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

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.39 by gbeauche, 2004-05-20T11:05:30Z vs.
Revision 1.47 by gbeauche, 2004-06-24T15:37:26Z

#	Line 43 | Line 43
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 52 | 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 84 | 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
87	–	// Enable multicore (main/interrupts) cpu emulation?
88	–	#define MULTICORE_CPU (ASYNC_IRQ ? 1 : 0)
89	–
93		// Enable interrupt routine safety checks?
94		#define SAFE_INTERRUPT_PPC 1
95
#	Line 447 | Line 450 | int sheepshaver_cpu::compile1(codegen_co
450		status = COMPILE_CODE_OK;
451		break;
452		#endif
450	–	case NATIVE_DISABLE_INTERRUPT:
451	–	dg.gen_invoke(DisableInterrupt);
452	–	status = COMPILE_CODE_OK;
453	–	break;
454	–	case NATIVE_ENABLE_INTERRUPT:
455	–	dg.gen_invoke(EnableInterrupt);
456	–	status = COMPILE_CODE_OK;
457	–	break;
453		case NATIVE_BITBLT:
454		dg.gen_load_T0_GPR(3);
455		dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt);
#	Line 472 | Line 467 | int sheepshaver_cpu::compile1(codegen_co
467		break;
468		}
469		// Could we fully translate this NativeOp?
470	<	if (FN_field::test(opcode)) {
471	<	if (status != COMPILE_FAILURE) {
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		}
480	–	cg_context.done_compile = true;
481	–	break;
482	–	}
483	–	else if (status != COMPILE_FAILURE) {
484	–	cg_context.done_compile = false;
478		break;
479		}
480		#if PPC_REENTRANT_JIT
481		// Try to execute NativeOp trampoline
482	<	dg.gen_set_PC_im(cg_context.pc + 4);
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;
#	Line 494 | Line 492 | int sheepshaver_cpu::compile1(codegen_co
492		break;
493		#endif
494		// Invoke NativeOp handler
495	<	typedef void (*func_t)(dyngen_cpu_base, uint32);
496	<	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
497	<	dg.gen_invoke_CPU_im(func, selector);
498	<	cg_context.done_compile = false;
499	<	status = COMPILE_CODE_OK;
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
#	Line 592 | Line 594 | sheepshaver_cpu::interrupt_context::~int
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
#	Line 603 | Line 605 | void sheepshaver_cpu::interrupt(uint32 e
605		depth++;
606		#endif
607
606	–	#if !MULTICORE_CPU
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);
612	–	#endif
613
614		// Initialize stack pointer to SheepShaver alternate stack base
615		gpr(1) = SignalStackBase() - 64;
#	Line 649 | Line 649 | void sheepshaver_cpu::interrupt(uint32 e
649		// Enter nanokernel
650		execute(entry);
651
652	–	#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;
658	–	#endif
657
658		#if EMUL_TIME_STATS
659		interrupt_time += (clock() - interrupt_start);
#	Line 857 | 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
862	<	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);
868	<	#if MULTICORE_CPU
869	<	interrupt_cpu->invalidate_cache_range(start, end);
870	<	#endif
871	<	}
872	<
873	<	static inline void cpu_push(sheepshaver_cpu *new_cpu)
874	<	{
875	<	#if MULTICORE_CPU
876	<	current_cpu = new_cpu;
877	<	#endif
878	<	}
879	<
880	<	static inline void cpu_pop()
881	<	{
882	<	#if MULTICORE_CPU
883	<	current_cpu = main_cpu;
884	<	#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		/*
#	Line 916 | 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 940 | 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 956 | 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);
959	–	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 968 | 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
976	–	#if MULTICORE_CPU
977	–	// Initialize alternate CPU emulator to handle interrupts
978	–	interrupt_cpu = new sheepshaver_cpu();
979	–	#endif
980	–
961		// Install the handler for SIGSEGV
962		sigsegv_install_handler(sigsegv_handler);
963
#	Line 1006 | Line 986 | void exit_emul_ppc(void)
986		printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
987		printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
988		(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
989	+	printf("Total ppc interrupt count: %d (%2.1f %%)\n", ppc_interrupt_count,
990	+	(double(ppc_interrupt_count) * 100.0) / double(interrupt_count));
991
992		#define PRINT_STATS(LABEL, VAR_PREFIX) do {                                                             \
993		printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count);             \
#	Line 1022 | Line 1004 | void exit_emul_ppc(void)
1004		printf("\n");
1005		#endif
1006
1007	<	delete main_cpu;
1026	<	#if MULTICORE_CPU
1027	<	delete interrupt_cpu;
1028	<	#endif
1007	>	delete ppc_cpu;
1008		}
1009
1010		#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
#	Line 1060 | Line 1039 | void init_emul_op_trampolines(basic_dyng
1039
1040		void emul_ppc(uint32 entry)
1041		{
1063	–	current_cpu = main_cpu;
1042		#if 0
1043	<	current_cpu->start_log();
1043	>	ppc_cpu->start_log();
1044		#endif
1045		// start emulation loop and enable code translation or caching
1046	<	current_cpu->execute(entry);
1046	>	ppc_cpu->execute(entry);
1047		}
1048
1049		/*
1050		*  Handle PowerPC interrupt
1051		*/
1052
1075	–	#if ASYNC_IRQ
1076	–	void HandleInterrupt(void)
1077	–	{
1078	–	main_cpu->handle_interrupt();
1079	–	}
1080	–	#else
1053		void TriggerInterrupt(void)
1054		{
1055		#if 0
1056		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1057		#else
1058		// Trigger interrupt to main cpu only
1059	<	if (main_cpu)
1060	<	main_cpu->trigger_interrupt();
1059	>	if (ppc_cpu)
1060	>	ppc_cpu->trigger_interrupt();
1061		#endif
1062		}
1091	–	#endif
1063
1064		void sheepshaver_cpu::handle_interrupt(void)
1065		{
1066	+	#ifdef USE_SDL_VIDEO
1067	+	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1068	+	SDL_PumpEvents();
1069	+	#endif
1070	+
1071		// Do nothing if interrupts are disabled
1072	<	if (*(int32 *)XLM_IRQ_NEST > 0)
1072	>	if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
1073		return;
1074
1075	<	// Do nothing if there is no interrupt pending
1076	<	if (InterruptFlags == 0)
1077	<	return;
1075	>	// Current interrupt nest level
1076	>	static int interrupt_depth = 0;
1077	>	++interrupt_depth;
1078	>	#if EMUL_TIME_STATS
1079	>	interrupt_count++;
1080	>	#endif
1081
1082		// Disable MacOS stack sniffer
1083		WriteMacInt32(0x110, 0);
#	Line 1107 | Line 1086 | void sheepshaver_cpu::handle_interrupt(v
1086		switch (ReadMacInt32(XLM_RUN_MODE)) {
1087		case MODE_68K:
1088		// 68k emulator active, trigger 68k interrupt level 1
1110	–	assert(current_cpu == main_cpu);
1089		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1090		set_cr(get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
1091		break;
#	Line 1115 | Line 1093 | void sheepshaver_cpu::handle_interrupt(v
1093		#if INTERRUPTS_IN_NATIVE_MODE
1094		case MODE_NATIVE:
1095		// 68k emulator inactive, in nanokernel?
1096	<	assert(current_cpu == main_cpu);
1119	<	if (gpr(1) != KernelDataAddr) {
1096	>	if (gpr(1) != KernelDataAddr && interrupt_depth == 1) {
1097		interrupt_context ctx(this, "PowerPC mode");
1098
1099		// Prepare for 68k interrupt level 1
#	Line 1127 | Line 1104 | void sheepshaver_cpu::handle_interrupt(v
1104
1105		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1106		DisableInterrupt();
1130	–	cpu_push(interrupt_cpu);
1107		if (ROMType == ROMTYPE_NEWWORLD)
1108	<	current_cpu->interrupt(ROM_BASE + 0x312b1c);
1108	>	ppc_cpu->interrupt(ROM_BASE + 0x312b1c);
1109		else
1110	<	current_cpu->interrupt(ROM_BASE + 0x312a3c);
1135	<	cpu_pop();
1110	>	ppc_cpu->interrupt(ROM_BASE + 0x312a3c);
1111		}
1112		break;
1113		#endif
#	Line 1142 | Line 1117 | void sheepshaver_cpu::handle_interrupt(v
1117		// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
1118		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1119		interrupt_context ctx(this, "68k mode");
1120	+	#if EMUL_TIME_STATS
1121	+	const clock_t interrupt_start = clock();
1122	+	#endif
1123		#if 1
1124		// Execute full 68k interrupt routine
1125		M68kRegisters r;
#	Line 1167 | Line 1145 | void sheepshaver_cpu::handle_interrupt(v
1145		}
1146		}
1147		#endif
1148	+	#if EMUL_TIME_STATS
1149	+	interrupt_time += (clock() - interrupt_start);
1150	+	#endif
1151		}
1152		break;
1153		#endif
1154		}
1155	+
1156	+	// We are done with this interrupt
1157	+	--interrupt_depth;
1158		}
1159
1160		static void get_resource(void);
#	Line 1283 | Line 1267 | void sheepshaver_cpu::execute_native_op(
1267		get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1268		break;
1269		}
1286	–	case NATIVE_DISABLE_INTERRUPT:
1287	–	DisableInterrupt();
1288	–	break;
1289	–	case NATIVE_ENABLE_INTERRUPT:
1290	–	EnableInterrupt();
1291	–	break;
1270		case NATIVE_MAKE_EXECUTABLE:
1271		MakeExecutable(0, (void *)gpr(4), gpr(5));
1272		break;
#	Line 1314 | Line 1292 | void sheepshaver_cpu::execute_native_op(
1292
1293		void Execute68k(uint32 pc, M68kRegisters *r)
1294		{
1295	<	current_cpu->execute_68k(pc, r);
1295	>	ppc_cpu->execute_68k(pc, r);
1296		}
1297
1298		/*
#	Line 1337 | Line 1315 | void Execute68kTrap(uint16 trap, M68kReg
1315
1316		uint32 call_macos(uint32 tvect)
1317		{
1318	<	return current_cpu->execute_macos_code(tvect, 0, NULL);
1318	>	return ppc_cpu->execute_macos_code(tvect, 0, NULL);
1319		}
1320
1321		uint32 call_macos1(uint32 tvect, uint32 arg1)
1322		{
1323		const uint32 args[] = { arg1 };
1324	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1324	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1325		}
1326
1327		uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2)
1328		{
1329		const uint32 args[] = { arg1, arg2 };
1330	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1330	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1331		}
1332
1333		uint32 call_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3)
1334		{
1335		const uint32 args[] = { arg1, arg2, arg3 };
1336	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1336	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1337		}
1338
1339		uint32 call_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4)
1340		{
1341		const uint32 args[] = { arg1, arg2, arg3, arg4 };
1342	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1342	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1343		}
1344
1345		uint32 call_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5)
1346		{
1347		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5 };
1348	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1348	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1349		}
1350
1351		uint32 call_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6)
1352		{
1353		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6 };
1354	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1354	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1355		}
1356
1357		uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7)
1358		{
1359		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 };
1360	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1360	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1361		}
1362
1363		/*
#	Line 1388 | Line 1366 | uint32 call_macos7(uint32 tvect, uint32
1366
1367		void get_resource(void)
1368		{
1369	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1369	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1370		}
1371
1372		void get_1_resource(void)
1373		{
1374	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1374	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1375		}
1376
1377		void get_ind_resource(void)
1378		{
1379	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1379	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1380		}
1381
1382		void get_1_ind_resource(void)
1383		{
1384	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1384	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1385		}
1386
1387		void r_get_resource(void)
1388		{
1389	<	current_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1389	>	ppc_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1390		}

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