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. */ 74 75 #if ! CGEN_INT_INSN_P 76 77 /* Subroutine of insert_normal. */ 78 79 static CGEN_INLINE void 80 insert_1 (CGEN_CPU_DESC cd, 81 unsigned long value, 82 int start, 83 int length, 84 int word_length, 85 unsigned char *bufp) 86 { 87 unsigned long x,mask; 88 int shift; 89 90 x = cgen_get_insn_value (cd, bufp, word_length); 91 92 /* Written this way to avoid undefined behaviour. */ 93 mask = (((1L << (length - 1)) - 1) << 1) | 1; 94 if (CGEN_INSN_LSB0_P) 95 shift = (start + 1) - length; 96 else 97 shift = (word_length - (start + length)); 98 x = (x & ~(mask << shift)) | ((value & mask) << shift); 99 100 cgen_put_insn_value (cd, bufp, word_length, (bfd_vma) x); 101 } 102 103 #endif /* ! CGEN_INT_INSN_P */ 104 105 /* Default insertion routine. 106 107 ATTRS is a mask of the boolean attributes. 108 WORD_OFFSET is the offset in bits from the start of the insn of the value. 109 WORD_LENGTH is the length of the word in bits in which the value resides. 110 START is the starting bit number in the word, architecture origin. 111 LENGTH is the length of VALUE in bits. 112 TOTAL_LENGTH is the total length of the insn in bits. 113 114 The result is an error message or NULL if success. */ 115 116 /* ??? This duplicates functionality with bfd's howto table and 117 bfd_install_relocation. */ 118 /* ??? This doesn't handle bfd_vma's. Create another function when 119 necessary. */ 120 121 static const char * 122 insert_normal (CGEN_CPU_DESC cd, 123 long value, 124 unsigned int attrs, 125 unsigned int word_offset, 126 unsigned int start, 127 unsigned int length, 128 unsigned int word_length, 129 unsigned int total_length, 130 CGEN_INSN_BYTES_PTR buffer) 131 { 132 static char errbuf[100]; 133 /* Written this way to avoid undefined behaviour. */ 134 unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1; 135 136 /* If LENGTH is zero, this operand doesn't contribute to the value. */ 137 if (length == 0) 138 return NULL; 139 140 if (word_length > 8 * sizeof (CGEN_INSN_INT)) 141 abort (); 142 143 /* For architectures with insns smaller than the base-insn-bitsize, 144 word_length may be too big. */ 145 if (cd->min_insn_bitsize < cd->base_insn_bitsize) 146 { 147 if (word_offset == 0 148 && word_length > total_length) 149 word_length = total_length; 150 } 151 152 /* Ensure VALUE will fit. */ 153 if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGN_OPT)) 154 { 155 long minval = - (1L << (length - 1)); 156 unsigned long maxval = mask; 157 158 if ((value > 0 && (unsigned long) value > maxval) 159 || value < minval) 160 { 161 /* xgettext:c-format */ 162 sprintf (errbuf, 163 _("operand out of range (%ld not between %ld and %lu)"), 164 value, minval, maxval); 165 return errbuf; 166 } 167 } 168 else if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)) 169 { 170 unsigned long maxval = mask; 171 unsigned long val = (unsigned long) value; 172 173 /* For hosts with a word size > 32 check to see if value has been sign 174 extended beyond 32 bits. If so then ignore these higher sign bits 175 as the user is attempting to store a 32-bit signed value into an 176 unsigned 32-bit field which is allowed. */ 177 if (sizeof (unsigned long) > 4 && ((value >> 32) == -1)) 178 val &= 0xFFFFFFFF; 179 180 if (val > maxval) 181 { 182 /* xgettext:c-format */ 183 sprintf (errbuf, 184 _("operand out of range (0x%lx not between 0 and 0x%lx)"), 185 val, maxval); 186 return errbuf; 187 } 188 } 189 else 190 { 191 if (! cgen_signed_overflow_ok_p (cd)) 192 { 193 long minval = - (1L << (length - 1)); 194 long maxval = (1L << (length - 1)) - 1; 195 196 if (value < minval || value > maxval) 197 { 198 sprintf 199 /* xgettext:c-format */ 200 (errbuf, _("operand out of range (%ld not between %ld and %ld)"), 201 value, minval, maxval); 202 return errbuf; 203 } 204 } 205 } 206 207 #if CGEN_INT_INSN_P 208 209 { 210 int shift; 211 212 if (CGEN_INSN_LSB0_P) 213 shift = (word_offset + start + 1) - length; 214 else 215 shift = total_length - (word_offset + start + length); 216 *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift); 217 } 218 219 #else /* ! CGEN_INT_INSN_P */ 220 221 { 222 unsigned char *bufp = (unsigned char *) buffer + word_offset / 8; 223 224 insert_1 (cd, value, start, length, word_length, bufp); 225 } 226 227 #endif /* ! CGEN_INT_INSN_P */ 228 229 return NULL; 230 } 231 232 /* Default insn builder (insert handler). 233 The instruction is recorded in CGEN_INT_INSN_P byte order (meaning 234 that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is 235 recorded in host byte order, otherwise BUFFER is an array of bytes 236 and the value is recorded in target byte order). 237 The result is an error message or NULL if success. */ 238 239 static const char * 240 insert_insn_normal (CGEN_CPU_DESC cd, 241 const CGEN_INSN * insn, 242 CGEN_FIELDS * fields, 243 CGEN_INSN_BYTES_PTR buffer, 244 bfd_vma pc) 245 { 246 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 247 unsigned long value; 248 const CGEN_SYNTAX_CHAR_TYPE * syn; 249 250 CGEN_INIT_INSERT (cd); 251 value = CGEN_INSN_BASE_VALUE (insn); 252 253 /* If we're recording insns as numbers (rather than a string of bytes), 254 target byte order handling is deferred until later. */ 255 256 #if CGEN_INT_INSN_P 257 258 put_insn_int_value (cd, buffer, cd->base_insn_bitsize, 259 CGEN_FIELDS_BITSIZE (fields), value); 260 261 #else 262 263 cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize, 264 (unsigned) CGEN_FIELDS_BITSIZE (fields)), 265 value); 266 267 #endif /* ! CGEN_INT_INSN_P */ 268 269 /* ??? It would be better to scan the format's fields. 270 Still need to be able to insert a value based on the operand though; 271 e.g. storing a branch displacement that got resolved later. 272 Needs more thought first. */ 273 274 for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn) 275 { 276 const char *errmsg; 277 278 if (CGEN_SYNTAX_CHAR_P (* syn)) 279 continue; 280 281 errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn), 282 fields, buffer, pc); 283 if (errmsg) 284 return errmsg; 285 } 286 287 return NULL; 288 } 289 290 #if CGEN_INT_INSN_P 291 /* Cover function to store an insn value into an integral insn. Must go here 292 because it needs <prefix>-desc.h for CGEN_INT_INSN_P. */ 293 294 static void 295 put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 296 CGEN_INSN_BYTES_PTR buf, 297 int length, 298 int insn_length, 299 CGEN_INSN_INT value) 300 { 301 /* For architectures with insns smaller than the base-insn-bitsize, 302 length may be too big. */ 303 if (length > insn_length) 304 *buf = value; 305 else 306 { 307 int shift = insn_length - length; 308 /* Written this way to avoid undefined behaviour. */ 309 CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1; 310 311 *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift); 312 } 313 } 314 #endif 315 316 /* Operand extraction. */ 317 318 #if ! CGEN_INT_INSN_P 319 320 /* Subroutine of extract_normal. 321 Ensure sufficient bytes are cached in EX_INFO. 322 OFFSET is the offset in bytes from the start of the insn of the value. 323 BYTES is the length of the needed value. 324 Returns 1 for success, 0 for failure. */ 325 326 static CGEN_INLINE int 327 fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 328 CGEN_EXTRACT_INFO *ex_info, 329 int offset, 330 int bytes, 331 bfd_vma pc) 332 { 333 /* It's doubtful that the middle part has already been fetched so 334 we don't optimize that case. kiss. */ 335 unsigned int mask; 336 disassemble_info *info = (disassemble_info *) ex_info->dis_info; 337 338 /* First do a quick check. */ 339 mask = (1 << bytes) - 1; 340 if (((ex_info->valid >> offset) & mask) == mask) 341 return 1; 342 343 /* Search for the first byte we need to read. */ 344 for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1) 345 if (! (mask & ex_info->valid)) 346 break; 347 348 if (bytes) 349 { 350 int status; 351 352 pc += offset; 353 status = (*info->read_memory_func) 354 (pc, ex_info->insn_bytes + offset, bytes, info); 355 356 if (status != 0) 357 { 358 (*info->memory_error_func) (status, pc, info); 359 return 0; 360 } 361 362 ex_info->valid |= ((1 << bytes) - 1) << offset; 363 } 364 365 return 1; 366 } 367 368 /* Subroutine of extract_normal. */ 369 370 static CGEN_INLINE long 371 extract_1 (CGEN_CPU_DESC cd, 372 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, 373 int start, 374 int length, 375 int word_length, 376 unsigned char *bufp, 377 bfd_vma pc ATTRIBUTE_UNUSED) 378 { 379 unsigned long x; 380 int shift; 381 382 x = cgen_get_insn_value (cd, bufp, word_length); 383 384 if (CGEN_INSN_LSB0_P) 385 shift = (start + 1) - length; 386 else 387 shift = (word_length - (start + length)); 388 return x >> shift; 389 } 390 391 #endif /* ! CGEN_INT_INSN_P */ 392 393 /* Default extraction routine. 394 395 INSN_VALUE is the first base_insn_bitsize bits of the insn in host order, 396 or sometimes less for cases like the m32r where the base insn size is 32 397 but some insns are 16 bits. 398 ATTRS is a mask of the boolean attributes. We only need `SIGNED', 399 but for generality we take a bitmask of all of them. 400 WORD_OFFSET is the offset in bits from the start of the insn of the value. 401 WORD_LENGTH is the length of the word in bits in which the value resides. 402 START is the starting bit number in the word, architecture origin. 403 LENGTH is the length of VALUE in bits. 404 TOTAL_LENGTH is the total length of the insn in bits. 405 406 Returns 1 for success, 0 for failure. */ 407 408 /* ??? The return code isn't properly used. wip. */ 409 410 /* ??? This doesn't handle bfd_vma's. Create another function when 411 necessary. */ 412 413 static int 414 extract_normal (CGEN_CPU_DESC cd, 415 #if ! CGEN_INT_INSN_P 416 CGEN_EXTRACT_INFO *ex_info, 417 #else 418 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, 419 #endif 420 CGEN_INSN_INT insn_value, 421 unsigned int attrs, 422 unsigned int word_offset, 423 unsigned int start, 424 unsigned int length, 425 unsigned int word_length, 426 unsigned int total_length, 427 #if ! CGEN_INT_INSN_P 428 bfd_vma pc, 429 #else 430 bfd_vma pc ATTRIBUTE_UNUSED, 431 #endif 432 long *valuep) 433 { 434 long value, mask; 435 436 /* If LENGTH is zero, this operand doesn't contribute to the value 437 so give it a standard value of zero. */ 438 if (length == 0) 439 { 440 *valuep = 0; 441 return 1; 442 } 443 444 if (word_length > 8 * sizeof (CGEN_INSN_INT)) 445 abort (); 446 447 /* For architectures with insns smaller than the insn-base-bitsize, 448 word_length may be too big. */ 449 if (cd->min_insn_bitsize < cd->base_insn_bitsize) 450 { 451 if (word_offset + word_length > total_length) 452 word_length = total_length - word_offset; 453 } 454 455 /* Does the value reside in INSN_VALUE, and at the right alignment? */ 456 457 if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length)) 458 { 459 if (CGEN_INSN_LSB0_P) 460 value = insn_value >> ((word_offset + start + 1) - length); 461 else 462 value = insn_value >> (total_length - ( word_offset + start + length)); 463 } 464 465 #if ! CGEN_INT_INSN_P 466 467 else 468 { 469 unsigned char *bufp = ex_info->insn_bytes + word_offset / 8; 470 471 if (word_length > 8 * sizeof (CGEN_INSN_INT)) 472 abort (); 473 474 if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0) 475 return 0; 476 477 value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc); 478 } 479 480 #endif /* ! CGEN_INT_INSN_P */ 481 482 /* Written this way to avoid undefined behaviour. */ 483 mask = (((1L << (length - 1)) - 1) << 1) | 1; 484 485 value &= mask; 486 /* sign extend? */ 487 if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED) 488 && (value & (1L << (length - 1)))) 489 value |= ~mask; 490 491 *valuep = value; 492 493 return 1; 494 } 495 496 /* Default insn extractor. 497 498 INSN_VALUE is the first base_insn_bitsize bits, translated to host order. 499 The extracted fields are stored in FIELDS. 500 EX_INFO is used to handle reading variable length insns. 501 Return the length of the insn in bits, or 0 if no match, 502 or -1 if an error occurs fetching data (memory_error_func will have 503 been called). */ 504 505 static int 506 extract_insn_normal (CGEN_CPU_DESC cd, 507 const CGEN_INSN *insn, 508 CGEN_EXTRACT_INFO *ex_info, 509 CGEN_INSN_INT insn_value, 510 CGEN_FIELDS *fields, 511 bfd_vma pc) 512 { 513 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 514 const CGEN_SYNTAX_CHAR_TYPE *syn; 515 516 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 517 518 CGEN_INIT_EXTRACT (cd); 519 520 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) 521 { 522 int length; 523 524 if (CGEN_SYNTAX_CHAR_P (*syn)) 525 continue; 526 527 length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn), 528 ex_info, insn_value, fields, pc); 529 if (length <= 0) 530 return length; 531 } 532 533 /* We recognized and successfully extracted this insn. */ 534 return CGEN_INSN_BITSIZE (insn); 535 } 536 537 /* Machine generated code added here. */ 538 539 const char * or1k_cgen_insert_operand 540 (CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma); 541 542 /* Main entry point for operand insertion. 543 544 This function is basically just a big switch statement. Earlier versions 545 used tables to look up the function to use, but 546 - if the table contains both assembler and disassembler functions then 547 the disassembler contains much of the assembler and vice-versa, 548 - there's a lot of inlining possibilities as things grow, 549 - using a switch statement avoids the function call overhead. 550 551 This function could be moved into `parse_insn_normal', but keeping it 552 separate makes clear the interface between `parse_insn_normal' and each of 553 the handlers. It's also needed by GAS to insert operands that couldn't be 554 resolved during parsing. */ 555 556 const char * 557 or1k_cgen_insert_operand (CGEN_CPU_DESC cd, 558 int opindex, 559 CGEN_FIELDS * fields, 560 CGEN_INSN_BYTES_PTR buffer, 561 bfd_vma pc ATTRIBUTE_UNUSED) 562 { 563 const char * errmsg = NULL; 564 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); 565 566 switch (opindex) 567 { 568 case OR1K_OPERAND_DISP26 : 569 { 570 long value = fields->f_disp26; 571 value = ((SI) (((value) - (pc))) >> (2)); 572 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 25, 26, 32, total_length, buffer); 573 } 574 break; 575 case OR1K_OPERAND_RA : 576 errmsg = insert_normal (cd, fields->f_r2, 0, 0, 20, 5, 32, total_length, buffer); 577 break; 578 case OR1K_OPERAND_RADF : 579 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer); 580 break; 581 case OR1K_OPERAND_RASF : 582 errmsg = insert_normal (cd, fields->f_r2, 0, 0, 20, 5, 32, total_length, buffer); 583 break; 584 case OR1K_OPERAND_RB : 585 errmsg = insert_normal (cd, fields->f_r3, 0, 0, 15, 5, 32, total_length, buffer); 586 break; 587 case OR1K_OPERAND_RBDF : 588 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer); 589 break; 590 case OR1K_OPERAND_RBSF : 591 errmsg = insert_normal (cd, fields->f_r3, 0, 0, 15, 5, 32, total_length, buffer); 592 break; 593 case OR1K_OPERAND_RD : 594 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer); 595 break; 596 case OR1K_OPERAND_RDDF : 597 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer); 598 break; 599 case OR1K_OPERAND_RDSF : 600 errmsg = insert_normal (cd, fields->f_r1, 0, 0, 25, 5, 32, total_length, buffer); 601 break; 602 case OR1K_OPERAND_SIMM16 : 603 errmsg = insert_normal (cd, fields->f_simm16, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_SIGN_OPT), 0, 15, 16, 32, total_length, buffer); 604 break; 605 case OR1K_OPERAND_SIMM16_SPLIT : 606 { 607 { 608 FLD (f_imm16_25_5) = ((((INT) (FLD (f_simm16_split)) >> (11))) & (31)); 609 FLD (f_imm16_10_11) = ((FLD (f_simm16_split)) & (2047)); 610 } 611 errmsg = insert_normal (cd, fields->f_imm16_25_5, 0, 0, 25, 5, 32, total_length, buffer); 612 if (errmsg) 613 break; 614 errmsg = insert_normal (cd, fields->f_imm16_10_11, 0, 0, 10, 11, 32, total_length, buffer); 615 if (errmsg) 616 break; 617 } 618 break; 619 case OR1K_OPERAND_UIMM16 : 620 errmsg = insert_normal (cd, fields->f_uimm16, 0, 0, 15, 16, 32, total_length, buffer); 621 break; 622 case OR1K_OPERAND_UIMM16_SPLIT : 623 { 624 { 625 FLD (f_imm16_25_5) = ((((UINT) (FLD (f_uimm16_split)) >> (11))) & (31)); 626 FLD (f_imm16_10_11) = ((FLD (f_uimm16_split)) & (2047)); 627 } 628 errmsg = insert_normal (cd, fields->f_imm16_25_5, 0, 0, 25, 5, 32, total_length, buffer); 629 if (errmsg) 630 break; 631 errmsg = insert_normal (cd, fields->f_imm16_10_11, 0, 0, 10, 11, 32, total_length, buffer); 632 if (errmsg) 633 break; 634 } 635 break; 636 case OR1K_OPERAND_UIMM6 : 637 errmsg = insert_normal (cd, fields->f_uimm6, 0, 0, 5, 6, 32, total_length, buffer); 638 break; 639 640 default : 641 /* xgettext:c-format */ 642 fprintf (stderr, _("Unrecognized field %d while building insn.\n"), 643 opindex); 644 abort (); 645 } 646 647 return errmsg; 648 } 649 650 int or1k_cgen_extract_operand 651 (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); 652 653 /* Main entry point for operand extraction. 654 The result is <= 0 for error, >0 for success. 655 ??? Actual values aren't well defined right now. 656 657 This function is basically just a big switch statement. Earlier versions 658 used tables to look up the function to use, but 659 - if the table contains both assembler and disassembler functions then 660 the disassembler contains much of the assembler and vice-versa, 661 - there's a lot of inlining possibilities as things grow, 662 - using a switch statement avoids the function call overhead. 663 664 This function could be moved into `print_insn_normal', but keeping it 665 separate makes clear the interface between `print_insn_normal' and each of 666 the handlers. */ 667 668 int 669 or1k_cgen_extract_operand (CGEN_CPU_DESC cd, 670 int opindex, 671 CGEN_EXTRACT_INFO *ex_info, 672 CGEN_INSN_INT insn_value, 673 CGEN_FIELDS * fields, 674 bfd_vma pc) 675 { 676 /* Assume success (for those operands that are nops). */ 677 int length = 1; 678 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); 679 680 switch (opindex) 681 { 682 case OR1K_OPERAND_DISP26 : 683 { 684 long value; 685 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); 686 value = ((((value) << (2))) + (pc)); 687 fields->f_disp26 = value; 688 } 689 break; 690 case OR1K_OPERAND_RA : 691 length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_r2); 692 break; 693 case OR1K_OPERAND_RADF : 694 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1); 695 break; 696 case OR1K_OPERAND_RASF : 697 length = extract_normal (cd, ex_info, insn_value, 0, 0, 20, 5, 32, total_length, pc, & fields->f_r2); 698 break; 699 case OR1K_OPERAND_RB : 700 length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_r3); 701 break; 702 case OR1K_OPERAND_RBDF : 703 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1); 704 break; 705 case OR1K_OPERAND_RBSF : 706 length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 5, 32, total_length, pc, & fields->f_r3); 707 break; 708 case OR1K_OPERAND_RD : 709 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_r1); 710 break; 711 case OR1K_OPERAND_RDDF : 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_RDSF : 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_SIMM16 : 718 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); 719 break; 720 case OR1K_OPERAND_SIMM16_SPLIT : 721 { 722 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_imm16_25_5); 723 if (length <= 0) break; 724 length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 11, 32, total_length, pc, & fields->f_imm16_10_11); 725 if (length <= 0) break; 726 FLD (f_simm16_split) = ((HI) (UINT) (((((FLD (f_imm16_25_5)) << (11))) | (FLD (f_imm16_10_11))))); 727 } 728 break; 729 case OR1K_OPERAND_UIMM16 : 730 length = extract_normal (cd, ex_info, insn_value, 0, 0, 15, 16, 32, total_length, pc, & fields->f_uimm16); 731 break; 732 case OR1K_OPERAND_UIMM16_SPLIT : 733 { 734 length = extract_normal (cd, ex_info, insn_value, 0, 0, 25, 5, 32, total_length, pc, & fields->f_imm16_25_5); 735 if (length <= 0) break; 736 length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 11, 32, total_length, pc, & fields->f_imm16_10_11); 737 if (length <= 0) break; 738 FLD (f_uimm16_split) = ((UHI) (UINT) (((((FLD (f_imm16_25_5)) << (11))) | (FLD (f_imm16_10_11))))); 739 } 740 break; 741 case OR1K_OPERAND_UIMM6 : 742 length = extract_normal (cd, ex_info, insn_value, 0, 0, 5, 6, 32, total_length, pc, & fields->f_uimm6); 743 break; 744 745 default : 746 /* xgettext:c-format */ 747 fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"), 748 opindex); 749 abort (); 750 } 751 752 return length; 753 } 754 755 cgen_insert_fn * const or1k_cgen_insert_handlers[] = 756 { 757 insert_insn_normal, 758 }; 759 760 cgen_extract_fn * const or1k_cgen_extract_handlers[] = 761 { 762 extract_insn_normal, 763 }; 764 765 int or1k_cgen_get_int_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); 766 bfd_vma or1k_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); 767 768 /* Getting values from cgen_fields is handled by a collection of functions. 769 They are distinguished by the type of the VALUE argument they return. 770 TODO: floating point, inlining support, remove cases where result type 771 not appropriate. */ 772 773 int 774 or1k_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 775 int opindex, 776 const CGEN_FIELDS * fields) 777 { 778 int value; 779 780 switch (opindex) 781 { 782 case OR1K_OPERAND_DISP26 : 783 value = fields->f_disp26; 784 break; 785 case OR1K_OPERAND_RA : 786 value = fields->f_r2; 787 break; 788 case OR1K_OPERAND_RADF : 789 value = fields->f_r1; 790 break; 791 case OR1K_OPERAND_RASF : 792 value = fields->f_r2; 793 break; 794 case OR1K_OPERAND_RB : 795 value = fields->f_r3; 796 break; 797 case OR1K_OPERAND_RBDF : 798 value = fields->f_r1; 799 break; 800 case OR1K_OPERAND_RBSF : 801 value = fields->f_r3; 802 break; 803 case OR1K_OPERAND_RD : 804 value = fields->f_r1; 805 break; 806 case OR1K_OPERAND_RDDF : 807 value = fields->f_r1; 808 break; 809 case OR1K_OPERAND_RDSF : 810 value = fields->f_r1; 811 break; 812 case OR1K_OPERAND_SIMM16 : 813 value = fields->f_simm16; 814 break; 815 case OR1K_OPERAND_SIMM16_SPLIT : 816 value = fields->f_simm16_split; 817 break; 818 case OR1K_OPERAND_UIMM16 : 819 value = fields->f_uimm16; 820 break; 821 case OR1K_OPERAND_UIMM16_SPLIT : 822 value = fields->f_uimm16_split; 823 break; 824 case OR1K_OPERAND_UIMM6 : 825 value = fields->f_uimm6; 826 break; 827 828 default : 829 /* xgettext:c-format */ 830 fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"), 831 opindex); 832 abort (); 833 } 834 835 return value; 836 } 837 838 bfd_vma 839 or1k_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 840 int opindex, 841 const CGEN_FIELDS * fields) 842 { 843 bfd_vma value; 844 845 switch (opindex) 846 { 847 case OR1K_OPERAND_DISP26 : 848 value = fields->f_disp26; 849 break; 850 case OR1K_OPERAND_RA : 851 value = fields->f_r2; 852 break; 853 case OR1K_OPERAND_RADF : 854 value = fields->f_r1; 855 break; 856 case OR1K_OPERAND_RASF : 857 value = fields->f_r2; 858 break; 859 case OR1K_OPERAND_RB : 860 value = fields->f_r3; 861 break; 862 case OR1K_OPERAND_RBDF : 863 value = fields->f_r1; 864 break; 865 case OR1K_OPERAND_RBSF : 866 value = fields->f_r3; 867 break; 868 case OR1K_OPERAND_RD : 869 value = fields->f_r1; 870 break; 871 case OR1K_OPERAND_RDDF : 872 value = fields->f_r1; 873 break; 874 case OR1K_OPERAND_RDSF : 875 value = fields->f_r1; 876 break; 877 case OR1K_OPERAND_SIMM16 : 878 value = fields->f_simm16; 879 break; 880 case OR1K_OPERAND_SIMM16_SPLIT : 881 value = fields->f_simm16_split; 882 break; 883 case OR1K_OPERAND_UIMM16 : 884 value = fields->f_uimm16; 885 break; 886 case OR1K_OPERAND_UIMM16_SPLIT : 887 value = fields->f_uimm16_split; 888 break; 889 case OR1K_OPERAND_UIMM6 : 890 value = fields->f_uimm6; 891 break; 892 893 default : 894 /* xgettext:c-format */ 895 fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"), 896 opindex); 897 abort (); 898 } 899 900 return value; 901 } 902 903 void or1k_cgen_set_int_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, int); 904 void or1k_cgen_set_vma_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma); 905 906 /* Stuffing values in cgen_fields is handled by a collection of functions. 907 They are distinguished by the type of the VALUE argument they accept. 908 TODO: floating point, inlining support, remove cases where argument type 909 not appropriate. */ 910 911 void 912 or1k_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 913 int opindex, 914 CGEN_FIELDS * fields, 915 int value) 916 { 917 switch (opindex) 918 { 919 case OR1K_OPERAND_DISP26 : 920 fields->f_disp26 = value; 921 break; 922 case OR1K_OPERAND_RA : 923 fields->f_r2 = value; 924 break; 925 case OR1K_OPERAND_RADF : 926 fields->f_r1 = value; 927 break; 928 case OR1K_OPERAND_RASF : 929 fields->f_r2 = value; 930 break; 931 case OR1K_OPERAND_RB : 932 fields->f_r3 = value; 933 break; 934 case OR1K_OPERAND_RBDF : 935 fields->f_r1 = value; 936 break; 937 case OR1K_OPERAND_RBSF : 938 fields->f_r3 = value; 939 break; 940 case OR1K_OPERAND_RD : 941 fields->f_r1 = value; 942 break; 943 case OR1K_OPERAND_RDDF : 944 fields->f_r1 = value; 945 break; 946 case OR1K_OPERAND_RDSF : 947 fields->f_r1 = value; 948 break; 949 case OR1K_OPERAND_SIMM16 : 950 fields->f_simm16 = value; 951 break; 952 case OR1K_OPERAND_SIMM16_SPLIT : 953 fields->f_simm16_split = value; 954 break; 955 case OR1K_OPERAND_UIMM16 : 956 fields->f_uimm16 = value; 957 break; 958 case OR1K_OPERAND_UIMM16_SPLIT : 959 fields->f_uimm16_split = value; 960 break; 961 case OR1K_OPERAND_UIMM6 : 962 fields->f_uimm6 = value; 963 break; 964 965 default : 966 /* xgettext:c-format */ 967 fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"), 968 opindex); 969 abort (); 970 } 971 } 972 973 void 974 or1k_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 975 int opindex, 976 CGEN_FIELDS * fields, 977 bfd_vma value) 978 { 979 switch (opindex) 980 { 981 case OR1K_OPERAND_DISP26 : 982 fields->f_disp26 = value; 983 break; 984 case OR1K_OPERAND_RA : 985 fields->f_r2 = value; 986 break; 987 case OR1K_OPERAND_RADF : 988 fields->f_r1 = value; 989 break; 990 case OR1K_OPERAND_RASF : 991 fields->f_r2 = value; 992 break; 993 case OR1K_OPERAND_RB : 994 fields->f_r3 = value; 995 break; 996 case OR1K_OPERAND_RBDF : 997 fields->f_r1 = value; 998 break; 999 case OR1K_OPERAND_RBSF : 1000 fields->f_r3 = value; 1001 break; 1002 case OR1K_OPERAND_RD : 1003 fields->f_r1 = value; 1004 break; 1005 case OR1K_OPERAND_RDDF : 1006 fields->f_r1 = value; 1007 break; 1008 case OR1K_OPERAND_RDSF : 1009 fields->f_r1 = value; 1010 break; 1011 case OR1K_OPERAND_SIMM16 : 1012 fields->f_simm16 = value; 1013 break; 1014 case OR1K_OPERAND_SIMM16_SPLIT : 1015 fields->f_simm16_split = value; 1016 break; 1017 case OR1K_OPERAND_UIMM16 : 1018 fields->f_uimm16 = value; 1019 break; 1020 case OR1K_OPERAND_UIMM16_SPLIT : 1021 fields->f_uimm16_split = value; 1022 break; 1023 case OR1K_OPERAND_UIMM6 : 1024 fields->f_uimm6 = value; 1025 break; 1026 1027 default : 1028 /* xgettext:c-format */ 1029 fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"), 1030 opindex); 1031 abort (); 1032 } 1033 } 1034 1035 /* Function to call before using the instruction builder tables. */ 1036 1037 void 1038 or1k_cgen_init_ibld_table (CGEN_CPU_DESC cd) 1039 { 1040 cd->insert_handlers = & or1k_cgen_insert_handlers[0]; 1041 cd->extract_handlers = & or1k_cgen_extract_handlers[0]; 1042 1043 cd->insert_operand = or1k_cgen_insert_operand; 1044 cd->extract_operand = or1k_cgen_extract_operand; 1045 1046 cd->get_int_operand = or1k_cgen_get_int_operand; 1047 cd->set_int_operand = or1k_cgen_set_int_operand; 1048 cd->get_vma_operand = or1k_cgen_get_vma_operand; 1049 cd->set_vma_operand = or1k_cgen_set_vma_operand; 1050 } 1051