binutils-gdb/opcodes/w65-dis.c

119 lines
2.6 KiB
C
Raw Normal View History

1999-05-03 15:29:11 +08:00
/* Disassemble WDC 65816 instructions.
Copyright (C) 1995, 1998, 2000 Free Software Foundation, Inc.
1999-05-03 15:29:11 +08:00
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"
1999-05-03 15:29:11 +08:00
#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;
1999-05-03 15:29:11 +08:00
#if 0
static char *lname[] = { "r0","r1","r2","r3","r4","r5","r6","r7","s0" };
1999-05-03 15:29:11 +08:00
static char *
findname (val)
1999-05-03 15:29:11 +08:00
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;
1999-05-03 15:29:11 +08:00
{
int val;
int c;
while (*format)
{
switch (c = *format++)
1999-05-03 15:29:11 +08:00
{
case '$':
val = args[(*format++) - '0'];
if (lookup)
1999-05-03 15:29:11 +08:00
{
#if 0
name = findname (val);
1999-05-03 15:29:11 +08:00
if (name)
fpr (stream, "%s", name);
1999-05-03 15:29:11 +08:00
else
#endif
local_info->print_address_func (val, local_info);
1999-05-03 15:29:11 +08:00
}
else
fpr (stream, "0x%x", val);
break;
default:
fpr (stream, "%c", c);
1999-05-03 15:29:11 +08:00
break;
}
}
}
int
print_insn_w65 (memaddr, info)
1999-05-03 15:29:11 +08:00
bfd_vma memaddr;
struct disassemble_info *info;
{
int status = 0;
unsigned char insn[4];
register struct opinfo *op;
int i;
int X = 0;
1999-05-03 15:29:11 +08:00
int M = 0;
int args[2];
stream = info->stream;
1999-05-03 15:29:11 +08:00
fpr = info->fprintf_func;
local_info = info;
for (i = 0; i < 4 && status == 0; i++)
1999-05-03 15:29:11 +08:00
{
status = info->read_memory_func (memaddr + i, insn + i, 1, info);
}
1999-05-03 15:29:11 +08:00
for (op = optable; op->val != insn[0]; op++)
1999-05-03 15:29:11 +08:00
;
fpr (stream, "%s", op->name);
/* Prepare all the posible operand values. */
1999-05-03 15:29:11 +08:00
{
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;
1999-05-03 15:29:11 +08:00
switch (op->amode)
{
DISASM ();
}
1999-05-03 15:29:11 +08:00
return size;
1999-05-03 15:29:11 +08:00
}
}