include/elf/mips.h

   1 /* MIPS ELF support for BFD.
   2    Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003
   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)           /* In Elf 64: alias R_MIPS_ADD */
  38   RELOC_NUMBER (R_MIPS_REL32, 3)        /* In Elf 64: alias R_MIPS_REL */
  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)      /* In Elf 64: alias R_MIPS_GPREL */
  43   RELOC_NUMBER (R_MIPS_LITERAL, 8)
  44   RELOC_NUMBER (R_MIPS_GOT16, 9)        /* In Elf 64: alias R_MIPS_GOT */
  45   RELOC_NUMBER (R_MIPS_PC16, 10)
  46   RELOC_NUMBER (R_MIPS_CALL16, 11)      /* In Elf 64: alias R_MIPS_CALL */
  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   /* FIXME: this relocation is used internally by gas.  */
  80   RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250)
  81   /* These are GNU extensions to enable C++ vtable garbage collection.  */
  82   RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253)
  83   RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254)
  84 END_RELOC_NUMBERS (R_MIPS_maxext)
  85
  86 /* Processor specific flags for the ELF header e_flags field.  */
  87
  88 /* At least one .noreorder directive appears in the source.  */
  89 #define EF_MIPS_NOREORDER       0x00000001
  90
  91 /* File contains position independent code.  */
  92 #define EF_MIPS_PIC             0x00000002
  93
  94 /* Code in file uses the standard calling sequence for calling
  95    position independent code.  */
  96 #define EF_MIPS_CPIC            0x00000004
  97
  98 /* ???  Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a.  */
  99 #define EF_MIPS_XGOT            0x00000008
 100
 101 /* Code in file uses UCODE (obsolete) */
 102 #define EF_MIPS_UCODE           0x00000010
 103
 104 /* Code in file uses new ABI (-n32 on Irix 6).  */
 105 #define EF_MIPS_ABI2            0x00000020
 106
 107 /* Process the .MIPS.options section first by ld */
 108 #define EF_MIPS_OPTIONS_FIRST   0x00000080
 109
 110 /* Architectural Extensions used by this file */
 111 #define EF_MIPS_ARCH_ASE        0x0f000000
 112
 113 /* Use MDMX multimedia extensions */
 114 #define EF_MIPS_ARCH_ASE_MDMX   0x08000000
 115
 116 /* Use MIPS-16 ISA extensions */
 117 #define EF_MIPS_ARCH_ASE_M16    0x04000000
 118
 119 /* Indicates code compiled for a 64-bit machine in 32-bit mode.
 120    (regs are 32-bits wide.) */
 121 #define EF_MIPS_32BITMODE       0x00000100
 122
 123 /* Four bit MIPS architecture field.  */
 124 #define EF_MIPS_ARCH            0xf0000000
 125
 126 /* -mips1 code.  */
 127 #define E_MIPS_ARCH_1           0x00000000
 128
 129 /* -mips2 code.  */
 130 #define E_MIPS_ARCH_2           0x10000000
 131
 132 /* -mips3 code.  */
 133 #define E_MIPS_ARCH_3           0x20000000
 134
 135 /* -mips4 code.  */
 136 #define E_MIPS_ARCH_4           0x30000000
 137
 138 /* -mips5 code.  */
 139 #define E_MIPS_ARCH_5           0x40000000
 140
 141 /* -mips32 code.  */
 142 #define E_MIPS_ARCH_32          0x50000000
 143
 144 /* -mips64 code.  */
 145 #define E_MIPS_ARCH_64          0x60000000
 146
 147 /* -mips32r2 code.  */
 148 #define E_MIPS_ARCH_32R2        0x70000000
 149
 150 /* -mips64r2 code.  */
 151 #define E_MIPS_ARCH_64R2        0x80000000
 152
 153 /* The ABI of the file.  Also see EF_MIPS_ABI2 above. */
 154 #define EF_MIPS_ABI             0x0000F000
 155
 156 /* The original o32 abi. */
 157 #define E_MIPS_ABI_O32          0x00001000
 158
 159 /* O32 extended to work on 64 bit architectures */
 160 #define E_MIPS_ABI_O64          0x00002000
 161
 162 /* EABI in 32 bit mode */
 163 #define E_MIPS_ABI_EABI32       0x00003000
 164
 165 /* EABI in 64 bit mode */
 166 #define E_MIPS_ABI_EABI64       0x00004000
 167
 168
 169 /* Machine variant if we know it.  This field was invented at Cygnus,
 170    but it is hoped that other vendors will adopt it.  If some standard
 171    is developed, this code should be changed to follow it. */
 172
 173 #define EF_MIPS_MACH            0x00FF0000
 174
 175 /* Cygnus is choosing values between 80 and 9F;
 176    00 - 7F should be left for a future standard;
 177    the rest are open. */
 178
 179 #define E_MIPS_MACH_3900        0x00810000
 180 #define E_MIPS_MACH_4010        0x00820000
 181 #define E_MIPS_MACH_4100        0x00830000
 182 #define E_MIPS_MACH_4650        0x00850000
 183 #define E_MIPS_MACH_4120        0x00870000
 184 #define E_MIPS_MACH_4111        0x00880000
 185 #define E_MIPS_MACH_SB1         0x008a0000
 186 #define E_MIPS_MACH_5400        0x00910000
 187 #define E_MIPS_MACH_5500        0x00980000
 188 \f
 189 /* Processor specific section indices.  These sections do not actually
 190    exist.  Symbols with a st_shndx field corresponding to one of these
 191    values have a special meaning.  */
 192
 193 /* Defined and allocated common symbol.  Value is virtual address.  If
 194    relocated, alignment must be preserved.  */
 195 #define SHN_MIPS_ACOMMON        0xff00
 196
 197 /* Defined and allocated text symbol.  Value is virtual address.
 198    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 199 #define SHN_MIPS_TEXT           0xff01
 200
 201 /* Defined and allocated data symbol.  Value is virtual address.
 202    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 203 #define SHN_MIPS_DATA           0xff02
 204
 205 /* Small common symbol.  */
 206 #define SHN_MIPS_SCOMMON        0xff03
 207
 208 /* Small undefined symbol.  */
 209 #define SHN_MIPS_SUNDEFINED     0xff04
 210 \f
 211 /* Processor specific section types.  */
 212
 213 /* Section contains the set of dynamic shared objects used when
 214    statically linking.  */
 215 #define SHT_MIPS_LIBLIST        0x70000000
 216
 217 /* I'm not sure what this is, but it's used on Irix 5.  */
 218 #define SHT_MIPS_MSYM           0x70000001
 219
 220 /* Section contains list of symbols whose definitions conflict with
 221    symbols defined in shared objects.  */
 222 #define SHT_MIPS_CONFLICT       0x70000002
 223
 224 /* Section contains the global pointer table.  */
 225 #define SHT_MIPS_GPTAB          0x70000003
 226
 227 /* Section contains microcode information.  The exact format is
 228    unspecified.  */
 229 #define SHT_MIPS_UCODE          0x70000004
 230
 231 /* Section contains some sort of debugging information.  The exact
 232    format is unspecified.  It's probably ECOFF symbols.  */
 233 #define SHT_MIPS_DEBUG          0x70000005
 234
 235 /* Section contains register usage information.  */
 236 #define SHT_MIPS_REGINFO        0x70000006
 237
 238 /* ??? */
 239 #define SHT_MIPS_PACKAGE        0x70000007
 240
 241 /* ??? */
 242 #define SHT_MIPS_PACKSYM        0x70000008
 243
 244 /* ??? */
 245 #define SHT_MIPS_RELD           0x70000009
 246
 247 /* Section contains interface information.  */
 248 #define SHT_MIPS_IFACE          0x7000000b
 249
 250 /* Section contains description of contents of another section.  */
 251 #define SHT_MIPS_CONTENT        0x7000000c
 252
 253 /* Section contains miscellaneous options.  */
 254 #define SHT_MIPS_OPTIONS        0x7000000d
 255
 256 /* ??? */
 257 #define SHT_MIPS_SHDR           0x70000010
 258
 259 /* ??? */
 260 #define SHT_MIPS_FDESC          0x70000011
 261
 262 /* ??? */
 263 #define SHT_MIPS_EXTSYM         0x70000012
 264
 265 /* ??? */
 266 #define SHT_MIPS_DENSE          0x70000013
 267
 268 /* ??? */
 269 #define SHT_MIPS_PDESC          0x70000014
 270
 271 /* ??? */
 272 #define SHT_MIPS_LOCSYM         0x70000015
 273
 274 /* ??? */
 275 #define SHT_MIPS_AUXSYM         0x70000016
 276
 277 /* ??? */
 278 #define SHT_MIPS_OPTSYM         0x70000017
 279
 280 /* ??? */
 281 #define SHT_MIPS_LOCSTR         0x70000018
 282
 283 /* ??? */
 284 #define SHT_MIPS_LINE           0x70000019
 285
 286 /* ??? */
 287 #define SHT_MIPS_RFDESC         0x7000001a
 288
 289 /* Delta C++: symbol table */
 290 #define SHT_MIPS_DELTASYM       0x7000001b
 291
 292 /* Delta C++: instance table */
 293 #define SHT_MIPS_DELTAINST      0x7000001c
 294
 295 /* Delta C++: class table */
 296 #define SHT_MIPS_DELTACLASS     0x7000001d
 297
 298 /* DWARF debugging section.  */
 299 #define SHT_MIPS_DWARF          0x7000001e
 300
 301 /* Delta C++: declarations */
 302 #define SHT_MIPS_DELTADECL      0x7000001f
 303
 304 /* List of libraries the binary depends on.  Includes a time stamp, version
 305    number.  */
 306 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 307
 308 /* Events section.  */
 309 #define SHT_MIPS_EVENTS         0x70000021
 310
 311 /* ??? */
 312 #define SHT_MIPS_TRANSLATE      0x70000022
 313
 314 /* Special pixie sections */
 315 #define SHT_MIPS_PIXIE          0x70000023
 316
 317 /* Address translation table (for debug info) */
 318 #define SHT_MIPS_XLATE          0x70000024
 319
 320 /* SGI internal address translation table (for debug info) */
 321 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 322
 323 /* Intermediate code */
 324 #define SHT_MIPS_WHIRL          0x70000026
 325
 326 /* C++ exception handling region info */
 327 #define SHT_MIPS_EH_REGION      0x70000027
 328
 329 /* Obsolete address translation table (for debug info) */
 330 #define SHT_MIPS_XLATE_OLD      0x70000028
 331
 332 /* Runtime procedure descriptor table exception information (ucode) ??? */
 333 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 334
 335
 336 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 337    following structure.  The sh_link field is the section index of the
 338    string table.  The sh_info field is the number of entries in the
 339    section.  */
 340 typedef struct
 341 {
 342   /* String table index for name of shared object.  */
 343   unsigned long l_name;
 344   /* Time stamp.  */
 345   unsigned long l_time_stamp;
 346   /* Checksum of symbol names and common sizes.  */
 347   unsigned long l_checksum;
 348   /* String table index for version.  */
 349   unsigned long l_version;
 350   /* Flags.  */
 351   unsigned long l_flags;
 352 } Elf32_Lib;
 353
 354 /* The external version of Elf32_Lib.  */
 355 typedef struct
 356 {
 357   unsigned char l_name[4];
 358   unsigned char l_time_stamp[4];
 359   unsigned char l_checksum[4];
 360   unsigned char l_version[4];
 361   unsigned char l_flags[4];
 362 } Elf32_External_Lib;
 363
 364 /* The l_flags field of an Elf32_Lib structure may contain the
 365    following flags.  */
 366
 367 /* Require an exact match at runtime.  */
 368 #define LL_EXACT_MATCH          0x00000001
 369
 370 /* Ignore version incompatibilities at runtime.  */
 371 #define LL_IGNORE_INT_VER       0x00000002
 372
 373 /* Require matching minor version number.  */
 374 #define LL_REQUIRE_MINOR        0x00000004
 375
 376 /* ??? */
 377 #define LL_EXPORTS              0x00000008
 378
 379 /* Delay loading of this library until really needed.  */
 380 #define LL_DELAY_LOAD           0x00000010
 381
 382 /* ??? Delta C++ stuff ??? */
 383 #define LL_DELTA                0x00000020
 384
 385
 386 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 387    .dynsym section.  Each element has the following type.  */
 388 typedef unsigned long Elf32_Conflict;
 389 typedef unsigned char Elf32_External_Conflict[4];
 390
 391 typedef unsigned long Elf64_Conflict;
 392 typedef unsigned char Elf64_External_Conflict[8];
 393
 394 /* A section of type SHT_MIPS_GPTAB contains information about how
 395    much GP space would be required for different -G arguments.  This
 396    information is only used so that the linker can provide informative
 397    suggestions as to the best -G value to use.  The sh_info field is
 398    the index of the section for which this information applies.  The
 399    contents of the section are an array of the following union.  The
 400    first element uses the gt_header field.  The remaining elements use
 401    the gt_entry field.  */
 402 typedef union
 403 {
 404   struct
 405     {
 406       /* -G value actually used for this object file.  */
 407       unsigned long gt_current_g_value;
 408       /* Unused.  */
 409       unsigned long gt_unused;
 410     } gt_header;
 411   struct
 412     {
 413       /* If this -G argument has been used...  */
 414       unsigned long gt_g_value;
 415       /* ...this many GP section bytes would be required.  */
 416       unsigned long gt_bytes;
 417     } gt_entry;
 418 } Elf32_gptab;
 419
 420 /* The external version of Elf32_gptab.  */
 421
 422 typedef union
 423 {
 424   struct
 425     {
 426       unsigned char gt_current_g_value[4];
 427       unsigned char gt_unused[4];
 428     } gt_header;
 429   struct
 430     {
 431       unsigned char gt_g_value[4];
 432       unsigned char gt_bytes[4];
 433     } gt_entry;
 434 } Elf32_External_gptab;
 435
 436 /* A section of type SHT_MIPS_REGINFO contains the following
 437    structure.  */
 438 typedef struct
 439 {
 440   /* Mask of general purpose registers used.  */
 441   unsigned long ri_gprmask;
 442   /* Mask of co-processor registers used.  */
 443   unsigned long ri_cprmask[4];
 444   /* GP register value for this object file.  */
 445   long ri_gp_value;
 446 } Elf32_RegInfo;
 447
 448 /* The external version of the Elf_RegInfo structure.  */
 449 typedef struct
 450 {
 451   unsigned char ri_gprmask[4];
 452   unsigned char ri_cprmask[4][4];
 453   unsigned char ri_gp_value[4];
 454 } Elf32_External_RegInfo;
 455
 456 /* MIPS ELF .reginfo swapping routines.  */
 457 extern void bfd_mips_elf32_swap_reginfo_in
 458   (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
 459 extern void bfd_mips_elf32_swap_reginfo_out
 460   (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
 461 \f
 462 /* Processor specific section flags.  */
 463
 464 /* This section must be in the global data area.  */
 465 #define SHF_MIPS_GPREL          0x10000000
 466
 467 /* This section should be merged.  */
 468 #define SHF_MIPS_MERGE          0x20000000
 469
 470 /* This section contains address data of size implied by section
 471    element size.  */
 472 #define SHF_MIPS_ADDR           0x40000000
 473
 474 /* This section contains string data.  */
 475 #define SHF_MIPS_STRING         0x80000000
 476
 477 /* This section may not be stripped.  */
 478 #define SHF_MIPS_NOSTRIP        0x08000000
 479
 480 /* This section is local to threads.  */
 481 #define SHF_MIPS_LOCAL          0x04000000
 482
 483 /* Linker should generate implicit weak names for this section.  */
 484 #define SHF_MIPS_NAMES          0x02000000
 485
 486 /* Section contais text/data which may be replicated in other sections.
 487    Linker should retain only one copy.  */
 488 #define SHF_MIPS_NODUPES        0x01000000
 489 \f
 490 /* Processor specific program header types.  */
 491
 492 /* Register usage information.  Identifies one .reginfo section.  */
 493 #define PT_MIPS_REGINFO         0x70000000
 494
 495 /* Runtime procedure table.  */
 496 #define PT_MIPS_RTPROC          0x70000001
 497
 498 /* .MIPS.options section.  */
 499 #define PT_MIPS_OPTIONS         0x70000002
 500 \f
 501 /* Processor specific dynamic array tags.  */
 502
 503 /* 32 bit version number for runtime linker interface.  */
 504 #define DT_MIPS_RLD_VERSION     0x70000001
 505
 506 /* Time stamp.  */
 507 #define DT_MIPS_TIME_STAMP      0x70000002
 508
 509 /* Checksum of external strings and common sizes.  */
 510 #define DT_MIPS_ICHECKSUM       0x70000003
 511
 512 /* Index of version string in string table.  */
 513 #define DT_MIPS_IVERSION        0x70000004
 514
 515 /* 32 bits of flags.  */
 516 #define DT_MIPS_FLAGS           0x70000005
 517
 518 /* Base address of the segment.  */
 519 #define DT_MIPS_BASE_ADDRESS    0x70000006
 520
 521 /* ??? */
 522 #define DT_MIPS_MSYM            0x70000007
 523
 524 /* Address of .conflict section.  */
 525 #define DT_MIPS_CONFLICT        0x70000008
 526
 527 /* Address of .liblist section.  */
 528 #define DT_MIPS_LIBLIST         0x70000009
 529
 530 /* Number of local global offset table entries.  */
 531 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 532
 533 /* Number of entries in the .conflict section.  */
 534 #define DT_MIPS_CONFLICTNO      0x7000000b
 535
 536 /* Number of entries in the .liblist section.  */
 537 #define DT_MIPS_LIBLISTNO       0x70000010
 538
 539 /* Number of entries in the .dynsym section.  */
 540 #define DT_MIPS_SYMTABNO        0x70000011
 541
 542 /* Index of first external dynamic symbol not referenced locally.  */
 543 #define DT_MIPS_UNREFEXTNO      0x70000012
 544
 545 /* Index of first dynamic symbol in global offset table.  */
 546 #define DT_MIPS_GOTSYM          0x70000013
 547
 548 /* Number of page table entries in global offset table.  */
 549 #define DT_MIPS_HIPAGENO        0x70000014
 550
 551 /* Address of run time loader map, used for debugging.  */
 552 #define DT_MIPS_RLD_MAP         0x70000016
 553
 554 /* Delta C++ class definition.  */
 555 #define DT_MIPS_DELTA_CLASS     0x70000017
 556
 557 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 558 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 559
 560 /* Delta C++ class instances.  */
 561 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 562
 563 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 564 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 565
 566 /* Delta relocations.  */
 567 #define DT_MIPS_DELTA_RELOC     0x7000001b
 568
 569 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 570 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 571
 572 /* Delta symbols that Delta relocations refer to.  */
 573 #define DT_MIPS_DELTA_SYM       0x7000001d
 574
 575 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 576 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 577
 578 /* Delta symbols that hold class declarations.  */
 579 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 580
 581 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 582 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 583
 584 /* Flags indicating information about C++ flavor.  */
 585 #define DT_MIPS_CXX_FLAGS       0x70000022
 586
 587 /* Pixie information (???).  */
 588 #define DT_MIPS_PIXIE_INIT      0x70000023
 589
 590 /* Address of .MIPS.symlib */
 591 #define DT_MIPS_SYMBOL_LIB      0x70000024
 592
 593 /* The GOT index of the first PTE for a segment */
 594 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 595
 596 /* The GOT index of the first PTE for a local symbol */
 597 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 598
 599 /* The GOT index of the first PTE for a hidden symbol */
 600 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 601
 602 /* The GOT index of the first PTE for a protected symbol */
 603 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 604
 605 /* Address of `.MIPS.options'.  */
 606 #define DT_MIPS_OPTIONS         0x70000029
 607
 608 /* Address of `.interface'.  */
 609 #define DT_MIPS_INTERFACE       0x7000002a
 610
 611 /* ??? */
 612 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 613
 614 /* Size of the .interface section.  */
 615 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 616
 617 /* Size of rld_text_resolve function stored in the GOT.  */
 618 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 619
 620 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 621 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 622
 623 /* Size of compact relocation section (O32).  */
 624 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 625
 626 /* GP value for auxiliary GOTs.  */
 627 #define DT_MIPS_GP_VALUE        0x70000030
 628
 629 /* Address of auxiliary .dynamic.  */
 630 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 631 \f
 632 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 633
 634 /* No flags.  */
 635 #define RHF_NONE                0x00000000
 636
 637 /* Uses shortcut pointers.  */
 638 #define RHF_QUICKSTART          0x00000001
 639
 640 /* Hash size is not a power of two.  */
 641 #define RHF_NOTPOT              0x00000002
 642
 643 /* Ignore LD_LIBRARY_PATH.  */
 644 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
 645
 646 /* DSO address may not be relocated. */
 647 #define RHF_NO_MOVE             0x00000008
 648
 649 /* SGI specific features. */
 650 #define RHF_SGI_ONLY            0x00000010
 651
 652 /* Guarantee that .init will finish executing before any non-init
 653    code in DSO is called. */
 654 #define RHF_GUARANTEE_INIT         0x00000020
 655
 656 /* Contains Delta C++ code. */
 657 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 658
 659 /* Guarantee that .init will start executing before any non-init
 660    code in DSO is called. */
 661 #define RHF_GUARANTEE_START_INIT   0x00000080
 662
 663 /* Generated by pixie. */
 664 #define RHF_PIXIE                  0x00000100
 665
 666 /* Delay-load DSO by default. */
 667 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 668
 669 /* Object may be requickstarted */
 670 #define RHF_REQUICKSTART           0x00000400
 671
 672 /* Object has been requickstarted */
 673 #define RHF_REQUICKSTARTED         0x00000800
 674
 675 /* Generated by cord. */
 676 #define RHF_CORD                   0x00001000
 677
 678 /* Object contains no unresolved undef symbols. */
 679 #define RHF_NO_UNRES_UNDEF         0x00002000
 680
 681 /* Symbol table is in a safe order. */
 682 #define RHF_RLD_ORDER_SAFE         0x00004000
 683 \f
 684 /* Special values for the st_other field in the symbol table.  These
 685    are used in an Irix 5 dynamic symbol table.  */
 686
 687 #define STO_DEFAULT             STV_DEFAULT
 688 #define STO_INTERNAL            STV_INTERNAL
 689 #define STO_HIDDEN              STV_HIDDEN
 690 #define STO_PROTECTED           STV_PROTECTED
 691
 692 /* This value is used for a mips16 .text symbol.  */
 693 #define STO_MIPS16              0xf0
 694 \f
 695 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 696    relocation entry specifies up to three actual relocations, all at
 697    the same address.  The first relocation which required a symbol
 698    uses the symbol in the r_sym field.  The second relocation which
 699    requires a symbol uses the symbol in the r_ssym field.  If all
 700    three relocations require a symbol, the third one uses a zero
 701    value.  */
 702
 703 /* An entry in a 64 bit SHT_REL section.  */
 704
 705 typedef struct
 706 {
 707   /* Address of relocation.  */
 708   unsigned char r_offset[8];
 709   /* Symbol index.  */
 710   unsigned char r_sym[4];
 711   /* Special symbol.  */
 712   unsigned char r_ssym[1];
 713   /* Third relocation.  */
 714   unsigned char r_type3[1];
 715   /* Second relocation.  */
 716   unsigned char r_type2[1];
 717   /* First relocation.  */
 718   unsigned char r_type[1];
 719 } Elf64_Mips_External_Rel;
 720
 721 typedef struct
 722 {
 723   /* Address of relocation.  */
 724   bfd_vma r_offset;
 725   /* Symbol index.  */
 726   unsigned long r_sym;
 727   /* Special symbol.  */
 728   unsigned char r_ssym;
 729   /* Third relocation.  */
 730   unsigned char r_type3;
 731   /* Second relocation.  */
 732   unsigned char r_type2;
 733   /* First relocation.  */
 734   unsigned char r_type;
 735 } Elf64_Mips_Internal_Rel;
 736
 737 /* An entry in a 64 bit SHT_RELA section.  */
 738
 739 typedef struct
 740 {
 741   /* Address of relocation.  */
 742   unsigned char r_offset[8];
 743   /* Symbol index.  */
 744   unsigned char r_sym[4];
 745   /* Special symbol.  */
 746   unsigned char r_ssym[1];
 747   /* Third relocation.  */
 748   unsigned char r_type3[1];
 749   /* Second relocation.  */
 750   unsigned char r_type2[1];
 751   /* First relocation.  */
 752   unsigned char r_type[1];
 753   /* Addend.  */
 754   unsigned char r_addend[8];
 755 } Elf64_Mips_External_Rela;
 756
 757 typedef struct
 758 {
 759   /* Address of relocation.  */
 760   bfd_vma r_offset;
 761   /* Symbol index.  */
 762   unsigned long r_sym;
 763   /* Special symbol.  */
 764   unsigned char r_ssym;
 765   /* Third relocation.  */
 766   unsigned char r_type3;
 767   /* Second relocation.  */
 768   unsigned char r_type2;
 769   /* First relocation.  */
 770   unsigned char r_type;
 771   /* Addend.  */
 772   bfd_signed_vma r_addend;
 773 } Elf64_Mips_Internal_Rela;
 774
 775 /* MIPS ELF 64 relocation info access macros.  */
 776 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
 777 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
 778 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
 779 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
 780
 781 /* Values found in the r_ssym field of a relocation entry.  */
 782
 783 /* No relocation.  */
 784 #define RSS_UNDEF       0
 785
 786 /* Value of GP.  */
 787 #define RSS_GP          1
 788
 789 /* Value of GP in object being relocated.  */
 790 #define RSS_GP0         2
 791
 792 /* Address of location being relocated.  */
 793 #define RSS_LOC         3
 794 \f
 795 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 796    which starts with this header.  */
 797
 798 typedef struct
 799 {
 800   /* Type of option.  */
 801   unsigned char kind[1];
 802   /* Size of option descriptor, including header.  */
 803   unsigned char size[1];
 804   /* Section index of affected section, or 0 for global option.  */
 805   unsigned char section[2];
 806   /* Information specific to this kind of option.  */
 807   unsigned char info[4];
 808 } Elf_External_Options;
 809
 810 typedef struct
 811 {
 812   /* Type of option.  */
 813   unsigned char kind;
 814   /* Size of option descriptor, including header.  */
 815   unsigned char size;
 816   /* Section index of affected section, or 0 for global option.  */
 817   unsigned short section;
 818   /* Information specific to this kind of option.  */
 819   unsigned long info;
 820 } Elf_Internal_Options;
 821
 822 /* MIPS ELF option header swapping routines.  */
 823 extern void bfd_mips_elf_swap_options_in
 824   (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
 825 extern void bfd_mips_elf_swap_options_out
 826   (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
 827
 828 /* Values which may appear in the kind field of an Elf_Options
 829    structure.  */
 830
 831 /* Undefined.  */
 832 #define ODK_NULL        0
 833
 834 /* Register usage and GP value.  */
 835 #define ODK_REGINFO     1
 836
 837 /* Exception processing information.  */
 838 #define ODK_EXCEPTIONS  2
 839
 840 /* Section padding information.  */
 841 #define ODK_PAD         3
 842
 843 /* Hardware workarounds performed.  */
 844 #define ODK_HWPATCH     4
 845
 846 /* Fill value used by the linker.  */
 847 #define ODK_FILL        5
 848
 849 /* Reserved space for desktop tools.  */
 850 #define ODK_TAGS        6
 851
 852 /* Hardware workarounds, AND bits when merging.  */
 853 #define ODK_HWAND       7
 854
 855 /* Hardware workarounds, OR bits when merging.  */
 856 #define ODK_HWOR        8
 857
 858 /* GP group to use for text/data sections.  */
 859 #define ODK_GP_GROUP    9
 860
 861 /* ID information.  */
 862 #define ODK_IDENT       10
 863
 864 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
 865    structure.  In the 64 bit ABI, it is the following structure.  The
 866    info field of the options header is not used.  */
 867
 868 typedef struct
 869 {
 870   /* Mask of general purpose registers used.  */
 871   unsigned char ri_gprmask[4];
 872   /* Padding.  */
 873   unsigned char ri_pad[4];
 874   /* Mask of co-processor registers used.  */
 875   unsigned char ri_cprmask[4][4];
 876   /* GP register value for this object file.  */
 877   unsigned char ri_gp_value[8];
 878 } Elf64_External_RegInfo;
 879
 880 typedef struct
 881 {
 882   /* Mask of general purpose registers used.  */
 883   unsigned long ri_gprmask;
 884   /* Padding.  */
 885   unsigned long ri_pad;
 886   /* Mask of co-processor registers used.  */
 887   unsigned long ri_cprmask[4];
 888   /* GP register value for this object file.  */
 889   bfd_vma ri_gp_value;
 890 } Elf64_Internal_RegInfo;
 891
 892 typedef struct
 893 {
 894   /* The hash value computed from the name of the corresponding
 895      dynamic symbol.  */
 896   unsigned char ms_hash_value[4];
 897   /* Contains both the dynamic relocation index and the symbol flags
 898      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 899      to access the individual values.  The dynamic relocation index
 900      identifies the first entry in the .rel.dyn section that
 901      references the dynamic symbol corresponding to this msym entry.
 902      If the index is 0, no dynamic relocations are associated with the
 903      symbol.  The symbol flags field is reserved for future use.  */
 904   unsigned char ms_info[4];
 905 } Elf32_External_Msym;
 906
 907 typedef struct
 908 {
 909   /* The hash value computed from the name of the corresponding
 910      dynamic symbol.  */
 911   unsigned long ms_hash_value;
 912   /* Contains both the dynamic relocation index and the symbol flags
 913      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 914      to access the individual values.  The dynamic relocation index
 915      identifies the first entry in the .rel.dyn section that
 916      references the dynamic symbol corresponding to this msym entry.
 917      If the index is 0, no dynamic relocations are associated with the
 918      symbol.  The symbol flags field is reserved for future use.  */
 919   unsigned long ms_info;
 920 } Elf32_Internal_Msym;
 921
 922 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
 923 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
 924 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
 925
 926 /* MIPS ELF reginfo swapping routines.  */
 927 extern void bfd_mips_elf64_swap_reginfo_in
 928   (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
 929 extern void bfd_mips_elf64_swap_reginfo_out
 930   (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
 931
 932 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
 933 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
 934 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
 935 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
 936 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
 937 #define OEX_FPDBUG      0x40000 /* Force precise floating-point
 938                                    exceptions (debug mode).  */
 939 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
 940
 941 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
 942 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
 943 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
 944 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
 945 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
 946 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
 947
 948 /* Masks for the info word of an ODK_PAD descriptor.  */
 949 #define OPAD_PREFIX     0x01
 950 #define OPAD_POSTFIX    0x02
 951 #define OPAD_SYMBOL     0x04
 952
 953 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
 954 #define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
 955 #define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
 956 #define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
 957 #define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
 958                                            (clean == 1).  */
 959 #define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
 960                                            load patch. */
 961
 962 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
 963 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
 964 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
 965
 966 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
 967 #define OHWA0_R4KEOP_CHECKED    0x00000001
 968 #define OHWA0_R4KEOP_CLEAN      0x00000002
 969 \f
 970
 971 #endif /* _ELF_MIPS_H */