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 Free Software Foundation, Inc. 8 9 This file is part of the GNU Binutils and GDB, the GNU debugger. 10 11 This program 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 2, or (at your option) 14 any later version. 15 16 This program is distributed in the hope that it will be useful, 17 but WITHOUT ANY WARRANTY; without even the implied warranty of 18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 GNU General Public 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 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 24 25 /* ??? Eventually more and more of this stuff can go to cpu-independent files. 26 Keep that in mind. */ 27 28 #include "sysdep.h" 29 #include <stdio.h> 30 #include "ansidecl.h" 31 #include "bfd.h" 32 #include "symcat.h" 33 #include "xstormy16-desc.h" 34 #include "xstormy16-opc.h" 35 #include "opintl.h" 36 #include "xregex.h" 37 #include "libiberty.h" 38 #include "safe-ctype.h" 39 40 #undef min 41 #define min(a,b) ((a) < (b) ? (a) : (b)) 42 #undef max 43 #define max(a,b) ((a) > (b) ? (a) : (b)) 44 45 static const char * parse_insn_normal 46 PARAMS ((CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *)); 47 48 /* -- assembler routines inserted here. */ 49 50 /* -- asm.c */ 51 static const char * parse_mem8 52 PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *)); 53 static const char * parse_small_immediate 54 PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *)); 55 static const char * parse_immediate16 56 PARAMS ((CGEN_CPU_DESC, const char **, int, unsigned long *)); 57 58 /* The machine-independent code doesn't know how to disambiguate 59 mov (foo),r3 60 and 61 mov (r2),r3 62 where 'foo' is a label. This helps it out. */ 63 64 static const char * 65 parse_mem8 (cd, strp, opindex, valuep) 66 CGEN_CPU_DESC cd; 67 const char **strp; 68 int opindex; 69 unsigned long *valuep; 70 { 71 if (**strp == '(') 72 { 73 const char *s = *strp; 74 75 if (s[1] == '-' && s[2] == '-') 76 return _("Bad register in preincrement"); 77 78 while (ISALNUM (*++s)) 79 ; 80 if (s[0] == '+' && s[1] == '+' && (s[2] == ')' || s[2] == ',')) 81 return _("Bad register in postincrement"); 82 if (s[0] == ',' || s[0] == ')') 83 return _("Bad register name"); 84 } 85 else if (cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, 86 valuep) == NULL) 87 return _("Label conflicts with register name"); 88 else if (strncasecmp (*strp, "rx,", 3) == 0 89 || strncasecmp (*strp, "rxl,", 3) == 0 90 || strncasecmp (*strp, "rxh,", 3) == 0) 91 return _("Label conflicts with `Rx'"); 92 else if (**strp == '#') 93 return _("Bad immediate expression"); 94 95 return cgen_parse_unsigned_integer (cd, strp, opindex, valuep); 96 } 97 98 /* For the add and subtract instructions, there are two immediate forms, 99 one for small operands and one for large ones. We want to use 100 the small one when possible, but we do not want to generate relocs 101 of the small size. This is somewhat tricky. */ 102 103 static const char * 104 parse_small_immediate (cd, strp, opindex, valuep) 105 CGEN_CPU_DESC cd; 106 const char **strp; 107 int opindex; 108 unsigned long *valuep; 109 { 110 bfd_vma value; 111 enum cgen_parse_operand_result result; 112 const char *errmsg; 113 114 if (**strp == '@') 115 return _("No relocation for small immediate"); 116 117 errmsg = (* cd->parse_operand_fn) 118 (cd, CGEN_PARSE_OPERAND_INTEGER, strp, opindex, BFD_RELOC_NONE, 119 &result, &value); 120 121 if (errmsg) 122 return errmsg; 123 124 if (result != CGEN_PARSE_OPERAND_RESULT_NUMBER) 125 return _("Small operand was not an immediate number"); 126 127 *valuep = value; 128 return NULL; 129 } 130 131 /* Literal scan be either a normal literal, a @hi() or @lo relocation. */ 132 133 static const char * 134 parse_immediate16 (cd, strp, opindex, valuep) 135 CGEN_CPU_DESC cd; 136 const char **strp; 137 int opindex; 138 unsigned long *valuep; 139 { 140 const char *errmsg; 141 enum cgen_parse_operand_result result; 142 bfd_reloc_code_real_type code = BFD_RELOC_NONE; 143 bfd_vma value; 144 145 if (strncmp (*strp, "@hi(", 4) == 0) 146 { 147 *strp += 4; 148 code = BFD_RELOC_HI16; 149 } 150 else 151 if (strncmp (*strp, "@lo(", 4) == 0) 152 { 153 *strp += 4; 154 code = BFD_RELOC_LO16; 155 } 156 157 if (code == BFD_RELOC_NONE) 158 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); 159 else 160 { 161 errmsg = cgen_parse_address (cd, strp, opindex, code, &result, &value); 162 if ((errmsg == NULL) && 163 (result != CGEN_PARSE_OPERAND_RESULT_QUEUED)) 164 errmsg = _("Operand is not a symbol"); 165 166 *valuep = value; 167 if ((code == BFD_RELOC_HI16 || code == BFD_RELOC_LO16) 168 && **strp == ')') 169 *strp += 1; 170 else 171 { 172 errmsg = _("Syntax error: No trailing ')'"); 173 return errmsg; 174 } 175 } 176 return errmsg; 177 } 178 /* -- */ 179 180 const char * xstormy16_cgen_parse_operand 181 PARAMS ((CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *)); 182 183 /* Main entry point for operand parsing. 184 185 This function is basically just a big switch statement. Earlier versions 186 used tables to look up the function to use, but 187 - if the table contains both assembler and disassembler functions then 188 the disassembler contains much of the assembler and vice-versa, 189 - there's a lot of inlining possibilities as things grow, 190 - using a switch statement avoids the function call overhead. 191 192 This function could be moved into `parse_insn_normal', but keeping it 193 separate makes clear the interface between `parse_insn_normal' and each of 194 the handlers. */ 195 196 const char * 197 xstormy16_cgen_parse_operand (cd, opindex, strp, fields) 198 CGEN_CPU_DESC cd; 199 int opindex; 200 const char ** strp; 201 CGEN_FIELDS * fields; 202 { 203 const char * errmsg = NULL; 204 /* Used by scalar operands that still need to be parsed. */ 205 long junk ATTRIBUTE_UNUSED; 206 207 switch (opindex) 208 { 209 case XSTORMY16_OPERAND_RB : 210 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_Rb_names, & fields->f_Rb); 211 break; 212 case XSTORMY16_OPERAND_RBJ : 213 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_Rb_names, & fields->f_Rbj); 214 break; 215 case XSTORMY16_OPERAND_RD : 216 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rd); 217 break; 218 case XSTORMY16_OPERAND_RDM : 219 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rdm); 220 break; 221 case XSTORMY16_OPERAND_RM : 222 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rm); 223 break; 224 case XSTORMY16_OPERAND_RS : 225 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_gr_names, & fields->f_Rs); 226 break; 227 case XSTORMY16_OPERAND_ABS24 : 228 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_ABS24, &fields->f_abs24); 229 break; 230 case XSTORMY16_OPERAND_BCOND2 : 231 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_h_branchcond, & fields->f_op2); 232 break; 233 case XSTORMY16_OPERAND_BCOND5 : 234 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_h_branchcond, & fields->f_op5); 235 break; 236 case XSTORMY16_OPERAND_HMEM8 : 237 errmsg = parse_mem8 (cd, strp, XSTORMY16_OPERAND_HMEM8, &fields->f_hmem8); 238 break; 239 case XSTORMY16_OPERAND_IMM12 : 240 errmsg = cgen_parse_signed_integer (cd, strp, XSTORMY16_OPERAND_IMM12, &fields->f_imm12); 241 break; 242 case XSTORMY16_OPERAND_IMM16 : 243 errmsg = parse_immediate16 (cd, strp, XSTORMY16_OPERAND_IMM16, &fields->f_imm16); 244 break; 245 case XSTORMY16_OPERAND_IMM2 : 246 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM2, &fields->f_imm2); 247 break; 248 case XSTORMY16_OPERAND_IMM3 : 249 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM3, &fields->f_imm3); 250 break; 251 case XSTORMY16_OPERAND_IMM3B : 252 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM3B, &fields->f_imm3b); 253 break; 254 case XSTORMY16_OPERAND_IMM4 : 255 errmsg = parse_small_immediate (cd, strp, XSTORMY16_OPERAND_IMM4, &fields->f_imm4); 256 break; 257 case XSTORMY16_OPERAND_IMM8 : 258 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_IMM8, &fields->f_imm8); 259 break; 260 case XSTORMY16_OPERAND_IMM8SMALL : 261 errmsg = parse_small_immediate (cd, strp, XSTORMY16_OPERAND_IMM8SMALL, &fields->f_imm8); 262 break; 263 case XSTORMY16_OPERAND_LMEM8 : 264 errmsg = parse_mem8 (cd, strp, XSTORMY16_OPERAND_LMEM8, &fields->f_lmem8); 265 break; 266 case XSTORMY16_OPERAND_REL12 : 267 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL12, &fields->f_rel12); 268 break; 269 case XSTORMY16_OPERAND_REL12A : 270 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL12A, &fields->f_rel12a); 271 break; 272 case XSTORMY16_OPERAND_REL8_2 : 273 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL8_2, &fields->f_rel8_2); 274 break; 275 case XSTORMY16_OPERAND_REL8_4 : 276 errmsg = cgen_parse_unsigned_integer (cd, strp, XSTORMY16_OPERAND_REL8_4, &fields->f_rel8_4); 277 break; 278 case XSTORMY16_OPERAND_WS2 : 279 errmsg = cgen_parse_keyword (cd, strp, & xstormy16_cgen_opval_h_wordsize, & fields->f_op2m); 280 break; 281 282 default : 283 /* xgettext:c-format */ 284 fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex); 285 abort (); 286 } 287 288 return errmsg; 289 } 290 291 cgen_parse_fn * const xstormy16_cgen_parse_handlers[] = 292 { 293 parse_insn_normal, 294 }; 295 296 void 297 xstormy16_cgen_init_asm (cd) 298 CGEN_CPU_DESC cd; 299 { 300 xstormy16_cgen_init_opcode_table (cd); 301 xstormy16_cgen_init_ibld_table (cd); 302 cd->parse_handlers = & xstormy16_cgen_parse_handlers[0]; 303 cd->parse_operand = xstormy16_cgen_parse_operand; 304 } 305 306 307 308 /* Regex construction routine. 309 310 This translates an opcode syntax string into a regex string, 311 by replacing any non-character syntax element (such as an 312 opcode) with the pattern '.*' 313 314 It then compiles the regex and stores it in the opcode, for 315 later use by xstormy16_cgen_assemble_insn 316 317 Returns NULL for success, an error message for failure. */ 318 319 char * 320 xstormy16_cgen_build_insn_regex (insn) 321 CGEN_INSN *insn; 322 { 323 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); 324 const char *mnem = CGEN_INSN_MNEMONIC (insn); 325 char rxbuf[CGEN_MAX_RX_ELEMENTS]; 326 char *rx = rxbuf; 327 const CGEN_SYNTAX_CHAR_TYPE *syn; 328 int reg_err; 329 330 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); 331 332 /* Mnemonics come first in the syntax string. */ 333 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 334 return _("missing mnemonic in syntax string"); 335 ++syn; 336 337 /* Generate a case sensitive regular expression that emulates case 338 insensitive matching in the "C" locale. We cannot generate a case 339 insensitive regular expression because in Turkish locales, 'i' and 'I' 340 are not equal modulo case conversion. */ 341 342 /* Copy the literal mnemonic out of the insn. */ 343 for (; *mnem; mnem++) 344 { 345 char c = *mnem; 346 347 if (ISALPHA (c)) 348 { 349 *rx++ = '['; 350 *rx++ = TOLOWER (c); 351 *rx++ = TOUPPER (c); 352 *rx++ = ']'; 353 } 354 else 355 *rx++ = c; 356 } 357 358 /* Copy any remaining literals from the syntax string into the rx. */ 359 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) 360 { 361 if (CGEN_SYNTAX_CHAR_P (* syn)) 362 { 363 char c = CGEN_SYNTAX_CHAR (* syn); 364 365 switch (c) 366 { 367 /* Escape any regex metacharacters in the syntax. */ 368 case '.': case '[': case '\\': 369 case '*': case '^': case '$': 370 371 #ifdef CGEN_ESCAPE_EXTENDED_REGEX 372 case '?': case '{': case '}': 373 case '(': case ')': case '*': 374 case '|': case '+': case ']': 375 #endif 376 *rx++ = '\\'; 377 *rx++ = c; 378 break; 379 380 default: 381 if (ISALPHA (c)) 382 { 383 *rx++ = '['; 384 *rx++ = TOLOWER (c); 385 *rx++ = TOUPPER (c); 386 *rx++ = ']'; 387 } 388 else 389 *rx++ = c; 390 break; 391 } 392 } 393 else 394 { 395 /* Replace non-syntax fields with globs. */ 396 *rx++ = '.'; 397 *rx++ = '*'; 398 } 399 } 400 401 /* Trailing whitespace ok. */ 402 * rx++ = '['; 403 * rx++ = ' '; 404 * rx++ = '\t'; 405 * rx++ = ']'; 406 * rx++ = '*'; 407 408 /* But anchor it after that. */ 409 * rx++ = '$'; 410 * rx = '\0'; 411 412 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); 413 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); 414 415 if (reg_err == 0) 416 return NULL; 417 else 418 { 419 static char msg[80]; 420 421 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); 422 regfree ((regex_t *) CGEN_INSN_RX (insn)); 423 free (CGEN_INSN_RX (insn)); 424 (CGEN_INSN_RX (insn)) = NULL; 425 return msg; 426 } 427 } 428 429 430 /* Default insn parser. 431 432 The syntax string is scanned and operands are parsed and stored in FIELDS. 433 Relocs are queued as we go via other callbacks. 434 435 ??? Note that this is currently an all-or-nothing parser. If we fail to 436 parse the instruction, we return 0 and the caller will start over from 437 the beginning. Backtracking will be necessary in parsing subexpressions, 438 but that can be handled there. Not handling backtracking here may get 439 expensive in the case of the m68k. Deal with later. 440 441 Returns NULL for success, an error message for failure. */ 442 443 static const char * 444 parse_insn_normal (cd, insn, strp, fields) 445 CGEN_CPU_DESC cd; 446 const CGEN_INSN *insn; 447 const char **strp; 448 CGEN_FIELDS *fields; 449 { 450 /* ??? Runtime added insns not handled yet. */ 451 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 452 const char *str = *strp; 453 const char *errmsg; 454 const char *p; 455 const CGEN_SYNTAX_CHAR_TYPE * syn; 456 #ifdef CGEN_MNEMONIC_OPERANDS 457 /* FIXME: wip */ 458 int past_opcode_p; 459 #endif 460 461 /* For now we assume the mnemonic is first (there are no leading operands). 462 We can parse it without needing to set up operand parsing. 463 GAS's input scrubber will ensure mnemonics are lowercase, but we may 464 not be called from GAS. */ 465 p = CGEN_INSN_MNEMONIC (insn); 466 while (*p && TOLOWER (*p) == TOLOWER (*str)) 467 ++p, ++str; 468 469 if (* p) 470 return _("unrecognized instruction"); 471 472 #ifndef CGEN_MNEMONIC_OPERANDS 473 if (* str && ! ISSPACE (* str)) 474 return _("unrecognized instruction"); 475 #endif 476 477 CGEN_INIT_PARSE (cd); 478 cgen_init_parse_operand (cd); 479 #ifdef CGEN_MNEMONIC_OPERANDS 480 past_opcode_p = 0; 481 #endif 482 483 /* We don't check for (*str != '\0') here because we want to parse 484 any trailing fake arguments in the syntax string. */ 485 syn = CGEN_SYNTAX_STRING (syntax); 486 487 /* Mnemonics come first for now, ensure valid string. */ 488 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 489 abort (); 490 491 ++syn; 492 493 while (* syn != 0) 494 { 495 /* Non operand chars must match exactly. */ 496 if (CGEN_SYNTAX_CHAR_P (* syn)) 497 { 498 /* FIXME: While we allow for non-GAS callers above, we assume the 499 first char after the mnemonic part is a space. */ 500 /* FIXME: We also take inappropriate advantage of the fact that 501 GAS's input scrubber will remove extraneous blanks. */ 502 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) 503 { 504 #ifdef CGEN_MNEMONIC_OPERANDS 505 if (CGEN_SYNTAX_CHAR(* syn) == ' ') 506 past_opcode_p = 1; 507 #endif 508 ++ syn; 509 ++ str; 510 } 511 else if (*str) 512 { 513 /* Syntax char didn't match. Can't be this insn. */ 514 static char msg [80]; 515 516 /* xgettext:c-format */ 517 sprintf (msg, _("syntax error (expected char `%c', found `%c')"), 518 CGEN_SYNTAX_CHAR(*syn), *str); 519 return msg; 520 } 521 else 522 { 523 /* Ran out of input. */ 524 static char msg [80]; 525 526 /* xgettext:c-format */ 527 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), 528 CGEN_SYNTAX_CHAR(*syn)); 529 return msg; 530 } 531 continue; 532 } 533 534 /* We have an operand of some sort. */ 535 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), 536 &str, fields); 537 if (errmsg) 538 return errmsg; 539 540 /* Done with this operand, continue with next one. */ 541 ++ syn; 542 } 543 544 /* If we're at the end of the syntax string, we're done. */ 545 if (* syn == 0) 546 { 547 /* FIXME: For the moment we assume a valid `str' can only contain 548 blanks now. IE: We needn't try again with a longer version of 549 the insn and it is assumed that longer versions of insns appear 550 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ 551 while (ISSPACE (* str)) 552 ++ str; 553 554 if (* str != '\0') 555 return _("junk at end of line"); /* FIXME: would like to include `str' */ 556 557 return NULL; 558 } 559 560 /* We couldn't parse it. */ 561 return _("unrecognized instruction"); 562 } 563 564 /* Main entry point. 565 This routine is called for each instruction to be assembled. 566 STR points to the insn to be assembled. 567 We assume all necessary tables have been initialized. 568 The assembled instruction, less any fixups, is stored in BUF. 569 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value 570 still needs to be converted to target byte order, otherwise BUF is an array 571 of bytes in target byte order. 572 The result is a pointer to the insn's entry in the opcode table, 573 or NULL if an error occured (an error message will have already been 574 printed). 575 576 Note that when processing (non-alias) macro-insns, 577 this function recurses. 578 579 ??? It's possible to make this cpu-independent. 580 One would have to deal with a few minor things. 581 At this point in time doing so would be more of a curiosity than useful 582 [for example this file isn't _that_ big], but keeping the possibility in 583 mind helps keep the design clean. */ 584 585 const CGEN_INSN * 586 xstormy16_cgen_assemble_insn (cd, str, fields, buf, errmsg) 587 CGEN_CPU_DESC cd; 588 const char *str; 589 CGEN_FIELDS *fields; 590 CGEN_INSN_BYTES_PTR buf; 591 char **errmsg; 592 { 593 const char *start; 594 CGEN_INSN_LIST *ilist; 595 const char *parse_errmsg = NULL; 596 const char *insert_errmsg = NULL; 597 int recognized_mnemonic = 0; 598 599 /* Skip leading white space. */ 600 while (ISSPACE (* str)) 601 ++ str; 602 603 /* The instructions are stored in hashed lists. 604 Get the first in the list. */ 605 ilist = CGEN_ASM_LOOKUP_INSN (cd, str); 606 607 /* Keep looking until we find a match. */ 608 start = str; 609 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) 610 { 611 const CGEN_INSN *insn = ilist->insn; 612 recognized_mnemonic = 1; 613 614 #ifdef CGEN_VALIDATE_INSN_SUPPORTED 615 /* Not usually needed as unsupported opcodes 616 shouldn't be in the hash lists. */ 617 /* Is this insn supported by the selected cpu? */ 618 if (! xstormy16_cgen_insn_supported (cd, insn)) 619 continue; 620 #endif 621 /* If the RELAX attribute is set, this is an insn that shouldn't be 622 chosen immediately. Instead, it is used during assembler/linker 623 relaxation if possible. */ 624 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAX) != 0) 625 continue; 626 627 str = start; 628 629 /* Skip this insn if str doesn't look right lexically. */ 630 if (CGEN_INSN_RX (insn) != NULL && 631 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) 632 continue; 633 634 /* Allow parse/insert handlers to obtain length of insn. */ 635 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 636 637 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); 638 if (parse_errmsg != NULL) 639 continue; 640 641 /* ??? 0 is passed for `pc'. */ 642 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, 643 (bfd_vma) 0); 644 if (insert_errmsg != NULL) 645 continue; 646 647 /* It is up to the caller to actually output the insn and any 648 queued relocs. */ 649 return insn; 650 } 651 652 { 653 static char errbuf[150]; 654 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS 655 const char *tmp_errmsg; 656 657 /* If requesting verbose error messages, use insert_errmsg. 658 Failing that, use parse_errmsg. */ 659 tmp_errmsg = (insert_errmsg ? insert_errmsg : 660 parse_errmsg ? parse_errmsg : 661 recognized_mnemonic ? 662 _("unrecognized form of instruction") : 663 _("unrecognized instruction")); 664 665 if (strlen (start) > 50) 666 /* xgettext:c-format */ 667 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); 668 else 669 /* xgettext:c-format */ 670 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); 671 #else 672 if (strlen (start) > 50) 673 /* xgettext:c-format */ 674 sprintf (errbuf, _("bad instruction `%.50s...'"), start); 675 else 676 /* xgettext:c-format */ 677 sprintf (errbuf, _("bad instruction `%.50s'"), start); 678 #endif 679 680 *errmsg = errbuf; 681 return NULL; 682 } 683 } 684 685 #if 0 /* This calls back to GAS which we can't do without care. */ 686 687 /* Record each member of OPVALS in the assembler's symbol table. 688 This lets GAS parse registers for us. 689 ??? Interesting idea but not currently used. */ 690 691 /* Record each member of OPVALS in the assembler's symbol table. 692 FIXME: Not currently used. */ 693 694 void 695 xstormy16_cgen_asm_hash_keywords (cd, opvals) 696 CGEN_CPU_DESC cd; 697 CGEN_KEYWORD *opvals; 698 { 699 CGEN_KEYWORD_SEARCH search = cgen_keyword_search_init (opvals, NULL); 700 const CGEN_KEYWORD_ENTRY * ke; 701 702 while ((ke = cgen_keyword_search_next (& search)) != NULL) 703 { 704 #if 0 /* Unnecessary, should be done in the search routine. */ 705 if (! xstormy16_cgen_opval_supported (ke)) 706 continue; 707 #endif 708 cgen_asm_record_register (cd, ke->name, ke->value); 709 } 710 } 711 712 #endif /* 0 */ 713