1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
|
/* IA-64 support for 64-bit ELF
Copyright (C) 1998-2023 Free Software Foundation, Inc.
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "sysdep.h"
#include "bfd.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "opcode/ia64.h"
#include "elf/ia64.h"
#include "objalloc.h"
#include "hashtab.h"
#include "elfxx-ia64.h"
/* THE RULES for all the stuff the linker creates --
GOT Entries created in response to LTOFF or LTOFF_FPTR
relocations. Dynamic relocs created for dynamic
symbols in an application; REL relocs for locals
in a shared library.
FPTR The canonical function descriptor. Created for local
symbols in applications. Descriptors for dynamic symbols
and local symbols in shared libraries are created by
ld.so. Thus there are no dynamic relocs against these
objects. The FPTR relocs for such _are_ passed through
to the dynamic relocation tables.
FULL_PLT Created for a PCREL21B relocation against a dynamic symbol.
Requires the creation of a PLTOFF entry. This does not
require any dynamic relocations.
PLTOFF Created by PLTOFF relocations. For local symbols, this
is an alternate function descriptor, and in shared libraries
requires two REL relocations. Note that this cannot be
transformed into an FPTR relocation, since it must be in
range of the GP. For dynamic symbols, this is a function
descriptor for a MIN_PLT entry, and requires one IPLT reloc.
MIN_PLT Created by PLTOFF entries against dynamic symbols. This
does not require dynamic relocations. */
/* ia64-specific relocation. */
#define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0])))
/* Perform a relocation. Not much to do here as all the hard work is
done in elfNN_ia64_final_link_relocate. */
static bfd_reloc_status_type
ia64_elf_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc,
asymbol *sym ATTRIBUTE_UNUSED,
void *data ATTRIBUTE_UNUSED, asection *input_section,
bfd *output_bfd, char **error_message)
{
if (output_bfd)
{
reloc->address += input_section->output_offset;
return bfd_reloc_ok;
}
if (input_section->flags & SEC_DEBUGGING)
return bfd_reloc_continue;
*error_message = "Unsupported call to ia64_elf_reloc";
return bfd_reloc_notsupported;
}
#define IA64_HOWTO(TYPE, NAME, SIZE, PCREL, IN) \
HOWTO (TYPE, 0, SIZE, 0, PCREL, 0, complain_overflow_signed, \
ia64_elf_reloc, NAME, false, 0, -1, IN)
/* This table has to be sorted according to increasing number of the
TYPE field. */
static reloc_howto_type ia64_howto_table[] =
{
IA64_HOWTO (R_IA64_NONE, "NONE", 0, false, true),
IA64_HOWTO (R_IA64_IMM14, "IMM14", 1, false, true),
IA64_HOWTO (R_IA64_IMM22, "IMM22", 1, false, true),
IA64_HOWTO (R_IA64_IMM64, "IMM64", 1, false, true),
IA64_HOWTO (R_IA64_DIR32MSB, "DIR32MSB", 4, false, true),
IA64_HOWTO (R_IA64_DIR32LSB, "DIR32LSB", 4, false, true),
IA64_HOWTO (R_IA64_DIR64MSB, "DIR64MSB", 8, false, true),
IA64_HOWTO (R_IA64_DIR64LSB, "DIR64LSB", 8, false, true),
IA64_HOWTO (R_IA64_GPREL22, "GPREL22", 1, false, true),
IA64_HOWTO (R_IA64_GPREL64I, "GPREL64I", 1, false, true),
IA64_HOWTO (R_IA64_GPREL32MSB, "GPREL32MSB", 4, false, true),
IA64_HOWTO (R_IA64_GPREL32LSB, "GPREL32LSB", 4, false, true),
IA64_HOWTO (R_IA64_GPREL64MSB, "GPREL64MSB", 8, false, true),
IA64_HOWTO (R_IA64_GPREL64LSB, "GPREL64LSB", 8, false, true),
IA64_HOWTO (R_IA64_LTOFF22, "LTOFF22", 1, false, true),
IA64_HOWTO (R_IA64_LTOFF64I, "LTOFF64I", 1, false, true),
IA64_HOWTO (R_IA64_PLTOFF22, "PLTOFF22", 1, false, true),
IA64_HOWTO (R_IA64_PLTOFF64I, "PLTOFF64I", 1, false, true),
IA64_HOWTO (R_IA64_PLTOFF64MSB, "PLTOFF64MSB", 8, false, true),
IA64_HOWTO (R_IA64_PLTOFF64LSB, "PLTOFF64LSB", 8, false, true),
IA64_HOWTO (R_IA64_FPTR64I, "FPTR64I", 1, false, true),
IA64_HOWTO (R_IA64_FPTR32MSB, "FPTR32MSB", 4, false, true),
IA64_HOWTO (R_IA64_FPTR32LSB, "FPTR32LSB", 4, false, true),
IA64_HOWTO (R_IA64_FPTR64MSB, "FPTR64MSB", 8, false, true),
IA64_HOWTO (R_IA64_FPTR64LSB, "FPTR64LSB", 8, false, true),
IA64_HOWTO (R_IA64_PCREL60B, "PCREL60B", 1, true, true),
IA64_HOWTO (R_IA64_PCREL21B, "PCREL21B", 1, true, true),
IA64_HOWTO (R_IA64_PCREL21M, "PCREL21M", 1, true, true),
IA64_HOWTO (R_IA64_PCREL21F, "PCREL21F", 1, true, true),
IA64_HOWTO (R_IA64_PCREL32MSB, "PCREL32MSB", 4, true, true),
IA64_HOWTO (R_IA64_PCREL32LSB, "PCREL32LSB", 4, true, true),
IA64_HOWTO (R_IA64_PCREL64MSB, "PCREL64MSB", 8, true, true),
IA64_HOWTO (R_IA64_PCREL64LSB, "PCREL64LSB", 8, true, true),
IA64_HOWTO (R_IA64_LTOFF_FPTR22, "LTOFF_FPTR22", 1, false, true),
IA64_HOWTO (R_IA64_LTOFF_FPTR64I, "LTOFF_FPTR64I", 1, false, true),
IA64_HOWTO (R_IA64_LTOFF_FPTR32MSB, "LTOFF_FPTR32MSB", 4, false, true),
IA64_HOWTO (R_IA64_LTOFF_FPTR32LSB, "LTOFF_FPTR32LSB", 4, false, true),
IA64_HOWTO (R_IA64_LTOFF_FPTR64MSB, "LTOFF_FPTR64MSB", 8, false, true),
IA64_HOWTO (R_IA64_LTOFF_FPTR64LSB, "LTOFF_FPTR64LSB", 8, false, true),
IA64_HOWTO (R_IA64_SEGREL32MSB, "SEGREL32MSB", 4, false, true),
IA64_HOWTO (R_IA64_SEGREL32LSB, "SEGREL32LSB", 4, false, true),
IA64_HOWTO (R_IA64_SEGREL64MSB, "SEGREL64MSB", 8, false, true),
IA64_HOWTO (R_IA64_SEGREL64LSB, "SEGREL64LSB", 8, false, true),
IA64_HOWTO (R_IA64_SECREL32MSB, "SECREL32MSB", 4, false, true),
IA64_HOWTO (R_IA64_SECREL32LSB, "SECREL32LSB", 4, false, true),
IA64_HOWTO (R_IA64_SECREL64MSB, "SECREL64MSB", 8, false, true),
IA64_HOWTO (R_IA64_SECREL64LSB, "SECREL64LSB", 8, false, true),
IA64_HOWTO (R_IA64_REL32MSB, "REL32MSB", 4, false, true),
IA64_HOWTO (R_IA64_REL32LSB, "REL32LSB", 4, false, true),
IA64_HOWTO (R_IA64_REL64MSB, "REL64MSB", 8, false, true),
IA64_HOWTO (R_IA64_REL64LSB, "REL64LSB", 8, false, true),
IA64_HOWTO (R_IA64_LTV32MSB, "LTV32MSB", 4, false, true),
IA64_HOWTO (R_IA64_LTV32LSB, "LTV32LSB", 4, false, true),
IA64_HOWTO (R_IA64_LTV64MSB, "LTV64MSB", 8, false, true),
IA64_HOWTO (R_IA64_LTV64LSB, "LTV64LSB", 8, false, true),
IA64_HOWTO (R_IA64_PCREL21BI, "PCREL21BI", 1, true, true),
IA64_HOWTO (R_IA64_PCREL22, "PCREL22", 1, true, true),
IA64_HOWTO (R_IA64_PCREL64I, "PCREL64I", 1, true, true),
IA64_HOWTO (R_IA64_IPLTMSB, "IPLTMSB", 8, false, true),
IA64_HOWTO (R_IA64_IPLTLSB, "IPLTLSB", 8, false, true),
IA64_HOWTO (R_IA64_COPY, "COPY", 8, false, true),
IA64_HOWTO (R_IA64_LTOFF22X, "LTOFF22X", 1, false, true),
IA64_HOWTO (R_IA64_LDXMOV, "LDXMOV", 1, false, true),
IA64_HOWTO (R_IA64_TPREL14, "TPREL14", 1, false, false),
IA64_HOWTO (R_IA64_TPREL22, "TPREL22", 1, false, false),
IA64_HOWTO (R_IA64_TPREL64I, "TPREL64I", 1, false, false),
IA64_HOWTO (R_IA64_TPREL64MSB, "TPREL64MSB", 8, false, false),
IA64_HOWTO (R_IA64_TPREL64LSB, "TPREL64LSB", 8, false, false),
IA64_HOWTO (R_IA64_LTOFF_TPREL22, "LTOFF_TPREL22", 1, false, false),
IA64_HOWTO (R_IA64_DTPMOD64MSB, "DTPMOD64MSB", 8, false, false),
IA64_HOWTO (R_IA64_DTPMOD64LSB, "DTPMOD64LSB", 8, false, false),
IA64_HOWTO (R_IA64_LTOFF_DTPMOD22, "LTOFF_DTPMOD22", 1, false, false),
IA64_HOWTO (R_IA64_DTPREL14, "DTPREL14", 1, false, false),
IA64_HOWTO (R_IA64_DTPREL22, "DTPREL22", 1, false, false),
IA64_HOWTO (R_IA64_DTPREL64I, "DTPREL64I", 1, false, false),
IA64_HOWTO (R_IA64_DTPREL32MSB, "DTPREL32MSB", 4, false, false),
IA64_HOWTO (R_IA64_DTPREL32LSB, "DTPREL32LSB", 4, false, false),
IA64_HOWTO (R_IA64_DTPREL64MSB, "DTPREL64MSB", 8, false, false),
IA64_HOWTO (R_IA64_DTPREL64LSB, "DTPREL64LSB", 8, false, false),
IA64_HOWTO (R_IA64_LTOFF_DTPREL22, "LTOFF_DTPREL22", 1, false, false),
};
static unsigned char elf_code_to_howto_index[R_IA64_MAX_RELOC_CODE + 1];
/* Given a BFD reloc type, return the matching HOWTO structure. */
reloc_howto_type *
ia64_elf_lookup_howto (unsigned int rtype)
{
static bool inited = false;
int i;
if (!inited)
{
inited = true;
memset (elf_code_to_howto_index, 0xff, sizeof (elf_code_to_howto_index));
for (i = 0; i < NELEMS (ia64_howto_table); ++i)
elf_code_to_howto_index[ia64_howto_table[i].type] = i;
}
if (rtype > R_IA64_MAX_RELOC_CODE)
return NULL;
i = elf_code_to_howto_index[rtype];
if (i >= NELEMS (ia64_howto_table))
return NULL;
return ia64_howto_table + i;
}
reloc_howto_type *
ia64_elf_reloc_type_lookup (bfd *abfd,
bfd_reloc_code_real_type bfd_code)
{
unsigned int rtype;
switch (bfd_code)
{
case BFD_RELOC_NONE: rtype = R_IA64_NONE; break;
case BFD_RELOC_IA64_IMM14: rtype = R_IA64_IMM14; break;
case BFD_RELOC_IA64_IMM22: rtype = R_IA64_IMM22; break;
case BFD_RELOC_IA64_IMM64: rtype = R_IA64_IMM64; break;
case BFD_RELOC_IA64_DIR32MSB: rtype = R_IA64_DIR32MSB; break;
case BFD_RELOC_IA64_DIR32LSB: rtype = R_IA64_DIR32LSB; break;
case BFD_RELOC_IA64_DIR64MSB: rtype = R_IA64_DIR64MSB; break;
case BFD_RELOC_IA64_DIR64LSB: rtype = R_IA64_DIR64LSB; break;
case BFD_RELOC_IA64_GPREL22: rtype = R_IA64_GPREL22; break;
case BFD_RELOC_IA64_GPREL64I: rtype = R_IA64_GPREL64I; break;
case BFD_RELOC_IA64_GPREL32MSB: rtype = R_IA64_GPREL32MSB; break;
case BFD_RELOC_IA64_GPREL32LSB: rtype = R_IA64_GPREL32LSB; break;
case BFD_RELOC_IA64_GPREL64MSB: rtype = R_IA64_GPREL64MSB; break;
case BFD_RELOC_IA64_GPREL64LSB: rtype = R_IA64_GPREL64LSB; break;
case BFD_RELOC_IA64_LTOFF22: rtype = R_IA64_LTOFF22; break;
case BFD_RELOC_IA64_LTOFF64I: rtype = R_IA64_LTOFF64I; break;
case BFD_RELOC_IA64_PLTOFF22: rtype = R_IA64_PLTOFF22; break;
case BFD_RELOC_IA64_PLTOFF64I: rtype = R_IA64_PLTOFF64I; break;
case BFD_RELOC_IA64_PLTOFF64MSB: rtype = R_IA64_PLTOFF64MSB; break;
case BFD_RELOC_IA64_PLTOFF64LSB: rtype = R_IA64_PLTOFF64LSB; break;
case BFD_RELOC_IA64_FPTR64I: rtype = R_IA64_FPTR64I; break;
case BFD_RELOC_IA64_FPTR32MSB: rtype = R_IA64_FPTR32MSB; break;
case BFD_RELOC_IA64_FPTR32LSB: rtype = R_IA64_FPTR32LSB; break;
case BFD_RELOC_IA64_FPTR64MSB: rtype = R_IA64_FPTR64MSB; break;
case BFD_RELOC_IA64_FPTR64LSB: rtype = R_IA64_FPTR64LSB; break;
case BFD_RELOC_IA64_PCREL21B: rtype = R_IA64_PCREL21B; break;
case BFD_RELOC_IA64_PCREL21BI: rtype = R_IA64_PCREL21BI; break;
case BFD_RELOC_IA64_PCREL21M: rtype = R_IA64_PCREL21M; break;
case BFD_RELOC_IA64_PCREL21F: rtype = R_IA64_PCREL21F; break;
case BFD_RELOC_IA64_PCREL22: rtype = R_IA64_PCREL22; break;
case BFD_RELOC_IA64_PCREL60B: rtype = R_IA64_PCREL60B; break;
case BFD_RELOC_IA64_PCREL64I: rtype = R_IA64_PCREL64I; break;
case BFD_RELOC_IA64_PCREL32MSB: rtype = R_IA64_PCREL32MSB; break;
case BFD_RELOC_IA64_PCREL32LSB: rtype = R_IA64_PCREL32LSB; break;
case BFD_RELOC_IA64_PCREL64MSB: rtype = R_IA64_PCREL64MSB; break;
case BFD_RELOC_IA64_PCREL64LSB: rtype = R_IA64_PCREL64LSB; break;
case BFD_RELOC_IA64_LTOFF_FPTR22: rtype = R_IA64_LTOFF_FPTR22; break;
case BFD_RELOC_IA64_LTOFF_FPTR64I: rtype = R_IA64_LTOFF_FPTR64I; break;
case BFD_RELOC_IA64_LTOFF_FPTR32MSB: rtype = R_IA64_LTOFF_FPTR32MSB; break;
case BFD_RELOC_IA64_LTOFF_FPTR32LSB: rtype = R_IA64_LTOFF_FPTR32LSB; break;
case BFD_RELOC_IA64_LTOFF_FPTR64MSB: rtype = R_IA64_LTOFF_FPTR64MSB; break;
case BFD_RELOC_IA64_LTOFF_FPTR64LSB: rtype = R_IA64_LTOFF_FPTR64LSB; break;
case BFD_RELOC_IA64_SEGREL32MSB: rtype = R_IA64_SEGREL32MSB; break;
case BFD_RELOC_IA64_SEGREL32LSB: rtype = R_IA64_SEGREL32LSB; break;
case BFD_RELOC_IA64_SEGREL64MSB: rtype = R_IA64_SEGREL64MSB; break;
case BFD_RELOC_IA64_SEGREL64LSB: rtype = R_IA64_SEGREL64LSB; break;
case BFD_RELOC_IA64_SECREL32MSB: rtype = R_IA64_SECREL32MSB; break;
case BFD_RELOC_IA64_SECREL32LSB: rtype = R_IA64_SECREL32LSB; break;
case BFD_RELOC_IA64_SECREL64MSB: rtype = R_IA64_SECREL64MSB; break;
case BFD_RELOC_IA64_SECREL64LSB: rtype = R_IA64_SECREL64LSB; break;
case BFD_RELOC_IA64_REL32MSB: rtype = R_IA64_REL32MSB; break;
case BFD_RELOC_IA64_REL32LSB: rtype = R_IA64_REL32LSB; break;
case BFD_RELOC_IA64_REL64MSB: rtype = R_IA64_REL64MSB; break;
case BFD_RELOC_IA64_REL64LSB: rtype = R_IA64_REL64LSB; break;
case BFD_RELOC_IA64_LTV32MSB: rtype = R_IA64_LTV32MSB; break;
case BFD_RELOC_IA64_LTV32LSB: rtype = R_IA64_LTV32LSB; break;
case BFD_RELOC_IA64_LTV64MSB: rtype = R_IA64_LTV64MSB; break;
case BFD_RELOC_IA64_LTV64LSB: rtype = R_IA64_LTV64LSB; break;
case BFD_RELOC_IA64_IPLTMSB: rtype = R_IA64_IPLTMSB; break;
case BFD_RELOC_IA64_IPLTLSB: rtype = R_IA64_IPLTLSB; break;
case BFD_RELOC_IA64_COPY: rtype = R_IA64_COPY; break;
case BFD_RELOC_IA64_LTOFF22X: rtype = R_IA64_LTOFF22X; break;
case BFD_RELOC_IA64_LDXMOV: rtype = R_IA64_LDXMOV; break;
case BFD_RELOC_IA64_TPREL14: rtype = R_IA64_TPREL14; break;
case BFD_RELOC_IA64_TPREL22: rtype = R_IA64_TPREL22; break;
case BFD_RELOC_IA64_TPREL64I: rtype = R_IA64_TPREL64I; break;
case BFD_RELOC_IA64_TPREL64MSB: rtype = R_IA64_TPREL64MSB; break;
case BFD_RELOC_IA64_TPREL64LSB: rtype = R_IA64_TPREL64LSB; break;
case BFD_RELOC_IA64_LTOFF_TPREL22: rtype = R_IA64_LTOFF_TPREL22; break;
case BFD_RELOC_IA64_DTPMOD64MSB: rtype = R_IA64_DTPMOD64MSB; break;
case BFD_RELOC_IA64_DTPMOD64LSB: rtype = R_IA64_DTPMOD64LSB; break;
case BFD_RELOC_IA64_LTOFF_DTPMOD22: rtype = R_IA64_LTOFF_DTPMOD22; break;
case BFD_RELOC_IA64_DTPREL14: rtype = R_IA64_DTPREL14; break;
case BFD_RELOC_IA64_DTPREL22: rtype = R_IA64_DTPREL22; break;
case BFD_RELOC_IA64_DTPREL64I: rtype = R_IA64_DTPREL64I; break;
case BFD_RELOC_IA64_DTPREL32MSB: rtype = R_IA64_DTPREL32MSB; break;
case BFD_RELOC_IA64_DTPREL32LSB: rtype = R_IA64_DTPREL32LSB; break;
case BFD_RELOC_IA64_DTPREL64MSB: rtype = R_IA64_DTPREL64MSB; break;
case BFD_RELOC_IA64_DTPREL64LSB: rtype = R_IA64_DTPREL64LSB; break;
case BFD_RELOC_IA64_LTOFF_DTPREL22: rtype = R_IA64_LTOFF_DTPREL22; break;
default:
/* xgettext:c-format */
_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
abfd, (int) bfd_code);
bfd_set_error (bfd_error_bad_value);
return NULL;
}
return ia64_elf_lookup_howto (rtype);
}
reloc_howto_type *
ia64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
const char *r_name)
{
unsigned int i;
for (i = 0;
i < sizeof (ia64_howto_table) / sizeof (ia64_howto_table[0]);
i++)
if (ia64_howto_table[i].name != NULL
&& strcasecmp (ia64_howto_table[i].name, r_name) == 0)
return &ia64_howto_table[i];
return NULL;
}
#define BTYPE_SHIFT 6
#define Y_SHIFT 26
#define X6_SHIFT 27
#define X4_SHIFT 27
#define X3_SHIFT 33
#define X2_SHIFT 31
#define X_SHIFT 33
#define OPCODE_SHIFT 37
#define OPCODE_BITS (0xfLL << OPCODE_SHIFT)
#define X6_BITS (0x3fLL << X6_SHIFT)
#define X4_BITS (0xfLL << X4_SHIFT)
#define X3_BITS (0x7LL << X3_SHIFT)
#define X2_BITS (0x3LL << X2_SHIFT)
#define X_BITS (0x1LL << X_SHIFT)
#define Y_BITS (0x1LL << Y_SHIFT)
#define BTYPE_BITS (0x7LL << BTYPE_SHIFT)
#define PREDICATE_BITS (0x3fLL)
#define IS_NOP_B(i) \
(((i) & (OPCODE_BITS | X6_BITS)) == (2LL << OPCODE_SHIFT))
#define IS_NOP_F(i) \
(((i) & (OPCODE_BITS | X_BITS | X6_BITS | Y_BITS)) \
== (0x1LL << X6_SHIFT))
#define IS_NOP_I(i) \
(((i) & (OPCODE_BITS | X3_BITS | X6_BITS | Y_BITS)) \
== (0x1LL << X6_SHIFT))
#define IS_NOP_M(i) \
(((i) & (OPCODE_BITS | X3_BITS | X2_BITS | X4_BITS | Y_BITS)) \
== (0x1LL << X4_SHIFT))
#define IS_BR_COND(i) \
(((i) & (OPCODE_BITS | BTYPE_BITS)) == (0x4LL << OPCODE_SHIFT))
#define IS_BR_CALL(i) \
(((i) & OPCODE_BITS) == (0x5LL << OPCODE_SHIFT))
bool
ia64_elf_relax_br (bfd_byte *contents, bfd_vma off)
{
unsigned int template_val, mlx;
bfd_vma t0, t1, s0, s1, s2, br_code;
long br_slot;
bfd_byte *hit_addr;
hit_addr = (bfd_byte *) (contents + off);
br_slot = (intptr_t) hit_addr & 0x3;
hit_addr -= br_slot;
t0 = bfd_getl64 (hit_addr + 0);
t1 = bfd_getl64 (hit_addr + 8);
/* Check if we can turn br into brl. A label is always at the start
of the bundle. Even if there are predicates on NOPs, we still
perform this optimization. */
template_val = t0 & 0x1e;
s0 = (t0 >> 5) & 0x1ffffffffffLL;
s1 = ((t0 >> 46) | (t1 << 18)) & 0x1ffffffffffLL;
s2 = (t1 >> 23) & 0x1ffffffffffLL;
switch (br_slot)
{
case 0:
/* Check if slot 1 and slot 2 are NOPs. Possible template is
BBB. We only need to check nop.b. */
if (!(IS_NOP_B (s1) && IS_NOP_B (s2)))
return false;
br_code = s0;
break;
case 1:
/* Check if slot 2 is NOP. Possible templates are MBB and BBB.
For BBB, slot 0 also has to be nop.b. */
if (!((template_val == 0x12 /* MBB */
&& IS_NOP_B (s2))
|| (template_val == 0x16 /* BBB */
&& IS_NOP_B (s0)
&& IS_NOP_B (s2))))
return false;
br_code = s1;
break;
case 2:
/* Check if slot 1 is NOP. Possible templates are MIB, MBB, BBB,
MMB and MFB. For BBB, slot 0 also has to be nop.b. */
if (!((template_val == 0x10 /* MIB */
&& IS_NOP_I (s1))
|| (template_val == 0x12 /* MBB */
&& IS_NOP_B (s1))
|| (template_val == 0x16 /* BBB */
&& IS_NOP_B (s0)
&& IS_NOP_B (s1))
|| (template_val == 0x18 /* MMB */
&& IS_NOP_M (s1))
|| (template_val == 0x1c /* MFB */
&& IS_NOP_F (s1))))
return false;
br_code = s2;
break;
default:
/* It should never happen. */
abort ();
}
/* We can turn br.cond/br.call into brl.cond/brl.call. */
if (!(IS_BR_COND (br_code) || IS_BR_CALL (br_code)))
return false;
/* Turn br into brl by setting bit 40. */
br_code |= 0x1LL << 40;
/* Turn the old bundle into a MLX bundle with the same stop-bit
variety. */
if (t0 & 0x1)
mlx = 0x5;
else
mlx = 0x4;
if (template_val == 0x16)
{
/* For BBB, we need to put nop.m in slot 0. We keep the original
predicate only if slot 0 isn't br. */
if (br_slot == 0)
t0 = 0LL;
else
t0 &= PREDICATE_BITS << 5;
t0 |= 0x1LL << (X4_SHIFT + 5);
}
else
{
/* Keep the original instruction in slot 0. */
t0 &= 0x1ffffffffffLL << 5;
}
t0 |= mlx;
/* Put brl in slot 1. */
t1 = br_code << 23;
bfd_putl64 (t0, hit_addr);
bfd_putl64 (t1, hit_addr + 8);
return true;
}
void
ia64_elf_relax_brl (bfd_byte *contents, bfd_vma off)
{
int template_val;
bfd_byte *hit_addr;
bfd_vma t0, t1, i0, i1, i2;
hit_addr = (bfd_byte *) (contents + off);
hit_addr -= (intptr_t) hit_addr & 0x3;
t0 = bfd_getl64 (hit_addr);
t1 = bfd_getl64 (hit_addr + 8);
/* Keep the instruction in slot 0. */
i0 = (t0 >> 5) & 0x1ffffffffffLL;
/* Use nop.b for slot 1. */
i1 = 0x4000000000LL;
/* For slot 2, turn brl into br by masking out bit 40. */
i2 = (t1 >> 23) & 0x0ffffffffffLL;
/* Turn a MLX bundle into a MBB bundle with the same stop-bit
variety. */
if (t0 & 0x1)
template_val = 0x13;
else
template_val = 0x12;
t0 = (i1 << 46) | (i0 << 5) | template_val;
t1 = (i2 << 23) | (i1 >> 18);
bfd_putl64 (t0, hit_addr);
bfd_putl64 (t1, hit_addr + 8);
}
void
ia64_elf_relax_ldxmov (bfd_byte *contents, bfd_vma off)
{
int shift, r1, r3;
bfd_vma dword, insn;
switch ((int)off & 0x3)
{
case 0: shift = 5; break;
case 1: shift = 14; off += 3; break;
case 2: shift = 23; off += 6; break;
default:
abort ();
}
dword = bfd_getl64 (contents + off);
insn = (dword >> shift) & 0x1ffffffffffLL;
r1 = (insn >> 6) & 127;
r3 = (insn >> 20) & 127;
if (r1 == r3)
insn = 0x8000000; /* nop */
else
insn = (insn & 0x7f01fff) | 0x10800000000LL; /* (qp) mov r1 = r3 */
dword &= ~(0x1ffffffffffLL << shift);
dword |= (insn << shift);
bfd_putl64 (dword, contents + off);
}
bfd_reloc_status_type
ia64_elf_install_value (bfd_byte *hit_addr, bfd_vma v, unsigned int r_type)
{
const struct ia64_operand *op;
int bigendian = 0, shift = 0;
bfd_vma t0, t1, dword;
ia64_insn insn;
enum ia64_opnd opnd;
const char *err;
size_t size = 8;
uint64_t val = v;
opnd = IA64_OPND_NIL;
switch (r_type)
{
case R_IA64_NONE:
case R_IA64_LDXMOV:
return bfd_reloc_ok;
/* Instruction relocations. */
case R_IA64_IMM14:
case R_IA64_TPREL14:
case R_IA64_DTPREL14:
opnd = IA64_OPND_IMM14;
break;
case R_IA64_PCREL21F: opnd = IA64_OPND_TGT25; break;
case R_IA64_PCREL21M: opnd = IA64_OPND_TGT25b; break;
case R_IA64_PCREL60B: opnd = IA64_OPND_TGT64; break;
case R_IA64_PCREL21B:
case R_IA64_PCREL21BI:
opnd = IA64_OPND_TGT25c;
break;
case R_IA64_IMM22:
case R_IA64_GPREL22:
case R_IA64_LTOFF22:
case R_IA64_LTOFF22X:
case R_IA64_PLTOFF22:
case R_IA64_PCREL22:
case R_IA64_LTOFF_FPTR22:
case R_IA64_TPREL22:
case R_IA64_DTPREL22:
case R_IA64_LTOFF_TPREL22:
case R_IA64_LTOFF_DTPMOD22:
case R_IA64_LTOFF_DTPREL22:
opnd = IA64_OPND_IMM22;
break;
case R_IA64_IMM64:
case R_IA64_GPREL64I:
case R_IA64_LTOFF64I:
case R_IA64_PLTOFF64I:
case R_IA64_PCREL64I:
case R_IA64_FPTR64I:
case R_IA64_LTOFF_FPTR64I:
case R_IA64_TPREL64I:
case R_IA64_DTPREL64I:
opnd = IA64_OPND_IMMU64;
break;
/* Data relocations. */
case R_IA64_DIR32MSB:
case R_IA64_GPREL32MSB:
case R_IA64_FPTR32MSB:
case R_IA64_PCREL32MSB:
case R_IA64_LTOFF_FPTR32MSB:
case R_IA64_SEGREL32MSB:
case R_IA64_SECREL32MSB:
case R_IA64_LTV32MSB:
case R_IA64_DTPREL32MSB:
size = 4; bigendian = 1;
break;
case R_IA64_DIR32LSB:
case R_IA64_GPREL32LSB:
case R_IA64_FPTR32LSB:
case R_IA64_PCREL32LSB:
case R_IA64_LTOFF_FPTR32LSB:
case R_IA64_SEGREL32LSB:
case R_IA64_SECREL32LSB:
case R_IA64_LTV32LSB:
case R_IA64_DTPREL32LSB:
size = 4; bigendian = 0;
break;
case R_IA64_DIR64MSB:
case R_IA64_GPREL64MSB:
case R_IA64_PLTOFF64MSB:
case R_IA64_FPTR64MSB:
case R_IA64_PCREL64MSB:
case R_IA64_LTOFF_FPTR64MSB:
case R_IA64_SEGREL64MSB:
case R_IA64_SECREL64MSB:
case R_IA64_LTV64MSB:
case R_IA64_TPREL64MSB:
case R_IA64_DTPMOD64MSB:
case R_IA64_DTPREL64MSB:
size = 8; bigendian = 1;
break;
case R_IA64_DIR64LSB:
case R_IA64_GPREL64LSB:
case R_IA64_PLTOFF64LSB:
case R_IA64_FPTR64LSB:
case R_IA64_PCREL64LSB:
case R_IA64_LTOFF_FPTR64LSB:
case R_IA64_SEGREL64LSB:
case R_IA64_SECREL64LSB:
case R_IA64_LTV64LSB:
case R_IA64_TPREL64LSB:
case R_IA64_DTPMOD64LSB:
case R_IA64_DTPREL64LSB:
size = 8; bigendian = 0;
break;
/* Unsupported / Dynamic relocations. */
default:
return bfd_reloc_notsupported;
}
switch (opnd)
{
case IA64_OPND_IMMU64:
hit_addr -= (intptr_t) hit_addr & 0x3;
t0 = bfd_getl64 (hit_addr);
t1 = bfd_getl64 (hit_addr + 8);
/* tmpl/s: bits 0.. 5 in t0
slot 0: bits 5..45 in t0
slot 1: bits 46..63 in t0, bits 0..22 in t1
slot 2: bits 23..63 in t1 */
/* First, clear the bits that form the 64 bit constant. */
t0 &= ~(0x3ffffULL << 46);
t1 &= ~(0x7fffffLL
| (( (0x07fLL << 13) | (0x1ffLL << 27)
| (0x01fLL << 22) | (0x001LL << 21)
| (0x001LL << 36)) << 23));
t0 |= ((val >> 22) & 0x03ffffLL) << 46; /* 18 lsbs of imm41 */
t1 |= ((val >> 40) & 0x7fffffLL) << 0; /* 23 msbs of imm41 */
t1 |= ( (((val >> 0) & 0x07f) << 13) /* imm7b */
| (((val >> 7) & 0x1ff) << 27) /* imm9d */
| (((val >> 16) & 0x01f) << 22) /* imm5c */
| (((val >> 21) & 0x001) << 21) /* ic */
| (((val >> 63) & 0x001) << 36)) << 23; /* i */
bfd_putl64 (t0, hit_addr);
bfd_putl64 (t1, hit_addr + 8);
break;
case IA64_OPND_TGT64:
hit_addr -= (intptr_t) hit_addr & 0x3;
t0 = bfd_getl64 (hit_addr);
t1 = bfd_getl64 (hit_addr + 8);
/* tmpl/s: bits 0.. 5 in t0
slot 0: bits 5..45 in t0
slot 1: bits 46..63 in t0, bits 0..22 in t1
slot 2: bits 23..63 in t1 */
/* First, clear the bits that form the 64 bit constant. */
t0 &= ~(0x3ffffULL << 46);
t1 &= ~(0x7fffffLL
| ((1LL << 36 | 0xfffffLL << 13) << 23));
val >>= 4;
t0 |= ((val >> 20) & 0xffffLL) << 2 << 46; /* 16 lsbs of imm39 */
t1 |= ((val >> 36) & 0x7fffffLL) << 0; /* 23 msbs of imm39 */
t1 |= ((((val >> 0) & 0xfffffLL) << 13) /* imm20b */
| (((val >> 59) & 0x1LL) << 36)) << 23; /* i */
bfd_putl64 (t0, hit_addr);
bfd_putl64 (t1, hit_addr + 8);
break;
default:
switch ((intptr_t) hit_addr & 0x3)
{
case 0: shift = 5; break;
case 1: shift = 14; hit_addr += 3; break;
case 2: shift = 23; hit_addr += 6; break;
case 3: return bfd_reloc_notsupported; /* shouldn't happen... */
}
dword = bfd_getl64 (hit_addr);
insn = (dword >> shift) & 0x1ffffffffffLL;
op = elf64_ia64_operands + opnd;
err = (*op->insert) (op, val, &insn);
if (err)
return bfd_reloc_overflow;
dword &= ~(0x1ffffffffffULL << shift);
dword |= (insn << shift);
bfd_putl64 (dword, hit_addr);
break;
case IA64_OPND_NIL:
/* A data relocation. */
if (bigendian)
if (size == 4)
bfd_putb32 (val, hit_addr);
else
bfd_putb64 (val, hit_addr);
else
if (size == 4)
bfd_putl32 (val, hit_addr);
else
bfd_putl64 (val, hit_addr);
break;
}
return bfd_reloc_ok;
}
|