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, 2005, 2007 8 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 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 } 333 334 335 336 /* Regex construction routine. 337 338 This translates an opcode syntax string into a regex string, 339 by replacing any non-character syntax element (such as an 340 opcode) with the pattern '.*' 341 342 It then compiles the regex and stores it in the opcode, for 343 later use by fr30_cgen_assemble_insn 344 345 Returns NULL for success, an error message for failure. */ 346 347 char * 348 fr30_cgen_build_insn_regex (CGEN_INSN *insn) 349 { 350 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); 351 const char *mnem = CGEN_INSN_MNEMONIC (insn); 352 char rxbuf[CGEN_MAX_RX_ELEMENTS]; 353 char *rx = rxbuf; 354 const CGEN_SYNTAX_CHAR_TYPE *syn; 355 int reg_err; 356 357 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); 358 359 /* Mnemonics come first in the syntax string. */ 360 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 361 return _("missing mnemonic in syntax string"); 362 ++syn; 363 364 /* Generate a case sensitive regular expression that emulates case 365 insensitive matching in the "C" locale. We cannot generate a case 366 insensitive regular expression because in Turkish locales, 'i' and 'I' 367 are not equal modulo case conversion. */ 368 369 /* Copy the literal mnemonic out of the insn. */ 370 for (; *mnem; mnem++) 371 { 372 char c = *mnem; 373 374 if (ISALPHA (c)) 375 { 376 *rx++ = '['; 377 *rx++ = TOLOWER (c); 378 *rx++ = TOUPPER (c); 379 *rx++ = ']'; 380 } 381 else 382 *rx++ = c; 383 } 384 385 /* Copy any remaining literals from the syntax string into the rx. */ 386 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) 387 { 388 if (CGEN_SYNTAX_CHAR_P (* syn)) 389 { 390 char c = CGEN_SYNTAX_CHAR (* syn); 391 392 switch (c) 393 { 394 /* Escape any regex metacharacters in the syntax. */ 395 case '.': case '[': case '\\': 396 case '*': case '^': case '$': 397 398 #ifdef CGEN_ESCAPE_EXTENDED_REGEX 399 case '?': case '{': case '}': 400 case '(': case ')': case '*': 401 case '|': case '+': case ']': 402 #endif 403 *rx++ = '\\'; 404 *rx++ = c; 405 break; 406 407 default: 408 if (ISALPHA (c)) 409 { 410 *rx++ = '['; 411 *rx++ = TOLOWER (c); 412 *rx++ = TOUPPER (c); 413 *rx++ = ']'; 414 } 415 else 416 *rx++ = c; 417 break; 418 } 419 } 420 else 421 { 422 /* Replace non-syntax fields with globs. */ 423 *rx++ = '.'; 424 *rx++ = '*'; 425 } 426 } 427 428 /* Trailing whitespace ok. */ 429 * rx++ = '['; 430 * rx++ = ' '; 431 * rx++ = '\t'; 432 * rx++ = ']'; 433 * rx++ = '*'; 434 435 /* But anchor it after that. */ 436 * rx++ = '$'; 437 * rx = '\0'; 438 439 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); 440 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); 441 442 if (reg_err == 0) 443 return NULL; 444 else 445 { 446 static char msg[80]; 447 448 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); 449 regfree ((regex_t *) CGEN_INSN_RX (insn)); 450 free (CGEN_INSN_RX (insn)); 451 (CGEN_INSN_RX (insn)) = NULL; 452 return msg; 453 } 454 } 455 456 457 /* Default insn parser. 458 459 The syntax string is scanned and operands are parsed and stored in FIELDS. 460 Relocs are queued as we go via other callbacks. 461 462 ??? Note that this is currently an all-or-nothing parser. If we fail to 463 parse the instruction, we return 0 and the caller will start over from 464 the beginning. Backtracking will be necessary in parsing subexpressions, 465 but that can be handled there. Not handling backtracking here may get 466 expensive in the case of the m68k. Deal with later. 467 468 Returns NULL for success, an error message for failure. */ 469 470 static const char * 471 parse_insn_normal (CGEN_CPU_DESC cd, 472 const CGEN_INSN *insn, 473 const char **strp, 474 CGEN_FIELDS *fields) 475 { 476 /* ??? Runtime added insns not handled yet. */ 477 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 478 const char *str = *strp; 479 const char *errmsg; 480 const char *p; 481 const CGEN_SYNTAX_CHAR_TYPE * syn; 482 #ifdef CGEN_MNEMONIC_OPERANDS 483 /* FIXME: wip */ 484 int past_opcode_p; 485 #endif 486 487 /* For now we assume the mnemonic is first (there are no leading operands). 488 We can parse it without needing to set up operand parsing. 489 GAS's input scrubber will ensure mnemonics are lowercase, but we may 490 not be called from GAS. */ 491 p = CGEN_INSN_MNEMONIC (insn); 492 while (*p && TOLOWER (*p) == TOLOWER (*str)) 493 ++p, ++str; 494 495 if (* p) 496 return _("unrecognized instruction"); 497 498 #ifndef CGEN_MNEMONIC_OPERANDS 499 if (* str && ! ISSPACE (* str)) 500 return _("unrecognized instruction"); 501 #endif 502 503 CGEN_INIT_PARSE (cd); 504 cgen_init_parse_operand (cd); 505 #ifdef CGEN_MNEMONIC_OPERANDS 506 past_opcode_p = 0; 507 #endif 508 509 /* We don't check for (*str != '\0') here because we want to parse 510 any trailing fake arguments in the syntax string. */ 511 syn = CGEN_SYNTAX_STRING (syntax); 512 513 /* Mnemonics come first for now, ensure valid string. */ 514 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 515 abort (); 516 517 ++syn; 518 519 while (* syn != 0) 520 { 521 /* Non operand chars must match exactly. */ 522 if (CGEN_SYNTAX_CHAR_P (* syn)) 523 { 524 /* FIXME: While we allow for non-GAS callers above, we assume the 525 first char after the mnemonic part is a space. */ 526 /* FIXME: We also take inappropriate advantage of the fact that 527 GAS's input scrubber will remove extraneous blanks. */ 528 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) 529 { 530 #ifdef CGEN_MNEMONIC_OPERANDS 531 if (CGEN_SYNTAX_CHAR(* syn) == ' ') 532 past_opcode_p = 1; 533 #endif 534 ++ syn; 535 ++ str; 536 } 537 else if (*str) 538 { 539 /* Syntax char didn't match. Can't be this insn. */ 540 static char msg [80]; 541 542 /* xgettext:c-format */ 543 sprintf (msg, _("syntax error (expected char `%c', found `%c')"), 544 CGEN_SYNTAX_CHAR(*syn), *str); 545 return msg; 546 } 547 else 548 { 549 /* Ran out of input. */ 550 static char msg [80]; 551 552 /* xgettext:c-format */ 553 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), 554 CGEN_SYNTAX_CHAR(*syn)); 555 return msg; 556 } 557 continue; 558 } 559 560 /* We have an operand of some sort. */ 561 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), 562 &str, fields); 563 if (errmsg) 564 return errmsg; 565 566 /* Done with this operand, continue with next one. */ 567 ++ syn; 568 } 569 570 /* If we're at the end of the syntax string, we're done. */ 571 if (* syn == 0) 572 { 573 /* FIXME: For the moment we assume a valid `str' can only contain 574 blanks now. IE: We needn't try again with a longer version of 575 the insn and it is assumed that longer versions of insns appear 576 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ 577 while (ISSPACE (* str)) 578 ++ str; 579 580 if (* str != '\0') 581 return _("junk at end of line"); /* FIXME: would like to include `str' */ 582 583 return NULL; 584 } 585 586 /* We couldn't parse it. */ 587 return _("unrecognized instruction"); 588 } 589 590 /* Main entry point. 591 This routine is called for each instruction to be assembled. 592 STR points to the insn to be assembled. 593 We assume all necessary tables have been initialized. 594 The assembled instruction, less any fixups, is stored in BUF. 595 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value 596 still needs to be converted to target byte order, otherwise BUF is an array 597 of bytes in target byte order. 598 The result is a pointer to the insn's entry in the opcode table, 599 or NULL if an error occured (an error message will have already been 600 printed). 601 602 Note that when processing (non-alias) macro-insns, 603 this function recurses. 604 605 ??? It's possible to make this cpu-independent. 606 One would have to deal with a few minor things. 607 At this point in time doing so would be more of a curiosity than useful 608 [for example this file isn't _that_ big], but keeping the possibility in 609 mind helps keep the design clean. */ 610 611 const CGEN_INSN * 612 fr30_cgen_assemble_insn (CGEN_CPU_DESC cd, 613 const char *str, 614 CGEN_FIELDS *fields, 615 CGEN_INSN_BYTES_PTR buf, 616 char **errmsg) 617 { 618 const char *start; 619 CGEN_INSN_LIST *ilist; 620 const char *parse_errmsg = NULL; 621 const char *insert_errmsg = NULL; 622 int recognized_mnemonic = 0; 623 624 /* Skip leading white space. */ 625 while (ISSPACE (* str)) 626 ++ str; 627 628 /* The instructions are stored in hashed lists. 629 Get the first in the list. */ 630 ilist = CGEN_ASM_LOOKUP_INSN (cd, str); 631 632 /* Keep looking until we find a match. */ 633 start = str; 634 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) 635 { 636 const CGEN_INSN *insn = ilist->insn; 637 recognized_mnemonic = 1; 638 639 #ifdef CGEN_VALIDATE_INSN_SUPPORTED 640 /* Not usually needed as unsupported opcodes 641 shouldn't be in the hash lists. */ 642 /* Is this insn supported by the selected cpu? */ 643 if (! fr30_cgen_insn_supported (cd, insn)) 644 continue; 645 #endif 646 /* If the RELAXED attribute is set, this is an insn that shouldn't be 647 chosen immediately. Instead, it is used during assembler/linker 648 relaxation if possible. */ 649 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) 650 continue; 651 652 str = start; 653 654 /* Skip this insn if str doesn't look right lexically. */ 655 if (CGEN_INSN_RX (insn) != NULL && 656 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) 657 continue; 658 659 /* Allow parse/insert handlers to obtain length of insn. */ 660 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 661 662 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); 663 if (parse_errmsg != NULL) 664 continue; 665 666 /* ??? 0 is passed for `pc'. */ 667 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, 668 (bfd_vma) 0); 669 if (insert_errmsg != NULL) 670 continue; 671 672 /* It is up to the caller to actually output the insn and any 673 queued relocs. */ 674 return insn; 675 } 676 677 { 678 static char errbuf[150]; 679 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS 680 const char *tmp_errmsg; 681 682 /* If requesting verbose error messages, use insert_errmsg. 683 Failing that, use parse_errmsg. */ 684 tmp_errmsg = (insert_errmsg ? insert_errmsg : 685 parse_errmsg ? parse_errmsg : 686 recognized_mnemonic ? 687 _("unrecognized form of instruction") : 688 _("unrecognized instruction")); 689 690 if (strlen (start) > 50) 691 /* xgettext:c-format */ 692 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); 693 else 694 /* xgettext:c-format */ 695 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); 696 #else 697 if (strlen (start) > 50) 698 /* xgettext:c-format */ 699 sprintf (errbuf, _("bad instruction `%.50s...'"), start); 700 else 701 /* xgettext:c-format */ 702 sprintf (errbuf, _("bad instruction `%.50s'"), start); 703 #endif 704 705 *errmsg = errbuf; 706 return NULL; 707 } 708 } 709