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 #define E_MIPS_MACH_LS2E        0x00A00000
 220 #define E_MIPS_MACH_LS2F        0x00A10000
 221 \f
 222 /* Processor specific section indices.  These sections do not actually
 223    exist.  Symbols with a st_shndx field corresponding to one of these
 224    values have a special meaning.  */
 225
 226 /* Defined and allocated common symbol.  Value is virtual address.  If
 227    relocated, alignment must be preserved.  */
 228 #define SHN_MIPS_ACOMMON        0xff00
 229
 230 /* Defined and allocated text symbol.  Value is virtual address.
 231    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 232 #define SHN_MIPS_TEXT           0xff01
 233
 234 /* Defined and allocated data symbol.  Value is virtual address.
 235    Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
 236 #define SHN_MIPS_DATA           0xff02
 237
 238 /* Small common symbol.  */
 239 #define SHN_MIPS_SCOMMON        0xff03
 240
 241 /* Small undefined symbol.  */
 242 #define SHN_MIPS_SUNDEFINED     0xff04
 243 \f
 244 /* Processor specific section types.  */
 245
 246 /* Section contains the set of dynamic shared objects used when
 247    statically linking.  */
 248 #define SHT_MIPS_LIBLIST        0x70000000
 249
 250 /* I'm not sure what this is, but it's used on Irix 5.  */
 251 #define SHT_MIPS_MSYM           0x70000001
 252
 253 /* Section contains list of symbols whose definitions conflict with
 254    symbols defined in shared objects.  */
 255 #define SHT_MIPS_CONFLICT       0x70000002
 256
 257 /* Section contains the global pointer table.  */
 258 #define SHT_MIPS_GPTAB          0x70000003
 259
 260 /* Section contains microcode information.  The exact format is
 261    unspecified.  */
 262 #define SHT_MIPS_UCODE          0x70000004
 263
 264 /* Section contains some sort of debugging information.  The exact
 265    format is unspecified.  It's probably ECOFF symbols.  */
 266 #define SHT_MIPS_DEBUG          0x70000005
 267
 268 /* Section contains register usage information.  */
 269 #define SHT_MIPS_REGINFO        0x70000006
 270
 271 /* ??? */
 272 #define SHT_MIPS_PACKAGE        0x70000007
 273
 274 /* ??? */
 275 #define SHT_MIPS_PACKSYM        0x70000008
 276
 277 /* ??? */
 278 #define SHT_MIPS_RELD           0x70000009
 279
 280 /* Section contains interface information.  */
 281 #define SHT_MIPS_IFACE          0x7000000b
 282
 283 /* Section contains description of contents of another section.  */
 284 #define SHT_MIPS_CONTENT        0x7000000c
 285
 286 /* Section contains miscellaneous options.  */
 287 #define SHT_MIPS_OPTIONS        0x7000000d
 288
 289 /* ??? */
 290 #define SHT_MIPS_SHDR           0x70000010
 291
 292 /* ??? */
 293 #define SHT_MIPS_FDESC          0x70000011
 294
 295 /* ??? */
 296 #define SHT_MIPS_EXTSYM         0x70000012
 297
 298 /* ??? */
 299 #define SHT_MIPS_DENSE          0x70000013
 300
 301 /* ??? */
 302 #define SHT_MIPS_PDESC          0x70000014
 303
 304 /* ??? */
 305 #define SHT_MIPS_LOCSYM         0x70000015
 306
 307 /* ??? */
 308 #define SHT_MIPS_AUXSYM         0x70000016
 309
 310 /* ??? */
 311 #define SHT_MIPS_OPTSYM         0x70000017
 312
 313 /* ??? */
 314 #define SHT_MIPS_LOCSTR         0x70000018
 315
 316 /* ??? */
 317 #define SHT_MIPS_LINE           0x70000019
 318
 319 /* ??? */
 320 #define SHT_MIPS_RFDESC         0x7000001a
 321
 322 /* Delta C++: symbol table */
 323 #define SHT_MIPS_DELTASYM       0x7000001b
 324
 325 /* Delta C++: instance table */
 326 #define SHT_MIPS_DELTAINST      0x7000001c
 327
 328 /* Delta C++: class table */
 329 #define SHT_MIPS_DELTACLASS     0x7000001d
 330
 331 /* DWARF debugging section.  */
 332 #define SHT_MIPS_DWARF          0x7000001e
 333
 334 /* Delta C++: declarations */
 335 #define SHT_MIPS_DELTADECL      0x7000001f
 336
 337 /* List of libraries the binary depends on.  Includes a time stamp, version
 338    number.  */
 339 #define SHT_MIPS_SYMBOL_LIB     0x70000020
 340
 341 /* Events section.  */
 342 #define SHT_MIPS_EVENTS         0x70000021
 343
 344 /* ??? */
 345 #define SHT_MIPS_TRANSLATE      0x70000022
 346
 347 /* Special pixie sections */
 348 #define SHT_MIPS_PIXIE          0x70000023
 349
 350 /* Address translation table (for debug info) */
 351 #define SHT_MIPS_XLATE          0x70000024
 352
 353 /* SGI internal address translation table (for debug info) */
 354 #define SHT_MIPS_XLATE_DEBUG    0x70000025
 355
 356 /* Intermediate code */
 357 #define SHT_MIPS_WHIRL          0x70000026
 358
 359 /* C++ exception handling region info */
 360 #define SHT_MIPS_EH_REGION      0x70000027
 361
 362 /* Obsolete address translation table (for debug info) */
 363 #define SHT_MIPS_XLATE_OLD      0x70000028
 364
 365 /* Runtime procedure descriptor table exception information (ucode) ??? */
 366 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
 367
 368
 369 /* A section of type SHT_MIPS_LIBLIST contains an array of the
 370    following structure.  The sh_link field is the section index of the
 371    string table.  The sh_info field is the number of entries in the
 372    section.  */
 373 typedef struct
 374 {
 375   /* String table index for name of shared object.  */
 376   unsigned long l_name;
 377   /* Time stamp.  */
 378   unsigned long l_time_stamp;
 379   /* Checksum of symbol names and common sizes.  */
 380   unsigned long l_checksum;
 381   /* String table index for version.  */
 382   unsigned long l_version;
 383   /* Flags.  */
 384   unsigned long l_flags;
 385 } Elf32_Lib;
 386
 387 /* The external version of Elf32_Lib.  */
 388 typedef struct
 389 {
 390   unsigned char l_name[4];
 391   unsigned char l_time_stamp[4];
 392   unsigned char l_checksum[4];
 393   unsigned char l_version[4];
 394   unsigned char l_flags[4];
 395 } Elf32_External_Lib;
 396
 397 /* The l_flags field of an Elf32_Lib structure may contain the
 398    following flags.  */
 399
 400 /* Require an exact match at runtime.  */
 401 #define LL_EXACT_MATCH          0x00000001
 402
 403 /* Ignore version incompatibilities at runtime.  */
 404 #define LL_IGNORE_INT_VER       0x00000002
 405
 406 /* Require matching minor version number.  */
 407 #define LL_REQUIRE_MINOR        0x00000004
 408
 409 /* ??? */
 410 #define LL_EXPORTS              0x00000008
 411
 412 /* Delay loading of this library until really needed.  */
 413 #define LL_DELAY_LOAD           0x00000010
 414
 415 /* ??? Delta C++ stuff ??? */
 416 #define LL_DELTA                0x00000020
 417
 418
 419 /* A section of type SHT_MIPS_CONFLICT is an array of indices into the
 420    .dynsym section.  Each element has the following type.  */
 421 typedef unsigned long Elf32_Conflict;
 422 typedef unsigned char Elf32_External_Conflict[4];
 423
 424 typedef unsigned long Elf64_Conflict;
 425 typedef unsigned char Elf64_External_Conflict[8];
 426
 427 /* A section of type SHT_MIPS_GPTAB contains information about how
 428    much GP space would be required for different -G arguments.  This
 429    information is only used so that the linker can provide informative
 430    suggestions as to the best -G value to use.  The sh_info field is
 431    the index of the section for which this information applies.  The
 432    contents of the section are an array of the following union.  The
 433    first element uses the gt_header field.  The remaining elements use
 434    the gt_entry field.  */
 435 typedef union
 436 {
 437   struct
 438     {
 439       /* -G value actually used for this object file.  */
 440       unsigned long gt_current_g_value;
 441       /* Unused.  */
 442       unsigned long gt_unused;
 443     } gt_header;
 444   struct
 445     {
 446       /* If this -G argument has been used...  */
 447       unsigned long gt_g_value;
 448       /* ...this many GP section bytes would be required.  */
 449       unsigned long gt_bytes;
 450     } gt_entry;
 451 } Elf32_gptab;
 452
 453 /* The external version of Elf32_gptab.  */
 454
 455 typedef union
 456 {
 457   struct
 458     {
 459       unsigned char gt_current_g_value[4];
 460       unsigned char gt_unused[4];
 461     } gt_header;
 462   struct
 463     {
 464       unsigned char gt_g_value[4];
 465       unsigned char gt_bytes[4];
 466     } gt_entry;
 467 } Elf32_External_gptab;
 468
 469 /* A section of type SHT_MIPS_REGINFO contains the following
 470    structure.  */
 471 typedef struct
 472 {
 473   /* Mask of general purpose registers used.  */
 474   unsigned long ri_gprmask;
 475   /* Mask of co-processor registers used.  */
 476   unsigned long ri_cprmask[4];
 477   /* GP register value for this object file.  */
 478   long ri_gp_value;
 479 } Elf32_RegInfo;
 480
 481 /* The external version of the Elf_RegInfo structure.  */
 482 typedef struct
 483 {
 484   unsigned char ri_gprmask[4];
 485   unsigned char ri_cprmask[4][4];
 486   unsigned char ri_gp_value[4];
 487 } Elf32_External_RegInfo;
 488
 489 /* MIPS ELF .reginfo swapping routines.  */
 490 extern void bfd_mips_elf32_swap_reginfo_in
 491   (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
 492 extern void bfd_mips_elf32_swap_reginfo_out
 493   (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
 494 \f
 495 /* Processor specific section flags.  */
 496
 497 /* This section must be in the global data area.  */
 498 #define SHF_MIPS_GPREL          0x10000000
 499
 500 /* This section should be merged.  */
 501 #define SHF_MIPS_MERGE          0x20000000
 502
 503 /* This section contains address data of size implied by section
 504    element size.  */
 505 #define SHF_MIPS_ADDR           0x40000000
 506
 507 /* This section contains string data.  */
 508 #define SHF_MIPS_STRING         0x80000000
 509
 510 /* This section may not be stripped.  */
 511 #define SHF_MIPS_NOSTRIP        0x08000000
 512
 513 /* This section is local to threads.  */
 514 #define SHF_MIPS_LOCAL          0x04000000
 515
 516 /* Linker should generate implicit weak names for this section.  */
 517 #define SHF_MIPS_NAMES          0x02000000
 518
 519 /* Section contais text/data which may be replicated in other sections.
 520    Linker should retain only one copy.  */
 521 #define SHF_MIPS_NODUPES        0x01000000
 522 \f
 523 /* Processor specific program header types.  */
 524
 525 /* Register usage information.  Identifies one .reginfo section.  */
 526 #define PT_MIPS_REGINFO         0x70000000
 527
 528 /* Runtime procedure table.  */
 529 #define PT_MIPS_RTPROC          0x70000001
 530
 531 /* .MIPS.options section.  */
 532 #define PT_MIPS_OPTIONS         0x70000002
 533 \f
 534 /* Processor specific dynamic array tags.  */
 535
 536 /* 32 bit version number for runtime linker interface.  */
 537 #define DT_MIPS_RLD_VERSION     0x70000001
 538
 539 /* Time stamp.  */
 540 #define DT_MIPS_TIME_STAMP      0x70000002
 541
 542 /* Checksum of external strings and common sizes.  */
 543 #define DT_MIPS_ICHECKSUM       0x70000003
 544
 545 /* Index of version string in string table.  */
 546 #define DT_MIPS_IVERSION        0x70000004
 547
 548 /* 32 bits of flags.  */
 549 #define DT_MIPS_FLAGS           0x70000005
 550
 551 /* Base address of the segment.  */
 552 #define DT_MIPS_BASE_ADDRESS    0x70000006
 553
 554 /* ??? */
 555 #define DT_MIPS_MSYM            0x70000007
 556
 557 /* Address of .conflict section.  */
 558 #define DT_MIPS_CONFLICT        0x70000008
 559
 560 /* Address of .liblist section.  */
 561 #define DT_MIPS_LIBLIST         0x70000009
 562
 563 /* Number of local global offset table entries.  */
 564 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 565
 566 /* Number of entries in the .conflict section.  */
 567 #define DT_MIPS_CONFLICTNO      0x7000000b
 568
 569 /* Number of entries in the .liblist section.  */
 570 #define DT_MIPS_LIBLISTNO       0x70000010
 571
 572 /* Number of entries in the .dynsym section.  */
 573 #define DT_MIPS_SYMTABNO        0x70000011
 574
 575 /* Index of first external dynamic symbol not referenced locally.  */
 576 #define DT_MIPS_UNREFEXTNO      0x70000012
 577
 578 /* Index of first dynamic symbol in global offset table.  */
 579 #define DT_MIPS_GOTSYM          0x70000013
 580
 581 /* Number of page table entries in global offset table.  */
 582 #define DT_MIPS_HIPAGENO        0x70000014
 583
 584 /* Address of run time loader map, used for debugging.  */
 585 #define DT_MIPS_RLD_MAP         0x70000016
 586
 587 /* Delta C++ class definition.  */
 588 #define DT_MIPS_DELTA_CLASS     0x70000017
 589
 590 /* Number of entries in DT_MIPS_DELTA_CLASS.  */
 591 #define DT_MIPS_DELTA_CLASS_NO  0x70000018
 592
 593 /* Delta C++ class instances.  */
 594 #define DT_MIPS_DELTA_INSTANCE  0x70000019
 595
 596 /* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
 597 #define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
 598
 599 /* Delta relocations.  */
 600 #define DT_MIPS_DELTA_RELOC     0x7000001b
 601
 602 /* Number of entries in DT_MIPS_DELTA_RELOC.  */
 603 #define DT_MIPS_DELTA_RELOC_NO  0x7000001c
 604
 605 /* Delta symbols that Delta relocations refer to.  */
 606 #define DT_MIPS_DELTA_SYM       0x7000001d
 607
 608 /* Number of entries in DT_MIPS_DELTA_SYM.  */
 609 #define DT_MIPS_DELTA_SYM_NO    0x7000001e
 610
 611 /* Delta symbols that hold class declarations.  */
 612 #define DT_MIPS_DELTA_CLASSSYM  0x70000020
 613
 614 /* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
 615 #define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
 616
 617 /* Flags indicating information about C++ flavor.  */
 618 #define DT_MIPS_CXX_FLAGS       0x70000022
 619
 620 /* Pixie information (???).  */
 621 #define DT_MIPS_PIXIE_INIT      0x70000023
 622
 623 /* Address of .MIPS.symlib */
 624 #define DT_MIPS_SYMBOL_LIB      0x70000024
 625
 626 /* The GOT index of the first PTE for a segment */
 627 #define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
 628
 629 /* The GOT index of the first PTE for a local symbol */
 630 #define DT_MIPS_LOCAL_GOTIDX    0x70000026
 631
 632 /* The GOT index of the first PTE for a hidden symbol */
 633 #define DT_MIPS_HIDDEN_GOTIDX   0x70000027
 634
 635 /* The GOT index of the first PTE for a protected symbol */
 636 #define DT_MIPS_PROTECTED_GOTIDX        0x70000028
 637
 638 /* Address of `.MIPS.options'.  */
 639 #define DT_MIPS_OPTIONS         0x70000029
 640
 641 /* Address of `.interface'.  */
 642 #define DT_MIPS_INTERFACE       0x7000002a
 643
 644 /* ??? */
 645 #define DT_MIPS_DYNSTR_ALIGN    0x7000002b
 646
 647 /* Size of the .interface section.  */
 648 #define DT_MIPS_INTERFACE_SIZE  0x7000002c
 649
 650 /* Size of rld_text_resolve function stored in the GOT.  */
 651 #define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
 652
 653 /* Default suffix of DSO to be added by rld on dlopen() calls.  */
 654 #define DT_MIPS_PERF_SUFFIX     0x7000002e
 655
 656 /* Size of compact relocation section (O32).  */
 657 #define DT_MIPS_COMPACT_SIZE    0x7000002f
 658
 659 /* GP value for auxiliary GOTs.  */
 660 #define DT_MIPS_GP_VALUE        0x70000030
 661
 662 /* Address of auxiliary .dynamic.  */
 663 #define DT_MIPS_AUX_DYNAMIC     0x70000031
 664 \f
 665 /* Flags which may appear in a DT_MIPS_FLAGS entry.  */
 666
 667 /* No flags.  */
 668 #define RHF_NONE                0x00000000
 669
 670 /* Uses shortcut pointers.  */
 671 #define RHF_QUICKSTART          0x00000001
 672
 673 /* Hash size is not a power of two.  */
 674 #define RHF_NOTPOT              0x00000002
 675
 676 /* Ignore LD_LIBRARY_PATH.  */
 677 #define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
 678
 679 /* DSO address may not be relocated. */
 680 #define RHF_NO_MOVE             0x00000008
 681
 682 /* SGI specific features. */
 683 #define RHF_SGI_ONLY            0x00000010
 684
 685 /* Guarantee that .init will finish executing before any non-init
 686    code in DSO is called. */
 687 #define RHF_GUARANTEE_INIT         0x00000020
 688
 689 /* Contains Delta C++ code. */
 690 #define RHF_DELTA_C_PLUS_PLUS      0x00000040
 691
 692 /* Guarantee that .init will start executing before any non-init
 693    code in DSO is called. */
 694 #define RHF_GUARANTEE_START_INIT   0x00000080
 695
 696 /* Generated by pixie. */
 697 #define RHF_PIXIE                  0x00000100
 698
 699 /* Delay-load DSO by default. */
 700 #define RHF_DEFAULT_DELAY_LOAD     0x00000200
 701
 702 /* Object may be requickstarted */
 703 #define RHF_REQUICKSTART           0x00000400
 704
 705 /* Object has been requickstarted */
 706 #define RHF_REQUICKSTARTED         0x00000800
 707
 708 /* Generated by cord. */
 709 #define RHF_CORD                   0x00001000
 710
 711 /* Object contains no unresolved undef symbols. */
 712 #define RHF_NO_UNRES_UNDEF         0x00002000
 713
 714 /* Symbol table is in a safe order. */
 715 #define RHF_RLD_ORDER_SAFE         0x00004000
 716 \f
 717 /* Special values for the st_other field in the symbol table.  These
 718    are used in an Irix 5 dynamic symbol table.  */
 719
 720 #define STO_DEFAULT             STV_DEFAULT
 721 #define STO_INTERNAL            STV_INTERNAL
 722 #define STO_HIDDEN              STV_HIDDEN
 723 #define STO_PROTECTED           STV_PROTECTED
 724
 725 /* This value is used for a mips16 .text symbol.  */
 726 #define STO_MIPS16              0xf0
 727
 728 /* This bit is used on Irix to indicate a symbol whose definition
 729    is optional - if, at final link time, it cannot be found, no
 730    error message should be produced.  */
 731 #define STO_OPTIONAL            (1 << 2)
 732 /* A macro to examine the STO_OPTIONAL bit.  */
 733 #define ELF_MIPS_IS_OPTIONAL(other)     ((other) & STO_OPTIONAL)
 734 \f
 735 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
 736    relocation entry specifies up to three actual relocations, all at
 737    the same address.  The first relocation which required a symbol
 738    uses the symbol in the r_sym field.  The second relocation which
 739    requires a symbol uses the symbol in the r_ssym field.  If all
 740    three relocations require a symbol, the third one uses a zero
 741    value.  */
 742
 743 /* An entry in a 64 bit SHT_REL section.  */
 744
 745 typedef struct
 746 {
 747   /* Address of relocation.  */
 748   unsigned char r_offset[8];
 749   /* Symbol index.  */
 750   unsigned char r_sym[4];
 751   /* Special symbol.  */
 752   unsigned char r_ssym[1];
 753   /* Third relocation.  */
 754   unsigned char r_type3[1];
 755   /* Second relocation.  */
 756   unsigned char r_type2[1];
 757   /* First relocation.  */
 758   unsigned char r_type[1];
 759 } Elf64_Mips_External_Rel;
 760
 761 typedef struct
 762 {
 763   /* Address of relocation.  */
 764   bfd_vma r_offset;
 765   /* Symbol index.  */
 766   unsigned long r_sym;
 767   /* Special symbol.  */
 768   unsigned char r_ssym;
 769   /* Third relocation.  */
 770   unsigned char r_type3;
 771   /* Second relocation.  */
 772   unsigned char r_type2;
 773   /* First relocation.  */
 774   unsigned char r_type;
 775 } Elf64_Mips_Internal_Rel;
 776
 777 /* An entry in a 64 bit SHT_RELA section.  */
 778
 779 typedef struct
 780 {
 781   /* Address of relocation.  */
 782   unsigned char r_offset[8];
 783   /* Symbol index.  */
 784   unsigned char r_sym[4];
 785   /* Special symbol.  */
 786   unsigned char r_ssym[1];
 787   /* Third relocation.  */
 788   unsigned char r_type3[1];
 789   /* Second relocation.  */
 790   unsigned char r_type2[1];
 791   /* First relocation.  */
 792   unsigned char r_type[1];
 793   /* Addend.  */
 794   unsigned char r_addend[8];
 795 } Elf64_Mips_External_Rela;
 796
 797 typedef struct
 798 {
 799   /* Address of relocation.  */
 800   bfd_vma r_offset;
 801   /* Symbol index.  */
 802   unsigned long r_sym;
 803   /* Special symbol.  */
 804   unsigned char r_ssym;
 805   /* Third relocation.  */
 806   unsigned char r_type3;
 807   /* Second relocation.  */
 808   unsigned char r_type2;
 809   /* First relocation.  */
 810   unsigned char r_type;
 811   /* Addend.  */
 812   bfd_signed_vma r_addend;
 813 } Elf64_Mips_Internal_Rela;
 814
 815 /* MIPS ELF 64 relocation info access macros.  */
 816 #define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
 817 #define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
 818 #define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
 819 #define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
 820
 821 /* Values found in the r_ssym field of a relocation entry.  */
 822
 823 /* No relocation.  */
 824 #define RSS_UNDEF       0
 825
 826 /* Value of GP.  */
 827 #define RSS_GP          1
 828
 829 /* Value of GP in object being relocated.  */
 830 #define RSS_GP0         2
 831
 832 /* Address of location being relocated.  */
 833 #define RSS_LOC         3
 834 \f
 835 /* A SHT_MIPS_OPTIONS section contains a series of options, each of
 836    which starts with this header.  */
 837
 838 typedef struct
 839 {
 840   /* Type of option.  */
 841   unsigned char kind[1];
 842   /* Size of option descriptor, including header.  */
 843   unsigned char size[1];
 844   /* Section index of affected section, or 0 for global option.  */
 845   unsigned char section[2];
 846   /* Information specific to this kind of option.  */
 847   unsigned char info[4];
 848 } Elf_External_Options;
 849
 850 typedef struct
 851 {
 852   /* Type of option.  */
 853   unsigned char kind;
 854   /* Size of option descriptor, including header.  */
 855   unsigned char size;
 856   /* Section index of affected section, or 0 for global option.  */
 857   unsigned short section;
 858   /* Information specific to this kind of option.  */
 859   unsigned long info;
 860 } Elf_Internal_Options;
 861
 862 /* MIPS ELF option header swapping routines.  */
 863 extern void bfd_mips_elf_swap_options_in
 864   (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
 865 extern void bfd_mips_elf_swap_options_out
 866   (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
 867
 868 /* Values which may appear in the kind field of an Elf_Options
 869    structure.  */
 870
 871 /* Undefined.  */
 872 #define ODK_NULL        0
 873
 874 /* Register usage and GP value.  */
 875 #define ODK_REGINFO     1
 876
 877 /* Exception processing information.  */
 878 #define ODK_EXCEPTIONS  2
 879
 880 /* Section padding information.  */
 881 #define ODK_PAD         3
 882
 883 /* Hardware workarounds performed.  */
 884 #define ODK_HWPATCH     4
 885
 886 /* Fill value used by the linker.  */
 887 #define ODK_FILL        5
 888
 889 /* Reserved space for desktop tools.  */
 890 #define ODK_TAGS        6
 891
 892 /* Hardware workarounds, AND bits when merging.  */
 893 #define ODK_HWAND       7
 894
 895 /* Hardware workarounds, OR bits when merging.  */
 896 #define ODK_HWOR        8
 897
 898 /* GP group to use for text/data sections.  */
 899 #define ODK_GP_GROUP    9
 900
 901 /* ID information.  */
 902 #define ODK_IDENT       10
 903
 904 /* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
 905    structure.  In the 64 bit ABI, it is the following structure.  The
 906    info field of the options header is not used.  */
 907
 908 typedef struct
 909 {
 910   /* Mask of general purpose registers used.  */
 911   unsigned char ri_gprmask[4];
 912   /* Padding.  */
 913   unsigned char ri_pad[4];
 914   /* Mask of co-processor registers used.  */
 915   unsigned char ri_cprmask[4][4];
 916   /* GP register value for this object file.  */
 917   unsigned char ri_gp_value[8];
 918 } Elf64_External_RegInfo;
 919
 920 typedef struct
 921 {
 922   /* Mask of general purpose registers used.  */
 923   unsigned long ri_gprmask;
 924   /* Padding.  */
 925   unsigned long ri_pad;
 926   /* Mask of co-processor registers used.  */
 927   unsigned long ri_cprmask[4];
 928   /* GP register value for this object file.  */
 929   bfd_vma ri_gp_value;
 930 } Elf64_Internal_RegInfo;
 931
 932 typedef struct
 933 {
 934   /* The hash value computed from the name of the corresponding
 935      dynamic symbol.  */
 936   unsigned char ms_hash_value[4];
 937   /* Contains both the dynamic relocation index and the symbol flags
 938      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 939      to access the individual values.  The dynamic relocation index
 940      identifies the first entry in the .rel.dyn section that
 941      references the dynamic symbol corresponding to this msym entry.
 942      If the index is 0, no dynamic relocations are associated with the
 943      symbol.  The symbol flags field is reserved for future use.  */
 944   unsigned char ms_info[4];
 945 } Elf32_External_Msym;
 946
 947 typedef struct
 948 {
 949   /* The hash value computed from the name of the corresponding
 950      dynamic symbol.  */
 951   unsigned long ms_hash_value;
 952   /* Contains both the dynamic relocation index and the symbol flags
 953      field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
 954      to access the individual values.  The dynamic relocation index
 955      identifies the first entry in the .rel.dyn section that
 956      references the dynamic symbol corresponding to this msym entry.
 957      If the index is 0, no dynamic relocations are associated with the
 958      symbol.  The symbol flags field is reserved for future use.  */
 959   unsigned long ms_info;
 960 } Elf32_Internal_Msym;
 961
 962 #define ELF32_MS_REL_INDEX(i) ((i) >> 8)
 963 #define ELF32_MS_FLAGS(i)     (i) & 0xff)
 964 #define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
 965
 966 /* MIPS ELF reginfo swapping routines.  */
 967 extern void bfd_mips_elf64_swap_reginfo_in
 968   (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
 969 extern void bfd_mips_elf64_swap_reginfo_out
 970   (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
 971
 972 /* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
 973 #define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
 974 #define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
 975 #define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
 976 #define OEX_SMM         0x20000 /* Force sequential memory mode.  */
 977 #define OEX_FPDBUG      0x40000 /* Force precise floating-point
 978                                    exceptions (debug mode).  */
 979 #define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
 980
 981 /* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
 982 #define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
 983 #define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
 984 #define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
 985 #define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
 986 #define OEX_FPU_INEX    0x01    /* Inexact exception.  */
 987
 988 /* Masks for the info word of an ODK_PAD descriptor.  */
 989 #define OPAD_PREFIX     0x01
 990 #define OPAD_POSTFIX    0x02
 991 #define OPAD_SYMBOL     0x04
 992
 993 /* Masks for the info word of an ODK_HWPATCH descriptor.  */
 994 #define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
 995 #define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
 996 #define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
 997 #define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
 998                                            (clean == 1).  */
 999 #define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
1000                                            load patch. */
1001
1002 /* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
1003 #define OGP_GROUP       0x0000ffff      /* GP group number.  */
1004 #define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
1005
1006 /* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
1007 #define OHWA0_R4KEOP_CHECKED    0x00000001
1008 #define OHWA0_R4KEOP_CLEAN      0x00000002
1009 \f
1010
1011 /* Object attribute tags.  */
1012 enum
1013 {
1014   /* 0-3 are generic.  */
1015   Tag_GNU_MIPS_ABI_FP = 4, /* Value 1 for hard-float -mdouble-float, 2
1016                               for hard-float -msingle-float, 3 for
1017                               soft-float, 4 for -mips32r2 -mfp64; 0 for
1018                               not tagged or not using any ABIs affected
1019                               by the differences.  */
1020 };
1021
1022 #endif /* _ELF_MIPS_H */