1 /* DO NOT EDIT! -*- buffer-read-only: t -*- vi:set ro: */ 2 /* Instruction building/extraction support for xstormy16. -*- 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) 1996-2020 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 "xstormy16-desc.h" 35 #include "xstormy16-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 * xstormy16_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 xstormy16_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 XSTORMY16_OPERAND_RB : 577 errmsg = insert_normal (cd, fields->f_Rb, 0, 0, 17, 3, 32, total_length, buffer); 578 break; 579 case XSTORMY16_OPERAND_RBJ : 580 errmsg = insert_normal (cd, fields->f_Rbj, 0, 0, 11, 1, 32, total_length, buffer); 581 break; 582 case XSTORMY16_OPERAND_RD : 583 errmsg = insert_normal (cd, fields->f_Rd, 0, 0, 12, 4, 32, total_length, buffer); 584 break; 585 case XSTORMY16_OPERAND_RDM : 586 errmsg = insert_normal (cd, fields->f_Rdm, 0, 0, 13, 3, 32, total_length, buffer); 587 break; 588 case XSTORMY16_OPERAND_RM : 589 errmsg = insert_normal (cd, fields->f_Rm, 0, 0, 4, 3, 32, total_length, buffer); 590 break; 591 case XSTORMY16_OPERAND_RS : 592 errmsg = insert_normal (cd, fields->f_Rs, 0, 0, 8, 4, 32, total_length, buffer); 593 break; 594 case XSTORMY16_OPERAND_ABS24 : 595 { 596 { 597 FLD (f_abs24_1) = ((FLD (f_abs24)) & (255)); 598 FLD (f_abs24_2) = ((UINT) (FLD (f_abs24)) >> (8)); 599 } 600 errmsg = insert_normal (cd, fields->f_abs24_1, 0, 0, 8, 8, 32, total_length, buffer); 601 if (errmsg) 602 break; 603 errmsg = insert_normal (cd, fields->f_abs24_2, 0, 0, 16, 16, 32, total_length, buffer); 604 if (errmsg) 605 break; 606 } 607 break; 608 case XSTORMY16_OPERAND_BCOND2 : 609 errmsg = insert_normal (cd, fields->f_op2, 0, 0, 4, 4, 32, total_length, buffer); 610 break; 611 case XSTORMY16_OPERAND_BCOND5 : 612 errmsg = insert_normal (cd, fields->f_op5, 0, 0, 16, 4, 32, total_length, buffer); 613 break; 614 case XSTORMY16_OPERAND_HMEM8 : 615 { 616 long value = fields->f_hmem8; 617 value = ((value) - (32512)); 618 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 8, 32, total_length, buffer); 619 } 620 break; 621 case XSTORMY16_OPERAND_IMM12 : 622 errmsg = insert_normal (cd, fields->f_imm12, 0|(1<<CGEN_IFLD_SIGNED), 0, 20, 12, 32, total_length, buffer); 623 break; 624 case XSTORMY16_OPERAND_IMM16 : 625 errmsg = insert_normal (cd, fields->f_imm16, 0|(1<<CGEN_IFLD_SIGN_OPT), 0, 16, 16, 32, total_length, buffer); 626 break; 627 case XSTORMY16_OPERAND_IMM2 : 628 errmsg = insert_normal (cd, fields->f_imm2, 0, 0, 10, 2, 32, total_length, buffer); 629 break; 630 case XSTORMY16_OPERAND_IMM3 : 631 errmsg = insert_normal (cd, fields->f_imm3, 0, 0, 4, 3, 32, total_length, buffer); 632 break; 633 case XSTORMY16_OPERAND_IMM3B : 634 errmsg = insert_normal (cd, fields->f_imm3b, 0, 0, 17, 3, 32, total_length, buffer); 635 break; 636 case XSTORMY16_OPERAND_IMM4 : 637 errmsg = insert_normal (cd, fields->f_imm4, 0, 0, 8, 4, 32, total_length, buffer); 638 break; 639 case XSTORMY16_OPERAND_IMM8 : 640 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 8, 8, 32, total_length, buffer); 641 break; 642 case XSTORMY16_OPERAND_IMM8SMALL : 643 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 8, 8, 32, total_length, buffer); 644 break; 645 case XSTORMY16_OPERAND_LMEM8 : 646 errmsg = insert_normal (cd, fields->f_lmem8, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 8, 32, total_length, buffer); 647 break; 648 case XSTORMY16_OPERAND_REL12 : 649 { 650 long value = fields->f_rel12; 651 value = ((value) - (((pc) + (4)))); 652 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 20, 12, 32, total_length, buffer); 653 } 654 break; 655 case XSTORMY16_OPERAND_REL12A : 656 { 657 long value = fields->f_rel12a; 658 value = ((SI) (((value) - (((pc) + (2))))) >> (1)); 659 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 4, 11, 32, total_length, buffer); 660 } 661 break; 662 case XSTORMY16_OPERAND_REL8_2 : 663 { 664 long value = fields->f_rel8_2; 665 value = ((value) - (((pc) + (2)))); 666 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 8, 8, 32, total_length, buffer); 667 } 668 break; 669 case XSTORMY16_OPERAND_REL8_4 : 670 { 671 long value = fields->f_rel8_4; 672 value = ((value) - (((pc) + (4)))); 673 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 8, 8, 32, total_length, buffer); 674 } 675 break; 676 case XSTORMY16_OPERAND_WS2 : 677 errmsg = insert_normal (cd, fields->f_op2m, 0, 0, 7, 1, 32, total_length, buffer); 678 break; 679 680 default : 681 /* xgettext:c-format */ 682 opcodes_error_handler 683 (_("internal error: unrecognized field %d while building insn"), 684 opindex); 685 abort (); 686 } 687 688 return errmsg; 689 } 690 691 int xstormy16_cgen_extract_operand 692 (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); 693 694 /* Main entry point for operand extraction. 695 The result is <= 0 for error, >0 for success. 696 ??? Actual values aren't well defined right now. 697 698 This function is basically just a big switch statement. Earlier versions 699 used tables to look up the function to use, but 700 - if the table contains both assembler and disassembler functions then 701 the disassembler contains much of the assembler and vice-versa, 702 - there's a lot of inlining possibilities as things grow, 703 - using a switch statement avoids the function call overhead. 704 705 This function could be moved into `print_insn_normal', but keeping it 706 separate makes clear the interface between `print_insn_normal' and each of 707 the handlers. */ 708 709 int 710 xstormy16_cgen_extract_operand (CGEN_CPU_DESC cd, 711 int opindex, 712 CGEN_EXTRACT_INFO *ex_info, 713 CGEN_INSN_INT insn_value, 714 CGEN_FIELDS * fields, 715 bfd_vma pc) 716 { 717 /* Assume success (for those operands that are nops). */ 718 int length = 1; 719 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); 720 721 switch (opindex) 722 { 723 case XSTORMY16_OPERAND_RB : 724 length = extract_normal (cd, ex_info, insn_value, 0, 0, 17, 3, 32, total_length, pc, & fields->f_Rb); 725 break; 726 case XSTORMY16_OPERAND_RBJ : 727 length = extract_normal (cd, ex_info, insn_value, 0, 0, 11, 1, 32, total_length, pc, & fields->f_Rbj); 728 break; 729 case XSTORMY16_OPERAND_RD : 730 length = extract_normal (cd, ex_info, insn_value, 0, 0, 12, 4, 32, total_length, pc, & fields->f_Rd); 731 break; 732 case XSTORMY16_OPERAND_RDM : 733 length = extract_normal (cd, ex_info, insn_value, 0, 0, 13, 3, 32, total_length, pc, & fields->f_Rdm); 734 break; 735 case XSTORMY16_OPERAND_RM : 736 length = extract_normal (cd, ex_info, insn_value, 0, 0, 4, 3, 32, total_length, pc, & fields->f_Rm); 737 break; 738 case XSTORMY16_OPERAND_RS : 739 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 4, 32, total_length, pc, & fields->f_Rs); 740 break; 741 case XSTORMY16_OPERAND_ABS24 : 742 { 743 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 8, 32, total_length, pc, & fields->f_abs24_1); 744 if (length <= 0) break; 745 length = extract_normal (cd, ex_info, insn_value, 0, 0, 16, 16, 32, total_length, pc, & fields->f_abs24_2); 746 if (length <= 0) break; 747 FLD (f_abs24) = ((((FLD (f_abs24_2)) << (8))) | (FLD (f_abs24_1))); 748 } 749 break; 750 case XSTORMY16_OPERAND_BCOND2 : 751 length = extract_normal (cd, ex_info, insn_value, 0, 0, 4, 4, 32, total_length, pc, & fields->f_op2); 752 break; 753 case XSTORMY16_OPERAND_BCOND5 : 754 length = extract_normal (cd, ex_info, insn_value, 0, 0, 16, 4, 32, total_length, pc, & fields->f_op5); 755 break; 756 case XSTORMY16_OPERAND_HMEM8 : 757 { 758 long value; 759 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 8, 32, total_length, pc, & value); 760 value = ((value) + (32512)); 761 fields->f_hmem8 = value; 762 } 763 break; 764 case XSTORMY16_OPERAND_IMM12 : 765 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 20, 12, 32, total_length, pc, & fields->f_imm12); 766 break; 767 case XSTORMY16_OPERAND_IMM16 : 768 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGN_OPT), 0, 16, 16, 32, total_length, pc, & fields->f_imm16); 769 break; 770 case XSTORMY16_OPERAND_IMM2 : 771 length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 2, 32, total_length, pc, & fields->f_imm2); 772 break; 773 case XSTORMY16_OPERAND_IMM3 : 774 length = extract_normal (cd, ex_info, insn_value, 0, 0, 4, 3, 32, total_length, pc, & fields->f_imm3); 775 break; 776 case XSTORMY16_OPERAND_IMM3B : 777 length = extract_normal (cd, ex_info, insn_value, 0, 0, 17, 3, 32, total_length, pc, & fields->f_imm3b); 778 break; 779 case XSTORMY16_OPERAND_IMM4 : 780 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 4, 32, total_length, pc, & fields->f_imm4); 781 break; 782 case XSTORMY16_OPERAND_IMM8 : 783 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 8, 32, total_length, pc, & fields->f_imm8); 784 break; 785 case XSTORMY16_OPERAND_IMM8SMALL : 786 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 8, 32, total_length, pc, & fields->f_imm8); 787 break; 788 case XSTORMY16_OPERAND_LMEM8 : 789 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 8, 32, total_length, pc, & fields->f_lmem8); 790 break; 791 case XSTORMY16_OPERAND_REL12 : 792 { 793 long value; 794 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 20, 12, 32, total_length, pc, & value); 795 value = ((value) + (((pc) + (4)))); 796 fields->f_rel12 = value; 797 } 798 break; 799 case XSTORMY16_OPERAND_REL12A : 800 { 801 long value; 802 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 4, 11, 32, total_length, pc, & value); 803 value = ((((value) * (2))) + (((pc) + (2)))); 804 fields->f_rel12a = value; 805 } 806 break; 807 case XSTORMY16_OPERAND_REL8_2 : 808 { 809 long value; 810 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 8, 8, 32, total_length, pc, & value); 811 value = ((value) + (((pc) + (2)))); 812 fields->f_rel8_2 = value; 813 } 814 break; 815 case XSTORMY16_OPERAND_REL8_4 : 816 { 817 long value; 818 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 8, 8, 32, total_length, pc, & value); 819 value = ((value) + (((pc) + (4)))); 820 fields->f_rel8_4 = value; 821 } 822 break; 823 case XSTORMY16_OPERAND_WS2 : 824 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 1, 32, total_length, pc, & fields->f_op2m); 825 break; 826 827 default : 828 /* xgettext:c-format */ 829 opcodes_error_handler 830 (_("internal error: unrecognized field %d while decoding insn"), 831 opindex); 832 abort (); 833 } 834 835 return length; 836 } 837 838 cgen_insert_fn * const xstormy16_cgen_insert_handlers[] = 839 { 840 insert_insn_normal, 841 }; 842 843 cgen_extract_fn * const xstormy16_cgen_extract_handlers[] = 844 { 845 extract_insn_normal, 846 }; 847 848 int xstormy16_cgen_get_int_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); 849 bfd_vma xstormy16_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); 850 851 /* Getting values from cgen_fields is handled by a collection of functions. 852 They are distinguished by the type of the VALUE argument they return. 853 TODO: floating point, inlining support, remove cases where result type 854 not appropriate. */ 855 856 int 857 xstormy16_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 858 int opindex, 859 const CGEN_FIELDS * fields) 860 { 861 int value; 862 863 switch (opindex) 864 { 865 case XSTORMY16_OPERAND_RB : 866 value = fields->f_Rb; 867 break; 868 case XSTORMY16_OPERAND_RBJ : 869 value = fields->f_Rbj; 870 break; 871 case XSTORMY16_OPERAND_RD : 872 value = fields->f_Rd; 873 break; 874 case XSTORMY16_OPERAND_RDM : 875 value = fields->f_Rdm; 876 break; 877 case XSTORMY16_OPERAND_RM : 878 value = fields->f_Rm; 879 break; 880 case XSTORMY16_OPERAND_RS : 881 value = fields->f_Rs; 882 break; 883 case XSTORMY16_OPERAND_ABS24 : 884 value = fields->f_abs24; 885 break; 886 case XSTORMY16_OPERAND_BCOND2 : 887 value = fields->f_op2; 888 break; 889 case XSTORMY16_OPERAND_BCOND5 : 890 value = fields->f_op5; 891 break; 892 case XSTORMY16_OPERAND_HMEM8 : 893 value = fields->f_hmem8; 894 break; 895 case XSTORMY16_OPERAND_IMM12 : 896 value = fields->f_imm12; 897 break; 898 case XSTORMY16_OPERAND_IMM16 : 899 value = fields->f_imm16; 900 break; 901 case XSTORMY16_OPERAND_IMM2 : 902 value = fields->f_imm2; 903 break; 904 case XSTORMY16_OPERAND_IMM3 : 905 value = fields->f_imm3; 906 break; 907 case XSTORMY16_OPERAND_IMM3B : 908 value = fields->f_imm3b; 909 break; 910 case XSTORMY16_OPERAND_IMM4 : 911 value = fields->f_imm4; 912 break; 913 case XSTORMY16_OPERAND_IMM8 : 914 value = fields->f_imm8; 915 break; 916 case XSTORMY16_OPERAND_IMM8SMALL : 917 value = fields->f_imm8; 918 break; 919 case XSTORMY16_OPERAND_LMEM8 : 920 value = fields->f_lmem8; 921 break; 922 case XSTORMY16_OPERAND_REL12 : 923 value = fields->f_rel12; 924 break; 925 case XSTORMY16_OPERAND_REL12A : 926 value = fields->f_rel12a; 927 break; 928 case XSTORMY16_OPERAND_REL8_2 : 929 value = fields->f_rel8_2; 930 break; 931 case XSTORMY16_OPERAND_REL8_4 : 932 value = fields->f_rel8_4; 933 break; 934 case XSTORMY16_OPERAND_WS2 : 935 value = fields->f_op2m; 936 break; 937 938 default : 939 /* xgettext:c-format */ 940 opcodes_error_handler 941 (_("internal error: unrecognized field %d while getting int operand"), 942 opindex); 943 abort (); 944 } 945 946 return value; 947 } 948 949 bfd_vma 950 xstormy16_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 951 int opindex, 952 const CGEN_FIELDS * fields) 953 { 954 bfd_vma value; 955 956 switch (opindex) 957 { 958 case XSTORMY16_OPERAND_RB : 959 value = fields->f_Rb; 960 break; 961 case XSTORMY16_OPERAND_RBJ : 962 value = fields->f_Rbj; 963 break; 964 case XSTORMY16_OPERAND_RD : 965 value = fields->f_Rd; 966 break; 967 case XSTORMY16_OPERAND_RDM : 968 value = fields->f_Rdm; 969 break; 970 case XSTORMY16_OPERAND_RM : 971 value = fields->f_Rm; 972 break; 973 case XSTORMY16_OPERAND_RS : 974 value = fields->f_Rs; 975 break; 976 case XSTORMY16_OPERAND_ABS24 : 977 value = fields->f_abs24; 978 break; 979 case XSTORMY16_OPERAND_BCOND2 : 980 value = fields->f_op2; 981 break; 982 case XSTORMY16_OPERAND_BCOND5 : 983 value = fields->f_op5; 984 break; 985 case XSTORMY16_OPERAND_HMEM8 : 986 value = fields->f_hmem8; 987 break; 988 case XSTORMY16_OPERAND_IMM12 : 989 value = fields->f_imm12; 990 break; 991 case XSTORMY16_OPERAND_IMM16 : 992 value = fields->f_imm16; 993 break; 994 case XSTORMY16_OPERAND_IMM2 : 995 value = fields->f_imm2; 996 break; 997 case XSTORMY16_OPERAND_IMM3 : 998 value = fields->f_imm3; 999 break; 1000 case XSTORMY16_OPERAND_IMM3B : 1001 value = fields->f_imm3b; 1002 break; 1003 case XSTORMY16_OPERAND_IMM4 : 1004 value = fields->f_imm4; 1005 break; 1006 case XSTORMY16_OPERAND_IMM8 : 1007 value = fields->f_imm8; 1008 break; 1009 case XSTORMY16_OPERAND_IMM8SMALL : 1010 value = fields->f_imm8; 1011 break; 1012 case XSTORMY16_OPERAND_LMEM8 : 1013 value = fields->f_lmem8; 1014 break; 1015 case XSTORMY16_OPERAND_REL12 : 1016 value = fields->f_rel12; 1017 break; 1018 case XSTORMY16_OPERAND_REL12A : 1019 value = fields->f_rel12a; 1020 break; 1021 case XSTORMY16_OPERAND_REL8_2 : 1022 value = fields->f_rel8_2; 1023 break; 1024 case XSTORMY16_OPERAND_REL8_4 : 1025 value = fields->f_rel8_4; 1026 break; 1027 case XSTORMY16_OPERAND_WS2 : 1028 value = fields->f_op2m; 1029 break; 1030 1031 default : 1032 /* xgettext:c-format */ 1033 opcodes_error_handler 1034 (_("internal error: unrecognized field %d while getting vma operand"), 1035 opindex); 1036 abort (); 1037 } 1038 1039 return value; 1040 } 1041 1042 void xstormy16_cgen_set_int_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, int); 1043 void xstormy16_cgen_set_vma_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma); 1044 1045 /* Stuffing values in cgen_fields is handled by a collection of functions. 1046 They are distinguished by the type of the VALUE argument they accept. 1047 TODO: floating point, inlining support, remove cases where argument type 1048 not appropriate. */ 1049 1050 void 1051 xstormy16_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 1052 int opindex, 1053 CGEN_FIELDS * fields, 1054 int value) 1055 { 1056 switch (opindex) 1057 { 1058 case XSTORMY16_OPERAND_RB : 1059 fields->f_Rb = value; 1060 break; 1061 case XSTORMY16_OPERAND_RBJ : 1062 fields->f_Rbj = value; 1063 break; 1064 case XSTORMY16_OPERAND_RD : 1065 fields->f_Rd = value; 1066 break; 1067 case XSTORMY16_OPERAND_RDM : 1068 fields->f_Rdm = value; 1069 break; 1070 case XSTORMY16_OPERAND_RM : 1071 fields->f_Rm = value; 1072 break; 1073 case XSTORMY16_OPERAND_RS : 1074 fields->f_Rs = value; 1075 break; 1076 case XSTORMY16_OPERAND_ABS24 : 1077 fields->f_abs24 = value; 1078 break; 1079 case XSTORMY16_OPERAND_BCOND2 : 1080 fields->f_op2 = value; 1081 break; 1082 case XSTORMY16_OPERAND_BCOND5 : 1083 fields->f_op5 = value; 1084 break; 1085 case XSTORMY16_OPERAND_HMEM8 : 1086 fields->f_hmem8 = value; 1087 break; 1088 case XSTORMY16_OPERAND_IMM12 : 1089 fields->f_imm12 = value; 1090 break; 1091 case XSTORMY16_OPERAND_IMM16 : 1092 fields->f_imm16 = value; 1093 break; 1094 case XSTORMY16_OPERAND_IMM2 : 1095 fields->f_imm2 = value; 1096 break; 1097 case XSTORMY16_OPERAND_IMM3 : 1098 fields->f_imm3 = value; 1099 break; 1100 case XSTORMY16_OPERAND_IMM3B : 1101 fields->f_imm3b = value; 1102 break; 1103 case XSTORMY16_OPERAND_IMM4 : 1104 fields->f_imm4 = value; 1105 break; 1106 case XSTORMY16_OPERAND_IMM8 : 1107 fields->f_imm8 = value; 1108 break; 1109 case XSTORMY16_OPERAND_IMM8SMALL : 1110 fields->f_imm8 = value; 1111 break; 1112 case XSTORMY16_OPERAND_LMEM8 : 1113 fields->f_lmem8 = value; 1114 break; 1115 case XSTORMY16_OPERAND_REL12 : 1116 fields->f_rel12 = value; 1117 break; 1118 case XSTORMY16_OPERAND_REL12A : 1119 fields->f_rel12a = value; 1120 break; 1121 case XSTORMY16_OPERAND_REL8_2 : 1122 fields->f_rel8_2 = value; 1123 break; 1124 case XSTORMY16_OPERAND_REL8_4 : 1125 fields->f_rel8_4 = value; 1126 break; 1127 case XSTORMY16_OPERAND_WS2 : 1128 fields->f_op2m = value; 1129 break; 1130 1131 default : 1132 /* xgettext:c-format */ 1133 opcodes_error_handler 1134 (_("internal error: unrecognized field %d while setting int operand"), 1135 opindex); 1136 abort (); 1137 } 1138 } 1139 1140 void 1141 xstormy16_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 1142 int opindex, 1143 CGEN_FIELDS * fields, 1144 bfd_vma value) 1145 { 1146 switch (opindex) 1147 { 1148 case XSTORMY16_OPERAND_RB : 1149 fields->f_Rb = value; 1150 break; 1151 case XSTORMY16_OPERAND_RBJ : 1152 fields->f_Rbj = value; 1153 break; 1154 case XSTORMY16_OPERAND_RD : 1155 fields->f_Rd = value; 1156 break; 1157 case XSTORMY16_OPERAND_RDM : 1158 fields->f_Rdm = value; 1159 break; 1160 case XSTORMY16_OPERAND_RM : 1161 fields->f_Rm = value; 1162 break; 1163 case XSTORMY16_OPERAND_RS : 1164 fields->f_Rs = value; 1165 break; 1166 case XSTORMY16_OPERAND_ABS24 : 1167 fields->f_abs24 = value; 1168 break; 1169 case XSTORMY16_OPERAND_BCOND2 : 1170 fields->f_op2 = value; 1171 break; 1172 case XSTORMY16_OPERAND_BCOND5 : 1173 fields->f_op5 = value; 1174 break; 1175 case XSTORMY16_OPERAND_HMEM8 : 1176 fields->f_hmem8 = value; 1177 break; 1178 case XSTORMY16_OPERAND_IMM12 : 1179 fields->f_imm12 = value; 1180 break; 1181 case XSTORMY16_OPERAND_IMM16 : 1182 fields->f_imm16 = value; 1183 break; 1184 case XSTORMY16_OPERAND_IMM2 : 1185 fields->f_imm2 = value; 1186 break; 1187 case XSTORMY16_OPERAND_IMM3 : 1188 fields->f_imm3 = value; 1189 break; 1190 case XSTORMY16_OPERAND_IMM3B : 1191 fields->f_imm3b = value; 1192 break; 1193 case XSTORMY16_OPERAND_IMM4 : 1194 fields->f_imm4 = value; 1195 break; 1196 case XSTORMY16_OPERAND_IMM8 : 1197 fields->f_imm8 = value; 1198 break; 1199 case XSTORMY16_OPERAND_IMM8SMALL : 1200 fields->f_imm8 = value; 1201 break; 1202 case XSTORMY16_OPERAND_LMEM8 : 1203 fields->f_lmem8 = value; 1204 break; 1205 case XSTORMY16_OPERAND_REL12 : 1206 fields->f_rel12 = value; 1207 break; 1208 case XSTORMY16_OPERAND_REL12A : 1209 fields->f_rel12a = value; 1210 break; 1211 case XSTORMY16_OPERAND_REL8_2 : 1212 fields->f_rel8_2 = value; 1213 break; 1214 case XSTORMY16_OPERAND_REL8_4 : 1215 fields->f_rel8_4 = value; 1216 break; 1217 case XSTORMY16_OPERAND_WS2 : 1218 fields->f_op2m = value; 1219 break; 1220 1221 default : 1222 /* xgettext:c-format */ 1223 opcodes_error_handler 1224 (_("internal error: unrecognized field %d while setting vma operand"), 1225 opindex); 1226 abort (); 1227 } 1228 } 1229 1230 /* Function to call before using the instruction builder tables. */ 1231 1232 void 1233 xstormy16_cgen_init_ibld_table (CGEN_CPU_DESC cd) 1234 { 1235 cd->insert_handlers = & xstormy16_cgen_insert_handlers[0]; 1236 cd->extract_handlers = & xstormy16_cgen_extract_handlers[0]; 1237 1238 cd->insert_operand = xstormy16_cgen_insert_operand; 1239 cd->extract_operand = xstormy16_cgen_extract_operand; 1240 1241 cd->get_int_operand = xstormy16_cgen_get_int_operand; 1242 cd->set_int_operand = xstormy16_cgen_set_int_operand; 1243 cd->get_vma_operand = xstormy16_cgen_get_vma_operand; 1244 cd->set_vma_operand = xstormy16_cgen_set_vma_operand; 1245 } 1246