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