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// x86-64.h -- ELF definitions specific to EM_X86_64 -*- C++ -*-
// Copyright (C) 2006-2025 Free Software Foundation, Inc.
// Written by Andrew Chatham.
// This file is part of elfcpp.
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public License
// as published by the Free Software Foundation; either version 2, or
// (at your option) any later version.
// In addition to the permissions in the GNU Library General Public
// License, the Free Software Foundation gives you unlimited
// permission to link the compiled version of this file into
// combinations with other programs, and to distribute those
// combinations without any restriction coming from the use of this
// file. (The Library Public License restrictions do apply in other
// respects; for example, they cover modification of the file, and
/// distribution when not linked into a combined executable.)
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Library General Public License for more details.
// You should have received a copy of the GNU Library General Public
// License along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
// 02110-1301, USA.
#ifndef ELFCPP_X86_64_H
#define ELFCPP_X86_64_H
namespace elfcpp
{
// Documentation is taken from
// http://www.x86-64.org/documentation/abi-0.98.pdf
// elf.h
// Documentation for the TLS relocs is taken from
// http://people.redhat.com/drepper/tls.pdf
// http://www.lsd.ic.unicamp.br/~oliva/writeups/TLS/RFC-TLSDESC-x86.txt
enum
{
R_X86_64_NONE = 0, // No reloc
R_X86_64_64 = 1, // Direct 64 bit
R_X86_64_PC32 = 2, // PC relative 32 bit signed
R_X86_64_GOT32 = 3, // 32 bit GOT entry
R_X86_64_PLT32 = 4, // 32 bit PLT address
R_X86_64_COPY = 5, // Copy symbol at runtime
R_X86_64_GLOB_DAT = 6, // Create GOT entry
R_X86_64_JUMP_SLOT = 7, // Create PLT entry
R_X86_64_RELATIVE = 8, // Adjust by program base
R_X86_64_GOTPCREL = 9, // 32 bit signed PC relative offset to GOT
R_X86_64_32 = 10, // Direct 32 bit zero extended
R_X86_64_32S = 11, // Direct 32 bit sign extended
R_X86_64_16 = 12, // Direct 16 bit zero extended
R_X86_64_PC16 = 13, // 16 bit sign extended pc relative
R_X86_64_8 = 14, // Direct 8 bit sign extended
R_X86_64_PC8 = 15, // 8 bit sign extended pc relative
// TLS relocations
R_X86_64_DTPMOD64 = 16, // ID of module containing symbol
R_X86_64_DTPOFF64 = 17, // Offset in module's TLS block
R_X86_64_TPOFF64 = 18, // Offset in initial TLS block
R_X86_64_TLSGD = 19, // 32 bit signed PC relative offset to two
// GOT entries for GD symbol
R_X86_64_TLSLD = 20, // 32 bit signed PC relative offset to two
// GOT entries for LD symbol
R_X86_64_DTPOFF32 = 21, // Offset in TLS block
R_X86_64_GOTTPOFF = 22, // 32 bit signed PC relative offset to GOT
// entry for IE symbol
R_X86_64_TPOFF32 = 23, // Offset in initial TLS block
R_X86_64_PC64 = 24, // 64-bit PC relative
R_X86_64_GOTOFF64 = 25, // 64-bit GOT offset
R_X86_64_GOTPC32 = 26, // 32-bit PC relative offset to GOT
R_X86_64_GOT64 = 27, // 64-bit GOT entry offset
R_X86_64_GOTPCREL64 = 28, // 64-bit PC relative offset to GOT entry
R_X86_64_GOTPC64 = 29, // 64-bit PC relative offset to GOT
R_X86_64_GOTPLT64 = 30, // Like GOT64, indicates that PLT entry needed
R_X86_64_PLTOFF64 = 31, // 64-bit GOT relative offset to PLT entry
R_X86_64_SIZE32 = 32,
R_X86_64_SIZE64 = 33,
R_X86_64_GOTPC32_TLSDESC = 34, // 32-bit PC relative to TLS descriptor in GOT
R_X86_64_TLSDESC_CALL = 35, // Relaxable call through TLS descriptor
R_X86_64_TLSDESC = 36, // 2 by 64-bit TLS descriptor
R_X86_64_IRELATIVE = 37, // Adjust indirectly by program base
R_X86_64_RELATIVE64 = 38, // 64-bit adjust by program base
R_X86_64_PC32_BND = 39, // PC relative 32 bit signed with BND prefix
R_X86_64_PLT32_BND = 40, // 32 bit PLT address with BND prefix
R_X86_64_GOTPCRELX = 41, // 32 bit signed PC relative offset to GOT
// without REX nor REX2 prefixes, relaxable.
R_X86_64_REX_GOTPCRELX = 42, // 32 bit signed PC relative offset to GOT
// with REX prefix, relaxable.
R_X86_64_CODE_4_GOTPCRELX = 43, // 32 bit signed PC relative offset to
// GOT if the instruction starts at 4
// bytes before the relocation offset,
// relaxable.
R_X86_64_CODE_4_GOTTPOFF = 44, // 32 bit signed PC relative offset to
// GOT entry for IE symbol if the
// instruction starts at 4 bytes before
// the relocation offset.
R_X86_64_CODE_4_GOTPC32_TLSDESC = 45, // 32-bit PC relative to TLS
// descriptor in GOT if the
// instruction starts at 4 bytes
// before the relocation offset.
R_X86_64_CODE_5_GOTPCRELX = 46, // 32 bit signed PC relative offset to
// GOT if the instruction starts at 5
// bytes before the relocation offset,
// relaxable.
R_X86_64_CODE_5_GOTTPOFF = 47, // 32 bit signed PC relative offset to
// GOT entry for IE symbol if the
// instruction starts at 5 bytes before
// the relocation offset.
R_X86_64_CODE_5_GOTPC32_TLSDESC = 48, // 32-bit PC relative to TLS
// descriptor in GOT if the
// instruction starts at 5 bytes
// before the relocation offset.
R_X86_64_CODE_6_GOTPCRELX = 49, // 32 bit signed PC relative offset to
// GOT if the instruction starts at 6
// bytes before the relocation offset,
// relaxable.
R_X86_64_CODE_6_GOTTPOFF = 50, // 32 bit signed PC relative offset to
// GOT entry for IE symbol if the
// instruction starts at 6 bytes before
// the relocation offset.
R_X86_64_CODE_6_GOTPC32_TLSDESC = 51, // 32-bit PC relative to TLS
// descriptor in GOT if the
// instruction starts at 6 bytes
// before the relocation offset.
// GNU vtable garbage collection extensions.
R_X86_64_GNU_VTINHERIT = 250,
R_X86_64_GNU_VTENTRY = 251
};
// The bit values that can appear in the GNU_PROPERTY_X86_FEATURE_1_AND
// program property.
const uint64_t GNU_PROPERTY_X86_FEATURE_1_IBT = 1ULL << 0;
const uint64_t GNU_PROPERTY_X86_FEATURE_1_SHSTK = 1ULL << 1;
} // End namespace elfcpp.
#endif // !defined(ELFCPP_X86_64_H)
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