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

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.2 by gbeauche, 2003-09-28T21:27:34Z vs.
Revision 1.41 by gbeauche, 2004-05-20T12:33:58Z

#	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 21 | Line 21
21		#include "sysdeps.h"
22		#include "cpu_emulation.h"
23		#include "main.h"
24	+	#include "prefs.h"
25		#include "xlowmem.h"
26		#include "emul_op.h"
27		#include "rom_patches.h"
28		#include "macos_util.h"
29		#include "block-alloc.hpp"
30		#include "sigsegv.h"
30	–	#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 55 | 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 70 | 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 {
75	<	uint32  v[0x400];
76	<	};
77	<
78	<	// Kernel Data
79	<	struct KernelData {
80	<	uint32  v[0x400];
81	<	EmulatorData ed;
82	<	};
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 97 | 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()
104	<	{ 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	<	// Execution loop
174	<	void execute(uint32 pc);
173	>	// Execute NATIVE_OP routine
174	>	void execute_native_op(uint32 native_op);
175	>
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 119 | 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);
196	<
128	<	// spcflags for interrupts handling
129	<	static uint32 spcflags;
195	>	void interrupt(uint32 entry);
196	>	void handle_interrupt();
197
198	<	// Lazy memory allocator (one item at a time)
199	<	void *operator new(size_t size)
133	<	{ return allocator_helper< sheepshaver_cpu, lazy_allocator >::allocate(); }
134	<	void operator delete(void *p)
135	<	{ allocator_helper< sheepshaver_cpu, lazy_allocator >::deallocate(p); }
136	<	// FIXME: really make surre array allocation fail at link time?
137	<	void *operator new[](size_t);
138	<	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 167 | Line 257 | void sheepshaver_cpu::init_decoder()
257		}
258		}
259
170	–	// Forward declaration for native opcode handler
171	–	static void NativeOp(int selector);
172	–
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 191 | 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;
209	<	WriteMacInt32(XLM_68K_R25, gpr(25));
210	<	WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
211	<	for (int i = 0; i < 8; i++)
212	<	r68.d[i] = gpr(8 + i);
213	<	for (int i = 0; i < 7; i++)
214	<	r68.a[i] = gpr(16 + i);
215	<	r68.a[7] = gpr(1);
216	<	EmulOp(&r68, gpr(24), EMUL_OP_field::extract(opcode) - 3);
217	<	for (int i = 0; i < 8; i++)
218	<	gpr(8 + i) = r68.d[i];
219	<	for (int i = 0; i < 7; i++)
220	<	gpr(16 + i) = r68.a[i];
221	<	gpr(1) = r68.a[7];
222	<	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		}
226	–	}
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 (FN_field::test(opcode)) {
473	>	if (status != COMPILE_FAILURE) {
474	>	dg.gen_load_A0_LR();
475	>	dg.gen_set_PC_A0();
476		}
477	+	cg_context.done_compile = true;
478	+	break;
479	+	}
480	+	else if (status != COMPILE_FAILURE) {
481	+	cg_context.done_compile = false;
482	+	break;
483		}
484	+	#if PPC_REENTRANT_JIT
485	+	// Try to execute NativeOp trampoline
486	+	dg.gen_set_PC_im(cg_context.pc + 4);
487	+	dg.gen_mov_32_T0_im(selector);
488	+	dg.gen_jmp(native_op_trampoline);
489	+	cg_context.done_compile = true;
490	+	status = COMPILE_EPILOGUE_OK;
491	+	break;
492	+	#endif
493	+	// Invoke NativeOp handler
494	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
495	+	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
496	+	dg.gen_invoke_CPU_im(func, selector);
497	+	cg_context.done_compile = false;
498	+	status = COMPILE_CODE_OK;
499	+	break;
500		}
253	–	};
501
502	<	// Execution loop
503	<	void sheepshaver_cpu::execute(uint32 entry)
504	<	{
505	<	try {
506	<	pc() = entry;
507	<	powerpc_cpu::do_execute<execute_nothing, execute_spcflags_check>();
502	>	default: {      // EMUL_OP
503	>	uint32 emul_op = EMUL_OP_field::extract(opcode) - 3;
504	>	#if ENABLE_NATIVE_EMUL_OP
505	>	typedef void (*emul_op_func_t)(dyngen_cpu_base);
506	>	emul_op_func_t emul_op_func = 0;
507	>	switch (emul_op) {
508	>	case OP_MICROSECONDS:
509	>	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_microseconds).ptr();
510	>	break;
511	>	case OP_IDLE_TIME:
512	>	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_1).ptr();
513	>	break;
514	>	case OP_IDLE_TIME_2:
515	>	emul_op_func = (emul_op_func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op_idle_time_2).ptr();
516	>	break;
517	>	}
518	>	if (emul_op_func) {
519	>	dg.gen_invoke_CPU(emul_op_func);
520	>	cg_context.done_compile = false;
521	>	status = COMPILE_CODE_OK;
522	>	break;
523	>	}
524	>	#endif
525	>	#if PPC_REENTRANT_JIT
526	>	// Try to execute EmulOp trampoline
527	>	dg.gen_set_PC_im(cg_context.pc + 4);
528	>	dg.gen_mov_32_T0_im(emul_op);
529	>	dg.gen_jmp(emul_op_trampoline);
530	>	cg_context.done_compile = true;
531	>	status = COMPILE_EPILOGUE_OK;
532	>	break;
533	>	#endif
534	>	// Invoke EmulOp handler
535	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
536	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
537	>	dg.gen_invoke_CPU_im(func, emul_op);
538	>	cg_context.done_compile = false;
539	>	status = COMPILE_CODE_OK;
540	>	break;
541		}
262	–	catch (sheepshaver_exec_return const &) {
263	–	// Nothing, simply return
542		}
543	<	catch (...) {
544	<	printf("ERROR: execute() received an unknown exception!\n");
545	<	QuitEmulator();
543	>	return status;
544	>	#endif
545	>	return COMPILE_FAILURE;
546	>	}
547	>
548	>	// CPU context to preserve on interrupt
549	>	sheepshaver_cpu::interrupt_context::interrupt_context(sheepshaver_cpu *_cpu, const char *_where)
550	>	{
551	>	#if SAFE_INTERRUPT_PPC >= 2
552	>	cpu = _cpu;
553	>	where = _where;
554	>
555	>	// Save interrupt context
556	>	memcpy(&gpr[0], &cpu->gpr(0), sizeof(gpr));
557	>	pc = cpu->pc();
558	>	lr = cpu->lr();
559	>	ctr = cpu->ctr();
560	>	cr = cpu->get_cr();
561	>	xer = cpu->get_xer();
562	>	#endif
563	>	}
564	>
565	>	sheepshaver_cpu::interrupt_context::~interrupt_context()
566	>	{
567	>	#if SAFE_INTERRUPT_PPC >= 2
568	>	// Check whether CPU context was preserved by interrupt
569	>	if (memcmp(&gpr[0], &cpu->gpr(0), sizeof(gpr)) != 0) {
570	>	printf("FATAL: %s: interrupt clobbers registers\n", where);
571	>	for (int i = 0; i < 32; i++)
572	>	if (gpr[i] != cpu->gpr(i))
573	>	printf(" r%d: %08x -> %08x\n", i, gpr[i], cpu->gpr(i));
574		}
575	+	if (pc != cpu->pc())
576	+	printf("FATAL: %s: interrupt clobbers PC\n", where);
577	+	if (lr != cpu->lr())
578	+	printf("FATAL: %s: interrupt clobbers LR\n", where);
579	+	if (ctr != cpu->ctr())
580	+	printf("FATAL: %s: interrupt clobbers CTR\n", where);
581	+	if (cr != cpu->get_cr())
582	+	printf("FATAL: %s: interrupt clobbers CR\n", where);
583	+	if (xer != cpu->get_xer())
584	+	printf("FATAL: %s: interrupt clobbers XER\n", where);
585	+	#endif
586		}
587
588		// Handle MacOS interrupt
589	<	void sheepshaver_cpu::interrupt(uint32 entry, sheepshaver_cpu *cpu)
589	>	void sheepshaver_cpu::interrupt(uint32 entry)
590		{
591	<	#if MULTICORE_CPU
592	<	// Initialize stack pointer from previous CPU running
593	<	gpr(1) = cpu->gpr(1);
594	<	#else
591	>	#if EMUL_TIME_STATS
592	>	interrupt_count++;
593	>	const clock_t interrupt_start = clock();
594	>	#endif
595	>
596	>	#if SAFE_INTERRUPT_PPC
597	>	static int depth = 0;
598	>	if (depth != 0)
599	>	printf("FATAL: sheepshaver_cpu::interrupt() called more than once: %d\n", depth);
600	>	depth++;
601	>	#endif
602	>
603		// Save program counters and branch registers
604		uint32 saved_pc = pc();
605		uint32 saved_lr = lr();
606		uint32 saved_ctr= ctr();
607	<	#endif
607	>	uint32 saved_sp = gpr(1);
608
609	<	// Create stack frame
610	<	gpr(1) -= 64;
609	>	// Initialize stack pointer to SheepShaver alternate stack base
610	>	gpr(1) = SignalStackBase() - 64;
611
612		// Build trampoline to return from interrupt
613	<	uint32 trampoline[] = { POWERPC_EMUL_OP | 1 };
613	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
614
615		// Prepare registers for nanokernel interrupt routine
616	<	kernel_data->v[0x004 >> 2] = gpr(1);
617	<	kernel_data->v[0x018 >> 2] = gpr(6);
616	>	kernel_data->v[0x004 >> 2] = htonl(gpr(1));
617	>	kernel_data->v[0x018 >> 2] = htonl(gpr(6));
618
619	<	gpr(6) = kernel_data->v[0x65c >> 2];
619	>	gpr(6) = ntohl(kernel_data->v[0x65c >> 2]);
620		assert(gpr(6) != 0);
621		WriteMacInt32(gpr(6) + 0x13c, gpr(7));
622		WriteMacInt32(gpr(6) + 0x144, gpr(8));
#	Line 302 | Line 627 | void sheepshaver_cpu::interrupt(uint32 e
627		WriteMacInt32(gpr(6) + 0x16c, gpr(13));
628
629		gpr(1)  = KernelDataAddr;
630	<	gpr(7)  = kernel_data->v[0x660 >> 2];
630	>	gpr(7)  = ntohl(kernel_data->v[0x660 >> 2]);
631		gpr(8)  = 0;
632	<	gpr(10) = (uint32)trampoline;
633	<	gpr(12) = (uint32)trampoline;
634	<	gpr(13) = cr().get();
632	>	gpr(10) = trampoline.addr();
633	>	gpr(12) = trampoline.addr();
634	>	gpr(13) = get_cr();
635
636		// rlwimi. r7,r7,8,0,0
637		uint32 result = op_ppc_rlwimi::apply(gpr(7), 8, 0x80000000, gpr(7));
#	Line 314 | Line 639 | void sheepshaver_cpu::interrupt(uint32 e
639		gpr(7) = result;
640
641		gpr(11) = 0xf072; // MSR (SRR1)
642	<	cr().set((gpr(11) & 0x0fff0000) | (cr().get() & ~0x0fff0000));
642	>	cr().set((gpr(11) & 0x0fff0000) | (get_cr() & ~0x0fff0000));
643
644		// Enter nanokernel
645		execute(entry);
646
322	–	// Cleanup stack
323	–	gpr(1) += 64;
324	–
325	–	#if !MULTICORE_CPU
647		// Restore program counters and branch registers
648		pc() = saved_pc;
649		lr() = saved_lr;
650		ctr()= saved_ctr;
651	+	gpr(1) = saved_sp;
652	+
653	+	#if EMUL_TIME_STATS
654	+	interrupt_time += (clock() - interrupt_start);
655	+	#endif
656	+
657	+	#if SAFE_INTERRUPT_PPC
658	+	depth--;
659		#endif
660		}
661
662		// Execute 68k routine
663		void sheepshaver_cpu::execute_68k(uint32 entry, M68kRegisters *r)
664		{
665	+	#if EMUL_TIME_STATS
666	+	exec68k_count++;
667	+	const clock_t exec68k_start = clock();
668	+	#endif
669	+
670		#if SAFE_EXEC_68K
671		if (ReadMacInt32(XLM_RUN_MODE) != MODE_EMUL_OP)
672		printf("FATAL: Execute68k() not called from EMUL_OP mode\n");
#	Line 342 | Line 676 | void sheepshaver_cpu::execute_68k(uint32
676		uint32 saved_pc = pc();
677		uint32 saved_lr = lr();
678		uint32 saved_ctr= ctr();
679	+	uint32 saved_cr = get_cr();
680
681		// Create MacOS stack frame
682	+	// FIXME: make sure MacOS doesn't expect PPC registers to live on top
683		uint32 sp = gpr(1);
684	<	gpr(1) -= 56 + 19*4 + 18*8;
684	>	gpr(1) -= 56;
685		WriteMacInt32(gpr(1), sp);
686
687		// Save PowerPC registers
688	<	memcpy(Mac2HostAddr(gpr(1)+56), &gpr(13), sizeof(uint32)*(32-13));
688	>	uint32 saved_GPRs[19];
689	>	memcpy(&saved_GPRs[0], &gpr(13), sizeof(uint32)*(32-13));
690		#if SAVE_FP_EXEC_68K
691	<	memcpy(Mac2HostAddr(gpr(1)+56+19*4), &fpr(14), sizeof(double)*(32-14));
691	>	double saved_FPRs[18];
692	>	memcpy(&saved_FPRs[0], &fpr(14), sizeof(double)*(32-14));
693		#endif
694
695		// Setup registers for 68k emulator
#	Line 365 | Line 703 | void sheepshaver_cpu::execute_68k(uint32
703		gpr(25) = ReadMacInt32(XLM_68K_R25);            // MSB of SR
704		gpr(26) = 0;
705		gpr(28) = 0;                                                            // VBR
706	<	gpr(29) = kernel_data->ed.v[0x74 >> 2];         // Pointer to opcode table
707	<	gpr(30) = kernel_data->ed.v[0x78 >> 2];         // Address of emulator
706	>	gpr(29) = ntohl(kernel_data->ed.v[0x74 >> 2]);          // Pointer to opcode table
707	>	gpr(30) = ntohl(kernel_data->ed.v[0x78 >> 2]);          // Address of emulator
708		gpr(31) = KernelDataAddr + 0x1000;
709
710		// Push return address (points to EXEC_RETURN opcode) on stack
#	Line 398 | Line 736 | void sheepshaver_cpu::execute_68k(uint32
736		r->a[i] = gpr(16 + i);
737
738		// Restore PowerPC registers
739	<	memcpy(&gpr(13), Mac2HostAddr(gpr(1)+56), sizeof(uint32)*(32-13));
739	>	memcpy(&gpr(13), &saved_GPRs[0], sizeof(uint32)*(32-13));
740		#if SAVE_FP_EXEC_68K
741	<	memcpy(&fpr(14), Mac2HostAddr(gpr(1)+56+19*4), sizeof(double)*(32-14));
741	>	memcpy(&fpr(14), &saved_FPRs[0], sizeof(double)*(32-14));
742		#endif
743
744		// Cleanup stack
745	<	gpr(1) += 56 + 19*4 + 18*8;
745	>	gpr(1) += 56;
746
747		// Restore program counters and branch registers
748		pc() = saved_pc;
749		lr() = saved_lr;
750		ctr()= saved_ctr;
751	+	set_cr(saved_cr);
752	+
753	+	#if EMUL_TIME_STATS
754	+	exec68k_time += (clock() - exec68k_start);
755	+	#endif
756		}
757
758		// Call MacOS PPC code
759		uint32 sheepshaver_cpu::execute_macos_code(uint32 tvect, int nargs, uint32 const *args)
760		{
761	+	#if EMUL_TIME_STATS
762	+	macos_exec_count++;
763	+	const clock_t macos_exec_start = clock();
764	+	#endif
765	+
766		// Save program counters and branch registers
767		uint32 saved_pc = pc();
768		uint32 saved_lr = lr();
769		uint32 saved_ctr= ctr();
770
771		// Build trampoline with EXEC_RETURN
772	<	uint32 trampoline[] = { POWERPC_EMUL_OP | 1 };
773	<	lr() = (uint32)trampoline;
772	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
773	>	lr() = trampoline.addr();
774
775		gpr(1) -= 64;                                                           // Create stack frame
776		uint32 proc = ReadMacInt32(tvect);                      // Get routine address
#	Line 453 | Line 801 | uint32 sheepshaver_cpu::execute_macos_co
801		lr() = saved_lr;
802		ctr()= saved_ctr;
803
804	+	#if EMUL_TIME_STATS
805	+	macos_exec_time += (clock() - macos_exec_start);
806	+	#endif
807	+
808		return retval;
809		}
810
#	Line 461 | Line 813 | inline void sheepshaver_cpu::execute_ppc
813		{
814		// Save branch registers
815		uint32 saved_lr = lr();
464	–	uint32 saved_ctr= ctr();
816
817	<	const uint32 trampoline[] = { POWERPC_EMUL_OP | 1 };
817	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
818	>	WriteMacInt32(trampoline.addr(), POWERPC_EXEC_RETURN);
819	>	lr() = trampoline.addr();
820
468	–	lr() = (uint32)trampoline;
469	–	ctr()= entry;
821		execute(entry);
822
823		// Restore branch registers
824		lr() = saved_lr;
474	–	ctr()= saved_ctr;
825		}
826
827		// Resource Manager thunk
478	–	extern "C" void check_load_invoc(uint32 type, int16 id, uint16 **h);
479	–
828		inline void sheepshaver_cpu::get_resource(uint32 old_get_resource)
829		{
830		uint32 type = gpr(3);
#	Line 487 | Line 835 | inline void sheepshaver_cpu::get_resourc
835
836		// Call old routine
837		execute_ppc(old_get_resource);
490	–	uint16 **handle = (uint16 **)gpr(3);
838
839		// Call CheckLoad()
840	+	uint32 handle = gpr(3);
841		check_load_invoc(type, id, handle);
842	<	gpr(3) = (uint32)handle;
842	>	gpr(3) = handle;
843
844		// Cleanup stack
845		gpr(1) += 56;
#	Line 502 | Line 850 | inline void sheepshaver_cpu::get_resourc
850		*              SheepShaver CPU engine interface
851		**/
852
853	<	static sheepshaver_cpu *main_cpu = NULL;                // CPU emulator to handle usual control flow
854	<	static sheepshaver_cpu *interrupt_cpu = NULL;   // CPU emulator to handle interrupts
507	<	static sheepshaver_cpu *current_cpu = NULL;             // Current CPU emulator context
853	>	// PowerPC CPU emulator
854	>	static sheepshaver_cpu *ppc_cpu = NULL;
855
856	<	static inline void cpu_push(sheepshaver_cpu *new_cpu)
856	>	void FlushCodeCache(uintptr start, uintptr end)
857		{
858	<	#if MULTICORE_CPU
859	<	current_cpu = new_cpu;
513	<	#endif
514	<	}
515	<
516	<	static inline void cpu_pop()
517	<	{
518	<	#if MULTICORE_CPU
519	<	current_cpu = main_cpu;
520	<	#endif
858	>	D(bug("FlushCodeCache(%08x, %08x)\n", start, end));
859	>	ppc_cpu->invalidate_cache_range(start, end);
860		}
861
862		// Dump PPC registers
863		static void dump_registers(void)
864		{
865	<	current_cpu->dump_registers();
865	>	ppc_cpu->dump_registers();
866		}
867
868		// Dump log
869		static void dump_log(void)
870		{
871	<	current_cpu->dump_log();
871	>	ppc_cpu->dump_log();
872		}
873
874		/*
875		*  Initialize CPU emulation
876		*/
877
878	<	static struct sigaction sigsegv_action;
540	<
541	<	#if defined(__powerpc__)
542	<	#include <sys/ucontext.h>
543	<	#endif
544	<
545	<	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp)
878	>	static sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
879		{
547	–	const uintptr addr = (uintptr)sip->si_addr;
880		#if ENABLE_VOSF
881	<	// Handle screen fault.
882	<	extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
883	<	if (Screen_fault_handler((sigsegv_address_t)addr, SIGSEGV_INVALID_PC))
884	<	return;
881	>	// Handle screen fault
882	>	extern bool Screen_fault_handler(sigsegv_address_t, sigsegv_address_t);
883	>	if (Screen_fault_handler(fault_address, fault_instruction))
884	>	return SIGSEGV_RETURN_SUCCESS;
885		#endif
886	<	#if defined(__powerpc__)
887	<	if (addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
888	<	printf("IGNORE write access to ROM at %08x\n", addr);
889	<	(((ucontext_t *)scp)->uc_mcontext.regs)->nip += 4;
890	<	return;
891	<	}
892	<	if (addr >= 0xf3012000 && addr < 0xf3014000 && 0) {
893	<	printf("IGNORE write access to ROM at %08x\n", addr);
894	<	(((ucontext_t *)scp)->uc_mcontext.regs)->nip += 4;
895	<	return;
886	>
887	>	const uintptr addr = (uintptr)fault_address;
888	>	#if HAVE_SIGSEGV_SKIP_INSTRUCTION
889	>	// Ignore writes to ROM
890	>	if ((addr - ROM_BASE) < ROM_SIZE)
891	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
892	>
893	>	// Get program counter of target CPU
894	>	sheepshaver_cpu * const cpu = ppc_cpu;
895	>	const uint32 pc = cpu->pc();
896	>
897	>	// Fault in Mac ROM or RAM?
898	>	bool mac_fault = (pc >= ROM_BASE) && (pc < (ROM_BASE + ROM_AREA_SIZE)) || (pc >= RAMBase) && (pc < (RAMBase + RAMSize));
899	>	if (mac_fault) {
900	>
901	>	// "VM settings" during MacOS 8 installation
902	>	if (pc == ROM_BASE + 0x488160 && cpu->gpr(20) == 0xf8000000)
903	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
904	>
905	>	// MacOS 8.5 installation
906	>	else if (pc == ROM_BASE + 0x488140 && cpu->gpr(16) == 0xf8000000)
907	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
908	>
909	>	// MacOS 8 serial drivers on startup
910	>	else if (pc == ROM_BASE + 0x48e080 && (cpu->gpr(8) == 0xf3012002 || cpu->gpr(8) == 0xf3012000))
911	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
912	>
913	>	// MacOS 8.1 serial drivers on startup
914	>	else if (pc == ROM_BASE + 0x48c5e0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
915	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
916	>	else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
917	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
918	>
919	>	// Ignore writes to the zero page
920	>	else if ((uint32)(addr - SheepMem::ZeroPage()) < (uint32)SheepMem::PageSize())
921	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
922	>
923	>	// Ignore all other faults, if requested
924	>	if (PrefsFindBool("ignoresegv"))
925	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
926		}
565	–	#endif
566	–	printf("Caught SIGSEGV at address %p\n", sip->si_addr);
567	–	printf("Native PC: %08x\n", (((ucontext_t *)scp)->uc_mcontext.regs)->nip);
568	–	printf("Current CPU: %s\n", current_cpu == main_cpu ? "main" : "interrupts");
569	–	#if 1
570	–	dump_registers();
927		#else
928	<	printf("Main CPU context\n");
573	<	main_cpu->dump_registers();
574	<	printf("Interrupts CPU context\n");
575	<	interrupt_cpu->dump_registers();
928	>	#error "FIXME: You don't have the capability to skip instruction within signal handlers"
929		#endif
930	<	current_cpu->dump_log();
930	>
931	>	printf("SIGSEGV\n");
932	>	printf("  pc %p\n", fault_instruction);
933	>	printf("  ea %p\n", fault_address);
934	>	dump_registers();
935	>	ppc_cpu->dump_log();
936		enter_mon();
937		QuitEmulator();
938	+
939	+	return SIGSEGV_RETURN_FAILURE;
940		}
941
942		void init_emul_ppc(void)
943		{
944		// Initialize main CPU emulator
945	<	main_cpu = new sheepshaver_cpu();
946	<	main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
945	>	ppc_cpu = new sheepshaver_cpu();
946	>	ppc_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
947	>	ppc_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
948		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
949
950	<	#if MULTICORE_CPU
951	<	// Initialize alternate CPU emulator to handle interrupts
591	<	interrupt_cpu = new sheepshaver_cpu();
592	<	#endif
593	<
594	<	// Install SIGSEGV handler
595	<	sigemptyset(&sigsegv_action.sa_mask);
596	<	sigsegv_action.sa_sigaction = sigsegv_handler;
597	<	sigsegv_action.sa_flags = SA_SIGINFO;
598	<	sigsegv_action.sa_restorer = NULL;
599	<	sigaction(SIGSEGV, &sigsegv_action, NULL);
950	>	// Install the handler for SIGSEGV
951	>	sigsegv_install_handler(sigsegv_handler);
952
953		#if ENABLE_MON
954		// Install "regs" command in cxmon
955		mon_add_command("regs", dump_registers, "regs                     Dump PowerPC registers\n");
956		mon_add_command("log", dump_log, "log                      Dump PowerPC emulation log\n");
957		#endif
958	+
959	+	#if EMUL_TIME_STATS
960	+	emul_start_time = clock();
961	+	#endif
962	+	}
963	+
964	+	/*
965	+	*  Deinitialize emulation
966	+	*/
967	+
968	+	void exit_emul_ppc(void)
969	+	{
970	+	#if EMUL_TIME_STATS
971	+	clock_t emul_end_time = clock();
972	+
973	+	printf("### Statistics for SheepShaver emulation parts\n");
974	+	const clock_t emul_time = emul_end_time - emul_start_time;
975	+	printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
976	+	printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
977	+	(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
978	+
979	+	#define PRINT_STATS(LABEL, VAR_PREFIX) do {                                                             \
980	+	printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count);             \
981	+	printf("Total " LABEL " time  : %.1f sec (%.1f%%)\n",                   \
982	+	double(VAR_PREFIX##_time) / double(CLOCKS_PER_SEC),          \
983	+	100.0 * double(VAR_PREFIX##_time) / double(emul_time));      \
984	+	} while (0)
985	+
986	+	PRINT_STATS("Execute68k[Trap] execution", exec68k);
987	+	PRINT_STATS("NativeOp execution", native_exec);
988	+	PRINT_STATS("MacOS routine execution", macos_exec);
989	+
990	+	#undef PRINT_STATS
991	+	printf("\n");
992	+	#endif
993	+
994	+	delete ppc_cpu;
995		}
996
997	+	#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
998	+	// Initialize EmulOp trampolines
999	+	void init_emul_op_trampolines(basic_dyngen & dg)
1000	+	{
1001	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
1002	+	func_t func;
1003	+
1004	+	// EmulOp
1005	+	emul_op_trampoline = dg.gen_start();
1006	+	func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
1007	+	dg.gen_invoke_CPU_T0(func);
1008	+	dg.gen_exec_return();
1009	+	dg.gen_end();
1010	+
1011	+	// NativeOp
1012	+	native_op_trampoline = dg.gen_start();
1013	+	func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
1014	+	dg.gen_invoke_CPU_T0(func);
1015	+	dg.gen_exec_return();
1016	+	dg.gen_end();
1017	+
1018	+	D(bug("EmulOp trampoline:   %p\n", emul_op_trampoline));
1019	+	D(bug("NativeOp trampoline: %p\n", native_op_trampoline));
1020	+	}
1021	+	#endif
1022	+
1023		/*
1024		*  Emulation loop
1025		*/
1026
1027		void emul_ppc(uint32 entry)
1028		{
1029	<	current_cpu = main_cpu;
1030	<	current_cpu->start_log();
1031	<	current_cpu->execute(entry);
1029	>	#if 0
1030	>	ppc_cpu->start_log();
1031	>	#endif
1032	>	// start emulation loop and enable code translation or caching
1033	>	ppc_cpu->execute(entry);
1034		}
1035
1036		/*
1037		*  Handle PowerPC interrupt
1038		*/
1039
623	–	// Atomic operations
624	–	extern int atomic_add(int *var, int v);
625	–	extern int atomic_and(int *var, int v);
626	–	extern int atomic_or(int *var, int v);
627	–
1040		void TriggerInterrupt(void)
1041		{
1042		#if 0
1043		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
1044		#else
1045	<	SPCFLAGS_SET( SPCFLAG_INT );
1045	>	// Trigger interrupt to main cpu only
1046	>	if (ppc_cpu)
1047	>	ppc_cpu->trigger_interrupt();
1048		#endif
1049		}
1050
1051	<	static void HandleInterrupt(void)
1051	>	void sheepshaver_cpu::handle_interrupt(void)
1052		{
1053		// Do nothing if interrupts are disabled
1054	<	if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
1054	>	if (*(int32 *)XLM_IRQ_NEST > 0)
1055		return;
1056
1057		// Do nothing if there is no interrupt pending
1058		if (InterruptFlags == 0)
1059		return;
1060
1061	+	// Current interrupt nest level
1062	+	static int interrupt_depth = 0;
1063	+	++interrupt_depth;
1064	+
1065		// Disable MacOS stack sniffer
1066		WriteMacInt32(0x110, 0);
1067
#	Line 651 | Line 1069 | static void HandleInterrupt(void)
1069		switch (ReadMacInt32(XLM_RUN_MODE)) {
1070		case MODE_68K:
1071		// 68k emulator active, trigger 68k interrupt level 1
654	–	assert(current_cpu == main_cpu);
1072		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1073	<	main_cpu->set_cr(main_cpu->get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
1073	>	set_cr(get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
1074		break;
1075
1076		#if INTERRUPTS_IN_NATIVE_MODE
1077		case MODE_NATIVE:
1078		// 68k emulator inactive, in nanokernel?
1079	<	assert(current_cpu == main_cpu);
1080	<	if (main_cpu->gpr(1) != KernelDataAddr) {
1079	>	if (gpr(1) != KernelDataAddr && interrupt_depth == 1) {
1080	>	interrupt_context ctx(this, "PowerPC mode");
1081	>
1082		// Prepare for 68k interrupt level 1
1083		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1084		WriteMacInt32(tswap32(kernel_data->v[0x658 >> 2]) + 0xdc,
#	Line 669 | Line 1087 | static void HandleInterrupt(void)
1087
1088		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1089		DisableInterrupt();
672	–	cpu_push(interrupt_cpu);
1090		if (ROMType == ROMTYPE_NEWWORLD)
1091	<	current_cpu->interrupt(ROM_BASE + 0x312b1c, main_cpu);
1091	>	ppc_cpu->interrupt(ROM_BASE + 0x312b1c);
1092		else
1093	<	current_cpu->interrupt(ROM_BASE + 0x312a3c, main_cpu);
677	<	cpu_pop();
1093	>	ppc_cpu->interrupt(ROM_BASE + 0x312a3c);
1094		}
1095		break;
1096		#endif
#	Line 683 | Line 1099 | static void HandleInterrupt(void)
1099		case MODE_EMUL_OP:
1100		// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
1101		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1102	+	interrupt_context ctx(this, "68k mode");
1103		#if 1
1104		// Execute full 68k interrupt routine
1105		M68kRegisters r;
#	Line 704 | Line 1121 | static void HandleInterrupt(void)
1121		if (InterruptFlags & INTFLAG_VIA) {
1122		ClearInterruptFlag(INTFLAG_VIA);
1123		ADBInterrupt();
1124	<	ExecutePPC(VideoVBL);
1124	>	ExecuteNative(NATIVE_VIDEO_VBL);
1125		}
1126		}
1127		#endif
#	Line 712 | Line 1129 | static void HandleInterrupt(void)
1129		break;
1130		#endif
1131		}
715	–	}
716	–
717	–	/*
718	–	*  Execute NATIVE_OP opcode (called by PowerPC emulator)
719	–	*/
720	–
721	–	#define POWERPC_NATIVE_OP_INIT(LR, OP) \
722	–	tswap32(POWERPC_EMUL_OP | ((LR) << 11) | (((uint32)OP) << 6) | 2)
1132
1133	<	// FIXME: Make sure 32-bit relocations are used
1134	<	const uint32 NativeOpTable[NATIVE_OP_MAX] = {
1135	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_PATCH_NAME_REGISTRY),
727	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_INSTALL_ACCEL),
728	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_VBL),
729	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_DO_DRIVER_IO),
730	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_IRQ),
731	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_INIT),
732	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_TERM),
733	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_OPEN),
734	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_CLOSE),
735	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_WPUT),
736	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_RSRV),
737	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_NOTHING),
738	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_OPEN),
739	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_PRIME_IN),
740	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_PRIME_OUT),
741	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_CONTROL),
742	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_STATUS),
743	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_CLOSE),
744	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_RESOURCE),
745	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_1_RESOURCE),
746	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_IND_RESOURCE),
747	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_1_IND_RESOURCE),
748	<	POWERPC_NATIVE_OP_INIT(1, NATIVE_R_GET_RESOURCE),
749	<	POWERPC_NATIVE_OP_INIT(0, NATIVE_DISABLE_INTERRUPT),
750	<	POWERPC_NATIVE_OP_INIT(0, NATIVE_ENABLE_INTERRUPT),
751	<	};
1133	>	// We are done with this interrupt
1134	>	--interrupt_depth;
1135	>	}
1136
1137		static void get_resource(void);
1138		static void get_1_resource(void);
#	Line 756 | Line 1140 | static void get_ind_resource(void);
1140		static void get_1_ind_resource(void);
1141		static void r_get_resource(void);
1142
1143	<	#define GPR(REG) current_cpu->gpr(REG)
1144	<
761	<	static void NativeOp(int selector)
1143	>	// Execute NATIVE_OP routine
1144	>	void sheepshaver_cpu::execute_native_op(uint32 selector)
1145		{
1146	+	#if EMUL_TIME_STATS
1147	+	native_exec_count++;
1148	+	const clock_t native_exec_start = clock();
1149	+	#endif
1150	+
1151		switch (selector) {
1152		case NATIVE_PATCH_NAME_REGISTRY:
1153		DoPatchNameRegistry();
#	Line 771 | Line 1159 | static void NativeOp(int selector)
1159		VideoVBL();
1160		break;
1161		case NATIVE_VIDEO_DO_DRIVER_IO:
1162	<	GPR(3) = (int32)(int16)VideoDoDriverIO((void *)GPR(3), (void *)GPR(4),
1163	<	(void *)GPR(5), GPR(6), GPR(7));
1162	>	gpr(3) = (int32)(int16)VideoDoDriverIO((void *)gpr(3), (void *)gpr(4),
1163	>	(void *)gpr(5), gpr(6), gpr(7));
1164		break;
1165	<	case NATIVE_GET_RESOURCE:
1166	<	get_resource();
1165	>	#ifdef WORDS_BIGENDIAN
1166	>	case NATIVE_ETHER_IRQ:
1167	>	EtherIRQ();
1168		break;
1169	<	case NATIVE_GET_1_RESOURCE:
1170	<	get_1_resource();
1169	>	case NATIVE_ETHER_INIT:
1170	>	gpr(3) = InitStreamModule((void *)gpr(3));
1171		break;
1172	<	case NATIVE_GET_IND_RESOURCE:
1173	<	get_ind_resource();
1172	>	case NATIVE_ETHER_TERM:
1173	>	TerminateStreamModule();
1174		break;
1175	<	case NATIVE_GET_1_IND_RESOURCE:
1176	<	get_1_ind_resource();
1175	>	case NATIVE_ETHER_OPEN:
1176	>	gpr(3) = ether_open((queue_t *)gpr(3), (void *)gpr(4), gpr(5), gpr(6), (void*)gpr(7));
1177	>	break;
1178	>	case NATIVE_ETHER_CLOSE:
1179	>	gpr(3) = ether_close((queue_t *)gpr(3), gpr(4), (void *)gpr(5));
1180	>	break;
1181	>	case NATIVE_ETHER_WPUT:
1182	>	gpr(3) = ether_wput((queue_t *)gpr(3), (mblk_t *)gpr(4));
1183	>	break;
1184	>	case NATIVE_ETHER_RSRV:
1185	>	gpr(3) = ether_rsrv((queue_t *)gpr(3));
1186	>	break;
1187	>	#else
1188	>	case NATIVE_ETHER_INIT:
1189	>	// FIXME: needs more complicated thunks
1190	>	gpr(3) = false;
1191	>	break;
1192	>	#endif
1193	>	case NATIVE_SYNC_HOOK:
1194	>	gpr(3) = NQD_sync_hook(gpr(3));
1195	>	break;
1196	>	case NATIVE_BITBLT_HOOK:
1197	>	gpr(3) = NQD_bitblt_hook(gpr(3));
1198	>	break;
1199	>	case NATIVE_BITBLT:
1200	>	NQD_bitblt(gpr(3));
1201	>	break;
1202	>	case NATIVE_FILLRECT_HOOK:
1203	>	gpr(3) = NQD_fillrect_hook(gpr(3));
1204		break;
1205	<	case NATIVE_R_GET_RESOURCE:
1206	<	r_get_resource();
1205	>	case NATIVE_INVRECT:
1206	>	NQD_invrect(gpr(3));
1207	>	break;
1208	>	case NATIVE_FILLRECT:
1209	>	NQD_fillrect(gpr(3));
1210		break;
1211		case NATIVE_SERIAL_NOTHING:
1212		case NATIVE_SERIAL_OPEN:
#	Line 806 | Line 1225 | static void NativeOp(int selector)
1225		SerialStatus,
1226		SerialClose
1227		};
1228	<	GPR(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](GPR(3), GPR(4));
1228	>	gpr(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](gpr(3), gpr(4));
1229	>	break;
1230	>	}
1231	>	case NATIVE_GET_RESOURCE:
1232	>	case NATIVE_GET_1_RESOURCE:
1233	>	case NATIVE_GET_IND_RESOURCE:
1234	>	case NATIVE_GET_1_IND_RESOURCE:
1235	>	case NATIVE_R_GET_RESOURCE: {
1236	>	typedef void (*GetResourceCallback)(void);
1237	>	static const GetResourceCallback get_resource_callbacks[] = {
1238	>	::get_resource,
1239	>	::get_1_resource,
1240	>	::get_ind_resource,
1241	>	::get_1_ind_resource,
1242	>	::r_get_resource
1243	>	};
1244	>	get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1245		break;
1246		}
1247		case NATIVE_DISABLE_INTERRUPT:
#	Line 815 | Line 1250 | static void NativeOp(int selector)
1250		case NATIVE_ENABLE_INTERRUPT:
1251		EnableInterrupt();
1252		break;
1253	+	case NATIVE_MAKE_EXECUTABLE:
1254	+	MakeExecutable(0, (void *)gpr(4), gpr(5));
1255	+	break;
1256	+	case NATIVE_CHECK_LOAD_INVOC:
1257	+	check_load_invoc(gpr(3), gpr(4), gpr(5));
1258	+	break;
1259		default:
1260		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
1261		QuitEmulator();
1262		break;
1263		}
823	–	}
824	–
825	–	/*
826	–	*  Execute native subroutine (LR must contain return address)
827	–	*/
1264
1265	<	void ExecuteNative(int selector)
1266	<	{
1267	<	uint32 tvect[2];
832	<	tvect[0] = tswap32(POWERPC_NATIVE_OP_FUNC(selector));
833	<	tvect[1] = 0; // Fake TVECT
834	<	RoutineDescriptor desc = BUILD_PPC_ROUTINE_DESCRIPTOR(0, tvect);
835	<	M68kRegisters r;
836	<	Execute68k((uint32)&desc, &r);
1265	>	#if EMUL_TIME_STATS
1266	>	native_exec_time += (clock() - native_exec_start);
1267	>	#endif
1268		}
1269
1270		/*
#	Line 844 | Line 1275 | void ExecuteNative(int selector)
1275
1276		void Execute68k(uint32 pc, M68kRegisters *r)
1277		{
1278	<	current_cpu->execute_68k(pc, r);
1278	>	ppc_cpu->execute_68k(pc, r);
1279		}
1280
1281		/*
#	Line 854 | Line 1285 | void Execute68k(uint32 pc, M68kRegisters
1285
1286		void Execute68kTrap(uint16 trap, M68kRegisters *r)
1287		{
1288	<	uint16 proc[2] = {trap, M68K_RTS};
1289	<	Execute68k((uint32)proc, r);
1288	>	SheepVar proc_var(4);
1289	>	uint32 proc = proc_var.addr();
1290	>	WriteMacInt16(proc, trap);
1291	>	WriteMacInt16(proc + 2, M68K_RTS);
1292	>	Execute68k(proc, r);
1293		}
1294
1295		/*
#	Line 864 | Line 1298 | void Execute68kTrap(uint16 trap, M68kReg
1298
1299		uint32 call_macos(uint32 tvect)
1300		{
1301	<	return current_cpu->execute_macos_code(tvect, 0, NULL);
1301	>	return ppc_cpu->execute_macos_code(tvect, 0, NULL);
1302		}
1303
1304		uint32 call_macos1(uint32 tvect, uint32 arg1)
1305		{
1306		const uint32 args[] = { arg1 };
1307	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1307	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1308		}
1309
1310		uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2)
1311		{
1312		const uint32 args[] = { arg1, arg2 };
1313	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1313	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1314		}
1315
1316		uint32 call_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3)
1317		{
1318		const uint32 args[] = { arg1, arg2, arg3 };
1319	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1319	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1320		}
1321
1322		uint32 call_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4)
1323		{
1324		const uint32 args[] = { arg1, arg2, arg3, arg4 };
1325	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1325	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1326		}
1327
1328		uint32 call_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5)
1329		{
1330		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5 };
1331	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1331	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1332		}
1333
1334		uint32 call_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6)
1335		{
1336		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6 };
1337	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1337	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1338		}
1339
1340		uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7)
1341		{
1342		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 };
1343	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
910	<	}
911	<
912	<	/*
913	<	*  Atomic operations
914	<	*/
915	<
916	<	int atomic_add(int *var, int v)
917	<	{
918	<	int ret = *var;
919	<	*var += v;
920	<	return ret;
921	<	}
922	<
923	<	int atomic_and(int *var, int v)
924	<	{
925	<	int ret = *var;
926	<	*var &= v;
927	<	return ret;
928	<	}
929	<
930	<	int atomic_or(int *var, int v)
931	<	{
932	<	int ret = *var;
933	<	*var |= v;
934	<	return ret;
1343	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1344		}
1345
1346		/*
#	Line 940 | Line 1349 | int atomic_or(int *var, int v)
1349
1350		void get_resource(void)
1351		{
1352	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1352	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1353		}
1354
1355		void get_1_resource(void)
1356		{
1357	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1357	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1358		}
1359
1360		void get_ind_resource(void)
1361		{
1362	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1362	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1363		}
1364
1365		void get_1_ind_resource(void)
1366		{
1367	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1367	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1368		}
1369
1370		void r_get_resource(void)
1371		{
1372	<	current_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1372	>	ppc_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1373		}

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