include/linux/elf.h

   1 #ifndef _LINUX_ELF_H
   2 #define _LINUX_ELF_H
   3
   4 #include <linux/types.h>
   5 #include <asm/elf.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 __s64   Elf64_Sword;
  20 typedef __u64   Elf64_Word;
  21
  22 /* These constants are for the segment types stored in the image headers */
  23 #define PT_NULL    0
  24 #define PT_LOAD    1
  25 #define PT_DYNAMIC 2
  26 #define PT_INTERP  3
  27 #define PT_NOTE    4
  28 #define PT_SHLIB   5
  29 #define PT_PHDR    6
  30 #define PT_LOPROC  0x70000000
  31 #define PT_HIPROC  0x7fffffff
  32 #define PT_MIPS_REGINFO         0x70000000
  33
  34 /* Flags in the e_flags field of the header */
  35 #define EF_MIPS_NOREORDER 0x00000001
  36 #define EF_MIPS_PIC       0x00000002
  37 #define EF_MIPS_CPIC      0x00000004
  38 #define EF_MIPS_ARCH      0xf0000000
  39
  40 /* These constants define the different elf file types */
  41 #define ET_NONE   0
  42 #define ET_REL    1
  43 #define ET_EXEC   2
  44 #define ET_DYN    3
  45 #define ET_CORE   4
  46 #define ET_LOPROC 0xff00
  47 #define ET_HIPROC 0xffff
  48
  49 /* These constants define the various ELF target machines */
  50 #define EM_NONE  0
  51 #define EM_M32   1
  52 #define EM_SPARC 2
  53 #define EM_386   3
  54 #define EM_68K   4
  55 #define EM_88K   5
  56 #define EM_486   6   /* Perhaps disused */
  57 #define EM_860   7
  58
  59 #define EM_MIPS         8       /* MIPS R3000 (officially, big-endian only) */
  60
  61 #define EM_MIPS_RS4_BE 10       /* MIPS R4000 big-endian */
  62
  63 #define EM_PARISC      15       /* HPPA */
  64
  65 #define EM_SPARC32PLUS 18       /* Sun's "v8plus" */
  66
  67 #define EM_PPC         20       /* PowerPC */
  68
  69 #define EM_SH          42       /* SuperH */
  70
  71 #define EM_SPARCV9     43       /* SPARC v9 64-bit */
  72
  73 #define EM_IA_64        50      /* HP/Intel IA-64 */
  74
  75 #define EM_X8664        62      /* AMD x86-64 */
  76
  77 /*
  78  * This is an interim value that we will use until the committee comes
  79  * up with a final number.
  80  */
  81 #define EM_ALPHA        0x9026
  82
  83 /*
  84  * This is an interim value for S390 architecture
  85  */
  86 #define EM_S390         0xA390
  87
  88 /* This is the info that is needed to parse the dynamic section of the file */
  89 #define DT_NULL         0
  90 #define DT_NEEDED       1
  91 #define DT_PLTRELSZ     2
  92 #define DT_PLTGOT       3
  93 #define DT_HASH         4
  94 #define DT_STRTAB       5
  95 #define DT_SYMTAB       6
  96 #define DT_RELA         7
  97 #define DT_RELASZ       8
  98 #define DT_RELAENT      9
  99 #define DT_STRSZ        10
 100 #define DT_SYMENT       11
 101 #define DT_INIT         12
 102 #define DT_FINI         13
 103 #define DT_SONAME       14
 104 #define DT_RPATH        15
 105 #define DT_SYMBOLIC     16
 106 #define DT_REL          17
 107 #define DT_RELSZ        18
 108 #define DT_RELENT       19
 109 #define DT_PLTREL       20
 110 #define DT_DEBUG        21
 111 #define DT_TEXTREL      22
 112 #define DT_JMPREL       23
 113 #define DT_LOPROC       0x70000000
 114 #define DT_HIPROC       0x7fffffff
 115 #define DT_MIPS_RLD_VERSION     0x70000001
 116 #define DT_MIPS_TIME_STAMP      0x70000002
 117 #define DT_MIPS_ICHECKSUM       0x70000003
 118 #define DT_MIPS_IVERSION        0x70000004
 119 #define DT_MIPS_FLAGS           0x70000005
 120   #define RHF_NONE                0
 121   #define RHF_HARDWAY             1
 122   #define RHF_NOTPOT              2
 123 #define DT_MIPS_BASE_ADDRESS    0x70000006
 124 #define DT_MIPS_CONFLICT        0x70000008
 125 #define DT_MIPS_LIBLIST         0x70000009
 126 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 127 #define DT_MIPS_CONFLICTNO      0x7000000b
 128 #define DT_MIPS_LIBLISTNO       0x70000010
 129 #define DT_MIPS_SYMTABNO        0x70000011
 130 #define DT_MIPS_UNREFEXTNO      0x70000012
 131 #define DT_MIPS_GOTSYM          0x70000013
 132 #define DT_MIPS_HIPAGENO        0x70000014
 133 #define DT_MIPS_RLD_MAP         0x70000016
 134
 135 /* This info is needed when parsing the symbol table */
 136 #define STB_LOCAL  0
 137 #define STB_GLOBAL 1
 138 #define STB_WEAK   2
 139
 140 #define STT_NOTYPE  0
 141 #define STT_OBJECT  1
 142 #define STT_FUNC    2
 143 #define STT_SECTION 3
 144 #define STT_FILE    4
 145
 146 #define ELF32_ST_BIND(x) ((x) >> 4)
 147 #define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf)
 148
 149 /* Symbolic values for the entries in the auxiliary table
 150    put on the initial stack */
 151 #define AT_NULL   0     /* end of vector */
 152 #define AT_IGNORE 1     /* entry should be ignored */
 153 #define AT_EXECFD 2     /* file descriptor of program */
 154 #define AT_PHDR   3     /* program headers for program */
 155 #define AT_PHENT  4     /* size of program header entry */
 156 #define AT_PHNUM  5     /* number of program headers */
 157 #define AT_PAGESZ 6     /* system page size */
 158 #define AT_BASE   7     /* base address of interpreter */
 159 #define AT_FLAGS  8     /* flags */
 160 #define AT_ENTRY  9     /* entry point of program */
 161 #define AT_NOTELF 10    /* program is not ELF */
 162 #define AT_UID    11    /* real uid */
 163 #define AT_EUID   12    /* effective uid */
 164 #define AT_GID    13    /* real gid */
 165 #define AT_EGID   14    /* effective gid */
 166 #define AT_PLATFORM 15  /* string identifying CPU for optimizations */
 167 #define AT_HWCAP  16    /* arch dependent hints at CPU capabilities */
 168 #define AT_CLKTCK 17    /* frequency at which times() increments */
 169
 170 typedef struct dynamic{
 171   Elf32_Sword d_tag;
 172   union{
 173     Elf32_Sword d_val;
 174     Elf32_Addr  d_ptr;
 175   } d_un;
 176 } Elf32_Dyn;
 177
 178 typedef struct {
 179   Elf64_Word d_tag;             /* entry tag value */
 180   union {
 181     Elf64_Word d_val;
 182     Elf64_Word d_ptr;
 183   } d_un;
 184 } Elf64_Dyn;
 185
 186 /* The following are used with relocations */
 187 #define ELF32_R_SYM(x) ((x) >> 8)
 188 #define ELF32_R_TYPE(x) ((x) & 0xff)
 189
 190 #define R_386_NONE      0
 191 #define R_386_32        1
 192 #define R_386_PC32      2
 193 #define R_386_GOT32     3
 194 #define R_386_PLT32     4
 195 #define R_386_COPY      5
 196 #define R_386_GLOB_DAT  6
 197 #define R_386_JMP_SLOT  7
 198 #define R_386_RELATIVE  8
 199 #define R_386_GOTOFF    9
 200 #define R_386_GOTPC     10
 201 #define R_386_NUM       11
 202
 203 #define R_MIPS_NONE             0
 204 #define R_MIPS_16               1
 205 #define R_MIPS_32               2
 206 #define R_MIPS_REL32            3
 207 #define R_MIPS_26               4
 208 #define R_MIPS_HI16             5
 209 #define R_MIPS_LO16             6
 210 #define R_MIPS_GPREL16          7
 211 #define R_MIPS_LITERAL          8
 212 #define R_MIPS_GOT16            9
 213 #define R_MIPS_PC16             10
 214 #define R_MIPS_CALL16           11
 215 #define R_MIPS_GPREL32          12
 216 /* The remaining relocs are defined on Irix, although they are not
 217    in the MIPS ELF ABI.  */
 218 #define R_MIPS_UNUSED1          13
 219 #define R_MIPS_UNUSED2          14
 220 #define R_MIPS_UNUSED3          15
 221 #define R_MIPS_SHIFT5           16
 222 #define R_MIPS_SHIFT6           17
 223 #define R_MIPS_64               18
 224 #define R_MIPS_GOT_DISP         19
 225 #define R_MIPS_GOT_PAGE         20
 226 #define R_MIPS_GOT_OFST         21
 227 /*
 228  * The following two relocation types are specified in the the MIPS ABI
 229  * conformance guide version 1.2 but not yet in the psABI.
 230  */
 231 #define R_MIPS_GOTHI16          22
 232 #define R_MIPS_GOTLO16          23
 233 #define R_MIPS_SUB              24
 234 #define R_MIPS_INSERT_A         25
 235 #define R_MIPS_INSERT_B         26
 236 #define R_MIPS_DELETE           27
 237 #define R_MIPS_HIGHER           28
 238 #define R_MIPS_HIGHEST          29
 239 /*
 240  * The following two relocation types are specified in the the MIPS ABI
 241  * conformance guide version 1.2 but not yet in the psABI.
 242  */
 243 #define R_MIPS_CALLHI16         30
 244 #define R_MIPS_CALLLO16         31
 245 /*
 246  * This range is reserved for vendor specific relocations.
 247  */
 248 #define R_MIPS_LOVENDOR         100
 249 #define R_MIPS_HIVENDOR         127
 250
 251
 252 /*
 253  * Sparc ELF relocation types
 254  */
 255 #define R_SPARC_NONE            0
 256 #define R_SPARC_8               1
 257 #define R_SPARC_16              2
 258 #define R_SPARC_32              3
 259 #define R_SPARC_DISP8           4
 260 #define R_SPARC_DISP16          5
 261 #define R_SPARC_DISP32          6
 262 #define R_SPARC_WDISP30         7
 263 #define R_SPARC_WDISP22         8
 264 #define R_SPARC_HI22            9
 265 #define R_SPARC_22              10
 266 #define R_SPARC_13              11
 267 #define R_SPARC_LO10            12
 268 #define R_SPARC_GOT10           13
 269 #define R_SPARC_GOT13           14
 270 #define R_SPARC_GOT22           15
 271 #define R_SPARC_PC10            16
 272 #define R_SPARC_PC22            17
 273 #define R_SPARC_WPLT30          18
 274 #define R_SPARC_COPY            19
 275 #define R_SPARC_GLOB_DAT        20
 276 #define R_SPARC_JMP_SLOT        21
 277 #define R_SPARC_RELATIVE        22
 278 #define R_SPARC_UA32            23
 279 #define R_SPARC_PLT32           24
 280 #define R_SPARC_HIPLT22         25
 281 #define R_SPARC_LOPLT10         26
 282 #define R_SPARC_PCPLT32         27
 283 #define R_SPARC_PCPLT22         28
 284 #define R_SPARC_PCPLT10         29
 285 #define R_SPARC_10              30
 286 #define R_SPARC_11              31
 287 #define R_SPARC_WDISP16         40
 288 #define R_SPARC_WDISP19         41
 289 #define R_SPARC_7               43
 290 #define R_SPARC_5               44
 291 #define R_SPARC_6               45
 292
 293 /* Bits present in AT_HWCAP, primarily for Sparc32.  */
 294
 295 #define HWCAP_SPARC_FLUSH       1    /* CPU supports flush instruction. */
 296 #define HWCAP_SPARC_STBAR       2
 297 #define HWCAP_SPARC_SWAP        4
 298 #define HWCAP_SPARC_MULDIV      8
 299 #define HWCAP_SPARC_V9          16
 300
 301
 302 /*
 303  * 68k ELF relocation types
 304  */
 305 #define R_68K_NONE      0
 306 #define R_68K_32        1
 307 #define R_68K_16        2
 308 #define R_68K_8         3
 309 #define R_68K_PC32      4
 310 #define R_68K_PC16      5
 311 #define R_68K_PC8       6
 312 #define R_68K_GOT32     7
 313 #define R_68K_GOT16     8
 314 #define R_68K_GOT8      9
 315 #define R_68K_GOT32O    10
 316 #define R_68K_GOT16O    11
 317 #define R_68K_GOT8O     12
 318 #define R_68K_PLT32     13
 319 #define R_68K_PLT16     14
 320 #define R_68K_PLT8      15
 321 #define R_68K_PLT32O    16
 322 #define R_68K_PLT16O    17
 323 #define R_68K_PLT8O     18
 324 #define R_68K_COPY      19
 325 #define R_68K_GLOB_DAT  20
 326 #define R_68K_JMP_SLOT  21
 327 #define R_68K_RELATIVE  22
 328
 329 /*
 330  * Alpha ELF relocation types
 331  */
 332 #define R_ALPHA_NONE            0       /* No reloc */
 333 #define R_ALPHA_REFLONG         1       /* Direct 32 bit */
 334 #define R_ALPHA_REFQUAD         2       /* Direct 64 bit */
 335 #define R_ALPHA_GPREL32         3       /* GP relative 32 bit */
 336 #define R_ALPHA_LITERAL         4       /* GP relative 16 bit w/optimization */
 337 #define R_ALPHA_LITUSE          5       /* Optimization hint for LITERAL */
 338 #define R_ALPHA_GPDISP          6       /* Add displacement to GP */
 339 #define R_ALPHA_BRADDR          7       /* PC+4 relative 23 bit shifted */
 340 #define R_ALPHA_HINT            8       /* PC+4 relative 16 bit shifted */
 341 #define R_ALPHA_SREL16          9       /* PC relative 16 bit */
 342 #define R_ALPHA_SREL32          10      /* PC relative 32 bit */
 343 #define R_ALPHA_SREL64          11      /* PC relative 64 bit */
 344 #define R_ALPHA_OP_PUSH         12      /* OP stack push */
 345 #define R_ALPHA_OP_STORE        13      /* OP stack pop and store */
 346 #define R_ALPHA_OP_PSUB         14      /* OP stack subtract */
 347 #define R_ALPHA_OP_PRSHIFT      15      /* OP stack right shift */
 348 #define R_ALPHA_GPVALUE         16
 349 #define R_ALPHA_GPRELHIGH       17
 350 #define R_ALPHA_GPRELLOW        18
 351 #define R_ALPHA_IMMED_GP_16     19
 352 #define R_ALPHA_IMMED_GP_HI32   20
 353 #define R_ALPHA_IMMED_SCN_HI32  21
 354 #define R_ALPHA_IMMED_BR_HI32   22
 355 #define R_ALPHA_IMMED_LO32      23
 356 #define R_ALPHA_COPY            24      /* Copy symbol at runtime */
 357 #define R_ALPHA_GLOB_DAT        25      /* Create GOT entry */
 358 #define R_ALPHA_JMP_SLOT        26      /* Create PLT entry */
 359 #define R_ALPHA_RELATIVE        27      /* Adjust by program base */
 360
 361 /* Legal values for e_flags field of Elf64_Ehdr.  */
 362
 363 #define EF_ALPHA_32BIT          1       /* All addresses are below 2GB */
 364
 365
 366 typedef struct elf32_rel {
 367   Elf32_Addr    r_offset;
 368   Elf32_Word    r_info;
 369 } Elf32_Rel;
 370
 371 typedef struct elf64_rel {
 372   Elf64_Addr r_offset;  /* Location at which to apply the action */
 373   Elf64_Word r_info;    /* index and type of relocation */
 374 } Elf64_Rel;
 375
 376 typedef struct elf32_rela{
 377   Elf32_Addr    r_offset;
 378   Elf32_Word    r_info;
 379   Elf32_Sword   r_addend;
 380 } Elf32_Rela;
 381
 382 typedef struct elf64_rela {
 383   Elf64_Addr r_offset;  /* Location at which to apply the action */
 384   Elf64_Word r_info;    /* index and type of relocation */
 385   Elf64_Word r_addend;  /* Constant addend used to compute value */
 386 } Elf64_Rela;
 387
 388 typedef struct elf32_sym{
 389   Elf32_Word    st_name;
 390   Elf32_Addr    st_value;
 391   Elf32_Word    st_size;
 392   unsigned char st_info;
 393   unsigned char st_other;
 394   Elf32_Half    st_shndx;
 395 } Elf32_Sym;
 396
 397 typedef struct elf64_sym {
 398   Elf32_Word st_name;           /* Symbol name, index in string tbl (yes, Elf32) */
 399   unsigned char st_info;        /* Type and binding attributes */
 400   unsigned char st_other;       /* No defined meaning, 0 */
 401   Elf64_Half st_shndx;          /* Associated section index */
 402   Elf64_Addr st_value;          /* Value of the symbol */
 403   Elf64_Word st_size;           /* Associated symbol size */
 404 } Elf64_Sym;
 405
 406
 407 #define EI_NIDENT       16
 408
 409 typedef struct elf32_hdr{
 410   unsigned char e_ident[EI_NIDENT];
 411   Elf32_Half    e_type;
 412   Elf32_Half    e_machine;
 413   Elf32_Word    e_version;
 414   Elf32_Addr    e_entry;  /* Entry point */
 415   Elf32_Off     e_phoff;
 416   Elf32_Off     e_shoff;
 417   Elf32_Word    e_flags;
 418   Elf32_Half    e_ehsize;
 419   Elf32_Half    e_phentsize;
 420   Elf32_Half    e_phnum;
 421   Elf32_Half    e_shentsize;
 422   Elf32_Half    e_shnum;
 423   Elf32_Half    e_shstrndx;
 424 } Elf32_Ehdr;
 425
 426 typedef struct elf64_hdr {
 427   unsigned char e_ident[16];            /* ELF "magic number" */
 428   Elf64_SHalf e_type;
 429   Elf64_Half e_machine;
 430   __s32 e_version;
 431   Elf64_Addr e_entry;           /* Entry point virtual address */
 432   Elf64_Off e_phoff;            /* Program header table file offset */
 433   Elf64_Off e_shoff;            /* Section header table file offset */
 434   __s32 e_flags;
 435   Elf64_SHalf e_ehsize;
 436   Elf64_SHalf e_phentsize;
 437   Elf64_SHalf e_phnum;
 438   Elf64_SHalf e_shentsize;
 439   Elf64_SHalf e_shnum;
 440   Elf64_SHalf e_shstrndx;
 441 } Elf64_Ehdr;
 442
 443 /* These constants define the permissions on sections in the program
 444    header, p_flags. */
 445 #define PF_R            0x4
 446 #define PF_W            0x2
 447 #define PF_X            0x1
 448
 449 typedef struct elf32_phdr{
 450   Elf32_Word    p_type;
 451   Elf32_Off     p_offset;
 452   Elf32_Addr    p_vaddr;
 453   Elf32_Addr    p_paddr;
 454   Elf32_Word    p_filesz;
 455   Elf32_Word    p_memsz;
 456   Elf32_Word    p_flags;
 457   Elf32_Word    p_align;
 458 } Elf32_Phdr;
 459
 460 typedef struct elf64_phdr {
 461   __s32 p_type;
 462   __s32 p_flags;
 463   Elf64_Off p_offset;           /* Segment file offset */
 464   Elf64_Addr p_vaddr;           /* Segment virtual address */
 465   Elf64_Addr p_paddr;           /* Segment physical address */
 466   Elf64_Word p_filesz;          /* Segment size in file */
 467   Elf64_Word p_memsz;           /* Segment size in memory */
 468   Elf64_Word p_align;           /* Segment alignment, file & memory */
 469 } Elf64_Phdr;
 470
 471 /* sh_type */
 472 #define SHT_NULL        0
 473 #define SHT_PROGBITS    1
 474 #define SHT_SYMTAB      2
 475 #define SHT_STRTAB      3
 476 #define SHT_RELA        4
 477 #define SHT_HASH        5
 478 #define SHT_DYNAMIC     6
 479 #define SHT_NOTE        7
 480 #define SHT_NOBITS      8
 481 #define SHT_REL         9
 482 #define SHT_SHLIB       10
 483 #define SHT_DYNSYM      11
 484 #define SHT_NUM         12
 485 #define SHT_LOPROC      0x70000000
 486 #define SHT_HIPROC      0x7fffffff
 487 #define SHT_LOUSER      0x80000000
 488 #define SHT_HIUSER      0xffffffff
 489 #define SHT_MIPS_LIST           0x70000000
 490 #define SHT_MIPS_CONFLICT       0x70000002
 491 #define SHT_MIPS_GPTAB          0x70000003
 492 #define SHT_MIPS_UCODE          0x70000004
 493
 494 /* sh_flags */
 495 #define SHF_WRITE       0x1
 496 #define SHF_ALLOC       0x2
 497 #define SHF_EXECINSTR   0x4
 498 #define SHF_MASKPROC    0xf0000000
 499 #define SHF_MIPS_GPREL  0x10000000
 500
 501 /* special section indexes */
 502 #define SHN_UNDEF       0
 503 #define SHN_LORESERVE   0xff00
 504 #define SHN_LOPROC      0xff00
 505 #define SHN_HIPROC      0xff1f
 506 #define SHN_ABS         0xfff1
 507 #define SHN_COMMON      0xfff2
 508 #define SHN_HIRESERVE   0xffff
 509 #define SHN_MIPS_ACCOMON        0xff00
 510
 511 typedef struct {
 512   Elf32_Word    sh_name;
 513   Elf32_Word    sh_type;
 514   Elf32_Word    sh_flags;
 515   Elf32_Addr    sh_addr;
 516   Elf32_Off     sh_offset;
 517   Elf32_Word    sh_size;
 518   Elf32_Word    sh_link;
 519   Elf32_Word    sh_info;
 520   Elf32_Word    sh_addralign;
 521   Elf32_Word    sh_entsize;
 522 } Elf32_Shdr;
 523
 524 typedef struct elf64_shdr {
 525   Elf32_Word sh_name;           /* Section name, index in string tbl (yes Elf32) */
 526   Elf32_Word sh_type;           /* Type of section (yes Elf32) */
 527   Elf64_Word sh_flags;          /* Miscellaneous section attributes */
 528   Elf64_Addr sh_addr;           /* Section virtual addr at execution */
 529   Elf64_Off sh_offset;          /* Section file offset */
 530   Elf64_Word sh_size;           /* Size of section in bytes */
 531   Elf32_Word sh_link;           /* Index of another section (yes Elf32) */
 532   Elf32_Word sh_info;           /* Additional section information (yes Elf32) */
 533   Elf64_Word sh_addralign;      /* Section alignment */
 534   Elf64_Word sh_entsize;        /* Entry size if section holds table */
 535 } Elf64_Shdr;
 536
 537 #define EI_MAG0         0               /* e_ident[] indexes */
 538 #define EI_MAG1         1
 539 #define EI_MAG2         2
 540 #define EI_MAG3         3
 541 #define EI_CLASS        4
 542 #define EI_DATA         5
 543 #define EI_VERSION      6
 544 #define EI_PAD          7
 545
 546 #define ELFMAG0         0x7f            /* EI_MAG */
 547 #define ELFMAG1         'E'
 548 #define ELFMAG2         'L'
 549 #define ELFMAG3         'F'
 550 #define ELFMAG          "\177ELF"
 551 #define SELFMAG         4
 552
 553 #define ELFCLASSNONE    0               /* EI_CLASS */
 554 #define ELFCLASS32      1
 555 #define ELFCLASS64      2
 556 #define ELFCLASSNUM     3
 557
 558 #define ELFDATANONE     0               /* e_ident[EI_DATA] */
 559 #define ELFDATA2LSB     1
 560 #define ELFDATA2MSB     2
 561
 562 #define EV_NONE         0               /* e_version, EI_VERSION */
 563 #define EV_CURRENT      1
 564 #define EV_NUM          2
 565
 566 /* Notes used in ET_CORE */
 567 #define NT_PRSTATUS     1
 568 #define NT_PRFPREG      2
 569 #define NT_PRPSINFO     3
 570 #define NT_TASKSTRUCT   4
 571 #define NT_PRFPXREG     20
 572
 573 /* Note header in a PT_NOTE section */
 574 typedef struct elf32_note {
 575   Elf32_Word    n_namesz;       /* Name size */
 576   Elf32_Word    n_descsz;       /* Content size */
 577   Elf32_Word    n_type;         /* Content type */
 578 } Elf32_Nhdr;
 579
 580 /* Note header in a PT_NOTE section */
 581 /*
 582  * For now we use the 32 bit version of the structure until we figure
 583  * out whether we need anything better.  Note - on the Alpha, "unsigned int"
 584  * is only 32 bits.
 585  */
 586 typedef struct elf64_note {
 587   Elf32_Word n_namesz;  /* Name size */
 588   Elf32_Word n_descsz;  /* Content size */
 589   Elf32_Word n_type;    /* Content type */
 590 } Elf64_Nhdr;
 591
 592 #if ELF_CLASS == ELFCLASS32
 593
 594 extern Elf32_Dyn _DYNAMIC [];
 595 #define elfhdr          elf32_hdr
 596 #define elf_phdr        elf32_phdr
 597 #define elf_note        elf32_note
 598
 599 #else
 600
 601 extern Elf64_Dyn _DYNAMIC [];
 602 #define elfhdr          elf64_hdr
 603 #define elf_phdr        elf64_phdr
 604 #define elf_note        elf64_note
 605
 606 #endif
 607
 608
 609 #endif /* _LINUX_ELF_H */