1 /* Instruction building/extraction support for ip2k. -*- 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 "ip2k-desc.h" 34 #include "ip2k-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 * ip2k_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 ip2k_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 IP2K_OPERAND_ADDR16CJP : 572 errmsg = insert_normal (cd, fields->f_addr16cjp, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, buffer); 573 break; 574 case IP2K_OPERAND_ADDR16H : 575 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer); 576 break; 577 case IP2K_OPERAND_ADDR16L : 578 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer); 579 break; 580 case IP2K_OPERAND_ADDR16P : 581 errmsg = insert_normal (cd, fields->f_page3, 0, 0, 2, 3, 16, total_length, buffer); 582 break; 583 case IP2K_OPERAND_BITNO : 584 errmsg = insert_normal (cd, fields->f_bitno, 0, 0, 11, 3, 16, total_length, buffer); 585 break; 586 case IP2K_OPERAND_CBIT : 587 break; 588 case IP2K_OPERAND_DCBIT : 589 break; 590 case IP2K_OPERAND_FR : 591 errmsg = insert_normal (cd, fields->f_reg, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, buffer); 592 break; 593 case IP2K_OPERAND_LIT8 : 594 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer); 595 break; 596 case IP2K_OPERAND_PABITS : 597 break; 598 case IP2K_OPERAND_RETI3 : 599 errmsg = insert_normal (cd, fields->f_reti3, 0, 0, 2, 3, 16, total_length, buffer); 600 break; 601 case IP2K_OPERAND_ZBIT : 602 break; 603 604 default : 605 /* xgettext:c-format */ 606 fprintf (stderr, _("Unrecognized field %d while building insn.\n"), 607 opindex); 608 abort (); 609 } 610 611 return errmsg; 612 } 613 614 int ip2k_cgen_extract_operand 615 (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); 616 617 /* Main entry point for operand extraction. 618 The result is <= 0 for error, >0 for success. 619 ??? Actual values aren't well defined right now. 620 621 This function is basically just a big switch statement. Earlier versions 622 used tables to look up the function to use, but 623 - if the table contains both assembler and disassembler functions then 624 the disassembler contains much of the assembler and vice-versa, 625 - there's a lot of inlining possibilities as things grow, 626 - using a switch statement avoids the function call overhead. 627 628 This function could be moved into `print_insn_normal', but keeping it 629 separate makes clear the interface between `print_insn_normal' and each of 630 the handlers. */ 631 632 int 633 ip2k_cgen_extract_operand (CGEN_CPU_DESC cd, 634 int opindex, 635 CGEN_EXTRACT_INFO *ex_info, 636 CGEN_INSN_INT insn_value, 637 CGEN_FIELDS * fields, 638 bfd_vma pc) 639 { 640 /* Assume success (for those operands that are nops). */ 641 int length = 1; 642 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); 643 644 switch (opindex) 645 { 646 case IP2K_OPERAND_ADDR16CJP : 647 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, pc, & fields->f_addr16cjp); 648 break; 649 case IP2K_OPERAND_ADDR16H : 650 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8); 651 break; 652 case IP2K_OPERAND_ADDR16L : 653 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8); 654 break; 655 case IP2K_OPERAND_ADDR16P : 656 length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_page3); 657 break; 658 case IP2K_OPERAND_BITNO : 659 length = extract_normal (cd, ex_info, insn_value, 0, 0, 11, 3, 16, total_length, pc, & fields->f_bitno); 660 break; 661 case IP2K_OPERAND_CBIT : 662 break; 663 case IP2K_OPERAND_DCBIT : 664 break; 665 case IP2K_OPERAND_FR : 666 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, pc, & fields->f_reg); 667 break; 668 case IP2K_OPERAND_LIT8 : 669 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8); 670 break; 671 case IP2K_OPERAND_PABITS : 672 break; 673 case IP2K_OPERAND_RETI3 : 674 length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_reti3); 675 break; 676 case IP2K_OPERAND_ZBIT : 677 break; 678 679 default : 680 /* xgettext:c-format */ 681 fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"), 682 opindex); 683 abort (); 684 } 685 686 return length; 687 } 688 689 cgen_insert_fn * const ip2k_cgen_insert_handlers[] = 690 { 691 insert_insn_normal, 692 }; 693 694 cgen_extract_fn * const ip2k_cgen_extract_handlers[] = 695 { 696 extract_insn_normal, 697 }; 698 699 int ip2k_cgen_get_int_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); 700 bfd_vma ip2k_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); 701 702 /* Getting values from cgen_fields is handled by a collection of functions. 703 They are distinguished by the type of the VALUE argument they return. 704 TODO: floating point, inlining support, remove cases where result type 705 not appropriate. */ 706 707 int 708 ip2k_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 709 int opindex, 710 const CGEN_FIELDS * fields) 711 { 712 int value; 713 714 switch (opindex) 715 { 716 case IP2K_OPERAND_ADDR16CJP : 717 value = fields->f_addr16cjp; 718 break; 719 case IP2K_OPERAND_ADDR16H : 720 value = fields->f_imm8; 721 break; 722 case IP2K_OPERAND_ADDR16L : 723 value = fields->f_imm8; 724 break; 725 case IP2K_OPERAND_ADDR16P : 726 value = fields->f_page3; 727 break; 728 case IP2K_OPERAND_BITNO : 729 value = fields->f_bitno; 730 break; 731 case IP2K_OPERAND_CBIT : 732 value = 0; 733 break; 734 case IP2K_OPERAND_DCBIT : 735 value = 0; 736 break; 737 case IP2K_OPERAND_FR : 738 value = fields->f_reg; 739 break; 740 case IP2K_OPERAND_LIT8 : 741 value = fields->f_imm8; 742 break; 743 case IP2K_OPERAND_PABITS : 744 value = 0; 745 break; 746 case IP2K_OPERAND_RETI3 : 747 value = fields->f_reti3; 748 break; 749 case IP2K_OPERAND_ZBIT : 750 value = 0; 751 break; 752 753 default : 754 /* xgettext:c-format */ 755 fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"), 756 opindex); 757 abort (); 758 } 759 760 return value; 761 } 762 763 bfd_vma 764 ip2k_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 765 int opindex, 766 const CGEN_FIELDS * fields) 767 { 768 bfd_vma value; 769 770 switch (opindex) 771 { 772 case IP2K_OPERAND_ADDR16CJP : 773 value = fields->f_addr16cjp; 774 break; 775 case IP2K_OPERAND_ADDR16H : 776 value = fields->f_imm8; 777 break; 778 case IP2K_OPERAND_ADDR16L : 779 value = fields->f_imm8; 780 break; 781 case IP2K_OPERAND_ADDR16P : 782 value = fields->f_page3; 783 break; 784 case IP2K_OPERAND_BITNO : 785 value = fields->f_bitno; 786 break; 787 case IP2K_OPERAND_CBIT : 788 value = 0; 789 break; 790 case IP2K_OPERAND_DCBIT : 791 value = 0; 792 break; 793 case IP2K_OPERAND_FR : 794 value = fields->f_reg; 795 break; 796 case IP2K_OPERAND_LIT8 : 797 value = fields->f_imm8; 798 break; 799 case IP2K_OPERAND_PABITS : 800 value = 0; 801 break; 802 case IP2K_OPERAND_RETI3 : 803 value = fields->f_reti3; 804 break; 805 case IP2K_OPERAND_ZBIT : 806 value = 0; 807 break; 808 809 default : 810 /* xgettext:c-format */ 811 fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"), 812 opindex); 813 abort (); 814 } 815 816 return value; 817 } 818 819 void ip2k_cgen_set_int_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, int); 820 void ip2k_cgen_set_vma_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma); 821 822 /* Stuffing values in cgen_fields is handled by a collection of functions. 823 They are distinguished by the type of the VALUE argument they accept. 824 TODO: floating point, inlining support, remove cases where argument type 825 not appropriate. */ 826 827 void 828 ip2k_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 829 int opindex, 830 CGEN_FIELDS * fields, 831 int value) 832 { 833 switch (opindex) 834 { 835 case IP2K_OPERAND_ADDR16CJP : 836 fields->f_addr16cjp = value; 837 break; 838 case IP2K_OPERAND_ADDR16H : 839 fields->f_imm8 = value; 840 break; 841 case IP2K_OPERAND_ADDR16L : 842 fields->f_imm8 = value; 843 break; 844 case IP2K_OPERAND_ADDR16P : 845 fields->f_page3 = value; 846 break; 847 case IP2K_OPERAND_BITNO : 848 fields->f_bitno = value; 849 break; 850 case IP2K_OPERAND_CBIT : 851 break; 852 case IP2K_OPERAND_DCBIT : 853 break; 854 case IP2K_OPERAND_FR : 855 fields->f_reg = value; 856 break; 857 case IP2K_OPERAND_LIT8 : 858 fields->f_imm8 = value; 859 break; 860 case IP2K_OPERAND_PABITS : 861 break; 862 case IP2K_OPERAND_RETI3 : 863 fields->f_reti3 = value; 864 break; 865 case IP2K_OPERAND_ZBIT : 866 break; 867 868 default : 869 /* xgettext:c-format */ 870 fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"), 871 opindex); 872 abort (); 873 } 874 } 875 876 void 877 ip2k_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 878 int opindex, 879 CGEN_FIELDS * fields, 880 bfd_vma value) 881 { 882 switch (opindex) 883 { 884 case IP2K_OPERAND_ADDR16CJP : 885 fields->f_addr16cjp = value; 886 break; 887 case IP2K_OPERAND_ADDR16H : 888 fields->f_imm8 = value; 889 break; 890 case IP2K_OPERAND_ADDR16L : 891 fields->f_imm8 = value; 892 break; 893 case IP2K_OPERAND_ADDR16P : 894 fields->f_page3 = value; 895 break; 896 case IP2K_OPERAND_BITNO : 897 fields->f_bitno = value; 898 break; 899 case IP2K_OPERAND_CBIT : 900 break; 901 case IP2K_OPERAND_DCBIT : 902 break; 903 case IP2K_OPERAND_FR : 904 fields->f_reg = value; 905 break; 906 case IP2K_OPERAND_LIT8 : 907 fields->f_imm8 = value; 908 break; 909 case IP2K_OPERAND_PABITS : 910 break; 911 case IP2K_OPERAND_RETI3 : 912 fields->f_reti3 = value; 913 break; 914 case IP2K_OPERAND_ZBIT : 915 break; 916 917 default : 918 /* xgettext:c-format */ 919 fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"), 920 opindex); 921 abort (); 922 } 923 } 924 925 /* Function to call before using the instruction builder tables. */ 926 927 void 928 ip2k_cgen_init_ibld_table (CGEN_CPU_DESC cd) 929 { 930 cd->insert_handlers = & ip2k_cgen_insert_handlers[0]; 931 cd->extract_handlers = & ip2k_cgen_extract_handlers[0]; 932 933 cd->insert_operand = ip2k_cgen_insert_operand; 934 cd->extract_operand = ip2k_cgen_extract_operand; 935 936 cd->get_int_operand = ip2k_cgen_get_int_operand; 937 cd->set_int_operand = ip2k_cgen_set_int_operand; 938 cd->get_vma_operand = ip2k_cgen_get_vma_operand; 939 cd->set_vma_operand = ip2k_cgen_set_vma_operand; 940 } 941
