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