1 #ifndef _LINUX_ELF_H 2 #define _LINUX_ELF_H 3 4 #include <linux/types.h> 5 #include <asm/elf.h> 6 7 #ifndef elf_read_implies_exec 8 /* Executables for which elf_read_implies_exec() returns TRUE will 9 have the READ_IMPLIES_EXEC personality flag set automatically. 10 Override in asm/elf.h as needed. */ 11 # define elf_read_implies_exec(ex, have_pt_gnu_stack) 0 12 #endif 13 14 /* 32-bit ELF base types. */ 15 typedef __u32 Elf32_Addr; 16 typedef __u16 Elf32_Half; 17 typedef __u32 Elf32_Off; 18 typedef __s32 Elf32_Sword; 19 typedef __u32 Elf32_Word; 20 21 /* 64-bit ELF base types. */ 22 typedef __u64 Elf64_Addr; 23 typedef __u16 Elf64_Half; 24 typedef __s16 Elf64_SHalf; 25 typedef __u64 Elf64_Off; 26 typedef __s32 Elf64_Sword; 27 typedef __u32 Elf64_Word; 28 typedef __u64 Elf64_Xword; 29 typedef __s64 Elf64_Sxword; 30 31 /* These constants are for the segment types stored in the image headers */ 32 #define PT_NULL 0 33 #define PT_LOAD 1 34 #define PT_DYNAMIC 2 35 #define PT_INTERP 3 36 #define PT_NOTE 4 37 #define PT_SHLIB 5 38 #define PT_PHDR 6 39 #define PT_TLS 7 /* Thread local storage segment */ 40 #define PT_LOOS 0x60000000 /* OS-specific */ 41 #define PT_HIOS 0x6fffffff /* OS-specific */ 42 #define PT_LOPROC 0x70000000 43 #define PT_HIPROC 0x7fffffff 44 #define PT_GNU_EH_FRAME 0x6474e550 45 46 #define PT_GNU_STACK (PT_LOOS + 0x474e551) 47 48 /* These constants define the different elf file types */ 49 #define ET_NONE 0 50 #define ET_REL 1 51 #define ET_EXEC 2 52 #define ET_DYN 3 53 #define ET_CORE 4 54 #define ET_LOPROC 0xff00 55 #define ET_HIPROC 0xffff 56 57 /* These constants define the various ELF target machines */ 58 #define EM_NONE 0 59 #define EM_M32 1 60 #define EM_SPARC 2 61 #define EM_386 3 62 #define EM_68K 4 63 #define EM_88K 5 64 #define EM_486 6 /* Perhaps disused */ 65 #define EM_860 7 66 67 #define EM_MIPS 8 /* MIPS R3000 (officially, big-endian only) */ 68 69 #define EM_MIPS_RS4_BE 10 /* MIPS R4000 big-endian */ 70 71 #define EM_PARISC 15 /* HPPA */ 72 73 #define EM_SPARC32PLUS 18 /* Sun's "v8plus" */ 74 75 #define EM_PPC 20 /* PowerPC */ 76 #define EM_PPC64 21 /* PowerPC64 */ 77 78 #define EM_SH 42 /* SuperH */ 79 80 #define EM_SPARCV9 43 /* SPARC v9 64-bit */ 81 82 #define EM_IA_64 50 /* HP/Intel IA-64 */ 83 84 #define EM_X86_64 62 /* AMD x86-64 */ 85 86 #define EM_S390 22 /* IBM S/390 */ 87 88 #define EM_CRIS 76 /* Axis Communications 32-bit embedded processor */ 89 90 #define EM_V850 87 /* NEC v850 */ 91 92 #define EM_M32R 88 /* Renesas M32R */ 93 94 #define EM_H8_300 46 /* Renesas H8/300,300H,H8S */ 95 96 /* 97 * This is an interim value that we will use until the committee comes 98 * up with a final number. 99 */ 100 #define EM_ALPHA 0x9026 101 102 /* Bogus old v850 magic number, used by old tools. */ 103 #define EM_CYGNUS_V850 0x9080 104 105 /* Bogus old m32r magic number, used by old tools. */ 106 #define EM_CYGNUS_M32R 0x9041 107 108 /* 109 * This is the old interim value for S/390 architecture 110 */ 111 #define EM_S390_OLD 0xA390 112 113 #define EM_FRV 0x5441 /* Fujitsu FR-V */ 114 115 /* This is the info that is needed to parse the dynamic section of the file */ 116 #define DT_NULL 0 117 #define DT_NEEDED 1 118 #define DT_PLTRELSZ 2 119 #define DT_PLTGOT 3 120 #define DT_HASH 4 121 #define DT_STRTAB 5 122 #define DT_SYMTAB 6 123 #define DT_RELA 7 124 #define DT_RELASZ 8 125 #define DT_RELAENT 9 126 #define DT_STRSZ 10 127 #define DT_SYMENT 11 128 #define DT_INIT 12 129 #define DT_FINI 13 130 #define DT_SONAME 14 131 #define DT_RPATH 15 132 #define DT_SYMBOLIC 16 133 #define DT_REL 17 134 #define DT_RELSZ 18 135 #define DT_RELENT 19 136 #define DT_PLTREL 20 137 #define DT_DEBUG 21 138 #define DT_TEXTREL 22 139 #define DT_JMPREL 23 140 #define DT_LOPROC 0x70000000 141 #define DT_HIPROC 0x7fffffff 142 143 /* This info is needed when parsing the symbol table */ 144 #define STB_LOCAL 0 145 #define STB_GLOBAL 1 146 #define STB_WEAK 2 147 148 #define STT_NOTYPE 0 149 #define STT_OBJECT 1 150 #define STT_FUNC 2 151 #define STT_SECTION 3 152 #define STT_FILE 4 153 154 #define ELF_ST_BIND(x) ((x) >> 4) 155 #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf) 156 #define ELF32_ST_BIND(x) ELF_ST_BIND(x) 157 #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x) 158 #define ELF64_ST_BIND(x) ELF_ST_BIND(x) 159 #define ELF64_ST_TYPE(x) ELF_ST_TYPE(x) 160 161 /* Symbolic values for the entries in the auxiliary table 162 put on the initial stack */ 163 #define AT_NULL 0 /* end of vector */ 164 #define AT_IGNORE 1 /* entry should be ignored */ 165 #define AT_EXECFD 2 /* file descriptor of program */ 166 #define AT_PHDR 3 /* program headers for program */ 167 #define AT_PHENT 4 /* size of program header entry */ 168 #define AT_PHNUM 5 /* number of program headers */ 169 #define AT_PAGESZ 6 /* system page size */ 170 #define AT_BASE 7 /* base address of interpreter */ 171 #define AT_FLAGS 8 /* flags */ 172 #define AT_ENTRY 9 /* entry point of program */ 173 #define AT_NOTELF 10 /* program is not ELF */ 174 #define AT_UID 11 /* real uid */ 175 #define AT_EUID 12 /* effective uid */ 176 #define AT_GID 13 /* real gid */ 177 #define AT_EGID 14 /* effective gid */ 178 #define AT_PLATFORM 15 /* string identifying CPU for optimizations */ 179 #define AT_HWCAP 16 /* arch dependent hints at CPU capabilities */ 180 #define AT_CLKTCK 17 /* frequency at which times() increments */ 181 182 #define AT_SECURE 23 /* secure mode boolean */ 183 184 typedef struct dynamic{ 185 Elf32_Sword d_tag; 186 union{ 187 Elf32_Sword d_val; 188 Elf32_Addr d_ptr; 189 } d_un; 190 } Elf32_Dyn; 191 192 typedef struct { 193 Elf64_Sxword d_tag; /* entry tag value */ 194 union { 195 Elf64_Xword d_val; 196 Elf64_Addr d_ptr; 197 } d_un; 198 } Elf64_Dyn; 199 200 /* The following are used with relocations */ 201 #define ELF32_R_SYM(x) ((x) >> 8) 202 #define ELF32_R_TYPE(x) ((x) & 0xff) 203 204 #define ELF64_R_SYM(i) ((i) >> 32) 205 #define ELF64_R_TYPE(i) ((i) & 0xffffffff) 206 207 typedef struct elf32_rel { 208 Elf32_Addr r_offset; 209 Elf32_Word r_info; 210 } Elf32_Rel; 211 212 typedef struct elf64_rel { 213 Elf64_Addr r_offset; /* Location at which to apply the action */ 214 Elf64_Xword r_info; /* index and type of relocation */ 215 } Elf64_Rel; 216 217 typedef struct elf32_rela{ 218 Elf32_Addr r_offset; 219 Elf32_Word r_info; 220 Elf32_Sword r_addend; 221 } Elf32_Rela; 222 223 typedef struct elf64_rela { 224 Elf64_Addr r_offset; /* Location at which to apply the action */ 225 Elf64_Xword r_info; /* index and type of relocation */ 226 Elf64_Sxword r_addend; /* Constant addend used to compute value */ 227 } Elf64_Rela; 228 229 typedef struct elf32_sym{ 230 Elf32_Word st_name; 231 Elf32_Addr st_value; 232 Elf32_Word st_size; 233 unsigned char st_info; 234 unsigned char st_other; 235 Elf32_Half st_shndx; 236 } Elf32_Sym; 237 238 typedef struct elf64_sym { 239 Elf64_Word st_name; /* Symbol name, index in string tbl */ 240 unsigned char st_info; /* Type and binding attributes */ 241 unsigned char st_other; /* No defined meaning, 0 */ 242 Elf64_Half st_shndx; /* Associated section index */ 243 Elf64_Addr st_value; /* Value of the symbol */ 244 Elf64_Xword st_size; /* Associated symbol size */ 245 } Elf64_Sym; 246 247 248 #define EI_NIDENT 16 249 250 typedef struct elf32_hdr{ 251 unsigned char e_ident[EI_NIDENT]; 252 Elf32_Half e_type; 253 Elf32_Half e_machine; 254 Elf32_Word e_version; 255 Elf32_Addr e_entry; /* Entry point */ 256 Elf32_Off e_phoff; 257 Elf32_Off e_shoff; 258 Elf32_Word e_flags; 259 Elf32_Half e_ehsize; 260 Elf32_Half e_phentsize; 261 Elf32_Half e_phnum; 262 Elf32_Half e_shentsize; 263 Elf32_Half e_shnum; 264 Elf32_Half e_shstrndx; 265 } Elf32_Ehdr; 266 267 typedef struct elf64_hdr { 268 unsigned char e_ident[16]; /* ELF "magic number" */ 269 Elf64_Half e_type; 270 Elf64_Half e_machine; 271 Elf64_Word e_version; 272 Elf64_Addr e_entry; /* Entry point virtual address */ 273 Elf64_Off e_phoff; /* Program header table file offset */ 274 Elf64_Off e_shoff; /* Section header table file offset */ 275 Elf64_Word e_flags; 276 Elf64_Half e_ehsize; 277 Elf64_Half e_phentsize; 278 Elf64_Half e_phnum; 279 Elf64_Half e_shentsize; 280 Elf64_Half e_shnum; 281 Elf64_Half e_shstrndx; 282 } Elf64_Ehdr; 283 284 /* These constants define the permissions on sections in the program 285 header, p_flags. */ 286 #define PF_R 0x4 287 #define PF_W 0x2 288 #define PF_X 0x1 289 290 typedef struct elf32_phdr{ 291 Elf32_Word p_type; 292 Elf32_Off p_offset; 293 Elf32_Addr p_vaddr; 294 Elf32_Addr p_paddr; 295 Elf32_Word p_filesz; 296 Elf32_Word p_memsz; 297 Elf32_Word p_flags; 298 Elf32_Word p_align; 299 } Elf32_Phdr; 300 301 typedef struct elf64_phdr { 302 Elf64_Word p_type; 303 Elf64_Word p_flags; 304 Elf64_Off p_offset; /* Segment file offset */ 305 Elf64_Addr p_vaddr; /* Segment virtual address */ 306 Elf64_Addr p_paddr; /* Segment physical address */ 307 Elf64_Xword p_filesz; /* Segment size in file */ 308 Elf64_Xword p_memsz; /* Segment size in memory */ 309 Elf64_Xword p_align; /* Segment alignment, file & memory */ 310 } Elf64_Phdr; 311 312 /* sh_type */ 313 #define SHT_NULL 0 314 #define SHT_PROGBITS 1 315 #define SHT_SYMTAB 2 316 #define SHT_STRTAB 3 317 #define SHT_RELA 4 318 #define SHT_HASH 5 319 #define SHT_DYNAMIC 6 320 #define SHT_NOTE 7 321 #define SHT_NOBITS 8 322 #define SHT_REL 9 323 #define SHT_SHLIB 10 324 #define SHT_DYNSYM 11 325 #define SHT_NUM 12 326 #define SHT_LOPROC 0x70000000 327 #define SHT_HIPROC 0x7fffffff 328 #define SHT_LOUSER 0x80000000 329 #define SHT_HIUSER 0xffffffff 330 331 /* sh_flags */ 332 #define SHF_WRITE 0x1 333 #define SHF_ALLOC 0x2 334 #define SHF_EXECINSTR 0x4 335 #define SHF_MASKPROC 0xf0000000 336 337 /* special section indexes */ 338 #define SHN_UNDEF 0 339 #define SHN_LORESERVE 0xff00 340 #define SHN_LOPROC 0xff00 341 #define SHN_HIPROC 0xff1f 342 #define SHN_ABS 0xfff1 343 #define SHN_COMMON 0xfff2 344 #define SHN_HIRESERVE 0xffff 345 346 typedef struct { 347 Elf32_Word sh_name; 348 Elf32_Word sh_type; 349 Elf32_Word sh_flags; 350 Elf32_Addr sh_addr; 351 Elf32_Off sh_offset; 352 Elf32_Word sh_size; 353 Elf32_Word sh_link; 354 Elf32_Word sh_info; 355 Elf32_Word sh_addralign; 356 Elf32_Word sh_entsize; 357 } Elf32_Shdr; 358 359 typedef struct elf64_shdr { 360 Elf64_Word sh_name; /* Section name, index in string tbl */ 361 Elf64_Word sh_type; /* Type of section */ 362 Elf64_Xword sh_flags; /* Miscellaneous section attributes */ 363 Elf64_Addr sh_addr; /* Section virtual addr at execution */ 364 Elf64_Off sh_offset; /* Section file offset */ 365 Elf64_Xword sh_size; /* Size of section in bytes */ 366 Elf64_Word sh_link; /* Index of another section */ 367 Elf64_Word sh_info; /* Additional section information */ 368 Elf64_Xword sh_addralign; /* Section alignment */ 369 Elf64_Xword sh_entsize; /* Entry size if section holds table */ 370 } Elf64_Shdr; 371 372 #define EI_MAG0 0 /* e_ident[] indexes */ 373 #define EI_MAG1 1 374 #define EI_MAG2 2 375 #define EI_MAG3 3 376 #define EI_CLASS 4 377 #define EI_DATA 5 378 #define EI_VERSION 6 379 #define EI_OSABI 7 380 #define EI_PAD 8 381 382 #define ELFMAG0 0x7f /* EI_MAG */ 383 #define ELFMAG1 'E' 384 #define ELFMAG2 'L' 385 #define ELFMAG3 'F' 386 #define ELFMAG "\177ELF" 387 #define SELFMAG 4 388 389 #define ELFCLASSNONE 0 /* EI_CLASS */ 390 #define ELFCLASS32 1 391 #define ELFCLASS64 2 392 #define ELFCLASSNUM 3 393 394 #define ELFDATANONE 0 /* e_ident[EI_DATA] */ 395 #define ELFDATA2LSB 1 396 #define ELFDATA2MSB 2 397 398 #define EV_NONE 0 /* e_version, EI_VERSION */ 399 #define EV_CURRENT 1 400 #define EV_NUM 2 401 402 #define ELFOSABI_NONE 0 403 #define ELFOSABI_LINUX 3 404 405 #ifndef ELF_OSABI 406 #define ELF_OSABI ELFOSABI_NONE 407 #endif 408 409 /* Notes used in ET_CORE */ 410 #define NT_PRSTATUS 1 411 #define NT_PRFPREG 2 412 #define NT_PRPSINFO 3 413 #define NT_TASKSTRUCT 4 414 #define NT_AUXV 6 415 #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ 416 417 418 /* Note header in a PT_NOTE section */ 419 typedef struct elf32_note { 420 Elf32_Word n_namesz; /* Name size */ 421 Elf32_Word n_descsz; /* Content size */ 422 Elf32_Word n_type; /* Content type */ 423 } Elf32_Nhdr; 424 425 /* Note header in a PT_NOTE section */ 426 typedef struct elf64_note { 427 Elf64_Word n_namesz; /* Name size */ 428 Elf64_Word n_descsz; /* Content size */ 429 Elf64_Word n_type; /* Content type */ 430 } Elf64_Nhdr; 431 432 #if ELF_CLASS == ELFCLASS32 433 434 extern Elf32_Dyn _DYNAMIC []; 435 #define elfhdr elf32_hdr 436 #define elf_phdr elf32_phdr 437 #define elf_note elf32_note 438 439 #else 440 441 extern Elf64_Dyn _DYNAMIC []; 442 #define elfhdr elf64_hdr 443 #define elf_phdr elf64_phdr 444 #define elf_note elf64_note 445 446 #endif 447 448 449 #endif /* _LINUX_ELF_H */ 450