include/elf/mips.h

   1 /* MIPS ELF support for BFD.
   2    Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003
   3    Free Software Foundation, Inc.
   4
   5    By Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>, from
   6    information in the System V Application Binary Interface, MIPS
   7    Processor Supplement.
   8
   9 This file is part of BFD, the Binary File Descriptor library.
  10
  11 This program is free software; you can redistribute it and/or modify
  12 it under the terms of the GNU General Public License as published by
  13 the Free Software Foundation; either version 2 of the License, or
  14 (at your option) any later version.
  15
  16 This program is distributed in the hope that it will be useful,
  17 but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 GNU General Public License for more details.
  20
  21 You should have received a copy of the GNU General Public License
  22 along with this program; if not, write to the Free Software
  23 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  24
  25 /* This file holds definitions specific to the MIPS ELF ABI.  Note
  26    that most of this is not actually implemented by BFD.  */
  27
  28 #ifndef _ELF_MIPS_H
  29 #define _ELF_MIPS_H
  30
  31 #include "elf/reloc-macros.h"
  32
  33 /* Relocation types.  */
  34 START_RELOC_NUMBERS (elf_mips_reloc_type)
  35   RELOC_NUMBER (R_MIPS_NONE, 0)
  36   RELOC_NUMBER (R_MIPS_16, 1)
  37   RELOC_NUMBER (R_MIPS_32, 2)           /* In Elf 64: alias R_MIPS_ADD */
  38   RELOC_NUMBER (R_MIPS_REL32, 3)        /* In Elf 64: alias R_MIPS_REL */
  39   RELOC_NUMBER (R_MIPS_26, 4)
  40   RELOC_NUMBER (R_MIPS_HI16, 5)
  41   RELOC_NUMBER (R_MIPS_LO16, 6)
  42   RELOC_NUMBER (R_MIPS_GPREL16, 7)      /* In Elf 64: alias R_MIPS_GPREL */
  43   RELOC_NUMBER (R_MIPS_LITERAL, 8)
  44   RELOC_NUMBER (R_MIPS_GOT16, 9)        /* In Elf 64: alias R_MIPS_GOT */
  45   RELOC_NUMBER (R_MIPS_PC16, 10)
  46   RELOC_NUMBER (R_MIPS_CALL16, 11)      /* In Elf 64: alias R_MIPS_CALL */
  47   RELOC_NUMBER (R_MIPS_GPREL32, 12)
  48   /* The remaining relocs are defined on Irix, although they are not
  49      in the MIPS ELF ABI.  */
  50   RELOC_NUMBER (R_MIPS_UNUSED1, 13)
  51   RELOC_NUMBER (R_MIPS_UNUSED2, 14)
  52   RELOC_NUMBER (R_MIPS_UNUSED3, 15)
  53   RELOC_NUMBER (R_MIPS_SHIFT5, 16)
  54   RELOC_NUMBER (R_MIPS_SHIFT6, 17)
  55   RELOC_NUMBER (R_MIPS_64, 18)
  56   RELOC_NUMBER (R_MIPS_GOT_DISP, 19)
  57   RELOC_NUMBER (R_MIPS_GOT_PAGE, 20)
  58   RELOC_NUMBER (R_MIPS_GOT_OFST, 21)
  59   RELOC_NUMBER (R_MIPS_GOT_HI16, 22)
  60   RELOC_NUMBER (R_MIPS_GOT_LO16, 23)
  61   RELOC_NUMBER (R_MIPS_SUB, 24)
  62   RELOC_NUMBER (R_MIPS_INSERT_A, 25)
  63   RELOC_NUMBER (R_MIPS_INSERT_B, 26)
  64   RELOC_NUMBER (R_MIPS_DELETE, 27)
  65   RELOC_NUMBER (R_MIPS_HIGHER, 28)
  66   RELOC_NUMBER (R_MIPS_HIGHEST, 29)
  67   RELOC_NUMBER (R_MIPS_CALL_HI16, 30)
  68   RELOC_NUMBER (R_MIPS_CALL_LO16, 31)
  69   RELOC_NUMBER (R_MIPS_SCN_DISP, 32)
  70   RELOC_NUMBER (R_MIPS_REL16, 33)
  71   RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34)
  72   RELOC_NUMBER (R_MIPS_PJUMP, 35)
  73   RELOC_NUMBER (R_MIPS_RELGOT, 36)
  74   RELOC_NUMBER (R_MIPS_JALR, 37)
  75   FAKE_RELOC (R_MIPS_max, 38)
  76   /* These relocs are used for the mips16.  */
  77   FAKE_RELOC (R_MIPS16_min, 100)
  78   RELOC_NUMBER (R_MIPS16_26, 100)
  79   RELOC_NUMBER (R_MIPS16_GPREL, 101)
  80   RELOC_NUMBER (R_MIPS16_GOT16, 102)
  81   RELOC_NUMBER (R_MIPS16_CALL16, 103)
  82   RELOC_NUMBER (R_MIPS16_HI16, 104)
  83   RELOC_NUMBER (R_MIPS16_LO16, 105)
  84   FAKE_RELOC (R_MIPS16_max, 106)
  85   /* This was a GNU extension used by embedded-PIC.  It was co-opted by
  86      mips-linux for exception-handling data.  It is no longer used, but
  87      should continue to be supported by the linker for backward
  88      compatibility.  (GCC stopped using it in May, 2004.)  */
  89   RELOC_NUMBER (R_MIPS_PC32, 248)
  90   /* FIXME: this relocation is used internally by gas.  */
  91   RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250)
  92   /* These are GNU extensions to enable C++ vtable garbage collection.  */
  93   RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253)
  94   RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254)
  95 END_RELOC_NUMBERS (R_MIPS_maxext)
  96
  97 /* Processor specific flags for the ELF header e_flags field.  */
  98
  99 /* At least one .noreorder directive appears in the source.  */
 100 #define EF_MIPS_NOREORDER       0x00000001
 101
 102 /* File contains position independent code.  */
 103 #define EF_MIPS_PIC             0x00000002
 104
 105 /* Code in file uses the standard calling sequence for calling
 106    position independent code.  */
 107 #define EF_MIPS_CPIC            0x00000004
 108
 109 /* ???  Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a.  */
 110 #define EF_MIPS_XGOT            0x00000008
 111
 112 /* Code in file uses UCODE (obsolete) */
 113 #define EF_MIPS_UCODE           0x00000010
 114
 115 /* Code in file uses new ABI (-n32 on Irix 6).  */
 116 #define EF_MIPS_ABI2            0x00000020
 117
 118 /* Process the .MIPS.options section first by ld */
 119 #define EF_MIPS_OPTIONS_FIRST   0x00000080
 120
 121 /* Architectural Extensions used by this file */
 122 #define EF_MIPS_ARCH_ASE        0x0f000000
 123
 124 /* Use MDMX multimedia extensions */
 125 #define EF_MIPS_ARCH_ASE_MDMX   0x08000000
 126
 127 /* Use MIPS-16 ISA extensions */
 128 #define EF_MIPS_ARCH_ASE_M16    0x04000000
 129
 130 /* Indicates code compiled for a 64-bit machine in 32-bit mode.
 131    (regs are 32-bits wide.) */
 132 #define EF_MIPS_32BITMODE       0x00000100
 133
 134 /* Four bit MIPS architecture field.  */
 135 #define EF_MIPS_ARCH            0xf0000000
 136
 137 /* -mips1 code.  */
 138 #define E_MIPS_ARCH_1           0x00000000
 139
 140 /* -mips2 code.  */
 141 #define E_MIPS_ARCH_2           0x10000000
 142
 143 /* -mips3 code.  */
 144 #define E_MIPS_ARCH_3           0x20000000
 145
 146 /* -mips4 code.  */
 147 #define E_MIPS_ARCH_4           0x30000000
 148
 149 /* -mips5 code.  */
 150 #define E_MIPS_ARCH_5           0x40000000
 151
 152 /* -mips32 code.  */
 153 #define E_MIPS_ARCH_32          0x50000000
 154
 155 /* -mips64 code.  */
 156 #define E_MIPS_ARCH_64          0x60000000
 157
 158 /* -mips32r2 code.  */
 159 #define E_MIPS_ARCH_32R2        0x70000000
 160
 161 /* -mips64r2 code.  */
 162 #define E_MIPS_ARCH_64R2        0x80000000
 163
 164 /* The ABI of the file.  Also see EF_MIPS_ABI2 above. */
 165 #define EF_MIPS_ABI             0x0000F000
 166
 167 /* The original o32 abi. */
 168 #define E_MIPS_ABI_O32          0x00001000
 169
 170 /* O32 extended to work on 64 bit architectures */
 171 #define E_MIPS_ABI_O64          0x00002000
 172
 173 /* EABI in 32 bit mode */
 174 #define E_MIPS_ABI_EABI32       0x00003000
 175
 176 /* EABI in 64 bit mode */
 177 #define E_MIPS_ABI_EABI64       0x00004000
 178
 179
 180 /* Machine variant if we know it.  This field was invented at Cygnus,
 181    but it is hoped that other vendors will adopt it.  If some standard
 182    is developed, this code should be changed to follow it. */
 183
 184 #define EF_MIPS_MACH            0x00FF0000
 185
 186 /* Cygnus is choosing values between 80 and 9F;
 187    00 - 7F should be left for a future standard;
 188    the rest are open. */
 189
 190 #define E_MIPS_MACH_3900        0x00810000
 191 #define E_MIPS_MACH_4010        0x00820000
 192 #define E_MIPS_MACH_4100        0x00830000
 193 #define E_MIPS_MACH_4650        0x00850000
 194 #define E_MIPS_MACH_4120        0x00870000
 195 #define E_MIPS_MACH_4111        0x00880000
 196 #define E_MIPS_MACH_SB1         0x008a0000
 197 #define E_MIPS_MACH_5400        0x00910000
 198 #define E_MIPS_MACH_5500        0x00980000
 199 #define E_MIPS_MACH_9000        0x00990000
 200 \f
 201 /* Processor specific section indices.  These sections do not actually
 202    exist.  Symbols with a st_shndx field corresponding to one of these
 203    values have a special meaning.  */
 204
 205 /* Defined and allocated common symbol.  Value is virtual address.  If
 206    relocated, alignment must be preserved.  */
 207 #define SHN_MIPS_ACOMMON        0xff00
 208
 209 /* Defined and allocated text symbol.  Value is virtual address.
 210    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 211 #define SHN_MIPS_TEXT           0xff01
 212
 213 /* Defined and allocated data symbol.  Value is virtual address.
 214    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 215 #define SHN_MIPS_DATA           0xff02
 216
 217 /* Small common symbol.  */
 218 #define SHN_MIPS_SCOMMON        0xff03
 219
 220 /* Small undefined symbol.  */
 221 #define SHN_MIPS_SUNDEFINED     0xff04
 222 \f
 223 /* Processor specific section types.  */
 224
 225 /* Section contains the set of dynamic shared objects used when
 226    statically linking.  */
 227 #define SHT_MIPS_LIBLIST        0x70000000
 228
 229 /* I'm not sure what this is, but it's used on Irix 5.  */
 230 #define SHT_MIPS_MSYM           0x70000001
 231
 232 /* Section contains list of symbols whose definitions conflict with
 233    symbols defined in shared objects.  */
 234 #define SHT_MIPS_CONFLICT       0x70000002
 235
 236 /* Section contains the global pointer table.  */
 237 #define SHT_MIPS_GPTAB          0x70000003
 238
 239 /* Section contains microcode information.  The exact format is
 240    unspecified.  */
 241 #define SHT_MIPS_UCODE          0x70000004
 242
 243 /* Section contains some sort of debugging information.  The exact
 244    format is unspecified.  It's probably ECOFF symbols.  */
 245 #define SHT_MIPS_DEBUG          0x70000005
 246
 247 /* Section contains register usage information.  */
 248 #define SHT_MIPS_REGINFO        0x70000006
 249
 250 /* ??? */
 251 #define SHT_MIPS_PACKAGE        0x70000007
 252
 253 /* ??? */
 254 #define SHT_MIPS_PACKSYM        0x70000008
 255
 256 /* ??? */
 257 #define SHT_MIPS_RELD           0x70000009
 258
 259 /* Section contains interface information.  */
 260 #define SHT_MIPS_IFACE          0x7000000b
 261
 262 /* Section contains description of contents of another section.  */
 263 #define SHT_MIPS_CONTENT        0x7000000c
 264
 265 /* Section contains miscellaneous options.  */
 266 #define SHT_MIPS_OPTIONS        0x7000000d
 267
 268 /* ??? */
 269 #define SHT_MIPS_SHDR           0x70000010
 270
 271 /* ??? */
 272 #define SHT_MIPS_FDESC          0x70000011
 273
 274 /* ??? */
 275 #define SHT_MIPS_EXTSYM         0x70000012
 276
 277 /* ??? */
 278 #define SHT_MIPS_DENSE          0x70000013
 279
 280 /* ??? */
 281 #define SHT_MIPS_PDESC          0x70000014
 282
 283 /* ??? */
 284 #define SHT_MIPS_LOCSYM         0x70000015
 285
 286 /* ??? */
 287 #define SHT_MIPS_AUXSYM         0x70000016
 288
 289 /* ??? */
 290 #define SHT_MIPS_OPTSYM         0x70000017
 291
 292 /* ??? */
 293 #define SHT_MIPS_LOCSTR         0x70000018
 294
 295 /* ??? */
 296 #define SHT_MIPS_LINE           0x70000019
 297
 298 /* ??? */
 299 #define SHT_MIPS_RFDESC         0x7000001a
 300
 301 /* Delta C++: symbol table */
 302 #define SHT_MIPS_DELTASYM       0x7000001b
 303
 304 /* Delta C++: instance table */
 305 #define SHT_MIPS_DELTAINST      0x7000001c
 306
 307 /* Delta C++: class table */
 308 #define SHT_MIPS_DELTACLASS     0x7000001d
 309
 310 /* DWARF debugging section.  */
 311 #define SHT_MIPS_DWARF          0x7000001e
 312
 313 /* Delta C++: declarations */
 314 #define SHT_MIPS_DELTADECL      0x7000001f
 315
 316 /* List of libraries the binary depends on.  Includes a time stamp, version
 317    number.  */
 318 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 319
 320 /* Events section.  */
 321 #define SHT_MIPS_EVENTS         0x70000021
 322
 323 /* ??? */
 324 #define SHT_MIPS_TRANSLATE      0x70000022
 325
 326 /* Special pixie sections */
 327 #define SHT_MIPS_PIXIE          0x70000023
 328
 329 /* Address translation table (for debug info) */
 330 #define SHT_MIPS_XLATE          0x70000024
 331
 332 /* SGI internal address translation table (for debug info) */
 333 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 334
 335 /* Intermediate code */
 336 #define SHT_MIPS_WHIRL          0x70000026
 337
 338 /* C++ exception handling region info */
 339 #define SHT_MIPS_EH_REGION      0x70000027
 340
 341 /* Obsolete address translation table (for debug info) */
 342 #define SHT_MIPS_XLATE_OLD      0x70000028
 343
 344 /* Runtime procedure descriptor table exception information (ucode) ??? */
 345 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 346
 347
 348 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 349    following structure.  The sh_link field is the section index of the
 350    string table.  The sh_info field is the number of entries in the
 351    section.  */
 352 typedef struct
 353 {
 354   /* String table index for name of shared object.  */
 355   unsigned long l_name;
 356   /* Time stamp.  */
 357   unsigned long l_time_stamp;
 358   /* Checksum of symbol names and common sizes.  */
 359   unsigned long l_checksum;
 360   /* String table index for version.  */
 361   unsigned long l_version;
 362   /* Flags.  */
 363   unsigned long l_flags;
 364 } Elf32_Lib;
 365
 366 /* The external version of Elf32_Lib.  */
 367 typedef struct
 368 {
 369   unsigned char l_name[4];
 370   unsigned char l_time_stamp[4];
 371   unsigned char l_checksum[4];
 372   unsigned char l_version[4];
 373   unsigned char l_flags[4];
 374 } Elf32_External_Lib;
 375
 376 /* The l_flags field of an Elf32_Lib structure may contain the
 377    following flags.  */
 378
 379 /* Require an exact match at runtime.  */
 380 #define LL_EXACT_MATCH          0x00000001
 381
 382 /* Ignore version incompatibilities at runtime.  */
 383 #define LL_IGNORE_INT_VER       0x00000002
 384
 385 /* Require matching minor version number.  */
 386 #define LL_REQUIRE_MINOR        0x00000004
 387
 388 /* ??? */
 389 #define LL_EXPORTS              0x00000008
 390
 391 /* Delay loading of this library until really needed.  */
 392 #define LL_DELAY_LOAD           0x00000010
 393
 394 /* ??? Delta C++ stuff ??? */
 395 #define LL_DELTA                0x00000020
 396
 397
 398 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 399    .dynsym section.  Each element has the following type.  */
 400 typedef unsigned long Elf32_Conflict;
 401 typedef unsigned char Elf32_External_Conflict[4];
 402
 403 typedef unsigned long Elf64_Conflict;
 404 typedef unsigned char Elf64_External_Conflict[8];
 405
 406 /* A section of type SHT_MIPS_GPTAB contains information about how
 407    much GP space would be required for different -G arguments.  This
 408    information is only used so that the linker can provide informative
 409    suggestions as to the best -G value to use.  The sh_info field is
 410    the index of the section for which this information applies.  The
 411    contents of the section are an array of the following union.  The
 412    first element uses the gt_header field.  The remaining elements use
 413    the gt_entry field.  */
 414 typedef union
 415 {
 416   struct
 417     {
 418       /* -G value actually used for this object file.  */
 419       unsigned long gt_current_g_value;
 420       /* Unused.  */
 421       unsigned long gt_unused;
 422     } gt_header;
 423   struct
 424     {
 425       /* If this -G argument has been used...  */
 426       unsigned long gt_g_value;
 427       /* ...this many GP section bytes would be required.  */
 428       unsigned long gt_bytes;
 429     } gt_entry;
 430 } Elf32_gptab;
 431
 432 /* The external version of Elf32_gptab.  */
 433
 434 typedef union
 435 {
 436   struct
 437     {
 438       unsigned char gt_current_g_value[4];
 439       unsigned char gt_unused[4];
 440     } gt_header;
 441   struct
 442     {
 443       unsigned char gt_g_value[4];
 444       unsigned char gt_bytes[4];
 445     } gt_entry;
 446 } Elf32_External_gptab;
 447
 448 /* A section of type SHT_MIPS_REGINFO contains the following
 449    structure.  */
 450 typedef struct
 451 {
 452   /* Mask of general purpose registers used.  */
 453   unsigned long ri_gprmask;
 454   /* Mask of co-processor registers used.  */
 455   unsigned long ri_cprmask[4];
 456   /* GP register value for this object file.  */
 457   long ri_gp_value;
 458 } Elf32_RegInfo;
 459
 460 /* The external version of the Elf_RegInfo structure.  */
 461 typedef struct
 462 {
 463   unsigned char ri_gprmask[4];
 464   unsigned char ri_cprmask[4][4];
 465   unsigned char ri_gp_value[4];
 466 } Elf32_External_RegInfo;
 467
 468 /* MIPS ELF .reginfo swapping routines.  */
 469 extern void bfd_mips_elf32_swap_reginfo_in
 470   (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
 471 extern void bfd_mips_elf32_swap_reginfo_out
 472   (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
 473 \f
 474 /* Processor specific section flags.  */
 475
 476 /* This section must be in the global data area.  */
 477 #define SHF_MIPS_GPREL          0x10000000
 478
 479 /* This section should be merged.  */
 480 #define SHF_MIPS_MERGE          0x20000000
 481
 482 /* This section contains address data of size implied by section
 483    element size.  */
 484 #define SHF_MIPS_ADDR           0x40000000
 485
 486 /* This section contains string data.  */
 487 #define SHF_MIPS_STRING         0x80000000
 488
 489 /* This section may not be stripped.  */
 490 #define SHF_MIPS_NOSTRIP        0x08000000
 491
 492 /* This section is local to threads.  */
 493 #define SHF_MIPS_LOCAL          0x04000000
 494
 495 /* Linker should generate implicit weak names for this section.  */
 496 #define SHF_MIPS_NAMES          0x02000000
 497
 498 /* Section contais text/data which may be replicated in other sections.
 499    Linker should retain only one copy.  */
 500 #define SHF_MIPS_NODUPES        0x01000000
 501 \f
 502 /* Processor specific program header types.  */
 503
 504 /* Register usage information.  Identifies one .reginfo section.  */
 505 #define PT_MIPS_REGINFO         0x70000000
 506
 507 /* Runtime procedure table.  */
 508 #define PT_MIPS_RTPROC          0x70000001
 509
 510 /* .MIPS.options section.  */
 511 #define PT_MIPS_OPTIONS         0x70000002
 512 \f
 513 /* Processor specific dynamic array tags.  */
 514
 515 /* 32 bit version number for runtime linker interface.  */
 516 #define DT_MIPS_RLD_VERSION     0x70000001
 517
 518 /* Time stamp.  */
 519 #define DT_MIPS_TIME_STAMP      0x70000002
 520
 521 /* Checksum of external strings and common sizes.  */
 522 #define DT_MIPS_ICHECKSUM       0x70000003
 523
 524 /* Index of version string in string table.  */
 525 #define DT_MIPS_IVERSION        0x70000004
 526
 527 /* 32 bits of flags.  */
 528 #define DT_MIPS_FLAGS           0x70000005
 529
 530 /* Base address of the segment.  */
 531 #define DT_MIPS_BASE_ADDRESS    0x70000006
 532
 533 /* ??? */
 534 #define DT_MIPS_MSYM            0x70000007
 535
 536 /* Address of .conflict section.  */
 537 #define DT_MIPS_CONFLICT        0x70000008
 538
 539 /* Address of .liblist section.  */
 540 #define DT_MIPS_LIBLIST         0x70000009
 541
 542 /* Number of local global offset table entries.  */
 543 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 544
 545 /* Number of entries in the .conflict section.  */
 546 #define DT_MIPS_CONFLICTNO      0x7000000b
 547
 548 /* Number of entries in the .liblist section.  */
 549 #define DT_MIPS_LIBLISTNO       0x70000010
 550
 551 /* Number of entries in the .dynsym section.  */
 552 #define DT_MIPS_SYMTABNO        0x70000011
 553
 554 /* Index of first external dynamic symbol not referenced locally.  */
 555 #define DT_MIPS_UNREFEXTNO      0x70000012
 556
 557 /* Index of first dynamic symbol in global offset table.  */
 558 #define DT_MIPS_GOTSYM          0x70000013
 559
 560 /* Number of page table entries in global offset table.  */
 561 #define DT_MIPS_HIPAGENO        0x70000014
 562
 563 /* Address of run time loader map, used for debugging.  */
 564 #define DT_MIPS_RLD_MAP         0x70000016
 565
 566 /* Delta C++ class definition.  */
 567 #define DT_MIPS_DELTA_CLASS     0x70000017
 568
 569 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 570 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 571
 572 /* Delta C++ class instances.  */
 573 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 574
 575 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 576 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 577
 578 /* Delta relocations.  */
 579 #define DT_MIPS_DELTA_RELOC     0x7000001b
 580
 581 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 582 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 583
 584 /* Delta symbols that Delta relocations refer to.  */
 585 #define DT_MIPS_DELTA_SYM       0x7000001d
 586
 587 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 588 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 589
 590 /* Delta symbols that hold class declarations.  */
 591 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 592
 593 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 594 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 595
 596 /* Flags indicating information about C++ flavor.  */
 597 #define DT_MIPS_CXX_FLAGS       0x70000022
 598
 599 /* Pixie information (???).  */
 600 #define DT_MIPS_PIXIE_INIT      0x70000023
 601
 602 /* Address of .MIPS.symlib */
 603 #define DT_MIPS_SYMBOL_LIB      0x70000024
 604
 605 /* The GOT index of the first PTE for a segment */
 606 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 607
 608 /* The GOT index of the first PTE for a local symbol */
 609 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 610
 611 /* The GOT index of the first PTE for a hidden symbol */
 612 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 613
 614 /* The GOT index of the first PTE for a protected symbol */
 615 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 616
 617 /* Address of `.MIPS.options'.  */
 618 #define DT_MIPS_OPTIONS         0x70000029
 619
 620 /* Address of `.interface'.  */
 621 #define DT_MIPS_INTERFACE       0x7000002a
 622
 623 /* ??? */
 624 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 625
 626 /* Size of the .interface section.  */
 627 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 628
 629 /* Size of rld_text_resolve function stored in the GOT.  */
 630 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 631
 632 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 633 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 634
 635 /* Size of compact relocation section (O32).  */
 636 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 637
 638 /* GP value for auxiliary GOTs.  */
 639 #define DT_MIPS_GP_VALUE        0x70000030
 640
 641 /* Address of auxiliary .dynamic.  */
 642 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 643 \f
 644 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 645
 646 /* No flags.  */
 647 #define RHF_NONE                0x00000000
 648
 649 /* Uses shortcut pointers.  */
 650 #define RHF_QUICKSTART          0x00000001
 651
 652 /* Hash size is not a power of two.  */
 653 #define RHF_NOTPOT              0x00000002
 654
 655 /* Ignore LD_LIBRARY_PATH.  */
 656 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
 657
 658 /* DSO address may not be relocated. */
 659 #define RHF_NO_MOVE             0x00000008
 660
 661 /* SGI specific features. */
 662 #define RHF_SGI_ONLY            0x00000010
 663
 664 /* Guarantee that .init will finish executing before any non-init
 665    code in DSO is called. */
 666 #define RHF_GUARANTEE_INIT         0x00000020
 667
 668 /* Contains Delta C++ code. */
 669 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 670
 671 /* Guarantee that .init will start executing before any non-init
 672    code in DSO is called. */
 673 #define RHF_GUARANTEE_START_INIT   0x00000080
 674
 675 /* Generated by pixie. */
 676 #define RHF_PIXIE                  0x00000100
 677
 678 /* Delay-load DSO by default. */
 679 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 680
 681 /* Object may be requickstarted */
 682 #define RHF_REQUICKSTART           0x00000400
 683
 684 /* Object has been requickstarted */
 685 #define RHF_REQUICKSTARTED         0x00000800
 686
 687 /* Generated by cord. */
 688 #define RHF_CORD                   0x00001000
 689
 690 /* Object contains no unresolved undef symbols. */
 691 #define RHF_NO_UNRES_UNDEF         0x00002000
 692
 693 /* Symbol table is in a safe order. */
 694 #define RHF_RLD_ORDER_SAFE         0x00004000
 695 \f
 696 /* Special values for the st_other field in the symbol table.  These
 697    are used in an Irix 5 dynamic symbol table.  */
 698
 699 #define STO_DEFAULT             STV_DEFAULT
 700 #define STO_INTERNAL            STV_INTERNAL
 701 #define STO_HIDDEN              STV_HIDDEN
 702 #define STO_PROTECTED           STV_PROTECTED
 703
 704 /* This value is used for a mips16 .text symbol.  */
 705 #define STO_MIPS16              0xf0
 706 \f
 707 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 708    relocation entry specifies up to three actual relocations, all at
 709    the same address.  The first relocation which required a symbol
 710    uses the symbol in the r_sym field.  The second relocation which
 711    requires a symbol uses the symbol in the r_ssym field.  If all
 712    three relocations require a symbol, the third one uses a zero
 713    value.  */
 714
 715 /* An entry in a 64 bit SHT_REL section.  */
 716
 717 typedef struct
 718 {
 719   /* Address of relocation.  */
 720   unsigned char r_offset[8];
 721   /* Symbol index.  */
 722   unsigned char r_sym[4];
 723   /* Special symbol.  */
 724   unsigned char r_ssym[1];
 725   /* Third relocation.  */
 726   unsigned char r_type3[1];
 727   /* Second relocation.  */
 728   unsigned char r_type2[1];
 729   /* First relocation.  */
 730   unsigned char r_type[1];
 731 } Elf64_Mips_External_Rel;
 732
 733 typedef struct
 734 {
 735   /* Address of relocation.  */
 736   bfd_vma r_offset;
 737   /* Symbol index.  */
 738   unsigned long r_sym;
 739   /* Special symbol.  */
 740   unsigned char r_ssym;
 741   /* Third relocation.  */
 742   unsigned char r_type3;
 743   /* Second relocation.  */
 744   unsigned char r_type2;
 745   /* First relocation.  */
 746   unsigned char r_type;
 747 } Elf64_Mips_Internal_Rel;
 748
 749 /* An entry in a 64 bit SHT_RELA section.  */
 750
 751 typedef struct
 752 {
 753   /* Address of relocation.  */
 754   unsigned char r_offset[8];
 755   /* Symbol index.  */
 756   unsigned char r_sym[4];
 757   /* Special symbol.  */
 758   unsigned char r_ssym[1];
 759   /* Third relocation.  */
 760   unsigned char r_type3[1];
 761   /* Second relocation.  */
 762   unsigned char r_type2[1];
 763   /* First relocation.  */
 764   unsigned char r_type[1];
 765   /* Addend.  */
 766   unsigned char r_addend[8];
 767 } Elf64_Mips_External_Rela;
 768
 769 typedef struct
 770 {
 771   /* Address of relocation.  */
 772   bfd_vma r_offset;
 773   /* Symbol index.  */
 774   unsigned long r_sym;
 775   /* Special symbol.  */
 776   unsigned char r_ssym;
 777   /* Third relocation.  */
 778   unsigned char r_type3;
 779   /* Second relocation.  */
 780   unsigned char r_type2;
 781   /* First relocation.  */
 782   unsigned char r_type;
 783   /* Addend.  */
 784   bfd_signed_vma r_addend;
 785 } Elf64_Mips_Internal_Rela;
 786
 787 /* MIPS ELF 64 relocation info access macros.  */
 788 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
 789 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
 790 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
 791 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
 792
 793 /* Values found in the r_ssym field of a relocation entry.  */
 794
 795 /* No relocation.  */
 796 #define RSS_UNDEF       0
 797
 798 /* Value of GP.  */
 799 #define RSS_GP          1
 800
 801 /* Value of GP in object being relocated.  */
 802 #define RSS_GP0         2
 803
 804 /* Address of location being relocated.  */
 805 #define RSS_LOC         3
 806 \f
 807 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 808    which starts with this header.  */
 809
 810 typedef struct
 811 {
 812   /* Type of option.  */
 813   unsigned char kind[1];
 814   /* Size of option descriptor, including header.  */
 815   unsigned char size[1];
 816   /* Section index of affected section, or 0 for global option.  */
 817   unsigned char section[2];
 818   /* Information specific to this kind of option.  */
 819   unsigned char info[4];
 820 } Elf_External_Options;
 821
 822 typedef struct
 823 {
 824   /* Type of option.  */
 825   unsigned char kind;
 826   /* Size of option descriptor, including header.  */
 827   unsigned char size;
 828   /* Section index of affected section, or 0 for global option.  */
 829   unsigned short section;
 830   /* Information specific to this kind of option.  */
 831   unsigned long info;
 832 } Elf_Internal_Options;
 833
 834 /* MIPS ELF option header swapping routines.  */
 835 extern void bfd_mips_elf_swap_options_in
 836   (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
 837 extern void bfd_mips_elf_swap_options_out
 838   (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
 839
 840 /* Values which may appear in the kind field of an Elf_Options
 841    structure.  */
 842
 843 /* Undefined.  */
 844 #define ODK_NULL        0
 845
 846 /* Register usage and GP value.  */
 847 #define ODK_REGINFO     1
 848
 849 /* Exception processing information.  */
 850 #define ODK_EXCEPTIONS  2
 851
 852 /* Section padding information.  */
 853 #define ODK_PAD         3
 854
 855 /* Hardware workarounds performed.  */
 856 #define ODK_HWPATCH     4
 857
 858 /* Fill value used by the linker.  */
 859 #define ODK_FILL        5
 860
 861 /* Reserved space for desktop tools.  */
 862 #define ODK_TAGS        6
 863
 864 /* Hardware workarounds, AND bits when merging.  */
 865 #define ODK_HWAND       7
 866
 867 /* Hardware workarounds, OR bits when merging.  */
 868 #define ODK_HWOR        8
 869
 870 /* GP group to use for text/data sections.  */
 871 #define ODK_GP_GROUP    9
 872
 873 /* ID information.  */
 874 #define ODK_IDENT       10
 875
 876 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
 877    structure.  In the 64 bit ABI, it is the following structure.  The
 878    info field of the options header is not used.  */
 879
 880 typedef struct
 881 {
 882   /* Mask of general purpose registers used.  */
 883   unsigned char ri_gprmask[4];
 884   /* Padding.  */
 885   unsigned char ri_pad[4];
 886   /* Mask of co-processor registers used.  */
 887   unsigned char ri_cprmask[4][4];
 888   /* GP register value for this object file.  */
 889   unsigned char ri_gp_value[8];
 890 } Elf64_External_RegInfo;
 891
 892 typedef struct
 893 {
 894   /* Mask of general purpose registers used.  */
 895   unsigned long ri_gprmask;
 896   /* Padding.  */
 897   unsigned long ri_pad;
 898   /* Mask of co-processor registers used.  */
 899   unsigned long ri_cprmask[4];
 900   /* GP register value for this object file.  */
 901   bfd_vma ri_gp_value;
 902 } Elf64_Internal_RegInfo;
 903
 904 typedef struct
 905 {
 906   /* The hash value computed from the name of the corresponding
 907      dynamic symbol.  */
 908   unsigned char ms_hash_value[4];
 909   /* Contains both the dynamic relocation index and the symbol flags
 910      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 911      to access the individual values.  The dynamic relocation index
 912      identifies the first entry in the .rel.dyn section that
 913      references the dynamic symbol corresponding to this msym entry.
 914      If the index is 0, no dynamic relocations are associated with the
 915      symbol.  The symbol flags field is reserved for future use.  */
 916   unsigned char ms_info[4];
 917 } Elf32_External_Msym;
 918
 919 typedef struct
 920 {
 921   /* The hash value computed from the name of the corresponding
 922      dynamic symbol.  */
 923   unsigned long ms_hash_value;
 924   /* Contains both the dynamic relocation index and the symbol flags
 925      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 926      to access the individual values.  The dynamic relocation index
 927      identifies the first entry in the .rel.dyn section that
 928      references the dynamic symbol corresponding to this msym entry.
 929      If the index is 0, no dynamic relocations are associated with the
 930      symbol.  The symbol flags field is reserved for future use.  */
 931   unsigned long ms_info;
 932 } Elf32_Internal_Msym;
 933
 934 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
 935 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
 936 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
 937
 938 /* MIPS ELF reginfo swapping routines.  */
 939 extern void bfd_mips_elf64_swap_reginfo_in
 940   (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
 941 extern void bfd_mips_elf64_swap_reginfo_out
 942   (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
 943
 944 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
 945 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
 946 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
 947 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
 948 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
 949 #define OEX_FPDBUG      0x40000 /* Force precise floating-point
 950                                    exceptions (debug mode).  */
 951 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
 952
 953 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
 954 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
 955 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
 956 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
 957 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
 958 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
 959
 960 /* Masks for the info word of an ODK_PAD descriptor.  */
 961 #define OPAD_PREFIX     0x01
 962 #define OPAD_POSTFIX    0x02
 963 #define OPAD_SYMBOL     0x04
 964
 965 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
 966 #define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
 967 #define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
 968 #define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
 969 #define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
 970                                            (clean == 1).  */
 971 #define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
 972                                            load patch. */
 973
 974 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
 975 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
 976 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
 977
 978 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
 979 #define OHWA0_R4KEOP_CHECKED    0x00000001
 980 #define OHWA0_R4KEOP_CLEAN      0x00000002
 981 \f
 982
 983 #endif /* _ELF_MIPS_H */