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 1.10.14.2.2.1 2008/10/02 02:57:24 kensmith Exp $ 27 */ 28 29 #ifndef _SYS_ELF64_H_ 30 #define _SYS_ELF64_H_ 1 31 32 #include "freebsd-elf_common.h" 33 34 /* 35 * ELF definitions common to all 64-bit architectures. 36 */ 37 38 typedef uint64_t Elf64_Addr; 39 typedef uint16_t Elf64_Half; 40 typedef uint64_t Elf64_Off; 41 typedef int32_t Elf64_Sword; 42 typedef int64_t Elf64_Sxword; 43 typedef uint32_t Elf64_Word; 44 typedef uint64_t Elf64_Lword; 45 typedef uint64_t Elf64_Xword; 46 47 /* 48 * Types of dynamic symbol hash table bucket and chain elements. 49 * 50 * This is inconsistent among 64 bit architectures, so a machine dependent 51 * typedef is required. 52 */ 53 54 #ifdef __alpha__ 55 typedef Elf64_Off Elf64_Hashelt; 56 #else 57 typedef Elf64_Word Elf64_Hashelt; 58 #endif 59 60 /* Non-standard class-dependent datatype used for abstraction. */ 61 typedef Elf64_Xword Elf64_Size; 62 typedef Elf64_Sxword Elf64_Ssize; 63 64 /* 65 * ELF header. 66 */ 67 68 typedef struct { 69 unsigned char e_ident[EI_NIDENT]; /* File identification. */ 70 Elf64_Half e_type; /* File type. */ 71 Elf64_Half e_machine; /* Machine architecture. */ 72 Elf64_Word e_version; /* ELF format version. */ 73 Elf64_Addr e_entry; /* Entry point. */ 74 Elf64_Off e_phoff; /* Program header file offset. */ 75 Elf64_Off e_shoff; /* Section header file offset. */ 76 Elf64_Word e_flags; /* Architecture-specific flags. */ 77 Elf64_Half e_ehsize; /* Size of ELF header in bytes. */ 78 Elf64_Half e_phentsize; /* Size of program header entry. */ 79 Elf64_Half e_phnum; /* Number of program header entries. */ 80 Elf64_Half e_shentsize; /* Size of section header entry. */ 81 Elf64_Half e_shnum; /* Number of section header entries. */ 82 Elf64_Half e_shstrndx; /* Section name strings section. */ 83 } Elf64_Ehdr; 84 85 /* 86 * Section header. 87 */ 88 89 typedef struct { 90 Elf64_Word sh_name; /* Section name (index into the 91 section header string table). */ 92 Elf64_Word sh_type; /* Section type. */ 93 Elf64_Xword sh_flags; /* Section flags. */ 94 Elf64_Addr sh_addr; /* Address in memory image. */ 95 Elf64_Off sh_offset; /* Offset in file. */ 96 Elf64_Xword sh_size; /* Size in bytes. */ 97 Elf64_Word sh_link; /* Index of a related section. */ 98 Elf64_Word sh_info; /* Depends on section type. */ 99 Elf64_Xword sh_addralign; /* Alignment in bytes. */ 100 Elf64_Xword sh_entsize; /* Size of each entry in section. */ 101 } Elf64_Shdr; 102 103 /* 104 * Program header. 105 */ 106 107 typedef struct { 108 Elf64_Word p_type; /* Entry type. */ 109 Elf64_Word p_flags; /* Access permission flags. */ 110 Elf64_Off p_offset; /* File offset of contents. */ 111 Elf64_Addr p_vaddr; /* Virtual address in memory image. */ 112 Elf64_Addr p_paddr; /* Physical address (not used). */ 113 Elf64_Xword p_filesz; /* Size of contents in file. */ 114 Elf64_Xword p_memsz; /* Size of contents in memory. */ 115 Elf64_Xword p_align; /* Alignment in memory and file. */ 116 } Elf64_Phdr; 117 118 /* 119 * Dynamic structure. The ".dynamic" section contains an array of them. 120 */ 121 122 typedef struct { 123 Elf64_Sxword d_tag; /* Entry type. */ 124 union { 125 Elf64_Xword d_val; /* Integer value. */ 126 Elf64_Addr d_ptr; /* Address value. */ 127 } d_un; 128 } Elf64_Dyn; 129 130 /* 131 * Relocation entries. 132 */ 133 134 /* Relocations that don't need an addend field. */ 135 typedef struct { 136 Elf64_Addr r_offset; /* Location to be relocated. */ 137 Elf64_Xword r_info; /* Relocation type and symbol index. */ 138 } Elf64_Rel; 139 140 /* Relocations that need an addend field. */ 141 typedef struct { 142 Elf64_Addr r_offset; /* Location to be relocated. */ 143 Elf64_Xword r_info; /* Relocation type and symbol index. */ 144 Elf64_Sxword r_addend; /* Addend. */ 145 } Elf64_Rela; 146 147 /* Macros for accessing the fields of r_info. */ 148 #define ELF64_R_SYM(info) ((info) >> 32) 149 #define ELF64_R_TYPE(info) ((info) & 0xffffffffL) 150 151 /* Macro for constructing r_info from field values. */ 152 #define ELF64_R_INFO(sym, type) (((sym) << 32) + ((type) & 0xffffffffL)) 153 154 #define ELF64_R_TYPE_DATA(info) (((Elf64_Xword)(info)<<32)>>40) 155 #define ELF64_R_TYPE_ID(info) (((Elf64_Xword)(info)<<56)>>56) 156 #define ELF64_R_TYPE_INFO(data, type) \ 157 (((Elf64_Xword)(data)<<8)+(Elf64_Xword)(type)) 158 159 /* 160 * Note entry header 161 */ 162 typedef Elf_Note Elf64_Nhdr; 163 164 /* 165 * Move entry 166 */ 167 typedef struct { 168 Elf64_Lword m_value; /* symbol value */ 169 Elf64_Xword m_info; /* size + index */ 170 Elf64_Xword m_poffset; /* symbol offset */ 171 Elf64_Half m_repeat; /* repeat count */ 172 Elf64_Half m_stride; /* stride info */ 173 } Elf64_Move; 174 175 #define ELF64_M_SYM(info) ((info)>>8) 176 #define ELF64_M_SIZE(info) ((unsigned char)(info)) 177 #define ELF64_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size)) 178 179 /* 180 * Hardware/Software capabilities entry 181 */ 182 typedef struct { 183 Elf64_Xword c_tag; /* how to interpret value */ 184 union { 185 Elf64_Xword c_val; 186 Elf64_Addr c_ptr; 187 } c_un; 188 } Elf64_Cap; 189 190 /* 191 * Symbol table entries. 192 */ 193 194 typedef struct { 195 Elf64_Word st_name; /* String table index of name. */ 196 unsigned char st_info; /* Type and binding information. */ 197 unsigned char st_other; /* Reserved (not used). */ 198 Elf64_Half st_shndx; /* Section index of symbol. */ 199 Elf64_Addr st_value; /* Symbol value. */ 200 Elf64_Xword st_size; /* Size of associated object. */ 201 } Elf64_Sym; 202 203 /* Macros for accessing the fields of st_info. */ 204 #define ELF64_ST_BIND(info) ((info) >> 4) 205 #define ELF64_ST_TYPE(info) ((info) & 0xf) 206 207 /* Macro for constructing st_info from field values. */ 208 #define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf)) 209 210 /* Macro for accessing the fields of st_other. */ 211 #define ELF64_ST_VISIBILITY(oth) ((oth) & 0x3) 212 213 /* Structures used by Sun & GNU-style symbol versioning. */ 214 typedef struct { 215 Elf64_Half vd_version; 216 Elf64_Half vd_flags; 217 Elf64_Half vd_ndx; 218 Elf64_Half vd_cnt; 219 Elf64_Word vd_hash; 220 Elf64_Word vd_aux; 221 Elf64_Word vd_next; 222 } Elf64_Verdef; 223 224 typedef struct { 225 Elf64_Word vda_name; 226 Elf64_Word vda_next; 227 } Elf64_Verdaux; 228 229 typedef struct { 230 Elf64_Half vn_version; 231 Elf64_Half vn_cnt; 232 Elf64_Word vn_file; 233 Elf64_Word vn_aux; 234 Elf64_Word vn_next; 235 } Elf64_Verneed; 236 237 typedef struct { 238 Elf64_Word vna_hash; 239 Elf64_Half vna_flags; 240 Elf64_Half vna_other; 241 Elf64_Word vna_name; 242 Elf64_Word vna_next; 243 } Elf64_Vernaux; 244 245 typedef Elf64_Half Elf64_Versym; 246 247 typedef struct { 248 Elf64_Half si_boundto; /* direct bindings - symbol bound to */ 249 Elf64_Half si_flags; /* per symbol flags */ 250 } Elf64_Syminfo; 251 252 #endif /* !_SYS_ELF64_H_ */ 253