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

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.39 by gbeauche, 2004-05-20T11:05:30Z vs.
Revision 1.75 by gbeauche, 2008-01-01T09:47:39Z

#	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) 1997-2008 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 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 80 \| 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
87	–	// Enable multicore (main/interrupts) cpu emulation?
88	–	#define MULTICORE_CPU (ASYNC_IRQ ? 1 : 0)
89	–
90	–	// Enable interrupt routine safety checks?
91	–	#define SAFE_INTERRUPT_PPC 1
92	–
97		// Enable Execute68k() safety checks?
98		#define SAFE_EXEC_68K 1
99
#	Line 102 \| Line 106 \| const uint32 POWERPC_EXEC_RETURN = POWER
106		// Interrupts in native mode?
107		#define INTERRUPTS_IN_NATIVE_MODE 1
108
105	–	// Enable native EMUL_OPs to be run without a mode switch
106	–	#define ENABLE_NATIVE_EMUL_OP 1
107	–
109		// Pointer to Kernel Data
110	<	static KernelData * const kernel_data = (KernelData *)KERNEL_DATA_BASE;
110	>	static KernelData * kernel_data;
111
112		// SIGSEGV handler
113	<	static sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
113	>	sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
114
115		#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
116		// Special trampolines for EmulOp and NativeOp
#	Line 117 \| Line 118 \| *static uint8 emul_op_trampoline;**
118		static uint8 *native_op_trampoline;
119		#endif
120
120	–	// JIT Compiler enabled?
121	–	static inline bool enable_jit_p()
122	–	{
123	–	return PrefsFindBool("jit");
124	–	}
125	–
121
122		/**
123		* PowerPC emulator glue with special 'sheep' opcodes
#	Line 139 \| Line 134 \| class sheepshaver_cpu
134		void init_decoder();
135		void execute_sheep(uint32 opcode);
136
142	–	// Filter out EMUL_OP routines that only call native code
143	–	bool filter_execute_emul_op(uint32 emul_op);
144	–
145	–	// "Native" EMUL_OP routines
146	–	void execute_emul_op_microseconds();
147	–	void execute_emul_op_idle_time_1();
148	–	void execute_emul_op_idle_time_2();
149	–
150	–	// CPU context to preserve on interrupt
151	–	class interrupt_context {
152	–	uint32 gpr[32];
153	–	uint32 pc;
154	–	uint32 lr;
155	–	uint32 ctr;
156	–	uint32 cr;
157	–	uint32 xer;
158	–	sheepshaver_cpu *cpu;
159	–	const char *where;
160	–	public:
161	–	interrupt_context(sheepshaver_cpu _cpu, const char _where);
162	–	~interrupt_context();
163	–	};
164	–
137		public:
138
139		// Constructor
#	Line 188 \| Line 160 \| public:
160		// Execute MacOS/PPC code
161		uint32 execute_macos_code(uint32 tvect, int nargs, uint32 const *args);
162
163	+	#if PPC_ENABLE_JIT
164		// Compile one instruction
165		virtual int compile1(codegen_context_t & cg_context);
166	<
166	>	#endif
167		// Resource manager thunk
168		void get_resource(uint32 old_get_resource);
169
170		// Handle MacOS interrupt
171		void interrupt(uint32 entry);
199	–	void handle_interrupt();
172
173		// Make sure the SIGSEGV handler can access CPU registers
174	<	friend sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
174	>	friend sigsegv_return_t sigsegv_handler(sigsegv_info_t *sip);
175		};
176
205	–	// Memory allocator returning areas aligned on 16-byte boundaries
206	–	void *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 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	–
177		sheepshaver_cpu::sheepshaver_cpu()
238	–	: powerpc_cpu(enable_jit_p())
178		{
179		init_decoder();
180	+
181	+	#if PPC_ENABLE_JIT
182	+	if (PrefsFindBool("jit"))
183	+	enable_jit();
184	+	#endif
185		}
186
187		void sheepshaver_cpu::init_decoder()
#	Line 245 \| Line 189 \| void sheepshaver_cpu::init_decoder()
189		static const instr_info_t sheep_ii_table[] = {
190		{ "sheep",
191		(execute_pmf)&sheepshaver_cpu::execute_sheep,
248	–	NULL,
192		PPC_I(SHEEP),
193		D_form, 6, 0, CFLOW_JUMP \| CFLOW_TRAP
194		}
#	Line 271 \| Line 214 \| typedef bit_field< 19, 19 > FN_field;
214		typedef bit_field< 20, 25 > NATIVE_OP_field;
215		typedef bit_field< 26, 31 > EMUL_OP_field;
216
274	–	// "Native" EMUL_OP routines
275	–	#define GPR_A(REG) gpr(16 + (REG))
276	–	#define GPR_D(REG) gpr( 8 + (REG))
277	–
278	–	void sheepshaver_cpu::execute_emul_op_microseconds()
279	–	{
280	–	Microseconds(GPR_A(0), GPR_D(0));
281	–	}
282	–
283	–	void sheepshaver_cpu::execute_emul_op_idle_time_1()
284	–	{
285	–	// Sleep if no events pending
286	–	if (ReadMacInt32(0x14c) == 0)
287	–	Delay_usec(16667);
288	–	GPR_A(0) = ReadMacInt32(0x2b6);
289	–	}
290	–
291	–	void sheepshaver_cpu::execute_emul_op_idle_time_2()
292	–	{
293	–	// Sleep if no events pending
294	–	if (ReadMacInt32(0x14c) == 0)
295	–	Delay_usec(16667);
296	–	GPR_D(0) = (uint32)-2;
297	–	}
298	–
299	–	// Filter out EMUL_OP routines that only call native code
300	–	bool sheepshaver_cpu::filter_execute_emul_op(uint32 emul_op)
301	–	{
302	–	switch (emul_op) {
303	–	case OP_MICROSECONDS:
304	–	execute_emul_op_microseconds();
305	–	return true;
306	–	case OP_IDLE_TIME:
307	–	execute_emul_op_idle_time_1();
308	–	return true;
309	–	case OP_IDLE_TIME_2:
310	–	execute_emul_op_idle_time_2();
311	–	return true;
312	–	}
313	–	return false;
314	–	}
315	–
217		// Execute EMUL_OP routine
218		void sheepshaver_cpu::execute_emul_op(uint32 emul_op)
219		{
319	–	#if ENABLE_NATIVE_EMUL_OP
320	–	// First, filter out EMUL_OPs that can be executed without a mode switch
321	–	if (filter_execute_emul_op(emul_op))
322	–	return;
323	–	#endif
324	–
220		M68kRegisters r68;
221		WriteMacInt32(XLM_68K_R25, gpr(25));
222		WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
#	Line 330 \| Line 225 \| void sheepshaver_cpu::execute_emul_op(ui
225		for (int i = 0; i < 7; i++)
226		r68.a[i] = gpr(16 + i);
227		r68.a[7] = gpr(1);
228	<	uint32 saved_cr = get_cr() & CR_field<2>::mask();
228	>	uint32 saved_cr = get_cr() & 0xff9fffff; // mask_operand::compute(11, 8)
229		uint32 saved_xer = get_xer();
230		EmulOp(&r68, gpr(24), emul_op);
231		set_cr(saved_cr);
#	Line 374 \| Line 269 \| void sheepshaver_cpu::execute_sheep(uint
269		}
270
271		// Compile one instruction
272	+	#if PPC_ENABLE_JIT
273		int sheepshaver_cpu::compile1(codegen_context_t & cg_context)
274		{
379	–	#if PPC_ENABLE_JIT
275		const instr_info_t *ii = cg_context.instr_info;
276		if (ii->mnemo != PPC_I(SHEEP))
277		return COMPILE_FAILURE;
#	Line 438 \| Line 333 \| int sheepshaver_cpu::compile1(codegen_co
333		status = COMPILE_CODE_OK;
334		break;
335		}
336	+	#endif
337		case NATIVE_CHECK_LOAD_INVOC:
338		dg.gen_load_T0_GPR(3);
339		dg.gen_load_T1_GPR(4);
#	Line 446 \| Line 342 \| int sheepshaver_cpu::compile1(codegen_co
342		dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc);
343		status = COMPILE_CODE_OK;
344		break;
345	<	#endif
346	<	case NATIVE_DISABLE_INTERRUPT:
347	<	dg.gen_invoke(DisableInterrupt);
345	>	case NATIVE_NAMED_CHECK_LOAD_INVOC:
346	>	dg.gen_load_T0_GPR(3);
347	>	dg.gen_load_T1_GPR(4);
348	>	dg.gen_load_T2_GPR(5);
349	>	dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))named_check_load_invoc);
350	>	status = COMPILE_CODE_OK;
351	>	break;
352	>	case NATIVE_NQD_SYNC_HOOK:
353	>	dg.gen_load_T0_GPR(3);
354	>	dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_sync_hook);
355	>	dg.gen_store_T0_GPR(3);
356		status = COMPILE_CODE_OK;
357		break;
358	<	case NATIVE_ENABLE_INTERRUPT:
359	<	dg.gen_invoke(EnableInterrupt);
358	>	case NATIVE_NQD_BITBLT_HOOK:
359	>	dg.gen_load_T0_GPR(3);
360	>	dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_bitblt_hook);
361	>	dg.gen_store_T0_GPR(3);
362		status = COMPILE_CODE_OK;
363		break;
364	<	case NATIVE_BITBLT:
364	>	case NATIVE_NQD_FILLRECT_HOOK:
365	>	dg.gen_load_T0_GPR(3);
366	>	dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_fillrect_hook);
367	>	dg.gen_store_T0_GPR(3);
368	>	status = COMPILE_CODE_OK;
369	>	break;
370	>	case NATIVE_NQD_UNKNOWN_HOOK:
371	>	dg.gen_load_T0_GPR(3);
372	>	dg.gen_invoke_T0_ret_T0((uint32 (*)(uint32))NQD_unknown_hook);
373	>	dg.gen_store_T0_GPR(3);
374	>	status = COMPILE_CODE_OK;
375	>	break;
376	>	case NATIVE_NQD_BITBLT:
377		dg.gen_load_T0_GPR(3);
378		dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt);
379		status = COMPILE_CODE_OK;
380		break;
381	<	case NATIVE_INVRECT:
381	>	case NATIVE_NQD_INVRECT:
382		dg.gen_load_T0_GPR(3);
383		dg.gen_invoke_T0((void (*)(uint32))NQD_invrect);
384		status = COMPILE_CODE_OK;
385		break;
386	<	case NATIVE_FILLRECT:
386	>	case NATIVE_NQD_FILLRECT:
387		dg.gen_load_T0_GPR(3);
388		dg.gen_invoke_T0((void (*)(uint32))NQD_fillrect);
389		status = COMPILE_CODE_OK;
390		break;
391		}
392		// Could we fully translate this NativeOp?
393	<	if (FN_field::test(opcode)) {
394	<	if (status != COMPILE_FAILURE) {
395	<	dg.gen_load_A0_LR();
396	<	dg.gen_set_PC_A0();
393	>	if (status == COMPILE_CODE_OK) {
394	>	if (!FN_field::test(opcode))
395	>	cg_context.done_compile = false;
396	>	else {
397	>	dg.gen_load_T0_LR_aligned();
398	>	dg.gen_set_PC_T0();
399	>	cg_context.done_compile = true;
400		}
480	–	cg_context.done_compile = true;
481	–	break;
482	–	}
483	–	else if (status != COMPILE_FAILURE) {
484	–	cg_context.done_compile = false;
401		break;
402		}
403		#if PPC_REENTRANT_JIT
404		// Try to execute NativeOp trampoline
405	<	dg.gen_set_PC_im(cg_context.pc + 4);
405	>	if (!FN_field::test(opcode))
406	>	dg.gen_set_PC_im(cg_context.pc + 4);
407	>	else {
408	>	dg.gen_load_T0_LR_aligned();
409	>	dg.gen_set_PC_T0();
410	>	}
411		dg.gen_mov_32_T0_im(selector);
412		dg.gen_jmp(native_op_trampoline);
413		cg_context.done_compile = true;
#	Line 494 \| Line 415 \| int sheepshaver_cpu::compile1(codegen_co
415		break;
416		#endif
417		// Invoke NativeOp handler
418	<	typedef void (*func_t)(dyngen_cpu_base, uint32);
419	<	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
420	<	dg.gen_invoke_CPU_im(func, selector);
421	<	cg_context.done_compile = false;
422	<	status = COMPILE_CODE_OK;
418	>	if (!FN_field::test(opcode)) {
419	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
420	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
421	>	dg.gen_invoke_CPU_im(func, selector);
422	>	cg_context.done_compile = false;
423	>	status = COMPILE_CODE_OK;
424	>	}
425	>	// Otherwise, let it generate a call to execute_sheep() which
426	>	// will cause necessary updates to the program counter
427		break;
428		}
429
430		default: { // EMUL_OP
431		uint32 emul_op = EMUL_OP_field::extract(opcode) - 3;
507	–	#if ENABLE_NATIVE_EMUL_OP
508	–	typedef void (*emul_op_func_t)(dyngen_cpu_base);
509	–	emul_op_func_t emul_op_func = 0;
510	–	switch (emul_op) {
511	–	case OP_MICROSECONDS:
512	–	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_microseconds).ptr();
513	–	break;
514	–	case OP_IDLE_TIME:
515	–	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_1).ptr();
516	–	break;
517	–	case OP_IDLE_TIME_2:
518	–	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_2).ptr();
519	–	break;
520	–	}
521	–	if (emul_op_func) {
522	–	dg.gen_invoke_CPU(emul_op_func);
523	–	cg_context.done_compile = false;
524	–	status = COMPILE_CODE_OK;
525	–	break;
526	–	}
527	–	#endif
432		#if PPC_REENTRANT_JIT
433		// Try to execute EmulOp trampoline
434		dg.gen_set_PC_im(cg_context.pc + 4);
#	Line 544 \| Line 448 \| int sheepshaver_cpu::compile1(codegen_co
448		}
449		}
450		return status;
547	–	#endif
548	–	return COMPILE_FAILURE;
451		}
550	–
551	–	// CPU context to preserve on interrupt
552	–	sheepshaver_cpu::interrupt_context::interrupt_context(sheepshaver_cpu _cpu, const char _where)
553	–	{
554	–	#if SAFE_INTERRUPT_PPC >= 2
555	–	cpu = _cpu;
556	–	where = _where;
557	–
558	–	// Save interrupt context
559	–	memcpy(&gpr[0], &cpu->gpr(0), sizeof(gpr));
560	–	pc = cpu->pc();
561	–	lr = cpu->lr();
562	–	ctr = cpu->ctr();
563	–	cr = cpu->get_cr();
564	–	xer = cpu->get_xer();
452		#endif
566	–	}
567	–
568	–	sheepshaver_cpu::interrupt_context::~interrupt_context()
569	–	{
570	–	#if SAFE_INTERRUPT_PPC >= 2
571	–	// Check whether CPU context was preserved by interrupt
572	–	if (memcmp(&gpr[0], &cpu->gpr(0), sizeof(gpr)) != 0) {
573	–	printf("FATAL: %s: interrupt clobbers registers\n", where);
574	–	for (int i = 0; i < 32; i++)
575	–	if (gpr[i] != cpu->gpr(i))
576	–	printf(" r%d: %08x -> %08x\n", i, gpr[i], cpu->gpr(i));
577	–	}
578	–	if (pc != cpu->pc())
579	–	printf("FATAL: %s: interrupt clobbers PC\n", where);
580	–	if (lr != cpu->lr())
581	–	printf("FATAL: %s: interrupt clobbers LR\n", where);
582	–	if (ctr != cpu->ctr())
583	–	printf("FATAL: %s: interrupt clobbers CTR\n", where);
584	–	if (cr != cpu->get_cr())
585	–	printf("FATAL: %s: interrupt clobbers CR\n", where);
586	–	if (xer != cpu->get_xer())
587	–	printf("FATAL: %s: interrupt clobbers XER\n", where);
588	–	#endif
589	–	}
453
454		// Handle MacOS interrupt
455		void sheepshaver_cpu::interrupt(uint32 entry)
456		{
457		#if EMUL_TIME_STATS
458	<	interrupt_count++;
458	>	ppc_interrupt_count++;
459		const clock_t interrupt_start = clock();
460		#endif
461
599	–	#if SAFE_INTERRUPT_PPC
600	–	static int depth = 0;
601	–	if (depth != 0)
602	–	printf("FATAL: sheepshaver_cpu::interrupt() called more than once: %d\n", depth);
603	–	depth++;
604	–	#endif
605	–
606	–	#if !MULTICORE_CPU
462		// Save program counters and branch registers
463		uint32 saved_pc = pc();
464		uint32 saved_lr = lr();
465		uint32 saved_ctr= ctr();
466		uint32 saved_sp = gpr(1);
612	–	#endif
467
468		// Initialize stack pointer to SheepShaver alternate stack base
469		gpr(1) = SignalStackBase() - 64;
#	Line 649 \| Line 503 \| void sheepshaver_cpu::interrupt(uint32 e
503		// Enter nanokernel
504		execute(entry);
505
652	–	#if !MULTICORE_CPU
506		// Restore program counters and branch registers
507		pc() = saved_pc;
508		lr() = saved_lr;
509		ctr()= saved_ctr;
510		gpr(1) = saved_sp;
658	–	#endif
511
512		#if EMUL_TIME_STATS
513		interrupt_time += (clock() - interrupt_start);
514		#endif
663	–
664	–	#if SAFE_INTERRUPT_PPC
665	–	depth--;
666	–	#endif
515		}
516
517		// Execute 68k routine
#	Line 857 \| Line 705 \| inline void sheepshaver_cpu::get_resourc
705		* SheepShaver CPU engine interface
706		**/
707
708	<	static sheepshaver_cpu *main_cpu = NULL; // CPU emulator to handle usual control flow
709	<	static sheepshaver_cpu *interrupt_cpu = NULL; // CPU emulator to handle interrupts
862	<	static sheepshaver_cpu *current_cpu = NULL; // Current CPU emulator context
708	>	// PowerPC CPU emulator
709	>	static sheepshaver_cpu *ppc_cpu = NULL;
710
711		void FlushCodeCache(uintptr start, uintptr end)
712		{
713		D(bug("FlushCodeCache(%08x, %08x)\n", start, end));
714	<	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
714	>	ppc_cpu->invalidate_cache_range(start, end);
715		}
716
717		// Dump PPC registers
718		static void dump_registers(void)
719		{
720	<	current_cpu->dump_registers();
720	>	ppc_cpu->dump_registers();
721		}
722
723		// Dump log
724		static void dump_log(void)
725		{
726	<	current_cpu->dump_log();
726	>	ppc_cpu->dump_log();
727		}
728
729		/*
730		* Initialize CPU emulation
731		*/
732
733	<	static sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
733	>	sigsegv_return_t sigsegv_handler(sigsegv_info_t *sip)
734		{
735		#if ENABLE_VOSF
736		// Handle screen fault
737	<	extern bool Screen_fault_handler(sigsegv_address_t, sigsegv_address_t);
738	<	if (Screen_fault_handler(fault_address, fault_instruction))
737	>	extern bool Screen_fault_handler(sigsegv_info_t *sip);
738	>	if (Screen_fault_handler(sip))
739		return SIGSEGV_RETURN_SUCCESS;
740		#endif
741
742	<	const uintptr addr = (uintptr)fault_address;
742	>	const uintptr addr = (uintptr)sigsegv_get_fault_address(sip);
743		#if HAVE_SIGSEGV_SKIP_INSTRUCTION
744		// Ignore writes to ROM
745	<	if ((addr - ROM_BASE) < ROM_SIZE)
745	>	if ((addr - (uintptr)ROMBaseHost) < ROM_SIZE)
746		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
747
748		// Get program counter of target CPU
749	<	sheepshaver_cpu * const cpu = current_cpu;
749	>	sheepshaver_cpu * const cpu = ppc_cpu;
750		const uint32 pc = cpu->pc();
751
752		// Fault in Mac ROM or RAM?
753	<	bool mac_fault = (pc >= ROM_BASE) && (pc < (ROM_BASE + ROM_AREA_SIZE)) \|\| (pc >= RAMBase) && (pc < (RAMBase + RAMSize));
753	>	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));
754		if (mac_fault) {
755
756		// "VM settings" during MacOS 8 installation
#	Line 940 \| Line 770 \| static sigsegv_return_t sigsegv_handler(
770		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
771		else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 \|\| cpu->gpr(20) == 0xf3012000))
772		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
773	+
774	+	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
775	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(16) == 0xf3012002 \|\| cpu->gpr(16) == 0xf3012000))
776	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
777	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(20) == 0xf3012002 \|\| cpu->gpr(20) == 0xf3012000))
778	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
779
780		// Ignore writes to the zero page
781		else if ((uint32)(addr - SheepMem::ZeroPage()) < (uint32)SheepMem::PageSize())
#	Line 953 \| Line 789 \| static sigsegv_return_t sigsegv_handler(
789		#error "FIXME: You don't have the capability to skip instruction within signal handlers"
790		#endif
791
792	<	printf("SIGSEGV\n");
793	<	printf(" pc %p\n", fault_instruction);
794	<	printf(" ea %p\n", fault_address);
959	<	printf(" cpu %s\n", current_cpu == main_cpu ? "main" : "interrupts");
792	>	fprintf(stderr, "SIGSEGV\n");
793	>	fprintf(stderr, " pc %p\n", sigsegv_get_fault_instruction_address(sip));
794	>	fprintf(stderr, " ea %p\n", sigsegv_get_fault_address(sip));
795		dump_registers();
796	<	current_cpu->dump_log();
796	>	ppc_cpu->dump_log();
797		enter_mon();
798		QuitEmulator();
799
#	Line 967 \| Line 802 \| static sigsegv_return_t sigsegv_handler(
802
803		void init_emul_ppc(void)
804		{
805	+	// Get pointer to KernelData in host address space
806	+	kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE);
807	+
808		// Initialize main CPU emulator
809	<	main_cpu = new sheepshaver_cpu();
810	<	main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
811	<	main_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
809	>	ppc_cpu = new sheepshaver_cpu();
810	>	ppc_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
811	>	ppc_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
812		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
813
976	–	#if MULTICORE_CPU
977	–	// Initialize alternate CPU emulator to handle interrupts
978	–	interrupt_cpu = new sheepshaver_cpu();
979	–	#endif
980	–
981	–	// Install the handler for SIGSEGV
982	–	sigsegv_install_handler(sigsegv_handler);
983	–
814		#if ENABLE_MON
815		// Install "regs" command in cxmon
816		mon_add_command("regs", dump_registers, "regs Dump PowerPC registers\n");
#	Line 1006 \| Line 836 \| void exit_emul_ppc(void)
836		printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
837		printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
838		(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
839	+	printf("Total ppc interrupt count: %d (%2.1f %%)\n", ppc_interrupt_count,
840	+	(double(ppc_interrupt_count) * 100.0) / double(interrupt_count));
841
842		#define PRINT_STATS(LABEL, VAR_PREFIX) do { \
843		printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count); \
#	Line 1022 \| Line 854 \| void exit_emul_ppc(void)
854		printf("\n");
855		#endif
856
857	<	delete main_cpu;
858	<	#if MULTICORE_CPU
1027	<	delete interrupt_cpu;
1028	<	#endif
857	>	delete ppc_cpu;
858	>	ppc_cpu = NULL;
859		}
860
861		#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
#	Line 1060 \| Line 890 \| void init_emul_op_trampolines(basic_dyng
890
891		void emul_ppc(uint32 entry)
892		{
1063	–	current_cpu = main_cpu;
893		#if 0
894	<	current_cpu->start_log();
894	>	ppc_cpu->start_log();
895		#endif
896		// start emulation loop and enable code translation or caching
897	<	current_cpu->execute(entry);
897	>	ppc_cpu->execute(entry);
898		}
899
900		/*
901		* Handle PowerPC interrupt
902		*/
903
1075	–	#if ASYNC_IRQ
1076	–	void HandleInterrupt(void)
1077	–	{
1078	–	main_cpu->handle_interrupt();
1079	–	}
1080	–	#else
904		void TriggerInterrupt(void)
905		{
906	+	idle_resume();
907		#if 0
908		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
909		#else
910		// Trigger interrupt to main cpu only
911	<	if (main_cpu)
912	<	main_cpu->trigger_interrupt();
911	>	if (ppc_cpu)
912	>	ppc_cpu->trigger_interrupt();
913		#endif
914		}
1091	–	#endif
915
916	<	void sheepshaver_cpu::handle_interrupt(void)
916	>	void HandleInterrupt(powerpc_registers *r)
917		{
918	<	// Do nothing if interrupts are disabled
919	<	if ((int32 )XLM_IRQ_NEST > 0)
920	<	return;
918	>	#ifdef USE_SDL_VIDEO
919	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
920	>	SDL_PumpEvents();
921	>	#endif
922
923	<	// Do nothing if there is no interrupt pending
924	<	if (InterruptFlags == 0)
923	>	// Do nothing if interrupts are disabled
924	>	if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
925		return;
926
927	<	// Disable MacOS stack sniffer
928	<	WriteMacInt32(0x110, 0);
927	>	// Update interrupt count
928	>	#if EMUL_TIME_STATS
929	>	interrupt_count++;
930	>	#endif
931
932		// Interrupt action depends on current run mode
933		switch (ReadMacInt32(XLM_RUN_MODE)) {
934		case MODE_68K:
935		// 68k emulator active, trigger 68k interrupt level 1
1110	–	assert(current_cpu == main_cpu);
936		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
937	<	set_cr(get_cr() \| tswap32(kernel_data->v[0x674 >> 2]));
937	>	r->cr.set(r->cr.get() \| tswap32(kernel_data->v[0x674 >> 2]));
938		break;
939
940		#if INTERRUPTS_IN_NATIVE_MODE
941		case MODE_NATIVE:
942		// 68k emulator inactive, in nanokernel?
943	<	assert(current_cpu == main_cpu);
1119	<	if (gpr(1) != KernelDataAddr) {
1120	<	interrupt_context ctx(this, "PowerPC mode");
943	>	if (r->gpr[1] != KernelDataAddr) {
944
945		// Prepare for 68k interrupt level 1
946		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
#	Line 1127 \| Line 950 \| void sheepshaver_cpu::handle_interrupt(v
950
951		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
952		DisableInterrupt();
1130	–	cpu_push(interrupt_cpu);
953		if (ROMType == ROMTYPE_NEWWORLD)
954	<	current_cpu->interrupt(ROM_BASE + 0x312b1c);
954	>	ppc_cpu->interrupt(ROM_BASE + 0x312b1c);
955		else
956	<	current_cpu->interrupt(ROM_BASE + 0x312a3c);
1135	<	cpu_pop();
956	>	ppc_cpu->interrupt(ROM_BASE + 0x312a3c);
957		}
958		break;
959		#endif
#	Line 1141 \| Line 962 \| void sheepshaver_cpu::handle_interrupt(v
962		case MODE_EMUL_OP:
963		// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
964		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
965	<	interrupt_context ctx(this, "68k mode");
965	>	#if EMUL_TIME_STATS
966	>	const clock_t interrupt_start = clock();
967	>	#endif
968		#if 1
969		// Execute full 68k interrupt routine
970		M68kRegisters r;
971		uint32 old_r25 = ReadMacInt32(XLM_68K_R25); // Save interrupt level
972		WriteMacInt32(XLM_68K_R25, 0x21); // Execute with interrupt level 1
973	<	static const uint8 proc[] = {
973	>	static const uint8 proc_template[] = {
974		0x3f, 0x3c, 0x00, 0x00, // move.w #$0000,-(sp) (fake format word)
975		0x48, 0x7a, 0x00, 0x0a, // pea @1(pc) (return address)
976		0x40, 0xe7, // move sr,-(sp) (saved SR)
#	Line 1155 \| Line 978 \| void sheepshaver_cpu::handle_interrupt(v
978		0x4e, 0xd0, // jmp (a0)
979		M68K_RTS >> 8, M68K_RTS & 0xff // @1
980		};
981	<	Execute68k((uint32)proc, &r);
981	>	BUILD_SHEEPSHAVER_PROCEDURE(proc);
982	>	Execute68k(proc, &r);
983		WriteMacInt32(XLM_68K_R25, old_r25); // Restore interrupt level
984		#else
985		// Only update cursor
#	Line 1167 \| Line 991 \| void sheepshaver_cpu::handle_interrupt(v
991		}
992		}
993		#endif
994	+	#if EMUL_TIME_STATS
995	+	interrupt_time += (clock() - interrupt_start);
996	+	#endif
997		}
998		break;
999		#endif
1000		}
1001		}
1002
1176	–	static void get_resource(void);
1177	–	static void get_1_resource(void);
1178	–	static void get_ind_resource(void);
1179	–	static void get_1_ind_resource(void);
1180	–	static void r_get_resource(void);
1181	–
1003		// Execute NATIVE_OP routine
1004		void sheepshaver_cpu::execute_native_op(uint32 selector)
1005		{
#	Line 1198 \| Line 1019 \| void sheepshaver_cpu::execute_native_op(
1019		VideoVBL();
1020		break;
1021		case NATIVE_VIDEO_DO_DRIVER_IO:
1022	<	gpr(3) = (int32)(int16)VideoDoDriverIO((void )gpr(3), (void )gpr(4),
1023	<	(void *)gpr(5), gpr(6), gpr(7));
1022	>	gpr(3) = (int32)(int16)VideoDoDriverIO(gpr(3), gpr(4), gpr(5), gpr(6), gpr(7));
1023	>	break;
1024	>	case NATIVE_ETHER_AO_GET_HWADDR:
1025	>	AO_get_ethernet_address(gpr(3));
1026	>	break;
1027	>	case NATIVE_ETHER_AO_ADD_MULTI:
1028	>	AO_enable_multicast(gpr(3));
1029	>	break;
1030	>	case NATIVE_ETHER_AO_DEL_MULTI:
1031	>	AO_disable_multicast(gpr(3));
1032	>	break;
1033	>	case NATIVE_ETHER_AO_SEND_PACKET:
1034	>	AO_transmit_packet(gpr(3));
1035		break;
1204	–	#ifdef WORDS_BIGENDIAN
1036		case NATIVE_ETHER_IRQ:
1037		EtherIRQ();
1038		break;
#	Line 1223 \| Line 1054 \| void sheepshaver_cpu::execute_native_op(
1054		case NATIVE_ETHER_RSRV:
1055		gpr(3) = ether_rsrv((queue_t *)gpr(3));
1056		break;
1057	<	#else
1227	<	case NATIVE_ETHER_INIT:
1228	<	// FIXME: needs more complicated thunks
1229	<	gpr(3) = false;
1230	<	break;
1231	<	#endif
1232	<	case NATIVE_SYNC_HOOK:
1057	>	case NATIVE_NQD_SYNC_HOOK:
1058		gpr(3) = NQD_sync_hook(gpr(3));
1059		break;
1060	<	case NATIVE_BITBLT_HOOK:
1060	>	case NATIVE_NQD_UNKNOWN_HOOK:
1061	>	gpr(3) = NQD_unknown_hook(gpr(3));
1062	>	break;
1063	>	case NATIVE_NQD_BITBLT_HOOK:
1064		gpr(3) = NQD_bitblt_hook(gpr(3));
1065		break;
1066	<	case NATIVE_BITBLT:
1066	>	case NATIVE_NQD_BITBLT:
1067		NQD_bitblt(gpr(3));
1068		break;
1069	<	case NATIVE_FILLRECT_HOOK:
1069	>	case NATIVE_NQD_FILLRECT_HOOK:
1070		gpr(3) = NQD_fillrect_hook(gpr(3));
1071		break;
1072	<	case NATIVE_INVRECT:
1072	>	case NATIVE_NQD_INVRECT:
1073		NQD_invrect(gpr(3));
1074		break;
1075	<	case NATIVE_FILLRECT:
1075	>	case NATIVE_NQD_FILLRECT:
1076		NQD_fillrect(gpr(3));
1077		break;
1078		case NATIVE_SERIAL_NOTHING:
#	Line 1268 \| Line 1096 \| void sheepshaver_cpu::execute_native_op(
1096		break;
1097		}
1098		case NATIVE_GET_RESOURCE:
1099	+	get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1100	+	break;
1101		case NATIVE_GET_1_RESOURCE:
1102	+	get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1103	+	break;
1104		case NATIVE_GET_IND_RESOURCE:
1105	<	case NATIVE_GET_1_IND_RESOURCE:
1274	<	case NATIVE_R_GET_RESOURCE: {
1275	<	typedef void (*GetResourceCallback)(void);
1276	<	static const GetResourceCallback get_resource_callbacks[] = {
1277	<	::get_resource,
1278	<	::get_1_resource,
1279	<	::get_ind_resource,
1280	<	::get_1_ind_resource,
1281	<	::r_get_resource
1282	<	};
1283	<	get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1105	>	get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1106		break;
1107	<	}
1108	<	case NATIVE_DISABLE_INTERRUPT:
1287	<	DisableInterrupt();
1107	>	case NATIVE_GET_1_IND_RESOURCE:
1108	>	get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1109		break;
1110	<	case NATIVE_ENABLE_INTERRUPT:
1111	<	EnableInterrupt();
1110	>	case NATIVE_R_GET_RESOURCE:
1111	>	get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1112		break;
1113		case NATIVE_MAKE_EXECUTABLE:
1114	<	MakeExecutable(0, (void *)gpr(4), gpr(5));
1114	>	MakeExecutable(0, gpr(4), gpr(5));
1115		break;
1116		case NATIVE_CHECK_LOAD_INVOC:
1117		check_load_invoc(gpr(3), gpr(4), gpr(5));
1118		break;
1119	+	case NATIVE_NAMED_CHECK_LOAD_INVOC:
1120	+	named_check_load_invoc(gpr(3), gpr(4), gpr(5));
1121	+	break;
1122		default:
1123		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
1124		QuitEmulator();
#	Line 1314 \| Line 1138 \| void sheepshaver_cpu::execute_native_op(
1138
1139		void Execute68k(uint32 pc, M68kRegisters *r)
1140		{
1141	<	current_cpu->execute_68k(pc, r);
1141	>	ppc_cpu->execute_68k(pc, r);
1142		}
1143
1144		/*
#	Line 1337 \| Line 1161 \| void Execute68kTrap(uint16 trap, M68kReg
1161
1162		uint32 call_macos(uint32 tvect)
1163		{
1164	<	return current_cpu->execute_macos_code(tvect, 0, NULL);
1164	>	return ppc_cpu->execute_macos_code(tvect, 0, NULL);
1165		}
1166
1167		uint32 call_macos1(uint32 tvect, uint32 arg1)
1168		{
1169		const uint32 args[] = { arg1 };
1170	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1170	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1171		}
1172
1173		uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2)
1174		{
1175		const uint32 args[] = { arg1, arg2 };
1176	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1176	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1177		}
1178
1179		uint32 call_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3)
1180		{
1181		const uint32 args[] = { arg1, arg2, arg3 };
1182	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1182	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1183		}
1184
1185		uint32 call_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4)
1186		{
1187		const uint32 args[] = { arg1, arg2, arg3, arg4 };
1188	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1188	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1189		}
1190
1191		uint32 call_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5)
1192		{
1193		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5 };
1194	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1194	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1195		}
1196
1197		uint32 call_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6)
1198		{
1199		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6 };
1200	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1200	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1201		}
1202
1203		uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7)
1204		{
1205		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 };
1206	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1383	<	}
1384	<
1385	<	/*
1386	<	* Resource Manager thunks
1387	<	*/
1388	<
1389	<	void get_resource(void)
1390	<	{
1391	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1392	<	}
1393	<
1394	<	void get_1_resource(void)
1395	<	{
1396	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1397	<	}
1398	<
1399	<	void get_ind_resource(void)
1400	<	{
1401	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1402	<	}
1403	<
1404	<	void get_1_ind_resource(void)
1405	<	{
1406	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1407	<	}
1408	<
1409	<	void r_get_resource(void)
1410	<	{
1411	<	current_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1206	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1207		}

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+Removed lines
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+Added lines
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+Changed lines
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Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents): Revision 1.39 by gbeauche, 2004-05-20T11:05:30Z vs. Revision 1.75 by gbeauche, 2008-01-01T09:47:39Z

Diff Legend

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.39 by gbeauche, 2004-05-20T11:05:30Z vs.
Revision 1.75 by gbeauche, 2008-01-01T09:47:39Z