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1.1.1.3 root 1: /*
1.1 root 2: * UAE - The Un*x Amiga Emulator
1.1.1.3 root 3: *
1.1 root 4: * memory management
1.1.1.3 root 5: *
1.1 root 6: * Copyright 1995 Bernd Schmidt
7: */
8:
1.1.1.3 root 9: /* Enabling this adds one additional native memory reference per 68k memory
10: * access, but saves one shift (on the x86). Enabling this is probably
11: * better for the cache. My favourite benchmark (PP2) doesn't show a
12: * difference, so I leave this enabled. */
13:
14: #if 1 || defined SAVE_MEMORY
15: #define SAVE_MEMORY_BANKS
16: #endif
17:
18: typedef uae_u32 (*mem_get_func)(uaecptr) REGPARAM;
19: typedef void (*mem_put_func)(uaecptr, uae_u32) REGPARAM;
20: typedef uae_u8 *(*xlate_func)(uaecptr) REGPARAM;
21: typedef int (*check_func)(uaecptr, uae_u32) REGPARAM;
1.1.1.2 root 22:
23: extern char *address_space, *good_address_map;
1.1.1.3 root 24: extern uae_u8 *chipmemory;
1.1.1.2 root 25:
1.1.1.4 root 26: extern uae_u32 allocated_chipmem;
27: extern uae_u32 allocated_fastmem;
28: extern uae_u32 allocated_bogomem;
29: extern uae_u32 allocated_gfxmem;
30: extern uae_u32 allocated_z3fastmem;
31: extern uae_u32 allocated_a3000mem;
32:
1.1.1.2 root 33: #undef DIRECT_MEMFUNCS_SUCCESSFUL
1.1.1.4 root 34: #include "machdep/maccess.h"
1.1.1.2 root 35:
36: #ifndef CAN_MAP_MEMORY
37: #undef USE_COMPILER
38: #endif
39:
40: #if defined(USE_COMPILER) && !defined(USE_MAPPED_MEMORY)
41: #define USE_MAPPED_MEMORY
42: #endif
43:
1.1 root 44: #define kickmem_size 0x080000
45:
1.1.1.3 root 46: #define chipmem_start 0x00000000
47: #define bogomem_start 0x00C00000
48: #define a3000mem_start 0x07000000
49: #define kickmem_start 0x00F80000
1.1 root 50:
51: extern int ersatzkickfile;
52:
53: typedef struct {
54: /* These ones should be self-explanatory... */
1.1.1.3 root 55: mem_get_func lget, wget, bget;
1.1.1.2 root 56: mem_put_func lput, wput, bput;
1.1.1.3 root 57: /* Use xlateaddr to translate an Amiga address to a uae_u8 * that can
58: * be used to address memory without calling the wget/wput functions.
1.1 root 59: * This doesn't work for all memory banks, so this function may call
60: * abort(). */
61: xlate_func xlateaddr;
62: /* To prevent calls to abort(), use check before calling xlateaddr.
63: * It checks not only that the memory bank can do xlateaddr, but also
1.1.1.3 root 64: * that the pointer points to an area of at least the specified size.
1.1 root 65: * This is used for example to translate bitplane pointers in custom.c */
66: check_func check;
67: } addrbank;
68:
1.1.1.3 root 69: extern uae_u8 filesysory[65536];
70:
1.1 root 71: extern addrbank chipmem_bank;
72: extern addrbank kickmem_bank;
73: extern addrbank custom_bank;
74: extern addrbank clock_bank;
75: extern addrbank cia_bank;
76: extern addrbank rtarea_bank;
77: extern addrbank expamem_bank;
78: extern addrbank fastmem_bank;
1.1.1.3 root 79: extern addrbank gfxmem_bank;
1.1 root 80:
81: extern void rtarea_init (void);
1.1.1.2 root 82: extern void rtarea_setup (void);
1.1 root 83: extern void expamem_init (void);
84: extern void expamem_reset (void);
85:
1.1.1.3 root 86: extern uae_u32 gfxmem_start;
87: extern uae_u8 *gfxmemory;
88: extern uae_u32 gfxmem_mask;
89: extern int address_space_24;
1.1 root 90:
91: /* Default memory access functions */
92:
1.1.1.3 root 93: extern int default_check(uaecptr addr, uae_u32 size) REGPARAM;
94: extern uae_u8 *default_xlate(uaecptr addr) REGPARAM;
1.1 root 95:
1.1.1.3 root 96: #define bankindex(addr) (((uaecptr)(addr)) >> 16)
1.1 root 97:
1.1.1.3 root 98: #ifdef SAVE_MEMORY_BANKS
99: extern addrbank *mem_banks[65536];
100: #define get_mem_bank(addr) (*mem_banks[bankindex(addr)])
101: #define put_mem_bank(addr, b) (mem_banks[bankindex(addr)] = (b))
1.1 root 102: #else
1.1.1.3 root 103: extern addrbank mem_banks[65536];
104: #define get_mem_bank(addr) (mem_banks[bankindex(addr)])
105: #define put_mem_bank(addr, b) (mem_banks[bankindex(addr)] = *(b))
1.1 root 106: #endif
1.1.1.3 root 107:
108: extern void memory_init(void);
1.1 root 109: extern void map_banks(addrbank *bank, int first, int count);
1.1.1.2 root 110:
111: #ifndef NO_INLINE_MEMORY_ACCESS
112:
1.1.1.3 root 113: #define longget(addr) (call_mem_get_func(get_mem_bank(addr).lget, addr))
114: #define wordget(addr) (call_mem_get_func(get_mem_bank(addr).wget, addr))
115: #define byteget(addr) (call_mem_get_func(get_mem_bank(addr).bget, addr))
116: #define longput(addr,l) (call_mem_put_func(get_mem_bank(addr).lput, addr, l))
117: #define wordput(addr,w) (call_mem_put_func(get_mem_bank(addr).wput, addr, w))
118: #define byteput(addr,b) (call_mem_put_func(get_mem_bank(addr).bput, addr, b))
1.1.1.2 root 119:
120: #else
121:
1.1.1.3 root 122: extern uae_u32 alongget(uaecptr addr);
123: extern uae_u32 awordget(uaecptr addr);
124: extern uae_u32 longget(uaecptr addr);
125: extern uae_u32 wordget(uaecptr addr);
126: extern uae_u32 byteget(uaecptr addr);
127: extern void longput(uaecptr addr, uae_u32 l);
128: extern void wordput(uaecptr addr, uae_u32 w);
129: extern void byteput(uaecptr addr, uae_u32 b);
1.1.1.2 root 130:
131: #endif
132:
133: #ifndef MD_HAVE_MEM_1_FUNCS
134:
135: #define longget_1 longget
136: #define wordget_1 wordget
137: #define byteget_1 byteget
138: #define longput_1 longput
139: #define wordput_1 wordput
140: #define byteput_1 byteput
141:
142: #endif
143:
1.1.1.5 root 144: STATIC_INLINE uae_u32 get_long(uaecptr addr)
1.1 root 145: {
1.1.1.3 root 146: return longget_1(addr);
1.1 root 147: }
1.1.1.5 root 148: STATIC_INLINE uae_u32 get_word(uaecptr addr)
1.1 root 149: {
1.1.1.3 root 150: return wordget_1(addr);
1.1 root 151: }
1.1.1.5 root 152: STATIC_INLINE uae_u32 get_byte(uaecptr addr)
1.1 root 153: {
1.1.1.3 root 154: return byteget_1(addr);
1.1 root 155: }
1.1.1.5 root 156: STATIC_INLINE void put_long(uaecptr addr, uae_u32 l)
1.1 root 157: {
1.1.1.2 root 158: longput_1(addr, l);
1.1 root 159: }
1.1.1.5 root 160: STATIC_INLINE void put_word(uaecptr addr, uae_u32 w)
1.1 root 161: {
1.1.1.2 root 162: wordput_1(addr, w);
1.1 root 163: }
1.1.1.5 root 164: STATIC_INLINE void put_byte(uaecptr addr, uae_u32 b)
1.1 root 165: {
1.1.1.2 root 166: byteput_1(addr, b);
1.1 root 167: }
168:
1.1.1.5 root 169: STATIC_INLINE uae_u8 *get_real_address(uaecptr addr)
1.1 root 170: {
1.1.1.3 root 171: return get_mem_bank(addr).xlateaddr(addr);
1.1 root 172: }
173:
1.1.1.5 root 174: STATIC_INLINE int valid_address(uaecptr addr, uae_u32 size)
1.1 root 175: {
1.1.1.3 root 176: return get_mem_bank(addr).check(addr, size);
1.1 root 177: }
1.1.1.6 ! root 178:
! 179: /* For faster access in custom chip emulation. */
! 180: extern uae_u32 chipmem_lget (uaecptr) REGPARAM;
! 181: extern uae_u32 chipmem_wget (uaecptr) REGPARAM;
! 182: extern uae_u32 chipmem_bget (uaecptr) REGPARAM;
! 183: extern void chipmem_lput (uaecptr, uae_u32) REGPARAM;
! 184: extern void chipmem_wput (uaecptr, uae_u32) REGPARAM;
! 185: extern void chipmem_bput (uaecptr, uae_u32) REGPARAM;
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