| 1 | /* $Id: elf64.h 106061 2024-09-16 14:03:52Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - ELF 64-bit header.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2010-2024 Oracle and/or its affiliates.
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox base platform packages, as
|
|---|
| 10 | * available from https://www.virtualbox.org.
|
|---|
| 11 | *
|
|---|
| 12 | * This program is free software; you can redistribute it and/or
|
|---|
| 13 | * modify it under the terms of the GNU General Public License
|
|---|
| 14 | * as published by the Free Software Foundation, in version 3 of the
|
|---|
| 15 | * License.
|
|---|
| 16 | *
|
|---|
| 17 | * This program is distributed in the hope that it will be useful, but
|
|---|
| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|---|
| 20 | * General Public License for more details.
|
|---|
| 21 | *
|
|---|
| 22 | * You should have received a copy of the GNU General Public License
|
|---|
| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
|
|---|
| 24 | *
|
|---|
| 25 | * The contents of this file may alternatively be used under the terms
|
|---|
| 26 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
|
|---|
| 28 | * in the VirtualBox distribution, in which case the provisions of the
|
|---|
| 29 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 30 | *
|
|---|
| 31 | * You may elect to license modified versions of this file under the
|
|---|
| 32 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 33 | *
|
|---|
| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
|
|---|
| 35 | */
|
|---|
| 36 |
|
|---|
| 37 | #ifndef IPRT_INCLUDED_formats_elf64_h
|
|---|
| 38 | #define IPRT_INCLUDED_formats_elf64_h
|
|---|
| 39 | #ifndef RT_WITHOUT_PRAGMA_ONCE
|
|---|
| 40 | # pragma once
|
|---|
| 41 | #endif
|
|---|
| 42 |
|
|---|
| 43 | #include <iprt/assertcompile.h>
|
|---|
| 44 | #include "elf-common.h"
|
|---|
| 45 |
|
|---|
| 46 | /*
|
|---|
| 47 | * ELF 64 standard types.
|
|---|
| 48 | */
|
|---|
| 49 | typedef uint64_t Elf64_Addr;
|
|---|
| 50 | typedef uint64_t Elf64_Off;
|
|---|
| 51 | typedef uint16_t Elf64_Half;
|
|---|
| 52 | typedef uint32_t Elf64_Word;
|
|---|
| 53 | typedef int32_t Elf64_Sword;
|
|---|
| 54 | typedef uint64_t Elf64_Xword;
|
|---|
| 55 | typedef int64_t Elf64_Sxword;
|
|---|
| 56 |
|
|---|
| 57 | /*
|
|---|
| 58 | * Ensure type size correctness in accordance to ELF-64 Object File Format, Version 1.5 Draft 2, p2.
|
|---|
| 59 | */
|
|---|
| 60 | AssertCompileSize(Elf64_Addr, 8);
|
|---|
| 61 | AssertCompileSize(Elf64_Off, 8);
|
|---|
| 62 | AssertCompileSize(Elf64_Half, 2);
|
|---|
| 63 | AssertCompileSize(Elf64_Word, 4);
|
|---|
| 64 | AssertCompileSize(Elf64_Sword, 4);
|
|---|
| 65 | AssertCompileSize(Elf64_Xword, 8);
|
|---|
| 66 | AssertCompileSize(Elf64_Sxword, 8);
|
|---|
| 67 |
|
|---|
| 68 | /*
|
|---|
| 69 | * ELF 64 non-standard types for convenience.
|
|---|
| 70 | */
|
|---|
| 71 | typedef Elf64_Xword Elf64_Size;
|
|---|
| 72 | typedef Elf64_Word Elf64_Hashelt;
|
|---|
| 73 |
|
|---|
| 74 | /*
|
|---|
| 75 | * ELF Header.
|
|---|
| 76 | */
|
|---|
| 77 | typedef struct
|
|---|
| 78 | {
|
|---|
| 79 | unsigned char e_ident[16]; /* ELF identification. */
|
|---|
| 80 | Elf64_Half e_type; /* Object file type. */
|
|---|
| 81 | Elf64_Half e_machine; /* Machine type. */
|
|---|
| 82 | Elf64_Word e_version; /* Object file version. */
|
|---|
| 83 | Elf64_Addr e_entry; /* Entry point address. */
|
|---|
| 84 | Elf64_Off e_phoff; /* Program header offset. */
|
|---|
| 85 | Elf64_Off e_shoff; /* Section header offset. */
|
|---|
| 86 | Elf64_Word e_flags; /* Processor-specific flags. */
|
|---|
| 87 | Elf64_Half e_ehsize; /* ELF header size. */
|
|---|
| 88 | Elf64_Half e_phentsize; /* Size of program header entry. */
|
|---|
| 89 | Elf64_Half e_phnum; /* Number of program header entries. */
|
|---|
| 90 | Elf64_Half e_shentsize; /* Size of section header entry. */
|
|---|
| 91 | Elf64_Half e_shnum; /* Number of section header entries. */
|
|---|
| 92 | Elf64_Half e_shstrndx; /* Section name string table index. */
|
|---|
| 93 | } Elf64_Ehdr;
|
|---|
| 94 |
|
|---|
| 95 | /*
|
|---|
| 96 | * Section header.
|
|---|
| 97 | */
|
|---|
| 98 | typedef struct
|
|---|
| 99 | {
|
|---|
| 100 | Elf64_Word sh_name; /* Section name. */
|
|---|
| 101 | Elf64_Word sh_type; /* Section type. */
|
|---|
| 102 | Elf64_Xword sh_flags; /* Section attributes. */
|
|---|
| 103 | Elf64_Addr sh_addr; /* Virtual address in memory. */
|
|---|
| 104 | Elf64_Off sh_offset; /* Offset in file. */
|
|---|
| 105 | Elf64_Xword sh_size; /* Size of section. */
|
|---|
| 106 | Elf64_Word sh_link; /* Link to other section. */
|
|---|
| 107 | Elf64_Word sh_info; /* Miscellaneous information. */
|
|---|
| 108 | Elf64_Xword sh_addralign; /* Address alignment boundary. */
|
|---|
| 109 | Elf64_Xword sh_entsize; /* Size of entries, if section has table. */
|
|---|
| 110 | } Elf64_Shdr;
|
|---|
| 111 |
|
|---|
| 112 | /*
|
|---|
| 113 | * Program header.
|
|---|
| 114 | */
|
|---|
| 115 | typedef struct
|
|---|
| 116 | {
|
|---|
| 117 | Elf64_Word p_type; /* Type of segment. */
|
|---|
| 118 | Elf64_Word p_flags; /* Segment attributes. */
|
|---|
| 119 | Elf64_Off p_offset; /* Offset in file. */
|
|---|
| 120 | Elf64_Addr p_vaddr; /* Virtual address in memory. */
|
|---|
| 121 | Elf64_Addr p_paddr; /* Physical address (reserved). */
|
|---|
| 122 | Elf64_Xword p_filesz; /* Size of segment in file. */
|
|---|
| 123 | Elf64_Xword p_memsz; /* Size of segment in memory. */
|
|---|
| 124 | Elf64_Xword p_align; /* Alignment of segment. */
|
|---|
| 125 | } Elf64_Phdr;
|
|---|
| 126 |
|
|---|
| 127 | /*
|
|---|
| 128 | * Note header.
|
|---|
| 129 | */
|
|---|
| 130 | typedef struct
|
|---|
| 131 | {
|
|---|
| 132 | Elf64_Word n_namesz; /* Length of note's name. */
|
|---|
| 133 | Elf64_Word n_descsz; /* Length of note's description. */
|
|---|
| 134 | Elf64_Word n_type; /* Type of note. */
|
|---|
| 135 | } Elf64_Nhdr;
|
|---|
| 136 |
|
|---|
| 137 | /*
|
|---|
| 138 | * Symbol table entry.
|
|---|
| 139 | */
|
|---|
| 140 | typedef struct
|
|---|
| 141 | {
|
|---|
| 142 | Elf64_Word st_name; /* Symbol name. */
|
|---|
| 143 | unsigned char st_info; /* Type and binding attributes. */
|
|---|
| 144 | unsigned char st_other; /* Reserved. */
|
|---|
| 145 | Elf64_Half st_shndx; /* Section header table index. */
|
|---|
| 146 | Elf64_Addr st_value; /* Symbol value. */
|
|---|
| 147 | Elf64_Xword st_size; /* Size associated with symbol. */
|
|---|
| 148 | } Elf64_Sym;
|
|---|
| 149 |
|
|---|
| 150 | /*
|
|---|
| 151 | * Relocations.
|
|---|
| 152 | */
|
|---|
| 153 | typedef struct
|
|---|
| 154 | {
|
|---|
| 155 | Elf64_Addr r_offset; /* Location to be relocated. */
|
|---|
| 156 | Elf64_Xword r_info; /* Symbol index and type of relocation. */
|
|---|
| 157 | } Elf64_Rel;
|
|---|
| 158 |
|
|---|
| 159 | typedef struct
|
|---|
| 160 | {
|
|---|
| 161 | Elf64_Addr r_offset; /* Location to be relocated. */
|
|---|
| 162 | Elf64_Xword r_info; /* Symbol index and type of relocation. */
|
|---|
| 163 | Elf64_Sxword r_addend; /* Constant part of expression. */
|
|---|
| 164 | } Elf64_Rela;
|
|---|
| 165 |
|
|---|
| 166 | /*
|
|---|
| 167 | * Dynamic section entry.
|
|---|
| 168 | * ".dynamic" section contains an array of this.
|
|---|
| 169 | */
|
|---|
| 170 | typedef struct
|
|---|
| 171 | {
|
|---|
| 172 | Elf64_Sxword d_tag; /* Type of entry. */
|
|---|
| 173 | union
|
|---|
| 174 | {
|
|---|
| 175 | Elf64_Xword d_val; /* Integer value. */
|
|---|
| 176 | Elf64_Addr d_ptr; /* Virtual address value. */
|
|---|
| 177 | } d_un;
|
|---|
| 178 | } Elf64_Dyn;
|
|---|
| 179 |
|
|---|
| 180 | /*
|
|---|
| 181 | * Helper macros.
|
|---|
| 182 | */
|
|---|
| 183 | /** The symbol's type. */
|
|---|
| 184 | #define ELF64_ST_TYPE(info) ((info) & 0xF)
|
|---|
| 185 | /** The symbol's binding. */
|
|---|
| 186 | #define ELF64_ST_BIND(info) ((info) >> 4)
|
|---|
| 187 | /** Make st_info. given binding and type. */
|
|---|
| 188 | #define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
|
|---|
| 189 |
|
|---|
| 190 | /** Relocation type. */
|
|---|
| 191 | #define ELF64_R_TYPE(info) ((unsigned char)(info))
|
|---|
| 192 | /** Relocation symbol index. */
|
|---|
| 193 | #define ELF64_R_SYM(info) ((info) >> 32)
|
|---|
| 194 | /** Make r_info given the symbol index and type. */
|
|---|
| 195 | #define ELF64_R_INFO(sym, type) (((sym) << 32) + (unsigned char)(type))
|
|---|
| 196 |
|
|---|
| 197 |
|
|---|
| 198 | #endif /* !IPRT_INCLUDED_formats_elf64_h */
|
|---|
| 199 |
|
|---|
