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 /*- 16 * Copyright (c) 1996-1998 John D. Polstra. 17 * All rights reserved. 18 * 19 * Redistribution and use in source and binary forms, with or without 20 * modification, are permitted provided that the following conditions 21 * are met: 22 * 1. Redistributions of source code must retain the above copyright 23 * notice, this list of conditions and the following disclaimer. 24 * 2. Redistributions in binary form must reproduce the above copyright 25 * notice, this list of conditions and the following disclaimer in the 26 * documentation and/or other materials provided with the distribution. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * $FreeBSD: src/sys/sys/elf32.h,v 1.8.14.2 2007/12/03 21:30:36 marius Exp $ 41 */ 42 43 #ifndef _SYS_ELF32_H_ 44 #define _SYS_ELF32_H_ 1 45 46 47 /* 48 * ELF definitions common to all 32-bit architectures. 49 */ 50 51 typedef UINT32 Elf32_Addr; 52 typedef UINT16 Elf32_Half; 53 typedef UINT32 Elf32_Off; 54 typedef INT32 Elf32_Sword; 55 typedef UINT32 Elf32_Word; 56 typedef UINT64 Elf32_Lword; 57 58 typedef Elf32_Word Elf32_Hashelt; 59 60 /* Non-standard class-dependent datatype used for abstraction. */ 61 typedef Elf32_Word Elf32_Size; 62 typedef Elf32_Sword Elf32_Ssize; 63 64 /* 65 * ELF header. 66 */ 67 68 typedef struct { 69 unsigned char e_ident[EI_NIDENT]; /* File identification. */ 70 Elf32_Half e_type; /* File type. */ 71 Elf32_Half e_machine; /* Machine architecture. */ 72 Elf32_Word e_version; /* ELF format version. */ 73 Elf32_Addr e_entry; /* Entry point. */ 74 Elf32_Off e_phoff; /* Program header file offset. */ 75 Elf32_Off e_shoff; /* Section header file offset. */ 76 Elf32_Word e_flags; /* Architecture-specific flags. */ 77 Elf32_Half e_ehsize; /* Size of ELF header in bytes. */ 78 Elf32_Half e_phentsize; /* Size of program header entry. */ 79 Elf32_Half e_phnum; /* Number of program header entries. */ 80 Elf32_Half e_shentsize; /* Size of section header entry. */ 81 Elf32_Half e_shnum; /* Number of section header entries. */ 82 Elf32_Half e_shstrndx; /* Section name strings section. */ 83 } Elf32_Ehdr; 84 85 /* 86 * Section header. 87 */ 88 89 typedef struct { 90 Elf32_Word sh_name; /* Section name (index into the 91 section header string table). */ 92 Elf32_Word sh_type; /* Section type. */ 93 Elf32_Word sh_flags; /* Section flags. */ 94 Elf32_Addr sh_addr; /* Address in memory image. */ 95 Elf32_Off sh_offset; /* Offset in file. */ 96 Elf32_Word sh_size; /* Size in bytes. */ 97 Elf32_Word sh_link; /* Index of a related section. */ 98 Elf32_Word sh_info; /* Depends on section type. */ 99 Elf32_Word sh_addralign; /* Alignment in bytes. */ 100 Elf32_Word sh_entsize; /* Size of each entry in section. */ 101 } Elf32_Shdr; 102 103 /* 104 * Program header. 105 */ 106 107 typedef struct { 108 Elf32_Word p_type; /* Entry type. */ 109 Elf32_Off p_offset; /* File offset of contents. */ 110 Elf32_Addr p_vaddr; /* Virtual address in memory image. */ 111 Elf32_Addr p_paddr; /* Physical address (not used). */ 112 Elf32_Word p_filesz; /* Size of contents in file. */ 113 Elf32_Word p_memsz; /* Size of contents in memory. */ 114 Elf32_Word p_flags; /* Access permission flags. */ 115 Elf32_Word p_align; /* Alignment in memory and file. */ 116 } Elf32_Phdr; 117 118 /* 119 * Dynamic structure. The ".dynamic" section contains an array of them. 120 */ 121 122 typedef struct { 123 Elf32_Sword d_tag; /* Entry type. */ 124 union { 125 Elf32_Word d_val; /* Integer value. */ 126 Elf32_Addr d_ptr; /* Address value. */ 127 } d_un; 128 } Elf32_Dyn; 129 130 /* 131 * Relocation entries. 132 */ 133 134 /* Relocations that don't need an addend field. */ 135 typedef struct { 136 Elf32_Addr r_offset; /* Location to be relocated. */ 137 Elf32_Word r_info; /* Relocation type and symbol index. */ 138 } Elf32_Rel; 139 140 /* Relocations that need an addend field. */ 141 typedef struct { 142 Elf32_Addr r_offset; /* Location to be relocated. */ 143 Elf32_Word r_info; /* Relocation type and symbol index. */ 144 Elf32_Sword r_addend; /* Addend. */ 145 } Elf32_Rela; 146 147 /* Macros for accessing the fields of r_info. */ 148 #define ELF32_R_SYM(info) ((info) >> 8) 149 #define ELF32_R_TYPE(info) ((unsigned char)(info)) 150 151 /* Macro for constructing r_info from field values. */ 152 #define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type)) 153 154 /* 155 * Note entry header 156 */ 157 typedef Elf_Note Elf32_Nhdr; 158 159 /* 160 * Move entry 161 */ 162 typedef struct { 163 Elf32_Lword m_value; /* symbol value */ 164 Elf32_Word m_info; /* size + index */ 165 Elf32_Word m_poffset; /* symbol offset */ 166 Elf32_Half m_repeat; /* repeat count */ 167 Elf32_Half m_stride; /* stride info */ 168 } Elf32_Move; 169 170 /* 171 * The macros compose and decompose values for Move.r_info 172 * 173 * sym = ELF32_M_SYM(M.m_info) 174 * size = ELF32_M_SIZE(M.m_info) 175 * M.m_info = ELF32_M_INFO(sym, size) 176 */ 177 #define ELF32_M_SYM(info) ((info)>>8) 178 #define ELF32_M_SIZE(info) ((unsigned char)(info)) 179 #define ELF32_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size)) 180 181 /* 182 * Hardware/Software capabilities entry 183 */ 184 typedef struct { 185 Elf32_Word c_tag; /* how to interpret value */ 186 union { 187 Elf32_Word c_val; 188 Elf32_Addr c_ptr; 189 } c_un; 190 } Elf32_Cap; 191 192 /* 193 * Symbol table entries. 194 */ 195 196 typedef struct { 197 Elf32_Word st_name; /* String table index of name. */ 198 Elf32_Addr st_value; /* Symbol value. */ 199 Elf32_Word st_size; /* Size of associated object. */ 200 unsigned char st_info; /* Type and binding information. */ 201 unsigned char st_other; /* Reserved (not used). */ 202 Elf32_Half st_shndx; /* Section index of symbol. */ 203 } Elf32_Sym; 204 205 /* Macros for accessing the fields of st_info. */ 206 #define ELF32_ST_BIND(info) ((info) >> 4) 207 #define ELF32_ST_TYPE(info) ((info) & 0xf) 208 209 /* Macro for constructing st_info from field values. */ 210 #define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf)) 211 212 /* Macro for accessing the fields of st_other. */ 213 #define ELF32_ST_VISIBILITY(oth) ((oth) & 0x3) 214 215 /* Structures used by Sun & GNU symbol versioning. */ 216 typedef struct 217 { 218 Elf32_Half vd_version; 219 Elf32_Half vd_flags; 220 Elf32_Half vd_ndx; 221 Elf32_Half vd_cnt; 222 Elf32_Word vd_hash; 223 Elf32_Word vd_aux; 224 Elf32_Word vd_next; 225 } Elf32_Verdef; 226 227 typedef struct 228 { 229 Elf32_Word vda_name; 230 Elf32_Word vda_next; 231 } Elf32_Verdaux; 232 233 typedef struct 234 { 235 Elf32_Half vn_version; 236 Elf32_Half vn_cnt; 237 Elf32_Word vn_file; 238 Elf32_Word vn_aux; 239 Elf32_Word vn_next; 240 } Elf32_Verneed; 241 242 typedef struct 243 { 244 Elf32_Word vna_hash; 245 Elf32_Half vna_flags; 246 Elf32_Half vna_other; 247 Elf32_Word vna_name; 248 Elf32_Word vna_next; 249 } Elf32_Vernaux; 250 251 typedef Elf32_Half Elf32_Versym; 252 253 typedef struct { 254 Elf32_Half si_boundto; /* direct bindings - symbol bound to */ 255 Elf32_Half si_flags; /* per symbol flags */ 256 } Elf32_Syminfo; 257 258 #endif /* !_SYS_ELF32_H_ */ 259
