1 /* Assembler interface for targets using CGEN. -*- C -*-
2 CGEN: Cpu tools GENerator
3
4 THIS FILE IS MACHINE GENERATED WITH CGEN.
5 - the resultant file is machine generated, cgen-asm.in isn't
6
7 Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
8
9 This file is part of the GNU Binutils and GDB, the GNU debugger.
10
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2, or (at your option)
14 any later version.
15
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software Foundation, Inc.,
23 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24
25 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
26 Keep that in mind. */
27
28 #include "sysdep.h"
29 #include <stdio.h>
30 #include "ansidecl.h"
31 #include "bfd.h"
32 #include "symcat.h"
33 #include "frv-desc.h"
34 #include "frv-opc.h"
35 #include "opintl.h"
36 #include "xregex.h"
37 #include "libiberty.h"
38 #include "safe-ctype.h"
39
40 #undef min
41 #define min(a,b) ((a) < (b) ? (a) : (b))
42 #undef max
43 #define max(a,b) ((a) > (b) ? (a) : (b))
44
45 static const char * parse_insn_normal
46 (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *);
47
48 /* -- assembler routines inserted here. */
49
50 /* -- asm.c */
51 static const char * parse_ulo16
52 PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));
53 static const char * parse_uslo16
54 PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));
55 static const char * parse_uhi16
56 PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));
57 static long parse_register_number
58 PARAMS ((const char **));
59 static const char * parse_spr
60 PARAMS ((CGEN_CPU_DESC, const char **, CGEN_KEYWORD *, long *));
61 static const char * parse_d12
62 PARAMS ((CGEN_CPU_DESC, const char **, int, long *));
63 static const char * parse_s12
64 PARAMS ((CGEN_CPU_DESC, const char **, int, long *));
65 static const char * parse_u12
66 PARAMS ((CGEN_CPU_DESC, const char **, int, long *));
67 static const char * parse_even_register
68 PARAMS ((CGEN_CPU_DESC, const char **, CGEN_KEYWORD *, long *));
69 static const char * parse_A0
70 PARAMS ((CGEN_CPU_DESC, const char **, int, long *));
71 static const char * parse_A1
72 PARAMS ((CGEN_CPU_DESC, const char **, int, long *));
73 static const char * parse_A
74 PARAMS ((CGEN_CPU_DESC, const char **, int, long *, long));
75
76 static const char *
parse_ulo16(cd,strp,opindex,valuep)77 parse_ulo16 (cd, strp, opindex, valuep)
78 CGEN_CPU_DESC cd;
79 const char **strp;
80 int opindex;
81 unsigned long *valuep;
82 {
83 const char *errmsg;
84 enum cgen_parse_operand_result result_type;
85 bfd_vma value;
86
87 if (**strp == '#' || **strp == '%')
88 {
89 if (strncasecmp (*strp + 1, "lo(", 3) == 0)
90 {
91 *strp += 4;
92 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_LO16,
93 &result_type, &value);
94 if (**strp != ')')
95 return "missing `)'";
96 ++*strp;
97 if (errmsg == NULL
98 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
99 value &= 0xffff;
100 *valuep = value;
101 return errmsg;
102 }
103 if (strncasecmp (*strp + 1, "gprello(", 8) == 0)
104 {
105 *strp += 9;
106 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_GPRELLO,
107 &result_type, &value);
108 if (**strp != ')')
109 return "missing ')'";
110 ++*strp;
111 if (errmsg == NULL
112 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
113 value &= 0xffff;
114 *valuep = value;
115 return errmsg;
116 }
117 else if (strncasecmp (*strp + 1, "gotlo(", 6) == 0)
118 {
119 *strp += 7;
120 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_GOTLO,
121 &result_type, &value);
122 if (**strp != ')')
123 return "missing ')'";
124 ++*strp;
125 if (errmsg == NULL
126 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
127 value &= 0xffff;
128 *valuep = value;
129 return errmsg;
130 }
131 else if (strncasecmp (*strp + 1, "gotfuncdesclo(", 14) == 0)
132 {
133 *strp += 15;
134 errmsg = cgen_parse_address (cd, strp, opindex,
135 BFD_RELOC_FRV_FUNCDESC_GOTLO,
136 &result_type, &value);
137 if (**strp != ')')
138 return "missing ')'";
139 ++*strp;
140 if (errmsg == NULL
141 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
142 value &= 0xffff;
143 *valuep = value;
144 return errmsg;
145 }
146 else if (strncasecmp (*strp + 1, "gotofflo(", 9) == 0)
147 {
148 *strp += 10;
149 errmsg = cgen_parse_address (cd, strp, opindex,
150 BFD_RELOC_FRV_GOTOFFLO,
151 &result_type, &value);
152 if (**strp != ')')
153 return "missing ')'";
154 ++*strp;
155 if (errmsg == NULL
156 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
157 value &= 0xffff;
158 *valuep = value;
159 return errmsg;
160 }
161 else if (strncasecmp (*strp + 1, "gotofffuncdesclo(", 17) == 0)
162 {
163 *strp += 18;
164 errmsg = cgen_parse_address (cd, strp, opindex,
165 BFD_RELOC_FRV_FUNCDESC_GOTOFFLO,
166 &result_type, &value);
167 if (**strp != ')')
168 return "missing ')'";
169 ++*strp;
170 if (errmsg == NULL
171 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
172 value &= 0xffff;
173 *valuep = value;
174 return errmsg;
175 }
176 }
177 return cgen_parse_signed_integer (cd, strp, opindex, valuep);
178 }
179
180 static const char *
parse_uslo16(cd,strp,opindex,valuep)181 parse_uslo16 (cd, strp, opindex, valuep)
182 CGEN_CPU_DESC cd;
183 const char **strp;
184 int opindex;
185 unsigned long *valuep;
186 {
187 const char *errmsg;
188 enum cgen_parse_operand_result result_type;
189 bfd_vma value;
190
191 if (**strp == '#' || **strp == '%')
192 {
193 if (strncasecmp (*strp + 1, "lo(", 3) == 0)
194 {
195 *strp += 4;
196 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_LO16,
197 &result_type, &value);
198 if (**strp != ')')
199 return "missing `)'";
200 ++*strp;
201 if (errmsg == NULL
202 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
203 value &= 0xffff;
204 *valuep = value;
205 return errmsg;
206 }
207 else if (strncasecmp (*strp + 1, "gprello(", 8) == 0)
208 {
209 *strp += 9;
210 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_GPRELLO,
211 &result_type, &value);
212 if (**strp != ')')
213 return "missing ')'";
214 ++*strp;
215 if (errmsg == NULL
216 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
217 value &= 0xffff;
218 *valuep = value;
219 return errmsg;
220 }
221 else if (strncasecmp (*strp + 1, "gotlo(", 6) == 0)
222 {
223 *strp += 7;
224 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_GOTLO,
225 &result_type, &value);
226 if (**strp != ')')
227 return "missing ')'";
228 ++*strp;
229 if (errmsg == NULL
230 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
231 value &= 0xffff;
232 *valuep = value;
233 return errmsg;
234 }
235 else if (strncasecmp (*strp + 1, "gotfuncdesclo(", 14) == 0)
236 {
237 *strp += 15;
238 errmsg = cgen_parse_address (cd, strp, opindex,
239 BFD_RELOC_FRV_FUNCDESC_GOTLO,
240 &result_type, &value);
241 if (**strp != ')')
242 return "missing ')'";
243 ++*strp;
244 if (errmsg == NULL
245 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
246 value &= 0xffff;
247 *valuep = value;
248 return errmsg;
249 }
250 else if (strncasecmp (*strp + 1, "gotofflo(", 9) == 0)
251 {
252 *strp += 10;
253 errmsg = cgen_parse_address (cd, strp, opindex,
254 BFD_RELOC_FRV_GOTOFFLO,
255 &result_type, &value);
256 if (**strp != ')')
257 return "missing ')'";
258 ++*strp;
259 if (errmsg == NULL
260 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
261 value &= 0xffff;
262 *valuep = value;
263 return errmsg;
264 }
265 else if (strncasecmp (*strp + 1, "gotofffuncdesclo(", 17) == 0)
266 {
267 *strp += 18;
268 errmsg = cgen_parse_address (cd, strp, opindex,
269 BFD_RELOC_FRV_FUNCDESC_GOTOFFLO,
270 &result_type, &value);
271 if (**strp != ')')
272 return "missing ')'";
273 ++*strp;
274 if (errmsg == NULL
275 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
276 value &= 0xffff;
277 *valuep = value;
278 return errmsg;
279 }
280 }
281 return cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
282 }
283
284 static const char *
parse_uhi16(cd,strp,opindex,valuep)285 parse_uhi16 (cd, strp, opindex, valuep)
286 CGEN_CPU_DESC cd;
287 const char **strp;
288 int opindex;
289 unsigned long *valuep;
290 {
291 const char *errmsg;
292 enum cgen_parse_operand_result result_type;
293 bfd_vma value;
294
295 if (**strp == '#' || **strp == '%')
296 {
297 if (strncasecmp (*strp + 1, "hi(", 3) == 0)
298 {
299 *strp += 4;
300 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_HI16,
301 &result_type, &value);
302 if (**strp != ')')
303 return "missing `)'";
304 ++*strp;
305 if (errmsg == NULL
306 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
307 value >>= 16;
308 *valuep = value;
309 return errmsg;
310 }
311 else if (strncasecmp (*strp + 1, "gprelhi(", 8) == 0)
312 {
313 *strp += 9;
314 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_GPRELHI,
315 &result_type, &value);
316 if (**strp != ')')
317 return "missing ')'";
318 ++*strp;
319 if (errmsg == NULL
320 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
321 value >>= 16;
322 *valuep = value;
323 return errmsg;
324 }
325 else if (strncasecmp (*strp + 1, "gothi(", 6) == 0)
326 {
327 *strp += 7;
328 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_GOTHI,
329 &result_type, &value);
330 if (**strp != ')')
331 return "missing ')'";
332 ++*strp;
333 if (errmsg == NULL
334 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
335 value >>= 16;
336 *valuep = value;
337 return errmsg;
338 }
339 else if (strncasecmp (*strp + 1, "gotfuncdeschi(", 14) == 0)
340 {
341 *strp += 15;
342 errmsg = cgen_parse_address (cd, strp, opindex,
343 BFD_RELOC_FRV_FUNCDESC_GOTHI,
344 &result_type, &value);
345 if (**strp != ')')
346 return "missing ')'";
347 ++*strp;
348 if (errmsg == NULL
349 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
350 value >>= 16;
351 *valuep = value;
352 return errmsg;
353 }
354 else if (strncasecmp (*strp + 1, "gotoffhi(", 9) == 0)
355 {
356 *strp += 10;
357 errmsg = cgen_parse_address (cd, strp, opindex,
358 BFD_RELOC_FRV_GOTOFFHI,
359 &result_type, &value);
360 if (**strp != ')')
361 return "missing ')'";
362 ++*strp;
363 if (errmsg == NULL
364 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
365 value >>= 16;
366 *valuep = value;
367 return errmsg;
368 }
369 else if (strncasecmp (*strp + 1, "gotofffuncdeschi(", 17) == 0)
370 {
371 *strp += 18;
372 errmsg = cgen_parse_address (cd, strp, opindex,
373 BFD_RELOC_FRV_FUNCDESC_GOTOFFHI,
374 &result_type, &value);
375 if (**strp != ')')
376 return "missing ')'";
377 ++*strp;
378 if (errmsg == NULL
379 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER)
380 value >>= 16;
381 *valuep = value;
382 return errmsg;
383 }
384 }
385 return cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
386 }
387
388 static long
parse_register_number(strp)389 parse_register_number (strp)
390 const char **strp;
391 {
392 int regno;
393 if (**strp < '0' || **strp > '9')
394 return -1; /* error */
395
396 regno = **strp - '0';
397 for (++*strp; **strp >= '0' && **strp <= '9'; ++*strp)
398 regno = regno * 10 + (**strp - '0');
399
400 return regno;
401 }
402
403 static const char *
parse_spr(cd,strp,table,valuep)404 parse_spr (cd, strp, table, valuep)
405 CGEN_CPU_DESC cd;
406 const char **strp;
407 CGEN_KEYWORD * table;
408 long *valuep;
409 {
410 const char *save_strp;
411 long regno;
412
413 /* Check for spr index notation. */
414 if (strncasecmp (*strp, "spr[", 4) == 0)
415 {
416 *strp += 4;
417 regno = parse_register_number (strp);
418 if (**strp != ']')
419 return "missing `]'";
420 ++*strp;
421 if (! spr_valid (regno))
422 return "Special purpose register number is out of range";
423 *valuep = regno;
424 return NULL;
425 }
426
427 save_strp = *strp;
428 regno = parse_register_number (strp);
429 if (regno != -1)
430 {
431 if (! spr_valid (regno))
432 return "Special purpose register number is out of range";
433 *valuep = regno;
434 return NULL;
435 }
436
437 *strp = save_strp;
438 return cgen_parse_keyword (cd, strp, table, valuep);
439 }
440
441 static const char *
parse_d12(cd,strp,opindex,valuep)442 parse_d12 (cd, strp, opindex, valuep)
443 CGEN_CPU_DESC cd;
444 const char **strp;
445 int opindex;
446 long *valuep;
447 {
448 const char *errmsg;
449 enum cgen_parse_operand_result result_type;
450 bfd_vma value;
451
452 /* Check for small data reference. */
453 if (**strp == '#' || **strp == '%')
454 {
455 if (strncasecmp (*strp + 1, "gprel12(", 8) == 0)
456 {
457 *strp += 9;
458 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_GPREL12,
459 &result_type, &value);
460 if (**strp != ')')
461 return "missing `)'";
462 ++*strp;
463 *valuep = value;
464 return errmsg;
465 }
466 else if (strncasecmp (*strp + 1, "got12(", 6) == 0)
467 {
468 *strp += 7;
469 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_GOT12,
470 &result_type, &value);
471 if (**strp != ')')
472 return "missing ')'";
473 ++*strp;
474 *valuep = value;
475 return errmsg;
476 }
477 else if (strncasecmp (*strp + 1, "gotfuncdesc12(", 14) == 0)
478 {
479 *strp += 15;
480 errmsg = cgen_parse_address (cd, strp, opindex,
481 BFD_RELOC_FRV_FUNCDESC_GOT12,
482 &result_type, &value);
483 if (**strp != ')')
484 return "missing ')'";
485 ++*strp;
486 *valuep = value;
487 return errmsg;
488 }
489 else if (strncasecmp (*strp + 1, "gotoff12(", 9) == 0)
490 {
491 *strp += 10;
492 errmsg = cgen_parse_address (cd, strp, opindex,
493 BFD_RELOC_FRV_GOTOFF12,
494 &result_type, &value);
495 if (**strp != ')')
496 return "missing ')'";
497 ++*strp;
498 *valuep = value;
499 return errmsg;
500 }
501 else if (strncasecmp (*strp + 1, "gotofffuncdesc12(", 17) == 0)
502 {
503 *strp += 18;
504 errmsg = cgen_parse_address (cd, strp, opindex,
505 BFD_RELOC_FRV_FUNCDESC_GOTOFF12,
506 &result_type, &value);
507 if (**strp != ')')
508 return "missing ')'";
509 ++*strp;
510 *valuep = value;
511 return errmsg;
512 }
513 }
514 return cgen_parse_signed_integer (cd, strp, opindex, valuep);
515 }
516
517 static const char *
parse_s12(cd,strp,opindex,valuep)518 parse_s12 (cd, strp, opindex, valuep)
519 CGEN_CPU_DESC cd;
520 const char **strp;
521 int opindex;
522 long *valuep;
523 {
524 const char *errmsg;
525 enum cgen_parse_operand_result result_type;
526 bfd_vma value;
527
528 /* Check for small data reference. */
529 if ((**strp == '#' || **strp == '%')
530 && strncasecmp (*strp + 1, "gprel12(", 8) == 0)
531 {
532 *strp += 9;
533 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_GPREL12,
534 &result_type, &value);
535 if (**strp != ')')
536 return "missing `)'";
537 ++*strp;
538 *valuep = value;
539 return errmsg;
540 }
541 else if ((**strp == '#' || **strp == '%')
542 && strncasecmp (*strp + 1, "got12(", 6) == 0)
543 {
544 *strp += 7;
545 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_GOT12,
546 &result_type, &value);
547 if (**strp != ')')
548 return "missing ')'";
549 ++*strp;
550 *valuep = value;
551 return errmsg;
552 }
553 else if ((**strp == '#' || **strp == '%')
554 && strncasecmp (*strp + 1, "gotfuncdesc12(", 14) == 0)
555 {
556 *strp += 15;
557 errmsg = cgen_parse_address (cd, strp, opindex,
558 BFD_RELOC_FRV_FUNCDESC_GOT12,
559 &result_type, &value);
560 if (**strp != ')')
561 return "missing ')'";
562 ++*strp;
563 *valuep = value;
564 return errmsg;
565 }
566 else if ((**strp == '#' || **strp == '%')
567 && strncasecmp (*strp + 1, "gotoff12(", 9) == 0)
568 {
569 *strp += 10;
570 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_GOTOFF12,
571 &result_type, &value);
572 if (**strp != ')')
573 return "missing ')'";
574 ++*strp;
575 *valuep = value;
576 return errmsg;
577 }
578 else if ((**strp == '#' || **strp == '%')
579 && strncasecmp (*strp + 1, "gotofffuncdesc12(", 17) == 0)
580 {
581 *strp += 18;
582 errmsg = cgen_parse_address (cd, strp, opindex,
583 BFD_RELOC_FRV_FUNCDESC_GOTOFF12,
584 &result_type, &value);
585 if (**strp != ')')
586 return "missing ')'";
587 ++*strp;
588 *valuep = value;
589 return errmsg;
590 }
591 else
592 {
593 if (**strp == '#')
594 ++*strp;
595 return cgen_parse_signed_integer (cd, strp, opindex, valuep);
596 }
597 }
598
599 static const char *
parse_u12(cd,strp,opindex,valuep)600 parse_u12 (cd, strp, opindex, valuep)
601 CGEN_CPU_DESC cd;
602 const char **strp;
603 int opindex;
604 long *valuep;
605 {
606 const char *errmsg;
607 enum cgen_parse_operand_result result_type;
608 bfd_vma value;
609
610 /* Check for small data reference. */
611 if ((**strp == '#' || **strp == '%')
612 && strncasecmp (*strp + 1, "gprel12(", 8) == 0)
613 {
614 *strp += 9;
615 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_FRV_GPRELU12,
616 &result_type, &value);
617 if (**strp != ')')
618 return "missing `)'";
619 ++*strp;
620 *valuep = value;
621 return errmsg;
622 }
623 else
624 {
625 if (**strp == '#')
626 ++*strp;
627 return cgen_parse_signed_integer (cd, strp, opindex, valuep);
628 }
629 }
630
631 static const char *
parse_A(cd,strp,opindex,valuep,A)632 parse_A (cd, strp, opindex, valuep, A)
633 CGEN_CPU_DESC cd;
634 const char **strp;
635 int opindex;
636 long *valuep;
637 long A;
638 {
639 const char *errmsg;
640
641 if (**strp == '#')
642 ++*strp;
643
644 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep);
645 if (errmsg)
646 return errmsg;
647
648 if (*valuep != A)
649 return "Value of A operand must be 0 or 1";
650
651 return NULL;
652 }
653
654 static const char *
parse_A0(cd,strp,opindex,valuep)655 parse_A0 (cd, strp, opindex, valuep)
656 CGEN_CPU_DESC cd;
657 const char **strp;
658 int opindex;
659 long *valuep;
660 {
661 return parse_A (cd, strp, opindex, valuep, 0);
662 }
663
664 static const char *
parse_A1(cd,strp,opindex,valuep)665 parse_A1 (cd, strp, opindex, valuep)
666 CGEN_CPU_DESC cd;
667 const char **strp;
668 int opindex;
669 long *valuep;
670 {
671 return parse_A (cd, strp, opindex, valuep, 1);
672 }
673
674 static const char *
parse_even_register(cd,strP,tableP,valueP)675 parse_even_register (cd, strP, tableP, valueP)
676 CGEN_CPU_DESC cd;
677 const char ** strP;
678 CGEN_KEYWORD * tableP;
679 long * valueP;
680 {
681 const char * errmsg;
682 const char * saved_star_strP = * strP;
683
684 errmsg = cgen_parse_keyword (cd, strP, tableP, valueP);
685
686 if (errmsg == NULL && ((* valueP) & 1))
687 {
688 errmsg = _("register number must be even");
689 * strP = saved_star_strP;
690 }
691
692 return errmsg;
693 }
694 /* -- */
695
696 const char * frv_cgen_parse_operand
697 PARAMS ((CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *));
698
699 /* Main entry point for operand parsing.
700
701 This function is basically just a big switch statement. Earlier versions
702 used tables to look up the function to use, but
703 - if the table contains both assembler and disassembler functions then
704 the disassembler contains much of the assembler and vice-versa,
705 - there's a lot of inlining possibilities as things grow,
706 - using a switch statement avoids the function call overhead.
707
708 This function could be moved into `parse_insn_normal', but keeping it
709 separate makes clear the interface between `parse_insn_normal' and each of
710 the handlers. */
711
712 const char *
frv_cgen_parse_operand(cd,opindex,strp,fields)713 frv_cgen_parse_operand (cd, opindex, strp, fields)
714 CGEN_CPU_DESC cd;
715 int opindex;
716 const char ** strp;
717 CGEN_FIELDS * fields;
718 {
719 const char * errmsg = NULL;
720 /* Used by scalar operands that still need to be parsed. */
721 long junk ATTRIBUTE_UNUSED;
722
723 switch (opindex)
724 {
725 case FRV_OPERAND_A0 :
726 errmsg = parse_A0 (cd, strp, FRV_OPERAND_A0, &fields->f_A);
727 break;
728 case FRV_OPERAND_A1 :
729 errmsg = parse_A1 (cd, strp, FRV_OPERAND_A1, &fields->f_A);
730 break;
731 case FRV_OPERAND_ACC40SI :
732 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_acc_names, & fields->f_ACC40Si);
733 break;
734 case FRV_OPERAND_ACC40SK :
735 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_acc_names, & fields->f_ACC40Sk);
736 break;
737 case FRV_OPERAND_ACC40UI :
738 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_acc_names, & fields->f_ACC40Ui);
739 break;
740 case FRV_OPERAND_ACC40UK :
741 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_acc_names, & fields->f_ACC40Uk);
742 break;
743 case FRV_OPERAND_ACCGI :
744 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_accg_names, & fields->f_ACCGi);
745 break;
746 case FRV_OPERAND_ACCGK :
747 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_accg_names, & fields->f_ACCGk);
748 break;
749 case FRV_OPERAND_CCI :
750 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_cccr_names, & fields->f_CCi);
751 break;
752 case FRV_OPERAND_CPRDOUBLEK :
753 errmsg = parse_even_register (cd, strp, & frv_cgen_opval_cpr_names, & fields->f_CPRk);
754 break;
755 case FRV_OPERAND_CPRI :
756 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_cpr_names, & fields->f_CPRi);
757 break;
758 case FRV_OPERAND_CPRJ :
759 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_cpr_names, & fields->f_CPRj);
760 break;
761 case FRV_OPERAND_CPRK :
762 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_cpr_names, & fields->f_CPRk);
763 break;
764 case FRV_OPERAND_CRI :
765 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_cccr_names, & fields->f_CRi);
766 break;
767 case FRV_OPERAND_CRJ :
768 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_cccr_names, & fields->f_CRj);
769 break;
770 case FRV_OPERAND_CRJ_FLOAT :
771 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_cccr_names, & fields->f_CRj_float);
772 break;
773 case FRV_OPERAND_CRJ_INT :
774 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_cccr_names, & fields->f_CRj_int);
775 break;
776 case FRV_OPERAND_CRK :
777 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_cccr_names, & fields->f_CRk);
778 break;
779 case FRV_OPERAND_FCCI_1 :
780 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_fccr_names, & fields->f_FCCi_1);
781 break;
782 case FRV_OPERAND_FCCI_2 :
783 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_fccr_names, & fields->f_FCCi_2);
784 break;
785 case FRV_OPERAND_FCCI_3 :
786 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_fccr_names, & fields->f_FCCi_3);
787 break;
788 case FRV_OPERAND_FCCK :
789 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_fccr_names, & fields->f_FCCk);
790 break;
791 case FRV_OPERAND_FRDOUBLEI :
792 errmsg = parse_even_register (cd, strp, & frv_cgen_opval_fr_names, & fields->f_FRi);
793 break;
794 case FRV_OPERAND_FRDOUBLEJ :
795 errmsg = parse_even_register (cd, strp, & frv_cgen_opval_fr_names, & fields->f_FRj);
796 break;
797 case FRV_OPERAND_FRDOUBLEK :
798 errmsg = parse_even_register (cd, strp, & frv_cgen_opval_fr_names, & fields->f_FRk);
799 break;
800 case FRV_OPERAND_FRI :
801 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_fr_names, & fields->f_FRi);
802 break;
803 case FRV_OPERAND_FRINTI :
804 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_fr_names, & fields->f_FRi);
805 break;
806 case FRV_OPERAND_FRINTIEVEN :
807 errmsg = parse_even_register (cd, strp, & frv_cgen_opval_fr_names, & fields->f_FRi);
808 break;
809 case FRV_OPERAND_FRINTJ :
810 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_fr_names, & fields->f_FRj);
811 break;
812 case FRV_OPERAND_FRINTJEVEN :
813 errmsg = parse_even_register (cd, strp, & frv_cgen_opval_fr_names, & fields->f_FRj);
814 break;
815 case FRV_OPERAND_FRINTK :
816 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_fr_names, & fields->f_FRk);
817 break;
818 case FRV_OPERAND_FRINTKEVEN :
819 errmsg = parse_even_register (cd, strp, & frv_cgen_opval_fr_names, & fields->f_FRk);
820 break;
821 case FRV_OPERAND_FRJ :
822 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_fr_names, & fields->f_FRj);
823 break;
824 case FRV_OPERAND_FRK :
825 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_fr_names, & fields->f_FRk);
826 break;
827 case FRV_OPERAND_FRKHI :
828 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_fr_names, & fields->f_FRk);
829 break;
830 case FRV_OPERAND_FRKLO :
831 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_fr_names, & fields->f_FRk);
832 break;
833 case FRV_OPERAND_GRDOUBLEK :
834 errmsg = parse_even_register (cd, strp, & frv_cgen_opval_gr_names, & fields->f_GRk);
835 break;
836 case FRV_OPERAND_GRI :
837 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_gr_names, & fields->f_GRi);
838 break;
839 case FRV_OPERAND_GRJ :
840 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_gr_names, & fields->f_GRj);
841 break;
842 case FRV_OPERAND_GRK :
843 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_gr_names, & fields->f_GRk);
844 break;
845 case FRV_OPERAND_GRKHI :
846 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_gr_names, & fields->f_GRk);
847 break;
848 case FRV_OPERAND_GRKLO :
849 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_gr_names, & fields->f_GRk);
850 break;
851 case FRV_OPERAND_ICCI_1 :
852 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_iccr_names, & fields->f_ICCi_1);
853 break;
854 case FRV_OPERAND_ICCI_2 :
855 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_iccr_names, & fields->f_ICCi_2);
856 break;
857 case FRV_OPERAND_ICCI_3 :
858 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_iccr_names, & fields->f_ICCi_3);
859 break;
860 case FRV_OPERAND_LI :
861 errmsg = cgen_parse_unsigned_integer (cd, strp, FRV_OPERAND_LI, &fields->f_LI);
862 break;
863 case FRV_OPERAND_AE :
864 errmsg = cgen_parse_unsigned_integer (cd, strp, FRV_OPERAND_AE, &fields->f_ae);
865 break;
866 case FRV_OPERAND_CCOND :
867 errmsg = cgen_parse_unsigned_integer (cd, strp, FRV_OPERAND_CCOND, &fields->f_ccond);
868 break;
869 case FRV_OPERAND_COND :
870 errmsg = cgen_parse_unsigned_integer (cd, strp, FRV_OPERAND_COND, &fields->f_cond);
871 break;
872 case FRV_OPERAND_D12 :
873 errmsg = parse_d12 (cd, strp, FRV_OPERAND_D12, &fields->f_d12);
874 break;
875 case FRV_OPERAND_DEBUG :
876 errmsg = cgen_parse_unsigned_integer (cd, strp, FRV_OPERAND_DEBUG, &fields->f_debug);
877 break;
878 case FRV_OPERAND_EIR :
879 errmsg = cgen_parse_unsigned_integer (cd, strp, FRV_OPERAND_EIR, &fields->f_eir);
880 break;
881 case FRV_OPERAND_HINT :
882 errmsg = cgen_parse_unsigned_integer (cd, strp, FRV_OPERAND_HINT, &fields->f_hint);
883 break;
884 case FRV_OPERAND_HINT_NOT_TAKEN :
885 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_h_hint_not_taken, & fields->f_hint);
886 break;
887 case FRV_OPERAND_HINT_TAKEN :
888 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_h_hint_taken, & fields->f_hint);
889 break;
890 case FRV_OPERAND_LABEL16 :
891 {
892 bfd_vma value;
893 errmsg = cgen_parse_address (cd, strp, FRV_OPERAND_LABEL16, 0, NULL, & value);
894 fields->f_label16 = value;
895 }
896 break;
897 case FRV_OPERAND_LABEL24 :
898 {
899 bfd_vma value;
900 errmsg = cgen_parse_address (cd, strp, FRV_OPERAND_LABEL24, 0, NULL, & value);
901 fields->f_label24 = value;
902 }
903 break;
904 case FRV_OPERAND_LOCK :
905 errmsg = cgen_parse_unsigned_integer (cd, strp, FRV_OPERAND_LOCK, &fields->f_lock);
906 break;
907 case FRV_OPERAND_PACK :
908 errmsg = cgen_parse_keyword (cd, strp, & frv_cgen_opval_h_pack, & fields->f_pack);
909 break;
910 case FRV_OPERAND_S10 :
911 errmsg = cgen_parse_signed_integer (cd, strp, FRV_OPERAND_S10, &fields->f_s10);
912 break;
913 case FRV_OPERAND_S12 :
914 errmsg = parse_s12 (cd, strp, FRV_OPERAND_S12, &fields->f_d12);
915 break;
916 case FRV_OPERAND_S16 :
917 errmsg = cgen_parse_signed_integer (cd, strp, FRV_OPERAND_S16, &fields->f_s16);
918 break;
919 case FRV_OPERAND_S5 :
920 errmsg = cgen_parse_signed_integer (cd, strp, FRV_OPERAND_S5, &fields->f_s5);
921 break;
922 case FRV_OPERAND_S6 :
923 errmsg = cgen_parse_signed_integer (cd, strp, FRV_OPERAND_S6, &fields->f_s6);
924 break;
925 case FRV_OPERAND_S6_1 :
926 errmsg = cgen_parse_signed_integer (cd, strp, FRV_OPERAND_S6_1, &fields->f_s6_1);
927 break;
928 case FRV_OPERAND_SLO16 :
929 errmsg = parse_uslo16 (cd, strp, FRV_OPERAND_SLO16, &fields->f_s16);
930 break;
931 case FRV_OPERAND_SPR :
932 errmsg = parse_spr (cd, strp, & frv_cgen_opval_spr_names, & fields->f_spr);
933 break;
934 case FRV_OPERAND_U12 :
935 errmsg = parse_u12 (cd, strp, FRV_OPERAND_U12, &fields->f_u12);
936 break;
937 case FRV_OPERAND_U16 :
938 errmsg = cgen_parse_unsigned_integer (cd, strp, FRV_OPERAND_U16, &fields->f_u16);
939 break;
940 case FRV_OPERAND_U6 :
941 errmsg = cgen_parse_unsigned_integer (cd, strp, FRV_OPERAND_U6, &fields->f_u6);
942 break;
943 case FRV_OPERAND_UHI16 :
944 errmsg = parse_uhi16 (cd, strp, FRV_OPERAND_UHI16, &fields->f_u16);
945 break;
946 case FRV_OPERAND_ULO16 :
947 errmsg = parse_ulo16 (cd, strp, FRV_OPERAND_ULO16, &fields->f_u16);
948 break;
949
950 default :
951 /* xgettext:c-format */
952 fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
953 abort ();
954 }
955
956 return errmsg;
957 }
958
959 cgen_parse_fn * const frv_cgen_parse_handlers[] =
960 {
961 parse_insn_normal,
962 };
963
964 void
frv_cgen_init_asm(cd)965 frv_cgen_init_asm (cd)
966 CGEN_CPU_DESC cd;
967 {
968 frv_cgen_init_opcode_table (cd);
969 frv_cgen_init_ibld_table (cd);
970 cd->parse_handlers = & frv_cgen_parse_handlers[0];
971 cd->parse_operand = frv_cgen_parse_operand;
972 }
973
974
975
976 /* Regex construction routine.
977
978 This translates an opcode syntax string into a regex string,
979 by replacing any non-character syntax element (such as an
980 opcode) with the pattern '.*'
981
982 It then compiles the regex and stores it in the opcode, for
983 later use by frv_cgen_assemble_insn
984
985 Returns NULL for success, an error message for failure. */
986
987 char *
frv_cgen_build_insn_regex(CGEN_INSN * insn)988 frv_cgen_build_insn_regex (CGEN_INSN *insn)
989 {
990 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
991 const char *mnem = CGEN_INSN_MNEMONIC (insn);
992 char rxbuf[CGEN_MAX_RX_ELEMENTS];
993 char *rx = rxbuf;
994 const CGEN_SYNTAX_CHAR_TYPE *syn;
995 int reg_err;
996
997 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
998
999 /* Mnemonics come first in the syntax string. */
1000 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
1001 return _("missing mnemonic in syntax string");
1002 ++syn;
1003
1004 /* Generate a case sensitive regular expression that emulates case
1005 insensitive matching in the "C" locale. We cannot generate a case
1006 insensitive regular expression because in Turkish locales, 'i' and 'I'
1007 are not equal modulo case conversion. */
1008
1009 /* Copy the literal mnemonic out of the insn. */
1010 for (; *mnem; mnem++)
1011 {
1012 char c = *mnem;
1013
1014 if (ISALPHA (c))
1015 {
1016 *rx++ = '[';
1017 *rx++ = TOLOWER (c);
1018 *rx++ = TOUPPER (c);
1019 *rx++ = ']';
1020 }
1021 else
1022 *rx++ = c;
1023 }
1024
1025 /* Copy any remaining literals from the syntax string into the rx. */
1026 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
1027 {
1028 if (CGEN_SYNTAX_CHAR_P (* syn))
1029 {
1030 char c = CGEN_SYNTAX_CHAR (* syn);
1031
1032 switch (c)
1033 {
1034 /* Escape any regex metacharacters in the syntax. */
1035 case '.': case '[': case '\\':
1036 case '*': case '^': case '$':
1037
1038 #ifdef CGEN_ESCAPE_EXTENDED_REGEX
1039 case '?': case '{': case '}':
1040 case '(': case ')': case '*':
1041 case '|': case '+': case ']':
1042 #endif
1043 *rx++ = '\\';
1044 *rx++ = c;
1045 break;
1046
1047 default:
1048 if (ISALPHA (c))
1049 {
1050 *rx++ = '[';
1051 *rx++ = TOLOWER (c);
1052 *rx++ = TOUPPER (c);
1053 *rx++ = ']';
1054 }
1055 else
1056 *rx++ = c;
1057 break;
1058 }
1059 }
1060 else
1061 {
1062 /* Replace non-syntax fields with globs. */
1063 *rx++ = '.';
1064 *rx++ = '*';
1065 }
1066 }
1067
1068 /* Trailing whitespace ok. */
1069 * rx++ = '[';
1070 * rx++ = ' ';
1071 * rx++ = '\t';
1072 * rx++ = ']';
1073 * rx++ = '*';
1074
1075 /* But anchor it after that. */
1076 * rx++ = '$';
1077 * rx = '\0';
1078
1079 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
1080 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
1081
1082 if (reg_err == 0)
1083 return NULL;
1084 else
1085 {
1086 static char msg[80];
1087
1088 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
1089 regfree ((regex_t *) CGEN_INSN_RX (insn));
1090 free (CGEN_INSN_RX (insn));
1091 (CGEN_INSN_RX (insn)) = NULL;
1092 return msg;
1093 }
1094 }
1095
1096
1097 /* Default insn parser.
1098
1099 The syntax string is scanned and operands are parsed and stored in FIELDS.
1100 Relocs are queued as we go via other callbacks.
1101
1102 ??? Note that this is currently an all-or-nothing parser. If we fail to
1103 parse the instruction, we return 0 and the caller will start over from
1104 the beginning. Backtracking will be necessary in parsing subexpressions,
1105 but that can be handled there. Not handling backtracking here may get
1106 expensive in the case of the m68k. Deal with later.
1107
1108 Returns NULL for success, an error message for failure. */
1109
1110 static const char *
parse_insn_normal(CGEN_CPU_DESC cd,const CGEN_INSN * insn,const char ** strp,CGEN_FIELDS * fields)1111 parse_insn_normal (CGEN_CPU_DESC cd,
1112 const CGEN_INSN *insn,
1113 const char **strp,
1114 CGEN_FIELDS *fields)
1115 {
1116 /* ??? Runtime added insns not handled yet. */
1117 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
1118 const char *str = *strp;
1119 const char *errmsg;
1120 const char *p;
1121 const CGEN_SYNTAX_CHAR_TYPE * syn;
1122 #ifdef CGEN_MNEMONIC_OPERANDS
1123 /* FIXME: wip */
1124 int past_opcode_p;
1125 #endif
1126
1127 /* For now we assume the mnemonic is first (there are no leading operands).
1128 We can parse it without needing to set up operand parsing.
1129 GAS's input scrubber will ensure mnemonics are lowercase, but we may
1130 not be called from GAS. */
1131 p = CGEN_INSN_MNEMONIC (insn);
1132 while (*p && TOLOWER (*p) == TOLOWER (*str))
1133 ++p, ++str;
1134
1135 if (* p)
1136 return _("unrecognized instruction");
1137
1138 #ifndef CGEN_MNEMONIC_OPERANDS
1139 if (* str && ! ISSPACE (* str))
1140 return _("unrecognized instruction");
1141 #endif
1142
1143 CGEN_INIT_PARSE (cd);
1144 cgen_init_parse_operand (cd);
1145 #ifdef CGEN_MNEMONIC_OPERANDS
1146 past_opcode_p = 0;
1147 #endif
1148
1149 /* We don't check for (*str != '\0') here because we want to parse
1150 any trailing fake arguments in the syntax string. */
1151 syn = CGEN_SYNTAX_STRING (syntax);
1152
1153 /* Mnemonics come first for now, ensure valid string. */
1154 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
1155 abort ();
1156
1157 ++syn;
1158
1159 while (* syn != 0)
1160 {
1161 /* Non operand chars must match exactly. */
1162 if (CGEN_SYNTAX_CHAR_P (* syn))
1163 {
1164 /* FIXME: While we allow for non-GAS callers above, we assume the
1165 first char after the mnemonic part is a space. */
1166 /* FIXME: We also take inappropriate advantage of the fact that
1167 GAS's input scrubber will remove extraneous blanks. */
1168 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn)))
1169 {
1170 #ifdef CGEN_MNEMONIC_OPERANDS
1171 if (CGEN_SYNTAX_CHAR(* syn) == ' ')
1172 past_opcode_p = 1;
1173 #endif
1174 ++ syn;
1175 ++ str;
1176 }
1177 else if (*str)
1178 {
1179 /* Syntax char didn't match. Can't be this insn. */
1180 static char msg [80];
1181
1182 /* xgettext:c-format */
1183 sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
1184 CGEN_SYNTAX_CHAR(*syn), *str);
1185 return msg;
1186 }
1187 else
1188 {
1189 /* Ran out of input. */
1190 static char msg [80];
1191
1192 /* xgettext:c-format */
1193 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
1194 CGEN_SYNTAX_CHAR(*syn));
1195 return msg;
1196 }
1197 continue;
1198 }
1199
1200 /* We have an operand of some sort. */
1201 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn),
1202 &str, fields);
1203 if (errmsg)
1204 return errmsg;
1205
1206 /* Done with this operand, continue with next one. */
1207 ++ syn;
1208 }
1209
1210 /* If we're at the end of the syntax string, we're done. */
1211 if (* syn == 0)
1212 {
1213 /* FIXME: For the moment we assume a valid `str' can only contain
1214 blanks now. IE: We needn't try again with a longer version of
1215 the insn and it is assumed that longer versions of insns appear
1216 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
1217 while (ISSPACE (* str))
1218 ++ str;
1219
1220 if (* str != '\0')
1221 return _("junk at end of line"); /* FIXME: would like to include `str' */
1222
1223 return NULL;
1224 }
1225
1226 /* We couldn't parse it. */
1227 return _("unrecognized instruction");
1228 }
1229
1230 /* Main entry point.
1231 This routine is called for each instruction to be assembled.
1232 STR points to the insn to be assembled.
1233 We assume all necessary tables have been initialized.
1234 The assembled instruction, less any fixups, is stored in BUF.
1235 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
1236 still needs to be converted to target byte order, otherwise BUF is an array
1237 of bytes in target byte order.
1238 The result is a pointer to the insn's entry in the opcode table,
1239 or NULL if an error occured (an error message will have already been
1240 printed).
1241
1242 Note that when processing (non-alias) macro-insns,
1243 this function recurses.
1244
1245 ??? It's possible to make this cpu-independent.
1246 One would have to deal with a few minor things.
1247 At this point in time doing so would be more of a curiosity than useful
1248 [for example this file isn't _that_ big], but keeping the possibility in
1249 mind helps keep the design clean. */
1250
1251 const CGEN_INSN *
frv_cgen_assemble_insn(CGEN_CPU_DESC cd,const char * str,CGEN_FIELDS * fields,CGEN_INSN_BYTES_PTR buf,char ** errmsg)1252 frv_cgen_assemble_insn (CGEN_CPU_DESC cd,
1253 const char *str,
1254 CGEN_FIELDS *fields,
1255 CGEN_INSN_BYTES_PTR buf,
1256 char **errmsg)
1257 {
1258 const char *start;
1259 CGEN_INSN_LIST *ilist;
1260 const char *parse_errmsg = NULL;
1261 const char *insert_errmsg = NULL;
1262 int recognized_mnemonic = 0;
1263
1264 /* Skip leading white space. */
1265 while (ISSPACE (* str))
1266 ++ str;
1267
1268 /* The instructions are stored in hashed lists.
1269 Get the first in the list. */
1270 ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
1271
1272 /* Keep looking until we find a match. */
1273 start = str;
1274 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
1275 {
1276 const CGEN_INSN *insn = ilist->insn;
1277 recognized_mnemonic = 1;
1278
1279 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
1280 /* Not usually needed as unsupported opcodes
1281 shouldn't be in the hash lists. */
1282 /* Is this insn supported by the selected cpu? */
1283 if (! frv_cgen_insn_supported (cd, insn))
1284 continue;
1285 #endif
1286 /* If the RELAXED attribute is set, this is an insn that shouldn't be
1287 chosen immediately. Instead, it is used during assembler/linker
1288 relaxation if possible. */
1289 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0)
1290 continue;
1291
1292 str = start;
1293
1294 /* Skip this insn if str doesn't look right lexically. */
1295 if (CGEN_INSN_RX (insn) != NULL &&
1296 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
1297 continue;
1298
1299 /* Allow parse/insert handlers to obtain length of insn. */
1300 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
1301
1302 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
1303 if (parse_errmsg != NULL)
1304 continue;
1305
1306 /* ??? 0 is passed for `pc'. */
1307 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
1308 (bfd_vma) 0);
1309 if (insert_errmsg != NULL)
1310 continue;
1311
1312 /* It is up to the caller to actually output the insn and any
1313 queued relocs. */
1314 return insn;
1315 }
1316
1317 {
1318 static char errbuf[150];
1319 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
1320 const char *tmp_errmsg;
1321
1322 /* If requesting verbose error messages, use insert_errmsg.
1323 Failing that, use parse_errmsg. */
1324 tmp_errmsg = (insert_errmsg ? insert_errmsg :
1325 parse_errmsg ? parse_errmsg :
1326 recognized_mnemonic ?
1327 _("unrecognized form of instruction") :
1328 _("unrecognized instruction"));
1329
1330 if (strlen (start) > 50)
1331 /* xgettext:c-format */
1332 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
1333 else
1334 /* xgettext:c-format */
1335 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
1336 #else
1337 if (strlen (start) > 50)
1338 /* xgettext:c-format */
1339 sprintf (errbuf, _("bad instruction `%.50s...'"), start);
1340 else
1341 /* xgettext:c-format */
1342 sprintf (errbuf, _("bad instruction `%.50s'"), start);
1343 #endif
1344
1345 *errmsg = errbuf;
1346 return NULL;
1347 }
1348 }
1349
1350 #if 0 /* This calls back to GAS which we can't do without care. */
1351
1352 /* Record each member of OPVALS in the assembler's symbol table.
1353 This lets GAS parse registers for us.
1354 ??? Interesting idea but not currently used. */
1355
1356 /* Record each member of OPVALS in the assembler's symbol table.
1357 FIXME: Not currently used. */
1358
1359 void
1360 frv_cgen_asm_hash_keywords (CGEN_CPU_DESC cd, CGEN_KEYWORD *opvals)
1361 {
1362 CGEN_KEYWORD_SEARCH search = cgen_keyword_search_init (opvals, NULL);
1363 const CGEN_KEYWORD_ENTRY * ke;
1364
1365 while ((ke = cgen_keyword_search_next (& search)) != NULL)
1366 {
1367 #if 0 /* Unnecessary, should be done in the search routine. */
1368 if (! frv_cgen_opval_supported (ke))
1369 continue;
1370 #endif
1371 cgen_asm_record_register (cd, ke->name, ke->value);
1372 }
1373 }
1374
1375 #endif /* 0 */
1376