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) 1996-2017 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. */ 50 51 /* -- asm.c */ 52 53 #include "elf/mep.h" 54 55 #define CGEN_VALIDATE_INSN_SUPPORTED 56 #define mep_cgen_insn_supported mep_cgen_insn_supported_asm 57 58 const char * parse_csrn (CGEN_CPU_DESC, const char **, CGEN_KEYWORD *, long *); 59 const char * parse_tpreg (CGEN_CPU_DESC, const char **, CGEN_KEYWORD *, long *); 60 const char * parse_spreg (CGEN_CPU_DESC, const char **, CGEN_KEYWORD *, long *); 61 const char * parse_mep_align (CGEN_CPU_DESC, const char **, enum cgen_operand_type, long *); 62 const char * parse_mep_alignu (CGEN_CPU_DESC, const char **, enum cgen_operand_type, unsigned long *); 63 static const char * parse_signed16 (CGEN_CPU_DESC, const char **, int, long *); 64 static const char * parse_signed16_range (CGEN_CPU_DESC, const char **, int, long *) ATTRIBUTE_UNUSED; 65 static const char * parse_unsigned16 (CGEN_CPU_DESC, const char **, int, unsigned long *); 66 static const char * parse_unsigned16_range (CGEN_CPU_DESC, const char **, int, unsigned long *) ATTRIBUTE_UNUSED; 67 static const char * parse_lo16 (CGEN_CPU_DESC, const char **, int, long *, long); 68 static const char * parse_unsigned7 (CGEN_CPU_DESC, const char **, enum cgen_operand_type, unsigned long *); 69 static const char * parse_zero (CGEN_CPU_DESC, const char **, int, long *); 70 71 const char * 72 parse_csrn (CGEN_CPU_DESC cd, const char **strp, 73 CGEN_KEYWORD *keyword_table, long *field) 74 { 75 const char *err; 76 unsigned long value; 77 78 err = cgen_parse_keyword (cd, strp, keyword_table, field); 79 if (!err) 80 return NULL; 81 82 err = cgen_parse_unsigned_integer (cd, strp, MEP_OPERAND_CSRN_IDX, & value); 83 if (err) 84 return err; 85 *field = value; 86 return NULL; 87 } 88 89 /* begin-cop-ip-parse-handlers */ 90 static const char * 91 parse_ivc2_cr (CGEN_CPU_DESC, 92 const char **, 93 CGEN_KEYWORD *, 94 long *) ATTRIBUTE_UNUSED; 95 static const char * 96 parse_ivc2_cr (CGEN_CPU_DESC cd, 97 const char **strp, 98 CGEN_KEYWORD *keyword_table ATTRIBUTE_UNUSED, 99 long *field) 100 { 101 return cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_cr_ivc2, field); 102 } 103 static const char * 104 parse_ivc2_ccr (CGEN_CPU_DESC, 105 const char **, 106 CGEN_KEYWORD *, 107 long *) ATTRIBUTE_UNUSED; 108 static const char * 109 parse_ivc2_ccr (CGEN_CPU_DESC cd, 110 const char **strp, 111 CGEN_KEYWORD *keyword_table ATTRIBUTE_UNUSED, 112 long *field) 113 { 114 return cgen_parse_keyword (cd, strp, & mep_cgen_opval_h_ccr_ivc2, field); 115 } 116 /* end-cop-ip-parse-handlers */ 117 118 const char * 119 parse_tpreg (CGEN_CPU_DESC cd, const char ** strp, 120 CGEN_KEYWORD *keyword_table, long *field) 121 { 122 const char *err; 123 124 err = cgen_parse_keyword (cd, strp, keyword_table, field); 125 if (err) 126 return err; 127 if (*field != 13) 128 return _("Only $tp or $13 allowed for this opcode"); 129 return NULL; 130 } 131 132 const char * 133 parse_spreg (CGEN_CPU_DESC cd, const char ** strp, 134 CGEN_KEYWORD *keyword_table, long *field) 135 { 136 const char *err; 137 138 err = cgen_parse_keyword (cd, strp, keyword_table, field); 139 if (err) 140 return err; 141 if (*field != 15) 142 return _("Only $sp or $15 allowed for this opcode"); 143 return NULL; 144 } 145 146 const char * 147 parse_mep_align (CGEN_CPU_DESC cd, const char ** strp, 148 enum cgen_operand_type type, long *field) 149 { 150 long lsbs = 0; 151 const char *err; 152 153 switch (type) 154 { 155 case MEP_OPERAND_PCREL8A2: 156 case MEP_OPERAND_PCREL12A2: 157 case MEP_OPERAND_PCREL17A2: 158 case MEP_OPERAND_PCREL24A2: 159 err = cgen_parse_signed_integer (cd, strp, type, field); 160 break; 161 case MEP_OPERAND_PCABS24A2: 162 case MEP_OPERAND_UDISP7: 163 case MEP_OPERAND_UDISP7A2: 164 case MEP_OPERAND_UDISP7A4: 165 case MEP_OPERAND_UIMM7A4: 166 case MEP_OPERAND_ADDR24A4: 167 err = cgen_parse_unsigned_integer (cd, strp, type, (unsigned long *) field); 168 break; 169 default: 170 abort(); 171 } 172 if (err) 173 return err; 174 switch (type) 175 { 176 case MEP_OPERAND_UDISP7: 177 lsbs = 0; 178 break; 179 case MEP_OPERAND_PCREL8A2: 180 case MEP_OPERAND_PCREL12A2: 181 case MEP_OPERAND_PCREL17A2: 182 case MEP_OPERAND_PCREL24A2: 183 case MEP_OPERAND_PCABS24A2: 184 case MEP_OPERAND_UDISP7A2: 185 lsbs = *field & 1; 186 break; 187 case MEP_OPERAND_UDISP7A4: 188 case MEP_OPERAND_UIMM7A4: 189 case MEP_OPERAND_ADDR24A4: 190 lsbs = *field & 3; 191 break; 192 lsbs = *field & 7; 193 break; 194 default: 195 /* Safe assumption? */ 196 abort (); 197 } 198 if (lsbs) 199 return "Value is not aligned enough"; 200 return NULL; 201 } 202 203 const char * 204 parse_mep_alignu (CGEN_CPU_DESC cd, const char ** strp, 205 enum cgen_operand_type type, unsigned long *field) 206 { 207 return parse_mep_align (cd, strp, type, (long *) field); 208 } 209 210 211 /* Handle %lo(), %tpoff(), %sdaoff(), %hi(), and other signed 212 constants in a signed context. */ 213 214 static const char * 215 parse_signed16 (CGEN_CPU_DESC cd, 216 const char **strp, 217 int opindex, 218 long *valuep) 219 { 220 return parse_lo16 (cd, strp, opindex, valuep, 1); 221 } 222 223 static const char * 224 parse_lo16 (CGEN_CPU_DESC cd, 225 const char **strp, 226 int opindex, 227 long *valuep, 228 long signedp) 229 { 230 const char *errmsg; 231 enum cgen_parse_operand_result result_type; 232 bfd_vma value; 233 234 if (strncasecmp (*strp, "%lo(", 4) == 0) 235 { 236 *strp += 4; 237 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_LOW16, 238 & result_type, & value); 239 if (**strp != ')') 240 return _("missing `)'"); 241 ++*strp; 242 if (errmsg == NULL 243 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 244 value &= 0xffff; 245 if (signedp) 246 *valuep = (long)(short) value; 247 else 248 *valuep = value; 249 return errmsg; 250 } 251 252 if (strncasecmp (*strp, "%hi(", 4) == 0) 253 { 254 *strp += 4; 255 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_HI16S, 256 & result_type, & value); 257 if (**strp != ')') 258 return _("missing `)'"); 259 ++*strp; 260 if (errmsg == NULL 261 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 262 value = (value + 0x8000) >> 16; 263 *valuep = value; 264 return errmsg; 265 } 266 267 if (strncasecmp (*strp, "%uhi(", 5) == 0) 268 { 269 *strp += 5; 270 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_HI16U, 271 & result_type, & value); 272 if (**strp != ')') 273 return _("missing `)'"); 274 ++*strp; 275 if (errmsg == NULL 276 && result_type == CGEN_PARSE_OPERAND_RESULT_NUMBER) 277 value = value >> 16; 278 *valuep = value; 279 return errmsg; 280 } 281 282 if (strncasecmp (*strp, "%sdaoff(", 8) == 0) 283 { 284 *strp += 8; 285 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_GPREL, 286 NULL, & value); 287 if (**strp != ')') 288 return _("missing `)'"); 289 ++*strp; 290 *valuep = value; 291 return errmsg; 292 } 293 294 if (strncasecmp (*strp, "%tpoff(", 7) == 0) 295 { 296 *strp += 7; 297 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_TPREL, 298 NULL, & value); 299 if (**strp != ')') 300 return _("missing `)'"); 301 ++*strp; 302 *valuep = value; 303 return errmsg; 304 } 305 306 if (**strp == '%') 307 return _("invalid %function() here"); 308 309 return cgen_parse_signed_integer (cd, strp, opindex, valuep); 310 } 311 312 static const char * 313 parse_unsigned16 (CGEN_CPU_DESC cd, 314 const char **strp, 315 int opindex, 316 unsigned long *valuep) 317 { 318 return parse_lo16 (cd, strp, opindex, (long *) valuep, 0); 319 } 320 321 static const char * 322 parse_signed16_range (CGEN_CPU_DESC cd, 323 const char **strp, 324 int opindex, 325 signed long *valuep) 326 { 327 const char *errmsg = 0; 328 signed long value; 329 330 errmsg = cgen_parse_signed_integer (cd, strp, opindex, & value); 331 if (errmsg) 332 return errmsg; 333 334 if (value < -32768 || value > 32767) 335 return _("Immediate is out of range -32768 to 32767"); 336 337 *valuep = value; 338 return 0; 339 } 340 341 static const char * 342 parse_unsigned16_range (CGEN_CPU_DESC cd, 343 const char **strp, 344 int opindex, 345 unsigned long *valuep) 346 { 347 const char *errmsg = 0; 348 unsigned long value; 349 350 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, & value); 351 if (errmsg) 352 return errmsg; 353 354 if (value > 65535) 355 return _("Immediate is out of range 0 to 65535"); 356 357 *valuep = value; 358 return 0; 359 } 360 361 /* A special case of parse_signed16 which accepts only the value zero. */ 362 363 static const char * 364 parse_zero (CGEN_CPU_DESC cd, const char **strp, int opindex, long *valuep) 365 { 366 const char *errmsg; 367 enum cgen_parse_operand_result result_type; 368 bfd_vma value; 369 370 /*fprintf(stderr, "dj: signed parse opindex `%s'\n", *strp);*/ 371 372 /* Prevent ($ry) from being attempted as an expression on 'sw $rx,($ry)'. 373 It will fail and cause ry to be listed as an undefined symbol in the 374 listing. */ 375 if (strncmp (*strp, "($", 2) == 0) 376 return "not zero"; /* any string will do -- will never be seen. */ 377 378 if (strncasecmp (*strp, "%lo(", 4) == 0) 379 { 380 *strp += 4; 381 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_LOW16, 382 &result_type, &value); 383 if (**strp != ')') 384 return "missing `)'"; 385 ++*strp; 386 if (errmsg == NULL 387 && (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0)) 388 return "not zero"; /* any string will do -- will never be seen. */ 389 *valuep = value; 390 return errmsg; 391 } 392 393 if (strncasecmp (*strp, "%hi(", 4) == 0) 394 { 395 *strp += 4; 396 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_HI16S, 397 &result_type, &value); 398 if (**strp != ')') 399 return "missing `)'"; 400 ++*strp; 401 if (errmsg == NULL 402 && (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0)) 403 return "not zero"; /* any string will do -- will never be seen. */ 404 *valuep = value; 405 return errmsg; 406 } 407 408 if (strncasecmp (*strp, "%uhi(", 5) == 0) 409 { 410 *strp += 5; 411 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_HI16U, 412 &result_type, &value); 413 if (**strp != ')') 414 return "missing `)'"; 415 ++*strp; 416 if (errmsg == NULL 417 && (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0)) 418 return "not zero"; /* any string will do -- will never be seen. */ 419 *valuep = value; 420 return errmsg; 421 } 422 423 if (strncasecmp (*strp, "%sdaoff(", 8) == 0) 424 { 425 *strp += 8; 426 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_GPREL, 427 &result_type, &value); 428 if (**strp != ')') 429 return "missing `)'"; 430 ++*strp; 431 if (errmsg == NULL 432 && (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0)) 433 return "not zero"; /* any string will do -- will never be seen. */ 434 *valuep = value; 435 return errmsg; 436 } 437 438 if (strncasecmp (*strp, "%tpoff(", 7) == 0) 439 { 440 *strp += 7; 441 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_MEP_TPREL, 442 &result_type, &value); 443 if (**strp != ')') 444 return "missing `)'"; 445 ++*strp; 446 if (errmsg == NULL 447 && (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0)) 448 return "not zero"; /* any string will do -- will never be seen. */ 449 *valuep = value; 450 return errmsg; 451 } 452 453 if (**strp == '%') 454 return "invalid %function() here"; 455 456 errmsg = cgen_parse_address (cd, strp, opindex, BFD_RELOC_NONE, 457 &result_type, &value); 458 if (errmsg == NULL 459 && (result_type != CGEN_PARSE_OPERAND_RESULT_NUMBER || value != 0)) 460 return "not zero"; /* any string will do -- will never be seen. */ 461 462 return errmsg; 463 } 464 465 static const char * 466 parse_unsigned7 (CGEN_CPU_DESC cd, const char **strp, 467 enum cgen_operand_type opindex, unsigned long *valuep) 468 { 469 const char *errmsg; 470 bfd_vma value; 471 472 /* fprintf(stderr, "dj: unsigned7 parse `%s'\n", *strp); */ 473 474 if (strncasecmp (*strp, "%tpoff(", 7) == 0) 475 { 476 int reloc; 477 *strp += 7; 478 switch (opindex) 479 { 480 case MEP_OPERAND_UDISP7: 481 reloc = BFD_RELOC_MEP_TPREL7; 482 break; 483 case MEP_OPERAND_UDISP7A2: 484 reloc = BFD_RELOC_MEP_TPREL7A2; 485 break; 486 case MEP_OPERAND_UDISP7A4: 487 reloc = BFD_RELOC_MEP_TPREL7A4; 488 break; 489 default: 490 /* Safe assumption? */ 491 abort (); 492 } 493 errmsg = cgen_parse_address (cd, strp, opindex, reloc, 494 NULL, &value); 495 if (**strp != ')') 496 return "missing `)'"; 497 ++*strp; 498 *valuep = value; 499 return errmsg; 500 } 501 502 if (**strp == '%') 503 return _("invalid %function() here"); 504 505 return parse_mep_alignu (cd, strp, opindex, valuep); 506 } 507 508 static ATTRIBUTE_UNUSED const char * 509 parse_cdisp10 (CGEN_CPU_DESC cd, 510 const char **strp, 511 int opindex, 512 long *valuep) 513 { 514 const char *errmsg = 0; 515 signed long value; 516 long have_zero = 0; 517 int wide = 0; 518 int alignment; 519 520 switch (opindex) 521 { 522 case MEP_OPERAND_CDISP10A4: 523 alignment = 2; 524 break; 525 case MEP_OPERAND_CDISP10A2: 526 alignment = 1; 527 break; 528 case MEP_OPERAND_CDISP10: 529 default: 530 alignment = 0; 531 break; 532 } 533 534 if ((MEP_CPU & EF_MEP_CPU_MASK) == EF_MEP_CPU_C5) 535 wide = 1; 536 537 if (strncmp (*strp, "0x0", 3) == 0 538 || (**strp == '0' && *(*strp + 1) != 'x')) 539 have_zero = 1; 540 541 errmsg = cgen_parse_signed_integer (cd, strp, opindex, & value); 542 if (errmsg) 543 return errmsg; 544 545 if (wide) 546 { 547 if (value < -512 || value > 511) 548 return _("Immediate is out of range -512 to 511"); 549 } 550 else 551 { 552 if (value < -128 || value > 127) 553 return _("Immediate is out of range -128 to 127"); 554 } 555 556 if (value & ((1<<alignment)-1)) 557 return _("Value is not aligned enough"); 558 559 /* If this field may require a relocation then use larger dsp16. */ 560 if (! have_zero && value == 0) 561 return (wide ? _("Immediate is out of range -512 to 511") 562 : _("Immediate is out of range -128 to 127")); 563 564 *valuep = value; 565 return 0; 566 } 567 568 /* BEGIN LIGHTWEIGHT MACRO PROCESSOR. */ 569 570 #define MAXARGS 9 571 572 typedef struct 573 { 574 char *name; 575 char *expansion; 576 } macro; 577 578 typedef struct 579 { 580 const char *start; 581 int len; 582 } arg; 583 584 macro macros[] = 585 { 586 { "sizeof", "(`1.end + (- `1))"}, 587 { "startof", "(`1 | 0)" }, 588 { "align4", "(`1&(~3))"}, 589 /*{ "hi", "(((`1+0x8000)>>16) & 0xffff)" }, */ 590 /*{ "lo", "(`1 & 0xffff)" }, */ 591 /*{ "sdaoff", "((`1-__sdabase) & 0x7f)"}, */ 592 /*{ "tpoff", "((`1-__tpbase) & 0x7f)"}, */ 593 { 0,0 } 594 }; 595 596 static char * expand_string (const char *, int); 597 598 static const char * 599 mep_cgen_expand_macros_and_parse_operand 600 (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *); 601 602 static char * 603 str_append (char *dest, const char *input, int len) 604 { 605 char *new_dest; 606 int oldlen; 607 608 if (len == 0) 609 return dest; 610 /* printf("str_append: <<%s>>, <<%s>>, %d\n", dest, input, len); */ 611 oldlen = (dest ? strlen(dest) : 0); 612 new_dest = realloc (dest, oldlen + len + 1); 613 memset (new_dest + oldlen, 0, len + 1); 614 return strncat (new_dest, input, len); 615 } 616 617 static macro * 618 lookup_macro (const char *name) 619 { 620 macro *m; 621 622 for (m = macros; m->name; ++m) 623 if (strncmp (m->name, name, strlen(m->name)) == 0) 624 return m; 625 626 return 0; 627 } 628 629 static char * 630 expand_macro (arg *args, int narg, macro *mac) 631 { 632 char *result = 0, *rescanned_result = 0; 633 char *e = mac->expansion; 634 char *mark = e; 635 int mac_arg = 0; 636 637 /* printf("expanding macro %s with %d args\n", mac->name, narg + 1); */ 638 while (*e) 639 { 640 if (*e == '`' && 641 (*e+1) && 642 ((*(e + 1) - '1') <= MAXARGS) && 643 ((*(e + 1) - '1') <= narg)) 644 { 645 result = str_append (result, mark, e - mark); 646 mac_arg = (*(e + 1) - '1'); 647 /* printf("replacing `%d with %s\n", mac_arg+1, args[mac_arg].start); */ 648 result = str_append (result, args[mac_arg].start, args[mac_arg].len); 649 ++e; 650 mark = e+1; 651 } 652 ++e; 653 } 654 655 if (mark != e) 656 result = str_append (result, mark, e - mark); 657 658 if (result) 659 { 660 rescanned_result = expand_string (result, 0); 661 free (result); 662 return rescanned_result; 663 } 664 else 665 return result; 666 } 667 668 #define IN_TEXT 0 669 #define IN_ARGS 1 670 671 static char * 672 expand_string (const char *in, int first_only) 673 { 674 int num_expansions = 0; 675 int depth = 0; 676 int narg = -1; 677 arg args[MAXARGS]; 678 int state = IN_TEXT; 679 const char *mark = in; 680 macro *pmacro = NULL; 681 char *expansion = 0; 682 char *result = 0; 683 684 while (*in) 685 { 686 switch (state) 687 { 688 case IN_TEXT: 689 if (*in == '%' && *(in + 1) && (!first_only || num_expansions == 0)) 690 { 691 pmacro = lookup_macro (in + 1); 692 if (pmacro) 693 { 694 /* printf("entering state %d at '%s'...\n", state, in); */ 695 result = str_append (result, mark, in - mark); 696 mark = in; 697 in += 1 + strlen (pmacro->name); 698 while (*in == ' ') ++in; 699 if (*in != '(') 700 { 701 state = IN_TEXT; 702 pmacro = NULL; 703 } 704 else 705 { 706 state = IN_ARGS; 707 narg = 0; 708 args[narg].start = in + 1; 709 args[narg].len = 0; 710 mark = in + 1; 711 } 712 } 713 } 714 break; 715 case IN_ARGS: 716 if (depth == 0) 717 { 718 switch (*in) 719 { 720 case ',': 721 narg++; 722 args[narg].start = (in + 1); 723 args[narg].len = 0; 724 break; 725 case ')': 726 state = IN_TEXT; 727 /* printf("entering state %d at '%s'...\n", state, in); */ 728 if (pmacro) 729 { 730 expansion = 0; 731 expansion = expand_macro (args, narg, pmacro); 732 num_expansions++; 733 if (expansion) 734 { 735 result = str_append (result, expansion, strlen (expansion)); 736 free (expansion); 737 } 738 } 739 else 740 { 741 result = str_append (result, mark, in - mark); 742 } 743 pmacro = NULL; 744 mark = in + 1; 745 break; 746 case '(': 747 depth++; 748 /* Fall through. */ 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 1312 /* Regex construction routine. 1313 1314 This translates an opcode syntax string into a regex string, 1315 by replacing any non-character syntax element (such as an 1316 opcode) with the pattern '.*' 1317 1318 It then compiles the regex and stores it in the opcode, for 1319 later use by mep_cgen_assemble_insn 1320 1321 Returns NULL for success, an error message for failure. */ 1322 1323 char * 1324 mep_cgen_build_insn_regex (CGEN_INSN *insn) 1325 { 1326 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); 1327 const char *mnem = CGEN_INSN_MNEMONIC (insn); 1328 char rxbuf[CGEN_MAX_RX_ELEMENTS]; 1329 char *rx = rxbuf; 1330 const CGEN_SYNTAX_CHAR_TYPE *syn; 1331 int reg_err; 1332 1333 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); 1334 1335 /* Mnemonics come first in the syntax string. */ 1336 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 1337 return _("missing mnemonic in syntax string"); 1338 ++syn; 1339 1340 /* Generate a case sensitive regular expression that emulates case 1341 insensitive matching in the "C" locale. We cannot generate a case 1342 insensitive regular expression because in Turkish locales, 'i' and 'I' 1343 are not equal modulo case conversion. */ 1344 1345 /* Copy the literal mnemonic out of the insn. */ 1346 for (; *mnem; mnem++) 1347 { 1348 char c = *mnem; 1349 1350 if (ISALPHA (c)) 1351 { 1352 *rx++ = '['; 1353 *rx++ = TOLOWER (c); 1354 *rx++ = TOUPPER (c); 1355 *rx++ = ']'; 1356 } 1357 else 1358 *rx++ = c; 1359 } 1360 1361 /* Copy any remaining literals from the syntax string into the rx. */ 1362 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) 1363 { 1364 if (CGEN_SYNTAX_CHAR_P (* syn)) 1365 { 1366 char c = CGEN_SYNTAX_CHAR (* syn); 1367 1368 switch (c) 1369 { 1370 /* Escape any regex metacharacters in the syntax. */ 1371 case '.': case '[': case '\\': 1372 case '*': case '^': case '$': 1373 1374 #ifdef CGEN_ESCAPE_EXTENDED_REGEX 1375 case '?': case '{': case '}': 1376 case '(': case ')': case '*': 1377 case '|': case '+': case ']': 1378 #endif 1379 *rx++ = '\\'; 1380 *rx++ = c; 1381 break; 1382 1383 default: 1384 if (ISALPHA (c)) 1385 { 1386 *rx++ = '['; 1387 *rx++ = TOLOWER (c); 1388 *rx++ = TOUPPER (c); 1389 *rx++ = ']'; 1390 } 1391 else 1392 *rx++ = c; 1393 break; 1394 } 1395 } 1396 else 1397 { 1398 /* Replace non-syntax fields with globs. */ 1399 *rx++ = '.'; 1400 *rx++ = '*'; 1401 } 1402 } 1403 1404 /* Trailing whitespace ok. */ 1405 * rx++ = '['; 1406 * rx++ = ' '; 1407 * rx++ = '\t'; 1408 * rx++ = ']'; 1409 * rx++ = '*'; 1410 1411 /* But anchor it after that. */ 1412 * rx++ = '$'; 1413 * rx = '\0'; 1414 1415 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); 1416 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); 1417 1418 if (reg_err == 0) 1419 return NULL; 1420 else 1421 { 1422 static char msg[80]; 1423 1424 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); 1425 regfree ((regex_t *) CGEN_INSN_RX (insn)); 1426 free (CGEN_INSN_RX (insn)); 1427 (CGEN_INSN_RX (insn)) = NULL; 1428 return msg; 1429 } 1430 } 1431 1432 1433 /* Default insn parser. 1434 1435 The syntax string is scanned and operands are parsed and stored in FIELDS. 1436 Relocs are queued as we go via other callbacks. 1437 1438 ??? Note that this is currently an all-or-nothing parser. If we fail to 1439 parse the instruction, we return 0 and the caller will start over from 1440 the beginning. Backtracking will be necessary in parsing subexpressions, 1441 but that can be handled there. Not handling backtracking here may get 1442 expensive in the case of the m68k. Deal with later. 1443 1444 Returns NULL for success, an error message for failure. */ 1445 1446 static const char * 1447 parse_insn_normal (CGEN_CPU_DESC cd, 1448 const CGEN_INSN *insn, 1449 const char **strp, 1450 CGEN_FIELDS *fields) 1451 { 1452 /* ??? Runtime added insns not handled yet. */ 1453 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 1454 const char *str = *strp; 1455 const char *errmsg; 1456 const char *p; 1457 const CGEN_SYNTAX_CHAR_TYPE * syn; 1458 #ifdef CGEN_MNEMONIC_OPERANDS 1459 /* FIXME: wip */ 1460 int past_opcode_p; 1461 #endif 1462 1463 /* For now we assume the mnemonic is first (there are no leading operands). 1464 We can parse it without needing to set up operand parsing. 1465 GAS's input scrubber will ensure mnemonics are lowercase, but we may 1466 not be called from GAS. */ 1467 p = CGEN_INSN_MNEMONIC (insn); 1468 while (*p && TOLOWER (*p) == TOLOWER (*str)) 1469 ++p, ++str; 1470 1471 if (* p) 1472 return _("unrecognized instruction"); 1473 1474 #ifndef CGEN_MNEMONIC_OPERANDS 1475 if (* str && ! ISSPACE (* str)) 1476 return _("unrecognized instruction"); 1477 #endif 1478 1479 CGEN_INIT_PARSE (cd); 1480 cgen_init_parse_operand (cd); 1481 #ifdef CGEN_MNEMONIC_OPERANDS 1482 past_opcode_p = 0; 1483 #endif 1484 1485 /* We don't check for (*str != '\0') here because we want to parse 1486 any trailing fake arguments in the syntax string. */ 1487 syn = CGEN_SYNTAX_STRING (syntax); 1488 1489 /* Mnemonics come first for now, ensure valid string. */ 1490 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 1491 abort (); 1492 1493 ++syn; 1494 1495 while (* syn != 0) 1496 { 1497 /* Non operand chars must match exactly. */ 1498 if (CGEN_SYNTAX_CHAR_P (* syn)) 1499 { 1500 /* FIXME: While we allow for non-GAS callers above, we assume the 1501 first char after the mnemonic part is a space. */ 1502 /* FIXME: We also take inappropriate advantage of the fact that 1503 GAS's input scrubber will remove extraneous blanks. */ 1504 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) 1505 { 1506 #ifdef CGEN_MNEMONIC_OPERANDS 1507 if (CGEN_SYNTAX_CHAR(* syn) == ' ') 1508 past_opcode_p = 1; 1509 #endif 1510 ++ syn; 1511 ++ str; 1512 } 1513 else if (*str) 1514 { 1515 /* Syntax char didn't match. Can't be this insn. */ 1516 static char msg [80]; 1517 1518 /* xgettext:c-format */ 1519 sprintf (msg, _("syntax error (expected char `%c', found `%c')"), 1520 CGEN_SYNTAX_CHAR(*syn), *str); 1521 return msg; 1522 } 1523 else 1524 { 1525 /* Ran out of input. */ 1526 static char msg [80]; 1527 1528 /* xgettext:c-format */ 1529 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), 1530 CGEN_SYNTAX_CHAR(*syn)); 1531 return msg; 1532 } 1533 continue; 1534 } 1535 1536 #ifdef CGEN_MNEMONIC_OPERANDS 1537 (void) past_opcode_p; 1538 #endif 1539 /* We have an operand of some sort. */ 1540 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields); 1541 if (errmsg) 1542 return errmsg; 1543 1544 /* Done with this operand, continue with next one. */ 1545 ++ syn; 1546 } 1547 1548 /* If we're at the end of the syntax string, we're done. */ 1549 if (* syn == 0) 1550 { 1551 /* FIXME: For the moment we assume a valid `str' can only contain 1552 blanks now. IE: We needn't try again with a longer version of 1553 the insn and it is assumed that longer versions of insns appear 1554 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ 1555 while (ISSPACE (* str)) 1556 ++ str; 1557 1558 if (* str != '\0') 1559 return _("junk at end of line"); /* FIXME: would like to include `str' */ 1560 1561 return NULL; 1562 } 1563 1564 /* We couldn't parse it. */ 1565 return _("unrecognized instruction"); 1566 } 1567 1568 /* Main entry point. 1569 This routine is called for each instruction to be assembled. 1570 STR points to the insn to be assembled. 1571 We assume all necessary tables have been initialized. 1572 The assembled instruction, less any fixups, is stored in BUF. 1573 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value 1574 still needs to be converted to target byte order, otherwise BUF is an array 1575 of bytes in target byte order. 1576 The result is a pointer to the insn's entry in the opcode table, 1577 or NULL if an error occured (an error message will have already been 1578 printed). 1579 1580 Note that when processing (non-alias) macro-insns, 1581 this function recurses. 1582 1583 ??? It's possible to make this cpu-independent. 1584 One would have to deal with a few minor things. 1585 At this point in time doing so would be more of a curiosity than useful 1586 [for example this file isn't _that_ big], but keeping the possibility in 1587 mind helps keep the design clean. */ 1588 1589 const CGEN_INSN * 1590 mep_cgen_assemble_insn (CGEN_CPU_DESC cd, 1591 const char *str, 1592 CGEN_FIELDS *fields, 1593 CGEN_INSN_BYTES_PTR buf, 1594 char **errmsg) 1595 { 1596 const char *start; 1597 CGEN_INSN_LIST *ilist; 1598 const char *parse_errmsg = NULL; 1599 const char *insert_errmsg = NULL; 1600 int recognized_mnemonic = 0; 1601 1602 /* Skip leading white space. */ 1603 while (ISSPACE (* str)) 1604 ++ str; 1605 1606 /* The instructions are stored in hashed lists. 1607 Get the first in the list. */ 1608 ilist = CGEN_ASM_LOOKUP_INSN (cd, str); 1609 1610 /* Keep looking until we find a match. */ 1611 start = str; 1612 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) 1613 { 1614 const CGEN_INSN *insn = ilist->insn; 1615 recognized_mnemonic = 1; 1616 1617 #ifdef CGEN_VALIDATE_INSN_SUPPORTED 1618 /* Not usually needed as unsupported opcodes 1619 shouldn't be in the hash lists. */ 1620 /* Is this insn supported by the selected cpu? */ 1621 if (! mep_cgen_insn_supported (cd, insn)) 1622 continue; 1623 #endif 1624 /* If the RELAXED attribute is set, this is an insn that shouldn't be 1625 chosen immediately. Instead, it is used during assembler/linker 1626 relaxation if possible. */ 1627 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) 1628 continue; 1629 1630 str = start; 1631 1632 /* Skip this insn if str doesn't look right lexically. */ 1633 if (CGEN_INSN_RX (insn) != NULL && 1634 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) 1635 continue; 1636 1637 /* Allow parse/insert handlers to obtain length of insn. */ 1638 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 1639 1640 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); 1641 if (parse_errmsg != NULL) 1642 continue; 1643 1644 /* ??? 0 is passed for `pc'. */ 1645 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, 1646 (bfd_vma) 0); 1647 if (insert_errmsg != NULL) 1648 continue; 1649 1650 /* It is up to the caller to actually output the insn and any 1651 queued relocs. */ 1652 return insn; 1653 } 1654 1655 { 1656 static char errbuf[150]; 1657 const char *tmp_errmsg; 1658 #ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS 1659 #define be_verbose 1 1660 #else 1661 #define be_verbose 0 1662 #endif 1663 1664 if (be_verbose) 1665 { 1666 /* If requesting verbose error messages, use insert_errmsg. 1667 Failing that, use parse_errmsg. */ 1668 tmp_errmsg = (insert_errmsg ? insert_errmsg : 1669 parse_errmsg ? parse_errmsg : 1670 recognized_mnemonic ? 1671 _("unrecognized form of instruction") : 1672 _("unrecognized instruction")); 1673 1674 if (strlen (start) > 50) 1675 /* xgettext:c-format */ 1676 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); 1677 else 1678 /* xgettext:c-format */ 1679 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); 1680 } 1681 else 1682 { 1683 if (strlen (start) > 50) 1684 /* xgettext:c-format */ 1685 sprintf (errbuf, _("bad instruction `%.50s...'"), start); 1686 else 1687 /* xgettext:c-format */ 1688 sprintf (errbuf, _("bad instruction `%.50s'"), start); 1689 } 1690 1691 *errmsg = errbuf; 1692 return NULL; 1693 } 1694 } 1695