include/elf/mips.h

   1 /* MIPS ELF support for BFD.
   2    Copyright (C) 1993, 94, 95, 96, 97, 98, 99, 2000
   3    Free Software Foundation, Inc.
   4
   5    By Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>, from
   6    information in the System V Application Binary Interface, MIPS
   7    Processor Supplement.
   8
   9 This file is part of BFD, the Binary File Descriptor library.
  10
  11 This program is free software; you can redistribute it and/or modify
  12 it under the terms of the GNU General Public License as published by
  13 the Free Software Foundation; either version 2 of the License, or
  14 (at your option) any later version.
  15
  16 This program is distributed in the hope that it will be useful,
  17 but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 GNU General Public License for more details.
  20
  21 You should have received a copy of the GNU General Public License
  22 along with this program; if not, write to the Free Software
  23 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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)
  38   RELOC_NUMBER (R_MIPS_REL32, 3)
  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)
  43   RELOC_NUMBER (R_MIPS_LITERAL, 8)
  44   RELOC_NUMBER (R_MIPS_GOT16, 9)
  45   RELOC_NUMBER (R_MIPS_PC16, 10)
  46   RELOC_NUMBER (R_MIPS_CALL16, 11)
  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   RELOC_NUMBER (R_MIPS_max, 38)
  76   /* These relocs are used for the mips16.  */
  77   RELOC_NUMBER (R_MIPS16_26, 100)
  78   RELOC_NUMBER (R_MIPS16_GPREL, 101)
  79   /* These are GNU extensions to handle embedded-pic.  */
  80   RELOC_NUMBER (R_MIPS_PC32, 248)
  81   RELOC_NUMBER (R_MIPS_PC64, 249)
  82   RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250)
  83   RELOC_NUMBER (R_MIPS_GNU_REL_LO16, 251)
  84   RELOC_NUMBER (R_MIPS_GNU_REL_HI16, 252)
  85   /* These are GNU extensions to enable C++ vtable garbage collection.  */
  86   RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253)
  87   RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254)
  88 END_RELOC_NUMBERS (R_MIPS_maxext)
  89
  90 /* Processor specific flags for the ELF header e_flags field.  */
  91
  92 /* At least one .noreorder directive appears in the source.  */
  93 #define EF_MIPS_NOREORDER       0x00000001
  94
  95 /* File contains position independent code.  */
  96 #define EF_MIPS_PIC             0x00000002
  97
  98 /* Code in file uses the standard calling sequence for calling
  99    position independent code.  */
 100 #define EF_MIPS_CPIC            0x00000004
 101
 102 /* Code in file uses new ABI (-n32 on Irix 6).  */
 103 #define EF_MIPS_ABI2            0x00000020
 104
 105 /* Indicates code compiled for a 64-bit machine in 32-bit mode.
 106    (regs are 32-bits wide.) */
 107 #define EF_MIPS_32BITMODE       0x00000100
 108
 109 /* Four bit MIPS architecture field.  */
 110 #define EF_MIPS_ARCH            0xf0000000
 111
 112 /* -mips1 code.  */
 113 #define E_MIPS_ARCH_1           0x00000000
 114
 115 /* -mips2 code.  */
 116 #define E_MIPS_ARCH_2           0x10000000
 117
 118 /* -mips3 code.  */
 119 #define E_MIPS_ARCH_3           0x20000000
 120
 121 /* -mips4 code.  */
 122 #define E_MIPS_ARCH_4           0x30000000
 123
 124 /* The ABI of the file.  Also see EF_MIPS_ABI2 above. */
 125 #define EF_MIPS_ABI             0x0000F000
 126
 127 /* The original o32 abi. */
 128 #define E_MIPS_ABI_O32          0x00001000
 129
 130 /* O32 extended to work on 64 bit architectures */
 131 #define E_MIPS_ABI_O64          0x00002000
 132
 133 /* EABI in 32 bit mode */
 134 #define E_MIPS_ABI_EABI32       0x00003000
 135
 136 /* EABI in 64 bit mode */
 137 #define E_MIPS_ABI_EABI64       0x00004000
 138
 139
 140 /* Machine variant if we know it.  This field was invented at Cygnus,
 141    but it is hoped that other vendors will adopt it.  If some standard
 142    is developed, this code should be changed to follow it. */
 143
 144 #define EF_MIPS_MACH            0x00FF0000
 145
 146 /* Cygnus is choosing values between 80 and 9F;
 147    00 - 7F should be left for a future standard;
 148    the rest are open. */
 149
 150 #define E_MIPS_MACH_3900        0x00810000
 151
 152 #define E_MIPS_MACH_4010        0x00820000
 153 #define E_MIPS_MACH_4100        0x00830000
 154 #define E_MIPS_MACH_4650        0x00850000
 155 #define E_MIPS_MACH_4111        0x00880000
 156
 157 \f
 158 /* Processor specific section indices.  These sections do not actually
 159    exist.  Symbols with a st_shndx field corresponding to one of these
 160    values have a special meaning.  */
 161
 162 /* Defined and allocated common symbol.  Value is virtual address.  If
 163    relocated, alignment must be preserved.  */
 164 #define SHN_MIPS_ACOMMON        0xff00
 165
 166 /* Defined and allocated text symbol.  Value is virtual address.
 167    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 168 #define SHN_MIPS_TEXT           0xff01
 169
 170 /* Defined and allocated data symbol.  Value is virtual address.
 171    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 172 #define SHN_MIPS_DATA           0xff02
 173
 174 /* Small common symbol.  */
 175 #define SHN_MIPS_SCOMMON        0xff03
 176
 177 /* Small undefined symbol.  */
 178 #define SHN_MIPS_SUNDEFINED     0xff04
 179 \f
 180 /* Processor specific section types.  */
 181
 182 /* Section contains the set of dynamic shared objects used when
 183    statically linking.  */
 184 #define SHT_MIPS_LIBLIST        0x70000000
 185
 186 /* I'm not sure what this is, but it's used on Irix 5.  */
 187 #define SHT_MIPS_MSYM           0x70000001
 188
 189 /* Section contains list of symbols whose definitions conflict with
 190    symbols defined in shared objects.  */
 191 #define SHT_MIPS_CONFLICT       0x70000002
 192
 193 /* Section contains the global pointer table.  */
 194 #define SHT_MIPS_GPTAB          0x70000003
 195
 196 /* Section contains microcode information.  The exact format is
 197    unspecified.  */
 198 #define SHT_MIPS_UCODE          0x70000004
 199
 200 /* Section contains some sort of debugging information.  The exact
 201    format is unspecified.  It's probably ECOFF symbols.  */
 202 #define SHT_MIPS_DEBUG          0x70000005
 203
 204 /* Section contains register usage information.  */
 205 #define SHT_MIPS_REGINFO        0x70000006
 206
 207 /* ??? */
 208 #define SHT_MIPS_PACKAGE        0x70000007
 209
 210 /* ??? */
 211 #define SHT_MIPS_PACKSYM        0x70000008
 212
 213 /* ??? */
 214 #define SHT_MIPS_RELD           0x70000009
 215
 216 /* Section contains interface information.  */
 217 #define SHT_MIPS_IFACE          0x7000000b
 218
 219 /* Section contains description of contents of another section.  */
 220 #define SHT_MIPS_CONTENT        0x7000000c
 221
 222 /* Section contains miscellaneous options.  */
 223 #define SHT_MIPS_OPTIONS        0x7000000d
 224
 225 /* ??? */
 226 #define SHT_MIPS_SHDR           0x70000010
 227
 228 /* ??? */
 229 #define SHT_MIPS_FDESC          0x70000011
 230
 231 /* ??? */
 232 #define SHT_MIPS_EXTSYM         0x70000012
 233
 234 /* ??? */
 235 #define SHT_MIPS_DENSE          0x70000013
 236
 237 /* ??? */
 238 #define SHT_MIPS_PDESC          0x70000014
 239
 240 /* ??? */
 241 #define SHT_MIPS_LOCSYM         0x70000015
 242
 243 /* ??? */
 244 #define SHT_MIPS_AUXSYM         0x70000016
 245
 246 /* ??? */
 247 #define SHT_MIPS_OPTSYM         0x70000017
 248
 249 /* ??? */
 250 #define SHT_MIPS_LOCSTR         0x70000018
 251
 252 /* ??? */
 253 #define SHT_MIPS_LINE           0x70000019
 254
 255 /* ??? */
 256 #define SHT_MIPS_RFDESC         0x7000001a
 257
 258 /* ??? */
 259 #define SHT_MIPS_DELTASYM       0x7000001b
 260
 261 /* ??? */
 262 #define SHT_MIPS_DELTAINST      0x7000001c
 263
 264 /* ??? */
 265 #define SHT_MIPS_DELTACLASS     0x7000001d
 266
 267 /* DWARF debugging section.  */
 268 #define SHT_MIPS_DWARF          0x7000001e
 269
 270 /* ??? */
 271 #define SHT_MIPS_DELTADECL      0x7000001f
 272
 273 /* List of libraries the binary depends on.  Includes a time stamp, version
 274    number.  */
 275 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 276
 277 /* Events section.  */
 278 #define SHT_MIPS_EVENTS         0x70000021
 279
 280 /* ??? */
 281 #define SHT_MIPS_TRANSLATE      0x70000022
 282
 283 /* ??? */
 284 #define SHT_MIPS_PIXIE          0x70000023
 285
 286 /* ??? */
 287 #define SHT_MIPS_XLATE          0x70000024
 288
 289 /* ??? */
 290 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 291
 292 /* ??? */
 293 #define SHT_MIPS_WHIRL          0x70000026
 294
 295 /* ??? */
 296 #define SHT_MIPS_EH_REGION      0x70000027
 297
 298 /* ??? */
 299 #define SHT_MIPS_XLATE_OLD      0x70000028
 300
 301 /* ??? */
 302 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 303
 304
 305 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 306    following structure.  The sh_link field is the section index of the
 307    string table.  The sh_info field is the number of entries in the
 308    section.  */
 309 typedef struct
 310 {
 311   /* String table index for name of shared object.  */
 312   unsigned long l_name;
 313   /* Time stamp.  */
 314   unsigned long l_time_stamp;
 315   /* Checksum of symbol names and common sizes.  */
 316   unsigned long l_checksum;
 317   /* String table index for version.  */
 318   unsigned long l_version;
 319   /* Flags.  */
 320   unsigned long l_flags;
 321 } Elf32_Lib;
 322
 323 /* The external version of Elf32_Lib.  */
 324 typedef struct
 325 {
 326   unsigned char l_name[4];
 327   unsigned char l_time_stamp[4];
 328   unsigned char l_checksum[4];
 329   unsigned char l_version[4];
 330   unsigned char l_flags[4];
 331 } Elf32_External_Lib;
 332
 333 /* The l_flags field of an Elf32_Lib structure may contain the
 334    following flags.  */
 335
 336 /* Require an exact match at runtime.  */
 337 #define LL_EXACT_MATCH          0x00000001
 338
 339 /* Ignore version incompatibilities at runtime.  */
 340 #define LL_IGNORE_INT_VER       0x00000002
 341
 342 /* Require matching minor version number.  */
 343 #define LL_REQUIRE_MINOR        0x00000004
 344
 345 /* ??? */
 346 #define LL_EXPORTS              0x00000008
 347
 348 /* Delay loading of this library until really needed.  */
 349 #define LL_DELAY_LOAD           0x00000010
 350
 351 /* ??? Delta C++ stuff ??? */
 352 #define LL_DELTA                0x00000020
 353
 354
 355 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 356    .dynsym section.  Each element has the following type.  */
 357 typedef unsigned long Elf32_Conflict;
 358 typedef unsigned char Elf32_External_Conflict[4];
 359
 360 typedef unsigned long Elf64_Conflict;
 361 typedef unsigned char Elf64_External_Conflict[8];
 362
 363 /* A section of type SHT_MIPS_GPTAB contains information about how
 364    much GP space would be required for different -G arguments.  This
 365    information is only used so that the linker can provide informative
 366    suggestions as to the best -G value to use.  The sh_info field is
 367    the index of the section for which this information applies.  The
 368    contents of the section are an array of the following union.  The
 369    first element uses the gt_header field.  The remaining elements use
 370    the gt_entry field.  */
 371 typedef union
 372 {
 373   struct
 374     {
 375       /* -G value actually used for this object file.  */
 376       unsigned long gt_current_g_value;
 377       /* Unused.  */
 378       unsigned long gt_unused;
 379     } gt_header;
 380   struct
 381     {
 382       /* If this -G argument has been used...  */
 383       unsigned long gt_g_value;
 384       /* ...this many GP section bytes would be required.  */
 385       unsigned long gt_bytes;
 386     } gt_entry;
 387 } Elf32_gptab;
 388
 389 /* The external version of Elf32_gptab.  */
 390
 391 typedef union
 392 {
 393   struct
 394     {
 395       unsigned char gt_current_g_value[4];
 396       unsigned char gt_unused[4];
 397     } gt_header;
 398   struct
 399     {
 400       unsigned char gt_g_value[4];
 401       unsigned char gt_bytes[4];
 402     } gt_entry;
 403 } Elf32_External_gptab;
 404
 405 /* A section of type SHT_MIPS_REGINFO contains the following
 406    structure.  */
 407 typedef struct
 408 {
 409   /* Mask of general purpose registers used.  */
 410   unsigned long ri_gprmask;
 411   /* Mask of co-processor registers used.  */
 412   unsigned long ri_cprmask[4];
 413   /* GP register value for this object file.  */
 414   long ri_gp_value;
 415 } Elf32_RegInfo;
 416
 417 /* The external version of the Elf_RegInfo structure.  */
 418 typedef struct
 419 {
 420   unsigned char ri_gprmask[4];
 421   unsigned char ri_cprmask[4][4];
 422   unsigned char ri_gp_value[4];
 423 } Elf32_External_RegInfo;
 424
 425 /* MIPS ELF .reginfo swapping routines.  */
 426 extern void bfd_mips_elf32_swap_reginfo_in
 427   PARAMS ((bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *));
 428 extern void bfd_mips_elf32_swap_reginfo_out
 429   PARAMS ((bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *));
 430 \f
 431 /* Processor specific section flags.  */
 432
 433 /* This section must be in the global data area.  */
 434 #define SHF_MIPS_GPREL          0x10000000
 435
 436 /* This section should be merged.  */
 437 #define SHF_MIPS_MERGE          0x20000000
 438
 439 /* This section contains 32 bit addresses.  */
 440 #define SHF_MIPS_ADDR32         0x40000000
 441
 442 /* This section contains 64 bit addresses.  */
 443 #define SHF_MIPS_ADDR64         0x80000000
 444
 445 /* This section may not be stripped.  */
 446 #define SHF_MIPS_NOSTRIP        0x08000000
 447
 448 /* This section is local to threads.  */
 449 #define SHF_MIPS_LOCAL          0x04000000
 450
 451 /* Linker should generate implicit weak names for this section.  */
 452 #define SHF_MIPS_NAMES          0x02000000
 453 \f
 454 /* Processor specific program header types.  */
 455
 456 /* Register usage information.  Identifies one .reginfo section.  */
 457 #define PT_MIPS_REGINFO         0x70000000
 458
 459 /* Runtime procedure table.  */
 460 #define PT_MIPS_RTPROC          0x70000001
 461
 462 /* Options (for what ???).  */
 463 #define PT_MIPS_OPTIONS         0x70000002
 464 \f
 465 /* Processor specific dynamic array tags.  */
 466
 467 /* 32 bit version number for runtime linker interface.  */
 468 #define DT_MIPS_RLD_VERSION     0x70000001
 469
 470 /* Time stamp.  */
 471 #define DT_MIPS_TIME_STAMP      0x70000002
 472
 473 /* Checksum of external strings and common sizes.  */
 474 #define DT_MIPS_ICHECKSUM       0x70000003
 475
 476 /* Index of version string in string table.  */
 477 #define DT_MIPS_IVERSION        0x70000004
 478
 479 /* 32 bits of flags.  */
 480 #define DT_MIPS_FLAGS           0x70000005
 481
 482 /* Base address of the segment.  */
 483 #define DT_MIPS_BASE_ADDRESS    0x70000006
 484
 485 /* ??? */
 486 #define DT_MIPS_MSYM            0x70000007
 487
 488 /* Address of .conflict section.  */
 489 #define DT_MIPS_CONFLICT        0x70000008
 490
 491 /* Address of .liblist section.  */
 492 #define DT_MIPS_LIBLIST         0x70000009
 493
 494 /* Number of local global offset table entries.  */
 495 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 496
 497 /* Number of entries in the .conflict section.  */
 498 #define DT_MIPS_CONFLICTNO      0x7000000b
 499
 500 /* Number of entries in the .liblist section.  */
 501 #define DT_MIPS_LIBLISTNO       0x70000010
 502
 503 /* Number of entries in the .dynsym section.  */
 504 #define DT_MIPS_SYMTABNO        0x70000011
 505
 506 /* Index of first external dynamic symbol not referenced locally.  */
 507 #define DT_MIPS_UNREFEXTNO      0x70000012
 508
 509 /* Index of first dynamic symbol in global offset table.  */
 510 #define DT_MIPS_GOTSYM          0x70000013
 511
 512 /* Number of page table entries in global offset table.  */
 513 #define DT_MIPS_HIPAGENO        0x70000014
 514
 515 /* Address of run time loader map, used for debugging.  */
 516 #define DT_MIPS_RLD_MAP         0x70000016
 517
 518 /* Delta C++ class definition.  */
 519 #define DT_MIPS_DELTA_CLASS     0x70000017
 520
 521 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 522 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 523
 524 /* Delta C++ class instances.  */
 525 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 526
 527 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 528 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 529
 530 /* Delta relocations.  */
 531 #define DT_MIPS_DELTA_RELOC     0x7000001b
 532
 533 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 534 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 535
 536 /* Delta symbols that Delta relocations refer to.  */
 537 #define DT_MIPS_DELTA_SYM       0x7000001d
 538
 539 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 540 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 541
 542 /* Delta symbols that hold class declarations.  */
 543 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 544
 545 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 546 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 547
 548 /* Flags indicating information about C++ flavor.  */
 549 #define DT_MIPS_CXX_FLAGS       0x70000022
 550
 551 /* Pixie information (???).  */
 552 #define DT_MIPS_PIXIE_INIT      0x70000023
 553
 554 /* ??? */
 555 #define DT_MIPS_SYMBOL_LIB      0x70000024
 556
 557 /* ??? */
 558 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 559
 560 /* ??? */
 561 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 562
 563 /* ??? */
 564 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 565
 566 /* ??? */
 567 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 568
 569 /* Address of `.MIPS.options'.  */
 570 #define DT_MIPS_OPTIONS         0x70000029
 571
 572 /* Address of `.interface'.  */
 573 #define DT_MIPS_INTERFACE       0x7000002a
 574
 575 /* ??? */
 576 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 577
 578 /* Size of the .interface section.  */
 579 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 580
 581 /* Size of rld_text_resolve function stored in the GOT.  */
 582 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 583
 584 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 585 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 586
 587 /* Size of compact relocation section (O32).  */
 588 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 589
 590 /* GP value for auxiliary GOTs.  */
 591 #define DT_MIPS_GP_VALUE        0x70000030
 592
 593 /* Address of auxiliary .dynamic.  */
 594 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 595 \f
 596 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 597
 598 /* No flags.  */
 599 #define RHF_NONE                0x00000000
 600
 601 /* Uses shortcut pointers.  */
 602 #define RHF_QUICKSTART          0x00000001
 603
 604 /* Hash size is not a power of two.  */
 605 #define RHF_NOTPOT              0x00000002
 606
 607 /* Ignore LD_LIBRARY_PATH.  */
 608 #define RHS_NO_LIBRARY_REPLACEMENT \
 609                                 0x00000004
 610
 611 #define RHF_NO_MOVE                0x00000008
 612 #define RHF_SGI_ONLY               0x00000010
 613 #define RHF_GUARANTEE_INIT         0x00000020
 614 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 615 #define RHF_GUARANTEE_START_INIT   0x00000080
 616 #define RHF_PIXIE                  0x00000100
 617 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 618 #define RHF_REQUICKSTART           0x00000400
 619 #define RHF_REQUICKSTARTED         0x00000800
 620 #define RHF_CORD                   0x00001000
 621 #define RHF_NO_UNRES_UNDEF         0x00002000
 622 #define RHF_RLD_ORDER_SAFE         0x00004000
 623 \f
 624 /* Special values for the st_other field in the symbol table.  These
 625    are used in an Irix 5 dynamic symbol table.  */
 626
 627 #define STO_DEFAULT             STV_DEFAULT
 628 #define STO_INTERNAL            STV_INTERNAL
 629 #define STO_HIDDEN              STV_HIDDEN
 630 #define STO_PROTECTED           STV_PROTECTED
 631
 632 /* This value is used for a mips16 .text symbol.  */
 633 #define STO_MIPS16              0xf0
 634 \f
 635 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 636    relocation entry specifies up to three actual relocations, all at
 637    the same address.  The first relocation which required a symbol
 638    uses the symbol in the r_sym field.  The second relocation which
 639    requires a symbol uses the symbol in the r_ssym field.  If all
 640    three relocations require a symbol, the third one uses a zero
 641    value.  */
 642
 643 /* An entry in a 64 bit SHT_REL section.  */
 644
 645 typedef struct
 646 {
 647   /* Address of relocation.  */
 648   unsigned char r_offset[8];
 649   /* Symbol index.  */
 650   unsigned char r_sym[4];
 651   /* Special symbol.  */
 652   unsigned char r_ssym[1];
 653   /* Third relocation.  */
 654   unsigned char r_type3[1];
 655   /* Second relocation.  */
 656   unsigned char r_type2[1];
 657   /* First relocation.  */
 658   unsigned char r_type[1];
 659 } Elf64_Mips_External_Rel;
 660
 661 typedef struct
 662 {
 663   /* Address of relocation.  */
 664   bfd_vma r_offset;
 665   /* Symbol index.  */
 666   unsigned long r_sym;
 667   /* Special symbol.  */
 668   unsigned char r_ssym;
 669   /* Third relocation.  */
 670   unsigned char r_type3;
 671   /* Second relocation.  */
 672   unsigned char r_type2;
 673   /* First relocation.  */
 674   unsigned char r_type;
 675 } Elf64_Mips_Internal_Rel;
 676
 677 /* An entry in a 64 bit SHT_RELA section.  */
 678
 679 typedef struct
 680 {
 681   /* Address of relocation.  */
 682   unsigned char r_offset[8];
 683   /* Symbol index.  */
 684   unsigned char r_sym[4];
 685   /* Special symbol.  */
 686   unsigned char r_ssym[1];
 687   /* Third relocation.  */
 688   unsigned char r_type3[1];
 689   /* Second relocation.  */
 690   unsigned char r_type2[1];
 691   /* First relocation.  */
 692   unsigned char r_type[1];
 693   /* Addend.  */
 694   unsigned char r_addend[8];
 695 } Elf64_Mips_External_Rela;
 696
 697 typedef struct
 698 {
 699   /* Address of relocation.  */
 700   bfd_vma r_offset;
 701   /* Symbol index.  */
 702   unsigned long r_sym;
 703   /* Special symbol.  */
 704   unsigned char r_ssym;
 705   /* Third relocation.  */
 706   unsigned char r_type3;
 707   /* Second relocation.  */
 708   unsigned char r_type2;
 709   /* First relocation.  */
 710   unsigned char r_type;
 711   /* Addend.  */
 712   bfd_signed_vma r_addend;
 713 } Elf64_Mips_Internal_Rela;
 714
 715 /* Values found in the r_ssym field of a relocation entry.  */
 716
 717 /* No relocation.  */
 718 #define RSS_UNDEF       0
 719
 720 /* Value of GP.  */
 721 #define RSS_GP          1
 722
 723 /* Value of GP in object being relocated.  */
 724 #define RSS_GP0         2
 725
 726 /* Address of location being relocated.  */
 727 #define RSS_LOC         3
 728 \f
 729 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 730    which starts with this header.  */
 731
 732 typedef struct
 733 {
 734   /* Type of option.  */
 735   unsigned char kind[1];
 736   /* Size of option descriptor, including header.  */
 737   unsigned char size[1];
 738   /* Section index of affected section, or 0 for global option.  */
 739   unsigned char section[2];
 740   /* Information specific to this kind of option.  */
 741   unsigned char info[4];
 742 } Elf_External_Options;
 743
 744 typedef struct
 745 {
 746   /* Type of option.  */
 747   unsigned char kind;
 748   /* Size of option descriptor, including header.  */
 749   unsigned char size;
 750   /* Section index of affected section, or 0 for global option.  */
 751   unsigned short section;
 752   /* Information specific to this kind of option.  */
 753   unsigned long info;
 754 } Elf_Internal_Options;
 755
 756 /* MIPS ELF option header swapping routines.  */
 757 extern void bfd_mips_elf_swap_options_in
 758   PARAMS ((bfd *, const Elf_External_Options *, Elf_Internal_Options *));
 759 extern void bfd_mips_elf_swap_options_out
 760   PARAMS ((bfd *, const Elf_Internal_Options *, Elf_External_Options *));
 761
 762 /* Values which may appear in the kind field of an Elf_Options
 763    structure.  */
 764
 765 /* Undefined.  */
 766 #define ODK_NULL        0
 767
 768 /* Register usage and GP value.  */
 769 #define ODK_REGINFO     1
 770
 771 /* Exception processing information.  */
 772 #define ODK_EXCEPTIONS  2
 773
 774 /* Section padding information.  */
 775 #define ODK_PAD         3
 776
 777 /* Hardware workarounds performed.  */
 778 #define ODK_HWPATCH     4
 779
 780 /* Fill value used by the linker.  */
 781 #define ODK_FILL        5
 782
 783 /* Reserved space for desktop tools.  */
 784 #define ODK_TAGS        6
 785
 786 /* Hardware workarounds, AND bits when merging.  */
 787 #define ODK_HWAND       7
 788
 789 /* Hardware workarounds, OR bits when merging.  */
 790 #define ODK_HWOR        8
 791
 792 /* GP group to use for text/data sections.  */
 793 #define ODK_GP_GROUP    9
 794
 795 /* ID information.  */
 796 #define ODK_IDENT       10
 797
 798 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
 799    structure.  In the 64 bit ABI, it is the following structure.  The
 800    info field of the options header is not used.  */
 801
 802 typedef struct
 803 {
 804   /* Mask of general purpose registers used.  */
 805   unsigned char ri_gprmask[4];
 806   /* Padding.  */
 807   unsigned char ri_pad[4];
 808   /* Mask of co-processor registers used.  */
 809   unsigned char ri_cprmask[4][4];
 810   /* GP register value for this object file.  */
 811   unsigned char ri_gp_value[8];
 812 } Elf64_External_RegInfo;
 813
 814 typedef struct
 815 {
 816   /* Mask of general purpose registers used.  */
 817   unsigned long ri_gprmask;
 818   /* Padding.  */
 819   unsigned long ri_pad;
 820   /* Mask of co-processor registers used.  */
 821   unsigned long ri_cprmask[4];
 822   /* GP register value for this object file.  */
 823   bfd_vma ri_gp_value;
 824 } Elf64_Internal_RegInfo;
 825
 826 typedef struct
 827 {
 828   /* The hash value computed from the name of the corresponding
 829      dynamic symbol.  */
 830   unsigned char ms_hash_value[4];
 831   /* Contains both the dynamic relocation index and the symbol flags
 832      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 833      to access the individual values.  The dynamic relocation index
 834      identifies the first entry in the .rel.dyn section that
 835      references the dynamic symbol corresponding to this msym entry.
 836      If the index is 0, no dynamic relocations are associated with the
 837      symbol.  The symbol flags field is reserved for future use.  */
 838   unsigned char ms_info[4];
 839 } Elf32_External_Msym;
 840
 841 typedef struct
 842 {
 843   /* The hash value computed from the name of the corresponding
 844      dynamic symbol.  */
 845   unsigned long ms_hash_value;
 846   /* Contains both the dynamic relocation index and the symbol flags
 847      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 848      to access the individual values.  The dynamic relocation index
 849      identifies the first entry in the .rel.dyn section that
 850      references the dynamic symbol corresponding to this msym entry.
 851      If the index is 0, no dynamic relocations are associated with the
 852      symbol.  The symbol flags field is reserved for future use.  */
 853   unsigned long ms_info;
 854 } Elf32_Internal_Msym;
 855
 856 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
 857 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
 858 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
 859
 860 /* MIPS ELF reginfo swapping routines.  */
 861 extern void bfd_mips_elf64_swap_reginfo_in
 862   PARAMS ((bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *));
 863 extern void bfd_mips_elf64_swap_reginfo_out
 864   PARAMS ((bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *));
 865
 866 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
 867 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
 868 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
 869 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
 870 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
 871 #define OEX_FPDBUG      0x40000 /* Force floating-point debug mode.  */
 872 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
 873
 874 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
 875 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
 876 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
 877 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
 878 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
 879 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
 880
 881 /* Masks for the info word of an ODK_PAD descriptor.  */
 882 #define OPAD_PREFIX     0x01
 883 #define OPAD_POSTFIX    0x02
 884 #define OPAD_SYMBOL     0x04
 885
 886 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
 887 #define OHW_R4KEOP      0x01    /* R4000 end-of-page patch.  */
 888 #define OHW_R8KPFETCH   0x02    /* May need R8000 prefetch patch.  */
 889 #define OHW_R5KEOP      0x04    /* R5000 end-of-page patch.  */
 890 #define OHW_R5KCVTL     0x08    /* R5000 cvt.[ds].l bug (clean == 1).  */
 891
 892 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
 893 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
 894 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
 895
 896 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
 897 #define OHWA0_R4KEOP_CHECKED    0x00000001
 898 #define OHWA0_R4KEOP_CLEAN      0x00000002
 899 \f
 900
 901 #endif /* _ELF_MIPS_H */