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
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
|
/* tc-tilepro.c -- Assemble for a TILEPro chip.
Copyright (C) 2011-2019 Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
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 "as.h"
#include "subsegs.h"
#include "elf/tilepro.h"
#include "opcode/tilepro.h"
#include "dwarf2dbg.h"
#include "dw2gencfi.h"
#include "safe-ctype.h"
/* Special registers. */
#define TREG_IDN0 57
#define TREG_IDN1 58
#define TREG_UDN0 59
#define TREG_UDN1 60
#define TREG_UDN2 61
#define TREG_UDN3 62
#define TREG_ZERO 63
/* Generic assembler global variables which must be defined by all
targets. */
/* Characters which always start a comment. */
const char comment_chars[] = "#";
/* Characters which start a comment at the beginning of a line. */
const char line_comment_chars[] = "#";
/* Characters which may be used to separate multiple commands on a
single line. */
const char line_separator_chars[] = ";";
/* Characters which are used to indicate an exponent in a floating
point number. */
const char EXP_CHARS[] = "eE";
/* Characters which mean that a number is a floating point constant,
as in 0d1.0. */
const char FLT_CHARS[] = "rRsSfFdDxXpP";
const char *md_shortopts = "VQ:";
struct option md_longopts[] =
{
{NULL, no_argument, NULL, 0}
};
size_t md_longopts_size = sizeof (md_longopts);
int
md_parse_option (int c, const char *arg ATTRIBUTE_UNUSED)
{
switch (c)
{
/* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
should be emitted or not. FIXME: Not implemented. */
case 'Q':
break;
/* -V: SVR4 argument to print version ID. */
case 'V':
print_version_id ();
break;
default:
return 0;
}
return 1;
}
void
md_show_usage (FILE *stream)
{
fprintf (stream, _("\
-Q ignored\n\
-V print assembler version number\n"));
}
/* Extra expression types. */
#define O_lo16 O_md1
#define O_hi16 O_md2
#define O_ha16 O_md3
#define O_got O_md4
#define O_got_lo16 O_md5
#define O_got_hi16 O_md6
#define O_got_ha16 O_md7
#define O_plt O_md8
#define O_tls_gd O_md9
#define O_tls_gd_lo16 O_md10
#define O_tls_gd_hi16 O_md11
#define O_tls_gd_ha16 O_md12
#define O_tls_ie O_md13
#define O_tls_ie_lo16 O_md14
#define O_tls_ie_hi16 O_md15
#define O_tls_ie_ha16 O_md16
#define O_tls_le O_md17
#define O_tls_le_lo16 O_md18
#define O_tls_le_hi16 O_md19
#define O_tls_le_ha16 O_md20
#define O_tls_gd_call O_md21
#define O_tls_gd_add O_md22
#define O_tls_ie_load O_md23
static struct hash_control *special_operator_hash;
/* Hash tables for instruction mnemonic lookup. */
static struct hash_control *op_hash;
/* Hash table for spr lookup. */
static struct hash_control *spr_hash;
/* True temporarily while parsing an SPR expression. This changes the
* namespace to include SPR names. */
static int parsing_spr;
/* Are we currently inside `{ ... }'? */
static int inside_bundle;
struct tilepro_instruction
{
const struct tilepro_opcode *opcode;
tilepro_pipeline pipe;
expressionS operand_values[TILEPRO_MAX_OPERANDS];
};
/* This keeps track of the current bundle being built up. */
static struct tilepro_instruction
current_bundle[TILEPRO_MAX_INSTRUCTIONS_PER_BUNDLE];
/* Index in current_bundle for the next instruction to parse. */
static int current_bundle_index;
/* Allow 'r63' in addition to 'zero', etc. Normally we disallow this as
'zero' is not a real register, so using it accidentally would be a
nasty bug. For other registers, such as 'sp', code using multiple names
for the same physical register is excessively confusing.
The '.require_canonical_reg_names' pseudo-op turns this error on,
and the '.no_require_canonical_reg_names' pseudo-op turns this off.
By default the error is on. */
static int require_canonical_reg_names;
/* Allow bundles that do undefined or suspicious things like write
two different values to the same register at the same time.
The '.no_allow_suspicious_bundles' pseudo-op turns this error on,
and the '.allow_suspicious_bundles' pseudo-op turns this off. */
static int allow_suspicious_bundles;
/* A hash table of main processor registers, mapping each register name
to its index.
Furthermore, if the register number is greater than the number
of registers for that processor, the user used an illegal alias
for that register (e.g. r63 instead of zero), so we should generate
a warning. The attempted register number can be found by clearing
NONCANONICAL_REG_NAME_FLAG. */
static struct hash_control *main_reg_hash;
/* We cannot unambiguously store a 0 in a hash table and look it up,
so we OR in this flag to every canonical register. */
#define CANONICAL_REG_NAME_FLAG 0x1000
/* By default we disallow register aliases like r63, but we record
them in the hash table in case the .no_require_canonical_reg_names
directive is used. Noncanonical names have this value added to them. */
#define NONCANONICAL_REG_NAME_FLAG 0x2000
/* Discards flags for register hash table entries and returns the
reg number. */
#define EXTRACT_REGNO(p) ((p) & 63)
/* This function is called once, at assembler startup time. It should
set up all the tables, etc., that the MD part of the assembler will
need. */
void
md_begin (void)
{
const struct tilepro_opcode *op;
int i;
/* Guarantee text section is aligned. */
bfd_set_section_alignment (text_section,
TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES);
require_canonical_reg_names = 1;
allow_suspicious_bundles = 0;
current_bundle_index = 0;
inside_bundle = 0;
/* Initialize special operator hash table. */
special_operator_hash = hash_new ();
#define INSERT_SPECIAL_OP(name) \
hash_insert (special_operator_hash, #name, (void *)O_##name)
INSERT_SPECIAL_OP(lo16);
INSERT_SPECIAL_OP(hi16);
INSERT_SPECIAL_OP(ha16);
INSERT_SPECIAL_OP(got);
INSERT_SPECIAL_OP(got_lo16);
INSERT_SPECIAL_OP(got_hi16);
INSERT_SPECIAL_OP(got_ha16);
INSERT_SPECIAL_OP(plt);
INSERT_SPECIAL_OP(tls_gd);
INSERT_SPECIAL_OP(tls_gd_lo16);
INSERT_SPECIAL_OP(tls_gd_hi16);
INSERT_SPECIAL_OP(tls_gd_ha16);
INSERT_SPECIAL_OP(tls_ie);
INSERT_SPECIAL_OP(tls_ie_lo16);
INSERT_SPECIAL_OP(tls_ie_hi16);
INSERT_SPECIAL_OP(tls_ie_ha16);
INSERT_SPECIAL_OP(tls_le);
INSERT_SPECIAL_OP(tls_le_lo16);
INSERT_SPECIAL_OP(tls_le_hi16);
INSERT_SPECIAL_OP(tls_le_ha16);
INSERT_SPECIAL_OP(tls_gd_call);
INSERT_SPECIAL_OP(tls_gd_add);
INSERT_SPECIAL_OP(tls_ie_load);
#undef INSERT_SPECIAL_OP
/* Initialize op_hash hash table. */
op_hash = hash_new ();
for (op = &tilepro_opcodes[0]; op->name != NULL; op++)
{
const char *hash_err = hash_insert (op_hash, op->name, (void *)op);
if (hash_err != NULL)
{
as_fatal (_("Internal Error: Can't hash %s: %s"),
op->name, hash_err);
}
}
/* Initialize the spr hash table. */
parsing_spr = 0;
spr_hash = hash_new ();
for (i = 0; i < tilepro_num_sprs; i++)
hash_insert (spr_hash, tilepro_sprs[i].name,
(void *) &tilepro_sprs[i]);
/* Set up the main_reg_hash table. We use this instead of
* creating a symbol in the register section to avoid ambiguities
* with labels that have the same names as registers. */
main_reg_hash = hash_new ();
for (i = 0; i < TILEPRO_NUM_REGISTERS; i++)
{
char buf[64];
hash_insert (main_reg_hash, tilepro_register_names[i],
(void *) (long)(i | CANONICAL_REG_NAME_FLAG));
/* See if we should insert a noncanonical alias, like r63. */
sprintf (buf, "r%d", i);
if (strcmp (buf, tilepro_register_names[i]) != 0)
hash_insert (main_reg_hash, xstrdup (buf),
(void *) (long)(i | NONCANONICAL_REG_NAME_FLAG));
}
/* Insert obsolete backwards-compatibility register names. */
hash_insert (main_reg_hash, "io0",
(void *) (long) (TREG_IDN0 | CANONICAL_REG_NAME_FLAG));
hash_insert (main_reg_hash, "io1",
(void *) (long) (TREG_IDN1 | CANONICAL_REG_NAME_FLAG));
hash_insert (main_reg_hash, "us0",
(void *) (long) (TREG_UDN0 | CANONICAL_REG_NAME_FLAG));
hash_insert (main_reg_hash, "us1",
(void *) (long) (TREG_UDN1 | CANONICAL_REG_NAME_FLAG));
hash_insert (main_reg_hash, "us2",
(void *) (long) (TREG_UDN2 | CANONICAL_REG_NAME_FLAG));
hash_insert (main_reg_hash, "us3",
(void *) (long) (TREG_UDN3 | CANONICAL_REG_NAME_FLAG));
}
#define BUNDLE_TEMPLATE_MASK(p0, p1, p2) \
((p0) | ((p1) << 8) | ((p2) << 16))
#define BUNDLE_TEMPLATE(p0, p1, p2) \
{ { (p0), (p1), (p2) }, \
BUNDLE_TEMPLATE_MASK(1 << (p0), 1 << (p1), (1 << (p2))) \
}
#define NO_PIPELINE TILEPRO_NUM_PIPELINE_ENCODINGS
struct bundle_template
{
tilepro_pipeline pipe[TILEPRO_MAX_INSTRUCTIONS_PER_BUNDLE];
unsigned int pipe_mask;
};
static const struct bundle_template bundle_templates[] =
{
/* In Y format we must always have something in Y2, since it has
* no fnop, so this conveys that Y2 must always be used. */
BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y0, TILEPRO_PIPELINE_Y2, NO_PIPELINE),
BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y1, TILEPRO_PIPELINE_Y2, NO_PIPELINE),
BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y2, TILEPRO_PIPELINE_Y0, NO_PIPELINE),
BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y2, TILEPRO_PIPELINE_Y1, NO_PIPELINE),
/* Y format has three instructions. */
BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y0, TILEPRO_PIPELINE_Y1, TILEPRO_PIPELINE_Y2),
BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y0, TILEPRO_PIPELINE_Y2, TILEPRO_PIPELINE_Y1),
BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y1, TILEPRO_PIPELINE_Y0, TILEPRO_PIPELINE_Y2),
BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y1, TILEPRO_PIPELINE_Y2, TILEPRO_PIPELINE_Y0),
BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y2, TILEPRO_PIPELINE_Y0, TILEPRO_PIPELINE_Y1),
BUNDLE_TEMPLATE(TILEPRO_PIPELINE_Y2, TILEPRO_PIPELINE_Y1, TILEPRO_PIPELINE_Y0),
/* X format has only two instructions. */
BUNDLE_TEMPLATE(TILEPRO_PIPELINE_X0, TILEPRO_PIPELINE_X1, NO_PIPELINE),
BUNDLE_TEMPLATE(TILEPRO_PIPELINE_X1, TILEPRO_PIPELINE_X0, NO_PIPELINE)
};
static void
prepend_nop_to_bundle (tilepro_mnemonic mnemonic)
{
memmove (¤t_bundle[1], ¤t_bundle[0],
current_bundle_index * sizeof current_bundle[0]);
current_bundle[0].opcode = &tilepro_opcodes[mnemonic];
++current_bundle_index;
}
static tilepro_bundle_bits
insert_operand (tilepro_bundle_bits bits,
const struct tilepro_operand *operand,
int operand_value,
const char *file,
unsigned lineno)
{
/* Range-check the immediate. */
int num_bits = operand->num_bits;
operand_value >>= operand->rightshift;
if (bfd_check_overflow (operand->is_signed
? complain_overflow_signed
: complain_overflow_unsigned,
num_bits,
0,
bfd_arch_bits_per_address (stdoutput),
operand_value)
!= bfd_reloc_ok)
{
offsetT min, max;
if (operand->is_signed)
{
min = -(1 << (num_bits - 1));
max = (1 << (num_bits - 1)) - 1;
}
else
{
min = 0;
max = (1 << num_bits) - 1;
}
as_bad_value_out_of_range (_("operand"), operand_value, min, max,
file, lineno);
}
/* Write out the bits for the immediate. */
return bits | operand->insert (operand_value);
}
static int
apply_special_operator (operatorT op, int num)
{
switch (op)
{
case O_lo16:
return (signed short)num;
case O_hi16:
return (signed short)(num >> 16);
case O_ha16:
return (signed short)((num + 0x8000) >> 16);
default:
abort ();
}
}
static tilepro_bundle_bits
emit_tilepro_instruction (tilepro_bundle_bits bits,
int num_operands,
const unsigned char *operands,
expressionS *operand_values,
char *bundle_start)
{
int i;
for (i = 0; i < num_operands; i++)
{
const struct tilepro_operand *operand =
&tilepro_operands[operands[i]];
expressionS *operand_exp = &operand_values[i];
int is_pc_relative = operand->is_pc_relative;
if (operand_exp->X_op == O_register
|| (operand_exp->X_op == O_constant && !is_pc_relative))
{
/* We know what the bits are right now, so insert them. */
bits = insert_operand (bits, operand, operand_exp->X_add_number,
NULL, 0);
}
else
{
bfd_reloc_code_real_type reloc = operand->default_reloc;
expressionS subexp;
int die = 0, use_subexp = 0, require_symbol = 0;
fixS *fixP;
/* Take an expression like hi16(x) and turn it into x with
a different reloc type. */
switch (operand_exp->X_op)
{
#define HANDLE_OP16(suffix) \
switch (reloc) \
{ \
case BFD_RELOC_TILEPRO_IMM16_X0: \
reloc = BFD_RELOC_TILEPRO_IMM16_X0_##suffix; \
break; \
case BFD_RELOC_TILEPRO_IMM16_X1: \
reloc = BFD_RELOC_TILEPRO_IMM16_X1_##suffix; \
break; \
default: \
die = 1; \
break; \
} \
use_subexp = 1
case O_lo16:
HANDLE_OP16 (LO);
break;
case O_hi16:
HANDLE_OP16 (HI);
break;
case O_ha16:
HANDLE_OP16 (HA);
break;
case O_got:
HANDLE_OP16 (GOT);
require_symbol = 1;
break;
case O_got_lo16:
HANDLE_OP16 (GOT_LO);
require_symbol = 1;
break;
case O_got_hi16:
HANDLE_OP16 (GOT_HI);
require_symbol = 1;
break;
case O_got_ha16:
HANDLE_OP16 (GOT_HA);
require_symbol = 1;
break;
case O_tls_gd:
HANDLE_OP16 (TLS_GD);
require_symbol = 1;
break;
case O_tls_gd_lo16:
HANDLE_OP16 (TLS_GD_LO);
require_symbol = 1;
break;
case O_tls_gd_hi16:
HANDLE_OP16 (TLS_GD_HI);
require_symbol = 1;
break;
case O_tls_gd_ha16:
HANDLE_OP16 (TLS_GD_HA);
require_symbol = 1;
break;
case O_tls_ie:
HANDLE_OP16 (TLS_IE);
require_symbol = 1;
break;
case O_tls_ie_lo16:
HANDLE_OP16 (TLS_IE_LO);
require_symbol = 1;
break;
case O_tls_ie_hi16:
HANDLE_OP16 (TLS_IE_HI);
require_symbol = 1;
break;
case O_tls_ie_ha16:
HANDLE_OP16 (TLS_IE_HA);
require_symbol = 1;
break;
case O_tls_le:
HANDLE_OP16 (TLS_LE);
require_symbol = 1;
break;
case O_tls_le_lo16:
HANDLE_OP16 (TLS_LE_LO);
require_symbol = 1;
break;
case O_tls_le_hi16:
HANDLE_OP16 (TLS_LE_HI);
require_symbol = 1;
break;
case O_tls_le_ha16:
HANDLE_OP16 (TLS_LE_HA);
require_symbol = 1;
break;
#undef HANDLE_OP16
case O_plt:
switch (reloc)
{
case BFD_RELOC_TILEPRO_JOFFLONG_X1:
reloc = BFD_RELOC_TILEPRO_JOFFLONG_X1_PLT;
break;
default:
die = 1;
break;
}
use_subexp = 1;
require_symbol = 1;
break;
case O_tls_gd_call:
switch (reloc)
{
case BFD_RELOC_TILEPRO_JOFFLONG_X1:
reloc = BFD_RELOC_TILEPRO_TLS_GD_CALL;
break;
default:
die = 1;
break;
}
use_subexp = 1;
require_symbol = 1;
break;
case O_tls_gd_add:
switch (reloc)
{
case BFD_RELOC_TILEPRO_IMM8_X0:
reloc = BFD_RELOC_TILEPRO_IMM8_X0_TLS_GD_ADD;
break;
case BFD_RELOC_TILEPRO_IMM8_X1:
reloc = BFD_RELOC_TILEPRO_IMM8_X1_TLS_GD_ADD;
break;
case BFD_RELOC_TILEPRO_IMM8_Y0:
reloc = BFD_RELOC_TILEPRO_IMM8_Y0_TLS_GD_ADD;
break;
case BFD_RELOC_TILEPRO_IMM8_Y1:
reloc = BFD_RELOC_TILEPRO_IMM8_Y1_TLS_GD_ADD;
break;
default:
die = 1;
break;
}
use_subexp = 1;
require_symbol = 1;
break;
case O_tls_ie_load:
switch (reloc)
{
case BFD_RELOC_TILEPRO_IMM8_X1:
reloc = BFD_RELOC_TILEPRO_TLS_IE_LOAD;
break;
default:
die = 1;
break;
}
use_subexp = 1;
require_symbol = 1;
break;
default:
/* Do nothing. */
break;
}
if (die)
{
as_bad (_("Invalid operator for operand."));
}
else if (use_subexp)
{
expressionS *sval = NULL;
/* Now that we've changed the reloc, change ha16(x) into x,
etc. */
if (symbol_symbolS (operand_exp->X_add_symbol))
sval = symbol_get_value_expression (operand_exp->X_add_symbol);
if (sval && sval->X_md)
{
/* HACK: We used X_md to mark this symbol as a fake wrapper
around a real expression. To unwrap it, we just grab its
value here. */
operand_exp = sval;
if (require_symbol)
{
/* Look at the expression, and reject it if it's not a
plain symbol. */
if (operand_exp->X_op != O_symbol
|| operand_exp->X_add_number != 0)
as_bad (_("Operator may only be applied to symbols."));
}
}
else
{
/* The value of this expression is an actual symbol, so
turn that into an expression. */
memset (&subexp, 0, sizeof subexp);
subexp.X_op = O_symbol;
subexp.X_add_symbol = operand_exp->X_add_symbol;
operand_exp = &subexp;
}
}
/* Create a fixup to handle this later. */
fixP = fix_new_exp (frag_now,
bundle_start - frag_now->fr_literal,
(operand->num_bits + 7) >> 3,
operand_exp,
is_pc_relative,
reloc);
fixP->tc_fix_data = operand;
/* Don't do overflow checking if we are applying a function like
ha16. */
fixP->fx_no_overflow |= use_subexp;
}
}
return bits;
}
/* Detects and complains if two instructions in current_bundle write
to the same register, either implicitly or explicitly, or if a
read-only register is written. */
static void
check_illegal_reg_writes (void)
{
BFD_HOST_U_64_BIT all_regs_written = 0;
int j;
for (j = 0; j < current_bundle_index; j++)
{
const struct tilepro_instruction *instr = ¤t_bundle[j];
int k;
BFD_HOST_U_64_BIT regs =
((BFD_HOST_U_64_BIT)1) << instr->opcode->implicitly_written_register;
BFD_HOST_U_64_BIT conflict;
for (k = 0; k < instr->opcode->num_operands; k++)
{
const struct tilepro_operand *operand =
&tilepro_operands[instr->opcode->operands[instr->pipe][k]];
if (operand->is_dest_reg)
{
int regno = instr->operand_values[k].X_add_number;
BFD_HOST_U_64_BIT mask = ((BFD_HOST_U_64_BIT)1) << regno;
if ((mask & ( (((BFD_HOST_U_64_BIT)1) << TREG_IDN1)
| (((BFD_HOST_U_64_BIT)1) << TREG_UDN1)
| (((BFD_HOST_U_64_BIT)1) << TREG_UDN2)
| (((BFD_HOST_U_64_BIT)1) << TREG_UDN3))) != 0
&& !allow_suspicious_bundles)
{
as_bad (_("Writes to register '%s' are not allowed."),
tilepro_register_names[regno]);
}
regs |= mask;
}
}
/* Writing to the zero register doesn't count. */
regs &= ~(((BFD_HOST_U_64_BIT)1) << TREG_ZERO);
conflict = all_regs_written & regs;
if (conflict != 0 && !allow_suspicious_bundles)
{
/* Find which register caused the conflict. */
const char *conflicting_reg_name = "???";
int i;
for (i = 0; i < TILEPRO_NUM_REGISTERS; i++)
{
if (((conflict >> i) & 1) != 0)
{
conflicting_reg_name = tilepro_register_names[i];
break;
}
}
as_bad (_("Two instructions in the same bundle both write "
"to register %s, which is not allowed."),
conflicting_reg_name);
}
all_regs_written |= regs;
}
}
static void
tilepro_flush_bundle (void)
{
unsigned i;
int j, addr_mod;
unsigned compatible_pipes;
const struct bundle_template *match;
char *f;
inside_bundle = 0;
switch (current_bundle_index)
{
case 0:
/* No instructions. */
return;
case 1:
if (current_bundle[0].opcode->can_bundle)
{
/* Simplify later logic by adding an explicit fnop. */
prepend_nop_to_bundle (TILEPRO_OPC_FNOP);
}
else
{
/* This instruction cannot be bundled with anything else.
Prepend an explicit 'nop', rather than an 'fnop', because
fnops can be replaced by later binary-processing tools
while nops cannot. */
prepend_nop_to_bundle (TILEPRO_OPC_NOP);
}
break;
default:
if (!allow_suspicious_bundles)
{
/* Make sure all instructions can be bundled with other
instructions. */
const struct tilepro_opcode *cannot_bundle = NULL;
bfd_boolean seen_non_nop = FALSE;
for (j = 0; j < current_bundle_index; j++)
{
const struct tilepro_opcode *op = current_bundle[j].opcode;
if (!op->can_bundle && cannot_bundle == NULL)
cannot_bundle = op;
else if (op->mnemonic != TILEPRO_OPC_NOP
&& op->mnemonic != TILEPRO_OPC_INFO
&& op->mnemonic != TILEPRO_OPC_INFOL)
seen_non_nop = TRUE;
}
if (cannot_bundle != NULL && seen_non_nop)
{
current_bundle_index = 0;
as_bad (_("'%s' may not be bundled with other instructions."),
cannot_bundle->name);
return;
}
}
break;
}
compatible_pipes =
BUNDLE_TEMPLATE_MASK(current_bundle[0].opcode->pipes,
current_bundle[1].opcode->pipes,
(current_bundle_index == 3
? current_bundle[2].opcode->pipes
: (1 << NO_PIPELINE)));
/* Find a template that works, if any. */
match = NULL;
for (i = 0; i < sizeof bundle_templates / sizeof bundle_templates[0]; i++)
{
const struct bundle_template *b = &bundle_templates[i];
if ((b->pipe_mask & compatible_pipes) == b->pipe_mask)
{
match = b;
break;
}
}
if (match == NULL)
{
current_bundle_index = 0;
as_bad (_("Invalid combination of instructions for bundle."));
return;
}
/* If the section seems to have no alignment set yet, go ahead and
make it large enough to hold code. */
if (bfd_section_alignment (now_seg) == 0)
bfd_set_section_alignment (now_seg,
TILEPRO_LOG2_BUNDLE_ALIGNMENT_IN_BYTES);
for (j = 0; j < current_bundle_index; j++)
current_bundle[j].pipe = match->pipe[j];
if (current_bundle_index == 2 && !tilepro_is_x_pipeline(match->pipe[0]))
{
/* We are in Y mode with only two instructions, so add an FNOP. */
prepend_nop_to_bundle (TILEPRO_OPC_FNOP);
/* Figure out what pipe the fnop must be in via arithmetic.
* p0 + p1 + p2 must sum to the sum of TILEPRO_PIPELINE_Y[012]. */
current_bundle[0].pipe =
(tilepro_pipeline)((TILEPRO_PIPELINE_Y0
+ TILEPRO_PIPELINE_Y1
+ TILEPRO_PIPELINE_Y2) -
(current_bundle[1].pipe + current_bundle[2].pipe));
}
check_illegal_reg_writes ();
f = frag_more (TILEPRO_BUNDLE_SIZE_IN_BYTES);
/* Check to see if this bundle is at an offset that is a multiple of 8-bytes
from the start of the frag. */
addr_mod = frag_now_fix () & (TILEPRO_BUNDLE_ALIGNMENT_IN_BYTES - 1);
if (frag_now->has_code && frag_now->insn_addr != addr_mod)
as_bad (_("instruction address is not a multiple of 8"));
frag_now->insn_addr = addr_mod;
frag_now->has_code = 1;
tilepro_bundle_bits bits = 0;
for (j = 0; j < current_bundle_index; j++)
{
struct tilepro_instruction *instr = ¤t_bundle[j];
tilepro_pipeline pipeline = instr->pipe;
const struct tilepro_opcode *opcode = instr->opcode;
bits |= emit_tilepro_instruction (opcode->fixed_bit_values[pipeline],
opcode->num_operands,
&opcode->operands[pipeline][0],
instr->operand_values,
f);
}
number_to_chars_littleendian (f, (unsigned int)bits, 4);
number_to_chars_littleendian (f + 4, (unsigned int)(bits >> 32), 4);
current_bundle_index = 0;
/* Emit DWARF2 debugging information. */
dwarf2_emit_insn (TILEPRO_BUNDLE_SIZE_IN_BYTES);
}
/* Extend the expression parser to handle hi16(label), etc.
as well as SPR names when in the context of parsing an SPR. */
int
tilepro_parse_name (char *name, expressionS *e, char *nextcharP)
{
operatorT op = O_illegal;
if (parsing_spr)
{
void *val = hash_find (spr_hash, name);
if (val == NULL)
return 0;
memset (e, 0, sizeof *e);
e->X_op = O_constant;
e->X_add_number = ((const struct tilepro_spr *)val)->number;
return 1;
}
if (*nextcharP != '(')
{
/* hi16, etc. not followed by a paren is just a label with that
name. */
return 0;
}
else
{
/* Look up the operator in our table. */
void *val = hash_find (special_operator_hash, name);
if (val == 0)
return 0;
op = (operatorT)(long)val;
}
/* Restore old '(' and skip it. */
*input_line_pointer = '(';
++input_line_pointer;
expression (e);
if (*input_line_pointer != ')')
{
as_bad (_("Missing ')'"));
*nextcharP = *input_line_pointer;
return 0;
}
/* Skip ')'. */
++input_line_pointer;
if (e->X_op == O_register || e->X_op == O_absent)
{
as_bad (_("Invalid expression."));
e->X_op = O_constant;
e->X_add_number = 0;
}
else
{
/* Wrap subexpression with a unary operator. */
symbolS *sym = make_expr_symbol (e);
if (sym != e->X_add_symbol)
{
/* HACK: mark this symbol as a temporary wrapper around a proper
expression, so we can unwrap it later once we have communicated
the relocation type. */
symbol_get_value_expression (sym)->X_md = 1;
}
memset (e, 0, sizeof *e);
e->X_op = op;
e->X_add_symbol = sym;
e->X_add_number = 0;
}
*nextcharP = *input_line_pointer;
return 1;
}
/* Parses an expression which must be a register name. */
static void
parse_reg_expression (expressionS* expression)
{
/* Zero everything to make sure we don't miss any flags. */
memset (expression, 0, sizeof *expression);
char *regname;
char terminating_char = get_symbol_name (®name);
void* pval = hash_find (main_reg_hash, regname);
if (pval == NULL)
as_bad (_("Expected register, got '%s'."), regname);
int regno_and_flags = (int)(size_t)pval;
int regno = EXTRACT_REGNO(regno_and_flags);
if ((regno_and_flags & NONCANONICAL_REG_NAME_FLAG)
&& require_canonical_reg_names)
as_warn (_("Found use of non-canonical register name %s; "
"use %s instead."),
regname, tilepro_register_names[regno]);
/* Restore the old character following the register name. */
(void) restore_line_pointer (terminating_char);
/* Fill in the expression fields to indicate it's a register. */
expression->X_op = O_register;
expression->X_add_number = regno;
}
/* Parses and type-checks comma-separated operands in input_line_pointer. */
static void
parse_operands (const char *opcode_name,
const unsigned char *operands,
int num_operands,
expressionS *operand_values)
{
int i;
memset (operand_values, 0, num_operands * sizeof operand_values[0]);
SKIP_WHITESPACE ();
for (i = 0; i < num_operands; i++)
{
tilepro_operand_type type = tilepro_operands[operands[i]].type;
SKIP_WHITESPACE ();
if (type == TILEPRO_OP_TYPE_REGISTER)
{
parse_reg_expression (&operand_values[i]);
}
else if (*input_line_pointer == '}')
{
operand_values[i].X_op = O_absent;
}
else if (type == TILEPRO_OP_TYPE_SPR)
{
/* Modify the expression parser to add SPRs to the namespace. */
parsing_spr = 1;
expression (&operand_values[i]);
parsing_spr = 0;
}
else
{
expression (&operand_values[i]);
}
SKIP_WHITESPACE ();
if (i + 1 < num_operands)
{
int separator = (unsigned char)*input_line_pointer++;
if (is_end_of_line[separator] || (separator == '}'))
{
as_bad (_("Too few operands to '%s'."), opcode_name);
return;
}
else if (separator != ',')
{
as_bad (_("Unexpected character '%c' after operand %d to %s."),
(char)separator, i + 1, opcode_name);
return;
}
}
/* Arbitrarily use the first valid pipe to get the operand type,
since they are all the same. */
switch (tilepro_operands[operands[i]].type)
{
case TILEPRO_OP_TYPE_REGISTER:
/* Handled in parse_reg_expression already. */
break;
case TILEPRO_OP_TYPE_SPR:
/* Fall through */
case TILEPRO_OP_TYPE_IMMEDIATE:
/* Fall through */
case TILEPRO_OP_TYPE_ADDRESS:
if ( operand_values[i].X_op == O_register
|| operand_values[i].X_op == O_illegal
|| operand_values[i].X_op == O_absent)
as_bad (_("Expected immediate expression"));
break;
default:
abort ();
}
}
if (!is_end_of_line[(unsigned char)*input_line_pointer])
{
switch (*input_line_pointer)
{
case '}':
if (!inside_bundle)
as_bad (_("Found '}' when not bundling."));
++input_line_pointer;
inside_bundle = 0;
demand_empty_rest_of_line ();
break;
case ',':
as_bad (_("Too many operands"));
break;
default:
/* Use default error for unrecognized garbage. */
demand_empty_rest_of_line ();
break;
}
}
}
/* This is the guts of the machine-dependent assembler. STR points to a
machine dependent instruction. This function is supposed to emit
the frags/bytes it assembles to. */
void
md_assemble (char *str)
{
char old_char;
size_t opname_len;
char *old_input_line_pointer;
const struct tilepro_opcode *op;
int first_pipe;
/* Split off the opcode and look it up. */
opname_len = strcspn (str, " {}");
old_char = str[opname_len];
str[opname_len] = '\0';
op = hash_find(op_hash, str);
str[opname_len] = old_char;
if (op == NULL)
{
as_bad (_("Unknown opcode `%.*s'."), (int)opname_len, str);
return;
}
/* Prepare to parse the operands. */
old_input_line_pointer = input_line_pointer;
input_line_pointer = str + opname_len;
SKIP_WHITESPACE ();
if (current_bundle_index == TILEPRO_MAX_INSTRUCTIONS_PER_BUNDLE)
{
as_bad (_("Too many instructions for bundle."));
tilepro_flush_bundle ();
}
/* Make sure we have room for the upcoming bundle before we
create any fixups. Otherwise if we have to switch to a new
frag the fixup dot_value fields will be wrong. */
frag_grow (TILEPRO_BUNDLE_SIZE_IN_BYTES);
/* Find a valid pipe for this opcode. */
for (first_pipe = 0; (op->pipes & (1 << first_pipe)) == 0; first_pipe++)
;
/* Call the function that assembles this instruction. */
current_bundle[current_bundle_index].opcode = op;
parse_operands (op->name,
&op->operands[first_pipe][0],
op->num_operands,
current_bundle[current_bundle_index].operand_values);
++current_bundle_index;
/* Restore the saved value of input_line_pointer. */
input_line_pointer = old_input_line_pointer;
/* If we weren't inside curly braces, go ahead and emit
this lone instruction as a bundle right now. */
if (!inside_bundle)
tilepro_flush_bundle ();
}
static void
s_require_canonical_reg_names (int require)
{
demand_empty_rest_of_line ();
require_canonical_reg_names = require;
}
static void
s_allow_suspicious_bundles (int allow)
{
demand_empty_rest_of_line ();
allow_suspicious_bundles = allow;
}
const pseudo_typeS md_pseudo_table[] =
{
{"align", s_align_bytes, 0}, /* Defaulting is invalid (0). */
{"word", cons, 4},
{"require_canonical_reg_names", s_require_canonical_reg_names, 1 },
{"no_require_canonical_reg_names", s_require_canonical_reg_names, 0 },
{"allow_suspicious_bundles", s_allow_suspicious_bundles, 1 },
{"no_allow_suspicious_bundles", s_allow_suspicious_bundles, 0 },
{ NULL, 0, 0 }
};
/* Turn the string pointed to by litP into a floating point constant
of type TYPE, and emit the appropriate bytes. The number of
LITTLENUMS emitted is stored in *SIZEP. An error message is
returned, or NULL on OK. */
const char *
md_atof (int type, char *litP, int *sizeP)
{
int prec;
LITTLENUM_TYPE words[MAX_LITTLENUMS];
LITTLENUM_TYPE *wordP;
char *t;
switch (type)
{
case 'f':
case 'F':
prec = 2;
break;
case 'd':
case 'D':
prec = 4;
break;
default:
*sizeP = 0;
return _("Bad call to md_atof ()");
}
t = atof_ieee (input_line_pointer, type, words);
if (t)
input_line_pointer = t;
*sizeP = prec * sizeof (LITTLENUM_TYPE);
/* This loops outputs the LITTLENUMs in REVERSE order; in accord with
the bigendian 386. */
for (wordP = words + prec - 1; prec--;)
{
md_number_to_chars (litP, (valueT) (*wordP--), sizeof (LITTLENUM_TYPE));
litP += sizeof (LITTLENUM_TYPE);
}
return 0;
}
/* We have no need to default values of symbols. */
symbolS *
md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
{
return NULL;
}
void
tilepro_cons_fix_new (fragS *frag,
int where,
int nbytes,
expressionS *exp)
{
expressionS subexp;
bfd_reloc_code_real_type reloc = BFD_RELOC_NONE;
int no_overflow = 0;
fixS *fixP;
/* See if it's one of our special functions. */
switch (exp->X_op)
{
case O_lo16:
reloc = BFD_RELOC_LO16;
no_overflow = 1;
break;
case O_hi16:
reloc = BFD_RELOC_HI16;
no_overflow = 1;
break;
case O_ha16:
reloc = BFD_RELOC_HI16_S;
no_overflow = 1;
break;
default:
/* Do nothing. */
break;
}
if (reloc != BFD_RELOC_NONE)
{
if (nbytes != 2)
{
as_bad (_("This operator only produces two byte values."));
nbytes = 2;
}
memset (&subexp, 0, sizeof subexp);
subexp.X_op = O_symbol;
subexp.X_add_symbol = exp->X_add_symbol;
exp = &subexp;
}
else
{
switch (nbytes)
{
case 1:
reloc = BFD_RELOC_8;
break;
case 2:
reloc = BFD_RELOC_16;
break;
case 4:
reloc = BFD_RELOC_32;
break;
case 8:
reloc = BFD_RELOC_64;
break;
default:
as_bad (_("unsupported BFD relocation size %d"), nbytes);
reloc = BFD_RELOC_32;
break;
}
}
fixP = fix_new_exp (frag, where, nbytes, exp, 0, reloc);
fixP->tc_fix_data = NULL;
fixP->fx_no_overflow |= no_overflow;
}
void
md_apply_fix (fixS *fixP, valueT * valP, segT seg ATTRIBUTE_UNUSED)
{
const struct tilepro_operand *operand;
valueT value = *valP;
char *p;
/* Leave these for the linker. */
if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
|| fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
return;
if (fixP->fx_subsy != (symbolS *) NULL)
{
/* We can't actually support subtracting a symbol. */
as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex"));
}
/* Correct relocation types for pc-relativeness. */
switch (fixP->fx_r_type)
{
#define FIX_PCREL(rtype) \
case rtype: \
if (fixP->fx_pcrel) \
fixP->fx_r_type = rtype##_PCREL; \
break; \
\
case rtype##_PCREL: \
if (!fixP->fx_pcrel) \
fixP->fx_r_type = rtype; \
break
FIX_PCREL (BFD_RELOC_8);
FIX_PCREL (BFD_RELOC_16);
FIX_PCREL (BFD_RELOC_32);
FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X0);
FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X1);
FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X0_LO);
FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X1_LO);
FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X0_HI);
FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X1_HI);
FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X0_HA);
FIX_PCREL (BFD_RELOC_TILEPRO_IMM16_X1_HA);
#undef FIX_PCREL
default:
/* Do nothing */
break;
}
if (fixP->fx_addsy != NULL)
{
#ifdef OBJ_ELF
switch (fixP->fx_r_type)
{
case BFD_RELOC_TILEPRO_IMM8_X0_TLS_GD_ADD:
case BFD_RELOC_TILEPRO_IMM8_X1_TLS_GD_ADD:
case BFD_RELOC_TILEPRO_IMM8_Y0_TLS_GD_ADD:
case BFD_RELOC_TILEPRO_IMM8_Y1_TLS_GD_ADD:
case BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD:
case BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD:
case BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_LO:
case BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_LO:
case BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HI:
case BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HI:
case BFD_RELOC_TILEPRO_IMM16_X0_TLS_GD_HA:
case BFD_RELOC_TILEPRO_IMM16_X1_TLS_GD_HA:
case BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE:
case BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE:
case BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_LO:
case BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_LO:
case BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HI:
case BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HI:
case BFD_RELOC_TILEPRO_IMM16_X0_TLS_IE_HA:
case BFD_RELOC_TILEPRO_IMM16_X1_TLS_IE_HA:
case BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE:
case BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE:
case BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_LO:
case BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_LO:
case BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HI:
case BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HI:
case BFD_RELOC_TILEPRO_IMM16_X0_TLS_LE_HA:
case BFD_RELOC_TILEPRO_IMM16_X1_TLS_LE_HA:
case BFD_RELOC_TILEPRO_TLS_GD_CALL:
case BFD_RELOC_TILEPRO_TLS_IE_LOAD:
case BFD_RELOC_TILEPRO_TLS_DTPMOD32:
case BFD_RELOC_TILEPRO_TLS_DTPOFF32:
case BFD_RELOC_TILEPRO_TLS_TPOFF32:
S_SET_THREAD_LOCAL (fixP->fx_addsy);
break;
default:
/* Do nothing */
break;
}
#endif
return;
}
/* Apply lo16, hi16, ha16, etc. munging. */
switch (fixP->fx_r_type)
{
case BFD_RELOC_LO16:
case BFD_RELOC_TILEPRO_IMM16_X0_LO:
case BFD_RELOC_TILEPRO_IMM16_X1_LO:
case BFD_RELOC_TILEPRO_IMM16_X0_LO_PCREL:
case BFD_RELOC_TILEPRO_IMM16_X1_LO_PCREL:
*valP = value = apply_special_operator (O_lo16, value);
break;
case BFD_RELOC_HI16:
case BFD_RELOC_TILEPRO_IMM16_X0_HI:
case BFD_RELOC_TILEPRO_IMM16_X1_HI:
case BFD_RELOC_TILEPRO_IMM16_X0_HI_PCREL:
case BFD_RELOC_TILEPRO_IMM16_X1_HI_PCREL:
*valP = value = apply_special_operator (O_hi16, value);
break;
case BFD_RELOC_HI16_S:
case BFD_RELOC_TILEPRO_IMM16_X0_HA:
case BFD_RELOC_TILEPRO_IMM16_X1_HA:
case BFD_RELOC_TILEPRO_IMM16_X0_HA_PCREL:
case BFD_RELOC_TILEPRO_IMM16_X1_HA_PCREL:
*valP = value = apply_special_operator (O_ha16, value);
break;
default:
/* Do nothing */
break;
}
p = fixP->fx_frag->fr_literal + fixP->fx_where;
operand = fixP->tc_fix_data;
if (operand != NULL)
{
/* It's an instruction operand. */
tilepro_bundle_bits bits =
insert_operand (0, operand, value, fixP->fx_file, fixP->fx_line);
/* Note that we might either be writing out bits for a bundle or a
static network instruction, which are different sizes, so it's
important to stop touching memory once we run out of bits. ORing in
values is OK since we know the existing bits for this operand are
zero. */
for (; bits != 0; bits >>= 8)
*p++ |= (char)bits;
}
else
{
/* Some other kind of relocation. */
switch (fixP->fx_r_type)
{
case BFD_RELOC_8:
case BFD_RELOC_8_PCREL:
md_number_to_chars (p, value, 1);
break;
case BFD_RELOC_16:
case BFD_RELOC_16_PCREL:
md_number_to_chars (p, value, 2);
break;
case BFD_RELOC_32:
case BFD_RELOC_32_PCREL:
md_number_to_chars (p, value, 4);
break;
default:
/* Leave it for the linker. */
return;
}
}
fixP->fx_done = 1;
}
/* Generate the BFD reloc to be stuck in the object file from the
fixup used internally in the assembler. */
arelent *
tc_gen_reloc (asection *sec ATTRIBUTE_UNUSED, fixS *fixp)
{
arelent *reloc;
reloc = XNEW (arelent);
reloc->sym_ptr_ptr = XNEW (asymbol *);
*reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
/* Make sure none of our internal relocations make it this far.
They'd better have been fully resolved by this point. */
gas_assert ((int) fixp->fx_r_type > 0);
reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
if (reloc->howto == NULL)
{
as_bad_where (fixp->fx_file, fixp->fx_line,
_("cannot represent `%s' relocation in object file"),
bfd_get_reloc_code_name (fixp->fx_r_type));
return NULL;
}
if (!fixp->fx_pcrel != !reloc->howto->pc_relative)
{
as_fatal (_("internal error? cannot generate `%s' relocation (%d, %d)"),
bfd_get_reloc_code_name (fixp->fx_r_type),
fixp->fx_pcrel, reloc->howto->pc_relative);
}
gas_assert (!fixp->fx_pcrel == !reloc->howto->pc_relative);
reloc->addend = fixp->fx_offset;
return reloc;
}
/* The location from which a PC relative jump should be calculated,
given a PC relative reloc. */
long
md_pcrel_from (fixS *fixP)
{
return fixP->fx_frag->fr_address + fixP->fx_where;
}
/* Return 1 if it's OK to adjust a reloc by replacing the symbol with
a section symbol plus some offset. */
int
tilepro_fix_adjustable (fixS *fix)
{
/* Prevent all adjustments to global symbols */
if (S_IS_EXTERNAL (fix->fx_addsy) || S_IS_WEAK (fix->fx_addsy))
return 0;
return 1;
}
int
tilepro_unrecognized_line (int ch)
{
switch (ch)
{
case '{':
if (inside_bundle)
{
as_bad (_("Found '{' when already bundling."));
}
else
{
inside_bundle = 1;
current_bundle_index = 0;
}
return 1;
case '}':
if (!inside_bundle)
{
as_bad (_("Found '}' when not bundling."));
}
else
{
tilepro_flush_bundle ();
}
/* Allow '{' to follow on the same line. We also allow ";;", but that
happens automatically because ';' is an end of line marker. */
SKIP_WHITESPACE ();
if (input_line_pointer[0] == '{')
{
input_line_pointer++;
return tilepro_unrecognized_line ('{');
}
demand_empty_rest_of_line ();
return 1;
default:
break;
}
/* Not a valid line. */
return 0;
}
/* This is called from HANDLE_ALIGN in write.c. Fill in the contents
of an rs_align_code fragment. */
void
tilepro_handle_align (fragS *fragp)
{
int bytes, fix;
char *p;
if (fragp->fr_type != rs_align_code)
return;
bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix;
p = fragp->fr_literal + fragp->fr_fix;
fix = 0;
/* Determine the bits for NOP. */
const struct tilepro_opcode *nop_opcode =
&tilepro_opcodes[TILEPRO_OPC_NOP];
tilepro_bundle_bits nop =
( nop_opcode->fixed_bit_values[TILEPRO_PIPELINE_X0]
| nop_opcode->fixed_bit_values[TILEPRO_PIPELINE_X1]);
if ((bytes & (TILEPRO_BUNDLE_SIZE_IN_BYTES - 1)) != 0)
{
fix = bytes & (TILEPRO_BUNDLE_SIZE_IN_BYTES - 1);
memset (p, 0, fix);
p += fix;
bytes -= fix;
}
number_to_chars_littleendian (p, (unsigned int)nop, 4);
number_to_chars_littleendian (p + 4, (unsigned int)(nop >> 32), 4);
fragp->fr_fix += fix;
fragp->fr_var = TILEPRO_BUNDLE_SIZE_IN_BYTES;
}
/* Standard calling conventions leave the CFA at SP on entry. */
void
tilepro_cfi_frame_initial_instructions (void)
{
cfi_add_CFA_def_cfa_register (54);
}
int
tc_tilepro_regname_to_dw2regnum (char *regname)
{
int i;
for (i = 0; i < TILEPRO_NUM_REGISTERS; i++)
{
if (!strcmp (regname, tilepro_register_names[i]))
return i;
}
return -1;
}
|