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