source: trunk/binutils/opcodes/fr30-asm.c@ 2927

Last change on this file since 2927 was 610, checked in by bird, 22 years ago

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1/* Assembler interface for targets using CGEN. -*- C -*-
2 CGEN: Cpu tools GENerator
3
4THIS FILE IS MACHINE GENERATED WITH CGEN.
5- the resultant file is machine generated, cgen-asm.in isn't
6
7Copyright 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
8
9This file is part of the GNU Binutils and GDB, the GNU debugger.
10
11This program is free software; you can redistribute it and/or modify
12it under the terms of the GNU General Public License as published by
13the Free Software Foundation; either version 2, or (at your option)
14any later version.
15
16This program is distributed in the hope that it will be useful,
17but WITHOUT ANY WARRANTY; without even the implied warranty of
18MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19GNU General Public License for more details.
20
21You should have received a copy of the GNU General Public License
22along with this program; if not, write to the Free Software Foundation, Inc.,
2359 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 "fr30-desc.h"
34#include "fr30-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
45static const char * parse_insn_normal
46 PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *));
47
48
49/* -- assembler routines inserted here. */
50
51/* -- asm.c */
52/* Handle register lists for LDMx and STMx. */
53
54static int parse_register_number
55 PARAMS ((const char **));
56static const char * parse_register_list
57 PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *, int, int));
58static const char * parse_low_register_list_ld
59 PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));
60static const char * parse_hi_register_list_ld
61 PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));
62static const char * parse_low_register_list_st
63 PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));
64static const char * parse_hi_register_list_st
65 PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *));
66
67static int
68parse_register_number (strp)
69 const char **strp;
70{
71 int regno;
72 if (**strp < '0' || **strp > '9')
73 return -1; /* error. */
74 regno = **strp - '0';
75 ++*strp;
76
77 if (**strp >= '0' && **strp <= '9')
78 {
79 regno = regno * 10 + (**strp - '0');
80 ++*strp;
81 }
82
83 return regno;
84}
85
86static const char *
87parse_register_list (cd, strp, opindex, valuep, high_low, load_store)
88 CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
89 const char **strp;
90 int opindex ATTRIBUTE_UNUSED;
91 unsigned long *valuep;
92 int high_low; /* 0 == high, 1 == low */
93 int load_store; /* 0 == load, 1 == store */
94{
95 int regno;
96
97 *valuep = 0;
98 while (**strp && **strp != ')')
99 {
100 if (**strp != 'R' && **strp != 'r')
101 break;
102 ++*strp;
103
104 regno = parse_register_number (strp);
105 if (regno == -1)
106 return "Register number is not valid";
107 if (regno > 7 && !high_low)
108 return "Register must be between r0 and r7";
109 if (regno < 8 && high_low)
110 return "Register must be between r8 and r15";
111
112 if (high_low)
113 regno -= 8;
114
115 if (load_store) /* Mask is reversed for store. */
116 *valuep |= 0x80 >> regno;
117 else
118 *valuep |= 1 << regno;
119
120 if (**strp == ',')
121 {
122 if (*(*strp + 1) == ')')
123 break;
124 ++*strp;
125 }
126 }
127
128 if (!*strp || **strp != ')')
129 return "Register list is not valid";
130
131 return NULL;
132}
133
134static const char *
135parse_low_register_list_ld (cd, strp, opindex, valuep)
136 CGEN_CPU_DESC cd;
137 const char **strp;
138 int opindex;
139 unsigned long *valuep;
140{
141 return parse_register_list (cd, strp, opindex, valuep, 0/*low*/, 0/*load*/);
142}
143
144static const char *
145parse_hi_register_list_ld (cd, strp, opindex, valuep)
146 CGEN_CPU_DESC cd;
147 const char **strp;
148 int opindex;
149 unsigned long *valuep;
150{
151 return parse_register_list (cd, strp, opindex, valuep, 1/*high*/, 0/*load*/);
152}
153
154static const char *
155parse_low_register_list_st (cd, strp, opindex, valuep)
156 CGEN_CPU_DESC cd;
157 const char **strp;
158 int opindex;
159 unsigned long *valuep;
160{
161 return parse_register_list (cd, strp, opindex, valuep, 0/*low*/, 1/*store*/);
162}
163
164static const char *
165parse_hi_register_list_st (cd, strp, opindex, valuep)
166 CGEN_CPU_DESC cd;
167 const char **strp;
168 int opindex;
169 unsigned long *valuep;
170{
171 return parse_register_list (cd, strp, opindex, valuep, 1/*high*/, 1/*store*/);
172}
173
174/* -- */
175
176const char * fr30_cgen_parse_operand
177 PARAMS ((CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *));
178
179/* Main entry point for operand parsing.
180
181 This function is basically just a big switch statement. Earlier versions
182 used tables to look up the function to use, but
183 - if the table contains both assembler and disassembler functions then
184 the disassembler contains much of the assembler and vice-versa,
185 - there's a lot of inlining possibilities as things grow,
186 - using a switch statement avoids the function call overhead.
187
188 This function could be moved into `parse_insn_normal', but keeping it
189 separate makes clear the interface between `parse_insn_normal' and each of
190 the handlers. */
191
192const char *
193fr30_cgen_parse_operand (cd, opindex, strp, fields)
194 CGEN_CPU_DESC cd;
195 int opindex;
196 const char ** strp;
197 CGEN_FIELDS * fields;
198{
199 const char * errmsg = NULL;
200 /* Used by scalar operands that still need to be parsed. */
201 long junk ATTRIBUTE_UNUSED;
202
203 switch (opindex)
204 {
205 case FR30_OPERAND_CRI :
206 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_cr_names, & fields->f_CRi);
207 break;
208 case FR30_OPERAND_CRJ :
209 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_cr_names, & fields->f_CRj);
210 break;
211 case FR30_OPERAND_R13 :
212 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_h_r13, & junk);
213 break;
214 case FR30_OPERAND_R14 :
215 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_h_r14, & junk);
216 break;
217 case FR30_OPERAND_R15 :
218 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_h_r15, & junk);
219 break;
220 case FR30_OPERAND_RI :
221 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_gr_names, & fields->f_Ri);
222 break;
223 case FR30_OPERAND_RIC :
224 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_gr_names, & fields->f_Ric);
225 break;
226 case FR30_OPERAND_RJ :
227 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_gr_names, & fields->f_Rj);
228 break;
229 case FR30_OPERAND_RJC :
230 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_gr_names, & fields->f_Rjc);
231 break;
232 case FR30_OPERAND_RS1 :
233 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_dr_names, & fields->f_Rs1);
234 break;
235 case FR30_OPERAND_RS2 :
236 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_dr_names, & fields->f_Rs2);
237 break;
238 case FR30_OPERAND_CC :
239 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_CC, &fields->f_cc);
240 break;
241 case FR30_OPERAND_CCC :
242 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_CCC, &fields->f_ccc);
243 break;
244 case FR30_OPERAND_DIR10 :
245 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_DIR10, &fields->f_dir10);
246 break;
247 case FR30_OPERAND_DIR8 :
248 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_DIR8, &fields->f_dir8);
249 break;
250 case FR30_OPERAND_DIR9 :
251 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_DIR9, &fields->f_dir9);
252 break;
253 case FR30_OPERAND_DISP10 :
254 errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_DISP10, &fields->f_disp10);
255 break;
256 case FR30_OPERAND_DISP8 :
257 errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_DISP8, &fields->f_disp8);
258 break;
259 case FR30_OPERAND_DISP9 :
260 errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_DISP9, &fields->f_disp9);
261 break;
262 case FR30_OPERAND_I20 :
263 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_I20, &fields->f_i20);
264 break;
265 case FR30_OPERAND_I32 :
266 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_I32, &fields->f_i32);
267 break;
268 case FR30_OPERAND_I8 :
269 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_I8, &fields->f_i8);
270 break;
271 case FR30_OPERAND_LABEL12 :
272 {
273 bfd_vma value;
274 errmsg = cgen_parse_address (cd, strp, FR30_OPERAND_LABEL12, 0, NULL, & value);
275 fields->f_rel12 = value;
276 }
277 break;
278 case FR30_OPERAND_LABEL9 :
279 {
280 bfd_vma value;
281 errmsg = cgen_parse_address (cd, strp, FR30_OPERAND_LABEL9, 0, NULL, & value);
282 fields->f_rel9 = value;
283 }
284 break;
285 case FR30_OPERAND_M4 :
286 errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_M4, &fields->f_m4);
287 break;
288 case FR30_OPERAND_PS :
289 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_h_ps, & junk);
290 break;
291 case FR30_OPERAND_REGLIST_HI_LD :
292 errmsg = parse_hi_register_list_ld (cd, strp, FR30_OPERAND_REGLIST_HI_LD, &fields->f_reglist_hi_ld);
293 break;
294 case FR30_OPERAND_REGLIST_HI_ST :
295 errmsg = parse_hi_register_list_st (cd, strp, FR30_OPERAND_REGLIST_HI_ST, &fields->f_reglist_hi_st);
296 break;
297 case FR30_OPERAND_REGLIST_LOW_LD :
298 errmsg = parse_low_register_list_ld (cd, strp, FR30_OPERAND_REGLIST_LOW_LD, &fields->f_reglist_low_ld);
299 break;
300 case FR30_OPERAND_REGLIST_LOW_ST :
301 errmsg = parse_low_register_list_st (cd, strp, FR30_OPERAND_REGLIST_LOW_ST, &fields->f_reglist_low_st);
302 break;
303 case FR30_OPERAND_S10 :
304 errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_S10, &fields->f_s10);
305 break;
306 case FR30_OPERAND_U10 :
307 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_U10, &fields->f_u10);
308 break;
309 case FR30_OPERAND_U4 :
310 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_U4, &fields->f_u4);
311 break;
312 case FR30_OPERAND_U4C :
313 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_U4C, &fields->f_u4c);
314 break;
315 case FR30_OPERAND_U8 :
316 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_U8, &fields->f_u8);
317 break;
318 case FR30_OPERAND_UDISP6 :
319 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_UDISP6, &fields->f_udisp6);
320 break;
321
322 default :
323 /* xgettext:c-format */
324 fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex);
325 abort ();
326 }
327
328 return errmsg;
329}
330
331cgen_parse_fn * const fr30_cgen_parse_handlers[] =
332{
333 parse_insn_normal,
334};
335
336void
337fr30_cgen_init_asm (cd)
338 CGEN_CPU_DESC cd;
339{
340 fr30_cgen_init_opcode_table (cd);
341 fr30_cgen_init_ibld_table (cd);
342 cd->parse_handlers = & fr30_cgen_parse_handlers[0];
343 cd->parse_operand = fr30_cgen_parse_operand;
344}
345
346
347
348
349/* Regex construction routine.
350
351 This translates an opcode syntax string into a regex string,
352 by replacing any non-character syntax element (such as an
353 opcode) with the pattern '.*'
354
355 It then compiles the regex and stores it in the opcode, for
356 later use by fr30_cgen_assemble_insn
357
358 Returns NULL for success, an error message for failure. */
359
360char *
361fr30_cgen_build_insn_regex (insn)
362 CGEN_INSN *insn;
363{
364 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
365 const char *mnem = CGEN_INSN_MNEMONIC (insn);
366 char rxbuf[CGEN_MAX_RX_ELEMENTS];
367 char *rx = rxbuf;
368 const CGEN_SYNTAX_CHAR_TYPE *syn;
369 int reg_err;
370
371 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
372
373 /* Mnemonics come first in the syntax string. */
374 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
375 return _("missing mnemonic in syntax string");
376 ++syn;
377
378 /* Generate a case sensitive regular expression that emulates case
379 insensitive matching in the "C" locale. We cannot generate a case
380 insensitive regular expression because in Turkish locales, 'i' and 'I'
381 are not equal modulo case conversion. */
382
383 /* Copy the literal mnemonic out of the insn. */
384 for (; *mnem; mnem++)
385 {
386 char c = *mnem;
387
388 if (ISALPHA (c))
389 {
390 *rx++ = '[';
391 *rx++ = TOLOWER (c);
392 *rx++ = TOUPPER (c);
393 *rx++ = ']';
394 }
395 else
396 *rx++ = c;
397 }
398
399 /* Copy any remaining literals from the syntax string into the rx. */
400 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
401 {
402 if (CGEN_SYNTAX_CHAR_P (* syn))
403 {
404 char c = CGEN_SYNTAX_CHAR (* syn);
405
406 switch (c)
407 {
408 /* Escape any regex metacharacters in the syntax. */
409 case '.': case '[': case '\\':
410 case '*': case '^': case '$':
411
412#ifdef CGEN_ESCAPE_EXTENDED_REGEX
413 case '?': case '{': case '}':
414 case '(': case ')': case '*':
415 case '|': case '+': case ']':
416#endif
417 *rx++ = '\\';
418 *rx++ = c;
419 break;
420
421 default:
422 if (ISALPHA (c))
423 {
424 *rx++ = '[';
425 *rx++ = TOLOWER (c);
426 *rx++ = TOUPPER (c);
427 *rx++ = ']';
428 }
429 else
430 *rx++ = c;
431 break;
432 }
433 }
434 else
435 {
436 /* Replace non-syntax fields with globs. */
437 *rx++ = '.';
438 *rx++ = '*';
439 }
440 }
441
442 /* Trailing whitespace ok. */
443 * rx++ = '[';
444 * rx++ = ' ';
445 * rx++ = '\t';
446 * rx++ = ']';
447 * rx++ = '*';
448
449 /* But anchor it after that. */
450 * rx++ = '$';
451 * rx = '\0';
452
453 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
454 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
455
456 if (reg_err == 0)
457 return NULL;
458 else
459 {
460 static char msg[80];
461
462 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
463 regfree ((regex_t *) CGEN_INSN_RX (insn));
464 free (CGEN_INSN_RX (insn));
465 (CGEN_INSN_RX (insn)) = NULL;
466 return msg;
467 }
468}
469
470
471
472/* Default insn parser.
473
474 The syntax string is scanned and operands are parsed and stored in FIELDS.
475 Relocs are queued as we go via other callbacks.
476
477 ??? Note that this is currently an all-or-nothing parser. If we fail to
478 parse the instruction, we return 0 and the caller will start over from
479 the beginning. Backtracking will be necessary in parsing subexpressions,
480 but that can be handled there. Not handling backtracking here may get
481 expensive in the case of the m68k. Deal with later.
482
483 Returns NULL for success, an error message for failure. */
484
485static const char *
486parse_insn_normal (cd, insn, strp, fields)
487 CGEN_CPU_DESC cd;
488 const CGEN_INSN *insn;
489 const char **strp;
490 CGEN_FIELDS *fields;
491{
492 /* ??? Runtime added insns not handled yet. */
493 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
494 const char *str = *strp;
495 const char *errmsg;
496 const char *p;
497 const CGEN_SYNTAX_CHAR_TYPE * syn;
498#ifdef CGEN_MNEMONIC_OPERANDS
499 /* FIXME: wip */
500 int past_opcode_p;
501#endif
502
503 /* For now we assume the mnemonic is first (there are no leading operands).
504 We can parse it without needing to set up operand parsing.
505 GAS's input scrubber will ensure mnemonics are lowercase, but we may
506 not be called from GAS. */
507 p = CGEN_INSN_MNEMONIC (insn);
508 while (*p && TOLOWER (*p) == TOLOWER (*str))
509 ++p, ++str;
510
511 if (* p)
512 return _("unrecognized instruction");
513
514#ifndef CGEN_MNEMONIC_OPERANDS
515 if (* str && ! ISSPACE (* str))
516 return _("unrecognized instruction");
517#endif
518
519 CGEN_INIT_PARSE (cd);
520 cgen_init_parse_operand (cd);
521#ifdef CGEN_MNEMONIC_OPERANDS
522 past_opcode_p = 0;
523#endif
524
525 /* We don't check for (*str != '\0') here because we want to parse
526 any trailing fake arguments in the syntax string. */
527 syn = CGEN_SYNTAX_STRING (syntax);
528
529 /* Mnemonics come first for now, ensure valid string. */
530 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
531 abort ();
532
533 ++syn;
534
535 while (* syn != 0)
536 {
537 /* Non operand chars must match exactly. */
538 if (CGEN_SYNTAX_CHAR_P (* syn))
539 {
540 /* FIXME: While we allow for non-GAS callers above, we assume the
541 first char after the mnemonic part is a space. */
542 /* FIXME: We also take inappropriate advantage of the fact that
543 GAS's input scrubber will remove extraneous blanks. */
544 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn)))
545 {
546#ifdef CGEN_MNEMONIC_OPERANDS
547 if (CGEN_SYNTAX_CHAR(* syn) == ' ')
548 past_opcode_p = 1;
549#endif
550 ++ syn;
551 ++ str;
552 }
553 else if (*str)
554 {
555 /* Syntax char didn't match. Can't be this insn. */
556 static char msg [80];
557
558 /* xgettext:c-format */
559 sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
560 CGEN_SYNTAX_CHAR(*syn), *str);
561 return msg;
562 }
563 else
564 {
565 /* Ran out of input. */
566 static char msg [80];
567
568 /* xgettext:c-format */
569 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
570 CGEN_SYNTAX_CHAR(*syn));
571 return msg;
572 }
573 continue;
574 }
575
576 /* We have an operand of some sort. */
577 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn),
578 &str, fields);
579 if (errmsg)
580 return errmsg;
581
582 /* Done with this operand, continue with next one. */
583 ++ syn;
584 }
585
586 /* If we're at the end of the syntax string, we're done. */
587 if (* syn == 0)
588 {
589 /* FIXME: For the moment we assume a valid `str' can only contain
590 blanks now. IE: We needn't try again with a longer version of
591 the insn and it is assumed that longer versions of insns appear
592 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
593 while (ISSPACE (* str))
594 ++ str;
595
596 if (* str != '\0')
597 return _("junk at end of line"); /* FIXME: would like to include `str' */
598
599 return NULL;
600 }
601
602 /* We couldn't parse it. */
603 return _("unrecognized instruction");
604}
605
606
607/* Main entry point.
608 This routine is called for each instruction to be assembled.
609 STR points to the insn to be assembled.
610 We assume all necessary tables have been initialized.
611 The assembled instruction, less any fixups, is stored in BUF.
612 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
613 still needs to be converted to target byte order, otherwise BUF is an array
614 of bytes in target byte order.
615 The result is a pointer to the insn's entry in the opcode table,
616 or NULL if an error occured (an error message will have already been
617 printed).
618
619 Note that when processing (non-alias) macro-insns,
620 this function recurses.
621
622 ??? It's possible to make this cpu-independent.
623 One would have to deal with a few minor things.
624 At this point in time doing so would be more of a curiosity than useful
625 [for example this file isn't _that_ big], but keeping the possibility in
626 mind helps keep the design clean. */
627
628const CGEN_INSN *
629fr30_cgen_assemble_insn (cd, str, fields, buf, errmsg)
630 CGEN_CPU_DESC cd;
631 const char *str;
632 CGEN_FIELDS *fields;
633 CGEN_INSN_BYTES_PTR buf;
634 char **errmsg;
635{
636 const char *start;
637 CGEN_INSN_LIST *ilist;
638 const char *parse_errmsg = NULL;
639 const char *insert_errmsg = NULL;
640 int recognized_mnemonic = 0;
641
642 /* Skip leading white space. */
643 while (ISSPACE (* str))
644 ++ str;
645
646 /* The instructions are stored in hashed lists.
647 Get the first in the list. */
648 ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
649
650 /* Keep looking until we find a match. */
651 start = str;
652 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
653 {
654 const CGEN_INSN *insn = ilist->insn;
655 recognized_mnemonic = 1;
656
657#ifdef CGEN_VALIDATE_INSN_SUPPORTED
658 /* Not usually needed as unsupported opcodes
659 shouldn't be in the hash lists. */
660 /* Is this insn supported by the selected cpu? */
661 if (! fr30_cgen_insn_supported (cd, insn))
662 continue;
663#endif
664 /* If the RELAX attribute is set, this is an insn that shouldn't be
665 chosen immediately. Instead, it is used during assembler/linker
666 relaxation if possible. */
667 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAX) != 0)
668 continue;
669
670 str = start;
671
672 /* Skip this insn if str doesn't look right lexically. */
673 if (CGEN_INSN_RX (insn) != NULL &&
674 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
675 continue;
676
677 /* Allow parse/insert handlers to obtain length of insn. */
678 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
679
680 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
681 if (parse_errmsg != NULL)
682 continue;
683
684 /* ??? 0 is passed for `pc'. */
685 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
686 (bfd_vma) 0);
687 if (insert_errmsg != NULL)
688 continue;
689
690 /* It is up to the caller to actually output the insn and any
691 queued relocs. */
692 return insn;
693 }
694
695 {
696 static char errbuf[150];
697#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
698 const char *tmp_errmsg;
699
700 /* If requesting verbose error messages, use insert_errmsg.
701 Failing that, use parse_errmsg. */
702 tmp_errmsg = (insert_errmsg ? insert_errmsg :
703 parse_errmsg ? parse_errmsg :
704 recognized_mnemonic ?
705 _("unrecognized form of instruction") :
706 _("unrecognized instruction"));
707
708 if (strlen (start) > 50)
709 /* xgettext:c-format */
710 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
711 else
712 /* xgettext:c-format */
713 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
714#else
715 if (strlen (start) > 50)
716 /* xgettext:c-format */
717 sprintf (errbuf, _("bad instruction `%.50s...'"), start);
718 else
719 /* xgettext:c-format */
720 sprintf (errbuf, _("bad instruction `%.50s'"), start);
721#endif
722
723 *errmsg = errbuf;
724 return NULL;
725 }
726}
727
728
729#if 0 /* This calls back to GAS which we can't do without care. */
730
731/* Record each member of OPVALS in the assembler's symbol table.
732 This lets GAS parse registers for us.
733 ??? Interesting idea but not currently used. */
734
735/* Record each member of OPVALS in the assembler's symbol table.
736 FIXME: Not currently used. */
737
738void
739fr30_cgen_asm_hash_keywords (cd, opvals)
740 CGEN_CPU_DESC cd;
741 CGEN_KEYWORD *opvals;
742{
743 CGEN_KEYWORD_SEARCH search = cgen_keyword_search_init (opvals, NULL);
744 const CGEN_KEYWORD_ENTRY * ke;
745
746 while ((ke = cgen_keyword_search_next (& search)) != NULL)
747 {
748#if 0 /* Unnecessary, should be done in the search routine. */
749 if (! fr30_cgen_opval_supported (ke))
750 continue;
751#endif
752 cgen_asm_record_register (cd, ke->name, ke->value);
753 }
754}
755
756#endif /* 0 */
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