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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 1.43 by gbeauche, 2004-05-31T10:08:31Z

#	Line 84 | 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)
89	–
87		// Enable interrupt routine safety checks?
88		#define SAFE_INTERRUPT_PPC 1
89
#	Line 472 | Line 469 | int sheepshaver_cpu::compile1(codegen_co
469		break;
470		}
471		// Could we fully translate this NativeOp?
472	<	if (FN_field::test(opcode)) {
473	<	if (status != COMPILE_FAILURE) {
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;
481	–	break;
482	–	}
483	–	else if (status != COMPILE_FAILURE) {
484	–	cg_context.done_compile = false;
480		break;
481		}
482		#if PPC_REENTRANT_JIT
483		// Try to execute NativeOp trampoline
484	<	dg.gen_set_PC_im(cg_context.pc + 4);
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;
#	Line 494 | Line 494 | int sheepshaver_cpu::compile1(codegen_co
494		break;
495		#endif
496		// Invoke NativeOp handler
497	<	typedef void (*func_t)(dyngen_cpu_base, uint32);
498	<	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
499	<	dg.gen_invoke_CPU_im(func, selector);
500	<	cg_context.done_compile = false;
501	<	status = COMPILE_CODE_OK;
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
#	Line 603 | Line 607 | void sheepshaver_cpu::interrupt(uint32 e
607		depth++;
608		#endif
609
606	–	#if !MULTICORE_CPU
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);
612	–	#endif
615
616		// Initialize stack pointer to SheepShaver alternate stack base
617		gpr(1) = SignalStackBase() - 64;
#	Line 649 | Line 651 | void sheepshaver_cpu::interrupt(uint32 e
651		// Enter nanokernel
652		execute(entry);
653
652	–	#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;
658	–	#endif
659
660		#if EMUL_TIME_STATS
661		interrupt_time += (clock() - interrupt_start);
#	Line 857 | 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
862	<	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);
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
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 916 | 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?
905	<	bool mac_fault = (pc >= ROM_BASE) && (pc < (ROM_BASE + ROM_AREA_SIZE)) || (pc >= RAMBase) && (pc < (RAMBase + RAMSize));
905	>	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));
906		if (mac_fault) {
907
908		// "VM settings" during MacOS 8 installation
#	Line 940 | Line 922 | static sigsegv_return_t sigsegv_handler(
922		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
923		else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
924		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
925	+
926	+	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
927	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(16) == 0xf3012002 || cpu->gpr(16) == 0xf3012000))
928	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
929	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
930	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
931
932		// Ignore writes to the zero page
933		else if ((uint32)(addr - SheepMem::ZeroPage()) < (uint32)SheepMem::PageSize())
#	Line 956 | Line 944 | static sigsegv_return_t sigsegv_handler(
944		printf("SIGSEGV\n");
945		printf("  pc %p\n", fault_instruction);
946		printf("  ea %p\n", fault_address);
959	–	printf(" cpu %s\n", current_cpu == main_cpu ? "main" : "interrupts");
947		dump_registers();
948	<	current_cpu->dump_log();
948	>	ppc_cpu->dump_log();
949		enter_mon();
950		QuitEmulator();
951
#	Line 968 | Line 955 | static sigsegv_return_t sigsegv_handler(
955		void init_emul_ppc(void)
956		{
957		// Initialize main CPU emulator
958	<	main_cpu = new sheepshaver_cpu();
959	<	main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
960	<	main_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
958	>	ppc_cpu = new sheepshaver_cpu();
959	>	ppc_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
960	>	ppc_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
961		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
962
976	–	#if MULTICORE_CPU
977	–	// Initialize alternate CPU emulator to handle interrupts
978	–	interrupt_cpu = new sheepshaver_cpu();
979	–	#endif
980	–
963		// Install the handler for SIGSEGV
964		sigsegv_install_handler(sigsegv_handler);
965
#	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		{
#	Line 1100 | Line 1071 | void sheepshaver_cpu::handle_interrupt(v
1071		if (InterruptFlags == 0)
1072		return;
1073
1074	+	// Current interrupt nest level
1075	+	static int interrupt_depth = 0;
1076	+	++interrupt_depth;
1077	+
1078		// Disable MacOS stack sniffer
1079		WriteMacInt32(0x110, 0);
1080
#	Line 1107 | Line 1082 | void sheepshaver_cpu::handle_interrupt(v
1082		switch (ReadMacInt32(XLM_RUN_MODE)) {
1083		case MODE_68K:
1084		// 68k emulator active, trigger 68k interrupt level 1
1110	–	assert(current_cpu == main_cpu);
1085		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1086		set_cr(get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
1087		break;
#	Line 1115 | Line 1089 | void sheepshaver_cpu::handle_interrupt(v
1089		#if INTERRUPTS_IN_NATIVE_MODE
1090		case MODE_NATIVE:
1091		// 68k emulator inactive, in nanokernel?
1092	<	assert(current_cpu == main_cpu);
1119	<	if (gpr(1) != KernelDataAddr) {
1092	>	if (gpr(1) != KernelDataAddr && interrupt_depth == 1) {
1093		interrupt_context ctx(this, "PowerPC mode");
1094
1095		// Prepare for 68k interrupt level 1
#	Line 1127 | Line 1100 | void sheepshaver_cpu::handle_interrupt(v
1100
1101		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1102		DisableInterrupt();
1130	–	cpu_push(interrupt_cpu);
1103		if (ROMType == ROMTYPE_NEWWORLD)
1104	<	current_cpu->interrupt(ROM_BASE + 0x312b1c);
1104	>	ppc_cpu->interrupt(ROM_BASE + 0x312b1c);
1105		else
1106	<	current_cpu->interrupt(ROM_BASE + 0x312a3c);
1135	<	cpu_pop();
1106	>	ppc_cpu->interrupt(ROM_BASE + 0x312a3c);
1107		}
1108		break;
1109		#endif
#	Line 1171 | Line 1142 | void sheepshaver_cpu::handle_interrupt(v
1142		break;
1143		#endif
1144		}
1145	+
1146	+	// We are done with this interrupt
1147	+	--interrupt_depth;
1148		}
1149
1150		static void get_resource(void);
#	Line 1314 | Line 1288 | void sheepshaver_cpu::execute_native_op(
1288
1289		void Execute68k(uint32 pc, M68kRegisters *r)
1290		{
1291	<	current_cpu->execute_68k(pc, r);
1291	>	ppc_cpu->execute_68k(pc, r);
1292		}
1293
1294		/*
#	Line 1337 | Line 1311 | void Execute68kTrap(uint16 trap, M68kReg
1311
1312		uint32 call_macos(uint32 tvect)
1313		{
1314	<	return current_cpu->execute_macos_code(tvect, 0, NULL);
1314	>	return ppc_cpu->execute_macos_code(tvect, 0, NULL);
1315		}
1316
1317		uint32 call_macos1(uint32 tvect, uint32 arg1)
1318		{
1319		const uint32 args[] = { arg1 };
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_macos2(uint32 tvect, uint32 arg1, uint32 arg2)
1324		{
1325		const uint32 args[] = { arg1, arg2 };
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_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3)
1330		{
1331		const uint32 args[] = { arg1, arg2, arg3 };
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_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4)
1336		{
1337		const uint32 args[] = { arg1, arg2, arg3, arg4 };
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_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5)
1342		{
1343		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5 };
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_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6)
1348		{
1349		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6 };
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		uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7)
1354		{
1355		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 };
1356	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1356	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1357		}
1358
1359		/*
#	Line 1388 | Line 1362 | uint32 call_macos7(uint32 tvect, uint32
1362
1363		void get_resource(void)
1364		{
1365	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1365	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1366		}
1367
1368		void get_1_resource(void)
1369		{
1370	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1370	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1371		}
1372
1373		void get_ind_resource(void)
1374		{
1375	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1375	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1376		}
1377
1378		void get_1_ind_resource(void)
1379		{
1380	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1380	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1381		}
1382
1383		void r_get_resource(void)
1384		{
1385	<	current_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1385	>	ppc_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1386		}

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