aboutsummaryrefslogtreecommitdiff
path: root/gas/config/tc-ns32k.c
blob: feae0fd36ef31c4798e04a4842947b5898983e29 (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
/* ns32k.c  -- Assemble on the National Semiconductor 32k series
   Copyright 1987, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
   2001, 2002, 2003, 2005
   Free Software Foundation, Inc.

   This file is part of GAS, the GNU Assembler.

   GAS 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, or (at your option)
   any later version.

   GAS 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 GAS; see the file COPYING.  If not, write to the Free
   Software Foundation, 59 Temple Place - Suite 330, Boston, MA
   02111-1307, USA.  */

/*#define SHOW_NUM 1*//* Uncomment for debugging.  */

#include <stdio.h>

#include "as.h"
#include "opcode/ns32k.h"

#include "obstack.h"

/* Macros.  */
#define IIF_ENTRIES 13		/* Number of entries in iif.  */
#define PRIVATE_SIZE 256	/* Size of my garbage memory.  */
#define MAX_ARGS 4
#define DEFAULT	-1		/* addr_mode returns this value when
                                   plain constant or label is
                                   encountered.  */

#define IIF(ptr,a1,c1,e1,g1,i1,k1,m1,o1,q1,s1,u1)	\
    iif.iifP[ptr].type = a1;				\
    iif.iifP[ptr].size = c1;				\
    iif.iifP[ptr].object = e1;				\
    iif.iifP[ptr].object_adjust = g1;			\
    iif.iifP[ptr].pcrel = i1;				\
    iif.iifP[ptr].pcrel_adjust = k1;			\
    iif.iifP[ptr].im_disp = m1;				\
    iif.iifP[ptr].relax_substate = o1;			\
    iif.iifP[ptr].bit_fixP = q1;			\
    iif.iifP[ptr].addr_mode = s1;			\
    iif.iifP[ptr].bsr = u1;

#ifdef SEQUENT_COMPATABILITY
#define LINE_COMMENT_CHARS "|"
#define ABSOLUTE_PREFIX '@'
#define IMMEDIATE_PREFIX '#'
#endif

#ifndef LINE_COMMENT_CHARS
#define LINE_COMMENT_CHARS "#"
#endif

const char comment_chars[] = "#";
const char line_comment_chars[] = LINE_COMMENT_CHARS;
const char line_separator_chars[] = ";";
static int default_disp_size = 4; /* Displacement size for external refs.  */

#if !defined(ABSOLUTE_PREFIX) && !defined(IMMEDIATE_PREFIX)
#define ABSOLUTE_PREFIX '@'	/* One or the other MUST be defined.  */
#endif

struct addr_mode
{
  signed char mode;		/* Addressing mode of operand (0-31).  */
  signed char scaled_mode;	/* Mode combined with scaled mode.  */
  char scaled_reg;		/* Register used in scaled+1 (1-8).  */
  char float_flag;		/* Set if R0..R7 was F0..F7 ie a
				   floating-point-register.  */
  char am_size;			/* Estimated max size of general addr-mode
				   parts.  */
  char im_disp;			/* If im_disp==1 we have a displacement.  */
  char pcrel;			/* 1 if pcrel, this is really redundant info.  */
  char disp_suffix[2];		/* Length of displacement(s), 0=undefined.  */
  char *disp[2];		/* Pointer(s) at displacement(s)
				   or immediates(s)     (ascii).  */
  char index_byte;		/* Index byte.  */
};
typedef struct addr_mode addr_modeS;

char *freeptr, *freeptr_static;	/* Points at some number of free bytes.  */
struct hash_control *inst_hash_handle;

struct ns32k_opcode *desc;	/* Pointer at description of instruction.  */
addr_modeS addr_modeP;
const char EXP_CHARS[] = "eE";
const char FLT_CHARS[] = "fd";	/* We don't want to support lowercase,
                                   do we?  */

/* UPPERCASE denotes live names when an instruction is built, IIF is
   used as an intermediate form to store the actual parts of the
   instruction. A ns32k machine instruction can be divided into a
   couple of sub PARTs. When an instruction is assembled the
   appropriate PART get an assignment. When an IIF has been completed
   it is converted to a FRAGment as specified in AS.H.  */

/* Internal structs.  */
struct ns32k_option
{
  char *pattern;
  unsigned long or;
  unsigned long and;
};

typedef struct
{
  int type;			/* How to interpret object.  */
  int size;			/* Estimated max size of object.  */
  unsigned long object;		/* Binary data.  */
  int object_adjust;		/* Number added to object.  */
  int pcrel;			/* True if object is pcrel.  */
  int pcrel_adjust;		/* Length in bytes from the instruction
				   start to the	displacement.  */
  int im_disp;			/* True if the object is a displacement.  */
  relax_substateT relax_substate;/*Initial relaxsubstate.  */
  bit_fixS *bit_fixP;		/* Pointer at bit_fix struct.  */
  int addr_mode;		/* What addrmode do we associate with this
				   iif-entry.  */
  char bsr;			/* Sequent hack.  */
} iif_entryT;			/* Internal Instruction Format.  */

struct int_ins_form
{
  int instr_size;		/* Max size of instruction in bytes.  */
  iif_entryT iifP[IIF_ENTRIES + 1];
};

struct int_ins_form iif;
expressionS exprP;
char *input_line_pointer;

/* Description of the PARTs in IIF
  object[n]:
   0	total length in bytes of entries in iif
   1	opcode
   2	index_byte_a
   3	index_byte_b
   4	disp_a_1
   5	disp_a_2
   6	disp_b_1
   7	disp_b_2
   8	imm_a
   9	imm_b
   10	implied1
   11	implied2

   For every entry there is a datalength in bytes. This is stored in size[n].
  	 0,	the objectlength is not explicitly given by the instruction
  		and the operand is undefined. This is a case for relaxation.
  		Reserve 4 bytes for the final object.

  	 1,	the entry contains one byte
  	 2,	the entry contains two bytes
  	 3,	the entry contains three bytes
  	 4,	the entry contains four bytes
  	etc

   Furthermore, every entry has a data type identifier in type[n].

   	 0,	the entry is void, ignore it.
   	 1,	the entry is a binary number.
  	 2,	the entry is a pointer at an expression.
  		Where expression may be as simple as a single '1',
  		and as complicated as  foo-bar+12,
   		foo and bar may be undefined but suffixed by :{b|w|d} to
  		control the length of the object.

  	 3,	the entry is a pointer at a bignum struct

   The low-order-byte corresponds to low physical memory.
   Obviously a FRAGment must be created for each valid disp in PART whose
   datalength is undefined (to bad) .
   The case where just the expression is undefined is less severe and is
   handled by fix. Here the number of bytes in the objectfile is known.
   With this representation we simplify the assembly and separates the
   machine dependent/independent parts in a more clean way (said OE).  */

struct ns32k_option opt1[] =		/* restore, exit.  */
{
  {"r0", 0x80, 0xff},
  {"r1", 0x40, 0xff},
  {"r2", 0x20, 0xff},
  {"r3", 0x10, 0xff},
  {"r4", 0x08, 0xff},
  {"r5", 0x04, 0xff},
  {"r6", 0x02, 0xff},
  {"r7", 0x01, 0xff},
  {0, 0x00, 0xff}
};
struct ns32k_option opt2[] =		/* save, enter.  */
{
  {"r0", 0x01, 0xff},
  {"r1", 0x02, 0xff},
  {"r2", 0x04, 0xff},
  {"r3", 0x08, 0xff},
  {"r4", 0x10, 0xff},
  {"r5", 0x20, 0xff},
  {"r6", 0x40, 0xff},
  {"r7", 0x80, 0xff},
  {0, 0x00, 0xff}
};
struct ns32k_option opt3[] =		/* setcfg.  */
{
  {"c", 0x8, 0xff},
  {"m", 0x4, 0xff},
  {"f", 0x2, 0xff},
  {"i", 0x1, 0xff},
  {0, 0x0, 0xff}
};
struct ns32k_option opt4[] =		/* cinv.  */
{
  {"a", 0x4, 0xff},
  {"i", 0x2, 0xff},
  {"d", 0x1, 0xff},
  {0, 0x0, 0xff}
};
struct ns32k_option opt5[] =		/* String inst.  */
{
  {"b", 0x2, 0xff},
  {"u", 0xc, 0xff},
  {"w", 0x4, 0xff},
  {0, 0x0, 0xff}
};
struct ns32k_option opt6[] =		/* Plain reg ext,cvtp etc.  */
{
  {"r0", 0x00, 0xff},
  {"r1", 0x01, 0xff},
  {"r2", 0x02, 0xff},
  {"r3", 0x03, 0xff},
  {"r4", 0x04, 0xff},
  {"r5", 0x05, 0xff},
  {"r6", 0x06, 0xff},
  {"r7", 0x07, 0xff},
  {0, 0x00, 0xff}
};

#if !defined(NS32032) && !defined(NS32532)
#define NS32532
#endif

struct ns32k_option cpureg_532[] =	/* lpr spr.  */
{
  {"us", 0x0, 0xff},
  {"dcr", 0x1, 0xff},
  {"bpc", 0x2, 0xff},
  {"dsr", 0x3, 0xff},
  {"car", 0x4, 0xff},
  {"fp", 0x8, 0xff},
  {"sp", 0x9, 0xff},
  {"sb", 0xa, 0xff},
  {"usp", 0xb, 0xff},
  {"cfg", 0xc, 0xff},
  {"psr", 0xd, 0xff},
  {"intbase", 0xe, 0xff},
  {"mod", 0xf, 0xff},
  {0, 0x00, 0xff}
};
struct ns32k_option mmureg_532[] =	/* lmr smr.  */
{
  {"mcr", 0x9, 0xff},
  {"msr", 0xa, 0xff},
  {"tear", 0xb, 0xff},
  {"ptb0", 0xc, 0xff},
  {"ptb1", 0xd, 0xff},
  {"ivar0", 0xe, 0xff},
  {"ivar1", 0xf, 0xff},
  {0, 0x0, 0xff}
};

struct ns32k_option cpureg_032[] =	/* lpr spr.  */
{
  {"upsr", 0x0, 0xff},
  {"fp", 0x8, 0xff},
  {"sp", 0x9, 0xff},
  {"sb", 0xa, 0xff},
  {"psr", 0xd, 0xff},
  {"intbase", 0xe, 0xff},
  {"mod", 0xf, 0xff},
  {0, 0x0, 0xff}
};
struct ns32k_option mmureg_032[] =	/* lmr smr.  */
{
  {"bpr0", 0x0, 0xff},
  {"bpr1", 0x1, 0xff},
  {"pf0", 0x4, 0xff},
  {"pf1", 0x5, 0xff},
  {"sc", 0x8, 0xff},
  {"msr", 0xa, 0xff},
  {"bcnt", 0xb, 0xff},
  {"ptb0", 0xc, 0xff},
  {"ptb1", 0xd, 0xff},
  {"eia", 0xf, 0xff},
  {0, 0x0, 0xff}
};

#if defined(NS32532)
struct ns32k_option *cpureg = cpureg_532;
struct ns32k_option *mmureg = mmureg_532;
#else
struct ns32k_option *cpureg = cpureg_032;
struct ns32k_option *mmureg = mmureg_032;
#endif


const pseudo_typeS md_pseudo_table[] =
{					/* So far empty.  */
  {0, 0, 0}
};

#define IND(x,y)	(((x)<<2)+(y))

/* Those are index's to relax groups in md_relax_table ie it must be
   multiplied by 4 to point at a group start. Viz IND(x,y) Se function
   relax_segment in write.c for more info.  */

#define BRANCH		1
#define PCREL		2

/* Those are index's to entries in a relax group.  */

#define BYTE		0
#define WORD		1
#define DOUBLE		2
#define UNDEF           3
/* Those limits are calculated from the displacement start in memory.
   The ns32k uses the beginning of the instruction as displacement
   base.  This type of displacements could be handled here by moving
   the limit window up or down. I choose to use an internal
   displacement base-adjust as there are other routines that must
   consider this. Also, as we have two various offset-adjusts in the
   ns32k (acb versus br/brs/jsr/bcond), two set of limits would have
   had to be used.  Now we dont have to think about that.  */

const relax_typeS md_relax_table[] =
{
  {1, 1, 0, 0},
  {1, 1, 0, 0},
  {1, 1, 0, 0},
  {1, 1, 0, 0},

  {(63), (-64), 1, IND (BRANCH, WORD)},
  {(8192), (-8192), 2, IND (BRANCH, DOUBLE)},
  {0, 0, 4, 0},
  {1, 1, 0, 0}
};

/* Array used to test if mode contains displacements.
   Value is true if mode contains displacement.  */

char disp_test[] =
{0, 0, 0, 0, 0, 0, 0, 0,
 1, 1, 1, 1, 1, 1, 1, 1,
 1, 1, 1, 0, 0, 1, 1, 0,
 1, 1, 1, 1, 1, 1, 1, 1};

/* Array used to calculate max size of displacements.  */

char disp_size[] =
{4, 1, 2, 0, 4};

/* Parse a general operand into an addressingmode struct

   In:  pointer at operand in ascii form
        pointer at addr_mode struct for result
        the level of recursion. (always 0 or 1)

   Out: data in addr_mode struct.  */

static int
addr_mode (char *operand,
	   addr_modeS *addr_modeP,
	   int recursive_level)
{
  char *str;
  int i;
  int strl;
  int mode;
  int j;

  mode = DEFAULT;		/* Default.  */
  addr_modeP->scaled_mode = 0;	/* Why not.  */
  addr_modeP->scaled_reg = 0;	/* If 0, not scaled index.  */
  addr_modeP->float_flag = 0;
  addr_modeP->am_size = 0;
  addr_modeP->im_disp = 0;
  addr_modeP->pcrel = 0;	/* Not set in this function.  */
  addr_modeP->disp_suffix[0] = 0;
  addr_modeP->disp_suffix[1] = 0;
  addr_modeP->disp[0] = NULL;
  addr_modeP->disp[1] = NULL;
  str = operand;

  if (str[0] == 0)
    return 0;

  strl = strlen (str);

  switch (str[0])
    {
      /* The following three case statements controls the mode-chars
	 this is the place to ed if you want to change them.  */
#ifdef ABSOLUTE_PREFIX
    case ABSOLUTE_PREFIX:
      if (str[strl - 1] == ']')
	break;
      addr_modeP->mode = 21;	/* absolute */
      addr_modeP->disp[0] = str + 1;
      return -1;
#endif
#ifdef IMMEDIATE_PREFIX
    case IMMEDIATE_PREFIX:
      if (str[strl - 1] == ']')
	break;
      addr_modeP->mode = 20;	/* immediate */
      addr_modeP->disp[0] = str + 1;
      return -1;
#endif
    case '.':
      if (str[strl - 1] != ']')
	{
	  switch (str[1])
	    {
	    case '-':
	    case '+':
	      if (str[2] != '\000')
		{
		  addr_modeP->mode = 27;	/* pc-relative */
		  addr_modeP->disp[0] = str + 2;
		  return -1;
		}
	    default:
	      as_bad (_("Invalid syntax in PC-relative addressing mode"));
	      return 0;
	    }
	}
      break;
    case 'e':
      if (str[strl - 1] != ']')
	{
	  if ((!strncmp (str, "ext(", 4)) && strl > 7)
	    {				/* external */
	      addr_modeP->disp[0] = str + 4;
	      i = 0;
	      j = 2;
	      do
		{			/* disp[0]'s termination point.  */
		  j += 1;
		  if (str[j] == '(')
		    i++;
		  if (str[j] == ')')
		    i--;
		}
	      while (j < strl && i != 0);
	      if (i != 0 || !(str[j + 1] == '-' || str[j + 1] == '+'))
		{
		  as_bad (_("Invalid syntax in External addressing mode"));
		  return (0);
		}
	      str[j] = '\000';		/* null terminate disp[0] */
	      addr_modeP->disp[1] = str + j + 2;
	      addr_modeP->mode = 22;
	      return -1;
	    }
	}
      break;

    default:
      ;
    }

  strl = strlen (str);

  switch (strl)
    {
    case 2:
      switch (str[0])
	{
	case 'f':
	  addr_modeP->float_flag = 1;
	  /* Drop through.  */
	case 'r':
	  if (str[1] >= '0' && str[1] < '8')
	    {
	      addr_modeP->mode = str[1] - '0';
	      return -1;
	    }
	  break;
	default:
	  break;
	}
      /* Drop through.  */

    case 3:
      if (!strncmp (str, "tos", 3))
	{
	  addr_modeP->mode = 23;	/* TopOfStack */
	  return -1;
	}
      break;

    default:
      break;
    }

  if (strl > 4)
    {
      if (str[strl - 1] == ')')
	{
	  if (str[strl - 2] == ')')
	    {
	      if (!strncmp (&str[strl - 5], "(fp", 3))
		mode = 16;		/* Memory Relative.  */
	      else if (!strncmp (&str[strl - 5], "(sp", 3))
		mode = 17;
	      else if (!strncmp (&str[strl - 5], "(sb", 3))
		mode = 18;

	      if (mode != DEFAULT)
		{
		  /* Memory relative.  */
		  addr_modeP->mode = mode;
		  j = strl - 5;		/* Temp for end of disp[0].  */
		  i = 0;

		  do
		    {
		      strl -= 1;
		      if (str[strl] == ')')
			i++;
		      if (str[strl] == '(')
			i--;
		    }
		  while (strl > -1 && i != 0);

		  if (i != 0)
		    {
		      as_bad (_("Invalid syntax in Memory Relative addressing mode"));
		      return (0);
		    }

		  addr_modeP->disp[1] = str;
		  addr_modeP->disp[0] = str + strl + 1;
		  str[j] = '\000';	/* Null terminate disp[0] .  */
		  str[strl] = '\000';	/* Null terminate disp[1].  */

		  return -1;
		}
	    }

	  switch (str[strl - 3])
	    {
	    case 'r':
	    case 'R':
	      if (str[strl - 2] >= '0'
		  && str[strl - 2] < '8'
		  && str[strl - 4] == '(')
		{
		  addr_modeP->mode = str[strl - 2] - '0' + 8;
		  addr_modeP->disp[0] = str;
		  str[strl - 4] = 0;
		  return -1;		/* reg rel */
		}
	      /* Drop through.  */

	    default:
	      if (!strncmp (&str[strl - 4], "(fp", 3))
		mode = 24;
	      else if (!strncmp (&str[strl - 4], "(sp", 3))
		mode = 25;
	      else if (!strncmp (&str[strl - 4], "(sb", 3))
		mode = 26;
	      else if (!strncmp (&str[strl - 4], "(pc", 3))
		mode = 27;

	      if (mode != DEFAULT)
		{
		  addr_modeP->mode = mode;
		  addr_modeP->disp[0] = str;
		  str[strl - 4] = '\0';

		  return -1;		/* Memory space.  */
		}
	    }
	}

      /* No trailing ')' do we have a ']' ?  */
      if (str[strl - 1] == ']')
	{
	  switch (str[strl - 2])
	    {
	    case 'b':
	      mode = 28;
	      break;
	    case 'w':
	      mode = 29;
	      break;
	    case 'd':
	      mode = 30;
	      break;
	    case 'q':
	      mode = 31;
	      break;
	    default:
	      as_bad (_("Invalid scaled-indexed mode, use (b,w,d,q)"));

	      if (str[strl - 3] != ':' || str[strl - 6] != '['
		  || str[strl - 5] == 'r' || str[strl - 4] < '0'
		  || str[strl - 4] > '7')
		as_bad (_("Syntax in scaled-indexed mode, use [Rn:m] where n=[0..7] m={b,w,d,q}"));
	    } /* Scaled index.  */

	  if (recursive_level > 0)
	    {
	      as_bad (_("Scaled-indexed addressing mode combined with scaled-index"));
	      return 0;
	    }

	  addr_modeP->am_size += 1;	/* scaled index byte.  */
	  j = str[strl - 4] - '0';	/* store temporary.  */
	  str[strl - 6] = '\000';	/* nullterminate for recursive call.  */
	  i = addr_mode (str, addr_modeP, 1);

	  if (!i || addr_modeP->mode == 20)
	    {
	      as_bad (_("Invalid or illegal addressing mode combined with scaled-index"));
	      return 0;
	    }

	  addr_modeP->scaled_mode = addr_modeP->mode;	/* Store the inferior mode.  */
	  addr_modeP->mode = mode;
	  addr_modeP->scaled_reg = j + 1;

	  return -1;
	}
    }

  addr_modeP->mode = DEFAULT;	/* Default to whatever.  */
  addr_modeP->disp[0] = str;

  return -1;
}

static void
evaluate_expr (expressionS *resultP, char *ptr)
{
  char *tmp_line;

  tmp_line = input_line_pointer;
  input_line_pointer = ptr;
  expression (resultP);
  input_line_pointer = tmp_line;
}

/* ptr points at string addr_modeP points at struct with result This
   routine calls addr_mode to determine the general addr.mode of the
   operand. When this is ready it parses the displacements for size
   specifying suffixes and determines size of immediate mode via
   ns32k-opcode.  Also builds index bytes if needed.  */

static int
get_addr_mode (char *ptr, addr_modeS *addr_modeP)
{
  int tmp;

  addr_mode (ptr, addr_modeP, 0);

  if (addr_modeP->mode == DEFAULT || addr_modeP->scaled_mode == -1)
    {
      /* Resolve ambiguous operands, this shouldn't be necessary if
	 one uses standard NSC operand syntax. But the sequent
	 compiler doesn't!!!  This finds a proper addressing mode
	 if it is implicitly stated. See ns32k-opcode.h.  */
      (void) evaluate_expr (&exprP, ptr); /* This call takes time Sigh!  */

      if (addr_modeP->mode == DEFAULT)
	{
	  if (exprP.X_add_symbol || exprP.X_op_symbol)
	    addr_modeP->mode = desc->default_model; /* We have a label.  */
	  else
	    addr_modeP->mode = desc->default_modec; /* We have a constant.  */
	}
      else
	{
	  if (exprP.X_add_symbol || exprP.X_op_symbol)
	    addr_modeP->scaled_mode = desc->default_model;
	  else
	    addr_modeP->scaled_mode = desc->default_modec;
	}

      /* Must put this mess down in addr_mode to handle the scaled
         case better.  */
    }

  /* It appears as the sequent compiler wants an absolute when we have
     a label without @. Constants becomes immediates besides the addr
     case.  Think it does so with local labels too, not optimum, pcrel
     is better.  When I have time I will make gas check this and
     select pcrel when possible Actually that is trivial.  */
  if ((tmp = addr_modeP->scaled_reg))
    {				/* Build indexbyte.  */
      tmp--;			/* Remember regnumber comes incremented for
				   flagpurpose.  */
      tmp |= addr_modeP->scaled_mode << 3;
      addr_modeP->index_byte = (char) tmp;
      addr_modeP->am_size += 1;
    }

  assert (addr_modeP->mode >= 0); 
  if (disp_test[(unsigned int) addr_modeP->mode])
    {
      char c;
      char suffix;
      char suffix_sub;
      int i;
      char *toP;
      char *fromP;

      /* There was a displacement, probe for length  specifying suffix.  */
      addr_modeP->pcrel = 0;

      assert(addr_modeP->mode >= 0);
      if (disp_test[(unsigned int) addr_modeP->mode])
	{
	  /* There is a displacement.  */
	  if (addr_modeP->mode == 27 || addr_modeP->scaled_mode == 27)
	    /* Do we have pcrel. mode.  */
	    addr_modeP->pcrel = 1;

	  addr_modeP->im_disp = 1;

	  for (i = 0; i < 2; i++)
	    {
	      suffix_sub = suffix = 0;

	      if ((toP = addr_modeP->disp[i]))
		{
		  /* Suffix of expression, the largest size rules.  */
		  fromP = toP;

		  while ((c = *fromP++))
		    {
		      *toP++ = c;
		      if (c == ':')
			{
			  switch (*fromP)
			    {
			    case '\0':
			      as_warn (_("Premature end of suffix -- Defaulting to d"));
			      suffix = 4;
			      continue;
			    case 'b':
			      suffix_sub = 1;
			      break;
			    case 'w':
			      suffix_sub = 2;
			      break;
			    case 'd':
			      suffix_sub = 4;
			      break;
			    default:
			      as_warn (_("Bad suffix after ':' use {b|w|d} Defaulting to d"));
			      suffix = 4;
			    }

			  fromP ++;
			  toP --;	/* So we write over the ':' */

			  if (suffix < suffix_sub)
			    suffix = suffix_sub;
			}
		    }

		  *toP = '\0'; /* Terminate properly.  */
		  addr_modeP->disp_suffix[i] = suffix;
		  addr_modeP->am_size += suffix ? suffix : 4;
		}
	    }
	}
    }
  else
    {
      if (addr_modeP->mode == 20)
	{
	  /* Look in ns32k_opcode for size.  */
	  addr_modeP->disp_suffix[0] = addr_modeP->am_size = desc->im_size;
	  addr_modeP->im_disp = 0;
	}
    }

  return addr_modeP->mode;
}

/* Read an optionlist.  */

static void
optlist (char *str,			/* The string to extract options from.  */
	 struct ns32k_option *optionP,	/* How to search the string.  */
	 unsigned long *default_map)	/* Default pattern and output.  */
{
  int i, j, k, strlen1, strlen2;
  char *patternP, *strP;

  strlen1 = strlen (str);

  if (strlen1 < 1)
    as_fatal (_("Very short instr to option, ie you can't do it on a NULLstr"));

  for (i = 0; optionP[i].pattern != 0; i++)
    {
      strlen2 = strlen (optionP[i].pattern);

      for (j = 0; j < strlen1; j++)
	{
	  patternP = optionP[i].pattern;
	  strP = &str[j];

	  for (k = 0; k < strlen2; k++)
	    {
	      if (*(strP++) != *(patternP++))
		break;
	    }

	  if (k == strlen2)
	    {			/* match */
	      *default_map |= optionP[i].or;
	      *default_map &= optionP[i].and;
	    }
	}
    }
}

/* Search struct for symbols.
   This function is used to get the short integer form of reg names in
   the instructions lmr, smr, lpr, spr return true if str is found in
   list.  */

static int
list_search (char *str,				/* The string to match.  */
	     struct ns32k_option *optionP,	/* List to search.  */
	     unsigned long *default_map)	/* Default pattern and output.  */
{
  int i;

  for (i = 0; optionP[i].pattern != 0; i++)
    {
      if (!strncmp (optionP[i].pattern, str, 20))
	{
	  /* Use strncmp to be safe.  */
	  *default_map |= optionP[i].or;
	  *default_map &= optionP[i].and;

	  return -1;
	}
    }

  as_bad (_("No such entry in list. (cpu/mmu register)"));
  return 0;
}

/* Create a bit_fixS in obstack 'notes'.
   This struct is used to profile the normal fix. If the bit_fixP is a
   valid pointer (not NULL) the bit_fix data will be used to format
   the fix.  */

static bit_fixS *
bit_fix_new (int size,		/* Length of bitfield.  */
	     int offset,	/* Bit offset to bitfield.  */
	     long min,		/* Signextended min for bitfield.  */
	     long max,		/* Signextended max for bitfield.  */
	     long add,		/* Add mask, used for huffman prefix.  */
	     long base_type,	/* 0 or 1, if 1 it's exploded to opcode ptr.  */
	     long base_adj)
{
  bit_fixS *bit_fixP;

  bit_fixP = (bit_fixS *) obstack_alloc (&notes, sizeof (bit_fixS));

  bit_fixP->fx_bit_size = size;
  bit_fixP->fx_bit_offset = offset;
  bit_fixP->fx_bit_base = base_type;
  bit_fixP->fx_bit_base_adj = base_adj;
  bit_fixP->fx_bit_max = max;
  bit_fixP->fx_bit_min = min;
  bit_fixP->fx_bit_add = add;

  return bit_fixP;
}

/* Convert operands to iif-format and adds bitfields to the opcode.
   Operands are parsed in such an order that the opcode is updated from
   its most significant bit, that is when the operand need to alter the
   opcode.
   Be careful not to put to objects in the same iif-slot.  */

static void
encode_operand (int argc,
		char **argv,
		const char *operandsP,
		const char *suffixP,
		char im_size ATTRIBUTE_UNUSED,
		char opcode_bit_ptr)
{
  int i, j;
  char d;
  int pcrel, b, loop, pcrel_adjust;
  unsigned long tmp;

  for (loop = 0; loop < argc; loop++)
    {
      /* What operand are we supposed to work on.  */
      i = operandsP[loop << 1] - '1';
      if (i > 3)
	as_fatal (_("Internal consistency error.  check ns32k-opcode.h"));

      pcrel = 0;
      pcrel_adjust = 0;
      tmp = 0;

      switch ((d = operandsP[(loop << 1) + 1]))
	{
	case 'f':		/* Operand of sfsr turns out to be a nasty
				   specialcase.  */
	  opcode_bit_ptr -= 5;
	case 'Z':		/* Float not immediate.  */
	case 'F':		/* 32 bit float	general form.  */
	case 'L':		/* 64 bit float.  */
	case 'I':		/* Integer not immediate.  */
	case 'B':		/* Byte	 */
	case 'W':		/* Word	 */
	case 'D':		/* Double-word.  */
	case 'A':		/* Double-word	gen-address-form ie no regs
				   allowed.  */
	  get_addr_mode (argv[i], &addr_modeP);

	  if ((addr_modeP.mode == 20) &&
	     (d == 'I' || d == 'Z' || d == 'A'))
	    as_fatal (d == 'A'? _("Address of immediate operand"):
			_("Invalid immediate write operand."));

	  if (opcode_bit_ptr == desc->opcode_size)
	    b = 4;
	  else
	    b = 6;

	  for (j = b; j < (b + 2); j++)
	    {
	      if (addr_modeP.disp[j - b])
		{
		  IIF (j,
		       2,
		       addr_modeP.disp_suffix[j - b],
		       (unsigned long) addr_modeP.disp[j - b],
		       0,
		       addr_modeP.pcrel,
		       iif.instr_size,
		       addr_modeP.im_disp,
		       IND (BRANCH, BYTE),
		       NULL,
		       (addr_modeP.scaled_reg ? addr_modeP.scaled_mode
			: addr_modeP.mode),
		       0);
		}
	    }

	  opcode_bit_ptr -= 5;
	  iif.iifP[1].object |= ((long) addr_modeP.mode) << opcode_bit_ptr;

	  if (addr_modeP.scaled_reg)
	    {
	      j = b / 2;
	      IIF (j, 1, 1, (unsigned long) addr_modeP.index_byte,
		   0, 0, 0, 0, 0, NULL, -1, 0);
	    }
	  break;

	case 'b':		/* Multiple instruction disp.  */
	  freeptr++;		/* OVE:this is an useful hack.  */
	  sprintf (freeptr, "((%s-1)*%d)", argv[i], desc->im_size);
	  argv[i] = freeptr;
	  pcrel -= 1;		/* Make pcrel 0 in spite of what case 'p':
				   wants.  */
	  /* fall thru */
	case 'p':		/* Displacement - pc relative addressing.  */
	  pcrel += 1;
	  /* fall thru */
	case 'd':		/* Displacement.  */
	  iif.instr_size += suffixP[i] ? suffixP[i] : 4;
	  IIF (12, 2, suffixP[i], (unsigned long) argv[i], 0,
	       pcrel, pcrel_adjust, 1, IND (BRANCH, BYTE), NULL, -1, 0);
	  break;
	case 'H':		/* Sequent-hack: the linker wants a bit set
				   when bsr.  */
	  pcrel = 1;
	  iif.instr_size += suffixP[i] ? suffixP[i] : 4;
	  IIF (12, 2, suffixP[i], (unsigned long) argv[i], 0,
	       pcrel, pcrel_adjust, 1, IND (BRANCH, BYTE), NULL, -1, 1);
	  break;
	case 'q':		/* quick */
	  opcode_bit_ptr -= 4;
	  IIF (11, 2, 42, (unsigned long) argv[i], 0, 0, 0, 0, 0,
	       bit_fix_new (4, opcode_bit_ptr, -8, 7, 0, 1, 0), -1, 0);
	  break;
	case 'r':		/* Register number (3 bits).  */
	  list_search (argv[i], opt6, &tmp);
	  opcode_bit_ptr -= 3;
	  iif.iifP[1].object |= tmp << opcode_bit_ptr;
	  break;
	case 'O':		/* Setcfg instruction optionslist.  */
	  optlist (argv[i], opt3, &tmp);
	  opcode_bit_ptr -= 4;
	  iif.iifP[1].object |= tmp << 15;
	  break;
	case 'C':		/* Cinv instruction optionslist.  */
	  optlist (argv[i], opt4, &tmp);
	  opcode_bit_ptr -= 4;
	  iif.iifP[1].object |= tmp << 15; /* Insert the regtype in opcode.  */
	  break;
	case 'S':		/* String instruction options list.  */
	  optlist (argv[i], opt5, &tmp);
	  opcode_bit_ptr -= 4;
	  iif.iifP[1].object |= tmp << 15;
	  break;
	case 'u':
	case 'U':		/* Register list.  */
	  IIF (10, 1, 1, 0, 0, 0, 0, 0, 0, NULL, -1, 0);
	  switch (operandsP[(i << 1) + 1])
	    {
	    case 'u':		/* Restore, exit.  */
	      optlist (argv[i], opt1, &iif.iifP[10].object);
	      break;
	    case 'U':		/* Save, enter.  */
	      optlist (argv[i], opt2, &iif.iifP[10].object);
	      break;
	    }
	  iif.instr_size += 1;
	  break;
	case 'M':		/* MMU register.  */
	  list_search (argv[i], mmureg, &tmp);
	  opcode_bit_ptr -= 4;
	  iif.iifP[1].object |= tmp << opcode_bit_ptr;
	  break;
	case 'P':		/* CPU register.  */
	  list_search (argv[i], cpureg, &tmp);
	  opcode_bit_ptr -= 4;
	  iif.iifP[1].object |= tmp << opcode_bit_ptr;
	  break;
	case 'g':		/* Inss exts.  */
	  iif.instr_size += 1;	/* 1 byte is allocated after the opcode.  */
	  IIF (10, 2, 1,
	       (unsigned long) argv[i],	/* i always 2 here.  */
	       0, 0, 0, 0, 0,
	       bit_fix_new (3, 5, 0, 7, 0, 0, 0), /* A bit_fix is targeted to
						     the byte.  */
	       -1, 0);
	  break;
	case 'G':
	  IIF (11, 2, 42,
	       (unsigned long) argv[i],	/* i always 3 here.  */
	       0, 0, 0, 0, 0,
	       bit_fix_new (5, 0, 1, 32, -1, 0, -1), -1, 0);
	  break;
	case 'i':
	  iif.instr_size += 1;
	  b = 2 + i;		/* Put the extension byte after opcode.  */
	  IIF (b, 2, 1, 0, 0, 0, 0, 0, 0, 0, -1, 0);
	  break;
	default:
	  as_fatal (_("Bad opcode-table-option, check in file ns32k-opcode.h"));
	}
    }
}

/* in:  instruction line
   out: internal structure of instruction
   that has been prepared for direct conversion to fragment(s) and
   fixes in a systematical fashion
   Return-value = recursive_level.  */
/* Build iif of one assembly text line.  */

static int
parse (const char *line, int recursive_level)
{
  const char *lineptr;
  char c, suffix_separator;
  int i;
  unsigned int argc;
  int arg_type;
  char sqr, sep;
  char suffix[MAX_ARGS], *argv[MAX_ARGS];	/* No more than 4 operands.  */

  if (recursive_level <= 0)
    {
      /* Called from md_assemble.  */
      for (lineptr = line; (*lineptr) != '\0' && (*lineptr) != ' '; lineptr++)
	continue;

      c = *lineptr;
      *(char *) lineptr = '\0';

      if (!(desc = (struct ns32k_opcode *) hash_find (inst_hash_handle, line)))
	as_fatal (_("No such opcode"));

      *(char *) lineptr = c;
    }
  else
    lineptr = line;

  argc = 0;

  if (*desc->operands)
    {
      if (*lineptr++ != '\0')
	{
	  sqr = '[';
	  sep = ',';

	  while (*lineptr != '\0')
	    {
	      if (desc->operands[argc << 1])
		{
		  suffix[argc] = 0;
		  arg_type = desc->operands[(argc << 1) + 1];

		  switch (arg_type)
		    {
		    case 'd':
		    case 'b':
		    case 'p':
		    case 'H':
		      /* The operand is supposed to be a displacement.  */
		      /* Hackwarning: do not forget to update the 4
                         cases above when editing ns32k-opcode.h.  */
		      suffix_separator = ':';
		      break;
		    default:
		      /* If this char occurs we loose.  */
		      suffix_separator = '\255';
		      break;
		    }

		  suffix[argc] = 0; /* 0 when no ':' is encountered.  */
		  argv[argc] = freeptr;
		  *freeptr = '\0';

		  while ((c = *lineptr) != '\0' && c != sep)
		    {
		      if (c == sqr)
			{
			  if (sqr == '[')
			    {
			      sqr = ']';
			      sep = '\0';
			    }
			  else
			    {
			      sqr = '[';
			      sep = ',';
			    }
			}

		      if (c == suffix_separator)
			{
			  /* ':' - label/suffix separator.  */
			  switch (lineptr[1])
			    {
			    case 'b':
			      suffix[argc] = 1;
			      break;
			    case 'w':
			      suffix[argc] = 2;
			      break;
			    case 'd':
			      suffix[argc] = 4;
			      break;
			    default:
			      as_warn (_("Bad suffix, defaulting to d"));
			      suffix[argc] = 4;
			      if (lineptr[1] == '\0' || lineptr[1] == sep)
				{
				  lineptr += 1;
				  continue;
				}
			      break;
			    }

			  lineptr += 2;
			  continue;
			}

		      *freeptr++ = c;
		      lineptr++;
		    }

		  *freeptr++ = '\0';
		  argc += 1;

		  if (*lineptr == '\0')
		    continue;

		  lineptr += 1;
		}
	      else
		as_fatal (_("Too many operands passed to instruction"));
	    }
	}
    }

  if (argc != strlen (desc->operands) / 2)
    {
      if (strlen (desc->default_args))
	{
	  /* We can apply default, don't goof.  */
	  if (parse (desc->default_args, 1) != 1)
	    /* Check error in default.  */
	    as_fatal (_("Wrong numbers of operands in default, check ns32k-opcodes.h"));
	}
      else
	as_fatal (_("Wrong number of operands"));
    }

  for (i = 0; i < IIF_ENTRIES; i++)
    /* Mark all entries as void.  */
    iif.iifP[i].type = 0;

  /* Build opcode iif-entry.  */
  iif.instr_size = desc->opcode_size / 8;
  IIF (1, 1, iif.instr_size, desc->opcode_seed, 0, 0, 0, 0, 0, 0, -1, 0);

  /* This call encodes operands to iif format.  */
  if (argc)
    encode_operand (argc, argv, &desc->operands[0],
		    &suffix[0], desc->im_size, desc->opcode_size);

  return recursive_level;
}

#ifdef BFD_ASSEMBLER
/* This functionality should really be in the bfd library.  */

static bfd_reloc_code_real_type
reloc (int size, int pcrel, int type)
{
  int length, index;
  bfd_reloc_code_real_type relocs[] =
  {
    BFD_RELOC_NS32K_IMM_8,
    BFD_RELOC_NS32K_IMM_16,
    BFD_RELOC_NS32K_IMM_32,
    BFD_RELOC_NS32K_IMM_8_PCREL,
    BFD_RELOC_NS32K_IMM_16_PCREL,
    BFD_RELOC_NS32K_IMM_32_PCREL,

    /* ns32k displacements.  */
    BFD_RELOC_NS32K_DISP_8,
    BFD_RELOC_NS32K_DISP_16,
    BFD_RELOC_NS32K_DISP_32,
    BFD_RELOC_NS32K_DISP_8_PCREL,
    BFD_RELOC_NS32K_DISP_16_PCREL,
    BFD_RELOC_NS32K_DISP_32_PCREL,

    /* Normal 2's complement.  */
    BFD_RELOC_8,
    BFD_RELOC_16,
    BFD_RELOC_32,
    BFD_RELOC_8_PCREL,
    BFD_RELOC_16_PCREL,
    BFD_RELOC_32_PCREL
  };

  switch (size)
    {
    case 1:
      length = 0;
      break;
    case 2:
      length = 1;
      break;
    case 4:
      length = 2;
      break;
    default:
      length = -1;
      break;
    }

  index = length + 3 * pcrel + 6 * type;

  if (index >= 0 && (unsigned int) index < sizeof (relocs) / sizeof (relocs[0]))
    return relocs[index];

  if (pcrel)
    as_bad (_("Can not do %d byte pc-relative relocation for storage type %d"),
	    size, type);
  else
    as_bad (_("Can not do %d byte relocation for storage type %d"),
	    size, type);

  return BFD_RELOC_NONE;

}
#endif

static void
fix_new_ns32k (fragS *frag,		/* Which frag? */
	       int where,		/* Where in that frag? */
	       int size,		/* 1, 2  or 4 usually.  */
	       symbolS *add_symbol,	/* X_add_symbol.  */
	       long offset,		/* X_add_number.  */
	       int pcrel,		/* True if PC-relative relocation.  */
	       char im_disp,		/* True if the value to write is a
					   displacement.  */
	       bit_fixS *bit_fixP,	/* Pointer at struct of bit_fix's, ignored if
					   NULL.  */
	       char bsr,		/* Sequent-linker-hack: 1 when relocobject is
					   a bsr.  */
	       fragS *opcode_frag,
	       unsigned int opcode_offset)
{
  fixS *fixP = fix_new (frag, where, size, add_symbol,
			offset, pcrel,
#ifdef BFD_ASSEMBLER
			bit_fixP ? NO_RELOC : reloc (size, pcrel, im_disp)
#else
			NO_RELOC
#endif
			);

  fix_opcode_frag (fixP) = opcode_frag;
  fix_opcode_offset (fixP) = opcode_offset;
  fix_im_disp (fixP) = im_disp;
  fix_bsr (fixP) = bsr;
  fix_bit_fixP (fixP) = bit_fixP;
  /* We have a MD overflow check for displacements.  */
  fixP->fx_no_overflow = (im_disp != 0);
}

static void
fix_new_ns32k_exp (fragS *frag,		/* Which frag? */
		   int where,		/* Where in that frag? */
		   int size,		/* 1, 2  or 4 usually.  */
		   expressionS *exp,	/* Expression.  */
		   int pcrel,		/* True if PC-relative relocation.  */
		   char im_disp,	/* True if the value to write is a
					   displacement.  */
		   bit_fixS *bit_fixP,	/* Pointer at struct of bit_fix's, ignored if
					   NULL.  */
		   char bsr,		/* Sequent-linker-hack: 1 when relocobject is
					   a bsr.  */
		   fragS *opcode_frag,
		   unsigned int opcode_offset)
{
  fixS *fixP = fix_new_exp (frag, where, size, exp, pcrel,
#ifdef BFD_ASSEMBLER
			    bit_fixP ? NO_RELOC : reloc (size, pcrel, im_disp)
#else
			    NO_RELOC
#endif
			    );

  fix_opcode_frag (fixP) = opcode_frag;
  fix_opcode_offset (fixP) = opcode_offset;
  fix_im_disp (fixP) = im_disp;
  fix_bsr (fixP) = bsr;
  fix_bit_fixP (fixP) = bit_fixP;
  /* We have a MD overflow check for displacements.  */
  fixP->fx_no_overflow = (im_disp != 0);
}

/* Convert number to chars in correct order.  */

void
md_number_to_chars (char *buf, valueT value, int nbytes)
{
  number_to_chars_littleendian (buf, value, nbytes);
}

/* This is a variant of md_numbers_to_chars. The reason for its'
   existence is the fact that ns32k uses Huffman coded
   displacements. This implies that the bit order is reversed in
   displacements and that they are prefixed with a size-tag.

   binary: msb -> lsb
   0xxxxxxx				byte
   10xxxxxx xxxxxxxx			word
   11xxxxxx xxxxxxxx xxxxxxxx xxxxxxxx	double word

   This must be taken care of and we do it here!  */

static void
md_number_to_disp (char *buf, long val, int n)
{
  switch (n)
    {
    case 1:
      if (val < -64 || val > 63)
	as_bad (_("value of %ld out of byte displacement range."), val);
      val &= 0x7f;
#ifdef SHOW_NUM
      printf ("%x ", val & 0xff);
#endif
      *buf++ = val;
      break;

    case 2:
      if (val < -8192 || val > 8191)
	as_bad (_("value of %ld out of word displacement range."), val);
      val &= 0x3fff;
      val |= 0x8000;
#ifdef SHOW_NUM
      printf ("%x ", val >> 8 & 0xff);
#endif
      *buf++ = (val >> 8);
#ifdef SHOW_NUM
      printf ("%x ", val & 0xff);
#endif
      *buf++ = val;
      break;

    case 4:
      if (val < -0x20000000 || val >= 0x20000000)
	as_bad (_("value of %ld out of double word displacement range."), val);
      val |= 0xc0000000;
#ifdef SHOW_NUM
      printf ("%x ", val >> 24 & 0xff);
#endif
      *buf++ = (val >> 24);
#ifdef SHOW_NUM
      printf ("%x ", val >> 16 & 0xff);
#endif
      *buf++ = (val >> 16);
#ifdef SHOW_NUM
      printf ("%x ", val >> 8 & 0xff);
#endif
      *buf++ = (val >> 8);
#ifdef SHOW_NUM
      printf ("%x ", val & 0xff);
#endif
      *buf++ = val;
      break;

    default:
      as_fatal (_("Internal logic error.  line %d, file \"%s\""),
		__LINE__, __FILE__);
    }
}

static void
md_number_to_imm (char *buf, long val, int n)
{
  switch (n)
    {
    case 1:
#ifdef SHOW_NUM
      printf ("%x ", val & 0xff);
#endif
      *buf++ = val;
      break;

    case 2:
#ifdef SHOW_NUM
      printf ("%x ", val >> 8 & 0xff);
#endif
      *buf++ = (val >> 8);
#ifdef SHOW_NUM
      printf ("%x ", val & 0xff);
#endif
      *buf++ = val;
      break;

    case 4:
#ifdef SHOW_NUM
      printf ("%x ", val >> 24 & 0xff);
#endif
      *buf++ = (val >> 24);
#ifdef SHOW_NUM
      printf ("%x ", val >> 16 & 0xff);
#endif
      *buf++ = (val >> 16);
#ifdef SHOW_NUM
      printf ("%x ", val >> 8 & 0xff);
#endif
      *buf++ = (val >> 8);
#ifdef SHOW_NUM
      printf ("%x ", val & 0xff);
#endif
      *buf++ = val;
      break;

    default:
      as_fatal (_("Internal logic error. line %d, file \"%s\""),
		__LINE__, __FILE__);
    }
}

/* Fast bitfiddling support.  */
/* Mask used to zero bitfield before oring in the true field.  */

static unsigned long l_mask[] =
{
  0xffffffff, 0xfffffffe, 0xfffffffc, 0xfffffff8,
  0xfffffff0, 0xffffffe0, 0xffffffc0, 0xffffff80,
  0xffffff00, 0xfffffe00, 0xfffffc00, 0xfffff800,
  0xfffff000, 0xffffe000, 0xffffc000, 0xffff8000,
  0xffff0000, 0xfffe0000, 0xfffc0000, 0xfff80000,
  0xfff00000, 0xffe00000, 0xffc00000, 0xff800000,
  0xff000000, 0xfe000000, 0xfc000000, 0xf8000000,
  0xf0000000, 0xe0000000, 0xc0000000, 0x80000000,
};
static unsigned long r_mask[] =
{
  0x00000000, 0x00000001, 0x00000003, 0x00000007,
  0x0000000f, 0x0000001f, 0x0000003f, 0x0000007f,
  0x000000ff, 0x000001ff, 0x000003ff, 0x000007ff,
  0x00000fff, 0x00001fff, 0x00003fff, 0x00007fff,
  0x0000ffff, 0x0001ffff, 0x0003ffff, 0x0007ffff,
  0x000fffff, 0x001fffff, 0x003fffff, 0x007fffff,
  0x00ffffff, 0x01ffffff, 0x03ffffff, 0x07ffffff,
  0x0fffffff, 0x1fffffff, 0x3fffffff, 0x7fffffff,
};
#define MASK_BITS 31
/* Insert bitfield described by field_ptr and val at buf
   This routine is written for modification of the first 4 bytes pointed
   to by buf, to yield speed.
   The ifdef stuff is for selection between a ns32k-dependent routine
   and a general version. (My advice: use the general version!).  */

static void
md_number_to_field (char *buf, long val, bit_fixS *field_ptr)
{
  unsigned long object;
  unsigned long mask;
  /* Define ENDIAN on a ns32k machine.  */
#ifdef ENDIAN
  unsigned long *mem_ptr;
#else
  char *mem_ptr;
#endif

  if (field_ptr->fx_bit_min <= val && val <= field_ptr->fx_bit_max)
    {
#ifdef ENDIAN
      if (field_ptr->fx_bit_base)
	/* Override buf.  */
	mem_ptr = (unsigned long *) field_ptr->fx_bit_base;
      else
	mem_ptr = (unsigned long *) buf;

      mem_ptr = ((unsigned long *)
		 ((char *) mem_ptr + field_ptr->fx_bit_base_adj));
#else
      if (field_ptr->fx_bit_base)
	mem_ptr = (char *) field_ptr->fx_bit_base;
      else
	mem_ptr = buf;

      mem_ptr += field_ptr->fx_bit_base_adj;
#endif
#ifdef ENDIAN
      /* We have a nice ns32k machine with lowbyte at low-physical mem.  */
      object = *mem_ptr;	/* get some bytes */
#else /* OVE Goof! the machine is a m68k or dito.  */
      /* That takes more byte fiddling.  */
      object = 0;
      object |= mem_ptr[3] & 0xff;
      object <<= 8;
      object |= mem_ptr[2] & 0xff;
      object <<= 8;
      object |= mem_ptr[1] & 0xff;
      object <<= 8;
      object |= mem_ptr[0] & 0xff;
#endif
      mask = 0;
      mask |= (r_mask[field_ptr->fx_bit_offset]);
      mask |= (l_mask[field_ptr->fx_bit_offset + field_ptr->fx_bit_size]);
      object &= mask;
      val += field_ptr->fx_bit_add;
      object |= ((val << field_ptr->fx_bit_offset) & (mask ^ 0xffffffff));
#ifdef ENDIAN
      *mem_ptr = object;
#else
      mem_ptr[0] = (char) object;
      object >>= 8;
      mem_ptr[1] = (char) object;
      object >>= 8;
      mem_ptr[2] = (char) object;
      object >>= 8;
      mem_ptr[3] = (char) object;
#endif
    }
  else
    as_bad (_("Bit field out of range"));
}

/* Convert iif to fragments.  From this point we start to dribble with
   functions in other files than this one.(Except hash.c) So, if it's
   possible to make an iif for an other CPU, you don't need to know
   what frags, relax, obstacks, etc is in order to port this
   assembler. You only need to know if it's possible to reduce your
   cpu-instruction to iif-format (takes some work) and adopt the other
   md_? parts according to given instructions Note that iif was
   invented for the clean ns32k`s architecture.  */

/* GAS for the ns32k has a problem. PC relative displacements are
   relative to the address of the opcode, not the address of the
   operand. We used to keep track of the offset between the operand
   and the opcode in pcrel_adjust for each frag and each fix. However,
   we get into trouble where there are two or more pc-relative
   operands and the size of the first one can't be determined. Then in
   the relax phase, the size of the first operand will change and
   pcrel_adjust will no longer be correct.  The current solution is
   keep a pointer to the frag with the opcode in it and the offset in
   that frag for each frag and each fix. Then, when needed, we can
   always figure out how far it is between the opcode and the pcrel
   object.  See also md_pcrel_adjust and md_fix_pcrel_adjust.  For
   objects not part of an instruction, the pointer to the opcode frag
   is always zero.  */

static void
convert_iif (void)
{
  int i;
  bit_fixS *j;
  fragS *inst_frag;
  unsigned int inst_offset;
  char *inst_opcode;
  char *memP;
  int l;
  int k;
  char type;
  char size = 0;

  frag_grow (iif.instr_size);	/* This is important.  */
  memP = frag_more (0);
  inst_opcode = memP;
  inst_offset = (memP - frag_now->fr_literal);
  inst_frag = frag_now;

  for (i = 0; i < IIF_ENTRIES; i++)
    {
      if ((type = iif.iifP[i].type))
	{
	  /* The object exist, so handle it.  */
	  switch (size = iif.iifP[i].size)
	    {
	    case 42:
	      size = 0;
	      /* It's a bitfix that operates on an existing object.  */
	      if (iif.iifP[i].bit_fixP->fx_bit_base)
		/* Expand fx_bit_base to point at opcode.  */
		iif.iifP[i].bit_fixP->fx_bit_base = (long) inst_opcode;
	      /* Fall through.  */

	    case 8:		/* bignum or doublefloat.  */
	    case 1:
	    case 2:
	    case 3:
	    case 4:
	      /* The final size in objectmemory is known.  */
	      memP = frag_more (size);
	      j = iif.iifP[i].bit_fixP;

	      switch (type)
		{
		case 1:	/* The object is pure binary.  */
		  if (j)
		    md_number_to_field (memP, exprP.X_add_number, j);

		  else if (iif.iifP[i].pcrel)
		    fix_new_ns32k (frag_now,
				   (long) (memP - frag_now->fr_literal),
				   size,
				   0,
				   iif.iifP[i].object,
				   iif.iifP[i].pcrel,
				   iif.iifP[i].im_disp,
				   0,
				   iif.iifP[i].bsr,	/* Sequent hack.  */
				   inst_frag, inst_offset);
		  else
		    {
		      /* Good, just put them bytes out.  */
		      switch (iif.iifP[i].im_disp)
			{
			case 0:
			  md_number_to_chars (memP, iif.iifP[i].object, size);
			  break;
			case 1:
			  md_number_to_disp (memP, iif.iifP[i].object, size);
			  break;
			default:
			  as_fatal (_("iif convert internal pcrel/binary"));
			}
		    }
		  break;

		case 2:
		  /* The object is a pointer at an expression, so
                     unpack it, note that bignums may result from the
                     expression.  */
		  evaluate_expr (&exprP, (char *) iif.iifP[i].object);
		  if (exprP.X_op == O_big || size == 8)
		    {
		      if ((k = exprP.X_add_number) > 0)
			{
			  /* We have a bignum ie a quad. This can only
                             happens in a long suffixed instruction.  */
			  if (k * 2 > size)
			    as_bad (_("Bignum too big for long"));

			  if (k == 3)
			    memP += 2;

			  for (l = 0; k > 0; k--, l += 2)
			    md_number_to_chars (memP + l,
						generic_bignum[l >> 1],
						sizeof (LITTLENUM_TYPE));
			}
		      else
			{
			  /* flonum.  */
			  LITTLENUM_TYPE words[4];

			  switch (size)
			    {
			    case 4:
			      gen_to_words (words, 2, 8);
			      md_number_to_imm (memP, (long) words[0],
						sizeof (LITTLENUM_TYPE));
			      md_number_to_imm (memP + sizeof (LITTLENUM_TYPE),
						(long) words[1],
						sizeof (LITTLENUM_TYPE));
			      break;
			    case 8:
			      gen_to_words (words, 4, 11);
			      md_number_to_imm (memP, (long) words[0],
						sizeof (LITTLENUM_TYPE));
			      md_number_to_imm (memP + sizeof (LITTLENUM_TYPE),
						(long) words[1],
						sizeof (LITTLENUM_TYPE));
			      md_number_to_imm ((memP + 2
						 * sizeof (LITTLENUM_TYPE)),
						(long) words[2],
						sizeof (LITTLENUM_TYPE));
			      md_number_to_imm ((memP + 3
						 * sizeof (LITTLENUM_TYPE)),
						(long) words[3],
						sizeof (LITTLENUM_TYPE));
			      break;
			    }
			}
		      break;
		    }
		  if (exprP.X_add_symbol ||
		      exprP.X_op_symbol ||
		      iif.iifP[i].pcrel)
		    {
		      /* The expression was undefined due to an
                         undefined label. Create a fix so we can fix
                         the object later.  */
		      exprP.X_add_number += iif.iifP[i].object_adjust;
		      fix_new_ns32k_exp (frag_now,
					 (long) (memP - frag_now->fr_literal),
					 size,
					 &exprP,
					 iif.iifP[i].pcrel,
					 iif.iifP[i].im_disp,
					 j,
					 iif.iifP[i].bsr,
					 inst_frag, inst_offset);
		    }
		  else if (j)
		    md_number_to_field (memP, exprP.X_add_number, j);
		  else
		    {
		      /* Good, just put them bytes out.  */
		      switch (iif.iifP[i].im_disp)
			{
			case 0:
			  md_number_to_imm (memP, exprP.X_add_number, size);
			  break;
			case 1:
			  md_number_to_disp (memP, exprP.X_add_number, size);
			  break;
			default:
			  as_fatal (_("iif convert internal pcrel/pointer"));
			}
		    }
		  break;
		default:
		  as_fatal (_("Internal logic error in iif.iifP[n].type"));
		}
	      break;

	    case 0:
	      /* Too bad, the object may be undefined as far as its
		 final nsize in object memory is concerned.  The size
		 of the object in objectmemory is not explicitly
		 given.  If the object is defined its length can be
		 determined and a fix can replace the frag.  */
	      {
		evaluate_expr (&exprP, (char *) iif.iifP[i].object);

		if ((exprP.X_add_symbol || exprP.X_op_symbol) &&
		    !iif.iifP[i].pcrel)
		  {
		    /* Size is unknown until link time so have to default.  */
		    size = default_disp_size; /* Normally 4 bytes.  */
		    memP = frag_more (size);
		    fix_new_ns32k_exp (frag_now,
				       (long) (memP - frag_now->fr_literal),
				       size,
				       &exprP,
				       0, /* never iif.iifP[i].pcrel, */
				       1, /* always iif.iifP[i].im_disp */
				       (bit_fixS *) 0, 0,
				       inst_frag,
				       inst_offset);
		    break;		/* Exit this absolute hack.  */
		  }

		if (exprP.X_add_symbol || exprP.X_op_symbol)
		  {
		    /* Frag it.  */
		    if (exprP.X_op_symbol)
		      /* We cant relax this case.  */
		      as_fatal (_("Can't relax difference"));
		    else
		      {
			/* Size is not important.  This gets fixed by
			   relax, but we assume 0 in what follows.  */
			memP = frag_more (4); /* Max size.  */
			size = 0;

			{
			  fragS *old_frag = frag_now;
			  frag_variant (rs_machine_dependent,
					4, /* Max size.  */
					0, /* Size.  */
					IND (BRANCH, UNDEF), /* Expecting
                                                                the worst.  */
					exprP.X_add_symbol,
					exprP.X_add_number,
					inst_opcode);
			  frag_opcode_frag (old_frag) = inst_frag;
			  frag_opcode_offset (old_frag) = inst_offset;
			  frag_bsr (old_frag) = iif.iifP[i].bsr;
			}
		      }
		  }
		else
		  {
		    /* This duplicates code in md_number_to_disp.  */
		    if (-64 <= exprP.X_add_number && exprP.X_add_number <= 63)
		      size = 1;
		    else
		      {
			if (-8192 <= exprP.X_add_number
			    && exprP.X_add_number <= 8191)
			  size = 2;
			else
			  {
			    if (-0x20000000 <= exprP.X_add_number
				&& exprP.X_add_number<=0x1fffffff)
			      size = 4;
			    else
			      {
				as_bad (_("Displacement to large for :d"));
				size = 4;
			      }
			  }
		      }

		    memP = frag_more (size);
		    md_number_to_disp (memP, exprP.X_add_number, size);
		  }
	      }
	      break;

	    default:
	      as_fatal (_("Internal logic error in iif.iifP[].type"));
	    }
	}
    }
}

void
md_assemble (char *line)
{
  freeptr = freeptr_static;
  parse (line, 0);		/* Explode line to more fix form in iif.  */
  convert_iif ();		/* Convert iif to frags, fix's etc.  */
#ifdef SHOW_NUM
  printf (" \t\t\t%s\n", line);
#endif
}

void
md_begin (void)
{
  /* Build a hashtable of the instructions.  */
  const struct ns32k_opcode *ptr;
  const char *stat;
  const struct ns32k_opcode *endop;

  inst_hash_handle = hash_new ();

  endop = ns32k_opcodes + sizeof (ns32k_opcodes) / sizeof (ns32k_opcodes[0]);
  for (ptr = ns32k_opcodes; ptr < endop; ptr++)
    {
      if ((stat = hash_insert (inst_hash_handle, ptr->name, (char *) ptr)))
	/* Fatal.  */
	as_fatal (_("Can't hash %s: %s"), ptr->name, stat);
    }

  /* Some private space please!  */
  freeptr_static = (char *) malloc (PRIVATE_SIZE);
}

/* Must be equal to MAX_PRECISON in atof-ieee.c.  */
#define MAX_LITTLENUMS 6

/* Turn the string pointed to by litP into a floating point constant
   of type TYPE, and emit the appropriate bytes.  The number of
   LITTLENUMS emitted is stored in *SIZEP.  An error message is
   returned, or NULL on OK.  */

char *
md_atof (int type, char *litP, int *sizeP)
{
  int prec;
  LITTLENUM_TYPE words[MAX_LITTLENUMS];
  LITTLENUM_TYPE *wordP;
  char *t;

  switch (type)
    {
    case 'f':
      prec = 2;
      break;

    case 'd':
      prec = 4;
      break;
    default:
      *sizeP = 0;
      return _("Bad call to MD_ATOF()");
    }

  t = atof_ieee (input_line_pointer, type, words);
  if (t)
    input_line_pointer = t;

  *sizeP = prec * sizeof (LITTLENUM_TYPE);

  for (wordP = words + prec; prec--;)
    {
      md_number_to_chars (litP, (long) (*--wordP), sizeof (LITTLENUM_TYPE));
      litP += sizeof (LITTLENUM_TYPE);
    }

  return 0;
}

int
md_pcrel_adjust (fragS *fragP)
{
  fragS *opcode_frag;
  addressT opcode_address;
  unsigned int offset;

  opcode_frag = frag_opcode_frag (fragP);
  if (opcode_frag == 0)
    return 0;

  offset = frag_opcode_offset (fragP);
  opcode_address = offset + opcode_frag->fr_address;

  return fragP->fr_address + fragP->fr_fix - opcode_address;
}

static int
md_fix_pcrel_adjust (fixS *fixP)
{
  fragS *opcode_frag;
  addressT opcode_address;
  unsigned int offset;

  opcode_frag = fix_opcode_frag (fixP);
  if (opcode_frag == 0)
    return 0;

  offset = fix_opcode_offset (fixP);
  opcode_address = offset + opcode_frag->fr_address;

  return fixP->fx_where + fixP->fx_frag->fr_address - opcode_address;
}

/* Apply a fixS (fixup of an instruction or data that we didn't have
   enough info to complete immediately) to the data in a frag.

   On the ns32k, everything is in a different format, so we have broken
   out separate functions for each kind of thing we could be fixing.
   They all get called from here.  */

void
md_apply_fix3 (fixS *fixP, valueT * valP, segT seg ATTRIBUTE_UNUSED)
{
  long val = * (long *) valP;
  char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;

  if (fix_bit_fixP (fixP))
    /* Bitfields to fix, sigh.  */
    md_number_to_field (buf, val, fix_bit_fixP (fixP));
  else switch (fix_im_disp (fixP))
    {
    case 0:
      /* Immediate field.  */
      md_number_to_imm (buf, val, fixP->fx_size);
      break;

    case 1:
      /* Displacement field.  */
      /* Calculate offset.  */
      md_number_to_disp (buf,
			 (fixP->fx_pcrel ? val + md_fix_pcrel_adjust (fixP)
			  : val), fixP->fx_size);
      break;

    case 2:
      /* Pointer in a data object.  */
      md_number_to_chars (buf, val, fixP->fx_size);
      break;
    }

  if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
    fixP->fx_done = 1;
}

/* Convert a relaxed displacement to ditto in final output.  */

#ifndef BFD_ASSEMBLER
void
md_convert_frag (object_headers *headers,
		 segT sec,
		 fragS *fragP)
#else
void
md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
		 segT sec ATTRIBUTE_UNUSED,
		 fragS *fragP)
#endif
{
  long disp;
  long ext = 0;
  /* Address in gas core of the place to store the displacement.  */
  char *buffer_address = fragP->fr_fix + fragP->fr_literal;
  /* Address in object code of the displacement.  */
  int object_address;

  switch (fragP->fr_subtype)
    {
    case IND (BRANCH, BYTE):
      ext = 1;
      break;
    case IND (BRANCH, WORD):
      ext = 2;
      break;
    case IND (BRANCH, DOUBLE):
      ext = 4;
      break;
    }

  if (ext == 0)
    return;

  know (fragP->fr_symbol);

  object_address = fragP->fr_fix + fragP->fr_address;

  /* The displacement of the address, from current location.  */
  disp = (S_GET_VALUE (fragP->fr_symbol) + fragP->fr_offset) - object_address;
  disp += md_pcrel_adjust (fragP);

  md_number_to_disp (buffer_address, (long) disp, (int) ext);
  fragP->fr_fix += ext;
}

/* This function returns the estimated size a variable object will occupy,
   one can say that we tries to guess the size of the objects before we
   actually know it.  */

int
md_estimate_size_before_relax (fragS *fragP, segT segment)
{
  if (fragP->fr_subtype == IND (BRANCH, UNDEF))
    {
      if (S_GET_SEGMENT (fragP->fr_symbol) != segment)
	{
	  /* We don't relax symbols defined in another segment.  The
	     thing to do is to assume the object will occupy 4 bytes.  */
	  fix_new_ns32k (fragP,
			 (int) (fragP->fr_fix),
			 4,
			 fragP->fr_symbol,
			 fragP->fr_offset,
			 1,
			 1,
			 0,
			 frag_bsr(fragP), /* Sequent hack.  */
			 frag_opcode_frag (fragP),
			 frag_opcode_offset (fragP));
	  fragP->fr_fix += 4;
	  frag_wane (fragP);
	  return 4;
	}

      /* Relaxable case.  Set up the initial guess for the variable
	 part of the frag.  */
      fragP->fr_subtype = IND (BRANCH, BYTE);
    }

  if (fragP->fr_subtype >= sizeof (md_relax_table) / sizeof (md_relax_table[0]))
    abort ();

  /* Return the size of the variable part of the frag.  */
  return md_relax_table[fragP->fr_subtype].rlx_length;
}

int md_short_jump_size = 3;
int md_long_jump_size = 5;
const int md_reloc_size = 8;	/* Size of relocation record.  */

void
md_create_short_jump (char *ptr,
		      addressT from_addr,
		      addressT to_addr,
		      fragS *frag ATTRIBUTE_UNUSED,
		      symbolS *to_symbol ATTRIBUTE_UNUSED)
{
  valueT offset;

  offset = to_addr - from_addr;
  md_number_to_chars (ptr, (valueT) 0xEA, 1);
  md_number_to_disp (ptr + 1, (valueT) offset, 2);
}

void
md_create_long_jump (char *ptr,
		     addressT from_addr,
		     addressT to_addr,
		     fragS *frag ATTRIBUTE_UNUSED,
		     symbolS *to_symbol ATTRIBUTE_UNUSED)
{
  valueT offset;

  offset = to_addr - from_addr;
  md_number_to_chars (ptr, (valueT) 0xEA, 1);
  md_number_to_disp (ptr + 1, (valueT) offset, 4);
}

const char *md_shortopts = "m:";

struct option md_longopts[] =
{
#define OPTION_DISP_SIZE (OPTION_MD_BASE)
  {"disp-size-default", required_argument , NULL, OPTION_DISP_SIZE},
  {NULL, no_argument, NULL, 0}
};

size_t md_longopts_size = sizeof (md_longopts);

int
md_parse_option (int c, char *arg)
{
  switch (c)
    {
    case 'm':
      if (!strcmp (arg, "32032"))
	{
	  cpureg = cpureg_032;
	  mmureg = mmureg_032;
	}
      else if (!strcmp (arg, "32532"))
	{
	  cpureg = cpureg_532;
	  mmureg = mmureg_532;
	}
      else
	{
	  as_warn (_("invalid architecture option -m%s, ignored"), arg);
	  return 0;
	}
      break;
    case OPTION_DISP_SIZE:
      {
	int size = atoi(arg);
	switch (size)
	  {
	  case 1: case 2: case 4:
	    default_disp_size = size;
	    break;
	  default:
	    as_warn (_("invalid default displacement size \"%s\". Defaulting to %d."),
		     arg, default_disp_size);
	  }
	break;
      }

    default:
      return 0;
    }

  return 1;
}

void
md_show_usage (FILE *stream)
{
  fprintf (stream, _("\
NS32K options:\n\
-m32032 | -m32532	select variant of NS32K architecture\n\
--disp-size-default=<1|2|4>\n"));
}

/* This is TC_CONS_FIX_NEW, called by emit_expr in read.c.  */

void
cons_fix_new_ns32k (fragS *frag,	/* Which frag? */
		    int where,		/* Where in that frag? */
		    int size,		/* 1, 2  or 4 usually.  */
		    expressionS *exp)	/* Expression.  */
{
  fix_new_ns32k_exp (frag, where, size, exp,
		     0, 2, 0, 0, 0, 0);
}

/* We have no need to default values of symbols.  */

symbolS *
md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
{
  return 0;
}

/* Round up a section size to the appropriate boundary.  */

valueT
md_section_align (segT segment ATTRIBUTE_UNUSED, valueT size)
{
  return size;			/* Byte alignment is fine.  */
}

/* Exactly what point is a PC-relative offset relative TO?  On the
   ns32k, they're relative to the start of the instruction.  */

long
md_pcrel_from (fixS *fixP)
{
  long res;

  res = fixP->fx_where + fixP->fx_frag->fr_address;
#ifdef SEQUENT_COMPATABILITY
  if (frag_bsr (fixP->fx_frag))
    res += 0x12			/* FOO Kludge alert!  */
#endif
      return res;
}

#ifdef BFD_ASSEMBLER

arelent *
tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp)
{
  arelent *rel;
  bfd_reloc_code_real_type code;

  code = reloc (fixp->fx_size, fixp->fx_pcrel, fix_im_disp (fixp));

  rel = xmalloc (sizeof (arelent));
  rel->sym_ptr_ptr = xmalloc (sizeof (asymbol *));
  *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
  rel->address = fixp->fx_frag->fr_address + fixp->fx_where;
  if (fixp->fx_pcrel)
    rel->addend = fixp->fx_addnumber;
  else
    rel->addend = 0;

  rel->howto = bfd_reloc_type_lookup (stdoutput, code);
  if (!rel->howto)
    {
      const char *name;

      name = S_GET_NAME (fixp->fx_addsy);
      if (name == NULL)
	name = _("<unknown>");
      as_fatal (_("Cannot find relocation type for symbol %s, code %d"),
		name, (int) code);
    }

  return rel;
}
#else /* BFD_ASSEMBLER */

#ifdef OBJ_AOUT
void
cons_fix_new_ns32k (char *where,
		    struct fix *fixP,
		    relax_addressT segment_address_in_file)
{
  /* In:  Length of relocation (or of address) in chars: 1, 2 or 4.
     Out: GNU LD relocation length code: 0, 1, or 2.  */

  static unsigned char nbytes_r_length[] = { 42, 0, 1, 42, 2 };
  long r_symbolnum;

  know (fixP->fx_addsy != NULL);

  md_number_to_chars (where,
       fixP->fx_frag->fr_address + fixP->fx_where - segment_address_in_file,
		      4);

  r_symbolnum = (S_IS_DEFINED (fixP->fx_addsy)
		 ? S_GET_TYPE (fixP->fx_addsy)
		 : fixP->fx_addsy->sy_number);

  md_number_to_chars (where + 4,
		      ((long) (r_symbolnum)
		       | (long) (fixP->fx_pcrel << 24)
		       | (long) (nbytes_r_length[fixP->fx_size] << 25)
		       | (long) ((!S_IS_DEFINED (fixP->fx_addsy)) << 27)
		       | (long) (fix_bsr (fixP) << 28)
		       | (long) (fix_im_disp (fixP) << 29)),
		      4);
}

#endif /* OBJ_AOUT */
#endif /* BFD_ASSEMBLER */