[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 1.28 by gbeauche, 2004-02-16T15:34:55Z

#	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 73 \| Line 73 \| static void enter_mon(void)
73		#endif
74		}
75
76	+	// From main_*.cpp
77	+	extern uintptr SignalStackBase();
78	+
79	+	// From rsrc_patches.cpp
80	+	extern "C" void check_load_invoc(uint32 type, int16 id, uint32 h);
81	+
82		// PowerPC EmulOp to exit from emulation looop
83		const uint32 POWERPC_EXEC_RETURN = POWERPC_EMUL_OP \| 1;
84
#	Line 124 \| Line 130 \| public:
130		// Constructor
131		sheepshaver_cpu();
132
133	<	// Condition Register accessors
133	>	// CR & XER accessors
134		uint32 get_cr() const { return cr().get(); }
135		void set_cr(uint32 v) { cr().set(v); }
136	+	uint32 get_xer() const { return xer().get(); }
137	+	void set_xer(uint32 v) { xer().set(v); }
138	+
139	+	// Execute EMUL_OP routine
140	+	void execute_emul_op(uint32 emul_op);
141
142		// Execute 68k routine
143		void execute_68k(uint32 entry, M68kRegisters *r);
#	Line 137 \| Line 148 \| public:
148		// Execute MacOS/PPC code
149		uint32 execute_macos_code(uint32 tvect, int nargs, uint32 const *args);
150
151	+	// Compile one instruction
152	+	virtual bool compile1(codegen_context_t & cg_context);
153	+
154		// Resource manager thunk
155		void get_resource(uint32 old_get_resource);
156
#	Line 157 \| Line 171 \| public:
171		friend sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
172		};
173
174	<	lazy_allocator< sheepshaver_cpu > allocator_helper< sheepshaver_cpu, lazy_allocator >::allocator;
174	>	// FIXME: this specialization doesn't work with GCC
175	>	// template<> lazy_allocator< sheepshaver_cpu > allocator_helper< sheepshaver_cpu, lazy_allocator >::allocator;
176	>	template< class data_type, template< class > class allocator_type >
177	>	allocator_type< data_type > allocator_helper< data_type, allocator_type >::allocator;
178
179		sheepshaver_cpu::sheepshaver_cpu()
180		: powerpc_cpu(enable_jit_p())
#	Line 167 \| Line 184 \| sheepshaver_cpu::sheepshaver_cpu()
184
185		void sheepshaver_cpu::init_decoder()
186		{
170	–	#ifndef PPC_NO_STATIC_II_INDEX_TABLE
171	–	static bool initialized = false;
172	–	if (initialized)
173	–	return;
174	–	initialized = true;
175	–	#endif
176	–
187		static const instr_info_t sheep_ii_table[] = {
188		{ "sheep",
189		(execute_pmf)&sheepshaver_cpu::execute_sheep,
#	Line 206 \| Line 216 \| typedef bit_field< 20, 20 > FN_field;
216		typedef bit_field< 21, 25 > NATIVE_OP_field;
217		typedef bit_field< 26, 31 > EMUL_OP_field;
218
219	+	// Execute EMUL_OP routine
220	+	void sheepshaver_cpu::execute_emul_op(uint32 emul_op)
221	+	{
222	+	M68kRegisters r68;
223	+	WriteMacInt32(XLM_68K_R25, gpr(25));
224	+	WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
225	+	for (int i = 0; i < 8; i++)
226	+	r68.d[i] = gpr(8 + i);
227	+	for (int i = 0; i < 7; i++)
228	+	r68.a[i] = gpr(16 + i);
229	+	r68.a[7] = gpr(1);
230	+	uint32 saved_cr = get_cr() & CR_field<2>::mask();
231	+	uint32 saved_xer = get_xer();
232	+	EmulOp(&r68, gpr(24), emul_op);
233	+	set_cr(saved_cr);
234	+	set_xer(saved_xer);
235	+	for (int i = 0; i < 8; i++)
236	+	gpr(8 + i) = r68.d[i];
237	+	for (int i = 0; i < 7; i++)
238	+	gpr(16 + i) = r68.a[i];
239	+	gpr(1) = r68.a[7];
240	+	WriteMacInt32(XLM_RUN_MODE, MODE_68K);
241	+	}
242	+
243		// Execute SheepShaver instruction
244		void sheepshaver_cpu::execute_sheep(uint32 opcode)
245		{
#	Line 229 \| Line 263 \| void sheepshaver_cpu::execute_sheep(uint
263		pc() += 4;
264		break;
265
266	<	default: { // EMUL_OP
267	<	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);
266	>	default: // EMUL_OP
267	>	execute_emul_op(EMUL_OP_field::extract(opcode) - 3);
268		pc() += 4;
269		break;
270		}
271	+	}
272	+
273	+	// Compile one instruction
274	+	bool sheepshaver_cpu::compile1(codegen_context_t & cg_context)
275	+	{
276	+	#if PPC_ENABLE_JIT
277	+	const instr_info_t *ii = cg_context.instr_info;
278	+	if (ii->mnemo != PPC_I(SHEEP))
279	+	return false;
280	+
281	+	bool compiled = false;
282	+	powerpc_dyngen & dg = cg_context.codegen;
283	+	uint32 opcode = cg_context.opcode;
284	+
285	+	switch (opcode & 0x3f) {
286	+	case 0: // EMUL_RETURN
287	+	dg.gen_invoke(QuitEmulator);
288	+	compiled = true;
289	+	break;
290	+
291	+	case 1: // EXEC_RETURN
292	+	dg.gen_spcflags_set(SPCFLAG_CPU_EXEC_RETURN);
293	+	compiled = true;
294	+	break;
295	+
296	+	case 2: { // EXEC_NATIVE
297	+	uint32 selector = NATIVE_OP_field::extract(opcode);
298	+	switch (selector) {
299	+	case NATIVE_PATCH_NAME_REGISTRY:
300	+	dg.gen_invoke(DoPatchNameRegistry);
301	+	compiled = true;
302	+	break;
303	+	case NATIVE_VIDEO_INSTALL_ACCEL:
304	+	dg.gen_invoke(VideoInstallAccel);
305	+	compiled = true;
306	+	break;
307	+	case NATIVE_VIDEO_VBL:
308	+	dg.gen_invoke(VideoVBL);
309	+	compiled = true;
310	+	break;
311	+	case NATIVE_GET_RESOURCE:
312	+	case NATIVE_GET_1_RESOURCE:
313	+	case NATIVE_GET_IND_RESOURCE:
314	+	case NATIVE_GET_1_IND_RESOURCE:
315	+	case NATIVE_R_GET_RESOURCE: {
316	+	static const uint32 get_resource_ptr[] = {
317	+	XLM_GET_RESOURCE,
318	+	XLM_GET_1_RESOURCE,
319	+	XLM_GET_IND_RESOURCE,
320	+	XLM_GET_1_IND_RESOURCE,
321	+	XLM_R_GET_RESOURCE
322	+	};
323	+	uint32 old_get_resource = ReadMacInt32(get_resource_ptr[selector - NATIVE_GET_RESOURCE]);
324	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
325	+	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::get_resource).ptr();
326	+	dg.gen_invoke_CPU_im(func, old_get_resource);
327	+	compiled = true;
328	+	break;
329	+	}
330	+	case NATIVE_DISABLE_INTERRUPT:
331	+	dg.gen_invoke(DisableInterrupt);
332	+	compiled = true;
333	+	break;
334	+	case NATIVE_ENABLE_INTERRUPT:
335	+	dg.gen_invoke(EnableInterrupt);
336	+	compiled = true;
337	+	break;
338	+	case NATIVE_CHECK_LOAD_INVOC:
339	+	dg.gen_load_T0_GPR(3);
340	+	dg.gen_load_T1_GPR(4);
341	+	dg.gen_se_16_32_T1();
342	+	dg.gen_load_T2_GPR(5);
343	+	dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc);
344	+	compiled = true;
345	+	break;
346	+	}
347	+	if (FN_field::test(opcode)) {
348	+	if (compiled) {
349	+	dg.gen_load_A0_LR();
350	+	dg.gen_set_PC_A0();
351	+	}
352	+	cg_context.done_compile = true;
353	+	}
354	+	else
355	+	cg_context.done_compile = false;
356	+	break;
357	+	}
358	+
359	+	default: { // EMUL_OP
360	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
361	+	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
362	+	dg.gen_invoke_CPU_im(func, EMUL_OP_field::extract(opcode) - 3);
363	+	cg_context.done_compile = false;
364	+	compiled = true;
365	+	break;
366		}
367	+	}
368	+	return compiled;
369	+	#endif
370	+	return false;
371		}
372
373		// Handle MacOS interrupt
#	Line 268 \| Line 387 \| void sheepshaver_cpu::interrupt(uint32 e
387		#endif
388
389		// Initialize stack pointer to SheepShaver alternate stack base
390	<	SheepArray<64> stack_area;
272	<	gpr(1) = stack_area.addr();
390	>	gpr(1) = SignalStackBase() - 64;
391
392		// Build trampoline to return from interrupt
393		SheepVar32 trampoline = POWERPC_EXEC_RETURN;
#	Line 485 \| Line 603 \| inline void sheepshaver_cpu::execute_ppc
603		}
604
605		// Resource Manager thunk
488	–	extern "C" void check_load_invoc(uint32 type, int16 id, uint32 h);
489	–
606		inline void sheepshaver_cpu::get_resource(uint32 old_get_resource)
607		{
608		uint32 type = gpr(3);
#	Line 621 \| Line 737 \| void init_emul_ppc(void)
737		// Initialize main CPU emulator
738		main_cpu = new sheepshaver_cpu();
739		main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
740	+	main_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
741		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
742
743		#if MULTICORE_CPU
#	Line 685 \| Line 802 \| void exit_emul_ppc(void)
802		void emul_ppc(uint32 entry)
803		{
804		current_cpu = main_cpu;
805	<	#if DEBUG
805	>	#if 0
806		current_cpu->start_log();
807		#endif
808		// start emulation loop and enable code translation or caching
#	Line 784 \| Line 901 \| void sheepshaver_cpu::handle_interrupt(v
901		if (InterruptFlags & INTFLAG_VIA) {
902		ClearInterruptFlag(INTFLAG_VIA);
903		ADBInterrupt();
904	<	ExecutePPC(VideoVBL);
904	>	ExecuteNative(NATIVE_VIDEO_VBL);
905		}
906		}
907		#endif
#	Line 896 \| Line 1013 \| static void NativeOp(int selector)
1013		case NATIVE_MAKE_EXECUTABLE:
1014		MakeExecutable(0, (void *)GPR(4), GPR(5));
1015		break;
1016	+	case NATIVE_CHECK_LOAD_INVOC:
1017	+	check_load_invoc(GPR(3), GPR(4), GPR(5));
1018	+	break;
1019		default:
1020		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
1021		QuitEmulator();
#	Line 908 \| Line 1028 \| static void NativeOp(int selector)
1028		}
1029
1030		/*
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	–	/*
1031		* Execute 68k subroutine (must be ended with EXEC_RETURN)
1032		* This must only be called by the emul_thread when in EMUL_OP mode
1033		* r->a[7] is unused, the routine runs on the caller's stack

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents): Revision 1.21 by gbeauche, 2003-12-04T17:26:38Z vs. Revision 1.28 by gbeauche, 2004-02-16T15:34:55Z

Diff Legend

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.21 by gbeauche, 2003-12-04T17:26:38Z vs.
Revision 1.28 by gbeauche, 2004-02-16T15:34:55Z