[ViewVC] Diff of: cebix/BasiliskII/src/AmigaOS/main

Comparing BasiliskII/src/AmigaOS/main_amiga.cpp (file contents):
Revision 1.4 by cebix, 1999-10-21T22:39:56Z vs.
Revision 1.21 by cebix, 2002-01-15T14:58:34Z

#	Line 1 \| Line 1
1		/*
2		* main_amiga.cpp - Startup code for AmigaOS
3		*
4	<	* Basilisk II (C) 1997-1999 Christian Bauer
4	>	* Basilisk II (C) 1997-2002 Christian Bauer
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 91 \| Line 91 \| *struct Library GadToolsBase = NULL;**
91		struct Library *IFFParseBase = NULL;
92		struct Library *AslBase = NULL;
93		struct Library *P96Base = NULL;
94	+	struct Library *CyberGfxBase = NULL;
95		struct Library *TimerBase = NULL;
96		struct Library *AHIBase = NULL;
97		struct Library *DiskBase = NULL;
98
99		struct Task *MainTask; // Our task
100	<	uint32 ScratchMem = NULL; // Scratch memory for Mac ROM writes
100	>	uint8 *ScratchMem = NULL; // Scratch memory for Mac ROM writes
101		APTR OldTrapHandler = NULL; // Old trap handler
102		APTR OldExceptionHandler = NULL; // Old exception handler
103		BYTE IRQSig = -1; // "Interrupt" signal number
#	Line 107 \| Line 108 \| *static struct timerequest timereq = NUL**
108		static struct MsgPort *ahi_port = NULL; // Port for AHI
109		static struct AHIRequest *ahi_io = NULL; // IORequest for AHI
110
111	+	static struct Process *xpram_proc = NULL; // XPRAM watchdog
112	+	static volatile bool xpram_proc_active = true; // Flag for quitting the XPRAM watchdog
113	+
114		static struct Process *tick_proc = NULL; // 60Hz process
115		static volatile bool tick_proc_active = true; // Flag for quitting the 60Hz process
116
#	Line 119 \| Line 123 \| struct trap_regs;
123		extern "C" void AtomicAnd(uint32 *p, uint32 val);
124		extern "C" void AtomicOr(uint32 *p, uint32 val);
125		extern "C" void MoveVBR(void);
126	+	extern "C" void DisableSuperBypass(void);
127		extern "C" void TrapHandlerAsm(void);
128		extern "C" void ExceptionHandlerAsm(void);
129		extern "C" void IllInstrHandler(trap_regs *regs);
130		extern "C" void PrivViolHandler(trap_regs *regs);
131		extern "C" void quit_emulator(void);
132	+	extern "C" void AsmTriggerNMI(void);
133		uint16 EmulatedSR; // Emulated SR (supervisor bit and interrupt mask)
134
135
136		// Prototypes
137		static void jump_to_rom(void);
138	+	static void xpram_func(void);
139		static void tick_func(void);
140
141
#	Line 136 \| Line 143 \| static void tick_func(void);
143		* Main program
144		*/
145
146	<	int main(void)
146	>	int main(int argc, char **argv)
147		{
148		// Initialize variables
149		RAMBaseHost = NULL;
#	Line 167 \| Line 174 \| int main(void)
174		QuitEmulator();
175		GadToolsBase = OpenLibrary((UBYTE *)"gadtools.library", 39);
176		if (GadToolsBase == NULL) {
177	<	ErrorAlert(GetString(STR_NO_GADTOOLS_LIB_ERR));
177	>	ErrorAlert(STR_NO_GADTOOLS_LIB_ERR);
178		QuitEmulator();
179		}
180		IFFParseBase = OpenLibrary((UBYTE *)"iffparse.library", 39);
181		if (IFFParseBase == NULL) {
182	<	ErrorAlert(GetString(STR_NO_IFFPARSE_LIB_ERR));
182	>	ErrorAlert(STR_NO_IFFPARSE_LIB_ERR);
183		QuitEmulator();
184		}
185		AslBase = OpenLibrary((UBYTE *)"asl.library", 36);
186		if (AslBase == NULL) {
187	<	ErrorAlert(GetString(STR_NO_ASL_LIB_ERR));
187	>	ErrorAlert(STR_NO_ASL_LIB_ERR);
188		QuitEmulator();
189		}
190	+
191	+	if (FindTask((UBYTE *) "� Enforcer �"))
192	+	{
193	+	ErrorAlert(STR_ENFORCER_RUNNING_ERR);
194	+	QuitEmulator();
195	+	}
196	+
197	+	// These two can fail (the respective gfx support won't be available, then)
198		P96Base = OpenLibrary((UBYTE *)"Picasso96API.library", 2);
199	+	CyberGfxBase = OpenLibrary((UBYTE *)"cybergraphics.library", 2);
200
201		// Read preferences
202	<	PrefsInit();
202	>	PrefsInit(argc, argv);
203
204		// Open AHI
205		ahi_port = CreateMsgPort();
#	Line 207 \| Line 223 \| int main(void)
223
224		// Check start of Chip memory (because we need access to 0x0000..0x2000)
225		if ((uint32)FindName(&SysBase->MemList, (UBYTE *)"chip memory") < 0x2000) {
226	<	ErrorAlert(GetString(STR_NO_PREPARE_EMUL_ERR));
226	>	ErrorAlert(STR_NO_PREPARE_EMUL_ERR);
227		QuitEmulator();
228		}
229
230		// Open timer.device
231		timereq = (struct timerequest *)AllocVec(sizeof(timerequest), MEMF_PUBLIC \| MEMF_CLEAR);
232		if (timereq == NULL) {
233	<	ErrorAlert(GetString(STR_NO_MEM_ERR));
233	>	ErrorAlert(STR_NO_MEM_ERR);
234		QuitEmulator();
235		}
236		if (OpenDevice((UBYTE )TIMERNAME, UNIT_MICROHZ, (struct IORequest )timereq, 0)) {
237	<	ErrorAlert(GetString(STR_NO_TIMER_DEV_ERR));
237	>	ErrorAlert(STR_NO_TIMER_DEV_ERR);
238		QuitEmulator();
239		}
240		TimerBase = (struct Library *)timereq->tr_node.io_Device;
241
242		// Allocate scratch memory
243	<	ScratchMem = (uint32)AllocMem(SCRATCH_MEM_SIZE, MEMF_PUBLIC);
243	>	ScratchMem = (uint8 *)AllocMem(SCRATCH_MEM_SIZE, MEMF_PUBLIC);
244		if (ScratchMem == NULL) {
245	<	ErrorAlert(GetString(STR_NO_MEM_ERR));
245	>	ErrorAlert(STR_NO_MEM_ERR);
246		QuitEmulator();
247		}
248		ScratchMem += SCRATCH_MEM_SIZE/2; // ScratchMem points to middle of block
#	Line 238 \| Line 254 \| int main(void)
254		WarningAlert(GetString(STR_SMALL_RAM_WARN));
255		RAMSize = 1024*1024;
256		}
257	<	RAMBaseHost = (uint8 *)AllocMem(RAMSize + 0x100000, MEMF_PUBLIC);
257	>	RAMBaseHost = (uint8 *)AllocVec(RAMSize + 0x100000, MEMF_PUBLIC);
258		if (RAMBaseHost == NULL) {
259	<	ErrorAlert(GetString(STR_NO_MEM_ERR));
260	<	QuitEmulator();
259	>	uint32 newRAMSize = AvailMem(MEMF_LARGEST) - 0x100000;
260	>	char xText[120];
261	>
262	>	sprintf(xText, GetString(STR_NOT_ENOUGH_MEM_WARN), RAMSize, newRAMSize);
263	>
264	>	if (ChoiceAlert(xText, "Use", "Quit") != 1)
265	>	QuitEmulator();
266	>
267	>	RAMSize = newRAMSize;
268	>	RAMBaseHost = (uint8 *)AllocVec(RAMSize + 0x100000, MEMF_PUBLIC);
269	>	if (RAMBaseHost == NULL) {
270	>	ErrorAlert(STR_NO_MEM_ERR);
271	>	QuitEmulator();
272	>	}
273		}
274		RAMBaseMac = (uint32)RAMBaseHost;
275		D(bug("Mac RAM starts at %08lx\n", RAMBaseHost));
#	Line 254 \| Line 282 \| int main(void)
282
283		// Load Mac ROM
284		BPTR rom_fh = Open(rom_path ? (char )rom_path : (char )ROM_FILE_NAME, MODE_OLDFILE);
285	<	if (rom_fh == NULL) {
286	<	ErrorAlert(GetString(STR_NO_ROM_FILE_ERR));
285	>	if (rom_fh == 0) {
286	>	ErrorAlert(STR_NO_ROM_FILE_ERR);
287		QuitEmulator();
288		}
289		printf(GetString(STR_READING_ROM_FILE));
290		Seek(rom_fh, 0, OFFSET_END);
291		ROMSize = Seek(rom_fh, 0, OFFSET_CURRENT);
292		if (ROMSize != 5121024 && ROMSize != 10241024) {
293	<	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
293	>	ErrorAlert(STR_ROM_SIZE_ERR);
294		Close(rom_fh);
295		QuitEmulator();
296		}
297		Seek(rom_fh, 0, OFFSET_BEGINNING);
298		if (Read(rom_fh, ROMBaseHost, ROMSize) != ROMSize) {
299	<	ErrorAlert(GetString(STR_ROM_FILE_READ_ERR));
299	>	ErrorAlert(STR_ROM_FILE_READ_ERR);
300		Close(rom_fh);
301		QuitEmulator();
302		}
#	Line 286 \| Line 314 \| int main(void)
314		// Move VBR away from 0 if neccessary
315		MoveVBR();
316
317	+	// On 68060, disable Super Bypass mode because of a CPU bug that is triggered by MacOS 8
318	+	if (CPUIs68060)
319	+	DisableSuperBypass();
320	+
321		// Install trap handler
322		EmulatedSR = 0x2700;
323		OldTrapHandler = MainTask->tc_TrapCode;
#	Line 298 \| Line 330 \| int main(void)
330		MainTask->tc_ExceptCode = (APTR)ExceptionHandlerAsm;
331		SetExcept(SIGBREAKF_CTRL_C \| IRQSigMask, SIGBREAKF_CTRL_C \| IRQSigMask);
332
333	+	// Start XPRAM watchdog process
334	+	xpram_proc = CreateNewProcTags(
335	+	NP_Entry, (ULONG)xpram_func,
336	+	NP_Name, (ULONG)"Basilisk II XPRAM Watchdog",
337	+	NP_Priority, 0,
338	+	TAG_END
339	+	);
340	+
341		// Start 60Hz process
342		tick_proc = CreateNewProcTags(
343		NP_Entry, (ULONG)tick_func,
#	Line 309 \| Line 349 \| int main(void)
349		// Set task priority to -1 so we don't use all processing time
350		SetTaskPri(MainTask, -1);
351
352	+	WriteMacInt32(0xbff, 0); // MacsBugFlags
353	+
354		// Swap stack to Mac RAM area
355		stack_swap.stk_Lower = RAMBaseHost;
356		stack_swap.stk_Upper = (ULONG)RAMBaseHost + RAMSize;
#	Line 343 \| Line 385 \| void __saveds quit_emulator(void)
385
386		void QuitEmulator(void)
387		{
388	+	// Stop 60Hz process
389	+	if (tick_proc) {
390	+	SetSignal(0, SIGF_SINGLE);
391	+	tick_proc_active = false;
392	+	Wait(SIGF_SINGLE);
393	+	}
394	+
395	+	// Stop XPRAM watchdog process
396	+	if (xpram_proc) {
397	+	SetSignal(0, SIGF_SINGLE);
398	+	xpram_proc_active = false;
399	+	Wait(SIGF_SINGLE);
400	+	}
401	+
402		// Restore stack
403		if (stack_swapped) {
404		stack_swapped = false;
#	Line 356 \| Line 412 \| void QuitEmulator(void)
412		FreeSignal(IRQSig);
413		}
414
359	–	// Stop 60Hz thread
360	–	if (tick_proc) {
361	–	SetSignal(0, SIGF_SINGLE);
362	–	tick_proc_active = false;
363	–	Wait(SIGF_SINGLE);
364	–	}
365	–
415		// Remove trap handler
416		MainTask->tc_TrapCode = OldTrapHandler;
417
#	Line 371 \| Line 420 \| void QuitEmulator(void)
420
421		// Delete RAM/ROM area
422		if (RAMBaseHost)
423	<	FreeMem(RAMBaseHost, RAMSize + 0x100000);
423	>	FreeVec(RAMBaseHost);
424
425		// Delete scratch memory area
426		if (ScratchMem)
#	Line 398 \| Line 447 \| void QuitEmulator(void)
447		PrefsExit();
448
449		// Close libraries
450	+	if (CyberGfxBase)
451	+	CloseLibrary(CyberGfxBase);
452		if (P96Base)
453		CloseLibrary(P96Base);
454		if (AslBase)
#	Line 427 \| Line 478 \| *void FlushCodeCache(void start, uint32**
478
479
480		/*
481	+	* Mutexes
482	+	*/
483	+
484	+	struct B2_mutex {
485	+	int dummy; //!!
486	+	};
487	+
488	+	B2_mutex *B2_create_mutex(void)
489	+	{
490	+	return new B2_mutex;
491	+	}
492	+
493	+	void B2_lock_mutex(B2_mutex *mutex)
494	+	{
495	+	}
496	+
497	+	void B2_unlock_mutex(B2_mutex *mutex)
498	+	{
499	+	}
500	+
501	+	void B2_delete_mutex(B2_mutex *mutex)
502	+	{
503	+	delete mutex;
504	+	}
505	+
506	+
507	+	/*
508		* Interrupt flags (must be handled atomically!)
509		*/
510
#	Line 447 \| Line 525 \| void TriggerInterrupt(void)
525		Signal(MainTask, IRQSigMask);
526		}
527
528	+	void TriggerNMI(void)
529	+	{
530	+	AsmTriggerNMI();
531	+	}
532	+
533
534		/*
535	<	* 60Hz thread
535	>	* 60Hz thread (really 60.15Hz)
536		*/
537
538		static __saveds void tick_func(void)
#	Line 489 \| Line 572 \| static __saveds void tick_func(void)
572		if (++tick_counter > 60) {
573		tick_counter = 0;
574		WriteMacInt32(0x20c, TimerDateTime());
575	+	SetInterruptFlag(INTFLAG_1HZ);
576	+	TriggerInterrupt();
577		}
578
579		// Trigger 60Hz interrupt
#	Line 514 \| Line 599 \| static __saveds void tick_func(void)
599
600
601		/*
602	+	* XPRAM watchdog thread (saves XPRAM every minute)
603	+	*/
604	+
605	+	static __saveds void xpram_func(void)
606	+	{
607	+	uint8 last_xpram[XPRAM_SIZE];
608	+	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
609	+
610	+	while (xpram_proc_active) {
611	+	for (int i=0; i<60 && xpram_proc_active; i++)
612	+	Delay(50); // Only wait 1 second so we quit promptly when xpram_proc_active becomes false
613	+	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
614	+	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
615	+	SaveXPRAM();
616	+	}
617	+	}
618	+
619	+	// Main task asked for termination, send signal
620	+	Forbid();
621	+	Signal(MainTask, SIGF_SINGLE);
622	+	}
623	+
624	+
625	+	/*
626		* Display error alert
627		*/
628
#	Line 602 \| Line 711 \| void __saveds IllInstrHandler(trap_regs
711		EmulatedSR \|= 0x0700;
712
713		// Call opcode routine
714	<	EmulOp((uint16 )(r->pc), (M68kRegisters *)r);
714	>	EmulOp(opcode, (M68kRegisters *)r);
715		r->pc += 2;
716
717		// Restore interrupts

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing BasiliskII/src/AmigaOS/main_amiga.cpp (file contents): Revision 1.4 by cebix, 1999-10-21T22:39:56Z vs. Revision 1.21 by cebix, 2002-01-15T14:58:34Z

Diff Legend

Comparing BasiliskII/src/AmigaOS/main_amiga.cpp (file contents):
Revision 1.4 by cebix, 1999-10-21T22:39:56Z vs.
Revision 1.21 by cebix, 2002-01-15T14:58:34Z