include/uapi/linux/elf.h

   1 #ifndef _UAPI_LINUX_ELF_H
   2 #define _UAPI_LINUX_ELF_H
   3
   4 #include <linux/types.h>
   5 #include <linux/elf-em.h>
   6
   7 /* 32-bit ELF base types. */
   8 typedef __u32   Elf32_Addr;
   9 typedef __u16   Elf32_Half;
  10 typedef __u32   Elf32_Off;
  11 typedef __s32   Elf32_Sword;
  12 typedef __u32   Elf32_Word;
  13
  14 /* 64-bit ELF base types. */
  15 typedef __u64   Elf64_Addr;
  16 typedef __u16   Elf64_Half;
  17 typedef __s16   Elf64_SHalf;
  18 typedef __u64   Elf64_Off;
  19 typedef __s32   Elf64_Sword;
  20 typedef __u32   Elf64_Word;
  21 typedef __u64   Elf64_Xword;
  22 typedef __s64   Elf64_Sxword;
  23
  24 /* These constants are for the segment types stored in the image headers */
  25 #define PT_NULL    0
  26 #define PT_LOAD    1
  27 #define PT_DYNAMIC 2
  28 #define PT_INTERP  3
  29 #define PT_NOTE    4
  30 #define PT_SHLIB   5
  31 #define PT_PHDR    6
  32 #define PT_TLS     7               /* Thread local storage segment */
  33 #define PT_LOOS    0x60000000      /* OS-specific */
  34 #define PT_HIOS    0x6fffffff      /* OS-specific */
  35 #define PT_LOPROC  0x70000000
  36 #define PT_HIPROC  0x7fffffff
  37 #define PT_GNU_EH_FRAME         0x6474e550
  38
  39 #define PT_GNU_STACK    (PT_LOOS + 0x474e551)
  40
  41 /*
  42  * Extended Numbering
  43  *
  44  * If the real number of program header table entries is larger than
  45  * or equal to PN_XNUM(0xffff), it is set to sh_info field of the
  46  * section header at index 0, and PN_XNUM is set to e_phnum
  47  * field. Otherwise, the section header at index 0 is zero
  48  * initialized, if it exists.
  49  *
  50  * Specifications are available in:
  51  *
  52  * - Oracle: Linker and Libraries.
  53  *   Part No: 817–1984–19, August 2011.
  54  *   http://docs.oracle.com/cd/E18752_01/pdf/817-1984.pdf
  55  *
  56  * - System V ABI AMD64 Architecture Processor Supplement
  57  *   Draft Version 0.99.4,
  58  *   January 13, 2010.
  59  *   http://www.cs.washington.edu/education/courses/cse351/12wi/supp-docs/abi.pdf
  60  */
  61 #define PN_XNUM 0xffff
  62
  63 /* These constants define the different elf file types */
  64 #define ET_NONE   0
  65 #define ET_REL    1
  66 #define ET_EXEC   2
  67 #define ET_DYN    3
  68 #define ET_CORE   4
  69 #define ET_LOPROC 0xff00
  70 #define ET_HIPROC 0xffff
  71
  72 /* This is the info that is needed to parse the dynamic section of the file */
  73 #define DT_NULL         0
  74 #define DT_NEEDED       1
  75 #define DT_PLTRELSZ     2
  76 #define DT_PLTGOT       3
  77 #define DT_HASH         4
  78 #define DT_STRTAB       5
  79 #define DT_SYMTAB       6
  80 #define DT_RELA         7
  81 #define DT_RELASZ       8
  82 #define DT_RELAENT      9
  83 #define DT_STRSZ        10
  84 #define DT_SYMENT       11
  85 #define DT_INIT         12
  86 #define DT_FINI         13
  87 #define DT_SONAME       14
  88 #define DT_RPATH        15
  89 #define DT_SYMBOLIC     16
  90 #define DT_REL          17
  91 #define DT_RELSZ        18
  92 #define DT_RELENT       19
  93 #define DT_PLTREL       20
  94 #define DT_DEBUG        21
  95 #define DT_TEXTREL      22
  96 #define DT_JMPREL       23
  97 #define DT_ENCODING     32
  98 #define OLD_DT_LOOS     0x60000000
  99 #define DT_LOOS         0x6000000d
 100 #define DT_HIOS         0x6ffff000
 101 #define DT_VALRNGLO     0x6ffffd00
 102 #define DT_VALRNGHI     0x6ffffdff
 103 #define DT_ADDRRNGLO    0x6ffffe00
 104 #define DT_ADDRRNGHI    0x6ffffeff
 105 #define DT_VERSYM       0x6ffffff0
 106 #define DT_RELACOUNT    0x6ffffff9
 107 #define DT_RELCOUNT     0x6ffffffa
 108 #define DT_FLAGS_1      0x6ffffffb
 109 #define DT_VERDEF       0x6ffffffc
 110 #define DT_VERDEFNUM    0x6ffffffd
 111 #define DT_VERNEED      0x6ffffffe
 112 #define DT_VERNEEDNUM   0x6fffffff
 113 #define OLD_DT_HIOS     0x6fffffff
 114 #define DT_LOPROC       0x70000000
 115 #define DT_HIPROC       0x7fffffff
 116
 117 /* This info is needed when parsing the symbol table */
 118 #define STB_LOCAL  0
 119 #define STB_GLOBAL 1
 120 #define STB_WEAK   2
 121
 122 #define STT_NOTYPE  0
 123 #define STT_OBJECT  1
 124 #define STT_FUNC    2
 125 #define STT_SECTION 3
 126 #define STT_FILE    4
 127 #define STT_COMMON  5
 128 #define STT_TLS     6
 129
 130 #define ELF_ST_BIND(x)          ((x) >> 4)
 131 #define ELF_ST_TYPE(x)          (((unsigned int) x) & 0xf)
 132 #define ELF32_ST_BIND(x)        ELF_ST_BIND(x)
 133 #define ELF32_ST_TYPE(x)        ELF_ST_TYPE(x)
 134 #define ELF64_ST_BIND(x)        ELF_ST_BIND(x)
 135 #define ELF64_ST_TYPE(x)        ELF_ST_TYPE(x)
 136
 137 typedef struct dynamic{
 138   Elf32_Sword d_tag;
 139   union{
 140     Elf32_Sword d_val;
 141     Elf32_Addr  d_ptr;
 142   } d_un;
 143 } Elf32_Dyn;
 144
 145 typedef struct {
 146   Elf64_Sxword d_tag;           /* entry tag value */
 147   union {
 148     Elf64_Xword d_val;
 149     Elf64_Addr d_ptr;
 150   } d_un;
 151 } Elf64_Dyn;
 152
 153 /* The following are used with relocations */
 154 #define ELF32_R_SYM(x) ((x) >> 8)
 155 #define ELF32_R_TYPE(x) ((x) & 0xff)
 156
 157 #define ELF64_R_SYM(i)                  ((i) >> 32)
 158 #define ELF64_R_TYPE(i)                 ((i) & 0xffffffff)
 159
 160 typedef struct elf32_rel {
 161   Elf32_Addr    r_offset;
 162   Elf32_Word    r_info;
 163 } Elf32_Rel;
 164
 165 typedef struct elf64_rel {
 166   Elf64_Addr r_offset;  /* Location at which to apply the action */
 167   Elf64_Xword r_info;   /* index and type of relocation */
 168 } Elf64_Rel;
 169
 170 typedef struct elf32_rela{
 171   Elf32_Addr    r_offset;
 172   Elf32_Word    r_info;
 173   Elf32_Sword   r_addend;
 174 } Elf32_Rela;
 175
 176 typedef struct elf64_rela {
 177   Elf64_Addr r_offset;  /* Location at which to apply the action */
 178   Elf64_Xword r_info;   /* index and type of relocation */
 179   Elf64_Sxword r_addend;        /* Constant addend used to compute value */
 180 } Elf64_Rela;
 181
 182 typedef struct elf32_sym{
 183   Elf32_Word    st_name;
 184   Elf32_Addr    st_value;
 185   Elf32_Word    st_size;
 186   unsigned char st_info;
 187   unsigned char st_other;
 188   Elf32_Half    st_shndx;
 189 } Elf32_Sym;
 190
 191 typedef struct elf64_sym {
 192   Elf64_Word st_name;           /* Symbol name, index in string tbl */
 193   unsigned char st_info;        /* Type and binding attributes */
 194   unsigned char st_other;       /* No defined meaning, 0 */
 195   Elf64_Half st_shndx;          /* Associated section index */
 196   Elf64_Addr st_value;          /* Value of the symbol */
 197   Elf64_Xword st_size;          /* Associated symbol size */
 198 } Elf64_Sym;
 199
 200
 201 #define EI_NIDENT       16
 202
 203 typedef struct elf32_hdr{
 204   unsigned char e_ident[EI_NIDENT];
 205   Elf32_Half    e_type;
 206   Elf32_Half    e_machine;
 207   Elf32_Word    e_version;
 208   Elf32_Addr    e_entry;  /* Entry point */
 209   Elf32_Off     e_phoff;
 210   Elf32_Off     e_shoff;
 211   Elf32_Word    e_flags;
 212   Elf32_Half    e_ehsize;
 213   Elf32_Half    e_phentsize;
 214   Elf32_Half    e_phnum;
 215   Elf32_Half    e_shentsize;
 216   Elf32_Half    e_shnum;
 217   Elf32_Half    e_shstrndx;
 218 } Elf32_Ehdr;
 219
 220 typedef struct elf64_hdr {
 221   unsigned char e_ident[EI_NIDENT];     /* ELF "magic number" */
 222   Elf64_Half e_type;
 223   Elf64_Half e_machine;
 224   Elf64_Word e_version;
 225   Elf64_Addr e_entry;           /* Entry point virtual address */
 226   Elf64_Off e_phoff;            /* Program header table file offset */
 227   Elf64_Off e_shoff;            /* Section header table file offset */
 228   Elf64_Word e_flags;
 229   Elf64_Half e_ehsize;
 230   Elf64_Half e_phentsize;
 231   Elf64_Half e_phnum;
 232   Elf64_Half e_shentsize;
 233   Elf64_Half e_shnum;
 234   Elf64_Half e_shstrndx;
 235 } Elf64_Ehdr;
 236
 237 /* These constants define the permissions on sections in the program
 238    header, p_flags. */
 239 #define PF_R            0x4
 240 #define PF_W            0x2
 241 #define PF_X            0x1
 242
 243 typedef struct elf32_phdr{
 244   Elf32_Word    p_type;
 245   Elf32_Off     p_offset;
 246   Elf32_Addr    p_vaddr;
 247   Elf32_Addr    p_paddr;
 248   Elf32_Word    p_filesz;
 249   Elf32_Word    p_memsz;
 250   Elf32_Word    p_flags;
 251   Elf32_Word    p_align;
 252 } Elf32_Phdr;
 253
 254 typedef struct elf64_phdr {
 255   Elf64_Word p_type;
 256   Elf64_Word p_flags;
 257   Elf64_Off p_offset;           /* Segment file offset */
 258   Elf64_Addr p_vaddr;           /* Segment virtual address */
 259   Elf64_Addr p_paddr;           /* Segment physical address */
 260   Elf64_Xword p_filesz;         /* Segment size in file */
 261   Elf64_Xword p_memsz;          /* Segment size in memory */
 262   Elf64_Xword p_align;          /* Segment alignment, file & memory */
 263 } Elf64_Phdr;
 264
 265 /* sh_type */
 266 #define SHT_NULL        0
 267 #define SHT_PROGBITS    1
 268 #define SHT_SYMTAB      2
 269 #define SHT_STRTAB      3
 270 #define SHT_RELA        4
 271 #define SHT_HASH        5
 272 #define SHT_DYNAMIC     6
 273 #define SHT_NOTE        7
 274 #define SHT_NOBITS      8
 275 #define SHT_REL         9
 276 #define SHT_SHLIB       10
 277 #define SHT_DYNSYM      11
 278 #define SHT_NUM         12
 279 #define SHT_LOPROC      0x70000000
 280 #define SHT_HIPROC      0x7fffffff
 281 #define SHT_LOUSER      0x80000000
 282 #define SHT_HIUSER      0xffffffff
 283
 284 /* sh_flags */
 285 #define SHF_WRITE               0x1
 286 #define SHF_ALLOC               0x2
 287 #define SHF_EXECINSTR           0x4
 288 #define SHF_RELA_LIVEPATCH      0x00100000
 289 #define SHF_RO_AFTER_INIT       0x00200000
 290 #define SHF_MASKPROC            0xf0000000
 291
 292 /* special section indexes */
 293 #define SHN_UNDEF       0
 294 #define SHN_LORESERVE   0xff00
 295 #define SHN_LOPROC      0xff00
 296 #define SHN_HIPROC      0xff1f
 297 #define SHN_LIVEPATCH   0xff20
 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 /*
 376  * Note to userspace developers: size of NT_SIGINFO note may increase
 377  * in the future to accomodate more fields, don't assume it is fixed!
 378  */
 379 #define NT_SIGINFO      0x53494749
 380 #define NT_FILE         0x46494c45
 381 #define NT_PRXFPREG     0x46e62b7f      /* copied from gdb5.1/include/elf/common.h */
 382 #define NT_PPC_VMX      0x100           /* PowerPC Altivec/VMX registers */
 383 #define NT_PPC_SPE      0x101           /* PowerPC SPE/EVR registers */
 384 #define NT_PPC_VSX      0x102           /* PowerPC VSX registers */
 385 #define NT_PPC_TAR      0x103           /* Target Address Register */
 386 #define NT_PPC_PPR      0x104           /* Program Priority Register */
 387 #define NT_PPC_DSCR     0x105           /* Data Stream Control Register */
 388 #define NT_PPC_EBB      0x106           /* Event Based Branch Registers */
 389 #define NT_PPC_PMU      0x107           /* Performance Monitor Registers */
 390 #define NT_PPC_TM_CGPR  0x108           /* TM checkpointed GPR Registers */
 391 #define NT_PPC_TM_CFPR  0x109           /* TM checkpointed FPR Registers */
 392 #define NT_PPC_TM_CVMX  0x10a           /* TM checkpointed VMX Registers */
 393 #define NT_PPC_TM_CVSX  0x10b           /* TM checkpointed VSX Registers */
 394 #define NT_PPC_TM_SPR   0x10c           /* TM Special Purpose Registers */
 395 #define NT_PPC_TM_CTAR  0x10d           /* TM checkpointed Target Address Register */
 396 #define NT_PPC_TM_CPPR  0x10e           /* TM checkpointed Program Priority Register */
 397 #define NT_PPC_TM_CDSCR 0x10f           /* TM checkpointed Data Stream Control Register */
 398 #define NT_386_TLS      0x200           /* i386 TLS slots (struct user_desc) */
 399 #define NT_386_IOPERM   0x201           /* x86 io permission bitmap (1=deny) */
 400 #define NT_X86_XSTATE   0x202           /* x86 extended state using xsave */
 401 #define NT_S390_HIGH_GPRS       0x300   /* s390 upper register halves */
 402 #define NT_S390_TIMER   0x301           /* s390 timer register */
 403 #define NT_S390_TODCMP  0x302           /* s390 TOD clock comparator register */
 404 #define NT_S390_TODPREG 0x303           /* s390 TOD programmable register */
 405 #define NT_S390_CTRS    0x304           /* s390 control registers */
 406 #define NT_S390_PREFIX  0x305           /* s390 prefix register */
 407 #define NT_S390_LAST_BREAK      0x306   /* s390 breaking event address */
 408 #define NT_S390_SYSTEM_CALL     0x307   /* s390 system call restart data */
 409 #define NT_S390_TDB     0x308           /* s390 transaction diagnostic block */
 410 #define NT_S390_VXRS_LOW        0x309   /* s390 vector registers 0-15 upper half */
 411 #define NT_S390_VXRS_HIGH       0x30a   /* s390 vector registers 16-31 */
 412 #define NT_ARM_VFP      0x400           /* ARM VFP/NEON registers */
 413 #define NT_ARM_TLS      0x401           /* ARM TLS register */
 414 #define NT_ARM_HW_BREAK 0x402           /* ARM hardware breakpoint registers */
 415 #define NT_ARM_HW_WATCH 0x403           /* ARM hardware watchpoint registers */
 416 #define NT_ARM_SYSTEM_CALL      0x404   /* ARM system call number */
 417 #define NT_METAG_CBUF   0x500           /* Metag catch buffer registers */
 418 #define NT_METAG_RPIPE  0x501           /* Metag read pipeline state */
 419 #define NT_METAG_TLS    0x502           /* Metag TLS pointer */
 420
 421
 422 /* Note header in a PT_NOTE section */
 423 typedef struct elf32_note {
 424   Elf32_Word    n_namesz;       /* Name size */
 425   Elf32_Word    n_descsz;       /* Content size */
 426   Elf32_Word    n_type;         /* Content type */
 427 } Elf32_Nhdr;
 428
 429 /* Note header in a PT_NOTE section */
 430 typedef struct elf64_note {
 431   Elf64_Word n_namesz;  /* Name size */
 432   Elf64_Word n_descsz;  /* Content size */
 433   Elf64_Word n_type;    /* Content type */
 434 } Elf64_Nhdr;
 435
 436 #endif /* _UAPI_LINUX_ELF_H */