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