1 #ifndef _LINUX_ELF_H 2 #define _LINUX_ELF_H 3 4 #include <linux/types.h> 5 #include <linux/elf-em.h> 6 #ifdef __KERNEL__ 7 #include <asm/elf.h> 8 #endif 9 10 /* 32-bit ELF base types. */ 11 typedef __u32 Elf32_Addr; 12 typedef __u16 Elf32_Half; 13 typedef __u32 Elf32_Off; 14 typedef __s32 Elf32_Sword; 15 typedef __u32 Elf32_Word; 16 17 /* 64-bit ELF base types. */ 18 typedef __u64 Elf64_Addr; 19 typedef __u16 Elf64_Half; 20 typedef __s16 Elf64_SHalf; 21 typedef __u64 Elf64_Off; 22 typedef __s32 Elf64_Sword; 23 typedef __u32 Elf64_Word; 24 typedef __u64 Elf64_Xword; 25 typedef __s64 Elf64_Sxword; 26 27 /* These constants are for the segment types stored in the image headers */ 28 #define PT_NULL 0 29 #define PT_LOAD 1 30 #define PT_DYNAMIC 2 31 #define PT_INTERP 3 32 #define PT_NOTE 4 33 #define PT_SHLIB 5 34 #define PT_PHDR 6 35 #define PT_TLS 7 /* Thread local storage segment */ 36 #define PT_LOOS 0x60000000 /* OS-specific */ 37 #define PT_HIOS 0x6fffffff /* OS-specific */ 38 #define PT_LOPROC 0x70000000 39 #define PT_HIPROC 0x7fffffff 40 #define PT_GNU_EH_FRAME 0x6474e550 41 42 #define PT_GNU_STACK (PT_LOOS + 0x474e551) 43 44 /* 45 * Extended Numbering 46 * 47 * If the real number of program header table entries is larger than 48 * or equal to PN_XNUM(0xffff), it is set to sh_info field of the 49 * section header at index 0, and PN_XNUM is set to e_phnum 50 * field. Otherwise, the section header at index 0 is zero 51 * initialized, if it exists. 52 * 53 * Specifications are available in: 54 * 55 * - Sun microsystems: Linker and Libraries. 56 * Part No: 817-1984-17, September 2008. 57 * URL: http://docs.sun.com/app/docs/doc/817-1984 58 * 59 * - System V ABI AMD64 Architecture Processor Supplement 60 * Draft Version 0.99., 61 * May 11, 2009. 62 * URL: http://www.x86-64.org/ 63 */ 64 #define PN_XNUM 0xffff 65 66 /* These constants define the different elf file types */ 67 #define ET_NONE 0 68 #define ET_REL 1 69 #define ET_EXEC 2 70 #define ET_DYN 3 71 #define ET_CORE 4 72 #define ET_LOPROC 0xff00 73 #define ET_HIPROC 0xffff 74 75 /* This is the info that is needed to parse the dynamic section of the file */ 76 #define DT_NULL 0 77 #define DT_NEEDED 1 78 #define DT_PLTRELSZ 2 79 #define DT_PLTGOT 3 80 #define DT_HASH 4 81 #define DT_STRTAB 5 82 #define DT_SYMTAB 6 83 #define DT_RELA 7 84 #define DT_RELASZ 8 85 #define DT_RELAENT 9 86 #define DT_STRSZ 10 87 #define DT_SYMENT 11 88 #define DT_INIT 12 89 #define DT_FINI 13 90 #define DT_SONAME 14 91 #define DT_RPATH 15 92 #define DT_SYMBOLIC 16 93 #define DT_REL 17 94 #define DT_RELSZ 18 95 #define DT_RELENT 19 96 #define DT_PLTREL 20 97 #define DT_DEBUG 21 98 #define DT_TEXTREL 22 99 #define DT_JMPREL 23 100 #define DT_ENCODING 32 101 #define OLD_DT_LOOS 0x60000000 102 #define DT_LOOS 0x6000000d 103 #define DT_HIOS 0x6ffff000 104 #define DT_VALRNGLO 0x6ffffd00 105 #define DT_VALRNGHI 0x6ffffdff 106 #define DT_ADDRRNGLO 0x6ffffe00 107 #define DT_ADDRRNGHI 0x6ffffeff 108 #define DT_VERSYM 0x6ffffff0 109 #define DT_RELACOUNT 0x6ffffff9 110 #define DT_RELCOUNT 0x6ffffffa 111 #define DT_FLAGS_1 0x6ffffffb 112 #define DT_VERDEF 0x6ffffffc 113 #define DT_VERDEFNUM 0x6ffffffd 114 #define DT_VERNEED 0x6ffffffe 115 #define DT_VERNEEDNUM 0x6fffffff 116 #define OLD_DT_HIOS 0x6fffffff 117 #define DT_LOPROC 0x70000000 118 #define DT_HIPROC 0x7fffffff 119 120 /* This info is needed when parsing the symbol table */ 121 #define STB_LOCAL 0 122 #define STB_GLOBAL 1 123 #define STB_WEAK 2 124 125 #define STT_NOTYPE 0 126 #define STT_OBJECT 1 127 #define STT_FUNC 2 128 #define STT_SECTION 3 129 #define STT_FILE 4 130 #define STT_COMMON 5 131 #define STT_TLS 6 132 133 #define ELF_ST_BIND(x) ((x) >> 4) 134 #define ELF_ST_TYPE(x) (((unsigned int) x) & 0xf) 135 #define ELF32_ST_BIND(x) ELF_ST_BIND(x) 136 #define ELF32_ST_TYPE(x) ELF_ST_TYPE(x) 137 #define ELF64_ST_BIND(x) ELF_ST_BIND(x) 138 #define ELF64_ST_TYPE(x) ELF_ST_TYPE(x) 139 140 typedef struct dynamic{ 141 Elf32_Sword d_tag; 142 union{ 143 Elf32_Sword d_val; 144 Elf32_Addr d_ptr; 145 } d_un; 146 } Elf32_Dyn; 147 148 typedef struct { 149 Elf64_Sxword d_tag; /* entry tag value */ 150 union { 151 Elf64_Xword d_val; 152 Elf64_Addr d_ptr; 153 } d_un; 154 } Elf64_Dyn; 155 156 /* The following are used with relocations */ 157 #define ELF32_R_SYM(x) ((x) >> 8) 158 #define ELF32_R_TYPE(x) ((x) & 0xff) 159 160 #define ELF64_R_SYM(i) ((i) >> 32) 161 #define ELF64_R_TYPE(i) ((i) & 0xffffffff) 162 163 typedef struct elf32_rel { 164 Elf32_Addr r_offset; 165 Elf32_Word r_info; 166 } Elf32_Rel; 167 168 typedef struct elf64_rel { 169 Elf64_Addr r_offset; /* Location at which to apply the action */ 170 Elf64_Xword r_info; /* index and type of relocation */ 171 } Elf64_Rel; 172 173 typedef struct elf32_rela{ 174 Elf32_Addr r_offset; 175 Elf32_Word r_info; 176 Elf32_Sword r_addend; 177 } Elf32_Rela; 178 179 typedef struct elf64_rela { 180 Elf64_Addr r_offset; /* Location at which to apply the action */ 181 Elf64_Xword r_info; /* index and type of relocation */ 182 Elf64_Sxword r_addend; /* Constant addend used to compute value */ 183 } Elf64_Rela; 184 185 typedef struct elf32_sym{ 186 Elf32_Word st_name; 187 Elf32_Addr st_value; 188 Elf32_Word st_size; 189 unsigned char st_info; 190 unsigned char st_other; 191 Elf32_Half st_shndx; 192 } Elf32_Sym; 193 194 typedef struct elf64_sym { 195 Elf64_Word st_name; /* Symbol name, index in string tbl */ 196 unsigned char st_info; /* Type and binding attributes */ 197 unsigned char st_other; /* No defined meaning, 0 */ 198 Elf64_Half st_shndx; /* Associated section index */ 199 Elf64_Addr st_value; /* Value of the symbol */ 200 Elf64_Xword st_size; /* Associated symbol size */ 201 } Elf64_Sym; 202 203 204 #define EI_NIDENT 16 205 206 typedef struct elf32_hdr{ 207 unsigned char e_ident[EI_NIDENT]; 208 Elf32_Half e_type; 209 Elf32_Half e_machine; 210 Elf32_Word e_version; 211 Elf32_Addr e_entry; /* Entry point */ 212 Elf32_Off e_phoff; 213 Elf32_Off e_shoff; 214 Elf32_Word e_flags; 215 Elf32_Half e_ehsize; 216 Elf32_Half e_phentsize; 217 Elf32_Half e_phnum; 218 Elf32_Half e_shentsize; 219 Elf32_Half e_shnum; 220 Elf32_Half e_shstrndx; 221 } Elf32_Ehdr; 222 223 typedef struct elf64_hdr { 224 unsigned char e_ident[EI_NIDENT]; /* ELF "magic number" */ 225 Elf64_Half e_type; 226 Elf64_Half e_machine; 227 Elf64_Word e_version; 228 Elf64_Addr e_entry; /* Entry point virtual address */ 229 Elf64_Off e_phoff; /* Program header table file offset */ 230 Elf64_Off e_shoff; /* Section header table file offset */ 231 Elf64_Word e_flags; 232 Elf64_Half e_ehsize; 233 Elf64_Half e_phentsize; 234 Elf64_Half e_phnum; 235 Elf64_Half e_shentsize; 236 Elf64_Half e_shnum; 237 Elf64_Half e_shstrndx; 238 } Elf64_Ehdr; 239 240 /* These constants define the permissions on sections in the program 241 header, p_flags. */ 242 #define PF_R 0x4 243 #define PF_W 0x2 244 #define PF_X 0x1 245 246 typedef struct elf32_phdr{ 247 Elf32_Word p_type; 248 Elf32_Off p_offset; 249 Elf32_Addr p_vaddr; 250 Elf32_Addr p_paddr; 251 Elf32_Word p_filesz; 252 Elf32_Word p_memsz; 253 Elf32_Word p_flags; 254 Elf32_Word p_align; 255 } Elf32_Phdr; 256 257 typedef struct elf64_phdr { 258 Elf64_Word p_type; 259 Elf64_Word p_flags; 260 Elf64_Off p_offset; /* Segment file offset */ 261 Elf64_Addr p_vaddr; /* Segment virtual address */ 262 Elf64_Addr p_paddr; /* Segment physical address */ 263 Elf64_Xword p_filesz; /* Segment size in file */ 264 Elf64_Xword p_memsz; /* Segment size in memory */ 265 Elf64_Xword p_align; /* Segment alignment, file & memory */ 266 } Elf64_Phdr; 267 268 /* sh_type */ 269 #define SHT_NULL 0 270 #define SHT_PROGBITS 1 271 #define SHT_SYMTAB 2 272 #define SHT_STRTAB 3 273 #define SHT_RELA 4 274 #define SHT_HASH 5 275 #define SHT_DYNAMIC 6 276 #define SHT_NOTE 7 277 #define SHT_NOBITS 8 278 #define SHT_REL 9 279 #define SHT_SHLIB 10 280 #define SHT_DYNSYM 11 281 #define SHT_NUM 12 282 #define SHT_LOPROC 0x70000000 283 #define SHT_HIPROC 0x7fffffff 284 #define SHT_LOUSER 0x80000000 285 #define SHT_HIUSER 0xffffffff 286 287 /* sh_flags */ 288 #define SHF_WRITE 0x1 289 #define SHF_ALLOC 0x2 290 #define SHF_EXECINSTR 0x4 291 #define SHF_MASKPROC 0xf0000000 292 293 /* special section indexes */ 294 #define SHN_UNDEF 0 295 #define SHN_LORESERVE 0xff00 296 #define SHN_LOPROC 0xff00 297 #define SHN_HIPROC 0xff1f 298 #define SHN_ABS 0xfff1 299 #define SHN_COMMON 0xfff2 300 #define SHN_HIRESERVE 0xffff 301 302 typedef struct elf32_shdr { 303 Elf32_Word sh_name; 304 Elf32_Word sh_type; 305 Elf32_Word sh_flags; 306 Elf32_Addr sh_addr; 307 Elf32_Off sh_offset; 308 Elf32_Word sh_size; 309 Elf32_Word sh_link; 310 Elf32_Word sh_info; 311 Elf32_Word sh_addralign; 312 Elf32_Word sh_entsize; 313 } Elf32_Shdr; 314 315 typedef struct elf64_shdr { 316 Elf64_Word sh_name; /* Section name, index in string tbl */ 317 Elf64_Word sh_type; /* Type of section */ 318 Elf64_Xword sh_flags; /* Miscellaneous section attributes */ 319 Elf64_Addr sh_addr; /* Section virtual addr at execution */ 320 Elf64_Off sh_offset; /* Section file offset */ 321 Elf64_Xword sh_size; /* Size of section in bytes */ 322 Elf64_Word sh_link; /* Index of another section */ 323 Elf64_Word sh_info; /* Additional section information */ 324 Elf64_Xword sh_addralign; /* Section alignment */ 325 Elf64_Xword sh_entsize; /* Entry size if section holds table */ 326 } Elf64_Shdr; 327 328 #define EI_MAG0 0 /* e_ident[] indexes */ 329 #define EI_MAG1 1 330 #define EI_MAG2 2 331 #define EI_MAG3 3 332 #define EI_CLASS 4 333 #define EI_DATA 5 334 #define EI_VERSION 6 335 #define EI_OSABI 7 336 #define EI_PAD 8 337 338 #define ELFMAG0 0x7f /* EI_MAG */ 339 #define ELFMAG1 'E' 340 #define ELFMAG2 'L' 341 #define ELFMAG3 'F' 342 #define ELFMAG "\177ELF" 343 #define SELFMAG 4 344 345 #define ELFCLASSNONE 0 /* EI_CLASS */ 346 #define ELFCLASS32 1 347 #define ELFCLASS64 2 348 #define ELFCLASSNUM 3 349 350 #define ELFDATANONE 0 /* e_ident[EI_DATA] */ 351 #define ELFDATA2LSB 1 352 #define ELFDATA2MSB 2 353 354 #define EV_NONE 0 /* e_version, EI_VERSION */ 355 #define EV_CURRENT 1 356 #define EV_NUM 2 357 358 #define ELFOSABI_NONE 0 359 #define ELFOSABI_LINUX 3 360 361 #ifndef ELF_OSABI 362 #define ELF_OSABI ELFOSABI_NONE 363 #endif 364 365 /* 366 * Notes used in ET_CORE. Architectures export some of the arch register sets 367 * using the corresponding note types via the PTRACE_GETREGSET and 368 * PTRACE_SETREGSET requests. 369 */ 370 #define NT_PRSTATUS 1 371 #define NT_PRFPREG 2 372 #define NT_PRPSINFO 3 373 #define NT_TASKSTRUCT 4 374 #define NT_AUXV 6 375 #define NT_PRXFPREG 0x46e62b7f /* copied from gdb5.1/include/elf/common.h */ 376 #define NT_PPC_VMX 0x100 /* PowerPC Altivec/VMX registers */ 377 #define NT_PPC_SPE 0x101 /* PowerPC SPE/EVR registers */ 378 #define NT_PPC_VSX 0x102 /* PowerPC VSX registers */ 379 #define NT_386_TLS 0x200 /* i386 TLS slots (struct user_desc) */ 380 #define NT_386_IOPERM 0x201 /* x86 io permission bitmap (1=deny) */ 381 #define NT_X86_XSTATE 0x202 /* x86 extended state using xsave */ 382 #define NT_S390_HIGH_GPRS 0x300 /* s390 upper register halves */ 383 #define NT_S390_TIMER 0x301 /* s390 timer register */ 384 #define NT_S390_TODCMP 0x302 /* s390 TOD clock comparator register */ 385 #define NT_S390_TODPREG 0x303 /* s390 TOD programmable register */ 386 #define NT_S390_CTRS 0x304 /* s390 control registers */ 387 #define NT_S390_PREFIX 0x305 /* s390 prefix register */ 388 #define NT_S390_LAST_BREAK 0x306 /* s390 breaking event address */ 389 #define NT_S390_SYSTEM_CALL 0x307 /* s390 system call restart data */ 390 #define NT_ARM_VFP 0x400 /* ARM VFP/NEON registers */ 391 392 393 /* Note header in a PT_NOTE section */ 394 typedef struct elf32_note { 395 Elf32_Word n_namesz; /* Name size */ 396 Elf32_Word n_descsz; /* Content size */ 397 Elf32_Word n_type; /* Content type */ 398 } Elf32_Nhdr; 399 400 /* Note header in a PT_NOTE section */ 401 typedef struct elf64_note { 402 Elf64_Word n_namesz; /* Name size */ 403 Elf64_Word n_descsz; /* Content size */ 404 Elf64_Word n_type; /* Content type */ 405 } Elf64_Nhdr; 406 407 #ifdef __KERNEL__ 408 #ifndef elf_read_implies_exec 409 /* Executables for which elf_read_implies_exec() returns TRUE will 410 have the READ_IMPLIES_EXEC personality flag set automatically. 411 Override in asm/elf.h as needed. */ 412 # define elf_read_implies_exec(ex, have_pt_gnu_stack) 0 413 #endif 414 415 #if ELF_CLASS == ELFCLASS32 416 417 extern Elf32_Dyn _DYNAMIC []; 418 #define elfhdr elf32_hdr 419 #define elf_phdr elf32_phdr 420 #define elf_shdr elf32_shdr 421 #define elf_note elf32_note 422 #define elf_addr_t Elf32_Off 423 #define Elf_Half Elf32_Half 424 425 #else 426 427 extern Elf64_Dyn _DYNAMIC []; 428 #define elfhdr elf64_hdr 429 #define elf_phdr elf64_phdr 430 #define elf_shdr elf64_shdr 431 #define elf_note elf64_note 432 #define elf_addr_t Elf64_Off 433 #define Elf_Half Elf64_Half 434 435 #endif 436 437 /* Optional callbacks to write extra ELF notes. */ 438 struct file; 439 440 #ifndef ARCH_HAVE_EXTRA_ELF_NOTES 441 static inline int elf_coredump_extra_notes_size(void) { return 0; } 442 static inline int elf_coredump_extra_notes_write(struct file *file, 443 loff_t *foffset) { return 0; } 444 #else 445 extern int elf_coredump_extra_notes_size(void); 446 extern int elf_coredump_extra_notes_write(struct file *file, loff_t *foffset); 447 #endif 448 #endif /* __KERNEL__ */ 449 #endif /* _LINUX_ELF_H */ 450