opcodes/ip2k-ibld.c

   1 /* DO NOT EDIT!  -*- buffer-read-only: t -*- vi:set ro:  */
   2 /* Instruction building/extraction support for ip2k. -*- C -*-
   3
   4    THIS FILE IS MACHINE GENERATED WITH CGEN: Cpu tools GENerator.
   5    - the resultant file is machine generated, cgen-ibld.in isn't
   6
   7    Copyright (C) 1996-2019 Free Software Foundation, Inc.
   8
   9    This file is part of libopcodes.
  10
  11    This library is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3, or (at your option)
  14    any later version.
  15
  16    It is distributed in the hope that it will be useful, but WITHOUT
  17    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  18    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  19    License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program; if not, write to the Free Software Foundation, Inc.,
  23    51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
  24
  25 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
  26    Keep that in mind.  */
  27
  28 #include "sysdep.h"
  29 #include <stdio.h>
  30 #include "ansidecl.h"
  31 #include "dis-asm.h"
  32 #include "bfd.h"
  33 #include "symcat.h"
  34 #include "ip2k-desc.h"
  35 #include "ip2k-opc.h"
  36 #include "cgen/basic-modes.h"
  37 #include "opintl.h"
  38 #include "safe-ctype.h"
  39
  40 #undef  min
  41 #define min(a,b) ((a) < (b) ? (a) : (b))
  42 #undef  max
  43 #define max(a,b) ((a) > (b) ? (a) : (b))
  44
  45 /* Used by the ifield rtx function.  */
  46 #define FLD(f) (fields->f)
  47
  48 static const char * insert_normal
  49   (CGEN_CPU_DESC, long, unsigned int, unsigned int, unsigned int,
  50    unsigned int, unsigned int, unsigned int, CGEN_INSN_BYTES_PTR);
  51 static const char * insert_insn_normal
  52   (CGEN_CPU_DESC, const CGEN_INSN *,
  53    CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
  54 static int extract_normal
  55   (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, CGEN_INSN_INT,
  56    unsigned int, unsigned int, unsigned int, unsigned int,
  57    unsigned int, unsigned int, bfd_vma, long *);
  58 static int extract_insn_normal
  59   (CGEN_CPU_DESC, const CGEN_INSN *, CGEN_EXTRACT_INFO *,
  60    CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
  61 #if CGEN_INT_INSN_P
  62 static void put_insn_int_value
  63   (CGEN_CPU_DESC, CGEN_INSN_BYTES_PTR, int, int, CGEN_INSN_INT);
  64 #endif
  65 #if ! CGEN_INT_INSN_P
  66 static CGEN_INLINE void insert_1
  67   (CGEN_CPU_DESC, unsigned long, int, int, int, unsigned char *);
  68 static CGEN_INLINE int fill_cache
  69   (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *,  int, int, bfd_vma);
  70 static CGEN_INLINE long extract_1
  71   (CGEN_CPU_DESC, CGEN_EXTRACT_INFO *, int, int, int, unsigned char *, bfd_vma);
  72 #endif
  73 \f
  74 /* Operand insertion.  */
  75
  76 #if ! CGEN_INT_INSN_P
  77
  78 /* Subroutine of insert_normal.  */
  79
  80 static CGEN_INLINE void
  81 insert_1 (CGEN_CPU_DESC cd,
  82           unsigned long value,
  83           int start,
  84           int length,
  85           int word_length,
  86           unsigned char *bufp)
  87 {
  88   unsigned long x,mask;
  89   int shift;
  90
  91   x = cgen_get_insn_value (cd, bufp, word_length);
  92
  93   /* Written this way to avoid undefined behaviour.  */
  94   mask = (((1L << (length - 1)) - 1) << 1) | 1;
  95   if (CGEN_INSN_LSB0_P)
  96     shift = (start + 1) - length;
  97   else
  98     shift = (word_length - (start + length));
  99   x = (x & ~(mask << shift)) | ((value & mask) << shift);
 100
 101   cgen_put_insn_value (cd, bufp, word_length, (bfd_vma) x);
 102 }
 103
 104 #endif /* ! CGEN_INT_INSN_P */
 105
 106 /* Default insertion routine.
 107
 108    ATTRS is a mask of the boolean attributes.
 109    WORD_OFFSET is the offset in bits from the start of the insn of the value.
 110    WORD_LENGTH is the length of the word in bits in which the value resides.
 111    START is the starting bit number in the word, architecture origin.
 112    LENGTH is the length of VALUE in bits.
 113    TOTAL_LENGTH is the total length of the insn in bits.
 114
 115    The result is an error message or NULL if success.  */
 116
 117 /* ??? This duplicates functionality with bfd's howto table and
 118    bfd_install_relocation.  */
 119 /* ??? This doesn't handle bfd_vma's.  Create another function when
 120    necessary.  */
 121
 122 static const char *
 123 insert_normal (CGEN_CPU_DESC cd,
 124                long value,
 125                unsigned int attrs,
 126                unsigned int word_offset,
 127                unsigned int start,
 128                unsigned int length,
 129                unsigned int word_length,
 130                unsigned int total_length,
 131                CGEN_INSN_BYTES_PTR buffer)
 132 {
 133   static char errbuf[100];
 134   /* Written this way to avoid undefined behaviour.  */
 135   unsigned long mask = (((1L << (length - 1)) - 1) << 1) | 1;
 136
 137   /* If LENGTH is zero, this operand doesn't contribute to the value.  */
 138   if (length == 0)
 139     return NULL;
 140
 141   if (word_length > 8 * sizeof (CGEN_INSN_INT))
 142     abort ();
 143
 144   /* For architectures with insns smaller than the base-insn-bitsize,
 145      word_length may be too big.  */
 146   if (cd->min_insn_bitsize < cd->base_insn_bitsize)
 147     {
 148       if (word_offset == 0
 149           && word_length > total_length)
 150         word_length = total_length;
 151     }
 152
 153   /* Ensure VALUE will fit.  */
 154   if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGN_OPT))
 155     {
 156       long minval = - (1L << (length - 1));
 157       unsigned long maxval = mask;
 158
 159       if ((value > 0 && (unsigned long) value > maxval)
 160           || value < minval)
 161         {
 162           /* xgettext:c-format */
 163           sprintf (errbuf,
 164                    _("operand out of range (%ld not between %ld and %lu)"),
 165                    value, minval, maxval);
 166           return errbuf;
 167         }
 168     }
 169   else if (! CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED))
 170     {
 171       unsigned long maxval = mask;
 172       unsigned long val = (unsigned long) value;
 173
 174       /* For hosts with a word size > 32 check to see if value has been sign
 175          extended beyond 32 bits.  If so then ignore these higher sign bits
 176          as the user is attempting to store a 32-bit signed value into an
 177          unsigned 32-bit field which is allowed.  */
 178       if (sizeof (unsigned long) > 4 && ((value >> 32) == -1))
 179         val &= 0xFFFFFFFF;
 180
 181       if (val > maxval)
 182         {
 183           /* xgettext:c-format */
 184           sprintf (errbuf,
 185                    _("operand out of range (0x%lx not between 0 and 0x%lx)"),
 186                    val, maxval);
 187           return errbuf;
 188         }
 189     }
 190   else
 191     {
 192       if (! cgen_signed_overflow_ok_p (cd))
 193         {
 194           long minval = - (1L << (length - 1));
 195           long maxval =   (1L << (length - 1)) - 1;
 196
 197           if (value < minval || value > maxval)
 198             {
 199               sprintf
 200                 /* xgettext:c-format */
 201                 (errbuf, _("operand out of range (%ld not between %ld and %ld)"),
 202                  value, minval, maxval);
 203               return errbuf;
 204             }
 205         }
 206     }
 207
 208 #if CGEN_INT_INSN_P
 209
 210   {
 211     int shift_within_word, shift_to_word, shift;
 212
 213     /* How to shift the value to BIT0 of the word.  */
 214     shift_to_word = total_length - (word_offset + word_length);
 215
 216     /* How to shift the value to the field within the word.  */
 217     if (CGEN_INSN_LSB0_P)
 218       shift_within_word = start + 1 - length;
 219     else
 220       shift_within_word = word_length - start - length;
 221
 222     /* The total SHIFT, then mask in the value.  */
 223     shift = shift_to_word + shift_within_word;
 224     *buffer = (*buffer & ~(mask << shift)) | ((value & mask) << shift);
 225   }
 226
 227 #else /* ! CGEN_INT_INSN_P */
 228
 229   {
 230     unsigned char *bufp = (unsigned char *) buffer + word_offset / 8;
 231
 232     insert_1 (cd, value, start, length, word_length, bufp);
 233   }
 234
 235 #endif /* ! CGEN_INT_INSN_P */
 236
 237   return NULL;
 238 }
 239
 240 /* Default insn builder (insert handler).
 241    The instruction is recorded in CGEN_INT_INSN_P byte order (meaning
 242    that if CGEN_INSN_BYTES_PTR is an int * and thus, the value is
 243    recorded in host byte order, otherwise BUFFER is an array of bytes
 244    and the value is recorded in target byte order).
 245    The result is an error message or NULL if success.  */
 246
 247 static const char *
 248 insert_insn_normal (CGEN_CPU_DESC cd,
 249                     const CGEN_INSN * insn,
 250                     CGEN_FIELDS * fields,
 251                     CGEN_INSN_BYTES_PTR buffer,
 252                     bfd_vma pc)
 253 {
 254   const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
 255   unsigned long value;
 256   const CGEN_SYNTAX_CHAR_TYPE * syn;
 257
 258   CGEN_INIT_INSERT (cd);
 259   value = CGEN_INSN_BASE_VALUE (insn);
 260
 261   /* If we're recording insns as numbers (rather than a string of bytes),
 262      target byte order handling is deferred until later.  */
 263
 264 #if CGEN_INT_INSN_P
 265
 266   put_insn_int_value (cd, buffer, cd->base_insn_bitsize,
 267                       CGEN_FIELDS_BITSIZE (fields), value);
 268
 269 #else
 270
 271   cgen_put_insn_value (cd, buffer, min ((unsigned) cd->base_insn_bitsize,
 272                                         (unsigned) CGEN_FIELDS_BITSIZE (fields)),
 273                        value);
 274
 275 #endif /* ! CGEN_INT_INSN_P */
 276
 277   /* ??? It would be better to scan the format's fields.
 278      Still need to be able to insert a value based on the operand though;
 279      e.g. storing a branch displacement that got resolved later.
 280      Needs more thought first.  */
 281
 282   for (syn = CGEN_SYNTAX_STRING (syntax); * syn; ++ syn)
 283     {
 284       const char *errmsg;
 285
 286       if (CGEN_SYNTAX_CHAR_P (* syn))
 287         continue;
 288
 289       errmsg = (* cd->insert_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
 290                                        fields, buffer, pc);
 291       if (errmsg)
 292         return errmsg;
 293     }
 294
 295   return NULL;
 296 }
 297
 298 #if CGEN_INT_INSN_P
 299 /* Cover function to store an insn value into an integral insn.  Must go here
 300    because it needs <prefix>-desc.h for CGEN_INT_INSN_P.  */
 301
 302 static void
 303 put_insn_int_value (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 304                     CGEN_INSN_BYTES_PTR buf,
 305                     int length,
 306                     int insn_length,
 307                     CGEN_INSN_INT value)
 308 {
 309   /* For architectures with insns smaller than the base-insn-bitsize,
 310      length may be too big.  */
 311   if (length > insn_length)
 312     *buf = value;
 313   else
 314     {
 315       int shift = insn_length - length;
 316       /* Written this way to avoid undefined behaviour.  */
 317       CGEN_INSN_INT mask = (((1L << (length - 1)) - 1) << 1) | 1;
 318
 319       *buf = (*buf & ~(mask << shift)) | ((value & mask) << shift);
 320     }
 321 }
 322 #endif
 323 \f
 324 /* Operand extraction.  */
 325
 326 #if ! CGEN_INT_INSN_P
 327
 328 /* Subroutine of extract_normal.
 329    Ensure sufficient bytes are cached in EX_INFO.
 330    OFFSET is the offset in bytes from the start of the insn of the value.
 331    BYTES is the length of the needed value.
 332    Returns 1 for success, 0 for failure.  */
 333
 334 static CGEN_INLINE int
 335 fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 336             CGEN_EXTRACT_INFO *ex_info,
 337             int offset,
 338             int bytes,
 339             bfd_vma pc)
 340 {
 341   /* It's doubtful that the middle part has already been fetched so
 342      we don't optimize that case.  kiss.  */
 343   unsigned int mask;
 344   disassemble_info *info = (disassemble_info *) ex_info->dis_info;
 345
 346   /* First do a quick check.  */
 347   mask = (1 << bytes) - 1;
 348   if (((ex_info->valid >> offset) & mask) == mask)
 349     return 1;
 350
 351   /* Search for the first byte we need to read.  */
 352   for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1)
 353     if (! (mask & ex_info->valid))
 354       break;
 355
 356   if (bytes)
 357     {
 358       int status;
 359
 360       pc += offset;
 361       status = (*info->read_memory_func)
 362         (pc, ex_info->insn_bytes + offset, bytes, info);
 363
 364       if (status != 0)
 365         {
 366           (*info->memory_error_func) (status, pc, info);
 367           return 0;
 368         }
 369
 370       ex_info->valid |= ((1 << bytes) - 1) << offset;
 371     }
 372
 373   return 1;
 374 }
 375
 376 /* Subroutine of extract_normal.  */
 377
 378 static CGEN_INLINE long
 379 extract_1 (CGEN_CPU_DESC cd,
 380            CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
 381            int start,
 382            int length,
 383            int word_length,
 384            unsigned char *bufp,
 385            bfd_vma pc ATTRIBUTE_UNUSED)
 386 {
 387   unsigned long x;
 388   int shift;
 389
 390   x = cgen_get_insn_value (cd, bufp, word_length);
 391
 392   if (CGEN_INSN_LSB0_P)
 393     shift = (start + 1) - length;
 394   else
 395     shift = (word_length - (start + length));
 396   return x >> shift;
 397 }
 398
 399 #endif /* ! CGEN_INT_INSN_P */
 400
 401 /* Default extraction routine.
 402
 403    INSN_VALUE is the first base_insn_bitsize bits of the insn in host order,
 404    or sometimes less for cases like the m32r where the base insn size is 32
 405    but some insns are 16 bits.
 406    ATTRS is a mask of the boolean attributes.  We only need `SIGNED',
 407    but for generality we take a bitmask of all of them.
 408    WORD_OFFSET is the offset in bits from the start of the insn of the value.
 409    WORD_LENGTH is the length of the word in bits in which the value resides.
 410    START is the starting bit number in the word, architecture origin.
 411    LENGTH is the length of VALUE in bits.
 412    TOTAL_LENGTH is the total length of the insn in bits.
 413
 414    Returns 1 for success, 0 for failure.  */
 415
 416 /* ??? The return code isn't properly used.  wip.  */
 417
 418 /* ??? This doesn't handle bfd_vma's.  Create another function when
 419    necessary.  */
 420
 421 static int
 422 extract_normal (CGEN_CPU_DESC cd,
 423 #if ! CGEN_INT_INSN_P
 424                 CGEN_EXTRACT_INFO *ex_info,
 425 #else
 426                 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
 427 #endif
 428                 CGEN_INSN_INT insn_value,
 429                 unsigned int attrs,
 430                 unsigned int word_offset,
 431                 unsigned int start,
 432                 unsigned int length,
 433                 unsigned int word_length,
 434                 unsigned int total_length,
 435 #if ! CGEN_INT_INSN_P
 436                 bfd_vma pc,
 437 #else
 438                 bfd_vma pc ATTRIBUTE_UNUSED,
 439 #endif
 440                 long *valuep)
 441 {
 442   long value, mask;
 443
 444   /* If LENGTH is zero, this operand doesn't contribute to the value
 445      so give it a standard value of zero.  */
 446   if (length == 0)
 447     {
 448       *valuep = 0;
 449       return 1;
 450     }
 451
 452   if (word_length > 8 * sizeof (CGEN_INSN_INT))
 453     abort ();
 454
 455   /* For architectures with insns smaller than the insn-base-bitsize,
 456      word_length may be too big.  */
 457   if (cd->min_insn_bitsize < cd->base_insn_bitsize)
 458     {
 459       if (word_offset + word_length > total_length)
 460         word_length = total_length - word_offset;
 461     }
 462
 463   /* Does the value reside in INSN_VALUE, and at the right alignment?  */
 464
 465   if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length))
 466     {
 467       if (CGEN_INSN_LSB0_P)
 468         value = insn_value >> ((word_offset + start + 1) - length);
 469       else
 470         value = insn_value >> (total_length - ( word_offset + start + length));
 471     }
 472
 473 #if ! CGEN_INT_INSN_P
 474
 475   else
 476     {
 477       unsigned char *bufp = ex_info->insn_bytes + word_offset / 8;
 478
 479       if (word_length > 8 * sizeof (CGEN_INSN_INT))
 480         abort ();
 481
 482       if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)
 483         return 0;
 484
 485       value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);
 486     }
 487
 488 #endif /* ! CGEN_INT_INSN_P */
 489
 490   /* Written this way to avoid undefined behaviour.  */
 491   mask = (((1L << (length - 1)) - 1) << 1) | 1;
 492
 493   value &= mask;
 494   /* sign extend? */
 495   if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)
 496       && (value & (1L << (length - 1))))
 497     value |= ~mask;
 498
 499   *valuep = value;
 500
 501   return 1;
 502 }
 503
 504 /* Default insn extractor.
 505
 506    INSN_VALUE is the first base_insn_bitsize bits, translated to host order.
 507    The extracted fields are stored in FIELDS.
 508    EX_INFO is used to handle reading variable length insns.
 509    Return the length of the insn in bits, or 0 if no match,
 510    or -1 if an error occurs fetching data (memory_error_func will have
 511    been called).  */
 512
 513 static int
 514 extract_insn_normal (CGEN_CPU_DESC cd,
 515                      const CGEN_INSN *insn,
 516                      CGEN_EXTRACT_INFO *ex_info,
 517                      CGEN_INSN_INT insn_value,
 518                      CGEN_FIELDS *fields,
 519                      bfd_vma pc)
 520 {
 521   const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
 522   const CGEN_SYNTAX_CHAR_TYPE *syn;
 523
 524   CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
 525
 526   CGEN_INIT_EXTRACT (cd);
 527
 528   for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
 529     {
 530       int length;
 531
 532       if (CGEN_SYNTAX_CHAR_P (*syn))
 533         continue;
 534
 535       length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
 536                                         ex_info, insn_value, fields, pc);
 537       if (length <= 0)
 538         return length;
 539     }
 540
 541   /* We recognized and successfully extracted this insn.  */
 542   return CGEN_INSN_BITSIZE (insn);
 543 }
 544 \f
 545 /* Machine generated code added here.  */
 546
 547 const char * ip2k_cgen_insert_operand
 548   (CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
 549
 550 /* Main entry point for operand insertion.
 551
 552    This function is basically just a big switch statement.  Earlier versions
 553    used tables to look up the function to use, but
 554    - if the table contains both assembler and disassembler functions then
 555      the disassembler contains much of the assembler and vice-versa,
 556    - there's a lot of inlining possibilities as things grow,
 557    - using a switch statement avoids the function call overhead.
 558
 559    This function could be moved into `parse_insn_normal', but keeping it
 560    separate makes clear the interface between `parse_insn_normal' and each of
 561    the handlers.  It's also needed by GAS to insert operands that couldn't be
 562    resolved during parsing.  */
 563
 564 const char *
 565 ip2k_cgen_insert_operand (CGEN_CPU_DESC cd,
 566                              int opindex,
 567                              CGEN_FIELDS * fields,
 568                              CGEN_INSN_BYTES_PTR buffer,
 569                              bfd_vma pc ATTRIBUTE_UNUSED)
 570 {
 571   const char * errmsg = NULL;
 572   unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
 573
 574   switch (opindex)
 575     {
 576     case IP2K_OPERAND_ADDR16CJP :
 577       errmsg = insert_normal (cd, fields->f_addr16cjp, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, buffer);
 578       break;
 579     case IP2K_OPERAND_ADDR16H :
 580       errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
 581       break;
 582     case IP2K_OPERAND_ADDR16L :
 583       errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
 584       break;
 585     case IP2K_OPERAND_ADDR16P :
 586       errmsg = insert_normal (cd, fields->f_page3, 0, 0, 2, 3, 16, total_length, buffer);
 587       break;
 588     case IP2K_OPERAND_BITNO :
 589       errmsg = insert_normal (cd, fields->f_bitno, 0, 0, 11, 3, 16, total_length, buffer);
 590       break;
 591     case IP2K_OPERAND_CBIT :
 592       break;
 593     case IP2K_OPERAND_DCBIT :
 594       break;
 595     case IP2K_OPERAND_FR :
 596       errmsg = insert_normal (cd, fields->f_reg, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, buffer);
 597       break;
 598     case IP2K_OPERAND_LIT8 :
 599       errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
 600       break;
 601     case IP2K_OPERAND_PABITS :
 602       break;
 603     case IP2K_OPERAND_RETI3 :
 604       errmsg = insert_normal (cd, fields->f_reti3, 0, 0, 2, 3, 16, total_length, buffer);
 605       break;
 606     case IP2K_OPERAND_ZBIT :
 607       break;
 608
 609     default :
 610       /* xgettext:c-format */
 611       opcodes_error_handler
 612         (_("internal error: unrecognized field %d while building insn"),
 613          opindex);
 614       abort ();
 615   }
 616
 617   return errmsg;
 618 }
 619
 620 int ip2k_cgen_extract_operand
 621   (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
 622
 623 /* Main entry point for operand extraction.
 624    The result is <= 0 for error, >0 for success.
 625    ??? Actual values aren't well defined right now.
 626
 627    This function is basically just a big switch statement.  Earlier versions
 628    used tables to look up the function to use, but
 629    - if the table contains both assembler and disassembler functions then
 630      the disassembler contains much of the assembler and vice-versa,
 631    - there's a lot of inlining possibilities as things grow,
 632    - using a switch statement avoids the function call overhead.
 633
 634    This function could be moved into `print_insn_normal', but keeping it
 635    separate makes clear the interface between `print_insn_normal' and each of
 636    the handlers.  */
 637
 638 int
 639 ip2k_cgen_extract_operand (CGEN_CPU_DESC cd,
 640                              int opindex,
 641                              CGEN_EXTRACT_INFO *ex_info,
 642                              CGEN_INSN_INT insn_value,
 643                              CGEN_FIELDS * fields,
 644                              bfd_vma pc)
 645 {
 646   /* Assume success (for those operands that are nops).  */
 647   int length = 1;
 648   unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
 649
 650   switch (opindex)
 651     {
 652     case IP2K_OPERAND_ADDR16CJP :
 653       length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, pc, & fields->f_addr16cjp);
 654       break;
 655     case IP2K_OPERAND_ADDR16H :
 656       length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8);
 657       break;
 658     case IP2K_OPERAND_ADDR16L :
 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_ADDR16P :
 662       length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_page3);
 663       break;
 664     case IP2K_OPERAND_BITNO :
 665       length = extract_normal (cd, ex_info, insn_value, 0, 0, 11, 3, 16, total_length, pc, & fields->f_bitno);
 666       break;
 667     case IP2K_OPERAND_CBIT :
 668       break;
 669     case IP2K_OPERAND_DCBIT :
 670       break;
 671     case IP2K_OPERAND_FR :
 672       length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, pc, & fields->f_reg);
 673       break;
 674     case IP2K_OPERAND_LIT8 :
 675       length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8);
 676       break;
 677     case IP2K_OPERAND_PABITS :
 678       break;
 679     case IP2K_OPERAND_RETI3 :
 680       length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_reti3);
 681       break;
 682     case IP2K_OPERAND_ZBIT :
 683       break;
 684
 685     default :
 686       /* xgettext:c-format */
 687       opcodes_error_handler
 688         (_("internal error: unrecognized field %d while decoding insn"),
 689          opindex);
 690       abort ();
 691     }
 692
 693   return length;
 694 }
 695
 696 cgen_insert_fn * const ip2k_cgen_insert_handlers[] =
 697 {
 698   insert_insn_normal,
 699 };
 700
 701 cgen_extract_fn * const ip2k_cgen_extract_handlers[] =
 702 {
 703   extract_insn_normal,
 704 };
 705
 706 int ip2k_cgen_get_int_operand     (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
 707 bfd_vma ip2k_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
 708
 709 /* Getting values from cgen_fields is handled by a collection of functions.
 710    They are distinguished by the type of the VALUE argument they return.
 711    TODO: floating point, inlining support, remove cases where result type
 712    not appropriate.  */
 713
 714 int
 715 ip2k_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 716                              int opindex,
 717                              const CGEN_FIELDS * fields)
 718 {
 719   int value;
 720
 721   switch (opindex)
 722     {
 723     case IP2K_OPERAND_ADDR16CJP :
 724       value = fields->f_addr16cjp;
 725       break;
 726     case IP2K_OPERAND_ADDR16H :
 727       value = fields->f_imm8;
 728       break;
 729     case IP2K_OPERAND_ADDR16L :
 730       value = fields->f_imm8;
 731       break;
 732     case IP2K_OPERAND_ADDR16P :
 733       value = fields->f_page3;
 734       break;
 735     case IP2K_OPERAND_BITNO :
 736       value = fields->f_bitno;
 737       break;
 738     case IP2K_OPERAND_CBIT :
 739       value = 0;
 740       break;
 741     case IP2K_OPERAND_DCBIT :
 742       value = 0;
 743       break;
 744     case IP2K_OPERAND_FR :
 745       value = fields->f_reg;
 746       break;
 747     case IP2K_OPERAND_LIT8 :
 748       value = fields->f_imm8;
 749       break;
 750     case IP2K_OPERAND_PABITS :
 751       value = 0;
 752       break;
 753     case IP2K_OPERAND_RETI3 :
 754       value = fields->f_reti3;
 755       break;
 756     case IP2K_OPERAND_ZBIT :
 757       value = 0;
 758       break;
 759
 760     default :
 761       /* xgettext:c-format */
 762       opcodes_error_handler
 763         (_("internal error: unrecognized field %d while getting int operand"),
 764          opindex);
 765       abort ();
 766   }
 767
 768   return value;
 769 }
 770
 771 bfd_vma
 772 ip2k_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 773                              int opindex,
 774                              const CGEN_FIELDS * fields)
 775 {
 776   bfd_vma value;
 777
 778   switch (opindex)
 779     {
 780     case IP2K_OPERAND_ADDR16CJP :
 781       value = fields->f_addr16cjp;
 782       break;
 783     case IP2K_OPERAND_ADDR16H :
 784       value = fields->f_imm8;
 785       break;
 786     case IP2K_OPERAND_ADDR16L :
 787       value = fields->f_imm8;
 788       break;
 789     case IP2K_OPERAND_ADDR16P :
 790       value = fields->f_page3;
 791       break;
 792     case IP2K_OPERAND_BITNO :
 793       value = fields->f_bitno;
 794       break;
 795     case IP2K_OPERAND_CBIT :
 796       value = 0;
 797       break;
 798     case IP2K_OPERAND_DCBIT :
 799       value = 0;
 800       break;
 801     case IP2K_OPERAND_FR :
 802       value = fields->f_reg;
 803       break;
 804     case IP2K_OPERAND_LIT8 :
 805       value = fields->f_imm8;
 806       break;
 807     case IP2K_OPERAND_PABITS :
 808       value = 0;
 809       break;
 810     case IP2K_OPERAND_RETI3 :
 811       value = fields->f_reti3;
 812       break;
 813     case IP2K_OPERAND_ZBIT :
 814       value = 0;
 815       break;
 816
 817     default :
 818       /* xgettext:c-format */
 819       opcodes_error_handler
 820         (_("internal error: unrecognized field %d while getting vma operand"),
 821          opindex);
 822       abort ();
 823   }
 824
 825   return value;
 826 }
 827
 828 void ip2k_cgen_set_int_operand  (CGEN_CPU_DESC, int, CGEN_FIELDS *, int);
 829 void ip2k_cgen_set_vma_operand  (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma);
 830
 831 /* Stuffing values in cgen_fields is handled by a collection of functions.
 832    They are distinguished by the type of the VALUE argument they accept.
 833    TODO: floating point, inlining support, remove cases where argument type
 834    not appropriate.  */
 835
 836 void
 837 ip2k_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 838                              int opindex,
 839                              CGEN_FIELDS * fields,
 840                              int value)
 841 {
 842   switch (opindex)
 843     {
 844     case IP2K_OPERAND_ADDR16CJP :
 845       fields->f_addr16cjp = value;
 846       break;
 847     case IP2K_OPERAND_ADDR16H :
 848       fields->f_imm8 = value;
 849       break;
 850     case IP2K_OPERAND_ADDR16L :
 851       fields->f_imm8 = value;
 852       break;
 853     case IP2K_OPERAND_ADDR16P :
 854       fields->f_page3 = value;
 855       break;
 856     case IP2K_OPERAND_BITNO :
 857       fields->f_bitno = value;
 858       break;
 859     case IP2K_OPERAND_CBIT :
 860       break;
 861     case IP2K_OPERAND_DCBIT :
 862       break;
 863     case IP2K_OPERAND_FR :
 864       fields->f_reg = value;
 865       break;
 866     case IP2K_OPERAND_LIT8 :
 867       fields->f_imm8 = value;
 868       break;
 869     case IP2K_OPERAND_PABITS :
 870       break;
 871     case IP2K_OPERAND_RETI3 :
 872       fields->f_reti3 = value;
 873       break;
 874     case IP2K_OPERAND_ZBIT :
 875       break;
 876
 877     default :
 878       /* xgettext:c-format */
 879       opcodes_error_handler
 880         (_("internal error: unrecognized field %d while setting int operand"),
 881          opindex);
 882       abort ();
 883   }
 884 }
 885
 886 void
 887 ip2k_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 888                              int opindex,
 889                              CGEN_FIELDS * fields,
 890                              bfd_vma value)
 891 {
 892   switch (opindex)
 893     {
 894     case IP2K_OPERAND_ADDR16CJP :
 895       fields->f_addr16cjp = value;
 896       break;
 897     case IP2K_OPERAND_ADDR16H :
 898       fields->f_imm8 = value;
 899       break;
 900     case IP2K_OPERAND_ADDR16L :
 901       fields->f_imm8 = value;
 902       break;
 903     case IP2K_OPERAND_ADDR16P :
 904       fields->f_page3 = value;
 905       break;
 906     case IP2K_OPERAND_BITNO :
 907       fields->f_bitno = value;
 908       break;
 909     case IP2K_OPERAND_CBIT :
 910       break;
 911     case IP2K_OPERAND_DCBIT :
 912       break;
 913     case IP2K_OPERAND_FR :
 914       fields->f_reg = value;
 915       break;
 916     case IP2K_OPERAND_LIT8 :
 917       fields->f_imm8 = value;
 918       break;
 919     case IP2K_OPERAND_PABITS :
 920       break;
 921     case IP2K_OPERAND_RETI3 :
 922       fields->f_reti3 = value;
 923       break;
 924     case IP2K_OPERAND_ZBIT :
 925       break;
 926
 927     default :
 928       /* xgettext:c-format */
 929       opcodes_error_handler
 930         (_("internal error: unrecognized field %d while setting vma operand"),
 931          opindex);
 932       abort ();
 933   }
 934 }
 935
 936 /* Function to call before using the instruction builder tables.  */
 937
 938 void
 939 ip2k_cgen_init_ibld_table (CGEN_CPU_DESC cd)
 940 {
 941   cd->insert_handlers = & ip2k_cgen_insert_handlers[0];
 942   cd->extract_handlers = & ip2k_cgen_extract_handlers[0];
 943
 944   cd->insert_operand = ip2k_cgen_insert_operand;
 945   cd->extract_operand = ip2k_cgen_extract_operand;
 946
 947   cd->get_int_operand = ip2k_cgen_get_int_operand;
 948   cd->set_int_operand = ip2k_cgen_set_int_operand;
 949   cd->get_vma_operand = ip2k_cgen_get_vma_operand;
 950   cd->set_vma_operand = ip2k_cgen_set_vma_operand;
 951 }