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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 1.46 by gbeauche, 2004-06-22T17:10:08Z

#	Line 52 | Line 52
52		#include "debug.h"
53
54		// Emulation time statistics
55	<	#define EMUL_TIME_STATS 1
55	>	#ifndef EMUL_TIME_STATS
56	>	#define EMUL_TIME_STATS 0
57	>	#endif
58
59		#if EMUL_TIME_STATS
60		static clock_t emul_start_time;
61	<	static uint32 interrupt_count = 0;
61	>	static uint32 interrupt_count = 0, ppc_interrupt_count = 0;
62		static clock_t interrupt_time = 0;
63		static uint32 exec68k_count = 0;
64		static clock_t exec68k_time = 0;
#	Line 84 | Line 86 | extern "C" void check_load_invoc(uint32
86		// PowerPC EmulOp to exit from emulation looop
87		const uint32 POWERPC_EXEC_RETURN = POWERPC_EMUL_OP | 1;
88
87	–	// Enable multicore (main/interrupts) cpu emulation?
88	–	#define MULTICORE_CPU (ASYNC_IRQ ? 1 : 0)
89	–
89		// Enable interrupt routine safety checks?
90		#define SAFE_INTERRUPT_PPC 1
91
#	Line 447 | Line 446 | int sheepshaver_cpu::compile1(codegen_co
446		status = COMPILE_CODE_OK;
447		break;
448		#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;
449		case NATIVE_BITBLT:
450		dg.gen_load_T0_GPR(3);
451		dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt);
#	Line 472 | Line 463 | int sheepshaver_cpu::compile1(codegen_co
463		break;
464		}
465		// Could we fully translate this NativeOp?
466	<	if (FN_field::test(opcode)) {
467	<	if (status != COMPILE_FAILURE) {
466	>	if (status == COMPILE_CODE_OK) {
467	>	if (!FN_field::test(opcode))
468	>	cg_context.done_compile = false;
469	>	else {
470		dg.gen_load_A0_LR();
471		dg.gen_set_PC_A0();
472	+	cg_context.done_compile = true;
473		}
480	–	cg_context.done_compile = true;
481	–	break;
482	–	}
483	–	else if (status != COMPILE_FAILURE) {
484	–	cg_context.done_compile = false;
474		break;
475		}
476		#if PPC_REENTRANT_JIT
477		// Try to execute NativeOp trampoline
478	<	dg.gen_set_PC_im(cg_context.pc + 4);
478	>	if (!FN_field::test(opcode))
479	>	dg.gen_set_PC_im(cg_context.pc + 4);
480	>	else {
481	>	dg.gen_load_A0_LR();
482	>	dg.gen_set_PC_A0();
483	>	}
484		dg.gen_mov_32_T0_im(selector);
485		dg.gen_jmp(native_op_trampoline);
486		cg_context.done_compile = true;
#	Line 494 | Line 488 | int sheepshaver_cpu::compile1(codegen_co
488		break;
489		#endif
490		// Invoke NativeOp handler
491	<	typedef void (*func_t)(dyngen_cpu_base, uint32);
492	<	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
493	<	dg.gen_invoke_CPU_im(func, selector);
494	<	cg_context.done_compile = false;
495	<	status = COMPILE_CODE_OK;
491	>	if (!FN_field::test(opcode)) {
492	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
493	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
494	>	dg.gen_invoke_CPU_im(func, selector);
495	>	cg_context.done_compile = false;
496	>	status = COMPILE_CODE_OK;
497	>	}
498	>	// Otherwise, let it generate a call to execute_sheep() which
499	>	// will cause necessary updates to the program counter
500		break;
501		}
502
#	Line 592 | Line 590 | sheepshaver_cpu::interrupt_context::~int
590		void sheepshaver_cpu::interrupt(uint32 entry)
591		{
592		#if EMUL_TIME_STATS
593	<	interrupt_count++;
593	>	ppc_interrupt_count++;
594		const clock_t interrupt_start = clock();
595		#endif
596
#	Line 603 | Line 601 | void sheepshaver_cpu::interrupt(uint32 e
601		depth++;
602		#endif
603
606	–	#if !MULTICORE_CPU
604		// Save program counters and branch registers
605		uint32 saved_pc = pc();
606		uint32 saved_lr = lr();
607		uint32 saved_ctr= ctr();
608		uint32 saved_sp = gpr(1);
612	–	#endif
609
610		// Initialize stack pointer to SheepShaver alternate stack base
611		gpr(1) = SignalStackBase() - 64;
#	Line 649 | Line 645 | void sheepshaver_cpu::interrupt(uint32 e
645		// Enter nanokernel
646		execute(entry);
647
652	–	#if !MULTICORE_CPU
648		// Restore program counters and branch registers
649		pc() = saved_pc;
650		lr() = saved_lr;
651		ctr()= saved_ctr;
652		gpr(1) = saved_sp;
658	–	#endif
653
654		#if EMUL_TIME_STATS
655		interrupt_time += (clock() - interrupt_start);
#	Line 857 | Line 851 | inline void sheepshaver_cpu::get_resourc
851		*              SheepShaver CPU engine interface
852		**/
853
854	<	static sheepshaver_cpu *main_cpu = NULL;                // CPU emulator to handle usual control flow
855	<	static sheepshaver_cpu *interrupt_cpu = NULL;   // CPU emulator to handle interrupts
862	<	static sheepshaver_cpu *current_cpu = NULL;             // Current CPU emulator context
854	>	// PowerPC CPU emulator
855	>	static sheepshaver_cpu *ppc_cpu = NULL;
856
857		void FlushCodeCache(uintptr start, uintptr end)
858		{
859		D(bug("FlushCodeCache(%08x, %08x)\n", start, end));
860	<	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
860	>	ppc_cpu->invalidate_cache_range(start, end);
861		}
862
863		// Dump PPC registers
864		static void dump_registers(void)
865		{
866	<	current_cpu->dump_registers();
866	>	ppc_cpu->dump_registers();
867		}
868
869		// Dump log
870		static void dump_log(void)
871		{
872	<	current_cpu->dump_log();
872	>	ppc_cpu->dump_log();
873		}
874
875		/*
#	Line 916 | Line 892 | static sigsegv_return_t sigsegv_handler(
892		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
893
894		// Get program counter of target CPU
895	<	sheepshaver_cpu * const cpu = current_cpu;
895	>	sheepshaver_cpu * const cpu = ppc_cpu;
896		const uint32 pc = cpu->pc();
897
898		// Fault in Mac ROM or RAM?
899	<	bool mac_fault = (pc >= ROM_BASE) && (pc < (ROM_BASE + ROM_AREA_SIZE)) || (pc >= RAMBase) && (pc < (RAMBase + RAMSize));
899	>	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));
900		if (mac_fault) {
901
902		// "VM settings" during MacOS 8 installation
#	Line 940 | Line 916 | static sigsegv_return_t sigsegv_handler(
916		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
917		else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
918		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
919	+
920	+	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
921	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(16) == 0xf3012002 || cpu->gpr(16) == 0xf3012000))
922	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
923	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
924	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
925
926		// Ignore writes to the zero page
927		else if ((uint32)(addr - SheepMem::ZeroPage()) < (uint32)SheepMem::PageSize())
#	Line 956 | 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);
959	–	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 968 | 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
976	–	#if MULTICORE_CPU
977	–	// Initialize alternate CPU emulator to handle interrupts
978	–	interrupt_cpu = new sheepshaver_cpu();
979	–	#endif
980	–
957		// Install the handler for SIGSEGV
958		sigsegv_install_handler(sigsegv_handler);
959
#	Line 1006 | Line 982 | void exit_emul_ppc(void)
982		printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
983		printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
984		(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
985	+	printf("Total ppc interrupt count: %d (%2.1f %%)\n", ppc_interrupt_count,
986	+	(double(ppc_interrupt_count) * 100.0) / double(interrupt_count));
987
988		#define PRINT_STATS(LABEL, VAR_PREFIX) do {                                                             \
989		printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count);             \
#	Line 1022 | Line 1000 | void exit_emul_ppc(void)
1000		printf("\n");
1001		#endif
1002
1003	<	delete main_cpu;
1026	<	#if MULTICORE_CPU
1027	<	delete interrupt_cpu;
1028	<	#endif
1003	>	delete ppc_cpu;
1004		}
1005
1006		#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
#	Line 1060 | Line 1035 | void init_emul_op_trampolines(basic_dyng
1035
1036		void emul_ppc(uint32 entry)
1037		{
1063	–	current_cpu = main_cpu;
1038		#if 0
1039	<	current_cpu->start_log();
1039	>	ppc_cpu->start_log();
1040		#endif
1041		// start emulation loop and enable code translation or caching
1042	<	current_cpu->execute(entry);
1042	>	ppc_cpu->execute(entry);
1043		}
1044
1045		/*
1046		*  Handle PowerPC interrupt
1047		*/
1048
1075	–	#if ASYNC_IRQ
1076	–	void HandleInterrupt(void)
1077	–	{
1078	–	main_cpu->handle_interrupt();
1079	–	}
1080	–	#else
1049		void TriggerInterrupt(void)
1050		{
1051		#if 0
1052		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1053		#else
1054		// Trigger interrupt to main cpu only
1055	<	if (main_cpu)
1056	<	main_cpu->trigger_interrupt();
1055	>	if (ppc_cpu)
1056	>	ppc_cpu->trigger_interrupt();
1057		#endif
1058		}
1091	–	#endif
1059
1060		void sheepshaver_cpu::handle_interrupt(void)
1061		{
1062		// Do nothing if interrupts are disabled
1063	<	if (*(int32 *)XLM_IRQ_NEST > 0)
1063	>	if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
1064		return;
1065
1066	<	// Do nothing if there is no interrupt pending
1067	<	if (InterruptFlags == 0)
1068	<	return;
1066	>	// Current interrupt nest level
1067	>	static int interrupt_depth = 0;
1068	>	++interrupt_depth;
1069	>	#if EMUL_TIME_STATS
1070	>	interrupt_count++;
1071	>	#endif
1072
1073		// Disable MacOS stack sniffer
1074		WriteMacInt32(0x110, 0);
#	Line 1107 | Line 1077 | void sheepshaver_cpu::handle_interrupt(v
1077		switch (ReadMacInt32(XLM_RUN_MODE)) {
1078		case MODE_68K:
1079		// 68k emulator active, trigger 68k interrupt level 1
1110	–	assert(current_cpu == main_cpu);
1080		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1081		set_cr(get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
1082		break;
#	Line 1115 | Line 1084 | void sheepshaver_cpu::handle_interrupt(v
1084		#if INTERRUPTS_IN_NATIVE_MODE
1085		case MODE_NATIVE:
1086		// 68k emulator inactive, in nanokernel?
1087	<	assert(current_cpu == main_cpu);
1119	<	if (gpr(1) != KernelDataAddr) {
1087	>	if (gpr(1) != KernelDataAddr && interrupt_depth == 1) {
1088		interrupt_context ctx(this, "PowerPC mode");
1089
1090		// Prepare for 68k interrupt level 1
#	Line 1127 | Line 1095 | void sheepshaver_cpu::handle_interrupt(v
1095
1096		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1097		DisableInterrupt();
1130	–	cpu_push(interrupt_cpu);
1098		if (ROMType == ROMTYPE_NEWWORLD)
1099	<	current_cpu->interrupt(ROM_BASE + 0x312b1c);
1099	>	ppc_cpu->interrupt(ROM_BASE + 0x312b1c);
1100		else
1101	<	current_cpu->interrupt(ROM_BASE + 0x312a3c);
1135	<	cpu_pop();
1101	>	ppc_cpu->interrupt(ROM_BASE + 0x312a3c);
1102		}
1103		break;
1104		#endif
#	Line 1142 | Line 1108 | void sheepshaver_cpu::handle_interrupt(v
1108		// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
1109		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1110		interrupt_context ctx(this, "68k mode");
1111	+	#if EMUL_TIME_STATS
1112	+	const clock_t interrupt_start = clock();
1113	+	#endif
1114		#if 1
1115		// Execute full 68k interrupt routine
1116		M68kRegisters r;
#	Line 1167 | Line 1136 | void sheepshaver_cpu::handle_interrupt(v
1136		}
1137		}
1138		#endif
1139	+	#if EMUL_TIME_STATS
1140	+	interrupt_time += (clock() - interrupt_start);
1141	+	#endif
1142		}
1143		break;
1144		#endif
1145		}
1146	+
1147	+	// We are done with this interrupt
1148	+	--interrupt_depth;
1149		}
1150
1151		static void get_resource(void);
#	Line 1283 | Line 1258 | void sheepshaver_cpu::execute_native_op(
1258		get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1259		break;
1260		}
1286	–	case NATIVE_DISABLE_INTERRUPT:
1287	–	DisableInterrupt();
1288	–	break;
1289	–	case NATIVE_ENABLE_INTERRUPT:
1290	–	EnableInterrupt();
1291	–	break;
1261		case NATIVE_MAKE_EXECUTABLE:
1262		MakeExecutable(0, (void *)gpr(4), gpr(5));
1263		break;
#	Line 1314 | Line 1283 | void sheepshaver_cpu::execute_native_op(
1283
1284		void Execute68k(uint32 pc, M68kRegisters *r)
1285		{
1286	<	current_cpu->execute_68k(pc, r);
1286	>	ppc_cpu->execute_68k(pc, r);
1287		}
1288
1289		/*
#	Line 1337 | Line 1306 | void Execute68kTrap(uint16 trap, M68kReg
1306
1307		uint32 call_macos(uint32 tvect)
1308		{
1309	<	return current_cpu->execute_macos_code(tvect, 0, NULL);
1309	>	return ppc_cpu->execute_macos_code(tvect, 0, NULL);
1310		}
1311
1312		uint32 call_macos1(uint32 tvect, uint32 arg1)
1313		{
1314		const uint32 args[] = { arg1 };
1315	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1315	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1316		}
1317
1318		uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2)
1319		{
1320		const uint32 args[] = { arg1, arg2 };
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_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3)
1325		{
1326		const uint32 args[] = { arg1, arg2, arg3 };
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_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4)
1331		{
1332		const uint32 args[] = { arg1, arg2, arg3, arg4 };
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_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5)
1337		{
1338		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5 };
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_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6)
1343		{
1344		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6 };
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_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7)
1349		{
1350		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 };
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		/*
#	Line 1388 | Line 1357 | uint32 call_macos7(uint32 tvect, uint32
1357
1358		void get_resource(void)
1359		{
1360	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1360	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1361		}
1362
1363		void get_1_resource(void)
1364		{
1365	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1365	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1366		}
1367
1368		void get_ind_resource(void)
1369		{
1370	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1370	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1371		}
1372
1373		void get_1_ind_resource(void)
1374		{
1375	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1375	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1376		}
1377
1378		void r_get_resource(void)
1379		{
1380	<	current_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1380	>	ppc_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1381		}

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