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, 2005
   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    51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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) ATTRIBUTE_UNUSED;
  47 static void print_keyword
  48   (CGEN_CPU_DESC, void *, CGEN_KEYWORD *, long, unsigned int) ATTRIBUTE_UNUSED;
  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 *, bfd_byte *, unsigned);
  53 static int default_print_insn
  54   (CGEN_CPU_DESC, bfd_vma, disassemble_info *) ATTRIBUTE_UNUSED;
  55 static int read_insn
  56   (CGEN_CPU_DESC, bfd_vma, disassemble_info *, bfd_byte *, int, CGEN_EXTRACT_INFO *,
  57    unsigned long *);
  58 \f
  59 /* -- disassembler routines inserted here.  */
  60
  61 /* -- dis.c */
  62 static void
  63 print_at (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
  64           void * dis_info,
  65           long reloc_ann ATTRIBUTE_UNUSED,
  66           long value ATTRIBUTE_UNUSED,
  67           bfd_vma pc ATTRIBUTE_UNUSED,
  68           int length ATTRIBUTE_UNUSED)
  69 {
  70   disassemble_info *info = (disassemble_info *) dis_info;
  71
  72   (*info->fprintf_func) (info->stream, "@");
  73 }
  74
  75 static void
  76 print_spr (CGEN_CPU_DESC cd,
  77            void * dis_info,
  78            CGEN_KEYWORD *names,
  79            long regno,
  80            unsigned int attrs)
  81 {
  82   /* Use the register index format for any unnamed registers.  */
  83   if (cgen_keyword_lookup_value (names, regno) == NULL)
  84     {
  85       disassemble_info *info = (disassemble_info *) dis_info;
  86       (*info->fprintf_func) (info->stream, "spr[%ld]", regno);
  87     }
  88   else
  89     print_keyword (cd, dis_info, names, regno, attrs);
  90 }
  91
  92 static void
  93 print_hi (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
  94           void * dis_info,
  95           long value,
  96           unsigned int attrs ATTRIBUTE_UNUSED,
  97           bfd_vma pc ATTRIBUTE_UNUSED,
  98           int length ATTRIBUTE_UNUSED)
  99 {
 100   disassemble_info *info = (disassemble_info *) dis_info;
 101
 102   (*info->fprintf_func) (info->stream, value ? "0x%lx" : "hi(0x%lx)", value);
 103 }
 104
 105 static void
 106 print_lo (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 107           void * dis_info,
 108           long value,
 109           unsigned int attrs ATTRIBUTE_UNUSED,
 110           bfd_vma pc ATTRIBUTE_UNUSED,
 111           int length ATTRIBUTE_UNUSED)
 112 {
 113   disassemble_info *info = (disassemble_info *) dis_info;
 114   if (value)
 115     (*info->fprintf_func) (info->stream, "0x%lx", value);
 116   else
 117     (*info->fprintf_func) (info->stream, "lo(0x%lx)", value);
 118 }
 119
 120 /* -- */
 121
 122 void frv_cgen_print_operand
 123   (CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, 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 (CGEN_CPU_DESC cd,
 142                            int opindex,
 143                            void * xinfo,
 144                            CGEN_FIELDS *fields,
 145                            void const *attrs ATTRIBUTE_UNUSED,
 146                            bfd_vma pc,
 147                            int length)
 148 {
 149   disassemble_info *info = (disassemble_info *) xinfo;
 150
 151   switch (opindex)
 152     {
 153     case FRV_OPERAND_A0 :
 154       print_normal (cd, info, fields->f_A, 0, pc, length);
 155       break;
 156     case FRV_OPERAND_A1 :
 157       print_normal (cd, info, fields->f_A, 0, pc, length);
 158       break;
 159     case FRV_OPERAND_ACC40SI :
 160       print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Si, 0);
 161       break;
 162     case FRV_OPERAND_ACC40SK :
 163       print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Sk, 0);
 164       break;
 165     case FRV_OPERAND_ACC40UI :
 166       print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Ui, 0);
 167       break;
 168     case FRV_OPERAND_ACC40UK :
 169       print_keyword (cd, info, & frv_cgen_opval_acc_names, fields->f_ACC40Uk, 0);
 170       break;
 171     case FRV_OPERAND_ACCGI :
 172       print_keyword (cd, info, & frv_cgen_opval_accg_names, fields->f_ACCGi, 0);
 173       break;
 174     case FRV_OPERAND_ACCGK :
 175       print_keyword (cd, info, & frv_cgen_opval_accg_names, fields->f_ACCGk, 0);
 176       break;
 177     case FRV_OPERAND_CCI :
 178       print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CCi, 0);
 179       break;
 180     case FRV_OPERAND_CPRDOUBLEK :
 181       print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRk, 0);
 182       break;
 183     case FRV_OPERAND_CPRI :
 184       print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRi, 0);
 185       break;
 186     case FRV_OPERAND_CPRJ :
 187       print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRj, 0);
 188       break;
 189     case FRV_OPERAND_CPRK :
 190       print_keyword (cd, info, & frv_cgen_opval_cpr_names, fields->f_CPRk, 0);
 191       break;
 192     case FRV_OPERAND_CRI :
 193       print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRi, 0);
 194       break;
 195     case FRV_OPERAND_CRJ :
 196       print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRj, 0);
 197       break;
 198     case FRV_OPERAND_CRJ_FLOAT :
 199       print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRj_float, 0);
 200       break;
 201     case FRV_OPERAND_CRJ_INT :
 202       print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRj_int, 0);
 203       break;
 204     case FRV_OPERAND_CRK :
 205       print_keyword (cd, info, & frv_cgen_opval_cccr_names, fields->f_CRk, 0);
 206       break;
 207     case FRV_OPERAND_FCCI_1 :
 208       print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCi_1, 0);
 209       break;
 210     case FRV_OPERAND_FCCI_2 :
 211       print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCi_2, 0);
 212       break;
 213     case FRV_OPERAND_FCCI_3 :
 214       print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCi_3, 0);
 215       break;
 216     case FRV_OPERAND_FCCK :
 217       print_keyword (cd, info, & frv_cgen_opval_fccr_names, fields->f_FCCk, 0);
 218       break;
 219     case FRV_OPERAND_FRDOUBLEI :
 220       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0);
 221       break;
 222     case FRV_OPERAND_FRDOUBLEJ :
 223       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0);
 224       break;
 225     case FRV_OPERAND_FRDOUBLEK :
 226       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
 227       break;
 228     case FRV_OPERAND_FRI :
 229       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0);
 230       break;
 231     case FRV_OPERAND_FRINTI :
 232       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0);
 233       break;
 234     case FRV_OPERAND_FRINTIEVEN :
 235       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRi, 0);
 236       break;
 237     case FRV_OPERAND_FRINTJ :
 238       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0);
 239       break;
 240     case FRV_OPERAND_FRINTJEVEN :
 241       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0);
 242       break;
 243     case FRV_OPERAND_FRINTK :
 244       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
 245       break;
 246     case FRV_OPERAND_FRINTKEVEN :
 247       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
 248       break;
 249     case FRV_OPERAND_FRJ :
 250       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRj, 0);
 251       break;
 252     case FRV_OPERAND_FRK :
 253       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
 254       break;
 255     case FRV_OPERAND_FRKHI :
 256       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
 257       break;
 258     case FRV_OPERAND_FRKLO :
 259       print_keyword (cd, info, & frv_cgen_opval_fr_names, fields->f_FRk, 0);
 260       break;
 261     case FRV_OPERAND_GRDOUBLEK :
 262       print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0);
 263       break;
 264     case FRV_OPERAND_GRI :
 265       print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRi, 0);
 266       break;
 267     case FRV_OPERAND_GRJ :
 268       print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRj, 0);
 269       break;
 270     case FRV_OPERAND_GRK :
 271       print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0);
 272       break;
 273     case FRV_OPERAND_GRKHI :
 274       print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0);
 275       break;
 276     case FRV_OPERAND_GRKLO :
 277       print_keyword (cd, info, & frv_cgen_opval_gr_names, fields->f_GRk, 0);
 278       break;
 279     case FRV_OPERAND_ICCI_1 :
 280       print_keyword (cd, info, & frv_cgen_opval_iccr_names, fields->f_ICCi_1, 0);
 281       break;
 282     case FRV_OPERAND_ICCI_2 :
 283       print_keyword (cd, info, & frv_cgen_opval_iccr_names, fields->f_ICCi_2, 0);
 284       break;
 285     case FRV_OPERAND_ICCI_3 :
 286       print_keyword (cd, info, & frv_cgen_opval_iccr_names, fields->f_ICCi_3, 0);
 287       break;
 288     case FRV_OPERAND_LI :
 289       print_normal (cd, info, fields->f_LI, 0, pc, length);
 290       break;
 291     case FRV_OPERAND_LRAD :
 292       print_normal (cd, info, fields->f_LRAD, 0, pc, length);
 293       break;
 294     case FRV_OPERAND_LRAE :
 295       print_normal (cd, info, fields->f_LRAE, 0, pc, length);
 296       break;
 297     case FRV_OPERAND_LRAS :
 298       print_normal (cd, info, fields->f_LRAS, 0, pc, length);
 299       break;
 300     case FRV_OPERAND_TLBPRL :
 301       print_normal (cd, info, fields->f_TLBPRL, 0, pc, length);
 302       break;
 303     case FRV_OPERAND_TLBPROPX :
 304       print_normal (cd, info, fields->f_TLBPRopx, 0, pc, length);
 305       break;
 306     case FRV_OPERAND_AE :
 307       print_normal (cd, info, fields->f_ae, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 308       break;
 309     case FRV_OPERAND_CALLANN :
 310       print_at (cd, info, fields->f_reloc_ann, 0, pc, length);
 311       break;
 312     case FRV_OPERAND_CCOND :
 313       print_normal (cd, info, fields->f_ccond, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 314       break;
 315     case FRV_OPERAND_COND :
 316       print_normal (cd, info, fields->f_cond, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 317       break;
 318     case FRV_OPERAND_D12 :
 319       print_normal (cd, info, fields->f_d12, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
 320       break;
 321     case FRV_OPERAND_DEBUG :
 322       print_normal (cd, info, fields->f_debug, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 323       break;
 324     case FRV_OPERAND_EIR :
 325       print_normal (cd, info, fields->f_eir, 0, pc, length);
 326       break;
 327     case FRV_OPERAND_HINT :
 328       print_normal (cd, info, fields->f_hint, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 329       break;
 330     case FRV_OPERAND_HINT_NOT_TAKEN :
 331       print_keyword (cd, info, & frv_cgen_opval_h_hint_not_taken, fields->f_hint, 0);
 332       break;
 333     case FRV_OPERAND_HINT_TAKEN :
 334       print_keyword (cd, info, & frv_cgen_opval_h_hint_taken, fields->f_hint, 0);
 335       break;
 336     case FRV_OPERAND_LABEL16 :
 337       print_address (cd, info, fields->f_label16, 0|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
 338       break;
 339     case FRV_OPERAND_LABEL24 :
 340       print_address (cd, info, fields->f_label24, 0|(1<<CGEN_OPERAND_PCREL_ADDR)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
 341       break;
 342     case FRV_OPERAND_LDANN :
 343       print_at (cd, info, fields->f_reloc_ann, 0, pc, length);
 344       break;
 345     case FRV_OPERAND_LDDANN :
 346       print_at (cd, info, fields->f_reloc_ann, 0, pc, length);
 347       break;
 348     case FRV_OPERAND_LOCK :
 349       print_normal (cd, info, fields->f_lock, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 350       break;
 351     case FRV_OPERAND_PACK :
 352       print_keyword (cd, info, & frv_cgen_opval_h_pack, fields->f_pack, 0);
 353       break;
 354     case FRV_OPERAND_S10 :
 355       print_normal (cd, info, fields->f_s10, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 356       break;
 357     case FRV_OPERAND_S12 :
 358       print_normal (cd, info, fields->f_d12, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 359       break;
 360     case FRV_OPERAND_S16 :
 361       print_normal (cd, info, fields->f_s16, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 362       break;
 363     case FRV_OPERAND_S5 :
 364       print_normal (cd, info, fields->f_s5, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 365       break;
 366     case FRV_OPERAND_S6 :
 367       print_normal (cd, info, fields->f_s6, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 368       break;
 369     case FRV_OPERAND_S6_1 :
 370       print_normal (cd, info, fields->f_s6_1, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 371       break;
 372     case FRV_OPERAND_SLO16 :
 373       print_lo (cd, info, fields->f_s16, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
 374       break;
 375     case FRV_OPERAND_SPR :
 376       print_spr (cd, info, & frv_cgen_opval_spr_names, fields->f_spr, 0|(1<<CGEN_OPERAND_VIRTUAL));
 377       break;
 378     case FRV_OPERAND_U12 :
 379       print_normal (cd, info, fields->f_u12, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_VIRTUAL), pc, length);
 380       break;
 381     case FRV_OPERAND_U16 :
 382       print_normal (cd, info, fields->f_u16, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 383       break;
 384     case FRV_OPERAND_U6 :
 385       print_normal (cd, info, fields->f_u6, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 386       break;
 387     case FRV_OPERAND_UHI16 :
 388       print_hi (cd, info, fields->f_u16, 0, pc, length);
 389       break;
 390     case FRV_OPERAND_ULO16 :
 391       print_lo (cd, info, fields->f_u16, 0, pc, length);
 392       break;
 393
 394     default :
 395       /* xgettext:c-format */
 396       fprintf (stderr, _("Unrecognized field %d while printing insn.\n"),
 397                opindex);
 398     abort ();
 399   }
 400 }
 401
 402 cgen_print_fn * const frv_cgen_print_handlers[] =
 403 {
 404   print_insn_normal,
 405 };
 406
 407
 408 void
 409 frv_cgen_init_dis (CGEN_CPU_DESC cd)
 410 {
 411   frv_cgen_init_opcode_table (cd);
 412   frv_cgen_init_ibld_table (cd);
 413   cd->print_handlers = & frv_cgen_print_handlers[0];
 414   cd->print_operand = frv_cgen_print_operand;
 415 }
 416
 417 \f
 418 /* Default print handler.  */
 419
 420 static void
 421 print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 422               void *dis_info,
 423               long value,
 424               unsigned int attrs,
 425               bfd_vma pc ATTRIBUTE_UNUSED,
 426               int length ATTRIBUTE_UNUSED)
 427 {
 428   disassemble_info *info = (disassemble_info *) dis_info;
 429
 430 #ifdef CGEN_PRINT_NORMAL
 431   CGEN_PRINT_NORMAL (cd, info, value, attrs, pc, length);
 432 #endif
 433
 434   /* Print the operand as directed by the attributes.  */
 435   if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
 436     ; /* nothing to do */
 437   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
 438     (*info->fprintf_func) (info->stream, "%ld", value);
 439   else
 440     (*info->fprintf_func) (info->stream, "0x%lx", value);
 441 }
 442
 443 /* Default address handler.  */
 444
 445 static void
 446 print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 447                void *dis_info,
 448                bfd_vma value,
 449                unsigned int attrs,
 450                bfd_vma pc ATTRIBUTE_UNUSED,
 451                int length ATTRIBUTE_UNUSED)
 452 {
 453   disassemble_info *info = (disassemble_info *) dis_info;
 454
 455 #ifdef CGEN_PRINT_ADDRESS
 456   CGEN_PRINT_ADDRESS (cd, info, value, attrs, pc, length);
 457 #endif
 458
 459   /* Print the operand as directed by the attributes.  */
 460   if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
 461     ; /* Nothing to do.  */
 462   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
 463     (*info->print_address_func) (value, info);
 464   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
 465     (*info->print_address_func) (value, info);
 466   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
 467     (*info->fprintf_func) (info->stream, "%ld", (long) value);
 468   else
 469     (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
 470 }
 471
 472 /* Keyword print handler.  */
 473
 474 static void
 475 print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 476                void *dis_info,
 477                CGEN_KEYWORD *keyword_table,
 478                long value,
 479                unsigned int attrs ATTRIBUTE_UNUSED)
 480 {
 481   disassemble_info *info = (disassemble_info *) dis_info;
 482   const CGEN_KEYWORD_ENTRY *ke;
 483
 484   ke = cgen_keyword_lookup_value (keyword_table, value);
 485   if (ke != NULL)
 486     (*info->fprintf_func) (info->stream, "%s", ke->name);
 487   else
 488     (*info->fprintf_func) (info->stream, "???");
 489 }
 490 \f
 491 /* Default insn printer.
 492
 493    DIS_INFO is defined as `void *' so the disassembler needn't know anything
 494    about disassemble_info.  */
 495
 496 static void
 497 print_insn_normal (CGEN_CPU_DESC cd,
 498                    void *dis_info,
 499                    const CGEN_INSN *insn,
 500                    CGEN_FIELDS *fields,
 501                    bfd_vma pc,
 502                    int length)
 503 {
 504   const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
 505   disassemble_info *info = (disassemble_info *) dis_info;
 506   const CGEN_SYNTAX_CHAR_TYPE *syn;
 507
 508   CGEN_INIT_PRINT (cd);
 509
 510   for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
 511     {
 512       if (CGEN_SYNTAX_MNEMONIC_P (*syn))
 513         {
 514           (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
 515           continue;
 516         }
 517       if (CGEN_SYNTAX_CHAR_P (*syn))
 518         {
 519           (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
 520           continue;
 521         }
 522
 523       /* We have an operand.  */
 524       frv_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
 525                                  fields, CGEN_INSN_ATTRS (insn), pc, length);
 526     }
 527 }
 528 \f
 529 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
 530    the extract info.
 531    Returns 0 if all is well, non-zero otherwise.  */
 532
 533 static int
 534 read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 535            bfd_vma pc,
 536            disassemble_info *info,
 537            bfd_byte *buf,
 538            int buflen,
 539            CGEN_EXTRACT_INFO *ex_info,
 540            unsigned long *insn_value)
 541 {
 542   int status = (*info->read_memory_func) (pc, buf, buflen, info);
 543
 544   if (status != 0)
 545     {
 546       (*info->memory_error_func) (status, pc, info);
 547       return -1;
 548     }
 549
 550   ex_info->dis_info = info;
 551   ex_info->valid = (1 << buflen) - 1;
 552   ex_info->insn_bytes = buf;
 553
 554   *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
 555   return 0;
 556 }
 557
 558 /* Utility to print an insn.
 559    BUF is the base part of the insn, target byte order, BUFLEN bytes long.
 560    The result is the size of the insn in bytes or zero for an unknown insn
 561    or -1 if an error occurs fetching data (memory_error_func will have
 562    been called).  */
 563
 564 static int
 565 print_insn (CGEN_CPU_DESC cd,
 566             bfd_vma pc,
 567             disassemble_info *info,
 568             bfd_byte *buf,
 569             unsigned int buflen)
 570 {
 571   CGEN_INSN_INT insn_value;
 572   const CGEN_INSN_LIST *insn_list;
 573   CGEN_EXTRACT_INFO ex_info;
 574   int basesize;
 575
 576   /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
 577   basesize = cd->base_insn_bitsize < buflen * 8 ?
 578                                      cd->base_insn_bitsize : buflen * 8;
 579   insn_value = cgen_get_insn_value (cd, buf, basesize);
 580
 581
 582   /* Fill in ex_info fields like read_insn would.  Don't actually call
 583      read_insn, since the incoming buffer is already read (and possibly
 584      modified a la m32r).  */
 585   ex_info.valid = (1 << buflen) - 1;
 586   ex_info.dis_info = info;
 587   ex_info.insn_bytes = buf;
 588
 589   /* The instructions are stored in hash lists.
 590      Pick the first one and keep trying until we find the right one.  */
 591
 592   insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
 593   while (insn_list != NULL)
 594     {
 595       const CGEN_INSN *insn = insn_list->insn;
 596       CGEN_FIELDS fields;
 597       int length;
 598       unsigned long insn_value_cropped;
 599
 600 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
 601       /* Not needed as insn shouldn't be in hash lists if not supported.  */
 602       /* Supported by this cpu?  */
 603       if (! frv_cgen_insn_supported (cd, insn))
 604         {
 605           insn_list = CGEN_DIS_NEXT_INSN (insn_list);
 606           continue;
 607         }
 608 #endif
 609
 610       /* Basic bit mask must be correct.  */
 611       /* ??? May wish to allow target to defer this check until the extract
 612          handler.  */
 613
 614       /* Base size may exceed this instruction's size.  Extract the
 615          relevant part from the buffer. */
 616       if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
 617           (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
 618         insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
 619                                            info->endian == BFD_ENDIAN_BIG);
 620       else
 621         insn_value_cropped = insn_value;
 622
 623       if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
 624           == CGEN_INSN_BASE_VALUE (insn))
 625         {
 626           /* Printing is handled in two passes.  The first pass parses the
 627              machine insn and extracts the fields.  The second pass prints
 628              them.  */
 629
 630           /* Make sure the entire insn is loaded into insn_value, if it
 631              can fit.  */
 632           if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
 633               (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
 634             {
 635               unsigned long full_insn_value;
 636               int rc = read_insn (cd, pc, info, buf,
 637                                   CGEN_INSN_BITSIZE (insn) / 8,
 638                                   & ex_info, & full_insn_value);
 639               if (rc != 0)
 640                 return rc;
 641               length = CGEN_EXTRACT_FN (cd, insn)
 642                 (cd, insn, &ex_info, full_insn_value, &fields, pc);
 643             }
 644           else
 645             length = CGEN_EXTRACT_FN (cd, insn)
 646               (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
 647
 648           /* Length < 0 -> error.  */
 649           if (length < 0)
 650             return length;
 651           if (length > 0)
 652             {
 653               CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
 654               /* Length is in bits, result is in bytes.  */
 655               return length / 8;
 656             }
 657         }
 658
 659       insn_list = CGEN_DIS_NEXT_INSN (insn_list);
 660     }
 661
 662   return 0;
 663 }
 664
 665 /* Default value for CGEN_PRINT_INSN.
 666    The result is the size of the insn in bytes or zero for an unknown insn
 667    or -1 if an error occured fetching bytes.  */
 668
 669 #ifndef CGEN_PRINT_INSN
 670 #define CGEN_PRINT_INSN default_print_insn
 671 #endif
 672
 673 static int
 674 default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
 675 {
 676   bfd_byte buf[CGEN_MAX_INSN_SIZE];
 677   int buflen;
 678   int status;
 679
 680   /* Attempt to read the base part of the insn.  */
 681   buflen = cd->base_insn_bitsize / 8;
 682   status = (*info->read_memory_func) (pc, buf, buflen, info);
 683
 684   /* Try again with the minimum part, if min < base.  */
 685   if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
 686     {
 687       buflen = cd->min_insn_bitsize / 8;
 688       status = (*info->read_memory_func) (pc, buf, buflen, info);
 689     }
 690
 691   if (status != 0)
 692     {
 693       (*info->memory_error_func) (status, pc, info);
 694       return -1;
 695     }
 696
 697   return print_insn (cd, pc, info, buf, buflen);
 698 }
 699
 700 /* Main entry point.
 701    Print one instruction from PC on INFO->STREAM.
 702    Return the size of the instruction (in bytes).  */
 703
 704 typedef struct cpu_desc_list
 705 {
 706   struct cpu_desc_list *next;
 707   int isa;
 708   int mach;
 709   int endian;
 710   CGEN_CPU_DESC cd;
 711 } cpu_desc_list;
 712
 713 int
 714 print_insn_frv (bfd_vma pc, disassemble_info *info)
 715 {
 716   static cpu_desc_list *cd_list = 0;
 717   cpu_desc_list *cl = 0;
 718   static CGEN_CPU_DESC cd = 0;
 719   static int prev_isa;
 720   static int prev_mach;
 721   static int prev_endian;
 722   int length;
 723   int isa,mach;
 724   int endian = (info->endian == BFD_ENDIAN_BIG
 725                 ? CGEN_ENDIAN_BIG
 726                 : CGEN_ENDIAN_LITTLE);
 727   enum bfd_architecture arch;
 728
 729   /* ??? gdb will set mach but leave the architecture as "unknown" */
 730 #ifndef CGEN_BFD_ARCH
 731 #define CGEN_BFD_ARCH bfd_arch_frv
 732 #endif
 733   arch = info->arch;
 734   if (arch == bfd_arch_unknown)
 735     arch = CGEN_BFD_ARCH;
 736
 737   /* There's no standard way to compute the machine or isa number
 738      so we leave it to the target.  */
 739 #ifdef CGEN_COMPUTE_MACH
 740   mach = CGEN_COMPUTE_MACH (info);
 741 #else
 742   mach = info->mach;
 743 #endif
 744
 745 #ifdef CGEN_COMPUTE_ISA
 746   isa = CGEN_COMPUTE_ISA (info);
 747 #else
 748   isa = info->insn_sets;
 749 #endif
 750
 751   /* If we've switched cpu's, try to find a handle we've used before */
 752   if (cd
 753       && (isa != prev_isa
 754           || mach != prev_mach
 755           || endian != prev_endian))
 756     {
 757       cd = 0;
 758       for (cl = cd_list; cl; cl = cl->next)
 759         {
 760           if (cl->isa == isa &&
 761               cl->mach == mach &&
 762               cl->endian == endian)
 763             {
 764               cd = cl->cd;
 765               break;
 766             }
 767         }
 768     }
 769
 770   /* If we haven't initialized yet, initialize the opcode table.  */
 771   if (! cd)
 772     {
 773       const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
 774       const char *mach_name;
 775
 776       if (!arch_type)
 777         abort ();
 778       mach_name = arch_type->printable_name;
 779
 780       prev_isa = isa;
 781       prev_mach = mach;
 782       prev_endian = endian;
 783       cd = frv_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
 784                                  CGEN_CPU_OPEN_BFDMACH, mach_name,
 785                                  CGEN_CPU_OPEN_ENDIAN, prev_endian,
 786                                  CGEN_CPU_OPEN_END);
 787       if (!cd)
 788         abort ();
 789
 790       /* Save this away for future reference.  */
 791       cl = xmalloc (sizeof (struct cpu_desc_list));
 792       cl->cd = cd;
 793       cl->isa = isa;
 794       cl->mach = mach;
 795       cl->endian = endian;
 796       cl->next = cd_list;
 797       cd_list = cl;
 798
 799       frv_cgen_init_dis (cd);
 800     }
 801
 802   /* We try to have as much common code as possible.
 803      But at this point some targets need to take over.  */
 804   /* ??? Some targets may need a hook elsewhere.  Try to avoid this,
 805      but if not possible try to move this hook elsewhere rather than
 806      have two hooks.  */
 807   length = CGEN_PRINT_INSN (cd, pc, info);
 808   if (length > 0)
 809     return length;
 810   if (length < 0)
 811     return -1;
 812
 813   (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
 814   return cd->default_insn_bitsize / 8;
 815 }