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

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.54 by gbeauche, 2004-11-25T00:21:09Z vs.
Revision 1.71 by gbeauche, 2006-07-09T12:15:48Z

#	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	–	uint32 pc;
149	–	uint32 lr;
150	–	uint32 ctr;
151	–	uint32 cr;
152	–	uint32 xer;
153	–	sheepshaver_cpu *cpu;
154	–	const char *where;
155	–	public:
156	–	interrupt_context(sheepshaver_cpu *_cpu, const char *_where);
157	–	~interrupt_context();
158	–	};
159	–
143		public:
144
145		// Constructor
#	Line 192 | Line 175 | public:
175
176		// Handle MacOS interrupt
177		void interrupt(uint32 entry);
195	–	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);
199	–
200	–	// Memory allocator returning areas aligned on 16-byte boundaries
201	–	void *operator new(size_t size);
202	–	void operator delete(void *p);
181		};
182
205	–	// Memory allocator returning areas aligned on 16-byte boundaries
206	–	void *sheepshaver_cpu::operator new(size_t size)
207	–	{
208	–	void *p;
209	–
210	–	#if defined(HAVE_POSIX_MEMALIGN)
211	–	if (posix_memalign(&p, 16, size) != 0)
212	–	throw std::bad_alloc();
213	–	#elif defined(HAVE_MEMALIGN)
214	–	p = memalign(16, size);
215	–	#elif defined(HAVE_VALLOC)
216	–	p = valloc(size); // page-aligned!
217	–	#else
218	–	/* XXX: handle padding ourselves */
219	–	p = malloc(size);
220	–	#endif
221	–
222	–	return p;
223	–	}
224	–
225	–	void sheepshaver_cpu::operator delete(void *p)
226	–	{
227	–	#if defined(HAVE_MEMALIGN) || defined(HAVE_VALLOC)
228	–	#if defined(__GLIBC__)
229	–	// this is known to work only with GNU libc
230	–	free(p);
231	–	#endif
232	–	#else
233	–	free(p);
234	–	#endif
235	–	}
236	–
183		sheepshaver_cpu::sheepshaver_cpu()
184		: powerpc_cpu(enable_jit_p())
185		{
#	Line 282 | 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 390 | Line 336 | int sheepshaver_cpu::compile1(codegen_co
336		status = COMPILE_CODE_OK;
337		break;
338		}
339	+	#endif
340		case NATIVE_CHECK_LOAD_INVOC:
341		dg.gen_load_T0_GPR(3);
342		dg.gen_load_T1_GPR(4);
#	Line 398 | Line 345 | int sheepshaver_cpu::compile1(codegen_co
345		dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc);
346		status = COMPILE_CODE_OK;
347		break;
348	<	#endif
349	<	case NATIVE_BITBLT:
348	>	case NATIVE_NAMED_CHECK_LOAD_INVOC:
349	>	dg.gen_load_T0_GPR(3);
350	>	dg.gen_load_T1_GPR(4);
351	>	dg.gen_load_T2_GPR(5);
352	>	dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))named_check_load_invoc);
353	>	status = COMPILE_CODE_OK;
354	>	break;
355	>	case NATIVE_NQD_SYNC_HOOK:
356	>	dg.gen_load_T0_GPR(3);
357	>	dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_sync_hook);
358	>	dg.gen_store_T0_GPR(3);
359	>	status = COMPILE_CODE_OK;
360	>	break;
361	>	case NATIVE_NQD_BITBLT_HOOK:
362	>	dg.gen_load_T0_GPR(3);
363	>	dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_bitblt_hook);
364	>	dg.gen_store_T0_GPR(3);
365	>	status = COMPILE_CODE_OK;
366	>	break;
367	>	case NATIVE_NQD_FILLRECT_HOOK:
368	>	dg.gen_load_T0_GPR(3);
369	>	dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_fillrect_hook);
370	>	dg.gen_store_T0_GPR(3);
371	>	status = COMPILE_CODE_OK;
372	>	break;
373	>	case NATIVE_NQD_UNKNOWN_HOOK:
374	>	dg.gen_load_T0_GPR(3);
375	>	dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_unknown_hook);
376	>	dg.gen_store_T0_GPR(3);
377	>	status = COMPILE_CODE_OK;
378	>	break;
379	>	case NATIVE_NQD_BITBLT:
380		dg.gen_load_T0_GPR(3);
381		dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt);
382		status = COMPILE_CODE_OK;
383		break;
384	<	case NATIVE_INVRECT:
384	>	case NATIVE_NQD_INVRECT:
385		dg.gen_load_T0_GPR(3);
386		dg.gen_invoke_T0((void (*)(uint32))NQD_invrect);
387		status = COMPILE_CODE_OK;
388		break;
389	<	case NATIVE_FILLRECT:
389	>	case NATIVE_NQD_FILLRECT:
390		dg.gen_load_T0_GPR(3);
391		dg.gen_invoke_T0((void (*)(uint32))NQD_fillrect);
392		status = COMPILE_CODE_OK;
#	Line 420 | Line 397 | int sheepshaver_cpu::compile1(codegen_co
397		if (!FN_field::test(opcode))
398		cg_context.done_compile = false;
399		else {
400	<	dg.gen_load_A0_LR();
401	<	dg.gen_set_PC_A0();
400	>	dg.gen_load_T0_LR_aligned();
401	>	dg.gen_set_PC_T0();
402		cg_context.done_compile = true;
403		}
404		break;
#	Line 431 | Line 408 | int sheepshaver_cpu::compile1(codegen_co
408		if (!FN_field::test(opcode))
409		dg.gen_set_PC_im(cg_context.pc + 4);
410		else {
411	<	dg.gen_load_A0_LR();
412	<	dg.gen_set_PC_A0();
411	>	dg.gen_load_T0_LR_aligned();
412	>	dg.gen_set_PC_T0();
413		}
414		dg.gen_mov_32_T0_im(selector);
415		dg.gen_jmp(native_op_trampoline);
#	Line 477 | Line 454 | int sheepshaver_cpu::compile1(codegen_co
454		}
455		#endif
456
480	–	// CPU context to preserve on interrupt
481	–	sheepshaver_cpu::interrupt_context::interrupt_context(sheepshaver_cpu *_cpu, const char *_where)
482	–	{
483	–	#if SAFE_INTERRUPT_PPC >= 2
484	–	cpu = _cpu;
485	–	where = _where;
486	–
487	–	// Save interrupt context
488	–	memcpy(&gpr[0], &cpu->gpr(0), sizeof(gpr));
489	–	pc = cpu->pc();
490	–	lr = cpu->lr();
491	–	ctr = cpu->ctr();
492	–	cr = cpu->get_cr();
493	–	xer = cpu->get_xer();
494	–	#endif
495	–	}
496	–
497	–	sheepshaver_cpu::interrupt_context::~interrupt_context()
498	–	{
499	–	#if SAFE_INTERRUPT_PPC >= 2
500	–	// Check whether CPU context was preserved by interrupt
501	–	if (memcmp(&gpr[0], &cpu->gpr(0), sizeof(gpr)) != 0) {
502	–	printf("FATAL: %s: interrupt clobbers registers\n", where);
503	–	for (int i = 0; i < 32; i++)
504	–	if (gpr[i] != cpu->gpr(i))
505	–	printf(" r%d: %08x -> %08x\n", i, gpr[i], cpu->gpr(i));
506	–	}
507	–	if (pc != cpu->pc())
508	–	printf("FATAL: %s: interrupt clobbers PC\n", where);
509	–	if (lr != cpu->lr())
510	–	printf("FATAL: %s: interrupt clobbers LR\n", where);
511	–	if (ctr != cpu->ctr())
512	–	printf("FATAL: %s: interrupt clobbers CTR\n", where);
513	–	if (cr != cpu->get_cr())
514	–	printf("FATAL: %s: interrupt clobbers CR\n", where);
515	–	if (xer != cpu->get_xer())
516	–	printf("FATAL: %s: interrupt clobbers XER\n", where);
517	–	#endif
518	–	}
519	–
457		// Handle MacOS interrupt
458		void sheepshaver_cpu::interrupt(uint32 entry)
459		{
#	Line 525 | Line 462 | void sheepshaver_cpu::interrupt(uint32 e
462		const clock_t interrupt_start = clock();
463		#endif
464
528	–	#if SAFE_INTERRUPT_PPC
529	–	static int depth = 0;
530	–	if (depth != 0)
531	–	printf("FATAL: sheepshaver_cpu::interrupt() called more than once: %d\n", depth);
532	–	depth++;
533	–	#endif
534	–
465		// Save program counters and branch registers
466		uint32 saved_pc = pc();
467		uint32 saved_lr = lr();
#	Line 585 | Line 515 | void sheepshaver_cpu::interrupt(uint32 e
515		#if EMUL_TIME_STATS
516		interrupt_time += (clock() - interrupt_start);
517		#endif
588	–
589	–	#if SAFE_INTERRUPT_PPC
590	–	depth--;
591	–	#endif
518		}
519
520		// Execute 68k routine
#	Line 866 | Line 792 | sigsegv_return_t sigsegv_handler(sigsegv
792		#error "FIXME: You don't have the capability to skip instruction within signal handlers"
793		#endif
794
795	<	printf("SIGSEGV\n");
796	<	printf("  pc %p\n", fault_instruction);
797	<	printf("  ea %p\n", fault_address);
795	>	fprintf(stderr, "SIGSEGV\n");
796	>	fprintf(stderr, "  pc %p\n", fault_instruction);
797	>	fprintf(stderr, "  ea %p\n", fault_address);
798		dump_registers();
799		ppc_cpu->dump_log();
800		enter_mon();
#	Line 932 | Line 858 | void exit_emul_ppc(void)
858		#endif
859
860		delete ppc_cpu;
861	+	ppc_cpu = NULL;
862		}
863
864		#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
#	Line 979 | Line 906 | void emul_ppc(uint32 entry)
906
907		void TriggerInterrupt(void)
908		{
909	+	idle_resume();
910		#if 0
911		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
912		#else
#	Line 988 | Line 916 | void TriggerInterrupt(void)
916		#endif
917		}
918
919	<	void sheepshaver_cpu::handle_interrupt(void)
919	>	void HandleInterrupt(powerpc_registers *r)
920		{
921		#ifdef USE_SDL_VIDEO
922		// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
#	Line 999 | Line 927 | void sheepshaver_cpu::handle_interrupt(v
927		if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
928		return;
929
930	<	// Current interrupt nest level
1003	<	static int interrupt_depth = 0;
1004	<	++interrupt_depth;
930	>	// Update interrupt count
931		#if EMUL_TIME_STATS
932		interrupt_count++;
933		#endif
934
1009	–	// Disable MacOS stack sniffer
1010	–	WriteMacInt32(0x110, 0);
1011	–
935		// Interrupt action depends on current run mode
936		switch (ReadMacInt32(XLM_RUN_MODE)) {
937		case MODE_68K:
938		// 68k emulator active, trigger 68k interrupt level 1
939		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
940	<	set_cr(get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
940	>	r->cr.set(r->cr.get() | tswap32(kernel_data->v[0x674 >> 2]));
941		break;
942
943		#if INTERRUPTS_IN_NATIVE_MODE
944		case MODE_NATIVE:
945		// 68k emulator inactive, in nanokernel?
946	<	if (gpr(1) != KernelDataAddr && interrupt_depth == 1) {
1024	<	interrupt_context ctx(this, "PowerPC mode");
946	>	if (r->gpr[1] != KernelDataAddr) {
947
948		// Prepare for 68k interrupt level 1
949		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
#	Line 1043 | Line 965 | void sheepshaver_cpu::handle_interrupt(v
965		case MODE_EMUL_OP:
966		// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
967		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1046	–	interrupt_context ctx(this, "68k mode");
968		#if EMUL_TIME_STATS
969		const clock_t interrupt_start = clock();
970		#endif
#	Line 1080 | Line 1001 | void sheepshaver_cpu::handle_interrupt(v
1001		break;
1002		#endif
1003		}
1083	–
1084	–	// We are done with this interrupt
1085	–	--interrupt_depth;
1004		}
1005
1088	–	static void get_resource(void);
1089	–	static void get_1_resource(void);
1090	–	static void get_ind_resource(void);
1091	–	static void get_1_ind_resource(void);
1092	–	static void r_get_resource(void);
1093	–
1006		// Execute NATIVE_OP routine
1007		void sheepshaver_cpu::execute_native_op(uint32 selector)
1008		{
#	Line 1112 | Line 1024 | void sheepshaver_cpu::execute_native_op(
1024		case NATIVE_VIDEO_DO_DRIVER_IO:
1025		gpr(3) = (int32)(int16)VideoDoDriverIO(gpr(3), gpr(4), gpr(5), gpr(6), gpr(7));
1026		break;
1027	<	#ifdef WORDS_BIGENDIAN
1027	>	case NATIVE_ETHER_AO_GET_HWADDR:
1028	>	AO_get_ethernet_address(gpr(3));
1029	>	break;
1030	>	case NATIVE_ETHER_AO_ADD_MULTI:
1031	>	AO_enable_multicast(gpr(3));
1032	>	break;
1033	>	case NATIVE_ETHER_AO_DEL_MULTI:
1034	>	AO_disable_multicast(gpr(3));
1035	>	break;
1036	>	case NATIVE_ETHER_AO_SEND_PACKET:
1037	>	AO_transmit_packet(gpr(3));
1038	>	break;
1039		case NATIVE_ETHER_IRQ:
1040		EtherIRQ();
1041		break;
#	Line 1134 | Line 1057 | void sheepshaver_cpu::execute_native_op(
1057		case NATIVE_ETHER_RSRV:
1058		gpr(3) = ether_rsrv((queue_t *)gpr(3));
1059		break;
1060	<	#else
1138	<	case NATIVE_ETHER_INIT:
1139	<	// FIXME: needs more complicated thunks
1140	<	gpr(3) = false;
1141	<	break;
1142	<	#endif
1143	<	case NATIVE_SYNC_HOOK:
1060	>	case NATIVE_NQD_SYNC_HOOK:
1061		gpr(3) = NQD_sync_hook(gpr(3));
1062		break;
1063	<	case NATIVE_BITBLT_HOOK:
1063	>	case NATIVE_NQD_UNKNOWN_HOOK:
1064	>	gpr(3) = NQD_unknown_hook(gpr(3));
1065	>	break;
1066	>	case NATIVE_NQD_BITBLT_HOOK:
1067		gpr(3) = NQD_bitblt_hook(gpr(3));
1068		break;
1069	<	case NATIVE_BITBLT:
1069	>	case NATIVE_NQD_BITBLT:
1070		NQD_bitblt(gpr(3));
1071		break;
1072	<	case NATIVE_FILLRECT_HOOK:
1072	>	case NATIVE_NQD_FILLRECT_HOOK:
1073		gpr(3) = NQD_fillrect_hook(gpr(3));
1074		break;
1075	<	case NATIVE_INVRECT:
1075	>	case NATIVE_NQD_INVRECT:
1076		NQD_invrect(gpr(3));
1077		break;
1078	<	case NATIVE_FILLRECT:
1078	>	case NATIVE_NQD_FILLRECT:
1079		NQD_fillrect(gpr(3));
1080		break;
1081		case NATIVE_SERIAL_NOTHING:
#	Line 1179 | Line 1099 | void sheepshaver_cpu::execute_native_op(
1099		break;
1100		}
1101		case NATIVE_GET_RESOURCE:
1102	+	get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1103	+	break;
1104		case NATIVE_GET_1_RESOURCE:
1105	+	get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1106	+	break;
1107		case NATIVE_GET_IND_RESOURCE:
1108	+	get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1109	+	break;
1110		case NATIVE_GET_1_IND_RESOURCE:
1111	<	case NATIVE_R_GET_RESOURCE: {
1112	<	typedef void (*GetResourceCallback)(void);
1113	<	static const GetResourceCallback get_resource_callbacks[] = {
1114	<	::get_resource,
1189	<	::get_1_resource,
1190	<	::get_ind_resource,
1191	<	::get_1_ind_resource,
1192	<	::r_get_resource
1193	<	};
1194	<	get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1111	>	get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1112	>	break;
1113	>	case NATIVE_R_GET_RESOURCE:
1114	>	get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1115		break;
1196	–	}
1116		case NATIVE_MAKE_EXECUTABLE:
1117		MakeExecutable(0, gpr(4), gpr(5));
1118		break;
1119		case NATIVE_CHECK_LOAD_INVOC:
1120		check_load_invoc(gpr(3), gpr(4), gpr(5));
1121		break;
1122	+	case NATIVE_NAMED_CHECK_LOAD_INVOC:
1123	+	named_check_load_invoc(gpr(3), gpr(4), gpr(5));
1124	+	break;
1125		default:
1126		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
1127		QuitEmulator();
#	Line 1286 | Line 1208 | uint32 call_macos7(uint32 tvect, uint32
1208		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 };
1209		return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1210		}
1289	–
1290	–	/*
1291	–	*  Resource Manager thunks
1292	–	*/
1293	–
1294	–	void get_resource(void)
1295	–	{
1296	–	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1297	–	}
1298	–
1299	–	void get_1_resource(void)
1300	–	{
1301	–	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1302	–	}
1303	–
1304	–	void get_ind_resource(void)
1305	–	{
1306	–	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1307	–	}
1308	–
1309	–	void get_1_ind_resource(void)
1310	–	{
1311	–	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1312	–	}
1313	–
1314	–	void r_get_resource(void)
1315	–	{
1316	–	ppc_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1317	–	}

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