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root/cebix/SheepShaver/src/include/cpu_emulation.h
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Comparing SheepShaver/src/include/cpu_emulation.h (file contents):
Revision 1.2 by gbeauche, 2003-09-07T14:33:54Z vs.
Revision 1.10 by cebix, 2004-01-12T15:37:23Z

# Line 1 | Line 1
1   /*
2   *  cpu_emulation.h - Definitions for CPU emulation and Mac memory access
3   *
4 < *  SheepShaver (C) 1997-2002 Christian Bauer and Marc Hellwig
4 > *  SheepShaver (C) 1997-2004 Christian Bauer and Marc Hellwig
5   *
6   *  This program is free software; you can redistribute it and/or modify
7   *  it under the terms of the GNU General Public License as published by
# Line 27 | Line 27
27   */
28  
29   // Constants
30 < const uint32 ROM_BASE = 0x40800000;                     // Base address of ROM
31 < const uint32 ROM_SIZE = 0x00400000;                     // Size of ROM file
32 < const uint32 DR_CACHE_BASE = 0x69000000;        // Address of DR cache
33 < const uint32 DR_CACHE_SIZE = 0x80000;           // Size of DR Cache
30 > const uintptr ROM_BASE = 0x40800000;                    // Base address of ROM
31 > const uint32  ROM_SIZE = 0x400000;                              // Size of ROM file
32 > const uint32  ROM_AREA_SIZE = 0x500000;                 // Size of ROM area
33 > const uintptr ROM_END = ROM_BASE + ROM_SIZE;    // End of ROM
34 > const uintptr DR_CACHE_BASE = 0x69000000;               // Address of DR cache
35 > const uint32  DR_CACHE_SIZE = 0x80000;                  // Size of DR Cache
36 >
37 > const uintptr KERNEL_DATA_BASE = 0x68ffe000;    // Address of Kernel Data
38 > const uintptr KERNEL_DATA2_BASE = 0x5fffe000;   // Alternate address of Kernel Data
39 > const uint32  KERNEL_AREA_SIZE = 0x2000;                // Size of Kernel Data area
40 >
41 > // MacOS 68k Emulator Data
42 > struct EmulatorData {
43 >        uint32  v[0x400];
44 > };
45 >
46 > // MacOS Kernel Data
47 > struct KernelData {
48 >        uint32  v[0x400];
49 >        EmulatorData ed;
50 > };
51  
52   // RAM and ROM pointers (allocated and set by main_*.cpp)
53   extern uint32 RAMBase;                  // Base address of Mac RAM
54   extern uint32 RAMSize;                  // Size address of Mac RAM
55  
56   // Mac memory access functions
57 + #if EMULATED_PPC
58 + #include "cpu/vm.hpp"
59 + static inline uint32 ReadMacInt8(uint32 addr) {return vm_read_memory_1(addr);}
60 + static inline void WriteMacInt8(uint32 addr, uint32 v) {vm_write_memory_1(addr, v);}
61 + static inline uint32 ReadMacInt16(uint32 addr) {return vm_read_memory_2(addr);}
62 + static inline void WriteMacInt16(uint32 addr, uint32 v) {vm_write_memory_2(addr, v);}
63 + static inline uint32 ReadMacInt32(uint32 addr) {return vm_read_memory_4(addr);}
64 + static inline void WriteMacInt32(uint32 addr, uint32 v) {vm_write_memory_4(addr, v);}
65 + static inline uint64 ReadMacInt64(uint32 addr) {return vm_read_memory_8(addr);}
66 + static inline void WriteMacInt64(uint32 addr, uint64 v) {vm_write_memory_8(addr, v);}
67 + static inline uint8 *Mac2HostAddr(uint32 addr) {return vm_do_get_real_address(addr);}
68 + static inline void *Mac_memset(uint32 addr, int c, size_t n) {return vm_memset(addr, c, n);}
69 + static inline void *Mac2Host_memcpy(void *dest, uint32 src, size_t n) {return vm_memcpy(dest, src, n);}
70 + static inline void *Host2Mac_memcpy(uint32 dest, const void *src, size_t n) {return vm_memcpy(dest, src, n);}
71 + static inline void *Mac2Mac_memcpy(uint32 dest, uint32 src, size_t n) {return vm_memcpy(dest, src, n);}
72 + #else
73   static inline uint32 ReadMacInt8(uint32 addr) {return *(uint8 *)addr;}
74   static inline void WriteMacInt8(uint32 addr, uint32 b) {*(uint8 *)addr = b;}
42 #ifdef __i386__
43 static inline uint32 ReadMacInt16(uint32 addr) {uint32 retval; __asm__ ("movzwl %w1,%k0\n\tshll $16,%k0\n\tbswapl %k0\n" : "=&r" (retval) : "m" (*(uint16 *)addr) : "cc"); return retval;}
44 static inline uint32 ReadMacInt32(uint32 addr) {uint32 retval; __asm__ ("bswap %0" : "=r" (retval) : "0" (*(uint32 *)addr) : "cc"); return retval;}
45 static inline uint64 ReadMacInt64(uint32 addr) {return ((uint64)ReadMacInt32(addr) << 32) | ReadMacInt32(addr + 4);}
46 static inline void WriteMacInt16(uint32 addr, uint32 w) {__asm__ ("bswapl %0" : "=&r" (w) : "0" (w << 16) : "cc"); *(uint16 *)addr = w;}
47 static inline void WriteMacInt32(uint32 addr, uint32 l) {__asm__ ("bswap %0" : "=r" (l) : "0" (l) : "cc"); *(uint32 *)addr = l;}
48 static inline void WriteMacInt64(uint32 addr, uint64 ll) {WriteMacInt32(addr, ll >> 32); WriteMacInt32(addr, ll);}
49 #else
75   static inline uint32 ReadMacInt16(uint32 addr) {return *(uint16 *)addr;}
76   static inline uint32 ReadMacInt32(uint32 addr) {return *(uint32 *)addr;}
77   static inline uint64 ReadMacInt64(uint32 addr) {return *(uint64 *)addr;}
78   static inline void WriteMacInt16(uint32 addr, uint32 w) {*(uint16 *)addr = w;}
79   static inline void WriteMacInt32(uint32 addr, uint32 l) {*(uint32 *)addr = l;}
80   static inline void WriteMacInt64(uint32 addr, uint64 ll) {*(uint64 *)addr = ll;}
56 #endif
81   static inline uint8 *Mac2HostAddr(uint32 addr) {return (uint8 *)addr;}
82   static inline void *Mac_memset(uint32 addr, int c, size_t n) {return memset(Mac2HostAddr(addr), c, n);}
83   static inline void *Mac2Host_memcpy(void *dest, uint32 src, size_t n) {return memcpy(dest, Mac2HostAddr(src), n);}
84   static inline void *Host2Mac_memcpy(uint32 dest, const void *src, size_t n) {return memcpy(Mac2HostAddr(dest), src, n);}
85   static inline void *Mac2Mac_memcpy(uint32 dest, uint32 src, size_t n) {return memcpy(Mac2HostAddr(dest), Mac2HostAddr(src), n);}
86 + #endif
87  
88  
89   /*
90   *  680x0 and PPC emulation
91   */
92  
93 + // 68k procedure helper to write a big endian 16-bit word
94 + #ifdef WORDS_BIGENDIAN
95 + #define PW(W) W
96 + #else
97 + #define PW(X) ((((X) >> 8) & 0xff) | (((X) & 0xff) << 8))
98 + #endif
99 +
100   struct M68kRegisters;
101   extern void Execute68k(uint32, M68kRegisters *r);                       // Execute 68k subroutine from EMUL_OP routine, must be ended with RTS
102   extern void Execute68kTrap(uint16 trap, M68kRegisters *r);      // Execute 68k A-Trap from EMUL_OP routine
103   #if EMULATED_PPC
104 < extern void HandleInterrupt(void);
73 < extern void ExecuteNative(int selector);                                        // Execute native code from EMUL_OP routine (real mode switch)
74 < #else
75 < extern void ExecutePPC(void (*func)(void));                                     // Execute PPC code from EMUL_OP routine (real mode switch)
104 > extern void FlushCodeCache(uintptr start, uintptr end);         // Invalidate emulator caches
105   #endif
106 + extern void ExecuteNative(int selector);                                        // Execute native code from EMUL_OP routine (real mode switch)
107  
108   #endif

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