opcodes/xc16x-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) 1996-2020 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 "xc16x-desc.h"
  37 #include "xc16x-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
  63 /* Print an operand with a "." prefix.
  64    NOTE: This prints the operand in hex.
  65    ??? This exists to maintain disassembler compatibility with previous
  66    versions.  Ideally we'd print the "." in print_dot.  */
  67
  68 static void
  69 print_with_dot_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
  70                        void * dis_info,
  71                        long value,
  72                        unsigned attrs ATTRIBUTE_UNUSED,
  73                        bfd_vma pc ATTRIBUTE_UNUSED,
  74                        int length ATTRIBUTE_UNUSED)
  75 {
  76   disassemble_info *info = (disassemble_info *) dis_info;
  77
  78   info->fprintf_func (info->stream, ".");
  79   info->fprintf_func (info->stream, "0x%lx", value);
  80 }
  81
  82 /* Print an operand with a "#pof:" prefix.
  83    NOTE: This prints the operand as an address.
  84    ??? This exists to maintain disassembler compatibility with previous
  85    versions.  Ideally we'd print "#pof:" in print_pof.  */
  86
  87 static void
  88 print_with_pof_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
  89                        void * dis_info,
  90                        bfd_vma value,
  91                        unsigned attrs ATTRIBUTE_UNUSED,
  92                        bfd_vma pc ATTRIBUTE_UNUSED,
  93                        int length ATTRIBUTE_UNUSED)
  94 {
  95   disassemble_info *info = (disassemble_info *) dis_info;
  96
  97   info->fprintf_func (info->stream, "#pof:");
  98   info->fprintf_func (info->stream, "0x%lx", (long) value);
  99 }
 100
 101 /* Print an operand with a "#pag:" prefix.
 102    NOTE: This prints the operand in hex.
 103    ??? This exists to maintain disassembler compatibility with previous
 104    versions.  Ideally we'd print "#pag:" in print_pag.  */
 105
 106 static void
 107 print_with_pag_prefix (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 108                        void * dis_info,
 109                        long value,
 110                        unsigned attrs ATTRIBUTE_UNUSED,
 111                        bfd_vma pc ATTRIBUTE_UNUSED,
 112                        int length ATTRIBUTE_UNUSED)
 113 {
 114   disassemble_info *info = (disassemble_info *) dis_info;
 115
 116   info->fprintf_func (info->stream, "#pag:");
 117   info->fprintf_func (info->stream, "0x%lx", value);
 118 }
 119
 120 /* Print a 'pof:' prefix to an operand.  */
 121
 122 static void
 123 print_pof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 124            void * dis_info ATTRIBUTE_UNUSED,
 125            long value ATTRIBUTE_UNUSED,
 126            unsigned int attrs ATTRIBUTE_UNUSED,
 127            bfd_vma pc ATTRIBUTE_UNUSED,
 128            int length ATTRIBUTE_UNUSED)
 129 {
 130 }
 131
 132 /* Print a 'pag:' prefix to an operand.  */
 133
 134 static void
 135 print_pag (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 136            void * dis_info ATTRIBUTE_UNUSED,
 137            long value ATTRIBUTE_UNUSED,
 138            unsigned int attrs ATTRIBUTE_UNUSED,
 139            bfd_vma pc ATTRIBUTE_UNUSED,
 140            int length ATTRIBUTE_UNUSED)
 141 {
 142 }
 143
 144 /* Print a 'sof:' prefix to an operand.  */
 145
 146 static void
 147 print_sof (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 148            void * dis_info,
 149            long value ATTRIBUTE_UNUSED,
 150            unsigned int attrs ATTRIBUTE_UNUSED,
 151            bfd_vma pc ATTRIBUTE_UNUSED,
 152            int length ATTRIBUTE_UNUSED)
 153 {
 154   disassemble_info *info = (disassemble_info *) dis_info;
 155
 156   info->fprintf_func (info->stream, "sof:");
 157 }
 158
 159 /* Print a 'seg:' prefix to an operand.  */
 160
 161 static void
 162 print_seg (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 163            void * dis_info,
 164            long value ATTRIBUTE_UNUSED,
 165            unsigned int attrs ATTRIBUTE_UNUSED,
 166            bfd_vma pc ATTRIBUTE_UNUSED,
 167            int length ATTRIBUTE_UNUSED)
 168 {
 169   disassemble_info *info = (disassemble_info *) dis_info;
 170
 171   info->fprintf_func (info->stream, "seg:");
 172 }
 173
 174 /* Print a '#' prefix to an operand.  */
 175
 176 static void
 177 print_hash (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 178             void * dis_info,
 179             long value ATTRIBUTE_UNUSED,
 180             unsigned int attrs ATTRIBUTE_UNUSED,
 181             bfd_vma pc ATTRIBUTE_UNUSED,
 182             int length ATTRIBUTE_UNUSED)
 183 {
 184   disassemble_info *info = (disassemble_info *) dis_info;
 185
 186   info->fprintf_func (info->stream, "#");
 187 }
 188
 189 /* Print a '.' prefix to an operand.  */
 190
 191 static void
 192 print_dot (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 193            void * dis_info ATTRIBUTE_UNUSED,
 194            long value ATTRIBUTE_UNUSED,
 195            unsigned int attrs ATTRIBUTE_UNUSED,
 196            bfd_vma pc ATTRIBUTE_UNUSED,
 197            int length ATTRIBUTE_UNUSED)
 198 {
 199 }
 200
 201 /* -- */
 202
 203 void xc16x_cgen_print_operand
 204   (CGEN_CPU_DESC, int, PTR, CGEN_FIELDS *, void const *, bfd_vma, int);
 205
 206 /* Main entry point for printing operands.
 207    XINFO is a `void *' and not a `disassemble_info *' to not put a requirement
 208    of dis-asm.h on cgen.h.
 209
 210    This function is basically just a big switch statement.  Earlier versions
 211    used tables to look up the function to use, but
 212    - if the table contains both assembler and disassembler functions then
 213      the disassembler contains much of the assembler and vice-versa,
 214    - there's a lot of inlining possibilities as things grow,
 215    - using a switch statement avoids the function call overhead.
 216
 217    This function could be moved into `print_insn_normal', but keeping it
 218    separate makes clear the interface between `print_insn_normal' and each of
 219    the handlers.  */
 220
 221 void
 222 xc16x_cgen_print_operand (CGEN_CPU_DESC cd,
 223                            int opindex,
 224                            void * xinfo,
 225                            CGEN_FIELDS *fields,
 226                            void const *attrs ATTRIBUTE_UNUSED,
 227                            bfd_vma pc,
 228                            int length)
 229 {
 230   disassemble_info *info = (disassemble_info *) xinfo;
 231
 232   switch (opindex)
 233     {
 234     case XC16X_OPERAND_REGNAM :
 235       print_keyword (cd, info, & xc16x_cgen_opval_psw_names, fields->f_reg8, 0);
 236       break;
 237     case XC16X_OPERAND_BIT01 :
 238       print_normal (cd, info, fields->f_op_1bit, 0, pc, length);
 239       break;
 240     case XC16X_OPERAND_BIT1 :
 241       print_normal (cd, info, fields->f_op_bit1, 0, pc, length);
 242       break;
 243     case XC16X_OPERAND_BIT2 :
 244       print_normal (cd, info, fields->f_op_bit2, 0, pc, length);
 245       break;
 246     case XC16X_OPERAND_BIT4 :
 247       print_normal (cd, info, fields->f_op_bit4, 0, pc, length);
 248       break;
 249     case XC16X_OPERAND_BIT8 :
 250       print_normal (cd, info, fields->f_op_bit8, 0, pc, length);
 251       break;
 252     case XC16X_OPERAND_BITONE :
 253       print_normal (cd, info, fields->f_op_onebit, 0, pc, length);
 254       break;
 255     case XC16X_OPERAND_CADDR :
 256       print_address (cd, info, fields->f_offset16, 0|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
 257       break;
 258     case XC16X_OPERAND_COND :
 259       print_keyword (cd, info, & xc16x_cgen_opval_conditioncode_names, fields->f_condcode, 0);
 260       break;
 261     case XC16X_OPERAND_DATA8 :
 262       print_normal (cd, info, fields->f_data8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 263       break;
 264     case XC16X_OPERAND_DATAHI8 :
 265       print_normal (cd, info, fields->f_datahi8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 266       break;
 267     case XC16X_OPERAND_DOT :
 268       print_dot (cd, info, 0, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
 269       break;
 270     case XC16X_OPERAND_DR :
 271       print_keyword (cd, info, & xc16x_cgen_opval_gr_names, fields->f_r1, 0);
 272       break;
 273     case XC16X_OPERAND_DRB :
 274       print_keyword (cd, info, & xc16x_cgen_opval_grb_names, fields->f_r1, 0);
 275       break;
 276     case XC16X_OPERAND_DRI :
 277       print_keyword (cd, info, & xc16x_cgen_opval_gr_names, fields->f_r4, 0);
 278       break;
 279     case XC16X_OPERAND_EXTCOND :
 280       print_keyword (cd, info, & xc16x_cgen_opval_extconditioncode_names, fields->f_extccode, 0);
 281       break;
 282     case XC16X_OPERAND_GENREG :
 283       print_keyword (cd, info, & xc16x_cgen_opval_r8_names, fields->f_regb8, 0);
 284       break;
 285     case XC16X_OPERAND_HASH :
 286       print_hash (cd, info, 0, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
 287       break;
 288     case XC16X_OPERAND_ICOND :
 289       print_keyword (cd, info, & xc16x_cgen_opval_conditioncode_names, fields->f_icondcode, 0);
 290       break;
 291     case XC16X_OPERAND_LBIT2 :
 292       print_normal (cd, info, fields->f_op_lbit2, 0, pc, length);
 293       break;
 294     case XC16X_OPERAND_LBIT4 :
 295       print_normal (cd, info, fields->f_op_lbit4, 0, pc, length);
 296       break;
 297     case XC16X_OPERAND_MASK8 :
 298       print_normal (cd, info, fields->f_mask8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 299       break;
 300     case XC16X_OPERAND_MASKLO8 :
 301       print_normal (cd, info, fields->f_datahi8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 302       break;
 303     case XC16X_OPERAND_MEMGR8 :
 304       print_keyword (cd, info, & xc16x_cgen_opval_memgr8_names, fields->f_memgr8, 0);
 305       break;
 306     case XC16X_OPERAND_MEMORY :
 307       print_address (cd, info, fields->f_memory, 0, pc, length);
 308       break;
 309     case XC16X_OPERAND_PAG :
 310       print_pag (cd, info, 0, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
 311       break;
 312     case XC16X_OPERAND_PAGENUM :
 313       print_normal (cd, info, fields->f_pagenum, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 314       break;
 315     case XC16X_OPERAND_POF :
 316       print_pof (cd, info, 0, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
 317       break;
 318     case XC16X_OPERAND_QBIT :
 319       print_with_dot_prefix (cd, info, fields->f_qbit, 0|(1<<CGEN_OPERAND_DOT_PREFIX), pc, length);
 320       break;
 321     case XC16X_OPERAND_QHIBIT :
 322       print_with_dot_prefix (cd, info, fields->f_qhibit, 0|(1<<CGEN_OPERAND_DOT_PREFIX), pc, length);
 323       break;
 324     case XC16X_OPERAND_QLOBIT :
 325       print_with_dot_prefix (cd, info, fields->f_qlobit, 0|(1<<CGEN_OPERAND_DOT_PREFIX), pc, length);
 326       break;
 327     case XC16X_OPERAND_REG8 :
 328       print_keyword (cd, info, & xc16x_cgen_opval_r8_names, fields->f_reg8, 0);
 329       break;
 330     case XC16X_OPERAND_REGB8 :
 331       print_keyword (cd, info, & xc16x_cgen_opval_grb8_names, fields->f_regb8, 0);
 332       break;
 333     case XC16X_OPERAND_REGBMEM8 :
 334       print_keyword (cd, info, & xc16x_cgen_opval_regbmem8_names, fields->f_regmem8, 0);
 335       break;
 336     case XC16X_OPERAND_REGHI8 :
 337       print_keyword (cd, info, & xc16x_cgen_opval_r8_names, fields->f_reghi8, 0);
 338       break;
 339     case XC16X_OPERAND_REGMEM8 :
 340       print_keyword (cd, info, & xc16x_cgen_opval_regmem8_names, fields->f_regmem8, 0);
 341       break;
 342     case XC16X_OPERAND_REGOFF8 :
 343       print_keyword (cd, info, & xc16x_cgen_opval_r8_names, fields->f_regoff8, 0);
 344       break;
 345     case XC16X_OPERAND_REL :
 346       print_normal (cd, info, fields->f_rel8, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
 347       break;
 348     case XC16X_OPERAND_RELHI :
 349       print_normal (cd, info, fields->f_relhi8, 0|(1<<CGEN_OPERAND_SIGNED)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
 350       break;
 351     case XC16X_OPERAND_SEG :
 352       print_normal (cd, info, fields->f_seg8, 0, pc, length);
 353       break;
 354     case XC16X_OPERAND_SEGHI8 :
 355       print_normal (cd, info, fields->f_segnum8, 0, pc, length);
 356       break;
 357     case XC16X_OPERAND_SEGM :
 358       print_seg (cd, info, 0, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
 359       break;
 360     case XC16X_OPERAND_SOF :
 361       print_sof (cd, info, 0, 0|(1<<CGEN_OPERAND_SIGNED), pc, length);
 362       break;
 363     case XC16X_OPERAND_SR :
 364       print_keyword (cd, info, & xc16x_cgen_opval_gr_names, fields->f_r2, 0);
 365       break;
 366     case XC16X_OPERAND_SR2 :
 367       print_keyword (cd, info, & xc16x_cgen_opval_gr_names, fields->f_r0, 0);
 368       break;
 369     case XC16X_OPERAND_SRB :
 370       print_keyword (cd, info, & xc16x_cgen_opval_grb_names, fields->f_r2, 0);
 371       break;
 372     case XC16X_OPERAND_SRC1 :
 373       print_keyword (cd, info, & xc16x_cgen_opval_gr_names, fields->f_r1, 0);
 374       break;
 375     case XC16X_OPERAND_SRC2 :
 376       print_keyword (cd, info, & xc16x_cgen_opval_gr_names, fields->f_r2, 0);
 377       break;
 378     case XC16X_OPERAND_SRDIV :
 379       print_keyword (cd, info, & xc16x_cgen_opval_regdiv8_names, fields->f_reg8, 0);
 380       break;
 381     case XC16X_OPERAND_U4 :
 382       print_keyword (cd, info, & xc16x_cgen_opval_reg0_name, fields->f_uimm4, 0);
 383       break;
 384     case XC16X_OPERAND_UIMM16 :
 385       print_normal (cd, info, fields->f_uimm16, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 386       break;
 387     case XC16X_OPERAND_UIMM2 :
 388       print_keyword (cd, info, & xc16x_cgen_opval_ext_names, fields->f_uimm2, 0|(1<<CGEN_OPERAND_HASH_PREFIX));
 389       break;
 390     case XC16X_OPERAND_UIMM3 :
 391       print_keyword (cd, info, & xc16x_cgen_opval_reg0_name1, fields->f_uimm3, 0|(1<<CGEN_OPERAND_HASH_PREFIX));
 392       break;
 393     case XC16X_OPERAND_UIMM4 :
 394       print_normal (cd, info, fields->f_uimm4, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 395       break;
 396     case XC16X_OPERAND_UIMM7 :
 397       print_normal (cd, info, fields->f_uimm7, 0|(1<<CGEN_OPERAND_HASH_PREFIX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_PCREL_ADDR), pc, length);
 398       break;
 399     case XC16X_OPERAND_UIMM8 :
 400       print_normal (cd, info, fields->f_uimm8, 0|(1<<CGEN_OPERAND_HASH_PREFIX), pc, length);
 401       break;
 402     case XC16X_OPERAND_UPAG16 :
 403       print_with_pag_prefix (cd, info, fields->f_uimm16, 0|(1<<CGEN_OPERAND_PAG_PREFIX), pc, length);
 404       break;
 405     case XC16X_OPERAND_UPOF16 :
 406       print_with_pof_prefix (cd, info, fields->f_memory, 0|(1<<CGEN_OPERAND_POF_PREFIX), pc, length);
 407       break;
 408     case XC16X_OPERAND_USEG16 :
 409       print_normal (cd, info, fields->f_offset16, 0|(1<<CGEN_OPERAND_SEG_PREFIX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
 410       break;
 411     case XC16X_OPERAND_USEG8 :
 412       print_normal (cd, info, fields->f_seg8, 0|(1<<CGEN_OPERAND_SEG_PREFIX), pc, length);
 413       break;
 414     case XC16X_OPERAND_USOF16 :
 415       print_normal (cd, info, fields->f_offset16, 0|(1<<CGEN_OPERAND_SOF_PREFIX)|(1<<CGEN_OPERAND_RELOC)|(1<<CGEN_OPERAND_ABS_ADDR), pc, length);
 416       break;
 417
 418     default :
 419       /* xgettext:c-format */
 420       opcodes_error_handler
 421         (_("internal error: unrecognized field %d while printing insn"),
 422          opindex);
 423       abort ();
 424   }
 425 }
 426
 427 cgen_print_fn * const xc16x_cgen_print_handlers[] =
 428 {
 429   print_insn_normal,
 430 };
 431
 432
 433 void
 434 xc16x_cgen_init_dis (CGEN_CPU_DESC cd)
 435 {
 436   xc16x_cgen_init_opcode_table (cd);
 437   xc16x_cgen_init_ibld_table (cd);
 438   cd->print_handlers = & xc16x_cgen_print_handlers[0];
 439   cd->print_operand = xc16x_cgen_print_operand;
 440 }
 441
 442 \f
 443 /* Default print handler.  */
 444
 445 static void
 446 print_normal (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 447               void *dis_info,
 448               long 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   /* Print the operand as directed by the attributes.  */
 456   if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
 457     ; /* nothing to do */
 458   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
 459     (*info->fprintf_func) (info->stream, "%ld", value);
 460   else
 461     (*info->fprintf_func) (info->stream, "0x%lx", value);
 462 }
 463
 464 /* Default address handler.  */
 465
 466 static void
 467 print_address (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 468                void *dis_info,
 469                bfd_vma value,
 470                unsigned int attrs,
 471                bfd_vma pc ATTRIBUTE_UNUSED,
 472                int length ATTRIBUTE_UNUSED)
 473 {
 474   disassemble_info *info = (disassemble_info *) dis_info;
 475
 476   /* Print the operand as directed by the attributes.  */
 477   if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SEM_ONLY))
 478     ; /* Nothing to do.  */
 479   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_PCREL_ADDR))
 480     (*info->print_address_func) (value, info);
 481   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_ABS_ADDR))
 482     (*info->print_address_func) (value, info);
 483   else if (CGEN_BOOL_ATTR (attrs, CGEN_OPERAND_SIGNED))
 484     (*info->fprintf_func) (info->stream, "%ld", (long) value);
 485   else
 486     (*info->fprintf_func) (info->stream, "0x%lx", (long) value);
 487 }
 488
 489 /* Keyword print handler.  */
 490
 491 static void
 492 print_keyword (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 493                void *dis_info,
 494                CGEN_KEYWORD *keyword_table,
 495                long value,
 496                unsigned int attrs ATTRIBUTE_UNUSED)
 497 {
 498   disassemble_info *info = (disassemble_info *) dis_info;
 499   const CGEN_KEYWORD_ENTRY *ke;
 500
 501   ke = cgen_keyword_lookup_value (keyword_table, value);
 502   if (ke != NULL)
 503     (*info->fprintf_func) (info->stream, "%s", ke->name);
 504   else
 505     (*info->fprintf_func) (info->stream, "???");
 506 }
 507 \f
 508 /* Default insn printer.
 509
 510    DIS_INFO is defined as `void *' so the disassembler needn't know anything
 511    about disassemble_info.  */
 512
 513 static void
 514 print_insn_normal (CGEN_CPU_DESC cd,
 515                    void *dis_info,
 516                    const CGEN_INSN *insn,
 517                    CGEN_FIELDS *fields,
 518                    bfd_vma pc,
 519                    int length)
 520 {
 521   const CGEN_SYNTAX *syntax = CGEN_INSN_SYNTAX (insn);
 522   disassemble_info *info = (disassemble_info *) dis_info;
 523   const CGEN_SYNTAX_CHAR_TYPE *syn;
 524
 525   CGEN_INIT_PRINT (cd);
 526
 527   for (syn = CGEN_SYNTAX_STRING (syntax); *syn; ++syn)
 528     {
 529       if (CGEN_SYNTAX_MNEMONIC_P (*syn))
 530         {
 531           (*info->fprintf_func) (info->stream, "%s", CGEN_INSN_MNEMONIC (insn));
 532           continue;
 533         }
 534       if (CGEN_SYNTAX_CHAR_P (*syn))
 535         {
 536           (*info->fprintf_func) (info->stream, "%c", CGEN_SYNTAX_CHAR (*syn));
 537           continue;
 538         }
 539
 540       /* We have an operand.  */
 541       xc16x_cgen_print_operand (cd, CGEN_SYNTAX_FIELD (*syn), info,
 542                                  fields, CGEN_INSN_ATTRS (insn), pc, length);
 543     }
 544 }
 545 \f
 546 /* Subroutine of print_insn. Reads an insn into the given buffers and updates
 547    the extract info.
 548    Returns 0 if all is well, non-zero otherwise.  */
 549
 550 static int
 551 read_insn (CGEN_CPU_DESC cd ATTRIBUTE_UNUSED,
 552            bfd_vma pc,
 553            disassemble_info *info,
 554            bfd_byte *buf,
 555            int buflen,
 556            CGEN_EXTRACT_INFO *ex_info,
 557            unsigned long *insn_value)
 558 {
 559   int status = (*info->read_memory_func) (pc, buf, buflen, info);
 560
 561   if (status != 0)
 562     {
 563       (*info->memory_error_func) (status, pc, info);
 564       return -1;
 565     }
 566
 567   ex_info->dis_info = info;
 568   ex_info->valid = (1 << buflen) - 1;
 569   ex_info->insn_bytes = buf;
 570
 571   *insn_value = bfd_get_bits (buf, buflen * 8, info->endian == BFD_ENDIAN_BIG);
 572   return 0;
 573 }
 574
 575 /* Utility to print an insn.
 576    BUF is the base part of the insn, target byte order, BUFLEN bytes long.
 577    The result is the size of the insn in bytes or zero for an unknown insn
 578    or -1 if an error occurs fetching data (memory_error_func will have
 579    been called).  */
 580
 581 static int
 582 print_insn (CGEN_CPU_DESC cd,
 583             bfd_vma pc,
 584             disassemble_info *info,
 585             bfd_byte *buf,
 586             unsigned int buflen)
 587 {
 588   CGEN_INSN_INT insn_value;
 589   const CGEN_INSN_LIST *insn_list;
 590   CGEN_EXTRACT_INFO ex_info;
 591   int basesize;
 592
 593   /* Extract base part of instruction, just in case CGEN_DIS_* uses it. */
 594   basesize = cd->base_insn_bitsize < buflen * 8 ?
 595                                      cd->base_insn_bitsize : buflen * 8;
 596   insn_value = cgen_get_insn_value (cd, buf, basesize);
 597
 598
 599   /* Fill in ex_info fields like read_insn would.  Don't actually call
 600      read_insn, since the incoming buffer is already read (and possibly
 601      modified a la m32r).  */
 602   ex_info.valid = (1 << buflen) - 1;
 603   ex_info.dis_info = info;
 604   ex_info.insn_bytes = buf;
 605
 606   /* The instructions are stored in hash lists.
 607      Pick the first one and keep trying until we find the right one.  */
 608
 609   insn_list = CGEN_DIS_LOOKUP_INSN (cd, (char *) buf, insn_value);
 610   while (insn_list != NULL)
 611     {
 612       const CGEN_INSN *insn = insn_list->insn;
 613       CGEN_FIELDS fields;
 614       int length;
 615       unsigned long insn_value_cropped;
 616
 617 #ifdef CGEN_VALIDATE_INSN_SUPPORTED
 618       /* Not needed as insn shouldn't be in hash lists if not supported.  */
 619       /* Supported by this cpu?  */
 620       if (! xc16x_cgen_insn_supported (cd, insn))
 621         {
 622           insn_list = CGEN_DIS_NEXT_INSN (insn_list);
 623           continue;
 624         }
 625 #endif
 626
 627       /* Basic bit mask must be correct.  */
 628       /* ??? May wish to allow target to defer this check until the extract
 629          handler.  */
 630
 631       /* Base size may exceed this instruction's size.  Extract the
 632          relevant part from the buffer. */
 633       if ((unsigned) (CGEN_INSN_BITSIZE (insn) / 8) < buflen &&
 634           (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
 635         insn_value_cropped = bfd_get_bits (buf, CGEN_INSN_BITSIZE (insn),
 636                                            info->endian == BFD_ENDIAN_BIG);
 637       else
 638         insn_value_cropped = insn_value;
 639
 640       if ((insn_value_cropped & CGEN_INSN_BASE_MASK (insn))
 641           == CGEN_INSN_BASE_VALUE (insn))
 642         {
 643           /* Printing is handled in two passes.  The first pass parses the
 644              machine insn and extracts the fields.  The second pass prints
 645              them.  */
 646
 647           /* Make sure the entire insn is loaded into insn_value, if it
 648              can fit.  */
 649           if (((unsigned) CGEN_INSN_BITSIZE (insn) > cd->base_insn_bitsize) &&
 650               (unsigned) (CGEN_INSN_BITSIZE (insn) / 8) <= sizeof (unsigned long))
 651             {
 652               unsigned long full_insn_value;
 653               int rc = read_insn (cd, pc, info, buf,
 654                                   CGEN_INSN_BITSIZE (insn) / 8,
 655                                   & ex_info, & full_insn_value);
 656               if (rc != 0)
 657                 return rc;
 658               length = CGEN_EXTRACT_FN (cd, insn)
 659                 (cd, insn, &ex_info, full_insn_value, &fields, pc);
 660             }
 661           else
 662             length = CGEN_EXTRACT_FN (cd, insn)
 663               (cd, insn, &ex_info, insn_value_cropped, &fields, pc);
 664
 665           /* Length < 0 -> error.  */
 666           if (length < 0)
 667             return length;
 668           if (length > 0)
 669             {
 670               CGEN_PRINT_FN (cd, insn) (cd, info, insn, &fields, pc, length);
 671               /* Length is in bits, result is in bytes.  */
 672               return length / 8;
 673             }
 674         }
 675
 676       insn_list = CGEN_DIS_NEXT_INSN (insn_list);
 677     }
 678
 679   return 0;
 680 }
 681
 682 /* Default value for CGEN_PRINT_INSN.
 683    The result is the size of the insn in bytes or zero for an unknown insn
 684    or -1 if an error occured fetching bytes.  */
 685
 686 #ifndef CGEN_PRINT_INSN
 687 #define CGEN_PRINT_INSN default_print_insn
 688 #endif
 689
 690 static int
 691 default_print_insn (CGEN_CPU_DESC cd, bfd_vma pc, disassemble_info *info)
 692 {
 693   bfd_byte buf[CGEN_MAX_INSN_SIZE];
 694   int buflen;
 695   int status;
 696
 697   /* Attempt to read the base part of the insn.  */
 698   buflen = cd->base_insn_bitsize / 8;
 699   status = (*info->read_memory_func) (pc, buf, buflen, info);
 700
 701   /* Try again with the minimum part, if min < base.  */
 702   if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
 703     {
 704       buflen = cd->min_insn_bitsize / 8;
 705       status = (*info->read_memory_func) (pc, buf, buflen, info);
 706     }
 707
 708   if (status != 0)
 709     {
 710       (*info->memory_error_func) (status, pc, info);
 711       return -1;
 712     }
 713
 714   return print_insn (cd, pc, info, buf, buflen);
 715 }
 716
 717 /* Main entry point.
 718    Print one instruction from PC on INFO->STREAM.
 719    Return the size of the instruction (in bytes).  */
 720
 721 typedef struct cpu_desc_list
 722 {
 723   struct cpu_desc_list *next;
 724   CGEN_BITSET *isa;
 725   int mach;
 726   int endian;
 727   CGEN_CPU_DESC cd;
 728 } cpu_desc_list;
 729
 730 int
 731 print_insn_xc16x (bfd_vma pc, disassemble_info *info)
 732 {
 733   static cpu_desc_list *cd_list = 0;
 734   cpu_desc_list *cl = 0;
 735   static CGEN_CPU_DESC cd = 0;
 736   static CGEN_BITSET *prev_isa;
 737   static int prev_mach;
 738   static int prev_endian;
 739   int length;
 740   CGEN_BITSET *isa;
 741   int mach;
 742   int endian = (info->endian == BFD_ENDIAN_BIG
 743                 ? CGEN_ENDIAN_BIG
 744                 : CGEN_ENDIAN_LITTLE);
 745   enum bfd_architecture arch;
 746
 747   /* ??? gdb will set mach but leave the architecture as "unknown" */
 748 #ifndef CGEN_BFD_ARCH
 749 #define CGEN_BFD_ARCH bfd_arch_xc16x
 750 #endif
 751   arch = info->arch;
 752   if (arch == bfd_arch_unknown)
 753     arch = CGEN_BFD_ARCH;
 754
 755   /* There's no standard way to compute the machine or isa number
 756      so we leave it to the target.  */
 757 #ifdef CGEN_COMPUTE_MACH
 758   mach = CGEN_COMPUTE_MACH (info);
 759 #else
 760   mach = info->mach;
 761 #endif
 762
 763 #ifdef CGEN_COMPUTE_ISA
 764   {
 765     static CGEN_BITSET *permanent_isa;
 766
 767     if (!permanent_isa)
 768       permanent_isa = cgen_bitset_create (MAX_ISAS);
 769     isa = permanent_isa;
 770     cgen_bitset_clear (isa);
 771     cgen_bitset_add (isa, CGEN_COMPUTE_ISA (info));
 772   }
 773 #else
 774   isa = info->private_data;
 775 #endif
 776
 777   /* If we've switched cpu's, try to find a handle we've used before */
 778   if (cd
 779       && (cgen_bitset_compare (isa, prev_isa) != 0
 780           || mach != prev_mach
 781           || endian != prev_endian))
 782     {
 783       cd = 0;
 784       for (cl = cd_list; cl; cl = cl->next)
 785         {
 786           if (cgen_bitset_compare (cl->isa, isa) == 0 &&
 787               cl->mach == mach &&
 788               cl->endian == endian)
 789             {
 790               cd = cl->cd;
 791               prev_isa = cd->isas;
 792               break;
 793             }
 794         }
 795     }
 796
 797   /* If we haven't initialized yet, initialize the opcode table.  */
 798   if (! cd)
 799     {
 800       const bfd_arch_info_type *arch_type = bfd_lookup_arch (arch, mach);
 801       const char *mach_name;
 802
 803       if (!arch_type)
 804         abort ();
 805       mach_name = arch_type->printable_name;
 806
 807       prev_isa = cgen_bitset_copy (isa);
 808       prev_mach = mach;
 809       prev_endian = endian;
 810       cd = xc16x_cgen_cpu_open (CGEN_CPU_OPEN_ISAS, prev_isa,
 811                                  CGEN_CPU_OPEN_BFDMACH, mach_name,
 812                                  CGEN_CPU_OPEN_ENDIAN, prev_endian,
 813                                  CGEN_CPU_OPEN_END);
 814       if (!cd)
 815         abort ();
 816
 817       /* Save this away for future reference.  */
 818       cl = xmalloc (sizeof (struct cpu_desc_list));
 819       cl->cd = cd;
 820       cl->isa = prev_isa;
 821       cl->mach = mach;
 822       cl->endian = endian;
 823       cl->next = cd_list;
 824       cd_list = cl;
 825
 826       xc16x_cgen_init_dis (cd);
 827     }
 828
 829   /* We try to have as much common code as possible.
 830      But at this point some targets need to take over.  */
 831   /* ??? Some targets may need a hook elsewhere.  Try to avoid this,
 832      but if not possible try to move this hook elsewhere rather than
 833      have two hooks.  */
 834   length = CGEN_PRINT_INSN (cd, pc, info);
 835   if (length > 0)
 836     return length;
 837   if (length < 0)
 838     return -1;
 839
 840   (*info->fprintf_func) (info->stream, UNKNOWN_INSN_MSG);
 841   return cd->default_insn_bitsize / 8;
 842 }