1 /* DO NOT EDIT! -*- buffer-read-only: t -*- vi:set ro: */ 2 /* Instruction building/extraction support for ip2k. -*- C -*- 3 4 THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator. 5 - the resultant file is machine generated, cgen-ibld.in isn't 6 7 Copyright (C) 1996-2018 Free Software Foundation, Inc. 8 9 This file is part of libopcodes. 10 11 This library is free software; you can redistribute it and/or modify 12 it under the terms of the GNU General Public License as published by 13 the Free Software Foundation; either version 3, or (at your option) 14 any later version. 15 16 It is distributed in the hope that it will be useful, but WITHOUT 17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 18 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 19 License for more details. 20 21 You should have received a copy of the GNU General Public License 22 along with this program; if not, write to the Free Software Foundation, Inc., 23 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 24 25 /* ??? Eventually more and more of this stuff can go to cpu-independent files. 26 Keep that in mind. */ 27 28 #include "sysdep.h" 29 #include <stdio.h> 30 #include "ansidecl.h" 31 #include "dis-asm.h" 32 #include "bfd.h" 33 #include "symcat.h" 34 #include "ip2k-desc.h" 35 #include "ip2k-opc.h" 36 #include "cgen/basic-modes.h" 37 #include "opintl.h" 38 #include "safe-ctype.h" 39 40 #undef min 41 #define min(a,b) ((a) < (b) ? (a) : (b)) 42 #undef max 43 #define max(a,b) ((a) > (b) ? (a) : (b)) 44 45 /* Used by the ifield rtx function. */ 46 #define FLD(f) (fields->f) 47 48 static const char * insert_normal 49 (CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int, 50 unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR); 51 static const char * insert_insn_normal 52 (CGEN_CPU_DESC, const CGEN_INSN *, 53 CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma); 54 static int extract_normal 55 (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, 56 unsigned int, unsigned int, unsigned int, unsigned int, 57 unsigned int, unsigned int, bfd_vma, long *); 58 static int extract_insn_normal 59 (CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *, 60 CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); 61 #if CGEN_INT_INSN_P 62 static void put_insn_int_value 63 (CGEN_CPU_DESC, CGEN_INSN_BYTES_PTR, int, int, CGEN_INSN_INT); 64 #endif 65 #if ! CGEN_INT_INSN_P 66 static CGEN_INLINE void insert_1 67 (CGEN_CPU_DESC, unsigned long, int, int, int, unsigned char *); 68 static CGEN_INLINE int fill_cache 69 (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, bfd_vma); 70 static CGEN_INLINE long extract_1 71 (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, int, unsigned char *, bfd_vma); 72 #endif 73 74 /* 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_within_word, shift_to_word, shift; 212 213 /* How to shift the value to BIT0 of the word. */ 214 shift_to_word = total_length - (word_offset + word_length); 215 216 /* How to shift the value to the field within the word. */ 217 if (CGEN_INSN_LSB0_P) 218 shift_within_word = start + 1 - length; 219 else 220 shift_within_word = word_length - start - length; 221 222 /* The total SHIFT, then mask in the value. */ 223 shift = shift_to_word + shift_within_word; 224 *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift); 225 } 226 227 #else /* ! CGEN_INT_INSN_P */ 228 229 { 230 unsigned char *bufp = (unsigned char *) buffer + word_offset / 8; 231 232 insert_1 (cd, value, start, length, word_length, bufp); 233 } 234 235 #endif /* ! CGEN_INT_INSN_P */ 236 237 return NULL; 238 } 239 240 /* Default insn builder (insert handler). 241 The instruction is recorded in CGEN_INT_INSN_P byte order (meaning 242 that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is 243 recorded in host byte order, otherwise BUFFER is an array of bytes 244 and the value is recorded in target byte order). 245 The result is an error message or NULL if success. */ 246 247 static const char * 248 insert_insn_normal (CGEN_CPU_DESC cd, 249 const CGEN_INSN * insn, 250 CGEN_FIELDS * fields, 251 CGEN_INSN_BYTES_PTR buffer, 252 bfd_vma pc) 253 { 254 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 255 unsigned long value; 256 const CGEN_SYNTAX_CHAR_TYPE * syn; 257 258 CGEN_INIT_INSERT (cd); 259 value = CGEN_INSN_BASE_VALUE (insn); 260 261 /* If we're recording insns as numbers (rather than a string of bytes), 262 target byte order handling is deferred until later. */ 263 264 #if CGEN_INT_INSN_P 265 266 put_insn_int_value (cd, buffer, cd->base_insn_bitsize, 267 CGEN_FIELDS_BITSIZE (fields), value); 268 269 #else 270 271 cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize, 272 (unsigned) CGEN_FIELDS_BITSIZE (fields)), 273 value); 274 275 #endif /* ! CGEN_INT_INSN_P */ 276 277 /* ??? It would be better to scan the format's fields. 278 Still need to be able to insert a value based on the operand though; 279 e.g. storing a branch displacement that got resolved later. 280 Needs more thought first. */ 281 282 for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn) 283 { 284 const char *errmsg; 285 286 if (CGEN_SYNTAX_CHAR_P (* syn)) 287 continue; 288 289 errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn), 290 fields, buffer, pc); 291 if (errmsg) 292 return errmsg; 293 } 294 295 return NULL; 296 } 297 298 #if CGEN_INT_INSN_P 299 /* Cover function to store an insn value into an integral insn. Must go here 300 because it needs <prefix>-desc.h for CGEN_INT_INSN_P. */ 301 302 static void 303 put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 304 CGEN_INSN_BYTES_PTR buf, 305 int length, 306 int insn_length, 307 CGEN_INSN_INT value) 308 { 309 /* For architectures with insns smaller than the base-insn-bitsize, 310 length may be too big. */ 311 if (length > insn_length) 312 *buf = value; 313 else 314 { 315 int shift = insn_length - length; 316 /* Written this way to avoid undefined behaviour. */ 317 CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1; 318 319 *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift); 320 } 321 } 322 #endif 323 324 /* Operand extraction. */ 325 326 #if ! CGEN_INT_INSN_P 327 328 /* Subroutine of extract_normal. 329 Ensure sufficient bytes are cached in EX_INFO. 330 OFFSET is the offset in bytes from the start of the insn of the value. 331 BYTES is the length of the needed value. 332 Returns 1 for success, 0 for failure. */ 333 334 static CGEN_INLINE int 335 fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 336 CGEN_EXTRACT_INFO *ex_info, 337 int offset, 338 int bytes, 339 bfd_vma pc) 340 { 341 /* It's doubtful that the middle part has already been fetched so 342 we don't optimize that case. kiss. */ 343 unsigned int mask; 344 disassemble_info *info = (disassemble_info *) ex_info->dis_info; 345 346 /* First do a quick check. */ 347 mask = (1 << bytes) - 1; 348 if (((ex_info->valid >> offset) & mask) == mask) 349 return 1; 350 351 /* Search for the first byte we need to read. */ 352 for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1) 353 if (! (mask & ex_info->valid)) 354 break; 355 356 if (bytes) 357 { 358 int status; 359 360 pc += offset; 361 status = (*info->read_memory_func) 362 (pc, ex_info->insn_bytes + offset, bytes, info); 363 364 if (status != 0) 365 { 366 (*info->memory_error_func) (status, pc, info); 367 return 0; 368 } 369 370 ex_info->valid |= ((1 << bytes) - 1) << offset; 371 } 372 373 return 1; 374 } 375 376 /* Subroutine of extract_normal. */ 377 378 static CGEN_INLINE long 379 extract_1 (CGEN_CPU_DESC cd, 380 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, 381 int start, 382 int length, 383 int word_length, 384 unsigned char *bufp, 385 bfd_vma pc ATTRIBUTE_UNUSED) 386 { 387 unsigned long x; 388 int shift; 389 390 x = cgen_get_insn_value (cd, bufp, word_length); 391 392 if (CGEN_INSN_LSB0_P) 393 shift = (start + 1) - length; 394 else 395 shift = (word_length - (start + length)); 396 return x >> shift; 397 } 398 399 #endif /* ! CGEN_INT_INSN_P */ 400 401 /* Default extraction routine. 402 403 INSN_VALUE is the first base_insn_bitsize bits of the insn in host order, 404 or sometimes less for cases like the m32r where the base insn size is 32 405 but some insns are 16 bits. 406 ATTRS is a mask of the boolean attributes. We only need `SIGNED', 407 but for generality we take a bitmask of all of them. 408 WORD_OFFSET is the offset in bits from the start of the insn of the value. 409 WORD_LENGTH is the length of the word in bits in which the value resides. 410 START is the starting bit number in the word, architecture origin. 411 LENGTH is the length of VALUE in bits. 412 TOTAL_LENGTH is the total length of the insn in bits. 413 414 Returns 1 for success, 0 for failure. */ 415 416 /* ??? The return code isn't properly used. wip. */ 417 418 /* ??? This doesn't handle bfd_vma's. Create another function when 419 necessary. */ 420 421 static int 422 extract_normal (CGEN_CPU_DESC cd, 423 #if ! CGEN_INT_INSN_P 424 CGEN_EXTRACT_INFO *ex_info, 425 #else 426 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, 427 #endif 428 CGEN_INSN_INT insn_value, 429 unsigned int attrs, 430 unsigned int word_offset, 431 unsigned int start, 432 unsigned int length, 433 unsigned int word_length, 434 unsigned int total_length, 435 #if ! CGEN_INT_INSN_P 436 bfd_vma pc, 437 #else 438 bfd_vma pc ATTRIBUTE_UNUSED, 439 #endif 440 long *valuep) 441 { 442 long value, mask; 443 444 /* If LENGTH is zero, this operand doesn't contribute to the value 445 so give it a standard value of zero. */ 446 if (length == 0) 447 { 448 *valuep = 0; 449 return 1; 450 } 451 452 if (word_length > 8 * sizeof (CGEN_INSN_INT)) 453 abort (); 454 455 /* For architectures with insns smaller than the insn-base-bitsize, 456 word_length may be too big. */ 457 if (cd->min_insn_bitsize < cd->base_insn_bitsize) 458 { 459 if (word_offset + word_length > total_length) 460 word_length = total_length - word_offset; 461 } 462 463 /* Does the value reside in INSN_VALUE, and at the right alignment? */ 464 465 if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length)) 466 { 467 if (CGEN_INSN_LSB0_P) 468 value = insn_value >> ((word_offset + start + 1) - length); 469 else 470 value = insn_value >> (total_length - ( word_offset + start + length)); 471 } 472 473 #if ! CGEN_INT_INSN_P 474 475 else 476 { 477 unsigned char *bufp = ex_info->insn_bytes + word_offset / 8; 478 479 if (word_length > 8 * sizeof (CGEN_INSN_INT)) 480 abort (); 481 482 if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0) 483 return 0; 484 485 value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc); 486 } 487 488 #endif /* ! CGEN_INT_INSN_P */ 489 490 /* Written this way to avoid undefined behaviour. */ 491 mask = (((1L << (length - 1)) - 1) << 1) | 1; 492 493 value &= mask; 494 /* sign extend? */ 495 if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED) 496 && (value & (1L << (length - 1)))) 497 value |= ~mask; 498 499 *valuep = value; 500 501 return 1; 502 } 503 504 /* Default insn extractor. 505 506 INSN_VALUE is the first base_insn_bitsize bits, translated to host order. 507 The extracted fields are stored in FIELDS. 508 EX_INFO is used to handle reading variable length insns. 509 Return the length of the insn in bits, or 0 if no match, 510 or -1 if an error occurs fetching data (memory_error_func will have 511 been called). */ 512 513 static int 514 extract_insn_normal (CGEN_CPU_DESC cd, 515 const CGEN_INSN *insn, 516 CGEN_EXTRACT_INFO *ex_info, 517 CGEN_INSN_INT insn_value, 518 CGEN_FIELDS *fields, 519 bfd_vma pc) 520 { 521 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 522 const CGEN_SYNTAX_CHAR_TYPE *syn; 523 524 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 525 526 CGEN_INIT_EXTRACT (cd); 527 528 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) 529 { 530 int length; 531 532 if (CGEN_SYNTAX_CHAR_P (*syn)) 533 continue; 534 535 length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn), 536 ex_info, insn_value, fields, pc); 537 if (length <= 0) 538 return length; 539 } 540 541 /* We recognized and successfully extracted this insn. */ 542 return CGEN_INSN_BITSIZE (insn); 543 } 544 545 /* Machine generated code added here. */ 546 547 const char * ip2k_cgen_insert_operand 548 (CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma); 549 550 /* Main entry point for operand insertion. 551 552 This function is basically just a big switch statement. Earlier versions 553 used tables to look up the function to use, but 554 - if the table contains both assembler and disassembler functions then 555 the disassembler contains much of the assembler and vice-versa, 556 - there's a lot of inlining possibilities as things grow, 557 - using a switch statement avoids the function call overhead. 558 559 This function could be moved into `parse_insn_normal', but keeping it 560 separate makes clear the interface between `parse_insn_normal' and each of 561 the handlers. It's also needed by GAS to insert operands that couldn't be 562 resolved during parsing. */ 563 564 const char * 565 ip2k_cgen_insert_operand (CGEN_CPU_DESC cd, 566 int opindex, 567 CGEN_FIELDS * fields, 568 CGEN_INSN_BYTES_PTR buffer, 569 bfd_vma pc ATTRIBUTE_UNUSED) 570 { 571 const char * errmsg = NULL; 572 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); 573 574 switch (opindex) 575 { 576 case IP2K_OPERAND_ADDR16CJP : 577 errmsg = insert_normal (cd, fields->f_addr16cjp, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, buffer); 578 break; 579 case IP2K_OPERAND_ADDR16H : 580 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer); 581 break; 582 case IP2K_OPERAND_ADDR16L : 583 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer); 584 break; 585 case IP2K_OPERAND_ADDR16P : 586 errmsg = insert_normal (cd, fields->f_page3, 0, 0, 2, 3, 16, total_length, buffer); 587 break; 588 case IP2K_OPERAND_BITNO : 589 errmsg = insert_normal (cd, fields->f_bitno, 0, 0, 11, 3, 16, total_length, buffer); 590 break; 591 case IP2K_OPERAND_CBIT : 592 break; 593 case IP2K_OPERAND_DCBIT : 594 break; 595 case IP2K_OPERAND_FR : 596 errmsg = insert_normal (cd, fields->f_reg, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, buffer); 597 break; 598 case IP2K_OPERAND_LIT8 : 599 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer); 600 break; 601 case IP2K_OPERAND_PABITS : 602 break; 603 case IP2K_OPERAND_RETI3 : 604 errmsg = insert_normal (cd, fields->f_reti3, 0, 0, 2, 3, 16, total_length, buffer); 605 break; 606 case IP2K_OPERAND_ZBIT : 607 break; 608 609 default : 610 /* xgettext:c-format */ 611 opcodes_error_handler 612 (_("internal error: unrecognized field %d while building insn"), 613 opindex); 614 abort (); 615 } 616 617 return errmsg; 618 } 619 620 int ip2k_cgen_extract_operand 621 (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); 622 623 /* Main entry point for operand extraction. 624 The result is <= 0 for error, >0 for success. 625 ??? Actual values aren't well defined right now. 626 627 This function is basically just a big switch statement. Earlier versions 628 used tables to look up the function to use, but 629 - if the table contains both assembler and disassembler functions then 630 the disassembler contains much of the assembler and vice-versa, 631 - there's a lot of inlining possibilities as things grow, 632 - using a switch statement avoids the function call overhead. 633 634 This function could be moved into `print_insn_normal', but keeping it 635 separate makes clear the interface between `print_insn_normal' and each of 636 the handlers. */ 637 638 int 639 ip2k_cgen_extract_operand (CGEN_CPU_DESC cd, 640 int opindex, 641 CGEN_EXTRACT_INFO *ex_info, 642 CGEN_INSN_INT insn_value, 643 CGEN_FIELDS * fields, 644 bfd_vma pc) 645 { 646 /* Assume success (for those operands that are nops). */ 647 int length = 1; 648 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); 649 650 switch (opindex) 651 { 652 case IP2K_OPERAND_ADDR16CJP : 653 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, pc, & fields->f_addr16cjp); 654 break; 655 case IP2K_OPERAND_ADDR16H : 656 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8); 657 break; 658 case IP2K_OPERAND_ADDR16L : 659 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8); 660 break; 661 case IP2K_OPERAND_ADDR16P : 662 length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_page3); 663 break; 664 case IP2K_OPERAND_BITNO : 665 length = extract_normal (cd, ex_info, insn_value, 0, 0, 11, 3, 16, total_length, pc, & fields->f_bitno); 666 break; 667 case IP2K_OPERAND_CBIT : 668 break; 669 case IP2K_OPERAND_DCBIT : 670 break; 671 case IP2K_OPERAND_FR : 672 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, pc, & fields->f_reg); 673 break; 674 case IP2K_OPERAND_LIT8 : 675 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8); 676 break; 677 case IP2K_OPERAND_PABITS : 678 break; 679 case IP2K_OPERAND_RETI3 : 680 length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_reti3); 681 break; 682 case IP2K_OPERAND_ZBIT : 683 break; 684 685 default : 686 /* xgettext:c-format */ 687 opcodes_error_handler 688 (_("internal error: unrecognized field %d while decoding insn"), 689 opindex); 690 abort (); 691 } 692 693 return length; 694 } 695 696 cgen_insert_fn * const ip2k_cgen_insert_handlers[] = 697 { 698 insert_insn_normal, 699 }; 700 701 cgen_extract_fn * const ip2k_cgen_extract_handlers[] = 702 { 703 extract_insn_normal, 704 }; 705 706 int ip2k_cgen_get_int_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); 707 bfd_vma ip2k_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); 708 709 /* Getting values from cgen_fields is handled by a collection of functions. 710 They are distinguished by the type of the VALUE argument they return. 711 TODO: floating point, inlining support, remove cases where result type 712 not appropriate. */ 713 714 int 715 ip2k_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 716 int opindex, 717 const CGEN_FIELDS * fields) 718 { 719 int value; 720 721 switch (opindex) 722 { 723 case IP2K_OPERAND_ADDR16CJP : 724 value = fields->f_addr16cjp; 725 break; 726 case IP2K_OPERAND_ADDR16H : 727 value = fields->f_imm8; 728 break; 729 case IP2K_OPERAND_ADDR16L : 730 value = fields->f_imm8; 731 break; 732 case IP2K_OPERAND_ADDR16P : 733 value = fields->f_page3; 734 break; 735 case IP2K_OPERAND_BITNO : 736 value = fields->f_bitno; 737 break; 738 case IP2K_OPERAND_CBIT : 739 value = 0; 740 break; 741 case IP2K_OPERAND_DCBIT : 742 value = 0; 743 break; 744 case IP2K_OPERAND_FR : 745 value = fields->f_reg; 746 break; 747 case IP2K_OPERAND_LIT8 : 748 value = fields->f_imm8; 749 break; 750 case IP2K_OPERAND_PABITS : 751 value = 0; 752 break; 753 case IP2K_OPERAND_RETI3 : 754 value = fields->f_reti3; 755 break; 756 case IP2K_OPERAND_ZBIT : 757 value = 0; 758 break; 759 760 default : 761 /* xgettext:c-format */ 762 opcodes_error_handler 763 (_("internal error: unrecognized field %d while getting int operand"), 764 opindex); 765 abort (); 766 } 767 768 return value; 769 } 770 771 bfd_vma 772 ip2k_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 773 int opindex, 774 const CGEN_FIELDS * fields) 775 { 776 bfd_vma value; 777 778 switch (opindex) 779 { 780 case IP2K_OPERAND_ADDR16CJP : 781 value = fields->f_addr16cjp; 782 break; 783 case IP2K_OPERAND_ADDR16H : 784 value = fields->f_imm8; 785 break; 786 case IP2K_OPERAND_ADDR16L : 787 value = fields->f_imm8; 788 break; 789 case IP2K_OPERAND_ADDR16P : 790 value = fields->f_page3; 791 break; 792 case IP2K_OPERAND_BITNO : 793 value = fields->f_bitno; 794 break; 795 case IP2K_OPERAND_CBIT : 796 value = 0; 797 break; 798 case IP2K_OPERAND_DCBIT : 799 value = 0; 800 break; 801 case IP2K_OPERAND_FR : 802 value = fields->f_reg; 803 break; 804 case IP2K_OPERAND_LIT8 : 805 value = fields->f_imm8; 806 break; 807 case IP2K_OPERAND_PABITS : 808 value = 0; 809 break; 810 case IP2K_OPERAND_RETI3 : 811 value = fields->f_reti3; 812 break; 813 case IP2K_OPERAND_ZBIT : 814 value = 0; 815 break; 816 817 default : 818 /* xgettext:c-format */ 819 opcodes_error_handler 820 (_("internal error: unrecognized field %d while getting vma operand"), 821 opindex); 822 abort (); 823 } 824 825 return value; 826 } 827 828 void ip2k_cgen_set_int_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, int); 829 void ip2k_cgen_set_vma_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma); 830 831 /* Stuffing values in cgen_fields is handled by a collection of functions. 832 They are distinguished by the type of the VALUE argument they accept. 833 TODO: floating point, inlining support, remove cases where argument type 834 not appropriate. */ 835 836 void 837 ip2k_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 838 int opindex, 839 CGEN_FIELDS * fields, 840 int value) 841 { 842 switch (opindex) 843 { 844 case IP2K_OPERAND_ADDR16CJP : 845 fields->f_addr16cjp = value; 846 break; 847 case IP2K_OPERAND_ADDR16H : 848 fields->f_imm8 = value; 849 break; 850 case IP2K_OPERAND_ADDR16L : 851 fields->f_imm8 = value; 852 break; 853 case IP2K_OPERAND_ADDR16P : 854 fields->f_page3 = value; 855 break; 856 case IP2K_OPERAND_BITNO : 857 fields->f_bitno = value; 858 break; 859 case IP2K_OPERAND_CBIT : 860 break; 861 case IP2K_OPERAND_DCBIT : 862 break; 863 case IP2K_OPERAND_FR : 864 fields->f_reg = value; 865 break; 866 case IP2K_OPERAND_LIT8 : 867 fields->f_imm8 = value; 868 break; 869 case IP2K_OPERAND_PABITS : 870 break; 871 case IP2K_OPERAND_RETI3 : 872 fields->f_reti3 = value; 873 break; 874 case IP2K_OPERAND_ZBIT : 875 break; 876 877 default : 878 /* xgettext:c-format */ 879 opcodes_error_handler 880 (_("internal error: unrecognized field %d while setting int operand"), 881 opindex); 882 abort (); 883 } 884 } 885 886 void 887 ip2k_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 888 int opindex, 889 CGEN_FIELDS * fields, 890 bfd_vma value) 891 { 892 switch (opindex) 893 { 894 case IP2K_OPERAND_ADDR16CJP : 895 fields->f_addr16cjp = value; 896 break; 897 case IP2K_OPERAND_ADDR16H : 898 fields->f_imm8 = value; 899 break; 900 case IP2K_OPERAND_ADDR16L : 901 fields->f_imm8 = value; 902 break; 903 case IP2K_OPERAND_ADDR16P : 904 fields->f_page3 = value; 905 break; 906 case IP2K_OPERAND_BITNO : 907 fields->f_bitno = value; 908 break; 909 case IP2K_OPERAND_CBIT : 910 break; 911 case IP2K_OPERAND_DCBIT : 912 break; 913 case IP2K_OPERAND_FR : 914 fields->f_reg = value; 915 break; 916 case IP2K_OPERAND_LIT8 : 917 fields->f_imm8 = value; 918 break; 919 case IP2K_OPERAND_PABITS : 920 break; 921 case IP2K_OPERAND_RETI3 : 922 fields->f_reti3 = value; 923 break; 924 case IP2K_OPERAND_ZBIT : 925 break; 926 927 default : 928 /* xgettext:c-format */ 929 opcodes_error_handler 930 (_("internal error: unrecognized field %d while setting vma operand"), 931 opindex); 932 abort (); 933 } 934 } 935 936 /* Function to call before using the instruction builder tables. */ 937 938 void 939 ip2k_cgen_init_ibld_table (CGEN_CPU_DESC cd) 940 { 941 cd->insert_handlers = & ip2k_cgen_insert_handlers[0]; 942 cd->extract_handlers = & ip2k_cgen_extract_handlers[0]; 943 944 cd->insert_operand = ip2k_cgen_insert_operand; 945 cd->extract_operand = ip2k_cgen_extract_operand; 946 947 cd->get_int_operand = ip2k_cgen_get_int_operand; 948 cd->set_int_operand = ip2k_cgen_set_int_operand; 949 cd->get_vma_operand = ip2k_cgen_get_vma_operand; 950 cd->set_vma_operand = ip2k_cgen_set_vma_operand; 951 } 952