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, 2006, 2007,
   7    2008, 2010  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;
 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 \f
 317 /* Operand extraction.  */
 318
 319 #if ! CGEN_INT_INSN_P
 320
 321 /* Subroutine of extract_normal.
 322    Ensure sufficient bytes are cached in EX_INFO.
 323    OFFSET is the offset in bytes from the start of the insn of the value.
 324    BYTES is the length of the needed value.
 325    Returns 1 for success, 0 for failure.  */
 326
 327 static CGEN_INLINE int
 328 fill_cache (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 329             CGEN_EXTRACT_INFO *ex_info,
 330             int offset,
 331             int bytes,
 332             bfd_vma pc)
 333 {
 334   /* It's doubtful that the middle part has already been fetched so
 335      we don't optimize that case.  kiss.  */
 336   unsigned int mask;
 337   disassemble_info *info = (disassemble_info *) ex_info->dis_info;
 338
 339   /* First do a quick check.  */
 340   mask = (1 << bytes) - 1;
 341   if (((ex_info->valid >> offset) & mask) == mask)
 342     return 1;
 343
 344   /* Search for the first byte we need to read.  */
 345   for (mask = 1 << offset; bytes > 0; --bytes, ++offset, mask <<= 1)
 346     if (! (mask & ex_info->valid))
 347       break;
 348
 349   if (bytes)
 350     {
 351       int status;
 352
 353       pc += offset;
 354       status = (*info->read_memory_func)
 355         (pc, ex_info->insn_bytes + offset, bytes, info);
 356
 357       if (status != 0)
 358         {
 359           (*info->memory_error_func) (status, pc, info);
 360           return 0;
 361         }
 362
 363       ex_info->valid |= ((1 << bytes) - 1) << offset;
 364     }
 365
 366   return 1;
 367 }
 368
 369 /* Subroutine of extract_normal.  */
 370
 371 static CGEN_INLINE long
 372 extract_1 (CGEN_CPU_DESC cd,
 373            CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
 374            int start,
 375            int length,
 376            int word_length,
 377            unsigned char *bufp,
 378            bfd_vma pc ATTRIBUTE_UNUSED)
 379 {
 380   unsigned long x;
 381   int shift;
 382
 383   x = cgen_get_insn_value (cd, bufp, word_length);
 384
 385   if (CGEN_INSN_LSB0_P)
 386     shift = (start + 1) - length;
 387   else
 388     shift = (word_length - (start + length));
 389   return x >> shift;
 390 }
 391
 392 #endif /* ! CGEN_INT_INSN_P */
 393
 394 /* Default extraction routine.
 395
 396    INSN_VALUE is the first base_insn_bitsize bits of the insn in host order,
 397    or sometimes less for cases like the m32r where the base insn size is 32
 398    but some insns are 16 bits.
 399    ATTRS is a mask of the boolean attributes.  We only need `SIGNED',
 400    but for generality we take a bitmask of all of them.
 401    WORD_OFFSET is the offset in bits from the start of the insn of the value.
 402    WORD_LENGTH is the length of the word in bits in which the value resides.
 403    START is the starting bit number in the word, architecture origin.
 404    LENGTH is the length of VALUE in bits.
 405    TOTAL_LENGTH is the total length of the insn in bits.
 406
 407    Returns 1 for success, 0 for failure.  */
 408
 409 /* ??? The return code isn't properly used.  wip.  */
 410
 411 /* ??? This doesn't handle bfd_vma's.  Create another function when
 412    necessary.  */
 413
 414 static int
 415 extract_normal (CGEN_CPU_DESC cd,
 416 #if ! CGEN_INT_INSN_P
 417                 CGEN_EXTRACT_INFO *ex_info,
 418 #else
 419                 CGEN_EXTRACT_INFO *ex_info ATTRIBUTE_UNUSED,
 420 #endif
 421                 CGEN_INSN_INT insn_value,
 422                 unsigned int attrs,
 423                 unsigned int word_offset,
 424                 unsigned int start,
 425                 unsigned int length,
 426                 unsigned int word_length,
 427                 unsigned int total_length,
 428 #if ! CGEN_INT_INSN_P
 429                 bfd_vma pc,
 430 #else
 431                 bfd_vma pc ATTRIBUTE_UNUSED,
 432 #endif
 433                 long *valuep)
 434 {
 435   long value, mask;
 436
 437   /* If LENGTH is zero, this operand doesn't contribute to the value
 438      so give it a standard value of zero.  */
 439   if (length == 0)
 440     {
 441       *valuep = 0;
 442       return 1;
 443     }
 444
 445   if (word_length > 8 * sizeof (CGEN_INSN_INT))
 446     abort ();
 447
 448   /* For architectures with insns smaller than the insn-base-bitsize,
 449      word_length may be too big.  */
 450   if (cd->min_insn_bitsize < cd->base_insn_bitsize)
 451     {
 452       if (word_offset + word_length > total_length)
 453         word_length = total_length - word_offset;
 454     }
 455
 456   /* Does the value reside in INSN_VALUE, and at the right alignment?  */
 457
 458   if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length))
 459     {
 460       if (CGEN_INSN_LSB0_P)
 461         value = insn_value >> ((word_offset + start + 1) - length);
 462       else
 463         value = insn_value >> (total_length - ( word_offset + start + length));
 464     }
 465
 466 #if ! CGEN_INT_INSN_P
 467
 468   else
 469     {
 470       unsigned char *bufp = ex_info->insn_bytes + word_offset / 8;
 471
 472       if (word_length > 8 * sizeof (CGEN_INSN_INT))
 473         abort ();
 474
 475       if (fill_cache (cd, ex_info, word_offset / 8, word_length / 8, pc) == 0)
 476         return 0;
 477
 478       value = extract_1 (cd, ex_info, start, length, word_length, bufp, pc);
 479     }
 480
 481 #endif /* ! CGEN_INT_INSN_P */
 482
 483   /* Written this way to avoid undefined behaviour.  */
 484   mask = (((1L << (length - 1)) - 1) << 1) | 1;
 485
 486   value &= mask;
 487   /* sign extend? */
 488   if (CGEN_BOOL_ATTR (attrs, CGEN_IFLD_SIGNED)
 489       && (value & (1L << (length - 1))))
 490     value |= ~mask;
 491
 492   *valuep = value;
 493
 494   return 1;
 495 }
 496
 497 /* Default insn extractor.
 498
 499    INSN_VALUE is the first base_insn_bitsize bits, translated to host order.
 500    The extracted fields are stored in FIELDS.
 501    EX_INFO is used to handle reading variable length insns.
 502    Return the length of the insn in bits, or 0 if no match,
 503    or -1 if an error occurs fetching data (memory_error_func will have
 504    been called).  */
 505
 506 static int
 507 extract_insn_normal (CGEN_CPU_DESC cd,
 508                      const CGEN_INSN *insn,
 509                      CGEN_EXTRACT_INFO *ex_info,
 510                      CGEN_INSN_INT insn_value,
 511                      CGEN_FIELDS *fields,
 512                      bfd_vma pc)
 513 {
 514   const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
 515   const CGEN_SYNTAX_CHAR_TYPE *syn;
 516
 517   CGEN_FIELDS_BITSIZE (fields) = CGEN_INSN_BITSIZE (insn);
 518
 519   CGEN_INIT_EXTRACT (cd);
 520
 521   for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
 522     {
 523       int length;
 524
 525       if (CGEN_SYNTAX_CHAR_P (*syn))
 526         continue;
 527
 528       length = (* cd->extract_operand) (cd, CGEN_SYNTAX_FIELD (*syn),
 529                                         ex_info, insn_value, fields, pc);
 530       if (length <= 0)
 531         return length;
 532     }
 533
 534   /* We recognized and successfully extracted this insn.  */
 535   return CGEN_INSN_BITSIZE (insn);
 536 }
 537 \f
 538 /* Machine generated code added here.  */
 539
 540 const char * ip2k_cgen_insert_operand
 541   (CGEN_CPU_DESC, int, CGEN_FIELDS *, CGEN_INSN_BYTES_PTR, bfd_vma);
 542
 543 /* Main entry point for operand insertion.
 544
 545    This function is basically just a big switch statement.  Earlier versions
 546    used tables to look up the function to use, but
 547    - if the table contains both assembler and disassembler functions then
 548      the disassembler contains much of the assembler and vice-versa,
 549    - there's a lot of inlining possibilities as things grow,
 550    - using a switch statement avoids the function call overhead.
 551
 552    This function could be moved into `parse_insn_normal', but keeping it
 553    separate makes clear the interface between `parse_insn_normal' and each of
 554    the handlers.  It's also needed by GAS to insert operands that couldn't be
 555    resolved during parsing.  */
 556
 557 const char *
 558 ip2k_cgen_insert_operand (CGEN_CPU_DESC cd,
 559                              int opindex,
 560                              CGEN_FIELDS * fields,
 561                              CGEN_INSN_BYTES_PTR buffer,
 562                              bfd_vma pc ATTRIBUTE_UNUSED)
 563 {
 564   const char * errmsg = NULL;
 565   unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
 566
 567   switch (opindex)
 568     {
 569     case IP2K_OPERAND_ADDR16CJP :
 570       errmsg = insert_normal (cd, fields->f_addr16cjp, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, buffer);
 571       break;
 572     case IP2K_OPERAND_ADDR16H :
 573       errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
 574       break;
 575     case IP2K_OPERAND_ADDR16L :
 576       errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
 577       break;
 578     case IP2K_OPERAND_ADDR16P :
 579       errmsg = insert_normal (cd, fields->f_page3, 0, 0, 2, 3, 16, total_length, buffer);
 580       break;
 581     case IP2K_OPERAND_BITNO :
 582       errmsg = insert_normal (cd, fields->f_bitno, 0, 0, 11, 3, 16, total_length, buffer);
 583       break;
 584     case IP2K_OPERAND_CBIT :
 585       break;
 586     case IP2K_OPERAND_DCBIT :
 587       break;
 588     case IP2K_OPERAND_FR :
 589       errmsg = insert_normal (cd, fields->f_reg, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, buffer);
 590       break;
 591     case IP2K_OPERAND_LIT8 :
 592       errmsg = insert_normal (cd, fields->f_imm8, 0, 0, 7, 8, 16, total_length, buffer);
 593       break;
 594     case IP2K_OPERAND_PABITS :
 595       break;
 596     case IP2K_OPERAND_RETI3 :
 597       errmsg = insert_normal (cd, fields->f_reti3, 0, 0, 2, 3, 16, total_length, buffer);
 598       break;
 599     case IP2K_OPERAND_ZBIT :
 600       break;
 601
 602     default :
 603       /* xgettext:c-format */
 604       fprintf (stderr, _("Unrecognized field %d while building insn.\n"),
 605                opindex);
 606       abort ();
 607   }
 608
 609   return errmsg;
 610 }
 611
 612 int ip2k_cgen_extract_operand
 613   (CGEN_CPU_DESC, int, CGEN_EXTRACT_INFO *, CGEN_INSN_INT, CGEN_FIELDS *, bfd_vma);
 614
 615 /* Main entry point for operand extraction.
 616    The result is <= 0 for error, >0 for success.
 617    ??? Actual values aren't well defined right now.
 618
 619    This function is basically just a big switch statement.  Earlier versions
 620    used tables to look up the function to use, but
 621    - if the table contains both assembler and disassembler functions then
 622      the disassembler contains much of the assembler and vice-versa,
 623    - there's a lot of inlining possibilities as things grow,
 624    - using a switch statement avoids the function call overhead.
 625
 626    This function could be moved into `print_insn_normal', but keeping it
 627    separate makes clear the interface between `print_insn_normal' and each of
 628    the handlers.  */
 629
 630 int
 631 ip2k_cgen_extract_operand (CGEN_CPU_DESC cd,
 632                              int opindex,
 633                              CGEN_EXTRACT_INFO *ex_info,
 634                              CGEN_INSN_INT insn_value,
 635                              CGEN_FIELDS * fields,
 636                              bfd_vma pc)
 637 {
 638   /* Assume success (for those operands that are nops).  */
 639   int length = 1;
 640   unsigned int total_length = CGEN_FIELDS_BITSIZE (fields);
 641
 642   switch (opindex)
 643     {
 644     case IP2K_OPERAND_ADDR16CJP :
 645       length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 12, 13, 16, total_length, pc, & fields->f_addr16cjp);
 646       break;
 647     case IP2K_OPERAND_ADDR16H :
 648       length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8);
 649       break;
 650     case IP2K_OPERAND_ADDR16L :
 651       length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8);
 652       break;
 653     case IP2K_OPERAND_ADDR16P :
 654       length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_page3);
 655       break;
 656     case IP2K_OPERAND_BITNO :
 657       length = extract_normal (cd, ex_info, insn_value, 0, 0, 11, 3, 16, total_length, pc, & fields->f_bitno);
 658       break;
 659     case IP2K_OPERAND_CBIT :
 660       break;
 661     case IP2K_OPERAND_DCBIT :
 662       break;
 663     case IP2K_OPERAND_FR :
 664       length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_ABS_ADDR), 0, 8, 9, 16, total_length, pc, & fields->f_reg);
 665       break;
 666     case IP2K_OPERAND_LIT8 :
 667       length = extract_normal (cd, ex_info, insn_value, 0, 0, 7, 8, 16, total_length, pc, & fields->f_imm8);
 668       break;
 669     case IP2K_OPERAND_PABITS :
 670       break;
 671     case IP2K_OPERAND_RETI3 :
 672       length = extract_normal (cd, ex_info, insn_value, 0, 0, 2, 3, 16, total_length, pc, & fields->f_reti3);
 673       break;
 674     case IP2K_OPERAND_ZBIT :
 675       break;
 676
 677     default :
 678       /* xgettext:c-format */
 679       fprintf (stderr, _("Unrecognized field %d while decoding insn.\n"),
 680                opindex);
 681       abort ();
 682     }
 683
 684   return length;
 685 }
 686
 687 cgen_insert_fn * const ip2k_cgen_insert_handlers[] =
 688 {
 689   insert_insn_normal,
 690 };
 691
 692 cgen_extract_fn * const ip2k_cgen_extract_handlers[] =
 693 {
 694   extract_insn_normal,
 695 };
 696
 697 int ip2k_cgen_get_int_operand     (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
 698 bfd_vma ip2k_cgen_get_vma_operand (CGEN_CPU_DESC, int, const CGEN_FIELDS *);
 699
 700 /* Getting values from cgen_fields is handled by a collection of functions.
 701    They are distinguished by the type of the VALUE argument they return.
 702    TODO: floating point, inlining support, remove cases where result type
 703    not appropriate.  */
 704
 705 int
 706 ip2k_cgen_get_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 707                              int opindex,
 708                              const CGEN_FIELDS * fields)
 709 {
 710   int value;
 711
 712   switch (opindex)
 713     {
 714     case IP2K_OPERAND_ADDR16CJP :
 715       value = fields->f_addr16cjp;
 716       break;
 717     case IP2K_OPERAND_ADDR16H :
 718       value = fields->f_imm8;
 719       break;
 720     case IP2K_OPERAND_ADDR16L :
 721       value = fields->f_imm8;
 722       break;
 723     case IP2K_OPERAND_ADDR16P :
 724       value = fields->f_page3;
 725       break;
 726     case IP2K_OPERAND_BITNO :
 727       value = fields->f_bitno;
 728       break;
 729     case IP2K_OPERAND_CBIT :
 730       value = 0;
 731       break;
 732     case IP2K_OPERAND_DCBIT :
 733       value = 0;
 734       break;
 735     case IP2K_OPERAND_FR :
 736       value = fields->f_reg;
 737       break;
 738     case IP2K_OPERAND_LIT8 :
 739       value = fields->f_imm8;
 740       break;
 741     case IP2K_OPERAND_PABITS :
 742       value = 0;
 743       break;
 744     case IP2K_OPERAND_RETI3 :
 745       value = fields->f_reti3;
 746       break;
 747     case IP2K_OPERAND_ZBIT :
 748       value = 0;
 749       break;
 750
 751     default :
 752       /* xgettext:c-format */
 753       fprintf (stderr, _("Unrecognized field %d while getting int operand.\n"),
 754                        opindex);
 755       abort ();
 756   }
 757
 758   return value;
 759 }
 760
 761 bfd_vma
 762 ip2k_cgen_get_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 763                              int opindex,
 764                              const CGEN_FIELDS * fields)
 765 {
 766   bfd_vma value;
 767
 768   switch (opindex)
 769     {
 770     case IP2K_OPERAND_ADDR16CJP :
 771       value = fields->f_addr16cjp;
 772       break;
 773     case IP2K_OPERAND_ADDR16H :
 774       value = fields->f_imm8;
 775       break;
 776     case IP2K_OPERAND_ADDR16L :
 777       value = fields->f_imm8;
 778       break;
 779     case IP2K_OPERAND_ADDR16P :
 780       value = fields->f_page3;
 781       break;
 782     case IP2K_OPERAND_BITNO :
 783       value = fields->f_bitno;
 784       break;
 785     case IP2K_OPERAND_CBIT :
 786       value = 0;
 787       break;
 788     case IP2K_OPERAND_DCBIT :
 789       value = 0;
 790       break;
 791     case IP2K_OPERAND_FR :
 792       value = fields->f_reg;
 793       break;
 794     case IP2K_OPERAND_LIT8 :
 795       value = fields->f_imm8;
 796       break;
 797     case IP2K_OPERAND_PABITS :
 798       value = 0;
 799       break;
 800     case IP2K_OPERAND_RETI3 :
 801       value = fields->f_reti3;
 802       break;
 803     case IP2K_OPERAND_ZBIT :
 804       value = 0;
 805       break;
 806
 807     default :
 808       /* xgettext:c-format */
 809       fprintf (stderr, _("Unrecognized field %d while getting vma operand.\n"),
 810                        opindex);
 811       abort ();
 812   }
 813
 814   return value;
 815 }
 816
 817 void ip2k_cgen_set_int_operand  (CGEN_CPU_DESC, int, CGEN_FIELDS *, int);
 818 void ip2k_cgen_set_vma_operand  (CGEN_CPU_DESC, int, CGEN_FIELDS *, bfd_vma);
 819
 820 /* Stuffing values in cgen_fields is handled by a collection of functions.
 821    They are distinguished by the type of the VALUE argument they accept.
 822    TODO: floating point, inlining support, remove cases where argument type
 823    not appropriate.  */
 824
 825 void
 826 ip2k_cgen_set_int_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 827                              int opindex,
 828                              CGEN_FIELDS * fields,
 829                              int value)
 830 {
 831   switch (opindex)
 832     {
 833     case IP2K_OPERAND_ADDR16CJP :
 834       fields->f_addr16cjp = value;
 835       break;
 836     case IP2K_OPERAND_ADDR16H :
 837       fields->f_imm8 = value;
 838       break;
 839     case IP2K_OPERAND_ADDR16L :
 840       fields->f_imm8 = value;
 841       break;
 842     case IP2K_OPERAND_ADDR16P :
 843       fields->f_page3 = value;
 844       break;
 845     case IP2K_OPERAND_BITNO :
 846       fields->f_bitno = value;
 847       break;
 848     case IP2K_OPERAND_CBIT :
 849       break;
 850     case IP2K_OPERAND_DCBIT :
 851       break;
 852     case IP2K_OPERAND_FR :
 853       fields->f_reg = value;
 854       break;
 855     case IP2K_OPERAND_LIT8 :
 856       fields->f_imm8 = value;
 857       break;
 858     case IP2K_OPERAND_PABITS :
 859       break;
 860     case IP2K_OPERAND_RETI3 :
 861       fields->f_reti3 = value;
 862       break;
 863     case IP2K_OPERAND_ZBIT :
 864       break;
 865
 866     default :
 867       /* xgettext:c-format */
 868       fprintf (stderr, _("Unrecognized field %d while setting int operand.\n"),
 869                        opindex);
 870       abort ();
 871   }
 872 }
 873
 874 void
 875 ip2k_cgen_set_vma_operand (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 876                              int opindex,
 877                              CGEN_FIELDS * fields,
 878                              bfd_vma value)
 879 {
 880   switch (opindex)
 881     {
 882     case IP2K_OPERAND_ADDR16CJP :
 883       fields->f_addr16cjp = value;
 884       break;
 885     case IP2K_OPERAND_ADDR16H :
 886       fields->f_imm8 = value;
 887       break;
 888     case IP2K_OPERAND_ADDR16L :
 889       fields->f_imm8 = value;
 890       break;
 891     case IP2K_OPERAND_ADDR16P :
 892       fields->f_page3 = value;
 893       break;
 894     case IP2K_OPERAND_BITNO :
 895       fields->f_bitno = value;
 896       break;
 897     case IP2K_OPERAND_CBIT :
 898       break;
 899     case IP2K_OPERAND_DCBIT :
 900       break;
 901     case IP2K_OPERAND_FR :
 902       fields->f_reg = value;
 903       break;
 904     case IP2K_OPERAND_LIT8 :
 905       fields->f_imm8 = value;
 906       break;
 907     case IP2K_OPERAND_PABITS :
 908       break;
 909     case IP2K_OPERAND_RETI3 :
 910       fields->f_reti3 = value;
 911       break;
 912     case IP2K_OPERAND_ZBIT :
 913       break;
 914
 915     default :
 916       /* xgettext:c-format */
 917       fprintf (stderr, _("Unrecognized field %d while setting vma operand.\n"),
 918                        opindex);
 919       abort ();
 920   }
 921 }
 922
 923 /* Function to call before using the instruction builder tables.  */
 924
 925 void
 926 ip2k_cgen_init_ibld_table (CGEN_CPU_DESC cd)
 927 {
 928   cd->insert_handlers = & ip2k_cgen_insert_handlers[0];
 929   cd->extract_handlers = & ip2k_cgen_extract_handlers[0];
 930
 931   cd->insert_operand = ip2k_cgen_insert_operand;
 932   cd->extract_operand = ip2k_cgen_extract_operand;
 933
 934   cd->get_int_operand = ip2k_cgen_get_int_operand;
 935   cd->set_int_operand = ip2k_cgen_set_int_operand;
 936   cd->get_vma_operand = ip2k_cgen_get_vma_operand;
 937   cd->set_vma_operand = ip2k_cgen_set_vma_operand;
 938 }