com32/include/sys/elfcommon.h

   1 /*
   2  * sys/elfcommon.h
   3  */
   4
   5 #ifndef _SYS_ELFCOMMON_H
   6 #define _SYS_ELFCOMMON_H
   7
   8 #include <stdint.h>
   9
  10 /* Segment types */
  11 #define PT_NULL         0
  12 #define PT_LOAD         1
  13 #define PT_DYNAMIC      2
  14 #define PT_INTERP       3
  15 #define PT_NOTE         4
  16 #define PT_SHLIB        5
  17 #define PT_PHDR         6
  18 #define PT_LOOS         0x60000000
  19 #define PT_HIOS         0x6fffffff
  20 #define PT_LOPROC       0x70000000
  21 #define PT_HIPROC       0x7fffffff
  22 #define PT_GNU_EH_FRAME 0x6474e550      /* Extension, eh? */
  23
  24 /* ELF file types */
  25 #define ET_NONE         0
  26 #define ET_REL          1
  27 #define ET_EXEC         2
  28 #define ET_DYN          3
  29 #define ET_CORE         4
  30 #define ET_LOPROC       0xff00
  31 #define ET_HIPROC       0xffff
  32
  33 /* ELF machine types */
  34 #define EM_NONE         0
  35 #define EM_M32          1
  36 #define EM_SPARC        2
  37 #define EM_386          3
  38 #define EM_68K          4
  39 #define EM_88K          5
  40 #define EM_486          6       /* Not used in Linux at least */
  41 #define EM_860          7
  42 #define EM_MIPS         8       /* R3k, bigendian(?) */
  43 #define EM_MIPS_RS4_BE  10      /* R4k BE */
  44 #define EM_PARISC       15
  45 #define EM_SPARC32PLUS  18
  46 #define EM_PPC          20
  47 #define EM_PPC64        21
  48 #define EM_S390         22
  49 #define EM_SH           42
  50 #define EM_SPARCV9      43      /* v9 = SPARC64 */
  51 #define EM_H8_300H      47
  52 #define EM_H8S          48
  53 #define EM_IA_64        50      /* Itanic */
  54 #define EM_X86_64       62
  55 #define EM_CRIS         76
  56 #define EM_V850         87
  57 #define EM_ALPHA        0x9026  /* Interrim Alpha that stuck around */
  58 #define EM_CYGNUS_V850  0x9080  /* Old v850 ID used by Cygnus */
  59 #define EM_S390_OLD     0xA390  /* Obsolete interrim value for S/390 */
  60
  61 /* Dynamic type values */
  62 #define DT_NULL         0               /* Marks end of dynamic section */
  63 #define DT_NEEDED       1               /* Name of needed library */
  64 #define DT_PLTRELSZ     2               /* Size in bytes of PLT relocs */
  65 #define DT_PLTGOT       3               /* Processor defined value */
  66 #define DT_HASH         4               /* Address of symbol hash table */
  67 #define DT_STRTAB       5               /* Address of string table */
  68 #define DT_SYMTAB       6               /* Address of symbol table */
  69 #define DT_RELA         7               /* Address of Rela relocs */
  70 #define DT_RELASZ       8               /* Total size of Rela relocs */
  71 #define DT_RELAENT      9               /* Size of one Rela reloc */
  72 #define DT_STRSZ        10              /* Size of string table */
  73 #define DT_SYMENT       11              /* Size of one symbol table entry */
  74 #define DT_INIT         12              /* Address of init function */
  75 #define DT_FINI         13              /* Address of termination function */
  76 #define DT_SONAME       14              /* Name of shared object */
  77 #define DT_RPATH        15              /* Library search path (deprecated) */
  78 #define DT_SYMBOLIC     16              /* Start symbol search here */
  79 #define DT_REL          17              /* Address of Rel relocs */
  80 #define DT_RELSZ        18              /* Total size of Rel relocs */
  81 #define DT_RELENT       19              /* Size of one Rel reloc */
  82 #define DT_PLTREL       20              /* Type of reloc in PLT */
  83 #define DT_DEBUG        21              /* For debugging; unspecified */
  84 #define DT_TEXTREL      22              /* Reloc might modify .text */
  85 #define DT_JMPREL       23              /* Address of PLT relocs */
  86 #define DT_BIND_NOW     24              /* Process relocations of object */
  87 #define DT_INIT_ARRAY   25              /* Array with addresses of init fct */
  88 #define DT_FINI_ARRAY   26              /* Array with addresses of fini fct */
  89 #define DT_INIT_ARRAYSZ 27              /* Size in bytes of DT_INIT_ARRAY */
  90 #define DT_FINI_ARRAYSZ 28              /* Size in bytes of DT_FINI_ARRAY */
  91 #define DT_RUNPATH      29              /* Library search path */
  92 #define DT_FLAGS        30              /* Flags for the object being loaded */
  93 #define DT_ENCODING     32              /* Start of encoded range */
  94 #define DT_PREINIT_ARRAY 32             /* Array with addresses of preinit fct*/
  95 #define DT_PREINIT_ARRAYSZ 33           /* size in bytes of DT_PREINIT_ARRAY */
  96 #define DT_NUM          34              /* Number used */
  97 #define DT_LOOS         0x6000000d      /* Start of OS-specific */
  98 #define DT_HIOS         0x6ffff000      /* End of OS-specific */
  99 #define DT_LOPROC       0x70000000      /* Start of processor-specific */
 100 #define DT_HIPROC       0x7fffffff      /* End of processor-specific */
 101
 102 #define DT_VALRNGLO     0x6ffffd00
 103 #define DT_GNU_PRELINKED 0x6ffffdf5     /* Prelinking timestamp */
 104 #define DT_GNU_CONFLICTSZ 0x6ffffdf6    /* Size of conflict section */
 105 #define DT_GNU_LIBLISTSZ 0x6ffffdf7     /* Size of library list */
 106 #define DT_CHECKSUM     0x6ffffdf8
 107 #define DT_PLTPADSZ     0x6ffffdf9
 108 #define DT_MOVEENT      0x6ffffdfa
 109 #define DT_MOVESZ       0x6ffffdfb
 110 #define DT_FEATURE_1    0x6ffffdfc      /* Feature selection (DTF_*).  */
 111 #define DT_POSFLAG_1    0x6ffffdfd      /* Flags for DT_* entries, effecting
 112                                            the following DT_* entry.  */
 113 #define DT_SYMINSZ      0x6ffffdfe      /* Size of syminfo table (in bytes) */
 114 #define DT_SYMINENT     0x6ffffdff      /* Entry size of syminfo */
 115 #define DT_VALRNGHI     0x6ffffdff
 116 #define DT_VALTAGIDX(tag)       (DT_VALRNGHI - (tag))   /* Reverse order! */
 117 #define DT_VALNUM 12
 118
 119 /* DT_* entries which fall between DT_ADDRRNGHI & DT_ADDRRNGLO use the
 120    Dyn.d_un.d_ptr field of the Elf*_Dyn structure.
 121
 122    If any adjustment is made to the ELF object after it has been
 123    built these entries will need to be adjusted.  */
 124 #define DT_ADDRRNGLO    0x6ffffe00
 125 #define DT_GNU_HASH     0x6ffffef5      /* GNU-style hash table.  */
 126 #define DT_TLSDESC_PLT  0x6ffffef6
 127 #define DT_TLSDESC_GOT  0x6ffffef7
 128 #define DT_GNU_CONFLICT 0x6ffffef8      /* Start of conflict section */
 129 #define DT_GNU_LIBLIST  0x6ffffef9      /* Library list */
 130 #define DT_CONFIG       0x6ffffefa      /* Configuration information.  */
 131 #define DT_DEPAUDIT     0x6ffffefb      /* Dependency auditing.  */
 132 #define DT_AUDIT        0x6ffffefc      /* Object auditing.  */
 133 #define DT_PLTPAD       0x6ffffefd      /* PLT padding.  */
 134 #define DT_MOVETAB      0x6ffffefe      /* Move table.  */
 135 #define DT_SYMINFO      0x6ffffeff      /* Syminfo table.  */
 136 #define DT_ADDRRNGHI    0x6ffffeff
 137 #define DT_ADDRTAGIDX(tag)      (DT_ADDRRNGHI - (tag))  /* Reverse order! */
 138 #define DT_ADDRNUM 11
 139
 140 /* The versioning entry types.  The next are defined as part of the
 141    GNU extension.  */
 142 #define DT_VERSYM       0x6ffffff0
 143
 144 #define DT_RELACOUNT    0x6ffffff9
 145 #define DT_RELCOUNT     0x6ffffffa
 146
 147 /* These were chosen by Sun.  */
 148 #define DT_FLAGS_1      0x6ffffffb      /* State flags, see DF_1_* below.  */
 149 #define DT_VERDEF       0x6ffffffc      /* Address of version definition
 150                                            table */
 151 #define DT_VERDEFNUM    0x6ffffffd      /* Number of version definitions */
 152 #define DT_VERNEED      0x6ffffffe      /* Address of table with needed
 153                                            versions */
 154 #define DT_VERNEEDNUM   0x6fffffff      /* Number of needed versions */
 155 #define DT_VERSIONTAGIDX(tag)   (DT_VERNEEDNUM - (tag)) /* Reverse order! */
 156 #define DT_VERSIONTAGNUM 16
 157
 158 /* Sun added these machine-independent extensions in the "processor-specific"
 159    range.  Be compatible.  */
 160 #define DT_AUXILIARY    0x7ffffffd      /* Shared object to load before self */
 161 #define DT_FILTER       0x7fffffff      /* Shared object to get values from */
 162 #define DT_EXTRATAGIDX(tag)     ((Elf32_Word)-((Elf32_Sword) (tag) <<1>>1)-1)
 163 #define DT_EXTRANUM     3
 164
 165 /* Auxilliary table entries */
 166 #define AT_NULL         0       /* end of vector */
 167 #define AT_IGNORE       1       /* entry should be ignored */
 168 #define AT_EXECFD       2       /* file descriptor of program */
 169 #define AT_PHDR         3       /* program headers for program */
 170 #define AT_PHENT        4       /* size of program header entry */
 171 #define AT_PHNUM        5       /* number of program headers */
 172 #define AT_PAGESZ       6       /* system page size */
 173 #define AT_BASE         7       /* base address of interpreter */
 174 #define AT_FLAGS        8       /* flags */
 175 #define AT_ENTRY        9       /* entry point of program */
 176 #define AT_NOTELF       10      /* program is not ELF */
 177 #define AT_UID          11      /* real uid */
 178 #define AT_EUID         12      /* effective uid */
 179 #define AT_GID          13      /* real gid */
 180 #define AT_EGID         14      /* effective gid */
 181 #define AT_PLATFORM     15      /* string identifying CPU for optimizations */
 182 #define AT_HWCAP        16      /* arch dependent hints at CPU capabilities */
 183 #define AT_CLKTCK       17      /* frequency at which times() increments */
 184 /* 18..22 = ? */
 185 #define AT_SECURE       23      /* secure mode boolean */
 186
 187 /* Program header permission flags */
 188 #define PF_X            0x1
 189 #define PF_W            0x2
 190 #define PF_R            0x4
 191
 192 /* Section header types */
 193 #define SHT_NULL        0
 194 #define SHT_PROGBITS    1
 195 #define SHT_SYMTAB      2
 196 #define SHT_STRTAB      3
 197 #define SHT_RELA        4
 198 #define SHT_HASH        5
 199 #define SHT_DYNAMIC     6
 200 #define SHT_NOTE        7
 201 #define SHT_NOBITS      8
 202 #define SHT_REL         9
 203 #define SHT_SHLIB       10
 204 #define SHT_DYNSYM      11
 205 #define SHT_NUM         12
 206 #define SHT_LOPROC      0x70000000
 207 #define SHT_HIPROC      0x7fffffff
 208 #define SHT_LOUSER      0x80000000
 209 #define SHT_HIUSER      0xffffffff
 210
 211 /* Section header flags */
 212 #define SHF_WRITE       0x1
 213 #define SHF_ALLOC       0x2
 214 #define SHF_EXECINSTR   0x4
 215 #define SHF_MASKPROC    0xf0000000
 216
 217 /* Special section numbers */
 218 #define SHN_UNDEF       0
 219 #define SHN_LORESERVE   0xff00
 220 #define SHN_LOPROC      0xff00
 221 #define SHN_HIPROC      0xff1f
 222 #define SHN_ABS         0xfff1
 223 #define SHN_COMMON      0xfff2
 224 #define SHN_HIRESERVE   0xffff
 225
 226 /* Symbol table definitions */
 227
 228 /* How to extract and insert information held in the st_info field.  */
 229
 230 #define ELF32_ST_BIND(val)              (((unsigned char) (val)) >> 4)
 231 #define ELF32_ST_TYPE(val)              ((val) & 0xf)
 232 #define ELF32_ST_INFO(bind, type)       (((bind) << 4) + ((type) & 0xf))
 233
 234 /* Both Elf32_Sym and Elf64_Sym use the same one-byte st_info field.  */
 235 #define ELF64_ST_BIND(val)              ELF32_ST_BIND (val)
 236 #define ELF64_ST_TYPE(val)              ELF32_ST_TYPE (val)
 237 #define ELF64_ST_INFO(bind, type)       ELF32_ST_INFO ((bind), (type))
 238
 239 /* Legal values for ST_BIND subfield of st_info (symbol binding).  */
 240
 241 #define STB_LOCAL       0               /* Local symbol */
 242 #define STB_GLOBAL      1               /* Global symbol */
 243 #define STB_WEAK        2               /* Weak symbol */
 244 #define STB_NUM         3               /* Number of defined types.  */
 245 #define STB_LOOS        10              /* Start of OS-specific */
 246 #define STB_HIOS        12              /* End of OS-specific */
 247 #define STB_LOPROC      13              /* Start of processor-specific */
 248 #define STB_HIPROC      15              /* End of processor-specific */
 249
 250 /* Legal values for ST_TYPE subfield of st_info (symbol type).  */
 251
 252 #define STT_NOTYPE      0               /* Symbol type is unspecified */
 253 #define STT_OBJECT      1               /* Symbol is a data object */
 254 #define STT_FUNC        2               /* Symbol is a code object */
 255 #define STT_SECTION     3               /* Symbol associated with a section */
 256 #define STT_FILE        4               /* Symbol's name is file name */
 257 #define STT_COMMON      5               /* Symbol is a common data object */
 258 #define STT_TLS         6               /* Symbol is thread-local data object*/
 259 #define STT_NUM         7               /* Number of defined types.  */
 260 #define STT_LOOS        10              /* Start of OS-specific */
 261 #define STT_HIOS        12              /* End of OS-specific */
 262 #define STT_LOPROC      13              /* Start of processor-specific */
 263 #define STT_HIPROC      15              /* End of processor-specific */
 264
 265
 266 /* Symbol table indices are found in the hash buckets and chain table
 267    of a symbol hash table section.  This special index value indicates
 268    the end of a chain, meaning no further symbols are found in that bucket.  */
 269
 270 #define STN_UNDEF       0               /* End of a chain.  */
 271
 272 /* Lenght of magic at the start of a file */
 273 #define EI_NIDENT       16
 274
 275 /* Magic number constants... */
 276 #define EI_MAG0         0       /* e_ident[] indexes */
 277 #define EI_MAG1         1
 278 #define EI_MAG2         2
 279 #define EI_MAG3         3
 280 #define EI_CLASS        4
 281 #define EI_DATA         5
 282 #define EI_VERSION      6
 283 #define EI_OSABI        7
 284 #define EI_PAD          8
 285
 286 #define ELFMAG0         0x7f    /* EI_MAG */
 287 #define ELFMAG1         'E'
 288 #define ELFMAG2         'L'
 289 #define ELFMAG3         'F'
 290 #define ELFMAG          "\177ELF"
 291 #define SELFMAG         4
 292
 293 #define ELFCLASSNONE    0       /* EI_CLASS */
 294 #define ELFCLASS32      1
 295 #define ELFCLASS64      2
 296 #define ELFCLASSNUM     3
 297
 298 #define ELFDATANONE     0       /* e_ident[EI_DATA] */
 299 #define ELFDATA2LSB     1
 300 #define ELFDATA2MSB     2
 301
 302 #define EV_NONE         0       /* e_version, EI_VERSION */
 303 #define EV_CURRENT      1
 304 #define EV_NUM          2
 305
 306 #define ELFOSABI_NONE   0
 307 #define ELFOSABI_LINUX  3
 308
 309 /* Intel 80386 specific definitions.  */
 310
 311 /* i386 relocs.  */
 312
 313 #define R_386_NONE         0            /* No reloc */
 314 #define R_386_32           1            /* Direct 32 bit  */
 315 #define R_386_PC32         2            /* PC relative 32 bit */
 316 #define R_386_GOT32        3            /* 32 bit GOT entry */
 317 #define R_386_PLT32        4            /* 32 bit PLT address */
 318 #define R_386_COPY         5            /* Copy symbol at runtime */
 319 #define R_386_GLOB_DAT     6            /* Create GOT entry */
 320 #define R_386_JMP_SLOT     7            /* Create PLT entry */
 321 #define R_386_RELATIVE     8            /* Adjust by program base */
 322 #define R_386_GOTOFF       9            /* 32 bit offset to GOT */
 323 #define R_386_GOTPC        10           /* 32 bit PC relative offset to GOT */
 324 #define R_386_32PLT        11
 325 #define R_386_TLS_TPOFF    14           /* Offset in static TLS block */
 326 #define R_386_TLS_IE       15           /* Address of GOT entry for static TLS
 327                                            block offset */
 328 #define R_386_TLS_GOTIE    16           /* GOT entry for static TLS block
 329                                            offset */
 330 #define R_386_TLS_LE       17           /* Offset relative to static TLS
 331                                            block */
 332 #define R_386_TLS_GD       18           /* Direct 32 bit for GNU version of
 333                                            general dynamic thread local data */
 334 #define R_386_TLS_LDM      19           /* Direct 32 bit for GNU version of
 335                                            local dynamic thread local data
 336                                            in LE code */
 337 #define R_386_16           20
 338 #define R_386_PC16         21
 339 #define R_386_8            22
 340 #define R_386_PC8          23
 341 #define R_386_TLS_GD_32    24           /* Direct 32 bit for general dynamic
 342                                            thread local data */
 343 #define R_386_TLS_GD_PUSH  25           /* Tag for pushl in GD TLS code */
 344 #define R_386_TLS_GD_CALL  26           /* Relocation for call to
 345                                            __tls_get_addr() */
 346 #define R_386_TLS_GD_POP   27           /* Tag for popl in GD TLS code */
 347 #define R_386_TLS_LDM_32   28           /* Direct 32 bit for local dynamic
 348                                            thread local data in LE code */
 349 #define R_386_TLS_LDM_PUSH 29           /* Tag for pushl in LDM TLS code */
 350 #define R_386_TLS_LDM_CALL 30           /* Relocation for call to
 351                                            __tls_get_addr() in LDM code */
 352 #define R_386_TLS_LDM_POP  31           /* Tag for popl in LDM TLS code */
 353 #define R_386_TLS_LDO_32   32           /* Offset relative to TLS block */
 354 #define R_386_TLS_IE_32    33           /* GOT entry for negated static TLS
 355                                            block offset */
 356 #define R_386_TLS_LE_32    34           /* Negated offset relative to static
 357                                            TLS block */
 358 #define R_386_TLS_DTPMOD32 35           /* ID of module containing symbol */
 359 #define R_386_TLS_DTPOFF32 36           /* Offset in TLS block */
 360 #define R_386_TLS_TPOFF32  37           /* Negated offset in static TLS block */
 361 /* Keep this the last entry.  */
 362 #define R_386_NUM          38
 363
 364 /* AMD x86-64 relocations.  */
 365 #define R_X86_64_NONE           0       /* No reloc */
 366 #define R_X86_64_64             1       /* Direct 64 bit  */
 367 #define R_X86_64_PC32           2       /* PC relative 32 bit signed */
 368 #define R_X86_64_GOT32          3       /* 32 bit GOT entry */
 369 #define R_X86_64_PLT32          4       /* 32 bit PLT address */
 370 #define R_X86_64_COPY           5       /* Copy symbol at runtime */
 371 #define R_X86_64_GLOB_DAT       6       /* Create GOT entry */
 372 #define R_X86_64_JUMP_SLOT      7       /* Create PLT entry */
 373 #define R_X86_64_RELATIVE       8       /* Adjust by program base */
 374 #define R_X86_64_GOTPCREL       9       /* 32 bit signed PC relative
 375                                            offset to GOT */
 376 #define R_X86_64_32             10      /* Direct 32 bit zero extended */
 377 #define R_X86_64_32S            11      /* Direct 32 bit sign extended */
 378 #define R_X86_64_16             12      /* Direct 16 bit zero extended */
 379 #define R_X86_64_PC16           13      /* 16 bit sign extended pc relative */
 380 #define R_X86_64_8              14      /* Direct 8 bit sign extended  */
 381 #define R_X86_64_PC8            15      /* 8 bit sign extended pc relative */
 382 #define R_X86_64_DTPMOD64       16      /* ID of module containing symbol */
 383 #define R_X86_64_DTPOFF64       17      /* Offset in module's TLS block */
 384 #define R_X86_64_TPOFF64        18      /* Offset in initial TLS block */
 385 #define R_X86_64_TLSGD          19      /* 32 bit signed PC relative offset
 386                                            to two GOT entries for GD symbol */
 387 #define R_X86_64_TLSLD          20      /* 32 bit signed PC relative offset
 388                                            to two GOT entries for LD symbol */
 389 #define R_X86_64_DTPOFF32       21      /* Offset in TLS block */
 390 #define R_X86_64_GOTTPOFF       22      /* 32 bit signed PC relative offset
 391                                            to GOT entry for IE symbol */
 392 #define R_X86_64_TPOFF32        23      /* Offset in initial TLS block */
 393 #define R_X86_64_PC64           24      /* PC relative 64 bit */
 394 #define R_X86_64_GOTOFF64       25      /* 64 bit offset to GOT */
 395 #define R_X86_64_GOTPC32        26      /* 32 bit signed pc relative
 396                                            offset to GOT */
 397 #define R_X86_64_GOT64          27      /* 64-bit GOT entry offset */
 398 #define R_X86_64_GOTPCREL64     28      /* 64-bit PC relative offset
 399                                            to GOT entry */
 400 #define R_X86_64_GOTPC64        29      /* 64-bit PC relative offset to GOT */
 401 #define R_X86_64_GOTPLT64       30      /* like GOT64, says PLT entry needed */
 402 #define R_X86_64_PLTOFF64       31      /* 64-bit GOT relative offset
 403                                            to PLT entry */
 404 #define R_X86_64_SIZE32         32      /* Size of symbol plus 32-bit addend */
 405 #define R_X86_64_SIZE64         33      /* Size of symbol plus 64-bit addend */
 406 #define R_X86_64_GOTPC32_TLSDESC 34     /* GOT offset for TLS descriptor.  */
 407 #define R_X86_64_TLSDESC_CALL   35      /* Marker for call through TLS
 408                                            descriptor.  */
 409 #define R_X86_64_TLSDESC        36      /* TLS descriptor.  */
 410 #define R_X86_64_IRELATIVE      37      /* Adjust indirectly by program base */
 411
 412 #define R_X86_64_NUM            38
 413
 414 #endif                          /* _SYS_ELFCOMMON_H */