/**

 * $Id: mem.h,v 1.7 2006-03-13 12:37:06 nkeynes Exp $

 *

 * mem is responsible for creating and maintaining the overall system memory

 * map, as visible from the SH4 processor. (Note the ARM has a different map)

 *

 * Copyright (c) 2005 Nathan Keynes.

 *

 * 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.

 */

#ifndef dream_mem_H

#define dream_mem_H

#include <stdint.h>

#ifdef __cplusplus

extern "C" {

#endif

typedef struct mem_region {

    uint32_t base;

    uint32_t size;

    char *name;

    char *mem;

    int flags;

} *mem_region_t;

#define MAX_IO_REGIONS 24

#define MAX_MEM_REGIONS 8

#define MEM_REGION_MAIN "System RAM"

#define MEM_REGION_VIDEO "Video RAM"

#define MEM_REGION_AUDIO "Audio RAM"

#define MEM_REGION_AUDIO_SCRATCH "Audio Scratch RAM"

#define MB * (1024 * 1024)

#define KB * 1024

void *mem_create_ram_region( uint32_t base, uint32_t size, char *name );

void *mem_load_rom( char *name, uint32_t base, uint32_t size, uint32_t crc );

void *mem_alloc_pages( int n );

char *mem_get_region( uint32_t addr );

char *mem_get_region_by_name( char *name );

int mem_has_page( uint32_t addr );

char *mem_get_page( uint32_t addr );

void mem_init( void );

void mem_reset( void );

#define ENABLE_DEBUG_MODE 1

struct breakpoint_struct {

    uint32_t address;

    int type;

};

#define MAX_BREAKPOINTS 32

#define BREAK_NONE 0

#define BREAK_ONESHOT 1

#define BREAK_KEEP 2

#define ENABLE_WATCH 1

#define WATCH_WRITE 1

#define WATCH_READ  2

#define WATCH_EXEC  3  /* AKA Breakpoint :) */

#define MEM_FLAG_ROM 4 /* Mem region is ROM-based */

#define MEM_FLAG_RAM 6 

typedef struct watch_point *watch_point_t;

watch_point_t mem_new_watch( uint32_t start, uint32_t end, int flags );

void mem_delete_watch( watch_point_t watch );

watch_point_t mem_is_watched( uint32_t addr, int size, int op );

typedef uint32_t sh4addr_t;

extern char **page_map;

#ifdef __cplusplus

}

#endif

#endif