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/*
* $Id: storage.c,v 1.8 2003/12/02 08:25:00 troth Exp $
*
****************************************************************************
*
* simulavr - A simulator for the Atmel AVR family of microcontrollers.
* Copyright (C) 2001, 2002, 2003 Theodore A. Roth
*
* 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 <config.h>
#include <stdio.h>
#include <stdlib.h>
#include "avrerror.h"
#include "avrmalloc.h"
#include "avrclass.h"
#include "storage.h"
/***************************************************************************\
*
* Storage(AvrClass) Methods
*
\***************************************************************************/
Storage *
storage_new (int base, int size)
{
Storage *stor;
stor = avr_new (Storage, 1);
storage_construct (stor, base, size);
class_overload_destroy ((AvrClass *)stor, storage_destroy);
return stor;
}
void
storage_construct (Storage *stor, int base, int size)
{
if (stor == NULL)
avr_error ("passed null ptr");
class_construct ((AvrClass *)stor);
stor->base = base; /* address */
stor->size = size; /* bytes */
stor->data = avr_new0 (uint8_t, size);
}
/*
* Not to be called directly, except by a derived class.
* Called via class_unref.
*/
void
storage_destroy (void *stor)
{
if (stor == NULL)
return;
avr_free (((Storage *)stor)->data);
class_destroy (stor);
}
extern inline uint8_t
storage_readb (Storage *stor, int addr);
extern inline uint16_t
storage_readw (Storage *stor, int addr);
void
storage_writeb (Storage *stor, int addr, uint8_t val)
{
int _addr = addr - stor->base;
if (stor == NULL)
avr_error ("passed null ptr");
if ((_addr < 0) || (_addr >= stor->size))
avr_error ("address out of bounds: 0x%x", addr);
stor->data[_addr] = val;
}
void
storage_writew (Storage *stor, int addr, uint16_t val)
{
int _addr = addr - stor->base;
if (stor == NULL)
avr_error ("passed null ptr");
if ((_addr < 0) || (_addr >= stor->size))
avr_error ("address out of bounds: 0x%x", addr);
stor->data[_addr] = (uint8_t) (val >> 8 & 0xff);
stor->data[_addr + 1] = (uint8_t) (val & 0xff);
}
int
storage_get_size (Storage *stor)
{
return stor->size;
}
int
storage_get_base (Storage *stor)
{
return stor->base;
}
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