include/elf/mips.h

   1 /* MIPS ELF support for BFD.
   2    Copyright (C) 1993-2014 Free Software Foundation, Inc.
   3
   4    By Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>, from
   5    information in the System V Application Binary Interface, MIPS
   6    Processor Supplement.
   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 3 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., 51 Franklin Street - Fifth Floor, Boston,
  23    MA 02110-1301, USA.  */
  24
  25 /* This file holds definitions specific to the MIPS ELF ABI.  Note
  26    that most of this is not actually implemented by BFD.  */
  27
  28 #ifndef _ELF_MIPS_H
  29 #define _ELF_MIPS_H
  30
  31 #include "elf/reloc-macros.h"
  32
  33 /* Relocation types.  */
  34 START_RELOC_NUMBERS (elf_mips_reloc_type)
  35   RELOC_NUMBER (R_MIPS_NONE, 0)
  36   RELOC_NUMBER (R_MIPS_16, 1)
  37   RELOC_NUMBER (R_MIPS_32, 2)           /* In Elf 64: alias R_MIPS_ADD */
  38   RELOC_NUMBER (R_MIPS_REL32, 3)        /* In Elf 64: alias R_MIPS_REL */
  39   RELOC_NUMBER (R_MIPS_26, 4)
  40   RELOC_NUMBER (R_MIPS_HI16, 5)
  41   RELOC_NUMBER (R_MIPS_LO16, 6)
  42   RELOC_NUMBER (R_MIPS_GPREL16, 7)      /* In Elf 64: alias R_MIPS_GPREL */
  43   RELOC_NUMBER (R_MIPS_LITERAL, 8)
  44   RELOC_NUMBER (R_MIPS_GOT16, 9)        /* In Elf 64: alias R_MIPS_GOT */
  45   RELOC_NUMBER (R_MIPS_PC16, 10)
  46   RELOC_NUMBER (R_MIPS_CALL16, 11)      /* In Elf 64: alias R_MIPS_CALL */
  47   RELOC_NUMBER (R_MIPS_GPREL32, 12)
  48   /* The remaining relocs are defined on Irix, although they are not
  49      in the MIPS ELF ABI.  */
  50   RELOC_NUMBER (R_MIPS_UNUSED1, 13)
  51   RELOC_NUMBER (R_MIPS_UNUSED2, 14)
  52   RELOC_NUMBER (R_MIPS_UNUSED3, 15)
  53   RELOC_NUMBER (R_MIPS_SHIFT5, 16)
  54   RELOC_NUMBER (R_MIPS_SHIFT6, 17)
  55   RELOC_NUMBER (R_MIPS_64, 18)
  56   RELOC_NUMBER (R_MIPS_GOT_DISP, 19)
  57   RELOC_NUMBER (R_MIPS_GOT_PAGE, 20)
  58   RELOC_NUMBER (R_MIPS_GOT_OFST, 21)
  59   RELOC_NUMBER (R_MIPS_GOT_HI16, 22)
  60   RELOC_NUMBER (R_MIPS_GOT_LO16, 23)
  61   RELOC_NUMBER (R_MIPS_SUB, 24)
  62   RELOC_NUMBER (R_MIPS_INSERT_A, 25)
  63   RELOC_NUMBER (R_MIPS_INSERT_B, 26)
  64   RELOC_NUMBER (R_MIPS_DELETE, 27)
  65   RELOC_NUMBER (R_MIPS_HIGHER, 28)
  66   RELOC_NUMBER (R_MIPS_HIGHEST, 29)
  67   RELOC_NUMBER (R_MIPS_CALL_HI16, 30)
  68   RELOC_NUMBER (R_MIPS_CALL_LO16, 31)
  69   RELOC_NUMBER (R_MIPS_SCN_DISP, 32)
  70   RELOC_NUMBER (R_MIPS_REL16, 33)
  71   RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34)
  72   RELOC_NUMBER (R_MIPS_PJUMP, 35)
  73   RELOC_NUMBER (R_MIPS_RELGOT, 36)
  74   RELOC_NUMBER (R_MIPS_JALR, 37)
  75   /* TLS relocations.  */
  76   RELOC_NUMBER (R_MIPS_TLS_DTPMOD32, 38)
  77   RELOC_NUMBER (R_MIPS_TLS_DTPREL32, 39)
  78   RELOC_NUMBER (R_MIPS_TLS_DTPMOD64, 40)
  79   RELOC_NUMBER (R_MIPS_TLS_DTPREL64, 41)
  80   RELOC_NUMBER (R_MIPS_TLS_GD, 42)
  81   RELOC_NUMBER (R_MIPS_TLS_LDM, 43)
  82   RELOC_NUMBER (R_MIPS_TLS_DTPREL_HI16, 44)
  83   RELOC_NUMBER (R_MIPS_TLS_DTPREL_LO16, 45)
  84   RELOC_NUMBER (R_MIPS_TLS_GOTTPREL, 46)
  85   RELOC_NUMBER (R_MIPS_TLS_TPREL32, 47)
  86   RELOC_NUMBER (R_MIPS_TLS_TPREL64, 48)
  87   RELOC_NUMBER (R_MIPS_TLS_TPREL_HI16, 49)
  88   RELOC_NUMBER (R_MIPS_TLS_TPREL_LO16, 50)
  89   RELOC_NUMBER (R_MIPS_GLOB_DAT, 51)
  90   FAKE_RELOC (R_MIPS_max, 52)
  91   /* These relocs are used for the mips16.  */
  92   FAKE_RELOC (R_MIPS16_min, 100)
  93   RELOC_NUMBER (R_MIPS16_26, 100)
  94   RELOC_NUMBER (R_MIPS16_GPREL, 101)
  95   RELOC_NUMBER (R_MIPS16_GOT16, 102)
  96   RELOC_NUMBER (R_MIPS16_CALL16, 103)
  97   RELOC_NUMBER (R_MIPS16_HI16, 104)
  98   RELOC_NUMBER (R_MIPS16_LO16, 105)
  99   RELOC_NUMBER (R_MIPS16_TLS_GD, 106)
 100   RELOC_NUMBER (R_MIPS16_TLS_LDM, 107)
 101   RELOC_NUMBER (R_MIPS16_TLS_DTPREL_HI16, 108)
 102   RELOC_NUMBER (R_MIPS16_TLS_DTPREL_LO16, 109)
 103   RELOC_NUMBER (R_MIPS16_TLS_GOTTPREL, 110)
 104   RELOC_NUMBER (R_MIPS16_TLS_TPREL_HI16, 111)
 105   RELOC_NUMBER (R_MIPS16_TLS_TPREL_LO16, 112)
 106   FAKE_RELOC (R_MIPS16_max, 113)
 107   /* These relocations are specific to VxWorks.  */
 108   RELOC_NUMBER (R_MIPS_COPY, 126)
 109   RELOC_NUMBER (R_MIPS_JUMP_SLOT, 127)
 110
 111   /* These relocations are specific to microMIPS.  */
 112   FAKE_RELOC (R_MICROMIPS_min, 130)
 113   RELOC_NUMBER (R_MICROMIPS_26_S1, 133)
 114   RELOC_NUMBER (R_MICROMIPS_HI16, 134)
 115   RELOC_NUMBER (R_MICROMIPS_LO16, 135)
 116   RELOC_NUMBER (R_MICROMIPS_GPREL16, 136)       /* In Elf 64:
 117                                                    alias R_MICROMIPS_GPREL */
 118   RELOC_NUMBER (R_MICROMIPS_LITERAL, 137)
 119   RELOC_NUMBER (R_MICROMIPS_GOT16, 138)         /* In Elf 64:
 120                                                    alias R_MICROMIPS_GOT */
 121   RELOC_NUMBER (R_MICROMIPS_PC7_S1, 139)
 122   RELOC_NUMBER (R_MICROMIPS_PC10_S1, 140)
 123   RELOC_NUMBER (R_MICROMIPS_PC16_S1, 141)
 124   RELOC_NUMBER (R_MICROMIPS_CALL16, 142)        /* In Elf 64:
 125                                                    alias R_MICROMIPS_CALL */
 126   RELOC_NUMBER (R_MICROMIPS_GOT_DISP, 145)
 127   RELOC_NUMBER (R_MICROMIPS_GOT_PAGE, 146)
 128   RELOC_NUMBER (R_MICROMIPS_GOT_OFST, 147)
 129   RELOC_NUMBER (R_MICROMIPS_GOT_HI16, 148)
 130   RELOC_NUMBER (R_MICROMIPS_GOT_LO16, 149)
 131   RELOC_NUMBER (R_MICROMIPS_SUB, 150)
 132   RELOC_NUMBER (R_MICROMIPS_HIGHER, 151)
 133   RELOC_NUMBER (R_MICROMIPS_HIGHEST, 152)
 134   RELOC_NUMBER (R_MICROMIPS_CALL_HI16, 153)
 135   RELOC_NUMBER (R_MICROMIPS_CALL_LO16, 154)
 136   RELOC_NUMBER (R_MICROMIPS_SCN_DISP, 155)
 137   RELOC_NUMBER (R_MICROMIPS_JALR, 156)
 138   RELOC_NUMBER (R_MICROMIPS_HI0_LO16, 157)
 139   /* TLS relocations.  */
 140   RELOC_NUMBER (R_MICROMIPS_TLS_GD, 162)
 141   RELOC_NUMBER (R_MICROMIPS_TLS_LDM, 163)
 142   RELOC_NUMBER (R_MICROMIPS_TLS_DTPREL_HI16, 164)
 143   RELOC_NUMBER (R_MICROMIPS_TLS_DTPREL_LO16, 165)
 144   RELOC_NUMBER (R_MICROMIPS_TLS_GOTTPREL, 166)
 145   RELOC_NUMBER (R_MICROMIPS_TLS_TPREL_HI16, 169)
 146   RELOC_NUMBER (R_MICROMIPS_TLS_TPREL_LO16, 170)
 147   /* microMIPS GP- and PC-relative relocations. */
 148   RELOC_NUMBER (R_MICROMIPS_GPREL7_S2, 172)
 149   RELOC_NUMBER (R_MICROMIPS_PC23_S2, 173)
 150   FAKE_RELOC (R_MICROMIPS_max, 174)
 151
 152   /* This was a GNU extension used by embedded-PIC.  It was co-opted by
 153      mips-linux for exception-handling data.  GCC stopped using it in
 154      May, 2004, then started using it again for compact unwind tables.  */
 155   RELOC_NUMBER (R_MIPS_PC32, 248)
 156   RELOC_NUMBER (R_MIPS_EH, 249)
 157   /* FIXME: this relocation is used internally by gas.  */
 158   RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250)
 159   /* These are GNU extensions to enable C++ vtable garbage collection.  */
 160   RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253)
 161   RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254)
 162 END_RELOC_NUMBERS (R_MIPS_maxext)
 163
 164 /* Processor specific flags for the ELF header e_flags field.  */
 165
 166 /* At least one .noreorder directive appears in the source.  */
 167 #define EF_MIPS_NOREORDER       0x00000001
 168
 169 /* File contains position independent code.  */
 170 #define EF_MIPS_PIC             0x00000002
 171
 172 /* Code in file uses the standard calling sequence for calling
 173    position independent code.  */
 174 #define EF_MIPS_CPIC            0x00000004
 175
 176 /* ???  Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a.  */
 177 #define EF_MIPS_XGOT            0x00000008
 178
 179 /* Code in file uses UCODE (obsolete) */
 180 #define EF_MIPS_UCODE           0x00000010
 181
 182 /* Code in file uses new ABI (-n32 on Irix 6).  */
 183 #define EF_MIPS_ABI2            0x00000020
 184
 185 /* Process the .MIPS.options section first by ld */
 186 #define EF_MIPS_OPTIONS_FIRST   0x00000080
 187
 188 /* Indicates code compiled for a 64-bit machine in 32-bit mode
 189    (regs are 32-bits wide).  */
 190 #define EF_MIPS_32BITMODE       0x00000100
 191
 192 /* 32-bit machine but FP registers are 64 bit (-mfp64).  */
 193 #define EF_MIPS_FP64            0x00000200
 194
 195 /* Code in file uses the IEEE 754-2008 NaN encoding convention.  */
 196 #define EF_MIPS_NAN2008         0x00000400
 197
 198 /* Architectural Extensions used by this file */
 199 #define EF_MIPS_ARCH_ASE        0x0f000000
 200
 201 /* Use MDMX multimedia extensions */
 202 #define EF_MIPS_ARCH_ASE_MDMX   0x08000000
 203
 204 /* Use MIPS-16 ISA extensions */
 205 #define EF_MIPS_ARCH_ASE_M16    0x04000000
 206
 207 /* Use MICROMIPS ISA extensions.  */
 208 #define EF_MIPS_ARCH_ASE_MICROMIPS      0x02000000
 209
 210 /* Four bit MIPS architecture field.  */
 211 #define EF_MIPS_ARCH            0xf0000000
 212
 213 /* -mips1 code.  */
 214 #define E_MIPS_ARCH_1           0x00000000
 215
 216 /* -mips2 code.  */
 217 #define E_MIPS_ARCH_2           0x10000000
 218
 219 /* -mips3 code.  */
 220 #define E_MIPS_ARCH_3           0x20000000
 221
 222 /* -mips4 code.  */
 223 #define E_MIPS_ARCH_4           0x30000000
 224
 225 /* -mips5 code.  */
 226 #define E_MIPS_ARCH_5           0x40000000
 227
 228 /* -mips32 code.  */
 229 #define E_MIPS_ARCH_32          0x50000000
 230
 231 /* -mips64 code.  */
 232 #define E_MIPS_ARCH_64          0x60000000
 233
 234 /* -mips32r2 code.  */
 235 #define E_MIPS_ARCH_32R2        0x70000000
 236
 237 /* -mips64r2 code.  */
 238 #define E_MIPS_ARCH_64R2        0x80000000
 239
 240 /* The ABI of the file.  Also see EF_MIPS_ABI2 above. */
 241 #define EF_MIPS_ABI             0x0000F000
 242
 243 /* The original o32 abi. */
 244 #define E_MIPS_ABI_O32          0x00001000
 245
 246 /* O32 extended to work on 64 bit architectures */
 247 #define E_MIPS_ABI_O64          0x00002000
 248
 249 /* EABI in 32 bit mode */
 250 #define E_MIPS_ABI_EABI32       0x00003000
 251
 252 /* EABI in 64 bit mode */
 253 #define E_MIPS_ABI_EABI64       0x00004000
 254
 255
 256 /* Machine variant if we know it.  This field was invented at Cygnus,
 257    but it is hoped that other vendors will adopt it.  If some standard
 258    is developed, this code should be changed to follow it. */
 259
 260 #define EF_MIPS_MACH            0x00FF0000
 261
 262 /* Cygnus is choosing values between 80 and 9F;
 263    00 - 7F should be left for a future standard;
 264    the rest are open. */
 265
 266 #define E_MIPS_MACH_3900        0x00810000
 267 #define E_MIPS_MACH_4010        0x00820000
 268 #define E_MIPS_MACH_4100        0x00830000
 269 #define E_MIPS_MACH_4650        0x00850000
 270 #define E_MIPS_MACH_4120        0x00870000
 271 #define E_MIPS_MACH_4111        0x00880000
 272 #define E_MIPS_MACH_SB1         0x008a0000
 273 #define E_MIPS_MACH_OCTEON      0x008b0000
 274 #define E_MIPS_MACH_XLR         0x008c0000
 275 #define E_MIPS_MACH_OCTEON2     0x008d0000
 276 #define E_MIPS_MACH_OCTEON3     0x008e0000
 277 #define E_MIPS_MACH_5400        0x00910000
 278 #define E_MIPS_MACH_5900        0x00920000
 279 #define E_MIPS_MACH_5500        0x00980000
 280 #define E_MIPS_MACH_9000        0x00990000
 281 #define E_MIPS_MACH_LS2E        0x00A00000
 282 #define E_MIPS_MACH_LS2F        0x00A10000
 283 #define E_MIPS_MACH_LS3A        0x00A20000
 284 \f
 285 /* Processor specific section indices.  These sections do not actually
 286    exist.  Symbols with a st_shndx field corresponding to one of these
 287    values have a special meaning.  */
 288
 289 /* Defined and allocated common symbol.  Value is virtual address.  If
 290    relocated, alignment must be preserved.  */
 291 #define SHN_MIPS_ACOMMON        SHN_LORESERVE
 292
 293 /* Defined and allocated text symbol.  Value is virtual address.
 294    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 295 #define SHN_MIPS_TEXT           (SHN_LORESERVE + 1)
 296
 297 /* Defined and allocated data symbol.  Value is virtual address.
 298    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 299 #define SHN_MIPS_DATA           (SHN_LORESERVE + 2)
 300
 301 /* Small common symbol.  */
 302 #define SHN_MIPS_SCOMMON        (SHN_LORESERVE + 3)
 303
 304 /* Small undefined symbol.  */
 305 #define SHN_MIPS_SUNDEFINED     (SHN_LORESERVE + 4)
 306 \f
 307 /* Processor specific section types.  */
 308
 309 /* Section contains the set of dynamic shared objects used when
 310    statically linking.  */
 311 #define SHT_MIPS_LIBLIST        0x70000000
 312
 313 /* I'm not sure what this is, but it's used on Irix 5.  */
 314 #define SHT_MIPS_MSYM           0x70000001
 315
 316 /* Section contains list of symbols whose definitions conflict with
 317    symbols defined in shared objects.  */
 318 #define SHT_MIPS_CONFLICT       0x70000002
 319
 320 /* Section contains the global pointer table.  */
 321 #define SHT_MIPS_GPTAB          0x70000003
 322
 323 /* Section contains microcode information.  The exact format is
 324    unspecified.  */
 325 #define SHT_MIPS_UCODE          0x70000004
 326
 327 /* Section contains some sort of debugging information.  The exact
 328    format is unspecified.  It's probably ECOFF symbols.  */
 329 #define SHT_MIPS_DEBUG          0x70000005
 330
 331 /* Section contains register usage information.  */
 332 #define SHT_MIPS_REGINFO        0x70000006
 333
 334 /* ??? */
 335 #define SHT_MIPS_PACKAGE        0x70000007
 336
 337 /* ??? */
 338 #define SHT_MIPS_PACKSYM        0x70000008
 339
 340 /* ??? */
 341 #define SHT_MIPS_RELD           0x70000009
 342
 343 /* Section contains interface information.  */
 344 #define SHT_MIPS_IFACE          0x7000000b
 345
 346 /* Section contains description of contents of another section.  */
 347 #define SHT_MIPS_CONTENT        0x7000000c
 348
 349 /* Section contains miscellaneous options.  */
 350 #define SHT_MIPS_OPTIONS        0x7000000d
 351
 352 /* ??? */
 353 #define SHT_MIPS_SHDR           0x70000010
 354
 355 /* ??? */
 356 #define SHT_MIPS_FDESC          0x70000011
 357
 358 /* ??? */
 359 #define SHT_MIPS_EXTSYM         0x70000012
 360
 361 /* ??? */
 362 #define SHT_MIPS_DENSE          0x70000013
 363
 364 /* ??? */
 365 #define SHT_MIPS_PDESC          0x70000014
 366
 367 /* ??? */
 368 #define SHT_MIPS_LOCSYM         0x70000015
 369
 370 /* ??? */
 371 #define SHT_MIPS_AUXSYM         0x70000016
 372
 373 /* ??? */
 374 #define SHT_MIPS_OPTSYM         0x70000017
 375
 376 /* ??? */
 377 #define SHT_MIPS_LOCSTR         0x70000018
 378
 379 /* ??? */
 380 #define SHT_MIPS_LINE           0x70000019
 381
 382 /* ??? */
 383 #define SHT_MIPS_RFDESC         0x7000001a
 384
 385 /* Delta C++: symbol table */
 386 #define SHT_MIPS_DELTASYM       0x7000001b
 387
 388 /* Delta C++: instance table */
 389 #define SHT_MIPS_DELTAINST      0x7000001c
 390
 391 /* Delta C++: class table */
 392 #define SHT_MIPS_DELTACLASS     0x7000001d
 393
 394 /* DWARF debugging section.  */
 395 #define SHT_MIPS_DWARF          0x7000001e
 396
 397 /* Delta C++: declarations */
 398 #define SHT_MIPS_DELTADECL      0x7000001f
 399
 400 /* List of libraries the binary depends on.  Includes a time stamp, version
 401    number.  */
 402 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 403
 404 /* Events section.  */
 405 #define SHT_MIPS_EVENTS         0x70000021
 406
 407 /* ??? */
 408 #define SHT_MIPS_TRANSLATE      0x70000022
 409
 410 /* Special pixie sections */
 411 #define SHT_MIPS_PIXIE          0x70000023
 412
 413 /* Address translation table (for debug info) */
 414 #define SHT_MIPS_XLATE          0x70000024
 415
 416 /* SGI internal address translation table (for debug info) */
 417 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 418
 419 /* Intermediate code */
 420 #define SHT_MIPS_WHIRL          0x70000026
 421
 422 /* C++ exception handling region info */
 423 #define SHT_MIPS_EH_REGION      0x70000027
 424
 425 /* Obsolete address translation table (for debug info) */
 426 #define SHT_MIPS_XLATE_OLD      0x70000028
 427
 428 /* Runtime procedure descriptor table exception information (ucode) ??? */
 429 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 430
 431 /* ABI related flags section.  */
 432 #define SHT_MIPS_ABIFLAGS       0x7000002a
 433
 434 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 435    following structure.  The sh_link field is the section index of the
 436    string table.  The sh_info field is the number of entries in the
 437    section.  */
 438 typedef struct
 439 {
 440   /* String table index for name of shared object.  */
 441   unsigned long l_name;
 442   /* Time stamp.  */
 443   unsigned long l_time_stamp;
 444   /* Checksum of symbol names and common sizes.  */
 445   unsigned long l_checksum;
 446   /* String table index for version.  */
 447   unsigned long l_version;
 448   /* Flags.  */
 449   unsigned long l_flags;
 450 } Elf32_Lib;
 451
 452 /* The external version of Elf32_Lib.  */
 453 typedef struct
 454 {
 455   unsigned char l_name[4];
 456   unsigned char l_time_stamp[4];
 457   unsigned char l_checksum[4];
 458   unsigned char l_version[4];
 459   unsigned char l_flags[4];
 460 } Elf32_External_Lib;
 461
 462 /* The l_flags field of an Elf32_Lib structure may contain the
 463    following flags.  */
 464
 465 /* Require an exact match at runtime.  */
 466 #define LL_EXACT_MATCH          0x00000001
 467
 468 /* Ignore version incompatibilities at runtime.  */
 469 #define LL_IGNORE_INT_VER       0x00000002
 470
 471 /* Require matching minor version number.  */
 472 #define LL_REQUIRE_MINOR        0x00000004
 473
 474 /* ??? */
 475 #define LL_EXPORTS              0x00000008
 476
 477 /* Delay loading of this library until really needed.  */
 478 #define LL_DELAY_LOAD           0x00000010
 479
 480 /* ??? Delta C++ stuff ??? */
 481 #define LL_DELTA                0x00000020
 482
 483
 484 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 485    .dynsym section.  Each element has the following type.  */
 486 typedef unsigned long Elf32_Conflict;
 487 typedef unsigned char Elf32_External_Conflict[4];
 488
 489 typedef unsigned long Elf64_Conflict;
 490 typedef unsigned char Elf64_External_Conflict[8];
 491
 492 /* A section of type SHT_MIPS_GPTAB contains information about how
 493    much GP space would be required for different -G arguments.  This
 494    information is only used so that the linker can provide informative
 495    suggestions as to the best -G value to use.  The sh_info field is
 496    the index of the section for which this information applies.  The
 497    contents of the section are an array of the following union.  The
 498    first element uses the gt_header field.  The remaining elements use
 499    the gt_entry field.  */
 500 typedef union
 501 {
 502   struct
 503     {
 504       /* -G value actually used for this object file.  */
 505       unsigned long gt_current_g_value;
 506       /* Unused.  */
 507       unsigned long gt_unused;
 508     } gt_header;
 509   struct
 510     {
 511       /* If this -G argument has been used...  */
 512       unsigned long gt_g_value;
 513       /* ...this many GP section bytes would be required.  */
 514       unsigned long gt_bytes;
 515     } gt_entry;
 516 } Elf32_gptab;
 517
 518 /* The external version of Elf32_gptab.  */
 519
 520 typedef union
 521 {
 522   struct
 523     {
 524       unsigned char gt_current_g_value[4];
 525       unsigned char gt_unused[4];
 526     } gt_header;
 527   struct
 528     {
 529       unsigned char gt_g_value[4];
 530       unsigned char gt_bytes[4];
 531     } gt_entry;
 532 } Elf32_External_gptab;
 533
 534 /* A section of type SHT_MIPS_REGINFO contains the following
 535    structure.  */
 536 typedef struct
 537 {
 538   /* Mask of general purpose registers used.  */
 539   unsigned long ri_gprmask;
 540   /* Mask of co-processor registers used.  */
 541   unsigned long ri_cprmask[4];
 542   /* GP register value for this object file.  */
 543   long ri_gp_value;
 544 } Elf32_RegInfo;
 545
 546 /* The external version of the Elf_RegInfo structure.  */
 547 typedef struct
 548 {
 549   unsigned char ri_gprmask[4];
 550   unsigned char ri_cprmask[4][4];
 551   unsigned char ri_gp_value[4];
 552 } Elf32_External_RegInfo;
 553
 554 /* MIPS ELF .reginfo swapping routines.  */
 555 extern void bfd_mips_elf32_swap_reginfo_in
 556   (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
 557 extern void bfd_mips_elf32_swap_reginfo_out
 558   (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
 559 \f
 560 /* Processor specific section flags.  */
 561
 562 /* This section must be in the global data area.  */
 563 #define SHF_MIPS_GPREL          0x10000000
 564
 565 /* This section should be merged.  */
 566 #define SHF_MIPS_MERGE          0x20000000
 567
 568 /* This section contains address data of size implied by section
 569    element size.  */
 570 #define SHF_MIPS_ADDR           0x40000000
 571
 572 /* This section contains string data.  */
 573 #define SHF_MIPS_STRING         0x80000000
 574
 575 /* This section may not be stripped.  */
 576 #define SHF_MIPS_NOSTRIP        0x08000000
 577
 578 /* This section is local to threads.  */
 579 #define SHF_MIPS_LOCAL          0x04000000
 580
 581 /* Linker should generate implicit weak names for this section.  */
 582 #define SHF_MIPS_NAMES          0x02000000
 583
 584 /* Section contais text/data which may be replicated in other sections.
 585    Linker should retain only one copy.  */
 586 #define SHF_MIPS_NODUPES        0x01000000
 587 \f
 588 /* Processor specific program header types.  */
 589
 590 /* Register usage information.  Identifies one .reginfo section.  */
 591 #define PT_MIPS_REGINFO         0x70000000
 592
 593 /* Runtime procedure table.  */
 594 #define PT_MIPS_RTPROC          0x70000001
 595
 596 /* .MIPS.options section.  */
 597 #define PT_MIPS_OPTIONS         0x70000002
 598
 599 /* Records ABI related flags.  */
 600 #define PT_MIPS_ABIFLAGS        0x70000003
 601 \f
 602 /* Processor specific dynamic array tags.  */
 603
 604 /* 32 bit version number for runtime linker interface.  */
 605 #define DT_MIPS_RLD_VERSION     0x70000001
 606
 607 /* Time stamp.  */
 608 #define DT_MIPS_TIME_STAMP      0x70000002
 609
 610 /* Checksum of external strings and common sizes.  */
 611 #define DT_MIPS_ICHECKSUM       0x70000003
 612
 613 /* Index of version string in string table.  */
 614 #define DT_MIPS_IVERSION        0x70000004
 615
 616 /* 32 bits of flags.  */
 617 #define DT_MIPS_FLAGS           0x70000005
 618
 619 /* Base address of the segment.  */
 620 #define DT_MIPS_BASE_ADDRESS    0x70000006
 621
 622 /* ??? */
 623 #define DT_MIPS_MSYM            0x70000007
 624
 625 /* Address of .conflict section.  */
 626 #define DT_MIPS_CONFLICT        0x70000008
 627
 628 /* Address of .liblist section.  */
 629 #define DT_MIPS_LIBLIST         0x70000009
 630
 631 /* Number of local global offset table entries.  */
 632 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 633
 634 /* Number of entries in the .conflict section.  */
 635 #define DT_MIPS_CONFLICTNO      0x7000000b
 636
 637 /* Number of entries in the .liblist section.  */
 638 #define DT_MIPS_LIBLISTNO       0x70000010
 639
 640 /* Number of entries in the .dynsym section.  */
 641 #define DT_MIPS_SYMTABNO        0x70000011
 642
 643 /* Index of first external dynamic symbol not referenced locally.  */
 644 #define DT_MIPS_UNREFEXTNO      0x70000012
 645
 646 /* Index of first dynamic symbol in global offset table.  */
 647 #define DT_MIPS_GOTSYM          0x70000013
 648
 649 /* Number of page table entries in global offset table.  */
 650 #define DT_MIPS_HIPAGENO        0x70000014
 651
 652 /* Address of run time loader map, used for debugging.  */
 653 #define DT_MIPS_RLD_MAP         0x70000016
 654
 655 /* Delta C++ class definition.  */
 656 #define DT_MIPS_DELTA_CLASS     0x70000017
 657
 658 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 659 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 660
 661 /* Delta C++ class instances.  */
 662 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 663
 664 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 665 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 666
 667 /* Delta relocations.  */
 668 #define DT_MIPS_DELTA_RELOC     0x7000001b
 669
 670 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 671 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 672
 673 /* Delta symbols that Delta relocations refer to.  */
 674 #define DT_MIPS_DELTA_SYM       0x7000001d
 675
 676 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 677 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 678
 679 /* Delta symbols that hold class declarations.  */
 680 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 681
 682 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 683 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 684
 685 /* Flags indicating information about C++ flavor.  */
 686 #define DT_MIPS_CXX_FLAGS       0x70000022
 687
 688 /* Pixie information (???).  */
 689 #define DT_MIPS_PIXIE_INIT      0x70000023
 690
 691 /* Address of .MIPS.symlib */
 692 #define DT_MIPS_SYMBOL_LIB      0x70000024
 693
 694 /* The GOT index of the first PTE for a segment */
 695 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 696
 697 /* The GOT index of the first PTE for a local symbol */
 698 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 699
 700 /* The GOT index of the first PTE for a hidden symbol */
 701 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 702
 703 /* The GOT index of the first PTE for a protected symbol */
 704 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 705
 706 /* Address of `.MIPS.options'.  */
 707 #define DT_MIPS_OPTIONS         0x70000029
 708
 709 /* Address of `.interface'.  */
 710 #define DT_MIPS_INTERFACE       0x7000002a
 711
 712 /* ??? */
 713 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 714
 715 /* Size of the .interface section.  */
 716 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 717
 718 /* Size of rld_text_resolve function stored in the GOT.  */
 719 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 720
 721 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 722 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 723
 724 /* Size of compact relocation section (O32).  */
 725 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 726
 727 /* GP value for auxiliary GOTs.  */
 728 #define DT_MIPS_GP_VALUE        0x70000030
 729
 730 /* Address of auxiliary .dynamic.  */
 731 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 732
 733 /* Address of the base of the PLTGOT.  */
 734 #define DT_MIPS_PLTGOT         0x70000032
 735
 736 /* Points to the base of a writable PLT.  */
 737 #define DT_MIPS_RWPLT          0x70000034
 738 \f
 739 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 740
 741 /* No flags.  */
 742 #define RHF_NONE                0x00000000
 743
 744 /* Uses shortcut pointers.  */
 745 #define RHF_QUICKSTART          0x00000001
 746
 747 /* Hash size is not a power of two.  */
 748 #define RHF_NOTPOT              0x00000002
 749
 750 /* Ignore LD_LIBRARY_PATH.  */
 751 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
 752
 753 /* DSO address may not be relocated. */
 754 #define RHF_NO_MOVE             0x00000008
 755
 756 /* SGI specific features. */
 757 #define RHF_SGI_ONLY            0x00000010
 758
 759 /* Guarantee that .init will finish executing before any non-init
 760    code in DSO is called. */
 761 #define RHF_GUARANTEE_INIT         0x00000020
 762
 763 /* Contains Delta C++ code. */
 764 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 765
 766 /* Guarantee that .init will start executing before any non-init
 767    code in DSO is called. */
 768 #define RHF_GUARANTEE_START_INIT   0x00000080
 769
 770 /* Generated by pixie. */
 771 #define RHF_PIXIE                  0x00000100
 772
 773 /* Delay-load DSO by default. */
 774 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 775
 776 /* Object may be requickstarted */
 777 #define RHF_REQUICKSTART           0x00000400
 778
 779 /* Object has been requickstarted */
 780 #define RHF_REQUICKSTARTED         0x00000800
 781
 782 /* Generated by cord. */
 783 #define RHF_CORD                   0x00001000
 784
 785 /* Object contains no unresolved undef symbols. */
 786 #define RHF_NO_UNRES_UNDEF         0x00002000
 787
 788 /* Symbol table is in a safe order. */
 789 #define RHF_RLD_ORDER_SAFE         0x00004000
 790 \f
 791 /* Special values for the st_other field in the symbol table.  These
 792    are used in an Irix 5 dynamic symbol table.  */
 793
 794 #define STO_DEFAULT             STV_DEFAULT
 795 #define STO_INTERNAL            STV_INTERNAL
 796 #define STO_HIDDEN              STV_HIDDEN
 797 #define STO_PROTECTED           STV_PROTECTED
 798
 799 /* Two topmost bits denote the MIPS ISA for .text symbols:
 800    + 00 -- standard MIPS code,
 801    + 10 -- microMIPS code,
 802    + 11 -- MIPS16 code; requires the following two bits to be set too.
 803    Note that one of the MIPS16 bits overlaps with STO_MIPS_PIC.  See below
 804    for details.  */
 805 #define STO_MIPS_ISA            (3 << 6)
 806
 807 /* The mask spanning the rest of MIPS psABI flags.  At most one is expected
 808    to be set except for STO_MIPS16.  */
 809 #define STO_MIPS_FLAGS          (~(STO_MIPS_ISA | ELF_ST_VISIBILITY (-1)))
 810
 811 /* The MIPS psABI was updated in 2008 with support for PLTs and copy
 812    relocs.  There are therefore two types of nonzero SHN_UNDEF functions:
 813    PLT entries and traditional MIPS lazy binding stubs.  We mark the former
 814    with STO_MIPS_PLT to distinguish them from the latter.  */
 815 #define STO_MIPS_PLT            0x8
 816 #define ELF_ST_IS_MIPS_PLT(other)                                       \
 817   ((ELF_ST_IS_MIPS16 (other)                                            \
 818     ? ((other) & (~STO_MIPS16 & STO_MIPS_FLAGS))                        \
 819     : ((other) & STO_MIPS_FLAGS)) == STO_MIPS_PLT)
 820 #define ELF_ST_SET_MIPS_PLT(other)                                      \
 821   ((ELF_ST_IS_MIPS16 (other)                                            \
 822     ? ((other) & (STO_MIPS16 | ~STO_MIPS_FLAGS))                        \
 823     : ((other) & ~STO_MIPS_FLAGS)) | STO_MIPS_PLT)
 824
 825 /* This value is used to mark PIC functions in an object that mixes
 826    PIC and non-PIC.  Note that this bit overlaps with STO_MIPS16,
 827    although MIPS16 symbols are never considered to be MIPS_PIC.  */
 828 #define STO_MIPS_PIC            0x20
 829 #define ELF_ST_IS_MIPS_PIC(other) (((other) & STO_MIPS_FLAGS) == STO_MIPS_PIC)
 830 #define ELF_ST_SET_MIPS_PIC(other)                                      \
 831   ((ELF_ST_IS_MIPS16 (other)                                            \
 832     ? ((other) & ~(STO_MIPS16 | STO_MIPS_FLAGS))                        \
 833     : ((other) & ~STO_MIPS_FLAGS)) | STO_MIPS_PIC)
 834
 835 /* This value is used for a mips16 .text symbol.  */
 836 #define STO_MIPS16              0xf0
 837 #define ELF_ST_IS_MIPS16(other) (((other) & STO_MIPS16) == STO_MIPS16)
 838 #define ELF_ST_SET_MIPS16(other) ((other) | STO_MIPS16)
 839
 840 /* This value is used for a microMIPS .text symbol.  To distinguish from
 841    STO_MIPS16, we set top two bits to be 10 to denote STO_MICROMIPS.  The
 842    mask is STO_MIPS_ISA.  */
 843 #define STO_MICROMIPS           (2 << 6)
 844 #define ELF_ST_IS_MICROMIPS(other) (((other) & STO_MIPS_ISA) == STO_MICROMIPS)
 845 #define ELF_ST_SET_MICROMIPS(other) (((other) & ~STO_MIPS_ISA) | STO_MICROMIPS)
 846
 847 /* Whether code compression (either of the MIPS16 or the microMIPS ASEs)
 848    has been indicated for a .text symbol.  */
 849 #define ELF_ST_IS_COMPRESSED(other) \
 850   (ELF_ST_IS_MIPS16 (other) || ELF_ST_IS_MICROMIPS (other))
 851
 852 /* This bit is used on Irix to indicate a symbol whose definition
 853    is optional - if, at final link time, it cannot be found, no
 854    error message should be produced.  */
 855 #define STO_OPTIONAL            (1 << 2)
 856 /* A macro to examine the STO_OPTIONAL bit.  */
 857 #define ELF_MIPS_IS_OPTIONAL(other)     ((other) & STO_OPTIONAL)
 858 \f
 859 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 860    relocation entry specifies up to three actual relocations, all at
 861    the same address.  The first relocation which required a symbol
 862    uses the symbol in the r_sym field.  The second relocation which
 863    requires a symbol uses the symbol in the r_ssym field.  If all
 864    three relocations require a symbol, the third one uses a zero
 865    value.  */
 866
 867 /* An entry in a 64 bit SHT_REL section.  */
 868
 869 typedef struct
 870 {
 871   /* Address of relocation.  */
 872   unsigned char r_offset[8];
 873   /* Symbol index.  */
 874   unsigned char r_sym[4];
 875   /* Special symbol.  */
 876   unsigned char r_ssym[1];
 877   /* Third relocation.  */
 878   unsigned char r_type3[1];
 879   /* Second relocation.  */
 880   unsigned char r_type2[1];
 881   /* First relocation.  */
 882   unsigned char r_type[1];
 883 } Elf64_Mips_External_Rel;
 884
 885 typedef struct
 886 {
 887   /* Address of relocation.  */
 888   bfd_vma r_offset;
 889   /* Symbol index.  */
 890   unsigned long r_sym;
 891   /* Special symbol.  */
 892   unsigned char r_ssym;
 893   /* Third relocation.  */
 894   unsigned char r_type3;
 895   /* Second relocation.  */
 896   unsigned char r_type2;
 897   /* First relocation.  */
 898   unsigned char r_type;
 899 } Elf64_Mips_Internal_Rel;
 900
 901 /* An entry in a 64 bit SHT_RELA section.  */
 902
 903 typedef struct
 904 {
 905   /* Address of relocation.  */
 906   unsigned char r_offset[8];
 907   /* Symbol index.  */
 908   unsigned char r_sym[4];
 909   /* Special symbol.  */
 910   unsigned char r_ssym[1];
 911   /* Third relocation.  */
 912   unsigned char r_type3[1];
 913   /* Second relocation.  */
 914   unsigned char r_type2[1];
 915   /* First relocation.  */
 916   unsigned char r_type[1];
 917   /* Addend.  */
 918   unsigned char r_addend[8];
 919 } Elf64_Mips_External_Rela;
 920
 921 typedef struct
 922 {
 923   /* Address of relocation.  */
 924   bfd_vma r_offset;
 925   /* Symbol index.  */
 926   unsigned long r_sym;
 927   /* Special symbol.  */
 928   unsigned char r_ssym;
 929   /* Third relocation.  */
 930   unsigned char r_type3;
 931   /* Second relocation.  */
 932   unsigned char r_type2;
 933   /* First relocation.  */
 934   unsigned char r_type;
 935   /* Addend.  */
 936   bfd_signed_vma r_addend;
 937 } Elf64_Mips_Internal_Rela;
 938
 939 /* MIPS ELF 64 relocation info access macros.  */
 940 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
 941 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
 942 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
 943 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
 944
 945 /* Values found in the r_ssym field of a relocation entry.  */
 946
 947 /* No relocation.  */
 948 #define RSS_UNDEF       0
 949
 950 /* Value of GP.  */
 951 #define RSS_GP          1
 952
 953 /* Value of GP in object being relocated.  */
 954 #define RSS_GP0         2
 955
 956 /* Address of location being relocated.  */
 957 #define RSS_LOC         3
 958 \f
 959 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 960    which starts with this header.  */
 961
 962 typedef struct
 963 {
 964   /* Type of option.  */
 965   unsigned char kind[1];
 966   /* Size of option descriptor, including header.  */
 967   unsigned char size[1];
 968   /* Section index of affected section, or 0 for global option.  */
 969   unsigned char section[2];
 970   /* Information specific to this kind of option.  */
 971   unsigned char info[4];
 972 } Elf_External_Options;
 973
 974 typedef struct
 975 {
 976   /* Type of option.  */
 977   unsigned char kind;
 978   /* Size of option descriptor, including header.  */
 979   unsigned char size;
 980   /* Section index of affected section, or 0 for global option.  */
 981   unsigned short section;
 982   /* Information specific to this kind of option.  */
 983   unsigned long info;
 984 } Elf_Internal_Options;
 985
 986 /* MIPS ELF option header swapping routines.  */
 987 extern void bfd_mips_elf_swap_options_in
 988   (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
 989 extern void bfd_mips_elf_swap_options_out
 990   (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
 991
 992 /* Values which may appear in the kind field of an Elf_Options
 993    structure.  */
 994
 995 /* Undefined.  */
 996 #define ODK_NULL        0
 997
 998 /* Register usage and GP value.  */
 999 #define ODK_REGINFO     1
1000
1001 /* Exception processing information.  */
1002 #define ODK_EXCEPTIONS  2
1003
1004 /* Section padding information.  */
1005 #define ODK_PAD         3
1006
1007 /* Hardware workarounds performed.  */
1008 #define ODK_HWPATCH     4
1009
1010 /* Fill value used by the linker.  */
1011 #define ODK_FILL        5
1012
1013 /* Reserved space for desktop tools.  */
1014 #define ODK_TAGS        6
1015
1016 /* Hardware workarounds, AND bits when merging.  */
1017 #define ODK_HWAND       7
1018
1019 /* Hardware workarounds, OR bits when merging.  */
1020 #define ODK_HWOR        8
1021
1022 /* GP group to use for text/data sections.  */
1023 #define ODK_GP_GROUP    9
1024
1025 /* ID information.  */
1026 #define ODK_IDENT       10
1027
1028 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
1029    structure.  In the 64 bit ABI, it is the following structure.  The
1030    info field of the options header is not used.  */
1031
1032 typedef struct
1033 {
1034   /* Mask of general purpose registers used.  */
1035   unsigned char ri_gprmask[4];
1036   /* Padding.  */
1037   unsigned char ri_pad[4];
1038   /* Mask of co-processor registers used.  */
1039   unsigned char ri_cprmask[4][4];
1040   /* GP register value for this object file.  */
1041   unsigned char ri_gp_value[8];
1042 } Elf64_External_RegInfo;
1043
1044 typedef struct
1045 {
1046   /* Mask of general purpose registers used.  */
1047   unsigned long ri_gprmask;
1048   /* Padding.  */
1049   unsigned long ri_pad;
1050   /* Mask of co-processor registers used.  */
1051   unsigned long ri_cprmask[4];
1052   /* GP register value for this object file.  */
1053   bfd_vma ri_gp_value;
1054 } Elf64_Internal_RegInfo;
1055
1056 /* ABI Flags structure version 0.  */
1057
1058 typedef struct
1059 {
1060   /* Version of flags structure.  */
1061   unsigned char version[2];
1062   /* The level of the ISA: 1-5, 32, 64.  */
1063   unsigned char isa_level[1];
1064   /* The revision of ISA: 0 for MIPS V and below, 1-n otherwise.  */
1065   unsigned char isa_rev[1];
1066   /* The size of general purpose registers.  */
1067   unsigned char gpr_size[1];
1068   /* The size of co-processor 1 registers.  */
1069   unsigned char cpr1_size[1];
1070   /* The size of co-processor 2 registers.  */
1071   unsigned char cpr2_size[1];
1072   /* The floating-point ABI.  */
1073   unsigned char fp_abi[1];
1074   /* Processor-specific extension.  */
1075   unsigned char isa_ext[4];
1076   /* Mask of ASEs used.  */
1077   unsigned char ases[4];
1078   /* Mask of general flags.  */
1079   unsigned char flags1[4];
1080   unsigned char flags2[4];
1081 } Elf_External_ABIFlags_v0;
1082
1083 typedef struct
1084 {
1085   /* Version of flags structure.  */
1086   unsigned short version;
1087   /* The level of the ISA: 1-5, 32, 64.  */
1088   unsigned char isa_level;
1089   /* The revision of ISA: 0 for MIPS V and below, 1-n otherwise.  */
1090   unsigned char isa_rev;
1091   /* The size of general purpose registers.  */
1092   unsigned char gpr_size;
1093   /* The size of co-processor 1 registers.  */
1094   unsigned char cpr1_size;
1095   /* The size of co-processor 2 registers.  */
1096   unsigned char cpr2_size;
1097   /* The floating-point ABI.  */
1098   unsigned char fp_abi;
1099   /* Processor-specific extension.  */
1100   unsigned long isa_ext;
1101   /* Mask of ASEs used.  */
1102   unsigned long ases;
1103   /* Mask of general flags.  */
1104   unsigned long flags1;
1105   unsigned long flags2;
1106 } Elf_Internal_ABIFlags_v0;
1107
1108 typedef struct
1109 {
1110   /* The hash value computed from the name of the corresponding
1111      dynamic symbol.  */
1112   unsigned char ms_hash_value[4];
1113   /* Contains both the dynamic relocation index and the symbol flags
1114      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
1115      to access the individual values.  The dynamic relocation index
1116      identifies the first entry in the .rel.dyn section that
1117      references the dynamic symbol corresponding to this msym entry.
1118      If the index is 0, no dynamic relocations are associated with the
1119      symbol.  The symbol flags field is reserved for future use.  */
1120   unsigned char ms_info[4];
1121 } Elf32_External_Msym;
1122
1123 typedef struct
1124 {
1125   /* The hash value computed from the name of the corresponding
1126      dynamic symbol.  */
1127   unsigned long ms_hash_value;
1128   /* Contains both the dynamic relocation index and the symbol flags
1129      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
1130      to access the individual values.  The dynamic relocation index
1131      identifies the first entry in the .rel.dyn section that
1132      references the dynamic symbol corresponding to this msym entry.
1133      If the index is 0, no dynamic relocations are associated with the
1134      symbol.  The symbol flags field is reserved for future use.  */
1135   unsigned long ms_info;
1136 } Elf32_Internal_Msym;
1137
1138 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
1139 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
1140 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
1141
1142 /* MIPS ELF reginfo swapping routines.  */
1143 extern void bfd_mips_elf64_swap_reginfo_in
1144   (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
1145 extern void bfd_mips_elf64_swap_reginfo_out
1146   (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
1147
1148 /* MIPS ELF flags swapping routines.  */
1149 extern void bfd_mips_elf_swap_abiflags_v0_in
1150   (bfd *, const Elf_External_ABIFlags_v0 *, Elf_Internal_ABIFlags_v0 *);
1151 extern void bfd_mips_elf_swap_abiflags_v0_out
1152   (bfd *, const Elf_Internal_ABIFlags_v0 *, Elf_External_ABIFlags_v0 *);
1153
1154 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
1155 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
1156 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
1157 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
1158 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
1159 #define OEX_FPDBUG      0x40000 /* Force precise floating-point
1160                                    exceptions (debug mode).  */
1161 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
1162
1163 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
1164 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
1165 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
1166 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
1167 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
1168 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
1169
1170 /* Masks for the info word of an ODK_PAD descriptor.  */
1171 #define OPAD_PREFIX     0x01
1172 #define OPAD_POSTFIX    0x02
1173 #define OPAD_SYMBOL     0x04
1174
1175 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
1176 #define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
1177 #define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
1178 #define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
1179 #define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
1180                                            (clean == 1).  */
1181 #define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
1182                                            load patch. */
1183
1184 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
1185 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
1186 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
1187
1188 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
1189 #define OHWA0_R4KEOP_CHECKED    0x00000001
1190 #define OHWA0_R4KEOP_CLEAN      0x00000002
1191
1192 /* Values for the xxx_size bytes of an ABI flags structure.  */
1193
1194 #define AFL_REG_NONE         0x00       /* No registers.  */
1195 #define AFL_REG_32           0x01       /* 32-bit registers.  */
1196 #define AFL_REG_64           0x02       /* 64-bit registers.  */
1197 #define AFL_REG_128          0x03       /* 128-bit registers.  */
1198
1199 /* Masks for the ases word of an ABI flags structure.  */
1200
1201 #define AFL_ASE_DSP          0x00000001 /* DSP ASE.  */
1202 #define AFL_ASE_DSPR2        0x00000002 /* DSP R2 ASE.  */
1203 #define AFL_ASE_EVA          0x00000004 /* Enhanced VA Scheme.  */
1204 #define AFL_ASE_MCU          0x00000008 /* MCU (MicroController) ASE.  */
1205 #define AFL_ASE_MDMX         0x00000010 /* MDMX ASE.  */
1206 #define AFL_ASE_MIPS3D       0x00000020 /* MIPS-3D ASE.  */
1207 #define AFL_ASE_MT           0x00000040 /* MT ASE.  */
1208 #define AFL_ASE_SMARTMIPS    0x00000080 /* SmartMIPS ASE.  */
1209 #define AFL_ASE_VIRT         0x00000100 /* VZ ASE.  */
1210 #define AFL_ASE_MSA          0x00000200 /* MSA ASE.  */
1211 #define AFL_ASE_MIPS16       0x00000400 /* MIPS16 ASE.  */
1212 #define AFL_ASE_MICROMIPS    0x00000800 /* MICROMIPS ASE.  */
1213 #define AFL_ASE_XPA          0x00001000 /* XPA ASE.  */
1214
1215 /* Values for the isa_ext word of an ABI flags structure.  */
1216
1217 #define AFL_EXT_XLR           1  /* RMI Xlr instruction.  */
1218 #define AFL_EXT_OCTEON2       2  /* Cavium Networks Octeon2.  */
1219 #define AFL_EXT_OCTEONP       3  /* Cavium Networks OcteonP.  */
1220 #define AFL_EXT_LOONGSON_3A   4  /* Loongson 3A.  */
1221 #define AFL_EXT_OCTEON        5  /* Cavium Networks Octeon.  */
1222 #define AFL_EXT_5900          6  /* MIPS R5900 instruction.  */
1223 #define AFL_EXT_4650          7  /* MIPS R4650 instruction.  */
1224 #define AFL_EXT_4010          8  /* LSI R4010 instruction.  */
1225 #define AFL_EXT_4100          9  /* NEC VR4100 instruction.  */
1226 #define AFL_EXT_3900         10  /* Toshiba R3900 instruction.  */
1227 #define AFL_EXT_10000        11  /* MIPS R10000 instruction.  */
1228 #define AFL_EXT_SB1          12  /* Broadcom SB-1 instruction.  */
1229 #define AFL_EXT_4111         13  /* NEC VR4111/VR4181 instruction.  */
1230 #define AFL_EXT_4120         14  /* NEC VR4120 instruction.  */
1231 #define AFL_EXT_5400         15  /* NEC VR5400 instruction.  */
1232 #define AFL_EXT_5500         16  /* NEC VR5500 instruction.  */
1233 #define AFL_EXT_LOONGSON_2E  17  /* ST Microelectronics Loongson 2E.  */
1234 #define AFL_EXT_LOONGSON_2F  18  /* ST Microelectronics Loongson 2F.  */
1235
1236 /* Masks for the flags1 word of an ABI flags structure.  */
1237 #define AFL_FLAGS1_ODDSPREG   1  /* Uses odd single-precision registers.  */
1238
1239 extern unsigned int bfd_mips_isa_ext (bfd *);
1240 \f
1241
1242 /* Object attribute tags.  */
1243 enum
1244 {
1245   /* 0-3 are generic.  */
1246
1247   /* Floating-point ABI used by this object file.  */
1248   Tag_GNU_MIPS_ABI_FP = 4,
1249
1250   /* MSA ABI used by this object file.  */
1251   Tag_GNU_MIPS_ABI_MSA = 8,
1252 };
1253
1254 /* Object attribute values.  */
1255 enum
1256 {
1257   /* Values defined for Tag_GNU_MIPS_ABI_FP.  */
1258
1259   /* Not tagged or not using any ABIs affected by the differences.  */
1260   Val_GNU_MIPS_ABI_FP_ANY = 0,
1261
1262   /* Using hard-float -mdouble-float.  */
1263   Val_GNU_MIPS_ABI_FP_DOUBLE = 1,
1264
1265   /* Using hard-float -msingle-float.  */
1266   Val_GNU_MIPS_ABI_FP_SINGLE = 2,
1267
1268   /* Using soft-float.  */
1269   Val_GNU_MIPS_ABI_FP_SOFT = 3,
1270
1271   /* Using -mips32r2 -mfp64.  */
1272   Val_GNU_MIPS_ABI_FP_OLD_64 = 4,
1273
1274   /* Using -mfpxx */
1275   Val_GNU_MIPS_ABI_FP_XX = 5,
1276
1277   /* Using -mips32r2 -mfp64.  */
1278   Val_GNU_MIPS_ABI_FP_64 = 6,
1279
1280   /* Using -mips32r2 -mfp64 -mno-odd-spreg.  */
1281   Val_GNU_MIPS_ABI_FP_64A = 7,
1282
1283   /* Values defined for Tag_GNU_MIPS_ABI_MSA.  */
1284
1285   /* Not tagged or not using any ABIs affected by the differences.  */
1286   Val_GNU_MIPS_ABI_MSA_ANY = 0,
1287
1288   /* Using 128-bit MSA.  */
1289   Val_GNU_MIPS_ABI_MSA_128 = 1,
1290 };
1291
1292 #endif /* _ELF_MIPS_H */