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root/include/sys/elf.h/* [<][>][^][v][top][bottom][index][help] */INCLUDED FROMDEFINITIONSThis source file includes following definitions.1 /*- 2 * Copyright (c) 1995, 1996 Erik Theisen. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 3. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 /* 28 * This is the ELF ABI header file 29 * formerly known as "elf_abi.h". 30 */ 31 32 #ifndef _SYS_ELF_H_ 33 #define _SYS_ELF_H_ 34 35 #include <sys/cdefs.h> 36 #include <machine/types.h> 37 38 #include <machine/elf.h> 39 40 typedef uint8_t Elf_Byte; 41 42 typedef uint32_t Elf32_Addr; /* Unsigned program address */ 43 typedef uint32_t Elf32_Off; /* Unsigned file offset */ 44 typedef int32_t Elf32_Sword; /* Signed large integer */ 45 typedef uint32_t Elf32_Word; /* Unsigned large integer */ 46 typedef uint16_t Elf32_Half; /* Unsigned medium integer */ 47 48 /* e_ident[] identification indexes */ 49 #define EI_MAG0 0 /* file ID */ 50 #define EI_MAG1 1 /* file ID */ 51 #define EI_MAG2 2 /* file ID */ 52 #define EI_MAG3 3 /* file ID */ 53 #define EI_CLASS 4 /* file class */ 54 #define EI_DATA 5 /* data encoding */ 55 #define EI_VERSION 6 /* ELF header version */ 56 #define EI_OSABI 7 /* Operating system / ABI identification */ 57 #define EI_ABIVERSION 8 /* ABI version */ 58 #define OLD_EI_BRAND 8 /* Start of architecture identification. */ 59 #define EI_PAD 9 /* Start of padding (per SVR4 ABI). */ 60 #define EI_NIDENT 16 /* Size of e_ident[] */ 61 62 /* e_ident[] magic number */ 63 #define ELFMAG0 0x7f /* e_ident[EI_MAG0] */ 64 #define ELFMAG1 'E' /* e_ident[EI_MAG1] */ 65 #define ELFMAG2 'L' /* e_ident[EI_MAG2] */ 66 #define ELFMAG3 'F' /* e_ident[EI_MAG3] */ 67 #define ELFMAG "\177ELF" /* magic */ 68 #define SELFMAG 4 /* size of magic */ 69 70 /* e_ident[] file class */ 71 #define ELFCLASSNONE 0 /* invalid */ 72 #define ELFCLASS32 1 /* 32-bit objs */ 73 #define ELFCLASS64 2 /* 64-bit objs */ 74 #define ELFCLASSNUM 3 /* number of classes */ 75 76 /* e_ident[] data encoding */ 77 #define ELFDATANONE 0 /* invalid */ 78 #define ELFDATA2LSB 1 /* Little-Endian */ 79 #define ELFDATA2MSB 2 /* Big-Endian */ 80 #define ELFDATANUM 3 /* number of data encode defines */ 81 82 /* e_ident[] OS ABI */ 83 #define ELFOSABI_SYSV 0 /* UNIX System V ABI */ 84 #define ELFOSABI_NONE ELFOSABI_SYSV /* symbol used in old spec */ 85 #define ELFOSABI_HPUX 1 /* HP-UX operating system */ 86 #define ELFOSABI_NETBSD 2 /* NetBSD */ 87 #define ELFOSABI_LINUX 3 /* GNU/Linux */ 88 #define ELFOSABI_HURD 4 /* GNU/Hurd */ 89 #define ELFOSABI_86OPEN 5 /* 86Open common IA32 ABI */ 90 #define ELFOSABI_SOLARIS 6 /* Solaris */ 91 #define ELFOSABI_MONTEREY 7 /* Monterey */ 92 #define ELFOSABI_IRIX 8 /* IRIX */ 93 #define ELFOSABI_FREEBSD 9 /* FreeBSD */ 94 #define ELFOSABI_TRU64 10 /* TRU64 UNIX */ 95 #define ELFOSABI_MODESTO 11 /* Novell Modesto */ 96 #define ELFOSABI_OPENBSD 12 /* OpenBSD */ 97 #define ELFOSABI_ARM 97 /* ARM */ 98 #define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */ 99 100 /* e_ident */ 101 #define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \ 102 (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \ 103 (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \ 104 (ehdr).e_ident[EI_MAG3] == ELFMAG3) 105 106 /* ELF Header */ 107 typedef struct elfhdr{ 108 unsigned char e_ident[EI_NIDENT]; /* ELF Identification */ 109 Elf32_Half e_type; /* object file type */ 110 Elf32_Half e_machine; /* machine */ 111 Elf32_Word e_version; /* object file version */ 112 Elf32_Addr e_entry; /* virtual entry point */ 113 Elf32_Off e_phoff; /* program header table offset */ 114 Elf32_Off e_shoff; /* section header table offset */ 115 Elf32_Word e_flags; /* processor-specific flags */ 116 Elf32_Half e_ehsize; /* ELF header size */ 117 Elf32_Half e_phentsize; /* program header entry size */ 118 Elf32_Half e_phnum; /* number of program header entries */ 119 Elf32_Half e_shentsize; /* section header entry size */ 120 Elf32_Half e_shnum; /* number of section header entries */ 121 Elf32_Half e_shstrndx; /* section header table's "section 122 header string table" entry offset */ 123 } Elf32_Ehdr; 124 125 /* e_type */ 126 #define ET_NONE 0 /* No file type */ 127 #define ET_REL 1 /* relocatable file */ 128 #define ET_EXEC 2 /* executable file */ 129 #define ET_DYN 3 /* shared object file */ 130 #define ET_CORE 4 /* core file */ 131 #define ET_NUM 5 /* number of types */ 132 #define ET_LOPROC 0xff00 /* reserved range for processor */ 133 #define ET_HIPROC 0xffff /* specific e_type */ 134 135 /* e_machine */ 136 #define EM_NONE 0 /* No Machine */ 137 #define EM_M32 1 /* AT&T WE 32100 */ 138 #define EM_SPARC 2 /* SPARC */ 139 #define EM_386 3 /* Intel 80386 */ 140 #define EM_68K 4 /* Motorola 68000 */ 141 #define EM_88K 5 /* Motorola 88000 */ 142 #define EM_486 6 /* Intel 80486 - unused? */ 143 #define EM_860 7 /* Intel 80860 */ 144 #define EM_MIPS 8 /* MIPS R3000 Big-Endian only */ 145 /* 146 * Don't know if EM_MIPS_RS4_BE, 147 * EM_SPARC64, EM_PARISC, 148 * or EM_PPC are ABI compliant 149 */ 150 #define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */ 151 #define EM_SPARC64 11 /* SPARC v9 64-bit unoffical */ 152 #define EM_PARISC 15 /* HPPA */ 153 #define EM_SPARC32PLUS 18 /* Enhanced instruction set SPARC */ 154 #define EM_PPC 20 /* PowerPC */ 155 #define EM_ARM 40 156 #define EM_ALPHA 41 /* DEC ALPHA */ 157 #define EM_SPARCV9 43 /* SPARC version 9 */ 158 #define EM_ALPHA_EXP 0x9026 /* DEC ALPHA */ 159 #define EM_VAX 75 /* DEC VAX */ 160 #define EM_NUM 15 /* number of machine types */ 161 162 /* Version */ 163 #define EV_NONE 0 /* Invalid */ 164 #define EV_CURRENT 1 /* Current */ 165 #define EV_NUM 2 /* number of versions */ 166 167 /* Section Header */ 168 typedef struct { 169 Elf32_Word sh_name; /* name - index into section header 170 string table section */ 171 Elf32_Word sh_type; /* type */ 172 Elf32_Word sh_flags; /* flags */ 173 Elf32_Addr sh_addr; /* address */ 174 Elf32_Off sh_offset; /* file offset */ 175 Elf32_Word sh_size; /* section size */ 176 Elf32_Word sh_link; /* section header table index link */ 177 Elf32_Word sh_info; /* extra information */ 178 Elf32_Word sh_addralign; /* address alignment */ 179 Elf32_Word sh_entsize; /* section entry size */ 180 } Elf32_Shdr; 181 182 /* Special Section Indexes */ 183 #define SHN_UNDEF 0 /* undefined */ 184 #define SHN_LORESERVE 0xff00 /* lower bounds of reserved indexes */ 185 #define SHN_LOPROC 0xff00 /* reserved range for processor */ 186 #define SHN_HIPROC 0xff1f /* specific section indexes */ 187 #define SHN_ABS 0xfff1 /* absolute value */ 188 #define SHN_COMMON 0xfff2 /* common symbol */ 189 #define SHN_HIRESERVE 0xffff /* upper bounds of reserved indexes */ 190 191 /* sh_type */ 192 #define SHT_NULL 0 /* inactive */ 193 #define SHT_PROGBITS 1 /* program defined information */ 194 #define SHT_SYMTAB 2 /* symbol table section */ 195 #define SHT_STRTAB 3 /* string table section */ 196 #define SHT_RELA 4 /* relocation section with addends*/ 197 #define SHT_HASH 5 /* symbol hash table section */ 198 #define SHT_DYNAMIC 6 /* dynamic section */ 199 #define SHT_NOTE 7 /* note section */ 200 #define SHT_NOBITS 8 /* no space section */ 201 #define SHT_REL 9 /* relation section without addends */ 202 #define SHT_SHLIB 10 /* reserved - purpose unknown */ 203 #define SHT_DYNSYM 11 /* dynamic symbol table section */ 204 #define SHT_NUM 12 /* number of section types */ 205 #define SHT_LOPROC 0x70000000 /* reserved range for processor */ 206 #define SHT_HIPROC 0x7fffffff /* specific section header types */ 207 #define SHT_LOUSER 0x80000000 /* reserved range for application */ 208 #define SHT_HIUSER 0xffffffff /* specific indexes */ 209 210 /* Section names */ 211 #define ELF_BSS ".bss" /* uninitialized data */ 212 #define ELF_DATA ".data" /* initialized data */ 213 #define ELF_DEBUG ".debug" /* debug */ 214 #define ELF_DYNAMIC ".dynamic" /* dynamic linking information */ 215 #define ELF_DYNSTR ".dynstr" /* dynamic string table */ 216 #define ELF_DYNSYM ".dynsym" /* dynamic symbol table */ 217 #define ELF_FINI ".fini" /* termination code */ 218 #define ELF_GOT ".got" /* global offset table */ 219 #define ELF_HASH ".hash" /* symbol hash table */ 220 #define ELF_INIT ".init" /* initialization code */ 221 #define ELF_REL_DATA ".rel.data" /* relocation data */ 222 #define ELF_REL_FINI ".rel.fini" /* relocation termination code */ 223 #define ELF_REL_INIT ".rel.init" /* relocation initialization code */ 224 #define ELF_REL_DYN ".rel.dyn" /* relocaltion dynamic link info */ 225 #define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */ 226 #define ELF_REL_TEXT ".rel.text" /* relocation code */ 227 #define ELF_RODATA ".rodata" /* read-only data */ 228 #define ELF_SHSTRTAB ".shstrtab" /* section header string table */ 229 #define ELF_STRTAB ".strtab" /* string table */ 230 #define ELF_SYMTAB ".symtab" /* symbol table */ 231 #define ELF_TEXT ".text" /* code */ 232 233 234 /* Section Attribute Flags - sh_flags */ 235 #define SHF_WRITE 0x1 /* Writable */ 236 #define SHF_ALLOC 0x2 /* occupies memory */ 237 #define SHF_EXECINSTR 0x4 /* executable */ 238 #define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */ 239 /* specific section attributes */ 240 241 /* Symbol Table Entry */ 242 typedef struct elf32_sym { 243 Elf32_Word st_name; /* name - index into string table */ 244 Elf32_Addr st_value; /* symbol value */ 245 Elf32_Word st_size; /* symbol size */ 246 unsigned char st_info; /* type and binding */ 247 unsigned char st_other; /* 0 - no defined meaning */ 248 Elf32_Half st_shndx; /* section header index */ 249 } Elf32_Sym; 250 251 /* Symbol table index */ 252 #define STN_UNDEF 0 /* undefined */ 253 254 /* Extract symbol info - st_info */ 255 #define ELF32_ST_BIND(x) ((x) >> 4) 256 #define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf) 257 #define ELF32_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf)) 258 259 /* Symbol Binding - ELF32_ST_BIND - st_info */ 260 #define STB_LOCAL 0 /* Local symbol */ 261 #define STB_GLOBAL 1 /* Global symbol */ 262 #define STB_WEAK 2 /* like global - lower precedence */ 263 #define STB_NUM 3 /* number of symbol bindings */ 264 #define STB_LOPROC 13 /* reserved range for processor */ 265 #define STB_HIPROC 15 /* specific symbol bindings */ 266 267 /* Symbol type - ELF32_ST_TYPE - st_info */ 268 #define STT_NOTYPE 0 /* not specified */ 269 #define STT_OBJECT 1 /* data object */ 270 #define STT_FUNC 2 /* function */ 271 #define STT_SECTION 3 /* section */ 272 #define STT_FILE 4 /* file */ 273 #define STT_NUM 5 /* number of symbol types */ 274 #define STT_LOPROC 13 /* reserved range for processor */ 275 #define STT_HIPROC 15 /* specific symbol types */ 276 277 /* Relocation entry with implicit addend */ 278 typedef struct 279 { 280 Elf32_Addr r_offset; /* offset of relocation */ 281 Elf32_Word r_info; /* symbol table index and type */ 282 } Elf32_Rel; 283 284 /* Relocation entry with explicit addend */ 285 typedef struct 286 { 287 Elf32_Addr r_offset; /* offset of relocation */ 288 Elf32_Word r_info; /* symbol table index and type */ 289 Elf32_Sword r_addend; 290 } Elf32_Rela; 291 292 /* Extract relocation info - r_info */ 293 #define ELF32_R_SYM(i) ((i) >> 8) 294 #define ELF32_R_TYPE(i) ((unsigned char) (i)) 295 #define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t)) 296 297 /* Program Header */ 298 typedef struct { 299 Elf32_Word p_type; /* segment type */ 300 Elf32_Off p_offset; /* segment offset */ 301 Elf32_Addr p_vaddr; /* virtual address of segment */ 302 Elf32_Addr p_paddr; /* physical address - ignored? */ 303 Elf32_Word p_filesz; /* number of bytes in file for seg. */ 304 Elf32_Word p_memsz; /* number of bytes in mem. for seg. */ 305 Elf32_Word p_flags; /* flags */ 306 Elf32_Word p_align; /* memory alignment */ 307 } Elf32_Phdr; 308 309 /* Segment types - p_type */ 310 #define PT_NULL 0 /* unused */ 311 #define PT_LOAD 1 /* loadable segment */ 312 #define PT_DYNAMIC 2 /* dynamic linking section */ 313 #define PT_INTERP 3 /* the RTLD */ 314 #define PT_NOTE 4 /* auxiliary information */ 315 #define PT_SHLIB 5 /* reserved - purpose undefined */ 316 #define PT_PHDR 6 /* program header */ 317 #define PT_NUM 7 /* Number of segment types */ 318 #define PT_LOPROC 0x70000000 /* reserved range for processor */ 319 #define PT_HIPROC 0x7fffffff /* specific segment types */ 320 321 /* Segment flags - p_flags */ 322 #define PF_X 0x1 /* Executable */ 323 #define PF_W 0x2 /* Writable */ 324 #define PF_R 0x4 /* Readable */ 325 #define PF_MASKPROC 0xf0000000 /* reserved bits for processor */ 326 /* specific segment flags */ 327 328 /* Dynamic structure */ 329 typedef struct { 330 Elf32_Sword d_tag; /* controls meaning of d_val */ 331 union { 332 Elf32_Word d_val; /* Multiple meanings - see d_tag */ 333 Elf32_Addr d_ptr; /* program virtual address */ 334 } d_un; 335 } Elf32_Dyn; 336 337 /* Dynamic Array Tags - d_tag */ 338 #define DT_NULL 0 /* marks end of _DYNAMIC array */ 339 #define DT_NEEDED 1 /* string table offset of needed lib */ 340 #define DT_PLTRELSZ 2 /* size of relocation entries in PLT */ 341 #define DT_PLTGOT 3 /* address PLT/GOT */ 342 #define DT_HASH 4 /* address of symbol hash table */ 343 #define DT_STRTAB 5 /* address of string table */ 344 #define DT_SYMTAB 6 /* address of symbol table */ 345 #define DT_RELA 7 /* address of relocation table */ 346 #define DT_RELASZ 8 /* size of relocation table */ 347 #define DT_RELAENT 9 /* size of relocation entry */ 348 #define DT_STRSZ 10 /* size of string table */ 349 #define DT_SYMENT 11 /* size of symbol table entry */ 350 #define DT_INIT 12 /* address of initialization func. */ 351 #define DT_FINI 13 /* address of termination function */ 352 #define DT_SONAME 14 /* string table offset of shared obj */ 353 #define DT_RPATH 15 /* string table offset of library 354 search path */ 355 #define DT_SYMBOLIC 16 /* start sym search in shared obj. */ 356 #define DT_REL 17 /* address of rel. tbl. w addends */ 357 #define DT_RELSZ 18 /* size of DT_REL relocation table */ 358 #define DT_RELENT 19 /* size of DT_REL relocation entry */ 359 #define DT_PLTREL 20 /* PLT referenced relocation entry */ 360 #define DT_DEBUG 21 /* bugger */ 361 #define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */ 362 #define DT_JMPREL 23 /* add. of PLT's relocation entries */ 363 #define DT_BIND_NOW 24 /* Bind now regardless of env setting */ 364 #define DT_NUM 25 /* Number used. */ 365 #define DT_LOPROC 0x70000000 /* reserved range for processor */ 366 #define DT_HIPROC 0x7fffffff /* specific dynamic array tags */ 367 368 /* Standard ELF hashing function */ 369 unsigned int elf_hash(const unsigned char *name); 370 371 /* 372 * Note Definitions 373 */ 374 typedef struct { 375 Elf32_Word namesz; 376 Elf32_Word descsz; 377 Elf32_Word type; 378 } Elf32_Note; 379 380 /* 381 * XXX - these _KERNEL items aren't part of the ABI! 382 */ 383 #if defined(_KERNEL) || defined(_DYN_LOADER) 384 385 #define ELF32_NO_ADDR ((u_long) ~0) /* Indicates addr. not yet filled in */ 386 #define ELF_AUX_ENTRIES 8 /* Size of aux array passed to loader */ 387 388 typedef struct { 389 Elf32_Sword au_id; /* 32-bit id */ 390 Elf32_Word au_v; /* 32-bit value */ 391 } Aux32Info; 392 393 enum AuxID { 394 AUX_null = 0, 395 AUX_ignore = 1, 396 AUX_execfd = 2, 397 AUX_phdr = 3, /* &phdr[0] */ 398 AUX_phent = 4, /* sizeof(phdr[0]) */ 399 AUX_phnum = 5, /* # phdr entries */ 400 AUX_pagesz = 6, /* PAGESIZE */ 401 AUX_base = 7, /* ld.so base addr */ 402 AUX_flags = 8, /* processor flags */ 403 AUX_entry = 9, /* a.out entry */ 404 AUX_sun_uid = 2000, /* euid */ 405 AUX_sun_ruid = 2001, /* ruid */ 406 AUX_sun_gid = 2002, /* egid */ 407 AUX_sun_rgid = 2003 /* rgid */ 408 }; 409 410 struct elf_args { 411 u_long arg_entry; /* program entry point */ 412 u_long arg_interp; /* Interpreter load address */ 413 u_long arg_phaddr; /* program header address */ 414 u_long arg_phentsize; /* Size of program header */ 415 u_long arg_phnum; /* Number of program headers */ 416 u_long arg_os; /* OS tag */ 417 }; 418 419 #endif 420 421 #if !defined(ELFSIZE) && defined(ARCH_ELFSIZE) 422 #define ELFSIZE ARCH_ELFSIZE 423 #endif 424 425 #if defined(ELFSIZE) 426 #define CONCAT(x,y) __CONCAT(x,y) 427 #define ELFNAME(x) CONCAT(elf,CONCAT(ELFSIZE,CONCAT(_,x))) 428 #define ELFNAME2(x,y) CONCAT(x,CONCAT(_elf,CONCAT(ELFSIZE,CONCAT(_,y)))) 429 #define ELFNAMEEND(x) CONCAT(x,CONCAT(_elf,ELFSIZE)) 430 #define ELFDEFNNAME(x) CONCAT(ELF,CONCAT(ELFSIZE,CONCAT(_,x))) 431 #endif 432 433 #define Elf_Ehdr Elf32_Ehdr 434 #define Elf_Phdr Elf32_Phdr 435 #define Elf_Shdr Elf32_Shdr 436 #define Elf_Sym Elf32_Sym 437 #define Elf_Rel Elf32_Rel 438 #define Elf_RelA Elf32_Rela 439 #define Elf_Dyn Elf32_Dyn 440 #define Elf_Word Elf32_Word 441 #define Elf_Sword Elf32_Sword 442 #define Elf_Addr Elf32_Addr 443 #define Elf_Off Elf32_Off 444 #define Elf_Nhdr Elf32_Nhdr 445 #define Elf_Note Elf32_Note 446 447 #define ELF_R_SYM ELF32_R_SYM 448 #define ELF_R_TYPE ELF32_R_TYPE 449 #define ELF_R_INFO ELF32_R_INFO 450 #define ELFCLASS ELFCLASS32 451 452 #define ELF_ST_BIND ELF32_ST_BIND 453 #define ELF_ST_TYPE ELF32_ST_TYPE 454 #define ELF_ST_INFO ELF32_ST_INFO 455 456 #define AuxInfo Aux32Info 457 458 #define ELF_TARG_VER 1 /* The ver for which this code is intended */ 459 460 461 __BEGIN_DECLS 462 int relocate_rel(Elf32_Rel *, Elf32_Addr, char *); 463 int relocate_rela(Elf32_Rela *, Elf32_Addr, char *); 464 __END_DECLS 465 466 #endif /* _SYS_ELF_H_ */ /* [<][>][^][v][top][bottom][index][help] */ | |||
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Copyright© 2005-2009 Kohsuke Ohtani |
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