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)