1 /*- 2 * Copyright (c) 1996-1998 John D. Polstra. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/sys/elf64.h,v 1.9 1999/08/28 00:51:42 peter Exp $ 27 * $DragonFly: src/sys/sys/elf64.h,v 1.7 2007/12/12 23:29:20 dillon Exp $ 28 */ 29 30 #ifndef _SYS_ELF64_H_ 31 #define _SYS_ELF64_H_ 32 33 #ifndef _SYS_TYPES_H_ 34 #include <sys/types.h> 35 #endif 36 #ifndef _SYS_ELF_COMMON_H_ 37 #include <sys/elf_common.h> 38 #endif 39 40 /* 41 * ELF definitions common to all 64-bit architectures. 42 */ 43 44 typedef u_int64_t Elf64_Addr; 45 typedef u_int16_t Elf64_Half; 46 typedef u_int64_t Elf64_Off; 47 typedef int32_t Elf64_Sword; 48 typedef int64_t Elf64_Sxword; 49 typedef u_int32_t Elf64_Word; 50 typedef u_int64_t Elf64_Lword; 51 typedef u_int64_t Elf64_Xword; 52 typedef u_int64_t Elf64_Size; 53 typedef u_int16_t Elf64_Quarter; 54 typedef Elf64_Half Elf64_Hashelt; 55 56 /* 57 * ELF header. 58 */ 59 60 typedef struct { 61 unsigned char e_ident[EI_NIDENT]; /* File identification. */ 62 Elf64_Quarter e_type; /* File type. */ 63 Elf64_Quarter e_machine; /* Machine architecture. */ 64 Elf64_Half e_version; /* ELF format version. */ 65 Elf64_Addr e_entry; /* Entry point. */ 66 Elf64_Off e_phoff; /* Program header file offset. */ 67 Elf64_Off e_shoff; /* Section header file offset. */ 68 Elf64_Half e_flags; /* Architecture-specific flags. */ 69 Elf64_Quarter e_ehsize; /* Size of ELF header in bytes. */ 70 Elf64_Quarter e_phentsize; /* Size of program header entry. */ 71 Elf64_Quarter e_phnum; /* Number of program header entries. */ 72 Elf64_Quarter e_shentsize; /* Size of section header entry. */ 73 Elf64_Quarter e_shnum; /* Number of section header entries. */ 74 Elf64_Quarter e_shstrndx; /* Section name strings section. */ 75 } Elf64_Ehdr; 76 77 /* 78 * Section header. 79 */ 80 81 typedef struct { 82 Elf64_Half sh_name; /* Section name (index into the 83 section header string table). */ 84 Elf64_Half sh_type; /* Section type. */ 85 Elf64_Size sh_flags; /* Section flags. */ 86 Elf64_Addr sh_addr; /* Address in memory image. */ 87 Elf64_Off sh_offset; /* Offset in file. */ 88 Elf64_Size sh_size; /* Size in bytes. */ 89 Elf64_Half sh_link; /* Index of a related section. */ 90 Elf64_Half sh_info; /* Depends on section type. */ 91 Elf64_Size sh_addralign; /* Alignment in bytes. */ 92 Elf64_Size sh_entsize; /* Size of each entry in section. */ 93 } Elf64_Shdr; 94 95 /* 96 * Program header. 97 */ 98 99 typedef struct { 100 Elf64_Half p_type; /* Entry type. */ 101 Elf64_Half p_flags; /* Access permission flags. */ 102 Elf64_Off p_offset; /* File offset of contents. */ 103 Elf64_Addr p_vaddr; /* Virtual address in memory image. */ 104 Elf64_Addr p_paddr; /* Physical address (not used). */ 105 Elf64_Size p_filesz; /* Size of contents in file. */ 106 Elf64_Size p_memsz; /* Size of contents in memory. */ 107 Elf64_Size p_align; /* Alignment in memory and file. */ 108 } Elf64_Phdr; 109 110 /* 111 * Dynamic structure. The ".dynamic" section contains an array of them. 112 */ 113 114 typedef struct { 115 Elf64_Size d_tag; /* Entry type. */ 116 union { 117 Elf64_Size d_val; /* Integer value. */ 118 Elf64_Addr d_ptr; /* Address value. */ 119 } d_un; 120 } Elf64_Dyn; 121 122 /* 123 * Relocation entries. 124 */ 125 126 /* Relocations that don't need an addend field. */ 127 typedef struct { 128 Elf64_Addr r_offset; /* Location to be relocated. */ 129 Elf64_Size r_info; /* Relocation type and symbol index. */ 130 } Elf64_Rel; 131 132 /* Relocations that need an addend field. */ 133 typedef struct { 134 Elf64_Addr r_offset; /* Location to be relocated. */ 135 Elf64_Size r_info; /* Relocation type and symbol index. */ 136 Elf64_Off r_addend; /* Addend. */ 137 } Elf64_Rela; 138 139 /* Macros for accessing the fields of r_info. */ 140 #define ELF64_R_SYM(info) ((info) >> 32) 141 #define ELF64_R_TYPE(info) ((unsigned char)(info)) 142 143 /* Macro for constructing r_info from field values. */ 144 #define ELF64_R_INFO(sym, type) (((sym) << 32) + (unsigned char)(type)) 145 146 /* 147 * Symbol table entries. 148 */ 149 150 typedef struct { 151 Elf64_Half st_name; /* String table index of name. */ 152 unsigned char st_info; /* Type and binding information. */ 153 unsigned char st_other; /* Reserved (not used). */ 154 Elf64_Quarter st_shndx; /* Section index of symbol. */ 155 Elf64_Addr st_value; /* Symbol value. */ 156 Elf64_Size st_size; /* Size of associated object. */ 157 } Elf64_Sym; 158 159 /* Macros for accessing the fields of st_info. */ 160 #define ELF64_ST_BIND(info) ((info) >> 4) 161 #define ELF64_ST_TYPE(info) ((info) & 0xf) 162 163 /* Macro for constructing st_info from field values. */ 164 #define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf)) 165 166 #endif /* !_SYS_ELF64_H_ */ 167