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/* MIPS ELF support for BFD.
2
   Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3
   2003, 2004, 2005, 2008, 2009, 2010
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 3 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,
25
   MA 02110-1301, USA.  */
26
 
27
/* This file holds definitions specific to the MIPS ELF ABI.  Note
28
   that most of this is not actually implemented by BFD.  */
29
 
30
#ifndef _ELF_MIPS_H
31
#define _ELF_MIPS_H
32
 
33
#include "elf/reloc-macros.h"
34
 
35
/* Relocation types.  */
36
START_RELOC_NUMBERS (elf_mips_reloc_type)
37
  RELOC_NUMBER (R_MIPS_NONE, 0)
38
  RELOC_NUMBER (R_MIPS_16, 1)
39
  RELOC_NUMBER (R_MIPS_32, 2)           /* In Elf 64: alias R_MIPS_ADD */
40
  RELOC_NUMBER (R_MIPS_REL32, 3)        /* In Elf 64: alias R_MIPS_REL */
41
  RELOC_NUMBER (R_MIPS_26, 4)
42
  RELOC_NUMBER (R_MIPS_HI16, 5)
43
  RELOC_NUMBER (R_MIPS_LO16, 6)
44
  RELOC_NUMBER (R_MIPS_GPREL16, 7)      /* In Elf 64: alias R_MIPS_GPREL */
45
  RELOC_NUMBER (R_MIPS_LITERAL, 8)
46
  RELOC_NUMBER (R_MIPS_GOT16, 9)        /* In Elf 64: alias R_MIPS_GOT */
47
  RELOC_NUMBER (R_MIPS_PC16, 10)
48
  RELOC_NUMBER (R_MIPS_CALL16, 11)      /* In Elf 64: alias R_MIPS_CALL */
49
  RELOC_NUMBER (R_MIPS_GPREL32, 12)
50
  /* The remaining relocs are defined on Irix, although they are not
51
     in the MIPS ELF ABI.  */
52
  RELOC_NUMBER (R_MIPS_UNUSED1, 13)
53
  RELOC_NUMBER (R_MIPS_UNUSED2, 14)
54
  RELOC_NUMBER (R_MIPS_UNUSED3, 15)
55
  RELOC_NUMBER (R_MIPS_SHIFT5, 16)
56
  RELOC_NUMBER (R_MIPS_SHIFT6, 17)
57
  RELOC_NUMBER (R_MIPS_64, 18)
58
  RELOC_NUMBER (R_MIPS_GOT_DISP, 19)
59
  RELOC_NUMBER (R_MIPS_GOT_PAGE, 20)
60
  RELOC_NUMBER (R_MIPS_GOT_OFST, 21)
61
  RELOC_NUMBER (R_MIPS_GOT_HI16, 22)
62
  RELOC_NUMBER (R_MIPS_GOT_LO16, 23)
63
  RELOC_NUMBER (R_MIPS_SUB, 24)
64
  RELOC_NUMBER (R_MIPS_INSERT_A, 25)
65
  RELOC_NUMBER (R_MIPS_INSERT_B, 26)
66
  RELOC_NUMBER (R_MIPS_DELETE, 27)
67
  RELOC_NUMBER (R_MIPS_HIGHER, 28)
68
  RELOC_NUMBER (R_MIPS_HIGHEST, 29)
69
  RELOC_NUMBER (R_MIPS_CALL_HI16, 30)
70
  RELOC_NUMBER (R_MIPS_CALL_LO16, 31)
71
  RELOC_NUMBER (R_MIPS_SCN_DISP, 32)
72
  RELOC_NUMBER (R_MIPS_REL16, 33)
73
  RELOC_NUMBER (R_MIPS_ADD_IMMEDIATE, 34)
74
  RELOC_NUMBER (R_MIPS_PJUMP, 35)
75
  RELOC_NUMBER (R_MIPS_RELGOT, 36)
76
  RELOC_NUMBER (R_MIPS_JALR, 37)
77
  /* TLS relocations.  */
78
  RELOC_NUMBER (R_MIPS_TLS_DTPMOD32, 38)
79
  RELOC_NUMBER (R_MIPS_TLS_DTPREL32, 39)
80
  RELOC_NUMBER (R_MIPS_TLS_DTPMOD64, 40)
81
  RELOC_NUMBER (R_MIPS_TLS_DTPREL64, 41)
82
  RELOC_NUMBER (R_MIPS_TLS_GD, 42)
83
  RELOC_NUMBER (R_MIPS_TLS_LDM, 43)
84
  RELOC_NUMBER (R_MIPS_TLS_DTPREL_HI16, 44)
85
  RELOC_NUMBER (R_MIPS_TLS_DTPREL_LO16, 45)
86
  RELOC_NUMBER (R_MIPS_TLS_GOTTPREL, 46)
87
  RELOC_NUMBER (R_MIPS_TLS_TPREL32, 47)
88
  RELOC_NUMBER (R_MIPS_TLS_TPREL64, 48)
89
  RELOC_NUMBER (R_MIPS_TLS_TPREL_HI16, 49)
90
  RELOC_NUMBER (R_MIPS_TLS_TPREL_LO16, 50)
91
  RELOC_NUMBER (R_MIPS_GLOB_DAT, 51)
92
  FAKE_RELOC (R_MIPS_max, 52)
93
  /* These relocs are used for the mips16.  */
94
  FAKE_RELOC (R_MIPS16_min, 100)
95
  RELOC_NUMBER (R_MIPS16_26, 100)
96
  RELOC_NUMBER (R_MIPS16_GPREL, 101)
97
  RELOC_NUMBER (R_MIPS16_GOT16, 102)
98
  RELOC_NUMBER (R_MIPS16_CALL16, 103)
99
  RELOC_NUMBER (R_MIPS16_HI16, 104)
100
  RELOC_NUMBER (R_MIPS16_LO16, 105)
101
  FAKE_RELOC (R_MIPS16_max, 106)
102
  /* These relocations are specific to VxWorks.  */
103
  RELOC_NUMBER (R_MIPS_COPY, 126)
104
  RELOC_NUMBER (R_MIPS_JUMP_SLOT, 127)
105
  /* This was a GNU extension used by embedded-PIC.  It was co-opted by
106
     mips-linux for exception-handling data.  It is no longer used, but
107
     should continue to be supported by the linker for backward
108
     compatibility.  (GCC stopped using it in May, 2004.)  */
109
  RELOC_NUMBER (R_MIPS_PC32, 248)
110
  /* FIXME: this relocation is used internally by gas.  */
111
  RELOC_NUMBER (R_MIPS_GNU_REL16_S2, 250)
112
  /* These are GNU extensions to enable C++ vtable garbage collection.  */
113
  RELOC_NUMBER (R_MIPS_GNU_VTINHERIT, 253)
114
  RELOC_NUMBER (R_MIPS_GNU_VTENTRY, 254)
115
END_RELOC_NUMBERS (R_MIPS_maxext)
116
 
117
/* Processor specific flags for the ELF header e_flags field.  */
118
 
119
/* At least one .noreorder directive appears in the source.  */
120
#define EF_MIPS_NOREORDER       0x00000001
121
 
122
/* File contains position independent code.  */
123
#define EF_MIPS_PIC             0x00000002
124
 
125
/* Code in file uses the standard calling sequence for calling
126
   position independent code.  */
127
#define EF_MIPS_CPIC            0x00000004
128
 
129
/* ???  Unknown flag, set in IRIX 6's BSDdup2.o in libbsd.a.  */
130
#define EF_MIPS_XGOT            0x00000008
131
 
132
/* Code in file uses UCODE (obsolete) */
133
#define EF_MIPS_UCODE           0x00000010
134
 
135
/* Code in file uses new ABI (-n32 on Irix 6).  */
136
#define EF_MIPS_ABI2            0x00000020
137
 
138
/* Process the .MIPS.options section first by ld */
139
#define EF_MIPS_OPTIONS_FIRST   0x00000080
140
 
141
/* Architectural Extensions used by this file */
142
#define EF_MIPS_ARCH_ASE        0x0f000000
143
 
144
/* Use MDMX multimedia extensions */
145
#define EF_MIPS_ARCH_ASE_MDMX   0x08000000
146
 
147
/* Use MIPS-16 ISA extensions */
148
#define EF_MIPS_ARCH_ASE_M16    0x04000000
149
 
150
/* Indicates code compiled for a 64-bit machine in 32-bit mode.
151
   (regs are 32-bits wide.) */
152
#define EF_MIPS_32BITMODE       0x00000100
153
 
154
/* Four bit MIPS architecture field.  */
155
#define EF_MIPS_ARCH            0xf0000000
156
 
157
/* -mips1 code.  */
158
#define E_MIPS_ARCH_1           0x00000000
159
 
160
/* -mips2 code.  */
161
#define E_MIPS_ARCH_2           0x10000000
162
 
163
/* -mips3 code.  */
164
#define E_MIPS_ARCH_3           0x20000000
165
 
166
/* -mips4 code.  */
167
#define E_MIPS_ARCH_4           0x30000000
168
 
169
/* -mips5 code.  */
170
#define E_MIPS_ARCH_5           0x40000000
171
 
172
/* -mips32 code.  */
173
#define E_MIPS_ARCH_32          0x50000000
174
 
175
/* -mips64 code.  */
176
#define E_MIPS_ARCH_64          0x60000000
177
 
178
/* -mips32r2 code.  */
179
#define E_MIPS_ARCH_32R2        0x70000000
180
 
181
/* -mips64r2 code.  */
182
#define E_MIPS_ARCH_64R2        0x80000000
183
 
184
/* The ABI of the file.  Also see EF_MIPS_ABI2 above. */
185
#define EF_MIPS_ABI             0x0000F000
186
 
187
/* The original o32 abi. */
188
#define E_MIPS_ABI_O32          0x00001000
189
 
190
/* O32 extended to work on 64 bit architectures */
191
#define E_MIPS_ABI_O64          0x00002000
192
 
193
/* EABI in 32 bit mode */
194
#define E_MIPS_ABI_EABI32       0x00003000
195
 
196
/* EABI in 64 bit mode */
197
#define E_MIPS_ABI_EABI64       0x00004000
198
 
199
 
200
/* Machine variant if we know it.  This field was invented at Cygnus,
201
   but it is hoped that other vendors will adopt it.  If some standard
202
   is developed, this code should be changed to follow it. */
203
 
204
#define EF_MIPS_MACH            0x00FF0000
205
 
206
/* Cygnus is choosing values between 80 and 9F;
207
   00 - 7F should be left for a future standard;
208
   the rest are open. */
209
 
210
#define E_MIPS_MACH_3900        0x00810000
211
#define E_MIPS_MACH_4010        0x00820000
212
#define E_MIPS_MACH_4100        0x00830000
213
#define E_MIPS_MACH_4650        0x00850000
214
#define E_MIPS_MACH_4120        0x00870000
215
#define E_MIPS_MACH_4111        0x00880000
216
#define E_MIPS_MACH_SB1         0x008a0000
217
#define E_MIPS_MACH_OCTEON      0x008b0000
218
#define E_MIPS_MACH_XLR         0x008c0000
219
#define E_MIPS_MACH_OCTEON2     0x008d0000
220
#define E_MIPS_MACH_5400        0x00910000
221
#define E_MIPS_MACH_5500        0x00980000
222
#define E_MIPS_MACH_9000        0x00990000
223
#define E_MIPS_MACH_LS2E        0x00A00000
224
#define E_MIPS_MACH_LS2F        0x00A10000
225
#define E_MIPS_MACH_LS3A        0x00A20000
226
 
227
/* Processor specific section indices.  These sections do not actually
228
   exist.  Symbols with a st_shndx field corresponding to one of these
229
   values have a special meaning.  */
230
 
231
/* Defined and allocated common symbol.  Value is virtual address.  If
232
   relocated, alignment must be preserved.  */
233
#define SHN_MIPS_ACOMMON        SHN_LORESERVE
234
 
235
/* Defined and allocated text symbol.  Value is virtual address.
236
   Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
237
#define SHN_MIPS_TEXT           (SHN_LORESERVE + 1)
238
 
239
/* Defined and allocated data symbol.  Value is virtual address.
240
   Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
241
#define SHN_MIPS_DATA           (SHN_LORESERVE + 2)
242
 
243
/* Small common symbol.  */
244
#define SHN_MIPS_SCOMMON        (SHN_LORESERVE + 3)
245
 
246
/* Small undefined symbol.  */
247
#define SHN_MIPS_SUNDEFINED     (SHN_LORESERVE + 4)
248
 
249
/* Processor specific section types.  */
250
 
251
/* Section contains the set of dynamic shared objects used when
252
   statically linking.  */
253
#define SHT_MIPS_LIBLIST        0x70000000
254
 
255
/* I'm not sure what this is, but it's used on Irix 5.  */
256
#define SHT_MIPS_MSYM           0x70000001
257
 
258
/* Section contains list of symbols whose definitions conflict with
259
   symbols defined in shared objects.  */
260
#define SHT_MIPS_CONFLICT       0x70000002
261
 
262
/* Section contains the global pointer table.  */
263
#define SHT_MIPS_GPTAB          0x70000003
264
 
265
/* Section contains microcode information.  The exact format is
266
   unspecified.  */
267
#define SHT_MIPS_UCODE          0x70000004
268
 
269
/* Section contains some sort of debugging information.  The exact
270
   format is unspecified.  It's probably ECOFF symbols.  */
271
#define SHT_MIPS_DEBUG          0x70000005
272
 
273
/* Section contains register usage information.  */
274
#define SHT_MIPS_REGINFO        0x70000006
275
 
276
/* ??? */
277
#define SHT_MIPS_PACKAGE        0x70000007
278
 
279
/* ??? */
280
#define SHT_MIPS_PACKSYM        0x70000008
281
 
282
/* ??? */
283
#define SHT_MIPS_RELD           0x70000009
284
 
285
/* Section contains interface information.  */
286
#define SHT_MIPS_IFACE          0x7000000b
287
 
288
/* Section contains description of contents of another section.  */
289
#define SHT_MIPS_CONTENT        0x7000000c
290
 
291
/* Section contains miscellaneous options.  */
292
#define SHT_MIPS_OPTIONS        0x7000000d
293
 
294
/* ??? */
295
#define SHT_MIPS_SHDR           0x70000010
296
 
297
/* ??? */
298
#define SHT_MIPS_FDESC          0x70000011
299
 
300
/* ??? */
301
#define SHT_MIPS_EXTSYM         0x70000012
302
 
303
/* ??? */
304
#define SHT_MIPS_DENSE          0x70000013
305
 
306
/* ??? */
307
#define SHT_MIPS_PDESC          0x70000014
308
 
309
/* ??? */
310
#define SHT_MIPS_LOCSYM         0x70000015
311
 
312
/* ??? */
313
#define SHT_MIPS_AUXSYM         0x70000016
314
 
315
/* ??? */
316
#define SHT_MIPS_OPTSYM         0x70000017
317
 
318
/* ??? */
319
#define SHT_MIPS_LOCSTR         0x70000018
320
 
321
/* ??? */
322
#define SHT_MIPS_LINE           0x70000019
323
 
324
/* ??? */
325
#define SHT_MIPS_RFDESC         0x7000001a
326
 
327
/* Delta C++: symbol table */
328
#define SHT_MIPS_DELTASYM       0x7000001b
329
 
330
/* Delta C++: instance table */
331
#define SHT_MIPS_DELTAINST      0x7000001c
332
 
333
/* Delta C++: class table */
334
#define SHT_MIPS_DELTACLASS     0x7000001d
335
 
336
/* DWARF debugging section.  */
337
#define SHT_MIPS_DWARF          0x7000001e
338
 
339
/* Delta C++: declarations */
340
#define SHT_MIPS_DELTADECL      0x7000001f
341
 
342
/* List of libraries the binary depends on.  Includes a time stamp, version
343
   number.  */
344
#define SHT_MIPS_SYMBOL_LIB     0x70000020
345
 
346
/* Events section.  */
347
#define SHT_MIPS_EVENTS         0x70000021
348
 
349
/* ??? */
350
#define SHT_MIPS_TRANSLATE      0x70000022
351
 
352
/* Special pixie sections */
353
#define SHT_MIPS_PIXIE          0x70000023
354
 
355
/* Address translation table (for debug info) */
356
#define SHT_MIPS_XLATE          0x70000024
357
 
358
/* SGI internal address translation table (for debug info) */
359
#define SHT_MIPS_XLATE_DEBUG    0x70000025
360
 
361
/* Intermediate code */
362
#define SHT_MIPS_WHIRL          0x70000026
363
 
364
/* C++ exception handling region info */
365
#define SHT_MIPS_EH_REGION      0x70000027
366
 
367
/* Obsolete address translation table (for debug info) */
368
#define SHT_MIPS_XLATE_OLD      0x70000028
369
 
370
/* Runtime procedure descriptor table exception information (ucode) ??? */
371
#define SHT_MIPS_PDR_EXCEPTION  0x70000029
372
 
373
 
374
/* A section of type SHT_MIPS_LIBLIST contains an array of the
375
   following structure.  The sh_link field is the section index of the
376
   string table.  The sh_info field is the number of entries in the
377
   section.  */
378
typedef struct
379
{
380
  /* String table index for name of shared object.  */
381
  unsigned long l_name;
382
  /* Time stamp.  */
383
  unsigned long l_time_stamp;
384
  /* Checksum of symbol names and common sizes.  */
385
  unsigned long l_checksum;
386
  /* String table index for version.  */
387
  unsigned long l_version;
388
  /* Flags.  */
389
  unsigned long l_flags;
390
} Elf32_Lib;
391
 
392
/* The external version of Elf32_Lib.  */
393
typedef struct
394
{
395
  unsigned char l_name[4];
396
  unsigned char l_time_stamp[4];
397
  unsigned char l_checksum[4];
398
  unsigned char l_version[4];
399
  unsigned char l_flags[4];
400
} Elf32_External_Lib;
401
 
402
/* The l_flags field of an Elf32_Lib structure may contain the
403
   following flags.  */
404
 
405
/* Require an exact match at runtime.  */
406
#define LL_EXACT_MATCH          0x00000001
407
 
408
/* Ignore version incompatibilities at runtime.  */
409
#define LL_IGNORE_INT_VER       0x00000002
410
 
411
/* Require matching minor version number.  */
412
#define LL_REQUIRE_MINOR        0x00000004
413
 
414
/* ??? */
415
#define LL_EXPORTS              0x00000008
416
 
417
/* Delay loading of this library until really needed.  */
418
#define LL_DELAY_LOAD           0x00000010
419
 
420
/* ??? Delta C++ stuff ??? */
421
#define LL_DELTA                0x00000020
422
 
423
 
424
/* A section of type SHT_MIPS_CONFLICT is an array of indices into the
425
   .dynsym section.  Each element has the following type.  */
426
typedef unsigned long Elf32_Conflict;
427
typedef unsigned char Elf32_External_Conflict[4];
428
 
429
typedef unsigned long Elf64_Conflict;
430
typedef unsigned char Elf64_External_Conflict[8];
431
 
432
/* A section of type SHT_MIPS_GPTAB contains information about how
433
   much GP space would be required for different -G arguments.  This
434
   information is only used so that the linker can provide informative
435
   suggestions as to the best -G value to use.  The sh_info field is
436
   the index of the section for which this information applies.  The
437
   contents of the section are an array of the following union.  The
438
   first element uses the gt_header field.  The remaining elements use
439
   the gt_entry field.  */
440
typedef union
441
{
442
  struct
443
    {
444
      /* -G value actually used for this object file.  */
445
      unsigned long gt_current_g_value;
446
      /* Unused.  */
447
      unsigned long gt_unused;
448
    } gt_header;
449
  struct
450
    {
451
      /* If this -G argument has been used...  */
452
      unsigned long gt_g_value;
453
      /* ...this many GP section bytes would be required.  */
454
      unsigned long gt_bytes;
455
    } gt_entry;
456
} Elf32_gptab;
457
 
458
/* The external version of Elf32_gptab.  */
459
 
460
typedef union
461
{
462
  struct
463
    {
464
      unsigned char gt_current_g_value[4];
465
      unsigned char gt_unused[4];
466
    } gt_header;
467
  struct
468
    {
469
      unsigned char gt_g_value[4];
470
      unsigned char gt_bytes[4];
471
    } gt_entry;
472
} Elf32_External_gptab;
473
 
474
/* A section of type SHT_MIPS_REGINFO contains the following
475
   structure.  */
476
typedef struct
477
{
478
  /* Mask of general purpose registers used.  */
479
  unsigned long ri_gprmask;
480
  /* Mask of co-processor registers used.  */
481
  unsigned long ri_cprmask[4];
482
  /* GP register value for this object file.  */
483
  long ri_gp_value;
484
} Elf32_RegInfo;
485
 
486
/* The external version of the Elf_RegInfo structure.  */
487
typedef struct
488
{
489
  unsigned char ri_gprmask[4];
490
  unsigned char ri_cprmask[4][4];
491
  unsigned char ri_gp_value[4];
492
} Elf32_External_RegInfo;
493
 
494
/* MIPS ELF .reginfo swapping routines.  */
495
extern void bfd_mips_elf32_swap_reginfo_in
496
  (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
497
extern void bfd_mips_elf32_swap_reginfo_out
498
  (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
499
 
500
/* Processor specific section flags.  */
501
 
502
/* This section must be in the global data area.  */
503
#define SHF_MIPS_GPREL          0x10000000
504
 
505
/* This section should be merged.  */
506
#define SHF_MIPS_MERGE          0x20000000
507
 
508
/* This section contains address data of size implied by section
509
   element size.  */
510
#define SHF_MIPS_ADDR           0x40000000
511
 
512
/* This section contains string data.  */
513
#define SHF_MIPS_STRING         0x80000000
514
 
515
/* This section may not be stripped.  */
516
#define SHF_MIPS_NOSTRIP        0x08000000
517
 
518
/* This section is local to threads.  */
519
#define SHF_MIPS_LOCAL          0x04000000
520
 
521
/* Linker should generate implicit weak names for this section.  */
522
#define SHF_MIPS_NAMES          0x02000000
523
 
524
/* Section contais text/data which may be replicated in other sections.
525
   Linker should retain only one copy.  */
526
#define SHF_MIPS_NODUPES        0x01000000
527
 
528
/* Processor specific program header types.  */
529
 
530
/* Register usage information.  Identifies one .reginfo section.  */
531
#define PT_MIPS_REGINFO         0x70000000
532
 
533
/* Runtime procedure table.  */
534
#define PT_MIPS_RTPROC          0x70000001
535
 
536
/* .MIPS.options section.  */
537
#define PT_MIPS_OPTIONS         0x70000002
538
 
539
/* Processor specific dynamic array tags.  */
540
 
541
/* 32 bit version number for runtime linker interface.  */
542
#define DT_MIPS_RLD_VERSION     0x70000001
543
 
544
/* Time stamp.  */
545
#define DT_MIPS_TIME_STAMP      0x70000002
546
 
547
/* Checksum of external strings and common sizes.  */
548
#define DT_MIPS_ICHECKSUM       0x70000003
549
 
550
/* Index of version string in string table.  */
551
#define DT_MIPS_IVERSION        0x70000004
552
 
553
/* 32 bits of flags.  */
554
#define DT_MIPS_FLAGS           0x70000005
555
 
556
/* Base address of the segment.  */
557
#define DT_MIPS_BASE_ADDRESS    0x70000006
558
 
559
/* ??? */
560
#define DT_MIPS_MSYM            0x70000007
561
 
562
/* Address of .conflict section.  */
563
#define DT_MIPS_CONFLICT        0x70000008
564
 
565
/* Address of .liblist section.  */
566
#define DT_MIPS_LIBLIST         0x70000009
567
 
568
/* Number of local global offset table entries.  */
569
#define DT_MIPS_LOCAL_GOTNO     0x7000000a
570
 
571
/* Number of entries in the .conflict section.  */
572
#define DT_MIPS_CONFLICTNO      0x7000000b
573
 
574
/* Number of entries in the .liblist section.  */
575
#define DT_MIPS_LIBLISTNO       0x70000010
576
 
577
/* Number of entries in the .dynsym section.  */
578
#define DT_MIPS_SYMTABNO        0x70000011
579
 
580
/* Index of first external dynamic symbol not referenced locally.  */
581
#define DT_MIPS_UNREFEXTNO      0x70000012
582
 
583
/* Index of first dynamic symbol in global offset table.  */
584
#define DT_MIPS_GOTSYM          0x70000013
585
 
586
/* Number of page table entries in global offset table.  */
587
#define DT_MIPS_HIPAGENO        0x70000014
588
 
589
/* Address of run time loader map, used for debugging.  */
590
#define DT_MIPS_RLD_MAP         0x70000016
591
 
592
/* Delta C++ class definition.  */
593
#define DT_MIPS_DELTA_CLASS     0x70000017
594
 
595
/* Number of entries in DT_MIPS_DELTA_CLASS.  */
596
#define DT_MIPS_DELTA_CLASS_NO  0x70000018
597
 
598
/* Delta C++ class instances.  */
599
#define DT_MIPS_DELTA_INSTANCE  0x70000019
600
 
601
/* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
602
#define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
603
 
604
/* Delta relocations.  */
605
#define DT_MIPS_DELTA_RELOC     0x7000001b
606
 
607
/* Number of entries in DT_MIPS_DELTA_RELOC.  */
608
#define DT_MIPS_DELTA_RELOC_NO  0x7000001c
609
 
610
/* Delta symbols that Delta relocations refer to.  */
611
#define DT_MIPS_DELTA_SYM       0x7000001d
612
 
613
/* Number of entries in DT_MIPS_DELTA_SYM.  */
614
#define DT_MIPS_DELTA_SYM_NO    0x7000001e
615
 
616
/* Delta symbols that hold class declarations.  */
617
#define DT_MIPS_DELTA_CLASSSYM  0x70000020
618
 
619
/* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
620
#define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
621
 
622
/* Flags indicating information about C++ flavor.  */
623
#define DT_MIPS_CXX_FLAGS       0x70000022
624
 
625
/* Pixie information (???).  */
626
#define DT_MIPS_PIXIE_INIT      0x70000023
627
 
628
/* Address of .MIPS.symlib */
629
#define DT_MIPS_SYMBOL_LIB      0x70000024
630
 
631
/* The GOT index of the first PTE for a segment */
632
#define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
633
 
634
/* The GOT index of the first PTE for a local symbol */
635
#define DT_MIPS_LOCAL_GOTIDX    0x70000026
636
 
637
/* The GOT index of the first PTE for a hidden symbol */
638
#define DT_MIPS_HIDDEN_GOTIDX   0x70000027
639
 
640
/* The GOT index of the first PTE for a protected symbol */
641
#define DT_MIPS_PROTECTED_GOTIDX        0x70000028
642
 
643
/* Address of `.MIPS.options'.  */
644
#define DT_MIPS_OPTIONS         0x70000029
645
 
646
/* Address of `.interface'.  */
647
#define DT_MIPS_INTERFACE       0x7000002a
648
 
649
/* ??? */
650
#define DT_MIPS_DYNSTR_ALIGN    0x7000002b
651
 
652
/* Size of the .interface section.  */
653
#define DT_MIPS_INTERFACE_SIZE  0x7000002c
654
 
655
/* Size of rld_text_resolve function stored in the GOT.  */
656
#define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
657
 
658
/* Default suffix of DSO to be added by rld on dlopen() calls.  */
659
#define DT_MIPS_PERF_SUFFIX     0x7000002e
660
 
661
/* Size of compact relocation section (O32).  */
662
#define DT_MIPS_COMPACT_SIZE    0x7000002f
663
 
664
/* GP value for auxiliary GOTs.  */
665
#define DT_MIPS_GP_VALUE        0x70000030
666
 
667
/* Address of auxiliary .dynamic.  */
668
#define DT_MIPS_AUX_DYNAMIC     0x70000031
669
 
670
/* Address of the base of the PLTGOT.  */
671
#define DT_MIPS_PLTGOT         0x70000032
672
 
673
/* Points to the base of a writable PLT.  */
674
#define DT_MIPS_RWPLT          0x70000034
675
 
676
/* Flags which may appear in a DT_MIPS_FLAGS entry.  */
677
 
678
/* No flags.  */
679
#define RHF_NONE                0x00000000
680
 
681
/* Uses shortcut pointers.  */
682
#define RHF_QUICKSTART          0x00000001
683
 
684
/* Hash size is not a power of two.  */
685
#define RHF_NOTPOT              0x00000002
686
 
687
/* Ignore LD_LIBRARY_PATH.  */
688
#define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
689
 
690
/* DSO address may not be relocated. */
691
#define RHF_NO_MOVE             0x00000008
692
 
693
/* SGI specific features. */
694
#define RHF_SGI_ONLY            0x00000010
695
 
696
/* Guarantee that .init will finish executing before any non-init
697
   code in DSO is called. */
698
#define RHF_GUARANTEE_INIT         0x00000020
699
 
700
/* Contains Delta C++ code. */
701
#define RHF_DELTA_C_PLUS_PLUS      0x00000040
702
 
703
/* Guarantee that .init will start executing before any non-init
704
   code in DSO is called. */
705
#define RHF_GUARANTEE_START_INIT   0x00000080
706
 
707
/* Generated by pixie. */
708
#define RHF_PIXIE                  0x00000100
709
 
710
/* Delay-load DSO by default. */
711
#define RHF_DEFAULT_DELAY_LOAD     0x00000200
712
 
713
/* Object may be requickstarted */
714
#define RHF_REQUICKSTART           0x00000400
715
 
716
/* Object has been requickstarted */
717
#define RHF_REQUICKSTARTED         0x00000800
718
 
719
/* Generated by cord. */
720
#define RHF_CORD                   0x00001000
721
 
722
/* Object contains no unresolved undef symbols. */
723
#define RHF_NO_UNRES_UNDEF         0x00002000
724
 
725
/* Symbol table is in a safe order. */
726
#define RHF_RLD_ORDER_SAFE         0x00004000
727
 
728
/* Special values for the st_other field in the symbol table.  These
729
   are used in an Irix 5 dynamic symbol table.  */
730
 
731
#define STO_DEFAULT             STV_DEFAULT
732
#define STO_INTERNAL            STV_INTERNAL
733
#define STO_HIDDEN              STV_HIDDEN
734
#define STO_PROTECTED           STV_PROTECTED
735
 
736
/* The MIPS psABI was updated in 2008 with support for PLTs and copy
737
   relocs.  There are therefore two types of nonzero SHN_UNDEF functions:
738
   PLT entries and traditional MIPS lazy binding stubs.  We mark the former
739
   with STO_MIPS_PLT to distinguish them from the latter.  */
740
#define STO_MIPS_PLT            0x8
741
 
742
/* This value is used to mark PIC functions in an object that mixes
743
   PIC and non-PIC.  */
744
#define STO_MIPS_PIC            0x20
745
#define ELF_ST_IS_MIPS_PIC(OTHER) \
746
  (((OTHER) & ~ELF_ST_VISIBILITY (-1)) == STO_MIPS_PIC)
747
#define ELF_ST_SET_MIPS_PIC(OTHER) \
748
  (STO_MIPS_PIC | ELF_ST_VISIBILITY (OTHER))
749
 
750
/* This value is used for a mips16 .text symbol.  */
751
#define STO_MIPS16              0xf0
752
#define ELF_ST_IS_MIPS16(OTHER) (((OTHER) & 0xf0) == STO_MIPS16)
753
#define ELF_ST_SET_MIPS16(OTHER) (((OTHER) & ~0xf0) | STO_MIPS16)
754
 
755
/* This bit is used on Irix to indicate a symbol whose definition
756
   is optional - if, at final link time, it cannot be found, no
757
   error message should be produced.  */
758
#define STO_OPTIONAL            (1 << 2)
759
/* A macro to examine the STO_OPTIONAL bit.  */
760
#define ELF_MIPS_IS_OPTIONAL(other)     ((other) & STO_OPTIONAL)
761
 
762
/* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
763
   relocation entry specifies up to three actual relocations, all at
764
   the same address.  The first relocation which required a symbol
765
   uses the symbol in the r_sym field.  The second relocation which
766
   requires a symbol uses the symbol in the r_ssym field.  If all
767
   three relocations require a symbol, the third one uses a zero
768
   value.  */
769
 
770
/* An entry in a 64 bit SHT_REL section.  */
771
 
772
typedef struct
773
{
774
  /* Address of relocation.  */
775
  unsigned char r_offset[8];
776
  /* Symbol index.  */
777
  unsigned char r_sym[4];
778
  /* Special symbol.  */
779
  unsigned char r_ssym[1];
780
  /* Third relocation.  */
781
  unsigned char r_type3[1];
782
  /* Second relocation.  */
783
  unsigned char r_type2[1];
784
  /* First relocation.  */
785
  unsigned char r_type[1];
786
} Elf64_Mips_External_Rel;
787
 
788
typedef struct
789
{
790
  /* Address of relocation.  */
791
  bfd_vma r_offset;
792
  /* Symbol index.  */
793
  unsigned long r_sym;
794
  /* Special symbol.  */
795
  unsigned char r_ssym;
796
  /* Third relocation.  */
797
  unsigned char r_type3;
798
  /* Second relocation.  */
799
  unsigned char r_type2;
800
  /* First relocation.  */
801
  unsigned char r_type;
802
} Elf64_Mips_Internal_Rel;
803
 
804
/* An entry in a 64 bit SHT_RELA section.  */
805
 
806
typedef struct
807
{
808
  /* Address of relocation.  */
809
  unsigned char r_offset[8];
810
  /* Symbol index.  */
811
  unsigned char r_sym[4];
812
  /* Special symbol.  */
813
  unsigned char r_ssym[1];
814
  /* Third relocation.  */
815
  unsigned char r_type3[1];
816
  /* Second relocation.  */
817
  unsigned char r_type2[1];
818
  /* First relocation.  */
819
  unsigned char r_type[1];
820
  /* Addend.  */
821
  unsigned char r_addend[8];
822
} Elf64_Mips_External_Rela;
823
 
824
typedef struct
825
{
826
  /* Address of relocation.  */
827
  bfd_vma r_offset;
828
  /* Symbol index.  */
829
  unsigned long r_sym;
830
  /* Special symbol.  */
831
  unsigned char r_ssym;
832
  /* Third relocation.  */
833
  unsigned char r_type3;
834
  /* Second relocation.  */
835
  unsigned char r_type2;
836
  /* First relocation.  */
837
  unsigned char r_type;
838
  /* Addend.  */
839
  bfd_signed_vma r_addend;
840
} Elf64_Mips_Internal_Rela;
841
 
842
/* MIPS ELF 64 relocation info access macros.  */
843
#define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
844
#define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
845
#define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
846
#define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
847
 
848
/* Values found in the r_ssym field of a relocation entry.  */
849
 
850
/* No relocation.  */
851
#define RSS_UNDEF       0
852
 
853
/* Value of GP.  */
854
#define RSS_GP          1
855
 
856
/* Value of GP in object being relocated.  */
857
#define RSS_GP0         2
858
 
859
/* Address of location being relocated.  */
860
#define RSS_LOC         3
861
 
862
/* A SHT_MIPS_OPTIONS section contains a series of options, each of
863
   which starts with this header.  */
864
 
865
typedef struct
866
{
867
  /* Type of option.  */
868
  unsigned char kind[1];
869
  /* Size of option descriptor, including header.  */
870
  unsigned char size[1];
871
  /* Section index of affected section, or 0 for global option.  */
872
  unsigned char section[2];
873
  /* Information specific to this kind of option.  */
874
  unsigned char info[4];
875
} Elf_External_Options;
876
 
877
typedef struct
878
{
879
  /* Type of option.  */
880
  unsigned char kind;
881
  /* Size of option descriptor, including header.  */
882
  unsigned char size;
883
  /* Section index of affected section, or 0 for global option.  */
884
  unsigned short section;
885
  /* Information specific to this kind of option.  */
886
  unsigned long info;
887
} Elf_Internal_Options;
888
 
889
/* MIPS ELF option header swapping routines.  */
890
extern void bfd_mips_elf_swap_options_in
891
  (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
892
extern void bfd_mips_elf_swap_options_out
893
  (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
894
 
895
/* Values which may appear in the kind field of an Elf_Options
896
   structure.  */
897
 
898
/* Undefined.  */
899
#define ODK_NULL        0
900
 
901
/* Register usage and GP value.  */
902
#define ODK_REGINFO     1
903
 
904
/* Exception processing information.  */
905
#define ODK_EXCEPTIONS  2
906
 
907
/* Section padding information.  */
908
#define ODK_PAD         3
909
 
910
/* Hardware workarounds performed.  */
911
#define ODK_HWPATCH     4
912
 
913
/* Fill value used by the linker.  */
914
#define ODK_FILL        5
915
 
916
/* Reserved space for desktop tools.  */
917
#define ODK_TAGS        6
918
 
919
/* Hardware workarounds, AND bits when merging.  */
920
#define ODK_HWAND       7
921
 
922
/* Hardware workarounds, OR bits when merging.  */
923
#define ODK_HWOR        8
924
 
925
/* GP group to use for text/data sections.  */
926
#define ODK_GP_GROUP    9
927
 
928
/* ID information.  */
929
#define ODK_IDENT       10
930
 
931
/* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
932
   structure.  In the 64 bit ABI, it is the following structure.  The
933
   info field of the options header is not used.  */
934
 
935
typedef struct
936
{
937
  /* Mask of general purpose registers used.  */
938
  unsigned char ri_gprmask[4];
939
  /* Padding.  */
940
  unsigned char ri_pad[4];
941
  /* Mask of co-processor registers used.  */
942
  unsigned char ri_cprmask[4][4];
943
  /* GP register value for this object file.  */
944
  unsigned char ri_gp_value[8];
945
} Elf64_External_RegInfo;
946
 
947
typedef struct
948
{
949
  /* Mask of general purpose registers used.  */
950
  unsigned long ri_gprmask;
951
  /* Padding.  */
952
  unsigned long ri_pad;
953
  /* Mask of co-processor registers used.  */
954
  unsigned long ri_cprmask[4];
955
  /* GP register value for this object file.  */
956
  bfd_vma ri_gp_value;
957
} Elf64_Internal_RegInfo;
958
 
959
typedef struct
960
{
961
  /* The hash value computed from the name of the corresponding
962
     dynamic symbol.  */
963
  unsigned char ms_hash_value[4];
964
  /* Contains both the dynamic relocation index and the symbol flags
965
     field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
966
     to access the individual values.  The dynamic relocation index
967
     identifies the first entry in the .rel.dyn section that
968
     references the dynamic symbol corresponding to this msym entry.
969
     If the index is 0, no dynamic relocations are associated with the
970
     symbol.  The symbol flags field is reserved for future use.  */
971
  unsigned char ms_info[4];
972
} Elf32_External_Msym;
973
 
974
typedef struct
975
{
976
  /* The hash value computed from the name of the corresponding
977
     dynamic symbol.  */
978
  unsigned long ms_hash_value;
979
  /* Contains both the dynamic relocation index and the symbol flags
980
     field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
981
     to access the individual values.  The dynamic relocation index
982
     identifies the first entry in the .rel.dyn section that
983
     references the dynamic symbol corresponding to this msym entry.
984
     If the index is 0, no dynamic relocations are associated with the
985
     symbol.  The symbol flags field is reserved for future use.  */
986
  unsigned long ms_info;
987
} Elf32_Internal_Msym;
988
 
989
#define ELF32_MS_REL_INDEX(i) ((i) >> 8)
990
#define ELF32_MS_FLAGS(i)     (i) & 0xff)
991
#define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
992
 
993
/* MIPS ELF reginfo swapping routines.  */
994
extern void bfd_mips_elf64_swap_reginfo_in
995
  (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
996
extern void bfd_mips_elf64_swap_reginfo_out
997
  (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
998
 
999
/* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
1000
#define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
1001
#define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
1002
#define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
1003
#define OEX_SMM         0x20000 /* Force sequential memory mode.  */
1004
#define OEX_FPDBUG      0x40000 /* Force precise floating-point
1005
                                   exceptions (debug mode).  */
1006
#define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
1007
 
1008
/* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
1009
#define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
1010
#define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
1011
#define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
1012
#define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
1013
#define OEX_FPU_INEX    0x01    /* Inexact exception.  */
1014
 
1015
/* Masks for the info word of an ODK_PAD descriptor.  */
1016
#define OPAD_PREFIX     0x01
1017
#define OPAD_POSTFIX    0x02
1018
#define OPAD_SYMBOL     0x04
1019
 
1020
/* Masks for the info word of an ODK_HWPATCH descriptor.  */
1021
#define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
1022
#define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
1023
#define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
1024
#define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
1025
                                           (clean == 1).  */
1026
#define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
1027
                                           load patch. */
1028
 
1029
/* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
1030
#define OGP_GROUP       0x0000ffff      /* GP group number.  */
1031
#define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
1032
 
1033
/* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
1034
#define OHWA0_R4KEOP_CHECKED    0x00000001
1035
#define OHWA0_R4KEOP_CLEAN      0x00000002
1036
 
1037
 
1038
/* Object attribute tags.  */
1039
enum
1040
{
1041
  /* 0-3 are generic.  */
1042
  Tag_GNU_MIPS_ABI_FP = 4, /* Value 1 for hard-float -mdouble-float, 2
1043
                              for hard-float -msingle-float, 3 for
1044
                              soft-float, 4 for -mips32r2 -mfp64; 0 for
1045
                              not tagged or not using any ABIs affected
1046
                              by the differences.  */
1047
};
1048
 
1049
#endif /* _ELF_MIPS_H */

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