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

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.3 by gbeauche, 2003-09-29T07:05:15Z vs.
Revision 1.48 by gbeauche, 2004-06-26T15:26:18Z

#	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	+	#ifdef USE_SDL_VIDEO
47	+	#include <SDL_events.h>
48	+	#endif
49
50		#if ENABLE_MON
51		#include "mon.h"
52		#include "mon_disass.h"
53		#endif
54
55	<	#define DEBUG 1
55	>	#define DEBUG 0
56		#include "debug.h"
57
58	+	// Emulation time statistics
59	+	#ifndef EMUL_TIME_STATS
60	+	#define EMUL_TIME_STATS 0
61	+	#endif
62	+
63	+	#if EMUL_TIME_STATS
64	+	static clock_t emul_start_time;
65	+	static uint32 interrupt_count = 0, ppc_interrupt_count = 0;
66	+	static clock_t interrupt_time = 0;
67	+	static uint32 exec68k_count = 0;
68	+	static clock_t exec68k_time = 0;
69	+	static uint32 native_exec_count = 0;
70	+	static clock_t native_exec_time = 0;
71	+	static uint32 macos_exec_count = 0;
72	+	static clock_t macos_exec_time = 0;
73	+	#endif
74	+
75		static void enter_mon(void)
76		{
77		// Start up mon in real-mode
#	Line 56 | Line 81 | static void enter_mon(void)
81		#endif
82		}
83
84	<	// Enable multicore (main/interrupts) cpu emulation?
85	<	#define MULTICORE_CPU 0
84	>	// From main_*.cpp
85	>	extern uintptr SignalStackBase();
86	>
87	>	// From rsrc_patches.cpp
88	>	extern "C" void check_load_invoc(uint32 type, int16 id, uint32 h);
89	>
90	>	// PowerPC EmulOp to exit from emulation looop
91	>	const uint32 POWERPC_EXEC_RETURN = POWERPC_EMUL_OP | 1;
92	>
93	>	// Enable interrupt routine safety checks?
94	>	#define SAFE_INTERRUPT_PPC 1
95
96		// Enable Execute68k() safety checks?
97		#define SAFE_EXEC_68K 1
#	Line 71 | Line 105 | static void enter_mon(void)
105		// Interrupts in native mode?
106		#define INTERRUPTS_IN_NATIVE_MODE 1
107
108	<	// 68k Emulator Data
109	<	struct EmulatorData {
76	<	uint32  v[0x400];
77	<	};
78	<
79	<	// Kernel Data
80	<	struct KernelData {
81	<	uint32  v[0x400];
82	<	EmulatorData ed;
83	<	};
108	>	// Enable native EMUL_OPs to be run without a mode switch
109	>	#define ENABLE_NATIVE_EMUL_OP 1
110
111		// Pointer to Kernel Data
112	<	static KernelData * const kernel_data = (KernelData *)0x68ffe000;
112	>	static KernelData * const kernel_data = (KernelData *)KERNEL_DATA_BASE;
113	>
114	>	// SIGSEGV handler
115	>	sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
116	>
117	>	#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
118	>	// Special trampolines for EmulOp and NativeOp
119	>	static uint8 *emul_op_trampoline;
120	>	static uint8 *native_op_trampoline;
121	>	#endif
122	>
123	>	// JIT Compiler enabled?
124	>	static inline bool enable_jit_p()
125	>	{
126	>	return PrefsFindBool("jit");
127	>	}
128
129
130		/**
131		*              PowerPC emulator glue with special 'sheep' opcodes
132		**/
133
134	<	struct sheepshaver_exec_return { };
134	>	enum {
135	>	PPC_I(SHEEP) = PPC_I(MAX),
136	>	PPC_I(SHEEP_MAX)
137	>	};
138
139		class sheepshaver_cpu
140		: public powerpc_cpu
#	Line 98 | Line 142 | class sheepshaver_cpu
142		void init_decoder();
143		void execute_sheep(uint32 opcode);
144
145	+	// Filter out EMUL_OP routines that only call native code
146	+	bool filter_execute_emul_op(uint32 emul_op);
147	+
148	+	// "Native" EMUL_OP routines
149	+	void execute_emul_op_microseconds();
150	+	void execute_emul_op_idle_time_1();
151	+	void execute_emul_op_idle_time_2();
152	+
153	+	// CPU context to preserve on interrupt
154	+	class interrupt_context {
155	+	uint32 gpr[32];
156	+	uint32 pc;
157	+	uint32 lr;
158	+	uint32 ctr;
159	+	uint32 cr;
160	+	uint32 xer;
161	+	sheepshaver_cpu *cpu;
162	+	const char *where;
163	+	public:
164	+	interrupt_context(sheepshaver_cpu *_cpu, const char *_where);
165	+	~interrupt_context();
166	+	};
167	+
168		public:
169
170	<	sheepshaver_cpu()
171	<	: powerpc_cpu()
105	<	{ init_decoder(); }
170	>	// Constructor
171	>	sheepshaver_cpu();
172
173	<	// Condition Register accessors
173	>	// CR & XER accessors
174		uint32 get_cr() const           { return cr().get(); }
175		void set_cr(uint32 v)           { cr().set(v); }
176	+	uint32 get_xer() const          { return xer().get(); }
177	+	void set_xer(uint32 v)          { xer().set(v); }
178	+
179	+	// Execute NATIVE_OP routine
180	+	void execute_native_op(uint32 native_op);
181
182	<	// Execution loop
183	<	void execute(uint32 pc);
182	>	// Execute EMUL_OP routine
183	>	void execute_emul_op(uint32 emul_op);
184
185		// Execute 68k routine
186		void execute_68k(uint32 entry, M68kRegisters *r);
#	Line 120 | Line 191 | public:
191		// Execute MacOS/PPC code
192		uint32 execute_macos_code(uint32 tvect, int nargs, uint32 const *args);
193
194	+	// Compile one instruction
195	+	virtual int compile1(codegen_context_t & cg_context);
196	+
197		// Resource manager thunk
198		void get_resource(uint32 old_get_resource);
199
200		// Handle MacOS interrupt
201	<	void interrupt(uint32 entry, sheepshaver_cpu *cpu);
202	<
129	<	// spcflags for interrupts handling
130	<	static uint32 spcflags;
201	>	void interrupt(uint32 entry);
202	>	void handle_interrupt();
203
204	<	// Lazy memory allocator (one item at a time)
205	<	void *operator new(size_t size)
134	<	{ return allocator_helper< sheepshaver_cpu, lazy_allocator >::allocate(); }
135	<	void operator delete(void *p)
136	<	{ allocator_helper< sheepshaver_cpu, lazy_allocator >::deallocate(p); }
137	<	// FIXME: really make surre array allocation fail at link time?
138	<	void *operator new[](size_t);
139	<	void operator delete[](void *p);
204	>	// Make sure the SIGSEGV handler can access CPU registers
205	>	friend sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
206		};
207
208	<	uint32 sheepshaver_cpu::spcflags = 0;
209	<	lazy_allocator< sheepshaver_cpu > allocator_helper< sheepshaver_cpu, lazy_allocator >::allocator;
208	>	// Memory allocator returning areas aligned on 16-byte boundaries
209	>	void *operator new(size_t size)
210	>	{
211	>	void *p;
212
213	<	void sheepshaver_cpu::init_decoder()
213	>	#if defined(HAVE_POSIX_MEMALIGN)
214	>	if (posix_memalign(&p, 16, size) != 0)
215	>	throw std::bad_alloc();
216	>	#elif defined(HAVE_MEMALIGN)
217	>	p = memalign(16, size);
218	>	#elif defined(HAVE_VALLOC)
219	>	p = valloc(size); // page-aligned!
220	>	#else
221	>	/* XXX: handle padding ourselves */
222	>	p = malloc(size);
223	>	#endif
224	>
225	>	return p;
226	>	}
227	>
228	>	void operator delete(void *p)
229		{
230	<	#ifndef PPC_NO_STATIC_II_INDEX_TABLE
231	<	static bool initialized = false;
232	<	if (initialized)
233	<	return;
234	<	initialized = true;
230	>	#if defined(HAVE_MEMALIGN) || defined(HAVE_VALLOC)
231	>	#if defined(__GLIBC__)
232	>	// this is known to work only with GNU libc
233	>	free(p);
234	>	#endif
235	>	#else
236	>	free(p);
237		#endif
238	+	}
239	+
240	+	sheepshaver_cpu::sheepshaver_cpu()
241	+	: powerpc_cpu(enable_jit_p())
242	+	{
243	+	init_decoder();
244	+	}
245
246	+	void sheepshaver_cpu::init_decoder()
247	+	{
248		static const instr_info_t sheep_ii_table[] = {
249		{ "sheep",
250	<	(execute_fn)&sheepshaver_cpu::execute_sheep,
250	>	(execute_pmf)&sheepshaver_cpu::execute_sheep,
251		NULL,
252	<	D_form, 6, 0, CFLOW_TRAP
252	>	PPC_I(SHEEP),
253	>	D_form, 6, 0, CFLOW_JUMP | CFLOW_TRAP
254		}
255		};
256
#	Line 168 | Line 263 | void sheepshaver_cpu::init_decoder()
263		}
264		}
265
171	–	// Forward declaration for native opcode handler
172	–	static void NativeOp(int selector);
173	–
266		/*              NativeOp instruction format:
267	<	+------------+--------------------------+--+----------+------------+
268	<	|      6     |                          |FN|    OP    |      2     |
269	<	+------------+--------------------------+--+----------+------------+
270	<	0         5 |6                       19 20 21      25 26        31
267	>	+------------+-------------------------+--+-----------+------------+
268	>	|      6     |                         |FN|    OP     |      2     |
269	>	+------------+-------------------------+--+-----------+------------+
270	>	0         5 |6                      18 19 20      25 26        31
271		*/
272
273	<	typedef bit_field< 20, 20 > FN_field;
274	<	typedef bit_field< 21, 25 > NATIVE_OP_field;
273	>	typedef bit_field< 19, 19 > FN_field;
274	>	typedef bit_field< 20, 25 > NATIVE_OP_field;
275		typedef bit_field< 26, 31 > EMUL_OP_field;
276
277	+	// "Native" EMUL_OP routines
278	+	#define GPR_A(REG) gpr(16 + (REG))
279	+	#define GPR_D(REG) gpr( 8 + (REG))
280	+
281	+	void sheepshaver_cpu::execute_emul_op_microseconds()
282	+	{
283	+	Microseconds(GPR_A(0), GPR_D(0));
284	+	}
285	+
286	+	void sheepshaver_cpu::execute_emul_op_idle_time_1()
287	+	{
288	+	// Sleep if no events pending
289	+	if (ReadMacInt32(0x14c) == 0)
290	+	Delay_usec(16667);
291	+	GPR_A(0) = ReadMacInt32(0x2b6);
292	+	}
293	+
294	+	void sheepshaver_cpu::execute_emul_op_idle_time_2()
295	+	{
296	+	// Sleep if no events pending
297	+	if (ReadMacInt32(0x14c) == 0)
298	+	Delay_usec(16667);
299	+	GPR_D(0) = (uint32)-2;
300	+	}
301	+
302	+	// Filter out EMUL_OP routines that only call native code
303	+	bool sheepshaver_cpu::filter_execute_emul_op(uint32 emul_op)
304	+	{
305	+	switch (emul_op) {
306	+	case OP_MICROSECONDS:
307	+	execute_emul_op_microseconds();
308	+	return true;
309	+	case OP_IDLE_TIME:
310	+	execute_emul_op_idle_time_1();
311	+	return true;
312	+	case OP_IDLE_TIME_2:
313	+	execute_emul_op_idle_time_2();
314	+	return true;
315	+	}
316	+	return false;
317	+	}
318	+
319	+	// Execute EMUL_OP routine
320	+	void sheepshaver_cpu::execute_emul_op(uint32 emul_op)
321	+	{
322	+	#if ENABLE_NATIVE_EMUL_OP
323	+	// First, filter out EMUL_OPs that can be executed without a mode switch
324	+	if (filter_execute_emul_op(emul_op))
325	+	return;
326	+	#endif
327	+
328	+	M68kRegisters r68;
329	+	WriteMacInt32(XLM_68K_R25, gpr(25));
330	+	WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
331	+	for (int i = 0; i < 8; i++)
332	+	r68.d[i] = gpr(8 + i);
333	+	for (int i = 0; i < 7; i++)
334	+	r68.a[i] = gpr(16 + i);
335	+	r68.a[7] = gpr(1);
336	+	uint32 saved_cr = get_cr() & CR_field<2>::mask();
337	+	uint32 saved_xer = get_xer();
338	+	EmulOp(&r68, gpr(24), emul_op);
339	+	set_cr(saved_cr);
340	+	set_xer(saved_xer);
341	+	for (int i = 0; i < 8; i++)
342	+	gpr(8 + i) = r68.d[i];
343	+	for (int i = 0; i < 7; i++)
344	+	gpr(16 + i) = r68.a[i];
345	+	gpr(1) = r68.a[7];
346	+	WriteMacInt32(XLM_RUN_MODE, MODE_68K);
347	+	}
348	+
349		// Execute SheepShaver instruction
350		void sheepshaver_cpu::execute_sheep(uint32 opcode)
351		{
#	Line 192 | Line 356 | void sheepshaver_cpu::execute_sheep(uint
356		case 0:         // EMUL_RETURN
357		QuitEmulator();
358		break;
359	<
359	>
360		case 1:         // EXEC_RETURN
361	<	throw sheepshaver_exec_return();
361	>	spcflags().set(SPCFLAG_CPU_EXEC_RETURN);
362		break;
363
364		case 2:         // EXEC_NATIVE
365	<	NativeOp(NATIVE_OP_field::extract(opcode));
365	>	execute_native_op(NATIVE_OP_field::extract(opcode));
366		if (FN_field::test(opcode))
367		pc() = lr();
368		else
369		pc() += 4;
370		break;
371
372	<	default: {      // EMUL_OP
373	<	M68kRegisters r68;
210	<	WriteMacInt32(XLM_68K_R25, gpr(25));
211	<	WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
212	<	for (int i = 0; i < 8; i++)
213	<	r68.d[i] = gpr(8 + i);
214	<	for (int i = 0; i < 7; i++)
215	<	r68.a[i] = gpr(16 + i);
216	<	r68.a[7] = gpr(1);
217	<	EmulOp(&r68, gpr(24), EMUL_OP_field::extract(opcode) - 3);
218	<	for (int i = 0; i < 8; i++)
219	<	gpr(8 + i) = r68.d[i];
220	<	for (int i = 0; i < 7; i++)
221	<	gpr(16 + i) = r68.a[i];
222	<	gpr(1) = r68.a[7];
223	<	WriteMacInt32(XLM_RUN_MODE, MODE_68K);
372	>	default:        // EMUL_OP
373	>	execute_emul_op(EMUL_OP_field::extract(opcode) - 3);
374		pc() += 4;
375		break;
376		}
227	–	}
377		}
378
379	<	// Checks for pending interrupts
380	<	struct execute_nothing {
381	<	static inline void execute(powerpc_cpu *) { }
382	<	};
379	>	// Compile one instruction
380	>	int sheepshaver_cpu::compile1(codegen_context_t & cg_context)
381	>	{
382	>	#if PPC_ENABLE_JIT
383	>	const instr_info_t *ii = cg_context.instr_info;
384	>	if (ii->mnemo != PPC_I(SHEEP))
385	>	return COMPILE_FAILURE;
386	>
387	>	int status = COMPILE_FAILURE;
388	>	powerpc_dyngen & dg = cg_context.codegen;
389	>	uint32 opcode = cg_context.opcode;
390
391	<	static void HandleInterrupt(void);
391	>	switch (opcode & 0x3f) {
392	>	case 0:         // EMUL_RETURN
393	>	dg.gen_invoke(QuitEmulator);
394	>	status = COMPILE_CODE_OK;
395	>	break;
396
397	<	struct execute_spcflags_check {
398	<	static inline void execute(powerpc_cpu *cpu) {
399	<	if (SPCFLAGS_TEST(SPCFLAG_ALL_BUT_EXEC_RETURN)) {
400	<	if (SPCFLAGS_TEST( SPCFLAG_ENTER_MON )) {
401	<	SPCFLAGS_CLEAR( SPCFLAG_ENTER_MON );
402	<	enter_mon();
403	<	}
404	<	if (SPCFLAGS_TEST( SPCFLAG_DOINT )) {
405	<	SPCFLAGS_CLEAR( SPCFLAG_DOINT );
406	<	HandleInterrupt();
407	<	}
408	<	if (SPCFLAGS_TEST( SPCFLAG_INT )) {
409	<	SPCFLAGS_CLEAR( SPCFLAG_INT );
410	<	SPCFLAGS_SET( SPCFLAG_DOINT );
397	>	case 1:         // EXEC_RETURN
398	>	dg.gen_spcflags_set(SPCFLAG_CPU_EXEC_RETURN);
399	>	// Don't check for pending interrupts, we do know we have to
400	>	// get out of this block ASAP
401	>	dg.gen_exec_return();
402	>	status = COMPILE_EPILOGUE_OK;
403	>	break;
404	>
405	>	case 2: {       // EXEC_NATIVE
406	>	uint32 selector = NATIVE_OP_field::extract(opcode);
407	>	switch (selector) {
408	>	#if !PPC_REENTRANT_JIT
409	>	// Filter out functions that may invoke Execute68k() or
410	>	// CallMacOS(), this would break reentrancy as they could
411	>	// invalidate the translation cache and even overwrite
412	>	// continuation code when we are done with them.
413	>	case NATIVE_PATCH_NAME_REGISTRY:
414	>	dg.gen_invoke(DoPatchNameRegistry);
415	>	status = COMPILE_CODE_OK;
416	>	break;
417	>	case NATIVE_VIDEO_INSTALL_ACCEL:
418	>	dg.gen_invoke(VideoInstallAccel);
419	>	status = COMPILE_CODE_OK;
420	>	break;
421	>	case NATIVE_VIDEO_VBL:
422	>	dg.gen_invoke(VideoVBL);
423	>	status = COMPILE_CODE_OK;
424	>	break;
425	>	case NATIVE_GET_RESOURCE:
426	>	case NATIVE_GET_1_RESOURCE:
427	>	case NATIVE_GET_IND_RESOURCE:
428	>	case NATIVE_GET_1_IND_RESOURCE:
429	>	case NATIVE_R_GET_RESOURCE: {
430	>	static const uint32 get_resource_ptr[] = {
431	>	XLM_GET_RESOURCE,
432	>	XLM_GET_1_RESOURCE,
433	>	XLM_GET_IND_RESOURCE,
434	>	XLM_GET_1_IND_RESOURCE,
435	>	XLM_R_GET_RESOURCE
436	>	};
437	>	uint32 old_get_resource = ReadMacInt32(get_resource_ptr[selector - NATIVE_GET_RESOURCE]);
438	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
439	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::get_resource).ptr();
440	>	dg.gen_invoke_CPU_im(func, old_get_resource);
441	>	status = COMPILE_CODE_OK;
442	>	break;
443	>	}
444	>	case NATIVE_CHECK_LOAD_INVOC:
445	>	dg.gen_load_T0_GPR(3);
446	>	dg.gen_load_T1_GPR(4);
447	>	dg.gen_se_16_32_T1();
448	>	dg.gen_load_T2_GPR(5);
449	>	dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc);
450	>	status = COMPILE_CODE_OK;
451	>	break;
452	>	#endif
453	>	case NATIVE_BITBLT:
454	>	dg.gen_load_T0_GPR(3);
455	>	dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt);
456	>	status = COMPILE_CODE_OK;
457	>	break;
458	>	case NATIVE_INVRECT:
459	>	dg.gen_load_T0_GPR(3);
460	>	dg.gen_invoke_T0((void (*)(uint32))NQD_invrect);
461	>	status = COMPILE_CODE_OK;
462	>	break;
463	>	case NATIVE_FILLRECT:
464	>	dg.gen_load_T0_GPR(3);
465	>	dg.gen_invoke_T0((void (*)(uint32))NQD_fillrect);
466	>	status = COMPILE_CODE_OK;
467	>	break;
468	>	}
469	>	// Could we fully translate this NativeOp?
470	>	if (status == COMPILE_CODE_OK) {
471	>	if (!FN_field::test(opcode))
472	>	cg_context.done_compile = false;
473	>	else {
474	>	dg.gen_load_A0_LR();
475	>	dg.gen_set_PC_A0();
476	>	cg_context.done_compile = true;
477		}
478	+	break;
479	+	}
480	+	#if PPC_REENTRANT_JIT
481	+	// Try to execute NativeOp trampoline
482	+	if (!FN_field::test(opcode))
483	+	dg.gen_set_PC_im(cg_context.pc + 4);
484	+	else {
485	+	dg.gen_load_A0_LR();
486	+	dg.gen_set_PC_A0();
487		}
488	+	dg.gen_mov_32_T0_im(selector);
489	+	dg.gen_jmp(native_op_trampoline);
490	+	cg_context.done_compile = true;
491	+	status = COMPILE_EPILOGUE_OK;
492	+	break;
493	+	#endif
494	+	// Invoke NativeOp handler
495	+	if (!FN_field::test(opcode)) {
496	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
497	+	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
498	+	dg.gen_invoke_CPU_im(func, selector);
499	+	cg_context.done_compile = false;
500	+	status = COMPILE_CODE_OK;
501	+	}
502	+	// Otherwise, let it generate a call to execute_sheep() which
503	+	// will cause necessary updates to the program counter
504	+	break;
505		}
254	–	};
506
507	<	// Execution loop
508	<	void sheepshaver_cpu::execute(uint32 entry)
509	<	{
510	<	try {
511	<	pc() = entry;
512	<	powerpc_cpu::do_execute<execute_nothing, execute_spcflags_check>();
507	>	default: {      // EMUL_OP
508	>	uint32 emul_op = EMUL_OP_field::extract(opcode) - 3;
509	>	#if ENABLE_NATIVE_EMUL_OP
510	>	typedef void (*emul_op_func_t)(dyngen_cpu_base);
511	>	emul_op_func_t emul_op_func = 0;
512	>	switch (emul_op) {
513	>	case OP_MICROSECONDS:
514	>	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_microseconds).ptr();
515	>	break;
516	>	case OP_IDLE_TIME:
517	>	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_1).ptr();
518	>	break;
519	>	case OP_IDLE_TIME_2:
520	>	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_2).ptr();
521	>	break;
522	>	}
523	>	if (emul_op_func) {
524	>	dg.gen_invoke_CPU(emul_op_func);
525	>	cg_context.done_compile = false;
526	>	status = COMPILE_CODE_OK;
527	>	break;
528	>	}
529	>	#endif
530	>	#if PPC_REENTRANT_JIT
531	>	// Try to execute EmulOp trampoline
532	>	dg.gen_set_PC_im(cg_context.pc + 4);
533	>	dg.gen_mov_32_T0_im(emul_op);
534	>	dg.gen_jmp(emul_op_trampoline);
535	>	cg_context.done_compile = true;
536	>	status = COMPILE_EPILOGUE_OK;
537	>	break;
538	>	#endif
539	>	// Invoke EmulOp handler
540	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
541	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
542	>	dg.gen_invoke_CPU_im(func, emul_op);
543	>	cg_context.done_compile = false;
544	>	status = COMPILE_CODE_OK;
545	>	break;
546		}
263	–	catch (sheepshaver_exec_return const &) {
264	–	// Nothing, simply return
547		}
548	<	catch (...) {
549	<	printf("ERROR: execute() received an unknown exception!\n");
550	<	QuitEmulator();
548	>	return status;
549	>	#endif
550	>	return COMPILE_FAILURE;
551	>	}
552	>
553	>	// CPU context to preserve on interrupt
554	>	sheepshaver_cpu::interrupt_context::interrupt_context(sheepshaver_cpu *_cpu, const char *_where)
555	>	{
556	>	#if SAFE_INTERRUPT_PPC >= 2
557	>	cpu = _cpu;
558	>	where = _where;
559	>
560	>	// Save interrupt context
561	>	memcpy(&gpr[0], &cpu->gpr(0), sizeof(gpr));
562	>	pc = cpu->pc();
563	>	lr = cpu->lr();
564	>	ctr = cpu->ctr();
565	>	cr = cpu->get_cr();
566	>	xer = cpu->get_xer();
567	>	#endif
568	>	}
569	>
570	>	sheepshaver_cpu::interrupt_context::~interrupt_context()
571	>	{
572	>	#if SAFE_INTERRUPT_PPC >= 2
573	>	// Check whether CPU context was preserved by interrupt
574	>	if (memcmp(&gpr[0], &cpu->gpr(0), sizeof(gpr)) != 0) {
575	>	printf("FATAL: %s: interrupt clobbers registers\n", where);
576	>	for (int i = 0; i < 32; i++)
577	>	if (gpr[i] != cpu->gpr(i))
578	>	printf(" r%d: %08x -> %08x\n", i, gpr[i], cpu->gpr(i));
579		}
580	+	if (pc != cpu->pc())
581	+	printf("FATAL: %s: interrupt clobbers PC\n", where);
582	+	if (lr != cpu->lr())
583	+	printf("FATAL: %s: interrupt clobbers LR\n", where);
584	+	if (ctr != cpu->ctr())
585	+	printf("FATAL: %s: interrupt clobbers CTR\n", where);
586	+	if (cr != cpu->get_cr())
587	+	printf("FATAL: %s: interrupt clobbers CR\n", where);
588	+	if (xer != cpu->get_xer())
589	+	printf("FATAL: %s: interrupt clobbers XER\n", where);
590	+	#endif
591		}
592
593		// Handle MacOS interrupt
594	<	void sheepshaver_cpu::interrupt(uint32 entry, sheepshaver_cpu *cpu)
594	>	void sheepshaver_cpu::interrupt(uint32 entry)
595		{
596	<	#if MULTICORE_CPU
597	<	// Initialize stack pointer from previous CPU running
598	<	gpr(1) = cpu->gpr(1);
599	<	#else
596	>	#if EMUL_TIME_STATS
597	>	ppc_interrupt_count++;
598	>	const clock_t interrupt_start = clock();
599	>	#endif
600	>
601	>	#if SAFE_INTERRUPT_PPC
602	>	static int depth = 0;
603	>	if (depth != 0)
604	>	printf("FATAL: sheepshaver_cpu::interrupt() called more than once: %d\n", depth);
605	>	depth++;
606	>	#endif
607	>
608		// Save program counters and branch registers
609		uint32 saved_pc = pc();
610		uint32 saved_lr = lr();
611		uint32 saved_ctr= ctr();
612	<	#endif
612	>	uint32 saved_sp = gpr(1);
613
614	<	// Create stack frame
615	<	gpr(1) -= 64;
614	>	// Initialize stack pointer to SheepShaver alternate stack base
615	>	gpr(1) = SignalStackBase() - 64;
616
617		// Build trampoline to return from interrupt
618	<	uint32 trampoline[] = { POWERPC_EMUL_OP | 1 };
618	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
619
620		// Prepare registers for nanokernel interrupt routine
621	<	kernel_data->v[0x004 >> 2] = gpr(1);
622	<	kernel_data->v[0x018 >> 2] = gpr(6);
621	>	kernel_data->v[0x004 >> 2] = htonl(gpr(1));
622	>	kernel_data->v[0x018 >> 2] = htonl(gpr(6));
623
624	<	gpr(6) = kernel_data->v[0x65c >> 2];
624	>	gpr(6) = ntohl(kernel_data->v[0x65c >> 2]);
625		assert(gpr(6) != 0);
626		WriteMacInt32(gpr(6) + 0x13c, gpr(7));
627		WriteMacInt32(gpr(6) + 0x144, gpr(8));
#	Line 303 | Line 632 | void sheepshaver_cpu::interrupt(uint32 e
632		WriteMacInt32(gpr(6) + 0x16c, gpr(13));
633
634		gpr(1)  = KernelDataAddr;
635	<	gpr(7)  = kernel_data->v[0x660 >> 2];
635	>	gpr(7)  = ntohl(kernel_data->v[0x660 >> 2]);
636		gpr(8)  = 0;
637	<	gpr(10) = (uint32)trampoline;
638	<	gpr(12) = (uint32)trampoline;
639	<	gpr(13) = cr().get();
637	>	gpr(10) = trampoline.addr();
638	>	gpr(12) = trampoline.addr();
639	>	gpr(13) = get_cr();
640
641		// rlwimi. r7,r7,8,0,0
642		uint32 result = op_ppc_rlwimi::apply(gpr(7), 8, 0x80000000, gpr(7));
#	Line 315 | Line 644 | void sheepshaver_cpu::interrupt(uint32 e
644		gpr(7) = result;
645
646		gpr(11) = 0xf072; // MSR (SRR1)
647	<	cr().set((gpr(11) & 0x0fff0000) | (cr().get() & ~0x0fff0000));
647	>	cr().set((gpr(11) & 0x0fff0000) | (get_cr() & ~0x0fff0000));
648
649		// Enter nanokernel
650		execute(entry);
651
323	–	// Cleanup stack
324	–	gpr(1) += 64;
325	–
326	–	#if !MULTICORE_CPU
652		// Restore program counters and branch registers
653		pc() = saved_pc;
654		lr() = saved_lr;
655		ctr()= saved_ctr;
656	+	gpr(1) = saved_sp;
657	+
658	+	#if EMUL_TIME_STATS
659	+	interrupt_time += (clock() - interrupt_start);
660	+	#endif
661	+
662	+	#if SAFE_INTERRUPT_PPC
663	+	depth--;
664		#endif
665		}
666
667		// Execute 68k routine
668		void sheepshaver_cpu::execute_68k(uint32 entry, M68kRegisters *r)
669		{
670	+	#if EMUL_TIME_STATS
671	+	exec68k_count++;
672	+	const clock_t exec68k_start = clock();
673	+	#endif
674	+
675		#if SAFE_EXEC_68K
676		if (ReadMacInt32(XLM_RUN_MODE) != MODE_EMUL_OP)
677		printf("FATAL: Execute68k() not called from EMUL_OP mode\n");
#	Line 343 | Line 681 | void sheepshaver_cpu::execute_68k(uint32
681		uint32 saved_pc = pc();
682		uint32 saved_lr = lr();
683		uint32 saved_ctr= ctr();
684	+	uint32 saved_cr = get_cr();
685
686		// Create MacOS stack frame
687	+	// FIXME: make sure MacOS doesn't expect PPC registers to live on top
688		uint32 sp = gpr(1);
689	<	gpr(1) -= 56 + 19*4 + 18*8;
689	>	gpr(1) -= 56;
690		WriteMacInt32(gpr(1), sp);
691
692		// Save PowerPC registers
693	<	memcpy(Mac2HostAddr(gpr(1)+56), &gpr(13), sizeof(uint32)*(32-13));
693	>	uint32 saved_GPRs[19];
694	>	memcpy(&saved_GPRs[0], &gpr(13), sizeof(uint32)*(32-13));
695		#if SAVE_FP_EXEC_68K
696	<	memcpy(Mac2HostAddr(gpr(1)+56+19*4), &fpr(14), sizeof(double)*(32-14));
696	>	double saved_FPRs[18];
697	>	memcpy(&saved_FPRs[0], &fpr(14), sizeof(double)*(32-14));
698		#endif
699
700		// Setup registers for 68k emulator
#	Line 366 | Line 708 | void sheepshaver_cpu::execute_68k(uint32
708		gpr(25) = ReadMacInt32(XLM_68K_R25);            // MSB of SR
709		gpr(26) = 0;
710		gpr(28) = 0;                                                            // VBR
711	<	gpr(29) = kernel_data->ed.v[0x74 >> 2];         // Pointer to opcode table
712	<	gpr(30) = kernel_data->ed.v[0x78 >> 2];         // Address of emulator
711	>	gpr(29) = ntohl(kernel_data->ed.v[0x74 >> 2]);          // Pointer to opcode table
712	>	gpr(30) = ntohl(kernel_data->ed.v[0x78 >> 2]);          // Address of emulator
713		gpr(31) = KernelDataAddr + 0x1000;
714
715		// Push return address (points to EXEC_RETURN opcode) on stack
#	Line 399 | Line 741 | void sheepshaver_cpu::execute_68k(uint32
741		r->a[i] = gpr(16 + i);
742
743		// Restore PowerPC registers
744	<	memcpy(&gpr(13), Mac2HostAddr(gpr(1)+56), sizeof(uint32)*(32-13));
744	>	memcpy(&gpr(13), &saved_GPRs[0], sizeof(uint32)*(32-13));
745		#if SAVE_FP_EXEC_68K
746	<	memcpy(&fpr(14), Mac2HostAddr(gpr(1)+56+19*4), sizeof(double)*(32-14));
746	>	memcpy(&fpr(14), &saved_FPRs[0], sizeof(double)*(32-14));
747		#endif
748
749		// Cleanup stack
750	<	gpr(1) += 56 + 19*4 + 18*8;
750	>	gpr(1) += 56;
751
752		// Restore program counters and branch registers
753		pc() = saved_pc;
754		lr() = saved_lr;
755		ctr()= saved_ctr;
756	+	set_cr(saved_cr);
757	+
758	+	#if EMUL_TIME_STATS
759	+	exec68k_time += (clock() - exec68k_start);
760	+	#endif
761		}
762
763		// Call MacOS PPC code
764		uint32 sheepshaver_cpu::execute_macos_code(uint32 tvect, int nargs, uint32 const *args)
765		{
766	+	#if EMUL_TIME_STATS
767	+	macos_exec_count++;
768	+	const clock_t macos_exec_start = clock();
769	+	#endif
770	+
771		// Save program counters and branch registers
772		uint32 saved_pc = pc();
773		uint32 saved_lr = lr();
774		uint32 saved_ctr= ctr();
775
776		// Build trampoline with EXEC_RETURN
777	<	uint32 trampoline[] = { POWERPC_EMUL_OP | 1 };
778	<	lr() = (uint32)trampoline;
777	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
778	>	lr() = trampoline.addr();
779
780		gpr(1) -= 64;                                                           // Create stack frame
781		uint32 proc = ReadMacInt32(tvect);                      // Get routine address
#	Line 454 | Line 806 | uint32 sheepshaver_cpu::execute_macos_co
806		lr() = saved_lr;
807		ctr()= saved_ctr;
808
809	+	#if EMUL_TIME_STATS
810	+	macos_exec_time += (clock() - macos_exec_start);
811	+	#endif
812	+
813		return retval;
814		}
815
#	Line 462 | Line 818 | inline void sheepshaver_cpu::execute_ppc
818		{
819		// Save branch registers
820		uint32 saved_lr = lr();
465	–	uint32 saved_ctr= ctr();
821
822	<	const uint32 trampoline[] = { POWERPC_EMUL_OP | 1 };
822	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
823	>	WriteMacInt32(trampoline.addr(), POWERPC_EXEC_RETURN);
824	>	lr() = trampoline.addr();
825
469	–	lr() = (uint32)trampoline;
470	–	ctr()= entry;
826		execute(entry);
827
828		// Restore branch registers
829		lr() = saved_lr;
475	–	ctr()= saved_ctr;
830		}
831
832		// Resource Manager thunk
479	–	extern "C" void check_load_invoc(uint32 type, int16 id, uint16 **h);
480	–
833		inline void sheepshaver_cpu::get_resource(uint32 old_get_resource)
834		{
835		uint32 type = gpr(3);
#	Line 488 | Line 840 | inline void sheepshaver_cpu::get_resourc
840
841		// Call old routine
842		execute_ppc(old_get_resource);
491	–	uint16 **handle = (uint16 **)gpr(3);
843
844		// Call CheckLoad()
845	+	uint32 handle = gpr(3);
846		check_load_invoc(type, id, handle);
847	<	gpr(3) = (uint32)handle;
847	>	gpr(3) = handle;
848
849		// Cleanup stack
850		gpr(1) += 56;
#	Line 503 | Line 855 | inline void sheepshaver_cpu::get_resourc
855		*              SheepShaver CPU engine interface
856		**/
857
858	<	static sheepshaver_cpu *main_cpu = NULL;                // CPU emulator to handle usual control flow
859	<	static sheepshaver_cpu *interrupt_cpu = NULL;   // CPU emulator to handle interrupts
508	<	static sheepshaver_cpu *current_cpu = NULL;             // Current CPU emulator context
858	>	// PowerPC CPU emulator
859	>	static sheepshaver_cpu *ppc_cpu = NULL;
860
861	<	static inline void cpu_push(sheepshaver_cpu *new_cpu)
861	>	void FlushCodeCache(uintptr start, uintptr end)
862		{
863	<	#if MULTICORE_CPU
864	<	current_cpu = new_cpu;
514	<	#endif
515	<	}
516	<
517	<	static inline void cpu_pop()
518	<	{
519	<	#if MULTICORE_CPU
520	<	current_cpu = main_cpu;
521	<	#endif
863	>	D(bug("FlushCodeCache(%08x, %08x)\n", start, end));
864	>	ppc_cpu->invalidate_cache_range(start, end);
865		}
866
867		// Dump PPC registers
868		static void dump_registers(void)
869		{
870	<	current_cpu->dump_registers();
870	>	ppc_cpu->dump_registers();
871		}
872
873		// Dump log
874		static void dump_log(void)
875		{
876	<	current_cpu->dump_log();
876	>	ppc_cpu->dump_log();
877		}
878
879		/*
880		*  Initialize CPU emulation
881		*/
882
883	<	static sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
883	>	sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
884		{
885		#if ENABLE_VOSF
886		// Handle screen fault
#	Line 552 | Line 895 | static sigsegv_return_t sigsegv_handler(
895		if ((addr - ROM_BASE) < ROM_SIZE)
896		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
897
898	<	// Ignore all other faults, if requested
899	<	if (PrefsFindBool("ignoresegv"))
900	<	return SIGSEGV_RETURN_FAILURE;
898	>	// Get program counter of target CPU
899	>	sheepshaver_cpu * const cpu = ppc_cpu;
900	>	const uint32 pc = cpu->pc();
901	>
902	>	// Fault in Mac ROM or RAM?
903	>	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));
904	>	if (mac_fault) {
905	>
906	>	// "VM settings" during MacOS 8 installation
907	>	if (pc == ROM_BASE + 0x488160 && cpu->gpr(20) == 0xf8000000)
908	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
909	>
910	>	// MacOS 8.5 installation
911	>	else if (pc == ROM_BASE + 0x488140 && cpu->gpr(16) == 0xf8000000)
912	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
913	>
914	>	// MacOS 8 serial drivers on startup
915	>	else if (pc == ROM_BASE + 0x48e080 && (cpu->gpr(8) == 0xf3012002 || cpu->gpr(8) == 0xf3012000))
916	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
917	>
918	>	// MacOS 8.1 serial drivers on startup
919	>	else if (pc == ROM_BASE + 0x48c5e0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
920	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
921	>	else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
922	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
923	>
924	>	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
925	>	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(16) == 0xf3012002 || cpu->gpr(16) == 0xf3012000))
926	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
927	>	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
928	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
929	>
930	>	// Ignore writes to the zero page
931	>	else if ((uint32)(addr - SheepMem::ZeroPage()) < (uint32)SheepMem::PageSize())
932	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
933	>
934	>	// Ignore all other faults, if requested
935	>	if (PrefsFindBool("ignoresegv"))
936	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
937	>	}
938		#else
939		#error "FIXME: You don't have the capability to skip instruction within signal handlers"
940		#endif
#	Line 562 | Line 942 | static sigsegv_return_t sigsegv_handler(
942		printf("SIGSEGV\n");
943		printf("  pc %p\n", fault_instruction);
944		printf("  ea %p\n", fault_address);
565	–	printf(" cpu %s\n", current_cpu == main_cpu ? "main" : "interrupts");
945		dump_registers();
946	<	current_cpu->dump_log();
946	>	ppc_cpu->dump_log();
947		enter_mon();
948		QuitEmulator();
949
#	Line 574 | Line 953 | static sigsegv_return_t sigsegv_handler(
953		void init_emul_ppc(void)
954		{
955		// Initialize main CPU emulator
956	<	main_cpu = new sheepshaver_cpu();
957	<	main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
956	>	ppc_cpu = new sheepshaver_cpu();
957	>	ppc_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
958	>	ppc_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
959		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
960
581	–	#if MULTICORE_CPU
582	–	// Initialize alternate CPU emulator to handle interrupts
583	–	interrupt_cpu = new sheepshaver_cpu();
584	–	#endif
585	–
586	–	// Install the handler for SIGSEGV
587	–	sigsegv_install_handler(sigsegv_handler);
588	–
961		#if ENABLE_MON
962		// Install "regs" command in cxmon
963		mon_add_command("regs", dump_registers, "regs                     Dump PowerPC registers\n");
964		mon_add_command("log", dump_log, "log                      Dump PowerPC emulation log\n");
965		#endif
966	+
967	+	#if EMUL_TIME_STATS
968	+	emul_start_time = clock();
969	+	#endif
970	+	}
971	+
972	+	/*
973	+	*  Deinitialize emulation
974	+	*/
975	+
976	+	void exit_emul_ppc(void)
977	+	{
978	+	#if EMUL_TIME_STATS
979	+	clock_t emul_end_time = clock();
980	+
981	+	printf("### Statistics for SheepShaver emulation parts\n");
982	+	const clock_t emul_time = emul_end_time - emul_start_time;
983	+	printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
984	+	printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
985	+	(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
986	+	printf("Total ppc interrupt count: %d (%2.1f %%)\n", ppc_interrupt_count,
987	+	(double(ppc_interrupt_count) * 100.0) / double(interrupt_count));
988	+
989	+	#define PRINT_STATS(LABEL, VAR_PREFIX) do {                                                             \
990	+	printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count);             \
991	+	printf("Total " LABEL " time  : %.1f sec (%.1f%%)\n",                   \
992	+	double(VAR_PREFIX##_time) / double(CLOCKS_PER_SEC),          \
993	+	100.0 * double(VAR_PREFIX##_time) / double(emul_time));      \
994	+	} while (0)
995	+
996	+	PRINT_STATS("Execute68k[Trap] execution", exec68k);
997	+	PRINT_STATS("NativeOp execution", native_exec);
998	+	PRINT_STATS("MacOS routine execution", macos_exec);
999	+
1000	+	#undef PRINT_STATS
1001	+	printf("\n");
1002	+	#endif
1003	+
1004	+	delete ppc_cpu;
1005	+	}
1006	+
1007	+	#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
1008	+	// Initialize EmulOp trampolines
1009	+	void init_emul_op_trampolines(basic_dyngen & dg)
1010	+	{
1011	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
1012	+	func_t func;
1013	+
1014	+	// EmulOp
1015	+	emul_op_trampoline = dg.gen_start();
1016	+	func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
1017	+	dg.gen_invoke_CPU_T0(func);
1018	+	dg.gen_exec_return();
1019	+	dg.gen_end();
1020	+
1021	+	// NativeOp
1022	+	native_op_trampoline = dg.gen_start();
1023	+	func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
1024	+	dg.gen_invoke_CPU_T0(func);
1025	+	dg.gen_exec_return();
1026	+	dg.gen_end();
1027	+
1028	+	D(bug("EmulOp trampoline:   %p\n", emul_op_trampoline));
1029	+	D(bug("NativeOp trampoline: %p\n", native_op_trampoline));
1030		}
1031	+	#endif
1032
1033		/*
1034		*  Emulation loop
#	Line 599 | Line 1036 | void init_emul_ppc(void)
1036
1037		void emul_ppc(uint32 entry)
1038		{
1039	<	current_cpu = main_cpu;
1040	<	current_cpu->start_log();
1041	<	current_cpu->execute(entry);
1039	>	#if 0
1040	>	ppc_cpu->start_log();
1041	>	#endif
1042	>	// start emulation loop and enable code translation or caching
1043	>	ppc_cpu->execute(entry);
1044		}
1045
1046		/*
1047		*  Handle PowerPC interrupt
1048		*/
1049
611	–	// Atomic operations
612	–	extern int atomic_add(int *var, int v);
613	–	extern int atomic_and(int *var, int v);
614	–	extern int atomic_or(int *var, int v);
615	–
1050		void TriggerInterrupt(void)
1051		{
1052		#if 0
1053		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1054		#else
1055	<	SPCFLAGS_SET( SPCFLAG_INT );
1055	>	// Trigger interrupt to main cpu only
1056	>	if (ppc_cpu)
1057	>	ppc_cpu->trigger_interrupt();
1058		#endif
1059		}
1060
1061	<	static void HandleInterrupt(void)
1061	>	void sheepshaver_cpu::handle_interrupt(void)
1062		{
1063	+	#ifdef USE_SDL_VIDEO
1064	+	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1065	+	SDL_PumpEvents();
1066	+	#endif
1067	+
1068		// Do nothing if interrupts are disabled
1069		if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
1070		return;
1071
1072	<	// Do nothing if there is no interrupt pending
1073	<	if (InterruptFlags == 0)
1074	<	return;
1072	>	// Current interrupt nest level
1073	>	static int interrupt_depth = 0;
1074	>	++interrupt_depth;
1075	>	#if EMUL_TIME_STATS
1076	>	interrupt_count++;
1077	>	#endif
1078
1079		// Disable MacOS stack sniffer
1080		WriteMacInt32(0x110, 0);
#	Line 639 | Line 1083 | static void HandleInterrupt(void)
1083		switch (ReadMacInt32(XLM_RUN_MODE)) {
1084		case MODE_68K:
1085		// 68k emulator active, trigger 68k interrupt level 1
642	–	assert(current_cpu == main_cpu);
1086		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1087	<	main_cpu->set_cr(main_cpu->get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
1087	>	set_cr(get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
1088		break;
1089
1090		#if INTERRUPTS_IN_NATIVE_MODE
1091		case MODE_NATIVE:
1092		// 68k emulator inactive, in nanokernel?
1093	<	assert(current_cpu == main_cpu);
1094	<	if (main_cpu->gpr(1) != KernelDataAddr) {
1093	>	if (gpr(1) != KernelDataAddr && interrupt_depth == 1) {
1094	>	interrupt_context ctx(this, "PowerPC mode");
1095	>
1096		// Prepare for 68k interrupt level 1
1097		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1098		WriteMacInt32(tswap32(kernel_data->v[0x658 >> 2]) + 0xdc,
#	Line 657 | Line 1101 | static void HandleInterrupt(void)
1101
1102		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1103		DisableInterrupt();
660	–	cpu_push(interrupt_cpu);
1104		if (ROMType == ROMTYPE_NEWWORLD)
1105	<	current_cpu->interrupt(ROM_BASE + 0x312b1c, main_cpu);
1105	>	ppc_cpu->interrupt(ROM_BASE + 0x312b1c);
1106		else
1107	<	current_cpu->interrupt(ROM_BASE + 0x312a3c, main_cpu);
665	<	cpu_pop();
1107	>	ppc_cpu->interrupt(ROM_BASE + 0x312a3c);
1108		}
1109		break;
1110		#endif
#	Line 671 | Line 1113 | static void HandleInterrupt(void)
1113		case MODE_EMUL_OP:
1114		// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
1115		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1116	+	interrupt_context ctx(this, "68k mode");
1117	+	#if EMUL_TIME_STATS
1118	+	const clock_t interrupt_start = clock();
1119	+	#endif
1120		#if 1
1121		// Execute full 68k interrupt routine
1122		M68kRegisters r;
#	Line 692 | Line 1138 | static void HandleInterrupt(void)
1138		if (InterruptFlags & INTFLAG_VIA) {
1139		ClearInterruptFlag(INTFLAG_VIA);
1140		ADBInterrupt();
1141	<	ExecutePPC(VideoVBL);
1141	>	ExecuteNative(NATIVE_VIDEO_VBL);
1142		}
1143		}
1144		#endif
1145	+	#if EMUL_TIME_STATS
1146	+	interrupt_time += (clock() - interrupt_start);
1147	+	#endif
1148		}
1149		break;
1150		#endif
1151		}
703	–	}
704	–
705	–	/*
706	–	*  Execute NATIVE_OP opcode (called by PowerPC emulator)
707	–	*/
1152
1153	<	#define POWERPC_NATIVE_OP_INIT(LR, OP) \
1154	<	tswap32(POWERPC_EMUL_OP | ((LR) << 11) | (((uint32)OP) << 6) | 2)
1155	<
712	<	// FIXME: Make sure 32-bit relocations are used
713	<	const uint32 NativeOpTable[NATIVE_OP_MAX] = {
714	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_PATCH_NAME_REGISTRY),
715	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_INSTALL_ACCEL),
716	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_VBL),
717	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_DO_DRIVER_IO),
718	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_IRQ),
719	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_INIT),
720	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_TERM),
721	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_OPEN),
722	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_CLOSE),
723	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_WPUT),
724	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_RSRV),
725	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_NOTHING),
726	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_OPEN),
727	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_PRIME_IN),
728	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_PRIME_OUT),
729	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_CONTROL),
730	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_STATUS),
731	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_CLOSE),
732	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_RESOURCE),
733	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_1_RESOURCE),
734	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_IND_RESOURCE),
735	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_1_IND_RESOURCE),
736	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_R_GET_RESOURCE),
737	<	POWERPC_NATIVE_OP_INIT(0, NATIVE_DISABLE_INTERRUPT),
738	<	POWERPC_NATIVE_OP_INIT(0, NATIVE_ENABLE_INTERRUPT),
739	<	};
1153	>	// We are done with this interrupt
1154	>	--interrupt_depth;
1155	>	}
1156
1157		static void get_resource(void);
1158		static void get_1_resource(void);
#	Line 744 | Line 1160 | static void get_ind_resource(void);
1160		static void get_1_ind_resource(void);
1161		static void r_get_resource(void);
1162
1163	<	#define GPR(REG) current_cpu->gpr(REG)
1164	<
749	<	static void NativeOp(int selector)
1163	>	// Execute NATIVE_OP routine
1164	>	void sheepshaver_cpu::execute_native_op(uint32 selector)
1165		{
1166	+	#if EMUL_TIME_STATS
1167	+	native_exec_count++;
1168	+	const clock_t native_exec_start = clock();
1169	+	#endif
1170	+
1171		switch (selector) {
1172		case NATIVE_PATCH_NAME_REGISTRY:
1173		DoPatchNameRegistry();
#	Line 759 | Line 1179 | static void NativeOp(int selector)
1179		VideoVBL();
1180		break;
1181		case NATIVE_VIDEO_DO_DRIVER_IO:
1182	<	GPR(3) = (int32)(int16)VideoDoDriverIO((void *)GPR(3), (void *)GPR(4),
1183	<	(void *)GPR(5), GPR(6), GPR(7));
1182	>	gpr(3) = (int32)(int16)VideoDoDriverIO((void *)gpr(3), (void *)gpr(4),
1183	>	(void *)gpr(5), gpr(6), gpr(7));
1184		break;
1185	<	case NATIVE_GET_RESOURCE:
1186	<	get_resource();
1185	>	#ifdef WORDS_BIGENDIAN
1186	>	case NATIVE_ETHER_IRQ:
1187	>	EtherIRQ();
1188		break;
1189	<	case NATIVE_GET_1_RESOURCE:
1190	<	get_1_resource();
1189	>	case NATIVE_ETHER_INIT:
1190	>	gpr(3) = InitStreamModule((void *)gpr(3));
1191		break;
1192	<	case NATIVE_GET_IND_RESOURCE:
1193	<	get_ind_resource();
1192	>	case NATIVE_ETHER_TERM:
1193	>	TerminateStreamModule();
1194		break;
1195	<	case NATIVE_GET_1_IND_RESOURCE:
1196	<	get_1_ind_resource();
1195	>	case NATIVE_ETHER_OPEN:
1196	>	gpr(3) = ether_open((queue_t *)gpr(3), (void *)gpr(4), gpr(5), gpr(6), (void*)gpr(7));
1197	>	break;
1198	>	case NATIVE_ETHER_CLOSE:
1199	>	gpr(3) = ether_close((queue_t *)gpr(3), gpr(4), (void *)gpr(5));
1200	>	break;
1201	>	case NATIVE_ETHER_WPUT:
1202	>	gpr(3) = ether_wput((queue_t *)gpr(3), (mblk_t *)gpr(4));
1203	>	break;
1204	>	case NATIVE_ETHER_RSRV:
1205	>	gpr(3) = ether_rsrv((queue_t *)gpr(3));
1206	>	break;
1207	>	#else
1208	>	case NATIVE_ETHER_INIT:
1209	>	// FIXME: needs more complicated thunks
1210	>	gpr(3) = false;
1211	>	break;
1212	>	#endif
1213	>	case NATIVE_SYNC_HOOK:
1214	>	gpr(3) = NQD_sync_hook(gpr(3));
1215	>	break;
1216	>	case NATIVE_BITBLT_HOOK:
1217	>	gpr(3) = NQD_bitblt_hook(gpr(3));
1218	>	break;
1219	>	case NATIVE_BITBLT:
1220	>	NQD_bitblt(gpr(3));
1221		break;
1222	<	case NATIVE_R_GET_RESOURCE:
1223	<	r_get_resource();
1222	>	case NATIVE_FILLRECT_HOOK:
1223	>	gpr(3) = NQD_fillrect_hook(gpr(3));
1224	>	break;
1225	>	case NATIVE_INVRECT:
1226	>	NQD_invrect(gpr(3));
1227	>	break;
1228	>	case NATIVE_FILLRECT:
1229	>	NQD_fillrect(gpr(3));
1230		break;
1231		case NATIVE_SERIAL_NOTHING:
1232		case NATIVE_SERIAL_OPEN:
#	Line 794 | Line 1245 | static void NativeOp(int selector)
1245		SerialStatus,
1246		SerialClose
1247		};
1248	<	GPR(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](GPR(3), GPR(4));
1248	>	gpr(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](gpr(3), gpr(4));
1249	>	break;
1250	>	}
1251	>	case NATIVE_GET_RESOURCE:
1252	>	case NATIVE_GET_1_RESOURCE:
1253	>	case NATIVE_GET_IND_RESOURCE:
1254	>	case NATIVE_GET_1_IND_RESOURCE:
1255	>	case NATIVE_R_GET_RESOURCE: {
1256	>	typedef void (*GetResourceCallback)(void);
1257	>	static const GetResourceCallback get_resource_callbacks[] = {
1258	>	::get_resource,
1259	>	::get_1_resource,
1260	>	::get_ind_resource,
1261	>	::get_1_ind_resource,
1262	>	::r_get_resource
1263	>	};
1264	>	get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1265		break;
1266		}
1267	<	case NATIVE_DISABLE_INTERRUPT:
1268	<	DisableInterrupt();
1267	>	case NATIVE_MAKE_EXECUTABLE:
1268	>	MakeExecutable(0, (void *)gpr(4), gpr(5));
1269		break;
1270	<	case NATIVE_ENABLE_INTERRUPT:
1271	<	EnableInterrupt();
1270	>	case NATIVE_CHECK_LOAD_INVOC:
1271	>	check_load_invoc(gpr(3), gpr(4), gpr(5));
1272		break;
1273		default:
1274		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
1275		QuitEmulator();
1276		break;
1277		}
811	–	}
1278
1279	<	/*
1280	<	*  Execute native subroutine (LR must contain return address)
1281	<	*/
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);
1279	>	#if EMUL_TIME_STATS
1280	>	native_exec_time += (clock() - native_exec_start);
1281	>	#endif
1282		}
1283
1284		/*
#	Line 832 | Line 1289 | void ExecuteNative(int selector)
1289
1290		void Execute68k(uint32 pc, M68kRegisters *r)
1291		{
1292	<	current_cpu->execute_68k(pc, r);
1292	>	ppc_cpu->execute_68k(pc, r);
1293		}
1294
1295		/*
#	Line 842 | Line 1299 | void Execute68k(uint32 pc, M68kRegisters
1299
1300		void Execute68kTrap(uint16 trap, M68kRegisters *r)
1301		{
1302	<	uint16 proc[2] = {trap, M68K_RTS};
1303	<	Execute68k((uint32)proc, r);
1302	>	SheepVar proc_var(4);
1303	>	uint32 proc = proc_var.addr();
1304	>	WriteMacInt16(proc, trap);
1305	>	WriteMacInt16(proc + 2, M68K_RTS);
1306	>	Execute68k(proc, r);
1307		}
1308
1309		/*
#	Line 852 | Line 1312 | void Execute68kTrap(uint16 trap, M68kReg
1312
1313		uint32 call_macos(uint32 tvect)
1314		{
1315	<	return current_cpu->execute_macos_code(tvect, 0, NULL);
1315	>	return ppc_cpu->execute_macos_code(tvect, 0, NULL);
1316		}
1317
1318		uint32 call_macos1(uint32 tvect, uint32 arg1)
1319		{
1320		const uint32 args[] = { arg1 };
1321	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1321	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1322		}
1323
1324		uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2)
1325		{
1326		const uint32 args[] = { arg1, arg2 };
1327	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1327	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1328		}
1329
1330		uint32 call_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3)
1331		{
1332		const uint32 args[] = { arg1, arg2, arg3 };
1333	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1333	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1334		}
1335
1336		uint32 call_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4)
1337		{
1338		const uint32 args[] = { arg1, arg2, arg3, arg4 };
1339	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1339	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1340		}
1341
1342		uint32 call_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5)
1343		{
1344		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5 };
1345	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1345	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1346		}
1347
1348		uint32 call_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6)
1349		{
1350		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6 };
1351	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1351	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1352		}
1353
1354		uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7)
1355		{
1356		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 };
1357	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
898	<	}
899	<
900	<	/*
901	<	*  Atomic operations
902	<	*/
903	<
904	<	int atomic_add(int *var, int v)
905	<	{
906	<	int ret = *var;
907	<	*var += v;
908	<	return ret;
909	<	}
910	<
911	<	int atomic_and(int *var, int v)
912	<	{
913	<	int ret = *var;
914	<	*var &= v;
915	<	return ret;
916	<	}
917	<
918	<	int atomic_or(int *var, int v)
919	<	{
920	<	int ret = *var;
921	<	*var |= v;
922	<	return ret;
1357	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1358		}
1359
1360		/*
#	Line 928 | Line 1363 | int atomic_or(int *var, int v)
1363
1364		void get_resource(void)
1365		{
1366	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1366	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1367		}
1368
1369		void get_1_resource(void)
1370		{
1371	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1371	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1372		}
1373
1374		void get_ind_resource(void)
1375		{
1376	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1376	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1377		}
1378
1379		void get_1_ind_resource(void)
1380		{
1381	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1381	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1382		}
1383
1384		void r_get_resource(void)
1385		{
1386	<	current_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1386	>	ppc_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1387		}

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