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root/cebix/SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.33 by gbeauche, 2004-04-22T20:57:31Z vs.
Revision 1.48 by gbeauche, 2004-06-26T15:26:18Z

#	Line 38 | Line 38
38		#include "name_registry.h"
39		#include "serial.h"
40		#include "ether.h"
41	+	#include "timer.h"
42
43		#include <stdio.h>
44		#include <stdlib.h>
45
46	+	#ifdef USE_SDL_VIDEO
47	+	#include <SDL_events.h>
48	+	#endif
49	+
50		#if ENABLE_MON
51		#include "mon.h"
52		#include "mon_disass.h"
#	Line 51 | Line 56
56		#include "debug.h"
57
58		// Emulation time statistics
59	<	#define EMUL_TIME_STATS 1
59	>	#ifndef EMUL_TIME_STATS
60	>	#define EMUL_TIME_STATS 0
61	>	#endif
62
63		#if EMUL_TIME_STATS
64		static clock_t emul_start_time;
65	<	static uint32 interrupt_count = 0;
65	>	static uint32 interrupt_count = 0, ppc_interrupt_count = 0;
66		static clock_t interrupt_time = 0;
67		static uint32 exec68k_count = 0;
68		static clock_t exec68k_time = 0;
#	Line 83 | Line 90 | extern "C" void check_load_invoc(uint32
90		// PowerPC EmulOp to exit from emulation looop
91		const uint32 POWERPC_EXEC_RETURN = POWERPC_EMUL_OP | 1;
92
93	<	// Enable multicore (main/interrupts) cpu emulation?
94	<	#define MULTICORE_CPU (ASYNC_IRQ ? 1 : 0)
93	>	// Enable interrupt routine safety checks?
94	>	#define SAFE_INTERRUPT_PPC 1
95
96		// Enable Execute68k() safety checks?
97		#define SAFE_EXEC_68K 1
#	Line 98 | Line 105 | const uint32 POWERPC_EXEC_RETURN = POWER
105		// Interrupts in native mode?
106		#define INTERRUPTS_IN_NATIVE_MODE 1
107
108	+	// Enable native EMUL_OPs to be run without a mode switch
109	+	#define ENABLE_NATIVE_EMUL_OP 1
110	+
111		// Pointer to Kernel Data
112		static KernelData * const kernel_data = (KernelData *)KERNEL_DATA_BASE;
113
114		// SIGSEGV handler
115	<	static sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
115	>	sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
116	>
117	>	#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
118	>	// Special trampolines for EmulOp and NativeOp
119	>	static uint8 *emul_op_trampoline;
120	>	static uint8 *native_op_trampoline;
121	>	#endif
122
123		// JIT Compiler enabled?
124		static inline bool enable_jit_p()
#	Line 126 | Line 142 | class sheepshaver_cpu
142		void init_decoder();
143		void execute_sheep(uint32 opcode);
144
145	+	// Filter out EMUL_OP routines that only call native code
146	+	bool filter_execute_emul_op(uint32 emul_op);
147	+
148	+	// "Native" EMUL_OP routines
149	+	void execute_emul_op_microseconds();
150	+	void execute_emul_op_idle_time_1();
151	+	void execute_emul_op_idle_time_2();
152	+
153	+	// CPU context to preserve on interrupt
154	+	class interrupt_context {
155	+	uint32 gpr[32];
156	+	uint32 pc;
157	+	uint32 lr;
158	+	uint32 ctr;
159	+	uint32 cr;
160	+	uint32 xer;
161	+	sheepshaver_cpu *cpu;
162	+	const char *where;
163	+	public:
164	+	interrupt_context(sheepshaver_cpu *_cpu, const char *_where);
165	+	~interrupt_context();
166	+	};
167	+
168		public:
169
170		// Constructor
#	Line 137 | Line 176 | public:
176		uint32 get_xer() const          { return xer().get(); }
177		void set_xer(uint32 v)          { xer().set(v); }
178
179	+	// Execute NATIVE_OP routine
180	+	void execute_native_op(uint32 native_op);
181	+
182		// Execute EMUL_OP routine
183		void execute_emul_op(uint32 emul_op);
184
#	Line 150 | Line 192 | public:
192		uint32 execute_macos_code(uint32 tvect, int nargs, uint32 const *args);
193
194		// Compile one instruction
195	<	virtual bool compile1(codegen_context_t & cg_context);
195	>	virtual int compile1(codegen_context_t & cg_context);
196
197		// Resource manager thunk
198		void get_resource(uint32 old_get_resource);
#	Line 221 | Line 263 | void sheepshaver_cpu::init_decoder()
263		}
264		}
265
224	–	// Forward declaration for native opcode handler
225	–	static void NativeOp(int selector);
226	–
266		/*              NativeOp instruction format:
267	<	+------------+--------------------------+--+----------+------------+
268	<	|      6     |                          |FN|    OP    |      2     |
269	<	+------------+--------------------------+--+----------+------------+
270	<	0         5 |6                       19 20 21      25 26        31
267	>	+------------+-------------------------+--+-----------+------------+
268	>	|      6     |                         |FN|    OP     |      2     |
269	>	+------------+-------------------------+--+-----------+------------+
270	>	0         5 |6                      18 19 20      25 26        31
271		*/
272
273	<	typedef bit_field< 20, 20 > FN_field;
274	<	typedef bit_field< 21, 25 > NATIVE_OP_field;
273	>	typedef bit_field< 19, 19 > FN_field;
274	>	typedef bit_field< 20, 25 > NATIVE_OP_field;
275		typedef bit_field< 26, 31 > EMUL_OP_field;
276
277	+	// "Native" EMUL_OP routines
278	+	#define GPR_A(REG) gpr(16 + (REG))
279	+	#define GPR_D(REG) gpr( 8 + (REG))
280	+
281	+	void sheepshaver_cpu::execute_emul_op_microseconds()
282	+	{
283	+	Microseconds(GPR_A(0), GPR_D(0));
284	+	}
285	+
286	+	void sheepshaver_cpu::execute_emul_op_idle_time_1()
287	+	{
288	+	// Sleep if no events pending
289	+	if (ReadMacInt32(0x14c) == 0)
290	+	Delay_usec(16667);
291	+	GPR_A(0) = ReadMacInt32(0x2b6);
292	+	}
293	+
294	+	void sheepshaver_cpu::execute_emul_op_idle_time_2()
295	+	{
296	+	// Sleep if no events pending
297	+	if (ReadMacInt32(0x14c) == 0)
298	+	Delay_usec(16667);
299	+	GPR_D(0) = (uint32)-2;
300	+	}
301	+
302	+	// Filter out EMUL_OP routines that only call native code
303	+	bool sheepshaver_cpu::filter_execute_emul_op(uint32 emul_op)
304	+	{
305	+	switch (emul_op) {
306	+	case OP_MICROSECONDS:
307	+	execute_emul_op_microseconds();
308	+	return true;
309	+	case OP_IDLE_TIME:
310	+	execute_emul_op_idle_time_1();
311	+	return true;
312	+	case OP_IDLE_TIME_2:
313	+	execute_emul_op_idle_time_2();
314	+	return true;
315	+	}
316	+	return false;
317	+	}
318	+
319		// Execute EMUL_OP routine
320		void sheepshaver_cpu::execute_emul_op(uint32 emul_op)
321		{
322	+	#if ENABLE_NATIVE_EMUL_OP
323	+	// First, filter out EMUL_OPs that can be executed without a mode switch
324	+	if (filter_execute_emul_op(emul_op))
325	+	return;
326	+	#endif
327	+
328		M68kRegisters r68;
329		WriteMacInt32(XLM_68K_R25, gpr(25));
330		WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
#	Line 275 | Line 362 | void sheepshaver_cpu::execute_sheep(uint
362		break;
363
364		case 2:         // EXEC_NATIVE
365	<	NativeOp(NATIVE_OP_field::extract(opcode));
365	>	execute_native_op(NATIVE_OP_field::extract(opcode));
366		if (FN_field::test(opcode))
367		pc() = lr();
368		else
#	Line 290 | Line 377 | void sheepshaver_cpu::execute_sheep(uint
377		}
378
379		// Compile one instruction
380	<	bool sheepshaver_cpu::compile1(codegen_context_t & cg_context)
380	>	int sheepshaver_cpu::compile1(codegen_context_t & cg_context)
381		{
382		#if PPC_ENABLE_JIT
383		const instr_info_t *ii = cg_context.instr_info;
384		if (ii->mnemo != PPC_I(SHEEP))
385	<	return false;
385	>	return COMPILE_FAILURE;
386
387	<	bool compiled = false;
387	>	int status = COMPILE_FAILURE;
388		powerpc_dyngen & dg = cg_context.codegen;
389		uint32 opcode = cg_context.opcode;
390
391		switch (opcode & 0x3f) {
392		case 0:         // EMUL_RETURN
393		dg.gen_invoke(QuitEmulator);
394	<	compiled = true;
394	>	status = COMPILE_CODE_OK;
395		break;
396
397		case 1:         // EXEC_RETURN
398		dg.gen_spcflags_set(SPCFLAG_CPU_EXEC_RETURN);
399	<	compiled = true;
399	>	// Don't check for pending interrupts, we do know we have to
400	>	// get out of this block ASAP
401	>	dg.gen_exec_return();
402	>	status = COMPILE_EPILOGUE_OK;
403		break;
404
405		case 2: {       // EXEC_NATIVE
406		uint32 selector = NATIVE_OP_field::extract(opcode);
407		switch (selector) {
408	+	#if !PPC_REENTRANT_JIT
409	+	// Filter out functions that may invoke Execute68k() or
410	+	// CallMacOS(), this would break reentrancy as they could
411	+	// invalidate the translation cache and even overwrite
412	+	// continuation code when we are done with them.
413		case NATIVE_PATCH_NAME_REGISTRY:
414		dg.gen_invoke(DoPatchNameRegistry);
415	<	compiled = true;
415	>	status = COMPILE_CODE_OK;
416		break;
417		case NATIVE_VIDEO_INSTALL_ACCEL:
418		dg.gen_invoke(VideoInstallAccel);
419	<	compiled = true;
419	>	status = COMPILE_CODE_OK;
420		break;
421		case NATIVE_VIDEO_VBL:
422		dg.gen_invoke(VideoVBL);
423	<	compiled = true;
423	>	status = COMPILE_CODE_OK;
424		break;
425		case NATIVE_GET_RESOURCE:
426		case NATIVE_GET_1_RESOURCE:
#	Line 343 | Line 438 | bool sheepshaver_cpu::compile1(codegen_c
438		typedef void (*func_t)(dyngen_cpu_base, uint32);
439		func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::get_resource).ptr();
440		dg.gen_invoke_CPU_im(func, old_get_resource);
441	<	compiled = true;
441	>	status = COMPILE_CODE_OK;
442		break;
443		}
349	–	case NATIVE_DISABLE_INTERRUPT:
350	–	dg.gen_invoke(DisableInterrupt);
351	–	compiled = true;
352	–	break;
353	–	case NATIVE_ENABLE_INTERRUPT:
354	–	dg.gen_invoke(EnableInterrupt);
355	–	compiled = true;
356	–	break;
444		case NATIVE_CHECK_LOAD_INVOC:
445		dg.gen_load_T0_GPR(3);
446		dg.gen_load_T1_GPR(4);
447		dg.gen_se_16_32_T1();
448		dg.gen_load_T2_GPR(5);
449		dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc);
450	<	compiled = true;
450	>	status = COMPILE_CODE_OK;
451	>	break;
452	>	#endif
453	>	case NATIVE_BITBLT:
454	>	dg.gen_load_T0_GPR(3);
455	>	dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt);
456	>	status = COMPILE_CODE_OK;
457	>	break;
458	>	case NATIVE_INVRECT:
459	>	dg.gen_load_T0_GPR(3);
460	>	dg.gen_invoke_T0((void (*)(uint32))NQD_invrect);
461	>	status = COMPILE_CODE_OK;
462	>	break;
463	>	case NATIVE_FILLRECT:
464	>	dg.gen_load_T0_GPR(3);
465	>	dg.gen_invoke_T0((void (*)(uint32))NQD_fillrect);
466	>	status = COMPILE_CODE_OK;
467		break;
468		}
469	<	if (FN_field::test(opcode)) {
470	<	if (compiled) {
469	>	// Could we fully translate this NativeOp?
470	>	if (status == COMPILE_CODE_OK) {
471	>	if (!FN_field::test(opcode))
472	>	cg_context.done_compile = false;
473	>	else {
474		dg.gen_load_A0_LR();
475		dg.gen_set_PC_A0();
476	+	cg_context.done_compile = true;
477		}
478	<	cg_context.done_compile = true;
478	>	break;
479		}
480	<	else
480	>	#if PPC_REENTRANT_JIT
481	>	// Try to execute NativeOp trampoline
482	>	if (!FN_field::test(opcode))
483	>	dg.gen_set_PC_im(cg_context.pc + 4);
484	>	else {
485	>	dg.gen_load_A0_LR();
486	>	dg.gen_set_PC_A0();
487	>	}
488	>	dg.gen_mov_32_T0_im(selector);
489	>	dg.gen_jmp(native_op_trampoline);
490	>	cg_context.done_compile = true;
491	>	status = COMPILE_EPILOGUE_OK;
492	>	break;
493	>	#endif
494	>	// Invoke NativeOp handler
495	>	if (!FN_field::test(opcode)) {
496	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
497	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
498	>	dg.gen_invoke_CPU_im(func, selector);
499		cg_context.done_compile = false;
500	+	status = COMPILE_CODE_OK;
501	+	}
502	+	// Otherwise, let it generate a call to execute_sheep() which
503	+	// will cause necessary updates to the program counter
504		break;
505		}
506
507		default: {      // EMUL_OP
508	+	uint32 emul_op = EMUL_OP_field::extract(opcode) - 3;
509	+	#if ENABLE_NATIVE_EMUL_OP
510	+	typedef void (*emul_op_func_t)(dyngen_cpu_base);
511	+	emul_op_func_t emul_op_func = 0;
512	+	switch (emul_op) {
513	+	case OP_MICROSECONDS:
514	+	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_microseconds).ptr();
515	+	break;
516	+	case OP_IDLE_TIME:
517	+	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_1).ptr();
518	+	break;
519	+	case OP_IDLE_TIME_2:
520	+	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_2).ptr();
521	+	break;
522	+	}
523	+	if (emul_op_func) {
524	+	dg.gen_invoke_CPU(emul_op_func);
525	+	cg_context.done_compile = false;
526	+	status = COMPILE_CODE_OK;
527	+	break;
528	+	}
529	+	#endif
530	+	#if PPC_REENTRANT_JIT
531	+	// Try to execute EmulOp trampoline
532	+	dg.gen_set_PC_im(cg_context.pc + 4);
533	+	dg.gen_mov_32_T0_im(emul_op);
534	+	dg.gen_jmp(emul_op_trampoline);
535	+	cg_context.done_compile = true;
536	+	status = COMPILE_EPILOGUE_OK;
537	+	break;
538	+	#endif
539	+	// Invoke EmulOp handler
540		typedef void (*func_t)(dyngen_cpu_base, uint32);
541		func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
542	<	dg.gen_invoke_CPU_im(func, EMUL_OP_field::extract(opcode) - 3);
542	>	dg.gen_invoke_CPU_im(func, emul_op);
543		cg_context.done_compile = false;
544	<	compiled = true;
544	>	status = COMPILE_CODE_OK;
545		break;
546		}
547		}
548	<	return compiled;
548	>	return status;
549	>	#endif
550	>	return COMPILE_FAILURE;
551	>	}
552	>
553	>	// CPU context to preserve on interrupt
554	>	sheepshaver_cpu::interrupt_context::interrupt_context(sheepshaver_cpu *_cpu, const char *_where)
555	>	{
556	>	#if SAFE_INTERRUPT_PPC >= 2
557	>	cpu = _cpu;
558	>	where = _where;
559	>
560	>	// Save interrupt context
561	>	memcpy(&gpr[0], &cpu->gpr(0), sizeof(gpr));
562	>	pc = cpu->pc();
563	>	lr = cpu->lr();
564	>	ctr = cpu->ctr();
565	>	cr = cpu->get_cr();
566	>	xer = cpu->get_xer();
567	>	#endif
568	>	}
569	>
570	>	sheepshaver_cpu::interrupt_context::~interrupt_context()
571	>	{
572	>	#if SAFE_INTERRUPT_PPC >= 2
573	>	// Check whether CPU context was preserved by interrupt
574	>	if (memcmp(&gpr[0], &cpu->gpr(0), sizeof(gpr)) != 0) {
575	>	printf("FATAL: %s: interrupt clobbers registers\n", where);
576	>	for (int i = 0; i < 32; i++)
577	>	if (gpr[i] != cpu->gpr(i))
578	>	printf(" r%d: %08x -> %08x\n", i, gpr[i], cpu->gpr(i));
579	>	}
580	>	if (pc != cpu->pc())
581	>	printf("FATAL: %s: interrupt clobbers PC\n", where);
582	>	if (lr != cpu->lr())
583	>	printf("FATAL: %s: interrupt clobbers LR\n", where);
584	>	if (ctr != cpu->ctr())
585	>	printf("FATAL: %s: interrupt clobbers CTR\n", where);
586	>	if (cr != cpu->get_cr())
587	>	printf("FATAL: %s: interrupt clobbers CR\n", where);
588	>	if (xer != cpu->get_xer())
589	>	printf("FATAL: %s: interrupt clobbers XER\n", where);
590		#endif
389	–	return false;
591		}
592
593		// Handle MacOS interrupt
594		void sheepshaver_cpu::interrupt(uint32 entry)
595		{
596		#if EMUL_TIME_STATS
597	<	interrupt_count++;
597	>	ppc_interrupt_count++;
598		const clock_t interrupt_start = clock();
599		#endif
600
601	<	#if !MULTICORE_CPU
601	>	#if SAFE_INTERRUPT_PPC
602	>	static int depth = 0;
603	>	if (depth != 0)
604	>	printf("FATAL: sheepshaver_cpu::interrupt() called more than once: %d\n", depth);
605	>	depth++;
606	>	#endif
607	>
608		// Save program counters and branch registers
609		uint32 saved_pc = pc();
610		uint32 saved_lr = lr();
611		uint32 saved_ctr= ctr();
612		uint32 saved_sp = gpr(1);
406	–	#endif
613
614		// Initialize stack pointer to SheepShaver alternate stack base
615		gpr(1) = SignalStackBase() - 64;
#	Line 443 | Line 649 | void sheepshaver_cpu::interrupt(uint32 e
649		// Enter nanokernel
650		execute(entry);
651
446	–	#if !MULTICORE_CPU
652		// Restore program counters and branch registers
653		pc() = saved_pc;
654		lr() = saved_lr;
655		ctr()= saved_ctr;
656		gpr(1) = saved_sp;
452	–	#endif
657
658		#if EMUL_TIME_STATS
659		interrupt_time += (clock() - interrupt_start);
660		#endif
661	+
662	+	#if SAFE_INTERRUPT_PPC
663	+	depth--;
664	+	#endif
665		}
666
667		// Execute 68k routine
#	Line 647 | Line 855 | inline void sheepshaver_cpu::get_resourc
855		*              SheepShaver CPU engine interface
856		**/
857
858	<	static sheepshaver_cpu *main_cpu = NULL;                // CPU emulator to handle usual control flow
859	<	static sheepshaver_cpu *interrupt_cpu = NULL;   // CPU emulator to handle interrupts
652	<	static sheepshaver_cpu *current_cpu = NULL;             // Current CPU emulator context
858	>	// PowerPC CPU emulator
859	>	static sheepshaver_cpu *ppc_cpu = NULL;
860
861		void FlushCodeCache(uintptr start, uintptr end)
862		{
863		D(bug("FlushCodeCache(%08x, %08x)\n", start, end));
864	<	main_cpu->invalidate_cache_range(start, end);
658	<	#if MULTICORE_CPU
659	<	interrupt_cpu->invalidate_cache_range(start, end);
660	<	#endif
661	<	}
662	<
663	<	static inline void cpu_push(sheepshaver_cpu *new_cpu)
664	<	{
665	<	#if MULTICORE_CPU
666	<	current_cpu = new_cpu;
667	<	#endif
668	<	}
669	<
670	<	static inline void cpu_pop()
671	<	{
672	<	#if MULTICORE_CPU
673	<	current_cpu = main_cpu;
674	<	#endif
864	>	ppc_cpu->invalidate_cache_range(start, end);
865		}
866
867		// Dump PPC registers
868		static void dump_registers(void)
869		{
870	<	current_cpu->dump_registers();
870	>	ppc_cpu->dump_registers();
871		}
872
873		// Dump log
874		static void dump_log(void)
875		{
876	<	current_cpu->dump_log();
876	>	ppc_cpu->dump_log();
877		}
878
879		/*
880		*  Initialize CPU emulation
881		*/
882
883	<	static sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
883	>	sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
884		{
885		#if ENABLE_VOSF
886		// Handle screen fault
#	Line 706 | Line 896 | static sigsegv_return_t sigsegv_handler(
896		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
897
898		// Get program counter of target CPU
899	<	sheepshaver_cpu * const cpu = current_cpu;
899	>	sheepshaver_cpu * const cpu = ppc_cpu;
900		const uint32 pc = cpu->pc();
901
902		// Fault in Mac ROM or RAM?
903	<	bool mac_fault = (pc >= ROM_BASE) && (pc < (ROM_BASE + ROM_AREA_SIZE)) || (pc >= RAMBase) && (pc < (RAMBase + RAMSize));
903	>	bool mac_fault = (pc >= ROM_BASE) && (pc < (ROM_BASE + ROM_AREA_SIZE)) || (pc >= RAMBase) && (pc < (RAMBase + RAMSize)) || (pc >= DR_CACHE_BASE && pc < (DR_CACHE_BASE + DR_CACHE_SIZE));
904		if (mac_fault) {
905
906		// "VM settings" during MacOS 8 installation
#	Line 730 | Line 920 | static sigsegv_return_t sigsegv_handler(
920		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
921		else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
922		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
923	+
924	+	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
925	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(16) == 0xf3012002 || cpu->gpr(16) == 0xf3012000))
926	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
927	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
928	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
929
930		// Ignore writes to the zero page
931		else if ((uint32)(addr - SheepMem::ZeroPage()) < (uint32)SheepMem::PageSize())
#	Line 746 | Line 942 | static sigsegv_return_t sigsegv_handler(
942		printf("SIGSEGV\n");
943		printf("  pc %p\n", fault_instruction);
944		printf("  ea %p\n", fault_address);
749	–	printf(" cpu %s\n", current_cpu == main_cpu ? "main" : "interrupts");
945		dump_registers();
946	<	current_cpu->dump_log();
946	>	ppc_cpu->dump_log();
947		enter_mon();
948		QuitEmulator();
949
#	Line 758 | Line 953 | static sigsegv_return_t sigsegv_handler(
953		void init_emul_ppc(void)
954		{
955		// Initialize main CPU emulator
956	<	main_cpu = new sheepshaver_cpu();
957	<	main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
958	<	main_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
956	>	ppc_cpu = new sheepshaver_cpu();
957	>	ppc_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
958	>	ppc_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
959		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
960
766	–	#if MULTICORE_CPU
767	–	// Initialize alternate CPU emulator to handle interrupts
768	–	interrupt_cpu = new sheepshaver_cpu();
769	–	#endif
770	–
771	–	// Install the handler for SIGSEGV
772	–	sigsegv_install_handler(sigsegv_handler);
773	–
961		#if ENABLE_MON
962		// Install "regs" command in cxmon
963		mon_add_command("regs", dump_registers, "regs                     Dump PowerPC registers\n");
#	Line 796 | Line 983 | void exit_emul_ppc(void)
983		printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
984		printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
985		(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
986	+	printf("Total ppc interrupt count: %d (%2.1f %%)\n", ppc_interrupt_count,
987	+	(double(ppc_interrupt_count) * 100.0) / double(interrupt_count));
988
989		#define PRINT_STATS(LABEL, VAR_PREFIX) do {                                                             \
990		printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count);             \
#	Line 812 | Line 1001 | void exit_emul_ppc(void)
1001		printf("\n");
1002		#endif
1003
1004	<	delete main_cpu;
816	<	#if MULTICORE_CPU
817	<	delete interrupt_cpu;
818	<	#endif
1004	>	delete ppc_cpu;
1005		}
1006
1007	+	#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
1008	+	// Initialize EmulOp trampolines
1009	+	void init_emul_op_trampolines(basic_dyngen & dg)
1010	+	{
1011	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
1012	+	func_t func;
1013	+
1014	+	// EmulOp
1015	+	emul_op_trampoline = dg.gen_start();
1016	+	func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
1017	+	dg.gen_invoke_CPU_T0(func);
1018	+	dg.gen_exec_return();
1019	+	dg.gen_end();
1020	+
1021	+	// NativeOp
1022	+	native_op_trampoline = dg.gen_start();
1023	+	func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
1024	+	dg.gen_invoke_CPU_T0(func);
1025	+	dg.gen_exec_return();
1026	+	dg.gen_end();
1027	+
1028	+	D(bug("EmulOp trampoline:   %p\n", emul_op_trampoline));
1029	+	D(bug("NativeOp trampoline: %p\n", native_op_trampoline));
1030	+	}
1031	+	#endif
1032	+
1033		/*
1034		*  Emulation loop
1035		*/
1036
1037		void emul_ppc(uint32 entry)
1038		{
827	–	current_cpu = main_cpu;
1039		#if 0
1040	<	current_cpu->start_log();
1040	>	ppc_cpu->start_log();
1041		#endif
1042		// start emulation loop and enable code translation or caching
1043	<	current_cpu->execute(entry);
1043	>	ppc_cpu->execute(entry);
1044		}
1045
1046		/*
1047		*  Handle PowerPC interrupt
1048		*/
1049
839	–	#if ASYNC_IRQ
840	–	void HandleInterrupt(void)
841	–	{
842	–	main_cpu->handle_interrupt();
843	–	}
844	–	#else
1050		void TriggerInterrupt(void)
1051		{
1052		#if 0
1053		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1054		#else
1055		// Trigger interrupt to main cpu only
1056	<	if (main_cpu)
1057	<	main_cpu->trigger_interrupt();
1056	>	if (ppc_cpu)
1057	>	ppc_cpu->trigger_interrupt();
1058		#endif
1059		}
855	–	#endif
1060
1061		void sheepshaver_cpu::handle_interrupt(void)
1062		{
1063	+	#ifdef USE_SDL_VIDEO
1064	+	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1065	+	SDL_PumpEvents();
1066	+	#endif
1067	+
1068		// Do nothing if interrupts are disabled
1069	<	if (*(int32 *)XLM_IRQ_NEST > 0)
1069	>	if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
1070		return;
1071
1072	<	// Do nothing if there is no interrupt pending
1073	<	if (InterruptFlags == 0)
1074	<	return;
1072	>	// Current interrupt nest level
1073	>	static int interrupt_depth = 0;
1074	>	++interrupt_depth;
1075	>	#if EMUL_TIME_STATS
1076	>	interrupt_count++;
1077	>	#endif
1078
1079		// Disable MacOS stack sniffer
1080		WriteMacInt32(0x110, 0);
#	Line 871 | Line 1083 | void sheepshaver_cpu::handle_interrupt(v
1083		switch (ReadMacInt32(XLM_RUN_MODE)) {
1084		case MODE_68K:
1085		// 68k emulator active, trigger 68k interrupt level 1
874	–	assert(current_cpu == main_cpu);
1086		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1087		set_cr(get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
1088		break;
#	Line 879 | Line 1090 | void sheepshaver_cpu::handle_interrupt(v
1090		#if INTERRUPTS_IN_NATIVE_MODE
1091		case MODE_NATIVE:
1092		// 68k emulator inactive, in nanokernel?
1093	<	assert(current_cpu == main_cpu);
1094	<	if (gpr(1) != KernelDataAddr) {
1093	>	if (gpr(1) != KernelDataAddr && interrupt_depth == 1) {
1094	>	interrupt_context ctx(this, "PowerPC mode");
1095	>
1096		// Prepare for 68k interrupt level 1
1097		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1098		WriteMacInt32(tswap32(kernel_data->v[0x658 >> 2]) + 0xdc,
#	Line 889 | Line 1101 | void sheepshaver_cpu::handle_interrupt(v
1101
1102		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1103		DisableInterrupt();
892	–	cpu_push(interrupt_cpu);
1104		if (ROMType == ROMTYPE_NEWWORLD)
1105	<	current_cpu->interrupt(ROM_BASE + 0x312b1c);
1105	>	ppc_cpu->interrupt(ROM_BASE + 0x312b1c);
1106		else
1107	<	current_cpu->interrupt(ROM_BASE + 0x312a3c);
897	<	cpu_pop();
1107	>	ppc_cpu->interrupt(ROM_BASE + 0x312a3c);
1108		}
1109		break;
1110		#endif
#	Line 903 | Line 1113 | void sheepshaver_cpu::handle_interrupt(v
1113		case MODE_EMUL_OP:
1114		// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
1115		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1116	+	interrupt_context ctx(this, "68k mode");
1117	+	#if EMUL_TIME_STATS
1118	+	const clock_t interrupt_start = clock();
1119	+	#endif
1120		#if 1
1121		// Execute full 68k interrupt routine
1122		M68kRegisters r;
#	Line 928 | Line 1142 | void sheepshaver_cpu::handle_interrupt(v
1142		}
1143		}
1144		#endif
1145	+	#if EMUL_TIME_STATS
1146	+	interrupt_time += (clock() - interrupt_start);
1147	+	#endif
1148		}
1149		break;
1150		#endif
1151		}
1152	+
1153	+	// We are done with this interrupt
1154	+	--interrupt_depth;
1155		}
1156
1157		static void get_resource(void);
#	Line 940 | Line 1160 | static void get_ind_resource(void);
1160		static void get_1_ind_resource(void);
1161		static void r_get_resource(void);
1162
1163	<	#define GPR(REG) current_cpu->gpr(REG)
1164	<
945	<	static void NativeOp(int selector)
1163	>	// Execute NATIVE_OP routine
1164	>	void sheepshaver_cpu::execute_native_op(uint32 selector)
1165		{
1166		#if EMUL_TIME_STATS
1167		native_exec_count++;
#	Line 960 | Line 1179 | static void NativeOp(int selector)
1179		VideoVBL();
1180		break;
1181		case NATIVE_VIDEO_DO_DRIVER_IO:
1182	<	GPR(3) = (int32)(int16)VideoDoDriverIO((void *)GPR(3), (void *)GPR(4),
1183	<	(void *)GPR(5), GPR(6), GPR(7));
1182	>	gpr(3) = (int32)(int16)VideoDoDriverIO((void *)gpr(3), (void *)gpr(4),
1183	>	(void *)gpr(5), gpr(6), gpr(7));
1184		break;
1185		#ifdef WORDS_BIGENDIAN
1186		case NATIVE_ETHER_IRQ:
1187		EtherIRQ();
1188		break;
1189		case NATIVE_ETHER_INIT:
1190	<	GPR(3) = InitStreamModule((void *)GPR(3));
1190	>	gpr(3) = InitStreamModule((void *)gpr(3));
1191		break;
1192		case NATIVE_ETHER_TERM:
1193		TerminateStreamModule();
1194		break;
1195		case NATIVE_ETHER_OPEN:
1196	<	GPR(3) = ether_open((queue_t *)GPR(3), (void *)GPR(4), GPR(5), GPR(6), (void*)GPR(7));
1196	>	gpr(3) = ether_open((queue_t *)gpr(3), (void *)gpr(4), gpr(5), gpr(6), (void*)gpr(7));
1197		break;
1198		case NATIVE_ETHER_CLOSE:
1199	<	GPR(3) = ether_close((queue_t *)GPR(3), GPR(4), (void *)GPR(5));
1199	>	gpr(3) = ether_close((queue_t *)gpr(3), gpr(4), (void *)gpr(5));
1200		break;
1201		case NATIVE_ETHER_WPUT:
1202	<	GPR(3) = ether_wput((queue_t *)GPR(3), (mblk_t *)GPR(4));
1202	>	gpr(3) = ether_wput((queue_t *)gpr(3), (mblk_t *)gpr(4));
1203		break;
1204		case NATIVE_ETHER_RSRV:
1205	<	GPR(3) = ether_rsrv((queue_t *)GPR(3));
1205	>	gpr(3) = ether_rsrv((queue_t *)gpr(3));
1206	>	break;
1207	>	#else
1208	>	case NATIVE_ETHER_INIT:
1209	>	// FIXME: needs more complicated thunks
1210	>	gpr(3) = false;
1211		break;
1212	+	#endif
1213		case NATIVE_SYNC_HOOK:
1214	<	GPR(3) = NQD_sync_hook(GPR(3));
1214	>	gpr(3) = NQD_sync_hook(gpr(3));
1215		break;
1216		case NATIVE_BITBLT_HOOK:
1217	<	GPR(3) = NQD_bitblt_hook(GPR(3));
1217	>	gpr(3) = NQD_bitblt_hook(gpr(3));
1218		break;
1219		case NATIVE_BITBLT:
1220	<	NQD_bitblt(GPR(3));
1220	>	NQD_bitblt(gpr(3));
1221		break;
1222		case NATIVE_FILLRECT_HOOK:
1223	<	GPR(3) = NQD_fillrect_hook(GPR(3));
1223	>	gpr(3) = NQD_fillrect_hook(gpr(3));
1224		break;
1225		case NATIVE_INVRECT:
1226	<	NQD_invrect(GPR(3));
1226	>	NQD_invrect(gpr(3));
1227		break;
1228		case NATIVE_FILLRECT:
1229	<	NQD_fillrect(GPR(3));
1229	>	NQD_fillrect(gpr(3));
1230		break;
1006	–	#else
1007	–	case NATIVE_ETHER_INIT:
1008	–	// FIXME: needs more complicated thunks
1009	–	GPR(3) = false;
1010	–	break;
1011	–	#endif
1231		case NATIVE_SERIAL_NOTHING:
1232		case NATIVE_SERIAL_OPEN:
1233		case NATIVE_SERIAL_PRIME_IN:
#	Line 1026 | Line 1245 | static void NativeOp(int selector)
1245		SerialStatus,
1246		SerialClose
1247		};
1248	<	GPR(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](GPR(3), GPR(4));
1248	>	gpr(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](gpr(3), gpr(4));
1249		break;
1250		}
1251		case NATIVE_GET_RESOURCE:
#	Line 1036 | Line 1255 | static void NativeOp(int selector)
1255		case NATIVE_R_GET_RESOURCE: {
1256		typedef void (*GetResourceCallback)(void);
1257		static const GetResourceCallback get_resource_callbacks[] = {
1258	<	get_resource,
1259	<	get_1_resource,
1260	<	get_ind_resource,
1261	<	get_1_ind_resource,
1262	<	r_get_resource
1258	>	::get_resource,
1259	>	::get_1_resource,
1260	>	::get_ind_resource,
1261	>	::get_1_ind_resource,
1262	>	::r_get_resource
1263		};
1264		get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1265		break;
1266		}
1048	–	case NATIVE_DISABLE_INTERRUPT:
1049	–	DisableInterrupt();
1050	–	break;
1051	–	case NATIVE_ENABLE_INTERRUPT:
1052	–	EnableInterrupt();
1053	–	break;
1267		case NATIVE_MAKE_EXECUTABLE:
1268	<	MakeExecutable(0, (void *)GPR(4), GPR(5));
1268	>	MakeExecutable(0, (void *)gpr(4), gpr(5));
1269		break;
1270		case NATIVE_CHECK_LOAD_INVOC:
1271	<	check_load_invoc(GPR(3), GPR(4), GPR(5));
1271	>	check_load_invoc(gpr(3), gpr(4), gpr(5));
1272		break;
1273		default:
1274		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
#	Line 1076 | Line 1289 | static void NativeOp(int selector)
1289
1290		void Execute68k(uint32 pc, M68kRegisters *r)
1291		{
1292	<	current_cpu->execute_68k(pc, r);
1292	>	ppc_cpu->execute_68k(pc, r);
1293		}
1294
1295		/*
#	Line 1099 | Line 1312 | void Execute68kTrap(uint16 trap, M68kReg
1312
1313		uint32 call_macos(uint32 tvect)
1314		{
1315	<	return current_cpu->execute_macos_code(tvect, 0, NULL);
1315	>	return ppc_cpu->execute_macos_code(tvect, 0, NULL);
1316		}
1317
1318		uint32 call_macos1(uint32 tvect, uint32 arg1)
1319		{
1320		const uint32 args[] = { arg1 };
1321	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1321	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1322		}
1323
1324		uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2)
1325		{
1326		const uint32 args[] = { arg1, arg2 };
1327	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1327	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1328		}
1329
1330		uint32 call_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3)
1331		{
1332		const uint32 args[] = { arg1, arg2, arg3 };
1333	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1333	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1334		}
1335
1336		uint32 call_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4)
1337		{
1338		const uint32 args[] = { arg1, arg2, arg3, arg4 };
1339	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1339	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1340		}
1341
1342		uint32 call_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5)
1343		{
1344		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5 };
1345	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1345	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1346		}
1347
1348		uint32 call_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6)
1349		{
1350		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6 };
1351	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1351	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1352		}
1353
1354		uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7)
1355		{
1356		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 };
1357	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1357	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1358		}
1359
1360		/*
#	Line 1150 | Line 1363 | uint32 call_macos7(uint32 tvect, uint32
1363
1364		void get_resource(void)
1365		{
1366	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1366	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1367		}
1368
1369		void get_1_resource(void)
1370		{
1371	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1371	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1372		}
1373
1374		void get_ind_resource(void)
1375		{
1376	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1376	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1377		}
1378
1379		void get_1_ind_resource(void)
1380		{
1381	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1381	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1382		}
1383
1384		void r_get_resource(void)
1385		{
1386	<	current_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1386	>	ppc_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1387		}

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