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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 1.45 by gbeauche, 2004-06-22T14:18:35Z

#	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 472 | Line 471 | int sheepshaver_cpu::compile1(codegen_co
471		break;
472		}
473		// Could we fully translate this NativeOp?
474	<	if (FN_field::test(opcode)) {
475	<	if (status != COMPILE_FAILURE) {
474	>	if (status == COMPILE_CODE_OK) {
475	>	if (!FN_field::test(opcode))
476	>	cg_context.done_compile = false;
477	>	else {
478		dg.gen_load_A0_LR();
479		dg.gen_set_PC_A0();
480	+	cg_context.done_compile = true;
481		}
480	–	cg_context.done_compile = true;
481	–	break;
482	–	}
483	–	else if (status != COMPILE_FAILURE) {
484	–	cg_context.done_compile = false;
482		break;
483		}
484		#if PPC_REENTRANT_JIT
485		// Try to execute NativeOp trampoline
486	<	dg.gen_set_PC_im(cg_context.pc + 4);
486	>	if (!FN_field::test(opcode))
487	>	dg.gen_set_PC_im(cg_context.pc + 4);
488	>	else {
489	>	dg.gen_load_A0_LR();
490	>	dg.gen_set_PC_A0();
491	>	}
492		dg.gen_mov_32_T0_im(selector);
493		dg.gen_jmp(native_op_trampoline);
494		cg_context.done_compile = true;
#	Line 494 | Line 496 | int sheepshaver_cpu::compile1(codegen_co
496		break;
497		#endif
498		// Invoke NativeOp handler
499	<	typedef void (*func_t)(dyngen_cpu_base, uint32);
500	<	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
501	<	dg.gen_invoke_CPU_im(func, selector);
502	<	cg_context.done_compile = false;
503	<	status = COMPILE_CODE_OK;
499	>	if (!FN_field::test(opcode)) {
500	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
501	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
502	>	dg.gen_invoke_CPU_im(func, selector);
503	>	cg_context.done_compile = false;
504	>	status = COMPILE_CODE_OK;
505	>	}
506	>	// Otherwise, let it generate a call to execute_sheep() which
507	>	// will cause necessary updates to the program counter
508		break;
509		}
510
#	Line 592 | Line 598 | sheepshaver_cpu::interrupt_context::~int
598		void sheepshaver_cpu::interrupt(uint32 entry)
599		{
600		#if EMUL_TIME_STATS
601	<	interrupt_count++;
601	>	ppc_interrupt_count++;
602		const clock_t interrupt_start = clock();
603		#endif
604
#	Line 603 | Line 609 | void sheepshaver_cpu::interrupt(uint32 e
609		depth++;
610		#endif
611
606	–	#if !MULTICORE_CPU
612		// Save program counters and branch registers
613		uint32 saved_pc = pc();
614		uint32 saved_lr = lr();
615		uint32 saved_ctr= ctr();
616		uint32 saved_sp = gpr(1);
612	–	#endif
617
618		// Initialize stack pointer to SheepShaver alternate stack base
619		gpr(1) = SignalStackBase() - 64;
#	Line 649 | Line 653 | void sheepshaver_cpu::interrupt(uint32 e
653		// Enter nanokernel
654		execute(entry);
655
652	–	#if !MULTICORE_CPU
656		// Restore program counters and branch registers
657		pc() = saved_pc;
658		lr() = saved_lr;
659		ctr()= saved_ctr;
660		gpr(1) = saved_sp;
658	–	#endif
661
662		#if EMUL_TIME_STATS
663		interrupt_time += (clock() - interrupt_start);
#	Line 857 | Line 859 | inline void sheepshaver_cpu::get_resourc
859		*              SheepShaver CPU engine interface
860		**/
861
862	<	static sheepshaver_cpu *main_cpu = NULL;                // CPU emulator to handle usual control flow
863	<	static sheepshaver_cpu *interrupt_cpu = NULL;   // CPU emulator to handle interrupts
862	<	static sheepshaver_cpu *current_cpu = NULL;             // Current CPU emulator context
862	>	// PowerPC CPU emulator
863	>	static sheepshaver_cpu *ppc_cpu = NULL;
864
865		void FlushCodeCache(uintptr start, uintptr end)
866		{
867		D(bug("FlushCodeCache(%08x, %08x)\n", start, end));
868	<	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
868	>	ppc_cpu->invalidate_cache_range(start, end);
869		}
870
871		// Dump PPC registers
872		static void dump_registers(void)
873		{
874	<	current_cpu->dump_registers();
874	>	ppc_cpu->dump_registers();
875		}
876
877		// Dump log
878		static void dump_log(void)
879		{
880	<	current_cpu->dump_log();
880	>	ppc_cpu->dump_log();
881		}
882
883		/*
#	Line 916 | Line 900 | static sigsegv_return_t sigsegv_handler(
900		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
901
902		// Get program counter of target CPU
903	<	sheepshaver_cpu * const cpu = current_cpu;
903	>	sheepshaver_cpu * const cpu = ppc_cpu;
904		const uint32 pc = cpu->pc();
905
906		// Fault in Mac ROM or RAM?
907	<	bool mac_fault = (pc >= ROM_BASE) && (pc < (ROM_BASE + ROM_AREA_SIZE)) || (pc >= RAMBase) && (pc < (RAMBase + RAMSize));
907	>	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));
908		if (mac_fault) {
909
910		// "VM settings" during MacOS 8 installation
#	Line 940 | Line 924 | static sigsegv_return_t sigsegv_handler(
924		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
925		else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
926		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
927	+
928	+	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
929	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(16) == 0xf3012002 || cpu->gpr(16) == 0xf3012000))
930	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
931	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
932	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
933
934		// Ignore writes to the zero page
935		else if ((uint32)(addr - SheepMem::ZeroPage()) < (uint32)SheepMem::PageSize())
#	Line 956 | Line 946 | static sigsegv_return_t sigsegv_handler(
946		printf("SIGSEGV\n");
947		printf("  pc %p\n", fault_instruction);
948		printf("  ea %p\n", fault_address);
959	–	printf(" cpu %s\n", current_cpu == main_cpu ? "main" : "interrupts");
949		dump_registers();
950	<	current_cpu->dump_log();
950	>	ppc_cpu->dump_log();
951		enter_mon();
952		QuitEmulator();
953
#	Line 968 | Line 957 | static sigsegv_return_t sigsegv_handler(
957		void init_emul_ppc(void)
958		{
959		// Initialize main CPU emulator
960	<	main_cpu = new sheepshaver_cpu();
961	<	main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
962	<	main_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
960	>	ppc_cpu = new sheepshaver_cpu();
961	>	ppc_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
962	>	ppc_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
963		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
964
976	–	#if MULTICORE_CPU
977	–	// Initialize alternate CPU emulator to handle interrupts
978	–	interrupt_cpu = new sheepshaver_cpu();
979	–	#endif
980	–
965		// Install the handler for SIGSEGV
966		sigsegv_install_handler(sigsegv_handler);
967
#	Line 1006 | Line 990 | void exit_emul_ppc(void)
990		printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
991		printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
992		(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
993	+	printf("Total ppc interrupt count: %d (%2.1f %%)\n", ppc_interrupt_count,
994	+	(double(ppc_interrupt_count) * 100.0) / double(interrupt_count));
995
996		#define PRINT_STATS(LABEL, VAR_PREFIX) do {                                                             \
997		printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count);             \
#	Line 1022 | Line 1008 | void exit_emul_ppc(void)
1008		printf("\n");
1009		#endif
1010
1011	<	delete main_cpu;
1026	<	#if MULTICORE_CPU
1027	<	delete interrupt_cpu;
1028	<	#endif
1011	>	delete ppc_cpu;
1012		}
1013
1014		#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
#	Line 1060 | Line 1043 | void init_emul_op_trampolines(basic_dyng
1043
1044		void emul_ppc(uint32 entry)
1045		{
1063	–	current_cpu = main_cpu;
1046		#if 0
1047	<	current_cpu->start_log();
1047	>	ppc_cpu->start_log();
1048		#endif
1049		// start emulation loop and enable code translation or caching
1050	<	current_cpu->execute(entry);
1050	>	ppc_cpu->execute(entry);
1051		}
1052
1053		/*
1054		*  Handle PowerPC interrupt
1055		*/
1056
1075	–	#if ASYNC_IRQ
1076	–	void HandleInterrupt(void)
1077	–	{
1078	–	main_cpu->handle_interrupt();
1079	–	}
1080	–	#else
1057		void TriggerInterrupt(void)
1058		{
1059		#if 0
1060		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1061		#else
1062		// Trigger interrupt to main cpu only
1063	<	if (main_cpu)
1064	<	main_cpu->trigger_interrupt();
1063	>	if (ppc_cpu)
1064	>	ppc_cpu->trigger_interrupt();
1065		#endif
1066		}
1091	–	#endif
1067
1068		void sheepshaver_cpu::handle_interrupt(void)
1069		{
#	Line 1096 | Line 1071 | void sheepshaver_cpu::handle_interrupt(v
1071		if (*(int32 *)XLM_IRQ_NEST > 0)
1072		return;
1073
1074	<	// Do nothing if there is no interrupt pending
1075	<	if (InterruptFlags == 0)
1076	<	return;
1074	>	// Current interrupt nest level
1075	>	static int interrupt_depth = 0;
1076	>	++interrupt_depth;
1077	>	#if EMUL_TIME_STATS
1078	>	interrupt_count++;
1079	>	#endif
1080
1081		// Disable MacOS stack sniffer
1082		WriteMacInt32(0x110, 0);
#	Line 1107 | Line 1085 | void sheepshaver_cpu::handle_interrupt(v
1085		switch (ReadMacInt32(XLM_RUN_MODE)) {
1086		case MODE_68K:
1087		// 68k emulator active, trigger 68k interrupt level 1
1110	–	assert(current_cpu == main_cpu);
1088		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1089		set_cr(get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
1090		break;
#	Line 1115 | Line 1092 | void sheepshaver_cpu::handle_interrupt(v
1092		#if INTERRUPTS_IN_NATIVE_MODE
1093		case MODE_NATIVE:
1094		// 68k emulator inactive, in nanokernel?
1095	<	assert(current_cpu == main_cpu);
1119	<	if (gpr(1) != KernelDataAddr) {
1095	>	if (gpr(1) != KernelDataAddr && interrupt_depth == 1) {
1096		interrupt_context ctx(this, "PowerPC mode");
1097
1098		// Prepare for 68k interrupt level 1
#	Line 1127 | Line 1103 | void sheepshaver_cpu::handle_interrupt(v
1103
1104		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1105		DisableInterrupt();
1130	–	cpu_push(interrupt_cpu);
1106		if (ROMType == ROMTYPE_NEWWORLD)
1107	<	current_cpu->interrupt(ROM_BASE + 0x312b1c);
1107	>	ppc_cpu->interrupt(ROM_BASE + 0x312b1c);
1108		else
1109	<	current_cpu->interrupt(ROM_BASE + 0x312a3c);
1135	<	cpu_pop();
1109	>	ppc_cpu->interrupt(ROM_BASE + 0x312a3c);
1110		}
1111		break;
1112		#endif
#	Line 1142 | Line 1116 | void sheepshaver_cpu::handle_interrupt(v
1116		// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
1117		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1118		interrupt_context ctx(this, "68k mode");
1119	+	#if EMUL_TIME_STATS
1120	+	const clock_t interrupt_start = clock();
1121	+	#endif
1122		#if 1
1123		// Execute full 68k interrupt routine
1124		M68kRegisters r;
#	Line 1167 | Line 1144 | void sheepshaver_cpu::handle_interrupt(v
1144		}
1145		}
1146		#endif
1147	+	#if EMUL_TIME_STATS
1148	+	interrupt_time += (clock() - interrupt_start);
1149	+	#endif
1150		}
1151		break;
1152		#endif
1153		}
1154	+
1155	+	// We are done with this interrupt
1156	+	--interrupt_depth;
1157		}
1158
1159		static void get_resource(void);
#	Line 1314 | Line 1297 | void sheepshaver_cpu::execute_native_op(
1297
1298		void Execute68k(uint32 pc, M68kRegisters *r)
1299		{
1300	<	current_cpu->execute_68k(pc, r);
1300	>	ppc_cpu->execute_68k(pc, r);
1301		}
1302
1303		/*
#	Line 1337 | Line 1320 | void Execute68kTrap(uint16 trap, M68kReg
1320
1321		uint32 call_macos(uint32 tvect)
1322		{
1323	<	return current_cpu->execute_macos_code(tvect, 0, NULL);
1323	>	return ppc_cpu->execute_macos_code(tvect, 0, NULL);
1324		}
1325
1326		uint32 call_macos1(uint32 tvect, uint32 arg1)
1327		{
1328		const uint32 args[] = { arg1 };
1329	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1329	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1330		}
1331
1332		uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2)
1333		{
1334		const uint32 args[] = { arg1, arg2 };
1335	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1335	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1336		}
1337
1338		uint32 call_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3)
1339		{
1340		const uint32 args[] = { arg1, arg2, arg3 };
1341	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1341	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1342		}
1343
1344		uint32 call_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4)
1345		{
1346		const uint32 args[] = { arg1, arg2, arg3, arg4 };
1347	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1347	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1348		}
1349
1350		uint32 call_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5)
1351		{
1352		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5 };
1353	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1353	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1354		}
1355
1356		uint32 call_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6)
1357		{
1358		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6 };
1359	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1359	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1360		}
1361
1362		uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7)
1363		{
1364		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 };
1365	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1365	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1366		}
1367
1368		/*
#	Line 1388 | Line 1371 | uint32 call_macos7(uint32 tvect, uint32
1371
1372		void get_resource(void)
1373		{
1374	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1374	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1375		}
1376
1377		void get_1_resource(void)
1378		{
1379	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1379	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1380		}
1381
1382		void get_ind_resource(void)
1383		{
1384	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1384	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1385		}
1386
1387		void get_1_ind_resource(void)
1388		{
1389	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1389	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1390		}
1391
1392		void r_get_resource(void)
1393		{
1394	<	current_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1394	>	ppc_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1395		}

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