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) 1996-2016 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 "lm32-desc.h" 35 #include "lm32-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 54 /* Handle signed/unsigned literal. */ 55 56 static const char * 57 parse_imm (CGEN_CPU_DESC cd, 58 const char **strp, 59 int opindex, 60 unsigned long *valuep) 61 { 62 const char *errmsg; 63 signed long value; 64 65 errmsg = cgen_parse_signed_integer (cd, strp, opindex, & value); 66 if (errmsg == NULL) 67 { 68 unsigned long x = value & 0xFFFF0000; 69 if (x != 0 && x != 0xFFFF0000) 70 errmsg = _("immediate value out of range"); 71 else 72 *valuep = (value & 0xFFFF); 73 } 74 return errmsg; 75 } 76 77 /* Handle hi() */ 78 79 static const char * 80 parse_hi16 (CGEN_CPU_DESC cd, 81 const char **strp, 82 int opindex, 83 unsigned long *valuep) 84 { 85 if (strncasecmp (*strp, "hi(", 3) == 0) 86 { 87 enum cgen_parse_operand_result result_type; 88 bfd_vma value; 89 const char *errmsg; 90 91 *strp += 3; 92 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_HI16, 93 &result_type, &value); 94 if (**strp != ')') 95 return _("missing `)'"); 96 97 ++*strp; 98 if (errmsg == NULL 99 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 100 value = (value >> 16) & 0xffff; 101 *valuep = value; 102 103 return errmsg; 104 } 105 106 return parse_imm (cd, strp, opindex, valuep); 107 } 108 109 /* Handle lo() */ 110 111 static const char * 112 parse_lo16 (CGEN_CPU_DESC cd, 113 const char **strp, 114 int opindex, 115 unsigned long *valuep) 116 { 117 if (strncasecmp (*strp, "lo(", 3) == 0) 118 { 119 const char *errmsg; 120 enum cgen_parse_operand_result result_type; 121 bfd_vma value; 122 123 *strp += 3; 124 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LO16, 125 &result_type, &value); 126 if (**strp != ')') 127 return _("missing `)'"); 128 ++*strp; 129 if (errmsg == NULL 130 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 131 value &= 0xffff; 132 *valuep = value; 133 return errmsg; 134 } 135 136 return parse_imm (cd, strp, opindex, valuep); 137 } 138 139 /* Handle gp() */ 140 141 static const char * 142 parse_gp16 (CGEN_CPU_DESC cd, 143 const char **strp, 144 int opindex, 145 long *valuep) 146 { 147 if (strncasecmp (*strp, "gp(", 3) == 0) 148 { 149 const char *errmsg; 150 enum cgen_parse_operand_result result_type; 151 bfd_vma value; 152 153 *strp += 3; 154 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_GPREL16, 155 & result_type, & value); 156 if (**strp != ')') 157 return _("missing `)'"); 158 ++*strp; 159 if (errmsg == NULL 160 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 161 value &= 0xffff; 162 *valuep = value; 163 return errmsg; 164 } 165 166 return _("expecting gp relative address: gp(symbol)"); 167 } 168 169 /* Handle got() */ 170 171 static const char * 172 parse_got16 (CGEN_CPU_DESC cd, 173 const char **strp, 174 int opindex, 175 long *valuep) 176 { 177 if (strncasecmp (*strp, "got(", 4) == 0) 178 { 179 const char *errmsg; 180 enum cgen_parse_operand_result result_type; 181 bfd_vma value; 182 183 *strp += 4; 184 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LM32_16_GOT, 185 & result_type, & value); 186 if (**strp != ')') 187 return _("missing `)'"); 188 ++*strp; 189 if (errmsg == NULL 190 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 191 value &= 0xffff; 192 *valuep = value; 193 return errmsg; 194 } 195 196 return _("expecting got relative address: got(symbol)"); 197 } 198 199 /* Handle gotoffhi16() */ 200 201 static const char * 202 parse_gotoff_hi16 (CGEN_CPU_DESC cd, 203 const char **strp, 204 int opindex, 205 long *valuep) 206 { 207 if (strncasecmp (*strp, "gotoffhi16(", 11) == 0) 208 { 209 const char *errmsg; 210 enum cgen_parse_operand_result result_type; 211 bfd_vma value; 212 213 *strp += 11; 214 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LM32_GOTOFF_HI16, 215 & result_type, & value); 216 if (**strp != ')') 217 return _("missing `)'"); 218 ++*strp; 219 if (errmsg == NULL 220 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 221 value &= 0xffff; 222 *valuep = value; 223 return errmsg; 224 } 225 226 return _("expecting got relative address: gotoffhi16(symbol)"); 227 } 228 229 /* Handle gotofflo16() */ 230 231 static const char * 232 parse_gotoff_lo16 (CGEN_CPU_DESC cd, 233 const char **strp, 234 int opindex, 235 long *valuep) 236 { 237 if (strncasecmp (*strp, "gotofflo16(", 11) == 0) 238 { 239 const char *errmsg; 240 enum cgen_parse_operand_result result_type; 241 bfd_vma value; 242 243 *strp += 11; 244 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_LM32_GOTOFF_LO16, 245 &result_type, &value); 246 if (**strp != ')') 247 return _("missing `)'"); 248 ++*strp; 249 if (errmsg == NULL 250 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 251 value &= 0xffff; 252 *valuep = value; 253 return errmsg; 254 } 255 256 return _("expecting got relative address: gotofflo16(symbol)"); 257 } 258 259 const char * lm32_cgen_parse_operand 260 (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *); 261 262 /* Main entry point for operand parsing. 263 264 This function is basically just a big switch statement. Earlier versions 265 used tables to look up the function to use, but 266 - if the table contains both assembler and disassembler functions then 267 the disassembler contains much of the assembler and vice-versa, 268 - there's a lot of inlining possibilities as things grow, 269 - using a switch statement avoids the function call overhead. 270 271 This function could be moved into `parse_insn_normal', but keeping it 272 separate makes clear the interface between `parse_insn_normal' and each of 273 the handlers. */ 274 275 const char * 276 lm32_cgen_parse_operand (CGEN_CPU_DESC cd, 277 int opindex, 278 const char ** strp, 279 CGEN_FIELDS * fields) 280 { 281 const char * errmsg = NULL; 282 /* Used by scalar operands that still need to be parsed. */ 283 long junk ATTRIBUTE_UNUSED; 284 285 switch (opindex) 286 { 287 case LM32_OPERAND_BRANCH : 288 { 289 bfd_vma value = 0; 290 errmsg = cgen_parse_address (cd, strp, LM32_OPERAND_BRANCH, 0, NULL, & value); 291 fields->f_branch = value; 292 } 293 break; 294 case LM32_OPERAND_CALL : 295 { 296 bfd_vma value = 0; 297 errmsg = cgen_parse_address (cd, strp, LM32_OPERAND_CALL, 0, NULL, & value); 298 fields->f_call = value; 299 } 300 break; 301 case LM32_OPERAND_CSR : 302 errmsg = cgen_parse_keyword (cd, strp, & lm32_cgen_opval_h_csr, & fields->f_csr); 303 break; 304 case LM32_OPERAND_EXCEPTION : 305 errmsg = cgen_parse_unsigned_integer (cd, strp, LM32_OPERAND_EXCEPTION, (unsigned long *) (& fields->f_exception)); 306 break; 307 case LM32_OPERAND_GOT16 : 308 errmsg = parse_got16 (cd, strp, LM32_OPERAND_GOT16, (long *) (& fields->f_imm)); 309 break; 310 case LM32_OPERAND_GOTOFFHI16 : 311 errmsg = parse_gotoff_hi16 (cd, strp, LM32_OPERAND_GOTOFFHI16, (long *) (& fields->f_imm)); 312 break; 313 case LM32_OPERAND_GOTOFFLO16 : 314 errmsg = parse_gotoff_lo16 (cd, strp, LM32_OPERAND_GOTOFFLO16, (long *) (& fields->f_imm)); 315 break; 316 case LM32_OPERAND_GP16 : 317 errmsg = parse_gp16 (cd, strp, LM32_OPERAND_GP16, (long *) (& fields->f_imm)); 318 break; 319 case LM32_OPERAND_HI16 : 320 errmsg = parse_hi16 (cd, strp, LM32_OPERAND_HI16, (unsigned long *) (& fields->f_uimm)); 321 break; 322 case LM32_OPERAND_IMM : 323 errmsg = cgen_parse_signed_integer (cd, strp, LM32_OPERAND_IMM, (long *) (& fields->f_imm)); 324 break; 325 case LM32_OPERAND_LO16 : 326 errmsg = parse_lo16 (cd, strp, LM32_OPERAND_LO16, (unsigned long *) (& fields->f_uimm)); 327 break; 328 case LM32_OPERAND_R0 : 329 errmsg = cgen_parse_keyword (cd, strp, & lm32_cgen_opval_h_gr, & fields->f_r0); 330 break; 331 case LM32_OPERAND_R1 : 332 errmsg = cgen_parse_keyword (cd, strp, & lm32_cgen_opval_h_gr, & fields->f_r1); 333 break; 334 case LM32_OPERAND_R2 : 335 errmsg = cgen_parse_keyword (cd, strp, & lm32_cgen_opval_h_gr, & fields->f_r2); 336 break; 337 case LM32_OPERAND_SHIFT : 338 errmsg = cgen_parse_unsigned_integer (cd, strp, LM32_OPERAND_SHIFT, (unsigned long *) (& fields->f_shift)); 339 break; 340 case LM32_OPERAND_UIMM : 341 errmsg = cgen_parse_unsigned_integer (cd, strp, LM32_OPERAND_UIMM, (unsigned long *) (& fields->f_uimm)); 342 break; 343 case LM32_OPERAND_USER : 344 errmsg = cgen_parse_unsigned_integer (cd, strp, LM32_OPERAND_USER, (unsigned long *) (& fields->f_user)); 345 break; 346 347 default : 348 /* xgettext:c-format */ 349 fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex); 350 abort (); 351 } 352 353 return errmsg; 354 } 355 356 cgen_parse_fn * const lm32_cgen_parse_handlers[] = 357 { 358 parse_insn_normal, 359 }; 360 361 void 362 lm32_cgen_init_asm (CGEN_CPU_DESC cd) 363 { 364 lm32_cgen_init_opcode_table (cd); 365 lm32_cgen_init_ibld_table (cd); 366 cd->parse_handlers = & lm32_cgen_parse_handlers[0]; 367 cd->parse_operand = lm32_cgen_parse_operand; 368 #ifdef CGEN_ASM_INIT_HOOK 369 CGEN_ASM_INIT_HOOK 370 #endif 371 } 372 373 374 376 /* Regex construction routine. 377 378 This translates an opcode syntax string into a regex string, 379 by replacing any non-character syntax element (such as an 380 opcode) with the pattern '.*' 381 382 It then compiles the regex and stores it in the opcode, for 383 later use by lm32_cgen_assemble_insn 384 385 Returns NULL for success, an error message for failure. */ 386 387 char * 388 lm32_cgen_build_insn_regex (CGEN_INSN *insn) 389 { 390 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); 391 const char *mnem = CGEN_INSN_MNEMONIC (insn); 392 char rxbuf[CGEN_MAX_RX_ELEMENTS]; 393 char *rx = rxbuf; 394 const CGEN_SYNTAX_CHAR_TYPE *syn; 395 int reg_err; 396 397 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); 398 399 /* Mnemonics come first in the syntax string. */ 400 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 401 return _("missing mnemonic in syntax string"); 402 ++syn; 403 404 /* Generate a case sensitive regular expression that emulates case 405 insensitive matching in the "C" locale. We cannot generate a case 406 insensitive regular expression because in Turkish locales, 'i' and 'I' 407 are not equal modulo case conversion. */ 408 409 /* Copy the literal mnemonic out of the insn. */ 410 for (; *mnem; mnem++) 411 { 412 char c = *mnem; 413 414 if (ISALPHA (c)) 415 { 416 *rx++ = '['; 417 *rx++ = TOLOWER (c); 418 *rx++ = TOUPPER (c); 419 *rx++ = ']'; 420 } 421 else 422 *rx++ = c; 423 } 424 425 /* Copy any remaining literals from the syntax string into the rx. */ 426 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) 427 { 428 if (CGEN_SYNTAX_CHAR_P (* syn)) 429 { 430 char c = CGEN_SYNTAX_CHAR (* syn); 431 432 switch (c) 433 { 434 /* Escape any regex metacharacters in the syntax. */ 435 case '.': case '[': case '\\': 436 case '*': case '^': case '$': 437 438 #ifdef CGEN_ESCAPE_EXTENDED_REGEX 439 case '?': case '{': case '}': 440 case '(': case ')': case '*': 441 case '|': case '+': case ']': 442 #endif 443 *rx++ = '\\'; 444 *rx++ = c; 445 break; 446 447 default: 448 if (ISALPHA (c)) 449 { 450 *rx++ = '['; 451 *rx++ = TOLOWER (c); 452 *rx++ = TOUPPER (c); 453 *rx++ = ']'; 454 } 455 else 456 *rx++ = c; 457 break; 458 } 459 } 460 else 461 { 462 /* Replace non-syntax fields with globs. */ 463 *rx++ = '.'; 464 *rx++ = '*'; 465 } 466 } 467 468 /* Trailing whitespace ok. */ 469 * rx++ = '['; 470 * rx++ = ' '; 471 * rx++ = '\t'; 472 * rx++ = ']'; 473 * rx++ = '*'; 474 475 /* But anchor it after that. */ 476 * rx++ = '$'; 477 * rx = '\0'; 478 479 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); 480 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); 481 482 if (reg_err == 0) 483 return NULL; 484 else 485 { 486 static char msg[80]; 487 488 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); 489 regfree ((regex_t *) CGEN_INSN_RX (insn)); 490 free (CGEN_INSN_RX (insn)); 491 (CGEN_INSN_RX (insn)) = NULL; 492 return msg; 493 } 494 } 495 496 497 /* Default insn parser. 499 500 The syntax string is scanned and operands are parsed and stored in FIELDS. 501 Relocs are queued as we go via other callbacks. 502 503 ??? Note that this is currently an all-or-nothing parser. If we fail to 504 parse the instruction, we return 0 and the caller will start over from 505 the beginning. Backtracking will be necessary in parsing subexpressions, 506 but that can be handled there. Not handling backtracking here may get 507 expensive in the case of the m68k. Deal with later. 508 509 Returns NULL for success, an error message for failure. */ 510 511 static const char * 512 parse_insn_normal (CGEN_CPU_DESC cd, 513 const CGEN_INSN *insn, 514 const char **strp, 515 CGEN_FIELDS *fields) 516 { 517 /* ??? Runtime added insns not handled yet. */ 518 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 519 const char *str = *strp; 520 const char *errmsg; 521 const char *p; 522 const CGEN_SYNTAX_CHAR_TYPE * syn; 523 #ifdef CGEN_MNEMONIC_OPERANDS 524 /* FIXME: wip */ 525 int past_opcode_p; 526 #endif 527 528 /* For now we assume the mnemonic is first (there are no leading operands). 529 We can parse it without needing to set up operand parsing. 530 GAS's input scrubber will ensure mnemonics are lowercase, but we may 531 not be called from GAS. */ 532 p = CGEN_INSN_MNEMONIC (insn); 533 while (*p && TOLOWER (*p) == TOLOWER (*str)) 534 ++p, ++str; 535 536 if (* p) 537 return _("unrecognized instruction"); 538 539 #ifndef CGEN_MNEMONIC_OPERANDS 540 if (* str && ! ISSPACE (* str)) 541 return _("unrecognized instruction"); 542 #endif 543 544 CGEN_INIT_PARSE (cd); 545 cgen_init_parse_operand (cd); 546 #ifdef CGEN_MNEMONIC_OPERANDS 547 past_opcode_p = 0; 548 #endif 549 550 /* We don't check for (*str != '\0') here because we want to parse 551 any trailing fake arguments in the syntax string. */ 552 syn = CGEN_SYNTAX_STRING (syntax); 553 554 /* Mnemonics come first for now, ensure valid string. */ 555 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 556 abort (); 557 558 ++syn; 559 560 while (* syn != 0) 561 { 562 /* Non operand chars must match exactly. */ 563 if (CGEN_SYNTAX_CHAR_P (* syn)) 564 { 565 /* FIXME: While we allow for non-GAS callers above, we assume the 566 first char after the mnemonic part is a space. */ 567 /* FIXME: We also take inappropriate advantage of the fact that 568 GAS's input scrubber will remove extraneous blanks. */ 569 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) 570 { 571 #ifdef CGEN_MNEMONIC_OPERANDS 572 if (CGEN_SYNTAX_CHAR(* syn) == ' ') 573 past_opcode_p = 1; 574 #endif 575 ++ syn; 576 ++ str; 577 } 578 else if (*str) 579 { 580 /* Syntax char didn't match. Can't be this insn. */ 581 static char msg [80]; 582 583 /* xgettext:c-format */ 584 sprintf (msg, _("syntax error (expected char `%c', found `%c')"), 585 CGEN_SYNTAX_CHAR(*syn), *str); 586 return msg; 587 } 588 else 589 { 590 /* Ran out of input. */ 591 static char msg [80]; 592 593 /* xgettext:c-format */ 594 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), 595 CGEN_SYNTAX_CHAR(*syn)); 596 return msg; 597 } 598 continue; 599 } 600 601 #ifdef CGEN_MNEMONIC_OPERANDS 602 (void) past_opcode_p; 603 #endif 604 /* We have an operand of some sort. */ 605 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields); 606 if (errmsg) 607 return errmsg; 608 609 /* Done with this operand, continue with next one. */ 610 ++ syn; 611 } 612 613 /* If we're at the end of the syntax string, we're done. */ 614 if (* syn == 0) 615 { 616 /* FIXME: For the moment we assume a valid `str' can only contain 617 blanks now. IE: We needn't try again with a longer version of 618 the insn and it is assumed that longer versions of insns appear 619 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ 620 while (ISSPACE (* str)) 621 ++ str; 622 623 if (* str != '\0') 624 return _("junk at end of line"); /* FIXME: would like to include `str' */ 625 626 return NULL; 627 } 628 629 /* We couldn't parse it. */ 630 return _("unrecognized instruction"); 631 } 632 633 /* Main entry point. 635 This routine is called for each instruction to be assembled. 636 STR points to the insn to be assembled. 637 We assume all necessary tables have been initialized. 638 The assembled instruction, less any fixups, is stored in BUF. 639 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value 640 still needs to be converted to target byte order, otherwise BUF is an array 641 of bytes in target byte order. 642 The result is a pointer to the insn's entry in the opcode table, 643 or NULL if an error occured (an error message will have already been 644 printed). 645 646 Note that when processing (non-alias) macro-insns, 647 this function recurses. 648 649 ??? It's possible to make this cpu-independent. 650 One would have to deal with a few minor things. 651 At this point in time doing so would be more of a curiosity than useful 652 [for example this file isn't _that_ big], but keeping the possibility in 653 mind helps keep the design clean. */ 654 655 const CGEN_INSN * 656 lm32_cgen_assemble_insn (CGEN_CPU_DESC cd, 657 const char *str, 658 CGEN_FIELDS *fields, 659 CGEN_INSN_BYTES_PTR buf, 660 char **errmsg) 661 { 662 const char *start; 663 CGEN_INSN_LIST *ilist; 664 const char *parse_errmsg = NULL; 665 const char *insert_errmsg = NULL; 666 int recognized_mnemonic = 0; 667 668 /* Skip leading white space. */ 669 while (ISSPACE (* str)) 670 ++ str; 671 672 /* The instructions are stored in hashed lists. 673 Get the first in the list. */ 674 ilist = CGEN_ASM_LOOKUP_INSN (cd, str); 675 676 /* Keep looking until we find a match. */ 677 start = str; 678 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) 679 { 680 const CGEN_INSN *insn = ilist->insn; 681 recognized_mnemonic = 1; 682 683 #ifdef CGEN_VALIDATE_INSN_SUPPORTED 684 /* Not usually needed as unsupported opcodes 685 shouldn't be in the hash lists. */ 686 /* Is this insn supported by the selected cpu? */ 687 if (! lm32_cgen_insn_supported (cd, insn)) 688 continue; 689 #endif 690 /* If the RELAXED attribute is set, this is an insn that shouldn't be 691 chosen immediately. Instead, it is used during assembler/linker 692 relaxation if possible. */ 693 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) 694 continue; 695 696 str = start; 697 698 /* Skip this insn if str doesn't look right lexically. */ 699 if (CGEN_INSN_RX (insn) != NULL && 700 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) 701 continue; 702 703 /* Allow parse/insert handlers to obtain length of insn. */ 704 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 705 706 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); 707 if (parse_errmsg != NULL) 708 continue; 709 710 /* ??? 0 is passed for `pc'. */ 711 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, 712 (bfd_vma) 0); 713 if (insert_errmsg != NULL) 714 continue; 715 716 /* It is up to the caller to actually output the insn and any 717 queued relocs. */ 718 return insn; 719 } 720 721 { 722 static char errbuf[150]; 723 const char *tmp_errmsg; 724 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS 725 #define be_verbose 1 726 #else 727 #define be_verbose 0 728 #endif 729 730 if (be_verbose) 731 { 732 /* If requesting verbose error messages, use insert_errmsg. 733 Failing that, use parse_errmsg. */ 734 tmp_errmsg = (insert_errmsg ? insert_errmsg : 735 parse_errmsg ? parse_errmsg : 736 recognized_mnemonic ? 737 _("unrecognized form of instruction") : 738 _("unrecognized instruction")); 739 740 if (strlen (start) > 50) 741 /* xgettext:c-format */ 742 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); 743 else 744 /* xgettext:c-format */ 745 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); 746 } 747 else 748 { 749 if (strlen (start) > 50) 750 /* xgettext:c-format */ 751 sprintf (errbuf, _("bad instruction `%.50s...'"), start); 752 else 753 /* xgettext:c-format */ 754 sprintf (errbuf, _("bad instruction `%.50s'"), start); 755 } 756 757 *errmsg = errbuf; 758 return NULL; 759 } 760 } 761
