1 /* Instruction building/extraction support for or1k. -*- 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) 1996-2016 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 "or1k-desc.h"
34 #include "or1k-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_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
246 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)247 insert_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
301 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)302 put_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
333 static CGEN_INLINE int
fill_cache(CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,CGEN_EXTRACT_INFO * ex_info,int offset,int bytes,bfd_vma pc)334 fill_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
377 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)378 extract_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
420 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)421 extract_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
512 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)513 extract_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
546 const char * or1k_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
563 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)564 or1k_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 OR1K_OPERAND_DISP26 :
576 {
577 long value = fields->f_disp26;
578 value = ((SI) (((value) - (pc))) >> (2));
579 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 25, 26, 32, total_length, buffer);
580 }
581 break;
582 case OR1K_OPERAND_RA :
583 errmsg = insert_normal (cd, fields->f_r2, 0, 0, 20, 5, 32, total_length, buffer);
584 break;
585 case OR1K_OPERAND_RADF :
586 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer);
587 break;
588 case OR1K_OPERAND_RASF :
589 errmsg = insert_normal (cd, fields->f_r2, 0, 0, 20, 5, 32, total_length, buffer);
590 break;
591 case OR1K_OPERAND_RB :
592 errmsg = insert_normal (cd, fields->f_r3, 0, 0, 15, 5, 32, total_length, buffer);
593 break;
594 case OR1K_OPERAND_RBDF :
595 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer);
596 break;
597 case OR1K_OPERAND_RBSF :
598 errmsg = insert_normal (cd, fields->f_r3, 0, 0, 15, 5, 32, total_length, buffer);
599 break;
600 case OR1K_OPERAND_RD :
601 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer);
602 break;
603 case OR1K_OPERAND_RDDF :
604 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer);
605 break;
606 case OR1K_OPERAND_RDSF :
607 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer);
608 break;
609 case OR1K_OPERAND_SIMM16 :
610 errmsg = insert_normal (cd, fields->f_simm16, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_SIGN_OPT), 0, 15, 16, 32, total_length, buffer);
611 break;
612 case OR1K_OPERAND_SIMM16_SPLIT :
613 {
614 {
615 FLD (f_imm16_25_5) = ((((INT) (FLD (f_simm16_split)) >> (11))) & (31));
616 FLD (f_imm16_10_11) = ((FLD (f_simm16_split)) & (2047));
617 }
618 errmsg = insert_normal (cd, fields->f_imm16_25_5, 0, 0, 25, 5, 32, total_length, buffer);
619 if (errmsg)
620 break;
621 errmsg = insert_normal (cd, fields->f_imm16_10_11, 0, 0, 10, 11, 32, total_length, buffer);
622 if (errmsg)
623 break;
624 }
625 break;
626 case OR1K_OPERAND_UIMM16 :
627 errmsg = insert_normal (cd, fields->f_uimm16, 0, 0, 15, 16, 32, total_length, buffer);
628 break;
629 case OR1K_OPERAND_UIMM16_SPLIT :
630 {
631 {
632 FLD (f_imm16_25_5) = ((((UINT) (FLD (f_uimm16_split)) >> (11))) & (31));
633 FLD (f_imm16_10_11) = ((FLD (f_uimm16_split)) & (2047));
634 }
635 errmsg = insert_normal (cd, fields->f_imm16_25_5, 0, 0, 25, 5, 32, total_length, buffer);
636 if (errmsg)
637 break;
638 errmsg = insert_normal (cd, fields->f_imm16_10_11, 0, 0, 10, 11, 32, total_length, buffer);
639 if (errmsg)
640 break;
641 }
642 break;
643 case OR1K_OPERAND_UIMM6 :
644 errmsg = insert_normal (cd, fields->f_uimm6, 0, 0, 5, 6, 32, total_length, buffer);
645 break;
646
647 default :
648 /* xgettext:c-format */
649 fprintf (stderr, _("Unrecognized field %d while building insn.\n"),
650 opindex);
651 abort ();
652 }
653
654 return errmsg;
655 }
656
657 int or1k_cgen_extract_operand
658 (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
659
660 /* Main entry point for operand extraction.
661 The result is <= 0 for error, >0 for success.
662 ??? Actual values aren't well defined right now.
663
664 This function is basically just a big switch statement. Earlier versions
665 used tables to look up the function to use, but
666 - if the table contains both assembler and disassembler functions then
667 the disassembler contains much of the assembler and vice-versa,
668 - there's a lot of inlining possibilities as things grow,
669 - using a switch statement avoids the function call overhead.
670
671 This function could be moved into `print_insn_normal', but keeping it
672 separate makes clear the interface between `print_insn_normal' and each of
673 the handlers. */
674
675 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)676 or1k_cgen_extract_operand (CGEN_CPU_DESC cd,
677 int opindex,
678 CGEN_EXTRACT_INFO *ex_info,
679 CGEN_INSN_INT insn_value,
680 CGEN_FIELDS * fields,
681 bfd_vma pc)
682 {
683 /* Assume success (for those operands that are nops). */
684 int length = 1;
685 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
686
687 switch (opindex)
688 {
689 case OR1K_OPERAND_DISP26 :
690 {
691 long value;
692 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);
693 value = ((((value) << (2))) + (pc));
694 fields->f_disp26 = value;
695 }
696 break;
697 case OR1K_OPERAND_RA :
698 length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_r2);
699 break;
700 case OR1K_OPERAND_RADF :
701 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1);
702 break;
703 case OR1K_OPERAND_RASF :
704 length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_r2);
705 break;
706 case OR1K_OPERAND_RB :
707 length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_r3);
708 break;
709 case OR1K_OPERAND_RBDF :
710 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1);
711 break;
712 case OR1K_OPERAND_RBSF :
713 length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_r3);
714 break;
715 case OR1K_OPERAND_RD :
716 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1);
717 break;
718 case OR1K_OPERAND_RDDF :
719 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1);
720 break;
721 case OR1K_OPERAND_RDSF :
722 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1);
723 break;
724 case OR1K_OPERAND_SIMM16 :
725 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);
726 break;
727 case OR1K_OPERAND_SIMM16_SPLIT :
728 {
729 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_imm16_25_5);
730 if (length <= 0) break;
731 length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 11, 32, total_length, pc, & fields->f_imm16_10_11);
732 if (length <= 0) break;
733 FLD (f_simm16_split) = ((HI) (UINT) (((((FLD (f_imm16_25_5)) << (11))) | (FLD (f_imm16_10_11)))));
734 }
735 break;
736 case OR1K_OPERAND_UIMM16 :
737 length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_uimm16);
738 break;
739 case OR1K_OPERAND_UIMM16_SPLIT :
740 {
741 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_imm16_25_5);
742 if (length <= 0) break;
743 length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 11, 32, total_length, pc, & fields->f_imm16_10_11);
744 if (length <= 0) break;
745 FLD (f_uimm16_split) = ((UHI) (UINT) (((((FLD (f_imm16_25_5)) << (11))) | (FLD (f_imm16_10_11)))));
746 }
747 break;
748 case OR1K_OPERAND_UIMM6 :
749 length = extract_normal (cd, ex_info, insn_value, 0, 0, 5, 6, 32, total_length, pc, & fields->f_uimm6);
750 break;
751
752 default :
753 /* xgettext:c-format */
754 fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"),
755 opindex);
756 abort ();
757 }
758
759 return length;
760 }
761
762 cgen_insert_fn * const or1k_cgen_insert_handlers[] =
763 {
764 insert_insn_normal,
765 };
766
767 cgen_extract_fn * const or1k_cgen_extract_handlers[] =
768 {
769 extract_insn_normal,
770 };
771
772 int or1k_cgen_get_int_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
773 bfd_vma or1k_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
774
775 /* Getting values from cgen_fields is handled by a collection of functions.
776 They are distinguished by the type of the VALUE argument they return.
777 TODO: floating point, inlining support, remove cases where result type
778 not appropriate. */
779
780 int
or1k_cgen_get_int_operand(CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,int opindex,const CGEN_FIELDS * fields)781 or1k_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
782 int opindex,
783 const CGEN_FIELDS * fields)
784 {
785 int value;
786
787 switch (opindex)
788 {
789 case OR1K_OPERAND_DISP26 :
790 value = fields->f_disp26;
791 break;
792 case OR1K_OPERAND_RA :
793 value = fields->f_r2;
794 break;
795 case OR1K_OPERAND_RADF :
796 value = fields->f_r1;
797 break;
798 case OR1K_OPERAND_RASF :
799 value = fields->f_r2;
800 break;
801 case OR1K_OPERAND_RB :
802 value = fields->f_r3;
803 break;
804 case OR1K_OPERAND_RBDF :
805 value = fields->f_r1;
806 break;
807 case OR1K_OPERAND_RBSF :
808 value = fields->f_r3;
809 break;
810 case OR1K_OPERAND_RD :
811 value = fields->f_r1;
812 break;
813 case OR1K_OPERAND_RDDF :
814 value = fields->f_r1;
815 break;
816 case OR1K_OPERAND_RDSF :
817 value = fields->f_r1;
818 break;
819 case OR1K_OPERAND_SIMM16 :
820 value = fields->f_simm16;
821 break;
822 case OR1K_OPERAND_SIMM16_SPLIT :
823 value = fields->f_simm16_split;
824 break;
825 case OR1K_OPERAND_UIMM16 :
826 value = fields->f_uimm16;
827 break;
828 case OR1K_OPERAND_UIMM16_SPLIT :
829 value = fields->f_uimm16_split;
830 break;
831 case OR1K_OPERAND_UIMM6 :
832 value = fields->f_uimm6;
833 break;
834
835 default :
836 /* xgettext:c-format */
837 fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"),
838 opindex);
839 abort ();
840 }
841
842 return value;
843 }
844
845 bfd_vma
or1k_cgen_get_vma_operand(CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,int opindex,const CGEN_FIELDS * fields)846 or1k_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
847 int opindex,
848 const CGEN_FIELDS * fields)
849 {
850 bfd_vma value;
851
852 switch (opindex)
853 {
854 case OR1K_OPERAND_DISP26 :
855 value = fields->f_disp26;
856 break;
857 case OR1K_OPERAND_RA :
858 value = fields->f_r2;
859 break;
860 case OR1K_OPERAND_RADF :
861 value = fields->f_r1;
862 break;
863 case OR1K_OPERAND_RASF :
864 value = fields->f_r2;
865 break;
866 case OR1K_OPERAND_RB :
867 value = fields->f_r3;
868 break;
869 case OR1K_OPERAND_RBDF :
870 value = fields->f_r1;
871 break;
872 case OR1K_OPERAND_RBSF :
873 value = fields->f_r3;
874 break;
875 case OR1K_OPERAND_RD :
876 value = fields->f_r1;
877 break;
878 case OR1K_OPERAND_RDDF :
879 value = fields->f_r1;
880 break;
881 case OR1K_OPERAND_RDSF :
882 value = fields->f_r1;
883 break;
884 case OR1K_OPERAND_SIMM16 :
885 value = fields->f_simm16;
886 break;
887 case OR1K_OPERAND_SIMM16_SPLIT :
888 value = fields->f_simm16_split;
889 break;
890 case OR1K_OPERAND_UIMM16 :
891 value = fields->f_uimm16;
892 break;
893 case OR1K_OPERAND_UIMM16_SPLIT :
894 value = fields->f_uimm16_split;
895 break;
896 case OR1K_OPERAND_UIMM6 :
897 value = fields->f_uimm6;
898 break;
899
900 default :
901 /* xgettext:c-format */
902 fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"),
903 opindex);
904 abort ();
905 }
906
907 return value;
908 }
909
910 void or1k_cgen_set_int_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, int);
911 void or1k_cgen_set_vma_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma);
912
913 /* Stuffing values in cgen_fields is handled by a collection of functions.
914 They are distinguished by the type of the VALUE argument they accept.
915 TODO: floating point, inlining support, remove cases where argument type
916 not appropriate. */
917
918 void
or1k_cgen_set_int_operand(CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,int opindex,CGEN_FIELDS * fields,int value)919 or1k_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
920 int opindex,
921 CGEN_FIELDS * fields,
922 int value)
923 {
924 switch (opindex)
925 {
926 case OR1K_OPERAND_DISP26 :
927 fields->f_disp26 = value;
928 break;
929 case OR1K_OPERAND_RA :
930 fields->f_r2 = value;
931 break;
932 case OR1K_OPERAND_RADF :
933 fields->f_r1 = value;
934 break;
935 case OR1K_OPERAND_RASF :
936 fields->f_r2 = value;
937 break;
938 case OR1K_OPERAND_RB :
939 fields->f_r3 = value;
940 break;
941 case OR1K_OPERAND_RBDF :
942 fields->f_r1 = value;
943 break;
944 case OR1K_OPERAND_RBSF :
945 fields->f_r3 = value;
946 break;
947 case OR1K_OPERAND_RD :
948 fields->f_r1 = value;
949 break;
950 case OR1K_OPERAND_RDDF :
951 fields->f_r1 = value;
952 break;
953 case OR1K_OPERAND_RDSF :
954 fields->f_r1 = value;
955 break;
956 case OR1K_OPERAND_SIMM16 :
957 fields->f_simm16 = value;
958 break;
959 case OR1K_OPERAND_SIMM16_SPLIT :
960 fields->f_simm16_split = value;
961 break;
962 case OR1K_OPERAND_UIMM16 :
963 fields->f_uimm16 = value;
964 break;
965 case OR1K_OPERAND_UIMM16_SPLIT :
966 fields->f_uimm16_split = value;
967 break;
968 case OR1K_OPERAND_UIMM6 :
969 fields->f_uimm6 = value;
970 break;
971
972 default :
973 /* xgettext:c-format */
974 fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"),
975 opindex);
976 abort ();
977 }
978 }
979
980 void
or1k_cgen_set_vma_operand(CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,int opindex,CGEN_FIELDS * fields,bfd_vma value)981 or1k_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
982 int opindex,
983 CGEN_FIELDS * fields,
984 bfd_vma value)
985 {
986 switch (opindex)
987 {
988 case OR1K_OPERAND_DISP26 :
989 fields->f_disp26 = value;
990 break;
991 case OR1K_OPERAND_RA :
992 fields->f_r2 = value;
993 break;
994 case OR1K_OPERAND_RADF :
995 fields->f_r1 = value;
996 break;
997 case OR1K_OPERAND_RASF :
998 fields->f_r2 = value;
999 break;
1000 case OR1K_OPERAND_RB :
1001 fields->f_r3 = value;
1002 break;
1003 case OR1K_OPERAND_RBDF :
1004 fields->f_r1 = value;
1005 break;
1006 case OR1K_OPERAND_RBSF :
1007 fields->f_r3 = value;
1008 break;
1009 case OR1K_OPERAND_RD :
1010 fields->f_r1 = value;
1011 break;
1012 case OR1K_OPERAND_RDDF :
1013 fields->f_r1 = value;
1014 break;
1015 case OR1K_OPERAND_RDSF :
1016 fields->f_r1 = value;
1017 break;
1018 case OR1K_OPERAND_SIMM16 :
1019 fields->f_simm16 = value;
1020 break;
1021 case OR1K_OPERAND_SIMM16_SPLIT :
1022 fields->f_simm16_split = value;
1023 break;
1024 case OR1K_OPERAND_UIMM16 :
1025 fields->f_uimm16 = value;
1026 break;
1027 case OR1K_OPERAND_UIMM16_SPLIT :
1028 fields->f_uimm16_split = value;
1029 break;
1030 case OR1K_OPERAND_UIMM6 :
1031 fields->f_uimm6 = value;
1032 break;
1033
1034 default :
1035 /* xgettext:c-format */
1036 fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"),
1037 opindex);
1038 abort ();
1039 }
1040 }
1041
1042 /* Function to call before using the instruction builder tables. */
1043
1044 void
or1k_cgen_init_ibld_table(CGEN_CPU_DESC cd)1045 or1k_cgen_init_ibld_table (CGEN_CPU_DESC cd)
1046 {
1047 cd->insert_handlers = & or1k_cgen_insert_handlers[0];
1048 cd->extract_handlers = & or1k_cgen_extract_handlers[0];
1049
1050 cd->insert_operand = or1k_cgen_insert_operand;
1051 cd->extract_operand = or1k_cgen_extract_operand;
1052
1053 cd->get_int_operand = or1k_cgen_get_int_operand;
1054 cd->set_int_operand = or1k_cgen_set_int_operand;
1055 cd->get_vma_operand = or1k_cgen_get_vma_operand;
1056 cd->set_vma_operand = or1k_cgen_set_vma_operand;
1057 }
1058