include/elf/mips.h

   1 /* MIPS ELF support for BFD.
   2    Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
   3    2003, 2004, 2005
   4    Free Software Foundation, Inc.
   5
   6    By Ian Lance Taylor, Cygnus Support, <ian@cygnus.com>, from
   7    information in the System V Application Binary Interface, MIPS
   8    Processor Supplement.
   9
  10 This file is part of BFD, the Binary File Descriptor library.
  11
  12 This program is free software; you can redistribute it and/or modify
  13 it under the terms of the GNU General Public License as published by
  14 the Free Software Foundation; either version 2 of the License, or
  15 (at your option) any later version.
  16
  17 This program is distributed in the hope that it will be useful,
  18 but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 GNU General Public License for more details.
  21
  22 You should have received a copy of the GNU General Public License
  23 along with this program; if not, write to the Free Software
  24 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  25
  26 /* This file holds definitions specific to the MIPS ELF ABI.  Note
  27    that most of this is not actually implemented by BFD.  */
  28
  29 #ifndef _ELF_MIPS_H
  30 #define _ELF_MIPS_H
  31
  32 #include "elf/reloc-macros.h"
  33
  34 /* Relocation types.  */
  35 START_RELOC_NUMBERS (elf_mips_reloc_type)
  36   RELOC_NUMBER (R_MIPS_NONE, 0)
  37   RELOC_NUMBER (R_MIPS_16, 1)
  38   RELOC_NUMBER (R_MIPS_32, 2)           /* In Elf 64: alias R_MIPS_ADD */
  39   RELOC_NUMBER (R_MIPS_REL32, 3)        /* In Elf 64: alias R_MIPS_REL */
  40   RELOC_NUMBER (R_MIPS_26, 4)
  41   RELOC_NUMBER (R_MIPS_HI16, 5)
  42   RELOC_NUMBER (R_MIPS_LO16, 6)
  43   RELOC_NUMBER (R_MIPS_GPREL16, 7)      /* In Elf 64: alias R_MIPS_GPREL */
  44   RELOC_NUMBER (R_MIPS_LITERAL, 8)
  45   RELOC_NUMBER (R_MIPS_GOT16, 9)        /* In Elf 64: alias R_MIPS_GOT */
  46   RELOC_NUMBER (R_MIPS_PC16, 10)
  47   RELOC_NUMBER (R_MIPS_CALL16, 11)      /* In Elf 64: alias R_MIPS_CALL */
  48   RELOC_NUMBER (R_MIPS_GPREL32, 12)
  49   /* The remaining relocs are defined on Irix, although they are not
  50      in the MIPS ELF ABI.  */
  51   RELOC_NUMBER (R_MIPS_UNUSED1, 13)
  52   RELOC_NUMBER (R_MIPS_UNUSED2, 14)
  53   RELOC_NUMBER (R_MIPS_UNUSED3, 15)
  54   RELOC_NUMBER (R_MIPS_SHIFT5, 16)
  55   RELOC_NUMBER (R_MIPS_SHIFT6, 17)
  56   RELOC_NUMBER (R_MIPS_64, 18)
  57   RELOC_NUMBER (R_MIPS_GOT_DISP, 19)
  58   RELOC_NUMBER (R_MIPS_GOT_PAGE, 20)
  59   RELOC_NUMBER (R_MIPS_GOT_OFST, 21)
  60   RELOC_NUMBER (R_MIPS_GOT_HI16, 22)
  61   RELOC_NUMBER (R_MIPS_GOT_LO16, 23)
  62   RELOC_NUMBER (R_MIPS_SUB, 24)
  63   RELOC_NUMBER (R_MIPS_INSERT_A, 25)
  64   RELOC_NUMBER (R_MIPS_INSERT_B, 26)
  65   RELOC_NUMBER (R_MIPS_DELETE, 27)
  66   RELOC_NUMBER (R_MIPS_HIGHER, 28)
  67   RELOC_NUMBER (R_MIPS_HIGHEST, 29)
  68   RELOC_NUMBER (R_MIPS_CALL_HI16, 30)
  69   RELOC_NUMBER (R_MIPS_CALL_LO16, 31)
  70   RELOC_NUMBER (R_MIPS_SCN_DISP, 32)
  71   RELOC_NUMBER (R_MIPS_REL16, 33)
  72   RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34)
  73   RELOC_NUMBER (R_MIPS_PJUMP, 35)
  74   RELOC_NUMBER (R_MIPS_RELGOT, 36)
  75   RELOC_NUMBER (R_MIPS_JALR, 37)
  76   /* TLS relocations.  */
  77   RELOC_NUMBER (R_MIPS_TLS_DTPMOD32, 38)
  78   RELOC_NUMBER (R_MIPS_TLS_DTPREL32, 39)
  79   RELOC_NUMBER (R_MIPS_TLS_DTPMOD64, 40)
  80   RELOC_NUMBER (R_MIPS_TLS_DTPREL64, 41)
  81   RELOC_NUMBER (R_MIPS_TLS_GD, 42)
  82   RELOC_NUMBER (R_MIPS_TLS_LDM, 43)
  83   RELOC_NUMBER (R_MIPS_TLS_DTPREL_HI16, 44)
  84   RELOC_NUMBER (R_MIPS_TLS_DTPREL_LO16, 45)
  85   RELOC_NUMBER (R_MIPS_TLS_GOTTPREL, 46)
  86   RELOC_NUMBER (R_MIPS_TLS_TPREL32, 47)
  87   RELOC_NUMBER (R_MIPS_TLS_TPREL64, 48)
  88   RELOC_NUMBER (R_MIPS_TLS_TPREL_HI16, 49)
  89   RELOC_NUMBER (R_MIPS_TLS_TPREL_LO16, 50)
  90   RELOC_NUMBER (R_MIPS_GLOB_DAT, 51)
  91   FAKE_RELOC (R_MIPS_max, 52)
  92   /* These relocs are used for the mips16.  */
  93   FAKE_RELOC (R_MIPS16_min, 100)
  94   RELOC_NUMBER (R_MIPS16_26, 100)
  95   RELOC_NUMBER (R_MIPS16_GPREL, 101)
  96   RELOC_NUMBER (R_MIPS16_GOT16, 102)
  97   RELOC_NUMBER (R_MIPS16_CALL16, 103)
  98   RELOC_NUMBER (R_MIPS16_HI16, 104)
  99   RELOC_NUMBER (R_MIPS16_LO16, 105)
 100   FAKE_RELOC (R_MIPS16_max, 106)
 101   /* These relocations are specific to VxWorks.  */
 102   RELOC_NUMBER (R_MIPS_COPY, 126)
 103   RELOC_NUMBER (R_MIPS_JUMP_SLOT, 127)
 104   /* This was a GNU extension used by embedded-PIC.  It was co-opted by
 105      mips-linux for exception-handling data.  It is no longer used, but
 106      should continue to be supported by the linker for backward
 107      compatibility.  (GCC stopped using it in May, 2004.)  */
 108   RELOC_NUMBER (R_MIPS_PC32, 248)
 109   /* FIXME: this relocation is used internally by gas.  */
 110   RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250)
 111   /* These are GNU extensions to enable C++ vtable garbage collection.  */
 112   RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253)
 113   RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254)
 114 END_RELOC_NUMBERS (R_MIPS_maxext)
 115
 116 /* Processor specific flags for the ELF header e_flags field.  */
 117
 118 /* At least one .noreorder directive appears in the source.  */
 119 #define EF_MIPS_NOREORDER       0x00000001
 120
 121 /* File contains position independent code.  */
 122 #define EF_MIPS_PIC             0x00000002
 123
 124 /* Code in file uses the standard calling sequence for calling
 125    position independent code.  */
 126 #define EF_MIPS_CPIC            0x00000004
 127
 128 /* ???  Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a.  */
 129 #define EF_MIPS_XGOT            0x00000008
 130
 131 /* Code in file uses UCODE (obsolete) */
 132 #define EF_MIPS_UCODE           0x00000010
 133
 134 /* Code in file uses new ABI (-n32 on Irix 6).  */
 135 #define EF_MIPS_ABI2            0x00000020
 136
 137 /* Process the .MIPS.options section first by ld */
 138 #define EF_MIPS_OPTIONS_FIRST   0x00000080
 139
 140 /* Architectural Extensions used by this file */
 141 #define EF_MIPS_ARCH_ASE        0x0f000000
 142
 143 /* Use MDMX multimedia extensions */
 144 #define EF_MIPS_ARCH_ASE_MDMX   0x08000000
 145
 146 /* Use MIPS-16 ISA extensions */
 147 #define EF_MIPS_ARCH_ASE_M16    0x04000000
 148
 149 /* Indicates code compiled for a 64-bit machine in 32-bit mode.
 150    (regs are 32-bits wide.) */
 151 #define EF_MIPS_32BITMODE       0x00000100
 152
 153 /* Four bit MIPS architecture field.  */
 154 #define EF_MIPS_ARCH            0xf0000000
 155
 156 /* -mips1 code.  */
 157 #define E_MIPS_ARCH_1           0x00000000
 158
 159 /* -mips2 code.  */
 160 #define E_MIPS_ARCH_2           0x10000000
 161
 162 /* -mips3 code.  */
 163 #define E_MIPS_ARCH_3           0x20000000
 164
 165 /* -mips4 code.  */
 166 #define E_MIPS_ARCH_4           0x30000000
 167
 168 /* -mips5 code.  */
 169 #define E_MIPS_ARCH_5           0x40000000
 170
 171 /* -mips32 code.  */
 172 #define E_MIPS_ARCH_32          0x50000000
 173
 174 /* -mips64 code.  */
 175 #define E_MIPS_ARCH_64          0x60000000
 176
 177 /* -mips32r2 code.  */
 178 #define E_MIPS_ARCH_32R2        0x70000000
 179
 180 /* -mips64r2 code.  */
 181 #define E_MIPS_ARCH_64R2        0x80000000
 182
 183 /* The ABI of the file.  Also see EF_MIPS_ABI2 above. */
 184 #define EF_MIPS_ABI             0x0000F000
 185
 186 /* The original o32 abi. */
 187 #define E_MIPS_ABI_O32          0x00001000
 188
 189 /* O32 extended to work on 64 bit architectures */
 190 #define E_MIPS_ABI_O64          0x00002000
 191
 192 /* EABI in 32 bit mode */
 193 #define E_MIPS_ABI_EABI32       0x00003000
 194
 195 /* EABI in 64 bit mode */
 196 #define E_MIPS_ABI_EABI64       0x00004000
 197
 198
 199 /* Machine variant if we know it.  This field was invented at Cygnus,
 200    but it is hoped that other vendors will adopt it.  If some standard
 201    is developed, this code should be changed to follow it. */
 202
 203 #define EF_MIPS_MACH            0x00FF0000
 204
 205 /* Cygnus is choosing values between 80 and 9F;
 206    00 - 7F should be left for a future standard;
 207    the rest are open. */
 208
 209 #define E_MIPS_MACH_3900        0x00810000
 210 #define E_MIPS_MACH_4010        0x00820000
 211 #define E_MIPS_MACH_4100        0x00830000
 212 #define E_MIPS_MACH_4650        0x00850000
 213 #define E_MIPS_MACH_4120        0x00870000
 214 #define E_MIPS_MACH_4111        0x00880000
 215 #define E_MIPS_MACH_SB1         0x008a0000
 216 #define E_MIPS_MACH_5400        0x00910000
 217 #define E_MIPS_MACH_5500        0x00980000
 218 #define E_MIPS_MACH_9000        0x00990000
 219 \f
 220 /* Processor specific section indices.  These sections do not actually
 221    exist.  Symbols with a st_shndx field corresponding to one of these
 222    values have a special meaning.  */
 223
 224 /* Defined and allocated common symbol.  Value is virtual address.  If
 225    relocated, alignment must be preserved.  */
 226 #define SHN_MIPS_ACOMMON        0xff00
 227
 228 /* Defined and allocated text symbol.  Value is virtual address.
 229    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 230 #define SHN_MIPS_TEXT           0xff01
 231
 232 /* Defined and allocated data symbol.  Value is virtual address.
 233    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 234 #define SHN_MIPS_DATA           0xff02
 235
 236 /* Small common symbol.  */
 237 #define SHN_MIPS_SCOMMON        0xff03
 238
 239 /* Small undefined symbol.  */
 240 #define SHN_MIPS_SUNDEFINED     0xff04
 241 \f
 242 /* Processor specific section types.  */
 243
 244 /* Section contains the set of dynamic shared objects used when
 245    statically linking.  */
 246 #define SHT_MIPS_LIBLIST        0x70000000
 247
 248 /* I'm not sure what this is, but it's used on Irix 5.  */
 249 #define SHT_MIPS_MSYM           0x70000001
 250
 251 /* Section contains list of symbols whose definitions conflict with
 252    symbols defined in shared objects.  */
 253 #define SHT_MIPS_CONFLICT       0x70000002
 254
 255 /* Section contains the global pointer table.  */
 256 #define SHT_MIPS_GPTAB          0x70000003
 257
 258 /* Section contains microcode information.  The exact format is
 259    unspecified.  */
 260 #define SHT_MIPS_UCODE          0x70000004
 261
 262 /* Section contains some sort of debugging information.  The exact
 263    format is unspecified.  It's probably ECOFF symbols.  */
 264 #define SHT_MIPS_DEBUG          0x70000005
 265
 266 /* Section contains register usage information.  */
 267 #define SHT_MIPS_REGINFO        0x70000006
 268
 269 /* ??? */
 270 #define SHT_MIPS_PACKAGE        0x70000007
 271
 272 /* ??? */
 273 #define SHT_MIPS_PACKSYM        0x70000008
 274
 275 /* ??? */
 276 #define SHT_MIPS_RELD           0x70000009
 277
 278 /* Section contains interface information.  */
 279 #define SHT_MIPS_IFACE          0x7000000b
 280
 281 /* Section contains description of contents of another section.  */
 282 #define SHT_MIPS_CONTENT        0x7000000c
 283
 284 /* Section contains miscellaneous options.  */
 285 #define SHT_MIPS_OPTIONS        0x7000000d
 286
 287 /* ??? */
 288 #define SHT_MIPS_SHDR           0x70000010
 289
 290 /* ??? */
 291 #define SHT_MIPS_FDESC          0x70000011
 292
 293 /* ??? */
 294 #define SHT_MIPS_EXTSYM         0x70000012
 295
 296 /* ??? */
 297 #define SHT_MIPS_DENSE          0x70000013
 298
 299 /* ??? */
 300 #define SHT_MIPS_PDESC          0x70000014
 301
 302 /* ??? */
 303 #define SHT_MIPS_LOCSYM         0x70000015
 304
 305 /* ??? */
 306 #define SHT_MIPS_AUXSYM         0x70000016
 307
 308 /* ??? */
 309 #define SHT_MIPS_OPTSYM         0x70000017
 310
 311 /* ??? */
 312 #define SHT_MIPS_LOCSTR         0x70000018
 313
 314 /* ??? */
 315 #define SHT_MIPS_LINE           0x70000019
 316
 317 /* ??? */
 318 #define SHT_MIPS_RFDESC         0x7000001a
 319
 320 /* Delta C++: symbol table */
 321 #define SHT_MIPS_DELTASYM       0x7000001b
 322
 323 /* Delta C++: instance table */
 324 #define SHT_MIPS_DELTAINST      0x7000001c
 325
 326 /* Delta C++: class table */
 327 #define SHT_MIPS_DELTACLASS     0x7000001d
 328
 329 /* DWARF debugging section.  */
 330 #define SHT_MIPS_DWARF          0x7000001e
 331
 332 /* Delta C++: declarations */
 333 #define SHT_MIPS_DELTADECL      0x7000001f
 334
 335 /* List of libraries the binary depends on.  Includes a time stamp, version
 336    number.  */
 337 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 338
 339 /* Events section.  */
 340 #define SHT_MIPS_EVENTS         0x70000021
 341
 342 /* ??? */
 343 #define SHT_MIPS_TRANSLATE      0x70000022
 344
 345 /* Special pixie sections */
 346 #define SHT_MIPS_PIXIE          0x70000023
 347
 348 /* Address translation table (for debug info) */
 349 #define SHT_MIPS_XLATE          0x70000024
 350
 351 /* SGI internal address translation table (for debug info) */
 352 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 353
 354 /* Intermediate code */
 355 #define SHT_MIPS_WHIRL          0x70000026
 356
 357 /* C++ exception handling region info */
 358 #define SHT_MIPS_EH_REGION      0x70000027
 359
 360 /* Obsolete address translation table (for debug info) */
 361 #define SHT_MIPS_XLATE_OLD      0x70000028
 362
 363 /* Runtime procedure descriptor table exception information (ucode) ??? */
 364 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 365
 366
 367 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 368    following structure.  The sh_link field is the section index of the
 369    string table.  The sh_info field is the number of entries in the
 370    section.  */
 371 typedef struct
 372 {
 373   /* String table index for name of shared object.  */
 374   unsigned long l_name;
 375   /* Time stamp.  */
 376   unsigned long l_time_stamp;
 377   /* Checksum of symbol names and common sizes.  */
 378   unsigned long l_checksum;
 379   /* String table index for version.  */
 380   unsigned long l_version;
 381   /* Flags.  */
 382   unsigned long l_flags;
 383 } Elf32_Lib;
 384
 385 /* The external version of Elf32_Lib.  */
 386 typedef struct
 387 {
 388   unsigned char l_name[4];
 389   unsigned char l_time_stamp[4];
 390   unsigned char l_checksum[4];
 391   unsigned char l_version[4];
 392   unsigned char l_flags[4];
 393 } Elf32_External_Lib;
 394
 395 /* The l_flags field of an Elf32_Lib structure may contain the
 396    following flags.  */
 397
 398 /* Require an exact match at runtime.  */
 399 #define LL_EXACT_MATCH          0x00000001
 400
 401 /* Ignore version incompatibilities at runtime.  */
 402 #define LL_IGNORE_INT_VER       0x00000002
 403
 404 /* Require matching minor version number.  */
 405 #define LL_REQUIRE_MINOR        0x00000004
 406
 407 /* ??? */
 408 #define LL_EXPORTS              0x00000008
 409
 410 /* Delay loading of this library until really needed.  */
 411 #define LL_DELAY_LOAD           0x00000010
 412
 413 /* ??? Delta C++ stuff ??? */
 414 #define LL_DELTA                0x00000020
 415
 416
 417 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 418    .dynsym section.  Each element has the following type.  */
 419 typedef unsigned long Elf32_Conflict;
 420 typedef unsigned char Elf32_External_Conflict[4];
 421
 422 typedef unsigned long Elf64_Conflict;
 423 typedef unsigned char Elf64_External_Conflict[8];
 424
 425 /* A section of type SHT_MIPS_GPTAB contains information about how
 426    much GP space would be required for different -G arguments.  This
 427    information is only used so that the linker can provide informative
 428    suggestions as to the best -G value to use.  The sh_info field is
 429    the index of the section for which this information applies.  The
 430    contents of the section are an array of the following union.  The
 431    first element uses the gt_header field.  The remaining elements use
 432    the gt_entry field.  */
 433 typedef union
 434 {
 435   struct
 436     {
 437       /* -G value actually used for this object file.  */
 438       unsigned long gt_current_g_value;
 439       /* Unused.  */
 440       unsigned long gt_unused;
 441     } gt_header;
 442   struct
 443     {
 444       /* If this -G argument has been used...  */
 445       unsigned long gt_g_value;
 446       /* ...this many GP section bytes would be required.  */
 447       unsigned long gt_bytes;
 448     } gt_entry;
 449 } Elf32_gptab;
 450
 451 /* The external version of Elf32_gptab.  */
 452
 453 typedef union
 454 {
 455   struct
 456     {
 457       unsigned char gt_current_g_value[4];
 458       unsigned char gt_unused[4];
 459     } gt_header;
 460   struct
 461     {
 462       unsigned char gt_g_value[4];
 463       unsigned char gt_bytes[4];
 464     } gt_entry;
 465 } Elf32_External_gptab;
 466
 467 /* A section of type SHT_MIPS_REGINFO contains the following
 468    structure.  */
 469 typedef struct
 470 {
 471   /* Mask of general purpose registers used.  */
 472   unsigned long ri_gprmask;
 473   /* Mask of co-processor registers used.  */
 474   unsigned long ri_cprmask[4];
 475   /* GP register value for this object file.  */
 476   long ri_gp_value;
 477 } Elf32_RegInfo;
 478
 479 /* The external version of the Elf_RegInfo structure.  */
 480 typedef struct
 481 {
 482   unsigned char ri_gprmask[4];
 483   unsigned char ri_cprmask[4][4];
 484   unsigned char ri_gp_value[4];
 485 } Elf32_External_RegInfo;
 486
 487 /* MIPS ELF .reginfo swapping routines.  */
 488 extern void bfd_mips_elf32_swap_reginfo_in
 489   (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
 490 extern void bfd_mips_elf32_swap_reginfo_out
 491   (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
 492 \f
 493 /* Processor specific section flags.  */
 494
 495 /* This section must be in the global data area.  */
 496 #define SHF_MIPS_GPREL          0x10000000
 497
 498 /* This section should be merged.  */
 499 #define SHF_MIPS_MERGE          0x20000000
 500
 501 /* This section contains address data of size implied by section
 502    element size.  */
 503 #define SHF_MIPS_ADDR           0x40000000
 504
 505 /* This section contains string data.  */
 506 #define SHF_MIPS_STRING         0x80000000
 507
 508 /* This section may not be stripped.  */
 509 #define SHF_MIPS_NOSTRIP        0x08000000
 510
 511 /* This section is local to threads.  */
 512 #define SHF_MIPS_LOCAL          0x04000000
 513
 514 /* Linker should generate implicit weak names for this section.  */
 515 #define SHF_MIPS_NAMES          0x02000000
 516
 517 /* Section contais text/data which may be replicated in other sections.
 518    Linker should retain only one copy.  */
 519 #define SHF_MIPS_NODUPES        0x01000000
 520 \f
 521 /* Processor specific program header types.  */
 522
 523 /* Register usage information.  Identifies one .reginfo section.  */
 524 #define PT_MIPS_REGINFO         0x70000000
 525
 526 /* Runtime procedure table.  */
 527 #define PT_MIPS_RTPROC          0x70000001
 528
 529 /* .MIPS.options section.  */
 530 #define PT_MIPS_OPTIONS         0x70000002
 531 \f
 532 /* Processor specific dynamic array tags.  */
 533
 534 /* 32 bit version number for runtime linker interface.  */
 535 #define DT_MIPS_RLD_VERSION     0x70000001
 536
 537 /* Time stamp.  */
 538 #define DT_MIPS_TIME_STAMP      0x70000002
 539
 540 /* Checksum of external strings and common sizes.  */
 541 #define DT_MIPS_ICHECKSUM       0x70000003
 542
 543 /* Index of version string in string table.  */
 544 #define DT_MIPS_IVERSION        0x70000004
 545
 546 /* 32 bits of flags.  */
 547 #define DT_MIPS_FLAGS           0x70000005
 548
 549 /* Base address of the segment.  */
 550 #define DT_MIPS_BASE_ADDRESS    0x70000006
 551
 552 /* ??? */
 553 #define DT_MIPS_MSYM            0x70000007
 554
 555 /* Address of .conflict section.  */
 556 #define DT_MIPS_CONFLICT        0x70000008
 557
 558 /* Address of .liblist section.  */
 559 #define DT_MIPS_LIBLIST         0x70000009
 560
 561 /* Number of local global offset table entries.  */
 562 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 563
 564 /* Number of entries in the .conflict section.  */
 565 #define DT_MIPS_CONFLICTNO      0x7000000b
 566
 567 /* Number of entries in the .liblist section.  */
 568 #define DT_MIPS_LIBLISTNO       0x70000010
 569
 570 /* Number of entries in the .dynsym section.  */
 571 #define DT_MIPS_SYMTABNO        0x70000011
 572
 573 /* Index of first external dynamic symbol not referenced locally.  */
 574 #define DT_MIPS_UNREFEXTNO      0x70000012
 575
 576 /* Index of first dynamic symbol in global offset table.  */
 577 #define DT_MIPS_GOTSYM          0x70000013
 578
 579 /* Number of page table entries in global offset table.  */
 580 #define DT_MIPS_HIPAGENO        0x70000014
 581
 582 /* Address of run time loader map, used for debugging.  */
 583 #define DT_MIPS_RLD_MAP         0x70000016
 584
 585 /* Delta C++ class definition.  */
 586 #define DT_MIPS_DELTA_CLASS     0x70000017
 587
 588 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 589 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 590
 591 /* Delta C++ class instances.  */
 592 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 593
 594 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 595 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 596
 597 /* Delta relocations.  */
 598 #define DT_MIPS_DELTA_RELOC     0x7000001b
 599
 600 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 601 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 602
 603 /* Delta symbols that Delta relocations refer to.  */
 604 #define DT_MIPS_DELTA_SYM       0x7000001d
 605
 606 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 607 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 608
 609 /* Delta symbols that hold class declarations.  */
 610 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 611
 612 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 613 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 614
 615 /* Flags indicating information about C++ flavor.  */
 616 #define DT_MIPS_CXX_FLAGS       0x70000022
 617
 618 /* Pixie information (???).  */
 619 #define DT_MIPS_PIXIE_INIT      0x70000023
 620
 621 /* Address of .MIPS.symlib */
 622 #define DT_MIPS_SYMBOL_LIB      0x70000024
 623
 624 /* The GOT index of the first PTE for a segment */
 625 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 626
 627 /* The GOT index of the first PTE for a local symbol */
 628 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 629
 630 /* The GOT index of the first PTE for a hidden symbol */
 631 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 632
 633 /* The GOT index of the first PTE for a protected symbol */
 634 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 635
 636 /* Address of `.MIPS.options'.  */
 637 #define DT_MIPS_OPTIONS         0x70000029
 638
 639 /* Address of `.interface'.  */
 640 #define DT_MIPS_INTERFACE       0x7000002a
 641
 642 /* ??? */
 643 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 644
 645 /* Size of the .interface section.  */
 646 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 647
 648 /* Size of rld_text_resolve function stored in the GOT.  */
 649 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 650
 651 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 652 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 653
 654 /* Size of compact relocation section (O32).  */
 655 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 656
 657 /* GP value for auxiliary GOTs.  */
 658 #define DT_MIPS_GP_VALUE        0x70000030
 659
 660 /* Address of auxiliary .dynamic.  */
 661 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 662 \f
 663 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 664
 665 /* No flags.  */
 666 #define RHF_NONE                0x00000000
 667
 668 /* Uses shortcut pointers.  */
 669 #define RHF_QUICKSTART          0x00000001
 670
 671 /* Hash size is not a power of two.  */
 672 #define RHF_NOTPOT              0x00000002
 673
 674 /* Ignore LD_LIBRARY_PATH.  */
 675 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
 676
 677 /* DSO address may not be relocated. */
 678 #define RHF_NO_MOVE             0x00000008
 679
 680 /* SGI specific features. */
 681 #define RHF_SGI_ONLY            0x00000010
 682
 683 /* Guarantee that .init will finish executing before any non-init
 684    code in DSO is called. */
 685 #define RHF_GUARANTEE_INIT         0x00000020
 686
 687 /* Contains Delta C++ code. */
 688 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 689
 690 /* Guarantee that .init will start executing before any non-init
 691    code in DSO is called. */
 692 #define RHF_GUARANTEE_START_INIT   0x00000080
 693
 694 /* Generated by pixie. */
 695 #define RHF_PIXIE                  0x00000100
 696
 697 /* Delay-load DSO by default. */
 698 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 699
 700 /* Object may be requickstarted */
 701 #define RHF_REQUICKSTART           0x00000400
 702
 703 /* Object has been requickstarted */
 704 #define RHF_REQUICKSTARTED         0x00000800
 705
 706 /* Generated by cord. */
 707 #define RHF_CORD                   0x00001000
 708
 709 /* Object contains no unresolved undef symbols. */
 710 #define RHF_NO_UNRES_UNDEF         0x00002000
 711
 712 /* Symbol table is in a safe order. */
 713 #define RHF_RLD_ORDER_SAFE         0x00004000
 714 \f
 715 /* Special values for the st_other field in the symbol table.  These
 716    are used in an Irix 5 dynamic symbol table.  */
 717
 718 #define STO_DEFAULT             STV_DEFAULT
 719 #define STO_INTERNAL            STV_INTERNAL
 720 #define STO_HIDDEN              STV_HIDDEN
 721 #define STO_PROTECTED           STV_PROTECTED
 722
 723 /* This value is used for a mips16 .text symbol.  */
 724 #define STO_MIPS16              0xf0
 725
 726 /* This bit is used on Irix to indicate a symbol whose definition
 727    is optional - if, at final link time, it cannot be found, no
 728    error message should be produced.  */
 729 #define STO_OPTIONAL            (1 << 2)
 730 /* A macro to examine the STO_OPTIONAL bit.  */
 731 #define ELF_MIPS_IS_OPTIONAL(other)     ((other) & STO_OPTIONAL)
 732 \f
 733 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 734    relocation entry specifies up to three actual relocations, all at
 735    the same address.  The first relocation which required a symbol
 736    uses the symbol in the r_sym field.  The second relocation which
 737    requires a symbol uses the symbol in the r_ssym field.  If all
 738    three relocations require a symbol, the third one uses a zero
 739    value.  */
 740
 741 /* An entry in a 64 bit SHT_REL section.  */
 742
 743 typedef struct
 744 {
 745   /* Address of relocation.  */
 746   unsigned char r_offset[8];
 747   /* Symbol index.  */
 748   unsigned char r_sym[4];
 749   /* Special symbol.  */
 750   unsigned char r_ssym[1];
 751   /* Third relocation.  */
 752   unsigned char r_type3[1];
 753   /* Second relocation.  */
 754   unsigned char r_type2[1];
 755   /* First relocation.  */
 756   unsigned char r_type[1];
 757 } Elf64_Mips_External_Rel;
 758
 759 typedef struct
 760 {
 761   /* Address of relocation.  */
 762   bfd_vma r_offset;
 763   /* Symbol index.  */
 764   unsigned long r_sym;
 765   /* Special symbol.  */
 766   unsigned char r_ssym;
 767   /* Third relocation.  */
 768   unsigned char r_type3;
 769   /* Second relocation.  */
 770   unsigned char r_type2;
 771   /* First relocation.  */
 772   unsigned char r_type;
 773 } Elf64_Mips_Internal_Rel;
 774
 775 /* An entry in a 64 bit SHT_RELA section.  */
 776
 777 typedef struct
 778 {
 779   /* Address of relocation.  */
 780   unsigned char r_offset[8];
 781   /* Symbol index.  */
 782   unsigned char r_sym[4];
 783   /* Special symbol.  */
 784   unsigned char r_ssym[1];
 785   /* Third relocation.  */
 786   unsigned char r_type3[1];
 787   /* Second relocation.  */
 788   unsigned char r_type2[1];
 789   /* First relocation.  */
 790   unsigned char r_type[1];
 791   /* Addend.  */
 792   unsigned char r_addend[8];
 793 } Elf64_Mips_External_Rela;
 794
 795 typedef struct
 796 {
 797   /* Address of relocation.  */
 798   bfd_vma r_offset;
 799   /* Symbol index.  */
 800   unsigned long r_sym;
 801   /* Special symbol.  */
 802   unsigned char r_ssym;
 803   /* Third relocation.  */
 804   unsigned char r_type3;
 805   /* Second relocation.  */
 806   unsigned char r_type2;
 807   /* First relocation.  */
 808   unsigned char r_type;
 809   /* Addend.  */
 810   bfd_signed_vma r_addend;
 811 } Elf64_Mips_Internal_Rela;
 812
 813 /* MIPS ELF 64 relocation info access macros.  */
 814 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
 815 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
 816 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
 817 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
 818
 819 /* Values found in the r_ssym field of a relocation entry.  */
 820
 821 /* No relocation.  */
 822 #define RSS_UNDEF       0
 823
 824 /* Value of GP.  */
 825 #define RSS_GP          1
 826
 827 /* Value of GP in object being relocated.  */
 828 #define RSS_GP0         2
 829
 830 /* Address of location being relocated.  */
 831 #define RSS_LOC         3
 832 \f
 833 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 834    which starts with this header.  */
 835
 836 typedef struct
 837 {
 838   /* Type of option.  */
 839   unsigned char kind[1];
 840   /* Size of option descriptor, including header.  */
 841   unsigned char size[1];
 842   /* Section index of affected section, or 0 for global option.  */
 843   unsigned char section[2];
 844   /* Information specific to this kind of option.  */
 845   unsigned char info[4];
 846 } Elf_External_Options;
 847
 848 typedef struct
 849 {
 850   /* Type of option.  */
 851   unsigned char kind;
 852   /* Size of option descriptor, including header.  */
 853   unsigned char size;
 854   /* Section index of affected section, or 0 for global option.  */
 855   unsigned short section;
 856   /* Information specific to this kind of option.  */
 857   unsigned long info;
 858 } Elf_Internal_Options;
 859
 860 /* MIPS ELF option header swapping routines.  */
 861 extern void bfd_mips_elf_swap_options_in
 862   (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
 863 extern void bfd_mips_elf_swap_options_out
 864   (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
 865
 866 /* Values which may appear in the kind field of an Elf_Options
 867    structure.  */
 868
 869 /* Undefined.  */
 870 #define ODK_NULL        0
 871
 872 /* Register usage and GP value.  */
 873 #define ODK_REGINFO     1
 874
 875 /* Exception processing information.  */
 876 #define ODK_EXCEPTIONS  2
 877
 878 /* Section padding information.  */
 879 #define ODK_PAD         3
 880
 881 /* Hardware workarounds performed.  */
 882 #define ODK_HWPATCH     4
 883
 884 /* Fill value used by the linker.  */
 885 #define ODK_FILL        5
 886
 887 /* Reserved space for desktop tools.  */
 888 #define ODK_TAGS        6
 889
 890 /* Hardware workarounds, AND bits when merging.  */
 891 #define ODK_HWAND       7
 892
 893 /* Hardware workarounds, OR bits when merging.  */
 894 #define ODK_HWOR        8
 895
 896 /* GP group to use for text/data sections.  */
 897 #define ODK_GP_GROUP    9
 898
 899 /* ID information.  */
 900 #define ODK_IDENT       10
 901
 902 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
 903    structure.  In the 64 bit ABI, it is the following structure.  The
 904    info field of the options header is not used.  */
 905
 906 typedef struct
 907 {
 908   /* Mask of general purpose registers used.  */
 909   unsigned char ri_gprmask[4];
 910   /* Padding.  */
 911   unsigned char ri_pad[4];
 912   /* Mask of co-processor registers used.  */
 913   unsigned char ri_cprmask[4][4];
 914   /* GP register value for this object file.  */
 915   unsigned char ri_gp_value[8];
 916 } Elf64_External_RegInfo;
 917
 918 typedef struct
 919 {
 920   /* Mask of general purpose registers used.  */
 921   unsigned long ri_gprmask;
 922   /* Padding.  */
 923   unsigned long ri_pad;
 924   /* Mask of co-processor registers used.  */
 925   unsigned long ri_cprmask[4];
 926   /* GP register value for this object file.  */
 927   bfd_vma ri_gp_value;
 928 } Elf64_Internal_RegInfo;
 929
 930 typedef struct
 931 {
 932   /* The hash value computed from the name of the corresponding
 933      dynamic symbol.  */
 934   unsigned char ms_hash_value[4];
 935   /* Contains both the dynamic relocation index and the symbol flags
 936      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 937      to access the individual values.  The dynamic relocation index
 938      identifies the first entry in the .rel.dyn section that
 939      references the dynamic symbol corresponding to this msym entry.
 940      If the index is 0, no dynamic relocations are associated with the
 941      symbol.  The symbol flags field is reserved for future use.  */
 942   unsigned char ms_info[4];
 943 } Elf32_External_Msym;
 944
 945 typedef struct
 946 {
 947   /* The hash value computed from the name of the corresponding
 948      dynamic symbol.  */
 949   unsigned long ms_hash_value;
 950   /* Contains both the dynamic relocation index and the symbol flags
 951      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 952      to access the individual values.  The dynamic relocation index
 953      identifies the first entry in the .rel.dyn section that
 954      references the dynamic symbol corresponding to this msym entry.
 955      If the index is 0, no dynamic relocations are associated with the
 956      symbol.  The symbol flags field is reserved for future use.  */
 957   unsigned long ms_info;
 958 } Elf32_Internal_Msym;
 959
 960 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
 961 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
 962 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
 963
 964 /* MIPS ELF reginfo swapping routines.  */
 965 extern void bfd_mips_elf64_swap_reginfo_in
 966   (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
 967 extern void bfd_mips_elf64_swap_reginfo_out
 968   (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
 969
 970 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
 971 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
 972 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
 973 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
 974 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
 975 #define OEX_FPDBUG      0x40000 /* Force precise floating-point
 976                                    exceptions (debug mode).  */
 977 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
 978
 979 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
 980 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
 981 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
 982 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
 983 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
 984 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
 985
 986 /* Masks for the info word of an ODK_PAD descriptor.  */
 987 #define OPAD_PREFIX     0x01
 988 #define OPAD_POSTFIX    0x02
 989 #define OPAD_SYMBOL     0x04
 990
 991 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
 992 #define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
 993 #define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
 994 #define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
 995 #define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
 996                                            (clean == 1).  */
 997 #define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
 998                                            load patch. */
 999
1000 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
1001 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
1002 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
1003
1004 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
1005 #define OHWA0_R4KEOP_CHECKED    0x00000001
1006 #define OHWA0_R4KEOP_CLEAN      0x00000002
1007 \f
1008
1009 #endif /* _ELF_MIPS_H */