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
|
/* Low level interface for debugging Solaris threads for GDB, the GNU debugger.
Copyright 1996, 1997, 1998 Free Software Foundation, Inc.
This file is part of GDB.
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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* This module implements a sort of half target that sits between the
machine-independent parts of GDB and the /proc interface (procfs.c) to
provide access to the Solaris user-mode thread implementation.
Solaris threads are true user-mode threads, which are invoked via the thr_*
and pthread_* (native and Posix respectivly) interfaces. These are mostly
implemented in user-space, with all thread context kept in various
structures that live in the user's heap. These should not be confused with
lightweight processes (LWPs), which are implemented by the kernel, and
scheduled without explicit intervention by the process.
Just to confuse things a little, Solaris threads (both native and Posix) are
actually implemented using LWPs. In general, there are going to be more
threads than LWPs. There is no fixed correspondence between a thread and an
LWP. When a thread wants to run, it gets scheduled onto the first available
LWP and can therefore migrate from one LWP to another as time goes on. A
sleeping thread may not be associated with an LWP at all!
To make it possible to mess with threads, Sun provides a library called
libthread_db.so.1 (not to be confused with libthread_db.so.0, which doesn't
have a published interface). This interface has an upper part, which it
provides, and a lower part which I provide. The upper part consists of the
td_* routines, which allow me to find all the threads, query their state,
etc... The lower part consists of all of the ps_*, which are used by the
td_* routines to read/write memory, manipulate LWPs, lookup symbols, etc...
The ps_* routines actually do most of their work by calling functions in
procfs.c. */
#include "defs.h"
#include <thread.h>
#include <proc_service.h>
#include <thread_db.h>
#include "gdbthread.h"
#include "target.h"
#include "inferior.h"
#include <fcntl.h>
#include <unistd.h>
#include <sys/stat.h>
#include <dlfcn.h>
#include "gdbcmd.h"
extern struct target_ops sol_thread_ops; /* Forward declaration */
extern struct target_ops sol_core_ops; /* Forward declaration */
/* place to store core_ops before we overwrite it */
static struct target_ops orig_core_ops;
struct target_ops sol_thread_ops;
struct target_ops sol_core_ops;
extern int procfs_suppress_run;
extern struct target_ops procfs_ops; /* target vector for procfs.c */
extern struct target_ops core_ops; /* target vector for corelow.c */
extern char *procfs_pid_to_str PARAMS ((int pid));
/* Note that these prototypes differ slightly from those used in procfs.c
for of two reasons. One, we can't use gregset_t, as that's got a whole
different meaning under Solaris (also, see above). Two, we can't use the
pointer form here as these are actually arrays of ints (for Sparc's at
least), and are automatically coerced into pointers to ints when used as
parameters. That makes it impossible to avoid a compiler warning when
passing pr{g fp}regset_t's from a parameter to an argument of one of
these functions. */
extern void supply_gregset PARAMS ((const prgregset_t));
extern void fill_gregset PARAMS ((prgregset_t, int));
extern void supply_fpregset PARAMS ((const prfpregset_t *));
extern void fill_fpregset PARAMS ((prfpregset_t *, int));
/* This struct is defined by us, but mainly used for the proc_service interface.
We don't have much use for it, except as a handy place to get a real pid
for memory accesses. */
struct ps_prochandle
{
pid_t pid;
};
struct string_map
{
int num;
char *str;
};
static struct ps_prochandle main_ph;
static td_thragent_t *main_ta;
static int sol_thread_active = 0;
static struct cleanup * save_inferior_pid PARAMS ((void));
static void restore_inferior_pid PARAMS ((int pid));
static char *td_err_string PARAMS ((td_err_e errcode));
static char *td_state_string PARAMS ((td_thr_state_e statecode));
static int thread_to_lwp PARAMS ((int thread_id, int default_lwp));
static void sol_thread_resume PARAMS ((int pid, int step,
enum target_signal signo));
static int lwp_to_thread PARAMS ((int lwp));
static int sol_thread_alive PARAMS ((int pid));
static void sol_core_close PARAMS ((int quitting));
static void init_sol_thread_ops PARAMS ((void));
static void init_sol_core_ops PARAMS ((void));
#define THREAD_FLAG 0x80000000
#define is_thread(ARG) (((ARG) & THREAD_FLAG) != 0)
#define is_lwp(ARG) (((ARG) & THREAD_FLAG) == 0)
#define GET_LWP(LWP_ID) (TIDGET(LWP_ID))
#define GET_THREAD(THREAD_ID) (((THREAD_ID) >> 16) & 0x7fff)
#define BUILD_LWP(LWP_ID, PID) ((LWP_ID) << 16 | (PID))
#define BUILD_THREAD(THREAD_ID, PID) (THREAD_FLAG | BUILD_LWP (THREAD_ID, PID))
/* Pointers to routines from lithread_db resolved by dlopen() */
static void
(*p_td_log) (const int on_off);
static td_err_e
(*p_td_ta_new) (const struct ps_prochandle *ph_p, td_thragent_t **ta_pp);
static td_err_e
(*p_td_ta_delete) (td_thragent_t *ta_p);
static td_err_e
(*p_td_init) (void);
static td_err_e
(*p_td_ta_get_ph) (const td_thragent_t *ta_p, struct ps_prochandle **ph_pp);
static td_err_e
(*p_td_ta_get_nthreads) (const td_thragent_t *ta_p, int *nthread_p);
static td_err_e
(*p_td_ta_tsd_iter) (const td_thragent_t *ta_p, td_key_iter_f *cb, void *cbdata_p);
static td_err_e
(*p_td_ta_thr_iter) (const td_thragent_t *ta_p, td_thr_iter_f *cb, void *cbdata_p, td_thr_state_e state,
int ti_pri, sigset_t *ti_sigmask_p, unsigned ti_user_flags);
static td_err_e
(*p_td_thr_validate) (const td_thrhandle_t *th_p);
static td_err_e
(*p_td_thr_tsd) (const td_thrhandle_t *th_p, const thread_key_t key, void **data_pp);
static td_err_e
(*p_td_thr_get_info) (const td_thrhandle_t *th_p, td_thrinfo_t *ti_p);
static td_err_e
(*p_td_thr_getfpregs) (const td_thrhandle_t *th_p, prfpregset_t *fpregset);
static td_err_e
(*p_td_thr_getxregsize) (const td_thrhandle_t *th_p, int *xregsize);
static td_err_e
(*p_td_thr_getxregs) (const td_thrhandle_t *th_p, const caddr_t xregset);
static td_err_e
(*p_td_thr_sigsetmask) (const td_thrhandle_t *th_p, const sigset_t ti_sigmask);
static td_err_e
(*p_td_thr_setprio) (const td_thrhandle_t *th_p, const int ti_pri);
static td_err_e
(*p_td_thr_setsigpending) (const td_thrhandle_t *th_p, const uchar_t ti_pending_flag, const sigset_t ti_pending);
static td_err_e
(*p_td_thr_setfpregs) (const td_thrhandle_t *th_p, const prfpregset_t *fpregset);
static td_err_e
(*p_td_thr_setxregs) (const td_thrhandle_t *th_p, const caddr_t xregset);
static td_err_e
(*p_td_ta_map_id2thr) (const td_thragent_t *ta_p, thread_t tid, td_thrhandle_t *th_p);
static td_err_e
(*p_td_ta_map_lwp2thr) (const td_thragent_t *ta_p, lwpid_t lwpid, td_thrhandle_t *th_p);
static td_err_e
(*p_td_thr_getgregs) (const td_thrhandle_t *th_p, prgregset_t regset);
static td_err_e
(*p_td_thr_setgregs) (const td_thrhandle_t *th_p, const prgregset_t regset);
/*
LOCAL FUNCTION
td_err_string - Convert a thread_db error code to a string
SYNOPSIS
char * td_err_string (errcode)
DESCRIPTION
Return the thread_db error string associated with errcode. If errcode
is unknown, then return a message.
*/
static char *
td_err_string (errcode)
td_err_e errcode;
{
static struct string_map
td_err_table[] = {
{TD_OK, "generic \"call succeeded\""},
{TD_ERR, "generic error."},
{TD_NOTHR, "no thread can be found to satisfy query"},
{TD_NOSV, "no synch. variable can be found to satisfy query"},
{TD_NOLWP, "no lwp can be found to satisfy query"},
{TD_BADPH, "invalid process handle"},
{TD_BADTH, "invalid thread handle"},
{TD_BADSH, "invalid synchronization handle"},
{TD_BADTA, "invalid thread agent"},
{TD_BADKEY, "invalid key"},
{TD_NOMSG, "td_thr_event_getmsg() called when there was no message"},
{TD_NOFPREGS, "FPU register set not available for given thread"},
{TD_NOLIBTHREAD, "application not linked with libthread"},
{TD_NOEVENT, "requested event is not supported"},
{TD_NOCAPAB, "capability not available"},
{TD_DBERR, "Debugger service failed"},
{TD_NOAPLIC, "Operation not applicable to"},
{TD_NOTSD, "No thread specific data for this thread"},
{TD_MALLOC, "Malloc failed"},
{TD_PARTIALREG, "Only part of register set was writen/read"},
{TD_NOXREGS, "X register set not available for given thread"}
};
const int td_err_size = sizeof td_err_table / sizeof (struct string_map);
int i;
static char buf[50];
for (i = 0; i < td_err_size; i++)
if (td_err_table[i].num == errcode)
return td_err_table[i].str;
sprintf (buf, "Unknown thread_db error code: %d", errcode);
return buf;
}
/*
LOCAL FUNCTION
td_state_string - Convert a thread_db state code to a string
SYNOPSIS
char * td_state_string (statecode)
DESCRIPTION
Return the thread_db state string associated with statecode. If
statecode is unknown, then return a message.
*/
static char *
td_state_string (statecode)
td_thr_state_e statecode;
{
static struct string_map
td_thr_state_table[] = {
{TD_THR_ANY_STATE, "any state"},
{TD_THR_UNKNOWN, "unknown"},
{TD_THR_STOPPED, "stopped"},
{TD_THR_RUN, "run"},
{TD_THR_ACTIVE, "active"},
{TD_THR_ZOMBIE, "zombie"},
{TD_THR_SLEEP, "sleep"},
{TD_THR_STOPPED_ASLEEP, "stopped asleep"}
};
const int td_thr_state_table_size = sizeof td_thr_state_table / sizeof (struct string_map);
int i;
static char buf[50];
for (i = 0; i < td_thr_state_table_size; i++)
if (td_thr_state_table[i].num == statecode)
return td_thr_state_table[i].str;
sprintf (buf, "Unknown thread_db state code: %d", statecode);
return buf;
}
/*
LOCAL FUNCTION
thread_to_lwp - Convert a Posix or Solaris thread id to a LWP id.
SYNOPSIS
int thread_to_lwp (thread_id, default_lwp)
DESCRIPTION
This function converts a Posix or Solaris thread id to a lightweight
process id. If thread_id is non-existent, that's an error. If it's
an inactive thread, then we return default_lwp.
NOTES
This function probably shouldn't call error()...
*/
static int
thread_to_lwp (thread_id, default_lwp)
int thread_id;
int default_lwp;
{
td_thrinfo_t ti;
td_thrhandle_t th;
td_err_e val;
if (is_lwp (thread_id))
return thread_id; /* It's already an LWP id */
/* It's a thread. Convert to lwp */
val = p_td_ta_map_id2thr (main_ta, GET_THREAD (thread_id), &th);
if (val == TD_NOTHR)
return -1; /* thread must have terminated */
else if (val != TD_OK)
error ("thread_to_lwp: td_ta_map_id2thr %s", td_err_string (val));
val = p_td_thr_get_info (&th, &ti);
if (val == TD_NOTHR)
return -1; /* thread must have terminated */
else if (val != TD_OK)
error ("thread_to_lwp: td_thr_get_info: %s", td_err_string (val));
if (ti.ti_state != TD_THR_ACTIVE)
{
if (default_lwp != -1)
return default_lwp;
error ("thread_to_lwp: thread state not active: %s",
td_state_string (ti.ti_state));
}
return BUILD_LWP (ti.ti_lid, PIDGET (thread_id));
}
/*
LOCAL FUNCTION
lwp_to_thread - Convert a LWP id to a Posix or Solaris thread id.
SYNOPSIS
int lwp_to_thread (lwp_id)
DESCRIPTION
This function converts a lightweight process id to a Posix or Solaris
thread id. If thread_id is non-existent, that's an error.
NOTES
This function probably shouldn't call error()...
*/
static int
lwp_to_thread (lwp)
int lwp;
{
td_thrinfo_t ti;
td_thrhandle_t th;
td_err_e val;
if (is_thread (lwp))
return lwp; /* It's already a thread id */
/* It's an lwp. Convert it to a thread id. */
if (!sol_thread_alive (lwp))
return -1; /* defunct lwp */
val = p_td_ta_map_lwp2thr (main_ta, GET_LWP (lwp), &th);
if (val == TD_NOTHR)
return -1; /* thread must have terminated */
else if (val != TD_OK)
error ("lwp_to_thread: td_ta_map_lwp2thr: %s.", td_err_string (val));
val = p_td_thr_validate (&th);
if (val == TD_NOTHR)
return lwp; /* libthread doesn't know about it, just return lwp */
else if (val != TD_OK)
error ("lwp_to_thread: td_thr_validate: %s.", td_err_string (val));
val = p_td_thr_get_info (&th, &ti);
if (val == TD_NOTHR)
return -1; /* thread must have terminated */
else if (val != TD_OK)
error ("lwp_to_thread: td_thr_get_info: %s.", td_err_string (val));
return BUILD_THREAD (ti.ti_tid, PIDGET (lwp));
}
/*
LOCAL FUNCTION
save_inferior_pid - Save inferior_pid on the cleanup list
restore_inferior_pid - Restore inferior_pid from the cleanup list
SYNOPSIS
struct cleanup *save_inferior_pid ()
void restore_inferior_pid (int pid)
DESCRIPTION
These two functions act in unison to restore inferior_pid in
case of an error.
NOTES
inferior_pid is a global variable that needs to be changed by many of
these routines before calling functions in procfs.c. In order to
guarantee that inferior_pid gets restored (in case of errors), you
need to call save_inferior_pid before changing it. At the end of the
function, you should invoke do_cleanups to restore it.
*/
static struct cleanup *
save_inferior_pid ()
{
return make_cleanup (restore_inferior_pid, inferior_pid);
}
static void
restore_inferior_pid (pid)
int pid;
{
inferior_pid = pid;
}
/* Most target vector functions from here on actually just pass through to
procfs.c, as they don't need to do anything specific for threads. */
/* ARGSUSED */
static void
sol_thread_open (arg, from_tty)
char *arg;
int from_tty;
{
procfs_ops.to_open (arg, from_tty);
}
/* Attach to process PID, then initialize for debugging it
and wait for the trace-trap that results from attaching. */
static void
sol_thread_attach (args, from_tty)
char *args;
int from_tty;
{
procfs_ops.to_attach (args, from_tty);
/* Must get symbols from solibs before libthread_db can run! */
SOLIB_ADD ((char *)0, from_tty, (struct target_ops *)0);
if (sol_thread_active)
{
printf_filtered ("sol-thread active.\n");
main_ph.pid = inferior_pid; /* Save for xfer_memory */
push_target (&sol_thread_ops);
inferior_pid = lwp_to_thread (inferior_pid);
if (inferior_pid == -1)
inferior_pid = main_ph.pid;
else
add_thread (inferior_pid);
}
/* XXX - might want to iterate over all the threads and register them. */
}
/* Take a program previously attached to and detaches it.
The program resumes execution and will no longer stop
on signals, etc. We'd better not have left any breakpoints
in the program or it'll die when it hits one. For this
to work, it may be necessary for the process to have been
previously attached. It *might* work if the program was
started via the normal ptrace (PTRACE_TRACEME). */
static void
sol_thread_detach (args, from_tty)
char *args;
int from_tty;
{
unpush_target (&sol_thread_ops);
procfs_ops.to_detach (args, from_tty);
}
/* Resume execution of process PID. If STEP is nozero, then
just single step it. If SIGNAL is nonzero, restart it with that
signal activated. We may have to convert pid from a thread-id to an LWP id
for procfs. */
static void
sol_thread_resume (pid, step, signo)
int pid;
int step;
enum target_signal signo;
{
struct cleanup *old_chain;
old_chain = save_inferior_pid ();
inferior_pid = thread_to_lwp (inferior_pid, main_ph.pid);
if (inferior_pid == -1)
inferior_pid = procfs_first_available ();
if (pid != -1)
{
int save_pid = pid;
pid = thread_to_lwp (pid, -2);
if (pid == -2) /* Inactive thread */
error ("This version of Solaris can't start inactive threads.");
if (info_verbose && pid == -1)
warning ("Specified thread %d seems to have terminated",
GET_THREAD (save_pid));
}
procfs_ops.to_resume (pid, step, signo);
do_cleanups (old_chain);
}
/* Wait for any threads to stop. We may have to convert PID from a thread id
to a LWP id, and vice versa on the way out. */
static int
sol_thread_wait (pid, ourstatus)
int pid;
struct target_waitstatus *ourstatus;
{
int rtnval;
int save_pid;
struct cleanup *old_chain;
save_pid = inferior_pid;
old_chain = save_inferior_pid ();
inferior_pid = thread_to_lwp (inferior_pid, main_ph.pid);
if (inferior_pid == -1)
inferior_pid = procfs_first_available ();
if (pid != -1)
{
int save_pid = pid;
pid = thread_to_lwp (pid, -2);
if (pid == -2) /* Inactive thread */
error ("This version of Solaris can't start inactive threads.");
if (info_verbose && pid == -1)
warning ("Specified thread %d seems to have terminated",
GET_THREAD (save_pid));
}
rtnval = procfs_ops.to_wait (pid, ourstatus);
if (ourstatus->kind != TARGET_WAITKIND_EXITED)
{
/* Map the LWP of interest back to the appropriate thread ID */
rtnval = lwp_to_thread (rtnval);
if (rtnval == -1)
rtnval = save_pid;
/* See if we have a new thread */
if (is_thread (rtnval)
&& rtnval != save_pid
&& !in_thread_list (rtnval))
{
printf_filtered ("[New %s]\n", target_pid_to_str (rtnval));
add_thread (rtnval);
}
}
/* During process initialization, we may get here without the thread package
being initialized, since that can only happen after we've found the shared
libs. */
do_cleanups (old_chain);
return rtnval;
}
static void
sol_thread_fetch_registers (regno)
int regno;
{
thread_t thread;
td_thrhandle_t thandle;
td_err_e val;
prgregset_t gregset;
prfpregset_t fpregset;
#if 0
int xregsize;
caddr_t xregset;
#endif
if (!is_thread (inferior_pid))
{ /* LWP: pass the request on to procfs.c */
if (target_has_execution)
procfs_ops.to_fetch_registers (regno);
else
orig_core_ops.to_fetch_registers (regno);
return;
}
/* Solaris thread: convert inferior_pid into a td_thrhandle_t */
thread = GET_THREAD (inferior_pid);
if (thread == 0)
error ("sol_thread_fetch_registers: thread == 0");
val = p_td_ta_map_id2thr (main_ta, thread, &thandle);
if (val != TD_OK)
error ("sol_thread_fetch_registers: td_ta_map_id2thr: %s",
td_err_string (val));
/* Get the integer regs */
val = p_td_thr_getgregs (&thandle, gregset);
if (val != TD_OK
&& val != TD_PARTIALREG)
error ("sol_thread_fetch_registers: td_thr_getgregs %s",
td_err_string (val));
/* For the sparc, TD_PARTIALREG means that only i0->i7, l0->l7, pc and sp
are saved (by a thread context switch). */
/* And, now the fp regs */
val = p_td_thr_getfpregs (&thandle, &fpregset);
if (val != TD_OK
&& val != TD_NOFPREGS)
error ("sol_thread_fetch_registers: td_thr_getfpregs %s",
td_err_string (val));
/* Note that we must call supply_{g fp}regset *after* calling the td routines
because the td routines call ps_lget* which affect the values stored in the
registers array. */
supply_gregset (gregset);
supply_fpregset (&fpregset);
#if 0
/* thread_db doesn't seem to handle this right */
val = td_thr_getxregsize (&thandle, &xregsize);
if (val != TD_OK && val != TD_NOXREGS)
error ("sol_thread_fetch_registers: td_thr_getxregsize %s",
td_err_string (val));
if (val == TD_OK)
{
xregset = alloca (xregsize);
val = td_thr_getxregs (&thandle, xregset);
if (val != TD_OK)
error ("sol_thread_fetch_registers: td_thr_getxregs %s",
td_err_string (val));
}
#endif
}
static void
sol_thread_store_registers (regno)
int regno;
{
thread_t thread;
td_thrhandle_t thandle;
td_err_e val;
prgregset_t regset;
prfpregset_t fpregset;
#if 0
int xregsize;
caddr_t xregset;
#endif
if (!is_thread (inferior_pid))
{ /* LWP: pass the request on to procfs.c */
procfs_ops.to_store_registers (regno);
return;
}
/* Solaris thread: convert inferior_pid into a td_thrhandle_t */
thread = GET_THREAD (inferior_pid);
val = p_td_ta_map_id2thr (main_ta, thread, &thandle);
if (val != TD_OK)
error ("sol_thread_store_registers: td_ta_map_id2thr %s",
td_err_string (val));
if (regno != -1)
{ /* Not writing all the regs */
/* save new register value */
char old_value[REGISTER_SIZE];
memcpy(old_value, & registers[REGISTER_BYTE(regno)], REGISTER_SIZE);
val = p_td_thr_getgregs (&thandle, regset);
if (val != TD_OK)
error ("sol_thread_store_registers: td_thr_getgregs %s",
td_err_string (val));
val = p_td_thr_getfpregs (&thandle, &fpregset);
if (val != TD_OK)
error ("sol_thread_store_registers: td_thr_getfpregs %s",
td_err_string (val));
/* restore new register value */
memcpy(& registers[REGISTER_BYTE(regno)], old_value, REGISTER_SIZE);
#if 0
/* thread_db doesn't seem to handle this right */
val = td_thr_getxregsize (&thandle, &xregsize);
if (val != TD_OK && val != TD_NOXREGS)
error ("sol_thread_store_registers: td_thr_getxregsize %s",
td_err_string (val));
if (val == TD_OK)
{
xregset = alloca (xregsize);
val = td_thr_getxregs (&thandle, xregset);
if (val != TD_OK)
error ("sol_thread_store_registers: td_thr_getxregs %s",
td_err_string (val));
}
#endif
}
fill_gregset (regset, regno);
fill_fpregset (&fpregset, regno);
val = p_td_thr_setgregs (&thandle, regset);
if (val != TD_OK)
error ("sol_thread_store_registers: td_thr_setgregs %s",
td_err_string (val));
val = p_td_thr_setfpregs (&thandle, &fpregset);
if (val != TD_OK)
error ("sol_thread_store_registers: td_thr_setfpregs %s",
td_err_string (val));
#if 0
/* thread_db doesn't seem to handle this right */
val = td_thr_getxregsize (&thandle, &xregsize);
if (val != TD_OK && val != TD_NOXREGS)
error ("sol_thread_store_registers: td_thr_getxregsize %s",
td_err_string (val));
/* Should probably do something about writing the xregs here, but what are
they? */
#endif
}
/* Get ready to modify the registers array. On machines which store
individual registers, this doesn't need to do anything. On machines
which store all the registers in one fell swoop, this makes sure
that registers contains all the registers from the program being
debugged. */
static void
sol_thread_prepare_to_store ()
{
procfs_ops.to_prepare_to_store ();
}
static int
sol_thread_xfer_memory (memaddr, myaddr, len, dowrite, target)
CORE_ADDR memaddr;
char *myaddr;
int len;
int dowrite;
struct target_ops *target; /* ignored */
{
int retval;
struct cleanup *old_chain;
old_chain = save_inferior_pid ();
if (is_thread (inferior_pid) || /* A thread */
!target_thread_alive (inferior_pid)) /* An lwp, but not alive */
inferior_pid = procfs_first_available (); /* Find any live lwp. */
/* Note: don't need to call switch_to_thread; we're just reading memory. */
if (target_has_execution)
retval = procfs_ops.to_xfer_memory (memaddr, myaddr, len, dowrite, target);
else
retval = orig_core_ops.to_xfer_memory (memaddr, myaddr, len,
dowrite, target);
do_cleanups (old_chain);
return retval;
}
/* Print status information about what we're accessing. */
static void
sol_thread_files_info (ignore)
struct target_ops *ignore;
{
procfs_ops.to_files_info (ignore);
}
static void
sol_thread_kill_inferior ()
{
procfs_ops.to_kill ();
}
static void
sol_thread_notice_signals (pid)
int pid;
{
procfs_ops.to_notice_signals (PIDGET (pid));
}
/* Fork an inferior process, and start debugging it with /proc. */
static void
sol_thread_create_inferior (exec_file, allargs, env)
char *exec_file;
char *allargs;
char **env;
{
procfs_ops.to_create_inferior (exec_file, allargs, env);
if (sol_thread_active && inferior_pid != 0)
{
main_ph.pid = inferior_pid; /* Save for xfer_memory */
push_target (&sol_thread_ops);
inferior_pid = lwp_to_thread (inferior_pid);
if (inferior_pid == -1)
inferior_pid = main_ph.pid;
add_thread (inferior_pid);
}
}
/* This routine is called whenever a new symbol table is read in, or when all
symbol tables are removed. libthread_db can only be initialized when it
finds the right variables in libthread.so. Since it's a shared library,
those variables don't show up until the library gets mapped and the symbol
table is read in. */
void
sol_thread_new_objfile (objfile)
struct objfile *objfile;
{
td_err_e val;
if (!objfile)
{
sol_thread_active = 0;
return;
}
/* don't do anything if init failed to resolve the libthread_db library */
if (!procfs_suppress_run)
return;
/* Now, initialize the thread debugging library. This needs to be done after
the shared libraries are located because it needs information from the
user's thread library. */
val = p_td_init ();
if (val != TD_OK)
error ("target_new_objfile: td_init: %s", td_err_string (val));
val = p_td_ta_new (&main_ph, &main_ta);
if (val == TD_NOLIBTHREAD)
return;
else if (val != TD_OK)
error ("target_new_objfile: td_ta_new: %s", td_err_string (val));
sol_thread_active = 1;
}
/* Clean up after the inferior dies. */
static void
sol_thread_mourn_inferior ()
{
unpush_target (&sol_thread_ops);
procfs_ops.to_mourn_inferior ();
}
/* Mark our target-struct as eligible for stray "run" and "attach" commands. */
static int
sol_thread_can_run ()
{
return procfs_suppress_run;
}
/*
LOCAL FUNCTION
sol_thread_alive - test thread for "aliveness"
SYNOPSIS
static bool sol_thread_alive (int pid);
DESCRIPTION
returns true if thread still active in inferior.
*/
static int
sol_thread_alive (pid)
int pid;
{
if (is_thread (pid)) /* non-kernel thread */
{
td_err_e val;
td_thrhandle_t th;
pid = GET_THREAD (pid);
if ((val = p_td_ta_map_id2thr (main_ta, pid, &th)) != TD_OK)
return 0; /* thread not found */
if ((val = p_td_thr_validate (&th)) != TD_OK)
return 0; /* thread not valid */
return 1; /* known thread: return true */
}
else /* kernel thread (LWP): let procfs test it */
{
if (target_has_execution)
return procfs_ops.to_thread_alive (pid);
else
return orig_core_ops.to_thread_alive (pid);
}
}
static void
sol_thread_stop ()
{
procfs_ops.to_stop ();
}
/* These routines implement the lower half of the thread_db interface. Ie: the
ps_* routines. */
/* Various versions of <proc_service.h> have slightly
different function prototypes. In particular, we have
NEWER OLDER
struct ps_prochandle * const struct ps_prochandle *
void* char*
const void* char*
int size_t
Which one you have depends on solaris version and what
patches you've applied. On the theory that there are
only two major variants, we have configure check the
prototype of ps_pdwrite (), and use that info to make
appropriate typedefs here. */
#ifdef PROC_SERVICE_IS_OLD
typedef const struct ps_prochandle * gdb_ps_prochandle_t;
typedef char * gdb_ps_read_buf_t;
typedef char * gdb_ps_write_buf_t;
typedef int gdb_ps_size_t;
#else
typedef struct ps_prochandle * gdb_ps_prochandle_t;
typedef void * gdb_ps_read_buf_t;
typedef const void * gdb_ps_write_buf_t;
typedef size_t gdb_ps_size_t;
#endif
/* The next four routines are called by thread_db to tell us to stop and stop
a particular process or lwp. Since GDB ensures that these are all stopped
by the time we call anything in thread_db, these routines need to do
nothing. */
ps_err_e
ps_pstop (gdb_ps_prochandle_t ph)
{
return PS_OK;
}
ps_err_e
ps_pcontinue (gdb_ps_prochandle_t ph)
{
return PS_OK;
}
ps_err_e
ps_lstop (gdb_ps_prochandle_t ph, lwpid_t lwpid)
{
return PS_OK;
}
ps_err_e
ps_lcontinue (gdb_ps_prochandle_t ph, lwpid_t lwpid)
{
return PS_OK;
}
ps_err_e
ps_pglobal_lookup (gdb_ps_prochandle_t ph, const char *ld_object_name,
const char *ld_symbol_name, paddr_t *ld_symbol_addr)
{
struct minimal_symbol *ms;
ms = lookup_minimal_symbol (ld_symbol_name, NULL, NULL);
if (!ms)
return PS_NOSYM;
*ld_symbol_addr = SYMBOL_VALUE_ADDRESS (ms);
return PS_OK;
}
/* Common routine for reading and writing memory. */
static ps_err_e
rw_common (int dowrite, const struct ps_prochandle *ph, paddr_t addr,
char *buf, int size)
{
struct cleanup *old_chain;
old_chain = save_inferior_pid ();
if (is_thread (inferior_pid) || /* A thread */
!target_thread_alive (inferior_pid)) /* An lwp, but not alive */
inferior_pid = procfs_first_available (); /* Find any live lwp. */
/* Note: don't need to call switch_to_thread; we're just reading memory. */
while (size > 0)
{
int cc;
if (target_has_execution)
cc = procfs_ops.to_xfer_memory (addr, buf, size, dowrite, &procfs_ops);
else
cc = orig_core_ops.to_xfer_memory (addr, buf, size, dowrite, &core_ops);
if (cc < 0)
{
if (dowrite == 0)
print_sys_errmsg ("rw_common (): read", errno);
else
print_sys_errmsg ("rw_common (): write", errno);
do_cleanups (old_chain);
return PS_ERR;
}
size -= cc;
buf += cc;
}
do_cleanups (old_chain);
return PS_OK;
}
ps_err_e
ps_pdread (gdb_ps_prochandle_t ph, paddr_t addr,
gdb_ps_read_buf_t buf, gdb_ps_size_t size)
{
return rw_common (0, ph, addr, buf, size);
}
ps_err_e
ps_pdwrite (gdb_ps_prochandle_t ph, paddr_t addr,
gdb_ps_write_buf_t buf, gdb_ps_size_t size)
{
return rw_common (1, ph, addr, (char*) buf, size);
}
ps_err_e
ps_ptread (gdb_ps_prochandle_t ph, paddr_t addr,
gdb_ps_read_buf_t buf, gdb_ps_size_t size)
{
return rw_common (0, ph, addr, buf, size);
}
ps_err_e
ps_ptwrite (gdb_ps_prochandle_t ph, paddr_t addr,
gdb_ps_write_buf_t buf, gdb_ps_size_t size)
{
return rw_common (1, ph, addr, (char*) buf, size);
}
/* Get integer regs */
ps_err_e
ps_lgetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
prgregset_t gregset)
{
struct cleanup *old_chain;
old_chain = save_inferior_pid ();
inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid));
if (target_has_execution)
procfs_ops.to_fetch_registers (-1);
else
orig_core_ops.to_fetch_registers (-1);
fill_gregset (gregset, -1);
do_cleanups (old_chain);
return PS_OK;
}
/* Set integer regs */
ps_err_e
ps_lsetregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
const prgregset_t gregset)
{
struct cleanup *old_chain;
old_chain = save_inferior_pid ();
inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid));
supply_gregset (gregset);
if (target_has_execution)
procfs_ops.to_store_registers (-1);
else
orig_core_ops.to_store_registers (-1);
do_cleanups (old_chain);
return PS_OK;
}
void
ps_plog (const char *fmt, ...)
{
va_list args;
va_start (args, fmt);
vfprintf_filtered (gdb_stderr, fmt, args);
}
/* Get size of extra register set. Currently a noop. */
ps_err_e
ps_lgetxregsize (gdb_ps_prochandle_t ph, lwpid_t lwpid, int *xregsize)
{
#if 0
int lwp_fd;
int regsize;
ps_err_e val;
val = get_lwp_fd (ph, lwpid, &lwp_fd);
if (val != PS_OK)
return val;
if (ioctl (lwp_fd, PIOCGXREGSIZE, ®size))
{
if (errno == EINVAL)
return PS_NOFREGS; /* XXX Wrong code, but this is the closest
thing in proc_service.h */
print_sys_errmsg ("ps_lgetxregsize (): PIOCGXREGSIZE", errno);
return PS_ERR;
}
#endif
return PS_OK;
}
/* Get extra register set. Currently a noop. */
ps_err_e
ps_lgetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset)
{
#if 0
int lwp_fd;
ps_err_e val;
val = get_lwp_fd (ph, lwpid, &lwp_fd);
if (val != PS_OK)
return val;
if (ioctl (lwp_fd, PIOCGXREG, xregset))
{
print_sys_errmsg ("ps_lgetxregs (): PIOCGXREG", errno);
return PS_ERR;
}
#endif
return PS_OK;
}
/* Set extra register set. Currently a noop. */
ps_err_e
ps_lsetxregs (gdb_ps_prochandle_t ph, lwpid_t lwpid, caddr_t xregset)
{
#if 0
int lwp_fd;
ps_err_e val;
val = get_lwp_fd (ph, lwpid, &lwp_fd);
if (val != PS_OK)
return val;
if (ioctl (lwp_fd, PIOCSXREG, xregset))
{
print_sys_errmsg ("ps_lsetxregs (): PIOCSXREG", errno);
return PS_ERR;
}
#endif
return PS_OK;
}
/* Get floating-point regs. */
ps_err_e
ps_lgetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
prfpregset_t *fpregset)
{
struct cleanup *old_chain;
old_chain = save_inferior_pid ();
inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid));
if (target_has_execution)
procfs_ops.to_fetch_registers (-1);
else
orig_core_ops.to_fetch_registers (-1);
fill_fpregset (fpregset, -1);
do_cleanups (old_chain);
return PS_OK;
}
/* Set floating-point regs. */
ps_err_e
ps_lsetfpregs (gdb_ps_prochandle_t ph, lwpid_t lwpid,
const prfpregset_t *fpregset)
{
struct cleanup *old_chain;
old_chain = save_inferior_pid ();
inferior_pid = BUILD_LWP (lwpid, PIDGET (inferior_pid));
supply_fpregset (fpregset);
if (target_has_execution)
procfs_ops.to_store_registers (-1);
else
orig_core_ops.to_store_registers (-1);
do_cleanups (old_chain);
return PS_OK;
}
#ifdef TM_I386SOL2_H
/* Get local descriptor table. */
#include <sys/procfs.h>
#include <sys/reg.h>
#include <sys/sysi86.h>
static int nldt_allocated = 0;
static struct ssd *ldt_bufp = NULL;
ps_err_e
ps_lgetLDT (gdb_ps_prochandle_t ph, lwpid_t lwpid,
struct ssd *pldt)
{
gregset_t gregset;
int lwp_fd;
ps_err_e val;
int nldt;
int i;
/* Get procfs file descriptor for the LWP. */
lwp_fd = procfs_get_pid_fd (BUILD_LWP (lwpid, PIDGET (inferior_pid)));
if (lwp_fd < 0)
return PS_BADLID;
/* Fetch registers und LDT descriptors. */
if (ioctl (lwp_fd, PIOCGREG, &gregset) == -1)
return PS_ERR;
if (ioctl (lwp_fd, PIOCNLDT, &nldt) == -1)
return PS_ERR;
if (nldt_allocated < nldt)
{
ldt_bufp
= (struct ssd *) xrealloc (ldt_bufp, (nldt + 1) * sizeof (struct ssd));
nldt_allocated = nldt;
}
if (ioctl (lwp_fd, PIOCLDT, ldt_bufp) == -1)
return PS_ERR;
/* Search LDT for the LWP via register GS. */
for (i = 0; i < nldt; i++)
{
if (ldt_bufp[i].sel == (gregset[GS] & 0xffff))
{
*pldt = ldt_bufp[i];
return PS_OK;
}
}
/* LDT not found. */
return PS_ERR;
}
#endif /* TM_I386SOL2_H */
/* Convert a pid to printable form. */
char *
solaris_pid_to_str (pid)
int pid;
{
static char buf[100];
/* in case init failed to resolve the libthread_db library */
if (!procfs_suppress_run)
return procfs_pid_to_str (pid);
if (is_thread (pid))
{
int lwp;
lwp = thread_to_lwp (pid, -2);
if (lwp == -1)
sprintf (buf, "Thread %d (defunct)", GET_THREAD (pid));
else if (lwp != -2)
sprintf (buf, "Thread %d (LWP %d)", GET_THREAD (pid), GET_LWP (lwp));
else
sprintf (buf, "Thread %d ", GET_THREAD (pid));
}
else if (GET_LWP (pid) != 0)
sprintf (buf, "LWP %d ", GET_LWP (pid));
else
sprintf (buf, "process %d ", PIDGET (pid));
return buf;
}
/* Worker bee for find_new_threads
Callback function that gets called once per USER thread (i.e., not
kernel) thread. */
static int
sol_find_new_threads_callback(th, ignored)
const td_thrhandle_t *th;
void *ignored;
{
td_err_e retval;
td_thrinfo_t ti;
int pid;
if ((retval = p_td_thr_get_info(th, &ti)) != TD_OK)
{
return -1;
}
pid = BUILD_THREAD(ti.ti_tid, PIDGET(inferior_pid));
if (!in_thread_list(pid))
add_thread(pid);
return 0;
}
void
sol_find_new_threads()
{
/* don't do anything if init failed to resolve the libthread_db library */
if (!procfs_suppress_run)
return;
if (inferior_pid == -1)
{
printf_filtered("No process.\n");
return;
}
p_td_ta_thr_iter (main_ta, sol_find_new_threads_callback, (void *)0,
TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY,
TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS);
}
static void
sol_core_open (filename, from_tty)
char *filename;
int from_tty;
{
orig_core_ops.to_open (filename, from_tty);
}
static void
sol_core_close (quitting)
int quitting;
{
orig_core_ops.to_close (quitting);
}
static void
sol_core_detach (args, from_tty)
char *args;
int from_tty;
{
unpush_target (&core_ops);
orig_core_ops.to_detach (args, from_tty);
}
static void
sol_core_files_info (t)
struct target_ops *t;
{
orig_core_ops.to_files_info (t);
}
#ifdef MAINTENANCE_CMDS
/* Worker bee for info sol-thread command. This is a callback function that
gets called once for each Solaris thread (ie. not kernel thread) in the
inferior. Print anything interesting that we can think of. */
static int
info_cb (th, s)
const td_thrhandle_t *th;
void *s;
{
td_err_e ret;
td_thrinfo_t ti;
struct minimal_symbol *msym;
if ((ret = p_td_thr_get_info (th, &ti)) == TD_OK)
{
printf_filtered ("%s thread #%d, lwp %d, ",
ti.ti_type == TD_THR_SYSTEM ? "system" : "user ",
ti.ti_tid, ti.ti_lid);
switch (ti.ti_state) {
default:
case TD_THR_UNKNOWN: printf_filtered ("<unknown state>"); break;
case TD_THR_STOPPED: printf_filtered ("(stopped)"); break;
case TD_THR_RUN: printf_filtered ("(run) "); break;
case TD_THR_ACTIVE: printf_filtered ("(active) "); break;
case TD_THR_ZOMBIE: printf_filtered ("(zombie) "); break;
case TD_THR_SLEEP: printf_filtered ("(asleep) "); break;
case TD_THR_STOPPED_ASLEEP:
printf_filtered ("(stopped asleep)"); break;
}
/* Print thr_create start function: */
if (ti.ti_startfunc != 0)
if (msym = lookup_minimal_symbol_by_pc (ti.ti_startfunc))
printf_filtered (" startfunc: %s\n", SYMBOL_NAME (msym));
else
printf_filtered (" startfunc: 0x%08x\n", ti.ti_startfunc);
/* If thread is asleep, print function that went to sleep: */
if (ti.ti_state == TD_THR_SLEEP)
if (msym = lookup_minimal_symbol_by_pc (ti.ti_pc))
printf_filtered (" - Sleep func: %s\n", SYMBOL_NAME (msym));
else
printf_filtered (" - Sleep func: 0x%08x\n", ti.ti_startfunc);
/* Wrap up line, if necessary */
if (ti.ti_state != TD_THR_SLEEP && ti.ti_startfunc == 0)
printf_filtered ("\n"); /* don't you hate counting newlines? */
}
else
warning ("info sol-thread: failed to get info for thread.");
return 0;
}
/* List some state about each Solaris user thread in the inferior. */
static void
info_solthreads (args, from_tty)
char *args;
int from_tty;
{
p_td_ta_thr_iter (main_ta, info_cb, args,
TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY,
TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS);
}
#endif /* MAINTENANCE_CMDS */
static int
ignore (addr, contents)
CORE_ADDR addr;
char *contents;
{
return 0;
}
static void
init_sol_thread_ops ()
{
sol_thread_ops.to_shortname = "solaris-threads";
sol_thread_ops.to_longname = "Solaris threads and pthread.";
sol_thread_ops.to_doc = "Solaris threads and pthread support.";
sol_thread_ops.to_open = sol_thread_open;
sol_thread_ops.to_close = 0;
sol_thread_ops.to_attach = sol_thread_attach;
sol_thread_ops.to_detach = sol_thread_detach;
sol_thread_ops.to_resume = sol_thread_resume;
sol_thread_ops.to_wait = sol_thread_wait;
sol_thread_ops.to_fetch_registers = sol_thread_fetch_registers;
sol_thread_ops.to_store_registers = sol_thread_store_registers;
sol_thread_ops.to_prepare_to_store = sol_thread_prepare_to_store;
sol_thread_ops.to_xfer_memory = sol_thread_xfer_memory;
sol_thread_ops.to_files_info = sol_thread_files_info;
sol_thread_ops.to_insert_breakpoint = memory_insert_breakpoint;
sol_thread_ops.to_remove_breakpoint = memory_remove_breakpoint;
sol_thread_ops.to_terminal_init = terminal_init_inferior;
sol_thread_ops.to_terminal_inferior = terminal_inferior;
sol_thread_ops.to_terminal_ours_for_output = terminal_ours_for_output;
sol_thread_ops.to_terminal_ours = terminal_ours;
sol_thread_ops.to_terminal_info = child_terminal_info;
sol_thread_ops.to_kill = sol_thread_kill_inferior;
sol_thread_ops.to_load = 0;
sol_thread_ops.to_lookup_symbol = 0;
sol_thread_ops.to_create_inferior = sol_thread_create_inferior;
sol_thread_ops.to_mourn_inferior = sol_thread_mourn_inferior;
sol_thread_ops.to_can_run = sol_thread_can_run;
sol_thread_ops.to_notice_signals = sol_thread_notice_signals;
sol_thread_ops.to_thread_alive = sol_thread_alive;
sol_thread_ops.to_stop = sol_thread_stop;
sol_thread_ops.to_stratum = process_stratum;
sol_thread_ops.to_has_all_memory = 1;
sol_thread_ops.to_has_memory = 1;
sol_thread_ops.to_has_stack = 1;
sol_thread_ops.to_has_registers = 1;
sol_thread_ops.to_has_execution = 1;
sol_thread_ops.to_has_thread_control = tc_none;
sol_thread_ops.to_sections = 0;
sol_thread_ops.to_sections_end = 0;
sol_thread_ops.to_magic = OPS_MAGIC;
}
static void
init_sol_core_ops ()
{
sol_core_ops.to_shortname = "solaris-core";
sol_core_ops.to_longname = "Solaris core threads and pthread.";
sol_core_ops.to_doc = "Solaris threads and pthread support for core files.";
sol_core_ops.to_open = sol_core_open;
sol_core_ops.to_close = sol_core_close;
sol_core_ops.to_attach = sol_thread_attach;
sol_core_ops.to_detach = sol_core_detach;
/* sol_core_ops.to_resume = 0; */
/* sol_core_ops.to_wait = 0; */
sol_core_ops.to_fetch_registers = sol_thread_fetch_registers;
/* sol_core_ops.to_store_registers = 0; */
/* sol_core_ops.to_prepare_to_store = 0; */
sol_core_ops.to_xfer_memory = sol_thread_xfer_memory;
sol_core_ops.to_files_info = sol_core_files_info;
sol_core_ops.to_insert_breakpoint = ignore;
sol_core_ops.to_remove_breakpoint = ignore;
/* sol_core_ops.to_terminal_init = 0; */
/* sol_core_ops.to_terminal_inferior = 0; */
/* sol_core_ops.to_terminal_ours_for_output = 0; */
/* sol_core_ops.to_terminal_ours = 0; */
/* sol_core_ops.to_terminal_info = 0; */
/* sol_core_ops.to_kill = 0; */
/* sol_core_ops.to_load = 0; */
/* sol_core_ops.to_lookup_symbol = 0; */
sol_core_ops.to_create_inferior = sol_thread_create_inferior;
sol_core_ops.to_stratum = core_stratum;
sol_core_ops.to_has_all_memory = 0;
sol_core_ops.to_has_memory = 1;
sol_core_ops.to_has_stack = 1;
sol_core_ops.to_has_registers = 1;
sol_core_ops.to_has_execution = 0;
sol_core_ops.to_has_thread_control = tc_none;
sol_core_ops.to_sections = 0;
sol_core_ops.to_sections_end = 0;
sol_core_ops.to_magic = OPS_MAGIC;
}
/* we suppress the call to add_target of core_ops in corelow because
if there are two targets in the stratum core_stratum, find_core_target
won't know which one to return. see corelow.c for an additonal
comment on coreops_suppress_target. */
int coreops_suppress_target = 1;
void
_initialize_sol_thread ()
{
void *dlhandle;
init_sol_thread_ops ();
init_sol_core_ops ();
dlhandle = dlopen ("libthread_db.so.1", RTLD_NOW);
if (!dlhandle)
goto die;
#define resolve(X) \
if (!(p_##X = dlsym (dlhandle, #X))) \
goto die;
resolve (td_log);
resolve (td_ta_new);
resolve (td_ta_delete);
resolve (td_init);
resolve (td_ta_get_ph);
resolve (td_ta_get_nthreads);
resolve (td_ta_tsd_iter);
resolve (td_ta_thr_iter);
resolve (td_thr_validate);
resolve (td_thr_tsd);
resolve (td_thr_get_info);
resolve (td_thr_getfpregs);
resolve (td_thr_getxregsize);
resolve (td_thr_getxregs);
resolve (td_thr_sigsetmask);
resolve (td_thr_setprio);
resolve (td_thr_setsigpending);
resolve (td_thr_setfpregs);
resolve (td_thr_setxregs);
resolve (td_ta_map_id2thr);
resolve (td_ta_map_lwp2thr);
resolve (td_thr_getgregs);
resolve (td_thr_setgregs);
add_target (&sol_thread_ops);
procfs_suppress_run = 1;
#ifdef MAINTENANCE_CMDS
add_cmd ("sol-threads", class_maintenance, info_solthreads,
"Show info on Solaris user threads.\n", &maintenanceinfolist);
#endif /* MAINTENANCE_CMDS */
memcpy(&orig_core_ops, &core_ops, sizeof (struct target_ops));
memcpy(&core_ops, &sol_core_ops, sizeof (struct target_ops));
add_target (&core_ops);
return;
die:
fprintf_unfiltered (gdb_stderr, "[GDB will not be able to debug user-mode threads: %s]\n", dlerror ());
if (dlhandle)
dlclose (dlhandle);
/* allow the user to debug non-threaded core files */
add_target(&core_ops);
return;
}
|