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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
   2003, 2004, 2005, 2008
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_5400        0x00910000
218
#define E_MIPS_MACH_5500        0x00980000
219
#define E_MIPS_MACH_9000        0x00990000
220
#define E_MIPS_MACH_LS2E        0x00A00000
221
#define E_MIPS_MACH_LS2F        0x00A10000
222
 
223
/* Processor specific section indices.  These sections do not actually
224
   exist.  Symbols with a st_shndx field corresponding to one of these
225
   values have a special meaning.  */
226
 
227
/* Defined and allocated common symbol.  Value is virtual address.  If
228
   relocated, alignment must be preserved.  */
229
#define SHN_MIPS_ACOMMON        0xff00
230
 
231
/* Defined and allocated text symbol.  Value is virtual address.
232
   Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
233
#define SHN_MIPS_TEXT           0xff01
234
 
235
/* Defined and allocated data symbol.  Value is virtual address.
236
   Occur in the dynamic symbol table of Alpha OSF/1 and Irix 5 executables.  */
237
#define SHN_MIPS_DATA           0xff02
238
 
239
/* Small common symbol.  */
240
#define SHN_MIPS_SCOMMON        0xff03
241
 
242
/* Small undefined symbol.  */
243
#define SHN_MIPS_SUNDEFINED     0xff04
244
 
245
/* Processor specific section types.  */
246
 
247
/* Section contains the set of dynamic shared objects used when
248
   statically linking.  */
249
#define SHT_MIPS_LIBLIST        0x70000000
250
 
251
/* I'm not sure what this is, but it's used on Irix 5.  */
252
#define SHT_MIPS_MSYM           0x70000001
253
 
254
/* Section contains list of symbols whose definitions conflict with
255
   symbols defined in shared objects.  */
256
#define SHT_MIPS_CONFLICT       0x70000002
257
 
258
/* Section contains the global pointer table.  */
259
#define SHT_MIPS_GPTAB          0x70000003
260
 
261
/* Section contains microcode information.  The exact format is
262
   unspecified.  */
263
#define SHT_MIPS_UCODE          0x70000004
264
 
265
/* Section contains some sort of debugging information.  The exact
266
   format is unspecified.  It's probably ECOFF symbols.  */
267
#define SHT_MIPS_DEBUG          0x70000005
268
 
269
/* Section contains register usage information.  */
270
#define SHT_MIPS_REGINFO        0x70000006
271
 
272
/* ??? */
273
#define SHT_MIPS_PACKAGE        0x70000007
274
 
275
/* ??? */
276
#define SHT_MIPS_PACKSYM        0x70000008
277
 
278
/* ??? */
279
#define SHT_MIPS_RELD           0x70000009
280
 
281
/* Section contains interface information.  */
282
#define SHT_MIPS_IFACE          0x7000000b
283
 
284
/* Section contains description of contents of another section.  */
285
#define SHT_MIPS_CONTENT        0x7000000c
286
 
287
/* Section contains miscellaneous options.  */
288
#define SHT_MIPS_OPTIONS        0x7000000d
289
 
290
/* ??? */
291
#define SHT_MIPS_SHDR           0x70000010
292
 
293
/* ??? */
294
#define SHT_MIPS_FDESC          0x70000011
295
 
296
/* ??? */
297
#define SHT_MIPS_EXTSYM         0x70000012
298
 
299
/* ??? */
300
#define SHT_MIPS_DENSE          0x70000013
301
 
302
/* ??? */
303
#define SHT_MIPS_PDESC          0x70000014
304
 
305
/* ??? */
306
#define SHT_MIPS_LOCSYM         0x70000015
307
 
308
/* ??? */
309
#define SHT_MIPS_AUXSYM         0x70000016
310
 
311
/* ??? */
312
#define SHT_MIPS_OPTSYM         0x70000017
313
 
314
/* ??? */
315
#define SHT_MIPS_LOCSTR         0x70000018
316
 
317
/* ??? */
318
#define SHT_MIPS_LINE           0x70000019
319
 
320
/* ??? */
321
#define SHT_MIPS_RFDESC         0x7000001a
322
 
323
/* Delta C++: symbol table */
324
#define SHT_MIPS_DELTASYM       0x7000001b
325
 
326
/* Delta C++: instance table */
327
#define SHT_MIPS_DELTAINST      0x7000001c
328
 
329
/* Delta C++: class table */
330
#define SHT_MIPS_DELTACLASS     0x7000001d
331
 
332
/* DWARF debugging section.  */
333
#define SHT_MIPS_DWARF          0x7000001e
334
 
335
/* Delta C++: declarations */
336
#define SHT_MIPS_DELTADECL      0x7000001f
337
 
338
/* List of libraries the binary depends on.  Includes a time stamp, version
339
   number.  */
340
#define SHT_MIPS_SYMBOL_LIB     0x70000020
341
 
342
/* Events section.  */
343
#define SHT_MIPS_EVENTS         0x70000021
344
 
345
/* ??? */
346
#define SHT_MIPS_TRANSLATE      0x70000022
347
 
348
/* Special pixie sections */
349
#define SHT_MIPS_PIXIE          0x70000023
350
 
351
/* Address translation table (for debug info) */
352
#define SHT_MIPS_XLATE          0x70000024
353
 
354
/* SGI internal address translation table (for debug info) */
355
#define SHT_MIPS_XLATE_DEBUG    0x70000025
356
 
357
/* Intermediate code */
358
#define SHT_MIPS_WHIRL          0x70000026
359
 
360
/* C++ exception handling region info */
361
#define SHT_MIPS_EH_REGION      0x70000027
362
 
363
/* Obsolete address translation table (for debug info) */
364
#define SHT_MIPS_XLATE_OLD      0x70000028
365
 
366
/* Runtime procedure descriptor table exception information (ucode) ??? */
367
#define SHT_MIPS_PDR_EXCEPTION  0x70000029
368
 
369
 
370
/* A section of type SHT_MIPS_LIBLIST contains an array of the
371
   following structure.  The sh_link field is the section index of the
372
   string table.  The sh_info field is the number of entries in the
373
   section.  */
374
typedef struct
375
{
376
  /* String table index for name of shared object.  */
377
  unsigned long l_name;
378
  /* Time stamp.  */
379
  unsigned long l_time_stamp;
380
  /* Checksum of symbol names and common sizes.  */
381
  unsigned long l_checksum;
382
  /* String table index for version.  */
383
  unsigned long l_version;
384
  /* Flags.  */
385
  unsigned long l_flags;
386
} Elf32_Lib;
387
 
388
/* The external version of Elf32_Lib.  */
389
typedef struct
390
{
391
  unsigned char l_name[4];
392
  unsigned char l_time_stamp[4];
393
  unsigned char l_checksum[4];
394
  unsigned char l_version[4];
395
  unsigned char l_flags[4];
396
} Elf32_External_Lib;
397
 
398
/* The l_flags field of an Elf32_Lib structure may contain the
399
   following flags.  */
400
 
401
/* Require an exact match at runtime.  */
402
#define LL_EXACT_MATCH          0x00000001
403
 
404
/* Ignore version incompatibilities at runtime.  */
405
#define LL_IGNORE_INT_VER       0x00000002
406
 
407
/* Require matching minor version number.  */
408
#define LL_REQUIRE_MINOR        0x00000004
409
 
410
/* ??? */
411
#define LL_EXPORTS              0x00000008
412
 
413
/* Delay loading of this library until really needed.  */
414
#define LL_DELAY_LOAD           0x00000010
415
 
416
/* ??? Delta C++ stuff ??? */
417
#define LL_DELTA                0x00000020
418
 
419
 
420
/* A section of type SHT_MIPS_CONFLICT is an array of indices into the
421
   .dynsym section.  Each element has the following type.  */
422
typedef unsigned long Elf32_Conflict;
423
typedef unsigned char Elf32_External_Conflict[4];
424
 
425
typedef unsigned long Elf64_Conflict;
426
typedef unsigned char Elf64_External_Conflict[8];
427
 
428
/* A section of type SHT_MIPS_GPTAB contains information about how
429
   much GP space would be required for different -G arguments.  This
430
   information is only used so that the linker can provide informative
431
   suggestions as to the best -G value to use.  The sh_info field is
432
   the index of the section for which this information applies.  The
433
   contents of the section are an array of the following union.  The
434
   first element uses the gt_header field.  The remaining elements use
435
   the gt_entry field.  */
436
typedef union
437
{
438
  struct
439
    {
440
      /* -G value actually used for this object file.  */
441
      unsigned long gt_current_g_value;
442
      /* Unused.  */
443
      unsigned long gt_unused;
444
    } gt_header;
445
  struct
446
    {
447
      /* If this -G argument has been used...  */
448
      unsigned long gt_g_value;
449
      /* ...this many GP section bytes would be required.  */
450
      unsigned long gt_bytes;
451
    } gt_entry;
452
} Elf32_gptab;
453
 
454
/* The external version of Elf32_gptab.  */
455
 
456
typedef union
457
{
458
  struct
459
    {
460
      unsigned char gt_current_g_value[4];
461
      unsigned char gt_unused[4];
462
    } gt_header;
463
  struct
464
    {
465
      unsigned char gt_g_value[4];
466
      unsigned char gt_bytes[4];
467
    } gt_entry;
468
} Elf32_External_gptab;
469
 
470
/* A section of type SHT_MIPS_REGINFO contains the following
471
   structure.  */
472
typedef struct
473
{
474
  /* Mask of general purpose registers used.  */
475
  unsigned long ri_gprmask;
476
  /* Mask of co-processor registers used.  */
477
  unsigned long ri_cprmask[4];
478
  /* GP register value for this object file.  */
479
  long ri_gp_value;
480
} Elf32_RegInfo;
481
 
482
/* The external version of the Elf_RegInfo structure.  */
483
typedef struct
484
{
485
  unsigned char ri_gprmask[4];
486
  unsigned char ri_cprmask[4][4];
487
  unsigned char ri_gp_value[4];
488
} Elf32_External_RegInfo;
489
 
490
/* MIPS ELF .reginfo swapping routines.  */
491
extern void bfd_mips_elf32_swap_reginfo_in
492
  (bfd *, const Elf32_External_RegInfo *, Elf32_RegInfo *);
493
extern void bfd_mips_elf32_swap_reginfo_out
494
  (bfd *, const Elf32_RegInfo *, Elf32_External_RegInfo *);
495
 
496
/* Processor specific section flags.  */
497
 
498
/* This section must be in the global data area.  */
499
#define SHF_MIPS_GPREL          0x10000000
500
 
501
/* This section should be merged.  */
502
#define SHF_MIPS_MERGE          0x20000000
503
 
504
/* This section contains address data of size implied by section
505
   element size.  */
506
#define SHF_MIPS_ADDR           0x40000000
507
 
508
/* This section contains string data.  */
509
#define SHF_MIPS_STRING         0x80000000
510
 
511
/* This section may not be stripped.  */
512
#define SHF_MIPS_NOSTRIP        0x08000000
513
 
514
/* This section is local to threads.  */
515
#define SHF_MIPS_LOCAL          0x04000000
516
 
517
/* Linker should generate implicit weak names for this section.  */
518
#define SHF_MIPS_NAMES          0x02000000
519
 
520
/* Section contais text/data which may be replicated in other sections.
521
   Linker should retain only one copy.  */
522
#define SHF_MIPS_NODUPES        0x01000000
523
 
524
/* Processor specific program header types.  */
525
 
526
/* Register usage information.  Identifies one .reginfo section.  */
527
#define PT_MIPS_REGINFO         0x70000000
528
 
529
/* Runtime procedure table.  */
530
#define PT_MIPS_RTPROC          0x70000001
531
 
532
/* .MIPS.options section.  */
533
#define PT_MIPS_OPTIONS         0x70000002
534
 
535
/* Processor specific dynamic array tags.  */
536
 
537
/* 32 bit version number for runtime linker interface.  */
538
#define DT_MIPS_RLD_VERSION     0x70000001
539
 
540
/* Time stamp.  */
541
#define DT_MIPS_TIME_STAMP      0x70000002
542
 
543
/* Checksum of external strings and common sizes.  */
544
#define DT_MIPS_ICHECKSUM       0x70000003
545
 
546
/* Index of version string in string table.  */
547
#define DT_MIPS_IVERSION        0x70000004
548
 
549
/* 32 bits of flags.  */
550
#define DT_MIPS_FLAGS           0x70000005
551
 
552
/* Base address of the segment.  */
553
#define DT_MIPS_BASE_ADDRESS    0x70000006
554
 
555
/* ??? */
556
#define DT_MIPS_MSYM            0x70000007
557
 
558
/* Address of .conflict section.  */
559
#define DT_MIPS_CONFLICT        0x70000008
560
 
561
/* Address of .liblist section.  */
562
#define DT_MIPS_LIBLIST         0x70000009
563
 
564
/* Number of local global offset table entries.  */
565
#define DT_MIPS_LOCAL_GOTNO     0x7000000a
566
 
567
/* Number of entries in the .conflict section.  */
568
#define DT_MIPS_CONFLICTNO      0x7000000b
569
 
570
/* Number of entries in the .liblist section.  */
571
#define DT_MIPS_LIBLISTNO       0x70000010
572
 
573
/* Number of entries in the .dynsym section.  */
574
#define DT_MIPS_SYMTABNO        0x70000011
575
 
576
/* Index of first external dynamic symbol not referenced locally.  */
577
#define DT_MIPS_UNREFEXTNO      0x70000012
578
 
579
/* Index of first dynamic symbol in global offset table.  */
580
#define DT_MIPS_GOTSYM          0x70000013
581
 
582
/* Number of page table entries in global offset table.  */
583
#define DT_MIPS_HIPAGENO        0x70000014
584
 
585
/* Address of run time loader map, used for debugging.  */
586
#define DT_MIPS_RLD_MAP         0x70000016
587
 
588
/* Delta C++ class definition.  */
589
#define DT_MIPS_DELTA_CLASS     0x70000017
590
 
591
/* Number of entries in DT_MIPS_DELTA_CLASS.  */
592
#define DT_MIPS_DELTA_CLASS_NO  0x70000018
593
 
594
/* Delta C++ class instances.  */
595
#define DT_MIPS_DELTA_INSTANCE  0x70000019
596
 
597
/* Number of entries in DT_MIPS_DELTA_INSTANCE.  */
598
#define DT_MIPS_DELTA_INSTANCE_NO       0x7000001a
599
 
600
/* Delta relocations.  */
601
#define DT_MIPS_DELTA_RELOC     0x7000001b
602
 
603
/* Number of entries in DT_MIPS_DELTA_RELOC.  */
604
#define DT_MIPS_DELTA_RELOC_NO  0x7000001c
605
 
606
/* Delta symbols that Delta relocations refer to.  */
607
#define DT_MIPS_DELTA_SYM       0x7000001d
608
 
609
/* Number of entries in DT_MIPS_DELTA_SYM.  */
610
#define DT_MIPS_DELTA_SYM_NO    0x7000001e
611
 
612
/* Delta symbols that hold class declarations.  */
613
#define DT_MIPS_DELTA_CLASSSYM  0x70000020
614
 
615
/* Number of entries in DT_MIPS_DELTA_CLASSSYM.  */
616
#define DT_MIPS_DELTA_CLASSSYM_NO       0x70000021
617
 
618
/* Flags indicating information about C++ flavor.  */
619
#define DT_MIPS_CXX_FLAGS       0x70000022
620
 
621
/* Pixie information (???).  */
622
#define DT_MIPS_PIXIE_INIT      0x70000023
623
 
624
/* Address of .MIPS.symlib */
625
#define DT_MIPS_SYMBOL_LIB      0x70000024
626
 
627
/* The GOT index of the first PTE for a segment */
628
#define DT_MIPS_LOCALPAGE_GOTIDX        0x70000025
629
 
630
/* The GOT index of the first PTE for a local symbol */
631
#define DT_MIPS_LOCAL_GOTIDX    0x70000026
632
 
633
/* The GOT index of the first PTE for a hidden symbol */
634
#define DT_MIPS_HIDDEN_GOTIDX   0x70000027
635
 
636
/* The GOT index of the first PTE for a protected symbol */
637
#define DT_MIPS_PROTECTED_GOTIDX        0x70000028
638
 
639
/* Address of `.MIPS.options'.  */
640
#define DT_MIPS_OPTIONS         0x70000029
641
 
642
/* Address of `.interface'.  */
643
#define DT_MIPS_INTERFACE       0x7000002a
644
 
645
/* ??? */
646
#define DT_MIPS_DYNSTR_ALIGN    0x7000002b
647
 
648
/* Size of the .interface section.  */
649
#define DT_MIPS_INTERFACE_SIZE  0x7000002c
650
 
651
/* Size of rld_text_resolve function stored in the GOT.  */
652
#define DT_MIPS_RLD_TEXT_RESOLVE_ADDR   0x7000002d
653
 
654
/* Default suffix of DSO to be added by rld on dlopen() calls.  */
655
#define DT_MIPS_PERF_SUFFIX     0x7000002e
656
 
657
/* Size of compact relocation section (O32).  */
658
#define DT_MIPS_COMPACT_SIZE    0x7000002f
659
 
660
/* GP value for auxiliary GOTs.  */
661
#define DT_MIPS_GP_VALUE        0x70000030
662
 
663
/* Address of auxiliary .dynamic.  */
664
#define DT_MIPS_AUX_DYNAMIC     0x70000031
665
 
666
/* Flags which may appear in a DT_MIPS_FLAGS entry.  */
667
 
668
/* No flags.  */
669
#define RHF_NONE                0x00000000
670
 
671
/* Uses shortcut pointers.  */
672
#define RHF_QUICKSTART          0x00000001
673
 
674
/* Hash size is not a power of two.  */
675
#define RHF_NOTPOT              0x00000002
676
 
677
/* Ignore LD_LIBRARY_PATH.  */
678
#define RHS_NO_LIBRARY_REPLACEMENT 0x00000004
679
 
680
/* DSO address may not be relocated. */
681
#define RHF_NO_MOVE             0x00000008
682
 
683
/* SGI specific features. */
684
#define RHF_SGI_ONLY            0x00000010
685
 
686
/* Guarantee that .init will finish executing before any non-init
687
   code in DSO is called. */
688
#define RHF_GUARANTEE_INIT         0x00000020
689
 
690
/* Contains Delta C++ code. */
691
#define RHF_DELTA_C_PLUS_PLUS      0x00000040
692
 
693
/* Guarantee that .init will start executing before any non-init
694
   code in DSO is called. */
695
#define RHF_GUARANTEE_START_INIT   0x00000080
696
 
697
/* Generated by pixie. */
698
#define RHF_PIXIE                  0x00000100
699
 
700
/* Delay-load DSO by default. */
701
#define RHF_DEFAULT_DELAY_LOAD     0x00000200
702
 
703
/* Object may be requickstarted */
704
#define RHF_REQUICKSTART           0x00000400
705
 
706
/* Object has been requickstarted */
707
#define RHF_REQUICKSTARTED         0x00000800
708
 
709
/* Generated by cord. */
710
#define RHF_CORD                   0x00001000
711
 
712
/* Object contains no unresolved undef symbols. */
713
#define RHF_NO_UNRES_UNDEF         0x00002000
714
 
715
/* Symbol table is in a safe order. */
716
#define RHF_RLD_ORDER_SAFE         0x00004000
717
 
718
/* Special values for the st_other field in the symbol table.  These
719
   are used in an Irix 5 dynamic symbol table.  */
720
 
721
#define STO_DEFAULT             STV_DEFAULT
722
#define STO_INTERNAL            STV_INTERNAL
723
#define STO_HIDDEN              STV_HIDDEN
724
#define STO_PROTECTED           STV_PROTECTED
725
 
726
/* This value is used for a mips16 .text symbol.  */
727
#define STO_MIPS16              0xf0
728
 
729
/* This bit is used on Irix to indicate a symbol whose definition
730
   is optional - if, at final link time, it cannot be found, no
731
   error message should be produced.  */
732
#define STO_OPTIONAL            (1 << 2)
733
/* A macro to examine the STO_OPTIONAL bit.  */
734
#define ELF_MIPS_IS_OPTIONAL(other)     ((other) & STO_OPTIONAL)
735
 
736
/* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
737
   relocation entry specifies up to three actual relocations, all at
738
   the same address.  The first relocation which required a symbol
739
   uses the symbol in the r_sym field.  The second relocation which
740
   requires a symbol uses the symbol in the r_ssym field.  If all
741
   three relocations require a symbol, the third one uses a zero
742
   value.  */
743
 
744
/* An entry in a 64 bit SHT_REL section.  */
745
 
746
typedef struct
747
{
748
  /* Address of relocation.  */
749
  unsigned char r_offset[8];
750
  /* Symbol index.  */
751
  unsigned char r_sym[4];
752
  /* Special symbol.  */
753
  unsigned char r_ssym[1];
754
  /* Third relocation.  */
755
  unsigned char r_type3[1];
756
  /* Second relocation.  */
757
  unsigned char r_type2[1];
758
  /* First relocation.  */
759
  unsigned char r_type[1];
760
} Elf64_Mips_External_Rel;
761
 
762
typedef struct
763
{
764
  /* Address of relocation.  */
765
  bfd_vma r_offset;
766
  /* Symbol index.  */
767
  unsigned long r_sym;
768
  /* Special symbol.  */
769
  unsigned char r_ssym;
770
  /* Third relocation.  */
771
  unsigned char r_type3;
772
  /* Second relocation.  */
773
  unsigned char r_type2;
774
  /* First relocation.  */
775
  unsigned char r_type;
776
} Elf64_Mips_Internal_Rel;
777
 
778
/* An entry in a 64 bit SHT_RELA section.  */
779
 
780
typedef struct
781
{
782
  /* Address of relocation.  */
783
  unsigned char r_offset[8];
784
  /* Symbol index.  */
785
  unsigned char r_sym[4];
786
  /* Special symbol.  */
787
  unsigned char r_ssym[1];
788
  /* Third relocation.  */
789
  unsigned char r_type3[1];
790
  /* Second relocation.  */
791
  unsigned char r_type2[1];
792
  /* First relocation.  */
793
  unsigned char r_type[1];
794
  /* Addend.  */
795
  unsigned char r_addend[8];
796
} Elf64_Mips_External_Rela;
797
 
798
typedef struct
799
{
800
  /* Address of relocation.  */
801
  bfd_vma r_offset;
802
  /* Symbol index.  */
803
  unsigned long r_sym;
804
  /* Special symbol.  */
805
  unsigned char r_ssym;
806
  /* Third relocation.  */
807
  unsigned char r_type3;
808
  /* Second relocation.  */
809
  unsigned char r_type2;
810
  /* First relocation.  */
811
  unsigned char r_type;
812
  /* Addend.  */
813
  bfd_signed_vma r_addend;
814
} Elf64_Mips_Internal_Rela;
815
 
816
/* MIPS ELF 64 relocation info access macros.  */
817
#define ELF64_MIPS_R_SSYM(i) (((i) >> 24) & 0xff)
818
#define ELF64_MIPS_R_TYPE3(i) (((i) >> 16) & 0xff)
819
#define ELF64_MIPS_R_TYPE2(i) (((i) >> 8) & 0xff)
820
#define ELF64_MIPS_R_TYPE(i) ((i) & 0xff)
821
 
822
/* Values found in the r_ssym field of a relocation entry.  */
823
 
824
/* No relocation.  */
825
#define RSS_UNDEF       0
826
 
827
/* Value of GP.  */
828
#define RSS_GP          1
829
 
830
/* Value of GP in object being relocated.  */
831
#define RSS_GP0         2
832
 
833
/* Address of location being relocated.  */
834
#define RSS_LOC         3
835
 
836
/* A SHT_MIPS_OPTIONS section contains a series of options, each of
837
   which starts with this header.  */
838
 
839
typedef struct
840
{
841
  /* Type of option.  */
842
  unsigned char kind[1];
843
  /* Size of option descriptor, including header.  */
844
  unsigned char size[1];
845
  /* Section index of affected section, or 0 for global option.  */
846
  unsigned char section[2];
847
  /* Information specific to this kind of option.  */
848
  unsigned char info[4];
849
} Elf_External_Options;
850
 
851
typedef struct
852
{
853
  /* Type of option.  */
854
  unsigned char kind;
855
  /* Size of option descriptor, including header.  */
856
  unsigned char size;
857
  /* Section index of affected section, or 0 for global option.  */
858
  unsigned short section;
859
  /* Information specific to this kind of option.  */
860
  unsigned long info;
861
} Elf_Internal_Options;
862
 
863
/* MIPS ELF option header swapping routines.  */
864
extern void bfd_mips_elf_swap_options_in
865
  (bfd *, const Elf_External_Options *, Elf_Internal_Options *);
866
extern void bfd_mips_elf_swap_options_out
867
  (bfd *, const Elf_Internal_Options *, Elf_External_Options *);
868
 
869
/* Values which may appear in the kind field of an Elf_Options
870
   structure.  */
871
 
872
/* Undefined.  */
873
#define ODK_NULL        0
874
 
875
/* Register usage and GP value.  */
876
#define ODK_REGINFO     1
877
 
878
/* Exception processing information.  */
879
#define ODK_EXCEPTIONS  2
880
 
881
/* Section padding information.  */
882
#define ODK_PAD         3
883
 
884
/* Hardware workarounds performed.  */
885
#define ODK_HWPATCH     4
886
 
887
/* Fill value used by the linker.  */
888
#define ODK_FILL        5
889
 
890
/* Reserved space for desktop tools.  */
891
#define ODK_TAGS        6
892
 
893
/* Hardware workarounds, AND bits when merging.  */
894
#define ODK_HWAND       7
895
 
896
/* Hardware workarounds, OR bits when merging.  */
897
#define ODK_HWOR        8
898
 
899
/* GP group to use for text/data sections.  */
900
#define ODK_GP_GROUP    9
901
 
902
/* ID information.  */
903
#define ODK_IDENT       10
904
 
905
/* In the 32 bit ABI, an ODK_REGINFO option is just a Elf32_RegInfo
906
   structure.  In the 64 bit ABI, it is the following structure.  The
907
   info field of the options header is not used.  */
908
 
909
typedef struct
910
{
911
  /* Mask of general purpose registers used.  */
912
  unsigned char ri_gprmask[4];
913
  /* Padding.  */
914
  unsigned char ri_pad[4];
915
  /* Mask of co-processor registers used.  */
916
  unsigned char ri_cprmask[4][4];
917
  /* GP register value for this object file.  */
918
  unsigned char ri_gp_value[8];
919
} Elf64_External_RegInfo;
920
 
921
typedef struct
922
{
923
  /* Mask of general purpose registers used.  */
924
  unsigned long ri_gprmask;
925
  /* Padding.  */
926
  unsigned long ri_pad;
927
  /* Mask of co-processor registers used.  */
928
  unsigned long ri_cprmask[4];
929
  /* GP register value for this object file.  */
930
  bfd_vma ri_gp_value;
931
} Elf64_Internal_RegInfo;
932
 
933
typedef struct
934
{
935
  /* The hash value computed from the name of the corresponding
936
     dynamic symbol.  */
937
  unsigned char ms_hash_value[4];
938
  /* Contains both the dynamic relocation index and the symbol flags
939
     field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
940
     to access the individual values.  The dynamic relocation index
941
     identifies the first entry in the .rel.dyn section that
942
     references the dynamic symbol corresponding to this msym entry.
943
     If the index is 0, no dynamic relocations are associated with the
944
     symbol.  The symbol flags field is reserved for future use.  */
945
  unsigned char ms_info[4];
946
} Elf32_External_Msym;
947
 
948
typedef struct
949
{
950
  /* The hash value computed from the name of the corresponding
951
     dynamic symbol.  */
952
  unsigned long ms_hash_value;
953
  /* Contains both the dynamic relocation index and the symbol flags
954
     field.  The macros ELF32_MS_REL_INDEX and ELF32_MS_FLAGS are used
955
     to access the individual values.  The dynamic relocation index
956
     identifies the first entry in the .rel.dyn section that
957
     references the dynamic symbol corresponding to this msym entry.
958
     If the index is 0, no dynamic relocations are associated with the
959
     symbol.  The symbol flags field is reserved for future use.  */
960
  unsigned long ms_info;
961
} Elf32_Internal_Msym;
962
 
963
#define ELF32_MS_REL_INDEX(i) ((i) >> 8)
964
#define ELF32_MS_FLAGS(i)     (i) & 0xff)
965
#define ELF32_MS_INFO(r, f)   (((r) << 8) + ((f) & 0xff))
966
 
967
/* MIPS ELF reginfo swapping routines.  */
968
extern void bfd_mips_elf64_swap_reginfo_in
969
  (bfd *, const Elf64_External_RegInfo *, Elf64_Internal_RegInfo *);
970
extern void bfd_mips_elf64_swap_reginfo_out
971
  (bfd *, const Elf64_Internal_RegInfo *, Elf64_External_RegInfo *);
972
 
973
/* Masks for the info work of an ODK_EXCEPTIONS descriptor.  */
974
#define OEX_FPU_MIN     0x1f    /* FPEs which must be enabled.  */
975
#define OEX_FPU_MAX     0x1f00  /* FPEs which may be enabled.  */
976
#define OEX_PAGE0       0x10000 /* Page zero must be mapped.  */
977
#define OEX_SMM         0x20000 /* Force sequential memory mode.  */
978
#define OEX_FPDBUG      0x40000 /* Force precise floating-point
979
                                   exceptions (debug mode).  */
980
#define OEX_DISMISS     0x80000 /* Dismiss invalid address faults.  */
981
 
982
/* Masks of the FP exceptions for OEX_FPU_MIN and OEX_FPU_MAX.  */
983
#define OEX_FPU_INVAL   0x10    /* Invalid operation exception.  */
984
#define OEX_FPU_DIV0    0x08    /* Division by zero exception.  */
985
#define OEX_FPU_OFLO    0x04    /* Overflow exception.  */
986
#define OEX_FPU_UFLO    0x02    /* Underflow exception.  */
987
#define OEX_FPU_INEX    0x01    /* Inexact exception.  */
988
 
989
/* Masks for the info word of an ODK_PAD descriptor.  */
990
#define OPAD_PREFIX     0x01
991
#define OPAD_POSTFIX    0x02
992
#define OPAD_SYMBOL     0x04
993
 
994
/* Masks for the info word of an ODK_HWPATCH descriptor.  */
995
#define OHW_R4KEOP      0x00000001      /* R4000 end-of-page patch.  */
996
#define OHW_R8KPFETCH   0x00000002      /* May need R8000 prefetch patch.  */
997
#define OHW_R5KEOP      0x00000004      /* R5000 end-of-page patch.  */
998
#define OHW_R5KCVTL     0x00000008      /* R5000 cvt.[ds].l bug
999
                                           (clean == 1).  */
1000
#define OHW_R10KLDL     0x00000010      /* Needs R10K misaligned
1001
                                           load patch. */
1002
 
1003
/* Masks for the info word of an ODK_IDENT/ODK_GP_GROUP descriptor.  */
1004
#define OGP_GROUP       0x0000ffff      /* GP group number.  */
1005
#define OGP_SELF        0xffff0000      /* Self-contained GP groups.  */
1006
 
1007
/* Masks for the info word of an ODK_HWAND/ODK_HWOR descriptor.  */
1008
#define OHWA0_R4KEOP_CHECKED    0x00000001
1009
#define OHWA0_R4KEOP_CLEAN      0x00000002
1010
 
1011
 
1012
/* Object attribute tags.  */
1013
enum
1014
{
1015
  /* 0-3 are generic.  */
1016
  Tag_GNU_MIPS_ABI_FP = 4, /* Value 1 for hard-float -mdouble-float, 2
1017
                              for hard-float -msingle-float, 3 for
1018
                              soft-float, 4 for -mips32r2 -mfp64; 0 for
1019
                              not tagged or not using any ABIs affected
1020
                              by the differences.  */
1021
};
1022
 
1023
#endif /* _ELF_MIPS_H */

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