1 /* SPDX-License-Identifier: BSD-2-Clause */ 2 /*- 3 * Copyright (c) 1996-1998 John D. Polstra. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #ifndef _SYS_ELF64_H_ 31 #define _SYS_ELF64_H_ 1 32 33 #include <elf_common.h> 34 #include <stdint.h> 35 36 /* 37 * ELF definitions common to all 64-bit architectures. 38 */ 39 40 typedef uint64_t Elf64_Addr; 41 typedef uint16_t Elf64_Half; 42 typedef uint64_t Elf64_Off; 43 typedef int32_t Elf64_Sword; 44 typedef int64_t Elf64_Sxword; 45 typedef uint32_t Elf64_Word; 46 typedef uint64_t Elf64_Lword; 47 typedef uint64_t Elf64_Xword; 48 49 /* 50 * Types of dynamic symbol hash table bucket and chain elements. 51 * 52 * This is inconsistent among 64 bit architectures, so a machine dependent 53 * typedef is required. 54 */ 55 56 typedef Elf64_Word Elf64_Hashelt; 57 58 /* Non-standard class-dependent datatype used for abstraction. */ 59 typedef Elf64_Xword Elf64_Size; 60 typedef Elf64_Sxword Elf64_Ssize; 61 62 /* 63 * ELF header. 64 */ 65 66 typedef struct { 67 unsigned char e_ident[EI_NIDENT]; /* File identification. */ 68 Elf64_Half e_type; /* File type. */ 69 Elf64_Half e_machine; /* Machine architecture. */ 70 Elf64_Word e_version; /* ELF format version. */ 71 Elf64_Addr e_entry; /* Entry point. */ 72 Elf64_Off e_phoff; /* Program header file offset. */ 73 Elf64_Off e_shoff; /* Section header file offset. */ 74 Elf64_Word e_flags; /* Architecture-specific flags. */ 75 Elf64_Half e_ehsize; /* Size of ELF header in bytes. */ 76 Elf64_Half e_phentsize; /* Size of program header entry. */ 77 Elf64_Half e_phnum; /* Number of program header entries. */ 78 Elf64_Half e_shentsize; /* Size of section header entry. */ 79 Elf64_Half e_shnum; /* Number of section header entries. */ 80 Elf64_Half e_shstrndx; /* Section name strings section. */ 81 } Elf64_Ehdr; 82 83 /* 84 * Section header. 85 */ 86 87 typedef struct { 88 Elf64_Word sh_name; /* Section name (index into the 89 section header string table). */ 90 Elf64_Word sh_type; /* Section type. */ 91 Elf64_Xword sh_flags; /* Section flags. */ 92 Elf64_Addr sh_addr; /* Address in memory image. */ 93 Elf64_Off sh_offset; /* Offset in file. */ 94 Elf64_Xword sh_size; /* Size in bytes. */ 95 Elf64_Word sh_link; /* Index of a related section. */ 96 Elf64_Word sh_info; /* Depends on section type. */ 97 Elf64_Xword sh_addralign; /* Alignment in bytes. */ 98 Elf64_Xword sh_entsize; /* Size of each entry in section. */ 99 } Elf64_Shdr; 100 101 /* 102 * Program header. 103 */ 104 105 typedef struct { 106 Elf64_Word p_type; /* Entry type. */ 107 Elf64_Word p_flags; /* Access permission flags. */ 108 Elf64_Off p_offset; /* File offset of contents. */ 109 Elf64_Addr p_vaddr; /* Virtual address in memory image. */ 110 Elf64_Addr p_paddr; /* Physical address (not used). */ 111 Elf64_Xword p_filesz; /* Size of contents in file. */ 112 Elf64_Xword p_memsz; /* Size of contents in memory. */ 113 Elf64_Xword p_align; /* Alignment in memory and file. */ 114 } Elf64_Phdr; 115 116 /* 117 * Dynamic structure. The ".dynamic" section contains an array of them. 118 */ 119 120 typedef struct { 121 Elf64_Sxword d_tag; /* Entry type. */ 122 union { 123 Elf64_Xword d_val; /* Integer value. */ 124 Elf64_Addr d_ptr; /* Address value. */ 125 } d_un; 126 } Elf64_Dyn; 127 128 /* 129 * Relocation entries. 130 */ 131 132 /* Relocations that don't need an addend field. */ 133 typedef struct { 134 Elf64_Addr r_offset; /* Location to be relocated. */ 135 Elf64_Xword r_info; /* Relocation type and symbol index. */ 136 } Elf64_Rel; 137 138 /* Relocations that need an addend field. */ 139 typedef struct { 140 Elf64_Addr r_offset; /* Location to be relocated. */ 141 Elf64_Xword r_info; /* Relocation type and symbol index. */ 142 Elf64_Sxword r_addend; /* Addend. */ 143 } Elf64_Rela; 144 145 /* Macros for accessing the fields of r_info. */ 146 #define ELF64_R_SYM(info) ((info) >> 32) 147 #define ELF64_R_TYPE(info) ((info) & 0xffffffffL) 148 149 /* Macro for constructing r_info from field values. */ 150 #define ELF64_R_INFO(sym, type) (((sym) << 32) + ((type) & 0xffffffffL)) 151 152 #define ELF64_R_TYPE_DATA(info) (((Elf64_Xword)(info)<<32)>>40) 153 #define ELF64_R_TYPE_ID(info) (((Elf64_Xword)(info)<<56)>>56) 154 #define ELF64_R_TYPE_INFO(data, type) \ 155 (((Elf64_Xword)(data)<<8)+(Elf64_Xword)(type)) 156 157 /* 158 * Note entry header 159 */ 160 typedef Elf_Note Elf64_Nhdr; 161 162 /* 163 * Move entry 164 */ 165 typedef struct { 166 Elf64_Lword m_value; /* symbol value */ 167 Elf64_Xword m_info; /* size + index */ 168 Elf64_Xword m_poffset; /* symbol offset */ 169 Elf64_Half m_repeat; /* repeat count */ 170 Elf64_Half m_stride; /* stride info */ 171 } Elf64_Move; 172 173 #define ELF64_M_SYM(info) ((info)>>8) 174 #define ELF64_M_SIZE(info) ((unsigned char)(info)) 175 #define ELF64_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size)) 176 177 /* 178 * Hardware/Software capabilities entry 179 */ 180 typedef struct { 181 Elf64_Xword c_tag; /* how to interpret value */ 182 union { 183 Elf64_Xword c_val; 184 Elf64_Addr c_ptr; 185 } c_un; 186 } Elf64_Cap; 187 188 /* 189 * Symbol table entries. 190 */ 191 192 typedef struct { 193 Elf64_Word st_name; /* String table index of name. */ 194 unsigned char st_info; /* Type and binding information. */ 195 unsigned char st_other; /* Reserved (not used). */ 196 Elf64_Half st_shndx; /* Section index of symbol. */ 197 Elf64_Addr st_value; /* Symbol value. */ 198 Elf64_Xword st_size; /* Size of associated object. */ 199 } Elf64_Sym; 200 201 /* Macros for accessing the fields of st_info. */ 202 #define ELF64_ST_BIND(info) ((info) >> 4) 203 #define ELF64_ST_TYPE(info) ((info) & 0xf) 204 205 /* Macro for constructing st_info from field values. */ 206 #define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf)) 207 208 /* Macro for accessing the fields of st_other. */ 209 #define ELF64_ST_VISIBILITY(oth) ((oth) & 0x3) 210 211 /* Structures used by Sun & GNU-style symbol versioning. */ 212 typedef struct { 213 Elf64_Half vd_version; 214 Elf64_Half vd_flags; 215 Elf64_Half vd_ndx; 216 Elf64_Half vd_cnt; 217 Elf64_Word vd_hash; 218 Elf64_Word vd_aux; 219 Elf64_Word vd_next; 220 } Elf64_Verdef; 221 222 typedef struct { 223 Elf64_Word vda_name; 224 Elf64_Word vda_next; 225 } Elf64_Verdaux; 226 227 typedef struct { 228 Elf64_Half vn_version; 229 Elf64_Half vn_cnt; 230 Elf64_Word vn_file; 231 Elf64_Word vn_aux; 232 Elf64_Word vn_next; 233 } Elf64_Verneed; 234 235 typedef struct { 236 Elf64_Word vna_hash; 237 Elf64_Half vna_flags; 238 Elf64_Half vna_other; 239 Elf64_Word vna_name; 240 Elf64_Word vna_next; 241 } Elf64_Vernaux; 242 243 typedef Elf64_Half Elf64_Versym; 244 245 typedef struct { 246 Elf64_Half si_boundto; /* direct bindings - symbol bound to */ 247 Elf64_Half si_flags; /* per symbol flags */ 248 } Elf64_Syminfo; 249 250 #endif /* !_SYS_ELF64_H_ */ 251