1/* Instruction building/extraction support for iq2000. -*- C -*-
2
3   THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator.
4   - the resultant file is machine generated, cgen-ibld.in isn't
5
6   Copyright (C) 1996-2017 Free Software Foundation, Inc.
7
8   This file is part of libopcodes.
9
10   This library is free software; you can redistribute it and/or modify
11   it under the terms of the GNU General Public License as published by
12   the Free Software Foundation; either version 3, or (at your option)
13   any later version.
14
15   It is distributed in the hope that it will be useful, but WITHOUT
16   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
17   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
18   License for more details.
19
20   You should have received a copy of the GNU General Public License
21   along with this program; if not, write to the Free Software Foundation, Inc.,
22   51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
23
24/* ??? Eventually more and more of this stuff can go to cpu-independent files.
25   Keep that in mind.  */
26
27#include "sysdep.h"
28#include <stdio.h>
29#include "ansidecl.h"
30#include "dis-asm.h"
31#include "bfd.h"
32#include "symcat.h"
33#include "iq2000-desc.h"
34#include "iq2000-opc.h"
35#include "cgen/basic-modes.h"
36#include "opintl.h"
37#include "safe-ctype.h"
38
39#undef  min
40#define min(a,b) ((a) < (b) ? (a) : (b))
41#undef  max
42#define max(a,b) ((a) > (b) ? (a) : (b))
43
44/* Used by the ifield rtx function.  */
45#define FLD(f) (fields->f)
46
47static const char * insert_normal
48  (CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int,
49   unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR);
50static const char * insert_insn_normal
51  (CGEN_CPU_DESC, const CGEN_INSN *,
52   CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
53static int extract_normal
54  (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT,
55   unsigned int, unsigned int, unsigned int, unsigned int,
56   unsigned int, unsigned int, bfd_vma, long *);
57static int extract_insn_normal
58  (CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *,
59   CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
60#if CGEN_INT_INSN_P
61static void put_insn_int_value
62  (CGEN_CPU_DESC, CGEN_INSN_BYTES_PTR, int, int, CGEN_INSN_INT);
63#endif
64#if ! CGEN_INT_INSN_P
65static CGEN_INLINE void insert_1
66  (CGEN_CPU_DESC, unsigned long, int, int, int, unsigned char *);
67static CGEN_INLINE int fill_cache
68  (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *,  int, int, bfd_vma);
69static CGEN_INLINE long extract_1
70  (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, int, unsigned char *, bfd_vma);
71#endif
72
73/* Operand insertion.  */
74
75#if ! CGEN_INT_INSN_P
76
77/* Subroutine of insert_normal.  */
78
79static CGEN_INLINE void
80insert_1 (CGEN_CPU_DESC cd,
81	  unsigned long value,
82	  int start,
83	  int length,
84	  int word_length,
85	  unsigned char *bufp)
86{
87  unsigned long x,mask;
88  int shift;
89
90  x = cgen_get_insn_value (cd, bufp, word_length);
91
92  /* Written this way to avoid undefined behaviour.  */
93  mask = (((1L << (length - 1)) - 1) << 1) | 1;
94  if (CGEN_INSN_LSB0_P)
95    shift = (start + 1) - length;
96  else
97    shift = (word_length - (start + length));
98  x = (x & ~(mask << shift)) | ((value & mask) << shift);
99
100  cgen_put_insn_value (cd, bufp, word_length, (bfd_vma) x);
101}
102
103#endif /* ! CGEN_INT_INSN_P */
104
105/* Default insertion routine.
106
107   ATTRS is a mask of the boolean attributes.
108   WORD_OFFSET is the offset in bits from the start of the insn of the value.
109   WORD_LENGTH is the length of the word in bits in which the value resides.
110   START is the starting bit number in the word, architecture origin.
111   LENGTH is the length of VALUE in bits.
112   TOTAL_LENGTH is the total length of the insn in bits.
113
114   The result is an error message or NULL if success.  */
115
116/* ??? This duplicates functionality with bfd's howto table and
117   bfd_install_relocation.  */
118/* ??? This doesn't handle bfd_vma's.  Create another function when
119   necessary.  */
120
121static const char *
122insert_normal (CGEN_CPU_DESC cd,
123	       long value,
124	       unsigned int attrs,
125	       unsigned int word_offset,
126	       unsigned int start,
127	       unsigned int length,
128	       unsigned int word_length,
129	       unsigned int total_length,
130	       CGEN_INSN_BYTES_PTR buffer)
131{
132  static char errbuf[100];
133  /* Written this way to avoid undefined behaviour.  */
134  unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1;
135
136  /* If LENGTH is zero, this operand doesn't contribute to the value.  */
137  if (length == 0)
138    return NULL;
139
140  if (word_length > 8 * sizeof (CGEN_INSN_INT))
141    abort ();
142
143  /* For architectures with insns smaller than the base-insn-bitsize,
144     word_length may be too big.  */
145  if (cd->min_insn_bitsize < cd->base_insn_bitsize)
146    {
147      if (word_offset == 0
148	  && word_length > total_length)
149	word_length = total_length;
150    }
151
152  /* Ensure VALUE will fit.  */
153  if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGN_OPT))
154    {
155      long minval = - (1L << (length - 1));
156      unsigned long maxval = mask;
157
158      if ((value > 0 && (unsigned long) value > maxval)
159	  || value < minval)
160	{
161	  /* xgettext:c-format */
162	  sprintf (errbuf,
163		   _("operand out of range (%ld not between %ld and %lu)"),
164		   value, minval, maxval);
165	  return errbuf;
166	}
167    }
168  else if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED))
169    {
170      unsigned long maxval = mask;
171      unsigned long val = (unsigned long) value;
172
173      /* For hosts with a word size > 32 check to see if value has been sign
174	 extended beyond 32 bits.  If so then ignore these higher sign bits
175	 as the user is attempting to store a 32-bit signed value into an
176	 unsigned 32-bit field which is allowed.  */
177      if (sizeof (unsigned long) > 4 && ((value >> 32) == -1))
178	val &= 0xFFFFFFFF;
179
180      if (val > maxval)
181	{
182	  /* xgettext:c-format */
183	  sprintf (errbuf,
184		   _("operand out of range (0x%lx not between 0 and 0x%lx)"),
185		   val, maxval);
186	  return errbuf;
187	}
188    }
189  else
190    {
191      if (! cgen_signed_overflow_ok_p (cd))
192	{
193	  long minval = - (1L << (length - 1));
194	  long maxval =   (1L << (length - 1)) - 1;
195
196	  if (value < minval || value > maxval)
197	    {
198	      sprintf
199		/* xgettext:c-format */
200		(errbuf, _("operand out of range (%ld not between %ld and %ld)"),
201		 value, minval, maxval);
202	      return errbuf;
203	    }
204	}
205    }
206
207#if CGEN_INT_INSN_P
208
209  {
210    int shift_within_word, shift_to_word, shift;
211
212    /* How to shift the value to BIT0 of the word.  */
213    shift_to_word = total_length - (word_offset + word_length);
214
215    /* How to shift the value to the field within the word.  */
216    if (CGEN_INSN_LSB0_P)
217      shift_within_word = start + 1 - length;
218    else
219      shift_within_word = word_length - start - length;
220
221    /* The total SHIFT, then mask in the value.  */
222    shift = shift_to_word + shift_within_word;
223    *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);
224  }
225
226#else /* ! CGEN_INT_INSN_P */
227
228  {
229    unsigned char *bufp = (unsigned char *) buffer + word_offset / 8;
230
231    insert_1 (cd, value, start, length, word_length, bufp);
232  }
233
234#endif /* ! CGEN_INT_INSN_P */
235
236  return NULL;
237}
238
239/* Default insn builder (insert handler).
240   The instruction is recorded in CGEN_INT_INSN_P byte order (meaning
241   that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is
242   recorded in host byte order, otherwise BUFFER is an array of bytes
243   and the value is recorded in target byte order).
244   The result is an error message or NULL if success.  */
245
246static const char *
247insert_insn_normal (CGEN_CPU_DESC cd,
248		    const CGEN_INSN * insn,
249		    CGEN_FIELDS * fields,
250		    CGEN_INSN_BYTES_PTR buffer,
251		    bfd_vma pc)
252{
253  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
254  unsigned long value;
255  const CGEN_SYNTAX_CHAR_TYPE * syn;
256
257  CGEN_INIT_INSERT (cd);
258  value = CGEN_INSN_BASE_VALUE (insn);
259
260  /* If we're recording insns as numbers (rather than a string of bytes),
261     target byte order handling is deferred until later.  */
262
263#if CGEN_INT_INSN_P
264
265  put_insn_int_value (cd, buffer, cd->base_insn_bitsize,
266		      CGEN_FIELDS_BITSIZE (fields), value);
267
268#else
269
270  cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize,
271					(unsigned) CGEN_FIELDS_BITSIZE (fields)),
272		       value);
273
274#endif /* ! CGEN_INT_INSN_P */
275
276  /* ??? It would be better to scan the format's fields.
277     Still need to be able to insert a value based on the operand though;
278     e.g. storing a branch displacement that got resolved later.
279     Needs more thought first.  */
280
281  for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn)
282    {
283      const char *errmsg;
284
285      if (CGEN_SYNTAX_CHAR_P (* syn))
286	continue;
287
288      errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
289				       fields, buffer, pc);
290      if (errmsg)
291	return errmsg;
292    }
293
294  return NULL;
295}
296
297#if CGEN_INT_INSN_P
298/* Cover function to store an insn value into an integral insn.  Must go here
299   because it needs <prefix>-desc.h for CGEN_INT_INSN_P.  */
300
301static void
302put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
303		    CGEN_INSN_BYTES_PTR buf,
304		    int length,
305		    int insn_length,
306		    CGEN_INSN_INT value)
307{
308  /* For architectures with insns smaller than the base-insn-bitsize,
309     length may be too big.  */
310  if (length > insn_length)
311    *buf = value;
312  else
313    {
314      int shift = insn_length - length;
315      /* Written this way to avoid undefined behaviour.  */
316      CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;
317
318      *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift);
319    }
320}
321#endif
322
323/* Operand extraction.  */
324
325#if ! CGEN_INT_INSN_P
326
327/* Subroutine of extract_normal.
328   Ensure sufficient bytes are cached in EX_INFO.
329   OFFSET is the offset in bytes from the start of the insn of the value.
330   BYTES is the length of the needed value.
331   Returns 1 for success, 0 for failure.  */
332
333static CGEN_INLINE int
334fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
335	    CGEN_EXTRACT_INFO *ex_info,
336	    int offset,
337	    int bytes,
338	    bfd_vma pc)
339{
340  /* It's doubtful that the middle part has already been fetched so
341     we don't optimize that case.  kiss.  */
342  unsigned int mask;
343  disassemble_info *info = (disassemble_info *) ex_info->dis_info;
344
345  /* First do a quick check.  */
346  mask = (1 << bytes) - 1;
347  if (((ex_info->valid >> offset) & mask) == mask)
348    return 1;
349
350  /* Search for the first byte we need to read.  */
351  for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1)
352    if (! (mask & ex_info->valid))
353      break;
354
355  if (bytes)
356    {
357      int status;
358
359      pc += offset;
360      status = (*info->read_memory_func)
361	(pc, ex_info->insn_bytes + offset, bytes, info);
362
363      if (status != 0)
364	{
365	  (*info->memory_error_func) (status, pc, info);
366	  return 0;
367	}
368
369      ex_info->valid |= ((1 << bytes) - 1) << offset;
370    }
371
372  return 1;
373}
374
375/* Subroutine of extract_normal.  */
376
377static CGEN_INLINE long
378extract_1 (CGEN_CPU_DESC cd,
379	   CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
380	   int start,
381	   int length,
382	   int word_length,
383	   unsigned char *bufp,
384	   bfd_vma pc ATTRIBUTE_UNUSED)
385{
386  unsigned long x;
387  int shift;
388
389  x = cgen_get_insn_value (cd, bufp, word_length);
390
391  if (CGEN_INSN_LSB0_P)
392    shift = (start + 1) - length;
393  else
394    shift = (word_length - (start + length));
395  return x >> shift;
396}
397
398#endif /* ! CGEN_INT_INSN_P */
399
400/* Default extraction routine.
401
402   INSN_VALUE is the first base_insn_bitsize bits of the insn in host order,
403   or sometimes less for cases like the m32r where the base insn size is 32
404   but some insns are 16 bits.
405   ATTRS is a mask of the boolean attributes.  We only need `SIGNED',
406   but for generality we take a bitmask of all of them.
407   WORD_OFFSET is the offset in bits from the start of the insn of the value.
408   WORD_LENGTH is the length of the word in bits in which the value resides.
409   START is the starting bit number in the word, architecture origin.
410   LENGTH is the length of VALUE in bits.
411   TOTAL_LENGTH is the total length of the insn in bits.
412
413   Returns 1 for success, 0 for failure.  */
414
415/* ??? The return code isn't properly used.  wip.  */
416
417/* ??? This doesn't handle bfd_vma's.  Create another function when
418   necessary.  */
419
420static int
421extract_normal (CGEN_CPU_DESC cd,
422#if ! CGEN_INT_INSN_P
423		CGEN_EXTRACT_INFO *ex_info,
424#else
425		CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
426#endif
427		CGEN_INSN_INT insn_value,
428		unsigned int attrs,
429		unsigned int word_offset,
430		unsigned int start,
431		unsigned int length,
432		unsigned int word_length,
433		unsigned int total_length,
434#if ! CGEN_INT_INSN_P
435		bfd_vma pc,
436#else
437		bfd_vma pc ATTRIBUTE_UNUSED,
438#endif
439		long *valuep)
440{
441  long value, mask;
442
443  /* If LENGTH is zero, this operand doesn't contribute to the value
444     so give it a standard value of zero.  */
445  if (length == 0)
446    {
447      *valuep = 0;
448      return 1;
449    }
450
451  if (word_length > 8 * sizeof (CGEN_INSN_INT))
452    abort ();
453
454  /* For architectures with insns smaller than the insn-base-bitsize,
455     word_length may be too big.  */
456  if (cd->min_insn_bitsize < cd->base_insn_bitsize)
457    {
458      if (word_offset + word_length > total_length)
459	word_length = total_length - word_offset;
460    }
461
462  /* Does the value reside in INSN_VALUE, and at the right alignment?  */
463
464  if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length))
465    {
466      if (CGEN_INSN_LSB0_P)
467	value = insn_value >> ((word_offset + start + 1) - length);
468      else
469	value = insn_value >> (total_length - ( word_offset + start + length));
470    }
471
472#if ! CGEN_INT_INSN_P
473
474  else
475    {
476      unsigned char *bufp = ex_info->insn_bytes + word_offset / 8;
477
478      if (word_length > 8 * sizeof (CGEN_INSN_INT))
479	abort ();
480
481      if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)
482	return 0;
483
484      value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);
485    }
486
487#endif /* ! CGEN_INT_INSN_P */
488
489  /* Written this way to avoid undefined behaviour.  */
490  mask = (((1L << (length - 1)) - 1) << 1) | 1;
491
492  value &= mask;
493  /* sign extend? */
494  if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)
495      && (value & (1L << (length - 1))))
496    value |= ~mask;
497
498  *valuep = value;
499
500  return 1;
501}
502
503/* Default insn extractor.
504
505   INSN_VALUE is the first base_insn_bitsize bits, translated to host order.
506   The extracted fields are stored in FIELDS.
507   EX_INFO is used to handle reading variable length insns.
508   Return the length of the insn in bits, or 0 if no match,
509   or -1 if an error occurs fetching data (memory_error_func will have
510   been called).  */
511
512static int
513extract_insn_normal (CGEN_CPU_DESC cd,
514		     const CGEN_INSN *insn,
515		     CGEN_EXTRACT_INFO *ex_info,
516		     CGEN_INSN_INT insn_value,
517		     CGEN_FIELDS *fields,
518		     bfd_vma pc)
519{
520  const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
521  const CGEN_SYNTAX_CHAR_TYPE *syn;
522
523  CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
524
525  CGEN_INIT_EXTRACT (cd);
526
527  for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
528    {
529      int length;
530
531      if (CGEN_SYNTAX_CHAR_P (*syn))
532	continue;
533
534      length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
535					ex_info, insn_value, fields, pc);
536      if (length <= 0)
537	return length;
538    }
539
540  /* We recognized and successfully extracted this insn.  */
541  return CGEN_INSN_BITSIZE (insn);
542}
543
544/* Machine generated code added here.  */
545
546const char * iq2000_cgen_insert_operand
547  (CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
548
549/* Main entry point for operand insertion.
550
551   This function is basically just a big switch statement.  Earlier versions
552   used tables to look up the function to use, but
553   - if the table contains both assembler and disassembler functions then
554     the disassembler contains much of the assembler and vice-versa,
555   - there's a lot of inlining possibilities as things grow,
556   - using a switch statement avoids the function call overhead.
557
558   This function could be moved into `parse_insn_normal', but keeping it
559   separate makes clear the interface between `parse_insn_normal' and each of
560   the handlers.  It's also needed by GAS to insert operands that couldn't be
561   resolved during parsing.  */
562
563const char *
564iq2000_cgen_insert_operand (CGEN_CPU_DESC cd,
565			     int opindex,
566			     CGEN_FIELDS * fields,
567			     CGEN_INSN_BYTES_PTR buffer,
568			     bfd_vma pc ATTRIBUTE_UNUSED)
569{
570  const char * errmsg = NULL;
571  unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
572
573  switch (opindex)
574    {
575    case IQ2000_OPERAND__INDEX :
576      errmsg = insert_normal (cd, fields->f_index, 0, 0, 8, 9, 32, total_length, buffer);
577      break;
578    case IQ2000_OPERAND_BASE :
579      errmsg = insert_normal (cd, fields->f_rs, 0, 0, 25, 5, 32, total_length, buffer);
580      break;
581    case IQ2000_OPERAND_BASEOFF :
582      errmsg = insert_normal (cd, fields->f_imm, 0, 0, 15, 16, 32, total_length, buffer);
583      break;
584    case IQ2000_OPERAND_BITNUM :
585      errmsg = insert_normal (cd, fields->f_rt, 0, 0, 20, 5, 32, total_length, buffer);
586      break;
587    case IQ2000_OPERAND_BYTECOUNT :
588      errmsg = insert_normal (cd, fields->f_bytecount, 0, 0, 7, 8, 32, total_length, buffer);
589      break;
590    case IQ2000_OPERAND_CAM_Y :
591      errmsg = insert_normal (cd, fields->f_cam_y, 0, 0, 2, 3, 32, total_length, buffer);
592      break;
593    case IQ2000_OPERAND_CAM_Z :
594      errmsg = insert_normal (cd, fields->f_cam_z, 0, 0, 5, 3, 32, total_length, buffer);
595      break;
596    case IQ2000_OPERAND_CM_3FUNC :
597      errmsg = insert_normal (cd, fields->f_cm_3func, 0, 0, 5, 3, 32, total_length, buffer);
598      break;
599    case IQ2000_OPERAND_CM_3Z :
600      errmsg = insert_normal (cd, fields->f_cm_3z, 0, 0, 1, 2, 32, total_length, buffer);
601      break;
602    case IQ2000_OPERAND_CM_4FUNC :
603      errmsg = insert_normal (cd, fields->f_cm_4func, 0, 0, 5, 4, 32, total_length, buffer);
604      break;
605    case IQ2000_OPERAND_CM_4Z :
606      errmsg = insert_normal (cd, fields->f_cm_4z, 0, 0, 2, 3, 32, total_length, buffer);
607      break;
608    case IQ2000_OPERAND_COUNT :
609      errmsg = insert_normal (cd, fields->f_count, 0, 0, 15, 7, 32, total_length, buffer);
610      break;
611    case IQ2000_OPERAND_EXECODE :
612      errmsg = insert_normal (cd, fields->f_excode, 0, 0, 25, 20, 32, total_length, buffer);
613      break;
614    case IQ2000_OPERAND_HI16 :
615      errmsg = insert_normal (cd, fields->f_imm, 0, 0, 15, 16, 32, total_length, buffer);
616      break;
617    case IQ2000_OPERAND_IMM :
618      errmsg = insert_normal (cd, fields->f_imm, 0, 0, 15, 16, 32, total_length, buffer);
619      break;
620    case IQ2000_OPERAND_JMPTARG :
621      {
622        long value = fields->f_jtarg;
623        value = ((USI) (((value) & (262143))) >> (2));
624        errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 15, 16, 32, total_length, buffer);
625      }
626      break;
627    case IQ2000_OPERAND_JMPTARGQ10 :
628      {
629        long value = fields->f_jtargq10;
630        value = ((USI) (((value) & (8388607))) >> (2));
631        errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 20, 21, 32, total_length, buffer);
632      }
633      break;
634    case IQ2000_OPERAND_LO16 :
635      errmsg = insert_normal (cd, fields->f_imm, 0, 0, 15, 16, 32, total_length, buffer);
636      break;
637    case IQ2000_OPERAND_MASK :
638      errmsg = insert_normal (cd, fields->f_mask, 0, 0, 9, 4, 32, total_length, buffer);
639      break;
640    case IQ2000_OPERAND_MASKL :
641      errmsg = insert_normal (cd, fields->f_maskl, 0, 0, 4, 5, 32, total_length, buffer);
642      break;
643    case IQ2000_OPERAND_MASKQ10 :
644      errmsg = insert_normal (cd, fields->f_maskq10, 0, 0, 10, 5, 32, total_length, buffer);
645      break;
646    case IQ2000_OPERAND_MASKR :
647      errmsg = insert_normal (cd, fields->f_rs, 0, 0, 25, 5, 32, total_length, buffer);
648      break;
649    case IQ2000_OPERAND_MLO16 :
650      errmsg = insert_normal (cd, fields->f_imm, 0, 0, 15, 16, 32, total_length, buffer);
651      break;
652    case IQ2000_OPERAND_OFFSET :
653      {
654        long value = fields->f_offset;
655        value = ((SI) (((value) - (pc))) >> (2));
656        errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 15, 16, 32, total_length, buffer);
657      }
658      break;
659    case IQ2000_OPERAND_RD :
660      errmsg = insert_normal (cd, fields->f_rd, 0, 0, 15, 5, 32, total_length, buffer);
661      break;
662    case IQ2000_OPERAND_RD_RS :
663      {
664{
665  FLD (f_rd) = FLD (f_rd_rs);
666  FLD (f_rs) = FLD (f_rd_rs);
667}
668        errmsg = insert_normal (cd, fields->f_rd, 0, 0, 15, 5, 32, total_length, buffer);
669        if (errmsg)
670          break;
671        errmsg = insert_normal (cd, fields->f_rs, 0, 0, 25, 5, 32, total_length, buffer);
672        if (errmsg)
673          break;
674      }
675      break;
676    case IQ2000_OPERAND_RD_RT :
677      {
678{
679  FLD (f_rd) = FLD (f_rd_rt);
680  FLD (f_rt) = FLD (f_rd_rt);
681}
682        errmsg = insert_normal (cd, fields->f_rd, 0, 0, 15, 5, 32, total_length, buffer);
683        if (errmsg)
684          break;
685        errmsg = insert_normal (cd, fields->f_rt, 0, 0, 20, 5, 32, total_length, buffer);
686        if (errmsg)
687          break;
688      }
689      break;
690    case IQ2000_OPERAND_RS :
691      errmsg = insert_normal (cd, fields->f_rs, 0, 0, 25, 5, 32, total_length, buffer);
692      break;
693    case IQ2000_OPERAND_RT :
694      errmsg = insert_normal (cd, fields->f_rt, 0, 0, 20, 5, 32, total_length, buffer);
695      break;
696    case IQ2000_OPERAND_RT_RS :
697      {
698{
699  FLD (f_rt) = FLD (f_rt_rs);
700  FLD (f_rs) = FLD (f_rt_rs);
701}
702        errmsg = insert_normal (cd, fields->f_rt, 0, 0, 20, 5, 32, total_length, buffer);
703        if (errmsg)
704          break;
705        errmsg = insert_normal (cd, fields->f_rs, 0, 0, 25, 5, 32, total_length, buffer);
706        if (errmsg)
707          break;
708      }
709      break;
710    case IQ2000_OPERAND_SHAMT :
711      errmsg = insert_normal (cd, fields->f_shamt, 0, 0, 10, 5, 32, total_length, buffer);
712      break;
713
714    default :
715      /* xgettext:c-format */
716      fprintf (stderr, _("Unrecognized field %d while building insn.\n"),
717	       opindex);
718      abort ();
719  }
720
721  return errmsg;
722}
723
724int iq2000_cgen_extract_operand
725  (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
726
727/* Main entry point for operand extraction.
728   The result is <= 0 for error, >0 for success.
729   ??? Actual values aren't well defined right now.
730
731   This function is basically just a big switch statement.  Earlier versions
732   used tables to look up the function to use, but
733   - if the table contains both assembler and disassembler functions then
734     the disassembler contains much of the assembler and vice-versa,
735   - there's a lot of inlining possibilities as things grow,
736   - using a switch statement avoids the function call overhead.
737
738   This function could be moved into `print_insn_normal', but keeping it
739   separate makes clear the interface between `print_insn_normal' and each of
740   the handlers.  */
741
742int
743iq2000_cgen_extract_operand (CGEN_CPU_DESC cd,
744			     int opindex,
745			     CGEN_EXTRACT_INFO *ex_info,
746			     CGEN_INSN_INT insn_value,
747			     CGEN_FIELDS * fields,
748			     bfd_vma pc)
749{
750  /* Assume success (for those operands that are nops).  */
751  int length = 1;
752  unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
753
754  switch (opindex)
755    {
756    case IQ2000_OPERAND__INDEX :
757      length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 9, 32, total_length, pc, & fields->f_index);
758      break;
759    case IQ2000_OPERAND_BASE :
760      length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_rs);
761      break;
762    case IQ2000_OPERAND_BASEOFF :
763      length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_imm);
764      break;
765    case IQ2000_OPERAND_BITNUM :
766      length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_rt);
767      break;
768    case IQ2000_OPERAND_BYTECOUNT :
769      length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 32, total_length, pc, & fields->f_bytecount);
770      break;
771    case IQ2000_OPERAND_CAM_Y :
772      length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 32, total_length, pc, & fields->f_cam_y);
773      break;
774    case IQ2000_OPERAND_CAM_Z :
775      length = extract_normal (cd, ex_info, insn_value, 0, 0, 5, 3, 32, total_length, pc, & fields->f_cam_z);
776      break;
777    case IQ2000_OPERAND_CM_3FUNC :
778      length = extract_normal (cd, ex_info, insn_value, 0, 0, 5, 3, 32, total_length, pc, & fields->f_cm_3func);
779      break;
780    case IQ2000_OPERAND_CM_3Z :
781      length = extract_normal (cd, ex_info, insn_value, 0, 0, 1, 2, 32, total_length, pc, & fields->f_cm_3z);
782      break;
783    case IQ2000_OPERAND_CM_4FUNC :
784      length = extract_normal (cd, ex_info, insn_value, 0, 0, 5, 4, 32, total_length, pc, & fields->f_cm_4func);
785      break;
786    case IQ2000_OPERAND_CM_4Z :
787      length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 32, total_length, pc, & fields->f_cm_4z);
788      break;
789    case IQ2000_OPERAND_COUNT :
790      length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 7, 32, total_length, pc, & fields->f_count);
791      break;
792    case IQ2000_OPERAND_EXECODE :
793      length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 20, 32, total_length, pc, & fields->f_excode);
794      break;
795    case IQ2000_OPERAND_HI16 :
796      length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_imm);
797      break;
798    case IQ2000_OPERAND_IMM :
799      length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_imm);
800      break;
801    case IQ2000_OPERAND_JMPTARG :
802      {
803        long value;
804        length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 15, 16, 32, total_length, pc, & value);
805        value = ((((pc) & (0xf0000000))) | (((value) << (2))));
806        fields->f_jtarg = value;
807      }
808      break;
809    case IQ2000_OPERAND_JMPTARGQ10 :
810      {
811        long value;
812        length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 20, 21, 32, total_length, pc, & value);
813        value = ((((pc) & (0xf0000000))) | (((value) << (2))));
814        fields->f_jtargq10 = value;
815      }
816      break;
817    case IQ2000_OPERAND_LO16 :
818      length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_imm);
819      break;
820    case IQ2000_OPERAND_MASK :
821      length = extract_normal (cd, ex_info, insn_value, 0, 0, 9, 4, 32, total_length, pc, & fields->f_mask);
822      break;
823    case IQ2000_OPERAND_MASKL :
824      length = extract_normal (cd, ex_info, insn_value, 0, 0, 4, 5, 32, total_length, pc, & fields->f_maskl);
825      break;
826    case IQ2000_OPERAND_MASKQ10 :
827      length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 5, 32, total_length, pc, & fields->f_maskq10);
828      break;
829    case IQ2000_OPERAND_MASKR :
830      length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_rs);
831      break;
832    case IQ2000_OPERAND_MLO16 :
833      length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_imm);
834      break;
835    case IQ2000_OPERAND_OFFSET :
836      {
837        long value;
838        length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 15, 16, 32, total_length, pc, & value);
839        value = ((((value) << (2))) + (((pc) + (4))));
840        fields->f_offset = value;
841      }
842      break;
843    case IQ2000_OPERAND_RD :
844      length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_rd);
845      break;
846    case IQ2000_OPERAND_RD_RS :
847      {
848        length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_rd);
849        if (length <= 0) break;
850        length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_rs);
851        if (length <= 0) break;
852{
853  FLD (f_rd_rs) = FLD (f_rs);
854}
855      }
856      break;
857    case IQ2000_OPERAND_RD_RT :
858      {
859        length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_rd);
860        if (length <= 0) break;
861        length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_rt);
862        if (length <= 0) break;
863{
864  FLD (f_rd_rt) = FLD (f_rt);
865}
866      }
867      break;
868    case IQ2000_OPERAND_RS :
869      length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_rs);
870      break;
871    case IQ2000_OPERAND_RT :
872      length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_rt);
873      break;
874    case IQ2000_OPERAND_RT_RS :
875      {
876        length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_rt);
877        if (length <= 0) break;
878        length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_rs);
879        if (length <= 0) break;
880{
881  FLD (f_rd_rs) = FLD (f_rs);
882}
883      }
884      break;
885    case IQ2000_OPERAND_SHAMT :
886      length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 5, 32, total_length, pc, & fields->f_shamt);
887      break;
888
889    default :
890      /* xgettext:c-format */
891      fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"),
892	       opindex);
893      abort ();
894    }
895
896  return length;
897}
898
899cgen_insert_fn * const iq2000_cgen_insert_handlers[] =
900{
901  insert_insn_normal,
902};
903
904cgen_extract_fn * const iq2000_cgen_extract_handlers[] =
905{
906  extract_insn_normal,
907};
908
909int iq2000_cgen_get_int_operand     (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
910bfd_vma iq2000_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
911
912/* Getting values from cgen_fields is handled by a collection of functions.
913   They are distinguished by the type of the VALUE argument they return.
914   TODO: floating point, inlining support, remove cases where result type
915   not appropriate.  */
916
917int
918iq2000_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
919			     int opindex,
920			     const CGEN_FIELDS * fields)
921{
922  int value;
923
924  switch (opindex)
925    {
926    case IQ2000_OPERAND__INDEX :
927      value = fields->f_index;
928      break;
929    case IQ2000_OPERAND_BASE :
930      value = fields->f_rs;
931      break;
932    case IQ2000_OPERAND_BASEOFF :
933      value = fields->f_imm;
934      break;
935    case IQ2000_OPERAND_BITNUM :
936      value = fields->f_rt;
937      break;
938    case IQ2000_OPERAND_BYTECOUNT :
939      value = fields->f_bytecount;
940      break;
941    case IQ2000_OPERAND_CAM_Y :
942      value = fields->f_cam_y;
943      break;
944    case IQ2000_OPERAND_CAM_Z :
945      value = fields->f_cam_z;
946      break;
947    case IQ2000_OPERAND_CM_3FUNC :
948      value = fields->f_cm_3func;
949      break;
950    case IQ2000_OPERAND_CM_3Z :
951      value = fields->f_cm_3z;
952      break;
953    case IQ2000_OPERAND_CM_4FUNC :
954      value = fields->f_cm_4func;
955      break;
956    case IQ2000_OPERAND_CM_4Z :
957      value = fields->f_cm_4z;
958      break;
959    case IQ2000_OPERAND_COUNT :
960      value = fields->f_count;
961      break;
962    case IQ2000_OPERAND_EXECODE :
963      value = fields->f_excode;
964      break;
965    case IQ2000_OPERAND_HI16 :
966      value = fields->f_imm;
967      break;
968    case IQ2000_OPERAND_IMM :
969      value = fields->f_imm;
970      break;
971    case IQ2000_OPERAND_JMPTARG :
972      value = fields->f_jtarg;
973      break;
974    case IQ2000_OPERAND_JMPTARGQ10 :
975      value = fields->f_jtargq10;
976      break;
977    case IQ2000_OPERAND_LO16 :
978      value = fields->f_imm;
979      break;
980    case IQ2000_OPERAND_MASK :
981      value = fields->f_mask;
982      break;
983    case IQ2000_OPERAND_MASKL :
984      value = fields->f_maskl;
985      break;
986    case IQ2000_OPERAND_MASKQ10 :
987      value = fields->f_maskq10;
988      break;
989    case IQ2000_OPERAND_MASKR :
990      value = fields->f_rs;
991      break;
992    case IQ2000_OPERAND_MLO16 :
993      value = fields->f_imm;
994      break;
995    case IQ2000_OPERAND_OFFSET :
996      value = fields->f_offset;
997      break;
998    case IQ2000_OPERAND_RD :
999      value = fields->f_rd;
1000      break;
1001    case IQ2000_OPERAND_RD_RS :
1002      value = fields->f_rd_rs;
1003      break;
1004    case IQ2000_OPERAND_RD_RT :
1005      value = fields->f_rd_rt;
1006      break;
1007    case IQ2000_OPERAND_RS :
1008      value = fields->f_rs;
1009      break;
1010    case IQ2000_OPERAND_RT :
1011      value = fields->f_rt;
1012      break;
1013    case IQ2000_OPERAND_RT_RS :
1014      value = fields->f_rt_rs;
1015      break;
1016    case IQ2000_OPERAND_SHAMT :
1017      value = fields->f_shamt;
1018      break;
1019
1020    default :
1021      /* xgettext:c-format */
1022      fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"),
1023		       opindex);
1024      abort ();
1025  }
1026
1027  return value;
1028}
1029
1030bfd_vma
1031iq2000_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
1032			     int opindex,
1033			     const CGEN_FIELDS * fields)
1034{
1035  bfd_vma value;
1036
1037  switch (opindex)
1038    {
1039    case IQ2000_OPERAND__INDEX :
1040      value = fields->f_index;
1041      break;
1042    case IQ2000_OPERAND_BASE :
1043      value = fields->f_rs;
1044      break;
1045    case IQ2000_OPERAND_BASEOFF :
1046      value = fields->f_imm;
1047      break;
1048    case IQ2000_OPERAND_BITNUM :
1049      value = fields->f_rt;
1050      break;
1051    case IQ2000_OPERAND_BYTECOUNT :
1052      value = fields->f_bytecount;
1053      break;
1054    case IQ2000_OPERAND_CAM_Y :
1055      value = fields->f_cam_y;
1056      break;
1057    case IQ2000_OPERAND_CAM_Z :
1058      value = fields->f_cam_z;
1059      break;
1060    case IQ2000_OPERAND_CM_3FUNC :
1061      value = fields->f_cm_3func;
1062      break;
1063    case IQ2000_OPERAND_CM_3Z :
1064      value = fields->f_cm_3z;
1065      break;
1066    case IQ2000_OPERAND_CM_4FUNC :
1067      value = fields->f_cm_4func;
1068      break;
1069    case IQ2000_OPERAND_CM_4Z :
1070      value = fields->f_cm_4z;
1071      break;
1072    case IQ2000_OPERAND_COUNT :
1073      value = fields->f_count;
1074      break;
1075    case IQ2000_OPERAND_EXECODE :
1076      value = fields->f_excode;
1077      break;
1078    case IQ2000_OPERAND_HI16 :
1079      value = fields->f_imm;
1080      break;
1081    case IQ2000_OPERAND_IMM :
1082      value = fields->f_imm;
1083      break;
1084    case IQ2000_OPERAND_JMPTARG :
1085      value = fields->f_jtarg;
1086      break;
1087    case IQ2000_OPERAND_JMPTARGQ10 :
1088      value = fields->f_jtargq10;
1089      break;
1090    case IQ2000_OPERAND_LO16 :
1091      value = fields->f_imm;
1092      break;
1093    case IQ2000_OPERAND_MASK :
1094      value = fields->f_mask;
1095      break;
1096    case IQ2000_OPERAND_MASKL :
1097      value = fields->f_maskl;
1098      break;
1099    case IQ2000_OPERAND_MASKQ10 :
1100      value = fields->f_maskq10;
1101      break;
1102    case IQ2000_OPERAND_MASKR :
1103      value = fields->f_rs;
1104      break;
1105    case IQ2000_OPERAND_MLO16 :
1106      value = fields->f_imm;
1107      break;
1108    case IQ2000_OPERAND_OFFSET :
1109      value = fields->f_offset;
1110      break;
1111    case IQ2000_OPERAND_RD :
1112      value = fields->f_rd;
1113      break;
1114    case IQ2000_OPERAND_RD_RS :
1115      value = fields->f_rd_rs;
1116      break;
1117    case IQ2000_OPERAND_RD_RT :
1118      value = fields->f_rd_rt;
1119      break;
1120    case IQ2000_OPERAND_RS :
1121      value = fields->f_rs;
1122      break;
1123    case IQ2000_OPERAND_RT :
1124      value = fields->f_rt;
1125      break;
1126    case IQ2000_OPERAND_RT_RS :
1127      value = fields->f_rt_rs;
1128      break;
1129    case IQ2000_OPERAND_SHAMT :
1130      value = fields->f_shamt;
1131      break;
1132
1133    default :
1134      /* xgettext:c-format */
1135      fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"),
1136		       opindex);
1137      abort ();
1138  }
1139
1140  return value;
1141}
1142
1143void iq2000_cgen_set_int_operand  (CGEN_CPU_DESC, int, CGEN_FIELDS *, int);
1144void iq2000_cgen_set_vma_operand  (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma);
1145
1146/* Stuffing values in cgen_fields is handled by a collection of functions.
1147   They are distinguished by the type of the VALUE argument they accept.
1148   TODO: floating point, inlining support, remove cases where argument type
1149   not appropriate.  */
1150
1151void
1152iq2000_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
1153			     int opindex,
1154			     CGEN_FIELDS * fields,
1155			     int value)
1156{
1157  switch (opindex)
1158    {
1159    case IQ2000_OPERAND__INDEX :
1160      fields->f_index = value;
1161      break;
1162    case IQ2000_OPERAND_BASE :
1163      fields->f_rs = value;
1164      break;
1165    case IQ2000_OPERAND_BASEOFF :
1166      fields->f_imm = value;
1167      break;
1168    case IQ2000_OPERAND_BITNUM :
1169      fields->f_rt = value;
1170      break;
1171    case IQ2000_OPERAND_BYTECOUNT :
1172      fields->f_bytecount = value;
1173      break;
1174    case IQ2000_OPERAND_CAM_Y :
1175      fields->f_cam_y = value;
1176      break;
1177    case IQ2000_OPERAND_CAM_Z :
1178      fields->f_cam_z = value;
1179      break;
1180    case IQ2000_OPERAND_CM_3FUNC :
1181      fields->f_cm_3func = value;
1182      break;
1183    case IQ2000_OPERAND_CM_3Z :
1184      fields->f_cm_3z = value;
1185      break;
1186    case IQ2000_OPERAND_CM_4FUNC :
1187      fields->f_cm_4func = value;
1188      break;
1189    case IQ2000_OPERAND_CM_4Z :
1190      fields->f_cm_4z = value;
1191      break;
1192    case IQ2000_OPERAND_COUNT :
1193      fields->f_count = value;
1194      break;
1195    case IQ2000_OPERAND_EXECODE :
1196      fields->f_excode = value;
1197      break;
1198    case IQ2000_OPERAND_HI16 :
1199      fields->f_imm = value;
1200      break;
1201    case IQ2000_OPERAND_IMM :
1202      fields->f_imm = value;
1203      break;
1204    case IQ2000_OPERAND_JMPTARG :
1205      fields->f_jtarg = value;
1206      break;
1207    case IQ2000_OPERAND_JMPTARGQ10 :
1208      fields->f_jtargq10 = value;
1209      break;
1210    case IQ2000_OPERAND_LO16 :
1211      fields->f_imm = value;
1212      break;
1213    case IQ2000_OPERAND_MASK :
1214      fields->f_mask = value;
1215      break;
1216    case IQ2000_OPERAND_MASKL :
1217      fields->f_maskl = value;
1218      break;
1219    case IQ2000_OPERAND_MASKQ10 :
1220      fields->f_maskq10 = value;
1221      break;
1222    case IQ2000_OPERAND_MASKR :
1223      fields->f_rs = value;
1224      break;
1225    case IQ2000_OPERAND_MLO16 :
1226      fields->f_imm = value;
1227      break;
1228    case IQ2000_OPERAND_OFFSET :
1229      fields->f_offset = value;
1230      break;
1231    case IQ2000_OPERAND_RD :
1232      fields->f_rd = value;
1233      break;
1234    case IQ2000_OPERAND_RD_RS :
1235      fields->f_rd_rs = value;
1236      break;
1237    case IQ2000_OPERAND_RD_RT :
1238      fields->f_rd_rt = value;
1239      break;
1240    case IQ2000_OPERAND_RS :
1241      fields->f_rs = value;
1242      break;
1243    case IQ2000_OPERAND_RT :
1244      fields->f_rt = value;
1245      break;
1246    case IQ2000_OPERAND_RT_RS :
1247      fields->f_rt_rs = value;
1248      break;
1249    case IQ2000_OPERAND_SHAMT :
1250      fields->f_shamt = value;
1251      break;
1252
1253    default :
1254      /* xgettext:c-format */
1255      fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"),
1256		       opindex);
1257      abort ();
1258  }
1259}
1260
1261void
1262iq2000_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
1263			     int opindex,
1264			     CGEN_FIELDS * fields,
1265			     bfd_vma value)
1266{
1267  switch (opindex)
1268    {
1269    case IQ2000_OPERAND__INDEX :
1270      fields->f_index = value;
1271      break;
1272    case IQ2000_OPERAND_BASE :
1273      fields->f_rs = value;
1274      break;
1275    case IQ2000_OPERAND_BASEOFF :
1276      fields->f_imm = value;
1277      break;
1278    case IQ2000_OPERAND_BITNUM :
1279      fields->f_rt = value;
1280      break;
1281    case IQ2000_OPERAND_BYTECOUNT :
1282      fields->f_bytecount = value;
1283      break;
1284    case IQ2000_OPERAND_CAM_Y :
1285      fields->f_cam_y = value;
1286      break;
1287    case IQ2000_OPERAND_CAM_Z :
1288      fields->f_cam_z = value;
1289      break;
1290    case IQ2000_OPERAND_CM_3FUNC :
1291      fields->f_cm_3func = value;
1292      break;
1293    case IQ2000_OPERAND_CM_3Z :
1294      fields->f_cm_3z = value;
1295      break;
1296    case IQ2000_OPERAND_CM_4FUNC :
1297      fields->f_cm_4func = value;
1298      break;
1299    case IQ2000_OPERAND_CM_4Z :
1300      fields->f_cm_4z = value;
1301      break;
1302    case IQ2000_OPERAND_COUNT :
1303      fields->f_count = value;
1304      break;
1305    case IQ2000_OPERAND_EXECODE :
1306      fields->f_excode = value;
1307      break;
1308    case IQ2000_OPERAND_HI16 :
1309      fields->f_imm = value;
1310      break;
1311    case IQ2000_OPERAND_IMM :
1312      fields->f_imm = value;
1313      break;
1314    case IQ2000_OPERAND_JMPTARG :
1315      fields->f_jtarg = value;
1316      break;
1317    case IQ2000_OPERAND_JMPTARGQ10 :
1318      fields->f_jtargq10 = value;
1319      break;
1320    case IQ2000_OPERAND_LO16 :
1321      fields->f_imm = value;
1322      break;
1323    case IQ2000_OPERAND_MASK :
1324      fields->f_mask = value;
1325      break;
1326    case IQ2000_OPERAND_MASKL :
1327      fields->f_maskl = value;
1328      break;
1329    case IQ2000_OPERAND_MASKQ10 :
1330      fields->f_maskq10 = value;
1331      break;
1332    case IQ2000_OPERAND_MASKR :
1333      fields->f_rs = value;
1334      break;
1335    case IQ2000_OPERAND_MLO16 :
1336      fields->f_imm = value;
1337      break;
1338    case IQ2000_OPERAND_OFFSET :
1339      fields->f_offset = value;
1340      break;
1341    case IQ2000_OPERAND_RD :
1342      fields->f_rd = value;
1343      break;
1344    case IQ2000_OPERAND_RD_RS :
1345      fields->f_rd_rs = value;
1346      break;
1347    case IQ2000_OPERAND_RD_RT :
1348      fields->f_rd_rt = value;
1349      break;
1350    case IQ2000_OPERAND_RS :
1351      fields->f_rs = value;
1352      break;
1353    case IQ2000_OPERAND_RT :
1354      fields->f_rt = value;
1355      break;
1356    case IQ2000_OPERAND_RT_RS :
1357      fields->f_rt_rs = value;
1358      break;
1359    case IQ2000_OPERAND_SHAMT :
1360      fields->f_shamt = value;
1361      break;
1362
1363    default :
1364      /* xgettext:c-format */
1365      fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"),
1366		       opindex);
1367      abort ();
1368  }
1369}
1370
1371/* Function to call before using the instruction builder tables.  */
1372
1373void
1374iq2000_cgen_init_ibld_table (CGEN_CPU_DESC cd)
1375{
1376  cd->insert_handlers = & iq2000_cgen_insert_handlers[0];
1377  cd->extract_handlers = & iq2000_cgen_extract_handlers[0];
1378
1379  cd->insert_operand = iq2000_cgen_insert_operand;
1380  cd->extract_operand = iq2000_cgen_extract_operand;
1381
1382  cd->get_int_operand = iq2000_cgen_get_int_operand;
1383  cd->set_int_operand = iq2000_cgen_set_int_operand;
1384  cd->get_vma_operand = iq2000_cgen_get_vma_operand;
1385  cd->set_vma_operand = iq2000_cgen_set_vma_operand;
1386}
1387