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

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.8 by gbeauche, 2003-10-19T21:37:43Z vs.
Revision 1.37 by gbeauche, 2004-05-15T17:26:28Z

#	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	+	#include "timer.h"
42
43		#include <stdio.h>
44	+	#include <stdlib.h>
45
46		#if ENABLE_MON
47		#include "mon.h"
48		#include "mon_disass.h"
49		#endif
50
51	<	#define DEBUG 1
51	>	#define DEBUG 0
52		#include "debug.h"
53
54	+	// Emulation time statistics
55	+	#define EMUL_TIME_STATS 1
56	+
57	+	#if EMUL_TIME_STATS
58	+	static clock_t emul_start_time;
59	+	static uint32 interrupt_count = 0;
60	+	static clock_t interrupt_time = 0;
61	+	static uint32 exec68k_count = 0;
62	+	static clock_t exec68k_time = 0;
63	+	static uint32 native_exec_count = 0;
64	+	static clock_t native_exec_time = 0;
65	+	static uint32 macos_exec_count = 0;
66	+	static clock_t macos_exec_time = 0;
67	+	#endif
68	+
69		static void enter_mon(void)
70		{
71		// Start up mon in real-mode
#	Line 56 | Line 75 | static void enter_mon(void)
75		#endif
76		}
77
78	+	// From main_*.cpp
79	+	extern uintptr SignalStackBase();
80	+
81	+	// From rsrc_patches.cpp
82	+	extern "C" void check_load_invoc(uint32 type, int16 id, uint32 h);
83	+
84	+	// PowerPC EmulOp to exit from emulation looop
85	+	const uint32 POWERPC_EXEC_RETURN = POWERPC_EMUL_OP | 1;
86	+
87		// Enable multicore (main/interrupts) cpu emulation?
88	<	#define MULTICORE_CPU 0
88	>	#define MULTICORE_CPU (ASYNC_IRQ ? 1 : 0)
89	>
90	>	// Enable interrupt routine safety checks?
91	>	#define SAFE_INTERRUPT_PPC 1
92
93		// Enable Execute68k() safety checks?
94		#define SAFE_EXEC_68K 1
#	Line 71 | Line 102 | static void enter_mon(void)
102		// Interrupts in native mode?
103		#define INTERRUPTS_IN_NATIVE_MODE 1
104
105	+	// Enable native EMUL_OPs to be run without a mode switch
106	+	#define ENABLE_NATIVE_EMUL_OP 1
107	+
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);
113	+
114	+	// JIT Compiler enabled?
115	+	static inline bool enable_jit_p()
116	+	{
117	+	return PrefsFindBool("jit");
118	+	}
119	+
120
121		/**
122		*              PowerPC emulator glue with special 'sheep' opcodes
123		**/
124
125	<	struct sheepshaver_exec_return { };
125	>	enum {
126	>	PPC_I(SHEEP) = PPC_I(MAX),
127	>	PPC_I(SHEEP_MAX)
128	>	};
129
130		class sheepshaver_cpu
131		: public powerpc_cpu
#	Line 87 | Line 133 | class sheepshaver_cpu
133		void init_decoder();
134		void execute_sheep(uint32 opcode);
135
136	+	// Filter out EMUL_OP routines that only call native code
137	+	bool filter_execute_emul_op(uint32 emul_op);
138	+
139	+	// "Native" EMUL_OP routines
140	+	void execute_emul_op_microseconds();
141	+	void execute_emul_op_idle_time_1();
142	+	void execute_emul_op_idle_time_2();
143	+
144		public:
145
146	<	sheepshaver_cpu()
147	<	: powerpc_cpu()
94	<	{ init_decoder(); }
146	>	// Constructor
147	>	sheepshaver_cpu();
148
149	<	// Condition Register accessors
149	>	// CR & XER accessors
150		uint32 get_cr() const           { return cr().get(); }
151		void set_cr(uint32 v)           { cr().set(v); }
152	+	uint32 get_xer() const          { return xer().get(); }
153	+	void set_xer(uint32 v)          { xer().set(v); }
154
155	<	// Execution loop
156	<	void execute(uint32 pc);
155	>	// Execute EMUL_OP routine
156	>	void execute_emul_op(uint32 emul_op);
157
158		// Execute 68k routine
159		void execute_68k(uint32 entry, M68kRegisters *r);
#	Line 109 | Line 164 | public:
164		// Execute MacOS/PPC code
165		uint32 execute_macos_code(uint32 tvect, int nargs, uint32 const *args);
166
167	+	// Compile one instruction
168	+	virtual bool compile1(codegen_context_t & cg_context);
169	+
170		// Resource manager thunk
171		void get_resource(uint32 old_get_resource);
172
173		// Handle MacOS interrupt
174		void interrupt(uint32 entry);
175	+	void handle_interrupt();
176
177	<	// spcflags for interrupts handling
178	<	static uint32 spcflags;
120	<
121	<	// Lazy memory allocator (one item at a time)
122	<	void *operator new(size_t size)
123	<	{ return allocator_helper< sheepshaver_cpu, lazy_allocator >::allocate(); }
124	<	void operator delete(void *p)
125	<	{ allocator_helper< sheepshaver_cpu, lazy_allocator >::deallocate(p); }
126	<	// FIXME: really make surre array allocation fail at link time?
127	<	void *operator new[](size_t);
128	<	void operator delete[](void *p);
177	>	// Make sure the SIGSEGV handler can access CPU registers
178	>	friend sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
179		};
180
181	<	uint32 sheepshaver_cpu::spcflags = 0;
182	<	lazy_allocator< sheepshaver_cpu > allocator_helper< sheepshaver_cpu, lazy_allocator >::allocator;
181	>	// Memory allocator returning areas aligned on 16-byte boundaries
182	>	void *operator new(size_t size)
183	>	{
184	>	void *p;
185
186	<	void sheepshaver_cpu::init_decoder()
186	>	#if defined(HAVE_POSIX_MEMALIGN)
187	>	if (posix_memalign(&p, 16, size) != 0)
188	>	throw std::bad_alloc();
189	>	#elif defined(HAVE_MEMALIGN)
190	>	p = memalign(16, size);
191	>	#elif defined(HAVE_VALLOC)
192	>	p = valloc(size); // page-aligned!
193	>	#else
194	>	/* XXX: handle padding ourselves */
195	>	p = malloc(size);
196	>	#endif
197	>
198	>	return p;
199	>	}
200	>
201	>	void operator delete(void *p)
202		{
203	<	#ifndef PPC_NO_STATIC_II_INDEX_TABLE
204	<	static bool initialized = false;
205	<	if (initialized)
206	<	return;
140	<	initialized = true;
203	>	#if defined(HAVE_MEMALIGN) || defined(HAVE_VALLOC)
204	>	#if defined(__GLIBC__)
205	>	// this is known to work only with GNU libc
206	>	free(p);
207		#endif
208	+	#else
209	+	free(p);
210	+	#endif
211	+	}
212
213	+	sheepshaver_cpu::sheepshaver_cpu()
214	+	: powerpc_cpu(enable_jit_p())
215	+	{
216	+	init_decoder();
217	+	}
218	+
219	+	void sheepshaver_cpu::init_decoder()
220	+	{
221		static const instr_info_t sheep_ii_table[] = {
222		{ "sheep",
223	<	(execute_fn)&sheepshaver_cpu::execute_sheep,
223	>	(execute_pmf)&sheepshaver_cpu::execute_sheep,
224		NULL,
225	+	PPC_I(SHEEP),
226		D_form, 6, 0, CFLOW_JUMP | CFLOW_TRAP
227		}
228		};
#	Line 161 | Line 240 | void sheepshaver_cpu::init_decoder()
240		static void NativeOp(int selector);
241
242		/*              NativeOp instruction format:
243	<	+------------+--------------------------+--+----------+------------+
244	<	|      6     |                          |FN|    OP    |      2     |
245	<	+------------+--------------------------+--+----------+------------+
246	<	0         5 |6                       19 20 21      25 26        31
243	>	+------------+-------------------------+--+-----------+------------+
244	>	|      6     |                         |FN|    OP     |      2     |
245	>	+------------+-------------------------+--+-----------+------------+
246	>	0         5 |6                      18 19 20      25 26        31
247		*/
248
249	<	typedef bit_field< 20, 20 > FN_field;
250	<	typedef bit_field< 21, 25 > NATIVE_OP_field;
249	>	typedef bit_field< 19, 19 > FN_field;
250	>	typedef bit_field< 20, 25 > NATIVE_OP_field;
251		typedef bit_field< 26, 31 > EMUL_OP_field;
252
253	+	// "Native" EMUL_OP routines
254	+	#define GPR_A(REG) gpr(16 + (REG))
255	+	#define GPR_D(REG) gpr( 8 + (REG))
256	+
257	+	void sheepshaver_cpu::execute_emul_op_microseconds()
258	+	{
259	+	Microseconds(GPR_A(0), GPR_D(0));
260	+	}
261	+
262	+	void sheepshaver_cpu::execute_emul_op_idle_time_1()
263	+	{
264	+	// Sleep if no events pending
265	+	if (ReadMacInt32(0x14c) == 0)
266	+	Delay_usec(16667);
267	+	GPR_A(0) = ReadMacInt32(0x2b6);
268	+	}
269	+
270	+	void sheepshaver_cpu::execute_emul_op_idle_time_2()
271	+	{
272	+	// Sleep if no events pending
273	+	if (ReadMacInt32(0x14c) == 0)
274	+	Delay_usec(16667);
275	+	GPR_D(0) = (uint32)-2;
276	+	}
277	+
278	+	// Filter out EMUL_OP routines that only call native code
279	+	bool sheepshaver_cpu::filter_execute_emul_op(uint32 emul_op)
280	+	{
281	+	switch (emul_op) {
282	+	case OP_MICROSECONDS:
283	+	execute_emul_op_microseconds();
284	+	return true;
285	+	case OP_IDLE_TIME:
286	+	execute_emul_op_idle_time_1();
287	+	return true;
288	+	case OP_IDLE_TIME_2:
289	+	execute_emul_op_idle_time_2();
290	+	return true;
291	+	}
292	+	return false;
293	+	}
294	+
295	+	// Execute EMUL_OP routine
296	+	void sheepshaver_cpu::execute_emul_op(uint32 emul_op)
297	+	{
298	+	#if ENABLE_NATIVE_EMUL_OP
299	+	// First, filter out EMUL_OPs that can be executed without a mode switch
300	+	if (filter_execute_emul_op(emul_op))
301	+	return;
302	+	#endif
303	+
304	+	M68kRegisters r68;
305	+	WriteMacInt32(XLM_68K_R25, gpr(25));
306	+	WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
307	+	for (int i = 0; i < 8; i++)
308	+	r68.d[i] = gpr(8 + i);
309	+	for (int i = 0; i < 7; i++)
310	+	r68.a[i] = gpr(16 + i);
311	+	r68.a[7] = gpr(1);
312	+	uint32 saved_cr = get_cr() & CR_field<2>::mask();
313	+	uint32 saved_xer = get_xer();
314	+	EmulOp(&r68, gpr(24), emul_op);
315	+	set_cr(saved_cr);
316	+	set_xer(saved_xer);
317	+	for (int i = 0; i < 8; i++)
318	+	gpr(8 + i) = r68.d[i];
319	+	for (int i = 0; i < 7; i++)
320	+	gpr(16 + i) = r68.a[i];
321	+	gpr(1) = r68.a[7];
322	+	WriteMacInt32(XLM_RUN_MODE, MODE_68K);
323	+	}
324	+
325		// Execute SheepShaver instruction
326		void sheepshaver_cpu::execute_sheep(uint32 opcode)
327		{
#	Line 183 | Line 334 | void sheepshaver_cpu::execute_sheep(uint
334		break;
335
336		case 1:         // EXEC_RETURN
337	<	throw sheepshaver_exec_return();
337	>	spcflags().set(SPCFLAG_CPU_EXEC_RETURN);
338		break;
339
340		case 2:         // EXEC_NATIVE
#	Line 194 | Line 345 | void sheepshaver_cpu::execute_sheep(uint
345		pc() += 4;
346		break;
347
348	<	default: {      // EMUL_OP
349	<	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);
348	>	default:        // EMUL_OP
349	>	execute_emul_op(EMUL_OP_field::extract(opcode) - 3);
350		pc() += 4;
351		break;
352		}
216	–	}
353		}
354
355	<	// Checks for pending interrupts
356	<	struct execute_nothing {
357	<	static inline void execute(powerpc_cpu *) { }
358	<	};
355	>	// Compile one instruction
356	>	bool sheepshaver_cpu::compile1(codegen_context_t & cg_context)
357	>	{
358	>	#if PPC_ENABLE_JIT
359	>	const instr_info_t *ii = cg_context.instr_info;
360	>	if (ii->mnemo != PPC_I(SHEEP))
361	>	return false;
362	>
363	>	bool compiled = false;
364	>	powerpc_dyngen & dg = cg_context.codegen;
365	>	uint32 opcode = cg_context.opcode;
366
367	<	struct execute_spcflags_check {
368	<	static inline void execute(powerpc_cpu *cpu) {
369	<	#if !ASYNC_IRQ
370	<	if (SPCFLAGS_TEST(SPCFLAG_ALL_BUT_EXEC_RETURN)) {
371	<	if (SPCFLAGS_TEST( SPCFLAG_ENTER_MON )) {
372	<	SPCFLAGS_CLEAR( SPCFLAG_ENTER_MON );
373	<	enter_mon();
374	<	}
375	<	if (SPCFLAGS_TEST( SPCFLAG_DOINT )) {
376	<	SPCFLAGS_CLEAR( SPCFLAG_DOINT );
377	<	HandleInterrupt();
378	<	}
379	<	if (SPCFLAGS_TEST( SPCFLAG_INT )) {
380	<	SPCFLAGS_CLEAR( SPCFLAG_INT );
381	<	SPCFLAGS_SET( SPCFLAG_DOINT );
367	>	switch (opcode & 0x3f) {
368	>	case 0:         // EMUL_RETURN
369	>	dg.gen_invoke(QuitEmulator);
370	>	compiled = true;
371	>	break;
372	>
373	>	case 1:         // EXEC_RETURN
374	>	dg.gen_spcflags_set(SPCFLAG_CPU_EXEC_RETURN);
375	>	compiled = true;
376	>	break;
377	>
378	>	case 2: {       // EXEC_NATIVE
379	>	uint32 selector = NATIVE_OP_field::extract(opcode);
380	>	switch (selector) {
381	>	case NATIVE_PATCH_NAME_REGISTRY:
382	>	dg.gen_invoke(DoPatchNameRegistry);
383	>	compiled = true;
384	>	break;
385	>	case NATIVE_VIDEO_INSTALL_ACCEL:
386	>	dg.gen_invoke(VideoInstallAccel);
387	>	compiled = true;
388	>	break;
389	>	case NATIVE_VIDEO_VBL:
390	>	dg.gen_invoke(VideoVBL);
391	>	compiled = true;
392	>	break;
393	>	case NATIVE_GET_RESOURCE:
394	>	case NATIVE_GET_1_RESOURCE:
395	>	case NATIVE_GET_IND_RESOURCE:
396	>	case NATIVE_GET_1_IND_RESOURCE:
397	>	case NATIVE_R_GET_RESOURCE: {
398	>	static const uint32 get_resource_ptr[] = {
399	>	XLM_GET_RESOURCE,
400	>	XLM_GET_1_RESOURCE,
401	>	XLM_GET_IND_RESOURCE,
402	>	XLM_GET_1_IND_RESOURCE,
403	>	XLM_R_GET_RESOURCE
404	>	};
405	>	uint32 old_get_resource = ReadMacInt32(get_resource_ptr[selector - NATIVE_GET_RESOURCE]);
406	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
407	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::get_resource).ptr();
408	>	dg.gen_invoke_CPU_im(func, old_get_resource);
409	>	compiled = true;
410	>	break;
411	>	}
412	>	case NATIVE_DISABLE_INTERRUPT:
413	>	dg.gen_invoke(DisableInterrupt);
414	>	compiled = true;
415	>	break;
416	>	case NATIVE_ENABLE_INTERRUPT:
417	>	dg.gen_invoke(EnableInterrupt);
418	>	compiled = true;
419	>	break;
420	>	case NATIVE_CHECK_LOAD_INVOC:
421	>	dg.gen_load_T0_GPR(3);
422	>	dg.gen_load_T1_GPR(4);
423	>	dg.gen_se_16_32_T1();
424	>	dg.gen_load_T2_GPR(5);
425	>	dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc);
426	>	compiled = true;
427	>	break;
428	>	case NATIVE_BITBLT:
429	>	dg.gen_load_T0_GPR(3);
430	>	dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt);
431	>	compiled = true;
432	>	break;
433	>	case NATIVE_INVRECT:
434	>	dg.gen_load_T0_GPR(3);
435	>	dg.gen_invoke_T0((void (*)(uint32))NQD_invrect);
436	>	compiled = true;
437	>	break;
438	>	case NATIVE_FILLRECT:
439	>	dg.gen_load_T0_GPR(3);
440	>	dg.gen_invoke_T0((void (*)(uint32))NQD_fillrect);
441	>	compiled = true;
442	>	break;
443	>	}
444	>	if (FN_field::test(opcode)) {
445	>	if (compiled) {
446	>	dg.gen_load_A0_LR();
447	>	dg.gen_set_PC_A0();
448		}
449	+	cg_context.done_compile = true;
450		}
451	<	#endif
451	>	else
452	>	cg_context.done_compile = false;
453	>	break;
454		}
243	–	};
455
456	<	// Execution loop
457	<	void sheepshaver_cpu::execute(uint32 entry)
458	<	{
459	<	try {
460	<	pc() = entry;
461	<	powerpc_cpu::do_execute<execute_nothing, execute_spcflags_check>();
462	<	}
463	<	catch (sheepshaver_exec_return const &) {
464	<	// Nothing, simply return
456	>	default: {      // EMUL_OP
457	>	uint32 emul_op = EMUL_OP_field::extract(opcode) - 3;
458	>	#if ENABLE_NATIVE_EMUL_OP
459	>	typedef void (*emul_op_func_t)(dyngen_cpu_base);
460	>	emul_op_func_t emul_op_func = 0;
461	>	switch (emul_op) {
462	>	case OP_MICROSECONDS:
463	>	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_microseconds).ptr();
464	>	break;
465	>	case OP_IDLE_TIME:
466	>	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_1).ptr();
467	>	break;
468	>	case OP_IDLE_TIME_2:
469	>	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_2).ptr();
470	>	break;
471	>	}
472	>	if (emul_op_func) {
473	>	dg.gen_invoke_CPU(emul_op_func);
474	>	cg_context.done_compile = false;
475	>	compiled = true;
476	>	break;
477	>	}
478	>	#endif
479	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
480	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
481	>	dg.gen_invoke_CPU_im(func, emul_op);
482	>	cg_context.done_compile = false;
483	>	compiled = true;
484	>	break;
485		}
255	–	catch (...) {
256	–	printf("ERROR: execute() received an unknown exception!\n");
257	–	QuitEmulator();
486		}
487	+	return compiled;
488	+	#endif
489	+	return false;
490		}
491
492		// Handle MacOS interrupt
493		void sheepshaver_cpu::interrupt(uint32 entry)
494		{
495	+	#if EMUL_TIME_STATS
496	+	interrupt_count++;
497	+	const clock_t interrupt_start = clock();
498	+	#endif
499	+
500	+	#if SAFE_INTERRUPT_PPC
501	+	static int depth = 0;
502	+	if (depth != 0)
503	+	printf("FATAL: sheepshaver_cpu::interrupt() called more than once: %d\n", depth);
504	+	depth++;
505	+	#endif
506	+	#if SAFE_INTERRUPT_PPC >= 2
507	+	uint32 saved_regs[32];
508	+	memcpy(&saved_regs[0], &gpr(0), sizeof(saved_regs));
509	+	#endif
510	+
511		#if !MULTICORE_CPU
512		// Save program counters and branch registers
513		uint32 saved_pc = pc();
#	Line 270 | Line 517 | void sheepshaver_cpu::interrupt(uint32 e
517		#endif
518
519		// Initialize stack pointer to SheepShaver alternate stack base
520	<	gpr(1) = SheepStack1Base - 64;
520	>	gpr(1) = SignalStackBase() - 64;
521
522		// Build trampoline to return from interrupt
523	<	uint32 trampoline[] = { htonl(POWERPC_EMUL_OP | 1) };
523	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
524
525		// Prepare registers for nanokernel interrupt routine
526		kernel_data->v[0x004 >> 2] = htonl(gpr(1));
#	Line 292 | Line 539 | void sheepshaver_cpu::interrupt(uint32 e
539		gpr(1)  = KernelDataAddr;
540		gpr(7)  = ntohl(kernel_data->v[0x660 >> 2]);
541		gpr(8)  = 0;
542	<	gpr(10) = (uint32)trampoline;
543	<	gpr(12) = (uint32)trampoline;
542	>	gpr(10) = trampoline.addr();
543	>	gpr(12) = trampoline.addr();
544		gpr(13) = get_cr();
545
546		// rlwimi. r7,r7,8,0,0
#	Line 314 | Line 561 | void sheepshaver_cpu::interrupt(uint32 e
561		ctr()= saved_ctr;
562		gpr(1) = saved_sp;
563		#endif
564	+
565	+	#if EMUL_TIME_STATS
566	+	interrupt_time += (clock() - interrupt_start);
567	+	#endif
568	+
569	+	#if SAFE_INTERRUPT_PPC >= 2
570	+	if (memcmp(&saved_regs[0], &gpr(0), sizeof(saved_regs)) != 0)
571	+	printf("FATAL: dirty PowerPC registers\n");
572	+	#endif
573	+	#if SAFE_INTERRUPT_PPC
574	+	depth--;
575	+	#endif
576		}
577
578		// Execute 68k routine
579		void sheepshaver_cpu::execute_68k(uint32 entry, M68kRegisters *r)
580		{
581	+	#if EMUL_TIME_STATS
582	+	exec68k_count++;
583	+	const clock_t exec68k_start = clock();
584	+	#endif
585	+
586		#if SAFE_EXEC_68K
587		if (ReadMacInt32(XLM_RUN_MODE) != MODE_EMUL_OP)
588		printf("FATAL: Execute68k() not called from EMUL_OP mode\n");
#	Line 401 | Line 665 | void sheepshaver_cpu::execute_68k(uint32
665		lr() = saved_lr;
666		ctr()= saved_ctr;
667		set_cr(saved_cr);
668	+
669	+	#if EMUL_TIME_STATS
670	+	exec68k_time += (clock() - exec68k_start);
671	+	#endif
672		}
673
674		// Call MacOS PPC code
675		uint32 sheepshaver_cpu::execute_macos_code(uint32 tvect, int nargs, uint32 const *args)
676		{
677	+	#if EMUL_TIME_STATS
678	+	macos_exec_count++;
679	+	const clock_t macos_exec_start = clock();
680	+	#endif
681	+
682		// Save program counters and branch registers
683		uint32 saved_pc = pc();
684		uint32 saved_lr = lr();
685		uint32 saved_ctr= ctr();
686
687		// Build trampoline with EXEC_RETURN
688	<	uint32 trampoline[] = { htonl(POWERPC_EMUL_OP | 1) };
689	<	lr() = (uint32)trampoline;
688	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
689	>	lr() = trampoline.addr();
690
691		gpr(1) -= 64;                                                           // Create stack frame
692		uint32 proc = ReadMacInt32(tvect);                      // Get routine address
#	Line 444 | Line 717 | uint32 sheepshaver_cpu::execute_macos_co
717		lr() = saved_lr;
718		ctr()= saved_ctr;
719
720	+	#if EMUL_TIME_STATS
721	+	macos_exec_time += (clock() - macos_exec_start);
722	+	#endif
723	+
724		return retval;
725		}
726
#	Line 453 | Line 730 | inline void sheepshaver_cpu::execute_ppc
730		// Save branch registers
731		uint32 saved_lr = lr();
732
733	<	const uint32 trampoline[] = { htonl(POWERPC_EMUL_OP | 1) };
734	<	lr() = (uint32)trampoline;
733	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
734	>	WriteMacInt32(trampoline.addr(), POWERPC_EXEC_RETURN);
735	>	lr() = trampoline.addr();
736
737		execute(entry);
738
#	Line 463 | Line 741 | inline void sheepshaver_cpu::execute_ppc
741		}
742
743		// Resource Manager thunk
466	–	extern "C" void check_load_invoc(uint32 type, int16 id, uint32 h);
467	–
744		inline void sheepshaver_cpu::get_resource(uint32 old_get_resource)
745		{
746		uint32 type = gpr(3);
#	Line 548 | Line 824 | static sigsegv_return_t sigsegv_handler(
824		if ((addr - ROM_BASE) < ROM_SIZE)
825		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
826
827	<	// Ignore all other faults, if requested
828	<	if (PrefsFindBool("ignoresegv"))
829	<	return SIGSEGV_RETURN_FAILURE;
827	>	// Get program counter of target CPU
828	>	sheepshaver_cpu * const cpu = current_cpu;
829	>	const uint32 pc = cpu->pc();
830	>
831	>	// Fault in Mac ROM or RAM?
832	>	bool mac_fault = (pc >= ROM_BASE) && (pc < (ROM_BASE + ROM_AREA_SIZE)) || (pc >= RAMBase) && (pc < (RAMBase + RAMSize));
833	>	if (mac_fault) {
834	>
835	>	// "VM settings" during MacOS 8 installation
836	>	if (pc == ROM_BASE + 0x488160 && cpu->gpr(20) == 0xf8000000)
837	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
838	>
839	>	// MacOS 8.5 installation
840	>	else if (pc == ROM_BASE + 0x488140 && cpu->gpr(16) == 0xf8000000)
841	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
842	>
843	>	// MacOS 8 serial drivers on startup
844	>	else if (pc == ROM_BASE + 0x48e080 && (cpu->gpr(8) == 0xf3012002 || cpu->gpr(8) == 0xf3012000))
845	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
846	>
847	>	// MacOS 8.1 serial drivers on startup
848	>	else if (pc == ROM_BASE + 0x48c5e0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
849	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
850	>	else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
851	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
852	>
853	>	// Ignore writes to the zero page
854	>	else if ((uint32)(addr - SheepMem::ZeroPage()) < (uint32)SheepMem::PageSize())
855	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
856	>
857	>	// Ignore all other faults, if requested
858	>	if (PrefsFindBool("ignoresegv"))
859	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
860	>	}
861		#else
862		#error "FIXME: You don't have the capability to skip instruction within signal handlers"
863		#endif
#	Line 572 | Line 879 | void init_emul_ppc(void)
879		// Initialize main CPU emulator
880		main_cpu = new sheepshaver_cpu();
881		main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
882	+	main_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
883		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
884
885		#if MULTICORE_CPU
#	Line 587 | Line 895 | void init_emul_ppc(void)
895		mon_add_command("regs", dump_registers, "regs                     Dump PowerPC registers\n");
896		mon_add_command("log", dump_log, "log                      Dump PowerPC emulation log\n");
897		#endif
898	+
899	+	#if EMUL_TIME_STATS
900	+	emul_start_time = clock();
901	+	#endif
902	+	}
903	+
904	+	/*
905	+	*  Deinitialize emulation
906	+	*/
907	+
908	+	void exit_emul_ppc(void)
909	+	{
910	+	#if EMUL_TIME_STATS
911	+	clock_t emul_end_time = clock();
912	+
913	+	printf("### Statistics for SheepShaver emulation parts\n");
914	+	const clock_t emul_time = emul_end_time - emul_start_time;
915	+	printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
916	+	printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
917	+	(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
918	+
919	+	#define PRINT_STATS(LABEL, VAR_PREFIX) do {                                                             \
920	+	printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count);             \
921	+	printf("Total " LABEL " time  : %.1f sec (%.1f%%)\n",                   \
922	+	double(VAR_PREFIX##_time) / double(CLOCKS_PER_SEC),          \
923	+	100.0 * double(VAR_PREFIX##_time) / double(emul_time));      \
924	+	} while (0)
925	+
926	+	PRINT_STATS("Execute68k[Trap] execution", exec68k);
927	+	PRINT_STATS("NativeOp execution", native_exec);
928	+	PRINT_STATS("MacOS routine execution", macos_exec);
929	+
930	+	#undef PRINT_STATS
931	+	printf("\n");
932	+	#endif
933	+
934	+	delete main_cpu;
935	+	#if MULTICORE_CPU
936	+	delete interrupt_cpu;
937	+	#endif
938		}
939
940		/*
#	Line 596 | Line 944 | void init_emul_ppc(void)
944		void emul_ppc(uint32 entry)
945		{
946		current_cpu = main_cpu;
947	+	#if 0
948		current_cpu->start_log();
949	+	#endif
950	+	// start emulation loop and enable code translation or caching
951		current_cpu->execute(entry);
952		}
953
#	Line 604 | Line 955 | void emul_ppc(uint32 entry)
955		*  Handle PowerPC interrupt
956		*/
957
958	<	// Atomic operations
959	<	extern int atomic_add(int *var, int v);
960	<	extern int atomic_and(int *var, int v);
961	<	extern int atomic_or(int *var, int v);
962	<
963	<	#if !ASYNC_IRQ
958	>	#if ASYNC_IRQ
959	>	void HandleInterrupt(void)
960	>	{
961	>	main_cpu->handle_interrupt();
962	>	}
963	>	#else
964		void TriggerInterrupt(void)
965		{
966		#if 0
967		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
968		#else
969	<	SPCFLAGS_SET( SPCFLAG_INT );
969	>	// Trigger interrupt to main cpu only
970	>	if (main_cpu)
971	>	main_cpu->trigger_interrupt();
972		#endif
973		}
974		#endif
975
976	<	void HandleInterrupt(void)
976	>	void sheepshaver_cpu::handle_interrupt(void)
977		{
978		// Do nothing if interrupts are disabled
979	<	if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
979	>	if (*(int32 *)XLM_IRQ_NEST > 0)
980		return;
981
982		// Do nothing if there is no interrupt pending
#	Line 639 | Line 992 | void HandleInterrupt(void)
992		// 68k emulator active, trigger 68k interrupt level 1
993		assert(current_cpu == main_cpu);
994		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
995	<	main_cpu->set_cr(main_cpu->get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
995	>	set_cr(get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
996		break;
997
998		#if INTERRUPTS_IN_NATIVE_MODE
999		case MODE_NATIVE:
1000		// 68k emulator inactive, in nanokernel?
1001		assert(current_cpu == main_cpu);
1002	<	if (main_cpu->gpr(1) != KernelDataAddr) {
1002	>	if (gpr(1) != KernelDataAddr) {
1003		// Prepare for 68k interrupt level 1
1004		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1005		WriteMacInt32(tswap32(kernel_data->v[0x658 >> 2]) + 0xdc,
#	Line 690 | Line 1043 | void HandleInterrupt(void)
1043		if (InterruptFlags & INTFLAG_VIA) {
1044		ClearInterruptFlag(INTFLAG_VIA);
1045		ADBInterrupt();
1046	<	ExecutePPC(VideoVBL);
1046	>	ExecuteNative(NATIVE_VIDEO_VBL);
1047		}
1048		}
1049		#endif
#	Line 700 | Line 1053 | void HandleInterrupt(void)
1053		}
1054		}
1055
703	–	/*
704	–	*  Execute NATIVE_OP opcode (called by PowerPC emulator)
705	–	*/
706	–
707	–	#define POWERPC_NATIVE_OP_INIT(LR, OP) \
708	–	tswap32(POWERPC_EMUL_OP | ((LR) << 11) | (((uint32)OP) << 6) | 2)
709	–
710	–	// FIXME: Make sure 32-bit relocations are used
711	–	const uint32 NativeOpTable[NATIVE_OP_MAX] = {
712	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_PATCH_NAME_REGISTRY),
713	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_INSTALL_ACCEL),
714	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_VBL),
715	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_DO_DRIVER_IO),
716	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_IRQ),
717	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_INIT),
718	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_TERM),
719	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_OPEN),
720	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_CLOSE),
721	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_WPUT),
722	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_RSRV),
723	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_NOTHING),
724	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_OPEN),
725	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_PRIME_IN),
726	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_PRIME_OUT),
727	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_CONTROL),
728	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_STATUS),
729	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_CLOSE),
730	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_RESOURCE),
731	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_1_RESOURCE),
732	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_IND_RESOURCE),
733	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_1_IND_RESOURCE),
734	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_R_GET_RESOURCE),
735	–	POWERPC_NATIVE_OP_INIT(0, NATIVE_DISABLE_INTERRUPT),
736	–	POWERPC_NATIVE_OP_INIT(0, NATIVE_ENABLE_INTERRUPT),
737	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_MAKE_EXECUTABLE),
738	–	};
739	–
1056		static void get_resource(void);
1057		static void get_1_resource(void);
1058		static void get_ind_resource(void);
#	Line 747 | Line 1063 | static void r_get_resource(void);
1063
1064		static void NativeOp(int selector)
1065		{
1066	+	#if EMUL_TIME_STATS
1067	+	native_exec_count++;
1068	+	const clock_t native_exec_start = clock();
1069	+	#endif
1070	+
1071		switch (selector) {
1072		case NATIVE_PATCH_NAME_REGISTRY:
1073		DoPatchNameRegistry();
#	Line 761 | Line 1082 | static void NativeOp(int selector)
1082		GPR(3) = (int32)(int16)VideoDoDriverIO((void *)GPR(3), (void *)GPR(4),
1083		(void *)GPR(5), GPR(6), GPR(7));
1084		break;
1085	<	case NATIVE_GET_RESOURCE:
1086	<	get_resource();
1085	>	#ifdef WORDS_BIGENDIAN
1086	>	case NATIVE_ETHER_IRQ:
1087	>	EtherIRQ();
1088		break;
1089	<	case NATIVE_GET_1_RESOURCE:
1090	<	get_1_resource();
1089	>	case NATIVE_ETHER_INIT:
1090	>	GPR(3) = InitStreamModule((void *)GPR(3));
1091		break;
1092	<	case NATIVE_GET_IND_RESOURCE:
1093	<	get_ind_resource();
1092	>	case NATIVE_ETHER_TERM:
1093	>	TerminateStreamModule();
1094		break;
1095	<	case NATIVE_GET_1_IND_RESOURCE:
1096	<	get_1_ind_resource();
1095	>	case NATIVE_ETHER_OPEN:
1096	>	GPR(3) = ether_open((queue_t *)GPR(3), (void *)GPR(4), GPR(5), GPR(6), (void*)GPR(7));
1097		break;
1098	<	case NATIVE_R_GET_RESOURCE:
1099	<	r_get_resource();
1098	>	case NATIVE_ETHER_CLOSE:
1099	>	GPR(3) = ether_close((queue_t *)GPR(3), GPR(4), (void *)GPR(5));
1100	>	break;
1101	>	case NATIVE_ETHER_WPUT:
1102	>	GPR(3) = ether_wput((queue_t *)GPR(3), (mblk_t *)GPR(4));
1103	>	break;
1104	>	case NATIVE_ETHER_RSRV:
1105	>	GPR(3) = ether_rsrv((queue_t *)GPR(3));
1106	>	break;
1107	>	#else
1108	>	case NATIVE_ETHER_INIT:
1109	>	// FIXME: needs more complicated thunks
1110	>	GPR(3) = false;
1111	>	break;
1112	>	#endif
1113	>	case NATIVE_SYNC_HOOK:
1114	>	GPR(3) = NQD_sync_hook(GPR(3));
1115	>	break;
1116	>	case NATIVE_BITBLT_HOOK:
1117	>	GPR(3) = NQD_bitblt_hook(GPR(3));
1118	>	break;
1119	>	case NATIVE_BITBLT:
1120	>	NQD_bitblt(GPR(3));
1121	>	break;
1122	>	case NATIVE_FILLRECT_HOOK:
1123	>	GPR(3) = NQD_fillrect_hook(GPR(3));
1124	>	break;
1125	>	case NATIVE_INVRECT:
1126	>	NQD_invrect(GPR(3));
1127	>	break;
1128	>	case NATIVE_FILLRECT:
1129	>	NQD_fillrect(GPR(3));
1130		break;
1131		case NATIVE_SERIAL_NOTHING:
1132		case NATIVE_SERIAL_OPEN:
#	Line 796 | Line 1148 | static void NativeOp(int selector)
1148		GPR(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](GPR(3), GPR(4));
1149		break;
1150		}
1151	+	case NATIVE_GET_RESOURCE:
1152	+	case NATIVE_GET_1_RESOURCE:
1153	+	case NATIVE_GET_IND_RESOURCE:
1154	+	case NATIVE_GET_1_IND_RESOURCE:
1155	+	case NATIVE_R_GET_RESOURCE: {
1156	+	typedef void (*GetResourceCallback)(void);
1157	+	static const GetResourceCallback get_resource_callbacks[] = {
1158	+	get_resource,
1159	+	get_1_resource,
1160	+	get_ind_resource,
1161	+	get_1_ind_resource,
1162	+	r_get_resource
1163	+	};
1164	+	get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1165	+	break;
1166	+	}
1167		case NATIVE_DISABLE_INTERRUPT:
1168		DisableInterrupt();
1169		break;
#	Line 805 | Line 1173 | static void NativeOp(int selector)
1173		case NATIVE_MAKE_EXECUTABLE:
1174		MakeExecutable(0, (void *)GPR(4), GPR(5));
1175		break;
1176	+	case NATIVE_CHECK_LOAD_INVOC:
1177	+	check_load_invoc(GPR(3), GPR(4), GPR(5));
1178	+	break;
1179		default:
1180		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
1181		QuitEmulator();
1182		break;
1183		}
813	–	}
1184
1185	<	/*
1186	<	*  Execute native subroutine (LR must contain return address)
1187	<	*/
818	<
819	<	void ExecuteNative(int selector)
820	<	{
821	<	uint32 tvect[2];
822	<	tvect[0] = tswap32(POWERPC_NATIVE_OP_FUNC(selector));
823	<	tvect[1] = 0; // Fake TVECT
824	<	RoutineDescriptor desc = BUILD_PPC_ROUTINE_DESCRIPTOR(0, tvect);
825	<	M68kRegisters r;
826	<	Execute68k((uint32)&desc, &r);
1185	>	#if EMUL_TIME_STATS
1186	>	native_exec_time += (clock() - native_exec_start);
1187	>	#endif
1188		}
1189
1190		/*
#	Line 844 | Line 1205 | void Execute68k(uint32 pc, M68kRegisters
1205
1206		void Execute68kTrap(uint16 trap, M68kRegisters *r)
1207		{
1208	<	uint16 proc[2];
1209	<	proc[0] = htons(trap);
1210	<	proc[1] = htons(M68K_RTS);
1211	<	Execute68k((uint32)proc, r);
1208	>	SheepVar proc_var(4);
1209	>	uint32 proc = proc_var.addr();
1210	>	WriteMacInt16(proc, trap);
1211	>	WriteMacInt16(proc + 2, M68K_RTS);
1212	>	Execute68k(proc, r);
1213		}
1214
1215		/*
#	Line 902 | Line 1264 | uint32 call_macos7(uint32 tvect, uint32
1264		}
1265
1266		/*
905	–	*  Atomic operations
906	–	*/
907	–
908	–	int atomic_add(int *var, int v)
909	–	{
910	–	int ret = *var;
911	–	*var += v;
912	–	return ret;
913	–	}
914	–
915	–	int atomic_and(int *var, int v)
916	–	{
917	–	int ret = *var;
918	–	*var &= v;
919	–	return ret;
920	–	}
921	–
922	–	int atomic_or(int *var, int v)
923	–	{
924	–	int ret = *var;
925	–	*var |= v;
926	–	return ret;
927	–	}
928	–
929	–	/*
1267		*  Resource Manager thunks
1268		*/
1269

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