| /* |
| * cpu_emulation.h - Definitions for Basilisk II CPU emulation module (UAE 0.8.10 version) |
| * |
| * Basilisk II (C) 1997-2008 Christian Bauer |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| |
| #ifndef CPU_EMULATION_H |
| #define CPU_EMULATION_H |
| |
| #include <string.h> |
| |
| |
| /* |
| * Memory system |
| */ |
| |
| // RAM and ROM pointers (allocated and set by main_*.cpp) |
| extern uint32 RAMBaseMac; // RAM base (Mac address space), does not include Low Mem when != 0 |
| extern uint8 *RAMBaseHost; // RAM base (host address space) |
| extern uint32 RAMSize; // Size of RAM |
| |
| extern uint32 ROMBaseMac; // ROM base (Mac address space) |
| extern uint8 *ROMBaseHost; // ROM base (host address space) |
| extern uint32 ROMSize; // Size of ROM |
| |
| #if !REAL_ADDRESSING && !DIRECT_ADDRESSING |
| // If we are not using real or direct addressing, the Mac frame buffer gets |
| // mapped to this location. The memory must be allocated by VideoInit(). |
| // If multiple monitors are used, they must share the frame buffer |
| const uint32 MacFrameBaseMac = 0xa0000000; |
| extern uint8 *MacFrameBaseHost; // Frame buffer base (host address space) |
| extern uint32 MacFrameSize; // Size of frame buffer |
| #endif |
| extern int MacFrameLayout; // Frame buffer layout (see defines below) |
| |
| // Possible frame buffer layouts |
| enum { |
| FLAYOUT_NONE, // No frame buffer |
| FLAYOUT_DIRECT, // Frame buffer is in MacOS layout, no conversion needed |
| FLAYOUT_HOST_555, // 16 bit, RGB 555, host byte order |
| FLAYOUT_HOST_565, // 16 bit, RGB 565, host byte order |
| FLAYOUT_HOST_888 // 32 bit, RGB 888, host byte order |
| }; |
| |
| // Mac memory access functions |
| #include "memory.h" |
| static inline uint32 ReadMacInt32(uint32 addr) {return get_long(addr);} |
| static inline uint32 ReadMacInt16(uint32 addr) {return get_word(addr);} |
| static inline uint32 ReadMacInt8(uint32 addr) {return get_byte(addr);} |
| static inline void WriteMacInt32(uint32 addr, uint32 l) {put_long(addr, l);} |
| static inline void WriteMacInt16(uint32 addr, uint32 w) {put_word(addr, w);} |
| static inline void WriteMacInt8(uint32 addr, uint32 b) {put_byte(addr, b);} |
| static inline uint8 *Mac2HostAddr(uint32 addr) {return get_real_address(addr);} |
| static inline uint32 Host2MacAddr(uint8 *addr) {return get_virtual_address(addr);} |
| |
| static inline void *Mac_memset(uint32 addr, int c, size_t n) {return memset(Mac2HostAddr(addr), c, n);} |
| static inline void *Mac2Host_memcpy(void *dest, uint32 src, size_t n) {return memcpy(dest, Mac2HostAddr(src), n);} |
| static inline void *Host2Mac_memcpy(uint32 dest, const void *src, size_t n) {return memcpy(Mac2HostAddr(dest), src, n);} |
| static inline void *Mac2Mac_memcpy(uint32 dest, uint32 src, size_t n) {return memcpy(Mac2HostAddr(dest), Mac2HostAddr(src), n);} |
| |
| |
| /* |
| * 680x0 emulation |
| */ |
| |
| // Initialization |
| extern bool Init680x0(void); // This routine may want to look at CPUType/FPUType to set up the apropriate emulation |
| extern void Exit680x0(void); |
| extern void InitFrameBufferMapping(void); |
| |
| // 680x0 dynamic recompilation activation flag |
| #if USE_JIT |
| extern bool UseJIT; |
| #else |
| const bool UseJIT = false; |
| #endif |
| |
| // 680x0 emulation functions |
| struct M68kRegisters; |
| extern void Start680x0(void); // Reset and start 680x0 |
| extern "C" void Execute68k(uint32 addr, M68kRegisters *r); // Execute 68k code from EMUL_OP routine |
| extern "C" void Execute68kTrap(uint16 trap, M68kRegisters *r); // Execute MacOS 68k trap from EMUL_OP routine |
| |
| // Interrupt functions |
| extern void TriggerInterrupt(void); // Trigger interrupt level 1 (InterruptFlag must be set first) |
| extern void TriggerNMI(void); // Trigger interrupt level 7 |
| |
| #endif |
