| 1 |
cebix |
1.1 |
/* |
| 2 |
cebix |
1.4 |
* cpu_emulation.h - Definitions for Basilisk II CPU emulation module (UAE 0.8.10 version) |
| 3 |
cebix |
1.1 |
* |
| 4 |
gbeauche |
1.14 |
* Basilisk II (C) 1997-2008 Christian Bauer |
| 5 |
cebix |
1.1 |
* |
| 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 |
| 8 |
|
|
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
|
|
* (at your option) any later version. |
| 10 |
|
|
* |
| 11 |
|
|
* This program is distributed in the hope that it will be useful, |
| 12 |
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
|
|
* GNU General Public License for more details. |
| 15 |
|
|
* |
| 16 |
|
|
* You should have received a copy of the GNU General Public License |
| 17 |
|
|
* along with this program; if not, write to the Free Software |
| 18 |
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 |
|
|
*/ |
| 20 |
|
|
|
| 21 |
|
|
#ifndef CPU_EMULATION_H |
| 22 |
|
|
#define CPU_EMULATION_H |
| 23 |
|
|
|
| 24 |
cebix |
1.3 |
#include <string.h> |
| 25 |
|
|
|
| 26 |
cebix |
1.1 |
|
| 27 |
|
|
/* |
| 28 |
|
|
* Memory system |
| 29 |
|
|
*/ |
| 30 |
|
|
|
| 31 |
|
|
// RAM and ROM pointers (allocated and set by main_*.cpp) |
| 32 |
|
|
extern uint32 RAMBaseMac; // RAM base (Mac address space), does not include Low Mem when != 0 |
| 33 |
|
|
extern uint8 *RAMBaseHost; // RAM base (host address space) |
| 34 |
|
|
extern uint32 RAMSize; // Size of RAM |
| 35 |
|
|
|
| 36 |
|
|
extern uint32 ROMBaseMac; // ROM base (Mac address space) |
| 37 |
|
|
extern uint8 *ROMBaseHost; // ROM base (host address space) |
| 38 |
|
|
extern uint32 ROMSize; // Size of ROM |
| 39 |
|
|
|
| 40 |
cebix |
1.9 |
#if !REAL_ADDRESSING && !DIRECT_ADDRESSING |
| 41 |
|
|
// If we are not using real or direct addressing, the Mac frame buffer gets |
| 42 |
|
|
// mapped to this location. The memory must be allocated by VideoInit(). |
| 43 |
|
|
// If multiple monitors are used, they must share the frame buffer |
| 44 |
cebix |
1.1 |
const uint32 MacFrameBaseMac = 0xa0000000; |
| 45 |
|
|
extern uint8 *MacFrameBaseHost; // Frame buffer base (host address space) |
| 46 |
|
|
extern uint32 MacFrameSize; // Size of frame buffer |
| 47 |
gbeauche |
1.7 |
#endif |
| 48 |
cebix |
1.1 |
extern int MacFrameLayout; // Frame buffer layout (see defines below) |
| 49 |
|
|
|
| 50 |
|
|
// Possible frame buffer layouts |
| 51 |
|
|
enum { |
| 52 |
|
|
FLAYOUT_NONE, // No frame buffer |
| 53 |
|
|
FLAYOUT_DIRECT, // Frame buffer is in MacOS layout, no conversion needed |
| 54 |
|
|
FLAYOUT_HOST_555, // 16 bit, RGB 555, host byte order |
| 55 |
|
|
FLAYOUT_HOST_565, // 16 bit, RGB 565, host byte order |
| 56 |
|
|
FLAYOUT_HOST_888 // 32 bit, RGB 888, host byte order |
| 57 |
|
|
}; |
| 58 |
|
|
|
| 59 |
|
|
// Mac memory access functions |
| 60 |
|
|
#include "memory.h" |
| 61 |
|
|
static inline uint32 ReadMacInt32(uint32 addr) {return get_long(addr);} |
| 62 |
|
|
static inline uint32 ReadMacInt16(uint32 addr) {return get_word(addr);} |
| 63 |
|
|
static inline uint32 ReadMacInt8(uint32 addr) {return get_byte(addr);} |
| 64 |
|
|
static inline void WriteMacInt32(uint32 addr, uint32 l) {put_long(addr, l);} |
| 65 |
|
|
static inline void WriteMacInt16(uint32 addr, uint32 w) {put_word(addr, w);} |
| 66 |
|
|
static inline void WriteMacInt8(uint32 addr, uint32 b) {put_byte(addr, b);} |
| 67 |
|
|
static inline uint8 *Mac2HostAddr(uint32 addr) {return get_real_address(addr);} |
| 68 |
gbeauche |
1.7 |
static inline uint32 Host2MacAddr(uint8 *addr) {return get_virtual_address(addr);} |
| 69 |
|
|
|
| 70 |
cebix |
1.2 |
static inline void *Mac_memset(uint32 addr, int c, size_t n) {return memset(Mac2HostAddr(addr), c, n);} |
| 71 |
|
|
static inline void *Mac2Host_memcpy(void *dest, uint32 src, size_t n) {return memcpy(dest, Mac2HostAddr(src), n);} |
| 72 |
|
|
static inline void *Host2Mac_memcpy(uint32 dest, const void *src, size_t n) {return memcpy(Mac2HostAddr(dest), src, n);} |
| 73 |
|
|
static inline void *Mac2Mac_memcpy(uint32 dest, uint32 src, size_t n) {return memcpy(Mac2HostAddr(dest), Mac2HostAddr(src), n);} |
| 74 |
cebix |
1.1 |
|
| 75 |
|
|
|
| 76 |
|
|
/* |
| 77 |
|
|
* 680x0 emulation |
| 78 |
|
|
*/ |
| 79 |
|
|
|
| 80 |
|
|
// Initialization |
| 81 |
|
|
extern bool Init680x0(void); // This routine may want to look at CPUType/FPUType to set up the apropriate emulation |
| 82 |
|
|
extern void Exit680x0(void); |
| 83 |
cebix |
1.9 |
extern void InitFrameBufferMapping(void); |
| 84 |
cebix |
1.1 |
|
| 85 |
gbeauche |
1.11 |
// 680x0 dynamic recompilation activation flag |
| 86 |
|
|
#if USE_JIT |
| 87 |
|
|
extern bool UseJIT; |
| 88 |
|
|
#else |
| 89 |
|
|
const bool UseJIT = false; |
| 90 |
|
|
#endif |
| 91 |
|
|
|
| 92 |
cebix |
1.1 |
// 680x0 emulation functions |
| 93 |
|
|
struct M68kRegisters; |
| 94 |
|
|
extern void Start680x0(void); // Reset and start 680x0 |
| 95 |
|
|
extern "C" void Execute68k(uint32 addr, M68kRegisters *r); // Execute 68k code from EMUL_OP routine |
| 96 |
|
|
extern "C" void Execute68kTrap(uint16 trap, M68kRegisters *r); // Execute MacOS 68k trap from EMUL_OP routine |
| 97 |
|
|
|
| 98 |
|
|
// Interrupt functions |
| 99 |
|
|
extern void TriggerInterrupt(void); // Trigger interrupt level 1 (InterruptFlag must be set first) |
| 100 |
cebix |
1.6 |
extern void TriggerNMI(void); // Trigger interrupt level 7 |
| 101 |
cebix |
1.1 |
|
| 102 |
|
|
#endif |
