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 /* -mips5 code.  */
 125 #define E_MIPS_ARCH_5           0x40000000
 126
 127 /* -mips32 code.  */
 128 #define E_MIPS_ARCH_32          0x50000000
 129
 130 /* -mips64 code.  */
 131 #define E_MIPS_ARCH_64          0x60000000
 132
 133 /* The ABI of the file.  Also see EF_MIPS_ABI2 above. */
 134 #define EF_MIPS_ABI             0x0000F000
 135
 136 /* The original o32 abi. */
 137 #define E_MIPS_ABI_O32          0x00001000
 138
 139 /* O32 extended to work on 64 bit architectures */
 140 #define E_MIPS_ABI_O64          0x00002000
 141
 142 /* EABI in 32 bit mode */
 143 #define E_MIPS_ABI_EABI32       0x00003000
 144
 145 /* EABI in 64 bit mode */
 146 #define E_MIPS_ABI_EABI64       0x00004000
 147
 148
 149 /* Machine variant if we know it.  This field was invented at Cygnus,
 150    but it is hoped that other vendors will adopt it.  If some standard
 151    is developed, this code should be changed to follow it. */
 152
 153 #define EF_MIPS_MACH            0x00FF0000
 154
 155 /* Cygnus is choosing values between 80 and 9F;
 156    00 - 7F should be left for a future standard;
 157    the rest are open. */
 158
 159 #define E_MIPS_MACH_3900        0x00810000
 160
 161 #define E_MIPS_MACH_4010        0x00820000
 162 #define E_MIPS_MACH_4100        0x00830000
 163 #define E_MIPS_MACH_4650        0x00850000
 164 #define E_MIPS_MACH_4111        0x00880000
 165 #define E_MIPS_MACH_MIPS32_4K   0x00890000
 166 #define E_MIPS_MACH_SB1         0x008a0000
 167 \f
 168 /* Processor specific section indices.  These sections do not actually
 169    exist.  Symbols with a st_shndx field corresponding to one of these
 170    values have a special meaning.  */
 171
 172 /* Defined and allocated common symbol.  Value is virtual address.  If
 173    relocated, alignment must be preserved.  */
 174 #define SHN_MIPS_ACOMMON        0xff00
 175
 176 /* Defined and allocated text symbol.  Value is virtual address.
 177    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 178 #define SHN_MIPS_TEXT           0xff01
 179
 180 /* Defined and allocated data symbol.  Value is virtual address.
 181    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 182 #define SHN_MIPS_DATA           0xff02
 183
 184 /* Small common symbol.  */
 185 #define SHN_MIPS_SCOMMON        0xff03
 186
 187 /* Small undefined symbol.  */
 188 #define SHN_MIPS_SUNDEFINED     0xff04
 189 \f
 190 /* Processor specific section types.  */
 191
 192 /* Section contains the set of dynamic shared objects used when
 193    statically linking.  */
 194 #define SHT_MIPS_LIBLIST        0x70000000
 195
 196 /* I'm not sure what this is, but it's used on Irix 5.  */
 197 #define SHT_MIPS_MSYM           0x70000001
 198
 199 /* Section contains list of symbols whose definitions conflict with
 200    symbols defined in shared objects.  */
 201 #define SHT_MIPS_CONFLICT       0x70000002
 202
 203 /* Section contains the global pointer table.  */
 204 #define SHT_MIPS_GPTAB          0x70000003
 205
 206 /* Section contains microcode information.  The exact format is
 207    unspecified.  */
 208 #define SHT_MIPS_UCODE          0x70000004
 209
 210 /* Section contains some sort of debugging information.  The exact
 211    format is unspecified.  It's probably ECOFF symbols.  */
 212 #define SHT_MIPS_DEBUG          0x70000005
 213
 214 /* Section contains register usage information.  */
 215 #define SHT_MIPS_REGINFO        0x70000006
 216
 217 /* ??? */
 218 #define SHT_MIPS_PACKAGE        0x70000007
 219
 220 /* ??? */
 221 #define SHT_MIPS_PACKSYM        0x70000008
 222
 223 /* ??? */
 224 #define SHT_MIPS_RELD           0x70000009
 225
 226 /* Section contains interface information.  */
 227 #define SHT_MIPS_IFACE          0x7000000b
 228
 229 /* Section contains description of contents of another section.  */
 230 #define SHT_MIPS_CONTENT        0x7000000c
 231
 232 /* Section contains miscellaneous options.  */
 233 #define SHT_MIPS_OPTIONS        0x7000000d
 234
 235 /* ??? */
 236 #define SHT_MIPS_SHDR           0x70000010
 237
 238 /* ??? */
 239 #define SHT_MIPS_FDESC          0x70000011
 240
 241 /* ??? */
 242 #define SHT_MIPS_EXTSYM         0x70000012
 243
 244 /* ??? */
 245 #define SHT_MIPS_DENSE          0x70000013
 246
 247 /* ??? */
 248 #define SHT_MIPS_PDESC          0x70000014
 249
 250 /* ??? */
 251 #define SHT_MIPS_LOCSYM         0x70000015
 252
 253 /* ??? */
 254 #define SHT_MIPS_AUXSYM         0x70000016
 255
 256 /* ??? */
 257 #define SHT_MIPS_OPTSYM         0x70000017
 258
 259 /* ??? */
 260 #define SHT_MIPS_LOCSTR         0x70000018
 261
 262 /* ??? */
 263 #define SHT_MIPS_LINE           0x70000019
 264
 265 /* ??? */
 266 #define SHT_MIPS_RFDESC         0x7000001a
 267
 268 /* ??? */
 269 #define SHT_MIPS_DELTASYM       0x7000001b
 270
 271 /* ??? */
 272 #define SHT_MIPS_DELTAINST      0x7000001c
 273
 274 /* ??? */
 275 #define SHT_MIPS_DELTACLASS     0x7000001d
 276
 277 /* DWARF debugging section.  */
 278 #define SHT_MIPS_DWARF          0x7000001e
 279
 280 /* ??? */
 281 #define SHT_MIPS_DELTADECL      0x7000001f
 282
 283 /* List of libraries the binary depends on.  Includes a time stamp, version
 284    number.  */
 285 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 286
 287 /* Events section.  */
 288 #define SHT_MIPS_EVENTS         0x70000021
 289
 290 /* ??? */
 291 #define SHT_MIPS_TRANSLATE      0x70000022
 292
 293 /* ??? */
 294 #define SHT_MIPS_PIXIE          0x70000023
 295
 296 /* ??? */
 297 #define SHT_MIPS_XLATE          0x70000024
 298
 299 /* ??? */
 300 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 301
 302 /* ??? */
 303 #define SHT_MIPS_WHIRL          0x70000026
 304
 305 /* ??? */
 306 #define SHT_MIPS_EH_REGION      0x70000027
 307
 308 /* ??? */
 309 #define SHT_MIPS_XLATE_OLD      0x70000028
 310
 311 /* ??? */
 312 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 313
 314
 315 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 316    following structure.  The sh_link field is the section index of the
 317    string table.  The sh_info field is the number of entries in the
 318    section.  */
 319 typedef struct
 320 {
 321   /* String table index for name of shared object.  */
 322   unsigned long l_name;
 323   /* Time stamp.  */
 324   unsigned long l_time_stamp;
 325   /* Checksum of symbol names and common sizes.  */
 326   unsigned long l_checksum;
 327   /* String table index for version.  */
 328   unsigned long l_version;
 329   /* Flags.  */
 330   unsigned long l_flags;
 331 } Elf32_Lib;
 332
 333 /* The external version of Elf32_Lib.  */
 334 typedef struct
 335 {
 336   unsigned char l_name[4];
 337   unsigned char l_time_stamp[4];
 338   unsigned char l_checksum[4];
 339   unsigned char l_version[4];
 340   unsigned char l_flags[4];
 341 } Elf32_External_Lib;
 342
 343 /* The l_flags field of an Elf32_Lib structure may contain the
 344    following flags.  */
 345
 346 /* Require an exact match at runtime.  */
 347 #define LL_EXACT_MATCH          0x00000001
 348
 349 /* Ignore version incompatibilities at runtime.  */
 350 #define LL_IGNORE_INT_VER       0x00000002
 351
 352 /* Require matching minor version number.  */
 353 #define LL_REQUIRE_MINOR        0x00000004
 354
 355 /* ??? */
 356 #define LL_EXPORTS              0x00000008
 357
 358 /* Delay loading of this library until really needed.  */
 359 #define LL_DELAY_LOAD           0x00000010
 360
 361 /* ??? Delta C++ stuff ??? */
 362 #define LL_DELTA                0x00000020
 363
 364
 365 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 366    .dynsym section.  Each element has the following type.  */
 367 typedef unsigned long Elf32_Conflict;
 368 typedef unsigned char Elf32_External_Conflict[4];
 369
 370 typedef unsigned long Elf64_Conflict;
 371 typedef unsigned char Elf64_External_Conflict[8];
 372
 373 /* A section of type SHT_MIPS_GPTAB contains information about how
 374    much GP space would be required for different -G arguments.  This
 375    information is only used so that the linker can provide informative
 376    suggestions as to the best -G value to use.  The sh_info field is
 377    the index of the section for which this information applies.  The
 378    contents of the section are an array of the following union.  The
 379    first element uses the gt_header field.  The remaining elements use
 380    the gt_entry field.  */
 381 typedef union
 382 {
 383   struct
 384     {
 385       /* -G value actually used for this object file.  */
 386       unsigned long gt_current_g_value;
 387       /* Unused.  */
 388       unsigned long gt_unused;
 389     } gt_header;
 390   struct
 391     {
 392       /* If this -G argument has been used...  */
 393       unsigned long gt_g_value;
 394       /* ...this many GP section bytes would be required.  */
 395       unsigned long gt_bytes;
 396     } gt_entry;
 397 } Elf32_gptab;
 398
 399 /* The external version of Elf32_gptab.  */
 400
 401 typedef union
 402 {
 403   struct
 404     {
 405       unsigned char gt_current_g_value[4];
 406       unsigned char gt_unused[4];
 407     } gt_header;
 408   struct
 409     {
 410       unsigned char gt_g_value[4];
 411       unsigned char gt_bytes[4];
 412     } gt_entry;
 413 } Elf32_External_gptab;
 414
 415 /* A section of type SHT_MIPS_REGINFO contains the following
 416    structure.  */
 417 typedef struct
 418 {
 419   /* Mask of general purpose registers used.  */
 420   unsigned long ri_gprmask;
 421   /* Mask of co-processor registers used.  */
 422   unsigned long ri_cprmask[4];
 423   /* GP register value for this object file.  */
 424   long ri_gp_value;
 425 } Elf32_RegInfo;
 426
 427 /* The external version of the Elf_RegInfo structure.  */
 428 typedef struct
 429 {
 430   unsigned char ri_gprmask[4];
 431   unsigned char ri_cprmask[4][4];
 432   unsigned char ri_gp_value[4];
 433 } Elf32_External_RegInfo;
 434
 435 /* MIPS ELF .reginfo swapping routines.  */
 436 extern void bfd_mips_elf32_swap_reginfo_in
 437   PARAMS ((bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *));
 438 extern void bfd_mips_elf32_swap_reginfo_out
 439   PARAMS ((bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *));
 440 \f
 441 /* Processor specific section flags.  */
 442
 443 /* This section must be in the global data area.  */
 444 #define SHF_MIPS_GPREL          0x10000000
 445
 446 /* This section should be merged.  */
 447 #define SHF_MIPS_MERGE          0x20000000
 448
 449 /* This section contains 32 bit addresses.  */
 450 #define SHF_MIPS_ADDR32         0x40000000
 451
 452 /* This section contains 64 bit addresses.  */
 453 #define SHF_MIPS_ADDR64         0x80000000
 454
 455 /* This section may not be stripped.  */
 456 #define SHF_MIPS_NOSTRIP        0x08000000
 457
 458 /* This section is local to threads.  */
 459 #define SHF_MIPS_LOCAL          0x04000000
 460
 461 /* Linker should generate implicit weak names for this section.  */
 462 #define SHF_MIPS_NAMES          0x02000000
 463 \f
 464 /* Processor specific program header types.  */
 465
 466 /* Register usage information.  Identifies one .reginfo section.  */
 467 #define PT_MIPS_REGINFO         0x70000000
 468
 469 /* Runtime procedure table.  */
 470 #define PT_MIPS_RTPROC          0x70000001
 471
 472 /* Options (for what ???).  */
 473 #define PT_MIPS_OPTIONS         0x70000002
 474 \f
 475 /* Processor specific dynamic array tags.  */
 476
 477 /* 32 bit version number for runtime linker interface.  */
 478 #define DT_MIPS_RLD_VERSION     0x70000001
 479
 480 /* Time stamp.  */
 481 #define DT_MIPS_TIME_STAMP      0x70000002
 482
 483 /* Checksum of external strings and common sizes.  */
 484 #define DT_MIPS_ICHECKSUM       0x70000003
 485
 486 /* Index of version string in string table.  */
 487 #define DT_MIPS_IVERSION        0x70000004
 488
 489 /* 32 bits of flags.  */
 490 #define DT_MIPS_FLAGS           0x70000005
 491
 492 /* Base address of the segment.  */
 493 #define DT_MIPS_BASE_ADDRESS    0x70000006
 494
 495 /* ??? */
 496 #define DT_MIPS_MSYM            0x70000007
 497
 498 /* Address of .conflict section.  */
 499 #define DT_MIPS_CONFLICT        0x70000008
 500
 501 /* Address of .liblist section.  */
 502 #define DT_MIPS_LIBLIST         0x70000009
 503
 504 /* Number of local global offset table entries.  */
 505 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 506
 507 /* Number of entries in the .conflict section.  */
 508 #define DT_MIPS_CONFLICTNO      0x7000000b
 509
 510 /* Number of entries in the .liblist section.  */
 511 #define DT_MIPS_LIBLISTNO       0x70000010
 512
 513 /* Number of entries in the .dynsym section.  */
 514 #define DT_MIPS_SYMTABNO        0x70000011
 515
 516 /* Index of first external dynamic symbol not referenced locally.  */
 517 #define DT_MIPS_UNREFEXTNO      0x70000012
 518
 519 /* Index of first dynamic symbol in global offset table.  */
 520 #define DT_MIPS_GOTSYM          0x70000013
 521
 522 /* Number of page table entries in global offset table.  */
 523 #define DT_MIPS_HIPAGENO        0x70000014
 524
 525 /* Address of run time loader map, used for debugging.  */
 526 #define DT_MIPS_RLD_MAP         0x70000016
 527
 528 /* Delta C++ class definition.  */
 529 #define DT_MIPS_DELTA_CLASS     0x70000017
 530
 531 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 532 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 533
 534 /* Delta C++ class instances.  */
 535 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 536
 537 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 538 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 539
 540 /* Delta relocations.  */
 541 #define DT_MIPS_DELTA_RELOC     0x7000001b
 542
 543 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 544 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 545
 546 /* Delta symbols that Delta relocations refer to.  */
 547 #define DT_MIPS_DELTA_SYM       0x7000001d
 548
 549 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 550 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 551
 552 /* Delta symbols that hold class declarations.  */
 553 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 554
 555 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 556 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 557
 558 /* Flags indicating information about C++ flavor.  */
 559 #define DT_MIPS_CXX_FLAGS       0x70000022
 560
 561 /* Pixie information (???).  */
 562 #define DT_MIPS_PIXIE_INIT      0x70000023
 563
 564 /* ??? */
 565 #define DT_MIPS_SYMBOL_LIB      0x70000024
 566
 567 /* ??? */
 568 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 569
 570 /* ??? */
 571 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 572
 573 /* ??? */
 574 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 575
 576 /* ??? */
 577 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 578
 579 /* Address of `.MIPS.options'.  */
 580 #define DT_MIPS_OPTIONS         0x70000029
 581
 582 /* Address of `.interface'.  */
 583 #define DT_MIPS_INTERFACE       0x7000002a
 584
 585 /* ??? */
 586 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 587
 588 /* Size of the .interface section.  */
 589 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 590
 591 /* Size of rld_text_resolve function stored in the GOT.  */
 592 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 593
 594 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 595 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 596
 597 /* Size of compact relocation section (O32).  */
 598 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 599
 600 /* GP value for auxiliary GOTs.  */
 601 #define DT_MIPS_GP_VALUE        0x70000030
 602
 603 /* Address of auxiliary .dynamic.  */
 604 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 605 \f
 606 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 607
 608 /* No flags.  */
 609 #define RHF_NONE                0x00000000
 610
 611 /* Uses shortcut pointers.  */
 612 #define RHF_QUICKSTART          0x00000001
 613
 614 /* Hash size is not a power of two.  */
 615 #define RHF_NOTPOT              0x00000002
 616
 617 /* Ignore LD_LIBRARY_PATH.  */
 618 #define RHS_NO_LIBRARY_REPLACEMENT \
 619                                 0x00000004
 620
 621 #define RHF_NO_MOVE                0x00000008
 622 #define RHF_SGI_ONLY               0x00000010
 623 #define RHF_GUARANTEE_INIT         0x00000020
 624 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 625 #define RHF_GUARANTEE_START_INIT   0x00000080
 626 #define RHF_PIXIE                  0x00000100
 627 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 628 #define RHF_REQUICKSTART           0x00000400
 629 #define RHF_REQUICKSTARTED         0x00000800
 630 #define RHF_CORD                   0x00001000
 631 #define RHF_NO_UNRES_UNDEF         0x00002000
 632 #define RHF_RLD_ORDER_SAFE         0x00004000
 633 \f
 634 /* Special values for the st_other field in the symbol table.  These
 635    are used in an Irix 5 dynamic symbol table.  */
 636
 637 #define STO_DEFAULT             STV_DEFAULT
 638 #define STO_INTERNAL            STV_INTERNAL
 639 #define STO_HIDDEN              STV_HIDDEN
 640 #define STO_PROTECTED           STV_PROTECTED
 641
 642 /* This value is used for a mips16 .text symbol.  */
 643 #define STO_MIPS16              0xf0
 644 \f
 645 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 646    relocation entry specifies up to three actual relocations, all at
 647    the same address.  The first relocation which required a symbol
 648    uses the symbol in the r_sym field.  The second relocation which
 649    requires a symbol uses the symbol in the r_ssym field.  If all
 650    three relocations require a symbol, the third one uses a zero
 651    value.  */
 652
 653 /* An entry in a 64 bit SHT_REL section.  */
 654
 655 typedef struct
 656 {
 657   /* Address of relocation.  */
 658   unsigned char r_offset[8];
 659   /* Symbol index.  */
 660   unsigned char r_sym[4];
 661   /* Special symbol.  */
 662   unsigned char r_ssym[1];
 663   /* Third relocation.  */
 664   unsigned char r_type3[1];
 665   /* Second relocation.  */
 666   unsigned char r_type2[1];
 667   /* First relocation.  */
 668   unsigned char r_type[1];
 669 } Elf64_Mips_External_Rel;
 670
 671 typedef struct
 672 {
 673   /* Address of relocation.  */
 674   bfd_vma r_offset;
 675   /* Symbol index.  */
 676   unsigned long r_sym;
 677   /* Special symbol.  */
 678   unsigned char r_ssym;
 679   /* Third relocation.  */
 680   unsigned char r_type3;
 681   /* Second relocation.  */
 682   unsigned char r_type2;
 683   /* First relocation.  */
 684   unsigned char r_type;
 685 } Elf64_Mips_Internal_Rel;
 686
 687 /* An entry in a 64 bit SHT_RELA section.  */
 688
 689 typedef struct
 690 {
 691   /* Address of relocation.  */
 692   unsigned char r_offset[8];
 693   /* Symbol index.  */
 694   unsigned char r_sym[4];
 695   /* Special symbol.  */
 696   unsigned char r_ssym[1];
 697   /* Third relocation.  */
 698   unsigned char r_type3[1];
 699   /* Second relocation.  */
 700   unsigned char r_type2[1];
 701   /* First relocation.  */
 702   unsigned char r_type[1];
 703   /* Addend.  */
 704   unsigned char r_addend[8];
 705 } Elf64_Mips_External_Rela;
 706
 707 typedef struct
 708 {
 709   /* Address of relocation.  */
 710   bfd_vma r_offset;
 711   /* Symbol index.  */
 712   unsigned long r_sym;
 713   /* Special symbol.  */
 714   unsigned char r_ssym;
 715   /* Third relocation.  */
 716   unsigned char r_type3;
 717   /* Second relocation.  */
 718   unsigned char r_type2;
 719   /* First relocation.  */
 720   unsigned char r_type;
 721   /* Addend.  */
 722   bfd_signed_vma r_addend;
 723 } Elf64_Mips_Internal_Rela;
 724
 725 /* Values found in the r_ssym field of a relocation entry.  */
 726
 727 /* No relocation.  */
 728 #define RSS_UNDEF       0
 729
 730 /* Value of GP.  */
 731 #define RSS_GP          1
 732
 733 /* Value of GP in object being relocated.  */
 734 #define RSS_GP0         2
 735
 736 /* Address of location being relocated.  */
 737 #define RSS_LOC         3
 738 \f
 739 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 740    which starts with this header.  */
 741
 742 typedef struct
 743 {
 744   /* Type of option.  */
 745   unsigned char kind[1];
 746   /* Size of option descriptor, including header.  */
 747   unsigned char size[1];
 748   /* Section index of affected section, or 0 for global option.  */
 749   unsigned char section[2];
 750   /* Information specific to this kind of option.  */
 751   unsigned char info[4];
 752 } Elf_External_Options;
 753
 754 typedef struct
 755 {
 756   /* Type of option.  */
 757   unsigned char kind;
 758   /* Size of option descriptor, including header.  */
 759   unsigned char size;
 760   /* Section index of affected section, or 0 for global option.  */
 761   unsigned short section;
 762   /* Information specific to this kind of option.  */
 763   unsigned long info;
 764 } Elf_Internal_Options;
 765
 766 /* MIPS ELF option header swapping routines.  */
 767 extern void bfd_mips_elf_swap_options_in
 768   PARAMS ((bfd *, const Elf_External_Options *, Elf_Internal_Options *));
 769 extern void bfd_mips_elf_swap_options_out
 770   PARAMS ((bfd *, const Elf_Internal_Options *, Elf_External_Options *));
 771
 772 /* Values which may appear in the kind field of an Elf_Options
 773    structure.  */
 774
 775 /* Undefined.  */
 776 #define ODK_NULL        0
 777
 778 /* Register usage and GP value.  */
 779 #define ODK_REGINFO     1
 780
 781 /* Exception processing information.  */
 782 #define ODK_EXCEPTIONS  2
 783
 784 /* Section padding information.  */
 785 #define ODK_PAD         3
 786
 787 /* Hardware workarounds performed.  */
 788 #define ODK_HWPATCH     4
 789
 790 /* Fill value used by the linker.  */
 791 #define ODK_FILL        5
 792
 793 /* Reserved space for desktop tools.  */
 794 #define ODK_TAGS        6
 795
 796 /* Hardware workarounds, AND bits when merging.  */
 797 #define ODK_HWAND       7
 798
 799 /* Hardware workarounds, OR bits when merging.  */
 800 #define ODK_HWOR        8
 801
 802 /* GP group to use for text/data sections.  */
 803 #define ODK_GP_GROUP    9
 804
 805 /* ID information.  */
 806 #define ODK_IDENT       10
 807
 808 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
 809    structure.  In the 64 bit ABI, it is the following structure.  The
 810    info field of the options header is not used.  */
 811
 812 typedef struct
 813 {
 814   /* Mask of general purpose registers used.  */
 815   unsigned char ri_gprmask[4];
 816   /* Padding.  */
 817   unsigned char ri_pad[4];
 818   /* Mask of co-processor registers used.  */
 819   unsigned char ri_cprmask[4][4];
 820   /* GP register value for this object file.  */
 821   unsigned char ri_gp_value[8];
 822 } Elf64_External_RegInfo;
 823
 824 typedef struct
 825 {
 826   /* Mask of general purpose registers used.  */
 827   unsigned long ri_gprmask;
 828   /* Padding.  */
 829   unsigned long ri_pad;
 830   /* Mask of co-processor registers used.  */
 831   unsigned long ri_cprmask[4];
 832   /* GP register value for this object file.  */
 833   bfd_vma ri_gp_value;
 834 } Elf64_Internal_RegInfo;
 835
 836 typedef struct
 837 {
 838   /* The hash value computed from the name of the corresponding
 839      dynamic symbol.  */
 840   unsigned char ms_hash_value[4];
 841   /* Contains both the dynamic relocation index and the symbol flags
 842      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 843      to access the individual values.  The dynamic relocation index
 844      identifies the first entry in the .rel.dyn section that
 845      references the dynamic symbol corresponding to this msym entry.
 846      If the index is 0, no dynamic relocations are associated with the
 847      symbol.  The symbol flags field is reserved for future use.  */
 848   unsigned char ms_info[4];
 849 } Elf32_External_Msym;
 850
 851 typedef struct
 852 {
 853   /* The hash value computed from the name of the corresponding
 854      dynamic symbol.  */
 855   unsigned long ms_hash_value;
 856   /* Contains both the dynamic relocation index and the symbol flags
 857      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 858      to access the individual values.  The dynamic relocation index
 859      identifies the first entry in the .rel.dyn section that
 860      references the dynamic symbol corresponding to this msym entry.
 861      If the index is 0, no dynamic relocations are associated with the
 862      symbol.  The symbol flags field is reserved for future use.  */
 863   unsigned long ms_info;
 864 } Elf32_Internal_Msym;
 865
 866 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
 867 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
 868 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
 869
 870 /* MIPS ELF reginfo swapping routines.  */
 871 extern void bfd_mips_elf64_swap_reginfo_in
 872   PARAMS ((bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *));
 873 extern void bfd_mips_elf64_swap_reginfo_out
 874   PARAMS ((bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *));
 875
 876 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
 877 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
 878 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
 879 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
 880 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
 881 #define OEX_FPDBUG      0x40000 /* Force floating-point debug mode.  */
 882 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
 883
 884 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
 885 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
 886 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
 887 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
 888 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
 889 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
 890
 891 /* Masks for the info word of an ODK_PAD descriptor.  */
 892 #define OPAD_PREFIX     0x01
 893 #define OPAD_POSTFIX    0x02
 894 #define OPAD_SYMBOL     0x04
 895
 896 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
 897 #define OHW_R4KEOP      0x01    /* R4000 end-of-page patch.  */
 898 #define OHW_R8KPFETCH   0x02    /* May need R8000 prefetch patch.  */
 899 #define OHW_R5KEOP      0x04    /* R5000 end-of-page patch.  */
 900 #define OHW_R5KCVTL     0x08    /* R5000 cvt.[ds].l bug (clean == 1).  */
 901
 902 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
 903 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
 904 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
 905
 906 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
 907 #define OHWA0_R4KEOP_CHECKED    0x00000001
 908 #define OHWA0_R4KEOP_CLEAN      0x00000002
 909 \f
 910
 911 #endif /* _ELF_MIPS_H */