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, 2009
   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_XLR         0x008c0000
 218 #define E_MIPS_MACH_OCTEON2     0x008d0000
 219 #define E_MIPS_MACH_5400        0x00910000
 220 #define E_MIPS_MACH_5500        0x00980000
 221 #define E_MIPS_MACH_9000        0x00990000
 222 #define E_MIPS_MACH_LS2E        0x00A00000
 223 #define E_MIPS_MACH_LS2F        0x00A10000
 224 \f
 225 /* Processor specific section indices.  These sections do not actually
 226    exist.  Symbols with a st_shndx field corresponding to one of these
 227    values have a special meaning.  */
 228
 229 /* Defined and allocated common symbol.  Value is virtual address.  If
 230    relocated, alignment must be preserved.  */
 231 #define SHN_MIPS_ACOMMON        SHN_LORESERVE
 232
 233 /* Defined and allocated text symbol.  Value is virtual address.
 234    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 235 #define SHN_MIPS_TEXT           (SHN_LORESERVE + 1)
 236
 237 /* Defined and allocated data symbol.  Value is virtual address.
 238    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 239 #define SHN_MIPS_DATA           (SHN_LORESERVE + 2)
 240
 241 /* Small common symbol.  */
 242 #define SHN_MIPS_SCOMMON        (SHN_LORESERVE + 3)
 243
 244 /* Small undefined symbol.  */
 245 #define SHN_MIPS_SUNDEFINED     (SHN_LORESERVE + 4)
 246 \f
 247 /* Processor specific section types.  */
 248
 249 /* Section contains the set of dynamic shared objects used when
 250    statically linking.  */
 251 #define SHT_MIPS_LIBLIST        0x70000000
 252
 253 /* I'm not sure what this is, but it's used on Irix 5.  */
 254 #define SHT_MIPS_MSYM           0x70000001
 255
 256 /* Section contains list of symbols whose definitions conflict with
 257    symbols defined in shared objects.  */
 258 #define SHT_MIPS_CONFLICT       0x70000002
 259
 260 /* Section contains the global pointer table.  */
 261 #define SHT_MIPS_GPTAB          0x70000003
 262
 263 /* Section contains microcode information.  The exact format is
 264    unspecified.  */
 265 #define SHT_MIPS_UCODE          0x70000004
 266
 267 /* Section contains some sort of debugging information.  The exact
 268    format is unspecified.  It's probably ECOFF symbols.  */
 269 #define SHT_MIPS_DEBUG          0x70000005
 270
 271 /* Section contains register usage information.  */
 272 #define SHT_MIPS_REGINFO        0x70000006
 273
 274 /* ??? */
 275 #define SHT_MIPS_PACKAGE        0x70000007
 276
 277 /* ??? */
 278 #define SHT_MIPS_PACKSYM        0x70000008
 279
 280 /* ??? */
 281 #define SHT_MIPS_RELD           0x70000009
 282
 283 /* Section contains interface information.  */
 284 #define SHT_MIPS_IFACE          0x7000000b
 285
 286 /* Section contains description of contents of another section.  */
 287 #define SHT_MIPS_CONTENT        0x7000000c
 288
 289 /* Section contains miscellaneous options.  */
 290 #define SHT_MIPS_OPTIONS        0x7000000d
 291
 292 /* ??? */
 293 #define SHT_MIPS_SHDR           0x70000010
 294
 295 /* ??? */
 296 #define SHT_MIPS_FDESC          0x70000011
 297
 298 /* ??? */
 299 #define SHT_MIPS_EXTSYM         0x70000012
 300
 301 /* ??? */
 302 #define SHT_MIPS_DENSE          0x70000013
 303
 304 /* ??? */
 305 #define SHT_MIPS_PDESC          0x70000014
 306
 307 /* ??? */
 308 #define SHT_MIPS_LOCSYM         0x70000015
 309
 310 /* ??? */
 311 #define SHT_MIPS_AUXSYM         0x70000016
 312
 313 /* ??? */
 314 #define SHT_MIPS_OPTSYM         0x70000017
 315
 316 /* ??? */
 317 #define SHT_MIPS_LOCSTR         0x70000018
 318
 319 /* ??? */
 320 #define SHT_MIPS_LINE           0x70000019
 321
 322 /* ??? */
 323 #define SHT_MIPS_RFDESC         0x7000001a
 324
 325 /* Delta C++: symbol table */
 326 #define SHT_MIPS_DELTASYM       0x7000001b
 327
 328 /* Delta C++: instance table */
 329 #define SHT_MIPS_DELTAINST      0x7000001c
 330
 331 /* Delta C++: class table */
 332 #define SHT_MIPS_DELTACLASS     0x7000001d
 333
 334 /* DWARF debugging section.  */
 335 #define SHT_MIPS_DWARF          0x7000001e
 336
 337 /* Delta C++: declarations */
 338 #define SHT_MIPS_DELTADECL      0x7000001f
 339
 340 /* List of libraries the binary depends on.  Includes a time stamp, version
 341    number.  */
 342 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 343
 344 /* Events section.  */
 345 #define SHT_MIPS_EVENTS         0x70000021
 346
 347 /* ??? */
 348 #define SHT_MIPS_TRANSLATE      0x70000022
 349
 350 /* Special pixie sections */
 351 #define SHT_MIPS_PIXIE          0x70000023
 352
 353 /* Address translation table (for debug info) */
 354 #define SHT_MIPS_XLATE          0x70000024
 355
 356 /* SGI internal address translation table (for debug info) */
 357 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 358
 359 /* Intermediate code */
 360 #define SHT_MIPS_WHIRL          0x70000026
 361
 362 /* C++ exception handling region info */
 363 #define SHT_MIPS_EH_REGION      0x70000027
 364
 365 /* Obsolete address translation table (for debug info) */
 366 #define SHT_MIPS_XLATE_OLD      0x70000028
 367
 368 /* Runtime procedure descriptor table exception information (ucode) ??? */
 369 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 370
 371
 372 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 373    following structure.  The sh_link field is the section index of the
 374    string table.  The sh_info field is the number of entries in the
 375    section.  */
 376 typedef struct
 377 {
 378   /* String table index for name of shared object.  */
 379   unsigned long l_name;
 380   /* Time stamp.  */
 381   unsigned long l_time_stamp;
 382   /* Checksum of symbol names and common sizes.  */
 383   unsigned long l_checksum;
 384   /* String table index for version.  */
 385   unsigned long l_version;
 386   /* Flags.  */
 387   unsigned long l_flags;
 388 } Elf32_Lib;
 389
 390 /* The external version of Elf32_Lib.  */
 391 typedef struct
 392 {
 393   unsigned char l_name[4];
 394   unsigned char l_time_stamp[4];
 395   unsigned char l_checksum[4];
 396   unsigned char l_version[4];
 397   unsigned char l_flags[4];
 398 } Elf32_External_Lib;
 399
 400 /* The l_flags field of an Elf32_Lib structure may contain the
 401    following flags.  */
 402
 403 /* Require an exact match at runtime.  */
 404 #define LL_EXACT_MATCH          0x00000001
 405
 406 /* Ignore version incompatibilities at runtime.  */
 407 #define LL_IGNORE_INT_VER       0x00000002
 408
 409 /* Require matching minor version number.  */
 410 #define LL_REQUIRE_MINOR        0x00000004
 411
 412 /* ??? */
 413 #define LL_EXPORTS              0x00000008
 414
 415 /* Delay loading of this library until really needed.  */
 416 #define LL_DELAY_LOAD           0x00000010
 417
 418 /* ??? Delta C++ stuff ??? */
 419 #define LL_DELTA                0x00000020
 420
 421
 422 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 423    .dynsym section.  Each element has the following type.  */
 424 typedef unsigned long Elf32_Conflict;
 425 typedef unsigned char Elf32_External_Conflict[4];
 426
 427 typedef unsigned long Elf64_Conflict;
 428 typedef unsigned char Elf64_External_Conflict[8];
 429
 430 /* A section of type SHT_MIPS_GPTAB contains information about how
 431    much GP space would be required for different -G arguments.  This
 432    information is only used so that the linker can provide informative
 433    suggestions as to the best -G value to use.  The sh_info field is
 434    the index of the section for which this information applies.  The
 435    contents of the section are an array of the following union.  The
 436    first element uses the gt_header field.  The remaining elements use
 437    the gt_entry field.  */
 438 typedef union
 439 {
 440   struct
 441     {
 442       /* -G value actually used for this object file.  */
 443       unsigned long gt_current_g_value;
 444       /* Unused.  */
 445       unsigned long gt_unused;
 446     } gt_header;
 447   struct
 448     {
 449       /* If this -G argument has been used...  */
 450       unsigned long gt_g_value;
 451       /* ...this many GP section bytes would be required.  */
 452       unsigned long gt_bytes;
 453     } gt_entry;
 454 } Elf32_gptab;
 455
 456 /* The external version of Elf32_gptab.  */
 457
 458 typedef union
 459 {
 460   struct
 461     {
 462       unsigned char gt_current_g_value[4];
 463       unsigned char gt_unused[4];
 464     } gt_header;
 465   struct
 466     {
 467       unsigned char gt_g_value[4];
 468       unsigned char gt_bytes[4];
 469     } gt_entry;
 470 } Elf32_External_gptab;
 471
 472 /* A section of type SHT_MIPS_REGINFO contains the following
 473    structure.  */
 474 typedef struct
 475 {
 476   /* Mask of general purpose registers used.  */
 477   unsigned long ri_gprmask;
 478   /* Mask of co-processor registers used.  */
 479   unsigned long ri_cprmask[4];
 480   /* GP register value for this object file.  */
 481   long ri_gp_value;
 482 } Elf32_RegInfo;
 483
 484 /* The external version of the Elf_RegInfo structure.  */
 485 typedef struct
 486 {
 487   unsigned char ri_gprmask[4];
 488   unsigned char ri_cprmask[4][4];
 489   unsigned char ri_gp_value[4];
 490 } Elf32_External_RegInfo;
 491
 492 /* MIPS ELF .reginfo swapping routines.  */
 493 extern void bfd_mips_elf32_swap_reginfo_in
 494   (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
 495 extern void bfd_mips_elf32_swap_reginfo_out
 496   (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
 497 \f
 498 /* Processor specific section flags.  */
 499
 500 /* This section must be in the global data area.  */
 501 #define SHF_MIPS_GPREL          0x10000000
 502
 503 /* This section should be merged.  */
 504 #define SHF_MIPS_MERGE          0x20000000
 505
 506 /* This section contains address data of size implied by section
 507    element size.  */
 508 #define SHF_MIPS_ADDR           0x40000000
 509
 510 /* This section contains string data.  */
 511 #define SHF_MIPS_STRING         0x80000000
 512
 513 /* This section may not be stripped.  */
 514 #define SHF_MIPS_NOSTRIP        0x08000000
 515
 516 /* This section is local to threads.  */
 517 #define SHF_MIPS_LOCAL          0x04000000
 518
 519 /* Linker should generate implicit weak names for this section.  */
 520 #define SHF_MIPS_NAMES          0x02000000
 521
 522 /* Section contais text/data which may be replicated in other sections.
 523    Linker should retain only one copy.  */
 524 #define SHF_MIPS_NODUPES        0x01000000
 525 \f
 526 /* Processor specific program header types.  */
 527
 528 /* Register usage information.  Identifies one .reginfo section.  */
 529 #define PT_MIPS_REGINFO         0x70000000
 530
 531 /* Runtime procedure table.  */
 532 #define PT_MIPS_RTPROC          0x70000001
 533
 534 /* .MIPS.options section.  */
 535 #define PT_MIPS_OPTIONS         0x70000002
 536 \f
 537 /* Processor specific dynamic array tags.  */
 538
 539 /* 32 bit version number for runtime linker interface.  */
 540 #define DT_MIPS_RLD_VERSION     0x70000001
 541
 542 /* Time stamp.  */
 543 #define DT_MIPS_TIME_STAMP      0x70000002
 544
 545 /* Checksum of external strings and common sizes.  */
 546 #define DT_MIPS_ICHECKSUM       0x70000003
 547
 548 /* Index of version string in string table.  */
 549 #define DT_MIPS_IVERSION        0x70000004
 550
 551 /* 32 bits of flags.  */
 552 #define DT_MIPS_FLAGS           0x70000005
 553
 554 /* Base address of the segment.  */
 555 #define DT_MIPS_BASE_ADDRESS    0x70000006
 556
 557 /* ??? */
 558 #define DT_MIPS_MSYM            0x70000007
 559
 560 /* Address of .conflict section.  */
 561 #define DT_MIPS_CONFLICT        0x70000008
 562
 563 /* Address of .liblist section.  */
 564 #define DT_MIPS_LIBLIST         0x70000009
 565
 566 /* Number of local global offset table entries.  */
 567 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 568
 569 /* Number of entries in the .conflict section.  */
 570 #define DT_MIPS_CONFLICTNO      0x7000000b
 571
 572 /* Number of entries in the .liblist section.  */
 573 #define DT_MIPS_LIBLISTNO       0x70000010
 574
 575 /* Number of entries in the .dynsym section.  */
 576 #define DT_MIPS_SYMTABNO        0x70000011
 577
 578 /* Index of first external dynamic symbol not referenced locally.  */
 579 #define DT_MIPS_UNREFEXTNO      0x70000012
 580
 581 /* Index of first dynamic symbol in global offset table.  */
 582 #define DT_MIPS_GOTSYM          0x70000013
 583
 584 /* Number of page table entries in global offset table.  */
 585 #define DT_MIPS_HIPAGENO        0x70000014
 586
 587 /* Address of run time loader map, used for debugging.  */
 588 #define DT_MIPS_RLD_MAP         0x70000016
 589
 590 /* Delta C++ class definition.  */
 591 #define DT_MIPS_DELTA_CLASS     0x70000017
 592
 593 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 594 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 595
 596 /* Delta C++ class instances.  */
 597 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 598
 599 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 600 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 601
 602 /* Delta relocations.  */
 603 #define DT_MIPS_DELTA_RELOC     0x7000001b
 604
 605 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 606 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 607
 608 /* Delta symbols that Delta relocations refer to.  */
 609 #define DT_MIPS_DELTA_SYM       0x7000001d
 610
 611 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 612 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 613
 614 /* Delta symbols that hold class declarations.  */
 615 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 616
 617 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 618 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 619
 620 /* Flags indicating information about C++ flavor.  */
 621 #define DT_MIPS_CXX_FLAGS       0x70000022
 622
 623 /* Pixie information (???).  */
 624 #define DT_MIPS_PIXIE_INIT      0x70000023
 625
 626 /* Address of .MIPS.symlib */
 627 #define DT_MIPS_SYMBOL_LIB      0x70000024
 628
 629 /* The GOT index of the first PTE for a segment */
 630 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 631
 632 /* The GOT index of the first PTE for a local symbol */
 633 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 634
 635 /* The GOT index of the first PTE for a hidden symbol */
 636 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 637
 638 /* The GOT index of the first PTE for a protected symbol */
 639 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 640
 641 /* Address of `.MIPS.options'.  */
 642 #define DT_MIPS_OPTIONS         0x70000029
 643
 644 /* Address of `.interface'.  */
 645 #define DT_MIPS_INTERFACE       0x7000002a
 646
 647 /* ??? */
 648 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 649
 650 /* Size of the .interface section.  */
 651 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 652
 653 /* Size of rld_text_resolve function stored in the GOT.  */
 654 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 655
 656 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 657 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 658
 659 /* Size of compact relocation section (O32).  */
 660 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 661
 662 /* GP value for auxiliary GOTs.  */
 663 #define DT_MIPS_GP_VALUE        0x70000030
 664
 665 /* Address of auxiliary .dynamic.  */
 666 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 667
 668 /* Address of the base of the PLTGOT.  */
 669 #define DT_MIPS_PLTGOT         0x70000032
 670
 671 /* Points to the base of a writable PLT.  */
 672 #define DT_MIPS_RWPLT          0x70000034
 673 \f
 674 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 675
 676 /* No flags.  */
 677 #define RHF_NONE                0x00000000
 678
 679 /* Uses shortcut pointers.  */
 680 #define RHF_QUICKSTART          0x00000001
 681
 682 /* Hash size is not a power of two.  */
 683 #define RHF_NOTPOT              0x00000002
 684
 685 /* Ignore LD_LIBRARY_PATH.  */
 686 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
 687
 688 /* DSO address may not be relocated. */
 689 #define RHF_NO_MOVE             0x00000008
 690
 691 /* SGI specific features. */
 692 #define RHF_SGI_ONLY            0x00000010
 693
 694 /* Guarantee that .init will finish executing before any non-init
 695    code in DSO is called. */
 696 #define RHF_GUARANTEE_INIT         0x00000020
 697
 698 /* Contains Delta C++ code. */
 699 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 700
 701 /* Guarantee that .init will start executing before any non-init
 702    code in DSO is called. */
 703 #define RHF_GUARANTEE_START_INIT   0x00000080
 704
 705 /* Generated by pixie. */
 706 #define RHF_PIXIE                  0x00000100
 707
 708 /* Delay-load DSO by default. */
 709 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 710
 711 /* Object may be requickstarted */
 712 #define RHF_REQUICKSTART           0x00000400
 713
 714 /* Object has been requickstarted */
 715 #define RHF_REQUICKSTARTED         0x00000800
 716
 717 /* Generated by cord. */
 718 #define RHF_CORD                   0x00001000
 719
 720 /* Object contains no unresolved undef symbols. */
 721 #define RHF_NO_UNRES_UNDEF         0x00002000
 722
 723 /* Symbol table is in a safe order. */
 724 #define RHF_RLD_ORDER_SAFE         0x00004000
 725 \f
 726 /* Special values for the st_other field in the symbol table.  These
 727    are used in an Irix 5 dynamic symbol table.  */
 728
 729 #define STO_DEFAULT             STV_DEFAULT
 730 #define STO_INTERNAL            STV_INTERNAL
 731 #define STO_HIDDEN              STV_HIDDEN
 732 #define STO_PROTECTED           STV_PROTECTED
 733
 734 /* The MIPS psABI was updated in 2008 with support for PLTs and copy
 735    relocs.  There are therefore two types of nonzero SHN_UNDEF functions:
 736    PLT entries and traditional MIPS lazy binding stubs.  We mark the former
 737    with STO_MIPS_PLT to distinguish them from the latter.  */
 738 #define STO_MIPS_PLT            0x8
 739
 740 /* This value is used to mark PIC functions in an object that mixes
 741    PIC and non-PIC.  */
 742 #define STO_MIPS_PIC            0x20
 743 #define ELF_ST_IS_MIPS_PIC(OTHER) \
 744   (((OTHER) & ~ELF_ST_VISIBILITY (-1)) == STO_MIPS_PIC)
 745 #define ELF_ST_SET_MIPS_PIC(OTHER) \
 746   (STO_MIPS_PIC | ELF_ST_VISIBILITY (OTHER))
 747
 748 /* This value is used for a mips16 .text symbol.  */
 749 #define STO_MIPS16              0xf0
 750 #define ELF_ST_IS_MIPS16(OTHER) (((OTHER) & 0xf0) == STO_MIPS16)
 751 #define ELF_ST_SET_MIPS16(OTHER) (((OTHER) & ~0xf0) | STO_MIPS16)
 752
 753 /* This bit is used on Irix to indicate a symbol whose definition
 754    is optional - if, at final link time, it cannot be found, no
 755    error message should be produced.  */
 756 #define STO_OPTIONAL            (1 << 2)
 757 /* A macro to examine the STO_OPTIONAL bit.  */
 758 #define ELF_MIPS_IS_OPTIONAL(other)     ((other) & STO_OPTIONAL)
 759 \f
 760 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 761    relocation entry specifies up to three actual relocations, all at
 762    the same address.  The first relocation which required a symbol
 763    uses the symbol in the r_sym field.  The second relocation which
 764    requires a symbol uses the symbol in the r_ssym field.  If all
 765    three relocations require a symbol, the third one uses a zero
 766    value.  */
 767
 768 /* An entry in a 64 bit SHT_REL section.  */
 769
 770 typedef struct
 771 {
 772   /* Address of relocation.  */
 773   unsigned char r_offset[8];
 774   /* Symbol index.  */
 775   unsigned char r_sym[4];
 776   /* Special symbol.  */
 777   unsigned char r_ssym[1];
 778   /* Third relocation.  */
 779   unsigned char r_type3[1];
 780   /* Second relocation.  */
 781   unsigned char r_type2[1];
 782   /* First relocation.  */
 783   unsigned char r_type[1];
 784 } Elf64_Mips_External_Rel;
 785
 786 typedef struct
 787 {
 788   /* Address of relocation.  */
 789   bfd_vma r_offset;
 790   /* Symbol index.  */
 791   unsigned long r_sym;
 792   /* Special symbol.  */
 793   unsigned char r_ssym;
 794   /* Third relocation.  */
 795   unsigned char r_type3;
 796   /* Second relocation.  */
 797   unsigned char r_type2;
 798   /* First relocation.  */
 799   unsigned char r_type;
 800 } Elf64_Mips_Internal_Rel;
 801
 802 /* An entry in a 64 bit SHT_RELA section.  */
 803
 804 typedef struct
 805 {
 806   /* Address of relocation.  */
 807   unsigned char r_offset[8];
 808   /* Symbol index.  */
 809   unsigned char r_sym[4];
 810   /* Special symbol.  */
 811   unsigned char r_ssym[1];
 812   /* Third relocation.  */
 813   unsigned char r_type3[1];
 814   /* Second relocation.  */
 815   unsigned char r_type2[1];
 816   /* First relocation.  */
 817   unsigned char r_type[1];
 818   /* Addend.  */
 819   unsigned char r_addend[8];
 820 } Elf64_Mips_External_Rela;
 821
 822 typedef struct
 823 {
 824   /* Address of relocation.  */
 825   bfd_vma r_offset;
 826   /* Symbol index.  */
 827   unsigned long r_sym;
 828   /* Special symbol.  */
 829   unsigned char r_ssym;
 830   /* Third relocation.  */
 831   unsigned char r_type3;
 832   /* Second relocation.  */
 833   unsigned char r_type2;
 834   /* First relocation.  */
 835   unsigned char r_type;
 836   /* Addend.  */
 837   bfd_signed_vma r_addend;
 838 } Elf64_Mips_Internal_Rela;
 839
 840 /* MIPS ELF 64 relocation info access macros.  */
 841 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
 842 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
 843 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
 844 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
 845
 846 /* Values found in the r_ssym field of a relocation entry.  */
 847
 848 /* No relocation.  */
 849 #define RSS_UNDEF       0
 850
 851 /* Value of GP.  */
 852 #define RSS_GP          1
 853
 854 /* Value of GP in object being relocated.  */
 855 #define RSS_GP0         2
 856
 857 /* Address of location being relocated.  */
 858 #define RSS_LOC         3
 859 \f
 860 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 861    which starts with this header.  */
 862
 863 typedef struct
 864 {
 865   /* Type of option.  */
 866   unsigned char kind[1];
 867   /* Size of option descriptor, including header.  */
 868   unsigned char size[1];
 869   /* Section index of affected section, or 0 for global option.  */
 870   unsigned char section[2];
 871   /* Information specific to this kind of option.  */
 872   unsigned char info[4];
 873 } Elf_External_Options;
 874
 875 typedef struct
 876 {
 877   /* Type of option.  */
 878   unsigned char kind;
 879   /* Size of option descriptor, including header.  */
 880   unsigned char size;
 881   /* Section index of affected section, or 0 for global option.  */
 882   unsigned short section;
 883   /* Information specific to this kind of option.  */
 884   unsigned long info;
 885 } Elf_Internal_Options;
 886
 887 /* MIPS ELF option header swapping routines.  */
 888 extern void bfd_mips_elf_swap_options_in
 889   (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
 890 extern void bfd_mips_elf_swap_options_out
 891   (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
 892
 893 /* Values which may appear in the kind field of an Elf_Options
 894    structure.  */
 895
 896 /* Undefined.  */
 897 #define ODK_NULL        0
 898
 899 /* Register usage and GP value.  */
 900 #define ODK_REGINFO     1
 901
 902 /* Exception processing information.  */
 903 #define ODK_EXCEPTIONS  2
 904
 905 /* Section padding information.  */
 906 #define ODK_PAD         3
 907
 908 /* Hardware workarounds performed.  */
 909 #define ODK_HWPATCH     4
 910
 911 /* Fill value used by the linker.  */
 912 #define ODK_FILL        5
 913
 914 /* Reserved space for desktop tools.  */
 915 #define ODK_TAGS        6
 916
 917 /* Hardware workarounds, AND bits when merging.  */
 918 #define ODK_HWAND       7
 919
 920 /* Hardware workarounds, OR bits when merging.  */
 921 #define ODK_HWOR        8
 922
 923 /* GP group to use for text/data sections.  */
 924 #define ODK_GP_GROUP    9
 925
 926 /* ID information.  */
 927 #define ODK_IDENT       10
 928
 929 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
 930    structure.  In the 64 bit ABI, it is the following structure.  The
 931    info field of the options header is not used.  */
 932
 933 typedef struct
 934 {
 935   /* Mask of general purpose registers used.  */
 936   unsigned char ri_gprmask[4];
 937   /* Padding.  */
 938   unsigned char ri_pad[4];
 939   /* Mask of co-processor registers used.  */
 940   unsigned char ri_cprmask[4][4];
 941   /* GP register value for this object file.  */
 942   unsigned char ri_gp_value[8];
 943 } Elf64_External_RegInfo;
 944
 945 typedef struct
 946 {
 947   /* Mask of general purpose registers used.  */
 948   unsigned long ri_gprmask;
 949   /* Padding.  */
 950   unsigned long ri_pad;
 951   /* Mask of co-processor registers used.  */
 952   unsigned long ri_cprmask[4];
 953   /* GP register value for this object file.  */
 954   bfd_vma ri_gp_value;
 955 } Elf64_Internal_RegInfo;
 956
 957 typedef struct
 958 {
 959   /* The hash value computed from the name of the corresponding
 960      dynamic symbol.  */
 961   unsigned char ms_hash_value[4];
 962   /* Contains both the dynamic relocation index and the symbol flags
 963      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 964      to access the individual values.  The dynamic relocation index
 965      identifies the first entry in the .rel.dyn section that
 966      references the dynamic symbol corresponding to this msym entry.
 967      If the index is 0, no dynamic relocations are associated with the
 968      symbol.  The symbol flags field is reserved for future use.  */
 969   unsigned char ms_info[4];
 970 } Elf32_External_Msym;
 971
 972 typedef struct
 973 {
 974   /* The hash value computed from the name of the corresponding
 975      dynamic symbol.  */
 976   unsigned long ms_hash_value;
 977   /* Contains both the dynamic relocation index and the symbol flags
 978      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 979      to access the individual values.  The dynamic relocation index
 980      identifies the first entry in the .rel.dyn section that
 981      references the dynamic symbol corresponding to this msym entry.
 982      If the index is 0, no dynamic relocations are associated with the
 983      symbol.  The symbol flags field is reserved for future use.  */
 984   unsigned long ms_info;
 985 } Elf32_Internal_Msym;
 986
 987 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
 988 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
 989 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
 990
 991 /* MIPS ELF reginfo swapping routines.  */
 992 extern void bfd_mips_elf64_swap_reginfo_in
 993   (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
 994 extern void bfd_mips_elf64_swap_reginfo_out
 995   (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
 996
 997 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
 998 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
 999 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
1000 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
1001 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
1002 #define OEX_FPDBUG      0x40000 /* Force precise floating-point
1003                                    exceptions (debug mode).  */
1004 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
1005
1006 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
1007 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
1008 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
1009 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
1010 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
1011 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
1012
1013 /* Masks for the info word of an ODK_PAD descriptor.  */
1014 #define OPAD_PREFIX     0x01
1015 #define OPAD_POSTFIX    0x02
1016 #define OPAD_SYMBOL     0x04
1017
1018 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
1019 #define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
1020 #define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
1021 #define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
1022 #define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
1023                                            (clean == 1).  */
1024 #define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
1025                                            load patch. */
1026
1027 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
1028 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
1029 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
1030
1031 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
1032 #define OHWA0_R4KEOP_CHECKED    0x00000001
1033 #define OHWA0_R4KEOP_CLEAN      0x00000002
1034 \f
1035
1036 /* Object attribute tags.  */
1037 enum
1038 {
1039   /* 0-3 are generic.  */
1040   Tag_GNU_MIPS_ABI_FP = 4, /* Value 1 for hard-float -mdouble-float, 2
1041                               for hard-float -msingle-float, 3 for
1042                               soft-float, 4 for -mips32r2 -mfp64; 0 for
1043                               not tagged or not using any ABIs affected
1044                               by the differences.  */
1045 };
1046
1047 #endif /* _ELF_MIPS_H */