opcodes/ip2k-ibld.c

   1 /* Instruction building/extraction support for ip2k. -*- C -*-
   2
   3    THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator.
   4    - the resultant file is machine generated, cgen-ibld.in isn't
   5
   6    Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2005
   7    Free Software Foundation, Inc.
   8
   9    This file is part of the GNU Binutils and GDB, the GNU debugger.
  10
  11    This program 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 2, or (at your option)
  14    any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program; if not, write to the Free Software Foundation, Inc.,
  23    51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  24
  25 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
  26    Keep that in mind.  */
  27
  28 #include "sysdep.h"
  29 #include <stdio.h>
  30 #include "ansidecl.h"
  31 #include "dis-asm.h"
  32 #include "bfd.h"
  33 #include "symcat.h"
  34 #include "ip2k-desc.h"
  35 #include "ip2k-opc.h"
  36 #include "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 \f
  73 /* Operand insertion.  */
  74
  75 #if ! CGEN_INT_INSN_P
  76
  77 /* Subroutine of insert_normal.  */
  78
  79 static CGEN_INLINE void
  80 insert_1 (CGEN_CPU_DESC cd,
  81           unsigned long value,
  82           int start,
  83           int length,
  84           int word_length,
  85           unsigned char *bufp)
  86 {
  87   unsigned long x,mask;
  88   int shift;
  89
  90   x = cgen_get_insn_value (cd, bufp, word_length);
  91
  92   /* Written this way to avoid undefined behaviour.  */
  93   mask = (((1L << (length - 1)) - 1) << 1) | 1;
  94   if (CGEN_INSN_LSB0_P)
  95     shift = (start + 1) - length;
  96   else
  97     shift = (word_length - (start + length));
  98   x = (x & ~(mask << shift)) | ((value & mask) << shift);
  99
 100   cgen_put_insn_value (cd, bufp, word_length, (bfd_vma) x);
 101 }
 102
 103 #endif /* ! CGEN_INT_INSN_P */
 104
 105 /* Default insertion routine.
 106
 107    ATTRS is a mask of the boolean attributes.
 108    WORD_OFFSET is the offset in bits from the start of the insn of the value.
 109    WORD_LENGTH is the length of the word in bits in which the value resides.
 110    START is the starting bit number in the word, architecture origin.
 111    LENGTH is the length of VALUE in bits.
 112    TOTAL_LENGTH is the total length of the insn in bits.
 113
 114    The result is an error message or NULL if success.  */
 115
 116 /* ??? This duplicates functionality with bfd's howto table and
 117    bfd_install_relocation.  */
 118 /* ??? This doesn't handle bfd_vma's.  Create another function when
 119    necessary.  */
 120
 121 static const char *
 122 insert_normal (CGEN_CPU_DESC cd,
 123                long value,
 124                unsigned int attrs,
 125                unsigned int word_offset,
 126                unsigned int start,
 127                unsigned int length,
 128                unsigned int word_length,
 129                unsigned int total_length,
 130                CGEN_INSN_BYTES_PTR buffer)
 131 {
 132   static char errbuf[100];
 133   /* Written this way to avoid undefined behaviour.  */
 134   unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1;
 135
 136   /* If LENGTH is zero, this operand doesn't contribute to the value.  */
 137   if (length == 0)
 138     return NULL;
 139
 140   if (word_length > 32)
 141     abort ();
 142
 143   /* For architectures with insns smaller than the base-insn-bitsize,
 144      word_length may be too big.  */
 145   if (cd->min_insn_bitsize < cd->base_insn_bitsize)
 146     {
 147       if (word_offset == 0
 148           && word_length > total_length)
 149         word_length = total_length;
 150     }
 151
 152   /* Ensure VALUE will fit.  */
 153   if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGN_OPT))
 154     {
 155       long minval = - (1L << (length - 1));
 156       unsigned long maxval = mask;
 157
 158       if ((value > 0 && (unsigned long) value > maxval)
 159           || value < minval)
 160         {
 161           /* xgettext:c-format */
 162           sprintf (errbuf,
 163                    _("operand out of range (%ld not between %ld and %lu)"),
 164                    value, minval, maxval);
 165           return errbuf;
 166         }
 167     }
 168   else if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED))
 169     {
 170       unsigned long maxval = mask;
 171
 172       if ((unsigned long) value > maxval)
 173         {
 174           /* xgettext:c-format */
 175           sprintf (errbuf,
 176                    _("operand out of range (%lu not between 0 and %lu)"),
 177                    value, maxval);
 178           return errbuf;
 179         }
 180     }
 181   else
 182     {
 183       if (! cgen_signed_overflow_ok_p (cd))
 184         {
 185           long minval = - (1L << (length - 1));
 186           long maxval =   (1L << (length - 1)) - 1;
 187
 188           if (value < minval || value > maxval)
 189             {
 190               sprintf
 191                 /* xgettext:c-format */
 192                 (errbuf, _("operand out of range (%ld not between %ld and %ld)"),
 193                  value, minval, maxval);
 194               return errbuf;
 195             }
 196         }
 197     }
 198
 199 #if CGEN_INT_INSN_P
 200
 201   {
 202     int shift;
 203
 204     if (CGEN_INSN_LSB0_P)
 205       shift = (word_offset + start + 1) - length;
 206     else
 207       shift = total_length - (word_offset + start + length);
 208     *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);
 209   }
 210
 211 #else /* ! CGEN_INT_INSN_P */
 212
 213   {
 214     unsigned char *bufp = (unsigned char *) buffer + word_offset / 8;
 215
 216     insert_1 (cd, value, start, length, word_length, bufp);
 217   }
 218
 219 #endif /* ! CGEN_INT_INSN_P */
 220
 221   return NULL;
 222 }
 223
 224 /* Default insn builder (insert handler).
 225    The instruction is recorded in CGEN_INT_INSN_P byte order (meaning
 226    that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is
 227    recorded in host byte order, otherwise BUFFER is an array of bytes
 228    and the value is recorded in target byte order).
 229    The result is an error message or NULL if success.  */
 230
 231 static const char *
 232 insert_insn_normal (CGEN_CPU_DESC cd,
 233                     const CGEN_INSN * insn,
 234                     CGEN_FIELDS * fields,
 235                     CGEN_INSN_BYTES_PTR buffer,
 236                     bfd_vma pc)
 237 {
 238   const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
 239   unsigned long value;
 240   const CGEN_SYNTAX_CHAR_TYPE * syn;
 241
 242   CGEN_INIT_INSERT (cd);
 243   value = CGEN_INSN_BASE_VALUE (insn);
 244
 245   /* If we're recording insns as numbers (rather than a string of bytes),
 246      target byte order handling is deferred until later.  */
 247
 248 #if CGEN_INT_INSN_P
 249
 250   put_insn_int_value (cd, buffer, cd->base_insn_bitsize,
 251                       CGEN_FIELDS_BITSIZE (fields), value);
 252
 253 #else
 254
 255   cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize,
 256                                         (unsigned) CGEN_FIELDS_BITSIZE (fields)),
 257                        value);
 258
 259 #endif /* ! CGEN_INT_INSN_P */
 260
 261   /* ??? It would be better to scan the format's fields.
 262      Still need to be able to insert a value based on the operand though;
 263      e.g. storing a branch displacement that got resolved later.
 264      Needs more thought first.  */
 265
 266   for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn)
 267     {
 268       const char *errmsg;
 269
 270       if (CGEN_SYNTAX_CHAR_P (* syn))
 271         continue;
 272
 273       errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
 274                                        fields, buffer, pc);
 275       if (errmsg)
 276         return errmsg;
 277     }
 278
 279   return NULL;
 280 }
 281
 282 #if CGEN_INT_INSN_P
 283 /* Cover function to store an insn value into an integral insn.  Must go here
 284    because it needs <prefix>-desc.h for CGEN_INT_INSN_P.  */
 285
 286 static void
 287 put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 288                     CGEN_INSN_BYTES_PTR buf,
 289                     int length,
 290                     int insn_length,
 291                     CGEN_INSN_INT value)
 292 {
 293   /* For architectures with insns smaller than the base-insn-bitsize,
 294      length may be too big.  */
 295   if (length > insn_length)
 296     *buf = value;
 297   else
 298     {
 299       int shift = insn_length - length;
 300       /* Written this way to avoid undefined behaviour.  */
 301       CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;
 302
 303       *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift);
 304     }
 305 }
 306 #endif
 307 \f
 308 /* Operand extraction.  */
 309
 310 #if ! CGEN_INT_INSN_P
 311
 312 /* Subroutine of extract_normal.
 313    Ensure sufficient bytes are cached in EX_INFO.
 314    OFFSET is the offset in bytes from the start of the insn of the value.
 315    BYTES is the length of the needed value.
 316    Returns 1 for success, 0 for failure.  */
 317
 318 static CGEN_INLINE int
 319 fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 320             CGEN_EXTRACT_INFO *ex_info,
 321             int offset,
 322             int bytes,
 323             bfd_vma pc)
 324 {
 325   /* It's doubtful that the middle part has already been fetched so
 326      we don't optimize that case.  kiss.  */
 327   unsigned int mask;
 328   disassemble_info *info = (disassemble_info *) ex_info->dis_info;
 329
 330   /* First do a quick check.  */
 331   mask = (1 << bytes) - 1;
 332   if (((ex_info->valid >> offset) & mask) == mask)
 333     return 1;
 334
 335   /* Search for the first byte we need to read.  */
 336   for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1)
 337     if (! (mask & ex_info->valid))
 338       break;
 339
 340   if (bytes)
 341     {
 342       int status;
 343
 344       pc += offset;
 345       status = (*info->read_memory_func)
 346         (pc, ex_info->insn_bytes + offset, bytes, info);
 347
 348       if (status != 0)
 349         {
 350           (*info->memory_error_func) (status, pc, info);
 351           return 0;
 352         }
 353
 354       ex_info->valid |= ((1 << bytes) - 1) << offset;
 355     }
 356
 357   return 1;
 358 }
 359
 360 /* Subroutine of extract_normal.  */
 361
 362 static CGEN_INLINE long
 363 extract_1 (CGEN_CPU_DESC cd,
 364            CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
 365            int start,
 366            int length,
 367            int word_length,
 368            unsigned char *bufp,
 369            bfd_vma pc ATTRIBUTE_UNUSED)
 370 {
 371   unsigned long x;
 372   int shift;
 373
 374   x = cgen_get_insn_value (cd, bufp, word_length);
 375
 376   if (CGEN_INSN_LSB0_P)
 377     shift = (start + 1) - length;
 378   else
 379     shift = (word_length - (start + length));
 380   return x >> shift;
 381 }
 382
 383 #endif /* ! CGEN_INT_INSN_P */
 384
 385 /* Default extraction routine.
 386
 387    INSN_VALUE is the first base_insn_bitsize bits of the insn in host order,
 388    or sometimes less for cases like the m32r where the base insn size is 32
 389    but some insns are 16 bits.
 390    ATTRS is a mask of the boolean attributes.  We only need `SIGNED',
 391    but for generality we take a bitmask of all of them.
 392    WORD_OFFSET is the offset in bits from the start of the insn of the value.
 393    WORD_LENGTH is the length of the word in bits in which the value resides.
 394    START is the starting bit number in the word, architecture origin.
 395    LENGTH is the length of VALUE in bits.
 396    TOTAL_LENGTH is the total length of the insn in bits.
 397
 398    Returns 1 for success, 0 for failure.  */
 399
 400 /* ??? The return code isn't properly used.  wip.  */
 401
 402 /* ??? This doesn't handle bfd_vma's.  Create another function when
 403    necessary.  */
 404
 405 static int
 406 extract_normal (CGEN_CPU_DESC cd,
 407 #if ! CGEN_INT_INSN_P
 408                 CGEN_EXTRACT_INFO *ex_info,
 409 #else
 410                 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
 411 #endif
 412                 CGEN_INSN_INT insn_value,
 413                 unsigned int attrs,
 414                 unsigned int word_offset,
 415                 unsigned int start,
 416                 unsigned int length,
 417                 unsigned int word_length,
 418                 unsigned int total_length,
 419 #if ! CGEN_INT_INSN_P
 420                 bfd_vma pc,
 421 #else
 422                 bfd_vma pc ATTRIBUTE_UNUSED,
 423 #endif
 424                 long *valuep)
 425 {
 426   long value, mask;
 427
 428   /* If LENGTH is zero, this operand doesn't contribute to the value
 429      so give it a standard value of zero.  */
 430   if (length == 0)
 431     {
 432       *valuep = 0;
 433       return 1;
 434     }
 435
 436   if (word_length > 32)
 437     abort ();
 438
 439   /* For architectures with insns smaller than the insn-base-bitsize,
 440      word_length may be too big.  */
 441   if (cd->min_insn_bitsize < cd->base_insn_bitsize)
 442     {
 443       if (word_offset == 0
 444           && word_length > total_length)
 445         word_length = total_length;
 446     }
 447
 448   /* Does the value reside in INSN_VALUE, and at the right alignment?  */
 449
 450   if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length))
 451     {
 452       if (CGEN_INSN_LSB0_P)
 453         value = insn_value >> ((word_offset + start + 1) - length);
 454       else
 455         value = insn_value >> (total_length - ( word_offset + start + length));
 456     }
 457
 458 #if ! CGEN_INT_INSN_P
 459
 460   else
 461     {
 462       unsigned char *bufp = ex_info->insn_bytes + word_offset / 8;
 463
 464       if (word_length > 32)
 465         abort ();
 466
 467       if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)
 468         return 0;
 469
 470       value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);
 471     }
 472
 473 #endif /* ! CGEN_INT_INSN_P */
 474
 475   /* Written this way to avoid undefined behaviour.  */
 476   mask = (((1L << (length - 1)) - 1) << 1) | 1;
 477
 478   value &= mask;
 479   /* sign extend? */
 480   if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)
 481       && (value & (1L << (length - 1))))
 482     value |= ~mask;
 483
 484   *valuep = value;
 485
 486   return 1;
 487 }
 488
 489 /* Default insn extractor.
 490
 491    INSN_VALUE is the first base_insn_bitsize bits, translated to host order.
 492    The extracted fields are stored in FIELDS.
 493    EX_INFO is used to handle reading variable length insns.
 494    Return the length of the insn in bits, or 0 if no match,
 495    or -1 if an error occurs fetching data (memory_error_func will have
 496    been called).  */
 497
 498 static int
 499 extract_insn_normal (CGEN_CPU_DESC cd,
 500                      const CGEN_INSN *insn,
 501                      CGEN_EXTRACT_INFO *ex_info,
 502                      CGEN_INSN_INT insn_value,
 503                      CGEN_FIELDS *fields,
 504                      bfd_vma pc)
 505 {
 506   const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
 507   const CGEN_SYNTAX_CHAR_TYPE *syn;
 508
 509   CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
 510
 511   CGEN_INIT_EXTRACT (cd);
 512
 513   for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
 514     {
 515       int length;
 516
 517       if (CGEN_SYNTAX_CHAR_P (*syn))
 518         continue;
 519
 520       length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
 521                                         ex_info, insn_value, fields, pc);
 522       if (length <= 0)
 523         return length;
 524     }
 525
 526   /* We recognized and successfully extracted this insn.  */
 527   return CGEN_INSN_BITSIZE (insn);
 528 }
 529 \f
 530 /* Machine generated code added here.  */
 531
 532 const char * ip2k_cgen_insert_operand
 533   (CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
 534
 535 /* Main entry point for operand insertion.
 536
 537    This function is basically just a big switch statement.  Earlier versions
 538    used tables to look up the function to use, but
 539    - if the table contains both assembler and disassembler functions then
 540      the disassembler contains much of the assembler and vice-versa,
 541    - there's a lot of inlining possibilities as things grow,
 542    - using a switch statement avoids the function call overhead.
 543
 544    This function could be moved into `parse_insn_normal', but keeping it
 545    separate makes clear the interface between `parse_insn_normal' and each of
 546    the handlers.  It's also needed by GAS to insert operands that couldn't be
 547    resolved during parsing.  */
 548
 549 const char *
 550 ip2k_cgen_insert_operand (CGEN_CPU_DESC cd,
 551                              int opindex,
 552                              CGEN_FIELDS * fields,
 553                              CGEN_INSN_BYTES_PTR buffer,
 554                              bfd_vma pc ATTRIBUTE_UNUSED)
 555 {
 556   const char * errmsg = NULL;
 557   unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
 558
 559   switch (opindex)
 560     {
 561     case IP2K_OPERAND_ADDR16CJP :
 562       errmsg = insert_normal (cd, fields->f_addr16cjp, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, buffer);
 563       break;
 564     case IP2K_OPERAND_ADDR16H :
 565       errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
 566       break;
 567     case IP2K_OPERAND_ADDR16L :
 568       errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
 569       break;
 570     case IP2K_OPERAND_ADDR16P :
 571       errmsg = insert_normal (cd, fields->f_page3, 0, 0, 2, 3, 16, total_length, buffer);
 572       break;
 573     case IP2K_OPERAND_BITNO :
 574       errmsg = insert_normal (cd, fields->f_bitno, 0, 0, 11, 3, 16, total_length, buffer);
 575       break;
 576     case IP2K_OPERAND_CBIT :
 577       break;
 578     case IP2K_OPERAND_DCBIT :
 579       break;
 580     case IP2K_OPERAND_FR :
 581       errmsg = insert_normal (cd, fields->f_reg, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, buffer);
 582       break;
 583     case IP2K_OPERAND_LIT8 :
 584       errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
 585       break;
 586     case IP2K_OPERAND_PABITS :
 587       break;
 588     case IP2K_OPERAND_RETI3 :
 589       errmsg = insert_normal (cd, fields->f_reti3, 0, 0, 2, 3, 16, total_length, buffer);
 590       break;
 591     case IP2K_OPERAND_ZBIT :
 592       break;
 593
 594     default :
 595       /* xgettext:c-format */
 596       fprintf (stderr, _("Unrecognized field %d while building insn.\n"),
 597                opindex);
 598       abort ();
 599   }
 600
 601   return errmsg;
 602 }
 603
 604 int ip2k_cgen_extract_operand
 605   (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
 606
 607 /* Main entry point for operand extraction.
 608    The result is <= 0 for error, >0 for success.
 609    ??? Actual values aren't well defined right now.
 610
 611    This function is basically just a big switch statement.  Earlier versions
 612    used tables to look up the function to use, but
 613    - if the table contains both assembler and disassembler functions then
 614      the disassembler contains much of the assembler and vice-versa,
 615    - there's a lot of inlining possibilities as things grow,
 616    - using a switch statement avoids the function call overhead.
 617
 618    This function could be moved into `print_insn_normal', but keeping it
 619    separate makes clear the interface between `print_insn_normal' and each of
 620    the handlers.  */
 621
 622 int
 623 ip2k_cgen_extract_operand (CGEN_CPU_DESC cd,
 624                              int opindex,
 625                              CGEN_EXTRACT_INFO *ex_info,
 626                              CGEN_INSN_INT insn_value,
 627                              CGEN_FIELDS * fields,
 628                              bfd_vma pc)
 629 {
 630   /* Assume success (for those operands that are nops).  */
 631   int length = 1;
 632   unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
 633
 634   switch (opindex)
 635     {
 636     case IP2K_OPERAND_ADDR16CJP :
 637       length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, pc, & fields->f_addr16cjp);
 638       break;
 639     case IP2K_OPERAND_ADDR16H :
 640       length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8);
 641       break;
 642     case IP2K_OPERAND_ADDR16L :
 643       length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8);
 644       break;
 645     case IP2K_OPERAND_ADDR16P :
 646       length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_page3);
 647       break;
 648     case IP2K_OPERAND_BITNO :
 649       length = extract_normal (cd, ex_info, insn_value, 0, 0, 11, 3, 16, total_length, pc, & fields->f_bitno);
 650       break;
 651     case IP2K_OPERAND_CBIT :
 652       break;
 653     case IP2K_OPERAND_DCBIT :
 654       break;
 655     case IP2K_OPERAND_FR :
 656       length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, pc, & fields->f_reg);
 657       break;
 658     case IP2K_OPERAND_LIT8 :
 659       length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8);
 660       break;
 661     case IP2K_OPERAND_PABITS :
 662       break;
 663     case IP2K_OPERAND_RETI3 :
 664       length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_reti3);
 665       break;
 666     case IP2K_OPERAND_ZBIT :
 667       break;
 668
 669     default :
 670       /* xgettext:c-format */
 671       fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"),
 672                opindex);
 673       abort ();
 674     }
 675
 676   return length;
 677 }
 678
 679 cgen_insert_fn * const ip2k_cgen_insert_handlers[] =
 680 {
 681   insert_insn_normal,
 682 };
 683
 684 cgen_extract_fn * const ip2k_cgen_extract_handlers[] =
 685 {
 686   extract_insn_normal,
 687 };
 688
 689 int ip2k_cgen_get_int_operand     (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
 690 bfd_vma ip2k_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
 691
 692 /* Getting values from cgen_fields is handled by a collection of functions.
 693    They are distinguished by the type of the VALUE argument they return.
 694    TODO: floating point, inlining support, remove cases where result type
 695    not appropriate.  */
 696
 697 int
 698 ip2k_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 699                              int opindex,
 700                              const CGEN_FIELDS * fields)
 701 {
 702   int value;
 703
 704   switch (opindex)
 705     {
 706     case IP2K_OPERAND_ADDR16CJP :
 707       value = fields->f_addr16cjp;
 708       break;
 709     case IP2K_OPERAND_ADDR16H :
 710       value = fields->f_imm8;
 711       break;
 712     case IP2K_OPERAND_ADDR16L :
 713       value = fields->f_imm8;
 714       break;
 715     case IP2K_OPERAND_ADDR16P :
 716       value = fields->f_page3;
 717       break;
 718     case IP2K_OPERAND_BITNO :
 719       value = fields->f_bitno;
 720       break;
 721     case IP2K_OPERAND_CBIT :
 722       value = 0;
 723       break;
 724     case IP2K_OPERAND_DCBIT :
 725       value = 0;
 726       break;
 727     case IP2K_OPERAND_FR :
 728       value = fields->f_reg;
 729       break;
 730     case IP2K_OPERAND_LIT8 :
 731       value = fields->f_imm8;
 732       break;
 733     case IP2K_OPERAND_PABITS :
 734       value = 0;
 735       break;
 736     case IP2K_OPERAND_RETI3 :
 737       value = fields->f_reti3;
 738       break;
 739     case IP2K_OPERAND_ZBIT :
 740       value = 0;
 741       break;
 742
 743     default :
 744       /* xgettext:c-format */
 745       fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"),
 746                        opindex);
 747       abort ();
 748   }
 749
 750   return value;
 751 }
 752
 753 bfd_vma
 754 ip2k_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 755                              int opindex,
 756                              const CGEN_FIELDS * fields)
 757 {
 758   bfd_vma value;
 759
 760   switch (opindex)
 761     {
 762     case IP2K_OPERAND_ADDR16CJP :
 763       value = fields->f_addr16cjp;
 764       break;
 765     case IP2K_OPERAND_ADDR16H :
 766       value = fields->f_imm8;
 767       break;
 768     case IP2K_OPERAND_ADDR16L :
 769       value = fields->f_imm8;
 770       break;
 771     case IP2K_OPERAND_ADDR16P :
 772       value = fields->f_page3;
 773       break;
 774     case IP2K_OPERAND_BITNO :
 775       value = fields->f_bitno;
 776       break;
 777     case IP2K_OPERAND_CBIT :
 778       value = 0;
 779       break;
 780     case IP2K_OPERAND_DCBIT :
 781       value = 0;
 782       break;
 783     case IP2K_OPERAND_FR :
 784       value = fields->f_reg;
 785       break;
 786     case IP2K_OPERAND_LIT8 :
 787       value = fields->f_imm8;
 788       break;
 789     case IP2K_OPERAND_PABITS :
 790       value = 0;
 791       break;
 792     case IP2K_OPERAND_RETI3 :
 793       value = fields->f_reti3;
 794       break;
 795     case IP2K_OPERAND_ZBIT :
 796       value = 0;
 797       break;
 798
 799     default :
 800       /* xgettext:c-format */
 801       fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"),
 802                        opindex);
 803       abort ();
 804   }
 805
 806   return value;
 807 }
 808
 809 void ip2k_cgen_set_int_operand  (CGEN_CPU_DESC, int, CGEN_FIELDS *, int);
 810 void ip2k_cgen_set_vma_operand  (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma);
 811
 812 /* Stuffing values in cgen_fields is handled by a collection of functions.
 813    They are distinguished by the type of the VALUE argument they accept.
 814    TODO: floating point, inlining support, remove cases where argument type
 815    not appropriate.  */
 816
 817 void
 818 ip2k_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 819                              int opindex,
 820                              CGEN_FIELDS * fields,
 821                              int value)
 822 {
 823   switch (opindex)
 824     {
 825     case IP2K_OPERAND_ADDR16CJP :
 826       fields->f_addr16cjp = value;
 827       break;
 828     case IP2K_OPERAND_ADDR16H :
 829       fields->f_imm8 = value;
 830       break;
 831     case IP2K_OPERAND_ADDR16L :
 832       fields->f_imm8 = value;
 833       break;
 834     case IP2K_OPERAND_ADDR16P :
 835       fields->f_page3 = value;
 836       break;
 837     case IP2K_OPERAND_BITNO :
 838       fields->f_bitno = value;
 839       break;
 840     case IP2K_OPERAND_CBIT :
 841       break;
 842     case IP2K_OPERAND_DCBIT :
 843       break;
 844     case IP2K_OPERAND_FR :
 845       fields->f_reg = value;
 846       break;
 847     case IP2K_OPERAND_LIT8 :
 848       fields->f_imm8 = value;
 849       break;
 850     case IP2K_OPERAND_PABITS :
 851       break;
 852     case IP2K_OPERAND_RETI3 :
 853       fields->f_reti3 = value;
 854       break;
 855     case IP2K_OPERAND_ZBIT :
 856       break;
 857
 858     default :
 859       /* xgettext:c-format */
 860       fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"),
 861                        opindex);
 862       abort ();
 863   }
 864 }
 865
 866 void
 867 ip2k_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 868                              int opindex,
 869                              CGEN_FIELDS * fields,
 870                              bfd_vma value)
 871 {
 872   switch (opindex)
 873     {
 874     case IP2K_OPERAND_ADDR16CJP :
 875       fields->f_addr16cjp = value;
 876       break;
 877     case IP2K_OPERAND_ADDR16H :
 878       fields->f_imm8 = value;
 879       break;
 880     case IP2K_OPERAND_ADDR16L :
 881       fields->f_imm8 = value;
 882       break;
 883     case IP2K_OPERAND_ADDR16P :
 884       fields->f_page3 = value;
 885       break;
 886     case IP2K_OPERAND_BITNO :
 887       fields->f_bitno = value;
 888       break;
 889     case IP2K_OPERAND_CBIT :
 890       break;
 891     case IP2K_OPERAND_DCBIT :
 892       break;
 893     case IP2K_OPERAND_FR :
 894       fields->f_reg = value;
 895       break;
 896     case IP2K_OPERAND_LIT8 :
 897       fields->f_imm8 = value;
 898       break;
 899     case IP2K_OPERAND_PABITS :
 900       break;
 901     case IP2K_OPERAND_RETI3 :
 902       fields->f_reti3 = value;
 903       break;
 904     case IP2K_OPERAND_ZBIT :
 905       break;
 906
 907     default :
 908       /* xgettext:c-format */
 909       fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"),
 910                        opindex);
 911       abort ();
 912   }
 913 }
 914
 915 /* Function to call before using the instruction builder tables.  */
 916
 917 void
 918 ip2k_cgen_init_ibld_table (CGEN_CPU_DESC cd)
 919 {
 920   cd->insert_handlers = & ip2k_cgen_insert_handlers[0];
 921   cd->extract_handlers = & ip2k_cgen_extract_handlers[0];
 922
 923   cd->insert_operand = ip2k_cgen_insert_operand;
 924   cd->extract_operand = ip2k_cgen_extract_operand;
 925
 926   cd->get_int_operand = ip2k_cgen_get_int_operand;
 927   cd->set_int_operand = ip2k_cgen_set_int_operand;
 928   cd->get_vma_operand = ip2k_cgen_get_vma_operand;
 929   cd->set_vma_operand = ip2k_cgen_set_vma_operand;
 930 }