include/elf/mips.h

   1 /* MIPS ELF support for BFD.
   2    Copyright (C) 1993, 1994, 1995, 1996, 1998 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  23
  24 /* This file holds definitions specific to the MIPS ELF ABI.  Note
  25    that most of this is not actually implemented by BFD.  */
  26
  27 #ifndef _ELF_MIPS_H
  28 #define _ELF_MIPS_H
  29
  30 #include "elf/reloc-macros.h"
  31
  32 /* Relocation types.  */
  33 START_RELOC_NUMBERS (elf_mips_reloc_type)
  34   RELOC_NUMBER (R_MIPS_NONE, 0)
  35   RELOC_NUMBER (R_MIPS_16, 1)
  36   RELOC_NUMBER (R_MIPS_32, 2)
  37   RELOC_NUMBER (R_MIPS_REL32, 3)
  38   RELOC_NUMBER (R_MIPS_26, 4)
  39   RELOC_NUMBER (R_MIPS_HI16, 5)
  40   RELOC_NUMBER (R_MIPS_LO16, 6)
  41   RELOC_NUMBER (R_MIPS_GPREL16, 7)
  42   RELOC_NUMBER (R_MIPS_LITERAL, 8)
  43   RELOC_NUMBER (R_MIPS_GOT16, 9)
  44   RELOC_NUMBER (R_MIPS_PC16, 10)
  45   RELOC_NUMBER (R_MIPS_CALL16, 11)
  46   RELOC_NUMBER (R_MIPS_GPREL32, 12)
  47   /* The remaining relocs are defined on Irix, although they are not
  48      in the MIPS ELF ABI.  */
  49   RELOC_NUMBER (R_MIPS_UNUSED1, 13)
  50   RELOC_NUMBER (R_MIPS_UNUSED2, 14)
  51   RELOC_NUMBER (R_MIPS_UNUSED3, 15)
  52   RELOC_NUMBER (R_MIPS_SHIFT5, 16)
  53   RELOC_NUMBER (R_MIPS_SHIFT6, 17)
  54   RELOC_NUMBER (R_MIPS_64, 18)
  55   RELOC_NUMBER (R_MIPS_GOT_DISP, 19)
  56   RELOC_NUMBER (R_MIPS_GOT_PAGE, 20)
  57   RELOC_NUMBER (R_MIPS_GOT_OFST, 21)
  58   RELOC_NUMBER (R_MIPS_GOT_HI16, 22)
  59   RELOC_NUMBER (R_MIPS_GOT_LO16, 23)
  60   RELOC_NUMBER (R_MIPS_SUB, 24)
  61   RELOC_NUMBER (R_MIPS_INSERT_A, 25)
  62   RELOC_NUMBER (R_MIPS_INSERT_B, 26)
  63   RELOC_NUMBER (R_MIPS_DELETE, 27)
  64   RELOC_NUMBER (R_MIPS_HIGHER, 28)
  65   RELOC_NUMBER (R_MIPS_HIGHEST, 29)
  66   RELOC_NUMBER (R_MIPS_CALL_HI16, 30)
  67   RELOC_NUMBER (R_MIPS_CALL_LO16, 31)
  68   RELOC_NUMBER (R_MIPS_SCN_DISP, 32)
  69   RELOC_NUMBER (R_MIPS_REL16, 33)
  70   RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34)
  71   RELOC_NUMBER (R_MIPS_PJUMP, 35)
  72   RELOC_NUMBER (R_MIPS_RELGOT, 36)
  73   RELOC_NUMBER (R_MIPS_JALR, 37)
  74   RELOC_NUMBER (R_MIPS_max, 38)
  75   /* These relocs are used for the mips16.  */
  76   RELOC_NUMBER (R_MIPS16_26, 100)
  77   RELOC_NUMBER (R_MIPS16_GPREL, 101)
  78   /* These are GNU extensions to enable C++ vtable garbage collection.  */
  79   RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253)
  80   RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254)
  81 END_RELOC_NUMBERS
  82
  83 /* Processor specific flags for the ELF header e_flags field.  */
  84
  85 /* At least one .noreorder directive appears in the source.  */
  86 #define EF_MIPS_NOREORDER       0x00000001
  87
  88 /* File contains position independent code.  */
  89 #define EF_MIPS_PIC             0x00000002
  90
  91 /* Code in file uses the standard calling sequence for calling
  92    position independent code.  */
  93 #define EF_MIPS_CPIC            0x00000004
  94
  95 /* Code in file uses new ABI (-n32 on Irix 6).  */
  96 #define EF_MIPS_ABI2            0x00000020
  97
  98 /* Indicates code compiled for a 64-bit machine in 32-bit mode.
  99    (regs are 32-bits wide.) */
 100 #define EF_MIPS_32BITMODE       0x00000100
 101
 102 /* Four bit MIPS architecture field.  */
 103 #define EF_MIPS_ARCH            0xf0000000
 104
 105 /* -mips1 code.  */
 106 #define E_MIPS_ARCH_1           0x00000000
 107
 108 /* -mips2 code.  */
 109 #define E_MIPS_ARCH_2           0x10000000
 110
 111 /* -mips3 code.  */
 112 #define E_MIPS_ARCH_3           0x20000000
 113
 114 /* -mips4 code.  */
 115 #define E_MIPS_ARCH_4           0x30000000
 116
 117 /* The ABI of the file.  Also see EF_MIPS_ABI2 above. */
 118 #define EF_MIPS_ABI             0x0000F000
 119
 120 /* The original o32 abi. */
 121 #define E_MIPS_ABI_O32          0x00001000
 122
 123 /* O32 extended to work on 64 bit architectures */
 124 #define E_MIPS_ABI_O64          0x00002000
 125
 126 /* EABI in 32 bit mode */
 127 #define E_MIPS_ABI_EABI32       0x00003000
 128
 129 /* EABI in 64 bit mode */
 130 #define E_MIPS_ABI_EABI64       0x00004000
 131
 132
 133 /* Machine variant if we know it.  This field was invented at Cygnus,
 134    but it is hoped that other vendors will adopt it.  If some standard
 135    is developed, this code should be changed to follow it. */
 136
 137 #define EF_MIPS_MACH            0x00FF0000
 138
 139 /* Cygnus is choosing values between 80 and 9F;
 140    00 - 7F should be left for a future standard;
 141    the rest are open. */
 142
 143 #define E_MIPS_MACH_3900        0x00810000
 144
 145 #define E_MIPS_MACH_4010        0x00820000
 146 #define E_MIPS_MACH_4100        0x00830000
 147 #define E_MIPS_MACH_4650        0x00850000
 148 #define E_MIPS_MACH_4111        0x00880000
 149
 150 \f
 151 /* Processor specific section indices.  These sections do not actually
 152    exist.  Symbols with a st_shndx field corresponding to one of these
 153    values have a special meaning.  */
 154
 155 /* Defined and allocated common symbol.  Value is virtual address.  If
 156    relocated, alignment must be preserved.  */
 157 #define SHN_MIPS_ACOMMON        0xff00
 158
 159 /* Defined and allocated text symbol.  Value is virtual address.
 160    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 161 #define SHN_MIPS_TEXT           0xff01
 162
 163 /* Defined and allocated data symbol.  Value is virtual address.
 164    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 165 #define SHN_MIPS_DATA           0xff02
 166
 167 /* Small common symbol.  */
 168 #define SHN_MIPS_SCOMMON        0xff03
 169
 170 /* Small undefined symbol.  */
 171 #define SHN_MIPS_SUNDEFINED     0xff04
 172 \f
 173 /* Processor specific section types.  */
 174
 175 /* Section contains the set of dynamic shared objects used when
 176    statically linking.  */
 177 #define SHT_MIPS_LIBLIST        0x70000000
 178
 179 /* I'm not sure what this is, but it's used on Irix 5.  */
 180 #define SHT_MIPS_MSYM           0x70000001
 181
 182 /* Section contains list of symbols whose definitions conflict with
 183    symbols defined in shared objects.  */
 184 #define SHT_MIPS_CONFLICT       0x70000002
 185
 186 /* Section contains the global pointer table.  */
 187 #define SHT_MIPS_GPTAB          0x70000003
 188
 189 /* Section contains microcode information.  The exact format is
 190    unspecified.  */
 191 #define SHT_MIPS_UCODE          0x70000004
 192
 193 /* Section contains some sort of debugging information.  The exact
 194    format is unspecified.  It's probably ECOFF symbols.  */
 195 #define SHT_MIPS_DEBUG          0x70000005
 196
 197 /* Section contains register usage information.  */
 198 #define SHT_MIPS_REGINFO        0x70000006
 199
 200 /* ??? */
 201 #define SHT_MIPS_PACKAGE        0x70000007
 202
 203 /* ??? */
 204 #define SHT_MIPS_PACKSYM        0x70000008
 205
 206 /* ??? */
 207 #define SHT_MIPS_RELD           0x70000009
 208
 209 /* Section contains interface information.  */
 210 #define SHT_MIPS_IFACE          0x7000000b
 211
 212 /* Section contains description of contents of another section.  */
 213 #define SHT_MIPS_CONTENT        0x7000000c
 214
 215 /* Section contains miscellaneous options.  */
 216 #define SHT_MIPS_OPTIONS        0x7000000d
 217
 218 /* ??? */
 219 #define SHT_MIPS_SHDR           0x70000010
 220
 221 /* ??? */
 222 #define SHT_MIPS_FDESC          0x70000011
 223
 224 /* ??? */
 225 #define SHT_MIPS_EXTSYM         0x70000012
 226
 227 /* ??? */
 228 #define SHT_MIPS_DENSE          0x70000013
 229
 230 /* ??? */
 231 #define SHT_MIPS_PDESC          0x70000014
 232
 233 /* ??? */
 234 #define SHT_MIPS_LOCSYM         0x70000015
 235
 236 /* ??? */
 237 #define SHT_MIPS_AUXSYM         0x70000016
 238
 239 /* ??? */
 240 #define SHT_MIPS_OPTSYM         0x70000017
 241
 242 /* ??? */
 243 #define SHT_MIPS_LOCSTR         0x70000018
 244
 245 /* ??? */
 246 #define SHT_MIPS_LINE           0x70000019
 247
 248 /* ??? */
 249 #define SHT_MIPS_RFDESC         0x7000001a
 250
 251 /* ??? */
 252 #define SHT_MIPS_DELTASYM       0x7000001b
 253
 254 /* ??? */
 255 #define SHT_MIPS_DELTAINST      0x7000001c
 256
 257 /* ??? */
 258 #define SHT_MIPS_DELTACLASS     0x7000001d
 259
 260 /* DWARF debugging section.  */
 261 #define SHT_MIPS_DWARF          0x7000001e
 262
 263 /* ??? */
 264 #define SHT_MIPS_DELTADECL      0x7000001f
 265
 266 /* List of libraries the binary depends on.  Includes a time stamp, version
 267    number.  */
 268 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 269
 270 /* Events section.  */
 271 #define SHT_MIPS_EVENTS         0x70000021
 272
 273 /* ??? */
 274 #define SHT_MIPS_TRANSLATE      0x70000022
 275
 276 /* ??? */
 277 #define SHT_MIPS_PIXIE          0x70000023
 278
 279 /* ??? */
 280 #define SHT_MIPS_XLATE          0x70000024
 281
 282 /* ??? */
 283 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 284
 285 /* ??? */
 286 #define SHT_MIPS_WHIRL          0x70000026
 287
 288 /* ??? */
 289 #define SHT_MIPS_EH_REGION      0x70000027
 290
 291 /* ??? */
 292 #define SHT_MIPS_XLATE_OLD      0x70000028
 293
 294 /* ??? */
 295 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 296
 297
 298 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 299    following structure.  The sh_link field is the section index of the
 300    string table.  The sh_info field is the number of entries in the
 301    section.  */
 302 typedef struct
 303 {
 304   /* String table index for name of shared object.  */
 305   unsigned long l_name;
 306   /* Time stamp.  */
 307   unsigned long l_time_stamp;
 308   /* Checksum of symbol names and common sizes.  */
 309   unsigned long l_checksum;
 310   /* String table index for version.  */
 311   unsigned long l_version;
 312   /* Flags.  */
 313   unsigned long l_flags;
 314 } Elf32_Lib;
 315
 316 /* The external version of Elf32_Lib.  */
 317 typedef struct
 318 {
 319   unsigned char l_name[4];
 320   unsigned char l_time_stamp[4];
 321   unsigned char l_checksum[4];
 322   unsigned char l_version[4];
 323   unsigned char l_flags[4];
 324 } Elf32_External_Lib;
 325
 326 /* The l_flags field of an Elf32_Lib structure may contain the
 327    following flags.  */
 328
 329 /* Require an exact match at runtime.  */
 330 #define LL_EXACT_MATCH          0x00000001
 331
 332 /* Ignore version incompatibilities at runtime.  */
 333 #define LL_IGNORE_INT_VER       0x00000002
 334
 335 /* Require matching minor version number.  */
 336 #define LL_REQUIRE_MINOR        0x00000004
 337
 338 /* ??? */
 339 #define LL_EXPORTS              0x00000008
 340
 341 /* Delay loading of this library until really needed.  */
 342 #define LL_DELAY_LOAD           0x00000010
 343
 344 /* ??? Delta C++ stuff ??? */
 345 #define LL_DELTA                0x00000020
 346
 347
 348 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 349    .dynsym section.  Each element has the following type.  */
 350 typedef unsigned long Elf32_Conflict;
 351 typedef unsigned char Elf32_External_Conflict[4];
 352
 353 typedef unsigned long Elf64_Conflict;
 354 typedef unsigned char Elf64_External_Conflict[8];
 355
 356 /* A section of type SHT_MIPS_GPTAB contains information about how
 357    much GP space would be required for different -G arguments.  This
 358    information is only used so that the linker can provide informative
 359    suggestions as to the best -G value to use.  The sh_info field is
 360    the index of the section for which this information applies.  The
 361    contents of the section are an array of the following union.  The
 362    first element uses the gt_header field.  The remaining elements use
 363    the gt_entry field.  */
 364 typedef union
 365 {
 366   struct
 367     {
 368       /* -G value actually used for this object file.  */
 369       unsigned long gt_current_g_value;
 370       /* Unused.  */
 371       unsigned long gt_unused;
 372     } gt_header;
 373   struct
 374     {
 375       /* If this -G argument has been used...  */
 376       unsigned long gt_g_value;
 377       /* ...this many GP section bytes would be required.  */
 378       unsigned long gt_bytes;
 379     } gt_entry;
 380 } Elf32_gptab;
 381
 382 /* The external version of Elf32_gptab.  */
 383
 384 typedef union
 385 {
 386   struct
 387     {
 388       unsigned char gt_current_g_value[4];
 389       unsigned char gt_unused[4];
 390     } gt_header;
 391   struct
 392     {
 393       unsigned char gt_g_value[4];
 394       unsigned char gt_bytes[4];
 395     } gt_entry;
 396 } Elf32_External_gptab;
 397
 398 /* A section of type SHT_MIPS_REGINFO contains the following
 399    structure.  */
 400 typedef struct
 401 {
 402   /* Mask of general purpose registers used.  */
 403   unsigned long ri_gprmask;
 404   /* Mask of co-processor registers used.  */
 405   unsigned long ri_cprmask[4];
 406   /* GP register value for this object file.  */
 407   long ri_gp_value;
 408 } Elf32_RegInfo;
 409
 410 /* The external version of the Elf_RegInfo structure.  */
 411 typedef struct
 412 {
 413   unsigned char ri_gprmask[4];
 414   unsigned char ri_cprmask[4][4];
 415   unsigned char ri_gp_value[4];
 416 } Elf32_External_RegInfo;
 417
 418 /* MIPS ELF .reginfo swapping routines.  */
 419 extern void bfd_mips_elf32_swap_reginfo_in
 420   PARAMS ((bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *));
 421 extern void bfd_mips_elf32_swap_reginfo_out
 422   PARAMS ((bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *));
 423 \f
 424 /* Processor specific section flags.  */
 425
 426 /* This section must be in the global data area.  */
 427 #define SHF_MIPS_GPREL          0x10000000
 428
 429 /* This section should be merged.  */
 430 #define SHF_MIPS_MERGE          0x20000000
 431
 432 /* This section contains 32 bit addresses.  */
 433 #define SHF_MIPS_ADDR32         0x40000000
 434
 435 /* This section contains 64 bit addresses.  */
 436 #define SHF_MIPS_ADDR64         0x80000000
 437
 438 /* This section may not be stripped.  */
 439 #define SHF_MIPS_NOSTRIP        0x08000000
 440
 441 /* This section is local to threads.  */
 442 #define SHF_MIPS_LOCAL          0x04000000
 443
 444 /* Linker should generate implicit weak names for this section.  */
 445 #define SHF_MIPS_NAMES          0x02000000
 446 \f
 447 /* Processor specific program header types.  */
 448
 449 /* Register usage information.  Identifies one .reginfo section.  */
 450 #define PT_MIPS_REGINFO         0x70000000
 451
 452 /* Runtime procedure table.  */
 453 #define PT_MIPS_RTPROC          0x70000001
 454
 455 /* Options (for what ???).  */
 456 #define PT_MIPS_OPTIONS         0x70000002
 457 \f
 458 /* Processor specific dynamic array tags.  */
 459
 460 /* 32 bit version number for runtime linker interface.  */
 461 #define DT_MIPS_RLD_VERSION     0x70000001
 462
 463 /* Time stamp.  */
 464 #define DT_MIPS_TIME_STAMP      0x70000002
 465
 466 /* Checksum of external strings and common sizes.  */
 467 #define DT_MIPS_ICHECKSUM       0x70000003
 468
 469 /* Index of version string in string table.  */
 470 #define DT_MIPS_IVERSION        0x70000004
 471
 472 /* 32 bits of flags.  */
 473 #define DT_MIPS_FLAGS           0x70000005
 474
 475 /* Base address of the segment.  */
 476 #define DT_MIPS_BASE_ADDRESS    0x70000006
 477
 478 /* ??? */
 479 #define DT_MIPS_MSYM            0x70000007
 480
 481 /* Address of .conflict section.  */
 482 #define DT_MIPS_CONFLICT        0x70000008
 483
 484 /* Address of .liblist section.  */
 485 #define DT_MIPS_LIBLIST         0x70000009
 486
 487 /* Number of local global offset table entries.  */
 488 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 489
 490 /* Number of entries in the .conflict section.  */
 491 #define DT_MIPS_CONFLICTNO      0x7000000b
 492
 493 /* Number of entries in the .liblist section.  */
 494 #define DT_MIPS_LIBLISTNO       0x70000010
 495
 496 /* Number of entries in the .dynsym section.  */
 497 #define DT_MIPS_SYMTABNO        0x70000011
 498
 499 /* Index of first external dynamic symbol not referenced locally.  */
 500 #define DT_MIPS_UNREFEXTNO      0x70000012
 501
 502 /* Index of first dynamic symbol in global offset table.  */
 503 #define DT_MIPS_GOTSYM          0x70000013
 504
 505 /* Number of page table entries in global offset table.  */
 506 #define DT_MIPS_HIPAGENO        0x70000014
 507
 508 /* Address of run time loader map, used for debugging.  */
 509 #define DT_MIPS_RLD_MAP         0x70000016
 510
 511 /* Delta C++ class definition.  */
 512 #define DT_MIPS_DELTA_CLASS     0x70000017
 513
 514 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 515 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 516
 517 /* Delta C++ class instances.  */
 518 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 519
 520 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 521 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 522
 523 /* Delta relocations.  */
 524 #define DT_MIPS_DELTA_RELOC     0x7000001b
 525
 526 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 527 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 528
 529 /* Delta symbols that Delta relocations refer to.  */
 530 #define DT_MIPS_DELTA_SYM       0x7000001d
 531
 532 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 533 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 534
 535 /* Delta symbols that hold class declarations.  */
 536 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 537
 538 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 539 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 540
 541 /* Flags indicating information about C++ flavor.  */
 542 #define DT_MIPS_CXX_FLAGS       0x70000022
 543
 544 /* Pixie information (???).  */
 545 #define DT_MIPS_PIXIE_INIT      0x70000023
 546
 547 /* ??? */
 548 #define DT_MIPS_SYMBOL_LIB      0x70000024
 549
 550 /* ??? */
 551 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 552
 553 /* ??? */
 554 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 555
 556 /* ??? */
 557 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 558
 559 /* ??? */
 560 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 561
 562 /* Address of `.MIPS.options'.  */
 563 #define DT_MIPS_OPTIONS         0x70000029
 564
 565 /* Address of `.interface'.  */
 566 #define DT_MIPS_INTERFACE       0x7000002a
 567
 568 /* ??? */
 569 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 570
 571 /* Size of the .interface section.  */
 572 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 573
 574 /* Size of rld_text_resolve function stored in the GOT.  */
 575 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 576
 577 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 578 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 579
 580 /* Size of compact relocation section (O32).  */
 581 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 582
 583 /* GP value for auxiliary GOTs.  */
 584 #define DT_MIPS_GP_VALUE        0x70000030
 585
 586 /* Address of auxiliary .dynamic.  */
 587 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 588 \f
 589 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 590
 591 /* No flags.  */
 592 #define RHF_NONE                0x00000000
 593
 594 /* Uses shortcut pointers.  */
 595 #define RHF_QUICKSTART          0x00000001
 596
 597 /* Hash size is not a power of two.  */
 598 #define RHF_NOTPOT              0x00000002
 599
 600 /* Ignore LD_LIBRARY_PATH.  */
 601 #define RHS_NO_LIBRARY_REPLACEMENT \
 602                                 0x00000004
 603
 604 #define RHF_NO_MOVE                0x00000008
 605 #define RHF_SGI_ONLY               0x00000010
 606 #define RHF_GUARANTEE_INIT         0x00000020
 607 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 608 #define RHF_GUARANTEE_START_INIT   0x00000080
 609 #define RHF_PIXIE                  0x00000100
 610 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 611 #define RHF_REQUICKSTART           0x00000400
 612 #define RHF_REQUICKSTARTED         0x00000800
 613 #define RHF_CORD                   0x00001000
 614 #define RHF_NO_UNRES_UNDEF         0x00002000
 615 #define RHF_RLD_ORDER_SAFE         0x00004000
 616 \f
 617 /* Special values for the st_other field in the symbol table.  These
 618    are used in an Irix 5 dynamic symbol table.  */
 619
 620 #define STO_DEFAULT             0x00
 621 #define STO_INTERNAL            0x01
 622 #define STO_HIDDEN              0x02
 623 #define STO_PROTECTED           0x03
 624
 625 /* This value is used for a mips16 .text symbol.  */
 626 #define STO_MIPS16              0xf0
 627 \f
 628 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 629    relocation entry specifies up to three actual relocations, all at
 630    the same address.  The first relocation which required a symbol
 631    uses the symbol in the r_sym field.  The second relocation which
 632    requires a symbol uses the symbol in the r_ssym field.  If all
 633    three relocations require a symbol, the third one uses a zero
 634    value.  */
 635
 636 /* An entry in a 64 bit SHT_REL section.  */
 637
 638 typedef struct
 639 {
 640   /* Address of relocation.  */
 641   unsigned char r_offset[8];
 642   /* Symbol index.  */
 643   unsigned char r_sym[4];
 644   /* Special symbol.  */
 645   unsigned char r_ssym[1];
 646   /* Third relocation.  */
 647   unsigned char r_type3[1];
 648   /* Second relocation.  */
 649   unsigned char r_type2[1];
 650   /* First relocation.  */
 651   unsigned char r_type[1];
 652 } Elf64_Mips_External_Rel;
 653
 654 typedef struct
 655 {
 656   /* Address of relocation.  */
 657   bfd_vma r_offset;
 658   /* Symbol index.  */
 659   unsigned long r_sym;
 660   /* Special symbol.  */
 661   unsigned char r_ssym;
 662   /* Third relocation.  */
 663   unsigned char r_type3;
 664   /* Second relocation.  */
 665   unsigned char r_type2;
 666   /* First relocation.  */
 667   unsigned char r_type;
 668 } Elf64_Mips_Internal_Rel;
 669
 670 /* An entry in a 64 bit SHT_RELA section.  */
 671
 672 typedef struct
 673 {
 674   /* Address of relocation.  */
 675   unsigned char r_offset[8];
 676   /* Symbol index.  */
 677   unsigned char r_sym[4];
 678   /* Special symbol.  */
 679   unsigned char r_ssym[1];
 680   /* Third relocation.  */
 681   unsigned char r_type3[1];
 682   /* Second relocation.  */
 683   unsigned char r_type2[1];
 684   /* First relocation.  */
 685   unsigned char r_type[1];
 686   /* Addend.  */
 687   unsigned char r_addend[8];
 688 } Elf64_Mips_External_Rela;
 689
 690 typedef struct
 691 {
 692   /* Address of relocation.  */
 693   bfd_vma r_offset;
 694   /* Symbol index.  */
 695   unsigned long r_sym;
 696   /* Special symbol.  */
 697   unsigned char r_ssym;
 698   /* Third relocation.  */
 699   unsigned char r_type3;
 700   /* Second relocation.  */
 701   unsigned char r_type2;
 702   /* First relocation.  */
 703   unsigned char r_type;
 704   /* Addend.  */
 705   bfd_signed_vma r_addend;
 706 } Elf64_Mips_Internal_Rela;
 707
 708 /* Values found in the r_ssym field of a relocation entry.  */
 709
 710 /* No relocation.  */
 711 #define RSS_UNDEF       0
 712
 713 /* Value of GP.  */
 714 #define RSS_GP          1
 715
 716 /* Value of GP in object being relocated.  */
 717 #define RSS_GP0         2
 718
 719 /* Address of location being relocated.  */
 720 #define RSS_LOC         3
 721 \f
 722 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 723    which starts with this header.  */
 724
 725 typedef struct
 726 {
 727   /* Type of option.  */
 728   unsigned char kind[1];
 729   /* Size of option descriptor, including header.  */
 730   unsigned char size[1];
 731   /* Section index of affected section, or 0 for global option.  */
 732   unsigned char section[2];
 733   /* Information specific to this kind of option.  */
 734   unsigned char info[4];
 735 } Elf_External_Options;
 736
 737 typedef struct
 738 {
 739   /* Type of option.  */
 740   unsigned char kind;
 741   /* Size of option descriptor, including header.  */
 742   unsigned char size;
 743   /* Section index of affected section, or 0 for global option.  */
 744   unsigned short section;
 745   /* Information specific to this kind of option.  */
 746   unsigned long info;
 747 } Elf_Internal_Options;
 748
 749 /* MIPS ELF option header swapping routines.  */
 750 extern void bfd_mips_elf_swap_options_in
 751   PARAMS ((bfd *, const Elf_External_Options *, Elf_Internal_Options *));
 752 extern void bfd_mips_elf_swap_options_out
 753   PARAMS ((bfd *, const Elf_Internal_Options *, Elf_External_Options *));
 754
 755 /* Values which may appear in the kind field of an Elf_Options
 756    structure.  */
 757
 758 /* Undefined.  */
 759 #define ODK_NULL        0
 760
 761 /* Register usage and GP value.  */
 762 #define ODK_REGINFO     1
 763
 764 /* Exception processing information.  */
 765 #define ODK_EXCEPTIONS  2
 766
 767 /* Section padding information.  */
 768 #define ODK_PAD         3
 769
 770 /* Hardware workarounds performed.  */
 771 #define ODK_HWPATCH     4
 772
 773 /* Fill value used by the linker.  */
 774 #define ODK_FILL        5
 775
 776 /* Reserved space for desktop tools.  */
 777 #define ODK_TAGS        6
 778
 779 /* Hardware workarounds, AND bits when merging.  */
 780 #define ODK_HWAND       7
 781
 782 /* Hardware workarounds, OR bits when merging.  */
 783 #define ODK_HWOR        8
 784
 785 /* GP group to use for text/data sections.  */
 786 #define ODK_GP_GROUP    9
 787
 788 /* ID information.  */
 789 #define ODK_IDENT       10
 790
 791 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
 792    structure.  In the 64 bit ABI, it is the following structure.  The
 793    info field of the options header is not used.  */
 794
 795 typedef struct
 796 {
 797   /* Mask of general purpose registers used.  */
 798   unsigned char ri_gprmask[4];
 799   /* Padding.  */
 800   unsigned char ri_pad[4];
 801   /* Mask of co-processor registers used.  */
 802   unsigned char ri_cprmask[4][4];
 803   /* GP register value for this object file.  */
 804   unsigned char ri_gp_value[8];
 805 } Elf64_External_RegInfo;
 806
 807 typedef struct
 808 {
 809   /* Mask of general purpose registers used.  */
 810   unsigned long ri_gprmask;
 811   /* Padding.  */
 812   unsigned long ri_pad;
 813   /* Mask of co-processor registers used.  */
 814   unsigned long ri_cprmask[4];
 815   /* GP register value for this object file.  */
 816   bfd_vma ri_gp_value;
 817 } Elf64_Internal_RegInfo;
 818
 819 typedef struct
 820 {
 821   /* The hash value computed from the name of the corresponding
 822      dynamic symbol.  */
 823   unsigned char ms_hash_value[4];
 824   /* Contains both the dynamic relocation index and the symbol flags
 825      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 826      to access the individual values.  The dynamic relocation index
 827      identifies the first entry in the .rel.dyn section that
 828      references the dynamic symbol corresponding to this msym entry.
 829      If the index is 0, no dynamic relocations are associated with the
 830      symbol.  The symbol flags field is reserved for future use.  */
 831   unsigned char ms_info[4];
 832 } Elf32_External_Msym;
 833
 834 typedef struct
 835 {
 836   /* The hash value computed from the name of the corresponding
 837      dynamic symbol.  */
 838   unsigned long ms_hash_value;
 839   /* Contains both the dynamic relocation index and the symbol flags
 840      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 841      to access the individual values.  The dynamic relocation index
 842      identifies the first entry in the .rel.dyn section that
 843      references the dynamic symbol corresponding to this msym entry.
 844      If the index is 0, no dynamic relocations are associated with the
 845      symbol.  The symbol flags field is reserved for future use.  */
 846   unsigned long ms_info;
 847 } Elf32_Internal_Msym;
 848
 849 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
 850 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
 851 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
 852
 853 /* MIPS ELF reginfo swapping routines.  */
 854 extern void bfd_mips_elf64_swap_reginfo_in
 855   PARAMS ((bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *));
 856 extern void bfd_mips_elf64_swap_reginfo_out
 857   PARAMS ((bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *));
 858
 859 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
 860 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
 861 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
 862 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
 863 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
 864 #define OEX_FPDBUG      0x40000 /* Force floating-point debug mode.  */
 865 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
 866
 867 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
 868 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
 869 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
 870 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
 871 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
 872 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
 873
 874 /* Masks for the info word of an ODK_PAD descriptor.  */
 875 #define OPAD_PREFIX     0x01
 876 #define OPAD_POSTFIX    0x02
 877 #define OPAD_SYMBOL     0x04
 878
 879 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
 880 #define OHW_R4KEOP      0x01    /* R4000 end-of-page patch.  */
 881 #define OHW_R8KPFETCH   0x02    /* May need R8000 prefetch patch.  */
 882 #define OHW_R5KEOP      0x04    /* R5000 end-of-page patch.  */
 883 #define OHW_R5KCVTL     0x08    /* R5000 cvt.[ds].l bug (clean == 1).  */
 884
 885 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
 886 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
 887 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
 888
 889 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
 890 #define OHWA0_R4KEOP_CHECKED    0x00000001
 891 #define OHWA0_R4KEOP_CLEAN      0x00000002
 892 \f
 893
 894 #endif /* _ELF_MIPS_H */