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_4111        0x00880000
 179 #define E_MIPS_MACH_SB1         0x008a0000
 180 \f
 181 /* Processor specific section indices.  These sections do not actually
 182    exist.  Symbols with a st_shndx field corresponding to one of these
 183    values have a special meaning.  */
 184
 185 /* Defined and allocated common symbol.  Value is virtual address.  If
 186    relocated, alignment must be preserved.  */
 187 #define SHN_MIPS_ACOMMON        0xff00
 188
 189 /* Defined and allocated text symbol.  Value is virtual address.
 190    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 191 #define SHN_MIPS_TEXT           0xff01
 192
 193 /* Defined and allocated data symbol.  Value is virtual address.
 194    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 195 #define SHN_MIPS_DATA           0xff02
 196
 197 /* Small common symbol.  */
 198 #define SHN_MIPS_SCOMMON        0xff03
 199
 200 /* Small undefined symbol.  */
 201 #define SHN_MIPS_SUNDEFINED     0xff04
 202 \f
 203 /* Processor specific section types.  */
 204
 205 /* Section contains the set of dynamic shared objects used when
 206    statically linking.  */
 207 #define SHT_MIPS_LIBLIST        0x70000000
 208
 209 /* I'm not sure what this is, but it's used on Irix 5.  */
 210 #define SHT_MIPS_MSYM           0x70000001
 211
 212 /* Section contains list of symbols whose definitions conflict with
 213    symbols defined in shared objects.  */
 214 #define SHT_MIPS_CONFLICT       0x70000002
 215
 216 /* Section contains the global pointer table.  */
 217 #define SHT_MIPS_GPTAB          0x70000003
 218
 219 /* Section contains microcode information.  The exact format is
 220    unspecified.  */
 221 #define SHT_MIPS_UCODE          0x70000004
 222
 223 /* Section contains some sort of debugging information.  The exact
 224    format is unspecified.  It's probably ECOFF symbols.  */
 225 #define SHT_MIPS_DEBUG          0x70000005
 226
 227 /* Section contains register usage information.  */
 228 #define SHT_MIPS_REGINFO        0x70000006
 229
 230 /* ??? */
 231 #define SHT_MIPS_PACKAGE        0x70000007
 232
 233 /* ??? */
 234 #define SHT_MIPS_PACKSYM        0x70000008
 235
 236 /* ??? */
 237 #define SHT_MIPS_RELD           0x70000009
 238
 239 /* Section contains interface information.  */
 240 #define SHT_MIPS_IFACE          0x7000000b
 241
 242 /* Section contains description of contents of another section.  */
 243 #define SHT_MIPS_CONTENT        0x7000000c
 244
 245 /* Section contains miscellaneous options.  */
 246 #define SHT_MIPS_OPTIONS        0x7000000d
 247
 248 /* ??? */
 249 #define SHT_MIPS_SHDR           0x70000010
 250
 251 /* ??? */
 252 #define SHT_MIPS_FDESC          0x70000011
 253
 254 /* ??? */
 255 #define SHT_MIPS_EXTSYM         0x70000012
 256
 257 /* ??? */
 258 #define SHT_MIPS_DENSE          0x70000013
 259
 260 /* ??? */
 261 #define SHT_MIPS_PDESC          0x70000014
 262
 263 /* ??? */
 264 #define SHT_MIPS_LOCSYM         0x70000015
 265
 266 /* ??? */
 267 #define SHT_MIPS_AUXSYM         0x70000016
 268
 269 /* ??? */
 270 #define SHT_MIPS_OPTSYM         0x70000017
 271
 272 /* ??? */
 273 #define SHT_MIPS_LOCSTR         0x70000018
 274
 275 /* ??? */
 276 #define SHT_MIPS_LINE           0x70000019
 277
 278 /* ??? */
 279 #define SHT_MIPS_RFDESC         0x7000001a
 280
 281 /* Delta C++: symbol table */
 282 #define SHT_MIPS_DELTASYM       0x7000001b
 283
 284 /* Delta C++: instance table */
 285 #define SHT_MIPS_DELTAINST      0x7000001c
 286
 287 /* Delta C++: class table */
 288 #define SHT_MIPS_DELTACLASS     0x7000001d
 289
 290 /* DWARF debugging section.  */
 291 #define SHT_MIPS_DWARF          0x7000001e
 292
 293 /* Delta C++: declarations */
 294 #define SHT_MIPS_DELTADECL      0x7000001f
 295
 296 /* List of libraries the binary depends on.  Includes a time stamp, version
 297    number.  */
 298 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 299
 300 /* Events section.  */
 301 #define SHT_MIPS_EVENTS         0x70000021
 302
 303 /* ??? */
 304 #define SHT_MIPS_TRANSLATE      0x70000022
 305
 306 /* Special pixie sections */
 307 #define SHT_MIPS_PIXIE          0x70000023
 308
 309 /* Address translation table (for debug info) */
 310 #define SHT_MIPS_XLATE          0x70000024
 311
 312 /* SGI internal address translation table (for debug info) */
 313 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 314
 315 /* Intermediate code */
 316 #define SHT_MIPS_WHIRL          0x70000026
 317
 318 /* C++ exception handling region info */
 319 #define SHT_MIPS_EH_REGION      0x70000027
 320
 321 /* Obsolete address translation table (for debug info) */
 322 #define SHT_MIPS_XLATE_OLD      0x70000028
 323
 324 /* Runtime procedure descriptor table exception information (ucode) ??? */
 325 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 326
 327
 328 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 329    following structure.  The sh_link field is the section index of the
 330    string table.  The sh_info field is the number of entries in the
 331    section.  */
 332 typedef struct
 333 {
 334   /* String table index for name of shared object.  */
 335   unsigned long l_name;
 336   /* Time stamp.  */
 337   unsigned long l_time_stamp;
 338   /* Checksum of symbol names and common sizes.  */
 339   unsigned long l_checksum;
 340   /* String table index for version.  */
 341   unsigned long l_version;
 342   /* Flags.  */
 343   unsigned long l_flags;
 344 } Elf32_Lib;
 345
 346 /* The external version of Elf32_Lib.  */
 347 typedef struct
 348 {
 349   unsigned char l_name[4];
 350   unsigned char l_time_stamp[4];
 351   unsigned char l_checksum[4];
 352   unsigned char l_version[4];
 353   unsigned char l_flags[4];
 354 } Elf32_External_Lib;
 355
 356 /* The l_flags field of an Elf32_Lib structure may contain the
 357    following flags.  */
 358
 359 /* Require an exact match at runtime.  */
 360 #define LL_EXACT_MATCH          0x00000001
 361
 362 /* Ignore version incompatibilities at runtime.  */
 363 #define LL_IGNORE_INT_VER       0x00000002
 364
 365 /* Require matching minor version number.  */
 366 #define LL_REQUIRE_MINOR        0x00000004
 367
 368 /* ??? */
 369 #define LL_EXPORTS              0x00000008
 370
 371 /* Delay loading of this library until really needed.  */
 372 #define LL_DELAY_LOAD           0x00000010
 373
 374 /* ??? Delta C++ stuff ??? */
 375 #define LL_DELTA                0x00000020
 376
 377
 378 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 379    .dynsym section.  Each element has the following type.  */
 380 typedef unsigned long Elf32_Conflict;
 381 typedef unsigned char Elf32_External_Conflict[4];
 382
 383 typedef unsigned long Elf64_Conflict;
 384 typedef unsigned char Elf64_External_Conflict[8];
 385
 386 /* A section of type SHT_MIPS_GPTAB contains information about how
 387    much GP space would be required for different -G arguments.  This
 388    information is only used so that the linker can provide informative
 389    suggestions as to the best -G value to use.  The sh_info field is
 390    the index of the section for which this information applies.  The
 391    contents of the section are an array of the following union.  The
 392    first element uses the gt_header field.  The remaining elements use
 393    the gt_entry field.  */
 394 typedef union
 395 {
 396   struct
 397     {
 398       /* -G value actually used for this object file.  */
 399       unsigned long gt_current_g_value;
 400       /* Unused.  */
 401       unsigned long gt_unused;
 402     } gt_header;
 403   struct
 404     {
 405       /* If this -G argument has been used...  */
 406       unsigned long gt_g_value;
 407       /* ...this many GP section bytes would be required.  */
 408       unsigned long gt_bytes;
 409     } gt_entry;
 410 } Elf32_gptab;
 411
 412 /* The external version of Elf32_gptab.  */
 413
 414 typedef union
 415 {
 416   struct
 417     {
 418       unsigned char gt_current_g_value[4];
 419       unsigned char gt_unused[4];
 420     } gt_header;
 421   struct
 422     {
 423       unsigned char gt_g_value[4];
 424       unsigned char gt_bytes[4];
 425     } gt_entry;
 426 } Elf32_External_gptab;
 427
 428 /* A section of type SHT_MIPS_REGINFO contains the following
 429    structure.  */
 430 typedef struct
 431 {
 432   /* Mask of general purpose registers used.  */
 433   unsigned long ri_gprmask;
 434   /* Mask of co-processor registers used.  */
 435   unsigned long ri_cprmask[4];
 436   /* GP register value for this object file.  */
 437   long ri_gp_value;
 438 } Elf32_RegInfo;
 439
 440 /* The external version of the Elf_RegInfo structure.  */
 441 typedef struct
 442 {
 443   unsigned char ri_gprmask[4];
 444   unsigned char ri_cprmask[4][4];
 445   unsigned char ri_gp_value[4];
 446 } Elf32_External_RegInfo;
 447
 448 /* MIPS ELF .reginfo swapping routines.  */
 449 extern void bfd_mips_elf32_swap_reginfo_in
 450   PARAMS ((bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *));
 451 extern void bfd_mips_elf32_swap_reginfo_out
 452   PARAMS ((bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *));
 453 \f
 454 /* Processor specific section flags.  */
 455
 456 /* This section must be in the global data area.  */
 457 #define SHF_MIPS_GPREL          0x10000000
 458
 459 /* This section should be merged.  */
 460 #define SHF_MIPS_MERGE          0x20000000
 461
 462 /* This section contains address data of size implied by section
 463    element size.  */
 464 #define SHF_MIPS_ADDR           0x40000000
 465
 466 /* This section contains string data.  */
 467 #define SHF_MIPS_STRING         0x80000000
 468
 469 /* This section may not be stripped.  */
 470 #define SHF_MIPS_NOSTRIP        0x08000000
 471
 472 /* This section is local to threads.  */
 473 #define SHF_MIPS_LOCAL          0x04000000
 474
 475 /* Linker should generate implicit weak names for this section.  */
 476 #define SHF_MIPS_NAMES          0x02000000
 477
 478 /* Section contais text/data which may be replicated in other sections.
 479    Linker should retain only one copy.  */
 480 #define SHF_MIPS_NODUPES        0x01000000
 481 \f
 482 /* Processor specific program header types.  */
 483
 484 /* Register usage information.  Identifies one .reginfo section.  */
 485 #define PT_MIPS_REGINFO         0x70000000
 486
 487 /* Runtime procedure table.  */
 488 #define PT_MIPS_RTPROC          0x70000001
 489
 490 /* .MIPS.options section.  */
 491 #define PT_MIPS_OPTIONS         0x70000002
 492 \f
 493 /* Processor specific dynamic array tags.  */
 494
 495 /* 32 bit version number for runtime linker interface.  */
 496 #define DT_MIPS_RLD_VERSION     0x70000001
 497
 498 /* Time stamp.  */
 499 #define DT_MIPS_TIME_STAMP      0x70000002
 500
 501 /* Checksum of external strings and common sizes.  */
 502 #define DT_MIPS_ICHECKSUM       0x70000003
 503
 504 /* Index of version string in string table.  */
 505 #define DT_MIPS_IVERSION        0x70000004
 506
 507 /* 32 bits of flags.  */
 508 #define DT_MIPS_FLAGS           0x70000005
 509
 510 /* Base address of the segment.  */
 511 #define DT_MIPS_BASE_ADDRESS    0x70000006
 512
 513 /* ??? */
 514 #define DT_MIPS_MSYM            0x70000007
 515
 516 /* Address of .conflict section.  */
 517 #define DT_MIPS_CONFLICT        0x70000008
 518
 519 /* Address of .liblist section.  */
 520 #define DT_MIPS_LIBLIST         0x70000009
 521
 522 /* Number of local global offset table entries.  */
 523 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 524
 525 /* Number of entries in the .conflict section.  */
 526 #define DT_MIPS_CONFLICTNO      0x7000000b
 527
 528 /* Number of entries in the .liblist section.  */
 529 #define DT_MIPS_LIBLISTNO       0x70000010
 530
 531 /* Number of entries in the .dynsym section.  */
 532 #define DT_MIPS_SYMTABNO        0x70000011
 533
 534 /* Index of first external dynamic symbol not referenced locally.  */
 535 #define DT_MIPS_UNREFEXTNO      0x70000012
 536
 537 /* Index of first dynamic symbol in global offset table.  */
 538 #define DT_MIPS_GOTSYM          0x70000013
 539
 540 /* Number of page table entries in global offset table.  */
 541 #define DT_MIPS_HIPAGENO        0x70000014
 542
 543 /* Address of run time loader map, used for debugging.  */
 544 #define DT_MIPS_RLD_MAP         0x70000016
 545
 546 /* Delta C++ class definition.  */
 547 #define DT_MIPS_DELTA_CLASS     0x70000017
 548
 549 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 550 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 551
 552 /* Delta C++ class instances.  */
 553 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 554
 555 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 556 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 557
 558 /* Delta relocations.  */
 559 #define DT_MIPS_DELTA_RELOC     0x7000001b
 560
 561 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 562 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 563
 564 /* Delta symbols that Delta relocations refer to.  */
 565 #define DT_MIPS_DELTA_SYM       0x7000001d
 566
 567 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 568 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 569
 570 /* Delta symbols that hold class declarations.  */
 571 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 572
 573 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 574 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 575
 576 /* Flags indicating information about C++ flavor.  */
 577 #define DT_MIPS_CXX_FLAGS       0x70000022
 578
 579 /* Pixie information (???).  */
 580 #define DT_MIPS_PIXIE_INIT      0x70000023
 581
 582 /* Address of .MIPS.symlib */
 583 #define DT_MIPS_SYMBOL_LIB      0x70000024
 584
 585 /* The GOT index of the first PTE for a segment */
 586 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 587
 588 /* The GOT index of the first PTE for a local symbol */
 589 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 590
 591 /* The GOT index of the first PTE for a hidden symbol */
 592 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 593
 594 /* The GOT index of the first PTE for a protected symbol */
 595 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 596
 597 /* Address of `.MIPS.options'.  */
 598 #define DT_MIPS_OPTIONS         0x70000029
 599
 600 /* Address of `.interface'.  */
 601 #define DT_MIPS_INTERFACE       0x7000002a
 602
 603 /* ??? */
 604 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 605
 606 /* Size of the .interface section.  */
 607 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 608
 609 /* Size of rld_text_resolve function stored in the GOT.  */
 610 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 611
 612 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 613 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 614
 615 /* Size of compact relocation section (O32).  */
 616 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 617
 618 /* GP value for auxiliary GOTs.  */
 619 #define DT_MIPS_GP_VALUE        0x70000030
 620
 621 /* Address of auxiliary .dynamic.  */
 622 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 623 \f
 624 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 625
 626 /* No flags.  */
 627 #define RHF_NONE                0x00000000
 628
 629 /* Uses shortcut pointers.  */
 630 #define RHF_QUICKSTART          0x00000001
 631
 632 /* Hash size is not a power of two.  */
 633 #define RHF_NOTPOT              0x00000002
 634
 635 /* Ignore LD_LIBRARY_PATH.  */
 636 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
 637
 638 /* DSO address may not be relocated. */
 639 #define RHF_NO_MOVE             0x00000008
 640
 641 /* SGI specific features. */
 642 #define RHF_SGI_ONLY            0x00000010
 643
 644 /* Guarantee that .init will finish executing before any non-init
 645    code in DSO is called. */
 646 #define RHF_GUARANTEE_INIT         0x00000020
 647
 648 /* Contains Delta C++ code. */
 649 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 650
 651 /* Guarantee that .init will start executing before any non-init
 652    code in DSO is called. */
 653 #define RHF_GUARANTEE_START_INIT   0x00000080
 654
 655 /* Generated by pixie. */
 656 #define RHF_PIXIE                  0x00000100
 657
 658 /* Delay-load DSO by default. */
 659 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 660
 661 /* Object may be requickstarted */
 662 #define RHF_REQUICKSTART           0x00000400
 663
 664 /* Object has been requickstarted */
 665 #define RHF_REQUICKSTARTED         0x00000800
 666
 667 /* Generated by cord. */
 668 #define RHF_CORD                   0x00001000
 669
 670 /* Object contains no unresolved undef symbols. */
 671 #define RHF_NO_UNRES_UNDEF         0x00002000
 672
 673 /* Symbol table is in a safe order. */
 674 #define RHF_RLD_ORDER_SAFE         0x00004000
 675 \f
 676 /* Special values for the st_other field in the symbol table.  These
 677    are used in an Irix 5 dynamic symbol table.  */
 678
 679 #define STO_DEFAULT             STV_DEFAULT
 680 #define STO_INTERNAL            STV_INTERNAL
 681 #define STO_HIDDEN              STV_HIDDEN
 682 #define STO_PROTECTED           STV_PROTECTED
 683
 684 /* This value is used for a mips16 .text symbol.  */
 685 #define STO_MIPS16              0xf0
 686 \f
 687 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 688    relocation entry specifies up to three actual relocations, all at
 689    the same address.  The first relocation which required a symbol
 690    uses the symbol in the r_sym field.  The second relocation which
 691    requires a symbol uses the symbol in the r_ssym field.  If all
 692    three relocations require a symbol, the third one uses a zero
 693    value.  */
 694
 695 /* An entry in a 64 bit SHT_REL section.  */
 696
 697 typedef struct
 698 {
 699   /* Address of relocation.  */
 700   unsigned char r_offset[8];
 701   /* Symbol index.  */
 702   unsigned char r_sym[4];
 703   /* Special symbol.  */
 704   unsigned char r_ssym[1];
 705   /* Third relocation.  */
 706   unsigned char r_type3[1];
 707   /* Second relocation.  */
 708   unsigned char r_type2[1];
 709   /* First relocation.  */
 710   unsigned char r_type[1];
 711 } Elf64_Mips_External_Rel;
 712
 713 typedef struct
 714 {
 715   /* Address of relocation.  */
 716   bfd_vma r_offset;
 717   /* Symbol index.  */
 718   unsigned long r_sym;
 719   /* Special symbol.  */
 720   unsigned char r_ssym;
 721   /* Third relocation.  */
 722   unsigned char r_type3;
 723   /* Second relocation.  */
 724   unsigned char r_type2;
 725   /* First relocation.  */
 726   unsigned char r_type;
 727 } Elf64_Mips_Internal_Rel;
 728
 729 /* An entry in a 64 bit SHT_RELA section.  */
 730
 731 typedef struct
 732 {
 733   /* Address of relocation.  */
 734   unsigned char r_offset[8];
 735   /* Symbol index.  */
 736   unsigned char r_sym[4];
 737   /* Special symbol.  */
 738   unsigned char r_ssym[1];
 739   /* Third relocation.  */
 740   unsigned char r_type3[1];
 741   /* Second relocation.  */
 742   unsigned char r_type2[1];
 743   /* First relocation.  */
 744   unsigned char r_type[1];
 745   /* Addend.  */
 746   unsigned char r_addend[8];
 747 } Elf64_Mips_External_Rela;
 748
 749 typedef struct
 750 {
 751   /* Address of relocation.  */
 752   bfd_vma r_offset;
 753   /* Symbol index.  */
 754   unsigned long r_sym;
 755   /* Special symbol.  */
 756   unsigned char r_ssym;
 757   /* Third relocation.  */
 758   unsigned char r_type3;
 759   /* Second relocation.  */
 760   unsigned char r_type2;
 761   /* First relocation.  */
 762   unsigned char r_type;
 763   /* Addend.  */
 764   bfd_signed_vma r_addend;
 765 } Elf64_Mips_Internal_Rela;
 766
 767 /* MIPS ELF 64 relocation info access macros.  */
 768 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
 769 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
 770 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
 771 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
 772
 773 /* Values found in the r_ssym field of a relocation entry.  */
 774
 775 /* No relocation.  */
 776 #define RSS_UNDEF       0
 777
 778 /* Value of GP.  */
 779 #define RSS_GP          1
 780
 781 /* Value of GP in object being relocated.  */
 782 #define RSS_GP0         2
 783
 784 /* Address of location being relocated.  */
 785 #define RSS_LOC         3
 786 \f
 787 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 788    which starts with this header.  */
 789
 790 typedef struct
 791 {
 792   /* Type of option.  */
 793   unsigned char kind[1];
 794   /* Size of option descriptor, including header.  */
 795   unsigned char size[1];
 796   /* Section index of affected section, or 0 for global option.  */
 797   unsigned char section[2];
 798   /* Information specific to this kind of option.  */
 799   unsigned char info[4];
 800 } Elf_External_Options;
 801
 802 typedef struct
 803 {
 804   /* Type of option.  */
 805   unsigned char kind;
 806   /* Size of option descriptor, including header.  */
 807   unsigned char size;
 808   /* Section index of affected section, or 0 for global option.  */
 809   unsigned short section;
 810   /* Information specific to this kind of option.  */
 811   unsigned long info;
 812 } Elf_Internal_Options;
 813
 814 /* MIPS ELF option header swapping routines.  */
 815 extern void bfd_mips_elf_swap_options_in
 816   PARAMS ((bfd *, const Elf_External_Options *, Elf_Internal_Options *));
 817 extern void bfd_mips_elf_swap_options_out
 818   PARAMS ((bfd *, const Elf_Internal_Options *, Elf_External_Options *));
 819
 820 /* Values which may appear in the kind field of an Elf_Options
 821    structure.  */
 822
 823 /* Undefined.  */
 824 #define ODK_NULL        0
 825
 826 /* Register usage and GP value.  */
 827 #define ODK_REGINFO     1
 828
 829 /* Exception processing information.  */
 830 #define ODK_EXCEPTIONS  2
 831
 832 /* Section padding information.  */
 833 #define ODK_PAD         3
 834
 835 /* Hardware workarounds performed.  */
 836 #define ODK_HWPATCH     4
 837
 838 /* Fill value used by the linker.  */
 839 #define ODK_FILL        5
 840
 841 /* Reserved space for desktop tools.  */
 842 #define ODK_TAGS        6
 843
 844 /* Hardware workarounds, AND bits when merging.  */
 845 #define ODK_HWAND       7
 846
 847 /* Hardware workarounds, OR bits when merging.  */
 848 #define ODK_HWOR        8
 849
 850 /* GP group to use for text/data sections.  */
 851 #define ODK_GP_GROUP    9
 852
 853 /* ID information.  */
 854 #define ODK_IDENT       10
 855
 856 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
 857    structure.  In the 64 bit ABI, it is the following structure.  The
 858    info field of the options header is not used.  */
 859
 860 typedef struct
 861 {
 862   /* Mask of general purpose registers used.  */
 863   unsigned char ri_gprmask[4];
 864   /* Padding.  */
 865   unsigned char ri_pad[4];
 866   /* Mask of co-processor registers used.  */
 867   unsigned char ri_cprmask[4][4];
 868   /* GP register value for this object file.  */
 869   unsigned char ri_gp_value[8];
 870 } Elf64_External_RegInfo;
 871
 872 typedef struct
 873 {
 874   /* Mask of general purpose registers used.  */
 875   unsigned long ri_gprmask;
 876   /* Padding.  */
 877   unsigned long ri_pad;
 878   /* Mask of co-processor registers used.  */
 879   unsigned long ri_cprmask[4];
 880   /* GP register value for this object file.  */
 881   bfd_vma ri_gp_value;
 882 } Elf64_Internal_RegInfo;
 883
 884 typedef struct
 885 {
 886   /* The hash value computed from the name of the corresponding
 887      dynamic symbol.  */
 888   unsigned char ms_hash_value[4];
 889   /* Contains both the dynamic relocation index and the symbol flags
 890      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 891      to access the individual values.  The dynamic relocation index
 892      identifies the first entry in the .rel.dyn section that
 893      references the dynamic symbol corresponding to this msym entry.
 894      If the index is 0, no dynamic relocations are associated with the
 895      symbol.  The symbol flags field is reserved for future use.  */
 896   unsigned char ms_info[4];
 897 } Elf32_External_Msym;
 898
 899 typedef struct
 900 {
 901   /* The hash value computed from the name of the corresponding
 902      dynamic symbol.  */
 903   unsigned long ms_hash_value;
 904   /* Contains both the dynamic relocation index and the symbol flags
 905      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 906      to access the individual values.  The dynamic relocation index
 907      identifies the first entry in the .rel.dyn section that
 908      references the dynamic symbol corresponding to this msym entry.
 909      If the index is 0, no dynamic relocations are associated with the
 910      symbol.  The symbol flags field is reserved for future use.  */
 911   unsigned long ms_info;
 912 } Elf32_Internal_Msym;
 913
 914 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
 915 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
 916 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
 917
 918 /* MIPS ELF reginfo swapping routines.  */
 919 extern void bfd_mips_elf64_swap_reginfo_in
 920   PARAMS ((bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *));
 921 extern void bfd_mips_elf64_swap_reginfo_out
 922   PARAMS ((bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *));
 923
 924 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
 925 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
 926 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
 927 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
 928 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
 929 #define OEX_FPDBUG      0x40000 /* Force precise floating-point
 930                                    exceptions (debug mode).  */
 931 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
 932
 933 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
 934 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
 935 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
 936 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
 937 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
 938 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
 939
 940 /* Masks for the info word of an ODK_PAD descriptor.  */
 941 #define OPAD_PREFIX     0x01
 942 #define OPAD_POSTFIX    0x02
 943 #define OPAD_SYMBOL     0x04
 944
 945 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
 946 #define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
 947 #define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
 948 #define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
 949 #define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
 950                                            (clean == 1).  */
 951 #define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
 952                                            load patch. */
 953
 954 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
 955 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
 956 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
 957
 958 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
 959 #define OHWA0_R4KEOP_CHECKED    0x00000001
 960 #define OHWA0_R4KEOP_CLEAN      0x00000002
 961 \f
 962
 963 #endif /* _ELF_MIPS_H */