1/* DO NOT EDIT! -*- buffer-read-only: t -*- vi:set ro: */ 2/* Assembler interface for targets using CGEN. -*- C -*- 3 CGEN: Cpu tools GENerator 4 5 THIS FILE IS MACHINE GENERATED WITH CGEN. 6 - the resultant file is machine generated, cgen-asm.in isn't 7 8 Copyright (C) 1996-2022 Free Software Foundation, Inc. 9 10 This file is part of libopcodes. 11 12 This library is free software; you can redistribute it and/or modify 13 it under the terms of the GNU General Public License as published by 14 the Free Software Foundation; either version 3, or (at your option) 15 any later version. 16 17 It is distributed in the hope that it will be useful, but WITHOUT 18 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 19 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 20 License for more details. 21 22 You should have received a copy of the GNU General Public License 23 along with this program; if not, write to the Free Software Foundation, Inc., 24 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 25 26 27/* ??? Eventually more and more of this stuff can go to cpu-independent files. 28 Keep that in mind. */ 29 30#include "sysdep.h" 31#include <stdio.h> 32#include "ansidecl.h" 33#include "bfd.h" 34#include "symcat.h" 35#include "mt-desc.h" 36#include "mt-opc.h" 37#include "opintl.h" 38#include "xregex.h" 39#include "libiberty.h" 40#include "safe-ctype.h" 41 42#undef min 43#define min(a,b) ((a) < (b) ? (a) : (b)) 44#undef max 45#define max(a,b) ((a) > (b) ? (a) : (b)) 46 47static const char * parse_insn_normal 48 (CGEN_CPU_DESC, const CGEN_INSN *, const char **, CGEN_FIELDS *); 49 50/* -- assembler routines inserted here. */ 51 52/* -- asm.c */ 53/* Range checking for signed numbers. Returns 0 if acceptable 54 and 1 if the value is out of bounds for a signed quantity. */ 55 56static int 57signed_out_of_bounds (long val) 58{ 59 if ((val < -32768) || (val > 32767)) 60 return 1; 61 return 0; 62} 63 64static const char * 65parse_loopsize (CGEN_CPU_DESC cd, 66 const char **strp, 67 int opindex, 68 void *arg) 69{ 70 signed long * valuep = (signed long *) arg; 71 const char *errmsg; 72 bfd_reloc_code_real_type code = BFD_RELOC_NONE; 73 enum cgen_parse_operand_result result_type; 74 bfd_vma value; 75 76 /* Is it a control transfer instructions? */ 77 if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_LOOPSIZE) 78 { 79 code = BFD_RELOC_MT_PCINSN8; 80 errmsg = cgen_parse_address (cd, strp, opindex, code, 81 & result_type, & value); 82 *valuep = value; 83 return errmsg; 84 } 85 86 abort (); 87} 88 89static const char * 90parse_imm16 (CGEN_CPU_DESC cd, 91 const char **strp, 92 int opindex, 93 void *arg) 94{ 95 signed long * valuep = (signed long *) arg; 96 const char *errmsg; 97 enum cgen_parse_operand_result result_type; 98 bfd_reloc_code_real_type code = BFD_RELOC_NONE; 99 bfd_vma value; 100 101 /* Is it a control transfer instructions? */ 102 if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16O) 103 { 104 code = BFD_RELOC_16_PCREL; 105 errmsg = cgen_parse_address (cd, strp, opindex, code, 106 & result_type, & value); 107 if (errmsg == NULL) 108 { 109 if (signed_out_of_bounds (value)) 110 errmsg = _("Operand out of range. Must be between -32768 and 32767."); 111 } 112 *valuep = value; 113 return errmsg; 114 } 115 116 /* If it's not a control transfer instruction, then 117 we have to check for %OP relocating operators. */ 118 if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16L) 119 ; 120 else if (strncmp (*strp, "%hi16", 5) == 0) 121 { 122 *strp += 5; 123 code = BFD_RELOC_HI16; 124 } 125 else if (strncmp (*strp, "%lo16", 5) == 0) 126 { 127 *strp += 5; 128 code = BFD_RELOC_LO16; 129 } 130 131 /* If we found a %OP relocating operator, then parse it as an address. 132 If not, we need to parse it as an integer, either signed or unsigned 133 depending on which operand type we have. */ 134 if (code != BFD_RELOC_NONE) 135 { 136 /* %OP relocating operator found. */ 137 errmsg = cgen_parse_address (cd, strp, opindex, code, 138 & result_type, & value); 139 if (errmsg == NULL) 140 { 141 switch (result_type) 142 { 143 case (CGEN_PARSE_OPERAND_RESULT_NUMBER): 144 if (code == BFD_RELOC_HI16) 145 value = (value >> 16) & 0xFFFF; 146 else if (code == BFD_RELOC_LO16) 147 value = value & 0xFFFF; 148 else 149 errmsg = _("Biiiig Trouble in parse_imm16!"); 150 break; 151 152 case (CGEN_PARSE_OPERAND_RESULT_QUEUED): 153 /* No special processing for this case. */ 154 break; 155 156 default: 157 errmsg = _("The percent-operator's operand is not a symbol"); 158 break; 159 } 160 } 161 *valuep = value; 162 } 163 else 164 { 165 /* Parse hex values like 0xffff as unsigned, and sign extend 166 them manually. */ 167 int parse_signed = (opindex == (CGEN_OPERAND_TYPE)MT_OPERAND_IMM16); 168 169 if ((*strp)[0] == '0' 170 && ((*strp)[1] == 'x' || (*strp)[1] == 'X')) 171 parse_signed = 0; 172 173 /* No relocating operator. Parse as an number. */ 174 if (parse_signed) 175 { 176 /* Parse as as signed integer. */ 177 178 errmsg = cgen_parse_signed_integer (cd, strp, opindex, valuep); 179 180 if (errmsg == NULL) 181 { 182#if 0 183 /* Manual range checking is needed for the signed case. */ 184 if (*valuep & 0x8000) 185 value = 0xffff0000 | *valuep; 186 else 187 value = *valuep; 188 189 if (signed_out_of_bounds (value)) 190 errmsg = _("Operand out of range. Must be between -32768 and 32767."); 191 /* Truncate to 16 bits. This is necessary 192 because cgen will have sign extended *valuep. */ 193 *valuep &= 0xFFFF; 194#endif 195 } 196 } 197 else 198 { 199 /* MT_OPERAND_IMM16Z. Parse as an unsigned integer. */ 200 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, (unsigned long *) valuep); 201 202 if (opindex == (CGEN_OPERAND_TYPE) MT_OPERAND_IMM16 203 && *valuep >= 0x8000 204 && *valuep <= 0xffff) 205 *valuep -= 0x10000; 206 } 207 } 208 209 return errmsg; 210} 211 212 213static const char * 214parse_dup (CGEN_CPU_DESC cd, 215 const char **strp, 216 int opindex, 217 unsigned long *valuep) 218{ 219 const char *errmsg = NULL; 220 221 if (strncmp (*strp, "dup", 3) == 0 || strncmp (*strp, "DUP", 3) == 0) 222 { 223 *strp += 3; 224 *valuep = 1; 225 } 226 else if (strncmp (*strp, "xx", 2) == 0 || strncmp (*strp, "XX", 2) == 0) 227 { 228 *strp += 2; 229 *valuep = 0; 230 } 231 else 232 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); 233 234 return errmsg; 235} 236 237 238static const char * 239parse_ball (CGEN_CPU_DESC cd, 240 const char **strp, 241 int opindex, 242 unsigned long *valuep) 243{ 244 const char *errmsg = NULL; 245 246 if (strncmp (*strp, "all", 3) == 0 || strncmp (*strp, "ALL", 3) == 0) 247 { 248 *strp += 3; 249 *valuep = 1; 250 } 251 else if (strncmp (*strp, "one", 3) == 0 || strncmp (*strp, "ONE", 3) == 0) 252 { 253 *strp += 3; 254 *valuep = 0; 255 } 256 else 257 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); 258 259 return errmsg; 260} 261 262static const char * 263parse_xmode (CGEN_CPU_DESC cd, 264 const char **strp, 265 int opindex, 266 unsigned long *valuep) 267{ 268 const char *errmsg = NULL; 269 270 if (strncmp (*strp, "pm", 2) == 0 || strncmp (*strp, "PM", 2) == 0) 271 { 272 *strp += 2; 273 *valuep = 1; 274 } 275 else if (strncmp (*strp, "xm", 2) == 0 || strncmp (*strp, "XM", 2) == 0) 276 { 277 *strp += 2; 278 *valuep = 0; 279 } 280 else 281 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); 282 283 return errmsg; 284} 285 286static const char * 287parse_rc (CGEN_CPU_DESC cd, 288 const char **strp, 289 int opindex, 290 unsigned long *valuep) 291{ 292 const char *errmsg = NULL; 293 294 if (strncmp (*strp, "r", 1) == 0 || strncmp (*strp, "R", 1) == 0) 295 { 296 *strp += 1; 297 *valuep = 1; 298 } 299 else if (strncmp (*strp, "c", 1) == 0 || strncmp (*strp, "C", 1) == 0) 300 { 301 *strp += 1; 302 *valuep = 0; 303 } 304 else 305 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); 306 307 return errmsg; 308} 309 310static const char * 311parse_cbrb (CGEN_CPU_DESC cd, 312 const char **strp, 313 int opindex, 314 unsigned long *valuep) 315{ 316 const char *errmsg = NULL; 317 318 if (strncmp (*strp, "rb", 2) == 0 || strncmp (*strp, "RB", 2) == 0) 319 { 320 *strp += 2; 321 *valuep = 1; 322 } 323 else if (strncmp (*strp, "cb", 2) == 0 || strncmp (*strp, "CB", 2) == 0) 324 { 325 *strp += 2; 326 *valuep = 0; 327 } 328 else 329 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); 330 331 return errmsg; 332} 333 334static const char * 335parse_rbbc (CGEN_CPU_DESC cd, 336 const char **strp, 337 int opindex, 338 unsigned long *valuep) 339{ 340 const char *errmsg = NULL; 341 342 if (strncmp (*strp, "rt", 2) == 0 || strncmp (*strp, "RT", 2) == 0) 343 { 344 *strp += 2; 345 *valuep = 0; 346 } 347 else if (strncmp (*strp, "br1", 3) == 0 || strncmp (*strp, "BR1", 3) == 0) 348 { 349 *strp += 3; 350 *valuep = 1; 351 } 352 else if (strncmp (*strp, "br2", 3) == 0 || strncmp (*strp, "BR2", 3) == 0) 353 { 354 *strp += 3; 355 *valuep = 2; 356 } 357 else if (strncmp (*strp, "cs", 2) == 0 || strncmp (*strp, "CS", 2) == 0) 358 { 359 *strp += 2; 360 *valuep = 3; 361 } 362 else 363 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); 364 365 return errmsg; 366} 367 368static const char * 369parse_type (CGEN_CPU_DESC cd, 370 const char **strp, 371 int opindex, 372 unsigned long *valuep) 373{ 374 const char *errmsg = NULL; 375 376 if (strncmp (*strp, "odd", 3) == 0 || strncmp (*strp, "ODD", 3) == 0) 377 { 378 *strp += 3; 379 *valuep = 0; 380 } 381 else if (strncmp (*strp, "even", 4) == 0 || strncmp (*strp, "EVEN", 4) == 0) 382 { 383 *strp += 4; 384 *valuep = 1; 385 } 386 else if (strncmp (*strp, "oe", 2) == 0 || strncmp (*strp, "OE", 2) == 0) 387 { 388 *strp += 2; 389 *valuep = 2; 390 } 391 else 392 errmsg = cgen_parse_unsigned_integer (cd, strp, opindex, valuep); 393 394 if ((errmsg == NULL) && (*valuep == 3)) 395 errmsg = _("invalid operand. type may have values 0,1,2 only."); 396 397 return errmsg; 398} 399 400/* -- dis.c */ 401 402const char * mt_cgen_parse_operand 403 (CGEN_CPU_DESC, int, const char **, CGEN_FIELDS *); 404 405/* Main entry point for operand parsing. 406 407 This function is basically just a big switch statement. Earlier versions 408 used tables to look up the function to use, but 409 - if the table contains both assembler and disassembler functions then 410 the disassembler contains much of the assembler and vice-versa, 411 - there's a lot of inlining possibilities as things grow, 412 - using a switch statement avoids the function call overhead. 413 414 This function could be moved into `parse_insn_normal', but keeping it 415 separate makes clear the interface between `parse_insn_normal' and each of 416 the handlers. */ 417 418const char * 419mt_cgen_parse_operand (CGEN_CPU_DESC cd, 420 int opindex, 421 const char ** strp, 422 CGEN_FIELDS * fields) 423{ 424 const char * errmsg = NULL; 425 /* Used by scalar operands that still need to be parsed. */ 426 long junk ATTRIBUTE_UNUSED; 427 428 switch (opindex) 429 { 430 case MT_OPERAND_A23 : 431 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_A23, (unsigned long *) (& fields->f_a23)); 432 break; 433 case MT_OPERAND_BALL : 434 errmsg = parse_ball (cd, strp, MT_OPERAND_BALL, (unsigned long *) (& fields->f_ball)); 435 break; 436 case MT_OPERAND_BALL2 : 437 errmsg = parse_ball (cd, strp, MT_OPERAND_BALL2, (unsigned long *) (& fields->f_ball2)); 438 break; 439 case MT_OPERAND_BANKADDR : 440 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BANKADDR, (unsigned long *) (& fields->f_bankaddr)); 441 break; 442 case MT_OPERAND_BRC : 443 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BRC, (unsigned long *) (& fields->f_brc)); 444 break; 445 case MT_OPERAND_BRC2 : 446 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_BRC2, (unsigned long *) (& fields->f_brc2)); 447 break; 448 case MT_OPERAND_CB1INCR : 449 errmsg = cgen_parse_signed_integer (cd, strp, MT_OPERAND_CB1INCR, (long *) (& fields->f_cb1incr)); 450 break; 451 case MT_OPERAND_CB1SEL : 452 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CB1SEL, (unsigned long *) (& fields->f_cb1sel)); 453 break; 454 case MT_OPERAND_CB2INCR : 455 errmsg = cgen_parse_signed_integer (cd, strp, MT_OPERAND_CB2INCR, (long *) (& fields->f_cb2incr)); 456 break; 457 case MT_OPERAND_CB2SEL : 458 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CB2SEL, (unsigned long *) (& fields->f_cb2sel)); 459 break; 460 case MT_OPERAND_CBRB : 461 errmsg = parse_cbrb (cd, strp, MT_OPERAND_CBRB, (unsigned long *) (& fields->f_cbrb)); 462 break; 463 case MT_OPERAND_CBS : 464 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CBS, (unsigned long *) (& fields->f_cbs)); 465 break; 466 case MT_OPERAND_CBX : 467 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CBX, (unsigned long *) (& fields->f_cbx)); 468 break; 469 case MT_OPERAND_CCB : 470 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CCB, (unsigned long *) (& fields->f_ccb)); 471 break; 472 case MT_OPERAND_CDB : 473 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CDB, (unsigned long *) (& fields->f_cdb)); 474 break; 475 case MT_OPERAND_CELL : 476 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CELL, (unsigned long *) (& fields->f_cell)); 477 break; 478 case MT_OPERAND_COLNUM : 479 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_COLNUM, (unsigned long *) (& fields->f_colnum)); 480 break; 481 case MT_OPERAND_CONTNUM : 482 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CONTNUM, (unsigned long *) (& fields->f_contnum)); 483 break; 484 case MT_OPERAND_CR : 485 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CR, (unsigned long *) (& fields->f_cr)); 486 break; 487 case MT_OPERAND_CTXDISP : 488 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_CTXDISP, (unsigned long *) (& fields->f_ctxdisp)); 489 break; 490 case MT_OPERAND_DUP : 491 errmsg = parse_dup (cd, strp, MT_OPERAND_DUP, (unsigned long *) (& fields->f_dup)); 492 break; 493 case MT_OPERAND_FBDISP : 494 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_FBDISP, (unsigned long *) (& fields->f_fbdisp)); 495 break; 496 case MT_OPERAND_FBINCR : 497 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_FBINCR, (unsigned long *) (& fields->f_fbincr)); 498 break; 499 case MT_OPERAND_FRDR : 500 errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_dr); 501 break; 502 case MT_OPERAND_FRDRRR : 503 errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_drrr); 504 break; 505 case MT_OPERAND_FRSR1 : 506 errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_sr1); 507 break; 508 case MT_OPERAND_FRSR2 : 509 errmsg = cgen_parse_keyword (cd, strp, & mt_cgen_opval_h_spr, & fields->f_sr2); 510 break; 511 case MT_OPERAND_ID : 512 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ID, (unsigned long *) (& fields->f_id)); 513 break; 514 case MT_OPERAND_IMM16 : 515 errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16, (long *) (& fields->f_imm16s)); 516 break; 517 case MT_OPERAND_IMM16L : 518 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_IMM16L, (unsigned long *) (& fields->f_imm16l)); 519 break; 520 case MT_OPERAND_IMM16O : 521 errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16O, (unsigned long *) (& fields->f_imm16s)); 522 break; 523 case MT_OPERAND_IMM16Z : 524 errmsg = parse_imm16 (cd, strp, MT_OPERAND_IMM16Z, (unsigned long *) (& fields->f_imm16u)); 525 break; 526 case MT_OPERAND_INCAMT : 527 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_INCAMT, (unsigned long *) (& fields->f_incamt)); 528 break; 529 case MT_OPERAND_INCR : 530 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_INCR, (unsigned long *) (& fields->f_incr)); 531 break; 532 case MT_OPERAND_LENGTH : 533 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_LENGTH, (unsigned long *) (& fields->f_length)); 534 break; 535 case MT_OPERAND_LOOPSIZE : 536 errmsg = parse_loopsize (cd, strp, MT_OPERAND_LOOPSIZE, (unsigned long *) (& fields->f_loopo)); 537 break; 538 case MT_OPERAND_MASK : 539 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MASK, (unsigned long *) (& fields->f_mask)); 540 break; 541 case MT_OPERAND_MASK1 : 542 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MASK1, (unsigned long *) (& fields->f_mask1)); 543 break; 544 case MT_OPERAND_MODE : 545 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_MODE, (unsigned long *) (& fields->f_mode)); 546 break; 547 case MT_OPERAND_PERM : 548 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_PERM, (unsigned long *) (& fields->f_perm)); 549 break; 550 case MT_OPERAND_RBBC : 551 errmsg = parse_rbbc (cd, strp, MT_OPERAND_RBBC, (unsigned long *) (& fields->f_rbbc)); 552 break; 553 case MT_OPERAND_RC : 554 errmsg = parse_rc (cd, strp, MT_OPERAND_RC, (unsigned long *) (& fields->f_rc)); 555 break; 556 case MT_OPERAND_RC1 : 557 errmsg = parse_rc (cd, strp, MT_OPERAND_RC1, (unsigned long *) (& fields->f_rc1)); 558 break; 559 case MT_OPERAND_RC2 : 560 errmsg = parse_rc (cd, strp, MT_OPERAND_RC2, (unsigned long *) (& fields->f_rc2)); 561 break; 562 case MT_OPERAND_RC3 : 563 errmsg = parse_rc (cd, strp, MT_OPERAND_RC3, (unsigned long *) (& fields->f_rc3)); 564 break; 565 case MT_OPERAND_RCNUM : 566 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_RCNUM, (unsigned long *) (& fields->f_rcnum)); 567 break; 568 case MT_OPERAND_RDA : 569 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_RDA, (unsigned long *) (& fields->f_rda)); 570 break; 571 case MT_OPERAND_ROWNUM : 572 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM, (unsigned long *) (& fields->f_rownum)); 573 break; 574 case MT_OPERAND_ROWNUM1 : 575 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM1, (unsigned long *) (& fields->f_rownum1)); 576 break; 577 case MT_OPERAND_ROWNUM2 : 578 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_ROWNUM2, (unsigned long *) (& fields->f_rownum2)); 579 break; 580 case MT_OPERAND_SIZE : 581 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_SIZE, (unsigned long *) (& fields->f_size)); 582 break; 583 case MT_OPERAND_TYPE : 584 errmsg = parse_type (cd, strp, MT_OPERAND_TYPE, (unsigned long *) (& fields->f_type)); 585 break; 586 case MT_OPERAND_WR : 587 errmsg = cgen_parse_unsigned_integer (cd, strp, MT_OPERAND_WR, (unsigned long *) (& fields->f_wr)); 588 break; 589 case MT_OPERAND_XMODE : 590 errmsg = parse_xmode (cd, strp, MT_OPERAND_XMODE, (unsigned long *) (& fields->f_xmode)); 591 break; 592 593 default : 594 /* xgettext:c-format */ 595 opcodes_error_handler 596 (_("internal error: unrecognized field %d while parsing"), 597 opindex); 598 abort (); 599 } 600 601 return errmsg; 602} 603 604cgen_parse_fn * const mt_cgen_parse_handlers[] = 605{ 606 parse_insn_normal, 607}; 608 609void 610mt_cgen_init_asm (CGEN_CPU_DESC cd) 611{ 612 mt_cgen_init_opcode_table (cd); 613 mt_cgen_init_ibld_table (cd); 614 cd->parse_handlers = & mt_cgen_parse_handlers[0]; 615 cd->parse_operand = mt_cgen_parse_operand; 616#ifdef CGEN_ASM_INIT_HOOK 617CGEN_ASM_INIT_HOOK 618#endif 619} 620 621 622 623/* Regex construction routine. 624 625 This translates an opcode syntax string into a regex string, 626 by replacing any non-character syntax element (such as an 627 opcode) with the pattern '.*' 628 629 It then compiles the regex and stores it in the opcode, for 630 later use by mt_cgen_assemble_insn 631 632 Returns NULL for success, an error message for failure. */ 633 634char * 635mt_cgen_build_insn_regex (CGEN_INSN *insn) 636{ 637 CGEN_OPCODE *opc = (CGEN_OPCODE *) CGEN_INSN_OPCODE (insn); 638 const char *mnem = CGEN_INSN_MNEMONIC (insn); 639 char rxbuf[CGEN_MAX_RX_ELEMENTS]; 640 char *rx = rxbuf; 641 const CGEN_SYNTAX_CHAR_TYPE *syn; 642 int reg_err; 643 644 syn = CGEN_SYNTAX_STRING (CGEN_OPCODE_SYNTAX (opc)); 645 646 /* Mnemonics come first in the syntax string. */ 647 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 648 return _("missing mnemonic in syntax string"); 649 ++syn; 650 651 /* Generate a case sensitive regular expression that emulates case 652 insensitive matching in the "C" locale. We cannot generate a case 653 insensitive regular expression because in Turkish locales, 'i' and 'I' 654 are not equal modulo case conversion. */ 655 656 /* Copy the literal mnemonic out of the insn. */ 657 for (; *mnem; mnem++) 658 { 659 char c = *mnem; 660 661 if (ISALPHA (c)) 662 { 663 *rx++ = '['; 664 *rx++ = TOLOWER (c); 665 *rx++ = TOUPPER (c); 666 *rx++ = ']'; 667 } 668 else 669 *rx++ = c; 670 } 671 672 /* Copy any remaining literals from the syntax string into the rx. */ 673 for(; * syn != 0 && rx <= rxbuf + (CGEN_MAX_RX_ELEMENTS - 7 - 4); ++syn) 674 { 675 if (CGEN_SYNTAX_CHAR_P (* syn)) 676 { 677 char c = CGEN_SYNTAX_CHAR (* syn); 678 679 switch (c) 680 { 681 /* Escape any regex metacharacters in the syntax. */ 682 case '.': case '[': case '\\': 683 case '*': case '^': case '$': 684 685#ifdef CGEN_ESCAPE_EXTENDED_REGEX 686 case '?': case '{': case '}': 687 case '(': case ')': case '*': 688 case '|': case '+': case ']': 689#endif 690 *rx++ = '\\'; 691 *rx++ = c; 692 break; 693 694 default: 695 if (ISALPHA (c)) 696 { 697 *rx++ = '['; 698 *rx++ = TOLOWER (c); 699 *rx++ = TOUPPER (c); 700 *rx++ = ']'; 701 } 702 else 703 *rx++ = c; 704 break; 705 } 706 } 707 else 708 { 709 /* Replace non-syntax fields with globs. */ 710 *rx++ = '.'; 711 *rx++ = '*'; 712 } 713 } 714 715 /* Trailing whitespace ok. */ 716 * rx++ = '['; 717 * rx++ = ' '; 718 * rx++ = '\t'; 719 * rx++ = ']'; 720 * rx++ = '*'; 721 722 /* But anchor it after that. */ 723 * rx++ = '$'; 724 * rx = '\0'; 725 726 CGEN_INSN_RX (insn) = xmalloc (sizeof (regex_t)); 727 reg_err = regcomp ((regex_t *) CGEN_INSN_RX (insn), rxbuf, REG_NOSUB); 728 729 if (reg_err == 0) 730 return NULL; 731 else 732 { 733 static char msg[80]; 734 735 regerror (reg_err, (regex_t *) CGEN_INSN_RX (insn), msg, 80); 736 regfree ((regex_t *) CGEN_INSN_RX (insn)); 737 free (CGEN_INSN_RX (insn)); 738 (CGEN_INSN_RX (insn)) = NULL; 739 return msg; 740 } 741} 742 743 744/* Default insn parser. 745 746 The syntax string is scanned and operands are parsed and stored in FIELDS. 747 Relocs are queued as we go via other callbacks. 748 749 ??? Note that this is currently an all-or-nothing parser. If we fail to 750 parse the instruction, we return 0 and the caller will start over from 751 the beginning. Backtracking will be necessary in parsing subexpressions, 752 but that can be handled there. Not handling backtracking here may get 753 expensive in the case of the m68k. Deal with later. 754 755 Returns NULL for success, an error message for failure. */ 756 757static const char * 758parse_insn_normal (CGEN_CPU_DESC cd, 759 const CGEN_INSN *insn, 760 const char **strp, 761 CGEN_FIELDS *fields) 762{ 763 /* ??? Runtime added insns not handled yet. */ 764 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 765 const char *str = *strp; 766 const char *errmsg; 767 const char *p; 768 const CGEN_SYNTAX_CHAR_TYPE * syn; 769#ifdef CGEN_MNEMONIC_OPERANDS 770 /* FIXME: wip */ 771 int past_opcode_p; 772#endif 773 774 /* For now we assume the mnemonic is first (there are no leading operands). 775 We can parse it without needing to set up operand parsing. 776 GAS's input scrubber will ensure mnemonics are lowercase, but we may 777 not be called from GAS. */ 778 p = CGEN_INSN_MNEMONIC (insn); 779 while (*p && TOLOWER (*p) == TOLOWER (*str)) 780 ++p, ++str; 781 782 if (* p) 783 return _("unrecognized instruction"); 784 785#ifndef CGEN_MNEMONIC_OPERANDS 786 if (* str && ! ISSPACE (* str)) 787 return _("unrecognized instruction"); 788#endif 789 790 CGEN_INIT_PARSE (cd); 791 cgen_init_parse_operand (cd); 792#ifdef CGEN_MNEMONIC_OPERANDS 793 past_opcode_p = 0; 794#endif 795 796 /* We don't check for (*str != '\0') here because we want to parse 797 any trailing fake arguments in the syntax string. */ 798 syn = CGEN_SYNTAX_STRING (syntax); 799 800 /* Mnemonics come first for now, ensure valid string. */ 801 if (! CGEN_SYNTAX_MNEMONIC_P (* syn)) 802 abort (); 803 804 ++syn; 805 806 while (* syn != 0) 807 { 808 /* Non operand chars must match exactly. */ 809 if (CGEN_SYNTAX_CHAR_P (* syn)) 810 { 811 /* FIXME: While we allow for non-GAS callers above, we assume the 812 first char after the mnemonic part is a space. */ 813 /* FIXME: We also take inappropriate advantage of the fact that 814 GAS's input scrubber will remove extraneous blanks. */ 815 if (TOLOWER (*str) == TOLOWER (CGEN_SYNTAX_CHAR (* syn))) 816 { 817#ifdef CGEN_MNEMONIC_OPERANDS 818 if (CGEN_SYNTAX_CHAR(* syn) == ' ') 819 past_opcode_p = 1; 820#endif 821 ++ syn; 822 ++ str; 823 } 824 else if (*str) 825 { 826 /* Syntax char didn't match. Can't be this insn. */ 827 static char msg [80]; 828 829 /* xgettext:c-format */ 830 sprintf (msg, _("syntax error (expected char `%c', found `%c')"), 831 CGEN_SYNTAX_CHAR(*syn), *str); 832 return msg; 833 } 834 else 835 { 836 /* Ran out of input. */ 837 static char msg [80]; 838 839 /* xgettext:c-format */ 840 sprintf (msg, _("syntax error (expected char `%c', found end of instruction)"), 841 CGEN_SYNTAX_CHAR(*syn)); 842 return msg; 843 } 844 continue; 845 } 846 847#ifdef CGEN_MNEMONIC_OPERANDS 848 (void) past_opcode_p; 849#endif 850 /* We have an operand of some sort. */ 851 errmsg = cd->parse_operand (cd, CGEN_SYNTAX_FIELD (*syn), &str, fields); 852 if (errmsg) 853 return errmsg; 854 855 /* Done with this operand, continue with next one. */ 856 ++ syn; 857 } 858 859 /* If we're at the end of the syntax string, we're done. */ 860 if (* syn == 0) 861 { 862 /* FIXME: For the moment we assume a valid `str' can only contain 863 blanks now. IE: We needn't try again with a longer version of 864 the insn and it is assumed that longer versions of insns appear 865 before shorter ones (eg: lsr r2,r3,1 vs lsr r2,r3). */ 866 while (ISSPACE (* str)) 867 ++ str; 868 869 if (* str != '\0') 870 return _("junk at end of line"); /* FIXME: would like to include `str' */ 871 872 return NULL; 873 } 874 875 /* We couldn't parse it. */ 876 return _("unrecognized instruction"); 877} 878 879/* Main entry point. 880 This routine is called for each instruction to be assembled. 881 STR points to the insn to be assembled. 882 We assume all necessary tables have been initialized. 883 The assembled instruction, less any fixups, is stored in BUF. 884 Remember that if CGEN_INT_INSN_P then BUF is an int and thus the value 885 still needs to be converted to target byte order, otherwise BUF is an array 886 of bytes in target byte order. 887 The result is a pointer to the insn's entry in the opcode table, 888 or NULL if an error occured (an error message will have already been 889 printed). 890 891 Note that when processing (non-alias) macro-insns, 892 this function recurses. 893 894 ??? It's possible to make this cpu-independent. 895 One would have to deal with a few minor things. 896 At this point in time doing so would be more of a curiosity than useful 897 [for example this file isn't _that_ big], but keeping the possibility in 898 mind helps keep the design clean. */ 899 900const CGEN_INSN * 901mt_cgen_assemble_insn (CGEN_CPU_DESC cd, 902 const char *str, 903 CGEN_FIELDS *fields, 904 CGEN_INSN_BYTES_PTR buf, 905 char **errmsg) 906{ 907 const char *start; 908 CGEN_INSN_LIST *ilist; 909 const char *parse_errmsg = NULL; 910 const char *insert_errmsg = NULL; 911 int recognized_mnemonic = 0; 912 913 /* Skip leading white space. */ 914 while (ISSPACE (* str)) 915 ++ str; 916 917 /* The instructions are stored in hashed lists. 918 Get the first in the list. */ 919 ilist = CGEN_ASM_LOOKUP_INSN (cd, str); 920 921 /* Keep looking until we find a match. */ 922 start = str; 923 for ( ; ilist != NULL ; ilist = CGEN_ASM_NEXT_INSN (ilist)) 924 { 925 const CGEN_INSN *insn = ilist->insn; 926 recognized_mnemonic = 1; 927 928#ifdef CGEN_VALIDATE_INSN_SUPPORTED 929 /* Not usually needed as unsupported opcodes 930 shouldn't be in the hash lists. */ 931 /* Is this insn supported by the selected cpu? */ 932 if (! mt_cgen_insn_supported (cd, insn)) 933 continue; 934#endif 935 /* If the RELAXED attribute is set, this is an insn that shouldn't be 936 chosen immediately. Instead, it is used during assembler/linker 937 relaxation if possible. */ 938 if (CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_RELAXED) != 0) 939 continue; 940 941 str = start; 942 943 /* Skip this insn if str doesn't look right lexically. */ 944 if (CGEN_INSN_RX (insn) != NULL && 945 regexec ((regex_t *) CGEN_INSN_RX (insn), str, 0, NULL, 0) == REG_NOMATCH) 946 continue; 947 948 /* Allow parse/insert handlers to obtain length of insn. */ 949 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 950 951 parse_errmsg = CGEN_PARSE_FN (cd, insn) (cd, insn, & str, fields); 952 if (parse_errmsg != NULL) 953 continue; 954 955 /* ??? 0 is passed for `pc'. */ 956 insert_errmsg = CGEN_INSERT_FN (cd, insn) (cd, insn, fields, buf, 957 (bfd_vma) 0); 958 if (insert_errmsg != NULL) 959 continue; 960 961 /* It is up to the caller to actually output the insn and any 962 queued relocs. */ 963 return insn; 964 } 965 966 { 967 static char errbuf[150]; 968 const char *tmp_errmsg; 969#ifdef CGEN_VERBOSE_ASSEMBLER_ERRORS 970#define be_verbose 1 971#else 972#define be_verbose 0 973#endif 974 975 if (be_verbose) 976 { 977 /* If requesting verbose error messages, use insert_errmsg. 978 Failing that, use parse_errmsg. */ 979 tmp_errmsg = (insert_errmsg ? insert_errmsg : 980 parse_errmsg ? parse_errmsg : 981 recognized_mnemonic ? 982 _("unrecognized form of instruction") : 983 _("unrecognized instruction")); 984 985 if (strlen (start) > 50) 986 /* xgettext:c-format */ 987 sprintf (errbuf, "%s `%.50s...'", tmp_errmsg, start); 988 else 989 /* xgettext:c-format */ 990 sprintf (errbuf, "%s `%.50s'", tmp_errmsg, start); 991 } 992 else 993 { 994 if (strlen (start) > 50) 995 /* xgettext:c-format */ 996 sprintf (errbuf, _("bad instruction `%.50s...'"), start); 997 else 998 /* xgettext:c-format */ 999 sprintf (errbuf, _("bad instruction `%.50s'"), start); 1000 } 1001 1002 *errmsg = errbuf; 1003 return NULL; 1004 } 1005} 1006