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 "mep-desc.h" 35 #include "mep-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 #include "elf/mep.h" 55 56 #define CGEN_VALIDATE_INSN_SUPPORTED 57 #define mep_cgen_insn_supported mep_cgen_insn_supported_asm 58 59 const char * parse_csrn (CGEN_CPU_DESC, const char **, CGEN_KEYWORD *, long *); 60 const char * parse_tpreg (CGEN_CPU_DESC, const char **, CGEN_KEYWORD *, long *); 61 const char * parse_spreg (CGEN_CPU_DESC, const char **, CGEN_KEYWORD *, long *); 62 const char * parse_mep_align (CGEN_CPU_DESC, const char **, enum cgen_operand_type, long *); 63 const char * parse_mep_alignu (CGEN_CPU_DESC, const char **, enum cgen_operand_type, unsigned long *); 64 static const char * parse_signed16 (CGEN_CPU_DESC, const char **, int, long *); 65 static const char * parse_signed16_range (CGEN_CPU_DESC, const char **, int, long *) ATTRIBUTE_UNUSED; 66 static const char * parse_unsigned16 (CGEN_CPU_DESC, const char **, int, unsigned long *); 67 static const char * parse_unsigned16_range (CGEN_CPU_DESC, const char **, int, unsigned long *) ATTRIBUTE_UNUSED; 68 static const char * parse_lo16 (CGEN_CPU_DESC, const char **, int, long *, long); 69 static const char * parse_unsigned7 (CGEN_CPU_DESC, const char **, enum cgen_operand_type, unsigned long *); 70 static const char * parse_zero (CGEN_CPU_DESC, const char **, int, long *); 71 72 const char * 73 parse_csrn (CGEN_CPU_DESC cd, const char **strp, 74 CGEN_KEYWORD *keyword_table, long *field) 75 { 76 const char *err; 77 unsigned long value; 78 79 err = cgen_parse_keyword (cd, strp, keyword_table, field); 80 if (!err) 81 return NULL; 82 83 err = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CSRN_IDX, & value); 84 if (err) 85 return err; 86 *field = value; 87 return NULL; 88 } 89 90 /* begin-cop-ip-parse-handlers */ 91 static const char * 92 parse_ivc2_cr (CGEN_CPU_DESC, 93 const char **, 94 CGEN_KEYWORD *, 95 long *) ATTRIBUTE_UNUSED; 96 static const char * 97 parse_ivc2_cr (CGEN_CPU_DESC cd, 98 const char **strp, 99 CGEN_KEYWORD *keyword_table ATTRIBUTE_UNUSED, 100 long *field) 101 { 102 return cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr_ivc2, field); 103 } 104 static const char * 105 parse_ivc2_ccr (CGEN_CPU_DESC, 106 const char **, 107 CGEN_KEYWORD *, 108 long *) ATTRIBUTE_UNUSED; 109 static const char * 110 parse_ivc2_ccr (CGEN_CPU_DESC cd, 111 const char **strp, 112 CGEN_KEYWORD *keyword_table ATTRIBUTE_UNUSED, 113 long *field) 114 { 115 return cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, field); 116 } 117 /* end-cop-ip-parse-handlers */ 118 119 const char * 120 parse_tpreg (CGEN_CPU_DESC cd, const char ** strp, 121 CGEN_KEYWORD *keyword_table, long *field) 122 { 123 const char *err; 124 125 err = cgen_parse_keyword (cd, strp, keyword_table, field); 126 if (err) 127 return err; 128 if (*field != 13) 129 return _("Only $tp or $13 allowed for this opcode"); 130 return NULL; 131 } 132 133 const char * 134 parse_spreg (CGEN_CPU_DESC cd, const char ** strp, 135 CGEN_KEYWORD *keyword_table, long *field) 136 { 137 const char *err; 138 139 err = cgen_parse_keyword (cd, strp, keyword_table, field); 140 if (err) 141 return err; 142 if (*field != 15) 143 return _("Only $sp or $15 allowed for this opcode"); 144 return NULL; 145 } 146 147 const char * 148 parse_mep_align (CGEN_CPU_DESC cd, const char ** strp, 149 enum cgen_operand_type type, long *field) 150 { 151 long lsbs = 0; 152 const char *err; 153 154 switch (type) 155 { 156 case MEP_OPERAND_PCREL8A2: 157 case MEP_OPERAND_PCREL12A2: 158 case MEP_OPERAND_PCREL17A2: 159 case MEP_OPERAND_PCREL24A2: 160 err = cgen_parse_signed_integer (cd, strp, type, field); 161 break; 162 case MEP_OPERAND_PCABS24A2: 163 case MEP_OPERAND_UDISP7: 164 case MEP_OPERAND_UDISP7A2: 165 case MEP_OPERAND_UDISP7A4: 166 case MEP_OPERAND_UIMM7A4: 167 case MEP_OPERAND_ADDR24A4: 168 err = cgen_parse_unsigned_integer (cd, strp, type, (unsigned long *) field); 169 break; 170 default: 171 abort(); 172 } 173 if (err) 174 return err; 175 switch (type) 176 { 177 case MEP_OPERAND_UDISP7: 178 lsbs = 0; 179 break; 180 case MEP_OPERAND_PCREL8A2: 181 case MEP_OPERAND_PCREL12A2: 182 case MEP_OPERAND_PCREL17A2: 183 case MEP_OPERAND_PCREL24A2: 184 case MEP_OPERAND_PCABS24A2: 185 case MEP_OPERAND_UDISP7A2: 186 lsbs = *field & 1; 187 break; 188 case MEP_OPERAND_UDISP7A4: 189 case MEP_OPERAND_UIMM7A4: 190 case MEP_OPERAND_ADDR24A4: 191 lsbs = *field & 3; 192 break; 193 lsbs = *field & 7; 194 break; 195 default: 196 /* Safe assumption? */ 197 abort (); 198 } 199 if (lsbs) 200 return "Value is not aligned enough"; 201 return NULL; 202 } 203 204 const char * 205 parse_mep_alignu (CGEN_CPU_DESC cd, const char ** strp, 206 enum cgen_operand_type type, unsigned long *field) 207 { 208 return parse_mep_align (cd, strp, type, (long *) field); 209 } 210 211 212 /* Handle %lo(), %tpoff(), %sdaoff(), %hi(), and other signed 213 constants in a signed context. */ 214 215 static const char * 216 parse_signed16 (CGEN_CPU_DESC cd, 217 const char **strp, 218 int opindex, 219 long *valuep) 220 { 221 return parse_lo16 (cd, strp, opindex, valuep, 1); 222 } 223 224 static const char * 225 parse_lo16 (CGEN_CPU_DESC cd, 226 const char **strp, 227 int opindex, 228 long *valuep, 229 long signedp) 230 { 231 const char *errmsg; 232 enum cgen_parse_operand_result result_type; 233 bfd_vma value; 234 235 if (strncasecmp (*strp, "%lo(", 4) == 0) 236 { 237 *strp += 4; 238 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_LOW16, 239 & result_type, & value); 240 if (**strp != ')') 241 return _("missing `)'"); 242 ++*strp; 243 if (errmsg == NULL 244 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 245 value &= 0xffff; 246 if (signedp) 247 *valuep = (long)(short) value; 248 else 249 *valuep = value; 250 return errmsg; 251 } 252 253 if (strncasecmp (*strp, "%hi(", 4) == 0) 254 { 255 *strp += 4; 256 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_HI16S, 257 & result_type, & value); 258 if (**strp != ')') 259 return _("missing `)'"); 260 ++*strp; 261 if (errmsg == NULL 262 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 263 value = (value + 0x8000) >> 16; 264 *valuep = value; 265 return errmsg; 266 } 267 268 if (strncasecmp (*strp, "%uhi(", 5) == 0) 269 { 270 *strp += 5; 271 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_HI16U, 272 & result_type, & value); 273 if (**strp != ')') 274 return _("missing `)'"); 275 ++*strp; 276 if (errmsg == NULL 277 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 278 value = value >> 16; 279 *valuep = value; 280 return errmsg; 281 } 282 283 if (strncasecmp (*strp, "%sdaoff(", 8) == 0) 284 { 285 *strp += 8; 286 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_GPREL, 287 NULL, & value); 288 if (**strp != ')') 289 return _("missing `)'"); 290 ++*strp; 291 *valuep = value; 292 return errmsg; 293 } 294 295 if (strncasecmp (*strp, "%tpoff(", 7) == 0) 296 { 297 *strp += 7; 298 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_TPREL, 299 NULL, & value); 300 if (**strp != ')') 301 return _("missing `)'"); 302 ++*strp; 303 *valuep = value; 304 return errmsg; 305 } 306 307 if (**strp == '%') 308 return _("invalid %function() here"); 309 310 return cgen_parse_signed_integer (cd, strp, opindex, valuep); 311 } 312 313 static const char * 314 parse_unsigned16 (CGEN_CPU_DESC cd, 315 const char **strp, 316 int opindex, 317 unsigned long *valuep) 318 { 319 return parse_lo16 (cd, strp, opindex, (long *) valuep, 0); 320 } 321 322 static const char * 323 parse_signed16_range (CGEN_CPU_DESC cd, 324 const char **strp, 325 int opindex, 326 signed long *valuep) 327 { 328 const char *errmsg = 0; 329 signed long value; 330 331 errmsg = cgen_parse_signed_integer (cd, strp, opindex, & value); 332 if (errmsg) 333 return errmsg; 334 335 if (value < -32768 || value > 32767) 336 return _("Immediate is out of range -32768 to 32767"); 337 338 *valuep = value; 339 return 0; 340 } 341 342 static const char * 343 parse_unsigned16_range (CGEN_CPU_DESC cd, 344 const char **strp, 345 int opindex, 346 unsigned long *valuep) 347 { 348 const char *errmsg = 0; 349 unsigned long value; 350 351 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, & value); 352 if (errmsg) 353 return errmsg; 354 355 if (value > 65535) 356 return _("Immediate is out of range 0 to 65535"); 357 358 *valuep = value; 359 return 0; 360 } 361 362 /* A special case of parse_signed16 which accepts only the value zero. */ 363 364 static const char * 365 parse_zero (CGEN_CPU_DESC cd, const char **strp, int opindex, long *valuep) 366 { 367 const char *errmsg; 368 enum cgen_parse_operand_result result_type; 369 bfd_vma value; 370 371 /*fprintf(stderr, "dj: signed parse opindex `%s'\n", *strp);*/ 372 373 /* Prevent ($ry) from being attempted as an expression on 'sw $rx,($ry)'. 374 It will fail and cause ry to be listed as an undefined symbol in the 375 listing. */ 376 if (strncmp (*strp, "($", 2) == 0) 377 return "not zero"; /* any string will do -- will never be seen. */ 378 379 if (strncasecmp (*strp, "%lo(", 4) == 0) 380 { 381 *strp += 4; 382 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_LOW16, 383 &result_type, &value); 384 if (**strp != ')') 385 return "missing `)'"; 386 ++*strp; 387 if (errmsg == NULL 388 && (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0)) 389 return "not zero"; /* any string will do -- will never be seen. */ 390 *valuep = value; 391 return errmsg; 392 } 393 394 if (strncasecmp (*strp, "%hi(", 4) == 0) 395 { 396 *strp += 4; 397 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_HI16S, 398 &result_type, &value); 399 if (**strp != ')') 400 return "missing `)'"; 401 ++*strp; 402 if (errmsg == NULL 403 && (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0)) 404 return "not zero"; /* any string will do -- will never be seen. */ 405 *valuep = value; 406 return errmsg; 407 } 408 409 if (strncasecmp (*strp, "%uhi(", 5) == 0) 410 { 411 *strp += 5; 412 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_HI16U, 413 &result_type, &value); 414 if (**strp != ')') 415 return "missing `)'"; 416 ++*strp; 417 if (errmsg == NULL 418 && (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0)) 419 return "not zero"; /* any string will do -- will never be seen. */ 420 *valuep = value; 421 return errmsg; 422 } 423 424 if (strncasecmp (*strp, "%sdaoff(", 8) == 0) 425 { 426 *strp += 8; 427 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_GPREL, 428 &result_type, &value); 429 if (**strp != ')') 430 return "missing `)'"; 431 ++*strp; 432 if (errmsg == NULL 433 && (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0)) 434 return "not zero"; /* any string will do -- will never be seen. */ 435 *valuep = value; 436 return errmsg; 437 } 438 439 if (strncasecmp (*strp, "%tpoff(", 7) == 0) 440 { 441 *strp += 7; 442 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_TPREL, 443 &result_type, &value); 444 if (**strp != ')') 445 return "missing `)'"; 446 ++*strp; 447 if (errmsg == NULL 448 && (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0)) 449 return "not zero"; /* any string will do -- will never be seen. */ 450 *valuep = value; 451 return errmsg; 452 } 453 454 if (**strp == '%') 455 return "invalid %function() here"; 456 457 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_NONE, 458 &result_type, &value); 459 if (errmsg == NULL 460 && (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0)) 461 return "not zero"; /* any string will do -- will never be seen. */ 462 463 return errmsg; 464 } 465 466 static const char * 467 parse_unsigned7 (CGEN_CPU_DESC cd, const char **strp, 468 enum cgen_operand_type opindex, unsigned long *valuep) 469 { 470 const char *errmsg; 471 bfd_vma value; 472 473 /* fprintf(stderr, "dj: unsigned7 parse `%s'\n", *strp); */ 474 475 if (strncasecmp (*strp, "%tpoff(", 7) == 0) 476 { 477 int reloc; 478 *strp += 7; 479 switch (opindex) 480 { 481 case MEP_OPERAND_UDISP7: 482 reloc = BFD_RELOC_MEP_TPREL7; 483 break; 484 case MEP_OPERAND_UDISP7A2: 485 reloc = BFD_RELOC_MEP_TPREL7A2; 486 break; 487 case MEP_OPERAND_UDISP7A4: 488 reloc = BFD_RELOC_MEP_TPREL7A4; 489 break; 490 default: 491 /* Safe assumption? */ 492 abort (); 493 } 494 errmsg = cgen_parse_address (cd, strp, opindex, reloc, 495 NULL, &value); 496 if (**strp != ')') 497 return "missing `)'"; 498 ++*strp; 499 *valuep = value; 500 return errmsg; 501 } 502 503 if (**strp == '%') 504 return _("invalid %function() here"); 505 506 return parse_mep_alignu (cd, strp, opindex, valuep); 507 } 508 509 static ATTRIBUTE_UNUSED const char * 510 parse_cdisp10 (CGEN_CPU_DESC cd, 511 const char **strp, 512 int opindex, 513 long *valuep) 514 { 515 const char *errmsg = 0; 516 signed long value; 517 long have_zero = 0; 518 int wide = 0; 519 int alignment; 520 521 switch (opindex) 522 { 523 case MEP_OPERAND_CDISP10A4: 524 alignment = 2; 525 break; 526 case MEP_OPERAND_CDISP10A2: 527 alignment = 1; 528 break; 529 case MEP_OPERAND_CDISP10: 530 default: 531 alignment = 0; 532 break; 533 } 534 535 if ((MEP_CPU & EF_MEP_CPU_MASK) == EF_MEP_CPU_C5) 536 wide = 1; 537 538 if (strncmp (*strp, "0x0", 3) == 0 539 || (**strp == '0' && *(*strp + 1) != 'x')) 540 have_zero = 1; 541 542 errmsg = cgen_parse_signed_integer (cd, strp, opindex, & value); 543 if (errmsg) 544 return errmsg; 545 546 if (wide) 547 { 548 if (value < -512 || value > 511) 549 return _("Immediate is out of range -512 to 511"); 550 } 551 else 552 { 553 if (value < -128 || value > 127) 554 return _("Immediate is out of range -128 to 127"); 555 } 556 557 if (value & ((1<<alignment)-1)) 558 return _("Value is not aligned enough"); 559 560 /* If this field may require a relocation then use larger dsp16. */ 561 if (! have_zero && value == 0) 562 return (wide ? _("Immediate is out of range -512 to 511") 563 : _("Immediate is out of range -128 to 127")); 564 565 *valuep = value; 566 return 0; 567 } 568 569 /* BEGIN LIGHTWEIGHT MACRO PROCESSOR. */ 570 571 #define MAXARGS 9 572 573 typedef struct 574 { 575 char *name; 576 char *expansion; 577 } macro; 578 579 typedef struct 580 { 581 const char *start; 582 int len; 583 } arg; 584 585 macro macros[] = 586 { 587 { "sizeof", "(`1.end + (- `1))"}, 588 { "startof", "(`1 | 0)" }, 589 { "align4", "(`1&(~3))"}, 590 /*{ "hi", "(((`1+0x8000)>>16) & 0xffff)" }, */ 591 /*{ "lo", "(`1 & 0xffff)" }, */ 592 /*{ "sdaoff", "((`1-__sdabase) & 0x7f)"}, */ 593 /*{ "tpoff", "((`1-__tpbase) & 0x7f)"}, */ 594 { 0,0 } 595 }; 596 597 static char * expand_string (const char *, int); 598 599 static const char * 600 mep_cgen_expand_macros_and_parse_operand 601 (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *); 602 603 static char * 604 str_append (char *dest, const char *input, int len) 605 { 606 char *new_dest; 607 int oldlen; 608 609 if (len == 0) 610 return dest; 611 /* printf("str_append: <<%s>>, <<%s>>, %d\n", dest, input, len); */ 612 oldlen = (dest ? strlen(dest) : 0); 613 new_dest = realloc (dest, oldlen + len + 1); 614 memset (new_dest + oldlen, 0, len + 1); 615 return strncat (new_dest, input, len); 616 } 617 618 static macro * 619 lookup_macro (const char *name) 620 { 621 macro *m; 622 623 for (m = macros; m->name; ++m) 624 if (strncmp (m->name, name, strlen(m->name)) == 0) 625 return m; 626 627 return 0; 628 } 629 630 static char * 631 expand_macro (arg *args, int narg, macro *mac) 632 { 633 char *result = 0, *rescanned_result = 0; 634 char *e = mac->expansion; 635 char *mark = e; 636 int mac_arg = 0; 637 638 /* printf("expanding macro %s with %d args\n", mac->name, narg + 1); */ 639 while (*e) 640 { 641 if (*e == '`' && 642 (*e+1) && 643 ((*(e + 1) - '1') <= MAXARGS) && 644 ((*(e + 1) - '1') <= narg)) 645 { 646 result = str_append (result, mark, e - mark); 647 mac_arg = (*(e + 1) - '1'); 648 /* printf("replacing `%d with %s\n", mac_arg+1, args[mac_arg].start); */ 649 result = str_append (result, args[mac_arg].start, args[mac_arg].len); 650 ++e; 651 mark = e+1; 652 } 653 ++e; 654 } 655 656 if (mark != e) 657 result = str_append (result, mark, e - mark); 658 659 if (result) 660 { 661 rescanned_result = expand_string (result, 0); 662 free (result); 663 return rescanned_result; 664 } 665 else 666 return result; 667 } 668 669 #define IN_TEXT 0 670 #define IN_ARGS 1 671 672 static char * 673 expand_string (const char *in, int first_only) 674 { 675 int num_expansions = 0; 676 int depth = 0; 677 int narg = -1; 678 arg args[MAXARGS]; 679 int state = IN_TEXT; 680 const char *mark = in; 681 macro *pmacro = NULL; 682 char *expansion = 0; 683 char *result = 0; 684 685 while (*in) 686 { 687 switch (state) 688 { 689 case IN_TEXT: 690 if (*in == '%' && *(in + 1) && (!first_only || num_expansions == 0)) 691 { 692 pmacro = lookup_macro (in + 1); 693 if (pmacro) 694 { 695 /* printf("entering state %d at '%s'...\n", state, in); */ 696 result = str_append (result, mark, in - mark); 697 mark = in; 698 in += 1 + strlen (pmacro->name); 699 while (*in == ' ') ++in; 700 if (*in != '(') 701 { 702 state = IN_TEXT; 703 pmacro = NULL; 704 } 705 else 706 { 707 state = IN_ARGS; 708 narg = 0; 709 args[narg].start = in + 1; 710 args[narg].len = 0; 711 mark = in + 1; 712 } 713 } 714 } 715 break; 716 case IN_ARGS: 717 if (depth == 0) 718 { 719 switch (*in) 720 { 721 case ',': 722 narg++; 723 args[narg].start = (in + 1); 724 args[narg].len = 0; 725 break; 726 case ')': 727 state = IN_TEXT; 728 /* printf("entering state %d at '%s'...\n", state, in); */ 729 if (pmacro) 730 { 731 expansion = 0; 732 expansion = expand_macro (args, narg, pmacro); 733 num_expansions++; 734 if (expansion) 735 { 736 result = str_append (result, expansion, strlen (expansion)); 737 free (expansion); 738 } 739 } 740 else 741 { 742 result = str_append (result, mark, in - mark); 743 } 744 pmacro = NULL; 745 mark = in + 1; 746 break; 747 case '(': 748 depth++; 749 default: 750 args[narg].len++; 751 break; 752 } 753 } 754 else 755 { 756 if (*in == ')') 757 depth--; 758 if (narg > -1) 759 args[narg].len++; 760 } 761 762 } 763 ++in; 764 } 765 766 if (mark != in) 767 result = str_append (result, mark, in - mark); 768 769 return result; 770 } 771 772 #undef IN_ARGS 773 #undef IN_TEXT 774 #undef MAXARGS 775 776 777 /* END LIGHTWEIGHT MACRO PROCESSOR. */ 778 779 const char * mep_cgen_parse_operand 780 (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *); 781 782 const char * 783 mep_cgen_expand_macros_and_parse_operand (CGEN_CPU_DESC cd, int opindex, 784 const char ** strp_in, CGEN_FIELDS * fields) 785 { 786 const char * errmsg = NULL; 787 char *str = 0, *hold = 0; 788 const char **strp = 0; 789 790 /* Set up a new pointer to macro-expanded string. */ 791 str = expand_string (*strp_in, 1); 792 /* fprintf (stderr, " expanded <<%s>> to <<%s>>\n", *strp_in, str); */ 793 794 hold = str; 795 strp = (const char **)(&str); 796 797 errmsg = mep_cgen_parse_operand (cd, opindex, strp, fields); 798 799 /* Now work out the advance. */ 800 if (strlen (str) == 0) 801 *strp_in += strlen (*strp_in); 802 803 else 804 { 805 if (strstr (*strp_in, str)) 806 /* A macro-expansion was pulled off the front. */ 807 *strp_in = strstr (*strp_in, str); 808 else 809 /* A non-macro-expansion was pulled off the front. */ 810 *strp_in += (str - hold); 811 } 812 813 if (hold) 814 free (hold); 815 816 return errmsg; 817 } 818 819 #define CGEN_ASM_INIT_HOOK (cd->parse_operand = mep_cgen_expand_macros_and_parse_operand); 820 821 /* -- dis.c */ 822 823 const char * mep_cgen_parse_operand 824 (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *); 825 826 /* Main entry point for operand parsing. 827 828 This function is basically just a big switch statement. Earlier versions 829 used tables to look up the function to use, but 830 - if the table contains both assembler and disassembler functions then 831 the disassembler contains much of the assembler and vice-versa, 832 - there's a lot of inlining possibilities as things grow, 833 - using a switch statement avoids the function call overhead. 834 835 This function could be moved into `parse_insn_normal', but keeping it 836 separate makes clear the interface between `parse_insn_normal' and each of 837 the handlers. */ 838 839 const char * 840 mep_cgen_parse_operand (CGEN_CPU_DESC cd, 841 int opindex, 842 const char ** strp, 843 CGEN_FIELDS * fields) 844 { 845 const char * errmsg = NULL; 846 /* Used by scalar operands that still need to be parsed. */ 847 long junk ATTRIBUTE_UNUSED; 848 849 switch (opindex) 850 { 851 case MEP_OPERAND_ADDR24A4 : 852 errmsg = parse_mep_alignu (cd, strp, MEP_OPERAND_ADDR24A4, (unsigned long *) (& fields->f_24u8a4n)); 853 break; 854 case MEP_OPERAND_C5RMUIMM20 : 855 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_C5RMUIMM20, (unsigned long *) (& fields->f_c5_rmuimm20)); 856 break; 857 case MEP_OPERAND_C5RNMUIMM24 : 858 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_C5RNMUIMM24, (unsigned long *) (& fields->f_c5_rnmuimm24)); 859 break; 860 case MEP_OPERAND_CALLNUM : 861 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CALLNUM, (unsigned long *) (& fields->f_callnum)); 862 break; 863 case MEP_OPERAND_CCCC : 864 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CCCC, (unsigned long *) (& fields->f_rm)); 865 break; 866 case MEP_OPERAND_CCRN : 867 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr, & fields->f_ccrn); 868 break; 869 case MEP_OPERAND_CDISP10 : 870 errmsg = parse_cdisp10 (cd, strp, MEP_OPERAND_CDISP10, (long *) (& fields->f_cdisp10)); 871 break; 872 case MEP_OPERAND_CDISP10A2 : 873 errmsg = parse_cdisp10 (cd, strp, MEP_OPERAND_CDISP10A2, (long *) (& fields->f_cdisp10)); 874 break; 875 case MEP_OPERAND_CDISP10A4 : 876 errmsg = parse_cdisp10 (cd, strp, MEP_OPERAND_CDISP10A4, (long *) (& fields->f_cdisp10)); 877 break; 878 case MEP_OPERAND_CDISP10A8 : 879 errmsg = parse_cdisp10 (cd, strp, MEP_OPERAND_CDISP10A8, (long *) (& fields->f_cdisp10)); 880 break; 881 case MEP_OPERAND_CDISP12 : 882 errmsg = cgen_parse_signed_integer (cd, strp, MEP_OPERAND_CDISP12, (long *) (& fields->f_12s20)); 883 break; 884 case MEP_OPERAND_CIMM4 : 885 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CIMM4, (unsigned long *) (& fields->f_rn)); 886 break; 887 case MEP_OPERAND_CIMM5 : 888 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CIMM5, (unsigned long *) (& fields->f_5u24)); 889 break; 890 case MEP_OPERAND_CODE16 : 891 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CODE16, (unsigned long *) (& fields->f_16u16)); 892 break; 893 case MEP_OPERAND_CODE24 : 894 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CODE24, (unsigned long *) (& fields->f_24u4n)); 895 break; 896 case MEP_OPERAND_CP_FLAG : 897 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr, & junk); 898 break; 899 case MEP_OPERAND_CRN : 900 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr, & fields->f_crn); 901 break; 902 case MEP_OPERAND_CRN64 : 903 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr64, & fields->f_crn); 904 break; 905 case MEP_OPERAND_CRNX : 906 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr, & fields->f_crnx); 907 break; 908 case MEP_OPERAND_CRNX64 : 909 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr64, & fields->f_crnx); 910 break; 911 case MEP_OPERAND_CROC : 912 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr64, & fields->f_ivc2_5u7); 913 break; 914 case MEP_OPERAND_CROP : 915 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr64, & fields->f_ivc2_5u23); 916 break; 917 case MEP_OPERAND_CRPC : 918 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr64, & fields->f_ivc2_5u26); 919 break; 920 case MEP_OPERAND_CRPP : 921 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr64, & fields->f_ivc2_5u18); 922 break; 923 case MEP_OPERAND_CRQC : 924 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr64, & fields->f_ivc2_5u21); 925 break; 926 case MEP_OPERAND_CRQP : 927 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr64, & fields->f_ivc2_5u13); 928 break; 929 case MEP_OPERAND_CSRN : 930 errmsg = parse_csrn (cd, strp, & mep_cgen_opval_h_csr, & fields->f_csrn); 931 break; 932 case MEP_OPERAND_CSRN_IDX : 933 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CSRN_IDX, (unsigned long *) (& fields->f_csrn)); 934 break; 935 case MEP_OPERAND_DBG : 936 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 937 break; 938 case MEP_OPERAND_DEPC : 939 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 940 break; 941 case MEP_OPERAND_EPC : 942 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 943 break; 944 case MEP_OPERAND_EXC : 945 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 946 break; 947 case MEP_OPERAND_HI : 948 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 949 break; 950 case MEP_OPERAND_IMM16P0 : 951 errmsg = parse_unsigned16_range (cd, strp, MEP_OPERAND_IMM16P0, (unsigned long *) (& fields->f_ivc2_imm16p0)); 952 break; 953 case MEP_OPERAND_IMM3P12 : 954 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM3P12, (unsigned long *) (& fields->f_ivc2_3u12)); 955 break; 956 case MEP_OPERAND_IMM3P25 : 957 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM3P25, (unsigned long *) (& fields->f_ivc2_3u25)); 958 break; 959 case MEP_OPERAND_IMM3P4 : 960 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM3P4, (unsigned long *) (& fields->f_ivc2_3u4)); 961 break; 962 case MEP_OPERAND_IMM3P5 : 963 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM3P5, (unsigned long *) (& fields->f_ivc2_3u5)); 964 break; 965 case MEP_OPERAND_IMM3P9 : 966 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM3P9, (unsigned long *) (& fields->f_ivc2_3u9)); 967 break; 968 case MEP_OPERAND_IMM4P10 : 969 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM4P10, (unsigned long *) (& fields->f_ivc2_4u10)); 970 break; 971 case MEP_OPERAND_IMM4P4 : 972 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM4P4, (unsigned long *) (& fields->f_ivc2_4u4)); 973 break; 974 case MEP_OPERAND_IMM4P8 : 975 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM4P8, (unsigned long *) (& fields->f_ivc2_4u8)); 976 break; 977 case MEP_OPERAND_IMM5P23 : 978 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM5P23, (unsigned long *) (& fields->f_ivc2_5u23)); 979 break; 980 case MEP_OPERAND_IMM5P3 : 981 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM5P3, (unsigned long *) (& fields->f_ivc2_5u3)); 982 break; 983 case MEP_OPERAND_IMM5P7 : 984 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM5P7, (unsigned long *) (& fields->f_ivc2_5u7)); 985 break; 986 case MEP_OPERAND_IMM5P8 : 987 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM5P8, (unsigned long *) (& fields->f_ivc2_5u8)); 988 break; 989 case MEP_OPERAND_IMM6P2 : 990 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM6P2, (unsigned long *) (& fields->f_ivc2_6u2)); 991 break; 992 case MEP_OPERAND_IMM6P6 : 993 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM6P6, (unsigned long *) (& fields->f_ivc2_6u6)); 994 break; 995 case MEP_OPERAND_IMM8P0 : 996 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM8P0, (unsigned long *) (& fields->f_ivc2_8u0)); 997 break; 998 case MEP_OPERAND_IMM8P20 : 999 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM8P20, (unsigned long *) (& fields->f_ivc2_8u20)); 1000 break; 1001 case MEP_OPERAND_IMM8P4 : 1002 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IMM8P4, (unsigned long *) (& fields->f_ivc2_8u4)); 1003 break; 1004 case MEP_OPERAND_IVC_X_0_2 : 1005 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IVC_X_0_2, (unsigned long *) (& fields->f_ivc2_2u0)); 1006 break; 1007 case MEP_OPERAND_IVC_X_0_3 : 1008 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IVC_X_0_3, (unsigned long *) (& fields->f_ivc2_3u0)); 1009 break; 1010 case MEP_OPERAND_IVC_X_0_4 : 1011 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IVC_X_0_4, (unsigned long *) (& fields->f_ivc2_4u0)); 1012 break; 1013 case MEP_OPERAND_IVC_X_0_5 : 1014 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IVC_X_0_5, (unsigned long *) (& fields->f_ivc2_5u0)); 1015 break; 1016 case MEP_OPERAND_IVC_X_6_1 : 1017 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IVC_X_6_1, (unsigned long *) (& fields->f_ivc2_1u6)); 1018 break; 1019 case MEP_OPERAND_IVC_X_6_2 : 1020 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IVC_X_6_2, (unsigned long *) (& fields->f_ivc2_2u6)); 1021 break; 1022 case MEP_OPERAND_IVC_X_6_3 : 1023 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_IVC_X_6_3, (unsigned long *) (& fields->f_ivc2_3u6)); 1024 break; 1025 case MEP_OPERAND_IVC2_ACC0_0 : 1026 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1027 break; 1028 case MEP_OPERAND_IVC2_ACC0_1 : 1029 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1030 break; 1031 case MEP_OPERAND_IVC2_ACC0_2 : 1032 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1033 break; 1034 case MEP_OPERAND_IVC2_ACC0_3 : 1035 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1036 break; 1037 case MEP_OPERAND_IVC2_ACC0_4 : 1038 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1039 break; 1040 case MEP_OPERAND_IVC2_ACC0_5 : 1041 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1042 break; 1043 case MEP_OPERAND_IVC2_ACC0_6 : 1044 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1045 break; 1046 case MEP_OPERAND_IVC2_ACC0_7 : 1047 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1048 break; 1049 case MEP_OPERAND_IVC2_ACC1_0 : 1050 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1051 break; 1052 case MEP_OPERAND_IVC2_ACC1_1 : 1053 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1054 break; 1055 case MEP_OPERAND_IVC2_ACC1_2 : 1056 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1057 break; 1058 case MEP_OPERAND_IVC2_ACC1_3 : 1059 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1060 break; 1061 case MEP_OPERAND_IVC2_ACC1_4 : 1062 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1063 break; 1064 case MEP_OPERAND_IVC2_ACC1_5 : 1065 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1066 break; 1067 case MEP_OPERAND_IVC2_ACC1_6 : 1068 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1069 break; 1070 case MEP_OPERAND_IVC2_ACC1_7 : 1071 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1072 break; 1073 case MEP_OPERAND_IVC2_CC : 1074 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1075 break; 1076 case MEP_OPERAND_IVC2_COFA0 : 1077 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1078 break; 1079 case MEP_OPERAND_IVC2_COFA1 : 1080 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1081 break; 1082 case MEP_OPERAND_IVC2_COFR0 : 1083 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1084 break; 1085 case MEP_OPERAND_IVC2_COFR1 : 1086 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1087 break; 1088 case MEP_OPERAND_IVC2_CSAR0 : 1089 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1090 break; 1091 case MEP_OPERAND_IVC2_CSAR1 : 1092 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & junk); 1093 break; 1094 case MEP_OPERAND_IVC2C3CCRN : 1095 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & fields->f_ivc2_ccrn_c3); 1096 break; 1097 case MEP_OPERAND_IVC2CCRN : 1098 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, & fields->f_ivc2_ccrn); 1099 break; 1100 case MEP_OPERAND_IVC2CRN : 1101 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr64, & fields->f_ivc2_crnx); 1102 break; 1103 case MEP_OPERAND_IVC2RM : 1104 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_ivc2_crm); 1105 break; 1106 case MEP_OPERAND_LO : 1107 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 1108 break; 1109 case MEP_OPERAND_LP : 1110 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 1111 break; 1112 case MEP_OPERAND_MB0 : 1113 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 1114 break; 1115 case MEP_OPERAND_MB1 : 1116 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 1117 break; 1118 case MEP_OPERAND_ME0 : 1119 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 1120 break; 1121 case MEP_OPERAND_ME1 : 1122 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 1123 break; 1124 case MEP_OPERAND_NPC : 1125 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 1126 break; 1127 case MEP_OPERAND_OPT : 1128 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 1129 break; 1130 case MEP_OPERAND_PCABS24A2 : 1131 errmsg = parse_mep_alignu (cd, strp, MEP_OPERAND_PCABS24A2, (unsigned long *) (& fields->f_24u5a2n)); 1132 break; 1133 case MEP_OPERAND_PCREL12A2 : 1134 errmsg = parse_mep_align (cd, strp, MEP_OPERAND_PCREL12A2, (long *) (& fields->f_12s4a2)); 1135 break; 1136 case MEP_OPERAND_PCREL17A2 : 1137 errmsg = parse_mep_align (cd, strp, MEP_OPERAND_PCREL17A2, (long *) (& fields->f_17s16a2)); 1138 break; 1139 case MEP_OPERAND_PCREL24A2 : 1140 errmsg = parse_mep_align (cd, strp, MEP_OPERAND_PCREL24A2, (long *) (& fields->f_24s5a2n)); 1141 break; 1142 case MEP_OPERAND_PCREL8A2 : 1143 errmsg = parse_mep_align (cd, strp, MEP_OPERAND_PCREL8A2, (long *) (& fields->f_8s8a2)); 1144 break; 1145 case MEP_OPERAND_PSW : 1146 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 1147 break; 1148 case MEP_OPERAND_R0 : 1149 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & junk); 1150 break; 1151 case MEP_OPERAND_R1 : 1152 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & junk); 1153 break; 1154 case MEP_OPERAND_RL : 1155 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rl); 1156 break; 1157 case MEP_OPERAND_RL5 : 1158 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rl5); 1159 break; 1160 case MEP_OPERAND_RM : 1161 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rm); 1162 break; 1163 case MEP_OPERAND_RMA : 1164 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rm); 1165 break; 1166 case MEP_OPERAND_RN : 1167 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn); 1168 break; 1169 case MEP_OPERAND_RN3 : 1170 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn3); 1171 break; 1172 case MEP_OPERAND_RN3C : 1173 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn3); 1174 break; 1175 case MEP_OPERAND_RN3L : 1176 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn3); 1177 break; 1178 case MEP_OPERAND_RN3S : 1179 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn3); 1180 break; 1181 case MEP_OPERAND_RN3UC : 1182 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn3); 1183 break; 1184 case MEP_OPERAND_RN3UL : 1185 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn3); 1186 break; 1187 case MEP_OPERAND_RN3US : 1188 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn3); 1189 break; 1190 case MEP_OPERAND_RNC : 1191 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn); 1192 break; 1193 case MEP_OPERAND_RNL : 1194 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn); 1195 break; 1196 case MEP_OPERAND_RNS : 1197 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn); 1198 break; 1199 case MEP_OPERAND_RNUC : 1200 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn); 1201 break; 1202 case MEP_OPERAND_RNUL : 1203 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn); 1204 break; 1205 case MEP_OPERAND_RNUS : 1206 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & fields->f_rn); 1207 break; 1208 case MEP_OPERAND_SAR : 1209 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_csr, & junk); 1210 break; 1211 case MEP_OPERAND_SDISP16 : 1212 errmsg = parse_signed16 (cd, strp, MEP_OPERAND_SDISP16, (long *) (& fields->f_16s16)); 1213 break; 1214 case MEP_OPERAND_SIMM16 : 1215 errmsg = parse_signed16 (cd, strp, MEP_OPERAND_SIMM16, (long *) (& fields->f_16s16)); 1216 break; 1217 case MEP_OPERAND_SIMM16P0 : 1218 errmsg = parse_signed16_range (cd, strp, MEP_OPERAND_SIMM16P0, (long *) (& fields->f_ivc2_simm16p0)); 1219 break; 1220 case MEP_OPERAND_SIMM6 : 1221 errmsg = cgen_parse_signed_integer (cd, strp, MEP_OPERAND_SIMM6, (long *) (& fields->f_6s8)); 1222 break; 1223 case MEP_OPERAND_SIMM8 : 1224 errmsg = cgen_parse_signed_integer (cd, strp, MEP_OPERAND_SIMM8, (long *) (& fields->f_8s8)); 1225 break; 1226 case MEP_OPERAND_SIMM8P0 : 1227 errmsg = cgen_parse_signed_integer (cd, strp, MEP_OPERAND_SIMM8P0, (long *) (& fields->f_ivc2_8s0)); 1228 break; 1229 case MEP_OPERAND_SIMM8P20 : 1230 errmsg = cgen_parse_signed_integer (cd, strp, MEP_OPERAND_SIMM8P20, (long *) (& fields->f_ivc2_8s20)); 1231 break; 1232 case MEP_OPERAND_SIMM8P4 : 1233 errmsg = cgen_parse_signed_integer (cd, strp, MEP_OPERAND_SIMM8P4, (long *) (& fields->f_ivc2_8s4)); 1234 break; 1235 case MEP_OPERAND_SP : 1236 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & junk); 1237 break; 1238 case MEP_OPERAND_SPR : 1239 errmsg = parse_spreg (cd, strp, & mep_cgen_opval_h_gpr, & junk); 1240 break; 1241 case MEP_OPERAND_TP : 1242 errmsg = cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_gpr, & junk); 1243 break; 1244 case MEP_OPERAND_TPR : 1245 errmsg = parse_tpreg (cd, strp, & mep_cgen_opval_h_gpr, & junk); 1246 break; 1247 case MEP_OPERAND_UDISP2 : 1248 errmsg = cgen_parse_signed_integer (cd, strp, MEP_OPERAND_UDISP2, (long *) (& fields->f_2u6)); 1249 break; 1250 case MEP_OPERAND_UDISP7 : 1251 errmsg = parse_unsigned7 (cd, strp, MEP_OPERAND_UDISP7, (unsigned long *) (& fields->f_7u9)); 1252 break; 1253 case MEP_OPERAND_UDISP7A2 : 1254 errmsg = parse_unsigned7 (cd, strp, MEP_OPERAND_UDISP7A2, (unsigned long *) (& fields->f_7u9a2)); 1255 break; 1256 case MEP_OPERAND_UDISP7A4 : 1257 errmsg = parse_unsigned7 (cd, strp, MEP_OPERAND_UDISP7A4, (unsigned long *) (& fields->f_7u9a4)); 1258 break; 1259 case MEP_OPERAND_UIMM16 : 1260 errmsg = parse_unsigned16 (cd, strp, MEP_OPERAND_UIMM16, (unsigned long *) (& fields->f_16u16)); 1261 break; 1262 case MEP_OPERAND_UIMM2 : 1263 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_UIMM2, (unsigned long *) (& fields->f_2u10)); 1264 break; 1265 case MEP_OPERAND_UIMM24 : 1266 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_UIMM24, (unsigned long *) (& fields->f_24u8n)); 1267 break; 1268 case MEP_OPERAND_UIMM3 : 1269 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_UIMM3, (unsigned long *) (& fields->f_3u5)); 1270 break; 1271 case MEP_OPERAND_UIMM4 : 1272 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_UIMM4, (unsigned long *) (& fields->f_4u8)); 1273 break; 1274 case MEP_OPERAND_UIMM5 : 1275 errmsg = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_UIMM5, (unsigned long *) (& fields->f_5u8)); 1276 break; 1277 case MEP_OPERAND_UIMM7A4 : 1278 errmsg = parse_mep_alignu (cd, strp, MEP_OPERAND_UIMM7A4, (unsigned long *) (& fields->f_7u9a4)); 1279 break; 1280 case MEP_OPERAND_ZERO : 1281 errmsg = parse_zero (cd, strp, MEP_OPERAND_ZERO, (long *) (& junk)); 1282 break; 1283 1284 default : 1285 /* xgettext:c-format */ 1286 fprintf (stderr, _("Unrecognized field %d while parsing.\n"), opindex); 1287 abort (); 1288 } 1289 1290 return errmsg; 1291 } 1292 1293 cgen_parse_fn * const mep_cgen_parse_handlers[] = 1294 { 1295 parse_insn_normal, 1296 }; 1297 1298 void 1299 mep_cgen_init_asm (CGEN_CPU_DESC cd) 1300 { 1301 mep_cgen_init_opcode_table (cd); 1302 mep_cgen_init_ibld_table (cd); 1303 cd->parse_handlers = & mep_cgen_parse_handlers[0]; 1304 cd->parse_operand = mep_cgen_parse_operand; 1305 #ifdef CGEN_ASM_INIT_HOOK 1306 CGEN_ASM_INIT_HOOK 1307 #endif 1308 } 1309 1310 1311 1313 /* Regex construction routine. 1314 1315 This translates an opcode syntax string into a regex string, 1316 by replacing any non-character syntax element (such as an 1317 opcode) with the pattern '.*' 1318 1319 It then compiles the regex and stores it in the opcode, for 1320 later use by mep_cgen_assemble_insn 1321 1322 Returns NULL for success, an error message for failure. */ 1323 1324 char * 1325 mep_cgen_build_insn_regex (CGEN_INSN *insn) 1326 { 1327 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); 1328 const char *mnem = CGEN_INSN_MNEMONIC (insn); 1329 char rxbuf[CGEN_MAX_RX_ELEMENTS]; 1330 char *rx = rxbuf; 1331 const CGEN_SYNTAX_CHAR_TYPE *syn; 1332 int reg_err; 1333 1334 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); 1335 1336 /* Mnemonics come first in the syntax string. */ 1337 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 1338 return _("missing mnemonic in syntax string"); 1339 ++syn; 1340 1341 /* Generate a case sensitive regular expression that emulates case 1342 insensitive matching in the "C" locale. We cannot generate a case 1343 insensitive regular expression because in Turkish locales, 'i' and 'I' 1344 are not equal modulo case conversion. */ 1345 1346 /* Copy the literal mnemonic out of the insn. */ 1347 for (; *mnem; mnem++) 1348 { 1349 char c = *mnem; 1350 1351 if (ISALPHA (c)) 1352 { 1353 *rx++ = '['; 1354 *rx++ = TOLOWER (c); 1355 *rx++ = TOUPPER (c); 1356 *rx++ = ']'; 1357 } 1358 else 1359 *rx++ = c; 1360 } 1361 1362 /* Copy any remaining literals from the syntax string into the rx. */ 1363 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) 1364 { 1365 if (CGEN_SYNTAX_CHAR_P (* syn)) 1366 { 1367 char c = CGEN_SYNTAX_CHAR (* syn); 1368 1369 switch (c) 1370 { 1371 /* Escape any regex metacharacters in the syntax. */ 1372 case '.': case '[': case '\\': 1373 case '*': case '^': case '$': 1374 1375 #ifdef CGEN_ESCAPE_EXTENDED_REGEX 1376 case '?': case '{': case '}': 1377 case '(': case ')': case '*': 1378 case '|': case '+': case ']': 1379 #endif 1380 *rx++ = '\\'; 1381 *rx++ = c; 1382 break; 1383 1384 default: 1385 if (ISALPHA (c)) 1386 { 1387 *rx++ = '['; 1388 *rx++ = TOLOWER (c); 1389 *rx++ = TOUPPER (c); 1390 *rx++ = ']'; 1391 } 1392 else 1393 *rx++ = c; 1394 break; 1395 } 1396 } 1397 else 1398 { 1399 /* Replace non-syntax fields with globs. */ 1400 *rx++ = '.'; 1401 *rx++ = '*'; 1402 } 1403 } 1404 1405 /* Trailing whitespace ok. */ 1406 * rx++ = '['; 1407 * rx++ = ' '; 1408 * rx++ = '\t'; 1409 * rx++ = ']'; 1410 * rx++ = '*'; 1411 1412 /* But anchor it after that. */ 1413 * rx++ = '$'; 1414 * rx = '\0'; 1415 1416 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); 1417 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); 1418 1419 if (reg_err == 0) 1420 return NULL; 1421 else 1422 { 1423 static char msg[80]; 1424 1425 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); 1426 regfree ((regex_t *) CGEN_INSN_RX (insn)); 1427 free (CGEN_INSN_RX (insn)); 1428 (CGEN_INSN_RX (insn)) = NULL; 1429 return msg; 1430 } 1431 } 1432 1433 1434 /* Default insn parser. 1436 1437 The syntax string is scanned and operands are parsed and stored in FIELDS. 1438 Relocs are queued as we go via other callbacks. 1439 1440 ??? Note that this is currently an all-or-nothing parser. If we fail to 1441 parse the instruction, we return 0 and the caller will start over from 1442 the beginning. Backtracking will be necessary in parsing subexpressions, 1443 but that can be handled there. Not handling backtracking here may get 1444 expensive in the case of the m68k. Deal with later. 1445 1446 Returns NULL for success, an error message for failure. */ 1447 1448 static const char * 1449 parse_insn_normal (CGEN_CPU_DESC cd, 1450 const CGEN_INSN *insn, 1451 const char **strp, 1452 CGEN_FIELDS *fields) 1453 { 1454 /* ??? Runtime added insns not handled yet. */ 1455 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 1456 const char *str = *strp; 1457 const char *errmsg; 1458 const char *p; 1459 const CGEN_SYNTAX_CHAR_TYPE * syn; 1460 #ifdef CGEN_MNEMONIC_OPERANDS 1461 /* FIXME: wip */ 1462 int past_opcode_p; 1463 #endif 1464 1465 /* For now we assume the mnemonic is first (there are no leading operands). 1466 We can parse it without needing to set up operand parsing. 1467 GAS's input scrubber will ensure mnemonics are lowercase, but we may 1468 not be called from GAS. */ 1469 p = CGEN_INSN_MNEMONIC (insn); 1470 while (*p && TOLOWER (*p) == TOLOWER (*str)) 1471 ++p, ++str; 1472 1473 if (* p) 1474 return _("unrecognized instruction"); 1475 1476 #ifndef CGEN_MNEMONIC_OPERANDS 1477 if (* str && ! ISSPACE (* str)) 1478 return _("unrecognized instruction"); 1479 #endif 1480 1481 CGEN_INIT_PARSE (cd); 1482 cgen_init_parse_operand (cd); 1483 #ifdef CGEN_MNEMONIC_OPERANDS 1484 past_opcode_p = 0; 1485 #endif 1486 1487 /* We don't check for (*str != '\0') here because we want to parse 1488 any trailing fake arguments in the syntax string. */ 1489 syn = CGEN_SYNTAX_STRING (syntax); 1490 1491 /* Mnemonics come first for now, ensure valid string. */ 1492 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 1493 abort (); 1494 1495 ++syn; 1496 1497 while (* syn != 0) 1498 { 1499 /* Non operand chars must match exactly. */ 1500 if (CGEN_SYNTAX_CHAR_P (* syn)) 1501 { 1502 /* FIXME: While we allow for non-GAS callers above, we assume the 1503 first char after the mnemonic part is a space. */ 1504 /* FIXME: We also take inappropriate advantage of the fact that 1505 GAS's input scrubber will remove extraneous blanks. */ 1506 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) 1507 { 1508 #ifdef CGEN_MNEMONIC_OPERANDS 1509 if (CGEN_SYNTAX_CHAR(* syn) == ' ') 1510 past_opcode_p = 1; 1511 #endif 1512 ++ syn; 1513 ++ str; 1514 } 1515 else if (*str) 1516 { 1517 /* Syntax char didn't match. Can't be this insn. */ 1518 static char msg [80]; 1519 1520 /* xgettext:c-format */ 1521 sprintf (msg, _("syntax error (expected char `%c', found `%c')"), 1522 CGEN_SYNTAX_CHAR(*syn), *str); 1523 return msg; 1524 } 1525 else 1526 { 1527 /* Ran out of input. */ 1528 static char msg [80]; 1529 1530 /* xgettext:c-format */ 1531 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), 1532 CGEN_SYNTAX_CHAR(*syn)); 1533 return msg; 1534 } 1535 continue; 1536 } 1537 1538 #ifdef CGEN_MNEMONIC_OPERANDS 1539 (void) past_opcode_p; 1540 #endif 1541 /* We have an operand of some sort. */ 1542 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields); 1543 if (errmsg) 1544 return errmsg; 1545 1546 /* Done with this operand, continue with next one. */ 1547 ++ syn; 1548 } 1549 1550 /* If we're at the end of the syntax string, we're done. */ 1551 if (* syn == 0) 1552 { 1553 /* FIXME: For the moment we assume a valid `str' can only contain 1554 blanks now. IE: We needn't try again with a longer version of 1555 the insn and it is assumed that longer versions of insns appear 1556 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ 1557 while (ISSPACE (* str)) 1558 ++ str; 1559 1560 if (* str != '\0') 1561 return _("junk at end of line"); /* FIXME: would like to include `str' */ 1562 1563 return NULL; 1564 } 1565 1566 /* We couldn't parse it. */ 1567 return _("unrecognized instruction"); 1568 } 1569 1570 /* Main entry point. 1572 This routine is called for each instruction to be assembled. 1573 STR points to the insn to be assembled. 1574 We assume all necessary tables have been initialized. 1575 The assembled instruction, less any fixups, is stored in BUF. 1576 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value 1577 still needs to be converted to target byte order, otherwise BUF is an array 1578 of bytes in target byte order. 1579 The result is a pointer to the insn's entry in the opcode table, 1580 or NULL if an error occured (an error message will have already been 1581 printed). 1582 1583 Note that when processing (non-alias) macro-insns, 1584 this function recurses. 1585 1586 ??? It's possible to make this cpu-independent. 1587 One would have to deal with a few minor things. 1588 At this point in time doing so would be more of a curiosity than useful 1589 [for example this file isn't _that_ big], but keeping the possibility in 1590 mind helps keep the design clean. */ 1591 1592 const CGEN_INSN * 1593 mep_cgen_assemble_insn (CGEN_CPU_DESC cd, 1594 const char *str, 1595 CGEN_FIELDS *fields, 1596 CGEN_INSN_BYTES_PTR buf, 1597 char **errmsg) 1598 { 1599 const char *start; 1600 CGEN_INSN_LIST *ilist; 1601 const char *parse_errmsg = NULL; 1602 const char *insert_errmsg = NULL; 1603 int recognized_mnemonic = 0; 1604 1605 /* Skip leading white space. */ 1606 while (ISSPACE (* str)) 1607 ++ str; 1608 1609 /* The instructions are stored in hashed lists. 1610 Get the first in the list. */ 1611 ilist = CGEN_ASM_LOOKUP_INSN (cd, str); 1612 1613 /* Keep looking until we find a match. */ 1614 start = str; 1615 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) 1616 { 1617 const CGEN_INSN *insn = ilist->insn; 1618 recognized_mnemonic = 1; 1619 1620 #ifdef CGEN_VALIDATE_INSN_SUPPORTED 1621 /* Not usually needed as unsupported opcodes 1622 shouldn't be in the hash lists. */ 1623 /* Is this insn supported by the selected cpu? */ 1624 if (! mep_cgen_insn_supported (cd, insn)) 1625 continue; 1626 #endif 1627 /* If the RELAXED attribute is set, this is an insn that shouldn't be 1628 chosen immediately. Instead, it is used during assembler/linker 1629 relaxation if possible. */ 1630 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) 1631 continue; 1632 1633 str = start; 1634 1635 /* Skip this insn if str doesn't look right lexically. */ 1636 if (CGEN_INSN_RX (insn) != NULL && 1637 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) 1638 continue; 1639 1640 /* Allow parse/insert handlers to obtain length of insn. */ 1641 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 1642 1643 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); 1644 if (parse_errmsg != NULL) 1645 continue; 1646 1647 /* ??? 0 is passed for `pc'. */ 1648 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, 1649 (bfd_vma) 0); 1650 if (insert_errmsg != NULL) 1651 continue; 1652 1653 /* It is up to the caller to actually output the insn and any 1654 queued relocs. */ 1655 return insn; 1656 } 1657 1658 { 1659 static char errbuf[150]; 1660 const char *tmp_errmsg; 1661 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS 1662 #define be_verbose 1 1663 #else 1664 #define be_verbose 0 1665 #endif 1666 1667 if (be_verbose) 1668 { 1669 /* If requesting verbose error messages, use insert_errmsg. 1670 Failing that, use parse_errmsg. */ 1671 tmp_errmsg = (insert_errmsg ? insert_errmsg : 1672 parse_errmsg ? parse_errmsg : 1673 recognized_mnemonic ? 1674 _("unrecognized form of instruction") : 1675 _("unrecognized instruction")); 1676 1677 if (strlen (start) > 50) 1678 /* xgettext:c-format */ 1679 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); 1680 else 1681 /* xgettext:c-format */ 1682 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); 1683 } 1684 else 1685 { 1686 if (strlen (start) > 50) 1687 /* xgettext:c-format */ 1688 sprintf (errbuf, _("bad instruction `%.50s...'"), start); 1689 else 1690 /* xgettext:c-format */ 1691 sprintf (errbuf, _("bad instruction `%.50s'"), start); 1692 } 1693 1694 *errmsg = errbuf; 1695 return NULL; 1696 } 1697 } 1698
