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 "xstormy16-desc.h" 36 #include "xstormy16-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 54 /* The machine-independent code doesn't know how to disambiguate 55 mov (foo),r3 56 and 57 mov (r2),r3 58 where 'foo' is a label. This helps it out. */ 59 60 static const char * 61 parse_mem8 (CGEN_CPU_DESC cd, 62 const char **strp, 63 int opindex, 64 unsigned long *valuep) 65 { 66 if (**strp == '(') 67 { 68 const char *s = *strp; 69 70 if (s[1] == '-' && s[2] == '-') 71 return _("Bad register in preincrement"); 72 73 while (ISALNUM (*++s)) 74 ; 75 if (s[0] == '+' && s[1] == '+' && (s[2] == ')' || s[2] == ',')) 76 return _("Bad register in postincrement"); 77 if (s[0] == ',' || s[0] == ')') 78 return _("Bad register name"); 79 } 80 else if (cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, 81 (long *) valuep) == NULL) 82 return _("Label conflicts with register name"); 83 else if (strncasecmp (*strp, "rx,", 3) == 0 84 || strncasecmp (*strp, "rxl,", 3) == 0 85 || strncasecmp (*strp, "rxh,", 3) == 0) 86 return _("Label conflicts with `Rx'"); 87 else if (**strp == '#') 88 return _("Bad immediate expression"); 89 90 return cgen_parse_unsigned_integer (cd, strp, opindex, valuep); 91 } 92 93 /* For the add and subtract instructions, there are two immediate forms, 94 one for small operands and one for large ones. We want to use 95 the small one when possible, but we do not want to generate relocs 96 of the small size. This is somewhat tricky. */ 97 98 static const char * 99 parse_small_immediate (CGEN_CPU_DESC cd, 100 const char **strp, 101 int opindex, 102 unsigned long *valuep) 103 { 104 bfd_vma value; 105 enum cgen_parse_operand_result result; 106 const char *errmsg; 107 108 if (**strp == '@') 109 return _("No relocation for small immediate"); 110 111 errmsg = (* cd->parse_operand_fn) 112 (cd, CGEN_PARSE_OPERAND_INTEGER, strp, opindex, BFD_RELOC_NONE, 113 & result, & value); 114 115 if (errmsg) 116 return errmsg; 117 118 if (result != CGEN_PARSE_OPERAND_RESULT_NUMBER) 119 return _("Small operand was not an immediate number"); 120 121 *valuep = value; 122 return NULL; 123 } 124 125 /* Literal scan be either a normal literal, a @hi() or @lo relocation. */ 126 127 static const char * 128 parse_immediate16 (CGEN_CPU_DESC cd, 129 const char **strp, 130 int opindex, 131 unsigned long *valuep) 132 { 133 const char *errmsg; 134 enum cgen_parse_operand_result result; 135 bfd_reloc_code_real_type code = BFD_RELOC_NONE; 136 bfd_vma value; 137 138 if (strncmp (*strp, "@hi(", 4) == 0) 139 { 140 *strp += 4; 141 code = BFD_RELOC_HI16; 142 } 143 else 144 if (strncmp (*strp, "@lo(", 4) == 0) 145 { 146 *strp += 4; 147 code = BFD_RELOC_LO16; 148 } 149 150 if (code == BFD_RELOC_NONE) 151 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); 152 else 153 { 154 errmsg = cgen_parse_address (cd, strp, opindex, code, &result, &value); 155 if ((errmsg == NULL) && 156 (result != CGEN_PARSE_OPERAND_RESULT_QUEUED)) 157 errmsg = _("Operand is not a symbol"); 158 159 *valuep = value; 160 if ((code == BFD_RELOC_HI16 || code == BFD_RELOC_LO16) 161 && **strp == ')') 162 *strp += 1; 163 else 164 { 165 errmsg = _("Syntax error: No trailing ')'"); 166 return errmsg; 167 } 168 } 169 return errmsg; 170 } 171 /* -- */ 172 173 const char * xstormy16_cgen_parse_operand 174 (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *); 175 176 /* Main entry point for operand parsing. 177 178 This function is basically just a big switch statement. Earlier versions 179 used tables to look up the function to use, but 180 - if the table contains both assembler and disassembler functions then 181 the disassembler contains much of the assembler and vice-versa, 182 - there's a lot of inlining possibilities as things grow, 183 - using a switch statement avoids the function call overhead. 184 185 This function could be moved into `parse_insn_normal', but keeping it 186 separate makes clear the interface between `parse_insn_normal' and each of 187 the handlers. */ 188 189 const char * 190 xstormy16_cgen_parse_operand (CGEN_CPU_DESC cd, 191 int opindex, 192 const char ** strp, 193 CGEN_FIELDS * fields) 194 { 195 const char * errmsg = NULL; 196 /* Used by scalar operands that still need to be parsed. */ 197 long junk ATTRIBUTE_UNUSED; 198 199 switch (opindex) 200 { 201 case XSTORMY16_OPERAND_RB : 202 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_Rb_names, & fields->f_Rb); 203 break; 204 case XSTORMY16_OPERAND_RBJ : 205 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_Rb_names, & fields->f_Rbj); 206 break; 207 case XSTORMY16_OPERAND_RD : 208 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rd); 209 break; 210 case XSTORMY16_OPERAND_RDM : 211 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rdm); 212 break; 213 case XSTORMY16_OPERAND_RM : 214 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rm); 215 break; 216 case XSTORMY16_OPERAND_RS : 217 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rs); 218 break; 219 case XSTORMY16_OPERAND_ABS24 : 220 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_ABS24, (unsigned long *) (& fields->f_abs24)); 221 break; 222 case XSTORMY16_OPERAND_BCOND2 : 223 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_h_branchcond, & fields->f_op2); 224 break; 225 case XSTORMY16_OPERAND_BCOND5 : 226 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_h_branchcond, & fields->f_op5); 227 break; 228 case XSTORMY16_OPERAND_HMEM8 : 229 errmsg = parse_mem8 (cd, strp, XSTORMY16_OPERAND_HMEM8, (unsigned long *) (& fields->f_hmem8)); 230 break; 231 case XSTORMY16_OPERAND_IMM12 : 232 errmsg = cgen_parse_signed_integer (cd, strp, XSTORMY16_OPERAND_IMM12, (long *) (& fields->f_imm12)); 233 break; 234 case XSTORMY16_OPERAND_IMM16 : 235 errmsg = parse_immediate16 (cd, strp, XSTORMY16_OPERAND_IMM16, (unsigned long *) (& fields->f_imm16)); 236 break; 237 case XSTORMY16_OPERAND_IMM2 : 238 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM2, (unsigned long *) (& fields->f_imm2)); 239 break; 240 case XSTORMY16_OPERAND_IMM3 : 241 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM3, (unsigned long *) (& fields->f_imm3)); 242 break; 243 case XSTORMY16_OPERAND_IMM3B : 244 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM3B, (unsigned long *) (& fields->f_imm3b)); 245 break; 246 case XSTORMY16_OPERAND_IMM4 : 247 errmsg = parse_small_immediate (cd, strp, XSTORMY16_OPERAND_IMM4, (unsigned long *) (& fields->f_imm4)); 248 break; 249 case XSTORMY16_OPERAND_IMM8 : 250 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM8, (unsigned long *) (& fields->f_imm8)); 251 break; 252 case XSTORMY16_OPERAND_IMM8SMALL : 253 errmsg = parse_small_immediate (cd, strp, XSTORMY16_OPERAND_IMM8SMALL, (unsigned long *) (& fields->f_imm8)); 254 break; 255 case XSTORMY16_OPERAND_LMEM8 : 256 errmsg = parse_mem8 (cd, strp, XSTORMY16_OPERAND_LMEM8, (unsigned long *) (& fields->f_lmem8)); 257 break; 258 case XSTORMY16_OPERAND_REL12 : 259 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL12, (unsigned long *) (& fields->f_rel12)); 260 break; 261 case XSTORMY16_OPERAND_REL12A : 262 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL12A, (unsigned long *) (& fields->f_rel12a)); 263 break; 264 case XSTORMY16_OPERAND_REL8_2 : 265 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL8_2, (unsigned long *) (& fields->f_rel8_2)); 266 break; 267 case XSTORMY16_OPERAND_REL8_4 : 268 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL8_4, (unsigned long *) (& fields->f_rel8_4)); 269 break; 270 case XSTORMY16_OPERAND_WS2 : 271 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_h_wordsize, & fields->f_op2m); 272 break; 273 274 default : 275 /* xgettext:c-format */ 276 fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex); 277 abort (); 278 } 279 280 return errmsg; 281 } 282 283 cgen_parse_fn * const xstormy16_cgen_parse_handlers[] = 284 { 285 parse_insn_normal, 286 }; 287 288 void 289 xstormy16_cgen_init_asm (CGEN_CPU_DESC cd) 290 { 291 xstormy16_cgen_init_opcode_table (cd); 292 xstormy16_cgen_init_ibld_table (cd); 293 cd->parse_handlers = & xstormy16_cgen_parse_handlers[0]; 294 cd->parse_operand = xstormy16_cgen_parse_operand; 295 #ifdef CGEN_ASM_INIT_HOOK 296 CGEN_ASM_INIT_HOOK 297 #endif 298 } 299 300 301 302 /* Regex construction routine. 303 304 This translates an opcode syntax string into a regex string, 305 by replacing any non-character syntax element (such as an 306 opcode) with the pattern '.*' 307 308 It then compiles the regex and stores it in the opcode, for 309 later use by xstormy16_cgen_assemble_insn 310 311 Returns NULL for success, an error message for failure. */ 312 313 char * 314 xstormy16_cgen_build_insn_regex (CGEN_INSN *insn) 315 { 316 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); 317 const char *mnem = CGEN_INSN_MNEMONIC (insn); 318 char rxbuf[CGEN_MAX_RX_ELEMENTS]; 319 char *rx = rxbuf; 320 const CGEN_SYNTAX_CHAR_TYPE *syn; 321 int reg_err; 322 323 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); 324 325 /* Mnemonics come first in the syntax string. */ 326 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 327 return _("missing mnemonic in syntax string"); 328 ++syn; 329 330 /* Generate a case sensitive regular expression that emulates case 331 insensitive matching in the "C" locale. We cannot generate a case 332 insensitive regular expression because in Turkish locales, 'i' and 'I' 333 are not equal modulo case conversion. */ 334 335 /* Copy the literal mnemonic out of the insn. */ 336 for (; *mnem; mnem++) 337 { 338 char c = *mnem; 339 340 if (ISALPHA (c)) 341 { 342 *rx++ = '['; 343 *rx++ = TOLOWER (c); 344 *rx++ = TOUPPER (c); 345 *rx++ = ']'; 346 } 347 else 348 *rx++ = c; 349 } 350 351 /* Copy any remaining literals from the syntax string into the rx. */ 352 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) 353 { 354 if (CGEN_SYNTAX_CHAR_P (* syn)) 355 { 356 char c = CGEN_SYNTAX_CHAR (* syn); 357 358 switch (c) 359 { 360 /* Escape any regex metacharacters in the syntax. */ 361 case '.': case '[': case '\\': 362 case '*': case '^': case '$': 363 364 #ifdef CGEN_ESCAPE_EXTENDED_REGEX 365 case '?': case '{': case '}': 366 case '(': case ')': case '*': 367 case '|': case '+': case ']': 368 #endif 369 *rx++ = '\\'; 370 *rx++ = c; 371 break; 372 373 default: 374 if (ISALPHA (c)) 375 { 376 *rx++ = '['; 377 *rx++ = TOLOWER (c); 378 *rx++ = TOUPPER (c); 379 *rx++ = ']'; 380 } 381 else 382 *rx++ = c; 383 break; 384 } 385 } 386 else 387 { 388 /* Replace non-syntax fields with globs. */ 389 *rx++ = '.'; 390 *rx++ = '*'; 391 } 392 } 393 394 /* Trailing whitespace ok. */ 395 * rx++ = '['; 396 * rx++ = ' '; 397 * rx++ = '\t'; 398 * rx++ = ']'; 399 * rx++ = '*'; 400 401 /* But anchor it after that. */ 402 * rx++ = '$'; 403 * rx = '\0'; 404 405 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); 406 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); 407 408 if (reg_err == 0) 409 return NULL; 410 else 411 { 412 static char msg[80]; 413 414 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); 415 regfree ((regex_t *) CGEN_INSN_RX (insn)); 416 free (CGEN_INSN_RX (insn)); 417 (CGEN_INSN_RX (insn)) = NULL; 418 return msg; 419 } 420 } 421 422 423 /* Default insn parser. 424 425 The syntax string is scanned and operands are parsed and stored in FIELDS. 426 Relocs are queued as we go via other callbacks. 427 428 ??? Note that this is currently an all-or-nothing parser. If we fail to 429 parse the instruction, we return 0 and the caller will start over from 430 the beginning. Backtracking will be necessary in parsing subexpressions, 431 but that can be handled there. Not handling backtracking here may get 432 expensive in the case of the m68k. Deal with later. 433 434 Returns NULL for success, an error message for failure. */ 435 436 static const char * 437 parse_insn_normal (CGEN_CPU_DESC cd, 438 const CGEN_INSN *insn, 439 const char **strp, 440 CGEN_FIELDS *fields) 441 { 442 /* ??? Runtime added insns not handled yet. */ 443 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 444 const char *str = *strp; 445 const char *errmsg; 446 const char *p; 447 const CGEN_SYNTAX_CHAR_TYPE * syn; 448 #ifdef CGEN_MNEMONIC_OPERANDS 449 /* FIXME: wip */ 450 int past_opcode_p; 451 #endif 452 453 /* For now we assume the mnemonic is first (there are no leading operands). 454 We can parse it without needing to set up operand parsing. 455 GAS's input scrubber will ensure mnemonics are lowercase, but we may 456 not be called from GAS. */ 457 p = CGEN_INSN_MNEMONIC (insn); 458 while (*p && TOLOWER (*p) == TOLOWER (*str)) 459 ++p, ++str; 460 461 if (* p) 462 return _("unrecognized instruction"); 463 464 #ifndef CGEN_MNEMONIC_OPERANDS 465 if (* str && ! ISSPACE (* str)) 466 return _("unrecognized instruction"); 467 #endif 468 469 CGEN_INIT_PARSE (cd); 470 cgen_init_parse_operand (cd); 471 #ifdef CGEN_MNEMONIC_OPERANDS 472 past_opcode_p = 0; 473 #endif 474 475 /* We don't check for (*str != '\0') here because we want to parse 476 any trailing fake arguments in the syntax string. */ 477 syn = CGEN_SYNTAX_STRING (syntax); 478 479 /* Mnemonics come first for now, ensure valid string. */ 480 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 481 abort (); 482 483 ++syn; 484 485 while (* syn != 0) 486 { 487 /* Non operand chars must match exactly. */ 488 if (CGEN_SYNTAX_CHAR_P (* syn)) 489 { 490 /* FIXME: While we allow for non-GAS callers above, we assume the 491 first char after the mnemonic part is a space. */ 492 /* FIXME: We also take inappropriate advantage of the fact that 493 GAS's input scrubber will remove extraneous blanks. */ 494 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) 495 { 496 #ifdef CGEN_MNEMONIC_OPERANDS 497 if (CGEN_SYNTAX_CHAR(* syn) == ' ') 498 past_opcode_p = 1; 499 #endif 500 ++ syn; 501 ++ str; 502 } 503 else if (*str) 504 { 505 /* Syntax char didn't match. Can't be this insn. */ 506 static char msg [80]; 507 508 /* xgettext:c-format */ 509 sprintf (msg, _("syntax error (expected char `%c', found `%c')"), 510 CGEN_SYNTAX_CHAR(*syn), *str); 511 return msg; 512 } 513 else 514 { 515 /* Ran out of input. */ 516 static char msg [80]; 517 518 /* xgettext:c-format */ 519 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), 520 CGEN_SYNTAX_CHAR(*syn)); 521 return msg; 522 } 523 continue; 524 } 525 526 /* We have an operand of some sort. */ 527 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), 528 &str, fields); 529 if (errmsg) 530 return errmsg; 531 532 /* Done with this operand, continue with next one. */ 533 ++ syn; 534 } 535 536 /* If we're at the end of the syntax string, we're done. */ 537 if (* syn == 0) 538 { 539 /* FIXME: For the moment we assume a valid `str' can only contain 540 blanks now. IE: We needn't try again with a longer version of 541 the insn and it is assumed that longer versions of insns appear 542 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ 543 while (ISSPACE (* str)) 544 ++ str; 545 546 if (* str != '\0') 547 return _("junk at end of line"); /* FIXME: would like to include `str' */ 548 549 return NULL; 550 } 551 552 /* We couldn't parse it. */ 553 return _("unrecognized instruction"); 554 } 555 556 /* Main entry point. 557 This routine is called for each instruction to be assembled. 558 STR points to the insn to be assembled. 559 We assume all necessary tables have been initialized. 560 The assembled instruction, less any fixups, is stored in BUF. 561 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value 562 still needs to be converted to target byte order, otherwise BUF is an array 563 of bytes in target byte order. 564 The result is a pointer to the insn's entry in the opcode table, 565 or NULL if an error occured (an error message will have already been 566 printed). 567 568 Note that when processing (non-alias) macro-insns, 569 this function recurses. 570 571 ??? It's possible to make this cpu-independent. 572 One would have to deal with a few minor things. 573 At this point in time doing so would be more of a curiosity than useful 574 [for example this file isn't _that_ big], but keeping the possibility in 575 mind helps keep the design clean. */ 576 577 const CGEN_INSN * 578 xstormy16_cgen_assemble_insn (CGEN_CPU_DESC cd, 579 const char *str, 580 CGEN_FIELDS *fields, 581 CGEN_INSN_BYTES_PTR buf, 582 char **errmsg) 583 { 584 const char *start; 585 CGEN_INSN_LIST *ilist; 586 const char *parse_errmsg = NULL; 587 const char *insert_errmsg = NULL; 588 int recognized_mnemonic = 0; 589 590 /* Skip leading white space. */ 591 while (ISSPACE (* str)) 592 ++ str; 593 594 /* The instructions are stored in hashed lists. 595 Get the first in the list. */ 596 ilist = CGEN_ASM_LOOKUP_INSN (cd, str); 597 598 /* Keep looking until we find a match. */ 599 start = str; 600 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) 601 { 602 const CGEN_INSN *insn = ilist->insn; 603 recognized_mnemonic = 1; 604 605 #ifdef CGEN_VALIDATE_INSN_SUPPORTED 606 /* Not usually needed as unsupported opcodes 607 shouldn't be in the hash lists. */ 608 /* Is this insn supported by the selected cpu? */ 609 if (! xstormy16_cgen_insn_supported (cd, insn)) 610 continue; 611 #endif 612 /* If the RELAXED attribute is set, this is an insn that shouldn't be 613 chosen immediately. Instead, it is used during assembler/linker 614 relaxation if possible. */ 615 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) 616 continue; 617 618 str = start; 619 620 /* Skip this insn if str doesn't look right lexically. */ 621 if (CGEN_INSN_RX (insn) != NULL && 622 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) 623 continue; 624 625 /* Allow parse/insert handlers to obtain length of insn. */ 626 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 627 628 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); 629 if (parse_errmsg != NULL) 630 continue; 631 632 /* ??? 0 is passed for `pc'. */ 633 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, 634 (bfd_vma) 0); 635 if (insert_errmsg != NULL) 636 continue; 637 638 /* It is up to the caller to actually output the insn and any 639 queued relocs. */ 640 return insn; 641 } 642 643 { 644 static char errbuf[150]; 645 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS 646 const char *tmp_errmsg; 647 648 /* If requesting verbose error messages, use insert_errmsg. 649 Failing that, use parse_errmsg. */ 650 tmp_errmsg = (insert_errmsg ? insert_errmsg : 651 parse_errmsg ? parse_errmsg : 652 recognized_mnemonic ? 653 _("unrecognized form of instruction") : 654 _("unrecognized instruction")); 655 656 if (strlen (start) > 50) 657 /* xgettext:c-format */ 658 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); 659 else 660 /* xgettext:c-format */ 661 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); 662 #else 663 if (strlen (start) > 50) 664 /* xgettext:c-format */ 665 sprintf (errbuf, _("bad instruction `%.50s...'"), start); 666 else 667 /* xgettext:c-format */ 668 sprintf (errbuf, _("bad instruction `%.50s'"), start); 669 #endif 670 671 *errmsg = errbuf; 672 return NULL; 673 } 674 } 675