[ViewVC] Diff of: cebix/SheepShaver/src/kpx_cpu/sheepshaver

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.21 by gbeauche, 2003-12-04T17:26:38Z vs.
Revision 1.62 by gbeauche, 2005-06-30T07:34:17Z

#	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) 1997-2005 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 38 \| Line 38
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	+	#ifdef HAVE_MALLOC_H
46	+	#include <malloc.h>
47	+	#endif
48	+
49	+	#ifdef USE_SDL_VIDEO
50	+	#include <SDL_events.h>
51	+	#endif
52
53		#if ENABLE_MON
54		#include "mon.h"
#	Line 50 \| Line 59
59		#include "debug.h"
60
61		// Emulation time statistics
62	<	#define EMUL_TIME_STATS 1
62	>	#ifndef EMUL_TIME_STATS
63	>	#define EMUL_TIME_STATS 0
64	>	#endif
65
66		#if EMUL_TIME_STATS
67		static clock_t emul_start_time;
68	<	static uint32 interrupt_count = 0;
68	>	static uint32 interrupt_count = 0, ppc_interrupt_count = 0;
69		static clock_t interrupt_time = 0;
70		static uint32 exec68k_count = 0;
71		static clock_t exec68k_time = 0;
#	Line 73 \| Line 84 \| static void enter_mon(void)
84		#endif
85		}
86
87	+	// From main_*.cpp
88	+	extern uintptr SignalStackBase();
89	+
90	+	// From rsrc_patches.cpp
91	+	extern "C" void check_load_invoc(uint32 type, int16 id, uint32 h);
92	+
93		// PowerPC EmulOp to exit from emulation looop
94		const uint32 POWERPC_EXEC_RETURN = POWERPC_EMUL_OP \| 1;
95
79	–	// Enable multicore (main/interrupts) cpu emulation?
80	–	#define MULTICORE_CPU (ASYNC_IRQ ? 1 : 0)
81	–
96		// Enable Execute68k() safety checks?
97		#define SAFE_EXEC_68K 1
98
#	Line 92 \| Line 106 \| const uint32 POWERPC_EXEC_RETURN = POWER
106		#define INTERRUPTS_IN_NATIVE_MODE 1
107
108		// Pointer to Kernel Data
109	<	static KernelData * const kernel_data = (KernelData *)KERNEL_DATA_BASE;
109	>	static KernelData * kernel_data;
110
111		// SIGSEGV handler
112	<	static sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
112	>	sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
113	>
114	>	#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
115	>	// Special trampolines for EmulOp and NativeOp
116	>	static uint8 *emul_op_trampoline;
117	>	static uint8 *native_op_trampoline;
118	>	#endif
119
120		// JIT Compiler enabled?
121		static inline bool enable_jit_p()
#	Line 124 \| Line 144 \| public:
144		// Constructor
145		sheepshaver_cpu();
146
147	<	// Condition Register accessors
147	>	// CR & XER accessors
148		uint32 get_cr() const { return cr().get(); }
149		void set_cr(uint32 v) { cr().set(v); }
150	+	uint32 get_xer() const { return xer().get(); }
151	+	void set_xer(uint32 v) { xer().set(v); }
152	+
153	+	// Execute NATIVE_OP routine
154	+	void execute_native_op(uint32 native_op);
155	+
156	+	// Execute EMUL_OP routine
157	+	void execute_emul_op(uint32 emul_op);
158
159		// Execute 68k routine
160		void execute_68k(uint32 entry, M68kRegisters *r);
#	Line 137 \| Line 165 \| public:
165		// Execute MacOS/PPC code
166		uint32 execute_macos_code(uint32 tvect, int nargs, uint32 const *args);
167
168	+	#if PPC_ENABLE_JIT
169	+	// Compile one instruction
170	+	virtual int compile1(codegen_context_t & cg_context);
171	+	#endif
172		// Resource manager thunk
173		void get_resource(uint32 old_get_resource);
174
175		// Handle MacOS interrupt
176		void interrupt(uint32 entry);
145	–	void handle_interrupt();
146	–
147	–	// Lazy memory allocator (one item at a time)
148	–	void *operator new(size_t size)
149	–	{ return allocator_helper< sheepshaver_cpu, lazy_allocator >::allocate(); }
150	–	void operator delete(void *p)
151	–	{ allocator_helper< sheepshaver_cpu, lazy_allocator >::deallocate(p); }
152	–	// FIXME: really make surre array allocation fail at link time?
153	–	void *operator new[](size_t);
154	–	void operator delete[](void *p);
177
178		// Make sure the SIGSEGV handler can access CPU registers
179		friend sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
180	+
181	+	// Memory allocator returning areas aligned on 16-byte boundaries
182	+	void *operator new(size_t size);
183	+	void operator delete(void *p);
184		};
185
186	<	lazy_allocator< sheepshaver_cpu > allocator_helper< sheepshaver_cpu, lazy_allocator >::allocator;
186	>	// Memory allocator returning sheepshaver_cpu objects aligned on 16-byte boundaries
187	>	// FORMAT: [ alignment ] magic identifier, offset to malloc'ed data, sheepshaver_cpu data
188	>	void *sheepshaver_cpu::operator new(size_t size)
189	>	{
190	>	const int ALIGN = 16;
191	>
192	>	// Allocate enough space for sheepshaver_cpu data + signature + align pad
193	>	uint8 ptr = (uint8 )malloc(size + ALIGN * 2);
194	>	if (ptr == NULL)
195	>	throw std::bad_alloc();
196	>
197	>	// Align memory
198	>	int ofs = 0;
199	>	while ((((uintptr)ptr) % ALIGN) != 0)
200	>	ofs++, ptr++;
201	>
202	>	// Insert signature and offset
203	>	struct aligned_block_t {
204	>	uint32 pad[(ALIGN - 8) / 4];
205	>	uint32 signature;
206	>	uint32 offset;
207	>	uint8 data[sizeof(sheepshaver_cpu)];
208	>	};
209	>	aligned_block_t blk = (aligned_block_t )ptr;
210	>	blk->signature = FOURCC('S','C','P','U');
211	>	blk->offset = ofs + (&blk->data[0] - (uint8 *)blk);
212	>	assert((((uintptr)&blk->data) % ALIGN) == 0);
213	>	return &blk->data[0];
214	>	}
215	>
216	>	void sheepshaver_cpu::operator delete(void *p)
217	>	{
218	>	uint32 blk = (uint32 )p;
219	>	assert(blk[-2] == FOURCC('S','C','P','U'));
220	>	void ptr = (void )(((uintptr)p) - blk[-1]);
221	>	free(ptr);
222	>	}
223
224		sheepshaver_cpu::sheepshaver_cpu()
225		: powerpc_cpu(enable_jit_p())
#	Line 167 \| Line 229 \| sheepshaver_cpu::sheepshaver_cpu()
229
230		void sheepshaver_cpu::init_decoder()
231		{
170	–	#ifndef PPC_NO_STATIC_II_INDEX_TABLE
171	–	static bool initialized = false;
172	–	if (initialized)
173	–	return;
174	–	initialized = true;
175	–	#endif
176	–
232		static const instr_info_t sheep_ii_table[] = {
233		{ "sheep",
234		(execute_pmf)&sheepshaver_cpu::execute_sheep,
#	Line 192 \| Line 247 \| void sheepshaver_cpu::init_decoder()
247		}
248		}
249
195	–	// Forward declaration for native opcode handler
196	–	static void NativeOp(int selector);
197	–
250		/* NativeOp instruction format:
251	<	+------------+--------------------------+--+----------+------------+
252	<	\| 6 \| \|FN\| OP \| 2 \|
253	<	+------------+--------------------------+--+----------+------------+
254	<	0 5 \|6 19 20 21 25 26 31
251	>	+------------+-------------------------+--+-----------+------------+
252	>	\| 6 \| \|FN\| OP \| 2 \|
253	>	+------------+-------------------------+--+-----------+------------+
254	>	0 5 \|6 18 19 20 25 26 31
255		*/
256
257	<	typedef bit_field< 20, 20 > FN_field;
258	<	typedef bit_field< 21, 25 > NATIVE_OP_field;
257	>	typedef bit_field< 19, 19 > FN_field;
258	>	typedef bit_field< 20, 25 > NATIVE_OP_field;
259		typedef bit_field< 26, 31 > EMUL_OP_field;
260
261	+	// Execute EMUL_OP routine
262	+	void sheepshaver_cpu::execute_emul_op(uint32 emul_op)
263	+	{
264	+	M68kRegisters r68;
265	+	WriteMacInt32(XLM_68K_R25, gpr(25));
266	+	WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
267	+	for (int i = 0; i < 8; i++)
268	+	r68.d[i] = gpr(8 + i);
269	+	for (int i = 0; i < 7; i++)
270	+	r68.a[i] = gpr(16 + i);
271	+	r68.a[7] = gpr(1);
272	+	uint32 saved_cr = get_cr() & 0xff9fffff; // mask_operand::compute(11, 8)
273	+	uint32 saved_xer = get_xer();
274	+	EmulOp(&r68, gpr(24), emul_op);
275	+	set_cr(saved_cr);
276	+	set_xer(saved_xer);
277	+	for (int i = 0; i < 8; i++)
278	+	gpr(8 + i) = r68.d[i];
279	+	for (int i = 0; i < 7; i++)
280	+	gpr(16 + i) = r68.a[i];
281	+	gpr(1) = r68.a[7];
282	+	WriteMacInt32(XLM_RUN_MODE, MODE_68K);
283	+	}
284	+
285		// Execute SheepShaver instruction
286		void sheepshaver_cpu::execute_sheep(uint32 opcode)
287		{
#	Line 222 \| Line 298 \| void sheepshaver_cpu::execute_sheep(uint
298		break;
299
300		case 2: // EXEC_NATIVE
301	<	NativeOp(NATIVE_OP_field::extract(opcode));
301	>	execute_native_op(NATIVE_OP_field::extract(opcode));
302		if (FN_field::test(opcode))
303		pc() = lr();
304		else
305		pc() += 4;
306		break;
307
308	<	default: { // EMUL_OP
309	<	M68kRegisters r68;
234	<	WriteMacInt32(XLM_68K_R25, gpr(25));
235	<	WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
236	<	for (int i = 0; i < 8; i++)
237	<	r68.d[i] = gpr(8 + i);
238	<	for (int i = 0; i < 7; i++)
239	<	r68.a[i] = gpr(16 + i);
240	<	r68.a[7] = gpr(1);
241	<	EmulOp(&r68, gpr(24), EMUL_OP_field::extract(opcode) - 3);
242	<	for (int i = 0; i < 8; i++)
243	<	gpr(8 + i) = r68.d[i];
244	<	for (int i = 0; i < 7; i++)
245	<	gpr(16 + i) = r68.a[i];
246	<	gpr(1) = r68.a[7];
247	<	WriteMacInt32(XLM_RUN_MODE, MODE_68K);
308	>	default: // EMUL_OP
309	>	execute_emul_op(EMUL_OP_field::extract(opcode) - 3);
310		pc() += 4;
311		break;
312		}
313	+	}
314	+
315	+	// Compile one instruction
316	+	#if PPC_ENABLE_JIT
317	+	int sheepshaver_cpu::compile1(codegen_context_t & cg_context)
318	+	{
319	+	const instr_info_t *ii = cg_context.instr_info;
320	+	if (ii->mnemo != PPC_I(SHEEP))
321	+	return COMPILE_FAILURE;
322	+
323	+	int status = COMPILE_FAILURE;
324	+	powerpc_dyngen & dg = cg_context.codegen;
325	+	uint32 opcode = cg_context.opcode;
326	+
327	+	switch (opcode & 0x3f) {
328	+	case 0: // EMUL_RETURN
329	+	dg.gen_invoke(QuitEmulator);
330	+	status = COMPILE_CODE_OK;
331	+	break;
332	+
333	+	case 1: // EXEC_RETURN
334	+	dg.gen_spcflags_set(SPCFLAG_CPU_EXEC_RETURN);
335	+	// Don't check for pending interrupts, we do know we have to
336	+	// get out of this block ASAP
337	+	dg.gen_exec_return();
338	+	status = COMPILE_EPILOGUE_OK;
339	+	break;
340	+
341	+	case 2: { // EXEC_NATIVE
342	+	uint32 selector = NATIVE_OP_field::extract(opcode);
343	+	switch (selector) {
344	+	#if !PPC_REENTRANT_JIT
345	+	// Filter out functions that may invoke Execute68k() or
346	+	// CallMacOS(), this would break reentrancy as they could
347	+	// invalidate the translation cache and even overwrite
348	+	// continuation code when we are done with them.
349	+	case NATIVE_PATCH_NAME_REGISTRY:
350	+	dg.gen_invoke(DoPatchNameRegistry);
351	+	status = COMPILE_CODE_OK;
352	+	break;
353	+	case NATIVE_VIDEO_INSTALL_ACCEL:
354	+	dg.gen_invoke(VideoInstallAccel);
355	+	status = COMPILE_CODE_OK;
356	+	break;
357	+	case NATIVE_VIDEO_VBL:
358	+	dg.gen_invoke(VideoVBL);
359	+	status = COMPILE_CODE_OK;
360	+	break;
361	+	case NATIVE_GET_RESOURCE:
362	+	case NATIVE_GET_1_RESOURCE:
363	+	case NATIVE_GET_IND_RESOURCE:
364	+	case NATIVE_GET_1_IND_RESOURCE:
365	+	case NATIVE_R_GET_RESOURCE: {
366	+	static const uint32 get_resource_ptr[] = {
367	+	XLM_GET_RESOURCE,
368	+	XLM_GET_1_RESOURCE,
369	+	XLM_GET_IND_RESOURCE,
370	+	XLM_GET_1_IND_RESOURCE,
371	+	XLM_R_GET_RESOURCE
372	+	};
373	+	uint32 old_get_resource = ReadMacInt32(get_resource_ptr[selector - NATIVE_GET_RESOURCE]);
374	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
375	+	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::get_resource).ptr();
376	+	dg.gen_invoke_CPU_im(func, old_get_resource);
377	+	status = COMPILE_CODE_OK;
378	+	break;
379	+	}
380	+	case NATIVE_CHECK_LOAD_INVOC:
381	+	dg.gen_load_T0_GPR(3);
382	+	dg.gen_load_T1_GPR(4);
383	+	dg.gen_se_16_32_T1();
384	+	dg.gen_load_T2_GPR(5);
385	+	dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc);
386	+	status = COMPILE_CODE_OK;
387	+	break;
388	+	#endif
389	+	case NATIVE_BITBLT:
390	+	dg.gen_load_T0_GPR(3);
391	+	dg.gen_invoke_T0((void (*)(uint32))NQD_bitblt);
392	+	status = COMPILE_CODE_OK;
393	+	break;
394	+	case NATIVE_INVRECT:
395	+	dg.gen_load_T0_GPR(3);
396	+	dg.gen_invoke_T0((void (*)(uint32))NQD_invrect);
397	+	status = COMPILE_CODE_OK;
398	+	break;
399	+	case NATIVE_FILLRECT:
400	+	dg.gen_load_T0_GPR(3);
401	+	dg.gen_invoke_T0((void (*)(uint32))NQD_fillrect);
402	+	status = COMPILE_CODE_OK;
403	+	break;
404	+	}
405	+	// Could we fully translate this NativeOp?
406	+	if (status == COMPILE_CODE_OK) {
407	+	if (!FN_field::test(opcode))
408	+	cg_context.done_compile = false;
409	+	else {
410	+	dg.gen_load_A0_LR();
411	+	dg.gen_set_PC_A0();
412	+	cg_context.done_compile = true;
413	+	}
414	+	break;
415	+	}
416	+	#if PPC_REENTRANT_JIT
417	+	// Try to execute NativeOp trampoline
418	+	if (!FN_field::test(opcode))
419	+	dg.gen_set_PC_im(cg_context.pc + 4);
420	+	else {
421	+	dg.gen_load_A0_LR();
422	+	dg.gen_set_PC_A0();
423	+	}
424	+	dg.gen_mov_32_T0_im(selector);
425	+	dg.gen_jmp(native_op_trampoline);
426	+	cg_context.done_compile = true;
427	+	status = COMPILE_EPILOGUE_OK;
428	+	break;
429	+	#endif
430	+	// Invoke NativeOp handler
431	+	if (!FN_field::test(opcode)) {
432	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
433	+	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
434	+	dg.gen_invoke_CPU_im(func, selector);
435	+	cg_context.done_compile = false;
436	+	status = COMPILE_CODE_OK;
437	+	}
438	+	// Otherwise, let it generate a call to execute_sheep() which
439	+	// will cause necessary updates to the program counter
440	+	break;
441	+	}
442	+
443	+	default: { // EMUL_OP
444	+	uint32 emul_op = EMUL_OP_field::extract(opcode) - 3;
445	+	#if PPC_REENTRANT_JIT
446	+	// Try to execute EmulOp trampoline
447	+	dg.gen_set_PC_im(cg_context.pc + 4);
448	+	dg.gen_mov_32_T0_im(emul_op);
449	+	dg.gen_jmp(emul_op_trampoline);
450	+	cg_context.done_compile = true;
451	+	status = COMPILE_EPILOGUE_OK;
452	+	break;
453	+	#endif
454	+	// Invoke EmulOp handler
455	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
456	+	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
457	+	dg.gen_invoke_CPU_im(func, emul_op);
458	+	cg_context.done_compile = false;
459	+	status = COMPILE_CODE_OK;
460	+	break;
461	+	}
462		}
463	+	return status;
464		}
465	+	#endif
466
467		// Handle MacOS interrupt
468		void sheepshaver_cpu::interrupt(uint32 entry)
469		{
470		#if EMUL_TIME_STATS
471	<	interrupt_count++;
471	>	ppc_interrupt_count++;
472		const clock_t interrupt_start = clock();
473		#endif
474
262	–	#if !MULTICORE_CPU
475		// Save program counters and branch registers
476		uint32 saved_pc = pc();
477		uint32 saved_lr = lr();
478		uint32 saved_ctr= ctr();
479		uint32 saved_sp = gpr(1);
268	–	#endif
480
481		// Initialize stack pointer to SheepShaver alternate stack base
482	<	SheepArray<64> stack_area;
272	<	gpr(1) = stack_area.addr();
482	>	gpr(1) = SignalStackBase() - 64;
483
484		// Build trampoline to return from interrupt
485		SheepVar32 trampoline = POWERPC_EXEC_RETURN;
#	Line 306 \| Line 516 \| void sheepshaver_cpu::interrupt(uint32 e
516		// Enter nanokernel
517		execute(entry);
518
309	–	#if !MULTICORE_CPU
519		// Restore program counters and branch registers
520		pc() = saved_pc;
521		lr() = saved_lr;
522		ctr()= saved_ctr;
523		gpr(1) = saved_sp;
315	–	#endif
524
525		#if EMUL_TIME_STATS
526		interrupt_time += (clock() - interrupt_start);
#	Line 485 \| Line 693 \| inline void sheepshaver_cpu::execute_ppc
693		}
694
695		// Resource Manager thunk
488	–	extern "C" void check_load_invoc(uint32 type, int16 id, uint32 h);
489	–
696		inline void sheepshaver_cpu::get_resource(uint32 old_get_resource)
697		{
698		uint32 type = gpr(3);
#	Line 512 \| Line 718 \| inline void sheepshaver_cpu::get_resourc
718		* SheepShaver CPU engine interface
719		**/
720
721	<	static sheepshaver_cpu *main_cpu = NULL; // CPU emulator to handle usual control flow
722	<	static sheepshaver_cpu *interrupt_cpu = NULL; // CPU emulator to handle interrupts
517	<	static sheepshaver_cpu *current_cpu = NULL; // Current CPU emulator context
721	>	// PowerPC CPU emulator
722	>	static sheepshaver_cpu *ppc_cpu = NULL;
723
724		void FlushCodeCache(uintptr start, uintptr end)
725		{
726		D(bug("FlushCodeCache(%08x, %08x)\n", start, end));
727	<	main_cpu->invalidate_cache_range(start, end);
523	<	#if MULTICORE_CPU
524	<	interrupt_cpu->invalidate_cache_range(start, end);
525	<	#endif
526	<	}
527	<
528	<	static inline void cpu_push(sheepshaver_cpu *new_cpu)
529	<	{
530	<	#if MULTICORE_CPU
531	<	current_cpu = new_cpu;
532	<	#endif
533	<	}
534	<
535	<	static inline void cpu_pop()
536	<	{
537	<	#if MULTICORE_CPU
538	<	current_cpu = main_cpu;
539	<	#endif
727	>	ppc_cpu->invalidate_cache_range(start, end);
728		}
729
730		// Dump PPC registers
731		static void dump_registers(void)
732		{
733	<	current_cpu->dump_registers();
733	>	ppc_cpu->dump_registers();
734		}
735
736		// Dump log
737		static void dump_log(void)
738		{
739	<	current_cpu->dump_log();
739	>	ppc_cpu->dump_log();
740		}
741
742		/*
743		* Initialize CPU emulation
744		*/
745
746	<	static sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
746	>	sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
747		{
748		#if ENABLE_VOSF
749		// Handle screen fault
#	Line 567 \| Line 755 \| static sigsegv_return_t sigsegv_handler(
755		const uintptr addr = (uintptr)fault_address;
756		#if HAVE_SIGSEGV_SKIP_INSTRUCTION
757		// Ignore writes to ROM
758	<	if ((addr - ROM_BASE) < ROM_SIZE)
758	>	if ((addr - (uintptr)ROMBaseHost) < ROM_SIZE)
759		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
760
761		// Get program counter of target CPU
762	<	sheepshaver_cpu * const cpu = current_cpu;
762	>	sheepshaver_cpu * const cpu = ppc_cpu;
763		const uint32 pc = cpu->pc();
764
765		// Fault in Mac ROM or RAM?
766	<	bool mac_fault = (pc >= ROM_BASE) && (pc < (ROM_BASE + ROM_AREA_SIZE)) \|\| (pc >= RAMBase) && (pc < (RAMBase + RAMSize));
766	>	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));
767		if (mac_fault) {
768
769		// "VM settings" during MacOS 8 installation
#	Line 595 \| Line 783 \| static sigsegv_return_t sigsegv_handler(
783		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
784		else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 \|\| cpu->gpr(20) == 0xf3012000))
785		return SIGSEGV_RETURN_SKIP_INSTRUCTION;
786	+
787	+	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
788	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(16) == 0xf3012002 \|\| cpu->gpr(16) == 0xf3012000))
789	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
790	+	else if ((pc - DR_CACHE_BASE) < DR_CACHE_SIZE && (cpu->gpr(20) == 0xf3012002 \|\| cpu->gpr(20) == 0xf3012000))
791	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
792	+
793	+	// Ignore writes to the zero page
794	+	else if ((uint32)(addr - SheepMem::ZeroPage()) < (uint32)SheepMem::PageSize())
795	+	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
796
797		// Ignore all other faults, if requested
798		if (PrefsFindBool("ignoresegv"))
#	Line 604 \| Line 802 \| static sigsegv_return_t sigsegv_handler(
802		#error "FIXME: You don't have the capability to skip instruction within signal handlers"
803		#endif
804
805	<	printf("SIGSEGV\n");
806	<	printf(" pc %p\n", fault_instruction);
807	<	printf(" ea %p\n", fault_address);
610	<	printf(" cpu %s\n", current_cpu == main_cpu ? "main" : "interrupts");
805	>	fprintf(stderr, "SIGSEGV\n");
806	>	fprintf(stderr, " pc %p\n", fault_instruction);
807	>	fprintf(stderr, " ea %p\n", fault_address);
808		dump_registers();
809	<	current_cpu->dump_log();
809	>	ppc_cpu->dump_log();
810		enter_mon();
811		QuitEmulator();
812
#	Line 618 \| Line 815 \| static sigsegv_return_t sigsegv_handler(
815
816		void init_emul_ppc(void)
817		{
818	+	// Get pointer to KernelData in host address space
819	+	kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE);
820	+
821		// Initialize main CPU emulator
822	<	main_cpu = new sheepshaver_cpu();
823	<	main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
822	>	ppc_cpu = new sheepshaver_cpu();
823	>	ppc_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
824	>	ppc_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
825		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
826
626	–	#if MULTICORE_CPU
627	–	// Initialize alternate CPU emulator to handle interrupts
628	–	interrupt_cpu = new sheepshaver_cpu();
629	–	#endif
630	–
631	–	// Install the handler for SIGSEGV
632	–	sigsegv_install_handler(sigsegv_handler);
633	–
827		#if ENABLE_MON
828		// Install "regs" command in cxmon
829		mon_add_command("regs", dump_registers, "regs Dump PowerPC registers\n");
#	Line 656 \| Line 849 \| void exit_emul_ppc(void)
849		printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
850		printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
851		(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
852	+	printf("Total ppc interrupt count: %d (%2.1f %%)\n", ppc_interrupt_count,
853	+	(double(ppc_interrupt_count) * 100.0) / double(interrupt_count));
854
855		#define PRINT_STATS(LABEL, VAR_PREFIX) do { \
856		printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count); \
#	Line 672 \| Line 867 \| void exit_emul_ppc(void)
867		printf("\n");
868		#endif
869
870	<	delete main_cpu;
871	<	#if MULTICORE_CPU
872	<	delete interrupt_cpu;
873	<	#endif
870	>	delete ppc_cpu;
871	>	}
872	>
873	>	#if PPC_ENABLE_JIT && PPC_REENTRANT_JIT
874	>	// Initialize EmulOp trampolines
875	>	void init_emul_op_trampolines(basic_dyngen & dg)
876	>	{
877	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
878	>	func_t func;
879	>
880	>	// EmulOp
881	>	emul_op_trampoline = dg.gen_start();
882	>	func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
883	>	dg.gen_invoke_CPU_T0(func);
884	>	dg.gen_exec_return();
885	>	dg.gen_end();
886	>
887	>	// NativeOp
888	>	native_op_trampoline = dg.gen_start();
889	>	func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_native_op).ptr();
890	>	dg.gen_invoke_CPU_T0(func);
891	>	dg.gen_exec_return();
892	>	dg.gen_end();
893	>
894	>	D(bug("EmulOp trampoline: %p\n", emul_op_trampoline));
895	>	D(bug("NativeOp trampoline: %p\n", native_op_trampoline));
896		}
897	+	#endif
898
899		/*
900		* Emulation loop
#	Line 684 \| Line 902 \| void exit_emul_ppc(void)
902
903		void emul_ppc(uint32 entry)
904		{
905	<	current_cpu = main_cpu;
906	<	#if DEBUG
689	<	current_cpu->start_log();
905	>	#if 0
906	>	ppc_cpu->start_log();
907		#endif
908		// start emulation loop and enable code translation or caching
909	<	current_cpu->execute(entry);
909	>	ppc_cpu->execute(entry);
910		}
911
912		/*
913		* Handle PowerPC interrupt
914		*/
915
699	–	#if ASYNC_IRQ
700	–	void HandleInterrupt(void)
701	–	{
702	–	main_cpu->handle_interrupt();
703	–	}
704	–	#else
916		void TriggerInterrupt(void)
917		{
918		#if 0
919		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
920		#else
921		// Trigger interrupt to main cpu only
922	<	if (main_cpu)
923	<	main_cpu->trigger_interrupt();
922	>	if (ppc_cpu)
923	>	ppc_cpu->trigger_interrupt();
924		#endif
925		}
715	–	#endif
926
927	<	void sheepshaver_cpu::handle_interrupt(void)
927	>	void HandleInterrupt(powerpc_registers *r)
928		{
929	+	#ifdef USE_SDL_VIDEO
930	+	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
931	+	SDL_PumpEvents();
932	+	#endif
933	+
934		// Do nothing if interrupts are disabled
935	<	if ((int32 )XLM_IRQ_NEST > 0)
935	>	if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
936		return;
937
938	<	// Do nothing if there is no interrupt pending
938	>	// Do nothing if there is no pending interrupt
939		if (InterruptFlags == 0)
940		return;
941
942	<	// Disable MacOS stack sniffer
943	<	WriteMacInt32(0x110, 0);
942	>	// Current interrupt nest level
943	>	static int interrupt_depth = 0;
944	>	++interrupt_depth;
945	>	#if EMUL_TIME_STATS
946	>	interrupt_count++;
947	>	#endif
948
949		// Interrupt action depends on current run mode
950		switch (ReadMacInt32(XLM_RUN_MODE)) {
951		case MODE_68K:
952		// 68k emulator active, trigger 68k interrupt level 1
734	–	assert(current_cpu == main_cpu);
953		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
954	<	set_cr(get_cr() \| tswap32(kernel_data->v[0x674 >> 2]));
954	>	r->cr.set(r->cr.get() \| tswap32(kernel_data->v[0x674 >> 2]));
955		break;
956
957		#if INTERRUPTS_IN_NATIVE_MODE
958		case MODE_NATIVE:
959		// 68k emulator inactive, in nanokernel?
960	<	assert(current_cpu == main_cpu);
961	<	if (gpr(1) != KernelDataAddr) {
960	>	if (r->gpr[1] != KernelDataAddr && interrupt_depth == 1) {
961	>
962		// Prepare for 68k interrupt level 1
963		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
964		WriteMacInt32(tswap32(kernel_data->v[0x658 >> 2]) + 0xdc,
#	Line 749 \| Line 967 \| void sheepshaver_cpu::handle_interrupt(v
967
968		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
969		DisableInterrupt();
752	–	cpu_push(interrupt_cpu);
970		if (ROMType == ROMTYPE_NEWWORLD)
971	<	current_cpu->interrupt(ROM_BASE + 0x312b1c);
971	>	ppc_cpu->interrupt(ROM_BASE + 0x312b1c);
972		else
973	<	current_cpu->interrupt(ROM_BASE + 0x312a3c);
757	<	cpu_pop();
973	>	ppc_cpu->interrupt(ROM_BASE + 0x312a3c);
974		}
975		break;
976		#endif
#	Line 763 \| Line 979 \| void sheepshaver_cpu::handle_interrupt(v
979		case MODE_EMUL_OP:
980		// 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
981		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
982	+	#if EMUL_TIME_STATS
983	+	const clock_t interrupt_start = clock();
984	+	#endif
985		#if 1
986		// Execute full 68k interrupt routine
987		M68kRegisters r;
988		uint32 old_r25 = ReadMacInt32(XLM_68K_R25); // Save interrupt level
989		WriteMacInt32(XLM_68K_R25, 0x21); // Execute with interrupt level 1
990	<	static const uint8 proc[] = {
990	>	static const uint8 proc_template[] = {
991		0x3f, 0x3c, 0x00, 0x00, // move.w #$0000,-(sp) (fake format word)
992		0x48, 0x7a, 0x00, 0x0a, // pea @1(pc) (return address)
993		0x40, 0xe7, // move sr,-(sp) (saved SR)
#	Line 776 \| Line 995 \| void sheepshaver_cpu::handle_interrupt(v
995		0x4e, 0xd0, // jmp (a0)
996		M68K_RTS >> 8, M68K_RTS & 0xff // @1
997		};
998	<	Execute68k((uint32)proc, &r);
998	>	BUILD_SHEEPSHAVER_PROCEDURE(proc);
999	>	Execute68k(proc, &r);
1000		WriteMacInt32(XLM_68K_R25, old_r25); // Restore interrupt level
1001		#else
1002		// Only update cursor
#	Line 784 \| Line 1004 \| void sheepshaver_cpu::handle_interrupt(v
1004		if (InterruptFlags & INTFLAG_VIA) {
1005		ClearInterruptFlag(INTFLAG_VIA);
1006		ADBInterrupt();
1007	<	ExecutePPC(VideoVBL);
1007	>	ExecuteNative(NATIVE_VIDEO_VBL);
1008		}
1009		}
1010		#endif
1011	+	#if EMUL_TIME_STATS
1012	+	interrupt_time += (clock() - interrupt_start);
1013	+	#endif
1014		}
1015		break;
1016		#endif
1017		}
1018	+
1019	+	// We are done with this interrupt
1020	+	--interrupt_depth;
1021		}
1022
1023		static void get_resource(void);
#	Line 800 \| Line 1026 \| static void get_ind_resource(void);
1026		static void get_1_ind_resource(void);
1027		static void r_get_resource(void);
1028
1029	<	#define GPR(REG) current_cpu->gpr(REG)
1030	<
805	<	static void NativeOp(int selector)
1029	>	// Execute NATIVE_OP routine
1030	>	void sheepshaver_cpu::execute_native_op(uint32 selector)
1031		{
1032		#if EMUL_TIME_STATS
1033		native_exec_count++;
#	Line 820 \| Line 1045 \| static void NativeOp(int selector)
1045		VideoVBL();
1046		break;
1047		case NATIVE_VIDEO_DO_DRIVER_IO:
1048	<	GPR(3) = (int32)(int16)VideoDoDriverIO((void )GPR(3), (void )GPR(4),
824	<	(void *)GPR(5), GPR(6), GPR(7));
1048	>	gpr(3) = (int32)(int16)VideoDoDriverIO(gpr(3), gpr(4), gpr(5), gpr(6), gpr(7));
1049		break;
826	–	#ifdef WORDS_BIGENDIAN
1050		case NATIVE_ETHER_IRQ:
1051		EtherIRQ();
1052		break;
1053		case NATIVE_ETHER_INIT:
1054	<	GPR(3) = InitStreamModule((void *)GPR(3));
1054	>	gpr(3) = InitStreamModule((void *)gpr(3));
1055		break;
1056		case NATIVE_ETHER_TERM:
1057		TerminateStreamModule();
1058		break;
1059		case NATIVE_ETHER_OPEN:
1060	<	GPR(3) = ether_open((queue_t )GPR(3), (void )GPR(4), GPR(5), GPR(6), (void*)GPR(7));
1060	>	gpr(3) = ether_open((queue_t )gpr(3), (void )gpr(4), gpr(5), gpr(6), (void*)gpr(7));
1061		break;
1062		case NATIVE_ETHER_CLOSE:
1063	<	GPR(3) = ether_close((queue_t )GPR(3), GPR(4), (void )GPR(5));
1063	>	gpr(3) = ether_close((queue_t )gpr(3), gpr(4), (void )gpr(5));
1064		break;
1065		case NATIVE_ETHER_WPUT:
1066	<	GPR(3) = ether_wput((queue_t )GPR(3), (mblk_t )GPR(4));
1066	>	gpr(3) = ether_wput((queue_t )gpr(3), (mblk_t )gpr(4));
1067		break;
1068		case NATIVE_ETHER_RSRV:
1069	<	GPR(3) = ether_rsrv((queue_t *)GPR(3));
1069	>	gpr(3) = ether_rsrv((queue_t *)gpr(3));
1070		break;
1071	<	#else
1072	<	case NATIVE_ETHER_INIT:
1073	<	// FIXME: needs more complicated thunks
1074	<	GPR(3) = false;
1071	>	case NATIVE_SYNC_HOOK:
1072	>	gpr(3) = NQD_sync_hook(gpr(3));
1073	>	break;
1074	>	case NATIVE_BITBLT_HOOK:
1075	>	gpr(3) = NQD_bitblt_hook(gpr(3));
1076	>	break;
1077	>	case NATIVE_BITBLT:
1078	>	NQD_bitblt(gpr(3));
1079	>	break;
1080	>	case NATIVE_FILLRECT_HOOK:
1081	>	gpr(3) = NQD_fillrect_hook(gpr(3));
1082	>	break;
1083	>	case NATIVE_INVRECT:
1084	>	NQD_invrect(gpr(3));
1085	>	break;
1086	>	case NATIVE_FILLRECT:
1087	>	NQD_fillrect(gpr(3));
1088		break;
853	–	#endif
1089		case NATIVE_SERIAL_NOTHING:
1090		case NATIVE_SERIAL_OPEN:
1091		case NATIVE_SERIAL_PRIME_IN:
#	Line 868 \| Line 1103 \| static void NativeOp(int selector)
1103		SerialStatus,
1104		SerialClose
1105		};
1106	<	GPR(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](GPR(3), GPR(4));
1106	>	gpr(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](gpr(3), gpr(4));
1107		break;
1108		}
1109		case NATIVE_GET_RESOURCE:
#	Line 878 \| Line 1113 \| static void NativeOp(int selector)
1113		case NATIVE_R_GET_RESOURCE: {
1114		typedef void (*GetResourceCallback)(void);
1115		static const GetResourceCallback get_resource_callbacks[] = {
1116	<	get_resource,
1117	<	get_1_resource,
1118	<	get_ind_resource,
1119	<	get_1_ind_resource,
1120	<	r_get_resource
1116	>	::get_resource,
1117	>	::get_1_resource,
1118	>	::get_ind_resource,
1119	>	::get_1_ind_resource,
1120	>	::r_get_resource
1121		};
1122		get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1123		break;
1124		}
890	–	case NATIVE_DISABLE_INTERRUPT:
891	–	DisableInterrupt();
892	–	break;
893	–	case NATIVE_ENABLE_INTERRUPT:
894	–	EnableInterrupt();
895	–	break;
1125		case NATIVE_MAKE_EXECUTABLE:
1126	<	MakeExecutable(0, (void *)GPR(4), GPR(5));
1126	>	MakeExecutable(0, gpr(4), gpr(5));
1127	>	break;
1128	>	case NATIVE_CHECK_LOAD_INVOC:
1129	>	check_load_invoc(gpr(3), gpr(4), gpr(5));
1130		break;
1131		default:
1132		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
#	Line 908 \| Line 1140 \| static void NativeOp(int selector)
1140		}
1141
1142		/*
911	–	* Execute native subroutine (LR must contain return address)
912	–	*/
913	–
914	–	void ExecuteNative(int selector)
915	–	{
916	–	SheepRoutineDescriptor desc(0, NativeTVECT(selector));
917	–	M68kRegisters r;
918	–	Execute68k(desc.addr(), &r);
919	–	}
920	–
921	–	/*
1143		* Execute 68k subroutine (must be ended with EXEC_RETURN)
1144		* This must only be called by the emul_thread when in EMUL_OP mode
1145		* r->a[7] is unused, the routine runs on the caller's stack
#	Line 926 \| Line 1147 \| void ExecuteNative(int selector)
1147
1148		void Execute68k(uint32 pc, M68kRegisters *r)
1149		{
1150	<	current_cpu->execute_68k(pc, r);
1150	>	ppc_cpu->execute_68k(pc, r);
1151		}
1152
1153		/*
#	Line 949 \| Line 1170 \| void Execute68kTrap(uint16 trap, M68kReg
1170
1171		uint32 call_macos(uint32 tvect)
1172		{
1173	<	return current_cpu->execute_macos_code(tvect, 0, NULL);
1173	>	return ppc_cpu->execute_macos_code(tvect, 0, NULL);
1174		}
1175
1176		uint32 call_macos1(uint32 tvect, uint32 arg1)
1177		{
1178		const uint32 args[] = { arg1 };
1179	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1179	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1180		}
1181
1182		uint32 call_macos2(uint32 tvect, uint32 arg1, uint32 arg2)
1183		{
1184		const uint32 args[] = { arg1, arg2 };
1185	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1185	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1186		}
1187
1188		uint32 call_macos3(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3)
1189		{
1190		const uint32 args[] = { arg1, arg2, arg3 };
1191	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1191	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1192		}
1193
1194		uint32 call_macos4(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4)
1195		{
1196		const uint32 args[] = { arg1, arg2, arg3, arg4 };
1197	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1197	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1198		}
1199
1200		uint32 call_macos5(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5)
1201		{
1202		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5 };
1203	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1203	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1204		}
1205
1206		uint32 call_macos6(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6)
1207		{
1208		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6 };
1209	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1209	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1210		}
1211
1212		uint32 call_macos7(uint32 tvect, uint32 arg1, uint32 arg2, uint32 arg3, uint32 arg4, uint32 arg5, uint32 arg6, uint32 arg7)
1213		{
1214		const uint32 args[] = { arg1, arg2, arg3, arg4, arg5, arg6, arg7 };
1215	<	return current_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1215	>	return ppc_cpu->execute_macos_code(tvect, sizeof(args)/sizeof(args[0]), args);
1216		}
1217
1218		/*
#	Line 1000 \| Line 1221 \| uint32 call_macos7(uint32 tvect, uint32
1221
1222		void get_resource(void)
1223		{
1224	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1224	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));
1225		}
1226
1227		void get_1_resource(void)
1228		{
1229	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1229	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_RESOURCE));
1230		}
1231
1232		void get_ind_resource(void)
1233		{
1234	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1234	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_IND_RESOURCE));
1235		}
1236
1237		void get_1_ind_resource(void)
1238		{
1239	<	current_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1239	>	ppc_cpu->get_resource(ReadMacInt32(XLM_GET_1_IND_RESOURCE));
1240		}
1241
1242		void r_get_resource(void)
1243		{
1244	<	current_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1244	>	ppc_cpu->get_resource(ReadMacInt32(XLM_R_GET_RESOURCE));
1245		}

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Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents): Revision 1.21 by gbeauche, 2003-12-04T17:26:38Z vs. Revision 1.62 by gbeauche, 2005-06-30T07:34:17Z

Diff Legend

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.21 by gbeauche, 2003-12-04T17:26:38Z vs.
Revision 1.62 by gbeauche, 2005-06-30T07:34:17Z