summaryrefslogtreecommitdiffstats
path: root/languages/cpp/debugger/gdbcontroller.cpp
blob: a46b6d6abe7c2157a2235032a0f7baaf61f8c6ac (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
// *************************************************************************
//                          gdbcontroller.cpp  -  description
//                             -------------------
//    begin                : Sun Aug 8 1999
//    copyright            : (C) 1999 by John Birch
//    email                : jbb@tdevelop.org
// **************************************************************************
//
// **************************************************************************
// *                                                                        *
// *   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.                                  *
// *                                                                        *
// **************************************************************************

#include "gdbcontroller.h"

#include "breakpoint.h"
#include "gdbcommand.h"
#include "stty.h"
#include "domutil.h"
#include "settings.h"
#include "mi/miparser.h"

#include <kapplication.h>
#include <kconfig.h>
#include <kdebug.h>
#include <kglobal.h>
#include <klocale.h>
#include <kmessagebox.h>
#include <kprocess.h>
#include <twin.h>

#include <tqdatetime.h>
#include <tqfileinfo.h>
#include <tqregexp.h>
#include <tqstring.h>
#include <tqdir.h>
#include <tqvaluevector.h>
#include <tqeventloop.h>

#include <iostream>
#include <ctype.h>
#include <stdlib.h>
#include <assert.h>
#include <typeinfo>
using namespace std;

// **************************************************************************
//
// Does all the communication between gdb and the tdevelop's debugger code.
// Significatant classes being used here are
//
// GDBParser  - parses the "variable" data using the vartree and varitems
// VarTree    - where the variable data will end up
// FrameStack - tracks the program frames and allows the user to switch between
//              and therefore view the calling funtions and their data
// Breakpoint - Where and what to do with breakpoints.
// STTY       - the tty that the _application_ will run on.
//
// Significant variables
// state_     - be very careful setting this. The controller is totally
//              dependent on this reflecting the correct state. For instance,
//              if the app is busy but we don't think so, then we lose control
//              of the app. The only way to get out of these situations is to
//              delete (stop) the controller.
// currentFrame_
//            - Holds the frame number where and locals/variable information will
//              go to
//
// Certain commands need to be "wrapped", so that the output gdb produces is
// of the form "\032data_id gdb output \032data_id"
// Then a very simple parse can extract this gdb output and hand it off
// to its' respective parser.
// To do this we set the prompt to be \032data_id before the command and then
// reset to \032i to indicate the "idle".
//
// Note that the following does not work because in certain situations
// gdb can get an error in performing the command and therefore will not
// output the final echo. Hence the data will be thrown away.
// (certain "info locals" will generate this error.
//
//  queueCmd(new GDBCommand(TQString().sprintf("define printlocal\n"
//                                            "echo \32%c\ninfo locals\necho \32%c\n"
//                                            "end",
//                                            LOCALS, LOCALS)));
// (although replacing echo with "set prompt" appropriately could work Hmmmm.)
//
// Shared libraries and breakpoints
// ================================
// Shared libraries and breakpoints have a problem that has a reasonable solution.
// The problem is that gdb will not accept breakpoints in source that is in a
// shared library that has _not_ _yet_ been opened but will be opened via a
// dlopen.
//
// The solution is to get gdb to tell us when a shared library has been opened.
// This means that when the user sets a breakpoint, we flag this breakpoint as
// pending, try to set the breakpoint and if gdb says it succeeded then flag it
// as active. If gdb is not successful then we leave the breakpoint as pending.
//
// This is known as "lazy breakpoints"
//
// If the user has selected a file that is really outside the program and tried to
// set a breakpoint then this breakpoint will always be pending. I can't do
// anything about that, because it _might_ be in a shared library. If not they
// are either fools or just misguided...
//
// Now that the breakpoint is pending, we need gdb to tell us when a shared
// library has been loaded. We use "set stop-on 1". This breaks on _any_
// library event, and we just try to set the pending breakpoints. Once we're
// done, we then "continue"
//
// Now here's the problem with all this. If the user "step"s over code that
// contains a library dlopen then it'll just keep running, because we receive a
// break and hence end up doing a continue. In this situation, I do _not_
// do a continue but leave it stopped with the status line reflecting the
// stopped state. The frame stack is in the dl routine that caused the stop.
//
// There isn't any way around this, but I could allievate the problem somewhat
// by only doing a "set stop-on 1" when we have pending breakpoints.
//
// **************************************************************************

namespace GDBDebugger
{

// This is here so we can check for startup /shutdown problems
int debug_controllerExists = false;


GDBController::GDBController(TQDomDocument &projectDom)
        : DbgController(),
        currentFrame_(0),
        viewedThread_(-1),
        holdingZone_(),
        currentCmd_(0),
        tty_(0),
        badCore_(TQString()),
        state_(s_dbgNotStarted|s_appNotStarted),
        programHasExited_(false),
        dom(projectDom),
        config_breakOnLoadingLibrary_(true),
        config_forceBPSet_(true),
        config_displayStaticMembers_(false),
        config_asmDemangle_(true),
        config_dbgTerminal_(false),
        config_gdbPath_(),
        config_outputRadix_(10),
        state_reload_needed(false),
        stateReloadInProgress_(false)
{
    configure();
    cmdList_.setAutoDelete(true);

    Q_ASSERT(! debug_controllerExists);
    debug_controllerExists = true;
}

// **************************************************************************

// Deleting the controller involves shutting down gdb nicely.
// When were attached to a process, we must first detach so that the process
// can continue running as it was before being attached. gdb is quite slow to
// detach from a process, so we must process events within here to get a "clean"
// shutdown.
GDBController::~GDBController()
{
    debug_controllerExists = false;
}

// **************************************************************************

void GDBController::configure()
{
    // A a configure.gdb script will prevent these from uncontrolled growth...
    config_configGdbScript_       = DomUtil::readEntry(dom, "/kdevdebugger/general/configGdbScript").latin1();
    config_runShellScript_        = DomUtil::readEntry(dom, "/kdevdebugger/general/runShellScript").latin1();
    config_runGdbScript_          = DomUtil::readEntry(dom, "/kdevdebugger/general/runGdbScript").latin1();

//  add macros for reading TQStrings? or in configGdbScript?
    config_forceBPSet_            = DomUtil::readBoolEntry(dom, "/kdevdebugger/general/allowforcedbpset", true);
    config_dbgTerminal_           = DomUtil::readBoolEntry(dom, "/kdevdebugger/general/separatetty", false);
    config_gdbPath_               = DomUtil::readEntry(dom, "/kdevdebugger/general/gdbpath");

    bool old_displayStatic        = config_displayStaticMembers_;
    config_displayStaticMembers_  = DomUtil::readBoolEntry(dom, "/kdevdebugger/display/staticmembers",false);

    bool old_asmDemangle  = config_asmDemangle_;
    config_asmDemangle_   = DomUtil::readBoolEntry(dom, "/kdevdebugger/display/demanglenames",true);

    bool old_breakOnLoadingLibrary_ = config_breakOnLoadingLibrary_;
    config_breakOnLoadingLibrary_ = DomUtil::readBoolEntry(dom, "/kdevdebugger/general/breakonloadinglibs",true);

    // FIXME: should move this into debugger part or variable widget.
    int old_outputRadix  = config_outputRadix_;
#if 0
    config_outputRadix_   = DomUtil::readIntEntry(dom, "/kdevdebugger/display/outputradix", 10);
    varTree_->setRadix(config_outputRadix_);
#endif


    if (( old_displayStatic             != config_displayStaticMembers_   ||
            old_asmDemangle             != config_asmDemangle_            ||
            old_breakOnLoadingLibrary_  != config_breakOnLoadingLibrary_  ||
            old_outputRadix             != config_outputRadix_)           &&
            dbgProcess_)
    {
        bool restart = false;
        if (stateIsOn(s_dbgBusy))
        {
            pauseApp();
            restart = true;
        }

        if (old_displayStatic != config_displayStaticMembers_)
        {
            if (config_displayStaticMembers_)
                queueCmd(new GDBCommand("set print static-members on"));
            else
                queueCmd(new GDBCommand("set print static-members off"));
        }
        if (old_asmDemangle != config_asmDemangle_)
        {
            if (config_asmDemangle_)
                queueCmd(new GDBCommand("set print asm-demangle on"));
            else
                queueCmd(new GDBCommand("set print asm-demangle off"));
        }

        // Disabled for MI port.
        if (old_outputRadix != config_outputRadix_)
        {
            queueCmd(new GDBCommand(TQCString().sprintf("set output-radix %d",
                                config_outputRadix_)));

            // FIXME: should do this in variable widget anyway.
            // After changing output radix, need to refresh variables view.
            raiseEvent(program_state_changed);

        }

        if (!config_configGdbScript_.isEmpty())
          queueCmd(new GDBCommand("source " + config_configGdbScript_));

        if (restart)
            queueCmd(new GDBCommand("-exec-continue"));
    }
}

// **************************************************************************

void GDBController::addCommand(GDBCommand* cmd)
{
    queueCmd(cmd);
}

void GDBController::addCommand(const TQString& str)
{
    queueCmd(new GDBCommand(str));
}

void GDBController::addCommandToFront(GDBCommand* cmd)
{
    queueCmd(cmd, queue_at_front);
}

void GDBController::addCommandBeforeRun(GDBCommand* cmd)
{
    queueCmd(cmd, queue_before_run);
}

int  GDBController::currentThread() const
{
    return viewedThread_;
}

int GDBController::currentFrame() const
{
    return currentFrame_;
}

// Fairly obvious that we'll add whatever command you give me to a queue
// If you tell me to, I'll put it at the head of the queue so it'll run ASAP
// Not quite so obvious though is that if we are going to run again. then any
// information requests become redundent and must be removed.
// We also try and run whatever command happens to be at the head of
// the queue.
void GDBController::queueCmd(GDBCommand *cmd, enum queue_where queue_where)
{
    if (stateIsOn(s_dbgNotStarted))
    {
        KMessageBox::information(
            0,
            i18n("<b>Gdb command sent when debugger is not running</b><br>"
            "The command was:<br> %1").arg(cmd->initialString()),
            i18n("Internal error"), "gdb_error");
        return;
    }

    if (stateReloadInProgress_)
        stateReloadingCommands_.insert(cmd);

    if (queue_where == queue_at_front)
        cmdList_.insert(0, cmd);
    else if (queue_where == queue_at_end)
        cmdList_.append (cmd);
    else if (queue_where == queue_before_run)
    {
        unsigned i;
        for (i = 0; i < cmdList_.count(); ++i)
            if (cmdList_.at(i)->isRun())
                break;

        cmdList_.insert(i, cmd);
    }

    kdDebug(9012) << "QUEUE: " << cmd->initialString()
                  << (stateReloadInProgress_ ? " (state reloading)\n" : "\n");

    setStateOn(s_dbgBusy);
    emit dbgStatus("", state_);
    raiseEvent(debugger_busy);

    executeCmd();
}

// **************************************************************************

// If the appliction can accept a command and we've got one waiting
// then send it.
// Commands can be just request for data (or change gdbs state in someway)
// or they can be "run" commands. If a command is sent to gdb our internal
// state will get updated.
void GDBController::executeCmd()
{
    if (stateIsOn(s_dbgNotStarted|s_waitForWrite|s_shuttingDown) || !dbgProcess_)
    {
        return;
    }

    if (!currentCmd_)
    {
        if (cmdList_.isEmpty())
            return;

        currentCmd_ = cmdList_.take(0);
    }
    else
    {
        return;
    }

    TQString commandText = currentCmd_->cmdToSend();
    bool bad_command = false;
    TQString message;

    unsigned length = commandText.length();
    // No i18n for message since it's mainly for debugging.
    if (length == 0)
    {
        // The command might decide it's no longer necessary to send
        // it.
        if (SentinelCommand* sc = dynamic_cast<SentinelCommand*>(currentCmd_))
        {
            kdDebug(9012) << "SEND: sentinel command, not sending\n";
            sc->invokeHandler();
        }
        else
        {
            kdDebug(9012) << "SEND: command " << currentCmd_->initialString()
                          << " changed its mind, not sending\n";
        }

        destroyCurrentCommand();
        executeCmd();
        commandDone();
        return;
    }
    else
    {
        if (commandText[length-1] != '\n')
        {
            bad_command = true;
            message = "Debugger command does not end with newline";
        }
    }
    if (bad_command)
    {
        KMessageBox::information(0, i18n("<b>Invalid debugger command</b><br>")
                           + message,
                           i18n("Invalid debugger command"), "gdb_error");
        return;
    }

    kdDebug(9012) << "SEND: " << commandText;

    dbgProcess_->writeStdin(commandText.local8Bit(),
                            commandText.length());
    setStateOn(s_waitForWrite);

    TQString prettyCmd = currentCmd_->cmdToSend();
    prettyCmd.replace( TQRegExp("set prompt \032.\n"), "" );
    prettyCmd = "(gdb) " + prettyCmd;

    if (currentCmd_->isUserCommand())
        emit gdbUserCommandStdout( prettyCmd.latin1() );
    else
        emit gdbInternalCommandStdout( prettyCmd.latin1() );

    emit dbgStatus ("", state_);
}

// **************************************************************************

void GDBController::destroyCmds()
{
    if (currentCmd_)
    {
        destroyCurrentCommand();
    }

    while (!cmdList_.isEmpty())
        delete cmdList_.take(0);
}

// Pausing an app removes any pending run commands so that the app doesn't
// start again. If we want to be silent then we remove any pending info
// commands as well.
void GDBController::pauseApp()
{
    setStateOn(s_explicitBreakInto);

    /* FIXME: need to decide if we really
       need this, and the consistenly mark
       info commands as such.
    int i = cmdList_.count();
    while (i)
    {
        i--;
        DbgCommand *cmd = cmdList_.at(i);
        if (cmd->isAnInfoCmd())
            delete cmdList_.take(i);
    }
    */

    if (dbgProcess_)
        dbgProcess_->kill(SIGINT);
}

void GDBController::actOnProgramPauseMI(const GDBMI::ResultRecord& r)
{
    // Is this stop on shared library load? Gdb smartly does not
    // print any 'reason' field in this case.
    bool shared_library_load = false;
    if (currentCmd_)
    {
        const TQValueVector<TQString>& lines = currentCmd_->allStreamOutput();
        for(unsigned int i = 0; i < lines.count(); ++i)
        {
            if (lines[i].startsWith("Stopped due to shared library event"))
            {
                shared_library_load = true;
                break;
            }
        }
    }

    if (shared_library_load)
    {
        raiseEvent(shared_library_loaded);
        queueCmd(new GDBCommand("-exec-continue"));
        return;
    }

    if (!r.hasField("reason"))
    {
        // FIXME: throw an exception, and add the gdb reply in the
        // caller. Show message box in the caller, not here.
        // FIXME: remove this 'bla-bla-bla'.
        KMessageBox::detailedSorry(
            0,
            i18n("<b>Invalid gdb reply</b>"
                 "<p>The 'stopped' packet does not include the 'reason' field'."),
            i18n("The gdb reply is: bla-bla-bla"),
            i18n("Invalid gdb reply"));
        return;
    }

    TQString reason = r["reason"].literal();
    if (reason == "exited-normally" || reason == "exited")
    {
        programNoApp("Exited normally", false);
        programHasExited_ = true;
        state_reload_needed = false;
        return;
    }

    if (reason == "exited-signalled")
    {
        programNoApp(i18n("Exited on signal %1")
                     .arg(r["signal-name"].literal()), false);
        // FIXME: figure out why this variable is needed.
        programHasExited_ = true;
        state_reload_needed = false;
        return;
    }

    if (reason == "watchpoint-scope")
    {
        TQString number = r["wpnum"].literal();

        // FIXME: shuld remove this watchpoint
        // But first, we should consider if removing all
        // watchpoinst on program exit is the right thing to
        // do.

        queueCmd(new GDBCommand("-exec-continue"));

        state_reload_needed = false;
        return;
    }

    if (reason == "signal-received")
    {
        TQString name = r["signal-name"].literal();
        TQString user_name = r["signal-meaning"].literal();

        // SIGINT is a "break into running program".
        // We do this when the user set/mod/clears a breakpoint but the
        // application is running.
        // And the user does this to stop the program also.
        bool suppress_reporting = false;
        if (name == "SIGINT" && stateIsOn(s_explicitBreakInto))
        {
            suppress_reporting = true;
            // TODO: check that we do something reasonable on
            // implicit break into program (for setting breakpoints,
            // or whatever).

            setStateOff(s_explicitBreakInto);
            emit dbgStatus("Application interrupted", state_);
            // Will show the source line in the code
            // handling non-special stop kinds, below.
        }

        if (!suppress_reporting)
        {
            // Whenever we have a signal raised then tell the user, but don't
            // end the program as we want to allow the user to look at why the
            // program has a signal that's caused the prog to stop.
            // Continuing from SIG FPE/SEGV will cause a "Cannot ..." and
            // that'll end the program.
            KMessageBox::information(0,
                                     i18n("Program received signal %1 (%2)")
                                     .arg(name).arg(user_name),
                                     i18n("Received signal"));
        }
    }

    if (reason == "breakpoint-hit")
    {
        int id = r["bkptno"].literal().toInt();
        emit breakpointHit(id);
    }


}


void GDBController::reloadProgramState()
{
    const GDBMI::ResultRecord& r = *last_stop_result;

    // In gdb 6.3, the *stopped reply does not include full
    // name of the source file. Need to send extra command.
    // Don't send it unless there was 'line' field in last *stopped response.
    // The command has a bug that makes it always returns some file/line,
    // even if we're not in one.
    //
    // FIXME: For gdb 6.4, should not send extra commands.
    // That's for later, so that I verify that this three-command
    // approach works fine.
    if (r.hasField("frame") && r["frame"].hasField("line"))
        queueCmd(new GDBCommand(
                     "-file-list-exec-source-file",
                     this,
                     &GDBController::handleMiFileListExecSourceFile));
    else
    {
        maybeAnnounceWatchpointHit();
    }

    emit dbgStatus ("", state_);

    // We're always at frame zero when the program stops
    // and we must reset the active flag
    if (r.hasField("thread-id"))
        viewedThread_ = r["thread-id"].literal().toInt();
    else
        viewedThread_ = -1;
    currentFrame_ = 0;

    raiseEvent(program_state_changed);
    state_reload_needed = false;
}


// **************************************************************************

// There is no app anymore. This can be caused by program exiting
// an invalid program specified or ...
// gdb is still running though, but only the run command (may) make sense
// all other commands are disabled.
void GDBController::programNoApp(const TQString &msg, bool msgBox)
{
    setState(s_appNotStarted|s_programExited|(state_&s_shuttingDown));

    destroyCmds();

    // We're always at frame zero when the program stops
    // and we must reset the active flag
    viewedThread_ = -1;
    currentFrame_ = 0;

    // The application has existed, but it's possible that
    // some of application output is still in the pipe. We use
    // different pipes to communicate with gdb and to get application
    // output, so "exited" message from gdb might have arrived before
    // last application output. Get this last bit.

    // Note: this method can be called when we open an invalid
    // core file. In that case, tty_ won't be set.
    if (tty_)
        tty_->readRemaining();

    // Tty is no longer usable, delete it. Without this, TQSocketNotifier
    // will continiously bomd STTY with signals, so we need to either disable
    // TQSocketNotifier, or delete STTY. The latter is simpler, since we can't
    // reuse it for future debug sessions anyway.

    delete tty_;
    tty_ = 0;

    raiseEvent(program_exited);

    if (msgBox)
        KMessageBox::information(0, i18n("gdb message:\n")+msg,"Warning", "gdb_error");

    emit dbgStatus (msg, state_);
    /* Also show message in gdb window, so that users who
       prefer to look at gdb window know what's up.  */
    emit gdbUserCommandStdout(msg.ascii());
}

void GDBController::parseCliLine(const TQString& line)
{
    if (line.startsWith("The program no longer exists")
        || line.startsWith("Program exited")
        || line.startsWith("Program terminated"))
    {
        programNoApp(line, false);
        return;
    }

#if 0
    if (strncmp(buf, "No symbol", 9) == 0 ||                    // watch point failed
            strncmp(buf, "Single", 6) == 0 ||                   // Single stepping
            strncmp(buf, "No source file named", 20) == 0      ||   // breakpoint not set
            strncmp(buf, "[Switching to Thread", 20) == 0      ||    //
            strncmp(buf, "[Thread debugging using", 23) == 0   ||
            strncmp(buf, "Current language:", 17) == 0         ||
            strncmp(buf, "Error while mapping shared library sections:", 44) == 0  ||
            strncmp(buf, "Error while reading shared library symbols:", 43) == 0 ||
            *buf == ':' )
    {
        // We don't change state, because this falls out when a run command
        // starts rather than when a run command stops.
        // Or.... it falls out with other messages that _are_ handled.
        return;
    }
#endif

#if 0

    /// @todo - Only do this at start up
    if (
        strstr(buf, "not in executable format:")                ||
        strstr(buf, "No such file or directory.")               ||      // does this fall out?
        strstr(buf, i18n("No such file or directory.").local8Bit())||   // from system via gdb
        strstr(buf, "is not a core dump:")                      ||
        strncmp(buf, "ptrace: No such process.", 24)==0         ||
        strncmp(buf, "ptrace: Operation not permitted.", 32)==0 ||
        strncmp(buf, "No executable file specified.", 29)==0)
    {
        programNoApp(TQString(buf), true);
        kdDebug(9012) << "Bad file <"  << buf << ">" << endl;
        return;
    }
#endif
}

void GDBController::handleMiFileListExecSourceFile(const GDBMI::ResultRecord& r)
{
    if (r.reason != "done")
    {
        return;

        // FIXME: throw an exception here. Move reporting
        // to the caller, who knows the gdb output.
#if 0
        KMessageBox::information(
            0,
            i18n("Invalid gdb reply\n"
                 "Command was: %1\n"
                 "Response is: %2\n"
                 "Invalid response kind: \"%3\"")
            .arg(currentCmd_->rawDbgCommand())
            .arg(buf)
            .arg(r.reason),
            i18n("Invalid gdb reply"), "gdb_error");
#endif
    }

    TQString fullname = "";
    if (r.hasField("fullname"))
        fullname = r["fullname"].literal();

    showStepInSource(fullname,
                     r["line"].literal().toInt(),
                     (*last_stop_result)["frame"]["addr"].literal());

    /* Watchpoint hit is announced only after we've highlighted
       the current line. */
    maybeAnnounceWatchpointHit();

    last_stop_result.reset();
}

void GDBController::maybeAnnounceWatchpointHit()
{
    /* For some cases, for example catchpoints,
       gdb does not report any reason at all. */
    if ((*last_stop_result).hasField("reason"))
    {
        TQString last_stop_reason = (*last_stop_result)["reason"].literal();

        if (last_stop_reason == "watchpoint-trigger")
        {
            emit watchpointHit((*last_stop_result)["wpt"]["number"]
                               .literal().toInt(),
                               (*last_stop_result)["value"]["old"].literal(),
                               (*last_stop_result)["value"]["new"].literal());
        }
        else if (last_stop_reason == "read-watchpoint-trigger")
        {
            emit dbgStatus ("Read watchpoint triggered", state_);
        }
    }
}

void GDBController::handleMiFrameSwitch(const GDBMI::ResultRecord& r)
{
    raiseEvent(thread_or_frame_changed);

    const GDBMI::Value& frame = r["frame"];

    TQString file;
    if (frame.hasField("fullname"))
        file = frame["fullname"].literal();
    else if (frame.hasField("file"))
        file = frame["file"].literal();

    int line = -1;
    if (frame.hasField("line"))
        line = frame["line"].literal().toInt();

    showStepInSource(file,
                     line,
                     frame["addr"].literal());
}

// **************************************************************************
//                                SLOTS
//                                *****
// For most of these slots data can only be sent to gdb when it
// isn't busy and it is running.

// **************************************************************************

bool GDBController::start(const TQString& shell, const DomUtil::PairList& run_envvars, const TQString& run_directory, const TQString &application, const TQString& run_arguments)
{
    kdDebug(9012) << "Starting debugger controller\n";
    badCore_ = TQString();

    Q_ASSERT (!dbgProcess_ && !tty_);

    dbgProcess_ = new TDEProcess;

    connect( dbgProcess_, TQT_SIGNAL(receivedStdout(TDEProcess *, char *, int)),
             this,        TQT_SLOT(slotDbgStdout(TDEProcess *, char *, int)) );

    connect( dbgProcess_, TQT_SIGNAL(receivedStderr(TDEProcess *, char *, int)),
             this,        TQT_SLOT(slotDbgStderr(TDEProcess *, char *, int)) );

    connect( dbgProcess_, TQT_SIGNAL(wroteStdin(TDEProcess *)),
             this,        TQT_SLOT(slotDbgWroteStdin(TDEProcess *)) );

    connect( dbgProcess_, TQT_SIGNAL(processExited(TDEProcess*)),
             this,        TQT_SLOT(slotDbgProcessExited(TDEProcess*)) );

    application_ = application;

    TQString gdb = "gdb";
    // Prepend path to gdb, if needed. Using TQDir,
    // path can either end with slash, or not.
    if (!config_gdbPath_.isEmpty())
    {
        gdb = config_gdbPath_;
    }

    if (!shell.isEmpty())
    {
        *dbgProcess_ << "/bin/sh" << "-c" << shell + " " + gdb +
                      + " " + application + " --interpreter=mi2 -quiet";
        emit gdbUserCommandStdout(
            TQString( "/bin/sh -c " + shell + " " + gdb
                     + " " + application
                     + " --interpreter=mi2 -quiet\n" ).latin1());
    }
    else
    {
        *dbgProcess_ << gdb << application
                     << "-interpreter=mi2" << "-quiet";
        emit gdbUserCommandStdout(
            TQString( gdb + " " + application +
                     " --interpreter=mi2 -quiet\n" ).latin1());
    }

    if (!dbgProcess_->start( TDEProcess::NotifyOnExit,
                             TDEProcess::Communication(TDEProcess::All)))
    {
        KMessageBox::information(
            0,
            i18n("<b>Could not start debugger.</b>"
                 "<p>Could not run '%1'. "
                 "Make sure that the path name is specified correctly."
                ).arg(dbgProcess_->args()[0].data()),
            i18n("Could not start debugger"), "gdb_error");

        return false;
    }

    setStateOff(s_dbgNotStarted);
    emit dbgStatus ("", state_);

    saw_gdb_prompt_ = false;

    // Initialise gdb. At this stage gdb is sitting wondering what to do,
    // and to whom. Organise a few things, then set up the tty for the application,
    // and the application itself

    // The following two are not necessary in MI, and the first one
    // just breaks MI completely.
    // queueCmd(new GDBCommand("set edit off", NOTRUNCMD, NOTINFOCMD, 0));
    // queueCmd(new GDBCommand("set confirm off", NOTRUNCMD, NOTINFOCMD));

    if (config_displayStaticMembers_)
        queueCmd(new GDBCommand("set print static-members on"));
    else
        queueCmd(new GDBCommand("set print static-members off"));

    // This makes gdb pump a variable out on one line.
    queueCmd(new GDBCommand("set width 0"));
    queueCmd(new GDBCommand("set height 0"));

    queueCmd(new GDBCommand("handle SIG32 pass nostop noprint"));
    queueCmd(new GDBCommand("handle SIG41 pass nostop noprint"));
    queueCmd(new GDBCommand("handle SIG42 pass nostop noprint"));
    queueCmd(new GDBCommand("handle SIG43 pass nostop noprint"));

    // Print some nicer names in disassembly output. Although for an assembler
    // person this may actually be wrong and the mangled name could be better.
    if (config_asmDemangle_)
        queueCmd(new GDBCommand("set print asm-demangle on"));
    else
        queueCmd(new GDBCommand("set print asm-demangle off"));

    // make sure output radix is always set to users view.
    queueCmd(new GDBCommand(TQCString().sprintf("set output-radix %d",  config_outputRadix_)));

    // Change the "Working directory" to the correct one
    TQCString tmp( "cd " + TQFile::encodeName( run_directory ));
    queueCmd(new GDBCommand(tmp));

    // Set the run arguments
    if (!run_arguments.isEmpty())
        queueCmd(
            new GDBCommand(TQCString("set args ") + run_arguments.local8Bit()));

    // Get the run environment variables pairs into the environstr string
    // in the form of: "ENV_VARIABLE=ENV_VALUE" and send to gdb using the
    // "set enviroment" command
    // Note that we quote the variable value due to the possibility of
    // embedded spaces
    TQString environstr;
    DomUtil::PairList::ConstIterator it;
    for (it = run_envvars.begin(); it != run_envvars.end(); ++it)
    {
        environstr = "set environment ";
        environstr += (*it).first;
        environstr += "=";
        environstr += (*it).second;
        queueCmd(new GDBCommand(environstr.latin1()));
    }

    queueCmd(new GDBCommand(
                 "-list-features", this,
                 &GDBController::handleListFeatures, true /* handles error */));

 
    queueCmd(new SentinelCommand(this, &GDBController::startDone));

    // Now gdb has been started and the application has been loaded,
    // BUT the app hasn't been started yet! A run command is about to be issued
    // by whoever is controlling us. Or we might be asked to load a core, or
    // attach to a running process.

    return true;
}

void GDBController::startDone()
{
   // Needed so that breakpoint widget has a chance to insert breakpoints.
    // FIXME: a bit hacky, as we're really not ready for new commands.
    setStateOn(s_dbgBusy);
    raiseEvent(debugger_ready);
    raiseEvent(connected_to_program);
}

void GDBController::handleListFeatures(const GDBMI::ResultRecord& r)
{
    mi_pending_breakpoints_ = false;
    if (r.reason == "done")
    {
        const GDBMI::Value& features = r["features"];
        for (unsigned i = 0; i < features.size(); ++i)
            if (features[i].literal() == "pending-breakpoints")
            {
                mi_pending_breakpoints_ = true;
            }
    }

    if (!mi_pending_breakpoints_)
    {
        // This version of GDB does not support pending breakpoints in MI,
        // so use a workaround.
        // The below command makes GDB notify us about shared library
        // events, and on each stop we'll try to set breakpoint again.
        addCommandToFront(new GDBCommand("set stop-on-solib-events 1"));
    }
}
// **************************************************************************

void GDBController::slotStopDebugger()
{
    kdDebug(9012) << "GDBController::slotStopDebugger() called" << endl;
    if (stateIsOn(s_shuttingDown) || !dbgProcess_)
        return;

    setStateOn(s_shuttingDown);
    kdDebug(9012) << "GDBController::slotStopDebugger() executing" << endl;

    TQTime start;
    TQTime now;

    // Get gdb's attention if it's busy. We need gdb to be at the
    // command line so we can stop it.
    if (stateIsOn(s_dbgBusy))
    {
        kdDebug(9012) << "gdb busy on shutdown - stopping gdb (SIGINT)" << endl;
        dbgProcess_->kill(SIGINT);
        start = TQTime::currentTime();
        while (-1)
        {
            kapp->eventLoop()->processEvents( TQEventLoop::ExcludeUserInput, 20 );
            now = TQTime::currentTime();
            if (!stateIsOn(s_dbgBusy) || start.msecsTo( now ) > 2000)
                break;
        }
    }

    // If the app is attached then we release it here. This doesn't stop
    // the app running.
    if (stateIsOn(s_attached))
    {
        const char *detach="detach\n";
        if (!dbgProcess_->writeStdin(detach, strlen(detach)))
            kdDebug(9012) << "failed to write 'detach' to gdb" << endl;
        emit gdbUserCommandStdout("(gdb) detach\n");
        start = TQTime::currentTime();
        while (-1)
        {
             kapp->eventLoop()->processEvents( TQEventLoop::ExcludeUserInput, 20 );
             now = TQTime::currentTime();
             if (!stateIsOn(s_attached) || start.msecsTo( now ) > 2000)
                 break;
        }
    }

    // Now try to stop gdb running.
    const char *quit="quit\n";
    if (!dbgProcess_->writeStdin(quit, strlen(quit)))
        kdDebug(9012) << "failed to write 'quit' to gdb" << endl;

    emit gdbUserCommandStdout("(gdb) quit");
    start = TQTime::currentTime();
    while (-1)
    {
         kapp->eventLoop()->processEvents( TQEventLoop::ExcludeUserInput, 20 );
         now = TQTime::currentTime();
         if (stateIsOn(s_programExited) || start.msecsTo( now ) > 2000)
             break;
    }

    // We cannot wait forever.
    if (!stateIsOn(s_programExited))
    {
        kdDebug(9012) << "gdb not shutdown - killing" << endl;
        dbgProcess_->kill(SIGKILL);
    }

    destroyCmds();
    delete dbgProcess_;    dbgProcess_ = 0;
    delete tty_;           tty_ = 0;

    // The gdb output buffer might contain start marker of some
    // previously issued command that crashed gdb (so there's no end marker)
    // If we don't clear this, then after restart, we'll be trying to search
    // for the end marker of the command issued in previous gdb session,
    // and never succeed.
    gdbOutput_ = "";

    setState(s_dbgNotStarted | s_appNotStarted);
    emit dbgStatus (i18n("Debugger stopped"), state_);

    raiseEvent(debugger_exited);
}

// **************************************************************************

void GDBController::slotCoreFile(const TQString &coreFile)
{
    setStateOff(s_programExited|s_appNotStarted);
    setStateOn(s_core);

    queueCmd(new GDBCommand(TQCString("core ") + coreFile.latin1()));

    raiseEvent(connected_to_program);
    raiseEvent(program_state_changed);
}

// **************************************************************************

void GDBController::slotAttachTo(int pid)
{
    setStateOff(s_appNotStarted|s_programExited);
    setStateOn(s_attached);

    // Currently, we always start debugger with a name of binary,
    // we might be connecting to a different binary completely,
    // so cancel all symbol tables gdb has.
    // We can't omit application name from gdb invocation
    // because for libtool binaries, we have no way to guess
    // real binary name.
    queueCmd(new GDBCommand(TQString("file")));

    // The MI interface does not implements -target-attach yet,
    // and we don't recognize whatever gibberish 'attach' pours out, so...
    queueCmd(new GDBCommand(
        TQCString().sprintf("attach %d", pid)));

    raiseEvent(connected_to_program);

    // ...emit a separate MI command to step one instruction more. We'll
    // notice the '*stopped' response from it and proceed as usual.
    queueCmd(new GDBCommand("-exec-step-instruction"));
}

// **************************************************************************

void GDBController::slotRun()
{
    if (stateIsOn(s_dbgNotStarted|s_shuttingDown))
        return;

    if (stateIsOn(s_appNotStarted)) {

        delete tty_;
        tty_ = new STTY(config_dbgTerminal_, Settings::terminalEmulatorName( *kapp->config() ));
        if (!config_dbgTerminal_)
        {
            connect( tty_, TQT_SIGNAL(OutOutput(const char*)), TQT_SIGNAL(ttyStdout(const char*)) );
            connect( tty_, TQT_SIGNAL(ErrOutput(const char*)), TQT_SIGNAL(ttyStderr(const char*)) );
        }

        TQString tty(tty_->getSlave());
        if (tty.isEmpty())
        {
            KMessageBox::information(0, i18n("GDB cannot use the tty* or pty* devices.\n"
                                       "Check the settings on /dev/tty* and /dev/pty*\n"
                                       "As root you may need to \"chmod ug+rw\" tty* and pty* devices "
                                       "and/or add the user to the tty group using "
                                       "\"usermod -G tty username\"."), "Warning",  "gdb_error");

            delete tty_;
            tty_ = 0;
            return;
        }

        queueCmd(new GDBCommand(TQCString("tty ")+tty.latin1()));

        if (!config_runShellScript_.isEmpty()) {
            // Special for remote debug...
            TQCString tty(tty_->getSlave().latin1());
            TQCString options = TQCString(">") + tty + TQCString("  2>&1 <") + tty;

            TDEProcess *proc = new TDEProcess;

            *proc << "sh" << "-c";
            *proc << config_runShellScript_ +
                " " + application_.latin1() + options;
            proc->start(TDEProcess::DontCare);
        }

        if (!config_runGdbScript_.isEmpty()) {// gdb script at run is requested

            // Race notice: wait for the remote gdbserver/executable
            // - but that might be an issue for this script to handle...

            // Future: the shell script should be able to pass info (like pid)
            // to the gdb script...

            queueCmd(new GDBCommand("source " + config_runGdbScript_));

            // Note: script could contain "run" or "continue"
        }
        else {

            TQFileInfo app(application_);

            if (!app.exists())
            {
                KMessageBox::error(
                    0,
                    i18n("<b>Application does not exist</b>"
                         "<p>The application you are trying to debug,<br>"
                         "    %1\n"
                         "<br>does not exist. Check that you have specified "
                         "the right application in the debugger configuration."
                        ).arg(app.fileName()),
                    i18n("Application does not exist"));

                // FIXME: after this, KDevelop will still show that debugger
                // is running, because DebuggerPart::slotStopDebugger won't be
                // called, and core()->running(this, false) won't be called too.
                slotStopDebugger();
                return;
            }
            if (!app.isExecutable())
            {
                KMessageBox::error(
                    0,
                    i18n("<b>Could not run application '%1'.</b>"
                         "<p>The application does not have the executable bit set. "
                         "Try rebuilding the project, or change permissions "
                         "manually."
                        ).arg(app.fileName()),
                    i18n("Could not run application"));
                slotStopDebugger();
            }
            else
            {
                GDBCommand *cmd = new GDBCommand("-exec-run");
                cmd->setRun(true);
                queueCmd(cmd);
            }
        }
    }
    else {
        removeStateReloadingCommands();

        queueCmd(new GDBCommand("-exec-continue"));
    }
    setStateOff(s_appNotStarted|s_programExited);
}


void GDBController::slotKill()
{
    if (stateIsOn(s_dbgNotStarted|s_shuttingDown))
        return;

    if (stateIsOn(s_dbgBusy))
    {
        pauseApp();
    }

    queueCmd(new GDBCommand("kill"));

    setStateOn(s_appNotStarted);
}

// **************************************************************************

void GDBController::slotRunUntil(const TQString &fileName, int lineNum)
{
    if (stateIsOn(s_dbgBusy|s_dbgNotStarted|s_shuttingDown))
        return;

    removeStateReloadingCommands();

    if (fileName.isEmpty())
        queueCmd(new GDBCommand(
                     TQCString().sprintf("-exec-until %d", lineNum)));
    else
        queueCmd(new GDBCommand(
                TQCString().
                sprintf("-exec-until %s:%d", fileName.latin1(), lineNum)));
}

// **************************************************************************

void GDBController::slotJumpTo(const TQString &fileName, int lineNum)
{
    if (stateIsOn(s_dbgBusy|s_dbgNotStarted|s_shuttingDown))
        return;

    if (!fileName.isEmpty()) {
        queueCmd(new GDBCommand(TQCString().sprintf("tbreak %s:%d", fileName.latin1(), lineNum)));
        queueCmd(new GDBCommand(TQCString().sprintf("jump %s:%d", fileName.latin1(), lineNum)));
    }
}

// **************************************************************************

void GDBController::slotStepInto()
{
    if (stateIsOn(s_dbgBusy|s_appNotStarted|s_shuttingDown))
        return;

    removeStateReloadingCommands();

    queueCmd(new GDBCommand("-exec-step"));
}

// **************************************************************************

void GDBController::slotStepIntoIns()
{
    if (stateIsOn(s_dbgBusy|s_appNotStarted|s_shuttingDown))
        return;

    removeStateReloadingCommands();

    queueCmd(new GDBCommand("-exec-step-instruction"));
}

// **************************************************************************

void GDBController::slotStepOver()
{
    if (stateIsOn(s_dbgBusy|s_appNotStarted|s_shuttingDown))
        return;

    removeStateReloadingCommands();

    queueCmd(new GDBCommand("-exec-next"));
}

// **************************************************************************

void GDBController::slotStepOverIns()
{
    if (stateIsOn(s_dbgBusy|s_appNotStarted|s_shuttingDown))
        return;

    removeStateReloadingCommands();

    queueCmd(new GDBCommand("-exec-next-instruction"));
}

// **************************************************************************

void GDBController::slotStepOutOff()
{
    if (stateIsOn(s_dbgBusy|s_appNotStarted|s_shuttingDown))
        return;

    removeStateReloadingCommands();

    queueCmd(new GDBCommand("-exec-finish"));
}

// **************************************************************************

// Only interrupt a running program.
void GDBController::slotBreakInto()
{
    pauseApp();
}

// **************************************************************************

void GDBController::selectFrame(int frameNo, int threadNo)
{
    // FIXME: this either should be removed completely, or
    // trigger an error message.
    if (stateIsOn(s_dbgBusy|s_dbgNotStarted|s_shuttingDown))
        return;

    if (threadNo != -1)
    {
        if (viewedThread_ != threadNo)
            queueCmd(new GDBCommand(
                         TQString("-thread-select %1").arg(threadNo).ascii()));
    }

    queueCmd(new GDBCommand(
                 TQString("-stack-select-frame %1").arg(frameNo).ascii()));

    // Will emit the 'thread_or_frame_changed' event.
    queueCmd(new GDBCommand("-stack-info-frame",
                            this, &GDBController::handleMiFrameSwitch));


    // FIXME: the above commands might not be the first in queue, and
    // previous commands might using values of 'viewedThread_' or
    // 'currentFrame_'. Ideally, should change the values only after
    // response from gdb.
    viewedThread_ = threadNo;
    currentFrame_ = frameNo;
}

// **************************************************************************

void GDBController::defaultErrorHandler(const GDBMI::ResultRecord& result)
{
    TQString msg = result["msg"].literal();

    if (msg.contains("No such process"))
    {
        setState(s_appNotStarted|s_programExited);
        emit dbgStatus (i18n("Process exited"), state_);
        raiseEvent(program_exited);
        return;
    }

    KMessageBox::information(
        0,
        i18n("<b>Debugger error</b>"
             "<p>Debugger reported the following error:"
             "<p><tt>") + result["msg"].literal(),
        i18n("Debugger error"), "gdb_error");

    // Error most likely means that some change made in GUI
    // was not communicated to the gdb, so GUI is now not
    // in sync with gdb. Resync it.
    //
    // Another approach is to make each widget reload it content
    // on errors from commands that it sent, but that's too complex.
    // Errors are supposed to happen rarely, so full reload on error
    // is not a big deal. Well, maybe except for memory view, but
    // it's no auto-reloaded anyway.
    //
    // Also, don't reload state on errors appeared during state
    // reloading!
    if (stateReloadingCommands_.count(currentCmd_) == 0)
        raiseEvent(program_state_changed);
}

void GDBController::processMICommandResponse(const GDBMI::ResultRecord& result)
{
    kdDebug(9012) << "MI stop reason " << result.reason << "\n";
    if (result.reason == "stopped")
    {
        actOnProgramPauseMI(result);
    }
    else if (result.reason == "done")
    {
        // At least in one case, for 'detach', debuger write
        // command directly, and 'currentCmd_' will be unset.
        // Checking for currentCmd_ is safer in any case.
        if (currentCmd_)
        {
            // Assume that if this command is part of state reloading,
            // then any further commands issued in command handler
            // are part of state reloading as well.
            if (stateReloadingCommands_.count(currentCmd_))
            {
                stateReloadInProgress_ = true;
            }
            currentCmd_->invokeHandler(result);
            stateReloadInProgress_ = false;
        }
    }
    else if (result.reason == "error")
    {
        // Some commands want to handle errors themself.
        if (currentCmd_ && currentCmd_->handlesError() &&
            currentCmd_->invokeHandler(result))
        {
            // Done, nothing more needed
        }
        else
        {
            defaultErrorHandler(result);
        }
    }
}

// Data from gdb gets processed here.
void GDBController::slotDbgStdout(TDEProcess *, char *buf, int buflen)
{
    static bool parsing = false;

    TQCString msg(buf, buflen+1);

    // Copy the data out of the TDEProcess buffer before it gets overwritten
    // Append to the back of the holding zone.
    holdingZone_ +=  TQCString(buf, buflen+1);

    // Already parsing? then get out quick.
    // VP, 2006-01-30. I'm not sure how this could happen, since
    // parsing of gdb reply should not ever execute TQt message loop. Except,
    // maybe, when we pop up a message box. But even in that case,
    // it's likely we won't return to slotDbgStdout again.
    if (parsing)
    {
        kdDebug(9012) << "Already parsing" << endl;
        return;
    }

    bool ready_for_next_command = false;

    int i;
    bool got_any_command = false;
    // For each gdb reply. In MI mode, each reply is one string.
    while((i = holdingZone_.find('\n')) != -1)
    {
        got_any_command = true;

        TQCString reply(holdingZone_.left(i));
        holdingZone_ = holdingZone_.mid(i+1);

        kdDebug(9012) << "REPLY: " << reply << "\n";

        FileSymbol file;
        file.contents = reply;

        std::auto_ptr<GDBMI::Record> r(mi_parser_.parse(&file));

        if (r.get() == 0)
        {
            // FIXME: Issue an error!
            kdDebug(9012) << "Invalid MI message: " << reply << "\n";
            ready_for_next_command = true;
            continue;
        }

        try {

            switch(r->kind)
            {
            case GDBMI::Record::Result: {

                GDBMI::ResultRecord& result = static_cast<GDBMI::ResultRecord&>(*r);

                if (result.reason != "running")
                {
                    kdDebug(9012) << "Command execution time "
                                  << commandExecutionTime.elapsed() << " ms.\n";
                }

                /* The currentCmd_ may be NULL here, because when detaching
                   from debugger, we directly write "detach" to gdb and
                   busy-wait for a reply.  Uisng the commands mechanism
                   won't work there, because command result are
                   communicated asynchronously.
                   This is will be fixed in KDevelop4.  */
                if (currentCmd_ && currentCmd_->isUserCommand())
                    emit gdbUserCommandStdout(reply);
                else
                    emit gdbInternalCommandStdout(reply + "\n");

                if (result.reason == "stopped")
                {
                    // Transfers ownership.
                    // Needed so that in
                    //   handleMiFileListExecSourceFile(GDBMI::ResultRecord& r);
                    // we can use the last stop reason.
                    last_stop_result.reset(static_cast<GDBMI::ResultRecord*>(r.get()));
                    r.release();
                    state_reload_needed = true;
                }
                else if (result.reason == "running")
                {
                    setStateOn(s_appRunning);
                    raiseEvent(program_running);
                }

                // All MI commands have just one response, except for
                // run-like command, which result in
                //
                //   ^running
                //
                // followed by
                //
                //   stopped.

                ready_for_next_command = (result.reason != "running");
                if (ready_for_next_command)
                {
                    // Need to do this before procesing response,
                    // so that when processing response we don't
                    // think that application is running.
                    setStateOff(s_appRunning);
                }

                processMICommandResponse(result);


                if (ready_for_next_command)
                {
                    destroyCurrentCommand();
                }


                break;
            }

            case GDBMI::Record::Stream: {

                GDBMI::StreamRecord& s = dynamic_cast<GDBMI::StreamRecord&>(*r);
                /* The way current code works is that we start gdb,
                   and immediately send commands to it without waiting for
                   a prompt.  As result, when we return back to the event
                   loop and read the first line from GDB, currentCmd_ is
                   already set.  But really, we want to output everything
                   that gdb prints prior to prompt -- it might be
                   output from user's .gdbinit that user cares about.  */
                if (!saw_gdb_prompt_ 
                    || !currentCmd_ || currentCmd_->isUserCommand())
                    emit gdbUserCommandStdout(s.message.ascii());
                else
                    emit gdbInternalCommandStdout(s.message.ascii());

                if (currentCmd_)
                    currentCmd_->newOutput(s.message);

                parseCliLine(s.message);

                static TQRegExp print_output("^\\$(\\d+) = ");
                if (print_output.search(s.message) != -1)
                {
                    kdDebug(9012) << "Found 'print' output: " << s.message << "\n";
                    print_command_result = s.message.ascii();
                }

                /* This is output from the program.  Route it to
                   the Application window.  */
                if (s.reason == '@')
                    emit ttyStderr(s.message.ascii());

                break;
            }


            case GDBMI::Record::Prompt:
                saw_gdb_prompt_ = true;
                break;
            }
        }
        catch(const std::exception& e)
        {
            KMessageBox::detailedSorry(
                0,
                i18n("<b>Internal debugger error</b>",
                     "<p>The debugger component encountered an internal error while "
                     "processing a reply from gdb. Please submit a bug report."),
                i18n("The exception is: %1\n"
                     "The MI response is: %2").arg(e.what()).arg(reply.data()),
                i18n("Internal debugger error"));

            destroyCurrentCommand();
            ready_for_next_command = true;
        }
    }

    // check the queue for any commands to send
    if (ready_for_next_command)
    {
        executeCmd();
    }

    if (got_any_command)
        kdDebug(9012) << "COMMANDS: " << cmdList_.count() << " in queue, "
                      << int(bool(currentCmd_)) << " executing\n";

    commandDone();
}

void GDBController::commandDone()
{
    bool no_more_commands = (cmdList_.isEmpty() && !currentCmd_);

    if (no_more_commands && state_reload_needed)
    {
        kdDebug(9012) << "Finishing program stop\n";
        // Set to false right now, so that if 'actOnProgramPauseMI_part2'
        // sends some commands, we won't call it again when handling replies
        // from that commands.
        state_reload_needed = false;
        reloadProgramState();
    }

    if (no_more_commands)
    {
        kdDebug(9012) << "No more commands\n";
        setStateOff(s_dbgBusy);
        emit dbgStatus("", state_);
        raiseEvent(debugger_ready);
    }
}

void GDBController::destroyCurrentCommand()
{
    stateReloadingCommands_.erase(currentCmd_);
    delete currentCmd_;
    currentCmd_ = 0;
}

void GDBController::removeStateReloadingCommands()
{
    int i = cmdList_.count();
    while (i)
    {
        i--;
        GDBCommand* cmd = cmdList_.at(i);
        if (stateReloadingCommands_.count(cmd))
        {
            kdDebug(9012) << "UNQUEUE: " << cmd->initialString() << "\n";
            delete cmdList_.take(i);
        }
    }

    if (stateReloadingCommands_.count(currentCmd_))
    {
        // This effectively prevents handler for this command
        // to be ever invoked.
        destroyCurrentCommand();
    }
}

void GDBController::raiseEvent(event_t e)
{
    if (e == program_exited || e == debugger_exited)
    {
        stateReloadInProgress_ = false;
    }

    if (e == program_state_changed)
    {
        stateReloadInProgress_ = true;
        kdDebug(9012) << "State reload in progress\n";
    }

    emit event(e);

    if (e == program_state_changed)
    {
        stateReloadInProgress_ = false;
    }
}


void GDBController::slotDbgStderr(TDEProcess *proc, char *buf, int buflen)
{
    // At the moment, just drop a message out and redirect
    kdDebug(9012) << "STDERR: " << TQString::fromLatin1(buf, buflen+1) << endl;
    slotDbgStdout(proc, buf, buflen);
}

// **************************************************************************

void GDBController::slotDbgWroteStdin(TDEProcess *)
{
    commandExecutionTime.start();

    setStateOff(s_waitForWrite);

    // FIXME: need to remove s_waitForWrite flag completely.
    executeCmd();
}

// **************************************************************************

void GDBController::slotDbgProcessExited(TDEProcess* process)
{
    Q_ASSERT(process == dbgProcess_);
    bool abnormal = !process->normalExit();
    delete dbgProcess_;
    dbgProcess_ = 0;
    delete tty_;
    tty_ = 0;

    if (abnormal)
        emit debuggerAbnormalExit();

    raiseEvent(debugger_exited);

    destroyCmds();
    setState(s_dbgNotStarted|s_appNotStarted|s_programExited);
    emit dbgStatus (i18n("Process exited"), state_);

    emit gdbUserCommandStdout("(gdb) Process exited\n");
}

// **************************************************************************

void GDBController::slotUserGDBCmd(const TQString& cmd)
{
    queueCmd(new UserCommand(cmd.latin1()));

    // User command can theoreticall modify absolutely everything,
    // so need to force a reload.

    // We can do it right now, and don't wait for user command to finish
    // since commands used to reload all view will be executed after
    // user command anyway.
    //if (!stateIsOn(s_appNotStarted) && !stateIsOn(s_programExited))
    //    raiseEvent(program_state_changed);
}

void GDBController::explainDebuggerStatus()
{
    TQString information("%1 commands in queue\n"
                        "%2 commands being processed by gdb\n"
                        "Debugger state: %3\n");
    information =
        information.arg(cmdList_.count()).arg(currentCmd_ ? 1 : 0)
        .arg(state_);

    if (currentCmd_)
    {
        TQString extra("Current command class: '%1'\n"
                      "Current command text: '%2'\n"
                      "Current command origianl text: '%3'\n");

        extra = extra.arg(
            typeid(*currentCmd_).name()).arg(currentCmd_->cmdToSend()).
            arg(currentCmd_->initialString());
        information += extra;
    }

    KMessageBox::information(0, information, "Debugger status");
}

bool GDBController::stateIsOn(int state)
{
    return state_ & state;
}

void GDBController::setStateOn(int stateOn)
{
    debugStateChange(state_, state_ | stateOn);
    state_ |= stateOn;
}

void GDBController::setStateOff(int stateOff)
{
    debugStateChange(state_, state_ & ~stateOff);
    state_ &= ~stateOff;
}

void GDBController::setState(int newState)
{
    debugStateChange(state_, newState);
    state_ = newState;
}

void GDBController::debugStateChange(int oldState, int newState)
{
    int delta = oldState ^ newState;
    if (delta)
    {
        TQString out = "STATE: ";
        for(unsigned i = 1; i < s_lastDbgState; i <<= 1)
        {
            if (delta & i)
            {
                if (i & newState)
                    out += "+";
                else
                    out += "-";

                bool found = false;
#define STATE_CHECK(name)\
    if (i == name) { out += #name; found = true; }
                STATE_CHECK(s_dbgNotStarted);
                STATE_CHECK(s_appNotStarted);
                STATE_CHECK(s_waitForWrite);
                STATE_CHECK(s_programExited);
                STATE_CHECK(s_viewBT);
                STATE_CHECK(s_viewBP);
                STATE_CHECK(s_attached);
                STATE_CHECK(s_core);
                STATE_CHECK(s_waitTimer);
                STATE_CHECK(s_shuttingDown);
                STATE_CHECK(s_explicitBreakInto);
                STATE_CHECK(s_dbgBusy);
                STATE_CHECK(s_appRunning);
#undef STATE_CHECK

                if (!found)
                    out += TQString::number(i);
                out += " ";

            }
        }
        kdDebug(9012) << out << "\n";
    }
}

int GDBController::qtVersion( ) const
{
  return DomUtil::readIntEntry( dom, "/kdevcppsupport/qt/version", 3 );
}

void GDBController::demandAttention() const
{
    if ( TQWidget * w = kapp->mainWidget() )
    {
        KWin::demandAttention( w->winId(), true );
    }
}

bool GDBController::miPendingBreakpoints() const
{
    return mi_pending_breakpoints_;
}

}

// **************************************************************************
// **************************************************************************
// **************************************************************************

#include "gdbcontroller.moc"