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1.1 root 1: /*
2: * UAE - The Un*x Amiga Emulator
3: *
4: * memory management
5: *
6: * Copyright 1995 Bernd Schmidt
1.1.1.2 root 7: *
8: * Adaptation to Hatari by Thomas Huth
1.1.1.4 root 9: *
10: * This file is distributed under the GNU Public License, version 2 or at
11: * your option any later version. Read the file gpl.txt for details.
1.1 root 12: */
13:
1.1.1.3 root 14: #ifndef UAE_MEMORY_H
15: #define UAE_MEMORY_H
16:
17: #include "maccess.h"
1.1 root 18:
1.1.1.5 root 19: #define call_mem_get_func(func, addr) ((*func)(addr))
20: #define call_mem_put_func(func, addr, v) ((*func)(addr, v))
21:
1.1 root 22:
23: /* Enabling this adds one additional native memory reference per 68k memory
24: * access, but saves one shift (on the x86). Enabling this is probably
25: * better for the cache. My favourite benchmark (PP2) doesn't show a
26: * difference, so I leave this enabled. */
27: #if 1 || defined SAVE_MEMORY
28: #define SAVE_MEMORY_BANKS
29: #endif
30:
31:
32: typedef uae_u32 (*mem_get_func)(uaecptr) REGPARAM;
33: typedef void (*mem_put_func)(uaecptr, uae_u32) REGPARAM;
34: typedef uae_u8 *(*xlate_func)(uaecptr) REGPARAM;
35: typedef int (*check_func)(uaecptr, uae_u32) REGPARAM;
36:
37: extern char *address_space, *good_address_map;
38:
39:
40: typedef struct {
41: /* These ones should be self-explanatory... */
42: mem_get_func lget, wget, bget;
43: mem_put_func lput, wput, bput;
1.1.1.4 root 44: /* Use xlateaddr to translate an Atari address to a uae_u8 * that can
1.1 root 45: * be used to address memory without calling the wget/wput functions.
46: * This doesn't work for all memory banks, so this function may call
47: * abort(). */
48: xlate_func xlateaddr;
49: /* To prevent calls to abort(), use check before calling xlateaddr.
50: * It checks not only that the memory bank can do xlateaddr, but also
51: * that the pointer points to an area of at least the specified size.
52: * This is used for example to translate bitplane pointers in custom.c */
53: check_func check;
54: } addrbank;
55:
56:
57: #define bankindex(addr) (((uaecptr)(addr)) >> 16)
58:
59: #ifdef SAVE_MEMORY_BANKS
60: extern addrbank *mem_banks[65536];
61: #define get_mem_bank(addr) (*mem_banks[bankindex(addr)])
62: #define put_mem_bank(addr, b) (mem_banks[bankindex(addr)] = (b))
63: #else
64: extern addrbank mem_banks[65536];
65: #define get_mem_bank(addr) (mem_banks[bankindex(addr)])
66: #define put_mem_bank(addr, b) (mem_banks[bankindex(addr)] = *(b))
67: #endif
68:
1.1.1.6 ! root 69: extern void memory_init(uae_u32 nNewSTMemSize, uae_u32 nNewTTMemSize, uae_u32 nNewRomMemStart);
1.1.1.4 root 70: extern void memory_uninit (void);
1.1 root 71: extern void map_banks(addrbank *bank, int first, int count);
72:
73: #ifndef NO_INLINE_MEMORY_ACCESS
74:
75: #define longget(addr) (call_mem_get_func(get_mem_bank(addr).lget, addr))
76: #define wordget(addr) (call_mem_get_func(get_mem_bank(addr).wget, addr))
77: #define byteget(addr) (call_mem_get_func(get_mem_bank(addr).bget, addr))
78: #define longput(addr,l) (call_mem_put_func(get_mem_bank(addr).lput, addr, l))
79: #define wordput(addr,w) (call_mem_put_func(get_mem_bank(addr).wput, addr, w))
80: #define byteput(addr,b) (call_mem_put_func(get_mem_bank(addr).bput, addr, b))
81:
82: #else
83:
84: extern uae_u32 alongget(uaecptr addr);
85: extern uae_u32 awordget(uaecptr addr);
86: extern uae_u32 longget(uaecptr addr);
87: extern uae_u32 wordget(uaecptr addr);
88: extern uae_u32 byteget(uaecptr addr);
89: extern void longput(uaecptr addr, uae_u32 l);
90: extern void wordput(uaecptr addr, uae_u32 w);
91: extern void byteput(uaecptr addr, uae_u32 b);
92:
93: #endif
94:
95:
1.1.1.5 root 96: static inline uae_u32 get_long(uaecptr addr)
1.1 root 97: {
1.1.1.5 root 98: return longget(addr);
1.1 root 99: }
1.1.1.5 root 100:
101: static inline uae_u32 get_word(uaecptr addr)
1.1 root 102: {
1.1.1.5 root 103: return wordget(addr);
1.1 root 104: }
1.1.1.5 root 105:
106: static inline uae_u32 get_byte(uaecptr addr)
1.1 root 107: {
1.1.1.5 root 108: return byteget(addr);
1.1 root 109: }
1.1.1.5 root 110:
111: static inline void put_long(uaecptr addr, uae_u32 l)
1.1 root 112: {
1.1.1.5 root 113: longput(addr, l);
1.1 root 114: }
1.1.1.5 root 115:
116: static inline void put_word(uaecptr addr, uae_u32 w)
1.1 root 117: {
1.1.1.5 root 118: wordput(addr, w);
1.1 root 119: }
1.1.1.5 root 120:
121: static inline void put_byte(uaecptr addr, uae_u32 b)
1.1 root 122: {
1.1.1.5 root 123: byteput(addr, b);
1.1 root 124: }
125:
1.1.1.5 root 126: static inline uae_u8 *get_real_address(uaecptr addr)
1.1 root 127: {
128: return get_mem_bank(addr).xlateaddr(addr);
129: }
130:
1.1.1.5 root 131: static inline int valid_address(uaecptr addr, uae_u32 size)
1.1 root 132: {
133: return get_mem_bank(addr).check(addr, size);
134: }
135:
136:
1.1.1.3 root 137: #endif /* UAE_MEMORY_H */
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