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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 1.43 by gbeauche, 2004-05-31T10:08:31Z

#	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	<	// Enable multicore (main/interrupts) cpu emulation?
79	<	#define MULTICORE_CPU 0
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 interrupt routine safety checks?
88	>	#define SAFE_INTERRUPT_PPC 1
89
90		// Enable Execute68k() safety checks?
91		#define SAFE_EXEC_68K 1
#	Line 71 | Line 99 | static void enter_mon(void)
99		// Interrupts in native mode?
100		#define INTERRUPTS_IN_NATIVE_MODE 1
101
102	<	// 68k Emulator Data
103	<	struct EmulatorData {
76	<	uint32  v[0x400];
77	<	};
78	<
79	<	// Kernel Data
80	<	struct KernelData {
81	<	uint32  v[0x400];
82	<	EmulatorData ed;
83	<	};
102	>	// Enable native EMUL_OPs to be run without a mode switch
103	>	#define ENABLE_NATIVE_EMUL_OP 1
104
105		// Pointer to Kernel Data
106	<	static KernelData * const kernel_data = (KernelData *)0x68ffe000;
106	>	static KernelData * const kernel_data = (KernelData *)KERNEL_DATA_BASE;
107	>
108	>	// SIGSEGV handler
109	>	static sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
110	>
111	>	#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
112	>	// Special trampolines for EmulOp and NativeOp
113	>	static uint8 *emul_op_trampoline;
114	>	static uint8 *native_op_trampoline;
115	>	#endif
116	>
117	>	// JIT Compiler enabled?
118	>	static inline bool enable_jit_p()
119	>	{
120	>	return PrefsFindBool("jit");
121	>	}
122
123
124		/**
125		*              PowerPC emulator glue with special 'sheep' opcodes
126		**/
127
128	<	struct sheepshaver_exec_return { };
128	>	enum {
129	>	PPC_I(SHEEP) = PPC_I(MAX),
130	>	PPC_I(SHEEP_MAX)
131	>	};
132
133		class sheepshaver_cpu
134		: public powerpc_cpu
#	Line 98 | Line 136 | class sheepshaver_cpu
136		void init_decoder();
137		void execute_sheep(uint32 opcode);
138
139	+	// Filter out EMUL_OP routines that only call native code
140	+	bool filter_execute_emul_op(uint32 emul_op);
141	+
142	+	// "Native" EMUL_OP routines
143	+	void execute_emul_op_microseconds();
144	+	void execute_emul_op_idle_time_1();
145	+	void execute_emul_op_idle_time_2();
146	+
147	+	// CPU context to preserve on interrupt
148	+	class interrupt_context {
149	+	uint32 gpr[32];
150	+	uint32 pc;
151	+	uint32 lr;
152	+	uint32 ctr;
153	+	uint32 cr;
154	+	uint32 xer;
155	+	sheepshaver_cpu *cpu;
156	+	const char *where;
157	+	public:
158	+	interrupt_context(sheepshaver_cpu *_cpu, const char *_where);
159	+	~interrupt_context();
160	+	};
161	+
162		public:
163
164	<	sheepshaver_cpu()
165	<	: powerpc_cpu()
105	<	{ init_decoder(); }
164	>	// Constructor
165	>	sheepshaver_cpu();
166
167	<	// Condition Register accessors
167	>	// CR & XER accessors
168		uint32 get_cr() const           { return cr().get(); }
169		void set_cr(uint32 v)           { cr().set(v); }
170	+	uint32 get_xer() const          { return xer().get(); }
171	+	void set_xer(uint32 v)          { xer().set(v); }
172	+
173	+	// Execute NATIVE_OP routine
174	+	void execute_native_op(uint32 native_op);
175
176	<	// Execution loop
177	<	void execute(uint32 pc);
176	>	// Execute EMUL_OP routine
177	>	void execute_emul_op(uint32 emul_op);
178
179		// Execute 68k routine
180		void execute_68k(uint32 entry, M68kRegisters *r);
#	Line 120 | Line 185 | public:
185		// Execute MacOS/PPC code
186		uint32 execute_macos_code(uint32 tvect, int nargs, uint32 const *args);
187
188	+	// Compile one instruction
189	+	virtual int compile1(codegen_context_t & cg_context);
190	+
191		// Resource manager thunk
192		void get_resource(uint32 old_get_resource);
193
194		// Handle MacOS interrupt
195	<	void interrupt(uint32 entry, sheepshaver_cpu *cpu);
195	>	void interrupt(uint32 entry);
196	>	void handle_interrupt();
197
198	<	// spcflags for interrupts handling
199	<	static uint32 spcflags;
131	<
132	<	// Lazy memory allocator (one item at a time)
133	<	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);
198	>	// Make sure the SIGSEGV handler can access CPU registers
199	>	friend sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
200		};
201
202	<	uint32 sheepshaver_cpu::spcflags = 0;
203	<	lazy_allocator< sheepshaver_cpu > allocator_helper< sheepshaver_cpu, lazy_allocator >::allocator;
202	>	// Memory allocator returning areas aligned on 16-byte boundaries
203	>	void *operator new(size_t size)
204	>	{
205	>	void *p;
206
207	<	void sheepshaver_cpu::init_decoder()
207	>	#if defined(HAVE_POSIX_MEMALIGN)
208	>	if (posix_memalign(&p, 16, size) != 0)
209	>	throw std::bad_alloc();
210	>	#elif defined(HAVE_MEMALIGN)
211	>	p = memalign(16, size);
212	>	#elif defined(HAVE_VALLOC)
213	>	p = valloc(size); // page-aligned!
214	>	#else
215	>	/* XXX: handle padding ourselves */
216	>	p = malloc(size);
217	>	#endif
218	>
219	>	return p;
220	>	}
221	>
222	>	void operator delete(void *p)
223		{
224	<	#ifndef PPC_NO_STATIC_II_INDEX_TABLE
225	<	static bool initialized = false;
226	<	if (initialized)
227	<	return;
228	<	initialized = true;
224	>	#if defined(HAVE_MEMALIGN) || defined(HAVE_VALLOC)
225	>	#if defined(__GLIBC__)
226	>	// this is known to work only with GNU libc
227	>	free(p);
228	>	#endif
229	>	#else
230	>	free(p);
231		#endif
232	+	}
233	+
234	+	sheepshaver_cpu::sheepshaver_cpu()
235	+	: powerpc_cpu(enable_jit_p())
236	+	{
237	+	init_decoder();
238	+	}
239
240	+	void sheepshaver_cpu::init_decoder()
241	+	{
242		static const instr_info_t sheep_ii_table[] = {
243		{ "sheep",
244	<	(execute_fn)&sheepshaver_cpu::execute_sheep,
244	>	(execute_pmf)&sheepshaver_cpu::execute_sheep,
245		NULL,
246	<	D_form, 6, 0, CFLOW_TRAP
246	>	PPC_I(SHEEP),
247	>	D_form, 6, 0, CFLOW_JUMP | CFLOW_TRAP
248		}
249		};
250
#	Line 168 | Line 257 | void sheepshaver_cpu::init_decoder()
257		}
258		}
259
171	–	// Forward declaration for native opcode handler
172	–	static void NativeOp(int selector);
173	–
260		/*              NativeOp instruction format:
261	<	+------------+--------------------------+--+----------+------------+
262	<	|      6     |                          |FN|    OP    |      2     |
263	<	+------------+--------------------------+--+----------+------------+
264	<	0         5 |6                       19 20 21      25 26        31
261	>	+------------+-------------------------+--+-----------+------------+
262	>	|      6     |                         |FN|    OP     |      2     |
263	>	+------------+-------------------------+--+-----------+------------+
264	>	0         5 |6                      18 19 20      25 26        31
265		*/
266
267	<	typedef bit_field< 20, 20 > FN_field;
268	<	typedef bit_field< 21, 25 > NATIVE_OP_field;
267	>	typedef bit_field< 19, 19 > FN_field;
268	>	typedef bit_field< 20, 25 > NATIVE_OP_field;
269		typedef bit_field< 26, 31 > EMUL_OP_field;
270
271	+	// "Native" EMUL_OP routines
272	+	#define GPR_A(REG) gpr(16 + (REG))
273	+	#define GPR_D(REG) gpr( 8 + (REG))
274	+
275	+	void sheepshaver_cpu::execute_emul_op_microseconds()
276	+	{
277	+	Microseconds(GPR_A(0), GPR_D(0));
278	+	}
279	+
280	+	void sheepshaver_cpu::execute_emul_op_idle_time_1()
281	+	{
282	+	// Sleep if no events pending
283	+	if (ReadMacInt32(0x14c) == 0)
284	+	Delay_usec(16667);
285	+	GPR_A(0) = ReadMacInt32(0x2b6);
286	+	}
287	+
288	+	void sheepshaver_cpu::execute_emul_op_idle_time_2()
289	+	{
290	+	// Sleep if no events pending
291	+	if (ReadMacInt32(0x14c) == 0)
292	+	Delay_usec(16667);
293	+	GPR_D(0) = (uint32)-2;
294	+	}
295	+
296	+	// Filter out EMUL_OP routines that only call native code
297	+	bool sheepshaver_cpu::filter_execute_emul_op(uint32 emul_op)
298	+	{
299	+	switch (emul_op) {
300	+	case OP_MICROSECONDS:
301	+	execute_emul_op_microseconds();
302	+	return true;
303	+	case OP_IDLE_TIME:
304	+	execute_emul_op_idle_time_1();
305	+	return true;
306	+	case OP_IDLE_TIME_2:
307	+	execute_emul_op_idle_time_2();
308	+	return true;
309	+	}
310	+	return false;
311	+	}
312	+
313	+	// Execute EMUL_OP routine
314	+	void sheepshaver_cpu::execute_emul_op(uint32 emul_op)
315	+	{
316	+	#if ENABLE_NATIVE_EMUL_OP
317	+	// First, filter out EMUL_OPs that can be executed without a mode switch
318	+	if (filter_execute_emul_op(emul_op))
319	+	return;
320	+	#endif
321	+
322	+	M68kRegisters r68;
323	+	WriteMacInt32(XLM_68K_R25, gpr(25));
324	+	WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
325	+	for (int i = 0; i < 8; i++)
326	+	r68.d[i] = gpr(8 + i);
327	+	for (int i = 0; i < 7; i++)
328	+	r68.a[i] = gpr(16 + i);
329	+	r68.a[7] = gpr(1);
330	+	uint32 saved_cr = get_cr() & CR_field<2>::mask();
331	+	uint32 saved_xer = get_xer();
332	+	EmulOp(&r68, gpr(24), emul_op);
333	+	set_cr(saved_cr);
334	+	set_xer(saved_xer);
335	+	for (int i = 0; i < 8; i++)
336	+	gpr(8 + i) = r68.d[i];
337	+	for (int i = 0; i < 7; i++)
338	+	gpr(16 + i) = r68.a[i];
339	+	gpr(1) = r68.a[7];
340	+	WriteMacInt32(XLM_RUN_MODE, MODE_68K);
341	+	}
342	+
343		// Execute SheepShaver instruction
344		void sheepshaver_cpu::execute_sheep(uint32 opcode)
345		{
#	Line 192 | Line 350 | void sheepshaver_cpu::execute_sheep(uint
350		case 0:         // EMUL_RETURN
351		QuitEmulator();
352		break;
353	<
353	>
354		case 1:         // EXEC_RETURN
355	<	throw sheepshaver_exec_return();
355	>	spcflags().set(SPCFLAG_CPU_EXEC_RETURN);
356		break;
357
358		case 2:         // EXEC_NATIVE
359	<	NativeOp(NATIVE_OP_field::extract(opcode));
359	>	execute_native_op(NATIVE_OP_field::extract(opcode));
360		if (FN_field::test(opcode))
361		pc() = lr();
362		else
363		pc() += 4;
364		break;
365
366	<	default: {      // EMUL_OP
367	<	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);
366	>	default:        // EMUL_OP
367	>	execute_emul_op(EMUL_OP_field::extract(opcode) - 3);
368		pc() += 4;
369		break;
370		}
227	–	}
371		}
372
373	<	// Checks for pending interrupts
374	<	struct execute_nothing {
375	<	static inline void execute(powerpc_cpu *) { }
376	<	};
373	>	// Compile one instruction
374	>	int sheepshaver_cpu::compile1(codegen_context_t & cg_context)
375	>	{
376	>	#if PPC_ENABLE_JIT
377	>	const instr_info_t *ii = cg_context.instr_info;
378	>	if (ii->mnemo != PPC_I(SHEEP))
379	>	return COMPILE_FAILURE;
380	>
381	>	int status = COMPILE_FAILURE;
382	>	powerpc_dyngen & dg = cg_context.codegen;
383	>	uint32 opcode = cg_context.opcode;
384
385	<	static void HandleInterrupt(void);
385	>	switch (opcode & 0x3f) {
386	>	case 0:         // EMUL_RETURN
387	>	dg.gen_invoke(QuitEmulator);
388	>	status = COMPILE_CODE_OK;
389	>	break;
390
391	<	struct execute_spcflags_check {
392	<	static inline void execute(powerpc_cpu *cpu) {
393	<	if (SPCFLAGS_TEST(SPCFLAG_ALL_BUT_EXEC_RETURN)) {
394	<	if (SPCFLAGS_TEST( SPCFLAG_ENTER_MON )) {
395	<	SPCFLAGS_CLEAR( SPCFLAG_ENTER_MON );
396	<	enter_mon();
397	<	}
398	<	if (SPCFLAGS_TEST( SPCFLAG_DOINT )) {
399	<	SPCFLAGS_CLEAR( SPCFLAG_DOINT );
400	<	HandleInterrupt();
401	<	}
402	<	if (SPCFLAGS_TEST( SPCFLAG_INT )) {
403	<	SPCFLAGS_CLEAR( SPCFLAG_INT );
404	<	SPCFLAGS_SET( SPCFLAG_DOINT );
391	>	case 1:         // EXEC_RETURN
392	>	dg.gen_spcflags_set(SPCFLAG_CPU_EXEC_RETURN);
393	>	// Don't check for pending interrupts, we do know we have to
394	>	// get out of this block ASAP
395	>	dg.gen_exec_return();
396	>	status = COMPILE_EPILOGUE_OK;
397	>	break;
398	>
399	>	case 2: {       // EXEC_NATIVE
400	>	uint32 selector = NATIVE_OP_field::extract(opcode);
401	>	switch (selector) {
402	>	#if !PPC_REENTRANT_JIT
403	>	// Filter out functions that may invoke Execute68k() or
404	>	// CallMacOS(), this would break reentrancy as they could
405	>	// invalidate the translation cache and even overwrite
406	>	// continuation code when we are done with them.
407	>	case NATIVE_PATCH_NAME_REGISTRY:
408	>	dg.gen_invoke(DoPatchNameRegistry);
409	>	status = COMPILE_CODE_OK;
410	>	break;
411	>	case NATIVE_VIDEO_INSTALL_ACCEL:
412	>	dg.gen_invoke(VideoInstallAccel);
413	>	status = COMPILE_CODE_OK;
414	>	break;
415	>	case NATIVE_VIDEO_VBL:
416	>	dg.gen_invoke(VideoVBL);
417	>	status = COMPILE_CODE_OK;
418	>	break;
419	>	case NATIVE_GET_RESOURCE:
420	>	case NATIVE_GET_1_RESOURCE:
421	>	case NATIVE_GET_IND_RESOURCE:
422	>	case NATIVE_GET_1_IND_RESOURCE:
423	>	case NATIVE_R_GET_RESOURCE: {
424	>	static const uint32 get_resource_ptr[] = {
425	>	XLM_GET_RESOURCE,
426	>	XLM_GET_1_RESOURCE,
427	>	XLM_GET_IND_RESOURCE,
428	>	XLM_GET_1_IND_RESOURCE,
429	>	XLM_R_GET_RESOURCE
430	>	};
431	>	uint32 old_get_resource = ReadMacInt32(get_resource_ptr[selector - NATIVE_GET_RESOURCE]);
432	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
433	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::get_resource).ptr();
434	>	dg.gen_invoke_CPU_im(func, old_get_resource);
435	>	status = COMPILE_CODE_OK;
436	>	break;
437	>	}
438	>	case NATIVE_CHECK_LOAD_INVOC:
439	>	dg.gen_load_T0_GPR(3);
440	>	dg.gen_load_T1_GPR(4);
441	>	dg.gen_se_16_32_T1();
442	>	dg.gen_load_T2_GPR(5);
443	>	dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc);
444	>	status = COMPILE_CODE_OK;
445	>	break;
446	>	#endif
447	>	case NATIVE_DISABLE_INTERRUPT:
448	>	dg.gen_invoke(DisableInterrupt);
449	>	status = COMPILE_CODE_OK;
450	>	break;
451	>	case NATIVE_ENABLE_INTERRUPT:
452	>	dg.gen_invoke(EnableInterrupt);
453	>	status = COMPILE_CODE_OK;
454	>	break;
455	>	case NATIVE_BITBLT:
456	>	dg.gen_load_T0_GPR(3);
457	>	dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt);
458	>	status = COMPILE_CODE_OK;
459	>	break;
460	>	case NATIVE_INVRECT:
461	>	dg.gen_load_T0_GPR(3);
462	>	dg.gen_invoke_T0((void (*)(uint32))NQD_invrect);
463	>	status = COMPILE_CODE_OK;
464	>	break;
465	>	case NATIVE_FILLRECT:
466	>	dg.gen_load_T0_GPR(3);
467	>	dg.gen_invoke_T0((void (*)(uint32))NQD_fillrect);
468	>	status = COMPILE_CODE_OK;
469	>	break;
470	>	}
471	>	// Could we fully translate this NativeOp?
472	>	if (status == COMPILE_CODE_OK) {
473	>	if (!FN_field::test(opcode))
474	>	cg_context.done_compile = false;
475	>	else {
476	>	dg.gen_load_A0_LR();
477	>	dg.gen_set_PC_A0();
478	>	cg_context.done_compile = true;
479		}
480	+	break;
481	+	}
482	+	#if PPC_REENTRANT_JIT
483	+	// Try to execute NativeOp trampoline
484	+	if (!FN_field::test(opcode))
485	+	dg.gen_set_PC_im(cg_context.pc + 4);
486	+	else {
487	+	dg.gen_load_A0_LR();
488	+	dg.gen_set_PC_A0();
489	+	}
490	+	dg.gen_mov_32_T0_im(selector);
491	+	dg.gen_jmp(native_op_trampoline);
492	+	cg_context.done_compile = true;
493	+	status = COMPILE_EPILOGUE_OK;
494	+	break;
495	+	#endif
496	+	// Invoke NativeOp handler
497	+	if (!FN_field::test(opcode)) {
498	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
499	+	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
500	+	dg.gen_invoke_CPU_im(func, selector);
501	+	cg_context.done_compile = false;
502	+	status = COMPILE_CODE_OK;
503		}
504	+	// Otherwise, let it generate a call to execute_sheep() which
505	+	// will cause necessary updates to the program counter
506	+	break;
507		}
254	–	};
508
509	<	// Execution loop
510	<	void sheepshaver_cpu::execute(uint32 entry)
511	<	{
512	<	try {
513	<	pc() = entry;
514	<	powerpc_cpu::do_execute<execute_nothing, execute_spcflags_check>();
509	>	default: {      // EMUL_OP
510	>	uint32 emul_op = EMUL_OP_field::extract(opcode) - 3;
511	>	#if ENABLE_NATIVE_EMUL_OP
512	>	typedef void (*emul_op_func_t)(dyngen_cpu_base);
513	>	emul_op_func_t emul_op_func = 0;
514	>	switch (emul_op) {
515	>	case OP_MICROSECONDS:
516	>	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_microseconds).ptr();
517	>	break;
518	>	case OP_IDLE_TIME:
519	>	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_1).ptr();
520	>	break;
521	>	case OP_IDLE_TIME_2:
522	>	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_2).ptr();
523	>	break;
524	>	}
525	>	if (emul_op_func) {
526	>	dg.gen_invoke_CPU(emul_op_func);
527	>	cg_context.done_compile = false;
528	>	status = COMPILE_CODE_OK;
529	>	break;
530	>	}
531	>	#endif
532	>	#if PPC_REENTRANT_JIT
533	>	// Try to execute EmulOp trampoline
534	>	dg.gen_set_PC_im(cg_context.pc + 4);
535	>	dg.gen_mov_32_T0_im(emul_op);
536	>	dg.gen_jmp(emul_op_trampoline);
537	>	cg_context.done_compile = true;
538	>	status = COMPILE_EPILOGUE_OK;
539	>	break;
540	>	#endif
541	>	// Invoke EmulOp handler
542	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
543	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
544	>	dg.gen_invoke_CPU_im(func, emul_op);
545	>	cg_context.done_compile = false;
546	>	status = COMPILE_CODE_OK;
547	>	break;
548		}
263	–	catch (sheepshaver_exec_return const &) {
264	–	// Nothing, simply return
549		}
550	<	catch (...) {
551	<	printf("ERROR: execute() received an unknown exception!\n");
552	<	QuitEmulator();
550	>	return status;
551	>	#endif
552	>	return COMPILE_FAILURE;
553	>	}
554	>
555	>	// CPU context to preserve on interrupt
556	>	sheepshaver_cpu::interrupt_context::interrupt_context(sheepshaver_cpu *_cpu, const char *_where)
557	>	{
558	>	#if SAFE_INTERRUPT_PPC >= 2
559	>	cpu = _cpu;
560	>	where = _where;
561	>
562	>	// Save interrupt context
563	>	memcpy(&gpr[0], &cpu->gpr(0), sizeof(gpr));
564	>	pc = cpu->pc();
565	>	lr = cpu->lr();
566	>	ctr = cpu->ctr();
567	>	cr = cpu->get_cr();
568	>	xer = cpu->get_xer();
569	>	#endif
570	>	}
571	>
572	>	sheepshaver_cpu::interrupt_context::~interrupt_context()
573	>	{
574	>	#if SAFE_INTERRUPT_PPC >= 2
575	>	// Check whether CPU context was preserved by interrupt
576	>	if (memcmp(&gpr[0], &cpu->gpr(0), sizeof(gpr)) != 0) {
577	>	printf("FATAL: %s: interrupt clobbers registers\n", where);
578	>	for (int i = 0; i < 32; i++)
579	>	if (gpr[i] != cpu->gpr(i))
580	>	printf(" r%d: %08x -> %08x\n", i, gpr[i], cpu->gpr(i));
581		}
582	+	if (pc != cpu->pc())
583	+	printf("FATAL: %s: interrupt clobbers PC\n", where);
584	+	if (lr != cpu->lr())
585	+	printf("FATAL: %s: interrupt clobbers LR\n", where);
586	+	if (ctr != cpu->ctr())
587	+	printf("FATAL: %s: interrupt clobbers CTR\n", where);
588	+	if (cr != cpu->get_cr())
589	+	printf("FATAL: %s: interrupt clobbers CR\n", where);
590	+	if (xer != cpu->get_xer())
591	+	printf("FATAL: %s: interrupt clobbers XER\n", where);
592	+	#endif
593		}
594
595		// Handle MacOS interrupt
596	<	void sheepshaver_cpu::interrupt(uint32 entry, sheepshaver_cpu *cpu)
596	>	void sheepshaver_cpu::interrupt(uint32 entry)
597		{
598	<	#if MULTICORE_CPU
599	<	// Initialize stack pointer from previous CPU running
600	<	gpr(1) = cpu->gpr(1);
601	<	#else
598	>	#if EMUL_TIME_STATS
599	>	interrupt_count++;
600	>	const clock_t interrupt_start = clock();
601	>	#endif
602	>
603	>	#if SAFE_INTERRUPT_PPC
604	>	static int depth = 0;
605	>	if (depth != 0)
606	>	printf("FATAL: sheepshaver_cpu::interrupt() called more than once: %d\n", depth);
607	>	depth++;
608	>	#endif
609	>
610		// Save program counters and branch registers
611		uint32 saved_pc = pc();
612		uint32 saved_lr = lr();
613		uint32 saved_ctr= ctr();
614	<	#endif
614	>	uint32 saved_sp = gpr(1);
615
616	<	// Create stack frame
617	<	gpr(1) -= 64;
616	>	// Initialize stack pointer to SheepShaver alternate stack base
617	>	gpr(1) = SignalStackBase() - 64;
618
619		// Build trampoline to return from interrupt
620	<	uint32 trampoline[] = { POWERPC_EMUL_OP | 1 };
620	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
621
622		// Prepare registers for nanokernel interrupt routine
623	<	kernel_data->v[0x004 >> 2] = gpr(1);
624	<	kernel_data->v[0x018 >> 2] = gpr(6);
623	>	kernel_data->v[0x004 >> 2] = htonl(gpr(1));
624	>	kernel_data->v[0x018 >> 2] = htonl(gpr(6));
625
626	<	gpr(6) = kernel_data->v[0x65c >> 2];
626	>	gpr(6) = ntohl(kernel_data->v[0x65c >> 2]);
627		assert(gpr(6) != 0);
628		WriteMacInt32(gpr(6) + 0x13c, gpr(7));
629		WriteMacInt32(gpr(6) + 0x144, gpr(8));
#	Line 303 | Line 634 | void sheepshaver_cpu::interrupt(uint32 e
634		WriteMacInt32(gpr(6) + 0x16c, gpr(13));
635
636		gpr(1)  = KernelDataAddr;
637	<	gpr(7)  = kernel_data->v[0x660 >> 2];
637	>	gpr(7)  = ntohl(kernel_data->v[0x660 >> 2]);
638		gpr(8)  = 0;
639	<	gpr(10) = (uint32)trampoline;
640	<	gpr(12) = (uint32)trampoline;
641	<	gpr(13) = cr().get();
639	>	gpr(10) = trampoline.addr();
640	>	gpr(12) = trampoline.addr();
641	>	gpr(13) = get_cr();
642
643		// rlwimi. r7,r7,8,0,0
644		uint32 result = op_ppc_rlwimi::apply(gpr(7), 8, 0x80000000, gpr(7));
#	Line 315 | Line 646 | void sheepshaver_cpu::interrupt(uint32 e
646		gpr(7) = result;
647
648		gpr(11) = 0xf072; // MSR (SRR1)
649	<	cr().set((gpr(11) & 0x0fff0000) | (cr().get() & ~0x0fff0000));
649	>	cr().set((gpr(11) & 0x0fff0000) | (get_cr() & ~0x0fff0000));
650
651		// Enter nanokernel
652		execute(entry);
653
323	–	// Cleanup stack
324	–	gpr(1) += 64;
325	–
326	–	#if !MULTICORE_CPU
654		// Restore program counters and branch registers
655		pc() = saved_pc;
656		lr() = saved_lr;
657		ctr()= saved_ctr;
658	+	gpr(1) = saved_sp;
659	+
660	+	#if EMUL_TIME_STATS
661	+	interrupt_time += (clock() - interrupt_start);
662	+	#endif
663	+
664	+	#if SAFE_INTERRUPT_PPC
665	+	depth--;
666		#endif
667		}
668
669		// Execute 68k routine
670		void sheepshaver_cpu::execute_68k(uint32 entry, M68kRegisters *r)
671		{
672	+	#if EMUL_TIME_STATS
673	+	exec68k_count++;
674	+	const clock_t exec68k_start = clock();
675	+	#endif
676	+
677		#if SAFE_EXEC_68K
678		if (ReadMacInt32(XLM_RUN_MODE) != MODE_EMUL_OP)
679		printf("FATAL: Execute68k() not called from EMUL_OP mode\n");
#	Line 343 | Line 683 | void sheepshaver_cpu::execute_68k(uint32
683		uint32 saved_pc = pc();
684		uint32 saved_lr = lr();
685		uint32 saved_ctr= ctr();
686	+	uint32 saved_cr = get_cr();
687
688		// Create MacOS stack frame
689	+	// FIXME: make sure MacOS doesn't expect PPC registers to live on top
690		uint32 sp = gpr(1);
691	<	gpr(1) -= 56 + 19*4 + 18*8;
691	>	gpr(1) -= 56;
692		WriteMacInt32(gpr(1), sp);
693
694		// Save PowerPC registers
695	<	memcpy(Mac2HostAddr(gpr(1)+56), &gpr(13), sizeof(uint32)*(32-13));
695	>	uint32 saved_GPRs[19];
696	>	memcpy(&saved_GPRs[0], &gpr(13), sizeof(uint32)*(32-13));
697		#if SAVE_FP_EXEC_68K
698	<	memcpy(Mac2HostAddr(gpr(1)+56+19*4), &fpr(14), sizeof(double)*(32-14));
698	>	double saved_FPRs[18];
699	>	memcpy(&saved_FPRs[0], &fpr(14), sizeof(double)*(32-14));
700		#endif
701
702		// Setup registers for 68k emulator
#	Line 366 | Line 710 | void sheepshaver_cpu::execute_68k(uint32
710		gpr(25) = ReadMacInt32(XLM_68K_R25);            // MSB of SR
711		gpr(26) = 0;
712		gpr(28) = 0;                                                            // VBR
713	<	gpr(29) = kernel_data->ed.v[0x74 >> 2];         // Pointer to opcode table
714	<	gpr(30) = kernel_data->ed.v[0x78 >> 2];         // Address of emulator
713	>	gpr(29) = ntohl(kernel_data->ed.v[0x74 >> 2]);          // Pointer to opcode table
714	>	gpr(30) = ntohl(kernel_data->ed.v[0x78 >> 2]);          // Address of emulator
715		gpr(31) = KernelDataAddr + 0x1000;
716
717		// Push return address (points to EXEC_RETURN opcode) on stack
#	Line 399 | Line 743 | void sheepshaver_cpu::execute_68k(uint32
743		r->a[i] = gpr(16 + i);
744
745		// Restore PowerPC registers
746	<	memcpy(&gpr(13), Mac2HostAddr(gpr(1)+56), sizeof(uint32)*(32-13));
746	>	memcpy(&gpr(13), &saved_GPRs[0], sizeof(uint32)*(32-13));
747		#if SAVE_FP_EXEC_68K
748	<	memcpy(&fpr(14), Mac2HostAddr(gpr(1)+56+19*4), sizeof(double)*(32-14));
748	>	memcpy(&fpr(14), &saved_FPRs[0], sizeof(double)*(32-14));
749		#endif
750
751		// Cleanup stack
752	<	gpr(1) += 56 + 19*4 + 18*8;
752	>	gpr(1) += 56;
753
754		// Restore program counters and branch registers
755		pc() = saved_pc;
756		lr() = saved_lr;
757		ctr()= saved_ctr;
758	+	set_cr(saved_cr);
759	+
760	+	#if EMUL_TIME_STATS
761	+	exec68k_time += (clock() - exec68k_start);
762	+	#endif
763		}
764
765		// Call MacOS PPC code
766		uint32 sheepshaver_cpu::execute_macos_code(uint32 tvect, int nargs, uint32 const *args)
767		{
768	+	#if EMUL_TIME_STATS
769	+	macos_exec_count++;
770	+	const clock_t macos_exec_start = clock();
771	+	#endif
772	+
773		// Save program counters and branch registers
774		uint32 saved_pc = pc();
775		uint32 saved_lr = lr();
776		uint32 saved_ctr= ctr();
777
778		// Build trampoline with EXEC_RETURN
779	<	uint32 trampoline[] = { POWERPC_EMUL_OP | 1 };
780	<	lr() = (uint32)trampoline;
779	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
780	>	lr() = trampoline.addr();
781
782		gpr(1) -= 64;                                                           // Create stack frame
783		uint32 proc = ReadMacInt32(tvect);                      // Get routine address
#	Line 454 | Line 808 | uint32 sheepshaver_cpu::execute_macos_co
808		lr() = saved_lr;
809		ctr()= saved_ctr;
810
811	+	#if EMUL_TIME_STATS
812	+	macos_exec_time += (clock() - macos_exec_start);
813	+	#endif
814	+
815		return retval;
816		}
817
#	Line 462 | Line 820 | inline void sheepshaver_cpu::execute_ppc
820		{
821		// Save branch registers
822		uint32 saved_lr = lr();
465	–	uint32 saved_ctr= ctr();
823
824	<	const uint32 trampoline[] = { POWERPC_EMUL_OP | 1 };
824	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
825	>	WriteMacInt32(trampoline.addr(), POWERPC_EXEC_RETURN);
826	>	lr() = trampoline.addr();
827
469	–	lr() = (uint32)trampoline;
470	–	ctr()= entry;
828		execute(entry);
829
830		// Restore branch registers
831		lr() = saved_lr;
475	–	ctr()= saved_ctr;
832		}
833
834		// Resource Manager thunk
479	–	extern "C" void check_load_invoc(uint32 type, int16 id, uint16 **h);
480	–
835		inline void sheepshaver_cpu::get_resource(uint32 old_get_resource)
836		{
837		uint32 type = gpr(3);
#	Line 488 | Line 842 | inline void sheepshaver_cpu::get_resourc
842
843		// Call old routine
844		execute_ppc(old_get_resource);
491	–	uint16 **handle = (uint16 **)gpr(3);
845
846		// Call CheckLoad()
847	+	uint32 handle = gpr(3);
848		check_load_invoc(type, id, handle);
849	<	gpr(3) = (uint32)handle;
849	>	gpr(3) = handle;
850
851		// Cleanup stack
852		gpr(1) += 56;
#	Line 503 | Line 857 | inline void sheepshaver_cpu::get_resourc
857		*              SheepShaver CPU engine interface
858		**/
859
860	<	static sheepshaver_cpu *main_cpu = NULL;                // CPU emulator to handle usual control flow
861	<	static sheepshaver_cpu *interrupt_cpu = NULL;   // CPU emulator to handle interrupts
508	<	static sheepshaver_cpu *current_cpu = NULL;             // Current CPU emulator context
860	>	// PowerPC CPU emulator
861	>	static sheepshaver_cpu *ppc_cpu = NULL;
862
863	<	static inline void cpu_push(sheepshaver_cpu *new_cpu)
863	>	void FlushCodeCache(uintptr start, uintptr end)
864		{
865	<	#if MULTICORE_CPU
866	<	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
865	>	D(bug("FlushCodeCache(%08x, %08x)\n", start, end));
866	>	ppc_cpu->invalidate_cache_range(start, end);
867		}
868
869		// Dump PPC registers
870		static void dump_registers(void)
871		{
872	<	current_cpu->dump_registers();
872	>	ppc_cpu->dump_registers();
873		}
874
875		// Dump log
876		static void dump_log(void)
877		{
878	<	current_cpu->dump_log();
878	>	ppc_cpu->dump_log();
879		}
880
881		/*
#	Line 552 | Line 897 | static sigsegv_return_t sigsegv_handler(
897		if ((addr - ROM_BASE) < ROM_SIZE)
898		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
899
900	<	// Ignore all other faults, if requested
901	<	if (PrefsFindBool("ignoresegv"))
902	<	return SIGSEGV_RETURN_FAILURE;
900	>	// Get program counter of target CPU
901	>	sheepshaver_cpu * const cpu = ppc_cpu;
902	>	const uint32 pc = cpu->pc();
903	>
904	>	// Fault in Mac ROM or RAM?
905	>	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));
906	>	if (mac_fault) {
907	>
908	>	// "VM settings" during MacOS 8 installation
909	>	if (pc == ROM_BASE + 0x488160 && cpu->gpr(20) == 0xf8000000)
910	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
911	>
912	>	// MacOS 8.5 installation
913	>	else if (pc == ROM_BASE + 0x488140 && cpu->gpr(16) == 0xf8000000)
914	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
915	>
916	>	// MacOS 8 serial drivers on startup
917	>	else if (pc == ROM_BASE + 0x48e080 && (cpu->gpr(8) == 0xf3012002 || cpu->gpr(8) == 0xf3012000))
918	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
919	>
920	>	// MacOS 8.1 serial drivers on startup
921	>	else if (pc == ROM_BASE + 0x48c5e0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
922	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
923	>	else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
924	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
925	>
926	>	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
927	>	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(16) == 0xf3012002 || cpu->gpr(16) == 0xf3012000))
928	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
929	>	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
930	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
931	>
932	>	// Ignore writes to the zero page
933	>	else if ((uint32)(addr - SheepMem::ZeroPage()) < (uint32)SheepMem::PageSize())
934	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
935	>
936	>	// Ignore all other faults, if requested
937	>	if (PrefsFindBool("ignoresegv"))
938	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
939	>	}
940		#else
941		#error "FIXME: You don't have the capability to skip instruction within signal handlers"
942		#endif
#	Line 562 | Line 944 | static sigsegv_return_t sigsegv_handler(
944		printf("SIGSEGV\n");
945		printf("  pc %p\n", fault_instruction);
946		printf("  ea %p\n", fault_address);
565	–	printf(" cpu %s\n", current_cpu == main_cpu ? "main" : "interrupts");
947		dump_registers();
948	<	current_cpu->dump_log();
948	>	ppc_cpu->dump_log();
949		enter_mon();
950		QuitEmulator();
951
#	Line 574 | Line 955 | static sigsegv_return_t sigsegv_handler(
955		void init_emul_ppc(void)
956		{
957		// Initialize main CPU emulator
958	<	main_cpu = new sheepshaver_cpu();
959	<	main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
958	>	ppc_cpu = new sheepshaver_cpu();
959	>	ppc_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
960	>	ppc_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
961		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
962
581	–	#if MULTICORE_CPU
582	–	// Initialize alternate CPU emulator to handle interrupts
583	–	interrupt_cpu = new sheepshaver_cpu();
584	–	#endif
585	–
963		// Install the handler for SIGSEGV
964		sigsegv_install_handler(sigsegv_handler);
965	<
965	>
966		#if ENABLE_MON
967		// Install "regs" command in cxmon
968		mon_add_command("regs", dump_registers, "regs                     Dump PowerPC registers\n");
969		mon_add_command("log", dump_log, "log                      Dump PowerPC emulation log\n");
970		#endif
971	+
972	+	#if EMUL_TIME_STATS
973	+	emul_start_time = clock();
974	+	#endif
975		}
976
977		/*
978	+	*  Deinitialize emulation
979	+	*/
980	+
981	+	void exit_emul_ppc(void)
982	+	{
983	+	#if EMUL_TIME_STATS
984	+	clock_t emul_end_time = clock();
985	+
986	+	printf("### Statistics for SheepShaver emulation parts\n");
987	+	const clock_t emul_time = emul_end_time - emul_start_time;
988	+	printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
989	+	printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
990	+	(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
991	+
992	+	#define PRINT_STATS(LABEL, VAR_PREFIX) do {                                                             \
993	+	printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count);             \
994	+	printf("Total " LABEL " time  : %.1f sec (%.1f%%)\n",                   \
995	+	double(VAR_PREFIX##_time) / double(CLOCKS_PER_SEC),          \
996	+	100.0 * double(VAR_PREFIX##_time) / double(emul_time));      \
997	+	} while (0)
998	+
999	+	PRINT_STATS("Execute68k[Trap] execution", exec68k);
1000	+	PRINT_STATS("NativeOp execution", native_exec);
1001	+	PRINT_STATS("MacOS routine execution", macos_exec);
1002	+
1003	+	#undef PRINT_STATS
1004	+	printf("\n");
1005	+	#endif
1006	+
1007	+	delete ppc_cpu;
1008	+	}
1009	+
1010	+	#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
1011	+	// Initialize EmulOp trampolines
1012	+	void init_emul_op_trampolines(basic_dyngen & dg)
1013	+	{
1014	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
1015	+	func_t func;
1016	+
1017	+	// EmulOp
1018	+	emul_op_trampoline = dg.gen_start();
1019	+	func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
1020	+	dg.gen_invoke_CPU_T0(func);
1021	+	dg.gen_exec_return();
1022	+	dg.gen_end();
1023	+
1024	+	// NativeOp
1025	+	native_op_trampoline = dg.gen_start();
1026	+	func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
1027	+	dg.gen_invoke_CPU_T0(func);
1028	+	dg.gen_exec_return();
1029	+	dg.gen_end();
1030	+
1031	+	D(bug("EmulOp trampoline:   %p\n", emul_op_trampoline));
1032	+	D(bug("NativeOp trampoline: %p\n", native_op_trampoline));
1033	+	}
1034	+	#endif
1035	+
1036	+	/*
1037		*  Emulation loop
1038		*/
1039
1040		void emul_ppc(uint32 entry)
1041		{
1042	<	current_cpu = main_cpu;
1043	<	current_cpu->start_log();
1044	<	current_cpu->execute(entry);
1042	>	#if 0
1043	>	ppc_cpu->start_log();
1044	>	#endif
1045	>	// start emulation loop and enable code translation or caching
1046	>	ppc_cpu->execute(entry);
1047		}
1048
1049		/*
1050		*  Handle PowerPC interrupt
1051		*/
1052
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	–
1053		void TriggerInterrupt(void)
1054		{
1055		#if 0
1056		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1057		#else
1058	<	SPCFLAGS_SET( SPCFLAG_INT );
1058	>	// Trigger interrupt to main cpu only
1059	>	if (ppc_cpu)
1060	>	ppc_cpu->trigger_interrupt();
1061		#endif
1062		}
1063
1064	<	static void HandleInterrupt(void)
1064	>	void sheepshaver_cpu::handle_interrupt(void)
1065		{
1066		// Do nothing if interrupts are disabled
1067	<	if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
1067	>	if (*(int32 *)XLM_IRQ_NEST > 0)
1068		return;
1069
1070		// Do nothing if there is no interrupt pending
1071		if (InterruptFlags == 0)
1072		return;
1073
1074	+	// Current interrupt nest level
1075	+	static int interrupt_depth = 0;
1076	+	++interrupt_depth;
1077	+
1078		// Disable MacOS stack sniffer
1079		WriteMacInt32(0x110, 0);
1080
#	Line 639 | Line 1082 | static void HandleInterrupt(void)
1082		switch (ReadMacInt32(XLM_RUN_MODE)) {
1083		case MODE_68K:
1084		// 68k emulator active, trigger 68k interrupt level 1
642	–	assert(current_cpu == main_cpu);
1085		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1086	<	main_cpu->set_cr(main_cpu->get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
1086	>	set_cr(get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
1087		break;
1088
1089		#if INTERRUPTS_IN_NATIVE_MODE
1090		case MODE_NATIVE:
1091		// 68k emulator inactive, in nanokernel?
1092	<	assert(current_cpu == main_cpu);
1093	<	if (main_cpu->gpr(1) != KernelDataAddr) {
1092	>	if (gpr(1) != KernelDataAddr && interrupt_depth == 1) {
1093	>	interrupt_context ctx(this, "PowerPC mode");
1094	>
1095		// Prepare for 68k interrupt level 1
1096		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1097		WriteMacInt32(tswap32(kernel_data->v[0x658 >> 2]) + 0xdc,
#	Line 657 | Line 1100 | static void HandleInterrupt(void)
1100
1101		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1102		DisableInterrupt();
660	–	cpu_push(interrupt_cpu);
1103		if (ROMType == ROMTYPE_NEWWORLD)
1104	<	current_cpu->interrupt(ROM_BASE + 0x312b1c, main_cpu);
1104	>	ppc_cpu->interrupt(ROM_BASE + 0x312b1c);
1105		else
1106	<	current_cpu->interrupt(ROM_BASE + 0x312a3c, main_cpu);
665	<	cpu_pop();
1106	>	ppc_cpu->interrupt(ROM_BASE + 0x312a3c);
1107		}
1108		break;
1109		#endif
#	Line 671 | Line 1112 | static void HandleInterrupt(void)
1112		case MODE_EMUL_OP:
1113		// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
1114		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1115	+	interrupt_context ctx(this, "68k mode");
1116		#if 1
1117		// Execute full 68k interrupt routine
1118		M68kRegisters r;
#	Line 692 | Line 1134 | static void HandleInterrupt(void)
1134		if (InterruptFlags & INTFLAG_VIA) {
1135		ClearInterruptFlag(INTFLAG_VIA);
1136		ADBInterrupt();
1137	<	ExecutePPC(VideoVBL);
1137	>	ExecuteNative(NATIVE_VIDEO_VBL);
1138		}
1139		}
1140		#endif
#	Line 700 | Line 1142 | static void HandleInterrupt(void)
1142		break;
1143		#endif
1144		}
703	–	}
704	–
705	–	/*
706	–	*  Execute NATIVE_OP opcode (called by PowerPC emulator)
707	–	*/
708	–
709	–	#define POWERPC_NATIVE_OP_INIT(LR, OP) \
710	–	tswap32(POWERPC_EMUL_OP | ((LR) << 11) | (((uint32)OP) << 6) | 2)
1145
1146	<	// FIXME: Make sure 32-bit relocations are used
1147	<	const uint32 NativeOpTable[NATIVE_OP_MAX] = {
1148	<	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	<	};
1146	>	// We are done with this interrupt
1147	>	--interrupt_depth;
1148	>	}
1149
1150		static void get_resource(void);
1151		static void get_1_resource(void);
#	Line 744 | Line 1153 | static void get_ind_resource(void);
1153		static void get_1_ind_resource(void);
1154		static void r_get_resource(void);
1155
1156	<	#define GPR(REG) current_cpu->gpr(REG)
1157	<
749	<	static void NativeOp(int selector)
1156	>	// Execute NATIVE_OP routine
1157	>	void sheepshaver_cpu::execute_native_op(uint32 selector)
1158		{
1159	+	#if EMUL_TIME_STATS
1160	+	native_exec_count++;
1161	+	const clock_t native_exec_start = clock();
1162	+	#endif
1163	+
1164		switch (selector) {
1165		case NATIVE_PATCH_NAME_REGISTRY:
1166		DoPatchNameRegistry();
#	Line 759 | Line 1172 | static void NativeOp(int selector)
1172		VideoVBL();
1173		break;
1174		case NATIVE_VIDEO_DO_DRIVER_IO:
1175	<	GPR(3) = (int32)(int16)VideoDoDriverIO((void *)GPR(3), (void *)GPR(4),
1176	<	(void *)GPR(5), GPR(6), GPR(7));
1175	>	gpr(3) = (int32)(int16)VideoDoDriverIO((void *)gpr(3), (void *)gpr(4),
1176	>	(void *)gpr(5), gpr(6), gpr(7));
1177		break;
1178	<	case NATIVE_GET_RESOURCE:
1179	<	get_resource();
1178	>	#ifdef WORDS_BIGENDIAN
1179	>	case NATIVE_ETHER_IRQ:
1180	>	EtherIRQ();
1181		break;
1182	<	case NATIVE_GET_1_RESOURCE:
1183	<	get_1_resource();
1182	>	case NATIVE_ETHER_INIT:
1183	>	gpr(3) = InitStreamModule((void *)gpr(3));
1184		break;
1185	<	case NATIVE_GET_IND_RESOURCE:
1186	<	get_ind_resource();
1185	>	case NATIVE_ETHER_TERM:
1186	>	TerminateStreamModule();
1187		break;
1188	<	case NATIVE_GET_1_IND_RESOURCE:
1189	<	get_1_ind_resource();
1188	>	case NATIVE_ETHER_OPEN:
1189	>	gpr(3) = ether_open((queue_t *)gpr(3), (void *)gpr(4), gpr(5), gpr(6), (void*)gpr(7));
1190	>	break;
1191	>	case NATIVE_ETHER_CLOSE:
1192	>	gpr(3) = ether_close((queue_t *)gpr(3), gpr(4), (void *)gpr(5));
1193	>	break;
1194	>	case NATIVE_ETHER_WPUT:
1195	>	gpr(3) = ether_wput((queue_t *)gpr(3), (mblk_t *)gpr(4));
1196	>	break;
1197	>	case NATIVE_ETHER_RSRV:
1198	>	gpr(3) = ether_rsrv((queue_t *)gpr(3));
1199	>	break;
1200	>	#else
1201	>	case NATIVE_ETHER_INIT:
1202	>	// FIXME: needs more complicated thunks
1203	>	gpr(3) = false;
1204	>	break;
1205	>	#endif
1206	>	case NATIVE_SYNC_HOOK:
1207	>	gpr(3) = NQD_sync_hook(gpr(3));
1208	>	break;
1209	>	case NATIVE_BITBLT_HOOK:
1210	>	gpr(3) = NQD_bitblt_hook(gpr(3));
1211	>	break;
1212	>	case NATIVE_BITBLT:
1213	>	NQD_bitblt(gpr(3));
1214	>	break;
1215	>	case NATIVE_FILLRECT_HOOK:
1216	>	gpr(3) = NQD_fillrect_hook(gpr(3));
1217	>	break;
1218	>	case NATIVE_INVRECT:
1219	>	NQD_invrect(gpr(3));
1220		break;
1221	<	case NATIVE_R_GET_RESOURCE:
1222	<	r_get_resource();
1221	>	case NATIVE_FILLRECT:
1222	>	NQD_fillrect(gpr(3));
1223		break;
1224		case NATIVE_SERIAL_NOTHING:
1225		case NATIVE_SERIAL_OPEN:
#	Line 794 | Line 1238 | static void NativeOp(int selector)
1238		SerialStatus,
1239		SerialClose
1240		};
1241	<	GPR(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](GPR(3), GPR(4));
1241	>	gpr(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](gpr(3), gpr(4));
1242	>	break;
1243	>	}
1244	>	case NATIVE_GET_RESOURCE:
1245	>	case NATIVE_GET_1_RESOURCE:
1246	>	case NATIVE_GET_IND_RESOURCE:
1247	>	case NATIVE_GET_1_IND_RESOURCE:
1248	>	case NATIVE_R_GET_RESOURCE: {
1249	>	typedef void (*GetResourceCallback)(void);
1250	>	static const GetResourceCallback get_resource_callbacks[] = {
1251	>	::get_resource,
1252	>	::get_1_resource,
1253	>	::get_ind_resource,
1254	>	::get_1_ind_resource,
1255	>	::r_get_resource
1256	>	};
1257	>	get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1258		break;
1259		}
1260		case NATIVE_DISABLE_INTERRUPT:
#	Line 803 | Line 1263 | static void NativeOp(int selector)
1263		case NATIVE_ENABLE_INTERRUPT:
1264		EnableInterrupt();
1265		break;
1266	+	case NATIVE_MAKE_EXECUTABLE:
1267	+	MakeExecutable(0, (void *)gpr(4), gpr(5));
1268	+	break;
1269	+	case NATIVE_CHECK_LOAD_INVOC:
1270	+	check_load_invoc(gpr(3), gpr(4), gpr(5));
1271	+	break;
1272		default:
1273		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
1274		QuitEmulator();
1275		break;
1276		}
811	–	}
1277
1278	<	/*
1279	<	*  Execute native subroutine (LR must contain return address)
1280	<	*/
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);
1278	>	#if EMUL_TIME_STATS
1279	>	native_exec_time += (clock() - native_exec_start);
1280	>	#endif
1281		}
1282
1283		/*
#	Line 832 | Line 1288 | void ExecuteNative(int selector)
1288
1289		void Execute68k(uint32 pc, M68kRegisters *r)
1290		{
1291	<	current_cpu->execute_68k(pc, r);
1291	>	ppc_cpu->execute_68k(pc, r);
1292		}
1293
1294		/*
#	Line 842 | Line 1298 | void Execute68k(uint32 pc, M68kRegisters
1298
1299		void Execute68kTrap(uint16 trap, M68kRegisters *r)
1300		{
1301	<	uint16 proc[2] = {trap, M68K_RTS};
1302	<	Execute68k((uint32)proc, r);
1301	>	SheepVar proc_var(4);
1302	>	uint32 proc = proc_var.addr();
1303	>	WriteMacInt16(proc, trap);
1304	>	WriteMacInt16(proc + 2, M68K_RTS);
1305	>	Execute68k(proc, r);
1306		}
1307
1308		/*
#	Line 852 | Line 1311 | void Execute68kTrap(uint16 trap, M68kReg
1311
1312		uint32 call_macos(uint32 tvect)
1313		{
1314	<	return current_cpu->execute_macos_code(tvect, 0, NULL);
1314	>	return ppc_cpu->execute_macos_code(tvect, 0, NULL);
1315		}
1316
1317		uint32 call_macos1(uint32 tvect, uint32 arg1)
1318		{
1319		const uint32 args[] = { arg1 };
1320	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1320	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1321		}
1322
1323		uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2)
1324		{
1325		const uint32 args[] = { arg1, arg2 };
1326	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1326	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1327		}
1328
1329		uint32 call_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3)
1330		{
1331		const uint32 args[] = { arg1, arg2, arg3 };
1332	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1332	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1333		}
1334
1335		uint32 call_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4)
1336		{
1337		const uint32 args[] = { arg1, arg2, arg3, arg4 };
1338	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1338	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1339		}
1340
1341		uint32 call_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5)
1342		{
1343		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5 };
1344	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1344	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1345		}
1346
1347		uint32 call_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6)
1348		{
1349		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6 };
1350	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1350	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1351		}
1352
1353		uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7)
1354		{
1355		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 };
1356	<	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;
1356	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1357		}
1358
1359		/*
#	Line 928 | Line 1362 | int atomic_or(int *var, int v)
1362
1363		void get_resource(void)
1364		{
1365	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1365	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1366		}
1367
1368		void get_1_resource(void)
1369		{
1370	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1370	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1371		}
1372
1373		void get_ind_resource(void)
1374		{
1375	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1375	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1376		}
1377
1378		void get_1_ind_resource(void)
1379		{
1380	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1380	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1381		}
1382
1383		void r_get_resource(void)
1384		{
1385	<	current_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1385	>	ppc_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1386		}

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