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) 1996-2014 Free Software Foundation, Inc. 7 8 This file is part of libopcodes. 9 10 This library is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; either version 3, or (at your option) 13 any later version. 14 15 It is distributed in the hope that it will be useful, but WITHOUT 16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 17 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 18 License for more details. 19 20 You should have received a copy of the GNU General Public License 21 along with this program; if not, write to the Free Software Foundation, Inc., 22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 23 24 /* ??? Eventually more and more of this stuff can go to cpu-independent files. 25 Keep that in mind. */ 26 27 #include "sysdep.h" 28 #include <stdio.h> 29 #include "ansidecl.h" 30 #include "dis-asm.h" 31 #include "bfd.h" 32 #include "symcat.h" 33 #include "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; 212 213 if (CGEN_INSN_LSB0_P) 214 shift = (word_offset + start + 1) - length; 215 else 216 shift = total_length - (word_offset + start + length); 217 *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift); 218 } 219 220 #else /* ! CGEN_INT_INSN_P */ 221 222 { 223 unsigned char *bufp = (unsigned char *) buffer + word_offset / 8; 224 225 insert_1 (cd, value, start, length, word_length, bufp); 226 } 227 228 #endif /* ! CGEN_INT_INSN_P */ 229 230 return NULL; 231 } 232 233 /* Default insn builder (insert handler). 234 The instruction is recorded in CGEN_INT_INSN_P byte order (meaning 235 that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is 236 recorded in host byte order, otherwise BUFFER is an array of bytes 237 and the value is recorded in target byte order). 238 The result is an error message or NULL if success. */ 239 240 static const char * 241 insert_insn_normal (CGEN_CPU_DESC cd, 242 const CGEN_INSN * insn, 243 CGEN_FIELDS * fields, 244 CGEN_INSN_BYTES_PTR buffer, 245 bfd_vma pc) 246 { 247 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 248 unsigned long value; 249 const CGEN_SYNTAX_CHAR_TYPE * syn; 250 251 CGEN_INIT_INSERT (cd); 252 value = CGEN_INSN_BASE_VALUE (insn); 253 254 /* If we're recording insns as numbers (rather than a string of bytes), 255 target byte order handling is deferred until later. */ 256 257 #if CGEN_INT_INSN_P 258 259 put_insn_int_value (cd, buffer, cd->base_insn_bitsize, 260 CGEN_FIELDS_BITSIZE (fields), value); 261 262 #else 263 264 cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize, 265 (unsigned) CGEN_FIELDS_BITSIZE (fields)), 266 value); 267 268 #endif /* ! CGEN_INT_INSN_P */ 269 270 /* ??? It would be better to scan the format's fields. 271 Still need to be able to insert a value based on the operand though; 272 e.g. storing a branch displacement that got resolved later. 273 Needs more thought first. */ 274 275 for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn) 276 { 277 const char *errmsg; 278 279 if (CGEN_SYNTAX_CHAR_P (* syn)) 280 continue; 281 282 errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn), 283 fields, buffer, pc); 284 if (errmsg) 285 return errmsg; 286 } 287 288 return NULL; 289 } 290 291 #if CGEN_INT_INSN_P 292 /* Cover function to store an insn value into an integral insn. Must go here 293 because it needs <prefix>-desc.h for CGEN_INT_INSN_P. */ 294 295 static void 296 put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 297 CGEN_INSN_BYTES_PTR buf, 298 int length, 299 int insn_length, 300 CGEN_INSN_INT value) 301 { 302 /* For architectures with insns smaller than the base-insn-bitsize, 303 length may be too big. */ 304 if (length > insn_length) 305 *buf = value; 306 else 307 { 308 int shift = insn_length - length; 309 /* Written this way to avoid undefined behaviour. */ 310 CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1; 311 312 *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift); 313 } 314 } 315 #endif 316 317 /* Operand extraction. */ 319 320 #if ! CGEN_INT_INSN_P 321 322 /* Subroutine of extract_normal. 323 Ensure sufficient bytes are cached in EX_INFO. 324 OFFSET is the offset in bytes from the start of the insn of the value. 325 BYTES is the length of the needed value. 326 Returns 1 for success, 0 for failure. */ 327 328 static CGEN_INLINE int 329 fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 330 CGEN_EXTRACT_INFO *ex_info, 331 int offset, 332 int bytes, 333 bfd_vma pc) 334 { 335 /* It's doubtful that the middle part has already been fetched so 336 we don't optimize that case. kiss. */ 337 unsigned int mask; 338 disassemble_info *info = (disassemble_info *) ex_info->dis_info; 339 340 /* First do a quick check. */ 341 mask = (1 << bytes) - 1; 342 if (((ex_info->valid >> offset) & mask) == mask) 343 return 1; 344 345 /* Search for the first byte we need to read. */ 346 for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1) 347 if (! (mask & ex_info->valid)) 348 break; 349 350 if (bytes) 351 { 352 int status; 353 354 pc += offset; 355 status = (*info->read_memory_func) 356 (pc, ex_info->insn_bytes + offset, bytes, info); 357 358 if (status != 0) 359 { 360 (*info->memory_error_func) (status, pc, info); 361 return 0; 362 } 363 364 ex_info->valid |= ((1 << bytes) - 1) << offset; 365 } 366 367 return 1; 368 } 369 370 /* Subroutine of extract_normal. */ 371 372 static CGEN_INLINE long 373 extract_1 (CGEN_CPU_DESC cd, 374 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, 375 int start, 376 int length, 377 int word_length, 378 unsigned char *bufp, 379 bfd_vma pc ATTRIBUTE_UNUSED) 380 { 381 unsigned long x; 382 int shift; 383 384 x = cgen_get_insn_value (cd, bufp, word_length); 385 386 if (CGEN_INSN_LSB0_P) 387 shift = (start + 1) - length; 388 else 389 shift = (word_length - (start + length)); 390 return x >> shift; 391 } 392 393 #endif /* ! CGEN_INT_INSN_P */ 394 395 /* Default extraction routine. 396 397 INSN_VALUE is the first base_insn_bitsize bits of the insn in host order, 398 or sometimes less for cases like the m32r where the base insn size is 32 399 but some insns are 16 bits. 400 ATTRS is a mask of the boolean attributes. We only need `SIGNED', 401 but for generality we take a bitmask of all of them. 402 WORD_OFFSET is the offset in bits from the start of the insn of the value. 403 WORD_LENGTH is the length of the word in bits in which the value resides. 404 START is the starting bit number in the word, architecture origin. 405 LENGTH is the length of VALUE in bits. 406 TOTAL_LENGTH is the total length of the insn in bits. 407 408 Returns 1 for success, 0 for failure. */ 409 410 /* ??? The return code isn't properly used. wip. */ 411 412 /* ??? This doesn't handle bfd_vma's. Create another function when 413 necessary. */ 414 415 static int 416 extract_normal (CGEN_CPU_DESC cd, 417 #if ! CGEN_INT_INSN_P 418 CGEN_EXTRACT_INFO *ex_info, 419 #else 420 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED, 421 #endif 422 CGEN_INSN_INT insn_value, 423 unsigned int attrs, 424 unsigned int word_offset, 425 unsigned int start, 426 unsigned int length, 427 unsigned int word_length, 428 unsigned int total_length, 429 #if ! CGEN_INT_INSN_P 430 bfd_vma pc, 431 #else 432 bfd_vma pc ATTRIBUTE_UNUSED, 433 #endif 434 long *valuep) 435 { 436 long value, mask; 437 438 /* If LENGTH is zero, this operand doesn't contribute to the value 439 so give it a standard value of zero. */ 440 if (length == 0) 441 { 442 *valuep = 0; 443 return 1; 444 } 445 446 if (word_length > 8 * sizeof (CGEN_INSN_INT)) 447 abort (); 448 449 /* For architectures with insns smaller than the insn-base-bitsize, 450 word_length may be too big. */ 451 if (cd->min_insn_bitsize < cd->base_insn_bitsize) 452 { 453 if (word_offset + word_length > total_length) 454 word_length = total_length - word_offset; 455 } 456 457 /* Does the value reside in INSN_VALUE, and at the right alignment? */ 458 459 if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length)) 460 { 461 if (CGEN_INSN_LSB0_P) 462 value = insn_value >> ((word_offset + start + 1) - length); 463 else 464 value = insn_value >> (total_length - ( word_offset + start + length)); 465 } 466 467 #if ! CGEN_INT_INSN_P 468 469 else 470 { 471 unsigned char *bufp = ex_info->insn_bytes + word_offset / 8; 472 473 if (word_length > 8 * sizeof (CGEN_INSN_INT)) 474 abort (); 475 476 if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0) 477 return 0; 478 479 value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc); 480 } 481 482 #endif /* ! CGEN_INT_INSN_P */ 483 484 /* Written this way to avoid undefined behaviour. */ 485 mask = (((1L << (length - 1)) - 1) << 1) | 1; 486 487 value &= mask; 488 /* sign extend? */ 489 if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED) 490 && (value & (1L << (length - 1)))) 491 value |= ~mask; 492 493 *valuep = value; 494 495 return 1; 496 } 497 498 /* Default insn extractor. 499 500 INSN_VALUE is the first base_insn_bitsize bits, translated to host order. 501 The extracted fields are stored in FIELDS. 502 EX_INFO is used to handle reading variable length insns. 503 Return the length of the insn in bits, or 0 if no match, 504 or -1 if an error occurs fetching data (memory_error_func will have 505 been called). */ 506 507 static int 508 extract_insn_normal (CGEN_CPU_DESC cd, 509 const CGEN_INSN *insn, 510 CGEN_EXTRACT_INFO *ex_info, 511 CGEN_INSN_INT insn_value, 512 CGEN_FIELDS *fields, 513 bfd_vma pc) 514 { 515 const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn); 516 const CGEN_SYNTAX_CHAR_TYPE *syn; 517 518 CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn); 519 520 CGEN_INIT_EXTRACT (cd); 521 522 for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn) 523 { 524 int length; 525 526 if (CGEN_SYNTAX_CHAR_P (*syn)) 527 continue; 528 529 length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn), 530 ex_info, insn_value, fields, pc); 531 if (length <= 0) 532 return length; 533 } 534 535 /* We recognized and successfully extracted this insn. */ 536 return CGEN_INSN_BITSIZE (insn); 537 } 538 539 /* Machine generated code added here. */ 541 542 const char * xstormy16_cgen_insert_operand 543 (CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma); 544 545 /* Main entry point for operand insertion. 546 547 This function is basically just a big switch statement. Earlier versions 548 used tables to look up the function to use, but 549 - if the table contains both assembler and disassembler functions then 550 the disassembler contains much of the assembler and vice-versa, 551 - there's a lot of inlining possibilities as things grow, 552 - using a switch statement avoids the function call overhead. 553 554 This function could be moved into `parse_insn_normal', but keeping it 555 separate makes clear the interface between `parse_insn_normal' and each of 556 the handlers. It's also needed by GAS to insert operands that couldn't be 557 resolved during parsing. */ 558 559 const char * 560 xstormy16_cgen_insert_operand (CGEN_CPU_DESC cd, 561 int opindex, 562 CGEN_FIELDS * fields, 563 CGEN_INSN_BYTES_PTR buffer, 564 bfd_vma pc ATTRIBUTE_UNUSED) 565 { 566 const char * errmsg = NULL; 567 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); 568 569 switch (opindex) 570 { 571 case XSTORMY16_OPERAND_RB : 572 errmsg = insert_normal (cd, fields->f_Rb, 0, 0, 17, 3, 32, total_length, buffer); 573 break; 574 case XSTORMY16_OPERAND_RBJ : 575 errmsg = insert_normal (cd, fields->f_Rbj, 0, 0, 11, 1, 32, total_length, buffer); 576 break; 577 case XSTORMY16_OPERAND_RD : 578 errmsg = insert_normal (cd, fields->f_Rd, 0, 0, 12, 4, 32, total_length, buffer); 579 break; 580 case XSTORMY16_OPERAND_RDM : 581 errmsg = insert_normal (cd, fields->f_Rdm, 0, 0, 13, 3, 32, total_length, buffer); 582 break; 583 case XSTORMY16_OPERAND_RM : 584 errmsg = insert_normal (cd, fields->f_Rm, 0, 0, 4, 3, 32, total_length, buffer); 585 break; 586 case XSTORMY16_OPERAND_RS : 587 errmsg = insert_normal (cd, fields->f_Rs, 0, 0, 8, 4, 32, total_length, buffer); 588 break; 589 case XSTORMY16_OPERAND_ABS24 : 590 { 591 { 592 FLD (f_abs24_1) = ((FLD (f_abs24)) & (255)); 593 FLD (f_abs24_2) = ((UINT) (FLD (f_abs24)) >> (8)); 594 } 595 errmsg = insert_normal (cd, fields->f_abs24_1, 0, 0, 8, 8, 32, total_length, buffer); 596 if (errmsg) 597 break; 598 errmsg = insert_normal (cd, fields->f_abs24_2, 0, 0, 16, 16, 32, total_length, buffer); 599 if (errmsg) 600 break; 601 } 602 break; 603 case XSTORMY16_OPERAND_BCOND2 : 604 errmsg = insert_normal (cd, fields->f_op2, 0, 0, 4, 4, 32, total_length, buffer); 605 break; 606 case XSTORMY16_OPERAND_BCOND5 : 607 errmsg = insert_normal (cd, fields->f_op5, 0, 0, 16, 4, 32, total_length, buffer); 608 break; 609 case XSTORMY16_OPERAND_HMEM8 : 610 { 611 long value = fields->f_hmem8; 612 value = ((value) - (32512)); 613 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 8, 32, total_length, buffer); 614 } 615 break; 616 case XSTORMY16_OPERAND_IMM12 : 617 errmsg = insert_normal (cd, fields->f_imm12, 0|(1<<CGEN_IFLD_SIGNED), 0, 20, 12, 32, total_length, buffer); 618 break; 619 case XSTORMY16_OPERAND_IMM16 : 620 errmsg = insert_normal (cd, fields->f_imm16, 0|(1<<CGEN_IFLD_SIGN_OPT), 0, 16, 16, 32, total_length, buffer); 621 break; 622 case XSTORMY16_OPERAND_IMM2 : 623 errmsg = insert_normal (cd, fields->f_imm2, 0, 0, 10, 2, 32, total_length, buffer); 624 break; 625 case XSTORMY16_OPERAND_IMM3 : 626 errmsg = insert_normal (cd, fields->f_imm3, 0, 0, 4, 3, 32, total_length, buffer); 627 break; 628 case XSTORMY16_OPERAND_IMM3B : 629 errmsg = insert_normal (cd, fields->f_imm3b, 0, 0, 17, 3, 32, total_length, buffer); 630 break; 631 case XSTORMY16_OPERAND_IMM4 : 632 errmsg = insert_normal (cd, fields->f_imm4, 0, 0, 8, 4, 32, total_length, buffer); 633 break; 634 case XSTORMY16_OPERAND_IMM8 : 635 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 8, 8, 32, total_length, buffer); 636 break; 637 case XSTORMY16_OPERAND_IMM8SMALL : 638 errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 8, 8, 32, total_length, buffer); 639 break; 640 case XSTORMY16_OPERAND_LMEM8 : 641 errmsg = insert_normal (cd, fields->f_lmem8, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 8, 32, total_length, buffer); 642 break; 643 case XSTORMY16_OPERAND_REL12 : 644 { 645 long value = fields->f_rel12; 646 value = ((value) - (((pc) + (4)))); 647 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 20, 12, 32, total_length, buffer); 648 } 649 break; 650 case XSTORMY16_OPERAND_REL12A : 651 { 652 long value = fields->f_rel12a; 653 value = ((SI) (((value) - (((pc) + (2))))) >> (1)); 654 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 4, 11, 32, total_length, buffer); 655 } 656 break; 657 case XSTORMY16_OPERAND_REL8_2 : 658 { 659 long value = fields->f_rel8_2; 660 value = ((value) - (((pc) + (2)))); 661 errmsg = insert_normal (cd, value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 8, 8, 32, total_length, buffer); 662 } 663 break; 664 case XSTORMY16_OPERAND_REL8_4 : 665 { 666 long value = fields->f_rel8_4; 667 value = ((value) - (((pc) + (4)))); 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_WS2 : 672 errmsg = insert_normal (cd, fields->f_op2m, 0, 0, 7, 1, 32, total_length, buffer); 673 break; 674 675 default : 676 /* xgettext:c-format */ 677 fprintf (stderr, _("Unrecognized field %d while building insn.\n"), 678 opindex); 679 abort (); 680 } 681 682 return errmsg; 683 } 684 685 int xstormy16_cgen_extract_operand 686 (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma); 687 688 /* Main entry point for operand extraction. 689 The result is <= 0 for error, >0 for success. 690 ??? Actual values aren't well defined right now. 691 692 This function is basically just a big switch statement. Earlier versions 693 used tables to look up the function to use, but 694 - if the table contains both assembler and disassembler functions then 695 the disassembler contains much of the assembler and vice-versa, 696 - there's a lot of inlining possibilities as things grow, 697 - using a switch statement avoids the function call overhead. 698 699 This function could be moved into `print_insn_normal', but keeping it 700 separate makes clear the interface between `print_insn_normal' and each of 701 the handlers. */ 702 703 int 704 xstormy16_cgen_extract_operand (CGEN_CPU_DESC cd, 705 int opindex, 706 CGEN_EXTRACT_INFO *ex_info, 707 CGEN_INSN_INT insn_value, 708 CGEN_FIELDS * fields, 709 bfd_vma pc) 710 { 711 /* Assume success (for those operands that are nops). */ 712 int length = 1; 713 unsigned int total_length = CGEN_FIELDS_BITSIZE (fields); 714 715 switch (opindex) 716 { 717 case XSTORMY16_OPERAND_RB : 718 length = extract_normal (cd, ex_info, insn_value, 0, 0, 17, 3, 32, total_length, pc, & fields->f_Rb); 719 break; 720 case XSTORMY16_OPERAND_RBJ : 721 length = extract_normal (cd, ex_info, insn_value, 0, 0, 11, 1, 32, total_length, pc, & fields->f_Rbj); 722 break; 723 case XSTORMY16_OPERAND_RD : 724 length = extract_normal (cd, ex_info, insn_value, 0, 0, 12, 4, 32, total_length, pc, & fields->f_Rd); 725 break; 726 case XSTORMY16_OPERAND_RDM : 727 length = extract_normal (cd, ex_info, insn_value, 0, 0, 13, 3, 32, total_length, pc, & fields->f_Rdm); 728 break; 729 case XSTORMY16_OPERAND_RM : 730 length = extract_normal (cd, ex_info, insn_value, 0, 0, 4, 3, 32, total_length, pc, & fields->f_Rm); 731 break; 732 case XSTORMY16_OPERAND_RS : 733 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 4, 32, total_length, pc, & fields->f_Rs); 734 break; 735 case XSTORMY16_OPERAND_ABS24 : 736 { 737 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 8, 32, total_length, pc, & fields->f_abs24_1); 738 if (length <= 0) break; 739 length = extract_normal (cd, ex_info, insn_value, 0, 0, 16, 16, 32, total_length, pc, & fields->f_abs24_2); 740 if (length <= 0) break; 741 FLD (f_abs24) = ((((FLD (f_abs24_2)) << (8))) | (FLD (f_abs24_1))); 742 } 743 break; 744 case XSTORMY16_OPERAND_BCOND2 : 745 length = extract_normal (cd, ex_info, insn_value, 0, 0, 4, 4, 32, total_length, pc, & fields->f_op2); 746 break; 747 case XSTORMY16_OPERAND_BCOND5 : 748 length = extract_normal (cd, ex_info, insn_value, 0, 0, 16, 4, 32, total_length, pc, & fields->f_op5); 749 break; 750 case XSTORMY16_OPERAND_HMEM8 : 751 { 752 long value; 753 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 8, 32, total_length, pc, & value); 754 value = ((value) + (32512)); 755 fields->f_hmem8 = value; 756 } 757 break; 758 case XSTORMY16_OPERAND_IMM12 : 759 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED), 0, 20, 12, 32, total_length, pc, & fields->f_imm12); 760 break; 761 case XSTORMY16_OPERAND_IMM16 : 762 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGN_OPT), 0, 16, 16, 32, total_length, pc, & fields->f_imm16); 763 break; 764 case XSTORMY16_OPERAND_IMM2 : 765 length = extract_normal (cd, ex_info, insn_value, 0, 0, 10, 2, 32, total_length, pc, & fields->f_imm2); 766 break; 767 case XSTORMY16_OPERAND_IMM3 : 768 length = extract_normal (cd, ex_info, insn_value, 0, 0, 4, 3, 32, total_length, pc, & fields->f_imm3); 769 break; 770 case XSTORMY16_OPERAND_IMM3B : 771 length = extract_normal (cd, ex_info, insn_value, 0, 0, 17, 3, 32, total_length, pc, & fields->f_imm3b); 772 break; 773 case XSTORMY16_OPERAND_IMM4 : 774 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 4, 32, total_length, pc, & fields->f_imm4); 775 break; 776 case XSTORMY16_OPERAND_IMM8 : 777 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 8, 32, total_length, pc, & fields->f_imm8); 778 break; 779 case XSTORMY16_OPERAND_IMM8SMALL : 780 length = extract_normal (cd, ex_info, insn_value, 0, 0, 8, 8, 32, total_length, pc, & fields->f_imm8); 781 break; 782 case XSTORMY16_OPERAND_LMEM8 : 783 length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 8, 32, total_length, pc, & fields->f_lmem8); 784 break; 785 case XSTORMY16_OPERAND_REL12 : 786 { 787 long value; 788 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); 789 value = ((value) + (((pc) + (4)))); 790 fields->f_rel12 = value; 791 } 792 break; 793 case XSTORMY16_OPERAND_REL12A : 794 { 795 long value; 796 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); 797 value = ((((value) << (1))) + (((pc) + (2)))); 798 fields->f_rel12a = value; 799 } 800 break; 801 case XSTORMY16_OPERAND_REL8_2 : 802 { 803 long value; 804 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); 805 value = ((value) + (((pc) + (2)))); 806 fields->f_rel8_2 = value; 807 } 808 break; 809 case XSTORMY16_OPERAND_REL8_4 : 810 { 811 long value; 812 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); 813 value = ((value) + (((pc) + (4)))); 814 fields->f_rel8_4 = value; 815 } 816 break; 817 case XSTORMY16_OPERAND_WS2 : 818 length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 1, 32, total_length, pc, & fields->f_op2m); 819 break; 820 821 default : 822 /* xgettext:c-format */ 823 fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"), 824 opindex); 825 abort (); 826 } 827 828 return length; 829 } 830 831 cgen_insert_fn * const xstormy16_cgen_insert_handlers[] = 832 { 833 insert_insn_normal, 834 }; 835 836 cgen_extract_fn * const xstormy16_cgen_extract_handlers[] = 837 { 838 extract_insn_normal, 839 }; 840 841 int xstormy16_cgen_get_int_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); 842 bfd_vma xstormy16_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *); 843 844 /* Getting values from cgen_fields is handled by a collection of functions. 845 They are distinguished by the type of the VALUE argument they return. 846 TODO: floating point, inlining support, remove cases where result type 847 not appropriate. */ 848 849 int 850 xstormy16_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 851 int opindex, 852 const CGEN_FIELDS * fields) 853 { 854 int value; 855 856 switch (opindex) 857 { 858 case XSTORMY16_OPERAND_RB : 859 value = fields->f_Rb; 860 break; 861 case XSTORMY16_OPERAND_RBJ : 862 value = fields->f_Rbj; 863 break; 864 case XSTORMY16_OPERAND_RD : 865 value = fields->f_Rd; 866 break; 867 case XSTORMY16_OPERAND_RDM : 868 value = fields->f_Rdm; 869 break; 870 case XSTORMY16_OPERAND_RM : 871 value = fields->f_Rm; 872 break; 873 case XSTORMY16_OPERAND_RS : 874 value = fields->f_Rs; 875 break; 876 case XSTORMY16_OPERAND_ABS24 : 877 value = fields->f_abs24; 878 break; 879 case XSTORMY16_OPERAND_BCOND2 : 880 value = fields->f_op2; 881 break; 882 case XSTORMY16_OPERAND_BCOND5 : 883 value = fields->f_op5; 884 break; 885 case XSTORMY16_OPERAND_HMEM8 : 886 value = fields->f_hmem8; 887 break; 888 case XSTORMY16_OPERAND_IMM12 : 889 value = fields->f_imm12; 890 break; 891 case XSTORMY16_OPERAND_IMM16 : 892 value = fields->f_imm16; 893 break; 894 case XSTORMY16_OPERAND_IMM2 : 895 value = fields->f_imm2; 896 break; 897 case XSTORMY16_OPERAND_IMM3 : 898 value = fields->f_imm3; 899 break; 900 case XSTORMY16_OPERAND_IMM3B : 901 value = fields->f_imm3b; 902 break; 903 case XSTORMY16_OPERAND_IMM4 : 904 value = fields->f_imm4; 905 break; 906 case XSTORMY16_OPERAND_IMM8 : 907 value = fields->f_imm8; 908 break; 909 case XSTORMY16_OPERAND_IMM8SMALL : 910 value = fields->f_imm8; 911 break; 912 case XSTORMY16_OPERAND_LMEM8 : 913 value = fields->f_lmem8; 914 break; 915 case XSTORMY16_OPERAND_REL12 : 916 value = fields->f_rel12; 917 break; 918 case XSTORMY16_OPERAND_REL12A : 919 value = fields->f_rel12a; 920 break; 921 case XSTORMY16_OPERAND_REL8_2 : 922 value = fields->f_rel8_2; 923 break; 924 case XSTORMY16_OPERAND_REL8_4 : 925 value = fields->f_rel8_4; 926 break; 927 case XSTORMY16_OPERAND_WS2 : 928 value = fields->f_op2m; 929 break; 930 931 default : 932 /* xgettext:c-format */ 933 fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"), 934 opindex); 935 abort (); 936 } 937 938 return value; 939 } 940 941 bfd_vma 942 xstormy16_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 943 int opindex, 944 const CGEN_FIELDS * fields) 945 { 946 bfd_vma value; 947 948 switch (opindex) 949 { 950 case XSTORMY16_OPERAND_RB : 951 value = fields->f_Rb; 952 break; 953 case XSTORMY16_OPERAND_RBJ : 954 value = fields->f_Rbj; 955 break; 956 case XSTORMY16_OPERAND_RD : 957 value = fields->f_Rd; 958 break; 959 case XSTORMY16_OPERAND_RDM : 960 value = fields->f_Rdm; 961 break; 962 case XSTORMY16_OPERAND_RM : 963 value = fields->f_Rm; 964 break; 965 case XSTORMY16_OPERAND_RS : 966 value = fields->f_Rs; 967 break; 968 case XSTORMY16_OPERAND_ABS24 : 969 value = fields->f_abs24; 970 break; 971 case XSTORMY16_OPERAND_BCOND2 : 972 value = fields->f_op2; 973 break; 974 case XSTORMY16_OPERAND_BCOND5 : 975 value = fields->f_op5; 976 break; 977 case XSTORMY16_OPERAND_HMEM8 : 978 value = fields->f_hmem8; 979 break; 980 case XSTORMY16_OPERAND_IMM12 : 981 value = fields->f_imm12; 982 break; 983 case XSTORMY16_OPERAND_IMM16 : 984 value = fields->f_imm16; 985 break; 986 case XSTORMY16_OPERAND_IMM2 : 987 value = fields->f_imm2; 988 break; 989 case XSTORMY16_OPERAND_IMM3 : 990 value = fields->f_imm3; 991 break; 992 case XSTORMY16_OPERAND_IMM3B : 993 value = fields->f_imm3b; 994 break; 995 case XSTORMY16_OPERAND_IMM4 : 996 value = fields->f_imm4; 997 break; 998 case XSTORMY16_OPERAND_IMM8 : 999 value = fields->f_imm8; 1000 break; 1001 case XSTORMY16_OPERAND_IMM8SMALL : 1002 value = fields->f_imm8; 1003 break; 1004 case XSTORMY16_OPERAND_LMEM8 : 1005 value = fields->f_lmem8; 1006 break; 1007 case XSTORMY16_OPERAND_REL12 : 1008 value = fields->f_rel12; 1009 break; 1010 case XSTORMY16_OPERAND_REL12A : 1011 value = fields->f_rel12a; 1012 break; 1013 case XSTORMY16_OPERAND_REL8_2 : 1014 value = fields->f_rel8_2; 1015 break; 1016 case XSTORMY16_OPERAND_REL8_4 : 1017 value = fields->f_rel8_4; 1018 break; 1019 case XSTORMY16_OPERAND_WS2 : 1020 value = fields->f_op2m; 1021 break; 1022 1023 default : 1024 /* xgettext:c-format */ 1025 fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"), 1026 opindex); 1027 abort (); 1028 } 1029 1030 return value; 1031 } 1032 1033 void xstormy16_cgen_set_int_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, int); 1034 void xstormy16_cgen_set_vma_operand (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma); 1035 1036 /* Stuffing values in cgen_fields is handled by a collection of functions. 1037 They are distinguished by the type of the VALUE argument they accept. 1038 TODO: floating point, inlining support, remove cases where argument type 1039 not appropriate. */ 1040 1041 void 1042 xstormy16_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 1043 int opindex, 1044 CGEN_FIELDS * fields, 1045 int value) 1046 { 1047 switch (opindex) 1048 { 1049 case XSTORMY16_OPERAND_RB : 1050 fields->f_Rb = value; 1051 break; 1052 case XSTORMY16_OPERAND_RBJ : 1053 fields->f_Rbj = value; 1054 break; 1055 case XSTORMY16_OPERAND_RD : 1056 fields->f_Rd = value; 1057 break; 1058 case XSTORMY16_OPERAND_RDM : 1059 fields->f_Rdm = value; 1060 break; 1061 case XSTORMY16_OPERAND_RM : 1062 fields->f_Rm = value; 1063 break; 1064 case XSTORMY16_OPERAND_RS : 1065 fields->f_Rs = value; 1066 break; 1067 case XSTORMY16_OPERAND_ABS24 : 1068 fields->f_abs24 = value; 1069 break; 1070 case XSTORMY16_OPERAND_BCOND2 : 1071 fields->f_op2 = value; 1072 break; 1073 case XSTORMY16_OPERAND_BCOND5 : 1074 fields->f_op5 = value; 1075 break; 1076 case XSTORMY16_OPERAND_HMEM8 : 1077 fields->f_hmem8 = value; 1078 break; 1079 case XSTORMY16_OPERAND_IMM12 : 1080 fields->f_imm12 = value; 1081 break; 1082 case XSTORMY16_OPERAND_IMM16 : 1083 fields->f_imm16 = value; 1084 break; 1085 case XSTORMY16_OPERAND_IMM2 : 1086 fields->f_imm2 = value; 1087 break; 1088 case XSTORMY16_OPERAND_IMM3 : 1089 fields->f_imm3 = value; 1090 break; 1091 case XSTORMY16_OPERAND_IMM3B : 1092 fields->f_imm3b = value; 1093 break; 1094 case XSTORMY16_OPERAND_IMM4 : 1095 fields->f_imm4 = value; 1096 break; 1097 case XSTORMY16_OPERAND_IMM8 : 1098 fields->f_imm8 = value; 1099 break; 1100 case XSTORMY16_OPERAND_IMM8SMALL : 1101 fields->f_imm8 = value; 1102 break; 1103 case XSTORMY16_OPERAND_LMEM8 : 1104 fields->f_lmem8 = value; 1105 break; 1106 case XSTORMY16_OPERAND_REL12 : 1107 fields->f_rel12 = value; 1108 break; 1109 case XSTORMY16_OPERAND_REL12A : 1110 fields->f_rel12a = value; 1111 break; 1112 case XSTORMY16_OPERAND_REL8_2 : 1113 fields->f_rel8_2 = value; 1114 break; 1115 case XSTORMY16_OPERAND_REL8_4 : 1116 fields->f_rel8_4 = value; 1117 break; 1118 case XSTORMY16_OPERAND_WS2 : 1119 fields->f_op2m = value; 1120 break; 1121 1122 default : 1123 /* xgettext:c-format */ 1124 fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"), 1125 opindex); 1126 abort (); 1127 } 1128 } 1129 1130 void 1131 xstormy16_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED, 1132 int opindex, 1133 CGEN_FIELDS * fields, 1134 bfd_vma value) 1135 { 1136 switch (opindex) 1137 { 1138 case XSTORMY16_OPERAND_RB : 1139 fields->f_Rb = value; 1140 break; 1141 case XSTORMY16_OPERAND_RBJ : 1142 fields->f_Rbj = value; 1143 break; 1144 case XSTORMY16_OPERAND_RD : 1145 fields->f_Rd = value; 1146 break; 1147 case XSTORMY16_OPERAND_RDM : 1148 fields->f_Rdm = value; 1149 break; 1150 case XSTORMY16_OPERAND_RM : 1151 fields->f_Rm = value; 1152 break; 1153 case XSTORMY16_OPERAND_RS : 1154 fields->f_Rs = value; 1155 break; 1156 case XSTORMY16_OPERAND_ABS24 : 1157 fields->f_abs24 = value; 1158 break; 1159 case XSTORMY16_OPERAND_BCOND2 : 1160 fields->f_op2 = value; 1161 break; 1162 case XSTORMY16_OPERAND_BCOND5 : 1163 fields->f_op5 = value; 1164 break; 1165 case XSTORMY16_OPERAND_HMEM8 : 1166 fields->f_hmem8 = value; 1167 break; 1168 case XSTORMY16_OPERAND_IMM12 : 1169 fields->f_imm12 = value; 1170 break; 1171 case XSTORMY16_OPERAND_IMM16 : 1172 fields->f_imm16 = value; 1173 break; 1174 case XSTORMY16_OPERAND_IMM2 : 1175 fields->f_imm2 = value; 1176 break; 1177 case XSTORMY16_OPERAND_IMM3 : 1178 fields->f_imm3 = value; 1179 break; 1180 case XSTORMY16_OPERAND_IMM3B : 1181 fields->f_imm3b = value; 1182 break; 1183 case XSTORMY16_OPERAND_IMM4 : 1184 fields->f_imm4 = value; 1185 break; 1186 case XSTORMY16_OPERAND_IMM8 : 1187 fields->f_imm8 = value; 1188 break; 1189 case XSTORMY16_OPERAND_IMM8SMALL : 1190 fields->f_imm8 = value; 1191 break; 1192 case XSTORMY16_OPERAND_LMEM8 : 1193 fields->f_lmem8 = value; 1194 break; 1195 case XSTORMY16_OPERAND_REL12 : 1196 fields->f_rel12 = value; 1197 break; 1198 case XSTORMY16_OPERAND_REL12A : 1199 fields->f_rel12a = value; 1200 break; 1201 case XSTORMY16_OPERAND_REL8_2 : 1202 fields->f_rel8_2 = value; 1203 break; 1204 case XSTORMY16_OPERAND_REL8_4 : 1205 fields->f_rel8_4 = value; 1206 break; 1207 case XSTORMY16_OPERAND_WS2 : 1208 fields->f_op2m = value; 1209 break; 1210 1211 default : 1212 /* xgettext:c-format */ 1213 fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"), 1214 opindex); 1215 abort (); 1216 } 1217 } 1218 1219 /* Function to call before using the instruction builder tables. */ 1220 1221 void 1222 xstormy16_cgen_init_ibld_table (CGEN_CPU_DESC cd) 1223 { 1224 cd->insert_handlers = & xstormy16_cgen_insert_handlers[0]; 1225 cd->extract_handlers = & xstormy16_cgen_extract_handlers[0]; 1226 1227 cd->insert_operand = xstormy16_cgen_insert_operand; 1228 cd->extract_operand = xstormy16_cgen_extract_operand; 1229 1230 cd->get_int_operand = xstormy16_cgen_get_int_operand; 1231 cd->set_int_operand = xstormy16_cgen_set_int_operand; 1232 cd->get_vma_operand = xstormy16_cgen_get_vma_operand; 1233 cd->set_vma_operand = xstormy16_cgen_set_vma_operand; 1234 } 1235
