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 "xstormy16-desc.h" 35 #include "xstormy16-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 /* 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 } 299 300 301 303 /* Regex construction routine. 304 305 This translates an opcode syntax string into a regex string, 306 by replacing any non-character syntax element (such as an 307 opcode) with the pattern '.*' 308 309 It then compiles the regex and stores it in the opcode, for 310 later use by xstormy16_cgen_assemble_insn 311 312 Returns NULL for success, an error message for failure. */ 313 314 char * 315 xstormy16_cgen_build_insn_regex (CGEN_INSN *insn) 316 { 317 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); 318 const char *mnem = CGEN_INSN_MNEMONIC (insn); 319 char rxbuf[CGEN_MAX_RX_ELEMENTS]; 320 char *rx = rxbuf; 321 const CGEN_SYNTAX_CHAR_TYPE *syn; 322 int reg_err; 323 324 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); 325 326 /* Mnemonics come first in the syntax string. */ 327 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 328 return _("missing mnemonic in syntax string"); 329 ++syn; 330 331 /* Generate a case sensitive regular expression that emulates case 332 insensitive matching in the "C" locale. We cannot generate a case 333 insensitive regular expression because in Turkish locales, 'i' and 'I' 334 are not equal modulo case conversion. */ 335 336 /* Copy the literal mnemonic out of the insn. */ 337 for (; *mnem; mnem++) 338 { 339 char c = *mnem; 340 341 if (ISALPHA (c)) 342 { 343 *rx++ = '['; 344 *rx++ = TOLOWER (c); 345 *rx++ = TOUPPER (c); 346 *rx++ = ']'; 347 } 348 else 349 *rx++ = c; 350 } 351 352 /* Copy any remaining literals from the syntax string into the rx. */ 353 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) 354 { 355 if (CGEN_SYNTAX_CHAR_P (* syn)) 356 { 357 char c = CGEN_SYNTAX_CHAR (* syn); 358 359 switch (c) 360 { 361 /* Escape any regex metacharacters in the syntax. */ 362 case '.': case '[': case '\\': 363 case '*': case '^': case '$': 364 365 #ifdef CGEN_ESCAPE_EXTENDED_REGEX 366 case '?': case '{': case '}': 367 case '(': case ')': case '*': 368 case '|': case '+': case ']': 369 #endif 370 *rx++ = '\\'; 371 *rx++ = c; 372 break; 373 374 default: 375 if (ISALPHA (c)) 376 { 377 *rx++ = '['; 378 *rx++ = TOLOWER (c); 379 *rx++ = TOUPPER (c); 380 *rx++ = ']'; 381 } 382 else 383 *rx++ = c; 384 break; 385 } 386 } 387 else 388 { 389 /* Replace non-syntax fields with globs. */ 390 *rx++ = '.'; 391 *rx++ = '*'; 392 } 393 } 394 395 /* Trailing whitespace ok. */ 396 * rx++ = '['; 397 * rx++ = ' '; 398 * rx++ = '\t'; 399 * rx++ = ']'; 400 * rx++ = '*'; 401 402 /* But anchor it after that. */ 403 * rx++ = '$'; 404 * rx = '\0'; 405 406 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); 407 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); 408 409 if (reg_err == 0) 410 return NULL; 411 else 412 { 413 static char msg[80]; 414 415 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); 416 regfree ((regex_t *) CGEN_INSN_RX (insn)); 417 free (CGEN_INSN_RX (insn)); 418 (CGEN_INSN_RX (insn)) = NULL; 419 return msg; 420 } 421 } 422 423 424 /* Default insn parser. 426 427 The syntax string is scanned and operands are parsed and stored in FIELDS. 428 Relocs are queued as we go via other callbacks. 429 430 ??? Note that this is currently an all-or-nothing parser. If we fail to 431 parse the instruction, we return 0 and the caller will start over from 432 the beginning. Backtracking will be necessary in parsing subexpressions, 433 but that can be handled there. Not handling backtracking here may get 434 expensive in the case of the m68k. Deal with later. 435 436 Returns NULL for success, an error message for failure. */ 437 438 static const char * 439 parse_insn_normal (CGEN_CPU_DESC cd, 440 const CGEN_INSN *insn, 441 const char **strp, 442 CGEN_FIELDS *fields) 443 { 444 /* ??? Runtime added insns not handled yet. */ 445 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 446 const char *str = *strp; 447 const char *errmsg; 448 const char *p; 449 const CGEN_SYNTAX_CHAR_TYPE * syn; 450 #ifdef CGEN_MNEMONIC_OPERANDS 451 /* FIXME: wip */ 452 int past_opcode_p; 453 #endif 454 455 /* For now we assume the mnemonic is first (there are no leading operands). 456 We can parse it without needing to set up operand parsing. 457 GAS's input scrubber will ensure mnemonics are lowercase, but we may 458 not be called from GAS. */ 459 p = CGEN_INSN_MNEMONIC (insn); 460 while (*p && TOLOWER (*p) == TOLOWER (*str)) 461 ++p, ++str; 462 463 if (* p) 464 return _("unrecognized instruction"); 465 466 #ifndef CGEN_MNEMONIC_OPERANDS 467 if (* str && ! ISSPACE (* str)) 468 return _("unrecognized instruction"); 469 #endif 470 471 CGEN_INIT_PARSE (cd); 472 cgen_init_parse_operand (cd); 473 #ifdef CGEN_MNEMONIC_OPERANDS 474 past_opcode_p = 0; 475 #endif 476 477 /* We don't check for (*str != '\0') here because we want to parse 478 any trailing fake arguments in the syntax string. */ 479 syn = CGEN_SYNTAX_STRING (syntax); 480 481 /* Mnemonics come first for now, ensure valid string. */ 482 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 483 abort (); 484 485 ++syn; 486 487 while (* syn != 0) 488 { 489 /* Non operand chars must match exactly. */ 490 if (CGEN_SYNTAX_CHAR_P (* syn)) 491 { 492 /* FIXME: While we allow for non-GAS callers above, we assume the 493 first char after the mnemonic part is a space. */ 494 /* FIXME: We also take inappropriate advantage of the fact that 495 GAS's input scrubber will remove extraneous blanks. */ 496 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) 497 { 498 #ifdef CGEN_MNEMONIC_OPERANDS 499 if (CGEN_SYNTAX_CHAR(* syn) == ' ') 500 past_opcode_p = 1; 501 #endif 502 ++ syn; 503 ++ str; 504 } 505 else if (*str) 506 { 507 /* Syntax char didn't match. Can't be this insn. */ 508 static char msg [80]; 509 510 /* xgettext:c-format */ 511 sprintf (msg, _("syntax error (expected char `%c', found `%c')"), 512 CGEN_SYNTAX_CHAR(*syn), *str); 513 return msg; 514 } 515 else 516 { 517 /* Ran out of input. */ 518 static char msg [80]; 519 520 /* xgettext:c-format */ 521 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), 522 CGEN_SYNTAX_CHAR(*syn)); 523 return msg; 524 } 525 continue; 526 } 527 528 #ifdef CGEN_MNEMONIC_OPERANDS 529 (void) past_opcode_p; 530 #endif 531 /* We have an operand of some sort. */ 532 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields); 533 if (errmsg) 534 return errmsg; 535 536 /* Done with this operand, continue with next one. */ 537 ++ syn; 538 } 539 540 /* If we're at the end of the syntax string, we're done. */ 541 if (* syn == 0) 542 { 543 /* FIXME: For the moment we assume a valid `str' can only contain 544 blanks now. IE: We needn't try again with a longer version of 545 the insn and it is assumed that longer versions of insns appear 546 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ 547 while (ISSPACE (* str)) 548 ++ str; 549 550 if (* str != '\0') 551 return _("junk at end of line"); /* FIXME: would like to include `str' */ 552 553 return NULL; 554 } 555 556 /* We couldn't parse it. */ 557 return _("unrecognized instruction"); 558 } 559 560 /* Main entry point. 562 This routine is called for each instruction to be assembled. 563 STR points to the insn to be assembled. 564 We assume all necessary tables have been initialized. 565 The assembled instruction, less any fixups, is stored in BUF. 566 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value 567 still needs to be converted to target byte order, otherwise BUF is an array 568 of bytes in target byte order. 569 The result is a pointer to the insn's entry in the opcode table, 570 or NULL if an error occured (an error message will have already been 571 printed). 572 573 Note that when processing (non-alias) macro-insns, 574 this function recurses. 575 576 ??? It's possible to make this cpu-independent. 577 One would have to deal with a few minor things. 578 At this point in time doing so would be more of a curiosity than useful 579 [for example this file isn't _that_ big], but keeping the possibility in 580 mind helps keep the design clean. */ 581 582 const CGEN_INSN * 583 xstormy16_cgen_assemble_insn (CGEN_CPU_DESC cd, 584 const char *str, 585 CGEN_FIELDS *fields, 586 CGEN_INSN_BYTES_PTR buf, 587 char **errmsg) 588 { 589 const char *start; 590 CGEN_INSN_LIST *ilist; 591 const char *parse_errmsg = NULL; 592 const char *insert_errmsg = NULL; 593 int recognized_mnemonic = 0; 594 595 /* Skip leading white space. */ 596 while (ISSPACE (* str)) 597 ++ str; 598 599 /* The instructions are stored in hashed lists. 600 Get the first in the list. */ 601 ilist = CGEN_ASM_LOOKUP_INSN (cd, str); 602 603 /* Keep looking until we find a match. */ 604 start = str; 605 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) 606 { 607 const CGEN_INSN *insn = ilist->insn; 608 recognized_mnemonic = 1; 609 610 #ifdef CGEN_VALIDATE_INSN_SUPPORTED 611 /* Not usually needed as unsupported opcodes 612 shouldn't be in the hash lists. */ 613 /* Is this insn supported by the selected cpu? */ 614 if (! xstormy16_cgen_insn_supported (cd, insn)) 615 continue; 616 #endif 617 /* If the RELAXED attribute is set, this is an insn that shouldn't be 618 chosen immediately. Instead, it is used during assembler/linker 619 relaxation if possible. */ 620 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) 621 continue; 622 623 str = start; 624 625 /* Skip this insn if str doesn't look right lexically. */ 626 if (CGEN_INSN_RX (insn) != NULL && 627 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) 628 continue; 629 630 /* Allow parse/insert handlers to obtain length of insn. */ 631 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 632 633 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); 634 if (parse_errmsg != NULL) 635 continue; 636 637 /* ??? 0 is passed for `pc'. */ 638 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, 639 (bfd_vma) 0); 640 if (insert_errmsg != NULL) 641 continue; 642 643 /* It is up to the caller to actually output the insn and any 644 queued relocs. */ 645 return insn; 646 } 647 648 { 649 static char errbuf[150]; 650 const char *tmp_errmsg; 651 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS 652 #define be_verbose 1 653 #else 654 #define be_verbose 0 655 #endif 656 657 if (be_verbose) 658 { 659 /* If requesting verbose error messages, use insert_errmsg. 660 Failing that, use parse_errmsg. */ 661 tmp_errmsg = (insert_errmsg ? insert_errmsg : 662 parse_errmsg ? parse_errmsg : 663 recognized_mnemonic ? 664 _("unrecognized form of instruction") : 665 _("unrecognized instruction")); 666 667 if (strlen (start) > 50) 668 /* xgettext:c-format */ 669 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); 670 else 671 /* xgettext:c-format */ 672 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); 673 } 674 else 675 { 676 if (strlen (start) > 50) 677 /* xgettext:c-format */ 678 sprintf (errbuf, _("bad instruction `%.50s...'"), start); 679 else 680 /* xgettext:c-format */ 681 sprintf (errbuf, _("bad instruction `%.50s'"), start); 682 } 683 684 *errmsg = errbuf; 685 return NULL; 686 } 687 } 688
