1 /** @file 2 Ported ELF include files from FreeBSD 3 4 Copyright (c) 2009 - 2010, Apple Inc. All rights reserved.<BR> 5 This program and the accompanying materials 6 are licensed and made available under the terms and conditions of the BSD License 7 which accompanies this distribution. The full text of the license may be found at 8 http://opensource.org/licenses/bsd-license.php 9 10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 12 13 **/ 14 /*- 15 * Copyright (c) 1996-1998 John D. Polstra. 16 * All rights reserved. 17 * 18 * Redistribution and use in source and binary forms, with or without 19 * modification, are permitted provided that the following conditions 20 * are met: 21 * 1. Redistributions of source code must retain the above copyright 22 * notice, this list of conditions and the following disclaimer. 23 * 2. Redistributions in binary form must reproduce the above copyright 24 * notice, this list of conditions and the following disclaimer in the 25 * documentation and/or other materials provided with the distribution. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * $FreeBSD: src/sys/sys/elf64.h,v 1.10.14.2 2007/12/03 21:30:36 marius Exp $ 40 */ 41 42 #ifndef _SYS_ELF64_H_ 43 #define _SYS_ELF64_H_ 1 44 45 46 /* 47 * ELF definitions common to all 64-bit architectures. 48 */ 49 50 typedef UINT64 Elf64_Addr; 51 typedef UINT16 Elf64_Half; 52 typedef UINT64 Elf64_Off; 53 typedef INT32 Elf64_Sword; 54 typedef INT64 Elf64_Sxword; 55 typedef UINT32 Elf64_Word; 56 typedef UINT64 Elf64_Lword; 57 typedef UINT64 Elf64_Xword; 58 59 /* 60 * Types of dynamic symbol hash table bucket and chain elements. 61 * 62 * This is inconsistent among 64 bit architectures, so a machine dependent 63 * typedef is required. 64 */ 65 66 typedef Elf64_Word Elf64_Hashelt; 67 68 /* Non-standard class-dependent datatype used for abstraction. */ 69 typedef Elf64_Xword Elf64_Size; 70 typedef Elf64_Sxword Elf64_Ssize; 71 72 /* 73 * ELF header. 74 */ 75 76 typedef struct { 77 unsigned char e_ident[EI_NIDENT]; /* File identification. */ 78 Elf64_Half e_type; /* File type. */ 79 Elf64_Half e_machine; /* Machine architecture. */ 80 Elf64_Word e_version; /* ELF format version. */ 81 Elf64_Addr e_entry; /* Entry point. */ 82 Elf64_Off e_phoff; /* Program header file offset. */ 83 Elf64_Off e_shoff; /* Section header file offset. */ 84 Elf64_Word e_flags; /* Architecture-specific flags. */ 85 Elf64_Half e_ehsize; /* Size of ELF header in bytes. */ 86 Elf64_Half e_phentsize; /* Size of program header entry. */ 87 Elf64_Half e_phnum; /* Number of program header entries. */ 88 Elf64_Half e_shentsize; /* Size of section header entry. */ 89 Elf64_Half e_shnum; /* Number of section header entries. */ 90 Elf64_Half e_shstrndx; /* Section name strings section. */ 91 } Elf64_Ehdr; 92 93 /* 94 * Section header. 95 */ 96 97 typedef struct { 98 Elf64_Word sh_name; /* Section name (index into the 99 section header string table). */ 100 Elf64_Word sh_type; /* Section type. */ 101 Elf64_Xword sh_flags; /* Section flags. */ 102 Elf64_Addr sh_addr; /* Address in memory image. */ 103 Elf64_Off sh_offset; /* Offset in file. */ 104 Elf64_Xword sh_size; /* Size in bytes. */ 105 Elf64_Word sh_link; /* Index of a related section. */ 106 Elf64_Word sh_info; /* Depends on section type. */ 107 Elf64_Xword sh_addralign; /* Alignment in bytes. */ 108 Elf64_Xword sh_entsize; /* Size of each entry in section. */ 109 } Elf64_Shdr; 110 111 /* 112 * Program header. 113 */ 114 115 typedef struct { 116 Elf64_Word p_type; /* Entry type. */ 117 Elf64_Word p_flags; /* Access permission flags. */ 118 Elf64_Off p_offset; /* File offset of contents. */ 119 Elf64_Addr p_vaddr; /* Virtual address in memory image. */ 120 Elf64_Addr p_paddr; /* Physical address (not used). */ 121 Elf64_Xword p_filesz; /* Size of contents in file. */ 122 Elf64_Xword p_memsz; /* Size of contents in memory. */ 123 Elf64_Xword p_align; /* Alignment in memory and file. */ 124 } Elf64_Phdr; 125 126 /* 127 * Dynamic structure. The ".dynamic" section contains an array of them. 128 */ 129 130 typedef struct { 131 Elf64_Sxword d_tag; /* Entry type. */ 132 union { 133 Elf64_Xword d_val; /* Integer value. */ 134 Elf64_Addr d_ptr; /* Address value. */ 135 } d_un; 136 } Elf64_Dyn; 137 138 /* 139 * Relocation entries. 140 */ 141 142 /* Relocations that don't need an addend field. */ 143 typedef struct { 144 Elf64_Addr r_offset; /* Location to be relocated. */ 145 Elf64_Xword r_info; /* Relocation type and symbol index. */ 146 } Elf64_Rel; 147 148 /* Relocations that need an addend field. */ 149 typedef struct { 150 Elf64_Addr r_offset; /* Location to be relocated. */ 151 Elf64_Xword r_info; /* Relocation type and symbol index. */ 152 Elf64_Sxword r_addend; /* Addend. */ 153 } Elf64_Rela; 154 155 /* Macros for accessing the fields of r_info. */ 156 #define ELF64_R_SYM(info) ((info) >> 32) 157 #define ELF64_R_TYPE(info) ((info) & 0xffffffffL) 158 159 /* Macro for constructing r_info from field values. */ 160 #define ELF64_R_INFO(sym, type) (((sym) << 32) + ((type) & 0xffffffffL)) 161 162 #define ELF64_R_TYPE_DATA(info) (((Elf64_Xword)(info)<<32)>>40) 163 #define ELF64_R_TYPE_ID(info) (((Elf64_Xword)(info)<<56)>>56) 164 #define ELF64_R_TYPE_INFO(data, type) \ 165 (((Elf64_Xword)(data)<<8)+(Elf64_Xword)(type)) 166 167 /* 168 * Note entry header 169 */ 170 typedef Elf_Note Elf64_Nhdr; 171 172 /* 173 * Move entry 174 */ 175 typedef struct { 176 Elf64_Lword m_value; /* symbol value */ 177 Elf64_Xword m_info; /* size + index */ 178 Elf64_Xword m_poffset; /* symbol offset */ 179 Elf64_Half m_repeat; /* repeat count */ 180 Elf64_Half m_stride; /* stride info */ 181 } Elf64_Move; 182 183 #define ELF64_M_SYM(info) ((info)>>8) 184 #define ELF64_M_SIZE(info) ((unsigned char)(info)) 185 #define ELF64_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size)) 186 187 /* 188 * Hardware/Software capabilities entry 189 */ 190 typedef struct { 191 Elf64_Xword c_tag; /* how to interpret value */ 192 union { 193 Elf64_Xword c_val; 194 Elf64_Addr c_ptr; 195 } c_un; 196 } Elf64_Cap; 197 198 /* 199 * Symbol table entries. 200 */ 201 202 typedef struct { 203 Elf64_Word st_name; /* String table index of name. */ 204 unsigned char st_info; /* Type and binding information. */ 205 unsigned char st_other; /* Reserved (not used). */ 206 Elf64_Half st_shndx; /* Section index of symbol. */ 207 Elf64_Addr st_value; /* Symbol value. */ 208 Elf64_Xword st_size; /* Size of associated object. */ 209 } Elf64_Sym; 210 211 /* Macros for accessing the fields of st_info. */ 212 #define ELF64_ST_BIND(info) ((info) >> 4) 213 #define ELF64_ST_TYPE(info) ((info) & 0xf) 214 215 /* Macro for constructing st_info from field values. */ 216 #define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf)) 217 218 /* Macro for accessing the fields of st_other. */ 219 #define ELF64_ST_VISIBILITY(oth) ((oth) & 0x3) 220 221 /* Structures used by Sun & GNU-style symbol versioning. */ 222 typedef struct { 223 Elf64_Half vd_version; 224 Elf64_Half vd_flags; 225 Elf64_Half vd_ndx; 226 Elf64_Half vd_cnt; 227 Elf64_Word vd_hash; 228 Elf64_Word vd_aux; 229 Elf64_Word vd_next; 230 } Elf64_Verdef; 231 232 typedef struct { 233 Elf64_Word vda_name; 234 Elf64_Word vda_next; 235 } Elf64_Verdaux; 236 237 typedef struct { 238 Elf64_Half vn_version; 239 Elf64_Half vn_cnt; 240 Elf64_Word vn_file; 241 Elf64_Word vn_aux; 242 Elf64_Word vn_next; 243 } Elf64_Verneed; 244 245 typedef struct { 246 Elf64_Word vna_hash; 247 Elf64_Half vna_flags; 248 Elf64_Half vna_other; 249 Elf64_Word vna_name; 250 Elf64_Word vna_next; 251 } Elf64_Vernaux; 252 253 typedef Elf64_Half Elf64_Versym; 254 255 typedef struct { 256 Elf64_Half si_boundto; /* direct bindings - symbol bound to */ 257 Elf64_Half si_flags; /* per symbol flags */ 258 } Elf64_Syminfo; 259 260 #endif /* !_SYS_ELF64_H_ */ 261