1 /*- 2 * Copyright (c) 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/elf_common.h,v 1.5.2.3 2001/02/28 02:30:46 obrien Exp $ 27 * $DragonFly: src/sys/sys/elf_common.h,v 1.2 2003/06/17 04:28:58 dillon Exp $ 28 */ 29 30 #ifndef _SYS_ELF_COMMON_H_ 31 #define _SYS_ELF_COMMON_H_ 1 32 33 /* 34 * ELF definitions that are independent of architecture or word size. 35 */ 36 37 /* 38 * Note header. The ".note" section contains an array of notes. Each 39 * begins with this header, aligned to a word boundary. Immediately 40 * following the note header is n_namesz bytes of name, padded to the 41 * next word boundary. Then comes n_descsz bytes of descriptor, again 42 * padded to a word boundary. The values of n_namesz and n_descsz do 43 * not include the padding. 44 */ 45 46 typedef struct { 47 u_int32_t n_namesz; /* Length of name. */ 48 u_int32_t n_descsz; /* Length of descriptor. */ 49 u_int32_t n_type; /* Type of this note. */ 50 } Elf_Note; 51 52 /* Indexes into the e_ident array. Keep synced with 53 http://www.sco.com/developer/gabi/ch4.eheader.html */ 54 #define EI_MAG0 0 /* Magic number, byte 0. */ 55 #define EI_MAG1 1 /* Magic number, byte 1. */ 56 #define EI_MAG2 2 /* Magic number, byte 2. */ 57 #define EI_MAG3 3 /* Magic number, byte 3. */ 58 #define EI_CLASS 4 /* Class of machine. */ 59 #define EI_DATA 5 /* Data format. */ 60 #define EI_VERSION 6 /* ELF format version. */ 61 #define EI_OSABI 7 /* Operating system / ABI identification */ 62 #define EI_ABIVERSION 8 /* ABI version */ 63 #define OLD_EI_BRAND 8 /* Start of architecture identification. */ 64 #define EI_PAD 9 /* Start of padding (per SVR4 ABI). */ 65 #define EI_NIDENT 16 /* Size of e_ident array. */ 66 67 /* Values for the magic number bytes. */ 68 #define ELFMAG0 0x7f 69 #define ELFMAG1 'E' 70 #define ELFMAG2 'L' 71 #define ELFMAG3 'F' 72 73 /* Values for e_ident[EI_VERSION] and e_version. */ 74 #define EV_NONE 0 75 #define EV_CURRENT 1 76 77 /* Values for e_ident[EI_CLASS]. */ 78 #define ELFCLASSNONE 0 /* Unknown class. */ 79 #define ELFCLASS32 1 /* 32-bit architecture. */ 80 #define ELFCLASS64 2 /* 64-bit architecture. */ 81 82 /* Values for e_ident[EI_DATA]. */ 83 #define ELFDATANONE 0 /* Unknown data format. */ 84 #define ELFDATA2LSB 1 /* 2's complement little-endian. */ 85 #define ELFDATA2MSB 2 /* 2's complement big-endian. */ 86 87 /* Values for e_ident[EI_OSABI]. */ 88 #define ELFOSABI_SYSV 0 /* UNIX System V ABI */ 89 #define ELFOSABI_NONE ELFOSABI_SYSV /* symbol used in old spec */ 90 #define ELFOSABI_HPUX 1 /* HP-UX operating system */ 91 #define ELFOSABI_NETBSD 2 /* NetBSD */ 92 #define ELFOSABI_LINUX 3 /* GNU/Linux */ 93 #define ELFOSABI_HURD 4 /* GNU/Hurd */ 94 #define ELFOSABI_86OPEN 5 /* 86Open common IA32 ABI */ 95 #define ELFOSABI_SOLARIS 6 /* Solaris */ 96 #define ELFOSABI_MONTEREY 7 /* Monterey */ 97 #define ELFOSABI_IRIX 8 /* IRIX */ 98 #define ELFOSABI_FREEBSD 9 /* FreeBSD */ 99 #define ELFOSABI_TRU64 10 /* TRU64 UNIX */ 100 #define ELFOSABI_MODESTO 11 /* Novell Modesto */ 101 #define ELFOSABI_OPENBSD 12 /* OpenBSD */ 102 #define ELFOSABI_ARM 97 /* ARM */ 103 #define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */ 104 105 /* e_ident */ 106 #define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \ 107 (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \ 108 (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \ 109 (ehdr).e_ident[EI_MAG3] == ELFMAG3) 110 111 /* Values for e_type. */ 112 #define ET_NONE 0 /* Unknown type. */ 113 #define ET_REL 1 /* Relocatable. */ 114 #define ET_EXEC 2 /* Executable. */ 115 #define ET_DYN 3 /* Shared object. */ 116 #define ET_CORE 4 /* Core file. */ 117 118 /* Values for e_machine. */ 119 #define EM_NONE 0 /* Unknown machine. */ 120 #define EM_M32 1 /* AT&T WE32100. */ 121 #define EM_SPARC 2 /* Sun SPARC. */ 122 #define EM_386 3 /* Intel i386. */ 123 #define EM_68K 4 /* Motorola 68000. */ 124 #define EM_88K 5 /* Motorola 88000. */ 125 #define EM_486 6 /* Intel i486. */ 126 #define EM_860 7 /* Intel i860. */ 127 #define EM_MIPS 8 /* MIPS R3000 Big-Endian only */ 128 129 /* Extensions. This list is not complete. */ 130 #define EM_S370 9 /* IBM System/370 */ 131 #define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */ /* Depreciated */ 132 #define EM_PARISC 15 /* HPPA */ 133 #define EM_SPARC32PLUS 18 /* SPARC v8plus */ 134 #define EM_PPC 20 /* PowerPC 32-bit */ 135 #define EM_PPC64 21 /* PowerPC 64-bit */ 136 #define EM_ARM 40 /* ARM */ 137 #define EM_SPARCV9 43 /* SPARC v9 64-bit */ 138 #define EM_IA_64 50 /* Intel IA-46 Processor */ 139 #define EM_X86_64 62 /* Advanced Micro Devices x86-64 */ 140 #define EM_ALPHA 0x9026 /* Alpha (written in the absence of an ABI */ 141 142 /* Special section indexes. */ 143 #define SHN_UNDEF 0 /* Undefined, missing, irrelevant. */ 144 #define SHN_LORESERVE 0xff00 /* First of reserved range. */ 145 #define SHN_LOPROC 0xff00 /* First processor-specific. */ 146 #define SHN_HIPROC 0xff1f /* Last processor-specific. */ 147 #define SHN_ABS 0xfff1 /* Absolute values. */ 148 #define SHN_COMMON 0xfff2 /* Common data. */ 149 #define SHN_HIRESERVE 0xffff /* Last of reserved range. */ 150 151 /* sh_type */ 152 #define SHT_NULL 0 /* inactive */ 153 #define SHT_PROGBITS 1 /* program defined information */ 154 #define SHT_SYMTAB 2 /* symbol table section */ 155 #define SHT_STRTAB 3 /* string table section */ 156 #define SHT_RELA 4 /* relocation section with addends*/ 157 #define SHT_HASH 5 /* symbol hash table section */ 158 #define SHT_DYNAMIC 6 /* dynamic section */ 159 #define SHT_NOTE 7 /* note section */ 160 #define SHT_NOBITS 8 /* no space section */ 161 #define SHT_REL 9 /* relation section without addends */ 162 #define SHT_SHLIB 10 /* reserved - purpose unknown */ 163 #define SHT_DYNSYM 11 /* dynamic symbol table section */ 164 #define SHT_LOPROC 0x70000000 /* reserved range for processor */ 165 #define SHT_HIPROC 0x7fffffff /* specific section header types */ 166 #define SHT_LOUSER 0x80000000 /* reserved range for application */ 167 #define SHT_HIUSER 0xffffffff /* specific indexes */ 168 169 /* Flags for sh_flags. */ 170 #define SHF_WRITE 0x1 /* Section contains writable data. */ 171 #define SHF_ALLOC 0x2 /* Section occupies memory. */ 172 #define SHF_EXECINSTR 0x4 /* Section contains instructions. */ 173 #define SHF_MASKPROC 0xf0000000 /* Reserved for processor-specific. */ 174 175 /* Values for p_type. */ 176 #define PT_NULL 0 /* Unused entry. */ 177 #define PT_LOAD 1 /* Loadable segment. */ 178 #define PT_DYNAMIC 2 /* Dynamic linking information segment. */ 179 #define PT_INTERP 3 /* Pathname of interpreter. */ 180 #define PT_NOTE 4 /* Auxiliary information. */ 181 #define PT_SHLIB 5 /* Reserved (not used). */ 182 #define PT_PHDR 6 /* Location of program header itself. */ 183 184 #define PT_COUNT 7 /* Number of defined p_type values. */ 185 186 #define PT_LOPROC 0x70000000 /* First processor-specific type. */ 187 #define PT_HIPROC 0x7fffffff /* Last processor-specific type. */ 188 189 /* Values for p_flags. */ 190 #define PF_X 0x1 /* Executable. */ 191 #define PF_W 0x2 /* Writable. */ 192 #define PF_R 0x4 /* Readable. */ 193 194 /* Values for d_tag. */ 195 #define DT_NULL 0 /* Terminating entry. */ 196 #define DT_NEEDED 1 /* String table offset of a needed shared 197 library. */ 198 #define DT_PLTRELSZ 2 /* Total size in bytes of PLT relocations. */ 199 #define DT_PLTGOT 3 /* Processor-dependent address. */ 200 #define DT_HASH 4 /* Address of symbol hash table. */ 201 #define DT_STRTAB 5 /* Address of string table. */ 202 #define DT_SYMTAB 6 /* Address of symbol table. */ 203 #define DT_RELA 7 /* Address of ElfNN_Rela relocations. */ 204 #define DT_RELASZ 8 /* Total size of ElfNN_Rela relocations. */ 205 #define DT_RELAENT 9 /* Size of each ElfNN_Rela relocation entry. */ 206 #define DT_STRSZ 10 /* Size of string table. */ 207 #define DT_SYMENT 11 /* Size of each symbol table entry. */ 208 #define DT_INIT 12 /* Address of initialization function. */ 209 #define DT_FINI 13 /* Address of finalization function. */ 210 #define DT_SONAME 14 /* String table offset of shared object 211 name. */ 212 #define DT_RPATH 15 /* String table offset of library path. */ 213 #define DT_SYMBOLIC 16 /* Indicates "symbolic" linking. */ 214 #define DT_REL 17 /* Address of ElfNN_Rel relocations. */ 215 #define DT_RELSZ 18 /* Total size of ElfNN_Rel relocations. */ 216 #define DT_RELENT 19 /* Size of each ElfNN_Rel relocation. */ 217 #define DT_PLTREL 20 /* Type of relocation used for PLT. */ 218 #define DT_DEBUG 21 /* Reserved (not used). */ 219 #define DT_TEXTREL 22 /* Indicates there may be relocations in 220 non-writable segments. */ 221 #define DT_JMPREL 23 /* Address of PLT relocations. */ 222 223 #define DT_COUNT 24 /* Number of defined d_tag values. */ 224 225 /* Values for n_type. Used in core files. */ 226 #define NT_PRSTATUS 1 /* Process status. */ 227 #define NT_FPREGSET 2 /* Floating point registers. */ 228 #define NT_PRPSINFO 3 /* Process state info. */ 229 230 /* Symbol Binding - ELFNN_ST_BIND - st_info */ 231 #define STB_LOCAL 0 /* Local symbol */ 232 #define STB_GLOBAL 1 /* Global symbol */ 233 #define STB_WEAK 2 /* like global - lower precedence */ 234 #define STB_LOPROC 13 /* reserved range for processor */ 235 #define STB_HIPROC 15 /* specific symbol bindings */ 236 237 /* Symbol type - ELFNN_ST_TYPE - st_info */ 238 #define STT_NOTYPE 0 /* Unspecified type. */ 239 #define STT_OBJECT 1 /* Data object. */ 240 #define STT_FUNC 2 /* Function. */ 241 #define STT_SECTION 3 /* Section. */ 242 #define STT_FILE 4 /* Source file. */ 243 #define STT_LOPROC 13 /* reserved range for processor */ 244 #define STT_HIPROC 15 /* specific symbol types */ 245 246 /* Special symbol table indexes. */ 247 #define STN_UNDEF 0 /* Undefined symbol index. */ 248 249 #endif /* !_SYS_ELF_COMMON_H_ */ 250