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