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

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.7 by gbeauche, 2003-10-12T05:44:15Z vs.
Revision 1.28 by gbeauche, 2004-02-16T15:34:55Z

#	Line 1 | Line 1
1		/*
2		*  sheepshaver_glue.cpp - Glue Kheperix CPU to SheepShaver CPU engine interface
3		*
4	<	*  SheepShaver (C) 1997-2002 Christian Bauer and Marc Hellwig
4	>	*  SheepShaver (C) 1997-2004 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 28 | Line 28
28		#include "macos_util.h"
29		#include "block-alloc.hpp"
30		#include "sigsegv.h"
31	–	#include "spcflags.h"
31		#include "cpu/ppc/ppc-cpu.hpp"
32		#include "cpu/ppc/ppc-operations.hpp"
33	+	#include "cpu/ppc/ppc-instructions.hpp"
34	+	#include "thunks.h"
35
36		// Used for NativeOp trampolines
37		#include "video.h"
38		#include "name_registry.h"
39		#include "serial.h"
40	+	#include "ether.h"
41
42		#include <stdio.h>
43
#	Line 44 | Line 46
46		#include "mon_disass.h"
47		#endif
48
49	<	#define DEBUG 1
49	>	#define DEBUG 0
50		#include "debug.h"
51
52	+	// Emulation time statistics
53	+	#define EMUL_TIME_STATS 1
54	+
55	+	#if EMUL_TIME_STATS
56	+	static clock_t emul_start_time;
57	+	static uint32 interrupt_count = 0;
58	+	static clock_t interrupt_time = 0;
59	+	static uint32 exec68k_count = 0;
60	+	static clock_t exec68k_time = 0;
61	+	static uint32 native_exec_count = 0;
62	+	static clock_t native_exec_time = 0;
63	+	static uint32 macos_exec_count = 0;
64	+	static clock_t macos_exec_time = 0;
65	+	#endif
66	+
67		static void enter_mon(void)
68		{
69		// Start up mon in real-mode
#	Line 56 | Line 73 | static void enter_mon(void)
73		#endif
74		}
75
76	+	// From main_*.cpp
77	+	extern uintptr SignalStackBase();
78	+
79	+	// From rsrc_patches.cpp
80	+	extern "C" void check_load_invoc(uint32 type, int16 id, uint32 h);
81	+
82	+	// PowerPC EmulOp to exit from emulation looop
83	+	const uint32 POWERPC_EXEC_RETURN = POWERPC_EMUL_OP | 1;
84	+
85		// Enable multicore (main/interrupts) cpu emulation?
86	<	#define MULTICORE_CPU 0
86	>	#define MULTICORE_CPU (ASYNC_IRQ ? 1 : 0)
87
88		// Enable Execute68k() safety checks?
89		#define SAFE_EXEC_68K 1
#	Line 74 | Line 100 | static void enter_mon(void)
100		// Pointer to Kernel Data
101		static KernelData * const kernel_data = (KernelData *)KERNEL_DATA_BASE;
102
103	+	// SIGSEGV handler
104	+	static sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
105	+
106	+	// JIT Compiler enabled?
107	+	static inline bool enable_jit_p()
108	+	{
109	+	return PrefsFindBool("jit");
110	+	}
111	+
112
113		/**
114		*              PowerPC emulator glue with special 'sheep' opcodes
115		**/
116
117	<	struct sheepshaver_exec_return { };
117	>	enum {
118	>	PPC_I(SHEEP) = PPC_I(MAX),
119	>	PPC_I(SHEEP_MAX)
120	>	};
121
122		class sheepshaver_cpu
123		: public powerpc_cpu
#	Line 89 | Line 127 | class sheepshaver_cpu
127
128		public:
129
130	<	sheepshaver_cpu()
131	<	: powerpc_cpu()
94	<	{ init_decoder(); }
130	>	// Constructor
131	>	sheepshaver_cpu();
132
133	<	// Condition Register accessors
133	>	// CR & XER accessors
134		uint32 get_cr() const           { return cr().get(); }
135		void set_cr(uint32 v)           { cr().set(v); }
136	+	uint32 get_xer() const          { return xer().get(); }
137	+	void set_xer(uint32 v)          { xer().set(v); }
138
139	<	// Execution loop
140	<	void execute(uint32 pc);
139	>	// Execute EMUL_OP routine
140	>	void execute_emul_op(uint32 emul_op);
141
142		// Execute 68k routine
143		void execute_68k(uint32 entry, M68kRegisters *r);
#	Line 109 | Line 148 | public:
148		// Execute MacOS/PPC code
149		uint32 execute_macos_code(uint32 tvect, int nargs, uint32 const *args);
150
151	+	// Compile one instruction
152	+	virtual bool compile1(codegen_context_t & cg_context);
153	+
154		// Resource manager thunk
155		void get_resource(uint32 old_get_resource);
156
157		// Handle MacOS interrupt
158		void interrupt(uint32 entry);
159	<
118	<	// spcflags for interrupts handling
119	<	static uint32 spcflags;
159	>	void handle_interrupt();
160
161		// Lazy memory allocator (one item at a time)
162		void *operator new(size_t size)
#	Line 126 | Line 166 | public:
166		// FIXME: really make surre array allocation fail at link time?
167		void *operator new[](size_t);
168		void operator delete[](void *p);
169	+
170	+	// Make sure the SIGSEGV handler can access CPU registers
171	+	friend sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
172		};
173
174	<	uint32 sheepshaver_cpu::spcflags = 0;
175	<	lazy_allocator< sheepshaver_cpu > allocator_helper< sheepshaver_cpu, lazy_allocator >::allocator;
174	>	// FIXME: this specialization doesn't work with GCC
175	>	// template<> lazy_allocator< sheepshaver_cpu > allocator_helper< sheepshaver_cpu, lazy_allocator >::allocator;
176	>	template< class data_type, template< class > class allocator_type >
177	>	allocator_type< data_type > allocator_helper< data_type, allocator_type >::allocator;
178
179	<	void sheepshaver_cpu::init_decoder()
179	>	sheepshaver_cpu::sheepshaver_cpu()
180	>	: powerpc_cpu(enable_jit_p())
181		{
182	<	#ifndef PPC_NO_STATIC_II_INDEX_TABLE
183	<	static bool initialized = false;
138	<	if (initialized)
139	<	return;
140	<	initialized = true;
141	<	#endif
182	>	init_decoder();
183	>	}
184
185	+	void sheepshaver_cpu::init_decoder()
186	+	{
187		static const instr_info_t sheep_ii_table[] = {
188		{ "sheep",
189	<	(execute_fn)&sheepshaver_cpu::execute_sheep,
189	>	(execute_pmf)&sheepshaver_cpu::execute_sheep,
190		NULL,
191	+	PPC_I(SHEEP),
192		D_form, 6, 0, CFLOW_JUMP | CFLOW_TRAP
193		}
194		};
#	Line 171 | Line 216 | typedef bit_field< 20, 20 > FN_field;
216		typedef bit_field< 21, 25 > NATIVE_OP_field;
217		typedef bit_field< 26, 31 > EMUL_OP_field;
218
219	+	// Execute EMUL_OP routine
220	+	void sheepshaver_cpu::execute_emul_op(uint32 emul_op)
221	+	{
222	+	M68kRegisters r68;
223	+	WriteMacInt32(XLM_68K_R25, gpr(25));
224	+	WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
225	+	for (int i = 0; i < 8; i++)
226	+	r68.d[i] = gpr(8 + i);
227	+	for (int i = 0; i < 7; i++)
228	+	r68.a[i] = gpr(16 + i);
229	+	r68.a[7] = gpr(1);
230	+	uint32 saved_cr = get_cr() & CR_field<2>::mask();
231	+	uint32 saved_xer = get_xer();
232	+	EmulOp(&r68, gpr(24), emul_op);
233	+	set_cr(saved_cr);
234	+	set_xer(saved_xer);
235	+	for (int i = 0; i < 8; i++)
236	+	gpr(8 + i) = r68.d[i];
237	+	for (int i = 0; i < 7; i++)
238	+	gpr(16 + i) = r68.a[i];
239	+	gpr(1) = r68.a[7];
240	+	WriteMacInt32(XLM_RUN_MODE, MODE_68K);
241	+	}
242	+
243		// Execute SheepShaver instruction
244		void sheepshaver_cpu::execute_sheep(uint32 opcode)
245		{
#	Line 181 | Line 250 | void sheepshaver_cpu::execute_sheep(uint
250		case 0:         // EMUL_RETURN
251		QuitEmulator();
252		break;
253	<
253	>
254		case 1:         // EXEC_RETURN
255	<	throw sheepshaver_exec_return();
255	>	spcflags().set(SPCFLAG_CPU_EXEC_RETURN);
256		break;
257
258		case 2:         // EXEC_NATIVE
#	Line 194 | Line 263 | void sheepshaver_cpu::execute_sheep(uint
263		pc() += 4;
264		break;
265
266	<	default: {      // EMUL_OP
267	<	M68kRegisters r68;
199	<	WriteMacInt32(XLM_68K_R25, gpr(25));
200	<	WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
201	<	for (int i = 0; i < 8; i++)
202	<	r68.d[i] = gpr(8 + i);
203	<	for (int i = 0; i < 7; i++)
204	<	r68.a[i] = gpr(16 + i);
205	<	r68.a[7] = gpr(1);
206	<	EmulOp(&r68, gpr(24), EMUL_OP_field::extract(opcode) - 3);
207	<	for (int i = 0; i < 8; i++)
208	<	gpr(8 + i) = r68.d[i];
209	<	for (int i = 0; i < 7; i++)
210	<	gpr(16 + i) = r68.a[i];
211	<	gpr(1) = r68.a[7];
212	<	WriteMacInt32(XLM_RUN_MODE, MODE_68K);
266	>	default:        // EMUL_OP
267	>	execute_emul_op(EMUL_OP_field::extract(opcode) - 3);
268		pc() += 4;
269		break;
270		}
216	–	}
271		}
272
273	<	// Checks for pending interrupts
274	<	struct execute_nothing {
275	<	static inline void execute(powerpc_cpu *) { }
276	<	};
273	>	// Compile one instruction
274	>	bool sheepshaver_cpu::compile1(codegen_context_t & cg_context)
275	>	{
276	>	#if PPC_ENABLE_JIT
277	>	const instr_info_t *ii = cg_context.instr_info;
278	>	if (ii->mnemo != PPC_I(SHEEP))
279	>	return false;
280	>
281	>	bool compiled = false;
282	>	powerpc_dyngen & dg = cg_context.codegen;
283	>	uint32 opcode = cg_context.opcode;
284
285	<	struct execute_spcflags_check {
286	<	static inline void execute(powerpc_cpu *cpu) {
287	<	#if !ASYNC_IRQ
288	<	if (SPCFLAGS_TEST(SPCFLAG_ALL_BUT_EXEC_RETURN)) {
289	<	if (SPCFLAGS_TEST( SPCFLAG_ENTER_MON )) {
290	<	SPCFLAGS_CLEAR( SPCFLAG_ENTER_MON );
291	<	enter_mon();
292	<	}
293	<	if (SPCFLAGS_TEST( SPCFLAG_DOINT )) {
294	<	SPCFLAGS_CLEAR( SPCFLAG_DOINT );
295	<	HandleInterrupt();
296	<	}
297	<	if (SPCFLAGS_TEST( SPCFLAG_INT )) {
298	<	SPCFLAGS_CLEAR( SPCFLAG_INT );
299	<	SPCFLAGS_SET( SPCFLAG_DOINT );
285	>	switch (opcode & 0x3f) {
286	>	case 0:         // EMUL_RETURN
287	>	dg.gen_invoke(QuitEmulator);
288	>	compiled = true;
289	>	break;
290	>
291	>	case 1:         // EXEC_RETURN
292	>	dg.gen_spcflags_set(SPCFLAG_CPU_EXEC_RETURN);
293	>	compiled = true;
294	>	break;
295	>
296	>	case 2: {       // EXEC_NATIVE
297	>	uint32 selector = NATIVE_OP_field::extract(opcode);
298	>	switch (selector) {
299	>	case NATIVE_PATCH_NAME_REGISTRY:
300	>	dg.gen_invoke(DoPatchNameRegistry);
301	>	compiled = true;
302	>	break;
303	>	case NATIVE_VIDEO_INSTALL_ACCEL:
304	>	dg.gen_invoke(VideoInstallAccel);
305	>	compiled = true;
306	>	break;
307	>	case NATIVE_VIDEO_VBL:
308	>	dg.gen_invoke(VideoVBL);
309	>	compiled = true;
310	>	break;
311	>	case NATIVE_GET_RESOURCE:
312	>	case NATIVE_GET_1_RESOURCE:
313	>	case NATIVE_GET_IND_RESOURCE:
314	>	case NATIVE_GET_1_IND_RESOURCE:
315	>	case NATIVE_R_GET_RESOURCE: {
316	>	static const uint32 get_resource_ptr[] = {
317	>	XLM_GET_RESOURCE,
318	>	XLM_GET_1_RESOURCE,
319	>	XLM_GET_IND_RESOURCE,
320	>	XLM_GET_1_IND_RESOURCE,
321	>	XLM_R_GET_RESOURCE
322	>	};
323	>	uint32 old_get_resource = ReadMacInt32(get_resource_ptr[selector - NATIVE_GET_RESOURCE]);
324	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
325	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::get_resource).ptr();
326	>	dg.gen_invoke_CPU_im(func, old_get_resource);
327	>	compiled = true;
328	>	break;
329	>	}
330	>	case NATIVE_DISABLE_INTERRUPT:
331	>	dg.gen_invoke(DisableInterrupt);
332	>	compiled = true;
333	>	break;
334	>	case NATIVE_ENABLE_INTERRUPT:
335	>	dg.gen_invoke(EnableInterrupt);
336	>	compiled = true;
337	>	break;
338	>	case NATIVE_CHECK_LOAD_INVOC:
339	>	dg.gen_load_T0_GPR(3);
340	>	dg.gen_load_T1_GPR(4);
341	>	dg.gen_se_16_32_T1();
342	>	dg.gen_load_T2_GPR(5);
343	>	dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc);
344	>	compiled = true;
345	>	break;
346	>	}
347	>	if (FN_field::test(opcode)) {
348	>	if (compiled) {
349	>	dg.gen_load_A0_LR();
350	>	dg.gen_set_PC_A0();
351		}
352	+	cg_context.done_compile = true;
353		}
354	<	#endif
354	>	else
355	>	cg_context.done_compile = false;
356	>	break;
357		}
243	–	};
358
359	<	// Execution loop
360	<	void sheepshaver_cpu::execute(uint32 entry)
361	<	{
362	<	try {
363	<	pc() = entry;
364	<	powerpc_cpu::do_execute<execute_nothing, execute_spcflags_check>();
365	<	}
252	<	catch (sheepshaver_exec_return const &) {
253	<	// Nothing, simply return
359	>	default: {      // EMUL_OP
360	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
361	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
362	>	dg.gen_invoke_CPU_im(func, EMUL_OP_field::extract(opcode) - 3);
363	>	cg_context.done_compile = false;
364	>	compiled = true;
365	>	break;
366		}
255	–	catch (...) {
256	–	printf("ERROR: execute() received an unknown exception!\n");
257	–	QuitEmulator();
367		}
368	+	return compiled;
369	+	#endif
370	+	return false;
371		}
372
373		// Handle MacOS interrupt
374		void sheepshaver_cpu::interrupt(uint32 entry)
375		{
376	+	#if EMUL_TIME_STATS
377	+	interrupt_count++;
378	+	const clock_t interrupt_start = clock();
379	+	#endif
380	+
381		#if !MULTICORE_CPU
382		// Save program counters and branch registers
383		uint32 saved_pc = pc();
#	Line 270 | Line 387 | void sheepshaver_cpu::interrupt(uint32 e
387		#endif
388
389		// Initialize stack pointer to SheepShaver alternate stack base
390	<	gpr(1) = SheepStack1Base - 64;
390	>	gpr(1) = SignalStackBase() - 64;
391
392		// Build trampoline to return from interrupt
393	<	uint32 trampoline[] = { htonl(POWERPC_EMUL_OP | 1) };
393	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
394
395		// Prepare registers for nanokernel interrupt routine
396		kernel_data->v[0x004 >> 2] = htonl(gpr(1));
#	Line 292 | Line 409 | void sheepshaver_cpu::interrupt(uint32 e
409		gpr(1)  = KernelDataAddr;
410		gpr(7)  = ntohl(kernel_data->v[0x660 >> 2]);
411		gpr(8)  = 0;
412	<	gpr(10) = (uint32)trampoline;
413	<	gpr(12) = (uint32)trampoline;
414	<	gpr(13) = cr().get();
412	>	gpr(10) = trampoline.addr();
413	>	gpr(12) = trampoline.addr();
414	>	gpr(13) = get_cr();
415
416		// rlwimi. r7,r7,8,0,0
417		uint32 result = op_ppc_rlwimi::apply(gpr(7), 8, 0x80000000, gpr(7));
#	Line 302 | Line 419 | void sheepshaver_cpu::interrupt(uint32 e
419		gpr(7) = result;
420
421		gpr(11) = 0xf072; // MSR (SRR1)
422	<	cr().set((gpr(11) & 0x0fff0000) | (cr().get() & ~0x0fff0000));
422	>	cr().set((gpr(11) & 0x0fff0000) | (get_cr() & ~0x0fff0000));
423
424		// Enter nanokernel
425		execute(entry);
#	Line 314 | Line 431 | void sheepshaver_cpu::interrupt(uint32 e
431		ctr()= saved_ctr;
432		gpr(1) = saved_sp;
433		#endif
434	+
435	+	#if EMUL_TIME_STATS
436	+	interrupt_time += (clock() - interrupt_start);
437	+	#endif
438		}
439
440		// Execute 68k routine
441		void sheepshaver_cpu::execute_68k(uint32 entry, M68kRegisters *r)
442		{
443	+	#if EMUL_TIME_STATS
444	+	exec68k_count++;
445	+	const clock_t exec68k_start = clock();
446	+	#endif
447	+
448		#if SAFE_EXEC_68K
449		if (ReadMacInt32(XLM_RUN_MODE) != MODE_EMUL_OP)
450		printf("FATAL: Execute68k() not called from EMUL_OP mode\n");
#	Line 328 | Line 454 | void sheepshaver_cpu::execute_68k(uint32
454		uint32 saved_pc = pc();
455		uint32 saved_lr = lr();
456		uint32 saved_ctr= ctr();
457	+	uint32 saved_cr = get_cr();
458
459		// Create MacOS stack frame
460		// FIXME: make sure MacOS doesn't expect PPC registers to live on top
#	Line 399 | Line 526 | void sheepshaver_cpu::execute_68k(uint32
526		pc() = saved_pc;
527		lr() = saved_lr;
528		ctr()= saved_ctr;
529	+	set_cr(saved_cr);
530	+
531	+	#if EMUL_TIME_STATS
532	+	exec68k_time += (clock() - exec68k_start);
533	+	#endif
534		}
535
536		// Call MacOS PPC code
537		uint32 sheepshaver_cpu::execute_macos_code(uint32 tvect, int nargs, uint32 const *args)
538		{
539	+	#if EMUL_TIME_STATS
540	+	macos_exec_count++;
541	+	const clock_t macos_exec_start = clock();
542	+	#endif
543	+
544		// Save program counters and branch registers
545		uint32 saved_pc = pc();
546		uint32 saved_lr = lr();
547		uint32 saved_ctr= ctr();
548
549		// Build trampoline with EXEC_RETURN
550	<	uint32 trampoline[] = { htonl(POWERPC_EMUL_OP | 1) };
551	<	lr() = (uint32)trampoline;
550	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
551	>	lr() = trampoline.addr();
552
553		gpr(1) -= 64;                                                           // Create stack frame
554		uint32 proc = ReadMacInt32(tvect);                      // Get routine address
#	Line 442 | Line 579 | uint32 sheepshaver_cpu::execute_macos_co
579		lr() = saved_lr;
580		ctr()= saved_ctr;
581
582	+	#if EMUL_TIME_STATS
583	+	macos_exec_time += (clock() - macos_exec_start);
584	+	#endif
585	+
586		return retval;
587		}
588
#	Line 451 | Line 592 | inline void sheepshaver_cpu::execute_ppc
592		// Save branch registers
593		uint32 saved_lr = lr();
594
595	<	const uint32 trampoline[] = { htonl(POWERPC_EMUL_OP | 1) };
596	<	lr() = (uint32)trampoline;
595	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
596	>	WriteMacInt32(trampoline.addr(), POWERPC_EXEC_RETURN);
597	>	lr() = trampoline.addr();
598
599		execute(entry);
600
#	Line 461 | Line 603 | inline void sheepshaver_cpu::execute_ppc
603		}
604
605		// Resource Manager thunk
464	–	extern "C" void check_load_invoc(uint32 type, int16 id, uint32 h);
465	–
606		inline void sheepshaver_cpu::get_resource(uint32 old_get_resource)
607		{
608		uint32 type = gpr(3);
#	Line 546 | Line 686 | static sigsegv_return_t sigsegv_handler(
686		if ((addr - ROM_BASE) < ROM_SIZE)
687		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
688
689	<	// Ignore all other faults, if requested
690	<	if (PrefsFindBool("ignoresegv"))
691	<	return SIGSEGV_RETURN_FAILURE;
689	>	// Get program counter of target CPU
690	>	sheepshaver_cpu * const cpu = current_cpu;
691	>	const uint32 pc = cpu->pc();
692	>
693	>	// Fault in Mac ROM or RAM?
694	>	bool mac_fault = (pc >= ROM_BASE) && (pc < (ROM_BASE + ROM_AREA_SIZE)) || (pc >= RAMBase) && (pc < (RAMBase + RAMSize));
695	>	if (mac_fault) {
696	>
697	>	// "VM settings" during MacOS 8 installation
698	>	if (pc == ROM_BASE + 0x488160 && cpu->gpr(20) == 0xf8000000)
699	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
700	>
701	>	// MacOS 8.5 installation
702	>	else if (pc == ROM_BASE + 0x488140 && cpu->gpr(16) == 0xf8000000)
703	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
704	>
705	>	// MacOS 8 serial drivers on startup
706	>	else if (pc == ROM_BASE + 0x48e080 && (cpu->gpr(8) == 0xf3012002 || cpu->gpr(8) == 0xf3012000))
707	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
708	>
709	>	// MacOS 8.1 serial drivers on startup
710	>	else if (pc == ROM_BASE + 0x48c5e0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
711	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
712	>	else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
713	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
714	>
715	>	// Ignore all other faults, if requested
716	>	if (PrefsFindBool("ignoresegv"))
717	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
718	>	}
719		#else
720		#error "FIXME: You don't have the capability to skip instruction within signal handlers"
721		#endif
#	Line 570 | Line 737 | void init_emul_ppc(void)
737		// Initialize main CPU emulator
738		main_cpu = new sheepshaver_cpu();
739		main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
740	+	main_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
741		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
742
743		#if MULTICORE_CPU
#	Line 585 | Line 753 | void init_emul_ppc(void)
753		mon_add_command("regs", dump_registers, "regs                     Dump PowerPC registers\n");
754		mon_add_command("log", dump_log, "log                      Dump PowerPC emulation log\n");
755		#endif
756	+
757	+	#if EMUL_TIME_STATS
758	+	emul_start_time = clock();
759	+	#endif
760	+	}
761	+
762	+	/*
763	+	*  Deinitialize emulation
764	+	*/
765	+
766	+	void exit_emul_ppc(void)
767	+	{
768	+	#if EMUL_TIME_STATS
769	+	clock_t emul_end_time = clock();
770	+
771	+	printf("### Statistics for SheepShaver emulation parts\n");
772	+	const clock_t emul_time = emul_end_time - emul_start_time;
773	+	printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
774	+	printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
775	+	(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
776	+
777	+	#define PRINT_STATS(LABEL, VAR_PREFIX) do {                                                             \
778	+	printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count);             \
779	+	printf("Total " LABEL " time  : %.1f sec (%.1f%%)\n",                   \
780	+	double(VAR_PREFIX##_time) / double(CLOCKS_PER_SEC),          \
781	+	100.0 * double(VAR_PREFIX##_time) / double(emul_time));      \
782	+	} while (0)
783	+
784	+	PRINT_STATS("Execute68k[Trap] execution", exec68k);
785	+	PRINT_STATS("NativeOp execution", native_exec);
786	+	PRINT_STATS("MacOS routine execution", macos_exec);
787	+
788	+	#undef PRINT_STATS
789	+	printf("\n");
790	+	#endif
791	+
792	+	delete main_cpu;
793	+	#if MULTICORE_CPU
794	+	delete interrupt_cpu;
795	+	#endif
796		}
797
798		/*
#	Line 594 | Line 802 | void init_emul_ppc(void)
802		void emul_ppc(uint32 entry)
803		{
804		current_cpu = main_cpu;
805	+	#if 0
806		current_cpu->start_log();
807	+	#endif
808	+	// start emulation loop and enable code translation or caching
809		current_cpu->execute(entry);
810		}
811
#	Line 602 | Line 813 | void emul_ppc(uint32 entry)
813		*  Handle PowerPC interrupt
814		*/
815
816	<	// Atomic operations
817	<	extern int atomic_add(int *var, int v);
818	<	extern int atomic_and(int *var, int v);
819	<	extern int atomic_or(int *var, int v);
820	<
821	<	#if !ASYNC_IRQ
816	>	#if ASYNC_IRQ
817	>	void HandleInterrupt(void)
818	>	{
819	>	main_cpu->handle_interrupt();
820	>	}
821	>	#else
822		void TriggerInterrupt(void)
823		{
824		#if 0
825		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
826		#else
827	<	SPCFLAGS_SET( SPCFLAG_INT );
827	>	// Trigger interrupt to main cpu only
828	>	if (main_cpu)
829	>	main_cpu->trigger_interrupt();
830		#endif
831		}
832		#endif
833
834	<	void HandleInterrupt(void)
834	>	void sheepshaver_cpu::handle_interrupt(void)
835		{
836		// Do nothing if interrupts are disabled
837	<	if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
837	>	if (*(int32 *)XLM_IRQ_NEST > 0)
838		return;
839
840		// Do nothing if there is no interrupt pending
#	Line 637 | Line 850 | void HandleInterrupt(void)
850		// 68k emulator active, trigger 68k interrupt level 1
851		assert(current_cpu == main_cpu);
852		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
853	<	main_cpu->set_cr(main_cpu->get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
853	>	set_cr(get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
854		break;
855
856		#if INTERRUPTS_IN_NATIVE_MODE
857		case MODE_NATIVE:
858		// 68k emulator inactive, in nanokernel?
859		assert(current_cpu == main_cpu);
860	<	if (main_cpu->gpr(1) != KernelDataAddr) {
860	>	if (gpr(1) != KernelDataAddr) {
861		// Prepare for 68k interrupt level 1
862		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
863		WriteMacInt32(tswap32(kernel_data->v[0x658 >> 2]) + 0xdc,
#	Line 688 | Line 901 | void HandleInterrupt(void)
901		if (InterruptFlags & INTFLAG_VIA) {
902		ClearInterruptFlag(INTFLAG_VIA);
903		ADBInterrupt();
904	<	ExecutePPC(VideoVBL);
904	>	ExecuteNative(NATIVE_VIDEO_VBL);
905		}
906		}
907		#endif
#	Line 698 | Line 911 | void HandleInterrupt(void)
911		}
912		}
913
701	–	/*
702	–	*  Execute NATIVE_OP opcode (called by PowerPC emulator)
703	–	*/
704	–
705	–	#define POWERPC_NATIVE_OP_INIT(LR, OP) \
706	–	tswap32(POWERPC_EMUL_OP | ((LR) << 11) | (((uint32)OP) << 6) | 2)
707	–
708	–	// FIXME: Make sure 32-bit relocations are used
709	–	const uint32 NativeOpTable[NATIVE_OP_MAX] = {
710	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_PATCH_NAME_REGISTRY),
711	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_INSTALL_ACCEL),
712	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_VBL),
713	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_DO_DRIVER_IO),
714	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_IRQ),
715	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_INIT),
716	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_TERM),
717	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_OPEN),
718	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_CLOSE),
719	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_WPUT),
720	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_RSRV),
721	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_NOTHING),
722	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_OPEN),
723	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_PRIME_IN),
724	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_PRIME_OUT),
725	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_CONTROL),
726	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_STATUS),
727	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_CLOSE),
728	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_RESOURCE),
729	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_1_RESOURCE),
730	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_IND_RESOURCE),
731	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_1_IND_RESOURCE),
732	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_R_GET_RESOURCE),
733	–	POWERPC_NATIVE_OP_INIT(0, NATIVE_DISABLE_INTERRUPT),
734	–	POWERPC_NATIVE_OP_INIT(0, NATIVE_ENABLE_INTERRUPT),
735	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_MAKE_EXECUTABLE),
736	–	};
737	–
914		static void get_resource(void);
915		static void get_1_resource(void);
916		static void get_ind_resource(void);
#	Line 745 | Line 921 | static void r_get_resource(void);
921
922		static void NativeOp(int selector)
923		{
924	+	#if EMUL_TIME_STATS
925	+	native_exec_count++;
926	+	const clock_t native_exec_start = clock();
927	+	#endif
928	+
929		switch (selector) {
930		case NATIVE_PATCH_NAME_REGISTRY:
931		DoPatchNameRegistry();
#	Line 759 | Line 940 | static void NativeOp(int selector)
940		GPR(3) = (int32)(int16)VideoDoDriverIO((void *)GPR(3), (void *)GPR(4),
941		(void *)GPR(5), GPR(6), GPR(7));
942		break;
943	<	case NATIVE_GET_RESOURCE:
944	<	get_resource();
943	>	#ifdef WORDS_BIGENDIAN
944	>	case NATIVE_ETHER_IRQ:
945	>	EtherIRQ();
946		break;
947	<	case NATIVE_GET_1_RESOURCE:
948	<	get_1_resource();
947	>	case NATIVE_ETHER_INIT:
948	>	GPR(3) = InitStreamModule((void *)GPR(3));
949		break;
950	<	case NATIVE_GET_IND_RESOURCE:
951	<	get_ind_resource();
950	>	case NATIVE_ETHER_TERM:
951	>	TerminateStreamModule();
952		break;
953	<	case NATIVE_GET_1_IND_RESOURCE:
954	<	get_1_ind_resource();
953	>	case NATIVE_ETHER_OPEN:
954	>	GPR(3) = ether_open((queue_t *)GPR(3), (void *)GPR(4), GPR(5), GPR(6), (void*)GPR(7));
955	>	break;
956	>	case NATIVE_ETHER_CLOSE:
957	>	GPR(3) = ether_close((queue_t *)GPR(3), GPR(4), (void *)GPR(5));
958		break;
959	<	case NATIVE_R_GET_RESOURCE:
960	<	r_get_resource();
959	>	case NATIVE_ETHER_WPUT:
960	>	GPR(3) = ether_wput((queue_t *)GPR(3), (mblk_t *)GPR(4));
961		break;
962	+	case NATIVE_ETHER_RSRV:
963	+	GPR(3) = ether_rsrv((queue_t *)GPR(3));
964	+	break;
965	+	#else
966	+	case NATIVE_ETHER_INIT:
967	+	// FIXME: needs more complicated thunks
968	+	GPR(3) = false;
969	+	break;
970	+	#endif
971		case NATIVE_SERIAL_NOTHING:
972		case NATIVE_SERIAL_OPEN:
973		case NATIVE_SERIAL_PRIME_IN:
#	Line 794 | Line 988 | static void NativeOp(int selector)
988		GPR(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](GPR(3), GPR(4));
989		break;
990		}
991	+	case NATIVE_GET_RESOURCE:
992	+	case NATIVE_GET_1_RESOURCE:
993	+	case NATIVE_GET_IND_RESOURCE:
994	+	case NATIVE_GET_1_IND_RESOURCE:
995	+	case NATIVE_R_GET_RESOURCE: {
996	+	typedef void (*GetResourceCallback)(void);
997	+	static const GetResourceCallback get_resource_callbacks[] = {
998	+	get_resource,
999	+	get_1_resource,
1000	+	get_ind_resource,
1001	+	get_1_ind_resource,
1002	+	r_get_resource
1003	+	};
1004	+	get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1005	+	break;
1006	+	}
1007		case NATIVE_DISABLE_INTERRUPT:
1008		DisableInterrupt();
1009		break;
#	Line 803 | Line 1013 | static void NativeOp(int selector)
1013		case NATIVE_MAKE_EXECUTABLE:
1014		MakeExecutable(0, (void *)GPR(4), GPR(5));
1015		break;
1016	+	case NATIVE_CHECK_LOAD_INVOC:
1017	+	check_load_invoc(GPR(3), GPR(4), GPR(5));
1018	+	break;
1019		default:
1020		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
1021		QuitEmulator();
1022		break;
1023		}
811	–	}
1024
1025	<	/*
1026	<	*  Execute native subroutine (LR must contain return address)
1027	<	*/
816	<
817	<	void ExecuteNative(int selector)
818	<	{
819	<	uint32 tvect[2];
820	<	tvect[0] = tswap32(POWERPC_NATIVE_OP_FUNC(selector));
821	<	tvect[1] = 0; // Fake TVECT
822	<	RoutineDescriptor desc = BUILD_PPC_ROUTINE_DESCRIPTOR(0, tvect);
823	<	M68kRegisters r;
824	<	Execute68k((uint32)&desc, &r);
1025	>	#if EMUL_TIME_STATS
1026	>	native_exec_time += (clock() - native_exec_start);
1027	>	#endif
1028		}
1029
1030		/*
#	Line 842 | Line 1045 | void Execute68k(uint32 pc, M68kRegisters
1045
1046		void Execute68kTrap(uint16 trap, M68kRegisters *r)
1047		{
1048	<	uint16 proc[2];
1049	<	proc[0] = htons(trap);
1050	<	proc[1] = htons(M68K_RTS);
1051	<	Execute68k((uint32)proc, r);
1048	>	SheepVar proc_var(4);
1049	>	uint32 proc = proc_var.addr();
1050	>	WriteMacInt16(proc, trap);
1051	>	WriteMacInt16(proc + 2, M68K_RTS);
1052	>	Execute68k(proc, r);
1053		}
1054
1055		/*
#	Line 900 | Line 1104 | uint32 call_macos7(uint32 tvect, uint32
1104		}
1105
1106		/*
903	–	*  Atomic operations
904	–	*/
905	–
906	–	int atomic_add(int *var, int v)
907	–	{
908	–	int ret = *var;
909	–	*var += v;
910	–	return ret;
911	–	}
912	–
913	–	int atomic_and(int *var, int v)
914	–	{
915	–	int ret = *var;
916	–	*var &= v;
917	–	return ret;
918	–	}
919	–
920	–	int atomic_or(int *var, int v)
921	–	{
922	–	int ret = *var;
923	–	*var |= v;
924	–	return ret;
925	–	}
926	–
927	–	/*
1107		*  Resource Manager thunks
1108		*/
1109

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