1 /* Instruction building/extraction support for or1k. -*- C -*- 2 3 THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator. 4 - the resultant file is machine generated, cgen-ibld.in isn't 5 6 Copyright (C) 1996-2014 Free Software Foundation, Inc. 7 8 This file is part of libopcodes. 9 10 This library is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3, or (at your option) 13 any later version. 14 15 It is distributed in the hope that it will be useful, but WITHOUT 16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 17 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 18 License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software Foundation, Inc., 22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 23 24 /* ??? Eventually more and more of this stuff can go to cpu-independent files. 25 Keep that in mind. */ 26 27 #include "sysdep.h" 28 #include <stdio.h> 29 #include "ansidecl.h" 30 #include "dis-asm.h" 31 #include "bfd.h" 32 #include "symcat.h" 33 #include "or1k-desc.h" 34 #include "or1k-opc.h" 35 #include "cgen/basic-modes.h" 36 #include "opintl.h" 37 #include "safe-ctype.h" 38 39 #undef min 40 #define min(a,b) ((a) < (b) ? (a) : (b)) 41 #undef max 42 #define max(a,b) ((a) > (b) ? (a) : (b)) 43 44 /* Used by the ifield rtx function. */ 45 #define FLD(f) (fields->f) 46 47 static const char * insert_normal 48 (CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int, 49 unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR); 50 static const char * insert_insn_normal 51 (CGEN_CPU_DESC, const CGEN_INSN *, 52 CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma); 53 static int extract_normal 54 (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, 55 unsigned int, unsigned int, unsigned int, unsigned int, 56 unsigned int, unsigned int, bfd_vma, long *); 57 static int extract_insn_normal 58 (CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *, 59 CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); 60 #if CGEN_INT_INSN_P 61 static void put_insn_int_value 62 (CGEN_CPU_DESC, CGEN_INSN_BYTES_PTR, int, int, CGEN_INSN_INT); 63 #endif 64 #if ! CGEN_INT_INSN_P 65 static CGEN_INLINE void insert_1 66 (CGEN_CPU_DESC, unsigned long, int, int, int, unsigned char *); 67 static CGEN_INLINE int fill_cache 68 (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, bfd_vma); 69 static CGEN_INLINE long extract_1 70 (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, int, unsigned char *, bfd_vma); 71 #endif 72 73 /* Operand insertion. */ 75 76 #if ! CGEN_INT_INSN_P 77 78 /* Subroutine of insert_normal. */ 79 80 static CGEN_INLINE void 81 insert_1 (CGEN_CPU_DESC cd, 82 unsigned long value, 83 int start, 84 int length, 85 int word_length, 86 unsigned char *bufp) 87 { 88 unsigned long x,mask; 89 int shift; 90 91 x = cgen_get_insn_value (cd, bufp, word_length); 92 93 /* Written this way to avoid undefined behaviour. */ 94 mask = (((1L << (length - 1)) - 1) << 1) | 1; 95 if (CGEN_INSN_LSB0_P) 96 shift = (start + 1) - length; 97 else 98 shift = (word_length - (start + length)); 99 x = (x & ~(mask << shift)) | ((value & mask) << shift); 100 101 cgen_put_insn_value (cd, bufp, word_length, (bfd_vma) x); 102 } 103 104 #endif /* ! CGEN_INT_INSN_P */ 105 106 /* Default insertion routine. 107 108 ATTRS is a mask of the boolean attributes. 109 WORD_OFFSET is the offset in bits from the start of the insn of the value. 110 WORD_LENGTH is the length of the word in bits in which the value resides. 111 START is the starting bit number in the word, architecture origin. 112 LENGTH is the length of VALUE in bits. 113 TOTAL_LENGTH is the total length of the insn in bits. 114 115 The result is an error message or NULL if success. */ 116 117 /* ??? This duplicates functionality with bfd's howto table and 118 bfd_install_relocation. */ 119 /* ??? This doesn't handle bfd_vma's. Create another function when 120 necessary. */ 121 122 static const char * 123 insert_normal (CGEN_CPU_DESC cd, 124 long value, 125 unsigned int attrs, 126 unsigned int word_offset, 127 unsigned int start, 128 unsigned int length, 129 unsigned int word_length, 130 unsigned int total_length, 131 CGEN_INSN_BYTES_PTR buffer) 132 { 133 static char errbuf[100]; 134 /* Written this way to avoid undefined behaviour. */ 135 unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1; 136 137 /* If LENGTH is zero, this operand doesn't contribute to the value. */ 138 if (length == 0) 139 return NULL; 140 141 if (word_length > 8 * sizeof (CGEN_INSN_INT)) 142 abort (); 143 144 /* For architectures with insns smaller than the base-insn-bitsize, 145 word_length may be too big. */ 146 if (cd->min_insn_bitsize < cd->base_insn_bitsize) 147 { 148 if (word_offset == 0 149 && word_length > total_length) 150 word_length = total_length; 151 } 152 153 /* Ensure VALUE will fit. */ 154 if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGN_OPT)) 155 { 156 long minval = - (1L << (length - 1)); 157 unsigned long maxval = mask; 158 159 if ((value > 0 && (unsigned long) value > maxval) 160 || value < minval) 161 { 162 /* xgettext:c-format */ 163 sprintf (errbuf, 164 _("operand out of range (%ld not between %ld and %lu)"), 165 value, minval, maxval); 166 return errbuf; 167 } 168 } 169 else if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)) 170 { 171 unsigned long maxval = mask; 172 unsigned long val = (unsigned long) value; 173 174 /* For hosts with a word size > 32 check to see if value has been sign 175 extended beyond 32 bits. If so then ignore these higher sign bits 176 as the user is attempting to store a 32-bit signed value into an 177 unsigned 32-bit field which is allowed. */ 178 if (sizeof (unsigned long) > 4 && ((value >> 32) == -1)) 179 val &= 0xFFFFFFFF; 180 181 if (val > maxval) 182 { 183 /* xgettext:c-format */ 184 sprintf (errbuf, 185 _("operand out of range (0x%lx not between 0 and 0x%lx)"), 186 val, maxval); 187 return errbuf; 188 } 189 } 190 else 191 { 192 if (! cgen_signed_overflow_ok_p (cd)) 193 { 194 long minval = - (1L << (length - 1)); 195 long maxval = (1L << (length - 1)) - 1; 196 197 if (value < minval || value > maxval) 198 { 199 sprintf 200 /* xgettext:c-format */ 201 (errbuf, _("operand out of range (%ld not between %ld and %ld)"), 202 value, minval, maxval); 203 return errbuf; 204 } 205 } 206 } 207 208 #if CGEN_INT_INSN_P 209 210 { 211 int shift; 212 213 if (CGEN_INSN_LSB0_P) 214 shift = (word_offset + start + 1) - length; 215 else 216 shift = total_length - (word_offset + start + length); 217 *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift); 218 } 219 220 #else /* ! CGEN_INT_INSN_P */ 221 222 { 223 unsigned char *bufp = (unsigned char *) buffer + word_offset / 8; 224 225 insert_1 (cd, value, start, length, word_length, bufp); 226 } 227 228 #endif /* ! CGEN_INT_INSN_P */ 229 230 return NULL; 231 } 232 233 /* Default insn builder (insert handler). 234 The instruction is recorded in CGEN_INT_INSN_P byte order (meaning 235 that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is 236 recorded in host byte order, otherwise BUFFER is an array of bytes 237 and the value is recorded in target byte order). 238 The result is an error message or NULL if success. */ 239 240 static const char * 241 insert_insn_normal (CGEN_CPU_DESC cd, 242 const CGEN_INSN * insn, 243 CGEN_FIELDS * fields, 244 CGEN_INSN_BYTES_PTR buffer, 245 bfd_vma pc) 246 { 247 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 248 unsigned long value; 249 const CGEN_SYNTAX_CHAR_TYPE * syn; 250 251 CGEN_INIT_INSERT (cd); 252 value = CGEN_INSN_BASE_VALUE (insn); 253 254 /* If we're recording insns as numbers (rather than a string of bytes), 255 target byte order handling is deferred until later. */ 256 257 #if CGEN_INT_INSN_P 258 259 put_insn_int_value (cd, buffer, cd->base_insn_bitsize, 260 CGEN_FIELDS_BITSIZE (fields), value); 261 262 #else 263 264 cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize, 265 (unsigned) CGEN_FIELDS_BITSIZE (fields)), 266 value); 267 268 #endif /* ! CGEN_INT_INSN_P */ 269 270 /* ??? It would be better to scan the format's fields. 271 Still need to be able to insert a value based on the operand though; 272 e.g. storing a branch displacement that got resolved later. 273 Needs more thought first. */ 274 275 for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn) 276 { 277 const char *errmsg; 278 279 if (CGEN_SYNTAX_CHAR_P (* syn)) 280 continue; 281 282 errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn), 283 fields, buffer, pc); 284 if (errmsg) 285 return errmsg; 286 } 287 288 return NULL; 289 } 290 291 #if CGEN_INT_INSN_P 292 /* Cover function to store an insn value into an integral insn. Must go here 293 because it needs <prefix>-desc.h for CGEN_INT_INSN_P. */ 294 295 static void 296 put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 297 CGEN_INSN_BYTES_PTR buf, 298 int length, 299 int insn_length, 300 CGEN_INSN_INT value) 301 { 302 /* For architectures with insns smaller than the base-insn-bitsize, 303 length may be too big. */ 304 if (length > insn_length) 305 *buf = value; 306 else 307 { 308 int shift = insn_length - length; 309 /* Written this way to avoid undefined behaviour. */ 310 CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1; 311 312 *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift); 313 } 314 } 315 #endif 316 317 /* Operand extraction. */ 319 320 #if ! CGEN_INT_INSN_P 321 322 /* Subroutine of extract_normal. 323 Ensure sufficient bytes are cached in EX_INFO. 324 OFFSET is the offset in bytes from the start of the insn of the value. 325 BYTES is the length of the needed value. 326 Returns 1 for success, 0 for failure. */ 327 328 static CGEN_INLINE int 329 fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 330 CGEN_EXTRACT_INFO *ex_info, 331 int offset, 332 int bytes, 333 bfd_vma pc) 334 { 335 /* It's doubtful that the middle part has already been fetched so 336 we don't optimize that case. kiss. */ 337 unsigned int mask; 338 disassemble_info *info = (disassemble_info *) ex_info->dis_info; 339 340 /* First do a quick check. */ 341 mask = (1 << bytes) - 1; 342 if (((ex_info->valid >> offset) & mask) == mask) 343 return 1; 344 345 /* Search for the first byte we need to read. */ 346 for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1) 347 if (! (mask & ex_info->valid)) 348 break; 349 350 if (bytes) 351 { 352 int status; 353 354 pc += offset; 355 status = (*info->read_memory_func) 356 (pc, ex_info->insn_bytes + offset, bytes, info); 357 358 if (status != 0) 359 { 360 (*info->memory_error_func) (status, pc, info); 361 return 0; 362 } 363 364 ex_info->valid |= ((1 << bytes) - 1) << offset; 365 } 366 367 return 1; 368 } 369 370 /* Subroutine of extract_normal. */ 371 372 static CGEN_INLINE long 373 extract_1 (CGEN_CPU_DESC cd, 374 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, 375 int start, 376 int length, 377 int word_length, 378 unsigned char *bufp, 379 bfd_vma pc ATTRIBUTE_UNUSED) 380 { 381 unsigned long x; 382 int shift; 383 384 x = cgen_get_insn_value (cd, bufp, word_length); 385 386 if (CGEN_INSN_LSB0_P) 387 shift = (start + 1) - length; 388 else 389 shift = (word_length - (start + length)); 390 return x >> shift; 391 } 392 393 #endif /* ! CGEN_INT_INSN_P */ 394 395 /* Default extraction routine. 396 397 INSN_VALUE is the first base_insn_bitsize bits of the insn in host order, 398 or sometimes less for cases like the m32r where the base insn size is 32 399 but some insns are 16 bits. 400 ATTRS is a mask of the boolean attributes. We only need `SIGNED', 401 but for generality we take a bitmask of all of them. 402 WORD_OFFSET is the offset in bits from the start of the insn of the value. 403 WORD_LENGTH is the length of the word in bits in which the value resides. 404 START is the starting bit number in the word, architecture origin. 405 LENGTH is the length of VALUE in bits. 406 TOTAL_LENGTH is the total length of the insn in bits. 407 408 Returns 1 for success, 0 for failure. */ 409 410 /* ??? The return code isn't properly used. wip. */ 411 412 /* ??? This doesn't handle bfd_vma's. Create another function when 413 necessary. */ 414 415 static int 416 extract_normal (CGEN_CPU_DESC cd, 417 #if ! CGEN_INT_INSN_P 418 CGEN_EXTRACT_INFO *ex_info, 419 #else 420 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, 421 #endif 422 CGEN_INSN_INT insn_value, 423 unsigned int attrs, 424 unsigned int word_offset, 425 unsigned int start, 426 unsigned int length, 427 unsigned int word_length, 428 unsigned int total_length, 429 #if ! CGEN_INT_INSN_P 430 bfd_vma pc, 431 #else 432 bfd_vma pc ATTRIBUTE_UNUSED, 433 #endif 434 long *valuep) 435 { 436 long value, mask; 437 438 /* If LENGTH is zero, this operand doesn't contribute to the value 439 so give it a standard value of zero. */ 440 if (length == 0) 441 { 442 *valuep = 0; 443 return 1; 444 } 445 446 if (word_length > 8 * sizeof (CGEN_INSN_INT)) 447 abort (); 448 449 /* For architectures with insns smaller than the insn-base-bitsize, 450 word_length may be too big. */ 451 if (cd->min_insn_bitsize < cd->base_insn_bitsize) 452 { 453 if (word_offset + word_length > total_length) 454 word_length = total_length - word_offset; 455 } 456 457 /* Does the value reside in INSN_VALUE, and at the right alignment? */ 458 459 if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length)) 460 { 461 if (CGEN_INSN_LSB0_P) 462 value = insn_value >> ((word_offset + start + 1) - length); 463 else 464 value = insn_value >> (total_length - ( word_offset + start + length)); 465 } 466 467 #if ! CGEN_INT_INSN_P 468 469 else 470 { 471 unsigned char *bufp = ex_info->insn_bytes + word_offset / 8; 472 473 if (word_length > 8 * sizeof (CGEN_INSN_INT)) 474 abort (); 475 476 if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0) 477 return 0; 478 479 value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc); 480 } 481 482 #endif /* ! CGEN_INT_INSN_P */ 483 484 /* Written this way to avoid undefined behaviour. */ 485 mask = (((1L << (length - 1)) - 1) << 1) | 1; 486 487 value &= mask; 488 /* sign extend? */ 489 if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED) 490 && (value & (1L << (length - 1)))) 491 value |= ~mask; 492 493 *valuep = value; 494 495 return 1; 496 } 497 498 /* Default insn extractor. 499 500 INSN_VALUE is the first base_insn_bitsize bits, translated to host order. 501 The extracted fields are stored in FIELDS. 502 EX_INFO is used to handle reading variable length insns. 503 Return the length of the insn in bits, or 0 if no match, 504 or -1 if an error occurs fetching data (memory_error_func will have 505 been called). */ 506 507 static int 508 extract_insn_normal (CGEN_CPU_DESC cd, 509 const CGEN_INSN *insn, 510 CGEN_EXTRACT_INFO *ex_info, 511 CGEN_INSN_INT insn_value, 512 CGEN_FIELDS *fields, 513 bfd_vma pc) 514 { 515 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 516 const CGEN_SYNTAX_CHAR_TYPE *syn; 517 518 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 519 520 CGEN_INIT_EXTRACT (cd); 521 522 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) 523 { 524 int length; 525 526 if (CGEN_SYNTAX_CHAR_P (*syn)) 527 continue; 528 529 length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn), 530 ex_info, insn_value, fields, pc); 531 if (length <= 0) 532 return length; 533 } 534 535 /* We recognized and successfully extracted this insn. */ 536 return CGEN_INSN_BITSIZE (insn); 537 } 538 539 /* Machine generated code added here. */ 541 542 const char * or1k_cgen_insert_operand 543 (CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma); 544 545 /* Main entry point for operand insertion. 546 547 This function is basically just a big switch statement. Earlier versions 548 used tables to look up the function to use, but 549 - if the table contains both assembler and disassembler functions then 550 the disassembler contains much of the assembler and vice-versa, 551 - there's a lot of inlining possibilities as things grow, 552 - using a switch statement avoids the function call overhead. 553 554 This function could be moved into `parse_insn_normal', but keeping it 555 separate makes clear the interface between `parse_insn_normal' and each of 556 the handlers. It's also needed by GAS to insert operands that couldn't be 557 resolved during parsing. */ 558 559 const char * 560 or1k_cgen_insert_operand (CGEN_CPU_DESC cd, 561 int opindex, 562 CGEN_FIELDS * fields, 563 CGEN_INSN_BYTES_PTR buffer, 564 bfd_vma pc ATTRIBUTE_UNUSED) 565 { 566 const char * errmsg = NULL; 567 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); 568 569 switch (opindex) 570 { 571 case OR1K_OPERAND_DISP26 : 572 { 573 long value = fields->f_disp26; 574 value = ((SI) (((value) - (pc))) >> (2)); 575 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 25, 26, 32, total_length, buffer); 576 } 577 break; 578 case OR1K_OPERAND_RA : 579 errmsg = insert_normal (cd, fields->f_r2, 0, 0, 20, 5, 32, total_length, buffer); 580 break; 581 case OR1K_OPERAND_RADF : 582 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer); 583 break; 584 case OR1K_OPERAND_RASF : 585 errmsg = insert_normal (cd, fields->f_r2, 0, 0, 20, 5, 32, total_length, buffer); 586 break; 587 case OR1K_OPERAND_RB : 588 errmsg = insert_normal (cd, fields->f_r3, 0, 0, 15, 5, 32, total_length, buffer); 589 break; 590 case OR1K_OPERAND_RBDF : 591 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer); 592 break; 593 case OR1K_OPERAND_RBSF : 594 errmsg = insert_normal (cd, fields->f_r3, 0, 0, 15, 5, 32, total_length, buffer); 595 break; 596 case OR1K_OPERAND_RD : 597 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer); 598 break; 599 case OR1K_OPERAND_RDDF : 600 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer); 601 break; 602 case OR1K_OPERAND_RDSF : 603 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer); 604 break; 605 case OR1K_OPERAND_SIMM16 : 606 errmsg = insert_normal (cd, fields->f_simm16, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_SIGN_OPT), 0, 15, 16, 32, total_length, buffer); 607 break; 608 case OR1K_OPERAND_SIMM16_SPLIT : 609 { 610 { 611 FLD (f_imm16_25_5) = ((((INT) (FLD (f_simm16_split)) >> (11))) & (31)); 612 FLD (f_imm16_10_11) = ((FLD (f_simm16_split)) & (2047)); 613 } 614 errmsg = insert_normal (cd, fields->f_imm16_25_5, 0, 0, 25, 5, 32, total_length, buffer); 615 if (errmsg) 616 break; 617 errmsg = insert_normal (cd, fields->f_imm16_10_11, 0, 0, 10, 11, 32, total_length, buffer); 618 if (errmsg) 619 break; 620 } 621 break; 622 case OR1K_OPERAND_UIMM16 : 623 errmsg = insert_normal (cd, fields->f_uimm16, 0, 0, 15, 16, 32, total_length, buffer); 624 break; 625 case OR1K_OPERAND_UIMM16_SPLIT : 626 { 627 { 628 FLD (f_imm16_25_5) = ((((UINT) (FLD (f_uimm16_split)) >> (11))) & (31)); 629 FLD (f_imm16_10_11) = ((FLD (f_uimm16_split)) & (2047)); 630 } 631 errmsg = insert_normal (cd, fields->f_imm16_25_5, 0, 0, 25, 5, 32, total_length, buffer); 632 if (errmsg) 633 break; 634 errmsg = insert_normal (cd, fields->f_imm16_10_11, 0, 0, 10, 11, 32, total_length, buffer); 635 if (errmsg) 636 break; 637 } 638 break; 639 case OR1K_OPERAND_UIMM6 : 640 errmsg = insert_normal (cd, fields->f_uimm6, 0, 0, 5, 6, 32, total_length, buffer); 641 break; 642 643 default : 644 /* xgettext:c-format */ 645 fprintf (stderr, _("Unrecognized field %d while building insn.\n"), 646 opindex); 647 abort (); 648 } 649 650 return errmsg; 651 } 652 653 int or1k_cgen_extract_operand 654 (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); 655 656 /* Main entry point for operand extraction. 657 The result is <= 0 for error, >0 for success. 658 ??? Actual values aren't well defined right now. 659 660 This function is basically just a big switch statement. Earlier versions 661 used tables to look up the function to use, but 662 - if the table contains both assembler and disassembler functions then 663 the disassembler contains much of the assembler and vice-versa, 664 - there's a lot of inlining possibilities as things grow, 665 - using a switch statement avoids the function call overhead. 666 667 This function could be moved into `print_insn_normal', but keeping it 668 separate makes clear the interface between `print_insn_normal' and each of 669 the handlers. */ 670 671 int 672 or1k_cgen_extract_operand (CGEN_CPU_DESC cd, 673 int opindex, 674 CGEN_EXTRACT_INFO *ex_info, 675 CGEN_INSN_INT insn_value, 676 CGEN_FIELDS * fields, 677 bfd_vma pc) 678 { 679 /* Assume success (for those operands that are nops). */ 680 int length = 1; 681 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); 682 683 switch (opindex) 684 { 685 case OR1K_OPERAND_DISP26 : 686 { 687 long value; 688 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 25, 26, 32, total_length, pc, & value); 689 value = ((((value) << (2))) + (pc)); 690 fields->f_disp26 = value; 691 } 692 break; 693 case OR1K_OPERAND_RA : 694 length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_r2); 695 break; 696 case OR1K_OPERAND_RADF : 697 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1); 698 break; 699 case OR1K_OPERAND_RASF : 700 length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_r2); 701 break; 702 case OR1K_OPERAND_RB : 703 length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_r3); 704 break; 705 case OR1K_OPERAND_RBDF : 706 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1); 707 break; 708 case OR1K_OPERAND_RBSF : 709 length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_r3); 710 break; 711 case OR1K_OPERAND_RD : 712 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1); 713 break; 714 case OR1K_OPERAND_RDDF : 715 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1); 716 break; 717 case OR1K_OPERAND_RDSF : 718 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1); 719 break; 720 case OR1K_OPERAND_SIMM16 : 721 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_SIGN_OPT), 0, 15, 16, 32, total_length, pc, & fields->f_simm16); 722 break; 723 case OR1K_OPERAND_SIMM16_SPLIT : 724 { 725 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_imm16_25_5); 726 if (length <= 0) break; 727 length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 11, 32, total_length, pc, & fields->f_imm16_10_11); 728 if (length <= 0) break; 729 FLD (f_simm16_split) = ((HI) (UINT) (((((FLD (f_imm16_25_5)) << (11))) | (FLD (f_imm16_10_11))))); 730 } 731 break; 732 case OR1K_OPERAND_UIMM16 : 733 length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_uimm16); 734 break; 735 case OR1K_OPERAND_UIMM16_SPLIT : 736 { 737 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_imm16_25_5); 738 if (length <= 0) break; 739 length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 11, 32, total_length, pc, & fields->f_imm16_10_11); 740 if (length <= 0) break; 741 FLD (f_uimm16_split) = ((UHI) (UINT) (((((FLD (f_imm16_25_5)) << (11))) | (FLD (f_imm16_10_11))))); 742 } 743 break; 744 case OR1K_OPERAND_UIMM6 : 745 length = extract_normal (cd, ex_info, insn_value, 0, 0, 5, 6, 32, total_length, pc, & fields->f_uimm6); 746 break; 747 748 default : 749 /* xgettext:c-format */ 750 fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"), 751 opindex); 752 abort (); 753 } 754 755 return length; 756 } 757 758 cgen_insert_fn * const or1k_cgen_insert_handlers[] = 759 { 760 insert_insn_normal, 761 }; 762 763 cgen_extract_fn * const or1k_cgen_extract_handlers[] = 764 { 765 extract_insn_normal, 766 }; 767 768 int or1k_cgen_get_int_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); 769 bfd_vma or1k_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); 770 771 /* Getting values from cgen_fields is handled by a collection of functions. 772 They are distinguished by the type of the VALUE argument they return. 773 TODO: floating point, inlining support, remove cases where result type 774 not appropriate. */ 775 776 int 777 or1k_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 778 int opindex, 779 const CGEN_FIELDS * fields) 780 { 781 int value; 782 783 switch (opindex) 784 { 785 case OR1K_OPERAND_DISP26 : 786 value = fields->f_disp26; 787 break; 788 case OR1K_OPERAND_RA : 789 value = fields->f_r2; 790 break; 791 case OR1K_OPERAND_RADF : 792 value = fields->f_r1; 793 break; 794 case OR1K_OPERAND_RASF : 795 value = fields->f_r2; 796 break; 797 case OR1K_OPERAND_RB : 798 value = fields->f_r3; 799 break; 800 case OR1K_OPERAND_RBDF : 801 value = fields->f_r1; 802 break; 803 case OR1K_OPERAND_RBSF : 804 value = fields->f_r3; 805 break; 806 case OR1K_OPERAND_RD : 807 value = fields->f_r1; 808 break; 809 case OR1K_OPERAND_RDDF : 810 value = fields->f_r1; 811 break; 812 case OR1K_OPERAND_RDSF : 813 value = fields->f_r1; 814 break; 815 case OR1K_OPERAND_SIMM16 : 816 value = fields->f_simm16; 817 break; 818 case OR1K_OPERAND_SIMM16_SPLIT : 819 value = fields->f_simm16_split; 820 break; 821 case OR1K_OPERAND_UIMM16 : 822 value = fields->f_uimm16; 823 break; 824 case OR1K_OPERAND_UIMM16_SPLIT : 825 value = fields->f_uimm16_split; 826 break; 827 case OR1K_OPERAND_UIMM6 : 828 value = fields->f_uimm6; 829 break; 830 831 default : 832 /* xgettext:c-format */ 833 fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"), 834 opindex); 835 abort (); 836 } 837 838 return value; 839 } 840 841 bfd_vma 842 or1k_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 843 int opindex, 844 const CGEN_FIELDS * fields) 845 { 846 bfd_vma value; 847 848 switch (opindex) 849 { 850 case OR1K_OPERAND_DISP26 : 851 value = fields->f_disp26; 852 break; 853 case OR1K_OPERAND_RA : 854 value = fields->f_r2; 855 break; 856 case OR1K_OPERAND_RADF : 857 value = fields->f_r1; 858 break; 859 case OR1K_OPERAND_RASF : 860 value = fields->f_r2; 861 break; 862 case OR1K_OPERAND_RB : 863 value = fields->f_r3; 864 break; 865 case OR1K_OPERAND_RBDF : 866 value = fields->f_r1; 867 break; 868 case OR1K_OPERAND_RBSF : 869 value = fields->f_r3; 870 break; 871 case OR1K_OPERAND_RD : 872 value = fields->f_r1; 873 break; 874 case OR1K_OPERAND_RDDF : 875 value = fields->f_r1; 876 break; 877 case OR1K_OPERAND_RDSF : 878 value = fields->f_r1; 879 break; 880 case OR1K_OPERAND_SIMM16 : 881 value = fields->f_simm16; 882 break; 883 case OR1K_OPERAND_SIMM16_SPLIT : 884 value = fields->f_simm16_split; 885 break; 886 case OR1K_OPERAND_UIMM16 : 887 value = fields->f_uimm16; 888 break; 889 case OR1K_OPERAND_UIMM16_SPLIT : 890 value = fields->f_uimm16_split; 891 break; 892 case OR1K_OPERAND_UIMM6 : 893 value = fields->f_uimm6; 894 break; 895 896 default : 897 /* xgettext:c-format */ 898 fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"), 899 opindex); 900 abort (); 901 } 902 903 return value; 904 } 905 906 void or1k_cgen_set_int_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, int); 907 void or1k_cgen_set_vma_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma); 908 909 /* Stuffing values in cgen_fields is handled by a collection of functions. 910 They are distinguished by the type of the VALUE argument they accept. 911 TODO: floating point, inlining support, remove cases where argument type 912 not appropriate. */ 913 914 void 915 or1k_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 916 int opindex, 917 CGEN_FIELDS * fields, 918 int value) 919 { 920 switch (opindex) 921 { 922 case OR1K_OPERAND_DISP26 : 923 fields->f_disp26 = value; 924 break; 925 case OR1K_OPERAND_RA : 926 fields->f_r2 = value; 927 break; 928 case OR1K_OPERAND_RADF : 929 fields->f_r1 = value; 930 break; 931 case OR1K_OPERAND_RASF : 932 fields->f_r2 = value; 933 break; 934 case OR1K_OPERAND_RB : 935 fields->f_r3 = value; 936 break; 937 case OR1K_OPERAND_RBDF : 938 fields->f_r1 = value; 939 break; 940 case OR1K_OPERAND_RBSF : 941 fields->f_r3 = value; 942 break; 943 case OR1K_OPERAND_RD : 944 fields->f_r1 = value; 945 break; 946 case OR1K_OPERAND_RDDF : 947 fields->f_r1 = value; 948 break; 949 case OR1K_OPERAND_RDSF : 950 fields->f_r1 = value; 951 break; 952 case OR1K_OPERAND_SIMM16 : 953 fields->f_simm16 = value; 954 break; 955 case OR1K_OPERAND_SIMM16_SPLIT : 956 fields->f_simm16_split = value; 957 break; 958 case OR1K_OPERAND_UIMM16 : 959 fields->f_uimm16 = value; 960 break; 961 case OR1K_OPERAND_UIMM16_SPLIT : 962 fields->f_uimm16_split = value; 963 break; 964 case OR1K_OPERAND_UIMM6 : 965 fields->f_uimm6 = value; 966 break; 967 968 default : 969 /* xgettext:c-format */ 970 fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"), 971 opindex); 972 abort (); 973 } 974 } 975 976 void 977 or1k_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 978 int opindex, 979 CGEN_FIELDS * fields, 980 bfd_vma value) 981 { 982 switch (opindex) 983 { 984 case OR1K_OPERAND_DISP26 : 985 fields->f_disp26 = value; 986 break; 987 case OR1K_OPERAND_RA : 988 fields->f_r2 = value; 989 break; 990 case OR1K_OPERAND_RADF : 991 fields->f_r1 = value; 992 break; 993 case OR1K_OPERAND_RASF : 994 fields->f_r2 = value; 995 break; 996 case OR1K_OPERAND_RB : 997 fields->f_r3 = value; 998 break; 999 case OR1K_OPERAND_RBDF : 1000 fields->f_r1 = value; 1001 break; 1002 case OR1K_OPERAND_RBSF : 1003 fields->f_r3 = value; 1004 break; 1005 case OR1K_OPERAND_RD : 1006 fields->f_r1 = value; 1007 break; 1008 case OR1K_OPERAND_RDDF : 1009 fields->f_r1 = value; 1010 break; 1011 case OR1K_OPERAND_RDSF : 1012 fields->f_r1 = value; 1013 break; 1014 case OR1K_OPERAND_SIMM16 : 1015 fields->f_simm16 = value; 1016 break; 1017 case OR1K_OPERAND_SIMM16_SPLIT : 1018 fields->f_simm16_split = value; 1019 break; 1020 case OR1K_OPERAND_UIMM16 : 1021 fields->f_uimm16 = value; 1022 break; 1023 case OR1K_OPERAND_UIMM16_SPLIT : 1024 fields->f_uimm16_split = value; 1025 break; 1026 case OR1K_OPERAND_UIMM6 : 1027 fields->f_uimm6 = value; 1028 break; 1029 1030 default : 1031 /* xgettext:c-format */ 1032 fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"), 1033 opindex); 1034 abort (); 1035 } 1036 } 1037 1038 /* Function to call before using the instruction builder tables. */ 1039 1040 void 1041 or1k_cgen_init_ibld_table (CGEN_CPU_DESC cd) 1042 { 1043 cd->insert_handlers = & or1k_cgen_insert_handlers[0]; 1044 cd->extract_handlers = & or1k_cgen_extract_handlers[0]; 1045 1046 cd->insert_operand = or1k_cgen_insert_operand; 1047 cd->extract_operand = or1k_cgen_extract_operand; 1048 1049 cd->get_int_operand = or1k_cgen_get_int_operand; 1050 cd->set_int_operand = or1k_cgen_set_int_operand; 1051 cd->get_vma_operand = or1k_cgen_get_vma_operand; 1052 cd->set_vma_operand = or1k_cgen_set_vma_operand; 1053 } 1054
