119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
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/* Disassemble WDC 65816 instructions.
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Copyright (C) 1995 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#define STATIC_TABLE
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#define DEFINE_TABLE
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#include "w65-opc.h"
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#include "dis-asm.h"
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static fprintf_ftype fpr;
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static void *stream;
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static struct disassemble_info *local_info;
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#if 0
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static char *lname[] = {"r0","r1","r2","r3","r4","r5","r6","r7","s0"};
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static char *findname (val)
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unsigned int val;
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{
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if (val >= 0x10 && val <= 0x20)
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return lname[(val - 0x10) / 2];
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return 0;
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}
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#endif
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static void
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print_operand (lookup, format, args)
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int lookup;
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char *format;
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unsigned int *args;
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{
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int val;
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int c;
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char *name;
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while (*format)
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{
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switch ( c = *format++)
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{
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case '$':
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val = args[(*format++) - '0'];
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if (lookup)
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{
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#if 0
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name = findname(val);
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if (name)
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fpr(stream, "%s", name);
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else
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#endif
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local_info->print_address_func (val, local_info);
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}
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else
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fpr (stream, "0x%x", val);
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break;
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default:
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fpr(stream,"%c", c);
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break;
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}
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}
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}
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int
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print_insn_w65(memaddr, info)
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bfd_vma memaddr;
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struct disassemble_info *info;
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{
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int status = 0;
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unsigned char insn[4];
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register struct opinfo *op;
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int i;
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int X =0;
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int M = 0;
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int args[2];
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stream = info->stream;
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fpr = info->fprintf_func;
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local_info = info;
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for (i = 0; i <4 && status == 0; i++)
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{
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status = info->read_memory_func(memaddr+i, insn + i, 1, info);
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}
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for (op = optable; op->val != insn[0]; op++)
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;
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fpr(stream,"%s", op->name);
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/* Prepare all the posible operand values */
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{
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int size = 1;
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int asR_W65_ABS8 = insn[1];
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int asR_W65_ABS16 = (insn[2] << 8) + asR_W65_ABS8;
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int asR_W65_ABS24 = (insn[3] << 16) + asR_W65_ABS16;
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int asR_W65_PCR8 = ((char)(asR_W65_ABS8)) + memaddr + 2;
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int asR_W65_PCR16 = ((short)(asR_W65_ABS16)) + memaddr + 3;
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switch (op->amode) {
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DISASM();
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}
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return size;
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}
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}
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