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

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.22 by gbeauche, 2003-12-04T23:37:38Z vs.
Revision 1.27 by gbeauche, 2004-02-15T17:17:36Z

#	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 167 \| Line 181 \| sheepshaver_cpu::sheepshaver_cpu()
181
182		void sheepshaver_cpu::init_decoder()
183		{
170	–	#ifndef PPC_NO_STATIC_II_INDEX_TABLE
171	–	static bool initialized = false;
172	–	if (initialized)
173	–	return;
174	–	initialized = true;
175	–	#endif
176	–
184		static const instr_info_t sheep_ii_table[] = {
185		{ "sheep",
186		(execute_pmf)&sheepshaver_cpu::execute_sheep,
#	Line 206 \| Line 213 \| typedef bit_field< 20, 20 > FN_field;
213		typedef bit_field< 21, 25 > NATIVE_OP_field;
214		typedef bit_field< 26, 31 > EMUL_OP_field;
215
216	+	// Execute EMUL_OP routine
217	+	void sheepshaver_cpu::execute_emul_op(uint32 emul_op)
218	+	{
219	+	M68kRegisters r68;
220	+	WriteMacInt32(XLM_68K_R25, gpr(25));
221	+	WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
222	+	for (int i = 0; i < 8; i++)
223	+	r68.d[i] = gpr(8 + i);
224	+	for (int i = 0; i < 7; i++)
225	+	r68.a[i] = gpr(16 + i);
226	+	r68.a[7] = gpr(1);
227	+	uint32 saved_cr = get_cr() & CR_field<2>::mask();
228	+	uint32 saved_xer = get_xer();
229	+	EmulOp(&r68, gpr(24), emul_op);
230	+	set_cr(saved_cr);
231	+	set_xer(saved_xer);
232	+	for (int i = 0; i < 8; i++)
233	+	gpr(8 + i) = r68.d[i];
234	+	for (int i = 0; i < 7; i++)
235	+	gpr(16 + i) = r68.a[i];
236	+	gpr(1) = r68.a[7];
237	+	WriteMacInt32(XLM_RUN_MODE, MODE_68K);
238	+	}
239	+
240		// Execute SheepShaver instruction
241		void sheepshaver_cpu::execute_sheep(uint32 opcode)
242		{
#	Line 229 \| Line 260 \| void sheepshaver_cpu::execute_sheep(uint
260		pc() += 4;
261		break;
262
263	<	default: { // EMUL_OP
264	<	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);
263	>	default: // EMUL_OP
264	>	execute_emul_op(EMUL_OP_field::extract(opcode) - 3);
265		pc() += 4;
266		break;
267		}
268	+	}
269	+
270	+	// Compile one instruction
271	+	bool sheepshaver_cpu::compile1(codegen_context_t & cg_context)
272	+	{
273	+	#if PPC_ENABLE_JIT
274	+	const instr_info_t *ii = cg_context.instr_info;
275	+	if (ii->mnemo != PPC_I(SHEEP))
276	+	return false;
277	+
278	+	bool compiled = false;
279	+	powerpc_dyngen & dg = cg_context.codegen;
280	+	uint32 opcode = cg_context.opcode;
281	+
282	+	switch (opcode & 0x3f) {
283	+	case 0: // EMUL_RETURN
284	+	dg.gen_invoke(QuitEmulator);
285	+	compiled = true;
286	+	break;
287	+
288	+	case 1: // EXEC_RETURN
289	+	dg.gen_spcflags_set(SPCFLAG_CPU_EXEC_RETURN);
290	+	compiled = true;
291	+	break;
292	+
293	+	case 2: { // EXEC_NATIVE
294	+	uint32 selector = NATIVE_OP_field::extract(opcode);
295	+	switch (selector) {
296	+	case NATIVE_PATCH_NAME_REGISTRY:
297	+	dg.gen_invoke(DoPatchNameRegistry);
298	+	compiled = true;
299	+	break;
300	+	case NATIVE_VIDEO_INSTALL_ACCEL:
301	+	dg.gen_invoke(VideoInstallAccel);
302	+	compiled = true;
303	+	break;
304	+	case NATIVE_VIDEO_VBL:
305	+	dg.gen_invoke(VideoVBL);
306	+	compiled = true;
307	+	break;
308	+	case NATIVE_GET_RESOURCE:
309	+	case NATIVE_GET_1_RESOURCE:
310	+	case NATIVE_GET_IND_RESOURCE:
311	+	case NATIVE_GET_1_IND_RESOURCE:
312	+	case NATIVE_R_GET_RESOURCE: {
313	+	static const uint32 get_resource_ptr[] = {
314	+	XLM_GET_RESOURCE,
315	+	XLM_GET_1_RESOURCE,
316	+	XLM_GET_IND_RESOURCE,
317	+	XLM_GET_1_IND_RESOURCE,
318	+	XLM_R_GET_RESOURCE
319	+	};
320	+	uint32 old_get_resource = ReadMacInt32(get_resource_ptr[selector - NATIVE_GET_RESOURCE]);
321	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
322	+	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::get_resource).ptr();
323	+	dg.gen_invoke_CPU_im(func, old_get_resource);
324	+	compiled = true;
325	+	break;
326	+	}
327	+	case NATIVE_DISABLE_INTERRUPT:
328	+	dg.gen_invoke(DisableInterrupt);
329	+	compiled = true;
330	+	break;
331	+	case NATIVE_ENABLE_INTERRUPT:
332	+	dg.gen_invoke(EnableInterrupt);
333	+	compiled = true;
334	+	break;
335	+	case NATIVE_CHECK_LOAD_INVOC:
336	+	dg.gen_load_T0_GPR(3);
337	+	dg.gen_load_T1_GPR(4);
338	+	dg.gen_se_16_32_T1();
339	+	dg.gen_load_T2_GPR(5);
340	+	dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc);
341	+	compiled = true;
342	+	break;
343	+	}
344	+	if (FN_field::test(opcode)) {
345	+	if (compiled) {
346	+	dg.gen_load_A0_LR();
347	+	dg.gen_set_PC_A0();
348	+	}
349	+	cg_context.done_compile = true;
350	+	}
351	+	else
352	+	cg_context.done_compile = false;
353	+	break;
354	+	}
355	+
356	+	default: { // EMUL_OP
357	+	typedef void (*func_t)(dyngen_cpu_base, uint32);
358	+	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
359	+	dg.gen_invoke_CPU_im(func, EMUL_OP_field::extract(opcode) - 3);
360	+	cg_context.done_compile = false;
361	+	compiled = true;
362	+	break;
363	+	}
364		}
365	+	return compiled;
366	+	#endif
367	+	return false;
368		}
369
370		// Handle MacOS interrupt
#	Line 268 \| Line 384 \| void sheepshaver_cpu::interrupt(uint32 e
384		#endif
385
386		// Initialize stack pointer to SheepShaver alternate stack base
387	<	SheepArray<64> stack_area;
272	<	gpr(1) = stack_area.addr();
387	>	gpr(1) = SignalStackBase() - 64;
388
389		// Build trampoline to return from interrupt
390		SheepVar32 trampoline = POWERPC_EXEC_RETURN;
#	Line 485 \| Line 600 \| inline void sheepshaver_cpu::execute_ppc
600		}
601
602		// Resource Manager thunk
488	–	extern "C" void check_load_invoc(uint32 type, int16 id, uint32 h);
489	–
603		inline void sheepshaver_cpu::get_resource(uint32 old_get_resource)
604		{
605		uint32 type = gpr(3);
#	Line 621 \| Line 734 \| void init_emul_ppc(void)
734		// Initialize main CPU emulator
735		main_cpu = new sheepshaver_cpu();
736		main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
737	+	main_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
738		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
739
740		#if MULTICORE_CPU
#	Line 685 \| Line 799 \| void exit_emul_ppc(void)
799		void emul_ppc(uint32 entry)
800		{
801		current_cpu = main_cpu;
802	<	#if DEBUG
802	>	#if 0
803		current_cpu->start_log();
804		#endif
805		// start emulation loop and enable code translation or caching
#	Line 896 \| Line 1010 \| static void NativeOp(int selector)
1010		case NATIVE_MAKE_EXECUTABLE:
1011		MakeExecutable(0, (void *)GPR(4), GPR(5));
1012		break;
1013	+	case NATIVE_CHECK_LOAD_INVOC:
1014	+	check_load_invoc(GPR(3), GPR(4), GPR(5));
1015	+	break;
1016		default:
1017		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
1018		QuitEmulator();

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Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents): Revision 1.22 by gbeauche, 2003-12-04T23:37:38Z vs. Revision 1.27 by gbeauche, 2004-02-15T17:17:36Z

Diff Legend

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.22 by gbeauche, 2003-12-04T23:37:38Z vs.
Revision 1.27 by gbeauche, 2004-02-15T17:17:36Z