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 1.17 2006/10/17 05:43:30 jkoshy Exp $ 27 * $DragonFly: src/sys/sys/elf64.h,v 1.10 2008/08/30 17:07:17 swildner 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 uint64_t Elf64_Addr; 45 typedef uint16_t Elf64_Half; 46 typedef uint64_t Elf64_Off; 47 typedef int32_t Elf64_Sword; 48 typedef int64_t Elf64_Sxword; 49 typedef uint32_t Elf64_Word; 50 typedef uint64_t Elf64_Lword; 51 typedef uint64_t Elf64_Xword; 52 53 /* 54 * Types of dynamic symbol hash table bucket and chain elements. 55 * 56 * This is inconsistent among 64 bit architectures, so a machine dependent 57 * typedef is required. 58 */ 59 60 typedef Elf64_Word Elf64_Hashelt; 61 62 /* Non-standard class-dependent datatype used for abstraction. */ 63 typedef Elf64_Xword Elf64_Size; 64 typedef Elf64_Sxword Elf64_Ssize; 65 66 /* 67 * ELF header. 68 */ 69 70 typedef struct { 71 unsigned char e_ident[EI_NIDENT]; /* File identification. */ 72 Elf64_Half e_type; /* File type. */ 73 Elf64_Half e_machine; /* Machine architecture. */ 74 Elf64_Word e_version; /* ELF format version. */ 75 Elf64_Addr e_entry; /* Entry point. */ 76 Elf64_Off e_phoff; /* Program header file offset. */ 77 Elf64_Off e_shoff; /* Section header file offset. */ 78 Elf64_Word e_flags; /* Architecture-specific flags. */ 79 Elf64_Half e_ehsize; /* Size of ELF header in bytes. */ 80 Elf64_Half e_phentsize; /* Size of program header entry. */ 81 Elf64_Half e_phnum; /* Number of program header entries. */ 82 Elf64_Half e_shentsize; /* Size of section header entry. */ 83 Elf64_Half e_shnum; /* Number of section header entries. */ 84 Elf64_Half e_shstrndx; /* Section name strings section. */ 85 } Elf64_Ehdr; 86 87 /* 88 * Section header. 89 */ 90 91 typedef struct { 92 Elf64_Word sh_name; /* Section name (index into the 93 section header string table). */ 94 Elf64_Word sh_type; /* Section type. */ 95 Elf64_Xword sh_flags; /* Section flags. */ 96 Elf64_Addr sh_addr; /* Address in memory image. */ 97 Elf64_Off sh_offset; /* Offset in file. */ 98 Elf64_Xword sh_size; /* Size in bytes. */ 99 Elf64_Word sh_link; /* Index of a related section. */ 100 Elf64_Word sh_info; /* Depends on section type. */ 101 Elf64_Xword sh_addralign; /* Alignment in bytes. */ 102 Elf64_Xword sh_entsize; /* Size of each entry in section. */ 103 } Elf64_Shdr; 104 105 /* 106 * Program header. 107 */ 108 109 typedef struct { 110 Elf64_Word p_type; /* Entry type. */ 111 Elf64_Word p_flags; /* Access permission flags. */ 112 Elf64_Off p_offset; /* File offset of contents. */ 113 Elf64_Addr p_vaddr; /* Virtual address in memory image. */ 114 Elf64_Addr p_paddr; /* Physical address (not used). */ 115 Elf64_Xword p_filesz; /* Size of contents in file. */ 116 Elf64_Xword p_memsz; /* Size of contents in memory. */ 117 Elf64_Xword p_align; /* Alignment in memory and file. */ 118 } Elf64_Phdr; 119 120 /* 121 * Dynamic structure. The ".dynamic" section contains an array of them. 122 */ 123 124 typedef struct { 125 Elf64_Sxword d_tag; /* Entry type. */ 126 union { 127 Elf64_Xword d_val; /* Integer value. */ 128 Elf64_Addr d_ptr; /* Address value. */ 129 } d_un; 130 } Elf64_Dyn; 131 132 /* 133 * Relocation entries. 134 */ 135 136 /* Relocations that don't need an addend field. */ 137 typedef struct { 138 Elf64_Addr r_offset; /* Location to be relocated. */ 139 Elf64_Xword r_info; /* Relocation type and symbol index. */ 140 } Elf64_Rel; 141 142 /* Relocations that 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_Sxword r_addend; /* Addend. */ 147 } Elf64_Rela; 148 149 /* Macros for accessing the fields of r_info. */ 150 #define ELF64_R_SYM(info) ((info) >> 32) 151 #define ELF64_R_TYPE(info) ((info) & 0xffffffffL) 152 153 /* Macro for constructing r_info from field values. */ 154 #define ELF64_R_INFO(sym, type) (((sym) << 32) + ((type) & 0xffffffffL)) 155 156 #define ELF64_R_TYPE_DATA(info) (((Elf64_Xword)(info)<<32)>>40) 157 #define ELF64_R_TYPE_ID(info) (((Elf64_Xword)(info)<<56)>>56) 158 #define ELF64_R_TYPE_INFO(data, type) \ 159 (((Elf64_Xword)(data)<<8)+(Elf64_Xword)(type)) 160 161 /* 162 * Note entry header 163 */ 164 typedef Elf_Note Elf64_Nhdr; 165 166 /* 167 * Move entry 168 */ 169 typedef struct { 170 Elf64_Lword m_value; /* symbol value */ 171 Elf64_Xword m_info; /* size + index */ 172 Elf64_Xword m_poffset; /* symbol offset */ 173 Elf64_Half m_repeat; /* repeat count */ 174 Elf64_Half m_stride; /* stride info */ 175 } Elf64_Move; 176 177 #define ELF64_M_SYM(info) ((info)>>8) 178 #define ELF64_M_SIZE(info) ((unsigned char)(info)) 179 #define ELF64_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size)) 180 181 /* 182 * Hardware/Software capabilities entry 183 */ 184 typedef struct { 185 Elf64_Xword c_tag; /* how to interpret value */ 186 union { 187 Elf64_Xword c_val; 188 Elf64_Addr c_ptr; 189 } c_un; 190 } Elf64_Cap; 191 192 /* 193 * Symbol table entries. 194 */ 195 196 typedef struct { 197 Elf64_Word st_name; /* String table index of name. */ 198 unsigned char st_info; /* Type and binding information. */ 199 unsigned char st_other; /* Reserved (not used). */ 200 Elf64_Half st_shndx; /* Section index of symbol. */ 201 Elf64_Addr st_value; /* Symbol value. */ 202 Elf64_Xword st_size; /* Size of associated object. */ 203 } Elf64_Sym; 204 205 /* Macros for accessing the fields of st_info. */ 206 #define ELF64_ST_BIND(info) ((info) >> 4) 207 #define ELF64_ST_TYPE(info) ((info) & 0xf) 208 209 /* Macro for constructing st_info from field values. */ 210 #define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf)) 211 212 /* Macro for accessing the fields of st_other. */ 213 #define ELF64_ST_VISIBILITY(oth) ((oth) & 0x3) 214 215 /* Structures used by Sun & GNU-style symbol versioning. */ 216 typedef struct { 217 Elf64_Half vd_version; 218 Elf64_Half vd_flags; 219 Elf64_Half vd_ndx; 220 Elf64_Half vd_cnt; 221 Elf64_Word vd_hash; 222 Elf64_Word vd_aux; 223 Elf64_Word vd_next; 224 } Elf64_Verdef; 225 226 typedef struct { 227 Elf64_Word vda_name; 228 Elf64_Word vda_next; 229 } Elf64_Verdaux; 230 231 typedef struct { 232 Elf64_Half vn_version; 233 Elf64_Half vn_cnt; 234 Elf64_Word vn_file; 235 Elf64_Word vn_aux; 236 Elf64_Word vn_next; 237 } Elf64_Verneed; 238 239 typedef struct { 240 Elf64_Word vna_hash; 241 Elf64_Half vna_flags; 242 Elf64_Half vna_other; 243 Elf64_Word vna_name; 244 Elf64_Word vna_next; 245 } Elf64_Vernaux; 246 247 typedef Elf64_Half Elf64_Versym; 248 249 typedef struct { 250 Elf64_Half si_boundto; /* direct bindings - symbol bound to */ 251 Elf64_Half si_flags; /* per symbol flags */ 252 } Elf64_Syminfo; 253 254 #endif /* !_SYS_ELF64_H_ */ 255