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

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.1 by gbeauche, 2003-09-07T14:25:01Z vs.
Revision 1.29 by gbeauche, 2004-02-20T17:20:15Z

#	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"
#	Line 29 \| Line 30
30		#include "sigsegv.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
42		#include <stdio.h>
43
#	Line 42 \| Line 46
46		#include "mon_disass.h"
47		#endif
48
49	<	#define DEBUG 1
49	>	#define DEBUG 0
50		#include "debug.h"
51
52	+	// Emulation time statistics
53	+	#define EMUL_TIME_STATS 1
54	+
55	+	#if EMUL_TIME_STATS
56	+	static clock_t emul_start_time;
57	+	static uint32 interrupt_count = 0;
58	+	static clock_t interrupt_time = 0;
59	+	static uint32 exec68k_count = 0;
60	+	static clock_t exec68k_time = 0;
61	+	static uint32 native_exec_count = 0;
62	+	static clock_t native_exec_time = 0;
63	+	static uint32 macos_exec_count = 0;
64	+	static clock_t macos_exec_time = 0;
65	+	#endif
66	+
67		static void enter_mon(void)
68		{
69		// Start up mon in real-mode
#	Line 54 \| 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	+
85	+	// Enable multicore (main/interrupts) cpu emulation?
86	+	#define MULTICORE_CPU (ASYNC_IRQ ? 1 : 0)
87	+
88		// Enable Execute68k() safety checks?
89		#define SAFE_EXEC_68K 1
90
#	Line 66 \| Line 97 \| static void enter_mon(void)
97		// Interrupts in native mode?
98		#define INTERRUPTS_IN_NATIVE_MODE 1
99
100	<	// 68k Emulator Data
101	<	struct EmulatorData {
71	<	uint32 v[0x400];
72	<	};
100	>	// Pointer to Kernel Data
101	>	static KernelData * const kernel_data = (KernelData *)KERNEL_DATA_BASE;
102
103	<	// Kernel Data
104	<	struct KernelData {
76	<	uint32 v[0x400];
77	<	EmulatorData ed;
78	<	};
103	>	// SIGSEGV handler
104	>	static sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
105
106	<	// Pointer to Kernel Data
107	<	static KernelData * const kernel_data = (KernelData *)0x68ffe000;
106	>	// JIT Compiler enabled?
107	>	static inline bool enable_jit_p()
108	>	{
109	>	return PrefsFindBool("jit");
110	>	}
111
112
113		/**
114		* PowerPC emulator glue with special 'sheep' opcodes
115		**/
116
117	<	struct sheepshaver_exec_return { };
117	>	enum {
118	>	PPC_I(SHEEP) = PPC_I(MAX),
119	>	PPC_I(SHEEP_MAX)
120	>	};
121
122		class sheepshaver_cpu
123		: public powerpc_cpu
#	Line 95 \| Line 127 \| class sheepshaver_cpu
127
128		public:
129
130	<	sheepshaver_cpu()
131	<	: powerpc_cpu()
100	<	{ init_decoder(); }
101	<
102	<	// Stack pointer accessors
103	<	uint32 get_sp() const { return gpr(1); }
104	<	void set_sp(uint32 v) { gpr(1) = v; }
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	<	// Execution loop
140	<	void execute(uint32 pc);
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);
144
145	+	// Execute ppc routine
146	+	void execute_ppc(uint32 entry);
147	+
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
157		// Handle MacOS interrupt
158	<	void interrupt(uint32 entry, uint32 sp);
158	>	void interrupt(uint32 entry);
159	>	void handle_interrupt();
160
161	<	// Lazy memory allocator (one item at a time)
162	<	void *operator new(size_t size)
127	<	{ return allocator_helper< sheepshaver_cpu, lazy_allocator >::allocate(); }
128	<	void operator delete(void *p)
129	<	{ allocator_helper< sheepshaver_cpu, lazy_allocator >::deallocate(p); }
130	<	// FIXME: really make surre array allocation fail at link time?
131	<	void *operator new[](size_t);
132	<	void operator delete[](void *p);
161	>	// Make sure the SIGSEGV handler can access CPU registers
162	>	friend sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
163		};
164
165	<	lazy_allocator< sheepshaver_cpu > allocator_helper< sheepshaver_cpu, lazy_allocator >::allocator;
165	>	// Memory allocator returning areas aligned on 16-byte boundaries
166	>	void *operator new(size_t size)
167	>	{
168	>	void *p;
169
170	<	void sheepshaver_cpu::init_decoder()
170	>	/* XXX: try different approaches */
171	>	if (posix_memalign(&p, 16, size) != 0)
172	>	throw std::bad_alloc();
173	>
174	>	return p;
175	>	}
176	>
177	>	void operator delete(void *p)
178		{
179	<	#ifndef PPC_NO_STATIC_II_INDEX_TABLE
180	<	static bool initialized = false;
141	<	if (initialized)
142	<	return;
143	<	initialized = true;
144	<	#endif
179	>	free(p);
180	>	}
181
182	+	sheepshaver_cpu::sheepshaver_cpu()
183	+	: powerpc_cpu(enable_jit_p())
184	+	{
185	+	init_decoder();
186	+	}
187	+
188	+	void sheepshaver_cpu::init_decoder()
189	+	{
190		static const instr_info_t sheep_ii_table[] = {
191		{ "sheep",
192	<	(execute_fn)&sheepshaver_cpu::execute_sheep,
192	>	(execute_pmf)&sheepshaver_cpu::execute_sheep,
193		NULL,
194	<	D_form, 6, 0, CFLOW_TRAP
194	>	PPC_I(SHEEP),
195	>	D_form, 6, 0, CFLOW_JUMP \| CFLOW_TRAP
196		}
197		};
198
#	Line 163 \| Line 208 \| void sheepshaver_cpu::init_decoder()
208		// Forward declaration for native opcode handler
209		static void NativeOp(int selector);
210
211	+	/* NativeOp instruction format:
212	+	+------------+--------------------------+--+----------+------------+
213	+	\| 6 \| \|FN\| OP \| 2 \|
214	+	+------------+--------------------------+--+----------+------------+
215	+	0 5 \|6 19 20 21 25 26 31
216	+	*/
217	+
218	+	typedef bit_field< 20, 20 > FN_field;
219	+	typedef bit_field< 21, 25 > NATIVE_OP_field;
220	+	typedef bit_field< 26, 31 > EMUL_OP_field;
221	+
222	+	// Execute EMUL_OP routine
223	+	void sheepshaver_cpu::execute_emul_op(uint32 emul_op)
224	+	{
225	+	M68kRegisters r68;
226	+	WriteMacInt32(XLM_68K_R25, gpr(25));
227	+	WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
228	+	for (int i = 0; i < 8; i++)
229	+	r68.d[i] = gpr(8 + i);
230	+	for (int i = 0; i < 7; i++)
231	+	r68.a[i] = gpr(16 + i);
232	+	r68.a[7] = gpr(1);
233	+	uint32 saved_cr = get_cr() & CR_field<2>::mask();
234	+	uint32 saved_xer = get_xer();
235	+	EmulOp(&r68, gpr(24), emul_op);
236	+	set_cr(saved_cr);
237	+	set_xer(saved_xer);
238	+	for (int i = 0; i < 8; i++)
239	+	gpr(8 + i) = r68.d[i];
240	+	for (int i = 0; i < 7; i++)
241	+	gpr(16 + i) = r68.a[i];
242	+	gpr(1) = r68.a[7];
243	+	WriteMacInt32(XLM_RUN_MODE, MODE_68K);
244	+	}
245	+
246		// Execute SheepShaver instruction
247		void sheepshaver_cpu::execute_sheep(uint32 opcode)
248		{
#	Line 173 \| Line 253 \| void sheepshaver_cpu::execute_sheep(uint
253		case 0: // EMUL_RETURN
254		QuitEmulator();
255		break;
256	<
256	>
257		case 1: // EXEC_RETURN
258	<	throw sheepshaver_exec_return();
258	>	spcflags().set(SPCFLAG_CPU_EXEC_RETURN);
259		break;
260
261		case 2: // EXEC_NATIVE
262	<	NativeOp((opcode >> 6) & 0x1f);
263	<	pc() = lr();
262	>	NativeOp(NATIVE_OP_field::extract(opcode));
263	>	if (FN_field::test(opcode))
264	>	pc() = lr();
265	>	else
266	>	pc() += 4;
267		break;
268
269	<	default: { // EMUL_OP
270	<	M68kRegisters r68;
188	<	WriteMacInt32(XLM_68K_R25, gpr(25));
189	<	WriteMacInt32(XLM_RUN_MODE, MODE_EMUL_OP);
190	<	for (int i = 0; i < 8; i++)
191	<	r68.d[i] = gpr(8 + i);
192	<	for (int i = 0; i < 7; i++)
193	<	r68.a[i] = gpr(16 + i);
194	<	r68.a[7] = gpr(1);
195	<	EmulOp(&r68, gpr(24), (opcode & 0x3f) - 3);
196	<	for (int i = 0; i < 8; i++)
197	<	gpr(8 + i) = r68.d[i];
198	<	for (int i = 0; i < 7; i++)
199	<	gpr(16 + i) = r68.a[i];
200	<	gpr(1) = r68.a[7];
201	<	WriteMacInt32(XLM_RUN_MODE, MODE_68K);
269	>	default: // EMUL_OP
270	>	execute_emul_op(EMUL_OP_field::extract(opcode) - 3);
271		pc() += 4;
272		break;
273		}
205	–	}
274		}
275
276	<	// Execution loop
277	<	void sheepshaver_cpu::execute(uint32 entry)
276	>	// Compile one instruction
277	>	bool sheepshaver_cpu::compile1(codegen_context_t & cg_context)
278		{
279	<	try {
280	<	pc() = entry;
281	<	powerpc_cpu::execute();
279	>	#if PPC_ENABLE_JIT
280	>	const instr_info_t *ii = cg_context.instr_info;
281	>	if (ii->mnemo != PPC_I(SHEEP))
282	>	return false;
283	>
284	>	bool compiled = false;
285	>	powerpc_dyngen & dg = cg_context.codegen;
286	>	uint32 opcode = cg_context.opcode;
287	>
288	>	switch (opcode & 0x3f) {
289	>	case 0: // EMUL_RETURN
290	>	dg.gen_invoke(QuitEmulator);
291	>	compiled = true;
292	>	break;
293	>
294	>	case 1: // EXEC_RETURN
295	>	dg.gen_spcflags_set(SPCFLAG_CPU_EXEC_RETURN);
296	>	compiled = true;
297	>	break;
298	>
299	>	case 2: { // EXEC_NATIVE
300	>	uint32 selector = NATIVE_OP_field::extract(opcode);
301	>	switch (selector) {
302	>	case NATIVE_PATCH_NAME_REGISTRY:
303	>	dg.gen_invoke(DoPatchNameRegistry);
304	>	compiled = true;
305	>	break;
306	>	case NATIVE_VIDEO_INSTALL_ACCEL:
307	>	dg.gen_invoke(VideoInstallAccel);
308	>	compiled = true;
309	>	break;
310	>	case NATIVE_VIDEO_VBL:
311	>	dg.gen_invoke(VideoVBL);
312	>	compiled = true;
313	>	break;
314	>	case NATIVE_GET_RESOURCE:
315	>	case NATIVE_GET_1_RESOURCE:
316	>	case NATIVE_GET_IND_RESOURCE:
317	>	case NATIVE_GET_1_IND_RESOURCE:
318	>	case NATIVE_R_GET_RESOURCE: {
319	>	static const uint32 get_resource_ptr[] = {
320	>	XLM_GET_RESOURCE,
321	>	XLM_GET_1_RESOURCE,
322	>	XLM_GET_IND_RESOURCE,
323	>	XLM_GET_1_IND_RESOURCE,
324	>	XLM_R_GET_RESOURCE
325	>	};
326	>	uint32 old_get_resource = ReadMacInt32(get_resource_ptr[selector - NATIVE_GET_RESOURCE]);
327	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
328	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::get_resource).ptr();
329	>	dg.gen_invoke_CPU_im(func, old_get_resource);
330	>	compiled = true;
331	>	break;
332	>	}
333	>	case NATIVE_DISABLE_INTERRUPT:
334	>	dg.gen_invoke(DisableInterrupt);
335	>	compiled = true;
336	>	break;
337	>	case NATIVE_ENABLE_INTERRUPT:
338	>	dg.gen_invoke(EnableInterrupt);
339	>	compiled = true;
340	>	break;
341	>	case NATIVE_CHECK_LOAD_INVOC:
342	>	dg.gen_load_T0_GPR(3);
343	>	dg.gen_load_T1_GPR(4);
344	>	dg.gen_se_16_32_T1();
345	>	dg.gen_load_T2_GPR(5);
346	>	dg.gen_invoke_T0_T1_T2((void (*)(uint32, uint32, uint32))check_load_invoc);
347	>	compiled = true;
348	>	break;
349	>	}
350	>	if (FN_field::test(opcode)) {
351	>	if (compiled) {
352	>	dg.gen_load_A0_LR();
353	>	dg.gen_set_PC_A0();
354	>	}
355	>	cg_context.done_compile = true;
356	>	}
357	>	else
358	>	cg_context.done_compile = false;
359	>	break;
360		}
361	<	catch (sheepshaver_exec_return const &) {
362	<	// Nothing, simply return
361	>
362	>	default: { // EMUL_OP
363	>	typedef void (*func_t)(dyngen_cpu_base, uint32);
364	>	func_t func = (func_t)nv_mem_fun(&sheepshaver_cpu::execute_emul_op).ptr();
365	>	dg.gen_invoke_CPU_im(func, EMUL_OP_field::extract(opcode) - 3);
366	>	cg_context.done_compile = false;
367	>	compiled = true;
368	>	break;
369		}
218	–	catch (...) {
219	–	printf("ERROR: execute() received an unknown exception!\n");
220	–	QuitEmulator();
370		}
371	+	return compiled;
372	+	#endif
373	+	return false;
374		}
375
376		// Handle MacOS interrupt
377	<	void sheepshaver_cpu::interrupt(uint32 entry, uint32 sp)
377	>	void sheepshaver_cpu::interrupt(uint32 entry)
378		{
379	<	// Create stack frame
380	<	gpr(1) = sp - 64;
379	>	#if EMUL_TIME_STATS
380	>	interrupt_count++;
381	>	const clock_t interrupt_start = clock();
382	>	#endif
383	>
384	>	#if !MULTICORE_CPU
385	>	// Save program counters and branch registers
386	>	uint32 saved_pc = pc();
387	>	uint32 saved_lr = lr();
388	>	uint32 saved_ctr= ctr();
389	>	uint32 saved_sp = gpr(1);
390	>	#endif
391	>
392	>	// Initialize stack pointer to SheepShaver alternate stack base
393	>	gpr(1) = SignalStackBase() - 64;
394
395		// Build trampoline to return from interrupt
396	<	uint32 trampoline[] = { POWERPC_EMUL_OP \| 1 };
396	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
397
398		// Prepare registers for nanokernel interrupt routine
399	<	kernel_data->v[0x004 >> 2] = gpr(1);
400	<	kernel_data->v[0x018 >> 2] = gpr(6);
399	>	kernel_data->v[0x004 >> 2] = htonl(gpr(1));
400	>	kernel_data->v[0x018 >> 2] = htonl(gpr(6));
401
402	<	gpr(6) = kernel_data->v[0x65c >> 2];
402	>	gpr(6) = ntohl(kernel_data->v[0x65c >> 2]);
403	>	assert(gpr(6) != 0);
404		WriteMacInt32(gpr(6) + 0x13c, gpr(7));
405		WriteMacInt32(gpr(6) + 0x144, gpr(8));
406		WriteMacInt32(gpr(6) + 0x14c, gpr(9));
#	Line 244 \| Line 410 \| void sheepshaver_cpu::interrupt(uint32 e
410		WriteMacInt32(gpr(6) + 0x16c, gpr(13));
411
412		gpr(1) = KernelDataAddr;
413	<	gpr(7) = kernel_data->v[0x660 >> 2];
413	>	gpr(7) = ntohl(kernel_data->v[0x660 >> 2]);
414		gpr(8) = 0;
415	<	gpr(10) = (uint32)trampoline;
416	<	gpr(12) = (uint32)trampoline;
417	<	gpr(13) = cr().get();
415	>	gpr(10) = trampoline.addr();
416	>	gpr(12) = trampoline.addr();
417	>	gpr(13) = get_cr();
418
419		// rlwimi. r7,r7,8,0,0
420		uint32 result = op_ppc_rlwimi::apply(gpr(7), 8, 0x80000000, gpr(7));
#	Line 256 \| Line 422 \| void sheepshaver_cpu::interrupt(uint32 e
422		gpr(7) = result;
423
424		gpr(11) = 0xf072; // MSR (SRR1)
425	<	cr().set((gpr(11) & 0x0fff0000) \| (cr().get() & ~0x0fff0000));
425	>	cr().set((gpr(11) & 0x0fff0000) \| (get_cr() & ~0x0fff0000));
426
427		// Enter nanokernel
428		execute(entry);
429
430	<	// Cleanup stack
431	<	gpr(1) += 64;
430	>	#if !MULTICORE_CPU
431	>	// Restore program counters and branch registers
432	>	pc() = saved_pc;
433	>	lr() = saved_lr;
434	>	ctr()= saved_ctr;
435	>	gpr(1) = saved_sp;
436	>	#endif
437	>
438	>	#if EMUL_TIME_STATS
439	>	interrupt_time += (clock() - interrupt_start);
440	>	#endif
441		}
442
443		// Execute 68k routine
444		void sheepshaver_cpu::execute_68k(uint32 entry, M68kRegisters *r)
445		{
446	+	#if EMUL_TIME_STATS
447	+	exec68k_count++;
448	+	const clock_t exec68k_start = clock();
449	+	#endif
450	+
451		#if SAFE_EXEC_68K
452		if (ReadMacInt32(XLM_RUN_MODE) != MODE_EMUL_OP)
453		printf("FATAL: Execute68k() not called from EMUL_OP mode\n");
#	Line 277 \| Line 457 \| void sheepshaver_cpu::execute_68k(uint32
457		uint32 saved_pc = pc();
458		uint32 saved_lr = lr();
459		uint32 saved_ctr= ctr();
460	+	uint32 saved_cr = get_cr();
461
462		// Create MacOS stack frame
463	+	// FIXME: make sure MacOS doesn't expect PPC registers to live on top
464		uint32 sp = gpr(1);
465	<	gpr(1) -= 56 + 194 + 188;
465	>	gpr(1) -= 56;
466		WriteMacInt32(gpr(1), sp);
467
468		// Save PowerPC registers
469	<	memcpy(Mac2HostAddr(gpr(1)+56), &gpr(13), sizeof(uint32)*(32-13));
469	>	uint32 saved_GPRs[19];
470	>	memcpy(&saved_GPRs[0], &gpr(13), sizeof(uint32)*(32-13));
471		#if SAVE_FP_EXEC_68K
472	<	memcpy(Mac2HostAddr(gpr(1)+56+194), &fpr(14), sizeof(double)(32-14));
472	>	double saved_FPRs[18];
473	>	memcpy(&saved_FPRs[0], &fpr(14), sizeof(double)*(32-14));
474		#endif
475
476		// Setup registers for 68k emulator
477	<	cr().set(0);
294	<	cr().set(2, 1); // Supervisor mode
477	>	cr().set(CR_SO_field<2>::mask()); // Supervisor mode
478		for (int i = 0; i < 8; i++) // d[0]..d[7]
479		gpr(8 + i) = r->d[i];
480		for (int i = 0; i < 7; i++) // a[0]..a[6]
#	Line 301 \| Line 484 \| void sheepshaver_cpu::execute_68k(uint32
484		gpr(25) = ReadMacInt32(XLM_68K_R25); // MSB of SR
485		gpr(26) = 0;
486		gpr(28) = 0; // VBR
487	<	gpr(29) = kernel_data->ed.v[0x74 >> 2]; // Pointer to opcode table
488	<	gpr(30) = kernel_data->ed.v[0x78 >> 2]; // Address of emulator
487	>	gpr(29) = ntohl(kernel_data->ed.v[0x74 >> 2]); // Pointer to opcode table
488	>	gpr(30) = ntohl(kernel_data->ed.v[0x78 >> 2]); // Address of emulator
489		gpr(31) = KernelDataAddr + 0x1000;
490
491		// Push return address (points to EXEC_RETURN opcode) on stack
#	Line 334 \| Line 517 \| void sheepshaver_cpu::execute_68k(uint32
517		r->a[i] = gpr(16 + i);
518
519		// Restore PowerPC registers
520	<	memcpy(&gpr(13), Mac2HostAddr(gpr(1)+56), sizeof(uint32)*(32-13));
520	>	memcpy(&gpr(13), &saved_GPRs[0], sizeof(uint32)*(32-13));
521		#if SAVE_FP_EXEC_68K
522	<	memcpy(&fpr(14), Mac2HostAddr(gpr(1)+56+194), sizeof(double)(32-14));
522	>	memcpy(&fpr(14), &saved_FPRs[0], sizeof(double)*(32-14));
523		#endif
524
525		// Cleanup stack
526	<	gpr(1) += 56 + 194 + 188;
526	>	gpr(1) += 56;
527
528		// Restore program counters and branch registers
529		pc() = saved_pc;
530		lr() = saved_lr;
531		ctr()= saved_ctr;
532	+	set_cr(saved_cr);
533	+
534	+	#if EMUL_TIME_STATS
535	+	exec68k_time += (clock() - exec68k_start);
536	+	#endif
537		}
538
539		// Call MacOS PPC code
540		uint32 sheepshaver_cpu::execute_macos_code(uint32 tvect, int nargs, uint32 const *args)
541		{
542	+	#if EMUL_TIME_STATS
543	+	macos_exec_count++;
544	+	const clock_t macos_exec_start = clock();
545	+	#endif
546	+
547		// Save program counters and branch registers
548		uint32 saved_pc = pc();
549		uint32 saved_lr = lr();
550		uint32 saved_ctr= ctr();
551
552		// Build trampoline with EXEC_RETURN
553	<	uint32 trampoline[] = { POWERPC_EMUL_OP \| 1 };
554	<	lr() = (uint32)trampoline;
553	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
554	>	lr() = trampoline.addr();
555
556		gpr(1) -= 64; // Create stack frame
557		uint32 proc = ReadMacInt32(tvect); // Get routine address
#	Line 389 \| Line 582 \| uint32 sheepshaver_cpu::execute_macos_co
582		lr() = saved_lr;
583		ctr()= saved_ctr;
584
585	+	#if EMUL_TIME_STATS
586	+	macos_exec_time += (clock() - macos_exec_start);
587	+	#endif
588	+
589		return retval;
590		}
591
592	+	// Execute ppc routine
593	+	inline void sheepshaver_cpu::execute_ppc(uint32 entry)
594	+	{
595	+	// Save branch registers
596	+	uint32 saved_lr = lr();
597	+
598	+	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
599	+	WriteMacInt32(trampoline.addr(), POWERPC_EXEC_RETURN);
600	+	lr() = trampoline.addr();
601	+
602	+	execute(entry);
603	+
604	+	// Restore branch registers
605	+	lr() = saved_lr;
606	+	}
607	+
608		// Resource Manager thunk
609		inline void sheepshaver_cpu::get_resource(uint32 old_get_resource)
610		{
611	<	printf("ERROR: get_resource() unimplemented\n");
612	<	QuitEmulator();
611	>	uint32 type = gpr(3);
612	>	int16 id = gpr(4);
613	>
614	>	// Create stack frame
615	>	gpr(1) -= 56;
616	>
617	>	// Call old routine
618	>	execute_ppc(old_get_resource);
619	>
620	>	// Call CheckLoad()
621	>	uint32 handle = gpr(3);
622	>	check_load_invoc(type, id, handle);
623	>	gpr(3) = handle;
624	>
625	>	// Cleanup stack
626	>	gpr(1) += 56;
627		}
628
629
#	Line 408 \| Line 635 \| *static sheepshaver_cpu main_cpu = NULL;**
635		static sheepshaver_cpu *interrupt_cpu = NULL; // CPU emulator to handle interrupts
636		static sheepshaver_cpu *current_cpu = NULL; // Current CPU emulator context
637
638	+	void FlushCodeCache(uintptr start, uintptr end)
639	+	{
640	+	D(bug("FlushCodeCache(%08x, %08x)\n", start, end));
641	+	main_cpu->invalidate_cache_range(start, end);
642	+	#if MULTICORE_CPU
643	+	interrupt_cpu->invalidate_cache_range(start, end);
644	+	#endif
645	+	}
646	+
647	+	static inline void cpu_push(sheepshaver_cpu *new_cpu)
648	+	{
649	+	#if MULTICORE_CPU
650	+	current_cpu = new_cpu;
651	+	#endif
652	+	}
653	+
654	+	static inline void cpu_pop()
655	+	{
656	+	#if MULTICORE_CPU
657	+	current_cpu = main_cpu;
658	+	#endif
659	+	}
660	+
661		// Dump PPC registers
662		static void dump_registers(void)
663		{
#	Line 424 \| Line 674 \| static void dump_log(void)
674		* Initialize CPU emulation
675		*/
676
677	<	static struct sigaction sigsegv_action;
428	<
429	<	#if defined(__powerpc__)
430	<	#include <sys/ucontext.h>
431	<	#endif
432	<
433	<	static void sigsegv_handler(int sig, siginfo_t sip, void scp)
677	>	static sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
678		{
435	–	const uintptr addr = (uintptr)sip->si_addr;
679		#if ENABLE_VOSF
680	<	// Handle screen fault.
681	<	extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
682	<	if (Screen_fault_handler((sigsegv_address_t)addr, SIGSEGV_INVALID_PC))
683	<	return;
680	>	// Handle screen fault
681	>	extern bool Screen_fault_handler(sigsegv_address_t, sigsegv_address_t);
682	>	if (Screen_fault_handler(fault_address, fault_instruction))
683	>	return SIGSEGV_RETURN_SUCCESS;
684		#endif
685	<	#if defined(__powerpc__)
686	<	if (addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
687	<	printf("IGNORE write access to ROM at %08x\n", addr);
688	<	(((ucontext_t *)scp)->uc_mcontext.regs)->nip += 4;
689	<	return;
690	<	}
691	<	if (addr >= 0xf3012000 && addr < 0xf3014000 && 0) {
692	<	printf("IGNORE write access to ROM at %08x\n", addr);
693	<	(((ucontext_t *)scp)->uc_mcontext.regs)->nip += 4;
694	<	return;
685	>
686	>	const uintptr addr = (uintptr)fault_address;
687	>	#if HAVE_SIGSEGV_SKIP_INSTRUCTION
688	>	// Ignore writes to ROM
689	>	if ((addr - ROM_BASE) < ROM_SIZE)
690	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
691	>
692	>	// Get program counter of target CPU
693	>	sheepshaver_cpu * const cpu = current_cpu;
694	>	const uint32 pc = cpu->pc();
695	>
696	>	// Fault in Mac ROM or RAM?
697	>	bool mac_fault = (pc >= ROM_BASE) && (pc < (ROM_BASE + ROM_AREA_SIZE)) \|\| (pc >= RAMBase) && (pc < (RAMBase + RAMSize));
698	>	if (mac_fault) {
699	>
700	>	// "VM settings" during MacOS 8 installation
701	>	if (pc == ROM_BASE + 0x488160 && cpu->gpr(20) == 0xf8000000)
702	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
703	>
704	>	// MacOS 8.5 installation
705	>	else if (pc == ROM_BASE + 0x488140 && cpu->gpr(16) == 0xf8000000)
706	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
707	>
708	>	// MacOS 8 serial drivers on startup
709	>	else if (pc == ROM_BASE + 0x48e080 && (cpu->gpr(8) == 0xf3012002 \|\| cpu->gpr(8) == 0xf3012000))
710	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
711	>
712	>	// MacOS 8.1 serial drivers on startup
713	>	else if (pc == ROM_BASE + 0x48c5e0 && (cpu->gpr(20) == 0xf3012002 \|\| cpu->gpr(20) == 0xf3012000))
714	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
715	>	else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 \|\| cpu->gpr(20) == 0xf3012000))
716	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
717	>
718	>	// Ignore all other faults, if requested
719	>	if (PrefsFindBool("ignoresegv"))
720	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
721		}
453	–	#endif
454	–	printf("Caught SIGSEGV at address %p\n", sip->si_addr);
455	–	printf("Native PC: %08x\n", (((ucontext_t *)scp)->uc_mcontext.regs)->nip);
456	–	printf("Current CPU: %s\n", current_cpu == main_cpu ? "main" : "interrupts");
457	–	#if 1
458	–	dump_registers();
722		#else
723	<	printf("Main CPU context\n");
461	<	main_cpu->dump_registers();
462	<	printf("Interrupts CPU context\n");
463	<	interrupt_cpu->dump_registers();
723	>	#error "FIXME: You don't have the capability to skip instruction within signal handlers"
724		#endif
725	+
726	+	printf("SIGSEGV\n");
727	+	printf(" pc %p\n", fault_instruction);
728	+	printf(" ea %p\n", fault_address);
729	+	printf(" cpu %s\n", current_cpu == main_cpu ? "main" : "interrupts");
730	+	dump_registers();
731		current_cpu->dump_log();
466	–	WriteMacInt32(XLM_IRQ_NEST, 1);
732		enter_mon();
733		QuitEmulator();
734	+
735	+	return SIGSEGV_RETURN_FAILURE;
736		}
737
738		void init_emul_ppc(void)
#	Line 473 \| Line 740 \| void init_emul_ppc(void)
740		// Initialize main CPU emulator
741		main_cpu = new sheepshaver_cpu();
742		main_cpu->set_register(powerpc_registers::GPR(3), any_register((uint32)ROM_BASE + 0x30d000));
743	+	main_cpu->set_register(powerpc_registers::GPR(4), any_register(KernelDataAddr + 0x1000));
744		WriteMacInt32(XLM_RUN_MODE, MODE_68K);
745
746	+	#if MULTICORE_CPU
747		// Initialize alternate CPU emulator to handle interrupts
748		interrupt_cpu = new sheepshaver_cpu();
749	+	#endif
750
751	<	// Install SIGSEGV handler
752	<	sigemptyset(&sigsegv_action.sa_mask);
483	<	sigsegv_action.sa_sigaction = sigsegv_handler;
484	<	sigsegv_action.sa_flags = SA_SIGINFO;
485	<	sigsegv_action.sa_restorer = NULL;
486	<	sigaction(SIGSEGV, &sigsegv_action, NULL);
751	>	// Install the handler for SIGSEGV
752	>	sigsegv_install_handler(sigsegv_handler);
753
754		#if ENABLE_MON
755		// Install "regs" command in cxmon
756		mon_add_command("regs", dump_registers, "regs Dump PowerPC registers\n");
757		mon_add_command("log", dump_log, "log Dump PowerPC emulation log\n");
758		#endif
759	+
760	+	#if EMUL_TIME_STATS
761	+	emul_start_time = clock();
762	+	#endif
763	+	}
764	+
765	+	/*
766	+	* Deinitialize emulation
767	+	*/
768	+
769	+	void exit_emul_ppc(void)
770	+	{
771	+	#if EMUL_TIME_STATS
772	+	clock_t emul_end_time = clock();
773	+
774	+	printf("### Statistics for SheepShaver emulation parts\n");
775	+	const clock_t emul_time = emul_end_time - emul_start_time;
776	+	printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
777	+	printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
778	+	(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
779	+
780	+	#define PRINT_STATS(LABEL, VAR_PREFIX) do { \
781	+	printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count); \
782	+	printf("Total " LABEL " time : %.1f sec (%.1f%%)\n", \
783	+	double(VAR_PREFIX##_time) / double(CLOCKS_PER_SEC), \
784	+	100.0 * double(VAR_PREFIX##_time) / double(emul_time)); \
785	+	} while (0)
786	+
787	+	PRINT_STATS("Execute68k[Trap] execution", exec68k);
788	+	PRINT_STATS("NativeOp execution", native_exec);
789	+	PRINT_STATS("MacOS routine execution", macos_exec);
790	+
791	+	#undef PRINT_STATS
792	+	printf("\n");
793	+	#endif
794	+
795	+	delete main_cpu;
796	+	#if MULTICORE_CPU
797	+	delete interrupt_cpu;
798	+	#endif
799		}
800
801		/*
#	Line 499 \| Line 805 \| void init_emul_ppc(void)
805		void emul_ppc(uint32 entry)
806		{
807		current_cpu = main_cpu;
808	+	#if 0
809		current_cpu->start_log();
810	+	#endif
811	+	// start emulation loop and enable code translation or caching
812		current_cpu->execute(entry);
813		}
814
#	Line 507 \| Line 816 \| void emul_ppc(uint32 entry)
816		* Handle PowerPC interrupt
817		*/
818
819	<	// Atomic operations
511	<	extern int atomic_add(int *var, int v);
512	<	extern int atomic_and(int *var, int v);
513	<	extern int atomic_or(int *var, int v);
514	<
819	>	#if ASYNC_IRQ
820		void HandleInterrupt(void)
821		{
822	+	main_cpu->handle_interrupt();
823	+	}
824	+	#else
825	+	void TriggerInterrupt(void)
826	+	{
827	+	#if 0
828	+	WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
829	+	#else
830	+	// Trigger interrupt to main cpu only
831	+	if (main_cpu)
832	+	main_cpu->trigger_interrupt();
833	+	#endif
834	+	}
835	+	#endif
836	+
837	+	void sheepshaver_cpu::handle_interrupt(void)
838	+	{
839		// Do nothing if interrupts are disabled
840	<	if (ReadMacInt32(XLM_IRQ_NEST) > 0 \|\| InterruptFlags == 0)
840	>	if ((int32 )XLM_IRQ_NEST > 0)
841		return;
842
843	<	// Do nothing if CPU objects are not initialized yet
844	<	if (current_cpu == NULL)
843	>	// Do nothing if there is no interrupt pending
844	>	if (InterruptFlags == 0)
845		return;
846
847		// Disable MacOS stack sniffer
#	Line 531 \| Line 853 \| void HandleInterrupt(void)
853		// 68k emulator active, trigger 68k interrupt level 1
854		assert(current_cpu == main_cpu);
855		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
856	<	main_cpu->set_cr(main_cpu->get_cr() \| tswap32(kernel_data->v[0x674 >> 2]));
856	>	set_cr(get_cr() \| tswap32(kernel_data->v[0x674 >> 2]));
857		break;
858
859		#if INTERRUPTS_IN_NATIVE_MODE
860		case MODE_NATIVE:
861		// 68k emulator inactive, in nanokernel?
862		assert(current_cpu == main_cpu);
863	<	if (main_cpu->gpr(1) != KernelDataAddr) {
863	>	if (gpr(1) != KernelDataAddr) {
864		// Prepare for 68k interrupt level 1
865		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
866		WriteMacInt32(tswap32(kernel_data->v[0x658 >> 2]) + 0xdc,
#	Line 546 \| Line 868 \| void HandleInterrupt(void)
868		\| tswap32(kernel_data->v[0x674 >> 2]));
869
870		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
871	<	atomic_add((int32 *)XLM_IRQ_NEST, htonl(1));
872	<	current_cpu = interrupt_cpu;
871	>	DisableInterrupt();
872	>	cpu_push(interrupt_cpu);
873		if (ROMType == ROMTYPE_NEWWORLD)
874	<	current_cpu->interrupt(ROM_BASE + 0x312b1c, main_cpu->get_sp());
874	>	current_cpu->interrupt(ROM_BASE + 0x312b1c);
875		else
876	<	current_cpu->interrupt(ROM_BASE + 0x312a3c, main_cpu->get_sp());
877	<	current_cpu = main_cpu;
876	>	current_cpu->interrupt(ROM_BASE + 0x312a3c);
877	>	cpu_pop();
878		}
879		break;
880		#endif
#	Line 566 \| Line 888 \| void HandleInterrupt(void)
888		M68kRegisters r;
889		uint32 old_r25 = ReadMacInt32(XLM_68K_R25); // Save interrupt level
890		WriteMacInt32(XLM_68K_R25, 0x21); // Execute with interrupt level 1
891	<	static const uint16 proc[] = {
892	<	0x3f3c, 0x0000, // move.w #$0000,-(sp) (fake format word)
893	<	0x487a, 0x000a, // pea @1(pc) (return address)
894	<	0x40e7, // move sr,-(sp) (saved SR)
895	<	0x2078, 0x0064, // move.l $64,a0
896	<	0x4ed0, // jmp (a0)
897	<	M68K_RTS // @1
891	>	static const uint8 proc[] = {
892	>	0x3f, 0x3c, 0x00, 0x00, // move.w #$0000,-(sp) (fake format word)
893	>	0x48, 0x7a, 0x00, 0x0a, // pea @1(pc) (return address)
894	>	0x40, 0xe7, // move sr,-(sp) (saved SR)
895	>	0x20, 0x78, 0x00, 0x064, // move.l $64,a0
896	>	0x4e, 0xd0, // jmp (a0)
897	>	M68K_RTS >> 8, M68K_RTS & 0xff // @1
898		};
899		Execute68k((uint32)proc, &r);
900		WriteMacInt32(XLM_68K_R25, old_r25); // Restore interrupt level
#	Line 582 \| Line 904 \| void HandleInterrupt(void)
904		if (InterruptFlags & INTFLAG_VIA) {
905		ClearInterruptFlag(INTFLAG_VIA);
906		ADBInterrupt();
907	<	ExecutePPC(VideoVBL);
907	>	ExecuteNative(NATIVE_VIDEO_VBL);
908		}
909		}
910		#endif
#	Line 592 \| Line 914 \| void HandleInterrupt(void)
914		}
915		}
916
595	–	/*
596	–	* Execute NATIVE_OP opcode (called by PowerPC emulator)
597	–	*/
598	–
599	–	#define POWERPC_NATIVE_OP(selector) \
600	–	{ tswap32(POWERPC_EMUL_OP \| 2 \| (((uint32)selector) << 6)) }
601	–
602	–	// FIXME: Make sure 32-bit relocations are used
603	–	const uint32 NativeOpTable[NATIVE_OP_MAX] = {
604	–	POWERPC_NATIVE_OP(NATIVE_PATCH_NAME_REGISTRY),
605	–	POWERPC_NATIVE_OP(NATIVE_VIDEO_INSTALL_ACCEL),
606	–	POWERPC_NATIVE_OP(NATIVE_VIDEO_VBL),
607	–	POWERPC_NATIVE_OP(NATIVE_VIDEO_DO_DRIVER_IO),
608	–	POWERPC_NATIVE_OP(NATIVE_ETHER_IRQ),
609	–	POWERPC_NATIVE_OP(NATIVE_ETHER_INIT),
610	–	POWERPC_NATIVE_OP(NATIVE_ETHER_TERM),
611	–	POWERPC_NATIVE_OP(NATIVE_ETHER_OPEN),
612	–	POWERPC_NATIVE_OP(NATIVE_ETHER_CLOSE),
613	–	POWERPC_NATIVE_OP(NATIVE_ETHER_WPUT),
614	–	POWERPC_NATIVE_OP(NATIVE_ETHER_RSRV),
615	–	POWERPC_NATIVE_OP(NATIVE_SERIAL_NOTHING),
616	–	POWERPC_NATIVE_OP(NATIVE_SERIAL_OPEN),
617	–	POWERPC_NATIVE_OP(NATIVE_SERIAL_PRIME_IN),
618	–	POWERPC_NATIVE_OP(NATIVE_SERIAL_PRIME_OUT),
619	–	POWERPC_NATIVE_OP(NATIVE_SERIAL_CONTROL),
620	–	POWERPC_NATIVE_OP(NATIVE_SERIAL_STATUS),
621	–	POWERPC_NATIVE_OP(NATIVE_SERIAL_CLOSE),
622	–	POWERPC_NATIVE_OP(NATIVE_GET_RESOURCE),
623	–	POWERPC_NATIVE_OP(NATIVE_GET_1_RESOURCE),
624	–	POWERPC_NATIVE_OP(NATIVE_GET_IND_RESOURCE),
625	–	POWERPC_NATIVE_OP(NATIVE_GET_1_IND_RESOURCE),
626	–	POWERPC_NATIVE_OP(NATIVE_R_GET_RESOURCE),
627	–	};
628	–
917		static void get_resource(void);
918		static void get_1_resource(void);
919		static void get_ind_resource(void);
#	Line 636 \| Line 924 \| static void r_get_resource(void);
924
925		static void NativeOp(int selector)
926		{
927	+	#if EMUL_TIME_STATS
928	+	native_exec_count++;
929	+	const clock_t native_exec_start = clock();
930	+	#endif
931	+
932		switch (selector) {
933		case NATIVE_PATCH_NAME_REGISTRY:
934		DoPatchNameRegistry();
#	Line 650 \| Line 943 \| static void NativeOp(int selector)
943		GPR(3) = (int32)(int16)VideoDoDriverIO((void )GPR(3), (void )GPR(4),
944		(void *)GPR(5), GPR(6), GPR(7));
945		break;
946	<	case NATIVE_GET_RESOURCE:
947	<	get_resource();
946	>	#ifdef WORDS_BIGENDIAN
947	>	case NATIVE_ETHER_IRQ:
948	>	EtherIRQ();
949		break;
950	<	case NATIVE_GET_1_RESOURCE:
951	<	get_1_resource();
950	>	case NATIVE_ETHER_INIT:
951	>	GPR(3) = InitStreamModule((void *)GPR(3));
952		break;
953	<	case NATIVE_GET_IND_RESOURCE:
954	<	get_ind_resource();
953	>	case NATIVE_ETHER_TERM:
954	>	TerminateStreamModule();
955		break;
956	<	case NATIVE_GET_1_IND_RESOURCE:
957	<	get_1_ind_resource();
956	>	case NATIVE_ETHER_OPEN:
957	>	GPR(3) = ether_open((queue_t )GPR(3), (void )GPR(4), GPR(5), GPR(6), (void*)GPR(7));
958	>	break;
959	>	case NATIVE_ETHER_CLOSE:
960	>	GPR(3) = ether_close((queue_t )GPR(3), GPR(4), (void )GPR(5));
961		break;
962	<	case NATIVE_R_GET_RESOURCE:
963	<	r_get_resource();
962	>	case NATIVE_ETHER_WPUT:
963	>	GPR(3) = ether_wput((queue_t )GPR(3), (mblk_t )GPR(4));
964	>	break;
965	>	case NATIVE_ETHER_RSRV:
966	>	GPR(3) = ether_rsrv((queue_t *)GPR(3));
967	>	break;
968	>	#else
969	>	case NATIVE_ETHER_INIT:
970	>	// FIXME: needs more complicated thunks
971	>	GPR(3) = false;
972		break;
973	+	#endif
974		case NATIVE_SERIAL_NOTHING:
975		case NATIVE_SERIAL_OPEN:
976		case NATIVE_SERIAL_PRIME_IN:
#	Line 685 \| Line 991 \| static void NativeOp(int selector)
991		GPR(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](GPR(3), GPR(4));
992		break;
993		}
994	+	case NATIVE_GET_RESOURCE:
995	+	case NATIVE_GET_1_RESOURCE:
996	+	case NATIVE_GET_IND_RESOURCE:
997	+	case NATIVE_GET_1_IND_RESOURCE:
998	+	case NATIVE_R_GET_RESOURCE: {
999	+	typedef void (*GetResourceCallback)(void);
1000	+	static const GetResourceCallback get_resource_callbacks[] = {
1001	+	get_resource,
1002	+	get_1_resource,
1003	+	get_ind_resource,
1004	+	get_1_ind_resource,
1005	+	r_get_resource
1006	+	};
1007	+	get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
1008	+	break;
1009	+	}
1010	+	case NATIVE_DISABLE_INTERRUPT:
1011	+	DisableInterrupt();
1012	+	break;
1013	+	case NATIVE_ENABLE_INTERRUPT:
1014	+	EnableInterrupt();
1015	+	break;
1016	+	case NATIVE_MAKE_EXECUTABLE:
1017	+	MakeExecutable(0, (void *)GPR(4), GPR(5));
1018	+	break;
1019	+	case NATIVE_CHECK_LOAD_INVOC:
1020	+	check_load_invoc(GPR(3), GPR(4), GPR(5));
1021	+	break;
1022		default:
1023		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
1024		QuitEmulator();
1025		break;
1026		}
693	–	}
1027
1028	<	/*
1029	<	* Execute native subroutine (LR must contain return address)
1030	<	*/
698	<
699	<	void ExecuteNative(int selector)
700	<	{
701	<	uint32 tvect[2];
702	<	tvect[0] = tswap32(POWERPC_NATIVE_OP_FUNC(selector));
703	<	tvect[1] = 0; // Fake TVECT
704	<	RoutineDescriptor desc = BUILD_PPC_ROUTINE_DESCRIPTOR(0, tvect);
705	<	M68kRegisters r;
706	<	Execute68k((uint32)&desc, &r);
1028	>	#if EMUL_TIME_STATS
1029	>	native_exec_time += (clock() - native_exec_start);
1030	>	#endif
1031		}
1032
1033		/*
#	Line 724 \| Line 1048 \| void Execute68k(uint32 pc, M68kRegisters
1048
1049		void Execute68kTrap(uint16 trap, M68kRegisters *r)
1050		{
1051	<	uint16 proc[2] = {trap, M68K_RTS};
1052	<	Execute68k((uint32)proc, r);
1051	>	SheepVar proc_var(4);
1052	>	uint32 proc = proc_var.addr();
1053	>	WriteMacInt16(proc, trap);
1054	>	WriteMacInt16(proc + 2, M68K_RTS);
1055	>	Execute68k(proc, r);
1056		}
1057
1058		/*
#	Line 780 \| Line 1107 \| uint32 call_macos7(uint32 tvect, uint32
1107		}
1108
1109		/*
783	–	* Atomic operations
784	–	*/
785	–
786	–	int atomic_add(int *var, int v)
787	–	{
788	–	int ret = *var;
789	–	*var += v;
790	–	return ret;
791	–	}
792	–
793	–	int atomic_and(int *var, int v)
794	–	{
795	–	int ret = *var;
796	–	*var &= v;
797	–	return ret;
798	–	}
799	–
800	–	int atomic_or(int *var, int v)
801	–	{
802	–	int ret = *var;
803	–	*var \|= v;
804	–	return ret;
805	–	}
806	–
807	–	/*
1110		* Resource Manager thunks
1111		*/
1112
811	–	extern "C" void check_load_invoc(uint32 type, int16 id, uint16 **h);
812	–
1113		void get_resource(void)
1114		{
1115		current_cpu->get_resource(ReadMacInt32(XLM_GET_RESOURCE));

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+Removed lines
-+
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+Changed lines
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+Changed lines

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents): Revision 1.1 by gbeauche, 2003-09-07T14:25:01Z vs. Revision 1.29 by gbeauche, 2004-02-20T17:20:15Z

Diff Legend

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.1 by gbeauche, 2003-09-07T14:25:01Z vs.
Revision 1.29 by gbeauche, 2004-02-20T17:20:15Z