include/elf/mips.h

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