1 /* Instruction building/extraction support for ip2k. -*- 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) 1996-2014 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 "ip2k-desc.h"
34 #include "ip2k-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
47 static 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);
50 static const char * insert_insn_normal
51 (CGEN_CPU_DESC, const CGEN_INSN *,
52 CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
53 static 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 *);
57 static 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
61 static 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
65 static CGEN_INLINE void insert_1
66 (CGEN_CPU_DESC, unsigned long, int, int, int, unsigned char *);
67 static CGEN_INLINE int fill_cache
68 (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, bfd_vma);
69 static 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
79 static CGEN_INLINE void
insert_1(CGEN_CPU_DESC cd,unsigned long value,int start,int length,int word_length,unsigned char * bufp)80 insert_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
121 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)122 insert_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;
211
212 if (CGEN_INSN_LSB0_P)
213 shift = (word_offset + start + 1) - length;
214 else
215 shift = total_length - (word_offset + start + length);
216 *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);
217 }
218
219 #else /* ! CGEN_INT_INSN_P */
220
221 {
222 unsigned char *bufp = (unsigned char *) buffer + word_offset / 8;
223
224 insert_1 (cd, value, start, length, word_length, bufp);
225 }
226
227 #endif /* ! CGEN_INT_INSN_P */
228
229 return NULL;
230 }
231
232 /* Default insn builder (insert handler).
233 The instruction is recorded in CGEN_INT_INSN_P byte order (meaning
234 that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is
235 recorded in host byte order, otherwise BUFFER is an array of bytes
236 and the value is recorded in target byte order).
237 The result is an error message or NULL if success. */
238
239 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)240 insert_insn_normal (CGEN_CPU_DESC cd,
241 const CGEN_INSN * insn,
242 CGEN_FIELDS * fields,
243 CGEN_INSN_BYTES_PTR buffer,
244 bfd_vma pc)
245 {
246 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
247 unsigned long value;
248 const CGEN_SYNTAX_CHAR_TYPE * syn;
249
250 CGEN_INIT_INSERT (cd);
251 value = CGEN_INSN_BASE_VALUE (insn);
252
253 /* If we're recording insns as numbers (rather than a string of bytes),
254 target byte order handling is deferred until later. */
255
256 #if CGEN_INT_INSN_P
257
258 put_insn_int_value (cd, buffer, cd->base_insn_bitsize,
259 CGEN_FIELDS_BITSIZE (fields), value);
260
261 #else
262
263 cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize,
264 (unsigned) CGEN_FIELDS_BITSIZE (fields)),
265 value);
266
267 #endif /* ! CGEN_INT_INSN_P */
268
269 /* ??? It would be better to scan the format's fields.
270 Still need to be able to insert a value based on the operand though;
271 e.g. storing a branch displacement that got resolved later.
272 Needs more thought first. */
273
274 for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn)
275 {
276 const char *errmsg;
277
278 if (CGEN_SYNTAX_CHAR_P (* syn))
279 continue;
280
281 errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
282 fields, buffer, pc);
283 if (errmsg)
284 return errmsg;
285 }
286
287 return NULL;
288 }
289
290 #if CGEN_INT_INSN_P
291 /* Cover function to store an insn value into an integral insn. Must go here
292 because it needs <prefix>-desc.h for CGEN_INT_INSN_P. */
293
294 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)295 put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
296 CGEN_INSN_BYTES_PTR buf,
297 int length,
298 int insn_length,
299 CGEN_INSN_INT value)
300 {
301 /* For architectures with insns smaller than the base-insn-bitsize,
302 length may be too big. */
303 if (length > insn_length)
304 *buf = value;
305 else
306 {
307 int shift = insn_length - length;
308 /* Written this way to avoid undefined behaviour. */
309 CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;
310
311 *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift);
312 }
313 }
314 #endif
315
316 /* Operand extraction. */
317
318 #if ! CGEN_INT_INSN_P
319
320 /* Subroutine of extract_normal.
321 Ensure sufficient bytes are cached in EX_INFO.
322 OFFSET is the offset in bytes from the start of the insn of the value.
323 BYTES is the length of the needed value.
324 Returns 1 for success, 0 for failure. */
325
326 static CGEN_INLINE int
fill_cache(CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,CGEN_EXTRACT_INFO * ex_info,int offset,int bytes,bfd_vma pc)327 fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
328 CGEN_EXTRACT_INFO *ex_info,
329 int offset,
330 int bytes,
331 bfd_vma pc)
332 {
333 /* It's doubtful that the middle part has already been fetched so
334 we don't optimize that case. kiss. */
335 unsigned int mask;
336 disassemble_info *info = (disassemble_info *) ex_info->dis_info;
337
338 /* First do a quick check. */
339 mask = (1 << bytes) - 1;
340 if (((ex_info->valid >> offset) & mask) == mask)
341 return 1;
342
343 /* Search for the first byte we need to read. */
344 for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1)
345 if (! (mask & ex_info->valid))
346 break;
347
348 if (bytes)
349 {
350 int status;
351
352 pc += offset;
353 status = (*info->read_memory_func)
354 (pc, ex_info->insn_bytes + offset, bytes, info);
355
356 if (status != 0)
357 {
358 (*info->memory_error_func) (status, pc, info);
359 return 0;
360 }
361
362 ex_info->valid |= ((1 << bytes) - 1) << offset;
363 }
364
365 return 1;
366 }
367
368 /* Subroutine of extract_normal. */
369
370 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)371 extract_1 (CGEN_CPU_DESC cd,
372 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
373 int start,
374 int length,
375 int word_length,
376 unsigned char *bufp,
377 bfd_vma pc ATTRIBUTE_UNUSED)
378 {
379 unsigned long x;
380 int shift;
381
382 x = cgen_get_insn_value (cd, bufp, word_length);
383
384 if (CGEN_INSN_LSB0_P)
385 shift = (start + 1) - length;
386 else
387 shift = (word_length - (start + length));
388 return x >> shift;
389 }
390
391 #endif /* ! CGEN_INT_INSN_P */
392
393 /* Default extraction routine.
394
395 INSN_VALUE is the first base_insn_bitsize bits of the insn in host order,
396 or sometimes less for cases like the m32r where the base insn size is 32
397 but some insns are 16 bits.
398 ATTRS is a mask of the boolean attributes. We only need `SIGNED',
399 but for generality we take a bitmask of all of them.
400 WORD_OFFSET is the offset in bits from the start of the insn of the value.
401 WORD_LENGTH is the length of the word in bits in which the value resides.
402 START is the starting bit number in the word, architecture origin.
403 LENGTH is the length of VALUE in bits.
404 TOTAL_LENGTH is the total length of the insn in bits.
405
406 Returns 1 for success, 0 for failure. */
407
408 /* ??? The return code isn't properly used. wip. */
409
410 /* ??? This doesn't handle bfd_vma's. Create another function when
411 necessary. */
412
413 static int
extract_normal(CGEN_CPU_DESC cd,CGEN_EXTRACT_INFO * ex_info,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,bfd_vma pc,long * valuep)414 extract_normal (CGEN_CPU_DESC cd,
415 #if ! CGEN_INT_INSN_P
416 CGEN_EXTRACT_INFO *ex_info,
417 #else
418 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
419 #endif
420 CGEN_INSN_INT insn_value,
421 unsigned int attrs,
422 unsigned int word_offset,
423 unsigned int start,
424 unsigned int length,
425 unsigned int word_length,
426 unsigned int total_length,
427 #if ! CGEN_INT_INSN_P
428 bfd_vma pc,
429 #else
430 bfd_vma pc ATTRIBUTE_UNUSED,
431 #endif
432 long *valuep)
433 {
434 long value, mask;
435
436 /* If LENGTH is zero, this operand doesn't contribute to the value
437 so give it a standard value of zero. */
438 if (length == 0)
439 {
440 *valuep = 0;
441 return 1;
442 }
443
444 if (word_length > 8 * sizeof (CGEN_INSN_INT))
445 abort ();
446
447 /* For architectures with insns smaller than the insn-base-bitsize,
448 word_length may be too big. */
449 if (cd->min_insn_bitsize < cd->base_insn_bitsize)
450 {
451 if (word_offset + word_length > total_length)
452 word_length = total_length - word_offset;
453 }
454
455 /* Does the value reside in INSN_VALUE, and at the right alignment? */
456
457 if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length))
458 {
459 if (CGEN_INSN_LSB0_P)
460 value = insn_value >> ((word_offset + start + 1) - length);
461 else
462 value = insn_value >> (total_length - ( word_offset + start + length));
463 }
464
465 #if ! CGEN_INT_INSN_P
466
467 else
468 {
469 unsigned char *bufp = ex_info->insn_bytes + word_offset / 8;
470
471 if (word_length > 8 * sizeof (CGEN_INSN_INT))
472 abort ();
473
474 if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)
475 return 0;
476
477 value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);
478 }
479
480 #endif /* ! CGEN_INT_INSN_P */
481
482 /* Written this way to avoid undefined behaviour. */
483 mask = (((1L << (length - 1)) - 1) << 1) | 1;
484
485 value &= mask;
486 /* sign extend? */
487 if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)
488 && (value & (1L << (length - 1))))
489 value |= ~mask;
490
491 *valuep = value;
492
493 return 1;
494 }
495
496 /* Default insn extractor.
497
498 INSN_VALUE is the first base_insn_bitsize bits, translated to host order.
499 The extracted fields are stored in FIELDS.
500 EX_INFO is used to handle reading variable length insns.
501 Return the length of the insn in bits, or 0 if no match,
502 or -1 if an error occurs fetching data (memory_error_func will have
503 been called). */
504
505 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)506 extract_insn_normal (CGEN_CPU_DESC cd,
507 const CGEN_INSN *insn,
508 CGEN_EXTRACT_INFO *ex_info,
509 CGEN_INSN_INT insn_value,
510 CGEN_FIELDS *fields,
511 bfd_vma pc)
512 {
513 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
514 const CGEN_SYNTAX_CHAR_TYPE *syn;
515
516 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
517
518 CGEN_INIT_EXTRACT (cd);
519
520 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
521 {
522 int length;
523
524 if (CGEN_SYNTAX_CHAR_P (*syn))
525 continue;
526
527 length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
528 ex_info, insn_value, fields, pc);
529 if (length <= 0)
530 return length;
531 }
532
533 /* We recognized and successfully extracted this insn. */
534 return CGEN_INSN_BITSIZE (insn);
535 }
536
537 /* Machine generated code added here. */
538
539 const char * ip2k_cgen_insert_operand
540 (CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
541
542 /* Main entry point for operand insertion.
543
544 This function is basically just a big switch statement. Earlier versions
545 used tables to look up the function to use, but
546 - if the table contains both assembler and disassembler functions then
547 the disassembler contains much of the assembler and vice-versa,
548 - there's a lot of inlining possibilities as things grow,
549 - using a switch statement avoids the function call overhead.
550
551 This function could be moved into `parse_insn_normal', but keeping it
552 separate makes clear the interface between `parse_insn_normal' and each of
553 the handlers. It's also needed by GAS to insert operands that couldn't be
554 resolved during parsing. */
555
556 const char *
ip2k_cgen_insert_operand(CGEN_CPU_DESC cd,int opindex,CGEN_FIELDS * fields,CGEN_INSN_BYTES_PTR buffer,bfd_vma pc ATTRIBUTE_UNUSED)557 ip2k_cgen_insert_operand (CGEN_CPU_DESC cd,
558 int opindex,
559 CGEN_FIELDS * fields,
560 CGEN_INSN_BYTES_PTR buffer,
561 bfd_vma pc ATTRIBUTE_UNUSED)
562 {
563 const char * errmsg = NULL;
564 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
565
566 switch (opindex)
567 {
568 case IP2K_OPERAND_ADDR16CJP :
569 errmsg = insert_normal (cd, fields->f_addr16cjp, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, buffer);
570 break;
571 case IP2K_OPERAND_ADDR16H :
572 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
573 break;
574 case IP2K_OPERAND_ADDR16L :
575 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
576 break;
577 case IP2K_OPERAND_ADDR16P :
578 errmsg = insert_normal (cd, fields->f_page3, 0, 0, 2, 3, 16, total_length, buffer);
579 break;
580 case IP2K_OPERAND_BITNO :
581 errmsg = insert_normal (cd, fields->f_bitno, 0, 0, 11, 3, 16, total_length, buffer);
582 break;
583 case IP2K_OPERAND_CBIT :
584 break;
585 case IP2K_OPERAND_DCBIT :
586 break;
587 case IP2K_OPERAND_FR :
588 errmsg = insert_normal (cd, fields->f_reg, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, buffer);
589 break;
590 case IP2K_OPERAND_LIT8 :
591 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
592 break;
593 case IP2K_OPERAND_PABITS :
594 break;
595 case IP2K_OPERAND_RETI3 :
596 errmsg = insert_normal (cd, fields->f_reti3, 0, 0, 2, 3, 16, total_length, buffer);
597 break;
598 case IP2K_OPERAND_ZBIT :
599 break;
600
601 default :
602 /* xgettext:c-format */
603 fprintf (stderr, _("Unrecognized field %d while building insn.\n"),
604 opindex);
605 abort ();
606 }
607
608 return errmsg;
609 }
610
611 int ip2k_cgen_extract_operand
612 (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
613
614 /* Main entry point for operand extraction.
615 The result is <= 0 for error, >0 for success.
616 ??? Actual values aren't well defined right now.
617
618 This function is basically just a big switch statement. Earlier versions
619 used tables to look up the function to use, but
620 - if the table contains both assembler and disassembler functions then
621 the disassembler contains much of the assembler and vice-versa,
622 - there's a lot of inlining possibilities as things grow,
623 - using a switch statement avoids the function call overhead.
624
625 This function could be moved into `print_insn_normal', but keeping it
626 separate makes clear the interface between `print_insn_normal' and each of
627 the handlers. */
628
629 int
ip2k_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)630 ip2k_cgen_extract_operand (CGEN_CPU_DESC cd,
631 int opindex,
632 CGEN_EXTRACT_INFO *ex_info,
633 CGEN_INSN_INT insn_value,
634 CGEN_FIELDS * fields,
635 bfd_vma pc)
636 {
637 /* Assume success (for those operands that are nops). */
638 int length = 1;
639 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
640
641 switch (opindex)
642 {
643 case IP2K_OPERAND_ADDR16CJP :
644 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, pc, & fields->f_addr16cjp);
645 break;
646 case IP2K_OPERAND_ADDR16H :
647 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8);
648 break;
649 case IP2K_OPERAND_ADDR16L :
650 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8);
651 break;
652 case IP2K_OPERAND_ADDR16P :
653 length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_page3);
654 break;
655 case IP2K_OPERAND_BITNO :
656 length = extract_normal (cd, ex_info, insn_value, 0, 0, 11, 3, 16, total_length, pc, & fields->f_bitno);
657 break;
658 case IP2K_OPERAND_CBIT :
659 break;
660 case IP2K_OPERAND_DCBIT :
661 break;
662 case IP2K_OPERAND_FR :
663 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, pc, & fields->f_reg);
664 break;
665 case IP2K_OPERAND_LIT8 :
666 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8);
667 break;
668 case IP2K_OPERAND_PABITS :
669 break;
670 case IP2K_OPERAND_RETI3 :
671 length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_reti3);
672 break;
673 case IP2K_OPERAND_ZBIT :
674 break;
675
676 default :
677 /* xgettext:c-format */
678 fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"),
679 opindex);
680 abort ();
681 }
682
683 return length;
684 }
685
686 cgen_insert_fn * const ip2k_cgen_insert_handlers[] =
687 {
688 insert_insn_normal,
689 };
690
691 cgen_extract_fn * const ip2k_cgen_extract_handlers[] =
692 {
693 extract_insn_normal,
694 };
695
696 int ip2k_cgen_get_int_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
697 bfd_vma ip2k_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
698
699 /* Getting values from cgen_fields is handled by a collection of functions.
700 They are distinguished by the type of the VALUE argument they return.
701 TODO: floating point, inlining support, remove cases where result type
702 not appropriate. */
703
704 int
ip2k_cgen_get_int_operand(CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,int opindex,const CGEN_FIELDS * fields)705 ip2k_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
706 int opindex,
707 const CGEN_FIELDS * fields)
708 {
709 int value;
710
711 switch (opindex)
712 {
713 case IP2K_OPERAND_ADDR16CJP :
714 value = fields->f_addr16cjp;
715 break;
716 case IP2K_OPERAND_ADDR16H :
717 value = fields->f_imm8;
718 break;
719 case IP2K_OPERAND_ADDR16L :
720 value = fields->f_imm8;
721 break;
722 case IP2K_OPERAND_ADDR16P :
723 value = fields->f_page3;
724 break;
725 case IP2K_OPERAND_BITNO :
726 value = fields->f_bitno;
727 break;
728 case IP2K_OPERAND_CBIT :
729 value = 0;
730 break;
731 case IP2K_OPERAND_DCBIT :
732 value = 0;
733 break;
734 case IP2K_OPERAND_FR :
735 value = fields->f_reg;
736 break;
737 case IP2K_OPERAND_LIT8 :
738 value = fields->f_imm8;
739 break;
740 case IP2K_OPERAND_PABITS :
741 value = 0;
742 break;
743 case IP2K_OPERAND_RETI3 :
744 value = fields->f_reti3;
745 break;
746 case IP2K_OPERAND_ZBIT :
747 value = 0;
748 break;
749
750 default :
751 /* xgettext:c-format */
752 fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"),
753 opindex);
754 abort ();
755 }
756
757 return value;
758 }
759
760 bfd_vma
ip2k_cgen_get_vma_operand(CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,int opindex,const CGEN_FIELDS * fields)761 ip2k_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
762 int opindex,
763 const CGEN_FIELDS * fields)
764 {
765 bfd_vma value;
766
767 switch (opindex)
768 {
769 case IP2K_OPERAND_ADDR16CJP :
770 value = fields->f_addr16cjp;
771 break;
772 case IP2K_OPERAND_ADDR16H :
773 value = fields->f_imm8;
774 break;
775 case IP2K_OPERAND_ADDR16L :
776 value = fields->f_imm8;
777 break;
778 case IP2K_OPERAND_ADDR16P :
779 value = fields->f_page3;
780 break;
781 case IP2K_OPERAND_BITNO :
782 value = fields->f_bitno;
783 break;
784 case IP2K_OPERAND_CBIT :
785 value = 0;
786 break;
787 case IP2K_OPERAND_DCBIT :
788 value = 0;
789 break;
790 case IP2K_OPERAND_FR :
791 value = fields->f_reg;
792 break;
793 case IP2K_OPERAND_LIT8 :
794 value = fields->f_imm8;
795 break;
796 case IP2K_OPERAND_PABITS :
797 value = 0;
798 break;
799 case IP2K_OPERAND_RETI3 :
800 value = fields->f_reti3;
801 break;
802 case IP2K_OPERAND_ZBIT :
803 value = 0;
804 break;
805
806 default :
807 /* xgettext:c-format */
808 fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"),
809 opindex);
810 abort ();
811 }
812
813 return value;
814 }
815
816 void ip2k_cgen_set_int_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, int);
817 void ip2k_cgen_set_vma_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma);
818
819 /* Stuffing values in cgen_fields is handled by a collection of functions.
820 They are distinguished by the type of the VALUE argument they accept.
821 TODO: floating point, inlining support, remove cases where argument type
822 not appropriate. */
823
824 void
ip2k_cgen_set_int_operand(CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,int opindex,CGEN_FIELDS * fields,int value)825 ip2k_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
826 int opindex,
827 CGEN_FIELDS * fields,
828 int value)
829 {
830 switch (opindex)
831 {
832 case IP2K_OPERAND_ADDR16CJP :
833 fields->f_addr16cjp = value;
834 break;
835 case IP2K_OPERAND_ADDR16H :
836 fields->f_imm8 = value;
837 break;
838 case IP2K_OPERAND_ADDR16L :
839 fields->f_imm8 = value;
840 break;
841 case IP2K_OPERAND_ADDR16P :
842 fields->f_page3 = value;
843 break;
844 case IP2K_OPERAND_BITNO :
845 fields->f_bitno = value;
846 break;
847 case IP2K_OPERAND_CBIT :
848 break;
849 case IP2K_OPERAND_DCBIT :
850 break;
851 case IP2K_OPERAND_FR :
852 fields->f_reg = value;
853 break;
854 case IP2K_OPERAND_LIT8 :
855 fields->f_imm8 = value;
856 break;
857 case IP2K_OPERAND_PABITS :
858 break;
859 case IP2K_OPERAND_RETI3 :
860 fields->f_reti3 = value;
861 break;
862 case IP2K_OPERAND_ZBIT :
863 break;
864
865 default :
866 /* xgettext:c-format */
867 fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"),
868 opindex);
869 abort ();
870 }
871 }
872
873 void
ip2k_cgen_set_vma_operand(CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,int opindex,CGEN_FIELDS * fields,bfd_vma value)874 ip2k_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
875 int opindex,
876 CGEN_FIELDS * fields,
877 bfd_vma value)
878 {
879 switch (opindex)
880 {
881 case IP2K_OPERAND_ADDR16CJP :
882 fields->f_addr16cjp = value;
883 break;
884 case IP2K_OPERAND_ADDR16H :
885 fields->f_imm8 = value;
886 break;
887 case IP2K_OPERAND_ADDR16L :
888 fields->f_imm8 = value;
889 break;
890 case IP2K_OPERAND_ADDR16P :
891 fields->f_page3 = value;
892 break;
893 case IP2K_OPERAND_BITNO :
894 fields->f_bitno = value;
895 break;
896 case IP2K_OPERAND_CBIT :
897 break;
898 case IP2K_OPERAND_DCBIT :
899 break;
900 case IP2K_OPERAND_FR :
901 fields->f_reg = value;
902 break;
903 case IP2K_OPERAND_LIT8 :
904 fields->f_imm8 = value;
905 break;
906 case IP2K_OPERAND_PABITS :
907 break;
908 case IP2K_OPERAND_RETI3 :
909 fields->f_reti3 = value;
910 break;
911 case IP2K_OPERAND_ZBIT :
912 break;
913
914 default :
915 /* xgettext:c-format */
916 fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"),
917 opindex);
918 abort ();
919 }
920 }
921
922 /* Function to call before using the instruction builder tables. */
923
924 void
ip2k_cgen_init_ibld_table(CGEN_CPU_DESC cd)925 ip2k_cgen_init_ibld_table (CGEN_CPU_DESC cd)
926 {
927 cd->insert_handlers = & ip2k_cgen_insert_handlers[0];
928 cd->extract_handlers = & ip2k_cgen_extract_handlers[0];
929
930 cd->insert_operand = ip2k_cgen_insert_operand;
931 cd->extract_operand = ip2k_cgen_extract_operand;
932
933 cd->get_int_operand = ip2k_cgen_get_int_operand;
934 cd->set_int_operand = ip2k_cgen_set_int_operand;
935 cd->get_vma_operand = ip2k_cgen_get_vma_operand;
936 cd->set_vma_operand = ip2k_cgen_set_vma_operand;
937 }
938