1 /* Instruction building/extraction support for xstormy16. -*- 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 "xstormy16-desc.h" 34 #include "xstormy16-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 * xstormy16_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 xstormy16_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 XSTORMY16_OPERAND_RB : 579 errmsg = insert_normal (cd, fields->f_Rb, 0, 0, 17, 3, 32, total_length, buffer); 580 break; 581 case XSTORMY16_OPERAND_RBJ : 582 errmsg = insert_normal (cd, fields->f_Rbj, 0, 0, 11, 1, 32, total_length, buffer); 583 break; 584 case XSTORMY16_OPERAND_RD : 585 errmsg = insert_normal (cd, fields->f_Rd, 0, 0, 12, 4, 32, total_length, buffer); 586 break; 587 case XSTORMY16_OPERAND_RDM : 588 errmsg = insert_normal (cd, fields->f_Rdm, 0, 0, 13, 3, 32, total_length, buffer); 589 break; 590 case XSTORMY16_OPERAND_RM : 591 errmsg = insert_normal (cd, fields->f_Rm, 0, 0, 4, 3, 32, total_length, buffer); 592 break; 593 case XSTORMY16_OPERAND_RS : 594 errmsg = insert_normal (cd, fields->f_Rs, 0, 0, 8, 4, 32, total_length, buffer); 595 break; 596 case XSTORMY16_OPERAND_ABS24 : 597 { 598 { 599 FLD (f_abs24_1) = ((FLD (f_abs24)) & (255)); 600 FLD (f_abs24_2) = ((UINT) (FLD (f_abs24)) >> (8)); 601 } 602 errmsg = insert_normal (cd, fields->f_abs24_1, 0, 0, 8, 8, 32, total_length, buffer); 603 if (errmsg) 604 break; 605 errmsg = insert_normal (cd, fields->f_abs24_2, 0, 0, 16, 16, 32, total_length, buffer); 606 if (errmsg) 607 break; 608 } 609 break; 610 case XSTORMY16_OPERAND_BCOND2 : 611 errmsg = insert_normal (cd, fields->f_op2, 0, 0, 4, 4, 32, total_length, buffer); 612 break; 613 case XSTORMY16_OPERAND_BCOND5 : 614 errmsg = insert_normal (cd, fields->f_op5, 0, 0, 16, 4, 32, total_length, buffer); 615 break; 616 case XSTORMY16_OPERAND_HMEM8 : 617 { 618 long value = fields->f_hmem8; 619 value = ((value) - (32512)); 620 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 8, 32, total_length, buffer); 621 } 622 break; 623 case XSTORMY16_OPERAND_IMM12 : 624 errmsg = insert_normal (cd, fields->f_imm12, 0|(1<<CGEN_IFLD_SIGNED), 0, 20, 12, 32, total_length, buffer); 625 break; 626 case XSTORMY16_OPERAND_IMM16 : 627 errmsg = insert_normal (cd, fields->f_imm16, 0|(1<<CGEN_IFLD_SIGN_OPT), 0, 16, 16, 32, total_length, buffer); 628 break; 629 case XSTORMY16_OPERAND_IMM2 : 630 errmsg = insert_normal (cd, fields->f_imm2, 0, 0, 10, 2, 32, total_length, buffer); 631 break; 632 case XSTORMY16_OPERAND_IMM3 : 633 errmsg = insert_normal (cd, fields->f_imm3, 0, 0, 4, 3, 32, total_length, buffer); 634 break; 635 case XSTORMY16_OPERAND_IMM3B : 636 errmsg = insert_normal (cd, fields->f_imm3b, 0, 0, 17, 3, 32, total_length, buffer); 637 break; 638 case XSTORMY16_OPERAND_IMM4 : 639 errmsg = insert_normal (cd, fields->f_imm4, 0, 0, 8, 4, 32, total_length, buffer); 640 break; 641 case XSTORMY16_OPERAND_IMM8 : 642 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 8, 8, 32, total_length, buffer); 643 break; 644 case XSTORMY16_OPERAND_IMM8SMALL : 645 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 8, 8, 32, total_length, buffer); 646 break; 647 case XSTORMY16_OPERAND_LMEM8 : 648 errmsg = insert_normal (cd, fields->f_lmem8, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 8, 32, total_length, buffer); 649 break; 650 case XSTORMY16_OPERAND_REL12 : 651 { 652 long value = fields->f_rel12; 653 value = ((value) - (((pc) + (4)))); 654 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 20, 12, 32, total_length, buffer); 655 } 656 break; 657 case XSTORMY16_OPERAND_REL12A : 658 { 659 long value = fields->f_rel12a; 660 value = ((SI) (((value) - (((pc) + (2))))) >> (1)); 661 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 4, 11, 32, total_length, buffer); 662 } 663 break; 664 case XSTORMY16_OPERAND_REL8_2 : 665 { 666 long value = fields->f_rel8_2; 667 value = ((value) - (((pc) + (2)))); 668 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 8, 8, 32, total_length, buffer); 669 } 670 break; 671 case XSTORMY16_OPERAND_REL8_4 : 672 { 673 long value = fields->f_rel8_4; 674 value = ((value) - (((pc) + (4)))); 675 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 8, 8, 32, total_length, buffer); 676 } 677 break; 678 case XSTORMY16_OPERAND_WS2 : 679 errmsg = insert_normal (cd, fields->f_op2m, 0, 0, 7, 1, 32, total_length, buffer); 680 break; 681 682 default : 683 /* xgettext:c-format */ 684 fprintf (stderr, _("Unrecognized field %d while building insn.\n"), 685 opindex); 686 abort (); 687 } 688 689 return errmsg; 690 } 691 692 int xstormy16_cgen_extract_operand 693 (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); 694 695 /* Main entry point for operand extraction. 696 The result is <= 0 for error, >0 for success. 697 ??? Actual values aren't well defined right now. 698 699 This function is basically just a big switch statement. Earlier versions 700 used tables to look up the function to use, but 701 - if the table contains both assembler and disassembler functions then 702 the disassembler contains much of the assembler and vice-versa, 703 - there's a lot of inlining possibilities as things grow, 704 - using a switch statement avoids the function call overhead. 705 706 This function could be moved into `print_insn_normal', but keeping it 707 separate makes clear the interface between `print_insn_normal' and each of 708 the handlers. */ 709 710 int 711 xstormy16_cgen_extract_operand (CGEN_CPU_DESC cd, 712 int opindex, 713 CGEN_EXTRACT_INFO *ex_info, 714 CGEN_INSN_INT insn_value, 715 CGEN_FIELDS * fields, 716 bfd_vma pc) 717 { 718 /* Assume success (for those operands that are nops). */ 719 int length = 1; 720 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); 721 722 switch (opindex) 723 { 724 case XSTORMY16_OPERAND_RB : 725 length = extract_normal (cd, ex_info, insn_value, 0, 0, 17, 3, 32, total_length, pc, & fields->f_Rb); 726 break; 727 case XSTORMY16_OPERAND_RBJ : 728 length = extract_normal (cd, ex_info, insn_value, 0, 0, 11, 1, 32, total_length, pc, & fields->f_Rbj); 729 break; 730 case XSTORMY16_OPERAND_RD : 731 length = extract_normal (cd, ex_info, insn_value, 0, 0, 12, 4, 32, total_length, pc, & fields->f_Rd); 732 break; 733 case XSTORMY16_OPERAND_RDM : 734 length = extract_normal (cd, ex_info, insn_value, 0, 0, 13, 3, 32, total_length, pc, & fields->f_Rdm); 735 break; 736 case XSTORMY16_OPERAND_RM : 737 length = extract_normal (cd, ex_info, insn_value, 0, 0, 4, 3, 32, total_length, pc, & fields->f_Rm); 738 break; 739 case XSTORMY16_OPERAND_RS : 740 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 4, 32, total_length, pc, & fields->f_Rs); 741 break; 742 case XSTORMY16_OPERAND_ABS24 : 743 { 744 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 8, 32, total_length, pc, & fields->f_abs24_1); 745 if (length <= 0) break; 746 length = extract_normal (cd, ex_info, insn_value, 0, 0, 16, 16, 32, total_length, pc, & fields->f_abs24_2); 747 if (length <= 0) break; 748 FLD (f_abs24) = ((((FLD (f_abs24_2)) << (8))) | (FLD (f_abs24_1))); 749 } 750 break; 751 case XSTORMY16_OPERAND_BCOND2 : 752 length = extract_normal (cd, ex_info, insn_value, 0, 0, 4, 4, 32, total_length, pc, & fields->f_op2); 753 break; 754 case XSTORMY16_OPERAND_BCOND5 : 755 length = extract_normal (cd, ex_info, insn_value, 0, 0, 16, 4, 32, total_length, pc, & fields->f_op5); 756 break; 757 case XSTORMY16_OPERAND_HMEM8 : 758 { 759 long value; 760 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 8, 32, total_length, pc, & value); 761 value = ((value) + (32512)); 762 fields->f_hmem8 = value; 763 } 764 break; 765 case XSTORMY16_OPERAND_IMM12 : 766 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 20, 12, 32, total_length, pc, & fields->f_imm12); 767 break; 768 case XSTORMY16_OPERAND_IMM16 : 769 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGN_OPT), 0, 16, 16, 32, total_length, pc, & fields->f_imm16); 770 break; 771 case XSTORMY16_OPERAND_IMM2 : 772 length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 2, 32, total_length, pc, & fields->f_imm2); 773 break; 774 case XSTORMY16_OPERAND_IMM3 : 775 length = extract_normal (cd, ex_info, insn_value, 0, 0, 4, 3, 32, total_length, pc, & fields->f_imm3); 776 break; 777 case XSTORMY16_OPERAND_IMM3B : 778 length = extract_normal (cd, ex_info, insn_value, 0, 0, 17, 3, 32, total_length, pc, & fields->f_imm3b); 779 break; 780 case XSTORMY16_OPERAND_IMM4 : 781 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 4, 32, total_length, pc, & fields->f_imm4); 782 break; 783 case XSTORMY16_OPERAND_IMM8 : 784 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 8, 32, total_length, pc, & fields->f_imm8); 785 break; 786 case XSTORMY16_OPERAND_IMM8SMALL : 787 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 8, 32, total_length, pc, & fields->f_imm8); 788 break; 789 case XSTORMY16_OPERAND_LMEM8 : 790 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 8, 32, total_length, pc, & fields->f_lmem8); 791 break; 792 case XSTORMY16_OPERAND_REL12 : 793 { 794 long value; 795 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); 796 value = ((value) + (((pc) + (4)))); 797 fields->f_rel12 = value; 798 } 799 break; 800 case XSTORMY16_OPERAND_REL12A : 801 { 802 long value; 803 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); 804 value = ((((value) << (1))) + (((pc) + (2)))); 805 fields->f_rel12a = value; 806 } 807 break; 808 case XSTORMY16_OPERAND_REL8_2 : 809 { 810 long value; 811 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); 812 value = ((value) + (((pc) + (2)))); 813 fields->f_rel8_2 = value; 814 } 815 break; 816 case XSTORMY16_OPERAND_REL8_4 : 817 { 818 long value; 819 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); 820 value = ((value) + (((pc) + (4)))); 821 fields->f_rel8_4 = value; 822 } 823 break; 824 case XSTORMY16_OPERAND_WS2 : 825 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 1, 32, total_length, pc, & fields->f_op2m); 826 break; 827 828 default : 829 /* xgettext:c-format */ 830 fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"), 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 fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"), 941 opindex); 942 abort (); 943 } 944 945 return value; 946 } 947 948 bfd_vma 949 xstormy16_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 950 int opindex, 951 const CGEN_FIELDS * fields) 952 { 953 bfd_vma value; 954 955 switch (opindex) 956 { 957 case XSTORMY16_OPERAND_RB : 958 value = fields->f_Rb; 959 break; 960 case XSTORMY16_OPERAND_RBJ : 961 value = fields->f_Rbj; 962 break; 963 case XSTORMY16_OPERAND_RD : 964 value = fields->f_Rd; 965 break; 966 case XSTORMY16_OPERAND_RDM : 967 value = fields->f_Rdm; 968 break; 969 case XSTORMY16_OPERAND_RM : 970 value = fields->f_Rm; 971 break; 972 case XSTORMY16_OPERAND_RS : 973 value = fields->f_Rs; 974 break; 975 case XSTORMY16_OPERAND_ABS24 : 976 value = fields->f_abs24; 977 break; 978 case XSTORMY16_OPERAND_BCOND2 : 979 value = fields->f_op2; 980 break; 981 case XSTORMY16_OPERAND_BCOND5 : 982 value = fields->f_op5; 983 break; 984 case XSTORMY16_OPERAND_HMEM8 : 985 value = fields->f_hmem8; 986 break; 987 case XSTORMY16_OPERAND_IMM12 : 988 value = fields->f_imm12; 989 break; 990 case XSTORMY16_OPERAND_IMM16 : 991 value = fields->f_imm16; 992 break; 993 case XSTORMY16_OPERAND_IMM2 : 994 value = fields->f_imm2; 995 break; 996 case XSTORMY16_OPERAND_IMM3 : 997 value = fields->f_imm3; 998 break; 999 case XSTORMY16_OPERAND_IMM3B : 1000 value = fields->f_imm3b; 1001 break; 1002 case XSTORMY16_OPERAND_IMM4 : 1003 value = fields->f_imm4; 1004 break; 1005 case XSTORMY16_OPERAND_IMM8 : 1006 value = fields->f_imm8; 1007 break; 1008 case XSTORMY16_OPERAND_IMM8SMALL : 1009 value = fields->f_imm8; 1010 break; 1011 case XSTORMY16_OPERAND_LMEM8 : 1012 value = fields->f_lmem8; 1013 break; 1014 case XSTORMY16_OPERAND_REL12 : 1015 value = fields->f_rel12; 1016 break; 1017 case XSTORMY16_OPERAND_REL12A : 1018 value = fields->f_rel12a; 1019 break; 1020 case XSTORMY16_OPERAND_REL8_2 : 1021 value = fields->f_rel8_2; 1022 break; 1023 case XSTORMY16_OPERAND_REL8_4 : 1024 value = fields->f_rel8_4; 1025 break; 1026 case XSTORMY16_OPERAND_WS2 : 1027 value = fields->f_op2m; 1028 break; 1029 1030 default : 1031 /* xgettext:c-format */ 1032 fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"), 1033 opindex); 1034 abort (); 1035 } 1036 1037 return value; 1038 } 1039 1040 void xstormy16_cgen_set_int_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, int); 1041 void xstormy16_cgen_set_vma_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma); 1042 1043 /* Stuffing values in cgen_fields is handled by a collection of functions. 1044 They are distinguished by the type of the VALUE argument they accept. 1045 TODO: floating point, inlining support, remove cases where argument type 1046 not appropriate. */ 1047 1048 void 1049 xstormy16_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 1050 int opindex, 1051 CGEN_FIELDS * fields, 1052 int value) 1053 { 1054 switch (opindex) 1055 { 1056 case XSTORMY16_OPERAND_RB : 1057 fields->f_Rb = value; 1058 break; 1059 case XSTORMY16_OPERAND_RBJ : 1060 fields->f_Rbj = value; 1061 break; 1062 case XSTORMY16_OPERAND_RD : 1063 fields->f_Rd = value; 1064 break; 1065 case XSTORMY16_OPERAND_RDM : 1066 fields->f_Rdm = value; 1067 break; 1068 case XSTORMY16_OPERAND_RM : 1069 fields->f_Rm = value; 1070 break; 1071 case XSTORMY16_OPERAND_RS : 1072 fields->f_Rs = value; 1073 break; 1074 case XSTORMY16_OPERAND_ABS24 : 1075 fields->f_abs24 = value; 1076 break; 1077 case XSTORMY16_OPERAND_BCOND2 : 1078 fields->f_op2 = value; 1079 break; 1080 case XSTORMY16_OPERAND_BCOND5 : 1081 fields->f_op5 = value; 1082 break; 1083 case XSTORMY16_OPERAND_HMEM8 : 1084 fields->f_hmem8 = value; 1085 break; 1086 case XSTORMY16_OPERAND_IMM12 : 1087 fields->f_imm12 = value; 1088 break; 1089 case XSTORMY16_OPERAND_IMM16 : 1090 fields->f_imm16 = value; 1091 break; 1092 case XSTORMY16_OPERAND_IMM2 : 1093 fields->f_imm2 = value; 1094 break; 1095 case XSTORMY16_OPERAND_IMM3 : 1096 fields->f_imm3 = value; 1097 break; 1098 case XSTORMY16_OPERAND_IMM3B : 1099 fields->f_imm3b = value; 1100 break; 1101 case XSTORMY16_OPERAND_IMM4 : 1102 fields->f_imm4 = value; 1103 break; 1104 case XSTORMY16_OPERAND_IMM8 : 1105 fields->f_imm8 = value; 1106 break; 1107 case XSTORMY16_OPERAND_IMM8SMALL : 1108 fields->f_imm8 = value; 1109 break; 1110 case XSTORMY16_OPERAND_LMEM8 : 1111 fields->f_lmem8 = value; 1112 break; 1113 case XSTORMY16_OPERAND_REL12 : 1114 fields->f_rel12 = value; 1115 break; 1116 case XSTORMY16_OPERAND_REL12A : 1117 fields->f_rel12a = value; 1118 break; 1119 case XSTORMY16_OPERAND_REL8_2 : 1120 fields->f_rel8_2 = value; 1121 break; 1122 case XSTORMY16_OPERAND_REL8_4 : 1123 fields->f_rel8_4 = value; 1124 break; 1125 case XSTORMY16_OPERAND_WS2 : 1126 fields->f_op2m = value; 1127 break; 1128 1129 default : 1130 /* xgettext:c-format */ 1131 fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"), 1132 opindex); 1133 abort (); 1134 } 1135 } 1136 1137 void 1138 xstormy16_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 1139 int opindex, 1140 CGEN_FIELDS * fields, 1141 bfd_vma value) 1142 { 1143 switch (opindex) 1144 { 1145 case XSTORMY16_OPERAND_RB : 1146 fields->f_Rb = value; 1147 break; 1148 case XSTORMY16_OPERAND_RBJ : 1149 fields->f_Rbj = value; 1150 break; 1151 case XSTORMY16_OPERAND_RD : 1152 fields->f_Rd = value; 1153 break; 1154 case XSTORMY16_OPERAND_RDM : 1155 fields->f_Rdm = value; 1156 break; 1157 case XSTORMY16_OPERAND_RM : 1158 fields->f_Rm = value; 1159 break; 1160 case XSTORMY16_OPERAND_RS : 1161 fields->f_Rs = value; 1162 break; 1163 case XSTORMY16_OPERAND_ABS24 : 1164 fields->f_abs24 = value; 1165 break; 1166 case XSTORMY16_OPERAND_BCOND2 : 1167 fields->f_op2 = value; 1168 break; 1169 case XSTORMY16_OPERAND_BCOND5 : 1170 fields->f_op5 = value; 1171 break; 1172 case XSTORMY16_OPERAND_HMEM8 : 1173 fields->f_hmem8 = value; 1174 break; 1175 case XSTORMY16_OPERAND_IMM12 : 1176 fields->f_imm12 = value; 1177 break; 1178 case XSTORMY16_OPERAND_IMM16 : 1179 fields->f_imm16 = value; 1180 break; 1181 case XSTORMY16_OPERAND_IMM2 : 1182 fields->f_imm2 = value; 1183 break; 1184 case XSTORMY16_OPERAND_IMM3 : 1185 fields->f_imm3 = value; 1186 break; 1187 case XSTORMY16_OPERAND_IMM3B : 1188 fields->f_imm3b = value; 1189 break; 1190 case XSTORMY16_OPERAND_IMM4 : 1191 fields->f_imm4 = value; 1192 break; 1193 case XSTORMY16_OPERAND_IMM8 : 1194 fields->f_imm8 = value; 1195 break; 1196 case XSTORMY16_OPERAND_IMM8SMALL : 1197 fields->f_imm8 = value; 1198 break; 1199 case XSTORMY16_OPERAND_LMEM8 : 1200 fields->f_lmem8 = value; 1201 break; 1202 case XSTORMY16_OPERAND_REL12 : 1203 fields->f_rel12 = value; 1204 break; 1205 case XSTORMY16_OPERAND_REL12A : 1206 fields->f_rel12a = value; 1207 break; 1208 case XSTORMY16_OPERAND_REL8_2 : 1209 fields->f_rel8_2 = value; 1210 break; 1211 case XSTORMY16_OPERAND_REL8_4 : 1212 fields->f_rel8_4 = value; 1213 break; 1214 case XSTORMY16_OPERAND_WS2 : 1215 fields->f_op2m = value; 1216 break; 1217 1218 default : 1219 /* xgettext:c-format */ 1220 fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"), 1221 opindex); 1222 abort (); 1223 } 1224 } 1225 1226 /* Function to call before using the instruction builder tables. */ 1227 1228 void 1229 xstormy16_cgen_init_ibld_table (CGEN_CPU_DESC cd) 1230 { 1231 cd->insert_handlers = & xstormy16_cgen_insert_handlers[0]; 1232 cd->extract_handlers = & xstormy16_cgen_extract_handlers[0]; 1233 1234 cd->insert_operand = xstormy16_cgen_insert_operand; 1235 cd->extract_operand = xstormy16_cgen_extract_operand; 1236 1237 cd->get_int_operand = xstormy16_cgen_get_int_operand; 1238 cd->set_int_operand = xstormy16_cgen_set_int_operand; 1239 cd->get_vma_operand = xstormy16_cgen_get_vma_operand; 1240 cd->set_vma_operand = xstormy16_cgen_set_vma_operand; 1241 } 1242
