1 /* DO NOT EDIT! -*- buffer-read-only: t -*- vi:set ro: */
2 /* Assembler interface for targets using CGEN. -*- C -*-
3 CGEN: Cpu tools GENerator
4
5 THIS FILE IS MACHINE GENERATED WITH CGEN.
6 - the resultant file is machine generated, cgen-asm.in isn't
7
8 Copyright (C) 1996-2021 Free Software Foundation, Inc.
9
10 This file is part of libopcodes.
11
12 This library is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 3, or (at your option)
15 any later version.
16
17 It is distributed in the hope that it will be useful, but WITHOUT
18 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
19 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
20 License for more details.
21
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software Foundation, Inc.,
24 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
25
26
27 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
28 Keep that in mind. */
29
30 #include "sysdep.h"
31 #include <stdio.h>
32 #include "ansidecl.h"
33 #include "bfd.h"
34 #include "symcat.h"
35 #include "fr30-desc.h"
36 #include "fr30-opc.h"
37 #include "opintl.h"
38 #include "xregex.h"
39 #include "libiberty.h"
40 #include "safe-ctype.h"
41
42 #undef min
43 #define min(a,b) ((a) < (b) ? (a) : (b))
44 #undef max
45 #define max(a,b) ((a) > (b) ? (a) : (b))
46
47 static const char * parse_insn_normal
48 (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *);
49
50 /* -- assembler routines inserted here. */
51
52 /* -- asm.c */
53 /* Handle register lists for LDMx and STMx. */
54
55 static int
parse_register_number(const char ** strp)56 parse_register_number (const char **strp)
57 {
58 int regno;
59
60 if (**strp < '0' || **strp > '9')
61 return -1; /* Error. */
62 regno = **strp - '0';
63 ++*strp;
64
65 if (**strp >= '0' && **strp <= '9')
66 {
67 regno = regno * 10 + (**strp - '0');
68 ++*strp;
69 }
70
71 return regno;
72 }
73
74 static const char *
parse_register_list(CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,const char ** strp,int opindex ATTRIBUTE_UNUSED,unsigned long * valuep,int high_low,int load_store)75 parse_register_list (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
76 const char **strp,
77 int opindex ATTRIBUTE_UNUSED,
78 unsigned long *valuep,
79 int high_low, /* 0 == high, 1 == low. */
80 int load_store) /* 0 == load, 1 == store. */
81 {
82 *valuep = 0;
83 while (**strp && **strp != ')')
84 {
85 int regno;
86
87 if (**strp != 'R' && **strp != 'r')
88 break;
89 ++*strp;
90
91 regno = parse_register_number (strp);
92 if (regno == -1)
93 return _("Register number is not valid");
94 if (regno > 7 && !high_low)
95 return _("Register must be between r0 and r7");
96 if (regno < 8 && high_low)
97 return _("Register must be between r8 and r15");
98
99 if (high_low)
100 regno -= 8;
101
102 if (load_store) /* Mask is reversed for store. */
103 *valuep |= 0x80 >> regno;
104 else
105 *valuep |= 1 << regno;
106
107 if (**strp == ',')
108 {
109 if (*(*strp + 1) == ')')
110 break;
111 ++*strp;
112 }
113 }
114
115 if (!*strp || **strp != ')')
116 return _("Register list is not valid");
117
118 return NULL;
119 }
120
121 static const char *
parse_low_register_list_ld(CGEN_CPU_DESC cd,const char ** strp,int opindex,unsigned long * valuep)122 parse_low_register_list_ld (CGEN_CPU_DESC cd,
123 const char **strp,
124 int opindex,
125 unsigned long *valuep)
126 {
127 return parse_register_list (cd, strp, opindex, valuep,
128 0 /* Low. */, 0 /* Load. */);
129 }
130
131 static const char *
parse_hi_register_list_ld(CGEN_CPU_DESC cd,const char ** strp,int opindex,unsigned long * valuep)132 parse_hi_register_list_ld (CGEN_CPU_DESC cd,
133 const char **strp,
134 int opindex,
135 unsigned long *valuep)
136 {
137 return parse_register_list (cd, strp, opindex, valuep,
138 1 /* High. */, 0 /* Load. */);
139 }
140
141 static const char *
parse_low_register_list_st(CGEN_CPU_DESC cd,const char ** strp,int opindex,unsigned long * valuep)142 parse_low_register_list_st (CGEN_CPU_DESC cd,
143 const char **strp,
144 int opindex,
145 unsigned long *valuep)
146 {
147 return parse_register_list (cd, strp, opindex, valuep,
148 0 /* Low. */, 1 /* Store. */);
149 }
150
151 static const char *
parse_hi_register_list_st(CGEN_CPU_DESC cd,const char ** strp,int opindex,unsigned long * valuep)152 parse_hi_register_list_st (CGEN_CPU_DESC cd,
153 const char **strp,
154 int opindex,
155 unsigned long *valuep)
156 {
157 return parse_register_list (cd, strp, opindex, valuep,
158 1 /* High. */, 1 /* Store. */);
159 }
160
161 /* -- */
162
163 const char * fr30_cgen_parse_operand
164 (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *);
165
166 /* Main entry point for operand parsing.
167
168 This function is basically just a big switch statement. Earlier versions
169 used tables to look up the function to use, but
170 - if the table contains both assembler and disassembler functions then
171 the disassembler contains much of the assembler and vice-versa,
172 - there's a lot of inlining possibilities as things grow,
173 - using a switch statement avoids the function call overhead.
174
175 This function could be moved into `parse_insn_normal', but keeping it
176 separate makes clear the interface between `parse_insn_normal' and each of
177 the handlers. */
178
179 const char *
fr30_cgen_parse_operand(CGEN_CPU_DESC cd,int opindex,const char ** strp,CGEN_FIELDS * fields)180 fr30_cgen_parse_operand (CGEN_CPU_DESC cd,
181 int opindex,
182 const char ** strp,
183 CGEN_FIELDS * fields)
184 {
185 const char * errmsg = NULL;
186 /* Used by scalar operands that still need to be parsed. */
187 long junk ATTRIBUTE_UNUSED;
188
189 switch (opindex)
190 {
191 case FR30_OPERAND_CRI :
192 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_cr_names, & fields->f_CRi);
193 break;
194 case FR30_OPERAND_CRJ :
195 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_cr_names, & fields->f_CRj);
196 break;
197 case FR30_OPERAND_R13 :
198 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_h_r13, & junk);
199 break;
200 case FR30_OPERAND_R14 :
201 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_h_r14, & junk);
202 break;
203 case FR30_OPERAND_R15 :
204 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_h_r15, & junk);
205 break;
206 case FR30_OPERAND_RI :
207 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_gr_names, & fields->f_Ri);
208 break;
209 case FR30_OPERAND_RIC :
210 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_gr_names, & fields->f_Ric);
211 break;
212 case FR30_OPERAND_RJ :
213 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_gr_names, & fields->f_Rj);
214 break;
215 case FR30_OPERAND_RJC :
216 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_gr_names, & fields->f_Rjc);
217 break;
218 case FR30_OPERAND_RS1 :
219 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_dr_names, & fields->f_Rs1);
220 break;
221 case FR30_OPERAND_RS2 :
222 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_dr_names, & fields->f_Rs2);
223 break;
224 case FR30_OPERAND_CC :
225 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_CC, (unsigned long *) (& fields->f_cc));
226 break;
227 case FR30_OPERAND_CCC :
228 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_CCC, (unsigned long *) (& fields->f_ccc));
229 break;
230 case FR30_OPERAND_DIR10 :
231 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_DIR10, (unsigned long *) (& fields->f_dir10));
232 break;
233 case FR30_OPERAND_DIR8 :
234 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_DIR8, (unsigned long *) (& fields->f_dir8));
235 break;
236 case FR30_OPERAND_DIR9 :
237 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_DIR9, (unsigned long *) (& fields->f_dir9));
238 break;
239 case FR30_OPERAND_DISP10 :
240 errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_DISP10, (long *) (& fields->f_disp10));
241 break;
242 case FR30_OPERAND_DISP8 :
243 errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_DISP8, (long *) (& fields->f_disp8));
244 break;
245 case FR30_OPERAND_DISP9 :
246 errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_DISP9, (long *) (& fields->f_disp9));
247 break;
248 case FR30_OPERAND_I20 :
249 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_I20, (unsigned long *) (& fields->f_i20));
250 break;
251 case FR30_OPERAND_I32 :
252 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_I32, (unsigned long *) (& fields->f_i32));
253 break;
254 case FR30_OPERAND_I8 :
255 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_I8, (unsigned long *) (& fields->f_i8));
256 break;
257 case FR30_OPERAND_LABEL12 :
258 {
259 bfd_vma value = 0;
260 errmsg = cgen_parse_address (cd, strp, FR30_OPERAND_LABEL12, 0, NULL, & value);
261 fields->f_rel12 = value;
262 }
263 break;
264 case FR30_OPERAND_LABEL9 :
265 {
266 bfd_vma value = 0;
267 errmsg = cgen_parse_address (cd, strp, FR30_OPERAND_LABEL9, 0, NULL, & value);
268 fields->f_rel9 = value;
269 }
270 break;
271 case FR30_OPERAND_M4 :
272 errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_M4, (long *) (& fields->f_m4));
273 break;
274 case FR30_OPERAND_PS :
275 errmsg = cgen_parse_keyword (cd, strp, & fr30_cgen_opval_h_ps, & junk);
276 break;
277 case FR30_OPERAND_REGLIST_HI_LD :
278 errmsg = parse_hi_register_list_ld (cd, strp, FR30_OPERAND_REGLIST_HI_LD, (unsigned long *) (& fields->f_reglist_hi_ld));
279 break;
280 case FR30_OPERAND_REGLIST_HI_ST :
281 errmsg = parse_hi_register_list_st (cd, strp, FR30_OPERAND_REGLIST_HI_ST, (unsigned long *) (& fields->f_reglist_hi_st));
282 break;
283 case FR30_OPERAND_REGLIST_LOW_LD :
284 errmsg = parse_low_register_list_ld (cd, strp, FR30_OPERAND_REGLIST_LOW_LD, (unsigned long *) (& fields->f_reglist_low_ld));
285 break;
286 case FR30_OPERAND_REGLIST_LOW_ST :
287 errmsg = parse_low_register_list_st (cd, strp, FR30_OPERAND_REGLIST_LOW_ST, (unsigned long *) (& fields->f_reglist_low_st));
288 break;
289 case FR30_OPERAND_S10 :
290 errmsg = cgen_parse_signed_integer (cd, strp, FR30_OPERAND_S10, (long *) (& fields->f_s10));
291 break;
292 case FR30_OPERAND_U10 :
293 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_U10, (unsigned long *) (& fields->f_u10));
294 break;
295 case FR30_OPERAND_U4 :
296 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_U4, (unsigned long *) (& fields->f_u4));
297 break;
298 case FR30_OPERAND_U4C :
299 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_U4C, (unsigned long *) (& fields->f_u4c));
300 break;
301 case FR30_OPERAND_U8 :
302 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_U8, (unsigned long *) (& fields->f_u8));
303 break;
304 case FR30_OPERAND_UDISP6 :
305 errmsg = cgen_parse_unsigned_integer (cd, strp, FR30_OPERAND_UDISP6, (unsigned long *) (& fields->f_udisp6));
306 break;
307
308 default :
309 /* xgettext:c-format */
310 opcodes_error_handler
311 (_("internal error: unrecognized field %d while parsing"),
312 opindex);
313 abort ();
314 }
315
316 return errmsg;
317 }
318
319 cgen_parse_fn * const fr30_cgen_parse_handlers[] =
320 {
321 parse_insn_normal,
322 };
323
324 void
fr30_cgen_init_asm(CGEN_CPU_DESC cd)325 fr30_cgen_init_asm (CGEN_CPU_DESC cd)
326 {
327 fr30_cgen_init_opcode_table (cd);
328 fr30_cgen_init_ibld_table (cd);
329 cd->parse_handlers = & fr30_cgen_parse_handlers[0];
330 cd->parse_operand = fr30_cgen_parse_operand;
331 #ifdef CGEN_ASM_INIT_HOOK
332 CGEN_ASM_INIT_HOOK
333 #endif
334 }
335
336
337
338 /* Regex construction routine.
339
340 This translates an opcode syntax string into a regex string,
341 by replacing any non-character syntax element (such as an
342 opcode) with the pattern '.*'
343
344 It then compiles the regex and stores it in the opcode, for
345 later use by fr30_cgen_assemble_insn
346
347 Returns NULL for success, an error message for failure. */
348
349 char *
fr30_cgen_build_insn_regex(CGEN_INSN * insn)350 fr30_cgen_build_insn_regex (CGEN_INSN *insn)
351 {
352 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn);
353 const char *mnem = CGEN_INSN_MNEMONIC (insn);
354 char rxbuf[CGEN_MAX_RX_ELEMENTS];
355 char *rx = rxbuf;
356 const CGEN_SYNTAX_CHAR_TYPE *syn;
357 int reg_err;
358
359 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc));
360
361 /* Mnemonics come first in the syntax string. */
362 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
363 return _("missing mnemonic in syntax string");
364 ++syn;
365
366 /* Generate a case sensitive regular expression that emulates case
367 insensitive matching in the "C" locale. We cannot generate a case
368 insensitive regular expression because in Turkish locales, 'i' and 'I'
369 are not equal modulo case conversion. */
370
371 /* Copy the literal mnemonic out of the insn. */
372 for (; *mnem; mnem++)
373 {
374 char c = *mnem;
375
376 if (ISALPHA (c))
377 {
378 *rx++ = '[';
379 *rx++ = TOLOWER (c);
380 *rx++ = TOUPPER (c);
381 *rx++ = ']';
382 }
383 else
384 *rx++ = c;
385 }
386
387 /* Copy any remaining literals from the syntax string into the rx. */
388 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn)
389 {
390 if (CGEN_SYNTAX_CHAR_P (* syn))
391 {
392 char c = CGEN_SYNTAX_CHAR (* syn);
393
394 switch (c)
395 {
396 /* Escape any regex metacharacters in the syntax. */
397 case '.': case '[': case '\\':
398 case '*': case '^': case '$':
399
400 #ifdef CGEN_ESCAPE_EXTENDED_REGEX
401 case '?': case '{': case '}':
402 case '(': case ')': case '*':
403 case '|': case '+': case ']':
404 #endif
405 *rx++ = '\\';
406 *rx++ = c;
407 break;
408
409 default:
410 if (ISALPHA (c))
411 {
412 *rx++ = '[';
413 *rx++ = TOLOWER (c);
414 *rx++ = TOUPPER (c);
415 *rx++ = ']';
416 }
417 else
418 *rx++ = c;
419 break;
420 }
421 }
422 else
423 {
424 /* Replace non-syntax fields with globs. */
425 *rx++ = '.';
426 *rx++ = '*';
427 }
428 }
429
430 /* Trailing whitespace ok. */
431 * rx++ = '[';
432 * rx++ = ' ';
433 * rx++ = '\t';
434 * rx++ = ']';
435 * rx++ = '*';
436
437 /* But anchor it after that. */
438 * rx++ = '$';
439 * rx = '\0';
440
441 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t));
442 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB);
443
444 if (reg_err == 0)
445 return NULL;
446 else
447 {
448 static char msg[80];
449
450 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80);
451 regfree ((regex_t *) CGEN_INSN_RX (insn));
452 free (CGEN_INSN_RX (insn));
453 (CGEN_INSN_RX (insn)) = NULL;
454 return msg;
455 }
456 }
457
458
459 /* Default insn parser.
460
461 The syntax string is scanned and operands are parsed and stored in FIELDS.
462 Relocs are queued as we go via other callbacks.
463
464 ??? Note that this is currently an all-or-nothing parser. If we fail to
465 parse the instruction, we return 0 and the caller will start over from
466 the beginning. Backtracking will be necessary in parsing subexpressions,
467 but that can be handled there. Not handling backtracking here may get
468 expensive in the case of the m68k. Deal with later.
469
470 Returns NULL for success, an error message for failure. */
471
472 static const char *
parse_insn_normal(CGEN_CPU_DESC cd,const CGEN_INSN * insn,const char ** strp,CGEN_FIELDS * fields)473 parse_insn_normal (CGEN_CPU_DESC cd,
474 const CGEN_INSN *insn,
475 const char **strp,
476 CGEN_FIELDS *fields)
477 {
478 /* ??? Runtime added insns not handled yet. */
479 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
480 const char *str = *strp;
481 const char *errmsg;
482 const char *p;
483 const CGEN_SYNTAX_CHAR_TYPE * syn;
484 #ifdef CGEN_MNEMONIC_OPERANDS
485 /* FIXME: wip */
486 int past_opcode_p;
487 #endif
488
489 /* For now we assume the mnemonic is first (there are no leading operands).
490 We can parse it without needing to set up operand parsing.
491 GAS's input scrubber will ensure mnemonics are lowercase, but we may
492 not be called from GAS. */
493 p = CGEN_INSN_MNEMONIC (insn);
494 while (*p && TOLOWER (*p) == TOLOWER (*str))
495 ++p, ++str;
496
497 if (* p)
498 return _("unrecognized instruction");
499
500 #ifndef CGEN_MNEMONIC_OPERANDS
501 if (* str && ! ISSPACE (* str))
502 return _("unrecognized instruction");
503 #endif
504
505 CGEN_INIT_PARSE (cd);
506 cgen_init_parse_operand (cd);
507 #ifdef CGEN_MNEMONIC_OPERANDS
508 past_opcode_p = 0;
509 #endif
510
511 /* We don't check for (*str != '\0') here because we want to parse
512 any trailing fake arguments in the syntax string. */
513 syn = CGEN_SYNTAX_STRING (syntax);
514
515 /* Mnemonics come first for now, ensure valid string. */
516 if (! CGEN_SYNTAX_MNEMONIC_P (* syn))
517 abort ();
518
519 ++syn;
520
521 while (* syn != 0)
522 {
523 /* Non operand chars must match exactly. */
524 if (CGEN_SYNTAX_CHAR_P (* syn))
525 {
526 /* FIXME: While we allow for non-GAS callers above, we assume the
527 first char after the mnemonic part is a space. */
528 /* FIXME: We also take inappropriate advantage of the fact that
529 GAS's input scrubber will remove extraneous blanks. */
530 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn)))
531 {
532 #ifdef CGEN_MNEMONIC_OPERANDS
533 if (CGEN_SYNTAX_CHAR(* syn) == ' ')
534 past_opcode_p = 1;
535 #endif
536 ++ syn;
537 ++ str;
538 }
539 else if (*str)
540 {
541 /* Syntax char didn't match. Can't be this insn. */
542 static char msg [80];
543
544 /* xgettext:c-format */
545 sprintf (msg, _("syntax error (expected char `%c', found `%c')"),
546 CGEN_SYNTAX_CHAR(*syn), *str);
547 return msg;
548 }
549 else
550 {
551 /* Ran out of input. */
552 static char msg [80];
553
554 /* xgettext:c-format */
555 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"),
556 CGEN_SYNTAX_CHAR(*syn));
557 return msg;
558 }
559 continue;
560 }
561
562 #ifdef CGEN_MNEMONIC_OPERANDS
563 (void) past_opcode_p;
564 #endif
565 /* We have an operand of some sort. */
566 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields);
567 if (errmsg)
568 return errmsg;
569
570 /* Done with this operand, continue with next one. */
571 ++ syn;
572 }
573
574 /* If we're at the end of the syntax string, we're done. */
575 if (* syn == 0)
576 {
577 /* FIXME: For the moment we assume a valid `str' can only contain
578 blanks now. IE: We needn't try again with a longer version of
579 the insn and it is assumed that longer versions of insns appear
580 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */
581 while (ISSPACE (* str))
582 ++ str;
583
584 if (* str != '\0')
585 return _("junk at end of line"); /* FIXME: would like to include `str' */
586
587 return NULL;
588 }
589
590 /* We couldn't parse it. */
591 return _("unrecognized instruction");
592 }
593
594 /* Main entry point.
595 This routine is called for each instruction to be assembled.
596 STR points to the insn to be assembled.
597 We assume all necessary tables have been initialized.
598 The assembled instruction, less any fixups, is stored in BUF.
599 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value
600 still needs to be converted to target byte order, otherwise BUF is an array
601 of bytes in target byte order.
602 The result is a pointer to the insn's entry in the opcode table,
603 or NULL if an error occured (an error message will have already been
604 printed).
605
606 Note that when processing (non-alias) macro-insns,
607 this function recurses.
608
609 ??? It's possible to make this cpu-independent.
610 One would have to deal with a few minor things.
611 At this point in time doing so would be more of a curiosity than useful
612 [for example this file isn't _that_ big], but keeping the possibility in
613 mind helps keep the design clean. */
614
615 const CGEN_INSN *
fr30_cgen_assemble_insn(CGEN_CPU_DESC cd,const char * str,CGEN_FIELDS * fields,CGEN_INSN_BYTES_PTR buf,char ** errmsg)616 fr30_cgen_assemble_insn (CGEN_CPU_DESC cd,
617 const char *str,
618 CGEN_FIELDS *fields,
619 CGEN_INSN_BYTES_PTR buf,
620 char **errmsg)
621 {
622 const char *start;
623 CGEN_INSN_LIST *ilist;
624 const char *parse_errmsg = NULL;
625 const char *insert_errmsg = NULL;
626 int recognized_mnemonic = 0;
627
628 /* Skip leading white space. */
629 while (ISSPACE (* str))
630 ++ str;
631
632 /* The instructions are stored in hashed lists.
633 Get the first in the list. */
634 ilist = CGEN_ASM_LOOKUP_INSN (cd, str);
635
636 /* Keep looking until we find a match. */
637 start = str;
638 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist))
639 {
640 const CGEN_INSN *insn = ilist->insn;
641 recognized_mnemonic = 1;
642
643 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
644 /* Not usually needed as unsupported opcodes
645 shouldn't be in the hash lists. */
646 /* Is this insn supported by the selected cpu? */
647 if (! fr30_cgen_insn_supported (cd, insn))
648 continue;
649 #endif
650 /* If the RELAXED attribute is set, this is an insn that shouldn't be
651 chosen immediately. Instead, it is used during assembler/linker
652 relaxation if possible. */
653 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0)
654 continue;
655
656 str = start;
657
658 /* Skip this insn if str doesn't look right lexically. */
659 if (CGEN_INSN_RX (insn) != NULL &&
660 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH)
661 continue;
662
663 /* Allow parse/insert handlers to obtain length of insn. */
664 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
665
666 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields);
667 if (parse_errmsg != NULL)
668 continue;
669
670 /* ??? 0 is passed for `pc'. */
671 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf,
672 (bfd_vma) 0);
673 if (insert_errmsg != NULL)
674 continue;
675
676 /* It is up to the caller to actually output the insn and any
677 queued relocs. */
678 return insn;
679 }
680
681 {
682 static char errbuf[150];
683 const char *tmp_errmsg;
684 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS
685 #define be_verbose 1
686 #else
687 #define be_verbose 0
688 #endif
689
690 if (be_verbose)
691 {
692 /* If requesting verbose error messages, use insert_errmsg.
693 Failing that, use parse_errmsg. */
694 tmp_errmsg = (insert_errmsg ? insert_errmsg :
695 parse_errmsg ? parse_errmsg :
696 recognized_mnemonic ?
697 _("unrecognized form of instruction") :
698 _("unrecognized instruction"));
699
700 if (strlen (start) > 50)
701 /* xgettext:c-format */
702 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start);
703 else
704 /* xgettext:c-format */
705 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start);
706 }
707 else
708 {
709 if (strlen (start) > 50)
710 /* xgettext:c-format */
711 sprintf (errbuf, _("bad instruction `%.50s...'"), start);
712 else
713 /* xgettext:c-format */
714 sprintf (errbuf, _("bad instruction `%.50s'"), start);
715 }
716
717 *errmsg = errbuf;
718 return NULL;
719 }
720 }
721