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