opcodes/frv-dis.c

   1 /* DO NOT EDIT!  -*- buffer-read-only: t -*- vi:set ro:  */
   2 /* Disassembler interface for targets using CGEN. -*- C -*-
   3    CGEN: Cpu tools GENerator
   4
   5    THIS FILE IS MACHINE GENERATED WITH CGEN.
   6    - the resultant file is machine generated, cgen-dis.in isn't
   7
   8    Copyright (C) 1996-2024 Free Software Foundation, Inc.
   9
  10    This file is part of libopcodes.
  11
  12    This library 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 3, or (at your option)
  15    any later version.
  16
  17    It is distributed in the hope that it will be useful, but WITHOUT
  18    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  19    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  20    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 "disassemble.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, void *, 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       opcodes_error_handler
 397         (_("internal error: unrecognized field %d while printing insn"),
 398          opindex);
 399       abort ();
 400   }
 401 }
 402
 403 cgen_print_fn * const frv_cgen_print_handlers[] =
 404 {
 405   print_insn_normal,
 406 };
 407
 408
 409 void
 410 frv_cgen_init_dis (CGEN_CPU_DESC cd)
 411 {
 412   frv_cgen_init_opcode_table (cd);
 413   frv_cgen_init_ibld_table (cd);
 414   cd->print_handlers = & frv_cgen_print_handlers[0];
 415   cd->print_operand = frv_cgen_print_operand;
 416 }
 417
 418 \f
 419 /* Default print handler.  */
 420
 421 static void
 422 print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 423               void *dis_info,
 424               long value,
 425               unsigned int attrs,
 426               bfd_vma pc ATTRIBUTE_UNUSED,
 427               int length ATTRIBUTE_UNUSED)
 428 {
 429   disassemble_info *info = (disassemble_info *) dis_info;
 430
 431   /* Print the operand as directed by the attributes.  */
 432   if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
 433     ; /* nothing to do */
 434   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
 435     (*info->fprintf_func) (info->stream, "%ld", value);
 436   else
 437     (*info->fprintf_func) (info->stream, "0x%lx", value);
 438 }
 439
 440 /* Default address handler.  */
 441
 442 static void
 443 print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 444                void *dis_info,
 445                bfd_vma value,
 446                unsigned int attrs,
 447                bfd_vma pc ATTRIBUTE_UNUSED,
 448                int length ATTRIBUTE_UNUSED)
 449 {
 450   disassemble_info *info = (disassemble_info *) dis_info;
 451
 452   /* Print the operand as directed by the attributes.  */
 453   if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
 454     ; /* Nothing to do.  */
 455   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
 456     (*info->print_address_func) (value, info);
 457   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
 458     (*info->print_address_func) (value, info);
 459   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
 460     (*info->fprintf_func) (info->stream, "%ld", (long) value);
 461   else
 462     (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
 463 }
 464
 465 /* Keyword print handler.  */
 466
 467 static void
 468 print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 469                void *dis_info,
 470                CGEN_KEYWORD *keyword_table,
 471                long value,
 472                unsigned int attrs ATTRIBUTE_UNUSED)
 473 {
 474   disassemble_info *info = (disassemble_info *) dis_info;
 475   const CGEN_KEYWORD_ENTRY *ke;
 476
 477   ke = cgen_keyword_lookup_value (keyword_table, value);
 478   if (ke != NULL)
 479     (*info->fprintf_func) (info->stream, "%s", ke->name);
 480   else
 481     (*info->fprintf_func) (info->stream, "???");
 482 }
 483 \f
 484 /* Default insn printer.
 485
 486    DIS_INFO is defined as `void *' so the disassembler needn't know anything
 487    about disassemble_info.  */
 488
 489 static void
 490 print_insn_normal (CGEN_CPU_DESC cd,
 491                    void *dis_info,
 492                    const CGEN_INSN *insn,
 493                    CGEN_FIELDS *fields,
 494                    bfd_vma pc,
 495                    int length)
 496 {
 497   const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
 498   disassemble_info *info = (disassemble_info *) dis_info;
 499   const CGEN_SYNTAX_CHAR_TYPE *syn;
 500
 501   CGEN_INIT_PRINT (cd);
 502
 503   for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
 504     {
 505       if (CGEN_SYNTAX_MNEMONIC_P (*syn))
 506         {
 507           (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
 508           continue;
 509         }
 510       if (CGEN_SYNTAX_CHAR_P (*syn))
 511         {
 512           (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
 513           continue;
 514         }
 515
 516       /* We have an operand.  */
 517       frv_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
 518                                  fields, CGEN_INSN_ATTRS (insn), pc, length);
 519     }
 520 }
 521 \f
 522 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
 523    the extract info.
 524    Returns 0 if all is well, non-zero otherwise.  */
 525
 526 static int
 527 read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 528            bfd_vma pc,
 529            disassemble_info *info,
 530            bfd_byte *buf,
 531            int buflen,
 532            CGEN_EXTRACT_INFO *ex_info,
 533            unsigned long *insn_value)
 534 {
 535   int status = (*info->read_memory_func) (pc, buf, buflen, info);
 536
 537   if (status != 0)
 538     {
 539       (*info->memory_error_func) (status, pc, info);
 540       return -1;
 541     }
 542
 543   ex_info->dis_info = info;
 544   ex_info->valid = (1 << buflen) - 1;
 545   ex_info->insn_bytes = buf;
 546
 547   *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
 548   return 0;
 549 }
 550
 551 /* Utility to print an insn.
 552    BUF is the base part of the insn, target byte order, BUFLEN bytes long.
 553    The result is the size of the insn in bytes or zero for an unknown insn
 554    or -1 if an error occurs fetching data (memory_error_func will have
 555    been called).  */
 556
 557 static int
 558 print_insn (CGEN_CPU_DESC cd,
 559             bfd_vma pc,
 560             disassemble_info *info,
 561             bfd_byte *buf,
 562             unsigned int buflen)
 563 {
 564   CGEN_INSN_INT insn_value;
 565   const CGEN_INSN_LIST *insn_list;
 566   CGEN_EXTRACT_INFO ex_info;
 567   int basesize;
 568
 569   /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
 570   basesize = cd->base_insn_bitsize < buflen * 8 ?
 571                                      cd->base_insn_bitsize : buflen * 8;
 572   insn_value = cgen_get_insn_value (cd, buf, basesize, cd->insn_endian);
 573
 574
 575   /* Fill in ex_info fields like read_insn would.  Don't actually call
 576      read_insn, since the incoming buffer is already read (and possibly
 577      modified a la m32r).  */
 578   ex_info.valid = (1 << buflen) - 1;
 579   ex_info.dis_info = info;
 580   ex_info.insn_bytes = buf;
 581
 582   /* The instructions are stored in hash lists.
 583      Pick the first one and keep trying until we find the right one.  */
 584
 585   insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
 586   while (insn_list != NULL)
 587     {
 588       const CGEN_INSN *insn = insn_list->insn;
 589       CGEN_FIELDS fields;
 590       int length;
 591       unsigned long insn_value_cropped;
 592
 593 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
 594       /* Not needed as insn shouldn't be in hash lists if not supported.  */
 595       /* Supported by this cpu?  */
 596       if (! frv_cgen_insn_supported (cd, insn))
 597         {
 598           insn_list = CGEN_DIS_NEXT_INSN (insn_list);
 599           continue;
 600         }
 601 #endif
 602
 603       /* Basic bit mask must be correct.  */
 604       /* ??? May wish to allow target to defer this check until the extract
 605          handler.  */
 606
 607       /* Base size may exceed this instruction's size.  Extract the
 608          relevant part from the buffer. */
 609       if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
 610           (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
 611         insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
 612                                            info->endian == BFD_ENDIAN_BIG);
 613       else
 614         insn_value_cropped = insn_value;
 615
 616       if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
 617           == CGEN_INSN_BASE_VALUE (insn))
 618         {
 619           /* Printing is handled in two passes.  The first pass parses the
 620              machine insn and extracts the fields.  The second pass prints
 621              them.  */
 622
 623           /* Make sure the entire insn is loaded into insn_value, if it
 624              can fit.  */
 625           if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
 626               (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
 627             {
 628               unsigned long full_insn_value;
 629               int rc = read_insn (cd, pc, info, buf,
 630                                   CGEN_INSN_BITSIZE (insn) / 8,
 631                                   & ex_info, & full_insn_value);
 632               if (rc != 0)
 633                 return rc;
 634               length = CGEN_EXTRACT_FN (cd, insn)
 635                 (cd, insn, &ex_info, full_insn_value, &fields, pc);
 636             }
 637           else
 638             length = CGEN_EXTRACT_FN (cd, insn)
 639               (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
 640
 641           /* Length < 0 -> error.  */
 642           if (length < 0)
 643             return length;
 644           if (length > 0)
 645             {
 646               CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
 647               /* Length is in bits, result is in bytes.  */
 648               return length / 8;
 649             }
 650         }
 651
 652       insn_list = CGEN_DIS_NEXT_INSN (insn_list);
 653     }
 654
 655   return 0;
 656 }
 657
 658 /* Default value for CGEN_PRINT_INSN.
 659    The result is the size of the insn in bytes or zero for an unknown insn
 660    or -1 if an error occured fetching bytes.  */
 661
 662 #ifndef CGEN_PRINT_INSN
 663 #define CGEN_PRINT_INSN default_print_insn
 664 #endif
 665
 666 static int
 667 default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
 668 {
 669   bfd_byte buf[CGEN_MAX_INSN_SIZE];
 670   int buflen;
 671   int status;
 672
 673   /* Attempt to read the base part of the insn.  */
 674   buflen = cd->base_insn_bitsize / 8;
 675   status = (*info->read_memory_func) (pc, buf, buflen, info);
 676
 677   /* Try again with the minimum part, if min < base.  */
 678   if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
 679     {
 680       buflen = cd->min_insn_bitsize / 8;
 681       status = (*info->read_memory_func) (pc, buf, buflen, info);
 682     }
 683
 684   if (status != 0)
 685     {
 686       (*info->memory_error_func) (status, pc, info);
 687       return -1;
 688     }
 689
 690   return print_insn (cd, pc, info, buf, buflen);
 691 }
 692
 693 /* Main entry point.
 694    Print one instruction from PC on INFO->STREAM.
 695    Return the size of the instruction (in bytes).  */
 696
 697 typedef struct cpu_desc_list
 698 {
 699   struct cpu_desc_list *next;
 700   CGEN_BITSET *isa;
 701   int mach;
 702   int endian;
 703   int insn_endian;
 704   CGEN_CPU_DESC cd;
 705 } cpu_desc_list;
 706
 707 int
 708 print_insn_frv (bfd_vma pc, disassemble_info *info)
 709 {
 710   static cpu_desc_list *cd_list = 0;
 711   cpu_desc_list *cl = 0;
 712   static CGEN_CPU_DESC cd = 0;
 713   static CGEN_BITSET *prev_isa;
 714   static int prev_mach;
 715   static int prev_endian;
 716   static int prev_insn_endian;
 717   int length;
 718   CGEN_BITSET *isa;
 719   int mach;
 720   int endian = (info->endian == BFD_ENDIAN_BIG
 721                 ? CGEN_ENDIAN_BIG
 722                 : CGEN_ENDIAN_LITTLE);
 723   int insn_endian = (info->endian_code == BFD_ENDIAN_BIG
 724                      ? CGEN_ENDIAN_BIG
 725                      : CGEN_ENDIAN_LITTLE);
 726   enum bfd_architecture arch;
 727
 728   /* ??? gdb will set mach but leave the architecture as "unknown" */
 729 #ifndef CGEN_BFD_ARCH
 730 #define CGEN_BFD_ARCH bfd_arch_frv
 731 #endif
 732   arch = info->arch;
 733   if (arch == bfd_arch_unknown)
 734     arch = CGEN_BFD_ARCH;
 735
 736   /* There's no standard way to compute the machine or isa number
 737      so we leave it to the target.  */
 738 #ifdef CGEN_COMPUTE_MACH
 739   mach = CGEN_COMPUTE_MACH (info);
 740 #else
 741   mach = info->mach;
 742 #endif
 743
 744 #ifdef CGEN_COMPUTE_ISA
 745   {
 746     static CGEN_BITSET *permanent_isa;
 747
 748     if (!permanent_isa)
 749       permanent_isa = cgen_bitset_create (MAX_ISAS);
 750     isa = permanent_isa;
 751     cgen_bitset_clear (isa);
 752     cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info));
 753   }
 754 #else
 755   isa = info->private_data;
 756 #endif
 757
 758   /* If we've switched cpu's, try to find a handle we've used before */
 759   if (cd
 760       && (cgen_bitset_compare (isa, prev_isa) != 0
 761           || mach != prev_mach
 762           || endian != prev_endian))
 763     {
 764       cd = 0;
 765       for (cl = cd_list; cl; cl = cl->next)
 766         {
 767           if (cgen_bitset_compare (cl->isa, isa) == 0 &&
 768               cl->mach == mach &&
 769               cl->endian == endian)
 770             {
 771               cd = cl->cd;
 772               prev_isa = cd->isas;
 773               break;
 774             }
 775         }
 776     }
 777
 778   /* If we haven't initialized yet, initialize the opcode table.  */
 779   if (! cd)
 780     {
 781       const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
 782       const char *mach_name;
 783
 784       if (!arch_type)
 785         abort ();
 786       mach_name = arch_type->printable_name;
 787
 788       prev_isa = cgen_bitset_copy (isa);
 789       prev_mach = mach;
 790       prev_endian = endian;
 791       prev_insn_endian = insn_endian;
 792       cd = frv_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
 793                                  CGEN_CPU_OPEN_BFDMACH, mach_name,
 794                                  CGEN_CPU_OPEN_ENDIAN, prev_endian,
 795                                  CGEN_CPU_OPEN_INSN_ENDIAN, prev_insn_endian,
 796                                  CGEN_CPU_OPEN_END);
 797       if (!cd)
 798         abort ();
 799
 800       /* Save this away for future reference.  */
 801       cl = xmalloc (sizeof (struct cpu_desc_list));
 802       cl->cd = cd;
 803       cl->isa = prev_isa;
 804       cl->mach = mach;
 805       cl->endian = endian;
 806       cl->next = cd_list;
 807       cd_list = cl;
 808
 809       frv_cgen_init_dis (cd);
 810     }
 811
 812   /* We try to have as much common code as possible.
 813      But at this point some targets need to take over.  */
 814   /* ??? Some targets may need a hook elsewhere.  Try to avoid this,
 815      but if not possible try to move this hook elsewhere rather than
 816      have two hooks.  */
 817   length = CGEN_PRINT_INSN (cd, pc, info);
 818   if (length > 0)
 819     return length;
 820   if (length < 0)
 821     return -1;
 822
 823   (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
 824   return cd->default_insn_bitsize / 8;
 825 }