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
 176 #define E_MIPS_MACH_4010        0x00820000
 177 #define E_MIPS_MACH_4100        0x00830000
 178 #define E_MIPS_MACH_4650        0x00850000
 179 #define E_MIPS_MACH_4111        0x00880000
 180 #define E_MIPS_MACH_MIPS32_4K   0x00890000
 181 #define E_MIPS_MACH_SB1         0x008a0000
 182 \f
 183 /* Processor specific section indices.  These sections do not actually
 184    exist.  Symbols with a st_shndx field corresponding to one of these
 185    values have a special meaning.  */
 186
 187 /* Defined and allocated common symbol.  Value is virtual address.  If
 188    relocated, alignment must be preserved.  */
 189 #define SHN_MIPS_ACOMMON        0xff00
 190
 191 /* Defined and allocated text symbol.  Value is virtual address.
 192    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 193 #define SHN_MIPS_TEXT           0xff01
 194
 195 /* Defined and allocated data symbol.  Value is virtual address.
 196    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 197 #define SHN_MIPS_DATA           0xff02
 198
 199 /* Small common symbol.  */
 200 #define SHN_MIPS_SCOMMON        0xff03
 201
 202 /* Small undefined symbol.  */
 203 #define SHN_MIPS_SUNDEFINED     0xff04
 204 \f
 205 /* Processor specific section types.  */
 206
 207 /* Section contains the set of dynamic shared objects used when
 208    statically linking.  */
 209 #define SHT_MIPS_LIBLIST        0x70000000
 210
 211 /* I'm not sure what this is, but it's used on Irix 5.  */
 212 #define SHT_MIPS_MSYM           0x70000001
 213
 214 /* Section contains list of symbols whose definitions conflict with
 215    symbols defined in shared objects.  */
 216 #define SHT_MIPS_CONFLICT       0x70000002
 217
 218 /* Section contains the global pointer table.  */
 219 #define SHT_MIPS_GPTAB          0x70000003
 220
 221 /* Section contains microcode information.  The exact format is
 222    unspecified.  */
 223 #define SHT_MIPS_UCODE          0x70000004
 224
 225 /* Section contains some sort of debugging information.  The exact
 226    format is unspecified.  It's probably ECOFF symbols.  */
 227 #define SHT_MIPS_DEBUG          0x70000005
 228
 229 /* Section contains register usage information.  */
 230 #define SHT_MIPS_REGINFO        0x70000006
 231
 232 /* ??? */
 233 #define SHT_MIPS_PACKAGE        0x70000007
 234
 235 /* ??? */
 236 #define SHT_MIPS_PACKSYM        0x70000008
 237
 238 /* ??? */
 239 #define SHT_MIPS_RELD           0x70000009
 240
 241 /* Section contains interface information.  */
 242 #define SHT_MIPS_IFACE          0x7000000b
 243
 244 /* Section contains description of contents of another section.  */
 245 #define SHT_MIPS_CONTENT        0x7000000c
 246
 247 /* Section contains miscellaneous options.  */
 248 #define SHT_MIPS_OPTIONS        0x7000000d
 249
 250 /* ??? */
 251 #define SHT_MIPS_SHDR           0x70000010
 252
 253 /* ??? */
 254 #define SHT_MIPS_FDESC          0x70000011
 255
 256 /* ??? */
 257 #define SHT_MIPS_EXTSYM         0x70000012
 258
 259 /* ??? */
 260 #define SHT_MIPS_DENSE          0x70000013
 261
 262 /* ??? */
 263 #define SHT_MIPS_PDESC          0x70000014
 264
 265 /* ??? */
 266 #define SHT_MIPS_LOCSYM         0x70000015
 267
 268 /* ??? */
 269 #define SHT_MIPS_AUXSYM         0x70000016
 270
 271 /* ??? */
 272 #define SHT_MIPS_OPTSYM         0x70000017
 273
 274 /* ??? */
 275 #define SHT_MIPS_LOCSTR         0x70000018
 276
 277 /* ??? */
 278 #define SHT_MIPS_LINE           0x70000019
 279
 280 /* ??? */
 281 #define SHT_MIPS_RFDESC         0x7000001a
 282
 283 /* Delta C++: symbol table */
 284 #define SHT_MIPS_DELTASYM       0x7000001b
 285
 286 /* Delta C++: instance table */
 287 #define SHT_MIPS_DELTAINST      0x7000001c
 288
 289 /* Delta C++: class table */
 290 #define SHT_MIPS_DELTACLASS     0x7000001d
 291
 292 /* DWARF debugging section.  */
 293 #define SHT_MIPS_DWARF          0x7000001e
 294
 295 /* Delta C++: declarations */
 296 #define SHT_MIPS_DELTADECL      0x7000001f
 297
 298 /* List of libraries the binary depends on.  Includes a time stamp, version
 299    number.  */
 300 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 301
 302 /* Events section.  */
 303 #define SHT_MIPS_EVENTS         0x70000021
 304
 305 /* ??? */
 306 #define SHT_MIPS_TRANSLATE      0x70000022
 307
 308 /* Special pixie sections */
 309 #define SHT_MIPS_PIXIE          0x70000023
 310
 311 /* Address translation table (for debug info) */
 312 #define SHT_MIPS_XLATE          0x70000024
 313
 314 /* SGI internal address translation table (for debug info) */
 315 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 316
 317 /* Intermediate code */
 318 #define SHT_MIPS_WHIRL          0x70000026
 319
 320 /* C++ exception handling region info */
 321 #define SHT_MIPS_EH_REGION      0x70000027
 322
 323 /* Obsolete address translation table (for debug info) */
 324 #define SHT_MIPS_XLATE_OLD      0x70000028
 325
 326 /* Runtime procedure descriptor table exception information (ucode) ??? */
 327 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 328
 329
 330 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 331    following structure.  The sh_link field is the section index of the
 332    string table.  The sh_info field is the number of entries in the
 333    section.  */
 334 typedef struct
 335 {
 336   /* String table index for name of shared object.  */
 337   unsigned long l_name;
 338   /* Time stamp.  */
 339   unsigned long l_time_stamp;
 340   /* Checksum of symbol names and common sizes.  */
 341   unsigned long l_checksum;
 342   /* String table index for version.  */
 343   unsigned long l_version;
 344   /* Flags.  */
 345   unsigned long l_flags;
 346 } Elf32_Lib;
 347
 348 /* The external version of Elf32_Lib.  */
 349 typedef struct
 350 {
 351   unsigned char l_name[4];
 352   unsigned char l_time_stamp[4];
 353   unsigned char l_checksum[4];
 354   unsigned char l_version[4];
 355   unsigned char l_flags[4];
 356 } Elf32_External_Lib;
 357
 358 /* The l_flags field of an Elf32_Lib structure may contain the
 359    following flags.  */
 360
 361 /* Require an exact match at runtime.  */
 362 #define LL_EXACT_MATCH          0x00000001
 363
 364 /* Ignore version incompatibilities at runtime.  */
 365 #define LL_IGNORE_INT_VER       0x00000002
 366
 367 /* Require matching minor version number.  */
 368 #define LL_REQUIRE_MINOR        0x00000004
 369
 370 /* ??? */
 371 #define LL_EXPORTS              0x00000008
 372
 373 /* Delay loading of this library until really needed.  */
 374 #define LL_DELAY_LOAD           0x00000010
 375
 376 /* ??? Delta C++ stuff ??? */
 377 #define LL_DELTA                0x00000020
 378
 379
 380 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 381    .dynsym section.  Each element has the following type.  */
 382 typedef unsigned long Elf32_Conflict;
 383 typedef unsigned char Elf32_External_Conflict[4];
 384
 385 typedef unsigned long Elf64_Conflict;
 386 typedef unsigned char Elf64_External_Conflict[8];
 387
 388 /* A section of type SHT_MIPS_GPTAB contains information about how
 389    much GP space would be required for different -G arguments.  This
 390    information is only used so that the linker can provide informative
 391    suggestions as to the best -G value to use.  The sh_info field is
 392    the index of the section for which this information applies.  The
 393    contents of the section are an array of the following union.  The
 394    first element uses the gt_header field.  The remaining elements use
 395    the gt_entry field.  */
 396 typedef union
 397 {
 398   struct
 399     {
 400       /* -G value actually used for this object file.  */
 401       unsigned long gt_current_g_value;
 402       /* Unused.  */
 403       unsigned long gt_unused;
 404     } gt_header;
 405   struct
 406     {
 407       /* If this -G argument has been used...  */
 408       unsigned long gt_g_value;
 409       /* ...this many GP section bytes would be required.  */
 410       unsigned long gt_bytes;
 411     } gt_entry;
 412 } Elf32_gptab;
 413
 414 /* The external version of Elf32_gptab.  */
 415
 416 typedef union
 417 {
 418   struct
 419     {
 420       unsigned char gt_current_g_value[4];
 421       unsigned char gt_unused[4];
 422     } gt_header;
 423   struct
 424     {
 425       unsigned char gt_g_value[4];
 426       unsigned char gt_bytes[4];
 427     } gt_entry;
 428 } Elf32_External_gptab;
 429
 430 /* A section of type SHT_MIPS_REGINFO contains the following
 431    structure.  */
 432 typedef struct
 433 {
 434   /* Mask of general purpose registers used.  */
 435   unsigned long ri_gprmask;
 436   /* Mask of co-processor registers used.  */
 437   unsigned long ri_cprmask[4];
 438   /* GP register value for this object file.  */
 439   long ri_gp_value;
 440 } Elf32_RegInfo;
 441
 442 /* The external version of the Elf_RegInfo structure.  */
 443 typedef struct
 444 {
 445   unsigned char ri_gprmask[4];
 446   unsigned char ri_cprmask[4][4];
 447   unsigned char ri_gp_value[4];
 448 } Elf32_External_RegInfo;
 449
 450 /* MIPS ELF .reginfo swapping routines.  */
 451 extern void bfd_mips_elf32_swap_reginfo_in
 452   PARAMS ((bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *));
 453 extern void bfd_mips_elf32_swap_reginfo_out
 454   PARAMS ((bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *));
 455 \f
 456 /* Processor specific section flags.  */
 457
 458 /* This section must be in the global data area.  */
 459 #define SHF_MIPS_GPREL          0x10000000
 460
 461 /* This section should be merged.  */
 462 #define SHF_MIPS_MERGE          0x20000000
 463
 464 /* This section contains address data of size implied by section
 465    element size.  */
 466 #define SHF_MIPS_ADDR           0x40000000
 467
 468 /* This section contains string data.  */
 469 #define SHF_MIPS_STRING         0x80000000
 470
 471 /* This section may not be stripped.  */
 472 #define SHF_MIPS_NOSTRIP        0x08000000
 473
 474 /* This section is local to threads.  */
 475 #define SHF_MIPS_LOCAL          0x04000000
 476
 477 /* Linker should generate implicit weak names for this section.  */
 478 #define SHF_MIPS_NAMES          0x02000000
 479
 480 /* Section contais text/data which may be replicated in other sections.
 481    Linker should retain only one copy.  */
 482 #define SHF_MIPS_NODUPES        0x01000000
 483 \f
 484 /* Processor specific program header types.  */
 485
 486 /* Register usage information.  Identifies one .reginfo section.  */
 487 #define PT_MIPS_REGINFO         0x70000000
 488
 489 /* Runtime procedure table.  */
 490 #define PT_MIPS_RTPROC          0x70000001
 491
 492 /* .MIPS.options section.  */
 493 #define PT_MIPS_OPTIONS         0x70000002
 494 \f
 495 /* Processor specific dynamic array tags.  */
 496
 497 /* 32 bit version number for runtime linker interface.  */
 498 #define DT_MIPS_RLD_VERSION     0x70000001
 499
 500 /* Time stamp.  */
 501 #define DT_MIPS_TIME_STAMP      0x70000002
 502
 503 /* Checksum of external strings and common sizes.  */
 504 #define DT_MIPS_ICHECKSUM       0x70000003
 505
 506 /* Index of version string in string table.  */
 507 #define DT_MIPS_IVERSION        0x70000004
 508
 509 /* 32 bits of flags.  */
 510 #define DT_MIPS_FLAGS           0x70000005
 511
 512 /* Base address of the segment.  */
 513 #define DT_MIPS_BASE_ADDRESS    0x70000006
 514
 515 /* ??? */
 516 #define DT_MIPS_MSYM            0x70000007
 517
 518 /* Address of .conflict section.  */
 519 #define DT_MIPS_CONFLICT        0x70000008
 520
 521 /* Address of .liblist section.  */
 522 #define DT_MIPS_LIBLIST         0x70000009
 523
 524 /* Number of local global offset table entries.  */
 525 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 526
 527 /* Number of entries in the .conflict section.  */
 528 #define DT_MIPS_CONFLICTNO      0x7000000b
 529
 530 /* Number of entries in the .liblist section.  */
 531 #define DT_MIPS_LIBLISTNO       0x70000010
 532
 533 /* Number of entries in the .dynsym section.  */
 534 #define DT_MIPS_SYMTABNO        0x70000011
 535
 536 /* Index of first external dynamic symbol not referenced locally.  */
 537 #define DT_MIPS_UNREFEXTNO      0x70000012
 538
 539 /* Index of first dynamic symbol in global offset table.  */
 540 #define DT_MIPS_GOTSYM          0x70000013
 541
 542 /* Number of page table entries in global offset table.  */
 543 #define DT_MIPS_HIPAGENO        0x70000014
 544
 545 /* Address of run time loader map, used for debugging.  */
 546 #define DT_MIPS_RLD_MAP         0x70000016
 547
 548 /* Delta C++ class definition.  */
 549 #define DT_MIPS_DELTA_CLASS     0x70000017
 550
 551 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 552 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 553
 554 /* Delta C++ class instances.  */
 555 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 556
 557 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 558 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 559
 560 /* Delta relocations.  */
 561 #define DT_MIPS_DELTA_RELOC     0x7000001b
 562
 563 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 564 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 565
 566 /* Delta symbols that Delta relocations refer to.  */
 567 #define DT_MIPS_DELTA_SYM       0x7000001d
 568
 569 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 570 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 571
 572 /* Delta symbols that hold class declarations.  */
 573 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 574
 575 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 576 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 577
 578 /* Flags indicating information about C++ flavor.  */
 579 #define DT_MIPS_CXX_FLAGS       0x70000022
 580
 581 /* Pixie information (???).  */
 582 #define DT_MIPS_PIXIE_INIT      0x70000023
 583
 584 /* Address of .MIPS.symlib */
 585 #define DT_MIPS_SYMBOL_LIB      0x70000024
 586
 587 /* The GOT index of the first PTE for a segment */
 588 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 589
 590 /* The GOT index of the first PTE for a local symbol */
 591 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 592
 593 /* The GOT index of the first PTE for a hidden symbol */
 594 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 595
 596 /* The GOT index of the first PTE for a protected symbol */
 597 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 598
 599 /* Address of `.MIPS.options'.  */
 600 #define DT_MIPS_OPTIONS         0x70000029
 601
 602 /* Address of `.interface'.  */
 603 #define DT_MIPS_INTERFACE       0x7000002a
 604
 605 /* ??? */
 606 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 607
 608 /* Size of the .interface section.  */
 609 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 610
 611 /* Size of rld_text_resolve function stored in the GOT.  */
 612 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 613
 614 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 615 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 616
 617 /* Size of compact relocation section (O32).  */
 618 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 619
 620 /* GP value for auxiliary GOTs.  */
 621 #define DT_MIPS_GP_VALUE        0x70000030
 622
 623 /* Address of auxiliary .dynamic.  */
 624 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 625 \f
 626 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 627
 628 /* No flags.  */
 629 #define RHF_NONE                0x00000000
 630
 631 /* Uses shortcut pointers.  */
 632 #define RHF_QUICKSTART          0x00000001
 633
 634 /* Hash size is not a power of two.  */
 635 #define RHF_NOTPOT              0x00000002
 636
 637 /* Ignore LD_LIBRARY_PATH.  */
 638 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
 639
 640 /* DSO address may not be relocated. */
 641 #define RHF_NO_MOVE             0x00000008
 642
 643 /* SGI specific features. */
 644 #define RHF_SGI_ONLY            0x00000010
 645
 646 /* Guarantee that .init will finish executing before any non-init
 647    code in DSO is called. */
 648 #define RHF_GUARANTEE_INIT         0x00000020
 649
 650 /* Contains Delta C++ code. */
 651 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 652
 653 /* Guarantee that .init will start executing before any non-init
 654    code in DSO is called. */
 655 #define RHF_GUARANTEE_START_INIT   0x00000080
 656
 657 /* Generated by pixie. */
 658 #define RHF_PIXIE                  0x00000100
 659
 660 /* Delay-load DSO by default. */
 661 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 662
 663 /* Object may be requickstarted */
 664 #define RHF_REQUICKSTART           0x00000400
 665
 666 /* Object has been requickstarted */
 667 #define RHF_REQUICKSTARTED         0x00000800
 668
 669 /* Generated by cord. */
 670 #define RHF_CORD                   0x00001000
 671
 672 /* Object contains no unresolved undef symbols. */
 673 #define RHF_NO_UNRES_UNDEF         0x00002000
 674
 675 /* Symbol table is in a safe order. */
 676 #define RHF_RLD_ORDER_SAFE         0x00004000
 677 \f
 678 /* Special values for the st_other field in the symbol table.  These
 679    are used in an Irix 5 dynamic symbol table.  */
 680
 681 #define STO_DEFAULT             STV_DEFAULT
 682 #define STO_INTERNAL            STV_INTERNAL
 683 #define STO_HIDDEN              STV_HIDDEN
 684 #define STO_PROTECTED           STV_PROTECTED
 685
 686 /* This value is used for a mips16 .text symbol.  */
 687 #define STO_MIPS16              0xf0
 688 \f
 689 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 690    relocation entry specifies up to three actual relocations, all at
 691    the same address.  The first relocation which required a symbol
 692    uses the symbol in the r_sym field.  The second relocation which
 693    requires a symbol uses the symbol in the r_ssym field.  If all
 694    three relocations require a symbol, the third one uses a zero
 695    value.  */
 696
 697 /* An entry in a 64 bit SHT_REL section.  */
 698
 699 typedef struct
 700 {
 701   /* Address of relocation.  */
 702   unsigned char r_offset[8];
 703   /* Symbol index.  */
 704   unsigned char r_sym[4];
 705   /* Special symbol.  */
 706   unsigned char r_ssym[1];
 707   /* Third relocation.  */
 708   unsigned char r_type3[1];
 709   /* Second relocation.  */
 710   unsigned char r_type2[1];
 711   /* First relocation.  */
 712   unsigned char r_type[1];
 713 } Elf64_Mips_External_Rel;
 714
 715 typedef struct
 716 {
 717   /* Address of relocation.  */
 718   bfd_vma r_offset;
 719   /* Symbol index.  */
 720   unsigned long r_sym;
 721   /* Special symbol.  */
 722   unsigned char r_ssym;
 723   /* Third relocation.  */
 724   unsigned char r_type3;
 725   /* Second relocation.  */
 726   unsigned char r_type2;
 727   /* First relocation.  */
 728   unsigned char r_type;
 729 } Elf64_Mips_Internal_Rel;
 730
 731 /* An entry in a 64 bit SHT_RELA section.  */
 732
 733 typedef struct
 734 {
 735   /* Address of relocation.  */
 736   unsigned char r_offset[8];
 737   /* Symbol index.  */
 738   unsigned char r_sym[4];
 739   /* Special symbol.  */
 740   unsigned char r_ssym[1];
 741   /* Third relocation.  */
 742   unsigned char r_type3[1];
 743   /* Second relocation.  */
 744   unsigned char r_type2[1];
 745   /* First relocation.  */
 746   unsigned char r_type[1];
 747   /* Addend.  */
 748   unsigned char r_addend[8];
 749 } Elf64_Mips_External_Rela;
 750
 751 typedef struct
 752 {
 753   /* Address of relocation.  */
 754   bfd_vma r_offset;
 755   /* Symbol index.  */
 756   unsigned long r_sym;
 757   /* Special symbol.  */
 758   unsigned char r_ssym;
 759   /* Third relocation.  */
 760   unsigned char r_type3;
 761   /* Second relocation.  */
 762   unsigned char r_type2;
 763   /* First relocation.  */
 764   unsigned char r_type;
 765   /* Addend.  */
 766   bfd_signed_vma r_addend;
 767 } Elf64_Mips_Internal_Rela;
 768
 769 /* MIPS ELF 64 relocation info access macros.  */
 770 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
 771 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
 772 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
 773 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
 774
 775 /* Values found in the r_ssym field of a relocation entry.  */
 776
 777 /* No relocation.  */
 778 #define RSS_UNDEF       0
 779
 780 /* Value of GP.  */
 781 #define RSS_GP          1
 782
 783 /* Value of GP in object being relocated.  */
 784 #define RSS_GP0         2
 785
 786 /* Address of location being relocated.  */
 787 #define RSS_LOC         3
 788 \f
 789 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 790    which starts with this header.  */
 791
 792 typedef struct
 793 {
 794   /* Type of option.  */
 795   unsigned char kind[1];
 796   /* Size of option descriptor, including header.  */
 797   unsigned char size[1];
 798   /* Section index of affected section, or 0 for global option.  */
 799   unsigned char section[2];
 800   /* Information specific to this kind of option.  */
 801   unsigned char info[4];
 802 } Elf_External_Options;
 803
 804 typedef struct
 805 {
 806   /* Type of option.  */
 807   unsigned char kind;
 808   /* Size of option descriptor, including header.  */
 809   unsigned char size;
 810   /* Section index of affected section, or 0 for global option.  */
 811   unsigned short section;
 812   /* Information specific to this kind of option.  */
 813   unsigned long info;
 814 } Elf_Internal_Options;
 815
 816 /* MIPS ELF option header swapping routines.  */
 817 extern void bfd_mips_elf_swap_options_in
 818   PARAMS ((bfd *, const Elf_External_Options *, Elf_Internal_Options *));
 819 extern void bfd_mips_elf_swap_options_out
 820   PARAMS ((bfd *, const Elf_Internal_Options *, Elf_External_Options *));
 821
 822 /* Values which may appear in the kind field of an Elf_Options
 823    structure.  */
 824
 825 /* Undefined.  */
 826 #define ODK_NULL        0
 827
 828 /* Register usage and GP value.  */
 829 #define ODK_REGINFO     1
 830
 831 /* Exception processing information.  */
 832 #define ODK_EXCEPTIONS  2
 833
 834 /* Section padding information.  */
 835 #define ODK_PAD         3
 836
 837 /* Hardware workarounds performed.  */
 838 #define ODK_HWPATCH     4
 839
 840 /* Fill value used by the linker.  */
 841 #define ODK_FILL        5
 842
 843 /* Reserved space for desktop tools.  */
 844 #define ODK_TAGS        6
 845
 846 /* Hardware workarounds, AND bits when merging.  */
 847 #define ODK_HWAND       7
 848
 849 /* Hardware workarounds, OR bits when merging.  */
 850 #define ODK_HWOR        8
 851
 852 /* GP group to use for text/data sections.  */
 853 #define ODK_GP_GROUP    9
 854
 855 /* ID information.  */
 856 #define ODK_IDENT       10
 857
 858 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
 859    structure.  In the 64 bit ABI, it is the following structure.  The
 860    info field of the options header is not used.  */
 861
 862 typedef struct
 863 {
 864   /* Mask of general purpose registers used.  */
 865   unsigned char ri_gprmask[4];
 866   /* Padding.  */
 867   unsigned char ri_pad[4];
 868   /* Mask of co-processor registers used.  */
 869   unsigned char ri_cprmask[4][4];
 870   /* GP register value for this object file.  */
 871   unsigned char ri_gp_value[8];
 872 } Elf64_External_RegInfo;
 873
 874 typedef struct
 875 {
 876   /* Mask of general purpose registers used.  */
 877   unsigned long ri_gprmask;
 878   /* Padding.  */
 879   unsigned long ri_pad;
 880   /* Mask of co-processor registers used.  */
 881   unsigned long ri_cprmask[4];
 882   /* GP register value for this object file.  */
 883   bfd_vma ri_gp_value;
 884 } Elf64_Internal_RegInfo;
 885
 886 typedef struct
 887 {
 888   /* The hash value computed from the name of the corresponding
 889      dynamic symbol.  */
 890   unsigned char ms_hash_value[4];
 891   /* Contains both the dynamic relocation index and the symbol flags
 892      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 893      to access the individual values.  The dynamic relocation index
 894      identifies the first entry in the .rel.dyn section that
 895      references the dynamic symbol corresponding to this msym entry.
 896      If the index is 0, no dynamic relocations are associated with the
 897      symbol.  The symbol flags field is reserved for future use.  */
 898   unsigned char ms_info[4];
 899 } Elf32_External_Msym;
 900
 901 typedef struct
 902 {
 903   /* The hash value computed from the name of the corresponding
 904      dynamic symbol.  */
 905   unsigned long ms_hash_value;
 906   /* Contains both the dynamic relocation index and the symbol flags
 907      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 908      to access the individual values.  The dynamic relocation index
 909      identifies the first entry in the .rel.dyn section that
 910      references the dynamic symbol corresponding to this msym entry.
 911      If the index is 0, no dynamic relocations are associated with the
 912      symbol.  The symbol flags field is reserved for future use.  */
 913   unsigned long ms_info;
 914 } Elf32_Internal_Msym;
 915
 916 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
 917 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
 918 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
 919
 920 /* MIPS ELF reginfo swapping routines.  */
 921 extern void bfd_mips_elf64_swap_reginfo_in
 922   PARAMS ((bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *));
 923 extern void bfd_mips_elf64_swap_reginfo_out
 924   PARAMS ((bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *));
 925
 926 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
 927 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
 928 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
 929 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
 930 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
 931 #define OEX_FPDBUG      0x40000 /* Force precise floating-point
 932                                    exceptions (debug mode).  */
 933 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
 934
 935 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
 936 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
 937 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
 938 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
 939 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
 940 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
 941
 942 /* Masks for the info word of an ODK_PAD descriptor.  */
 943 #define OPAD_PREFIX     0x01
 944 #define OPAD_POSTFIX    0x02
 945 #define OPAD_SYMBOL     0x04
 946
 947 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
 948 #define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
 949 #define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
 950 #define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
 951 #define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
 952                                            (clean == 1).  */
 953 #define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
 954                                            load patch. */
 955
 956 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
 957 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
 958 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
 959
 960 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
 961 #define OHWA0_R4KEOP_CHECKED    0x00000001
 962 #define OHWA0_R4KEOP_CLEAN      0x00000002
 963 \f
 964
 965 #endif /* _ELF_MIPS_H */