[ViewVC] Diff of: cebix/SheepShaver/src/kpx_cpu/sheepshaver

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.41 by gbeauche, 2004-05-20T12:33:58Z vs.
Revision 1.55 by gbeauche, 2004-12-18T18:40:04Z

#	Line 42 \| Line 42
42
43		#include <stdio.h>
44		#include <stdlib.h>
45	+	#ifdef HAVE_MALLOC_H
46	+	#include <malloc.h>
47	+	#endif
48	+
49	+	#ifdef USE_SDL_VIDEO
50	+	#include <SDL_events.h>
51	+	#endif
52
53		#if ENABLE_MON
54		#include "mon.h"
#	Line 52 \| Line 59
59		#include "debug.h"
60
61		// Emulation time statistics
62	<	#define EMUL_TIME_STATS 1
62	>	#ifndef EMUL_TIME_STATS
63	>	#define EMUL_TIME_STATS 0
64	>	#endif
65
66		#if EMUL_TIME_STATS
67		static clock_t emul_start_time;
68	<	static uint32 interrupt_count = 0;
68	>	static uint32 interrupt_count = 0, ppc_interrupt_count = 0;
69		static clock_t interrupt_time = 0;
70		static uint32 exec68k_count = 0;
71		static clock_t exec68k_time = 0;
#	Line 99 \| Line 108 \| const uint32 POWERPC_EXEC_RETURN = POWER
108		// Interrupts in native mode?
109		#define INTERRUPTS_IN_NATIVE_MODE 1
110
102	–	// Enable native EMUL_OPs to be run without a mode switch
103	–	#define ENABLE_NATIVE_EMUL_OP 1
104	–
111		// Pointer to Kernel Data
112	<	static KernelData * const kernel_data = (KernelData *)KERNEL_DATA_BASE;
112	>	static KernelData * kernel_data;
113
114		// SIGSEGV handler
115	<	static sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
115	>	sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
116
117		#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
118		// Special trampolines for EmulOp and NativeOp
#	Line 136 \| Line 142 \| class sheepshaver_cpu
142		void init_decoder();
143		void execute_sheep(uint32 opcode);
144
139	–	// Filter out EMUL_OP routines that only call native code
140	–	bool filter_execute_emul_op(uint32 emul_op);
141	–
142	–	// "Native" EMUL_OP routines
143	–	void execute_emul_op_microseconds();
144	–	void execute_emul_op_idle_time_1();
145	–	void execute_emul_op_idle_time_2();
146	–
145		// CPU context to preserve on interrupt
146		class interrupt_context {
147		uint32 gpr[32];
#	Line 185 \| Line 183 \| public:
183		// Execute MacOS/PPC code
184		uint32 execute_macos_code(uint32 tvect, int nargs, uint32 const *args);
185
186	+	#if PPC_ENABLE_JIT
187		// Compile one instruction
188		virtual int compile1(codegen_context_t & cg_context);
189	<
189	>	#endif
190		// Resource manager thunk
191		void get_resource(uint32 old_get_resource);
192
#	Line 197 \| Line 196 \| public:
196
197		// Make sure the SIGSEGV handler can access CPU registers
198		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);
203		};
204
205		// Memory allocator returning areas aligned on 16-byte boundaries
206	<	void *operator new(size_t size)
206	>	void *sheepshaver_cpu::operator new(size_t size)
207		{
208		void *p;
209
#	Line 219 \| Line 222 \| *void operator new(size_t size)**
222		return p;
223		}
224
225	<	void operator delete(void *p)
225	>	void sheepshaver_cpu::operator delete(void *p)
226		{
227		#if defined(HAVE_MEMALIGN) \|\| defined(HAVE_VALLOC)
228		#if defined(__GLIBC__)
#	Line 268 \| Line 271 \| typedef bit_field< 19, 19 > FN_field;
271		typedef bit_field< 20, 25 > NATIVE_OP_field;
272		typedef bit_field< 26, 31 > EMUL_OP_field;
273
271	–	// "Native" EMUL_OP routines
272	–	#define GPR_A(REG) gpr(16 + (REG))
273	–	#define GPR_D(REG) gpr( 8 + (REG))
274	–
275	–	void sheepshaver_cpu::execute_emul_op_microseconds()
276	–	{
277	–	Microseconds(GPR_A(0), GPR_D(0));
278	–	}
279	–
280	–	void sheepshaver_cpu::execute_emul_op_idle_time_1()
281	–	{
282	–	// Sleep if no events pending
283	–	if (ReadMacInt32(0x14c) == 0)
284	–	Delay_usec(16667);
285	–	GPR_A(0) = ReadMacInt32(0x2b6);
286	–	}
287	–
288	–	void sheepshaver_cpu::execute_emul_op_idle_time_2()
289	–	{
290	–	// Sleep if no events pending
291	–	if (ReadMacInt32(0x14c) == 0)
292	–	Delay_usec(16667);
293	–	GPR_D(0) = (uint32)-2;
294	–	}
295	–
296	–	// Filter out EMUL_OP routines that only call native code
297	–	bool sheepshaver_cpu::filter_execute_emul_op(uint32 emul_op)
298	–	{
299	–	switch (emul_op) {
300	–	case OP_MICROSECONDS:
301	–	execute_emul_op_microseconds();
302	–	return true;
303	–	case OP_IDLE_TIME:
304	–	execute_emul_op_idle_time_1();
305	–	return true;
306	–	case OP_IDLE_TIME_2:
307	–	execute_emul_op_idle_time_2();
308	–	return true;
309	–	}
310	–	return false;
311	–	}
312	–
274		// Execute EMUL_OP routine
275		void sheepshaver_cpu::execute_emul_op(uint32 emul_op)
276		{
316	–	#if ENABLE_NATIVE_EMUL_OP
317	–	// First, filter out EMUL_OPs that can be executed without a mode switch
318	–	if (filter_execute_emul_op(emul_op))
319	–	return;
320	–	#endif
321	–
277		M68kRegisters r68;
278		WriteMacInt32(XLM_68K_R25, gpr(25));
279		WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
#	Line 371 \| Line 326 \| void sheepshaver_cpu::execute_sheep(uint
326		}
327
328		// Compile one instruction
329	+	#if PPC_ENABLE_JIT
330		int sheepshaver_cpu::compile1(codegen_context_t & cg_context)
331		{
376	–	#if PPC_ENABLE_JIT
332		const instr_info_t *ii = cg_context.instr_info;
333		if (ii->mnemo != PPC_I(SHEEP))
334		return COMPILE_FAILURE;
#	Line 444 \| Line 399 \| int sheepshaver_cpu::compile1(codegen_co
399		status = COMPILE_CODE_OK;
400		break;
401		#endif
447	–	case NATIVE_DISABLE_INTERRUPT:
448	–	dg.gen_invoke(DisableInterrupt);
449	–	status = COMPILE_CODE_OK;
450	–	break;
451	–	case NATIVE_ENABLE_INTERRUPT:
452	–	dg.gen_invoke(EnableInterrupt);
453	–	status = COMPILE_CODE_OK;
454	–	break;
402		case NATIVE_BITBLT:
403		dg.gen_load_T0_GPR(3);
404		dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt);
#	Line 469 \| Line 416 \| int sheepshaver_cpu::compile1(codegen_co
416		break;
417		}
418		// Could we fully translate this NativeOp?
419	<	if (FN_field::test(opcode)) {
420	<	if (status != COMPILE_FAILURE) {
419	>	if (status == COMPILE_CODE_OK) {
420	>	if (!FN_field::test(opcode))
421	>	cg_context.done_compile = false;
422	>	else {
423		dg.gen_load_A0_LR();
424		dg.gen_set_PC_A0();
425	+	cg_context.done_compile = true;
426		}
477	–	cg_context.done_compile = true;
478	–	break;
479	–	}
480	–	else if (status != COMPILE_FAILURE) {
481	–	cg_context.done_compile = false;
427		break;
428		}
429		#if PPC_REENTRANT_JIT
430		// Try to execute NativeOp trampoline
431	<	dg.gen_set_PC_im(cg_context.pc + 4);
431	>	if (!FN_field::test(opcode))
432	>	dg.gen_set_PC_im(cg_context.pc + 4);
433	>	else {
434	>	dg.gen_load_A0_LR();
435	>	dg.gen_set_PC_A0();
436	>	}
437		dg.gen_mov_32_T0_im(selector);
438		dg.gen_jmp(native_op_trampoline);
439		cg_context.done_compile = true;
#	Line 491 \| Line 441 \| int sheepshaver_cpu::compile1(codegen_co
441		break;
442		#endif
443		// Invoke NativeOp handler
444	<	typedef void (*func_t)(dyngen_cpu_base, uint32);
445	<	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
446	<	dg.gen_invoke_CPU_im(func, selector);
447	<	cg_context.done_compile = false;
448	<	status = COMPILE_CODE_OK;
444	>	if (!FN_field::test(opcode)) {
445	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
446	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
447	>	dg.gen_invoke_CPU_im(func, selector);
448	>	cg_context.done_compile = false;
449	>	status = COMPILE_CODE_OK;
450	>	}
451	>	// Otherwise, let it generate a call to execute_sheep() which
452	>	// will cause necessary updates to the program counter
453		break;
454		}
455
456		default: { // EMUL_OP
457		uint32 emul_op = EMUL_OP_field::extract(opcode) - 3;
504	–	#if ENABLE_NATIVE_EMUL_OP
505	–	typedef void (*emul_op_func_t)(dyngen_cpu_base);
506	–	emul_op_func_t emul_op_func = 0;
507	–	switch (emul_op) {
508	–	case OP_MICROSECONDS:
509	–	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_microseconds).ptr();
510	–	break;
511	–	case OP_IDLE_TIME:
512	–	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_1).ptr();
513	–	break;
514	–	case OP_IDLE_TIME_2:
515	–	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_2).ptr();
516	–	break;
517	–	}
518	–	if (emul_op_func) {
519	–	dg.gen_invoke_CPU(emul_op_func);
520	–	cg_context.done_compile = false;
521	–	status = COMPILE_CODE_OK;
522	–	break;
523	–	}
524	–	#endif
458		#if PPC_REENTRANT_JIT
459		// Try to execute EmulOp trampoline
460		dg.gen_set_PC_im(cg_context.pc + 4);
#	Line 541 \| Line 474 \| int sheepshaver_cpu::compile1(codegen_co
474		}
475		}
476		return status;
544	–	#endif
545	–	return COMPILE_FAILURE;
477		}
478	+	#endif
479
480		// CPU context to preserve on interrupt
481		sheepshaver_cpu::interrupt_context::interrupt_context(sheepshaver_cpu _cpu, const char _where)
#	Line 589 \| Line 521 \| sheepshaver_cpu::interrupt_context::~int
521		void sheepshaver_cpu::interrupt(uint32 entry)
522		{
523		#if EMUL_TIME_STATS
524	<	interrupt_count++;
524	>	ppc_interrupt_count++;
525		const clock_t interrupt_start = clock();
526		#endif
527
#	Line 875 \| Line 807 \| static void dump_log(void)
807		* Initialize CPU emulation
808		*/
809
810	<	static sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
810	>	sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
811		{
812		#if ENABLE_VOSF
813		// Handle screen fault
#	Line 887 \| Line 819 \| static sigsegv_return_t sigsegv_handler(
819		const uintptr addr = (uintptr)fault_address;
820		#if HAVE_SIGSEGV_SKIP_INSTRUCTION
821		// Ignore writes to ROM
822	<	if ((addr - ROM_BASE) < ROM_SIZE)
822	>	if ((addr - (uintptr)ROMBaseHost) < ROM_SIZE)
823		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
824
825		// Get program counter of target CPU
#	Line 895 \| Line 827 \| static sigsegv_return_t sigsegv_handler(
827		const uint32 pc = cpu->pc();
828
829		// Fault in Mac ROM or RAM?
830	<	bool mac_fault = (pc >= ROM_BASE) && (pc < (ROM_BASE + ROM_AREA_SIZE)) \|\| (pc >= RAMBase) && (pc < (RAMBase + RAMSize));
830	>	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));
831		if (mac_fault) {
832
833		// "VM settings" during MacOS 8 installation
#	Line 915 \| Line 847 \| static sigsegv_return_t sigsegv_handler(
847		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
848		else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 \|\| cpu->gpr(20) == 0xf3012000))
849		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
850	+
851	+	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
852	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(16) == 0xf3012002 \|\| cpu->gpr(16) == 0xf3012000))
853	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
854	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(20) == 0xf3012002 \|\| cpu->gpr(20) == 0xf3012000))
855	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
856
857		// Ignore writes to the zero page
858		else if ((uint32)(addr - SheepMem::ZeroPage()) < (uint32)SheepMem::PageSize())
#	Line 941 \| Line 879 \| static sigsegv_return_t sigsegv_handler(
879
880		void init_emul_ppc(void)
881		{
882	+	// Get pointer to KernelData in host address space
883	+	kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE);
884	+
885		// Initialize main CPU emulator
886		ppc_cpu = new sheepshaver_cpu();
887		ppc_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
888		ppc_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
889		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
890
950	–	// Install the handler for SIGSEGV
951	–	sigsegv_install_handler(sigsegv_handler);
952	–
891		#if ENABLE_MON
892		// Install "regs" command in cxmon
893		mon_add_command("regs", dump_registers, "regs Dump PowerPC registers\n");
#	Line 975 \| Line 913 \| void exit_emul_ppc(void)
913		printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
914		printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
915		(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
916	+	printf("Total ppc interrupt count: %d (%2.1f %%)\n", ppc_interrupt_count,
917	+	(double(ppc_interrupt_count) * 100.0) / double(interrupt_count));
918
919		#define PRINT_STATS(LABEL, VAR_PREFIX) do { \
920		printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count); \
#	Line 1050 \| Line 990 \| void TriggerInterrupt(void)
990
991		void sheepshaver_cpu::handle_interrupt(void)
992		{
993	<	// Do nothing if interrupts are disabled
994	<	if ((int32 )XLM_IRQ_NEST > 0)
995	<	return;
993	>	#ifdef USE_SDL_VIDEO
994	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
995	>	SDL_PumpEvents();
996	>	#endif
997
998	<	// Do nothing if there is no interrupt pending
999	<	if (InterruptFlags == 0)
998	>	// Do nothing if interrupts are disabled
999	>	if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
1000		return;
1001
1002		// Current interrupt nest level
1003		static int interrupt_depth = 0;
1004		++interrupt_depth;
1005	+	#if EMUL_TIME_STATS
1006	+	interrupt_count++;
1007	+	#endif
1008
1009		// Disable MacOS stack sniffer
1010		WriteMacInt32(0x110, 0);
#	Line 1100 \| Line 1044 \| void sheepshaver_cpu::handle_interrupt(v
1044		// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
1045		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1046		interrupt_context ctx(this, "68k mode");
1047	+	#if EMUL_TIME_STATS
1048	+	const clock_t interrupt_start = clock();
1049	+	#endif
1050		#if 1
1051		// Execute full 68k interrupt routine
1052		M68kRegisters r;
1053		uint32 old_r25 = ReadMacInt32(XLM_68K_R25); // Save interrupt level
1054		WriteMacInt32(XLM_68K_R25, 0x21); // Execute with interrupt level 1
1055	<	static const uint8 proc[] = {
1055	>	static const uint8 proc_template[] = {
1056		0x3f, 0x3c, 0x00, 0x00, // move.w #$0000,-(sp) (fake format word)
1057		0x48, 0x7a, 0x00, 0x0a, // pea @1(pc) (return address)
1058		0x40, 0xe7, // move sr,-(sp) (saved SR)
#	Line 1113 \| Line 1060 \| void sheepshaver_cpu::handle_interrupt(v
1060		0x4e, 0xd0, // jmp (a0)
1061		M68K_RTS >> 8, M68K_RTS & 0xff // @1
1062		};
1063	<	Execute68k((uint32)proc, &r);
1063	>	BUILD_SHEEPSHAVER_PROCEDURE(proc);
1064	>	Execute68k(proc, &r);
1065		WriteMacInt32(XLM_68K_R25, old_r25); // Restore interrupt level
1066		#else
1067		// Only update cursor
#	Line 1125 \| Line 1073 \| void sheepshaver_cpu::handle_interrupt(v
1073		}
1074		}
1075		#endif
1076	+	#if EMUL_TIME_STATS
1077	+	interrupt_time += (clock() - interrupt_start);
1078	+	#endif
1079		}
1080		break;
1081		#endif
#	Line 1159 \| Line 1110 \| void sheepshaver_cpu::execute_native_op(
1110		VideoVBL();
1111		break;
1112		case NATIVE_VIDEO_DO_DRIVER_IO:
1113	<	gpr(3) = (int32)(int16)VideoDoDriverIO((void )gpr(3), (void )gpr(4),
1163	<	(void *)gpr(5), gpr(6), gpr(7));
1113	>	gpr(3) = (int32)(int16)VideoDoDriverIO(gpr(3), gpr(4), gpr(5), gpr(6), gpr(7));
1114		break;
1165	–	#ifdef WORDS_BIGENDIAN
1115		case NATIVE_ETHER_IRQ:
1116		EtherIRQ();
1117		break;
#	Line 1184 \| Line 1133 \| void sheepshaver_cpu::execute_native_op(
1133		case NATIVE_ETHER_RSRV:
1134		gpr(3) = ether_rsrv((queue_t *)gpr(3));
1135		break;
1187	–	#else
1188	–	case NATIVE_ETHER_INIT:
1189	–	// FIXME: needs more complicated thunks
1190	–	gpr(3) = false;
1191	–	break;
1192	–	#endif
1136		case NATIVE_SYNC_HOOK:
1137		gpr(3) = NQD_sync_hook(gpr(3));
1138		break;
#	Line 1244 \| Line 1187 \| void sheepshaver_cpu::execute_native_op(
1187		get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1188		break;
1189		}
1247	–	case NATIVE_DISABLE_INTERRUPT:
1248	–	DisableInterrupt();
1249	–	break;
1250	–	case NATIVE_ENABLE_INTERRUPT:
1251	–	EnableInterrupt();
1252	–	break;
1190		case NATIVE_MAKE_EXECUTABLE:
1191	<	MakeExecutable(0, (void *)gpr(4), gpr(5));
1191	>	MakeExecutable(0, gpr(4), gpr(5));
1192		break;
1193		case NATIVE_CHECK_LOAD_INVOC:
1194		check_load_invoc(gpr(3), gpr(4), gpr(5));

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Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents): Revision 1.41 by gbeauche, 2004-05-20T12:33:58Z vs. Revision 1.55 by gbeauche, 2004-12-18T18:40:04Z

Diff Legend

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.41 by gbeauche, 2004-05-20T12:33:58Z vs.
Revision 1.55 by gbeauche, 2004-12-18T18:40:04Z