toolchain/binutils/opcodes/frv-dis.c

   1 /* Disassembler interface for targets using CGEN. -*- C -*-
   2    CGEN: Cpu tools GENerator
   3
   4 THIS FILE IS MACHINE GENERATED WITH CGEN.
   5 - the resultant file is machine generated, cgen-dis.in isn't
   6
   7 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002
   8 Free Software Foundation, Inc.
   9
  10 This file is part of the GNU Binutils and GDB, the GNU debugger.
  11
  12 This program is free software; you can redistribute it and/or modify
  13 it under the terms of the GNU General Public License as published by
  14 the Free Software Foundation; either version 2, or (at your option)
  15 any later version.
  16
  17 This program is distributed in the hope that it will be useful,
  18 but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 GNU General Public License for more details.
  21
  22 You should have received a copy of the GNU General Public License
  23 along with this program; if not, write to the Free Software Foundation, Inc.,
  24 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  25
  26 /* ??? Eventually more and more of this stuff can go to cpu-independent files.
  27    Keep that in mind.  */
  28
  29 #include "sysdep.h"
  30 #include <stdio.h>
  31 #include "ansidecl.h"
  32 #include "dis-asm.h"
  33 #include "bfd.h"
  34 #include "symcat.h"
  35 #include "libiberty.h"
  36 #include "frv-desc.h"
  37 #include "frv-opc.h"
  38 #include "opintl.h"
  39
  40 /* Default text to print if an instruction isn't recognized.  */
  41 #define UNKNOWN_INSN_MSG _("*unknown*")
  42
  43 static void print_normal
  44   (CGEN_CPU_DESC, void *, long, unsigned int, bfd_vma, int);
  45 static void print_address
  46   (CGEN_CPU_DESC, void *, bfd_vma, unsigned int, bfd_vma, int);
  47 static void print_keyword
  48   (CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int);
  49 static void print_insn_normal
  50   (CGEN_CPU_DESC, void *, const CGEN_INSN *, CGEN_FIELDS *, bfd_vma, int);
  51 static int print_insn
  52   (CGEN_CPU_DESC, bfd_vma,  disassemble_info *, char *, unsigned);
  53 static int default_print_insn
  54   (CGEN_CPU_DESC, bfd_vma, disassemble_info *);
  55 static int read_insn
  56   (CGEN_CPU_DESC, bfd_vma, disassemble_info *, char *, int, CGEN_EXTRACT_INFO *,
  57    unsigned long *);
  58 \f
  59 /* -- disassembler routines inserted here */
  60
  61 /* -- dis.c */
  62 static void print_spr
  63   PARAMS ((CGEN_CPU_DESC, PTR, CGEN_KEYWORD *, long, unsigned));
  64 static void print_hi
  65   PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int));
  66 static void print_lo
  67   PARAMS ((CGEN_CPU_DESC, PTR, long, unsigned, bfd_vma, int));
  68
  69 static void
  70 print_spr (cd, dis_info, names, regno, attrs)
  71      CGEN_CPU_DESC cd;
  72      PTR dis_info;
  73      CGEN_KEYWORD *names;
  74      long regno;
  75      unsigned int attrs;
  76 {
  77   /* Use the register index format for any unnamed registers.  */
  78   if (cgen_keyword_lookup_value (names, regno) == NULL)
  79     {
  80       disassemble_info *info = (disassemble_info *) dis_info;
  81       (*info->fprintf_func) (info->stream, "spr[%ld]", regno);
  82     }
  83   else
  84     print_keyword (cd, dis_info, names, regno, attrs);
  85 }
  86
  87 static void
  88 print_hi (cd, dis_info, value, attrs, pc, length)
  89      CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
  90      PTR dis_info;
  91      long value;
  92      unsigned int attrs ATTRIBUTE_UNUSED;
  93      bfd_vma pc ATTRIBUTE_UNUSED;
  94      int length ATTRIBUTE_UNUSED;
  95 {
  96   disassemble_info *info = (disassemble_info *) dis_info;
  97   if (value)
  98     (*info->fprintf_func) (info->stream, "0x%lx", value);
  99   else
 100     (*info->fprintf_func) (info->stream, "hi(0x%lx)", value);
 101 }
 102
 103 static void
 104 print_lo (cd, dis_info, value, attrs, pc, length)
 105      CGEN_CPU_DESC cd ATTRIBUTE_UNUSED;
 106      PTR dis_info;
 107      long value;
 108      unsigned int attrs ATTRIBUTE_UNUSED;
 109      bfd_vma pc ATTRIBUTE_UNUSED;
 110      int length ATTRIBUTE_UNUSED;
 111 {
 112   disassemble_info *info = (disassemble_info *) dis_info;
 113   if (value)
 114     (*info->fprintf_func) (info->stream, "0x%lx", value);
 115   else
 116     (*info->fprintf_func) (info->stream, "lo(0x%lx)", value);
 117 }
 118
 119 /* -- */
 120
 121 void frv_cgen_print_operand
 122   PARAMS ((CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *,
 123            void const *, bfd_vma, int));
 124
 125 /* Main entry point for printing operands.
 126    XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
 127    of dis-asm.h on cgen.h.
 128
 129    This function is basically just a big switch statement.  Earlier versions
 130    used tables to look up the function to use, but
 131    - if the table contains both assembler and disassembler functions then
 132      the disassembler contains much of the assembler and vice-versa,
 133    - there's a lot of inlining possibilities as things grow,
 134    - using a switch statement avoids the function call overhead.
 135
 136    This function could be moved into `print_insn_normal', but keeping it
 137    separate makes clear the interface between `print_insn_normal' and each of
 138    the handlers.  */
 139
 140 void
 141 frv_cgen_print_operand (cd, opindex, xinfo, fields, attrs, pc, length)
 142      CGEN_CPU_DESC cd;
 143      int opindex;
 144      PTR xinfo;
 145      CGEN_FIELDS *fields;
 146      void const *attrs ATTRIBUTE_UNUSED;
 147      bfd_vma pc;
 148      int length;
 149 {
 150  disassemble_info *info = (disassemble_info *) xinfo;
 151
 152   switch (opindex)
 153     {
 154     case FRV_OPERAND_A0 :
 155       print_normal (cd, info, fields->f_A, 0, pc, length);
 156       break;
 157     case FRV_OPERAND_A1 :
 158       print_normal (cd, info, fields->f_A, 0, pc, length);
 159       break;
 160     case FRV_OPERAND_ACC40SI :
 161       print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Si, 0);
 162       break;
 163     case FRV_OPERAND_ACC40SK :
 164       print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Sk, 0);
 165       break;
 166     case FRV_OPERAND_ACC40UI :
 167       print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Ui, 0);
 168       break;
 169     case FRV_OPERAND_ACC40UK :
 170       print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Uk, 0);
 171       break;
 172     case FRV_OPERAND_ACCGI :
 173       print_keyword (cd, info, & frv_cgen_opval_accg_names, fields->f_ACCGi, 0);
 174       break;
 175     case FRV_OPERAND_ACCGK :
 176       print_keyword (cd, info, & frv_cgen_opval_accg_names, fields->f_ACCGk, 0);
 177       break;
 178     case FRV_OPERAND_CCI :
 179       print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CCi, 0);
 180       break;
 181     case FRV_OPERAND_CPRDOUBLEK :
 182       print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRk, 0);
 183       break;
 184     case FRV_OPERAND_CPRI :
 185       print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRi, 0);
 186       break;
 187     case FRV_OPERAND_CPRJ :
 188       print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRj, 0);
 189       break;
 190     case FRV_OPERAND_CPRK :
 191       print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRk, 0);
 192       break;
 193     case FRV_OPERAND_CRI :
 194       print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRi, 0);
 195       break;
 196     case FRV_OPERAND_CRJ :
 197       print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRj, 0);
 198       break;
 199     case FRV_OPERAND_CRJ_FLOAT :
 200       print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRj_float, 0);
 201       break;
 202     case FRV_OPERAND_CRJ_INT :
 203       print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRj_int, 0);
 204       break;
 205     case FRV_OPERAND_CRK :
 206       print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRk, 0);
 207       break;
 208     case FRV_OPERAND_FCCI_1 :
 209       print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCi_1, 0);
 210       break;
 211     case FRV_OPERAND_FCCI_2 :
 212       print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCi_2, 0);
 213       break;
 214     case FRV_OPERAND_FCCI_3 :
 215       print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCi_3, 0);
 216       break;
 217     case FRV_OPERAND_FCCK :
 218       print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCk, 0);
 219       break;
 220     case FRV_OPERAND_FRDOUBLEI :
 221       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0);
 222       break;
 223     case FRV_OPERAND_FRDOUBLEJ :
 224       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0);
 225       break;
 226     case FRV_OPERAND_FRDOUBLEK :
 227       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
 228       break;
 229     case FRV_OPERAND_FRI :
 230       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0);
 231       break;
 232     case FRV_OPERAND_FRINTI :
 233       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0);
 234       break;
 235     case FRV_OPERAND_FRINTIEVEN :
 236       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0);
 237       break;
 238     case FRV_OPERAND_FRINTJ :
 239       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0);
 240       break;
 241     case FRV_OPERAND_FRINTJEVEN :
 242       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0);
 243       break;
 244     case FRV_OPERAND_FRINTK :
 245       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
 246       break;
 247     case FRV_OPERAND_FRINTKEVEN :
 248       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
 249       break;
 250     case FRV_OPERAND_FRJ :
 251       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0);
 252       break;
 253     case FRV_OPERAND_FRK :
 254       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
 255       break;
 256     case FRV_OPERAND_FRKHI :
 257       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
 258       break;
 259     case FRV_OPERAND_FRKLO :
 260       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
 261       break;
 262     case FRV_OPERAND_GRDOUBLEK :
 263       print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0);
 264       break;
 265     case FRV_OPERAND_GRI :
 266       print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRi, 0);
 267       break;
 268     case FRV_OPERAND_GRJ :
 269       print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRj, 0);
 270       break;
 271     case FRV_OPERAND_GRK :
 272       print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0);
 273       break;
 274     case FRV_OPERAND_GRKHI :
 275       print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0);
 276       break;
 277     case FRV_OPERAND_GRKLO :
 278       print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0);
 279       break;
 280     case FRV_OPERAND_ICCI_1 :
 281       print_keyword (cd, info, & frv_cgen_opval_iccr_names, fields->f_ICCi_1, 0);
 282       break;
 283     case FRV_OPERAND_ICCI_2 :
 284       print_keyword (cd, info, & frv_cgen_opval_iccr_names, fields->f_ICCi_2, 0);
 285       break;
 286     case FRV_OPERAND_ICCI_3 :
 287       print_keyword (cd, info, & frv_cgen_opval_iccr_names, fields->f_ICCi_3, 0);
 288       break;
 289     case FRV_OPERAND_LI :
 290       print_normal (cd, info, fields->f_LI, 0, pc, length);
 291       break;
 292     case FRV_OPERAND_AE :
 293       print_normal (cd, info, fields->f_ae, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 294       break;
 295     case FRV_OPERAND_CCOND :
 296       print_normal (cd, info, fields->f_ccond, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 297       break;
 298     case FRV_OPERAND_COND :
 299       print_normal (cd, info, fields->f_cond, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 300       break;
 301     case FRV_OPERAND_D12 :
 302       print_normal (cd, info, fields->f_d12, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
 303       break;
 304     case FRV_OPERAND_DEBUG :
 305       print_normal (cd, info, fields->f_debug, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 306       break;
 307     case FRV_OPERAND_EIR :
 308       print_normal (cd, info, fields->f_eir, 0, pc, length);
 309       break;
 310     case FRV_OPERAND_HINT :
 311       print_normal (cd, info, fields->f_hint, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 312       break;
 313     case FRV_OPERAND_HINT_NOT_TAKEN :
 314       print_keyword (cd, info, & frv_cgen_opval_h_hint_not_taken, fields->f_hint, 0);
 315       break;
 316     case FRV_OPERAND_HINT_TAKEN :
 317       print_keyword (cd, info, & frv_cgen_opval_h_hint_taken, fields->f_hint, 0);
 318       break;
 319     case FRV_OPERAND_LABEL16 :
 320       print_address (cd, info, fields->f_label16, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
 321       break;
 322     case FRV_OPERAND_LABEL24 :
 323       print_address (cd, info, fields->f_label24, 0|(1<<CGEN_OPERAND_PCREL_ADDR)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
 324       break;
 325     case FRV_OPERAND_LOCK :
 326       print_normal (cd, info, fields->f_lock, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 327       break;
 328     case FRV_OPERAND_PACK :
 329       print_keyword (cd, info, & frv_cgen_opval_h_pack, fields->f_pack, 0);
 330       break;
 331     case FRV_OPERAND_S10 :
 332       print_normal (cd, info, fields->f_s10, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 333       break;
 334     case FRV_OPERAND_S12 :
 335       print_normal (cd, info, fields->f_d12, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 336       break;
 337     case FRV_OPERAND_S16 :
 338       print_normal (cd, info, fields->f_s16, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 339       break;
 340     case FRV_OPERAND_S5 :
 341       print_normal (cd, info, fields->f_s5, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 342       break;
 343     case FRV_OPERAND_S6 :
 344       print_normal (cd, info, fields->f_s6, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 345       break;
 346     case FRV_OPERAND_S6_1 :
 347       print_normal (cd, info, fields->f_s6_1, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 348       break;
 349     case FRV_OPERAND_SLO16 :
 350       print_lo (cd, info, fields->f_s16, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
 351       break;
 352     case FRV_OPERAND_SPR :
 353       print_spr (cd, info, & frv_cgen_opval_spr_names, fields->f_spr, 0|(1<<CGEN_OPERAND_VIRTUAL));
 354       break;
 355     case FRV_OPERAND_U12 :
 356       print_normal (cd, info, fields->f_u12, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
 357       break;
 358     case FRV_OPERAND_U16 :
 359       print_normal (cd, info, fields->f_u16, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 360       break;
 361     case FRV_OPERAND_U6 :
 362       print_normal (cd, info, fields->f_u6, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 363       break;
 364     case FRV_OPERAND_UHI16 :
 365       print_hi (cd, info, fields->f_u16, 0, pc, length);
 366       break;
 367     case FRV_OPERAND_ULO16 :
 368       print_lo (cd, info, fields->f_u16, 0, pc, length);
 369       break;
 370
 371     default :
 372       /* xgettext:c-format */
 373       fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
 374                opindex);
 375     abort ();
 376   }
 377 }
 378
 379 cgen_print_fn * const frv_cgen_print_handlers[] =
 380 {
 381   print_insn_normal,
 382 };
 383
 384
 385 void
 386 frv_cgen_init_dis (cd)
 387      CGEN_CPU_DESC cd;
 388 {
 389   frv_cgen_init_opcode_table (cd);
 390   frv_cgen_init_ibld_table (cd);
 391   cd->print_handlers = & frv_cgen_print_handlers[0];
 392   cd->print_operand = frv_cgen_print_operand;
 393 }
 394
 395 \f
 396 /* Default print handler.  */
 397
 398 static void
 399 print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 400               void *dis_info,
 401               long value,
 402               unsigned int attrs,
 403               bfd_vma pc ATTRIBUTE_UNUSED,
 404               int length ATTRIBUTE_UNUSED)
 405 {
 406   disassemble_info *info = (disassemble_info *) dis_info;
 407
 408 #ifdef CGEN_PRINT_NORMAL
 409   CGEN_PRINT_NORMAL (cd, info, value, attrs, pc, length);
 410 #endif
 411
 412   /* Print the operand as directed by the attributes.  */
 413   if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
 414     ; /* nothing to do */
 415   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
 416     (*info->fprintf_func) (info->stream, "%ld", value);
 417   else
 418     (*info->fprintf_func) (info->stream, "0x%lx", value);
 419 }
 420
 421 /* Default address handler.  */
 422
 423 static void
 424 print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 425                void *dis_info,
 426                bfd_vma value,
 427                unsigned int attrs,
 428                bfd_vma pc ATTRIBUTE_UNUSED,
 429                int length ATTRIBUTE_UNUSED)
 430 {
 431   disassemble_info *info = (disassemble_info *) dis_info;
 432
 433 #ifdef CGEN_PRINT_ADDRESS
 434   CGEN_PRINT_ADDRESS (cd, info, value, attrs, pc, length);
 435 #endif
 436
 437   /* Print the operand as directed by the attributes.  */
 438   if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
 439     ; /* nothing to do */
 440   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
 441     (*info->print_address_func) (value, info);
 442   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
 443     (*info->print_address_func) (value, info);
 444   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
 445     (*info->fprintf_func) (info->stream, "%ld", (long) value);
 446   else
 447     (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
 448 }
 449
 450 /* Keyword print handler.  */
 451
 452 static void
 453 print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 454                void *dis_info,
 455                CGEN_KEYWORD *keyword_table,
 456                long value,
 457                unsigned int attrs ATTRIBUTE_UNUSED)
 458 {
 459   disassemble_info *info = (disassemble_info *) dis_info;
 460   const CGEN_KEYWORD_ENTRY *ke;
 461
 462   ke = cgen_keyword_lookup_value (keyword_table, value);
 463   if (ke != NULL)
 464     (*info->fprintf_func) (info->stream, "%s", ke->name);
 465   else
 466     (*info->fprintf_func) (info->stream, "???");
 467 }
 468 \f
 469 /* Default insn printer.
 470
 471    DIS_INFO is defined as `void *' so the disassembler needn't know anything
 472    about disassemble_info.  */
 473
 474 static void
 475 print_insn_normal (CGEN_CPU_DESC cd,
 476                    void *dis_info,
 477                    const CGEN_INSN *insn,
 478                    CGEN_FIELDS *fields,
 479                    bfd_vma pc,
 480                    int length)
 481 {
 482   const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
 483   disassemble_info *info = (disassemble_info *) dis_info;
 484   const CGEN_SYNTAX_CHAR_TYPE *syn;
 485
 486   CGEN_INIT_PRINT (cd);
 487
 488   for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
 489     {
 490       if (CGEN_SYNTAX_MNEMONIC_P (*syn))
 491         {
 492           (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
 493           continue;
 494         }
 495       if (CGEN_SYNTAX_CHAR_P (*syn))
 496         {
 497           (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
 498           continue;
 499         }
 500
 501       /* We have an operand.  */
 502       frv_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
 503                                  fields, CGEN_INSN_ATTRS (insn), pc, length);
 504     }
 505 }
 506 \f
 507 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
 508    the extract info.
 509    Returns 0 if all is well, non-zero otherwise.  */
 510
 511 static int
 512 read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 513            bfd_vma pc,
 514            disassemble_info *info,
 515            char *buf,
 516            int buflen,
 517            CGEN_EXTRACT_INFO *ex_info,
 518            unsigned long *insn_value)
 519 {
 520   int status = (*info->read_memory_func) (pc, buf, buflen, info);
 521   if (status != 0)
 522     {
 523       (*info->memory_error_func) (status, pc, info);
 524       return -1;
 525     }
 526
 527   ex_info->dis_info = info;
 528   ex_info->valid = (1 << buflen) - 1;
 529   ex_info->insn_bytes = buf;
 530
 531   *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
 532   return 0;
 533 }
 534
 535 /* Utility to print an insn.
 536    BUF is the base part of the insn, target byte order, BUFLEN bytes long.
 537    The result is the size of the insn in bytes or zero for an unknown insn
 538    or -1 if an error occurs fetching data (memory_error_func will have
 539    been called).  */
 540
 541 static int
 542 print_insn (CGEN_CPU_DESC cd,
 543             bfd_vma pc,
 544             disassemble_info *info,
 545             char *buf,
 546             unsigned int buflen)
 547 {
 548   CGEN_INSN_INT insn_value;
 549   const CGEN_INSN_LIST *insn_list;
 550   CGEN_EXTRACT_INFO ex_info;
 551   int basesize;
 552
 553   /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
 554   basesize = cd->base_insn_bitsize < buflen * 8 ?
 555                                      cd->base_insn_bitsize : buflen * 8;
 556   insn_value = cgen_get_insn_value (cd, buf, basesize);
 557
 558
 559   /* Fill in ex_info fields like read_insn would.  Don't actually call
 560      read_insn, since the incoming buffer is already read (and possibly
 561      modified a la m32r).  */
 562   ex_info.valid = (1 << buflen) - 1;
 563   ex_info.dis_info = info;
 564   ex_info.insn_bytes = buf;
 565
 566   /* The instructions are stored in hash lists.
 567      Pick the first one and keep trying until we find the right one.  */
 568
 569   insn_list = CGEN_DIS_LOOKUP_INSN (cd, buf, insn_value);
 570   while (insn_list != NULL)
 571     {
 572       const CGEN_INSN *insn = insn_list->insn;
 573       CGEN_FIELDS fields;
 574       int length;
 575       unsigned long insn_value_cropped;
 576
 577 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
 578       /* Not needed as insn shouldn't be in hash lists if not supported.  */
 579       /* Supported by this cpu?  */
 580       if (! frv_cgen_insn_supported (cd, insn))
 581         {
 582           insn_list = CGEN_DIS_NEXT_INSN (insn_list);
 583           continue;
 584         }
 585 #endif
 586
 587       /* Basic bit mask must be correct.  */
 588       /* ??? May wish to allow target to defer this check until the extract
 589          handler.  */
 590
 591       /* Base size may exceed this instruction's size.  Extract the
 592          relevant part from the buffer. */
 593       if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
 594           (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
 595         insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
 596                                            info->endian == BFD_ENDIAN_BIG);
 597       else
 598         insn_value_cropped = insn_value;
 599
 600       if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
 601           == CGEN_INSN_BASE_VALUE (insn))
 602         {
 603           /* Printing is handled in two passes.  The first pass parses the
 604              machine insn and extracts the fields.  The second pass prints
 605              them.  */
 606
 607           /* Make sure the entire insn is loaded into insn_value, if it
 608              can fit.  */
 609           if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
 610               (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
 611             {
 612               unsigned long full_insn_value;
 613               int rc = read_insn (cd, pc, info, buf,
 614                                   CGEN_INSN_BITSIZE (insn) / 8,
 615                                   & ex_info, & full_insn_value);
 616               if (rc != 0)
 617                 return rc;
 618               length = CGEN_EXTRACT_FN (cd, insn)
 619                 (cd, insn, &ex_info, full_insn_value, &fields, pc);
 620             }
 621           else
 622             length = CGEN_EXTRACT_FN (cd, insn)
 623               (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
 624
 625           /* length < 0 -> error */
 626           if (length < 0)
 627             return length;
 628           if (length > 0)
 629             {
 630               CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
 631               /* length is in bits, result is in bytes */
 632               return length / 8;
 633             }
 634         }
 635
 636       insn_list = CGEN_DIS_NEXT_INSN (insn_list);
 637     }
 638
 639   return 0;
 640 }
 641
 642 /* Default value for CGEN_PRINT_INSN.
 643    The result is the size of the insn in bytes or zero for an unknown insn
 644    or -1 if an error occured fetching bytes.  */
 645
 646 #ifndef CGEN_PRINT_INSN
 647 #define CGEN_PRINT_INSN default_print_insn
 648 #endif
 649
 650 static int
 651 default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
 652 {
 653   char buf[CGEN_MAX_INSN_SIZE];
 654   int buflen;
 655   int status;
 656
 657   /* Attempt to read the base part of the insn.  */
 658   buflen = cd->base_insn_bitsize / 8;
 659   status = (*info->read_memory_func) (pc, buf, buflen, info);
 660
 661   /* Try again with the minimum part, if min < base.  */
 662   if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
 663     {
 664       buflen = cd->min_insn_bitsize / 8;
 665       status = (*info->read_memory_func) (pc, buf, buflen, info);
 666     }
 667
 668   if (status != 0)
 669     {
 670       (*info->memory_error_func) (status, pc, info);
 671       return -1;
 672     }
 673
 674   return print_insn (cd, pc, info, buf, buflen);
 675 }
 676
 677 /* Main entry point.
 678    Print one instruction from PC on INFO->STREAM.
 679    Return the size of the instruction (in bytes).  */
 680
 681 typedef struct cpu_desc_list {
 682   struct cpu_desc_list *next;
 683   int isa;
 684   int mach;
 685   int endian;
 686   CGEN_CPU_DESC cd;
 687 } cpu_desc_list;
 688
 689 int
 690 print_insn_frv (bfd_vma pc, disassemble_info *info)
 691 {
 692   static cpu_desc_list *cd_list = 0;
 693   cpu_desc_list *cl = 0;
 694   static CGEN_CPU_DESC cd = 0;
 695   static int prev_isa;
 696   static int prev_mach;
 697   static int prev_endian;
 698   int length;
 699   int isa,mach;
 700   int endian = (info->endian == BFD_ENDIAN_BIG
 701                 ? CGEN_ENDIAN_BIG
 702                 : CGEN_ENDIAN_LITTLE);
 703   enum bfd_architecture arch;
 704
 705   /* ??? gdb will set mach but leave the architecture as "unknown" */
 706 #ifndef CGEN_BFD_ARCH
 707 #define CGEN_BFD_ARCH bfd_arch_frv
 708 #endif
 709   arch = info->arch;
 710   if (arch == bfd_arch_unknown)
 711     arch = CGEN_BFD_ARCH;
 712
 713   /* There's no standard way to compute the machine or isa number
 714      so we leave it to the target.  */
 715 #ifdef CGEN_COMPUTE_MACH
 716   mach = CGEN_COMPUTE_MACH (info);
 717 #else
 718   mach = info->mach;
 719 #endif
 720
 721 #ifdef CGEN_COMPUTE_ISA
 722   isa = CGEN_COMPUTE_ISA (info);
 723 #else
 724   isa = info->insn_sets;
 725 #endif
 726
 727   /* If we've switched cpu's, try to find a handle we've used before */
 728   if (cd
 729       && (isa != prev_isa
 730           || mach != prev_mach
 731           || endian != prev_endian))
 732     {
 733       cd = 0;
 734       for (cl = cd_list; cl; cl = cl->next)
 735         {
 736           if (cl->isa == isa &&
 737               cl->mach == mach &&
 738               cl->endian == endian)
 739             {
 740               cd = cl->cd;
 741               break;
 742             }
 743         }
 744     }
 745
 746   /* If we haven't initialized yet, initialize the opcode table.  */
 747   if (! cd)
 748     {
 749       const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
 750       const char *mach_name;
 751
 752       if (!arch_type)
 753         abort ();
 754       mach_name = arch_type->printable_name;
 755
 756       prev_isa = isa;
 757       prev_mach = mach;
 758       prev_endian = endian;
 759       cd = frv_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
 760                                  CGEN_CPU_OPEN_BFDMACH, mach_name,
 761                                  CGEN_CPU_OPEN_ENDIAN, prev_endian,
 762                                  CGEN_CPU_OPEN_END);
 763       if (!cd)
 764         abort ();
 765
 766       /* save this away for future reference */
 767       cl = xmalloc (sizeof (struct cpu_desc_list));
 768       cl->cd = cd;
 769       cl->isa = isa;
 770       cl->mach = mach;
 771       cl->endian = endian;
 772       cl->next = cd_list;
 773       cd_list = cl;
 774
 775       frv_cgen_init_dis (cd);
 776     }
 777
 778   /* We try to have as much common code as possible.
 779      But at this point some targets need to take over.  */
 780   /* ??? Some targets may need a hook elsewhere.  Try to avoid this,
 781      but if not possible try to move this hook elsewhere rather than
 782      have two hooks.  */
 783   length = CGEN_PRINT_INSN (cd, pc, info);
 784   if (length > 0)
 785     return length;
 786   if (length < 0)
 787     return -1;
 788
 789   (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
 790   return cd->default_insn_bitsize / 8;
 791 }