/* $Id: elf64.h $ */ /** @file * IPRT - ELF 64-bit header. */ /* * Copyright (C) 2010-2019 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. * * The contents of this file may alternatively be used under the terms * of the Common Development and Distribution License Version 1.0 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the * VirtualBox OSE distribution, in which case the provisions of the * CDDL are applicable instead of those of the GPL. * * You may elect to license modified versions of this file under the * terms and conditions of either the GPL or the CDDL or both. */ #ifndef IPRT_INCLUDED_formats_elf64_h #define IPRT_INCLUDED_formats_elf64_h #ifndef RT_WITHOUT_PRAGMA_ONCE # pragma once #endif #include #include "elf-common.h" /* * ELF 64 standard types. */ typedef uint64_t Elf64_Addr; typedef uint64_t Elf64_Off; typedef uint16_t Elf64_Half; typedef uint32_t Elf64_Word; typedef int32_t Elf64_Sword; typedef uint64_t Elf64_Xword; typedef int64_t Elf64_Sxword; /* * Ensure type size correctness in accordance to ELF-64 Object File Format, Version 1.5 Draft 2, p2. */ AssertCompileSize(Elf64_Addr, 8); AssertCompileSize(Elf64_Off, 8); AssertCompileSize(Elf64_Half, 2); AssertCompileSize(Elf64_Word, 4); AssertCompileSize(Elf64_Sword, 4); AssertCompileSize(Elf64_Xword, 8); AssertCompileSize(Elf64_Sxword, 8); /* * ELF 64 non-standard types for convenience. */ typedef Elf64_Xword Elf64_Size; typedef Elf64_Word Elf64_Hashelt; /* * ELF Header. */ typedef struct { unsigned char e_ident[16]; /* ELF identification. */ Elf64_Half e_type; /* Object file type. */ Elf64_Half e_machine; /* Machine type. */ Elf64_Word e_version; /* Object file version. */ Elf64_Addr e_entry; /* Entry point address. */ Elf64_Off e_phoff; /* Program header offset. */ Elf64_Off e_shoff; /* Section header offset. */ Elf64_Word e_flags; /* Processor-specific flags. */ Elf64_Half e_ehsize; /* ELF header size. */ Elf64_Half e_phentsize; /* Size of program header entry. */ Elf64_Half e_phnum; /* Number of program header entries. */ Elf64_Half e_shentsize; /* Size of section header entry. */ Elf64_Half e_shnum; /* Number of section header entries. */ Elf64_Half e_shstrndx; /* Section name string table index. */ } Elf64_Ehdr; /* * Section header. */ typedef struct { Elf64_Word sh_name; /* Section name. */ Elf64_Word sh_type; /* Section type. */ Elf64_Xword sh_flags; /* Section attributes. */ Elf64_Addr sh_addr; /* Virtual address in memory. */ Elf64_Off sh_offset; /* Offset in file. */ Elf64_Xword sh_size; /* Size of section. */ Elf64_Word sh_link; /* Link to other section. */ Elf64_Word sh_info; /* Miscellaneous information. */ Elf64_Xword sh_addralign; /* Address alignment boundary. */ Elf64_Xword sh_entsize; /* Size of entries, if section has table. */ } Elf64_Shdr; /* * Program header. */ typedef struct { Elf64_Word p_type; /* Type of segment. */ Elf64_Word p_flags; /* Segment attributes. */ Elf64_Off p_offset; /* Offset in file. */ Elf64_Addr p_vaddr; /* Virtual address in memory. */ Elf64_Addr p_paddr; /* Physical address (reserved). */ Elf64_Xword p_filesz; /* Size of segment in file. */ Elf64_Xword p_memsz; /* Size of segment in memory. */ Elf64_Xword p_align; /* Alignment of segment. */ } Elf64_Phdr; /* * Note header. */ typedef struct { Elf64_Word n_namesz; /* Length of note's name. */ Elf64_Word n_descsz; /* Length of note's description. */ Elf64_Word n_type; /* Type of note. */ } Elf64_Nhdr; /* * Symbol table entry. */ typedef struct { Elf64_Word st_name; /* Symbol name. */ unsigned char st_info; /* Type and binding attributes. */ unsigned char st_other; /* Reserved. */ Elf64_Half st_shndx; /* Section header table index. */ Elf64_Addr st_value; /* Symbol value. */ Elf64_Xword st_size; /* Size associated with symbol. */ } Elf64_Sym; /* * Relocations. */ typedef struct { Elf64_Addr r_offset; /* Location to be relocated. */ Elf64_Xword r_info; /* Symbol index and type of relocation. */ } Elf64_Rel; typedef struct { Elf64_Addr r_offset; /* Location to be relocated. */ Elf64_Xword r_info; /* Symbol index and type of relocation. */ Elf64_Sxword r_addend; /* Constant part of expression. */ } Elf64_Rela; /* * Dynamic section entry. * ".dynamic" section contains an array of this. */ typedef struct { Elf64_Sxword d_tag; /* Type of entry. */ union { Elf64_Xword d_val; /* Integer value. */ Elf64_Addr d_ptr; /* Virtual address value. */ } d_un; } Elf64_Dyn; /* * Helper macros. */ /** The symbol's type. */ #define ELF64_ST_TYPE(info) ((info) & 0xF) /** The symbol's binding. */ #define ELF64_ST_BIND(info) ((info) >> 4) /** Make st_info. given binding and type. */ #define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf)) /** Relocation type. */ #define ELF64_R_TYPE(info) ((unsigned char)(info)) /** Relocation symbol index. */ #define ELF64_R_SYM(info) ((info) >> 32) /** Make r_info given the symbol index and type. */ #define ELF64_R_INFO(sym, type) (((sym) << 32) + (unsigned char)(type)) #endif /* !IPRT_INCLUDED_formats_elf64_h */