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1 330 jeremybenn
/* 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
 
226
/* Processor specific section indices.  These sections do not actually
227
   exist.  Symbols with a st_shndx field corresponding to one of these
228
   values have a special meaning.  */
229
 
230
/* Defined and allocated common symbol.  Value is virtual address.  If
231
   relocated, alignment must be preserved.  */
232
#define SHN_MIPS_ACOMMON        SHN_LORESERVE
233
 
234
/* Defined and allocated text symbol.  Value is virtual address.
235
   Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
236
#define SHN_MIPS_TEXT           (SHN_LORESERVE + 1)
237
 
238
/* Defined and allocated data symbol.  Value is virtual address.
239
   Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
240
#define SHN_MIPS_DATA           (SHN_LORESERVE + 2)
241
 
242
/* Small common symbol.  */
243
#define SHN_MIPS_SCOMMON        (SHN_LORESERVE + 3)
244
 
245
/* Small undefined symbol.  */
246
#define SHN_MIPS_SUNDEFINED     (SHN_LORESERVE + 4)
247
 
248
/* Processor specific section types.  */
249
 
250
/* Section contains the set of dynamic shared objects used when
251
   statically linking.  */
252
#define SHT_MIPS_LIBLIST        0x70000000
253
 
254
/* I'm not sure what this is, but it's used on Irix 5.  */
255
#define SHT_MIPS_MSYM           0x70000001
256
 
257
/* Section contains list of symbols whose definitions conflict with
258
   symbols defined in shared objects.  */
259
#define SHT_MIPS_CONFLICT       0x70000002
260
 
261
/* Section contains the global pointer table.  */
262
#define SHT_MIPS_GPTAB          0x70000003
263
 
264
/* Section contains microcode information.  The exact format is
265
   unspecified.  */
266
#define SHT_MIPS_UCODE          0x70000004
267
 
268
/* Section contains some sort of debugging information.  The exact
269
   format is unspecified.  It's probably ECOFF symbols.  */
270
#define SHT_MIPS_DEBUG          0x70000005
271
 
272
/* Section contains register usage information.  */
273
#define SHT_MIPS_REGINFO        0x70000006
274
 
275
/* ??? */
276
#define SHT_MIPS_PACKAGE        0x70000007
277
 
278
/* ??? */
279
#define SHT_MIPS_PACKSYM        0x70000008
280
 
281
/* ??? */
282
#define SHT_MIPS_RELD           0x70000009
283
 
284
/* Section contains interface information.  */
285
#define SHT_MIPS_IFACE          0x7000000b
286
 
287
/* Section contains description of contents of another section.  */
288
#define SHT_MIPS_CONTENT        0x7000000c
289
 
290
/* Section contains miscellaneous options.  */
291
#define SHT_MIPS_OPTIONS        0x7000000d
292
 
293
/* ??? */
294
#define SHT_MIPS_SHDR           0x70000010
295
 
296
/* ??? */
297
#define SHT_MIPS_FDESC          0x70000011
298
 
299
/* ??? */
300
#define SHT_MIPS_EXTSYM         0x70000012
301
 
302
/* ??? */
303
#define SHT_MIPS_DENSE          0x70000013
304
 
305
/* ??? */
306
#define SHT_MIPS_PDESC          0x70000014
307
 
308
/* ??? */
309
#define SHT_MIPS_LOCSYM         0x70000015
310
 
311
/* ??? */
312
#define SHT_MIPS_AUXSYM         0x70000016
313
 
314
/* ??? */
315
#define SHT_MIPS_OPTSYM         0x70000017
316
 
317
/* ??? */
318
#define SHT_MIPS_LOCSTR         0x70000018
319
 
320
/* ??? */
321
#define SHT_MIPS_LINE           0x70000019
322
 
323
/* ??? */
324
#define SHT_MIPS_RFDESC         0x7000001a
325
 
326
/* Delta C++: symbol table */
327
#define SHT_MIPS_DELTASYM       0x7000001b
328
 
329
/* Delta C++: instance table */
330
#define SHT_MIPS_DELTAINST      0x7000001c
331
 
332
/* Delta C++: class table */
333
#define SHT_MIPS_DELTACLASS     0x7000001d
334
 
335
/* DWARF debugging section.  */
336
#define SHT_MIPS_DWARF          0x7000001e
337
 
338
/* Delta C++: declarations */
339
#define SHT_MIPS_DELTADECL      0x7000001f
340
 
341
/* List of libraries the binary depends on.  Includes a time stamp, version
342
   number.  */
343
#define SHT_MIPS_SYMBOL_LIB     0x70000020
344
 
345
/* Events section.  */
346
#define SHT_MIPS_EVENTS         0x70000021
347
 
348
/* ??? */
349
#define SHT_MIPS_TRANSLATE      0x70000022
350
 
351
/* Special pixie sections */
352
#define SHT_MIPS_PIXIE          0x70000023
353
 
354
/* Address translation table (for debug info) */
355
#define SHT_MIPS_XLATE          0x70000024
356
 
357
/* SGI internal address translation table (for debug info) */
358
#define SHT_MIPS_XLATE_DEBUG    0x70000025
359
 
360
/* Intermediate code */
361
#define SHT_MIPS_WHIRL          0x70000026
362
 
363
/* C++ exception handling region info */
364
#define SHT_MIPS_EH_REGION      0x70000027
365
 
366
/* Obsolete address translation table (for debug info) */
367
#define SHT_MIPS_XLATE_OLD      0x70000028
368
 
369
/* Runtime procedure descriptor table exception information (ucode) ??? */
370
#define SHT_MIPS_PDR_EXCEPTION  0x70000029
371
 
372
 
373
/* A section of type SHT_MIPS_LIBLIST contains an array of the
374
   following structure.  The sh_link field is the section index of the
375
   string table.  The sh_info field is the number of entries in the
376
   section.  */
377
typedef struct
378
{
379
  /* String table index for name of shared object.  */
380
  unsigned long l_name;
381
  /* Time stamp.  */
382
  unsigned long l_time_stamp;
383
  /* Checksum of symbol names and common sizes.  */
384
  unsigned long l_checksum;
385
  /* String table index for version.  */
386
  unsigned long l_version;
387
  /* Flags.  */
388
  unsigned long l_flags;
389
} Elf32_Lib;
390
 
391
/* The external version of Elf32_Lib.  */
392
typedef struct
393
{
394
  unsigned char l_name[4];
395
  unsigned char l_time_stamp[4];
396
  unsigned char l_checksum[4];
397
  unsigned char l_version[4];
398
  unsigned char l_flags[4];
399
} Elf32_External_Lib;
400
 
401
/* The l_flags field of an Elf32_Lib structure may contain the
402
   following flags.  */
403
 
404
/* Require an exact match at runtime.  */
405
#define LL_EXACT_MATCH          0x00000001
406
 
407
/* Ignore version incompatibilities at runtime.  */
408
#define LL_IGNORE_INT_VER       0x00000002
409
 
410
/* Require matching minor version number.  */
411
#define LL_REQUIRE_MINOR        0x00000004
412
 
413
/* ??? */
414
#define LL_EXPORTS              0x00000008
415
 
416
/* Delay loading of this library until really needed.  */
417
#define LL_DELAY_LOAD           0x00000010
418
 
419
/* ??? Delta C++ stuff ??? */
420
#define LL_DELTA                0x00000020
421
 
422
 
423
/* A section of type SHT_MIPS_CONFLICT is an array of indices into the
424
   .dynsym section.  Each element has the following type.  */
425
typedef unsigned long Elf32_Conflict;
426
typedef unsigned char Elf32_External_Conflict[4];
427
 
428
typedef unsigned long Elf64_Conflict;
429
typedef unsigned char Elf64_External_Conflict[8];
430
 
431
/* A section of type SHT_MIPS_GPTAB contains information about how
432
   much GP space would be required for different -G arguments.  This
433
   information is only used so that the linker can provide informative
434
   suggestions as to the best -G value to use.  The sh_info field is
435
   the index of the section for which this information applies.  The
436
   contents of the section are an array of the following union.  The
437
   first element uses the gt_header field.  The remaining elements use
438
   the gt_entry field.  */
439
typedef union
440
{
441
  struct
442
    {
443
      /* -G value actually used for this object file.  */
444
      unsigned long gt_current_g_value;
445
      /* Unused.  */
446
      unsigned long gt_unused;
447
    } gt_header;
448
  struct
449
    {
450
      /* If this -G argument has been used...  */
451
      unsigned long gt_g_value;
452
      /* ...this many GP section bytes would be required.  */
453
      unsigned long gt_bytes;
454
    } gt_entry;
455
} Elf32_gptab;
456
 
457
/* The external version of Elf32_gptab.  */
458
 
459
typedef union
460
{
461
  struct
462
    {
463
      unsigned char gt_current_g_value[4];
464
      unsigned char gt_unused[4];
465
    } gt_header;
466
  struct
467
    {
468
      unsigned char gt_g_value[4];
469
      unsigned char gt_bytes[4];
470
    } gt_entry;
471
} Elf32_External_gptab;
472
 
473
/* A section of type SHT_MIPS_REGINFO contains the following
474
   structure.  */
475
typedef struct
476
{
477
  /* Mask of general purpose registers used.  */
478
  unsigned long ri_gprmask;
479
  /* Mask of co-processor registers used.  */
480
  unsigned long ri_cprmask[4];
481
  /* GP register value for this object file.  */
482
  long ri_gp_value;
483
} Elf32_RegInfo;
484
 
485
/* The external version of the Elf_RegInfo structure.  */
486
typedef struct
487
{
488
  unsigned char ri_gprmask[4];
489
  unsigned char ri_cprmask[4][4];
490
  unsigned char ri_gp_value[4];
491
} Elf32_External_RegInfo;
492
 
493
/* MIPS ELF .reginfo swapping routines.  */
494
extern void bfd_mips_elf32_swap_reginfo_in
495
  (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
496
extern void bfd_mips_elf32_swap_reginfo_out
497
  (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
498
 
499
/* Processor specific section flags.  */
500
 
501
/* This section must be in the global data area.  */
502
#define SHF_MIPS_GPREL          0x10000000
503
 
504
/* This section should be merged.  */
505
#define SHF_MIPS_MERGE          0x20000000
506
 
507
/* This section contains address data of size implied by section
508
   element size.  */
509
#define SHF_MIPS_ADDR           0x40000000
510
 
511
/* This section contains string data.  */
512
#define SHF_MIPS_STRING         0x80000000
513
 
514
/* This section may not be stripped.  */
515
#define SHF_MIPS_NOSTRIP        0x08000000
516
 
517
/* This section is local to threads.  */
518
#define SHF_MIPS_LOCAL          0x04000000
519
 
520
/* Linker should generate implicit weak names for this section.  */
521
#define SHF_MIPS_NAMES          0x02000000
522
 
523
/* Section contais text/data which may be replicated in other sections.
524
   Linker should retain only one copy.  */
525
#define SHF_MIPS_NODUPES        0x01000000
526
 
527
/* Processor specific program header types.  */
528
 
529
/* Register usage information.  Identifies one .reginfo section.  */
530
#define PT_MIPS_REGINFO         0x70000000
531
 
532
/* Runtime procedure table.  */
533
#define PT_MIPS_RTPROC          0x70000001
534
 
535
/* .MIPS.options section.  */
536
#define PT_MIPS_OPTIONS         0x70000002
537
 
538
/* Processor specific dynamic array tags.  */
539
 
540
/* 32 bit version number for runtime linker interface.  */
541
#define DT_MIPS_RLD_VERSION     0x70000001
542
 
543
/* Time stamp.  */
544
#define DT_MIPS_TIME_STAMP      0x70000002
545
 
546
/* Checksum of external strings and common sizes.  */
547
#define DT_MIPS_ICHECKSUM       0x70000003
548
 
549
/* Index of version string in string table.  */
550
#define DT_MIPS_IVERSION        0x70000004
551
 
552
/* 32 bits of flags.  */
553
#define DT_MIPS_FLAGS           0x70000005
554
 
555
/* Base address of the segment.  */
556
#define DT_MIPS_BASE_ADDRESS    0x70000006
557
 
558
/* ??? */
559
#define DT_MIPS_MSYM            0x70000007
560
 
561
/* Address of .conflict section.  */
562
#define DT_MIPS_CONFLICT        0x70000008
563
 
564
/* Address of .liblist section.  */
565
#define DT_MIPS_LIBLIST         0x70000009
566
 
567
/* Number of local global offset table entries.  */
568
#define DT_MIPS_LOCAL_GOTNO     0x7000000a
569
 
570
/* Number of entries in the .conflict section.  */
571
#define DT_MIPS_CONFLICTNO      0x7000000b
572
 
573
/* Number of entries in the .liblist section.  */
574
#define DT_MIPS_LIBLISTNO       0x70000010
575
 
576
/* Number of entries in the .dynsym section.  */
577
#define DT_MIPS_SYMTABNO        0x70000011
578
 
579
/* Index of first external dynamic symbol not referenced locally.  */
580
#define DT_MIPS_UNREFEXTNO      0x70000012
581
 
582
/* Index of first dynamic symbol in global offset table.  */
583
#define DT_MIPS_GOTSYM          0x70000013
584
 
585
/* Number of page table entries in global offset table.  */
586
#define DT_MIPS_HIPAGENO        0x70000014
587
 
588
/* Address of run time loader map, used for debugging.  */
589
#define DT_MIPS_RLD_MAP         0x70000016
590
 
591
/* Delta C++ class definition.  */
592
#define DT_MIPS_DELTA_CLASS     0x70000017
593
 
594
/* Number of entries in DT_MIPS_DELTA_CLASS.  */
595
#define DT_MIPS_DELTA_CLASS_NO  0x70000018
596
 
597
/* Delta C++ class instances.  */
598
#define DT_MIPS_DELTA_INSTANCE  0x70000019
599
 
600
/* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
601
#define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
602
 
603
/* Delta relocations.  */
604
#define DT_MIPS_DELTA_RELOC     0x7000001b
605
 
606
/* Number of entries in DT_MIPS_DELTA_RELOC.  */
607
#define DT_MIPS_DELTA_RELOC_NO  0x7000001c
608
 
609
/* Delta symbols that Delta relocations refer to.  */
610
#define DT_MIPS_DELTA_SYM       0x7000001d
611
 
612
/* Number of entries in DT_MIPS_DELTA_SYM.  */
613
#define DT_MIPS_DELTA_SYM_NO    0x7000001e
614
 
615
/* Delta symbols that hold class declarations.  */
616
#define DT_MIPS_DELTA_CLASSSYM  0x70000020
617
 
618
/* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
619
#define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
620
 
621
/* Flags indicating information about C++ flavor.  */
622
#define DT_MIPS_CXX_FLAGS       0x70000022
623
 
624
/* Pixie information (???).  */
625
#define DT_MIPS_PIXIE_INIT      0x70000023
626
 
627
/* Address of .MIPS.symlib */
628
#define DT_MIPS_SYMBOL_LIB      0x70000024
629
 
630
/* The GOT index of the first PTE for a segment */
631
#define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
632
 
633
/* The GOT index of the first PTE for a local symbol */
634
#define DT_MIPS_LOCAL_GOTIDX    0x70000026
635
 
636
/* The GOT index of the first PTE for a hidden symbol */
637
#define DT_MIPS_HIDDEN_GOTIDX   0x70000027
638
 
639
/* The GOT index of the first PTE for a protected symbol */
640
#define DT_MIPS_PROTECTED_GOTIDX        0x70000028
641
 
642
/* Address of `.MIPS.options'.  */
643
#define DT_MIPS_OPTIONS         0x70000029
644
 
645
/* Address of `.interface'.  */
646
#define DT_MIPS_INTERFACE       0x7000002a
647
 
648
/* ??? */
649
#define DT_MIPS_DYNSTR_ALIGN    0x7000002b
650
 
651
/* Size of the .interface section.  */
652
#define DT_MIPS_INTERFACE_SIZE  0x7000002c
653
 
654
/* Size of rld_text_resolve function stored in the GOT.  */
655
#define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
656
 
657
/* Default suffix of DSO to be added by rld on dlopen() calls.  */
658
#define DT_MIPS_PERF_SUFFIX     0x7000002e
659
 
660
/* Size of compact relocation section (O32).  */
661
#define DT_MIPS_COMPACT_SIZE    0x7000002f
662
 
663
/* GP value for auxiliary GOTs.  */
664
#define DT_MIPS_GP_VALUE        0x70000030
665
 
666
/* Address of auxiliary .dynamic.  */
667
#define DT_MIPS_AUX_DYNAMIC     0x70000031
668
 
669
/* Address of the base of the PLTGOT.  */
670
#define DT_MIPS_PLTGOT         0x70000032
671
 
672
/* Points to the base of a writable PLT.  */
673
#define DT_MIPS_RWPLT          0x70000034
674
 
675
/* Flags which may appear in a DT_MIPS_FLAGS entry.  */
676
 
677
/* No flags.  */
678
#define RHF_NONE                0x00000000
679
 
680
/* Uses shortcut pointers.  */
681
#define RHF_QUICKSTART          0x00000001
682
 
683
/* Hash size is not a power of two.  */
684
#define RHF_NOTPOT              0x00000002
685
 
686
/* Ignore LD_LIBRARY_PATH.  */
687
#define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
688
 
689
/* DSO address may not be relocated. */
690
#define RHF_NO_MOVE             0x00000008
691
 
692
/* SGI specific features. */
693
#define RHF_SGI_ONLY            0x00000010
694
 
695
/* Guarantee that .init will finish executing before any non-init
696
   code in DSO is called. */
697
#define RHF_GUARANTEE_INIT         0x00000020
698
 
699
/* Contains Delta C++ code. */
700
#define RHF_DELTA_C_PLUS_PLUS      0x00000040
701
 
702
/* Guarantee that .init will start executing before any non-init
703
   code in DSO is called. */
704
#define RHF_GUARANTEE_START_INIT   0x00000080
705
 
706
/* Generated by pixie. */
707
#define RHF_PIXIE                  0x00000100
708
 
709
/* Delay-load DSO by default. */
710
#define RHF_DEFAULT_DELAY_LOAD     0x00000200
711
 
712
/* Object may be requickstarted */
713
#define RHF_REQUICKSTART           0x00000400
714
 
715
/* Object has been requickstarted */
716
#define RHF_REQUICKSTARTED         0x00000800
717
 
718
/* Generated by cord. */
719
#define RHF_CORD                   0x00001000
720
 
721
/* Object contains no unresolved undef symbols. */
722
#define RHF_NO_UNRES_UNDEF         0x00002000
723
 
724
/* Symbol table is in a safe order. */
725
#define RHF_RLD_ORDER_SAFE         0x00004000
726
 
727
/* Special values for the st_other field in the symbol table.  These
728
   are used in an Irix 5 dynamic symbol table.  */
729
 
730
#define STO_DEFAULT             STV_DEFAULT
731
#define STO_INTERNAL            STV_INTERNAL
732
#define STO_HIDDEN              STV_HIDDEN
733
#define STO_PROTECTED           STV_PROTECTED
734
 
735
/* The MIPS psABI was updated in 2008 with support for PLTs and copy
736
   relocs.  There are therefore two types of nonzero SHN_UNDEF functions:
737
   PLT entries and traditional MIPS lazy binding stubs.  We mark the former
738
   with STO_MIPS_PLT to distinguish them from the latter.  */
739
#define STO_MIPS_PLT            0x8
740
 
741
/* This value is used to mark PIC functions in an object that mixes
742
   PIC and non-PIC.  */
743
#define STO_MIPS_PIC            0x20
744
#define ELF_ST_IS_MIPS_PIC(OTHER) \
745
  (((OTHER) & ~ELF_ST_VISIBILITY (-1)) == STO_MIPS_PIC)
746
#define ELF_ST_SET_MIPS_PIC(OTHER) \
747
  (STO_MIPS_PIC | ELF_ST_VISIBILITY (OTHER))
748
 
749
/* This value is used for a mips16 .text symbol.  */
750
#define STO_MIPS16              0xf0
751
#define ELF_ST_IS_MIPS16(OTHER) (((OTHER) & 0xf0) == STO_MIPS16)
752
#define ELF_ST_SET_MIPS16(OTHER) (((OTHER) & ~0xf0) | STO_MIPS16)
753
 
754
/* This bit is used on Irix to indicate a symbol whose definition
755
   is optional - if, at final link time, it cannot be found, no
756
   error message should be produced.  */
757
#define STO_OPTIONAL            (1 << 2)
758
/* A macro to examine the STO_OPTIONAL bit.  */
759
#define ELF_MIPS_IS_OPTIONAL(other)     ((other) & STO_OPTIONAL)
760
 
761
/* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
762
   relocation entry specifies up to three actual relocations, all at
763
   the same address.  The first relocation which required a symbol
764
   uses the symbol in the r_sym field.  The second relocation which
765
   requires a symbol uses the symbol in the r_ssym field.  If all
766
   three relocations require a symbol, the third one uses a zero
767
   value.  */
768
 
769
/* An entry in a 64 bit SHT_REL section.  */
770
 
771
typedef struct
772
{
773
  /* Address of relocation.  */
774
  unsigned char r_offset[8];
775
  /* Symbol index.  */
776
  unsigned char r_sym[4];
777
  /* Special symbol.  */
778
  unsigned char r_ssym[1];
779
  /* Third relocation.  */
780
  unsigned char r_type3[1];
781
  /* Second relocation.  */
782
  unsigned char r_type2[1];
783
  /* First relocation.  */
784
  unsigned char r_type[1];
785
} Elf64_Mips_External_Rel;
786
 
787
typedef struct
788
{
789
  /* Address of relocation.  */
790
  bfd_vma r_offset;
791
  /* Symbol index.  */
792
  unsigned long r_sym;
793
  /* Special symbol.  */
794
  unsigned char r_ssym;
795
  /* Third relocation.  */
796
  unsigned char r_type3;
797
  /* Second relocation.  */
798
  unsigned char r_type2;
799
  /* First relocation.  */
800
  unsigned char r_type;
801
} Elf64_Mips_Internal_Rel;
802
 
803
/* An entry in a 64 bit SHT_RELA section.  */
804
 
805
typedef struct
806
{
807
  /* Address of relocation.  */
808
  unsigned char r_offset[8];
809
  /* Symbol index.  */
810
  unsigned char r_sym[4];
811
  /* Special symbol.  */
812
  unsigned char r_ssym[1];
813
  /* Third relocation.  */
814
  unsigned char r_type3[1];
815
  /* Second relocation.  */
816
  unsigned char r_type2[1];
817
  /* First relocation.  */
818
  unsigned char r_type[1];
819
  /* Addend.  */
820
  unsigned char r_addend[8];
821
} Elf64_Mips_External_Rela;
822
 
823
typedef struct
824
{
825
  /* Address of relocation.  */
826
  bfd_vma r_offset;
827
  /* Symbol index.  */
828
  unsigned long r_sym;
829
  /* Special symbol.  */
830
  unsigned char r_ssym;
831
  /* Third relocation.  */
832
  unsigned char r_type3;
833
  /* Second relocation.  */
834
  unsigned char r_type2;
835
  /* First relocation.  */
836
  unsigned char r_type;
837
  /* Addend.  */
838
  bfd_signed_vma r_addend;
839
} Elf64_Mips_Internal_Rela;
840
 
841
/* MIPS ELF 64 relocation info access macros.  */
842
#define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
843
#define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
844
#define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
845
#define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
846
 
847
/* Values found in the r_ssym field of a relocation entry.  */
848
 
849
/* No relocation.  */
850
#define RSS_UNDEF       0
851
 
852
/* Value of GP.  */
853
#define RSS_GP          1
854
 
855
/* Value of GP in object being relocated.  */
856
#define RSS_GP0         2
857
 
858
/* Address of location being relocated.  */
859
#define RSS_LOC         3
860
 
861
/* A SHT_MIPS_OPTIONS section contains a series of options, each of
862
   which starts with this header.  */
863
 
864
typedef struct
865
{
866
  /* Type of option.  */
867
  unsigned char kind[1];
868
  /* Size of option descriptor, including header.  */
869
  unsigned char size[1];
870
  /* Section index of affected section, or 0 for global option.  */
871
  unsigned char section[2];
872
  /* Information specific to this kind of option.  */
873
  unsigned char info[4];
874
} Elf_External_Options;
875
 
876
typedef struct
877
{
878
  /* Type of option.  */
879
  unsigned char kind;
880
  /* Size of option descriptor, including header.  */
881
  unsigned char size;
882
  /* Section index of affected section, or 0 for global option.  */
883
  unsigned short section;
884
  /* Information specific to this kind of option.  */
885
  unsigned long info;
886
} Elf_Internal_Options;
887
 
888
/* MIPS ELF option header swapping routines.  */
889
extern void bfd_mips_elf_swap_options_in
890
  (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
891
extern void bfd_mips_elf_swap_options_out
892
  (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
893
 
894
/* Values which may appear in the kind field of an Elf_Options
895
   structure.  */
896
 
897
/* Undefined.  */
898
#define ODK_NULL        0
899
 
900
/* Register usage and GP value.  */
901
#define ODK_REGINFO     1
902
 
903
/* Exception processing information.  */
904
#define ODK_EXCEPTIONS  2
905
 
906
/* Section padding information.  */
907
#define ODK_PAD         3
908
 
909
/* Hardware workarounds performed.  */
910
#define ODK_HWPATCH     4
911
 
912
/* Fill value used by the linker.  */
913
#define ODK_FILL        5
914
 
915
/* Reserved space for desktop tools.  */
916
#define ODK_TAGS        6
917
 
918
/* Hardware workarounds, AND bits when merging.  */
919
#define ODK_HWAND       7
920
 
921
/* Hardware workarounds, OR bits when merging.  */
922
#define ODK_HWOR        8
923
 
924
/* GP group to use for text/data sections.  */
925
#define ODK_GP_GROUP    9
926
 
927
/* ID information.  */
928
#define ODK_IDENT       10
929
 
930
/* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
931
   structure.  In the 64 bit ABI, it is the following structure.  The
932
   info field of the options header is not used.  */
933
 
934
typedef struct
935
{
936
  /* Mask of general purpose registers used.  */
937
  unsigned char ri_gprmask[4];
938
  /* Padding.  */
939
  unsigned char ri_pad[4];
940
  /* Mask of co-processor registers used.  */
941
  unsigned char ri_cprmask[4][4];
942
  /* GP register value for this object file.  */
943
  unsigned char ri_gp_value[8];
944
} Elf64_External_RegInfo;
945
 
946
typedef struct
947
{
948
  /* Mask of general purpose registers used.  */
949
  unsigned long ri_gprmask;
950
  /* Padding.  */
951
  unsigned long ri_pad;
952
  /* Mask of co-processor registers used.  */
953
  unsigned long ri_cprmask[4];
954
  /* GP register value for this object file.  */
955
  bfd_vma ri_gp_value;
956
} Elf64_Internal_RegInfo;
957
 
958
typedef struct
959
{
960
  /* The hash value computed from the name of the corresponding
961
     dynamic symbol.  */
962
  unsigned char ms_hash_value[4];
963
  /* Contains both the dynamic relocation index and the symbol flags
964
     field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
965
     to access the individual values.  The dynamic relocation index
966
     identifies the first entry in the .rel.dyn section that
967
     references the dynamic symbol corresponding to this msym entry.
968
     If the index is 0, no dynamic relocations are associated with the
969
     symbol.  The symbol flags field is reserved for future use.  */
970
  unsigned char ms_info[4];
971
} Elf32_External_Msym;
972
 
973
typedef struct
974
{
975
  /* The hash value computed from the name of the corresponding
976
     dynamic symbol.  */
977
  unsigned long ms_hash_value;
978
  /* Contains both the dynamic relocation index and the symbol flags
979
     field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
980
     to access the individual values.  The dynamic relocation index
981
     identifies the first entry in the .rel.dyn section that
982
     references the dynamic symbol corresponding to this msym entry.
983
     If the index is 0, no dynamic relocations are associated with the
984
     symbol.  The symbol flags field is reserved for future use.  */
985
  unsigned long ms_info;
986
} Elf32_Internal_Msym;
987
 
988
#define ELF32_MS_REL_INDEX(i) ((i) >> 8)
989
#define ELF32_MS_FLAGS(i)     (i) & 0xff)
990
#define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
991
 
992
/* MIPS ELF reginfo swapping routines.  */
993
extern void bfd_mips_elf64_swap_reginfo_in
994
  (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
995
extern void bfd_mips_elf64_swap_reginfo_out
996
  (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
997
 
998
/* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
999
#define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
1000
#define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
1001
#define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
1002
#define OEX_SMM         0x20000 /* Force sequential memory mode.  */
1003
#define OEX_FPDBUG      0x40000 /* Force precise floating-point
1004
                                   exceptions (debug mode).  */
1005
#define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
1006
 
1007
/* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
1008
#define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
1009
#define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
1010
#define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
1011
#define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
1012
#define OEX_FPU_INEX    0x01    /* Inexact exception.  */
1013
 
1014
/* Masks for the info word of an ODK_PAD descriptor.  */
1015
#define OPAD_PREFIX     0x01
1016
#define OPAD_POSTFIX    0x02
1017
#define OPAD_SYMBOL     0x04
1018
 
1019
/* Masks for the info word of an ODK_HWPATCH descriptor.  */
1020
#define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
1021
#define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
1022
#define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
1023
#define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
1024
                                           (clean == 1).  */
1025
#define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
1026
                                           load patch. */
1027
 
1028
/* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
1029
#define OGP_GROUP       0x0000ffff      /* GP group number.  */
1030
#define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
1031
 
1032
/* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
1033
#define OHWA0_R4KEOP_CHECKED    0x00000001
1034
#define OHWA0_R4KEOP_CLEAN      0x00000002
1035
 
1036
 
1037
/* Object attribute tags.  */
1038
enum
1039
{
1040
  /* 0-3 are generic.  */
1041
  Tag_GNU_MIPS_ABI_FP = 4, /* Value 1 for hard-float -mdouble-float, 2
1042
                              for hard-float -msingle-float, 3 for
1043
                              soft-float, 4 for -mips32r2 -mfp64; 0 for
1044
                              not tagged or not using any ABIs affected
1045
                              by the differences.  */
1046
};
1047
 
1048
#endif /* _ELF_MIPS_H */

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