elf.h revision b3f3d6141f8636f627bf19fd44eaf59a52637ac8
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. */ 16typedef __u32 Elf32_Addr; 17typedef __u16 Elf32_Half; 18typedef __u32 Elf32_Off; 19typedef __s32 Elf32_Sword; 20typedef __u32 Elf32_Word; 21 22/* 64-bit ELF base types. */ 23typedef __u64 Elf64_Addr; 24typedef __u16 Elf64_Half; 25typedef __s16 Elf64_SHalf; 26typedef __u64 Elf64_Off; 27typedef __s32 Elf64_Sword; 28typedef __u32 Elf64_Word; 29typedef __u64 Elf64_Xword; 30typedef __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 164typedef 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 172typedef 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 187typedef struct elf32_rel { 188 Elf32_Addr r_offset; 189 Elf32_Word r_info; 190} Elf32_Rel; 191 192typedef 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 197typedef struct elf32_rela{ 198 Elf32_Addr r_offset; 199 Elf32_Word r_info; 200 Elf32_Sword r_addend; 201} Elf32_Rela; 202 203typedef 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 209typedef 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 218typedef 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 230typedef 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 247typedef 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 270typedef 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 281typedef 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 326typedef 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 339typedef 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 */ 399typedef 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 */ 406typedef 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 414extern Elf32_Dyn _DYNAMIC []; 415#define elfhdr elf32_hdr 416#define elf_phdr elf32_phdr 417#define elf_note elf32_note 418 419#else 420 421extern 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