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