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

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.42 by gbeauche, 2004-05-23T05:28:12Z vs.
Revision 1.49 by gbeauche, 2004-07-11T06:42:28Z

#	Line 43 \| Line 43
43		#include <stdio.h>
44		#include <stdlib.h>
45
46	+	#ifdef USE_SDL_VIDEO
47	+	#include <SDL_events.h>
48	+	#endif
49	+
50		#if ENABLE_MON
51		#include "mon.h"
52		#include "mon_disass.h"
#	Line 52 \| Line 56
56		#include "debug.h"
57
58		// Emulation time statistics
59	<	#define EMUL_TIME_STATS 1
59	>	#ifndef EMUL_TIME_STATS
60	>	#define EMUL_TIME_STATS 0
61	>	#endif
62
63		#if EMUL_TIME_STATS
64		static clock_t emul_start_time;
65	<	static uint32 interrupt_count = 0;
65	>	static uint32 interrupt_count = 0, ppc_interrupt_count = 0;
66		static clock_t interrupt_time = 0;
67		static uint32 exec68k_count = 0;
68		static clock_t exec68k_time = 0;
#	Line 99 \| Line 105 \| const uint32 POWERPC_EXEC_RETURN = POWER
105		// Interrupts in native mode?
106		#define INTERRUPTS_IN_NATIVE_MODE 1
107
102	–	// Enable native EMUL_OPs to be run without a mode switch
103	–	#define ENABLE_NATIVE_EMUL_OP 1
104	–
108		// Pointer to Kernel Data
109		static KernelData * const kernel_data = (KernelData *)KERNEL_DATA_BASE;
110
111		// SIGSEGV handler
112	<	static sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
112	>	sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
113
114		#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
115		// Special trampolines for EmulOp and NativeOp
#	Line 136 \| Line 139 \| class sheepshaver_cpu
139		void init_decoder();
140		void execute_sheep(uint32 opcode);
141
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	–
142		// CPU context to preserve on interrupt
143		class interrupt_context {
144		uint32 gpr[32];
#	Line 268 \| Line 263 \| typedef bit_field< 19, 19 > FN_field;
263		typedef bit_field< 20, 25 > NATIVE_OP_field;
264		typedef bit_field< 26, 31 > EMUL_OP_field;
265
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	–
266		// Execute EMUL_OP routine
267		void sheepshaver_cpu::execute_emul_op(uint32 emul_op)
268		{
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	–
269		M68kRegisters r68;
270		WriteMacInt32(XLM_68K_R25, gpr(25));
271		WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
#	Line 444 \| Line 391 \| int sheepshaver_cpu::compile1(codegen_co
391		status = COMPILE_CODE_OK;
392		break;
393		#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;
394		case NATIVE_BITBLT:
395		dg.gen_load_T0_GPR(3);
396		dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt);
#	Line 508 \| Line 447 \| int sheepshaver_cpu::compile1(codegen_co
447
448		default: { // EMUL_OP
449		uint32 emul_op = EMUL_OP_field::extract(opcode) - 3;
511	–	#if ENABLE_NATIVE_EMUL_OP
512	–	typedef void (*emul_op_func_t)(dyngen_cpu_base);
513	–	emul_op_func_t emul_op_func = 0;
514	–	switch (emul_op) {
515	–	case OP_MICROSECONDS:
516	–	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_microseconds).ptr();
517	–	break;
518	–	case OP_IDLE_TIME:
519	–	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_1).ptr();
520	–	break;
521	–	case OP_IDLE_TIME_2:
522	–	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_2).ptr();
523	–	break;
524	–	}
525	–	if (emul_op_func) {
526	–	dg.gen_invoke_CPU(emul_op_func);
527	–	cg_context.done_compile = false;
528	–	status = COMPILE_CODE_OK;
529	–	break;
530	–	}
531	–	#endif
450		#if PPC_REENTRANT_JIT
451		// Try to execute EmulOp trampoline
452		dg.gen_set_PC_im(cg_context.pc + 4);
#	Line 596 \| Line 514 \| sheepshaver_cpu::interrupt_context::~int
514		void sheepshaver_cpu::interrupt(uint32 entry)
515		{
516		#if EMUL_TIME_STATS
517	<	interrupt_count++;
517	>	ppc_interrupt_count++;
518		const clock_t interrupt_start = clock();
519		#endif
520
#	Line 882 \| Line 800 \| static void dump_log(void)
800		* Initialize CPU emulation
801		*/
802
803	<	static sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
803	>	sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
804		{
805		#if ENABLE_VOSF
806		// Handle screen fault
#	Line 902 \| Line 820 \| static sigsegv_return_t sigsegv_handler(
820		const uint32 pc = cpu->pc();
821
822		// Fault in Mac ROM or RAM?
823	<	bool mac_fault = (pc >= ROM_BASE) && (pc < (ROM_BASE + ROM_AREA_SIZE)) \|\| (pc >= RAMBase) && (pc < (RAMBase + RAMSize));
823	>	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));
824		if (mac_fault) {
825
826		// "VM settings" during MacOS 8 installation
#	Line 922 \| Line 840 \| static sigsegv_return_t sigsegv_handler(
840		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
841		else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 \|\| cpu->gpr(20) == 0xf3012000))
842		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
843	+
844	+	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
845	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(16) == 0xf3012002 \|\| cpu->gpr(16) == 0xf3012000))
846	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
847	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(20) == 0xf3012002 \|\| cpu->gpr(20) == 0xf3012000))
848	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
849
850		// Ignore writes to the zero page
851		else if ((uint32)(addr - SheepMem::ZeroPage()) < (uint32)SheepMem::PageSize())
#	Line 954 \| Line 878 \| void init_emul_ppc(void)
878		ppc_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
879		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
880
957	–	// Install the handler for SIGSEGV
958	–	sigsegv_install_handler(sigsegv_handler);
959	–
881		#if ENABLE_MON
882		// Install "regs" command in cxmon
883		mon_add_command("regs", dump_registers, "regs Dump PowerPC registers\n");
#	Line 982 \| Line 903 \| void exit_emul_ppc(void)
903		printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
904		printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
905		(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
906	+	printf("Total ppc interrupt count: %d (%2.1f %%)\n", ppc_interrupt_count,
907	+	(double(ppc_interrupt_count) * 100.0) / double(interrupt_count));
908
909		#define PRINT_STATS(LABEL, VAR_PREFIX) do { \
910		printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count); \
#	Line 1057 \| Line 980 \| void TriggerInterrupt(void)
980
981		void sheepshaver_cpu::handle_interrupt(void)
982		{
983	<	// Do nothing if interrupts are disabled
984	<	if ((int32 )XLM_IRQ_NEST > 0)
985	<	return;
983	>	#ifdef USE_SDL_VIDEO
984	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
985	>	SDL_PumpEvents();
986	>	#endif
987
988	<	// Do nothing if there is no interrupt pending
989	<	if (InterruptFlags == 0)
988	>	// Do nothing if interrupts are disabled
989	>	if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
990		return;
991
992		// Current interrupt nest level
993		static int interrupt_depth = 0;
994		++interrupt_depth;
995	+	#if EMUL_TIME_STATS
996	+	interrupt_count++;
997	+	#endif
998
999		// Disable MacOS stack sniffer
1000		WriteMacInt32(0x110, 0);
#	Line 1107 \| Line 1034 \| void sheepshaver_cpu::handle_interrupt(v
1034		// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
1035		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1036		interrupt_context ctx(this, "68k mode");
1037	+	#if EMUL_TIME_STATS
1038	+	const clock_t interrupt_start = clock();
1039	+	#endif
1040		#if 1
1041		// Execute full 68k interrupt routine
1042		M68kRegisters r;
#	Line 1132 \| Line 1062 \| void sheepshaver_cpu::handle_interrupt(v
1062		}
1063		}
1064		#endif
1065	+	#if EMUL_TIME_STATS
1066	+	interrupt_time += (clock() - interrupt_start);
1067	+	#endif
1068		}
1069		break;
1070		#endif
#	Line 1251 \| Line 1184 \| void sheepshaver_cpu::execute_native_op(
1184		get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1185		break;
1186		}
1254	–	case NATIVE_DISABLE_INTERRUPT:
1255	–	DisableInterrupt();
1256	–	break;
1257	–	case NATIVE_ENABLE_INTERRUPT:
1258	–	EnableInterrupt();
1259	–	break;
1187		case NATIVE_MAKE_EXECUTABLE:
1188		MakeExecutable(0, (void *)gpr(4), gpr(5));
1189		break;

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Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents): Revision 1.42 by gbeauche, 2004-05-23T05:28:12Z vs. Revision 1.49 by gbeauche, 2004-07-11T06:42:28Z

Diff Legend

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.42 by gbeauche, 2004-05-23T05:28:12Z vs.
Revision 1.49 by gbeauche, 2004-07-11T06:42:28Z