include/elf.h

   1 /*
   2  * Copyright (c) 1995, 1996, 2001, 2002
   3  * Erik Theisen.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 /*
  29  * This is the ELF ABI header file
  30  * formerly known as "elf_abi.h".
  31  */
  32
  33 #ifndef _ELF_H
  34 #define _ELF_H
  35
  36 #if defined(__BEOS__)    || \
  37     defined(__NetBSD__)  || \
  38     defined(__FreeBSD__) || \
  39     defined(__sun__)     || \
  40     defined(__APPLE__)
  41 #include <inttypes.h>
  42 #elif (defined(__linux__) && defined(USE_HOSTCC)) || defined(__WIN32__)
  43 #include <stdint.h>
  44 #endif
  45
  46 /*
  47  *  This version doesn't work for 64-bit ABIs - Erik.
  48  */
  49
  50 /*
  51  * These typedefs need to be handled better.
  52  */
  53 typedef uint32_t        Elf32_Addr;     /* Unsigned program address */
  54 typedef uint32_t        Elf32_Off;      /* Unsigned file offset */
  55 typedef int32_t         Elf32_Sword;    /* Signed large integer */
  56 typedef uint32_t        Elf32_Word;     /* Unsigned large integer */
  57 typedef uint16_t        Elf32_Half;     /* Unsigned medium integer */
  58
  59 /* e_ident[] identification indexes */
  60 #define EI_MAG0         0               /* file ID */
  61 #define EI_MAG1         1               /* file ID */
  62 #define EI_MAG2         2               /* file ID */
  63 #define EI_MAG3         3               /* file ID */
  64 #define EI_CLASS        4               /* file class */
  65 #define EI_DATA         5               /* data encoding */
  66 #define EI_VERSION      6               /* ELF header version */
  67 #define EI_OSABI        7               /* OS/ABI specific ELF extensions */
  68 #define EI_ABIVERSION   8               /* ABI target version */
  69 #define EI_PAD          9               /* start of pad bytes */
  70 #define EI_NIDENT       16              /* Size of e_ident[] */
  71
  72 /* e_ident[] magic number */
  73 #define ELFMAG0         0x7f            /* e_ident[EI_MAG0] */
  74 #define ELFMAG1         'E'             /* e_ident[EI_MAG1] */
  75 #define ELFMAG2         'L'             /* e_ident[EI_MAG2] */
  76 #define ELFMAG3         'F'             /* e_ident[EI_MAG3] */
  77 #define ELFMAG          "\177ELF"       /* magic */
  78 #define SELFMAG         4               /* size of magic */
  79
  80 /* e_ident[] file class */
  81 #define ELFCLASSNONE    0               /* invalid */
  82 #define ELFCLASS32      1               /* 32-bit objs */
  83 #define ELFCLASS64      2               /* 64-bit objs */
  84 #define ELFCLASSNUM     3               /* number of classes */
  85
  86 /* e_ident[] data encoding */
  87 #define ELFDATANONE     0               /* invalid */
  88 #define ELFDATA2LSB     1               /* Little-Endian */
  89 #define ELFDATA2MSB     2               /* Big-Endian */
  90 #define ELFDATANUM      3               /* number of data encode defines */
  91
  92 /* e_ident[] OS/ABI specific ELF extensions */
  93 #define ELFOSABI_NONE           0       /* No extension specified */
  94 #define ELFOSABI_HPUX           1       /* Hewlett-Packard HP-UX */
  95 #define ELFOSABI_NETBSD         2       /* NetBSD */
  96 #define ELFOSABI_LINUX          3       /* Linux */
  97 #define ELFOSABI_SOLARIS        6       /* Sun Solaris */
  98 #define ELFOSABI_AIX            7       /* AIX */
  99 #define ELFOSABI_IRIX           8       /* IRIX */
 100 #define ELFOSABI_FREEBSD        9       /* FreeBSD */
 101 #define ELFOSABI_TRU64          10      /* Compaq TRU64 UNIX */
 102 #define ELFOSABI_MODESTO        11      /* Novell Modesto */
 103 #define ELFOSABI_OPENBSD        12      /* OpenBSD */
 104 /* 64-255 Architecture-specific value range */
 105
 106 /* e_ident[] ABI Version */
 107 #define ELFABIVERSION           0
 108
 109 /* e_ident */
 110 #define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
 111                       (ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
 112                       (ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
 113                       (ehdr).e_ident[EI_MAG3] == ELFMAG3)
 114
 115 /* ELF Header */
 116 typedef struct elfhdr{
 117         unsigned char   e_ident[EI_NIDENT]; /* ELF Identification */
 118         Elf32_Half      e_type;         /* object file type */
 119         Elf32_Half      e_machine;      /* machine */
 120         Elf32_Word      e_version;      /* object file version */
 121         Elf32_Addr      e_entry;        /* virtual entry point */
 122         Elf32_Off       e_phoff;        /* program header table offset */
 123         Elf32_Off       e_shoff;        /* section header table offset */
 124         Elf32_Word      e_flags;        /* processor-specific flags */
 125         Elf32_Half      e_ehsize;       /* ELF header size */
 126         Elf32_Half      e_phentsize;    /* program header entry size */
 127         Elf32_Half      e_phnum;        /* number of program header entries */
 128         Elf32_Half      e_shentsize;    /* section header entry size */
 129         Elf32_Half      e_shnum;        /* number of section header entries */
 130         Elf32_Half      e_shstrndx;     /* section header table's "section
 131                                            header string table" entry offset */
 132 } Elf32_Ehdr;
 133
 134 /* e_type */
 135 #define ET_NONE         0               /* No file type */
 136 #define ET_REL          1               /* relocatable file */
 137 #define ET_EXEC         2               /* executable file */
 138 #define ET_DYN          3               /* shared object file */
 139 #define ET_CORE         4               /* core file */
 140 #define ET_NUM          5               /* number of types */
 141 #define ET_LOOS         0xfe00          /* reserved range for operating */
 142 #define ET_HIOS         0xfeff          /*  system specific e_type */
 143 #define ET_LOPROC       0xff00          /* reserved range for processor */
 144 #define ET_HIPROC       0xffff          /*  specific e_type */
 145
 146 /* e_machine */
 147 #define EM_NONE         0               /* No Machine */
 148 #define EM_M32          1               /* AT&T WE 32100 */
 149 #define EM_SPARC        2               /* SPARC */
 150 #define EM_386          3               /* Intel 80386 */
 151 #define EM_68K          4               /* Motorola 68000 */
 152 #define EM_88K          5               /* Motorola 88000 */
 153 #if 0
 154 #define EM_486          6               /* RESERVED - was Intel 80486 */
 155 #endif
 156 #define EM_860          7               /* Intel 80860 */
 157 #define EM_MIPS         8               /* MIPS R3000 Big-Endian only */
 158 #define EM_S370         9               /* IBM System/370 Processor */
 159 #define EM_MIPS_RS4_BE  10              /* MIPS R4000 Big-Endian */
 160 #if 0
 161 #define EM_SPARC64      11              /* RESERVED - was SPARC v9
 162                                              64-bit unoffical */
 163 #endif
 164 /* RESERVED 11-14 for future use */
 165 #define EM_PARISC       15              /* HPPA */
 166 /* RESERVED 16 for future use */
 167 #define EM_VPP500       17              /* Fujitsu VPP500 */
 168 #define EM_SPARC32PLUS  18              /* Enhanced instruction set SPARC */
 169 #define EM_960          19              /* Intel 80960 */
 170 #define EM_PPC          20              /* PowerPC */
 171 #define EM_PPC64        21              /* 64-bit PowerPC */
 172 #define EM_S390         22              /* IBM System/390 Processor */
 173 /* RESERVED 23-35 for future use */
 174 #define EM_V800         36              /* NEC V800 */
 175 #define EM_FR20         37              /* Fujitsu FR20 */
 176 #define EM_RH32         38              /* TRW RH-32 */
 177 #define EM_RCE          39              /* Motorola RCE */
 178 #define EM_ARM          40              /* Advanced Risc Machines ARM */
 179 #define EM_ALPHA        41              /* Digital Alpha */
 180 #define EM_SH           42              /* Hitachi SH */
 181 #define EM_SPARCV9      43              /* SPARC Version 9 */
 182 #define EM_TRICORE      44              /* Siemens TriCore embedded processor */
 183 #define EM_ARC          45              /* Argonaut RISC Core */
 184 #define EM_H8_300       46              /* Hitachi H8/300 */
 185 #define EM_H8_300H      47              /* Hitachi H8/300H */
 186 #define EM_H8S          48              /* Hitachi H8S */
 187 #define EM_H8_500       49              /* Hitachi H8/500 */
 188 #define EM_IA_64        50              /* Intel Merced */
 189 #define EM_MIPS_X       51              /* Stanford MIPS-X */
 190 #define EM_COLDFIRE     52              /* Motorola Coldfire */
 191 #define EM_68HC12       53              /* Motorola M68HC12 */
 192 #define EM_MMA          54              /* Fujitsu MMA Multimedia Accelerator*/
 193 #define EM_PCP          55              /* Siemens PCP */
 194 #define EM_NCPU         56              /* Sony nCPU embeeded RISC */
 195 #define EM_NDR1         57              /* Denso NDR1 microprocessor */
 196 #define EM_STARCORE     58              /* Motorola Start*Core processor */
 197 #define EM_ME16         59              /* Toyota ME16 processor */
 198 #define EM_ST100        60              /* STMicroelectronic ST100 processor */
 199 #define EM_TINYJ        61              /* Advanced Logic Corp. Tinyj emb.fam*/
 200 #define EM_X86_64       62              /* AMD x86-64 */
 201 #define EM_PDSP         63              /* Sony DSP Processor */
 202 /* RESERVED 64,65 for future use */
 203 #define EM_FX66         66              /* Siemens FX66 microcontroller */
 204 #define EM_ST9PLUS      67              /* STMicroelectronics ST9+ 8/16 mc */
 205 #define EM_ST7          68              /* STmicroelectronics ST7 8 bit mc */
 206 #define EM_68HC16       69              /* Motorola MC68HC16 microcontroller */
 207 #define EM_68HC11       70              /* Motorola MC68HC11 microcontroller */
 208 #define EM_68HC08       71              /* Motorola MC68HC08 microcontroller */
 209 #define EM_68HC05       72              /* Motorola MC68HC05 microcontroller */
 210 #define EM_SVX          73              /* Silicon Graphics SVx */
 211 #define EM_ST19         74              /* STMicroelectronics ST19 8 bit mc */
 212 #define EM_VAX          75              /* Digital VAX */
 213 #define EM_CHRIS        76              /* Axis Communications embedded proc. */
 214 #define EM_JAVELIN      77              /* Infineon Technologies emb. proc. */
 215 #define EM_FIREPATH     78              /* Element 14 64-bit DSP Processor */
 216 #define EM_ZSP          79              /* LSI Logic 16-bit DSP Processor */
 217 #define EM_MMIX         80              /* Donald Knuth's edu 64-bit proc. */
 218 #define EM_HUANY        81              /* Harvard University mach-indep objs */
 219 #define EM_PRISM        82              /* SiTera Prism */
 220 #define EM_AVR          83              /* Atmel AVR 8-bit microcontroller */
 221 #define EM_FR30         84              /* Fujitsu FR30 */
 222 #define EM_D10V         85              /* Mitsubishi DV10V */
 223 #define EM_D30V         86              /* Mitsubishi DV30V */
 224 #define EM_V850         87              /* NEC v850 */
 225 #define EM_M32R         88              /* Mitsubishi M32R */
 226 #define EM_MN10300      89              /* Matsushita MN10200 */
 227 #define EM_MN10200      90              /* Matsushita MN10200 */
 228 #define EM_PJ           91              /* picoJava */
 229 #define EM_NUM          92              /* number of machine types */
 230
 231 /* Version */
 232 #define EV_NONE         0               /* Invalid */
 233 #define EV_CURRENT      1               /* Current */
 234 #define EV_NUM          2               /* number of versions */
 235
 236 /* Section Header */
 237 typedef struct {
 238         Elf32_Word      sh_name;        /* name - index into section header
 239                                            string table section */
 240         Elf32_Word      sh_type;        /* type */
 241         Elf32_Word      sh_flags;       /* flags */
 242         Elf32_Addr      sh_addr;        /* address */
 243         Elf32_Off       sh_offset;      /* file offset */
 244         Elf32_Word      sh_size;        /* section size */
 245         Elf32_Word      sh_link;        /* section header table index link */
 246         Elf32_Word      sh_info;        /* extra information */
 247         Elf32_Word      sh_addralign;   /* address alignment */
 248         Elf32_Word      sh_entsize;     /* section entry size */
 249 } Elf32_Shdr;
 250
 251 /* Special Section Indexes */
 252 #define SHN_UNDEF       0               /* undefined */
 253 #define SHN_LORESERVE   0xff00          /* lower bounds of reserved indexes */
 254 #define SHN_LOPROC      0xff00          /* reserved range for processor */
 255 #define SHN_HIPROC      0xff1f          /*   specific section indexes */
 256 #define SHN_LOOS        0xff20          /* reserved range for operating */
 257 #define SHN_HIOS        0xff3f          /*   specific semantics */
 258 #define SHN_ABS         0xfff1          /* absolute value */
 259 #define SHN_COMMON      0xfff2          /* common symbol */
 260 #define SHN_XINDEX      0xffff          /* Index is an extra table */
 261 #define SHN_HIRESERVE   0xffff          /* upper bounds of reserved indexes */
 262
 263 /* sh_type */
 264 #define SHT_NULL        0               /* inactive */
 265 #define SHT_PROGBITS    1               /* program defined information */
 266 #define SHT_SYMTAB      2               /* symbol table section */
 267 #define SHT_STRTAB      3               /* string table section */
 268 #define SHT_RELA        4               /* relocation section with addends*/
 269 #define SHT_HASH        5               /* symbol hash table section */
 270 #define SHT_DYNAMIC     6               /* dynamic section */
 271 #define SHT_NOTE        7               /* note section */
 272 #define SHT_NOBITS      8               /* no space section */
 273 #define SHT_REL         9               /* relation section without addends */
 274 #define SHT_SHLIB       10              /* reserved - purpose unknown */
 275 #define SHT_DYNSYM      11              /* dynamic symbol table section */
 276 #define SHT_INIT_ARRAY  14              /* Array of constructors */
 277 #define SHT_FINI_ARRAY  15              /* Array of destructors */
 278 #define SHT_PREINIT_ARRAY 16            /* Array of pre-constructors */
 279 #define SHT_GROUP       17              /* Section group */
 280 #define SHT_SYMTAB_SHNDX 18             /* Extended section indeces */
 281 #define SHT_NUM         19              /* number of section types */
 282 #define SHT_LOOS        0x60000000      /* Start OS-specific */
 283 #define SHT_HIOS        0x6fffffff      /* End OS-specific */
 284 #define SHT_LOPROC      0x70000000      /* reserved range for processor */
 285 #define SHT_HIPROC      0x7fffffff      /*  specific section header types */
 286 #define SHT_LOUSER      0x80000000      /* reserved range for application */
 287 #define SHT_HIUSER      0xffffffff      /*  specific indexes */
 288
 289 /* Section names */
 290 #define ELF_BSS         ".bss"          /* uninitialized data */
 291 #define ELF_COMMENT     ".comment"      /* version control information */
 292 #define ELF_DATA        ".data"         /* initialized data */
 293 #define ELF_DATA1       ".data1"        /* initialized data */
 294 #define ELF_DEBUG       ".debug"        /* debug */
 295 #define ELF_DYNAMIC     ".dynamic"      /* dynamic linking information */
 296 #define ELF_DYNSTR      ".dynstr"       /* dynamic string table */
 297 #define ELF_DYNSYM      ".dynsym"       /* dynamic symbol table */
 298 #define ELF_FINI        ".fini"         /* termination code */
 299 #define ELF_FINI_ARRAY  ".fini_array"   /* Array of destructors */
 300 #define ELF_GOT         ".got"          /* global offset table */
 301 #define ELF_HASH        ".hash"         /* symbol hash table */
 302 #define ELF_INIT        ".init"         /* initialization code */
 303 #define ELF_INIT_ARRAY  ".init_array"   /* Array of constuctors */
 304 #define ELF_INTERP      ".interp"       /* Pathname of program interpreter */
 305 #define ELF_LINE        ".line"         /* Symbolic line numnber information */
 306 #define ELF_NOTE        ".note"         /* Contains note section */
 307 #define ELF_PLT         ".plt"          /* Procedure linkage table */
 308 #define ELF_PREINIT_ARRAY ".preinit_array" /* Array of pre-constructors */
 309 #define ELF_REL_DATA    ".rel.data"     /* relocation data */
 310 #define ELF_REL_FINI    ".rel.fini"     /* relocation termination code */
 311 #define ELF_REL_INIT    ".rel.init"     /* relocation initialization code */
 312 #define ELF_REL_DYN     ".rel.dyn"      /* relocaltion dynamic link info */
 313 #define ELF_REL_RODATA  ".rel.rodata"   /* relocation read-only data */
 314 #define ELF_REL_TEXT    ".rel.text"     /* relocation code */
 315 #define ELF_RODATA      ".rodata"       /* read-only data */
 316 #define ELF_RODATA1     ".rodata1"      /* read-only data */
 317 #define ELF_SHSTRTAB    ".shstrtab"     /* section header string table */
 318 #define ELF_STRTAB      ".strtab"       /* string table */
 319 #define ELF_SYMTAB      ".symtab"       /* symbol table */
 320 #define ELF_SYMTAB_SHNDX ".symtab_shndx"/* symbol table section index */
 321 #define ELF_TBSS        ".tbss"         /* thread local uninit data */
 322 #define ELF_TDATA       ".tdata"        /* thread local init data */
 323 #define ELF_TDATA1      ".tdata1"       /* thread local init data */
 324 #define ELF_TEXT        ".text"         /* code */
 325
 326 /* Section Attribute Flags - sh_flags */
 327 #define SHF_WRITE       0x1             /* Writable */
 328 #define SHF_ALLOC       0x2             /* occupies memory */
 329 #define SHF_EXECINSTR   0x4             /* executable */
 330 #define SHF_MERGE       0x10            /* Might be merged */
 331 #define SHF_STRINGS     0x20            /* Contains NULL terminated strings */
 332 #define SHF_INFO_LINK   0x40            /* sh_info contains SHT index */
 333 #define SHF_LINK_ORDER  0x80            /* Preserve order after combining*/
 334 #define SHF_OS_NONCONFORMING 0x100      /* Non-standard OS specific handling */
 335 #define SHF_GROUP       0x200           /* Member of section group */
 336 #define SHF_TLS         0x400           /* Thread local storage */
 337 #define SHF_MASKOS      0x0ff00000      /* OS specific */
 338 #define SHF_MASKPROC    0xf0000000      /* reserved bits for processor */
 339                                         /*  specific section attributes */
 340
 341 /* Section Group Flags */
 342 #define GRP_COMDAT      0x1             /* COMDAT group */
 343 #define GRP_MASKOS      0x0ff00000      /* Mask OS specific flags */
 344 #define GRP_MASKPROC    0xf0000000      /* Mask processor specific flags */
 345
 346 /* Symbol Table Entry */
 347 typedef struct elf32_sym {
 348         Elf32_Word      st_name;        /* name - index into string table */
 349         Elf32_Addr      st_value;       /* symbol value */
 350         Elf32_Word      st_size;        /* symbol size */
 351         unsigned char   st_info;        /* type and binding */
 352         unsigned char   st_other;       /* 0 - no defined meaning */
 353         Elf32_Half      st_shndx;       /* section header index */
 354 } Elf32_Sym;
 355
 356 /* Symbol table index */
 357 #define STN_UNDEF       0               /* undefined */
 358
 359 /* Extract symbol info - st_info */
 360 #define ELF32_ST_BIND(x)        ((x) >> 4)
 361 #define ELF32_ST_TYPE(x)        (((unsigned int) x) & 0xf)
 362 #define ELF32_ST_INFO(b,t)      (((b) << 4) + ((t) & 0xf))
 363 #define ELF32_ST_VISIBILITY(x)  ((x) & 0x3)
 364
 365 /* Symbol Binding - ELF32_ST_BIND - st_info */
 366 #define STB_LOCAL       0               /* Local symbol */
 367 #define STB_GLOBAL      1               /* Global symbol */
 368 #define STB_WEAK        2               /* like global - lower precedence */
 369 #define STB_NUM         3               /* number of symbol bindings */
 370 #define STB_LOOS        10              /* reserved range for operating */
 371 #define STB_HIOS        12              /*   system specific symbol bindings */
 372 #define STB_LOPROC      13              /* reserved range for processor */
 373 #define STB_HIPROC      15              /*  specific symbol bindings */
 374
 375 /* Symbol type - ELF32_ST_TYPE - st_info */
 376 #define STT_NOTYPE      0               /* not specified */
 377 #define STT_OBJECT      1               /* data object */
 378 #define STT_FUNC        2               /* function */
 379 #define STT_SECTION     3               /* section */
 380 #define STT_FILE        4               /* file */
 381 #define STT_NUM         5               /* number of symbol types */
 382 #define STT_TLS         6               /* Thread local storage symbol */
 383 #define STT_LOOS        10              /* reserved range for operating */
 384 #define STT_HIOS        12              /*  system specific symbol types */
 385 #define STT_LOPROC      13              /* reserved range for processor */
 386 #define STT_HIPROC      15              /*  specific symbol types */
 387
 388 /* Symbol visibility - ELF32_ST_VISIBILITY - st_other */
 389 #define STV_DEFAULT     0               /* Normal visibility rules */
 390 #define STV_INTERNAL    1               /* Processor specific hidden class */
 391 #define STV_HIDDEN      2               /* Symbol unavailable in other mods */
 392 #define STV_PROTECTED   3               /* Not preemptible, not exported */
 393
 394
 395 /* Relocation entry with implicit addend */
 396 typedef struct
 397 {
 398         Elf32_Addr      r_offset;       /* offset of relocation */
 399         Elf32_Word      r_info;         /* symbol table index and type */
 400 } Elf32_Rel;
 401
 402 /* Relocation entry with explicit addend */
 403 typedef struct
 404 {
 405         Elf32_Addr      r_offset;       /* offset of relocation */
 406         Elf32_Word      r_info;         /* symbol table index and type */
 407         Elf32_Sword     r_addend;
 408 } Elf32_Rela;
 409
 410 /* Extract relocation info - r_info */
 411 #define ELF32_R_SYM(i)          ((i) >> 8)
 412 #define ELF32_R_TYPE(i)         ((unsigned char) (i))
 413 #define ELF32_R_INFO(s,t)       (((s) << 8) + (unsigned char)(t))
 414
 415 /* Program Header */
 416 typedef struct {
 417         Elf32_Word      p_type;         /* segment type */
 418         Elf32_Off       p_offset;       /* segment offset */
 419         Elf32_Addr      p_vaddr;        /* virtual address of segment */
 420         Elf32_Addr      p_paddr;        /* physical address - ignored? */
 421         Elf32_Word      p_filesz;       /* number of bytes in file for seg. */
 422         Elf32_Word      p_memsz;        /* number of bytes in mem. for seg. */
 423         Elf32_Word      p_flags;        /* flags */
 424         Elf32_Word      p_align;        /* memory alignment */
 425 } Elf32_Phdr;
 426
 427 /* Segment types - p_type */
 428 #define PT_NULL         0               /* unused */
 429 #define PT_LOAD         1               /* loadable segment */
 430 #define PT_DYNAMIC      2               /* dynamic linking section */
 431 #define PT_INTERP       3               /* the RTLD */
 432 #define PT_NOTE         4               /* auxiliary information */
 433 #define PT_SHLIB        5               /* reserved - purpose undefined */
 434 #define PT_PHDR         6               /* program header */
 435 #define PT_TLS          7               /* Thread local storage template */
 436 #define PT_NUM          8               /* Number of segment types */
 437 #define PT_LOOS         0x60000000      /* reserved range for operating */
 438 #define PT_HIOS         0x6fffffff      /*   system specific segment types */
 439 #define PT_LOPROC       0x70000000      /* reserved range for processor */
 440 #define PT_HIPROC       0x7fffffff      /*  specific segment types */
 441
 442 /* Segment flags - p_flags */
 443 #define PF_X            0x1             /* Executable */
 444 #define PF_W            0x2             /* Writable */
 445 #define PF_R            0x4             /* Readable */
 446 #define PF_MASKOS       0x0ff00000      /* OS specific segment flags */
 447 #define PF_MASKPROC     0xf0000000      /* reserved bits for processor */
 448                                         /*  specific segment flags */
 449 /* Dynamic structure */
 450 typedef struct
 451 {
 452         Elf32_Sword     d_tag;          /* controls meaning of d_val */
 453         union
 454         {
 455                 Elf32_Word      d_val;  /* Multiple meanings - see d_tag */
 456                 Elf32_Addr      d_ptr;  /* program virtual address */
 457         } d_un;
 458 } Elf32_Dyn;
 459
 460 extern Elf32_Dyn        _DYNAMIC[];
 461
 462 /* Dynamic Array Tags - d_tag */
 463 #define DT_NULL         0               /* marks end of _DYNAMIC array */
 464 #define DT_NEEDED       1               /* string table offset of needed lib */
 465 #define DT_PLTRELSZ     2               /* size of relocation entries in PLT */
 466 #define DT_PLTGOT       3               /* address PLT/GOT */
 467 #define DT_HASH         4               /* address of symbol hash table */
 468 #define DT_STRTAB       5               /* address of string table */
 469 #define DT_SYMTAB       6               /* address of symbol table */
 470 #define DT_RELA         7               /* address of relocation table */
 471 #define DT_RELASZ       8               /* size of relocation table */
 472 #define DT_RELAENT      9               /* size of relocation entry */
 473 #define DT_STRSZ        10              /* size of string table */
 474 #define DT_SYMENT       11              /* size of symbol table entry */
 475 #define DT_INIT         12              /* address of initialization func. */
 476 #define DT_FINI         13              /* address of termination function */
 477 #define DT_SONAME       14              /* string table offset of shared obj */
 478 #define DT_RPATH        15              /* string table offset of library
 479                                            search path */
 480 #define DT_SYMBOLIC     16              /* start sym search in shared obj. */
 481 #define DT_REL          17              /* address of rel. tbl. w addends */
 482 #define DT_RELSZ        18              /* size of DT_REL relocation table */
 483 #define DT_RELENT       19              /* size of DT_REL relocation entry */
 484 #define DT_PLTREL       20              /* PLT referenced relocation entry */
 485 #define DT_DEBUG        21              /* bugger */
 486 #define DT_TEXTREL      22              /* Allow rel. mod. to unwritable seg */
 487 #define DT_JMPREL       23              /* add. of PLT's relocation entries */
 488 #define DT_BIND_NOW     24              /* Process relocations of object */
 489 #define DT_INIT_ARRAY   25              /* Array with addresses of init fct */
 490 #define DT_FINI_ARRAY   26              /* Array with addresses of fini fct */
 491 #define DT_INIT_ARRAYSZ 27              /* Size in bytes of DT_INIT_ARRAY */
 492 #define DT_FINI_ARRAYSZ 28              /* Size in bytes of DT_FINI_ARRAY */
 493 #define DT_RUNPATH      29              /* Library search path */
 494 #define DT_FLAGS        30              /* Flags for the object being loaded */
 495 #define DT_ENCODING     32              /* Start of encoded range */
 496 #define DT_PREINIT_ARRAY 32             /* Array with addresses of preinit fct*/
 497 #define DT_PREINIT_ARRAYSZ 33           /* size in bytes of DT_PREINIT_ARRAY */
 498 #define DT_NUM          34              /* Number used. */
 499 #define DT_LOOS         0x60000000      /* reserved range for OS */
 500 #define DT_HIOS         0x6fffffff      /*   specific dynamic array tags */
 501 #define DT_LOPROC       0x70000000      /* reserved range for processor */
 502 #define DT_HIPROC       0x7fffffff      /*  specific dynamic array tags */
 503
 504 /* Dynamic Tag Flags - d_un.d_val */
 505 #define DF_ORIGIN       0x01            /* Object may use DF_ORIGIN */
 506 #define DF_SYMBOLIC     0x02            /* Symbol resolutions starts here */
 507 #define DF_TEXTREL      0x04            /* Object contains text relocations */
 508 #define DF_BIND_NOW     0x08            /* No lazy binding for this object */
 509 #define DF_STATIC_TLS   0x10            /* Static thread local storage */
 510
 511 /* Standard ELF hashing function */
 512 unsigned long elf_hash(const unsigned char *name);
 513
 514 #define ELF_TARG_VER    1       /* The ver for which this code is intended */
 515
 516 /*
 517  * XXX - PowerPC defines really don't belong in here,
 518  * but we'll put them in for simplicity.
 519  */
 520
 521 /* Values for Elf32/64_Ehdr.e_flags.  */
 522 #define EF_PPC_EMB              0x80000000      /* PowerPC embedded flag */
 523
 524 /* Cygnus local bits below */
 525 #define EF_PPC_RELOCATABLE      0x00010000      /* PowerPC -mrelocatable flag*/
 526 #define EF_PPC_RELOCATABLE_LIB  0x00008000      /* PowerPC -mrelocatable-lib
 527                                                    flag */
 528
 529 /* PowerPC relocations defined by the ABIs */
 530 #define R_PPC_NONE              0
 531 #define R_PPC_ADDR32            1       /* 32bit absolute address */
 532 #define R_PPC_ADDR24            2       /* 26bit address, 2 bits ignored.  */
 533 #define R_PPC_ADDR16            3       /* 16bit absolute address */
 534 #define R_PPC_ADDR16_LO         4       /* lower 16bit of absolute address */
 535 #define R_PPC_ADDR16_HI         5       /* high 16bit of absolute address */
 536 #define R_PPC_ADDR16_HA         6       /* adjusted high 16bit */
 537 #define R_PPC_ADDR14            7       /* 16bit address, 2 bits ignored */
 538 #define R_PPC_ADDR14_BRTAKEN    8
 539 #define R_PPC_ADDR14_BRNTAKEN   9
 540 #define R_PPC_REL24             10      /* PC relative 26 bit */
 541 #define R_PPC_REL14             11      /* PC relative 16 bit */
 542 #define R_PPC_REL14_BRTAKEN     12
 543 #define R_PPC_REL14_BRNTAKEN    13
 544 #define R_PPC_GOT16             14
 545 #define R_PPC_GOT16_LO          15
 546 #define R_PPC_GOT16_HI          16
 547 #define R_PPC_GOT16_HA          17
 548 #define R_PPC_PLTREL24          18
 549 #define R_PPC_COPY              19
 550 #define R_PPC_GLOB_DAT          20
 551 #define R_PPC_JMP_SLOT          21
 552 #define R_PPC_RELATIVE          22
 553 #define R_PPC_LOCAL24PC         23
 554 #define R_PPC_UADDR32           24
 555 #define R_PPC_UADDR16           25
 556 #define R_PPC_REL32             26
 557 #define R_PPC_PLT32             27
 558 #define R_PPC_PLTREL32          28
 559 #define R_PPC_PLT16_LO          29
 560 #define R_PPC_PLT16_HI          30
 561 #define R_PPC_PLT16_HA          31
 562 #define R_PPC_SDAREL16          32
 563 #define R_PPC_SECTOFF           33
 564 #define R_PPC_SECTOFF_LO        34
 565 #define R_PPC_SECTOFF_HI        35
 566 #define R_PPC_SECTOFF_HA        36
 567 /* Keep this the last entry.  */
 568 #define R_PPC_NUM               37
 569
 570 /* The remaining relocs are from the Embedded ELF ABI, and are not
 571    in the SVR4 ELF ABI.  */
 572 #define R_PPC_EMB_NADDR32       101
 573 #define R_PPC_EMB_NADDR16       102
 574 #define R_PPC_EMB_NADDR16_LO    103
 575 #define R_PPC_EMB_NADDR16_HI    104
 576 #define R_PPC_EMB_NADDR16_HA    105
 577 #define R_PPC_EMB_SDAI16        106
 578 #define R_PPC_EMB_SDA2I16       107
 579 #define R_PPC_EMB_SDA2REL       108
 580 #define R_PPC_EMB_SDA21         109     /* 16 bit offset in SDA */
 581 #define R_PPC_EMB_MRKREF        110
 582 #define R_PPC_EMB_RELSEC16      111
 583 #define R_PPC_EMB_RELST_LO      112
 584 #define R_PPC_EMB_RELST_HI      113
 585 #define R_PPC_EMB_RELST_HA      114
 586 #define R_PPC_EMB_BIT_FLD       115
 587 #define R_PPC_EMB_RELSDA        116     /* 16 bit relative offset in SDA */
 588
 589 /* Diab tool relocations.  */
 590 #define R_PPC_DIAB_SDA21_LO     180     /* like EMB_SDA21, but lower 16 bit */
 591 #define R_PPC_DIAB_SDA21_HI     181     /* like EMB_SDA21, but high 16 bit */
 592 #define R_PPC_DIAB_SDA21_HA     182     /* like EMB_SDA21, adjusted high 16 */
 593 #define R_PPC_DIAB_RELSDA_LO    183     /* like EMB_RELSDA, but lower 16 bit */
 594 #define R_PPC_DIAB_RELSDA_HI    184     /* like EMB_RELSDA, but high 16 bit */
 595 #define R_PPC_DIAB_RELSDA_HA    185     /* like EMB_RELSDA, adjusted high 16 */
 596
 597 /* This is a phony reloc to handle any old fashioned TOC16 references
 598    that may still be in object files.  */
 599 #define R_PPC_TOC16             255
 600
 601 #endif /* _ELF_H */