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
|
/* Parser for linespec for the GNU debugger, GDB.
Copyright (C) 1986-2023 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 "symtab.h"
#include "frame.h"
#include "command.h"
#include "symfile.h"
#include "objfiles.h"
#include "source.h"
#include "demangle.h"
#include "value.h"
#include "completer.h"
#include "cp-abi.h"
#include "cp-support.h"
#include "parser-defs.h"
#include "block.h"
#include "objc-lang.h"
#include "linespec.h"
#include "language.h"
#include "interps.h"
#include "mi/mi-cmds.h"
#include "target.h"
#include "arch-utils.h"
#include <ctype.h>
#include "cli/cli-utils.h"
#include "filenames.h"
#include "ada-lang.h"
#include "stack.h"
#include "location.h"
#include "gdbsupport/function-view.h"
#include "gdbsupport/def-vector.h"
#include <algorithm>
#include "inferior.h"
/* An enumeration of the various things a user might attempt to
complete for a linespec location. */
enum class linespec_complete_what
{
/* Nothing, no possible completion. */
NOTHING,
/* A function/method name. Due to ambiguity between
(gdb) b source[TAB]
source_file.c
source_function
this can also indicate a source filename, iff we haven't seen a
separate source filename component, as in "b source.c:function". */
FUNCTION,
/* A label symbol. E.g., break file.c:function:LABEL. */
LABEL,
/* An expression. E.g., "break foo if EXPR", or "break *EXPR". */
EXPRESSION,
/* A linespec keyword ("if"/"thread"/"task"/"-force-condition").
E.g., "break func threa<tab>". */
KEYWORD,
};
/* An address entry is used to ensure that any given location is only
added to the result a single time. It holds an address and the
program space from which the address came. */
struct address_entry
{
struct program_space *pspace;
CORE_ADDR addr;
};
/* A linespec. Elements of this structure are filled in by a parser
(either parse_linespec or some other function). The structure is
then converted into SALs by convert_linespec_to_sals. */
struct linespec
{
/* An explicit location spec describing the SaLs. */
explicit_location_spec explicit_loc;
/* The list of symtabs to search to which to limit the search.
If explicit.SOURCE_FILENAME is NULL (no user-specified filename),
FILE_SYMTABS should contain one single NULL member. This will cause the
code to use the default symtab. */
std::vector<symtab *> file_symtabs;
/* A list of matching function symbols and minimal symbols. Both lists
may be empty if no matching symbols were found. */
std::vector<block_symbol> function_symbols;
std::vector<bound_minimal_symbol> minimal_symbols;
/* A structure of matching label symbols and the corresponding
function symbol in which the label was found. Both may be empty
or both must be non-empty. */
struct
{
std::vector<block_symbol> label_symbols;
std::vector<block_symbol> function_symbols;
} labels;
};
/* A canonical linespec represented as a symtab-related string.
Each entry represents the "SYMTAB:SUFFIX" linespec string.
SYMTAB can be converted for example by symtab_to_fullname or
symtab_to_filename_for_display as needed. */
struct linespec_canonical_name
{
/* Remaining text part of the linespec string. */
char *suffix;
/* If NULL then SUFFIX is the whole linespec string. */
struct symtab *symtab;
};
/* An instance of this is used to keep all state while linespec
operates. This instance is passed around as a 'this' pointer to
the various implementation methods. */
struct linespec_state
{
/* The language in use during linespec processing. */
const struct language_defn *language;
/* The program space as seen when the module was entered. */
struct program_space *program_space;
/* If not NULL, the search is restricted to just this program
space. */
struct program_space *search_pspace;
/* The default symtab to use, if no other symtab is specified. */
struct symtab *default_symtab;
/* The default line to use. */
int default_line;
/* The 'funfirstline' value that was passed in to decode_line_1 or
decode_line_full. */
int funfirstline;
/* Nonzero if we are running in 'list' mode; see decode_line_list. */
int list_mode;
/* The 'canonical' value passed to decode_line_full, or NULL. */
struct linespec_result *canonical;
/* Canonical strings that mirror the std::vector<symtab_and_line> result. */
struct linespec_canonical_name *canonical_names;
/* This is a set of address_entry objects which is used to prevent
duplicate symbols from being entered into the result. */
htab_t addr_set;
/* Are we building a linespec? */
int is_linespec;
};
/* This is a helper object that is used when collecting symbols into a
result. */
struct collect_info
{
/* The linespec object in use. */
struct linespec_state *state;
/* A list of symtabs to which to restrict matches. */
const std::vector<symtab *> *file_symtabs;
/* The result being accumulated. */
struct
{
std::vector<block_symbol> *symbols;
std::vector<bound_minimal_symbol> *minimal_symbols;
} result;
/* Possibly add a symbol to the results. */
virtual bool add_symbol (block_symbol *bsym);
};
bool
collect_info::add_symbol (block_symbol *bsym)
{
/* In list mode, add all matching symbols, regardless of class.
This allows the user to type "list a_global_variable". */
if (bsym->symbol->aclass () == LOC_BLOCK || this->state->list_mode)
this->result.symbols->push_back (*bsym);
/* Continue iterating. */
return true;
}
/* Custom collect_info for symbol_searcher. */
struct symbol_searcher_collect_info
: collect_info
{
bool add_symbol (block_symbol *bsym) override
{
/* Add everything. */
this->result.symbols->push_back (*bsym);
/* Continue iterating. */
return true;
}
};
/* Token types */
enum linespec_token_type
{
/* A keyword */
LSTOKEN_KEYWORD = 0,
/* A colon "separator" */
LSTOKEN_COLON,
/* A string */
LSTOKEN_STRING,
/* A number */
LSTOKEN_NUMBER,
/* A comma */
LSTOKEN_COMMA,
/* EOI (end of input) */
LSTOKEN_EOI,
/* Consumed token */
LSTOKEN_CONSUMED
};
/* List of keywords. This is NULL-terminated so that it can be used
as enum completer. */
const char * const linespec_keywords[] = { "if", "thread", "task", "-force-condition", NULL };
#define IF_KEYWORD_INDEX 0
#define FORCE_KEYWORD_INDEX 3
/* A token of the linespec lexer */
struct linespec_token
{
/* The type of the token */
linespec_token_type type;
/* Data for the token */
union
{
/* A string, given as a stoken */
struct stoken string;
/* A keyword */
const char *keyword;
} data;
};
#define LS_TOKEN_STOKEN(TOK) (TOK).data.string
#define LS_TOKEN_KEYWORD(TOK) (TOK).data.keyword
/* An instance of the linespec parser. */
struct linespec_parser
{
linespec_parser (int flags, const struct language_defn *language,
struct program_space *search_pspace,
struct symtab *default_symtab,
int default_line,
struct linespec_result *canonical);
~linespec_parser ();
DISABLE_COPY_AND_ASSIGN (linespec_parser);
/* Lexer internal data */
struct
{
/* Save head of input stream. */
const char *saved_arg;
/* Head of the input stream. */
const char *stream;
#define PARSER_STREAM(P) ((P)->lexer.stream)
/* The current token. */
linespec_token current;
} lexer {};
/* Is the entire linespec quote-enclosed? */
int is_quote_enclosed = 0;
/* The state of the parse. */
struct linespec_state state {};
#define PARSER_STATE(PPTR) (&(PPTR)->state)
/* The result of the parse. */
linespec result;
#define PARSER_RESULT(PPTR) (&(PPTR)->result)
/* What the parser believes the current word point should complete
to. */
linespec_complete_what complete_what = linespec_complete_what::NOTHING;
/* The completion word point. The parser advances this as it skips
tokens. At some point the input string will end or parsing will
fail, and then we attempt completion at the captured completion
word point, interpreting the string at completion_word as
COMPLETE_WHAT. */
const char *completion_word = nullptr;
/* If the current token was a quoted string, then this is the
quoting character (either " or '). */
int completion_quote_char = 0;
/* If the current token was a quoted string, then this points at the
end of the quoted string. */
const char *completion_quote_end = nullptr;
/* If parsing for completion, then this points at the completion
tracker. Otherwise, this is NULL. */
struct completion_tracker *completion_tracker = nullptr;
};
/* A convenience macro for accessing the explicit location spec result
of the parser. */
#define PARSER_EXPLICIT(PPTR) (&PARSER_RESULT ((PPTR))->explicit_loc)
/* Prototypes for local functions. */
static void iterate_over_file_blocks
(struct symtab *symtab, const lookup_name_info &name,
domain_enum domain,
gdb::function_view<symbol_found_callback_ftype> callback);
static void initialize_defaults (struct symtab **default_symtab,
int *default_line);
CORE_ADDR linespec_expression_to_pc (const char **exp_ptr);
static std::vector<symtab_and_line> decode_objc (struct linespec_state *self,
linespec *ls,
const char *arg);
static std::vector<symtab *> symtabs_from_filename
(const char *, struct program_space *pspace);
static std::vector<block_symbol> find_label_symbols
(struct linespec_state *self,
const std::vector<block_symbol> &function_symbols,
std::vector<block_symbol> *label_funcs_ret,
const char *name, bool completion_mode = false);
static void find_linespec_symbols (struct linespec_state *self,
const std::vector<symtab *> &file_symtabs,
const char *name,
symbol_name_match_type name_match_type,
std::vector<block_symbol> *symbols,
std::vector<bound_minimal_symbol> *minsyms);
static struct line_offset
linespec_parse_variable (struct linespec_state *self,
const char *variable);
static int symbol_to_sal (struct symtab_and_line *result,
int funfirstline, struct symbol *sym);
static void add_matching_symbols_to_info (const char *name,
symbol_name_match_type name_match_type,
enum search_domain search_domain,
struct collect_info *info,
struct program_space *pspace);
static void add_all_symbol_names_from_pspace
(struct collect_info *info, struct program_space *pspace,
const std::vector<const char *> &names, enum search_domain search_domain);
static std::vector<symtab *>
collect_symtabs_from_filename (const char *file,
struct program_space *pspace);
static std::vector<symtab_and_line> decode_digits_ordinary
(struct linespec_state *self,
linespec *ls,
int line,
linetable_entry **best_entry);
static std::vector<symtab_and_line> decode_digits_list_mode
(struct linespec_state *self,
linespec *ls,
struct symtab_and_line val);
static void minsym_found (struct linespec_state *self, struct objfile *objfile,
struct minimal_symbol *msymbol,
std::vector<symtab_and_line> *result);
static bool compare_symbols (const block_symbol &a, const block_symbol &b);
static bool compare_msymbols (const bound_minimal_symbol &a,
const bound_minimal_symbol &b);
/* Permitted quote characters for the parser. This is different from the
completer's quote characters to allow backward compatibility with the
previous parser. */
static const char linespec_quote_characters[] = "\"\'";
/* Lexer functions. */
/* Lex a number from the input in PARSER. This only supports
decimal numbers.
Return true if input is decimal numbers. Return false if not. */
static int
linespec_lexer_lex_number (linespec_parser *parser, linespec_token *tokenp)
{
tokenp->type = LSTOKEN_NUMBER;
LS_TOKEN_STOKEN (*tokenp).length = 0;
LS_TOKEN_STOKEN (*tokenp).ptr = PARSER_STREAM (parser);
/* Keep any sign at the start of the stream. */
if (*PARSER_STREAM (parser) == '+' || *PARSER_STREAM (parser) == '-')
{
++LS_TOKEN_STOKEN (*tokenp).length;
++(PARSER_STREAM (parser));
}
while (isdigit (*PARSER_STREAM (parser)))
{
++LS_TOKEN_STOKEN (*tokenp).length;
++(PARSER_STREAM (parser));
}
/* If the next character in the input buffer is not a space, comma,
quote, or colon, this input does not represent a number. */
if (*PARSER_STREAM (parser) != '\0'
&& !isspace (*PARSER_STREAM (parser)) && *PARSER_STREAM (parser) != ','
&& *PARSER_STREAM (parser) != ':'
&& !strchr (linespec_quote_characters, *PARSER_STREAM (parser)))
{
PARSER_STREAM (parser) = LS_TOKEN_STOKEN (*tokenp).ptr;
return 0;
}
return 1;
}
/* See linespec.h. */
const char *
linespec_lexer_lex_keyword (const char *p)
{
int i;
if (p != NULL)
{
for (i = 0; linespec_keywords[i] != NULL; ++i)
{
int len = strlen (linespec_keywords[i]);
/* If P begins with
- "thread" or "task" and the next character is
whitespace, we may have found a keyword. It is only a
keyword if it is not followed by another keyword.
- "-force-condition", the next character may be EOF
since this keyword does not take any arguments. Otherwise,
it should be followed by a keyword.
- "if", ALWAYS stop the lexer, since it is not possible to
predict what is going to appear in the condition, which can
only be parsed after SaLs have been found. */
if (strncmp (p, linespec_keywords[i], len) == 0)
{
int j;
if (i == FORCE_KEYWORD_INDEX && p[len] == '\0')
return linespec_keywords[i];
if (!isspace (p[len]))
continue;
if (i == FORCE_KEYWORD_INDEX)
{
p += len;
p = skip_spaces (p);
for (j = 0; linespec_keywords[j] != NULL; ++j)
{
int nextlen = strlen (linespec_keywords[j]);
if (strncmp (p, linespec_keywords[j], nextlen) == 0
&& isspace (p[nextlen]))
return linespec_keywords[i];
}
}
else if (i != IF_KEYWORD_INDEX)
{
/* We matched a "thread" or "task". */
p += len;
p = skip_spaces (p);
for (j = 0; linespec_keywords[j] != NULL; ++j)
{
int nextlen = strlen (linespec_keywords[j]);
if (strncmp (p, linespec_keywords[j], nextlen) == 0
&& isspace (p[nextlen]))
return NULL;
}
}
return linespec_keywords[i];
}
}
}
return NULL;
}
/* See description in linespec.h. */
int
is_ada_operator (const char *string)
{
const struct ada_opname_map *mapping;
for (mapping = ada_opname_table;
mapping->encoded != NULL
&& !startswith (string, mapping->decoded); ++mapping)
;
return mapping->decoded == NULL ? 0 : strlen (mapping->decoded);
}
/* Find QUOTE_CHAR in STRING, accounting for the ':' terminal. Return
the location of QUOTE_CHAR, or NULL if not found. */
static const char *
skip_quote_char (const char *string, char quote_char)
{
const char *p, *last;
p = last = find_toplevel_char (string, quote_char);
while (p && *p != '\0' && *p != ':')
{
p = find_toplevel_char (p, quote_char);
if (p != NULL)
last = p++;
}
return last;
}
/* Make a writable copy of the string given in TOKEN, trimming
any trailing whitespace. */
static gdb::unique_xmalloc_ptr<char>
copy_token_string (linespec_token token)
{
const char *str, *s;
if (token.type == LSTOKEN_KEYWORD)
return make_unique_xstrdup (LS_TOKEN_KEYWORD (token));
str = LS_TOKEN_STOKEN (token).ptr;
s = remove_trailing_whitespace (str, str + LS_TOKEN_STOKEN (token).length);
return gdb::unique_xmalloc_ptr<char> (savestring (str, s - str));
}
/* Does P represent the end of a quote-enclosed linespec? */
static int
is_closing_quote_enclosed (const char *p)
{
if (strchr (linespec_quote_characters, *p))
++p;
p = skip_spaces ((char *) p);
return (*p == '\0' || linespec_lexer_lex_keyword (p));
}
/* Find the end of the parameter list that starts with *INPUT.
This helper function assists with lexing string segments
which might contain valid (non-terminating) commas. */
static const char *
find_parameter_list_end (const char *input)
{
char end_char, start_char;
int depth;
const char *p;
start_char = *input;
if (start_char == '(')
end_char = ')';
else if (start_char == '<')
end_char = '>';
else
return NULL;
p = input;
depth = 0;
while (*p)
{
if (*p == start_char)
++depth;
else if (*p == end_char)
{
if (--depth == 0)
{
++p;
break;
}
}
++p;
}
return p;
}
/* If the [STRING, STRING_LEN) string ends with what looks like a
keyword, return the keyword start offset in STRING. Return -1
otherwise. */
static size_t
string_find_incomplete_keyword_at_end (const char * const *keywords,
const char *string, size_t string_len)
{
const char *end = string + string_len;
const char *p = end;
while (p > string && *p != ' ')
--p;
if (p > string)
{
p++;
size_t len = end - p;
for (size_t i = 0; keywords[i] != NULL; ++i)
if (strncmp (keywords[i], p, len) == 0)
return p - string;
}
return -1;
}
/* Lex a string from the input in PARSER. */
static linespec_token
linespec_lexer_lex_string (linespec_parser *parser)
{
linespec_token token;
const char *start = PARSER_STREAM (parser);
token.type = LSTOKEN_STRING;
/* If the input stream starts with a quote character, skip to the next
quote character, regardless of the content. */
if (strchr (linespec_quote_characters, *PARSER_STREAM (parser)))
{
const char *end;
char quote_char = *PARSER_STREAM (parser);
/* Special case: Ada operators. */
if (PARSER_STATE (parser)->language->la_language == language_ada
&& quote_char == '\"')
{
int len = is_ada_operator (PARSER_STREAM (parser));
if (len != 0)
{
/* The input is an Ada operator. Return the quoted string
as-is. */
LS_TOKEN_STOKEN (token).ptr = PARSER_STREAM (parser);
LS_TOKEN_STOKEN (token).length = len;
PARSER_STREAM (parser) += len;
return token;
}
/* The input does not represent an Ada operator -- fall through
to normal quoted string handling. */
}
/* Skip past the beginning quote. */
++(PARSER_STREAM (parser));
/* Mark the start of the string. */
LS_TOKEN_STOKEN (token).ptr = PARSER_STREAM (parser);
/* Skip to the ending quote. */
end = skip_quote_char (PARSER_STREAM (parser), quote_char);
/* This helps the completer mode decide whether we have a
complete string. */
parser->completion_quote_char = quote_char;
parser->completion_quote_end = end;
/* Error if the input did not terminate properly, unless in
completion mode. */
if (end == NULL)
{
if (parser->completion_tracker == NULL)
error (_("unmatched quote"));
/* In completion mode, we'll try to complete the incomplete
token. */
token.type = LSTOKEN_STRING;
while (*PARSER_STREAM (parser) != '\0')
PARSER_STREAM (parser)++;
LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - 1 - start;
}
else
{
/* Skip over the ending quote and mark the length of the string. */
PARSER_STREAM (parser) = (char *) ++end;
LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - 2 - start;
}
}
else
{
const char *p;
/* Otherwise, only identifier characters are permitted.
Spaces are the exception. In general, we keep spaces,
but only if the next characters in the input do not resolve
to one of the keywords.
This allows users to forgo quoting CV-qualifiers, template arguments,
and similar common language constructs. */
while (1)
{
if (isspace (*PARSER_STREAM (parser)))
{
p = skip_spaces (PARSER_STREAM (parser));
/* When we get here we know we've found something followed by
a space (we skip over parens and templates below).
So if we find a keyword now, we know it is a keyword and not,
say, a function name. */
if (linespec_lexer_lex_keyword (p) != NULL)
{
LS_TOKEN_STOKEN (token).ptr = start;
LS_TOKEN_STOKEN (token).length
= PARSER_STREAM (parser) - start;
return token;
}
/* Advance past the whitespace. */
PARSER_STREAM (parser) = p;
}
/* If the next character is EOI or (single) ':', the
string is complete; return the token. */
if (*PARSER_STREAM (parser) == 0)
{
LS_TOKEN_STOKEN (token).ptr = start;
LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - start;
return token;
}
else if (PARSER_STREAM (parser)[0] == ':')
{
/* Do not tokenize the C++ scope operator. */
if (PARSER_STREAM (parser)[1] == ':')
++(PARSER_STREAM (parser));
/* Do not tokenize ABI tags such as "[abi:cxx11]". */
else if (PARSER_STREAM (parser) - start > 4
&& startswith (PARSER_STREAM (parser) - 4, "[abi"))
{
/* Nothing. */
}
/* Do not tokenify if the input length so far is one
(i.e, a single-letter drive name) and the next character
is a directory separator. This allows Windows-style
paths to be recognized as filenames without quoting it. */
else if ((PARSER_STREAM (parser) - start) != 1
|| !IS_DIR_SEPARATOR (PARSER_STREAM (parser)[1]))
{
LS_TOKEN_STOKEN (token).ptr = start;
LS_TOKEN_STOKEN (token).length
= PARSER_STREAM (parser) - start;
return token;
}
}
/* Special case: permit quote-enclosed linespecs. */
else if (parser->is_quote_enclosed
&& strchr (linespec_quote_characters,
*PARSER_STREAM (parser))
&& is_closing_quote_enclosed (PARSER_STREAM (parser)))
{
LS_TOKEN_STOKEN (token).ptr = start;
LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - start;
return token;
}
/* Because commas may terminate a linespec and appear in
the middle of valid string input, special cases for
'<' and '(' are necessary. */
else if (*PARSER_STREAM (parser) == '<'
|| *PARSER_STREAM (parser) == '(')
{
/* Don't interpret 'operator<' / 'operator<<' as a
template parameter list though. */
if (*PARSER_STREAM (parser) == '<'
&& (PARSER_STATE (parser)->language->la_language
== language_cplus)
&& (PARSER_STREAM (parser) - start) >= CP_OPERATOR_LEN)
{
const char *op = PARSER_STREAM (parser);
while (op > start && isspace (op[-1]))
op--;
if (op - start >= CP_OPERATOR_LEN)
{
op -= CP_OPERATOR_LEN;
if (strncmp (op, CP_OPERATOR_STR, CP_OPERATOR_LEN) == 0
&& (op == start
|| !(isalnum (op[-1]) || op[-1] == '_')))
{
/* This is an operator name. Keep going. */
++(PARSER_STREAM (parser));
if (*PARSER_STREAM (parser) == '<')
++(PARSER_STREAM (parser));
continue;
}
}
}
const char *end = find_parameter_list_end (PARSER_STREAM (parser));
PARSER_STREAM (parser) = end;
/* Don't loop around to the normal \0 case above because
we don't want to misinterpret a potential keyword at
the end of the token when the string isn't
"()<>"-balanced. This handles "b
function(thread<tab>" in completion mode. */
if (*end == '\0')
{
LS_TOKEN_STOKEN (token).ptr = start;
LS_TOKEN_STOKEN (token).length
= PARSER_STREAM (parser) - start;
return token;
}
else
continue;
}
/* Commas are terminators, but not if they are part of an
operator name. */
else if (*PARSER_STREAM (parser) == ',')
{
if ((PARSER_STATE (parser)->language->la_language
== language_cplus)
&& (PARSER_STREAM (parser) - start) > CP_OPERATOR_LEN)
{
const char *op = strstr (start, CP_OPERATOR_STR);
if (op != NULL && is_operator_name (op))
{
/* This is an operator name. Keep going. */
++(PARSER_STREAM (parser));
continue;
}
}
/* Comma terminates the string. */
LS_TOKEN_STOKEN (token).ptr = start;
LS_TOKEN_STOKEN (token).length = PARSER_STREAM (parser) - start;
return token;
}
/* Advance the stream. */
gdb_assert (*(PARSER_STREAM (parser)) != '\0');
++(PARSER_STREAM (parser));
}
}
return token;
}
/* Lex a single linespec token from PARSER. */
static linespec_token
linespec_lexer_lex_one (linespec_parser *parser)
{
const char *keyword;
if (parser->lexer.current.type == LSTOKEN_CONSUMED)
{
/* Skip any whitespace. */
PARSER_STREAM (parser) = skip_spaces (PARSER_STREAM (parser));
/* Check for a keyword, they end the linespec. */
keyword = linespec_lexer_lex_keyword (PARSER_STREAM (parser));
if (keyword != NULL)
{
parser->lexer.current.type = LSTOKEN_KEYWORD;
LS_TOKEN_KEYWORD (parser->lexer.current) = keyword;
/* We do not advance the stream here intentionally:
we would like lexing to stop when a keyword is seen.
PARSER_STREAM (parser) += strlen (keyword); */
return parser->lexer.current;
}
/* Handle other tokens. */
switch (*PARSER_STREAM (parser))
{
case 0:
parser->lexer.current.type = LSTOKEN_EOI;
break;
case '+': case '-':
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
if (!linespec_lexer_lex_number (parser, &(parser->lexer.current)))
parser->lexer.current = linespec_lexer_lex_string (parser);
break;
case ':':
/* If we have a scope operator, lex the input as a string.
Otherwise, return LSTOKEN_COLON. */
if (PARSER_STREAM (parser)[1] == ':')
parser->lexer.current = linespec_lexer_lex_string (parser);
else
{
parser->lexer.current.type = LSTOKEN_COLON;
++(PARSER_STREAM (parser));
}
break;
case '\'': case '\"':
/* Special case: permit quote-enclosed linespecs. */
if (parser->is_quote_enclosed
&& is_closing_quote_enclosed (PARSER_STREAM (parser)))
{
++(PARSER_STREAM (parser));
parser->lexer.current.type = LSTOKEN_EOI;
}
else
parser->lexer.current = linespec_lexer_lex_string (parser);
break;
case ',':
parser->lexer.current.type = LSTOKEN_COMMA;
LS_TOKEN_STOKEN (parser->lexer.current).ptr
= PARSER_STREAM (parser);
LS_TOKEN_STOKEN (parser->lexer.current).length = 1;
++(PARSER_STREAM (parser));
break;
default:
/* If the input is not a number, it must be a string.
[Keywords were already considered above.] */
parser->lexer.current = linespec_lexer_lex_string (parser);
break;
}
}
return parser->lexer.current;
}
/* Consume the current token and return the next token in PARSER's
input stream. Also advance the completion word for completion
mode. */
static linespec_token
linespec_lexer_consume_token (linespec_parser *parser)
{
gdb_assert (parser->lexer.current.type != LSTOKEN_EOI);
bool advance_word = (parser->lexer.current.type != LSTOKEN_STRING
|| *PARSER_STREAM (parser) != '\0');
/* If we're moving past a string to some other token, it must be the
quote was terminated. */
if (parser->completion_quote_char)
{
gdb_assert (parser->lexer.current.type == LSTOKEN_STRING);
/* If the string was the last (non-EOI) token, we're past the
quote, but remember that for later. */
if (*PARSER_STREAM (parser) != '\0')
{
parser->completion_quote_char = '\0';
parser->completion_quote_end = NULL;;
}
}
parser->lexer.current.type = LSTOKEN_CONSUMED;
linespec_lexer_lex_one (parser);
if (parser->lexer.current.type == LSTOKEN_STRING)
{
/* Advance the completion word past a potential initial
quote-char. */
parser->completion_word = LS_TOKEN_STOKEN (parser->lexer.current).ptr;
}
else if (advance_word)
{
/* Advance the completion word past any whitespace. */
parser->completion_word = PARSER_STREAM (parser);
}
return parser->lexer.current;
}
/* Return the next token without consuming the current token. */
static linespec_token
linespec_lexer_peek_token (linespec_parser *parser)
{
linespec_token next;
const char *saved_stream = PARSER_STREAM (parser);
linespec_token saved_token = parser->lexer.current;
int saved_completion_quote_char = parser->completion_quote_char;
const char *saved_completion_quote_end = parser->completion_quote_end;
const char *saved_completion_word = parser->completion_word;
next = linespec_lexer_consume_token (parser);
PARSER_STREAM (parser) = saved_stream;
parser->lexer.current = saved_token;
parser->completion_quote_char = saved_completion_quote_char;
parser->completion_quote_end = saved_completion_quote_end;
parser->completion_word = saved_completion_word;
return next;
}
/* Helper functions. */
/* Add SAL to SALS, and also update SELF->CANONICAL_NAMES to reflect
the new sal, if needed. If not NULL, SYMNAME is the name of the
symbol to use when constructing the new canonical name.
If LITERAL_CANONICAL is non-zero, SYMNAME will be used as the
canonical name for the SAL. */
static void
add_sal_to_sals (struct linespec_state *self,
std::vector<symtab_and_line> *sals,
struct symtab_and_line *sal,
const char *symname, int literal_canonical)
{
sals->push_back (*sal);
if (self->canonical)
{
struct linespec_canonical_name *canonical;
self->canonical_names = XRESIZEVEC (struct linespec_canonical_name,
self->canonical_names,
sals->size ());
canonical = &self->canonical_names[sals->size () - 1];
if (!literal_canonical && sal->symtab)
{
symtab_to_fullname (sal->symtab);
/* Note that the filter doesn't have to be a valid linespec
input. We only apply the ":LINE" treatment to Ada for
the time being. */
if (symname != NULL && sal->line != 0
&& self->language->la_language == language_ada)
canonical->suffix = xstrprintf ("%s:%d", symname,
sal->line).release ();
else if (symname != NULL)
canonical->suffix = xstrdup (symname);
else
canonical->suffix = xstrprintf ("%d", sal->line).release ();
canonical->symtab = sal->symtab;
}
else
{
if (symname != NULL)
canonical->suffix = xstrdup (symname);
else
canonical->suffix = xstrdup ("<unknown>");
canonical->symtab = NULL;
}
}
}
/* A hash function for address_entry. */
static hashval_t
hash_address_entry (const void *p)
{
const struct address_entry *aep = (const struct address_entry *) p;
hashval_t hash;
hash = iterative_hash_object (aep->pspace, 0);
return iterative_hash_object (aep->addr, hash);
}
/* An equality function for address_entry. */
static int
eq_address_entry (const void *a, const void *b)
{
const struct address_entry *aea = (const struct address_entry *) a;
const struct address_entry *aeb = (const struct address_entry *) b;
return aea->pspace == aeb->pspace && aea->addr == aeb->addr;
}
/* Check whether the address, represented by PSPACE and ADDR, is
already in the set. If so, return 0. Otherwise, add it and return
1. */
static int
maybe_add_address (htab_t set, struct program_space *pspace, CORE_ADDR addr)
{
struct address_entry e, *p;
void **slot;
e.pspace = pspace;
e.addr = addr;
slot = htab_find_slot (set, &e, INSERT);
if (*slot)
return 0;
p = XNEW (struct address_entry);
memcpy (p, &e, sizeof (struct address_entry));
*slot = p;
return 1;
}
/* A helper that walks over all matching symtabs in all objfiles and
calls CALLBACK for each symbol matching NAME. If SEARCH_PSPACE is
not NULL, then the search is restricted to just that program
space. If INCLUDE_INLINE is true then symbols representing
inlined instances of functions will be included in the result. */
static void
iterate_over_all_matching_symtabs
(struct linespec_state *state,
const lookup_name_info &lookup_name,
const domain_enum name_domain,
enum search_domain search_domain,
struct program_space *search_pspace, bool include_inline,
gdb::function_view<symbol_found_callback_ftype> callback)
{
for (struct program_space *pspace : program_spaces)
{
if (search_pspace != NULL && search_pspace != pspace)
continue;
if (pspace->executing_startup)
continue;
set_current_program_space (pspace);
for (objfile *objfile : current_program_space->objfiles ())
{
objfile->expand_symtabs_matching (NULL, &lookup_name, NULL, NULL,
(SEARCH_GLOBAL_BLOCK
| SEARCH_STATIC_BLOCK),
UNDEF_DOMAIN,
search_domain);
for (compunit_symtab *cu : objfile->compunits ())
{
struct symtab *symtab = cu->primary_filetab ();
iterate_over_file_blocks (symtab, lookup_name, name_domain,
callback);
if (include_inline)
{
const struct block *block;
int i;
const blockvector *bv = symtab->compunit ()->blockvector ();
for (i = FIRST_LOCAL_BLOCK; i < bv->num_blocks (); i++)
{
block = bv->block (i);
state->language->iterate_over_symbols
(block, lookup_name, name_domain,
[&] (block_symbol *bsym)
{
/* Restrict calls to CALLBACK to symbols
representing inline symbols only. */
if (bsym->symbol->is_inlined ())
return callback (bsym);
return true;
});
}
}
}
}
}
}
/* Returns the block to be used for symbol searches from
the current location. */
static const struct block *
get_current_search_block (void)
{
/* get_selected_block can change the current language when there is
no selected frame yet. */
scoped_restore_current_language save_language;
return get_selected_block (0);
}
/* Iterate over static and global blocks. */
static void
iterate_over_file_blocks
(struct symtab *symtab, const lookup_name_info &name,
domain_enum domain, gdb::function_view<symbol_found_callback_ftype> callback)
{
const struct block *block;
for (block = symtab->compunit ()->blockvector ()->static_block ();
block != NULL;
block = block->superblock ())
current_language->iterate_over_symbols (block, name, domain, callback);
}
/* A helper for find_method. This finds all methods in type T of
language T_LANG which match NAME. It adds matching symbol names to
RESULT_NAMES, and adds T's direct superclasses to SUPERCLASSES. */
static void
find_methods (struct type *t, enum language t_lang, const char *name,
std::vector<const char *> *result_names,
std::vector<struct type *> *superclasses)
{
int ibase;
const char *class_name = t->name ();
/* Ignore this class if it doesn't have a name. This is ugly, but
unless we figure out how to get the physname without the name of
the class, then the loop can't do any good. */
if (class_name)
{
int method_counter;
lookup_name_info lookup_name (name, symbol_name_match_type::FULL);
symbol_name_matcher_ftype *symbol_name_compare
= language_def (t_lang)->get_symbol_name_matcher (lookup_name);
t = check_typedef (t);
/* Loop over each method name. At this level, all overloads of a name
are counted as a single name. There is an inner loop which loops over
each overload. */
for (method_counter = TYPE_NFN_FIELDS (t) - 1;
method_counter >= 0;
--method_counter)
{
const char *method_name = TYPE_FN_FIELDLIST_NAME (t, method_counter);
if (symbol_name_compare (method_name, lookup_name, NULL))
{
int field_counter;
for (field_counter = (TYPE_FN_FIELDLIST_LENGTH (t, method_counter)
- 1);
field_counter >= 0;
--field_counter)
{
struct fn_field *f;
const char *phys_name;
f = TYPE_FN_FIELDLIST1 (t, method_counter);
if (TYPE_FN_FIELD_STUB (f, field_counter))
continue;
phys_name = TYPE_FN_FIELD_PHYSNAME (f, field_counter);
result_names->push_back (phys_name);
}
}
}
}
for (ibase = 0; ibase < TYPE_N_BASECLASSES (t); ibase++)
superclasses->push_back (TYPE_BASECLASS (t, ibase));
}
/* The string equivalent of find_toplevel_char. Returns a pointer
to the location of NEEDLE in HAYSTACK, ignoring any occurrences
inside "()" and "<>". Returns NULL if NEEDLE was not found. */
static const char *
find_toplevel_string (const char *haystack, const char *needle)
{
const char *s = haystack;
do
{
s = find_toplevel_char (s, *needle);
if (s != NULL)
{
/* Found first char in HAYSTACK; check rest of string. */
if (startswith (s, needle))
return s;
/* Didn't find it; loop over HAYSTACK, looking for the next
instance of the first character of NEEDLE. */
++s;
}
}
while (s != NULL && *s != '\0');
/* NEEDLE was not found in HAYSTACK. */
return NULL;
}
/* Convert CANONICAL to its string representation using
symtab_to_fullname for SYMTAB. */
static std::string
canonical_to_fullform (const struct linespec_canonical_name *canonical)
{
if (canonical->symtab == NULL)
return canonical->suffix;
else
return string_printf ("%s:%s", symtab_to_fullname (canonical->symtab),
canonical->suffix);
}
/* Given FILTERS, a list of canonical names, filter the sals in RESULT
and store the result in SELF->CANONICAL. */
static void
filter_results (struct linespec_state *self,
std::vector<symtab_and_line> *result,
const std::vector<const char *> &filters)
{
for (const char *name : filters)
{
linespec_sals lsal;
for (size_t j = 0; j < result->size (); ++j)
{
const struct linespec_canonical_name *canonical;
canonical = &self->canonical_names[j];
std::string fullform = canonical_to_fullform (canonical);
if (name == fullform)
lsal.sals.push_back ((*result)[j]);
}
if (!lsal.sals.empty ())
{
lsal.canonical = xstrdup (name);
self->canonical->lsals.push_back (std::move (lsal));
}
}
self->canonical->pre_expanded = 0;
}
/* Store RESULT into SELF->CANONICAL. */
static void
convert_results_to_lsals (struct linespec_state *self,
std::vector<symtab_and_line> *result)
{
struct linespec_sals lsal;
lsal.canonical = NULL;
lsal.sals = std::move (*result);
self->canonical->lsals.push_back (std::move (lsal));
}
/* A structure that contains two string representations of a struct
linespec_canonical_name:
- one where the symtab's fullname is used;
- one where the filename followed the "set filename-display"
setting. */
struct decode_line_2_item
{
decode_line_2_item (std::string &&fullform_, std::string &&displayform_,
bool selected_)
: fullform (std::move (fullform_)),
displayform (std::move (displayform_)),
selected (selected_)
{
}
/* The form using symtab_to_fullname. */
std::string fullform;
/* The form using symtab_to_filename_for_display. */
std::string displayform;
/* Field is initialized to zero and it is set to one if the user
requested breakpoint for this entry. */
unsigned int selected : 1;
};
/* Helper for std::sort to sort decode_line_2_item entries by
DISPLAYFORM and secondarily by FULLFORM. */
static bool
decode_line_2_compare_items (const decode_line_2_item &a,
const decode_line_2_item &b)
{
if (a.displayform != b.displayform)
return a.displayform < b.displayform;
return a.fullform < b.fullform;
}
/* Handle multiple results in RESULT depending on SELECT_MODE. This
will either return normally, throw an exception on multiple
results, or present a menu to the user. On return, the SALS vector
in SELF->CANONICAL is set up properly. */
static void
decode_line_2 (struct linespec_state *self,
std::vector<symtab_and_line> *result,
const char *select_mode)
{
const char *args;
const char *prompt;
int i;
std::vector<const char *> filters;
std::vector<struct decode_line_2_item> items;
gdb_assert (select_mode != multiple_symbols_all);
gdb_assert (self->canonical != NULL);
gdb_assert (!result->empty ());
/* Prepare ITEMS array. */
for (i = 0; i < result->size (); ++i)
{
const struct linespec_canonical_name *canonical;
std::string displayform;
canonical = &self->canonical_names[i];
gdb_assert (canonical->suffix != NULL);
std::string fullform = canonical_to_fullform (canonical);
if (canonical->symtab == NULL)
displayform = canonical->suffix;
else
{
const char *fn_for_display;
fn_for_display = symtab_to_filename_for_display (canonical->symtab);
displayform = string_printf ("%s:%s", fn_for_display,
canonical->suffix);
}
items.emplace_back (std::move (fullform), std::move (displayform),
false);
}
/* Sort the list of method names. */
std::sort (items.begin (), items.end (), decode_line_2_compare_items);
/* Remove entries with the same FULLFORM. */
items.erase (std::unique (items.begin (), items.end (),
[] (const struct decode_line_2_item &a,
const struct decode_line_2_item &b)
{
return a.fullform == b.fullform;
}),
items.end ());
if (select_mode == multiple_symbols_cancel && items.size () > 1)
error (_("canceled because the command is ambiguous\n"
"See set/show multiple-symbol."));
if (select_mode == multiple_symbols_all || items.size () == 1)
{
convert_results_to_lsals (self, result);
return;
}
printf_unfiltered (_("[0] cancel\n[1] all\n"));
for (i = 0; i < items.size (); i++)
printf_unfiltered ("[%d] %s\n", i + 2, items[i].displayform.c_str ());
prompt = getenv ("PS2");
if (prompt == NULL)
{
prompt = "> ";
}
std::string buffer;
args = command_line_input (buffer, prompt, "overload-choice");
if (args == 0 || *args == 0)
error_no_arg (_("one or more choice numbers"));
number_or_range_parser parser (args);
while (!parser.finished ())
{
int num = parser.get_number ();
if (num == 0)
error (_("canceled"));
else if (num == 1)
{
/* We intentionally make this result in a single breakpoint,
contrary to what older versions of gdb did. The
rationale is that this lets a user get the
multiple_symbols_all behavior even with the 'ask'
setting; and he can get separate breakpoints by entering
"2-57" at the query. */
convert_results_to_lsals (self, result);
return;
}
num -= 2;
if (num >= items.size ())
printf_unfiltered (_("No choice number %d.\n"), num);
else
{
struct decode_line_2_item *item = &items[num];
if (!item->selected)
{
filters.push_back (item->fullform.c_str ());
item->selected = 1;
}
else
{
printf_unfiltered (_("duplicate request for %d ignored.\n"),
num + 2);
}
}
}
filter_results (self, result, filters);
}
/* The parser of linespec itself. */
/* Throw an appropriate error when SYMBOL is not found (optionally in
FILENAME). */
static void ATTRIBUTE_NORETURN
symbol_not_found_error (const char *symbol, const char *filename)
{
if (symbol == NULL)
symbol = "";
if (!have_full_symbols ()
&& !have_partial_symbols ()
&& !have_minimal_symbols ())
throw_error (NOT_FOUND_ERROR,
_("No symbol table is loaded. Use the \"file\" command."));
/* If SYMBOL starts with '$', the user attempted to either lookup
a function/variable in his code starting with '$' or an internal
variable of that name. Since we do not know which, be concise and
explain both possibilities. */
if (*symbol == '$')
{
if (filename)
throw_error (NOT_FOUND_ERROR,
_("Undefined convenience variable or function \"%s\" "
"not defined in \"%s\"."), symbol, filename);
else
throw_error (NOT_FOUND_ERROR,
_("Undefined convenience variable or function \"%s\" "
"not defined."), symbol);
}
else
{
if (filename)
throw_error (NOT_FOUND_ERROR,
_("Function \"%s\" not defined in \"%s\"."),
symbol, filename);
else
throw_error (NOT_FOUND_ERROR,
_("Function \"%s\" not defined."), symbol);
}
}
/* Throw an appropriate error when an unexpected token is encountered
in the input. */
static void ATTRIBUTE_NORETURN
unexpected_linespec_error (linespec_parser *parser)
{
linespec_token token;
static const char * token_type_strings[]
= {"keyword", "colon", "string", "number", "comma", "end of input"};
/* Get the token that generated the error. */
token = linespec_lexer_lex_one (parser);
/* Finally, throw the error. */
if (token.type == LSTOKEN_STRING || token.type == LSTOKEN_NUMBER
|| token.type == LSTOKEN_KEYWORD)
{
gdb::unique_xmalloc_ptr<char> string = copy_token_string (token);
throw_error (GENERIC_ERROR,
_("malformed linespec error: unexpected %s, \"%s\""),
token_type_strings[token.type], string.get ());
}
else
throw_error (GENERIC_ERROR,
_("malformed linespec error: unexpected %s"),
token_type_strings[token.type]);
}
/* Throw an undefined label error. */
static void ATTRIBUTE_NORETURN
undefined_label_error (const char *function, const char *label)
{
if (function != NULL)
throw_error (NOT_FOUND_ERROR,
_("No label \"%s\" defined in function \"%s\"."),
label, function);
else
throw_error (NOT_FOUND_ERROR,
_("No label \"%s\" defined in current function."),
label);
}
/* Throw a source file not found error. */
static void ATTRIBUTE_NORETURN
source_file_not_found_error (const char *name)
{
throw_error (NOT_FOUND_ERROR, _("No source file named %s."), name);
}
/* Unless at EIO, save the current stream position as completion word
point, and consume the next token. */
static linespec_token
save_stream_and_consume_token (linespec_parser *parser)
{
if (linespec_lexer_peek_token (parser).type != LSTOKEN_EOI)
parser->completion_word = PARSER_STREAM (parser);
return linespec_lexer_consume_token (parser);
}
/* See description in linespec.h. */
struct line_offset
linespec_parse_line_offset (const char *string)
{
const char *start = string;
struct line_offset line_offset;
if (*string == '+')
{
line_offset.sign = LINE_OFFSET_PLUS;
++string;
}
else if (*string == '-')
{
line_offset.sign = LINE_OFFSET_MINUS;
++string;
}
else
line_offset.sign = LINE_OFFSET_NONE;
if (*string != '\0' && !isdigit (*string))
error (_("malformed line offset: \"%s\""), start);
/* Right now, we only allow base 10 for offsets. */
line_offset.offset = atoi (string);
return line_offset;
}
/* In completion mode, if the user is still typing the number, there's
no possible completion to offer. But if there's already input past
the number, setup to expect NEXT. */
static void
set_completion_after_number (linespec_parser *parser,
linespec_complete_what next)
{
if (*PARSER_STREAM (parser) == ' ')
{
parser->completion_word = skip_spaces (PARSER_STREAM (parser) + 1);
parser->complete_what = next;
}
else
{
parser->completion_word = PARSER_STREAM (parser);
parser->complete_what = linespec_complete_what::NOTHING;
}
}
/* Parse the basic_spec in PARSER's input. */
static void
linespec_parse_basic (linespec_parser *parser)
{
gdb::unique_xmalloc_ptr<char> name;
linespec_token token;
/* Get the next token. */
token = linespec_lexer_lex_one (parser);
/* If it is EOI or KEYWORD, issue an error. */
if (token.type == LSTOKEN_KEYWORD)
{
parser->complete_what = linespec_complete_what::NOTHING;
unexpected_linespec_error (parser);
}
else if (token.type == LSTOKEN_EOI)
{
unexpected_linespec_error (parser);
}
/* If it is a LSTOKEN_NUMBER, we have an offset. */
else if (token.type == LSTOKEN_NUMBER)
{
set_completion_after_number (parser, linespec_complete_what::KEYWORD);
/* Record the line offset and get the next token. */
name = copy_token_string (token);
PARSER_EXPLICIT (parser)->line_offset
= linespec_parse_line_offset (name.get ());
/* Get the next token. */
token = linespec_lexer_consume_token (parser);
/* If the next token is a comma, stop parsing and return. */
if (token.type == LSTOKEN_COMMA)
{
parser->complete_what = linespec_complete_what::NOTHING;
return;
}
/* If the next token is anything but EOI or KEYWORD, issue
an error. */
if (token.type != LSTOKEN_KEYWORD && token.type != LSTOKEN_EOI)
unexpected_linespec_error (parser);
}
if (token.type == LSTOKEN_KEYWORD || token.type == LSTOKEN_EOI)
return;
/* Next token must be LSTOKEN_STRING. */
if (token.type != LSTOKEN_STRING)
{
parser->complete_what = linespec_complete_what::NOTHING;
unexpected_linespec_error (parser);
}
/* The current token will contain the name of a function, method,
or label. */
name = copy_token_string (token);
if (parser->completion_tracker != NULL)
{
/* If the function name ends with a ":", then this may be an
incomplete "::" scope operator instead of a label separator.
E.g.,
"b klass:<tab>"
which should expand to:
"b klass::method()"
Do a tentative completion assuming the later. If we find
completions, advance the stream past the colon token and make
it part of the function name/token. */
if (!parser->completion_quote_char
&& strcmp (PARSER_STREAM (parser), ":") == 0)
{
completion_tracker tmp_tracker;
const char *source_filename
= PARSER_EXPLICIT (parser)->source_filename;
symbol_name_match_type match_type
= PARSER_EXPLICIT (parser)->func_name_match_type;
linespec_complete_function (tmp_tracker,
parser->completion_word,
match_type,
source_filename);
if (tmp_tracker.have_completions ())
{
PARSER_STREAM (parser)++;
LS_TOKEN_STOKEN (token).length++;
name.reset (savestring (parser->completion_word,
(PARSER_STREAM (parser)
- parser->completion_word)));
}
}
PARSER_EXPLICIT (parser)->function_name = name.release ();
}
else
{
std::vector<block_symbol> symbols;
std::vector<bound_minimal_symbol> minimal_symbols;
/* Try looking it up as a function/method. */
find_linespec_symbols (PARSER_STATE (parser),
PARSER_RESULT (parser)->file_symtabs, name.get (),
PARSER_EXPLICIT (parser)->func_name_match_type,
&symbols, &minimal_symbols);
if (!symbols.empty () || !minimal_symbols.empty ())
{
PARSER_RESULT (parser)->function_symbols = std::move (symbols);
PARSER_RESULT (parser)->minimal_symbols = std::move (minimal_symbols);
PARSER_EXPLICIT (parser)->function_name = name.release ();
}
else
{
/* NAME was not a function or a method. So it must be a label
name or user specified variable like "break foo.c:$zippo". */
std::vector<block_symbol> labels
= find_label_symbols (PARSER_STATE (parser), {}, &symbols,
name.get ());
if (!labels.empty ())
{
PARSER_RESULT (parser)->labels.label_symbols = std::move (labels);
PARSER_RESULT (parser)->labels.function_symbols
= std::move (symbols);
PARSER_EXPLICIT (parser)->label_name = name.release ();
}
else if (token.type == LSTOKEN_STRING
&& *LS_TOKEN_STOKEN (token).ptr == '$')
{
/* User specified a convenience variable or history value. */
PARSER_EXPLICIT (parser)->line_offset
= linespec_parse_variable (PARSER_STATE (parser), name.get ());
if (PARSER_EXPLICIT (parser)->line_offset.sign == LINE_OFFSET_UNKNOWN)
{
/* The user-specified variable was not valid. Do not
throw an error here. parse_linespec will do it for us. */
PARSER_EXPLICIT (parser)->function_name = name.release ();
return;
}
}
else
{
/* The name is also not a label. Abort parsing. Do not throw
an error here. parse_linespec will do it for us. */
/* Save a copy of the name we were trying to lookup. */
PARSER_EXPLICIT (parser)->function_name = name.release ();
return;
}
}
}
int previous_qc = parser->completion_quote_char;
/* Get the next token. */
token = linespec_lexer_consume_token (parser);
if (token.type == LSTOKEN_EOI)
{
if (previous_qc && !parser->completion_quote_char)
parser->complete_what = linespec_complete_what::KEYWORD;
}
else if (token.type == LSTOKEN_COLON)
{
/* User specified a label or a lineno. */
token = linespec_lexer_consume_token (parser);
if (token.type == LSTOKEN_NUMBER)
{
/* User specified an offset. Record the line offset and
get the next token. */
set_completion_after_number (parser, linespec_complete_what::KEYWORD);
name = copy_token_string (token);
PARSER_EXPLICIT (parser)->line_offset
= linespec_parse_line_offset (name.get ());
/* Get the next token. */
token = linespec_lexer_consume_token (parser);
}
else if (token.type == LSTOKEN_EOI && parser->completion_tracker != NULL)
{
parser->complete_what = linespec_complete_what::LABEL;
}
else if (token.type == LSTOKEN_STRING)
{
parser->complete_what = linespec_complete_what::LABEL;
/* If we have text after the label separated by whitespace
(e.g., "b func():lab i<tab>"), don't consider it part of
the label. In completion mode that should complete to
"if", in normal mode, the 'i' should be treated as
garbage. */
if (parser->completion_quote_char == '\0')
{
const char *ptr = LS_TOKEN_STOKEN (token).ptr;
for (size_t i = 0; i < LS_TOKEN_STOKEN (token).length; i++)
{
if (ptr[i] == ' ')
{
LS_TOKEN_STOKEN (token).length = i;
PARSER_STREAM (parser) = skip_spaces (ptr + i + 1);
break;
}
}
}
if (parser->completion_tracker != NULL)
{
if (PARSER_STREAM (parser)[-1] == ' ')
{
parser->completion_word = PARSER_STREAM (parser);
parser->complete_what = linespec_complete_what::KEYWORD;
}
}
else
{
std::vector<block_symbol> symbols;
/* Grab a copy of the label's name and look it up. */
name = copy_token_string (token);
std::vector<block_symbol> labels
= find_label_symbols (PARSER_STATE (parser),
PARSER_RESULT (parser)->function_symbols,
&symbols, name.get ());
if (!labels.empty ())
{
PARSER_RESULT (parser)->labels.label_symbols
= std::move (labels);
PARSER_RESULT (parser)->labels.function_symbols
= std::move (symbols);
PARSER_EXPLICIT (parser)->label_name = name.release ();
}
else
{
/* We don't know what it was, but it isn't a label. */
undefined_label_error
(PARSER_EXPLICIT (parser)->function_name, name.get ());
}
}
/* Check for a line offset. */
token = save_stream_and_consume_token (parser);
if (token.type == LSTOKEN_COLON)
{
/* Get the next token. */
token = linespec_lexer_consume_token (parser);
/* It must be a line offset. */
if (token.type != LSTOKEN_NUMBER)
unexpected_linespec_error (parser);
/* Record the line offset and get the next token. */
name = copy_token_string (token);
PARSER_EXPLICIT (parser)->line_offset
= linespec_parse_line_offset (name.get ());
/* Get the next token. */
token = linespec_lexer_consume_token (parser);
}
}
else
{
/* Trailing ':' in the input. Issue an error. */
unexpected_linespec_error (parser);
}
}
}
/* Canonicalize the linespec contained in LS. The result is saved into
STATE->canonical. This function handles both linespec and explicit
locations. */
static void
canonicalize_linespec (struct linespec_state *state, const linespec *ls)
{
/* If canonicalization was not requested, no need to do anything. */
if (!state->canonical)
return;
/* Save everything as an explicit location. */
state->canonical->locspec = ls->explicit_loc.clone ();
explicit_location_spec *explicit_loc
= as_explicit_location_spec (state->canonical->locspec.get ());
if (explicit_loc->label_name != NULL)
{
state->canonical->special_display = 1;
if (explicit_loc->function_name == NULL)
{
/* No function was specified, so add the symbol name. */
gdb_assert (ls->labels.function_symbols.size () == 1);
block_symbol s = ls->labels.function_symbols.front ();
explicit_loc->function_name = xstrdup (s.symbol->natural_name ());
}
}
/* If this location originally came from a linespec, save a string
representation of it for display and saving to file. */
if (state->is_linespec)
explicit_loc->set_string (explicit_loc->to_linespec ());
}
/* Given a line offset in LS, construct the relevant SALs. */
static std::vector<symtab_and_line>
create_sals_line_offset (struct linespec_state *self,
linespec *ls)
{
int use_default = 0;
/* This is where we need to make sure we have good defaults.
We must guarantee that this section of code is never executed
when we are called with just a function name, since
set_default_source_symtab_and_line uses
select_source_symtab that calls us with such an argument. */
if (ls->file_symtabs.size () == 1
&& ls->file_symtabs.front () == nullptr)
{
set_current_program_space (self->program_space);
/* Make sure we have at least a default source line. */
set_default_source_symtab_and_line ();
initialize_defaults (&self->default_symtab, &self->default_line);
ls->file_symtabs
= collect_symtabs_from_filename (self->default_symtab->filename,
self->search_pspace);
use_default = 1;
}
symtab_and_line val;
val.line = ls->explicit_loc.line_offset.offset;
switch (ls->explicit_loc.line_offset.sign)
{
case LINE_OFFSET_PLUS:
if (ls->explicit_loc.line_offset.offset == 0)
val.line = 5;
if (use_default)
val.line = self->default_line + val.line;
break;
case LINE_OFFSET_MINUS:
if (ls->explicit_loc.line_offset.offset == 0)
val.line = 15;
if (use_default)
val.line = self->default_line - val.line;
else
val.line = -val.line;
break;
case LINE_OFFSET_NONE:
break; /* No need to adjust val.line. */
}
std::vector<symtab_and_line> values;
if (self->list_mode)
values = decode_digits_list_mode (self, ls, val);
else
{
struct linetable_entry *best_entry = NULL;
int i, j;
std::vector<symtab_and_line> intermediate_results
= decode_digits_ordinary (self, ls, val.line, &best_entry);
if (intermediate_results.empty () && best_entry != NULL)
intermediate_results = decode_digits_ordinary (self, ls,
best_entry->line,
&best_entry);
/* For optimized code, the compiler can scatter one source line
across disjoint ranges of PC values, even when no duplicate
functions or inline functions are involved. For example,
'for (;;)' inside a non-template, non-inline, and non-ctor-or-dtor
function can result in two PC ranges. In this case, we don't
want to set a breakpoint on the first PC of each range. To filter
such cases, we use containing blocks -- for each PC found
above, we see if there are other PCs that are in the same
block. If yes, the other PCs are filtered out. */
gdb::def_vector<int> filter (intermediate_results.size ());
gdb::def_vector<const block *> blocks (intermediate_results.size ());
for (i = 0; i < intermediate_results.size (); ++i)
{
set_current_program_space (intermediate_results[i].pspace);
filter[i] = 1;
blocks[i] = block_for_pc_sect (intermediate_results[i].pc,
intermediate_results[i].section);
}
for (i = 0; i < intermediate_results.size (); ++i)
{
if (blocks[i] != NULL)
for (j = i + 1; j < intermediate_results.size (); ++j)
{
if (blocks[j] == blocks[i])
{
filter[j] = 0;
break;
}
}
}
for (i = 0; i < intermediate_results.size (); ++i)
if (filter[i])
{
struct symbol *sym = (blocks[i]
? block_containing_function (blocks[i])
: NULL);
if (self->funfirstline)
skip_prologue_sal (&intermediate_results[i]);
intermediate_results[i].symbol = sym;
add_sal_to_sals (self, &values, &intermediate_results[i],
sym ? sym->natural_name () : NULL, 0);
}
}
if (values.empty ())
{
if (ls->explicit_loc.source_filename)
throw_error (NOT_FOUND_ERROR, _("No line %d in file \"%s\"."),
val.line, ls->explicit_loc.source_filename);
else
throw_error (NOT_FOUND_ERROR, _("No line %d in the current file."),
val.line);
}
return values;
}
/* Convert the given ADDRESS into SaLs. */
static std::vector<symtab_and_line>
convert_address_location_to_sals (struct linespec_state *self,
CORE_ADDR address)
{
symtab_and_line sal = find_pc_line (address, 0);
sal.pc = address;
sal.section = find_pc_overlay (address);
sal.explicit_pc = 1;
sal.symbol = find_pc_sect_containing_function (sal.pc, sal.section);
std::vector<symtab_and_line> sals;
add_sal_to_sals (self, &sals, &sal, core_addr_to_string (address), 1);
return sals;
}
/* Create and return SALs from the linespec LS. */
static std::vector<symtab_and_line>
convert_linespec_to_sals (struct linespec_state *state, linespec *ls)
{
std::vector<symtab_and_line> sals;
if (!ls->labels.label_symbols.empty ())
{
/* We have just a bunch of functions/methods or labels. */
struct symtab_and_line sal;
for (const auto &sym : ls->labels.label_symbols)
{
struct program_space *pspace
= sym.symbol->symtab ()->compunit ()->objfile ()->pspace;
if (symbol_to_sal (&sal, state->funfirstline, sym.symbol)
&& maybe_add_address (state->addr_set, pspace, sal.pc))
add_sal_to_sals (state, &sals, &sal,
sym.symbol->natural_name (), 0);
}
}
else if (!ls->function_symbols.empty () || !ls->minimal_symbols.empty ())
{
/* We have just a bunch of functions and/or methods. */
if (!ls->function_symbols.empty ())
{
/* Sort symbols so that symbols with the same program space are next
to each other. */
std::sort (ls->function_symbols.begin (),
ls->function_symbols.end (),
compare_symbols);
for (const auto &sym : ls->function_symbols)
{
program_space *pspace
= sym.symbol->symtab ()->compunit ()->objfile ()->pspace;
set_current_program_space (pspace);
/* Don't skip to the first line of the function if we
had found an ifunc minimal symbol for this function,
because that means that this function is an ifunc
resolver with the same name as the ifunc itself. */
bool found_ifunc = false;
if (state->funfirstline
&& !ls->minimal_symbols.empty ()
&& sym.symbol->aclass () == LOC_BLOCK)
{
const CORE_ADDR addr
= sym.symbol->value_block ()->entry_pc ();
for (const auto &elem : ls->minimal_symbols)
{
if (elem.minsym->type () == mst_text_gnu_ifunc
|| elem.minsym->type () == mst_data_gnu_ifunc)
{
CORE_ADDR msym_addr = elem.value_address ();
if (elem.minsym->type () == mst_data_gnu_ifunc)
{
struct gdbarch *gdbarch
= elem.objfile->arch ();
msym_addr
= (gdbarch_convert_from_func_ptr_addr
(gdbarch,
msym_addr,
current_inferior ()->top_target ()));
}
if (msym_addr == addr)
{
found_ifunc = true;
break;
}
}
}
}
if (!found_ifunc)
{
symtab_and_line sal;
if (symbol_to_sal (&sal, state->funfirstline, sym.symbol)
&& maybe_add_address (state->addr_set, pspace, sal.pc))
add_sal_to_sals (state, &sals, &sal,
sym.symbol->natural_name (), 0);
}
}
}
if (!ls->minimal_symbols.empty ())
{
/* Sort minimal symbols by program space, too */
std::sort (ls->minimal_symbols.begin (),
ls->minimal_symbols.end (),
compare_msymbols);
for (const auto &elem : ls->minimal_symbols)
{
program_space *pspace = elem.objfile->pspace;
set_current_program_space (pspace);
minsym_found (state, elem.objfile, elem.minsym, &sals);
}
}
}
else if (ls->explicit_loc.line_offset.sign != LINE_OFFSET_UNKNOWN)
{
/* Only an offset was specified. */
sals = create_sals_line_offset (state, ls);
/* Make sure we have a filename for canonicalization. */
if (ls->explicit_loc.source_filename == NULL)
{
const char *fullname = symtab_to_fullname (state->default_symtab);
/* It may be more appropriate to keep DEFAULT_SYMTAB in its symtab
form so that displaying SOURCE_FILENAME can follow the current
FILENAME_DISPLAY_STRING setting. But as it is used only rarely
it has been kept for code simplicity only in absolute form. */
ls->explicit_loc.source_filename = xstrdup (fullname);
}
}
else
{
/* We haven't found any results... */
return sals;
}
canonicalize_linespec (state, ls);
if (!sals.empty () && state->canonical != NULL)
state->canonical->pre_expanded = 1;
return sals;
}
/* Build RESULT from the explicit location spec components
SOURCE_FILENAME, FUNCTION_NAME, LABEL_NAME and LINE_OFFSET. */
static void
convert_explicit_location_spec_to_linespec
(struct linespec_state *self,
linespec *result,
const char *source_filename,
const char *function_name,
symbol_name_match_type fname_match_type,
const char *label_name,
struct line_offset line_offset)
{
std::vector<bound_minimal_symbol> minimal_symbols;
result->explicit_loc.func_name_match_type = fname_match_type;
if (source_filename != NULL)
{
try
{
result->file_symtabs
= symtabs_from_filename (source_filename, self->search_pspace);
}
catch (const gdb_exception_error &except)
{
source_file_not_found_error (source_filename);
}
result->explicit_loc.source_filename = xstrdup (source_filename);
}
else
{
/* A NULL entry means to use the default symtab. */
result->file_symtabs.push_back (nullptr);
}
if (function_name != NULL)
{
std::vector<block_symbol> symbols;
find_linespec_symbols (self, result->file_symtabs,
function_name, fname_match_type,
&symbols, &minimal_symbols);
if (symbols.empty () && minimal_symbols.empty ())
symbol_not_found_error (function_name,
result->explicit_loc.source_filename);
result->explicit_loc.function_name = xstrdup (function_name);
result->function_symbols = std::move (symbols);
result->minimal_symbols = std::move (minimal_symbols);
}
if (label_name != NULL)
{
std::vector<block_symbol> symbols;
std::vector<block_symbol> labels
= find_label_symbols (self, result->function_symbols,
&symbols, label_name);
if (labels.empty ())
undefined_label_error (result->explicit_loc.function_name,
label_name);
result->explicit_loc.label_name = xstrdup (label_name);
result->labels.label_symbols = labels;
result->labels.function_symbols = std::move (symbols);
}
if (line_offset.sign != LINE_OFFSET_UNKNOWN)
result->explicit_loc.line_offset = line_offset;
}
/* Convert the explicit location EXPLICIT_LOC into SaLs. */
static std::vector<symtab_and_line>
convert_explicit_location_spec_to_sals
(struct linespec_state *self,
linespec *result,
const explicit_location_spec *explicit_spec)
{
convert_explicit_location_spec_to_linespec (self, result,
explicit_spec->source_filename,
explicit_spec->function_name,
explicit_spec->func_name_match_type,
explicit_spec->label_name,
explicit_spec->line_offset);
return convert_linespec_to_sals (self, result);
}
/* Parse a string that specifies a linespec.
The basic grammar of linespecs:
linespec -> var_spec | basic_spec
var_spec -> '$' (STRING | NUMBER)
basic_spec -> file_offset_spec | function_spec | label_spec
file_offset_spec -> opt_file_spec offset_spec
function_spec -> opt_file_spec function_name_spec opt_label_spec
label_spec -> label_name_spec
opt_file_spec -> "" | file_name_spec ':'
opt_label_spec -> "" | ':' label_name_spec
file_name_spec -> STRING
function_name_spec -> STRING
label_name_spec -> STRING
function_name_spec -> STRING
offset_spec -> NUMBER
-> '+' NUMBER
-> '-' NUMBER
This may all be followed by several keywords such as "if EXPR",
which we ignore.
A comma will terminate parsing.
The function may be an undebuggable function found in minimal symbol table.
If the argument FUNFIRSTLINE is nonzero, we want the first line
of real code inside a function when a function is specified, and it is
not OK to specify a variable or type to get its line number.
DEFAULT_SYMTAB specifies the file to use if none is specified.
It defaults to current_source_symtab.
DEFAULT_LINE specifies the line number to use for relative
line numbers (that start with signs). Defaults to current_source_line.
If CANONICAL is non-NULL, store an array of strings containing the canonical
line specs there if necessary. Currently overloaded member functions and
line numbers or static functions without a filename yield a canonical
line spec. The array and the line spec strings are allocated on the heap,
it is the callers responsibility to free them.
Note that it is possible to return zero for the symtab
if no file is validly specified. Callers must check that.
Also, the line number returned may be invalid. */
/* Parse the linespec in ARG, which must not be nullptr. MATCH_TYPE
indicates how function names should be matched. */
static std::vector<symtab_and_line>
parse_linespec (linespec_parser *parser, const char *arg,
symbol_name_match_type match_type)
{
gdb_assert (arg != nullptr);
struct gdb_exception file_exception;
/* A special case to start. It has become quite popular for
IDEs to work around bugs in the previous parser by quoting
the entire linespec, so we attempt to deal with this nicely. */
parser->is_quote_enclosed = 0;
if (parser->completion_tracker == NULL
&& !is_ada_operator (arg)
&& *arg != '\0'
&& strchr (linespec_quote_characters, *arg) != NULL)
{
const char *end = skip_quote_char (arg + 1, *arg);
if (end != NULL && is_closing_quote_enclosed (end))
{
/* Here's the special case. Skip ARG past the initial
quote. */
++arg;
parser->is_quote_enclosed = 1;
}
}
parser->lexer.saved_arg = arg;
parser->lexer.stream = arg;
parser->completion_word = arg;
parser->complete_what = linespec_complete_what::FUNCTION;
PARSER_EXPLICIT (parser)->func_name_match_type = match_type;
/* Initialize the default symtab and line offset. */
initialize_defaults (&PARSER_STATE (parser)->default_symtab,
&PARSER_STATE (parser)->default_line);
/* Objective-C shortcut. */
if (parser->completion_tracker == NULL)
{
std::vector<symtab_and_line> values
= decode_objc (PARSER_STATE (parser), PARSER_RESULT (parser), arg);
if (!values.empty ())
return values;
}
else
{
/* "-"/"+" is either an objc selector, or a number. There's
nothing to complete the latter to, so just let the caller
complete on functions, which finds objc selectors, if there's
any. */
if ((arg[0] == '-' || arg[0] == '+') && arg[1] == '\0')
return {};
}
/* Start parsing. */
/* Get the first token. */
linespec_token token = linespec_lexer_consume_token (parser);
/* It must be either LSTOKEN_STRING or LSTOKEN_NUMBER. */
if (token.type == LSTOKEN_STRING && *LS_TOKEN_STOKEN (token).ptr == '$')
{
/* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */
if (parser->completion_tracker == NULL)
PARSER_RESULT (parser)->file_symtabs.push_back (nullptr);
/* User specified a convenience variable or history value. */
gdb::unique_xmalloc_ptr<char> var = copy_token_string (token);
PARSER_EXPLICIT (parser)->line_offset
= linespec_parse_variable (PARSER_STATE (parser), var.get ());
/* If a line_offset wasn't found (VAR is the name of a user
variable/function), then skip to normal symbol processing. */
if (PARSER_EXPLICIT (parser)->line_offset.sign != LINE_OFFSET_UNKNOWN)
{
/* Consume this token. */
linespec_lexer_consume_token (parser);
goto convert_to_sals;
}
}
else if (token.type == LSTOKEN_EOI && parser->completion_tracker != NULL)
{
/* Let the default linespec_complete_what::FUNCTION kick in. */
unexpected_linespec_error (parser);
}
else if (token.type != LSTOKEN_STRING && token.type != LSTOKEN_NUMBER)
{
parser->complete_what = linespec_complete_what::NOTHING;
unexpected_linespec_error (parser);
}
/* Shortcut: If the next token is not LSTOKEN_COLON, we know that
this token cannot represent a filename. */
token = linespec_lexer_peek_token (parser);
if (token.type == LSTOKEN_COLON)
{
/* Get the current token again and extract the filename. */
token = linespec_lexer_lex_one (parser);
gdb::unique_xmalloc_ptr<char> user_filename = copy_token_string (token);
/* Check if the input is a filename. */
try
{
PARSER_RESULT (parser)->file_symtabs
= symtabs_from_filename (user_filename.get (),
PARSER_STATE (parser)->search_pspace);
}
catch (gdb_exception_error &ex)
{
file_exception = std::move (ex);
}
if (file_exception.reason >= 0)
{
/* Symtabs were found for the file. Record the filename. */
PARSER_EXPLICIT (parser)->source_filename = user_filename.release ();
/* Get the next token. */
token = linespec_lexer_consume_token (parser);
/* This is LSTOKEN_COLON; consume it. */
linespec_lexer_consume_token (parser);
}
else
{
/* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */
PARSER_RESULT (parser)->file_symtabs.push_back (nullptr);
}
}
/* If the next token is not EOI, KEYWORD, or COMMA, issue an error. */
else if (parser->completion_tracker == NULL
&& (token.type != LSTOKEN_EOI && token.type != LSTOKEN_KEYWORD
&& token.type != LSTOKEN_COMMA))
{
/* TOKEN is the _next_ token, not the one currently in the parser.
Consuming the token will give the correct error message. */
linespec_lexer_consume_token (parser);
unexpected_linespec_error (parser);
}
else
{
/* A NULL entry means to use GLOBAL_DEFAULT_SYMTAB. */
PARSER_RESULT (parser)->file_symtabs.push_back (nullptr);
}
/* Parse the rest of the linespec. */
linespec_parse_basic (parser);
if (parser->completion_tracker == NULL
&& PARSER_RESULT (parser)->function_symbols.empty ()
&& PARSER_RESULT (parser)->labels.label_symbols.empty ()
&& PARSER_EXPLICIT (parser)->line_offset.sign == LINE_OFFSET_UNKNOWN
&& PARSER_RESULT (parser)->minimal_symbols.empty ())
{
/* The linespec didn't parse. Re-throw the file exception if
there was one. */
if (file_exception.reason < 0)
throw_exception (std::move (file_exception));
/* Otherwise, the symbol is not found. */
symbol_not_found_error (PARSER_EXPLICIT (parser)->function_name,
PARSER_EXPLICIT (parser)->source_filename);
}
convert_to_sals:
/* Get the last token and record how much of the input was parsed,
if necessary. */
token = linespec_lexer_lex_one (parser);
if (token.type != LSTOKEN_EOI && token.type != LSTOKEN_KEYWORD)
unexpected_linespec_error (parser);
else if (token.type == LSTOKEN_KEYWORD)
{
/* Setup the completion word past the keyword. Lexing never
advances past a keyword automatically, so skip it
manually. */
parser->completion_word
= skip_spaces (skip_to_space (PARSER_STREAM (parser)));
parser->complete_what = linespec_complete_what::EXPRESSION;
}
/* Convert the data in PARSER_RESULT to SALs. */
if (parser->completion_tracker == NULL)
return convert_linespec_to_sals (PARSER_STATE (parser),
PARSER_RESULT (parser));
return {};
}
/* A constructor for linespec_state. */
static void
linespec_state_constructor (struct linespec_state *self,
int flags, const struct language_defn *language,
struct program_space *search_pspace,
struct symtab *default_symtab,
int default_line,
struct linespec_result *canonical)
{
memset (self, 0, sizeof (*self));
self->language = language;
self->funfirstline = (flags & DECODE_LINE_FUNFIRSTLINE) ? 1 : 0;
self->list_mode = (flags & DECODE_LINE_LIST_MODE) ? 1 : 0;
self->search_pspace = search_pspace;
self->default_symtab = default_symtab;
self->default_line = default_line;
self->canonical = canonical;
self->program_space = current_program_space;
self->addr_set = htab_create_alloc (10, hash_address_entry, eq_address_entry,
xfree, xcalloc, xfree);
self->is_linespec = 0;
}
/* Initialize a new linespec parser. */
linespec_parser::linespec_parser (int flags,
const struct language_defn *language,
struct program_space *search_pspace,
struct symtab *default_symtab,
int default_line,
struct linespec_result *canonical)
{
lexer.current.type = LSTOKEN_CONSUMED;
PARSER_EXPLICIT (this)->func_name_match_type
= symbol_name_match_type::WILD;
PARSER_EXPLICIT (this)->line_offset.sign = LINE_OFFSET_UNKNOWN;
linespec_state_constructor (PARSER_STATE (this), flags, language,
search_pspace,
default_symtab, default_line, canonical);
}
/* A destructor for linespec_state. */
static void
linespec_state_destructor (struct linespec_state *self)
{
htab_delete (self->addr_set);
xfree (self->canonical_names);
}
/* Delete a linespec parser. */
linespec_parser::~linespec_parser ()
{
linespec_state_destructor (PARSER_STATE (this));
}
/* See description in linespec.h. */
void
linespec_lex_to_end (const char **stringp)
{
linespec_token token;
const char *orig;
if (stringp == NULL || *stringp == NULL)
return;
linespec_parser parser (0, current_language, NULL, NULL, 0, NULL);
parser.lexer.saved_arg = *stringp;
PARSER_STREAM (&parser) = orig = *stringp;
do
{
/* Stop before any comma tokens; we need it to keep it
as the next token in the string. */
token = linespec_lexer_peek_token (&parser);
if (token.type == LSTOKEN_COMMA)
break;
token = linespec_lexer_consume_token (&parser);
}
while (token.type != LSTOKEN_EOI && token.type != LSTOKEN_KEYWORD);
*stringp += PARSER_STREAM (&parser) - orig;
}
/* See linespec.h. */
void
linespec_complete_function (completion_tracker &tracker,
const char *function,
symbol_name_match_type func_match_type,
const char *source_filename)
{
complete_symbol_mode mode = complete_symbol_mode::LINESPEC;
if (source_filename != NULL)
{
collect_file_symbol_completion_matches (tracker, mode, func_match_type,
function, function, source_filename);
}
else
{
collect_symbol_completion_matches (tracker, mode, func_match_type,
function, function);
}
}
/* Helper for complete_linespec to simplify it. SOURCE_FILENAME is
only meaningful if COMPONENT is FUNCTION. */
static void
complete_linespec_component (linespec_parser *parser,
completion_tracker &tracker,
const char *text,
linespec_complete_what component,
const char *source_filename)
{
if (component == linespec_complete_what::KEYWORD)
{
complete_on_enum (tracker, linespec_keywords, text, text);
}
else if (component == linespec_complete_what::EXPRESSION)
{
const char *word
= advance_to_expression_complete_word_point (tracker, text);
complete_expression (tracker, text, word);
}
else if (component == linespec_complete_what::FUNCTION)
{
completion_list fn_list;
symbol_name_match_type match_type
= PARSER_EXPLICIT (parser)->func_name_match_type;
linespec_complete_function (tracker, text, match_type, source_filename);
if (source_filename == NULL)
{
/* Haven't seen a source component, like in "b
file.c:function[TAB]". Maybe this wasn't a function, but
a filename instead, like "b file.[TAB]". */
fn_list = complete_source_filenames (text);
}
/* If we only have a single filename completion, append a ':' for
the user, since that's the only thing that can usefully follow
the filename. */
if (fn_list.size () == 1 && !tracker.have_completions ())
{
char *fn = fn_list[0].release ();
/* If we also need to append a quote char, it needs to be
appended before the ':'. Append it now, and make ':' the
new "quote" char. */
if (tracker.quote_char ())
{
char quote_char_str[2] = { (char) tracker.quote_char () };
fn = reconcat (fn, fn, quote_char_str, (char *) NULL);
tracker.set_quote_char (':');
}
else
fn = reconcat (fn, fn, ":", (char *) NULL);
fn_list[0].reset (fn);
/* Tell readline to skip appending a space. */
tracker.set_suppress_append_ws (true);
}
tracker.add_completions (std::move (fn_list));
}
}
/* Helper for linespec_complete_label. Find labels that match
LABEL_NAME in the function symbols listed in the PARSER, and add
them to the tracker. */
static void
complete_label (completion_tracker &tracker,
linespec_parser *parser,
const char *label_name)
{
std::vector<block_symbol> label_function_symbols;
std::vector<block_symbol> labels
= find_label_symbols (PARSER_STATE (parser),
PARSER_RESULT (parser)->function_symbols,
&label_function_symbols,
label_name, true);
for (const auto &label : labels)
{
char *match = xstrdup (label.symbol->search_name ());
tracker.add_completion (gdb::unique_xmalloc_ptr<char> (match));
}
}
/* See linespec.h. */
void
linespec_complete_label (completion_tracker &tracker,
const struct language_defn *language,
const char *source_filename,
const char *function_name,
symbol_name_match_type func_name_match_type,
const char *label_name)
{
linespec_parser parser (0, language, NULL, NULL, 0, NULL);
line_offset unknown_offset;
try
{
convert_explicit_location_spec_to_linespec (PARSER_STATE (&parser),
PARSER_RESULT (&parser),
source_filename,
function_name,
func_name_match_type,
NULL, unknown_offset);
}
catch (const gdb_exception_error &ex)
{
return;
}
complete_label (tracker, &parser, label_name);
}
/* See description in linespec.h. */
void
linespec_complete (completion_tracker &tracker, const char *text,
symbol_name_match_type match_type)
{
const char *orig = text;
linespec_parser parser (0, current_language, NULL, NULL, 0, NULL);
parser.lexer.saved_arg = text;
PARSER_EXPLICIT (&parser)->func_name_match_type = match_type;
PARSER_STREAM (&parser) = text;
parser.completion_tracker = &tracker;
PARSER_STATE (&parser)->is_linespec = 1;
/* Parse as much as possible. parser.completion_word will hold
furthest completion point we managed to parse to. */
try
{
parse_linespec (&parser, text, match_type);
}
catch (const gdb_exception_error &except)
{
}
if (parser.completion_quote_char != '\0'
&& parser.completion_quote_end != NULL
&& parser.completion_quote_end[1] == '\0')
{
/* If completing a quoted string with the cursor right at
terminating quote char, complete the completion word without
interpretation, so that readline advances the cursor one
whitespace past the quote, even if there's no match. This
makes these cases behave the same:
before: "b function()"
after: "b function() "
before: "b 'function()'"
after: "b 'function()' "
and trusts the user in this case:
before: "b 'not_loaded_function_yet()'"
after: "b 'not_loaded_function_yet()' "
*/
parser.complete_what = linespec_complete_what::NOTHING;
parser.completion_quote_char = '\0';
gdb::unique_xmalloc_ptr<char> text_copy
(xstrdup (parser.completion_word));
tracker.add_completion (std::move (text_copy));
}
tracker.set_quote_char (parser.completion_quote_char);
if (parser.complete_what == linespec_complete_what::LABEL)
{
parser.complete_what = linespec_complete_what::NOTHING;
const char *func_name = PARSER_EXPLICIT (&parser)->function_name;
std::vector<block_symbol> function_symbols;
std::vector<bound_minimal_symbol> minimal_symbols;
find_linespec_symbols (PARSER_STATE (&parser),
PARSER_RESULT (&parser)->file_symtabs,
func_name, match_type,
&function_symbols, &minimal_symbols);
PARSER_RESULT (&parser)->function_symbols = std::move (function_symbols);
PARSER_RESULT (&parser)->minimal_symbols = std::move (minimal_symbols);
complete_label (tracker, &parser, parser.completion_word);
}
else if (parser.complete_what == linespec_complete_what::FUNCTION)
{
/* While parsing/lexing, we didn't know whether the completion
word completes to a unique function/source name already or
not.
E.g.:
"b function() <tab>"
may need to complete either to:
"b function() const"
or to:
"b function() if/thread/task"
Or, this:
"b foo t"
may need to complete either to:
"b foo template_fun<T>()"
with "foo" being the template function's return type, or to:
"b foo thread/task"
Or, this:
"b file<TAB>"
may need to complete either to a source file name:
"b file.c"
or this, also a filename, but a unique completion:
"b file.c:"
or to a function name:
"b file_function"
Address that by completing assuming source or function, and
seeing if we find a completion that matches exactly the
completion word. If so, then it must be a function (see note
below) and we advance the completion word to the end of input
and switch to KEYWORD completion mode.
Note: if we find a unique completion for a source filename,
then it won't match the completion word, because the LCD will
contain a trailing ':'. And if we're completing at or after
the ':', then complete_linespec_component won't try to
complete on source filenames. */
const char *word = parser.completion_word;
complete_linespec_component (&parser, tracker,
parser.completion_word,
linespec_complete_what::FUNCTION,
PARSER_EXPLICIT (&parser)->source_filename);
parser.complete_what = linespec_complete_what::NOTHING;
if (tracker.quote_char ())
{
/* The function/file name was not close-quoted, so this
can't be a keyword. Note: complete_linespec_component
may have swapped the original quote char for ':' when we
get here, but that still indicates the same. */
}
else if (!tracker.have_completions ())
{
size_t key_start;
size_t wordlen = strlen (parser.completion_word);
key_start
= string_find_incomplete_keyword_at_end (linespec_keywords,
parser.completion_word,
wordlen);
if (key_start != -1
|| (wordlen > 0
&& parser.completion_word[wordlen - 1] == ' '))
{
parser.completion_word += key_start;
parser.complete_what = linespec_complete_what::KEYWORD;
}
}
else if (tracker.completes_to_completion_word (word))
{
/* Skip the function and complete on keywords. */
parser.completion_word += strlen (word);
parser.complete_what = linespec_complete_what::KEYWORD;
tracker.discard_completions ();
}
}
tracker.advance_custom_word_point_by (parser.completion_word - orig);
complete_linespec_component (&parser, tracker,
parser.completion_word,
parser.complete_what,
PARSER_EXPLICIT (&parser)->source_filename);
/* If we're past the "filename:function:label:offset" linespec, and
didn't find any match, then assume the user might want to create
a pending breakpoint anyway and offer the keyword
completions. */
if (!parser.completion_quote_char
&& (parser.complete_what == linespec_complete_what::FUNCTION
|| parser.complete_what == linespec_complete_what::LABEL
|| parser.complete_what == linespec_complete_what::NOTHING)
&& !tracker.have_completions ())
{
const char *end
= parser.completion_word + strlen (parser.completion_word);
if (end > orig && end[-1] == ' ')
{
tracker.advance_custom_word_point_by (end - parser.completion_word);
complete_linespec_component (&parser, tracker, end,
linespec_complete_what::KEYWORD,
NULL);
}
}
}
/* A helper function for decode_line_full and decode_line_1 to
turn LOCSPEC into std::vector<symtab_and_line>. */
static std::vector<symtab_and_line>
location_spec_to_sals (linespec_parser *parser,
const location_spec *locspec)
{
std::vector<symtab_and_line> result;
switch (locspec->type ())
{
case LINESPEC_LOCATION_SPEC:
{
const linespec_location_spec *ls = as_linespec_location_spec (locspec);
PARSER_STATE (parser)->is_linespec = 1;
result = parse_linespec (parser, ls->spec_string, ls->match_type);
}
break;
case ADDRESS_LOCATION_SPEC:
{
const address_location_spec *addr_spec
= as_address_location_spec (locspec);
const char *addr_string = addr_spec->to_string ();
CORE_ADDR addr;
if (addr_string != NULL)
{
addr = linespec_expression_to_pc (&addr_string);
if (PARSER_STATE (parser)->canonical != NULL)
PARSER_STATE (parser)->canonical->locspec = locspec->clone ();
}
else
addr = addr_spec->address;
result = convert_address_location_to_sals (PARSER_STATE (parser),
addr);
}
break;
case EXPLICIT_LOCATION_SPEC:
{
const explicit_location_spec *explicit_locspec
= as_explicit_location_spec (locspec);
result = convert_explicit_location_spec_to_sals (PARSER_STATE (parser),
PARSER_RESULT (parser),
explicit_locspec);
}
break;
case PROBE_LOCATION_SPEC:
/* Probes are handled by their own decoders. */
gdb_assert_not_reached ("attempt to decode probe location");
break;
default:
gdb_assert_not_reached ("unhandled location spec type");
}
return result;
}
/* See linespec.h. */
void
decode_line_full (struct location_spec *locspec, int flags,
struct program_space *search_pspace,
struct symtab *default_symtab,
int default_line, struct linespec_result *canonical,
const char *select_mode,
const char *filter)
{
std::vector<const char *> filters;
struct linespec_state *state;
gdb_assert (canonical != NULL);
/* The filter only makes sense for 'all'. */
gdb_assert (filter == NULL || select_mode == multiple_symbols_all);
gdb_assert (select_mode == NULL
|| select_mode == multiple_symbols_all
|| select_mode == multiple_symbols_ask
|| select_mode == multiple_symbols_cancel);
gdb_assert ((flags & DECODE_LINE_LIST_MODE) == 0);
linespec_parser parser (flags, current_language,
search_pspace, default_symtab,
default_line, canonical);
scoped_restore_current_program_space restore_pspace;
std::vector<symtab_and_line> result = location_spec_to_sals (&parser,
locspec);
state = PARSER_STATE (&parser);
if (result.size () == 0)
throw_error (NOT_SUPPORTED_ERROR, _("Location %s not available"),
locspec->to_string ());
gdb_assert (result.size () == 1 || canonical->pre_expanded);
canonical->pre_expanded = 1;
/* Arrange for allocated canonical names to be freed. */
std::vector<gdb::unique_xmalloc_ptr<char>> hold_names;
for (int i = 0; i < result.size (); ++i)
{
gdb_assert (state->canonical_names[i].suffix != NULL);
hold_names.emplace_back (state->canonical_names[i].suffix);
}
if (select_mode == NULL)
{
if (top_level_interpreter ()->interp_ui_out ()->is_mi_like_p ())
select_mode = multiple_symbols_all;
else
select_mode = multiple_symbols_select_mode ();
}
if (select_mode == multiple_symbols_all)
{
if (filter != NULL)
{
filters.push_back (filter);
filter_results (state, &result, filters);
}
else
convert_results_to_lsals (state, &result);
}
else
decode_line_2 (state, &result, select_mode);
}
/* See linespec.h. */
std::vector<symtab_and_line>
decode_line_1 (const location_spec *locspec, int flags,
struct program_space *search_pspace,
struct symtab *default_symtab,
int default_line)
{
linespec_parser parser (flags, current_language,
search_pspace, default_symtab,
default_line, NULL);
scoped_restore_current_program_space restore_pspace;
return location_spec_to_sals (&parser, locspec);
}
/* See linespec.h. */
std::vector<symtab_and_line>
decode_line_with_current_source (const char *string, int flags)
{
if (string == 0)
error (_("Empty line specification."));
/* We use whatever is set as the current source line. We do not try
and get a default source symtab+line or it will recursively call us! */
symtab_and_line cursal = get_current_source_symtab_and_line ();
location_spec_up locspec = string_to_location_spec (&string,
current_language);
std::vector<symtab_and_line> sals
= decode_line_1 (locspec.get (), flags, NULL, cursal.symtab, cursal.line);
if (*string)
error (_("Junk at end of line specification: %s"), string);
return sals;
}
/* See linespec.h. */
std::vector<symtab_and_line>
decode_line_with_last_displayed (const char *string, int flags)
{
if (string == 0)
error (_("Empty line specification."));
location_spec_up locspec = string_to_location_spec (&string,
current_language);
std::vector<symtab_and_line> sals
= (last_displayed_sal_is_valid ()
? decode_line_1 (locspec.get (), flags, NULL,
get_last_displayed_symtab (),
get_last_displayed_line ())
: decode_line_1 (locspec.get (), flags, NULL, NULL, 0));
if (*string)
error (_("Junk at end of line specification: %s"), string);
return sals;
}
/* First, some functions to initialize stuff at the beginning of the
function. */
static void
initialize_defaults (struct symtab **default_symtab, int *default_line)
{
if (*default_symtab == 0)
{
/* Use whatever we have for the default source line. We don't use
get_current_or_default_symtab_and_line as it can recurse and call
us back! */
struct symtab_and_line cursal =
get_current_source_symtab_and_line ();
*default_symtab = cursal.symtab;
*default_line = cursal.line;
}
}
/* Evaluate the expression pointed to by EXP_PTR into a CORE_ADDR,
advancing EXP_PTR past any parsed text. */
CORE_ADDR
linespec_expression_to_pc (const char **exp_ptr)
{
if (current_program_space->executing_startup)
/* The error message doesn't really matter, because this case
should only hit during breakpoint reset. */
throw_error (NOT_FOUND_ERROR, _("cannot evaluate expressions while "
"program space is in startup"));
(*exp_ptr)++;
return value_as_address (parse_to_comma_and_eval (exp_ptr));
}
/* Here's where we recognise an Objective-C Selector. An Objective C
selector may be implemented by more than one class, therefore it
may represent more than one method/function. This gives us a
situation somewhat analogous to C++ overloading. If there's more
than one method that could represent the selector, then use some of
the existing C++ code to let the user choose one. */
static std::vector<symtab_and_line>
decode_objc (struct linespec_state *self, linespec *ls, const char *arg)
{
struct collect_info info;
std::vector<const char *> symbol_names;
const char *new_argptr;
info.state = self;
std::vector<symtab *> symtabs;
symtabs.push_back (nullptr);
info.file_symtabs = &symtabs;
std::vector<block_symbol> symbols;
info.result.symbols = &symbols;
std::vector<bound_minimal_symbol> minimal_symbols;
info.result.minimal_symbols = &minimal_symbols;
new_argptr = find_imps (arg, &symbol_names);
if (symbol_names.empty ())
return {};
add_all_symbol_names_from_pspace (&info, NULL, symbol_names,
FUNCTIONS_DOMAIN);
std::vector<symtab_and_line> values;
if (!symbols.empty () || !minimal_symbols.empty ())
{
char *saved_arg;
saved_arg = (char *) alloca (new_argptr - arg + 1);
memcpy (saved_arg, arg, new_argptr - arg);
saved_arg[new_argptr - arg] = '\0';
ls->explicit_loc.function_name = xstrdup (saved_arg);
ls->function_symbols = std::move (symbols);
ls->minimal_symbols = std::move (minimal_symbols);
values = convert_linespec_to_sals (self, ls);
if (self->canonical)
{
std::string holder;
const char *str;
self->canonical->pre_expanded = 1;
if (ls->explicit_loc.source_filename)
{
holder = string_printf ("%s:%s",
ls->explicit_loc.source_filename,
saved_arg);
str = holder.c_str ();
}
else
str = saved_arg;
self->canonical->locspec
= new_linespec_location_spec (&str, symbol_name_match_type::FULL);
}
}
return values;
}
namespace {
/* A function object that serves as symbol_found_callback_ftype
callback for iterate_over_symbols. This is used by
lookup_prefix_sym to collect type symbols. */
class decode_compound_collector
{
public:
decode_compound_collector ()
: m_unique_syms (htab_create_alloc (1, htab_hash_pointer,
htab_eq_pointer, NULL,
xcalloc, xfree))
{
}
/* Return all symbols collected. */
std::vector<block_symbol> release_symbols ()
{
return std::move (m_symbols);
}
/* Callable as a symbol_found_callback_ftype callback. */
bool operator () (block_symbol *bsym);
private:
/* A hash table of all symbols we found. We use this to avoid
adding any symbol more than once. */
htab_up m_unique_syms;
/* The result vector. */
std::vector<block_symbol> m_symbols;
};
bool
decode_compound_collector::operator () (block_symbol *bsym)
{
void **slot;
struct type *t;
struct symbol *sym = bsym->symbol;
if (sym->aclass () != LOC_TYPEDEF)
return true; /* Continue iterating. */
t = sym->type ();
t = check_typedef (t);
if (t->code () != TYPE_CODE_STRUCT
&& t->code () != TYPE_CODE_UNION
&& t->code () != TYPE_CODE_NAMESPACE)
return true; /* Continue iterating. */
slot = htab_find_slot (m_unique_syms.get (), sym, INSERT);
if (!*slot)
{
*slot = sym;
m_symbols.push_back (*bsym);
}
return true; /* Continue iterating. */
}
} // namespace
/* Return any symbols corresponding to CLASS_NAME in FILE_SYMTABS. */
static std::vector<block_symbol>
lookup_prefix_sym (struct linespec_state *state,
const std::vector<symtab *> &file_symtabs,
const char *class_name)
{
decode_compound_collector collector;
lookup_name_info lookup_name (class_name, symbol_name_match_type::FULL);
for (const auto &elt : file_symtabs)
{
if (elt == nullptr)
{
iterate_over_all_matching_symtabs (state, lookup_name,
STRUCT_DOMAIN, ALL_DOMAIN,
NULL, false, collector);
iterate_over_all_matching_symtabs (state, lookup_name,
VAR_DOMAIN, ALL_DOMAIN,
NULL, false, collector);
}
else
{
/* Program spaces that are executing startup should have
been filtered out earlier. */
program_space *pspace = elt->compunit ()->objfile ()->pspace;
gdb_assert (!pspace->executing_startup);
set_current_program_space (pspace);
iterate_over_file_blocks (elt, lookup_name, STRUCT_DOMAIN, collector);
iterate_over_file_blocks (elt, lookup_name, VAR_DOMAIN, collector);
}
}
return collector.release_symbols ();
}
/* A std::sort comparison function for symbols. The resulting order does
not actually matter; we just need to be able to sort them so that
symbols with the same program space end up next to each other. */
static bool
compare_symbols (const block_symbol &a, const block_symbol &b)
{
uintptr_t uia, uib;
uia = (uintptr_t) a.symbol->symtab ()->compunit ()->objfile ()->pspace;
uib = (uintptr_t) b.symbol->symtab ()->compunit ()->objfile ()->pspace;
if (uia < uib)
return true;
if (uia > uib)
return false;
uia = (uintptr_t) a.symbol;
uib = (uintptr_t) b.symbol;
if (uia < uib)
return true;
return false;
}
/* Like compare_symbols but for minimal symbols. */
static bool
compare_msymbols (const bound_minimal_symbol &a, const bound_minimal_symbol &b)
{
uintptr_t uia, uib;
uia = (uintptr_t) a.objfile->pspace;
uib = (uintptr_t) a.objfile->pspace;
if (uia < uib)
return true;
if (uia > uib)
return false;
uia = (uintptr_t) a.minsym;
uib = (uintptr_t) b.minsym;
if (uia < uib)
return true;
return false;
}
/* Look for all the matching instances of each symbol in NAMES. Only
instances from PSPACE are considered; other program spaces are
handled by our caller. If PSPACE is NULL, then all program spaces
are considered. Results are stored into INFO. */
static void
add_all_symbol_names_from_pspace (struct collect_info *info,
struct program_space *pspace,
const std::vector<const char *> &names,
enum search_domain search_domain)
{
for (const char *iter : names)
add_matching_symbols_to_info (iter,
symbol_name_match_type::FULL,
search_domain, info, pspace);
}
static void
find_superclass_methods (std::vector<struct type *> &&superclasses,
const char *name, enum language name_lang,
std::vector<const char *> *result_names)
{
size_t old_len = result_names->size ();
while (1)
{
std::vector<struct type *> new_supers;
for (type *t : superclasses)
find_methods (t, name_lang, name, result_names, &new_supers);
if (result_names->size () != old_len || new_supers.empty ())
break;
superclasses = std::move (new_supers);
}
}
/* This finds the method METHOD_NAME in the class CLASS_NAME whose type is
given by one of the symbols in SYM_CLASSES. Matches are returned
in SYMBOLS (for debug symbols) and MINSYMS (for minimal symbols). */
static void
find_method (struct linespec_state *self,
const std::vector<symtab *> &file_symtabs,
const char *class_name, const char *method_name,
std::vector<block_symbol> *sym_classes,
std::vector<block_symbol> *symbols,
std::vector<bound_minimal_symbol> *minsyms)
{
size_t last_result_len;
std::vector<struct type *> superclass_vec;
std::vector<const char *> result_names;
struct collect_info info;
/* Sort symbols so that symbols with the same program space are next
to each other. */
std::sort (sym_classes->begin (), sym_classes->end (),
compare_symbols);
info.state = self;
info.file_symtabs = &file_symtabs;
info.result.symbols = symbols;
info.result.minimal_symbols = minsyms;
/* Iterate over all the types, looking for the names of existing
methods matching METHOD_NAME. If we cannot find a direct method in a
given program space, then we consider inherited methods; this is
not ideal (ideal would be to respect C++ hiding rules), but it
seems good enough and is what GDB has historically done. We only
need to collect the names because later we find all symbols with
those names. This loop is written in a somewhat funny way
because we collect data across the program space before deciding
what to do. */
last_result_len = 0;
for (const auto &elt : *sym_classes)
{
struct type *t;
struct program_space *pspace;
struct symbol *sym = elt.symbol;
unsigned int ix = &elt - &*sym_classes->begin ();
/* Program spaces that are executing startup should have
been filtered out earlier. */
pspace = sym->symtab ()->compunit ()->objfile ()->pspace;
gdb_assert (!pspace->executing_startup);
set_current_program_space (pspace);
t = check_typedef (sym->type ());
find_methods (t, sym->language (),
method_name, &result_names, &superclass_vec);
/* Handle all items from a single program space at once; and be
sure not to miss the last batch. */
if (ix == sym_classes->size () - 1
|| (pspace
!= (sym_classes->at (ix + 1).symbol->symtab ()
->compunit ()->objfile ()->pspace)))
{
/* If we did not find a direct implementation anywhere in
this program space, consider superclasses. */
if (result_names.size () == last_result_len)
find_superclass_methods (std::move (superclass_vec), method_name,
sym->language (), &result_names);
/* We have a list of candidate symbol names, so now we
iterate over the symbol tables looking for all
matches in this pspace. */
add_all_symbol_names_from_pspace (&info, pspace, result_names,
FUNCTIONS_DOMAIN);
superclass_vec.clear ();
last_result_len = result_names.size ();
}
}
if (!symbols->empty () || !minsyms->empty ())
return;
/* Throw an NOT_FOUND_ERROR. This will be caught by the caller
and other attempts to locate the symbol will be made. */
throw_error (NOT_FOUND_ERROR, _("see caller, this text doesn't matter"));
}
namespace {
/* This function object is a callback for iterate_over_symtabs, used
when collecting all matching symtabs. */
class symtab_collector
{
public:
symtab_collector ()
: m_symtab_table (htab_create (1, htab_hash_pointer, htab_eq_pointer,
NULL))
{
}
/* Callable as a symbol_found_callback_ftype callback. */
bool operator () (symtab *sym);
/* Return an rvalue reference to the collected symtabs. */
std::vector<symtab *> &&release_symtabs ()
{
return std::move (m_symtabs);
}
private:
/* The result vector of symtabs. */
std::vector<symtab *> m_symtabs;
/* This is used to ensure the symtabs are unique. */
htab_up m_symtab_table;
};
bool
symtab_collector::operator () (struct symtab *symtab)
{
void **slot;
slot = htab_find_slot (m_symtab_table.get (), symtab, INSERT);
if (!*slot)
{
*slot = symtab;
m_symtabs.push_back (symtab);
}
return false;
}
} // namespace
/* Given a file name, return a list of all matching symtabs. If
SEARCH_PSPACE is not NULL, the search is restricted to just that
program space. */
static std::vector<symtab *>
collect_symtabs_from_filename (const char *file,
struct program_space *search_pspace)
{
symtab_collector collector;
/* Find that file's data. */
if (search_pspace == NULL)
{
for (struct program_space *pspace : program_spaces)
{
if (pspace->executing_startup)
continue;
set_current_program_space (pspace);
iterate_over_symtabs (file, collector);
}
}
else
{
set_current_program_space (search_pspace);
iterate_over_symtabs (file, collector);
}
return collector.release_symtabs ();
}
/* Return all the symtabs associated to the FILENAME. If SEARCH_PSPACE is
not NULL, the search is restricted to just that program space. */
static std::vector<symtab *>
symtabs_from_filename (const char *filename,
struct program_space *search_pspace)
{
std::vector<symtab *> result
= collect_symtabs_from_filename (filename, search_pspace);
if (result.empty ())
{
if (!have_full_symbols () && !have_partial_symbols ())
throw_error (NOT_FOUND_ERROR,
_("No symbol table is loaded. "
"Use the \"file\" command."));
source_file_not_found_error (filename);
}
return result;
}
/* See symtab.h. */
void
symbol_searcher::find_all_symbols (const std::string &name,
const struct language_defn *language,
enum search_domain search_domain,
std::vector<symtab *> *search_symtabs,
struct program_space *search_pspace)
{
symbol_searcher_collect_info info;
struct linespec_state state;
memset (&state, 0, sizeof (state));
state.language = language;
info.state = &state;
info.result.symbols = &m_symbols;
info.result.minimal_symbols = &m_minimal_symbols;
std::vector<symtab *> all_symtabs;
if (search_symtabs == nullptr)
{
all_symtabs.push_back (nullptr);
search_symtabs = &all_symtabs;
}
info.file_symtabs = search_symtabs;
add_matching_symbols_to_info (name.c_str (), symbol_name_match_type::WILD,
search_domain, &info, search_pspace);
}
/* Look up a function symbol named NAME in symtabs FILE_SYMTABS. Matching
debug symbols are returned in SYMBOLS. Matching minimal symbols are
returned in MINSYMS. */
static void
find_function_symbols (struct linespec_state *state,
const std::vector<symtab *> &file_symtabs, const char *name,
symbol_name_match_type name_match_type,
std::vector<block_symbol> *symbols,
std::vector<bound_minimal_symbol> *minsyms)
{
struct collect_info info;
std::vector<const char *> symbol_names;
info.state = state;
info.result.symbols = symbols;
info.result.minimal_symbols = minsyms;
info.file_symtabs = &file_symtabs;
/* Try NAME as an Objective-C selector. */
find_imps (name, &symbol_names);
if (!symbol_names.empty ())
add_all_symbol_names_from_pspace (&info, state->search_pspace,
symbol_names, FUNCTIONS_DOMAIN);
else
add_matching_symbols_to_info (name, name_match_type, FUNCTIONS_DOMAIN,
&info, state->search_pspace);
}
/* Find all symbols named NAME in FILE_SYMTABS, returning debug symbols
in SYMBOLS and minimal symbols in MINSYMS. */
static void
find_linespec_symbols (struct linespec_state *state,
const std::vector<symtab *> &file_symtabs,
const char *lookup_name,
symbol_name_match_type name_match_type,
std::vector <block_symbol> *symbols,
std::vector<bound_minimal_symbol> *minsyms)
{
gdb::unique_xmalloc_ptr<char> canon
= cp_canonicalize_string_no_typedefs (lookup_name);
if (canon != nullptr)
lookup_name = canon.get ();
/* It's important to not call expand_symtabs_matching unnecessarily
as it can really slow things down (by unnecessarily expanding
potentially 1000s of symtabs, which when debugging some apps can
cost 100s of seconds). Avoid this to some extent by *first* calling
find_function_symbols, and only if that doesn't find anything
*then* call find_method. This handles two important cases:
1) break (anonymous namespace)::foo
2) break class::method where method is in class (and not a baseclass) */
find_function_symbols (state, file_symtabs, lookup_name,
name_match_type, symbols, minsyms);
/* If we were unable to locate a symbol of the same name, try dividing
the name into class and method names and searching the class and its
baseclasses. */
if (symbols->empty () && minsyms->empty ())
{
std::string klass, method;
const char *last, *p, *scope_op;
/* See if we can find a scope operator and break this symbol
name into namespaces${SCOPE_OPERATOR}class_name and method_name. */
scope_op = "::";
p = find_toplevel_string (lookup_name, scope_op);
last = NULL;
while (p != NULL)
{
last = p;
p = find_toplevel_string (p + strlen (scope_op), scope_op);
}
/* If no scope operator was found, there is nothing more we can do;
we already attempted to lookup the entire name as a symbol
and failed. */
if (last == NULL)
return;
/* LOOKUP_NAME points to the class name.
LAST points to the method name. */
klass = std::string (lookup_name, last - lookup_name);
/* Skip past the scope operator. */
last += strlen (scope_op);
method = last;
/* Find a list of classes named KLASS. */
std::vector<block_symbol> classes
= lookup_prefix_sym (state, file_symtabs, klass.c_str ());
if (!classes.empty ())
{
/* Now locate a list of suitable methods named METHOD. */
try
{
find_method (state, file_symtabs,
klass.c_str (), method.c_str (),
&classes, symbols, minsyms);
}
/* If successful, we're done. If NOT_FOUND_ERROR
was not thrown, rethrow the exception that we did get. */
catch (const gdb_exception_error &except)
{
if (except.error != NOT_FOUND_ERROR)
throw;
}
}
}
}
/* Helper for find_label_symbols. Find all labels that match name
NAME in BLOCK. Return all labels that match in FUNCTION_SYMBOLS.
Return the actual function symbol in which the label was found in
LABEL_FUNC_RET. If COMPLETION_MODE is true, then NAME is
interpreted as a label name prefix. Otherwise, only a label named
exactly NAME match. */
static void
find_label_symbols_in_block (const struct block *block,
const char *name, struct symbol *fn_sym,
bool completion_mode,
std::vector<block_symbol> *result,
std::vector<block_symbol> *label_funcs_ret)
{
if (completion_mode)
{
struct block_iterator iter;
struct symbol *sym;
size_t name_len = strlen (name);
int (*cmp) (const char *, const char *, size_t);
cmp = case_sensitivity == case_sensitive_on ? strncmp : strncasecmp;
ALL_BLOCK_SYMBOLS (block, iter, sym)
{
if (symbol_matches_domain (sym->language (),
sym->domain (), LABEL_DOMAIN)
&& cmp (sym->search_name (), name, name_len) == 0)
{
result->push_back ({sym, block});
label_funcs_ret->push_back ({fn_sym, block});
}
}
}
else
{
struct block_symbol label_sym
= lookup_symbol (name, block, LABEL_DOMAIN, 0);
if (label_sym.symbol != NULL)
{
result->push_back (label_sym);
label_funcs_ret->push_back ({fn_sym, block});
}
}
}
/* Return all labels that match name NAME in FUNCTION_SYMBOLS.
Return the actual function symbol in which the label was found in
LABEL_FUNC_RET. If COMPLETION_MODE is true, then NAME is
interpreted as a label name prefix. Otherwise, only labels named
exactly NAME match. */
static std::vector<block_symbol>
find_label_symbols (struct linespec_state *self,
const std::vector<block_symbol> &function_symbols,
std::vector<block_symbol> *label_funcs_ret,
const char *name,
bool completion_mode)
{
const struct block *block;
struct symbol *fn_sym;
std::vector<block_symbol> result;
if (function_symbols.empty ())
{
set_current_program_space (self->program_space);
block = get_current_search_block ();
for (;
block && !block->function ();
block = block->superblock ())
;
if (!block)
return {};
fn_sym = block->function ();
find_label_symbols_in_block (block, name, fn_sym, completion_mode,
&result, label_funcs_ret);
}
else
{
for (const auto &elt : function_symbols)
{
fn_sym = elt.symbol;
set_current_program_space
(fn_sym->symtab ()->compunit ()->objfile ()->pspace);
block = fn_sym->value_block ();
find_label_symbols_in_block (block, name, fn_sym, completion_mode,
&result, label_funcs_ret);
}
}
return result;
}
/* A helper for create_sals_line_offset that handles the 'list_mode' case. */
static std::vector<symtab_and_line>
decode_digits_list_mode (struct linespec_state *self,
linespec *ls,
struct symtab_and_line val)
{
gdb_assert (self->list_mode);
std::vector<symtab_and_line> values;
for (const auto &elt : ls->file_symtabs)
{
/* The logic above should ensure this. */
gdb_assert (elt != NULL);
program_space *pspace = elt->compunit ()->objfile ()->pspace;
set_current_program_space (pspace);
/* Simplistic search just for the list command. */
val.symtab = find_line_symtab (elt, val.line, NULL, NULL);
if (val.symtab == NULL)
val.symtab = elt;
val.pspace = pspace;
val.pc = 0;
val.explicit_line = true;
add_sal_to_sals (self, &values, &val, NULL, 0);
}
return values;
}
/* A helper for create_sals_line_offset that iterates over the symtabs
associated with LS and returns a vector of corresponding symtab_and_line
structures. */
static std::vector<symtab_and_line>
decode_digits_ordinary (struct linespec_state *self,
linespec *ls,
int line,
struct linetable_entry **best_entry)
{
std::vector<symtab_and_line> sals;
for (const auto &elt : ls->file_symtabs)
{
std::vector<CORE_ADDR> pcs;
/* The logic above should ensure this. */
gdb_assert (elt != NULL);
program_space *pspace = elt->compunit ()->objfile ()->pspace;
set_current_program_space (pspace);
pcs = find_pcs_for_symtab_line (elt, line, best_entry);
for (CORE_ADDR pc : pcs)
{
symtab_and_line sal;
sal.pspace = pspace;
sal.symtab = elt;
sal.line = line;
sal.explicit_line = true;
sal.pc = pc;
sals.push_back (std::move (sal));
}
}
return sals;
}
/* Return the line offset represented by VARIABLE. */
static struct line_offset
linespec_parse_variable (struct linespec_state *self, const char *variable)
{
int index = 0;
const char *p;
line_offset offset;
p = (variable[1] == '$') ? variable + 2 : variable + 1;
if (*p == '$')
++p;
while (*p >= '0' && *p <= '9')
++p;
if (!*p) /* Reached end of token without hitting non-digit. */
{
/* We have a value history reference. */
struct value *val_history;
sscanf ((variable[1] == '$') ? variable + 2 : variable + 1, "%d", &index);
val_history
= access_value_history ((variable[1] == '$') ? -index : index);
if (value_type (val_history)->code () != TYPE_CODE_INT)
error (_("History values used in line "
"specs must have integer values."));
offset.offset = value_as_long (val_history);
offset.sign = LINE_OFFSET_NONE;
}
else
{
/* Not all digits -- may be user variable/function or a
convenience variable. */
LONGEST valx;
struct internalvar *ivar;
/* Try it as a convenience variable. If it is not a convenience
variable, return and allow normal symbol lookup to occur. */
ivar = lookup_only_internalvar (variable + 1);
/* If there's no internal variable with that name, let the
offset remain as unknown to allow the name to be looked up
as a symbol. */
if (ivar != nullptr)
{
/* We found a valid variable name. If it is not an integer,
throw an error. */
if (!get_internalvar_integer (ivar, &valx))
error (_("Convenience variables used in line "
"specs must have integer values."));
else
{
offset.offset = valx;
offset.sign = LINE_OFFSET_NONE;
}
}
}
return offset;
}
/* We've found a minimal symbol MSYMBOL in OBJFILE to associate with our
linespec; return the SAL in RESULT. This function should return SALs
matching those from find_function_start_sal, otherwise false
multiple-locations breakpoints could be placed. */
static void
minsym_found (struct linespec_state *self, struct objfile *objfile,
struct minimal_symbol *msymbol,
std::vector<symtab_and_line> *result)
{
bool want_start_sal = false;
CORE_ADDR func_addr;
bool is_function = msymbol_is_function (objfile, msymbol, &func_addr);
if (is_function)
{
const char *msym_name = msymbol->linkage_name ();
if (msymbol->type () == mst_text_gnu_ifunc
|| msymbol->type () == mst_data_gnu_ifunc)
want_start_sal = gnu_ifunc_resolve_name (msym_name, &func_addr);
else
want_start_sal = true;
}
symtab_and_line sal;
if (is_function && want_start_sal)
sal = find_function_start_sal (func_addr, NULL, self->funfirstline);
else
{
sal.objfile = objfile;
sal.msymbol = msymbol;
/* Store func_addr, not the minsym's address in case this was an
ifunc that hasn't been resolved yet. */
if (is_function)
sal.pc = func_addr;
else
sal.pc = msymbol->value_address (objfile);
sal.pspace = current_program_space;
}
sal.section = msymbol->obj_section (objfile);
if (maybe_add_address (self->addr_set, objfile->pspace, sal.pc))
add_sal_to_sals (self, result, &sal, msymbol->natural_name (), 0);
}
/* Helper for search_minsyms_for_name that adds the symbol to the
result. */
static void
add_minsym (struct minimal_symbol *minsym, struct objfile *objfile,
struct symtab *symtab, int list_mode,
std::vector<struct bound_minimal_symbol> *msyms)
{
if (symtab != NULL)
{
/* We're looking for a label for which we don't have debug
info. */
CORE_ADDR func_addr;
if (msymbol_is_function (objfile, minsym, &func_addr))
{
symtab_and_line sal = find_pc_sect_line (func_addr, NULL, 0);
if (symtab != sal.symtab)
return;
}
}
/* Exclude data symbols when looking for breakpoint locations. */
if (!list_mode && !msymbol_is_function (objfile, minsym))
return;
msyms->emplace_back (minsym, objfile);
return;
}
/* Search for minimal symbols called NAME. If SEARCH_PSPACE
is not NULL, the search is restricted to just that program
space.
If SYMTAB is NULL, search all objfiles, otherwise
restrict results to the given SYMTAB. */
static void
search_minsyms_for_name (struct collect_info *info,
const lookup_name_info &name,
struct program_space *search_pspace,
struct symtab *symtab)
{
std::vector<struct bound_minimal_symbol> minsyms;
if (symtab == NULL)
{
for (struct program_space *pspace : program_spaces)
{
if (search_pspace != NULL && search_pspace != pspace)
continue;
if (pspace->executing_startup)
continue;
set_current_program_space (pspace);
for (objfile *objfile : current_program_space->objfiles ())
{
iterate_over_minimal_symbols (objfile, name,
[&] (struct minimal_symbol *msym)
{
add_minsym (msym, objfile, nullptr,
info->state->list_mode,
&minsyms);
return false;
});
}
}
}
else
{
program_space *pspace = symtab->compunit ()->objfile ()->pspace;
if (search_pspace == NULL || pspace == search_pspace)
{
set_current_program_space (pspace);
iterate_over_minimal_symbols
(symtab->compunit ()->objfile (), name,
[&] (struct minimal_symbol *msym)
{
add_minsym (msym, symtab->compunit ()->objfile (), symtab,
info->state->list_mode, &minsyms);
return false;
});
}
}
/* Return true if TYPE is a static symbol. */
auto msymbol_type_is_static = [] (enum minimal_symbol_type type)
{
switch (type)
{
case mst_file_text:
case mst_file_data:
case mst_file_bss:
return true;
default:
return false;
}
};
/* Add minsyms to the result set, but filter out trampoline symbols
if we also found extern symbols with the same name. I.e., don't
set a breakpoint on both '<foo@plt>' and 'foo', assuming that
'foo' is the symbol that the plt resolves to. */
for (const bound_minimal_symbol &item : minsyms)
{
bool skip = false;
if (item.minsym->type () == mst_solib_trampoline)
{
for (const bound_minimal_symbol &item2 : minsyms)
{
if (&item2 == &item)
continue;
/* Trampoline symbols can only jump to exported
symbols. */
if (msymbol_type_is_static (item2.minsym->type ()))
continue;
if (strcmp (item.minsym->linkage_name (),
item2.minsym->linkage_name ()) != 0)
continue;
/* Found a global minsym with the same name as the
trampoline. Don't create a location for this
trampoline. */
skip = true;
break;
}
}
if (!skip)
info->result.minimal_symbols->push_back (item);
}
}
/* A helper function to add all symbols matching NAME to INFO. If
PSPACE is not NULL, the search is restricted to just that program
space. */
static void
add_matching_symbols_to_info (const char *name,
symbol_name_match_type name_match_type,
enum search_domain search_domain,
struct collect_info *info,
struct program_space *pspace)
{
lookup_name_info lookup_name (name, name_match_type);
for (const auto &elt : *info->file_symtabs)
{
if (elt == nullptr)
{
iterate_over_all_matching_symtabs (info->state, lookup_name,
VAR_DOMAIN, search_domain,
pspace, true,
[&] (block_symbol *bsym)
{ return info->add_symbol (bsym); });
search_minsyms_for_name (info, lookup_name, pspace, NULL);
}
else if (pspace == NULL || pspace == elt->compunit ()->objfile ()->pspace)
{
int prev_len = info->result.symbols->size ();
/* Program spaces that are executing startup should have
been filtered out earlier. */
program_space *elt_pspace = elt->compunit ()->objfile ()->pspace;
gdb_assert (!elt_pspace->executing_startup);
set_current_program_space (elt_pspace);
iterate_over_file_blocks (elt, lookup_name, VAR_DOMAIN,
[&] (block_symbol *bsym)
{ return info->add_symbol (bsym); });
/* If no new symbols were found in this iteration and this symtab
is in assembler, we might actually be looking for a label for
which we don't have debug info. Check for a minimal symbol in
this case. */
if (prev_len == info->result.symbols->size ()
&& elt->language () == language_asm)
search_minsyms_for_name (info, lookup_name, pspace, elt);
}
}
}
/* Now come some functions that are called from multiple places within
decode_line_1. */
static int
symbol_to_sal (struct symtab_and_line *result,
int funfirstline, struct symbol *sym)
{
if (sym->aclass () == LOC_BLOCK)
{
*result = find_function_start_sal (sym, funfirstline);
return 1;
}
else
{
if (sym->aclass () == LOC_LABEL && sym->value_address () != 0)
{
*result = {};
result->symtab = sym->symtab ();
result->symbol = sym;
result->line = sym->line ();
result->pc = sym->value_address ();
result->pspace = result->symtab->compunit ()->objfile ()->pspace;
result->explicit_pc = 1;
return 1;
}
else if (funfirstline)
{
/* Nothing. */
}
else if (sym->line () != 0)
{
/* We know its line number. */
*result = {};
result->symtab = sym->symtab ();
result->symbol = sym;
result->line = sym->line ();
result->pc = sym->value_address ();
result->pspace = result->symtab->compunit ()->objfile ()->pspace;
return 1;
}
}
return 0;
}
linespec_result::~linespec_result ()
{
for (linespec_sals &lsal : lsals)
xfree (lsal.canonical);
}
/* Return the quote characters permitted by the linespec parser. */
const char *
get_gdb_linespec_parser_quote_characters (void)
{
return linespec_quote_characters;
}
|