include/elf/mips.h

   1 /* MIPS ELF support for BFD.
   2    Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
   3    2003, 2004, 2005, 2008, 2009, 2010, 2013
   4    Free Software Foundation, Inc.
   5
   6    By Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>, from
   7    information in the System V Application Binary Interface, MIPS
   8    Processor Supplement.
   9
  10    This file is part of BFD, the Binary File Descriptor library.
  11
  12    This program is free software; you can redistribute it and/or modify
  13    it under the terms of the GNU General Public License as published by
  14    the Free Software Foundation; either version 3 of the License, or
  15    (at your option) any later version.
  16
  17    This program is distributed in the hope that it will be useful,
  18    but WITHOUT ANY WARRANTY; without even the implied warranty of
  19    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20    GNU General Public License for more details.
  21
  22    You should have received a copy of the GNU General Public License
  23    along with this program; if not, write to the Free Software
  24    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  25    MA 02110-1301, USA.  */
  26
  27 /* This file holds definitions specific to the MIPS ELF ABI.  Note
  28    that most of this is not actually implemented by BFD.  */
  29
  30 #ifndef _ELF_MIPS_H
  31 #define _ELF_MIPS_H
  32
  33 #include "elf/reloc-macros.h"
  34
  35 /* Relocation types.  */
  36 START_RELOC_NUMBERS (elf_mips_reloc_type)
  37   RELOC_NUMBER (R_MIPS_NONE, 0)
  38   RELOC_NUMBER (R_MIPS_16, 1)
  39   RELOC_NUMBER (R_MIPS_32, 2)           /* In Elf 64: alias R_MIPS_ADD */
  40   RELOC_NUMBER (R_MIPS_REL32, 3)        /* In Elf 64: alias R_MIPS_REL */
  41   RELOC_NUMBER (R_MIPS_26, 4)
  42   RELOC_NUMBER (R_MIPS_HI16, 5)
  43   RELOC_NUMBER (R_MIPS_LO16, 6)
  44   RELOC_NUMBER (R_MIPS_GPREL16, 7)      /* In Elf 64: alias R_MIPS_GPREL */
  45   RELOC_NUMBER (R_MIPS_LITERAL, 8)
  46   RELOC_NUMBER (R_MIPS_GOT16, 9)        /* In Elf 64: alias R_MIPS_GOT */
  47   RELOC_NUMBER (R_MIPS_PC16, 10)
  48   RELOC_NUMBER (R_MIPS_CALL16, 11)      /* In Elf 64: alias R_MIPS_CALL */
  49   RELOC_NUMBER (R_MIPS_GPREL32, 12)
  50   /* The remaining relocs are defined on Irix, although they are not
  51      in the MIPS ELF ABI.  */
  52   RELOC_NUMBER (R_MIPS_UNUSED1, 13)
  53   RELOC_NUMBER (R_MIPS_UNUSED2, 14)
  54   RELOC_NUMBER (R_MIPS_UNUSED3, 15)
  55   RELOC_NUMBER (R_MIPS_SHIFT5, 16)
  56   RELOC_NUMBER (R_MIPS_SHIFT6, 17)
  57   RELOC_NUMBER (R_MIPS_64, 18)
  58   RELOC_NUMBER (R_MIPS_GOT_DISP, 19)
  59   RELOC_NUMBER (R_MIPS_GOT_PAGE, 20)
  60   RELOC_NUMBER (R_MIPS_GOT_OFST, 21)
  61   RELOC_NUMBER (R_MIPS_GOT_HI16, 22)
  62   RELOC_NUMBER (R_MIPS_GOT_LO16, 23)
  63   RELOC_NUMBER (R_MIPS_SUB, 24)
  64   RELOC_NUMBER (R_MIPS_INSERT_A, 25)
  65   RELOC_NUMBER (R_MIPS_INSERT_B, 26)
  66   RELOC_NUMBER (R_MIPS_DELETE, 27)
  67   RELOC_NUMBER (R_MIPS_HIGHER, 28)
  68   RELOC_NUMBER (R_MIPS_HIGHEST, 29)
  69   RELOC_NUMBER (R_MIPS_CALL_HI16, 30)
  70   RELOC_NUMBER (R_MIPS_CALL_LO16, 31)
  71   RELOC_NUMBER (R_MIPS_SCN_DISP, 32)
  72   RELOC_NUMBER (R_MIPS_REL16, 33)
  73   RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34)
  74   RELOC_NUMBER (R_MIPS_PJUMP, 35)
  75   RELOC_NUMBER (R_MIPS_RELGOT, 36)
  76   RELOC_NUMBER (R_MIPS_JALR, 37)
  77   /* TLS relocations.  */
  78   RELOC_NUMBER (R_MIPS_TLS_DTPMOD32, 38)
  79   RELOC_NUMBER (R_MIPS_TLS_DTPREL32, 39)
  80   RELOC_NUMBER (R_MIPS_TLS_DTPMOD64, 40)
  81   RELOC_NUMBER (R_MIPS_TLS_DTPREL64, 41)
  82   RELOC_NUMBER (R_MIPS_TLS_GD, 42)
  83   RELOC_NUMBER (R_MIPS_TLS_LDM, 43)
  84   RELOC_NUMBER (R_MIPS_TLS_DTPREL_HI16, 44)
  85   RELOC_NUMBER (R_MIPS_TLS_DTPREL_LO16, 45)
  86   RELOC_NUMBER (R_MIPS_TLS_GOTTPREL, 46)
  87   RELOC_NUMBER (R_MIPS_TLS_TPREL32, 47)
  88   RELOC_NUMBER (R_MIPS_TLS_TPREL64, 48)
  89   RELOC_NUMBER (R_MIPS_TLS_TPREL_HI16, 49)
  90   RELOC_NUMBER (R_MIPS_TLS_TPREL_LO16, 50)
  91   RELOC_NUMBER (R_MIPS_GLOB_DAT, 51)
  92   FAKE_RELOC (R_MIPS_max, 52)
  93   /* These relocs are used for the mips16.  */
  94   FAKE_RELOC (R_MIPS16_min, 100)
  95   RELOC_NUMBER (R_MIPS16_26, 100)
  96   RELOC_NUMBER (R_MIPS16_GPREL, 101)
  97   RELOC_NUMBER (R_MIPS16_GOT16, 102)
  98   RELOC_NUMBER (R_MIPS16_CALL16, 103)
  99   RELOC_NUMBER (R_MIPS16_HI16, 104)
 100   RELOC_NUMBER (R_MIPS16_LO16, 105)
 101   RELOC_NUMBER (R_MIPS16_TLS_GD, 106)
 102   RELOC_NUMBER (R_MIPS16_TLS_LDM, 107)
 103   RELOC_NUMBER (R_MIPS16_TLS_DTPREL_HI16, 108)
 104   RELOC_NUMBER (R_MIPS16_TLS_DTPREL_LO16, 109)
 105   RELOC_NUMBER (R_MIPS16_TLS_GOTTPREL, 110)
 106   RELOC_NUMBER (R_MIPS16_TLS_TPREL_HI16, 111)
 107   RELOC_NUMBER (R_MIPS16_TLS_TPREL_LO16, 112)
 108   FAKE_RELOC (R_MIPS16_max, 113)
 109   /* These relocations are specific to VxWorks.  */
 110   RELOC_NUMBER (R_MIPS_COPY, 126)
 111   RELOC_NUMBER (R_MIPS_JUMP_SLOT, 127)
 112
 113   /* These relocations are specific to microMIPS.  */
 114   FAKE_RELOC (R_MICROMIPS_min, 130)
 115   RELOC_NUMBER (R_MICROMIPS_26_S1, 133)
 116   RELOC_NUMBER (R_MICROMIPS_HI16, 134)
 117   RELOC_NUMBER (R_MICROMIPS_LO16, 135)
 118   RELOC_NUMBER (R_MICROMIPS_GPREL16, 136)       /* In Elf 64:
 119                                                    alias R_MICROMIPS_GPREL */
 120   RELOC_NUMBER (R_MICROMIPS_LITERAL, 137)
 121   RELOC_NUMBER (R_MICROMIPS_GOT16, 138)         /* In Elf 64:
 122                                                    alias R_MICROMIPS_GOT */
 123   RELOC_NUMBER (R_MICROMIPS_PC7_S1, 139)
 124   RELOC_NUMBER (R_MICROMIPS_PC10_S1, 140)
 125   RELOC_NUMBER (R_MICROMIPS_PC16_S1, 141)
 126   RELOC_NUMBER (R_MICROMIPS_CALL16, 142)        /* In Elf 64:
 127                                                    alias R_MICROMIPS_CALL */
 128   RELOC_NUMBER (R_MICROMIPS_GOT_DISP, 145)
 129   RELOC_NUMBER (R_MICROMIPS_GOT_PAGE, 146)
 130   RELOC_NUMBER (R_MICROMIPS_GOT_OFST, 147)
 131   RELOC_NUMBER (R_MICROMIPS_GOT_HI16, 148)
 132   RELOC_NUMBER (R_MICROMIPS_GOT_LO16, 149)
 133   RELOC_NUMBER (R_MICROMIPS_SUB, 150)
 134   RELOC_NUMBER (R_MICROMIPS_HIGHER, 151)
 135   RELOC_NUMBER (R_MICROMIPS_HIGHEST, 152)
 136   RELOC_NUMBER (R_MICROMIPS_CALL_HI16, 153)
 137   RELOC_NUMBER (R_MICROMIPS_CALL_LO16, 154)
 138   RELOC_NUMBER (R_MICROMIPS_SCN_DISP, 155)
 139   RELOC_NUMBER (R_MICROMIPS_JALR, 156)
 140   RELOC_NUMBER (R_MICROMIPS_HI0_LO16, 157)
 141   /* TLS relocations.  */
 142   RELOC_NUMBER (R_MICROMIPS_TLS_GD, 162)
 143   RELOC_NUMBER (R_MICROMIPS_TLS_LDM, 163)
 144   RELOC_NUMBER (R_MICROMIPS_TLS_DTPREL_HI16, 164)
 145   RELOC_NUMBER (R_MICROMIPS_TLS_DTPREL_LO16, 165)
 146   RELOC_NUMBER (R_MICROMIPS_TLS_GOTTPREL, 166)
 147   RELOC_NUMBER (R_MICROMIPS_TLS_TPREL_HI16, 169)
 148   RELOC_NUMBER (R_MICROMIPS_TLS_TPREL_LO16, 170)
 149   /* microMIPS GP- and PC-relative relocations. */
 150   RELOC_NUMBER (R_MICROMIPS_GPREL7_S2, 172)
 151   RELOC_NUMBER (R_MICROMIPS_PC23_S2, 173)
 152   FAKE_RELOC (R_MICROMIPS_max, 174)
 153
 154   /* This was a GNU extension used by embedded-PIC.  It was co-opted by
 155      mips-linux for exception-handling data.  GCC stopped using it in
 156      May, 2004, then started using it again for compact unwind tables.  */
 157   RELOC_NUMBER (R_MIPS_PC32, 248)
 158   RELOC_NUMBER (R_MIPS_EH, 249)
 159   /* FIXME: this relocation is used internally by gas.  */
 160   RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250)
 161   /* These are GNU extensions to enable C++ vtable garbage collection.  */
 162   RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253)
 163   RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254)
 164 END_RELOC_NUMBERS (R_MIPS_maxext)
 165
 166 /* Processor specific flags for the ELF header e_flags field.  */
 167
 168 /* At least one .noreorder directive appears in the source.  */
 169 #define EF_MIPS_NOREORDER       0x00000001
 170
 171 /* File contains position independent code.  */
 172 #define EF_MIPS_PIC             0x00000002
 173
 174 /* Code in file uses the standard calling sequence for calling
 175    position independent code.  */
 176 #define EF_MIPS_CPIC            0x00000004
 177
 178 /* ???  Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a.  */
 179 #define EF_MIPS_XGOT            0x00000008
 180
 181 /* Code in file uses UCODE (obsolete) */
 182 #define EF_MIPS_UCODE           0x00000010
 183
 184 /* Code in file uses new ABI (-n32 on Irix 6).  */
 185 #define EF_MIPS_ABI2            0x00000020
 186
 187 /* Process the .MIPS.options section first by ld */
 188 #define EF_MIPS_OPTIONS_FIRST   0x00000080
 189
 190 /* Indicates code compiled for a 64-bit machine in 32-bit mode
 191    (regs are 32-bits wide).  */
 192 #define EF_MIPS_32BITMODE       0x00000100
 193
 194 /* Code in file uses the IEEE 754-2008 NaN encoding convention.  */
 195 #define EF_MIPS_NAN2008         0x00000400
 196
 197 /* Architectural Extensions used by this file */
 198 #define EF_MIPS_ARCH_ASE        0x0f000000
 199
 200 /* Use MDMX multimedia extensions */
 201 #define EF_MIPS_ARCH_ASE_MDMX   0x08000000
 202
 203 /* Use MIPS-16 ISA extensions */
 204 #define EF_MIPS_ARCH_ASE_M16    0x04000000
 205
 206 /* Use MICROMIPS ISA extensions.  */
 207 #define EF_MIPS_ARCH_ASE_MICROMIPS      0x02000000
 208
 209 /* Four bit MIPS architecture field.  */
 210 #define EF_MIPS_ARCH            0xf0000000
 211
 212 /* -mips1 code.  */
 213 #define E_MIPS_ARCH_1           0x00000000
 214
 215 /* -mips2 code.  */
 216 #define E_MIPS_ARCH_2           0x10000000
 217
 218 /* -mips3 code.  */
 219 #define E_MIPS_ARCH_3           0x20000000
 220
 221 /* -mips4 code.  */
 222 #define E_MIPS_ARCH_4           0x30000000
 223
 224 /* -mips5 code.  */
 225 #define E_MIPS_ARCH_5           0x40000000
 226
 227 /* -mips32 code.  */
 228 #define E_MIPS_ARCH_32          0x50000000
 229
 230 /* -mips64 code.  */
 231 #define E_MIPS_ARCH_64          0x60000000
 232
 233 /* -mips32r2 code.  */
 234 #define E_MIPS_ARCH_32R2        0x70000000
 235
 236 /* -mips64r2 code.  */
 237 #define E_MIPS_ARCH_64R2        0x80000000
 238
 239 /* The ABI of the file.  Also see EF_MIPS_ABI2 above. */
 240 #define EF_MIPS_ABI             0x0000F000
 241
 242 /* The original o32 abi. */
 243 #define E_MIPS_ABI_O32          0x00001000
 244
 245 /* O32 extended to work on 64 bit architectures */
 246 #define E_MIPS_ABI_O64          0x00002000
 247
 248 /* EABI in 32 bit mode */
 249 #define E_MIPS_ABI_EABI32       0x00003000
 250
 251 /* EABI in 64 bit mode */
 252 #define E_MIPS_ABI_EABI64       0x00004000
 253
 254
 255 /* Machine variant if we know it.  This field was invented at Cygnus,
 256    but it is hoped that other vendors will adopt it.  If some standard
 257    is developed, this code should be changed to follow it. */
 258
 259 #define EF_MIPS_MACH            0x00FF0000
 260
 261 /* Cygnus is choosing values between 80 and 9F;
 262    00 - 7F should be left for a future standard;
 263    the rest are open. */
 264
 265 #define E_MIPS_MACH_3900        0x00810000
 266 #define E_MIPS_MACH_4010        0x00820000
 267 #define E_MIPS_MACH_4100        0x00830000
 268 #define E_MIPS_MACH_4650        0x00850000
 269 #define E_MIPS_MACH_4120        0x00870000
 270 #define E_MIPS_MACH_4111        0x00880000
 271 #define E_MIPS_MACH_SB1         0x008a0000
 272 #define E_MIPS_MACH_OCTEON      0x008b0000
 273 #define E_MIPS_MACH_XLR         0x008c0000
 274 #define E_MIPS_MACH_OCTEON2     0x008d0000
 275 #define E_MIPS_MACH_5400        0x00910000
 276 #define E_MIPS_MACH_5900        0x00920000
 277 #define E_MIPS_MACH_5500        0x00980000
 278 #define E_MIPS_MACH_9000        0x00990000
 279 #define E_MIPS_MACH_LS2E        0x00A00000
 280 #define E_MIPS_MACH_LS2F        0x00A10000
 281 #define E_MIPS_MACH_LS3A        0x00A20000
 282 \f
 283 /* Processor specific section indices.  These sections do not actually
 284    exist.  Symbols with a st_shndx field corresponding to one of these
 285    values have a special meaning.  */
 286
 287 /* Defined and allocated common symbol.  Value is virtual address.  If
 288    relocated, alignment must be preserved.  */
 289 #define SHN_MIPS_ACOMMON        SHN_LORESERVE
 290
 291 /* Defined and allocated text symbol.  Value is virtual address.
 292    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 293 #define SHN_MIPS_TEXT           (SHN_LORESERVE + 1)
 294
 295 /* Defined and allocated data symbol.  Value is virtual address.
 296    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 297 #define SHN_MIPS_DATA           (SHN_LORESERVE + 2)
 298
 299 /* Small common symbol.  */
 300 #define SHN_MIPS_SCOMMON        (SHN_LORESERVE + 3)
 301
 302 /* Small undefined symbol.  */
 303 #define SHN_MIPS_SUNDEFINED     (SHN_LORESERVE + 4)
 304 \f
 305 /* Processor specific section types.  */
 306
 307 /* Section contains the set of dynamic shared objects used when
 308    statically linking.  */
 309 #define SHT_MIPS_LIBLIST        0x70000000
 310
 311 /* I'm not sure what this is, but it's used on Irix 5.  */
 312 #define SHT_MIPS_MSYM           0x70000001
 313
 314 /* Section contains list of symbols whose definitions conflict with
 315    symbols defined in shared objects.  */
 316 #define SHT_MIPS_CONFLICT       0x70000002
 317
 318 /* Section contains the global pointer table.  */
 319 #define SHT_MIPS_GPTAB          0x70000003
 320
 321 /* Section contains microcode information.  The exact format is
 322    unspecified.  */
 323 #define SHT_MIPS_UCODE          0x70000004
 324
 325 /* Section contains some sort of debugging information.  The exact
 326    format is unspecified.  It's probably ECOFF symbols.  */
 327 #define SHT_MIPS_DEBUG          0x70000005
 328
 329 /* Section contains register usage information.  */
 330 #define SHT_MIPS_REGINFO        0x70000006
 331
 332 /* ??? */
 333 #define SHT_MIPS_PACKAGE        0x70000007
 334
 335 /* ??? */
 336 #define SHT_MIPS_PACKSYM        0x70000008
 337
 338 /* ??? */
 339 #define SHT_MIPS_RELD           0x70000009
 340
 341 /* Section contains interface information.  */
 342 #define SHT_MIPS_IFACE          0x7000000b
 343
 344 /* Section contains description of contents of another section.  */
 345 #define SHT_MIPS_CONTENT        0x7000000c
 346
 347 /* Section contains miscellaneous options.  */
 348 #define SHT_MIPS_OPTIONS        0x7000000d
 349
 350 /* ??? */
 351 #define SHT_MIPS_SHDR           0x70000010
 352
 353 /* ??? */
 354 #define SHT_MIPS_FDESC          0x70000011
 355
 356 /* ??? */
 357 #define SHT_MIPS_EXTSYM         0x70000012
 358
 359 /* ??? */
 360 #define SHT_MIPS_DENSE          0x70000013
 361
 362 /* ??? */
 363 #define SHT_MIPS_PDESC          0x70000014
 364
 365 /* ??? */
 366 #define SHT_MIPS_LOCSYM         0x70000015
 367
 368 /* ??? */
 369 #define SHT_MIPS_AUXSYM         0x70000016
 370
 371 /* ??? */
 372 #define SHT_MIPS_OPTSYM         0x70000017
 373
 374 /* ??? */
 375 #define SHT_MIPS_LOCSTR         0x70000018
 376
 377 /* ??? */
 378 #define SHT_MIPS_LINE           0x70000019
 379
 380 /* ??? */
 381 #define SHT_MIPS_RFDESC         0x7000001a
 382
 383 /* Delta C++: symbol table */
 384 #define SHT_MIPS_DELTASYM       0x7000001b
 385
 386 /* Delta C++: instance table */
 387 #define SHT_MIPS_DELTAINST      0x7000001c
 388
 389 /* Delta C++: class table */
 390 #define SHT_MIPS_DELTACLASS     0x7000001d
 391
 392 /* DWARF debugging section.  */
 393 #define SHT_MIPS_DWARF          0x7000001e
 394
 395 /* Delta C++: declarations */
 396 #define SHT_MIPS_DELTADECL      0x7000001f
 397
 398 /* List of libraries the binary depends on.  Includes a time stamp, version
 399    number.  */
 400 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 401
 402 /* Events section.  */
 403 #define SHT_MIPS_EVENTS         0x70000021
 404
 405 /* ??? */
 406 #define SHT_MIPS_TRANSLATE      0x70000022
 407
 408 /* Special pixie sections */
 409 #define SHT_MIPS_PIXIE          0x70000023
 410
 411 /* Address translation table (for debug info) */
 412 #define SHT_MIPS_XLATE          0x70000024
 413
 414 /* SGI internal address translation table (for debug info) */
 415 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 416
 417 /* Intermediate code */
 418 #define SHT_MIPS_WHIRL          0x70000026
 419
 420 /* C++ exception handling region info */
 421 #define SHT_MIPS_EH_REGION      0x70000027
 422
 423 /* Obsolete address translation table (for debug info) */
 424 #define SHT_MIPS_XLATE_OLD      0x70000028
 425
 426 /* Runtime procedure descriptor table exception information (ucode) ??? */
 427 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 428
 429
 430 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 431    following structure.  The sh_link field is the section index of the
 432    string table.  The sh_info field is the number of entries in the
 433    section.  */
 434 typedef struct
 435 {
 436   /* String table index for name of shared object.  */
 437   unsigned long l_name;
 438   /* Time stamp.  */
 439   unsigned long l_time_stamp;
 440   /* Checksum of symbol names and common sizes.  */
 441   unsigned long l_checksum;
 442   /* String table index for version.  */
 443   unsigned long l_version;
 444   /* Flags.  */
 445   unsigned long l_flags;
 446 } Elf32_Lib;
 447
 448 /* The external version of Elf32_Lib.  */
 449 typedef struct
 450 {
 451   unsigned char l_name[4];
 452   unsigned char l_time_stamp[4];
 453   unsigned char l_checksum[4];
 454   unsigned char l_version[4];
 455   unsigned char l_flags[4];
 456 } Elf32_External_Lib;
 457
 458 /* The l_flags field of an Elf32_Lib structure may contain the
 459    following flags.  */
 460
 461 /* Require an exact match at runtime.  */
 462 #define LL_EXACT_MATCH          0x00000001
 463
 464 /* Ignore version incompatibilities at runtime.  */
 465 #define LL_IGNORE_INT_VER       0x00000002
 466
 467 /* Require matching minor version number.  */
 468 #define LL_REQUIRE_MINOR        0x00000004
 469
 470 /* ??? */
 471 #define LL_EXPORTS              0x00000008
 472
 473 /* Delay loading of this library until really needed.  */
 474 #define LL_DELAY_LOAD           0x00000010
 475
 476 /* ??? Delta C++ stuff ??? */
 477 #define LL_DELTA                0x00000020
 478
 479
 480 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 481    .dynsym section.  Each element has the following type.  */
 482 typedef unsigned long Elf32_Conflict;
 483 typedef unsigned char Elf32_External_Conflict[4];
 484
 485 typedef unsigned long Elf64_Conflict;
 486 typedef unsigned char Elf64_External_Conflict[8];
 487
 488 /* A section of type SHT_MIPS_GPTAB contains information about how
 489    much GP space would be required for different -G arguments.  This
 490    information is only used so that the linker can provide informative
 491    suggestions as to the best -G value to use.  The sh_info field is
 492    the index of the section for which this information applies.  The
 493    contents of the section are an array of the following union.  The
 494    first element uses the gt_header field.  The remaining elements use
 495    the gt_entry field.  */
 496 typedef union
 497 {
 498   struct
 499     {
 500       /* -G value actually used for this object file.  */
 501       unsigned long gt_current_g_value;
 502       /* Unused.  */
 503       unsigned long gt_unused;
 504     } gt_header;
 505   struct
 506     {
 507       /* If this -G argument has been used...  */
 508       unsigned long gt_g_value;
 509       /* ...this many GP section bytes would be required.  */
 510       unsigned long gt_bytes;
 511     } gt_entry;
 512 } Elf32_gptab;
 513
 514 /* The external version of Elf32_gptab.  */
 515
 516 typedef union
 517 {
 518   struct
 519     {
 520       unsigned char gt_current_g_value[4];
 521       unsigned char gt_unused[4];
 522     } gt_header;
 523   struct
 524     {
 525       unsigned char gt_g_value[4];
 526       unsigned char gt_bytes[4];
 527     } gt_entry;
 528 } Elf32_External_gptab;
 529
 530 /* A section of type SHT_MIPS_REGINFO contains the following
 531    structure.  */
 532 typedef struct
 533 {
 534   /* Mask of general purpose registers used.  */
 535   unsigned long ri_gprmask;
 536   /* Mask of co-processor registers used.  */
 537   unsigned long ri_cprmask[4];
 538   /* GP register value for this object file.  */
 539   long ri_gp_value;
 540 } Elf32_RegInfo;
 541
 542 /* The external version of the Elf_RegInfo structure.  */
 543 typedef struct
 544 {
 545   unsigned char ri_gprmask[4];
 546   unsigned char ri_cprmask[4][4];
 547   unsigned char ri_gp_value[4];
 548 } Elf32_External_RegInfo;
 549
 550 /* MIPS ELF .reginfo swapping routines.  */
 551 extern void bfd_mips_elf32_swap_reginfo_in
 552   (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
 553 extern void bfd_mips_elf32_swap_reginfo_out
 554   (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
 555 \f
 556 /* Processor specific section flags.  */
 557
 558 /* This section must be in the global data area.  */
 559 #define SHF_MIPS_GPREL          0x10000000
 560
 561 /* This section should be merged.  */
 562 #define SHF_MIPS_MERGE          0x20000000
 563
 564 /* This section contains address data of size implied by section
 565    element size.  */
 566 #define SHF_MIPS_ADDR           0x40000000
 567
 568 /* This section contains string data.  */
 569 #define SHF_MIPS_STRING         0x80000000
 570
 571 /* This section may not be stripped.  */
 572 #define SHF_MIPS_NOSTRIP        0x08000000
 573
 574 /* This section is local to threads.  */
 575 #define SHF_MIPS_LOCAL          0x04000000
 576
 577 /* Linker should generate implicit weak names for this section.  */
 578 #define SHF_MIPS_NAMES          0x02000000
 579
 580 /* Section contais text/data which may be replicated in other sections.
 581    Linker should retain only one copy.  */
 582 #define SHF_MIPS_NODUPES        0x01000000
 583 \f
 584 /* Processor specific program header types.  */
 585
 586 /* Register usage information.  Identifies one .reginfo section.  */
 587 #define PT_MIPS_REGINFO         0x70000000
 588
 589 /* Runtime procedure table.  */
 590 #define PT_MIPS_RTPROC          0x70000001
 591
 592 /* .MIPS.options section.  */
 593 #define PT_MIPS_OPTIONS         0x70000002
 594 \f
 595 /* Processor specific dynamic array tags.  */
 596
 597 /* 32 bit version number for runtime linker interface.  */
 598 #define DT_MIPS_RLD_VERSION     0x70000001
 599
 600 /* Time stamp.  */
 601 #define DT_MIPS_TIME_STAMP      0x70000002
 602
 603 /* Checksum of external strings and common sizes.  */
 604 #define DT_MIPS_ICHECKSUM       0x70000003
 605
 606 /* Index of version string in string table.  */
 607 #define DT_MIPS_IVERSION        0x70000004
 608
 609 /* 32 bits of flags.  */
 610 #define DT_MIPS_FLAGS           0x70000005
 611
 612 /* Base address of the segment.  */
 613 #define DT_MIPS_BASE_ADDRESS    0x70000006
 614
 615 /* ??? */
 616 #define DT_MIPS_MSYM            0x70000007
 617
 618 /* Address of .conflict section.  */
 619 #define DT_MIPS_CONFLICT        0x70000008
 620
 621 /* Address of .liblist section.  */
 622 #define DT_MIPS_LIBLIST         0x70000009
 623
 624 /* Number of local global offset table entries.  */
 625 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 626
 627 /* Number of entries in the .conflict section.  */
 628 #define DT_MIPS_CONFLICTNO      0x7000000b
 629
 630 /* Number of entries in the .liblist section.  */
 631 #define DT_MIPS_LIBLISTNO       0x70000010
 632
 633 /* Number of entries in the .dynsym section.  */
 634 #define DT_MIPS_SYMTABNO        0x70000011
 635
 636 /* Index of first external dynamic symbol not referenced locally.  */
 637 #define DT_MIPS_UNREFEXTNO      0x70000012
 638
 639 /* Index of first dynamic symbol in global offset table.  */
 640 #define DT_MIPS_GOTSYM          0x70000013
 641
 642 /* Number of page table entries in global offset table.  */
 643 #define DT_MIPS_HIPAGENO        0x70000014
 644
 645 /* Address of run time loader map, used for debugging.  */
 646 #define DT_MIPS_RLD_MAP         0x70000016
 647
 648 /* Delta C++ class definition.  */
 649 #define DT_MIPS_DELTA_CLASS     0x70000017
 650
 651 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 652 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 653
 654 /* Delta C++ class instances.  */
 655 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 656
 657 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 658 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 659
 660 /* Delta relocations.  */
 661 #define DT_MIPS_DELTA_RELOC     0x7000001b
 662
 663 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 664 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 665
 666 /* Delta symbols that Delta relocations refer to.  */
 667 #define DT_MIPS_DELTA_SYM       0x7000001d
 668
 669 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 670 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 671
 672 /* Delta symbols that hold class declarations.  */
 673 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 674
 675 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 676 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 677
 678 /* Flags indicating information about C++ flavor.  */
 679 #define DT_MIPS_CXX_FLAGS       0x70000022
 680
 681 /* Pixie information (???).  */
 682 #define DT_MIPS_PIXIE_INIT      0x70000023
 683
 684 /* Address of .MIPS.symlib */
 685 #define DT_MIPS_SYMBOL_LIB      0x70000024
 686
 687 /* The GOT index of the first PTE for a segment */
 688 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 689
 690 /* The GOT index of the first PTE for a local symbol */
 691 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 692
 693 /* The GOT index of the first PTE for a hidden symbol */
 694 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 695
 696 /* The GOT index of the first PTE for a protected symbol */
 697 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 698
 699 /* Address of `.MIPS.options'.  */
 700 #define DT_MIPS_OPTIONS         0x70000029
 701
 702 /* Address of `.interface'.  */
 703 #define DT_MIPS_INTERFACE       0x7000002a
 704
 705 /* ??? */
 706 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 707
 708 /* Size of the .interface section.  */
 709 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 710
 711 /* Size of rld_text_resolve function stored in the GOT.  */
 712 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 713
 714 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 715 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 716
 717 /* Size of compact relocation section (O32).  */
 718 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 719
 720 /* GP value for auxiliary GOTs.  */
 721 #define DT_MIPS_GP_VALUE        0x70000030
 722
 723 /* Address of auxiliary .dynamic.  */
 724 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 725
 726 /* Address of the base of the PLTGOT.  */
 727 #define DT_MIPS_PLTGOT         0x70000032
 728
 729 /* Points to the base of a writable PLT.  */
 730 #define DT_MIPS_RWPLT          0x70000034
 731 \f
 732 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 733
 734 /* No flags.  */
 735 #define RHF_NONE                0x00000000
 736
 737 /* Uses shortcut pointers.  */
 738 #define RHF_QUICKSTART          0x00000001
 739
 740 /* Hash size is not a power of two.  */
 741 #define RHF_NOTPOT              0x00000002
 742
 743 /* Ignore LD_LIBRARY_PATH.  */
 744 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
 745
 746 /* DSO address may not be relocated. */
 747 #define RHF_NO_MOVE             0x00000008
 748
 749 /* SGI specific features. */
 750 #define RHF_SGI_ONLY            0x00000010
 751
 752 /* Guarantee that .init will finish executing before any non-init
 753    code in DSO is called. */
 754 #define RHF_GUARANTEE_INIT         0x00000020
 755
 756 /* Contains Delta C++ code. */
 757 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 758
 759 /* Guarantee that .init will start executing before any non-init
 760    code in DSO is called. */
 761 #define RHF_GUARANTEE_START_INIT   0x00000080
 762
 763 /* Generated by pixie. */
 764 #define RHF_PIXIE                  0x00000100
 765
 766 /* Delay-load DSO by default. */
 767 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 768
 769 /* Object may be requickstarted */
 770 #define RHF_REQUICKSTART           0x00000400
 771
 772 /* Object has been requickstarted */
 773 #define RHF_REQUICKSTARTED         0x00000800
 774
 775 /* Generated by cord. */
 776 #define RHF_CORD                   0x00001000
 777
 778 /* Object contains no unresolved undef symbols. */
 779 #define RHF_NO_UNRES_UNDEF         0x00002000
 780
 781 /* Symbol table is in a safe order. */
 782 #define RHF_RLD_ORDER_SAFE         0x00004000
 783 \f
 784 /* Special values for the st_other field in the symbol table.  These
 785    are used in an Irix 5 dynamic symbol table.  */
 786
 787 #define STO_DEFAULT             STV_DEFAULT
 788 #define STO_INTERNAL            STV_INTERNAL
 789 #define STO_HIDDEN              STV_HIDDEN
 790 #define STO_PROTECTED           STV_PROTECTED
 791
 792 /* Two topmost bits denote the MIPS ISA for .text symbols:
 793    + 00 -- standard MIPS code,
 794    + 10 -- microMIPS code,
 795    + 11 -- MIPS16 code; requires the following two bits to be set too.
 796    Note that one of the MIPS16 bits overlaps with STO_MIPS_PIC.  See below
 797    for details.  */
 798 #define STO_MIPS_ISA            (3 << 6)
 799
 800 /* The mask spanning the rest of MIPS psABI flags.  At most one is expected
 801    to be set except for STO_MIPS16.  */
 802 #define STO_MIPS_FLAGS          (~(STO_MIPS_ISA | ELF_ST_VISIBILITY (-1)))
 803
 804 /* The MIPS psABI was updated in 2008 with support for PLTs and copy
 805    relocs.  There are therefore two types of nonzero SHN_UNDEF functions:
 806    PLT entries and traditional MIPS lazy binding stubs.  We mark the former
 807    with STO_MIPS_PLT to distinguish them from the latter.  */
 808 #define STO_MIPS_PLT            0x8
 809 #define ELF_ST_IS_MIPS_PLT(other)                                       \
 810   ((ELF_ST_IS_MIPS16 (other)                                            \
 811     ? ((other) & (~STO_MIPS16 & STO_MIPS_FLAGS))                        \
 812     : ((other) & STO_MIPS_FLAGS)) == STO_MIPS_PLT)
 813 #define ELF_ST_SET_MIPS_PLT(other)                                      \
 814   ((ELF_ST_IS_MIPS16 (other)                                            \
 815     ? ((other) & (STO_MIPS16 | ~STO_MIPS_FLAGS))                        \
 816     : ((other) & ~STO_MIPS_FLAGS)) | STO_MIPS_PLT)
 817
 818 /* This value is used to mark PIC functions in an object that mixes
 819    PIC and non-PIC.  Note that this bit overlaps with STO_MIPS16,
 820    although MIPS16 symbols are never considered to be MIPS_PIC.  */
 821 #define STO_MIPS_PIC            0x20
 822 #define ELF_ST_IS_MIPS_PIC(other) (((other) & STO_MIPS_FLAGS) == STO_MIPS_PIC)
 823 #define ELF_ST_SET_MIPS_PIC(other)                                      \
 824   ((ELF_ST_IS_MIPS16 (other)                                            \
 825     ? ((other) & ~(STO_MIPS16 | STO_MIPS_FLAGS))                        \
 826     : ((other) & ~STO_MIPS_FLAGS)) | STO_MIPS_PIC)
 827
 828 /* This value is used for a mips16 .text symbol.  */
 829 #define STO_MIPS16              0xf0
 830 #define ELF_ST_IS_MIPS16(other) (((other) & STO_MIPS16) == STO_MIPS16)
 831 #define ELF_ST_SET_MIPS16(other) ((other) | STO_MIPS16)
 832
 833 /* This value is used for a microMIPS .text symbol.  To distinguish from
 834    STO_MIPS16, we set top two bits to be 10 to denote STO_MICROMIPS.  The
 835    mask is STO_MIPS_ISA.  */
 836 #define STO_MICROMIPS           (2 << 6)
 837 #define ELF_ST_IS_MICROMIPS(other) (((other) & STO_MIPS_ISA) == STO_MICROMIPS)
 838 #define ELF_ST_SET_MICROMIPS(other) (((other) & ~STO_MIPS_ISA) | STO_MICROMIPS)
 839
 840 /* Whether code compression (either of the MIPS16 or the microMIPS ASEs)
 841    has been indicated for a .text symbol.  */
 842 #define ELF_ST_IS_COMPRESSED(other) \
 843   (ELF_ST_IS_MIPS16 (other) || ELF_ST_IS_MICROMIPS (other))
 844
 845 /* This bit is used on Irix to indicate a symbol whose definition
 846    is optional - if, at final link time, it cannot be found, no
 847    error message should be produced.  */
 848 #define STO_OPTIONAL            (1 << 2)
 849 /* A macro to examine the STO_OPTIONAL bit.  */
 850 #define ELF_MIPS_IS_OPTIONAL(other)     ((other) & STO_OPTIONAL)
 851 \f
 852 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 853    relocation entry specifies up to three actual relocations, all at
 854    the same address.  The first relocation which required a symbol
 855    uses the symbol in the r_sym field.  The second relocation which
 856    requires a symbol uses the symbol in the r_ssym field.  If all
 857    three relocations require a symbol, the third one uses a zero
 858    value.  */
 859
 860 /* An entry in a 64 bit SHT_REL section.  */
 861
 862 typedef struct
 863 {
 864   /* Address of relocation.  */
 865   unsigned char r_offset[8];
 866   /* Symbol index.  */
 867   unsigned char r_sym[4];
 868   /* Special symbol.  */
 869   unsigned char r_ssym[1];
 870   /* Third relocation.  */
 871   unsigned char r_type3[1];
 872   /* Second relocation.  */
 873   unsigned char r_type2[1];
 874   /* First relocation.  */
 875   unsigned char r_type[1];
 876 } Elf64_Mips_External_Rel;
 877
 878 typedef struct
 879 {
 880   /* Address of relocation.  */
 881   bfd_vma r_offset;
 882   /* Symbol index.  */
 883   unsigned long r_sym;
 884   /* Special symbol.  */
 885   unsigned char r_ssym;
 886   /* Third relocation.  */
 887   unsigned char r_type3;
 888   /* Second relocation.  */
 889   unsigned char r_type2;
 890   /* First relocation.  */
 891   unsigned char r_type;
 892 } Elf64_Mips_Internal_Rel;
 893
 894 /* An entry in a 64 bit SHT_RELA section.  */
 895
 896 typedef struct
 897 {
 898   /* Address of relocation.  */
 899   unsigned char r_offset[8];
 900   /* Symbol index.  */
 901   unsigned char r_sym[4];
 902   /* Special symbol.  */
 903   unsigned char r_ssym[1];
 904   /* Third relocation.  */
 905   unsigned char r_type3[1];
 906   /* Second relocation.  */
 907   unsigned char r_type2[1];
 908   /* First relocation.  */
 909   unsigned char r_type[1];
 910   /* Addend.  */
 911   unsigned char r_addend[8];
 912 } Elf64_Mips_External_Rela;
 913
 914 typedef struct
 915 {
 916   /* Address of relocation.  */
 917   bfd_vma r_offset;
 918   /* Symbol index.  */
 919   unsigned long r_sym;
 920   /* Special symbol.  */
 921   unsigned char r_ssym;
 922   /* Third relocation.  */
 923   unsigned char r_type3;
 924   /* Second relocation.  */
 925   unsigned char r_type2;
 926   /* First relocation.  */
 927   unsigned char r_type;
 928   /* Addend.  */
 929   bfd_signed_vma r_addend;
 930 } Elf64_Mips_Internal_Rela;
 931
 932 /* MIPS ELF 64 relocation info access macros.  */
 933 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
 934 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
 935 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
 936 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
 937
 938 /* Values found in the r_ssym field of a relocation entry.  */
 939
 940 /* No relocation.  */
 941 #define RSS_UNDEF       0
 942
 943 /* Value of GP.  */
 944 #define RSS_GP          1
 945
 946 /* Value of GP in object being relocated.  */
 947 #define RSS_GP0         2
 948
 949 /* Address of location being relocated.  */
 950 #define RSS_LOC         3
 951 \f
 952 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 953    which starts with this header.  */
 954
 955 typedef struct
 956 {
 957   /* Type of option.  */
 958   unsigned char kind[1];
 959   /* Size of option descriptor, including header.  */
 960   unsigned char size[1];
 961   /* Section index of affected section, or 0 for global option.  */
 962   unsigned char section[2];
 963   /* Information specific to this kind of option.  */
 964   unsigned char info[4];
 965 } Elf_External_Options;
 966
 967 typedef struct
 968 {
 969   /* Type of option.  */
 970   unsigned char kind;
 971   /* Size of option descriptor, including header.  */
 972   unsigned char size;
 973   /* Section index of affected section, or 0 for global option.  */
 974   unsigned short section;
 975   /* Information specific to this kind of option.  */
 976   unsigned long info;
 977 } Elf_Internal_Options;
 978
 979 /* MIPS ELF option header swapping routines.  */
 980 extern void bfd_mips_elf_swap_options_in
 981   (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
 982 extern void bfd_mips_elf_swap_options_out
 983   (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
 984
 985 /* Values which may appear in the kind field of an Elf_Options
 986    structure.  */
 987
 988 /* Undefined.  */
 989 #define ODK_NULL        0
 990
 991 /* Register usage and GP value.  */
 992 #define ODK_REGINFO     1
 993
 994 /* Exception processing information.  */
 995 #define ODK_EXCEPTIONS  2
 996
 997 /* Section padding information.  */
 998 #define ODK_PAD         3
 999
1000 /* Hardware workarounds performed.  */
1001 #define ODK_HWPATCH     4
1002
1003 /* Fill value used by the linker.  */
1004 #define ODK_FILL        5
1005
1006 /* Reserved space for desktop tools.  */
1007 #define ODK_TAGS        6
1008
1009 /* Hardware workarounds, AND bits when merging.  */
1010 #define ODK_HWAND       7
1011
1012 /* Hardware workarounds, OR bits when merging.  */
1013 #define ODK_HWOR        8
1014
1015 /* GP group to use for text/data sections.  */
1016 #define ODK_GP_GROUP    9
1017
1018 /* ID information.  */
1019 #define ODK_IDENT       10
1020
1021 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
1022    structure.  In the 64 bit ABI, it is the following structure.  The
1023    info field of the options header is not used.  */
1024
1025 typedef struct
1026 {
1027   /* Mask of general purpose registers used.  */
1028   unsigned char ri_gprmask[4];
1029   /* Padding.  */
1030   unsigned char ri_pad[4];
1031   /* Mask of co-processor registers used.  */
1032   unsigned char ri_cprmask[4][4];
1033   /* GP register value for this object file.  */
1034   unsigned char ri_gp_value[8];
1035 } Elf64_External_RegInfo;
1036
1037 typedef struct
1038 {
1039   /* Mask of general purpose registers used.  */
1040   unsigned long ri_gprmask;
1041   /* Padding.  */
1042   unsigned long ri_pad;
1043   /* Mask of co-processor registers used.  */
1044   unsigned long ri_cprmask[4];
1045   /* GP register value for this object file.  */
1046   bfd_vma ri_gp_value;
1047 } Elf64_Internal_RegInfo;
1048
1049 typedef struct
1050 {
1051   /* The hash value computed from the name of the corresponding
1052      dynamic symbol.  */
1053   unsigned char ms_hash_value[4];
1054   /* Contains both the dynamic relocation index and the symbol flags
1055      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
1056      to access the individual values.  The dynamic relocation index
1057      identifies the first entry in the .rel.dyn section that
1058      references the dynamic symbol corresponding to this msym entry.
1059      If the index is 0, no dynamic relocations are associated with the
1060      symbol.  The symbol flags field is reserved for future use.  */
1061   unsigned char ms_info[4];
1062 } Elf32_External_Msym;
1063
1064 typedef struct
1065 {
1066   /* The hash value computed from the name of the corresponding
1067      dynamic symbol.  */
1068   unsigned long ms_hash_value;
1069   /* Contains both the dynamic relocation index and the symbol flags
1070      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
1071      to access the individual values.  The dynamic relocation index
1072      identifies the first entry in the .rel.dyn section that
1073      references the dynamic symbol corresponding to this msym entry.
1074      If the index is 0, no dynamic relocations are associated with the
1075      symbol.  The symbol flags field is reserved for future use.  */
1076   unsigned long ms_info;
1077 } Elf32_Internal_Msym;
1078
1079 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
1080 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
1081 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
1082
1083 /* MIPS ELF reginfo swapping routines.  */
1084 extern void bfd_mips_elf64_swap_reginfo_in
1085   (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
1086 extern void bfd_mips_elf64_swap_reginfo_out
1087   (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
1088
1089 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
1090 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
1091 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
1092 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
1093 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
1094 #define OEX_FPDBUG      0x40000 /* Force precise floating-point
1095                                    exceptions (debug mode).  */
1096 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
1097
1098 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
1099 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
1100 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
1101 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
1102 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
1103 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
1104
1105 /* Masks for the info word of an ODK_PAD descriptor.  */
1106 #define OPAD_PREFIX     0x01
1107 #define OPAD_POSTFIX    0x02
1108 #define OPAD_SYMBOL     0x04
1109
1110 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
1111 #define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
1112 #define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
1113 #define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
1114 #define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
1115                                            (clean == 1).  */
1116 #define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
1117                                            load patch. */
1118
1119 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
1120 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
1121 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
1122
1123 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
1124 #define OHWA0_R4KEOP_CHECKED    0x00000001
1125 #define OHWA0_R4KEOP_CLEAN      0x00000002
1126 \f
1127
1128 /* Object attribute tags.  */
1129 enum
1130 {
1131   /* 0-3 are generic.  */
1132
1133   /* Floating-point ABI used by this object file.  */
1134   Tag_GNU_MIPS_ABI_FP = 4,
1135 };
1136
1137 /* Object attribute values.  */
1138 enum
1139 {
1140   /* Values defined for Tag_GNU_MIPS_ABI_FP.  */
1141
1142   /* Not tagged or not using any ABIs affected by the differences.  */
1143   Val_GNU_MIPS_ABI_FP_ANY = 0,
1144
1145   /* Using hard-float -mdouble-float.  */
1146   Val_GNU_MIPS_ABI_FP_DOUBLE = 1,
1147
1148   /* Using hard-float -msingle-float.  */
1149   Val_GNU_MIPS_ABI_FP_SINGLE = 2,
1150
1151   /* Using soft-float.  */
1152   Val_GNU_MIPS_ABI_FP_SOFT = 3,
1153
1154   /* Using -mips32r2 -mfp64.  */
1155   Val_GNU_MIPS_ABI_FP_64 = 4,
1156 };
1157
1158 #endif /* _ELF_MIPS_H */