summaryrefslogtreecommitdiff
path: root/gdb/hp-psymtab-read.c
blob: 0d2b236fecdec2010f85fa639f568c9ee0c53020 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
/* Read hp debug symbols and convert to internal format, for GDB.
   Copyright 1993, 1996, 1998, 1999 Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

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

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.

   Written by the Center for Software Science at the University of Utah
   and by Cygnus Support.  */

/* Common include file for hp_symtab_read.c and hp_psymtab_read.c.
   This has nested includes of a bunch of stuff. */
#include "hpread.h"
#include "demangle.h"

/* To generate dumping code, uncomment this define.  The dumping
   itself is controlled by routine-local statics called "dumping". */
/* #define DUMPING         1 */

/* To use the quick look-up tables, uncomment this define. */
#define QUICK_LOOK_UP      1

/* To call PXDB to process un-processed files, uncomment this define. */
#define USE_PXDB           1

/* Forward procedure declarations */

void hpread_symfile_init
  PARAMS ((struct objfile *));

void
do_pxdb PARAMS ((bfd *));

void hpread_build_psymtabs
  PARAMS ((struct objfile *, struct section_offsets *, int));

void hpread_symfile_finish
  PARAMS ((struct objfile *));

static union dnttentry *hpread_get_gntt
  PARAMS ((int, struct objfile *));

static unsigned long hpread_get_textlow
  PARAMS ((int, int, struct objfile *, int));

static struct partial_symtab *hpread_start_psymtab
  PARAMS ((struct objfile *, struct section_offsets *, char *, CORE_ADDR, int,
	   struct partial_symbol **, struct partial_symbol **));

static struct partial_symtab *hpread_end_psymtab
  PARAMS ((struct partial_symtab *, char **, int, int, CORE_ADDR,
	   struct partial_symtab **, int));

/* End of forward routine declarations */

#ifdef USE_PXDB

/* NOTE use of system files!  May not be portable. */

#define PXDB_SVR4 "/opt/langtools/bin/pxdb"
#define PXDB_BSD  "/usr/bin/pxdb"

#include <stdlib.h>
#include <string.h>
#include <unistd.h>

/* check for the existance of a file, given its full pathname */
int
file_exists (filename)
     char *filename;
{
  if (filename)
    return (access (filename, F_OK) == 0);
  return 0;
}


/* Translate from the "hp_language" enumeration in hp-symtab.h
   used in the debug info to gdb's generic enumeration in defs.h. */
static enum language
trans_lang (in_lang)
     enum hp_language in_lang;
{
  if (in_lang == HP_LANGUAGE_C)
    return language_c;

  else if (in_lang == HP_LANGUAGE_CPLUSPLUS)
    return language_cplus;

  else if (in_lang == HP_LANGUAGE_F77)
    return language_fortran;

  else
    return language_unknown;
}

static char main_string[] = "main";

/* Call PXDB to process our file.

   Approach copied from DDE's "dbgk_run_pxdb".  Note: we
   don't check for BSD location of pxdb, nor for existance
   of pxdb itself, etc.

   NOTE: uses system function and string functions directly.

   Return value: 1 if ok, 0 if not */
int
hpread_call_pxdb (file_name)
     char *file_name;
{
  char *p;
  int status;
  int retval;

  if (file_exists (PXDB_SVR4))
    {
      p = malloc (strlen (PXDB_SVR4) + strlen (file_name) + 2);
      strcpy (p, PXDB_SVR4);
      strcat (p, " ");
      strcat (p, file_name);

      warning ("File not processed by pxdb--about to process now.\n");
      status = system (p);

      retval = (status == 0);
    }
  else
    {
      warning ("pxdb not found at standard location: /opt/langtools/bin\ngdb will not be able to debug %s.\nPlease install pxdb at the above location and then restart gdb.\nYou can also run pxdb on %s with the command\n\"pxdb %s\" and then restart gdb.", file_name, file_name, file_name);

      retval = 0;
    }
  return retval;
}				/* hpread_call_pxdb */


/* Return 1 if the file turns out to need pre-processing
   by PXDB, and we have thus called PXDB to do this processing
   and the file therefore needs to be re-loaded.  Otherwise
   return 0. */
int
hpread_pxdb_needed (sym_bfd)
     bfd *sym_bfd;
{
  asection *pinfo_section, *debug_section, *header_section;
  unsigned int do_pxdb;
  char *buf;
  bfd_size_type header_section_size;

  unsigned long tmp;
  unsigned int pxdbed;

  header_section = bfd_get_section_by_name (sym_bfd, "$HEADER$");
  if (!header_section)
    {
      return 0;			/* No header at all, can't recover... */
    }

  debug_section = bfd_get_section_by_name (sym_bfd, "$DEBUG$");
  pinfo_section = bfd_get_section_by_name (sym_bfd, "$PINFO$");

  if (pinfo_section && !debug_section)
    {
      /* Debug info with DOC, has different header format. 
         this only happens if the file was pxdbed and compiled optimized
         otherwise the PINFO section is not there. */
      header_section_size = bfd_section_size (objfile->obfd, header_section);

      if (header_section_size == (bfd_size_type) sizeof (DOC_info_PXDB_header))
	{
	  buf = alloca (sizeof (DOC_info_PXDB_header));

	  if (!bfd_get_section_contents (sym_bfd,
					 header_section,
					 buf, 0,
					 header_section_size))
	    error ("bfd_get_section_contents\n");

	  tmp = bfd_get_32 (sym_bfd, (bfd_byte *) (buf + sizeof (int) * 4));
	  pxdbed = (tmp >> 31) & 0x1;

	  if (!pxdbed)
	    error ("file debug header info invalid\n");
	  do_pxdb = 0;
	}

      else
	error ("invalid $HEADER$ size in executable \n");
    }

  else
    {

      /* this can be three different cases:
         1. pxdbed and not doc
         - DEBUG and HEADER sections are there
         - header is PXDB_header type
         - pxdbed flag is set to 1

         2. not pxdbed and doc
         - DEBUG and HEADER  sections are there
         - header is DOC_info_header type
         - pxdbed flag is set to 0

         3. not pxdbed and not doc
         - DEBUG and HEADER sections are there
         - header is XDB_header type
         - pxdbed flag is set to 0

         NOTE: the pxdbed flag is meaningful also in the not
         already pxdb processed version of the header,
         because in case on non-already processed by pxdb files
         that same bit in the header would be always zero.
         Why? Because the bit is the leftmost bit of a word
         which contains a 'length' which is always a positive value
         so that bit is never set to 1 (otherwise it would be negative)

         Given the above, we have two choices : either we ignore the
         size of the header itself and just look at the pxdbed field,
         or we check the size and then we (for safety and paranoia related
         issues) check the bit.
         The first solution is used by DDE, the second by PXDB itself.
         I am using the second one here, because I already wrote it,
         and it is the end of a long day.
         Also, using the first approach would still involve size issues
         because we need to read in the contents of the header section, and
         give the correct amount of stuff we want to read to the
         get_bfd_section_contents function.  */

      /* decide which case depending on the size of the header section.
         The size is as defined in hp-symtab.h  */

      header_section_size = bfd_section_size (objfile->obfd, header_section);

      if (header_section_size == (bfd_size_type) sizeof (PXDB_header))	/* pxdb and not doc */
	{

	  buf = alloca (sizeof (PXDB_header));
	  if (!bfd_get_section_contents (sym_bfd,
					 header_section,
					 buf, 0,
					 header_section_size))
	    error ("bfd_get_section_contents\n");

	  tmp = bfd_get_32 (sym_bfd, (bfd_byte *) (buf + sizeof (int) * 3));
	  pxdbed = (tmp >> 31) & 0x1;

	  if (pxdbed)
	    do_pxdb = 0;
	  else
	    error ("file debug header invalid\n");
	}
      else			/*not pxdbed and doc OR not pxdbed and non doc */
	do_pxdb = 1;
    }

  if (do_pxdb)
    {
      return 1;
    }
  else
    {
      return 0;
    }
}				/* hpread_pxdb_needed */

#endif

/* Check whether the file needs to be preprocessed by pxdb. 
   If so, call pxdb. */

void
do_pxdb (sym_bfd)
     bfd *sym_bfd;
{
  /* The following code is HP-specific.  The "right" way of
     doing this is unknown, but we bet would involve a target-
     specific pre-file-load check using a generic mechanism. */

  /* This code will not be executed if the file is not in SOM
     format (i.e. if compiled with gcc) */
  if (hpread_pxdb_needed (sym_bfd))
    {
      /*This file has not been pre-processed. Preprocess now */

      if (hpread_call_pxdb (sym_bfd->filename))
	{
	  /* The call above has changed the on-disk file, 
	     we can close the file anyway, because the
	     symbols will be reread in when the target is run */
	  bfd_close (sym_bfd);
	}
    }
}



#ifdef QUICK_LOOK_UP

/* Code to handle quick lookup-tables follows. */


/* Some useful macros */
#define VALID_FILE(i)   ((i) < pxdb_header_p->fd_entries)
#define VALID_MODULE(i) ((i) < pxdb_header_p->md_entries)
#define VALID_PROC(i)   ((i) < pxdb_header_p->pd_entries)
#define VALID_CLASS(i)  ((i) < pxdb_header_p->cd_entries)

#define FILE_START(i)    (qFD[i].adrStart)
#define MODULE_START(i) (qMD[i].adrStart)
#define PROC_START(i)    (qPD[i].adrStart)

#define FILE_END(i)   (qFD[i].adrEnd)
#define MODULE_END(i) (qMD[i].adrEnd)
#define PROC_END(i)   (qPD[i].adrEnd)

#define FILE_ISYM(i)   (qFD[i].isym)
#define MODULE_ISYM(i) (qMD[i].isym)
#define PROC_ISYM(i)   (qPD[i].isym)

#define VALID_CURR_FILE    (curr_fd < pxdb_header_p->fd_entries)
#define VALID_CURR_MODULE  (curr_md < pxdb_header_p->md_entries)
#define VALID_CURR_PROC    (curr_pd < pxdb_header_p->pd_entries)
#define VALID_CURR_CLASS   (curr_cd < pxdb_header_p->cd_entries)

#define CURR_FILE_START     (qFD[curr_fd].adrStart)
#define CURR_MODULE_START   (qMD[curr_md].adrStart)
#define CURR_PROC_START     (qPD[curr_pd].adrStart)

#define CURR_FILE_END    (qFD[curr_fd].adrEnd)
#define CURR_MODULE_END  (qMD[curr_md].adrEnd)
#define CURR_PROC_END    (qPD[curr_pd].adrEnd)

#define CURR_FILE_ISYM    (qFD[curr_fd].isym)
#define CURR_MODULE_ISYM  (qMD[curr_md].isym)
#define CURR_PROC_ISYM    (qPD[curr_pd].isym)

#define TELL_OBJFILE                                      \
            do {                                          \
               if( !told_objfile ) {                      \
                   told_objfile = 1;                      \
                   warning ("\nIn object file \"%s\":\n", \
                            objfile->name);               \
               }                                          \
            } while (0)



/* Keeping track of the start/end symbol table (LNTT) indices of
   psymtabs created so far */

typedef struct
{
  int start;
  int end;
}
pst_syms_struct;

static pst_syms_struct *pst_syms_array = 0;

static pst_syms_count = 0;
static pst_syms_size = 0;

/* used by the TELL_OBJFILE macro */
static boolean told_objfile = 0;

/* Set up psymtab symbol index stuff */
static void
init_pst_syms ()
{
  pst_syms_count = 0;
  pst_syms_size = 20;
  pst_syms_array = (pst_syms_struct *) xmalloc (20 * sizeof (pst_syms_struct));
}

/* Clean up psymtab symbol index stuff */
static void
clear_pst_syms ()
{
  pst_syms_count = 0;
  pst_syms_size = 0;
  free (pst_syms_array);
  pst_syms_array = 0;
}

/* Add information about latest psymtab to symbol index table */
static void
record_pst_syms (start_sym, end_sym)
     int start_sym;
     int end_sym;
{
  if (++pst_syms_count > pst_syms_size)
    {
      pst_syms_array = (pst_syms_struct *) xrealloc (pst_syms_array,
			      2 * pst_syms_size * sizeof (pst_syms_struct));
      pst_syms_size *= 2;
    }
  pst_syms_array[pst_syms_count - 1].start = start_sym;
  pst_syms_array[pst_syms_count - 1].end = end_sym;
}

/* Find a suitable symbol table index which can serve as the upper
   bound of a psymtab that starts at INDEX

   This scans backwards in the psymtab symbol index table to find a
   "hole" in which the given index can fit.  This is a heuristic!!
   We don't search the entire table to check for multiple holes,
   we don't care about overlaps, etc. 

   Return 0 => not found */
static int
find_next_pst_start (index)
     int index;
{
  int i;

  for (i = pst_syms_count - 1; i >= 0; i--)
    if (pst_syms_array[i].end <= index)
      return (i == pst_syms_count - 1) ? 0 : pst_syms_array[i + 1].start - 1;

  if (pst_syms_array[0].start > index)
    return pst_syms_array[0].start - 1;

  return 0;
}



/* Utility functions to find the ending symbol index for a psymtab */

/* Find the next file entry that begins beyond INDEX, and return
   its starting symbol index - 1.
   QFD is the file table, CURR_FD is the file entry from where to start,
   PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work).

   Return 0 => not found */
static int
find_next_file_isym (index, qFD, curr_fd, pxdb_header_p)
     int index;
     quick_file_entry *qFD;
     int curr_fd;
     PXDB_header_ptr pxdb_header_p;
{
  while (VALID_CURR_FILE)
    {
      if (CURR_FILE_ISYM >= index)
	return CURR_FILE_ISYM - 1;
      curr_fd++;
    }
  return 0;
}

/* Find the next procedure entry that begins beyond INDEX, and return
   its starting symbol index - 1.
   QPD is the procedure table, CURR_PD is the proc entry from where to start,
   PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work).

   Return 0 => not found */
static int
find_next_proc_isym (index, qPD, curr_pd, pxdb_header_p)
     int index;
     quick_procedure_entry *qPD;
     int curr_pd;
     PXDB_header_ptr pxdb_header_p;
{
  while (VALID_CURR_PROC)
    {
      if (CURR_PROC_ISYM >= index)
	return CURR_PROC_ISYM - 1;
      curr_pd++;
    }
  return 0;
}

/* Find the next module entry that begins beyond INDEX, and return
   its starting symbol index - 1.
   QMD is the module table, CURR_MD is the modue entry from where to start,
   PXDB_HEADER_P as in hpread_quick_traverse (to allow macros to work).

   Return 0 => not found */
static int
find_next_module_isym (index, qMD, curr_md, pxdb_header_p)
     int index;
     quick_module_entry *qMD;
     int curr_md;
     PXDB_header_ptr pxdb_header_p;
{
  while (VALID_CURR_MODULE)
    {
      if (CURR_MODULE_ISYM >= index)
	return CURR_MODULE_ISYM - 1;
      curr_md++;
    }
  return 0;
}

/* Scan and record partial symbols for all functions starting from index
   pointed to by CURR_PD_P, and between code addresses START_ADR and END_ADR.
   Other parameters are explained in comments below. */

/* This used to be inline in hpread_quick_traverse, but now that we do essentially the
   same thing for two different cases (modules and module-less files), it's better
   organized in a separate routine, although it does take lots of arguments. pai/1997-10-08 */

static int
scan_procs (curr_pd_p, qPD, max_procs, start_adr, end_adr, pst, vt_bits, objfile, section_offsets)
     int *curr_pd_p;		/* pointer to current proc index */
     quick_procedure_entry *qPD;	/* the procedure quick lookup table */
     int max_procs;		/* number of entries in proc. table */
     CORE_ADDR start_adr;	/* beginning of code range for current psymtab */
     CORE_ADDR end_adr;		/* end of code range for current psymtab */
     struct partial_symtab *pst;	/* current psymtab */
     char *vt_bits;		/* strings table of SOM debug space */
     struct objfile *objfile;	/* current object file */
     struct section_offsets *section_offsets;	/* not really used for HP-UX currently */
{
  union dnttentry *dn_bufp;
  int symbol_count = 0;		/* Total number of symbols in this psymtab */
  int curr_pd = *curr_pd_p;	/* Convenience variable -- avoid dereferencing pointer all the time */

#ifdef DUMPING
  /* Turn this on for lots of debugging information in this routine */
  static int dumping = 0;
#endif

#ifdef DUMPING
  if (dumping)
    {
      printf ("Scan_procs called, addresses %x to %x, proc %x\n", start_adr, end_adr, curr_pd);
    }
#endif

  while ((CURR_PROC_START <= end_adr) && (curr_pd < max_procs))
    {

      char *rtn_name;		/* mangled name */
      char *rtn_dem_name;	/* qualified demangled name */
      char *class_name;
      int class;

      if ((trans_lang ((enum hp_language) qPD[curr_pd].language) == language_cplus) &&
	  vt_bits[(long) qPD[curr_pd].sbAlias])		/* not a null string */
	{
	  /* Get mangled name for the procedure, and demangle it */
	  rtn_name = &vt_bits[(long) qPD[curr_pd].sbAlias];
	  rtn_dem_name = cplus_demangle (rtn_name, DMGL_ANSI | DMGL_PARAMS);
	}
      else
	{
	  rtn_name = &vt_bits[(long) qPD[curr_pd].sbProc];
	  rtn_dem_name = NULL;
	}

      /* Hack to get around HP C/C++ compilers' insistence on providing
         "_MAIN_" as an alternate name for "main" */
      if ((strcmp (rtn_name, "_MAIN_") == 0) &&
	  (strcmp (&vt_bits[(long) qPD[curr_pd].sbProc], "main") == 0))
	rtn_dem_name = rtn_name = main_string;

#ifdef DUMPING
      if (dumping)
	{
	  printf ("..add %s (demangled %s), index %x to this psymtab\n", rtn_name, rtn_dem_name, curr_pd);
	}
#endif

      /* Check for module-spanning routines. */
      if (CURR_PROC_END > end_adr)
	{
	  TELL_OBJFILE;
	  warning ("Procedure \"%s\" [0x%x] spans file or module boundaries.", rtn_name, curr_pd);
	}

      /* Add this routine symbol to the list in the objfile. 
         Unfortunately we have to go to the LNTT to determine the
         correct list to put it on. An alternative (which the
         code used to do) would be to not check and always throw
         it on the "static" list. But if we go that route, then
         symbol_lookup() needs to be tweaked a bit to account
         for the fact that the function might not be found on
         the correct list in the psymtab. - RT */
      dn_bufp = hpread_get_lntt (qPD[curr_pd].isym, objfile);
      if (dn_bufp->dfunc.global)
	add_psymbol_with_dem_name_to_list (rtn_name,
					   strlen (rtn_name),
					   rtn_dem_name,
					   strlen (rtn_dem_name),
					   VAR_NAMESPACE,
					   LOC_BLOCK,	/* "I am a routine"        */
					   &objfile->global_psymbols,
					   (qPD[curr_pd].adrStart +	/* Starting address of rtn */
				 ANOFFSET (section_offsets, SECT_OFF_TEXT)),
					   0,	/* core addr?? */
		      trans_lang ((enum hp_language) qPD[curr_pd].language),
					   objfile);
      else
	add_psymbol_with_dem_name_to_list (rtn_name,
					   strlen (rtn_name),
					   rtn_dem_name,
					   strlen (rtn_dem_name),
					   VAR_NAMESPACE,
					   LOC_BLOCK,	/* "I am a routine"        */
					   &objfile->static_psymbols,
					   (qPD[curr_pd].adrStart +	/* Starting address of rtn */
				 ANOFFSET (section_offsets, SECT_OFF_TEXT)),
					   0,	/* core addr?? */
		      trans_lang ((enum hp_language) qPD[curr_pd].language),
					   objfile);

      symbol_count++;
      *curr_pd_p = ++curr_pd;	/* bump up count & reflect in caller */
    }				/* loop over procedures */

#ifdef DUMPING
  if (dumping)
    {
      if (symbol_count == 0)
	printf ("Scan_procs: no symbols found!\n");
    }
#endif

  return symbol_count;
}


/* Traverse the quick look-up tables, building a set of psymtabs.

   This constructs a psymtab for modules and files in the quick lookup
   tables.

   Mostly, modules correspond to compilation units, so we try to
   create psymtabs that correspond to modules; however, in some cases
   a file can result in a compiled object which does not have a module
   entry for it, so in such cases we create a psymtab for the file.  */

int
hpread_quick_traverse (objfile, section_offsets, gntt_bits, vt_bits, pxdb_header_p)
     struct objfile *objfile;	/* The object file descriptor */
     struct section_offsets *section_offsets;	/* ?? Null for HP */
     char *gntt_bits;		/* GNTT entries, loaded in from the file */
     char *vt_bits;		/* VT (string) entries ditto. */
     PXDB_header_ptr pxdb_header_p;	/* Pointer to pxdb header ditto */
{
  struct partial_symtab *pst;

  char *addr;

  quick_procedure_entry *qPD;
  quick_file_entry *qFD;
  quick_module_entry *qMD;
  quick_class_entry *qCD;

  int idx;
  int i;
  CORE_ADDR start_adr;		/* current psymtab's starting code addr   */
  CORE_ADDR end_adr;		/* current psymtab's ending code addr     */
  CORE_ADDR next_mod_adr;	/* next module's starting code addr    */
  int curr_pd;			/* current procedure */
  int curr_fd;			/* current file      */
  int curr_md;			/* current module    */
  int start_sym;		/* current psymtab's starting symbol index */
  int end_sym;			/* current psymtab's ending symbol index   */
  int max_LNTT_sym_index;
  int syms_in_pst;
  B_TYPE *class_entered;

  struct partial_symbol **global_syms;	/* We'll be filling in the "global"   */
  struct partial_symbol **static_syms;	/* and "static" tables in the objfile
					   as we go, so we need a pair of     
					   current pointers. */

#ifdef DUMPING
  /* Turn this on for lots of debugging information in this routine.
     You get a blow-by-blow account of quick lookup table reading */
  static int dumping = 0;
#endif

  pst = (struct partial_symtab *) 0;

  /* Clear out some globals */
  init_pst_syms ();
  told_objfile = 0;

  /* Demangling style -- if EDG style already set, don't change it,
     as HP style causes some problems with the KAI EDG compiler */
  if (current_demangling_style != edg_demangling)
    {
      /* Otherwise, ensure that we are using HP style demangling */
      set_demangling_style (HP_DEMANGLING_STYLE_STRING);
    }

  /* First we need to find the starting points of the quick
     look-up tables in the GNTT. */

  addr = gntt_bits;

  qPD = (quick_procedure_entry_ptr) addr;
  addr += pxdb_header_p->pd_entries * sizeof (quick_procedure_entry);

#ifdef DUMPING
  if (dumping)
    {
      printf ("\n Printing routines as we see them\n");
      for (i = 0; VALID_PROC (i); i++)
	{
	  idx = (long) qPD[i].sbProc;
	  printf ("%s %x..%x\n", &vt_bits[idx],
		  (int) PROC_START (i),
		  (int) PROC_END (i));
	}
    }
#endif

  qFD = (quick_file_entry_ptr) addr;
  addr += pxdb_header_p->fd_entries * sizeof (quick_file_entry);

#ifdef DUMPING
  if (dumping)
    {
      printf ("\n Printing files as we see them\n");
      for (i = 0; VALID_FILE (i); i++)
	{
	  idx = (long) qFD[i].sbFile;
	  printf ("%s %x..%x\n", &vt_bits[idx],
		  (int) FILE_START (i),
		  (int) FILE_END (i));
	}
    }
#endif

  qMD = (quick_module_entry_ptr) addr;
  addr += pxdb_header_p->md_entries * sizeof (quick_module_entry);

#ifdef DUMPING
  if (dumping)
    {
      printf ("\n Printing modules as we see them\n");
      for (i = 0; i < pxdb_header_p->md_entries; i++)
	{
	  idx = (long) qMD[i].sbMod;
	  printf ("%s\n", &vt_bits[idx]);
	}
    }
#endif

  qCD = (quick_class_entry_ptr) addr;
  addr += pxdb_header_p->cd_entries * sizeof (quick_class_entry);

#ifdef DUMPING
  if (dumping)
    {
      printf ("\n Printing classes as we see them\n");
      for (i = 0; VALID_CLASS (i); i++)
	{
	  idx = (long) qCD[i].sbClass;
	  printf ("%s\n", &vt_bits[idx]);
	}

      printf ("\n Done with dump, on to build!\n");
    }
#endif

  /* We need this index only while hp-symtab-read.c expects
     a byte offset to the end of the LNTT entries for a given
     psymtab.  Thus the need for it should go away someday.

     When it goes away, then we won't have any need to load the
     LNTT from the objfile at psymtab-time, and start-up will be
     faster.  To make that work, we'll need some way to create
     a null pst for the "globals" pseudo-module. */
  max_LNTT_sym_index = LNTT_SYMCOUNT (objfile);

  /* Scan the module descriptors and make a psymtab for each.

     We know the MDs, FDs and the PDs are in order by starting
     address.  We use that fact to traverse all three arrays in
     parallel, knowing when the next PD is in a new file
     and we need to create a new psymtab. */
  curr_pd = 0;			/* Current procedure entry */
  curr_fd = 0;			/* Current file entry */
  curr_md = 0;			/* Current module entry */

  start_adr = 0;		/* Current psymtab code range */
  end_adr = 0;

  start_sym = 0;		/* Current psymtab symbol range */
  end_sym = 0;

  syms_in_pst = 0;		/* Symbol count for psymtab */

  /* Psts actually just have pointers into the objfile's
     symbol table, not their own symbol tables. */
  global_syms = objfile->global_psymbols.list;
  static_syms = objfile->static_psymbols.list;


  /* First skip over pseudo-entries with address 0.  These represent inlined
     routines and abstract (uninstantiated) template routines.
     FIXME: These should be read in and available -- even if we can't set
     breakpoints, etc., there's some information that can be presented
     to the user. pai/1997-10-08  */

  while (VALID_CURR_PROC && (CURR_PROC_START == 0))
    curr_pd++;

  /* Loop over files, modules, and procedures in code address order. Each
     time we enter an iteration of this loop, curr_pd points to the first
     unprocessed procedure, curr_fd points to the first unprocessed file, and
     curr_md to the first unprocessed module.  Each iteration of this loop
     updates these as required -- any or all of them may be bumpd up
     each time around.  When we exit this loop, we are done with all files
     and modules in the tables -- there may still be some procedures, however.

     Note: This code used to loop only over module entries, under the assumption
     that files can occur via inclusions and are thus unreliable, while a
     compiled object always corresponds to a module.  With CTTI in the HP aCC
     compiler, it turns out that compiled objects may have only files and no
     modules; so we have to loop over files and modules, creating psymtabs for
     either as appropriate.  Unfortunately there are some problems (notably:
     1. the lack of "SRC_FILE_END" entries in the LNTT, 2. the lack of pointers
     to the ending symbol indices of a module or a file) which make it quite hard
     to do this correctly.  Currently it uses a bunch of heuristics to start and
     end psymtabs; they seem to work well with most objects generated by aCC, but
     who knows when that will change...   */

  while (VALID_CURR_FILE || VALID_CURR_MODULE)
    {

      char *mod_name_string;
      char *full_name_string;

      /* First check for modules like "version.c", which have no code
         in them but still have qMD entries.  They also have no qFD or
         qPD entries.  Their start address is -1 and their end address
         is 0.  */
      if (VALID_CURR_MODULE && (CURR_MODULE_START == -1) && (CURR_MODULE_END == 0))
	{

	  mod_name_string = &vt_bits[(long) qMD[curr_md].sbMod];

#ifdef DUMPING
	  if (dumping)
	    printf ("Module with data only %s\n", mod_name_string);
#endif

	  /* We'll skip the rest (it makes error-checking easier), and
	     just make an empty pst.  Right now empty psts are not put
	     in the pst chain, so all this is for naught, but later it
	     might help.  */

	  pst = hpread_start_psymtab (objfile,
				      section_offsets,	/* ?? */
				      mod_name_string,
				      CURR_MODULE_START,	/* Low text address: bogus! */
		       (CURR_MODULE_ISYM * sizeof (struct dntt_type_block)),
	  /* ldsymoff */
				      global_syms,
				      static_syms);

	  pst = hpread_end_psymtab (pst,
				    NULL,	/* psymtab_include_list */
				    0,	/* includes_used        */
				  end_sym * sizeof (struct dntt_type_block),
	  /* byte index in LNTT of end 
	     = capping symbol offset  
	     = LDSYMOFF of nextfile */
				    0,	/* text high            */
				    NULL,	/* dependency_list      */
				    0);		/* dependencies_used    */

	  global_syms = objfile->global_psymbols.next;
	  static_syms = objfile->static_psymbols.next;

	  curr_md++;
	}
      else if (VALID_CURR_MODULE &&
	       ((CURR_MODULE_START == 0) || (CURR_MODULE_START == -1) ||
		(CURR_MODULE_END == 0) || (CURR_MODULE_END == -1)))
	{
	  TELL_OBJFILE;
	  warning ("Module \"%s\" [0x%x] has non-standard addresses.  It starts at 0x%x, ends at 0x%x, and will be skipped.",
		   mod_name_string, curr_md, start_adr, end_adr);
	  /* On to next module */
	  curr_md++;
	}
      else
	{
	  /* First check if we are looking at a file with code in it
	     that does not overlap the current module's code range */

	  if (VALID_CURR_FILE ? (VALID_CURR_MODULE ? (CURR_FILE_END < CURR_MODULE_START) : 1) : 0)
	    {

	      /* Looking at file not corresponding to any module,
	         create a psymtab for it */
	      full_name_string = &vt_bits[(long) qFD[curr_fd].sbFile];
	      start_adr = CURR_FILE_START;
	      end_adr = CURR_FILE_END;
	      start_sym = CURR_FILE_ISYM;

	      /* Check if there are any procedures not handled until now, that
	         begin before the start address of this file, and if so, adjust
	         this module's start address to include them.  This handles routines that
	         are in between file or module ranges for some reason (probably
	         indicates a compiler bug */

	      if (CURR_PROC_START < start_adr)
		{
		  TELL_OBJFILE;
		  warning ("Found procedure \"%s\" [0x%x] that is not in any file or module.",
			   &vt_bits[(long) qPD[curr_pd].sbProc], curr_pd);
		  start_adr = CURR_PROC_START;
		  if (CURR_PROC_ISYM < start_sym)
		    start_sym = CURR_PROC_ISYM;
		}

	      /* Sometimes (compiler bug -- COBOL) the module end address is higher
	         than the start address of the next module, so check for that and
	         adjust accordingly */

	      if (VALID_FILE (curr_fd + 1) && (FILE_START (curr_fd + 1) <= end_adr))
		{
		  TELL_OBJFILE;
		  warning ("File \"%s\" [0x%x] has ending address after starting address of next file; adjusting ending address down.",
			   full_name_string, curr_fd);
		  end_adr = FILE_START (curr_fd + 1) - 1;	/* Is -4 (or -8 for 64-bit) better? */
		}
	      if (VALID_MODULE (curr_md) && (CURR_MODULE_START <= end_adr))
		{
		  TELL_OBJFILE;
		  warning ("File \"%s\" [0x%x] has ending address after starting address of next module; adjusting ending address down.",
			   full_name_string, curr_fd);
		  end_adr = CURR_MODULE_START - 1;	/* Is -4 (or -8 for 64-bit) better? */
		}


#ifdef DUMPING
	      if (dumping)
		{
		  printf ("Make new psymtab for file %s (%x to %x).\n",
			  full_name_string, start_adr, end_adr);
		}
#endif
	      /* Create the basic psymtab, connecting it in the list
	         for this objfile and pointing its symbol entries
	         to the current end of the symbol areas in the objfile.

	         The "ldsymoff" parameter is the byte offset in the LNTT
	         of the first symbol in this file.  Some day we should
	         turn this into an index (fix in hp-symtab-read.c as well).
	         And it's not even the right byte offset, as we're using
	         the size of a union! FIXME!  */
	      pst = hpread_start_psymtab (objfile,
					  section_offsets,	/* ?? */
					  full_name_string,
					  start_adr,	/* Low text address */
			      (start_sym * sizeof (struct dntt_type_block)),
	      /* ldsymoff */
					  global_syms,
					  static_syms);

	      /* Set up to only enter each class referenced in this module once.  */
	      class_entered = malloc (B_BYTES (pxdb_header_p->cd_entries));
	      B_CLRALL (class_entered, pxdb_header_p->cd_entries);

	      /* Scan the procedure descriptors for procedures in the current
	         file, based on the starting addresses. */

	      syms_in_pst = scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries,
					start_adr, end_adr,
				    pst, vt_bits, objfile, section_offsets);

	      /* Get ending symbol offset */

	      end_sym = 0;
	      /* First check for starting index before previous psymtab */
	      if (pst_syms_count && start_sym < pst_syms_array[pst_syms_count - 1].end)
		{
		  end_sym = find_next_pst_start (start_sym);
		}
	      /* Look for next start index of a file or module, or procedure */
	      if (!end_sym)
		{
		  int next_file_isym = find_next_file_isym (start_sym, qFD, curr_fd + 1, pxdb_header_p);
		  int next_module_isym = find_next_module_isym (start_sym, qMD, curr_md, pxdb_header_p);
		  int next_proc_isym = find_next_proc_isym (start_sym, qPD, curr_pd, pxdb_header_p);

		  if (next_file_isym && next_module_isym)
		    {
		      /* pick lower of next file or module start index */
		      end_sym = min (next_file_isym, next_module_isym);
		    }
		  else
		    {
		      /* one of them is zero, pick the other */
		      end_sym = max (next_file_isym, next_module_isym);
		    }

		  /* As a precaution, check next procedure index too */
		  if (!end_sym)
		    end_sym = next_proc_isym;
		  else
		    end_sym = min (end_sym, next_proc_isym);
		}

	      /* Couldn't find procedure, file, or module, use globals as default */
	      if (!end_sym)
		end_sym = pxdb_header_p->globals;

#ifdef DUMPING
	      if (dumping)
		{
		  printf ("File psymtab indices: %x to %x\n", start_sym, end_sym);
		}
#endif

	      pst = hpread_end_psymtab (pst,
					NULL,	/* psymtab_include_list */
					0,	/* includes_used        */
				  end_sym * sizeof (struct dntt_type_block),
	      /* byte index in LNTT of end 
	         = capping symbol offset   
	         = LDSYMOFF of nextfile */
					end_adr,	/* text high */
					NULL,	/* dependency_list */
					0);	/* dependencies_used */

	      record_pst_syms (start_sym, end_sym);

	      if (NULL == pst)
		warning ("No symbols in psymtab for file \"%s\" [0x%x].", full_name_string, curr_fd);

#ifdef DUMPING
	      if (dumping)
		{
		  printf ("Made new psymtab for file %s (%x to %x), sym %x to %x.\n",
			  full_name_string, start_adr, end_adr, CURR_FILE_ISYM, end_sym);
		}
#endif
	      /* Prepare for the next psymtab. */
	      global_syms = objfile->global_psymbols.next;
	      static_syms = objfile->static_psymbols.next;
	      free (class_entered);

	      curr_fd++;
	    }			/* Psymtab for file */
	  else
	    {
	      /* We have a module for which we create a psymtab */

	      mod_name_string = &vt_bits[(long) qMD[curr_md].sbMod];

	      /* We will include the code ranges of any files that happen to
	         overlap with this module */

	      /* So, first pick the lower of the file's and module's start addresses */
	      start_adr = CURR_MODULE_START;
	      if (VALID_CURR_FILE)
		{
		  if (CURR_FILE_START < CURR_MODULE_START)
		    {
		      TELL_OBJFILE;
		      warning ("File \"%s\" [0x%x] crosses beginning of module \"%s\".",
			       &vt_bits[(long) qFD[curr_fd].sbFile],
			       curr_fd, mod_name_string);

		      start_adr = CURR_FILE_START;
		    }
		}

	      /* Also pick the lower of the file's and the module's start symbol indices */
	      start_sym = CURR_MODULE_ISYM;
	      if (VALID_CURR_FILE && (CURR_FILE_ISYM < CURR_MODULE_ISYM))
		start_sym = CURR_FILE_ISYM;

	      /* For the end address, we scan through the files till we find one
	         that overlaps the current module but ends beyond it; if no such file exists we
	         simply use the module's start address.  
	         (Note, if file entries themselves overlap
	         we take the longest overlapping extension beyond the end of the module...)
	         We assume that modules never overlap. */

	      end_adr = CURR_MODULE_END;

	      if (VALID_CURR_FILE)
		{
		  while (VALID_CURR_FILE && (CURR_FILE_START < end_adr))
		    {

#ifdef DUMPING
		      if (dumping)
			printf ("Maybe skipping file %s which overlaps with module %s\n",
				&vt_bits[(long) qFD[curr_fd].sbFile], mod_name_string);
#endif
		      if (CURR_FILE_END > end_adr)
			{
			  TELL_OBJFILE;
			  warning ("File \"%s\" [0x%x] crosses end of module \"%s\".",
				   &vt_bits[(long) qFD[curr_fd].sbFile],
				   curr_fd, mod_name_string);
			  end_adr = CURR_FILE_END;
			}
		      curr_fd++;
		    }
		  curr_fd--;	/* back up after going too far */
		}

	      /* Sometimes (compiler bug -- COBOL) the module end address is higher
	         than the start address of the next module, so check for that and
	         adjust accordingly */

	      if (VALID_MODULE (curr_md + 1) && (MODULE_START (curr_md + 1) <= end_adr))
		{
		  TELL_OBJFILE;
		  warning ("Module \"%s\" [0x%x] has ending address after starting address of next module; adjusting ending address down.",
			   mod_name_string, curr_md);
		  end_adr = MODULE_START (curr_md + 1) - 1;	/* Is -4 (or -8 for 64-bit) better? */
		}
	      if (VALID_FILE (curr_fd + 1) && (FILE_START (curr_fd + 1) <= end_adr))
		{
		  TELL_OBJFILE;
		  warning ("Module \"%s\" [0x%x] has ending address after starting address of next file; adjusting ending address down.",
			   mod_name_string, curr_md);
		  end_adr = FILE_START (curr_fd + 1) - 1;	/* Is -4 (or -8 for 64-bit) better? */
		}

	      /* Use one file to get the full name for the module.  This
	         situation can arise if there is executable code in a #include
	         file.  Each file with code in it gets a qFD.  Files which don't
	         contribute code don't get a qFD, even if they include files
	         which do, e.g.: 

	         body.c:                    rtn.h:
	         int x;                     int main() {
	         #include "rtn.h"               return x;
	         }

	         There will a qFD for "rtn.h",and a qMD for "body.c",
	         but no qMD for "rtn.h" or qFD for "body.c"!

	         We pick the name of the last file to overlap with this
	         module.  C convention is to put include files first.  In a
	         perfect world, we could check names and use the file whose full
	         path name ends with the module name. */

	      if (VALID_CURR_FILE)
		full_name_string = &vt_bits[(long) qFD[curr_fd].sbFile];
	      else
		full_name_string = mod_name_string;

	      /* Check if there are any procedures not handled until now, that
	         begin before the start address we have now, and if so, adjust
	         this psymtab's start address to include them.  This handles routines that
	         are in between file or module ranges for some reason (probably
	         indicates a compiler bug */

	      if (CURR_PROC_START < start_adr)
		{
		  TELL_OBJFILE;
		  warning ("Found procedure \"%s\" [0x%x] that is not in any file or module.",
			   &vt_bits[(long) qPD[curr_pd].sbProc], curr_pd);
		  start_adr = CURR_PROC_START;
		  if (CURR_PROC_ISYM < start_sym)
		    start_sym = CURR_PROC_ISYM;
		}

#ifdef DUMPING
	      if (dumping)
		{
		  printf ("Make new psymtab for module %s (%x to %x), using file %s\n",
		     mod_name_string, start_adr, end_adr, full_name_string);
		}
#endif
	      /* Create the basic psymtab, connecting it in the list
	         for this objfile and pointing its symbol entries
	         to the current end of the symbol areas in the objfile.

	         The "ldsymoff" parameter is the byte offset in the LNTT
	         of the first symbol in this file.  Some day we should
	         turn this into an index (fix in hp-symtab-read.c as well).
	         And it's not even the right byte offset, as we're using
	         the size of a union! FIXME!  */
	      pst = hpread_start_psymtab (objfile,
					  section_offsets,	/* ?? */
					  full_name_string,
					  start_adr,	/* Low text address */
			      (start_sym * sizeof (struct dntt_type_block)),
	      /* ldsymoff */
					  global_syms,
					  static_syms);

	      /* Set up to only enter each class referenced in this module once.  */
	      class_entered = malloc (B_BYTES (pxdb_header_p->cd_entries));
	      B_CLRALL (class_entered, pxdb_header_p->cd_entries);

	      /* Scan the procedure descriptors for procedures in the current
	         module, based on the starting addresses. */

	      syms_in_pst = scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries,
					start_adr, end_adr,
				    pst, vt_bits, objfile, section_offsets);

	      /* Get ending symbol offset */

	      end_sym = 0;
	      /* First check for starting index before previous psymtab */
	      if (pst_syms_count && start_sym < pst_syms_array[pst_syms_count - 1].end)
		{
		  end_sym = find_next_pst_start (start_sym);
		}
	      /* Look for next start index of a file or module, or procedure */
	      if (!end_sym)
		{
		  int next_file_isym = find_next_file_isym (start_sym, qFD, curr_fd + 1, pxdb_header_p);
		  int next_module_isym = find_next_module_isym (start_sym, qMD, curr_md + 1, pxdb_header_p);
		  int next_proc_isym = find_next_proc_isym (start_sym, qPD, curr_pd, pxdb_header_p);

		  if (next_file_isym && next_module_isym)
		    {
		      /* pick lower of next file or module start index */
		      end_sym = min (next_file_isym, next_module_isym);
		    }
		  else
		    {
		      /* one of them is zero, pick the other */
		      end_sym = max (next_file_isym, next_module_isym);
		    }

		  /* As a precaution, check next procedure index too */
		  if (!end_sym)
		    end_sym = next_proc_isym;
		  else
		    end_sym = min (end_sym, next_proc_isym);
		}

	      /* Couldn't find procedure, file, or module, use globals as default */
	      if (!end_sym)
		end_sym = pxdb_header_p->globals;

#ifdef DUMPING
	      if (dumping)
		{
		  printf ("Module psymtab indices: %x to %x\n", start_sym, end_sym);
		}
#endif

	      pst = hpread_end_psymtab (pst,
					NULL,	/* psymtab_include_list */
					0,	/* includes_used        */
				  end_sym * sizeof (struct dntt_type_block),
	      /* byte index in LNTT of end 
	         = capping symbol offset   
	         = LDSYMOFF of nextfile */
					end_adr,	/* text high */
					NULL,	/* dependency_list      */
					0);	/* dependencies_used    */

	      record_pst_syms (start_sym, end_sym);

	      if (NULL == pst)
		warning ("No symbols in psymtab for module \"%s\" [0x%x].", mod_name_string, curr_md);

#ifdef DUMPING
	      if (dumping)
		{
		  printf ("Made new psymtab for module %s (%x to %x), sym %x to %x.\n",
			  mod_name_string, start_adr, end_adr, CURR_MODULE_ISYM, end_sym);
		}
#endif

	      /* Prepare for the next psymtab. */
	      global_syms = objfile->global_psymbols.next;
	      static_syms = objfile->static_psymbols.next;
	      free (class_entered);

	      curr_md++;
	      curr_fd++;
	    }			/* psymtab for module */
	}			/* psymtab for non-bogus file or module */
    }				/* End of while loop over all files & modules */

  /* There may be some routines after all files and modules -- these will get
     inserted in a separate new module of their own */
  if (VALID_CURR_PROC)
    {
      start_adr = CURR_PROC_START;
      end_adr = qPD[pxdb_header_p->pd_entries - 1].adrEnd;
      TELL_OBJFILE;
      warning ("Found functions beyond end of all files and modules [0x%x].", curr_pd);
#ifdef DUMPING
      if (dumping)
	{
	  printf ("Orphan functions at end, PD %d and beyond (%x to %x)\n",
		  curr_pd, start_adr, end_adr);
	}
#endif
      pst = hpread_start_psymtab (objfile,
				  section_offsets,	/* ?? */
				  "orphans",
				  start_adr,	/* Low text address */
			 (CURR_PROC_ISYM * sizeof (struct dntt_type_block)),
      /* ldsymoff */
				  global_syms,
				  static_syms);

      scan_procs (&curr_pd, qPD, pxdb_header_p->pd_entries,
		  start_adr, end_adr,
		  pst, vt_bits, objfile, section_offsets);

      pst = hpread_end_psymtab (pst,
				NULL,	/* psymtab_include_list */
				0,	/* includes_used */
		   pxdb_header_p->globals * sizeof (struct dntt_type_block),
      /* byte index in LNTT of end 
         = capping symbol offset   
         = LDSYMOFF of nextfile */
				end_adr,	/* text high  */
				NULL,	/* dependency_list */
				0);	/* dependencies_used */
    }


#ifdef NEVER_NEVER
  /* Now build psts for non-module things (in the tail of
     the LNTT, after the last END MODULE entry).

     If null psts were kept on the chain, this would be
     a solution.  FIXME */
  pst = hpread_start_psymtab (objfile,
			      section_offsets,
			      "globals",
			      0,
			      (pxdb_header_p->globals
			       * sizeof (struct dntt_type_block)),
			      objfile->global_psymbols.next,
			      objfile->static_psymbols.next);
  hpread_end_psymtab (pst,
		      NULL, 0,
		      (max_LNTT_sym_index * sizeof (struct dntt_type_block)),
		      0,
		      NULL, 0);
#endif

  clear_pst_syms ();

  return 1;

}				/* End of hpread_quick_traverse. */


/* Get appropriate header, based on pxdb type. 
   Return value: 1 if ok, 0 if not */
int
hpread_get_header (objfile, pxdb_header_p)
     struct objfile *objfile;
     PXDB_header_ptr pxdb_header_p;
{
  asection *pinfo_section, *debug_section, *header_section;

#ifdef DUMPING
  /* Turn on for debugging information */
  static int dumping = 0;
#endif

  header_section = bfd_get_section_by_name (objfile->obfd, "$HEADER$");
  if (!header_section)
    {
      /* We don't have either PINFO or DEBUG sections.  But
         stuff like "libc.sl" has no debug info.  There's no
         need to warn the user of this, as it may be ok. The
         caller will figure it out and issue any needed
         messages. */
#ifdef DUMPING
      if (dumping)
	printf ("==No debug info at all for %s.\n", objfile->name);
#endif

      return 0;
    }

  /* We would like either a $DEBUG$ or $PINFO$ section.
     Once we know which, we can understand the header
     data (which we have defined to suit the more common
     $DEBUG$ case). */
  debug_section = bfd_get_section_by_name (objfile->obfd, "$DEBUG$");
  pinfo_section = bfd_get_section_by_name (objfile->obfd, "$PINFO$");
  if (debug_section)
    {
      /* The expected case: normal pxdb header. */
      bfd_get_section_contents (objfile->obfd, header_section,
				pxdb_header_p, 0, sizeof (PXDB_header));

      if (!pxdb_header_p->pxdbed)
	{
	  /* This shouldn't happen if we check in "symfile.c". */
	  return 0;
	}			/* DEBUG section */
    }

  else if (pinfo_section)
    {
      /* The DOC case; we need to translate this into a
         regular header. */
      DOC_info_PXDB_header doc_header;

#ifdef DUMPING
      if (dumping)
	{
	  printf ("==OOps, PINFO, let's try to handle this, %s.\n", objfile->name);
	}
#endif

      bfd_get_section_contents (objfile->obfd,
				header_section,
				&doc_header, 0,
				sizeof (DOC_info_PXDB_header));

      if (!doc_header.pxdbed)
	{
	  /* This shouldn't happen if we check in "symfile.c". */
	  warning ("File \"%s\" not processed by pxdb!", objfile->name);
	  return 0;
	}

      /* Copy relevent fields to standard header passed in. */
      pxdb_header_p->pd_entries = doc_header.pd_entries;
      pxdb_header_p->fd_entries = doc_header.fd_entries;
      pxdb_header_p->md_entries = doc_header.md_entries;
      pxdb_header_p->pxdbed = doc_header.pxdbed;
      pxdb_header_p->bighdr = doc_header.bighdr;
      pxdb_header_p->sa_header = doc_header.sa_header;
      pxdb_header_p->inlined = doc_header.inlined;
      pxdb_header_p->globals = doc_header.globals;
      pxdb_header_p->time = doc_header.time;
      pxdb_header_p->pg_entries = doc_header.pg_entries;
      pxdb_header_p->functions = doc_header.functions;
      pxdb_header_p->files = doc_header.files;
      pxdb_header_p->cd_entries = doc_header.cd_entries;
      pxdb_header_p->aa_entries = doc_header.aa_entries;
      pxdb_header_p->oi_entries = doc_header.oi_entries;
      pxdb_header_p->version = doc_header.version;
    }				/* PINFO section */

  else
    {
#ifdef DUMPING
      if (dumping)
	printf ("==No debug info at all for %s.\n", objfile->name);
#endif

      return 0;

    }

  return 1;
}				/* End of hpread_get_header */
#endif /* QUICK_LOOK_UP */


/* Initialization for reading native HP C debug symbols from OBJFILE.

   Its only purpose in life is to set up the symbol reader's private
   per-objfile data structures, and read in the raw contents of the debug
   sections (attaching pointers to the debug info into the private data
   structures).

   Since BFD doesn't know how to read debug symbols in a format-independent
   way (and may never do so...), we have to do it ourselves.  Note we may
   be called on a file without native HP C debugging symbols.

   FIXME, there should be a cleaner peephole into the BFD environment
   here. */
void
hpread_symfile_init (objfile)
     struct objfile *objfile;
{
  asection *vt_section, *slt_section, *lntt_section, *gntt_section;

  /* Allocate struct to keep track of the symfile */
  objfile->sym_private = (PTR)
    xmmalloc (objfile->md, sizeof (struct hpread_symfile_info));
  memset (objfile->sym_private, 0, sizeof (struct hpread_symfile_info));

  /* We haven't read in any types yet.  */
  TYPE_VECTOR (objfile) = 0;

  /* Read in data from the $GNTT$ subspace.  */
  gntt_section = bfd_get_section_by_name (objfile->obfd, "$GNTT$");
  if (!gntt_section)
    return;

  GNTT (objfile)
    = obstack_alloc (&objfile->symbol_obstack,
		     bfd_section_size (objfile->obfd, gntt_section));

  bfd_get_section_contents (objfile->obfd, gntt_section, GNTT (objfile),
			 0, bfd_section_size (objfile->obfd, gntt_section));

  GNTT_SYMCOUNT (objfile)
    = bfd_section_size (objfile->obfd, gntt_section)
    / sizeof (struct dntt_type_block);

  /* Read in data from the $LNTT$ subspace.   Also keep track of the number
     of LNTT symbols.

     FIXME: this could be moved into the psymtab-to-symtab expansion
     code, and save startup time.  At the moment this data is
     still used, though.  We'd need a way to tell hp-symtab-read.c
     whether or not to load the LNTT. */
  lntt_section = bfd_get_section_by_name (objfile->obfd, "$LNTT$");
  if (!lntt_section)
    return;

  LNTT (objfile)
    = obstack_alloc (&objfile->symbol_obstack,
		     bfd_section_size (objfile->obfd, lntt_section));

  bfd_get_section_contents (objfile->obfd, lntt_section, LNTT (objfile),
			 0, bfd_section_size (objfile->obfd, lntt_section));

  LNTT_SYMCOUNT (objfile)
    = bfd_section_size (objfile->obfd, lntt_section)
    / sizeof (struct dntt_type_block);

  /* Read in data from the $SLT$ subspace.  $SLT$ contains information
     on source line numbers.  */
  slt_section = bfd_get_section_by_name (objfile->obfd, "$SLT$");
  if (!slt_section)
    return;

  SLT (objfile) =
    obstack_alloc (&objfile->symbol_obstack,
		   bfd_section_size (objfile->obfd, slt_section));

  bfd_get_section_contents (objfile->obfd, slt_section, SLT (objfile),
			  0, bfd_section_size (objfile->obfd, slt_section));

  /* Read in data from the $VT$ subspace.  $VT$ contains things like
     names and constants.  Keep track of the number of symbols in the VT.  */
  vt_section = bfd_get_section_by_name (objfile->obfd, "$VT$");
  if (!vt_section)
    return;

  VT_SIZE (objfile) = bfd_section_size (objfile->obfd, vt_section);

  VT (objfile) =
    (char *) obstack_alloc (&objfile->symbol_obstack,
			    VT_SIZE (objfile));

  bfd_get_section_contents (objfile->obfd, vt_section, VT (objfile),
			    0, VT_SIZE (objfile));
}

/* Scan and build partial symbols for a symbol file.

   The minimal symbol table (either SOM or HP a.out) has already been
   read in; all we need to do is setup partial symbols based on the
   native debugging information.

   Note that the minimal table is produced by the linker, and has
   only global routines in it; the psymtab is based on compiler-
   generated debug information and has non-global
   routines in it as well as files and class information.

   We assume hpread_symfile_init has been called to initialize the
   symbol reader's private data structures.

   SECTION_OFFSETS contains offsets relative to which the symbols in the
   various sections are (depending where the sections were actually loaded).
   MAINLINE is true if we are reading the main symbol table (as
   opposed to a shared lib or dynamically loaded file). */
void
hpread_build_psymtabs (objfile, section_offsets, mainline)
     struct objfile *objfile;
     struct section_offsets *section_offsets;
     int mainline;
{

#ifdef DUMPING
  /* Turn this on to get debugging output. */
  static int dumping = 0;
#endif

  char *namestring;
  int past_first_source_file = 0;
  struct cleanup *old_chain;

  int hp_symnum, symcount, i;
  int scan_start = 0;

  union dnttentry *dn_bufp;
  unsigned long valu;
  char *p;
  int texthigh = 0;
  int have_name = 0;

  /* Current partial symtab */
  struct partial_symtab *pst;

  /* List of current psymtab's include files */
  char **psymtab_include_list;
  int includes_allocated;
  int includes_used;

  /* Index within current psymtab dependency list */
  struct partial_symtab **dependency_list;
  int dependencies_used, dependencies_allocated;

  /* Just in case the stabs reader left turds lying around.  */
  free_pending_blocks ();
  make_cleanup (really_free_pendings, 0);

  pst = (struct partial_symtab *) 0;

  /* We shouldn't use alloca, instead use malloc/free.  Doing so avoids
     a number of problems with cross compilation and creating useless holes
     in the stack when we have to allocate new entries.  FIXME.  */

  includes_allocated = 30;
  includes_used = 0;
  psymtab_include_list = (char **) alloca (includes_allocated *
					   sizeof (char *));

  dependencies_allocated = 30;
  dependencies_used = 0;
  dependency_list =
    (struct partial_symtab **) alloca (dependencies_allocated *
				       sizeof (struct partial_symtab *));

  old_chain = make_cleanup ((make_cleanup_func) free_objfile, objfile);

  last_source_file = 0;

#ifdef QUICK_LOOK_UP
  {
    /* Begin code for new-style loading of quick look-up tables. */

    /* elz: this checks whether the file has beeen processed by pxdb.
       If not we would like to try to read the psymbols in
       anyway, but it turns out to be not so easy. So this could 
       actually be commented out, but I leave it in, just in case
       we decide to add support for non-pxdb-ed stuff in the future. */
    PXDB_header pxdb_header;
    int found_modules_in_program;

    if (hpread_get_header (objfile, &pxdb_header))
      {
	/* Build a minimal table.  No types, no global variables,
	   no include files.... */
#ifdef DUMPING
	if (dumping)
	  printf ("\nNew method for %s\n", objfile->name);
#endif

	/* elz: quick_traverse returns true if it found
	   some modules in the main source file, other
	   than those in end.c
	   In C and C++, all the files have MODULES entries
	   in the LNTT, and the quick table traverse is all 
	   based on finding these MODULES entries. Without 
	   those it cannot work. 
	   It happens that F77 programs don't have MODULES
	   so the quick traverse gets confused. F90 programs
	   have modules, and the quick method still works.
	   So, if modules (other than those in end.c) are
	   not found we give up on the quick table stuff, 
	   and fall back on the slower method  */
	found_modules_in_program = hpread_quick_traverse (objfile,
							  section_offsets,
							  GNTT (objfile),
							  VT (objfile),
							  &pxdb_header);

	discard_cleanups (old_chain);

	/* Set up to scan the global section of the LNTT.

	   This field is not always correct: if there are
	   no globals, it will point to the last record in
	   the regular LNTT, which is usually an END MODULE.

	   Since it might happen that there could be a file
	   with just one global record, there's no way to
	   tell other than by looking at the record, so that's
	   done below. */
	if (found_modules_in_program)
	  scan_start = pxdb_header.globals;
      }
#ifdef DUMPING
    else
      {
	if (dumping)
	  printf ("\nGoing on to old method for %s\n", objfile->name);
      }
#endif
  }
#endif /* QUICK_LOOK_UP */

  /* Make two passes, one over the GNTT symbols, the other for the
     LNTT symbols.

     JB comment: above isn't true--they only make one pass, over
     the LNTT.  */
  for (i = 0; i < 1; i++)
    {
      int within_function = 0;

      if (i)
	symcount = GNTT_SYMCOUNT (objfile);
      else
	symcount = LNTT_SYMCOUNT (objfile);


      for (hp_symnum = scan_start; hp_symnum < symcount; hp_symnum++)
	{
	  QUIT;
	  if (i)
	    dn_bufp = hpread_get_gntt (hp_symnum, objfile);
	  else
	    dn_bufp = hpread_get_lntt (hp_symnum, objfile);

	  if (dn_bufp->dblock.extension)
	    continue;

	  /* Only handle things which are necessary for minimal symbols.
	     everything else is ignored.  */
	  switch (dn_bufp->dblock.kind)
	    {
	    case DNTT_TYPE_SRCFILE:
	      {
#ifdef QUICK_LOOK_UP
		if (scan_start == hp_symnum
		    && symcount == hp_symnum + 1)
		  {
		    /* If there are NO globals in an executable,
		       PXDB's index to the globals will point to
		       the last record in the file, which 
		       could be this record. (this happened for F77 libraries)
		       ignore it and be done! */
		    continue;
		  }
#endif /* QUICK_LOOK_UP */

		/* A source file of some kind.  Note this may simply
		   be an included file.  */
		SET_NAMESTRING (dn_bufp, &namestring, objfile);

		/* Check if this is the source file we are already working
		   with.  */
		if (pst && !strcmp (namestring, pst->filename))
		  continue;

		/* Check if this is an include file, if so check if we have
		   already seen it.  Add it to the include list */
		p = strrchr (namestring, '.');
		if (!strcmp (p, ".h"))
		  {
		    int j, found;

		    found = 0;
		    for (j = 0; j < includes_used; j++)
		      if (!strcmp (namestring, psymtab_include_list[j]))
			{
			  found = 1;
			  break;
			}
		    if (found)
		      continue;

		    /* Add it to the list of includes seen so far and
		       allocate more include space if necessary.  */
		    psymtab_include_list[includes_used++] = namestring;
		    if (includes_used >= includes_allocated)
		      {
			char **orig = psymtab_include_list;

			psymtab_include_list = (char **)
			  alloca ((includes_allocated *= 2) *
				  sizeof (char *));
			memcpy ((PTR) psymtab_include_list, (PTR) orig,
				includes_used * sizeof (char *));
		      }
		    continue;
		  }

		if (pst)
		  {
		    if (!have_name)
		      {
			pst->filename = (char *)
			  obstack_alloc (&pst->objfile->psymbol_obstack,
					 strlen (namestring) + 1);
			strcpy (pst->filename, namestring);
			have_name = 1;
			continue;
		      }
		    continue;
		  }

		/* This is a bonafide new source file.
		   End the current partial symtab and start a new one.  */

		if (pst && past_first_source_file)
		  {
		    hpread_end_psymtab (pst, psymtab_include_list,
					includes_used,
					(hp_symnum
					 * sizeof (struct dntt_type_block)),
					texthigh,
					dependency_list, dependencies_used);
		    pst = (struct partial_symtab *) 0;
		    includes_used = 0;
		    dependencies_used = 0;
		  }
		else
		  past_first_source_file = 1;

		valu = hpread_get_textlow (i, hp_symnum, objfile, symcount);
		valu += ANOFFSET (section_offsets, SECT_OFF_TEXT);
		pst = hpread_start_psymtab (objfile, section_offsets,
					    namestring, valu,
					    (hp_symnum
					 * sizeof (struct dntt_type_block)),
					    objfile->global_psymbols.next,
					    objfile->static_psymbols.next);
		texthigh = valu;
		have_name = 1;
		continue;
	      }

	    case DNTT_TYPE_MODULE:
	      /* A source file.  It's still unclear to me what the
	         real difference between a DNTT_TYPE_SRCFILE and DNTT_TYPE_MODULE
	         is supposed to be.  */

	      /* First end the previous psymtab */
	      if (pst)
		{
		  hpread_end_psymtab (pst, psymtab_include_list, includes_used,
				      ((hp_symnum - 1)
				       * sizeof (struct dntt_type_block)),
				      texthigh,
				      dependency_list, dependencies_used);
		  pst = (struct partial_symtab *) 0;
		  includes_used = 0;
		  dependencies_used = 0;
		  have_name = 0;
		}

	      /* Now begin a new module and a new psymtab for it */
	      SET_NAMESTRING (dn_bufp, &namestring, objfile);
	      valu = hpread_get_textlow (i, hp_symnum, objfile, symcount);
	      valu += ANOFFSET (section_offsets, SECT_OFF_TEXT);
	      if (!pst)
		{
		  pst = hpread_start_psymtab (objfile, section_offsets,
					      namestring, valu,
					      (hp_symnum
					 * sizeof (struct dntt_type_block)),
					      objfile->global_psymbols.next,
					      objfile->static_psymbols.next);
		  texthigh = valu;
		  have_name = 0;
		}
	      continue;

	    case DNTT_TYPE_FUNCTION:
	    case DNTT_TYPE_ENTRY:
	      /* The beginning of a function.  DNTT_TYPE_ENTRY may also denote
	         a secondary entry point.  */
	      valu = dn_bufp->dfunc.hiaddr + ANOFFSET (section_offsets,
						       SECT_OFF_TEXT);
	      if (valu > texthigh)
		texthigh = valu;
	      valu = dn_bufp->dfunc.lowaddr +
		ANOFFSET (section_offsets, SECT_OFF_TEXT);
	      SET_NAMESTRING (dn_bufp, &namestring, objfile);
	      if (dn_bufp->dfunc.global)
		add_psymbol_to_list (namestring, strlen (namestring),
				     VAR_NAMESPACE, LOC_BLOCK,
				     &objfile->global_psymbols, valu,
				     0, language_unknown, objfile);
	      else
		add_psymbol_to_list (namestring, strlen (namestring),
				     VAR_NAMESPACE, LOC_BLOCK,
				     &objfile->static_psymbols, valu,
				     0, language_unknown, objfile);
	      within_function = 1;
	      continue;

	    case DNTT_TYPE_DOC_FUNCTION:
	      valu = dn_bufp->ddocfunc.hiaddr + ANOFFSET (section_offsets,
							  SECT_OFF_TEXT);
	      if (valu > texthigh)
		texthigh = valu;
	      valu = dn_bufp->ddocfunc.lowaddr +
		ANOFFSET (section_offsets, SECT_OFF_TEXT);
	      SET_NAMESTRING (dn_bufp, &namestring, objfile);
	      if (dn_bufp->ddocfunc.global)
		add_psymbol_to_list (namestring, strlen (namestring),
				     VAR_NAMESPACE, LOC_BLOCK,
				     &objfile->global_psymbols, valu,
				     0, language_unknown, objfile);
	      else
		add_psymbol_to_list (namestring, strlen (namestring),
				     VAR_NAMESPACE, LOC_BLOCK,
				     &objfile->static_psymbols, valu,
				     0, language_unknown, objfile);
	      within_function = 1;
	      continue;

	    case DNTT_TYPE_BEGIN:
	    case DNTT_TYPE_END:
	      /* We don't check MODULE end here, because there can be
	         symbols beyond the module end which properly belong to the
	         current psymtab -- so we wait till the next MODULE start */


#ifdef QUICK_LOOK_UP
	      if (scan_start == hp_symnum
		  && symcount == hp_symnum + 1)
		{
		  /* If there are NO globals in an executable,
		     PXDB's index to the globals will point to
		     the last record in the file, which is
		     probably an END MODULE, i.e. this record.
		     ignore it and be done! */
		  continue;
		}
#endif /* QUICK_LOOK_UP */

	      /* Scope block begin/end.  We only care about function
	         and file blocks right now.  */

	      if ((dn_bufp->dend.endkind == DNTT_TYPE_FUNCTION) ||
		  (dn_bufp->dend.endkind == DNTT_TYPE_DOC_FUNCTION))
		within_function = 0;
	      continue;

	    case DNTT_TYPE_SVAR:
	    case DNTT_TYPE_DVAR:
	    case DNTT_TYPE_TYPEDEF:
	    case DNTT_TYPE_TAGDEF:
	      {
		/* Variables, typedefs an the like.  */
		enum address_class storage;
		namespace_enum namespace;

		/* Don't add locals to the partial symbol table.  */
		if (within_function
		    && (dn_bufp->dblock.kind == DNTT_TYPE_SVAR
			|| dn_bufp->dblock.kind == DNTT_TYPE_DVAR))
		  continue;

		/* TAGDEFs go into the structure namespace.  */
		if (dn_bufp->dblock.kind == DNTT_TYPE_TAGDEF)
		  namespace = STRUCT_NAMESPACE;
		else
		  namespace = VAR_NAMESPACE;

		/* What kind of "storage" does this use?  */
		if (dn_bufp->dblock.kind == DNTT_TYPE_SVAR)
		  storage = LOC_STATIC;
		else if (dn_bufp->dblock.kind == DNTT_TYPE_DVAR
			 && dn_bufp->ddvar.regvar)
		  storage = LOC_REGISTER;
		else if (dn_bufp->dblock.kind == DNTT_TYPE_DVAR)
		  storage = LOC_LOCAL;
		else
		  storage = LOC_UNDEF;

		SET_NAMESTRING (dn_bufp, &namestring, objfile);
		if (!pst)
		  {
		    pst = hpread_start_psymtab (objfile, section_offsets,
						"globals", 0,
						(hp_symnum
					 * sizeof (struct dntt_type_block)),
					      objfile->global_psymbols.next,
					     objfile->static_psymbols.next);
		  }

		/* Compute address of the data symbol */
		valu = dn_bufp->dsvar.location;
		/* Relocate in case it's in a shared library */
		if (storage == LOC_STATIC)
		  valu += ANOFFSET (section_offsets, SECT_OFF_DATA);

		/* Luckily, dvar, svar, typedef, and tagdef all
		   have their "global" bit in the same place, so it works
		   (though it's bad programming practice) to reference
		   "dsvar.global" even though we may be looking at
		   any of the above four types. */
		if (dn_bufp->dsvar.global)
		  {
		    add_psymbol_to_list (namestring, strlen (namestring),
					 namespace, storage,
					 &objfile->global_psymbols,
					 valu,
					 0, language_unknown, objfile);
		  }
		else
		  {
		    add_psymbol_to_list (namestring, strlen (namestring),
					 namespace, storage,
					 &objfile->static_psymbols,
					 valu,
					 0, language_unknown, objfile);
		  }

		/* For TAGDEF's, the above code added the tagname to the
		   struct namespace. This will cause tag "t" to be found
		   on a reference of the form "(struct t) x". But for
		   C++ classes, "t" will also be a typename, which we
		   want to find on a reference of the form "ptype t".
		   Therefore, we also add "t" to the var namespace.
		   Do the same for enum's due to the way aCC generates
		   debug info for these (see more extended comment
		   in hp-symtab-read.c).
		   We do the same for templates, so that "ptype t"
		   where "t" is a template also works. */
		if (dn_bufp->dblock.kind == DNTT_TYPE_TAGDEF &&
		  dn_bufp->dtype.type.dnttp.index < LNTT_SYMCOUNT (objfile))
		  {
		    int global = dn_bufp->dtag.global;
		    /* Look ahead to see if it's a C++ class */
		    dn_bufp = hpread_get_lntt (dn_bufp->dtype.type.dnttp.index, objfile);
		    if (dn_bufp->dblock.kind == DNTT_TYPE_CLASS ||
			dn_bufp->dblock.kind == DNTT_TYPE_ENUM ||
			dn_bufp->dblock.kind == DNTT_TYPE_TEMPLATE)
		      {
			if (global)
			  {
			    add_psymbol_to_list (namestring, strlen (namestring),
						 VAR_NAMESPACE, storage,
						 &objfile->global_psymbols,
						 dn_bufp->dsvar.location,
					      0, language_unknown, objfile);
			  }
			else
			  {
			    add_psymbol_to_list (namestring, strlen (namestring),
						 VAR_NAMESPACE, storage,
						 &objfile->static_psymbols,
						 dn_bufp->dsvar.location,
					      0, language_unknown, objfile);
			  }
		      }
		  }
	      }
	      continue;

	    case DNTT_TYPE_MEMENUM:
	    case DNTT_TYPE_CONST:
	      /* Constants and members of enumerated types.  */
	      SET_NAMESTRING (dn_bufp, &namestring, objfile);
	      if (!pst)
		{
		  pst = hpread_start_psymtab (objfile, section_offsets,
					      "globals", 0,
					      (hp_symnum
					 * sizeof (struct dntt_type_block)),
					      objfile->global_psymbols.next,
					      objfile->static_psymbols.next);
		}
	      if (dn_bufp->dconst.global)
		add_psymbol_to_list (namestring, strlen (namestring),
				     VAR_NAMESPACE, LOC_CONST,
				     &objfile->global_psymbols, 0,
				     0, language_unknown, objfile);
	      else
		add_psymbol_to_list (namestring, strlen (namestring),
				     VAR_NAMESPACE, LOC_CONST,
				     &objfile->static_psymbols, 0,
				     0, language_unknown, objfile);
	      continue;
	    default:
	      continue;
	    }
	}
    }

  /* End any pending partial symbol table. */
  if (pst)
    {
      hpread_end_psymtab (pst, psymtab_include_list, includes_used,
			  hp_symnum * sizeof (struct dntt_type_block),
			  0, dependency_list, dependencies_used);
    }

  discard_cleanups (old_chain);
}

/* Perform any local cleanups required when we are done with a particular
   objfile.  I.E, we are in the process of discarding all symbol information
   for an objfile, freeing up all memory held for it, and unlinking the
   objfile struct from the global list of known objfiles. */

void
hpread_symfile_finish (objfile)
     struct objfile *objfile;
{
  if (objfile->sym_private != NULL)
    {
      mfree (objfile->md, objfile->sym_private);
    }
}


/* The remaining functions are all for internal use only.  */

/* Various small functions to get entries in the debug symbol sections.  */

union dnttentry *
hpread_get_lntt (index, objfile)
     int index;
     struct objfile *objfile;
{
  return (union dnttentry *)
    &(LNTT (objfile)[(index * sizeof (struct dntt_type_block))]);
}

static union dnttentry *
hpread_get_gntt (index, objfile)
     int index;
     struct objfile *objfile;
{
  return (union dnttentry *)
    &(GNTT (objfile)[(index * sizeof (struct dntt_type_block))]);
}

union sltentry *
hpread_get_slt (index, objfile)
     int index;
     struct objfile *objfile;
{
  return (union sltentry *) &(SLT (objfile)[index * sizeof (union sltentry)]);
}

/* Get the low address associated with some symbol (typically the start
   of a particular source file or module).  Since that information is not
   stored as part of the DNTT_TYPE_MODULE or DNTT_TYPE_SRCFILE symbol we must infer it from
   the existance of DNTT_TYPE_FUNCTION symbols.  */

static unsigned long
hpread_get_textlow (global, index, objfile, symcount)
     int global;
     int index;
     struct objfile *objfile;
     int symcount;
{
  union dnttentry *dn_bufp;
  struct minimal_symbol *msymbol;

  /* Look for a DNTT_TYPE_FUNCTION symbol.  */
  if (index < symcount)		/* symcount is the number of symbols in */
    {				/*   the dbinfo, LNTT table */
      do
	{
	  if (global)
	    dn_bufp = hpread_get_gntt (index++, objfile);
	  else
	    dn_bufp = hpread_get_lntt (index++, objfile);
	}
      while (dn_bufp->dblock.kind != DNTT_TYPE_FUNCTION
	     && dn_bufp->dblock.kind != DNTT_TYPE_DOC_FUNCTION
	     && dn_bufp->dblock.kind != DNTT_TYPE_END
	     && index < symcount);
    }

  /* Avoid going past a DNTT_TYPE_END when looking for a DNTT_TYPE_FUNCTION.  This
     might happen when a sourcefile has no functions.  */
  if (dn_bufp->dblock.kind == DNTT_TYPE_END)
    return 0;

  /* Avoid going past the end of the LNTT file */
  if (index == symcount)
    return 0;

  /* The minimal symbols are typically more accurate for some reason.  */
  if (dn_bufp->dblock.kind == DNTT_TYPE_FUNCTION)
    msymbol = lookup_minimal_symbol (dn_bufp->dfunc.name + VT (objfile), NULL,
				     objfile);
  else				/* must be a DNTT_TYPE_DOC_FUNCTION */
    msymbol = lookup_minimal_symbol (dn_bufp->ddocfunc.name + VT (objfile), NULL,
				     objfile);

  if (msymbol)
    return SYMBOL_VALUE_ADDRESS (msymbol);
  else
    return dn_bufp->dfunc.lowaddr;
}

/* Allocate and partially fill a partial symtab.  It will be
   completely filled at the end of the symbol list.

   SYMFILE_NAME is the name of the symbol-file we are reading from, and ADDR
   is the address relative to which its symbols are (incremental) or 0
   (normal). */

static struct partial_symtab *
hpread_start_psymtab (objfile, section_offsets,
		      filename, textlow, ldsymoff, global_syms, static_syms)
     struct objfile *objfile;
     struct section_offsets *section_offsets;
     char *filename;
     CORE_ADDR textlow;
     int ldsymoff;
     struct partial_symbol **global_syms;
     struct partial_symbol **static_syms;
{
  int offset = ANOFFSET (section_offsets, SECT_OFF_TEXT);
  extern void hpread_psymtab_to_symtab ();
  struct partial_symtab *result =
  start_psymtab_common (objfile, section_offsets,
			filename, textlow, global_syms, static_syms);

  result->textlow += offset;
  result->read_symtab_private = (char *)
    obstack_alloc (&objfile->psymbol_obstack, sizeof (struct symloc));
  LDSYMOFF (result) = ldsymoff;
  result->read_symtab = hpread_psymtab_to_symtab;

  return result;
}


/* Close off the current usage of PST.  
   Returns PST or NULL if the partial symtab was empty and thrown away.

   capping_symbol_offset  --Byte index in LNTT or GNTT of the
   last symbol processed during the build
   of the previous pst.

   FIXME:  List variables and peculiarities of same.  */

static struct partial_symtab *
hpread_end_psymtab (pst, include_list, num_includes, capping_symbol_offset,
		    capping_text, dependency_list, number_dependencies)
     struct partial_symtab *pst;
     char **include_list;
     int num_includes;
     int capping_symbol_offset;
     CORE_ADDR capping_text;
     struct partial_symtab **dependency_list;
     int number_dependencies;
{
  int i;
  struct objfile *objfile = pst->objfile;
  int offset = ANOFFSET (pst->section_offsets, SECT_OFF_TEXT);

#ifdef DUMPING
  /* Turn on to see what kind of a psymtab we've built. */
  static int dumping = 0;
#endif

  if (capping_symbol_offset != -1)
    LDSYMLEN (pst) = capping_symbol_offset - LDSYMOFF (pst);
  else
    LDSYMLEN (pst) = 0;
  pst->texthigh = capping_text + offset;

  pst->n_global_syms =
    objfile->global_psymbols.next - (objfile->global_psymbols.list + pst->globals_offset);
  pst->n_static_syms =
    objfile->static_psymbols.next - (objfile->static_psymbols.list + pst->statics_offset);

#ifdef DUMPING
  if (dumping)
    {
      printf ("\nPst %s, LDSYMOFF %x (%x), LDSYMLEN %x (%x), globals %d, statics %d\n",
	      pst->filename,
	      LDSYMOFF (pst),
	      LDSYMOFF (pst) / sizeof (struct dntt_type_block),
	      LDSYMLEN (pst),
	      LDSYMLEN (pst) / sizeof (struct dntt_type_block),
	      pst->n_global_syms, pst->n_static_syms);
    }
#endif

  pst->number_of_dependencies = number_dependencies;
  if (number_dependencies)
    {
      pst->dependencies = (struct partial_symtab **)
	obstack_alloc (&objfile->psymbol_obstack,
		    number_dependencies * sizeof (struct partial_symtab *));
      memcpy (pst->dependencies, dependency_list,
	      number_dependencies * sizeof (struct partial_symtab *));
    }
  else
    pst->dependencies = 0;

  for (i = 0; i < num_includes; i++)
    {
      struct partial_symtab *subpst =
      allocate_psymtab (include_list[i], objfile);

      subpst->section_offsets = pst->section_offsets;
      subpst->read_symtab_private =
	(char *) obstack_alloc (&objfile->psymbol_obstack,
				sizeof (struct symloc));
      LDSYMOFF (subpst) =
	LDSYMLEN (subpst) =
	subpst->textlow =
	subpst->texthigh = 0;

      /* We could save slight bits of space by only making one of these,
         shared by the entire set of include files.  FIXME-someday.  */
      subpst->dependencies = (struct partial_symtab **)
	obstack_alloc (&objfile->psymbol_obstack,
		       sizeof (struct partial_symtab *));
      subpst->dependencies[0] = pst;
      subpst->number_of_dependencies = 1;

      subpst->globals_offset =
	subpst->n_global_syms =
	subpst->statics_offset =
	subpst->n_static_syms = 0;

      subpst->readin = 0;
      subpst->symtab = 0;
      subpst->read_symtab = pst->read_symtab;
    }

  sort_pst_symbols (pst);

  /* If there is already a psymtab or symtab for a file of this name, remove it.
     (If there is a symtab, more drastic things also happen.)
     This happens in VxWorks.  */
  free_named_symtabs (pst->filename);

  if (num_includes == 0
      && number_dependencies == 0
      && pst->n_global_syms == 0
      && pst->n_static_syms == 0)
    {
      /* Throw away this psymtab, it's empty.  We can't deallocate it, since
         it is on the obstack, but we can forget to chain it on the list. 
         Empty psymtabs happen as a result of header files which don't have
         any symbols in them.  There can be a lot of them.  But this check
         is wrong, in that a psymtab with N_SLINE entries but nothing else
         is not empty, but we don't realize that.  Fixing that without slowing
         things down might be tricky.
         It's also wrong if we're using the quick look-up tables, as
         we can get empty psymtabs from modules with no routines in
         them. */

      discard_psymtab (pst);

      /* Indicate that psymtab was thrown away.  */
      pst = (struct partial_symtab *) NULL;

    }
  return pst;
}


/* End of hp-psymtab-read.c */

/* Set indentation to 4 spaces for Emacs; this file is
   mostly non-GNU-ish in its style :-( */
#if 0
***Local Variables:
***c - basic - offset:4
*** End:
#endif