include/elf/mips.h

   1 /* MIPS ELF support for BFD.
   2    Copyright (C) 1993, 1994, 1995, 1996, 1998, 2000 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 handle embedded-pic.  */
  79   RELOC_NUMBER (R_MIPS_PC32, 248)
  80   RELOC_NUMBER (R_MIPS_PC64, 249)
  81   RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250)
  82   RELOC_NUMBER (R_MIPS_GNU_REL_LO16, 251)
  83   RELOC_NUMBER (R_MIPS_GNU_REL_HI16, 252)
  84   /* These are GNU extensions to enable C++ vtable garbage collection.  */
  85   RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253)
  86   RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254)
  87 END_RELOC_NUMBERS
  88
  89 /* Processor specific flags for the ELF header e_flags field.  */
  90
  91 /* At least one .noreorder directive appears in the source.  */
  92 #define EF_MIPS_NOREORDER       0x00000001
  93
  94 /* File contains position independent code.  */
  95 #define EF_MIPS_PIC             0x00000002
  96
  97 /* Code in file uses the standard calling sequence for calling
  98    position independent code.  */
  99 #define EF_MIPS_CPIC            0x00000004
 100
 101 /* Code in file uses new ABI (-n32 on Irix 6).  */
 102 #define EF_MIPS_ABI2            0x00000020
 103
 104 /* Indicates code compiled for a 64-bit machine in 32-bit mode.
 105    (regs are 32-bits wide.) */
 106 #define EF_MIPS_32BITMODE       0x00000100
 107
 108 /* Four bit MIPS architecture field.  */
 109 #define EF_MIPS_ARCH            0xf0000000
 110
 111 /* -mips1 code.  */
 112 #define E_MIPS_ARCH_1           0x00000000
 113
 114 /* -mips2 code.  */
 115 #define E_MIPS_ARCH_2           0x10000000
 116
 117 /* -mips3 code.  */
 118 #define E_MIPS_ARCH_3           0x20000000
 119
 120 /* -mips4 code.  */
 121 #define E_MIPS_ARCH_4           0x30000000
 122
 123 /* The ABI of the file.  Also see EF_MIPS_ABI2 above. */
 124 #define EF_MIPS_ABI             0x0000F000
 125
 126 /* The original o32 abi. */
 127 #define E_MIPS_ABI_O32          0x00001000
 128
 129 /* O32 extended to work on 64 bit architectures */
 130 #define E_MIPS_ABI_O64          0x00002000
 131
 132 /* EABI in 32 bit mode */
 133 #define E_MIPS_ABI_EABI32       0x00003000
 134
 135 /* EABI in 64 bit mode */
 136 #define E_MIPS_ABI_EABI64       0x00004000
 137
 138
 139 /* Machine variant if we know it.  This field was invented at Cygnus,
 140    but it is hoped that other vendors will adopt it.  If some standard
 141    is developed, this code should be changed to follow it. */
 142
 143 #define EF_MIPS_MACH            0x00FF0000
 144
 145 /* Cygnus is choosing values between 80 and 9F;
 146    00 - 7F should be left for a future standard;
 147    the rest are open. */
 148
 149 #define E_MIPS_MACH_3900        0x00810000
 150
 151 #define E_MIPS_MACH_4010        0x00820000
 152 #define E_MIPS_MACH_4100        0x00830000
 153 #define E_MIPS_MACH_4650        0x00850000
 154 #define E_MIPS_MACH_4111        0x00880000
 155
 156 \f
 157 /* Processor specific section indices.  These sections do not actually
 158    exist.  Symbols with a st_shndx field corresponding to one of these
 159    values have a special meaning.  */
 160
 161 /* Defined and allocated common symbol.  Value is virtual address.  If
 162    relocated, alignment must be preserved.  */
 163 #define SHN_MIPS_ACOMMON        0xff00
 164
 165 /* Defined and allocated text symbol.  Value is virtual address.
 166    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 167 #define SHN_MIPS_TEXT           0xff01
 168
 169 /* Defined and allocated data symbol.  Value is virtual address.
 170    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 171 #define SHN_MIPS_DATA           0xff02
 172
 173 /* Small common symbol.  */
 174 #define SHN_MIPS_SCOMMON        0xff03
 175
 176 /* Small undefined symbol.  */
 177 #define SHN_MIPS_SUNDEFINED     0xff04
 178 \f
 179 /* Processor specific section types.  */
 180
 181 /* Section contains the set of dynamic shared objects used when
 182    statically linking.  */
 183 #define SHT_MIPS_LIBLIST        0x70000000
 184
 185 /* I'm not sure what this is, but it's used on Irix 5.  */
 186 #define SHT_MIPS_MSYM           0x70000001
 187
 188 /* Section contains list of symbols whose definitions conflict with
 189    symbols defined in shared objects.  */
 190 #define SHT_MIPS_CONFLICT       0x70000002
 191
 192 /* Section contains the global pointer table.  */
 193 #define SHT_MIPS_GPTAB          0x70000003
 194
 195 /* Section contains microcode information.  The exact format is
 196    unspecified.  */
 197 #define SHT_MIPS_UCODE          0x70000004
 198
 199 /* Section contains some sort of debugging information.  The exact
 200    format is unspecified.  It's probably ECOFF symbols.  */
 201 #define SHT_MIPS_DEBUG          0x70000005
 202
 203 /* Section contains register usage information.  */
 204 #define SHT_MIPS_REGINFO        0x70000006
 205
 206 /* ??? */
 207 #define SHT_MIPS_PACKAGE        0x70000007
 208
 209 /* ??? */
 210 #define SHT_MIPS_PACKSYM        0x70000008
 211
 212 /* ??? */
 213 #define SHT_MIPS_RELD           0x70000009
 214
 215 /* Section contains interface information.  */
 216 #define SHT_MIPS_IFACE          0x7000000b
 217
 218 /* Section contains description of contents of another section.  */
 219 #define SHT_MIPS_CONTENT        0x7000000c
 220
 221 /* Section contains miscellaneous options.  */
 222 #define SHT_MIPS_OPTIONS        0x7000000d
 223
 224 /* ??? */
 225 #define SHT_MIPS_SHDR           0x70000010
 226
 227 /* ??? */
 228 #define SHT_MIPS_FDESC          0x70000011
 229
 230 /* ??? */
 231 #define SHT_MIPS_EXTSYM         0x70000012
 232
 233 /* ??? */
 234 #define SHT_MIPS_DENSE          0x70000013
 235
 236 /* ??? */
 237 #define SHT_MIPS_PDESC          0x70000014
 238
 239 /* ??? */
 240 #define SHT_MIPS_LOCSYM         0x70000015
 241
 242 /* ??? */
 243 #define SHT_MIPS_AUXSYM         0x70000016
 244
 245 /* ??? */
 246 #define SHT_MIPS_OPTSYM         0x70000017
 247
 248 /* ??? */
 249 #define SHT_MIPS_LOCSTR         0x70000018
 250
 251 /* ??? */
 252 #define SHT_MIPS_LINE           0x70000019
 253
 254 /* ??? */
 255 #define SHT_MIPS_RFDESC         0x7000001a
 256
 257 /* ??? */
 258 #define SHT_MIPS_DELTASYM       0x7000001b
 259
 260 /* ??? */
 261 #define SHT_MIPS_DELTAINST      0x7000001c
 262
 263 /* ??? */
 264 #define SHT_MIPS_DELTACLASS     0x7000001d
 265
 266 /* DWARF debugging section.  */
 267 #define SHT_MIPS_DWARF          0x7000001e
 268
 269 /* ??? */
 270 #define SHT_MIPS_DELTADECL      0x7000001f
 271
 272 /* List of libraries the binary depends on.  Includes a time stamp, version
 273    number.  */
 274 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 275
 276 /* Events section.  */
 277 #define SHT_MIPS_EVENTS         0x70000021
 278
 279 /* ??? */
 280 #define SHT_MIPS_TRANSLATE      0x70000022
 281
 282 /* ??? */
 283 #define SHT_MIPS_PIXIE          0x70000023
 284
 285 /* ??? */
 286 #define SHT_MIPS_XLATE          0x70000024
 287
 288 /* ??? */
 289 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 290
 291 /* ??? */
 292 #define SHT_MIPS_WHIRL          0x70000026
 293
 294 /* ??? */
 295 #define SHT_MIPS_EH_REGION      0x70000027
 296
 297 /* ??? */
 298 #define SHT_MIPS_XLATE_OLD      0x70000028
 299
 300 /* ??? */
 301 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 302
 303
 304 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 305    following structure.  The sh_link field is the section index of the
 306    string table.  The sh_info field is the number of entries in the
 307    section.  */
 308 typedef struct
 309 {
 310   /* String table index for name of shared object.  */
 311   unsigned long l_name;
 312   /* Time stamp.  */
 313   unsigned long l_time_stamp;
 314   /* Checksum of symbol names and common sizes.  */
 315   unsigned long l_checksum;
 316   /* String table index for version.  */
 317   unsigned long l_version;
 318   /* Flags.  */
 319   unsigned long l_flags;
 320 } Elf32_Lib;
 321
 322 /* The external version of Elf32_Lib.  */
 323 typedef struct
 324 {
 325   unsigned char l_name[4];
 326   unsigned char l_time_stamp[4];
 327   unsigned char l_checksum[4];
 328   unsigned char l_version[4];
 329   unsigned char l_flags[4];
 330 } Elf32_External_Lib;
 331
 332 /* The l_flags field of an Elf32_Lib structure may contain the
 333    following flags.  */
 334
 335 /* Require an exact match at runtime.  */
 336 #define LL_EXACT_MATCH          0x00000001
 337
 338 /* Ignore version incompatibilities at runtime.  */
 339 #define LL_IGNORE_INT_VER       0x00000002
 340
 341 /* Require matching minor version number.  */
 342 #define LL_REQUIRE_MINOR        0x00000004
 343
 344 /* ??? */
 345 #define LL_EXPORTS              0x00000008
 346
 347 /* Delay loading of this library until really needed.  */
 348 #define LL_DELAY_LOAD           0x00000010
 349
 350 /* ??? Delta C++ stuff ??? */
 351 #define LL_DELTA                0x00000020
 352
 353
 354 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 355    .dynsym section.  Each element has the following type.  */
 356 typedef unsigned long Elf32_Conflict;
 357 typedef unsigned char Elf32_External_Conflict[4];
 358
 359 typedef unsigned long Elf64_Conflict;
 360 typedef unsigned char Elf64_External_Conflict[8];
 361
 362 /* A section of type SHT_MIPS_GPTAB contains information about how
 363    much GP space would be required for different -G arguments.  This
 364    information is only used so that the linker can provide informative
 365    suggestions as to the best -G value to use.  The sh_info field is
 366    the index of the section for which this information applies.  The
 367    contents of the section are an array of the following union.  The
 368    first element uses the gt_header field.  The remaining elements use
 369    the gt_entry field.  */
 370 typedef union
 371 {
 372   struct
 373     {
 374       /* -G value actually used for this object file.  */
 375       unsigned long gt_current_g_value;
 376       /* Unused.  */
 377       unsigned long gt_unused;
 378     } gt_header;
 379   struct
 380     {
 381       /* If this -G argument has been used...  */
 382       unsigned long gt_g_value;
 383       /* ...this many GP section bytes would be required.  */
 384       unsigned long gt_bytes;
 385     } gt_entry;
 386 } Elf32_gptab;
 387
 388 /* The external version of Elf32_gptab.  */
 389
 390 typedef union
 391 {
 392   struct
 393     {
 394       unsigned char gt_current_g_value[4];
 395       unsigned char gt_unused[4];
 396     } gt_header;
 397   struct
 398     {
 399       unsigned char gt_g_value[4];
 400       unsigned char gt_bytes[4];
 401     } gt_entry;
 402 } Elf32_External_gptab;
 403
 404 /* A section of type SHT_MIPS_REGINFO contains the following
 405    structure.  */
 406 typedef struct
 407 {
 408   /* Mask of general purpose registers used.  */
 409   unsigned long ri_gprmask;
 410   /* Mask of co-processor registers used.  */
 411   unsigned long ri_cprmask[4];
 412   /* GP register value for this object file.  */
 413   long ri_gp_value;
 414 } Elf32_RegInfo;
 415
 416 /* The external version of the Elf_RegInfo structure.  */
 417 typedef struct
 418 {
 419   unsigned char ri_gprmask[4];
 420   unsigned char ri_cprmask[4][4];
 421   unsigned char ri_gp_value[4];
 422 } Elf32_External_RegInfo;
 423
 424 /* MIPS ELF .reginfo swapping routines.  */
 425 extern void bfd_mips_elf32_swap_reginfo_in
 426   PARAMS ((bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *));
 427 extern void bfd_mips_elf32_swap_reginfo_out
 428   PARAMS ((bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *));
 429 \f
 430 /* Processor specific section flags.  */
 431
 432 /* This section must be in the global data area.  */
 433 #define SHF_MIPS_GPREL          0x10000000
 434
 435 /* This section should be merged.  */
 436 #define SHF_MIPS_MERGE          0x20000000
 437
 438 /* This section contains 32 bit addresses.  */
 439 #define SHF_MIPS_ADDR32         0x40000000
 440
 441 /* This section contains 64 bit addresses.  */
 442 #define SHF_MIPS_ADDR64         0x80000000
 443
 444 /* This section may not be stripped.  */
 445 #define SHF_MIPS_NOSTRIP        0x08000000
 446
 447 /* This section is local to threads.  */
 448 #define SHF_MIPS_LOCAL          0x04000000
 449
 450 /* Linker should generate implicit weak names for this section.  */
 451 #define SHF_MIPS_NAMES          0x02000000
 452 \f
 453 /* Processor specific program header types.  */
 454
 455 /* Register usage information.  Identifies one .reginfo section.  */
 456 #define PT_MIPS_REGINFO         0x70000000
 457
 458 /* Runtime procedure table.  */
 459 #define PT_MIPS_RTPROC          0x70000001
 460
 461 /* Options (for what ???).  */
 462 #define PT_MIPS_OPTIONS         0x70000002
 463 \f
 464 /* Processor specific dynamic array tags.  */
 465
 466 /* 32 bit version number for runtime linker interface.  */
 467 #define DT_MIPS_RLD_VERSION     0x70000001
 468
 469 /* Time stamp.  */
 470 #define DT_MIPS_TIME_STAMP      0x70000002
 471
 472 /* Checksum of external strings and common sizes.  */
 473 #define DT_MIPS_ICHECKSUM       0x70000003
 474
 475 /* Index of version string in string table.  */
 476 #define DT_MIPS_IVERSION        0x70000004
 477
 478 /* 32 bits of flags.  */
 479 #define DT_MIPS_FLAGS           0x70000005
 480
 481 /* Base address of the segment.  */
 482 #define DT_MIPS_BASE_ADDRESS    0x70000006
 483
 484 /* ??? */
 485 #define DT_MIPS_MSYM            0x70000007
 486
 487 /* Address of .conflict section.  */
 488 #define DT_MIPS_CONFLICT        0x70000008
 489
 490 /* Address of .liblist section.  */
 491 #define DT_MIPS_LIBLIST         0x70000009
 492
 493 /* Number of local global offset table entries.  */
 494 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 495
 496 /* Number of entries in the .conflict section.  */
 497 #define DT_MIPS_CONFLICTNO      0x7000000b
 498
 499 /* Number of entries in the .liblist section.  */
 500 #define DT_MIPS_LIBLISTNO       0x70000010
 501
 502 /* Number of entries in the .dynsym section.  */
 503 #define DT_MIPS_SYMTABNO        0x70000011
 504
 505 /* Index of first external dynamic symbol not referenced locally.  */
 506 #define DT_MIPS_UNREFEXTNO      0x70000012
 507
 508 /* Index of first dynamic symbol in global offset table.  */
 509 #define DT_MIPS_GOTSYM          0x70000013
 510
 511 /* Number of page table entries in global offset table.  */
 512 #define DT_MIPS_HIPAGENO        0x70000014
 513
 514 /* Address of run time loader map, used for debugging.  */
 515 #define DT_MIPS_RLD_MAP         0x70000016
 516
 517 /* Delta C++ class definition.  */
 518 #define DT_MIPS_DELTA_CLASS     0x70000017
 519
 520 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 521 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 522
 523 /* Delta C++ class instances.  */
 524 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 525
 526 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 527 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 528
 529 /* Delta relocations.  */
 530 #define DT_MIPS_DELTA_RELOC     0x7000001b
 531
 532 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 533 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 534
 535 /* Delta symbols that Delta relocations refer to.  */
 536 #define DT_MIPS_DELTA_SYM       0x7000001d
 537
 538 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 539 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 540
 541 /* Delta symbols that hold class declarations.  */
 542 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 543
 544 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 545 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 546
 547 /* Flags indicating information about C++ flavor.  */
 548 #define DT_MIPS_CXX_FLAGS       0x70000022
 549
 550 /* Pixie information (???).  */
 551 #define DT_MIPS_PIXIE_INIT      0x70000023
 552
 553 /* ??? */
 554 #define DT_MIPS_SYMBOL_LIB      0x70000024
 555
 556 /* ??? */
 557 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 558
 559 /* ??? */
 560 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 561
 562 /* ??? */
 563 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 564
 565 /* ??? */
 566 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 567
 568 /* Address of `.MIPS.options'.  */
 569 #define DT_MIPS_OPTIONS         0x70000029
 570
 571 /* Address of `.interface'.  */
 572 #define DT_MIPS_INTERFACE       0x7000002a
 573
 574 /* ??? */
 575 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 576
 577 /* Size of the .interface section.  */
 578 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 579
 580 /* Size of rld_text_resolve function stored in the GOT.  */
 581 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 582
 583 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 584 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 585
 586 /* Size of compact relocation section (O32).  */
 587 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 588
 589 /* GP value for auxiliary GOTs.  */
 590 #define DT_MIPS_GP_VALUE        0x70000030
 591
 592 /* Address of auxiliary .dynamic.  */
 593 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 594 \f
 595 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 596
 597 /* No flags.  */
 598 #define RHF_NONE                0x00000000
 599
 600 /* Uses shortcut pointers.  */
 601 #define RHF_QUICKSTART          0x00000001
 602
 603 /* Hash size is not a power of two.  */
 604 #define RHF_NOTPOT              0x00000002
 605
 606 /* Ignore LD_LIBRARY_PATH.  */
 607 #define RHS_NO_LIBRARY_REPLACEMENT \
 608                                 0x00000004
 609
 610 #define RHF_NO_MOVE                0x00000008
 611 #define RHF_SGI_ONLY               0x00000010
 612 #define RHF_GUARANTEE_INIT         0x00000020
 613 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 614 #define RHF_GUARANTEE_START_INIT   0x00000080
 615 #define RHF_PIXIE                  0x00000100
 616 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 617 #define RHF_REQUICKSTART           0x00000400
 618 #define RHF_REQUICKSTARTED         0x00000800
 619 #define RHF_CORD                   0x00001000
 620 #define RHF_NO_UNRES_UNDEF         0x00002000
 621 #define RHF_RLD_ORDER_SAFE         0x00004000
 622 \f
 623 /* Special values for the st_other field in the symbol table.  These
 624    are used in an Irix 5 dynamic symbol table.  */
 625
 626 #define STO_DEFAULT             STV_DEFAULT
 627 #define STO_INTERNAL            STV_INTERNAL
 628 #define STO_HIDDEN              STV_HIDDEN
 629 #define STO_PROTECTED           STV_PROTECTED
 630
 631 /* This value is used for a mips16 .text symbol.  */
 632 #define STO_MIPS16              0xf0
 633 \f
 634 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 635    relocation entry specifies up to three actual relocations, all at
 636    the same address.  The first relocation which required a symbol
 637    uses the symbol in the r_sym field.  The second relocation which
 638    requires a symbol uses the symbol in the r_ssym field.  If all
 639    three relocations require a symbol, the third one uses a zero
 640    value.  */
 641
 642 /* An entry in a 64 bit SHT_REL section.  */
 643
 644 typedef struct
 645 {
 646   /* Address of relocation.  */
 647   unsigned char r_offset[8];
 648   /* Symbol index.  */
 649   unsigned char r_sym[4];
 650   /* Special symbol.  */
 651   unsigned char r_ssym[1];
 652   /* Third relocation.  */
 653   unsigned char r_type3[1];
 654   /* Second relocation.  */
 655   unsigned char r_type2[1];
 656   /* First relocation.  */
 657   unsigned char r_type[1];
 658 } Elf64_Mips_External_Rel;
 659
 660 typedef struct
 661 {
 662   /* Address of relocation.  */
 663   bfd_vma r_offset;
 664   /* Symbol index.  */
 665   unsigned long r_sym;
 666   /* Special symbol.  */
 667   unsigned char r_ssym;
 668   /* Third relocation.  */
 669   unsigned char r_type3;
 670   /* Second relocation.  */
 671   unsigned char r_type2;
 672   /* First relocation.  */
 673   unsigned char r_type;
 674 } Elf64_Mips_Internal_Rel;
 675
 676 /* An entry in a 64 bit SHT_RELA section.  */
 677
 678 typedef struct
 679 {
 680   /* Address of relocation.  */
 681   unsigned char r_offset[8];
 682   /* Symbol index.  */
 683   unsigned char r_sym[4];
 684   /* Special symbol.  */
 685   unsigned char r_ssym[1];
 686   /* Third relocation.  */
 687   unsigned char r_type3[1];
 688   /* Second relocation.  */
 689   unsigned char r_type2[1];
 690   /* First relocation.  */
 691   unsigned char r_type[1];
 692   /* Addend.  */
 693   unsigned char r_addend[8];
 694 } Elf64_Mips_External_Rela;
 695
 696 typedef struct
 697 {
 698   /* Address of relocation.  */
 699   bfd_vma r_offset;
 700   /* Symbol index.  */
 701   unsigned long r_sym;
 702   /* Special symbol.  */
 703   unsigned char r_ssym;
 704   /* Third relocation.  */
 705   unsigned char r_type3;
 706   /* Second relocation.  */
 707   unsigned char r_type2;
 708   /* First relocation.  */
 709   unsigned char r_type;
 710   /* Addend.  */
 711   bfd_signed_vma r_addend;
 712 } Elf64_Mips_Internal_Rela;
 713
 714 /* Values found in the r_ssym field of a relocation entry.  */
 715
 716 /* No relocation.  */
 717 #define RSS_UNDEF       0
 718
 719 /* Value of GP.  */
 720 #define RSS_GP          1
 721
 722 /* Value of GP in object being relocated.  */
 723 #define RSS_GP0         2
 724
 725 /* Address of location being relocated.  */
 726 #define RSS_LOC         3
 727 \f
 728 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 729    which starts with this header.  */
 730
 731 typedef struct
 732 {
 733   /* Type of option.  */
 734   unsigned char kind[1];
 735   /* Size of option descriptor, including header.  */
 736   unsigned char size[1];
 737   /* Section index of affected section, or 0 for global option.  */
 738   unsigned char section[2];
 739   /* Information specific to this kind of option.  */
 740   unsigned char info[4];
 741 } Elf_External_Options;
 742
 743 typedef struct
 744 {
 745   /* Type of option.  */
 746   unsigned char kind;
 747   /* Size of option descriptor, including header.  */
 748   unsigned char size;
 749   /* Section index of affected section, or 0 for global option.  */
 750   unsigned short section;
 751   /* Information specific to this kind of option.  */
 752   unsigned long info;
 753 } Elf_Internal_Options;
 754
 755 /* MIPS ELF option header swapping routines.  */
 756 extern void bfd_mips_elf_swap_options_in
 757   PARAMS ((bfd *, const Elf_External_Options *, Elf_Internal_Options *));
 758 extern void bfd_mips_elf_swap_options_out
 759   PARAMS ((bfd *, const Elf_Internal_Options *, Elf_External_Options *));
 760
 761 /* Values which may appear in the kind field of an Elf_Options
 762    structure.  */
 763
 764 /* Undefined.  */
 765 #define ODK_NULL        0
 766
 767 /* Register usage and GP value.  */
 768 #define ODK_REGINFO     1
 769
 770 /* Exception processing information.  */
 771 #define ODK_EXCEPTIONS  2
 772
 773 /* Section padding information.  */
 774 #define ODK_PAD         3
 775
 776 /* Hardware workarounds performed.  */
 777 #define ODK_HWPATCH     4
 778
 779 /* Fill value used by the linker.  */
 780 #define ODK_FILL        5
 781
 782 /* Reserved space for desktop tools.  */
 783 #define ODK_TAGS        6
 784
 785 /* Hardware workarounds, AND bits when merging.  */
 786 #define ODK_HWAND       7
 787
 788 /* Hardware workarounds, OR bits when merging.  */
 789 #define ODK_HWOR        8
 790
 791 /* GP group to use for text/data sections.  */
 792 #define ODK_GP_GROUP    9
 793
 794 /* ID information.  */
 795 #define ODK_IDENT       10
 796
 797 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
 798    structure.  In the 64 bit ABI, it is the following structure.  The
 799    info field of the options header is not used.  */
 800
 801 typedef struct
 802 {
 803   /* Mask of general purpose registers used.  */
 804   unsigned char ri_gprmask[4];
 805   /* Padding.  */
 806   unsigned char ri_pad[4];
 807   /* Mask of co-processor registers used.  */
 808   unsigned char ri_cprmask[4][4];
 809   /* GP register value for this object file.  */
 810   unsigned char ri_gp_value[8];
 811 } Elf64_External_RegInfo;
 812
 813 typedef struct
 814 {
 815   /* Mask of general purpose registers used.  */
 816   unsigned long ri_gprmask;
 817   /* Padding.  */
 818   unsigned long ri_pad;
 819   /* Mask of co-processor registers used.  */
 820   unsigned long ri_cprmask[4];
 821   /* GP register value for this object file.  */
 822   bfd_vma ri_gp_value;
 823 } Elf64_Internal_RegInfo;
 824
 825 typedef struct
 826 {
 827   /* The hash value computed from the name of the corresponding
 828      dynamic symbol.  */
 829   unsigned char ms_hash_value[4];
 830   /* Contains both the dynamic relocation index and the symbol flags
 831      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 832      to access the individual values.  The dynamic relocation index
 833      identifies the first entry in the .rel.dyn section that
 834      references the dynamic symbol corresponding to this msym entry.
 835      If the index is 0, no dynamic relocations are associated with the
 836      symbol.  The symbol flags field is reserved for future use.  */
 837   unsigned char ms_info[4];
 838 } Elf32_External_Msym;
 839
 840 typedef struct
 841 {
 842   /* The hash value computed from the name of the corresponding
 843      dynamic symbol.  */
 844   unsigned long ms_hash_value;
 845   /* Contains both the dynamic relocation index and the symbol flags
 846      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 847      to access the individual values.  The dynamic relocation index
 848      identifies the first entry in the .rel.dyn section that
 849      references the dynamic symbol corresponding to this msym entry.
 850      If the index is 0, no dynamic relocations are associated with the
 851      symbol.  The symbol flags field is reserved for future use.  */
 852   unsigned long ms_info;
 853 } Elf32_Internal_Msym;
 854
 855 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
 856 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
 857 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
 858
 859 /* MIPS ELF reginfo swapping routines.  */
 860 extern void bfd_mips_elf64_swap_reginfo_in
 861   PARAMS ((bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *));
 862 extern void bfd_mips_elf64_swap_reginfo_out
 863   PARAMS ((bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *));
 864
 865 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
 866 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
 867 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
 868 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
 869 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
 870 #define OEX_FPDBUG      0x40000 /* Force floating-point debug mode.  */
 871 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
 872
 873 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
 874 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
 875 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
 876 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
 877 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
 878 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
 879
 880 /* Masks for the info word of an ODK_PAD descriptor.  */
 881 #define OPAD_PREFIX     0x01
 882 #define OPAD_POSTFIX    0x02
 883 #define OPAD_SYMBOL     0x04
 884
 885 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
 886 #define OHW_R4KEOP      0x01    /* R4000 end-of-page patch.  */
 887 #define OHW_R8KPFETCH   0x02    /* May need R8000 prefetch patch.  */
 888 #define OHW_R5KEOP      0x04    /* R5000 end-of-page patch.  */
 889 #define OHW_R5KCVTL     0x08    /* R5000 cvt.[ds].l bug (clean == 1).  */
 890
 891 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
 892 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
 893 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
 894
 895 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
 896 #define OHWA0_R4KEOP_CHECKED    0x00000001
 897 #define OHWA0_R4KEOP_CLEAN      0x00000002
 898 \f
 899
 900 #endif /* _ELF_MIPS_H */