aboutsummaryrefslogtreecommitdiff
path: root/gdb/breakpoint.c
blob: 92aac3aca4ddb38966d15d702c2be82db9b18a34 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
3463
3464
3465
3466
3467
3468
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479
3480
3481
3482
3483
3484
3485
3486
3487
3488
3489
3490
3491
3492
3493
3494
3495
3496
3497
3498
3499
3500
3501
3502
3503
3504
3505
3506
3507
3508
3509
3510
3511
3512
3513
3514
3515
3516
3517
3518
3519
3520
3521
3522
3523
3524
3525
3526
3527
3528
3529
3530
3531
3532
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546
3547
3548
3549
3550
3551
3552
3553
3554
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566
3567
3568
3569
3570
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584
3585
3586
3587
3588
3589
3590
3591
3592
3593
3594
3595
3596
3597
3598
3599
3600
3601
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612
3613
3614
3615
3616
3617
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633
3634
3635
3636
3637
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648
3649
3650
3651
3652
3653
3654
3655
3656
3657
3658
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671
3672
3673
3674
3675
3676
3677
3678
3679
3680
3681
3682
3683
3684
3685
3686
3687
3688
3689
3690
3691
3692
3693
3694
3695
3696
3697
3698
3699
3700
3701
3702
3703
3704
3705
3706
3707
3708
3709
3710
3711
3712
3713
3714
3715
3716
3717
3718
3719
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730
3731
3732
3733
3734
3735
3736
3737
3738
3739
3740
3741
3742
3743
3744
3745
3746
3747
3748
3749
3750
3751
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762
3763
3764
3765
3766
3767
3768
3769
3770
3771
3772
3773
3774
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786
3787
3788
3789
3790
3791
3792
3793
3794
3795
3796
3797
3798
3799
3800
3801
3802
3803
3804
3805
3806
3807
3808
3809
3810
3811
3812
3813
3814
3815
3816
3817
3818
3819
3820
3821
3822
3823
3824
3825
3826
3827
3828
3829
3830
3831
3832
3833
3834
3835
3836
3837
3838
3839
3840
3841
3842
3843
3844
3845
3846
3847
3848
3849
3850
3851
3852
3853
3854
3855
3856
3857
3858
3859
3860
3861
3862
3863
3864
3865
3866
3867
3868
3869
3870
3871
3872
3873
3874
3875
3876
3877
3878
3879
3880
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5687
5688
5689
5690
5691
5692
5693
5694
5695
5696
5697
5698
5699
5700
5701
5702
5703
5704
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722
5723
5724
5725
5726
5727
5728
5729
5730
5731
5732
5733
5734
5735
5736
5737
5738
5739
5740
5741
5742
5743
5744
5745
5746
5747
5748
5749
5750
5751
5752
5753
5754
5755
5756
5757
5758
5759
5760
5761
5762
5763
5764
5765
5766
5767
5768
5769
5770
5771
5772
5773
5774
5775
5776
5777
5778
5779
5780
5781
5782
5783
5784
5785
5786
5787
5788
5789
5790
5791
5792
5793
5794
5795
5796
5797
5798
5799
5800
5801
5802
5803
5804
5805
5806
5807
5808
5809
5810
5811
5812
5813
5814
5815
5816
5817
5818
5819
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831
5832
5833
5834
5835
5836
5837
5838
5839
5840
5841
5842
5843
5844
5845
5846
5847
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
5868
5869
5870
5871
5872
5873
5874
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886
5887
5888
5889
5890
5891
5892
5893
5894
5895
5896
5897
5898
5899
5900
5901
5902
5903
5904
5905
5906
5907
5908
5909
5910
5911
5912
5913
5914
5915
5916
5917
5918
5919
5920
5921
5922
5923
5924
5925
5926
5927
5928
5929
5930
5931
5932
5933
5934
5935
5936
5937
5938
5939
5940
5941
5942
5943
5944
5945
5946
5947
5948
5949
5950
5951
5952
5953
5954
5955
5956
5957
5958
5959
5960
5961
5962
5963
5964
5965
5966
5967
5968
5969
5970
5971
5972
5973
5974
5975
5976
5977
5978
5979
5980
5981
5982
5983
5984
5985
5986
5987
5988
5989
5990
5991
5992
5993
5994
5995
5996
5997
5998
5999
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
6015
6016
6017
6018
6019
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
6049
6050
6051
6052
6053
6054
6055
6056
6057
6058
6059
6060
6061
6062
6063
6064
6065
6066
6067
6068
6069
6070
6071
6072
6073
6074
6075
6076
6077
6078
6079
6080
6081
6082
6083
6084
6085
6086
6087
6088
6089
6090
6091
6092
6093
6094
6095
6096
6097
6098
6099
6100
6101
6102
6103
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
6119
6120
6121
6122
6123
6124
6125
6126
6127
6128
6129
6130
6131
6132
6133
6134
6135
6136
6137
6138
6139
6140
6141
6142
6143
6144
6145
6146
6147
6148
6149
6150
6151
6152
6153
6154
6155
6156
6157
6158
6159
6160
6161
6162
6163
6164
6165
6166
6167
6168
6169
6170
6171
6172
6173
6174
6175
6176
6177
6178
6179
6180
6181
6182
6183
6184
6185
6186
6187
6188
6189
6190
6191
6192
6193
6194
6195
6196
6197
6198
6199
6200
6201
6202
6203
6204
6205
6206
6207
6208
6209
6210
6211
6212
6213
6214
6215
6216
6217
6218
6219
6220
6221
6222
6223
6224
6225
6226
6227
6228
6229
6230
6231
6232
6233
6234
6235
6236
6237
6238
6239
6240
6241
6242
6243
6244
6245
6246
6247
6248
6249
6250
6251
6252
6253
6254
6255
6256
6257
6258
6259
6260
6261
6262
6263
6264
6265
6266
6267
6268
6269
6270
6271
6272
6273
6274
6275
6276
6277
6278
6279
6280
6281
6282
6283
6284
6285
6286
6287
6288
6289
6290
6291
6292
6293
6294
6295
6296
6297
6298
6299
6300
6301
6302
6303
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6315
6316
6317
6318
6319
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
6334
6335
6336
6337
6338
6339
6340
6341
6342
6343
6344
6345
6346
6347
6348
6349
6350
6351
6352
6353
6354
6355
6356
6357
6358
6359
6360
6361
6362
6363
6364
6365
6366
6367
6368
6369
6370
6371
6372
6373
6374
6375
6376
6377
6378
6379
6380
6381
6382
6383
6384
6385
6386
6387
6388
6389
6390
6391
6392
6393
6394
6395
6396
6397
6398
6399
6400
6401
6402
6403
6404
6405
6406
6407
6408
6409
6410
6411
6412
6413
6414
6415
6416
6417
6418
6419
6420
6421
6422
6423
6424
6425
6426
6427
6428
6429
6430
6431
6432
6433
6434
6435
6436
6437
6438
6439
6440
6441
6442
6443
6444
6445
6446
6447
6448
6449
6450
6451
6452
6453
6454
6455
6456
6457
6458
6459
6460
6461
6462
6463
6464
6465
6466
6467
6468
6469
6470
6471
6472
6473
6474
6475
6476
6477
6478
6479
6480
6481
6482
6483
6484
6485
6486
6487
6488
6489
6490
6491
6492
6493
6494
6495
6496
6497
6498
6499
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
6532
6533
6534
6535
6536
6537
6538
6539
6540
6541
6542
6543
6544
6545
6546
6547
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
6575
6576
6577
6578
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6592
6593
6594
6595
6596
6597
6598
6599
6600
6601
6602
6603
6604
6605
6606
6607
6608
6609
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
6633
6634
6635
6636
6637
6638
6639
6640
6641
6642
6643
6644
6645
6646
6647
6648
6649
6650
6651
6652
6653
6654
6655
6656
6657
6658
6659
6660
6661
6662
6663
6664
6665
6666
6667
6668
6669
6670
6671
6672
6673
6674
6675
6676
6677
6678
6679
6680
6681
6682
6683
6684
6685
6686
6687
6688
6689
6690
6691
6692
6693
6694
6695
6696
6697
6698
6699
6700
6701
6702
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6719
6720
6721
6722
6723
6724
6725
6726
6727
6728
6729
6730
6731
6732
6733
6734
6735
6736
6737
6738
6739
6740
6741
6742
6743
6744
6745
6746
6747
6748
6749
6750
6751
6752
6753
6754
6755
6756
6757
6758
6759
6760
6761
6762
6763
6764
6765
6766
6767
6768
6769
6770
6771
6772
6773
6774
6775
6776
6777
6778
6779
6780
6781
6782
6783
6784
6785
6786
6787
6788
6789
6790
6791
6792
6793
6794
6795
6796
6797
6798
6799
6800
6801
6802
6803
6804
6805
6806
6807
6808
6809
6810
6811
6812
6813
6814
6815
6816
6817
6818
6819
6820
6821
6822
6823
6824
6825
6826
6827
6828
6829
6830
6831
6832
6833
6834
6835
6836
6837
6838
6839
6840
6841
6842
6843
6844
6845
6846
6847
6848
6849
6850
6851
6852
6853
6854
6855
6856
6857
6858
6859
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6872
6873
6874
6875
6876
6877
6878
6879
6880
6881
6882
6883
6884
6885
6886
6887
6888
6889
6890
6891
6892
6893
6894
6895
6896
6897
6898
6899
6900
6901
6902
6903
6904
6905
6906
6907
6908
6909
6910
6911
6912
6913
6914
6915
6916
6917
6918
6919
6920
6921
6922
6923
6924
6925
6926
6927
6928
6929
6930
6931
6932
6933
6934
6935
6936
6937
6938
6939
6940
6941
6942
6943
6944
6945
6946
6947
6948
6949
6950
6951
6952
6953
6954
6955
6956
6957
6958
6959
6960
6961
6962
6963
6964
6965
6966
6967
6968
6969
6970
6971
6972
6973
6974
6975
6976
6977
6978
6979
6980
6981
6982
6983
6984
6985
6986
6987
6988
6989
6990
6991
6992
6993
6994
6995
6996
6997
6998
6999
7000
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
7011
7012
7013
7014
7015
7016
7017
7018
7019
7020
7021
7022
7023
7024
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035
7036
7037
7038
7039
7040
7041
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
7063
7064
7065
7066
7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
7093
7094
7095
7096
7097
7098
7099
7100
7101
7102
7103
7104
7105
7106
7107
7108
7109
7110
7111
7112
7113
7114
7115
7116
7117
7118
7119
7120
7121
7122
7123
7124
7125
7126
7127
7128
7129
7130
7131
7132
7133
7134
7135
7136
7137
7138
7139
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
7173
7174
7175
7176
7177
7178
7179
7180
7181
7182
7183
7184
7185
7186
7187
7188
7189
7190
7191
7192
7193
7194
7195
7196
7197
7198
7199
7200
7201
7202
7203
7204
7205
7206
7207
7208
7209
7210
7211
7212
7213
7214
7215
7216
7217
7218
7219
7220
7221
7222
7223
7224
7225
7226
7227
7228
7229
7230
7231
7232
7233
7234
7235
7236
7237
7238
7239
7240
7241
7242
7243
7244
7245
7246
7247
7248
7249
7250
7251
7252
7253
7254
7255
7256
7257
7258
7259
7260
7261
7262
7263
7264
7265
7266
7267
7268
7269
7270
7271
7272
7273
7274
7275
7276
7277
7278
7279
7280
7281
7282
7283
7284
7285
7286
7287
7288
7289
7290
7291
7292
7293
7294
7295
7296
7297
7298
7299
7300
7301
7302
7303
7304
7305
7306
7307
7308
7309
7310
7311
7312
7313
7314
7315
7316
7317
7318
7319
7320
7321
7322
7323
7324
7325
7326
7327
7328
7329
7330
7331
7332
7333
7334
7335
7336
7337
7338
7339
7340
7341
7342
7343
7344
7345
7346
7347
7348
7349
7350
7351
7352
7353
7354
7355
7356
7357
7358
7359
7360
7361
7362
7363
7364
7365
7366
7367
7368
7369
7370
7371
7372
7373
7374
7375
7376
7377
7378
7379
7380
7381
7382
7383
7384
7385
7386
7387
7388
7389
7390
7391
7392
7393
7394
7395
7396
7397
7398
7399
7400
7401
7402
7403
7404
7405
7406
7407
7408
7409
7410
7411
7412
7413
7414
7415
7416
7417
7418
7419
7420
7421
7422
7423
7424
7425
7426
7427
7428
7429
7430
7431
7432
7433
7434
7435
7436
7437
7438
7439
7440
7441
7442
7443
7444
7445
7446
7447
7448
7449
7450
7451
7452
7453
7454
7455
7456
7457
7458
7459
7460
7461
7462
7463
7464
7465
7466
7467
7468
7469
7470
7471
7472
7473
7474
7475
7476
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
7505
7506
7507
7508
7509
7510
7511
7512
7513
7514
7515
7516
7517
7518
7519
7520
7521
7522
7523
7524
7525
7526
7527
7528
7529
7530
7531
7532
7533
7534
7535
7536
7537
7538
7539
7540
7541
7542
7543
7544
7545
7546
7547
7548
7549
7550
7551
7552
7553
7554
7555
7556
7557
7558
7559
7560
7561
7562
7563
7564
7565
7566
7567
7568
7569
7570
7571
7572
7573
7574
7575
7576
7577
7578
7579
7580
7581
7582
7583
7584
7585
7586
7587
7588
7589
7590
7591
7592
7593
7594
7595
7596
7597
7598
7599
7600
7601
7602
7603
7604
7605
7606
7607
7608
7609
7610
7611
7612
7613
7614
7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
7625
7626
7627
7628
7629
7630
7631
7632
7633
7634
7635
7636
7637
7638
7639
7640
7641
7642
7643
7644
7645
7646
7647
7648
7649
7650
7651
7652
7653
7654
7655
7656
7657
7658
7659
7660
7661
7662
7663
7664
7665
7666
7667
7668
7669
7670
7671
7672
7673
7674
7675
7676
7677
7678
7679
7680
7681
7682
7683
7684
7685
7686
7687
7688
7689
7690
7691
7692
7693
7694
7695
7696
7697
7698
7699
7700
7701
7702
7703
7704
7705
7706
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
7740
7741
7742
7743
7744
7745
7746
7747
7748
7749
7750
7751
7752
7753
7754
7755
7756
7757
7758
7759
7760
7761
7762
7763
7764
7765
7766
7767
7768
7769
7770
7771
7772
7773
7774
7775
7776
7777
7778
7779
7780
7781
7782
7783
7784
7785
7786
7787
7788
7789
7790
7791
7792
7793
7794
7795
7796
7797
7798
7799
7800
7801
7802
7803
7804
7805
7806
7807
7808
7809
7810
7811
7812
7813
7814
7815
7816
7817
7818
7819
7820
7821
7822
7823
7824
7825
7826
7827
7828
7829
7830
7831
7832
7833
7834
7835
7836
7837
7838
7839
7840
7841
7842
7843
7844
7845
7846
7847
7848
7849
7850
7851
7852
7853
7854
7855
7856
7857
7858
7859
7860
7861
7862
7863
7864
7865
7866
7867
7868
7869
7870
7871
7872
7873
7874
7875
7876
7877
7878
7879
7880
7881
7882
7883
7884
7885
7886
7887
7888
7889
7890
7891
7892
7893
7894
7895
7896
7897
7898
7899
7900
7901
7902
7903
7904
7905
7906
7907
7908
7909
7910
7911
7912
7913
7914
7915
7916
7917
7918
7919
7920
7921
7922
7923
7924
7925
7926
7927
7928
7929
7930
7931
7932
7933
7934
7935
7936
7937
7938
7939
7940
7941
7942
7943
7944
7945
7946
7947
7948
7949
7950
7951
7952
7953
7954
7955
7956
7957
7958
7959
7960
7961
7962
7963
7964
7965
7966
7967
7968
7969
7970
7971
7972
7973
7974
7975
7976
7977
7978
7979
7980
7981
7982
7983
7984
7985
7986
7987
7988
7989
7990
7991
7992
7993
7994
7995
7996
7997
7998
7999
8000
8001
8002
8003
8004
8005
8006
8007
8008
8009
8010
8011
8012
8013
8014
8015
8016
8017
8018
8019
8020
8021
8022
8023
8024
8025
8026
8027
8028
8029
8030
8031
8032
8033
8034
8035
8036
8037
8038
8039
8040
8041
8042
8043
8044
8045
8046
8047
8048
8049
8050
8051
8052
8053
8054
8055
8056
8057
8058
8059
8060
8061
8062
8063
8064
8065
8066
8067
8068
8069
8070
8071
8072
8073
8074
8075
8076
8077
8078
8079
8080
8081
8082
8083
8084
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
8110
8111
8112
8113
8114
8115
8116
8117
8118
8119
8120
8121
8122
8123
8124
8125
8126
8127
8128
8129
8130
8131
8132
8133
8134
8135
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
8150
8151
8152
8153
8154
8155
8156
8157
8158
8159
8160
8161
8162
8163
8164
8165
8166
8167
8168
8169
8170
8171
8172
8173
8174
8175
8176
8177
8178
8179
8180
8181
8182
8183
8184
8185
8186
8187
8188
8189
8190
8191
8192
8193
8194
8195
8196
8197
8198
8199
8200
8201
8202
8203
8204
8205
8206
8207
8208
8209
8210
8211
8212
8213
8214
8215
8216
8217
8218
8219
8220
8221
8222
8223
8224
8225
8226
8227
8228
8229
8230
8231
8232
8233
8234
8235
8236
8237
8238
8239
8240
8241
8242
8243
8244
8245
8246
8247
8248
8249
8250
8251
8252
8253
8254
8255
8256
8257
8258
8259
8260
8261
8262
8263
8264
8265
8266
8267
8268
8269
8270
8271
8272
8273
8274
8275
8276
8277
8278
8279
8280
8281
8282
8283
8284
8285
8286
8287
8288
8289
8290
8291
8292
8293
8294
8295
8296
8297
8298
8299
8300
8301
8302
8303
8304
8305
8306
8307
8308
8309
8310
8311
8312
8313
8314
8315
8316
8317
8318
8319
8320
8321
8322
8323
8324
8325
8326
8327
8328
8329
8330
8331
8332
8333
8334
8335
8336
8337
8338
8339
8340
8341
8342
8343
8344
8345
8346
8347
8348
8349
8350
8351
8352
8353
8354
8355
8356
8357
8358
8359
8360
8361
8362
8363
8364
8365
8366
8367
8368
8369
8370
8371
8372
8373
8374
8375
8376
8377
8378
8379
8380
8381
8382
8383
8384
8385
8386
8387
8388
8389
8390
8391
8392
8393
8394
8395
8396
8397
8398
8399
8400
8401
8402
8403
8404
8405
8406
8407
8408
8409
8410
8411
8412
8413
8414
8415
8416
8417
8418
8419
8420
8421
8422
8423
8424
8425
8426
8427
8428
8429
8430
8431
8432
8433
8434
8435
8436
8437
8438
8439
8440
8441
8442
8443
8444
8445
8446
8447
8448
8449
8450
8451
8452
8453
8454
8455
8456
8457
8458
8459
8460
8461
8462
8463
8464
8465
8466
8467
8468
8469
8470
8471
8472
8473
8474
8475
8476
8477
8478
8479
8480
8481
8482
8483
8484
8485
8486
8487
8488
8489
8490
8491
8492
8493
8494
8495
8496
8497
8498
8499
8500
8501
8502
8503
8504
8505
8506
8507
8508
8509
8510
8511
8512
8513
8514
8515
8516
8517
8518
8519
8520
8521
8522
8523
8524
8525
8526
8527
8528
8529
8530
8531
8532
8533
8534
8535
8536
8537
8538
8539
8540
8541
8542
8543
8544
8545
8546
8547
8548
8549
8550
8551
8552
8553
8554
8555
8556
8557
8558
8559
8560
8561
8562
8563
8564
8565
8566
8567
8568
8569
8570
8571
8572
8573
8574
8575
8576
8577
8578
8579
8580
8581
8582
8583
8584
8585
8586
8587
8588
8589
8590
8591
8592
8593
8594
8595
8596
8597
8598
8599
8600
8601
8602
8603
8604
8605
8606
8607
8608
8609
8610
8611
8612
8613
8614
8615
8616
8617
8618
8619
8620
8621
8622
8623
8624
8625
8626
8627
8628
8629
8630
8631
8632
8633
8634
8635
8636
8637
8638
8639
8640
8641
8642
8643
8644
8645
8646
8647
8648
8649
8650
8651
8652
8653
8654
8655
8656
8657
8658
8659
8660
8661
8662
8663
8664
8665
8666
8667
8668
8669
8670
8671
8672
8673
8674
8675
8676
8677
8678
8679
8680
8681
8682
8683
8684
8685
8686
8687
8688
8689
8690
8691
8692
8693
8694
8695
8696
8697
8698
8699
8700
8701
8702
8703
8704
8705
8706
8707
8708
8709
8710
8711
8712
8713
8714
8715
8716
8717
8718
8719
8720
8721
8722
8723
8724
8725
8726
8727
8728
8729
8730
8731
8732
8733
8734
8735
8736
8737
8738
8739
8740
8741
8742
8743
8744
8745
8746
8747
8748
8749
8750
8751
8752
8753
8754
8755
8756
8757
8758
8759
8760
8761
8762
8763
8764
8765
8766
8767
8768
8769
8770
8771
8772
8773
8774
8775
8776
8777
8778
8779
8780
8781
8782
8783
8784
8785
8786
8787
8788
8789
8790
8791
8792
8793
8794
8795
8796
8797
8798
8799
8800
8801
8802
8803
8804
8805
8806
8807
8808
8809
8810
8811
8812
8813
8814
8815
8816
8817
8818
8819
8820
8821
8822
8823
8824
8825
8826
8827
8828
8829
8830
8831
8832
8833
8834
8835
8836
8837
8838
8839
8840
8841
8842
8843
8844
8845
8846
8847
8848
8849
8850
8851
8852
8853
8854
8855
8856
8857
8858
8859
8860
8861
8862
8863
8864
8865
8866
8867
8868
8869
8870
8871
8872
8873
8874
8875
8876
8877
8878
8879
8880
8881
8882
8883
8884
8885
8886
8887
8888
8889
8890
8891
8892
8893
8894
8895
8896
8897
8898
8899
8900
8901
8902
8903
8904
8905
8906
8907
8908
8909
8910
8911
8912
8913
8914
8915
8916
8917
8918
8919
8920
8921
8922
8923
8924
8925
8926
8927
8928
8929
8930
8931
8932
8933
8934
8935
8936
8937
8938
8939
8940
8941
8942
8943
8944
8945
8946
8947
8948
8949
8950
8951
8952
8953
8954
8955
8956
8957
8958
8959
8960
8961
8962
8963
8964
8965
8966
8967
8968
8969
8970
8971
8972
8973
8974
8975
8976
8977
8978
8979
8980
8981
8982
8983
8984
8985
8986
8987
8988
8989
8990
8991
8992
8993
8994
8995
8996
8997
8998
8999
9000
9001
9002
9003
9004
9005
9006
9007
9008
9009
9010
9011
9012
9013
9014
9015
9016
9017
9018
9019
9020
9021
9022
9023
9024
9025
9026
9027
9028
9029
9030
9031
9032
9033
9034
9035
9036
9037
9038
9039
9040
9041
9042
9043
9044
9045
9046
9047
9048
9049
9050
9051
9052
9053
9054
9055
9056
9057
9058
9059
9060
9061
9062
9063
9064
9065
9066
9067
9068
9069
9070
9071
9072
9073
9074
9075
9076
9077
9078
9079
9080
9081
9082
9083
9084
9085
9086
9087
9088
9089
9090
9091
9092
9093
9094
9095
9096
9097
9098
9099
9100
9101
9102
9103
9104
9105
9106
9107
9108
9109
9110
9111
9112
9113
9114
9115
9116
9117
9118
9119
9120
9121
9122
9123
9124
9125
9126
9127
9128
9129
9130
9131
9132
9133
9134
9135
9136
9137
9138
9139
9140
9141
9142
9143
9144
9145
9146
9147
9148
9149
9150
9151
9152
9153
9154
9155
9156
9157
9158
9159
9160
9161
9162
9163
9164
9165
9166
9167
9168
9169
9170
9171
9172
9173
9174
9175
9176
9177
9178
9179
9180
9181
9182
9183
9184
9185
9186
9187
9188
9189
9190
9191
9192
9193
9194
9195
9196
9197
9198
9199
9200
9201
9202
9203
9204
9205
9206
9207
9208
9209
9210
9211
9212
9213
9214
9215
9216
9217
9218
9219
9220
9221
9222
9223
9224
9225
9226
9227
9228
9229
9230
9231
9232
9233
9234
9235
9236
9237
9238
9239
9240
9241
9242
9243
9244
9245
9246
9247
9248
9249
9250
9251
9252
9253
9254
9255
9256
9257
9258
9259
9260
9261
9262
9263
9264
9265
9266
9267
9268
9269
9270
9271
9272
9273
9274
9275
9276
9277
9278
9279
9280
9281
9282
9283
9284
9285
9286
9287
9288
9289
9290
9291
9292
9293
9294
9295
9296
9297
9298
9299
9300
9301
9302
9303
9304
9305
9306
9307
9308
9309
9310
9311
9312
9313
9314
9315
9316
9317
9318
9319
9320
9321
9322
9323
9324
9325
9326
9327
9328
9329
9330
9331
9332
9333
9334
9335
9336
9337
9338
9339
9340
9341
9342
9343
9344
9345
9346
9347
9348
9349
9350
9351
9352
9353
9354
9355
9356
9357
9358
9359
9360
9361
9362
9363
9364
9365
9366
9367
9368
9369
9370
9371
9372
9373
9374
9375
9376
9377
9378
9379
9380
9381
9382
9383
9384
9385
9386
9387
9388
9389
9390
9391
9392
9393
9394
9395
9396
9397
9398
9399
9400
9401
9402
9403
9404
9405
9406
9407
9408
9409
9410
9411
9412
9413
9414
9415
9416
9417
9418
9419
9420
9421
9422
9423
9424
9425
9426
9427
9428
9429
9430
9431
9432
9433
9434
9435
9436
9437
9438
9439
9440
9441
9442
9443
9444
9445
9446
9447
9448
9449
9450
9451
9452
9453
9454
9455
9456
9457
9458
9459
9460
9461
9462
9463
9464
9465
9466
9467
9468
9469
9470
9471
9472
9473
9474
9475
9476
9477
9478
9479
9480
9481
9482
9483
9484
9485
9486
9487
9488
9489
9490
9491
9492
9493
9494
9495
9496
9497
9498
9499
9500
9501
9502
9503
9504
9505
9506
9507
9508
9509
9510
9511
9512
9513
9514
9515
9516
9517
9518
9519
9520
9521
9522
9523
9524
9525
9526
9527
9528
9529
9530
9531
9532
9533
9534
9535
9536
9537
9538
9539
9540
9541
9542
9543
9544
9545
9546
9547
9548
9549
9550
9551
9552
9553
9554
9555
9556
9557
9558
9559
9560
9561
9562
9563
9564
9565
9566
9567
9568
9569
9570
9571
9572
9573
9574
9575
9576
9577
9578
9579
9580
9581
9582
9583
9584
9585
9586
9587
9588
9589
9590
9591
9592
9593
9594
9595
9596
9597
9598
9599
9600
9601
9602
9603
9604
9605
9606
9607
9608
9609
9610
9611
9612
9613
9614
9615
9616
9617
9618
9619
9620
9621
9622
9623
9624
9625
9626
9627
9628
9629
9630
9631
9632
9633
9634
9635
9636
9637
9638
9639
9640
9641
9642
9643
9644
9645
9646
9647
9648
9649
9650
9651
9652
9653
9654
9655
9656
9657
9658
9659
9660
9661
9662
9663
9664
9665
9666
9667
9668
9669
9670
9671
9672
9673
9674
9675
9676
9677
9678
9679
9680
9681
9682
9683
9684
9685
9686
9687
9688
9689
9690
9691
9692
9693
9694
9695
9696
9697
9698
9699
9700
9701
9702
9703
9704
9705
9706
9707
9708
9709
9710
9711
9712
9713
9714
9715
9716
9717
9718
9719
9720
9721
9722
9723
9724
9725
9726
9727
9728
9729
9730
9731
9732
9733
9734
9735
9736
9737
9738
9739
9740
9741
9742
9743
9744
9745
9746
9747
9748
9749
9750
9751
9752
9753
9754
9755
9756
9757
9758
9759
9760
9761
9762
9763
9764
9765
9766
9767
9768
9769
9770
9771
9772
9773
9774
9775
9776
9777
9778
9779
9780
9781
9782
9783
9784
9785
9786
9787
9788
9789
9790
9791
9792
9793
9794
9795
9796
9797
9798
9799
9800
9801
9802
9803
9804
9805
9806
9807
9808
9809
9810
9811
9812
9813
9814
9815
9816
9817
9818
9819
9820
9821
9822
9823
9824
9825
9826
9827
9828
9829
9830
9831
9832
9833
9834
9835
9836
9837
9838
9839
9840
9841
9842
9843
9844
9845
9846
9847
9848
9849
9850
9851
9852
9853
9854
9855
9856
9857
9858
9859
9860
9861
9862
9863
9864
9865
9866
9867
9868
9869
9870
9871
9872
9873
9874
9875
9876
9877
9878
9879
9880
9881
9882
9883
9884
9885
9886
9887
9888
9889
9890
9891
9892
9893
9894
9895
9896
9897
9898
9899
9900
9901
9902
9903
9904
9905
9906
9907
9908
9909
9910
9911
9912
9913
9914
9915
9916
9917
9918
9919
9920
9921
9922
9923
9924
9925
9926
9927
9928
9929
9930
9931
9932
9933
9934
9935
9936
9937
9938
9939
9940
9941
9942
9943
9944
9945
9946
9947
9948
9949
9950
9951
9952
9953
9954
9955
9956
9957
9958
9959
9960
9961
9962
9963
9964
9965
9966
9967
9968
9969
9970
9971
9972
9973
9974
9975
9976
9977
9978
9979
9980
9981
9982
9983
9984
9985
9986
9987
9988
9989
9990
9991
9992
9993
9994
9995
9996
9997
9998
9999
10000
10001
10002
10003
10004
10005
10006
10007
10008
10009
10010
10011
10012
10013
10014
10015
10016
10017
10018
10019
10020
10021
10022
10023
10024
10025
10026
10027
10028
10029
10030
10031
10032
10033
10034
10035
10036
10037
10038
10039
10040
10041
10042
10043
10044
10045
10046
10047
10048
10049
10050
10051
10052
10053
10054
10055
10056
10057
10058
10059
10060
10061
10062
10063
10064
10065
10066
10067
10068
10069
10070
10071
10072
10073
10074
10075
10076
10077
10078
10079
10080
10081
10082
10083
10084
10085
10086
10087
10088
10089
10090
10091
10092
10093
10094
10095
10096
10097
10098
10099
10100
10101
10102
10103
10104
10105
10106
10107
10108
10109
10110
10111
10112
10113
10114
10115
10116
10117
10118
10119
10120
10121
10122
10123
10124
10125
10126
10127
10128
10129
10130
10131
10132
10133
10134
10135
10136
10137
10138
10139
10140
10141
10142
10143
10144
10145
10146
10147
10148
10149
10150
10151
10152
10153
10154
10155
10156
10157
10158
10159
10160
10161
10162
10163
10164
10165
10166
10167
10168
10169
10170
10171
10172
10173
10174
10175
10176
10177
10178
10179
10180
10181
10182
10183
10184
10185
10186
10187
10188
10189
10190
10191
10192
10193
10194
10195
10196
10197
10198
10199
10200
10201
10202
10203
10204
10205
10206
10207
10208
10209
10210
10211
10212
10213
10214
10215
10216
10217
10218
10219
10220
10221
10222
10223
10224
10225
10226
10227
10228
10229
10230
10231
10232
10233
10234
10235
10236
10237
10238
10239
10240
10241
10242
10243
10244
10245
10246
10247
10248
10249
10250
10251
10252
10253
10254
10255
10256
10257
10258
10259
10260
10261
10262
10263
10264
10265
10266
10267
10268
10269
10270
10271
10272
10273
10274
10275
10276
10277
10278
10279
10280
10281
10282
10283
10284
10285
10286
10287
10288
10289
10290
10291
10292
10293
10294
10295
10296
10297
10298
10299
10300
10301
10302
10303
10304
10305
10306
10307
10308
10309
10310
10311
10312
10313
10314
10315
10316
10317
10318
10319
10320
10321
10322
10323
10324
10325
10326
10327
10328
10329
10330
10331
10332
10333
10334
10335
10336
10337
10338
10339
10340
10341
10342
10343
10344
10345
10346
10347
10348
10349
10350
10351
10352
10353
10354
10355
10356
10357
10358
10359
10360
10361
10362
10363
10364
10365
10366
10367
10368
10369
10370
10371
10372
10373
10374
10375
10376
10377
10378
10379
10380
10381
10382
10383
10384
10385
10386
10387
10388
10389
10390
10391
10392
10393
10394
10395
10396
10397
10398
10399
10400
10401
10402
10403
10404
10405
10406
10407
10408
10409
10410
10411
10412
10413
10414
10415
10416
10417
10418
10419
10420
10421
10422
10423
10424
10425
10426
10427
10428
10429
10430
10431
10432
10433
10434
10435
10436
10437
10438
10439
10440
10441
10442
10443
10444
10445
10446
10447
10448
10449
10450
10451
10452
10453
10454
10455
10456
10457
10458
10459
10460
10461
10462
10463
10464
10465
10466
10467
10468
10469
10470
10471
10472
10473
10474
10475
10476
10477
10478
10479
10480
10481
10482
10483
10484
10485
10486
10487
10488
10489
10490
10491
10492
10493
10494
10495
10496
10497
10498
10499
10500
10501
10502
10503
10504
10505
10506
10507
10508
10509
10510
10511
10512
10513
10514
10515
10516
10517
10518
10519
10520
10521
10522
10523
10524
10525
10526
10527
10528
10529
10530
10531
10532
10533
10534
10535
10536
10537
10538
10539
10540
10541
10542
10543
10544
10545
10546
10547
10548
10549
10550
10551
10552
10553
10554
10555
10556
10557
10558
10559
10560
10561
10562
10563
10564
10565
10566
10567
10568
10569
10570
10571
10572
10573
10574
10575
10576
10577
10578
10579
10580
10581
10582
10583
10584
10585
10586
10587
10588
10589
10590
10591
10592
10593
10594
10595
10596
10597
10598
10599
10600
10601
10602
10603
10604
10605
10606
10607
10608
10609
10610
10611
10612
10613
10614
10615
10616
10617
10618
10619
10620
10621
10622
10623
10624
10625
10626
10627
10628
10629
10630
10631
10632
10633
10634
10635
10636
10637
10638
10639
10640
10641
10642
10643
10644
10645
10646
10647
10648
10649
10650
10651
10652
10653
10654
10655
10656
10657
10658
10659
10660
10661
10662
10663
10664
10665
10666
10667
10668
10669
10670
10671
10672
10673
10674
10675
10676
10677
10678
10679
10680
10681
10682
10683
10684
10685
10686
10687
10688
10689
10690
10691
10692
10693
10694
10695
10696
10697
10698
10699
10700
10701
10702
10703
10704
10705
10706
10707
10708
10709
10710
10711
10712
10713
10714
10715
10716
10717
10718
10719
10720
10721
10722
10723
10724
10725
10726
10727
10728
10729
10730
10731
10732
10733
10734
10735
10736
10737
10738
10739
10740
10741
10742
10743
10744
10745
10746
10747
10748
10749
10750
10751
10752
10753
10754
10755
10756
10757
10758
10759
10760
10761
10762
10763
10764
10765
10766
10767
10768
10769
10770
10771
10772
10773
10774
10775
10776
10777
10778
10779
10780
10781
10782
10783
10784
10785
10786
10787
10788
10789
10790
10791
10792
10793
10794
10795
10796
10797
10798
10799
10800
10801
10802
10803
10804
10805
10806
10807
10808
10809
10810
10811
10812
10813
10814
10815
10816
10817
10818
10819
10820
10821
10822
10823
10824
10825
10826
10827
10828
10829
10830
10831
10832
10833
10834
10835
10836
10837
10838
10839
10840
10841
10842
10843
10844
10845
10846
10847
10848
10849
10850
10851
10852
10853
10854
10855
10856
10857
10858
10859
10860
10861
10862
10863
10864
10865
10866
10867
10868
10869
10870
10871
10872
10873
10874
10875
10876
10877
10878
10879
10880
10881
10882
10883
10884
10885
10886
10887
10888
10889
10890
10891
10892
10893
10894
10895
10896
10897
10898
10899
10900
10901
10902
10903
10904
10905
10906
10907
10908
10909
10910
10911
10912
10913
10914
10915
10916
10917
10918
10919
10920
10921
10922
10923
10924
10925
10926
10927
10928
10929
10930
10931
10932
10933
10934
10935
10936
10937
10938
10939
10940
10941
10942
10943
10944
10945
10946
10947
10948
10949
10950
10951
10952
10953
10954
10955
10956
10957
10958
10959
10960
10961
10962
10963
10964
10965
10966
10967
10968
10969
10970
10971
10972
10973
10974
10975
10976
10977
10978
10979
10980
10981
10982
10983
10984
10985
10986
10987
10988
10989
10990
10991
10992
10993
10994
10995
10996
10997
10998
10999
11000
11001
11002
11003
11004
11005
11006
11007
11008
11009
11010
11011
11012
11013
11014
11015
11016
11017
11018
11019
11020
11021
11022
11023
11024
11025
11026
11027
11028
11029
11030
11031
11032
11033
11034
11035
11036
11037
11038
11039
11040
11041
11042
11043
11044
11045
11046
11047
11048
11049
11050
11051
11052
11053
11054
11055
11056
11057
11058
11059
11060
11061
11062
11063
11064
11065
11066
11067
11068
11069
11070
11071
11072
11073
11074
11075
11076
11077
11078
11079
11080
11081
11082
11083
11084
11085
11086
11087
11088
11089
11090
11091
11092
11093
11094
11095
11096
11097
11098
11099
11100
11101
11102
11103
11104
11105
11106
11107
11108
11109
11110
11111
11112
11113
11114
11115
11116
11117
11118
11119
11120
11121
11122
11123
11124
11125
11126
11127
11128
11129
11130
11131
11132
11133
11134
11135
11136
11137
11138
11139
11140
11141
11142
11143
11144
11145
11146
11147
11148
11149
11150
11151
11152
11153
11154
11155
11156
11157
11158
11159
11160
11161
11162
11163
11164
11165
11166
11167
11168
11169
11170
11171
11172
11173
11174
11175
11176
11177
11178
11179
11180
11181
11182
11183
11184
11185
11186
11187
11188
11189
11190
11191
11192
11193
11194
11195
11196
11197
11198
11199
11200
11201
11202
11203
11204
11205
11206
11207
11208
11209
11210
11211
11212
11213
11214
11215
11216
11217
11218
11219
11220
11221
11222
11223
11224
11225
11226
11227
11228
11229
11230
11231
11232
11233
11234
11235
11236
11237
11238
11239
11240
11241
11242
11243
11244
11245
11246
11247
11248
11249
11250
11251
11252
11253
11254
11255
11256
11257
11258
11259
11260
11261
11262
11263
11264
11265
11266
11267
11268
11269
11270
11271
11272
11273
11274
11275
11276
11277
11278
11279
11280
11281
11282
11283
11284
11285
11286
11287
11288
11289
11290
11291
11292
11293
11294
11295
11296
11297
11298
11299
11300
11301
11302
11303
11304
11305
11306
11307
11308
11309
11310
11311
11312
11313
11314
11315
11316
11317
11318
11319
11320
11321
11322
11323
11324
11325
11326
11327
11328
11329
11330
11331
11332
11333
11334
11335
11336
11337
11338
11339
11340
11341
11342
11343
11344
11345
11346
11347
11348
11349
11350
11351
11352
11353
11354
11355
11356
11357
11358
11359
11360
11361
11362
11363
11364
11365
11366
11367
11368
11369
11370
11371
11372
11373
11374
11375
11376
11377
11378
11379
11380
11381
11382
11383
11384
11385
11386
11387
11388
11389
11390
11391
11392
11393
11394
11395
11396
11397
11398
11399
11400
11401
11402
11403
11404
11405
11406
11407
11408
11409
11410
11411
11412
11413
11414
11415
11416
11417
11418
11419
11420
11421
11422
11423
11424
11425
11426
11427
11428
11429
11430
11431
11432
11433
11434
11435
11436
11437
11438
11439
11440
11441
11442
11443
11444
11445
11446
11447
11448
11449
11450
11451
11452
11453
11454
11455
11456
11457
11458
11459
11460
11461
11462
11463
11464
11465
11466
11467
11468
11469
11470
11471
11472
11473
11474
11475
11476
11477
11478
11479
11480
11481
11482
11483
11484
11485
11486
11487
11488
11489
11490
11491
11492
11493
11494
11495
11496
11497
11498
11499
11500
11501
11502
11503
11504
11505
11506
11507
11508
11509
11510
11511
11512
11513
11514
11515
11516
11517
11518
11519
11520
11521
11522
11523
11524
11525
11526
11527
11528
11529
11530
11531
11532
11533
11534
11535
11536
11537
11538
11539
11540
11541
11542
11543
11544
11545
11546
11547
11548
11549
11550
11551
11552
11553
11554
11555
11556
11557
11558
11559
11560
11561
11562
11563
11564
11565
11566
11567
11568
11569
11570
11571
11572
11573
11574
11575
11576
11577
11578
11579
11580
11581
11582
11583
11584
11585
11586
11587
11588
11589
11590
11591
11592
11593
11594
11595
11596
11597
11598
11599
11600
11601
11602
11603
11604
11605
11606
11607
11608
11609
11610
11611
11612
11613
11614
11615
11616
11617
11618
11619
11620
11621
11622
11623
11624
11625
11626
11627
11628
11629
11630
11631
11632
11633
11634
11635
11636
11637
11638
11639
11640
11641
11642
11643
11644
11645
11646
11647
11648
11649
11650
11651
11652
11653
11654
11655
11656
11657
11658
11659
11660
11661
11662
11663
11664
11665
11666
11667
11668
11669
11670
11671
11672
11673
11674
11675
11676
11677
11678
11679
11680
11681
11682
11683
11684
11685
11686
11687
11688
11689
11690
11691
11692
11693
11694
11695
11696
11697
11698
11699
11700
11701
11702
11703
11704
11705
11706
11707
11708
11709
11710
11711
11712
11713
11714
11715
11716
11717
11718
11719
11720
11721
11722
11723
11724
11725
11726
11727
11728
11729
11730
11731
11732
11733
11734
11735
11736
11737
11738
11739
11740
11741
11742
11743
11744
11745
11746
11747
11748
11749
11750
11751
11752
11753
11754
11755
11756
11757
11758
11759
11760
11761
11762
11763
11764
11765
11766
11767
11768
11769
11770
11771
11772
11773
11774
11775
11776
11777
11778
11779
11780
11781
11782
11783
11784
11785
11786
11787
11788
11789
11790
11791
11792
11793
11794
11795
11796
11797
11798
11799
11800
11801
11802
11803
11804
11805
11806
11807
11808
11809
11810
11811
11812
11813
11814
11815
11816
11817
11818
11819
11820
11821
11822
11823
11824
11825
11826
11827
11828
11829
11830
11831
11832
11833
11834
11835
11836
11837
11838
11839
11840
11841
11842
11843
11844
11845
11846
11847
11848
11849
11850
11851
11852
11853
11854
11855
11856
11857
11858
11859
11860
11861
11862
11863
11864
11865
11866
11867
11868
11869
11870
11871
11872
11873
11874
11875
11876
11877
11878
11879
11880
11881
11882
11883
11884
11885
11886
11887
11888
11889
11890
11891
11892
11893
11894
11895
11896
11897
11898
11899
11900
11901
11902
11903
11904
11905
11906
11907
11908
11909
11910
11911
11912
11913
11914
11915
11916
11917
11918
11919
11920
11921
11922
11923
11924
11925
11926
11927
11928
11929
11930
11931
11932
11933
11934
11935
11936
11937
11938
11939
11940
11941
11942
11943
11944
11945
11946
11947
11948
11949
11950
11951
11952
11953
11954
11955
11956
11957
11958
11959
11960
11961
11962
11963
11964
11965
11966
11967
11968
11969
11970
11971
11972
11973
11974
11975
11976
11977
11978
11979
11980
11981
11982
11983
11984
11985
11986
11987
11988
11989
11990
11991
11992
11993
11994
11995
11996
11997
11998
11999
12000
12001
12002
12003
12004
12005
12006
12007
12008
12009
12010
12011
12012
12013
12014
12015
12016
12017
12018
12019
12020
12021
12022
12023
12024
12025
12026
12027
12028
12029
12030
12031
12032
12033
12034
12035
12036
12037
12038
12039
12040
12041
12042
12043
12044
12045
12046
12047
12048
12049
12050
12051
12052
12053
12054
12055
12056
12057
12058
12059
12060
12061
12062
12063
12064
12065
12066
12067
12068
12069
12070
12071
12072
12073
12074
12075
12076
12077
12078
12079
12080
12081
12082
12083
12084
12085
12086
12087
12088
12089
12090
12091
12092
12093
12094
12095
12096
12097
12098
12099
12100
12101
12102
12103
12104
12105
12106
12107
12108
12109
12110
12111
12112
12113
12114
12115
12116
12117
12118
12119
12120
12121
12122
12123
12124
12125
12126
12127
12128
12129
12130
12131
12132
12133
12134
12135
12136
12137
12138
12139
12140
12141
12142
12143
12144
12145
12146
12147
12148
12149
12150
12151
12152
12153
12154
12155
12156
12157
12158
12159
12160
12161
12162
12163
12164
12165
12166
12167
12168
12169
12170
12171
12172
12173
12174
12175
12176
12177
12178
12179
12180
12181
12182
12183
12184
12185
12186
12187
12188
12189
12190
12191
12192
12193
12194
12195
12196
12197
12198
12199
12200
12201
12202
12203
12204
12205
12206
12207
12208
12209
12210
12211
12212
12213
12214
12215
12216
12217
12218
12219
12220
12221
12222
12223
12224
12225
12226
12227
12228
12229
12230
12231
12232
12233
12234
12235
12236
12237
12238
12239
12240
12241
12242
12243
12244
12245
12246
12247
12248
12249
12250
12251
12252
12253
12254
12255
12256
12257
12258
12259
12260
12261
12262
12263
12264
12265
12266
12267
12268
12269
12270
12271
12272
12273
12274
12275
12276
12277
12278
12279
12280
12281
12282
12283
12284
12285
12286
12287
12288
12289
12290
12291
12292
12293
12294
12295
12296
12297
12298
12299
12300
12301
12302
12303
12304
12305
12306
12307
12308
12309
12310
12311
12312
12313
12314
12315
12316
12317
12318
12319
12320
12321
12322
12323
12324
12325
12326
12327
12328
12329
12330
12331
12332
12333
12334
12335
12336
12337
12338
12339
12340
12341
12342
12343
12344
12345
12346
12347
12348
12349
12350
12351
12352
12353
12354
12355
12356
12357
12358
12359
12360
12361
12362
12363
12364
12365
12366
12367
12368
12369
12370
12371
12372
12373
12374
12375
12376
12377
12378
12379
12380
12381
12382
12383
12384
12385
12386
12387
12388
12389
12390
12391
12392
12393
12394
12395
12396
12397
12398
12399
12400
12401
12402
12403
12404
12405
12406
12407
12408
12409
12410
12411
12412
12413
12414
12415
12416
12417
12418
12419
12420
12421
12422
12423
12424
12425
12426
12427
12428
12429
12430
12431
12432
12433
12434
12435
12436
12437
12438
12439
12440
12441
12442
12443
12444
12445
12446
12447
12448
12449
12450
12451
12452
12453
12454
12455
12456
12457
12458
12459
12460
12461
12462
12463
12464
12465
12466
12467
12468
12469
12470
12471
12472
12473
12474
12475
12476
12477
12478
12479
12480
12481
12482
12483
12484
12485
12486
12487
12488
12489
12490
12491
12492
12493
12494
12495
12496
12497
12498
12499
12500
12501
12502
12503
12504
12505
12506
12507
12508
12509
12510
12511
12512
12513
12514
12515
12516
12517
12518
12519
12520
12521
12522
12523
12524
12525
12526
12527
12528
12529
12530
12531
12532
12533
12534
12535
12536
12537
12538
12539
12540
12541
12542
12543
12544
12545
12546
12547
12548
12549
12550
12551
12552
12553
12554
12555
12556
12557
12558
12559
12560
12561
12562
12563
12564
12565
12566
12567
12568
12569
12570
12571
12572
12573
12574
12575
12576
12577
12578
12579
12580
12581
12582
12583
12584
12585
12586
12587
12588
12589
12590
12591
12592
12593
12594
12595
12596
12597
12598
12599
12600
12601
12602
12603
12604
12605
12606
12607
12608
12609
12610
12611
12612
12613
12614
12615
12616
12617
12618
12619
12620
12621
12622
12623
12624
12625
12626
12627
12628
12629
12630
12631
12632
12633
12634
12635
12636
12637
12638
12639
12640
12641
12642
12643
12644
12645
12646
12647
12648
12649
12650
12651
12652
12653
12654
12655
12656
12657
12658
12659
12660
12661
12662
12663
12664
12665
12666
12667
12668
12669
12670
12671
12672
12673
12674
12675
12676
12677
12678
12679
12680
12681
12682
12683
12684
12685
12686
12687
12688
12689
12690
12691
12692
12693
12694
12695
12696
12697
12698
12699
12700
12701
12702
12703
12704
12705
12706
12707
12708
12709
12710
12711
12712
12713
12714
12715
12716
12717
12718
12719
12720
12721
12722
12723
12724
12725
12726
12727
12728
12729
12730
12731
12732
12733
12734
12735
12736
12737
12738
12739
12740
12741
12742
12743
12744
12745
12746
12747
12748
12749
12750
12751
12752
12753
12754
12755
12756
12757
12758
12759
12760
12761
12762
12763
12764
12765
12766
12767
12768
12769
12770
12771
12772
12773
12774
12775
12776
12777
12778
12779
12780
12781
12782
12783
12784
12785
12786
12787
12788
12789
12790
12791
12792
12793
12794
12795
12796
12797
12798
12799
12800
12801
12802
12803
12804
12805
12806
12807
12808
12809
12810
12811
12812
12813
12814
12815
12816
12817
12818
12819
12820
12821
12822
12823
12824
12825
12826
12827
12828
12829
12830
12831
12832
12833
12834
12835
12836
12837
12838
12839
12840
12841
12842
12843
12844
12845
12846
12847
12848
12849
12850
12851
12852
12853
12854
12855
12856
12857
12858
12859
12860
12861
12862
12863
12864
12865
12866
12867
12868
12869
12870
12871
12872
12873
12874
12875
12876
12877
12878
12879
12880
12881
12882
12883
12884
12885
12886
12887
12888
12889
12890
12891
12892
12893
12894
12895
12896
12897
12898
12899
12900
12901
12902
12903
12904
12905
12906
12907
12908
12909
12910
12911
12912
12913
12914
12915
12916
12917
12918
12919
12920
12921
12922
12923
12924
12925
12926
12927
12928
12929
12930
12931
12932
12933
12934
12935
12936
12937
12938
12939
12940
12941
12942
12943
12944
12945
12946
12947
12948
12949
12950
12951
12952
12953
12954
12955
12956
12957
12958
12959
12960
12961
12962
12963
12964
12965
12966
12967
12968
12969
12970
12971
12972
12973
12974
12975
12976
12977
12978
12979
12980
12981
12982
12983
12984
12985
12986
12987
12988
12989
12990
12991
12992
12993
12994
12995
12996
12997
12998
12999
13000
13001
13002
13003
13004
13005
13006
13007
13008
13009
13010
13011
13012
13013
13014
13015
13016
13017
13018
13019
13020
13021
13022
13023
13024
13025
13026
13027
13028
13029
13030
13031
13032
13033
13034
13035
13036
13037
13038
13039
13040
13041
13042
13043
13044
13045
13046
13047
13048
13049
13050
13051
13052
13053
13054
13055
13056
13057
13058
13059
13060
13061
13062
13063
13064
13065
13066
13067
13068
13069
13070
13071
13072
13073
13074
13075
13076
13077
13078
13079
13080
13081
13082
13083
13084
13085
13086
13087
13088
13089
13090
13091
13092
13093
13094
13095
13096
13097
13098
13099
13100
13101
13102
13103
13104
13105
13106
13107
13108
13109
13110
13111
13112
13113
13114
13115
13116
13117
13118
13119
13120
13121
13122
13123
13124
13125
13126
13127
13128
13129
13130
13131
13132
13133
13134
13135
13136
13137
13138
13139
13140
13141
13142
13143
13144
13145
13146
13147
13148
13149
13150
13151
13152
13153
13154
13155
13156
13157
13158
13159
13160
13161
13162
13163
13164
13165
13166
13167
13168
13169
13170
13171
13172
13173
13174
13175
13176
13177
13178
13179
13180
13181
13182
13183
13184
13185
13186
13187
13188
13189
13190
13191
13192
13193
13194
13195
13196
13197
13198
13199
13200
13201
13202
13203
13204
13205
13206
13207
13208
13209
13210
13211
13212
13213
13214
13215
13216
13217
13218
13219
13220
13221
13222
13223
13224
13225
13226
13227
13228
13229
13230
13231
13232
13233
13234
13235
13236
13237
13238
13239
13240
13241
13242
13243
13244
13245
13246
13247
13248
13249
13250
13251
13252
13253
13254
13255
13256
13257
13258
13259
13260
13261
13262
13263
13264
13265
13266
13267
13268
13269
13270
13271
13272
13273
13274
13275
13276
13277
13278
13279
13280
13281
13282
13283
13284
13285
13286
13287
13288
13289
13290
13291
13292
13293
13294
13295
13296
13297
13298
13299
13300
13301
13302
13303
13304
13305
13306
13307
13308
13309
13310
13311
13312
13313
13314
13315
13316
13317
13318
13319
13320
13321
13322
13323
13324
13325
13326
13327
13328
13329
13330
13331
13332
13333
13334
13335
13336
13337
13338
13339
13340
13341
13342
13343
13344
13345
13346
13347
13348
13349
13350
13351
13352
13353
13354
13355
13356
13357
13358
13359
13360
13361
13362
13363
13364
13365
13366
13367
13368
13369
13370
13371
13372
13373
13374
13375
13376
13377
13378
13379
13380
13381
13382
13383
13384
13385
13386
13387
13388
13389
13390
13391
13392
13393
13394
13395
13396
13397
13398
13399
13400
13401
13402
13403
13404
13405
13406
13407
13408
13409
13410
13411
13412
13413
13414
13415
13416
13417
13418
13419
13420
13421
13422
13423
13424
13425
13426
13427
13428
13429
13430
13431
13432
13433
13434
13435
13436
13437
13438
13439
13440
13441
13442
13443
13444
13445
13446
13447
13448
13449
13450
13451
13452
13453
13454
13455
13456
13457
13458
13459
13460
13461
13462
13463
13464
13465
13466
13467
13468
13469
13470
13471
13472
13473
13474
13475
13476
13477
13478
13479
13480
13481
13482
13483
13484
13485
13486
13487
13488
13489
13490
13491
13492
13493
13494
13495
13496
13497
13498
13499
13500
13501
13502
13503
13504
13505
13506
13507
13508
13509
13510
13511
13512
13513
13514
13515
13516
13517
13518
13519
13520
13521
13522
13523
13524
13525
13526
13527
13528
13529
13530
13531
13532
13533
13534
13535
13536
13537
13538
13539
13540
13541
13542
13543
13544
13545
13546
13547
13548
13549
13550
13551
13552
13553
13554
13555
13556
13557
13558
13559
13560
13561
13562
13563
13564
13565
13566
13567
13568
13569
13570
13571
13572
13573
13574
13575
13576
13577
13578
13579
13580
13581
13582
13583
13584
13585
13586
13587
13588
13589
13590
13591
13592
13593
13594
13595
13596
13597
13598
13599
13600
13601
13602
13603
13604
13605
13606
13607
13608
13609
13610
13611
13612
13613
13614
13615
13616
13617
13618
13619
13620
13621
13622
13623
13624
13625
13626
13627
13628
13629
13630
13631
13632
13633
13634
13635
13636
13637
13638
13639
13640
13641
13642
13643
13644
13645
13646
13647
13648
13649
13650
13651
13652
13653
13654
13655
13656
13657
13658
13659
13660
13661
13662
13663
13664
13665
13666
13667
13668
13669
13670
13671
13672
13673
13674
13675
13676
13677
13678
13679
13680
13681
13682
13683
13684
13685
13686
13687
13688
13689
13690
13691
13692
13693
13694
13695
13696
13697
13698
13699
13700
13701
13702
13703
13704
13705
13706
13707
13708
13709
13710
13711
13712
13713
13714
13715
13716
13717
13718
13719
13720
13721
13722
13723
13724
13725
13726
13727
13728
13729
13730
13731
13732
13733
13734
13735
13736
13737
13738
13739
13740
13741
13742
13743
13744
13745
13746
13747
13748
13749
13750
13751
13752
13753
13754
13755
13756
13757
13758
13759
13760
13761
13762
13763
13764
13765
13766
13767
13768
13769
13770
13771
13772
13773
13774
13775
13776
13777
13778
13779
13780
13781
13782
13783
13784
13785
13786
13787
13788
13789
13790
13791
13792
13793
13794
13795
13796
13797
13798
13799
13800
13801
13802
13803
13804
13805
13806
13807
13808
13809
13810
13811
13812
13813
13814
13815
13816
13817
13818
13819
13820
13821
13822
13823
13824
13825
13826
13827
13828
13829
13830
13831
13832
13833
13834
13835
13836
13837
13838
13839
13840
13841
13842
13843
13844
13845
13846
13847
13848
13849
13850
13851
13852
13853
13854
13855
13856
13857
13858
13859
13860
13861
13862
13863
13864
13865
13866
13867
13868
13869
13870
13871
13872
13873
13874
13875
13876
13877
13878
13879
13880
13881
13882
13883
13884
13885
13886
13887
13888
13889
13890
13891
13892
13893
13894
13895
13896
13897
13898
13899
13900
13901
13902
13903
13904
13905
13906
13907
13908
13909
13910
13911
13912
13913
13914
13915
13916
13917
13918
13919
13920
13921
13922
13923
13924
13925
13926
13927
13928
13929
13930
13931
13932
13933
13934
13935
13936
13937
13938
13939
13940
13941
13942
13943
13944
13945
13946
13947
13948
13949
13950
13951
13952
13953
13954
13955
13956
13957
13958
13959
13960
13961
13962
13963
13964
13965
13966
13967
13968
13969
13970
13971
13972
13973
13974
13975
13976
13977
13978
13979
13980
13981
13982
13983
13984
13985
13986
13987
13988
13989
13990
13991
13992
13993
13994
13995
13996
13997
13998
13999
14000
14001
14002
14003
14004
14005
14006
14007
14008
14009
14010
14011
14012
14013
14014
14015
14016
14017
14018
14019
14020
14021
14022
14023
14024
14025
14026
14027
14028
14029
14030
14031
14032
14033
14034
14035
14036
14037
14038
14039
14040
14041
14042
14043
14044
14045
14046
14047
14048
14049
14050
14051
14052
14053
14054
14055
14056
14057
14058
14059
14060
14061
14062
14063
14064
14065
14066
14067
14068
14069
14070
14071
14072
14073
14074
14075
14076
14077
14078
14079
14080
14081
14082
14083
14084
14085
14086
14087
14088
14089
14090
14091
14092
14093
14094
14095
14096
14097
14098
14099
14100
14101
14102
14103
14104
14105
14106
14107
14108
14109
14110
14111
14112
14113
14114
14115
14116
14117
14118
14119
14120
14121
14122
14123
14124
14125
14126
14127
14128
14129
14130
14131
14132
14133
14134
14135
14136
14137
14138
14139
14140
14141
14142
14143
14144
14145
14146
14147
14148
14149
14150
14151
14152
14153
14154
14155
14156
14157
14158
14159
14160
14161
14162
14163
14164
14165
14166
14167
14168
14169
14170
14171
14172
14173
14174
14175
14176
14177
14178
14179
14180
14181
14182
14183
14184
14185
14186
14187
14188
14189
14190
14191
14192
14193
14194
14195
14196
14197
14198
14199
14200
14201
14202
14203
14204
14205
14206
14207
14208
14209
14210
14211
14212
14213
14214
14215
14216
14217
14218
14219
14220
14221
14222
14223
14224
14225
14226
14227
14228
14229
14230
14231
14232
14233
14234
14235
14236
14237
14238
14239
14240
14241
14242
14243
14244
14245
14246
14247
14248
14249
14250
14251
14252
14253
14254
14255
14256
14257
14258
14259
14260
14261
14262
14263
14264
14265
14266
14267
14268
14269
14270
14271
14272
14273
14274
14275
14276
14277
14278
14279
14280
14281
14282
14283
14284
14285
14286
14287
14288
14289
14290
14291
14292
14293
14294
14295
14296
14297
14298
14299
14300
14301
14302
14303
14304
14305
14306
14307
14308
14309
14310
14311
14312
14313
14314
14315
14316
14317
14318
14319
14320
14321
14322
14323
14324
14325
14326
14327
14328
14329
14330
14331
14332
14333
14334
14335
14336
14337
14338
14339
14340
14341
14342
14343
14344
14345
14346
14347
14348
14349
14350
14351
14352
14353
14354
14355
14356
14357
14358
14359
14360
14361
14362
14363
14364
14365
14366
14367
14368
14369
14370
14371
14372
14373
14374
14375
14376
14377
14378
14379
14380
14381
14382
14383
14384
14385
14386
14387
14388
14389
14390
14391
14392
14393
14394
14395
14396
14397
14398
14399
14400
14401
14402
14403
14404
14405
14406
14407
14408
14409
14410
14411
14412
14413
14414
14415
14416
14417
14418
14419
14420
14421
14422
14423
14424
14425
14426
14427
14428
14429
14430
14431
14432
14433
14434
14435
14436
14437
14438
14439
14440
14441
14442
14443
14444
14445
14446
14447
14448
14449
14450
14451
14452
14453
14454
14455
14456
14457
14458
14459
14460
14461
14462
14463
14464
14465
14466
14467
14468
14469
14470
14471
14472
14473
14474
14475
14476
14477
14478
14479
14480
14481
14482
14483
14484
14485
14486
14487
14488
14489
14490
14491
14492
14493
14494
14495
14496
14497
14498
14499
14500
14501
14502
14503
14504
14505
14506
14507
14508
14509
14510
14511
14512
14513
14514
14515
14516
14517
14518
14519
14520
14521
14522
14523
14524
14525
14526
14527
14528
14529
14530
14531
14532
14533
14534
14535
14536
14537
14538
14539
14540
14541
14542
14543
14544
14545
14546
14547
14548
14549
14550
14551
14552
14553
14554
14555
14556
14557
14558
14559
14560
14561
14562
14563
14564
14565
14566
14567
14568
14569
14570
14571
14572
14573
14574
14575
14576
14577
14578
14579
14580
14581
14582
14583
14584
14585
14586
14587
14588
14589
14590
14591
14592
14593
14594
14595
14596
14597
14598
14599
14600
14601
14602
14603
14604
14605
14606
14607
14608
14609
14610
14611
14612
14613
14614
14615
14616
14617
14618
14619
14620
14621
14622
14623
14624
14625
14626
14627
14628
14629
14630
14631
14632
14633
14634
14635
14636
14637
14638
14639
14640
14641
14642
14643
14644
14645
14646
14647
14648
14649
14650
14651
14652
14653
14654
14655
14656
14657
14658
14659
14660
14661
14662
14663
14664
14665
14666
14667
14668
14669
14670
14671
14672
14673
14674
14675
14676
14677
14678
14679
14680
14681
14682
14683
14684
14685
14686
14687
14688
14689
14690
14691
14692
14693
14694
14695
14696
14697
14698
14699
14700
14701
14702
14703
14704
14705
14706
14707
14708
14709
14710
14711
14712
14713
14714
14715
14716
14717
14718
14719
14720
14721
14722
14723
14724
14725
14726
14727
14728
14729
14730
14731
14732
14733
14734
14735
14736
14737
14738
14739
14740
14741
14742
14743
14744
14745
14746
14747
14748
14749
14750
14751
14752
14753
14754
14755
14756
14757
14758
14759
14760
14761
14762
14763
14764
14765
14766
14767
14768
14769
14770
14771
14772
14773
14774
14775
14776
14777
14778
14779
14780
14781
14782
14783
14784
14785
14786
14787
14788
14789
14790
14791
14792
14793
14794
14795
14796
14797
14798
14799
14800
14801
14802
14803
14804
14805
14806
14807
14808
14809
14810
14811
14812
14813
14814
14815
14816
14817
14818
14819
14820
14821
14822
14823
14824
14825
14826
14827
14828
14829
14830
14831
14832
14833
14834
14835
14836
14837
14838
14839
14840
14841
14842
14843
14844
14845
14846
14847
14848
14849
14850
14851
14852
14853
14854
14855
14856
14857
14858
14859
14860
14861
14862
14863
14864
14865
14866
14867
14868
14869
14870
14871
14872
14873
14874
14875
14876
14877
14878
14879
14880
14881
14882
14883
14884
14885
14886
14887
14888
14889
14890
14891
14892
14893
14894
14895
14896
14897
14898
14899
14900
14901
14902
14903
14904
14905
14906
14907
14908
14909
14910
14911
14912
14913
14914
14915
14916
14917
14918
14919
14920
14921
14922
14923
14924
14925
14926
14927
14928
14929
14930
14931
14932
14933
14934
14935
14936
14937
14938
14939
14940
14941
14942
14943
14944
14945
14946
14947
14948
14949
14950
14951
14952
14953
14954
14955
14956
14957
14958
14959
14960
14961
14962
14963
14964
14965
14966
14967
14968
14969
14970
14971
14972
14973
14974
14975
14976
14977
14978
14979
14980
14981
14982
14983
14984
14985
14986
14987
14988
14989
14990
14991
14992
14993
14994
14995
14996
14997
14998
14999
15000
15001
15002
15003
15004
15005
15006
15007
15008
15009
15010
15011
15012
15013
15014
15015
15016
15017
15018
15019
15020
15021
15022
15023
15024
15025
15026
15027
15028
15029
15030
15031
15032
15033
15034
15035
15036
15037
15038
15039
15040
15041
15042
15043
15044
15045
15046
15047
15048
15049
15050
15051
15052
15053
15054
15055
15056
15057
15058
15059
15060
15061
15062
15063
15064
15065
15066
15067
15068
15069
15070
15071
15072
15073
15074
15075
15076
15077
15078
15079
15080
15081
15082
15083
15084
15085
15086
15087
15088
15089
15090
15091
15092
15093
15094
15095
15096
15097
15098
15099
15100
15101
15102
15103
15104
15105
15106
15107
15108
15109
15110
15111
15112
15113
15114
15115
15116
15117
15118
15119
15120
15121
15122
15123
15124
15125
15126
15127
15128
15129
15130
15131
15132
15133
15134
15135
15136
15137
15138
15139
15140
15141
15142
15143
15144
15145
15146
15147
15148
15149
15150
15151
15152
15153
15154
15155
15156
15157
15158
15159
15160
15161
15162
15163
15164
15165
15166
15167
15168
15169
15170
15171
15172
15173
15174
15175
15176
15177
15178
15179
15180
15181
15182
15183
15184
15185
15186
15187
15188
15189
15190
15191
15192
15193
15194
15195
15196
15197
15198
15199
15200
15201
15202
15203
15204
15205
15206
15207
15208
15209
15210
15211
15212
15213
15214
15215
15216
15217
15218
15219
15220
15221
15222
15223
15224
15225
15226
15227
15228
15229
15230
15231
15232
15233
15234
15235
15236
15237
15238
15239
15240
15241
15242
15243
15244
15245
15246
15247
15248
15249
15250
15251
15252
15253
15254
15255
15256
15257
15258
15259
15260
15261
15262
15263
15264
15265
15266
15267
15268
15269
15270
15271
15272
15273
15274
15275
15276
15277
15278
15279
15280
15281
15282
15283
15284
15285
15286
15287
15288
15289
15290
15291
15292
15293
15294
15295
15296
15297
15298
15299
15300
15301
15302
15303
15304
15305
15306
15307
15308
15309
15310
15311
15312
15313
15314
15315
15316
15317
15318
15319
15320
15321
15322
15323
15324
15325
15326
15327
15328
15329
15330
15331
15332
15333
15334
15335
15336
15337
15338
15339
15340
15341
15342
15343
15344
15345
15346
15347
15348
15349
15350
15351
15352
15353
15354
15355
15356
15357
15358
15359
15360
15361
15362
15363
15364
15365
15366
15367
15368
15369
15370
15371
15372
15373
15374
15375
15376
15377
15378
15379
15380
15381
15382
15383
15384
15385
15386
15387
15388
15389
15390
15391
15392
15393
15394
15395
15396
15397
15398
15399
15400
15401
15402
15403
15404
15405
15406
15407
15408
15409
15410
15411
15412
15413
15414
15415
15416
15417
15418
15419
15420
15421
15422
15423
15424
15425
15426
15427
15428
15429
15430
15431
15432
15433
15434
15435
15436
15437
15438
15439
15440
15441
15442
15443
15444
15445
15446
15447
15448
15449
15450
15451
15452
15453
15454
15455
15456
15457
15458
15459
15460
15461
15462
15463
15464
15465
15466
15467
15468
15469
15470
15471
15472
15473
15474
15475
15476
15477
15478
15479
15480
15481
15482
15483
15484
15485
15486
15487
15488
15489
15490
15491
15492
15493
15494
15495
15496
15497
15498
15499
15500
15501
15502
15503
15504
15505
15506
15507
15508
15509
15510
15511
15512
15513
15514
15515
15516
15517
15518
15519
15520
15521
15522
15523
15524
15525
15526
15527
15528
15529
15530
15531
15532
15533
15534
15535
15536
15537
15538
15539
15540
15541
15542
15543
15544
15545
15546
15547
15548
15549
15550
15551
15552
15553
15554
15555
15556
15557
15558
15559
15560
15561
15562
15563
15564
15565
15566
15567
15568
15569
15570
15571
15572
15573
15574
15575
15576
15577
15578
15579
15580
15581
15582
15583
15584
15585
15586
15587
15588
15589
15590
15591
15592
15593
15594
15595
15596
15597
15598
15599
15600
15601
15602
15603
15604
15605
15606
15607
15608
15609
15610
15611
15612
15613
15614
15615
15616
15617
15618
15619
15620
15621
15622
15623
15624
15625
15626
15627
15628
15629
15630
15631
15632
15633
15634
15635
15636
15637
15638
15639
15640
15641
15642
15643
15644
15645
15646
15647
15648
15649
15650
15651
15652
15653
15654
15655
15656
15657
15658
15659
15660
15661
15662
15663
15664
15665
15666
15667
15668
15669
15670
15671
15672
15673
15674
15675
15676
15677
15678
15679
15680
15681
15682
15683
15684
15685
15686
15687
15688
15689
15690
15691
15692
15693
15694
15695
15696
15697
15698
15699
15700
15701
15702
15703
15704
15705
15706
15707
15708
15709
15710
15711
15712
15713
15714
15715
15716
15717
15718
15719
15720
15721
15722
15723
15724
15725
15726
15727
15728
15729
15730
15731
15732
15733
15734
15735
15736
15737
15738
15739
15740
15741
15742
15743
15744
15745
15746
15747
15748
15749
15750
15751
15752
15753
15754
15755
15756
15757
15758
15759
15760
15761
15762
15763
15764
15765
15766
15767
15768
15769
15770
15771
15772
15773
15774
15775
15776
15777
15778
15779
15780
15781
15782
15783
15784
15785
15786
15787
15788
15789
15790
15791
15792
15793
15794
15795
15796
15797
15798
15799
15800
15801
15802
15803
15804
15805
15806
15807
15808
15809
15810
15811
15812
15813
15814
15815
15816
15817
15818
15819
15820
15821
15822
15823
15824
15825
15826
15827
15828
15829
15830
15831
15832
15833
15834
15835
15836
15837
15838
15839
15840
15841
15842
15843
15844
15845
15846
15847
15848
15849
15850
15851
15852
15853
15854
15855
15856
15857
15858
15859
15860
15861
15862
15863
15864
15865
15866
15867
15868
15869
15870
15871
15872
15873
15874
15875
15876
15877
15878
15879
15880
15881
15882
15883
15884
15885
15886
15887
15888
15889
15890
15891
15892
15893
15894
15895
15896
15897
15898
15899
15900
15901
15902
15903
15904
15905
15906
15907
15908
15909
15910
15911
15912
15913
15914
15915
15916
15917
15918
15919
15920
15921
15922
15923
15924
15925
15926
15927
15928
15929
15930
15931
15932
15933
15934
15935
15936
15937
15938
15939
15940
15941
15942
15943
15944
15945
15946
15947
15948
15949
15950
15951
15952
15953
15954
15955
15956
15957
15958
15959
15960
15961
15962
15963
15964
15965
15966
15967
15968
15969
15970
15971
15972
15973
15974
15975
15976
15977
15978
15979
15980
15981
15982
15983
15984
15985
15986
15987
15988
15989
15990
15991
15992
15993
15994
15995
15996
15997
15998
15999
16000
16001
16002
16003
16004
16005
16006
16007
16008
16009
16010
16011
16012
16013
16014
16015
16016
16017
16018
16019
16020
16021
16022
16023
16024
16025
16026
16027
16028
16029
16030
16031
16032
16033
16034
16035
16036
16037
16038
16039
16040
16041
16042
16043
16044
16045
16046
16047
16048
16049
16050
16051
16052
16053
16054
16055
16056
16057
16058
16059
16060
16061
16062
16063
16064
16065
16066
16067
16068
16069
16070
16071
16072
16073
16074
16075
16076
16077
16078
16079
16080
16081
16082
16083
16084
16085
16086
16087
16088
16089
16090
16091
16092
16093
16094
16095
16096
16097
16098
16099
16100
16101
16102
16103
16104
16105
16106
16107
16108
16109
16110
16111
16112
16113
16114
16115
16116
16117
16118
16119
16120
16121
16122
16123
16124
16125
16126
16127
16128
16129
16130
16131
16132
16133
16134
16135
16136
16137
16138
16139
16140
16141
16142
16143
16144
16145
16146
16147
16148
16149
16150
16151
16152
16153
16154
16155
16156
16157
16158
16159
16160
16161
16162
16163
16164
16165
16166
16167
16168
16169
16170
16171
16172
16173
16174
16175
16176
16177
16178
16179
16180
16181
16182
16183
16184
16185
16186
16187
16188
16189
16190
16191
16192
16193
16194
16195
16196
16197
16198
16199
16200
16201
16202
16203
16204
16205
16206
16207
16208
16209
16210
16211
16212
16213
16214
16215
16216
16217
16218
16219
16220
16221
16222
16223
16224
16225
16226
16227
16228
16229
16230
16231
16232
16233
16234
16235
16236
16237
16238
16239
16240
16241
16242
16243
16244
16245
16246
16247
16248
16249
16250
16251
16252
16253
16254
16255
16256
16257
16258
16259
16260
16261
16262
16263
16264
16265
16266
16267
16268
16269
16270
16271
16272
16273
16274
16275
16276
16277
16278
16279
16280
16281
16282
16283
16284
16285
16286
16287
16288
16289
16290
16291
16292
16293
16294
16295
16296
16297
16298
16299
16300
16301
16302
16303
16304
16305
16306
16307
16308
16309
16310
16311
16312
16313
16314
16315
16316
16317
16318
16319
16320
16321
16322
16323
16324
16325
16326
16327
16328
16329
16330
16331
16332
16333
16334
16335
16336
16337
16338
16339
16340
16341
16342
16343
16344
16345
16346
16347
16348
16349
16350
16351
16352
16353
16354
16355
16356
16357
16358
16359
16360
16361
16362
16363
16364
16365
16366
16367
16368
16369
16370
16371
16372
16373
16374
16375
16376
16377
16378
16379
16380
16381
16382
16383
16384
16385
16386
16387
16388
16389
16390
16391
16392
16393
16394
16395
16396
16397
16398
16399
16400
16401
16402
16403
16404
16405
16406
16407
16408
16409
16410
16411
16412
16413
16414
16415
16416
16417
16418
16419
16420
16421
16422
16423
16424
16425
16426
16427
16428
16429
16430
16431
16432
16433
16434
16435
16436
16437
16438
16439
16440
16441
16442
16443
16444
16445
16446
16447
16448
16449
16450
16451
16452
16453
16454
16455
16456
16457
16458
16459
16460
16461
16462
16463
16464
16465
16466
16467
16468
16469
16470
16471
16472
16473
16474
16475
16476
16477
16478
16479
16480
16481
16482
16483
16484
16485
16486
16487
16488
16489
16490
16491
16492
16493
16494
16495
16496
16497
16498
16499
16500
16501
16502
16503
16504
16505
16506
16507
16508
16509
16510
16511
16512
16513
16514
16515
16516
16517
16518
16519
16520
16521
16522
16523
16524
16525
16526
16527
16528
16529
16530
16531
16532
16533
16534
16535
16536
16537
16538
16539
16540
16541
16542
16543
16544
16545
16546
16547
16548
16549
16550
16551
16552
16553
16554
16555
16556
16557
16558
16559
16560
16561
16562
16563
16564
16565
16566
16567
16568
16569
16570
16571
16572
16573
16574
16575
16576
16577
16578
16579
16580
16581
16582
16583
16584
16585
16586
16587
16588
16589
16590
16591
16592
16593
16594
16595
16596
16597
16598
16599
16600
16601
16602
16603
16604
16605
16606
16607
16608
16609
16610
16611
16612
16613
16614
16615
16616
16617
16618
16619
16620
16621
16622
16623
16624
16625
16626
16627
16628
16629
16630
16631
16632
16633
16634
16635
16636
16637
16638
16639
16640
16641
16642
16643
16644
16645
16646
16647
16648
16649
16650
16651
16652
16653
16654
16655
16656
16657
16658
16659
16660
16661
16662
16663
16664
16665
16666
16667
16668
16669
16670
16671
16672
16673
16674
16675
16676
16677
16678
16679
16680
16681
16682
16683
16684
16685
16686
16687
16688
16689
16690
16691
16692
16693
16694
16695
16696
16697
16698
16699
16700
16701
16702
16703
16704
16705
16706
16707
16708
16709
16710
16711
16712
16713
16714
16715
16716
16717
16718
16719
16720
16721
16722
16723
16724
16725
16726
16727
16728
16729
16730
16731
16732
16733
16734
16735
16736
/* Everything about breakpoints, for GDB.

   Copyright (C) 1986-2016 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 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include "defs.h"
#include "arch-utils.h"
#include <ctype.h>
#include "hashtab.h"
#include "symtab.h"
#include "frame.h"
#include "breakpoint.h"
#include "tracepoint.h"
#include "gdbtypes.h"
#include "expression.h"
#include "gdbcore.h"
#include "gdbcmd.h"
#include "value.h"
#include "command.h"
#include "inferior.h"
#include "infrun.h"
#include "gdbthread.h"
#include "target.h"
#include "language.h"
#include "gdb-demangle.h"
#include "filenames.h"
#include "annotate.h"
#include "symfile.h"
#include "objfiles.h"
#include "source.h"
#include "linespec.h"
#include "completer.h"
#include "gdb.h"
#include "ui-out.h"
#include "cli/cli-script.h"
#include "block.h"
#include "solib.h"
#include "solist.h"
#include "observer.h"
#include "memattr.h"
#include "ada-lang.h"
#include "top.h"
#include "valprint.h"
#include "jit.h"
#include "parser-defs.h"
#include "gdb_regex.h"
#include "probe.h"
#include "cli/cli-utils.h"
#include "continuations.h"
#include "stack.h"
#include "skip.h"
#include "ax-gdb.h"
#include "dummy-frame.h"
#include "interps.h"
#include "format.h"
#include "location.h"
#include "thread-fsm.h"
#include "tid-parse.h"

/* readline include files */
#include "readline/readline.h"
#include "readline/history.h"

/* readline defines this.  */
#undef savestring

#include "mi/mi-common.h"
#include "extension.h"
#include <algorithm>

/* Enums for exception-handling support.  */
enum exception_event_kind
{
  EX_EVENT_THROW,
  EX_EVENT_RETHROW,
  EX_EVENT_CATCH
};

/* Prototypes for local functions.  */

static void enable_delete_command (char *, int);

static void enable_once_command (char *, int);

static void enable_count_command (char *, int);

static void disable_command (char *, int);

static void enable_command (char *, int);

static void map_breakpoint_numbers (const char *,
				    void (*) (struct breakpoint *,
					      void *),
				    void *);

static void ignore_command (char *, int);

static int breakpoint_re_set_one (void *);

static void breakpoint_re_set_default (struct breakpoint *);

static void
  create_sals_from_location_default (const struct event_location *location,
				     struct linespec_result *canonical,
				     enum bptype type_wanted);

static void create_breakpoints_sal_default (struct gdbarch *,
					    struct linespec_result *,
					    char *, char *, enum bptype,
					    enum bpdisp, int, int,
					    int,
					    const struct breakpoint_ops *,
					    int, int, int, unsigned);

static void decode_location_default (struct breakpoint *b,
				     const struct event_location *location,
				     struct program_space *search_pspace,
				     struct symtabs_and_lines *sals);

static void clear_command (char *, int);

static void catch_command (char *, int);

static int can_use_hardware_watchpoint (struct value *);

static void break_command_1 (char *, int, int);

static void mention (struct breakpoint *);

static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *,
							       enum bptype,
							       const struct breakpoint_ops *);
static struct bp_location *add_location_to_breakpoint (struct breakpoint *,
						       const struct symtab_and_line *);

/* This function is used in gdbtk sources and thus can not be made
   static.  */
struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch,
				       struct symtab_and_line,
				       enum bptype,
				       const struct breakpoint_ops *);

static struct breakpoint *
  momentary_breakpoint_from_master (struct breakpoint *orig,
				    enum bptype type,
				    const struct breakpoint_ops *ops,
				    int loc_enabled);

static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int);

static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch,
					    CORE_ADDR bpaddr,
                                            enum bptype bptype);

static void describe_other_breakpoints (struct gdbarch *,
					struct program_space *, CORE_ADDR,
					struct obj_section *, int);

static int watchpoint_locations_match (struct bp_location *loc1,
				       struct bp_location *loc2);

static int breakpoint_location_address_match (struct bp_location *bl,
					      struct address_space *aspace,
					      CORE_ADDR addr);

static int breakpoint_location_address_range_overlap (struct bp_location *,
						      struct address_space *,
						      CORE_ADDR, int);

static void breakpoints_info (char *, int);

static void watchpoints_info (char *, int);

static int breakpoint_1 (char *, int, 
			 int (*) (const struct breakpoint *));

static int breakpoint_cond_eval (void *);

static void cleanup_executing_breakpoints (void *);

static void commands_command (char *, int);

static void condition_command (char *, int);

static int remove_breakpoint (struct bp_location *);
static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason);

static enum print_stop_action print_bp_stop_message (bpstat bs);

static int watchpoint_check (void *);

static void maintenance_info_breakpoints (char *, int);

static int hw_breakpoint_used_count (void);

static int hw_watchpoint_use_count (struct breakpoint *);

static int hw_watchpoint_used_count_others (struct breakpoint *except,
					    enum bptype type,
					    int *other_type_used);

static void hbreak_command (char *, int);

static void thbreak_command (char *, int);

static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp,
				    int count);

static void stop_command (char *arg, int from_tty);

static void stopin_command (char *arg, int from_tty);

static void stopat_command (char *arg, int from_tty);

static void tcatch_command (char *arg, int from_tty);

static void free_bp_location (struct bp_location *loc);
static void incref_bp_location (struct bp_location *loc);
static void decref_bp_location (struct bp_location **loc);

static struct bp_location *allocate_bp_location (struct breakpoint *bpt);

/* update_global_location_list's modes of operation wrt to whether to
   insert locations now.  */
enum ugll_insert_mode
{
  /* Don't insert any breakpoint locations into the inferior, only
     remove already-inserted locations that no longer should be
     inserted.  Functions that delete a breakpoint or breakpoints
     should specify this mode, so that deleting a breakpoint doesn't
     have the side effect of inserting the locations of other
     breakpoints that are marked not-inserted, but should_be_inserted
     returns true on them.

     This behavior is useful is situations close to tear-down -- e.g.,
     after an exec, while the target still has execution, but
     breakpoint shadows of the previous executable image should *NOT*
     be restored to the new image; or before detaching, where the
     target still has execution and wants to delete breakpoints from
     GDB's lists, and all breakpoints had already been removed from
     the inferior.  */
  UGLL_DONT_INSERT,

  /* May insert breakpoints iff breakpoints_should_be_inserted_now
     claims breakpoints should be inserted now.  */
  UGLL_MAY_INSERT,

  /* Insert locations now, irrespective of
     breakpoints_should_be_inserted_now.  E.g., say all threads are
     stopped right now, and the user did "continue".  We need to
     insert breakpoints _before_ resuming the target, but
     UGLL_MAY_INSERT wouldn't insert them, because
     breakpoints_should_be_inserted_now returns false at that point,
     as no thread is running yet.  */
  UGLL_INSERT
};

static void update_global_location_list (enum ugll_insert_mode);

static void update_global_location_list_nothrow (enum ugll_insert_mode);

static int is_hardware_watchpoint (const struct breakpoint *bpt);

static void insert_breakpoint_locations (void);

static void tracepoints_info (char *, int);

static void delete_trace_command (char *, int);

static void enable_trace_command (char *, int);

static void disable_trace_command (char *, int);

static void trace_pass_command (char *, int);

static void set_tracepoint_count (int num);

static int is_masked_watchpoint (const struct breakpoint *b);

static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address);

/* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero
   otherwise.  */

static int strace_marker_p (struct breakpoint *b);

/* The breakpoint_ops structure to be inherited by all breakpoint_ops
   that are implemented on top of software or hardware breakpoints
   (user breakpoints, internal and momentary breakpoints, etc.).  */
static struct breakpoint_ops bkpt_base_breakpoint_ops;

/* Internal breakpoints class type.  */
static struct breakpoint_ops internal_breakpoint_ops;

/* Momentary breakpoints class type.  */
static struct breakpoint_ops momentary_breakpoint_ops;

/* Momentary breakpoints for bp_longjmp and bp_exception class type.  */
static struct breakpoint_ops longjmp_breakpoint_ops;

/* The breakpoint_ops structure to be used in regular user created
   breakpoints.  */
struct breakpoint_ops bkpt_breakpoint_ops;

/* Breakpoints set on probes.  */
static struct breakpoint_ops bkpt_probe_breakpoint_ops;

/* Dynamic printf class type.  */
struct breakpoint_ops dprintf_breakpoint_ops;

/* The style in which to perform a dynamic printf.  This is a user
   option because different output options have different tradeoffs;
   if GDB does the printing, there is better error handling if there
   is a problem with any of the arguments, but using an inferior
   function lets you have special-purpose printers and sending of
   output to the same place as compiled-in print functions.  */

static const char dprintf_style_gdb[] = "gdb";
static const char dprintf_style_call[] = "call";
static const char dprintf_style_agent[] = "agent";
static const char *const dprintf_style_enums[] = {
  dprintf_style_gdb,
  dprintf_style_call,
  dprintf_style_agent,
  NULL
};
static const char *dprintf_style = dprintf_style_gdb;

/* The function to use for dynamic printf if the preferred style is to
   call into the inferior.  The value is simply a string that is
   copied into the command, so it can be anything that GDB can
   evaluate to a callable address, not necessarily a function name.  */

static char *dprintf_function = "";

/* The channel to use for dynamic printf if the preferred style is to
   call into the inferior; if a nonempty string, it will be passed to
   the call as the first argument, with the format string as the
   second.  As with the dprintf function, this can be anything that
   GDB knows how to evaluate, so in addition to common choices like
   "stderr", this could be an app-specific expression like
   "mystreams[curlogger]".  */

static char *dprintf_channel = "";

/* True if dprintf commands should continue to operate even if GDB
   has disconnected.  */
static int disconnected_dprintf = 1;

/* A reference-counted struct command_line.  This lets multiple
   breakpoints share a single command list.  */
struct counted_command_line
{
  /* The reference count.  */
  int refc;

  /* The command list.  */
  struct command_line *commands;
};

struct command_line *
breakpoint_commands (struct breakpoint *b)
{
  return b->commands ? b->commands->commands : NULL;
}

/* Flag indicating that a command has proceeded the inferior past the
   current breakpoint.  */

static int breakpoint_proceeded;

const char *
bpdisp_text (enum bpdisp disp)
{
  /* NOTE: the following values are a part of MI protocol and
     represent values of 'disp' field returned when inferior stops at
     a breakpoint.  */
  static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"};

  return bpdisps[(int) disp];
}

/* Prototypes for exported functions.  */
/* If FALSE, gdb will not use hardware support for watchpoints, even
   if such is available.  */
static int can_use_hw_watchpoints;

static void
show_can_use_hw_watchpoints (struct ui_file *file, int from_tty,
			     struct cmd_list_element *c,
			     const char *value)
{
  fprintf_filtered (file,
		    _("Debugger's willingness to use "
		      "watchpoint hardware is %s.\n"),
		    value);
}

/* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints.
   If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints
   for unrecognized breakpoint locations.
   If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized.  */
static enum auto_boolean pending_break_support;
static void
show_pending_break_support (struct ui_file *file, int from_tty,
			    struct cmd_list_element *c,
			    const char *value)
{
  fprintf_filtered (file,
		    _("Debugger's behavior regarding "
		      "pending breakpoints is %s.\n"),
		    value);
}

/* If 1, gdb will automatically use hardware breakpoints for breakpoints
   set with "break" but falling in read-only memory.
   If 0, gdb will warn about such breakpoints, but won't automatically
   use hardware breakpoints.  */
static int automatic_hardware_breakpoints;
static void
show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty,
				     struct cmd_list_element *c,
				     const char *value)
{
  fprintf_filtered (file,
		    _("Automatic usage of hardware breakpoints is %s.\n"),
		    value);
}

/* If on, GDB keeps breakpoints inserted even if the inferior is
   stopped, and immediately inserts any new breakpoints as soon as
   they're created.  If off (default), GDB keeps breakpoints off of
   the target as long as possible.  That is, it delays inserting
   breakpoints until the next resume, and removes them again when the
   target fully stops.  This is a bit safer in case GDB crashes while
   processing user input.  */
static int always_inserted_mode = 0;

static void
show_always_inserted_mode (struct ui_file *file, int from_tty,
		     struct cmd_list_element *c, const char *value)
{
  fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"),
		    value);
}

/* See breakpoint.h.  */

int
breakpoints_should_be_inserted_now (void)
{
  if (gdbarch_has_global_breakpoints (target_gdbarch ()))
    {
      /* If breakpoints are global, they should be inserted even if no
	 thread under gdb's control is running, or even if there are
	 no threads under GDB's control yet.  */
      return 1;
    }
  else if (target_has_execution)
    {
      struct thread_info *tp;

      if (always_inserted_mode)
	{
	  /* The user wants breakpoints inserted even if all threads
	     are stopped.  */
	  return 1;
	}

      if (threads_are_executing ())
	return 1;

      /* Don't remove breakpoints yet if, even though all threads are
	 stopped, we still have events to process.  */
      ALL_NON_EXITED_THREADS (tp)
	if (tp->resumed
	    && tp->suspend.waitstatus_pending_p)
	  return 1;
    }
  return 0;
}

static const char condition_evaluation_both[] = "host or target";

/* Modes for breakpoint condition evaluation.  */
static const char condition_evaluation_auto[] = "auto";
static const char condition_evaluation_host[] = "host";
static const char condition_evaluation_target[] = "target";
static const char *const condition_evaluation_enums[] = {
  condition_evaluation_auto,
  condition_evaluation_host,
  condition_evaluation_target,
  NULL
};

/* Global that holds the current mode for breakpoint condition evaluation.  */
static const char *condition_evaluation_mode_1 = condition_evaluation_auto;

/* Global that we use to display information to the user (gets its value from
   condition_evaluation_mode_1.  */
static const char *condition_evaluation_mode = condition_evaluation_auto;

/* Translate a condition evaluation mode MODE into either "host"
   or "target".  This is used mostly to translate from "auto" to the
   real setting that is being used.  It returns the translated
   evaluation mode.  */

static const char *
translate_condition_evaluation_mode (const char *mode)
{
  if (mode == condition_evaluation_auto)
    {
      if (target_supports_evaluation_of_breakpoint_conditions ())
	return condition_evaluation_target;
      else
	return condition_evaluation_host;
    }
  else
    return mode;
}

/* Discovers what condition_evaluation_auto translates to.  */

static const char *
breakpoint_condition_evaluation_mode (void)
{
  return translate_condition_evaluation_mode (condition_evaluation_mode);
}

/* Return true if GDB should evaluate breakpoint conditions or false
   otherwise.  */

static int
gdb_evaluates_breakpoint_condition_p (void)
{
  const char *mode = breakpoint_condition_evaluation_mode ();

  return (mode == condition_evaluation_host);
}

void _initialize_breakpoint (void);

/* Are we executing breakpoint commands?  */
static int executing_breakpoint_commands;

/* Are overlay event breakpoints enabled? */
static int overlay_events_enabled;

/* See description in breakpoint.h. */
int target_exact_watchpoints = 0;

/* Walk the following statement or block through all breakpoints.
   ALL_BREAKPOINTS_SAFE does so even if the statement deletes the
   current breakpoint.  */

#define ALL_BREAKPOINTS(B)  for (B = breakpoint_chain; B; B = B->next)

#define ALL_BREAKPOINTS_SAFE(B,TMP)	\
	for (B = breakpoint_chain;	\
	     B ? (TMP=B->next, 1): 0;	\
	     B = TMP)

/* Similar iterator for the low-level breakpoints.  SAFE variant is
   not provided so update_global_location_list must not be called
   while executing the block of ALL_BP_LOCATIONS.  */

#define ALL_BP_LOCATIONS(B,BP_TMP)					\
	for (BP_TMP = bp_location;					\
	     BP_TMP < bp_location + bp_location_count && (B = *BP_TMP);	\
	     BP_TMP++)

/* Iterates through locations with address ADDRESS for the currently selected
   program space.  BP_LOCP_TMP points to each object.  BP_LOCP_START points
   to where the loop should start from.
   If BP_LOCP_START is a NULL pointer, the macro automatically seeks the
   appropriate location to start with.  */

#define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS)	\
	for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \
	     BP_LOCP_TMP = BP_LOCP_START;				\
	     BP_LOCP_START						\
	     && (BP_LOCP_TMP < bp_location + bp_location_count		\
	     && (*BP_LOCP_TMP)->address == ADDRESS);			\
	     BP_LOCP_TMP++)

/* Iterator for tracepoints only.  */

#define ALL_TRACEPOINTS(B)  \
  for (B = breakpoint_chain; B; B = B->next)  \
    if (is_tracepoint (B))

/* Chains of all breakpoints defined.  */

struct breakpoint *breakpoint_chain;

/* Array is sorted by bp_location_compare - primarily by the ADDRESS.  */

static struct bp_location **bp_location;

/* Number of elements of BP_LOCATION.  */

static unsigned bp_location_count;

/* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and
   ADDRESS for the current elements of BP_LOCATION which get a valid
   result from bp_location_has_shadow.  You can use it for roughly
   limiting the subrange of BP_LOCATION to scan for shadow bytes for
   an address you need to read.  */

static CORE_ADDR bp_location_placed_address_before_address_max;

/* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS
   + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of
   BP_LOCATION which get a valid result from bp_location_has_shadow.
   You can use it for roughly limiting the subrange of BP_LOCATION to
   scan for shadow bytes for an address you need to read.  */

static CORE_ADDR bp_location_shadow_len_after_address_max;

/* The locations that no longer correspond to any breakpoint, unlinked
   from bp_location array, but for which a hit may still be reported
   by a target.  */
VEC(bp_location_p) *moribund_locations = NULL;

/* Number of last breakpoint made.  */

static int breakpoint_count;

/* The value of `breakpoint_count' before the last command that
   created breakpoints.  If the last (break-like) command created more
   than one breakpoint, then the difference between BREAKPOINT_COUNT
   and PREV_BREAKPOINT_COUNT is more than one.  */
static int prev_breakpoint_count;

/* Number of last tracepoint made.  */

static int tracepoint_count;

static struct cmd_list_element *breakpoint_set_cmdlist;
static struct cmd_list_element *breakpoint_show_cmdlist;
struct cmd_list_element *save_cmdlist;

/* See declaration at breakpoint.h.  */

struct breakpoint *
breakpoint_find_if (int (*func) (struct breakpoint *b, void *d),
		    void *user_data)
{
  struct breakpoint *b = NULL;

  ALL_BREAKPOINTS (b)
    {
      if (func (b, user_data) != 0)
	break;
    }

  return b;
}

/* Return whether a breakpoint is an active enabled breakpoint.  */
static int
breakpoint_enabled (struct breakpoint *b)
{
  return (b->enable_state == bp_enabled);
}

/* Set breakpoint count to NUM.  */

static void
set_breakpoint_count (int num)
{
  prev_breakpoint_count = breakpoint_count;
  breakpoint_count = num;
  set_internalvar_integer (lookup_internalvar ("bpnum"), num);
}

/* Used by `start_rbreak_breakpoints' below, to record the current
   breakpoint count before "rbreak" creates any breakpoint.  */
static int rbreak_start_breakpoint_count;

/* Called at the start an "rbreak" command to record the first
   breakpoint made.  */

void
start_rbreak_breakpoints (void)
{
  rbreak_start_breakpoint_count = breakpoint_count;
}

/* Called at the end of an "rbreak" command to record the last
   breakpoint made.  */

void
end_rbreak_breakpoints (void)
{
  prev_breakpoint_count = rbreak_start_breakpoint_count;
}

/* Used in run_command to zero the hit count when a new run starts.  */

void
clear_breakpoint_hit_counts (void)
{
  struct breakpoint *b;

  ALL_BREAKPOINTS (b)
    b->hit_count = 0;
}

/* Allocate a new counted_command_line with reference count of 1.
   The new structure owns COMMANDS.  */

static struct counted_command_line *
alloc_counted_command_line (struct command_line *commands)
{
  struct counted_command_line *result = XNEW (struct counted_command_line);

  result->refc = 1;
  result->commands = commands;

  return result;
}

/* Increment reference count.  This does nothing if CMD is NULL.  */

static void
incref_counted_command_line (struct counted_command_line *cmd)
{
  if (cmd)
    ++cmd->refc;
}

/* Decrement reference count.  If the reference count reaches 0,
   destroy the counted_command_line.  Sets *CMDP to NULL.  This does
   nothing if *CMDP is NULL.  */

static void
decref_counted_command_line (struct counted_command_line **cmdp)
{
  if (*cmdp)
    {
      if (--(*cmdp)->refc == 0)
	{
	  free_command_lines (&(*cmdp)->commands);
	  xfree (*cmdp);
	}
      *cmdp = NULL;
    }
}

/* A cleanup function that calls decref_counted_command_line.  */

static void
do_cleanup_counted_command_line (void *arg)
{
  decref_counted_command_line ((struct counted_command_line **) arg);
}

/* Create a cleanup that calls decref_counted_command_line on the
   argument.  */

static struct cleanup *
make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp)
{
  return make_cleanup (do_cleanup_counted_command_line, cmdp);
}


/* Return the breakpoint with the specified number, or NULL
   if the number does not refer to an existing breakpoint.  */

struct breakpoint *
get_breakpoint (int num)
{
  struct breakpoint *b;

  ALL_BREAKPOINTS (b)
    if (b->number == num)
      return b;
  
  return NULL;
}



/* Mark locations as "conditions have changed" in case the target supports
   evaluating conditions on its side.  */

static void
mark_breakpoint_modified (struct breakpoint *b)
{
  struct bp_location *loc;

  /* This is only meaningful if the target is
     evaluating conditions and if the user has
     opted for condition evaluation on the target's
     side.  */
  if (gdb_evaluates_breakpoint_condition_p ()
      || !target_supports_evaluation_of_breakpoint_conditions ())
    return;

  if (!is_breakpoint (b))
    return;

  for (loc = b->loc; loc; loc = loc->next)
    loc->condition_changed = condition_modified;
}

/* Mark location as "conditions have changed" in case the target supports
   evaluating conditions on its side.  */

static void
mark_breakpoint_location_modified (struct bp_location *loc)
{
  /* This is only meaningful if the target is
     evaluating conditions and if the user has
     opted for condition evaluation on the target's
     side.  */
  if (gdb_evaluates_breakpoint_condition_p ()
      || !target_supports_evaluation_of_breakpoint_conditions ())

    return;

  if (!is_breakpoint (loc->owner))
    return;

  loc->condition_changed = condition_modified;
}

/* Sets the condition-evaluation mode using the static global
   condition_evaluation_mode.  */

static void
set_condition_evaluation_mode (char *args, int from_tty,
			       struct cmd_list_element *c)
{
  const char *old_mode, *new_mode;

  if ((condition_evaluation_mode_1 == condition_evaluation_target)
      && !target_supports_evaluation_of_breakpoint_conditions ())
    {
      condition_evaluation_mode_1 = condition_evaluation_mode;
      warning (_("Target does not support breakpoint condition evaluation.\n"
		 "Using host evaluation mode instead."));
      return;
    }

  new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1);
  old_mode = translate_condition_evaluation_mode (condition_evaluation_mode);

  /* Flip the switch.  Flip it even if OLD_MODE == NEW_MODE as one of the
     settings was "auto".  */
  condition_evaluation_mode = condition_evaluation_mode_1;

  /* Only update the mode if the user picked a different one.  */
  if (new_mode != old_mode)
    {
      struct bp_location *loc, **loc_tmp;
      /* If the user switched to a different evaluation mode, we
	 need to synch the changes with the target as follows:

	 "host" -> "target": Send all (valid) conditions to the target.
	 "target" -> "host": Remove all the conditions from the target.
      */

      if (new_mode == condition_evaluation_target)
	{
	  /* Mark everything modified and synch conditions with the
	     target.  */
	  ALL_BP_LOCATIONS (loc, loc_tmp)
	    mark_breakpoint_location_modified (loc);
  	}
      else
	{
	  /* Manually mark non-duplicate locations to synch conditions
	     with the target.  We do this to remove all the conditions the
	     target knows about.  */
	  ALL_BP_LOCATIONS (loc, loc_tmp)
	    if (is_breakpoint (loc->owner) && loc->inserted)
	      loc->needs_update = 1;
	}

      /* Do the update.  */
      update_global_location_list (UGLL_MAY_INSERT);
    }

  return;
}

/* Shows the current mode of breakpoint condition evaluation.  Explicitly shows
   what "auto" is translating to.  */

static void
show_condition_evaluation_mode (struct ui_file *file, int from_tty,
				struct cmd_list_element *c, const char *value)
{
  if (condition_evaluation_mode == condition_evaluation_auto)
    fprintf_filtered (file,
		      _("Breakpoint condition evaluation "
			"mode is %s (currently %s).\n"),
		      value,
		      breakpoint_condition_evaluation_mode ());
  else
    fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"),
		      value);
}

/* A comparison function for bp_location AP and BP that is used by
   bsearch.  This comparison function only cares about addresses, unlike
   the more general bp_location_compare function.  */

static int
bp_location_compare_addrs (const void *ap, const void *bp)
{
  const struct bp_location *a = *(const struct bp_location **) ap;
  const struct bp_location *b = *(const struct bp_location **) bp;

  if (a->address == b->address)
    return 0;
  else
    return ((a->address > b->address) - (a->address < b->address));
}

/* Helper function to skip all bp_locations with addresses
   less than ADDRESS.  It returns the first bp_location that
   is greater than or equal to ADDRESS.  If none is found, just
   return NULL.  */

static struct bp_location **
get_first_locp_gte_addr (CORE_ADDR address)
{
  struct bp_location dummy_loc;
  struct bp_location *dummy_locp = &dummy_loc;
  struct bp_location **locp_found = NULL;

  /* Initialize the dummy location's address field.  */
  memset (&dummy_loc, 0, sizeof (struct bp_location));
  dummy_loc.address = address;

  /* Find a close match to the first location at ADDRESS.  */
  locp_found = ((struct bp_location **)
		bsearch (&dummy_locp, bp_location, bp_location_count,
			 sizeof (struct bp_location **),
			 bp_location_compare_addrs));

  /* Nothing was found, nothing left to do.  */
  if (locp_found == NULL)
    return NULL;

  /* We may have found a location that is at ADDRESS but is not the first in the
     location's list.  Go backwards (if possible) and locate the first one.  */
  while ((locp_found - 1) >= bp_location
	 && (*(locp_found - 1))->address == address)
    locp_found--;

  return locp_found;
}

void
set_breakpoint_condition (struct breakpoint *b, const char *exp,
			  int from_tty)
{
  xfree (b->cond_string);
  b->cond_string = NULL;

  if (is_watchpoint (b))
    {
      struct watchpoint *w = (struct watchpoint *) b;

      w->cond_exp.reset ();
    }
  else
    {
      struct bp_location *loc;

      for (loc = b->loc; loc; loc = loc->next)
	{
	  loc->cond.reset ();

	  /* No need to free the condition agent expression
	     bytecode (if we have one).  We will handle this
	     when we go through update_global_location_list.  */
	}
    }

  if (*exp == 0)
    {
      if (from_tty)
	printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number);
    }
  else
    {
      const char *arg = exp;

      /* I don't know if it matters whether this is the string the user
	 typed in or the decompiled expression.  */
      b->cond_string = xstrdup (arg);
      b->condition_not_parsed = 0;

      if (is_watchpoint (b))
	{
	  struct watchpoint *w = (struct watchpoint *) b;

	  innermost_block = NULL;
	  arg = exp;
	  w->cond_exp = parse_exp_1 (&arg, 0, 0, 0);
	  if (*arg)
	    error (_("Junk at end of expression"));
	  w->cond_exp_valid_block = innermost_block;
	}
      else
	{
	  struct bp_location *loc;

	  for (loc = b->loc; loc; loc = loc->next)
	    {
	      arg = exp;
	      loc->cond =
		parse_exp_1 (&arg, loc->address,
			     block_for_pc (loc->address), 0);
	      if (*arg)
		error (_("Junk at end of expression"));
	    }
	}
    }
  mark_breakpoint_modified (b);

  observer_notify_breakpoint_modified (b);
}

/* Completion for the "condition" command.  */

static VEC (char_ptr) *
condition_completer (struct cmd_list_element *cmd,
		     const char *text, const char *word)
{
  const char *space;

  text = skip_spaces_const (text);
  space = skip_to_space_const (text);
  if (*space == '\0')
    {
      int len;
      struct breakpoint *b;
      VEC (char_ptr) *result = NULL;

      if (text[0] == '$')
	{
	  /* We don't support completion of history indices.  */
	  if (isdigit (text[1]))
	    return NULL;
	  return complete_internalvar (&text[1]);
	}

      /* We're completing the breakpoint number.  */
      len = strlen (text);

      ALL_BREAKPOINTS (b)
	{
	  char number[50];

	  xsnprintf (number, sizeof (number), "%d", b->number);

	  if (strncmp (number, text, len) == 0)
	    VEC_safe_push (char_ptr, result, xstrdup (number));
	}

      return result;
    }

  /* We're completing the expression part.  */
  text = skip_spaces_const (space);
  return expression_completer (cmd, text, word);
}

/* condition N EXP -- set break condition of breakpoint N to EXP.  */

static void
condition_command (char *arg, int from_tty)
{
  struct breakpoint *b;
  char *p;
  int bnum;

  if (arg == 0)
    error_no_arg (_("breakpoint number"));

  p = arg;
  bnum = get_number (&p);
  if (bnum == 0)
    error (_("Bad breakpoint argument: '%s'"), arg);

  ALL_BREAKPOINTS (b)
    if (b->number == bnum)
      {
	/* Check if this breakpoint has a "stop" method implemented in an
	   extension language.  This method and conditions entered into GDB
	   from the CLI are mutually exclusive.  */
	const struct extension_language_defn *extlang
	  = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE);

	if (extlang != NULL)
	  {
	    error (_("Only one stop condition allowed.  There is currently"
		     " a %s stop condition defined for this breakpoint."),
		   ext_lang_capitalized_name (extlang));
	  }
	set_breakpoint_condition (b, p, from_tty);

	if (is_breakpoint (b))
	  update_global_location_list (UGLL_MAY_INSERT);

	return;
      }

  error (_("No breakpoint number %d."), bnum);
}

/* Check that COMMAND do not contain commands that are suitable
   only for tracepoints and not suitable for ordinary breakpoints.
   Throw if any such commands is found.  */

static void
check_no_tracepoint_commands (struct command_line *commands)
{
  struct command_line *c;

  for (c = commands; c; c = c->next)
    {
      int i;

      if (c->control_type == while_stepping_control)
	error (_("The 'while-stepping' command can "
		 "only be used for tracepoints"));

      for (i = 0; i < c->body_count; ++i)
	check_no_tracepoint_commands ((c->body_list)[i]);

      /* Not that command parsing removes leading whitespace and comment
	 lines and also empty lines.  So, we only need to check for
	 command directly.  */
      if (strstr (c->line, "collect ") == c->line)
	error (_("The 'collect' command can only be used for tracepoints"));

      if (strstr (c->line, "teval ") == c->line)
	error (_("The 'teval' command can only be used for tracepoints"));
    }
}

/* Encapsulate tests for different types of tracepoints.  */

static int
is_tracepoint_type (enum bptype type)
{
  return (type == bp_tracepoint
	  || type == bp_fast_tracepoint
	  || type == bp_static_tracepoint);
}

int
is_tracepoint (const struct breakpoint *b)
{
  return is_tracepoint_type (b->type);
}

/* A helper function that validates that COMMANDS are valid for a
   breakpoint.  This function will throw an exception if a problem is
   found.  */

static void
validate_commands_for_breakpoint (struct breakpoint *b,
				  struct command_line *commands)
{
  if (is_tracepoint (b))
    {
      struct tracepoint *t = (struct tracepoint *) b;
      struct command_line *c;
      struct command_line *while_stepping = 0;

      /* Reset the while-stepping step count.  The previous commands
         might have included a while-stepping action, while the new
         ones might not.  */
      t->step_count = 0;

      /* We need to verify that each top-level element of commands is
	 valid for tracepoints, that there's at most one
	 while-stepping element, and that the while-stepping's body
	 has valid tracing commands excluding nested while-stepping.
	 We also need to validate the tracepoint action line in the
	 context of the tracepoint --- validate_actionline actually
	 has side effects, like setting the tracepoint's
	 while-stepping STEP_COUNT, in addition to checking if the
	 collect/teval actions parse and make sense in the
	 tracepoint's context.  */
      for (c = commands; c; c = c->next)
	{
	  if (c->control_type == while_stepping_control)
	    {
	      if (b->type == bp_fast_tracepoint)
		error (_("The 'while-stepping' command "
			 "cannot be used for fast tracepoint"));
	      else if (b->type == bp_static_tracepoint)
		error (_("The 'while-stepping' command "
			 "cannot be used for static tracepoint"));

	      if (while_stepping)
		error (_("The 'while-stepping' command "
			 "can be used only once"));
	      else
		while_stepping = c;
	    }

	  validate_actionline (c->line, b);
	}
      if (while_stepping)
	{
	  struct command_line *c2;

	  gdb_assert (while_stepping->body_count == 1);
	  c2 = while_stepping->body_list[0];
	  for (; c2; c2 = c2->next)
	    {
	      if (c2->control_type == while_stepping_control)
		error (_("The 'while-stepping' command cannot be nested"));
	    }
	}
    }
  else
    {
      check_no_tracepoint_commands (commands);
    }
}

/* Return a vector of all the static tracepoints set at ADDR.  The
   caller is responsible for releasing the vector.  */

VEC(breakpoint_p) *
static_tracepoints_here (CORE_ADDR addr)
{
  struct breakpoint *b;
  VEC(breakpoint_p) *found = 0;
  struct bp_location *loc;

  ALL_BREAKPOINTS (b)
    if (b->type == bp_static_tracepoint)
      {
	for (loc = b->loc; loc; loc = loc->next)
	  if (loc->address == addr)
	    VEC_safe_push(breakpoint_p, found, b);
      }

  return found;
}

/* Set the command list of B to COMMANDS.  If breakpoint is tracepoint,
   validate that only allowed commands are included.  */

void
breakpoint_set_commands (struct breakpoint *b, 
			 struct command_line *commands)
{
  validate_commands_for_breakpoint (b, commands);

  decref_counted_command_line (&b->commands);
  b->commands = alloc_counted_command_line (commands);
  observer_notify_breakpoint_modified (b);
}

/* Set the internal `silent' flag on the breakpoint.  Note that this
   is not the same as the "silent" that may appear in the breakpoint's
   commands.  */

void
breakpoint_set_silent (struct breakpoint *b, int silent)
{
  int old_silent = b->silent;

  b->silent = silent;
  if (old_silent != silent)
    observer_notify_breakpoint_modified (b);
}

/* Set the thread for this breakpoint.  If THREAD is -1, make the
   breakpoint work for any thread.  */

void
breakpoint_set_thread (struct breakpoint *b, int thread)
{
  int old_thread = b->thread;

  b->thread = thread;
  if (old_thread != thread)
    observer_notify_breakpoint_modified (b);
}

/* Set the task for this breakpoint.  If TASK is 0, make the
   breakpoint work for any task.  */

void
breakpoint_set_task (struct breakpoint *b, int task)
{
  int old_task = b->task;

  b->task = task;
  if (old_task != task)
    observer_notify_breakpoint_modified (b);
}

void
check_tracepoint_command (char *line, void *closure)
{
  struct breakpoint *b = (struct breakpoint *) closure;

  validate_actionline (line, b);
}

/* A structure used to pass information through
   map_breakpoint_numbers.  */

struct commands_info
{
  /* True if the command was typed at a tty.  */
  int from_tty;

  /* The breakpoint range spec.  */
  const char *arg;

  /* Non-NULL if the body of the commands are being read from this
     already-parsed command.  */
  struct command_line *control;

  /* The command lines read from the user, or NULL if they have not
     yet been read.  */
  struct counted_command_line *cmd;
};

/* A callback for map_breakpoint_numbers that sets the commands for
   commands_command.  */

static void
do_map_commands_command (struct breakpoint *b, void *data)
{
  struct commands_info *info = (struct commands_info *) data;

  if (info->cmd == NULL)
    {
      struct command_line *l;

      if (info->control != NULL)
	l = copy_command_lines (info->control->body_list[0]);
      else
	{
	  struct cleanup *old_chain;
	  char *str;

	  str = xstrprintf (_("Type commands for breakpoint(s) "
			      "%s, one per line."),
			    info->arg);

	  old_chain = make_cleanup (xfree, str);

	  l = read_command_lines (str,
				  info->from_tty, 1,
				  (is_tracepoint (b)
				   ? check_tracepoint_command : 0),
				  b);

	  do_cleanups (old_chain);
	}

      info->cmd = alloc_counted_command_line (l);
    }

  /* If a breakpoint was on the list more than once, we don't need to
     do anything.  */
  if (b->commands != info->cmd)
    {
      validate_commands_for_breakpoint (b, info->cmd->commands);
      incref_counted_command_line (info->cmd);
      decref_counted_command_line (&b->commands);
      b->commands = info->cmd;
      observer_notify_breakpoint_modified (b);
    }
}

static void
commands_command_1 (const char *arg, int from_tty,
		    struct command_line *control)
{
  struct cleanup *cleanups;
  struct commands_info info;

  info.from_tty = from_tty;
  info.control = control;
  info.cmd = NULL;
  /* If we read command lines from the user, then `info' will hold an
     extra reference to the commands that we must clean up.  */
  cleanups = make_cleanup_decref_counted_command_line (&info.cmd);

  std::string new_arg;

  if (arg == NULL || !*arg)
    {
      if (breakpoint_count - prev_breakpoint_count > 1)
	new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1,
				 breakpoint_count);
      else if (breakpoint_count > 0)
	new_arg = string_printf ("%d", breakpoint_count);
    }
  else
    new_arg = arg;

  info.arg = new_arg.c_str ();

  map_breakpoint_numbers (info.arg, do_map_commands_command, &info);

  if (info.cmd == NULL)
    error (_("No breakpoints specified."));

  do_cleanups (cleanups);
}

static void
commands_command (char *arg, int from_tty)
{
  commands_command_1 (arg, from_tty, NULL);
}

/* Like commands_command, but instead of reading the commands from
   input stream, takes them from an already parsed command structure.

   This is used by cli-script.c to DTRT with breakpoint commands
   that are part of if and while bodies.  */
enum command_control_type
commands_from_control_command (const char *arg, struct command_line *cmd)
{
  commands_command_1 (arg, 0, cmd);
  return simple_control;
}

/* Return non-zero if BL->TARGET_INFO contains valid information.  */

static int
bp_location_has_shadow (struct bp_location *bl)
{
  if (bl->loc_type != bp_loc_software_breakpoint)
    return 0;
  if (!bl->inserted)
    return 0;
  if (bl->target_info.shadow_len == 0)
    /* BL isn't valid, or doesn't shadow memory.  */
    return 0;
  return 1;
}

/* Update BUF, which is LEN bytes read from the target address
   MEMADDR, by replacing a memory breakpoint with its shadowed
   contents.

   If READBUF is not NULL, this buffer must not overlap with the of
   the breakpoint location's shadow_contents buffer.  Otherwise, a
   failed assertion internal error will be raised.  */

static void
one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf,
			    const gdb_byte *writebuf_org,
			    ULONGEST memaddr, LONGEST len,
			    struct bp_target_info *target_info,
			    struct gdbarch *gdbarch)
{
  /* Now do full processing of the found relevant range of elements.  */
  CORE_ADDR bp_addr = 0;
  int bp_size = 0;
  int bptoffset = 0;

  if (!breakpoint_address_match (target_info->placed_address_space, 0,
				 current_program_space->aspace, 0))
    {
      /* The breakpoint is inserted in a different address space.  */
      return;
    }

  /* Addresses and length of the part of the breakpoint that
     we need to copy.  */
  bp_addr = target_info->placed_address;
  bp_size = target_info->shadow_len;

  if (bp_addr + bp_size <= memaddr)
    {
      /* The breakpoint is entirely before the chunk of memory we are
	 reading.  */
      return;
    }

  if (bp_addr >= memaddr + len)
    {
      /* The breakpoint is entirely after the chunk of memory we are
	 reading.  */
      return;
    }

  /* Offset within shadow_contents.  */
  if (bp_addr < memaddr)
    {
      /* Only copy the second part of the breakpoint.  */
      bp_size -= memaddr - bp_addr;
      bptoffset = memaddr - bp_addr;
      bp_addr = memaddr;
    }

  if (bp_addr + bp_size > memaddr + len)
    {
      /* Only copy the first part of the breakpoint.  */
      bp_size -= (bp_addr + bp_size) - (memaddr + len);
    }

  if (readbuf != NULL)
    {
      /* Verify that the readbuf buffer does not overlap with the
	 shadow_contents buffer.  */
      gdb_assert (target_info->shadow_contents >= readbuf + len
		  || readbuf >= (target_info->shadow_contents
				 + target_info->shadow_len));

      /* Update the read buffer with this inserted breakpoint's
	 shadow.  */
      memcpy (readbuf + bp_addr - memaddr,
	      target_info->shadow_contents + bptoffset, bp_size);
    }
  else
    {
      const unsigned char *bp;
      CORE_ADDR addr = target_info->reqstd_address;
      int placed_size;

      /* Update the shadow with what we want to write to memory.  */
      memcpy (target_info->shadow_contents + bptoffset,
	      writebuf_org + bp_addr - memaddr, bp_size);

      /* Determine appropriate breakpoint contents and size for this
	 address.  */
      bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size);

      /* Update the final write buffer with this inserted
	 breakpoint's INSN.  */
      memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size);
    }
}

/* Update BUF, which is LEN bytes read from the target address MEMADDR,
   by replacing any memory breakpoints with their shadowed contents.

   If READBUF is not NULL, this buffer must not overlap with any of
   the breakpoint location's shadow_contents buffers.  Otherwise,
   a failed assertion internal error will be raised.

   The range of shadowed area by each bp_location is:
     bl->address - bp_location_placed_address_before_address_max
     up to bl->address + bp_location_shadow_len_after_address_max
   The range we were requested to resolve shadows for is:
     memaddr ... memaddr + len
   Thus the safe cutoff boundaries for performance optimization are
     memaddr + len <= (bl->address
		       - bp_location_placed_address_before_address_max)
   and:
     bl->address + bp_location_shadow_len_after_address_max <= memaddr  */

void
breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf,
			const gdb_byte *writebuf_org,
			ULONGEST memaddr, LONGEST len)
{
  /* Left boundary, right boundary and median element of our binary
     search.  */
  unsigned bc_l, bc_r, bc;

  /* Find BC_L which is a leftmost element which may affect BUF
     content.  It is safe to report lower value but a failure to
     report higher one.  */

  bc_l = 0;
  bc_r = bp_location_count;
  while (bc_l + 1 < bc_r)
    {
      struct bp_location *bl;

      bc = (bc_l + bc_r) / 2;
      bl = bp_location[bc];

      /* Check first BL->ADDRESS will not overflow due to the added
	 constant.  Then advance the left boundary only if we are sure
	 the BC element can in no way affect the BUF content (MEMADDR
	 to MEMADDR + LEN range).

	 Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety
	 offset so that we cannot miss a breakpoint with its shadow
	 range tail still reaching MEMADDR.  */

      if ((bl->address + bp_location_shadow_len_after_address_max
	   >= bl->address)
	  && (bl->address + bp_location_shadow_len_after_address_max
	      <= memaddr))
	bc_l = bc;
      else
	bc_r = bc;
    }

  /* Due to the binary search above, we need to make sure we pick the
     first location that's at BC_L's address.  E.g., if there are
     multiple locations at the same address, BC_L may end up pointing
     at a duplicate location, and miss the "master"/"inserted"
     location.  Say, given locations L1, L2 and L3 at addresses A and
     B:

      L1@A, L2@A, L3@B, ...

     BC_L could end up pointing at location L2, while the "master"
     location could be L1.  Since the `loc->inserted' flag is only set
     on "master" locations, we'd forget to restore the shadow of L1
     and L2.  */
  while (bc_l > 0
	 && bp_location[bc_l]->address == bp_location[bc_l - 1]->address)
    bc_l--;

  /* Now do full processing of the found relevant range of elements.  */

  for (bc = bc_l; bc < bp_location_count; bc++)
  {
    struct bp_location *bl = bp_location[bc];

    /* bp_location array has BL->OWNER always non-NULL.  */
    if (bl->owner->type == bp_none)
      warning (_("reading through apparently deleted breakpoint #%d?"),
	       bl->owner->number);

    /* Performance optimization: any further element can no longer affect BUF
       content.  */

    if (bl->address >= bp_location_placed_address_before_address_max
        && memaddr + len <= (bl->address
			     - bp_location_placed_address_before_address_max))
      break;

    if (!bp_location_has_shadow (bl))
      continue;

    one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org,
				memaddr, len, &bl->target_info, bl->gdbarch);
  }
}



/* Return true if BPT is either a software breakpoint or a hardware
   breakpoint.  */

int
is_breakpoint (const struct breakpoint *bpt)
{
  return (bpt->type == bp_breakpoint
	  || bpt->type == bp_hardware_breakpoint
	  || bpt->type == bp_dprintf);
}

/* Return true if BPT is of any hardware watchpoint kind.  */

static int
is_hardware_watchpoint (const struct breakpoint *bpt)
{
  return (bpt->type == bp_hardware_watchpoint
	  || bpt->type == bp_read_watchpoint
	  || bpt->type == bp_access_watchpoint);
}

/* Return true if BPT is of any watchpoint kind, hardware or
   software.  */

int
is_watchpoint (const struct breakpoint *bpt)
{
  return (is_hardware_watchpoint (bpt)
	  || bpt->type == bp_watchpoint);
}

/* Returns true if the current thread and its running state are safe
   to evaluate or update watchpoint B.  Watchpoints on local
   expressions need to be evaluated in the context of the thread that
   was current when the watchpoint was created, and, that thread needs
   to be stopped to be able to select the correct frame context.
   Watchpoints on global expressions can be evaluated on any thread,
   and in any state.  It is presently left to the target allowing
   memory accesses when threads are running.  */

static int
watchpoint_in_thread_scope (struct watchpoint *b)
{
  return (b->base.pspace == current_program_space
	  && (ptid_equal (b->watchpoint_thread, null_ptid)
	      || (ptid_equal (inferior_ptid, b->watchpoint_thread)
		  && !is_executing (inferior_ptid))));
}

/* Set watchpoint B to disp_del_at_next_stop, even including its possible
   associated bp_watchpoint_scope breakpoint.  */

static void
watchpoint_del_at_next_stop (struct watchpoint *w)
{
  struct breakpoint *b = &w->base;

  if (b->related_breakpoint != b)
    {
      gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope);
      gdb_assert (b->related_breakpoint->related_breakpoint == b);
      b->related_breakpoint->disposition = disp_del_at_next_stop;
      b->related_breakpoint->related_breakpoint = b->related_breakpoint;
      b->related_breakpoint = b;
    }
  b->disposition = disp_del_at_next_stop;
}

/* Extract a bitfield value from value VAL using the bit parameters contained in
   watchpoint W.  */

static struct value *
extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val)
{
  struct value *bit_val;

  if (val == NULL)
    return NULL;

  bit_val = allocate_value (value_type (val));

  unpack_value_bitfield (bit_val,
			 w->val_bitpos,
			 w->val_bitsize,
			 value_contents_for_printing (val),
			 value_offset (val),
			 val);

  return bit_val;
}

/* Allocate a dummy location and add it to B, which must be a software
   watchpoint.  This is required because even if a software watchpoint
   is not watching any memory, bpstat_stop_status requires a location
   to be able to report stops.  */

static void
software_watchpoint_add_no_memory_location (struct breakpoint *b,
					    struct program_space *pspace)
{
  gdb_assert (b->type == bp_watchpoint && b->loc == NULL);

  b->loc = allocate_bp_location (b);
  b->loc->pspace = pspace;
  b->loc->address = -1;
  b->loc->length = -1;
}

/* Returns true if B is a software watchpoint that is not watching any
   memory (e.g., "watch $pc").  */

static int
is_no_memory_software_watchpoint (struct breakpoint *b)
{
  return (b->type == bp_watchpoint
	  && b->loc != NULL
	  && b->loc->next == NULL
	  && b->loc->address == -1
	  && b->loc->length == -1);
}

/* Assuming that B is a watchpoint:
   - Reparse watchpoint expression, if REPARSE is non-zero
   - Evaluate expression and store the result in B->val
   - Evaluate the condition if there is one, and store the result
     in b->loc->cond.
   - Update the list of values that must be watched in B->loc.

   If the watchpoint disposition is disp_del_at_next_stop, then do
   nothing.  If this is local watchpoint that is out of scope, delete
   it.

   Even with `set breakpoint always-inserted on' the watchpoints are
   removed + inserted on each stop here.  Normal breakpoints must
   never be removed because they might be missed by a running thread
   when debugging in non-stop mode.  On the other hand, hardware
   watchpoints (is_hardware_watchpoint; processed here) are specific
   to each LWP since they are stored in each LWP's hardware debug
   registers.  Therefore, such LWP must be stopped first in order to
   be able to modify its hardware watchpoints.

   Hardware watchpoints must be reset exactly once after being
   presented to the user.  It cannot be done sooner, because it would
   reset the data used to present the watchpoint hit to the user.  And
   it must not be done later because it could display the same single
   watchpoint hit during multiple GDB stops.  Note that the latter is
   relevant only to the hardware watchpoint types bp_read_watchpoint
   and bp_access_watchpoint.  False hit by bp_hardware_watchpoint is
   not user-visible - its hit is suppressed if the memory content has
   not changed.

   The following constraints influence the location where we can reset
   hardware watchpoints:

   * target_stopped_by_watchpoint and target_stopped_data_address are
     called several times when GDB stops.

   [linux] 
   * Multiple hardware watchpoints can be hit at the same time,
     causing GDB to stop.  GDB only presents one hardware watchpoint
     hit at a time as the reason for stopping, and all the other hits
     are presented later, one after the other, each time the user
     requests the execution to be resumed.  Execution is not resumed
     for the threads still having pending hit event stored in
     LWP_INFO->STATUS.  While the watchpoint is already removed from
     the inferior on the first stop the thread hit event is kept being
     reported from its cached value by linux_nat_stopped_data_address
     until the real thread resume happens after the watchpoint gets
     presented and thus its LWP_INFO->STATUS gets reset.

   Therefore the hardware watchpoint hit can get safely reset on the
   watchpoint removal from inferior.  */

static void
update_watchpoint (struct watchpoint *b, int reparse)
{
  int within_current_scope;
  struct frame_id saved_frame_id;
  int frame_saved;

  /* If this is a local watchpoint, we only want to check if the
     watchpoint frame is in scope if the current thread is the thread
     that was used to create the watchpoint.  */
  if (!watchpoint_in_thread_scope (b))
    return;

  if (b->base.disposition == disp_del_at_next_stop)
    return;
 
  frame_saved = 0;

  /* Determine if the watchpoint is within scope.  */
  if (b->exp_valid_block == NULL)
    within_current_scope = 1;
  else
    {
      struct frame_info *fi = get_current_frame ();
      struct gdbarch *frame_arch = get_frame_arch (fi);
      CORE_ADDR frame_pc = get_frame_pc (fi);

      /* If we're at a point where the stack has been destroyed
	 (e.g. in a function epilogue), unwinding may not work
	 properly. Do not attempt to recreate locations at this
	 point.  See similar comments in watchpoint_check.  */
      if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc))
	return;

      /* Save the current frame's ID so we can restore it after
         evaluating the watchpoint expression on its own frame.  */
      /* FIXME drow/2003-09-09: It would be nice if evaluate_expression
         took a frame parameter, so that we didn't have to change the
         selected frame.  */
      frame_saved = 1;
      saved_frame_id = get_frame_id (get_selected_frame (NULL));

      fi = frame_find_by_id (b->watchpoint_frame);
      within_current_scope = (fi != NULL);
      if (within_current_scope)
	select_frame (fi);
    }

  /* We don't free locations.  They are stored in the bp_location array
     and update_global_location_list will eventually delete them and
     remove breakpoints if needed.  */
  b->base.loc = NULL;

  if (within_current_scope && reparse)
    {
      const char *s;

      b->exp.reset ();
      s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string;
      b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0);
      /* If the meaning of expression itself changed, the old value is
	 no longer relevant.  We don't want to report a watchpoint hit
	 to the user when the old value and the new value may actually
	 be completely different objects.  */
      value_free (b->val);
      b->val = NULL;
      b->val_valid = 0;

      /* Note that unlike with breakpoints, the watchpoint's condition
	 expression is stored in the breakpoint object, not in the
	 locations (re)created below.  */
      if (b->base.cond_string != NULL)
	{
	  b->cond_exp.reset ();

	  s = b->base.cond_string;
	  b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0);
	}
    }

  /* If we failed to parse the expression, for example because
     it refers to a global variable in a not-yet-loaded shared library,
     don't try to insert watchpoint.  We don't automatically delete
     such watchpoint, though, since failure to parse expression
     is different from out-of-scope watchpoint.  */
  if (!target_has_execution)
    {
      /* Without execution, memory can't change.  No use to try and
	 set watchpoint locations.  The watchpoint will be reset when
	 the target gains execution, through breakpoint_re_set.  */
      if (!can_use_hw_watchpoints)
	{
	  if (b->base.ops->works_in_software_mode (&b->base))
	    b->base.type = bp_watchpoint;
	  else
	    error (_("Can't set read/access watchpoint when "
		     "hardware watchpoints are disabled."));
	}
    }
  else if (within_current_scope && b->exp)
    {
      int pc = 0;
      struct value *val_chain, *v, *result, *next;
      struct program_space *frame_pspace;

      fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0);

      /* Avoid setting b->val if it's already set.  The meaning of
	 b->val is 'the last value' user saw, and we should update
	 it only if we reported that last value to user.  As it
	 happens, the code that reports it updates b->val directly.
	 We don't keep track of the memory value for masked
	 watchpoints.  */
      if (!b->val_valid && !is_masked_watchpoint (&b->base))
	{
	  if (b->val_bitsize != 0)
	    {
	      v = extract_bitfield_from_watchpoint_value (b, v);
	      if (v != NULL)
		release_value (v);
	    }
	  b->val = v;
	  b->val_valid = 1;
	}

      frame_pspace = get_frame_program_space (get_selected_frame (NULL));

      /* Look at each value on the value chain.  */
      for (v = val_chain; v; v = value_next (v))
	{
	  /* If it's a memory location, and GDB actually needed
	     its contents to evaluate the expression, then we
	     must watch it.  If the first value returned is
	     still lazy, that means an error occurred reading it;
	     watch it anyway in case it becomes readable.  */
	  if (VALUE_LVAL (v) == lval_memory
	      && (v == val_chain || ! value_lazy (v)))
	    {
	      struct type *vtype = check_typedef (value_type (v));

	      /* We only watch structs and arrays if user asked
		 for it explicitly, never if they just happen to
		 appear in the middle of some value chain.  */
	      if (v == result
		  || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
		      && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
		{
		  CORE_ADDR addr;
		  enum target_hw_bp_type type;
		  struct bp_location *loc, **tmp;
		  int bitpos = 0, bitsize = 0;

		  if (value_bitsize (v) != 0)
		    {
		      /* Extract the bit parameters out from the bitfield
			 sub-expression.  */
		      bitpos = value_bitpos (v);
		      bitsize = value_bitsize (v);
		    }
		  else if (v == result && b->val_bitsize != 0)
		    {
		     /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield
			lvalue whose bit parameters are saved in the fields
			VAL_BITPOS and VAL_BITSIZE.  */
		      bitpos = b->val_bitpos;
		      bitsize = b->val_bitsize;
		    }

		  addr = value_address (v);
		  if (bitsize != 0)
		    {
		      /* Skip the bytes that don't contain the bitfield.  */
		      addr += bitpos / 8;
		    }

		  type = hw_write;
		  if (b->base.type == bp_read_watchpoint)
		    type = hw_read;
		  else if (b->base.type == bp_access_watchpoint)
		    type = hw_access;

		  loc = allocate_bp_location (&b->base);
		  for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next))
		    ;
		  *tmp = loc;
		  loc->gdbarch = get_type_arch (value_type (v));

		  loc->pspace = frame_pspace;
		  loc->address = addr;

		  if (bitsize != 0)
		    {
		      /* Just cover the bytes that make up the bitfield.  */
		      loc->length = ((bitpos % 8) + bitsize + 7) / 8;
		    }
		  else
		    loc->length = TYPE_LENGTH (value_type (v));

		  loc->watchpoint_type = type;
		}
	    }
	}

      /* Change the type of breakpoint between hardware assisted or
	 an ordinary watchpoint depending on the hardware support
	 and free hardware slots.  REPARSE is set when the inferior
	 is started.  */
      if (reparse)
	{
	  int reg_cnt;
	  enum bp_loc_type loc_type;
	  struct bp_location *bl;

	  reg_cnt = can_use_hardware_watchpoint (val_chain);

	  if (reg_cnt)
	    {
	      int i, target_resources_ok, other_type_used;
	      enum bptype type;

	      /* Use an exact watchpoint when there's only one memory region to be
		 watched, and only one debug register is needed to watch it.  */
	      b->exact = target_exact_watchpoints && reg_cnt == 1;

	      /* We need to determine how many resources are already
		 used for all other hardware watchpoints plus this one
		 to see if we still have enough resources to also fit
		 this watchpoint in as well.  */

	      /* If this is a software watchpoint, we try to turn it
		 to a hardware one -- count resources as if B was of
		 hardware watchpoint type.  */
	      type = b->base.type;
	      if (type == bp_watchpoint)
		type = bp_hardware_watchpoint;

	      /* This watchpoint may or may not have been placed on
		 the list yet at this point (it won't be in the list
		 if we're trying to create it for the first time,
		 through watch_command), so always account for it
		 manually.  */

	      /* Count resources used by all watchpoints except B.  */
	      i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used);

	      /* Add in the resources needed for B.  */
	      i += hw_watchpoint_use_count (&b->base);

	      target_resources_ok
		= target_can_use_hardware_watchpoint (type, i, other_type_used);
	      if (target_resources_ok <= 0)
		{
		  int sw_mode = b->base.ops->works_in_software_mode (&b->base);

		  if (target_resources_ok == 0 && !sw_mode)
		    error (_("Target does not support this type of "
			     "hardware watchpoint."));
		  else if (target_resources_ok < 0 && !sw_mode)
		    error (_("There are not enough available hardware "
			     "resources for this watchpoint."));

		  /* Downgrade to software watchpoint.  */
		  b->base.type = bp_watchpoint;
		}
	      else
		{
		  /* If this was a software watchpoint, we've just
		     found we have enough resources to turn it to a
		     hardware watchpoint.  Otherwise, this is a
		     nop.  */
		  b->base.type = type;
		}
	    }
	  else if (!b->base.ops->works_in_software_mode (&b->base))
	    {
	      if (!can_use_hw_watchpoints)
		error (_("Can't set read/access watchpoint when "
			 "hardware watchpoints are disabled."));
	      else
		error (_("Expression cannot be implemented with "
			 "read/access watchpoint."));
	    }
	  else
	    b->base.type = bp_watchpoint;

	  loc_type = (b->base.type == bp_watchpoint? bp_loc_other
		      : bp_loc_hardware_watchpoint);
	  for (bl = b->base.loc; bl; bl = bl->next)
	    bl->loc_type = loc_type;
	}

      for (v = val_chain; v; v = next)
	{
	  next = value_next (v);
	  if (v != b->val)
	    value_free (v);
	}

      /* If a software watchpoint is not watching any memory, then the
	 above left it without any location set up.  But,
	 bpstat_stop_status requires a location to be able to report
	 stops, so make sure there's at least a dummy one.  */
      if (b->base.type == bp_watchpoint && b->base.loc == NULL)
	software_watchpoint_add_no_memory_location (&b->base, frame_pspace);
    }
  else if (!within_current_scope)
    {
      printf_filtered (_("\
Watchpoint %d deleted because the program has left the block\n\
in which its expression is valid.\n"),
		       b->base.number);
      watchpoint_del_at_next_stop (b);
    }

  /* Restore the selected frame.  */
  if (frame_saved)
    select_frame (frame_find_by_id (saved_frame_id));
}


/* Returns 1 iff breakpoint location should be
   inserted in the inferior.  We don't differentiate the type of BL's owner
   (breakpoint vs. tracepoint), although insert_location in tracepoint's
   breakpoint_ops is not defined, because in insert_bp_location,
   tracepoint's insert_location will not be called.  */
static int
should_be_inserted (struct bp_location *bl)
{
  if (bl->owner == NULL || !breakpoint_enabled (bl->owner))
    return 0;

  if (bl->owner->disposition == disp_del_at_next_stop)
    return 0;

  if (!bl->enabled || bl->shlib_disabled || bl->duplicate)
    return 0;

  if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup)
    return 0;

  /* This is set for example, when we're attached to the parent of a
     vfork, and have detached from the child.  The child is running
     free, and we expect it to do an exec or exit, at which point the
     OS makes the parent schedulable again (and the target reports
     that the vfork is done).  Until the child is done with the shared
     memory region, do not insert breakpoints in the parent, otherwise
     the child could still trip on the parent's breakpoints.  Since
     the parent is blocked anyway, it won't miss any breakpoint.  */
  if (bl->pspace->breakpoints_not_allowed)
    return 0;

  /* Don't insert a breakpoint if we're trying to step past its
     location, except if the breakpoint is a single-step breakpoint,
     and the breakpoint's thread is the thread which is stepping past
     a breakpoint.  */
  if ((bl->loc_type == bp_loc_software_breakpoint
       || bl->loc_type == bp_loc_hardware_breakpoint)
      && stepping_past_instruction_at (bl->pspace->aspace,
				       bl->address)
      /* The single-step breakpoint may be inserted at the location
	 we're trying to step if the instruction branches to itself.
	 However, the instruction won't be executed at all and it may
	 break the semantics of the instruction, for example, the
	 instruction is a conditional branch or updates some flags.
	 We can't fix it unless GDB is able to emulate the instruction
	 or switch to displaced stepping.  */
      && !(bl->owner->type == bp_single_step
	   && thread_is_stepping_over_breakpoint (bl->owner->thread)))
    {
      if (debug_infrun)
	{
	  fprintf_unfiltered (gdb_stdlog,
			      "infrun: skipping breakpoint: "
			      "stepping past insn at: %s\n",
			      paddress (bl->gdbarch, bl->address));
	}
      return 0;
    }

  /* Don't insert watchpoints if we're trying to step past the
     instruction that triggered one.  */
  if ((bl->loc_type == bp_loc_hardware_watchpoint)
      && stepping_past_nonsteppable_watchpoint ())
    {
      if (debug_infrun)
	{
	  fprintf_unfiltered (gdb_stdlog,
			      "infrun: stepping past non-steppable watchpoint. "
			      "skipping watchpoint at %s:%d\n",
			      paddress (bl->gdbarch, bl->address),
			      bl->length);
	}
      return 0;
    }

  return 1;
}

/* Same as should_be_inserted but does the check assuming
   that the location is not duplicated.  */

static int
unduplicated_should_be_inserted (struct bp_location *bl)
{
  int result;
  const int save_duplicate = bl->duplicate;

  bl->duplicate = 0;
  result = should_be_inserted (bl);
  bl->duplicate = save_duplicate;
  return result;
}

/* Parses a conditional described by an expression COND into an
   agent expression bytecode suitable for evaluation
   by the bytecode interpreter.  Return NULL if there was
   any error during parsing.  */

static agent_expr_up
parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond)
{
  if (cond == NULL)
    return NULL;

  agent_expr_up aexpr;

  /* We don't want to stop processing, so catch any errors
     that may show up.  */
  TRY
    {
      aexpr = gen_eval_for_expr (scope, cond);
    }

  CATCH (ex, RETURN_MASK_ERROR)
    {
      /* If we got here, it means the condition could not be parsed to a valid
	 bytecode expression and thus can't be evaluated on the target's side.
	 It's no use iterating through the conditions.  */
    }
  END_CATCH

  /* We have a valid agent expression.  */
  return aexpr;
}

/* Based on location BL, create a list of breakpoint conditions to be
   passed on to the target.  If we have duplicated locations with different
   conditions, we will add such conditions to the list.  The idea is that the
   target will evaluate the list of conditions and will only notify GDB when
   one of them is true.  */

static void
build_target_condition_list (struct bp_location *bl)
{
  struct bp_location **locp = NULL, **loc2p;
  int null_condition_or_parse_error = 0;
  int modified = bl->needs_update;
  struct bp_location *loc;

  /* Release conditions left over from a previous insert.  */
  bl->target_info.conditions.clear ();

  /* This is only meaningful if the target is
     evaluating conditions and if the user has
     opted for condition evaluation on the target's
     side.  */
  if (gdb_evaluates_breakpoint_condition_p ()
      || !target_supports_evaluation_of_breakpoint_conditions ())
    return;

  /* Do a first pass to check for locations with no assigned
     conditions or conditions that fail to parse to a valid agent expression
     bytecode.  If any of these happen, then it's no use to send conditions
     to the target since this location will always trigger and generate a
     response back to GDB.  */
  ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
    {
      loc = (*loc2p);
      if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num)
	{
	  if (modified)
	    {
	      /* Re-parse the conditions since something changed.  In that
		 case we already freed the condition bytecodes (see
		 force_breakpoint_reinsertion).  We just
		 need to parse the condition to bytecodes again.  */
	      loc->cond_bytecode = parse_cond_to_aexpr (bl->address,
							loc->cond.get ());
	    }

	  /* If we have a NULL bytecode expression, it means something
	     went wrong or we have a null condition expression.  */
	  if (!loc->cond_bytecode)
	    {
	      null_condition_or_parse_error = 1;
	      break;
	    }
	}
    }

  /* If any of these happened, it means we will have to evaluate the conditions
     for the location's address on gdb's side.  It is no use keeping bytecodes
     for all the other duplicate locations, thus we free all of them here.

     This is so we have a finer control over which locations' conditions are
     being evaluated by GDB or the remote stub.  */
  if (null_condition_or_parse_error)
    {
      ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
	{
	  loc = (*loc2p);
	  if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num)
	    {
	      /* Only go as far as the first NULL bytecode is
		 located.  */
	      if (!loc->cond_bytecode)
		return;

	      loc->cond_bytecode.reset ();
	    }
	}
    }

  /* No NULL conditions or failed bytecode generation.  Build a condition list
     for this location's address.  */
  ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
    {
      loc = (*loc2p);
      if (loc->cond
	  && is_breakpoint (loc->owner)
	  && loc->pspace->num == bl->pspace->num
	  && loc->owner->enable_state == bp_enabled
	  && loc->enabled)
	{
	  /* Add the condition to the vector.  This will be used later
	     to send the conditions to the target.  */
	  bl->target_info.conditions.push_back (loc->cond_bytecode.get ());
	}
    }

  return;
}

/* Parses a command described by string CMD into an agent expression
   bytecode suitable for evaluation by the bytecode interpreter.
   Return NULL if there was any error during parsing.  */

static agent_expr_up
parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd)
{
  struct cleanup *old_cleanups = 0;
  struct expression **argvec;
  const char *cmdrest;
  const char *format_start, *format_end;
  struct format_piece *fpieces;
  int nargs;
  struct gdbarch *gdbarch = get_current_arch ();

  if (cmd == NULL)
    return NULL;

  cmdrest = cmd;

  if (*cmdrest == ',')
    ++cmdrest;
  cmdrest = skip_spaces_const (cmdrest);

  if (*cmdrest++ != '"')
    error (_("No format string following the location"));

  format_start = cmdrest;

  fpieces = parse_format_string (&cmdrest);

  old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces);

  format_end = cmdrest;

  if (*cmdrest++ != '"')
    error (_("Bad format string, non-terminated '\"'."));
  
  cmdrest = skip_spaces_const (cmdrest);

  if (!(*cmdrest == ',' || *cmdrest == '\0'))
    error (_("Invalid argument syntax"));

  if (*cmdrest == ',')
    cmdrest++;
  cmdrest = skip_spaces_const (cmdrest);

  /* For each argument, make an expression.  */

  argvec = (struct expression **) alloca (strlen (cmd)
					 * sizeof (struct expression *));

  nargs = 0;
  while (*cmdrest != '\0')
    {
      const char *cmd1;

      cmd1 = cmdrest;
      expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1);
      argvec[nargs++] = expr.release ();
      cmdrest = cmd1;
      if (*cmdrest == ',')
	++cmdrest;
    }

  agent_expr_up aexpr;

  /* We don't want to stop processing, so catch any errors
     that may show up.  */
  TRY
    {
      aexpr = gen_printf (scope, gdbarch, 0, 0,
			  format_start, format_end - format_start,
			  fpieces, nargs, argvec);
    }
  CATCH (ex, RETURN_MASK_ERROR)
    {
      /* If we got here, it means the command could not be parsed to a valid
	 bytecode expression and thus can't be evaluated on the target's side.
	 It's no use iterating through the other commands.  */
    }
  END_CATCH

  do_cleanups (old_cleanups);

  /* We have a valid agent expression, return it.  */
  return aexpr;
}

/* Based on location BL, create a list of breakpoint commands to be
   passed on to the target.  If we have duplicated locations with
   different commands, we will add any such to the list.  */

static void
build_target_command_list (struct bp_location *bl)
{
  struct bp_location **locp = NULL, **loc2p;
  int null_command_or_parse_error = 0;
  int modified = bl->needs_update;
  struct bp_location *loc;

  /* Clear commands left over from a previous insert.  */
  bl->target_info.tcommands.clear ();

  if (!target_can_run_breakpoint_commands ())
    return;

  /* For now, limit to agent-style dprintf breakpoints.  */
  if (dprintf_style != dprintf_style_agent)
    return;

  /* For now, if we have any duplicate location that isn't a dprintf,
     don't install the target-side commands, as that would make the
     breakpoint not be reported to the core, and we'd lose
     control.  */
  ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
    {
      loc = (*loc2p);
      if (is_breakpoint (loc->owner)
	  && loc->pspace->num == bl->pspace->num
	  && loc->owner->type != bp_dprintf)
	return;
    }

  /* Do a first pass to check for locations with no assigned
     conditions or conditions that fail to parse to a valid agent expression
     bytecode.  If any of these happen, then it's no use to send conditions
     to the target since this location will always trigger and generate a
     response back to GDB.  */
  ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
    {
      loc = (*loc2p);
      if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num)
	{
	  if (modified)
	    {
	      /* Re-parse the commands since something changed.  In that
		 case we already freed the command bytecodes (see
		 force_breakpoint_reinsertion).  We just
		 need to parse the command to bytecodes again.  */
	      loc->cmd_bytecode
		= parse_cmd_to_aexpr (bl->address,
				      loc->owner->extra_string);
	    }

	  /* If we have a NULL bytecode expression, it means something
	     went wrong or we have a null command expression.  */
	  if (!loc->cmd_bytecode)
	    {
	      null_command_or_parse_error = 1;
	      break;
	    }
	}
    }

  /* If anything failed, then we're not doing target-side commands,
     and so clean up.  */
  if (null_command_or_parse_error)
    {
      ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
	{
	  loc = (*loc2p);
	  if (is_breakpoint (loc->owner)
	      && loc->pspace->num == bl->pspace->num)
	    {
	      /* Only go as far as the first NULL bytecode is
		 located.  */
	      if (loc->cmd_bytecode == NULL)
		return;

	      loc->cmd_bytecode.reset ();
	    }
	}
    }

  /* No NULL commands or failed bytecode generation.  Build a command list
     for this location's address.  */
  ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address)
    {
      loc = (*loc2p);
      if (loc->owner->extra_string
	  && is_breakpoint (loc->owner)
	  && loc->pspace->num == bl->pspace->num
	  && loc->owner->enable_state == bp_enabled
	  && loc->enabled)
	{
	  /* Add the command to the vector.  This will be used later
	     to send the commands to the target.  */
	  bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ());
	}
    }

  bl->target_info.persist = 0;
  /* Maybe flag this location as persistent.  */
  if (bl->owner->type == bp_dprintf && disconnected_dprintf)
    bl->target_info.persist = 1;
}

/* Return the kind of breakpoint on address *ADDR.  Get the kind
   of breakpoint according to ADDR except single-step breakpoint.
   Get the kind of single-step breakpoint according to the current
   registers state.  */

static int
breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr)
{
  if (bl->owner->type == bp_single_step)
    {
      struct thread_info *thr = find_thread_global_id (bl->owner->thread);
      struct regcache *regcache;

      regcache = get_thread_regcache (thr->ptid);

      return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch,
							 regcache, addr);
    }
  else
    return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr);
}

/* Insert a low-level "breakpoint" of some type.  BL is the breakpoint
   location.  Any error messages are printed to TMP_ERROR_STREAM; and
   DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems.
   Returns 0 for success, 1 if the bp_location type is not supported or
   -1 for failure.

   NOTE drow/2003-09-09: This routine could be broken down to an
   object-style method for each breakpoint or catchpoint type.  */
static int
insert_bp_location (struct bp_location *bl,
		    struct ui_file *tmp_error_stream,
		    int *disabled_breaks,
		    int *hw_breakpoint_error,
		    int *hw_bp_error_explained_already)
{
  enum errors bp_err = GDB_NO_ERROR;
  const char *bp_err_message = NULL;

  if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update))
    return 0;

  /* Note we don't initialize bl->target_info, as that wipes out
     the breakpoint location's shadow_contents if the breakpoint
     is still inserted at that location.  This in turn breaks
     target_read_memory which depends on these buffers when
     a memory read is requested at the breakpoint location:
     Once the target_info has been wiped, we fail to see that
     we have a breakpoint inserted at that address and thus
     read the breakpoint instead of returning the data saved in
     the breakpoint location's shadow contents.  */
  bl->target_info.reqstd_address = bl->address;
  bl->target_info.placed_address_space = bl->pspace->aspace;
  bl->target_info.length = bl->length;

  /* When working with target-side conditions, we must pass all the conditions
     for the same breakpoint address down to the target since GDB will not
     insert those locations.  With a list of breakpoint conditions, the target
     can decide when to stop and notify GDB.  */

  if (is_breakpoint (bl->owner))
    {
      build_target_condition_list (bl);
      build_target_command_list (bl);
      /* Reset the modification marker.  */
      bl->needs_update = 0;
    }

  if (bl->loc_type == bp_loc_software_breakpoint
      || bl->loc_type == bp_loc_hardware_breakpoint)
    {
      if (bl->owner->type != bp_hardware_breakpoint)
	{
	  /* If the explicitly specified breakpoint type
	     is not hardware breakpoint, check the memory map to see
	     if the breakpoint address is in read only memory or not.

	     Two important cases are:
	     - location type is not hardware breakpoint, memory
	     is readonly.  We change the type of the location to
	     hardware breakpoint.
	     - location type is hardware breakpoint, memory is
	     read-write.  This means we've previously made the
	     location hardware one, but then the memory map changed,
	     so we undo.
	     
	     When breakpoints are removed, remove_breakpoints will use
	     location types we've just set here, the only possible
	     problem is that memory map has changed during running
	     program, but it's not going to work anyway with current
	     gdb.  */
	  struct mem_region *mr 
	    = lookup_mem_region (bl->target_info.reqstd_address);
	  
	  if (mr)
	    {
	      if (automatic_hardware_breakpoints)
		{
		  enum bp_loc_type new_type;
		  
		  if (mr->attrib.mode != MEM_RW)
		    new_type = bp_loc_hardware_breakpoint;
		  else 
		    new_type = bp_loc_software_breakpoint;
		  
		  if (new_type != bl->loc_type)
		    {
		      static int said = 0;

		      bl->loc_type = new_type;
		      if (!said)
			{
			  fprintf_filtered (gdb_stdout,
					    _("Note: automatically using "
					      "hardware breakpoints for "
					      "read-only addresses.\n"));
			  said = 1;
			}
		    }
		}
	      else if (bl->loc_type == bp_loc_software_breakpoint
		       && mr->attrib.mode != MEM_RW)
		{
		  fprintf_unfiltered (tmp_error_stream,
				      _("Cannot insert breakpoint %d.\n"
					"Cannot set software breakpoint "
					"at read-only address %s\n"),
				      bl->owner->number,
				      paddress (bl->gdbarch, bl->address));
		  return 1;
		}
	    }
	}
        
      /* First check to see if we have to handle an overlay.  */
      if (overlay_debugging == ovly_off
	  || bl->section == NULL
	  || !(section_is_overlay (bl->section)))
	{
	  /* No overlay handling: just set the breakpoint.  */
	  TRY
	    {
	      int val;

	      val = bl->owner->ops->insert_location (bl);
	      if (val)
		bp_err = GENERIC_ERROR;
	    }
	  CATCH (e, RETURN_MASK_ALL)
	    {
	      bp_err = e.error;
	      bp_err_message = e.message;
	    }
	  END_CATCH
	}
      else
	{
	  /* This breakpoint is in an overlay section.
	     Shall we set a breakpoint at the LMA?  */
	  if (!overlay_events_enabled)
	    {
	      /* Yes -- overlay event support is not active, 
		 so we must try to set a breakpoint at the LMA.
		 This will not work for a hardware breakpoint.  */
	      if (bl->loc_type == bp_loc_hardware_breakpoint)
		warning (_("hardware breakpoint %d not supported in overlay!"),
			 bl->owner->number);
	      else
		{
		  CORE_ADDR addr = overlay_unmapped_address (bl->address,
							     bl->section);
		  /* Set a software (trap) breakpoint at the LMA.  */
		  bl->overlay_target_info = bl->target_info;
		  bl->overlay_target_info.reqstd_address = addr;

		  /* No overlay handling: just set the breakpoint.  */
		  TRY
		    {
		      int val;

		      bl->overlay_target_info.kind
			= breakpoint_kind (bl, &addr);
		      bl->overlay_target_info.placed_address = addr;
		      val = target_insert_breakpoint (bl->gdbarch,
						      &bl->overlay_target_info);
		      if (val)
			bp_err = GENERIC_ERROR;
		    }
		  CATCH (e, RETURN_MASK_ALL)
		    {
		      bp_err = e.error;
		      bp_err_message = e.message;
		    }
		  END_CATCH

		  if (bp_err != GDB_NO_ERROR)
		    fprintf_unfiltered (tmp_error_stream,
					"Overlay breakpoint %d "
					"failed: in ROM?\n",
					bl->owner->number);
		}
	    }
	  /* Shall we set a breakpoint at the VMA? */
	  if (section_is_mapped (bl->section))
	    {
	      /* Yes.  This overlay section is mapped into memory.  */
	      TRY
	        {
		  int val;

	          val = bl->owner->ops->insert_location (bl);
		  if (val)
		    bp_err = GENERIC_ERROR;
	        }
	      CATCH (e, RETURN_MASK_ALL)
	        {
		  bp_err = e.error;
		  bp_err_message = e.message;
	        }
	      END_CATCH
	    }
	  else
	    {
	      /* No.  This breakpoint will not be inserted.  
		 No error, but do not mark the bp as 'inserted'.  */
	      return 0;
	    }
	}

      if (bp_err != GDB_NO_ERROR)
	{
	  /* Can't set the breakpoint.  */

	  /* In some cases, we might not be able to insert a
	     breakpoint in a shared library that has already been
	     removed, but we have not yet processed the shlib unload
	     event.  Unfortunately, some targets that implement
	     breakpoint insertion themselves can't tell why the
	     breakpoint insertion failed (e.g., the remote target
	     doesn't define error codes), so we must treat generic
	     errors as memory errors.  */
	  if ((bp_err == GENERIC_ERROR || bp_err == MEMORY_ERROR)
	      && bl->loc_type == bp_loc_software_breakpoint
	      && (solib_name_from_address (bl->pspace, bl->address)
		  || shared_objfile_contains_address_p (bl->pspace,
							bl->address)))
	    {
	      /* See also: disable_breakpoints_in_shlibs.  */
	      bl->shlib_disabled = 1;
	      observer_notify_breakpoint_modified (bl->owner);
	      if (!*disabled_breaks)
		{
		  fprintf_unfiltered (tmp_error_stream, 
				      "Cannot insert breakpoint %d.\n", 
				      bl->owner->number);
		  fprintf_unfiltered (tmp_error_stream, 
				      "Temporarily disabling shared "
				      "library breakpoints:\n");
		}
	      *disabled_breaks = 1;
	      fprintf_unfiltered (tmp_error_stream,
				  "breakpoint #%d\n", bl->owner->number);
	      return 0;
	    }
	  else
	    {
	      if (bl->loc_type == bp_loc_hardware_breakpoint)
		{
		  *hw_breakpoint_error = 1;
		  *hw_bp_error_explained_already = bp_err_message != NULL;
                  fprintf_unfiltered (tmp_error_stream,
                                      "Cannot insert hardware breakpoint %d%s",
                                      bl->owner->number, bp_err_message ? ":" : ".\n");
                  if (bp_err_message != NULL)
                    fprintf_unfiltered (tmp_error_stream, "%s.\n", bp_err_message);
		}
	      else
		{
		  if (bp_err_message == NULL)
		    {
		      char *message
			= memory_error_message (TARGET_XFER_E_IO,
						bl->gdbarch, bl->address);
		      struct cleanup *old_chain = make_cleanup (xfree, message);

		      fprintf_unfiltered (tmp_error_stream,
					  "Cannot insert breakpoint %d.\n"
					  "%s\n",
					  bl->owner->number, message);
		      do_cleanups (old_chain);
		    }
		  else
		    {
		      fprintf_unfiltered (tmp_error_stream,
					  "Cannot insert breakpoint %d: %s\n",
					  bl->owner->number,
					  bp_err_message);
		    }
		}
	      return 1;

	    }
	}
      else
	bl->inserted = 1;

      return 0;
    }

  else if (bl->loc_type == bp_loc_hardware_watchpoint
	   /* NOTE drow/2003-09-08: This state only exists for removing
	      watchpoints.  It's not clear that it's necessary...  */
	   && bl->owner->disposition != disp_del_at_next_stop)
    {
      int val;

      gdb_assert (bl->owner->ops != NULL
		  && bl->owner->ops->insert_location != NULL);

      val = bl->owner->ops->insert_location (bl);

      /* If trying to set a read-watchpoint, and it turns out it's not
	 supported, try emulating one with an access watchpoint.  */
      if (val == 1 && bl->watchpoint_type == hw_read)
	{
	  struct bp_location *loc, **loc_temp;

	  /* But don't try to insert it, if there's already another
	     hw_access location that would be considered a duplicate
	     of this one.  */
	  ALL_BP_LOCATIONS (loc, loc_temp)
	    if (loc != bl
		&& loc->watchpoint_type == hw_access
		&& watchpoint_locations_match (bl, loc))
	      {
		bl->duplicate = 1;
		bl->inserted = 1;
		bl->target_info = loc->target_info;
		bl->watchpoint_type = hw_access;
		val = 0;
		break;
	      }

	  if (val == 1)
	    {
	      bl->watchpoint_type = hw_access;
	      val = bl->owner->ops->insert_location (bl);

	      if (val)
		/* Back to the original value.  */
		bl->watchpoint_type = hw_read;
	    }
	}

      bl->inserted = (val == 0);
    }

  else if (bl->owner->type == bp_catchpoint)
    {
      int val;

      gdb_assert (bl->owner->ops != NULL
		  && bl->owner->ops->insert_location != NULL);

      val = bl->owner->ops->insert_location (bl);
      if (val)
	{
	  bl->owner->enable_state = bp_disabled;

	  if (val == 1)
	    warning (_("\
Error inserting catchpoint %d: Your system does not support this type\n\
of catchpoint."), bl->owner->number);
	  else
	    warning (_("Error inserting catchpoint %d."), bl->owner->number);
	}

      bl->inserted = (val == 0);

      /* We've already printed an error message if there was a problem
	 inserting this catchpoint, and we've disabled the catchpoint,
	 so just return success.  */
      return 0;
    }

  return 0;
}

/* This function is called when program space PSPACE is about to be
   deleted.  It takes care of updating breakpoints to not reference
   PSPACE anymore.  */

void
breakpoint_program_space_exit (struct program_space *pspace)
{
  struct breakpoint *b, *b_temp;
  struct bp_location *loc, **loc_temp;

  /* Remove any breakpoint that was set through this program space.  */
  ALL_BREAKPOINTS_SAFE (b, b_temp)
    {
      if (b->pspace == pspace)
	delete_breakpoint (b);
    }

  /* Breakpoints set through other program spaces could have locations
     bound to PSPACE as well.  Remove those.  */
  ALL_BP_LOCATIONS (loc, loc_temp)
    {
      struct bp_location *tmp;

      if (loc->pspace == pspace)
	{
	  /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL.  */
	  if (loc->owner->loc == loc)
	    loc->owner->loc = loc->next;
	  else
	    for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next)
	      if (tmp->next == loc)
		{
		  tmp->next = loc->next;
		  break;
		}
	}
    }

  /* Now update the global location list to permanently delete the
     removed locations above.  */
  update_global_location_list (UGLL_DONT_INSERT);
}

/* Make sure all breakpoints are inserted in inferior.
   Throws exception on any error.
   A breakpoint that is already inserted won't be inserted
   again, so calling this function twice is safe.  */
void
insert_breakpoints (void)
{
  struct breakpoint *bpt;

  ALL_BREAKPOINTS (bpt)
    if (is_hardware_watchpoint (bpt))
      {
	struct watchpoint *w = (struct watchpoint *) bpt;

	update_watchpoint (w, 0 /* don't reparse.  */);
      }

  /* Updating watchpoints creates new locations, so update the global
     location list.  Explicitly tell ugll to insert locations and
     ignore breakpoints_always_inserted_mode.  */
  update_global_location_list (UGLL_INSERT);
}

/* Invoke CALLBACK for each of bp_location.  */

void
iterate_over_bp_locations (walk_bp_location_callback callback)
{
  struct bp_location *loc, **loc_tmp;

  ALL_BP_LOCATIONS (loc, loc_tmp)
    {
      callback (loc, NULL);
    }
}

/* This is used when we need to synch breakpoint conditions between GDB and the
   target.  It is the case with deleting and disabling of breakpoints when using
   always-inserted mode.  */

static void
update_inserted_breakpoint_locations (void)
{
  struct bp_location *bl, **blp_tmp;
  int error_flag = 0;
  int val = 0;
  int disabled_breaks = 0;
  int hw_breakpoint_error = 0;
  int hw_bp_details_reported = 0;

  struct ui_file *tmp_error_stream = mem_fileopen ();
  struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream);

  /* Explicitly mark the warning -- this will only be printed if
     there was an error.  */
  fprintf_unfiltered (tmp_error_stream, "Warning:\n");

  save_current_space_and_thread ();

  ALL_BP_LOCATIONS (bl, blp_tmp)
    {
      /* We only want to update software breakpoints and hardware
	 breakpoints.  */
      if (!is_breakpoint (bl->owner))
	continue;

      /* We only want to update locations that are already inserted
	 and need updating.  This is to avoid unwanted insertion during
	 deletion of breakpoints.  */
      if (!bl->inserted || (bl->inserted && !bl->needs_update))
	continue;

      switch_to_program_space_and_thread (bl->pspace);

      /* For targets that support global breakpoints, there's no need
	 to select an inferior to insert breakpoint to.  In fact, even
	 if we aren't attached to any process yet, we should still
	 insert breakpoints.  */
      if (!gdbarch_has_global_breakpoints (target_gdbarch ())
	  && ptid_equal (inferior_ptid, null_ptid))
	continue;

      val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks,
				    &hw_breakpoint_error, &hw_bp_details_reported);
      if (val)
	error_flag = val;
    }

  if (error_flag)
    {
      target_terminal_ours_for_output ();
      error_stream (tmp_error_stream);
    }

  do_cleanups (cleanups);
}

/* Used when starting or continuing the program.  */

static void
insert_breakpoint_locations (void)
{
  struct breakpoint *bpt;
  struct bp_location *bl, **blp_tmp;
  int error_flag = 0;
  int val = 0;
  int disabled_breaks = 0;
  int hw_breakpoint_error = 0;
  int hw_bp_error_explained_already = 0;

  struct ui_file *tmp_error_stream = mem_fileopen ();
  struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream);
  
  /* Explicitly mark the warning -- this will only be printed if
     there was an error.  */
  fprintf_unfiltered (tmp_error_stream, "Warning:\n");

  save_current_space_and_thread ();

  ALL_BP_LOCATIONS (bl, blp_tmp)
    {
      if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update))
	continue;

      /* There is no point inserting thread-specific breakpoints if
	 the thread no longer exists.  ALL_BP_LOCATIONS bp_location
	 has BL->OWNER always non-NULL.  */
      if (bl->owner->thread != -1
	  && !valid_global_thread_id (bl->owner->thread))
	continue;

      switch_to_program_space_and_thread (bl->pspace);

      /* For targets that support global breakpoints, there's no need
	 to select an inferior to insert breakpoint to.  In fact, even
	 if we aren't attached to any process yet, we should still
	 insert breakpoints.  */
      if (!gdbarch_has_global_breakpoints (target_gdbarch ())
	  && ptid_equal (inferior_ptid, null_ptid))
	continue;

      val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks,
				    &hw_breakpoint_error, &hw_bp_error_explained_already);
      if (val)
	error_flag = val;
    }

  /* If we failed to insert all locations of a watchpoint, remove
     them, as half-inserted watchpoint is of limited use.  */
  ALL_BREAKPOINTS (bpt)  
    {
      int some_failed = 0;
      struct bp_location *loc;

      if (!is_hardware_watchpoint (bpt))
	continue;

      if (!breakpoint_enabled (bpt))
	continue;

      if (bpt->disposition == disp_del_at_next_stop)
	continue;
      
      for (loc = bpt->loc; loc; loc = loc->next)
	if (!loc->inserted && should_be_inserted (loc))
	  {
	    some_failed = 1;
	    break;
	  }
      if (some_failed)
	{
	  for (loc = bpt->loc; loc; loc = loc->next)
	    if (loc->inserted)
	      remove_breakpoint (loc);

	  hw_breakpoint_error = 1;
	  fprintf_unfiltered (tmp_error_stream,
			      "Could not insert hardware watchpoint %d.\n", 
			      bpt->number);
	  error_flag = -1;
	}
    }

  if (error_flag)
    {
      /* If a hardware breakpoint or watchpoint was inserted, add a
         message about possibly exhausted resources.  */
      if (hw_breakpoint_error && !hw_bp_error_explained_already)
	{
	  fprintf_unfiltered (tmp_error_stream, 
			      "Could not insert hardware breakpoints:\n\
You may have requested too many hardware breakpoints/watchpoints.\n");
	}
      target_terminal_ours_for_output ();
      error_stream (tmp_error_stream);
    }

  do_cleanups (cleanups);
}

/* Used when the program stops.
   Returns zero if successful, or non-zero if there was a problem
   removing a breakpoint location.  */

int
remove_breakpoints (void)
{
  struct bp_location *bl, **blp_tmp;
  int val = 0;

  ALL_BP_LOCATIONS (bl, blp_tmp)
  {
    if (bl->inserted && !is_tracepoint (bl->owner))
      val |= remove_breakpoint (bl);
  }
  return val;
}

/* When a thread exits, remove breakpoints that are related to
   that thread.  */

static void
remove_threaded_breakpoints (struct thread_info *tp, int silent)
{
  struct breakpoint *b, *b_tmp;

  ALL_BREAKPOINTS_SAFE (b, b_tmp)
    {
      if (b->thread == tp->global_num && user_breakpoint_p (b))
	{
	  b->disposition = disp_del_at_next_stop;

	  printf_filtered (_("\
Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"),
			   b->number, print_thread_id (tp));

	  /* Hide it from the user.  */
	  b->number = 0;
       }
    }
}

/* Remove breakpoints of process PID.  */

int
remove_breakpoints_pid (int pid)
{
  struct bp_location *bl, **blp_tmp;
  int val;
  struct inferior *inf = find_inferior_pid (pid);

  ALL_BP_LOCATIONS (bl, blp_tmp)
  {
    if (bl->pspace != inf->pspace)
      continue;

    if (bl->inserted && !bl->target_info.persist)
      {
	val = remove_breakpoint (bl);
	if (val != 0)
	  return val;
      }
  }
  return 0;
}

int
reattach_breakpoints (int pid)
{
  struct cleanup *old_chain;
  struct bp_location *bl, **blp_tmp;
  int val;
  struct ui_file *tmp_error_stream;
  int dummy1 = 0, dummy2 = 0, dummy3 = 0;
  struct inferior *inf;
  struct thread_info *tp;

  tp = any_live_thread_of_process (pid);
  if (tp == NULL)
    return 1;

  inf = find_inferior_pid (pid);
  old_chain = save_inferior_ptid ();

  inferior_ptid = tp->ptid;

  tmp_error_stream = mem_fileopen ();
  make_cleanup_ui_file_delete (tmp_error_stream);

  ALL_BP_LOCATIONS (bl, blp_tmp)
  {
    if (bl->pspace != inf->pspace)
      continue;

    if (bl->inserted)
      {
	bl->inserted = 0;
	val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2, &dummy3);
	if (val != 0)
	  {
	    do_cleanups (old_chain);
	    return val;
	  }
      }
  }
  do_cleanups (old_chain);
  return 0;
}

static int internal_breakpoint_number = -1;

/* Set the breakpoint number of B, depending on the value of INTERNAL.
   If INTERNAL is non-zero, the breakpoint number will be populated
   from internal_breakpoint_number and that variable decremented.
   Otherwise the breakpoint number will be populated from
   breakpoint_count and that value incremented.  Internal breakpoints
   do not set the internal var bpnum.  */
static void
set_breakpoint_number (int internal, struct breakpoint *b)
{
  if (internal)
    b->number = internal_breakpoint_number--;
  else
    {
      set_breakpoint_count (breakpoint_count + 1);
      b->number = breakpoint_count;
    }
}

static struct breakpoint *
create_internal_breakpoint (struct gdbarch *gdbarch,
			    CORE_ADDR address, enum bptype type,
			    const struct breakpoint_ops *ops)
{
  struct symtab_and_line sal;
  struct breakpoint *b;

  init_sal (&sal);		/* Initialize to zeroes.  */

  sal.pc = address;
  sal.section = find_pc_overlay (sal.pc);
  sal.pspace = current_program_space;

  b = set_raw_breakpoint (gdbarch, sal, type, ops);
  b->number = internal_breakpoint_number--;
  b->disposition = disp_donttouch;

  return b;
}

static const char *const longjmp_names[] =
  {
    "longjmp", "_longjmp", "siglongjmp", "_siglongjmp"
  };
#define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names)

/* Per-objfile data private to breakpoint.c.  */
struct breakpoint_objfile_data
{
  /* Minimal symbol for "_ovly_debug_event" (if any).  */
  struct bound_minimal_symbol overlay_msym;

  /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any).  */
  struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES];

  /* True if we have looked for longjmp probes.  */
  int longjmp_searched;

  /* SystemTap probe points for longjmp (if any).  */
  VEC (probe_p) *longjmp_probes;

  /* Minimal symbol for "std::terminate()" (if any).  */
  struct bound_minimal_symbol terminate_msym;

  /* Minimal symbol for "_Unwind_DebugHook" (if any).  */
  struct bound_minimal_symbol exception_msym;

  /* True if we have looked for exception probes.  */
  int exception_searched;

  /* SystemTap probe points for unwinding (if any).  */
  VEC (probe_p) *exception_probes;
};

static const struct objfile_data *breakpoint_objfile_key;

/* Minimal symbol not found sentinel.  */
static struct minimal_symbol msym_not_found;

/* Returns TRUE if MSYM point to the "not found" sentinel.  */

static int
msym_not_found_p (const struct minimal_symbol *msym)
{
  return msym == &msym_not_found;
}

/* Return per-objfile data needed by breakpoint.c.
   Allocate the data if necessary.  */

static struct breakpoint_objfile_data *
get_breakpoint_objfile_data (struct objfile *objfile)
{
  struct breakpoint_objfile_data *bp_objfile_data;

  bp_objfile_data = ((struct breakpoint_objfile_data *)
		     objfile_data (objfile, breakpoint_objfile_key));
  if (bp_objfile_data == NULL)
    {
      bp_objfile_data =
	XOBNEW (&objfile->objfile_obstack, struct breakpoint_objfile_data);

      memset (bp_objfile_data, 0, sizeof (*bp_objfile_data));
      set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data);
    }
  return bp_objfile_data;
}

static void
free_breakpoint_probes (struct objfile *obj, void *data)
{
  struct breakpoint_objfile_data *bp_objfile_data
    = (struct breakpoint_objfile_data *) data;

  VEC_free (probe_p, bp_objfile_data->longjmp_probes);
  VEC_free (probe_p, bp_objfile_data->exception_probes);
}

static void
create_overlay_event_breakpoint (void)
{
  struct objfile *objfile;
  const char *const func_name = "_ovly_debug_event";

  ALL_OBJFILES (objfile)
    {
      struct breakpoint *b;
      struct breakpoint_objfile_data *bp_objfile_data;
      CORE_ADDR addr;
      struct explicit_location explicit_loc;

      bp_objfile_data = get_breakpoint_objfile_data (objfile);

      if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym))
	continue;

      if (bp_objfile_data->overlay_msym.minsym == NULL)
	{
	  struct bound_minimal_symbol m;

	  m = lookup_minimal_symbol_text (func_name, objfile);
	  if (m.minsym == NULL)
	    {
	      /* Avoid future lookups in this objfile.  */
	      bp_objfile_data->overlay_msym.minsym = &msym_not_found;
	      continue;
	    }
	  bp_objfile_data->overlay_msym = m;
	}

      addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym);
      b = create_internal_breakpoint (get_objfile_arch (objfile), addr,
                                      bp_overlay_event,
				      &internal_breakpoint_ops);
      initialize_explicit_location (&explicit_loc);
      explicit_loc.function_name = ASTRDUP (func_name);
      b->location = new_explicit_location (&explicit_loc);

      if (overlay_debugging == ovly_auto)
        {
          b->enable_state = bp_enabled;
          overlay_events_enabled = 1;
        }
      else
       {
         b->enable_state = bp_disabled;
         overlay_events_enabled = 0;
       }
    }
}

static void
create_longjmp_master_breakpoint (void)
{
  struct program_space *pspace;
  struct cleanup *old_chain;

  old_chain = save_current_program_space ();

  ALL_PSPACES (pspace)
  {
    struct objfile *objfile;

    set_current_program_space (pspace);

    ALL_OBJFILES (objfile)
    {
      int i;
      struct gdbarch *gdbarch;
      struct breakpoint_objfile_data *bp_objfile_data;

      gdbarch = get_objfile_arch (objfile);

      bp_objfile_data = get_breakpoint_objfile_data (objfile);

      if (!bp_objfile_data->longjmp_searched)
	{
	  VEC (probe_p) *ret;

	  ret = find_probes_in_objfile (objfile, "libc", "longjmp");
	  if (ret != NULL)
	    {
	      /* We are only interested in checking one element.  */
	      struct probe *p = VEC_index (probe_p, ret, 0);

	      if (!can_evaluate_probe_arguments (p))
		{
		  /* We cannot use the probe interface here, because it does
		     not know how to evaluate arguments.  */
		  VEC_free (probe_p, ret);
		  ret = NULL;
		}
	    }
	  bp_objfile_data->longjmp_probes = ret;
	  bp_objfile_data->longjmp_searched = 1;
	}

      if (bp_objfile_data->longjmp_probes != NULL)
	{
	  int i;
	  struct probe *probe;
	  struct gdbarch *gdbarch = get_objfile_arch (objfile);

	  for (i = 0;
	       VEC_iterate (probe_p,
			    bp_objfile_data->longjmp_probes,
			    i, probe);
	       ++i)
	    {
	      struct breakpoint *b;

	      b = create_internal_breakpoint (gdbarch,
					      get_probe_address (probe,
								 objfile),
					      bp_longjmp_master,
					      &internal_breakpoint_ops);
	      b->location
		= new_probe_location ("-probe-stap libc:longjmp");
	      b->enable_state = bp_disabled;
	    }

	  continue;
	}

      if (!gdbarch_get_longjmp_target_p (gdbarch))
	continue;

      for (i = 0; i < NUM_LONGJMP_NAMES; i++)
	{
	  struct breakpoint *b;
	  const char *func_name;
	  CORE_ADDR addr;
	  struct explicit_location explicit_loc;

	  if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym))
	    continue;

	  func_name = longjmp_names[i];
	  if (bp_objfile_data->longjmp_msym[i].minsym == NULL)
	    {
	      struct bound_minimal_symbol m;

	      m = lookup_minimal_symbol_text (func_name, objfile);
	      if (m.minsym == NULL)
		{
		  /* Prevent future lookups in this objfile.  */
		  bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found;
		  continue;
		}
	      bp_objfile_data->longjmp_msym[i] = m;
	    }

	  addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]);
	  b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master,
					  &internal_breakpoint_ops);
	  initialize_explicit_location (&explicit_loc);
	  explicit_loc.function_name = ASTRDUP (func_name);
	  b->location = new_explicit_location (&explicit_loc);
	  b->enable_state = bp_disabled;
	}
    }
  }

  do_cleanups (old_chain);
}

/* Create a master std::terminate breakpoint.  */
static void
create_std_terminate_master_breakpoint (void)
{
  struct program_space *pspace;
  struct cleanup *old_chain;
  const char *const func_name = "std::terminate()";

  old_chain = save_current_program_space ();

  ALL_PSPACES (pspace)
  {
    struct objfile *objfile;
    CORE_ADDR addr;

    set_current_program_space (pspace);

    ALL_OBJFILES (objfile)
    {
      struct breakpoint *b;
      struct breakpoint_objfile_data *bp_objfile_data;
      struct explicit_location explicit_loc;

      bp_objfile_data = get_breakpoint_objfile_data (objfile);

      if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym))
	continue;

      if (bp_objfile_data->terminate_msym.minsym == NULL)
	{
	  struct bound_minimal_symbol m;

	  m = lookup_minimal_symbol (func_name, NULL, objfile);
	  if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text
				   && MSYMBOL_TYPE (m.minsym) != mst_file_text))
	    {
	      /* Prevent future lookups in this objfile.  */
	      bp_objfile_data->terminate_msym.minsym = &msym_not_found;
	      continue;
	    }
	  bp_objfile_data->terminate_msym = m;
	}

      addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym);
      b = create_internal_breakpoint (get_objfile_arch (objfile), addr,
                                      bp_std_terminate_master,
				      &internal_breakpoint_ops);
      initialize_explicit_location (&explicit_loc);
      explicit_loc.function_name = ASTRDUP (func_name);
      b->location = new_explicit_location (&explicit_loc);
      b->enable_state = bp_disabled;
    }
  }

  do_cleanups (old_chain);
}

/* Install a master breakpoint on the unwinder's debug hook.  */

static void
create_exception_master_breakpoint (void)
{
  struct objfile *objfile;
  const char *const func_name = "_Unwind_DebugHook";

  ALL_OBJFILES (objfile)
    {
      struct breakpoint *b;
      struct gdbarch *gdbarch;
      struct breakpoint_objfile_data *bp_objfile_data;
      CORE_ADDR addr;
      struct explicit_location explicit_loc;

      bp_objfile_data = get_breakpoint_objfile_data (objfile);

      /* We prefer the SystemTap probe point if it exists.  */
      if (!bp_objfile_data->exception_searched)
	{
	  VEC (probe_p) *ret;

	  ret = find_probes_in_objfile (objfile, "libgcc", "unwind");

	  if (ret != NULL)
	    {
	      /* We are only interested in checking one element.  */
	      struct probe *p = VEC_index (probe_p, ret, 0);

	      if (!can_evaluate_probe_arguments (p))
		{
		  /* We cannot use the probe interface here, because it does
		     not know how to evaluate arguments.  */
		  VEC_free (probe_p, ret);
		  ret = NULL;
		}
	    }
	  bp_objfile_data->exception_probes = ret;
	  bp_objfile_data->exception_searched = 1;
	}

      if (bp_objfile_data->exception_probes != NULL)
	{
	  struct gdbarch *gdbarch = get_objfile_arch (objfile);
	  int i;
	  struct probe *probe;

	  for (i = 0;
	       VEC_iterate (probe_p,
			    bp_objfile_data->exception_probes,
			    i, probe);
	       ++i)
	    {
	      struct breakpoint *b;

	      b = create_internal_breakpoint (gdbarch,
					      get_probe_address (probe,
								 objfile),
					      bp_exception_master,
					      &internal_breakpoint_ops);
	      b->location
		= new_probe_location ("-probe-stap libgcc:unwind");
	      b->enable_state = bp_disabled;
	    }

	  continue;
	}

      /* Otherwise, try the hook function.  */

      if (msym_not_found_p (bp_objfile_data->exception_msym.minsym))
	continue;

      gdbarch = get_objfile_arch (objfile);

      if (bp_objfile_data->exception_msym.minsym == NULL)
	{
	  struct bound_minimal_symbol debug_hook;

	  debug_hook = lookup_minimal_symbol (func_name, NULL, objfile);
	  if (debug_hook.minsym == NULL)
	    {
	      bp_objfile_data->exception_msym.minsym = &msym_not_found;
	      continue;
	    }

	  bp_objfile_data->exception_msym = debug_hook;
	}

      addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym);
      addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr,
						 &current_target);
      b = create_internal_breakpoint (gdbarch, addr, bp_exception_master,
				      &internal_breakpoint_ops);
      initialize_explicit_location (&explicit_loc);
      explicit_loc.function_name = ASTRDUP (func_name);
      b->location = new_explicit_location (&explicit_loc);
      b->enable_state = bp_disabled;
    }
}

/* Does B have a location spec?  */

static int
breakpoint_event_location_empty_p (const struct breakpoint *b)
{
  return b->location != NULL && event_location_empty_p (b->location);
}

void
update_breakpoints_after_exec (void)
{
  struct breakpoint *b, *b_tmp;
  struct bp_location *bploc, **bplocp_tmp;

  /* We're about to delete breakpoints from GDB's lists.  If the
     INSERTED flag is true, GDB will try to lift the breakpoints by
     writing the breakpoints' "shadow contents" back into memory.  The
     "shadow contents" are NOT valid after an exec, so GDB should not
     do that.  Instead, the target is responsible from marking
     breakpoints out as soon as it detects an exec.  We don't do that
     here instead, because there may be other attempts to delete
     breakpoints after detecting an exec and before reaching here.  */
  ALL_BP_LOCATIONS (bploc, bplocp_tmp)
    if (bploc->pspace == current_program_space)
      gdb_assert (!bploc->inserted);

  ALL_BREAKPOINTS_SAFE (b, b_tmp)
  {
    if (b->pspace != current_program_space)
      continue;

    /* Solib breakpoints must be explicitly reset after an exec().  */
    if (b->type == bp_shlib_event)
      {
	delete_breakpoint (b);
	continue;
      }

    /* JIT breakpoints must be explicitly reset after an exec().  */
    if (b->type == bp_jit_event)
      {
	delete_breakpoint (b);
	continue;
      }

    /* Thread event breakpoints must be set anew after an exec(),
       as must overlay event and longjmp master breakpoints.  */
    if (b->type == bp_thread_event || b->type == bp_overlay_event
	|| b->type == bp_longjmp_master || b->type == bp_std_terminate_master
	|| b->type == bp_exception_master)
      {
	delete_breakpoint (b);
	continue;
      }

    /* Step-resume breakpoints are meaningless after an exec().  */
    if (b->type == bp_step_resume || b->type == bp_hp_step_resume)
      {
	delete_breakpoint (b);
	continue;
      }

    /* Just like single-step breakpoints.  */
    if (b->type == bp_single_step)
      {
	delete_breakpoint (b);
	continue;
      }

    /* Longjmp and longjmp-resume breakpoints are also meaningless
       after an exec.  */
    if (b->type == bp_longjmp || b->type == bp_longjmp_resume
	|| b->type == bp_longjmp_call_dummy
	|| b->type == bp_exception || b->type == bp_exception_resume)
      {
	delete_breakpoint (b);
	continue;
      }

    if (b->type == bp_catchpoint)
      {
        /* For now, none of the bp_catchpoint breakpoints need to
           do anything at this point.  In the future, if some of
           the catchpoints need to something, we will need to add
           a new method, and call this method from here.  */
        continue;
      }

    /* bp_finish is a special case.  The only way we ought to be able
       to see one of these when an exec() has happened, is if the user
       caught a vfork, and then said "finish".  Ordinarily a finish just
       carries them to the call-site of the current callee, by setting
       a temporary bp there and resuming.  But in this case, the finish
       will carry them entirely through the vfork & exec.

       We don't want to allow a bp_finish to remain inserted now.  But
       we can't safely delete it, 'cause finish_command has a handle to
       the bp on a bpstat, and will later want to delete it.  There's a
       chance (and I've seen it happen) that if we delete the bp_finish
       here, that its storage will get reused by the time finish_command
       gets 'round to deleting the "use to be a bp_finish" breakpoint.
       We really must allow finish_command to delete a bp_finish.

       In the absence of a general solution for the "how do we know
       it's safe to delete something others may have handles to?"
       problem, what we'll do here is just uninsert the bp_finish, and
       let finish_command delete it.

       (We know the bp_finish is "doomed" in the sense that it's
       momentary, and will be deleted as soon as finish_command sees
       the inferior stopped.  So it doesn't matter that the bp's
       address is probably bogus in the new a.out, unlike e.g., the
       solib breakpoints.)  */

    if (b->type == bp_finish)
      {
	continue;
      }

    /* Without a symbolic address, we have little hope of the
       pre-exec() address meaning the same thing in the post-exec()
       a.out.  */
    if (breakpoint_event_location_empty_p (b))
      {
	delete_breakpoint (b);
	continue;
      }
  }
}

int
detach_breakpoints (ptid_t ptid)
{
  struct bp_location *bl, **blp_tmp;
  int val = 0;
  struct cleanup *old_chain = save_inferior_ptid ();
  struct inferior *inf = current_inferior ();

  if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid))
    error (_("Cannot detach breakpoints of inferior_ptid"));

  /* Set inferior_ptid; remove_breakpoint_1 uses this global.  */
  inferior_ptid = ptid;
  ALL_BP_LOCATIONS (bl, blp_tmp)
  {
    if (bl->pspace != inf->pspace)
      continue;

    /* This function must physically remove breakpoints locations
       from the specified ptid, without modifying the breakpoint
       package's state.  Locations of type bp_loc_other are only
       maintained at GDB side.  So, there is no need to remove
       these bp_loc_other locations.  Moreover, removing these
       would modify the breakpoint package's state.  */
    if (bl->loc_type == bp_loc_other)
      continue;

    if (bl->inserted)
      val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT);
  }

  do_cleanups (old_chain);
  return val;
}

/* Remove the breakpoint location BL from the current address space.
   Note that this is used to detach breakpoints from a child fork.
   When we get here, the child isn't in the inferior list, and neither
   do we have objects to represent its address space --- we should
   *not* look at bl->pspace->aspace here.  */

static int
remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason)
{
  int val;

  /* BL is never in moribund_locations by our callers.  */
  gdb_assert (bl->owner != NULL);

  /* The type of none suggests that owner is actually deleted.
     This should not ever happen.  */
  gdb_assert (bl->owner->type != bp_none);

  if (bl->loc_type == bp_loc_software_breakpoint
      || bl->loc_type == bp_loc_hardware_breakpoint)
    {
      /* "Normal" instruction breakpoint: either the standard
	 trap-instruction bp (bp_breakpoint), or a
	 bp_hardware_breakpoint.  */

      /* First check to see if we have to handle an overlay.  */
      if (overlay_debugging == ovly_off
	  || bl->section == NULL
	  || !(section_is_overlay (bl->section)))
	{
	  /* No overlay handling: just remove the breakpoint.  */

	  /* If we're trying to uninsert a memory breakpoint that we
	     know is set in a dynamic object that is marked
	     shlib_disabled, then either the dynamic object was
	     removed with "remove-symbol-file" or with
	     "nosharedlibrary".  In the former case, we don't know
	     whether another dynamic object might have loaded over the
	     breakpoint's address -- the user might well let us know
	     about it next with add-symbol-file (the whole point of
	     add-symbol-file is letting the user manually maintain a
	     list of dynamically loaded objects).  If we have the
	     breakpoint's shadow memory, that is, this is a software
	     breakpoint managed by GDB, check whether the breakpoint
	     is still inserted in memory, to avoid overwriting wrong
	     code with stale saved shadow contents.  Note that HW
	     breakpoints don't have shadow memory, as they're
	     implemented using a mechanism that is not dependent on
	     being able to modify the target's memory, and as such
	     they should always be removed.  */
	  if (bl->shlib_disabled
	      && bl->target_info.shadow_len != 0
	      && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info))
	    val = 0;
	  else
	    val = bl->owner->ops->remove_location (bl, reason);
	}
      else
	{
	  /* This breakpoint is in an overlay section.
	     Did we set a breakpoint at the LMA?  */
	  if (!overlay_events_enabled)
	      {
		/* Yes -- overlay event support is not active, so we
		   should have set a breakpoint at the LMA.  Remove it.  
		*/
		/* Ignore any failures: if the LMA is in ROM, we will
		   have already warned when we failed to insert it.  */
		if (bl->loc_type == bp_loc_hardware_breakpoint)
		  target_remove_hw_breakpoint (bl->gdbarch,
					       &bl->overlay_target_info);
		else
		  target_remove_breakpoint (bl->gdbarch,
					    &bl->overlay_target_info,
					    reason);
	      }
	  /* Did we set a breakpoint at the VMA? 
	     If so, we will have marked the breakpoint 'inserted'.  */
	  if (bl->inserted)
	    {
	      /* Yes -- remove it.  Previously we did not bother to
		 remove the breakpoint if the section had been
		 unmapped, but let's not rely on that being safe.  We
		 don't know what the overlay manager might do.  */

	      /* However, we should remove *software* breakpoints only
		 if the section is still mapped, or else we overwrite
		 wrong code with the saved shadow contents.  */
	      if (bl->loc_type == bp_loc_hardware_breakpoint
		  || section_is_mapped (bl->section))
		val = bl->owner->ops->remove_location (bl, reason);
	      else
		val = 0;
	    }
	  else
	    {
	      /* No -- not inserted, so no need to remove.  No error.  */
	      val = 0;
	    }
	}

      /* In some cases, we might not be able to remove a breakpoint in
	 a shared library that has already been removed, but we have
	 not yet processed the shlib unload event.  Similarly for an
	 unloaded add-symbol-file object - the user might not yet have
	 had the chance to remove-symbol-file it.  shlib_disabled will
	 be set if the library/object has already been removed, but
	 the breakpoint hasn't been uninserted yet, e.g., after
	 "nosharedlibrary" or "remove-symbol-file" with breakpoints
	 always-inserted mode.  */
      if (val
	  && (bl->loc_type == bp_loc_software_breakpoint
	      && (bl->shlib_disabled
		  || solib_name_from_address (bl->pspace, bl->address)
		  || shared_objfile_contains_address_p (bl->pspace,
							bl->address))))
	val = 0;

      if (val)
	return val;
      bl->inserted = (reason == DETACH_BREAKPOINT);
    }
  else if (bl->loc_type == bp_loc_hardware_watchpoint)
    {
      gdb_assert (bl->owner->ops != NULL
		  && bl->owner->ops->remove_location != NULL);

      bl->inserted = (reason == DETACH_BREAKPOINT);
      bl->owner->ops->remove_location (bl, reason);

      /* Failure to remove any of the hardware watchpoints comes here.  */
      if (reason == REMOVE_BREAKPOINT && bl->inserted)
	warning (_("Could not remove hardware watchpoint %d."),
		 bl->owner->number);
    }
  else if (bl->owner->type == bp_catchpoint
           && breakpoint_enabled (bl->owner)
           && !bl->duplicate)
    {
      gdb_assert (bl->owner->ops != NULL
		  && bl->owner->ops->remove_location != NULL);

      val = bl->owner->ops->remove_location (bl, reason);
      if (val)
	return val;

      bl->inserted = (reason == DETACH_BREAKPOINT);
    }

  return 0;
}

static int
remove_breakpoint (struct bp_location *bl)
{
  int ret;
  struct cleanup *old_chain;

  /* BL is never in moribund_locations by our callers.  */
  gdb_assert (bl->owner != NULL);

  /* The type of none suggests that owner is actually deleted.
     This should not ever happen.  */
  gdb_assert (bl->owner->type != bp_none);

  old_chain = save_current_space_and_thread ();

  switch_to_program_space_and_thread (bl->pspace);

  ret = remove_breakpoint_1 (bl, REMOVE_BREAKPOINT);

  do_cleanups (old_chain);
  return ret;
}

/* Clear the "inserted" flag in all breakpoints.  */

void
mark_breakpoints_out (void)
{
  struct bp_location *bl, **blp_tmp;

  ALL_BP_LOCATIONS (bl, blp_tmp)
    if (bl->pspace == current_program_space)
      bl->inserted = 0;
}

/* Clear the "inserted" flag in all breakpoints and delete any
   breakpoints which should go away between runs of the program.

   Plus other such housekeeping that has to be done for breakpoints
   between runs.

   Note: this function gets called at the end of a run (by
   generic_mourn_inferior) and when a run begins (by
   init_wait_for_inferior).  */



void
breakpoint_init_inferior (enum inf_context context)
{
  struct breakpoint *b, *b_tmp;
  struct bp_location *bl;
  int ix;
  struct program_space *pspace = current_program_space;

  /* If breakpoint locations are shared across processes, then there's
     nothing to do.  */
  if (gdbarch_has_global_breakpoints (target_gdbarch ()))
    return;

  mark_breakpoints_out ();

  ALL_BREAKPOINTS_SAFE (b, b_tmp)
  {
    if (b->loc && b->loc->pspace != pspace)
      continue;

    switch (b->type)
      {
      case bp_call_dummy:
      case bp_longjmp_call_dummy:

	/* If the call dummy breakpoint is at the entry point it will
	   cause problems when the inferior is rerun, so we better get
	   rid of it.  */

      case bp_watchpoint_scope:

	/* Also get rid of scope breakpoints.  */

      case bp_shlib_event:

	/* Also remove solib event breakpoints.  Their addresses may
	   have changed since the last time we ran the program.
	   Actually we may now be debugging against different target;
	   and so the solib backend that installed this breakpoint may
	   not be used in by the target.  E.g.,

	   (gdb) file prog-linux
	   (gdb) run               # native linux target
	   ...
	   (gdb) kill
	   (gdb) file prog-win.exe
	   (gdb) tar rem :9999     # remote Windows gdbserver.
	*/

      case bp_step_resume:

	/* Also remove step-resume breakpoints.  */

      case bp_single_step:

	/* Also remove single-step breakpoints.  */

	delete_breakpoint (b);
	break;

      case bp_watchpoint:
      case bp_hardware_watchpoint:
      case bp_read_watchpoint:
      case bp_access_watchpoint:
	{
	  struct watchpoint *w = (struct watchpoint *) b;

	  /* Likewise for watchpoints on local expressions.  */
	  if (w->exp_valid_block != NULL)
	    delete_breakpoint (b);
	  else
	    {
	      /* Get rid of existing locations, which are no longer
		 valid.  New ones will be created in
		 update_watchpoint, when the inferior is restarted.
		 The next update_global_location_list call will
		 garbage collect them.  */
	      b->loc = NULL;

	      if (context == inf_starting)
		{
		  /* Reset val field to force reread of starting value in
		     insert_breakpoints.  */
		  if (w->val)
		    value_free (w->val);
		  w->val = NULL;
		  w->val_valid = 0;
		}
	    }
	}
	break;
      default:
	break;
      }
  }

  /* Get rid of the moribund locations.  */
  for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix)
    decref_bp_location (&bl);
  VEC_free (bp_location_p, moribund_locations);
}

/* These functions concern about actual breakpoints inserted in the
   target --- to e.g. check if we need to do decr_pc adjustment or if
   we need to hop over the bkpt --- so we check for address space
   match, not program space.  */

/* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint
   exists at PC.  It returns ordinary_breakpoint_here if it's an
   ordinary breakpoint, or permanent_breakpoint_here if it's a
   permanent breakpoint.
   - When continuing from a location with an ordinary breakpoint, we
     actually single step once before calling insert_breakpoints.
   - When continuing from a location with a permanent breakpoint, we
     need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by
     the target, to advance the PC past the breakpoint.  */

enum breakpoint_here
breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc)
{
  struct bp_location *bl, **blp_tmp;
  int any_breakpoint_here = 0;

  ALL_BP_LOCATIONS (bl, blp_tmp)
    {
      if (bl->loc_type != bp_loc_software_breakpoint
	  && bl->loc_type != bp_loc_hardware_breakpoint)
	continue;

      /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL.  */
      if ((breakpoint_enabled (bl->owner)
	   || bl->permanent)
	  && breakpoint_location_address_match (bl, aspace, pc))
	{
	  if (overlay_debugging 
	      && section_is_overlay (bl->section)
	      && !section_is_mapped (bl->section))
	    continue;		/* unmapped overlay -- can't be a match */
	  else if (bl->permanent)
	    return permanent_breakpoint_here;
	  else
	    any_breakpoint_here = 1;
	}
    }

  return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here;
}

/* See breakpoint.h.  */

int
breakpoint_in_range_p (struct address_space *aspace,
		       CORE_ADDR addr, ULONGEST len)
{
  struct bp_location *bl, **blp_tmp;

  ALL_BP_LOCATIONS (bl, blp_tmp)
    {
      if (bl->loc_type != bp_loc_software_breakpoint
	  && bl->loc_type != bp_loc_hardware_breakpoint)
	continue;

      if ((breakpoint_enabled (bl->owner)
	   || bl->permanent)
	  && breakpoint_location_address_range_overlap (bl, aspace,
							addr, len))
	{
	  if (overlay_debugging
	      && section_is_overlay (bl->section)
	      && !section_is_mapped (bl->section))
	    {
	      /* Unmapped overlay -- can't be a match.  */
	      continue;
	    }

	  return 1;
	}
    }

  return 0;
}

/* Return true if there's a moribund breakpoint at PC.  */

int
moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc)
{
  struct bp_location *loc;
  int ix;

  for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix)
    if (breakpoint_location_address_match (loc, aspace, pc))
      return 1;

  return 0;
}

/* Returns non-zero iff BL is inserted at PC, in address space
   ASPACE.  */

static int
bp_location_inserted_here_p (struct bp_location *bl,
			     struct address_space *aspace, CORE_ADDR pc)
{
  if (bl->inserted
      && breakpoint_address_match (bl->pspace->aspace, bl->address,
				   aspace, pc))
    {
      if (overlay_debugging
	  && section_is_overlay (bl->section)
	  && !section_is_mapped (bl->section))
	return 0;		/* unmapped overlay -- can't be a match */
      else
	return 1;
    }
  return 0;
}

/* Returns non-zero iff there's a breakpoint inserted at PC.  */

int
breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc)
{
  struct bp_location **blp, **blp_tmp = NULL;

  ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc)
    {
      struct bp_location *bl = *blp;

      if (bl->loc_type != bp_loc_software_breakpoint
	  && bl->loc_type != bp_loc_hardware_breakpoint)
	continue;

      if (bp_location_inserted_here_p (bl, aspace, pc))
	return 1;
    }
  return 0;
}

/* This function returns non-zero iff there is a software breakpoint
   inserted at PC.  */

int
software_breakpoint_inserted_here_p (struct address_space *aspace,
				     CORE_ADDR pc)
{
  struct bp_location **blp, **blp_tmp = NULL;

  ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc)
    {
      struct bp_location *bl = *blp;

      if (bl->loc_type != bp_loc_software_breakpoint)
	continue;

      if (bp_location_inserted_here_p (bl, aspace, pc))
	return 1;
    }

  return 0;
}

/* See breakpoint.h.  */

int
hardware_breakpoint_inserted_here_p (struct address_space *aspace,
				     CORE_ADDR pc)
{
  struct bp_location **blp, **blp_tmp = NULL;

  ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc)
    {
      struct bp_location *bl = *blp;

      if (bl->loc_type != bp_loc_hardware_breakpoint)
	continue;

      if (bp_location_inserted_here_p (bl, aspace, pc))
	return 1;
    }

  return 0;
}

int
hardware_watchpoint_inserted_in_range (struct address_space *aspace,
				       CORE_ADDR addr, ULONGEST len)
{
  struct breakpoint *bpt;

  ALL_BREAKPOINTS (bpt)
    {
      struct bp_location *loc;

      if (bpt->type != bp_hardware_watchpoint
	  && bpt->type != bp_access_watchpoint)
	continue;

      if (!breakpoint_enabled (bpt))
	continue;

      for (loc = bpt->loc; loc; loc = loc->next)
	if (loc->pspace->aspace == aspace && loc->inserted)
	  {
	    CORE_ADDR l, h;

	    /* Check for intersection.  */
	    l = std::max<CORE_ADDR> (loc->address, addr);
	    h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len);
	    if (l < h)
	      return 1;
	  }
    }
  return 0;
}


/* bpstat stuff.  External routines' interfaces are documented
   in breakpoint.h.  */

int
is_catchpoint (struct breakpoint *ep)
{
  return (ep->type == bp_catchpoint);
}

/* Frees any storage that is part of a bpstat.  Does not walk the
   'next' chain.  */

static void
bpstat_free (bpstat bs)
{
  if (bs->old_val != NULL)
    value_free (bs->old_val);
  decref_counted_command_line (&bs->commands);
  decref_bp_location (&bs->bp_location_at);
  xfree (bs);
}

/* Clear a bpstat so that it says we are not at any breakpoint.
   Also free any storage that is part of a bpstat.  */

void
bpstat_clear (bpstat *bsp)
{
  bpstat p;
  bpstat q;

  if (bsp == 0)
    return;
  p = *bsp;
  while (p != NULL)
    {
      q = p->next;
      bpstat_free (p);
      p = q;
    }
  *bsp = NULL;
}

/* Return a copy of a bpstat.  Like "bs1 = bs2" but all storage that
   is part of the bpstat is copied as well.  */

bpstat
bpstat_copy (bpstat bs)
{
  bpstat p = NULL;
  bpstat tmp;
  bpstat retval = NULL;

  if (bs == NULL)
    return bs;

  for (; bs != NULL; bs = bs->next)
    {
      tmp = (bpstat) xmalloc (sizeof (*tmp));
      memcpy (tmp, bs, sizeof (*tmp));
      incref_counted_command_line (tmp->commands);
      incref_bp_location (tmp->bp_location_at);
      if (bs->old_val != NULL)
	{
	  tmp->old_val = value_copy (bs->old_val);
	  release_value (tmp->old_val);
	}

      if (p == NULL)
	/* This is the first thing in the chain.  */
	retval = tmp;
      else
	p->next = tmp;
      p = tmp;
    }
  p->next = NULL;
  return retval;
}

/* Find the bpstat associated with this breakpoint.  */

bpstat
bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint)
{
  if (bsp == NULL)
    return NULL;

  for (; bsp != NULL; bsp = bsp->next)
    {
      if (bsp->breakpoint_at == breakpoint)
	return bsp;
    }
  return NULL;
}

/* See breakpoint.h.  */

int
bpstat_explains_signal (bpstat bsp, enum gdb_signal sig)
{
  for (; bsp != NULL; bsp = bsp->next)
    {
      if (bsp->breakpoint_at == NULL)
	{
	  /* A moribund location can never explain a signal other than
	     GDB_SIGNAL_TRAP.  */
	  if (sig == GDB_SIGNAL_TRAP)
	    return 1;
	}
      else
	{
	  if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at,
							sig))
	    return 1;
	}
    }

  return 0;
}

/* Put in *NUM the breakpoint number of the first breakpoint we are
   stopped at.  *BSP upon return is a bpstat which points to the
   remaining breakpoints stopped at (but which is not guaranteed to be
   good for anything but further calls to bpstat_num).

   Return 0 if passed a bpstat which does not indicate any breakpoints.
   Return -1 if stopped at a breakpoint that has been deleted since
   we set it.
   Return 1 otherwise.  */

int
bpstat_num (bpstat *bsp, int *num)
{
  struct breakpoint *b;

  if ((*bsp) == NULL)
    return 0;			/* No more breakpoint values */

  /* We assume we'll never have several bpstats that correspond to a
     single breakpoint -- otherwise, this function might return the
     same number more than once and this will look ugly.  */
  b = (*bsp)->breakpoint_at;
  *bsp = (*bsp)->next;
  if (b == NULL)
    return -1;			/* breakpoint that's been deleted since */

  *num = b->number;		/* We have its number */
  return 1;
}

/* See breakpoint.h.  */

void
bpstat_clear_actions (void)
{
  struct thread_info *tp;
  bpstat bs;

  if (ptid_equal (inferior_ptid, null_ptid))
    return;

  tp = find_thread_ptid (inferior_ptid);
  if (tp == NULL)
    return;

  for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next)
    {
      decref_counted_command_line (&bs->commands);

      if (bs->old_val != NULL)
	{
	  value_free (bs->old_val);
	  bs->old_val = NULL;
	}
    }
}

/* Called when a command is about to proceed the inferior.  */

static void
breakpoint_about_to_proceed (void)
{
  if (!ptid_equal (inferior_ptid, null_ptid))
    {
      struct thread_info *tp = inferior_thread ();

      /* Allow inferior function calls in breakpoint commands to not
	 interrupt the command list.  When the call finishes
	 successfully, the inferior will be standing at the same
	 breakpoint as if nothing happened.  */
      if (tp->control.in_infcall)
	return;
    }

  breakpoint_proceeded = 1;
}

/* Stub for cleaning up our state if we error-out of a breakpoint
   command.  */
static void
cleanup_executing_breakpoints (void *ignore)
{
  executing_breakpoint_commands = 0;
}

/* Return non-zero iff CMD as the first line of a command sequence is `silent'
   or its equivalent.  */

static int
command_line_is_silent (struct command_line *cmd)
{
  return cmd && (strcmp ("silent", cmd->line) == 0);
}

/* Execute all the commands associated with all the breakpoints at
   this location.  Any of these commands could cause the process to
   proceed beyond this point, etc.  We look out for such changes by
   checking the global "breakpoint_proceeded" after each command.

   Returns true if a breakpoint command resumed the inferior.  In that
   case, it is the caller's responsibility to recall it again with the
   bpstat of the current thread.  */

static int
bpstat_do_actions_1 (bpstat *bsp)
{
  bpstat bs;
  struct cleanup *old_chain;
  int again = 0;

  /* Avoid endless recursion if a `source' command is contained
     in bs->commands.  */
  if (executing_breakpoint_commands)
    return 0;

  executing_breakpoint_commands = 1;
  old_chain = make_cleanup (cleanup_executing_breakpoints, 0);

  prevent_dont_repeat ();

  /* This pointer will iterate over the list of bpstat's.  */
  bs = *bsp;

  breakpoint_proceeded = 0;
  for (; bs != NULL; bs = bs->next)
    {
      struct counted_command_line *ccmd;
      struct command_line *cmd;
      struct cleanup *this_cmd_tree_chain;

      /* Take ownership of the BSP's command tree, if it has one.

         The command tree could legitimately contain commands like
         'step' and 'next', which call clear_proceed_status, which
         frees stop_bpstat's command tree.  To make sure this doesn't
         free the tree we're executing out from under us, we need to
         take ownership of the tree ourselves.  Since a given bpstat's
         commands are only executed once, we don't need to copy it; we
         can clear the pointer in the bpstat, and make sure we free
         the tree when we're done.  */
      ccmd = bs->commands;
      bs->commands = NULL;
      this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd);
      cmd = ccmd ? ccmd->commands : NULL;
      if (command_line_is_silent (cmd))
	{
	  /* The action has been already done by bpstat_stop_status.  */
	  cmd = cmd->next;
	}

      while (cmd != NULL)
	{
	  execute_control_command (cmd);

	  if (breakpoint_proceeded)
	    break;
	  else
	    cmd = cmd->next;
	}

      /* We can free this command tree now.  */
      do_cleanups (this_cmd_tree_chain);

      if (breakpoint_proceeded)
	{
	  if (current_ui->async)
	    /* If we are in async mode, then the target might be still
	       running, not stopped at any breakpoint, so nothing for
	       us to do here -- just return to the event loop.  */
	    ;
	  else
	    /* In sync mode, when execute_control_command returns
	       we're already standing on the next breakpoint.
	       Breakpoint commands for that stop were not run, since
	       execute_command does not run breakpoint commands --
	       only command_line_handler does, but that one is not
	       involved in execution of breakpoint commands.  So, we
	       can now execute breakpoint commands.  It should be
	       noted that making execute_command do bpstat actions is
	       not an option -- in this case we'll have recursive
	       invocation of bpstat for each breakpoint with a
	       command, and can easily blow up GDB stack.  Instead, we
	       return true, which will trigger the caller to recall us
	       with the new stop_bpstat.  */
	    again = 1;
	  break;
	}
    }
  do_cleanups (old_chain);
  return again;
}

void
bpstat_do_actions (void)
{
  struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup ();

  /* Do any commands attached to breakpoint we are stopped at.  */
  while (!ptid_equal (inferior_ptid, null_ptid)
	 && target_has_execution
	 && !is_exited (inferior_ptid)
	 && !is_executing (inferior_ptid))
    /* Since in sync mode, bpstat_do_actions may resume the inferior,
       and only return when it is stopped at the next breakpoint, we
       keep doing breakpoint actions until it returns false to
       indicate the inferior was not resumed.  */
    if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat))
      break;

  discard_cleanups (cleanup_if_error);
}

/* Print out the (old or new) value associated with a watchpoint.  */

static void
watchpoint_value_print (struct value *val, struct ui_file *stream)
{
  if (val == NULL)
    fprintf_unfiltered (stream, _("<unreadable>"));
  else
    {
      struct value_print_options opts;
      get_user_print_options (&opts);
      value_print (val, stream, &opts);
    }
}

/* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if
   debugging multiple threads.  */

void
maybe_print_thread_hit_breakpoint (struct ui_out *uiout)
{
  if (ui_out_is_mi_like_p (uiout))
    return;

  ui_out_text (uiout, "\n");

  if (show_thread_that_caused_stop ())
    {
      const char *name;
      struct thread_info *thr = inferior_thread ();

      ui_out_text (uiout, "Thread ");
      ui_out_field_fmt (uiout, "thread-id", "%s", print_thread_id (thr));

      name = thr->name != NULL ? thr->name : target_thread_name (thr);
      if (name != NULL)
	{
	  ui_out_text (uiout, " \"");
	  ui_out_field_fmt (uiout, "name", "%s", name);
	  ui_out_text (uiout, "\"");
	}

      ui_out_text (uiout, " hit ");
    }
}

/* Generic routine for printing messages indicating why we
   stopped.  The behavior of this function depends on the value
   'print_it' in the bpstat structure.  Under some circumstances we
   may decide not to print anything here and delegate the task to
   normal_stop().  */

static enum print_stop_action
print_bp_stop_message (bpstat bs)
{
  switch (bs->print_it)
    {
    case print_it_noop:
      /* Nothing should be printed for this bpstat entry.  */
      return PRINT_UNKNOWN;
      break;

    case print_it_done:
      /* We still want to print the frame, but we already printed the
         relevant messages.  */
      return PRINT_SRC_AND_LOC;
      break;

    case print_it_normal:
      {
	struct breakpoint *b = bs->breakpoint_at;

	/* bs->breakpoint_at can be NULL if it was a momentary breakpoint
	   which has since been deleted.  */
	if (b == NULL)
	  return PRINT_UNKNOWN;

	/* Normal case.  Call the breakpoint's print_it method.  */
	return b->ops->print_it (bs);
      }
      break;

    default:
      internal_error (__FILE__, __LINE__,
		      _("print_bp_stop_message: unrecognized enum value"));
      break;
    }
}

/* A helper function that prints a shared library stopped event.  */

static void
print_solib_event (int is_catchpoint)
{
  int any_deleted
    = !VEC_empty (char_ptr, current_program_space->deleted_solibs);
  int any_added
    = !VEC_empty (so_list_ptr, current_program_space->added_solibs);

  if (!is_catchpoint)
    {
      if (any_added || any_deleted)
	ui_out_text (current_uiout,
		     _("Stopped due to shared library event:\n"));
      else
	ui_out_text (current_uiout,
		     _("Stopped due to shared library event (no "
		       "libraries added or removed)\n"));
    }

  if (ui_out_is_mi_like_p (current_uiout))
    ui_out_field_string (current_uiout, "reason",
			 async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT));

  if (any_deleted)
    {
      struct cleanup *cleanup;
      char *name;
      int ix;

      ui_out_text (current_uiout, _("  Inferior unloaded "));
      cleanup = make_cleanup_ui_out_list_begin_end (current_uiout,
						    "removed");
      for (ix = 0;
	   VEC_iterate (char_ptr, current_program_space->deleted_solibs,
			ix, name);
	   ++ix)
	{
	  if (ix > 0)
	    ui_out_text (current_uiout, "    ");
	  ui_out_field_string (current_uiout, "library", name);
	  ui_out_text (current_uiout, "\n");
	}

      do_cleanups (cleanup);
    }

  if (any_added)
    {
      struct so_list *iter;
      int ix;
      struct cleanup *cleanup;

      ui_out_text (current_uiout, _("  Inferior loaded "));
      cleanup = make_cleanup_ui_out_list_begin_end (current_uiout,
						    "added");
      for (ix = 0;
	   VEC_iterate (so_list_ptr, current_program_space->added_solibs,
			ix, iter);
	   ++ix)
	{
	  if (ix > 0)
	    ui_out_text (current_uiout, "    ");
	  ui_out_field_string (current_uiout, "library", iter->so_name);
	  ui_out_text (current_uiout, "\n");
	}

      do_cleanups (cleanup);
    }
}

/* Print a message indicating what happened.  This is called from
   normal_stop().  The input to this routine is the head of the bpstat
   list - a list of the eventpoints that caused this stop.  KIND is
   the target_waitkind for the stopping event.  This
   routine calls the generic print routine for printing a message
   about reasons for stopping.  This will print (for example) the
   "Breakpoint n," part of the output.  The return value of this
   routine is one of:

   PRINT_UNKNOWN: Means we printed nothing.
   PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent
   code to print the location.  An example is 
   "Breakpoint 1, " which should be followed by
   the location.
   PRINT_SRC_ONLY: Means we printed something, but there is no need
   to also print the location part of the message.
   An example is the catch/throw messages, which
   don't require a location appended to the end.
   PRINT_NOTHING: We have done some printing and we don't need any 
   further info to be printed.  */

enum print_stop_action
bpstat_print (bpstat bs, int kind)
{
  enum print_stop_action val;

  /* Maybe another breakpoint in the chain caused us to stop.
     (Currently all watchpoints go on the bpstat whether hit or not.
     That probably could (should) be changed, provided care is taken
     with respect to bpstat_explains_signal).  */
  for (; bs; bs = bs->next)
    {
      val = print_bp_stop_message (bs);
      if (val == PRINT_SRC_ONLY 
	  || val == PRINT_SRC_AND_LOC 
	  || val == PRINT_NOTHING)
	return val;
    }

  /* If we had hit a shared library event breakpoint,
     print_bp_stop_message would print out this message.  If we hit an
     OS-level shared library event, do the same thing.  */
  if (kind == TARGET_WAITKIND_LOADED)
    {
      print_solib_event (0);
      return PRINT_NOTHING;
    }

  /* We reached the end of the chain, or we got a null BS to start
     with and nothing was printed.  */
  return PRINT_UNKNOWN;
}

/* Evaluate the expression EXP and return 1 if value is zero.
   This returns the inverse of the condition because it is called
   from catch_errors which returns 0 if an exception happened, and if an
   exception happens we want execution to stop.
   The argument is a "struct expression *" that has been cast to a
   "void *" to make it pass through catch_errors.  */

static int
breakpoint_cond_eval (void *exp)
{
  struct value *mark = value_mark ();
  int i = !value_true (evaluate_expression ((struct expression *) exp));

  value_free_to_mark (mark);
  return i;
}

/* Allocate a new bpstat.  Link it to the FIFO list by BS_LINK_POINTER.  */

static bpstat
bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer)
{
  bpstat bs;

  bs = (bpstat) xmalloc (sizeof (*bs));
  bs->next = NULL;
  **bs_link_pointer = bs;
  *bs_link_pointer = &bs->next;
  bs->breakpoint_at = bl->owner;
  bs->bp_location_at = bl;
  incref_bp_location (bl);
  /* If the condition is false, etc., don't do the commands.  */
  bs->commands = NULL;
  bs->old_val = NULL;
  bs->print_it = print_it_normal;
  return bs;
}

/* The target has stopped with waitstatus WS.  Check if any hardware
   watchpoints have triggered, according to the target.  */

int
watchpoints_triggered (struct target_waitstatus *ws)
{
  int stopped_by_watchpoint = target_stopped_by_watchpoint ();
  CORE_ADDR addr;
  struct breakpoint *b;

  if (!stopped_by_watchpoint)
    {
      /* We were not stopped by a watchpoint.  Mark all watchpoints
	 as not triggered.  */
      ALL_BREAKPOINTS (b)
	if (is_hardware_watchpoint (b))
	  {
	    struct watchpoint *w = (struct watchpoint *) b;

	    w->watchpoint_triggered = watch_triggered_no;
	  }

      return 0;
    }

  if (!target_stopped_data_address (&current_target, &addr))
    {
      /* We were stopped by a watchpoint, but we don't know where.
	 Mark all watchpoints as unknown.  */
      ALL_BREAKPOINTS (b)
	if (is_hardware_watchpoint (b))
	  {
	    struct watchpoint *w = (struct watchpoint *) b;

	    w->watchpoint_triggered = watch_triggered_unknown;
	  }

      return 1;
    }

  /* The target could report the data address.  Mark watchpoints
     affected by this data address as triggered, and all others as not
     triggered.  */

  ALL_BREAKPOINTS (b)
    if (is_hardware_watchpoint (b))
      {
	struct watchpoint *w = (struct watchpoint *) b;
	struct bp_location *loc;

	w->watchpoint_triggered = watch_triggered_no;
	for (loc = b->loc; loc; loc = loc->next)
	  {
	    if (is_masked_watchpoint (b))
	      {
		CORE_ADDR newaddr = addr & w->hw_wp_mask;
		CORE_ADDR start = loc->address & w->hw_wp_mask;

		if (newaddr == start)
		  {
		    w->watchpoint_triggered = watch_triggered_yes;
		    break;
		  }
	      }
	    /* Exact match not required.  Within range is sufficient.  */
	    else if (target_watchpoint_addr_within_range (&current_target,
							 addr, loc->address,
							 loc->length))
	      {
		w->watchpoint_triggered = watch_triggered_yes;
		break;
	      }
	  }
      }

  return 1;
}

/* Possible return values for watchpoint_check (this can't be an enum
   because of check_errors).  */
/* The watchpoint has been deleted.  */
#define WP_DELETED 1
/* The value has changed.  */
#define WP_VALUE_CHANGED 2
/* The value has not changed.  */
#define WP_VALUE_NOT_CHANGED 3
/* Ignore this watchpoint, no matter if the value changed or not.  */
#define WP_IGNORE 4

#define BP_TEMPFLAG 1
#define BP_HARDWAREFLAG 2

/* Evaluate watchpoint condition expression and check if its value
   changed.

   P should be a pointer to struct bpstat, but is defined as a void *
   in order for this function to be usable with catch_errors.  */

static int
watchpoint_check (void *p)
{
  bpstat bs = (bpstat) p;
  struct watchpoint *b;
  struct frame_info *fr;
  int within_current_scope;

  /* BS is built from an existing struct breakpoint.  */
  gdb_assert (bs->breakpoint_at != NULL);
  b = (struct watchpoint *) bs->breakpoint_at;

  /* If this is a local watchpoint, we only want to check if the
     watchpoint frame is in scope if the current thread is the thread
     that was used to create the watchpoint.  */
  if (!watchpoint_in_thread_scope (b))
    return WP_IGNORE;

  if (b->exp_valid_block == NULL)
    within_current_scope = 1;
  else
    {
      struct frame_info *frame = get_current_frame ();
      struct gdbarch *frame_arch = get_frame_arch (frame);
      CORE_ADDR frame_pc = get_frame_pc (frame);

      /* stack_frame_destroyed_p() returns a non-zero value if we're
	 still in the function but the stack frame has already been
	 invalidated.  Since we can't rely on the values of local
	 variables after the stack has been destroyed, we are treating
	 the watchpoint in that state as `not changed' without further
	 checking.  Don't mark watchpoints as changed if the current
	 frame is in an epilogue - even if they are in some other
	 frame, our view of the stack is likely to be wrong and
	 frame_find_by_id could error out.  */
      if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc))
	return WP_IGNORE;

      fr = frame_find_by_id (b->watchpoint_frame);
      within_current_scope = (fr != NULL);

      /* If we've gotten confused in the unwinder, we might have
	 returned a frame that can't describe this variable.  */
      if (within_current_scope)
	{
	  struct symbol *function;

	  function = get_frame_function (fr);
	  if (function == NULL
	      || !contained_in (b->exp_valid_block,
				SYMBOL_BLOCK_VALUE (function)))
	    within_current_scope = 0;
	}

      if (within_current_scope)
	/* If we end up stopping, the current frame will get selected
	   in normal_stop.  So this call to select_frame won't affect
	   the user.  */
	select_frame (fr);
    }

  if (within_current_scope)
    {
      /* We use value_{,free_to_}mark because it could be a *long*
         time before we return to the command level and call
         free_all_values.  We can't call free_all_values because we
         might be in the middle of evaluating a function call.  */

      int pc = 0;
      struct value *mark;
      struct value *new_val;

      if (is_masked_watchpoint (&b->base))
	/* Since we don't know the exact trigger address (from
	   stopped_data_address), just tell the user we've triggered
	   a mask watchpoint.  */
	return WP_VALUE_CHANGED;

      mark = value_mark ();
      fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0);

      if (b->val_bitsize != 0)
	new_val = extract_bitfield_from_watchpoint_value (b, new_val);

      /* We use value_equal_contents instead of value_equal because
	 the latter coerces an array to a pointer, thus comparing just
	 the address of the array instead of its contents.  This is
	 not what we want.  */
      if ((b->val != NULL) != (new_val != NULL)
	  || (b->val != NULL && !value_equal_contents (b->val, new_val)))
	{
	  if (new_val != NULL)
	    {
	      release_value (new_val);
	      value_free_to_mark (mark);
	    }
	  bs->old_val = b->val;
	  b->val = new_val;
	  b->val_valid = 1;
	  return WP_VALUE_CHANGED;
	}
      else
	{
	  /* Nothing changed.  */
	  value_free_to_mark (mark);
	  return WP_VALUE_NOT_CHANGED;
	}
    }
  else
    {
      /* This seems like the only logical thing to do because
         if we temporarily ignored the watchpoint, then when
         we reenter the block in which it is valid it contains
         garbage (in the case of a function, it may have two
         garbage values, one before and one after the prologue).
         So we can't even detect the first assignment to it and
         watch after that (since the garbage may or may not equal
         the first value assigned).  */
      /* We print all the stop information in
	 breakpoint_ops->print_it, but in this case, by the time we
	 call breakpoint_ops->print_it this bp will be deleted
	 already.  So we have no choice but print the information
	 here.  */

      SWITCH_THRU_ALL_UIS ()
        {
	  struct ui_out *uiout = current_uiout;

	  if (ui_out_is_mi_like_p (uiout))
	    ui_out_field_string
	      (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE));
	  ui_out_text (uiout, "\nWatchpoint ");
	  ui_out_field_int (uiout, "wpnum", b->base.number);
	  ui_out_text (uiout,
		       " deleted because the program has left the block in\n"
		       "which its expression is valid.\n");
	}

      /* Make sure the watchpoint's commands aren't executed.  */
      decref_counted_command_line (&b->base.commands);
      watchpoint_del_at_next_stop (b);

      return WP_DELETED;
    }
}

/* Return true if it looks like target has stopped due to hitting
   breakpoint location BL.  This function does not check if we should
   stop, only if BL explains the stop.  */

static int
bpstat_check_location (const struct bp_location *bl,
		       struct address_space *aspace, CORE_ADDR bp_addr,
		       const struct target_waitstatus *ws)
{
  struct breakpoint *b = bl->owner;

  /* BL is from an existing breakpoint.  */
  gdb_assert (b != NULL);

  return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws);
}

/* Determine if the watched values have actually changed, and we
   should stop.  If not, set BS->stop to 0.  */

static void
bpstat_check_watchpoint (bpstat bs)
{
  const struct bp_location *bl;
  struct watchpoint *b;

  /* BS is built for existing struct breakpoint.  */
  bl = bs->bp_location_at;
  gdb_assert (bl != NULL);
  b = (struct watchpoint *) bs->breakpoint_at;
  gdb_assert (b != NULL);

    {
      int must_check_value = 0;
      
      if (b->base.type == bp_watchpoint)
	/* For a software watchpoint, we must always check the
	   watched value.  */
	must_check_value = 1;
      else if (b->watchpoint_triggered == watch_triggered_yes)
	/* We have a hardware watchpoint (read, write, or access)
	   and the target earlier reported an address watched by
	   this watchpoint.  */
	must_check_value = 1;
      else if (b->watchpoint_triggered == watch_triggered_unknown
	       && b->base.type == bp_hardware_watchpoint)
	/* We were stopped by a hardware watchpoint, but the target could
	   not report the data address.  We must check the watchpoint's
	   value.  Access and read watchpoints are out of luck; without
	   a data address, we can't figure it out.  */
	must_check_value = 1;

      if (must_check_value)
	{
	  char *message
	    = xstrprintf ("Error evaluating expression for watchpoint %d\n",
			  b->base.number);
	  struct cleanup *cleanups = make_cleanup (xfree, message);
	  int e = catch_errors (watchpoint_check, bs, message,
				RETURN_MASK_ALL);
	  do_cleanups (cleanups);
	  switch (e)
	    {
	    case WP_DELETED:
	      /* We've already printed what needs to be printed.  */
	      bs->print_it = print_it_done;
	      /* Stop.  */
	      break;
	    case WP_IGNORE:
	      bs->print_it = print_it_noop;
	      bs->stop = 0;
	      break;
	    case WP_VALUE_CHANGED:
	      if (b->base.type == bp_read_watchpoint)
		{
		  /* There are two cases to consider here:

		     1. We're watching the triggered memory for reads.
		     In that case, trust the target, and always report
		     the watchpoint hit to the user.  Even though
		     reads don't cause value changes, the value may
		     have changed since the last time it was read, and
		     since we're not trapping writes, we will not see
		     those, and as such we should ignore our notion of
		     old value.

		     2. We're watching the triggered memory for both
		     reads and writes.  There are two ways this may
		     happen:

		     2.1. This is a target that can't break on data
		     reads only, but can break on accesses (reads or
		     writes), such as e.g., x86.  We detect this case
		     at the time we try to insert read watchpoints.

		     2.2. Otherwise, the target supports read
		     watchpoints, but, the user set an access or write
		     watchpoint watching the same memory as this read
		     watchpoint.

		     If we're watching memory writes as well as reads,
		     ignore watchpoint hits when we find that the
		     value hasn't changed, as reads don't cause
		     changes.  This still gives false positives when
		     the program writes the same value to memory as
		     what there was already in memory (we will confuse
		     it for a read), but it's much better than
		     nothing.  */

		  int other_write_watchpoint = 0;

		  if (bl->watchpoint_type == hw_read)
		    {
		      struct breakpoint *other_b;

		      ALL_BREAKPOINTS (other_b)
			if (other_b->type == bp_hardware_watchpoint
			    || other_b->type == bp_access_watchpoint)
			  {
			    struct watchpoint *other_w =
			      (struct watchpoint *) other_b;

			    if (other_w->watchpoint_triggered
				== watch_triggered_yes)
			      {
				other_write_watchpoint = 1;
				break;
			      }
			  }
		    }

		  if (other_write_watchpoint
		      || bl->watchpoint_type == hw_access)
		    {
		      /* We're watching the same memory for writes,
			 and the value changed since the last time we
			 updated it, so this trap must be for a write.
			 Ignore it.  */
		      bs->print_it = print_it_noop;
		      bs->stop = 0;
		    }
		}
	      break;
	    case WP_VALUE_NOT_CHANGED:
	      if (b->base.type == bp_hardware_watchpoint
		  || b->base.type == bp_watchpoint)
		{
		  /* Don't stop: write watchpoints shouldn't fire if
		     the value hasn't changed.  */
		  bs->print_it = print_it_noop;
		  bs->stop = 0;
		}
	      /* Stop.  */
	      break;
	    default:
	      /* Can't happen.  */
	    case 0:
	      /* Error from catch_errors.  */
	      {
		SWITCH_THRU_ALL_UIS ()
	          {
		    printf_filtered (_("Watchpoint %d deleted.\n"),
				     b->base.number);
		  }
		watchpoint_del_at_next_stop (b);
		/* We've already printed what needs to be printed.  */
		bs->print_it = print_it_done;
	      }
	      break;
	    }
	}
      else	/* must_check_value == 0 */
	{
	  /* This is a case where some watchpoint(s) triggered, but
	     not at the address of this watchpoint, or else no
	     watchpoint triggered after all.  So don't print
	     anything for this watchpoint.  */
	  bs->print_it = print_it_noop;
	  bs->stop = 0;
	}
    }
}

/* For breakpoints that are currently marked as telling gdb to stop,
   check conditions (condition proper, frame, thread and ignore count)
   of breakpoint referred to by BS.  If we should not stop for this
   breakpoint, set BS->stop to 0.  */

static void
bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid)
{
  const struct bp_location *bl;
  struct breakpoint *b;
  int value_is_zero = 0;
  struct expression *cond;

  gdb_assert (bs->stop);

  /* BS is built for existing struct breakpoint.  */
  bl = bs->bp_location_at;
  gdb_assert (bl != NULL);
  b = bs->breakpoint_at;
  gdb_assert (b != NULL);

  /* Even if the target evaluated the condition on its end and notified GDB, we
     need to do so again since GDB does not know if we stopped due to a
     breakpoint or a single step breakpoint.  */

  if (frame_id_p (b->frame_id)
      && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ())))
    {
      bs->stop = 0;
      return;
    }

  /* If this is a thread/task-specific breakpoint, don't waste cpu
     evaluating the condition if this isn't the specified
     thread/task.  */
  if ((b->thread != -1 && b->thread != ptid_to_global_thread_id (ptid))
      || (b->task != 0 && b->task != ada_get_task_number (ptid)))

    {
      bs->stop = 0;
      return;
    }

  /* Evaluate extension language breakpoints that have a "stop" method
     implemented.  */
  bs->stop = breakpoint_ext_lang_cond_says_stop (b);

  if (is_watchpoint (b))
    {
      struct watchpoint *w = (struct watchpoint *) b;

      cond = w->cond_exp.get ();
    }
  else
    cond = bl->cond.get ();

  if (cond && b->disposition != disp_del_at_next_stop)
    {
      int within_current_scope = 1;
      struct watchpoint * w;

      /* We use value_mark and value_free_to_mark because it could
	 be a long time before we return to the command level and
	 call free_all_values.  We can't call free_all_values
	 because we might be in the middle of evaluating a
	 function call.  */
      struct value *mark = value_mark ();

      if (is_watchpoint (b))
	w = (struct watchpoint *) b;
      else
	w = NULL;

      /* Need to select the frame, with all that implies so that
	 the conditions will have the right context.  Because we
	 use the frame, we will not see an inlined function's
	 variables when we arrive at a breakpoint at the start
	 of the inlined function; the current frame will be the
	 call site.  */
      if (w == NULL || w->cond_exp_valid_block == NULL)
	select_frame (get_current_frame ());
      else
	{
	  struct frame_info *frame;

	  /* For local watchpoint expressions, which particular
	     instance of a local is being watched matters, so we
	     keep track of the frame to evaluate the expression
	     in.  To evaluate the condition however, it doesn't
	     really matter which instantiation of the function
	     where the condition makes sense triggers the
	     watchpoint.  This allows an expression like "watch
	     global if q > 10" set in `func', catch writes to
	     global on all threads that call `func', or catch
	     writes on all recursive calls of `func' by a single
	     thread.  We simply always evaluate the condition in
	     the innermost frame that's executing where it makes
	     sense to evaluate the condition.  It seems
	     intuitive.  */
	  frame = block_innermost_frame (w->cond_exp_valid_block);
	  if (frame != NULL)
	    select_frame (frame);
	  else
	    within_current_scope = 0;
	}
      if (within_current_scope)
	value_is_zero
	  = catch_errors (breakpoint_cond_eval, cond,
			  "Error in testing breakpoint condition:\n",
			  RETURN_MASK_ALL);
      else
	{
	  warning (_("Watchpoint condition cannot be tested "
		     "in the current scope"));
	  /* If we failed to set the right context for this
	     watchpoint, unconditionally report it.  */
	  value_is_zero = 0;
	}
      /* FIXME-someday, should give breakpoint #.  */
      value_free_to_mark (mark);
    }

  if (cond && value_is_zero)
    {
      bs->stop = 0;
    }
  else if (b->ignore_count > 0)
    {
      b->ignore_count--;
      bs->stop = 0;
      /* Increase the hit count even though we don't stop.  */
      ++(b->hit_count);
      observer_notify_breakpoint_modified (b);
    }	
}

/* Returns true if we need to track moribund locations of LOC's type
   on the current target.  */

static int
need_moribund_for_location_type (struct bp_location *loc)
{
  return ((loc->loc_type == bp_loc_software_breakpoint
	   && !target_supports_stopped_by_sw_breakpoint ())
	  || (loc->loc_type == bp_loc_hardware_breakpoint
	      && !target_supports_stopped_by_hw_breakpoint ()));
}


/* Get a bpstat associated with having just stopped at address
   BP_ADDR in thread PTID.

   Determine whether we stopped at a breakpoint, etc, or whether we
   don't understand this stop.  Result is a chain of bpstat's such
   that:

   if we don't understand the stop, the result is a null pointer.

   if we understand why we stopped, the result is not null.

   Each element of the chain refers to a particular breakpoint or
   watchpoint at which we have stopped.  (We may have stopped for
   several reasons concurrently.)

   Each element of the chain has valid next, breakpoint_at,
   commands, FIXME??? fields.  */

bpstat
bpstat_stop_status (struct address_space *aspace,
		    CORE_ADDR bp_addr, ptid_t ptid,
		    const struct target_waitstatus *ws)
{
  struct breakpoint *b = NULL;
  struct bp_location *bl;
  struct bp_location *loc;
  /* First item of allocated bpstat's.  */
  bpstat bs_head = NULL, *bs_link = &bs_head;
  /* Pointer to the last thing in the chain currently.  */
  bpstat bs;
  int ix;
  int need_remove_insert;
  int removed_any;

  /* First, build the bpstat chain with locations that explain a
     target stop, while being careful to not set the target running,
     as that may invalidate locations (in particular watchpoint
     locations are recreated).  Resuming will happen here with
     breakpoint conditions or watchpoint expressions that include
     inferior function calls.  */

  ALL_BREAKPOINTS (b)
    {
      if (!breakpoint_enabled (b))
	continue;

      for (bl = b->loc; bl != NULL; bl = bl->next)
	{
	  /* For hardware watchpoints, we look only at the first
	     location.  The watchpoint_check function will work on the
	     entire expression, not the individual locations.  For
	     read watchpoints, the watchpoints_triggered function has
	     checked all locations already.  */
	  if (b->type == bp_hardware_watchpoint && bl != b->loc)
	    break;

	  if (!bl->enabled || bl->shlib_disabled)
	    continue;

	  if (!bpstat_check_location (bl, aspace, bp_addr, ws))
	    continue;

	  /* Come here if it's a watchpoint, or if the break address
	     matches.  */

	  bs = bpstat_alloc (bl, &bs_link);	/* Alloc a bpstat to
						   explain stop.  */

	  /* Assume we stop.  Should we find a watchpoint that is not
	     actually triggered, or if the condition of the breakpoint
	     evaluates as false, we'll reset 'stop' to 0.  */
	  bs->stop = 1;
	  bs->print = 1;

	  /* If this is a scope breakpoint, mark the associated
	     watchpoint as triggered so that we will handle the
	     out-of-scope event.  We'll get to the watchpoint next
	     iteration.  */
	  if (b->type == bp_watchpoint_scope && b->related_breakpoint != b)
	    {
	      struct watchpoint *w = (struct watchpoint *) b->related_breakpoint;

	      w->watchpoint_triggered = watch_triggered_yes;
	    }
	}
    }

  /* Check if a moribund breakpoint explains the stop.  */
  if (!target_supports_stopped_by_sw_breakpoint ()
      || !target_supports_stopped_by_hw_breakpoint ())
    {
      for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix)
	{
	  if (breakpoint_location_address_match (loc, aspace, bp_addr)
	      && need_moribund_for_location_type (loc))
	    {
	      bs = bpstat_alloc (loc, &bs_link);
	      /* For hits of moribund locations, we should just proceed.  */
	      bs->stop = 0;
	      bs->print = 0;
	      bs->print_it = print_it_noop;
	    }
	}
    }

  /* A bit of special processing for shlib breakpoints.  We need to
     process solib loading here, so that the lists of loaded and
     unloaded libraries are correct before we handle "catch load" and
     "catch unload".  */
  for (bs = bs_head; bs != NULL; bs = bs->next)
    {
      if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event)
	{
	  handle_solib_event ();
	  break;
	}
    }

  /* Now go through the locations that caused the target to stop, and
     check whether we're interested in reporting this stop to higher
     layers, or whether we should resume the target transparently.  */

  removed_any = 0;

  for (bs = bs_head; bs != NULL; bs = bs->next)
    {
      if (!bs->stop)
	continue;

      b = bs->breakpoint_at;
      b->ops->check_status (bs);
      if (bs->stop)
	{
	  bpstat_check_breakpoint_conditions (bs, ptid);

	  if (bs->stop)
	    {
	      ++(b->hit_count);
	      observer_notify_breakpoint_modified (b);

	      /* We will stop here.  */
	      if (b->disposition == disp_disable)
		{
		  --(b->enable_count);
		  if (b->enable_count <= 0)
		    b->enable_state = bp_disabled;
		  removed_any = 1;
		}
	      if (b->silent)
		bs->print = 0;
	      bs->commands = b->commands;
	      incref_counted_command_line (bs->commands);
	      if (command_line_is_silent (bs->commands
					  ? bs->commands->commands : NULL))
		bs->print = 0;

	      b->ops->after_condition_true (bs);
	    }

	}

      /* Print nothing for this entry if we don't stop or don't
	 print.  */
      if (!bs->stop || !bs->print)
	bs->print_it = print_it_noop;
    }

  /* If we aren't stopping, the value of some hardware watchpoint may
     not have changed, but the intermediate memory locations we are
     watching may have.  Don't bother if we're stopping; this will get
     done later.  */
  need_remove_insert = 0;
  if (! bpstat_causes_stop (bs_head))
    for (bs = bs_head; bs != NULL; bs = bs->next)
      if (!bs->stop
	  && bs->breakpoint_at
	  && is_hardware_watchpoint (bs->breakpoint_at))
	{
	  struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at;

	  update_watchpoint (w, 0 /* don't reparse.  */);
	  need_remove_insert = 1;
	}

  if (need_remove_insert)
    update_global_location_list (UGLL_MAY_INSERT);
  else if (removed_any)
    update_global_location_list (UGLL_DONT_INSERT);

  return bs_head;
}

static void
handle_jit_event (void)
{
  struct frame_info *frame;
  struct gdbarch *gdbarch;

  if (debug_infrun)
    fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n");

  /* Switch terminal for any messages produced by
     breakpoint_re_set.  */
  target_terminal_ours_for_output ();

  frame = get_current_frame ();
  gdbarch = get_frame_arch (frame);

  jit_event_handler (gdbarch);

  target_terminal_inferior ();
}

/* Prepare WHAT final decision for infrun.  */

/* Decide what infrun needs to do with this bpstat.  */

struct bpstat_what
bpstat_what (bpstat bs_head)
{
  struct bpstat_what retval;
  bpstat bs;

  retval.main_action = BPSTAT_WHAT_KEEP_CHECKING;
  retval.call_dummy = STOP_NONE;
  retval.is_longjmp = 0;

  for (bs = bs_head; bs != NULL; bs = bs->next)
    {
      /* Extract this BS's action.  After processing each BS, we check
	 if its action overrides all we've seem so far.  */
      enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING;
      enum bptype bptype;

      if (bs->breakpoint_at == NULL)
	{
	  /* I suspect this can happen if it was a momentary
	     breakpoint which has since been deleted.  */
	  bptype = bp_none;
	}
      else
	bptype = bs->breakpoint_at->type;

      switch (bptype)
	{
	case bp_none:
	  break;
	case bp_breakpoint:
	case bp_hardware_breakpoint:
	case bp_single_step:
	case bp_until:
	case bp_finish:
	case bp_shlib_event:
	  if (bs->stop)
	    {
	      if (bs->print)
		this_action = BPSTAT_WHAT_STOP_NOISY;
	      else
		this_action = BPSTAT_WHAT_STOP_SILENT;
	    }
	  else
	    this_action = BPSTAT_WHAT_SINGLE;
	  break;
	case bp_watchpoint:
	case bp_hardware_watchpoint:
	case bp_read_watchpoint:
	case bp_access_watchpoint:
	  if (bs->stop)
	    {
	      if (bs->print)
		this_action = BPSTAT_WHAT_STOP_NOISY;
	      else
		this_action = BPSTAT_WHAT_STOP_SILENT;
	    }
	  else
	    {
	      /* There was a watchpoint, but we're not stopping.
		 This requires no further action.  */
	    }
	  break;
	case bp_longjmp:
	case bp_longjmp_call_dummy:
	case bp_exception:
	  if (bs->stop)
	    {
	      this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME;
	      retval.is_longjmp = bptype != bp_exception;
	    }
	  else
	    this_action = BPSTAT_WHAT_SINGLE;
	  break;
	case bp_longjmp_resume:
	case bp_exception_resume:
	  if (bs->stop)
	    {
	      this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME;
	      retval.is_longjmp = bptype == bp_longjmp_resume;
	    }
	  else
	    this_action = BPSTAT_WHAT_SINGLE;
	  break;
	case bp_step_resume:
	  if (bs->stop)
	    this_action = BPSTAT_WHAT_STEP_RESUME;
	  else
	    {
	      /* It is for the wrong frame.  */
	      this_action = BPSTAT_WHAT_SINGLE;
	    }
	  break;
	case bp_hp_step_resume:
	  if (bs->stop)
	    this_action = BPSTAT_WHAT_HP_STEP_RESUME;
	  else
	    {
	      /* It is for the wrong frame.  */
	      this_action = BPSTAT_WHAT_SINGLE;
	    }
	  break;
	case bp_watchpoint_scope:
	case bp_thread_event:
	case bp_overlay_event:
	case bp_longjmp_master:
	case bp_std_terminate_master:
	case bp_exception_master:
	  this_action = BPSTAT_WHAT_SINGLE;
	  break;
	case bp_catchpoint:
	  if (bs->stop)
	    {
	      if (bs->print)
		this_action = BPSTAT_WHAT_STOP_NOISY;
	      else
		this_action = BPSTAT_WHAT_STOP_SILENT;
	    }
	  else
	    {
	      /* There was a catchpoint, but we're not stopping.
		 This requires no further action.  */
	    }
	  break;
	case bp_jit_event:
	  this_action = BPSTAT_WHAT_SINGLE;
	  break;
	case bp_call_dummy:
	  /* Make sure the action is stop (silent or noisy),
	     so infrun.c pops the dummy frame.  */
	  retval.call_dummy = STOP_STACK_DUMMY;
	  this_action = BPSTAT_WHAT_STOP_SILENT;
	  break;
	case bp_std_terminate:
	  /* Make sure the action is stop (silent or noisy),
	     so infrun.c pops the dummy frame.  */
	  retval.call_dummy = STOP_STD_TERMINATE;
	  this_action = BPSTAT_WHAT_STOP_SILENT;
	  break;
	case bp_tracepoint:
	case bp_fast_tracepoint:
	case bp_static_tracepoint:
	  /* Tracepoint hits should not be reported back to GDB, and
	     if one got through somehow, it should have been filtered
	     out already.  */
	  internal_error (__FILE__, __LINE__,
			  _("bpstat_what: tracepoint encountered"));
	  break;
	case bp_gnu_ifunc_resolver:
	  /* Step over it (and insert bp_gnu_ifunc_resolver_return).  */
	  this_action = BPSTAT_WHAT_SINGLE;
	  break;
	case bp_gnu_ifunc_resolver_return:
	  /* The breakpoint will be removed, execution will restart from the
	     PC of the former breakpoint.  */
	  this_action = BPSTAT_WHAT_KEEP_CHECKING;
	  break;

	case bp_dprintf:
	  if (bs->stop)
	    this_action = BPSTAT_WHAT_STOP_SILENT;
	  else
	    this_action = BPSTAT_WHAT_SINGLE;
	  break;

	default:
	  internal_error (__FILE__, __LINE__,
			  _("bpstat_what: unhandled bptype %d"), (int) bptype);
	}

      retval.main_action = std::max (retval.main_action, this_action);
    }

  return retval;
}

void
bpstat_run_callbacks (bpstat bs_head)
{
  bpstat bs;

  for (bs = bs_head; bs != NULL; bs = bs->next)
    {
      struct breakpoint *b = bs->breakpoint_at;

      if (b == NULL)
	continue;
      switch (b->type)
	{
	case bp_jit_event:
	  handle_jit_event ();
	  break;
	case bp_gnu_ifunc_resolver:
	  gnu_ifunc_resolver_stop (b);
	  break;
	case bp_gnu_ifunc_resolver_return:
	  gnu_ifunc_resolver_return_stop (b);
	  break;
	}
    }
}

/* Nonzero if we should step constantly (e.g. watchpoints on machines
   without hardware support).  This isn't related to a specific bpstat,
   just to things like whether watchpoints are set.  */

int
bpstat_should_step (void)
{
  struct breakpoint *b;

  ALL_BREAKPOINTS (b)
    if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL)
      return 1;
  return 0;
}

int
bpstat_causes_stop (bpstat bs)
{
  for (; bs != NULL; bs = bs->next)
    if (bs->stop)
      return 1;

  return 0;
}



/* Compute a string of spaces suitable to indent the next line
   so it starts at the position corresponding to the table column
   named COL_NAME in the currently active table of UIOUT.  */

static char *
wrap_indent_at_field (struct ui_out *uiout, const char *col_name)
{
  static char wrap_indent[80];
  int i, total_width, width, align;
  const char *text;

  total_width = 0;
  for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++)
    {
      if (strcmp (text, col_name) == 0)
	{
	  gdb_assert (total_width < sizeof wrap_indent);
	  memset (wrap_indent, ' ', total_width);
	  wrap_indent[total_width] = 0;

	  return wrap_indent;
	}

      total_width += width + 1;
    }

  return NULL;
}

/* Determine if the locations of this breakpoint will have their conditions
   evaluated by the target, host or a mix of both.  Returns the following:

    "host": Host evals condition.
    "host or target": Host or Target evals condition.
    "target": Target evals condition.
*/

static const char *
bp_condition_evaluator (struct breakpoint *b)
{
  struct bp_location *bl;
  char host_evals = 0;
  char target_evals = 0;

  if (!b)
    return NULL;

  if (!is_breakpoint (b))
    return NULL;

  if (gdb_evaluates_breakpoint_condition_p ()
      || !target_supports_evaluation_of_breakpoint_conditions ())
    return condition_evaluation_host;

  for (bl = b->loc; bl; bl = bl->next)
    {
      if (bl->cond_bytecode)
	target_evals++;
      else
	host_evals++;
    }

  if (host_evals && target_evals)
    return condition_evaluation_both;
  else if (target_evals)
    return condition_evaluation_target;
  else
    return condition_evaluation_host;
}

/* Determine the breakpoint location's condition evaluator.  This is
   similar to bp_condition_evaluator, but for locations.  */

static const char *
bp_location_condition_evaluator (struct bp_location *bl)
{
  if (bl && !is_breakpoint (bl->owner))
    return NULL;

  if (gdb_evaluates_breakpoint_condition_p ()
      || !target_supports_evaluation_of_breakpoint_conditions ())
    return condition_evaluation_host;

  if (bl && bl->cond_bytecode)
    return condition_evaluation_target;
  else
    return condition_evaluation_host;
}

/* Print the LOC location out of the list of B->LOC locations.  */

static void
print_breakpoint_location (struct breakpoint *b,
			   struct bp_location *loc)
{
  struct ui_out *uiout = current_uiout;
  struct cleanup *old_chain = save_current_program_space ();

  if (loc != NULL && loc->shlib_disabled)
    loc = NULL;

  if (loc != NULL)
    set_current_program_space (loc->pspace);

  if (b->display_canonical)
    ui_out_field_string (uiout, "what",
			 event_location_to_string (b->location));
  else if (loc && loc->symtab)
    {
      struct symbol *sym 
	= find_pc_sect_function (loc->address, loc->section);
      if (sym)
	{
	  ui_out_text (uiout, "in ");
	  ui_out_field_string (uiout, "func",
			       SYMBOL_PRINT_NAME (sym));
	  ui_out_text (uiout, " ");
	  ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what"));
	  ui_out_text (uiout, "at ");
	}
      ui_out_field_string (uiout, "file",
			   symtab_to_filename_for_display (loc->symtab));
      ui_out_text (uiout, ":");

      if (ui_out_is_mi_like_p (uiout))
	ui_out_field_string (uiout, "fullname",
			     symtab_to_fullname (loc->symtab));
      
      ui_out_field_int (uiout, "line", loc->line_number);
    }
  else if (loc)
    {
      struct ui_file *stb = mem_fileopen ();
      struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb);

      print_address_symbolic (loc->gdbarch, loc->address, stb,
			      demangle, "");
      ui_out_field_stream (uiout, "at", stb);

      do_cleanups (stb_chain);
    }
  else
    {
      ui_out_field_string (uiout, "pending",
			   event_location_to_string (b->location));
      /* If extra_string is available, it could be holding a condition
	 or dprintf arguments.  In either case, make sure it is printed,
	 too, but only for non-MI streams.  */
      if (!ui_out_is_mi_like_p (uiout) && b->extra_string != NULL)
	{
	  if (b->type == bp_dprintf)
	    ui_out_text (uiout, ",");
	  else
	    ui_out_text (uiout, " ");
	  ui_out_text (uiout, b->extra_string);
	}
    }

  if (loc && is_breakpoint (b)
      && breakpoint_condition_evaluation_mode () == condition_evaluation_target
      && bp_condition_evaluator (b) == condition_evaluation_both)
    {
      ui_out_text (uiout, " (");
      ui_out_field_string (uiout, "evaluated-by",
			   bp_location_condition_evaluator (loc));
      ui_out_text (uiout, ")");
    }

  do_cleanups (old_chain);
}

static const char *
bptype_string (enum bptype type)
{
  struct ep_type_description
    {
      enum bptype type;
      char *description;
    };
  static struct ep_type_description bptypes[] =
  {
    {bp_none, "?deleted?"},
    {bp_breakpoint, "breakpoint"},
    {bp_hardware_breakpoint, "hw breakpoint"},
    {bp_single_step, "sw single-step"},
    {bp_until, "until"},
    {bp_finish, "finish"},
    {bp_watchpoint, "watchpoint"},
    {bp_hardware_watchpoint, "hw watchpoint"},
    {bp_read_watchpoint, "read watchpoint"},
    {bp_access_watchpoint, "acc watchpoint"},
    {bp_longjmp, "longjmp"},
    {bp_longjmp_resume, "longjmp resume"},
    {bp_longjmp_call_dummy, "longjmp for call dummy"},
    {bp_exception, "exception"},
    {bp_exception_resume, "exception resume"},
    {bp_step_resume, "step resume"},
    {bp_hp_step_resume, "high-priority step resume"},
    {bp_watchpoint_scope, "watchpoint scope"},
    {bp_call_dummy, "call dummy"},
    {bp_std_terminate, "std::terminate"},
    {bp_shlib_event, "shlib events"},
    {bp_thread_event, "thread events"},
    {bp_overlay_event, "overlay events"},
    {bp_longjmp_master, "longjmp master"},
    {bp_std_terminate_master, "std::terminate master"},
    {bp_exception_master, "exception master"},
    {bp_catchpoint, "catchpoint"},
    {bp_tracepoint, "tracepoint"},
    {bp_fast_tracepoint, "fast tracepoint"},
    {bp_static_tracepoint, "static tracepoint"},
    {bp_dprintf, "dprintf"},
    {bp_jit_event, "jit events"},
    {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"},
    {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"},
  };

  if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0])))
      || ((int) type != bptypes[(int) type].type))
    internal_error (__FILE__, __LINE__,
		    _("bptypes table does not describe type #%d."),
		    (int) type);

  return bptypes[(int) type].description;
}

/* For MI, output a field named 'thread-groups' with a list as the value.
   For CLI, prefix the list with the string 'inf'. */

static void
output_thread_groups (struct ui_out *uiout,
		      const char *field_name,
		      VEC(int) *inf_num,
		      int mi_only)
{
  struct cleanup *back_to;
  int is_mi = ui_out_is_mi_like_p (uiout);
  int inf;
  int i;

  /* For backward compatibility, don't display inferiors in CLI unless
     there are several.  Always display them for MI. */
  if (!is_mi && mi_only)
    return;

  back_to = make_cleanup_ui_out_list_begin_end (uiout, field_name);

  for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i)
    {
      if (is_mi)
	{
	  char mi_group[10];

	  xsnprintf (mi_group, sizeof (mi_group), "i%d", inf);
	  ui_out_field_string (uiout, NULL, mi_group);
	}
      else
	{
	  if (i == 0)
	    ui_out_text (uiout, " inf ");
	  else
	    ui_out_text (uiout, ", ");
	
	  ui_out_text (uiout, plongest (inf));
	}
    }

  do_cleanups (back_to);
}

/* Print B to gdb_stdout.  */

static void
print_one_breakpoint_location (struct breakpoint *b,
			       struct bp_location *loc,
			       int loc_number,
			       struct bp_location **last_loc,
			       int allflag)
{
  struct command_line *l;
  static char bpenables[] = "nynny";

  struct ui_out *uiout = current_uiout;
  int header_of_multiple = 0;
  int part_of_multiple = (loc != NULL);
  struct value_print_options opts;

  get_user_print_options (&opts);

  gdb_assert (!loc || loc_number != 0);
  /* See comment in print_one_breakpoint concerning treatment of
     breakpoints with single disabled location.  */
  if (loc == NULL 
      && (b->loc != NULL 
	  && (b->loc->next != NULL || !b->loc->enabled)))
    header_of_multiple = 1;
  if (loc == NULL)
    loc = b->loc;

  annotate_record ();

  /* 1 */
  annotate_field (0);
  if (part_of_multiple)
    {
      char *formatted;
      formatted = xstrprintf ("%d.%d", b->number, loc_number);
      ui_out_field_string (uiout, "number", formatted);
      xfree (formatted);
    }
  else
    {
      ui_out_field_int (uiout, "number", b->number);
    }

  /* 2 */
  annotate_field (1);
  if (part_of_multiple)
    ui_out_field_skip (uiout, "type");
  else
    ui_out_field_string (uiout, "type", bptype_string (b->type));

  /* 3 */
  annotate_field (2);
  if (part_of_multiple)
    ui_out_field_skip (uiout, "disp");
  else
    ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));


  /* 4 */
  annotate_field (3);
  if (part_of_multiple)
    ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n");
  else
    ui_out_field_fmt (uiout, "enabled", "%c", 
		      bpenables[(int) b->enable_state]);
  ui_out_spaces (uiout, 2);

  
  /* 5 and 6 */
  if (b->ops != NULL && b->ops->print_one != NULL)
    {
      /* Although the print_one can possibly print all locations,
	 calling it here is not likely to get any nice result.  So,
	 make sure there's just one location.  */
      gdb_assert (b->loc == NULL || b->loc->next == NULL);
      b->ops->print_one (b, last_loc);
    }
  else
    switch (b->type)
      {
      case bp_none:
	internal_error (__FILE__, __LINE__,
			_("print_one_breakpoint: bp_none encountered\n"));
	break;

      case bp_watchpoint:
      case bp_hardware_watchpoint:
      case bp_read_watchpoint:
      case bp_access_watchpoint:
	{
	  struct watchpoint *w = (struct watchpoint *) b;

	  /* Field 4, the address, is omitted (which makes the columns
	     not line up too nicely with the headers, but the effect
	     is relatively readable).  */
	  if (opts.addressprint)
	    ui_out_field_skip (uiout, "addr");
	  annotate_field (5);
	  ui_out_field_string (uiout, "what", w->exp_string);
	}
	break;

      case bp_breakpoint:
      case bp_hardware_breakpoint:
      case bp_single_step:
      case bp_until:
      case bp_finish:
      case bp_longjmp:
      case bp_longjmp_resume:
      case bp_longjmp_call_dummy:
      case bp_exception:
      case bp_exception_resume:
      case bp_step_resume:
      case bp_hp_step_resume:
      case bp_watchpoint_scope:
      case bp_call_dummy:
      case bp_std_terminate:
      case bp_shlib_event:
      case bp_thread_event:
      case bp_overlay_event:
      case bp_longjmp_master:
      case bp_std_terminate_master:
      case bp_exception_master:
      case bp_tracepoint:
      case bp_fast_tracepoint:
      case bp_static_tracepoint:
      case bp_dprintf:
      case bp_jit_event:
      case bp_gnu_ifunc_resolver:
      case bp_gnu_ifunc_resolver_return:
	if (opts.addressprint)
	  {
	    annotate_field (4);
	    if (header_of_multiple)
	      ui_out_field_string (uiout, "addr", "<MULTIPLE>");
	    else if (b->loc == NULL || loc->shlib_disabled)
	      ui_out_field_string (uiout, "addr", "<PENDING>");
	    else
	      ui_out_field_core_addr (uiout, "addr",
				      loc->gdbarch, loc->address);
	  }
	annotate_field (5);
	if (!header_of_multiple)
	  print_breakpoint_location (b, loc);
	if (b->loc)
	  *last_loc = b->loc;
	break;
      }


  if (loc != NULL && !header_of_multiple)
    {
      struct inferior *inf;
      VEC(int) *inf_num = NULL;
      int mi_only = 1;

      ALL_INFERIORS (inf)
	{
	  if (inf->pspace == loc->pspace)
	    VEC_safe_push (int, inf_num, inf->num);
	}

        /* For backward compatibility, don't display inferiors in CLI unless
	   there are several.  Always display for MI. */
	if (allflag
	    || (!gdbarch_has_global_breakpoints (target_gdbarch ())
		&& (number_of_program_spaces () > 1
		    || number_of_inferiors () > 1)
		/* LOC is for existing B, it cannot be in
		   moribund_locations and thus having NULL OWNER.  */
		&& loc->owner->type != bp_catchpoint))
	mi_only = 0;
      output_thread_groups (uiout, "thread-groups", inf_num, mi_only);
      VEC_free (int, inf_num);
    }

  if (!part_of_multiple)
    {
      if (b->thread != -1)
	{
	  /* FIXME: This seems to be redundant and lost here; see the
	     "stop only in" line a little further down.  */
	  ui_out_text (uiout, " thread ");
	  ui_out_field_int (uiout, "thread", b->thread);
	}
      else if (b->task != 0)
	{
	  ui_out_text (uiout, " task ");
	  ui_out_field_int (uiout, "task", b->task);
	}
    }

  ui_out_text (uiout, "\n");

  if (!part_of_multiple)
    b->ops->print_one_detail (b, uiout);

  if (part_of_multiple && frame_id_p (b->frame_id))
    {
      annotate_field (6);
      ui_out_text (uiout, "\tstop only in stack frame at ");
      /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside
         the frame ID.  */
      ui_out_field_core_addr (uiout, "frame",
			      b->gdbarch, b->frame_id.stack_addr);
      ui_out_text (uiout, "\n");
    }
  
  if (!part_of_multiple && b->cond_string)
    {
      annotate_field (7);
      if (is_tracepoint (b))
	ui_out_text (uiout, "\ttrace only if ");
      else
	ui_out_text (uiout, "\tstop only if ");
      ui_out_field_string (uiout, "cond", b->cond_string);

      /* Print whether the target is doing the breakpoint's condition
	 evaluation.  If GDB is doing the evaluation, don't print anything.  */
      if (is_breakpoint (b)
	  && breakpoint_condition_evaluation_mode ()
	  == condition_evaluation_target)
	{
	  ui_out_text (uiout, " (");
	  ui_out_field_string (uiout, "evaluated-by",
			       bp_condition_evaluator (b));
	  ui_out_text (uiout, " evals)");
	}
      ui_out_text (uiout, "\n");
    }

  if (!part_of_multiple && b->thread != -1)
    {
      /* FIXME should make an annotation for this.  */
      ui_out_text (uiout, "\tstop only in thread ");
      if (ui_out_is_mi_like_p (uiout))
	ui_out_field_int (uiout, "thread", b->thread);
      else
	{
	  struct thread_info *thr = find_thread_global_id (b->thread);

	  ui_out_field_string (uiout, "thread", print_thread_id (thr));
	}
      ui_out_text (uiout, "\n");
    }
  
  if (!part_of_multiple)
    {
      if (b->hit_count)
	{
	  /* FIXME should make an annotation for this.  */
	  if (is_catchpoint (b))
	    ui_out_text (uiout, "\tcatchpoint");
	  else if (is_tracepoint (b))
	    ui_out_text (uiout, "\ttracepoint");
	  else
	    ui_out_text (uiout, "\tbreakpoint");
	  ui_out_text (uiout, " already hit ");
	  ui_out_field_int (uiout, "times", b->hit_count);
	  if (b->hit_count == 1)
	    ui_out_text (uiout, " time\n");
	  else
	    ui_out_text (uiout, " times\n");
	}
      else
	{
	  /* Output the count also if it is zero, but only if this is mi.  */
	  if (ui_out_is_mi_like_p (uiout))
	    ui_out_field_int (uiout, "times", b->hit_count);
	}
    }

  if (!part_of_multiple && b->ignore_count)
    {
      annotate_field (8);
      ui_out_text (uiout, "\tignore next ");
      ui_out_field_int (uiout, "ignore", b->ignore_count);
      ui_out_text (uiout, " hits\n");
    }

  /* Note that an enable count of 1 corresponds to "enable once"
     behavior, which is reported by the combination of enablement and
     disposition, so we don't need to mention it here.  */
  if (!part_of_multiple && b->enable_count > 1)
    {
      annotate_field (8);
      ui_out_text (uiout, "\tdisable after ");
      /* Tweak the wording to clarify that ignore and enable counts
	 are distinct, and have additive effect.  */
      if (b->ignore_count)
	ui_out_text (uiout, "additional ");
      else
	ui_out_text (uiout, "next ");
      ui_out_field_int (uiout, "enable", b->enable_count);
      ui_out_text (uiout, " hits\n");
    }

  if (!part_of_multiple && is_tracepoint (b))
    {
      struct tracepoint *tp = (struct tracepoint *) b;

      if (tp->traceframe_usage)
	{
	  ui_out_text (uiout, "\ttrace buffer usage ");
	  ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage);
	  ui_out_text (uiout, " bytes\n");
	}
    }

  l = b->commands ? b->commands->commands : NULL;
  if (!part_of_multiple && l)
    {
      struct cleanup *script_chain;

      annotate_field (9);
      script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script");
      print_command_lines (uiout, l, 4);
      do_cleanups (script_chain);
    }

  if (is_tracepoint (b))
    {
      struct tracepoint *t = (struct tracepoint *) b;

      if (!part_of_multiple && t->pass_count)
	{
	  annotate_field (10);
	  ui_out_text (uiout, "\tpass count ");
	  ui_out_field_int (uiout, "pass", t->pass_count);
	  ui_out_text (uiout, " \n");
	}

      /* Don't display it when tracepoint or tracepoint location is
	 pending.   */
      if (!header_of_multiple && loc != NULL && !loc->shlib_disabled)
	{
	  annotate_field (11);

	  if (ui_out_is_mi_like_p (uiout))
	    ui_out_field_string (uiout, "installed",
				 loc->inserted ? "y" : "n");
	  else
	    {
	      if (loc->inserted)
		ui_out_text (uiout, "\t");
	      else
		ui_out_text (uiout, "\tnot ");
	      ui_out_text (uiout, "installed on target\n");
	    }
	}
    }

  if (ui_out_is_mi_like_p (uiout) && !part_of_multiple)
    {
      if (is_watchpoint (b))
	{
	  struct watchpoint *w = (struct watchpoint *) b;

	  ui_out_field_string (uiout, "original-location", w->exp_string);
	}
      else if (b->location != NULL
	       && event_location_to_string (b->location) != NULL)
	ui_out_field_string (uiout, "original-location",
			     event_location_to_string (b->location));
    }
}

static void
print_one_breakpoint (struct breakpoint *b,
		      struct bp_location **last_loc, 
		      int allflag)
{
  struct cleanup *bkpt_chain;
  struct ui_out *uiout = current_uiout;

  bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt");

  print_one_breakpoint_location (b, NULL, 0, last_loc, allflag);
  do_cleanups (bkpt_chain);

  /* If this breakpoint has custom print function,
     it's already printed.  Otherwise, print individual
     locations, if any.  */
  if (b->ops == NULL || b->ops->print_one == NULL)
    {
      /* If breakpoint has a single location that is disabled, we
	 print it as if it had several locations, since otherwise it's
	 hard to represent "breakpoint enabled, location disabled"
	 situation.

	 Note that while hardware watchpoints have several locations
	 internally, that's not a property exposed to user.  */
      if (b->loc 
	  && !is_hardware_watchpoint (b)
	  && (b->loc->next || !b->loc->enabled))
	{
	  struct bp_location *loc;
	  int n = 1;

	  for (loc = b->loc; loc; loc = loc->next, ++n)
	    {
	      struct cleanup *inner2 =
		make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
	      print_one_breakpoint_location (b, loc, n, last_loc, allflag);
	      do_cleanups (inner2);
	    }
	}
    }
}

static int
breakpoint_address_bits (struct breakpoint *b)
{
  int print_address_bits = 0;
  struct bp_location *loc;

  /* Software watchpoints that aren't watching memory don't have an
     address to print.  */
  if (is_no_memory_software_watchpoint (b))
    return 0;

  for (loc = b->loc; loc; loc = loc->next)
    {
      int addr_bit;

      addr_bit = gdbarch_addr_bit (loc->gdbarch);
      if (addr_bit > print_address_bits)
	print_address_bits = addr_bit;
    }

  return print_address_bits;
}

struct captured_breakpoint_query_args
  {
    int bnum;
  };

static int
do_captured_breakpoint_query (struct ui_out *uiout, void *data)
{
  struct captured_breakpoint_query_args *args
    = (struct captured_breakpoint_query_args *) data;
  struct breakpoint *b;
  struct bp_location *dummy_loc = NULL;

  ALL_BREAKPOINTS (b)
    {
      if (args->bnum == b->number)
	{
	  print_one_breakpoint (b, &dummy_loc, 0);
	  return GDB_RC_OK;
	}
    }
  return GDB_RC_NONE;
}

enum gdb_rc
gdb_breakpoint_query (struct ui_out *uiout, int bnum, 
		      char **error_message)
{
  struct captured_breakpoint_query_args args;

  args.bnum = bnum;
  /* For the moment we don't trust print_one_breakpoint() to not throw
     an error.  */
  if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args,
				 error_message, RETURN_MASK_ALL) < 0)
    return GDB_RC_FAIL;
  else
    return GDB_RC_OK;
}

/* Return true if this breakpoint was set by the user, false if it is
   internal or momentary.  */

int
user_breakpoint_p (struct breakpoint *b)
{
  return b->number > 0;
}

/* See breakpoint.h.  */

int
pending_breakpoint_p (struct breakpoint *b)
{
  return b->loc == NULL;
}

/* Print information on user settable breakpoint (watchpoint, etc)
   number BNUM.  If BNUM is -1 print all user-settable breakpoints.
   If ALLFLAG is non-zero, include non-user-settable breakpoints.  If
   FILTER is non-NULL, call it on each breakpoint and only include the
   ones for which it returns non-zero.  Return the total number of
   breakpoints listed.  */

static int
breakpoint_1 (char *args, int allflag, 
	      int (*filter) (const struct breakpoint *))
{
  struct breakpoint *b;
  struct bp_location *last_loc = NULL;
  int nr_printable_breakpoints;
  struct cleanup *bkpttbl_chain;
  struct value_print_options opts;
  int print_address_bits = 0;
  int print_type_col_width = 14;
  struct ui_out *uiout = current_uiout;

  get_user_print_options (&opts);

  /* Compute the number of rows in the table, as well as the size
     required for address fields.  */
  nr_printable_breakpoints = 0;
  ALL_BREAKPOINTS (b)
    {
      /* If we have a filter, only list the breakpoints it accepts.  */
      if (filter && !filter (b))
	continue;

      /* If we have an "args" string, it is a list of breakpoints to 
	 accept.  Skip the others.  */
      if (args != NULL && *args != '\0')
	{
	  if (allflag && parse_and_eval_long (args) != b->number)
	    continue;
	  if (!allflag && !number_is_in_list (args, b->number))
	    continue;
	}

      if (allflag || user_breakpoint_p (b))
	{
	  int addr_bit, type_len;

	  addr_bit = breakpoint_address_bits (b);
	  if (addr_bit > print_address_bits)
	    print_address_bits = addr_bit;

	  type_len = strlen (bptype_string (b->type));
	  if (type_len > print_type_col_width)
	    print_type_col_width = type_len;

	  nr_printable_breakpoints++;
	}
    }

  if (opts.addressprint)
    bkpttbl_chain 
      = make_cleanup_ui_out_table_begin_end (uiout, 6,
					     nr_printable_breakpoints,
                                             "BreakpointTable");
  else
    bkpttbl_chain 
      = make_cleanup_ui_out_table_begin_end (uiout, 5,
					     nr_printable_breakpoints,
                                             "BreakpointTable");

  if (nr_printable_breakpoints > 0)
    annotate_breakpoints_headers ();
  if (nr_printable_breakpoints > 0)
    annotate_field (0);
  ui_out_table_header (uiout, 7, ui_left, "number", "Num");	/* 1 */
  if (nr_printable_breakpoints > 0)
    annotate_field (1);
  ui_out_table_header (uiout, print_type_col_width, ui_left,
		       "type", "Type");				/* 2 */
  if (nr_printable_breakpoints > 0)
    annotate_field (2);
  ui_out_table_header (uiout, 4, ui_left, "disp", "Disp");	/* 3 */
  if (nr_printable_breakpoints > 0)
    annotate_field (3);
  ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb");	/* 4 */
  if (opts.addressprint)
    {
      if (nr_printable_breakpoints > 0)
	annotate_field (4);
      if (print_address_bits <= 32)
	ui_out_table_header (uiout, 10, ui_left, 
			     "addr", "Address");		/* 5 */
      else
	ui_out_table_header (uiout, 18, ui_left, 
			     "addr", "Address");		/* 5 */
    }
  if (nr_printable_breakpoints > 0)
    annotate_field (5);
  ui_out_table_header (uiout, 40, ui_noalign, "what", "What");	/* 6 */
  ui_out_table_body (uiout);
  if (nr_printable_breakpoints > 0)
    annotate_breakpoints_table ();

  ALL_BREAKPOINTS (b)
    {
      QUIT;
      /* If we have a filter, only list the breakpoints it accepts.  */
      if (filter && !filter (b))
	continue;

      /* If we have an "args" string, it is a list of breakpoints to 
	 accept.  Skip the others.  */

      if (args != NULL && *args != '\0')
	{
	  if (allflag)	/* maintenance info breakpoint */
	    {
	      if (parse_and_eval_long (args) != b->number)
		continue;
	    }
	  else		/* all others */
	    {
	      if (!number_is_in_list (args, b->number))
		continue;
	    }
	}
      /* We only print out user settable breakpoints unless the
	 allflag is set.  */
      if (allflag || user_breakpoint_p (b))
	print_one_breakpoint (b, &last_loc, allflag);
    }

  do_cleanups (bkpttbl_chain);

  if (nr_printable_breakpoints == 0)
    {
      /* If there's a filter, let the caller decide how to report
	 empty list.  */
      if (!filter)
	{
	  if (args == NULL || *args == '\0')
	    ui_out_message (uiout, "No breakpoints or watchpoints.\n");
	  else
	    ui_out_message (uiout,
			    "No breakpoint or watchpoint matching '%s'.\n",
			    args);
	}
    }
  else
    {
      if (last_loc && !server_command)
	set_next_address (last_loc->gdbarch, last_loc->address);
    }

  /* FIXME?  Should this be moved up so that it is only called when
     there have been breakpoints? */
  annotate_breakpoints_table_end ();

  return nr_printable_breakpoints;
}

/* Display the value of default-collect in a way that is generally
   compatible with the breakpoint list.  */

static void
default_collect_info (void)
{
  struct ui_out *uiout = current_uiout;

  /* If it has no value (which is frequently the case), say nothing; a
     message like "No default-collect." gets in user's face when it's
     not wanted.  */
  if (!*default_collect)
    return;

  /* The following phrase lines up nicely with per-tracepoint collect
     actions.  */
  ui_out_text (uiout, "default collect ");
  ui_out_field_string (uiout, "default-collect", default_collect);
  ui_out_text (uiout, " \n");
}
  
static void
breakpoints_info (char *args, int from_tty)
{
  breakpoint_1 (args, 0, NULL);

  default_collect_info ();
}

static void
watchpoints_info (char *args, int from_tty)
{
  int num_printed = breakpoint_1 (args, 0, is_watchpoint);
  struct ui_out *uiout = current_uiout;

  if (num_printed == 0)
    {
      if (args == NULL || *args == '\0')
	ui_out_message (uiout, "No watchpoints.\n");
      else
	ui_out_message (uiout, "No watchpoint matching '%s'.\n", args);
    }
}

static void
maintenance_info_breakpoints (char *args, int from_tty)
{
  breakpoint_1 (args, 1, NULL);

  default_collect_info ();
}

static int
breakpoint_has_pc (struct breakpoint *b,
		   struct program_space *pspace,
		   CORE_ADDR pc, struct obj_section *section)
{
  struct bp_location *bl = b->loc;

  for (; bl; bl = bl->next)
    {
      if (bl->pspace == pspace
	  && bl->address == pc
	  && (!overlay_debugging || bl->section == section))
	return 1;	  
    }
  return 0;
}

/* Print a message describing any user-breakpoints set at PC.  This
   concerns with logical breakpoints, so we match program spaces, not
   address spaces.  */

static void
describe_other_breakpoints (struct gdbarch *gdbarch,
			    struct program_space *pspace, CORE_ADDR pc,
			    struct obj_section *section, int thread)
{
  int others = 0;
  struct breakpoint *b;

  ALL_BREAKPOINTS (b)
    others += (user_breakpoint_p (b)
               && breakpoint_has_pc (b, pspace, pc, section));
  if (others > 0)
    {
      if (others == 1)
	printf_filtered (_("Note: breakpoint "));
      else /* if (others == ???) */
	printf_filtered (_("Note: breakpoints "));
      ALL_BREAKPOINTS (b)
	if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section))
	  {
	    others--;
	    printf_filtered ("%d", b->number);
	    if (b->thread == -1 && thread != -1)
	      printf_filtered (" (all threads)");
	    else if (b->thread != -1)
	      printf_filtered (" (thread %d)", b->thread);
	    printf_filtered ("%s%s ",
			     ((b->enable_state == bp_disabled
			       || b->enable_state == bp_call_disabled)
			      ? " (disabled)"
			      : ""),
			     (others > 1) ? "," 
			     : ((others == 1) ? " and" : ""));
	  }
      printf_filtered (_("also set at pc "));
      fputs_filtered (paddress (gdbarch, pc), gdb_stdout);
      printf_filtered (".\n");
    }
}


/* Return true iff it is meaningful to use the address member of
   BPT locations.  For some breakpoint types, the locations' address members
   are irrelevant and it makes no sense to attempt to compare them to other
   addresses (or use them for any other purpose either).

   More specifically, each of the following breakpoint types will
   always have a zero valued location address and we don't want to mark
   breakpoints of any of these types to be a duplicate of an actual
   breakpoint location at address zero:

      bp_watchpoint
      bp_catchpoint

*/

static int
breakpoint_address_is_meaningful (struct breakpoint *bpt)
{
  enum bptype type = bpt->type;

  return (type != bp_watchpoint && type != bp_catchpoint);
}

/* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns
   true if LOC1 and LOC2 represent the same watchpoint location.  */

static int
watchpoint_locations_match (struct bp_location *loc1, 
			    struct bp_location *loc2)
{
  struct watchpoint *w1 = (struct watchpoint *) loc1->owner;
  struct watchpoint *w2 = (struct watchpoint *) loc2->owner;

  /* Both of them must exist.  */
  gdb_assert (w1 != NULL);
  gdb_assert (w2 != NULL);

  /* If the target can evaluate the condition expression in hardware,
     then we we need to insert both watchpoints even if they are at
     the same place.  Otherwise the watchpoint will only trigger when
     the condition of whichever watchpoint was inserted evaluates to
     true, not giving a chance for GDB to check the condition of the
     other watchpoint.  */
  if ((w1->cond_exp
       && target_can_accel_watchpoint_condition (loc1->address, 
						 loc1->length,
						 loc1->watchpoint_type,
						 w1->cond_exp.get ()))
      || (w2->cond_exp
	  && target_can_accel_watchpoint_condition (loc2->address, 
						    loc2->length,
						    loc2->watchpoint_type,
						    w2->cond_exp.get ())))
    return 0;

  /* Note that this checks the owner's type, not the location's.  In
     case the target does not support read watchpoints, but does
     support access watchpoints, we'll have bp_read_watchpoint
     watchpoints with hw_access locations.  Those should be considered
     duplicates of hw_read locations.  The hw_read locations will
     become hw_access locations later.  */
  return (loc1->owner->type == loc2->owner->type
	  && loc1->pspace->aspace == loc2->pspace->aspace
	  && loc1->address == loc2->address
	  && loc1->length == loc2->length);
}

/* See breakpoint.h.  */

int
breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1,
			  struct address_space *aspace2, CORE_ADDR addr2)
{
  return ((gdbarch_has_global_breakpoints (target_gdbarch ())
	   || aspace1 == aspace2)
	  && addr1 == addr2);
}

/* Returns true if {ASPACE2,ADDR2} falls within the range determined by
   {ASPACE1,ADDR1,LEN1}.  In most targets, this can only be true if ASPACE1
   matches ASPACE2.  On targets that have global breakpoints, the address
   space doesn't really matter.  */

static int
breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1,
				int len1, struct address_space *aspace2,
				CORE_ADDR addr2)
{
  return ((gdbarch_has_global_breakpoints (target_gdbarch ())
	   || aspace1 == aspace2)
	  && addr2 >= addr1 && addr2 < addr1 + len1);
}

/* Returns true if {ASPACE,ADDR} matches the breakpoint BL.  BL may be
   a ranged breakpoint.  In most targets, a match happens only if ASPACE
   matches the breakpoint's address space.  On targets that have global
   breakpoints, the address space doesn't really matter.  */

static int
breakpoint_location_address_match (struct bp_location *bl,
				   struct address_space *aspace,
				   CORE_ADDR addr)
{
  return (breakpoint_address_match (bl->pspace->aspace, bl->address,
				    aspace, addr)
	  || (bl->length
	      && breakpoint_address_match_range (bl->pspace->aspace,
						 bl->address, bl->length,
						 aspace, addr)));
}

/* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps
   breakpoint BL.  BL may be a ranged breakpoint.  In most targets, a
   match happens only if ASPACE matches the breakpoint's address
   space.  On targets that have global breakpoints, the address space
   doesn't really matter.  */

static int
breakpoint_location_address_range_overlap (struct bp_location *bl,
					   struct address_space *aspace,
					   CORE_ADDR addr, int len)
{
  if (gdbarch_has_global_breakpoints (target_gdbarch ())
      || bl->pspace->aspace == aspace)
    {
      int bl_len = bl->length != 0 ? bl->length : 1;

      if (mem_ranges_overlap (addr, len, bl->address, bl_len))
	return 1;
    }
  return 0;
}

/* If LOC1 and LOC2's owners are not tracepoints, returns false directly.
   Then, if LOC1 and LOC2 represent the same tracepoint location, returns
   true, otherwise returns false.  */

static int
tracepoint_locations_match (struct bp_location *loc1,
			    struct bp_location *loc2)
{
  if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner))
    /* Since tracepoint locations are never duplicated with others', tracepoint
       locations at the same address of different tracepoints are regarded as
       different locations.  */
    return (loc1->address == loc2->address && loc1->owner == loc2->owner);
  else
    return 0;
}

/* Assuming LOC1 and LOC2's types' have meaningful target addresses
   (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2
   represent the same location.  */

static int
breakpoint_locations_match (struct bp_location *loc1, 
			    struct bp_location *loc2)
{
  int hw_point1, hw_point2;

  /* Both of them must not be in moribund_locations.  */
  gdb_assert (loc1->owner != NULL);
  gdb_assert (loc2->owner != NULL);

  hw_point1 = is_hardware_watchpoint (loc1->owner);
  hw_point2 = is_hardware_watchpoint (loc2->owner);

  if (hw_point1 != hw_point2)
    return 0;
  else if (hw_point1)
    return watchpoint_locations_match (loc1, loc2);
  else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner))
    return tracepoint_locations_match (loc1, loc2);
  else
    /* We compare bp_location.length in order to cover ranged breakpoints.  */
    return (breakpoint_address_match (loc1->pspace->aspace, loc1->address,
				     loc2->pspace->aspace, loc2->address)
	    && loc1->length == loc2->length);
}

static void
breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr,
                               int bnum, int have_bnum)
{
  /* The longest string possibly returned by hex_string_custom
     is 50 chars.  These must be at least that big for safety.  */
  char astr1[64];
  char astr2[64];

  strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8));
  strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8));
  if (have_bnum)
    warning (_("Breakpoint %d address previously adjusted from %s to %s."),
             bnum, astr1, astr2);
  else
    warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2);
}

/* Adjust a breakpoint's address to account for architectural
   constraints on breakpoint placement.  Return the adjusted address.
   Note: Very few targets require this kind of adjustment.  For most
   targets, this function is simply the identity function.  */

static CORE_ADDR
adjust_breakpoint_address (struct gdbarch *gdbarch,
			   CORE_ADDR bpaddr, enum bptype bptype)
{
  if (!gdbarch_adjust_breakpoint_address_p (gdbarch))
    {
      /* Very few targets need any kind of breakpoint adjustment.  */
      return bpaddr;
    }
  else if (bptype == bp_watchpoint
           || bptype == bp_hardware_watchpoint
           || bptype == bp_read_watchpoint
           || bptype == bp_access_watchpoint
           || bptype == bp_catchpoint)
    {
      /* Watchpoints and the various bp_catch_* eventpoints should not
         have their addresses modified.  */
      return bpaddr;
    }
  else if (bptype == bp_single_step)
    {
      /* Single-step breakpoints should not have their addresses
	 modified.  If there's any architectural constrain that
	 applies to this address, then it should have already been
	 taken into account when the breakpoint was created in the
	 first place.  If we didn't do this, stepping through e.g.,
	 Thumb-2 IT blocks would break.  */
      return bpaddr;
    }
  else
    {
      CORE_ADDR adjusted_bpaddr;

      /* Some targets have architectural constraints on the placement
         of breakpoint instructions.  Obtain the adjusted address.  */
      adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr);

      /* An adjusted breakpoint address can significantly alter
         a user's expectations.  Print a warning if an adjustment
	 is required.  */
      if (adjusted_bpaddr != bpaddr)
	breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0);

      return adjusted_bpaddr;
    }
}

void
init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops,
		  struct breakpoint *owner)
{
  memset (loc, 0, sizeof (*loc));

  gdb_assert (ops != NULL);

  loc->ops = ops;
  loc->owner = owner;
  loc->cond_bytecode = NULL;
  loc->shlib_disabled = 0;
  loc->enabled = 1;

  switch (owner->type)
    {
    case bp_breakpoint:
    case bp_single_step:
    case bp_until:
    case bp_finish:
    case bp_longjmp:
    case bp_longjmp_resume:
    case bp_longjmp_call_dummy:
    case bp_exception:
    case bp_exception_resume:
    case bp_step_resume:
    case bp_hp_step_resume:
    case bp_watchpoint_scope:
    case bp_call_dummy:
    case bp_std_terminate:
    case bp_shlib_event:
    case bp_thread_event:
    case bp_overlay_event:
    case bp_jit_event:
    case bp_longjmp_master:
    case bp_std_terminate_master:
    case bp_exception_master:
    case bp_gnu_ifunc_resolver:
    case bp_gnu_ifunc_resolver_return:
    case bp_dprintf:
      loc->loc_type = bp_loc_software_breakpoint;
      mark_breakpoint_location_modified (loc);
      break;
    case bp_hardware_breakpoint:
      loc->loc_type = bp_loc_hardware_breakpoint;
      mark_breakpoint_location_modified (loc);
      break;
    case bp_hardware_watchpoint:
    case bp_read_watchpoint:
    case bp_access_watchpoint:
      loc->loc_type = bp_loc_hardware_watchpoint;
      break;
    case bp_watchpoint:
    case bp_catchpoint:
    case bp_tracepoint:
    case bp_fast_tracepoint:
    case bp_static_tracepoint:
      loc->loc_type = bp_loc_other;
      break;
    default:
      internal_error (__FILE__, __LINE__, _("unknown breakpoint type"));
    }

  loc->refc = 1;
}

/* Allocate a struct bp_location.  */

static struct bp_location *
allocate_bp_location (struct breakpoint *bpt)
{
  return bpt->ops->allocate_location (bpt);
}

static void
free_bp_location (struct bp_location *loc)
{
  loc->ops->dtor (loc);
  delete loc;
}

/* Increment reference count.  */

static void
incref_bp_location (struct bp_location *bl)
{
  ++bl->refc;
}

/* Decrement reference count.  If the reference count reaches 0,
   destroy the bp_location.  Sets *BLP to NULL.  */

static void
decref_bp_location (struct bp_location **blp)
{
  gdb_assert ((*blp)->refc > 0);

  if (--(*blp)->refc == 0)
    free_bp_location (*blp);
  *blp = NULL;
}

/* Add breakpoint B at the end of the global breakpoint chain.  */

static void
add_to_breakpoint_chain (struct breakpoint *b)
{
  struct breakpoint *b1;

  /* Add this breakpoint to the end of the chain so that a list of
     breakpoints will come out in order of increasing numbers.  */

  b1 = breakpoint_chain;
  if (b1 == 0)
    breakpoint_chain = b;
  else
    {
      while (b1->next)
	b1 = b1->next;
      b1->next = b;
    }
}

/* Initializes breakpoint B with type BPTYPE and no locations yet.  */

static void
init_raw_breakpoint_without_location (struct breakpoint *b,
				      struct gdbarch *gdbarch,
				      enum bptype bptype,
				      const struct breakpoint_ops *ops)
{
  memset (b, 0, sizeof (*b));

  gdb_assert (ops != NULL);

  b->ops = ops;
  b->type = bptype;
  b->gdbarch = gdbarch;
  b->language = current_language->la_language;
  b->input_radix = input_radix;
  b->thread = -1;
  b->enable_state = bp_enabled;
  b->next = 0;
  b->silent = 0;
  b->ignore_count = 0;
  b->commands = NULL;
  b->frame_id = null_frame_id;
  b->condition_not_parsed = 0;
  b->py_bp_object = NULL;
  b->related_breakpoint = b;
  b->location = NULL;
}

/* Helper to set_raw_breakpoint below.  Creates a breakpoint
   that has type BPTYPE and has no locations as yet.  */

static struct breakpoint *
set_raw_breakpoint_without_location (struct gdbarch *gdbarch,
				     enum bptype bptype,
				     const struct breakpoint_ops *ops)
{
  struct breakpoint *b = new breakpoint ();

  init_raw_breakpoint_without_location (b, gdbarch, bptype, ops);
  add_to_breakpoint_chain (b);
  return b;
}

/* Initialize loc->function_name.  EXPLICIT_LOC says no indirect function
   resolutions should be made as the user specified the location explicitly
   enough.  */

static void
set_breakpoint_location_function (struct bp_location *loc, int explicit_loc)
{
  gdb_assert (loc->owner != NULL);

  if (loc->owner->type == bp_breakpoint
      || loc->owner->type == bp_hardware_breakpoint
      || is_tracepoint (loc->owner))
    {
      int is_gnu_ifunc;
      const char *function_name;
      CORE_ADDR func_addr;

      find_pc_partial_function_gnu_ifunc (loc->address, &function_name,
					  &func_addr, NULL, &is_gnu_ifunc);

      if (is_gnu_ifunc && !explicit_loc)
	{
	  struct breakpoint *b = loc->owner;

	  gdb_assert (loc->pspace == current_program_space);
	  if (gnu_ifunc_resolve_name (function_name,
				      &loc->requested_address))
	    {
	      /* Recalculate ADDRESS based on new REQUESTED_ADDRESS.  */
	      loc->address = adjust_breakpoint_address (loc->gdbarch,
							loc->requested_address,
							b->type);
	    }
	  else if (b->type == bp_breakpoint && b->loc == loc
	           && loc->next == NULL && b->related_breakpoint == b)
	    {
	      /* Create only the whole new breakpoint of this type but do not
		 mess more complicated breakpoints with multiple locations.  */
	      b->type = bp_gnu_ifunc_resolver;
	      /* Remember the resolver's address for use by the return
	         breakpoint.  */
	      loc->related_address = func_addr;
	    }
	}

      if (function_name)
	loc->function_name = xstrdup (function_name);
    }
}

/* Attempt to determine architecture of location identified by SAL.  */
struct gdbarch *
get_sal_arch (struct symtab_and_line sal)
{
  if (sal.section)
    return get_objfile_arch (sal.section->objfile);
  if (sal.symtab)
    return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab));

  return NULL;
}

/* Low level routine for partially initializing a breakpoint of type
   BPTYPE.  The newly created breakpoint's address, section, source
   file name, and line number are provided by SAL.

   It is expected that the caller will complete the initialization of
   the newly created breakpoint struct as well as output any status
   information regarding the creation of a new breakpoint.  */

static void
init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch,
		     struct symtab_and_line sal, enum bptype bptype,
		     const struct breakpoint_ops *ops)
{
  init_raw_breakpoint_without_location (b, gdbarch, bptype, ops);

  add_location_to_breakpoint (b, &sal);

  if (bptype != bp_catchpoint)
    gdb_assert (sal.pspace != NULL);

  /* Store the program space that was used to set the breakpoint,
     except for ordinary breakpoints, which are independent of the
     program space.  */
  if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint)
    b->pspace = sal.pspace;
}

/* set_raw_breakpoint is a low level routine for allocating and
   partially initializing a breakpoint of type BPTYPE.  The newly
   created breakpoint's address, section, source file name, and line
   number are provided by SAL.  The newly created and partially
   initialized breakpoint is added to the breakpoint chain and
   is also returned as the value of this function.

   It is expected that the caller will complete the initialization of
   the newly created breakpoint struct as well as output any status
   information regarding the creation of a new breakpoint.  In
   particular, set_raw_breakpoint does NOT set the breakpoint
   number!  Care should be taken to not allow an error to occur
   prior to completing the initialization of the breakpoint.  If this
   should happen, a bogus breakpoint will be left on the chain.  */

struct breakpoint *
set_raw_breakpoint (struct gdbarch *gdbarch,
		    struct symtab_and_line sal, enum bptype bptype,
		    const struct breakpoint_ops *ops)
{
  struct breakpoint *b = new breakpoint ();

  init_raw_breakpoint (b, gdbarch, sal, bptype, ops);
  add_to_breakpoint_chain (b);
  return b;
}

/* Call this routine when stepping and nexting to enable a breakpoint
   if we do a longjmp() or 'throw' in TP.  FRAME is the frame which
   initiated the operation.  */

void
set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame)
{
  struct breakpoint *b, *b_tmp;
  int thread = tp->global_num;

  /* To avoid having to rescan all objfile symbols at every step,
     we maintain a list of continually-inserted but always disabled
     longjmp "master" breakpoints.  Here, we simply create momentary
     clones of those and enable them for the requested thread.  */
  ALL_BREAKPOINTS_SAFE (b, b_tmp)
    if (b->pspace == current_program_space
	&& (b->type == bp_longjmp_master
	    || b->type == bp_exception_master))
      {
	enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception;
	struct breakpoint *clone;

	/* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again
	   after their removal.  */
	clone = momentary_breakpoint_from_master (b, type,
						  &longjmp_breakpoint_ops, 1);
	clone->thread = thread;
      }

  tp->initiating_frame = frame;
}

/* Delete all longjmp breakpoints from THREAD.  */
void
delete_longjmp_breakpoint (int thread)
{
  struct breakpoint *b, *b_tmp;

  ALL_BREAKPOINTS_SAFE (b, b_tmp)
    if (b->type == bp_longjmp || b->type == bp_exception)
      {
	if (b->thread == thread)
	  delete_breakpoint (b);
      }
}

void
delete_longjmp_breakpoint_at_next_stop (int thread)
{
  struct breakpoint *b, *b_tmp;

  ALL_BREAKPOINTS_SAFE (b, b_tmp)
    if (b->type == bp_longjmp || b->type == bp_exception)
      {
	if (b->thread == thread)
	  b->disposition = disp_del_at_next_stop;
      }
}

/* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for
   INFERIOR_PTID thread.  Chain them all by RELATED_BREAKPOINT and return
   pointer to any of them.  Return NULL if this system cannot place longjmp
   breakpoints.  */

struct breakpoint *
set_longjmp_breakpoint_for_call_dummy (void)
{
  struct breakpoint *b, *retval = NULL;

  ALL_BREAKPOINTS (b)
    if (b->pspace == current_program_space && b->type == bp_longjmp_master)
      {
	struct breakpoint *new_b;

	new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy,
						  &momentary_breakpoint_ops,
						  1);
	new_b->thread = ptid_to_global_thread_id (inferior_ptid);

	/* Link NEW_B into the chain of RETVAL breakpoints.  */

	gdb_assert (new_b->related_breakpoint == new_b);
	if (retval == NULL)
	  retval = new_b;
	new_b->related_breakpoint = retval;
	while (retval->related_breakpoint != new_b->related_breakpoint)
	  retval = retval->related_breakpoint;
	retval->related_breakpoint = new_b;
      }

  return retval;
}

/* Verify all existing dummy frames and their associated breakpoints for
   TP.  Remove those which can no longer be found in the current frame
   stack.

   You should call this function only at places where it is safe to currently
   unwind the whole stack.  Failed stack unwind would discard live dummy
   frames.  */

void
check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp)
{
  struct breakpoint *b, *b_tmp;

  ALL_BREAKPOINTS_SAFE (b, b_tmp)
    if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num)
      {
	struct breakpoint *dummy_b = b->related_breakpoint;

	while (dummy_b != b && dummy_b->type != bp_call_dummy)
	  dummy_b = dummy_b->related_breakpoint;
	if (dummy_b->type != bp_call_dummy
	    || frame_find_by_id (dummy_b->frame_id) != NULL)
	  continue;
	
	dummy_frame_discard (dummy_b->frame_id, tp->ptid);

	while (b->related_breakpoint != b)
	  {
	    if (b_tmp == b->related_breakpoint)
	      b_tmp = b->related_breakpoint->next;
	    delete_breakpoint (b->related_breakpoint);
	  }
	delete_breakpoint (b);
      }
}

void
enable_overlay_breakpoints (void)
{
  struct breakpoint *b;

  ALL_BREAKPOINTS (b)
    if (b->type == bp_overlay_event)
    {
      b->enable_state = bp_enabled;
      update_global_location_list (UGLL_MAY_INSERT);
      overlay_events_enabled = 1;
    }
}

void
disable_overlay_breakpoints (void)
{
  struct breakpoint *b;

  ALL_BREAKPOINTS (b)
    if (b->type == bp_overlay_event)
    {
      b->enable_state = bp_disabled;
      update_global_location_list (UGLL_DONT_INSERT);
      overlay_events_enabled = 0;
    }
}

/* Set an active std::terminate breakpoint for each std::terminate
   master breakpoint.  */
void
set_std_terminate_breakpoint (void)
{
  struct breakpoint *b, *b_tmp;

  ALL_BREAKPOINTS_SAFE (b, b_tmp)
    if (b->pspace == current_program_space
	&& b->type == bp_std_terminate_master)
      {
	momentary_breakpoint_from_master (b, bp_std_terminate,
					  &momentary_breakpoint_ops, 1);
      }
}

/* Delete all the std::terminate breakpoints.  */
void
delete_std_terminate_breakpoint (void)
{
  struct breakpoint *b, *b_tmp;

  ALL_BREAKPOINTS_SAFE (b, b_tmp)
    if (b->type == bp_std_terminate)
      delete_breakpoint (b);
}

struct breakpoint *
create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address)
{
  struct breakpoint *b;

  b = create_internal_breakpoint (gdbarch, address, bp_thread_event,
				  &internal_breakpoint_ops);

  b->enable_state = bp_enabled;
  /* location has to be used or breakpoint_re_set will delete me.  */
  b->location = new_address_location (b->loc->address, NULL, 0);

  update_global_location_list_nothrow (UGLL_MAY_INSERT);

  return b;
}

struct lang_and_radix
  {
    enum language lang;
    int radix;
  };

/* Create a breakpoint for JIT code registration and unregistration.  */

struct breakpoint *
create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address)
{
  return create_internal_breakpoint (gdbarch, address, bp_jit_event,
				     &internal_breakpoint_ops);
}

/* Remove JIT code registration and unregistration breakpoint(s).  */

void
remove_jit_event_breakpoints (void)
{
  struct breakpoint *b, *b_tmp;

  ALL_BREAKPOINTS_SAFE (b, b_tmp)
    if (b->type == bp_jit_event
	&& b->loc->pspace == current_program_space)
      delete_breakpoint (b);
}

void
remove_solib_event_breakpoints (void)
{
  struct breakpoint *b, *b_tmp;

  ALL_BREAKPOINTS_SAFE (b, b_tmp)
    if (b->type == bp_shlib_event
	&& b->loc->pspace == current_program_space)
      delete_breakpoint (b);
}

/* See breakpoint.h.  */

void
remove_solib_event_breakpoints_at_next_stop (void)
{
  struct breakpoint *b, *b_tmp;

  ALL_BREAKPOINTS_SAFE (b, b_tmp)
    if (b->type == bp_shlib_event
	&& b->loc->pspace == current_program_space)
      b->disposition = disp_del_at_next_stop;
}

/* Helper for create_solib_event_breakpoint /
   create_and_insert_solib_event_breakpoint.  Allows specifying which
   INSERT_MODE to pass through to update_global_location_list.  */

static struct breakpoint *
create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address,
				 enum ugll_insert_mode insert_mode)
{
  struct breakpoint *b;

  b = create_internal_breakpoint (gdbarch, address, bp_shlib_event,
				  &internal_breakpoint_ops);
  update_global_location_list_nothrow (insert_mode);
  return b;
}

struct breakpoint *
create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address)
{
  return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT);
}

/* See breakpoint.h.  */

struct breakpoint *
create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address)
{
  struct breakpoint *b;

  /* Explicitly tell update_global_location_list to insert
     locations.  */
  b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT);
  if (!b->loc->inserted)
    {
      delete_breakpoint (b);
      return NULL;
    }
  return b;
}

/* Disable any breakpoints that are on code in shared libraries.  Only
   apply to enabled breakpoints, disabled ones can just stay disabled.  */

void
disable_breakpoints_in_shlibs (void)
{
  struct bp_location *loc, **locp_tmp;

  ALL_BP_LOCATIONS (loc, locp_tmp)
  {
    /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL.  */
    struct breakpoint *b = loc->owner;

    /* We apply the check to all breakpoints, including disabled for
       those with loc->duplicate set.  This is so that when breakpoint
       becomes enabled, or the duplicate is removed, gdb will try to
       insert all breakpoints.  If we don't set shlib_disabled here,
       we'll try to insert those breakpoints and fail.  */
    if (((b->type == bp_breakpoint)
	 || (b->type == bp_jit_event)
	 || (b->type == bp_hardware_breakpoint)
	 || (is_tracepoint (b)))
	&& loc->pspace == current_program_space
	&& !loc->shlib_disabled
	&& solib_name_from_address (loc->pspace, loc->address)
	)
      {
	loc->shlib_disabled = 1;
      }
  }
}

/* Disable any breakpoints and tracepoints that are in SOLIB upon
   notification of unloaded_shlib.  Only apply to enabled breakpoints,
   disabled ones can just stay disabled.  */

static void
disable_breakpoints_in_unloaded_shlib (struct so_list *solib)
{
  struct bp_location *loc, **locp_tmp;
  int disabled_shlib_breaks = 0;

  ALL_BP_LOCATIONS (loc, locp_tmp)
  {
    /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL.  */
    struct breakpoint *b = loc->owner;

    if (solib->pspace == loc->pspace
	&& !loc->shlib_disabled
	&& (((b->type == bp_breakpoint
	      || b->type == bp_jit_event
	      || b->type == bp_hardware_breakpoint)
	     && (loc->loc_type == bp_loc_hardware_breakpoint
		 || loc->loc_type == bp_loc_software_breakpoint))
	    || is_tracepoint (b))
	&& solib_contains_address_p (solib, loc->address))
      {
	loc->shlib_disabled = 1;
	/* At this point, we cannot rely on remove_breakpoint
	   succeeding so we must mark the breakpoint as not inserted
	   to prevent future errors occurring in remove_breakpoints.  */
	loc->inserted = 0;

	/* This may cause duplicate notifications for the same breakpoint.  */
	observer_notify_breakpoint_modified (b);

	if (!disabled_shlib_breaks)
	  {
	    target_terminal_ours_for_output ();
	    warning (_("Temporarily disabling breakpoints "
		       "for unloaded shared library \"%s\""),
		     solib->so_name);
	  }
	disabled_shlib_breaks = 1;
      }
  }
}

/* Disable any breakpoints and tracepoints in OBJFILE upon
   notification of free_objfile.  Only apply to enabled breakpoints,
   disabled ones can just stay disabled.  */

static void
disable_breakpoints_in_freed_objfile (struct objfile *objfile)
{
  struct breakpoint *b;

  if (objfile == NULL)
    return;

  /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually
     managed by the user with add-symbol-file/remove-symbol-file.
     Similarly to how breakpoints in shared libraries are handled in
     response to "nosharedlibrary", mark breakpoints in such modules
     shlib_disabled so they end up uninserted on the next global
     location list update.  Shared libraries not loaded by the user
     aren't handled here -- they're already handled in
     disable_breakpoints_in_unloaded_shlib, called by solib.c's
     solib_unloaded observer.  We skip objfiles that are not
     OBJF_SHARED as those aren't considered dynamic objects (e.g. the
     main objfile).  */
  if ((objfile->flags & OBJF_SHARED) == 0
      || (objfile->flags & OBJF_USERLOADED) == 0)
    return;

  ALL_BREAKPOINTS (b)
    {
      struct bp_location *loc;
      int bp_modified = 0;

      if (!is_breakpoint (b) && !is_tracepoint (b))
	continue;

      for (loc = b->loc; loc != NULL; loc = loc->next)
	{
	  CORE_ADDR loc_addr = loc->address;

	  if (loc->loc_type != bp_loc_hardware_breakpoint
	      && loc->loc_type != bp_loc_software_breakpoint)
	    continue;

	  if (loc->shlib_disabled != 0)
	    continue;

	  if (objfile->pspace != loc->pspace)
	    continue;

	  if (loc->loc_type != bp_loc_hardware_breakpoint
	      && loc->loc_type != bp_loc_software_breakpoint)
	    continue;

	  if (is_addr_in_objfile (loc_addr, objfile))
	    {
	      loc->shlib_disabled = 1;
	      /* At this point, we don't know whether the object was
		 unmapped from the inferior or not, so leave the
		 inserted flag alone.  We'll handle failure to
		 uninsert quietly, in case the object was indeed
		 unmapped.  */

	      mark_breakpoint_location_modified (loc);

	      bp_modified = 1;
	    }
	}

      if (bp_modified)
	observer_notify_breakpoint_modified (b);
    }
}

/* FORK & VFORK catchpoints.  */

/* An instance of this type is used to represent a fork or vfork
   catchpoint.  It includes a "struct breakpoint" as a kind of base
   class; users downcast to "struct breakpoint *" when needed.  A
   breakpoint is really of this type iff its ops pointer points to
   CATCH_FORK_BREAKPOINT_OPS.  */

struct fork_catchpoint
{
  /* The base class.  */
  struct breakpoint base;

  /* Process id of a child process whose forking triggered this
     catchpoint.  This field is only valid immediately after this
     catchpoint has triggered.  */
  ptid_t forked_inferior_pid;
};

/* Implement the "insert" breakpoint_ops method for fork
   catchpoints.  */

static int
insert_catch_fork (struct bp_location *bl)
{
  return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid));
}

/* Implement the "remove" breakpoint_ops method for fork
   catchpoints.  */

static int
remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason)
{
  return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid));
}

/* Implement the "breakpoint_hit" breakpoint_ops method for fork
   catchpoints.  */

static int
breakpoint_hit_catch_fork (const struct bp_location *bl,
			   struct address_space *aspace, CORE_ADDR bp_addr,
			   const struct target_waitstatus *ws)
{
  struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner;

  if (ws->kind != TARGET_WAITKIND_FORKED)
    return 0;

  c->forked_inferior_pid = ws->value.related_pid;
  return 1;
}

/* Implement the "print_it" breakpoint_ops method for fork
   catchpoints.  */

static enum print_stop_action
print_it_catch_fork (bpstat bs)
{
  struct ui_out *uiout = current_uiout;
  struct breakpoint *b = bs->breakpoint_at;
  struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at;

  annotate_catchpoint (b->number);
  maybe_print_thread_hit_breakpoint (uiout);
  if (b->disposition == disp_del)
    ui_out_text (uiout, "Temporary catchpoint ");
  else
    ui_out_text (uiout, "Catchpoint ");
  if (ui_out_is_mi_like_p (uiout))
    {
      ui_out_field_string (uiout, "reason",
			   async_reason_lookup (EXEC_ASYNC_FORK));
      ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
    }
  ui_out_field_int (uiout, "bkptno", b->number);
  ui_out_text (uiout, " (forked process ");
  ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid));
  ui_out_text (uiout, "), ");
  return PRINT_SRC_AND_LOC;
}

/* Implement the "print_one" breakpoint_ops method for fork
   catchpoints.  */

static void
print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc)
{
  struct fork_catchpoint *c = (struct fork_catchpoint *) b;
  struct value_print_options opts;
  struct ui_out *uiout = current_uiout;

  get_user_print_options (&opts);

  /* Field 4, the address, is omitted (which makes the columns not
     line up too nicely with the headers, but the effect is relatively
     readable).  */
  if (opts.addressprint)
    ui_out_field_skip (uiout, "addr");
  annotate_field (5);
  ui_out_text (uiout, "fork");
  if (!ptid_equal (c->forked_inferior_pid, null_ptid))
    {
      ui_out_text (uiout, ", process ");
      ui_out_field_int (uiout, "what",
                        ptid_get_pid (c->forked_inferior_pid));
      ui_out_spaces (uiout, 1);
    }

  if (ui_out_is_mi_like_p (uiout))
    ui_out_field_string (uiout, "catch-type", "fork");
}

/* Implement the "print_mention" breakpoint_ops method for fork
   catchpoints.  */

static void
print_mention_catch_fork (struct breakpoint *b)
{
  printf_filtered (_("Catchpoint %d (fork)"), b->number);
}

/* Implement the "print_recreate" breakpoint_ops method for fork
   catchpoints.  */

static void
print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp)
{
  fprintf_unfiltered (fp, "catch fork");
  print_recreate_thread (b, fp);
}

/* The breakpoint_ops structure to be used in fork catchpoints.  */

static struct breakpoint_ops catch_fork_breakpoint_ops;

/* Implement the "insert" breakpoint_ops method for vfork
   catchpoints.  */

static int
insert_catch_vfork (struct bp_location *bl)
{
  return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid));
}

/* Implement the "remove" breakpoint_ops method for vfork
   catchpoints.  */

static int
remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason)
{
  return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid));
}

/* Implement the "breakpoint_hit" breakpoint_ops method for vfork
   catchpoints.  */

static int
breakpoint_hit_catch_vfork (const struct bp_location *bl,
			    struct address_space *aspace, CORE_ADDR bp_addr,
			    const struct target_waitstatus *ws)
{
  struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner;

  if (ws->kind != TARGET_WAITKIND_VFORKED)
    return 0;

  c->forked_inferior_pid = ws->value.related_pid;
  return 1;
}

/* Implement the "print_it" breakpoint_ops method for vfork
   catchpoints.  */

static enum print_stop_action
print_it_catch_vfork (bpstat bs)
{
  struct ui_out *uiout = current_uiout;
  struct breakpoint *b = bs->breakpoint_at;
  struct fork_catchpoint *c = (struct fork_catchpoint *) b;

  annotate_catchpoint (b->number);
  maybe_print_thread_hit_breakpoint (uiout);
  if (b->disposition == disp_del)
    ui_out_text (uiout, "Temporary catchpoint ");
  else
    ui_out_text (uiout, "Catchpoint ");
  if (ui_out_is_mi_like_p (uiout))
    {
      ui_out_field_string (uiout, "reason",
			   async_reason_lookup (EXEC_ASYNC_VFORK));
      ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
    }
  ui_out_field_int (uiout, "bkptno", b->number);
  ui_out_text (uiout, " (vforked process ");
  ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid));
  ui_out_text (uiout, "), ");
  return PRINT_SRC_AND_LOC;
}

/* Implement the "print_one" breakpoint_ops method for vfork
   catchpoints.  */

static void
print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc)
{
  struct fork_catchpoint *c = (struct fork_catchpoint *) b;
  struct value_print_options opts;
  struct ui_out *uiout = current_uiout;

  get_user_print_options (&opts);
  /* Field 4, the address, is omitted (which makes the columns not
     line up too nicely with the headers, but the effect is relatively
     readable).  */
  if (opts.addressprint)
    ui_out_field_skip (uiout, "addr");
  annotate_field (5);
  ui_out_text (uiout, "vfork");
  if (!ptid_equal (c->forked_inferior_pid, null_ptid))
    {
      ui_out_text (uiout, ", process ");
      ui_out_field_int (uiout, "what",
                        ptid_get_pid (c->forked_inferior_pid));
      ui_out_spaces (uiout, 1);
    }

  if (ui_out_is_mi_like_p (uiout))
    ui_out_field_string (uiout, "catch-type", "vfork");
}

/* Implement the "print_mention" breakpoint_ops method for vfork
   catchpoints.  */

static void
print_mention_catch_vfork (struct breakpoint *b)
{
  printf_filtered (_("Catchpoint %d (vfork)"), b->number);
}

/* Implement the "print_recreate" breakpoint_ops method for vfork
   catchpoints.  */

static void
print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp)
{
  fprintf_unfiltered (fp, "catch vfork");
  print_recreate_thread (b, fp);
}

/* The breakpoint_ops structure to be used in vfork catchpoints.  */

static struct breakpoint_ops catch_vfork_breakpoint_ops;

/* An instance of this type is used to represent an solib catchpoint.
   It includes a "struct breakpoint" as a kind of base class; users
   downcast to "struct breakpoint *" when needed.  A breakpoint is
   really of this type iff its ops pointer points to
   CATCH_SOLIB_BREAKPOINT_OPS.  */

struct solib_catchpoint
{
  /* The base class.  */
  struct breakpoint base;

  /* True for "catch load", false for "catch unload".  */
  unsigned char is_load;

  /* Regular expression to match, if any.  COMPILED is only valid when
     REGEX is non-NULL.  */
  char *regex;
  regex_t compiled;
};

static void
dtor_catch_solib (struct breakpoint *b)
{
  struct solib_catchpoint *self = (struct solib_catchpoint *) b;

  if (self->regex)
    regfree (&self->compiled);
  xfree (self->regex);

  base_breakpoint_ops.dtor (b);
}

static int
insert_catch_solib (struct bp_location *ignore)
{
  return 0;
}

static int
remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason)
{
  return 0;
}

static int
breakpoint_hit_catch_solib (const struct bp_location *bl,
			    struct address_space *aspace,
			    CORE_ADDR bp_addr,
			    const struct target_waitstatus *ws)
{
  struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner;
  struct breakpoint *other;

  if (ws->kind == TARGET_WAITKIND_LOADED)
    return 1;

  ALL_BREAKPOINTS (other)
  {
    struct bp_location *other_bl;

    if (other == bl->owner)
      continue;

    if (other->type != bp_shlib_event)
      continue;

    if (self->base.pspace != NULL && other->pspace != self->base.pspace)
      continue;

    for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next)
      {
	if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws))
	  return 1;
      }
  }

  return 0;
}

static void
check_status_catch_solib (struct bpstats *bs)
{
  struct solib_catchpoint *self
    = (struct solib_catchpoint *) bs->breakpoint_at;
  int ix;

  if (self->is_load)
    {
      struct so_list *iter;

      for (ix = 0;
	   VEC_iterate (so_list_ptr, current_program_space->added_solibs,
			ix, iter);
	   ++ix)
	{
	  if (!self->regex
	      || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0)
	    return;
	}
    }
  else
    {
      char *iter;

      for (ix = 0;
	   VEC_iterate (char_ptr, current_program_space->deleted_solibs,
			ix, iter);
	   ++ix)
	{
	  if (!self->regex
	      || regexec (&self->compiled, iter, 0, NULL, 0) == 0)
	    return;
	}
    }

  bs->stop = 0;
  bs->print_it = print_it_noop;
}

static enum print_stop_action
print_it_catch_solib (bpstat bs)
{
  struct breakpoint *b = bs->breakpoint_at;
  struct ui_out *uiout = current_uiout;

  annotate_catchpoint (b->number);
  maybe_print_thread_hit_breakpoint (uiout);
  if (b->disposition == disp_del)
    ui_out_text (uiout, "Temporary catchpoint ");
  else
    ui_out_text (uiout, "Catchpoint ");
  ui_out_field_int (uiout, "bkptno", b->number);
  ui_out_text (uiout, "\n");
  if (ui_out_is_mi_like_p (uiout))
    ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
  print_solib_event (1);
  return PRINT_SRC_AND_LOC;
}

static void
print_one_catch_solib (struct breakpoint *b, struct bp_location **locs)
{
  struct solib_catchpoint *self = (struct solib_catchpoint *) b;
  struct value_print_options opts;
  struct ui_out *uiout = current_uiout;
  char *msg;

  get_user_print_options (&opts);
  /* Field 4, the address, is omitted (which makes the columns not
     line up too nicely with the headers, but the effect is relatively
     readable).  */
  if (opts.addressprint)
    {
      annotate_field (4);
      ui_out_field_skip (uiout, "addr");
    }

  annotate_field (5);
  if (self->is_load)
    {
      if (self->regex)
	msg = xstrprintf (_("load of library matching %s"), self->regex);
      else
	msg = xstrdup (_("load of library"));
    }
  else
    {
      if (self->regex)
	msg = xstrprintf (_("unload of library matching %s"), self->regex);
      else
	msg = xstrdup (_("unload of library"));
    }
  ui_out_field_string (uiout, "what", msg);
  xfree (msg);

  if (ui_out_is_mi_like_p (uiout))
    ui_out_field_string (uiout, "catch-type",
			 self->is_load ? "load" : "unload");
}

static void
print_mention_catch_solib (struct breakpoint *b)
{
  struct solib_catchpoint *self = (struct solib_catchpoint *) b;

  printf_filtered (_("Catchpoint %d (%s)"), b->number,
		   self->is_load ? "load" : "unload");
}

static void
print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp)
{
  struct solib_catchpoint *self = (struct solib_catchpoint *) b;

  fprintf_unfiltered (fp, "%s %s",
		      b->disposition == disp_del ? "tcatch" : "catch",
		      self->is_load ? "load" : "unload");
  if (self->regex)
    fprintf_unfiltered (fp, " %s", self->regex);
  fprintf_unfiltered (fp, "\n");
}

static struct breakpoint_ops catch_solib_breakpoint_ops;

/* Shared helper function (MI and CLI) for creating and installing
   a shared object event catchpoint.  If IS_LOAD is non-zero then
   the events to be caught are load events, otherwise they are
   unload events.  If IS_TEMP is non-zero the catchpoint is a
   temporary one.  If ENABLED is non-zero the catchpoint is
   created in an enabled state.  */

void
add_solib_catchpoint (char *arg, int is_load, int is_temp, int enabled)
{
  struct solib_catchpoint *c;
  struct gdbarch *gdbarch = get_current_arch ();
  struct cleanup *cleanup;

  if (!arg)
    arg = "";
  arg = skip_spaces (arg);

  c = new solib_catchpoint ();
  cleanup = make_cleanup (xfree, c);

  if (*arg != '\0')
    {
      int errcode;

      errcode = regcomp (&c->compiled, arg, REG_NOSUB);
      if (errcode != 0)
	{
	  char *err = get_regcomp_error (errcode, &c->compiled);

	  make_cleanup (xfree, err);
	  error (_("Invalid regexp (%s): %s"), err, arg);
	}
      c->regex = xstrdup (arg);
    }

  c->is_load = is_load;
  init_catchpoint (&c->base, gdbarch, is_temp, NULL,
		   &catch_solib_breakpoint_ops);

  c->base.enable_state = enabled ? bp_enabled : bp_disabled;

  discard_cleanups (cleanup);
  install_breakpoint (0, &c->base, 1);
}

/* A helper function that does all the work for "catch load" and
   "catch unload".  */

static void
catch_load_or_unload (char *arg, int from_tty, int is_load,
		      struct cmd_list_element *command)
{
  int tempflag;
  const int enabled = 1;

  tempflag = get_cmd_context (command) == CATCH_TEMPORARY;

  add_solib_catchpoint (arg, is_load, tempflag, enabled);
}

static void
catch_load_command_1 (char *arg, int from_tty,
		      struct cmd_list_element *command)
{
  catch_load_or_unload (arg, from_tty, 1, command);
}

static void
catch_unload_command_1 (char *arg, int from_tty,
			struct cmd_list_element *command)
{
  catch_load_or_unload (arg, from_tty, 0, command);
}

/* Initialize a new breakpoint of the bp_catchpoint kind.  If TEMPFLAG
   is non-zero, then make the breakpoint temporary.  If COND_STRING is
   not NULL, then store it in the breakpoint.  OPS, if not NULL, is
   the breakpoint_ops structure associated to the catchpoint.  */

void
init_catchpoint (struct breakpoint *b,
		 struct gdbarch *gdbarch, int tempflag,
		 char *cond_string,
		 const struct breakpoint_ops *ops)
{
  struct symtab_and_line sal;

  init_sal (&sal);
  sal.pspace = current_program_space;

  init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops);

  b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string);
  b->disposition = tempflag ? disp_del : disp_donttouch;
}

void
install_breakpoint (int internal, struct breakpoint *b, int update_gll)
{
  add_to_breakpoint_chain (b);
  set_breakpoint_number (internal, b);
  if (is_tracepoint (b))
    set_tracepoint_count (breakpoint_count);
  if (!internal)
    mention (b);
  observer_notify_breakpoint_created (b);

  if (update_gll)
    update_global_location_list (UGLL_MAY_INSERT);
}

static void
create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch,
				    int tempflag, char *cond_string,
                                    const struct breakpoint_ops *ops)
{
  struct fork_catchpoint *c = new fork_catchpoint ();

  init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops);

  c->forked_inferior_pid = null_ptid;

  install_breakpoint (0, &c->base, 1);
}

/* Exec catchpoints.  */

/* An instance of this type is used to represent an exec catchpoint.
   It includes a "struct breakpoint" as a kind of base class; users
   downcast to "struct breakpoint *" when needed.  A breakpoint is
   really of this type iff its ops pointer points to
   CATCH_EXEC_BREAKPOINT_OPS.  */

struct exec_catchpoint
{
  /* The base class.  */
  struct breakpoint base;

  /* Filename of a program whose exec triggered this catchpoint.
     This field is only valid immediately after this catchpoint has
     triggered.  */
  char *exec_pathname;
};

/* Implement the "dtor" breakpoint_ops method for exec
   catchpoints.  */

static void
dtor_catch_exec (struct breakpoint *b)
{
  struct exec_catchpoint *c = (struct exec_catchpoint *) b;

  xfree (c->exec_pathname);

  base_breakpoint_ops.dtor (b);
}

static int
insert_catch_exec (struct bp_location *bl)
{
  return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid));
}

static int
remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason)
{
  return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid));
}

static int
breakpoint_hit_catch_exec (const struct bp_location *bl,
			   struct address_space *aspace, CORE_ADDR bp_addr,
			   const struct target_waitstatus *ws)
{
  struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner;

  if (ws->kind != TARGET_WAITKIND_EXECD)
    return 0;

  c->exec_pathname = xstrdup (ws->value.execd_pathname);
  return 1;
}

static enum print_stop_action
print_it_catch_exec (bpstat bs)
{
  struct ui_out *uiout = current_uiout;
  struct breakpoint *b = bs->breakpoint_at;
  struct exec_catchpoint *c = (struct exec_catchpoint *) b;

  annotate_catchpoint (b->number);
  maybe_print_thread_hit_breakpoint (uiout);
  if (b->disposition == disp_del)
    ui_out_text (uiout, "Temporary catchpoint ");
  else
    ui_out_text (uiout, "Catchpoint ");
  if (ui_out_is_mi_like_p (uiout))
    {
      ui_out_field_string (uiout, "reason",
			   async_reason_lookup (EXEC_ASYNC_EXEC));
      ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
    }
  ui_out_field_int (uiout, "bkptno", b->number);
  ui_out_text (uiout, " (exec'd ");
  ui_out_field_string (uiout, "new-exec", c->exec_pathname);
  ui_out_text (uiout, "), ");

  return PRINT_SRC_AND_LOC;
}

static void
print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc)
{
  struct exec_catchpoint *c = (struct exec_catchpoint *) b;
  struct value_print_options opts;
  struct ui_out *uiout = current_uiout;

  get_user_print_options (&opts);

  /* Field 4, the address, is omitted (which makes the columns
     not line up too nicely with the headers, but the effect
     is relatively readable).  */
  if (opts.addressprint)
    ui_out_field_skip (uiout, "addr");
  annotate_field (5);
  ui_out_text (uiout, "exec");
  if (c->exec_pathname != NULL)
    {
      ui_out_text (uiout, ", program \"");
      ui_out_field_string (uiout, "what", c->exec_pathname);
      ui_out_text (uiout, "\" ");
    }

  if (ui_out_is_mi_like_p (uiout))
    ui_out_field_string (uiout, "catch-type", "exec");
}

static void
print_mention_catch_exec (struct breakpoint *b)
{
  printf_filtered (_("Catchpoint %d (exec)"), b->number);
}

/* Implement the "print_recreate" breakpoint_ops method for exec
   catchpoints.  */

static void
print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp)
{
  fprintf_unfiltered (fp, "catch exec");
  print_recreate_thread (b, fp);
}

static struct breakpoint_ops catch_exec_breakpoint_ops;

static int
hw_breakpoint_used_count (void)
{
  int i = 0;
  struct breakpoint *b;
  struct bp_location *bl;

  ALL_BREAKPOINTS (b)
  {
    if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b))
      for (bl = b->loc; bl; bl = bl->next)
	{
	  /* Special types of hardware breakpoints may use more than
	     one register.  */
	  i += b->ops->resources_needed (bl);
	}
  }

  return i;
}

/* Returns the resources B would use if it were a hardware
   watchpoint.  */

static int
hw_watchpoint_use_count (struct breakpoint *b)
{
  int i = 0;
  struct bp_location *bl;

  if (!breakpoint_enabled (b))
    return 0;

  for (bl = b->loc; bl; bl = bl->next)
    {
      /* Special types of hardware watchpoints may use more than
	 one register.  */
      i += b->ops->resources_needed (bl);
    }

  return i;
}

/* Returns the sum the used resources of all hardware watchpoints of
   type TYPE in the breakpoints list.  Also returns in OTHER_TYPE_USED
   the sum of the used resources of all hardware watchpoints of other
   types _not_ TYPE.  */

static int
hw_watchpoint_used_count_others (struct breakpoint *except,
				 enum bptype type, int *other_type_used)
{
  int i = 0;
  struct breakpoint *b;

  *other_type_used = 0;
  ALL_BREAKPOINTS (b)
    {
      if (b == except)
	continue;
      if (!breakpoint_enabled (b))
	continue;

      if (b->type == type)
	i += hw_watchpoint_use_count (b);
      else if (is_hardware_watchpoint (b))
	*other_type_used = 1;
    }

  return i;
}

void
disable_watchpoints_before_interactive_call_start (void)
{
  struct breakpoint *b;

  ALL_BREAKPOINTS (b)
  {
    if (is_watchpoint (b) && breakpoint_enabled (b))
      {
	b->enable_state = bp_call_disabled;
	update_global_location_list (UGLL_DONT_INSERT);
      }
  }
}

void
enable_watchpoints_after_interactive_call_stop (void)
{
  struct breakpoint *b;

  ALL_BREAKPOINTS (b)
  {
    if (is_watchpoint (b) && b->enable_state == bp_call_disabled)
      {
	b->enable_state = bp_enabled;
	update_global_location_list (UGLL_MAY_INSERT);
      }
  }
}

void
disable_breakpoints_before_startup (void)
{
  current_program_space->executing_startup = 1;
  update_global_location_list (UGLL_DONT_INSERT);
}

void
enable_breakpoints_after_startup (void)
{
  current_program_space->executing_startup = 0;
  breakpoint_re_set ();
}

/* Create a new single-step breakpoint for thread THREAD, with no
   locations.  */

static struct breakpoint *
new_single_step_breakpoint (int thread, struct gdbarch *gdbarch)
{
  struct breakpoint *b = new breakpoint ();

  init_raw_breakpoint_without_location (b, gdbarch, bp_single_step,
					&momentary_breakpoint_ops);

  b->disposition = disp_donttouch;
  b->frame_id = null_frame_id;

  b->thread = thread;
  gdb_assert (b->thread != 0);

  add_to_breakpoint_chain (b);

  return b;
}

/* Set a momentary breakpoint of type TYPE at address specified by
   SAL.  If FRAME_ID is valid, the breakpoint is restricted to that
   frame.  */

struct breakpoint *
set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal,
			  struct frame_id frame_id, enum bptype type)
{
  struct breakpoint *b;

  /* If FRAME_ID is valid, it should be a real frame, not an inlined or
     tail-called one.  */
  gdb_assert (!frame_id_artificial_p (frame_id));

  b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops);
  b->enable_state = bp_enabled;
  b->disposition = disp_donttouch;
  b->frame_id = frame_id;

  /* If we're debugging a multi-threaded program, then we want
     momentary breakpoints to be active in only a single thread of
     control.  */
  if (in_thread_list (inferior_ptid))
    b->thread = ptid_to_global_thread_id (inferior_ptid);

  update_global_location_list_nothrow (UGLL_MAY_INSERT);

  return b;
}

/* Make a momentary breakpoint based on the master breakpoint ORIG.
   The new breakpoint will have type TYPE, use OPS as its
   breakpoint_ops, and will set enabled to LOC_ENABLED.  */

static struct breakpoint *
momentary_breakpoint_from_master (struct breakpoint *orig,
				  enum bptype type,
				  const struct breakpoint_ops *ops,
				  int loc_enabled)
{
  struct breakpoint *copy;

  copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops);
  copy->loc = allocate_bp_location (copy);
  set_breakpoint_location_function (copy->loc, 1);

  copy->loc->gdbarch = orig->loc->gdbarch;
  copy->loc->requested_address = orig->loc->requested_address;
  copy->loc->address = orig->loc->address;
  copy->loc->section = orig->loc->section;
  copy->loc->pspace = orig->loc->pspace;
  copy->loc->probe = orig->loc->probe;
  copy->loc->line_number = orig->loc->line_number;
  copy->loc->symtab = orig->loc->symtab;
  copy->loc->enabled = loc_enabled;
  copy->frame_id = orig->frame_id;
  copy->thread = orig->thread;
  copy->pspace = orig->pspace;

  copy->enable_state = bp_enabled;
  copy->disposition = disp_donttouch;
  copy->number = internal_breakpoint_number--;

  update_global_location_list_nothrow (UGLL_DONT_INSERT);
  return copy;
}

/* Make a deep copy of momentary breakpoint ORIG.  Returns NULL if
   ORIG is NULL.  */

struct breakpoint *
clone_momentary_breakpoint (struct breakpoint *orig)
{
  /* If there's nothing to clone, then return nothing.  */
  if (orig == NULL)
    return NULL;

  return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0);
}

struct breakpoint *
set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc,
				enum bptype type)
{
  struct symtab_and_line sal;

  sal = find_pc_line (pc, 0);
  sal.pc = pc;
  sal.section = find_pc_overlay (pc);
  sal.explicit_pc = 1;

  return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type);
}


/* Tell the user we have just set a breakpoint B.  */

static void
mention (struct breakpoint *b)
{
  b->ops->print_mention (b);
  if (ui_out_is_mi_like_p (current_uiout))
    return;
  printf_filtered ("\n");
}


static int bp_loc_is_permanent (struct bp_location *loc);

static struct bp_location *
add_location_to_breakpoint (struct breakpoint *b,
			    const struct symtab_and_line *sal)
{
  struct bp_location *loc, **tmp;
  CORE_ADDR adjusted_address;
  struct gdbarch *loc_gdbarch = get_sal_arch (*sal);

  if (loc_gdbarch == NULL)
    loc_gdbarch = b->gdbarch;

  /* Adjust the breakpoint's address prior to allocating a location.
     Once we call allocate_bp_location(), that mostly uninitialized
     location will be placed on the location chain.  Adjustment of the
     breakpoint may cause target_read_memory() to be called and we do
     not want its scan of the location chain to find a breakpoint and
     location that's only been partially initialized.  */
  adjusted_address = adjust_breakpoint_address (loc_gdbarch,
						sal->pc, b->type);

  /* Sort the locations by their ADDRESS.  */
  loc = allocate_bp_location (b);
  for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address;
       tmp = &((*tmp)->next))
    ;
  loc->next = *tmp;
  *tmp = loc;

  loc->requested_address = sal->pc;
  loc->address = adjusted_address;
  loc->pspace = sal->pspace;
  loc->probe.probe = sal->probe;
  loc->probe.objfile = sal->objfile;
  gdb_assert (loc->pspace != NULL);
  loc->section = sal->section;
  loc->gdbarch = loc_gdbarch;
  loc->line_number = sal->line;
  loc->symtab = sal->symtab;

  set_breakpoint_location_function (loc,
				    sal->explicit_pc || sal->explicit_line);

  /* While by definition, permanent breakpoints are already present in the
     code, we don't mark the location as inserted.  Normally one would expect
     that GDB could rely on that breakpoint instruction to stop the program,
     thus removing the need to insert its own breakpoint, except that executing
     the breakpoint instruction can kill the target instead of reporting a
     SIGTRAP.  E.g., on SPARC, when interrupts are disabled, executing the
     instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies
     with "Trap 0x02 while interrupts disabled, Error state".  Letting the
     breakpoint be inserted normally results in QEMU knowing about the GDB
     breakpoint, and thus trap before the breakpoint instruction is executed.
     (If GDB later needs to continue execution past the permanent breakpoint,
     it manually increments the PC, thus avoiding executing the breakpoint
     instruction.)  */
  if (bp_loc_is_permanent (loc))
    loc->permanent = 1;

  return loc;
}


/* See breakpoint.h.  */

int
program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address)
{
  int len;
  CORE_ADDR addr;
  const gdb_byte *bpoint;
  gdb_byte *target_mem;
  struct cleanup *cleanup;
  int retval = 0;

  addr = address;
  bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len);

  /* Software breakpoints unsupported?  */
  if (bpoint == NULL)
    return 0;

  target_mem = (gdb_byte *) alloca (len);

  /* Enable the automatic memory restoration from breakpoints while
     we read the memory.  Otherwise we could say about our temporary
     breakpoints they are permanent.  */
  cleanup = make_show_memory_breakpoints_cleanup (0);

  if (target_read_memory (address, target_mem, len) == 0
      && memcmp (target_mem, bpoint, len) == 0)
    retval = 1;

  do_cleanups (cleanup);

  return retval;
}

/* Return 1 if LOC is pointing to a permanent breakpoint,
   return 0 otherwise.  */

static int
bp_loc_is_permanent (struct bp_location *loc)
{
  struct cleanup *cleanup;
  int retval;

  gdb_assert (loc != NULL);

  /* If we have a catchpoint or a watchpoint, just return 0.  We should not
     attempt to read from the addresses the locations of these breakpoint types
     point to.  program_breakpoint_here_p, below, will attempt to read
     memory.  */
  if (!breakpoint_address_is_meaningful (loc->owner))
    return 0;

  cleanup = save_current_space_and_thread ();
  switch_to_program_space_and_thread (loc->pspace);

  retval = program_breakpoint_here_p (loc->gdbarch, loc->address);

  do_cleanups (cleanup);

  return retval;
}

/* Build a command list for the dprintf corresponding to the current
   settings of the dprintf style options.  */

static void
update_dprintf_command_list (struct breakpoint *b)
{
  char *dprintf_args = b->extra_string;
  char *printf_line = NULL;

  if (!dprintf_args)
    return;

  dprintf_args = skip_spaces (dprintf_args);

  /* Allow a comma, as it may have terminated a location, but don't
     insist on it.  */
  if (*dprintf_args == ',')
    ++dprintf_args;
  dprintf_args = skip_spaces (dprintf_args);

  if (*dprintf_args != '"')
    error (_("Bad format string, missing '\"'."));

  if (strcmp (dprintf_style, dprintf_style_gdb) == 0)
    printf_line = xstrprintf ("printf %s", dprintf_args);
  else if (strcmp (dprintf_style, dprintf_style_call) == 0)
    {
      if (!dprintf_function)
	error (_("No function supplied for dprintf call"));

      if (dprintf_channel && strlen (dprintf_channel) > 0)
	printf_line = xstrprintf ("call (void) %s (%s,%s)",
				  dprintf_function,
				  dprintf_channel,
				  dprintf_args);
      else
	printf_line = xstrprintf ("call (void) %s (%s)",
				  dprintf_function,
				  dprintf_args);
    }
  else if (strcmp (dprintf_style, dprintf_style_agent) == 0)
    {
      if (target_can_run_breakpoint_commands ())
	printf_line = xstrprintf ("agent-printf %s", dprintf_args);
      else
	{
	  warning (_("Target cannot run dprintf commands, falling back to GDB printf"));
	  printf_line = xstrprintf ("printf %s", dprintf_args);
	}
    }
  else
    internal_error (__FILE__, __LINE__,
		    _("Invalid dprintf style."));

  gdb_assert (printf_line != NULL);
  /* Manufacture a printf sequence.  */
  {
    struct command_line *printf_cmd_line = XNEW (struct command_line);

    printf_cmd_line->control_type = simple_control;
    printf_cmd_line->body_count = 0;
    printf_cmd_line->body_list = NULL;
    printf_cmd_line->next = NULL;
    printf_cmd_line->line = printf_line;

    breakpoint_set_commands (b, printf_cmd_line);
  }
}

/* Update all dprintf commands, making their command lists reflect
   current style settings.  */

static void
update_dprintf_commands (char *args, int from_tty,
			 struct cmd_list_element *c)
{
  struct breakpoint *b;

  ALL_BREAKPOINTS (b)
    {
      if (b->type == bp_dprintf)
	update_dprintf_command_list (b);
    }
}

/* Create a breakpoint with SAL as location.  Use LOCATION
   as a description of the location, and COND_STRING
   as condition expression.  If LOCATION is NULL then create an
   "address location" from the address in the SAL.  */

static void
init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch,
		     struct symtabs_and_lines sals,
		     struct event_location *location,
		     char *filter, char *cond_string,
		     char *extra_string,
		     enum bptype type, enum bpdisp disposition,
		     int thread, int task, int ignore_count,
		     const struct breakpoint_ops *ops, int from_tty,
		     int enabled, int internal, unsigned flags,
		     int display_canonical)
{
  int i;

  if (type == bp_hardware_breakpoint)
    {
      int target_resources_ok;

      i = hw_breakpoint_used_count ();
      target_resources_ok =
	target_can_use_hardware_watchpoint (bp_hardware_breakpoint,
					    i + 1, 0);
      if (target_resources_ok == 0)
	error (_("No hardware breakpoint support in the target."));
      else if (target_resources_ok < 0)
	error (_("Hardware breakpoints used exceeds limit."));
    }

  gdb_assert (sals.nelts > 0);

  for (i = 0; i < sals.nelts; ++i)
    {
      struct symtab_and_line sal = sals.sals[i];
      struct bp_location *loc;

      if (from_tty)
	{
	  struct gdbarch *loc_gdbarch = get_sal_arch (sal);
	  if (!loc_gdbarch)
	    loc_gdbarch = gdbarch;

	  describe_other_breakpoints (loc_gdbarch,
				      sal.pspace, sal.pc, sal.section, thread);
	}

      if (i == 0)
	{
	  init_raw_breakpoint (b, gdbarch, sal, type, ops);
	  b->thread = thread;
	  b->task = task;

	  b->cond_string = cond_string;
	  b->extra_string = extra_string;
	  b->ignore_count = ignore_count;
	  b->enable_state = enabled ? bp_enabled : bp_disabled;
	  b->disposition = disposition;

	  if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0)
	    b->loc->inserted = 1;

	  if (type == bp_static_tracepoint)
	    {
	      struct tracepoint *t = (struct tracepoint *) b;
	      struct static_tracepoint_marker marker;

	      if (strace_marker_p (b))
		{
		  /* We already know the marker exists, otherwise, we
		     wouldn't see a sal for it.  */
		  const char *p = &event_location_to_string (b->location)[3];
		  const char *endp;
		  char *marker_str;

		  p = skip_spaces_const (p);

		  endp = skip_to_space_const (p);

		  marker_str = savestring (p, endp - p);
		  t->static_trace_marker_id = marker_str;

		  printf_filtered (_("Probed static tracepoint "
				     "marker \"%s\"\n"),
				   t->static_trace_marker_id);
		}
	      else if (target_static_tracepoint_marker_at (sal.pc, &marker))
		{
		  t->static_trace_marker_id = xstrdup (marker.str_id);
		  release_static_tracepoint_marker (&marker);

		  printf_filtered (_("Probed static tracepoint "
				     "marker \"%s\"\n"),
				   t->static_trace_marker_id);
		}
	      else
		warning (_("Couldn't determine the static "
			   "tracepoint marker to probe"));
	    }

	  loc = b->loc;
	}
      else
	{
	  loc = add_location_to_breakpoint (b, &sal);
	  if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0)
	    loc->inserted = 1;
	}

      if (b->cond_string)
	{
	  const char *arg = b->cond_string;

	  loc->cond = parse_exp_1 (&arg, loc->address,
				   block_for_pc (loc->address), 0);
	  if (*arg)
              error (_("Garbage '%s' follows condition"), arg);
	}

      /* Dynamic printf requires and uses additional arguments on the
	 command line, otherwise it's an error.  */
      if (type == bp_dprintf)
	{
	  if (b->extra_string)
	    update_dprintf_command_list (b);
	  else
	    error (_("Format string required"));
	}
      else if (b->extra_string)
	error (_("Garbage '%s' at end of command"), b->extra_string);
    }

  b->display_canonical = display_canonical;
  if (location != NULL)
    b->location = location;
  else
    {
      const char *addr_string = NULL;
      int addr_string_len = 0;

      if (location != NULL)
	addr_string = event_location_to_string (location);
      if (addr_string != NULL)
	addr_string_len = strlen (addr_string);

      b->location = new_address_location (b->loc->address,
					  addr_string, addr_string_len);
    }
  b->filter = filter;
}

static void
create_breakpoint_sal (struct gdbarch *gdbarch,
		       struct symtabs_and_lines sals,
		       struct event_location *location,
		       char *filter, char *cond_string,
		       char *extra_string,
		       enum bptype type, enum bpdisp disposition,
		       int thread, int task, int ignore_count,
		       const struct breakpoint_ops *ops, int from_tty,
		       int enabled, int internal, unsigned flags,
		       int display_canonical)
{
  struct breakpoint *b;
  struct cleanup *old_chain;

  if (is_tracepoint_type (type))
    {
      struct tracepoint *t;

      t = new tracepoint ();
      b = &t->base;
    }
  else
    b = new breakpoint ();

  old_chain = make_cleanup (xfree, b);

  init_breakpoint_sal (b, gdbarch,
		       sals, location,
		       filter, cond_string, extra_string,
		       type, disposition,
		       thread, task, ignore_count,
		       ops, from_tty,
		       enabled, internal, flags,
		       display_canonical);
  discard_cleanups (old_chain);

  install_breakpoint (internal, b, 0);
}

/* Add SALS.nelts breakpoints to the breakpoint table.  For each
   SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i]
   value.  COND_STRING, if not NULL, specified the condition to be
   used for all breakpoints.  Essentially the only case where
   SALS.nelts is not 1 is when we set a breakpoint on an overloaded
   function.  In that case, it's still not possible to specify
   separate conditions for different overloaded functions, so
   we take just a single condition string.
   
   NOTE: If the function succeeds, the caller is expected to cleanup
   the arrays ADDR_STRING, COND_STRING, and SALS (but not the
   array contents).  If the function fails (error() is called), the
   caller is expected to cleanups both the ADDR_STRING, COND_STRING,
   COND and SALS arrays and each of those arrays contents.  */

static void
create_breakpoints_sal (struct gdbarch *gdbarch,
			struct linespec_result *canonical,
			char *cond_string, char *extra_string,
			enum bptype type, enum bpdisp disposition,
			int thread, int task, int ignore_count,
			const struct breakpoint_ops *ops, int from_tty,
			int enabled, int internal, unsigned flags)
{
  int i;
  struct linespec_sals *lsal;

  if (canonical->pre_expanded)
    gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1);

  for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i)
    {
      /* Note that 'location' can be NULL in the case of a plain
	 'break', without arguments.  */
      struct event_location *location
	= (canonical->location != NULL
	   ? copy_event_location (canonical->location) : NULL);
      char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL;
      struct cleanup *inner = make_cleanup_delete_event_location (location);

      make_cleanup (xfree, filter_string);
      create_breakpoint_sal (gdbarch, lsal->sals,
			     location,
			     filter_string,
			     cond_string, extra_string,
			     type, disposition,
			     thread, task, ignore_count, ops,
			     from_tty, enabled, internal, flags,
			     canonical->special_display);
      discard_cleanups (inner);
    }
}

/* Parse LOCATION which is assumed to be a SAL specification possibly
   followed by conditionals.  On return, SALS contains an array of SAL
   addresses found.  LOCATION points to the end of the SAL (for
   linespec locations).

   The array and the line spec strings are allocated on the heap, it is
   the caller's responsibility to free them.  */

static void
parse_breakpoint_sals (const struct event_location *location,
		       struct linespec_result *canonical)
{
  struct symtab_and_line cursal;

  if (event_location_type (location) == LINESPEC_LOCATION)
    {
      const char *address = get_linespec_location (location);

      if (address == NULL)
	{
	  /* The last displayed codepoint, if it's valid, is our default
	     breakpoint address.  */
	  if (last_displayed_sal_is_valid ())
	    {
	      struct linespec_sals lsal;
	      struct symtab_and_line sal;
	      CORE_ADDR pc;

	      init_sal (&sal);		/* Initialize to zeroes.  */
	      lsal.sals.sals = XNEW (struct symtab_and_line);

	      /* Set sal's pspace, pc, symtab, and line to the values
		 corresponding to the last call to print_frame_info.
		 Be sure to reinitialize LINE with NOTCURRENT == 0
		 as the breakpoint line number is inappropriate otherwise.
		 find_pc_line would adjust PC, re-set it back.  */
	      get_last_displayed_sal (&sal);
	      pc = sal.pc;
	      sal = find_pc_line (pc, 0);

	      /* "break" without arguments is equivalent to "break *PC"
		 where PC is the last displayed codepoint's address.  So
		 make sure to set sal.explicit_pc to prevent GDB from
		 trying to expand the list of sals to include all other
		 instances with the same symtab and line.  */
	      sal.pc = pc;
	      sal.explicit_pc = 1;

	      lsal.sals.sals[0] = sal;
	      lsal.sals.nelts = 1;
	      lsal.canonical = NULL;

	      VEC_safe_push (linespec_sals, canonical->sals, &lsal);
	      return;
	    }
	  else
	    error (_("No default breakpoint address now."));
	}
    }

  /* Force almost all breakpoints to be in terms of the
     current_source_symtab (which is decode_line_1's default).
     This should produce the results we want almost all of the
     time while leaving default_breakpoint_* alone.

     ObjC: However, don't match an Objective-C method name which
     may have a '+' or '-' succeeded by a '['.  */
  cursal = get_current_source_symtab_and_line ();
  if (last_displayed_sal_is_valid ())
    {
      const char *address = NULL;

      if (event_location_type (location) == LINESPEC_LOCATION)
	address = get_linespec_location (location);

      if (!cursal.symtab
	  || (address != NULL
	      && strchr ("+-", address[0]) != NULL
	      && address[1] != '['))
	{
	  decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL,
			    get_last_displayed_symtab (),
			    get_last_displayed_line (),
			    canonical, NULL, NULL);
	  return;
	}
    }

  decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL,
		    cursal.symtab, cursal.line, canonical, NULL, NULL);
}


/* Convert each SAL into a real PC.  Verify that the PC can be
   inserted as a breakpoint.  If it can't throw an error.  */

static void
breakpoint_sals_to_pc (struct symtabs_and_lines *sals)
{    
  int i;

  for (i = 0; i < sals->nelts; i++)
    resolve_sal_pc (&sals->sals[i]);
}

/* Fast tracepoints may have restrictions on valid locations.  For
   instance, a fast tracepoint using a jump instead of a trap will
   likely have to overwrite more bytes than a trap would, and so can
   only be placed where the instruction is longer than the jump, or a
   multi-instruction sequence does not have a jump into the middle of
   it, etc.  */

static void
check_fast_tracepoint_sals (struct gdbarch *gdbarch,
			    struct symtabs_and_lines *sals)
{
  int i, rslt;
  struct symtab_and_line *sal;
  char *msg;
  struct cleanup *old_chain;

  for (i = 0; i < sals->nelts; i++)
    {
      struct gdbarch *sarch;

      sal = &sals->sals[i];

      sarch = get_sal_arch (*sal);
      /* We fall back to GDBARCH if there is no architecture
	 associated with SAL.  */
      if (sarch == NULL)
	sarch = gdbarch;
      rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, &msg);
      old_chain = make_cleanup (xfree, msg);

      if (!rslt)
	error (_("May not have a fast tracepoint at %s%s"),
	       paddress (sarch, sal->pc), (msg ? msg : ""));

      do_cleanups (old_chain);
    }
}

/* Given TOK, a string specification of condition and thread, as
   accepted by the 'break' command, extract the condition
   string and thread number and set *COND_STRING and *THREAD.
   PC identifies the context at which the condition should be parsed.
   If no condition is found, *COND_STRING is set to NULL.
   If no thread is found, *THREAD is set to -1.  */

static void
find_condition_and_thread (const char *tok, CORE_ADDR pc,
			   char **cond_string, int *thread, int *task,
			   char **rest)
{
  *cond_string = NULL;
  *thread = -1;
  *task = 0;
  *rest = NULL;

  while (tok && *tok)
    {
      const char *end_tok;
      int toklen;
      const char *cond_start = NULL;
      const char *cond_end = NULL;

      tok = skip_spaces_const (tok);

      if ((*tok == '"' || *tok == ',') && rest)
	{
	  *rest = savestring (tok, strlen (tok));
	  return;
	}

      end_tok = skip_to_space_const (tok);

      toklen = end_tok - tok;

      if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
	{
	  tok = cond_start = end_tok + 1;
	  parse_exp_1 (&tok, pc, block_for_pc (pc), 0);
	  cond_end = tok;
	  *cond_string = savestring (cond_start, cond_end - cond_start);
	}
      else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0)
	{
	  const char *tmptok;
	  struct thread_info *thr;

	  tok = end_tok + 1;
	  thr = parse_thread_id (tok, &tmptok);
	  if (tok == tmptok)
	    error (_("Junk after thread keyword."));
	  *thread = thr->global_num;
	  tok = tmptok;
	}
      else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0)
	{
	  char *tmptok;

	  tok = end_tok + 1;
	  *task = strtol (tok, &tmptok, 0);
	  if (tok == tmptok)
	    error (_("Junk after task keyword."));
	  if (!valid_task_id (*task))
	    error (_("Unknown task %d."), *task);
	  tok = tmptok;
	}
      else if (rest)
	{
	  *rest = savestring (tok, strlen (tok));
	  return;
	}
      else
	error (_("Junk at end of arguments."));
    }
}

/* Decode a static tracepoint marker spec.  */

static struct symtabs_and_lines
decode_static_tracepoint_spec (const char **arg_p)
{
  VEC(static_tracepoint_marker_p) *markers = NULL;
  struct symtabs_and_lines sals;
  struct cleanup *old_chain;
  const char *p = &(*arg_p)[3];
  const char *endp;
  char *marker_str;
  int i;

  p = skip_spaces_const (p);

  endp = skip_to_space_const (p);

  marker_str = savestring (p, endp - p);
  old_chain = make_cleanup (xfree, marker_str);

  markers = target_static_tracepoint_markers_by_strid (marker_str);
  if (VEC_empty(static_tracepoint_marker_p, markers))
    error (_("No known static tracepoint marker named %s"), marker_str);

  sals.nelts = VEC_length(static_tracepoint_marker_p, markers);
  sals.sals = XNEWVEC (struct symtab_and_line, sals.nelts);

  for (i = 0; i < sals.nelts; i++)
    {
      struct static_tracepoint_marker *marker;

      marker = VEC_index (static_tracepoint_marker_p, markers, i);

      init_sal (&sals.sals[i]);

      sals.sals[i] = find_pc_line (marker->address, 0);
      sals.sals[i].pc = marker->address;

      release_static_tracepoint_marker (marker);
    }

  do_cleanups (old_chain);

  *arg_p = endp;
  return sals;
}

/* See breakpoint.h.  */

int
create_breakpoint (struct gdbarch *gdbarch,
		   const struct event_location *location, char *cond_string,
		   int thread, char *extra_string,
		   int parse_extra,
		   int tempflag, enum bptype type_wanted,
		   int ignore_count,
		   enum auto_boolean pending_break_support,
		   const struct breakpoint_ops *ops,
		   int from_tty, int enabled, int internal,
		   unsigned flags)
{
  struct linespec_result canonical;
  struct cleanup *old_chain;
  struct cleanup *bkpt_chain = NULL;
  int pending = 0;
  int task = 0;
  int prev_bkpt_count = breakpoint_count;

  gdb_assert (ops != NULL);

  /* If extra_string isn't useful, set it to NULL.  */
  if (extra_string != NULL && *extra_string == '\0')
    extra_string = NULL;

  init_linespec_result (&canonical);

  TRY
    {
      ops->create_sals_from_location (location, &canonical, type_wanted);
    }
  CATCH (e, RETURN_MASK_ERROR)
    {
      /* If caller is interested in rc value from parse, set
	 value.  */
      if (e.error == NOT_FOUND_ERROR)
	{
	  /* If pending breakpoint support is turned off, throw
	     error.  */

	  if (pending_break_support == AUTO_BOOLEAN_FALSE)
	    throw_exception (e);

	  exception_print (gdb_stderr, e);

          /* If pending breakpoint support is auto query and the user
	     selects no, then simply return the error code.  */
	  if (pending_break_support == AUTO_BOOLEAN_AUTO
	      && !nquery (_("Make %s pending on future shared library load? "),
			  bptype_string (type_wanted)))
	    return 0;

	  /* At this point, either the user was queried about setting
	     a pending breakpoint and selected yes, or pending
	     breakpoint behavior is on and thus a pending breakpoint
	     is defaulted on behalf of the user.  */
	  pending = 1;
	}
      else
	throw_exception (e);
    }
  END_CATCH

  if (!pending && VEC_empty (linespec_sals, canonical.sals))
    return 0;

  /* Create a chain of things that always need to be cleaned up.  */
  old_chain = make_cleanup_destroy_linespec_result (&canonical);

  /* ----------------------------- SNIP -----------------------------
     Anything added to the cleanup chain beyond this point is assumed
     to be part of a breakpoint.  If the breakpoint create succeeds
     then the memory is not reclaimed.  */
  bkpt_chain = make_cleanup (null_cleanup, 0);

  /* Resolve all line numbers to PC's and verify that the addresses
     are ok for the target.  */
  if (!pending)
    {
      int ix;
      struct linespec_sals *iter;

      for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix)
	breakpoint_sals_to_pc (&iter->sals);
    }

  /* Fast tracepoints may have additional restrictions on location.  */
  if (!pending && type_wanted == bp_fast_tracepoint)
    {
      int ix;
      struct linespec_sals *iter;

      for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix)
	check_fast_tracepoint_sals (gdbarch, &iter->sals);
    }

  /* Verify that condition can be parsed, before setting any
     breakpoints.  Allocate a separate condition expression for each
     breakpoint.  */
  if (!pending)
    {
      if (parse_extra)
        {
	  char *rest;
	  struct linespec_sals *lsal;

	  lsal = VEC_index (linespec_sals, canonical.sals, 0);

	  /* Here we only parse 'arg' to separate condition
	     from thread number, so parsing in context of first
	     sal is OK.  When setting the breakpoint we'll
	     re-parse it in context of each sal.  */

	  find_condition_and_thread (extra_string, lsal->sals.sals[0].pc,
				     &cond_string, &thread, &task, &rest);
	  if (cond_string)
	    make_cleanup (xfree, cond_string);
	  if (rest)
	    make_cleanup (xfree, rest);
	  if (rest)
	    extra_string = rest;
	  else
	    extra_string = NULL;
        }
      else
        {
	  if (type_wanted != bp_dprintf
	      && extra_string != NULL && *extra_string != '\0')
		error (_("Garbage '%s' at end of location"), extra_string);

	  /* Create a private copy of condition string.  */
	  if (cond_string)
	    {
	      cond_string = xstrdup (cond_string);
	      make_cleanup (xfree, cond_string);
	    }
	  /* Create a private copy of any extra string.  */
	  if (extra_string)
	    {
	      extra_string = xstrdup (extra_string);
	      make_cleanup (xfree, extra_string);
	    }
        }

      ops->create_breakpoints_sal (gdbarch, &canonical,
				   cond_string, extra_string, type_wanted,
				   tempflag ? disp_del : disp_donttouch,
				   thread, task, ignore_count, ops,
				   from_tty, enabled, internal, flags);
    }
  else
    {
      struct breakpoint *b;

      if (is_tracepoint_type (type_wanted))
	{
	  struct tracepoint *t;

	  t = new tracepoint ();
	  b = &t->base;
	}
      else
	b = new breakpoint ();

      init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops);
      b->location = copy_event_location (location);

      if (parse_extra)
	b->cond_string = NULL;
      else
	{
	  /* Create a private copy of condition string.  */
	  if (cond_string)
	    {
	      cond_string = xstrdup (cond_string);
	      make_cleanup (xfree, cond_string);
	    }
	  b->cond_string = cond_string;
	  b->thread = thread;
	}

      /* Create a private copy of any extra string.  */
      if (extra_string != NULL)
	{
	  extra_string = xstrdup (extra_string);
	  make_cleanup (xfree, extra_string);
	}
      b->extra_string = extra_string;
      b->ignore_count = ignore_count;
      b->disposition = tempflag ? disp_del : disp_donttouch;
      b->condition_not_parsed = 1;
      b->enable_state = enabled ? bp_enabled : bp_disabled;
      if ((type_wanted != bp_breakpoint
           && type_wanted != bp_hardware_breakpoint) || thread != -1)
	b->pspace = current_program_space;

      install_breakpoint (internal, b, 0);
    }
  
  if (VEC_length (linespec_sals, canonical.sals) > 1)
    {
      warning (_("Multiple breakpoints were set.\nUse the "
		 "\"delete\" command to delete unwanted breakpoints."));
      prev_breakpoint_count = prev_bkpt_count;
    }

  /* That's it.  Discard the cleanups for data inserted into the
     breakpoint.  */
  discard_cleanups (bkpt_chain);
  /* But cleanup everything else.  */
  do_cleanups (old_chain);

  /* error call may happen here - have BKPT_CHAIN already discarded.  */
  update_global_location_list (UGLL_MAY_INSERT);

  return 1;
}

/* Set a breakpoint.
   ARG is a string describing breakpoint address,
   condition, and thread.
   FLAG specifies if a breakpoint is hardware on,
   and if breakpoint is temporary, using BP_HARDWARE_FLAG
   and BP_TEMPFLAG.  */

static void
break_command_1 (char *arg, int flag, int from_tty)
{
  int tempflag = flag & BP_TEMPFLAG;
  enum bptype type_wanted = (flag & BP_HARDWAREFLAG
			     ? bp_hardware_breakpoint
			     : bp_breakpoint);
  struct breakpoint_ops *ops;
  struct event_location *location;
  struct cleanup *cleanup;

  location = string_to_event_location (&arg, current_language);
  cleanup = make_cleanup_delete_event_location (location);

  /* Matching breakpoints on probes.  */
  if (location != NULL
      && event_location_type (location) == PROBE_LOCATION)
    ops = &bkpt_probe_breakpoint_ops;
  else
    ops = &bkpt_breakpoint_ops;

  create_breakpoint (get_current_arch (),
		     location,
		     NULL, 0, arg, 1 /* parse arg */,
		     tempflag, type_wanted,
		     0 /* Ignore count */,
		     pending_break_support,
		     ops,
		     from_tty,
		     1 /* enabled */,
		     0 /* internal */,
		     0);
  do_cleanups (cleanup);
}

/* Helper function for break_command_1 and disassemble_command.  */

void
resolve_sal_pc (struct symtab_and_line *sal)
{
  CORE_ADDR pc;

  if (sal->pc == 0 && sal->symtab != NULL)
    {
      if (!find_line_pc (sal->symtab, sal->line, &pc))
	error (_("No line %d in file \"%s\"."),
	       sal->line, symtab_to_filename_for_display (sal->symtab));
      sal->pc = pc;

      /* If this SAL corresponds to a breakpoint inserted using a line
         number, then skip the function prologue if necessary.  */
      if (sal->explicit_line)
	skip_prologue_sal (sal);
    }

  if (sal->section == 0 && sal->symtab != NULL)
    {
      const struct blockvector *bv;
      const struct block *b;
      struct symbol *sym;

      bv = blockvector_for_pc_sect (sal->pc, 0, &b,
				    SYMTAB_COMPUNIT (sal->symtab));
      if (bv != NULL)
	{
	  sym = block_linkage_function (b);
	  if (sym != NULL)
	    {
	      fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab));
	      sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab),
						 sym);
	    }
	  else
	    {
	      /* It really is worthwhile to have the section, so we'll
	         just have to look harder. This case can be executed
	         if we have line numbers but no functions (as can
	         happen in assembly source).  */

	      struct bound_minimal_symbol msym;
	      struct cleanup *old_chain = save_current_space_and_thread ();

	      switch_to_program_space_and_thread (sal->pspace);

	      msym = lookup_minimal_symbol_by_pc (sal->pc);
	      if (msym.minsym)
		sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym);

	      do_cleanups (old_chain);
	    }
	}
    }
}

void
break_command (char *arg, int from_tty)
{
  break_command_1 (arg, 0, from_tty);
}

void
tbreak_command (char *arg, int from_tty)
{
  break_command_1 (arg, BP_TEMPFLAG, from_tty);
}

static void
hbreak_command (char *arg, int from_tty)
{
  break_command_1 (arg, BP_HARDWAREFLAG, from_tty);
}

static void
thbreak_command (char *arg, int from_tty)
{
  break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty);
}

static void
stop_command (char *arg, int from_tty)
{
  printf_filtered (_("Specify the type of breakpoint to set.\n\
Usage: stop in <function | address>\n\
       stop at <line>\n"));
}

static void
stopin_command (char *arg, int from_tty)
{
  int badInput = 0;

  if (arg == (char *) NULL)
    badInput = 1;
  else if (*arg != '*')
    {
      char *argptr = arg;
      int hasColon = 0;

      /* Look for a ':'.  If this is a line number specification, then
         say it is bad, otherwise, it should be an address or
         function/method name.  */
      while (*argptr && !hasColon)
	{
	  hasColon = (*argptr == ':');
	  argptr++;
	}

      if (hasColon)
	badInput = (*argptr != ':');	/* Not a class::method */
      else
	badInput = isdigit (*arg);	/* a simple line number */
    }

  if (badInput)
    printf_filtered (_("Usage: stop in <function | address>\n"));
  else
    break_command_1 (arg, 0, from_tty);
}

static void
stopat_command (char *arg, int from_tty)
{
  int badInput = 0;

  if (arg == (char *) NULL || *arg == '*')	/* no line number */
    badInput = 1;
  else
    {
      char *argptr = arg;
      int hasColon = 0;

      /* Look for a ':'.  If there is a '::' then get out, otherwise
         it is probably a line number.  */
      while (*argptr && !hasColon)
	{
	  hasColon = (*argptr == ':');
	  argptr++;
	}

      if (hasColon)
	badInput = (*argptr == ':');	/* we have class::method */
      else
	badInput = !isdigit (*arg);	/* not a line number */
    }

  if (badInput)
    printf_filtered (_("Usage: stop at <line>\n"));
  else
    break_command_1 (arg, 0, from_tty);
}

/* The dynamic printf command is mostly like a regular breakpoint, but
   with a prewired command list consisting of a single output command,
   built from extra arguments supplied on the dprintf command
   line.  */

static void
dprintf_command (char *arg, int from_tty)
{
  struct event_location *location;
  struct cleanup *cleanup;

  location = string_to_event_location (&arg, current_language);
  cleanup = make_cleanup_delete_event_location (location);

  /* If non-NULL, ARG should have been advanced past the location;
     the next character must be ','.  */
  if (arg != NULL)
    {
      if (arg[0] != ',' || arg[1] == '\0')
	error (_("Format string required"));
      else
	{
	  /* Skip the comma.  */
	  ++arg;
	}
    }

  create_breakpoint (get_current_arch (),
		     location,
		     NULL, 0, arg, 1 /* parse arg */,
		     0, bp_dprintf,
		     0 /* Ignore count */,
		     pending_break_support,
		     &dprintf_breakpoint_ops,
		     from_tty,
		     1 /* enabled */,
		     0 /* internal */,
		     0);
  do_cleanups (cleanup);
}

static void
agent_printf_command (char *arg, int from_tty)
{
  error (_("May only run agent-printf on the target"));
}

/* Implement the "breakpoint_hit" breakpoint_ops method for
   ranged breakpoints.  */

static int
breakpoint_hit_ranged_breakpoint (const struct bp_location *bl,
				  struct address_space *aspace,
				  CORE_ADDR bp_addr,
				  const struct target_waitstatus *ws)
{
  if (ws->kind != TARGET_WAITKIND_STOPPED
      || ws->value.sig != GDB_SIGNAL_TRAP)
    return 0;

  return breakpoint_address_match_range (bl->pspace->aspace, bl->address,
					 bl->length, aspace, bp_addr);
}

/* Implement the "resources_needed" breakpoint_ops method for
   ranged breakpoints.  */

static int
resources_needed_ranged_breakpoint (const struct bp_location *bl)
{
  return target_ranged_break_num_registers ();
}

/* Implement the "print_it" breakpoint_ops method for
   ranged breakpoints.  */

static enum print_stop_action
print_it_ranged_breakpoint (bpstat bs)
{
  struct breakpoint *b = bs->breakpoint_at;
  struct bp_location *bl = b->loc;
  struct ui_out *uiout = current_uiout;

  gdb_assert (b->type == bp_hardware_breakpoint);

  /* Ranged breakpoints have only one location.  */
  gdb_assert (bl && bl->next == NULL);

  annotate_breakpoint (b->number);

  maybe_print_thread_hit_breakpoint (uiout);

  if (b->disposition == disp_del)
    ui_out_text (uiout, "Temporary ranged breakpoint ");
  else
    ui_out_text (uiout, "Ranged breakpoint ");
  if (ui_out_is_mi_like_p (uiout))
    {
      ui_out_field_string (uiout, "reason",
		      async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT));
      ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
    }
  ui_out_field_int (uiout, "bkptno", b->number);
  ui_out_text (uiout, ", ");

  return PRINT_SRC_AND_LOC;
}

/* Implement the "print_one" breakpoint_ops method for
   ranged breakpoints.  */

static void
print_one_ranged_breakpoint (struct breakpoint *b,
			     struct bp_location **last_loc)
{
  struct bp_location *bl = b->loc;
  struct value_print_options opts;
  struct ui_out *uiout = current_uiout;

  /* Ranged breakpoints have only one location.  */
  gdb_assert (bl && bl->next == NULL);

  get_user_print_options (&opts);

  if (opts.addressprint)
    /* We don't print the address range here, it will be printed later
       by print_one_detail_ranged_breakpoint.  */
    ui_out_field_skip (uiout, "addr");
  annotate_field (5);
  print_breakpoint_location (b, bl);
  *last_loc = bl;
}

/* Implement the "print_one_detail" breakpoint_ops method for
   ranged breakpoints.  */

static void
print_one_detail_ranged_breakpoint (const struct breakpoint *b,
				    struct ui_out *uiout)
{
  CORE_ADDR address_start, address_end;
  struct bp_location *bl = b->loc;
  struct ui_file *stb = mem_fileopen ();
  struct cleanup *cleanup = make_cleanup_ui_file_delete (stb);

  gdb_assert (bl);

  address_start = bl->address;
  address_end = address_start + bl->length - 1;

  ui_out_text (uiout, "\taddress range: ");
  fprintf_unfiltered (stb, "[%s, %s]",
		      print_core_address (bl->gdbarch, address_start),
		      print_core_address (bl->gdbarch, address_end));
  ui_out_field_stream (uiout, "addr", stb);
  ui_out_text (uiout, "\n");

  do_cleanups (cleanup);
}

/* Implement the "print_mention" breakpoint_ops method for
   ranged breakpoints.  */

static void
print_mention_ranged_breakpoint (struct breakpoint *b)
{
  struct bp_location *bl = b->loc;
  struct ui_out *uiout = current_uiout;

  gdb_assert (bl);
  gdb_assert (b->type == bp_hardware_breakpoint);

  if (ui_out_is_mi_like_p (uiout))
    return;

  printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."),
		   b->number, paddress (bl->gdbarch, bl->address),
		   paddress (bl->gdbarch, bl->address + bl->length - 1));
}

/* Implement the "print_recreate" breakpoint_ops method for
   ranged breakpoints.  */

static void
print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp)
{
  fprintf_unfiltered (fp, "break-range %s, %s",
		      event_location_to_string (b->location),
		      event_location_to_string (b->location_range_end));
  print_recreate_thread (b, fp);
}

/* The breakpoint_ops structure to be used in ranged breakpoints.  */

static struct breakpoint_ops ranged_breakpoint_ops;

/* Find the address where the end of the breakpoint range should be
   placed, given the SAL of the end of the range.  This is so that if
   the user provides a line number, the end of the range is set to the
   last instruction of the given line.  */

static CORE_ADDR
find_breakpoint_range_end (struct symtab_and_line sal)
{
  CORE_ADDR end;

  /* If the user provided a PC value, use it.  Otherwise,
     find the address of the end of the given location.  */
  if (sal.explicit_pc)
    end = sal.pc;
  else
    {
      int ret;
      CORE_ADDR start;

      ret = find_line_pc_range (sal, &start, &end);
      if (!ret)
	error (_("Could not find location of the end of the range."));

      /* find_line_pc_range returns the start of the next line.  */
      end--;
    }

  return end;
}

/* Implement the "break-range" CLI command.  */

static void
break_range_command (char *arg, int from_tty)
{
  char *arg_start, *addr_string_start;
  struct linespec_result canonical_start, canonical_end;
  int bp_count, can_use_bp, length;
  CORE_ADDR end;
  struct breakpoint *b;
  struct symtab_and_line sal_start, sal_end;
  struct cleanup *cleanup_bkpt;
  struct linespec_sals *lsal_start, *lsal_end;
  struct event_location *start_location, *end_location;

  /* We don't support software ranged breakpoints.  */
  if (target_ranged_break_num_registers () < 0)
    error (_("This target does not support hardware ranged breakpoints."));

  bp_count = hw_breakpoint_used_count ();
  bp_count += target_ranged_break_num_registers ();
  can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint,
						   bp_count, 0);
  if (can_use_bp < 0)
    error (_("Hardware breakpoints used exceeds limit."));

  arg = skip_spaces (arg);
  if (arg == NULL || arg[0] == '\0')
    error(_("No address range specified."));

  init_linespec_result (&canonical_start);

  arg_start = arg;
  start_location = string_to_event_location (&arg, current_language);
  cleanup_bkpt = make_cleanup_delete_event_location (start_location);
  parse_breakpoint_sals (start_location, &canonical_start);
  make_cleanup_destroy_linespec_result (&canonical_start);

  if (arg[0] != ',')
    error (_("Too few arguments."));
  else if (VEC_empty (linespec_sals, canonical_start.sals))
    error (_("Could not find location of the beginning of the range."));

  lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0);

  if (VEC_length (linespec_sals, canonical_start.sals) > 1
      || lsal_start->sals.nelts != 1)
    error (_("Cannot create a ranged breakpoint with multiple locations."));

  sal_start = lsal_start->sals.sals[0];
  addr_string_start = savestring (arg_start, arg - arg_start);
  make_cleanup (xfree, addr_string_start);

  arg++;	/* Skip the comma.  */
  arg = skip_spaces (arg);

  /* Parse the end location.  */

  init_linespec_result (&canonical_end);
  arg_start = arg;

  /* We call decode_line_full directly here instead of using
     parse_breakpoint_sals because we need to specify the start location's
     symtab and line as the default symtab and line for the end of the
     range.  This makes it possible to have ranges like "foo.c:27, +14",
     where +14 means 14 lines from the start location.  */
  end_location = string_to_event_location (&arg, current_language);
  make_cleanup_delete_event_location (end_location);
  decode_line_full (end_location, DECODE_LINE_FUNFIRSTLINE, NULL,
		    sal_start.symtab, sal_start.line,
		    &canonical_end, NULL, NULL);

  make_cleanup_destroy_linespec_result (&canonical_end);

  if (VEC_empty (linespec_sals, canonical_end.sals))
    error (_("Could not find location of the end of the range."));

  lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0);
  if (VEC_length (linespec_sals, canonical_end.sals) > 1
      || lsal_end->sals.nelts != 1)
    error (_("Cannot create a ranged breakpoint with multiple locations."));

  sal_end = lsal_end->sals.sals[0];

  end = find_breakpoint_range_end (sal_end);
  if (sal_start.pc > end)
    error (_("Invalid address range, end precedes start."));

  length = end - sal_start.pc + 1;
  if (length < 0)
    /* Length overflowed.  */
    error (_("Address range too large."));
  else if (length == 1)
    {
      /* This range is simple enough to be handled by
	 the `hbreak' command.  */
      hbreak_command (addr_string_start, 1);

      do_cleanups (cleanup_bkpt);

      return;
    }

  /* Now set up the breakpoint.  */
  b = set_raw_breakpoint (get_current_arch (), sal_start,
			  bp_hardware_breakpoint, &ranged_breakpoint_ops);
  set_breakpoint_count (breakpoint_count + 1);
  b->number = breakpoint_count;
  b->disposition = disp_donttouch;
  b->location = copy_event_location (start_location);
  b->location_range_end = copy_event_location (end_location);
  b->loc->length = length;

  do_cleanups (cleanup_bkpt);

  mention (b);
  observer_notify_breakpoint_created (b);
  update_global_location_list (UGLL_MAY_INSERT);
}

/*  Return non-zero if EXP is verified as constant.  Returned zero
    means EXP is variable.  Also the constant detection may fail for
    some constant expressions and in such case still falsely return
    zero.  */

static int
watchpoint_exp_is_const (const struct expression *exp)
{
  int i = exp->nelts;

  while (i > 0)
    {
      int oplenp, argsp;

      /* We are only interested in the descriptor of each element.  */
      operator_length (exp, i, &oplenp, &argsp);
      i -= oplenp;

      switch (exp->elts[i].opcode)
	{
	case BINOP_ADD:
	case BINOP_SUB:
	case BINOP_MUL:
	case BINOP_DIV:
	case BINOP_REM:
	case BINOP_MOD:
	case BINOP_LSH:
	case BINOP_RSH:
	case BINOP_LOGICAL_AND:
	case BINOP_LOGICAL_OR:
	case BINOP_BITWISE_AND:
	case BINOP_BITWISE_IOR:
	case BINOP_BITWISE_XOR:
	case BINOP_EQUAL:
	case BINOP_NOTEQUAL:
	case BINOP_LESS:
	case BINOP_GTR:
	case BINOP_LEQ:
	case BINOP_GEQ:
	case BINOP_REPEAT:
	case BINOP_COMMA:
	case BINOP_EXP:
	case BINOP_MIN:
	case BINOP_MAX:
	case BINOP_INTDIV:
	case BINOP_CONCAT:
	case TERNOP_COND:
	case TERNOP_SLICE:

	case OP_LONG:
	case OP_DOUBLE:
	case OP_DECFLOAT:
	case OP_LAST:
	case OP_COMPLEX:
	case OP_STRING:
	case OP_ARRAY:
	case OP_TYPE:
	case OP_TYPEOF:
	case OP_DECLTYPE:
	case OP_TYPEID:
	case OP_NAME:
	case OP_OBJC_NSSTRING:

	case UNOP_NEG:
	case UNOP_LOGICAL_NOT:
	case UNOP_COMPLEMENT:
	case UNOP_ADDR:
	case UNOP_HIGH:
	case UNOP_CAST:

	case UNOP_CAST_TYPE:
	case UNOP_REINTERPRET_CAST:
	case UNOP_DYNAMIC_CAST:
	  /* Unary, binary and ternary operators: We have to check
	     their operands.  If they are constant, then so is the
	     result of that operation.  For instance, if A and B are
	     determined to be constants, then so is "A + B".

	     UNOP_IND is one exception to the rule above, because the
	     value of *ADDR is not necessarily a constant, even when
	     ADDR is.  */
	  break;

	case OP_VAR_VALUE:
	  /* Check whether the associated symbol is a constant.

	     We use SYMBOL_CLASS rather than TYPE_CONST because it's
	     possible that a buggy compiler could mark a variable as
	     constant even when it is not, and TYPE_CONST would return
	     true in this case, while SYMBOL_CLASS wouldn't.

	     We also have to check for function symbols because they
	     are always constant.  */
	  {
	    struct symbol *s = exp->elts[i + 2].symbol;

	    if (SYMBOL_CLASS (s) != LOC_BLOCK
		&& SYMBOL_CLASS (s) != LOC_CONST
		&& SYMBOL_CLASS (s) != LOC_CONST_BYTES)
	      return 0;
	    break;
	  }

	/* The default action is to return 0 because we are using
	   the optimistic approach here: If we don't know something,
	   then it is not a constant.  */
	default:
	  return 0;
	}
    }

  return 1;
}

/* Implement the "dtor" breakpoint_ops method for watchpoints.  */

static void
dtor_watchpoint (struct breakpoint *self)
{
  struct watchpoint *w = (struct watchpoint *) self;

  xfree (w->exp_string);
  xfree (w->exp_string_reparse);
  value_free (w->val);

  base_breakpoint_ops.dtor (self);
}

/* Implement the "re_set" breakpoint_ops method for watchpoints.  */

static void
re_set_watchpoint (struct breakpoint *b)
{
  struct watchpoint *w = (struct watchpoint *) b;

  /* Watchpoint can be either on expression using entirely global
     variables, or it can be on local variables.

     Watchpoints of the first kind are never auto-deleted, and even
     persist across program restarts.  Since they can use variables
     from shared libraries, we need to reparse expression as libraries
     are loaded and unloaded.

     Watchpoints on local variables can also change meaning as result
     of solib event.  For example, if a watchpoint uses both a local
     and a global variables in expression, it's a local watchpoint,
     but unloading of a shared library will make the expression
     invalid.  This is not a very common use case, but we still
     re-evaluate expression, to avoid surprises to the user.

     Note that for local watchpoints, we re-evaluate it only if
     watchpoints frame id is still valid.  If it's not, it means the
     watchpoint is out of scope and will be deleted soon.  In fact,
     I'm not sure we'll ever be called in this case.

     If a local watchpoint's frame id is still valid, then
     w->exp_valid_block is likewise valid, and we can safely use it.

     Don't do anything about disabled watchpoints, since they will be
     reevaluated again when enabled.  */
  update_watchpoint (w, 1 /* reparse */);
}

/* Implement the "insert" breakpoint_ops method for hardware watchpoints.  */

static int
insert_watchpoint (struct bp_location *bl)
{
  struct watchpoint *w = (struct watchpoint *) bl->owner;
  int length = w->exact ? 1 : bl->length;

  return target_insert_watchpoint (bl->address, length, bl->watchpoint_type,
				   w->cond_exp.get ());
}

/* Implement the "remove" breakpoint_ops method for hardware watchpoints.  */

static int
remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason)
{
  struct watchpoint *w = (struct watchpoint *) bl->owner;
  int length = w->exact ? 1 : bl->length;

  return target_remove_watchpoint (bl->address, length, bl->watchpoint_type,
				   w->cond_exp.get ());
}

static int
breakpoint_hit_watchpoint (const struct bp_location *bl,
			   struct address_space *aspace, CORE_ADDR bp_addr,
			   const struct target_waitstatus *ws)
{
  struct breakpoint *b = bl->owner;
  struct watchpoint *w = (struct watchpoint *) b;

  /* Continuable hardware watchpoints are treated as non-existent if the
     reason we stopped wasn't a hardware watchpoint (we didn't stop on
     some data address).  Otherwise gdb won't stop on a break instruction
     in the code (not from a breakpoint) when a hardware watchpoint has
     been defined.  Also skip watchpoints which we know did not trigger
     (did not match the data address).  */
  if (is_hardware_watchpoint (b)
      && w->watchpoint_triggered == watch_triggered_no)
    return 0;

  return 1;
}

static void
check_status_watchpoint (bpstat bs)
{
  gdb_assert (is_watchpoint (bs->breakpoint_at));

  bpstat_check_watchpoint (bs);
}

/* Implement the "resources_needed" breakpoint_ops method for
   hardware watchpoints.  */

static int
resources_needed_watchpoint (const struct bp_location *bl)
{
  struct watchpoint *w = (struct watchpoint *) bl->owner;
  int length = w->exact? 1 : bl->length;

  return target_region_ok_for_hw_watchpoint (bl->address, length);
}

/* Implement the "works_in_software_mode" breakpoint_ops method for
   hardware watchpoints.  */

static int
works_in_software_mode_watchpoint (const struct breakpoint *b)
{
  /* Read and access watchpoints only work with hardware support.  */
  return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint;
}

static enum print_stop_action
print_it_watchpoint (bpstat bs)
{
  struct cleanup *old_chain;
  struct breakpoint *b;
  struct ui_file *stb;
  enum print_stop_action result;
  struct watchpoint *w;
  struct ui_out *uiout = current_uiout;

  gdb_assert (bs->bp_location_at != NULL);

  b = bs->breakpoint_at;
  w = (struct watchpoint *) b;

  stb = mem_fileopen ();
  old_chain = make_cleanup_ui_file_delete (stb);

  annotate_watchpoint (b->number);
  maybe_print_thread_hit_breakpoint (uiout);

  switch (b->type)
    {
    case bp_watchpoint:
    case bp_hardware_watchpoint:
      if (ui_out_is_mi_like_p (uiout))
	ui_out_field_string
	  (uiout, "reason",
	   async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER));
      mention (b);
      make_cleanup_ui_out_tuple_begin_end (uiout, "value");
      ui_out_text (uiout, "\nOld value = ");
      watchpoint_value_print (bs->old_val, stb);
      ui_out_field_stream (uiout, "old", stb);
      ui_out_text (uiout, "\nNew value = ");
      watchpoint_value_print (w->val, stb);
      ui_out_field_stream (uiout, "new", stb);
      ui_out_text (uiout, "\n");
      /* More than one watchpoint may have been triggered.  */
      result = PRINT_UNKNOWN;
      break;

    case bp_read_watchpoint:
      if (ui_out_is_mi_like_p (uiout))
	ui_out_field_string
	  (uiout, "reason",
	   async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER));
      mention (b);
      make_cleanup_ui_out_tuple_begin_end (uiout, "value");
      ui_out_text (uiout, "\nValue = ");
      watchpoint_value_print (w->val, stb);
      ui_out_field_stream (uiout, "value", stb);
      ui_out_text (uiout, "\n");
      result = PRINT_UNKNOWN;
      break;

    case bp_access_watchpoint:
      if (bs->old_val != NULL)
	{
	  if (ui_out_is_mi_like_p (uiout))
	    ui_out_field_string
	      (uiout, "reason",
	       async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER));
	  mention (b);
	  make_cleanup_ui_out_tuple_begin_end (uiout, "value");
	  ui_out_text (uiout, "\nOld value = ");
	  watchpoint_value_print (bs->old_val, stb);
	  ui_out_field_stream (uiout, "old", stb);
	  ui_out_text (uiout, "\nNew value = ");
	}
      else
	{
	  mention (b);
	  if (ui_out_is_mi_like_p (uiout))
	    ui_out_field_string
	      (uiout, "reason",
	       async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER));
	  make_cleanup_ui_out_tuple_begin_end (uiout, "value");
	  ui_out_text (uiout, "\nValue = ");
	}
      watchpoint_value_print (w->val, stb);
      ui_out_field_stream (uiout, "new", stb);
      ui_out_text (uiout, "\n");
      result = PRINT_UNKNOWN;
      break;
    default:
      result = PRINT_UNKNOWN;
    }

  do_cleanups (old_chain);
  return result;
}

/* Implement the "print_mention" breakpoint_ops method for hardware
   watchpoints.  */

static void
print_mention_watchpoint (struct breakpoint *b)
{
  struct cleanup *ui_out_chain;
  struct watchpoint *w = (struct watchpoint *) b;
  struct ui_out *uiout = current_uiout;

  switch (b->type)
    {
    case bp_watchpoint:
      ui_out_text (uiout, "Watchpoint ");
      ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt");
      break;
    case bp_hardware_watchpoint:
      ui_out_text (uiout, "Hardware watchpoint ");
      ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt");
      break;
    case bp_read_watchpoint:
      ui_out_text (uiout, "Hardware read watchpoint ");
      ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt");
      break;
    case bp_access_watchpoint:
      ui_out_text (uiout, "Hardware access (read/write) watchpoint ");
      ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt");
      break;
    default:
      internal_error (__FILE__, __LINE__,
		      _("Invalid hardware watchpoint type."));
    }

  ui_out_field_int (uiout, "number", b->number);
  ui_out_text (uiout, ": ");
  ui_out_field_string (uiout, "exp", w->exp_string);
  do_cleanups (ui_out_chain);
}

/* Implement the "print_recreate" breakpoint_ops method for
   watchpoints.  */

static void
print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp)
{
  struct watchpoint *w = (struct watchpoint *) b;

  switch (b->type)
    {
    case bp_watchpoint:
    case bp_hardware_watchpoint:
      fprintf_unfiltered (fp, "watch");
      break;
    case bp_read_watchpoint:
      fprintf_unfiltered (fp, "rwatch");
      break;
    case bp_access_watchpoint:
      fprintf_unfiltered (fp, "awatch");
      break;
    default:
      internal_error (__FILE__, __LINE__,
		      _("Invalid watchpoint type."));
    }

  fprintf_unfiltered (fp, " %s", w->exp_string);
  print_recreate_thread (b, fp);
}

/* Implement the "explains_signal" breakpoint_ops method for
   watchpoints.  */

static int
explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig)
{
  /* A software watchpoint cannot cause a signal other than
     GDB_SIGNAL_TRAP.  */
  if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP)
    return 0;

  return 1;
}

/* The breakpoint_ops structure to be used in hardware watchpoints.  */

static struct breakpoint_ops watchpoint_breakpoint_ops;

/* Implement the "insert" breakpoint_ops method for
   masked hardware watchpoints.  */

static int
insert_masked_watchpoint (struct bp_location *bl)
{
  struct watchpoint *w = (struct watchpoint *) bl->owner;

  return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask,
					bl->watchpoint_type);
}

/* Implement the "remove" breakpoint_ops method for
   masked hardware watchpoints.  */

static int
remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason)
{
  struct watchpoint *w = (struct watchpoint *) bl->owner;

  return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask,
				        bl->watchpoint_type);
}

/* Implement the "resources_needed" breakpoint_ops method for
   masked hardware watchpoints.  */

static int
resources_needed_masked_watchpoint (const struct bp_location *bl)
{
  struct watchpoint *w = (struct watchpoint *) bl->owner;

  return target_masked_watch_num_registers (bl->address, w->hw_wp_mask);
}

/* Implement the "works_in_software_mode" breakpoint_ops method for
   masked hardware watchpoints.  */

static int
works_in_software_mode_masked_watchpoint (const struct breakpoint *b)
{
  return 0;
}

/* Implement the "print_it" breakpoint_ops method for
   masked hardware watchpoints.  */

static enum print_stop_action
print_it_masked_watchpoint (bpstat bs)
{
  struct breakpoint *b = bs->breakpoint_at;
  struct ui_out *uiout = current_uiout;

  /* Masked watchpoints have only one location.  */
  gdb_assert (b->loc && b->loc->next == NULL);

  annotate_watchpoint (b->number);
  maybe_print_thread_hit_breakpoint (uiout);

  switch (b->type)
    {
    case bp_hardware_watchpoint:
      if (ui_out_is_mi_like_p (uiout))
	ui_out_field_string
	  (uiout, "reason",
	   async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER));
      break;

    case bp_read_watchpoint:
      if (ui_out_is_mi_like_p (uiout))
	ui_out_field_string
	  (uiout, "reason",
	   async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER));
      break;

    case bp_access_watchpoint:
      if (ui_out_is_mi_like_p (uiout))
	ui_out_field_string
	  (uiout, "reason",
	   async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER));
      break;
    default:
      internal_error (__FILE__, __LINE__,
		      _("Invalid hardware watchpoint type."));
    }

  mention (b);
  ui_out_text (uiout, _("\n\
Check the underlying instruction at PC for the memory\n\
address and value which triggered this watchpoint.\n"));
  ui_out_text (uiout, "\n");

  /* More than one watchpoint may have been triggered.  */
  return PRINT_UNKNOWN;
}

/* Implement the "print_one_detail" breakpoint_ops method for
   masked hardware watchpoints.  */

static void
print_one_detail_masked_watchpoint (const struct breakpoint *b,
				    struct ui_out *uiout)
{
  struct watchpoint *w = (struct watchpoint *) b;

  /* Masked watchpoints have only one location.  */
  gdb_assert (b->loc && b->loc->next == NULL);

  ui_out_text (uiout, "\tmask ");
  ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask);
  ui_out_text (uiout, "\n");
}

/* Implement the "print_mention" breakpoint_ops method for
   masked hardware watchpoints.  */

static void
print_mention_masked_watchpoint (struct breakpoint *b)
{
  struct watchpoint *w = (struct watchpoint *) b;
  struct ui_out *uiout = current_uiout;
  struct cleanup *ui_out_chain;

  switch (b->type)
    {
    case bp_hardware_watchpoint:
      ui_out_text (uiout, "Masked hardware watchpoint ");
      ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt");
      break;
    case bp_read_watchpoint:
      ui_out_text (uiout, "Masked hardware read watchpoint ");
      ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt");
      break;
    case bp_access_watchpoint:
      ui_out_text (uiout, "Masked hardware access (read/write) watchpoint ");
      ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt");
      break;
    default:
      internal_error (__FILE__, __LINE__,
		      _("Invalid hardware watchpoint type."));
    }

  ui_out_field_int (uiout, "number", b->number);
  ui_out_text (uiout, ": ");
  ui_out_field_string (uiout, "exp", w->exp_string);
  do_cleanups (ui_out_chain);
}

/* Implement the "print_recreate" breakpoint_ops method for
   masked hardware watchpoints.  */

static void
print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp)
{
  struct watchpoint *w = (struct watchpoint *) b;
  char tmp[40];

  switch (b->type)
    {
    case bp_hardware_watchpoint:
      fprintf_unfiltered (fp, "watch");
      break;
    case bp_read_watchpoint:
      fprintf_unfiltered (fp, "rwatch");
      break;
    case bp_access_watchpoint:
      fprintf_unfiltered (fp, "awatch");
      break;
    default:
      internal_error (__FILE__, __LINE__,
		      _("Invalid hardware watchpoint type."));
    }

  sprintf_vma (tmp, w->hw_wp_mask);
  fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp);
  print_recreate_thread (b, fp);
}

/* The breakpoint_ops structure to be used in masked hardware watchpoints.  */

static struct breakpoint_ops masked_watchpoint_breakpoint_ops;

/* Tell whether the given watchpoint is a masked hardware watchpoint.  */

static int
is_masked_watchpoint (const struct breakpoint *b)
{
  return b->ops == &masked_watchpoint_breakpoint_ops;
}

/* accessflag:  hw_write:  watch write, 
                hw_read:   watch read, 
		hw_access: watch access (read or write) */
static void
watch_command_1 (const char *arg, int accessflag, int from_tty,
		 int just_location, int internal)
{
  struct breakpoint *b, *scope_breakpoint = NULL;
  const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL;
  struct value *val, *mark, *result;
  int saved_bitpos = 0, saved_bitsize = 0;
  struct frame_info *frame;
  const char *exp_start = NULL;
  const char *exp_end = NULL;
  const char *tok, *end_tok;
  int toklen = -1;
  const char *cond_start = NULL;
  const char *cond_end = NULL;
  enum bptype bp_type;
  int thread = -1;
  int pc = 0;
  /* Flag to indicate whether we are going to use masks for
     the hardware watchpoint.  */
  int use_mask = 0;
  CORE_ADDR mask = 0;
  struct watchpoint *w;
  char *expression;
  struct cleanup *back_to;

  /* Make sure that we actually have parameters to parse.  */
  if (arg != NULL && arg[0] != '\0')
    {
      const char *value_start;

      exp_end = arg + strlen (arg);

      /* Look for "parameter value" pairs at the end
	 of the arguments string.  */
      for (tok = exp_end - 1; tok > arg; tok--)
	{
	  /* Skip whitespace at the end of the argument list.  */
	  while (tok > arg && (*tok == ' ' || *tok == '\t'))
	    tok--;

	  /* Find the beginning of the last token.
	     This is the value of the parameter.  */
	  while (tok > arg && (*tok != ' ' && *tok != '\t'))
	    tok--;
	  value_start = tok + 1;

	  /* Skip whitespace.  */
	  while (tok > arg && (*tok == ' ' || *tok == '\t'))
	    tok--;

	  end_tok = tok;

	  /* Find the beginning of the second to last token.
	     This is the parameter itself.  */
	  while (tok > arg && (*tok != ' ' && *tok != '\t'))
	    tok--;
	  tok++;
	  toklen = end_tok - tok + 1;

	  if (toklen == 6 && startswith (tok, "thread"))
	    {
	      struct thread_info *thr;
	      /* At this point we've found a "thread" token, which means
		 the user is trying to set a watchpoint that triggers
		 only in a specific thread.  */
	      const char *endp;

	      if (thread != -1)
		error(_("You can specify only one thread."));

	      /* Extract the thread ID from the next token.  */
	      thr = parse_thread_id (value_start, &endp);

	      /* Check if the user provided a valid thread ID.  */
	      if (*endp != ' ' && *endp != '\t' && *endp != '\0')
		invalid_thread_id_error (value_start);

	      thread = thr->global_num;
	    }
	  else if (toklen == 4 && startswith (tok, "mask"))
	    {
	      /* We've found a "mask" token, which means the user wants to
		 create a hardware watchpoint that is going to have the mask
		 facility.  */
	      struct value *mask_value, *mark;

	      if (use_mask)
		error(_("You can specify only one mask."));

	      use_mask = just_location = 1;

	      mark = value_mark ();
	      mask_value = parse_to_comma_and_eval (&value_start);
	      mask = value_as_address (mask_value);
	      value_free_to_mark (mark);
	    }
	  else
	    /* We didn't recognize what we found.  We should stop here.  */
	    break;

	  /* Truncate the string and get rid of the "parameter value" pair before
	     the arguments string is parsed by the parse_exp_1 function.  */
	  exp_end = tok;
	}
    }
  else
    exp_end = arg;

  /* Parse the rest of the arguments.  From here on out, everything
     is in terms of a newly allocated string instead of the original
     ARG.  */
  innermost_block = NULL;
  expression = savestring (arg, exp_end - arg);
  back_to = make_cleanup (xfree, expression);
  exp_start = arg = expression;
  expression_up exp = parse_exp_1 (&arg, 0, 0, 0);
  exp_end = arg;
  /* Remove trailing whitespace from the expression before saving it.
     This makes the eventual display of the expression string a bit
     prettier.  */
  while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t'))
    --exp_end;

  /* Checking if the expression is not constant.  */
  if (watchpoint_exp_is_const (exp.get ()))
    {
      int len;

      len = exp_end - exp_start;
      while (len > 0 && isspace (exp_start[len - 1]))
	len--;
      error (_("Cannot watch constant value `%.*s'."), len, exp_start);
    }

  exp_valid_block = innermost_block;
  mark = value_mark ();
  fetch_subexp_value (exp.get (), &pc, &val, &result, NULL, just_location);

  if (val != NULL && just_location)
    {
      saved_bitpos = value_bitpos (val);
      saved_bitsize = value_bitsize (val);
    }

  if (just_location)
    {
      int ret;

      exp_valid_block = NULL;
      val = value_addr (result);
      release_value (val);
      value_free_to_mark (mark);

      if (use_mask)
	{
	  ret = target_masked_watch_num_registers (value_as_address (val),
						   mask);
	  if (ret == -1)
	    error (_("This target does not support masked watchpoints."));
	  else if (ret == -2)
	    error (_("Invalid mask or memory region."));
	}
    }
  else if (val != NULL)
    release_value (val);

  tok = skip_spaces_const (arg);
  end_tok = skip_to_space_const (tok);

  toklen = end_tok - tok;
  if (toklen >= 1 && strncmp (tok, "if", toklen) == 0)
    {
      innermost_block = NULL;
      tok = cond_start = end_tok + 1;
      parse_exp_1 (&tok, 0, 0, 0);

      /* The watchpoint expression may not be local, but the condition
	 may still be.  E.g.: `watch global if local > 0'.  */
      cond_exp_valid_block = innermost_block;

      cond_end = tok;
    }
  if (*tok)
    error (_("Junk at end of command."));

  frame = block_innermost_frame (exp_valid_block);

  /* If the expression is "local", then set up a "watchpoint scope"
     breakpoint at the point where we've left the scope of the watchpoint
     expression.  Create the scope breakpoint before the watchpoint, so
     that we will encounter it first in bpstat_stop_status.  */
  if (exp_valid_block && frame)
    {
      if (frame_id_p (frame_unwind_caller_id (frame)))
	{
 	  scope_breakpoint
	    = create_internal_breakpoint (frame_unwind_caller_arch (frame),
					  frame_unwind_caller_pc (frame),
					  bp_watchpoint_scope,
					  &momentary_breakpoint_ops);

	  scope_breakpoint->enable_state = bp_enabled;

	  /* Automatically delete the breakpoint when it hits.  */
	  scope_breakpoint->disposition = disp_del;

	  /* Only break in the proper frame (help with recursion).  */
	  scope_breakpoint->frame_id = frame_unwind_caller_id (frame);

	  /* Set the address at which we will stop.  */
	  scope_breakpoint->loc->gdbarch
	    = frame_unwind_caller_arch (frame);
	  scope_breakpoint->loc->requested_address
	    = frame_unwind_caller_pc (frame);
	  scope_breakpoint->loc->address
	    = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch,
					 scope_breakpoint->loc->requested_address,
					 scope_breakpoint->type);
	}
    }

  /* Now set up the breakpoint.  We create all watchpoints as hardware
     watchpoints here even if hardware watchpoints are turned off, a call
     to update_watchpoint later in this function will cause the type to
     drop back to bp_watchpoint (software watchpoint) if required.  */

  if (accessflag == hw_read)
    bp_type = bp_read_watchpoint;
  else if (accessflag == hw_access)
    bp_type = bp_access_watchpoint;
  else
    bp_type = bp_hardware_watchpoint;

  w = new watchpoint ();
  b = &w->base;
  if (use_mask)
    init_raw_breakpoint_without_location (b, NULL, bp_type,
					  &masked_watchpoint_breakpoint_ops);
  else
    init_raw_breakpoint_without_location (b, NULL, bp_type,
					  &watchpoint_breakpoint_ops);
  b->thread = thread;
  b->disposition = disp_donttouch;
  b->pspace = current_program_space;
  w->exp = std::move (exp);
  w->exp_valid_block = exp_valid_block;
  w->cond_exp_valid_block = cond_exp_valid_block;
  if (just_location)
    {
      struct type *t = value_type (val);
      CORE_ADDR addr = value_as_address (val);

      t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t)));

      std::string name = type_to_string (t);

      w->exp_string_reparse = xstrprintf ("* (%s *) %s", name.c_str (),
					  core_addr_to_string (addr));

      w->exp_string = xstrprintf ("-location %.*s",
				  (int) (exp_end - exp_start), exp_start);

      /* The above expression is in C.  */
      b->language = language_c;
    }
  else
    w->exp_string = savestring (exp_start, exp_end - exp_start);

  if (use_mask)
    {
      w->hw_wp_mask = mask;
    }
  else
    {
      w->val = val;
      w->val_bitpos = saved_bitpos;
      w->val_bitsize = saved_bitsize;
      w->val_valid = 1;
    }

  if (cond_start)
    b->cond_string = savestring (cond_start, cond_end - cond_start);
  else
    b->cond_string = 0;

  if (frame)
    {
      w->watchpoint_frame = get_frame_id (frame);
      w->watchpoint_thread = inferior_ptid;
    }
  else
    {
      w->watchpoint_frame = null_frame_id;
      w->watchpoint_thread = null_ptid;
    }

  if (scope_breakpoint != NULL)
    {
      /* The scope breakpoint is related to the watchpoint.  We will
	 need to act on them together.  */
      b->related_breakpoint = scope_breakpoint;
      scope_breakpoint->related_breakpoint = b;
    }

  if (!just_location)
    value_free_to_mark (mark);

  TRY
    {
      /* Finally update the new watchpoint.  This creates the locations
	 that should be inserted.  */
      update_watchpoint (w, 1);
    }
  CATCH (e, RETURN_MASK_ALL)
    {
      delete_breakpoint (b);
      throw_exception (e);
    }
  END_CATCH

  install_breakpoint (internal, b, 1);
  do_cleanups (back_to);
}

/* Return count of debug registers needed to watch the given expression.
   If the watchpoint cannot be handled in hardware return zero.  */

static int
can_use_hardware_watchpoint (struct value *v)
{
  int found_memory_cnt = 0;
  struct value *head = v;

  /* Did the user specifically forbid us to use hardware watchpoints? */
  if (!can_use_hw_watchpoints)
    return 0;

  /* Make sure that the value of the expression depends only upon
     memory contents, and values computed from them within GDB.  If we
     find any register references or function calls, we can't use a
     hardware watchpoint.

     The idea here is that evaluating an expression generates a series
     of values, one holding the value of every subexpression.  (The
     expression a*b+c has five subexpressions: a, b, a*b, c, and
     a*b+c.)  GDB's values hold almost enough information to establish
     the criteria given above --- they identify memory lvalues,
     register lvalues, computed values, etcetera.  So we can evaluate
     the expression, and then scan the chain of values that leaves
     behind to decide whether we can detect any possible change to the
     expression's final value using only hardware watchpoints.

     However, I don't think that the values returned by inferior
     function calls are special in any way.  So this function may not
     notice that an expression involving an inferior function call
     can't be watched with hardware watchpoints.  FIXME.  */
  for (; v; v = value_next (v))
    {
      if (VALUE_LVAL (v) == lval_memory)
	{
	  if (v != head && value_lazy (v))
	    /* A lazy memory lvalue in the chain is one that GDB never
	       needed to fetch; we either just used its address (e.g.,
	       `a' in `a.b') or we never needed it at all (e.g., `a'
	       in `a,b').  This doesn't apply to HEAD; if that is
	       lazy then it was not readable, but watch it anyway.  */
	    ;
	  else
	    {
	      /* Ahh, memory we actually used!  Check if we can cover
                 it with hardware watchpoints.  */
	      struct type *vtype = check_typedef (value_type (v));

	      /* We only watch structs and arrays if user asked for it
		 explicitly, never if they just happen to appear in a
		 middle of some value chain.  */
	      if (v == head
		  || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT
		      && TYPE_CODE (vtype) != TYPE_CODE_ARRAY))
		{
		  CORE_ADDR vaddr = value_address (v);
		  int len;
		  int num_regs;

		  len = (target_exact_watchpoints
			 && is_scalar_type_recursive (vtype))?
		    1 : TYPE_LENGTH (value_type (v));

		  num_regs = target_region_ok_for_hw_watchpoint (vaddr, len);
		  if (!num_regs)
		    return 0;
		  else
		    found_memory_cnt += num_regs;
		}
	    }
	}
      else if (VALUE_LVAL (v) != not_lval
	       && deprecated_value_modifiable (v) == 0)
	return 0;	/* These are values from the history (e.g., $1).  */
      else if (VALUE_LVAL (v) == lval_register)
	return 0;	/* Cannot watch a register with a HW watchpoint.  */
    }

  /* The expression itself looks suitable for using a hardware
     watchpoint, but give the target machine a chance to reject it.  */
  return found_memory_cnt;
}

void
watch_command_wrapper (char *arg, int from_tty, int internal)
{
  watch_command_1 (arg, hw_write, from_tty, 0, internal);
}

/* A helper function that looks for the "-location" argument and then
   calls watch_command_1.  */

static void
watch_maybe_just_location (char *arg, int accessflag, int from_tty)
{
  int just_location = 0;

  if (arg
      && (check_for_argument (&arg, "-location", sizeof ("-location") - 1)
	  || check_for_argument (&arg, "-l", sizeof ("-l") - 1)))
    {
      arg = skip_spaces (arg);
      just_location = 1;
    }

  watch_command_1 (arg, accessflag, from_tty, just_location, 0);
}

static void
watch_command (char *arg, int from_tty)
{
  watch_maybe_just_location (arg, hw_write, from_tty);
}

void
rwatch_command_wrapper (char *arg, int from_tty, int internal)
{
  watch_command_1 (arg, hw_read, from_tty, 0, internal);
}

static void
rwatch_command (char *arg, int from_tty)
{
  watch_maybe_just_location (arg, hw_read, from_tty);
}

void
awatch_command_wrapper (char *arg, int from_tty, int internal)
{
  watch_command_1 (arg, hw_access, from_tty, 0, internal);
}

static void
awatch_command (char *arg, int from_tty)
{
  watch_maybe_just_location (arg, hw_access, from_tty);
}


/* Data for the FSM that manages the until(location)/advance commands
   in infcmd.c.  Here because it uses the mechanisms of
   breakpoints.  */

struct until_break_fsm
{
  /* The base class.  */
  struct thread_fsm thread_fsm;

  /* The thread that as current when the command was executed.  */
  int thread;

  /* The breakpoint set at the destination location.  */
  struct breakpoint *location_breakpoint;

  /* Breakpoint set at the return address in the caller frame.  May be
     NULL.  */
  struct breakpoint *caller_breakpoint;
};

static void until_break_fsm_clean_up (struct thread_fsm *self,
				      struct thread_info *thread);
static int until_break_fsm_should_stop (struct thread_fsm *self,
					struct thread_info *thread);
static enum async_reply_reason
  until_break_fsm_async_reply_reason (struct thread_fsm *self);

/* until_break_fsm's vtable.  */

static struct thread_fsm_ops until_break_fsm_ops =
{
  NULL, /* dtor */
  until_break_fsm_clean_up,
  until_break_fsm_should_stop,
  NULL, /* return_value */
  until_break_fsm_async_reply_reason,
};

/* Allocate a new until_break_command_fsm.  */

static struct until_break_fsm *
new_until_break_fsm (struct interp *cmd_interp, int thread,
		     struct breakpoint *location_breakpoint,
		     struct breakpoint *caller_breakpoint)
{
  struct until_break_fsm *sm;

  sm = XCNEW (struct until_break_fsm);
  thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops, cmd_interp);

  sm->thread = thread;
  sm->location_breakpoint = location_breakpoint;
  sm->caller_breakpoint = caller_breakpoint;

  return sm;
}

/* Implementation of the 'should_stop' FSM method for the
   until(location)/advance commands.  */

static int
until_break_fsm_should_stop (struct thread_fsm *self,
			     struct thread_info *tp)
{
  struct until_break_fsm *sm = (struct until_break_fsm *) self;

  if (bpstat_find_breakpoint (tp->control.stop_bpstat,
			      sm->location_breakpoint) != NULL
      || (sm->caller_breakpoint != NULL
	  && bpstat_find_breakpoint (tp->control.stop_bpstat,
				     sm->caller_breakpoint) != NULL))
    thread_fsm_set_finished (self);

  return 1;
}

/* Implementation of the 'clean_up' FSM method for the
   until(location)/advance commands.  */

static void
until_break_fsm_clean_up (struct thread_fsm *self,
			  struct thread_info *thread)
{
  struct until_break_fsm *sm = (struct until_break_fsm *) self;

  /* Clean up our temporary breakpoints.  */
  if (sm->location_breakpoint != NULL)
    {
      delete_breakpoint (sm->location_breakpoint);
      sm->location_breakpoint = NULL;
    }
  if (sm->caller_breakpoint != NULL)
    {
      delete_breakpoint (sm->caller_breakpoint);
      sm->caller_breakpoint = NULL;
    }
  delete_longjmp_breakpoint (sm->thread);
}

/* Implementation of the 'async_reply_reason' FSM method for the
   until(location)/advance commands.  */

static enum async_reply_reason
until_break_fsm_async_reply_reason (struct thread_fsm *self)
{
  return EXEC_ASYNC_LOCATION_REACHED;
}

void
until_break_command (char *arg, int from_tty, int anywhere)
{
  struct symtabs_and_lines sals;
  struct symtab_and_line sal;
  struct frame_info *frame;
  struct gdbarch *frame_gdbarch;
  struct frame_id stack_frame_id;
  struct frame_id caller_frame_id;
  struct breakpoint *location_breakpoint;
  struct breakpoint *caller_breakpoint = NULL;
  struct cleanup *old_chain, *cleanup;
  int thread;
  struct thread_info *tp;
  struct event_location *location;
  struct until_break_fsm *sm;

  clear_proceed_status (0);

  /* Set a breakpoint where the user wants it and at return from
     this function.  */

  location = string_to_event_location (&arg, current_language);
  cleanup = make_cleanup_delete_event_location (location);

  if (last_displayed_sal_is_valid ())
    sals = decode_line_1 (location, DECODE_LINE_FUNFIRSTLINE, NULL,
			  get_last_displayed_symtab (),
			  get_last_displayed_line ());
  else
    sals = decode_line_1 (location, DECODE_LINE_FUNFIRSTLINE,
			  NULL, (struct symtab *) NULL, 0);

  if (sals.nelts != 1)
    error (_("Couldn't get information on specified line."));

  sal = sals.sals[0];
  xfree (sals.sals);	/* malloc'd, so freed.  */

  if (*arg)
    error (_("Junk at end of arguments."));

  resolve_sal_pc (&sal);

  tp = inferior_thread ();
  thread = tp->global_num;

  old_chain = make_cleanup (null_cleanup, NULL);

  /* Note linespec handling above invalidates the frame chain.
     Installing a breakpoint also invalidates the frame chain (as it
     may need to switch threads), so do any frame handling before
     that.  */

  frame = get_selected_frame (NULL);
  frame_gdbarch = get_frame_arch (frame);
  stack_frame_id = get_stack_frame_id (frame);
  caller_frame_id = frame_unwind_caller_id (frame);

  /* Keep within the current frame, or in frames called by the current
     one.  */

  if (frame_id_p (caller_frame_id))
    {
      struct symtab_and_line sal2;
      struct gdbarch *caller_gdbarch;

      sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0);
      sal2.pc = frame_unwind_caller_pc (frame);
      caller_gdbarch = frame_unwind_caller_arch (frame);
      caller_breakpoint = set_momentary_breakpoint (caller_gdbarch,
						    sal2,
						    caller_frame_id,
						    bp_until);
      make_cleanup_delete_breakpoint (caller_breakpoint);

      set_longjmp_breakpoint (tp, caller_frame_id);
      make_cleanup (delete_longjmp_breakpoint_cleanup, &thread);
    }

  /* set_momentary_breakpoint could invalidate FRAME.  */
  frame = NULL;

  if (anywhere)
    /* If the user told us to continue until a specified location,
       we don't specify a frame at which we need to stop.  */
    location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal,
						    null_frame_id, bp_until);
  else
    /* Otherwise, specify the selected frame, because we want to stop
       only at the very same frame.  */
    location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal,
						    stack_frame_id, bp_until);
  make_cleanup_delete_breakpoint (location_breakpoint);

  sm = new_until_break_fsm (command_interp (), tp->global_num,
			    location_breakpoint, caller_breakpoint);
  tp->thread_fsm = &sm->thread_fsm;

  discard_cleanups (old_chain);

  proceed (-1, GDB_SIGNAL_DEFAULT);

  do_cleanups (cleanup);
}

/* This function attempts to parse an optional "if <cond>" clause
   from the arg string.  If one is not found, it returns NULL.

   Else, it returns a pointer to the condition string.  (It does not
   attempt to evaluate the string against a particular block.)  And,
   it updates arg to point to the first character following the parsed
   if clause in the arg string.  */

char *
ep_parse_optional_if_clause (char **arg)
{
  char *cond_string;

  if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2]))
    return NULL;

  /* Skip the "if" keyword.  */
  (*arg) += 2;

  /* Skip any extra leading whitespace, and record the start of the
     condition string.  */
  *arg = skip_spaces (*arg);
  cond_string = *arg;

  /* Assume that the condition occupies the remainder of the arg
     string.  */
  (*arg) += strlen (cond_string);

  return cond_string;
}

/* Commands to deal with catching events, such as signals, exceptions,
   process start/exit, etc.  */

typedef enum
{
  catch_fork_temporary, catch_vfork_temporary,
  catch_fork_permanent, catch_vfork_permanent
}
catch_fork_kind;

static void
catch_fork_command_1 (char *arg, int from_tty, 
		      struct cmd_list_element *command)
{
  struct gdbarch *gdbarch = get_current_arch ();
  char *cond_string = NULL;
  catch_fork_kind fork_kind;
  int tempflag;

  fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command);
  tempflag = (fork_kind == catch_fork_temporary
	      || fork_kind == catch_vfork_temporary);

  if (!arg)
    arg = "";
  arg = skip_spaces (arg);

  /* The allowed syntax is:
     catch [v]fork
     catch [v]fork if <cond>

     First, check if there's an if clause.  */
  cond_string = ep_parse_optional_if_clause (&arg);

  if ((*arg != '\0') && !isspace (*arg))
    error (_("Junk at end of arguments."));

  /* If this target supports it, create a fork or vfork catchpoint
     and enable reporting of such events.  */
  switch (fork_kind)
    {
    case catch_fork_temporary:
    case catch_fork_permanent:
      create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string,
                                          &catch_fork_breakpoint_ops);
      break;
    case catch_vfork_temporary:
    case catch_vfork_permanent:
      create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string,
                                          &catch_vfork_breakpoint_ops);
      break;
    default:
      error (_("unsupported or unknown fork kind; cannot catch it"));
      break;
    }
}

static void
catch_exec_command_1 (char *arg, int from_tty, 
		      struct cmd_list_element *command)
{
  struct exec_catchpoint *c;
  struct gdbarch *gdbarch = get_current_arch ();
  int tempflag;
  char *cond_string = NULL;

  tempflag = get_cmd_context (command) == CATCH_TEMPORARY;

  if (!arg)
    arg = "";
  arg = skip_spaces (arg);

  /* The allowed syntax is:
     catch exec
     catch exec if <cond>

     First, check if there's an if clause.  */
  cond_string = ep_parse_optional_if_clause (&arg);

  if ((*arg != '\0') && !isspace (*arg))
    error (_("Junk at end of arguments."));

  c = new exec_catchpoint ();
  init_catchpoint (&c->base, gdbarch, tempflag, cond_string,
		   &catch_exec_breakpoint_ops);
  c->exec_pathname = NULL;

  install_breakpoint (0, &c->base, 1);
}

void
init_ada_exception_breakpoint (struct breakpoint *b,
			       struct gdbarch *gdbarch,
			       struct symtab_and_line sal,
			       char *addr_string,
			       const struct breakpoint_ops *ops,
			       int tempflag,
			       int enabled,
			       int from_tty)
{
  if (from_tty)
    {
      struct gdbarch *loc_gdbarch = get_sal_arch (sal);
      if (!loc_gdbarch)
	loc_gdbarch = gdbarch;

      describe_other_breakpoints (loc_gdbarch,
				  sal.pspace, sal.pc, sal.section, -1);
      /* FIXME: brobecker/2006-12-28: Actually, re-implement a special
         version for exception catchpoints, because two catchpoints
         used for different exception names will use the same address.
         In this case, a "breakpoint ... also set at..." warning is
         unproductive.  Besides, the warning phrasing is also a bit
         inappropriate, we should use the word catchpoint, and tell
         the user what type of catchpoint it is.  The above is good
         enough for now, though.  */
    }

  init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops);

  b->enable_state = enabled ? bp_enabled : bp_disabled;
  b->disposition = tempflag ? disp_del : disp_donttouch;
  b->location = string_to_event_location (&addr_string,
					  language_def (language_ada));
  b->language = language_ada;
}

static void
catch_command (char *arg, int from_tty)
{
  error (_("Catch requires an event name."));
}


static void
tcatch_command (char *arg, int from_tty)
{
  error (_("Catch requires an event name."));
}

/* A qsort comparison function that sorts breakpoints in order.  */

static int
compare_breakpoints (const void *a, const void *b)
{
  const breakpoint_p *ba = (const breakpoint_p *) a;
  uintptr_t ua = (uintptr_t) *ba;
  const breakpoint_p *bb = (const breakpoint_p *) b;
  uintptr_t ub = (uintptr_t) *bb;

  if ((*ba)->number < (*bb)->number)
    return -1;
  else if ((*ba)->number > (*bb)->number)
    return 1;

  /* Now sort by address, in case we see, e..g, two breakpoints with
     the number 0.  */
  if (ua < ub)
    return -1;
  return ua > ub ? 1 : 0;
}

/* Delete breakpoints by address or line.  */

static void
clear_command (char *arg, int from_tty)
{
  struct breakpoint *b, *prev;
  VEC(breakpoint_p) *found = 0;
  int ix;
  int default_match;
  struct symtabs_and_lines sals;
  struct symtab_and_line sal;
  int i;
  struct cleanup *cleanups = make_cleanup (null_cleanup, NULL);

  if (arg)
    {
      sals = decode_line_with_current_source (arg,
					      (DECODE_LINE_FUNFIRSTLINE
					       | DECODE_LINE_LIST_MODE));
      make_cleanup (xfree, sals.sals);
      default_match = 0;
    }
  else
    {
      sals.sals = XNEW (struct symtab_and_line);
      make_cleanup (xfree, sals.sals);
      init_sal (&sal);		/* Initialize to zeroes.  */

      /* Set sal's line, symtab, pc, and pspace to the values
	 corresponding to the last call to print_frame_info.  If the
	 codepoint is not valid, this will set all the fields to 0.  */
      get_last_displayed_sal (&sal);
      if (sal.symtab == 0)
	error (_("No source file specified."));

      sals.sals[0] = sal;
      sals.nelts = 1;

      default_match = 1;
    }

  /* We don't call resolve_sal_pc here.  That's not as bad as it
     seems, because all existing breakpoints typically have both
     file/line and pc set.  So, if clear is given file/line, we can
     match this to existing breakpoint without obtaining pc at all.

     We only support clearing given the address explicitly 
     present in breakpoint table.  Say, we've set breakpoint 
     at file:line.  There were several PC values for that file:line,
     due to optimization, all in one block.

     We've picked one PC value.  If "clear" is issued with another
     PC corresponding to the same file:line, the breakpoint won't
     be cleared.  We probably can still clear the breakpoint, but 
     since the other PC value is never presented to user, user
     can only find it by guessing, and it does not seem important
     to support that.  */

  /* For each line spec given, delete bps which correspond to it.  Do
     it in two passes, solely to preserve the current behavior that
     from_tty is forced true if we delete more than one
     breakpoint.  */

  found = NULL;
  make_cleanup (VEC_cleanup (breakpoint_p), &found);
  for (i = 0; i < sals.nelts; i++)
    {
      const char *sal_fullname;

      /* If exact pc given, clear bpts at that pc.
         If line given (pc == 0), clear all bpts on specified line.
         If defaulting, clear all bpts on default line
         or at default pc.

         defaulting    sal.pc != 0    tests to do

         0              1             pc
         1              1             pc _and_ line
         0              0             line
         1              0             <can't happen> */

      sal = sals.sals[i];
      sal_fullname = (sal.symtab == NULL
		      ? NULL : symtab_to_fullname (sal.symtab));

      /* Find all matching breakpoints and add them to 'found'.  */
      ALL_BREAKPOINTS (b)
	{
	  int match = 0;
	  /* Are we going to delete b?  */
	  if (b->type != bp_none && !is_watchpoint (b))
	    {
	      struct bp_location *loc = b->loc;
	      for (; loc; loc = loc->next)
		{
		  /* If the user specified file:line, don't allow a PC
		     match.  This matches historical gdb behavior.  */
		  int pc_match = (!sal.explicit_line
				  && sal.pc
				  && (loc->pspace == sal.pspace)
				  && (loc->address == sal.pc)
				  && (!section_is_overlay (loc->section)
				      || loc->section == sal.section));
		  int line_match = 0;

		  if ((default_match || sal.explicit_line)
		      && loc->symtab != NULL
		      && sal_fullname != NULL
		      && sal.pspace == loc->pspace
		      && loc->line_number == sal.line
		      && filename_cmp (symtab_to_fullname (loc->symtab),
				       sal_fullname) == 0)
		    line_match = 1;

		  if (pc_match || line_match)
		    {
		      match = 1;
		      break;
		    }
		}
	    }

	  if (match)
	    VEC_safe_push(breakpoint_p, found, b);
	}
    }

  /* Now go thru the 'found' chain and delete them.  */
  if (VEC_empty(breakpoint_p, found))
    {
      if (arg)
	error (_("No breakpoint at %s."), arg);
      else
	error (_("No breakpoint at this line."));
    }

  /* Remove duplicates from the vec.  */
  qsort (VEC_address (breakpoint_p, found),
	 VEC_length (breakpoint_p, found),
	 sizeof (breakpoint_p),
	 compare_breakpoints);
  prev = VEC_index (breakpoint_p, found, 0);
  for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix)
    {
      if (b == prev)
	{
	  VEC_ordered_remove (breakpoint_p, found, ix);
	  --ix;
	}
    }

  if (VEC_length(breakpoint_p, found) > 1)
    from_tty = 1;	/* Always report if deleted more than one.  */
  if (from_tty)
    {
      if (VEC_length(breakpoint_p, found) == 1)
	printf_unfiltered (_("Deleted breakpoint "));
      else
	printf_unfiltered (_("Deleted breakpoints "));
    }

  for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++)
    {
      if (from_tty)
	printf_unfiltered ("%d ", b->number);
      delete_breakpoint (b);
    }
  if (from_tty)
    putchar_unfiltered ('\n');

  do_cleanups (cleanups);
}

/* Delete breakpoint in BS if they are `delete' breakpoints and
   all breakpoints that are marked for deletion, whether hit or not.
   This is called after any breakpoint is hit, or after errors.  */

void
breakpoint_auto_delete (bpstat bs)
{
  struct breakpoint *b, *b_tmp;

  for (; bs; bs = bs->next)
    if (bs->breakpoint_at
	&& bs->breakpoint_at->disposition == disp_del
	&& bs->stop)
      delete_breakpoint (bs->breakpoint_at);

  ALL_BREAKPOINTS_SAFE (b, b_tmp)
  {
    if (b->disposition == disp_del_at_next_stop)
      delete_breakpoint (b);
  }
}

/* A comparison function for bp_location AP and BP being interfaced to
   qsort.  Sort elements primarily by their ADDRESS (no matter what
   does breakpoint_address_is_meaningful say for its OWNER),
   secondarily by ordering first permanent elements and
   terciarily just ensuring the array is sorted stable way despite
   qsort being an unstable algorithm.  */

static int
bp_location_compare (const void *ap, const void *bp)
{
  const struct bp_location *a = *(const struct bp_location **) ap;
  const struct bp_location *b = *(const struct bp_location **) bp;

  if (a->address != b->address)
    return (a->address > b->address) - (a->address < b->address);

  /* Sort locations at the same address by their pspace number, keeping
     locations of the same inferior (in a multi-inferior environment)
     grouped.  */

  if (a->pspace->num != b->pspace->num)
    return ((a->pspace->num > b->pspace->num)
	    - (a->pspace->num < b->pspace->num));

  /* Sort permanent breakpoints first.  */
  if (a->permanent != b->permanent)
    return (a->permanent < b->permanent) - (a->permanent > b->permanent);

  /* Make the internal GDB representation stable across GDB runs
     where A and B memory inside GDB can differ.  Breakpoint locations of
     the same type at the same address can be sorted in arbitrary order.  */

  if (a->owner->number != b->owner->number)
    return ((a->owner->number > b->owner->number)
	    - (a->owner->number < b->owner->number));

  return (a > b) - (a < b);
}

/* Set bp_location_placed_address_before_address_max and
   bp_location_shadow_len_after_address_max according to the current
   content of the bp_location array.  */

static void
bp_location_target_extensions_update (void)
{
  struct bp_location *bl, **blp_tmp;

  bp_location_placed_address_before_address_max = 0;
  bp_location_shadow_len_after_address_max = 0;

  ALL_BP_LOCATIONS (bl, blp_tmp)
    {
      CORE_ADDR start, end, addr;

      if (!bp_location_has_shadow (bl))
	continue;

      start = bl->target_info.placed_address;
      end = start + bl->target_info.shadow_len;

      gdb_assert (bl->address >= start);
      addr = bl->address - start;
      if (addr > bp_location_placed_address_before_address_max)
	bp_location_placed_address_before_address_max = addr;

      /* Zero SHADOW_LEN would not pass bp_location_has_shadow.  */

      gdb_assert (bl->address < end);
      addr = end - bl->address;
      if (addr > bp_location_shadow_len_after_address_max)
	bp_location_shadow_len_after_address_max = addr;
    }
}

/* Download tracepoint locations if they haven't been.  */

static void
download_tracepoint_locations (void)
{
  struct breakpoint *b;
  struct cleanup *old_chain;
  enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN;

  old_chain = save_current_space_and_thread ();

  ALL_TRACEPOINTS (b)
    {
      struct bp_location *bl;
      struct tracepoint *t;
      int bp_location_downloaded = 0;

      if ((b->type == bp_fast_tracepoint
	   ? !may_insert_fast_tracepoints
	   : !may_insert_tracepoints))
	continue;

      if (can_download_tracepoint == TRIBOOL_UNKNOWN)
	{
	  if (target_can_download_tracepoint ())
	    can_download_tracepoint = TRIBOOL_TRUE;
	  else
	    can_download_tracepoint = TRIBOOL_FALSE;
	}

      if (can_download_tracepoint == TRIBOOL_FALSE)
	break;

      for (bl = b->loc; bl; bl = bl->next)
	{
	  /* In tracepoint, locations are _never_ duplicated, so
	     should_be_inserted is equivalent to
	     unduplicated_should_be_inserted.  */
	  if (!should_be_inserted (bl) || bl->inserted)
	    continue;

	  switch_to_program_space_and_thread (bl->pspace);

	  target_download_tracepoint (bl);

	  bl->inserted = 1;
	  bp_location_downloaded = 1;
	}
      t = (struct tracepoint *) b;
      t->number_on_target = b->number;
      if (bp_location_downloaded)
	observer_notify_breakpoint_modified (b);
    }

  do_cleanups (old_chain);
}

/* Swap the insertion/duplication state between two locations.  */

static void
swap_insertion (struct bp_location *left, struct bp_location *right)
{
  const int left_inserted = left->inserted;
  const int left_duplicate = left->duplicate;
  const int left_needs_update = left->needs_update;
  const struct bp_target_info left_target_info = left->target_info;

  /* Locations of tracepoints can never be duplicated.  */
  if (is_tracepoint (left->owner))
    gdb_assert (!left->duplicate);
  if (is_tracepoint (right->owner))
    gdb_assert (!right->duplicate);

  left->inserted = right->inserted;
  left->duplicate = right->duplicate;
  left->needs_update = right->needs_update;
  left->target_info = right->target_info;
  right->inserted = left_inserted;
  right->duplicate = left_duplicate;
  right->needs_update = left_needs_update;
  right->target_info = left_target_info;
}

/* Force the re-insertion of the locations at ADDRESS.  This is called
   once a new/deleted/modified duplicate location is found and we are evaluating
   conditions on the target's side.  Such conditions need to be updated on
   the target.  */

static void
force_breakpoint_reinsertion (struct bp_location *bl)
{
  struct bp_location **locp = NULL, **loc2p;
  struct bp_location *loc;
  CORE_ADDR address = 0;
  int pspace_num;

  address = bl->address;
  pspace_num = bl->pspace->num;

  /* This is only meaningful if the target is
     evaluating conditions and if the user has
     opted for condition evaluation on the target's
     side.  */
  if (gdb_evaluates_breakpoint_condition_p ()
      || !target_supports_evaluation_of_breakpoint_conditions ())
    return;

  /* Flag all breakpoint locations with this address and
     the same program space as the location
     as "its condition has changed".  We need to
     update the conditions on the target's side.  */
  ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address)
    {
      loc = *loc2p;

      if (!is_breakpoint (loc->owner)
	  || pspace_num != loc->pspace->num)
	continue;

      /* Flag the location appropriately.  We use a different state to
	 let everyone know that we already updated the set of locations
	 with addr bl->address and program space bl->pspace.  This is so
	 we don't have to keep calling these functions just to mark locations
	 that have already been marked.  */
      loc->condition_changed = condition_updated;

      /* Free the agent expression bytecode as well.  We will compute
	 it later on.  */
      loc->cond_bytecode.reset ();
    }
}
/* Called whether new breakpoints are created, or existing breakpoints
   deleted, to update the global location list and recompute which
   locations are duplicate of which.

   The INSERT_MODE flag determines whether locations may not, may, or
   shall be inserted now.  See 'enum ugll_insert_mode' for more
   info.  */

static void
update_global_location_list (enum ugll_insert_mode insert_mode)
{
  struct breakpoint *b;
  struct bp_location **locp, *loc;
  struct cleanup *cleanups;
  /* Last breakpoint location address that was marked for update.  */
  CORE_ADDR last_addr = 0;
  /* Last breakpoint location program space that was marked for update.  */
  int last_pspace_num = -1;

  /* Used in the duplicates detection below.  When iterating over all
     bp_locations, points to the first bp_location of a given address.
     Breakpoints and watchpoints of different types are never
     duplicates of each other.  Keep one pointer for each type of
     breakpoint/watchpoint, so we only need to loop over all locations
     once.  */
  struct bp_location *bp_loc_first;  /* breakpoint */
  struct bp_location *wp_loc_first;  /* hardware watchpoint */
  struct bp_location *awp_loc_first; /* access watchpoint */
  struct bp_location *rwp_loc_first; /* read watchpoint */

  /* Saved former bp_location array which we compare against the newly
     built bp_location from the current state of ALL_BREAKPOINTS.  */
  struct bp_location **old_location, **old_locp;
  unsigned old_location_count;

  old_location = bp_location;
  old_location_count = bp_location_count;
  bp_location = NULL;
  bp_location_count = 0;
  cleanups = make_cleanup (xfree, old_location);

  ALL_BREAKPOINTS (b)
    for (loc = b->loc; loc; loc = loc->next)
      bp_location_count++;

  bp_location = XNEWVEC (struct bp_location *, bp_location_count);
  locp = bp_location;
  ALL_BREAKPOINTS (b)
    for (loc = b->loc; loc; loc = loc->next)
      *locp++ = loc;
  qsort (bp_location, bp_location_count, sizeof (*bp_location),
	 bp_location_compare);

  bp_location_target_extensions_update ();

  /* Identify bp_location instances that are no longer present in the
     new list, and therefore should be freed.  Note that it's not
     necessary that those locations should be removed from inferior --
     if there's another location at the same address (previously
     marked as duplicate), we don't need to remove/insert the
     location.
     
     LOCP is kept in sync with OLD_LOCP, each pointing to the current
     and former bp_location array state respectively.  */

  locp = bp_location;
  for (old_locp = old_location; old_locp < old_location + old_location_count;
       old_locp++)
    {
      struct bp_location *old_loc = *old_locp;
      struct bp_location **loc2p;

      /* Tells if 'old_loc' is found among the new locations.  If
	 not, we have to free it.  */
      int found_object = 0;
      /* Tells if the location should remain inserted in the target.  */
      int keep_in_target = 0;
      int removed = 0;

      /* Skip LOCP entries which will definitely never be needed.
	 Stop either at or being the one matching OLD_LOC.  */
      while (locp < bp_location + bp_location_count
	     && (*locp)->address < old_loc->address)
	locp++;

      for (loc2p = locp;
	   (loc2p < bp_location + bp_location_count
	    && (*loc2p)->address == old_loc->address);
	   loc2p++)
	{
	  /* Check if this is a new/duplicated location or a duplicated
	     location that had its condition modified.  If so, we want to send
	     its condition to the target if evaluation of conditions is taking
	     place there.  */
	  if ((*loc2p)->condition_changed == condition_modified
	      && (last_addr != old_loc->address
		  || last_pspace_num != old_loc->pspace->num))
	    {
	      force_breakpoint_reinsertion (*loc2p);
	      last_pspace_num = old_loc->pspace->num;
	    }

	  if (*loc2p == old_loc)
	    found_object = 1;
	}

      /* We have already handled this address, update it so that we don't
	 have to go through updates again.  */
      last_addr = old_loc->address;

      /* Target-side condition evaluation: Handle deleted locations.  */
      if (!found_object)
	force_breakpoint_reinsertion (old_loc);

      /* If this location is no longer present, and inserted, look if
	 there's maybe a new location at the same address.  If so,
	 mark that one inserted, and don't remove this one.  This is
	 needed so that we don't have a time window where a breakpoint
	 at certain location is not inserted.  */

      if (old_loc->inserted)
	{
	  /* If the location is inserted now, we might have to remove
	     it.  */

	  if (found_object && should_be_inserted (old_loc))
	    {
	      /* The location is still present in the location list,
		 and still should be inserted.  Don't do anything.  */
	      keep_in_target = 1;
	    }
	  else
	    {
	      /* This location still exists, but it won't be kept in the
		 target since it may have been disabled.  We proceed to
		 remove its target-side condition.  */

	      /* The location is either no longer present, or got
		 disabled.  See if there's another location at the
		 same address, in which case we don't need to remove
		 this one from the target.  */

	      /* OLD_LOC comes from existing struct breakpoint.  */
	      if (breakpoint_address_is_meaningful (old_loc->owner))
		{
		  for (loc2p = locp;
		       (loc2p < bp_location + bp_location_count
			&& (*loc2p)->address == old_loc->address);
		       loc2p++)
		    {
		      struct bp_location *loc2 = *loc2p;

		      if (breakpoint_locations_match (loc2, old_loc))
			{
			  /* Read watchpoint locations are switched to
			     access watchpoints, if the former are not
			     supported, but the latter are.  */
			  if (is_hardware_watchpoint (old_loc->owner))
			    {
			      gdb_assert (is_hardware_watchpoint (loc2->owner));
			      loc2->watchpoint_type = old_loc->watchpoint_type;
			    }

			  /* loc2 is a duplicated location. We need to check
			     if it should be inserted in case it will be
			     unduplicated.  */
			  if (loc2 != old_loc
			      && unduplicated_should_be_inserted (loc2))
			    {
			      swap_insertion (old_loc, loc2);
			      keep_in_target = 1;
			      break;
			    }
			}
		    }
		}
	    }

	  if (!keep_in_target)
	    {
	      if (remove_breakpoint (old_loc))
		{
		  /* This is just about all we can do.  We could keep
		     this location on the global list, and try to
		     remove it next time, but there's no particular
		     reason why we will succeed next time.
		     
		     Note that at this point, old_loc->owner is still
		     valid, as delete_breakpoint frees the breakpoint
		     only after calling us.  */
		  printf_filtered (_("warning: Error removing "
				     "breakpoint %d\n"), 
				   old_loc->owner->number);
		}
	      removed = 1;
	    }
	}

      if (!found_object)
	{
	  if (removed && target_is_non_stop_p ()
	      && need_moribund_for_location_type (old_loc))
	    {
	      /* This location was removed from the target.  In
		 non-stop mode, a race condition is possible where
		 we've removed a breakpoint, but stop events for that
		 breakpoint are already queued and will arrive later.
		 We apply an heuristic to be able to distinguish such
		 SIGTRAPs from other random SIGTRAPs: we keep this
		 breakpoint location for a bit, and will retire it
		 after we see some number of events.  The theory here
		 is that reporting of events should, "on the average",
		 be fair, so after a while we'll see events from all
		 threads that have anything of interest, and no longer
		 need to keep this breakpoint location around.  We
		 don't hold locations forever so to reduce chances of
		 mistaking a non-breakpoint SIGTRAP for a breakpoint
		 SIGTRAP.

		 The heuristic failing can be disastrous on
		 decr_pc_after_break targets.

		 On decr_pc_after_break targets, like e.g., x86-linux,
		 if we fail to recognize a late breakpoint SIGTRAP,
		 because events_till_retirement has reached 0 too
		 soon, we'll fail to do the PC adjustment, and report
		 a random SIGTRAP to the user.  When the user resumes
		 the inferior, it will most likely immediately crash
		 with SIGILL/SIGBUS/SIGSEGV, or worse, get silently
		 corrupted, because of being resumed e.g., in the
		 middle of a multi-byte instruction, or skipped a
		 one-byte instruction.  This was actually seen happen
		 on native x86-linux, and should be less rare on
		 targets that do not support new thread events, like
		 remote, due to the heuristic depending on
		 thread_count.

		 Mistaking a random SIGTRAP for a breakpoint trap
		 causes similar symptoms (PC adjustment applied when
		 it shouldn't), but then again, playing with SIGTRAPs
		 behind the debugger's back is asking for trouble.

		 Since hardware watchpoint traps are always
		 distinguishable from other traps, so we don't need to
		 apply keep hardware watchpoint moribund locations
		 around.  We simply always ignore hardware watchpoint
		 traps we can no longer explain.  */

	      old_loc->events_till_retirement = 3 * (thread_count () + 1);
	      old_loc->owner = NULL;

	      VEC_safe_push (bp_location_p, moribund_locations, old_loc);
	    }
	  else
	    {
	      old_loc->owner = NULL;
	      decref_bp_location (&old_loc);
	    }
	}
    }

  /* Rescan breakpoints at the same address and section, marking the
     first one as "first" and any others as "duplicates".  This is so
     that the bpt instruction is only inserted once.  If we have a
     permanent breakpoint at the same place as BPT, make that one the
     official one, and the rest as duplicates.  Permanent breakpoints
     are sorted first for the same address.

     Do the same for hardware watchpoints, but also considering the
     watchpoint's type (regular/access/read) and length.  */

  bp_loc_first = NULL;
  wp_loc_first = NULL;
  awp_loc_first = NULL;
  rwp_loc_first = NULL;
  ALL_BP_LOCATIONS (loc, locp)
    {
      /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always
	 non-NULL.  */
      struct bp_location **loc_first_p;
      b = loc->owner;

      if (!unduplicated_should_be_inserted (loc)
	  || !breakpoint_address_is_meaningful (b)
	  /* Don't detect duplicate for tracepoint locations because they are
	   never duplicated.  See the comments in field `duplicate' of
	   `struct bp_location'.  */
	  || is_tracepoint (b))
	{
	  /* Clear the condition modification flag.  */
	  loc->condition_changed = condition_unchanged;
	  continue;
	}

      if (b->type == bp_hardware_watchpoint)
	loc_first_p = &wp_loc_first;
      else if (b->type == bp_read_watchpoint)
	loc_first_p = &rwp_loc_first;
      else if (b->type == bp_access_watchpoint)
	loc_first_p = &awp_loc_first;
      else
	loc_first_p = &bp_loc_first;

      if (*loc_first_p == NULL
	  || (overlay_debugging && loc->section != (*loc_first_p)->section)
	  || !breakpoint_locations_match (loc, *loc_first_p))
	{
	  *loc_first_p = loc;
	  loc->duplicate = 0;

	  if (is_breakpoint (loc->owner) && loc->condition_changed)
	    {
	      loc->needs_update = 1;
	      /* Clear the condition modification flag.  */
	      loc->condition_changed = condition_unchanged;
	    }
	  continue;
	}


      /* This and the above ensure the invariant that the first location
	 is not duplicated, and is the inserted one.
	 All following are marked as duplicated, and are not inserted.  */
      if (loc->inserted)
	swap_insertion (loc, *loc_first_p);
      loc->duplicate = 1;

      /* Clear the condition modification flag.  */
      loc->condition_changed = condition_unchanged;
    }

  if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ())
    {
      if (insert_mode != UGLL_DONT_INSERT)
	insert_breakpoint_locations ();
      else
	{
	  /* Even though the caller told us to not insert new
	     locations, we may still need to update conditions on the
	     target's side of breakpoints that were already inserted
	     if the target is evaluating breakpoint conditions.  We
	     only update conditions for locations that are marked
	     "needs_update".  */
	  update_inserted_breakpoint_locations ();
	}
    }

  if (insert_mode != UGLL_DONT_INSERT)
    download_tracepoint_locations ();

  do_cleanups (cleanups);
}

void
breakpoint_retire_moribund (void)
{
  struct bp_location *loc;
  int ix;

  for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix)
    if (--(loc->events_till_retirement) == 0)
      {
	decref_bp_location (&loc);
	VEC_unordered_remove (bp_location_p, moribund_locations, ix);
	--ix;
      }
}

static void
update_global_location_list_nothrow (enum ugll_insert_mode insert_mode)
{

  TRY
    {
      update_global_location_list (insert_mode);
    }
  CATCH (e, RETURN_MASK_ERROR)
    {
    }
  END_CATCH
}

/* Clear BKP from a BPS.  */

static void
bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt)
{
  bpstat bs;

  for (bs = bps; bs; bs = bs->next)
    if (bs->breakpoint_at == bpt)
      {
	bs->breakpoint_at = NULL;
	bs->old_val = NULL;
	/* bs->commands will be freed later.  */
      }
}

/* Callback for iterate_over_threads.  */
static int
bpstat_remove_breakpoint_callback (struct thread_info *th, void *data)
{
  struct breakpoint *bpt = (struct breakpoint *) data;

  bpstat_remove_bp_location (th->control.stop_bpstat, bpt);
  return 0;
}

/* Helper for breakpoint and tracepoint breakpoint_ops->mention
   callbacks.  */

static void
say_where (struct breakpoint *b)
{
  struct value_print_options opts;

  get_user_print_options (&opts);

  /* i18n: cagney/2005-02-11: Below needs to be merged into a
     single string.  */
  if (b->loc == NULL)
    {
      /* For pending locations, the output differs slightly based
	 on b->extra_string.  If this is non-NULL, it contains either
	 a condition or dprintf arguments.  */
      if (b->extra_string == NULL)
	{
	  printf_filtered (_(" (%s) pending."),
			   event_location_to_string (b->location));
	}
      else if (b->type == bp_dprintf)
	{
	  printf_filtered (_(" (%s,%s) pending."),
			   event_location_to_string (b->location),
			   b->extra_string);
	}
      else
	{
	  printf_filtered (_(" (%s %s) pending."),
			   event_location_to_string (b->location),
			   b->extra_string);
	}
    }
  else
    {
      if (opts.addressprint || b->loc->symtab == NULL)
	{
	  printf_filtered (" at ");
	  fputs_filtered (paddress (b->loc->gdbarch, b->loc->address),
			  gdb_stdout);
	}
      if (b->loc->symtab != NULL)
	{
	  /* If there is a single location, we can print the location
	     more nicely.  */
	  if (b->loc->next == NULL)
	    printf_filtered (": file %s, line %d.",
			     symtab_to_filename_for_display (b->loc->symtab),
			     b->loc->line_number);
	  else
	    /* This is not ideal, but each location may have a
	       different file name, and this at least reflects the
	       real situation somewhat.  */
	    printf_filtered (": %s.",
			     event_location_to_string (b->location));
	}

      if (b->loc->next)
	{
	  struct bp_location *loc = b->loc;
	  int n = 0;
	  for (; loc; loc = loc->next)
	    ++n;
	  printf_filtered (" (%d locations)", n);
	}
    }
}

/* Default bp_location_ops methods.  */

static void
bp_location_dtor (struct bp_location *self)
{
  xfree (self->function_name);
}

static const struct bp_location_ops bp_location_ops =
{
  bp_location_dtor
};

/* Default breakpoint_ops methods all breakpoint_ops ultimately
   inherit from.  */

static void
base_breakpoint_dtor (struct breakpoint *self)
{
  decref_counted_command_line (&self->commands);
  xfree (self->cond_string);
  xfree (self->extra_string);
  xfree (self->filter);
  delete_event_location (self->location);
  delete_event_location (self->location_range_end);
}

static struct bp_location *
base_breakpoint_allocate_location (struct breakpoint *self)
{
  struct bp_location *loc;

  loc = new struct bp_location ();
  init_bp_location (loc, &bp_location_ops, self);
  return loc;
}

static void
base_breakpoint_re_set (struct breakpoint *b)
{
  /* Nothing to re-set. */
}

#define internal_error_pure_virtual_called() \
  gdb_assert_not_reached ("pure virtual function called")

static int
base_breakpoint_insert_location (struct bp_location *bl)
{
  internal_error_pure_virtual_called ();
}

static int
base_breakpoint_remove_location (struct bp_location *bl,
				 enum remove_bp_reason reason)
{
  internal_error_pure_virtual_called ();
}

static int
base_breakpoint_breakpoint_hit (const struct bp_location *bl,
				struct address_space *aspace,
				CORE_ADDR bp_addr,
				const struct target_waitstatus *ws)
{
  internal_error_pure_virtual_called ();
}

static void
base_breakpoint_check_status (bpstat bs)
{
  /* Always stop.   */
}

/* A "works_in_software_mode" breakpoint_ops method that just internal
   errors.  */

static int
base_breakpoint_works_in_software_mode (const struct breakpoint *b)
{
  internal_error_pure_virtual_called ();
}

/* A "resources_needed" breakpoint_ops method that just internal
   errors.  */

static int
base_breakpoint_resources_needed (const struct bp_location *bl)
{
  internal_error_pure_virtual_called ();
}

static enum print_stop_action
base_breakpoint_print_it (bpstat bs)
{
  internal_error_pure_virtual_called ();
}

static void
base_breakpoint_print_one_detail (const struct breakpoint *self,
				  struct ui_out *uiout)
{
  /* nothing */
}

static void
base_breakpoint_print_mention (struct breakpoint *b)
{
  internal_error_pure_virtual_called ();
}

static void
base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp)
{
  internal_error_pure_virtual_called ();
}

static void
base_breakpoint_create_sals_from_location
  (const struct event_location *location,
   struct linespec_result *canonical,
   enum bptype type_wanted)
{
  internal_error_pure_virtual_called ();
}

static void
base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch,
					struct linespec_result *c,
					char *cond_string,
					char *extra_string,
					enum bptype type_wanted,
					enum bpdisp disposition,
					int thread,
					int task, int ignore_count,
					const struct breakpoint_ops *o,
					int from_tty, int enabled,
					int internal, unsigned flags)
{
  internal_error_pure_virtual_called ();
}

static void
base_breakpoint_decode_location (struct breakpoint *b,
				 const struct event_location *location,
				 struct program_space *search_pspace,
				 struct symtabs_and_lines *sals)
{
  internal_error_pure_virtual_called ();
}

/* The default 'explains_signal' method.  */

static int
base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig)
{
  return 1;
}

/* The default "after_condition_true" method.  */

static void
base_breakpoint_after_condition_true (struct bpstats *bs)
{
  /* Nothing to do.   */
}

struct breakpoint_ops base_breakpoint_ops =
{
  base_breakpoint_dtor,
  base_breakpoint_allocate_location,
  base_breakpoint_re_set,
  base_breakpoint_insert_location,
  base_breakpoint_remove_location,
  base_breakpoint_breakpoint_hit,
  base_breakpoint_check_status,
  base_breakpoint_resources_needed,
  base_breakpoint_works_in_software_mode,
  base_breakpoint_print_it,
  NULL,
  base_breakpoint_print_one_detail,
  base_breakpoint_print_mention,
  base_breakpoint_print_recreate,
  base_breakpoint_create_sals_from_location,
  base_breakpoint_create_breakpoints_sal,
  base_breakpoint_decode_location,
  base_breakpoint_explains_signal,
  base_breakpoint_after_condition_true,
};

/* Default breakpoint_ops methods.  */

static void
bkpt_re_set (struct breakpoint *b)
{
  /* FIXME: is this still reachable?  */
  if (breakpoint_event_location_empty_p (b))
    {
      /* Anything without a location can't be re-set.  */
      delete_breakpoint (b);
      return;
    }

  breakpoint_re_set_default (b);
}

static int
bkpt_insert_location (struct bp_location *bl)
{
  CORE_ADDR addr = bl->target_info.reqstd_address;

  bl->target_info.kind = breakpoint_kind (bl, &addr);
  bl->target_info.placed_address = addr;

  if (bl->loc_type == bp_loc_hardware_breakpoint)
    return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info);
  else
    return target_insert_breakpoint (bl->gdbarch, &bl->target_info);
}

static int
bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason)
{
  if (bl->loc_type == bp_loc_hardware_breakpoint)
    return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info);
  else
    return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason);
}

static int
bkpt_breakpoint_hit (const struct bp_location *bl,
		     struct address_space *aspace, CORE_ADDR bp_addr,
		     const struct target_waitstatus *ws)
{
  if (ws->kind != TARGET_WAITKIND_STOPPED
      || ws->value.sig != GDB_SIGNAL_TRAP)
    return 0;

  if (!breakpoint_address_match (bl->pspace->aspace, bl->address,
				 aspace, bp_addr))
    return 0;

  if (overlay_debugging		/* unmapped overlay section */
      && section_is_overlay (bl->section)
      && !section_is_mapped (bl->section))
    return 0;

  return 1;
}

static int
dprintf_breakpoint_hit (const struct bp_location *bl,
			struct address_space *aspace, CORE_ADDR bp_addr,
			const struct target_waitstatus *ws)
{
  if (dprintf_style == dprintf_style_agent
      && target_can_run_breakpoint_commands ())
    {
      /* An agent-style dprintf never causes a stop.  If we see a trap
	 for this address it must be for a breakpoint that happens to
	 be set at the same address.  */
      return 0;
    }

  return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws);
}

static int
bkpt_resources_needed (const struct bp_location *bl)
{
  gdb_assert (bl->owner->type == bp_hardware_breakpoint);

  return 1;
}

static enum print_stop_action
bkpt_print_it (bpstat bs)
{
  struct breakpoint *b;
  const struct bp_location *bl;
  int bp_temp;
  struct ui_out *uiout = current_uiout;

  gdb_assert (bs->bp_location_at != NULL);

  bl = bs->bp_location_at;
  b = bs->breakpoint_at;

  bp_temp = b->disposition == disp_del;
  if (bl->address != bl->requested_address)
    breakpoint_adjustment_warning (bl->requested_address,
				   bl->address,
				   b->number, 1);
  annotate_breakpoint (b->number);
  maybe_print_thread_hit_breakpoint (uiout);

  if (bp_temp)
    ui_out_text (uiout, "Temporary breakpoint ");
  else
    ui_out_text (uiout, "Breakpoint ");
  if (ui_out_is_mi_like_p (uiout))
    {
      ui_out_field_string (uiout, "reason",
			   async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT));
      ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition));
    }
  ui_out_field_int (uiout, "bkptno", b->number);
  ui_out_text (uiout, ", ");

  return PRINT_SRC_AND_LOC;
}

static void
bkpt_print_mention (struct breakpoint *b)
{
  if (ui_out_is_mi_like_p (current_uiout))
    return;

  switch (b->type)
    {
    case bp_breakpoint:
    case bp_gnu_ifunc_resolver:
      if (b->disposition == disp_del)
	printf_filtered (_("Temporary breakpoint"));
      else
	printf_filtered (_("Breakpoint"));
      printf_filtered (_(" %d"), b->number);
      if (b->type == bp_gnu_ifunc_resolver)
	printf_filtered (_(" at gnu-indirect-function resolver"));
      break;
    case bp_hardware_breakpoint:
      printf_filtered (_("Hardware assisted breakpoint %d"), b->number);
      break;
    case bp_dprintf:
      printf_filtered (_("Dprintf %d"), b->number);
      break;
    }

  say_where (b);
}

static void
bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp)
{
  if (tp->type == bp_breakpoint && tp->disposition == disp_del)
    fprintf_unfiltered (fp, "tbreak");
  else if (tp->type == bp_breakpoint)
    fprintf_unfiltered (fp, "break");
  else if (tp->type == bp_hardware_breakpoint
	   && tp->disposition == disp_del)
    fprintf_unfiltered (fp, "thbreak");
  else if (tp->type == bp_hardware_breakpoint)
    fprintf_unfiltered (fp, "hbreak");
  else
    internal_error (__FILE__, __LINE__,
		    _("unhandled breakpoint type %d"), (int) tp->type);

  fprintf_unfiltered (fp, " %s",
		      event_location_to_string (tp->location));

  /* Print out extra_string if this breakpoint is pending.  It might
     contain, for example, conditions that were set by the user.  */
  if (tp->loc == NULL && tp->extra_string != NULL)
    fprintf_unfiltered (fp, " %s", tp->extra_string);

  print_recreate_thread (tp, fp);
}

static void
bkpt_create_sals_from_location (const struct event_location *location,
				struct linespec_result *canonical,
				enum bptype type_wanted)
{
  create_sals_from_location_default (location, canonical, type_wanted);
}

static void
bkpt_create_breakpoints_sal (struct gdbarch *gdbarch,
			     struct linespec_result *canonical,
			     char *cond_string,
			     char *extra_string,
			     enum bptype type_wanted,
			     enum bpdisp disposition,
			     int thread,
			     int task, int ignore_count,
			     const struct breakpoint_ops *ops,
			     int from_tty, int enabled,
			     int internal, unsigned flags)
{
  create_breakpoints_sal_default (gdbarch, canonical,
				  cond_string, extra_string,
				  type_wanted,
				  disposition, thread, task,
				  ignore_count, ops, from_tty,
				  enabled, internal, flags);
}

static void
bkpt_decode_location (struct breakpoint *b,
		      const struct event_location *location,
		      struct program_space *search_pspace,
		      struct symtabs_and_lines *sals)
{
  decode_location_default (b, location, search_pspace, sals);
}

/* Virtual table for internal breakpoints.  */

static void
internal_bkpt_re_set (struct breakpoint *b)
{
  switch (b->type)
    {
      /* Delete overlay event and longjmp master breakpoints; they
	 will be reset later by breakpoint_re_set.  */
    case bp_overlay_event:
    case bp_longjmp_master:
    case bp_std_terminate_master:
    case bp_exception_master:
      delete_breakpoint (b);
      break;

      /* This breakpoint is special, it's set up when the inferior
         starts and we really don't want to touch it.  */
    case bp_shlib_event:

      /* Like bp_shlib_event, this breakpoint type is special.  Once
	 it is set up, we do not want to touch it.  */
    case bp_thread_event:
      break;
    }
}

static void
internal_bkpt_check_status (bpstat bs)
{
  if (bs->breakpoint_at->type == bp_shlib_event)
    {
      /* If requested, stop when the dynamic linker notifies GDB of
	 events.  This allows the user to get control and place
	 breakpoints in initializer routines for dynamically loaded
	 objects (among other things).  */
      bs->stop = stop_on_solib_events;
      bs->print = stop_on_solib_events;
    }
  else
    bs->stop = 0;
}

static enum print_stop_action
internal_bkpt_print_it (bpstat bs)
{
  struct breakpoint *b;

  b = bs->breakpoint_at;

  switch (b->type)
    {
    case bp_shlib_event:
      /* Did we stop because the user set the stop_on_solib_events
	 variable?  (If so, we report this as a generic, "Stopped due
	 to shlib event" message.) */
      print_solib_event (0);
      break;

    case bp_thread_event:
      /* Not sure how we will get here.
	 GDB should not stop for these breakpoints.  */
      printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n"));
      break;

    case bp_overlay_event:
      /* By analogy with the thread event, GDB should not stop for these.  */
      printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n"));
      break;

    case bp_longjmp_master:
      /* These should never be enabled.  */
      printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n"));
      break;

    case bp_std_terminate_master:
      /* These should never be enabled.  */
      printf_filtered (_("std::terminate Master Breakpoint: "
			 "gdb should not stop!\n"));
      break;

    case bp_exception_master:
      /* These should never be enabled.  */
      printf_filtered (_("Exception Master Breakpoint: "
			 "gdb should not stop!\n"));
      break;
    }

  return PRINT_NOTHING;
}

static void
internal_bkpt_print_mention (struct breakpoint *b)
{
  /* Nothing to mention.  These breakpoints are internal.  */
}

/* Virtual table for momentary breakpoints  */

static void
momentary_bkpt_re_set (struct breakpoint *b)
{
  /* Keep temporary breakpoints, which can be encountered when we step
     over a dlopen call and solib_add is resetting the breakpoints.
     Otherwise these should have been blown away via the cleanup chain
     or by breakpoint_init_inferior when we rerun the executable.  */
}

static void
momentary_bkpt_check_status (bpstat bs)
{
  /* Nothing.  The point of these breakpoints is causing a stop.  */
}

static enum print_stop_action
momentary_bkpt_print_it (bpstat bs)
{
  return PRINT_UNKNOWN;
}

static void
momentary_bkpt_print_mention (struct breakpoint *b)
{
  /* Nothing to mention.  These breakpoints are internal.  */
}

/* Ensure INITIATING_FRAME is cleared when no such breakpoint exists.

   It gets cleared already on the removal of the first one of such placed
   breakpoints.  This is OK as they get all removed altogether.  */

static void
longjmp_bkpt_dtor (struct breakpoint *self)
{
  struct thread_info *tp = find_thread_global_id (self->thread);

  if (tp)
    tp->initiating_frame = null_frame_id;

  momentary_breakpoint_ops.dtor (self);
}

/* Specific methods for probe breakpoints.  */

static int
bkpt_probe_insert_location (struct bp_location *bl)
{
  int v = bkpt_insert_location (bl);

  if (v == 0)
    {
      /* The insertion was successful, now let's set the probe's semaphore
	 if needed.  */
      if (bl->probe.probe->pops->set_semaphore != NULL)
	bl->probe.probe->pops->set_semaphore (bl->probe.probe,
					      bl->probe.objfile,
					      bl->gdbarch);
    }

  return v;
}

static int
bkpt_probe_remove_location (struct bp_location *bl,
			    enum remove_bp_reason reason)
{
  /* Let's clear the semaphore before removing the location.  */
  if (bl->probe.probe->pops->clear_semaphore != NULL)
    bl->probe.probe->pops->clear_semaphore (bl->probe.probe,
					    bl->probe.objfile,
					    bl->gdbarch);

  return bkpt_remove_location (bl, reason);
}

static void
bkpt_probe_create_sals_from_location (const struct event_location *location,
				      struct linespec_result *canonical,
				      enum bptype type_wanted)
{
  struct linespec_sals lsal;

  lsal.sals = parse_probes (location, NULL, canonical);
  lsal.canonical = xstrdup (event_location_to_string (canonical->location));
  VEC_safe_push (linespec_sals, canonical->sals, &lsal);
}

static void
bkpt_probe_decode_location (struct breakpoint *b,
			    const struct event_location *location,
			    struct program_space *search_pspace,
			    struct symtabs_and_lines *sals)
{
  *sals = parse_probes (location, search_pspace, NULL);
  if (!sals->sals)
    error (_("probe not found"));
}

/* The breakpoint_ops structure to be used in tracepoints.  */

static void
tracepoint_re_set (struct breakpoint *b)
{
  breakpoint_re_set_default (b);
}

static int
tracepoint_breakpoint_hit (const struct bp_location *bl,
			   struct address_space *aspace, CORE_ADDR bp_addr,
			   const struct target_waitstatus *ws)
{
  /* By definition, the inferior does not report stops at
     tracepoints.  */
  return 0;
}

static void
tracepoint_print_one_detail (const struct breakpoint *self,
			     struct ui_out *uiout)
{
  struct tracepoint *tp = (struct tracepoint *) self;
  if (tp->static_trace_marker_id)
    {
      gdb_assert (self->type == bp_static_tracepoint);

      ui_out_text (uiout, "\tmarker id is ");
      ui_out_field_string (uiout, "static-tracepoint-marker-string-id",
			   tp->static_trace_marker_id);
      ui_out_text (uiout, "\n");
    }
}

static void
tracepoint_print_mention (struct breakpoint *b)
{
  if (ui_out_is_mi_like_p (current_uiout))
    return;

  switch (b->type)
    {
    case bp_tracepoint:
      printf_filtered (_("Tracepoint"));
      printf_filtered (_(" %d"), b->number);
      break;
    case bp_fast_tracepoint:
      printf_filtered (_("Fast tracepoint"));
      printf_filtered (_(" %d"), b->number);
      break;
    case bp_static_tracepoint:
      printf_filtered (_("Static tracepoint"));
      printf_filtered (_(" %d"), b->number);
      break;
    default:
      internal_error (__FILE__, __LINE__,
		      _("unhandled tracepoint type %d"), (int) b->type);
    }

  say_where (b);
}

static void
tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp)
{
  struct tracepoint *tp = (struct tracepoint *) self;

  if (self->type == bp_fast_tracepoint)
    fprintf_unfiltered (fp, "ftrace");
  else if (self->type == bp_static_tracepoint)
    fprintf_unfiltered (fp, "strace");
  else if (self->type == bp_tracepoint)
    fprintf_unfiltered (fp, "trace");
  else
    internal_error (__FILE__, __LINE__,
		    _("unhandled tracepoint type %d"), (int) self->type);

  fprintf_unfiltered (fp, " %s",
		      event_location_to_string (self->location));
  print_recreate_thread (self, fp);

  if (tp->pass_count)
    fprintf_unfiltered (fp, "  passcount %d\n", tp->pass_count);
}

static void
tracepoint_create_sals_from_location (const struct event_location *location,
				      struct linespec_result *canonical,
				      enum bptype type_wanted)
{
  create_sals_from_location_default (location, canonical, type_wanted);
}

static void
tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch,
				   struct linespec_result *canonical,
				   char *cond_string,
				   char *extra_string,
				   enum bptype type_wanted,
				   enum bpdisp disposition,
				   int thread,
				   int task, int ignore_count,
				   const struct breakpoint_ops *ops,
				   int from_tty, int enabled,
				   int internal, unsigned flags)
{
  create_breakpoints_sal_default (gdbarch, canonical,
				  cond_string, extra_string,
				  type_wanted,
				  disposition, thread, task,
				  ignore_count, ops, from_tty,
				  enabled, internal, flags);
}

static void
tracepoint_decode_location (struct breakpoint *b,
			    const struct event_location *location,
			    struct program_space *search_pspace,
			    struct symtabs_and_lines *sals)
{
  decode_location_default (b, location, search_pspace, sals);
}

struct breakpoint_ops tracepoint_breakpoint_ops;

/* The breakpoint_ops structure to be use on tracepoints placed in a
   static probe.  */

static void
tracepoint_probe_create_sals_from_location
  (const struct event_location *location,
   struct linespec_result *canonical,
   enum bptype type_wanted)
{
  /* We use the same method for breakpoint on probes.  */
  bkpt_probe_create_sals_from_location (location, canonical, type_wanted);
}

static void
tracepoint_probe_decode_location (struct breakpoint *b,
				  const struct event_location *location,
				  struct program_space *search_pspace,
				  struct symtabs_and_lines *sals)
{
  /* We use the same method for breakpoint on probes.  */
  bkpt_probe_decode_location (b, location, search_pspace, sals);
}

static struct breakpoint_ops tracepoint_probe_breakpoint_ops;

/* Dprintf breakpoint_ops methods.  */

static void
dprintf_re_set (struct breakpoint *b)
{
  breakpoint_re_set_default (b);

  /* extra_string should never be non-NULL for dprintf.  */
  gdb_assert (b->extra_string != NULL);

  /* 1 - connect to target 1, that can run breakpoint commands.
     2 - create a dprintf, which resolves fine.
     3 - disconnect from target 1
     4 - connect to target 2, that can NOT run breakpoint commands.

     After steps #3/#4, you'll want the dprintf command list to
     be updated, because target 1 and 2 may well return different
     answers for target_can_run_breakpoint_commands().
     Given absence of finer grained resetting, we get to do
     it all the time.  */
  if (b->extra_string != NULL)
    update_dprintf_command_list (b);
}

/* Implement the "print_recreate" breakpoint_ops method for dprintf.  */

static void
dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp)
{
  fprintf_unfiltered (fp, "dprintf %s,%s",
		      event_location_to_string (tp->location),
		      tp->extra_string);
  print_recreate_thread (tp, fp);
}

/* Implement the "after_condition_true" breakpoint_ops method for
   dprintf.

   dprintf's are implemented with regular commands in their command
   list, but we run the commands here instead of before presenting the
   stop to the user, as dprintf's don't actually cause a stop.  This
   also makes it so that the commands of multiple dprintfs at the same
   address are all handled.  */

static void
dprintf_after_condition_true (struct bpstats *bs)
{
  struct cleanup *old_chain;
  struct bpstats tmp_bs = { NULL };
  struct bpstats *tmp_bs_p = &tmp_bs;

  /* dprintf's never cause a stop.  This wasn't set in the
     check_status hook instead because that would make the dprintf's
     condition not be evaluated.  */
  bs->stop = 0;

  /* Run the command list here.  Take ownership of it instead of
     copying.  We never want these commands to run later in
     bpstat_do_actions, if a breakpoint that causes a stop happens to
     be set at same address as this dprintf, or even if running the
     commands here throws.  */
  tmp_bs.commands = bs->commands;
  bs->commands = NULL;
  old_chain = make_cleanup_decref_counted_command_line (&tmp_bs.commands);

  bpstat_do_actions_1 (&tmp_bs_p);

  /* 'tmp_bs.commands' will usually be NULL by now, but
     bpstat_do_actions_1 may return early without processing the whole
     list.  */
  do_cleanups (old_chain);
}

/* The breakpoint_ops structure to be used on static tracepoints with
   markers (`-m').  */

static void
strace_marker_create_sals_from_location (const struct event_location *location,
					 struct linespec_result *canonical,
					 enum bptype type_wanted)
{
  struct linespec_sals lsal;
  const char *arg_start, *arg;
  char *str;
  struct cleanup *cleanup;

  arg = arg_start = get_linespec_location (location);
  lsal.sals = decode_static_tracepoint_spec (&arg);

  str = savestring (arg_start, arg - arg_start);
  cleanup = make_cleanup (xfree, str);
  canonical->location = new_linespec_location (&str);
  do_cleanups (cleanup);

  lsal.canonical = xstrdup (event_location_to_string (canonical->location));
  VEC_safe_push (linespec_sals, canonical->sals, &lsal);
}

static void
strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch,
				      struct linespec_result *canonical,
				      char *cond_string,
				      char *extra_string,
				      enum bptype type_wanted,
				      enum bpdisp disposition,
				      int thread,
				      int task, int ignore_count,
				      const struct breakpoint_ops *ops,
				      int from_tty, int enabled,
				      int internal, unsigned flags)
{
  int i;
  struct linespec_sals *lsal = VEC_index (linespec_sals,
					  canonical->sals, 0);

  /* If the user is creating a static tracepoint by marker id
     (strace -m MARKER_ID), then store the sals index, so that
     breakpoint_re_set can try to match up which of the newly
     found markers corresponds to this one, and, don't try to
     expand multiple locations for each sal, given than SALS
     already should contain all sals for MARKER_ID.  */

  for (i = 0; i < lsal->sals.nelts; ++i)
    {
      struct symtabs_and_lines expanded;
      struct tracepoint *tp;
      struct cleanup *old_chain;
      struct event_location *location;

      expanded.nelts = 1;
      expanded.sals = &lsal->sals.sals[i];

      location = copy_event_location (canonical->location);
      old_chain = make_cleanup_delete_event_location (location);

      tp = new tracepoint ();
      init_breakpoint_sal (&tp->base, gdbarch, expanded,
			   location, NULL,
			   cond_string, extra_string,
			   type_wanted, disposition,
			   thread, task, ignore_count, ops,
			   from_tty, enabled, internal, flags,
			   canonical->special_display);
      /* Given that its possible to have multiple markers with
	 the same string id, if the user is creating a static
	 tracepoint by marker id ("strace -m MARKER_ID"), then
	 store the sals index, so that breakpoint_re_set can
	 try to match up which of the newly found markers
	 corresponds to this one  */
      tp->static_trace_marker_id_idx = i;

      install_breakpoint (internal, &tp->base, 0);

      discard_cleanups (old_chain);
    }
}

static void
strace_marker_decode_location (struct breakpoint *b,
			       const struct event_location *location,
			       struct program_space *search_pspace,
			       struct symtabs_and_lines *sals)
{
  struct tracepoint *tp = (struct tracepoint *) b;
  const char *s = get_linespec_location (location);

  *sals = decode_static_tracepoint_spec (&s);
  if (sals->nelts > tp->static_trace_marker_id_idx)
    {
      sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx];
      sals->nelts = 1;
    }
  else
    error (_("marker %s not found"), tp->static_trace_marker_id);
}

static struct breakpoint_ops strace_marker_breakpoint_ops;

static int
strace_marker_p (struct breakpoint *b)
{
  return b->ops == &strace_marker_breakpoint_ops;
}

/* Delete a breakpoint and clean up all traces of it in the data
   structures.  */

void
delete_breakpoint (struct breakpoint *bpt)
{
  struct breakpoint *b;

  gdb_assert (bpt != NULL);

  /* Has this bp already been deleted?  This can happen because
     multiple lists can hold pointers to bp's.  bpstat lists are
     especial culprits.

     One example of this happening is a watchpoint's scope bp.  When
     the scope bp triggers, we notice that the watchpoint is out of
     scope, and delete it.  We also delete its scope bp.  But the
     scope bp is marked "auto-deleting", and is already on a bpstat.
     That bpstat is then checked for auto-deleting bp's, which are
     deleted.

     A real solution to this problem might involve reference counts in
     bp's, and/or giving them pointers back to their referencing
     bpstat's, and teaching delete_breakpoint to only free a bp's
     storage when no more references were extent.  A cheaper bandaid
     was chosen.  */
  if (bpt->type == bp_none)
    return;

  /* At least avoid this stale reference until the reference counting
     of breakpoints gets resolved.  */
  if (bpt->related_breakpoint != bpt)
    {
      struct breakpoint *related;
      struct watchpoint *w;

      if (bpt->type == bp_watchpoint_scope)
	w = (struct watchpoint *) bpt->related_breakpoint;
      else if (bpt->related_breakpoint->type == bp_watchpoint_scope)
	w = (struct watchpoint *) bpt;
      else
	w = NULL;
      if (w != NULL)
	watchpoint_del_at_next_stop (w);

      /* Unlink bpt from the bpt->related_breakpoint ring.  */
      for (related = bpt; related->related_breakpoint != bpt;
	   related = related->related_breakpoint);
      related->related_breakpoint = bpt->related_breakpoint;
      bpt->related_breakpoint = bpt;
    }

  /* watch_command_1 creates a watchpoint but only sets its number if
     update_watchpoint succeeds in creating its bp_locations.  If there's
     a problem in that process, we'll be asked to delete the half-created
     watchpoint.  In that case, don't announce the deletion.  */
  if (bpt->number)
    observer_notify_breakpoint_deleted (bpt);

  if (breakpoint_chain == bpt)
    breakpoint_chain = bpt->next;

  ALL_BREAKPOINTS (b)
    if (b->next == bpt)
    {
      b->next = bpt->next;
      break;
    }

  /* Be sure no bpstat's are pointing at the breakpoint after it's
     been freed.  */
  /* FIXME, how can we find all bpstat's?  We just check stop_bpstat
     in all threads for now.  Note that we cannot just remove bpstats
     pointing at bpt from the stop_bpstat list entirely, as breakpoint
     commands are associated with the bpstat; if we remove it here,
     then the later call to bpstat_do_actions (&stop_bpstat); in
     event-top.c won't do anything, and temporary breakpoints with
     commands won't work.  */

  iterate_over_threads (bpstat_remove_breakpoint_callback, bpt);

  /* Now that breakpoint is removed from breakpoint list, update the
     global location list.  This will remove locations that used to
     belong to this breakpoint.  Do this before freeing the breakpoint
     itself, since remove_breakpoint looks at location's owner.  It
     might be better design to have location completely
     self-contained, but it's not the case now.  */
  update_global_location_list (UGLL_DONT_INSERT);

  bpt->ops->dtor (bpt);
  /* On the chance that someone will soon try again to delete this
     same bp, we mark it as deleted before freeing its storage.  */
  bpt->type = bp_none;
  delete bpt;
}

static void
do_delete_breakpoint_cleanup (void *b)
{
  delete_breakpoint ((struct breakpoint *) b);
}

struct cleanup *
make_cleanup_delete_breakpoint (struct breakpoint *b)
{
  return make_cleanup (do_delete_breakpoint_cleanup, b);
}

/* Iterator function to call a user-provided callback function once
   for each of B and its related breakpoints.  */

static void
iterate_over_related_breakpoints (struct breakpoint *b,
				  void (*function) (struct breakpoint *,
						    void *),
				  void *data)
{
  struct breakpoint *related;

  related = b;
  do
    {
      struct breakpoint *next;

      /* FUNCTION may delete RELATED.  */
      next = related->related_breakpoint;

      if (next == related)
	{
	  /* RELATED is the last ring entry.  */
	  function (related, data);

	  /* FUNCTION may have deleted it, so we'd never reach back to
	     B.  There's nothing left to do anyway, so just break
	     out.  */
	  break;
	}
      else
	function (related, data);

      related = next;
    }
  while (related != b);
}

static void
do_delete_breakpoint (struct breakpoint *b, void *ignore)
{
  delete_breakpoint (b);
}

/* A callback for map_breakpoint_numbers that calls
   delete_breakpoint.  */

static void
do_map_delete_breakpoint (struct breakpoint *b, void *ignore)
{
  iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL);
}

void
delete_command (char *arg, int from_tty)
{
  struct breakpoint *b, *b_tmp;

  dont_repeat ();

  if (arg == 0)
    {
      int breaks_to_delete = 0;

      /* Delete all breakpoints if no argument.  Do not delete
         internal breakpoints, these have to be deleted with an
         explicit breakpoint number argument.  */
      ALL_BREAKPOINTS (b)
	if (user_breakpoint_p (b))
	  {
	    breaks_to_delete = 1;
	    break;
	  }

      /* Ask user only if there are some breakpoints to delete.  */
      if (!from_tty
	  || (breaks_to_delete && query (_("Delete all breakpoints? "))))
	{
	  ALL_BREAKPOINTS_SAFE (b, b_tmp)
	    if (user_breakpoint_p (b))
	      delete_breakpoint (b);
	}
    }
  else
    map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL);
}

/* Return true if all locations of B bound to PSPACE are pending.  If
   PSPACE is NULL, all locations of all program spaces are
   considered.  */

static int
all_locations_are_pending (struct breakpoint *b, struct program_space *pspace)
{
  struct bp_location *loc;

  for (loc = b->loc; loc != NULL; loc = loc->next)
    if ((pspace == NULL
	 || loc->pspace == pspace)
	&& !loc->shlib_disabled
	&& !loc->pspace->executing_startup)
      return 0;
  return 1;
}

/* Subroutine of update_breakpoint_locations to simplify it.
   Return non-zero if multiple fns in list LOC have the same name.
   Null names are ignored.  */

static int
ambiguous_names_p (struct bp_location *loc)
{
  struct bp_location *l;
  htab_t htab = htab_create_alloc (13, htab_hash_string,
				   (int (*) (const void *, 
					     const void *)) streq,
				   NULL, xcalloc, xfree);

  for (l = loc; l != NULL; l = l->next)
    {
      const char **slot;
      const char *name = l->function_name;

      /* Allow for some names to be NULL, ignore them.  */
      if (name == NULL)
	continue;

      slot = (const char **) htab_find_slot (htab, (const void *) name,
					     INSERT);
      /* NOTE: We can assume slot != NULL here because xcalloc never
	 returns NULL.  */
      if (*slot != NULL)
	{
	  htab_delete (htab);
	  return 1;
	}
      *slot = name;
    }

  htab_delete (htab);
  return 0;
}

/* When symbols change, it probably means the sources changed as well,
   and it might mean the static tracepoint markers are no longer at
   the same address or line numbers they used to be at last we
   checked.  Losing your static tracepoints whenever you rebuild is
   undesirable.  This function tries to resync/rematch gdb static
   tracepoints with the markers on the target, for static tracepoints
   that have not been set by marker id.  Static tracepoint that have
   been set by marker id are reset by marker id in breakpoint_re_set.
   The heuristic is:

   1) For a tracepoint set at a specific address, look for a marker at
   the old PC.  If one is found there, assume to be the same marker.
   If the name / string id of the marker found is different from the
   previous known name, assume that means the user renamed the marker
   in the sources, and output a warning.

   2) For a tracepoint set at a given line number, look for a marker
   at the new address of the old line number.  If one is found there,
   assume to be the same marker.  If the name / string id of the
   marker found is different from the previous known name, assume that
   means the user renamed the marker in the sources, and output a
   warning.

   3) If a marker is no longer found at the same address or line, it
   may mean the marker no longer exists.  But it may also just mean
   the code changed a bit.  Maybe the user added a few lines of code
   that made the marker move up or down (in line number terms).  Ask
   the target for info about the marker with the string id as we knew
   it.  If found, update line number and address in the matching
   static tracepoint.  This will get confused if there's more than one
   marker with the same ID (possible in UST, although unadvised
   precisely because it confuses tools).  */

static struct symtab_and_line
update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal)
{
  struct tracepoint *tp = (struct tracepoint *) b;
  struct static_tracepoint_marker marker;
  CORE_ADDR pc;

  pc = sal.pc;
  if (sal.line)
    find_line_pc (sal.symtab, sal.line, &pc);

  if (target_static_tracepoint_marker_at (pc, &marker))
    {
      if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0)
	warning (_("static tracepoint %d changed probed marker from %s to %s"),
		 b->number,
		 tp->static_trace_marker_id, marker.str_id);

      xfree (tp->static_trace_marker_id);
      tp->static_trace_marker_id = xstrdup (marker.str_id);
      release_static_tracepoint_marker (&marker);

      return sal;
    }

  /* Old marker wasn't found on target at lineno.  Try looking it up
     by string ID.  */
  if (!sal.explicit_pc
      && sal.line != 0
      && sal.symtab != NULL
      && tp->static_trace_marker_id != NULL)
    {
      VEC(static_tracepoint_marker_p) *markers;

      markers
	= target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id);

      if (!VEC_empty(static_tracepoint_marker_p, markers))
	{
	  struct symtab_and_line sal2;
	  struct symbol *sym;
	  struct static_tracepoint_marker *tpmarker;
	  struct ui_out *uiout = current_uiout;
	  struct explicit_location explicit_loc;

	  tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0);

	  xfree (tp->static_trace_marker_id);
	  tp->static_trace_marker_id = xstrdup (tpmarker->str_id);

	  warning (_("marker for static tracepoint %d (%s) not "
		     "found at previous line number"),
		   b->number, tp->static_trace_marker_id);

	  init_sal (&sal2);

	  sal2.pc = tpmarker->address;

	  sal2 = find_pc_line (tpmarker->address, 0);
	  sym = find_pc_sect_function (tpmarker->address, NULL);
	  ui_out_text (uiout, "Now in ");
	  if (sym)
	    {
	      ui_out_field_string (uiout, "func",
				   SYMBOL_PRINT_NAME (sym));
	      ui_out_text (uiout, " at ");
	    }
	  ui_out_field_string (uiout, "file",
			       symtab_to_filename_for_display (sal2.symtab));
	  ui_out_text (uiout, ":");

	  if (ui_out_is_mi_like_p (uiout))
	    {
	      const char *fullname = symtab_to_fullname (sal2.symtab);

	      ui_out_field_string (uiout, "fullname", fullname);
	    }

	  ui_out_field_int (uiout, "line", sal2.line);
	  ui_out_text (uiout, "\n");

	  b->loc->line_number = sal2.line;
	  b->loc->symtab = sym != NULL ? sal2.symtab : NULL;

	  delete_event_location (b->location);
	  initialize_explicit_location (&explicit_loc);
	  explicit_loc.source_filename
	    = ASTRDUP (symtab_to_filename_for_display (sal2.symtab));
	  explicit_loc.line_offset.offset = b->loc->line_number;
	  explicit_loc.line_offset.sign = LINE_OFFSET_NONE;
	  b->location = new_explicit_location (&explicit_loc);

	  /* Might be nice to check if function changed, and warn if
	     so.  */

	  release_static_tracepoint_marker (tpmarker);
	}
    }
  return sal;
}

/* Returns 1 iff locations A and B are sufficiently same that
   we don't need to report breakpoint as changed.  */

static int
locations_are_equal (struct bp_location *a, struct bp_location *b)
{
  while (a && b)
    {
      if (a->address != b->address)
	return 0;

      if (a->shlib_disabled != b->shlib_disabled)
	return 0;

      if (a->enabled != b->enabled)
	return 0;

      a = a->next;
      b = b->next;
    }

  if ((a == NULL) != (b == NULL))
    return 0;

  return 1;
}

/* Split all locations of B that are bound to PSPACE out of B's
   location list to a separate list and return that list's head.  If
   PSPACE is NULL, hoist out all locations of B.  */

static struct bp_location *
hoist_existing_locations (struct breakpoint *b, struct program_space *pspace)
{
  struct bp_location head;
  struct bp_location *i = b->loc;
  struct bp_location **i_link = &b->loc;
  struct bp_location *hoisted = &head;

  if (pspace == NULL)
    {
      i = b->loc;
      b->loc = NULL;
      return i;
    }

  head.next = NULL;

  while (i != NULL)
    {
      if (i->pspace == pspace)
	{
	  *i_link = i->next;
	  i->next = NULL;
	  hoisted->next = i;
	  hoisted = i;
	}
      else
	i_link = &i->next;
      i = *i_link;
    }

  return head.next;
}

/* Create new breakpoint locations for B (a hardware or software
   breakpoint) based on SALS and SALS_END.  If SALS_END.NELTS is not
   zero, then B is a ranged breakpoint.  Only recreates locations for
   FILTER_PSPACE.  Locations of other program spaces are left
   untouched.  */

void
update_breakpoint_locations (struct breakpoint *b,
			     struct program_space *filter_pspace,
			     struct symtabs_and_lines sals,
			     struct symtabs_and_lines sals_end)
{
  int i;
  struct bp_location *existing_locations;

  if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1))
    {
      /* Ranged breakpoints have only one start location and one end
	 location.  */
      b->enable_state = bp_disabled;
      printf_unfiltered (_("Could not reset ranged breakpoint %d: "
			   "multiple locations found\n"),
			 b->number);
      return;
    }

  /* If there's no new locations, and all existing locations are
     pending, don't do anything.  This optimizes the common case where
     all locations are in the same shared library, that was unloaded.
     We'd like to retain the location, so that when the library is
     loaded again, we don't loose the enabled/disabled status of the
     individual locations.  */
  if (all_locations_are_pending (b, filter_pspace) && sals.nelts == 0)
    return;

  existing_locations = hoist_existing_locations (b, filter_pspace);

  for (i = 0; i < sals.nelts; ++i)
    {
      struct bp_location *new_loc;

      switch_to_program_space_and_thread (sals.sals[i].pspace);

      new_loc = add_location_to_breakpoint (b, &(sals.sals[i]));

      /* Reparse conditions, they might contain references to the
	 old symtab.  */
      if (b->cond_string != NULL)
	{
	  const char *s;

	  s = b->cond_string;
	  TRY
	    {
	      new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc,
					   block_for_pc (sals.sals[i].pc), 
					   0);
	    }
	  CATCH (e, RETURN_MASK_ERROR)
	    {
	      warning (_("failed to reevaluate condition "
			 "for breakpoint %d: %s"), 
		       b->number, e.message);
	      new_loc->enabled = 0;
	    }
	  END_CATCH
	}

      if (sals_end.nelts)
	{
	  CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]);

	  new_loc->length = end - sals.sals[0].pc + 1;
	}
    }

  /* If possible, carry over 'disable' status from existing
     breakpoints.  */
  {
    struct bp_location *e = existing_locations;
    /* If there are multiple breakpoints with the same function name,
       e.g. for inline functions, comparing function names won't work.
       Instead compare pc addresses; this is just a heuristic as things
       may have moved, but in practice it gives the correct answer
       often enough until a better solution is found.  */
    int have_ambiguous_names = ambiguous_names_p (b->loc);

    for (; e; e = e->next)
      {
	if (!e->enabled && e->function_name)
	  {
	    struct bp_location *l = b->loc;
	    if (have_ambiguous_names)
	      {
		for (; l; l = l->next)
		  if (breakpoint_locations_match (e, l))
		    {
		      l->enabled = 0;
		      break;
		    }
	      }
	    else
	      {
		for (; l; l = l->next)
		  if (l->function_name
		      && strcmp (e->function_name, l->function_name) == 0)
		    {
		      l->enabled = 0;
		      break;
		    }
	      }
	  }
      }
  }

  if (!locations_are_equal (existing_locations, b->loc))
    observer_notify_breakpoint_modified (b);
}

/* Find the SaL locations corresponding to the given LOCATION.
   On return, FOUND will be 1 if any SaL was found, zero otherwise.  */

static struct symtabs_and_lines
location_to_sals (struct breakpoint *b, struct event_location *location,
		  struct program_space *search_pspace, int *found)
{
  struct symtabs_and_lines sals = {0};
  struct gdb_exception exception = exception_none;

  gdb_assert (b->ops != NULL);

  TRY
    {
      b->ops->decode_location (b, location, search_pspace, &sals);
    }
  CATCH (e, RETURN_MASK_ERROR)
    {
      int not_found_and_ok = 0;

      exception = e;

      /* For pending breakpoints, it's expected that parsing will
	 fail until the right shared library is loaded.  User has
	 already told to create pending breakpoints and don't need
	 extra messages.  If breakpoint is in bp_shlib_disabled
	 state, then user already saw the message about that
	 breakpoint being disabled, and don't want to see more
	 errors.  */
      if (e.error == NOT_FOUND_ERROR
	  && (b->condition_not_parsed
	      || (b->loc != NULL
		  && search_pspace != NULL
		  && b->loc->pspace != search_pspace)
	      || (b->loc && b->loc->shlib_disabled)
	      || (b->loc && b->loc->pspace->executing_startup)
	      || b->enable_state == bp_disabled))
	not_found_and_ok = 1;

      if (!not_found_and_ok)
	{
	  /* We surely don't want to warn about the same breakpoint
	     10 times.  One solution, implemented here, is disable
	     the breakpoint on error.  Another solution would be to
	     have separate 'warning emitted' flag.  Since this
	     happens only when a binary has changed, I don't know
	     which approach is better.  */
	  b->enable_state = bp_disabled;
	  throw_exception (e);
	}
    }
  END_CATCH

  if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR)
    {
      int i;

      for (i = 0; i < sals.nelts; ++i)
	resolve_sal_pc (&sals.sals[i]);
      if (b->condition_not_parsed && b->extra_string != NULL)
	{
	  char *cond_string, *extra_string;
	  int thread, task;

	  find_condition_and_thread (b->extra_string, sals.sals[0].pc,
				     &cond_string, &thread, &task,
				     &extra_string);
	  gdb_assert (b->cond_string == NULL);
	  if (cond_string)
	    b->cond_string = cond_string;
	  b->thread = thread;
	  b->task = task;
	  if (extra_string)
	    {
	      xfree (b->extra_string);
	      b->extra_string = extra_string;
	    }
	  b->condition_not_parsed = 0;
	}

      if (b->type == bp_static_tracepoint && !strace_marker_p (b))
	sals.sals[0] = update_static_tracepoint (b, sals.sals[0]);

      *found = 1;
    }
  else
    *found = 0;

  return sals;
}

/* The default re_set method, for typical hardware or software
   breakpoints.  Reevaluate the breakpoint and recreate its
   locations.  */

static void
breakpoint_re_set_default (struct breakpoint *b)
{
  int found;
  struct symtabs_and_lines sals, sals_end;
  struct symtabs_and_lines expanded = {0};
  struct symtabs_and_lines expanded_end = {0};
  struct program_space *filter_pspace = current_program_space;

  sals = location_to_sals (b, b->location, filter_pspace, &found);
  if (found)
    {
      make_cleanup (xfree, sals.sals);
      expanded = sals;
    }

  if (b->location_range_end != NULL)
    {
      sals_end = location_to_sals (b, b->location_range_end,
				   filter_pspace, &found);
      if (found)
	{
	  make_cleanup (xfree, sals_end.sals);
	  expanded_end = sals_end;
	}
    }

  update_breakpoint_locations (b, filter_pspace, expanded, expanded_end);
}

/* Default method for creating SALs from an address string.  It basically
   calls parse_breakpoint_sals.  Return 1 for success, zero for failure.  */

static void
create_sals_from_location_default (const struct event_location *location,
				   struct linespec_result *canonical,
				   enum bptype type_wanted)
{
  parse_breakpoint_sals (location, canonical);
}

/* Call create_breakpoints_sal for the given arguments.  This is the default
   function for the `create_breakpoints_sal' method of
   breakpoint_ops.  */

static void
create_breakpoints_sal_default (struct gdbarch *gdbarch,
				struct linespec_result *canonical,
				char *cond_string,
				char *extra_string,
				enum bptype type_wanted,
				enum bpdisp disposition,
				int thread,
				int task, int ignore_count,
				const struct breakpoint_ops *ops,
				int from_tty, int enabled,
				int internal, unsigned flags)
{
  create_breakpoints_sal (gdbarch, canonical, cond_string,
			  extra_string,
			  type_wanted, disposition,
			  thread, task, ignore_count, ops, from_tty,
			  enabled, internal, flags);
}

/* Decode the line represented by S by calling decode_line_full.  This is the
   default function for the `decode_location' method of breakpoint_ops.  */

static void
decode_location_default (struct breakpoint *b,
			 const struct event_location *location,
			 struct program_space *search_pspace,
			 struct symtabs_and_lines *sals)
{
  struct linespec_result canonical;

  init_linespec_result (&canonical);
  decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace,
		    (struct symtab *) NULL, 0,
		    &canonical, multiple_symbols_all,
		    b->filter);

  /* We should get 0 or 1 resulting SALs.  */
  gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2);

  if (VEC_length (linespec_sals, canonical.sals) > 0)
    {
      struct linespec_sals *lsal;

      lsal = VEC_index (linespec_sals, canonical.sals, 0);
      *sals = lsal->sals;
      /* Arrange it so the destructor does not free the
	 contents.  */
      lsal->sals.sals = NULL;
    }

  destroy_linespec_result (&canonical);
}

/* Prepare the global context for a re-set of breakpoint B.  */

static struct cleanup *
prepare_re_set_context (struct breakpoint *b)
{
  input_radix = b->input_radix;
  set_language (b->language);

  return make_cleanup (null_cleanup, NULL);
}

/* Reset a breakpoint given it's struct breakpoint * BINT.
   The value we return ends up being the return value from catch_errors.
   Unused in this case.  */

static int
breakpoint_re_set_one (void *bint)
{
  /* Get past catch_errs.  */
  struct breakpoint *b = (struct breakpoint *) bint;
  struct cleanup *cleanups;

  cleanups = prepare_re_set_context (b);
  b->ops->re_set (b);
  do_cleanups (cleanups);
  return 0;
}

/* Re-set breakpoint locations for the current program space.
   Locations bound to other program spaces are left untouched.  */

void
breakpoint_re_set (void)
{
  struct breakpoint *b, *b_tmp;
  enum language save_language;
  int save_input_radix;
  struct cleanup *old_chain;

  save_language = current_language->la_language;
  save_input_radix = input_radix;
  old_chain = save_current_space_and_thread ();

  /* Note: we must not try to insert locations until after all
     breakpoints have been re-set.  Otherwise, e.g., when re-setting
     breakpoint 1, we'd insert the locations of breakpoint 2, which
     hadn't been re-set yet, and thus may have stale locations.  */

  ALL_BREAKPOINTS_SAFE (b, b_tmp)
  {
    /* Format possible error msg.  */
    char *message = xstrprintf ("Error in re-setting breakpoint %d: ",
				b->number);
    struct cleanup *cleanups = make_cleanup (xfree, message);
    catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL);
    do_cleanups (cleanups);
  }
  set_language (save_language);
  input_radix = save_input_radix;

  jit_breakpoint_re_set ();

  do_cleanups (old_chain);

  create_overlay_event_breakpoint ();
  create_longjmp_master_breakpoint ();
  create_std_terminate_master_breakpoint ();
  create_exception_master_breakpoint ();

  /* Now we can insert.  */
  update_global_location_list (UGLL_MAY_INSERT);
}

/* Reset the thread number of this breakpoint:

   - If the breakpoint is for all threads, leave it as-is.
   - Else, reset it to the current thread for inferior_ptid.  */
void
breakpoint_re_set_thread (struct breakpoint *b)
{
  if (b->thread != -1)
    {
      if (in_thread_list (inferior_ptid))
	b->thread = ptid_to_global_thread_id (inferior_ptid);

      /* We're being called after following a fork.  The new fork is
	 selected as current, and unless this was a vfork will have a
	 different program space from the original thread.  Reset that
	 as well.  */
      b->loc->pspace = current_program_space;
    }
}

/* Set ignore-count of breakpoint number BPTNUM to COUNT.
   If from_tty is nonzero, it prints a message to that effect,
   which ends with a period (no newline).  */

void
set_ignore_count (int bptnum, int count, int from_tty)
{
  struct breakpoint *b;

  if (count < 0)
    count = 0;

  ALL_BREAKPOINTS (b)
    if (b->number == bptnum)
    {
      if (is_tracepoint (b))
	{
	  if (from_tty && count != 0)
	    printf_filtered (_("Ignore count ignored for tracepoint %d."),
			     bptnum);
	  return;
	}
      
      b->ignore_count = count;
      if (from_tty)
	{
	  if (count == 0)
	    printf_filtered (_("Will stop next time "
			       "breakpoint %d is reached."),
			     bptnum);
	  else if (count == 1)
	    printf_filtered (_("Will ignore next crossing of breakpoint %d."),
			     bptnum);
	  else
	    printf_filtered (_("Will ignore next %d "
			       "crossings of breakpoint %d."),
			     count, bptnum);
	}
      observer_notify_breakpoint_modified (b);
      return;
    }

  error (_("No breakpoint number %d."), bptnum);
}

/* Command to set ignore-count of breakpoint N to COUNT.  */

static void
ignore_command (char *args, int from_tty)
{
  char *p = args;
  int num;

  if (p == 0)
    error_no_arg (_("a breakpoint number"));

  num = get_number (&p);
  if (num == 0)
    error (_("bad breakpoint number: '%s'"), args);
  if (*p == 0)
    error (_("Second argument (specified ignore-count) is missing."));

  set_ignore_count (num,
		    longest_to_int (value_as_long (parse_and_eval (p))),
		    from_tty);
  if (from_tty)
    printf_filtered ("\n");
}

/* Call FUNCTION on each of the breakpoints
   whose numbers are given in ARGS.  */

static void
map_breakpoint_numbers (const char *args,
			void (*function) (struct breakpoint *,
					  void *),
			void *data)
{
  int num;
  struct breakpoint *b, *tmp;

  if (args == 0 || *args == '\0')
    error_no_arg (_("one or more breakpoint numbers"));

  number_or_range_parser parser (args);

  while (!parser.finished ())
    {
      const char *p = parser.cur_tok ();
      bool match = false;

      num = parser.get_number ();
      if (num == 0)
	{
	  warning (_("bad breakpoint number at or near '%s'"), p);
	}
      else
	{
	  ALL_BREAKPOINTS_SAFE (b, tmp)
	    if (b->number == num)
	      {
		match = true;
		function (b, data);
		break;
	      }
	  if (!match)
	    printf_unfiltered (_("No breakpoint number %d.\n"), num);
	}
    }
}

static struct bp_location *
find_location_by_number (char *number)
{
  char *dot = strchr (number, '.');
  char *p1;
  int bp_num;
  int loc_num;
  struct breakpoint *b;
  struct bp_location *loc;  

  *dot = '\0';

  p1 = number;
  bp_num = get_number (&p1);
  if (bp_num == 0)
    error (_("Bad breakpoint number '%s'"), number);

  ALL_BREAKPOINTS (b)
    if (b->number == bp_num)
      {
	break;
      }

  if (!b || b->number != bp_num)
    error (_("Bad breakpoint number '%s'"), number);
  
  p1 = dot+1;
  loc_num = get_number (&p1);
  if (loc_num == 0)
    error (_("Bad breakpoint location number '%s'"), number);

  --loc_num;
  loc = b->loc;
  for (;loc_num && loc; --loc_num, loc = loc->next)
    ;
  if (!loc)
    error (_("Bad breakpoint location number '%s'"), dot+1);
    
  return loc;  
}


/* Set ignore-count of breakpoint number BPTNUM to COUNT.
   If from_tty is nonzero, it prints a message to that effect,
   which ends with a period (no newline).  */

void
disable_breakpoint (struct breakpoint *bpt)
{
  /* Never disable a watchpoint scope breakpoint; we want to
     hit them when we leave scope so we can delete both the
     watchpoint and its scope breakpoint at that time.  */
  if (bpt->type == bp_watchpoint_scope)
    return;

  bpt->enable_state = bp_disabled;

  /* Mark breakpoint locations modified.  */
  mark_breakpoint_modified (bpt);

  if (target_supports_enable_disable_tracepoint ()
      && current_trace_status ()->running && is_tracepoint (bpt))
    {
      struct bp_location *location;
     
      for (location = bpt->loc; location; location = location->next)
	target_disable_tracepoint (location);
    }

  update_global_location_list (UGLL_DONT_INSERT);

  observer_notify_breakpoint_modified (bpt);
}

/* A callback for iterate_over_related_breakpoints.  */

static void
do_disable_breakpoint (struct breakpoint *b, void *ignore)
{
  disable_breakpoint (b);
}

/* A callback for map_breakpoint_numbers that calls
   disable_breakpoint.  */

static void
do_map_disable_breakpoint (struct breakpoint *b, void *ignore)
{
  iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL);
}

static void
disable_command (char *args, int from_tty)
{
  if (args == 0)
    {
      struct breakpoint *bpt;

      ALL_BREAKPOINTS (bpt)
	if (user_breakpoint_p (bpt))
	  disable_breakpoint (bpt);
    }
  else
    {
      char *num = extract_arg (&args);

      while (num)
	{
	  if (strchr (num, '.'))
	    {
	      struct bp_location *loc = find_location_by_number (num);

	      if (loc)
		{
		  if (loc->enabled)
		    {
		      loc->enabled = 0;
		      mark_breakpoint_location_modified (loc);
		    }
		  if (target_supports_enable_disable_tracepoint ()
		      && current_trace_status ()->running && loc->owner
		      && is_tracepoint (loc->owner))
		    target_disable_tracepoint (loc);
		}
	      update_global_location_list (UGLL_DONT_INSERT);
	    }
	  else
	    map_breakpoint_numbers (num, do_map_disable_breakpoint, NULL);
	  num = extract_arg (&args);
	}
    }
}

static void
enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition,
			int count)
{
  int target_resources_ok;

  if (bpt->type == bp_hardware_breakpoint)
    {
      int i;
      i = hw_breakpoint_used_count ();
      target_resources_ok = 
	target_can_use_hardware_watchpoint (bp_hardware_breakpoint, 
					    i + 1, 0);
      if (target_resources_ok == 0)
	error (_("No hardware breakpoint support in the target."));
      else if (target_resources_ok < 0)
	error (_("Hardware breakpoints used exceeds limit."));
    }

  if (is_watchpoint (bpt))
    {
      /* Initialize it just to avoid a GCC false warning.  */
      enum enable_state orig_enable_state = bp_disabled;

      TRY
	{
	  struct watchpoint *w = (struct watchpoint *) bpt;

	  orig_enable_state = bpt->enable_state;
	  bpt->enable_state = bp_enabled;
	  update_watchpoint (w, 1 /* reparse */);
	}
      CATCH (e, RETURN_MASK_ALL)
	{
	  bpt->enable_state = orig_enable_state;
	  exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "),
			     bpt->number);
	  return;
	}
      END_CATCH
    }

  bpt->enable_state = bp_enabled;

  /* Mark breakpoint locations modified.  */
  mark_breakpoint_modified (bpt);

  if (target_supports_enable_disable_tracepoint ()
      && current_trace_status ()->running && is_tracepoint (bpt))
    {
      struct bp_location *location;

      for (location = bpt->loc; location; location = location->next)
	target_enable_tracepoint (location);
    }

  bpt->disposition = disposition;
  bpt->enable_count = count;
  update_global_location_list (UGLL_MAY_INSERT);

  observer_notify_breakpoint_modified (bpt);
}


void
enable_breakpoint (struct breakpoint *bpt)
{
  enable_breakpoint_disp (bpt, bpt->disposition, 0);
}

static void
do_enable_breakpoint (struct breakpoint *bpt, void *arg)
{
  enable_breakpoint (bpt);
}

/* A callback for map_breakpoint_numbers that calls
   enable_breakpoint.  */

static void
do_map_enable_breakpoint (struct breakpoint *b, void *ignore)
{
  iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL);
}

/* The enable command enables the specified breakpoints (or all defined
   breakpoints) so they once again become (or continue to be) effective
   in stopping the inferior.  */

static void
enable_command (char *args, int from_tty)
{
  if (args == 0)
    {
      struct breakpoint *bpt;

      ALL_BREAKPOINTS (bpt)
	if (user_breakpoint_p (bpt))
	  enable_breakpoint (bpt);
    }
  else
    {
      char *num = extract_arg (&args);

      while (num)
	{
	  if (strchr (num, '.'))
	    {
	      struct bp_location *loc = find_location_by_number (num);

	      if (loc)
		{
		  if (!loc->enabled)
		    {
		      loc->enabled = 1;
		      mark_breakpoint_location_modified (loc);
		    }
		  if (target_supports_enable_disable_tracepoint ()
		      && current_trace_status ()->running && loc->owner
		      && is_tracepoint (loc->owner))
		    target_enable_tracepoint (loc);
		}
	      update_global_location_list (UGLL_MAY_INSERT);
	    }
	  else
	    map_breakpoint_numbers (num, do_map_enable_breakpoint, NULL);
	  num = extract_arg (&args);
	}
    }
}

/* This struct packages up disposition data for application to multiple
   breakpoints.  */

struct disp_data
{
  enum bpdisp disp;
  int count;
};

static void
do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg)
{
  struct disp_data disp_data = *(struct disp_data *) arg;

  enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count);
}

static void
do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore)
{
  struct disp_data disp = { disp_disable, 1 };

  iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp);
}

static void
enable_once_command (char *args, int from_tty)
{
  map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL);
}

static void
do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr)
{
  struct disp_data disp = { disp_disable, *(int *) countptr };

  iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp);
}

static void
enable_count_command (char *args, int from_tty)
{
  int count;

  if (args == NULL)
    error_no_arg (_("hit count"));

  count = get_number (&args);

  map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count);
}

static void
do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore)
{
  struct disp_data disp = { disp_del, 1 };

  iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp);
}

static void
enable_delete_command (char *args, int from_tty)
{
  map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL);
}

static void
set_breakpoint_cmd (char *args, int from_tty)
{
}

static void
show_breakpoint_cmd (char *args, int from_tty)
{
}

/* Invalidate last known value of any hardware watchpoint if
   the memory which that value represents has been written to by
   GDB itself.  */

static void
invalidate_bp_value_on_memory_change (struct inferior *inferior,
				      CORE_ADDR addr, ssize_t len,
				      const bfd_byte *data)
{
  struct breakpoint *bp;

  ALL_BREAKPOINTS (bp)
    if (bp->enable_state == bp_enabled
	&& bp->type == bp_hardware_watchpoint)
      {
	struct watchpoint *wp = (struct watchpoint *) bp;

	if (wp->val_valid && wp->val)
	  {
	    struct bp_location *loc;

	    for (loc = bp->loc; loc != NULL; loc = loc->next)
	      if (loc->loc_type == bp_loc_hardware_watchpoint
		  && loc->address + loc->length > addr
		  && addr + len > loc->address)
		{
		  value_free (wp->val);
		  wp->val = NULL;
		  wp->val_valid = 0;
		}
	  }
      }
}

/* Create and insert a breakpoint for software single step.  */

void
insert_single_step_breakpoint (struct gdbarch *gdbarch,
			       struct address_space *aspace, 
			       CORE_ADDR next_pc)
{
  struct thread_info *tp = inferior_thread ();
  struct symtab_and_line sal;
  CORE_ADDR pc = next_pc;

  if (tp->control.single_step_breakpoints == NULL)
    {
      tp->control.single_step_breakpoints
	= new_single_step_breakpoint (tp->global_num, gdbarch);
    }

  sal = find_pc_line (pc, 0);
  sal.pc = pc;
  sal.section = find_pc_overlay (pc);
  sal.explicit_pc = 1;
  add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal);

  update_global_location_list (UGLL_INSERT);
}

/* Insert single step breakpoints according to the current state.  */

int
insert_single_step_breakpoints (struct gdbarch *gdbarch)
{
  struct regcache *regcache = get_current_regcache ();
  VEC (CORE_ADDR) * next_pcs;

  next_pcs = gdbarch_software_single_step (gdbarch, regcache);

  if (next_pcs != NULL)
    {
      int i;
      CORE_ADDR pc;
      struct frame_info *frame = get_current_frame ();
      struct address_space *aspace = get_frame_address_space (frame);

      for (i = 0; VEC_iterate (CORE_ADDR, next_pcs, i, pc); i++)
	insert_single_step_breakpoint (gdbarch, aspace, pc);

      VEC_free (CORE_ADDR, next_pcs);

      return 1;
    }
  else
    return 0;
}

/* See breakpoint.h.  */

int
breakpoint_has_location_inserted_here (struct breakpoint *bp,
				       struct address_space *aspace,
				       CORE_ADDR pc)
{
  struct bp_location *loc;

  for (loc = bp->loc; loc != NULL; loc = loc->next)
    if (loc->inserted
	&& breakpoint_location_address_match (loc, aspace, pc))
      return 1;

  return 0;
}

/* Check whether a software single-step breakpoint is inserted at
   PC.  */

int
single_step_breakpoint_inserted_here_p (struct address_space *aspace,
					CORE_ADDR pc)
{
  struct breakpoint *bpt;

  ALL_BREAKPOINTS (bpt)
    {
      if (bpt->type == bp_single_step
	  && breakpoint_has_location_inserted_here (bpt, aspace, pc))
	return 1;
    }
  return 0;
}

/* Tracepoint-specific operations.  */

/* Set tracepoint count to NUM.  */
static void
set_tracepoint_count (int num)
{
  tracepoint_count = num;
  set_internalvar_integer (lookup_internalvar ("tpnum"), num);
}

static void
trace_command (char *arg, int from_tty)
{
  struct breakpoint_ops *ops;
  struct event_location *location;
  struct cleanup *back_to;

  location = string_to_event_location (&arg, current_language);
  back_to = make_cleanup_delete_event_location (location);
  if (location != NULL
      && event_location_type (location) == PROBE_LOCATION)
    ops = &tracepoint_probe_breakpoint_ops;
  else
    ops = &tracepoint_breakpoint_ops;

  create_breakpoint (get_current_arch (),
		     location,
		     NULL, 0, arg, 1 /* parse arg */,
		     0 /* tempflag */,
		     bp_tracepoint /* type_wanted */,
		     0 /* Ignore count */,
		     pending_break_support,
		     ops,
		     from_tty,
		     1 /* enabled */,
		     0 /* internal */, 0);
  do_cleanups (back_to);
}

static void
ftrace_command (char *arg, int from_tty)
{
  struct event_location *location;
  struct cleanup *back_to;

  location = string_to_event_location (&arg, current_language);
  back_to = make_cleanup_delete_event_location (location);
  create_breakpoint (get_current_arch (),
		     location,
		     NULL, 0, arg, 1 /* parse arg */,
		     0 /* tempflag */,
		     bp_fast_tracepoint /* type_wanted */,
		     0 /* Ignore count */,
		     pending_break_support,
		     &tracepoint_breakpoint_ops,
		     from_tty,
		     1 /* enabled */,
		     0 /* internal */, 0);
  do_cleanups (back_to);
}

/* strace command implementation.  Creates a static tracepoint.  */

static void
strace_command (char *arg, int from_tty)
{
  struct breakpoint_ops *ops;
  struct event_location *location;
  struct cleanup *back_to;

  /* Decide if we are dealing with a static tracepoint marker (`-m'),
     or with a normal static tracepoint.  */
  if (arg && startswith (arg, "-m") && isspace (arg[2]))
    {
      ops = &strace_marker_breakpoint_ops;
      location = new_linespec_location (&arg);
    }
  else
    {
      ops = &tracepoint_breakpoint_ops;
      location = string_to_event_location (&arg, current_language);
    }

  back_to = make_cleanup_delete_event_location (location);
  create_breakpoint (get_current_arch (),
		     location,
		     NULL, 0, arg, 1 /* parse arg */,
		     0 /* tempflag */,
		     bp_static_tracepoint /* type_wanted */,
		     0 /* Ignore count */,
		     pending_break_support,
		     ops,
		     from_tty,
		     1 /* enabled */,
		     0 /* internal */, 0);
  do_cleanups (back_to);
}

/* Set up a fake reader function that gets command lines from a linked
   list that was acquired during tracepoint uploading.  */

static struct uploaded_tp *this_utp;
static int next_cmd;

static char *
read_uploaded_action (void)
{
  char *rslt;

  VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt);

  next_cmd++;

  return rslt;
}

/* Given information about a tracepoint as recorded on a target (which
   can be either a live system or a trace file), attempt to create an
   equivalent GDB tracepoint.  This is not a reliable process, since
   the target does not necessarily have all the information used when
   the tracepoint was originally defined.  */
  
struct tracepoint *
create_tracepoint_from_upload (struct uploaded_tp *utp)
{
  char *addr_str, small_buf[100];
  struct tracepoint *tp;
  struct event_location *location;
  struct cleanup *cleanup;

  if (utp->at_string)
    addr_str = utp->at_string;
  else
    {
      /* In the absence of a source location, fall back to raw
	 address.  Since there is no way to confirm that the address
	 means the same thing as when the trace was started, warn the
	 user.  */
      warning (_("Uploaded tracepoint %d has no "
		 "source location, using raw address"),
	       utp->number);
      xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr));
      addr_str = small_buf;
    }

  /* There's not much we can do with a sequence of bytecodes.  */
  if (utp->cond && !utp->cond_string)
    warning (_("Uploaded tracepoint %d condition "
	       "has no source form, ignoring it"),
	     utp->number);

  location = string_to_event_location (&addr_str, current_language);
  cleanup = make_cleanup_delete_event_location (location);
  if (!create_breakpoint (get_current_arch (),
			  location,
			  utp->cond_string, -1, addr_str,
			  0 /* parse cond/thread */,
			  0 /* tempflag */,
			  utp->type /* type_wanted */,
			  0 /* Ignore count */,
			  pending_break_support,
			  &tracepoint_breakpoint_ops,
			  0 /* from_tty */,
			  utp->enabled /* enabled */,
			  0 /* internal */,
			  CREATE_BREAKPOINT_FLAGS_INSERTED))
    {
      do_cleanups (cleanup);
      return NULL;
    }

  do_cleanups (cleanup);

  /* Get the tracepoint we just created.  */
  tp = get_tracepoint (tracepoint_count);
  gdb_assert (tp != NULL);

  if (utp->pass > 0)
    {
      xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass,
		 tp->base.number);

      trace_pass_command (small_buf, 0);
    }

  /* If we have uploaded versions of the original commands, set up a
     special-purpose "reader" function and call the usual command line
     reader, then pass the result to the breakpoint command-setting
     function.  */
  if (!VEC_empty (char_ptr, utp->cmd_strings))
    {
      struct command_line *cmd_list;

      this_utp = utp;
      next_cmd = 0;

      cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL);

      breakpoint_set_commands (&tp->base, cmd_list);
    }
  else if (!VEC_empty (char_ptr, utp->actions)
	   || !VEC_empty (char_ptr, utp->step_actions))
    warning (_("Uploaded tracepoint %d actions "
	       "have no source form, ignoring them"),
	     utp->number);

  /* Copy any status information that might be available.  */
  tp->base.hit_count = utp->hit_count;
  tp->traceframe_usage = utp->traceframe_usage;

  return tp;
}
  
/* Print information on tracepoint number TPNUM_EXP, or all if
   omitted.  */

static void
tracepoints_info (char *args, int from_tty)
{
  struct ui_out *uiout = current_uiout;
  int num_printed;

  num_printed = breakpoint_1 (args, 0, is_tracepoint);

  if (num_printed == 0)
    {
      if (args == NULL || *args == '\0')
	ui_out_message (uiout, "No tracepoints.\n");
      else
	ui_out_message (uiout, "No tracepoint matching '%s'.\n", args);
    }

  default_collect_info ();
}

/* The 'enable trace' command enables tracepoints.
   Not supported by all targets.  */
static void
enable_trace_command (char *args, int from_tty)
{
  enable_command (args, from_tty);
}

/* The 'disable trace' command disables tracepoints.
   Not supported by all targets.  */
static void
disable_trace_command (char *args, int from_tty)
{
  disable_command (args, from_tty);
}

/* Remove a tracepoint (or all if no argument).  */
static void
delete_trace_command (char *arg, int from_tty)
{
  struct breakpoint *b, *b_tmp;

  dont_repeat ();

  if (arg == 0)
    {
      int breaks_to_delete = 0;

      /* Delete all breakpoints if no argument.
         Do not delete internal or call-dummy breakpoints, these
         have to be deleted with an explicit breakpoint number 
	 argument.  */
      ALL_TRACEPOINTS (b)
	if (is_tracepoint (b) && user_breakpoint_p (b))
	  {
	    breaks_to_delete = 1;
	    break;
	  }

      /* Ask user only if there are some breakpoints to delete.  */
      if (!from_tty
	  || (breaks_to_delete && query (_("Delete all tracepoints? "))))
	{
	  ALL_BREAKPOINTS_SAFE (b, b_tmp)
	    if (is_tracepoint (b) && user_breakpoint_p (b))
	      delete_breakpoint (b);
	}
    }
  else
    map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL);
}

/* Helper function for trace_pass_command.  */

static void
trace_pass_set_count (struct tracepoint *tp, int count, int from_tty)
{
  tp->pass_count = count;
  observer_notify_breakpoint_modified (&tp->base);
  if (from_tty)
    printf_filtered (_("Setting tracepoint %d's passcount to %d\n"),
		     tp->base.number, count);
}

/* Set passcount for tracepoint.

   First command argument is passcount, second is tracepoint number.
   If tracepoint number omitted, apply to most recently defined.
   Also accepts special argument "all".  */

static void
trace_pass_command (char *args, int from_tty)
{
  struct tracepoint *t1;
  unsigned int count;

  if (args == 0 || *args == 0)
    error (_("passcount command requires an "
	     "argument (count + optional TP num)"));

  count = strtoul (args, &args, 10);	/* Count comes first, then TP num.  */

  args = skip_spaces (args);
  if (*args && strncasecmp (args, "all", 3) == 0)
    {
      struct breakpoint *b;

      args += 3;			/* Skip special argument "all".  */
      if (*args)
	error (_("Junk at end of arguments."));

      ALL_TRACEPOINTS (b)
      {
	t1 = (struct tracepoint *) b;
	trace_pass_set_count (t1, count, from_tty);
      }
    }
  else if (*args == '\0')
    {
      t1 = get_tracepoint_by_number (&args, NULL);
      if (t1)
	trace_pass_set_count (t1, count, from_tty);
    }
  else
    {
      number_or_range_parser parser (args);
      while (!parser.finished ())
	{
	  t1 = get_tracepoint_by_number (&args, &parser);
	  if (t1)
	    trace_pass_set_count (t1, count, from_tty);
	}
    }
}

struct tracepoint *
get_tracepoint (int num)
{
  struct breakpoint *t;

  ALL_TRACEPOINTS (t)
    if (t->number == num)
      return (struct tracepoint *) t;

  return NULL;
}

/* Find the tracepoint with the given target-side number (which may be
   different from the tracepoint number after disconnecting and
   reconnecting).  */

struct tracepoint *
get_tracepoint_by_number_on_target (int num)
{
  struct breakpoint *b;

  ALL_TRACEPOINTS (b)
    {
      struct tracepoint *t = (struct tracepoint *) b;

      if (t->number_on_target == num)
	return t;
    }

  return NULL;
}

/* Utility: parse a tracepoint number and look it up in the list.
   If STATE is not NULL, use, get_number_or_range_state and ignore ARG.
   If the argument is missing, the most recent tracepoint
   (tracepoint_count) is returned.  */

struct tracepoint *
get_tracepoint_by_number (char **arg,
			  number_or_range_parser *parser)
{
  struct breakpoint *t;
  int tpnum;
  char *instring = arg == NULL ? NULL : *arg;

  if (parser != NULL)
    {
      gdb_assert (!parser->finished ());
      tpnum = parser->get_number ();
    }
  else if (arg == NULL || *arg == NULL || ! **arg)
    tpnum = tracepoint_count;
  else
    tpnum = get_number (arg);

  if (tpnum <= 0)
    {
      if (instring && *instring)
	printf_filtered (_("bad tracepoint number at or near '%s'\n"), 
			 instring);
      else
	printf_filtered (_("No previous tracepoint\n"));
      return NULL;
    }

  ALL_TRACEPOINTS (t)
    if (t->number == tpnum)
    {
      return (struct tracepoint *) t;
    }

  printf_unfiltered ("No tracepoint number %d.\n", tpnum);
  return NULL;
}

void
print_recreate_thread (struct breakpoint *b, struct ui_file *fp)
{
  if (b->thread != -1)
    fprintf_unfiltered (fp, " thread %d", b->thread);

  if (b->task != 0)
    fprintf_unfiltered (fp, " task %d", b->task);

  fprintf_unfiltered (fp, "\n");
}

/* Save information on user settable breakpoints (watchpoints, etc) to
   a new script file named FILENAME.  If FILTER is non-NULL, call it
   on each breakpoint and only include the ones for which it returns
   non-zero.  */

static void
save_breakpoints (char *filename, int from_tty,
		  int (*filter) (const struct breakpoint *))
{
  struct breakpoint *tp;
  int any = 0;
  struct cleanup *cleanup;
  struct ui_file *fp;
  int extra_trace_bits = 0;

  if (filename == 0 || *filename == 0)
    error (_("Argument required (file name in which to save)"));

  /* See if we have anything to save.  */
  ALL_BREAKPOINTS (tp)
  {
    /* Skip internal and momentary breakpoints.  */
    if (!user_breakpoint_p (tp))
      continue;

    /* If we have a filter, only save the breakpoints it accepts.  */
    if (filter && !filter (tp))
      continue;

    any = 1;

    if (is_tracepoint (tp))
      {
	extra_trace_bits = 1;

	/* We can stop searching.  */
	break;
      }
  }

  if (!any)
    {
      warning (_("Nothing to save."));
      return;
    }

  filename = tilde_expand (filename);
  cleanup = make_cleanup (xfree, filename);
  fp = gdb_fopen (filename, "w");
  if (!fp)
    error (_("Unable to open file '%s' for saving (%s)"),
	   filename, safe_strerror (errno));
  make_cleanup_ui_file_delete (fp);

  if (extra_trace_bits)
    save_trace_state_variables (fp);

  ALL_BREAKPOINTS (tp)
  {
    /* Skip internal and momentary breakpoints.  */
    if (!user_breakpoint_p (tp))
      continue;

    /* If we have a filter, only save the breakpoints it accepts.  */
    if (filter && !filter (tp))
      continue;

    tp->ops->print_recreate (tp, fp);

    /* Note, we can't rely on tp->number for anything, as we can't
       assume the recreated breakpoint numbers will match.  Use $bpnum
       instead.  */

    if (tp->cond_string)
      fprintf_unfiltered (fp, "  condition $bpnum %s\n", tp->cond_string);

    if (tp->ignore_count)
      fprintf_unfiltered (fp, "  ignore $bpnum %d\n", tp->ignore_count);

    if (tp->type != bp_dprintf && tp->commands)
      {
	fprintf_unfiltered (fp, "  commands\n");
	
	ui_out_redirect (current_uiout, fp);
	TRY
	  {
	    print_command_lines (current_uiout, tp->commands->commands, 2);
	  }
	CATCH (ex, RETURN_MASK_ALL)
	  {
	    ui_out_redirect (current_uiout, NULL);
	    throw_exception (ex);
	  }
	END_CATCH

	ui_out_redirect (current_uiout, NULL);
	fprintf_unfiltered (fp, "  end\n");
      }

    if (tp->enable_state == bp_disabled)
      fprintf_unfiltered (fp, "disable $bpnum\n");

    /* If this is a multi-location breakpoint, check if the locations
       should be individually disabled.  Watchpoint locations are
       special, and not user visible.  */
    if (!is_watchpoint (tp) && tp->loc && tp->loc->next)
      {
	struct bp_location *loc;
	int n = 1;

	for (loc = tp->loc; loc != NULL; loc = loc->next, n++)
	  if (!loc->enabled)
	    fprintf_unfiltered (fp, "disable $bpnum.%d\n", n);
      }
  }

  if (extra_trace_bits && *default_collect)
    fprintf_unfiltered (fp, "set default-collect %s\n", default_collect);

  if (from_tty)
    printf_filtered (_("Saved to file '%s'.\n"), filename);
  do_cleanups (cleanup);
}

/* The `save breakpoints' command.  */

static void
save_breakpoints_command (char *args, int from_tty)
{
  save_breakpoints (args, from_tty, NULL);
}

/* The `save tracepoints' command.  */

static void
save_tracepoints_command (char *args, int from_tty)
{
  save_breakpoints (args, from_tty, is_tracepoint);
}

/* Create a vector of all tracepoints.  */

VEC(breakpoint_p) *
all_tracepoints (void)
{
  VEC(breakpoint_p) *tp_vec = 0;
  struct breakpoint *tp;

  ALL_TRACEPOINTS (tp)
  {
    VEC_safe_push (breakpoint_p, tp_vec, tp);
  }

  return tp_vec;
}


/* This help string is used to consolidate all the help string for specifying
   locations used by several commands.  */

#define LOCATION_HELP_STRING \
"Linespecs are colon-separated lists of location parameters, such as\n\
source filename, function name, label name, and line number.\n\
Example: To specify the start of a label named \"the_top\" in the\n\
function \"fact\" in the file \"factorial.c\", use\n\
\"factorial.c:fact:the_top\".\n\
\n\
Address locations begin with \"*\" and specify an exact address in the\n\
program.  Example: To specify the fourth byte past the start function\n\
\"main\", use \"*main + 4\".\n\
\n\
Explicit locations are similar to linespecs but use an option/argument\n\
syntax to specify location parameters.\n\
Example: To specify the start of the label named \"the_top\" in the\n\
function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\
-function fact -label the_top\".\n"

/* This help string is used for the break, hbreak, tbreak and thbreak
   commands.  It is defined as a macro to prevent duplication.
   COMMAND should be a string constant containing the name of the
   command.  */

#define BREAK_ARGS_HELP(command) \
command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\
PROBE_MODIFIER shall be present if the command is to be placed in a\n\
probe point.  Accepted values are `-probe' (for a generic, automatically\n\
guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\
`-probe-dtrace' (for a DTrace probe).\n\
LOCATION may be a linespec, address, or explicit location as described\n\
below.\n\
\n\
With no LOCATION, uses current execution address of the selected\n\
stack frame.  This is useful for breaking on return to a stack frame.\n\
\n\
THREADNUM is the number from \"info threads\".\n\
CONDITION is a boolean expression.\n\
\n" LOCATION_HELP_STRING "\n\
Multiple breakpoints at one place are permitted, and useful if their\n\
conditions are different.\n\
\n\
Do \"help breakpoints\" for info on other commands dealing with breakpoints."

/* List of subcommands for "catch".  */
static struct cmd_list_element *catch_cmdlist;

/* List of subcommands for "tcatch".  */
static struct cmd_list_element *tcatch_cmdlist;

void
add_catch_command (char *name, char *docstring,
		   cmd_sfunc_ftype *sfunc,
		   completer_ftype *completer,
		   void *user_data_catch,
		   void *user_data_tcatch)
{
  struct cmd_list_element *command;

  command = add_cmd (name, class_breakpoint, NULL, docstring,
		     &catch_cmdlist);
  set_cmd_sfunc (command, sfunc);
  set_cmd_context (command, user_data_catch);
  set_cmd_completer (command, completer);

  command = add_cmd (name, class_breakpoint, NULL, docstring,
		     &tcatch_cmdlist);
  set_cmd_sfunc (command, sfunc);
  set_cmd_context (command, user_data_tcatch);
  set_cmd_completer (command, completer);
}

static void
save_command (char *arg, int from_tty)
{
  printf_unfiltered (_("\"save\" must be followed by "
		       "the name of a save subcommand.\n"));
  help_list (save_cmdlist, "save ", all_commands, gdb_stdout);
}

struct breakpoint *
iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *),
			  void *data)
{
  struct breakpoint *b, *b_tmp;

  ALL_BREAKPOINTS_SAFE (b, b_tmp)
    {
      if ((*callback) (b, data))
	return b;
    }

  return NULL;
}

/* Zero if any of the breakpoint's locations could be a location where
   functions have been inlined, nonzero otherwise.  */

static int
is_non_inline_function (struct breakpoint *b)
{
  /* The shared library event breakpoint is set on the address of a
     non-inline function.  */
  if (b->type == bp_shlib_event)
    return 1;

  return 0;
}

/* Nonzero if the specified PC cannot be a location where functions
   have been inlined.  */

int
pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc,
			   const struct target_waitstatus *ws)
{
  struct breakpoint *b;
  struct bp_location *bl;

  ALL_BREAKPOINTS (b)
    {
      if (!is_non_inline_function (b))
	continue;

      for (bl = b->loc; bl != NULL; bl = bl->next)
	{
	  if (!bl->shlib_disabled
	      && bpstat_check_location (bl, aspace, pc, ws))
	    return 1;
	}
    }

  return 0;
}

/* Remove any references to OBJFILE which is going to be freed.  */

void
breakpoint_free_objfile (struct objfile *objfile)
{
  struct bp_location **locp, *loc;

  ALL_BP_LOCATIONS (loc, locp)
    if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile)
      loc->symtab = NULL;
}

void
initialize_breakpoint_ops (void)
{
  static int initialized = 0;

  struct breakpoint_ops *ops;

  if (initialized)
    return;
  initialized = 1;

  /* The breakpoint_ops structure to be inherit by all kinds of
     breakpoints (real breakpoints, i.e., user "break" breakpoints,
     internal and momentary breakpoints, etc.).  */
  ops = &bkpt_base_breakpoint_ops;
  *ops = base_breakpoint_ops;
  ops->re_set = bkpt_re_set;
  ops->insert_location = bkpt_insert_location;
  ops->remove_location = bkpt_remove_location;
  ops->breakpoint_hit = bkpt_breakpoint_hit;
  ops->create_sals_from_location = bkpt_create_sals_from_location;
  ops->create_breakpoints_sal = bkpt_create_breakpoints_sal;
  ops->decode_location = bkpt_decode_location;

  /* The breakpoint_ops structure to be used in regular breakpoints.  */
  ops = &bkpt_breakpoint_ops;
  *ops = bkpt_base_breakpoint_ops;
  ops->re_set = bkpt_re_set;
  ops->resources_needed = bkpt_resources_needed;
  ops->print_it = bkpt_print_it;
  ops->print_mention = bkpt_print_mention;
  ops->print_recreate = bkpt_print_recreate;

  /* Ranged breakpoints.  */
  ops = &ranged_breakpoint_ops;
  *ops = bkpt_breakpoint_ops;
  ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint;
  ops->resources_needed = resources_needed_ranged_breakpoint;
  ops->print_it = print_it_ranged_breakpoint;
  ops->print_one = print_one_ranged_breakpoint;
  ops->print_one_detail = print_one_detail_ranged_breakpoint;
  ops->print_mention = print_mention_ranged_breakpoint;
  ops->print_recreate = print_recreate_ranged_breakpoint;

  /* Internal breakpoints.  */
  ops = &internal_breakpoint_ops;
  *ops = bkpt_base_breakpoint_ops;
  ops->re_set = internal_bkpt_re_set;
  ops->check_status = internal_bkpt_check_status;
  ops->print_it = internal_bkpt_print_it;
  ops->print_mention = internal_bkpt_print_mention;

  /* Momentary breakpoints.  */
  ops = &momentary_breakpoint_ops;
  *ops = bkpt_base_breakpoint_ops;
  ops->re_set = momentary_bkpt_re_set;
  ops->check_status = momentary_bkpt_check_status;
  ops->print_it = momentary_bkpt_print_it;
  ops->print_mention = momentary_bkpt_print_mention;

  /* Momentary breakpoints for bp_longjmp and bp_exception.  */
  ops = &longjmp_breakpoint_ops;
  *ops = momentary_breakpoint_ops;
  ops->dtor = longjmp_bkpt_dtor;

  /* Probe breakpoints.  */
  ops = &bkpt_probe_breakpoint_ops;
  *ops = bkpt_breakpoint_ops;
  ops->insert_location = bkpt_probe_insert_location;
  ops->remove_location = bkpt_probe_remove_location;
  ops->create_sals_from_location = bkpt_probe_create_sals_from_location;
  ops->decode_location = bkpt_probe_decode_location;

  /* Watchpoints.  */
  ops = &watchpoint_breakpoint_ops;
  *ops = base_breakpoint_ops;
  ops->dtor = dtor_watchpoint;
  ops->re_set = re_set_watchpoint;
  ops->insert_location = insert_watchpoint;
  ops->remove_location = remove_watchpoint;
  ops->breakpoint_hit = breakpoint_hit_watchpoint;
  ops->check_status = check_status_watchpoint;
  ops->resources_needed = resources_needed_watchpoint;
  ops->works_in_software_mode = works_in_software_mode_watchpoint;
  ops->print_it = print_it_watchpoint;
  ops->print_mention = print_mention_watchpoint;
  ops->print_recreate = print_recreate_watchpoint;
  ops->explains_signal = explains_signal_watchpoint;

  /* Masked watchpoints.  */
  ops = &masked_watchpoint_breakpoint_ops;
  *ops = watchpoint_breakpoint_ops;
  ops->insert_location = insert_masked_watchpoint;
  ops->remove_location = remove_masked_watchpoint;
  ops->resources_needed = resources_needed_masked_watchpoint;
  ops->works_in_software_mode = works_in_software_mode_masked_watchpoint;
  ops->print_it = print_it_masked_watchpoint;
  ops->print_one_detail = print_one_detail_masked_watchpoint;
  ops->print_mention = print_mention_masked_watchpoint;
  ops->print_recreate = print_recreate_masked_watchpoint;

  /* Tracepoints.  */
  ops = &tracepoint_breakpoint_ops;
  *ops = base_breakpoint_ops;
  ops->re_set = tracepoint_re_set;
  ops->breakpoint_hit = tracepoint_breakpoint_hit;
  ops->print_one_detail = tracepoint_print_one_detail;
  ops->print_mention = tracepoint_print_mention;
  ops->print_recreate = tracepoint_print_recreate;
  ops->create_sals_from_location = tracepoint_create_sals_from_location;
  ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal;
  ops->decode_location = tracepoint_decode_location;

  /* Probe tracepoints.  */
  ops = &tracepoint_probe_breakpoint_ops;
  *ops = tracepoint_breakpoint_ops;
  ops->create_sals_from_location = tracepoint_probe_create_sals_from_location;
  ops->decode_location = tracepoint_probe_decode_location;

  /* Static tracepoints with marker (`-m').  */
  ops = &strace_marker_breakpoint_ops;
  *ops = tracepoint_breakpoint_ops;
  ops->create_sals_from_location = strace_marker_create_sals_from_location;
  ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal;
  ops->decode_location = strace_marker_decode_location;

  /* Fork catchpoints.  */
  ops = &catch_fork_breakpoint_ops;
  *ops = base_breakpoint_ops;
  ops->insert_location = insert_catch_fork;
  ops->remove_location = remove_catch_fork;
  ops->breakpoint_hit = breakpoint_hit_catch_fork;
  ops->print_it = print_it_catch_fork;
  ops->print_one = print_one_catch_fork;
  ops->print_mention = print_mention_catch_fork;
  ops->print_recreate = print_recreate_catch_fork;

  /* Vfork catchpoints.  */
  ops = &catch_vfork_breakpoint_ops;
  *ops = base_breakpoint_ops;
  ops->insert_location = insert_catch_vfork;
  ops->remove_location = remove_catch_vfork;
  ops->breakpoint_hit = breakpoint_hit_catch_vfork;
  ops->print_it = print_it_catch_vfork;
  ops->print_one = print_one_catch_vfork;
  ops->print_mention = print_mention_catch_vfork;
  ops->print_recreate = print_recreate_catch_vfork;

  /* Exec catchpoints.  */
  ops = &catch_exec_breakpoint_ops;
  *ops = base_breakpoint_ops;
  ops->dtor = dtor_catch_exec;
  ops->insert_location = insert_catch_exec;
  ops->remove_location = remove_catch_exec;
  ops->breakpoint_hit = breakpoint_hit_catch_exec;
  ops->print_it = print_it_catch_exec;
  ops->print_one = print_one_catch_exec;
  ops->print_mention = print_mention_catch_exec;
  ops->print_recreate = print_recreate_catch_exec;

  /* Solib-related catchpoints.  */
  ops = &catch_solib_breakpoint_ops;
  *ops = base_breakpoint_ops;
  ops->dtor = dtor_catch_solib;
  ops->insert_location = insert_catch_solib;
  ops->remove_location = remove_catch_solib;
  ops->breakpoint_hit = breakpoint_hit_catch_solib;
  ops->check_status = check_status_catch_solib;
  ops->print_it = print_it_catch_solib;
  ops->print_one = print_one_catch_solib;
  ops->print_mention = print_mention_catch_solib;
  ops->print_recreate = print_recreate_catch_solib;

  ops = &dprintf_breakpoint_ops;
  *ops = bkpt_base_breakpoint_ops;
  ops->re_set = dprintf_re_set;
  ops->resources_needed = bkpt_resources_needed;
  ops->print_it = bkpt_print_it;
  ops->print_mention = bkpt_print_mention;
  ops->print_recreate = dprintf_print_recreate;
  ops->after_condition_true = dprintf_after_condition_true;
  ops->breakpoint_hit = dprintf_breakpoint_hit;
}

/* Chain containing all defined "enable breakpoint" subcommands.  */

static struct cmd_list_element *enablebreaklist = NULL;

void
_initialize_breakpoint (void)
{
  struct cmd_list_element *c;

  initialize_breakpoint_ops ();

  observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib);
  observer_attach_free_objfile (disable_breakpoints_in_freed_objfile);
  observer_attach_memory_changed (invalidate_bp_value_on_memory_change);

  breakpoint_objfile_key
    = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes);

  breakpoint_chain = 0;
  /* Don't bother to call set_breakpoint_count.  $bpnum isn't useful
     before a breakpoint is set.  */
  breakpoint_count = 0;

  tracepoint_count = 0;

  add_com ("ignore", class_breakpoint, ignore_command, _("\
Set ignore-count of breakpoint number N to COUNT.\n\
Usage is `ignore N COUNT'."));

  add_com ("commands", class_breakpoint, commands_command, _("\
Set commands to be executed when a breakpoint is hit.\n\
Give breakpoint number as argument after \"commands\".\n\
With no argument, the targeted breakpoint is the last one set.\n\
The commands themselves follow starting on the next line.\n\
Type a line containing \"end\" to indicate the end of them.\n\
Give \"silent\" as the first line to make the breakpoint silent;\n\
then no output is printed when it is hit, except what the commands print."));

  c = add_com ("condition", class_breakpoint, condition_command, _("\
Specify breakpoint number N to break only if COND is true.\n\
Usage is `condition N COND', where N is an integer and COND is an\n\
expression to be evaluated whenever breakpoint N is reached."));
  set_cmd_completer (c, condition_completer);

  c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\
Set a temporary breakpoint.\n\
Like \"break\" except the breakpoint is only temporary,\n\
so it will be deleted when hit.  Equivalent to \"break\" followed\n\
by using \"enable delete\" on the breakpoint number.\n\
\n"
BREAK_ARGS_HELP ("tbreak")));
  set_cmd_completer (c, location_completer);

  c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\
Set a hardware assisted breakpoint.\n\
Like \"break\" except the breakpoint requires hardware support,\n\
some target hardware may not have this support.\n\
\n"
BREAK_ARGS_HELP ("hbreak")));
  set_cmd_completer (c, location_completer);

  c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\
Set a temporary hardware assisted breakpoint.\n\
Like \"hbreak\" except the breakpoint is only temporary,\n\
so it will be deleted when hit.\n\
\n"
BREAK_ARGS_HELP ("thbreak")));
  set_cmd_completer (c, location_completer);

  add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\
Enable some breakpoints.\n\
Give breakpoint numbers (separated by spaces) as arguments.\n\
With no subcommand, breakpoints are enabled until you command otherwise.\n\
This is used to cancel the effect of the \"disable\" command.\n\
With a subcommand you can enable temporarily."),
		  &enablelist, "enable ", 1, &cmdlist);

  add_com_alias ("en", "enable", class_breakpoint, 1);

  add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\
Enable some breakpoints.\n\
Give breakpoint numbers (separated by spaces) as arguments.\n\
This is used to cancel the effect of the \"disable\" command.\n\
May be abbreviated to simply \"enable\".\n"),
		   &enablebreaklist, "enable breakpoints ", 1, &enablelist);

  add_cmd ("once", no_class, enable_once_command, _("\
Enable breakpoints for one hit.  Give breakpoint numbers.\n\
If a breakpoint is hit while enabled in this fashion, it becomes disabled."),
	   &enablebreaklist);

  add_cmd ("delete", no_class, enable_delete_command, _("\
Enable breakpoints and delete when hit.  Give breakpoint numbers.\n\
If a breakpoint is hit while enabled in this fashion, it is deleted."),
	   &enablebreaklist);

  add_cmd ("count", no_class, enable_count_command, _("\
Enable breakpoints for COUNT hits.  Give count and then breakpoint numbers.\n\
If a breakpoint is hit while enabled in this fashion,\n\
the count is decremented; when it reaches zero, the breakpoint is disabled."),
	   &enablebreaklist);

  add_cmd ("delete", no_class, enable_delete_command, _("\
Enable breakpoints and delete when hit.  Give breakpoint numbers.\n\
If a breakpoint is hit while enabled in this fashion, it is deleted."),
	   &enablelist);

  add_cmd ("once", no_class, enable_once_command, _("\
Enable breakpoints for one hit.  Give breakpoint numbers.\n\
If a breakpoint is hit while enabled in this fashion, it becomes disabled."),
	   &enablelist);

  add_cmd ("count", no_class, enable_count_command, _("\
Enable breakpoints for COUNT hits.  Give count and then breakpoint numbers.\n\
If a breakpoint is hit while enabled in this fashion,\n\
the count is decremented; when it reaches zero, the breakpoint is disabled."),
	   &enablelist);

  add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\
Disable some breakpoints.\n\
Arguments are breakpoint numbers with spaces in between.\n\
To disable all breakpoints, give no argument.\n\
A disabled breakpoint is not forgotten, but has no effect until re-enabled."),
		  &disablelist, "disable ", 1, &cmdlist);
  add_com_alias ("dis", "disable", class_breakpoint, 1);
  add_com_alias ("disa", "disable", class_breakpoint, 1);

  add_cmd ("breakpoints", class_alias, disable_command, _("\
Disable some breakpoints.\n\
Arguments are breakpoint numbers with spaces in between.\n\
To disable all breakpoints, give no argument.\n\
A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\
This command may be abbreviated \"disable\"."),
	   &disablelist);

  add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\
Delete some breakpoints or auto-display expressions.\n\
Arguments are breakpoint numbers with spaces in between.\n\
To delete all breakpoints, give no argument.\n\
\n\
Also a prefix command for deletion of other GDB objects.\n\
The \"unset\" command is also an alias for \"delete\"."),
		  &deletelist, "delete ", 1, &cmdlist);
  add_com_alias ("d", "delete", class_breakpoint, 1);
  add_com_alias ("del", "delete", class_breakpoint, 1);

  add_cmd ("breakpoints", class_alias, delete_command, _("\
Delete some breakpoints or auto-display expressions.\n\
Arguments are breakpoint numbers with spaces in between.\n\
To delete all breakpoints, give no argument.\n\
This command may be abbreviated \"delete\"."),
	   &deletelist);

  add_com ("clear", class_breakpoint, clear_command, _("\
Clear breakpoint at specified location.\n\
Argument may be a linespec, explicit, or address location as described below.\n\
\n\
With no argument, clears all breakpoints in the line that the selected frame\n\
is executing in.\n"
"\n" LOCATION_HELP_STRING "\n\
See also the \"delete\" command which clears breakpoints by number."));
  add_com_alias ("cl", "clear", class_breakpoint, 1);

  c = add_com ("break", class_breakpoint, break_command, _("\
Set breakpoint at specified location.\n"
BREAK_ARGS_HELP ("break")));
  set_cmd_completer (c, location_completer);

  add_com_alias ("b", "break", class_run, 1);
  add_com_alias ("br", "break", class_run, 1);
  add_com_alias ("bre", "break", class_run, 1);
  add_com_alias ("brea", "break", class_run, 1);

  if (dbx_commands)
    {
      add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\
Break in function/address or break at a line in the current file."),
			     &stoplist, "stop ", 1, &cmdlist);
      add_cmd ("in", class_breakpoint, stopin_command,
	       _("Break in function or address."), &stoplist);
      add_cmd ("at", class_breakpoint, stopat_command,
	       _("Break at a line in the current file."), &stoplist);
      add_com ("status", class_info, breakpoints_info, _("\
Status of user-settable breakpoints, or breakpoint number NUMBER.\n\
The \"Type\" column indicates one of:\n\
\tbreakpoint     - normal breakpoint\n\
\twatchpoint     - watchpoint\n\
The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
the disposition of the breakpoint after it gets hit.  \"dis\" means that the\n\
breakpoint will be disabled.  The \"Address\" and \"What\" columns indicate the\n\
address and file/line number respectively.\n\
\n\
Convenience variable \"$_\" and default examine address for \"x\"\n\
are set to the address of the last breakpoint listed unless the command\n\
is prefixed with \"server \".\n\n\
Convenience variable \"$bpnum\" contains the number of the last\n\
breakpoint set."));
    }

  add_info ("breakpoints", breakpoints_info, _("\
Status of specified breakpoints (all user-settable breakpoints if no argument).\n\
The \"Type\" column indicates one of:\n\
\tbreakpoint     - normal breakpoint\n\
\twatchpoint     - watchpoint\n\
The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
the disposition of the breakpoint after it gets hit.  \"dis\" means that the\n\
breakpoint will be disabled.  The \"Address\" and \"What\" columns indicate the\n\
address and file/line number respectively.\n\
\n\
Convenience variable \"$_\" and default examine address for \"x\"\n\
are set to the address of the last breakpoint listed unless the command\n\
is prefixed with \"server \".\n\n\
Convenience variable \"$bpnum\" contains the number of the last\n\
breakpoint set."));

  add_info_alias ("b", "breakpoints", 1);

  add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\
Status of all breakpoints, or breakpoint number NUMBER.\n\
The \"Type\" column indicates one of:\n\
\tbreakpoint     - normal breakpoint\n\
\twatchpoint     - watchpoint\n\
\tlongjmp        - internal breakpoint used to step through longjmp()\n\
\tlongjmp resume - internal breakpoint at the target of longjmp()\n\
\tuntil          - internal breakpoint used by the \"until\" command\n\
\tfinish         - internal breakpoint used by the \"finish\" command\n\
The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\
the disposition of the breakpoint after it gets hit.  \"dis\" means that the\n\
breakpoint will be disabled.  The \"Address\" and \"What\" columns indicate the\n\
address and file/line number respectively.\n\
\n\
Convenience variable \"$_\" and default examine address for \"x\"\n\
are set to the address of the last breakpoint listed unless the command\n\
is prefixed with \"server \".\n\n\
Convenience variable \"$bpnum\" contains the number of the last\n\
breakpoint set."),
	   &maintenanceinfolist);

  add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\
Set catchpoints to catch events."),
		  &catch_cmdlist, "catch ",
		  0/*allow-unknown*/, &cmdlist);

  add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\
Set temporary catchpoints to catch events."),
		  &tcatch_cmdlist, "tcatch ",
		  0/*allow-unknown*/, &cmdlist);

  add_catch_command ("fork", _("Catch calls to fork."),
		     catch_fork_command_1,
                     NULL,
		     (void *) (uintptr_t) catch_fork_permanent,
		     (void *) (uintptr_t) catch_fork_temporary);
  add_catch_command ("vfork", _("Catch calls to vfork."),
		     catch_fork_command_1,
                     NULL,
		     (void *) (uintptr_t) catch_vfork_permanent,
		     (void *) (uintptr_t) catch_vfork_temporary);
  add_catch_command ("exec", _("Catch calls to exec."),
		     catch_exec_command_1,
                     NULL,
		     CATCH_PERMANENT,
		     CATCH_TEMPORARY);
  add_catch_command ("load", _("Catch loads of shared libraries.\n\
Usage: catch load [REGEX]\n\
If REGEX is given, only stop for libraries matching the regular expression."),
		     catch_load_command_1,
		     NULL,
		     CATCH_PERMANENT,
		     CATCH_TEMPORARY);
  add_catch_command ("unload", _("Catch unloads of shared libraries.\n\
Usage: catch unload [REGEX]\n\
If REGEX is given, only stop for libraries matching the regular expression."),
		     catch_unload_command_1,
		     NULL,
		     CATCH_PERMANENT,
		     CATCH_TEMPORARY);

  c = add_com ("watch", class_breakpoint, watch_command, _("\
Set a watchpoint for an expression.\n\
Usage: watch [-l|-location] EXPRESSION\n\
A watchpoint stops execution of your program whenever the value of\n\
an expression changes.\n\
If -l or -location is given, this evaluates EXPRESSION and watches\n\
the memory to which it refers."));
  set_cmd_completer (c, expression_completer);

  c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\
Set a read watchpoint for an expression.\n\
Usage: rwatch [-l|-location] EXPRESSION\n\
A watchpoint stops execution of your program whenever the value of\n\
an expression is read.\n\
If -l or -location is given, this evaluates EXPRESSION and watches\n\
the memory to which it refers."));
  set_cmd_completer (c, expression_completer);

  c = add_com ("awatch", class_breakpoint, awatch_command, _("\
Set a watchpoint for an expression.\n\
Usage: awatch [-l|-location] EXPRESSION\n\
A watchpoint stops execution of your program whenever the value of\n\
an expression is either read or written.\n\
If -l or -location is given, this evaluates EXPRESSION and watches\n\
the memory to which it refers."));
  set_cmd_completer (c, expression_completer);

  add_info ("watchpoints", watchpoints_info, _("\
Status of specified watchpoints (all watchpoints if no argument)."));

  /* XXX: cagney/2005-02-23: This should be a boolean, and should
     respond to changes - contrary to the description.  */
  add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support,
			    &can_use_hw_watchpoints, _("\
Set debugger's willingness to use watchpoint hardware."), _("\
Show debugger's willingness to use watchpoint hardware."), _("\
If zero, gdb will not use hardware for new watchpoints, even if\n\
such is available.  (However, any hardware watchpoints that were\n\
created before setting this to nonzero, will continue to use watchpoint\n\
hardware.)"),
			    NULL,
			    show_can_use_hw_watchpoints,
			    &setlist, &showlist);

  can_use_hw_watchpoints = 1;

  /* Tracepoint manipulation commands.  */

  c = add_com ("trace", class_breakpoint, trace_command, _("\
Set a tracepoint at specified location.\n\
\n"
BREAK_ARGS_HELP ("trace") "\n\
Do \"help tracepoints\" for info on other tracepoint commands."));
  set_cmd_completer (c, location_completer);

  add_com_alias ("tp", "trace", class_alias, 0);
  add_com_alias ("tr", "trace", class_alias, 1);
  add_com_alias ("tra", "trace", class_alias, 1);
  add_com_alias ("trac", "trace", class_alias, 1);

  c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\
Set a fast tracepoint at specified location.\n\
\n"
BREAK_ARGS_HELP ("ftrace") "\n\
Do \"help tracepoints\" for info on other tracepoint commands."));
  set_cmd_completer (c, location_completer);

  c = add_com ("strace", class_breakpoint, strace_command, _("\
Set a static tracepoint at location or marker.\n\
\n\
strace [LOCATION] [if CONDITION]\n\
LOCATION may be a linespec, explicit, or address location (described below) \n\
or -m MARKER_ID.\n\n\
If a marker id is specified, probe the marker with that name.  With\n\
no LOCATION, uses current execution address of the selected stack frame.\n\
Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\
This collects arbitrary user data passed in the probe point call to the\n\
tracing library.  You can inspect it when analyzing the trace buffer,\n\
by printing the $_sdata variable like any other convenience variable.\n\
\n\
CONDITION is a boolean expression.\n\
\n" LOCATION_HELP_STRING "\n\
Multiple tracepoints at one place are permitted, and useful if their\n\
conditions are different.\n\
\n\
Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\
Do \"help tracepoints\" for info on other tracepoint commands."));
  set_cmd_completer (c, location_completer);

  add_info ("tracepoints", tracepoints_info, _("\
Status of specified tracepoints (all tracepoints if no argument).\n\
Convenience variable \"$tpnum\" contains the number of the\n\
last tracepoint set."));

  add_info_alias ("tp", "tracepoints", 1);

  add_cmd ("tracepoints", class_trace, delete_trace_command, _("\
Delete specified tracepoints.\n\
Arguments are tracepoint numbers, separated by spaces.\n\
No argument means delete all tracepoints."),
	   &deletelist);
  add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist);

  c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\
Disable specified tracepoints.\n\
Arguments are tracepoint numbers, separated by spaces.\n\
No argument means disable all tracepoints."),
	   &disablelist);
  deprecate_cmd (c, "disable");

  c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\
Enable specified tracepoints.\n\
Arguments are tracepoint numbers, separated by spaces.\n\
No argument means enable all tracepoints."),
	   &enablelist);
  deprecate_cmd (c, "enable");

  add_com ("passcount", class_trace, trace_pass_command, _("\
Set the passcount for a tracepoint.\n\
The trace will end when the tracepoint has been passed 'count' times.\n\
Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\
if TPNUM is omitted, passcount refers to the last tracepoint defined."));

  add_prefix_cmd ("save", class_breakpoint, save_command,
		  _("Save breakpoint definitions as a script."),
		  &save_cmdlist, "save ",
		  0/*allow-unknown*/, &cmdlist);

  c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\
Save current breakpoint definitions as a script.\n\
This includes all types of breakpoints (breakpoints, watchpoints,\n\
catchpoints, tracepoints).  Use the 'source' command in another debug\n\
session to restore them."),
	       &save_cmdlist);
  set_cmd_completer (c, filename_completer);

  c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\
Save current tracepoint definitions as a script.\n\
Use the 'source' command in another debug session to restore them."),
	       &save_cmdlist);
  set_cmd_completer (c, filename_completer);

  c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0);
  deprecate_cmd (c, "save tracepoints");

  add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\
Breakpoint specific settings\n\
Configure various breakpoint-specific variables such as\n\
pending breakpoint behavior"),
		  &breakpoint_set_cmdlist, "set breakpoint ",
		  0/*allow-unknown*/, &setlist);
  add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\
Breakpoint specific settings\n\
Configure various breakpoint-specific variables such as\n\
pending breakpoint behavior"),
		  &breakpoint_show_cmdlist, "show breakpoint ",
		  0/*allow-unknown*/, &showlist);

  add_setshow_auto_boolean_cmd ("pending", no_class,
				&pending_break_support, _("\
Set debugger's behavior regarding pending breakpoints."), _("\
Show debugger's behavior regarding pending breakpoints."), _("\
If on, an unrecognized breakpoint location will cause gdb to create a\n\
pending breakpoint.  If off, an unrecognized breakpoint location results in\n\
an error.  If auto, an unrecognized breakpoint location results in a\n\
user-query to see if a pending breakpoint should be created."),
				NULL,
				show_pending_break_support,
				&breakpoint_set_cmdlist,
				&breakpoint_show_cmdlist);

  pending_break_support = AUTO_BOOLEAN_AUTO;

  add_setshow_boolean_cmd ("auto-hw", no_class,
			   &automatic_hardware_breakpoints, _("\
Set automatic usage of hardware breakpoints."), _("\
Show automatic usage of hardware breakpoints."), _("\
If set, the debugger will automatically use hardware breakpoints for\n\
breakpoints set with \"break\" but falling in read-only memory.  If not set,\n\
a warning will be emitted for such breakpoints."),
			   NULL,
			   show_automatic_hardware_breakpoints,
			   &breakpoint_set_cmdlist,
			   &breakpoint_show_cmdlist);

  add_setshow_boolean_cmd ("always-inserted", class_support,
			   &always_inserted_mode, _("\
Set mode for inserting breakpoints."), _("\
Show mode for inserting breakpoints."), _("\
When this mode is on, breakpoints are inserted immediately as soon as\n\
they're created, kept inserted even when execution stops, and removed\n\
only when the user deletes them.  When this mode is off (the default),\n\
breakpoints are inserted only when execution continues, and removed\n\
when execution stops."),
				NULL,
				&show_always_inserted_mode,
				&breakpoint_set_cmdlist,
				&breakpoint_show_cmdlist);

  add_setshow_enum_cmd ("condition-evaluation", class_breakpoint,
			condition_evaluation_enums,
			&condition_evaluation_mode_1, _("\
Set mode of breakpoint condition evaluation."), _("\
Show mode of breakpoint condition evaluation."), _("\
When this is set to \"host\", breakpoint conditions will be\n\
evaluated on the host's side by GDB.  When it is set to \"target\",\n\
breakpoint conditions will be downloaded to the target (if the target\n\
supports such feature) and conditions will be evaluated on the target's side.\n\
If this is set to \"auto\" (default), this will be automatically set to\n\
\"target\" if it supports condition evaluation, otherwise it will\n\
be set to \"gdb\""),
			   &set_condition_evaluation_mode,
			   &show_condition_evaluation_mode,
			   &breakpoint_set_cmdlist,
			   &breakpoint_show_cmdlist);

  add_com ("break-range", class_breakpoint, break_range_command, _("\
Set a breakpoint for an address range.\n\
break-range START-LOCATION, END-LOCATION\n\
where START-LOCATION and END-LOCATION can be one of the following:\n\
  LINENUM, for that line in the current file,\n\
  FILE:LINENUM, for that line in that file,\n\
  +OFFSET, for that number of lines after the current line\n\
           or the start of the range\n\
  FUNCTION, for the first line in that function,\n\
  FILE:FUNCTION, to distinguish among like-named static functions.\n\
  *ADDRESS, for the instruction at that address.\n\
\n\
The breakpoint will stop execution of the inferior whenever it executes\n\
an instruction at any address within the [START-LOCATION, END-LOCATION]\n\
range (including START-LOCATION and END-LOCATION)."));

  c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\
Set a dynamic printf at specified location.\n\
dprintf location,format string,arg1,arg2,...\n\
location may be a linespec, explicit, or address location.\n"
"\n" LOCATION_HELP_STRING));
  set_cmd_completer (c, location_completer);

  add_setshow_enum_cmd ("dprintf-style", class_support,
			dprintf_style_enums, &dprintf_style, _("\
Set the style of usage for dynamic printf."), _("\
Show the style of usage for dynamic printf."), _("\
This setting chooses how GDB will do a dynamic printf.\n\
If the value is \"gdb\", then the printing is done by GDB to its own\n\
console, as with the \"printf\" command.\n\
If the value is \"call\", the print is done by calling a function in your\n\
program; by default printf(), but you can choose a different function or\n\
output stream by setting dprintf-function and dprintf-channel."),
			update_dprintf_commands, NULL,
			&setlist, &showlist);

  dprintf_function = xstrdup ("printf");
  add_setshow_string_cmd ("dprintf-function", class_support,
			  &dprintf_function, _("\
Set the function to use for dynamic printf"), _("\
Show the function to use for dynamic printf"), NULL,
			  update_dprintf_commands, NULL,
			  &setlist, &showlist);

  dprintf_channel = xstrdup ("");
  add_setshow_string_cmd ("dprintf-channel", class_support,
			  &dprintf_channel, _("\
Set the channel to use for dynamic printf"), _("\
Show the channel to use for dynamic printf"), NULL,
			  update_dprintf_commands, NULL,
			  &setlist, &showlist);

  add_setshow_boolean_cmd ("disconnected-dprintf", no_class,
			   &disconnected_dprintf, _("\
Set whether dprintf continues after GDB disconnects."), _("\
Show whether dprintf continues after GDB disconnects."), _("\
Use this to let dprintf commands continue to hit and produce output\n\
even if GDB disconnects or detaches from the target."),
			   NULL,
			   NULL,
			   &setlist, &showlist);

  add_com ("agent-printf", class_vars, agent_printf_command, _("\
agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\
(target agent only) This is useful for formatted output in user-defined commands."));

  automatic_hardware_breakpoints = 1;

  observer_attach_about_to_proceed (breakpoint_about_to_proceed);
  observer_attach_thread_exit (remove_threaded_breakpoints);
}