mapper.h

/*-
 * Copyright (c) 2016 Jared McNeill <jmcneill@invisible.ca>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _MAPPER_H
#define _MAPPER_H

#include <sys/types.h>
#include <stdint.h>

struct avnes_context;

struct mapper_context {
	uint8_t	(*cpuread)(struct avnes_context *, uint16_t);
	void	(*cpuwrite)(struct avnes_context *, uint16_t, uint8_t);
	uint8_t	(*ppuread)(struct avnes_context *, uint16_t);
	void	(*ppuwrite)(struct avnes_context *, uint16_t, uint8_t);
	void	*priv;
};

struct mapper_impl {
	const char	*descr;
	int		(*init)(struct mapper_context *, const uint8_t *, size_t);
};

#define	MAPPER_DECL(n, d, i)					\
	struct mapper_impl mapper_ ## n ## _impl = {		\
		.descr = (d),					\
		.init = (i)					\
	}

#define	MAPPER_IMPL(name)					\
	mapper_ ## name ## _impl

int	mapper_init(struct mapper_context *, const uint8_t *, size_t);

#endif /* !_MAPPER_H */