elfcpp/x86_64.h

   1 // x86-64.h -- ELF definitions specific to EM_X86_64  -*- C++ -*-
   2
   3 // Copyright (C) 2006-2023 Free Software Foundation, Inc.
   4 // Written by Andrew Chatham.
   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 #ifndef ELFCPP_X86_64_H
  33 #define ELFCPP_X86_64_H
  34
  35 namespace elfcpp
  36 {
  37
  38 // Documentation is taken from
  39 //   http://www.x86-64.org/documentation/abi-0.98.pdf
  40 //   elf.h
  41 // Documentation for the TLS relocs is taken from
  42 //   http://people.redhat.com/drepper/tls.pdf
  43 //   http://www.lsd.ic.unicamp.br/~oliva/writeups/TLS/RFC-TLSDESC-x86.txt
  44
  45 enum
  46 {
  47   R_X86_64_NONE = 0,       // No reloc
  48   R_X86_64_64 = 1,         // Direct 64 bit
  49   R_X86_64_PC32 = 2,       // PC relative 32 bit signed
  50   R_X86_64_GOT32 = 3,      // 32 bit GOT entry
  51   R_X86_64_PLT32 = 4,      // 32 bit PLT address
  52   R_X86_64_COPY = 5,       // Copy symbol at runtime
  53   R_X86_64_GLOB_DAT = 6,   // Create GOT entry
  54   R_X86_64_JUMP_SLOT = 7,  // Create PLT entry
  55   R_X86_64_RELATIVE = 8,   // Adjust by program base
  56   R_X86_64_GOTPCREL = 9,   // 32 bit signed PC relative offset to GOT
  57   R_X86_64_32 = 10,        // Direct 32 bit zero extended
  58   R_X86_64_32S = 11,       // Direct 32 bit sign extended
  59   R_X86_64_16 = 12,        // Direct 16 bit zero extended
  60   R_X86_64_PC16 = 13,      // 16 bit sign extended pc relative
  61   R_X86_64_8 = 14,         // Direct 8 bit sign extended
  62   R_X86_64_PC8 = 15,       // 8 bit sign extended pc relative
  63
  64   // TLS relocations
  65   R_X86_64_DTPMOD64 = 16,  // ID of module containing symbol
  66   R_X86_64_DTPOFF64 = 17,  // Offset in module's TLS block
  67   R_X86_64_TPOFF64 = 18,   // Offset in initial TLS block
  68   R_X86_64_TLSGD = 19,     // 32 bit signed PC relative offset to two
  69                            // GOT entries for GD symbol
  70   R_X86_64_TLSLD = 20,     // 32 bit signed PC relative offset to two
  71                            // GOT entries for LD symbol
  72   R_X86_64_DTPOFF32 = 21,  // Offset in TLS block
  73   R_X86_64_GOTTPOFF = 22,  // 32 bit signed PC relative offset to GOT
  74                            // entry for IE symbol
  75   R_X86_64_TPOFF32 = 23,   // Offset in initial TLS block
  76
  77   R_X86_64_PC64 = 24,      // 64-bit PC relative
  78   R_X86_64_GOTOFF64 = 25,  // 64-bit GOT offset
  79   R_X86_64_GOTPC32 = 26,   // 32-bit PC relative offset to GOT
  80
  81   R_X86_64_GOT64 = 27,     // 64-bit GOT entry offset
  82   R_X86_64_GOTPCREL64 = 28, // 64-bit PC relative offset to GOT entry
  83   R_X86_64_GOTPC64 = 29,   // 64-bit PC relative offset to GOT
  84   R_X86_64_GOTPLT64 = 30,  // Like GOT64, indicates that PLT entry needed
  85   R_X86_64_PLTOFF64 = 31,  // 64-bit GOT relative offset to PLT entry
  86
  87   R_X86_64_SIZE32 = 32,
  88   R_X86_64_SIZE64 = 33,
  89
  90   R_X86_64_GOTPC32_TLSDESC = 34, // 32-bit PC relative to TLS descriptor in GOT
  91   R_X86_64_TLSDESC_CALL = 35,    // Relaxable call through TLS descriptor
  92   R_X86_64_TLSDESC = 36,         // 2 by 64-bit TLS descriptor
  93   R_X86_64_IRELATIVE = 37,          // Adjust indirectly by program base
  94   R_X86_64_RELATIVE64 = 38,      // 64-bit adjust by program base
  95   R_X86_64_PC32_BND = 39,  // PC relative 32 bit signed with BND prefix
  96   R_X86_64_PLT32_BND = 40, // 32 bit PLT address with BND prefix
  97   R_X86_64_GOTPCRELX = 41, // 32 bit signed PC relative offset to GOT
  98                            // without REX prefix, relaxable.
  99   R_X86_64_REX_GOTPCRELX = 42, // 32 bit signed PC relative offset to GOT
 100                                // with REX prefix, relaxable.
 101   // GNU vtable garbage collection extensions.
 102   R_X86_64_GNU_VTINHERIT = 250,
 103   R_X86_64_GNU_VTENTRY = 251
 104 };
 105
 106 // The bit values that can appear in the GNU_PROPERTY_X86_FEATURE_1_AND
 107 // program property.
 108
 109 const uint64_t GNU_PROPERTY_X86_FEATURE_1_IBT = 1ULL << 0;
 110 const uint64_t GNU_PROPERTY_X86_FEATURE_1_SHSTK = 1ULL << 1;
 111
 112 } // End namespace elfcpp.
 113
 114 #endif // !defined(ELFCPP_X86_64_H)