119 lines
2.6 KiB
C
119 lines
2.6 KiB
C
/* Disassemble WDC 65816 instructions.
|
|
Copyright (C) 1995, 1998 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>
|
|
#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;
|
|
#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;
|
|
}
|
|
|
|
}
|