 const int EI_ABIVERSION = 8;
  89 const int EI_PAD = 9;
  90 const int EI_NIDENT = 16;
  91
  92 // The valid values found in Ehdr e_ident[EI_MAG0 through EI_MAG3].
  93
  94 const int ELFMAG0 = 0x7f;
  95 const int ELFMAG1 = 'E';
  96 const int ELFMAG2 = 'L';
  97 const int ELFMAG3 = 'F';
  98
  99 // The valid values found in Ehdr e_ident[EI_CLASS].
 100
 101 enum
 102 {
 103   ELFCLASSNONE = 0,
 104   ELFCLASS32 = 1,
 105   ELFCLASS64 = 2
 106 };
 107
 108 // The valid values found in Ehdr e_ident[EI_DATA].
 109
 110 enum
 111 {
 112   ELFDATANONE = 0,
 113   ELFDATA2LSB = 1,
 114   ELFDATA2MSB = 2
 115 };
 116
 117 // The valid values found in Ehdr e_ident[EI_VERSION] and e_version.
 118
 119 enum
 120 {
 121   EV_NONE = 0,
 122   EV_CURRENT = 1
 123 };
 124
 125 // The valid values found in Ehdr e_ident[EI_OSABI].
 126
 127 enum ELFOSABI
 128 {
 129   ELFOSABI_NONE = 0,
 130   ELFOSABI_HPUX = 1,
 131   ELFOSABI_NETBSD = 2,
 132   // ELFOSABI_LINUX is not listed in the ELF standard.
 133   ELFOSABI_LINUX = 3,
 134   // ELFOSABI_HURD is not listed in the ELF standard.
 135   ELFOSABI_HURD = 4,
 136   ELFOSABI_SOLARIS = 6,
 137   ELFOSABI_AIX = 7,
 138   ELFOSABI_IRIX = 8,
 139   ELFOSABI_FREEBSD = 9,
 140   ELFOSABI_TRU64 = 10,
 141   ELFOSABI_MODESTO = 11,
 142   ELFOSABI_OPENBSD = 12,
 143   ELFOSABI_OPENVMS = 13,
 144   ELFOSABI_NSK = 14,
 145   ELFOSABI_AROS = 15,
 146   // A GNU extension for the ARM.
 147   ELFOSABI_ARM = 97,
 148   // A GNU extension for the MSP.
 149   ELFOSABI_STANDALONE = 255
 150 };
 151
 152 // The valid values found in the Ehdr e_type field.
 153
 154 enum ET
 155 {
 156   ET_NONE = 0,
 157   ET_REL = 1,
 158   ET_EXEC = 2,
 159   ET_DYN = 3,
 160   ET_CORE = 4,
 161   ET_LOOS = 0xfe00,
 162   ET_HIOS = 0xfeff,
 163   ET_LOPROC = 0xff00,
 164   ET_HIPROC = 0xffff
 165 };
 166
 167 // The valid values found in the Ehdr e_machine field.
 168
 169 enum EM
 170 {
 171   EM_NONE = 0,
 172   EM_M32 = 1,
 173   EM_SPARC = 2,
 174   EM_386 = 3,
 175   EM_68K = 4,
 176   EM_88K = 5,
 177   // 6 used to be EM_486
 178   EM_860 = 7,
 179   EM_MIPS = 8,
 180   EM_S370 = 9,
 181   EM_MIPS_RS3_LE = 10,
 182   // 11 was the old Sparc V9 ABI.
 183   // 12 through 14 are reserved.
 184   EM_PARISC = 15,
 185   // 16 is reserved.
 186   // Some old PowerPC object files use 17.
 187   EM_VPP500 = 17,
 188   EM_SPARC32PLUS = 18,
 189   EM_960 = 19,
 190   EM_PPC = 20,
 191   EM_PPC64 = 21,
 192   EM_S390 = 22,
 193   // 23 through 35 are served.
 194   EM_V800 = 36,
 195   EM_FR20 = 37,
 196   EM_RH32 = 38,
 197   EM_RCE = 39,
 198   EM_ARM = 40,
 199   EM_ALPHA = 41,
 200   EM_SH = 42,
 201   EM_SPARCV9 = 43,
 202   EM_TRICORE = 44,
 203   EM_ARC = 45,
 204   EM_H8_300 = 46,
 205   EM_H8_300H = 47,
 206   EM_H8S = 48,
 207   EM_H8_500 = 49,
 208   EM_IA_64 = 50,
 209   EM_MIPS_X = 51,
 210   EM_COLDFIRE = 52,
 211   EM_68HC12 = 53,
 212   EM_MMA = 54,
 213   EM_PCP = 55,
 214   EM_NCPU = 56,
 215   EM_NDR1 = 57,
 216   EM_STARCORE = 58,
 217   EM_ME16 = 59,
 218   EM_ST100 = 60,
 219   EM_TINYJ = 61,
 220   EM_X86_64 = 62,
 221   EM_PDSP = 63,
 222   EM_PDP10 = 64,
 223   EM_PDP11 = 65,
 224   EM_FX66 = 66,
 225   EM_ST9PLUS = 67,
 226   EM_ST7 = 68,
 227   EM_68HC16 = 69,
 228   EM_68HC11 = 70,
 229   EM_68HC08 = 71,
 230   EM_68HC05 = 72,
 231   EM_SVX = 73,
 232   EM_ST19 = 74,
 233   EM_VAX = 75,
 234   EM_CRIS = 76,
 235   EM_JAVELIN = 77,
 236   EM_FIREPATH = 78,
 237   EM_ZSP = 79,
 238   EM_MMIX = 80,
 239   EM_HUANY = 81,
 240   EM_PRISM = 82,
 241   EM_AVR = 83,
 242   EM_FR30 = 84,
 243   EM_D10V = 85,
 244   EM_D30V = 86,
 245   EM_V850 = 87,
 246   EM_M32R = 88,
 247   EM_MN10300 = 89,
 248   EM_MN10200 = 90,
 249   EM_PJ = 91,
 250   EM_OPENRISC = 92,
 251   EM_ARC_A5 = 93,
 252   EM_XTENSA = 94,
 253   EM_VIDEOCORE = 95,
 254   EM_TMM_GPP = 96,
 255   EM_NS32K = 97,
 256   EM_TPC = 98,
 257   // Some old picoJava object files use 99 (EM_PJ is correct).
 258   EM_SNP1K = 99,
 259   EM_ST200 = 100,
 260   EM_IP2K = 101,
 261   EM_MAX = 102,
 262   EM_CR = 103,
 263   EM_F2MC16 = 104,
 264   EM_MSP430 = 105,
 265   EM_BLACKFIN = 106,
 266   EM_SE_C33 = 107,
 267   EM_SEP = 108,
 268   EM_ARCA = 109,
 269   EM_UNICORE = 110,
 270   EM_ALTERA_NIOS2 = 113,
 271   EM_CRX = 114,
 272   // The Morph MT.
 273   EM_MT = 0x2530,
 274   // DLX.
 275   EM_DLX = 0x5aa5,
 276   // FRV.
 277   EM_FRV = 0x5441,
 278   // Infineon Technologies 16-bit microcontroller with C166-V2 core.
 279   EM_X16X = 0x4688,
 280   // Xstorym16
 281   EM_XSTORMY16 = 0xad45,
 282   // Renesas M32C
 283   EM_M32C = 0xfeb0,
 284   // Vitesse IQ2000
 285   EM_IQ2000 = 0xfeba,
 286   // NIOS
 287   EM_NIOS32 = 0xfebb
 288   // Old AVR objects used 0x1057 (EM_AVR is correct).
 289   // Old MSP430 objects used 0x1059 (EM_MSP430 is correct).
 290   // Old FR30 objects used 0x3330 (EM_FR30 is correct).
 291   // Old OpenRISC objects used 0x3426 and 0x8472 (EM_OPENRISC is correct).
 292   // Old D10V objects used 0x7650 (EM_D10V is correct).
 293   // Old D30V objects used 0x7676 (EM_D30V is correct).
 294   // Old IP2X objects used 0x8217 (EM_IP2K is correct).
 295   // Old PowerPC objects used 0x9025 (EM_PPC is correct).
 296   // Old Alpha objects used 0x9026 (EM_ALPHA is correct).
 297   // Old M32R objects used 0x9041 (EM_M32R is correct).
 298   // Old V850 objects used 0x9080 (EM_V850 is correct).
 299   // Old S/390 objects used 0xa390 (EM_S390 is correct).
 300   // Old Xtensa objects used 0xabc7 (EM_XTENSA is correct).
 301   // Old MN10300 objects used 0xbeef (EM_MN10300 is correct).
 302   // Old MN10200 objects used 0xdead (EM_MN10200 is correct).
 303 };
 304
 305 // A special value found in the Ehdr e_phnum field.
 306
 307 enum
 308 {
 309   // Number of program segments stored in sh_info field of first
 310   // section headre.
 311   PN_XNUM = 0xffff
 312 };
 313
 314 // Special section indices.
 315
 316 enum
 317 {
 318   SHN_UNDEF = 0,
 319   SHN_LORESERVE = 0xff00,
 320   SHN_LOPROC = 0xff00,
 321   SHN_HIPROC = 0xff1f,
 322   SHN_LOOS = 0xff20,
 323   SHN_HIOS = 0xff3f,
 324   SHN_ABS = 0xfff1,
 325   SHN_COMMON = 0xfff2,
 326   SHN_XINDEX = 0xffff,
 327   SHN_HIRESERVE = 0xffff,
 328
 329   // Provide for initial and final section ordering in conjunction
 330   // with the SHF_LINK_ORDER and SHF_ORDERED section flags.
 331   SHN_BEFORE = 0xff00,
 332   SHN_AFTER = 0xff01,
 333
 334   // x86_64 specific large common symbol.
 335   SHN_X86_64_LCOMMON = 0xff02
 336 };
 337
 338 // The valid values found in the Shdr sh_type field.
 339
 340 enum SHT
 341 {
 342   SHT_NULL = 0,
 343   SHT_PROGBITS = 1,
 344   SHT_SYMTAB = 2,
 345   SHT_STRTAB = 3,
 346   SHT_RELA = 4,
 347   SHT_HASH = 5,
 348   SHT_DYNAMIC = 6,
 349   SHT_NOTE = 7,
 350   SHT_NOBITS = 8,
 351   SHT_REL = 9,
 352   SHT_SHLIB = 10,
 353   SHT_DYNSYM = 11,
 354   SHT_INIT_ARRAY = 14,
 355   SHT_FINI_ARRAY = 15,
 356   SHT_PREINIT_ARRAY = 16,
 357   SHT_GROUP = 17,
 358   SHT_SYMTAB_SHNDX = 18,
 359   SHT_LOOS = 0x60000000,
 360   SHT_HIOS = 0x6fffffff,
 361   SHT_LOPROC = 0x70000000,
 362   SHT_HIPROC = 0x7fffffff,
 363   SHT_LOUSER = 0x80000000,
 364   SHT_HIUSER = 0xffffffff,
 365   // The remaining values are not in the standard.
 366   // Incremental build data.
 367   SHT_GNU_INCREMENTAL_INPUTS = 0x6fff4700,
 368   SHT_GNU_INCREMENTAL_SYMTAB = 0x6fff4701,
 369   SHT_GNU_INCREMENTAL_RELOCS = 0x6fff4702,
 370   SHT_GNU_INCREMENTAL_GOT_PLT = 0x6fff4703,
 371   // Object attributes.
 372   SHT_GNU_ATTRIBUTES = 0x6ffffff5,
 373   // GNU style dynamic hash table.
 374   SHT_GNU_HASH = 0x6ffffff6,
 375   // List of prelink dependencies.
 376   SHT_GNU_LIBLIST = 0x6ffffff7,
 377   // Versions defined by file.
 378   SHT_SUNW_verdef = 0x6ffffffd,
 379   SHT_GNU_verdef = 0x6ffffffd,
 380   // Versions needed by file.
 381   SHT_SUNW_verneed = 0x6ffffffe,
 382   SHT_GNU_verneed = 0x6ffffffe,
 383   // Symbol versions,
 384   SHT_SUNW_versym = 0x6fffffff,
 385   SHT_GNU_versym = 0x6fffffff,
 386
 387   SHT_SPARC_GOTDATA = 0x70000000,
 388
 389   // ARM-specific section types.
 390   // Exception Index table.
 391   SHT_ARM_EXIDX = 0x70000001,
 392   // BPABI DLL dynamic linking pre-emption map.
 393   SHT_ARM_PREEMPTMAP = 0x70000002,
 394   // Object file compatibility attributes.
 395   SHT_ARM_ATTRIBUTES = 0x70000003,
 396   // Support for debugging overlaid programs.
 397   SHT_ARM_DEBUGOVERLAY = 0x70000004,
 398   SHT_ARM_OVERLAYSECTION = 0x70000005,
 399
 400   // x86_64 unwind information.
 401   SHT_X86_64_UNWIND = 0x70000001,
 402
 403   // Link editor is to sort the entries in this section based on the
 404   // address specified in the associated symbol table entry.
 405   SHT_ORDERED = 0x7fffffff
 406 };
 407
 408 // The valid bit flags found in the Shdr sh_flags field.
 409
 410 enum SHF
 411 {
 412   SHF_WRITE = 0x1,
 413   SHF_ALLOC = 0x2,
 414   SHF_EXECINSTR = 0x4,
 415   SHF_MERGE = 0x10,
 416   SHF_STRINGS = 0x20,
 417   SHF_INFO_LINK = 0x40,
 418   SHF_LINK_ORDER = 0x80,
 419   SHF_OS_NONCONFORMING = 0x100,
 420   SHF_GROUP = 0x200,
 421   SHF_TLS = 0x400,
 422   SHF_MASKOS = 0x0ff00000,
 423   SHF_MASKPROC = 0xf0000000,
 424
 425   // Indicates this section requires ordering in relation to
 426   // other sections of the same type.  Ordered sections are
 427   // combined within the section pointed to by the sh_link entry.
 428   // The sh_info values SHN_BEFORE and SHN_AFTER imply that the
 429   // sorted section is to precede or follow, respectively, all
 430   // other sections in the set being ordered.
 431   SHF_ORDERED = 0x40000000,
 432   // This section is excluded from input to the link-edit of an
 433   // executable or shared object.  This flag is ignored if SHF_ALLOC
 434   // is also set, or if relocations exist against the section.
 435   SHF_EXCLUDE = 0x80000000,
 436
 437   // x86_64 specific large section.
 438   SHF_X86_64_LARGE = 0x10000000
 439 };
 440
 441 // Bit flags which appear in the first 32-bit word of the section data
 442 // of a SHT_GROUP section.
 443
 444 enum
 445 {
 446   GRP_COMDAT = 0x1,
 447   GRP_MASKOS = 0x0ff00000,
 448   GRP_MASKPROC = 0xf0000000
 449 };
 450
 451 // The valid values found in the Phdr p_type field.
 452
 453 enum PT
 454 {
 455   PT_NULL = 0,
 456   PT_LOAD = 1,
 457   PT_DYNAMIC = 2,
 458   PT_INTERP = 3,
 459   PT_NOTE = 4,
 460   PT_SHLIB = 5,
 461   PT_PHDR = 6,
 462   PT_TLS = 7,
 463   PT_LOOS = 0x60000000,
 464   PT_HIOS = 0x6fffffff,
 465   PT_LOPROC = 0x70000000,
 466   PT_HIPROC = 0x7fffffff,
 467   // The remaining values are not in the standard.
 468   // Frame unwind information.
 469   PT_GNU_EH_FRAME = 0x6474e550,
 470   PT_SUNW_EH_FRAME = 0x6474e550,
 471   // Stack flags.
 472   PT_GNU_STACK = 0x6474e551,
 473   // Read only after relocation.
 474   PT_GNU_RELRO = 0x6474e552,
 475   // Platform architecture compatibility information
 476   PT_ARM_ARCHEXT = 0x70000000,
 477   // Exception unwind tables
 478   PT_ARM_EXIDX = 0x70000001
 479 };
 480
 481 // The valid bit flags found in the Phdr p_flags field.
 482
 483 enum PF
 484 {
 485   PF_X = 0x1,
 486   PF_W = 0x2,
 487   PF_R = 0x4,
 488   PF_MASKOS = 0x0ff00000,
 489   PF_MASKPROC = 0xf0000000
 490 };
 491
 492 // Symbol binding from Sym st_info field.
 493
 494 enum STB
 495 {
 496   STB_LOCAL = 0,
 497   STB_GLOBAL = 1,
 498   STB_WEAK = 2,
 499   STB_LOOS = 10,
 500   STB_GNU_UNIQUE = 10,
 501   STB_HIOS = 12,
 502   STB_LOPROC = 13,
 503   STB_HIPROC = 15
 504 };
 505
 506 // Symbol types from Sym st_info field.
 507
 508 enum STT
 509 {
 510   STT_NOTYPE = 0,
 511   STT_OBJECT = 1,
 512   STT_FUNC = 2,
 513   STT_SECTION = 3,
 514   STT_FILE = 4,
 515   STT_COMMON = 5,
 516   STT_TLS = 6,
 517   STT_LOOS = 10,
 518   STT_GNU_IFUNC = 10,
 519   STT_HIOS = 12,
 520   STT_LOPROC = 13,
 521   STT_HIPROC = 15,
 522
 523   // The section type that must be used for register symbols on
 524   // Sparc.  These symbols initialize a global register.
 525   STT_SPARC_REGISTER = 13,
 526
 527   // ARM: a THUMB function.  This is not defined in ARM ELF Specification but
 528   // used by the GNU tool-chain.
 529   STT_ARM_TFUNC = 13
 530 };
 531
 532 inline STB
 533 elf_st_bind(unsigned char info)
 534 {
 535   return static_cast<STB>(info >> 4);
 536 }
 537
 538 inline STT
 539 elf_st_type(unsigned char info)
 540 {
 541   return static_cast<STT>(info & 0xf);
 542 }
 543
 544 inline unsigned char
 545 elf_st_info(STB bind, STT type)
 546 {
 547   return ((static_cast<unsigned char>(bind) << 4)
 548           + (static_cast<unsigned char>(type) & 0xf));
 549 }
 550
 551 // Symbol visibility from Sym st_other field.
 552
 553 enum STV
 554 {
 555   STV_DEFAULT = 0,
 556   STV_INTERNAL = 1,
 557   STV_HIDDEN = 2,
 558   STV_PROTECTED = 3
 559 };
 560
 561 inline STV
 562 elf_st_visibility(unsigned char other)
 563 {
 564   return static_cast<STV>(other & 0x3);
 565 }
 566
 567 inline unsigned char
 568 elf_st_nonvis(unsigned char other)
 569 {
 570   return static_cast<STV>(other >> 2);
 571 }
 572
 573 inline unsigned char
 574 elf_st_other(STV vis, unsigned char nonvis)
 575 {
 576   return ((nonvis << 2)
 577           + (static_cast<unsigned char>(vis) & 3));
 578 }
 579
 580 // Reloc information from Rel/Rela r_info field.
 581
 582 template<int size>
 583 unsigned int
 584 elf_r_sym(typename Elf_types<size>::Elf_WXword);
 585
 586 template<>
 587 inline unsigned int
 588 elf_r_sym<32>(Elf_Word v)
 589 {
 590   return v >> 8;
 591 }
 592
 593 template<>
 594 inline unsigned int
 595 elf_r_sym<64>(Elf_Xword v)
 596 {
 597   return v >> 32;
 598 }
 599
 600 template<int size>
 601 unsigned int
 602 elf_r_type(typename Elf_types<size>::Elf_WXword);
 603
 604 template<>
 605 inline unsigned int
 606 elf_r_type<32>(Elf_Word v)
 607 {
 608   return v & 0xff;
 609 }
 610
 611 template<>
 612 inline unsigned int
 613 elf_r_type<64>(Elf_Xword v)
 614 {
 615   return v & 0xffffffff;
 616 }
 617
 618 template<int size>
 619 typename Elf_types<size>::Elf_WXword
 620 elf_r_info(unsigned int s, unsigned int t);
 621
 622 template<>
 623 inline Elf_Word
 624 elf_r_info<32>(unsigned int s, unsigned int t)
 625 {
 626   return (s << 8) + (t & 0xff);
 627 }
 628
 629 template<>
 630 inline Elf_Xword
 631 elf_r_info<64>(unsigned int s, unsigned int t)
 632 {
 633   return (static_cast<Elf_Xword>(s) << 32) + (t & 0xffffffff);
 634 }
 635
 636 // Dynamic tags found in the PT_DYNAMIC segment.
 637
 638 enum DT
 639 {
 640   DT_NULL = 0,
 641   DT_NEEDED = 1,
 642   DT_PLTRELSZ = 2,
 643   DT_PLTGOT = 3,
 644   DT_HASH = 4,
 645   DT_STRTAB = 5,
 646   DT_SYMTAB = 6,
 647   DT_RELA = 7,
 648   DT_RELASZ = 8,
 649   DT_RELAENT = 9,
 650   DT_STRSZ = 10,
 651   DT_SYMENT = 11,
 652   DT_INIT = 12,
 653   DT_FINI = 13,
 654   DT_SONAME = 14,
 655   DT_RPATH = 15,
 656   DT_SYMBOLIC = 16,
 657   DT_REL = 17,
 658   DT_RELSZ = 18,
 659   DT_RELENT = 19,
 660   DT_PLTREL = 20,
 661   DT_DEBUG = 21,
 662   DT_TEXTREL = 22,
 663   DT_JMPREL = 23,
 664   DT_BIND_NOW = 24,
 665   DT_INIT_ARRAY = 25,
 666   DT_FINI_ARRAY = 26,
 667   DT_INIT_ARRAYSZ = 27,
 668   DT_FINI_ARRAYSZ = 28,
 669   DT_RUNPATH = 29,
 670   DT_FLAGS = 30,
 671
 672   // This is used to mark a range of dynamic tags.  It is not really
 673   // a tag value.
 674   DT_ENCODING = 32,
 675
 676   DT_PREINIT_ARRAY = 32,
 677   DT_PREINIT_ARRAYSZ = 33,
 678   DT_LOOS = 0x6000000d,
 679   DT_HIOS = 0x6ffff000,
 680   DT_LOPROC = 0x70000000,
 681   DT_HIPROC = 0x7fffffff,
 682
 683   // The remaining values are extensions used by GNU or Solaris.
 684   DT_VALRNGLO = 0x6ffffd00,
 685   DT_GNU_PRELINKED = 0x6ffffdf5,
 686   DT_GNU_CONFLICTSZ = 0x6ffffdf6,
 687   DT_GNU_LIBLISTSZ = 0x6ffffdf7,
 688   DT_CHECKSUM = 0x6ffffdf8,
 689   DT_PLTPADSZ = 0x6ffffdf9,
 690   DT_MOVEENT = 0x6ffffdfa,
 691   DT_MOVESZ = 0x6ffffdfb,
 692   DT_FEATURE = 0x6ffffdfc,
 693   DT_POSFLAG_1 = 0x6ffffdfd,
 694   DT_SYMINSZ = 0x6ffffdfe,
 695   DT_SYMINENT = 0x6ffffdff,
 696   DT_VALRNGHI = 0x6ffffdff,
 697
 698   DT_ADDRRNGLO = 0x6ffffe00,
 699   DT_GNU_HASH = 0x6ffffef5,
 700   DT_TLSDESC_PLT = 0x6ffffef6,
 701   DT_TLSDESC_GOT = 0x6ffffef7,
 702   DT_GNU_CONFLICT = 0x6ffffef8,
 703   DT_GNU_LIBLIST = 0x6ffffef9,
 704   DT_CONFIG = 0x6ffffefa,
 705   DT_DEPAUDIT = 0x6ffffefb,
 706   DT_AUDIT = 0x6ffffefc,
 707   DT_PLTPAD = 0x6ffffefd,
 708   DT_MOVETAB = 0x6ffffefe,
 709   DT_SYMINFO = 0x6ffffeff,
 710   DT_ADDRRNGHI = 0x6ffffeff,
 711
 712   DT_RELACOUNT = 0x6ffffff9,
 713   DT_RELCOUNT = 0x6ffffffa,
 714   DT_FLAGS_1 = 0x6ffffffb,
 715   DT_VERDEF = 0x6ffffffc,
 716   DT_VERDEFNUM = 0x6ffffffd,
 717   DT_VERNEED = 0x6ffffffe,
 718   DT_VERNEEDNUM = 0x6fffffff,
 719
 720   DT_VERSYM = 0x6ffffff0,
 721
 722   // Specify the value of _GLOBAL_OFFSET_TABLE_.
 723   DT_PPC_GOT = 0x70000000,
 724
 725   // Specify the start of the .glink section.
 726   DT_PPC64_GLINK = 0x70000000,
 727
 728   // Specify the start and size of the .opd section.
 729   DT_PPC64_OPD = 0x70000001,
 730   DT_PPC64_OPDSZ = 0x70000002,
 731
 732   // The index of an STT_SPARC_REGISTER symbol within the DT_SYMTAB
 733   // symbol table.  One dynamic entry exists for every STT_SPARC_REGISTER
 734   // symbol in the symbol table.
 735   DT_SPARC_REGISTER = 0x70000001,
 736
 737   DT_AUXILIARY = 0x7ffffffd,
 738   DT_USED = 0x7ffffffe,
 739   DT_FILTER = 0x7fffffff
 740 };
 741
 742 // Flags found in the DT_FLAGS dynamic element.
 743
 744 enum DF
 745 {
 746   DF_ORIGIN = 0x1,
 747   DF_SYMBOLIC = 0x2,
 748   DF_TEXTREL = 0x4,
 749   DF_BIND_NOW = 0x8,
 750   DF_STATIC_TLS = 0x10
 751 };
 752
 753 // Flags found in the DT_FLAGS_1 dynamic element.
 754
 755 enum DF_1
 756 {
 757   DF_1_NOW = 0x1,
 758   DF_1_GLOBAL = 0x2,
 759   DF_1_GROUP = 0x4,
 760   DF_1_NODELETE = 0x8,
 761   DF_1_LOADFLTR = 0x10,
 762   DF_1_INITFIRST = 0x20,
 763   DF_1_NOOPEN = 0x40,
 764   DF_1_ORIGIN = 0x80,
 765   DF_1_DIRECT = 0x100,
 766   DF_1_TRANS = 0x200,
 767   DF_1_INTERPOSE = 0x400,
 768   DF_1_NODEFLIB = 0x800,
 769   DF_1_NODUMP = 0x1000,
 770   DF_1_CONLFAT = 0x2000
 771 };
 772
 773 // Version numbers which appear in the vd_version field of a Verdef
 774 // structure.
 775
 776 const int VER_DEF_NONE = 0;
 777 const int VER_DEF_CURRENT = 1;
 778
 779 // Version numbers which appear in the vn_version field of a Verneed
 780 // structure.
 781
 782 const int VER_NEED_NONE = 0;
 783 const int VER_NEED_CURRENT = 1;
 784
 785 // Bit flags which appear in vd_flags of Verdef and vna_flags of
 786 // Vernaux.
 787
 788 const int VER_FLG_BASE = 0x1;
 789 const int VER_FLG_WEAK = 0x2;
 790 const int VER_FLG_INFO = 0x4;
 791
 792 // Special constants found in the SHT_GNU_versym entries.
 793
 794 const int VER_NDX_LOCAL = 0;
 795 const int VER_NDX_GLOBAL = 1;
 796
 797 // A SHT_GNU_versym section holds 16-bit words.  This bit is set if
 798 // the symbol is hidden and can only be seen when referenced using an
 799 // explicit version number.  This is a GNU extension.
 800
 801 const int VERSYM_HIDDEN = 0x8000;
 802
 803 // This is the mask for the rest of the data in a word read from a
 804 // SHT_GNU_versym section.
 805
 806 const int VERSYM_VERSION = 0x7fff;
 807
 808 // Note descriptor type codes for notes in a non-core file with an
 809 // empty name.
 810
 811 enum
 812 {
 813   // A version string.
 814   NT_VERSION = 1,
 815   // An architecture string.
 816   NT_ARCH = 2
 817 };
 818
 819 // Note descriptor type codes for notes in a non-core file with the
 820 // name "GNU".
 821
 822 enum
 823 {
 824   // The minimum ABI level.  This is used by the dynamic linker to
 825   // describe the minimal kernel version on which a shared library may
 826   // be used.  Th value should be four words.  Word 0 is an OS
 827   // descriptor (see below).  Word 1 is the major version of the ABI.
 828   // Word 2 is the minor version.  Word 3 is the subminor version.
 829   NT_GNU_ABI_TAG = 1,
 830   // Hardware capabilities information.  Word 0 is the number of
 831   // entries.  Word 1 is a bitmask of enabled entries.  The rest of
 832   // the descriptor is a series of entries, where each entry is a
 833   // single byte followed by a nul terminated string.  The byte gives
 834   // the bit number to test if enabled in the bitmask.
 835   NT_GNU_HWCAP = 2,
 836   // The build ID as set by the linker's --build-id option.  The
 837   // format of the descriptor depends on the build ID style.
 838   NT_GNU_BUILD_ID = 3,
 839   // The version of gold used to link.  Th descriptor is just a
 840   // string.
 841   NT_GNU_GOLD_VERSION = 4
 842 };
 843
 844 // The OS values which may appear in word 0 of a NT_GNU_ABI_TAG note.
 845
 846 enum
 847 {
 848   ELF_NOTE_OS_LINUX = 0,
 849   ELF_NOTE_OS_GNU = 1,
 850   ELF_NOTE_OS_SOLARIS2 = 2,
 851   ELF_NOTE_OS_FREEBSD = 3,
 852   ELF_NOTE_OS_NETBSD = 4,
 853   ELF_NOTE_OS_SYLLABLE = 5
 854 };
 855
 856 } // End namespace elfcpp.
 857
 858 // Include internal details after defining the types.
 859 #include "elfcpp_internal.h"
 860
 861 namespace elfcpp
 862 {
 863
 864 // The offset of the ELF file header in the ELF file.
 865
 866 const int file_header_offset = 0;
 867
 868 // ELF structure sizes.
 869
 870 template<int size>
 871 struct Elf_sizes
 872 {
 873   // Size of ELF file header.
 874   static const int ehdr_size = sizeof(internal::Ehdr_data<size>);
 875   // Size of ELF segment header.
 876   static const int phdr_size = sizeof(internal::Phdr_data<size>);
 877   // Size of ELF section header.
 878   static const int shdr_size = sizeof(internal::Shdr_data<size>);
 879   // Size of ELF symbol table entry.
 880   static const int sym_size = sizeof(internal::Sym_data<size>);
 881   // Sizes of ELF reloc entries.
 882   static const int rel_size = sizeof(internal::Rel_data<size>);
 883   static const int rela_size = sizeof(internal::Rela_data<size>);
 884   // Size of ELF dynamic entry.
 885   static const int dyn_size = sizeof(internal::Dyn_data<size>);
 886   // Size of ELF version structures.
 887   static const int verdef_size = sizeof(internal::Verdef_data);
 888   static const int verdaux_size = sizeof(internal::Verdaux_data);
 889   static const int verneed_size = sizeof(internal::Verneed_data);
 890   static const int vernaux_size = sizeof(internal::Vernaux_data);
 891 };
 892
 893 // Accessor class for the ELF file header.
 894
 895 template<int size, bool big_endian>
 896 class Ehdr
 897 {
 898  public:
 899   Ehdr(const unsigned char* p)
 900     : p_(reinterpret_cast<const internal::Ehdr_data<size>*>(p))
 901   { }
 902
 903   template<typename File>
 904   Ehdr(File* file, typename File::Location loc)
 905     : p_(reinterpret_cast<const internal::Ehdr_data<size>*>(
 906            file->view(loc.file_offset, loc.data_size).data()))
 907   { }
 908
 909   const unsigned char*
 910   get_e_ident() const
 911   { return this->p_->e_ident; }
 912
 913   Elf_Half
 914   get_e_type() const
 915   { return Convert<16, big_endian>::convert_host(this->p_->e_type); }
 916
 917   Elf_Half
 918   get_e_machine() const
 919   { return Convert<16, big_endian>::convert_host(this->p_->e_machine); }
 920
 921   Elf_Word
 922   get_e_version() const
 923   { return Convert<32, big_endian>::convert_host(this->p_->e_version); }
 924
 925   typename Elf_types<size>::Elf_Addr
 926   get_e_entry() const
 927   { return Convert<size, big_endian>::convert_host(this->p_->e_entry); }
 928
 929   typename Elf_types<size>::Elf_Off
 930   get_e_phoff() const
 931   { return Convert<size, big_endian>::convert_host(this->p_->e_phoff); }
 932
 933   typename Elf_types<size>::Elf_Off
 934   get_e_shoff() const
 935   { return Convert<size, big_endian>::convert_host(this->p_->e_shoff); }
 936
 937   Elf_Word
 938   get_e_flags() const
 939   { return Convert<32, big_endian>::convert_host(this->p_->e_flags); }
 940
 941   Elf_Half
 942   get_e_ehsize() const
 943   { return Convert<16, big_endian>::convert_host(this->p_->e_ehsize); }
 944
 945   Elf_Half
 946   get_e_phentsize() const
 947   { return Convert<16, big_endian>::convert_host(this->p_->e_phentsize); }
 948
 949   Elf_Half
 950   get_e_phnum() const
 951   { return Convert<16, big_endian>::convert_host(this->p_->e_phnum); }
 952
 953   Elf_Half
 954   get_e_shentsize() const
 955   { return Convert<16, big_endian>::convert_host(this->p_->e_shentsize); }
 956
 957   Elf_Half
 958   get_e_shnum() const
 959   { return Convert<16, big_endian>::convert_host(this->p_->e_shnum); }
 960
 961   Elf_Half
 962   get_e_shstrndx() const
 963   { return Convert<16, big_endian>::convert_host(this->p_->e_shstrndx); }
 964
 965  private:
 966   const internal::Ehdr_data<size>* p_;
 967 };
 968
 969 // Write class for the ELF file header.
 970
 971 template<int size, bool big_endian>
 972 class Ehdr_write
 973 {
 974  public:
 975   Ehdr_write(unsigned char* p)
 976     : p_(reinterpret_cast<internal::Ehdr_data<size>*>(p))
 977   { }
 978
 979   void
 980   put_e_ident(const unsigned char v[EI_NIDENT]) const
 981   { memcpy(this->p_->e_ident, v, EI_NIDENT); }
 982
 983   void
 984   put_e_type(Elf_Half v)
 985   { this->p_->e_type = Convert<16, big_endian>::convert_host(v); }
 986
 987   void
 988   put_e_machine(Elf_Half v)
 989   { this->p_->e_machine = Convert<16, big_endian>::convert_host(v); }
 990
 991   void
 992   put_e_version(Elf_Word v)
 993   { this->p_->e_version = Convert<32, big_endian>::convert_host(v); }
 994
 995   void
 996   put_e_entry(typename Elf_types<size>::Elf_Addr v)
 997   { this->p_->e_entry = Convert<size, big_endian>::convert_host(v); }
 998
 999   void
1000   put_e_phoff(typename Elf_types<size>::Elf_Off v)
1001   { this->p_->e_phoff = Convert<size, big_endian>::convert_host(v); }
1002
1003   void
1004   put_e_shoff(typename Elf_types<size>::Elf_Off v)
1005   { this->p_->e_shoff = Convert<size, big_endian>::convert_host(v); }
1006
1007   void
1008   put_e_flags(Elf_Word v)
1009   { this->p_->e_flags = Convert<32, big_endian>::convert_host(v); }
1010
1011   void
1012   put_e_ehsize(Elf_Half v)
1013   { this->p_->e_ehsize = Convert<16, big_endian>::convert_host(v); }
1014
1015   void
1016   put_e_phentsize(Elf_Half v)
1017   { this->p_->e_phentsize = Convert<16, big_endian>::convert_host(v); }
1018
1019   void
1020   put_e_phnum(Elf_Half v)
1021   { this->p_->e_phnum = Convert<16, big_endian>::convert_host(v); }
1022
1023   void
1024   put_e_shentsize(Elf_Half v)
1025   { this->p_->e_shentsize = Convert<16, big_endian>::convert_host(v); }
1026
1027   void
1028   put_e_shnum(Elf_Half v)
1029   { this->p_->e_shnum = Convert<16, big_endian>::convert_host(v); }
1030
1031   void
1032   put_e_shstrndx(Elf_Half v)
1033   { this->p_->e_shstrndx = Convert<16, big_endian>::convert_host(v); }
1034
1035  private:
1036   internal::Ehdr_data<size>* p_;
1037 };
1038
1039 // Accessor class for an ELF section header.
1040
1041 template<int size, bool big_endian>
1042 class Shdr
1043 {
1044  public:
1045   Shdr(const unsigned char* p)
1046     : p_(reinterpret_cast<const internal::Shdr_data<size>*>(p))
1047   { }
1048
1049   template<typename File>
1050   Shdr(File* file, typename File::Location loc)
1051     : p_(reinterpret_cast<const internal::Shdr_data<size>*>(
1052            file->view(loc.file_offset, loc.data_size).data()))
1053   { }
1054
1055   Elf_Word
1056   get_sh_name() const
1057   { return Convert<32, big_endian>::convert_host(this->p_->sh_name); }
1058
1059   Elf_Word
1060   get_sh_type() const
1061   { return Convert<32, big_endian>::convert_host(this->p_->sh_type); }
1062
1063   typename Elf_types<size>::Elf_WXword
1064   get_sh_flags() const
1065   { return Convert<size, big_endian>::convert_host(this->p_->sh_flags); }
1066
1067   typename Elf_types<size>::Elf_Addr
1068   get_sh_addr() const
1069   { return Convert<size, big_endian>::convert_host(this->p_->sh_addr); }
1070
1071   typename Elf_types<size>::Elf_Off
1072   get_sh_offset() const
1073   { return Convert<size, big_endian>::convert_host(this->p_->sh_offset); }
1074
1075   typename Elf_types<size>::Elf_WXword
1076   get_sh_size() const
1077   { return Convert<size, big_endian>::convert_host(this->p_->sh_size); }
1078
1079   Elf_Word
1080   get_sh_link() const
1081   { return Convert<32, big_endian>::convert_host(this->p_->sh_link); }
1082
1083   Elf_Word
1084   get_sh_info() const
1085   { return Convert<32, big_endian>::convert_host(this->p_->sh_info); }
1086
1087   typename Elf_types<size>::Elf_WXword
1088   get_sh_addralign() const
1089   { return
1090       Convert<size, big_endian>::convert_host(this->p_->sh_addralign); }
1091
1092   typename Elf_types<size>::Elf_WXword
1093   get_sh_entsize() const
1094   { return Convert<size, big_endian>::convert_host(this->p_->sh_entsize); }
1095
1096  private:
1097   const internal::Shdr_data<size>* p_;
1098 };
1099
1100 // Write class for an ELF section header.
1101
1102 template<int size, bool big_endian>
1103 class Shdr_write
1104 {
1105  public:
1106   Shdr_write(unsigned char* p)
1107     : p_(reinterpret_cast<internal::Shdr_data<size>*>(p))
1108   { }
1109
1110   void
1111   put_sh_name(Elf_Word v)
1112   { this->p_->sh_name = Convert<32, big_endian>::convert_host(v); }
1113
1114   void
1115   put_sh_type(Elf_Word v)
1116   { this->p_->sh_type = Convert<32, big_endian>::convert_host(v); }
1117
1118   void
1119   put_sh_flags(typename Elf_types<size>::Elf_WXword v)
1120   { this->p_->sh_flags = Convert<size, big_endian>::convert_host(v); }
1121
1122   void
1123   put_sh_addr(typename Elf_types<size>::Elf_Addr v)
1124   { this->p_->sh_addr = Convert<size, big_endian>::convert_host(v); }
1125
1126   void
1127   put_sh_offset(typename Elf_types<size>::Elf_Off v)
1128   { this->p_->sh_offset = Convert<size, big_endian>::convert_host(v); }
1129
1130   void
1131   put_sh_size(typename Elf_types<size>::Elf_WXword v)
1132   { this->p_->sh_size = Convert<size, big_endian>::convert_host(v); }
1133
1134   void
1135   put_sh_link(Elf_Word v)
1136   { this->p_->sh_link = Convert<32, big_endian>::convert_host(v); }
1137
1138   void
1139   put_sh_info(Elf_Word v)
1140   { this->p_->sh_info = Convert<32, big_endian>::convert_host(v); }
1141
1142   void
1143   put_sh_addralign(typename Elf_types<size>::Elf_WXword v)
1144   { this->p_->sh_addralign = Convert<size, big_endian>::convert_host(v); }
1145
1146   void
1147   put_sh_entsize(typename Elf_types<size>::Elf_WXword v)
1148   { this->p_->sh_entsize = Convert<size, big_endian>::convert_host(v); }
1149
1150  private:
1151   internal::Shdr_data<size>* p_;
1152 };
1153
1154 // Accessor class for an ELF segment header.
1155
1156 template<int size, bool big_endian>
1157 class Phdr
1158 {
1159  public:
1160   Phdr(const unsigned char* p)
1161     : p_(reinterpret_cast<const internal::Phdr_data<size>*>(p))
1162   { }
1163
1164   template<typename File>
1165   Phdr(File* file, typename File::Location loc)
1166     : p_(reinterpret_cast<internal::Phdr_data<size>*>(
1167            file->view(loc.file_offset, loc.data_size).data()))
1168   { }
1169
1170   Elf_Word
1171   get_p_type() const
1172   { return Convert<32, big_endian>::convert_host(this->p_->p_type); }
1173
1174   typename Elf_types<size>::Elf_Off
1175   get_p_offset() const
1176   { return Convert<size, big_endian>::convert_host(this->p_->p_offset); }
1177
1178   typename Elf_types<size>::Elf_Addr
1179   get_p_vaddr() const
1180   { return Convert<size, big_endian>::convert_host(this->p_->p_vaddr); }
1181
1182   typename Elf_types<size>::Elf_Addr
1183   get_p_paddr() const
1184   { return Convert<size, big_endian>::convert_host(this->p_->p_paddr); }
1185
1186   typename Elf_types<size>::Elf_WXword
1187   get_p_filesz() const
1188   { return Convert<size, big_endian>::convert_host(this->p_->p_filesz); }
1189
1190   typename Elf_types<size>::Elf_WXword
1191   get_p_memsz() const
1192   { return Convert<size, big_endian>::convert_host(this->p_->p_memsz); }
1193
1194   Elf_Word
1195   get_p_flags() const
1196   { return Convert<32, big_endian>::convert_host(this->p_->p_flags); }
1197
1198   typename Elf_types<size>::Elf_WXword
1199   get_p_align() const
1200   { return Convert<size, big_endian>::convert_host(this->p_->p_align); }
1201
1202  private:
1203   const internal::Phdr_data<size>* p_;
1204 };
1205
1206 // Write class for an ELF segment header.
1207
1208 template<int size, bool big_endian>
1209 class Phdr_write
1210 {
1211  public:
1212   Phdr_write(unsigned char* p)
1213     : p_(reinterpret_cast<internal::Phdr_data<size>*>(p))
1214   { }
1215
1216   void
1217   put_p_type(Elf_Word v)
1218   { this->p_->p_type = Convert<32, big_endian>::convert_host(v); }
1219
1220   void
1221   put_p_offset(typename Elf_types<size>::Elf_Off v)
1222   { this->p_->p_offset = Convert<size, big_endian>::convert_host(v); }
1223
1224   void
1225   put_p_vaddr(typename Elf_types<size>::Elf_Addr v)
1226   { this->p_->p_vaddr = Convert<size, big_endian>::convert_host(v); }
1227
1228   void
1229   put_p_paddr(typename Elf_types<size>::Elf_Addr v)
1230   { this->p_->p_paddr = Convert<size, big_endian>::convert_host(v); }
1231
1232   void
1233   put_p_filesz(typename Elf_types<size>::Elf_WXword v)
1234   { this->p_->p_filesz = Convert<size, big_endian>::convert_host(v); }
1235
1236   void
1237   put_p_memsz(typename Elf_types<size>::Elf_WXword v)
1238   { this->p_->p_memsz = Convert<size, big_endian>::convert_host(v); }
1239
1240   void
1241   put_p_flags(Elf_Word v)
1242   { this->p_->p_flags = Convert<32, big_endian>::convert_host(v); }
1243
1244   void
1245   put_p_align(typename Elf_types<size>::Elf_WXword v)
1246   { this->p_->p_align = Convert<size, big_endian>::convert_host(v); }
1247
1248  private:
1249   internal::Phdr_data<size>* p_;
1250 };
1251
1252 // Accessor class for an ELF symbol table entry.
1253
1254 template<int size, bool big_endian>
1255 class Sym
1256 {
1257  public:
1258   Sym(const unsigned char* p)
1259     : p_(reinterpret_cast<const internal::Sym_data<size>*>(p))
1260   { }
1261
1262   template<typename File>
1263   Sym(File* file, typename File::Location loc)
1264     : p_(reinterpret_cast<const internal::Sym_data<size>*>(
1265            file->view(loc.file_offset, loc.data_size).data()))
1266   { }
1267
1268   Elf_Word
1269   get_st_name() const
1270   { return Convert<32, big_endian>::convert_host(this->p_->st_name); }
1271
1272   typename Elf_types<size>::Elf_Addr
1273   get_st_value() const
1274   { return Convert<size, big_endian>::convert_host(this->p_->st_value); }
1275
1276   typename Elf_types<size>::Elf_WXword
1277   get_st_size() const
1278   { return Convert<size, big_endian>::convert_host(this->p_->st_size); }
1279
1280   unsigned char
1281   get_st_info() const
1282   { return this->p_->st_info; }
1283
1284   STB
1285   get_st_bind() const
1286   { return elf_st_bind(this->get_st_info()); }
1287
1288   STT
1289   get_st_type() const
1290   { return elf_st_type(this->get_st_info()); }
1291
1292   unsigned char
1293   get_st_other() const
1294   { return this->p_->st_other; }
1295
1296   STV
1297   get_st_visibility() const
1298   { return elf_st_visibility(this->get_st_other()); }
1299
1300   unsigned char
1301   get_st_nonvis() const
1302   { return elf_st_nonvis(this->get_st_other()); }
1303
1304   Elf_Half
1305   get_st_shndx() const
1306   { return Convert<16, big_endian>::convert_host(this->p_->st_shndx); }
1307
1308  private:
1309   const internal::Sym_data<size>* p_;
1310 };
1311
1312 // Writer class for an ELF symbol table entry.
1313
1314 template<int size, bool big_endian>
1315 class Sym_write
1316 {
1317  public:
1318   Sym_write(unsigned char* p)
1319     : p_(reinterpret_cast<internal::Sym_data<size>*>(p))
1320   { }
1321
1322   void
1323   put_st_name(Elf_Word v)
1324   { this->p_->st_name = Convert<32, big_endian>::convert_host(v); }
1325
1326   void
1327   put_st_value(typename Elf_types<size>::Elf_Addr v)
1328   { this->p_->st_value = Convert<size, big_endian>::convert_host(v); }
1329
1330   void
1331   put_st_size(typename Elf_types<size>::Elf_WXword v)
1332   { this->p_->st_size = Convert<size, big_endian>::convert_host(v); }
1333
1334   void
1335   put_st_info(unsigned char v)
1336   { this->p_->st_info = v; }
1337
1338   void
1339   put_st_info(STB bind, STT type)
1340   { this->p_->st_info = elf_st_info(bind, type); }
1341
1342   void
1343   put_st_other(unsigned char v)
1344   { this->p_->st_other = v; }
1345
1346   void
1347   put_st_other(STV vis, unsigned char nonvis)
1348   { this->p_->st_other = elf_st_other(vis, nonvis); }
1349
1350   void
1351   put_st_shndx(Elf_Half v)
1352   { this->p_->st_shndx = Convert<16, big_endian>::convert_host(v); }
1353
1354   Sym<size, big_endian>
1355   sym()
1356   { return Sym<size, big_endian>(reinterpret_cast<unsigned char*>(this->p_)); }
1357
1358  private:
1359   internal::Sym_data<size>* p_;
1360 };
1361
1362 // Accessor classes for an ELF REL relocation entry.
1363
1364 template<int size, bool big_endian>
1365 class Rel
1366 {
1367  public:
1368   Rel(const unsigned char* p)
1369     : p_(reinterpret_cast<const internal::Rel_data<size>*>(p))
1370   { }
1371
1372   template<typename File>
1373   Rel(File* file, typename File::Location loc)
1374     : p_(reinterpret_cast<const internal::Rel_data<size>*>(
1375            file->view(loc.file_offset, loc.data_size).data()))
1376   { }
1377
1378   typename Elf_types<size>::Elf_Addr
1379   get_r_offset() const
1380   { return Convert<size, big_endian>::convert_host(this->p_->r_offset); }
1381
1382   typename Elf_types<size>::Elf_WXword
1383   get_r_info() const
1384   { return Convert<size, big_endian>::convert_host(this->p_->r_info); }
1385
1386  private:
1387   const internal::Rel_data<size>* p_;
1388 };
1389
1390 // Writer class for an ELF Rel relocation.
1391
1392 template<int size, bool big_endian>
1393 class Rel_write
1394 {
1395  public:
1396   Rel_write(unsigned char* p)
1397     : p_(reinterpret_cast<internal::Rel_data<size>*>(p))
1398   { }
1399
1400   void
1401   put_r_offset(typename Elf_types<size>::Elf_Addr v)
1402   { this->p_->r_offset = Convert<size, big_endian>::convert_host(v); }
1403
1404   void
1405   put_r_info(typename Elf_types<size>::Elf_WXword v)
1406   { this->p_->r_info = Convert<size, big_endian>::convert_host(v); }
1407
1408  private:
1409   internal::Rel_data<size>* p_;
1410 };
1411
1412 // Accessor class for an ELF Rela relocation.
1413
1414 template<int size, bool big_endian>
1415 class Rela
1416 {
1417  public:
1418   Rela(const unsigned char* p)
1419     : p_(reinterpret_cast<const internal::Rela_data<size>*>(p))
1420   { }
1421
1422   template<typename File>
1423   Rela(File* file, typename File::Location loc)
1424     : p_(reinterpret_cast<const internal::Rela_data<size>*>(
1425            file->view(loc.file_offset, loc.data_size).data()))
1426   { }
1427
1428   typename Elf_types<size>::Elf_Addr
1429   get_r_offset() const
1430   { return Convert<size, big_endian>::convert_host(this->p_->r_offset); }
1431
1432   typename Elf_types<size>::Elf_WXword
1433   get_r_info() const
1434   { return Convert<size, big_endian>::convert_host(this->p_->r_info); }
1435
1436   typename Elf_types<size>::Elf_Swxword
1437   get_r_addend() const
1438   { return Convert<size, big_endian>::convert_host(this->p_->r_addend); }
1439
1440  private:
1441   const internal::Rela_data<size>* p_;
1442 };
1443
1444 // Writer class for an ELF Rela relocation.
1445
1446 template<int size, bool big_endian>
1447 class Rela_write
1448 {
1449  public:
1450   Rela_write(unsigned char* p)
1451     : p_(reinterpret_cast<internal::Rela_data<size>*>(p))
1452   { }
1453
1454   void
1455   put_r_offset(typename Elf_types<size>::Elf_Addr v)
1456   { this->p_->r_offset = Convert<size, big_endian>::convert_host(v); }
1457
1458   void
1459   put_r_info(typename Elf_types<size>::Elf_WXword v)
1460   { this->p_->r_info = Convert<size, big_endian>::convert_host(v); }
1461
1462   void
1463   put_r_addend(typename Elf_types<size>::Elf_Swxword v)
1464   { this->p_->r_addend = Convert<size, big_endian>::convert_host(v); }
1465
1466  private:
1467   internal::Rela_data<size>* p_;
1468 };
1469
1470 // Accessor classes for entries in the ELF SHT_DYNAMIC section aka
1471 // PT_DYNAMIC segment.
1472
1473 template<int size, bool big_endian>
1474 class Dyn
1475 {
1476  public:
1477   Dyn(const unsigned char* p)
1478     : p_(reinterpret_cast<const internal::Dyn_data<size>*>(p))
1479   { }
1480
1481   template<typename File>
1482   Dyn(File* file, typename File::Location loc)
1483     : p_(reinterpret_cast<const internal::Dyn_data<size>*>(
1484            file->view(loc.file_offset, loc.data_size).data()))
1485   { }
1486
1487   typename Elf_types<size>::Elf_Swxword
1488   get_d_tag() const
1489   { return Convert<size, big_endian>::convert_host(this->p_->d_tag); }
1490
1491   typename Elf_types<size>::Elf_WXword
1492   get_d_val() const
1493   { return Convert<size, big_endian>::convert_host(this->p_->d_val); }
1494
1495   typename Elf_types<size>::Elf_Addr
1496   get_d_ptr() const
1497   { return Convert<size, big_endian>::convert_host(this->p_->d_val); }
1498
1499  private:
1500   const internal::Dyn_data<size>* p_;
1501 };
1502
1503 // Write class for an entry in the SHT_DYNAMIC section.
1504
1505 template<int size, bool big_endian>
1506 class Dyn_write
1507 {
1508  public:
1509   Dyn_write(unsigned char* p)
1510     : p_(reinterpret_cast<internal::Dyn_data<size>*>(p))
1511   { }
1512
1513   void
1514   put_d_tag(typename Elf_types<size>::Elf_Swxword v)
1515   { this->p_->d_tag = Convert<size, big_endian>::convert_host(v); }
1516
1517   void
1518   put_d_val(typename Elf_types<size>::Elf_WXword v)
1519   { this->p_->d_val = Convert<size, big_endian>::convert_host(v); }
1520
1521   void
1522   put_d_ptr(typename Elf_types<size>::Elf_Addr v)
1523   { this->p_->d_val = Convert<size, big_endian>::convert_host(v); }
1524
1525  private:
1526   internal::Dyn_data<size>* p_;
1527 };
1528
1529 // Accessor classes for entries in the ELF SHT_GNU_verdef section.
1530
1531 template<int size, bool big_endian>
1532 class Verdef
1533 {
1534  public:
1535   Verdef(const unsigned char* p)
1536     : p_(reinterpret_cast<const internal::Verdef_data*>(p))
1537   { }
1538
1539   template<typename File>
1540   Verdef(File* file, typename File::Location loc)
1541     : p_(reinterpret_cast<const internal::Verdef_data*>(
1542            file->view(loc.file_offset, loc.data_size).data()))
1543   { }
1544
1545   Elf_Half
1546   get_vd_version() const
1547   { return Convert<16, big_endian>::convert_host(this->p_->vd_version); }
1548
1549   Elf_Half
1550   get_vd_flags() const
1551   { return Convert<16, big_endian>::convert_host(this->p_->vd_flags); }
1552
1553   Elf_Half
1554   get_vd_ndx() const
1555   { return Convert<16, big_endian>::convert_host(this->p_->vd_ndx); }
1556
1557   Elf_Half
1558   get_vd_cnt() const
1559   { return Convert<16, big_endian>::convert_host(this->p_->vd_cnt); }
1560
1561   Elf_Word
1562   get_vd_hash() const
1563   { return Convert<32, big_endian>::convert_host(this->p_->vd_hash); }
1564
1565   Elf_Word
1566   get_vd_aux() const
1567   { return Convert<32, big_endian>::convert_host(this->p_->vd_aux); }
1568
1569   Elf_Word
1570   get_vd_next() const
1571   { return Convert<32, big_endian>::convert_host(this->p_->vd_next); }
1572
1573  private:
1574   const internal::Verdef_data* p_;
1575 };
1576
1577 template<int size, bool big_endian>
1578 class Verdef_write
1579 {
1580  public:
1581   Verdef_write(unsigned char* p)
1582     : p_(reinterpret_cast<internal::Verdef_data*>(p))
1583   { }
1584
1585   void
1586   set_vd_version(Elf_Half v)
1587   { this->p_->vd_version = Convert<16, big_endian>::convert_host(v); }
1588
1589   void
1590   set_vd_flags(Elf_Half v)
1591   { this->p_->vd_flags = Convert<16, big_endian>::convert_host(v); }
1592
1593   void
1594   set_vd_ndx(Elf_Half v)
1595   { this->p_->vd_ndx = Convert<16, big_endian>::convert_host(v); }
1596
1597   void
1598   set_vd_cnt(Elf_Half v)
1599   { this->p_->vd_cnt = Convert<16, big_endian>::convert_host(v); }
1600
1601   void
1602   set_vd_hash(Elf_Word v)
1603   { this->p_->vd_hash = Convert<32, big_endian>::convert_host(v); }
1604
1605   void
1606   set_vd_aux(Elf_Word v)
1607   { this->p_->vd_aux = Convert<32, big_endian>::convert_host(v); }
1608
1609   void
1610   set_vd_next(Elf_Word v)
1611   { this->p_->vd_next = Convert<32, big_endian>::convert_host(v); }
1612
1613  private:
1614   internal::Verdef_data* p_;
1615 };
1616
1617 // Accessor classes for auxiliary entries in the ELF SHT_GNU_verdef
1618 // section.
1619
1620 template<int size, bool big_endian>
1621 class Verdaux
1622 {
1623  public:
1624   Verdaux(const unsigned char* p)
1625     : p_(reinterpret_cast<const internal::Verdaux_data*>(p))
1626   { }
1627
1628   template<typename File>
1629   Verdaux(File* file, typename File::Location loc)
1630     : p_(reinterpret_cast<const internal::Verdaux_data*>(
1631            file->view(loc.file_offset, loc.data_size).data()))
1632   { }
1633
1634   Elf_Word
1635   get_vda_name() const
1636   { return Convert<32, big_endian>::convert_host(this->p_->vda_name); }
1637
1638   Elf_Word
1639   get_vda_next() const
1640   { return Convert<32, big_endian>::convert_host(this->p_->vda_next); }
1641
1642  private:
1643   const internal::Verdaux_data* p_;
1644 };
1645
1646 template<int size, bool big_endian>
1647 class Verdaux_write
1648 {
1649  public:
1650   Verdaux_write(unsigned char* p)
1651     : p_(reinterpret_cast<internal::Verdaux_data*>(p))
1652   { }
1653
1654   void
1655   set_vda_name(Elf_Word v)
1656   { this->p_->vda_name = Convert<32, big_endian>::convert_host(v); }
1657
1658   void
1659   set_vda_next(Elf_Word v)
1660   { this->p_->vda_next = Convert<32, big_endian>::convert_host(v); }
1661
1662  private:
1663   internal::Verdaux_data* p_;
1664 };
1665
1666 // Accessor classes for entries in the ELF SHT_GNU_verneed section.
1667
1668 template<int size, bool big_endian>
1669 class Verneed
1670 {
1671  public:
1672   Verneed(const unsigned char* p)
1673     : p_(reinterpret_cast<const internal::Verneed_data*>(p))
1674   { }
1675
1676   template<typename File>
1677   Verneed(File* file, typename File::Location loc)
1678     : p_(reinterpret_cast<const internal::Verneed_data*>(
1679            file->view(loc.file_offset, loc.data_size).data()))
1680   { }
1681
1682   Elf_Half
1683   get_vn_version() const
1684   { return Convert<16, big_endian>::convert_host(this->p_->vn_version); }
1685
1686   Elf_Half
1687   get_vn_cnt() const
1688   { return Convert<16, big_endian>::convert_host(this->p_->vn_cnt); }
1689
1690   Elf_Word
1691   get_vn_file() const
1692   { return Convert<32, big_endian>::convert_host(this->p_->vn_file); }
1693
1694   Elf_Word
1695   get_vn_aux() const
1696   { return Convert<32, big_endian>::convert_host(this->p_->vn_aux); }
1697
1698   Elf_Word
1699   get_vn_next() const
1700   { return Convert<32, big_endian>::convert_host(this->p_->vn_next); }
1701
1702  private:
1703   const internal::Verneed_data* p_;
1704 };
1705
1706 template<int size, bool big_endian>
1707 class Verneed_write
1708 {
1709  public:
1710   Verneed_write(unsigned char* p)
1711     : p_(reinterpret_cast<internal::Verneed_data*>(p))
1712   { }
1713
1714   void
1715   set_vn_version(Elf_Half v)
1716   { this->p_->vn_version = Convert<16, big_endian>::convert_host(v); }
1717
1718   void
1719   set_vn_cnt(Elf_Half v)
1720   { this->p_->vn_cnt = Convert<16, big_endian>::convert_host(v); }
1721
1722   void
1723   set_vn_file(Elf_Word v)
1724   { this->p_->vn_file = Convert<32, big_endian>::convert_host(v); }
1725
1726   void
1727   set_vn_aux(Elf_Word v)
1728   { this->p_->vn_aux = Convert<32, big_endian>::convert_host(v); }
1729
1730   void
1731   set_vn_next(Elf_Word v)
1732   { this->p_->vn_next = Convert<32, big_endian>::convert_host(v); }
1733
1734  private:
1735   internal::Verneed_data* p_;
1736 };
1737
1738 // Accessor classes for auxiliary entries in the ELF SHT_GNU_verneed
1739 // section.
1740
1741 template<int size, bool big_endian>
1742 class Vernaux
1743 {
1744  public:
1745   Vernaux(const unsigned char* p)
1746     : p_(reinterpret_cast<const internal::Vernaux_data*>(p))
1747   { }
1748
1749   template<typename File>
1750   Vernaux(File* file, typename File::Location loc)
1751     : p_(reinterpret_cast<const internal::Vernaux_data*>(
1752            file->view(loc.file_offset, loc.data_size).data()))
1753   { }
1754
1755   Elf_Word
1756   get_vna_hash() const
1757   { return Convert<32, big_endian>::convert_host(this->p_->vna_hash); }
1758
1759   Elf_Half
1760   get_vna_flags() const
1761   { return Convert<16, big_endian>::convert_host(this->p_->vna_flags); }
1762
1763   Elf_Half
1764   get_vna_other() const
1765   { return Convert<16, big_endian>::convert_host(this->p_->vna_other); }
1766
1767   Elf_Word
1768   get_vna_name() const
1769   { return Convert<32, big_endian>::convert_host(this->p_->vna_name); }
1770
1771   Elf_Word
1772   get_vna_next() const
1773   { return Convert<32, big_endian>::convert_host(this->p_->vna_next); }
1774
1775  private:
1776   const internal::Vernaux_data* p_;
1777 };
1778
1779 template<int size, bool big_endian>
1780 class Vernaux_write
1781 {
1782  public:
1783   Vernaux_write(unsigned char* p)
1784     : p_(reinterpret_cast<internal::Vernaux_data*>(p))
1785   { }
1786
1787   void
1788   set_vna_hash(Elf_Word v)
1789   { this->p_->vna_hash = Convert<32, big_endian>::convert_host(v); }
1790
1791   void
1792   set_vna_flags(Elf_Half v)
1793   { this->p_->vna_flags = Convert<16, big_endian>::convert_host(v); }
1794
1795   void
1796   set_vna_other(Elf_Half v)
1797   { this->p_->vna_other = Convert<16, big_endian>::convert_host(v); }
1798
1799   void
1800   set_vna_name(Elf_Word v)
1801   { this->p_->vna_name = Convert<32, big_endian>::convert_host(v); }
1802
1803   void
1804   set_vna_next(Elf_Word v)
1805   { this->p_->vna_next = Convert<32, big_endian>::convert_host(v); }
1806
1807  private:
1808   internal::Vernaux_data* p_;
1809 };
1810
1811 } // End namespace elfcpp.
1812
1813 #endif // !defined(ELFPCP_H)