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

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.34 by gbeauche, 2004-04-22T21:45:18Z vs.
Revision 1.42 by gbeauche, 2004-05-23T05:28:12Z

#	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>
#	Line 83 | Line 84 | extern "C" void check_load_invoc(uint32
84		// PowerPC EmulOp to exit from emulation looop
85		const uint32 POWERPC_EXEC_RETURN = POWERPC_EMUL_OP | 1;
86
87	<	// Enable multicore (main/interrupts) cpu emulation?
88	<	#define MULTICORE_CPU (ASYNC_IRQ ? 1 : 0)
87	>	// Enable interrupt routine safety checks?
88	>	#define SAFE_INTERRUPT_PPC 1
89
90		// Enable Execute68k() safety checks?
91		#define SAFE_EXEC_68K 1
#	Line 98 | Line 99 | const uint32 POWERPC_EXEC_RETURN = POWER
99		// Interrupts in native mode?
100		#define INTERRUPTS_IN_NATIVE_MODE 1
101
102	+	// Enable native EMUL_OPs to be run without a mode switch
103	+	#define ENABLE_NATIVE_EMUL_OP 1
104	+
105		// Pointer to Kernel Data
106		static KernelData * const kernel_data = (KernelData *)KERNEL_DATA_BASE;
107
108		// SIGSEGV handler
109		static sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
110
111	+	#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
112	+	// Special trampolines for EmulOp and NativeOp
113	+	static uint8 *emul_op_trampoline;
114	+	static uint8 *native_op_trampoline;
115	+	#endif
116	+
117		// JIT Compiler enabled?
118		static inline bool enable_jit_p()
119		{
#	Line 126 | Line 136 | class sheepshaver_cpu
136		void init_decoder();
137		void execute_sheep(uint32 opcode);
138
139	+	// Filter out EMUL_OP routines that only call native code
140	+	bool filter_execute_emul_op(uint32 emul_op);
141	+
142	+	// "Native" EMUL_OP routines
143	+	void execute_emul_op_microseconds();
144	+	void execute_emul_op_idle_time_1();
145	+	void execute_emul_op_idle_time_2();
146	+
147	+	// CPU context to preserve on interrupt
148	+	class interrupt_context {
149	+	uint32 gpr[32];
150	+	uint32 pc;
151	+	uint32 lr;
152	+	uint32 ctr;
153	+	uint32 cr;
154	+	uint32 xer;
155	+	sheepshaver_cpu *cpu;
156	+	const char *where;
157	+	public:
158	+	interrupt_context(sheepshaver_cpu *_cpu, const char *_where);
159	+	~interrupt_context();
160	+	};
161	+
162		public:
163
164		// Constructor
#	Line 137 | Line 170 | public:
170		uint32 get_xer() const          { return xer().get(); }
171		void set_xer(uint32 v)          { xer().set(v); }
172
173	+	// Execute NATIVE_OP routine
174	+	void execute_native_op(uint32 native_op);
175	+
176		// Execute EMUL_OP routine
177		void execute_emul_op(uint32 emul_op);
178
#	Line 150 | Line 186 | public:
186		uint32 execute_macos_code(uint32 tvect, int nargs, uint32 const *args);
187
188		// Compile one instruction
189	<	virtual bool compile1(codegen_context_t & cg_context);
189	>	virtual int compile1(codegen_context_t & cg_context);
190
191		// Resource manager thunk
192		void get_resource(uint32 old_get_resource);
#	Line 221 | Line 257 | void sheepshaver_cpu::init_decoder()
257		}
258		}
259
224	–	// Forward declaration for native opcode handler
225	–	static void NativeOp(int selector);
226	–
260		/*              NativeOp instruction format:
261	<	+------------+--------------------------+--+----------+------------+
262	<	|      6     |                          |FN|    OP    |      2     |
263	<	+------------+--------------------------+--+----------+------------+
264	<	0         5 |6                       19 20 21      25 26        31
261	>	+------------+-------------------------+--+-----------+------------+
262	>	|      6     |                         |FN|    OP     |      2     |
263	>	+------------+-------------------------+--+-----------+------------+
264	>	0         5 |6                      18 19 20      25 26        31
265		*/
266
267	<	typedef bit_field< 20, 20 > FN_field;
268	<	typedef bit_field< 21, 25 > NATIVE_OP_field;
267	>	typedef bit_field< 19, 19 > FN_field;
268	>	typedef bit_field< 20, 25 > NATIVE_OP_field;
269		typedef bit_field< 26, 31 > EMUL_OP_field;
270
271	+	// "Native" EMUL_OP routines
272	+	#define GPR_A(REG) gpr(16 + (REG))
273	+	#define GPR_D(REG) gpr( 8 + (REG))
274	+
275	+	void sheepshaver_cpu::execute_emul_op_microseconds()
276	+	{
277	+	Microseconds(GPR_A(0), GPR_D(0));
278	+	}
279	+
280	+	void sheepshaver_cpu::execute_emul_op_idle_time_1()
281	+	{
282	+	// Sleep if no events pending
283	+	if (ReadMacInt32(0x14c) == 0)
284	+	Delay_usec(16667);
285	+	GPR_A(0) = ReadMacInt32(0x2b6);
286	+	}
287	+
288	+	void sheepshaver_cpu::execute_emul_op_idle_time_2()
289	+	{
290	+	// Sleep if no events pending
291	+	if (ReadMacInt32(0x14c) == 0)
292	+	Delay_usec(16667);
293	+	GPR_D(0) = (uint32)-2;
294	+	}
295	+
296	+	// Filter out EMUL_OP routines that only call native code
297	+	bool sheepshaver_cpu::filter_execute_emul_op(uint32 emul_op)
298	+	{
299	+	switch (emul_op) {
300	+	case OP_MICROSECONDS:
301	+	execute_emul_op_microseconds();
302	+	return true;
303	+	case OP_IDLE_TIME:
304	+	execute_emul_op_idle_time_1();
305	+	return true;
306	+	case OP_IDLE_TIME_2:
307	+	execute_emul_op_idle_time_2();
308	+	return true;
309	+	}
310	+	return false;
311	+	}
312	+
313		// Execute EMUL_OP routine
314		void sheepshaver_cpu::execute_emul_op(uint32 emul_op)
315		{
316	+	#if ENABLE_NATIVE_EMUL_OP
317	+	// First, filter out EMUL_OPs that can be executed without a mode switch
318	+	if (filter_execute_emul_op(emul_op))
319	+	return;
320	+	#endif
321	+
322		M68kRegisters r68;
323		WriteMacInt32(XLM_68K_R25, gpr(25));
324		WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
#	Line 275 | Line 356 | void sheepshaver_cpu::execute_sheep(uint
356		break;
357
358		case 2:         // EXEC_NATIVE
359	<	NativeOp(NATIVE_OP_field::extract(opcode));
359	>	execute_native_op(NATIVE_OP_field::extract(opcode));
360		if (FN_field::test(opcode))
361		pc() = lr();
362		else
#	Line 290 | Line 371 | void sheepshaver_cpu::execute_sheep(uint
371		}
372
373		// Compile one instruction
374	<	bool sheepshaver_cpu::compile1(codegen_context_t & cg_context)
374	>	int sheepshaver_cpu::compile1(codegen_context_t & cg_context)
375		{
376		#if PPC_ENABLE_JIT
377		const instr_info_t *ii = cg_context.instr_info;
378		if (ii->mnemo != PPC_I(SHEEP))
379	<	return false;
379	>	return COMPILE_FAILURE;
380
381	<	bool compiled = false;
381	>	int status = COMPILE_FAILURE;
382		powerpc_dyngen & dg = cg_context.codegen;
383		uint32 opcode = cg_context.opcode;
384
385		switch (opcode & 0x3f) {
386		case 0:         // EMUL_RETURN
387		dg.gen_invoke(QuitEmulator);
388	<	compiled = true;
388	>	status = COMPILE_CODE_OK;
389		break;
390
391		case 1:         // EXEC_RETURN
392		dg.gen_spcflags_set(SPCFLAG_CPU_EXEC_RETURN);
393	<	compiled = true;
393	>	// Don't check for pending interrupts, we do know we have to
394	>	// get out of this block ASAP
395	>	dg.gen_exec_return();
396	>	status = COMPILE_EPILOGUE_OK;
397		break;
398
399		case 2: {       // EXEC_NATIVE
400		uint32 selector = NATIVE_OP_field::extract(opcode);
401		switch (selector) {
402	+	#if !PPC_REENTRANT_JIT
403	+	// Filter out functions that may invoke Execute68k() or
404	+	// CallMacOS(), this would break reentrancy as they could
405	+	// invalidate the translation cache and even overwrite
406	+	// continuation code when we are done with them.
407		case NATIVE_PATCH_NAME_REGISTRY:
408		dg.gen_invoke(DoPatchNameRegistry);
409	<	compiled = true;
409	>	status = COMPILE_CODE_OK;
410		break;
411		case NATIVE_VIDEO_INSTALL_ACCEL:
412		dg.gen_invoke(VideoInstallAccel);
413	<	compiled = true;
413	>	status = COMPILE_CODE_OK;
414		break;
415		case NATIVE_VIDEO_VBL:
416		dg.gen_invoke(VideoVBL);
417	<	compiled = true;
417	>	status = COMPILE_CODE_OK;
418		break;
419		case NATIVE_GET_RESOURCE:
420		case NATIVE_GET_1_RESOURCE:
#	Line 343 | Line 432 | bool sheepshaver_cpu::compile1(codegen_c
432		typedef void (*func_t)(dyngen_cpu_base, uint32);
433		func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::get_resource).ptr();
434		dg.gen_invoke_CPU_im(func, old_get_resource);
435	<	compiled = true;
435	>	status = COMPILE_CODE_OK;
436		break;
437		}
438	+	case NATIVE_CHECK_LOAD_INVOC:
439	+	dg.gen_load_T0_GPR(3);
440	+	dg.gen_load_T1_GPR(4);
441	+	dg.gen_se_16_32_T1();
442	+	dg.gen_load_T2_GPR(5);
443	+	dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc);
444	+	status = COMPILE_CODE_OK;
445	+	break;
446	+	#endif
447		case NATIVE_DISABLE_INTERRUPT:
448		dg.gen_invoke(DisableInterrupt);
449	<	compiled = true;
449	>	status = COMPILE_CODE_OK;
450		break;
451		case NATIVE_ENABLE_INTERRUPT:
452		dg.gen_invoke(EnableInterrupt);
453	<	compiled = true;
453	>	status = COMPILE_CODE_OK;
454		break;
455	<	case NATIVE_CHECK_LOAD_INVOC:
455	>	case NATIVE_BITBLT:
456		dg.gen_load_T0_GPR(3);
457	<	dg.gen_load_T1_GPR(4);
458	<	dg.gen_se_16_32_T1();
459	<	dg.gen_load_T2_GPR(5);
460	<	dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc);
461	<	compiled = true;
457	>	dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt);
458	>	status = COMPILE_CODE_OK;
459	>	break;
460	>	case NATIVE_INVRECT:
461	>	dg.gen_load_T0_GPR(3);
462	>	dg.gen_invoke_T0((void (*)(uint32))NQD_invrect);
463	>	status = COMPILE_CODE_OK;
464	>	break;
465	>	case NATIVE_FILLRECT:
466	>	dg.gen_load_T0_GPR(3);
467	>	dg.gen_invoke_T0((void (*)(uint32))NQD_fillrect);
468	>	status = COMPILE_CODE_OK;
469		break;
470		}
471	<	if (FN_field::test(opcode)) {
472	<	if (compiled) {
471	>	// Could we fully translate this NativeOp?
472	>	if (status == COMPILE_CODE_OK) {
473	>	if (!FN_field::test(opcode))
474	>	cg_context.done_compile = false;
475	>	else {
476		dg.gen_load_A0_LR();
477		dg.gen_set_PC_A0();
478	+	cg_context.done_compile = true;
479		}
480	<	cg_context.done_compile = true;
480	>	break;
481		}
482	<	else
482	>	#if PPC_REENTRANT_JIT
483	>	// Try to execute NativeOp trampoline
484	>	if (!FN_field::test(opcode))
485	>	dg.gen_set_PC_im(cg_context.pc + 4);
486	>	else {
487	>	dg.gen_load_A0_LR();
488	>	dg.gen_set_PC_A0();
489	>	}
490	>	dg.gen_mov_32_T0_im(selector);
491	>	dg.gen_jmp(native_op_trampoline);
492	>	cg_context.done_compile = true;
493	>	status = COMPILE_EPILOGUE_OK;
494	>	break;
495	>	#endif
496	>	// Invoke NativeOp handler
497	>	if (!FN_field::test(opcode)) {
498	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
499	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
500	>	dg.gen_invoke_CPU_im(func, selector);
501		cg_context.done_compile = false;
502	+	status = COMPILE_CODE_OK;
503	+	}
504	+	// Otherwise, let it generate a call to execute_sheep() which
505	+	// will cause necessary updates to the program counter
506		break;
507		}
508
509		default: {      // EMUL_OP
510	+	uint32 emul_op = EMUL_OP_field::extract(opcode) - 3;
511	+	#if ENABLE_NATIVE_EMUL_OP
512	+	typedef void (*emul_op_func_t)(dyngen_cpu_base);
513	+	emul_op_func_t emul_op_func = 0;
514	+	switch (emul_op) {
515	+	case OP_MICROSECONDS:
516	+	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_microseconds).ptr();
517	+	break;
518	+	case OP_IDLE_TIME:
519	+	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_1).ptr();
520	+	break;
521	+	case OP_IDLE_TIME_2:
522	+	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_2).ptr();
523	+	break;
524	+	}
525	+	if (emul_op_func) {
526	+	dg.gen_invoke_CPU(emul_op_func);
527	+	cg_context.done_compile = false;
528	+	status = COMPILE_CODE_OK;
529	+	break;
530	+	}
531	+	#endif
532	+	#if PPC_REENTRANT_JIT
533	+	// Try to execute EmulOp trampoline
534	+	dg.gen_set_PC_im(cg_context.pc + 4);
535	+	dg.gen_mov_32_T0_im(emul_op);
536	+	dg.gen_jmp(emul_op_trampoline);
537	+	cg_context.done_compile = true;
538	+	status = COMPILE_EPILOGUE_OK;
539	+	break;
540	+	#endif
541	+	// Invoke EmulOp handler
542		typedef void (*func_t)(dyngen_cpu_base, uint32);
543		func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
544	<	dg.gen_invoke_CPU_im(func, EMUL_OP_field::extract(opcode) - 3);
544	>	dg.gen_invoke_CPU_im(func, emul_op);
545		cg_context.done_compile = false;
546	<	compiled = true;
546	>	status = COMPILE_CODE_OK;
547		break;
548		}
549		}
550	<	return compiled;
550	>	return status;
551	>	#endif
552	>	return COMPILE_FAILURE;
553	>	}
554	>
555	>	// CPU context to preserve on interrupt
556	>	sheepshaver_cpu::interrupt_context::interrupt_context(sheepshaver_cpu *_cpu, const char *_where)
557	>	{
558	>	#if SAFE_INTERRUPT_PPC >= 2
559	>	cpu = _cpu;
560	>	where = _where;
561	>
562	>	// Save interrupt context
563	>	memcpy(&gpr[0], &cpu->gpr(0), sizeof(gpr));
564	>	pc = cpu->pc();
565	>	lr = cpu->lr();
566	>	ctr = cpu->ctr();
567	>	cr = cpu->get_cr();
568	>	xer = cpu->get_xer();
569	>	#endif
570	>	}
571	>
572	>	sheepshaver_cpu::interrupt_context::~interrupt_context()
573	>	{
574	>	#if SAFE_INTERRUPT_PPC >= 2
575	>	// Check whether CPU context was preserved by interrupt
576	>	if (memcmp(&gpr[0], &cpu->gpr(0), sizeof(gpr)) != 0) {
577	>	printf("FATAL: %s: interrupt clobbers registers\n", where);
578	>	for (int i = 0; i < 32; i++)
579	>	if (gpr[i] != cpu->gpr(i))
580	>	printf(" r%d: %08x -> %08x\n", i, gpr[i], cpu->gpr(i));
581	>	}
582	>	if (pc != cpu->pc())
583	>	printf("FATAL: %s: interrupt clobbers PC\n", where);
584	>	if (lr != cpu->lr())
585	>	printf("FATAL: %s: interrupt clobbers LR\n", where);
586	>	if (ctr != cpu->ctr())
587	>	printf("FATAL: %s: interrupt clobbers CTR\n", where);
588	>	if (cr != cpu->get_cr())
589	>	printf("FATAL: %s: interrupt clobbers CR\n", where);
590	>	if (xer != cpu->get_xer())
591	>	printf("FATAL: %s: interrupt clobbers XER\n", where);
592		#endif
389	–	return false;
593		}
594
595		// Handle MacOS interrupt
#	Line 397 | Line 600 | void sheepshaver_cpu::interrupt(uint32 e
600		const clock_t interrupt_start = clock();
601		#endif
602
603	<	#if !MULTICORE_CPU
603	>	#if SAFE_INTERRUPT_PPC
604	>	static int depth = 0;
605	>	if (depth != 0)
606	>	printf("FATAL: sheepshaver_cpu::interrupt() called more than once: %d\n", depth);
607	>	depth++;
608	>	#endif
609	>
610		// Save program counters and branch registers
611		uint32 saved_pc = pc();
612		uint32 saved_lr = lr();
613		uint32 saved_ctr= ctr();
614		uint32 saved_sp = gpr(1);
406	–	#endif
615
616		// Initialize stack pointer to SheepShaver alternate stack base
617		gpr(1) = SignalStackBase() - 64;
#	Line 443 | Line 651 | void sheepshaver_cpu::interrupt(uint32 e
651		// Enter nanokernel
652		execute(entry);
653
446	–	#if !MULTICORE_CPU
654		// Restore program counters and branch registers
655		pc() = saved_pc;
656		lr() = saved_lr;
657		ctr()= saved_ctr;
658		gpr(1) = saved_sp;
452	–	#endif
659
660		#if EMUL_TIME_STATS
661		interrupt_time += (clock() - interrupt_start);
662		#endif
663	+
664	+	#if SAFE_INTERRUPT_PPC
665	+	depth--;
666	+	#endif
667		}
668
669		// Execute 68k routine
#	Line 647 | Line 857 | inline void sheepshaver_cpu::get_resourc
857		*              SheepShaver CPU engine interface
858		**/
859
860	<	static sheepshaver_cpu *main_cpu = NULL;                // CPU emulator to handle usual control flow
861	<	static sheepshaver_cpu *interrupt_cpu = NULL;   // CPU emulator to handle interrupts
652	<	static sheepshaver_cpu *current_cpu = NULL;             // Current CPU emulator context
860	>	// PowerPC CPU emulator
861	>	static sheepshaver_cpu *ppc_cpu = NULL;
862
863		void FlushCodeCache(uintptr start, uintptr end)
864		{
865		D(bug("FlushCodeCache(%08x, %08x)\n", start, end));
866	<	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
866	>	ppc_cpu->invalidate_cache_range(start, end);
867		}
868
869		// Dump PPC registers
870		static void dump_registers(void)
871		{
872	<	current_cpu->dump_registers();
872	>	ppc_cpu->dump_registers();
873		}
874
875		// Dump log
876		static void dump_log(void)
877		{
878	<	current_cpu->dump_log();
878	>	ppc_cpu->dump_log();
879		}
880
881		/*
#	Line 706 | Line 898 | static sigsegv_return_t sigsegv_handler(
898		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
899
900		// Get program counter of target CPU
901	<	sheepshaver_cpu * const cpu = current_cpu;
901	>	sheepshaver_cpu * const cpu = ppc_cpu;
902		const uint32 pc = cpu->pc();
903
904		// Fault in Mac ROM or RAM?
#	Line 746 | Line 938 | static sigsegv_return_t sigsegv_handler(
938		printf("SIGSEGV\n");
939		printf("  pc %p\n", fault_instruction);
940		printf("  ea %p\n", fault_address);
749	–	printf(" cpu %s\n", current_cpu == main_cpu ? "main" : "interrupts");
941		dump_registers();
942	<	current_cpu->dump_log();
942	>	ppc_cpu->dump_log();
943		enter_mon();
944		QuitEmulator();
945
#	Line 758 | Line 949 | static sigsegv_return_t sigsegv_handler(
949		void init_emul_ppc(void)
950		{
951		// Initialize main CPU emulator
952	<	main_cpu = new sheepshaver_cpu();
953	<	main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
954	<	main_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
952	>	ppc_cpu = new sheepshaver_cpu();
953	>	ppc_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
954	>	ppc_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
955		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
956
766	–	#if MULTICORE_CPU
767	–	// Initialize alternate CPU emulator to handle interrupts
768	–	interrupt_cpu = new sheepshaver_cpu();
769	–	#endif
770	–
957		// Install the handler for SIGSEGV
958		sigsegv_install_handler(sigsegv_handler);
959
#	Line 812 | Line 998 | void exit_emul_ppc(void)
998		printf("\n");
999		#endif
1000
1001	<	delete main_cpu;
816	<	#if MULTICORE_CPU
817	<	delete interrupt_cpu;
818	<	#endif
1001	>	delete ppc_cpu;
1002		}
1003
1004	+	#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
1005	+	// Initialize EmulOp trampolines
1006	+	void init_emul_op_trampolines(basic_dyngen & dg)
1007	+	{
1008	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
1009	+	func_t func;
1010	+
1011	+	// EmulOp
1012	+	emul_op_trampoline = dg.gen_start();
1013	+	func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
1014	+	dg.gen_invoke_CPU_T0(func);
1015	+	dg.gen_exec_return();
1016	+	dg.gen_end();
1017	+
1018	+	// NativeOp
1019	+	native_op_trampoline = dg.gen_start();
1020	+	func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
1021	+	dg.gen_invoke_CPU_T0(func);
1022	+	dg.gen_exec_return();
1023	+	dg.gen_end();
1024	+
1025	+	D(bug("EmulOp trampoline:   %p\n", emul_op_trampoline));
1026	+	D(bug("NativeOp trampoline: %p\n", native_op_trampoline));
1027	+	}
1028	+	#endif
1029	+
1030		/*
1031		*  Emulation loop
1032		*/
1033
1034		void emul_ppc(uint32 entry)
1035		{
827	–	current_cpu = main_cpu;
1036		#if 0
1037	<	current_cpu->start_log();
1037	>	ppc_cpu->start_log();
1038		#endif
1039		// start emulation loop and enable code translation or caching
1040	<	current_cpu->execute(entry);
1040	>	ppc_cpu->execute(entry);
1041		}
1042
1043		/*
1044		*  Handle PowerPC interrupt
1045		*/
1046
839	–	#if ASYNC_IRQ
840	–	void HandleInterrupt(void)
841	–	{
842	–	main_cpu->handle_interrupt();
843	–	}
844	–	#else
1047		void TriggerInterrupt(void)
1048		{
1049		#if 0
1050		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1051		#else
1052		// Trigger interrupt to main cpu only
1053	<	if (main_cpu)
1054	<	main_cpu->trigger_interrupt();
1053	>	if (ppc_cpu)
1054	>	ppc_cpu->trigger_interrupt();
1055		#endif
1056		}
855	–	#endif
1057
1058		void sheepshaver_cpu::handle_interrupt(void)
1059		{
#	Line 864 | Line 1065 | void sheepshaver_cpu::handle_interrupt(v
1065		if (InterruptFlags == 0)
1066		return;
1067
1068	+	// Current interrupt nest level
1069	+	static int interrupt_depth = 0;
1070	+	++interrupt_depth;
1071	+
1072		// Disable MacOS stack sniffer
1073		WriteMacInt32(0x110, 0);
1074
#	Line 871 | Line 1076 | void sheepshaver_cpu::handle_interrupt(v
1076		switch (ReadMacInt32(XLM_RUN_MODE)) {
1077		case MODE_68K:
1078		// 68k emulator active, trigger 68k interrupt level 1
874	–	assert(current_cpu == main_cpu);
1079		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1080		set_cr(get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
1081		break;
#	Line 879 | Line 1083 | void sheepshaver_cpu::handle_interrupt(v
1083		#if INTERRUPTS_IN_NATIVE_MODE
1084		case MODE_NATIVE:
1085		// 68k emulator inactive, in nanokernel?
1086	<	assert(current_cpu == main_cpu);
1087	<	if (gpr(1) != KernelDataAddr) {
1086	>	if (gpr(1) != KernelDataAddr && interrupt_depth == 1) {
1087	>	interrupt_context ctx(this, "PowerPC mode");
1088	>
1089		// Prepare for 68k interrupt level 1
1090		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1091		WriteMacInt32(tswap32(kernel_data->v[0x658 >> 2]) + 0xdc,
#	Line 889 | Line 1094 | void sheepshaver_cpu::handle_interrupt(v
1094
1095		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1096		DisableInterrupt();
892	–	cpu_push(interrupt_cpu);
1097		if (ROMType == ROMTYPE_NEWWORLD)
1098	<	current_cpu->interrupt(ROM_BASE + 0x312b1c);
1098	>	ppc_cpu->interrupt(ROM_BASE + 0x312b1c);
1099		else
1100	<	current_cpu->interrupt(ROM_BASE + 0x312a3c);
897	<	cpu_pop();
1100	>	ppc_cpu->interrupt(ROM_BASE + 0x312a3c);
1101		}
1102		break;
1103		#endif
#	Line 903 | Line 1106 | void sheepshaver_cpu::handle_interrupt(v
1106		case MODE_EMUL_OP:
1107		// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
1108		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1109	+	interrupt_context ctx(this, "68k mode");
1110		#if 1
1111		// Execute full 68k interrupt routine
1112		M68kRegisters r;
#	Line 932 | Line 1136 | void sheepshaver_cpu::handle_interrupt(v
1136		break;
1137		#endif
1138		}
1139	+
1140	+	// We are done with this interrupt
1141	+	--interrupt_depth;
1142		}
1143
1144		static void get_resource(void);
#	Line 940 | Line 1147 | static void get_ind_resource(void);
1147		static void get_1_ind_resource(void);
1148		static void r_get_resource(void);
1149
1150	<	#define GPR(REG) current_cpu->gpr(REG)
1151	<
945	<	static void NativeOp(int selector)
1150	>	// Execute NATIVE_OP routine
1151	>	void sheepshaver_cpu::execute_native_op(uint32 selector)
1152		{
1153		#if EMUL_TIME_STATS
1154		native_exec_count++;
#	Line 960 | Line 1166 | static void NativeOp(int selector)
1166		VideoVBL();
1167		break;
1168		case NATIVE_VIDEO_DO_DRIVER_IO:
1169	<	GPR(3) = (int32)(int16)VideoDoDriverIO((void *)GPR(3), (void *)GPR(4),
1170	<	(void *)GPR(5), GPR(6), GPR(7));
1169	>	gpr(3) = (int32)(int16)VideoDoDriverIO((void *)gpr(3), (void *)gpr(4),
1170	>	(void *)gpr(5), gpr(6), gpr(7));
1171		break;
1172		#ifdef WORDS_BIGENDIAN
1173		case NATIVE_ETHER_IRQ:
1174		EtherIRQ();
1175		break;
1176		case NATIVE_ETHER_INIT:
1177	<	GPR(3) = InitStreamModule((void *)GPR(3));
1177	>	gpr(3) = InitStreamModule((void *)gpr(3));
1178		break;
1179		case NATIVE_ETHER_TERM:
1180		TerminateStreamModule();
1181		break;
1182		case NATIVE_ETHER_OPEN:
1183	<	GPR(3) = ether_open((queue_t *)GPR(3), (void *)GPR(4), GPR(5), GPR(6), (void*)GPR(7));
1183	>	gpr(3) = ether_open((queue_t *)gpr(3), (void *)gpr(4), gpr(5), gpr(6), (void*)gpr(7));
1184		break;
1185		case NATIVE_ETHER_CLOSE:
1186	<	GPR(3) = ether_close((queue_t *)GPR(3), GPR(4), (void *)GPR(5));
1186	>	gpr(3) = ether_close((queue_t *)gpr(3), gpr(4), (void *)gpr(5));
1187		break;
1188		case NATIVE_ETHER_WPUT:
1189	<	GPR(3) = ether_wput((queue_t *)GPR(3), (mblk_t *)GPR(4));
1189	>	gpr(3) = ether_wput((queue_t *)gpr(3), (mblk_t *)gpr(4));
1190		break;
1191		case NATIVE_ETHER_RSRV:
1192	<	GPR(3) = ether_rsrv((queue_t *)GPR(3));
1192	>	gpr(3) = ether_rsrv((queue_t *)gpr(3));
1193		break;
1194		#else
1195		case NATIVE_ETHER_INIT:
1196		// FIXME: needs more complicated thunks
1197	<	GPR(3) = false;
1197	>	gpr(3) = false;
1198		break;
1199		#endif
1200		case NATIVE_SYNC_HOOK:
1201	<	GPR(3) = NQD_sync_hook(GPR(3));
1201	>	gpr(3) = NQD_sync_hook(gpr(3));
1202		break;
1203		case NATIVE_BITBLT_HOOK:
1204	<	GPR(3) = NQD_bitblt_hook(GPR(3));
1204	>	gpr(3) = NQD_bitblt_hook(gpr(3));
1205		break;
1206		case NATIVE_BITBLT:
1207	<	NQD_bitblt(GPR(3));
1207	>	NQD_bitblt(gpr(3));
1208		break;
1209		case NATIVE_FILLRECT_HOOK:
1210	<	GPR(3) = NQD_fillrect_hook(GPR(3));
1210	>	gpr(3) = NQD_fillrect_hook(gpr(3));
1211		break;
1212		case NATIVE_INVRECT:
1213	<	NQD_invrect(GPR(3));
1213	>	NQD_invrect(gpr(3));
1214		break;
1215		case NATIVE_FILLRECT:
1216	<	NQD_fillrect(GPR(3));
1216	>	NQD_fillrect(gpr(3));
1217		break;
1218		case NATIVE_SERIAL_NOTHING:
1219		case NATIVE_SERIAL_OPEN:
#	Line 1026 | Line 1232 | static void NativeOp(int selector)
1232		SerialStatus,
1233		SerialClose
1234		};
1235	<	GPR(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](GPR(3), GPR(4));
1235	>	gpr(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](gpr(3), gpr(4));
1236		break;
1237		}
1238		case NATIVE_GET_RESOURCE:
#	Line 1036 | Line 1242 | static void NativeOp(int selector)
1242		case NATIVE_R_GET_RESOURCE: {
1243		typedef void (*GetResourceCallback)(void);
1244		static const GetResourceCallback get_resource_callbacks[] = {
1245	<	get_resource,
1246	<	get_1_resource,
1247	<	get_ind_resource,
1248	<	get_1_ind_resource,
1249	<	r_get_resource
1245	>	::get_resource,
1246	>	::get_1_resource,
1247	>	::get_ind_resource,
1248	>	::get_1_ind_resource,
1249	>	::r_get_resource
1250		};
1251		get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1252		break;
#	Line 1052 | Line 1258 | static void NativeOp(int selector)
1258		EnableInterrupt();
1259		break;
1260		case NATIVE_MAKE_EXECUTABLE:
1261	<	MakeExecutable(0, (void *)GPR(4), GPR(5));
1261	>	MakeExecutable(0, (void *)gpr(4), gpr(5));
1262		break;
1263		case NATIVE_CHECK_LOAD_INVOC:
1264	<	check_load_invoc(GPR(3), GPR(4), GPR(5));
1264	>	check_load_invoc(gpr(3), gpr(4), gpr(5));
1265		break;
1266		default:
1267		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
#	Line 1076 | Line 1282 | static void NativeOp(int selector)
1282
1283		void Execute68k(uint32 pc, M68kRegisters *r)
1284		{
1285	<	current_cpu->execute_68k(pc, r);
1285	>	ppc_cpu->execute_68k(pc, r);
1286		}
1287
1288		/*
#	Line 1099 | Line 1305 | void Execute68kTrap(uint16 trap, M68kReg
1305
1306		uint32 call_macos(uint32 tvect)
1307		{
1308	<	return current_cpu->execute_macos_code(tvect, 0, NULL);
1308	>	return ppc_cpu->execute_macos_code(tvect, 0, NULL);
1309		}
1310
1311		uint32 call_macos1(uint32 tvect, uint32 arg1)
1312		{
1313		const uint32 args[] = { arg1 };
1314	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1314	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1315		}
1316
1317		uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2)
1318		{
1319		const uint32 args[] = { arg1, arg2 };
1320	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1320	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1321		}
1322
1323		uint32 call_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3)
1324		{
1325		const uint32 args[] = { arg1, arg2, arg3 };
1326	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1326	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1327		}
1328
1329		uint32 call_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4)
1330		{
1331		const uint32 args[] = { arg1, arg2, arg3, arg4 };
1332	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1332	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1333		}
1334
1335		uint32 call_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5)
1336		{
1337		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5 };
1338	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1338	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1339		}
1340
1341		uint32 call_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6)
1342		{
1343		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6 };
1344	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1344	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1345		}
1346
1347		uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7)
1348		{
1349		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 };
1350	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1350	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1351		}
1352
1353		/*
#	Line 1150 | Line 1356 | uint32 call_macos7(uint32 tvect, uint32
1356
1357		void get_resource(void)
1358		{
1359	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1359	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1360		}
1361
1362		void get_1_resource(void)
1363		{
1364	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1364	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1365		}
1366
1367		void get_ind_resource(void)
1368		{
1369	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1369	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1370		}
1371
1372		void get_1_ind_resource(void)
1373		{
1374	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1374	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1375		}
1376
1377		void r_get_resource(void)
1378		{
1379	<	current_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1379	>	ppc_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1380		}

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