1 // memory map related stuff
3 typedef unsigned char u8;
4 typedef unsigned short u16;
5 typedef unsigned int u32;
7 #define M68K_MEM_SHIFT 16
8 // minimum size we can map
9 #define M68K_BANK_SIZE (1 << M68K_MEM_SHIFT)
10 #define M68K_BANK_MASK (M68K_BANK_SIZE - 1)
12 extern unsigned long m68k_read8_map [0x1000000 >> M68K_MEM_SHIFT];
13 extern unsigned long m68k_read16_map [0x1000000 >> M68K_MEM_SHIFT];
14 extern unsigned long m68k_write8_map [0x1000000 >> M68K_MEM_SHIFT];
15 extern unsigned long m68k_write16_map[0x1000000 >> M68K_MEM_SHIFT];
17 extern unsigned long s68k_read8_map [0x1000000 >> M68K_MEM_SHIFT];
18 extern unsigned long s68k_read16_map [0x1000000 >> M68K_MEM_SHIFT];
19 extern unsigned long s68k_write8_map [0x1000000 >> M68K_MEM_SHIFT];
20 extern unsigned long s68k_write16_map[0x1000000 >> M68K_MEM_SHIFT];
22 void z80_map_set(unsigned long *map, int start_addr, int end_addr,
23 void *func_or_mh, int is_func);
24 void cpu68k_map_set(unsigned long *map, int start_addr, int end_addr,
25 void *func_or_mh, int is_func);
26 void cpu68k_map_all_ram(int start_addr, int end_addr, void *ptr, int is_sub);
27 void m68k_map_unmap(int start_addr, int end_addr);
29 // top-level handlers that cores can use
30 // (or alternatively build them into themselves)
31 // XXX: unhandled: *16 and *32 might cross the bank boundaries
32 typedef u32 (cpu68k_read_f)(u32 a);
33 typedef void (cpu68k_write_f)(u32 a, u32 d);
35 #define MAKE_68K_READ8(name, map) \
40 v = map[a >> M68K_MEM_SHIFT]; \
42 return ((cpu68k_read_f *)(v << 1))(a); \
44 return *(u8 *)((v << 1) + (a ^ 1)); \
47 #define MAKE_68K_READ16(name, map) \
52 v = map[a >> M68K_MEM_SHIFT]; \
54 return ((cpu68k_read_f *)(v << 1))(a); \
56 return *(u16 *)((v << 1) + a); \
59 #define MAKE_68K_READ32(name, map) \
62 unsigned long v, vs; \
65 v = map[a >> M68K_MEM_SHIFT]; \
67 if (v & 0x80000000) { \
68 d = ((cpu68k_read_f *)vs)(a) << 16; \
69 d |= ((cpu68k_read_f *)vs)(a + 2); \
72 u16 *m = (u16 *)(vs + a); \
73 d = (m[0] << 16) | m[1]; \
78 #define MAKE_68K_WRITE8(name, map) \
79 void name(u32 a, u8 d) \
83 v = map[a >> M68K_MEM_SHIFT]; \
85 ((cpu68k_write_f *)(v << 1))(a, d); \
87 *(u8 *)((v << 1) + (a ^ 1)) = d; \
90 #define MAKE_68K_WRITE16(name, map) \
91 void name(u32 a, u16 d) \
95 v = map[a >> M68K_MEM_SHIFT]; \
97 ((cpu68k_write_f *)(v << 1))(a, d); \
99 *(u16 *)((v << 1) + a) = d; \
102 #define MAKE_68K_WRITE32(name, map) \
103 void name(u32 a, u32 d) \
105 unsigned long v, vs; \
107 v = map[a >> M68K_MEM_SHIFT]; \
109 if (v & 0x80000000) { \
110 ((cpu68k_write_f *)vs)(a, d >> 16); \
111 ((cpu68k_write_f *)vs)(a + 2, d); \
114 u16 *m = (u16 *)(vs + a); \