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, 2008
   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_OCTEON      0x008b0000
 217 #define E_MIPS_MACH_5400        0x00910000
 218 #define E_MIPS_MACH_5500        0x00980000
 219 #define E_MIPS_MACH_9000        0x00990000
 220 #define E_MIPS_MACH_LS2E        0x00A00000
 221 #define E_MIPS_MACH_LS2F        0x00A10000
 222 \f
 223 /* Processor specific section indices.  These sections do not actually
 224    exist.  Symbols with a st_shndx field corresponding to one of these
 225    values have a special meaning.  */
 226
 227 /* Defined and allocated common symbol.  Value is virtual address.  If
 228    relocated, alignment must be preserved.  */
 229 #define SHN_MIPS_ACOMMON        SHN_LORESERVE
 230
 231 /* Defined and allocated text symbol.  Value is virtual address.
 232    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 233 #define SHN_MIPS_TEXT           (SHN_LORESERVE + 1)
 234
 235 /* Defined and allocated data symbol.  Value is virtual address.
 236    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 237 #define SHN_MIPS_DATA           (SHN_LORESERVE + 2)
 238
 239 /* Small common symbol.  */
 240 #define SHN_MIPS_SCOMMON        (SHN_LORESERVE + 3)
 241
 242 /* Small undefined symbol.  */
 243 #define SHN_MIPS_SUNDEFINED     (SHN_LORESERVE + 4)
 244 \f
 245 /* Processor specific section types.  */
 246
 247 /* Section contains the set of dynamic shared objects used when
 248    statically linking.  */
 249 #define SHT_MIPS_LIBLIST        0x70000000
 250
 251 /* I'm not sure what this is, but it's used on Irix 5.  */
 252 #define SHT_MIPS_MSYM           0x70000001
 253
 254 /* Section contains list of symbols whose definitions conflict with
 255    symbols defined in shared objects.  */
 256 #define SHT_MIPS_CONFLICT       0x70000002
 257
 258 /* Section contains the global pointer table.  */
 259 #define SHT_MIPS_GPTAB          0x70000003
 260
 261 /* Section contains microcode information.  The exact format is
 262    unspecified.  */
 263 #define SHT_MIPS_UCODE          0x70000004
 264
 265 /* Section contains some sort of debugging information.  The exact
 266    format is unspecified.  It's probably ECOFF symbols.  */
 267 #define SHT_MIPS_DEBUG          0x70000005
 268
 269 /* Section contains register usage information.  */
 270 #define SHT_MIPS_REGINFO        0x70000006
 271
 272 /* ??? */
 273 #define SHT_MIPS_PACKAGE        0x70000007
 274
 275 /* ??? */
 276 #define SHT_MIPS_PACKSYM        0x70000008
 277
 278 /* ??? */
 279 #define SHT_MIPS_RELD           0x70000009
 280
 281 /* Section contains interface information.  */
 282 #define SHT_MIPS_IFACE          0x7000000b
 283
 284 /* Section contains description of contents of another section.  */
 285 #define SHT_MIPS_CONTENT        0x7000000c
 286
 287 /* Section contains miscellaneous options.  */
 288 #define SHT_MIPS_OPTIONS        0x7000000d
 289
 290 /* ??? */
 291 #define SHT_MIPS_SHDR           0x70000010
 292
 293 /* ??? */
 294 #define SHT_MIPS_FDESC          0x70000011
 295
 296 /* ??? */
 297 #define SHT_MIPS_EXTSYM         0x70000012
 298
 299 /* ??? */
 300 #define SHT_MIPS_DENSE          0x70000013
 301
 302 /* ??? */
 303 #define SHT_MIPS_PDESC          0x70000014
 304
 305 /* ??? */
 306 #define SHT_MIPS_LOCSYM         0x70000015
 307
 308 /* ??? */
 309 #define SHT_MIPS_AUXSYM         0x70000016
 310
 311 /* ??? */
 312 #define SHT_MIPS_OPTSYM         0x70000017
 313
 314 /* ??? */
 315 #define SHT_MIPS_LOCSTR         0x70000018
 316
 317 /* ??? */
 318 #define SHT_MIPS_LINE           0x70000019
 319
 320 /* ??? */
 321 #define SHT_MIPS_RFDESC         0x7000001a
 322
 323 /* Delta C++: symbol table */
 324 #define SHT_MIPS_DELTASYM       0x7000001b
 325
 326 /* Delta C++: instance table */
 327 #define SHT_MIPS_DELTAINST      0x7000001c
 328
 329 /* Delta C++: class table */
 330 #define SHT_MIPS_DELTACLASS     0x7000001d
 331
 332 /* DWARF debugging section.  */
 333 #define SHT_MIPS_DWARF          0x7000001e
 334
 335 /* Delta C++: declarations */
 336 #define SHT_MIPS_DELTADECL      0x7000001f
 337
 338 /* List of libraries the binary depends on.  Includes a time stamp, version
 339    number.  */
 340 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 341
 342 /* Events section.  */
 343 #define SHT_MIPS_EVENTS         0x70000021
 344
 345 /* ??? */
 346 #define SHT_MIPS_TRANSLATE      0x70000022
 347
 348 /* Special pixie sections */
 349 #define SHT_MIPS_PIXIE          0x70000023
 350
 351 /* Address translation table (for debug info) */
 352 #define SHT_MIPS_XLATE          0x70000024
 353
 354 /* SGI internal address translation table (for debug info) */
 355 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 356
 357 /* Intermediate code */
 358 #define SHT_MIPS_WHIRL          0x70000026
 359
 360 /* C++ exception handling region info */
 361 #define SHT_MIPS_EH_REGION      0x70000027
 362
 363 /* Obsolete address translation table (for debug info) */
 364 #define SHT_MIPS_XLATE_OLD      0x70000028
 365
 366 /* Runtime procedure descriptor table exception information (ucode) ??? */
 367 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 368
 369
 370 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 371    following structure.  The sh_link field is the section index of the
 372    string table.  The sh_info field is the number of entries in the
 373    section.  */
 374 typedef struct
 375 {
 376   /* String table index for name of shared object.  */
 377   unsigned long l_name;
 378   /* Time stamp.  */
 379   unsigned long l_time_stamp;
 380   /* Checksum of symbol names and common sizes.  */
 381   unsigned long l_checksum;
 382   /* String table index for version.  */
 383   unsigned long l_version;
 384   /* Flags.  */
 385   unsigned long l_flags;
 386 } Elf32_Lib;
 387
 388 /* The external version of Elf32_Lib.  */
 389 typedef struct
 390 {
 391   unsigned char l_name[4];
 392   unsigned char l_time_stamp[4];
 393   unsigned char l_checksum[4];
 394   unsigned char l_version[4];
 395   unsigned char l_flags[4];
 396 } Elf32_External_Lib;
 397
 398 /* The l_flags field of an Elf32_Lib structure may contain the
 399    following flags.  */
 400
 401 /* Require an exact match at runtime.  */
 402 #define LL_EXACT_MATCH          0x00000001
 403
 404 /* Ignore version incompatibilities at runtime.  */
 405 #define LL_IGNORE_INT_VER       0x00000002
 406
 407 /* Require matching minor version number.  */
 408 #define LL_REQUIRE_MINOR        0x00000004
 409
 410 /* ??? */
 411 #define LL_EXPORTS              0x00000008
 412
 413 /* Delay loading of this library until really needed.  */
 414 #define LL_DELAY_LOAD           0x00000010
 415
 416 /* ??? Delta C++ stuff ??? */
 417 #define LL_DELTA                0x00000020
 418
 419
 420 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 421    .dynsym section.  Each element has the following type.  */
 422 typedef unsigned long Elf32_Conflict;
 423 typedef unsigned char Elf32_External_Conflict[4];
 424
 425 typedef unsigned long Elf64_Conflict;
 426 typedef unsigned char Elf64_External_Conflict[8];
 427
 428 /* A section of type SHT_MIPS_GPTAB contains information about how
 429    much GP space would be required for different -G arguments.  This
 430    information is only used so that the linker can provide informative
 431    suggestions as to the best -G value to use.  The sh_info field is
 432    the index of the section for which this information applies.  The
 433    contents of the section are an array of the following union.  The
 434    first element uses the gt_header field.  The remaining elements use
 435    the gt_entry field.  */
 436 typedef union
 437 {
 438   struct
 439     {
 440       /* -G value actually used for this object file.  */
 441       unsigned long gt_current_g_value;
 442       /* Unused.  */
 443       unsigned long gt_unused;
 444     } gt_header;
 445   struct
 446     {
 447       /* If this -G argument has been used...  */
 448       unsigned long gt_g_value;
 449       /* ...this many GP section bytes would be required.  */
 450       unsigned long gt_bytes;
 451     } gt_entry;
 452 } Elf32_gptab;
 453
 454 /* The external version of Elf32_gptab.  */
 455
 456 typedef union
 457 {
 458   struct
 459     {
 460       unsigned char gt_current_g_value[4];
 461       unsigned char gt_unused[4];
 462     } gt_header;
 463   struct
 464     {
 465       unsigned char gt_g_value[4];
 466       unsigned char gt_bytes[4];
 467     } gt_entry;
 468 } Elf32_External_gptab;
 469
 470 /* A section of type SHT_MIPS_REGINFO contains the following
 471    structure.  */
 472 typedef struct
 473 {
 474   /* Mask of general purpose registers used.  */
 475   unsigned long ri_gprmask;
 476   /* Mask of co-processor registers used.  */
 477   unsigned long ri_cprmask[4];
 478   /* GP register value for this object file.  */
 479   long ri_gp_value;
 480 } Elf32_RegInfo;
 481
 482 /* The external version of the Elf_RegInfo structure.  */
 483 typedef struct
 484 {
 485   unsigned char ri_gprmask[4];
 486   unsigned char ri_cprmask[4][4];
 487   unsigned char ri_gp_value[4];
 488 } Elf32_External_RegInfo;
 489
 490 /* MIPS ELF .reginfo swapping routines.  */
 491 extern void bfd_mips_elf32_swap_reginfo_in
 492   (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
 493 extern void bfd_mips_elf32_swap_reginfo_out
 494   (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
 495 \f
 496 /* Processor specific section flags.  */
 497
 498 /* This section must be in the global data area.  */
 499 #define SHF_MIPS_GPREL          0x10000000
 500
 501 /* This section should be merged.  */
 502 #define SHF_MIPS_MERGE          0x20000000
 503
 504 /* This section contains address data of size implied by section
 505    element size.  */
 506 #define SHF_MIPS_ADDR           0x40000000
 507
 508 /* This section contains string data.  */
 509 #define SHF_MIPS_STRING         0x80000000
 510
 511 /* This section may not be stripped.  */
 512 #define SHF_MIPS_NOSTRIP        0x08000000
 513
 514 /* This section is local to threads.  */
 515 #define SHF_MIPS_LOCAL          0x04000000
 516
 517 /* Linker should generate implicit weak names for this section.  */
 518 #define SHF_MIPS_NAMES          0x02000000
 519
 520 /* Section contais text/data which may be replicated in other sections.
 521    Linker should retain only one copy.  */
 522 #define SHF_MIPS_NODUPES        0x01000000
 523 \f
 524 /* Processor specific program header types.  */
 525
 526 /* Register usage information.  Identifies one .reginfo section.  */
 527 #define PT_MIPS_REGINFO         0x70000000
 528
 529 /* Runtime procedure table.  */
 530 #define PT_MIPS_RTPROC          0x70000001
 531
 532 /* .MIPS.options section.  */
 533 #define PT_MIPS_OPTIONS         0x70000002
 534 \f
 535 /* Processor specific dynamic array tags.  */
 536
 537 /* 32 bit version number for runtime linker interface.  */
 538 #define DT_MIPS_RLD_VERSION     0x70000001
 539
 540 /* Time stamp.  */
 541 #define DT_MIPS_TIME_STAMP      0x70000002
 542
 543 /* Checksum of external strings and common sizes.  */
 544 #define DT_MIPS_ICHECKSUM       0x70000003
 545
 546 /* Index of version string in string table.  */
 547 #define DT_MIPS_IVERSION        0x70000004
 548
 549 /* 32 bits of flags.  */
 550 #define DT_MIPS_FLAGS           0x70000005
 551
 552 /* Base address of the segment.  */
 553 #define DT_MIPS_BASE_ADDRESS    0x70000006
 554
 555 /* ??? */
 556 #define DT_MIPS_MSYM            0x70000007
 557
 558 /* Address of .conflict section.  */
 559 #define DT_MIPS_CONFLICT        0x70000008
 560
 561 /* Address of .liblist section.  */
 562 #define DT_MIPS_LIBLIST         0x70000009
 563
 564 /* Number of local global offset table entries.  */
 565 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 566
 567 /* Number of entries in the .conflict section.  */
 568 #define DT_MIPS_CONFLICTNO      0x7000000b
 569
 570 /* Number of entries in the .liblist section.  */
 571 #define DT_MIPS_LIBLISTNO       0x70000010
 572
 573 /* Number of entries in the .dynsym section.  */
 574 #define DT_MIPS_SYMTABNO        0x70000011
 575
 576 /* Index of first external dynamic symbol not referenced locally.  */
 577 #define DT_MIPS_UNREFEXTNO      0x70000012
 578
 579 /* Index of first dynamic symbol in global offset table.  */
 580 #define DT_MIPS_GOTSYM          0x70000013
 581
 582 /* Number of page table entries in global offset table.  */
 583 #define DT_MIPS_HIPAGENO        0x70000014
 584
 585 /* Address of run time loader map, used for debugging.  */
 586 #define DT_MIPS_RLD_MAP         0x70000016
 587
 588 /* Delta C++ class definition.  */
 589 #define DT_MIPS_DELTA_CLASS     0x70000017
 590
 591 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 592 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 593
 594 /* Delta C++ class instances.  */
 595 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 596
 597 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 598 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 599
 600 /* Delta relocations.  */
 601 #define DT_MIPS_DELTA_RELOC     0x7000001b
 602
 603 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 604 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 605
 606 /* Delta symbols that Delta relocations refer to.  */
 607 #define DT_MIPS_DELTA_SYM       0x7000001d
 608
 609 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 610 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 611
 612 /* Delta symbols that hold class declarations.  */
 613 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 614
 615 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 616 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 617
 618 /* Flags indicating information about C++ flavor.  */
 619 #define DT_MIPS_CXX_FLAGS       0x70000022
 620
 621 /* Pixie information (???).  */
 622 #define DT_MIPS_PIXIE_INIT      0x70000023
 623
 624 /* Address of .MIPS.symlib */
 625 #define DT_MIPS_SYMBOL_LIB      0x70000024
 626
 627 /* The GOT index of the first PTE for a segment */
 628 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 629
 630 /* The GOT index of the first PTE for a local symbol */
 631 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 632
 633 /* The GOT index of the first PTE for a hidden symbol */
 634 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 635
 636 /* The GOT index of the first PTE for a protected symbol */
 637 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 638
 639 /* Address of `.MIPS.options'.  */
 640 #define DT_MIPS_OPTIONS         0x70000029
 641
 642 /* Address of `.interface'.  */
 643 #define DT_MIPS_INTERFACE       0x7000002a
 644
 645 /* ??? */
 646 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 647
 648 /* Size of the .interface section.  */
 649 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 650
 651 /* Size of rld_text_resolve function stored in the GOT.  */
 652 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 653
 654 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 655 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 656
 657 /* Size of compact relocation section (O32).  */
 658 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 659
 660 /* GP value for auxiliary GOTs.  */
 661 #define DT_MIPS_GP_VALUE        0x70000030
 662
 663 /* Address of auxiliary .dynamic.  */
 664 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 665
 666 /* Address of the base of the PLTGOT.  */
 667 #define DT_MIPS_PLTGOT         0x70000032
 668
 669 /* Points to the base of a writable PLT.  */
 670 #define DT_MIPS_RWPLT          0x70000034
 671 \f
 672 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 673
 674 /* No flags.  */
 675 #define RHF_NONE                0x00000000
 676
 677 /* Uses shortcut pointers.  */
 678 #define RHF_QUICKSTART          0x00000001
 679
 680 /* Hash size is not a power of two.  */
 681 #define RHF_NOTPOT              0x00000002
 682
 683 /* Ignore LD_LIBRARY_PATH.  */
 684 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
 685
 686 /* DSO address may not be relocated. */
 687 #define RHF_NO_MOVE             0x00000008
 688
 689 /* SGI specific features. */
 690 #define RHF_SGI_ONLY            0x00000010
 691
 692 /* Guarantee that .init will finish executing before any non-init
 693    code in DSO is called. */
 694 #define RHF_GUARANTEE_INIT         0x00000020
 695
 696 /* Contains Delta C++ code. */
 697 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 698
 699 /* Guarantee that .init will start executing before any non-init
 700    code in DSO is called. */
 701 #define RHF_GUARANTEE_START_INIT   0x00000080
 702
 703 /* Generated by pixie. */
 704 #define RHF_PIXIE                  0x00000100
 705
 706 /* Delay-load DSO by default. */
 707 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 708
 709 /* Object may be requickstarted */
 710 #define RHF_REQUICKSTART           0x00000400
 711
 712 /* Object has been requickstarted */
 713 #define RHF_REQUICKSTARTED         0x00000800
 714
 715 /* Generated by cord. */
 716 #define RHF_CORD                   0x00001000
 717
 718 /* Object contains no unresolved undef symbols. */
 719 #define RHF_NO_UNRES_UNDEF         0x00002000
 720
 721 /* Symbol table is in a safe order. */
 722 #define RHF_RLD_ORDER_SAFE         0x00004000
 723 \f
 724 /* Special values for the st_other field in the symbol table.  These
 725    are used in an Irix 5 dynamic symbol table.  */
 726
 727 #define STO_DEFAULT             STV_DEFAULT
 728 #define STO_INTERNAL            STV_INTERNAL
 729 #define STO_HIDDEN              STV_HIDDEN
 730 #define STO_PROTECTED           STV_PROTECTED
 731
 732 /* The MIPS psABI was updated in 2008 with support for PLTs and copy
 733    relocs.  There are therefore two types of nonzero SHN_UNDEF functions:
 734    PLT entries and traditional MIPS lazy binding stubs.  We mark the former
 735    with STO_MIPS_PLT to distinguish them from the latter.  */
 736 #define STO_MIPS_PLT            0x8
 737
 738 /* This value is used to mark PIC functions in an object that mixes
 739    PIC and non-PIC.  */
 740 #define STO_MIPS_PIC            0x20
 741 #define ELF_ST_IS_MIPS_PIC(OTHER) \
 742   (((OTHER) & ~ELF_ST_VISIBILITY (-1)) == STO_MIPS_PIC)
 743 #define ELF_ST_SET_MIPS_PIC(OTHER) \
 744   (STO_MIPS_PIC | ELF_ST_VISIBILITY (OTHER))
 745
 746 /* This value is used for a mips16 .text symbol.  */
 747 #define STO_MIPS16              0xf0
 748 #define ELF_ST_IS_MIPS16(OTHER) (((OTHER) & 0xf0) == STO_MIPS16)
 749 #define ELF_ST_SET_MIPS16(OTHER) (((OTHER) & ~0xf0) | STO_MIPS16)
 750
 751 /* This bit is used on Irix to indicate a symbol whose definition
 752    is optional - if, at final link time, it cannot be found, no
 753    error message should be produced.  */
 754 #define STO_OPTIONAL            (1 << 2)
 755 /* A macro to examine the STO_OPTIONAL bit.  */
 756 #define ELF_MIPS_IS_OPTIONAL(other)     ((other) & STO_OPTIONAL)
 757 \f
 758 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 759    relocation entry specifies up to three actual relocations, all at
 760    the same address.  The first relocation which required a symbol
 761    uses the symbol in the r_sym field.  The second relocation which
 762    requires a symbol uses the symbol in the r_ssym field.  If all
 763    three relocations require a symbol, the third one uses a zero
 764    value.  */
 765
 766 /* An entry in a 64 bit SHT_REL section.  */
 767
 768 typedef struct
 769 {
 770   /* Address of relocation.  */
 771   unsigned char r_offset[8];
 772   /* Symbol index.  */
 773   unsigned char r_sym[4];
 774   /* Special symbol.  */
 775   unsigned char r_ssym[1];
 776   /* Third relocation.  */
 777   unsigned char r_type3[1];
 778   /* Second relocation.  */
 779   unsigned char r_type2[1];
 780   /* First relocation.  */
 781   unsigned char r_type[1];
 782 } Elf64_Mips_External_Rel;
 783
 784 typedef struct
 785 {
 786   /* Address of relocation.  */
 787   bfd_vma r_offset;
 788   /* Symbol index.  */
 789   unsigned long r_sym;
 790   /* Special symbol.  */
 791   unsigned char r_ssym;
 792   /* Third relocation.  */
 793   unsigned char r_type3;
 794   /* Second relocation.  */
 795   unsigned char r_type2;
 796   /* First relocation.  */
 797   unsigned char r_type;
 798 } Elf64_Mips_Internal_Rel;
 799
 800 /* An entry in a 64 bit SHT_RELA section.  */
 801
 802 typedef struct
 803 {
 804   /* Address of relocation.  */
 805   unsigned char r_offset[8];
 806   /* Symbol index.  */
 807   unsigned char r_sym[4];
 808   /* Special symbol.  */
 809   unsigned char r_ssym[1];
 810   /* Third relocation.  */
 811   unsigned char r_type3[1];
 812   /* Second relocation.  */
 813   unsigned char r_type2[1];
 814   /* First relocation.  */
 815   unsigned char r_type[1];
 816   /* Addend.  */
 817   unsigned char r_addend[8];
 818 } Elf64_Mips_External_Rela;
 819
 820 typedef struct
 821 {
 822   /* Address of relocation.  */
 823   bfd_vma r_offset;
 824   /* Symbol index.  */
 825   unsigned long r_sym;
 826   /* Special symbol.  */
 827   unsigned char r_ssym;
 828   /* Third relocation.  */
 829   unsigned char r_type3;
 830   /* Second relocation.  */
 831   unsigned char r_type2;
 832   /* First relocation.  */
 833   unsigned char r_type;
 834   /* Addend.  */
 835   bfd_signed_vma r_addend;
 836 } Elf64_Mips_Internal_Rela;
 837
 838 /* MIPS ELF 64 relocation info access macros.  */
 839 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
 840 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
 841 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
 842 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
 843
 844 /* Values found in the r_ssym field of a relocation entry.  */
 845
 846 /* No relocation.  */
 847 #define RSS_UNDEF       0
 848
 849 /* Value of GP.  */
 850 #define RSS_GP          1
 851
 852 /* Value of GP in object being relocated.  */
 853 #define RSS_GP0         2
 854
 855 /* Address of location being relocated.  */
 856 #define RSS_LOC         3
 857 \f
 858 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 859    which starts with this header.  */
 860
 861 typedef struct
 862 {
 863   /* Type of option.  */
 864   unsigned char kind[1];
 865   /* Size of option descriptor, including header.  */
 866   unsigned char size[1];
 867   /* Section index of affected section, or 0 for global option.  */
 868   unsigned char section[2];
 869   /* Information specific to this kind of option.  */
 870   unsigned char info[4];
 871 } Elf_External_Options;
 872
 873 typedef struct
 874 {
 875   /* Type of option.  */
 876   unsigned char kind;
 877   /* Size of option descriptor, including header.  */
 878   unsigned char size;
 879   /* Section index of affected section, or 0 for global option.  */
 880   unsigned short section;
 881   /* Information specific to this kind of option.  */
 882   unsigned long info;
 883 } Elf_Internal_Options;
 884
 885 /* MIPS ELF option header swapping routines.  */
 886 extern void bfd_mips_elf_swap_options_in
 887   (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
 888 extern void bfd_mips_elf_swap_options_out
 889   (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
 890
 891 /* Values which may appear in the kind field of an Elf_Options
 892    structure.  */
 893
 894 /* Undefined.  */
 895 #define ODK_NULL        0
 896
 897 /* Register usage and GP value.  */
 898 #define ODK_REGINFO     1
 899
 900 /* Exception processing information.  */
 901 #define ODK_EXCEPTIONS  2
 902
 903 /* Section padding information.  */
 904 #define ODK_PAD         3
 905
 906 /* Hardware workarounds performed.  */
 907 #define ODK_HWPATCH     4
 908
 909 /* Fill value used by the linker.  */
 910 #define ODK_FILL        5
 911
 912 /* Reserved space for desktop tools.  */
 913 #define ODK_TAGS        6
 914
 915 /* Hardware workarounds, AND bits when merging.  */
 916 #define ODK_HWAND       7
 917
 918 /* Hardware workarounds, OR bits when merging.  */
 919 #define ODK_HWOR        8
 920
 921 /* GP group to use for text/data sections.  */
 922 #define ODK_GP_GROUP    9
 923
 924 /* ID information.  */
 925 #define ODK_IDENT       10
 926
 927 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
 928    structure.  In the 64 bit ABI, it is the following structure.  The
 929    info field of the options header is not used.  */
 930
 931 typedef struct
 932 {
 933   /* Mask of general purpose registers used.  */
 934   unsigned char ri_gprmask[4];
 935   /* Padding.  */
 936   unsigned char ri_pad[4];
 937   /* Mask of co-processor registers used.  */
 938   unsigned char ri_cprmask[4][4];
 939   /* GP register value for this object file.  */
 940   unsigned char ri_gp_value[8];
 941 } Elf64_External_RegInfo;
 942
 943 typedef struct
 944 {
 945   /* Mask of general purpose registers used.  */
 946   unsigned long ri_gprmask;
 947   /* Padding.  */
 948   unsigned long ri_pad;
 949   /* Mask of co-processor registers used.  */
 950   unsigned long ri_cprmask[4];
 951   /* GP register value for this object file.  */
 952   bfd_vma ri_gp_value;
 953 } Elf64_Internal_RegInfo;
 954
 955 typedef struct
 956 {
 957   /* The hash value computed from the name of the corresponding
 958      dynamic symbol.  */
 959   unsigned char ms_hash_value[4];
 960   /* Contains both the dynamic relocation index and the symbol flags
 961      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 962      to access the individual values.  The dynamic relocation index
 963      identifies the first entry in the .rel.dyn section that
 964      references the dynamic symbol corresponding to this msym entry.
 965      If the index is 0, no dynamic relocations are associated with the
 966      symbol.  The symbol flags field is reserved for future use.  */
 967   unsigned char ms_info[4];
 968 } Elf32_External_Msym;
 969
 970 typedef struct
 971 {
 972   /* The hash value computed from the name of the corresponding
 973      dynamic symbol.  */
 974   unsigned long ms_hash_value;
 975   /* Contains both the dynamic relocation index and the symbol flags
 976      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 977      to access the individual values.  The dynamic relocation index
 978      identifies the first entry in the .rel.dyn section that
 979      references the dynamic symbol corresponding to this msym entry.
 980      If the index is 0, no dynamic relocations are associated with the
 981      symbol.  The symbol flags field is reserved for future use.  */
 982   unsigned long ms_info;
 983 } Elf32_Internal_Msym;
 984
 985 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
 986 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
 987 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
 988
 989 /* MIPS ELF reginfo swapping routines.  */
 990 extern void bfd_mips_elf64_swap_reginfo_in
 991   (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
 992 extern void bfd_mips_elf64_swap_reginfo_out
 993   (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
 994
 995 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
 996 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
 997 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
 998 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
 999 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
1000 #define OEX_FPDBUG      0x40000 /* Force precise floating-point
1001                                    exceptions (debug mode).  */
1002 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
1003
1004 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
1005 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
1006 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
1007 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
1008 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
1009 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
1010
1011 /* Masks for the info word of an ODK_PAD descriptor.  */
1012 #define OPAD_PREFIX     0x01
1013 #define OPAD_POSTFIX    0x02
1014 #define OPAD_SYMBOL     0x04
1015
1016 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
1017 #define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
1018 #define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
1019 #define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
1020 #define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
1021                                            (clean == 1).  */
1022 #define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
1023                                            load patch. */
1024
1025 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
1026 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
1027 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
1028
1029 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
1030 #define OHWA0_R4KEOP_CHECKED    0x00000001
1031 #define OHWA0_R4KEOP_CLEAN      0x00000002
1032 \f
1033
1034 /* Object attribute tags.  */
1035 enum
1036 {
1037   /* 0-3 are generic.  */
1038   Tag_GNU_MIPS_ABI_FP = 4, /* Value 1 for hard-float -mdouble-float, 2
1039                               for hard-float -msingle-float, 3 for
1040                               soft-float, 4 for -mips32r2 -mfp64; 0 for
1041                               not tagged or not using any ABIs affected
1042                               by the differences.  */
1043 };
1044
1045 #endif /* _ELF_MIPS_H */