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) 1996-2016 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_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. */ 326 327 #if ! CGEN_INT_INSN_P 328 329 /* Subroutine of extract_normal. 330 Ensure sufficient bytes are cached in EX_INFO. 331 OFFSET is the offset in bytes from the start of the insn of the value. 332 BYTES is the length of the needed value. 333 Returns 1 for success, 0 for failure. */ 334 335 static CGEN_INLINE int 336 fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 337 CGEN_EXTRACT_INFO *ex_info, 338 int offset, 339 int bytes, 340 bfd_vma pc) 341 { 342 /* It's doubtful that the middle part has already been fetched so 343 we don't optimize that case. kiss. */ 344 unsigned int mask; 345 disassemble_info *info = (disassemble_info *) ex_info->dis_info; 346 347 /* First do a quick check. */ 348 mask = (1 << bytes) - 1; 349 if (((ex_info->valid >> offset) & mask) == mask) 350 return 1; 351 352 /* Search for the first byte we need to read. */ 353 for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1) 354 if (! (mask & ex_info->valid)) 355 break; 356 357 if (bytes) 358 { 359 int status; 360 361 pc += offset; 362 status = (*info->read_memory_func) 363 (pc, ex_info->insn_bytes + offset, bytes, info); 364 365 if (status != 0) 366 { 367 (*info->memory_error_func) (status, pc, info); 368 return 0; 369 } 370 371 ex_info->valid |= ((1 << bytes) - 1) << offset; 372 } 373 374 return 1; 375 } 376 377 /* Subroutine of extract_normal. */ 378 379 static CGEN_INLINE long 380 extract_1 (CGEN_CPU_DESC cd, 381 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, 382 int start, 383 int length, 384 int word_length, 385 unsigned char *bufp, 386 bfd_vma pc ATTRIBUTE_UNUSED) 387 { 388 unsigned long x; 389 int shift; 390 391 x = cgen_get_insn_value (cd, bufp, word_length); 392 393 if (CGEN_INSN_LSB0_P) 394 shift = (start + 1) - length; 395 else 396 shift = (word_length - (start + length)); 397 return x >> shift; 398 } 399 400 #endif /* ! CGEN_INT_INSN_P */ 401 402 /* Default extraction routine. 403 404 INSN_VALUE is the first base_insn_bitsize bits of the insn in host order, 405 or sometimes less for cases like the m32r where the base insn size is 32 406 but some insns are 16 bits. 407 ATTRS is a mask of the boolean attributes. We only need `SIGNED', 408 but for generality we take a bitmask of all of them. 409 WORD_OFFSET is the offset in bits from the start of the insn of the value. 410 WORD_LENGTH is the length of the word in bits in which the value resides. 411 START is the starting bit number in the word, architecture origin. 412 LENGTH is the length of VALUE in bits. 413 TOTAL_LENGTH is the total length of the insn in bits. 414 415 Returns 1 for success, 0 for failure. */ 416 417 /* ??? The return code isn't properly used. wip. */ 418 419 /* ??? This doesn't handle bfd_vma's. Create another function when 420 necessary. */ 421 422 static int 423 extract_normal (CGEN_CPU_DESC cd, 424 #if ! CGEN_INT_INSN_P 425 CGEN_EXTRACT_INFO *ex_info, 426 #else 427 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, 428 #endif 429 CGEN_INSN_INT insn_value, 430 unsigned int attrs, 431 unsigned int word_offset, 432 unsigned int start, 433 unsigned int length, 434 unsigned int word_length, 435 unsigned int total_length, 436 #if ! CGEN_INT_INSN_P 437 bfd_vma pc, 438 #else 439 bfd_vma pc ATTRIBUTE_UNUSED, 440 #endif 441 long *valuep) 442 { 443 long value, mask; 444 445 /* If LENGTH is zero, this operand doesn't contribute to the value 446 so give it a standard value of zero. */ 447 if (length == 0) 448 { 449 *valuep = 0; 450 return 1; 451 } 452 453 if (word_length > 8 * sizeof (CGEN_INSN_INT)) 454 abort (); 455 456 /* For architectures with insns smaller than the insn-base-bitsize, 457 word_length may be too big. */ 458 if (cd->min_insn_bitsize < cd->base_insn_bitsize) 459 { 460 if (word_offset + word_length > total_length) 461 word_length = total_length - word_offset; 462 } 463 464 /* Does the value reside in INSN_VALUE, and at the right alignment? */ 465 466 if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length)) 467 { 468 if (CGEN_INSN_LSB0_P) 469 value = insn_value >> ((word_offset + start + 1) - length); 470 else 471 value = insn_value >> (total_length - ( word_offset + start + length)); 472 } 473 474 #if ! CGEN_INT_INSN_P 475 476 else 477 { 478 unsigned char *bufp = ex_info->insn_bytes + word_offset / 8; 479 480 if (word_length > 8 * sizeof (CGEN_INSN_INT)) 481 abort (); 482 483 if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0) 484 return 0; 485 486 value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc); 487 } 488 489 #endif /* ! CGEN_INT_INSN_P */ 490 491 /* Written this way to avoid undefined behaviour. */ 492 mask = (((1L << (length - 1)) - 1) << 1) | 1; 493 494 value &= mask; 495 /* sign extend? */ 496 if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED) 497 && (value & (1L << (length - 1)))) 498 value |= ~mask; 499 500 *valuep = value; 501 502 return 1; 503 } 504 505 /* Default insn extractor. 506 507 INSN_VALUE is the first base_insn_bitsize bits, translated to host order. 508 The extracted fields are stored in FIELDS. 509 EX_INFO is used to handle reading variable length insns. 510 Return the length of the insn in bits, or 0 if no match, 511 or -1 if an error occurs fetching data (memory_error_func will have 512 been called). */ 513 514 static int 515 extract_insn_normal (CGEN_CPU_DESC cd, 516 const CGEN_INSN *insn, 517 CGEN_EXTRACT_INFO *ex_info, 518 CGEN_INSN_INT insn_value, 519 CGEN_FIELDS *fields, 520 bfd_vma pc) 521 { 522 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 523 const CGEN_SYNTAX_CHAR_TYPE *syn; 524 525 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 526 527 CGEN_INIT_EXTRACT (cd); 528 529 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) 530 { 531 int length; 532 533 if (CGEN_SYNTAX_CHAR_P (*syn)) 534 continue; 535 536 length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn), 537 ex_info, insn_value, fields, pc); 538 if (length <= 0) 539 return length; 540 } 541 542 /* We recognized and successfully extracted this insn. */ 543 return CGEN_INSN_BITSIZE (insn); 544 } 545 546 /* Machine generated code added here. */ 548 549 const char * ip2k_cgen_insert_operand 550 (CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma); 551 552 /* Main entry point for operand insertion. 553 554 This function is basically just a big switch statement. Earlier versions 555 used tables to look up the function to use, but 556 - if the table contains both assembler and disassembler functions then 557 the disassembler contains much of the assembler and vice-versa, 558 - there's a lot of inlining possibilities as things grow, 559 - using a switch statement avoids the function call overhead. 560 561 This function could be moved into `parse_insn_normal', but keeping it 562 separate makes clear the interface between `parse_insn_normal' and each of 563 the handlers. It's also needed by GAS to insert operands that couldn't be 564 resolved during parsing. */ 565 566 const char * 567 ip2k_cgen_insert_operand (CGEN_CPU_DESC cd, 568 int opindex, 569 CGEN_FIELDS * fields, 570 CGEN_INSN_BYTES_PTR buffer, 571 bfd_vma pc ATTRIBUTE_UNUSED) 572 { 573 const char * errmsg = NULL; 574 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); 575 576 switch (opindex) 577 { 578 case IP2K_OPERAND_ADDR16CJP : 579 errmsg = insert_normal (cd, fields->f_addr16cjp, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, buffer); 580 break; 581 case IP2K_OPERAND_ADDR16H : 582 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer); 583 break; 584 case IP2K_OPERAND_ADDR16L : 585 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer); 586 break; 587 case IP2K_OPERAND_ADDR16P : 588 errmsg = insert_normal (cd, fields->f_page3, 0, 0, 2, 3, 16, total_length, buffer); 589 break; 590 case IP2K_OPERAND_BITNO : 591 errmsg = insert_normal (cd, fields->f_bitno, 0, 0, 11, 3, 16, total_length, buffer); 592 break; 593 case IP2K_OPERAND_CBIT : 594 break; 595 case IP2K_OPERAND_DCBIT : 596 break; 597 case IP2K_OPERAND_FR : 598 errmsg = insert_normal (cd, fields->f_reg, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, buffer); 599 break; 600 case IP2K_OPERAND_LIT8 : 601 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer); 602 break; 603 case IP2K_OPERAND_PABITS : 604 break; 605 case IP2K_OPERAND_RETI3 : 606 errmsg = insert_normal (cd, fields->f_reti3, 0, 0, 2, 3, 16, total_length, buffer); 607 break; 608 case IP2K_OPERAND_ZBIT : 609 break; 610 611 default : 612 /* xgettext:c-format */ 613 fprintf (stderr, _("Unrecognized field %d while building insn.\n"), 614 opindex); 615 abort (); 616 } 617 618 return errmsg; 619 } 620 621 int ip2k_cgen_extract_operand 622 (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); 623 624 /* Main entry point for operand extraction. 625 The result is <= 0 for error, >0 for success. 626 ??? Actual values aren't well defined right now. 627 628 This function is basically just a big switch statement. Earlier versions 629 used tables to look up the function to use, but 630 - if the table contains both assembler and disassembler functions then 631 the disassembler contains much of the assembler and vice-versa, 632 - there's a lot of inlining possibilities as things grow, 633 - using a switch statement avoids the function call overhead. 634 635 This function could be moved into `print_insn_normal', but keeping it 636 separate makes clear the interface between `print_insn_normal' and each of 637 the handlers. */ 638 639 int 640 ip2k_cgen_extract_operand (CGEN_CPU_DESC cd, 641 int opindex, 642 CGEN_EXTRACT_INFO *ex_info, 643 CGEN_INSN_INT insn_value, 644 CGEN_FIELDS * fields, 645 bfd_vma pc) 646 { 647 /* Assume success (for those operands that are nops). */ 648 int length = 1; 649 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); 650 651 switch (opindex) 652 { 653 case IP2K_OPERAND_ADDR16CJP : 654 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, pc, & fields->f_addr16cjp); 655 break; 656 case IP2K_OPERAND_ADDR16H : 657 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8); 658 break; 659 case IP2K_OPERAND_ADDR16L : 660 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8); 661 break; 662 case IP2K_OPERAND_ADDR16P : 663 length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_page3); 664 break; 665 case IP2K_OPERAND_BITNO : 666 length = extract_normal (cd, ex_info, insn_value, 0, 0, 11, 3, 16, total_length, pc, & fields->f_bitno); 667 break; 668 case IP2K_OPERAND_CBIT : 669 break; 670 case IP2K_OPERAND_DCBIT : 671 break; 672 case IP2K_OPERAND_FR : 673 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, pc, & fields->f_reg); 674 break; 675 case IP2K_OPERAND_LIT8 : 676 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8); 677 break; 678 case IP2K_OPERAND_PABITS : 679 break; 680 case IP2K_OPERAND_RETI3 : 681 length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_reti3); 682 break; 683 case IP2K_OPERAND_ZBIT : 684 break; 685 686 default : 687 /* xgettext:c-format */ 688 fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"), 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 fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"), 763 opindex); 764 abort (); 765 } 766 767 return value; 768 } 769 770 bfd_vma 771 ip2k_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 772 int opindex, 773 const CGEN_FIELDS * fields) 774 { 775 bfd_vma value; 776 777 switch (opindex) 778 { 779 case IP2K_OPERAND_ADDR16CJP : 780 value = fields->f_addr16cjp; 781 break; 782 case IP2K_OPERAND_ADDR16H : 783 value = fields->f_imm8; 784 break; 785 case IP2K_OPERAND_ADDR16L : 786 value = fields->f_imm8; 787 break; 788 case IP2K_OPERAND_ADDR16P : 789 value = fields->f_page3; 790 break; 791 case IP2K_OPERAND_BITNO : 792 value = fields->f_bitno; 793 break; 794 case IP2K_OPERAND_CBIT : 795 value = 0; 796 break; 797 case IP2K_OPERAND_DCBIT : 798 value = 0; 799 break; 800 case IP2K_OPERAND_FR : 801 value = fields->f_reg; 802 break; 803 case IP2K_OPERAND_LIT8 : 804 value = fields->f_imm8; 805 break; 806 case IP2K_OPERAND_PABITS : 807 value = 0; 808 break; 809 case IP2K_OPERAND_RETI3 : 810 value = fields->f_reti3; 811 break; 812 case IP2K_OPERAND_ZBIT : 813 value = 0; 814 break; 815 816 default : 817 /* xgettext:c-format */ 818 fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"), 819 opindex); 820 abort (); 821 } 822 823 return value; 824 } 825 826 void ip2k_cgen_set_int_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, int); 827 void ip2k_cgen_set_vma_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma); 828 829 /* Stuffing values in cgen_fields is handled by a collection of functions. 830 They are distinguished by the type of the VALUE argument they accept. 831 TODO: floating point, inlining support, remove cases where argument type 832 not appropriate. */ 833 834 void 835 ip2k_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 836 int opindex, 837 CGEN_FIELDS * fields, 838 int value) 839 { 840 switch (opindex) 841 { 842 case IP2K_OPERAND_ADDR16CJP : 843 fields->f_addr16cjp = value; 844 break; 845 case IP2K_OPERAND_ADDR16H : 846 fields->f_imm8 = value; 847 break; 848 case IP2K_OPERAND_ADDR16L : 849 fields->f_imm8 = value; 850 break; 851 case IP2K_OPERAND_ADDR16P : 852 fields->f_page3 = value; 853 break; 854 case IP2K_OPERAND_BITNO : 855 fields->f_bitno = value; 856 break; 857 case IP2K_OPERAND_CBIT : 858 break; 859 case IP2K_OPERAND_DCBIT : 860 break; 861 case IP2K_OPERAND_FR : 862 fields->f_reg = value; 863 break; 864 case IP2K_OPERAND_LIT8 : 865 fields->f_imm8 = value; 866 break; 867 case IP2K_OPERAND_PABITS : 868 break; 869 case IP2K_OPERAND_RETI3 : 870 fields->f_reti3 = value; 871 break; 872 case IP2K_OPERAND_ZBIT : 873 break; 874 875 default : 876 /* xgettext:c-format */ 877 fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"), 878 opindex); 879 abort (); 880 } 881 } 882 883 void 884 ip2k_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 885 int opindex, 886 CGEN_FIELDS * fields, 887 bfd_vma value) 888 { 889 switch (opindex) 890 { 891 case IP2K_OPERAND_ADDR16CJP : 892 fields->f_addr16cjp = value; 893 break; 894 case IP2K_OPERAND_ADDR16H : 895 fields->f_imm8 = value; 896 break; 897 case IP2K_OPERAND_ADDR16L : 898 fields->f_imm8 = value; 899 break; 900 case IP2K_OPERAND_ADDR16P : 901 fields->f_page3 = value; 902 break; 903 case IP2K_OPERAND_BITNO : 904 fields->f_bitno = value; 905 break; 906 case IP2K_OPERAND_CBIT : 907 break; 908 case IP2K_OPERAND_DCBIT : 909 break; 910 case IP2K_OPERAND_FR : 911 fields->f_reg = value; 912 break; 913 case IP2K_OPERAND_LIT8 : 914 fields->f_imm8 = value; 915 break; 916 case IP2K_OPERAND_PABITS : 917 break; 918 case IP2K_OPERAND_RETI3 : 919 fields->f_reti3 = value; 920 break; 921 case IP2K_OPERAND_ZBIT : 922 break; 923 924 default : 925 /* xgettext:c-format */ 926 fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"), 927 opindex); 928 abort (); 929 } 930 } 931 932 /* Function to call before using the instruction builder tables. */ 933 934 void 935 ip2k_cgen_init_ibld_table (CGEN_CPU_DESC cd) 936 { 937 cd->insert_handlers = & ip2k_cgen_insert_handlers[0]; 938 cd->extract_handlers = & ip2k_cgen_extract_handlers[0]; 939 940 cd->insert_operand = ip2k_cgen_insert_operand; 941 cd->extract_operand = ip2k_cgen_extract_operand; 942 943 cd->get_int_operand = ip2k_cgen_get_int_operand; 944 cd->set_int_operand = ip2k_cgen_set_int_operand; 945 cd->get_vma_operand = ip2k_cgen_get_vma_operand; 946 cd->set_vma_operand = ip2k_cgen_set_vma_operand; 947 } 948
