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1 24 jeremybenn
/* MIPS ELF support for BFD.
2
   Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 225 jeremybenn
   2003, 2004, 2005, 2008, 2009
4 24 jeremybenn
   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
217 225 jeremybenn
#define E_MIPS_MACH_XLR         0x008c0000
218 24 jeremybenn
#define E_MIPS_MACH_5400        0x00910000
219
#define E_MIPS_MACH_5500        0x00980000
220
#define E_MIPS_MACH_9000        0x00990000
221
#define E_MIPS_MACH_LS2E        0x00A00000
222
#define E_MIPS_MACH_LS2F        0x00A10000
223
 
224
/* Processor specific section indices.  These sections do not actually
225
   exist.  Symbols with a st_shndx field corresponding to one of these
226
   values have a special meaning.  */
227
 
228
/* Defined and allocated common symbol.  Value is virtual address.  If
229
   relocated, alignment must be preserved.  */
230 225 jeremybenn
#define SHN_MIPS_ACOMMON        SHN_LORESERVE
231 24 jeremybenn
 
232
/* Defined and allocated text symbol.  Value is virtual address.
233
   Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
234 225 jeremybenn
#define SHN_MIPS_TEXT           (SHN_LORESERVE + 1)
235 24 jeremybenn
 
236
/* Defined and allocated data symbol.  Value is virtual address.
237
   Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
238 225 jeremybenn
#define SHN_MIPS_DATA           (SHN_LORESERVE + 2)
239 24 jeremybenn
 
240
/* Small common symbol.  */
241 225 jeremybenn
#define SHN_MIPS_SCOMMON        (SHN_LORESERVE + 3)
242 24 jeremybenn
 
243
/* Small undefined symbol.  */
244 225 jeremybenn
#define SHN_MIPS_SUNDEFINED     (SHN_LORESERVE + 4)
245 24 jeremybenn
 
246
/* Processor specific section types.  */
247
 
248
/* Section contains the set of dynamic shared objects used when
249
   statically linking.  */
250
#define SHT_MIPS_LIBLIST        0x70000000
251
 
252
/* I'm not sure what this is, but it's used on Irix 5.  */
253
#define SHT_MIPS_MSYM           0x70000001
254
 
255
/* Section contains list of symbols whose definitions conflict with
256
   symbols defined in shared objects.  */
257
#define SHT_MIPS_CONFLICT       0x70000002
258
 
259
/* Section contains the global pointer table.  */
260
#define SHT_MIPS_GPTAB          0x70000003
261
 
262
/* Section contains microcode information.  The exact format is
263
   unspecified.  */
264
#define SHT_MIPS_UCODE          0x70000004
265
 
266
/* Section contains some sort of debugging information.  The exact
267
   format is unspecified.  It's probably ECOFF symbols.  */
268
#define SHT_MIPS_DEBUG          0x70000005
269
 
270
/* Section contains register usage information.  */
271
#define SHT_MIPS_REGINFO        0x70000006
272
 
273
/* ??? */
274
#define SHT_MIPS_PACKAGE        0x70000007
275
 
276
/* ??? */
277
#define SHT_MIPS_PACKSYM        0x70000008
278
 
279
/* ??? */
280
#define SHT_MIPS_RELD           0x70000009
281
 
282
/* Section contains interface information.  */
283
#define SHT_MIPS_IFACE          0x7000000b
284
 
285
/* Section contains description of contents of another section.  */
286
#define SHT_MIPS_CONTENT        0x7000000c
287
 
288
/* Section contains miscellaneous options.  */
289
#define SHT_MIPS_OPTIONS        0x7000000d
290
 
291
/* ??? */
292
#define SHT_MIPS_SHDR           0x70000010
293
 
294
/* ??? */
295
#define SHT_MIPS_FDESC          0x70000011
296
 
297
/* ??? */
298
#define SHT_MIPS_EXTSYM         0x70000012
299
 
300
/* ??? */
301
#define SHT_MIPS_DENSE          0x70000013
302
 
303
/* ??? */
304
#define SHT_MIPS_PDESC          0x70000014
305
 
306
/* ??? */
307
#define SHT_MIPS_LOCSYM         0x70000015
308
 
309
/* ??? */
310
#define SHT_MIPS_AUXSYM         0x70000016
311
 
312
/* ??? */
313
#define SHT_MIPS_OPTSYM         0x70000017
314
 
315
/* ??? */
316
#define SHT_MIPS_LOCSTR         0x70000018
317
 
318
/* ??? */
319
#define SHT_MIPS_LINE           0x70000019
320
 
321
/* ??? */
322
#define SHT_MIPS_RFDESC         0x7000001a
323
 
324
/* Delta C++: symbol table */
325
#define SHT_MIPS_DELTASYM       0x7000001b
326
 
327
/* Delta C++: instance table */
328
#define SHT_MIPS_DELTAINST      0x7000001c
329
 
330
/* Delta C++: class table */
331
#define SHT_MIPS_DELTACLASS     0x7000001d
332
 
333
/* DWARF debugging section.  */
334
#define SHT_MIPS_DWARF          0x7000001e
335
 
336
/* Delta C++: declarations */
337
#define SHT_MIPS_DELTADECL      0x7000001f
338
 
339
/* List of libraries the binary depends on.  Includes a time stamp, version
340
   number.  */
341
#define SHT_MIPS_SYMBOL_LIB     0x70000020
342
 
343
/* Events section.  */
344
#define SHT_MIPS_EVENTS         0x70000021
345
 
346
/* ??? */
347
#define SHT_MIPS_TRANSLATE      0x70000022
348
 
349
/* Special pixie sections */
350
#define SHT_MIPS_PIXIE          0x70000023
351
 
352
/* Address translation table (for debug info) */
353
#define SHT_MIPS_XLATE          0x70000024
354
 
355
/* SGI internal address translation table (for debug info) */
356
#define SHT_MIPS_XLATE_DEBUG    0x70000025
357
 
358
/* Intermediate code */
359
#define SHT_MIPS_WHIRL          0x70000026
360
 
361
/* C++ exception handling region info */
362
#define SHT_MIPS_EH_REGION      0x70000027
363
 
364
/* Obsolete address translation table (for debug info) */
365
#define SHT_MIPS_XLATE_OLD      0x70000028
366
 
367
/* Runtime procedure descriptor table exception information (ucode) ??? */
368
#define SHT_MIPS_PDR_EXCEPTION  0x70000029
369
 
370
 
371
/* A section of type SHT_MIPS_LIBLIST contains an array of the
372
   following structure.  The sh_link field is the section index of the
373
   string table.  The sh_info field is the number of entries in the
374
   section.  */
375
typedef struct
376
{
377
  /* String table index for name of shared object.  */
378
  unsigned long l_name;
379
  /* Time stamp.  */
380
  unsigned long l_time_stamp;
381
  /* Checksum of symbol names and common sizes.  */
382
  unsigned long l_checksum;
383
  /* String table index for version.  */
384
  unsigned long l_version;
385
  /* Flags.  */
386
  unsigned long l_flags;
387
} Elf32_Lib;
388
 
389
/* The external version of Elf32_Lib.  */
390
typedef struct
391
{
392
  unsigned char l_name[4];
393
  unsigned char l_time_stamp[4];
394
  unsigned char l_checksum[4];
395
  unsigned char l_version[4];
396
  unsigned char l_flags[4];
397
} Elf32_External_Lib;
398
 
399
/* The l_flags field of an Elf32_Lib structure may contain the
400
   following flags.  */
401
 
402
/* Require an exact match at runtime.  */
403
#define LL_EXACT_MATCH          0x00000001
404
 
405
/* Ignore version incompatibilities at runtime.  */
406
#define LL_IGNORE_INT_VER       0x00000002
407
 
408
/* Require matching minor version number.  */
409
#define LL_REQUIRE_MINOR        0x00000004
410
 
411
/* ??? */
412
#define LL_EXPORTS              0x00000008
413
 
414
/* Delay loading of this library until really needed.  */
415
#define LL_DELAY_LOAD           0x00000010
416
 
417
/* ??? Delta C++ stuff ??? */
418
#define LL_DELTA                0x00000020
419
 
420
 
421
/* A section of type SHT_MIPS_CONFLICT is an array of indices into the
422
   .dynsym section.  Each element has the following type.  */
423
typedef unsigned long Elf32_Conflict;
424
typedef unsigned char Elf32_External_Conflict[4];
425
 
426
typedef unsigned long Elf64_Conflict;
427
typedef unsigned char Elf64_External_Conflict[8];
428
 
429
/* A section of type SHT_MIPS_GPTAB contains information about how
430
   much GP space would be required for different -G arguments.  This
431
   information is only used so that the linker can provide informative
432
   suggestions as to the best -G value to use.  The sh_info field is
433
   the index of the section for which this information applies.  The
434
   contents of the section are an array of the following union.  The
435
   first element uses the gt_header field.  The remaining elements use
436
   the gt_entry field.  */
437
typedef union
438
{
439
  struct
440
    {
441
      /* -G value actually used for this object file.  */
442
      unsigned long gt_current_g_value;
443
      /* Unused.  */
444
      unsigned long gt_unused;
445
    } gt_header;
446
  struct
447
    {
448
      /* If this -G argument has been used...  */
449
      unsigned long gt_g_value;
450
      /* ...this many GP section bytes would be required.  */
451
      unsigned long gt_bytes;
452
    } gt_entry;
453
} Elf32_gptab;
454
 
455
/* The external version of Elf32_gptab.  */
456
 
457
typedef union
458
{
459
  struct
460
    {
461
      unsigned char gt_current_g_value[4];
462
      unsigned char gt_unused[4];
463
    } gt_header;
464
  struct
465
    {
466
      unsigned char gt_g_value[4];
467
      unsigned char gt_bytes[4];
468
    } gt_entry;
469
} Elf32_External_gptab;
470
 
471
/* A section of type SHT_MIPS_REGINFO contains the following
472
   structure.  */
473
typedef struct
474
{
475
  /* Mask of general purpose registers used.  */
476
  unsigned long ri_gprmask;
477
  /* Mask of co-processor registers used.  */
478
  unsigned long ri_cprmask[4];
479
  /* GP register value for this object file.  */
480
  long ri_gp_value;
481
} Elf32_RegInfo;
482
 
483
/* The external version of the Elf_RegInfo structure.  */
484
typedef struct
485
{
486
  unsigned char ri_gprmask[4];
487
  unsigned char ri_cprmask[4][4];
488
  unsigned char ri_gp_value[4];
489
} Elf32_External_RegInfo;
490
 
491
/* MIPS ELF .reginfo swapping routines.  */
492
extern void bfd_mips_elf32_swap_reginfo_in
493
  (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
494
extern void bfd_mips_elf32_swap_reginfo_out
495
  (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
496
 
497
/* Processor specific section flags.  */
498
 
499
/* This section must be in the global data area.  */
500
#define SHF_MIPS_GPREL          0x10000000
501
 
502
/* This section should be merged.  */
503
#define SHF_MIPS_MERGE          0x20000000
504
 
505
/* This section contains address data of size implied by section
506
   element size.  */
507
#define SHF_MIPS_ADDR           0x40000000
508
 
509
/* This section contains string data.  */
510
#define SHF_MIPS_STRING         0x80000000
511
 
512
/* This section may not be stripped.  */
513
#define SHF_MIPS_NOSTRIP        0x08000000
514
 
515
/* This section is local to threads.  */
516
#define SHF_MIPS_LOCAL          0x04000000
517
 
518
/* Linker should generate implicit weak names for this section.  */
519
#define SHF_MIPS_NAMES          0x02000000
520
 
521
/* Section contais text/data which may be replicated in other sections.
522
   Linker should retain only one copy.  */
523
#define SHF_MIPS_NODUPES        0x01000000
524
 
525
/* Processor specific program header types.  */
526
 
527
/* Register usage information.  Identifies one .reginfo section.  */
528
#define PT_MIPS_REGINFO         0x70000000
529
 
530
/* Runtime procedure table.  */
531
#define PT_MIPS_RTPROC          0x70000001
532
 
533
/* .MIPS.options section.  */
534
#define PT_MIPS_OPTIONS         0x70000002
535
 
536
/* Processor specific dynamic array tags.  */
537
 
538
/* 32 bit version number for runtime linker interface.  */
539
#define DT_MIPS_RLD_VERSION     0x70000001
540
 
541
/* Time stamp.  */
542
#define DT_MIPS_TIME_STAMP      0x70000002
543
 
544
/* Checksum of external strings and common sizes.  */
545
#define DT_MIPS_ICHECKSUM       0x70000003
546
 
547
/* Index of version string in string table.  */
548
#define DT_MIPS_IVERSION        0x70000004
549
 
550
/* 32 bits of flags.  */
551
#define DT_MIPS_FLAGS           0x70000005
552
 
553
/* Base address of the segment.  */
554
#define DT_MIPS_BASE_ADDRESS    0x70000006
555
 
556
/* ??? */
557
#define DT_MIPS_MSYM            0x70000007
558
 
559
/* Address of .conflict section.  */
560
#define DT_MIPS_CONFLICT        0x70000008
561
 
562
/* Address of .liblist section.  */
563
#define DT_MIPS_LIBLIST         0x70000009
564
 
565
/* Number of local global offset table entries.  */
566
#define DT_MIPS_LOCAL_GOTNO     0x7000000a
567
 
568
/* Number of entries in the .conflict section.  */
569
#define DT_MIPS_CONFLICTNO      0x7000000b
570
 
571
/* Number of entries in the .liblist section.  */
572
#define DT_MIPS_LIBLISTNO       0x70000010
573
 
574
/* Number of entries in the .dynsym section.  */
575
#define DT_MIPS_SYMTABNO        0x70000011
576
 
577
/* Index of first external dynamic symbol not referenced locally.  */
578
#define DT_MIPS_UNREFEXTNO      0x70000012
579
 
580
/* Index of first dynamic symbol in global offset table.  */
581
#define DT_MIPS_GOTSYM          0x70000013
582
 
583
/* Number of page table entries in global offset table.  */
584
#define DT_MIPS_HIPAGENO        0x70000014
585
 
586
/* Address of run time loader map, used for debugging.  */
587
#define DT_MIPS_RLD_MAP         0x70000016
588
 
589
/* Delta C++ class definition.  */
590
#define DT_MIPS_DELTA_CLASS     0x70000017
591
 
592
/* Number of entries in DT_MIPS_DELTA_CLASS.  */
593
#define DT_MIPS_DELTA_CLASS_NO  0x70000018
594
 
595
/* Delta C++ class instances.  */
596
#define DT_MIPS_DELTA_INSTANCE  0x70000019
597
 
598
/* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
599
#define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
600
 
601
/* Delta relocations.  */
602
#define DT_MIPS_DELTA_RELOC     0x7000001b
603
 
604
/* Number of entries in DT_MIPS_DELTA_RELOC.  */
605
#define DT_MIPS_DELTA_RELOC_NO  0x7000001c
606
 
607
/* Delta symbols that Delta relocations refer to.  */
608
#define DT_MIPS_DELTA_SYM       0x7000001d
609
 
610
/* Number of entries in DT_MIPS_DELTA_SYM.  */
611
#define DT_MIPS_DELTA_SYM_NO    0x7000001e
612
 
613
/* Delta symbols that hold class declarations.  */
614
#define DT_MIPS_DELTA_CLASSSYM  0x70000020
615
 
616
/* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
617
#define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
618
 
619
/* Flags indicating information about C++ flavor.  */
620
#define DT_MIPS_CXX_FLAGS       0x70000022
621
 
622
/* Pixie information (???).  */
623
#define DT_MIPS_PIXIE_INIT      0x70000023
624
 
625
/* Address of .MIPS.symlib */
626
#define DT_MIPS_SYMBOL_LIB      0x70000024
627
 
628
/* The GOT index of the first PTE for a segment */
629
#define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
630
 
631
/* The GOT index of the first PTE for a local symbol */
632
#define DT_MIPS_LOCAL_GOTIDX    0x70000026
633
 
634
/* The GOT index of the first PTE for a hidden symbol */
635
#define DT_MIPS_HIDDEN_GOTIDX   0x70000027
636
 
637
/* The GOT index of the first PTE for a protected symbol */
638
#define DT_MIPS_PROTECTED_GOTIDX        0x70000028
639
 
640
/* Address of `.MIPS.options'.  */
641
#define DT_MIPS_OPTIONS         0x70000029
642
 
643
/* Address of `.interface'.  */
644
#define DT_MIPS_INTERFACE       0x7000002a
645
 
646
/* ??? */
647
#define DT_MIPS_DYNSTR_ALIGN    0x7000002b
648
 
649
/* Size of the .interface section.  */
650
#define DT_MIPS_INTERFACE_SIZE  0x7000002c
651
 
652
/* Size of rld_text_resolve function stored in the GOT.  */
653
#define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
654
 
655
/* Default suffix of DSO to be added by rld on dlopen() calls.  */
656
#define DT_MIPS_PERF_SUFFIX     0x7000002e
657
 
658
/* Size of compact relocation section (O32).  */
659
#define DT_MIPS_COMPACT_SIZE    0x7000002f
660
 
661
/* GP value for auxiliary GOTs.  */
662
#define DT_MIPS_GP_VALUE        0x70000030
663
 
664
/* Address of auxiliary .dynamic.  */
665
#define DT_MIPS_AUX_DYNAMIC     0x70000031
666 225 jeremybenn
 
667
/* Address of the base of the PLTGOT.  */
668
#define DT_MIPS_PLTGOT         0x70000032
669
 
670
/* Points to the base of a writable PLT.  */
671
#define DT_MIPS_RWPLT          0x70000034
672 24 jeremybenn
 
673
/* Flags which may appear in a DT_MIPS_FLAGS entry.  */
674
 
675
/* No flags.  */
676
#define RHF_NONE                0x00000000
677
 
678
/* Uses shortcut pointers.  */
679
#define RHF_QUICKSTART          0x00000001
680
 
681
/* Hash size is not a power of two.  */
682
#define RHF_NOTPOT              0x00000002
683
 
684
/* Ignore LD_LIBRARY_PATH.  */
685
#define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
686
 
687
/* DSO address may not be relocated. */
688
#define RHF_NO_MOVE             0x00000008
689
 
690
/* SGI specific features. */
691
#define RHF_SGI_ONLY            0x00000010
692
 
693
/* Guarantee that .init will finish executing before any non-init
694
   code in DSO is called. */
695
#define RHF_GUARANTEE_INIT         0x00000020
696
 
697
/* Contains Delta C++ code. */
698
#define RHF_DELTA_C_PLUS_PLUS      0x00000040
699
 
700
/* Guarantee that .init will start executing before any non-init
701
   code in DSO is called. */
702
#define RHF_GUARANTEE_START_INIT   0x00000080
703
 
704
/* Generated by pixie. */
705
#define RHF_PIXIE                  0x00000100
706
 
707
/* Delay-load DSO by default. */
708
#define RHF_DEFAULT_DELAY_LOAD     0x00000200
709
 
710
/* Object may be requickstarted */
711
#define RHF_REQUICKSTART           0x00000400
712
 
713
/* Object has been requickstarted */
714
#define RHF_REQUICKSTARTED         0x00000800
715
 
716
/* Generated by cord. */
717
#define RHF_CORD                   0x00001000
718
 
719
/* Object contains no unresolved undef symbols. */
720
#define RHF_NO_UNRES_UNDEF         0x00002000
721
 
722
/* Symbol table is in a safe order. */
723
#define RHF_RLD_ORDER_SAFE         0x00004000
724
 
725
/* Special values for the st_other field in the symbol table.  These
726
   are used in an Irix 5 dynamic symbol table.  */
727
 
728
#define STO_DEFAULT             STV_DEFAULT
729
#define STO_INTERNAL            STV_INTERNAL
730
#define STO_HIDDEN              STV_HIDDEN
731
#define STO_PROTECTED           STV_PROTECTED
732
 
733 225 jeremybenn
/* The MIPS psABI was updated in 2008 with support for PLTs and copy
734
   relocs.  There are therefore two types of nonzero SHN_UNDEF functions:
735
   PLT entries and traditional MIPS lazy binding stubs.  We mark the former
736
   with STO_MIPS_PLT to distinguish them from the latter.  */
737
#define STO_MIPS_PLT            0x8
738
 
739
/* This value is used to mark PIC functions in an object that mixes
740
   PIC and non-PIC.  */
741
#define STO_MIPS_PIC            0x20
742
#define ELF_ST_IS_MIPS_PIC(OTHER) \
743
  (((OTHER) & ~ELF_ST_VISIBILITY (-1)) == STO_MIPS_PIC)
744
#define ELF_ST_SET_MIPS_PIC(OTHER) \
745
  (STO_MIPS_PIC | ELF_ST_VISIBILITY (OTHER))
746
 
747 24 jeremybenn
/* This value is used for a mips16 .text symbol.  */
748
#define STO_MIPS16              0xf0
749 225 jeremybenn
#define ELF_ST_IS_MIPS16(OTHER) (((OTHER) & 0xf0) == STO_MIPS16)
750
#define ELF_ST_SET_MIPS16(OTHER) (((OTHER) & ~0xf0) | STO_MIPS16)
751 24 jeremybenn
 
752
/* This bit is used on Irix to indicate a symbol whose definition
753
   is optional - if, at final link time, it cannot be found, no
754
   error message should be produced.  */
755
#define STO_OPTIONAL            (1 << 2)
756
/* A macro to examine the STO_OPTIONAL bit.  */
757
#define ELF_MIPS_IS_OPTIONAL(other)     ((other) & STO_OPTIONAL)
758
 
759
/* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
760
   relocation entry specifies up to three actual relocations, all at
761
   the same address.  The first relocation which required a symbol
762
   uses the symbol in the r_sym field.  The second relocation which
763
   requires a symbol uses the symbol in the r_ssym field.  If all
764
   three relocations require a symbol, the third one uses a zero
765
   value.  */
766
 
767
/* An entry in a 64 bit SHT_REL section.  */
768
 
769
typedef struct
770
{
771
  /* Address of relocation.  */
772
  unsigned char r_offset[8];
773
  /* Symbol index.  */
774
  unsigned char r_sym[4];
775
  /* Special symbol.  */
776
  unsigned char r_ssym[1];
777
  /* Third relocation.  */
778
  unsigned char r_type3[1];
779
  /* Second relocation.  */
780
  unsigned char r_type2[1];
781
  /* First relocation.  */
782
  unsigned char r_type[1];
783
} Elf64_Mips_External_Rel;
784
 
785
typedef struct
786
{
787
  /* Address of relocation.  */
788
  bfd_vma r_offset;
789
  /* Symbol index.  */
790
  unsigned long r_sym;
791
  /* Special symbol.  */
792
  unsigned char r_ssym;
793
  /* Third relocation.  */
794
  unsigned char r_type3;
795
  /* Second relocation.  */
796
  unsigned char r_type2;
797
  /* First relocation.  */
798
  unsigned char r_type;
799
} Elf64_Mips_Internal_Rel;
800
 
801
/* An entry in a 64 bit SHT_RELA section.  */
802
 
803
typedef struct
804
{
805
  /* Address of relocation.  */
806
  unsigned char r_offset[8];
807
  /* Symbol index.  */
808
  unsigned char r_sym[4];
809
  /* Special symbol.  */
810
  unsigned char r_ssym[1];
811
  /* Third relocation.  */
812
  unsigned char r_type3[1];
813
  /* Second relocation.  */
814
  unsigned char r_type2[1];
815
  /* First relocation.  */
816
  unsigned char r_type[1];
817
  /* Addend.  */
818
  unsigned char r_addend[8];
819
} Elf64_Mips_External_Rela;
820
 
821
typedef struct
822
{
823
  /* Address of relocation.  */
824
  bfd_vma r_offset;
825
  /* Symbol index.  */
826
  unsigned long r_sym;
827
  /* Special symbol.  */
828
  unsigned char r_ssym;
829
  /* Third relocation.  */
830
  unsigned char r_type3;
831
  /* Second relocation.  */
832
  unsigned char r_type2;
833
  /* First relocation.  */
834
  unsigned char r_type;
835
  /* Addend.  */
836
  bfd_signed_vma r_addend;
837
} Elf64_Mips_Internal_Rela;
838
 
839
/* MIPS ELF 64 relocation info access macros.  */
840
#define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
841
#define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
842
#define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
843
#define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
844
 
845
/* Values found in the r_ssym field of a relocation entry.  */
846
 
847
/* No relocation.  */
848
#define RSS_UNDEF       0
849
 
850
/* Value of GP.  */
851
#define RSS_GP          1
852
 
853
/* Value of GP in object being relocated.  */
854
#define RSS_GP0         2
855
 
856
/* Address of location being relocated.  */
857
#define RSS_LOC         3
858
 
859
/* A SHT_MIPS_OPTIONS section contains a series of options, each of
860
   which starts with this header.  */
861
 
862
typedef struct
863
{
864
  /* Type of option.  */
865
  unsigned char kind[1];
866
  /* Size of option descriptor, including header.  */
867
  unsigned char size[1];
868
  /* Section index of affected section, or 0 for global option.  */
869
  unsigned char section[2];
870
  /* Information specific to this kind of option.  */
871
  unsigned char info[4];
872
} Elf_External_Options;
873
 
874
typedef struct
875
{
876
  /* Type of option.  */
877
  unsigned char kind;
878
  /* Size of option descriptor, including header.  */
879
  unsigned char size;
880
  /* Section index of affected section, or 0 for global option.  */
881
  unsigned short section;
882
  /* Information specific to this kind of option.  */
883
  unsigned long info;
884
} Elf_Internal_Options;
885
 
886
/* MIPS ELF option header swapping routines.  */
887
extern void bfd_mips_elf_swap_options_in
888
  (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
889
extern void bfd_mips_elf_swap_options_out
890
  (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
891
 
892
/* Values which may appear in the kind field of an Elf_Options
893
   structure.  */
894
 
895
/* Undefined.  */
896
#define ODK_NULL        0
897
 
898
/* Register usage and GP value.  */
899
#define ODK_REGINFO     1
900
 
901
/* Exception processing information.  */
902
#define ODK_EXCEPTIONS  2
903
 
904
/* Section padding information.  */
905
#define ODK_PAD         3
906
 
907
/* Hardware workarounds performed.  */
908
#define ODK_HWPATCH     4
909
 
910
/* Fill value used by the linker.  */
911
#define ODK_FILL        5
912
 
913
/* Reserved space for desktop tools.  */
914
#define ODK_TAGS        6
915
 
916
/* Hardware workarounds, AND bits when merging.  */
917
#define ODK_HWAND       7
918
 
919
/* Hardware workarounds, OR bits when merging.  */
920
#define ODK_HWOR        8
921
 
922
/* GP group to use for text/data sections.  */
923
#define ODK_GP_GROUP    9
924
 
925
/* ID information.  */
926
#define ODK_IDENT       10
927
 
928
/* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
929
   structure.  In the 64 bit ABI, it is the following structure.  The
930
   info field of the options header is not used.  */
931
 
932
typedef struct
933
{
934
  /* Mask of general purpose registers used.  */
935
  unsigned char ri_gprmask[4];
936
  /* Padding.  */
937
  unsigned char ri_pad[4];
938
  /* Mask of co-processor registers used.  */
939
  unsigned char ri_cprmask[4][4];
940
  /* GP register value for this object file.  */
941
  unsigned char ri_gp_value[8];
942
} Elf64_External_RegInfo;
943
 
944
typedef struct
945
{
946
  /* Mask of general purpose registers used.  */
947
  unsigned long ri_gprmask;
948
  /* Padding.  */
949
  unsigned long ri_pad;
950
  /* Mask of co-processor registers used.  */
951
  unsigned long ri_cprmask[4];
952
  /* GP register value for this object file.  */
953
  bfd_vma ri_gp_value;
954
} Elf64_Internal_RegInfo;
955
 
956
typedef struct
957
{
958
  /* The hash value computed from the name of the corresponding
959
     dynamic symbol.  */
960
  unsigned char ms_hash_value[4];
961
  /* Contains both the dynamic relocation index and the symbol flags
962
     field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
963
     to access the individual values.  The dynamic relocation index
964
     identifies the first entry in the .rel.dyn section that
965
     references the dynamic symbol corresponding to this msym entry.
966
     If the index is 0, no dynamic relocations are associated with the
967
     symbol.  The symbol flags field is reserved for future use.  */
968
  unsigned char ms_info[4];
969
} Elf32_External_Msym;
970
 
971
typedef struct
972
{
973
  /* The hash value computed from the name of the corresponding
974
     dynamic symbol.  */
975
  unsigned long ms_hash_value;
976
  /* Contains both the dynamic relocation index and the symbol flags
977
     field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
978
     to access the individual values.  The dynamic relocation index
979
     identifies the first entry in the .rel.dyn section that
980
     references the dynamic symbol corresponding to this msym entry.
981
     If the index is 0, no dynamic relocations are associated with the
982
     symbol.  The symbol flags field is reserved for future use.  */
983
  unsigned long ms_info;
984
} Elf32_Internal_Msym;
985
 
986
#define ELF32_MS_REL_INDEX(i) ((i) >> 8)
987
#define ELF32_MS_FLAGS(i)     (i) & 0xff)
988
#define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
989
 
990
/* MIPS ELF reginfo swapping routines.  */
991
extern void bfd_mips_elf64_swap_reginfo_in
992
  (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
993
extern void bfd_mips_elf64_swap_reginfo_out
994
  (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
995
 
996
/* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
997
#define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
998
#define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
999
#define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
1000
#define OEX_SMM         0x20000 /* Force sequential memory mode.  */
1001
#define OEX_FPDBUG      0x40000 /* Force precise floating-point
1002
                                   exceptions (debug mode).  */
1003
#define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
1004
 
1005
/* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
1006
#define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
1007
#define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
1008
#define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
1009
#define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
1010
#define OEX_FPU_INEX    0x01    /* Inexact exception.  */
1011
 
1012
/* Masks for the info word of an ODK_PAD descriptor.  */
1013
#define OPAD_PREFIX     0x01
1014
#define OPAD_POSTFIX    0x02
1015
#define OPAD_SYMBOL     0x04
1016
 
1017
/* Masks for the info word of an ODK_HWPATCH descriptor.  */
1018
#define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
1019
#define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
1020
#define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
1021
#define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
1022
                                           (clean == 1).  */
1023
#define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
1024
                                           load patch. */
1025
 
1026
/* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
1027
#define OGP_GROUP       0x0000ffff      /* GP group number.  */
1028
#define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
1029
 
1030
/* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
1031
#define OHWA0_R4KEOP_CHECKED    0x00000001
1032
#define OHWA0_R4KEOP_CLEAN      0x00000002
1033
 
1034
 
1035
/* Object attribute tags.  */
1036
enum
1037
{
1038
  /* 0-3 are generic.  */
1039
  Tag_GNU_MIPS_ABI_FP = 4, /* Value 1 for hard-float -mdouble-float, 2
1040
                              for hard-float -msingle-float, 3 for
1041
                              soft-float, 4 for -mips32r2 -mfp64; 0 for
1042
                              not tagged or not using any ABIs affected
1043
                              by the differences.  */
1044
};
1045
 
1046
#endif /* _ELF_MIPS_H */

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