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) 1996-2017 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 "m32r-desc.h" 35#include "m32r-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 46static const char * parse_insn_normal 47 (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *); 48 49/* -- assembler routines inserted here. */ 50 51/* -- asm.c */ 52static const char * MISSING_CLOSING_PARENTHESIS = N_("missing `)'"); 53 54/* Handle '#' prefixes (i.e. skip over them). */ 55 56static const char * 57parse_hash (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 58 const char **strp, 59 int opindex ATTRIBUTE_UNUSED, 60 long *valuep ATTRIBUTE_UNUSED) 61{ 62 if (**strp == '#') 63 ++*strp; 64 return NULL; 65} 66 67/* Handle shigh(), high(). */ 68 69static const char * 70parse_hi16 (CGEN_CPU_DESC cd, 71 const char **strp, 72 int opindex, 73 unsigned long *valuep) 74{ 75 const char *errmsg; 76 enum cgen_parse_operand_result result_type; 77 bfd_vma value; 78 79 if (**strp == '#') 80 ++*strp; 81 82 if (strncasecmp (*strp, "high(", 5) == 0) 83 { 84 *strp += 5; 85 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_HI16_ULO, 86 & result_type, & value); 87 if (**strp != ')') 88 return MISSING_CLOSING_PARENTHESIS; 89 ++*strp; 90 if (errmsg == NULL 91 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 92 { 93 value >>= 16; 94 value &= 0xffff; 95 } 96 *valuep = value; 97 return errmsg; 98 } 99 else if (strncasecmp (*strp, "shigh(", 6) == 0) 100 { 101 *strp += 6; 102 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_HI16_SLO, 103 & result_type, & value); 104 if (**strp != ')') 105 return MISSING_CLOSING_PARENTHESIS; 106 ++*strp; 107 if (errmsg == NULL 108 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 109 { 110 value += 0x8000; 111 value >>= 16; 112 value &= 0xffff; 113 } 114 *valuep = value; 115 return errmsg; 116 } 117 118 return cgen_parse_unsigned_integer (cd, strp, opindex, valuep); 119} 120 121/* Handle low() in a signed context. Also handle sda(). 122 The signedness of the value doesn't matter to low(), but this also 123 handles the case where low() isn't present. */ 124 125static const char * 126parse_slo16 (CGEN_CPU_DESC cd, 127 const char ** strp, 128 int opindex, 129 long * valuep) 130{ 131 const char *errmsg; 132 enum cgen_parse_operand_result result_type; 133 bfd_vma value; 134 135 if (**strp == '#') 136 ++*strp; 137 138 if (strncasecmp (*strp, "low(", 4) == 0) 139 { 140 *strp += 4; 141 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_LO16, 142 & result_type, & value); 143 if (**strp != ')') 144 return MISSING_CLOSING_PARENTHESIS; 145 ++*strp; 146 if (errmsg == NULL 147 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 148 value = ((value & 0xffff) ^ 0x8000) - 0x8000; 149 *valuep = value; 150 return errmsg; 151 } 152 153 if (strncasecmp (*strp, "sda(", 4) == 0) 154 { 155 *strp += 4; 156 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_SDA16, 157 NULL, & value); 158 if (**strp != ')') 159 return MISSING_CLOSING_PARENTHESIS; 160 ++*strp; 161 *valuep = value; 162 return errmsg; 163 } 164 165 return cgen_parse_signed_integer (cd, strp, opindex, valuep); 166} 167 168/* Handle low() in an unsigned context. 169 The signedness of the value doesn't matter to low(), but this also 170 handles the case where low() isn't present. */ 171 172static const char * 173parse_ulo16 (CGEN_CPU_DESC cd, 174 const char **strp, 175 int opindex, 176 unsigned long *valuep) 177{ 178 const char *errmsg; 179 enum cgen_parse_operand_result result_type; 180 bfd_vma value; 181 182 if (**strp == '#') 183 ++*strp; 184 185 if (strncasecmp (*strp, "low(", 4) == 0) 186 { 187 *strp += 4; 188 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_M32R_LO16, 189 & result_type, & value); 190 if (**strp != ')') 191 return MISSING_CLOSING_PARENTHESIS; 192 ++*strp; 193 if (errmsg == NULL 194 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 195 value &= 0xffff; 196 *valuep = value; 197 return errmsg; 198 } 199 200 return cgen_parse_unsigned_integer (cd, strp, opindex, valuep); 201} 202 203/* -- */ 204 205const char * m32r_cgen_parse_operand 206 (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *); 207 208/* Main entry point for operand parsing. 209 210 This function is basically just a big switch statement. Earlier versions 211 used tables to look up the function to use, but 212 - if the table contains both assembler and disassembler functions then 213 the disassembler contains much of the assembler and vice-versa, 214 - there's a lot of inlining possibilities as things grow, 215 - using a switch statement avoids the function call overhead. 216 217 This function could be moved into `parse_insn_normal', but keeping it 218 separate makes clear the interface between `parse_insn_normal' and each of 219 the handlers. */ 220 221const char * 222m32r_cgen_parse_operand (CGEN_CPU_DESC cd, 223 int opindex, 224 const char ** strp, 225 CGEN_FIELDS * fields) 226{ 227 const char * errmsg = NULL; 228 /* Used by scalar operands that still need to be parsed. */ 229 long junk ATTRIBUTE_UNUSED; 230 231 switch (opindex) 232 { 233 case M32R_OPERAND_ACC : 234 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_h_accums, & fields->f_acc); 235 break; 236 case M32R_OPERAND_ACCD : 237 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_h_accums, & fields->f_accd); 238 break; 239 case M32R_OPERAND_ACCS : 240 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_h_accums, & fields->f_accs); 241 break; 242 case M32R_OPERAND_DCR : 243 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_cr_names, & fields->f_r1); 244 break; 245 case M32R_OPERAND_DISP16 : 246 { 247 bfd_vma value = 0; 248 errmsg = cgen_parse_address (cd, strp, M32R_OPERAND_DISP16, 0, NULL, & value); 249 fields->f_disp16 = value; 250 } 251 break; 252 case M32R_OPERAND_DISP24 : 253 { 254 bfd_vma value = 0; 255 errmsg = cgen_parse_address (cd, strp, M32R_OPERAND_DISP24, 0, NULL, & value); 256 fields->f_disp24 = value; 257 } 258 break; 259 case M32R_OPERAND_DISP8 : 260 { 261 bfd_vma value = 0; 262 errmsg = cgen_parse_address (cd, strp, M32R_OPERAND_DISP8, 0, NULL, & value); 263 fields->f_disp8 = value; 264 } 265 break; 266 case M32R_OPERAND_DR : 267 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_gr_names, & fields->f_r1); 268 break; 269 case M32R_OPERAND_HASH : 270 errmsg = parse_hash (cd, strp, M32R_OPERAND_HASH, (long *) (& junk)); 271 break; 272 case M32R_OPERAND_HI16 : 273 errmsg = parse_hi16 (cd, strp, M32R_OPERAND_HI16, (unsigned long *) (& fields->f_hi16)); 274 break; 275 case M32R_OPERAND_IMM1 : 276 errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_IMM1, (unsigned long *) (& fields->f_imm1)); 277 break; 278 case M32R_OPERAND_SCR : 279 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_cr_names, & fields->f_r2); 280 break; 281 case M32R_OPERAND_SIMM16 : 282 errmsg = cgen_parse_signed_integer (cd, strp, M32R_OPERAND_SIMM16, (long *) (& fields->f_simm16)); 283 break; 284 case M32R_OPERAND_SIMM8 : 285 errmsg = cgen_parse_signed_integer (cd, strp, M32R_OPERAND_SIMM8, (long *) (& fields->f_simm8)); 286 break; 287 case M32R_OPERAND_SLO16 : 288 errmsg = parse_slo16 (cd, strp, M32R_OPERAND_SLO16, (long *) (& fields->f_simm16)); 289 break; 290 case M32R_OPERAND_SR : 291 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_gr_names, & fields->f_r2); 292 break; 293 case M32R_OPERAND_SRC1 : 294 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_gr_names, & fields->f_r1); 295 break; 296 case M32R_OPERAND_SRC2 : 297 errmsg = cgen_parse_keyword (cd, strp, & m32r_cgen_opval_gr_names, & fields->f_r2); 298 break; 299 case M32R_OPERAND_UIMM16 : 300 errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM16, (unsigned long *) (& fields->f_uimm16)); 301 break; 302 case M32R_OPERAND_UIMM24 : 303 { 304 bfd_vma value = 0; 305 errmsg = cgen_parse_address (cd, strp, M32R_OPERAND_UIMM24, 0, NULL, & value); 306 fields->f_uimm24 = value; 307 } 308 break; 309 case M32R_OPERAND_UIMM3 : 310 errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM3, (unsigned long *) (& fields->f_uimm3)); 311 break; 312 case M32R_OPERAND_UIMM4 : 313 errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM4, (unsigned long *) (& fields->f_uimm4)); 314 break; 315 case M32R_OPERAND_UIMM5 : 316 errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM5, (unsigned long *) (& fields->f_uimm5)); 317 break; 318 case M32R_OPERAND_UIMM8 : 319 errmsg = cgen_parse_unsigned_integer (cd, strp, M32R_OPERAND_UIMM8, (unsigned long *) (& fields->f_uimm8)); 320 break; 321 case M32R_OPERAND_ULO16 : 322 errmsg = parse_ulo16 (cd, strp, M32R_OPERAND_ULO16, (unsigned long *) (& fields->f_uimm16)); 323 break; 324 325 default : 326 /* xgettext:c-format */ 327 fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex); 328 abort (); 329 } 330 331 return errmsg; 332} 333 334cgen_parse_fn * const m32r_cgen_parse_handlers[] = 335{ 336 parse_insn_normal, 337}; 338 339void 340m32r_cgen_init_asm (CGEN_CPU_DESC cd) 341{ 342 m32r_cgen_init_opcode_table (cd); 343 m32r_cgen_init_ibld_table (cd); 344 cd->parse_handlers = & m32r_cgen_parse_handlers[0]; 345 cd->parse_operand = m32r_cgen_parse_operand; 346#ifdef CGEN_ASM_INIT_HOOK 347CGEN_ASM_INIT_HOOK 348#endif 349} 350 351 352 353/* Regex construction routine. 354 355 This translates an opcode syntax string into a regex string, 356 by replacing any non-character syntax element (such as an 357 opcode) with the pattern '.*' 358 359 It then compiles the regex and stores it in the opcode, for 360 later use by m32r_cgen_assemble_insn 361 362 Returns NULL for success, an error message for failure. */ 363 364char * 365m32r_cgen_build_insn_regex (CGEN_INSN *insn) 366{ 367 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); 368 const char *mnem = CGEN_INSN_MNEMONIC (insn); 369 char rxbuf[CGEN_MAX_RX_ELEMENTS]; 370 char *rx = rxbuf; 371 const CGEN_SYNTAX_CHAR_TYPE *syn; 372 int reg_err; 373 374 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); 375 376 /* Mnemonics come first in the syntax string. */ 377 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 378 return _("missing mnemonic in syntax string"); 379 ++syn; 380 381 /* Generate a case sensitive regular expression that emulates case 382 insensitive matching in the "C" locale. We cannot generate a case 383 insensitive regular expression because in Turkish locales, 'i' and 'I' 384 are not equal modulo case conversion. */ 385 386 /* Copy the literal mnemonic out of the insn. */ 387 for (; *mnem; mnem++) 388 { 389 char c = *mnem; 390 391 if (ISALPHA (c)) 392 { 393 *rx++ = '['; 394 *rx++ = TOLOWER (c); 395 *rx++ = TOUPPER (c); 396 *rx++ = ']'; 397 } 398 else 399 *rx++ = c; 400 } 401 402 /* Copy any remaining literals from the syntax string into the rx. */ 403 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) 404 { 405 if (CGEN_SYNTAX_CHAR_P (* syn)) 406 { 407 char c = CGEN_SYNTAX_CHAR (* syn); 408 409 switch (c) 410 { 411 /* Escape any regex metacharacters in the syntax. */ 412 case '.': case '[': case '\\': 413 case '*': case '^': case '$': 414 415#ifdef CGEN_ESCAPE_EXTENDED_REGEX 416 case '?': case '{': case '}': 417 case '(': case ')': case '*': 418 case '|': case '+': case ']': 419#endif 420 *rx++ = '\\'; 421 *rx++ = c; 422 break; 423 424 default: 425 if (ISALPHA (c)) 426 { 427 *rx++ = '['; 428 *rx++ = TOLOWER (c); 429 *rx++ = TOUPPER (c); 430 *rx++ = ']'; 431 } 432 else 433 *rx++ = c; 434 break; 435 } 436 } 437 else 438 { 439 /* Replace non-syntax fields with globs. */ 440 *rx++ = '.'; 441 *rx++ = '*'; 442 } 443 } 444 445 /* Trailing whitespace ok. */ 446 * rx++ = '['; 447 * rx++ = ' '; 448 * rx++ = '\t'; 449 * rx++ = ']'; 450 * rx++ = '*'; 451 452 /* But anchor it after that. */ 453 * rx++ = '$'; 454 * rx = '\0'; 455 456 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); 457 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); 458 459 if (reg_err == 0) 460 return NULL; 461 else 462 { 463 static char msg[80]; 464 465 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); 466 regfree ((regex_t *) CGEN_INSN_RX (insn)); 467 free (CGEN_INSN_RX (insn)); 468 (CGEN_INSN_RX (insn)) = NULL; 469 return msg; 470 } 471} 472 473 474/* Default insn parser. 475 476 The syntax string is scanned and operands are parsed and stored in FIELDS. 477 Relocs are queued as we go via other callbacks. 478 479 ??? Note that this is currently an all-or-nothing parser. If we fail to 480 parse the instruction, we return 0 and the caller will start over from 481 the beginning. Backtracking will be necessary in parsing subexpressions, 482 but that can be handled there. Not handling backtracking here may get 483 expensive in the case of the m68k. Deal with later. 484 485 Returns NULL for success, an error message for failure. */ 486 487static const char * 488parse_insn_normal (CGEN_CPU_DESC cd, 489 const CGEN_INSN *insn, 490 const char **strp, 491 CGEN_FIELDS *fields) 492{ 493 /* ??? Runtime added insns not handled yet. */ 494 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 495 const char *str = *strp; 496 const char *errmsg; 497 const char *p; 498 const CGEN_SYNTAX_CHAR_TYPE * syn; 499#ifdef CGEN_MNEMONIC_OPERANDS 500 /* FIXME: wip */ 501 int past_opcode_p; 502#endif 503 504 /* For now we assume the mnemonic is first (there are no leading operands). 505 We can parse it without needing to set up operand parsing. 506 GAS's input scrubber will ensure mnemonics are lowercase, but we may 507 not be called from GAS. */ 508 p = CGEN_INSN_MNEMONIC (insn); 509 while (*p && TOLOWER (*p) == TOLOWER (*str)) 510 ++p, ++str; 511 512 if (* p) 513 return _("unrecognized instruction"); 514 515#ifndef CGEN_MNEMONIC_OPERANDS 516 if (* str && ! ISSPACE (* str)) 517 return _("unrecognized instruction"); 518#endif 519 520 CGEN_INIT_PARSE (cd); 521 cgen_init_parse_operand (cd); 522#ifdef CGEN_MNEMONIC_OPERANDS 523 past_opcode_p = 0; 524#endif 525 526 /* We don't check for (*str != '\0') here because we want to parse 527 any trailing fake arguments in the syntax string. */ 528 syn = CGEN_SYNTAX_STRING (syntax); 529 530 /* Mnemonics come first for now, ensure valid string. */ 531 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 532 abort (); 533 534 ++syn; 535 536 while (* syn != 0) 537 { 538 /* Non operand chars must match exactly. */ 539 if (CGEN_SYNTAX_CHAR_P (* syn)) 540 { 541 /* FIXME: While we allow for non-GAS callers above, we assume the 542 first char after the mnemonic part is a space. */ 543 /* FIXME: We also take inappropriate advantage of the fact that 544 GAS's input scrubber will remove extraneous blanks. */ 545 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) 546 { 547#ifdef CGEN_MNEMONIC_OPERANDS 548 if (CGEN_SYNTAX_CHAR(* syn) == ' ') 549 past_opcode_p = 1; 550#endif 551 ++ syn; 552 ++ str; 553 } 554 else if (*str) 555 { 556 /* Syntax char didn't match. Can't be this insn. */ 557 static char msg [80]; 558 559 /* xgettext:c-format */ 560 sprintf (msg, _("syntax error (expected char `%c', found `%c')"), 561 CGEN_SYNTAX_CHAR(*syn), *str); 562 return msg; 563 } 564 else 565 { 566 /* Ran out of input. */ 567 static char msg [80]; 568 569 /* xgettext:c-format */ 570 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), 571 CGEN_SYNTAX_CHAR(*syn)); 572 return msg; 573 } 574 continue; 575 } 576 577#ifdef CGEN_MNEMONIC_OPERANDS 578 (void) past_opcode_p; 579#endif 580 /* We have an operand of some sort. */ 581 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields); 582 if (errmsg) 583 return errmsg; 584 585 /* Done with this operand, continue with next one. */ 586 ++ syn; 587 } 588 589 /* If we're at the end of the syntax string, we're done. */ 590 if (* syn == 0) 591 { 592 /* FIXME: For the moment we assume a valid `str' can only contain 593 blanks now. IE: We needn't try again with a longer version of 594 the insn and it is assumed that longer versions of insns appear 595 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ 596 while (ISSPACE (* str)) 597 ++ str; 598 599 if (* str != '\0') 600 return _("junk at end of line"); /* FIXME: would like to include `str' */ 601 602 return NULL; 603 } 604 605 /* We couldn't parse it. */ 606 return _("unrecognized instruction"); 607} 608 609/* Main entry point. 610 This routine is called for each instruction to be assembled. 611 STR points to the insn to be assembled. 612 We assume all necessary tables have been initialized. 613 The assembled instruction, less any fixups, is stored in BUF. 614 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value 615 still needs to be converted to target byte order, otherwise BUF is an array 616 of bytes in target byte order. 617 The result is a pointer to the insn's entry in the opcode table, 618 or NULL if an error occured (an error message will have already been 619 printed). 620 621 Note that when processing (non-alias) macro-insns, 622 this function recurses. 623 624 ??? It's possible to make this cpu-independent. 625 One would have to deal with a few minor things. 626 At this point in time doing so would be more of a curiosity than useful 627 [for example this file isn't _that_ big], but keeping the possibility in 628 mind helps keep the design clean. */ 629 630const CGEN_INSN * 631m32r_cgen_assemble_insn (CGEN_CPU_DESC cd, 632 const char *str, 633 CGEN_FIELDS *fields, 634 CGEN_INSN_BYTES_PTR buf, 635 char **errmsg) 636{ 637 const char *start; 638 CGEN_INSN_LIST *ilist; 639 const char *parse_errmsg = NULL; 640 const char *insert_errmsg = NULL; 641 int recognized_mnemonic = 0; 642 643 /* Skip leading white space. */ 644 while (ISSPACE (* str)) 645 ++ str; 646 647 /* The instructions are stored in hashed lists. 648 Get the first in the list. */ 649 ilist = CGEN_ASM_LOOKUP_INSN (cd, str); 650 651 /* Keep looking until we find a match. */ 652 start = str; 653 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) 654 { 655 const CGEN_INSN *insn = ilist->insn; 656 recognized_mnemonic = 1; 657 658#ifdef CGEN_VALIDATE_INSN_SUPPORTED 659 /* Not usually needed as unsupported opcodes 660 shouldn't be in the hash lists. */ 661 /* Is this insn supported by the selected cpu? */ 662 if (! m32r_cgen_insn_supported (cd, insn)) 663 continue; 664#endif 665 /* If the RELAXED attribute is set, this is an insn that shouldn't be 666 chosen immediately. Instead, it is used during assembler/linker 667 relaxation if possible. */ 668 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) 669 continue; 670 671 str = start; 672 673 /* Skip this insn if str doesn't look right lexically. */ 674 if (CGEN_INSN_RX (insn) != NULL && 675 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) 676 continue; 677 678 /* Allow parse/insert handlers to obtain length of insn. */ 679 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 680 681 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); 682 if (parse_errmsg != NULL) 683 continue; 684 685 /* ??? 0 is passed for `pc'. */ 686 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, 687 (bfd_vma) 0); 688 if (insert_errmsg != NULL) 689 continue; 690 691 /* It is up to the caller to actually output the insn and any 692 queued relocs. */ 693 return insn; 694 } 695 696 { 697 static char errbuf[150]; 698 const char *tmp_errmsg; 699#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS 700#define be_verbose 1 701#else 702#define be_verbose 0 703#endif 704 705 if (be_verbose) 706 { 707 /* If requesting verbose error messages, use insert_errmsg. 708 Failing that, use parse_errmsg. */ 709 tmp_errmsg = (insert_errmsg ? insert_errmsg : 710 parse_errmsg ? parse_errmsg : 711 recognized_mnemonic ? 712 _("unrecognized form of instruction") : 713 _("unrecognized instruction")); 714 715 if (strlen (start) > 50) 716 /* xgettext:c-format */ 717 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); 718 else 719 /* xgettext:c-format */ 720 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); 721 } 722 else 723 { 724 if (strlen (start) > 50) 725 /* xgettext:c-format */ 726 sprintf (errbuf, _("bad instruction `%.50s...'"), start); 727 else 728 /* xgettext:c-format */ 729 sprintf (errbuf, _("bad instruction `%.50s'"), start); 730 } 731 732 *errmsg = errbuf; 733 return NULL; 734 } 735} 736