output/elf.h

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 1996-2018 The NASM Authors - All Rights Reserved
   4  *   See the file AUTHORS included with the NASM distribution for
   5  *   the specific copyright holders.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following
   9  *   conditions are met:
  10  *
  11  *   * Redistributions of source code must retain the above copyright
  12  *     notice, this list of conditions and the following disclaimer.
  13  *   * Redistributions in binary form must reproduce the above
  14  *     copyright notice, this list of conditions and the following
  15  *     disclaimer in the documentation and/or other materials provided
  16  *     with the distribution.
  17  *
  18  *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  19  *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  20  *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  21  *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  22  *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  23  *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24  *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  25  *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  26  *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  29  *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  30  *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  * ----------------------------------------------------------------------- */
  33
  34 #ifndef OUTPUT_ELF_H
  35 #define OUTPUT_ELF_H
  36
  37 /*
  38  * Since NASM support both Elf32/64 file formats
  39  * we need to cover all types, structures, typedefs and etc
  40  */
  41
  42 #include "compiler.h"
  43
  44 /* Segment types */
  45 #define PT_NULL         0
  46 #define PT_LOAD         1
  47 #define PT_DYNAMIC      2
  48 #define PT_INTERP       3
  49 #define PT_NOTE         4
  50 #define PT_SHLIB        5
  51 #define PT_PHDR         6
  52 #define PT_LOOS         0x60000000
  53 #define PT_HIOS         0x6fffffff
  54 #define PT_LOPROC       0x70000000
  55 #define PT_HIPROC       0x7fffffff
  56 #define PT_GNU_EH_FRAME 0x6474e550      /* Extension, eh? */
  57
  58 /* ELF file types */
  59 #define ET_NONE         0
  60 #define ET_REL          1
  61 #define ET_EXEC         2
  62 #define ET_DYN          3
  63 #define ET_CORE         4
  64 #define ET_LOPROC       0xff00
  65 #define ET_HIPROC       0xffff
  66
  67 /* ELF machine types */
  68 #define EM_NONE         0
  69 #define EM_M32          1
  70 #define EM_SPARC        2
  71 #define EM_386          3
  72 #define EM_68K          4
  73 #define EM_88K          5
  74 #define EM_486          6       /* Not used in Linux at least */
  75 #define EM_860          7
  76 #define EM_MIPS         8       /* R3k, bigendian(?) */
  77 #define EM_MIPS_RS4_BE  10      /* R4k BE */
  78 #define EM_PARISC       15
  79 #define EM_SPARC32PLUS  18
  80 #define EM_PPC          20
  81 #define EM_PPC64        21
  82 #define EM_S390         22
  83 #define EM_SH           42
  84 #define EM_SPARCV9      43      /* v9 = SPARC64 */
  85 #define EM_H8_300H      47
  86 #define EM_H8S          48
  87 #define EM_IA_64        50
  88 #define EM_X86_64       62
  89 #define EM_CRIS         76
  90 #define EM_V850         87
  91 #define EM_ALPHA        0x9026  /* Interrim Alpha that stuck around */
  92 #define EM_CYGNUS_V850  0x9080  /* Old v850 ID used by Cygnus */
  93 #define EM_S390_OLD     0xA390  /* Obsolete interrim value for S/390 */
  94
  95 /* Dynamic type values */
  96 #define DT_NULL         0
  97 #define DT_NEEDED       1
  98 #define DT_PLTRELSZ     2
  99 #define DT_PLTGOT       3
 100 #define DT_HASH         4
 101 #define DT_STRTAB       5
 102 #define DT_SYMTAB       6
 103 #define DT_RELA         7
 104 #define DT_RELASZ       8
 105 #define DT_RELAENT      9
 106 #define DT_STRSZ        10
 107 #define DT_SYMENT       11
 108 #define DT_INIT         12
 109 #define DT_FINI         13
 110 #define DT_SONAME       14
 111 #define DT_RPATH        15
 112 #define DT_SYMBOLIC     16
 113 #define DT_REL          17
 114 #define DT_RELSZ        18
 115 #define DT_RELENT       19
 116 #define DT_PLTREL       20
 117 #define DT_DEBUG        21
 118 #define DT_TEXTREL      22
 119 #define DT_JMPREL       23
 120 #define DT_LOPROC       0x70000000
 121 #define DT_HIPROC       0x7fffffff
 122
 123 /* Auxilliary table entries */
 124 #define AT_NULL         0       /* end of vector */
 125 #define AT_IGNORE       1       /* entry should be ignored */
 126 #define AT_EXECFD       2       /* file descriptor of program */
 127 #define AT_PHDR         3       /* program headers for program */
 128 #define AT_PHENT        4       /* size of program header entry */
 129 #define AT_PHNUM        5       /* number of program headers */
 130 #define AT_PAGESZ       6       /* system page size */
 131 #define AT_BASE         7       /* base address of interpreter */
 132 #define AT_FLAGS        8       /* flags */
 133 #define AT_ENTRY        9       /* entry point of program */
 134 #define AT_NOTELF       10      /* program is not ELF */
 135 #define AT_UID          11      /* real uid */
 136 #define AT_EUID         12      /* effective uid */
 137 #define AT_GID          13      /* real gid */
 138 #define AT_EGID         14      /* effective gid */
 139 #define AT_PLATFORM     15      /* string identifying CPU for optimizations */
 140 #define AT_HWCAP        16      /* arch dependent hints at CPU capabilities */
 141 #define AT_CLKTCK       17      /* frequency at which times() increments */
 142 /* 18..22 = ? */
 143 #define AT_SECURE       23      /* secure mode boolean */
 144
 145 /* Program header permission flags */
 146 #define PF_X            0x1
 147 #define PF_W            0x2
 148 #define PF_R            0x4
 149
 150 /* Section header types */
 151 #define SHT_NULL        0
 152 #define SHT_PROGBITS    1
 153 #define SHT_SYMTAB      2
 154 #define SHT_STRTAB      3
 155 #define SHT_RELA        4
 156 #define SHT_HASH        5
 157 #define SHT_DYNAMIC     6
 158 #define SHT_NOTE        7
 159 #define SHT_NOBITS      8
 160 #define SHT_REL         9
 161 #define SHT_SHLIB       10
 162 #define SHT_DYNSYM      11
 163 #define SHT_NUM         12
 164 #define SHT_LOPROC      0x70000000
 165 #define SHT_HIPROC      0x7fffffff
 166 #define SHT_LOUSER      0x80000000
 167 #define SHT_HIUSER      0xffffffff
 168
 169 /* Section header flags */
 170 #define SHF_WRITE               (1 << 0)        /* Writable */
 171 #define SHF_ALLOC               (1 << 1)        /* Occupies memory during execution */
 172 #define SHF_EXECINSTR           (1 << 2)        /* Executable */
 173 #define SHF_MERGE               (1 << 4)        /* Might be merged */
 174 #define SHF_STRINGS             (1 << 5)        /* Contains nul-terminated strings */
 175 #define SHF_INFO_LINK           (1 << 6)        /* `sh_info' contains SHT index */
 176 #define SHF_LINK_ORDER          (1 << 7)        /* Preserve order after combining */
 177 #define SHF_OS_NONCONFORMING    (1 << 8)        /* Non-standard OS specific handling required */
 178 #define SHF_GROUP               (1 << 9)        /* Section is member of a group */
 179 #define SHF_TLS                 (1 << 10)       /* Section hold thread-local data */
 180
 181 /* Special section numbers */
 182 #define SHN_UNDEF       0
 183 #define SHN_LORESERVE   0xff00
 184 #define SHN_LOPROC      0xff00
 185 #define SHN_HIPROC      0xff1f
 186 #define SHN_ABS         0xfff1
 187 #define SHN_COMMON      0xfff2
 188 #define SHN_HIRESERVE   0xffff
 189
 190 /* Section align flag */
 191 #define SHA_ANY         1       /* No alignment constraint */
 192
 193 /* Lenght of magic at the start of a file */
 194 #define EI_NIDENT       16
 195
 196 /* Magic number constants... */
 197 #define EI_MAG0         0       /* e_ident[] indexes */
 198 #define EI_MAG1         1
 199 #define EI_MAG2         2
 200 #define EI_MAG3         3
 201 #define EI_CLASS        4
 202 #define EI_DATA         5
 203 #define EI_VERSION      6
 204 #define EI_OSABI        7
 205 #define EI_ABIVERSION   8
 206 #define EI_NINDENT      16
 207
 208 #define ELFMAG0         0x7f    /* EI_MAG */
 209 #define ELFMAG1         'E'
 210 #define ELFMAG2         'L'
 211 #define ELFMAG3         'F'
 212 #define ELFMAG          "\177ELF"
 213 #define SELFMAG         4
 214
 215 #define ELFCLASSNONE    0       /* EI_CLASS */
 216 #define ELFCLASS32      1
 217 #define ELFCLASS64      2
 218 #define ELFCLASSNUM     3
 219
 220 #define ELFDATANONE     0       /* e_ident[EI_DATA] */
 221 #define ELFDATA2LSB     1
 222 #define ELFDATA2MSB     2
 223
 224 #define EV_NONE         0       /* e_version, EI_VERSION */
 225 #define EV_CURRENT      1
 226 #define EV_NUM          2
 227
 228 #define ELFOSABI_NONE   0
 229 #define ELFOSABI_LINUX  3
 230
 231 /* Legal values for ST_BIND subfield of st_info (symbol binding) */
 232 #define STB_LOCAL       0       /* Local symbol */
 233 #define STB_GLOBAL      1       /* Global symbol */
 234 #define STB_WEAK        2       /* Weak symbol */
 235 #define STB_NUM         3       /* Number of defined types */
 236 #define STB_LOOS        10      /* Start of OS-specific */
 237 #define STB_HIOS        12      /* End of OS-specific */
 238 #define STB_LOPROC      13      /* Start of processor-specific */
 239 #define STB_HIPROC      15      /* End of processor-specific */
 240
 241 /* Symbol types */
 242 #define STT_NOTYPE      0       /* Symbol type is unspecified */
 243 #define STT_OBJECT      1       /* Symbol is a data object */
 244 #define STT_FUNC        2       /* Symbol is a code object */
 245 #define STT_SECTION     3       /* Symbol associated with a section */
 246 #define STT_FILE        4       /* Symbol's name is file name */
 247 #define STT_COMMON      5       /* Symbol is a common data object */
 248 #define STT_TLS         6       /* Symbol is thread-local data object */
 249 #define STT_NUM         7       /* Number of defined types */
 250
 251 /* Symbol visibilities */
 252 #define STV_DEFAULT     0       /* Default symbol visibility rules */
 253 #define STV_INTERNAL    1       /* Processor specific hidden class */
 254 #define STV_HIDDEN      2       /* Sym unavailable in other modules */
 255 #define STV_PROTECTED   3       /* Not preemptible, not exported */
 256
 257 /* Both Elf32_Sym and Elf64_Sym use the same one-byte st_info field  */
 258 #define ELF32_ST_BIND(i)        ((i) >> 4)
 259 #define ELF32_ST_MKBIND(i)      ((i) << 4)      /* just a helper */
 260 #define ELF32_ST_TYPE(i)        ((i) & 0xf)
 261 #define ELF32_ST_INFO(b, i)     (ELF32_ST_MKBIND(b) + ELF32_ST_TYPE(i))
 262
 263 #define ELF64_ST_BIND(i)        ELF32_ST_BIND(i)
 264 #define ELF64_ST_MKBIND(i)      ELF32_ST_MKBIND(i)
 265 #define ELF64_ST_TYPE(i)        ELF32_ST_TYPE(i)
 266 #define ELF64_ST_INFO(b, i)     ELF32_ST_INFO(b, i)
 267
 268 /*
 269  * ELF standard typedefs (yet more proof that <stdint.h> was way overdue)
 270  */
 271
 272 typedef uint16_t Elf32_Half;
 273 typedef int16_t Elf32_SHalf;
 274 typedef uint32_t Elf32_Word;
 275 typedef int32_t Elf32_Sword;
 276 typedef uint64_t Elf32_Xword;
 277 typedef int64_t Elf32_Sxword;
 278
 279 typedef uint32_t Elf32_Off;
 280 typedef uint32_t Elf32_Addr;
 281 typedef uint16_t Elf32_Section;
 282
 283 typedef uint16_t Elf64_Half;
 284 typedef int16_t Elf64_SHalf;
 285 typedef uint32_t Elf64_Word;
 286 typedef int32_t Elf64_Sword;
 287 typedef uint64_t Elf64_Xword;
 288 typedef int64_t Elf64_Sxword;
 289
 290 typedef uint64_t Elf64_Off;
 291 typedef uint64_t Elf64_Addr;
 292 typedef uint16_t Elf64_Section;
 293
 294 /*
 295  * Dynamic header
 296  */
 297
 298 typedef struct elf32_dyn {
 299         Elf32_Sword             d_tag;
 300         union {
 301                 Elf32_Sword     d_val;
 302                 Elf32_Addr      d_ptr;
 303         } d_un;
 304 } Elf32_Dyn;
 305
 306 typedef struct elf64_dyn {
 307         Elf64_Sxword            d_tag;
 308         union {
 309                 Elf64_Xword     d_val;
 310                 Elf64_Addr      d_ptr;
 311         } d_un;
 312 } Elf64_Dyn;
 313
 314 /*
 315  * Relocations
 316  */
 317
 318 #define ELF32_R_SYM(x)          ((x) >> 8)
 319 #define ELF32_R_TYPE(x)         ((x) & 0xff)
 320 #define ELF32_R_INFO(s,t)       (((Elf32_Word)(s) << 8) + ELF32_R_TYPE(t))
 321
 322 typedef struct elf32_rel {
 323         Elf32_Addr              r_offset;
 324         Elf32_Word              r_info;
 325 } Elf32_Rel;
 326
 327 typedef struct elf32_rela {
 328         Elf32_Addr              r_offset;
 329         Elf32_Word              r_info;
 330         Elf32_Sword             r_addend;
 331 } Elf32_Rela;
 332
 333 enum reloc32_type {
 334         R_386_32                =  1,   /* ordinary absolute relocation */
 335         R_386_PC32              =  2,   /* PC-relative relocation */
 336         R_386_GOT32             =  3,   /* an offset into GOT */
 337         R_386_PLT32             =  4,   /* a PC-relative offset into PLT */
 338         R_386_COPY              =  5,   /* ??? */
 339         R_386_GLOB_DAT          =  6,   /* ??? */
 340         R_386_JUMP_SLOT         =  7,   /* ??? */
 341         R_386_RELATIVE          =  8,   /* ??? */
 342         R_386_GOTOFF            =  9,   /* an offset from GOT base */
 343         R_386_GOTPC             = 10,   /* a PC-relative offset _to_ GOT */
 344         R_386_TLS_TPOFF         = 14,   /* Offset in static TLS block */
 345         R_386_TLS_IE            = 15,   /* Address of GOT entry for static TLS block offset */
 346         /* These are GNU extensions, but useful */
 347         R_386_16                = 20,   /* A 16-bit absolute relocation */
 348         R_386_PC16              = 21,   /* A 16-bit PC-relative relocation */
 349         R_386_8                 = 22,   /* An 8-bit absolute relocation */
 350         R_386_PC8               = 23    /* An 8-bit PC-relative relocation */
 351 };
 352
 353 #define ELF64_R_SYM(x)          ((x) >> 32)
 354 #define ELF64_R_TYPE(x)         ((x) & 0xffffffff)
 355 #define ELF64_R_INFO(s,t)       (((Elf64_Xword)(s) << 32) + ELF64_R_TYPE(t))
 356
 357 typedef struct elf64_rel {
 358         Elf64_Addr      r_offset;
 359         Elf64_Xword     r_info;
 360 } Elf64_Rel;
 361
 362 typedef struct elf64_rela {
 363         Elf64_Addr      r_offset;
 364         Elf64_Xword     r_info;
 365         Elf64_Sxword    r_addend;
 366 } Elf64_Rela;
 367
 368 enum reloc64_type {
 369         R_X86_64_NONE           =  0,   /* No reloc */
 370         R_X86_64_64             =  1,   /* Direct 64 bit  */
 371         R_X86_64_PC32           =  2,   /* PC relative 32 bit signed */
 372         R_X86_64_GOT32          =  3,   /* 32 bit GOT entry */
 373         R_X86_64_PLT32          =  4,   /* 32 bit PLT address */
 374         R_X86_64_COPY           =  5,   /* Copy symbol at runtime */
 375         R_X86_64_GLOB_DAT       =  6,   /* Create GOT entry */
 376         R_X86_64_JUMP_SLOT      =  7,   /* Create PLT entry */
 377         R_X86_64_RELATIVE       =  8,   /* Adjust by program base */
 378         R_X86_64_GOTPCREL       =  9,   /* 32 bit signed PC relative offset to GOT */
 379         R_X86_64_32             = 10,   /* Direct 32 bit zero extended */
 380         R_X86_64_32S            = 11,   /* Direct 32 bit sign extended */
 381         R_X86_64_16             = 12,   /* Direct 16 bit zero extended */
 382         R_X86_64_PC16           = 13,   /* 16 bit sign extended pc relative */
 383         R_X86_64_8              = 14,   /* Direct 8 bit sign extended  */
 384         R_X86_64_PC8            = 15,   /* 8 bit sign extended pc relative */
 385         R_X86_64_DTPMOD64       = 16,   /* ID of module containing symbol */
 386         R_X86_64_DTPOFF64       = 17,   /* Offset in module's TLS block */
 387         R_X86_64_TPOFF64        = 18,   /* Offset in initial TLS block */
 388         R_X86_64_TLSGD          = 19,   /* 32 bit signed PC relative offset to two GOT entries for GD symbol */
 389         R_X86_64_TLSLD          = 20,   /* 32 bit signed PC relative offset to two GOT entries for LD symbol */
 390         R_X86_64_DTPOFF32       = 21,   /* Offset in TLS block */
 391         R_X86_64_GOTTPOFF       = 22,   /* 32 bit signed PC relative offset to GOT entry for IE symbol */
 392         R_X86_64_TPOFF32        = 23,   /* Offset in initial TLS block */
 393         R_X86_64_PC64           = 24,   /* word64 S + A - P */
 394         R_X86_64_GOTOFF64       = 25,   /* word64 S + A - GOT */
 395         R_X86_64_GOTPC32        = 26,   /* word32 GOT + A - P */
 396         R_X86_64_GOT64          = 27,   /* word64 G + A */
 397         R_X86_64_GOTPCREL64     = 28,   /* word64 G + GOT - P + A */
 398         R_X86_64_GOTPC64        = 29,   /* word64 GOT - P + A */
 399         R_X86_64_GOTPLT64       = 30,   /* word64 G + A */
 400         R_X86_64_PLTOFF64       = 31,   /* word64 L - GOT + A */
 401         R_X86_64_SIZE32         = 32,   /* word32 Z + A */
 402         R_X86_64_SIZE64         = 33,   /* word64 Z + A */
 403         R_X86_64_GOTPC32_TLSDESC= 34,   /* word32 */
 404         R_X86_64_TLSDESC_CALL   = 35,   /* none */
 405         R_X86_64_TLSDESC        = 36    /* word64?2 */
 406 };
 407
 408 /*
 409  * Symbol
 410  */
 411
 412 typedef struct elf32_sym {
 413         Elf32_Word      st_name;
 414         Elf32_Addr      st_value;
 415         Elf32_Word      st_size;
 416         unsigned char   st_info;
 417         unsigned char   st_other;
 418         Elf32_Half      st_shndx;
 419 } Elf32_Sym;
 420
 421 typedef struct elf64_sym {
 422         Elf64_Word      st_name;
 423         unsigned char   st_info;
 424         unsigned char   st_other;
 425         Elf64_Half      st_shndx;
 426         Elf64_Addr      st_value;
 427         Elf64_Xword     st_size;
 428 } Elf64_Sym;
 429
 430 /*
 431  * Main file header
 432  */
 433
 434 typedef struct elf32_hdr {
 435         unsigned char   e_ident[EI_NIDENT];
 436         Elf32_Half      e_type;
 437         Elf32_Half      e_machine;
 438         Elf32_Word      e_version;
 439         Elf32_Addr      e_entry;
 440         Elf32_Off       e_phoff;
 441         Elf32_Off       e_shoff;
 442         Elf32_Word      e_flags;
 443         Elf32_Half      e_ehsize;
 444         Elf32_Half      e_phentsize;
 445         Elf32_Half      e_phnum;
 446         Elf32_Half      e_shentsize;
 447         Elf32_Half      e_shnum;
 448         Elf32_Half      e_shstrndx;
 449 } Elf32_Ehdr;
 450
 451 typedef struct elf64_hdr {
 452         unsigned char   e_ident[EI_NIDENT];
 453         Elf64_Half      e_type;
 454         Elf64_Half      e_machine;
 455         Elf64_Word      e_version;
 456         Elf64_Addr      e_entry;
 457         Elf64_Off       e_phoff;
 458         Elf64_Off       e_shoff;
 459         Elf64_Word      e_flags;
 460         Elf64_Half      e_ehsize;
 461         Elf64_Half      e_phentsize;
 462         Elf64_Half      e_phnum;
 463         Elf64_Half      e_shentsize;
 464         Elf64_Half      e_shnum;
 465         Elf64_Half      e_shstrndx;
 466 } Elf64_Ehdr;
 467
 468 /*
 469  * Program header
 470  */
 471
 472 typedef struct elf32_phdr {
 473         Elf32_Word      p_type;
 474         Elf32_Off       p_offset;
 475         Elf32_Addr      p_vaddr;
 476         Elf32_Addr      p_paddr;
 477         Elf32_Word      p_filesz;
 478         Elf32_Word      p_memsz;
 479         Elf32_Word      p_flags;
 480         Elf32_Word      p_align;
 481 } Elf32_Phdr;
 482
 483 typedef struct elf64_phdr {
 484         Elf64_Word      p_type;
 485         Elf64_Word      p_flags;
 486         Elf64_Off       p_offset;
 487         Elf64_Addr      p_vaddr;
 488         Elf64_Addr      p_paddr;
 489         Elf64_Xword     p_filesz;
 490         Elf64_Xword     p_memsz;
 491         Elf64_Xword     p_align;
 492 } Elf64_Phdr;
 493
 494 /*
 495  * Section header
 496  */
 497
 498 typedef struct elf32_shdr {
 499         Elf32_Word      sh_name;
 500         Elf32_Word      sh_type;
 501         Elf32_Word      sh_flags;
 502         Elf32_Addr      sh_addr;
 503         Elf32_Off       sh_offset;
 504         Elf32_Word      sh_size;
 505         Elf32_Word      sh_link;
 506         Elf32_Word      sh_info;
 507         Elf32_Word      sh_addralign;
 508         Elf32_Word      sh_entsize;
 509 } Elf32_Shdr;
 510
 511 typedef struct elf64_shdr {
 512         Elf64_Word      sh_name;
 513         Elf64_Word      sh_type;
 514         Elf64_Xword     sh_flags;
 515         Elf64_Addr      sh_addr;
 516         Elf64_Off       sh_offset;
 517         Elf64_Xword     sh_size;
 518         Elf64_Word      sh_link;
 519         Elf64_Word      sh_info;
 520         Elf64_Xword     sh_addralign;
 521         Elf64_Xword     sh_entsize;
 522 } Elf64_Shdr;
 523
 524 /*
 525  * Note header
 526  */
 527 typedef struct elf32_note {
 528         Elf32_Word      n_namesz;       /* Name size */
 529         Elf32_Word      n_descsz;       /* Content size */
 530         Elf32_Word      n_type;         /* Content type */
 531 } Elf32_Nhdr;
 532
 533 typedef struct elf64_note {
 534         Elf64_Word      n_namesz;       /* Name size */
 535         Elf64_Word      n_descsz;       /* Content size */
 536         Elf64_Word      n_type;         /* Content type */
 537 } Elf64_Nhdr;
 538
 539 #endif /* OUTPUT_ELF_H */