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/* Disassemble WDC 65816 instructions.

   Copyright 1995, 1998, 2000, 2001 Free Software Foundation, Inc.

This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2 of the License, or

(at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software

Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

#include <stdio.h>

#include "sysdep.h"

#define STATIC_TABLE

#define DEFINE_TABLE

#include "w65-opc.h"

#include "dis-asm.h"

static fprintf_ftype fpr;

static void *stream;

static struct disassemble_info *local_info;

static void print_operand PARAMS ((int, char *, unsigned int *));

#if 0

static char *lname[] = { "r0","r1","r2","r3","r4","r5","r6","r7","s0" };

static char *

findname (val)

     unsigned int val;

{

  if (val >= 0x10 && val <= 0x20)

    return lname[(val - 0x10) / 2];

  return 0;

}

#endif

static void

print_operand (lookup, format, args)

     int lookup;

     char *format;

     unsigned int *args;

{

  int val;

  int c;

  while (*format)

    {

      switch (c = *format++)

        {

        case '$':

          val = args[(*format++) - '0'];

          if (lookup)

            {

#if 0

              name = findname (val);

              if (name)

                fpr (stream, "%s", name);

              else

#endif

                local_info->print_address_func (val, local_info);

            }

          else

            fpr (stream, "0x%x", val);

          break;

        default:

          fpr (stream, "%c", c);

          break;

        }

    }

}

int

print_insn_w65 (memaddr, info)

     bfd_vma memaddr;

     struct disassemble_info *info;

{

  int status = 0;

  unsigned char insn[4];

  register struct opinfo *op;

  int i;

  int X = 0;

  int M = 0;

  int args[2];

  stream = info->stream;

  fpr = info->fprintf_func;

  local_info = info;

  for (i = 0; i < 4 && status == 0; i++)

    {

      status = info->read_memory_func (memaddr + i, insn + i, 1, info);

    }

  for (op = optable; op->val != insn[0]; op++)

    ;

  fpr (stream, "%s", op->name);

  /* Prepare all the posible operand values.  */

  {

    int size = 1;

    int asR_W65_ABS8 = insn[1];

    int asR_W65_ABS16 = (insn[2] << 8) + asR_W65_ABS8;

    int asR_W65_ABS24 = (insn[3] << 16) + asR_W65_ABS16;

    int asR_W65_PCR8 = ((char) (asR_W65_ABS8)) + memaddr + 2;

    int asR_W65_PCR16 = ((short) (asR_W65_ABS16)) + memaddr + 3;

    switch (op->amode)

      {

        DISASM ();

      }

    return size;

  }

}