| 1 | /* ELF support for BFD. |
| 2 | Copyright (C) 1991,92,93,94,95,96,97,98,1999 Free Software Foundation, Inc. |
| 3 | |
| 4 | Written by Fred Fish @ Cygnus Support, from information published |
| 5 | in "UNIX System V Release 4, Programmers Guide: ANSI C and |
| 6 | Programming Support Tools". |
| 7 | |
| 8 | This file is part of BFD, the Binary File Descriptor library. |
| 9 | |
| 10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation; either version 2 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with this program; if not, write to the Free Software |
| 22 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 23 | |
| 24 | |
| 25 | /* This file is part of ELF support for BFD, and contains the portions |
| 26 | that are common to both the internal and external representations. |
| 27 | For example, ELFMAG0 is the byte 0x7F in both the internal (in-memory) |
| 28 | and external (in-file) representations. */ |
| 29 | |
| 30 | #ifndef _ELF_COMMON_H |
| 31 | #define _ELF_COMMON_H |
| 32 | |
| 33 | /* Fields in e_ident[] */ |
| 34 | |
| 35 | #define EI_MAG0 0 /* File identification byte 0 index */ |
| 36 | #define ELFMAG0 0x7F /* Magic number byte 0 */ |
| 37 | |
| 38 | #define EI_MAG1 1 /* File identification byte 1 index */ |
| 39 | #define ELFMAG1 'E' /* Magic number byte 1 */ |
| 40 | |
| 41 | #define EI_MAG2 2 /* File identification byte 2 index */ |
| 42 | #define ELFMAG2 'L' /* Magic number byte 2 */ |
| 43 | |
| 44 | #define EI_MAG3 3 /* File identification byte 3 index */ |
| 45 | #define ELFMAG3 'F' /* Magic number byte 3 */ |
| 46 | |
| 47 | #define EI_CLASS 4 /* File class */ |
| 48 | #define ELFCLASSNONE 0 /* Invalid class */ |
| 49 | #define ELFCLASS32 1 /* 32-bit objects */ |
| 50 | #define ELFCLASS64 2 /* 64-bit objects */ |
| 51 | |
| 52 | #define EI_DATA 5 /* Data encoding */ |
| 53 | #define ELFDATANONE 0 /* Invalid data encoding */ |
| 54 | #define ELFDATA2LSB 1 /* 2's complement, little endian */ |
| 55 | #define ELFDATA2MSB 2 /* 2's complement, big endian */ |
| 56 | |
| 57 | #define EI_VERSION 6 /* File version */ |
| 58 | |
| 59 | #define EI_OSABI 7 /* Operating System/ABI indication */ |
| 60 | #define ELFOSABI_SYSV 0 /* UNIX System V ABI */ |
| 61 | #define ELFOSABI_HPUX 1 /* HP-UX operating system */ |
| 62 | #define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */ |
| 63 | #define ELFOSABI_ARM 97 /* ARM */ |
| 64 | |
| 65 | #define EI_ABIVERSION 8 /* ABI version */ |
| 66 | |
| 67 | #define EI_PAD 9 /* Start of padding bytes */ |
| 68 | |
| 69 | |
| 70 | /* Values for e_type, which identifies the object file type */ |
| 71 | |
| 72 | #define ET_NONE 0 /* No file type */ |
| 73 | #define ET_REL 1 /* Relocatable file */ |
| 74 | #define ET_EXEC 2 /* Executable file */ |
| 75 | #define ET_DYN 3 /* Shared object file */ |
| 76 | #define ET_CORE 4 /* Core file */ |
| 77 | #define ET_LOOS 0xFE00 /* Operating system-specific */ |
| 78 | #define ET_HIOS 0xFEFF /* Operating system-specific */ |
| 79 | #define ET_LOPROC 0xFF00 /* Processor-specific */ |
| 80 | #define ET_HIPROC 0xFFFF /* Processor-specific */ |
| 81 | |
| 82 | /* Values for e_machine, which identifies the architecture */ |
| 83 | |
| 84 | #define EM_NONE 0 /* No machine */ |
| 85 | #define EM_M32 1 /* AT&T WE 32100 */ |
| 86 | #define EM_SPARC 2 /* SUN SPARC */ |
| 87 | #define EM_386 3 /* Intel 80386 */ |
| 88 | #define EM_68K 4 /* Motorola m68k family */ |
| 89 | #define EM_88K 5 /* Motorola m88k family */ |
| 90 | #define EM_486 6 /* Intel 80486 */ |
| 91 | #define EM_860 7 /* Intel 80860 */ |
| 92 | #define EM_MIPS 8 /* MIPS R3000 (officially, big-endian only) */ |
| 93 | #define EM_S370 9 /* Amdahl */ |
| 94 | #define EM_MIPS_RS4_BE 10 /* MIPS R4000 big-endian */ |
| 95 | |
| 96 | #define EM_PARISC 15 /* HPPA */ |
| 97 | #define EM_VPP550 17 /* Fujitsu VPP500 */ |
| 98 | #define EM_SPARC32PLUS 18 /* Sun's "v8plus" */ |
| 99 | #define EM_960 19 /* Intel 80960 */ |
| 100 | #define EM_PPC 20 /* PowerPC */ |
| 101 | #define EM_PPC64 21 /* 64-bit PowerPC */ |
| 102 | |
| 103 | #define EM_V800 36 /* NEC V800 series */ |
| 104 | #define EM_FR20 37 /* Fujitsu FR20 */ |
| 105 | #define EM_RH32 38 /* TRW RH32 */ |
| 106 | #define EM_MCORE 39 /* Motorolla MCore */ /* May also be taken by Fujitsu MMA */ |
| 107 | #define EM_ARM 40 /* ARM */ |
| 108 | #define EM_OLD_ALPHA 41 /* Digital Alpha */ |
| 109 | #define EM_SH 42 /* Hitachi SH */ |
| 110 | #define EM_SPARCV9 43 /* SPARC v9 64-bit */ |
| 111 | #define EM_TRICORE 44 /* Siemens Tricore embedded processor */ |
| 112 | #define EM_ARC 45 /* Argonaut RISC Core, Argonaut Technologies Inc. */ |
| 113 | #define EM_H8_300 46 /* Hitachi H8/300 */ |
| 114 | #define EM_H8_300H 47 /* Hitachi H8/300H */ |
| 115 | #define EM_H8S 48 /* Hitachi H8S */ |
| 116 | #define EM_H8_500 49 /* Hitachi H8/500 */ |
| 117 | #define EM_IA_64 50 /* Intel MercedTM Processor */ |
| 118 | #define EM_MIPS_X 51 /* Stanford MIPS-X */ |
| 119 | #define EM_COLDFIRE 52 /* Motorola Coldfire */ |
| 120 | #define EM_68HC12 53 /* Motorola M68HC12 */ |
| 121 | |
| 122 | /* If it is necessary to assign new unofficial EM_* values, please pick large |
| 123 | random numbers (0x8523, 0xa7f2, etc.) to minimize the chances of collision |
| 124 | with official or non-GNU unofficial values. |
| 125 | |
| 126 | NOTE: Do not just increment the most recent number by one. |
| 127 | Somebody else somewhere will do exactly the same thing, and you |
| 128 | will have a collision. Instead, pick a random number. */ |
| 129 | |
| 130 | /* Cygnus PowerPC ELF backend. Written in the absence of an ABI. */ |
| 131 | #define EM_CYGNUS_POWERPC 0x9025 |
| 132 | |
| 133 | /* Old version of Sparc v9, from before the ABI; this should be |
| 134 | removed shortly. */ |
| 135 | #define EM_OLD_SPARCV9 11 |
| 136 | |
| 137 | /* Old version of PowerPC, this should be removed shortly. */ |
| 138 | #define EM_PPC_OLD 17 |
| 139 | |
| 140 | /* Cygnus ARC ELF backend. Written in the absence of an ABI. */ |
| 141 | #define EM_CYGNUS_ARC 0x9040 |
| 142 | |
| 143 | /* Cygnus M32R ELF backend. Written in the absence of an ABI. */ |
| 144 | #define EM_CYGNUS_M32R 0x9041 |
| 145 | |
| 146 | /* Alpha backend magic number. Written in the absence of an ABI. */ |
| 147 | #define EM_ALPHA 0x9026 |
| 148 | |
| 149 | /* D10V backend magic number. Written in the absence of an ABI. */ |
| 150 | #define EM_CYGNUS_D10V 0x7650 |
| 151 | |
| 152 | /* D30V backend magic number. Written in the absence of an ABI. */ |
| 153 | #define EM_CYGNUS_D30V 0x7676 |
| 154 | |
| 155 | /* V850 backend magic number. Written in the absense of an ABI. */ |
| 156 | #define EM_CYGNUS_V850 0x9080 |
| 157 | |
| 158 | /* mn10200 and mn10300 backend magic numbers. |
| 159 | Written in the absense of an ABI. */ |
| 160 | #define EM_CYGNUS_MN10200 0xdead |
| 161 | #define EM_CYGNUS_MN10300 0xbeef |
| 162 | |
| 163 | /* FR30 magic number - no EABI available. */ |
| 164 | #define EM_CYGNUS_FR30 0x3330 |
| 165 | |
| 166 | /* See the above comment before you add a new EM_* value here. */ |
| 167 | |
| 168 | /* Values for e_version */ |
| 169 | |
| 170 | #define EV_NONE 0 /* Invalid ELF version */ |
| 171 | #define EV_CURRENT 1 /* Current version */ |
| 172 | |
| 173 | /* Values for program header, p_type field */ |
| 174 | |
| 175 | #define PT_NULL 0 /* Program header table entry unused */ |
| 176 | #define PT_LOAD 1 /* Loadable program segment */ |
| 177 | #define PT_DYNAMIC 2 /* Dynamic linking information */ |
| 178 | #define PT_INTERP 3 /* Program interpreter */ |
| 179 | #define PT_NOTE 4 /* Auxiliary information */ |
| 180 | #define PT_SHLIB 5 /* Reserved, unspecified semantics */ |
| 181 | #define PT_PHDR 6 /* Entry for header table itself */ |
| 182 | #define PT_LOOS 0x60000000 /* OS-specific */ |
| 183 | #define PT_HIOS 0x6fffffff /* OS-specific */ |
| 184 | #define PT_LOPROC 0x70000000 /* Processor-specific */ |
| 185 | #define PT_HIPROC 0x7FFFFFFF /* Processor-specific */ |
| 186 | |
| 187 | /* Program segment permissions, in program header p_flags field */ |
| 188 | |
| 189 | #define PF_X (1 << 0) /* Segment is executable */ |
| 190 | #define PF_W (1 << 1) /* Segment is writable */ |
| 191 | #define PF_R (1 << 2) /* Segment is readable */ |
| 192 | #define PF_MASKOS 0x0F000000 /* OS-specific reserved bits */ |
| 193 | #define PF_MASKPROC 0xF0000000 /* Processor-specific reserved bits */ |
| 194 | |
| 195 | /* Values for section header, sh_type field */ |
| 196 | |
| 197 | #define SHT_NULL 0 /* Section header table entry unused */ |
| 198 | #define SHT_PROGBITS 1 /* Program specific (private) data */ |
| 199 | #define SHT_SYMTAB 2 /* Link editing symbol table */ |
| 200 | #define SHT_STRTAB 3 /* A string table */ |
| 201 | #define SHT_RELA 4 /* Relocation entries with addends */ |
| 202 | #define SHT_HASH 5 /* A symbol hash table */ |
| 203 | #define SHT_DYNAMIC 6 /* Information for dynamic linking */ |
| 204 | #define SHT_NOTE 7 /* Information that marks file */ |
| 205 | #define SHT_NOBITS 8 /* Section occupies no space in file */ |
| 206 | #define SHT_REL 9 /* Relocation entries, no addends */ |
| 207 | #define SHT_SHLIB 10 /* Reserved, unspecified semantics */ |
| 208 | #define SHT_DYNSYM 11 /* Dynamic linking symbol table */ |
| 209 | |
| 210 | #define SHT_LOOS 0x60000000 /* Operating system specific semantics, lo */ |
| 211 | #define SHT_HIOS 0x6fffffff /* Operating system specific semantics, hi */ |
| 212 | |
| 213 | /* The next three section types are defined by Solaris, and are named |
| 214 | SHT_SUNW*. We use them in GNU code, so we also define SHT_GNU* |
| 215 | versions. */ |
| 216 | #define SHT_SUNW_verdef 0x6ffffffd /* Versions defined by file */ |
| 217 | #define SHT_SUNW_verneed 0x6ffffffe /* Versions needed by file */ |
| 218 | #define SHT_SUNW_versym 0x6fffffff /* Symbol versions */ |
| 219 | |
| 220 | #define SHT_GNU_verdef SHT_SUNW_verdef |
| 221 | #define SHT_GNU_verneed SHT_SUNW_verneed |
| 222 | #define SHT_GNU_versym SHT_SUNW_versym |
| 223 | |
| 224 | #define SHT_LOPROC 0x70000000 /* Processor-specific semantics, lo */ |
| 225 | #define SHT_HIPROC 0x7FFFFFFF /* Processor-specific semantics, hi */ |
| 226 | #define SHT_LOUSER 0x80000000 /* Application-specific semantics */ |
| 227 | #define SHT_HIUSER 0x8FFFFFFF /* Application-specific semantics */ |
| 228 | |
| 229 | /* Values for section header, sh_flags field */ |
| 230 | |
| 231 | #define SHF_WRITE (1 << 0) /* Writable data during execution */ |
| 232 | #define SHF_ALLOC (1 << 1) /* Occupies memory during execution */ |
| 233 | #define SHF_EXECINSTR (1 << 2) /* Executable machine instructions */ |
| 234 | #define SHF_MASKOS 0x0F000000 /* OS-specific semantics */ |
| 235 | #define SHF_MASKPROC 0xF0000000 /* Processor-specific semantics */ |
| 236 | |
| 237 | /* Values of note segment descriptor types for core files. */ |
| 238 | |
| 239 | #define NT_PRSTATUS 1 /* Contains copy of prstatus struct */ |
| 240 | #define NT_FPREGSET 2 /* Contains copy of fpregset struct */ |
| 241 | #define NT_PRPSINFO 3 /* Contains copy of prpsinfo struct */ |
| 242 | #define NT_TASKSTRUCT 4 /* Contains copy of task struct */ |
| 243 | |
| 244 | /* Note segments for core files on dir-style procfs systems. */ |
| 245 | |
| 246 | #define NT_PSTATUS 10 /* Has a struct pstatus */ |
| 247 | #define NT_FPREGS 12 /* Has a struct fpregset */ |
| 248 | #define NT_PSINFO 13 /* Has a struct psinfo */ |
| 249 | #define NT_LWPSTATUS 16 /* Has a struct lwpstatus_t */ |
| 250 | #define NT_LWPSINFO 17 /* Has a struct lwpsinfo_t */ |
| 251 | |
| 252 | /* Values of note segment descriptor types for object files. */ |
| 253 | /* (Only for hppa right now. Should this be moved elsewhere?) */ |
| 254 | |
| 255 | #define NT_VERSION 1 /* Contains a version string. */ |
| 256 | |
| 257 | /* These three macros disassemble and assemble a symbol table st_info field, |
| 258 | which contains the symbol binding and symbol type. The STB_ and STT_ |
| 259 | defines identify the binding and type. */ |
| 260 | |
| 261 | #define ELF_ST_BIND(val) (((unsigned int)(val)) >> 4) |
| 262 | #define ELF_ST_TYPE(val) ((val) & 0xF) |
| 263 | #define ELF_ST_INFO(bind,type) (((bind) << 4) + ((type) & 0xF)) |
| 264 | |
| 265 | #define STN_UNDEF 0 /* undefined symbol index */ |
| 266 | |
| 267 | #define STB_LOCAL 0 /* Symbol not visible outside obj */ |
| 268 | #define STB_GLOBAL 1 /* Symbol visible outside obj */ |
| 269 | #define STB_WEAK 2 /* Like globals, lower precedence */ |
| 270 | #define STB_LOOS 10 /* OS-specific semantics */ |
| 271 | #define STB_HIOS 12 /* OS-specific semantics */ |
| 272 | #define STB_LOPROC 13 /* Application-specific semantics */ |
| 273 | #define STB_HIPROC 15 /* Application-specific semantics */ |
| 274 | |
| 275 | #define STT_NOTYPE 0 /* Symbol type is unspecified */ |
| 276 | #define STT_OBJECT 1 /* Symbol is a data object */ |
| 277 | #define STT_FUNC 2 /* Symbol is a code object */ |
| 278 | #define STT_SECTION 3 /* Symbol associated with a section */ |
| 279 | #define STT_FILE 4 /* Symbol gives a file name */ |
| 280 | #define STT_LOOS 10 /* OS-specific semantics */ |
| 281 | #define STT_HIOS 12 /* OS-specific semantics */ |
| 282 | #define STT_LOPROC 13 /* Application-specific semantics */ |
| 283 | #define STT_HIPROC 15 /* Application-specific semantics */ |
| 284 | |
| 285 | /* Special section indices, which may show up in st_shndx fields, among |
| 286 | other places. */ |
| 287 | |
| 288 | #define SHN_UNDEF 0 /* Undefined section reference */ |
| 289 | #define SHN_LORESERVE 0xFF00 /* Begin range of reserved indices */ |
| 290 | #define SHN_LOPROC 0xFF00 /* Begin range of appl-specific */ |
| 291 | #define SHN_HIPROC 0xFF1F /* End range of appl-specific */ |
| 292 | #define SHN_LOOS 0xFF20 /* OS specific semantics, lo */ |
| 293 | #define SHN_HIOS 0xFF3F /* OS specific semantics, hi */ |
| 294 | #define SHN_ABS 0xFFF1 /* Associated symbol is absolute */ |
| 295 | #define SHN_COMMON 0xFFF2 /* Associated symbol is in common */ |
| 296 | #define SHN_HIRESERVE 0xFFFF /* End range of reserved indices */ |
| 297 | |
| 298 | /* relocation info handling macros */ |
| 299 | |
| 300 | #define ELF32_R_SYM(i) ((i) >> 8) |
| 301 | #define ELF32_R_TYPE(i) ((i) & 0xff) |
| 302 | #define ELF32_R_INFO(s,t) (((s) << 8) + ((t) & 0xff)) |
| 303 | |
| 304 | #define ELF64_R_SYM(i) ((i) >> 32) |
| 305 | #define ELF64_R_TYPE(i) ((i) & 0xffffffff) |
| 306 | #define ELF64_R_INFO(s,t) (((bfd_vma) (s) << 32) + (bfd_vma) (t)) |
| 307 | |
| 308 | /* Dynamic section tags */ |
| 309 | |
| 310 | #define DT_NULL 0 |
| 311 | #define DT_NEEDED 1 |
| 312 | #define DT_PLTRELSZ 2 |
| 313 | #define DT_PLTGOT 3 |
| 314 | #define DT_HASH 4 |
| 315 | #define DT_STRTAB 5 |
| 316 | #define DT_SYMTAB 6 |
| 317 | #define DT_RELA 7 |
| 318 | #define DT_RELASZ 8 |
| 319 | #define DT_RELAENT 9 |
| 320 | #define DT_STRSZ 10 |
| 321 | #define DT_SYMENT 11 |
| 322 | #define DT_INIT 12 |
| 323 | #define DT_FINI 13 |
| 324 | #define DT_SONAME 14 |
| 325 | #define DT_RPATH 15 |
| 326 | #define DT_SYMBOLIC 16 |
| 327 | #define DT_REL 17 |
| 328 | #define DT_RELSZ 18 |
| 329 | #define DT_RELENT 19 |
| 330 | #define DT_PLTREL 20 |
| 331 | #define DT_DEBUG 21 |
| 332 | #define DT_TEXTREL 22 |
| 333 | #define DT_JMPREL 23 |
| 334 | #define DT_BIND_NOW 24 |
| 335 | #define DT_INIT_ARRAY 25 |
| 336 | #define DT_FINI_ARRAY 26 |
| 337 | #define DT_INIT_ARRAYSZ 27 |
| 338 | #define DT_FINI_ARRAYSZ 28 |
| 339 | |
| 340 | #define DT_LOOS 0x60000000 |
| 341 | #define DT_HIOS 0x6fffffff |
| 342 | |
| 343 | /* The next four dynamic tags are used on Solaris. We support them |
| 344 | everywhere. */ |
| 345 | #define DT_VALRNGLO 0x6ffffd00 |
| 346 | #define DT_PLTPADSZ 0x6ffffdf9 |
| 347 | #define DT_MOVEENT 0x6ffffdfa |
| 348 | #define DT_MOVESZ 0x6ffffdfb |
| 349 | #define DT_FEATURE_1 0x6ffffdfc |
| 350 | #define DT_POSFLAG_1 0x6ffffdfd |
| 351 | #define DT_SYMINSZ 0x6ffffdfe |
| 352 | #define DT_SYMINENT 0x6ffffdff |
| 353 | #define DT_VALRNGHI 0x6ffffdff |
| 354 | |
| 355 | #define DT_ADDRRNGLO 0x6ffffe00 |
| 356 | #define DT_SYMINFO 0x6ffffeff |
| 357 | #define DT_ADDRRNGHI 0x6ffffeff |
| 358 | |
| 359 | #define DT_RELACOUNT 0x6ffffff9 |
| 360 | #define DT_RELCOUNT 0x6ffffffa |
| 361 | #define DT_FLAGS_1 0x6ffffffb |
| 362 | #define DT_VERDEF 0x6ffffffc |
| 363 | #define DT_VERDEFNUM 0x6ffffffd |
| 364 | #define DT_VERNEED 0x6ffffffe |
| 365 | #define DT_VERNEEDNUM 0x6fffffff |
| 366 | |
| 367 | /* This tag is a GNU extension to the Solaris version scheme. */ |
| 368 | #define DT_VERSYM 0x6ffffff0 |
| 369 | |
| 370 | #define DT_LOPROC 0x70000000 |
| 371 | #define DT_HIPROC 0x7fffffff |
| 372 | |
| 373 | /* These section tags are used on Solaris. We support them |
| 374 | everywhere, and hope they do not conflict. */ |
| 375 | |
| 376 | #define DT_AUXILIARY 0x7ffffffd |
| 377 | #define DT_USED 0x7ffffffe |
| 378 | #define DT_FILTER 0x7fffffff |
| 379 | |
| 380 | /* Values used in DT_FEATURE_1 .dynamic entry. */ |
| 381 | #define DTF_1_PARINIT 0x00000001 |
| 382 | |
| 383 | /* Flag values used in the DT_POSFLAG_1 .dynamic entry. */ |
| 384 | #define DF_P1_LAZYLOAD 0x00000001 |
| 385 | #define DF_P1_GROUPPERM 0x00000002 |
| 386 | |
| 387 | /* Flag value in in the DT_1_FLAGS .dynamic entry. */ |
| 388 | #define DF_1_NOW 0x00000001 |
| 389 | #define DF_1_GLOBAL 0x00000002 |
| 390 | #define DF_1_GROUP 0x00000004 |
| 391 | #define DF_1_NODELETE 0x00000008 |
| 392 | #define DF_1_LOADFLTR 0x00000010 |
| 393 | #define DF_1_INITFIRST 0x00000020 |
| 394 | #define DF_1_NOOPEN 0x00000040 |
| 395 | #define DF_1_ORIGIN 0x00000080 |
| 396 | #define DF_1_DIRECT 0x00000100 |
| 397 | #define DF_1_TRANS 0x00000200 |
| 398 | #define DF_1_INTERPOSE 0x00000400 |
| 399 | |
| 400 | /* These constants are used for the version number of a Elf32_Verdef |
| 401 | structure. */ |
| 402 | |
| 403 | #define VER_DEF_NONE 0 |
| 404 | #define VER_DEF_CURRENT 1 |
| 405 | |
| 406 | /* These constants appear in the vd_flags field of a Elf32_Verdef |
| 407 | structure. */ |
| 408 | |
| 409 | #define VER_FLG_BASE 0x1 |
| 410 | #define VER_FLG_WEAK 0x2 |
| 411 | |
| 412 | /* These special constants can be found in an Elf32_Versym field. */ |
| 413 | |
| 414 | #define VER_NDX_LOCAL 0 |
| 415 | #define VER_NDX_GLOBAL 1 |
| 416 | |
| 417 | /* These constants are used for the version number of a Elf32_Verneed |
| 418 | structure. */ |
| 419 | |
| 420 | #define VER_NEED_NONE 0 |
| 421 | #define VER_NEED_CURRENT 1 |
| 422 | |
| 423 | /* This flag appears in a Versym structure. It means that the symbol |
| 424 | is hidden, and is only visible with an explicit version number. |
| 425 | This is a GNU extension. */ |
| 426 | |
| 427 | #define VERSYM_HIDDEN 0x8000 |
| 428 | |
| 429 | /* This is the mask for the rest of the Versym information. */ |
| 430 | |
| 431 | #define VERSYM_VERSION 0x7fff |
| 432 | |
| 433 | /* This is a special token which appears as part of a symbol name. It |
| 434 | indictes that the rest of the name is actually the name of a |
| 435 | version node, and is not part of the actual name. This is a GNU |
| 436 | extension. For example, the symbol name `stat@ver2' is taken to |
| 437 | mean the symbol `stat' in version `ver2'. */ |
| 438 | |
| 439 | #define ELF_VER_CHR '@' |
| 440 | |
| 441 | /* Possible values for si_boundto. */ |
| 442 | #define SYMINFO_BT_SELF 0xffff /* Symbol bound to self */ |
| 443 | #define SYMINFO_BT_PARENT 0xfffe /* Symbol bound to parent */ |
| 444 | #define SYMINFO_BT_LOWRESERVE 0xff00 /* Beginning of reserved entries */ |
| 445 | |
| 446 | /* Possible bitmasks for si_flags. */ |
| 447 | #define SYMINFO_FLG_DIRECT 0x0001 /* Direct bound symbol */ |
| 448 | #define SYMINFO_FLG_PASSTHRU 0x0002 /* Pass-thru symbol for translator */ |
| 449 | #define SYMINFO_FLG_COPY 0x0004 /* Symbol is a copy-reloc */ |
| 450 | #define SYMINFO_FLG_LAZYLOAD 0x0008 /* Symbol bound to object to be lazy |
| 451 | loaded */ |
| 452 | /* Syminfo version values. */ |
| 453 | #define SYMINFO_NONE 0 |
| 454 | #define SYMINFO_CURRENT 1 |
| 455 | #define SYMINFO_NUM 2 |
| 456 | |
| 457 | #endif /* _ELF_COMMON_H */ |