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

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