summaryrefslogtreecommitdiffstats
path: root/tools/perf/util/annotate.c
blob: ea7e0de4b9c1445ae56f1ff04cd6d0e9b97cc5d2 (plain)
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
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
/*
 * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
 *
 * Parts came from builtin-annotate.c, see those files for further
 * copyright notes.
 *
 * Released under the GPL v2. (and only v2, not any later version)
 */

#include "util.h"
#include "ui/ui.h"
#include "sort.h"
#include "build-id.h"
#include "color.h"
#include "cache.h"
#include "symbol.h"
#include "debug.h"
#include "annotate.h"
#include "evsel.h"
#include "block-range.h"
#include "arch/common.h"
#include <regex.h>
#include <pthread.h>
#include <linux/bitops.h>
#include <sys/utsname.h>

const char 	*disassembler_style;
const char	*objdump_path;
static regex_t	 file_lineno;

static struct ins_ops *ins__find(struct arch *arch, const char *name);
static void ins__sort(struct arch *arch);
static int disasm_line__parse(char *line, const char **namep, char **rawp);

struct arch {
	const char	*name;
	struct ins	*instructions;
	size_t		nr_instructions;
	size_t		nr_instructions_allocated;
	struct ins_ops  *(*associate_instruction_ops)(struct arch *arch, const char *name);
	bool		sorted_instructions;
	bool		initialized;
	void		*priv;
	int		(*init)(struct arch *arch);
	struct		{
		char comment_char;
		char skip_functions_char;
	} objdump;
};

static struct ins_ops call_ops;
static struct ins_ops dec_ops;
static struct ins_ops jump_ops;
static struct ins_ops mov_ops;
static struct ins_ops nop_ops;
static struct ins_ops lock_ops;
static struct ins_ops ret_ops;

static int arch__grow_instructions(struct arch *arch)
{
	struct ins *new_instructions;
	size_t new_nr_allocated;

	if (arch->nr_instructions_allocated == 0 && arch->instructions)
		goto grow_from_non_allocated_table;

	new_nr_allocated = arch->nr_instructions_allocated + 128;
	new_instructions = realloc(arch->instructions, new_nr_allocated * sizeof(struct ins));
	if (new_instructions == NULL)
		return -1;

out_update_instructions:
	arch->instructions = new_instructions;
	arch->nr_instructions_allocated = new_nr_allocated;
	return 0;

grow_from_non_allocated_table:
	new_nr_allocated = arch->nr_instructions + 128;
	new_instructions = calloc(new_nr_allocated, sizeof(struct ins));
	if (new_instructions == NULL)
		return -1;

	memcpy(new_instructions, arch->instructions, arch->nr_instructions);
	goto out_update_instructions;
}

static int arch__associate_ins_ops(struct arch* arch, const char *name, struct ins_ops *ops)
{
	struct ins *ins;

	if (arch->nr_instructions == arch->nr_instructions_allocated &&
	    arch__grow_instructions(arch))
		return -1;

	ins = &arch->instructions[arch->nr_instructions];
	ins->name = strdup(name);
	if (!ins->name)
		return -1;

	ins->ops  = ops;
	arch->nr_instructions++;

	ins__sort(arch);
	return 0;
}

#include "arch/arm/annotate/instructions.c"
#include "arch/arm64/annotate/instructions.c"
#include "arch/x86/annotate/instructions.c"
#include "arch/powerpc/annotate/instructions.c"

static struct arch architectures[] = {
	{
		.name = "arm",
		.init = arm__annotate_init,
	},
	{
		.name = "arm64",
		.init = arm64__annotate_init,
	},
	{
		.name = "x86",
		.instructions = x86__instructions,
		.nr_instructions = ARRAY_SIZE(x86__instructions),
		.objdump =  {
			.comment_char = '#',
		},
	},
	{
		.name = "powerpc",
		.init = powerpc__annotate_init,
	},
};

static void ins__delete(struct ins_operands *ops)
{
	if (ops == NULL)
		return;
	zfree(&ops->source.raw);
	zfree(&ops->source.name);
	zfree(&ops->target.raw);
	zfree(&ops->target.name);
}

static int ins__raw_scnprintf(struct ins *ins, char *bf, size_t size,
			      struct ins_operands *ops)
{
	return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->raw);
}

int ins__scnprintf(struct ins *ins, char *bf, size_t size,
		  struct ins_operands *ops)
{
	if (ins->ops->scnprintf)
		return ins->ops->scnprintf(ins, bf, size, ops);

	return ins__raw_scnprintf(ins, bf, size, ops);
}

static int call__parse(struct arch *arch, struct ins_operands *ops, struct map *map)
{
	char *endptr, *tok, *name;

	ops->target.addr = strtoull(ops->raw, &endptr, 16);

	name = strchr(endptr, '<');
	if (name == NULL)
		goto indirect_call;

	name++;

	if (arch->objdump.skip_functions_char &&
	    strchr(name, arch->objdump.skip_functions_char))
		return -1;

	tok = strchr(name, '>');
	if (tok == NULL)
		return -1;

	*tok = '\0';
	ops->target.name = strdup(name);
	*tok = '>';

	return ops->target.name == NULL ? -1 : 0;

indirect_call:
	tok = strchr(endptr, '*');
	if (tok == NULL) {
		struct symbol *sym = map__find_symbol(map, map->map_ip(map, ops->target.addr));
		if (sym != NULL)
			ops->target.name = strdup(sym->name);
		else
			ops->target.addr = 0;
		return 0;
	}

	ops->target.addr = strtoull(tok + 1, NULL, 16);
	return 0;
}

static int call__scnprintf(struct ins *ins, char *bf, size_t size,
			   struct ins_operands *ops)
{
	if (ops->target.name)
		return scnprintf(bf, size, "%-6.6s %s", ins->name, ops->target.name);

	if (ops->target.addr == 0)
		return ins__raw_scnprintf(ins, bf, size, ops);

	return scnprintf(bf, size, "%-6.6s *%" PRIx64, ins->name, ops->target.addr);
}

static struct ins_ops call_ops = {
	.parse	   = call__parse,
	.scnprintf = call__scnprintf,
};

bool ins__is_call(const struct ins *ins)
{
	return ins->ops == &call_ops;
}

static int jump__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused)
{
	const char *s = strchr(ops->raw, '+');

	ops->target.addr = strtoull(ops->raw, NULL, 16);

	if (s++ != NULL)
		ops->target.offset = strtoull(s, NULL, 16);
	else
		ops->target.offset = UINT64_MAX;

	return 0;
}

static int jump__scnprintf(struct ins *ins, char *bf, size_t size,
			   struct ins_operands *ops)
{
	if (!ops->target.addr)
		return ins__raw_scnprintf(ins, bf, size, ops);

	return scnprintf(bf, size, "%-6.6s %" PRIx64, ins->name, ops->target.offset);
}

static struct ins_ops jump_ops = {
	.parse	   = jump__parse,
	.scnprintf = jump__scnprintf,
};

bool ins__is_jump(const struct ins *ins)
{
	return ins->ops == &jump_ops;
}

static int comment__symbol(char *raw, char *comment, u64 *addrp, char **namep)
{
	char *endptr, *name, *t;

	if (strstr(raw, "(%rip)") == NULL)
		return 0;

	*addrp = strtoull(comment, &endptr, 16);
	name = strchr(endptr, '<');
	if (name == NULL)
		return -1;

	name++;

	t = strchr(name, '>');
	if (t == NULL)
		return 0;

	*t = '\0';
	*namep = strdup(name);
	*t = '>';

	return 0;
}

static int lock__parse(struct arch *arch, struct ins_operands *ops, struct map *map)
{
	ops->locked.ops = zalloc(sizeof(*ops->locked.ops));
	if (ops->locked.ops == NULL)
		return 0;

	if (disasm_line__parse(ops->raw, &ops->locked.ins.name, &ops->locked.ops->raw) < 0)
		goto out_free_ops;

	ops->locked.ins.ops = ins__find(arch, ops->locked.ins.name);

	if (ops->locked.ins.ops == NULL)
		goto out_free_ops;

	if (ops->locked.ins.ops->parse &&
	    ops->locked.ins.ops->parse(arch, ops->locked.ops, map) < 0)
		goto out_free_ops;

	return 0;

out_free_ops:
	zfree(&ops->locked.ops);
	return 0;
}

static int lock__scnprintf(struct ins *ins, char *bf, size_t size,
			   struct ins_operands *ops)
{
	int printed;

	if (ops->locked.ins.ops == NULL)
		return ins__raw_scnprintf(ins, bf, size, ops);

	printed = scnprintf(bf, size, "%-6.6s ", ins->name);
	return printed + ins__scnprintf(&ops->locked.ins, bf + printed,
					size - printed, ops->locked.ops);
}

static void lock__delete(struct ins_operands *ops)
{
	struct ins *ins = &ops->locked.ins;

	if (ins->ops && ins->ops->free)
		ins->ops->free(ops->locked.ops);
	else
		ins__delete(ops->locked.ops);

	zfree(&ops->locked.ops);
	zfree(&ops->target.raw);
	zfree(&ops->target.name);
}

static struct ins_ops lock_ops = {
	.free	   = lock__delete,
	.parse	   = lock__parse,
	.scnprintf = lock__scnprintf,
};

static int mov__parse(struct arch *arch, struct ins_operands *ops, struct map *map __maybe_unused)
{
	char *s = strchr(ops->raw, ','), *target, *comment, prev;

	if (s == NULL)
		return -1;

	*s = '\0';
	ops->source.raw = strdup(ops->raw);
	*s = ',';

	if (ops->source.raw == NULL)
		return -1;

	target = ++s;
	comment = strchr(s, arch->objdump.comment_char);

	if (comment != NULL)
		s = comment - 1;
	else
		s = strchr(s, '\0') - 1;

	while (s > target && isspace(s[0]))
		--s;
	s++;
	prev = *s;
	*s = '\0';

	ops->target.raw = strdup(target);
	*s = prev;

	if (ops->target.raw == NULL)
		goto out_free_source;

	if (comment == NULL)
		return 0;

	while (comment[0] != '\0' && isspace(comment[0]))
		++comment;

	comment__symbol(ops->source.raw, comment, &ops->source.addr, &ops->source.name);
	comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);

	return 0;

out_free_source:
	zfree(&ops->source.raw);
	return -1;
}

static int mov__scnprintf(struct ins *ins, char *bf, size_t size,
			   struct ins_operands *ops)
{
	return scnprintf(bf, size, "%-6.6s %s,%s", ins->name,
			 ops->source.name ?: ops->source.raw,
			 ops->target.name ?: ops->target.raw);
}

static struct ins_ops mov_ops = {
	.parse	   = mov__parse,
	.scnprintf = mov__scnprintf,
};

static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops, struct map *map __maybe_unused)
{
	char *target, *comment, *s, prev;

	target = s = ops->raw;

	while (s[0] != '\0' && !isspace(s[0]))
		++s;
	prev = *s;
	*s = '\0';

	ops->target.raw = strdup(target);
	*s = prev;

	if (ops->target.raw == NULL)
		return -1;

	comment = strchr(s, arch->objdump.comment_char);
	if (comment == NULL)
		return 0;

	while (comment[0] != '\0' && isspace(comment[0]))
		++comment;

	comment__symbol(ops->target.raw, comment, &ops->target.addr, &ops->target.name);

	return 0;
}

static int dec__scnprintf(struct ins *ins, char *bf, size_t size,
			   struct ins_operands *ops)
{
	return scnprintf(bf, size, "%-6.6s %s", ins->name,
			 ops->target.name ?: ops->target.raw);
}

static struct ins_ops dec_ops = {
	.parse	   = dec__parse,
	.scnprintf = dec__scnprintf,
};

static int nop__scnprintf(struct ins *ins __maybe_unused, char *bf, size_t size,
			  struct ins_operands *ops __maybe_unused)
{
	return scnprintf(bf, size, "%-6.6s", "nop");
}

static struct ins_ops nop_ops = {
	.scnprintf = nop__scnprintf,
};

static struct ins_ops ret_ops = {
	.scnprintf = ins__raw_scnprintf,
};

bool ins__is_ret(const struct ins *ins)
{
	return ins->ops == &ret_ops;
}

static int ins__key_cmp(const void *name, const void *insp)
{
	const struct ins *ins = insp;

	return strcmp(name, ins->name);
}

static int ins__cmp(const void *a, const void *b)
{
	const struct ins *ia = a;
	const struct ins *ib = b;

	return strcmp(ia->name, ib->name);
}

static void ins__sort(struct arch *arch)
{
	const int nmemb = arch->nr_instructions;

	qsort(arch->instructions, nmemb, sizeof(struct ins), ins__cmp);
}

static struct ins_ops *__ins__find(struct arch *arch, const char *name)
{
	struct ins *ins;
	const int nmemb = arch->nr_instructions;

	if (!arch->sorted_instructions) {
		ins__sort(arch);
		arch->sorted_instructions = true;
	}

	ins = bsearch(name, arch->instructions, nmemb, sizeof(struct ins), ins__key_cmp);
	return ins ? ins->ops : NULL;
}

static struct ins_ops *ins__find(struct arch *arch, const char *name)
{
	struct ins_ops *ops = __ins__find(arch, name);

	if (!ops && arch->associate_instruction_ops)
		ops = arch->associate_instruction_ops(arch, name);

	return ops;
}

static int arch__key_cmp(const void *name, const void *archp)
{
	const struct arch *arch = archp;

	return strcmp(name, arch->name);
}

static int arch__cmp(const void *a, const void *b)
{
	const struct arch *aa = a;
	const struct arch *ab = b;

	return strcmp(aa->name, ab->name);
}

static void arch__sort(void)
{
	const int nmemb = ARRAY_SIZE(architectures);

	qsort(architectures, nmemb, sizeof(struct arch), arch__cmp);
}

static struct arch *arch__find(const char *name)
{
	const int nmemb = ARRAY_SIZE(architectures);
	static bool sorted;

	if (!sorted) {
		arch__sort();
		sorted = true;
	}

	return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp);
}

int symbol__alloc_hist(struct symbol *sym)
{
	struct annotation *notes = symbol__annotation(sym);
	const size_t size = symbol__size(sym);
	size_t sizeof_sym_hist;

	/* Check for overflow when calculating sizeof_sym_hist */
	if (size > (SIZE_MAX - sizeof(struct sym_hist)) / sizeof(u64))
		return -1;

	sizeof_sym_hist = (sizeof(struct sym_hist) + size * sizeof(u64));

	/* Check for overflow in zalloc argument */
	if (sizeof_sym_hist > (SIZE_MAX - sizeof(*notes->src))
				/ symbol_conf.nr_events)
		return -1;

	notes->src = zalloc(sizeof(*notes->src) + symbol_conf.nr_events * sizeof_sym_hist);
	if (notes->src == NULL)
		return -1;
	notes->src->sizeof_sym_hist = sizeof_sym_hist;
	notes->src->nr_histograms   = symbol_conf.nr_events;
	INIT_LIST_HEAD(&notes->src->source);
	return 0;
}

/* The cycles histogram is lazily allocated. */
static int symbol__alloc_hist_cycles(struct symbol *sym)
{
	struct annotation *notes = symbol__annotation(sym);
	const size_t size = symbol__size(sym);

	notes->src->cycles_hist = calloc(size, sizeof(struct cyc_hist));
	if (notes->src->cycles_hist == NULL)
		return -1;
	return 0;
}

void symbol__annotate_zero_histograms(struct symbol *sym)
{
	struct annotation *notes = symbol__annotation(sym);

	pthread_mutex_lock(&notes->lock);
	if (notes->src != NULL) {
		memset(notes->src->histograms, 0,
		       notes->src->nr_histograms * notes->src->sizeof_sym_hist);
		if (notes->src->cycles_hist)
			memset(notes->src->cycles_hist, 0,
				symbol__size(sym) * sizeof(struct cyc_hist));
	}
	pthread_mutex_unlock(&notes->lock);
}

static int __symbol__account_cycles(struct annotation *notes,
				    u64 start,
				    unsigned offset, unsigned cycles,
				    unsigned have_start)
{
	struct cyc_hist *ch;

	ch = notes->src->cycles_hist;
	/*
	 * For now we can only account one basic block per
	 * final jump. But multiple could be overlapping.
	 * Always account the longest one. So when
	 * a shorter one has been already seen throw it away.
	 *
	 * We separately always account the full cycles.
	 */
	ch[offset].num_aggr++;
	ch[offset].cycles_aggr += cycles;

	if (!have_start && ch[offset].have_start)
		return 0;
	if (ch[offset].num) {
		if (have_start && (!ch[offset].have_start ||
				   ch[offset].start > start)) {
			ch[offset].have_start = 0;
			ch[offset].cycles = 0;
			ch[offset].num = 0;
			if (ch[offset].reset < 0xffff)
				ch[offset].reset++;
		} else if (have_start &&
			   ch[offset].start < start)
			return 0;
	}
	ch[offset].have_start = have_start;
	ch[offset].start = start;
	ch[offset].cycles += cycles;
	ch[offset].num++;
	return 0;
}

static int __symbol__inc_addr_samples(struct symbol *sym, struct map *map,
				      struct annotation *notes, int evidx, u64 addr)
{
	unsigned offset;
	struct sym_hist *h;

	pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));

	if (addr < sym->start || addr >= sym->end) {
		pr_debug("%s(%d): ERANGE! sym->name=%s, start=%#" PRIx64 ", addr=%#" PRIx64 ", end=%#" PRIx64 "\n",
		       __func__, __LINE__, sym->name, sym->start, addr, sym->end);
		return -ERANGE;
	}

	offset = addr - sym->start;
	h = annotation__histogram(notes, evidx);
	h->sum++;
	h->addr[offset]++;

	pr_debug3("%#" PRIx64 " %s: period++ [addr: %#" PRIx64 ", %#" PRIx64
		  ", evidx=%d] => %" PRIu64 "\n", sym->start, sym->name,
		  addr, addr - sym->start, evidx, h->addr[offset]);
	return 0;
}

static struct annotation *symbol__get_annotation(struct symbol *sym, bool cycles)
{
	struct annotation *notes = symbol__annotation(sym);

	if (notes->src == NULL) {
		if (symbol__alloc_hist(sym) < 0)
			return NULL;
	}
	if (!notes->src->cycles_hist && cycles) {
		if (symbol__alloc_hist_cycles(sym) < 0)
			return NULL;
	}
	return notes;
}

static int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
				    int evidx, u64 addr)
{
	struct annotation *notes;

	if (sym == NULL)
		return 0;
	notes = symbol__get_annotation(sym, false);
	if (notes == NULL)
		return -ENOMEM;
	return __symbol__inc_addr_samples(sym, map, notes, evidx, addr);
}

static int symbol__account_cycles(u64 addr, u64 start,
				  struct symbol *sym, unsigned cycles)
{
	struct annotation *notes;
	unsigned offset;

	if (sym == NULL)
		return 0;
	notes = symbol__get_annotation(sym, true);
	if (notes == NULL)
		return -ENOMEM;
	if (addr < sym->start || addr >= sym->end)
		return -ERANGE;

	if (start) {
		if (start < sym->start || start >= sym->end)
			return -ERANGE;
		if (start >= addr)
			start = 0;
	}
	offset = addr - sym->start;
	return __symbol__account_cycles(notes,
					start ? start - sym->start : 0,
					offset, cycles,
					!!start);
}

int addr_map_symbol__account_cycles(struct addr_map_symbol *ams,
				    struct addr_map_symbol *start,
				    unsigned cycles)
{
	u64 saddr = 0;
	int err;

	if (!cycles)
		return 0;

	/*
	 * Only set start when IPC can be computed. We can only
	 * compute it when the basic block is completely in a single
	 * function.
	 * Special case the case when the jump is elsewhere, but
	 * it starts on the function start.
	 */
	if (start &&
		(start->sym == ams->sym ||
		 (ams->sym &&
		   start->addr == ams->sym->start + ams->map->start)))
		saddr = start->al_addr;
	if (saddr == 0)
		pr_debug2("BB with bad start: addr %"PRIx64" start %"PRIx64" sym %"PRIx64" saddr %"PRIx64"\n",
			ams->addr,
			start ? start->addr : 0,
			ams->sym ? ams->sym->start + ams->map->start : 0,
			saddr);
	err = symbol__account_cycles(ams->al_addr, saddr, ams->sym, cycles);
	if (err)
		pr_debug2("account_cycles failed %d\n", err);
	return err;
}

int addr_map_symbol__inc_samples(struct addr_map_symbol *ams, int evidx)
{
	return symbol__inc_addr_samples(ams->sym, ams->map, evidx, ams->al_addr);
}

int hist_entry__inc_addr_samples(struct hist_entry *he, int evidx, u64 ip)
{
	return symbol__inc_addr_samples(he->ms.sym, he->ms.map, evidx, ip);
}

static void disasm_line__init_ins(struct disasm_line *dl, struct arch *arch, struct map *map)
{
	dl->ins.ops = ins__find(arch, dl->ins.name);

	if (!dl->ins.ops)
		return;

	if (dl->ins.ops->parse && dl->ins.ops->parse(arch, &dl->ops, map) < 0)
		dl->ins.ops = NULL;
}

static int disasm_line__parse(char *line, const char **namep, char **rawp)
{
	char *name = line, tmp;

	while (isspace(name[0]))
		++name;

	if (name[0] == '\0')
		return -1;

	*rawp = name + 1;

	while ((*rawp)[0] != '\0' && !isspace((*rawp)[0]))
		++*rawp;

	tmp = (*rawp)[0];
	(*rawp)[0] = '\0';
	*namep = strdup(name);

	if (*namep == NULL)
		goto out_free_name;

	(*rawp)[0] = tmp;

	if ((*rawp)[0] != '\0') {
		(*rawp)++;
		while (isspace((*rawp)[0]))
			++(*rawp);
	}

	return 0;

out_free_name:
	free((void *)namep);
	*namep = NULL;
	return -1;
}

static struct disasm_line *disasm_line__new(s64 offset, char *line,
					    size_t privsize, int line_nr,
					    struct arch *arch,
					    struct map *map)
{
	struct disasm_line *dl = zalloc(sizeof(*dl) + privsize);

	if (dl != NULL) {
		dl->offset = offset;
		dl->line = strdup(line);
		dl->line_nr = line_nr;
		if (dl->line == NULL)
			goto out_delete;

		if (offset != -1) {
			if (disasm_line__parse(dl->line, &dl->ins.name, &dl->ops.raw) < 0)
				goto out_free_line;

			disasm_line__init_ins(dl, arch, map);
		}
	}

	return dl;

out_free_line:
	zfree(&dl->line);
out_delete:
	free(dl);
	return NULL;
}

void disasm_line__free(struct disasm_line *dl)
{
	zfree(&dl->line);
	if (dl->ins.ops && dl->ins.ops->free)
		dl->ins.ops->free(&dl->ops);
	else
		ins__delete(&dl->ops);
	free((void *)dl->ins.name);
	dl->ins.name = NULL;
	free(dl);
}

int disasm_line__scnprintf(struct disasm_line *dl, char *bf, size_t size, bool raw)
{
	if (raw || !dl->ins.ops)
		return scnprintf(bf, size, "%-6.6s %s", dl->ins.name, dl->ops.raw);

	return ins__scnprintf(&dl->ins, bf, size, &dl->ops);
}

static void disasm__add(struct list_head *head, struct disasm_line *line)
{
	list_add_tail(&line->node, head);
}

struct disasm_line *disasm__get_next_ip_line(struct list_head *head, struct disasm_line *pos)
{
	list_for_each_entry_continue(pos, head, node)
		if (pos->offset >= 0)
			return pos;

	return NULL;
}

double disasm__calc_percent(struct annotation *notes, int evidx, s64 offset,
			    s64 end, const char **path, u64 *nr_samples)
{
	struct source_line *src_line = notes->src->lines;
	double percent = 0.0;
	*nr_samples = 0;

	if (src_line) {
		size_t sizeof_src_line = sizeof(*src_line) +
				sizeof(src_line->samples) * (src_line->nr_pcnt - 1);

		while (offset < end) {
			src_line = (void *)notes->src->lines +
					(sizeof_src_line * offset);

			if (*path == NULL)
				*path = src_line->path;

			percent += src_line->samples[evidx].percent;
			*nr_samples += src_line->samples[evidx].nr;
			offset++;
		}
	} else {
		struct sym_hist *h = annotation__histogram(notes, evidx);
		unsigned int hits = 0;

		while (offset < end)
			hits += h->addr[offset++];

		if (h->sum) {
			*nr_samples = hits;
			percent = 100.0 * hits / h->sum;
		}
	}

	return percent;
}

static const char *annotate__address_color(struct block_range *br)
{
	double cov = block_range__coverage(br);

	if (cov >= 0) {
		/* mark red for >75% coverage */
		if (cov > 0.75)
			return PERF_COLOR_RED;

		/* mark dull for <1% coverage */
		if (cov < 0.01)
			return PERF_COLOR_NORMAL;
	}

	return PERF_COLOR_MAGENTA;
}

static const char *annotate__asm_color(struct block_range *br)
{
	double cov = block_range__coverage(br);

	if (cov >= 0) {
		/* mark dull for <1% coverage */
		if (cov < 0.01)
			return PERF_COLOR_NORMAL;
	}

	return PERF_COLOR_BLUE;
}

static void annotate__branch_printf(struct block_range *br, u64 addr)
{
	bool emit_comment = true;

	if (!br)
		return;

#if 1
	if (br->is_target && br->start == addr) {
		struct block_range *branch = br;
		double p;

		/*
		 * Find matching branch to our target.
		 */
		while (!branch->is_branch)
			branch = block_range__next(branch);

		p = 100 *(double)br->entry / branch->coverage;

		if (p > 0.1) {
			if (emit_comment) {
				emit_comment = false;
				printf("\t#");
			}

			/*
			 * The percentage of coverage joined at this target in relation
			 * to the next branch.
			 */
			printf(" +%.2f%%", p);
		}
	}
#endif
	if (br->is_branch && br->end == addr) {
		double p = 100*(double)br->taken / br->coverage;

		if (p > 0.1) {
			if (emit_comment) {
				emit_comment = false;
				printf("\t#");
			}

			/*
			 * The percentage of coverage leaving at this branch, and
			 * its prediction ratio.
			 */
			printf(" -%.2f%% (p:%.2f%%)", p, 100*(double)br->pred  / br->taken);
		}
	}
}


static int disasm_line__print(struct disasm_line *dl, struct symbol *sym, u64 start,
		      struct perf_evsel *evsel, u64 len, int min_pcnt, int printed,
		      int max_lines, struct disasm_line *queue)
{
	static const char *prev_line;
	static const char *prev_color;

	if (dl->offset != -1) {
		const char *path = NULL;
		u64 nr_samples;
		double percent, max_percent = 0.0;
		double *ppercents = &percent;
		u64 *psamples = &nr_samples;
		int i, nr_percent = 1;
		const char *color;
		struct annotation *notes = symbol__annotation(sym);
		s64 offset = dl->offset;
		const u64 addr = start + offset;
		struct disasm_line *next;
		struct block_range *br;

		next = disasm__get_next_ip_line(&notes->src->source, dl);

		if (perf_evsel__is_group_event(evsel)) {
			nr_percent = evsel->nr_members;
			ppercents = calloc(nr_percent, sizeof(double));
			psamples = calloc(nr_percent, sizeof(u64));
			if (ppercents == NULL || psamples == NULL) {
				return -1;
			}
		}

		for (i = 0; i < nr_percent; i++) {
			percent = disasm__calc_percent(notes,
					notes->src->lines ? i : evsel->idx + i,
					offset,
					next ? next->offset : (s64) len,
					&path, &nr_samples);

			ppercents[i] = percent;
			psamples[i] = nr_samples;
			if (percent > max_percent)
				max_percent = percent;
		}

		if (max_percent < min_pcnt)
			return -1;

		if (max_lines && printed >= max_lines)
			return 1;

		if (queue != NULL) {
			list_for_each_entry_from(queue, &notes->src->source, node) {
				if (queue == dl)
					break;
				disasm_line__print(queue, sym, start, evsel, len,
						    0, 0, 1, NULL);
			}
		}

		color = get_percent_color(max_percent);

		/*
		 * Also color the filename and line if needed, with
		 * the same color than the percentage. Don't print it
		 * twice for close colored addr with the same filename:line
		 */
		if (path) {
			if (!prev_line || strcmp(prev_line, path)
				       || color != prev_color) {
				color_fprintf(stdout, color, " %s", path);
				prev_line = path;
				prev_color = color;
			}
		}

		for (i = 0; i < nr_percent; i++) {
			percent = ppercents[i];
			nr_samples = psamples[i];
			color = get_percent_color(percent);

			if (symbol_conf.show_total_period)
				color_fprintf(stdout, color, " %7" PRIu64,
					      nr_samples);
			else
				color_fprintf(stdout, color, " %7.2f", percent);
		}

		printf(" :	");

		br = block_range__find(addr);
		color_fprintf(stdout, annotate__address_color(br), "  %" PRIx64 ":", addr);
		color_fprintf(stdout, annotate__asm_color(br), "%s", dl->line);
		annotate__branch_printf(br, addr);
		printf("\n");

		if (ppercents != &percent)
			free(ppercents);

		if (psamples != &nr_samples)
			free(psamples);

	} else if (max_lines && printed >= max_lines)
		return 1;
	else {
		int width = 8;

		if (queue)
			return -1;

		if (perf_evsel__is_group_event(evsel))
			width *= evsel->nr_members;

		if (!*dl->line)
			printf(" %*s:\n", width, " ");
		else
			printf(" %*s:	%s\n", width, " ", dl->line);
	}

	return 0;
}

/*
 * symbol__parse_objdump_line() parses objdump output (with -d --no-show-raw)
 * which looks like following
 *
 *  0000000000415500 <_init>:
 *    415500:       sub    $0x8,%rsp
 *    415504:       mov    0x2f5ad5(%rip),%rax        # 70afe0 <_DYNAMIC+0x2f8>
 *    41550b:       test   %rax,%rax
 *    41550e:       je     415515 <_init+0x15>
 *    415510:       callq  416e70 <__gmon_start__@plt>
 *    415515:       add    $0x8,%rsp
 *    415519:       retq
 *
 * it will be parsed and saved into struct disasm_line as
 *  <offset>       <name>  <ops.raw>
 *
 * The offset will be a relative offset from the start of the symbol and -1
 * means that it's not a disassembly line so should be treated differently.
 * The ops.raw part will be parsed further according to type of the instruction.
 */
static int symbol__parse_objdump_line(struct symbol *sym, struct map *map,
				      struct arch *arch,
				      FILE *file, size_t privsize,
				      int *line_nr)
{
	struct annotation *notes = symbol__annotation(sym);
	struct disasm_line *dl;
	char *line = NULL, *parsed_line, *tmp, *tmp2, *c;
	size_t line_len;
	s64 line_ip, offset = -1;
	regmatch_t match[2];

	if (getline(&line, &line_len, file) < 0)
		return -1;

	if (!line)
		return -1;

	while (line_len != 0 && isspace(line[line_len - 1]))
		line[--line_len] = '\0';

	c = strchr(line, '\n');
	if (c)
		*c = 0;

	line_ip = -1;
	parsed_line = line;

	/* /filename:linenr ? Save line number and ignore. */
	if (regexec(&file_lineno, line, 2, match, 0) == 0) {
		*line_nr = atoi(line + match[1].rm_so);
		return 0;
	}

	/*
	 * Strip leading spaces:
	 */
	tmp = line;
	while (*tmp) {
		if (*tmp != ' ')
			break;
		tmp++;
	}

	if (*tmp) {
		/*
		 * Parse hexa addresses followed by ':'
		 */
		line_ip = strtoull(tmp, &tmp2, 16);
		if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0')
			line_ip = -1;
	}

	if (line_ip != -1) {
		u64 start = map__rip_2objdump(map, sym->start),
		    end = map__rip_2objdump(map, sym->end);

		offset = line_ip - start;
		if ((u64)line_ip < start || (u64)line_ip >= end)
			offset = -1;
		else
			parsed_line = tmp2 + 1;
	}

	dl = disasm_line__new(offset, parsed_line, privsize, *line_nr, arch, map);
	free(line);
	(*line_nr)++;

	if (dl == NULL)
		return -1;

	if (dl->ops.target.offset == UINT64_MAX)
		dl->ops.target.offset = dl->ops.target.addr -
					map__rip_2objdump(map, sym->start);

	/* kcore has no symbols, so add the call target name */
	if (dl->ins.ops && ins__is_call(&dl->ins) && !dl->ops.target.name) {
		struct addr_map_symbol target = {
			.map = map,
			.addr = dl->ops.target.addr,
		};

		if (!map_groups__find_ams(&target) &&
		    target.sym->start == target.al_addr)
			dl->ops.target.name = strdup(target.sym->name);
	}

	disasm__add(&notes->src->source, dl);

	return 0;
}

static __attribute__((constructor)) void symbol__init_regexpr(void)
{
	regcomp(&file_lineno, "^/[^:]+:([0-9]+)", REG_EXTENDED);
}

static void delete_last_nop(struct symbol *sym)
{
	struct annotation *notes = symbol__annotation(sym);
	struct list_head *list = &notes->src->source;
	struct disasm_line *dl;

	while (!list_empty(list)) {
		dl = list_entry(list->prev, struct disasm_line, node);

		if (dl->ins.ops) {
			if (dl->ins.ops != &nop_ops)
				return;
		} else {
			if (!strstr(dl->line, " nop ") &&
			    !strstr(dl->line, " nopl ") &&
			    !strstr(dl->line, " nopw "))
				return;
		}

		list_del(&dl->node);
		disasm_line__free(dl);
	}
}

int symbol__strerror_disassemble(struct symbol *sym __maybe_unused, struct map *map,
			      int errnum, char *buf, size_t buflen)
{
	struct dso *dso = map->dso;

	BUG_ON(buflen == 0);

	if (errnum >= 0) {
		str_error_r(errnum, buf, buflen);
		return 0;
	}

	switch (errnum) {
	case SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX: {
		char bf[SBUILD_ID_SIZE + 15] = " with build id ";
		char *build_id_msg = NULL;

		if (dso->has_build_id) {
			build_id__sprintf(dso->build_id,
					  sizeof(dso->build_id), bf + 15);
			build_id_msg = bf;
		}
		scnprintf(buf, buflen,
			  "No vmlinux file%s\nwas found in the path.\n\n"
			  "Note that annotation using /proc/kcore requires CAP_SYS_RAWIO capability.\n\n"
			  "Please use:\n\n"
			  "  perf buildid-cache -vu vmlinux\n\n"
			  "or:\n\n"
			  "  --vmlinux vmlinux\n", build_id_msg ?: "");
	}
		break;
	default:
		scnprintf(buf, buflen, "Internal error: Invalid %d error code\n", errnum);
		break;
	}

	return 0;
}

static int dso__disassemble_filename(struct dso *dso, char *filename, size_t filename_size)
{
	char linkname[PATH_MAX];
	char *build_id_filename;

	if (dso->symtab_type == DSO_BINARY_TYPE__KALLSYMS &&
	    !dso__is_kcore(dso))
		return SYMBOL_ANNOTATE_ERRNO__NO_VMLINUX;

	build_id_filename = dso__build_id_filename(dso, NULL, 0);
	if (build_id_filename) {
		__symbol__join_symfs(filename, filename_size, build_id_filename);
		free(build_id_filename);
	} else {
		if (dso->has_build_id)
			return ENOMEM;
		goto fallback;
	}

	if (dso__is_kcore(dso) ||
	    readlink(filename, linkname, sizeof(linkname)) < 0 ||
	    strstr(linkname, DSO__NAME_KALLSYMS) ||
	    access(filename, R_OK)) {
fallback:
		/*
		 * If we don't have build-ids or the build-id file isn't in the
		 * cache, or is just a kallsyms file, well, lets hope that this
		 * DSO is the same as when 'perf record' ran.
		 */
		__symbol__join_symfs(filename, filename_size, dso->long_name);
	}

	return 0;
}

static const char *annotate__norm_arch(const char *arch_name)
{
	struct utsname uts;

	if (!arch_name) { /* Assume we are annotating locally. */
		if (uname(&uts) < 0)
			return NULL;
		arch_name = uts.machine;
	}
	return normalize_arch((char *)arch_name);
}

int symbol__disassemble(struct symbol *sym, struct map *map, const char *arch_name, size_t privsize)
{
	struct dso *dso = map->dso;
	char command[PATH_MAX * 2];
	struct arch *arch = NULL;
	FILE *file;
	char symfs_filename[PATH_MAX];
	struct kcore_extract kce;
	bool delete_extract = false;
	int stdout_fd[2];
	int lineno = 0;
	int nline;
	pid_t pid;
	int err = dso__disassemble_filename(dso, symfs_filename, sizeof(symfs_filename));

	if (err)
		return err;

	arch_name = annotate__norm_arch(arch_name);
	if (!arch_name)
		return -1;

	arch = arch__find(arch_name);
	if (arch == NULL)
		return -ENOTSUP;

	if (arch->init) {
		err = arch->init(arch);
		if (err) {
			pr_err("%s: failed to initialize %s arch priv area\n", __func__, arch->name);
			return err;
		}
	}

	pr_debug("%s: filename=%s, sym=%s, start=%#" PRIx64 ", end=%#" PRIx64 "\n", __func__,
		 symfs_filename, sym->name, map->unmap_ip(map, sym->start),
		 map->unmap_ip(map, sym->end));

	pr_debug("annotating [%p] %30s : [%p] %30s\n",
		 dso, dso->long_name, sym, sym->name);

	if (dso__is_kcore(dso)) {
		kce.kcore_filename = symfs_filename;
		kce.addr = map__rip_2objdump(map, sym->start);
		kce.offs = sym->start;
		kce.len = sym->end - sym->start;
		if (!kcore_extract__create(&kce)) {
			delete_extract = true;
			strlcpy(symfs_filename, kce.extract_filename,
				sizeof(symfs_filename));
		}
	} else if (dso__needs_decompress(dso)) {
		char tmp[PATH_MAX];
		struct kmod_path m;
		int fd;
		bool ret;

		if (kmod_path__parse_ext(&m, symfs_filename))
			goto out;

		snprintf(tmp, PATH_MAX, "/tmp/perf-kmod-XXXXXX");

		fd = mkstemp(tmp);
		if (fd < 0) {
			free(m.ext);
			goto out;
		}

		ret = decompress_to_file(m.ext, symfs_filename, fd);

		if (ret)
			pr_err("Cannot decompress %s %s\n", m.ext, symfs_filename);

		free(m.ext);
		close(fd);

		if (!ret)
			goto out;

		strcpy(symfs_filename, tmp);
	}

	snprintf(command, sizeof(command),
		 "%s %s%s --start-address=0x%016" PRIx64
		 " --stop-address=0x%016" PRIx64
		 " -l -d %s %s -C %s 2>/dev/null|grep -v %s|expand",
		 objdump_path ? objdump_path : "objdump",
		 disassembler_style ? "-M " : "",
		 disassembler_style ? disassembler_style : "",
		 map__rip_2objdump(map, sym->start),
		 map__rip_2objdump(map, sym->end),
		 symbol_conf.annotate_asm_raw ? "" : "--no-show-raw",
		 symbol_conf.annotate_src ? "-S" : "",
		 symfs_filename, symfs_filename);

	pr_debug("Executing: %s\n", command);

	err = -1;
	if (pipe(stdout_fd) < 0) {
		pr_err("Failure creating the pipe to run %s\n", command);
		goto out_remove_tmp;
	}

	pid = fork();
	if (pid < 0) {
		pr_err("Failure forking to run %s\n", command);
		goto out_close_stdout;
	}

	if (pid == 0) {
		close(stdout_fd[0]);
		dup2(stdout_fd[1], 1);
		close(stdout_fd[1]);
		execl("/bin/sh", "sh", "-c", command, NULL);
		perror(command);
		exit(-1);
	}

	close(stdout_fd[1]);

	file = fdopen(stdout_fd[0], "r");
	if (!file) {
		pr_err("Failure creating FILE stream for %s\n", command);
		/*
		 * If we were using debug info should retry with
		 * original binary.
		 */
		goto out_remove_tmp;
	}

	nline = 0;
	while (!feof(file)) {
		if (symbol__parse_objdump_line(sym, map, arch, file, privsize,
			    &lineno) < 0)
			break;
		nline++;
	}

	if (nline == 0)
		pr_err("No output from %s\n", command);

	/*
	 * kallsyms does not have symbol sizes so there may a nop at the end.
	 * Remove it.
	 */
	if (dso__is_kcore(dso))
		delete_last_nop(sym);

	fclose(file);
	err = 0;
out_remove_tmp:
	close(stdout_fd[0]);

	if (dso__needs_decompress(dso))
		unlink(symfs_filename);

	if (delete_extract)
		kcore_extract__delete(&kce);
out:
	return err;

out_close_stdout:
	close(stdout_fd[1]);
	goto out_remove_tmp;
}

static void insert_source_line(struct rb_root *root, struct source_line *src_line)
{
	struct source_line *iter;
	struct rb_node **p = &root->rb_node;
	struct rb_node *parent = NULL;
	int i, ret;

	while (*p != NULL) {
		parent = *p;
		iter = rb_entry(parent, struct source_line, node);

		ret = strcmp(iter->path, src_line->path);
		if (ret == 0) {
			for (i = 0; i < src_line->nr_pcnt; i++)
				iter->samples[i].percent_sum += src_line->samples[i].percent;
			return;
		}

		if (ret < 0)
			p = &(*p)->rb_left;
		else
			p = &(*p)->rb_right;
	}

	for (i = 0; i < src_line->nr_pcnt; i++)
		src_line->samples[i].percent_sum = src_line->samples[i].percent;

	rb_link_node(&src_line->node, parent, p);
	rb_insert_color(&src_line->node, root);
}

static int cmp_source_line(struct source_line *a, struct source_line *b)
{
	int i;

	for (i = 0; i < a->nr_pcnt; i++) {
		if (a->samples[i].percent_sum == b->samples[i].percent_sum)
			continue;
		return a->samples[i].percent_sum > b->samples[i].percent_sum;
	}

	return 0;
}

static void __resort_source_line(struct rb_root *root, struct source_line *src_line)
{
	struct source_line *iter;
	struct rb_node **p = &root->rb_node;
	struct rb_node *parent = NULL;

	while (*p != NULL) {
		parent = *p;
		iter = rb_entry(parent, struct source_line, node);

		if (cmp_source_line(src_line, iter))
			p = &(*p)->rb_left;
		else
			p = &(*p)->rb_right;
	}

	rb_link_node(&src_line->node, parent, p);
	rb_insert_color(&src_line->node, root);
}

static void resort_source_line(struct rb_root *dest_root, struct rb_root *src_root)
{
	struct source_line *src_line;
	struct rb_node *node;

	node = rb_first(src_root);
	while (node) {
		struct rb_node *next;

		src_line = rb_entry(node, struct source_line, node);
		next = rb_next(node);
		rb_erase(node, src_root);

		__resort_source_line(dest_root, src_line);
		node = next;
	}
}

static void symbol__free_source_line(struct symbol *sym, int len)
{
	struct annotation *notes = symbol__annotation(sym);
	struct source_line *src_line = notes->src->lines;
	size_t sizeof_src_line;
	int i;

	sizeof_src_line = sizeof(*src_line) +
			  (sizeof(src_line->samples) * (src_line->nr_pcnt - 1));

	for (i = 0; i < len; i++) {
		free_srcline(src_line->path);
		src_line = (void *)src_line + sizeof_src_line;
	}

	zfree(&notes->src->lines);
}

/* Get the filename:line for the colored entries */
static int symbol__get_source_line(struct symbol *sym, struct map *map,
				   struct perf_evsel *evsel,
				   struct rb_root *root, int len)
{
	u64 start;
	int i, k;
	int evidx = evsel->idx;
	struct source_line *src_line;
	struct annotation *notes = symbol__annotation(sym);
	struct sym_hist *h = annotation__histogram(notes, evidx);
	struct rb_root tmp_root = RB_ROOT;
	int nr_pcnt = 1;
	u64 h_sum = h->sum;
	size_t sizeof_src_line = sizeof(struct source_line);

	if (perf_evsel__is_group_event(evsel)) {
		for (i = 1; i < evsel->nr_members; i++) {
			h = annotation__histogram(notes, evidx + i);
			h_sum += h->sum;
		}
		nr_pcnt = evsel->nr_members;
		sizeof_src_line += (nr_pcnt - 1) * sizeof(src_line->samples);
	}

	if (!h_sum)
		return 0;

	src_line = notes->src->lines = calloc(len, sizeof_src_line);
	if (!notes->src->lines)
		return -1;

	start = map__rip_2objdump(map, sym->start);

	for (i = 0; i < len; i++) {
		u64 offset;
		double percent_max = 0.0;

		src_line->nr_pcnt = nr_pcnt;

		for (k = 0; k < nr_pcnt; k++) {
			h = annotation__histogram(notes, evidx + k);
			src_line->samples[k].percent = 100.0 * h->addr[i] / h->sum;

			if (src_line->samples[k].percent > percent_max)
				percent_max = src_line->samples[k].percent;
		}

		if (percent_max <= 0.5)
			goto next;

		offset = start + i;
		src_line->path = get_srcline(map->dso, offset, NULL, false);
		insert_source_line(&tmp_root, src_line);

	next:
		src_line = (void *)src_line + sizeof_src_line;
	}

	resort_source_line(root, &tmp_root);
	return 0;
}

static void print_summary(struct rb_root *root, const char *filename)
{
	struct source_line *src_line;
	struct rb_node *node;

	printf("\nSorted summary for file %s\n", filename);
	printf("----------------------------------------------\n\n");

	if (RB_EMPTY_ROOT(root)) {
		printf(" Nothing higher than %1.1f%%\n", MIN_GREEN);
		return;
	}

	node = rb_first(root);
	while (node) {
		double percent, percent_max = 0.0;
		const char *color;
		char *path;
		int i;

		src_line = rb_entry(node, struct source_line, node);
		for (i = 0; i < src_line->nr_pcnt; i++) {
			percent = src_line->samples[i].percent_sum;
			color = get_percent_color(percent);
			color_fprintf(stdout, color, " %7.2f", percent);

			if (percent > percent_max)
				percent_max = percent;
		}

		path = src_line->path;
		color = get_percent_color(percent_max);
		color_fprintf(stdout, color, " %s\n", path);

		node = rb_next(node);
	}
}

static void symbol__annotate_hits(struct symbol *sym, struct perf_evsel *evsel)
{
	struct annotation *notes = symbol__annotation(sym);
	struct sym_hist *h = annotation__histogram(notes, evsel->idx);
	u64 len = symbol__size(sym), offset;

	for (offset = 0; offset < len; ++offset)
		if (h->addr[offset] != 0)
			printf("%*" PRIx64 ": %" PRIu64 "\n", BITS_PER_LONG / 2,
			       sym->start + offset, h->addr[offset]);
	printf("%*s: %" PRIu64 "\n", BITS_PER_LONG / 2, "h->sum", h->sum);
}

int symbol__annotate_printf(struct symbol *sym, struct map *map,
			    struct perf_evsel *evsel, bool full_paths,
			    int min_pcnt, int max_lines, int context)
{
	struct dso *dso = map->dso;
	char *filename;
	const char *d_filename;
	const char *evsel_name = perf_evsel__name(evsel);
	struct annotation *notes = symbol__annotation(sym);
	struct sym_hist *h = annotation__histogram(notes, evsel->idx);
	struct disasm_line *pos, *queue = NULL;
	u64 start = map__rip_2objdump(map, sym->start);
	int printed = 2, queue_len = 0;
	int more = 0;
	u64 len;
	int width = 8;
	int graph_dotted_len;

	filename = strdup(dso->long_name);
	if (!filename)
		return -ENOMEM;

	if (full_paths)
		d_filename = filename;
	else
		d_filename = basename(filename);

	len = symbol__size(sym);

	if (perf_evsel__is_group_event(evsel))
		width *= evsel->nr_members;

	graph_dotted_len = printf(" %-*.*s|	Source code & Disassembly of %s for %s (%" PRIu64 " samples)\n",
	       width, width, "Percent", d_filename, evsel_name, h->sum);

	printf("%-*.*s----\n",
	       graph_dotted_len, graph_dotted_len, graph_dotted_line);

	if (verbose)
		symbol__annotate_hits(sym, evsel);

	list_for_each_entry(pos, &notes->src->source, node) {
		if (context && queue == NULL) {
			queue = pos;
			queue_len = 0;
		}

		switch (disasm_line__print(pos, sym, start, evsel, len,
					    min_pcnt, printed, max_lines,
					    queue)) {
		case 0:
			++printed;
			if (context) {
				printed += queue_len;
				queue = NULL;
				queue_len = 0;
			}
			break;
		case 1:
			/* filtered by max_lines */
			++more;
			break;
		case -1:
		default:
			/*
			 * Filtered by min_pcnt or non IP lines when
			 * context != 0
			 */
			if (!context)
				break;
			if (queue_len == context)
				queue = list_entry(queue->node.next, typeof(*queue), node);
			else
				++queue_len;
			break;
		}
	}

	free(filename);

	return more;
}

void symbol__annotate_zero_histogram(struct symbol *sym, int evidx)
{
	struct annotation *notes = symbol__annotation(sym);
	struct sym_hist *h = annotation__histogram(notes, evidx);

	memset(h, 0, notes->src->sizeof_sym_hist);
}

void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
{
	struct annotation *notes = symbol__annotation(sym);
	struct sym_hist *h = annotation__histogram(notes, evidx);
	int len = symbol__size(sym), offset;

	h->sum = 0;
	for (offset = 0; offset < len; ++offset) {
		h->addr[offset] = h->addr[offset] * 7 / 8;
		h->sum += h->addr[offset];
	}
}

void disasm__purge(struct list_head *head)
{
	struct disasm_line *pos, *n;

	list_for_each_entry_safe(pos, n, head, node) {
		list_del(&pos->node);
		disasm_line__free(pos);
	}
}

static size_t disasm_line__fprintf(struct disasm_line *dl, FILE *fp)
{
	size_t printed;

	if (dl->offset == -1)
		return fprintf(fp, "%s\n", dl->line);

	printed = fprintf(fp, "%#" PRIx64 " %s", dl->offset, dl->ins.name);

	if (dl->ops.raw[0] != '\0') {
		printed += fprintf(fp, "%.*s %s\n", 6 - (int)printed, " ",
				   dl->ops.raw);
	}

	return printed + fprintf(fp, "\n");
}

size_t disasm__fprintf(struct list_head *head, FILE *fp)
{
	struct disasm_line *pos;
	size_t printed = 0;

	list_for_each_entry(pos, head, node)
		printed += disasm_line__fprintf(pos, fp);

	return printed;
}

int symbol__tty_annotate(struct symbol *sym, struct map *map,
			 struct perf_evsel *evsel, bool print_lines,
			 bool full_paths, int min_pcnt, int max_lines)
{
	struct dso *dso = map->dso;
	struct rb_root source_line = RB_ROOT;
	u64 len;

	if (symbol__disassemble(sym, map, perf_evsel__env_arch(evsel), 0) < 0)
		return -1;

	len = symbol__size(sym);

	if (print_lines) {
		srcline_full_filename = full_paths;
		symbol__get_source_line(sym, map, evsel, &source_line, len);
		print_summary(&source_line, dso->long_name);
	}

	symbol__annotate_printf(sym, map, evsel, full_paths,
				min_pcnt, max_lines, 0);
	if (print_lines)
		symbol__free_source_line(sym, len);

	disasm__purge(&symbol__annotation(sym)->src->source);

	return 0;
}

bool ui__has_annotation(void)
{
	return use_browser == 1 && perf_hpp_list.sym;
}