/**

  * $Id: mem.h,v 1.5 2005-12-25 08:24:07 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_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 );

 extern char **page_map;

 #ifdef __cplusplus

 }

 #endif

 #endif