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 1.3 2003/11/10 06:12:17 dillon Exp $ 28 */ 29 30 #ifndef _SYS_ELF64_H_ 31 #define _SYS_ELF64_H_ 1 32 33 #include <sys/elf_common.h> 34 35 /* 36 * ELF definitions common to all 64-bit architectures. 37 */ 38 39 typedef u_int64_t Elf64_Addr; 40 typedef u_int32_t Elf64_Half; 41 typedef u_int64_t Elf64_Off; 42 typedef int64_t Elf64_Sword; 43 typedef u_int64_t Elf64_Word; 44 typedef u_int64_t Elf64_Size; 45 typedef u_int16_t Elf64_Quarter; 46 typedef Elf64_Half Elf64_Hashelt; 47 48 /* 49 * ELF header. 50 */ 51 52 typedef struct { 53 unsigned char e_ident[EI_NIDENT]; /* File identification. */ 54 Elf64_Quarter e_type; /* File type. */ 55 Elf64_Quarter e_machine; /* Machine architecture. */ 56 Elf64_Half e_version; /* ELF format version. */ 57 Elf64_Addr e_entry; /* Entry point. */ 58 Elf64_Off e_phoff; /* Program header file offset. */ 59 Elf64_Off e_shoff; /* Section header file offset. */ 60 Elf64_Half e_flags; /* Architecture-specific flags. */ 61 Elf64_Quarter e_ehsize; /* Size of ELF header in bytes. */ 62 Elf64_Quarter e_phentsize; /* Size of program header entry. */ 63 Elf64_Quarter e_phnum; /* Number of program header entries. */ 64 Elf64_Quarter e_shentsize; /* Size of section header entry. */ 65 Elf64_Quarter e_shnum; /* Number of section header entries. */ 66 Elf64_Quarter e_shstrndx; /* Section name strings section. */ 67 } Elf64_Ehdr; 68 69 /* 70 * Section header. 71 */ 72 73 typedef struct { 74 Elf64_Half sh_name; /* Section name (index into the 75 section header string table). */ 76 Elf64_Half sh_type; /* Section type. */ 77 Elf64_Size sh_flags; /* Section flags. */ 78 Elf64_Addr sh_addr; /* Address in memory image. */ 79 Elf64_Off sh_offset; /* Offset in file. */ 80 Elf64_Size sh_size; /* Size in bytes. */ 81 Elf64_Half sh_link; /* Index of a related section. */ 82 Elf64_Half sh_info; /* Depends on section type. */ 83 Elf64_Size sh_addralign; /* Alignment in bytes. */ 84 Elf64_Size sh_entsize; /* Size of each entry in section. */ 85 } Elf64_Shdr; 86 87 /* 88 * Program header. 89 */ 90 91 typedef struct { 92 Elf64_Half p_type; /* Entry type. */ 93 Elf64_Half p_flags; /* Access permission flags. */ 94 Elf64_Off p_offset; /* File offset of contents. */ 95 Elf64_Addr p_vaddr; /* Virtual address in memory image. */ 96 Elf64_Addr p_paddr; /* Physical address (not used). */ 97 Elf64_Size p_filesz; /* Size of contents in file. */ 98 Elf64_Size p_memsz; /* Size of contents in memory. */ 99 Elf64_Size p_align; /* Alignment in memory and file. */ 100 } Elf64_Phdr; 101 102 /* 103 * Dynamic structure. The ".dynamic" section contains an array of them. 104 */ 105 106 typedef struct { 107 Elf64_Size d_tag; /* Entry type. */ 108 union { 109 Elf64_Size d_val; /* Integer value. */ 110 Elf64_Addr d_ptr; /* Address value. */ 111 } d_un; 112 } Elf64_Dyn; 113 114 /* 115 * Relocation entries. 116 */ 117 118 /* Relocations that don't need an addend field. */ 119 typedef struct { 120 Elf64_Addr r_offset; /* Location to be relocated. */ 121 Elf64_Size r_info; /* Relocation type and symbol index. */ 122 } Elf64_Rel; 123 124 /* Relocations that need an addend field. */ 125 typedef struct { 126 Elf64_Addr r_offset; /* Location to be relocated. */ 127 Elf64_Size r_info; /* Relocation type and symbol index. */ 128 Elf64_Off r_addend; /* Addend. */ 129 } Elf64_Rela; 130 131 /* Macros for accessing the fields of r_info. */ 132 #define ELF64_R_SYM(info) ((info) >> 32) 133 #define ELF64_R_TYPE(info) ((unsigned char)(info)) 134 135 /* Macro for constructing r_info from field values. */ 136 #define ELF64_R_INFO(sym, type) (((sym) << 32) + (unsigned char)(type)) 137 138 /* 139 * Symbol table entries. 140 */ 141 142 typedef struct { 143 Elf64_Half st_name; /* String table index of name. */ 144 unsigned char st_info; /* Type and binding information. */ 145 unsigned char st_other; /* Reserved (not used). */ 146 Elf64_Quarter st_shndx; /* Section index of symbol. */ 147 Elf64_Addr st_value; /* Symbol value. */ 148 Elf64_Size st_size; /* Size of associated object. */ 149 } Elf64_Sym; 150 151 /* Macros for accessing the fields of st_info. */ 152 #define ELF64_ST_BIND(info) ((info) >> 4) 153 #define ELF64_ST_TYPE(info) ((info) & 0xf) 154 155 /* Macro for constructing st_info from field values. */ 156 #define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf)) 157 158 #endif /* !_SYS_ELF64_H_ */ 159