include/elf/mips.h

   1 /* MIPS ELF support for BFD.
   2    Copyright (C) 1993-2016 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 #ifdef __cplusplus
  34 extern "C" {
  35 #endif
  36
  37 /* Relocation types.  */
  38 START_RELOC_NUMBERS (elf_mips_reloc_type)
  39   RELOC_NUMBER (R_MIPS_NONE, 0)
  40   RELOC_NUMBER (R_MIPS_16, 1)
  41   RELOC_NUMBER (R_MIPS_32, 2)           /* In Elf 64: alias R_MIPS_ADD */
  42   RELOC_NUMBER (R_MIPS_REL32, 3)        /* In Elf 64: alias R_MIPS_REL */
  43   RELOC_NUMBER (R_MIPS_26, 4)
  44   RELOC_NUMBER (R_MIPS_HI16, 5)
  45   RELOC_NUMBER (R_MIPS_LO16, 6)
  46   RELOC_NUMBER (R_MIPS_GPREL16, 7)      /* In Elf 64: alias R_MIPS_GPREL */
  47   RELOC_NUMBER (R_MIPS_LITERAL, 8)
  48   RELOC_NUMBER (R_MIPS_GOT16, 9)        /* In Elf 64: alias R_MIPS_GOT */
  49   RELOC_NUMBER (R_MIPS_PC16, 10)
  50   RELOC_NUMBER (R_MIPS_CALL16, 11)      /* In Elf 64: alias R_MIPS_CALL */
  51   RELOC_NUMBER (R_MIPS_GPREL32, 12)
  52   /* The remaining relocs are defined on Irix, although they are not
  53      in the MIPS ELF ABI.  */
  54   RELOC_NUMBER (R_MIPS_UNUSED1, 13)
  55   RELOC_NUMBER (R_MIPS_UNUSED2, 14)
  56   RELOC_NUMBER (R_MIPS_UNUSED3, 15)
  57   RELOC_NUMBER (R_MIPS_SHIFT5, 16)
  58   RELOC_NUMBER (R_MIPS_SHIFT6, 17)
  59   RELOC_NUMBER (R_MIPS_64, 18)
  60   RELOC_NUMBER (R_MIPS_GOT_DISP, 19)
  61   RELOC_NUMBER (R_MIPS_GOT_PAGE, 20)
  62   RELOC_NUMBER (R_MIPS_GOT_OFST, 21)
  63   RELOC_NUMBER (R_MIPS_GOT_HI16, 22)
  64   RELOC_NUMBER (R_MIPS_GOT_LO16, 23)
  65   RELOC_NUMBER (R_MIPS_SUB, 24)
  66   RELOC_NUMBER (R_MIPS_INSERT_A, 25)
  67   RELOC_NUMBER (R_MIPS_INSERT_B, 26)
  68   RELOC_NUMBER (R_MIPS_DELETE, 27)
  69   RELOC_NUMBER (R_MIPS_HIGHER, 28)
  70   RELOC_NUMBER (R_MIPS_HIGHEST, 29)
  71   RELOC_NUMBER (R_MIPS_CALL_HI16, 30)
  72   RELOC_NUMBER (R_MIPS_CALL_LO16, 31)
  73   RELOC_NUMBER (R_MIPS_SCN_DISP, 32)
  74   RELOC_NUMBER (R_MIPS_REL16, 33)
  75   RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34)
  76   RELOC_NUMBER (R_MIPS_PJUMP, 35)
  77   RELOC_NUMBER (R_MIPS_RELGOT, 36)
  78   RELOC_NUMBER (R_MIPS_JALR, 37)
  79   /* TLS relocations.  */
  80   RELOC_NUMBER (R_MIPS_TLS_DTPMOD32, 38)
  81   RELOC_NUMBER (R_MIPS_TLS_DTPREL32, 39)
  82   RELOC_NUMBER (R_MIPS_TLS_DTPMOD64, 40)
  83   RELOC_NUMBER (R_MIPS_TLS_DTPREL64, 41)
  84   RELOC_NUMBER (R_MIPS_TLS_GD, 42)
  85   RELOC_NUMBER (R_MIPS_TLS_LDM, 43)
  86   RELOC_NUMBER (R_MIPS_TLS_DTPREL_HI16, 44)
  87   RELOC_NUMBER (R_MIPS_TLS_DTPREL_LO16, 45)
  88   RELOC_NUMBER (R_MIPS_TLS_GOTTPREL, 46)
  89   RELOC_NUMBER (R_MIPS_TLS_TPREL32, 47)
  90   RELOC_NUMBER (R_MIPS_TLS_TPREL64, 48)
  91   RELOC_NUMBER (R_MIPS_TLS_TPREL_HI16, 49)
  92   RELOC_NUMBER (R_MIPS_TLS_TPREL_LO16, 50)
  93   RELOC_NUMBER (R_MIPS_GLOB_DAT, 51)
  94   /* Space to grow */
  95   RELOC_NUMBER (R_MIPS_PC21_S2, 60)
  96   RELOC_NUMBER (R_MIPS_PC26_S2, 61)
  97   RELOC_NUMBER (R_MIPS_PC18_S3, 62)
  98   RELOC_NUMBER (R_MIPS_PC19_S2, 63)
  99   RELOC_NUMBER (R_MIPS_PCHI16, 64)
 100   RELOC_NUMBER (R_MIPS_PCLO16, 65)
 101   FAKE_RELOC (R_MIPS_max, 66)
 102   /* These relocs are used for the mips16.  */
 103   FAKE_RELOC (R_MIPS16_min, 100)
 104   RELOC_NUMBER (R_MIPS16_26, 100)
 105   RELOC_NUMBER (R_MIPS16_GPREL, 101)
 106   RELOC_NUMBER (R_MIPS16_GOT16, 102)
 107   RELOC_NUMBER (R_MIPS16_CALL16, 103)
 108   RELOC_NUMBER (R_MIPS16_HI16, 104)
 109   RELOC_NUMBER (R_MIPS16_LO16, 105)
 110   RELOC_NUMBER (R_MIPS16_TLS_GD, 106)
 111   RELOC_NUMBER (R_MIPS16_TLS_LDM, 107)
 112   RELOC_NUMBER (R_MIPS16_TLS_DTPREL_HI16, 108)
 113   RELOC_NUMBER (R_MIPS16_TLS_DTPREL_LO16, 109)
 114   RELOC_NUMBER (R_MIPS16_TLS_GOTTPREL, 110)
 115   RELOC_NUMBER (R_MIPS16_TLS_TPREL_HI16, 111)
 116   RELOC_NUMBER (R_MIPS16_TLS_TPREL_LO16, 112)
 117   FAKE_RELOC (R_MIPS16_max, 113)
 118   /* These relocations are specific to VxWorks.  */
 119   RELOC_NUMBER (R_MIPS_COPY, 126)
 120   RELOC_NUMBER (R_MIPS_JUMP_SLOT, 127)
 121
 122   /* These relocations are specific to microMIPS.  */
 123   FAKE_RELOC (R_MICROMIPS_min, 130)
 124   RELOC_NUMBER (R_MICROMIPS_26_S1, 133)
 125   RELOC_NUMBER (R_MICROMIPS_HI16, 134)
 126   RELOC_NUMBER (R_MICROMIPS_LO16, 135)
 127   RELOC_NUMBER (R_MICROMIPS_GPREL16, 136)       /* In Elf 64:
 128                                                    alias R_MICROMIPS_GPREL */
 129   RELOC_NUMBER (R_MICROMIPS_LITERAL, 137)
 130   RELOC_NUMBER (R_MICROMIPS_GOT16, 138)         /* In Elf 64:
 131                                                    alias R_MICROMIPS_GOT */
 132   RELOC_NUMBER (R_MICROMIPS_PC7_S1, 139)
 133   RELOC_NUMBER (R_MICROMIPS_PC10_S1, 140)
 134   RELOC_NUMBER (R_MICROMIPS_PC16_S1, 141)
 135   RELOC_NUMBER (R_MICROMIPS_CALL16, 142)        /* In Elf 64:
 136                                                    alias R_MICROMIPS_CALL */
 137   RELOC_NUMBER (R_MICROMIPS_GOT_DISP, 145)
 138   RELOC_NUMBER (R_MICROMIPS_GOT_PAGE, 146)
 139   RELOC_NUMBER (R_MICROMIPS_GOT_OFST, 147)
 140   RELOC_NUMBER (R_MICROMIPS_GOT_HI16, 148)
 141   RELOC_NUMBER (R_MICROMIPS_GOT_LO16, 149)
 142   RELOC_NUMBER (R_MICROMIPS_SUB, 150)
 143   RELOC_NUMBER (R_MICROMIPS_HIGHER, 151)
 144   RELOC_NUMBER (R_MICROMIPS_HIGHEST, 152)
 145   RELOC_NUMBER (R_MICROMIPS_CALL_HI16, 153)
 146   RELOC_NUMBER (R_MICROMIPS_CALL_LO16, 154)
 147   RELOC_NUMBER (R_MICROMIPS_SCN_DISP, 155)
 148   RELOC_NUMBER (R_MICROMIPS_JALR, 156)
 149   RELOC_NUMBER (R_MICROMIPS_HI0_LO16, 157)
 150   /* TLS relocations.  */
 151   RELOC_NUMBER (R_MICROMIPS_TLS_GD, 162)
 152   RELOC_NUMBER (R_MICROMIPS_TLS_LDM, 163)
 153   RELOC_NUMBER (R_MICROMIPS_TLS_DTPREL_HI16, 164)
 154   RELOC_NUMBER (R_MICROMIPS_TLS_DTPREL_LO16, 165)
 155   RELOC_NUMBER (R_MICROMIPS_TLS_GOTTPREL, 166)
 156   RELOC_NUMBER (R_MICROMIPS_TLS_TPREL_HI16, 169)
 157   RELOC_NUMBER (R_MICROMIPS_TLS_TPREL_LO16, 170)
 158   /* microMIPS GP- and PC-relative relocations. */
 159   RELOC_NUMBER (R_MICROMIPS_GPREL7_S2, 172)
 160   RELOC_NUMBER (R_MICROMIPS_PC23_S2, 173)
 161   FAKE_RELOC (R_MICROMIPS_max, 174)
 162
 163   /* This was a GNU extension used by embedded-PIC.  It was co-opted by
 164      mips-linux for exception-handling data.  GCC stopped using it in
 165      May, 2004, then started using it again for compact unwind tables.  */
 166   RELOC_NUMBER (R_MIPS_PC32, 248)
 167   RELOC_NUMBER (R_MIPS_EH, 249)
 168   /* FIXME: this relocation is used internally by gas.  */
 169   RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250)
 170   /* These are GNU extensions to enable C++ vtable garbage collection.  */
 171   RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253)
 172   RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254)
 173 END_RELOC_NUMBERS (R_MIPS_maxext)
 174
 175 /* Processor specific flags for the ELF header e_flags field.  */
 176
 177 /* At least one .noreorder directive appears in the source.  */
 178 #define EF_MIPS_NOREORDER       0x00000001
 179
 180 /* File contains position independent code.  */
 181 #define EF_MIPS_PIC             0x00000002
 182
 183 /* Code in file uses the standard calling sequence for calling
 184    position independent code.  */
 185 #define EF_MIPS_CPIC            0x00000004
 186
 187 /* ???  Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a.  */
 188 #define EF_MIPS_XGOT            0x00000008
 189
 190 /* Code in file uses UCODE (obsolete) */
 191 #define EF_MIPS_UCODE           0x00000010
 192
 193 /* Code in file uses new ABI (-n32 on Irix 6).  */
 194 #define EF_MIPS_ABI2            0x00000020
 195
 196 /* Process the .MIPS.options section first by ld */
 197 #define EF_MIPS_OPTIONS_FIRST   0x00000080
 198
 199 /* Indicates code compiled for a 64-bit machine in 32-bit mode
 200    (regs are 32-bits wide).  */
 201 #define EF_MIPS_32BITMODE       0x00000100
 202
 203 /* 32-bit machine but FP registers are 64 bit (-mfp64).  */
 204 #define EF_MIPS_FP64            0x00000200
 205
 206 /* Code in file uses the IEEE 754-2008 NaN encoding convention.  */
 207 #define EF_MIPS_NAN2008         0x00000400
 208
 209 /* Architectural Extensions used by this file */
 210 #define EF_MIPS_ARCH_ASE        0x0f000000
 211
 212 /* Use MDMX multimedia extensions */
 213 #define EF_MIPS_ARCH_ASE_MDMX   0x08000000
 214
 215 /* Use MIPS-16 ISA extensions */
 216 #define EF_MIPS_ARCH_ASE_M16    0x04000000
 217
 218 /* Use MICROMIPS ISA extensions.  */
 219 #define EF_MIPS_ARCH_ASE_MICROMIPS      0x02000000
 220
 221 /* Four bit MIPS architecture field.  */
 222 #define EF_MIPS_ARCH            0xf0000000
 223
 224 /* -mips1 code.  */
 225 #define E_MIPS_ARCH_1           0x00000000
 226
 227 /* -mips2 code.  */
 228 #define E_MIPS_ARCH_2           0x10000000
 229
 230 /* -mips3 code.  */
 231 #define E_MIPS_ARCH_3           0x20000000
 232
 233 /* -mips4 code.  */
 234 #define E_MIPS_ARCH_4           0x30000000
 235
 236 /* -mips5 code.  */
 237 #define E_MIPS_ARCH_5           0x40000000
 238
 239 /* -mips32 code.  */
 240 #define E_MIPS_ARCH_32          0x50000000
 241
 242 /* -mips64 code.  */
 243 #define E_MIPS_ARCH_64          0x60000000
 244
 245 /* -mips32r2 code.  */
 246 #define E_MIPS_ARCH_32R2        0x70000000
 247
 248 /* -mips64r2 code.  */
 249 #define E_MIPS_ARCH_64R2        0x80000000
 250
 251 /* -mips32r6 code.  */
 252 #define E_MIPS_ARCH_32R6        0x90000000
 253
 254 /* -mips64r6 code.  */
 255 #define E_MIPS_ARCH_64R6        0xa0000000
 256
 257 /* The ABI of the file.  Also see EF_MIPS_ABI2 above. */
 258 #define EF_MIPS_ABI             0x0000F000
 259
 260 /* The original o32 abi. */
 261 #define E_MIPS_ABI_O32          0x00001000
 262
 263 /* O32 extended to work on 64 bit architectures */
 264 #define E_MIPS_ABI_O64          0x00002000
 265
 266 /* EABI in 32 bit mode */
 267 #define E_MIPS_ABI_EABI32       0x00003000
 268
 269 /* EABI in 64 bit mode */
 270 #define E_MIPS_ABI_EABI64       0x00004000
 271
 272
 273 /* Machine variant if we know it.  This field was invented at Cygnus,
 274    but it is hoped that other vendors will adopt it.  If some standard
 275    is developed, this code should be changed to follow it. */
 276
 277 #define EF_MIPS_MACH            0x00FF0000
 278
 279 /* Cygnus is choosing values between 80 and 9F;
 280    00 - 7F should be left for a future standard;
 281    the rest are open. */
 282
 283 #define E_MIPS_MACH_3900        0x00810000
 284 #define E_MIPS_MACH_4010        0x00820000
 285 #define E_MIPS_MACH_4100        0x00830000
 286 #define E_MIPS_MACH_4650        0x00850000
 287 #define E_MIPS_MACH_4120        0x00870000
 288 #define E_MIPS_MACH_4111        0x00880000
 289 #define E_MIPS_MACH_SB1         0x008a0000
 290 #define E_MIPS_MACH_OCTEON      0x008b0000
 291 #define E_MIPS_MACH_XLR         0x008c0000
 292 #define E_MIPS_MACH_OCTEON2     0x008d0000
 293 #define E_MIPS_MACH_OCTEON3     0x008e0000
 294 #define E_MIPS_MACH_5400        0x00910000
 295 #define E_MIPS_MACH_5900        0x00920000
 296 #define E_MIPS_MACH_5500        0x00980000
 297 #define E_MIPS_MACH_9000        0x00990000
 298 #define E_MIPS_MACH_LS2E        0x00A00000
 299 #define E_MIPS_MACH_LS2F        0x00A10000
 300 #define E_MIPS_MACH_LS3A        0x00A20000
 301 \f
 302 /* Processor specific section indices.  These sections do not actually
 303    exist.  Symbols with a st_shndx field corresponding to one of these
 304    values have a special meaning.  */
 305
 306 /* Defined and allocated common symbol.  Value is virtual address.  If
 307    relocated, alignment must be preserved.  */
 308 #define SHN_MIPS_ACOMMON        SHN_LORESERVE
 309
 310 /* Defined and allocated text symbol.  Value is virtual address.
 311    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 312 #define SHN_MIPS_TEXT           (SHN_LORESERVE + 1)
 313
 314 /* Defined and allocated data symbol.  Value is virtual address.
 315    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 316 #define SHN_MIPS_DATA           (SHN_LORESERVE + 2)
 317
 318 /* Small common symbol.  */
 319 #define SHN_MIPS_SCOMMON        (SHN_LORESERVE + 3)
 320
 321 /* Small undefined symbol.  */
 322 #define SHN_MIPS_SUNDEFINED     (SHN_LORESERVE + 4)
 323 \f
 324 /* Processor specific section types.  */
 325
 326 /* Section contains the set of dynamic shared objects used when
 327    statically linking.  */
 328 #define SHT_MIPS_LIBLIST        0x70000000
 329
 330 /* I'm not sure what this is, but it's used on Irix 5.  */
 331 #define SHT_MIPS_MSYM           0x70000001
 332
 333 /* Section contains list of symbols whose definitions conflict with
 334    symbols defined in shared objects.  */
 335 #define SHT_MIPS_CONFLICT       0x70000002
 336
 337 /* Section contains the global pointer table.  */
 338 #define SHT_MIPS_GPTAB          0x70000003
 339
 340 /* Section contains microcode information.  The exact format is
 341    unspecified.  */
 342 #define SHT_MIPS_UCODE          0x70000004
 343
 344 /* Section contains some sort of debugging information.  The exact
 345    format is unspecified.  It's probably ECOFF symbols.  */
 346 #define SHT_MIPS_DEBUG          0x70000005
 347
 348 /* Section contains register usage information.  */
 349 #define SHT_MIPS_REGINFO        0x70000006
 350
 351 /* ??? */
 352 #define SHT_MIPS_PACKAGE        0x70000007
 353
 354 /* ??? */
 355 #define SHT_MIPS_PACKSYM        0x70000008
 356
 357 /* ??? */
 358 #define SHT_MIPS_RELD           0x70000009
 359
 360 /* Section contains interface information.  */
 361 #define SHT_MIPS_IFACE          0x7000000b
 362
 363 /* Section contains description of contents of another section.  */
 364 #define SHT_MIPS_CONTENT        0x7000000c
 365
 366 /* Section contains miscellaneous options.  */
 367 #define SHT_MIPS_OPTIONS        0x7000000d
 368
 369 /* ??? */
 370 #define SHT_MIPS_SHDR           0x70000010
 371
 372 /* ??? */
 373 #define SHT_MIPS_FDESC          0x70000011
 374
 375 /* ??? */
 376 #define SHT_MIPS_EXTSYM         0x70000012
 377
 378 /* ??? */
 379 #define SHT_MIPS_DENSE          0x70000013
 380
 381 /* ??? */
 382 #define SHT_MIPS_PDESC          0x70000014
 383
 384 /* ??? */
 385 #define SHT_MIPS_LOCSYM         0x70000015
 386
 387 /* ??? */
 388 #define SHT_MIPS_AUXSYM         0x70000016
 389
 390 /* ??? */
 391 #define SHT_MIPS_OPTSYM         0x70000017
 392
 393 /* ??? */
 394 #define SHT_MIPS_LOCSTR         0x70000018
 395
 396 /* ??? */
 397 #define SHT_MIPS_LINE           0x70000019
 398
 399 /* ??? */
 400 #define SHT_MIPS_RFDESC         0x7000001a
 401
 402 /* Delta C++: symbol table */
 403 #define SHT_MIPS_DELTASYM       0x7000001b
 404
 405 /* Delta C++: instance table */
 406 #define SHT_MIPS_DELTAINST      0x7000001c
 407
 408 /* Delta C++: class table */
 409 #define SHT_MIPS_DELTACLASS     0x7000001d
 410
 411 /* DWARF debugging section.  */
 412 #define SHT_MIPS_DWARF          0x7000001e
 413
 414 /* Delta C++: declarations */
 415 #define SHT_MIPS_DELTADECL      0x7000001f
 416
 417 /* List of libraries the binary depends on.  Includes a time stamp, version
 418    number.  */
 419 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 420
 421 /* Events section.  */
 422 #define SHT_MIPS_EVENTS         0x70000021
 423
 424 /* ??? */
 425 #define SHT_MIPS_TRANSLATE      0x70000022
 426
 427 /* Special pixie sections */
 428 #define SHT_MIPS_PIXIE          0x70000023
 429
 430 /* Address translation table (for debug info) */
 431 #define SHT_MIPS_XLATE          0x70000024
 432
 433 /* SGI internal address translation table (for debug info) */
 434 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 435
 436 /* Intermediate code */
 437 #define SHT_MIPS_WHIRL          0x70000026
 438
 439 /* C++ exception handling region info */
 440 #define SHT_MIPS_EH_REGION      0x70000027
 441
 442 /* Obsolete address translation table (for debug info) */
 443 #define SHT_MIPS_XLATE_OLD      0x70000028
 444
 445 /* Runtime procedure descriptor table exception information (ucode) ??? */
 446 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 447
 448 /* ABI related flags section.  */
 449 #define SHT_MIPS_ABIFLAGS       0x7000002a
 450
 451 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 452    following structure.  The sh_link field is the section index of the
 453    string table.  The sh_info field is the number of entries in the
 454    section.  */
 455 typedef struct
 456 {
 457   /* String table index for name of shared object.  */
 458   unsigned long l_name;
 459   /* Time stamp.  */
 460   unsigned long l_time_stamp;
 461   /* Checksum of symbol names and common sizes.  */
 462   unsigned long l_checksum;
 463   /* String table index for version.  */
 464   unsigned long l_version;
 465   /* Flags.  */
 466   unsigned long l_flags;
 467 } Elf32_Lib;
 468
 469 /* The external version of Elf32_Lib.  */
 470 typedef struct
 471 {
 472   unsigned char l_name[4];
 473   unsigned char l_time_stamp[4];
 474   unsigned char l_checksum[4];
 475   unsigned char l_version[4];
 476   unsigned char l_flags[4];
 477 } Elf32_External_Lib;
 478
 479 /* The l_flags field of an Elf32_Lib structure may contain the
 480    following flags.  */
 481
 482 /* Require an exact match at runtime.  */
 483 #define LL_EXACT_MATCH          0x00000001
 484
 485 /* Ignore version incompatibilities at runtime.  */
 486 #define LL_IGNORE_INT_VER       0x00000002
 487
 488 /* Require matching minor version number.  */
 489 #define LL_REQUIRE_MINOR        0x00000004
 490
 491 /* ??? */
 492 #define LL_EXPORTS              0x00000008
 493
 494 /* Delay loading of this library until really needed.  */
 495 #define LL_DELAY_LOAD           0x00000010
 496
 497 /* ??? Delta C++ stuff ??? */
 498 #define LL_DELTA                0x00000020
 499
 500
 501 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 502    .dynsym section.  Each element has the following type.  */
 503 typedef unsigned long Elf32_Conflict;
 504 typedef unsigned char Elf32_External_Conflict[4];
 505
 506 typedef unsigned long Elf64_Conflict;
 507 typedef unsigned char Elf64_External_Conflict[8];
 508
 509 /* A section of type SHT_MIPS_GPTAB contains information about how
 510    much GP space would be required for different -G arguments.  This
 511    information is only used so that the linker can provide informative
 512    suggestions as to the best -G value to use.  The sh_info field is
 513    the index of the section for which this information applies.  The
 514    contents of the section are an array of the following union.  The
 515    first element uses the gt_header field.  The remaining elements use
 516    the gt_entry field.  */
 517 typedef union
 518 {
 519   struct
 520     {
 521       /* -G value actually used for this object file.  */
 522       unsigned long gt_current_g_value;
 523       /* Unused.  */
 524       unsigned long gt_unused;
 525     } gt_header;
 526   struct
 527     {
 528       /* If this -G argument has been used...  */
 529       unsigned long gt_g_value;
 530       /* ...this many GP section bytes would be required.  */
 531       unsigned long gt_bytes;
 532     } gt_entry;
 533 } Elf32_gptab;
 534
 535 /* The external version of Elf32_gptab.  */
 536
 537 typedef union
 538 {
 539   struct
 540     {
 541       unsigned char gt_current_g_value[4];
 542       unsigned char gt_unused[4];
 543     } gt_header;
 544   struct
 545     {
 546       unsigned char gt_g_value[4];
 547       unsigned char gt_bytes[4];
 548     } gt_entry;
 549 } Elf32_External_gptab;
 550
 551 /* A section of type SHT_MIPS_REGINFO contains the following
 552    structure.  */
 553 typedef struct
 554 {
 555   /* Mask of general purpose registers used.  */
 556   unsigned long ri_gprmask;
 557   /* Mask of co-processor registers used.  */
 558   unsigned long ri_cprmask[4];
 559   /* GP register value for this object file.  */
 560   long ri_gp_value;
 561 } Elf32_RegInfo;
 562
 563 /* The external version of the Elf_RegInfo structure.  */
 564 typedef struct
 565 {
 566   unsigned char ri_gprmask[4];
 567   unsigned char ri_cprmask[4][4];
 568   unsigned char ri_gp_value[4];
 569 } Elf32_External_RegInfo;
 570
 571 /* MIPS ELF .reginfo swapping routines.  */
 572 extern void bfd_mips_elf32_swap_reginfo_in
 573   (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
 574 extern void bfd_mips_elf32_swap_reginfo_out
 575   (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
 576 \f
 577 /* Processor specific section flags.  */
 578
 579 /* This section must be in the global data area.  */
 580 #define SHF_MIPS_GPREL          0x10000000
 581
 582 /* This section should be merged.  */
 583 #define SHF_MIPS_MERGE          0x20000000
 584
 585 /* This section contains address data of size implied by section
 586    element size.  */
 587 #define SHF_MIPS_ADDR           0x40000000
 588
 589 /* This section contains string data.  */
 590 #define SHF_MIPS_STRING         0x80000000
 591
 592 /* This section may not be stripped.  */
 593 #define SHF_MIPS_NOSTRIP        0x08000000
 594
 595 /* This section is local to threads.  */
 596 #define SHF_MIPS_LOCAL          0x04000000
 597
 598 /* Linker should generate implicit weak names for this section.  */
 599 #define SHF_MIPS_NAMES          0x02000000
 600
 601 /* Section contais text/data which may be replicated in other sections.
 602    Linker should retain only one copy.  */
 603 #define SHF_MIPS_NODUPES        0x01000000
 604 \f
 605 /* Processor specific program header types.  */
 606
 607 /* Register usage information.  Identifies one .reginfo section.  */
 608 #define PT_MIPS_REGINFO         0x70000000
 609
 610 /* Runtime procedure table.  */
 611 #define PT_MIPS_RTPROC          0x70000001
 612
 613 /* .MIPS.options section.  */
 614 #define PT_MIPS_OPTIONS         0x70000002
 615
 616 /* Records ABI related flags.  */
 617 #define PT_MIPS_ABIFLAGS        0x70000003
 618 \f
 619 /* Processor specific dynamic array tags.  */
 620
 621 /* 32 bit version number for runtime linker interface.  */
 622 #define DT_MIPS_RLD_VERSION     0x70000001
 623
 624 /* Time stamp.  */
 625 #define DT_MIPS_TIME_STAMP      0x70000002
 626
 627 /* Checksum of external strings and common sizes.  */
 628 #define DT_MIPS_ICHECKSUM       0x70000003
 629
 630 /* Index of version string in string table.  */
 631 #define DT_MIPS_IVERSION        0x70000004
 632
 633 /* 32 bits of flags.  */
 634 #define DT_MIPS_FLAGS           0x70000005
 635
 636 /* Base address of the segment.  */
 637 #define DT_MIPS_BASE_ADDRESS    0x70000006
 638
 639 /* ??? */
 640 #define DT_MIPS_MSYM            0x70000007
 641
 642 /* Address of .conflict section.  */
 643 #define DT_MIPS_CONFLICT        0x70000008
 644
 645 /* Address of .liblist section.  */
 646 #define DT_MIPS_LIBLIST         0x70000009
 647
 648 /* Number of local global offset table entries.  */
 649 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 650
 651 /* Number of entries in the .conflict section.  */
 652 #define DT_MIPS_CONFLICTNO      0x7000000b
 653
 654 /* Number of entries in the .liblist section.  */
 655 #define DT_MIPS_LIBLISTNO       0x70000010
 656
 657 /* Number of entries in the .dynsym section.  */
 658 #define DT_MIPS_SYMTABNO        0x70000011
 659
 660 /* Index of first external dynamic symbol not referenced locally.  */
 661 #define DT_MIPS_UNREFEXTNO      0x70000012
 662
 663 /* Index of first dynamic symbol in global offset table.  */
 664 #define DT_MIPS_GOTSYM          0x70000013
 665
 666 /* Number of page table entries in global offset table.  */
 667 #define DT_MIPS_HIPAGENO        0x70000014
 668
 669 /* Address of run time loader map, used for debugging.  */
 670 #define DT_MIPS_RLD_MAP         0x70000016
 671
 672 /* Delta C++ class definition.  */
 673 #define DT_MIPS_DELTA_CLASS     0x70000017
 674
 675 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 676 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 677
 678 /* Delta C++ class instances.  */
 679 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 680
 681 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 682 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 683
 684 /* Delta relocations.  */
 685 #define DT_MIPS_DELTA_RELOC     0x7000001b
 686
 687 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 688 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 689
 690 /* Delta symbols that Delta relocations refer to.  */
 691 #define DT_MIPS_DELTA_SYM       0x7000001d
 692
 693 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 694 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 695
 696 /* Delta symbols that hold class declarations.  */
 697 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 698
 699 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 700 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 701
 702 /* Flags indicating information about C++ flavor.  */
 703 #define DT_MIPS_CXX_FLAGS       0x70000022
 704
 705 /* Pixie information (???).  */
 706 #define DT_MIPS_PIXIE_INIT      0x70000023
 707
 708 /* Address of .MIPS.symlib */
 709 #define DT_MIPS_SYMBOL_LIB      0x70000024
 710
 711 /* The GOT index of the first PTE for a segment */
 712 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 713
 714 /* The GOT index of the first PTE for a local symbol */
 715 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 716
 717 /* The GOT index of the first PTE for a hidden symbol */
 718 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 719
 720 /* The GOT index of the first PTE for a protected symbol */
 721 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 722
 723 /* Address of `.MIPS.options'.  */
 724 #define DT_MIPS_OPTIONS         0x70000029
 725
 726 /* Address of `.interface'.  */
 727 #define DT_MIPS_INTERFACE       0x7000002a
 728
 729 /* ??? */
 730 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 731
 732 /* Size of the .interface section.  */
 733 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 734
 735 /* Size of rld_text_resolve function stored in the GOT.  */
 736 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 737
 738 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 739 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 740
 741 /* Size of compact relocation section (O32).  */
 742 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 743
 744 /* GP value for auxiliary GOTs.  */
 745 #define DT_MIPS_GP_VALUE        0x70000030
 746
 747 /* Address of auxiliary .dynamic.  */
 748 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 749
 750 /* Address of the base of the PLTGOT.  */
 751 #define DT_MIPS_PLTGOT         0x70000032
 752
 753 /* Points to the base of a writable PLT.  */
 754 #define DT_MIPS_RWPLT          0x70000034
 755
 756 /* Relative offset of run time loader map, used for debugging.  */
 757 #define DT_MIPS_RLD_MAP_REL    0x70000035
 758 \f
 759 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 760
 761 /* No flags.  */
 762 #define RHF_NONE                0x00000000
 763
 764 /* Uses shortcut pointers.  */
 765 #define RHF_QUICKSTART          0x00000001
 766
 767 /* Hash size is not a power of two.  */
 768 #define RHF_NOTPOT              0x00000002
 769
 770 /* Ignore LD_LIBRARY_PATH.  */
 771 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
 772
 773 /* DSO address may not be relocated. */
 774 #define RHF_NO_MOVE             0x00000008
 775
 776 /* SGI specific features. */
 777 #define RHF_SGI_ONLY            0x00000010
 778
 779 /* Guarantee that .init will finish executing before any non-init
 780    code in DSO is called. */
 781 #define RHF_GUARANTEE_INIT         0x00000020
 782
 783 /* Contains Delta C++ code. */
 784 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 785
 786 /* Guarantee that .init will start executing before any non-init
 787    code in DSO is called. */
 788 #define RHF_GUARANTEE_START_INIT   0x00000080
 789
 790 /* Generated by pixie. */
 791 #define RHF_PIXIE                  0x00000100
 792
 793 /* Delay-load DSO by default. */
 794 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 795
 796 /* Object may be requickstarted */
 797 #define RHF_REQUICKSTART           0x00000400
 798
 799 /* Object has been requickstarted */
 800 #define RHF_REQUICKSTARTED         0x00000800
 801
 802 /* Generated by cord. */
 803 #define RHF_CORD                   0x00001000
 804
 805 /* Object contains no unresolved undef symbols. */
 806 #define RHF_NO_UNRES_UNDEF         0x00002000
 807
 808 /* Symbol table is in a safe order. */
 809 #define RHF_RLD_ORDER_SAFE         0x00004000
 810 \f
 811 /* Special values for the st_other field in the symbol table.  These
 812    are used in an Irix 5 dynamic symbol table.  */
 813
 814 #define STO_DEFAULT             STV_DEFAULT
 815 #define STO_INTERNAL            STV_INTERNAL
 816 #define STO_HIDDEN              STV_HIDDEN
 817 #define STO_PROTECTED           STV_PROTECTED
 818
 819 /* Two topmost bits denote the MIPS ISA for .text symbols:
 820    + 00 -- standard MIPS code,
 821    + 10 -- microMIPS code,
 822    + 11 -- MIPS16 code; requires the following two bits to be set too.
 823    Note that one of the MIPS16 bits overlaps with STO_MIPS_PIC.  See below
 824    for details.  */
 825 #define STO_MIPS_ISA            (3 << 6)
 826
 827 /* The mask spanning the rest of MIPS psABI flags.  At most one is expected
 828    to be set except for STO_MIPS16.  */
 829 #define STO_MIPS_FLAGS          (~(STO_MIPS_ISA | ELF_ST_VISIBILITY (-1)))
 830
 831 /* The MIPS psABI was updated in 2008 with support for PLTs and copy
 832    relocs.  There are therefore two types of nonzero SHN_UNDEF functions:
 833    PLT entries and traditional MIPS lazy binding stubs.  We mark the former
 834    with STO_MIPS_PLT to distinguish them from the latter.  */
 835 #define STO_MIPS_PLT            0x8
 836 #define ELF_ST_IS_MIPS_PLT(other)                                       \
 837   ((ELF_ST_IS_MIPS16 (other)                                            \
 838     ? ((other) & (~STO_MIPS16 & STO_MIPS_FLAGS))                        \
 839     : ((other) & STO_MIPS_FLAGS)) == STO_MIPS_PLT)
 840 #define ELF_ST_SET_MIPS_PLT(other)                                      \
 841   ((ELF_ST_IS_MIPS16 (other)                                            \
 842     ? ((other) & (STO_MIPS16 | ~STO_MIPS_FLAGS))                        \
 843     : ((other) & ~STO_MIPS_FLAGS)) | STO_MIPS_PLT)
 844
 845 /* This value is used to mark PIC functions in an object that mixes
 846    PIC and non-PIC.  Note that this bit overlaps with STO_MIPS16,
 847    although MIPS16 symbols are never considered to be MIPS_PIC.  */
 848 #define STO_MIPS_PIC            0x20
 849 #define ELF_ST_IS_MIPS_PIC(other) (((other) & STO_MIPS_FLAGS) == STO_MIPS_PIC)
 850 #define ELF_ST_SET_MIPS_PIC(other)                                      \
 851   ((ELF_ST_IS_MIPS16 (other)                                            \
 852     ? ((other) & ~(STO_MIPS16 | STO_MIPS_FLAGS))                        \
 853     : ((other) & ~STO_MIPS_FLAGS)) | STO_MIPS_PIC)
 854
 855 /* This value is used for a mips16 .text symbol.  */
 856 #define STO_MIPS16              0xf0
 857 #define ELF_ST_IS_MIPS16(other) (((other) & STO_MIPS16) == STO_MIPS16)
 858 #define ELF_ST_SET_MIPS16(other) ((other) | STO_MIPS16)
 859
 860 /* This value is used for a microMIPS .text symbol.  To distinguish from
 861    STO_MIPS16, we set top two bits to be 10 to denote STO_MICROMIPS.  The
 862    mask is STO_MIPS_ISA.  */
 863 #define STO_MICROMIPS           (2 << 6)
 864 #define ELF_ST_IS_MICROMIPS(other) (((other) & STO_MIPS_ISA) == STO_MICROMIPS)
 865 #define ELF_ST_SET_MICROMIPS(other) (((other) & ~STO_MIPS_ISA) | STO_MICROMIPS)
 866
 867 /* Whether code compression (either of the MIPS16 or the microMIPS ASEs)
 868    has been indicated for a .text symbol.  */
 869 #define ELF_ST_IS_COMPRESSED(other) \
 870   (ELF_ST_IS_MIPS16 (other) || ELF_ST_IS_MICROMIPS (other))
 871
 872 /* This bit is used on Irix to indicate a symbol whose definition
 873    is optional - if, at final link time, it cannot be found, no
 874    error message should be produced.  */
 875 #define STO_OPTIONAL            (1 << 2)
 876 /* A macro to examine the STO_OPTIONAL bit.  */
 877 #define ELF_MIPS_IS_OPTIONAL(other)     ((other) & STO_OPTIONAL)
 878 \f
 879 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 880    relocation entry specifies up to three actual relocations, all at
 881    the same address.  The first relocation which required a symbol
 882    uses the symbol in the r_sym field.  The second relocation which
 883    requires a symbol uses the symbol in the r_ssym field.  If all
 884    three relocations require a symbol, the third one uses a zero
 885    value.  */
 886
 887 /* An entry in a 64 bit SHT_REL section.  */
 888
 889 typedef struct
 890 {
 891   /* Address of relocation.  */
 892   unsigned char r_offset[8];
 893   /* Symbol index.  */
 894   unsigned char r_sym[4];
 895   /* Special symbol.  */
 896   unsigned char r_ssym[1];
 897   /* Third relocation.  */
 898   unsigned char r_type3[1];
 899   /* Second relocation.  */
 900   unsigned char r_type2[1];
 901   /* First relocation.  */
 902   unsigned char r_type[1];
 903 } Elf64_Mips_External_Rel;
 904
 905 typedef struct
 906 {
 907   /* Address of relocation.  */
 908   bfd_vma r_offset;
 909   /* Symbol index.  */
 910   unsigned long r_sym;
 911   /* Special symbol.  */
 912   unsigned char r_ssym;
 913   /* Third relocation.  */
 914   unsigned char r_type3;
 915   /* Second relocation.  */
 916   unsigned char r_type2;
 917   /* First relocation.  */
 918   unsigned char r_type;
 919 } Elf64_Mips_Internal_Rel;
 920
 921 /* An entry in a 64 bit SHT_RELA section.  */
 922
 923 typedef struct
 924 {
 925   /* Address of relocation.  */
 926   unsigned char r_offset[8];
 927   /* Symbol index.  */
 928   unsigned char r_sym[4];
 929   /* Special symbol.  */
 930   unsigned char r_ssym[1];
 931   /* Third relocation.  */
 932   unsigned char r_type3[1];
 933   /* Second relocation.  */
 934   unsigned char r_type2[1];
 935   /* First relocation.  */
 936   unsigned char r_type[1];
 937   /* Addend.  */
 938   unsigned char r_addend[8];
 939 } Elf64_Mips_External_Rela;
 940
 941 typedef struct
 942 {
 943   /* Address of relocation.  */
 944   bfd_vma r_offset;
 945   /* Symbol index.  */
 946   unsigned long r_sym;
 947   /* Special symbol.  */
 948   unsigned char r_ssym;
 949   /* Third relocation.  */
 950   unsigned char r_type3;
 951   /* Second relocation.  */
 952   unsigned char r_type2;
 953   /* First relocation.  */
 954   unsigned char r_type;
 955   /* Addend.  */
 956   bfd_signed_vma r_addend;
 957 } Elf64_Mips_Internal_Rela;
 958
 959 /* MIPS ELF 64 relocation info access macros.  */
 960 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
 961 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
 962 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
 963 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
 964
 965 /* Values found in the r_ssym field of a relocation entry.  */
 966
 967 /* No relocation.  */
 968 #define RSS_UNDEF       0
 969
 970 /* Value of GP.  */
 971 #define RSS_GP          1
 972
 973 /* Value of GP in object being relocated.  */
 974 #define RSS_GP0         2
 975
 976 /* Address of location being relocated.  */
 977 #define RSS_LOC         3
 978 \f
 979 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 980    which starts with this header.  */
 981
 982 typedef struct
 983 {
 984   /* Type of option.  */
 985   unsigned char kind[1];
 986   /* Size of option descriptor, including header.  */
 987   unsigned char size[1];
 988   /* Section index of affected section, or 0 for global option.  */
 989   unsigned char section[2];
 990   /* Information specific to this kind of option.  */
 991   unsigned char info[4];
 992 } Elf_External_Options;
 993
 994 typedef struct
 995 {
 996   /* Type of option.  */
 997   unsigned char kind;
 998   /* Size of option descriptor, including header.  */
 999   unsigned char size;
1000   /* Section index of affected section, or 0 for global option.  */
1001   unsigned short section;
1002   /* Information specific to this kind of option.  */
1003   unsigned long info;
1004 } Elf_Internal_Options;
1005
1006 /* MIPS ELF option header swapping routines.  */
1007 extern void bfd_mips_elf_swap_options_in
1008   (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
1009 extern void bfd_mips_elf_swap_options_out
1010   (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
1011
1012 /* Values which may appear in the kind field of an Elf_Options
1013    structure.  */
1014
1015 /* Undefined.  */
1016 #define ODK_NULL        0
1017
1018 /* Register usage and GP value.  */
1019 #define ODK_REGINFO     1
1020
1021 /* Exception processing information.  */
1022 #define ODK_EXCEPTIONS  2
1023
1024 /* Section padding information.  */
1025 #define ODK_PAD         3
1026
1027 /* Hardware workarounds performed.  */
1028 #define ODK_HWPATCH     4
1029
1030 /* Fill value used by the linker.  */
1031 #define ODK_FILL        5
1032
1033 /* Reserved space for desktop tools.  */
1034 #define ODK_TAGS        6
1035
1036 /* Hardware workarounds, AND bits when merging.  */
1037 #define ODK_HWAND       7
1038
1039 /* Hardware workarounds, OR bits when merging.  */
1040 #define ODK_HWOR        8
1041
1042 /* GP group to use for text/data sections.  */
1043 #define ODK_GP_GROUP    9
1044
1045 /* ID information.  */
1046 #define ODK_IDENT       10
1047
1048 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
1049    structure.  In the 64 bit ABI, it is the following structure.  The
1050    info field of the options header is not used.  */
1051
1052 typedef struct
1053 {
1054   /* Mask of general purpose registers used.  */
1055   unsigned char ri_gprmask[4];
1056   /* Padding.  */
1057   unsigned char ri_pad[4];
1058   /* Mask of co-processor registers used.  */
1059   unsigned char ri_cprmask[4][4];
1060   /* GP register value for this object file.  */
1061   unsigned char ri_gp_value[8];
1062 } Elf64_External_RegInfo;
1063
1064 typedef struct
1065 {
1066   /* Mask of general purpose registers used.  */
1067   unsigned long ri_gprmask;
1068   /* Padding.  */
1069   unsigned long ri_pad;
1070   /* Mask of co-processor registers used.  */
1071   unsigned long ri_cprmask[4];
1072   /* GP register value for this object file.  */
1073   bfd_vma ri_gp_value;
1074 } Elf64_Internal_RegInfo;
1075
1076 /* ABI Flags structure version 0.  */
1077
1078 typedef struct
1079 {
1080   /* Version of flags structure.  */
1081   unsigned char version[2];
1082   /* The level of the ISA: 1-5, 32, 64.  */
1083   unsigned char isa_level[1];
1084   /* The revision of ISA: 0 for MIPS V and below, 1-n otherwise.  */
1085   unsigned char isa_rev[1];
1086   /* The size of general purpose registers.  */
1087   unsigned char gpr_size[1];
1088   /* The size of co-processor 1 registers.  */
1089   unsigned char cpr1_size[1];
1090   /* The size of co-processor 2 registers.  */
1091   unsigned char cpr2_size[1];
1092   /* The floating-point ABI.  */
1093   unsigned char fp_abi[1];
1094   /* Processor-specific extension.  */
1095   unsigned char isa_ext[4];
1096   /* Mask of ASEs used.  */
1097   unsigned char ases[4];
1098   /* Mask of general flags.  */
1099   unsigned char flags1[4];
1100   unsigned char flags2[4];
1101 } Elf_External_ABIFlags_v0;
1102
1103 typedef struct
1104 {
1105   /* Version of flags structure.  */
1106   unsigned short version;
1107   /* The level of the ISA: 1-5, 32, 64.  */
1108   unsigned char isa_level;
1109   /* The revision of ISA: 0 for MIPS V and below, 1-n otherwise.  */
1110   unsigned char isa_rev;
1111   /* The size of general purpose registers.  */
1112   unsigned char gpr_size;
1113   /* The size of co-processor 1 registers.  */
1114   unsigned char cpr1_size;
1115   /* The size of co-processor 2 registers.  */
1116   unsigned char cpr2_size;
1117   /* The floating-point ABI.  */
1118   unsigned char fp_abi;
1119   /* Processor-specific extension.  */
1120   unsigned long isa_ext;
1121   /* Mask of ASEs used.  */
1122   unsigned long ases;
1123   /* Mask of general flags.  */
1124   unsigned long flags1;
1125   unsigned long flags2;
1126 } Elf_Internal_ABIFlags_v0;
1127
1128 typedef struct
1129 {
1130   /* The hash value computed from the name of the corresponding
1131      dynamic symbol.  */
1132   unsigned char ms_hash_value[4];
1133   /* Contains both the dynamic relocation index and the symbol flags
1134      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
1135      to access the individual values.  The dynamic relocation index
1136      identifies the first entry in the .rel.dyn section that
1137      references the dynamic symbol corresponding to this msym entry.
1138      If the index is 0, no dynamic relocations are associated with the
1139      symbol.  The symbol flags field is reserved for future use.  */
1140   unsigned char ms_info[4];
1141 } Elf32_External_Msym;
1142
1143 typedef struct
1144 {
1145   /* The hash value computed from the name of the corresponding
1146      dynamic symbol.  */
1147   unsigned long ms_hash_value;
1148   /* Contains both the dynamic relocation index and the symbol flags
1149      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
1150      to access the individual values.  The dynamic relocation index
1151      identifies the first entry in the .rel.dyn section that
1152      references the dynamic symbol corresponding to this msym entry.
1153      If the index is 0, no dynamic relocations are associated with the
1154      symbol.  The symbol flags field is reserved for future use.  */
1155   unsigned long ms_info;
1156 } Elf32_Internal_Msym;
1157
1158 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
1159 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
1160 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
1161
1162 /* MIPS ELF reginfo swapping routines.  */
1163 extern void bfd_mips_elf64_swap_reginfo_in
1164   (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
1165 extern void bfd_mips_elf64_swap_reginfo_out
1166   (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
1167
1168 /* MIPS ELF flags swapping routines.  */
1169 extern void bfd_mips_elf_swap_abiflags_v0_in
1170   (bfd *, const Elf_External_ABIFlags_v0 *, Elf_Internal_ABIFlags_v0 *);
1171 extern void bfd_mips_elf_swap_abiflags_v0_out
1172   (bfd *, const Elf_Internal_ABIFlags_v0 *, Elf_External_ABIFlags_v0 *);
1173
1174 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
1175 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
1176 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
1177 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
1178 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
1179 #define OEX_FPDBUG      0x40000 /* Force precise floating-point
1180                                    exceptions (debug mode).  */
1181 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
1182
1183 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
1184 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
1185 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
1186 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
1187 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
1188 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
1189
1190 /* Masks for the info word of an ODK_PAD descriptor.  */
1191 #define OPAD_PREFIX     0x01
1192 #define OPAD_POSTFIX    0x02
1193 #define OPAD_SYMBOL     0x04
1194
1195 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
1196 #define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
1197 #define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
1198 #define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
1199 #define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
1200                                            (clean == 1).  */
1201 #define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
1202                                            load patch. */
1203
1204 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
1205 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
1206 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
1207
1208 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
1209 #define OHWA0_R4KEOP_CHECKED    0x00000001
1210 #define OHWA0_R4KEOP_CLEAN      0x00000002
1211
1212 /* Values for the xxx_size bytes of an ABI flags structure.  */
1213
1214 #define AFL_REG_NONE         0x00       /* No registers.  */
1215 #define AFL_REG_32           0x01       /* 32-bit registers.  */
1216 #define AFL_REG_64           0x02       /* 64-bit registers.  */
1217 #define AFL_REG_128          0x03       /* 128-bit registers.  */
1218
1219 /* Masks for the ases word of an ABI flags structure.  */
1220
1221 #define AFL_ASE_DSP          0x00000001 /* DSP ASE.  */
1222 #define AFL_ASE_DSPR2        0x00000002 /* DSP R2 ASE.  */
1223 #define AFL_ASE_EVA          0x00000004 /* Enhanced VA Scheme.  */
1224 #define AFL_ASE_MCU          0x00000008 /* MCU (MicroController) ASE.  */
1225 #define AFL_ASE_MDMX         0x00000010 /* MDMX ASE.  */
1226 #define AFL_ASE_MIPS3D       0x00000020 /* MIPS-3D ASE.  */
1227 #define AFL_ASE_MT           0x00000040 /* MT ASE.  */
1228 #define AFL_ASE_SMARTMIPS    0x00000080 /* SmartMIPS ASE.  */
1229 #define AFL_ASE_VIRT         0x00000100 /* VZ ASE.  */
1230 #define AFL_ASE_MSA          0x00000200 /* MSA ASE.  */
1231 #define AFL_ASE_MIPS16       0x00000400 /* MIPS16 ASE.  */
1232 #define AFL_ASE_MICROMIPS    0x00000800 /* MICROMIPS ASE.  */
1233 #define AFL_ASE_XPA          0x00001000 /* XPA ASE.  */
1234 #define AFL_ASE_DSPR3        0x00002000 /* DSP R3 ASE.  */
1235 #define AFL_ASE_MASK         0x00003fff /* All ASEs.  */
1236
1237 /* Values for the isa_ext word of an ABI flags structure.  */
1238
1239 #define AFL_EXT_XLR           1  /* RMI Xlr instruction.  */
1240 #define AFL_EXT_OCTEON2       2  /* Cavium Networks Octeon2.  */
1241 #define AFL_EXT_OCTEONP       3  /* Cavium Networks OcteonP.  */
1242 #define AFL_EXT_LOONGSON_3A   4  /* Loongson 3A.  */
1243 #define AFL_EXT_OCTEON        5  /* Cavium Networks Octeon.  */
1244 #define AFL_EXT_5900          6  /* MIPS R5900 instruction.  */
1245 #define AFL_EXT_4650          7  /* MIPS R4650 instruction.  */
1246 #define AFL_EXT_4010          8  /* LSI R4010 instruction.  */
1247 #define AFL_EXT_4100          9  /* NEC VR4100 instruction.  */
1248 #define AFL_EXT_3900         10  /* Toshiba R3900 instruction.  */
1249 #define AFL_EXT_10000        11  /* MIPS R10000 instruction.  */
1250 #define AFL_EXT_SB1          12  /* Broadcom SB-1 instruction.  */
1251 #define AFL_EXT_4111         13  /* NEC VR4111/VR4181 instruction.  */
1252 #define AFL_EXT_4120         14  /* NEC VR4120 instruction.  */
1253 #define AFL_EXT_5400         15  /* NEC VR5400 instruction.  */
1254 #define AFL_EXT_5500         16  /* NEC VR5500 instruction.  */
1255 #define AFL_EXT_LOONGSON_2E  17  /* ST Microelectronics Loongson 2E.  */
1256 #define AFL_EXT_LOONGSON_2F  18  /* ST Microelectronics Loongson 2F.  */
1257 #define AFL_EXT_OCTEON3      19  /* Cavium Networks Octeon3.  */
1258
1259 /* Masks for the flags1 word of an ABI flags structure.  */
1260 #define AFL_FLAGS1_ODDSPREG   1  /* Uses odd single-precision registers.  */
1261
1262 extern unsigned int bfd_mips_isa_ext (bfd *);
1263 \f
1264
1265 /* Object attribute tags.  */
1266 enum
1267 {
1268   /* 0-3 are generic.  */
1269
1270   /* Floating-point ABI used by this object file.  */
1271   Tag_GNU_MIPS_ABI_FP = 4,
1272
1273   /* MSA ABI used by this object file.  */
1274   Tag_GNU_MIPS_ABI_MSA = 8,
1275 };
1276
1277 /* Object attribute values.  */
1278 enum
1279 {
1280   /* Values defined for Tag_GNU_MIPS_ABI_FP.  */
1281
1282   /* Not tagged or not using any ABIs affected by the differences.  */
1283   Val_GNU_MIPS_ABI_FP_ANY = 0,
1284
1285   /* Using hard-float -mdouble-float.  */
1286   Val_GNU_MIPS_ABI_FP_DOUBLE = 1,
1287
1288   /* Using hard-float -msingle-float.  */
1289   Val_GNU_MIPS_ABI_FP_SINGLE = 2,
1290
1291   /* Using soft-float.  */
1292   Val_GNU_MIPS_ABI_FP_SOFT = 3,
1293
1294   /* Using -mips32r2 -mfp64.  */
1295   Val_GNU_MIPS_ABI_FP_OLD_64 = 4,
1296
1297   /* Using -mfpxx */
1298   Val_GNU_MIPS_ABI_FP_XX = 5,
1299
1300   /* Using -mips32r2 -mfp64.  */
1301   Val_GNU_MIPS_ABI_FP_64 = 6,
1302
1303   /* Using -mips32r2 -mfp64 -mno-odd-spreg.  */
1304   Val_GNU_MIPS_ABI_FP_64A = 7,
1305
1306   /* This is reserved for backward-compatibility with an earlier
1307      implementation of the MIPS NaN2008 functionality.  */
1308   Val_GNU_MIPS_ABI_FP_NAN2008 = 8,
1309
1310   /* Values defined for Tag_GNU_MIPS_ABI_MSA.  */
1311
1312   /* Not tagged or not using any ABIs affected by the differences.  */
1313   Val_GNU_MIPS_ABI_MSA_ANY = 0,
1314
1315   /* Using 128-bit MSA.  */
1316   Val_GNU_MIPS_ABI_MSA_128 = 1,
1317 };
1318
1319 #ifdef __cplusplus
1320 }
1321 #endif
1322
1323 #endif /* _ELF_MIPS_H */