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 /* -mips32 code.
 157    It is easier to treat MIPS32 as a machine rather than an architecture.  */
 158 #define E_MIPS_MACH_MIPS32      0x00890000
 159 \f
 160 /* Processor specific section indices.  These sections do not actually
 161    exist.  Symbols with a st_shndx field corresponding to one of these
 162    values have a special meaning.  */
 163
 164 /* Defined and allocated common symbol.  Value is virtual address.  If
 165    relocated, alignment must be preserved.  */
 166 #define SHN_MIPS_ACOMMON        0xff00
 167
 168 /* Defined and allocated text symbol.  Value is virtual address.
 169    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 170 #define SHN_MIPS_TEXT           0xff01
 171
 172 /* Defined and allocated data symbol.  Value is virtual address.
 173    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 174 #define SHN_MIPS_DATA           0xff02
 175
 176 /* Small common symbol.  */
 177 #define SHN_MIPS_SCOMMON        0xff03
 178
 179 /* Small undefined symbol.  */
 180 #define SHN_MIPS_SUNDEFINED     0xff04
 181 \f
 182 /* Processor specific section types.  */
 183
 184 /* Section contains the set of dynamic shared objects used when
 185    statically linking.  */
 186 #define SHT_MIPS_LIBLIST        0x70000000
 187
 188 /* I'm not sure what this is, but it's used on Irix 5.  */
 189 #define SHT_MIPS_MSYM           0x70000001
 190
 191 /* Section contains list of symbols whose definitions conflict with
 192    symbols defined in shared objects.  */
 193 #define SHT_MIPS_CONFLICT       0x70000002
 194
 195 /* Section contains the global pointer table.  */
 196 #define SHT_MIPS_GPTAB          0x70000003
 197
 198 /* Section contains microcode information.  The exact format is
 199    unspecified.  */
 200 #define SHT_MIPS_UCODE          0x70000004
 201
 202 /* Section contains some sort of debugging information.  The exact
 203    format is unspecified.  It's probably ECOFF symbols.  */
 204 #define SHT_MIPS_DEBUG          0x70000005
 205
 206 /* Section contains register usage information.  */
 207 #define SHT_MIPS_REGINFO        0x70000006
 208
 209 /* ??? */
 210 #define SHT_MIPS_PACKAGE        0x70000007
 211
 212 /* ??? */
 213 #define SHT_MIPS_PACKSYM        0x70000008
 214
 215 /* ??? */
 216 #define SHT_MIPS_RELD           0x70000009
 217
 218 /* Section contains interface information.  */
 219 #define SHT_MIPS_IFACE          0x7000000b
 220
 221 /* Section contains description of contents of another section.  */
 222 #define SHT_MIPS_CONTENT        0x7000000c
 223
 224 /* Section contains miscellaneous options.  */
 225 #define SHT_MIPS_OPTIONS        0x7000000d
 226
 227 /* ??? */
 228 #define SHT_MIPS_SHDR           0x70000010
 229
 230 /* ??? */
 231 #define SHT_MIPS_FDESC          0x70000011
 232
 233 /* ??? */
 234 #define SHT_MIPS_EXTSYM         0x70000012
 235
 236 /* ??? */
 237 #define SHT_MIPS_DENSE          0x70000013
 238
 239 /* ??? */
 240 #define SHT_MIPS_PDESC          0x70000014
 241
 242 /* ??? */
 243 #define SHT_MIPS_LOCSYM         0x70000015
 244
 245 /* ??? */
 246 #define SHT_MIPS_AUXSYM         0x70000016
 247
 248 /* ??? */
 249 #define SHT_MIPS_OPTSYM         0x70000017
 250
 251 /* ??? */
 252 #define SHT_MIPS_LOCSTR         0x70000018
 253
 254 /* ??? */
 255 #define SHT_MIPS_LINE           0x70000019
 256
 257 /* ??? */
 258 #define SHT_MIPS_RFDESC         0x7000001a
 259
 260 /* ??? */
 261 #define SHT_MIPS_DELTASYM       0x7000001b
 262
 263 /* ??? */
 264 #define SHT_MIPS_DELTAINST      0x7000001c
 265
 266 /* ??? */
 267 #define SHT_MIPS_DELTACLASS     0x7000001d
 268
 269 /* DWARF debugging section.  */
 270 #define SHT_MIPS_DWARF          0x7000001e
 271
 272 /* ??? */
 273 #define SHT_MIPS_DELTADECL      0x7000001f
 274
 275 /* List of libraries the binary depends on.  Includes a time stamp, version
 276    number.  */
 277 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 278
 279 /* Events section.  */
 280 #define SHT_MIPS_EVENTS         0x70000021
 281
 282 /* ??? */
 283 #define SHT_MIPS_TRANSLATE      0x70000022
 284
 285 /* ??? */
 286 #define SHT_MIPS_PIXIE          0x70000023
 287
 288 /* ??? */
 289 #define SHT_MIPS_XLATE          0x70000024
 290
 291 /* ??? */
 292 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 293
 294 /* ??? */
 295 #define SHT_MIPS_WHIRL          0x70000026
 296
 297 /* ??? */
 298 #define SHT_MIPS_EH_REGION      0x70000027
 299
 300 /* ??? */
 301 #define SHT_MIPS_XLATE_OLD      0x70000028
 302
 303 /* ??? */
 304 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 305
 306
 307 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 308    following structure.  The sh_link field is the section index of the
 309    string table.  The sh_info field is the number of entries in the
 310    section.  */
 311 typedef struct
 312 {
 313   /* String table index for name of shared object.  */
 314   unsigned long l_name;
 315   /* Time stamp.  */
 316   unsigned long l_time_stamp;
 317   /* Checksum of symbol names and common sizes.  */
 318   unsigned long l_checksum;
 319   /* String table index for version.  */
 320   unsigned long l_version;
 321   /* Flags.  */
 322   unsigned long l_flags;
 323 } Elf32_Lib;
 324
 325 /* The external version of Elf32_Lib.  */
 326 typedef struct
 327 {
 328   unsigned char l_name[4];
 329   unsigned char l_time_stamp[4];
 330   unsigned char l_checksum[4];
 331   unsigned char l_version[4];
 332   unsigned char l_flags[4];
 333 } Elf32_External_Lib;
 334
 335 /* The l_flags field of an Elf32_Lib structure may contain the
 336    following flags.  */
 337
 338 /* Require an exact match at runtime.  */
 339 #define LL_EXACT_MATCH          0x00000001
 340
 341 /* Ignore version incompatibilities at runtime.  */
 342 #define LL_IGNORE_INT_VER       0x00000002
 343
 344 /* Require matching minor version number.  */
 345 #define LL_REQUIRE_MINOR        0x00000004
 346
 347 /* ??? */
 348 #define LL_EXPORTS              0x00000008
 349
 350 /* Delay loading of this library until really needed.  */
 351 #define LL_DELAY_LOAD           0x00000010
 352
 353 /* ??? Delta C++ stuff ??? */
 354 #define LL_DELTA                0x00000020
 355
 356
 357 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 358    .dynsym section.  Each element has the following type.  */
 359 typedef unsigned long Elf32_Conflict;
 360 typedef unsigned char Elf32_External_Conflict[4];
 361
 362 typedef unsigned long Elf64_Conflict;
 363 typedef unsigned char Elf64_External_Conflict[8];
 364
 365 /* A section of type SHT_MIPS_GPTAB contains information about how
 366    much GP space would be required for different -G arguments.  This
 367    information is only used so that the linker can provide informative
 368    suggestions as to the best -G value to use.  The sh_info field is
 369    the index of the section for which this information applies.  The
 370    contents of the section are an array of the following union.  The
 371    first element uses the gt_header field.  The remaining elements use
 372    the gt_entry field.  */
 373 typedef union
 374 {
 375   struct
 376     {
 377       /* -G value actually used for this object file.  */
 378       unsigned long gt_current_g_value;
 379       /* Unused.  */
 380       unsigned long gt_unused;
 381     } gt_header;
 382   struct
 383     {
 384       /* If this -G argument has been used...  */
 385       unsigned long gt_g_value;
 386       /* ...this many GP section bytes would be required.  */
 387       unsigned long gt_bytes;
 388     } gt_entry;
 389 } Elf32_gptab;
 390
 391 /* The external version of Elf32_gptab.  */
 392
 393 typedef union
 394 {
 395   struct
 396     {
 397       unsigned char gt_current_g_value[4];
 398       unsigned char gt_unused[4];
 399     } gt_header;
 400   struct
 401     {
 402       unsigned char gt_g_value[4];
 403       unsigned char gt_bytes[4];
 404     } gt_entry;
 405 } Elf32_External_gptab;
 406
 407 /* A section of type SHT_MIPS_REGINFO contains the following
 408    structure.  */
 409 typedef struct
 410 {
 411   /* Mask of general purpose registers used.  */
 412   unsigned long ri_gprmask;
 413   /* Mask of co-processor registers used.  */
 414   unsigned long ri_cprmask[4];
 415   /* GP register value for this object file.  */
 416   long ri_gp_value;
 417 } Elf32_RegInfo;
 418
 419 /* The external version of the Elf_RegInfo structure.  */
 420 typedef struct
 421 {
 422   unsigned char ri_gprmask[4];
 423   unsigned char ri_cprmask[4][4];
 424   unsigned char ri_gp_value[4];
 425 } Elf32_External_RegInfo;
 426
 427 /* MIPS ELF .reginfo swapping routines.  */
 428 extern void bfd_mips_elf32_swap_reginfo_in
 429   PARAMS ((bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *));
 430 extern void bfd_mips_elf32_swap_reginfo_out
 431   PARAMS ((bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *));
 432 \f
 433 /* Processor specific section flags.  */
 434
 435 /* This section must be in the global data area.  */
 436 #define SHF_MIPS_GPREL          0x10000000
 437
 438 /* This section should be merged.  */
 439 #define SHF_MIPS_MERGE          0x20000000
 440
 441 /* This section contains 32 bit addresses.  */
 442 #define SHF_MIPS_ADDR32         0x40000000
 443
 444 /* This section contains 64 bit addresses.  */
 445 #define SHF_MIPS_ADDR64         0x80000000
 446
 447 /* This section may not be stripped.  */
 448 #define SHF_MIPS_NOSTRIP        0x08000000
 449
 450 /* This section is local to threads.  */
 451 #define SHF_MIPS_LOCAL          0x04000000
 452
 453 /* Linker should generate implicit weak names for this section.  */
 454 #define SHF_MIPS_NAMES          0x02000000
 455 \f
 456 /* Processor specific program header types.  */
 457
 458 /* Register usage information.  Identifies one .reginfo section.  */
 459 #define PT_MIPS_REGINFO         0x70000000
 460
 461 /* Runtime procedure table.  */
 462 #define PT_MIPS_RTPROC          0x70000001
 463
 464 /* Options (for what ???).  */
 465 #define PT_MIPS_OPTIONS         0x70000002
 466 \f
 467 /* Processor specific dynamic array tags.  */
 468
 469 /* 32 bit version number for runtime linker interface.  */
 470 #define DT_MIPS_RLD_VERSION     0x70000001
 471
 472 /* Time stamp.  */
 473 #define DT_MIPS_TIME_STAMP      0x70000002
 474
 475 /* Checksum of external strings and common sizes.  */
 476 #define DT_MIPS_ICHECKSUM       0x70000003
 477
 478 /* Index of version string in string table.  */
 479 #define DT_MIPS_IVERSION        0x70000004
 480
 481 /* 32 bits of flags.  */
 482 #define DT_MIPS_FLAGS           0x70000005
 483
 484 /* Base address of the segment.  */
 485 #define DT_MIPS_BASE_ADDRESS    0x70000006
 486
 487 /* ??? */
 488 #define DT_MIPS_MSYM            0x70000007
 489
 490 /* Address of .conflict section.  */
 491 #define DT_MIPS_CONFLICT        0x70000008
 492
 493 /* Address of .liblist section.  */
 494 #define DT_MIPS_LIBLIST         0x70000009
 495
 496 /* Number of local global offset table entries.  */
 497 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 498
 499 /* Number of entries in the .conflict section.  */
 500 #define DT_MIPS_CONFLICTNO      0x7000000b
 501
 502 /* Number of entries in the .liblist section.  */
 503 #define DT_MIPS_LIBLISTNO       0x70000010
 504
 505 /* Number of entries in the .dynsym section.  */
 506 #define DT_MIPS_SYMTABNO        0x70000011
 507
 508 /* Index of first external dynamic symbol not referenced locally.  */
 509 #define DT_MIPS_UNREFEXTNO      0x70000012
 510
 511 /* Index of first dynamic symbol in global offset table.  */
 512 #define DT_MIPS_GOTSYM          0x70000013
 513
 514 /* Number of page table entries in global offset table.  */
 515 #define DT_MIPS_HIPAGENO        0x70000014
 516
 517 /* Address of run time loader map, used for debugging.  */
 518 #define DT_MIPS_RLD_MAP         0x70000016
 519
 520 /* Delta C++ class definition.  */
 521 #define DT_MIPS_DELTA_CLASS     0x70000017
 522
 523 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 524 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 525
 526 /* Delta C++ class instances.  */
 527 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 528
 529 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 530 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 531
 532 /* Delta relocations.  */
 533 #define DT_MIPS_DELTA_RELOC     0x7000001b
 534
 535 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 536 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 537
 538 /* Delta symbols that Delta relocations refer to.  */
 539 #define DT_MIPS_DELTA_SYM       0x7000001d
 540
 541 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 542 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 543
 544 /* Delta symbols that hold class declarations.  */
 545 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 546
 547 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 548 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 549
 550 /* Flags indicating information about C++ flavor.  */
 551 #define DT_MIPS_CXX_FLAGS       0x70000022
 552
 553 /* Pixie information (???).  */
 554 #define DT_MIPS_PIXIE_INIT      0x70000023
 555
 556 /* ??? */
 557 #define DT_MIPS_SYMBOL_LIB      0x70000024
 558
 559 /* ??? */
 560 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 561
 562 /* ??? */
 563 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 564
 565 /* ??? */
 566 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 567
 568 /* ??? */
 569 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 570
 571 /* Address of `.MIPS.options'.  */
 572 #define DT_MIPS_OPTIONS         0x70000029
 573
 574 /* Address of `.interface'.  */
 575 #define DT_MIPS_INTERFACE       0x7000002a
 576
 577 /* ??? */
 578 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 579
 580 /* Size of the .interface section.  */
 581 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 582
 583 /* Size of rld_text_resolve function stored in the GOT.  */
 584 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 585
 586 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 587 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 588
 589 /* Size of compact relocation section (O32).  */
 590 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 591
 592 /* GP value for auxiliary GOTs.  */
 593 #define DT_MIPS_GP_VALUE        0x70000030
 594
 595 /* Address of auxiliary .dynamic.  */
 596 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 597 \f
 598 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 599
 600 /* No flags.  */
 601 #define RHF_NONE                0x00000000
 602
 603 /* Uses shortcut pointers.  */
 604 #define RHF_QUICKSTART          0x00000001
 605
 606 /* Hash size is not a power of two.  */
 607 #define RHF_NOTPOT              0x00000002
 608
 609 /* Ignore LD_LIBRARY_PATH.  */
 610 #define RHS_NO_LIBRARY_REPLACEMENT \
 611                                 0x00000004
 612
 613 #define RHF_NO_MOVE                0x00000008
 614 #define RHF_SGI_ONLY               0x00000010
 615 #define RHF_GUARANTEE_INIT         0x00000020
 616 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 617 #define RHF_GUARANTEE_START_INIT   0x00000080
 618 #define RHF_PIXIE                  0x00000100
 619 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 620 #define RHF_REQUICKSTART           0x00000400
 621 #define RHF_REQUICKSTARTED         0x00000800
 622 #define RHF_CORD                   0x00001000
 623 #define RHF_NO_UNRES_UNDEF         0x00002000
 624 #define RHF_RLD_ORDER_SAFE         0x00004000
 625 \f
 626 /* Special values for the st_other field in the symbol table.  These
 627    are used in an Irix 5 dynamic symbol table.  */
 628
 629 #define STO_DEFAULT             STV_DEFAULT
 630 #define STO_INTERNAL            STV_INTERNAL
 631 #define STO_HIDDEN              STV_HIDDEN
 632 #define STO_PROTECTED           STV_PROTECTED
 633
 634 /* This value is used for a mips16 .text symbol.  */
 635 #define STO_MIPS16              0xf0
 636 \f
 637 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 638    relocation entry specifies up to three actual relocations, all at
 639    the same address.  The first relocation which required a symbol
 640    uses the symbol in the r_sym field.  The second relocation which
 641    requires a symbol uses the symbol in the r_ssym field.  If all
 642    three relocations require a symbol, the third one uses a zero
 643    value.  */
 644
 645 /* An entry in a 64 bit SHT_REL section.  */
 646
 647 typedef struct
 648 {
 649   /* Address of relocation.  */
 650   unsigned char r_offset[8];
 651   /* Symbol index.  */
 652   unsigned char r_sym[4];
 653   /* Special symbol.  */
 654   unsigned char r_ssym[1];
 655   /* Third relocation.  */
 656   unsigned char r_type3[1];
 657   /* Second relocation.  */
 658   unsigned char r_type2[1];
 659   /* First relocation.  */
 660   unsigned char r_type[1];
 661 } Elf64_Mips_External_Rel;
 662
 663 typedef struct
 664 {
 665   /* Address of relocation.  */
 666   bfd_vma r_offset;
 667   /* Symbol index.  */
 668   unsigned long r_sym;
 669   /* Special symbol.  */
 670   unsigned char r_ssym;
 671   /* Third relocation.  */
 672   unsigned char r_type3;
 673   /* Second relocation.  */
 674   unsigned char r_type2;
 675   /* First relocation.  */
 676   unsigned char r_type;
 677 } Elf64_Mips_Internal_Rel;
 678
 679 /* An entry in a 64 bit SHT_RELA section.  */
 680
 681 typedef struct
 682 {
 683   /* Address of relocation.  */
 684   unsigned char r_offset[8];
 685   /* Symbol index.  */
 686   unsigned char r_sym[4];
 687   /* Special symbol.  */
 688   unsigned char r_ssym[1];
 689   /* Third relocation.  */
 690   unsigned char r_type3[1];
 691   /* Second relocation.  */
 692   unsigned char r_type2[1];
 693   /* First relocation.  */
 694   unsigned char r_type[1];
 695   /* Addend.  */
 696   unsigned char r_addend[8];
 697 } Elf64_Mips_External_Rela;
 698
 699 typedef struct
 700 {
 701   /* Address of relocation.  */
 702   bfd_vma r_offset;
 703   /* Symbol index.  */
 704   unsigned long r_sym;
 705   /* Special symbol.  */
 706   unsigned char r_ssym;
 707   /* Third relocation.  */
 708   unsigned char r_type3;
 709   /* Second relocation.  */
 710   unsigned char r_type2;
 711   /* First relocation.  */
 712   unsigned char r_type;
 713   /* Addend.  */
 714   bfd_signed_vma r_addend;
 715 } Elf64_Mips_Internal_Rela;
 716
 717 /* Values found in the r_ssym field of a relocation entry.  */
 718
 719 /* No relocation.  */
 720 #define RSS_UNDEF       0
 721
 722 /* Value of GP.  */
 723 #define RSS_GP          1
 724
 725 /* Value of GP in object being relocated.  */
 726 #define RSS_GP0         2
 727
 728 /* Address of location being relocated.  */
 729 #define RSS_LOC         3
 730 \f
 731 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 732    which starts with this header.  */
 733
 734 typedef struct
 735 {
 736   /* Type of option.  */
 737   unsigned char kind[1];
 738   /* Size of option descriptor, including header.  */
 739   unsigned char size[1];
 740   /* Section index of affected section, or 0 for global option.  */
 741   unsigned char section[2];
 742   /* Information specific to this kind of option.  */
 743   unsigned char info[4];
 744 } Elf_External_Options;
 745
 746 typedef struct
 747 {
 748   /* Type of option.  */
 749   unsigned char kind;
 750   /* Size of option descriptor, including header.  */
 751   unsigned char size;
 752   /* Section index of affected section, or 0 for global option.  */
 753   unsigned short section;
 754   /* Information specific to this kind of option.  */
 755   unsigned long info;
 756 } Elf_Internal_Options;
 757
 758 /* MIPS ELF option header swapping routines.  */
 759 extern void bfd_mips_elf_swap_options_in
 760   PARAMS ((bfd *, const Elf_External_Options *, Elf_Internal_Options *));
 761 extern void bfd_mips_elf_swap_options_out
 762   PARAMS ((bfd *, const Elf_Internal_Options *, Elf_External_Options *));
 763
 764 /* Values which may appear in the kind field of an Elf_Options
 765    structure.  */
 766
 767 /* Undefined.  */
 768 #define ODK_NULL        0
 769
 770 /* Register usage and GP value.  */
 771 #define ODK_REGINFO     1
 772
 773 /* Exception processing information.  */
 774 #define ODK_EXCEPTIONS  2
 775
 776 /* Section padding information.  */
 777 #define ODK_PAD         3
 778
 779 /* Hardware workarounds performed.  */
 780 #define ODK_HWPATCH     4
 781
 782 /* Fill value used by the linker.  */
 783 #define ODK_FILL        5
 784
 785 /* Reserved space for desktop tools.  */
 786 #define ODK_TAGS        6
 787
 788 /* Hardware workarounds, AND bits when merging.  */
 789 #define ODK_HWAND       7
 790
 791 /* Hardware workarounds, OR bits when merging.  */
 792 #define ODK_HWOR        8
 793
 794 /* GP group to use for text/data sections.  */
 795 #define ODK_GP_GROUP    9
 796
 797 /* ID information.  */
 798 #define ODK_IDENT       10
 799
 800 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
 801    structure.  In the 64 bit ABI, it is the following structure.  The
 802    info field of the options header is not used.  */
 803
 804 typedef struct
 805 {
 806   /* Mask of general purpose registers used.  */
 807   unsigned char ri_gprmask[4];
 808   /* Padding.  */
 809   unsigned char ri_pad[4];
 810   /* Mask of co-processor registers used.  */
 811   unsigned char ri_cprmask[4][4];
 812   /* GP register value for this object file.  */
 813   unsigned char ri_gp_value[8];
 814 } Elf64_External_RegInfo;
 815
 816 typedef struct
 817 {
 818   /* Mask of general purpose registers used.  */
 819   unsigned long ri_gprmask;
 820   /* Padding.  */
 821   unsigned long ri_pad;
 822   /* Mask of co-processor registers used.  */
 823   unsigned long ri_cprmask[4];
 824   /* GP register value for this object file.  */
 825   bfd_vma ri_gp_value;
 826 } Elf64_Internal_RegInfo;
 827
 828 typedef struct
 829 {
 830   /* The hash value computed from the name of the corresponding
 831      dynamic symbol.  */
 832   unsigned char ms_hash_value[4];
 833   /* Contains both the dynamic relocation index and the symbol flags
 834      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 835      to access the individual values.  The dynamic relocation index
 836      identifies the first entry in the .rel.dyn section that
 837      references the dynamic symbol corresponding to this msym entry.
 838      If the index is 0, no dynamic relocations are associated with the
 839      symbol.  The symbol flags field is reserved for future use.  */
 840   unsigned char ms_info[4];
 841 } Elf32_External_Msym;
 842
 843 typedef struct
 844 {
 845   /* The hash value computed from the name of the corresponding
 846      dynamic symbol.  */
 847   unsigned long ms_hash_value;
 848   /* Contains both the dynamic relocation index and the symbol flags
 849      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 850      to access the individual values.  The dynamic relocation index
 851      identifies the first entry in the .rel.dyn section that
 852      references the dynamic symbol corresponding to this msym entry.
 853      If the index is 0, no dynamic relocations are associated with the
 854      symbol.  The symbol flags field is reserved for future use.  */
 855   unsigned long ms_info;
 856 } Elf32_Internal_Msym;
 857
 858 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
 859 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
 860 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
 861
 862 /* MIPS ELF reginfo swapping routines.  */
 863 extern void bfd_mips_elf64_swap_reginfo_in
 864   PARAMS ((bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *));
 865 extern void bfd_mips_elf64_swap_reginfo_out
 866   PARAMS ((bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *));
 867
 868 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
 869 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
 870 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
 871 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
 872 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
 873 #define OEX_FPDBUG      0x40000 /* Force floating-point debug mode.  */
 874 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
 875
 876 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
 877 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
 878 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
 879 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
 880 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
 881 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
 882
 883 /* Masks for the info word of an ODK_PAD descriptor.  */
 884 #define OPAD_PREFIX     0x01
 885 #define OPAD_POSTFIX    0x02
 886 #define OPAD_SYMBOL     0x04
 887
 888 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
 889 #define OHW_R4KEOP      0x01    /* R4000 end-of-page patch.  */
 890 #define OHW_R8KPFETCH   0x02    /* May need R8000 prefetch patch.  */
 891 #define OHW_R5KEOP      0x04    /* R5000 end-of-page patch.  */
 892 #define OHW_R5KCVTL     0x08    /* R5000 cvt.[ds].l bug (clean == 1).  */
 893
 894 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
 895 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
 896 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
 897
 898 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
 899 #define OHWA0_R4KEOP_CHECKED    0x00000001
 900 #define OHWA0_R4KEOP_CLEAN      0x00000002
 901 \f
 902
 903 #endif /* _ELF_MIPS_H */