nkeynes@31 | 1 | /**
|
nkeynes@586 | 2 | * $Id$
|
nkeynes@31 | 3 | *
|
nkeynes@31 | 4 | * mem is responsible for creating and maintaining the overall system memory
|
nkeynes@31 | 5 | * map, as visible from the SH4 processor. (Note the ARM has a different map)
|
nkeynes@31 | 6 | *
|
nkeynes@31 | 7 | * Copyright (c) 2005 Nathan Keynes.
|
nkeynes@31 | 8 | *
|
nkeynes@31 | 9 | * This program is free software; you can redistribute it and/or modify
|
nkeynes@31 | 10 | * it under the terms of the GNU General Public License as published by
|
nkeynes@31 | 11 | * the Free Software Foundation; either version 2 of the License, or
|
nkeynes@31 | 12 | * (at your option) any later version.
|
nkeynes@31 | 13 | *
|
nkeynes@31 | 14 | * This program is distributed in the hope that it will be useful,
|
nkeynes@31 | 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
nkeynes@31 | 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
nkeynes@31 | 17 | * GNU General Public License for more details.
|
nkeynes@31 | 18 | */
|
nkeynes@31 | 19 |
|
nkeynes@736 | 20 | #ifndef lxdream_mem_H
|
nkeynes@736 | 21 | #define lxdream_mem_H 1
|
nkeynes@10 | 22 |
|
nkeynes@10 | 23 | #include <stdint.h>
|
nkeynes@477 | 24 | #include "lxdream.h"
|
nkeynes@10 | 25 |
|
nkeynes@10 | 26 | #ifdef __cplusplus
|
nkeynes@10 | 27 | extern "C" {
|
nkeynes@10 | 28 | #endif
|
nkeynes@10 | 29 |
|
nkeynes@929 | 30 | typedef struct mem_region_fn {
|
nkeynes@929 | 31 | FASTCALL int32_t (*read_long)(sh4addr_t addr);
|
nkeynes@929 | 32 | FASTCALL void (*write_long)(sh4addr_t addr, uint32_t val);
|
nkeynes@929 | 33 | FASTCALL int32_t (*read_word)(sh4addr_t addr);
|
nkeynes@929 | 34 | FASTCALL void (*write_word)(sh4addr_t addr, uint32_t val);
|
nkeynes@929 | 35 | FASTCALL int32_t (*read_byte)(sh4addr_t addr);
|
nkeynes@929 | 36 | FASTCALL void (*write_byte)(sh4addr_t addr, uint32_t val);
|
nkeynes@929 | 37 | FASTCALL void (*read_burst)(unsigned char *dest, sh4addr_t addr);
|
nkeynes@929 | 38 | FASTCALL void (*write_burst)(sh4addr_t addr, unsigned char *src);
|
nkeynes@929 | 39 | } *mem_region_fn_t;
|
nkeynes@929 | 40 |
|
nkeynes@10 | 41 | typedef struct mem_region {
|
nkeynes@10 | 42 | uint32_t base;
|
nkeynes@10 | 43 | uint32_t size;
|
nkeynes@422 | 44 | const char *name;
|
nkeynes@502 | 45 | sh4ptr_t mem;
|
nkeynes@510 | 46 | uint32_t flags;
|
nkeynes@929 | 47 | mem_region_fn_t fn;
|
nkeynes@10 | 48 | } *mem_region_t;
|
nkeynes@10 | 49 |
|
nkeynes@10 | 50 | #define MAX_IO_REGIONS 24
|
nkeynes@10 | 51 | #define MAX_MEM_REGIONS 8
|
nkeynes@10 | 52 |
|
nkeynes@180 | 53 | #define MEM_REGION_BIOS "Bios ROM"
|
nkeynes@10 | 54 | #define MEM_REGION_MAIN "System RAM"
|
nkeynes@10 | 55 | #define MEM_REGION_VIDEO "Video RAM"
|
nkeynes@10 | 56 | #define MEM_REGION_AUDIO "Audio RAM"
|
nkeynes@10 | 57 | #define MEM_REGION_AUDIO_SCRATCH "Audio Scratch RAM"
|
nkeynes@146 | 58 | #define MEM_REGION_FLASH "System Flash"
|
nkeynes@10 | 59 |
|
nkeynes@929 | 60 | void *mem_create_ram_region( uint32_t base, uint32_t size, const char *name, mem_region_fn_t fn );
|
nkeynes@929 | 61 | void *mem_create_repeating_ram_region( uint32_t base, uint32_t size, const char *name, mem_region_fn_t fn,
|
nkeynes@146 | 62 | uint32_t repeat_offset, uint32_t last_repeat );
|
nkeynes@543 | 63 | /**
|
nkeynes@543 | 64 | * Load a ROM image from the specified filename. If the memory region has not
|
nkeynes@543 | 65 | * been allocated, it is created now, otherwise the existing region is reused.
|
nkeynes@543 | 66 | * If the CRC check fails, a warning will be printed.
|
nkeynes@543 | 67 | * @return TRUE if the image was loaded successfully (irrespective of CRC failure).
|
nkeynes@543 | 68 | */
|
nkeynes@543 | 69 | gboolean mem_load_rom( const gchar *filename, uint32_t base, uint32_t size,
|
nkeynes@929 | 70 | uint32_t crc, const gchar *region_name, mem_region_fn_t fn );
|
nkeynes@19 | 71 | void *mem_alloc_pages( int n );
|
nkeynes@502 | 72 | sh4ptr_t mem_get_region( uint32_t addr );
|
nkeynes@502 | 73 | sh4ptr_t mem_get_region_by_name( const char *name );
|
nkeynes@10 | 74 | int mem_has_page( uint32_t addr );
|
nkeynes@502 | 75 | sh4ptr_t mem_get_page( uint32_t addr );
|
nkeynes@146 | 76 | int mem_load_block( const gchar *filename, uint32_t base, uint32_t size );
|
nkeynes@146 | 77 | int mem_save_block( const gchar *filename, uint32_t base, uint32_t size );
|
nkeynes@586 | 78 | void mem_set_trace( const gchar *tracelist, int flag );
|
nkeynes@10 | 79 | void mem_init( void );
|
nkeynes@10 | 80 | void mem_reset( void );
|
nkeynes@912 | 81 | void mem_copy_from_sh4( sh4ptr_t dest, sh4addr_t src, size_t count );
|
nkeynes@912 | 82 | void mem_copy_to_sh4( sh4addr_t dest, sh4ptr_t src, size_t count );
|
nkeynes@10 | 83 |
|
nkeynes@669 | 84 | /**
|
nkeynes@669 | 85 | * Write a long value directly to SH4-addressable memory.
|
nkeynes@669 | 86 | * @param dest a valid, writable physical memory address, relative to the SH4
|
nkeynes@669 | 87 | * @param value the value to write.
|
nkeynes@669 | 88 | */
|
nkeynes@669 | 89 | void mem_write_long( sh4addr_t dest, uint32_t value );
|
nkeynes@669 | 90 |
|
nkeynes@43 | 91 | #define ENABLE_DEBUG_MODE 1
|
nkeynes@43 | 92 |
|
nkeynes@586 | 93 | typedef enum { BREAK_NONE=0, BREAK_ONESHOT=1, BREAK_KEEP=2 } breakpoint_type_t;
|
nkeynes@586 | 94 |
|
nkeynes@43 | 95 | struct breakpoint_struct {
|
nkeynes@43 | 96 | uint32_t address;
|
nkeynes@586 | 97 | breakpoint_type_t type;
|
nkeynes@43 | 98 | };
|
nkeynes@43 | 99 |
|
nkeynes@43 | 100 | #define MAX_BREAKPOINTS 32
|
nkeynes@43 | 101 |
|
nkeynes@586 | 102 |
|
nkeynes@586 | 103 | #define MEM_FLAG_ROM 4 /* Mem region is ROM-based */
|
nkeynes@586 | 104 | #define MEM_FLAG_RAM 6
|
nkeynes@10 | 105 |
|
nkeynes@10 | 106 | #define WATCH_WRITE 1
|
nkeynes@10 | 107 | #define WATCH_READ 2
|
nkeynes@10 | 108 | #define WATCH_EXEC 3 /* AKA Breakpoint :) */
|
nkeynes@10 | 109 |
|
nkeynes@10 | 110 | typedef struct watch_point *watch_point_t;
|
nkeynes@10 | 111 |
|
nkeynes@10 | 112 | watch_point_t mem_new_watch( uint32_t start, uint32_t end, int flags );
|
nkeynes@10 | 113 | void mem_delete_watch( watch_point_t watch );
|
nkeynes@10 | 114 | watch_point_t mem_is_watched( uint32_t addr, int size, int op );
|
nkeynes@10 | 115 |
|
nkeynes@502 | 116 | extern sh4ptr_t *page_map;
|
nkeynes@736 | 117 |
|
nkeynes@10 | 118 | #ifdef __cplusplus
|
nkeynes@10 | 119 | }
|
nkeynes@10 | 120 | #endif
|
nkeynes@736 | 121 |
|
nkeynes@736 | 122 | #endif /* !lxdream_mem_H */
|