aboutsummaryrefslogtreecommitdiff
path: root/opcodes/or1k-ibld.c
blob: b934ce1b9fcd25796e1baf872025f9b2d566e74a (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
/* Instruction building/extraction support for or1k. -*- C -*-

   THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator.
   - the resultant file is machine generated, cgen-ibld.in isn't

   Copyright (C) 1996-2016 Free Software Foundation, Inc.

   This file is part of libopcodes.

   This library is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3, or (at your option)
   any later version.

   It 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.,
   51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */

/* ??? Eventually more and more of this stuff can go to cpu-independent files.
   Keep that in mind.  */

#include "sysdep.h"
#include <stdio.h>
#include "ansidecl.h"
#include "dis-asm.h"
#include "bfd.h"
#include "symcat.h"
#include "or1k-desc.h"
#include "or1k-opc.h"
#include "cgen/basic-modes.h"
#include "opintl.h"
#include "safe-ctype.h"

#undef  min
#define min(a,b) ((a) < (b) ? (a) : (b))
#undef  max
#define max(a,b) ((a) > (b) ? (a) : (b))

/* Used by the ifield rtx function.  */
#define FLD(f) (fields->f)

static const char * insert_normal
  (CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int,
   unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR);
static const char * insert_insn_normal
  (CGEN_CPU_DESC, const CGEN_INSN *,
   CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
static int extract_normal
  (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT,
   unsigned int, unsigned int, unsigned int, unsigned int,
   unsigned int, unsigned int, bfd_vma, long *);
static int extract_insn_normal
  (CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *,
   CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
#if CGEN_INT_INSN_P
static void put_insn_int_value
  (CGEN_CPU_DESC, CGEN_INSN_BYTES_PTR, int, int, CGEN_INSN_INT);
#endif
#if ! CGEN_INT_INSN_P
static CGEN_INLINE void insert_1
  (CGEN_CPU_DESC, unsigned long, int, int, int, unsigned char *);
static CGEN_INLINE int fill_cache
  (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *,  int, int, bfd_vma);
static CGEN_INLINE long extract_1
  (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, int, unsigned char *, bfd_vma);
#endif

/* Operand insertion.  */

#if ! CGEN_INT_INSN_P

/* Subroutine of insert_normal.  */

static CGEN_INLINE void
insert_1 (CGEN_CPU_DESC cd,
	  unsigned long value,
	  int start,
	  int length,
	  int word_length,
	  unsigned char *bufp)
{
  unsigned long x,mask;
  int shift;

  x = cgen_get_insn_value (cd, bufp, word_length);

  /* Written this way to avoid undefined behaviour.  */
  mask = (((1L << (length - 1)) - 1) << 1) | 1;
  if (CGEN_INSN_LSB0_P)
    shift = (start + 1) - length;
  else
    shift = (word_length - (start + length));
  x = (x & ~(mask << shift)) | ((value & mask) << shift);

  cgen_put_insn_value (cd, bufp, word_length, (bfd_vma) x);
}

#endif /* ! CGEN_INT_INSN_P */

/* Default insertion routine.

   ATTRS is a mask of the boolean attributes.
   WORD_OFFSET is the offset in bits from the start of the insn of the value.
   WORD_LENGTH is the length of the word in bits in which the value resides.
   START is the starting bit number in the word, architecture origin.
   LENGTH is the length of VALUE in bits.
   TOTAL_LENGTH is the total length of the insn in bits.

   The result is an error message or NULL if success.  */

/* ??? This duplicates functionality with bfd's howto table and
   bfd_install_relocation.  */
/* ??? This doesn't handle bfd_vma's.  Create another function when
   necessary.  */

static const char *
insert_normal (CGEN_CPU_DESC cd,
	       long value,
	       unsigned int attrs,
	       unsigned int word_offset,
	       unsigned int start,
	       unsigned int length,
	       unsigned int word_length,
	       unsigned int total_length,
	       CGEN_INSN_BYTES_PTR buffer)
{
  static char errbuf[100];
  /* Written this way to avoid undefined behaviour.  */
  unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1;

  /* If LENGTH is zero, this operand doesn't contribute to the value.  */
  if (length == 0)
    return NULL;

  if (word_length > 8 * sizeof (CGEN_INSN_INT))
    abort ();

  /* For architectures with insns smaller than the base-insn-bitsize,
     word_length may be too big.  */
  if (cd->min_insn_bitsize < cd->base_insn_bitsize)
    {
      if (word_offset == 0
	  && word_length > total_length)
	word_length = total_length;
    }

  /* Ensure VALUE will fit.  */
  if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGN_OPT))
    {
      long minval = - (1L << (length - 1));
      unsigned long maxval = mask;

      if ((value > 0 && (unsigned long) value > maxval)
	  || value < minval)
	{
	  /* xgettext:c-format */
	  sprintf (errbuf,
		   _("operand out of range (%ld not between %ld and %lu)"),
		   value, minval, maxval);
	  return errbuf;
	}
    }
  else if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED))
    {
      unsigned long maxval = mask;
      unsigned long val = (unsigned long) value;

      /* For hosts with a word size > 32 check to see if value has been sign
	 extended beyond 32 bits.  If so then ignore these higher sign bits
	 as the user is attempting to store a 32-bit signed value into an
	 unsigned 32-bit field which is allowed.  */
      if (sizeof (unsigned long) > 4 && ((value >> 32) == -1))
	val &= 0xFFFFFFFF;

      if (val > maxval)
	{
	  /* xgettext:c-format */
	  sprintf (errbuf,
		   _("operand out of range (0x%lx not between 0 and 0x%lx)"),
		   val, maxval);
	  return errbuf;
	}
    }
  else
    {
      if (! cgen_signed_overflow_ok_p (cd))
	{
	  long minval = - (1L << (length - 1));
	  long maxval =   (1L << (length - 1)) - 1;

	  if (value < minval || value > maxval)
	    {
	      sprintf
		/* xgettext:c-format */
		(errbuf, _("operand out of range (%ld not between %ld and %ld)"),
		 value, minval, maxval);
	      return errbuf;
	    }
	}
    }

#if CGEN_INT_INSN_P

  {
    int shift_within_word, shift_to_word, shift;

    /* How to shift the value to BIT0 of the word.  */
    shift_to_word = total_length - (word_offset + word_length);

    /* How to shift the value to the field within the word.  */
    if (CGEN_INSN_LSB0_P)
      shift_within_word = start + 1 - length;
    else
      shift_within_word = word_length - start - length;

    /* The total SHIFT, then mask in the value.  */
    shift = shift_to_word + shift_within_word;
    *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);
  }

#else /* ! CGEN_INT_INSN_P */

  {
    unsigned char *bufp = (unsigned char *) buffer + word_offset / 8;

    insert_1 (cd, value, start, length, word_length, bufp);
  }

#endif /* ! CGEN_INT_INSN_P */

  return NULL;
}

/* Default insn builder (insert handler).
   The instruction is recorded in CGEN_INT_INSN_P byte order (meaning
   that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is
   recorded in host byte order, otherwise BUFFER is an array of bytes
   and the value is recorded in target byte order).
   The result is an error message or NULL if success.  */

static const char *
insert_insn_normal (CGEN_CPU_DESC cd,
		    const CGEN_INSN * insn,
		    CGEN_FIELDS * fields,
		    CGEN_INSN_BYTES_PTR buffer,
		    bfd_vma pc)
{
  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
  unsigned long value;
  const CGEN_SYNTAX_CHAR_TYPE * syn;

  CGEN_INIT_INSERT (cd);
  value = CGEN_INSN_BASE_VALUE (insn);

  /* If we're recording insns as numbers (rather than a string of bytes),
     target byte order handling is deferred until later.  */

#if CGEN_INT_INSN_P

  put_insn_int_value (cd, buffer, cd->base_insn_bitsize,
		      CGEN_FIELDS_BITSIZE (fields), value);

#else

  cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize,
					(unsigned) CGEN_FIELDS_BITSIZE (fields)),
		       value);

#endif /* ! CGEN_INT_INSN_P */

  /* ??? It would be better to scan the format's fields.
     Still need to be able to insert a value based on the operand though;
     e.g. storing a branch displacement that got resolved later.
     Needs more thought first.  */

  for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn)
    {
      const char *errmsg;

      if (CGEN_SYNTAX_CHAR_P (* syn))
	continue;

      errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
				       fields, buffer, pc);
      if (errmsg)
	return errmsg;
    }

  return NULL;
}

#if CGEN_INT_INSN_P
/* Cover function to store an insn value into an integral insn.  Must go here
   because it needs <prefix>-desc.h for CGEN_INT_INSN_P.  */

static void
put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
		    CGEN_INSN_BYTES_PTR buf,
		    int length,
		    int insn_length,
		    CGEN_INSN_INT value)
{
  /* For architectures with insns smaller than the base-insn-bitsize,
     length may be too big.  */
  if (length > insn_length)
    *buf = value;
  else
    {
      int shift = insn_length - length;
      /* Written this way to avoid undefined behaviour.  */
      CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;

      *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift);
    }
}
#endif

/* Operand extraction.  */

#if ! CGEN_INT_INSN_P

/* Subroutine of extract_normal.
   Ensure sufficient bytes are cached in EX_INFO.
   OFFSET is the offset in bytes from the start of the insn of the value.
   BYTES is the length of the needed value.
   Returns 1 for success, 0 for failure.  */

static CGEN_INLINE int
fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
	    CGEN_EXTRACT_INFO *ex_info,
	    int offset,
	    int bytes,
	    bfd_vma pc)
{
  /* It's doubtful that the middle part has already been fetched so
     we don't optimize that case.  kiss.  */
  unsigned int mask;
  disassemble_info *info = (disassemble_info *) ex_info->dis_info;

  /* First do a quick check.  */
  mask = (1 << bytes) - 1;
  if (((ex_info->valid >> offset) & mask) == mask)
    return 1;

  /* Search for the first byte we need to read.  */
  for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1)
    if (! (mask & ex_info->valid))
      break;

  if (bytes)
    {
      int status;

      pc += offset;
      status = (*info->read_memory_func)
	(pc, ex_info->insn_bytes + offset, bytes, info);

      if (status != 0)
	{
	  (*info->memory_error_func) (status, pc, info);
	  return 0;
	}

      ex_info->valid |= ((1 << bytes) - 1) << offset;
    }

  return 1;
}

/* Subroutine of extract_normal.  */

static CGEN_INLINE long
extract_1 (CGEN_CPU_DESC cd,
	   CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
	   int start,
	   int length,
	   int word_length,
	   unsigned char *bufp,
	   bfd_vma pc ATTRIBUTE_UNUSED)
{
  unsigned long x;
  int shift;

  x = cgen_get_insn_value (cd, bufp, word_length);

  if (CGEN_INSN_LSB0_P)
    shift = (start + 1) - length;
  else
    shift = (word_length - (start + length));
  return x >> shift;
}

#endif /* ! CGEN_INT_INSN_P */

/* Default extraction routine.

   INSN_VALUE is the first base_insn_bitsize bits of the insn in host order,
   or sometimes less for cases like the m32r where the base insn size is 32
   but some insns are 16 bits.
   ATTRS is a mask of the boolean attributes.  We only need `SIGNED',
   but for generality we take a bitmask of all of them.
   WORD_OFFSET is the offset in bits from the start of the insn of the value.
   WORD_LENGTH is the length of the word in bits in which the value resides.
   START is the starting bit number in the word, architecture origin.
   LENGTH is the length of VALUE in bits.
   TOTAL_LENGTH is the total length of the insn in bits.

   Returns 1 for success, 0 for failure.  */

/* ??? The return code isn't properly used.  wip.  */

/* ??? This doesn't handle bfd_vma's.  Create another function when
   necessary.  */

static int
extract_normal (CGEN_CPU_DESC cd,
#if ! CGEN_INT_INSN_P
		CGEN_EXTRACT_INFO *ex_info,
#else
		CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
#endif
		CGEN_INSN_INT insn_value,
		unsigned int attrs,
		unsigned int word_offset,
		unsigned int start,
		unsigned int length,
		unsigned int word_length,
		unsigned int total_length,
#if ! CGEN_INT_INSN_P
		bfd_vma pc,
#else
		bfd_vma pc ATTRIBUTE_UNUSED,
#endif
		long *valuep)
{
  long value, mask;

  /* If LENGTH is zero, this operand doesn't contribute to the value
     so give it a standard value of zero.  */
  if (length == 0)
    {
      *valuep = 0;
      return 1;
    }

  if (word_length > 8 * sizeof (CGEN_INSN_INT))
    abort ();

  /* For architectures with insns smaller than the insn-base-bitsize,
     word_length may be too big.  */
  if (cd->min_insn_bitsize < cd->base_insn_bitsize)
    {
      if (word_offset + word_length > total_length)
	word_length = total_length - word_offset;
    }

  /* Does the value reside in INSN_VALUE, and at the right alignment?  */

  if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length))
    {
      if (CGEN_INSN_LSB0_P)
	value = insn_value >> ((word_offset + start + 1) - length);
      else
	value = insn_value >> (total_length - ( word_offset + start + length));
    }

#if ! CGEN_INT_INSN_P

  else
    {
      unsigned char *bufp = ex_info->insn_bytes + word_offset / 8;

      if (word_length > 8 * sizeof (CGEN_INSN_INT))
	abort ();

      if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)
	return 0;

      value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);
    }

#endif /* ! CGEN_INT_INSN_P */

  /* Written this way to avoid undefined behaviour.  */
  mask = (((1L << (length - 1)) - 1) << 1) | 1;

  value &= mask;
  /* sign extend? */
  if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)
      && (value & (1L << (length - 1))))
    value |= ~mask;

  *valuep = value;

  return 1;
}

/* Default insn extractor.

   INSN_VALUE is the first base_insn_bitsize bits, translated to host order.
   The extracted fields are stored in FIELDS.
   EX_INFO is used to handle reading variable length insns.
   Return the length of the insn in bits, or 0 if no match,
   or -1 if an error occurs fetching data (memory_error_func will have
   been called).  */

static int
extract_insn_normal (CGEN_CPU_DESC cd,
		     const CGEN_INSN *insn,
		     CGEN_EXTRACT_INFO *ex_info,
		     CGEN_INSN_INT insn_value,
		     CGEN_FIELDS *fields,
		     bfd_vma pc)
{
  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
  const CGEN_SYNTAX_CHAR_TYPE *syn;

  CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);

  CGEN_INIT_EXTRACT (cd);

  for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
    {
      int length;

      if (CGEN_SYNTAX_CHAR_P (*syn))
	continue;

      length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
					ex_info, insn_value, fields, pc);
      if (length <= 0)
	return length;
    }

  /* We recognized and successfully extracted this insn.  */
  return CGEN_INSN_BITSIZE (insn);
}

/* Machine generated code added here.  */

const char * or1k_cgen_insert_operand
  (CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);

/* Main entry point for operand insertion.

   This function is basically just a big switch statement.  Earlier versions
   used tables to look up the function to use, but
   - if the table contains both assembler and disassembler functions then
     the disassembler contains much of the assembler and vice-versa,
   - there's a lot of inlining possibilities as things grow,
   - using a switch statement avoids the function call overhead.

   This function could be moved into `parse_insn_normal', but keeping it
   separate makes clear the interface between `parse_insn_normal' and each of
   the handlers.  It's also needed by GAS to insert operands that couldn't be
   resolved during parsing.  */

const char *
or1k_cgen_insert_operand (CGEN_CPU_DESC cd,
			     int opindex,
			     CGEN_FIELDS * fields,
			     CGEN_INSN_BYTES_PTR buffer,
			     bfd_vma pc ATTRIBUTE_UNUSED)
{
  const char * errmsg = NULL;
  unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);

  switch (opindex)
    {
    case OR1K_OPERAND_DISP26 :
      {
        long value = fields->f_disp26;
        value = ((SI) (((value) - (pc))) >> (2));
        errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 25, 26, 32, total_length, buffer);
      }
      break;
    case OR1K_OPERAND_RA :
      errmsg = insert_normal (cd, fields->f_r2, 0, 0, 20, 5, 32, total_length, buffer);
      break;
    case OR1K_OPERAND_RADF :
      errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer);
      break;
    case OR1K_OPERAND_RASF :
      errmsg = insert_normal (cd, fields->f_r2, 0, 0, 20, 5, 32, total_length, buffer);
      break;
    case OR1K_OPERAND_RB :
      errmsg = insert_normal (cd, fields->f_r3, 0, 0, 15, 5, 32, total_length, buffer);
      break;
    case OR1K_OPERAND_RBDF :
      errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer);
      break;
    case OR1K_OPERAND_RBSF :
      errmsg = insert_normal (cd, fields->f_r3, 0, 0, 15, 5, 32, total_length, buffer);
      break;
    case OR1K_OPERAND_RD :
      errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer);
      break;
    case OR1K_OPERAND_RDDF :
      errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer);
      break;
    case OR1K_OPERAND_RDSF :
      errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer);
      break;
    case OR1K_OPERAND_SIMM16 :
      errmsg = insert_normal (cd, fields->f_simm16, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_SIGN_OPT), 0, 15, 16, 32, total_length, buffer);
      break;
    case OR1K_OPERAND_SIMM16_SPLIT :
      {
{
  FLD (f_imm16_25_5) = ((((INT) (FLD (f_simm16_split)) >> (11))) & (31));
  FLD (f_imm16_10_11) = ((FLD (f_simm16_split)) & (2047));
}
        errmsg = insert_normal (cd, fields->f_imm16_25_5, 0, 0, 25, 5, 32, total_length, buffer);
        if (errmsg)
          break;
        errmsg = insert_normal (cd, fields->f_imm16_10_11, 0, 0, 10, 11, 32, total_length, buffer);
        if (errmsg)
          break;
      }
      break;
    case OR1K_OPERAND_UIMM16 :
      errmsg = insert_normal (cd, fields->f_uimm16, 0, 0, 15, 16, 32, total_length, buffer);
      break;
    case OR1K_OPERAND_UIMM16_SPLIT :
      {
{
  FLD (f_imm16_25_5) = ((((UINT) (FLD (f_uimm16_split)) >> (11))) & (31));
  FLD (f_imm16_10_11) = ((FLD (f_uimm16_split)) & (2047));
}
        errmsg = insert_normal (cd, fields->f_imm16_25_5, 0, 0, 25, 5, 32, total_length, buffer);
        if (errmsg)
          break;
        errmsg = insert_normal (cd, fields->f_imm16_10_11, 0, 0, 10, 11, 32, total_length, buffer);
        if (errmsg)
          break;
      }
      break;
    case OR1K_OPERAND_UIMM6 :
      errmsg = insert_normal (cd, fields->f_uimm6, 0, 0, 5, 6, 32, total_length, buffer);
      break;

    default :
      /* xgettext:c-format */
      fprintf (stderr, _("Unrecognized field %d while building insn.\n"),
	       opindex);
      abort ();
  }

  return errmsg;
}

int or1k_cgen_extract_operand
  (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);

/* Main entry point for operand extraction.
   The result is <= 0 for error, >0 for success.
   ??? Actual values aren't well defined right now.

   This function is basically just a big switch statement.  Earlier versions
   used tables to look up the function to use, but
   - if the table contains both assembler and disassembler functions then
     the disassembler contains much of the assembler and vice-versa,
   - there's a lot of inlining possibilities as things grow,
   - using a switch statement avoids the function call overhead.

   This function could be moved into `print_insn_normal', but keeping it
   separate makes clear the interface between `print_insn_normal' and each of
   the handlers.  */

int
or1k_cgen_extract_operand (CGEN_CPU_DESC cd,
			     int opindex,
			     CGEN_EXTRACT_INFO *ex_info,
			     CGEN_INSN_INT insn_value,
			     CGEN_FIELDS * fields,
			     bfd_vma pc)
{
  /* Assume success (for those operands that are nops).  */
  int length = 1;
  unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);

  switch (opindex)
    {
    case OR1K_OPERAND_DISP26 :
      {
        long value;
        length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 25, 26, 32, total_length, pc, & value);
        value = ((((value) << (2))) + (pc));
        fields->f_disp26 = value;
      }
      break;
    case OR1K_OPERAND_RA :
      length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_r2);
      break;
    case OR1K_OPERAND_RADF :
      length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1);
      break;
    case OR1K_OPERAND_RASF :
      length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_r2);
      break;
    case OR1K_OPERAND_RB :
      length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_r3);
      break;
    case OR1K_OPERAND_RBDF :
      length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1);
      break;
    case OR1K_OPERAND_RBSF :
      length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_r3);
      break;
    case OR1K_OPERAND_RD :
      length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1);
      break;
    case OR1K_OPERAND_RDDF :
      length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1);
      break;
    case OR1K_OPERAND_RDSF :
      length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1);
      break;
    case OR1K_OPERAND_SIMM16 :
      length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_SIGN_OPT), 0, 15, 16, 32, total_length, pc, & fields->f_simm16);
      break;
    case OR1K_OPERAND_SIMM16_SPLIT :
      {
        length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_imm16_25_5);
        if (length <= 0) break;
        length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 11, 32, total_length, pc, & fields->f_imm16_10_11);
        if (length <= 0) break;
  FLD (f_simm16_split) = ((HI) (UINT) (((((FLD (f_imm16_25_5)) << (11))) | (FLD (f_imm16_10_11)))));
      }
      break;
    case OR1K_OPERAND_UIMM16 :
      length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_uimm16);
      break;
    case OR1K_OPERAND_UIMM16_SPLIT :
      {
        length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_imm16_25_5);
        if (length <= 0) break;
        length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 11, 32, total_length, pc, & fields->f_imm16_10_11);
        if (length <= 0) break;
  FLD (f_uimm16_split) = ((UHI) (UINT) (((((FLD (f_imm16_25_5)) << (11))) | (FLD (f_imm16_10_11)))));
      }
      break;
    case OR1K_OPERAND_UIMM6 :
      length = extract_normal (cd, ex_info, insn_value, 0, 0, 5, 6, 32, total_length, pc, & fields->f_uimm6);
      break;

    default :
      /* xgettext:c-format */
      fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"),
	       opindex);
      abort ();
    }

  return length;
}

cgen_insert_fn * const or1k_cgen_insert_handlers[] =
{
  insert_insn_normal,
};

cgen_extract_fn * const or1k_cgen_extract_handlers[] =
{
  extract_insn_normal,
};

int or1k_cgen_get_int_operand     (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
bfd_vma or1k_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *);

/* Getting values from cgen_fields is handled by a collection of functions.
   They are distinguished by the type of the VALUE argument they return.
   TODO: floating point, inlining support, remove cases where result type
   not appropriate.  */

int
or1k_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
			     int opindex,
			     const CGEN_FIELDS * fields)
{
  int value;

  switch (opindex)
    {
    case OR1K_OPERAND_DISP26 :
      value = fields->f_disp26;
      break;
    case OR1K_OPERAND_RA :
      value = fields->f_r2;
      break;
    case OR1K_OPERAND_RADF :
      value = fields->f_r1;
      break;
    case OR1K_OPERAND_RASF :
      value = fields->f_r2;
      break;
    case OR1K_OPERAND_RB :
      value = fields->f_r3;
      break;
    case OR1K_OPERAND_RBDF :
      value = fields->f_r1;
      break;
    case OR1K_OPERAND_RBSF :
      value = fields->f_r3;
      break;
    case OR1K_OPERAND_RD :
      value = fields->f_r1;
      break;
    case OR1K_OPERAND_RDDF :
      value = fields->f_r1;
      break;
    case OR1K_OPERAND_RDSF :
      value = fields->f_r1;
      break;
    case OR1K_OPERAND_SIMM16 :
      value = fields->f_simm16;
      break;
    case OR1K_OPERAND_SIMM16_SPLIT :
      value = fields->f_simm16_split;
      break;
    case OR1K_OPERAND_UIMM16 :
      value = fields->f_uimm16;
      break;
    case OR1K_OPERAND_UIMM16_SPLIT :
      value = fields->f_uimm16_split;
      break;
    case OR1K_OPERAND_UIMM6 :
      value = fields->f_uimm6;
      break;

    default :
      /* xgettext:c-format */
      fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"),
		       opindex);
      abort ();
  }

  return value;
}

bfd_vma
or1k_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
			     int opindex,
			     const CGEN_FIELDS * fields)
{
  bfd_vma value;

  switch (opindex)
    {
    case OR1K_OPERAND_DISP26 :
      value = fields->f_disp26;
      break;
    case OR1K_OPERAND_RA :
      value = fields->f_r2;
      break;
    case OR1K_OPERAND_RADF :
      value = fields->f_r1;
      break;
    case OR1K_OPERAND_RASF :
      value = fields->f_r2;
      break;
    case OR1K_OPERAND_RB :
      value = fields->f_r3;
      break;
    case OR1K_OPERAND_RBDF :
      value = fields->f_r1;
      break;
    case OR1K_OPERAND_RBSF :
      value = fields->f_r3;
      break;
    case OR1K_OPERAND_RD :
      value = fields->f_r1;
      break;
    case OR1K_OPERAND_RDDF :
      value = fields->f_r1;
      break;
    case OR1K_OPERAND_RDSF :
      value = fields->f_r1;
      break;
    case OR1K_OPERAND_SIMM16 :
      value = fields->f_simm16;
      break;
    case OR1K_OPERAND_SIMM16_SPLIT :
      value = fields->f_simm16_split;
      break;
    case OR1K_OPERAND_UIMM16 :
      value = fields->f_uimm16;
      break;
    case OR1K_OPERAND_UIMM16_SPLIT :
      value = fields->f_uimm16_split;
      break;
    case OR1K_OPERAND_UIMM6 :
      value = fields->f_uimm6;
      break;

    default :
      /* xgettext:c-format */
      fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"),
		       opindex);
      abort ();
  }

  return value;
}

void or1k_cgen_set_int_operand  (CGEN_CPU_DESC, int, CGEN_FIELDS *, int);
void or1k_cgen_set_vma_operand  (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma);

/* Stuffing values in cgen_fields is handled by a collection of functions.
   They are distinguished by the type of the VALUE argument they accept.
   TODO: floating point, inlining support, remove cases where argument type
   not appropriate.  */

void
or1k_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
			     int opindex,
			     CGEN_FIELDS * fields,
			     int value)
{
  switch (opindex)
    {
    case OR1K_OPERAND_DISP26 :
      fields->f_disp26 = value;
      break;
    case OR1K_OPERAND_RA :
      fields->f_r2 = value;
      break;
    case OR1K_OPERAND_RADF :
      fields->f_r1 = value;
      break;
    case OR1K_OPERAND_RASF :
      fields->f_r2 = value;
      break;
    case OR1K_OPERAND_RB :
      fields->f_r3 = value;
      break;
    case OR1K_OPERAND_RBDF :
      fields->f_r1 = value;
      break;
    case OR1K_OPERAND_RBSF :
      fields->f_r3 = value;
      break;
    case OR1K_OPERAND_RD :
      fields->f_r1 = value;
      break;
    case OR1K_OPERAND_RDDF :
      fields->f_r1 = value;
      break;
    case OR1K_OPERAND_RDSF :
      fields->f_r1 = value;
      break;
    case OR1K_OPERAND_SIMM16 :
      fields->f_simm16 = value;
      break;
    case OR1K_OPERAND_SIMM16_SPLIT :
      fields->f_simm16_split = value;
      break;
    case OR1K_OPERAND_UIMM16 :
      fields->f_uimm16 = value;
      break;
    case OR1K_OPERAND_UIMM16_SPLIT :
      fields->f_uimm16_split = value;
      break;
    case OR1K_OPERAND_UIMM6 :
      fields->f_uimm6 = value;
      break;

    default :
      /* xgettext:c-format */
      fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"),
		       opindex);
      abort ();
  }
}

void
or1k_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
			     int opindex,
			     CGEN_FIELDS * fields,
			     bfd_vma value)
{
  switch (opindex)
    {
    case OR1K_OPERAND_DISP26 :
      fields->f_disp26 = value;
      break;
    case OR1K_OPERAND_RA :
      fields->f_r2 = value;
      break;
    case OR1K_OPERAND_RADF :
      fields->f_r1 = value;
      break;
    case OR1K_OPERAND_RASF :
      fields->f_r2 = value;
      break;
    case OR1K_OPERAND_RB :
      fields->f_r3 = value;
      break;
    case OR1K_OPERAND_RBDF :
      fields->f_r1 = value;
      break;
    case OR1K_OPERAND_RBSF :
      fields->f_r3 = value;
      break;
    case OR1K_OPERAND_RD :
      fields->f_r1 = value;
      break;
    case OR1K_OPERAND_RDDF :
      fields->f_r1 = value;
      break;
    case OR1K_OPERAND_RDSF :
      fields->f_r1 = value;
      break;
    case OR1K_OPERAND_SIMM16 :
      fields->f_simm16 = value;
      break;
    case OR1K_OPERAND_SIMM16_SPLIT :
      fields->f_simm16_split = value;
      break;
    case OR1K_OPERAND_UIMM16 :
      fields->f_uimm16 = value;
      break;
    case OR1K_OPERAND_UIMM16_SPLIT :
      fields->f_uimm16_split = value;
      break;
    case OR1K_OPERAND_UIMM6 :
      fields->f_uimm6 = value;
      break;

    default :
      /* xgettext:c-format */
      fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"),
		       opindex);
      abort ();
  }
}

/* Function to call before using the instruction builder tables.  */

void
or1k_cgen_init_ibld_table (CGEN_CPU_DESC cd)
{
  cd->insert_handlers = & or1k_cgen_insert_handlers[0];
  cd->extract_handlers = & or1k_cgen_extract_handlers[0];

  cd->insert_operand = or1k_cgen_insert_operand;
  cd->extract_operand = or1k_cgen_extract_operand;

  cd->get_int_operand = or1k_cgen_get_int_operand;
  cd->set_int_operand = or1k_cgen_set_int_operand;
  cd->get_vma_operand = or1k_cgen_get_vma_operand;
  cd->set_vma_operand = or1k_cgen_set_vma_operand;
}