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 * Shared object information, found in SHT_MIPS_LIBLIST. 74 */ 75 76typedef struct { 77 Elf32_Word l_name; /* The name of a shared object. */ 78 Elf32_Word l_time_stamp; /* 32-bit timestamp. */ 79 Elf32_Word l_checksum; /* Checksum of visible symbols, sizes. */ 80 Elf32_Word l_version; /* Interface version string index. */ 81 Elf32_Word l_flags; /* Flags (LL_*). */ 82} Elf32_Lib; 83 84/* 85 * Section header. 86 */ 87 88typedef struct { 89 Elf32_Word sh_name; /* Section name (index into the 90 section header string table). */ 91 Elf32_Word sh_type; /* Section type. */ 92 Elf32_Word sh_flags; /* Section flags. */ 93 Elf32_Addr sh_addr; /* Address in memory image. */ 94 Elf32_Off sh_offset; /* Offset in file. */ 95 Elf32_Word sh_size; /* Size in bytes. */ 96 Elf32_Word sh_link; /* Index of a related section. */ 97 Elf32_Word sh_info; /* Depends on section type. */ 98 Elf32_Word sh_addralign; /* Alignment in bytes. */ 99 Elf32_Word sh_entsize; /* Size of each entry in section. */ 100} Elf32_Shdr; 101 102/* 103 * Program header. 104 */ 105 106typedef struct { 107 Elf32_Word p_type; /* Entry type. */ 108 Elf32_Off p_offset; /* File offset of contents. */ 109 Elf32_Addr p_vaddr; /* Virtual address in memory image. */ 110 Elf32_Addr p_paddr; /* Physical address (not used). */ 111 Elf32_Word p_filesz; /* Size of contents in file. */ 112 Elf32_Word p_memsz; /* Size of contents in memory. */ 113 Elf32_Word p_flags; /* Access permission flags. */ 114 Elf32_Word p_align; /* Alignment in memory and file. */ 115} Elf32_Phdr; 116 117/* 118 * Dynamic structure. The ".dynamic" section contains an array of them. 119 */ 120 121typedef struct { 122 Elf32_Sword d_tag; /* Entry type. */ 123 union { 124 Elf32_Word d_val; /* Integer value. */ 125 Elf32_Addr d_ptr; /* Address value. */ 126 } d_un; 127} Elf32_Dyn; 128 129/* 130 * Relocation entries. 131 */ 132 133/* Relocations that don't need an addend field. */ 134typedef struct { 135 Elf32_Addr r_offset; /* Location to be relocated. */ 136 Elf32_Word r_info; /* Relocation type and symbol index. */ 137} Elf32_Rel; 138 139/* Relocations that need an addend field. */ 140typedef struct { 141 Elf32_Addr r_offset; /* Location to be relocated. */ 142 Elf32_Word r_info; /* Relocation type and symbol index. */ 143 Elf32_Sword r_addend; /* Addend. */ 144} Elf32_Rela; 145 146/* Macros for accessing the fields of r_info. */ 147#define ELF32_R_SYM(info) ((info) >> 8) 148#define ELF32_R_TYPE(info) ((unsigned char)(info)) 149 150/* Macro for constructing r_info from field values. */ 151#define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type)) 152 153/* 154 * Note entry header 155 */ 156typedef Elf_Note Elf32_Nhdr; 157 158/* 159 * Move entry 160 */ 161typedef struct { 162 Elf32_Lword m_value; /* symbol value */ 163 Elf32_Word m_info; /* size + index */ 164 Elf32_Word m_poffset; /* symbol offset */ 165 Elf32_Half m_repeat; /* repeat count */ 166 Elf32_Half m_stride; /* stride info */ 167} Elf32_Move; 168 169/* 170 * The macros compose and decompose values for Move.r_info 171 * 172 * sym = ELF32_M_SYM(M.m_info) 173 * size = ELF32_M_SIZE(M.m_info) 174 * M.m_info = ELF32_M_INFO(sym, size) 175 */ 176#define ELF32_M_SYM(info) ((info)>>8) 177#define ELF32_M_SIZE(info) ((unsigned char)(info)) 178#define ELF32_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size)) 179 180/* 181 * Hardware/Software capabilities entry 182 */ 183typedef struct { 184 Elf32_Word c_tag; /* how to interpret value */ 185 union { 186 Elf32_Word c_val; 187 Elf32_Addr c_ptr; 188 } c_un; 189} Elf32_Cap; 190 191/* 192 * Symbol table entries. 193 */ 194 195typedef struct { 196 Elf32_Word st_name; /* String table index of name. */ 197 Elf32_Addr st_value; /* Symbol value. */ 198 Elf32_Word st_size; /* Size of associated object. */ 199 unsigned char st_info; /* Type and binding information. */ 200 unsigned char st_other; /* Reserved (not used). */ 201 Elf32_Half st_shndx; /* Section index of symbol. */ 202} Elf32_Sym; 203 204/* Macros for accessing the fields of st_info. */ 205#define ELF32_ST_BIND(info) ((info) >> 4) 206#define ELF32_ST_TYPE(info) ((info) & 0xf) 207 208/* Macro for constructing st_info from field values. */ 209#define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf)) 210 211/* Macro for accessing the fields of st_other. */ 212#define ELF32_ST_VISIBILITY(oth) ((oth) & 0x3) 213 214/* Structures used by Sun & GNU symbol versioning. */ 215typedef struct 216{ 217 Elf32_Half vd_version; 218 Elf32_Half vd_flags; 219 Elf32_Half vd_ndx; 220 Elf32_Half vd_cnt; 221 Elf32_Word vd_hash; 222 Elf32_Word vd_aux; 223 Elf32_Word vd_next; 224} Elf32_Verdef; 225 226typedef struct 227{ 228 Elf32_Word vda_name; 229 Elf32_Word vda_next; 230} Elf32_Verdaux; 231 232typedef struct 233{ 234 Elf32_Half vn_version; 235 Elf32_Half vn_cnt; 236 Elf32_Word vn_file; 237 Elf32_Word vn_aux; 238 Elf32_Word vn_next; 239} Elf32_Verneed; 240 241typedef struct 242{ 243 Elf32_Word vna_hash; 244 Elf32_Half vna_flags; 245 Elf32_Half vna_other; 246 Elf32_Word vna_name; 247 Elf32_Word vna_next; 248} Elf32_Vernaux; 249 250typedef Elf32_Half Elf32_Versym; 251 252typedef struct { 253 Elf32_Half si_boundto; /* direct bindings - symbol bound to */ 254 Elf32_Half si_flags; /* per symbol flags */ 255} Elf32_Syminfo; 256 257#endif /* !_SYS_ELF32_H_ */ 258