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

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.56 by gbeauche, 2005-01-30T21:12:07Z vs.
Revision 1.68 by gbeauche, 2006-05-03T21:45:14Z

#	Line 1 | Line 1
1		/*
2		*  sheepshaver_glue.cpp - Glue Kheperix CPU to SheepShaver CPU engine interface
3		*
4	<	*  SheepShaver (C) 1997-2004 Christian Bauer and Marc Hellwig
4	>	*  SheepShaver (C) 1997-2005 Christian Bauer and Marc Hellwig
5		*
6		*  This program is free software; you can redistribute it and/or modify
7		*  it under the terms of the GNU General Public License as published by
#	Line 89 | Line 89 | extern uintptr SignalStackBase();
89
90		// From rsrc_patches.cpp
91		extern "C" void check_load_invoc(uint32 type, int16 id, uint32 h);
92	+	extern "C" void named_check_load_invoc(uint32 type, uint32 name, uint32 h);
93
94		// PowerPC EmulOp to exit from emulation looop
95		const uint32 POWERPC_EXEC_RETURN = POWERPC_EMUL_OP | 1;
96
96	–	// Enable interrupt routine safety checks?
97	–	#define SAFE_INTERRUPT_PPC 1
98	–
97		// Enable Execute68k() safety checks?
98		#define SAFE_EXEC_68K 1
99
#	Line 142 | Line 140 | class sheepshaver_cpu
140		void init_decoder();
141		void execute_sheep(uint32 opcode);
142
145	–	// CPU context to preserve on interrupt
146	–	class interrupt_context {
147	–	uint32 gpr[32];
148	–	double fpr[32];
149	–	uint32 pc;
150	–	uint32 lr;
151	–	uint32 ctr;
152	–	uint32 cr;
153	–	uint32 xer;
154	–	uint32 fpscr;
155	–	sheepshaver_cpu *cpu;
156	–	const char *where;
157	–	public:
158	–	interrupt_context(sheepshaver_cpu *_cpu, const char *_where);
159	–	~interrupt_context();
160	–	};
161	–
143		public:
144
145		// Constructor
#	Line 194 | Line 175 | public:
175
176		// Handle MacOS interrupt
177		void interrupt(uint32 entry);
197	–	void handle_interrupt();
178
179		// Make sure the SIGSEGV handler can access CPU registers
180		friend sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
201	–
202	–	// Memory allocator returning areas aligned on 16-byte boundaries
203	–	void *operator new(size_t size);
204	–	void operator delete(void *p);
181		};
182
207	–	// Memory allocator returning areas aligned on 16-byte boundaries
208	–	void *sheepshaver_cpu::operator new(size_t size)
209	–	{
210	–	void *p;
211	–
212	–	#if defined(HAVE_POSIX_MEMALIGN)
213	–	if (posix_memalign(&p, 16, size) != 0)
214	–	throw std::bad_alloc();
215	–	#elif defined(HAVE_MEMALIGN)
216	–	p = memalign(16, size);
217	–	#elif defined(HAVE_VALLOC)
218	–	p = valloc(size); // page-aligned!
219	–	#else
220	–	/* XXX: handle padding ourselves */
221	–	p = malloc(size);
222	–	#endif
223	–
224	–	return p;
225	–	}
226	–
227	–	void sheepshaver_cpu::operator delete(void *p)
228	–	{
229	–	#if defined(HAVE_MEMALIGN) || defined(HAVE_VALLOC)
230	–	#if defined(__GLIBC__)
231	–	// this is known to work only with GNU libc
232	–	free(p);
233	–	#endif
234	–	#else
235	–	free(p);
236	–	#endif
237	–	}
238	–
183		sheepshaver_cpu::sheepshaver_cpu()
184		: powerpc_cpu(enable_jit_p())
185		{
#	Line 284 | Line 228 | void sheepshaver_cpu::execute_emul_op(ui
228		for (int i = 0; i < 7; i++)
229		r68.a[i] = gpr(16 + i);
230		r68.a[7] = gpr(1);
231	<	uint32 saved_cr = get_cr() & CR_field<2>::mask();
231	>	uint32 saved_cr = get_cr() & 0xff9fffff; // mask_operand::compute(11, 8)
232		uint32 saved_xer = get_xer();
233		EmulOp(&r68, gpr(24), emul_op);
234		set_cr(saved_cr);
#	Line 400 | Line 344 | int sheepshaver_cpu::compile1(codegen_co
344		dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc);
345		status = COMPILE_CODE_OK;
346		break;
347	+	case NATIVE_NAMED_CHECK_LOAD_INVOC:
348	+	dg.gen_load_T0_GPR(3);
349	+	dg.gen_load_T1_GPR(4);
350	+	dg.gen_load_T2_GPR(5);
351	+	dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))named_check_load_invoc);
352	+	status = COMPILE_CODE_OK;
353	+	break;
354		#endif
355		case NATIVE_BITBLT:
356		dg.gen_load_T0_GPR(3);
#	Line 479 | Line 430 | int sheepshaver_cpu::compile1(codegen_co
430		}
431		#endif
432
482	–	// CPU context to preserve on interrupt
483	–	sheepshaver_cpu::interrupt_context::interrupt_context(sheepshaver_cpu *_cpu, const char *_where)
484	–	{
485	–	#if SAFE_INTERRUPT_PPC >= 2
486	–	cpu = _cpu;
487	–	where = _where;
488	–
489	–	// Save interrupt context
490	–	memcpy(&gpr[0], &cpu->gpr(0), sizeof(gpr));
491	–	memcpy(&fpr[0], &cpu->fpr(0), sizeof(fpr));
492	–	pc = cpu->pc();
493	–	lr = cpu->lr();
494	–	ctr = cpu->ctr();
495	–	cr = cpu->get_cr();
496	–	xer = cpu->get_xer();
497	–	fpscr = cpu->fpscr();
498	–	#endif
499	–	}
500	–
501	–	sheepshaver_cpu::interrupt_context::~interrupt_context()
502	–	{
503	–	#if SAFE_INTERRUPT_PPC >= 2
504	–	// Check whether CPU context was preserved by interrupt
505	–	if (memcmp(&gpr[0], &cpu->gpr(0), sizeof(gpr)) != 0) {
506	–	printf("FATAL: %s: interrupt clobbers registers\n", where);
507	–	for (int i = 0; i < 32; i++)
508	–	if (gpr[i] != cpu->gpr(i))
509	–	printf(" r%d: %08x -> %08x\n", i, gpr[i], cpu->gpr(i));
510	–	}
511	–	if (memcmp(&fpr[0], &cpu->fpr(0), sizeof(fpr)) != 0) {
512	–	printf("FATAL: %s: interrupt clobbers registers\n", where);
513	–	for (int i = 0; i < 32; i++)
514	–	if (fpr[i] != cpu->fpr(i))
515	–	printf(" r%d: %f -> %f\n", i, fpr[i], cpu->fpr(i));
516	–	}
517	–	if (pc != cpu->pc())
518	–	printf("FATAL: %s: interrupt clobbers PC\n", where);
519	–	if (lr != cpu->lr())
520	–	printf("FATAL: %s: interrupt clobbers LR\n", where);
521	–	if (ctr != cpu->ctr())
522	–	printf("FATAL: %s: interrupt clobbers CTR\n", where);
523	–	if (cr != cpu->get_cr())
524	–	printf("FATAL: %s: interrupt clobbers CR\n", where);
525	–	if (xer != cpu->get_xer())
526	–	printf("FATAL: %s: interrupt clobbers XER\n", where);
527	–	if (fpscr != cpu->fpscr())
528	–	printf("FATAL: %s: interrupt clobbers FPSCR\n", where);
529	–	#endif
530	–	}
531	–
433		// Handle MacOS interrupt
434		void sheepshaver_cpu::interrupt(uint32 entry)
435		{
#	Line 537 | Line 438 | void sheepshaver_cpu::interrupt(uint32 e
438		const clock_t interrupt_start = clock();
439		#endif
440
540	–	#if SAFE_INTERRUPT_PPC
541	–	static int depth = 0;
542	–	if (depth != 0)
543	–	printf("FATAL: sheepshaver_cpu::interrupt() called more than once: %d\n", depth);
544	–	depth++;
545	–	#endif
546	–
441		// Save program counters and branch registers
442		uint32 saved_pc = pc();
443		uint32 saved_lr = lr();
#	Line 597 | Line 491 | void sheepshaver_cpu::interrupt(uint32 e
491		#if EMUL_TIME_STATS
492		interrupt_time += (clock() - interrupt_start);
493		#endif
600	–
601	–	#if SAFE_INTERRUPT_PPC
602	–	depth--;
603	–	#endif
494		}
495
496		// Execute 68k routine
#	Line 878 | Line 768 | sigsegv_return_t sigsegv_handler(sigsegv
768		#error "FIXME: You don't have the capability to skip instruction within signal handlers"
769		#endif
770
771	<	printf("SIGSEGV\n");
772	<	printf("  pc %p\n", fault_instruction);
773	<	printf("  ea %p\n", fault_address);
771	>	fprintf(stderr, "SIGSEGV\n");
772	>	fprintf(stderr, "  pc %p\n", fault_instruction);
773	>	fprintf(stderr, "  ea %p\n", fault_address);
774		dump_registers();
775		ppc_cpu->dump_log();
776		enter_mon();
#	Line 944 | Line 834 | void exit_emul_ppc(void)
834		#endif
835
836		delete ppc_cpu;
837	+	ppc_cpu = NULL;
838		}
839
840		#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
#	Line 991 | Line 882 | void emul_ppc(uint32 entry)
882
883		void TriggerInterrupt(void)
884		{
885	+	idle_resume();
886		#if 0
887		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
888		#else
#	Line 1000 | Line 892 | void TriggerInterrupt(void)
892		#endif
893		}
894
895	<	void sheepshaver_cpu::handle_interrupt(void)
895	>	void HandleInterrupt(powerpc_registers *r)
896		{
897		#ifdef USE_SDL_VIDEO
898		// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
#	Line 1011 | Line 903 | void sheepshaver_cpu::handle_interrupt(v
903		if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
904		return;
905
906	<	// Current interrupt nest level
1015	<	static int interrupt_depth = 0;
1016	<	++interrupt_depth;
906	>	// Update interrupt count
907		#if EMUL_TIME_STATS
908		interrupt_count++;
909		#endif
910
1021	–	// Disable MacOS stack sniffer
1022	–	WriteMacInt32(0x110, 0);
1023	–
911		// Interrupt action depends on current run mode
912		switch (ReadMacInt32(XLM_RUN_MODE)) {
913		case MODE_68K:
914		// 68k emulator active, trigger 68k interrupt level 1
915		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
916	<	set_cr(get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
916	>	r->cr.set(r->cr.get() | tswap32(kernel_data->v[0x674 >> 2]));
917		break;
918
919		#if INTERRUPTS_IN_NATIVE_MODE
920		case MODE_NATIVE:
921		// 68k emulator inactive, in nanokernel?
922	<	if (gpr(1) != KernelDataAddr && interrupt_depth == 1) {
1036	<	interrupt_context ctx(this, "PowerPC mode");
922	>	if (r->gpr[1] != KernelDataAddr) {
923
924		// Prepare for 68k interrupt level 1
925		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
#	Line 1055 | Line 941 | void sheepshaver_cpu::handle_interrupt(v
941		case MODE_EMUL_OP:
942		// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
943		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1058	–	interrupt_context ctx(this, "68k mode");
944		#if EMUL_TIME_STATS
945		const clock_t interrupt_start = clock();
946		#endif
#	Line 1092 | Line 977 | void sheepshaver_cpu::handle_interrupt(v
977		break;
978		#endif
979		}
1095	–
1096	–	// We are done with this interrupt
1097	–	--interrupt_depth;
980		}
981
1100	–	static void get_resource(void);
1101	–	static void get_1_resource(void);
1102	–	static void get_ind_resource(void);
1103	–	static void get_1_ind_resource(void);
1104	–	static void r_get_resource(void);
1105	–
982		// Execute NATIVE_OP routine
983		void sheepshaver_cpu::execute_native_op(uint32 selector)
984		{
#	Line 1124 | Line 1000 | void sheepshaver_cpu::execute_native_op(
1000		case NATIVE_VIDEO_DO_DRIVER_IO:
1001		gpr(3) = (int32)(int16)VideoDoDriverIO(gpr(3), gpr(4), gpr(5), gpr(6), gpr(7));
1002		break;
1003	+	case NATIVE_ETHER_AO_GET_HWADDR:
1004	+	AO_get_ethernet_address(gpr(3));
1005	+	break;
1006	+	case NATIVE_ETHER_AO_ADD_MULTI:
1007	+	AO_enable_multicast(gpr(3));
1008	+	break;
1009	+	case NATIVE_ETHER_AO_DEL_MULTI:
1010	+	AO_disable_multicast(gpr(3));
1011	+	break;
1012	+	case NATIVE_ETHER_AO_SEND_PACKET:
1013	+	AO_transmit_packet(gpr(3));
1014	+	break;
1015		case NATIVE_ETHER_IRQ:
1016		EtherIRQ();
1017		break;
#	Line 1184 | Line 1072 | void sheepshaver_cpu::execute_native_op(
1072		break;
1073		}
1074		case NATIVE_GET_RESOURCE:
1075	+	get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1076	+	break;
1077		case NATIVE_GET_1_RESOURCE:
1078	+	get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1079	+	break;
1080		case NATIVE_GET_IND_RESOURCE:
1081	+	get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1082	+	break;
1083		case NATIVE_GET_1_IND_RESOURCE:
1084	<	case NATIVE_R_GET_RESOURCE: {
1085	<	typedef void (*GetResourceCallback)(void);
1086	<	static const GetResourceCallback get_resource_callbacks[] = {
1087	<	::get_resource,
1194	<	::get_1_resource,
1195	<	::get_ind_resource,
1196	<	::get_1_ind_resource,
1197	<	::r_get_resource
1198	<	};
1199	<	get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1084	>	get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1085	>	break;
1086	>	case NATIVE_R_GET_RESOURCE:
1087	>	get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1088		break;
1201	–	}
1089		case NATIVE_MAKE_EXECUTABLE:
1090		MakeExecutable(0, gpr(4), gpr(5));
1091		break;
1092		case NATIVE_CHECK_LOAD_INVOC:
1093		check_load_invoc(gpr(3), gpr(4), gpr(5));
1094		break;
1095	+	case NATIVE_NAMED_CHECK_LOAD_INVOC:
1096	+	named_check_load_invoc(gpr(3), gpr(4), gpr(5));
1097	+	break;
1098		default:
1099		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
1100		QuitEmulator();
#	Line 1291 | Line 1181 | uint32 call_macos7(uint32 tvect, uint32
1181		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 };
1182		return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1183		}
1294	–
1295	–	/*
1296	–	*  Resource Manager thunks
1297	–	*/
1298	–
1299	–	void get_resource(void)
1300	–	{
1301	–	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1302	–	}
1303	–
1304	–	void get_1_resource(void)
1305	–	{
1306	–	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1307	–	}
1308	–
1309	–	void get_ind_resource(void)
1310	–	{
1311	–	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1312	–	}
1313	–
1314	–	void get_1_ind_resource(void)
1315	–	{
1316	–	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1317	–	}
1318	–
1319	–	void r_get_resource(void)
1320	–	{
1321	–	ppc_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1322	–	}

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