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 (C) 1996-2014 Free Software Foundation, Inc. 8 9 This file is part of libopcodes. 10 11 This library 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 3, or (at your option) 14 any later version. 15 16 It is distributed in the hope that it will be useful, but WITHOUT 17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 18 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 19 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 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 24 25 26 /* ??? Eventually more and more of this stuff can go to cpu-independent files. 27 Keep that in mind. */ 28 29 #include "sysdep.h" 30 #include <stdio.h> 31 #include "ansidecl.h" 32 #include "bfd.h" 33 #include "symcat.h" 34 #include "fr30-desc.h" 35 #include "fr30-opc.h" 36 #include "opintl.h" 37 #include "xregex.h" 38 #include "libiberty.h" 39 #include "safe-ctype.h" 40 41 #undef min 42 #define min(a,b) ((a) < (b) ? (a) : (b)) 43 #undef max 44 #define max(a,b) ((a) > (b) ? (a) : (b)) 45 46 static const char * parse_insn_normal 47 (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *); 48 49 /* -- assembler routines inserted here. */ 51 52 /* -- asm.c */ 53 /* Handle register lists for LDMx and STMx. */ 54 55 static int 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 * 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 * 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 * 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 * 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 * 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 * 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 fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex); 311 abort (); 312 } 313 314 return errmsg; 315 } 316 317 cgen_parse_fn * const fr30_cgen_parse_handlers[] = 318 { 319 parse_insn_normal, 320 }; 321 322 void 323 fr30_cgen_init_asm (CGEN_CPU_DESC cd) 324 { 325 fr30_cgen_init_opcode_table (cd); 326 fr30_cgen_init_ibld_table (cd); 327 cd->parse_handlers = & fr30_cgen_parse_handlers[0]; 328 cd->parse_operand = fr30_cgen_parse_operand; 329 #ifdef CGEN_ASM_INIT_HOOK 330 CGEN_ASM_INIT_HOOK 331 #endif 332 } 333 334 335 337 /* Regex construction routine. 338 339 This translates an opcode syntax string into a regex string, 340 by replacing any non-character syntax element (such as an 341 opcode) with the pattern '.*' 342 343 It then compiles the regex and stores it in the opcode, for 344 later use by fr30_cgen_assemble_insn 345 346 Returns NULL for success, an error message for failure. */ 347 348 char * 349 fr30_cgen_build_insn_regex (CGEN_INSN *insn) 350 { 351 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); 352 const char *mnem = CGEN_INSN_MNEMONIC (insn); 353 char rxbuf[CGEN_MAX_RX_ELEMENTS]; 354 char *rx = rxbuf; 355 const CGEN_SYNTAX_CHAR_TYPE *syn; 356 int reg_err; 357 358 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); 359 360 /* Mnemonics come first in the syntax string. */ 361 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 362 return _("missing mnemonic in syntax string"); 363 ++syn; 364 365 /* Generate a case sensitive regular expression that emulates case 366 insensitive matching in the "C" locale. We cannot generate a case 367 insensitive regular expression because in Turkish locales, 'i' and 'I' 368 are not equal modulo case conversion. */ 369 370 /* Copy the literal mnemonic out of the insn. */ 371 for (; *mnem; mnem++) 372 { 373 char c = *mnem; 374 375 if (ISALPHA (c)) 376 { 377 *rx++ = '['; 378 *rx++ = TOLOWER (c); 379 *rx++ = TOUPPER (c); 380 *rx++ = ']'; 381 } 382 else 383 *rx++ = c; 384 } 385 386 /* Copy any remaining literals from the syntax string into the rx. */ 387 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) 388 { 389 if (CGEN_SYNTAX_CHAR_P (* syn)) 390 { 391 char c = CGEN_SYNTAX_CHAR (* syn); 392 393 switch (c) 394 { 395 /* Escape any regex metacharacters in the syntax. */ 396 case '.': case '[': case '\\': 397 case '*': case '^': case '$': 398 399 #ifdef CGEN_ESCAPE_EXTENDED_REGEX 400 case '?': case '{': case '}': 401 case '(': case ')': case '*': 402 case '|': case '+': case ']': 403 #endif 404 *rx++ = '\\'; 405 *rx++ = c; 406 break; 407 408 default: 409 if (ISALPHA (c)) 410 { 411 *rx++ = '['; 412 *rx++ = TOLOWER (c); 413 *rx++ = TOUPPER (c); 414 *rx++ = ']'; 415 } 416 else 417 *rx++ = c; 418 break; 419 } 420 } 421 else 422 { 423 /* Replace non-syntax fields with globs. */ 424 *rx++ = '.'; 425 *rx++ = '*'; 426 } 427 } 428 429 /* Trailing whitespace ok. */ 430 * rx++ = '['; 431 * rx++ = ' '; 432 * rx++ = '\t'; 433 * rx++ = ']'; 434 * rx++ = '*'; 435 436 /* But anchor it after that. */ 437 * rx++ = '$'; 438 * rx = '\0'; 439 440 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); 441 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); 442 443 if (reg_err == 0) 444 return NULL; 445 else 446 { 447 static char msg[80]; 448 449 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); 450 regfree ((regex_t *) CGEN_INSN_RX (insn)); 451 free (CGEN_INSN_RX (insn)); 452 (CGEN_INSN_RX (insn)) = NULL; 453 return msg; 454 } 455 } 456 457 458 /* 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 * 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. 596 This routine is called for each instruction to be assembled. 597 STR points to the insn to be assembled. 598 We assume all necessary tables have been initialized. 599 The assembled instruction, less any fixups, is stored in BUF. 600 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value 601 still needs to be converted to target byte order, otherwise BUF is an array 602 of bytes in target byte order. 603 The result is a pointer to the insn's entry in the opcode table, 604 or NULL if an error occured (an error message will have already been 605 printed). 606 607 Note that when processing (non-alias) macro-insns, 608 this function recurses. 609 610 ??? It's possible to make this cpu-independent. 611 One would have to deal with a few minor things. 612 At this point in time doing so would be more of a curiosity than useful 613 [for example this file isn't _that_ big], but keeping the possibility in 614 mind helps keep the design clean. */ 615 616 const CGEN_INSN * 617 fr30_cgen_assemble_insn (CGEN_CPU_DESC cd, 618 const char *str, 619 CGEN_FIELDS *fields, 620 CGEN_INSN_BYTES_PTR buf, 621 char **errmsg) 622 { 623 const char *start; 624 CGEN_INSN_LIST *ilist; 625 const char *parse_errmsg = NULL; 626 const char *insert_errmsg = NULL; 627 int recognized_mnemonic = 0; 628 629 /* Skip leading white space. */ 630 while (ISSPACE (* str)) 631 ++ str; 632 633 /* The instructions are stored in hashed lists. 634 Get the first in the list. */ 635 ilist = CGEN_ASM_LOOKUP_INSN (cd, str); 636 637 /* Keep looking until we find a match. */ 638 start = str; 639 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) 640 { 641 const CGEN_INSN *insn = ilist->insn; 642 recognized_mnemonic = 1; 643 644 #ifdef CGEN_VALIDATE_INSN_SUPPORTED 645 /* Not usually needed as unsupported opcodes 646 shouldn't be in the hash lists. */ 647 /* Is this insn supported by the selected cpu? */ 648 if (! fr30_cgen_insn_supported (cd, insn)) 649 continue; 650 #endif 651 /* If the RELAXED attribute is set, this is an insn that shouldn't be 652 chosen immediately. Instead, it is used during assembler/linker 653 relaxation if possible. */ 654 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) 655 continue; 656 657 str = start; 658 659 /* Skip this insn if str doesn't look right lexically. */ 660 if (CGEN_INSN_RX (insn) != NULL && 661 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) 662 continue; 663 664 /* Allow parse/insert handlers to obtain length of insn. */ 665 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 666 667 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); 668 if (parse_errmsg != NULL) 669 continue; 670 671 /* ??? 0 is passed for `pc'. */ 672 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, 673 (bfd_vma) 0); 674 if (insert_errmsg != NULL) 675 continue; 676 677 /* It is up to the caller to actually output the insn and any 678 queued relocs. */ 679 return insn; 680 } 681 682 { 683 static char errbuf[150]; 684 const char *tmp_errmsg; 685 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS 686 #define be_verbose 1 687 #else 688 #define be_verbose 0 689 #endif 690 691 if (be_verbose) 692 { 693 /* If requesting verbose error messages, use insert_errmsg. 694 Failing that, use parse_errmsg. */ 695 tmp_errmsg = (insert_errmsg ? insert_errmsg : 696 parse_errmsg ? parse_errmsg : 697 recognized_mnemonic ? 698 _("unrecognized form of instruction") : 699 _("unrecognized instruction")); 700 701 if (strlen (start) > 50) 702 /* xgettext:c-format */ 703 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); 704 else 705 /* xgettext:c-format */ 706 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); 707 } 708 else 709 { 710 if (strlen (start) > 50) 711 /* xgettext:c-format */ 712 sprintf (errbuf, _("bad instruction `%.50s...'"), start); 713 else 714 /* xgettext:c-format */ 715 sprintf (errbuf, _("bad instruction `%.50s'"), start); 716 } 717 718 *errmsg = errbuf; 719 return NULL; 720 } 721 } 722
