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 * $FreeBSD$ 27 */ 28 29#ifndef _SYS_ELF32_H_ 30#define _SYS_ELF32_H_ 1 31 32#include <sys/elf_common.h> 33 34/* 35 * ELF definitions common to all 32-bit architectures. 36 */ 37 38typedef uint32_t Elf32_Addr; 39typedef uint16_t Elf32_Half; 40typedef uint32_t Elf32_Off; 41typedef int32_t Elf32_Sword; 42typedef uint32_t Elf32_Word; 43typedef uint64_t Elf32_Lword; 44 45typedef Elf32_Word Elf32_Hashelt; 46 47/* Non-standard class-dependent datatype used for abstraction. */ 48typedef Elf32_Word Elf32_Size; 49typedef Elf32_Sword Elf32_Ssize; 50 51/* 52 * ELF header. 53 */ 54 55typedef struct { 56 unsigned char e_ident[EI_NIDENT]; /* File identification. */ 57 Elf32_Half e_type; /* File type. */ 58 Elf32_Half e_machine; /* Machine architecture. */ 59 Elf32_Word e_version; /* ELF format version. */ 60 Elf32_Addr e_entry; /* Entry point. */ 61 Elf32_Off e_phoff; /* Program header file offset. */ 62 Elf32_Off e_shoff; /* Section header file offset. */ 63 Elf32_Word e_flags; /* Architecture-specific flags. */ 64 Elf32_Half e_ehsize; /* Size of ELF header in bytes. */ 65 Elf32_Half e_phentsize; /* Size of program header entry. */ 66 Elf32_Half e_phnum; /* Number of program header entries. */ 67 Elf32_Half e_shentsize; /* Size of section header entry. */ 68 Elf32_Half e_shnum; /* Number of section header entries. */ 69 Elf32_Half e_shstrndx; /* Section name strings section. */ 70} Elf32_Ehdr; 71 72/* 73 * Section header. 74 */ 75 76typedef struct { 77 Elf32_Word sh_name; /* Section name (index into the 78 section header string table). */ 79 Elf32_Word sh_type; /* Section type. */ 80 Elf32_Word sh_flags; /* Section flags. */ 81 Elf32_Addr sh_addr; /* Address in memory image. */ 82 Elf32_Off sh_offset; /* Offset in file. */ 83 Elf32_Word sh_size; /* Size in bytes. */ 84 Elf32_Word sh_link; /* Index of a related section. */ 85 Elf32_Word sh_info; /* Depends on section type. */ 86 Elf32_Word sh_addralign; /* Alignment in bytes. */ 87 Elf32_Word sh_entsize; /* Size of each entry in section. */ 88} Elf32_Shdr; 89 90/* 91 * Program header. 92 */ 93 94typedef struct { 95 Elf32_Word p_type; /* Entry type. */ 96 Elf32_Off p_offset; /* File offset of contents. */ 97 Elf32_Addr p_vaddr; /* Virtual address in memory image. */ 98 Elf32_Addr p_paddr; /* Physical address (not used). */ 99 Elf32_Word p_filesz; /* Size of contents in file. */ 100 Elf32_Word p_memsz; /* Size of contents in memory. */ 101 Elf32_Word p_flags; /* Access permission flags. */ 102 Elf32_Word p_align; /* Alignment in memory and file. */ 103} Elf32_Phdr; 104 105/* 106 * Dynamic structure. The ".dynamic" section contains an array of them. 107 */ 108 109typedef struct { 110 Elf32_Sword d_tag; /* Entry type. */ 111 union { 112 Elf32_Word d_val; /* Integer value. */ 113 Elf32_Addr d_ptr; /* Address value. */ 114 } d_un; 115} Elf32_Dyn; 116 117/* 118 * Relocation entries. 119 */ 120 121/* Relocations that don't need an addend field. */ 122typedef struct { 123 Elf32_Addr r_offset; /* Location to be relocated. */ 124 Elf32_Word r_info; /* Relocation type and symbol index. */ 125} Elf32_Rel; 126 127/* Relocations that need an addend field. */ 128typedef struct { 129 Elf32_Addr r_offset; /* Location to be relocated. */ 130 Elf32_Word r_info; /* Relocation type and symbol index. */ 131 Elf32_Sword r_addend; /* Addend. */ 132} Elf32_Rela; 133 134/* Macros for accessing the fields of r_info. */ 135#define ELF32_R_SYM(info) ((info) >> 8) 136#define ELF32_R_TYPE(info) ((unsigned char)(info)) 137 138/* Macro for constructing r_info from field values. */ 139#define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type)) 140 141/* 142 * Note entry header 143 */ 144typedef Elf_Note Elf32_Nhdr; 145 146/* 147 * Move entry 148 */ 149typedef struct { 150 Elf32_Lword m_value; /* symbol value */ 151 Elf32_Word m_info; /* size + index */ 152 Elf32_Word m_poffset; /* symbol offset */ 153 Elf32_Half m_repeat; /* repeat count */ 154 Elf32_Half m_stride; /* stride info */ 155} Elf32_Move; 156 157/* 158 * The macros compose and decompose values for Move.r_info 159 * 160 * sym = ELF32_M_SYM(M.m_info) 161 * size = ELF32_M_SIZE(M.m_info) 162 * M.m_info = ELF32_M_INFO(sym, size) 163 */ 164#define ELF32_M_SYM(info) ((info)>>8) 165#define ELF32_M_SIZE(info) ((unsigned char)(info)) 166#define ELF32_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size)) 167 168/* 169 * Hardware/Software capabilities entry 170 */ 171typedef struct { 172 Elf32_Word c_tag; /* how to interpret value */ 173 union { 174 Elf32_Word c_val; 175 Elf32_Addr c_ptr; 176 } c_un; 177} Elf32_Cap; 178 179/* 180 * Symbol table entries. 181 */ 182 183typedef struct { 184 Elf32_Word st_name; /* String table index of name. */ 185 Elf32_Addr st_value; /* Symbol value. */ 186 Elf32_Word st_size; /* Size of associated object. */ 187 unsigned char st_info; /* Type and binding information. */ 188 unsigned char st_other; /* Reserved (not used). */ 189 Elf32_Half st_shndx; /* Section index of symbol. */ 190} Elf32_Sym; 191 192/* Macros for accessing the fields of st_info. */ 193#define ELF32_ST_BIND(info) ((info) >> 4) 194#define ELF32_ST_TYPE(info) ((info) & 0xf) 195 196/* Macro for constructing st_info from field values. */ 197#define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf)) 198 199/* Macro for accessing the fields of st_other. */ 200#define ELF32_ST_VISIBILITY(oth) ((oth) & 0x3) 201 202/* Structures used by Sun & GNU symbol versioning. */ 203typedef struct 204{ 205 Elf32_Half vd_version; 206 Elf32_Half vd_flags; 207 Elf32_Half vd_ndx; 208 Elf32_Half vd_cnt; 209 Elf32_Word vd_hash; 210 Elf32_Word vd_aux; 211 Elf32_Word vd_next; 212} Elf32_Verdef; 213 214typedef struct 215{ 216 Elf32_Word vda_name; 217 Elf32_Word vda_next; 218} Elf32_Verdaux; 219 220typedef struct 221{ 222 Elf32_Half vn_version; 223 Elf32_Half vn_cnt; 224 Elf32_Word vn_file; 225 Elf32_Word vn_aux; 226 Elf32_Word vn_next; 227} Elf32_Verneed; 228 229typedef struct 230{ 231 Elf32_Word vna_hash; 232 Elf32_Half vna_flags; 233 Elf32_Half vna_other; 234 Elf32_Word vna_name; 235 Elf32_Word vna_next; 236} Elf32_Vernaux; 237 238typedef Elf32_Half Elf32_Versym; 239 240typedef struct { 241 Elf32_Half si_boundto; /* direct bindings - symbol bound to */ 242 Elf32_Half si_flags; /* per symbol flags */ 243} Elf32_Syminfo; 244 245#endif /* !_SYS_ELF32_H_ */ 246