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

Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.2 by gbeauche, 2003-09-28T21:27:34Z vs.
Revision 1.21 by gbeauche, 2003-12-04T17:26:38Z

#	Line 21 | Line 21
21		#include "sysdeps.h"
22		#include "cpu_emulation.h"
23		#include "main.h"
24	+	#include "prefs.h"
25		#include "xlowmem.h"
26		#include "emul_op.h"
27		#include "rom_patches.h"
28		#include "macos_util.h"
29		#include "block-alloc.hpp"
30		#include "sigsegv.h"
30	–	#include "spcflags.h"
31		#include "cpu/ppc/ppc-cpu.hpp"
32		#include "cpu/ppc/ppc-operations.hpp"
33	+	#include "cpu/ppc/ppc-instructions.hpp"
34	+	#include "thunks.h"
35
36		// Used for NativeOp trampolines
37		#include "video.h"
38		#include "name_registry.h"
39		#include "serial.h"
40	+	#include "ether.h"
41
42		#include <stdio.h>
43
#	Line 43 | 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 55 | Line 73 | static void enter_mon(void)
73		#endif
74		}
75
76	+	// PowerPC EmulOp to exit from emulation looop
77	+	const uint32 POWERPC_EXEC_RETURN = POWERPC_EMUL_OP | 1;
78	+
79		// Enable multicore (main/interrupts) cpu emulation?
80	<	#define MULTICORE_CPU 0
80	>	#define MULTICORE_CPU (ASYNC_IRQ ? 1 : 0)
81
82		// Enable Execute68k() safety checks?
83		#define SAFE_EXEC_68K 1
#	Line 70 | Line 91 | static void enter_mon(void)
91		// Interrupts in native mode?
92		#define INTERRUPTS_IN_NATIVE_MODE 1
93
94	<	// 68k Emulator Data
95	<	struct EmulatorData {
75	<	uint32  v[0x400];
76	<	};
94	>	// Pointer to Kernel Data
95	>	static KernelData * const kernel_data = (KernelData *)KERNEL_DATA_BASE;
96
97	<	// Kernel Data
98	<	struct KernelData {
80	<	uint32  v[0x400];
81	<	EmulatorData ed;
82	<	};
97	>	// SIGSEGV handler
98	>	static sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
99
100	<	// Pointer to Kernel Data
101	<	static KernelData * const kernel_data = (KernelData *)0x68ffe000;
100	>	// JIT Compiler enabled?
101	>	static inline bool enable_jit_p()
102	>	{
103	>	return PrefsFindBool("jit");
104	>	}
105
106
107		/**
108		*              PowerPC emulator glue with special 'sheep' opcodes
109		**/
110
111	<	struct sheepshaver_exec_return { };
111	>	enum {
112	>	PPC_I(SHEEP) = PPC_I(MAX),
113	>	PPC_I(SHEEP_MAX)
114	>	};
115
116		class sheepshaver_cpu
117		: public powerpc_cpu
#	Line 99 | Line 121 | class sheepshaver_cpu
121
122		public:
123
124	<	sheepshaver_cpu()
125	<	: powerpc_cpu()
104	<	{ init_decoder(); }
124	>	// Constructor
125	>	sheepshaver_cpu();
126
127		// Condition Register accessors
128		uint32 get_cr() const           { return cr().get(); }
129		void set_cr(uint32 v)           { cr().set(v); }
130
110	–	// Execution loop
111	–	void execute(uint32 pc);
112	–
131		// Execute 68k routine
132		void execute_68k(uint32 entry, M68kRegisters *r);
133
#	Line 123 | Line 141 | public:
141		void get_resource(uint32 old_get_resource);
142
143		// Handle MacOS interrupt
144	<	void interrupt(uint32 entry, sheepshaver_cpu *cpu);
145	<
128	<	// spcflags for interrupts handling
129	<	static uint32 spcflags;
144	>	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)
#	Line 136 | Line 152 | public:
152		// FIXME: really make surre array allocation fail at link time?
153		void *operator new[](size_t);
154		void operator delete[](void *p);
155	+
156	+	// Make sure the SIGSEGV handler can access CPU registers
157	+	friend sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
158		};
159
141	–	uint32 sheepshaver_cpu::spcflags = 0;
160		lazy_allocator< sheepshaver_cpu > allocator_helper< sheepshaver_cpu, lazy_allocator >::allocator;
161
162	+	sheepshaver_cpu::sheepshaver_cpu()
163	+	: powerpc_cpu(enable_jit_p())
164	+	{
165	+	init_decoder();
166	+	}
167	+
168		void sheepshaver_cpu::init_decoder()
169		{
170		#ifndef PPC_NO_STATIC_II_INDEX_TABLE
#	Line 152 | Line 176 | void sheepshaver_cpu::init_decoder()
176
177		static const instr_info_t sheep_ii_table[] = {
178		{ "sheep",
179	<	(execute_fn)&sheepshaver_cpu::execute_sheep,
179	>	(execute_pmf)&sheepshaver_cpu::execute_sheep,
180		NULL,
181	<	D_form, 6, 0, CFLOW_TRAP
181	>	PPC_I(SHEEP),
182	>	D_form, 6, 0, CFLOW_JUMP | CFLOW_TRAP
183		}
184		};
185
#	Line 191 | Line 216 | void sheepshaver_cpu::execute_sheep(uint
216		case 0:         // EMUL_RETURN
217		QuitEmulator();
218		break;
219	<
219	>
220		case 1:         // EXEC_RETURN
221	<	throw sheepshaver_exec_return();
221	>	spcflags().set(SPCFLAG_CPU_EXEC_RETURN);
222		break;
223
224		case 2:         // EXEC_NATIVE
#	Line 226 | Line 251 | void sheepshaver_cpu::execute_sheep(uint
251		}
252		}
253
229	–	// Checks for pending interrupts
230	–	struct execute_nothing {
231	–	static inline void execute(powerpc_cpu *) { }
232	–	};
233	–
234	–	static void HandleInterrupt(void);
235	–
236	–	struct execute_spcflags_check {
237	–	static inline void execute(powerpc_cpu *cpu) {
238	–	if (SPCFLAGS_TEST(SPCFLAG_ALL_BUT_EXEC_RETURN)) {
239	–	if (SPCFLAGS_TEST( SPCFLAG_ENTER_MON )) {
240	–	SPCFLAGS_CLEAR( SPCFLAG_ENTER_MON );
241	–	enter_mon();
242	–	}
243	–	if (SPCFLAGS_TEST( SPCFLAG_DOINT )) {
244	–	SPCFLAGS_CLEAR( SPCFLAG_DOINT );
245	–	HandleInterrupt();
246	–	}
247	–	if (SPCFLAGS_TEST( SPCFLAG_INT )) {
248	–	SPCFLAGS_CLEAR( SPCFLAG_INT );
249	–	SPCFLAGS_SET( SPCFLAG_DOINT );
250	–	}
251	–	}
252	–	}
253	–	};
254	–
255	–	// Execution loop
256	–	void sheepshaver_cpu::execute(uint32 entry)
257	–	{
258	–	try {
259	–	pc() = entry;
260	–	powerpc_cpu::do_execute<execute_nothing, execute_spcflags_check>();
261	–	}
262	–	catch (sheepshaver_exec_return const &) {
263	–	// Nothing, simply return
264	–	}
265	–	catch (...) {
266	–	printf("ERROR: execute() received an unknown exception!\n");
267	–	QuitEmulator();
268	–	}
269	–	}
270	–
254		// Handle MacOS interrupt
255	<	void sheepshaver_cpu::interrupt(uint32 entry, sheepshaver_cpu *cpu)
255	>	void sheepshaver_cpu::interrupt(uint32 entry)
256		{
257	<	#if MULTICORE_CPU
258	<	// Initialize stack pointer from previous CPU running
259	<	gpr(1) = cpu->gpr(1);
260	<	#else
257	>	#if EMUL_TIME_STATS
258	>	interrupt_count++;
259	>	const clock_t interrupt_start = clock();
260	>	#endif
261	>
262	>	#if !MULTICORE_CPU
263		// Save program counters and branch registers
264		uint32 saved_pc = pc();
265		uint32 saved_lr = lr();
266		uint32 saved_ctr= ctr();
267	+	uint32 saved_sp = gpr(1);
268		#endif
269
270	<	// Create stack frame
271	<	gpr(1) -= 64;
270	>	// Initialize stack pointer to SheepShaver alternate stack base
271	>	SheepArray<64> stack_area;
272	>	gpr(1) = stack_area.addr();
273
274		// Build trampoline to return from interrupt
275	<	uint32 trampoline[] = { POWERPC_EMUL_OP | 1 };
275	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
276
277		// Prepare registers for nanokernel interrupt routine
278	<	kernel_data->v[0x004 >> 2] = gpr(1);
279	<	kernel_data->v[0x018 >> 2] = gpr(6);
278	>	kernel_data->v[0x004 >> 2] = htonl(gpr(1));
279	>	kernel_data->v[0x018 >> 2] = htonl(gpr(6));
280
281	<	gpr(6) = kernel_data->v[0x65c >> 2];
281	>	gpr(6) = ntohl(kernel_data->v[0x65c >> 2]);
282		assert(gpr(6) != 0);
283		WriteMacInt32(gpr(6) + 0x13c, gpr(7));
284		WriteMacInt32(gpr(6) + 0x144, gpr(8));
#	Line 302 | Line 289 | void sheepshaver_cpu::interrupt(uint32 e
289		WriteMacInt32(gpr(6) + 0x16c, gpr(13));
290
291		gpr(1)  = KernelDataAddr;
292	<	gpr(7)  = kernel_data->v[0x660 >> 2];
292	>	gpr(7)  = ntohl(kernel_data->v[0x660 >> 2]);
293		gpr(8)  = 0;
294	<	gpr(10) = (uint32)trampoline;
295	<	gpr(12) = (uint32)trampoline;
296	<	gpr(13) = cr().get();
294	>	gpr(10) = trampoline.addr();
295	>	gpr(12) = trampoline.addr();
296	>	gpr(13) = get_cr();
297
298		// rlwimi. r7,r7,8,0,0
299		uint32 result = op_ppc_rlwimi::apply(gpr(7), 8, 0x80000000, gpr(7));
#	Line 314 | Line 301 | void sheepshaver_cpu::interrupt(uint32 e
301		gpr(7) = result;
302
303		gpr(11) = 0xf072; // MSR (SRR1)
304	<	cr().set((gpr(11) & 0x0fff0000) | (cr().get() & ~0x0fff0000));
304	>	cr().set((gpr(11) & 0x0fff0000) | (get_cr() & ~0x0fff0000));
305
306		// Enter nanokernel
307		execute(entry);
308
322	–	// Cleanup stack
323	–	gpr(1) += 64;
324	–
309		#if !MULTICORE_CPU
310		// Restore program counters and branch registers
311		pc() = saved_pc;
312		lr() = saved_lr;
313		ctr()= saved_ctr;
314	+	gpr(1) = saved_sp;
315	+	#endif
316	+
317	+	#if EMUL_TIME_STATS
318	+	interrupt_time += (clock() - interrupt_start);
319		#endif
320		}
321
322		// Execute 68k routine
323		void sheepshaver_cpu::execute_68k(uint32 entry, M68kRegisters *r)
324		{
325	+	#if EMUL_TIME_STATS
326	+	exec68k_count++;
327	+	const clock_t exec68k_start = clock();
328	+	#endif
329	+
330		#if SAFE_EXEC_68K
331		if (ReadMacInt32(XLM_RUN_MODE) != MODE_EMUL_OP)
332		printf("FATAL: Execute68k() not called from EMUL_OP mode\n");
#	Line 342 | Line 336 | void sheepshaver_cpu::execute_68k(uint32
336		uint32 saved_pc = pc();
337		uint32 saved_lr = lr();
338		uint32 saved_ctr= ctr();
339	+	uint32 saved_cr = get_cr();
340
341		// Create MacOS stack frame
342	+	// FIXME: make sure MacOS doesn't expect PPC registers to live on top
343		uint32 sp = gpr(1);
344	<	gpr(1) -= 56 + 19*4 + 18*8;
344	>	gpr(1) -= 56;
345		WriteMacInt32(gpr(1), sp);
346
347		// Save PowerPC registers
348	<	memcpy(Mac2HostAddr(gpr(1)+56), &gpr(13), sizeof(uint32)*(32-13));
348	>	uint32 saved_GPRs[19];
349	>	memcpy(&saved_GPRs[0], &gpr(13), sizeof(uint32)*(32-13));
350		#if SAVE_FP_EXEC_68K
351	<	memcpy(Mac2HostAddr(gpr(1)+56+19*4), &fpr(14), sizeof(double)*(32-14));
351	>	double saved_FPRs[18];
352	>	memcpy(&saved_FPRs[0], &fpr(14), sizeof(double)*(32-14));
353		#endif
354
355		// Setup registers for 68k emulator
#	Line 365 | Line 363 | void sheepshaver_cpu::execute_68k(uint32
363		gpr(25) = ReadMacInt32(XLM_68K_R25);            // MSB of SR
364		gpr(26) = 0;
365		gpr(28) = 0;                                                            // VBR
366	<	gpr(29) = kernel_data->ed.v[0x74 >> 2];         // Pointer to opcode table
367	<	gpr(30) = kernel_data->ed.v[0x78 >> 2];         // Address of emulator
366	>	gpr(29) = ntohl(kernel_data->ed.v[0x74 >> 2]);          // Pointer to opcode table
367	>	gpr(30) = ntohl(kernel_data->ed.v[0x78 >> 2]);          // Address of emulator
368		gpr(31) = KernelDataAddr + 0x1000;
369
370		// Push return address (points to EXEC_RETURN opcode) on stack
#	Line 398 | Line 396 | void sheepshaver_cpu::execute_68k(uint32
396		r->a[i] = gpr(16 + i);
397
398		// Restore PowerPC registers
399	<	memcpy(&gpr(13), Mac2HostAddr(gpr(1)+56), sizeof(uint32)*(32-13));
399	>	memcpy(&gpr(13), &saved_GPRs[0], sizeof(uint32)*(32-13));
400		#if SAVE_FP_EXEC_68K
401	<	memcpy(&fpr(14), Mac2HostAddr(gpr(1)+56+19*4), sizeof(double)*(32-14));
401	>	memcpy(&fpr(14), &saved_FPRs[0], sizeof(double)*(32-14));
402		#endif
403
404		// Cleanup stack
405	<	gpr(1) += 56 + 19*4 + 18*8;
405	>	gpr(1) += 56;
406
407		// Restore program counters and branch registers
408		pc() = saved_pc;
409		lr() = saved_lr;
410		ctr()= saved_ctr;
411	+	set_cr(saved_cr);
412	+
413	+	#if EMUL_TIME_STATS
414	+	exec68k_time += (clock() - exec68k_start);
415	+	#endif
416		}
417
418		// Call MacOS PPC code
419		uint32 sheepshaver_cpu::execute_macos_code(uint32 tvect, int nargs, uint32 const *args)
420		{
421	+	#if EMUL_TIME_STATS
422	+	macos_exec_count++;
423	+	const clock_t macos_exec_start = clock();
424	+	#endif
425	+
426		// Save program counters and branch registers
427		uint32 saved_pc = pc();
428		uint32 saved_lr = lr();
429		uint32 saved_ctr= ctr();
430
431		// Build trampoline with EXEC_RETURN
432	<	uint32 trampoline[] = { POWERPC_EMUL_OP | 1 };
433	<	lr() = (uint32)trampoline;
432	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
433	>	lr() = trampoline.addr();
434
435		gpr(1) -= 64;                                                           // Create stack frame
436		uint32 proc = ReadMacInt32(tvect);                      // Get routine address
#	Line 453 | Line 461 | uint32 sheepshaver_cpu::execute_macos_co
461		lr() = saved_lr;
462		ctr()= saved_ctr;
463
464	+	#if EMUL_TIME_STATS
465	+	macos_exec_time += (clock() - macos_exec_start);
466	+	#endif
467	+
468		return retval;
469		}
470
#	Line 461 | Line 473 | inline void sheepshaver_cpu::execute_ppc
473		{
474		// Save branch registers
475		uint32 saved_lr = lr();
464	–	uint32 saved_ctr= ctr();
476
477	<	const uint32 trampoline[] = { POWERPC_EMUL_OP | 1 };
477	>	SheepVar32 trampoline = POWERPC_EXEC_RETURN;
478	>	WriteMacInt32(trampoline.addr(), POWERPC_EXEC_RETURN);
479	>	lr() = trampoline.addr();
480
468	–	lr() = (uint32)trampoline;
469	–	ctr()= entry;
481		execute(entry);
482
483		// Restore branch registers
484		lr() = saved_lr;
474	–	ctr()= saved_ctr;
485		}
486
487		// Resource Manager thunk
488	<	extern "C" void check_load_invoc(uint32 type, int16 id, uint16 **h);
488	>	extern "C" void check_load_invoc(uint32 type, int16 id, uint32 h);
489
490		inline void sheepshaver_cpu::get_resource(uint32 old_get_resource)
491		{
#	Line 487 | Line 497 | inline void sheepshaver_cpu::get_resourc
497
498		// Call old routine
499		execute_ppc(old_get_resource);
490	–	uint16 **handle = (uint16 **)gpr(3);
500
501		// Call CheckLoad()
502	+	uint32 handle = gpr(3);
503		check_load_invoc(type, id, handle);
504	<	gpr(3) = (uint32)handle;
504	>	gpr(3) = handle;
505
506		// Cleanup stack
507		gpr(1) += 56;
#	Line 506 | Line 516 | static sheepshaver_cpu *main_cpu = NULL;
516		static sheepshaver_cpu *interrupt_cpu = NULL;   // CPU emulator to handle interrupts
517		static sheepshaver_cpu *current_cpu = NULL;             // Current CPU emulator context
518
519	+	void FlushCodeCache(uintptr start, uintptr end)
520	+	{
521	+	D(bug("FlushCodeCache(%08x, %08x)\n", start, end));
522	+	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
#	Line 536 | Line 555 | static void dump_log(void)
555		*  Initialize CPU emulation
556		*/
557
558	<	static struct sigaction sigsegv_action;
540	<
541	<	#if defined(__powerpc__)
542	<	#include <sys/ucontext.h>
543	<	#endif
544	<
545	<	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp)
558	>	static sigsegv_return_t sigsegv_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction)
559		{
547	–	const uintptr addr = (uintptr)sip->si_addr;
560		#if ENABLE_VOSF
561	<	// Handle screen fault.
562	<	extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
563	<	if (Screen_fault_handler((sigsegv_address_t)addr, SIGSEGV_INVALID_PC))
564	<	return;
561	>	// Handle screen fault
562	>	extern bool Screen_fault_handler(sigsegv_address_t, sigsegv_address_t);
563	>	if (Screen_fault_handler(fault_address, fault_instruction))
564	>	return SIGSEGV_RETURN_SUCCESS;
565		#endif
566	<	#if defined(__powerpc__)
567	<	if (addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
568	<	printf("IGNORE write access to ROM at %08x\n", addr);
569	<	(((ucontext_t *)scp)->uc_mcontext.regs)->nip += 4;
570	<	return;
571	<	}
572	<	if (addr >= 0xf3012000 && addr < 0xf3014000 && 0) {
573	<	printf("IGNORE write access to ROM at %08x\n", addr);
574	<	(((ucontext_t *)scp)->uc_mcontext.regs)->nip += 4;
575	<	return;
566	>
567	>	const uintptr addr = (uintptr)fault_address;
568	>	#if HAVE_SIGSEGV_SKIP_INSTRUCTION
569	>	// Ignore writes to ROM
570	>	if ((addr - ROM_BASE) < ROM_SIZE)
571	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
572	>
573	>	// Get program counter of target CPU
574	>	sheepshaver_cpu * const cpu = current_cpu;
575	>	const uint32 pc = cpu->pc();
576	>
577	>	// Fault in Mac ROM or RAM?
578	>	bool mac_fault = (pc >= ROM_BASE) && (pc < (ROM_BASE + ROM_AREA_SIZE)) || (pc >= RAMBase) && (pc < (RAMBase + RAMSize));
579	>	if (mac_fault) {
580	>
581	>	// "VM settings" during MacOS 8 installation
582	>	if (pc == ROM_BASE + 0x488160 && cpu->gpr(20) == 0xf8000000)
583	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
584	>
585	>	// MacOS 8.5 installation
586	>	else if (pc == ROM_BASE + 0x488140 && cpu->gpr(16) == 0xf8000000)
587	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
588	>
589	>	// MacOS 8 serial drivers on startup
590	>	else if (pc == ROM_BASE + 0x48e080 && (cpu->gpr(8) == 0xf3012002 || cpu->gpr(8) == 0xf3012000))
591	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
592	>
593	>	// MacOS 8.1 serial drivers on startup
594	>	else if (pc == ROM_BASE + 0x48c5e0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
595	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
596	>	else if (pc == ROM_BASE + 0x4a10a0 && (cpu->gpr(20) == 0xf3012002 || cpu->gpr(20) == 0xf3012000))
597	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
598	>
599	>	// Ignore all other faults, if requested
600	>	if (PrefsFindBool("ignoresegv"))
601	>	return SIGSEGV_RETURN_SKIP_INSTRUCTION;
602		}
565	–	#endif
566	–	printf("Caught SIGSEGV at address %p\n", sip->si_addr);
567	–	printf("Native PC: %08x\n", (((ucontext_t *)scp)->uc_mcontext.regs)->nip);
568	–	printf("Current CPU: %s\n", current_cpu == main_cpu ? "main" : "interrupts");
569	–	#if 1
570	–	dump_registers();
603		#else
604	<	printf("Main CPU context\n");
573	<	main_cpu->dump_registers();
574	<	printf("Interrupts CPU context\n");
575	<	interrupt_cpu->dump_registers();
604	>	#error "FIXME: You don't have the capability to skip instruction within signal handlers"
605		#endif
606	+
607	+	printf("SIGSEGV\n");
608	+	printf("  pc %p\n", fault_instruction);
609	+	printf("  ea %p\n", fault_address);
610	+	printf(" cpu %s\n", current_cpu == main_cpu ? "main" : "interrupts");
611	+	dump_registers();
612		current_cpu->dump_log();
613		enter_mon();
614		QuitEmulator();
615	+
616	+	return SIGSEGV_RETURN_FAILURE;
617		}
618
619		void init_emul_ppc(void)
#	Line 591 | Line 628 | void init_emul_ppc(void)
628		interrupt_cpu = new sheepshaver_cpu();
629		#endif
630
631	<	// Install SIGSEGV handler
632	<	sigemptyset(&sigsegv_action.sa_mask);
596	<	sigsegv_action.sa_sigaction = sigsegv_handler;
597	<	sigsegv_action.sa_flags = SA_SIGINFO;
598	<	sigsegv_action.sa_restorer = NULL;
599	<	sigaction(SIGSEGV, &sigsegv_action, NULL);
631	>	// Install the handler for SIGSEGV
632	>	sigsegv_install_handler(sigsegv_handler);
633
634		#if ENABLE_MON
635		// Install "regs" command in cxmon
636		mon_add_command("regs", dump_registers, "regs                     Dump PowerPC registers\n");
637		mon_add_command("log", dump_log, "log                      Dump PowerPC emulation log\n");
638		#endif
639	+
640	+	#if EMUL_TIME_STATS
641	+	emul_start_time = clock();
642	+	#endif
643	+	}
644	+
645	+	/*
646	+	*  Deinitialize emulation
647	+	*/
648	+
649	+	void exit_emul_ppc(void)
650	+	{
651	+	#if EMUL_TIME_STATS
652	+	clock_t emul_end_time = clock();
653	+
654	+	printf("### Statistics for SheepShaver emulation parts\n");
655	+	const clock_t emul_time = emul_end_time - emul_start_time;
656	+	printf("Total emulation time : %.1f sec\n", double(emul_time) / double(CLOCKS_PER_SEC));
657	+	printf("Total interrupt count: %d (%2.1f Hz)\n", interrupt_count,
658	+	(double(interrupt_count) * CLOCKS_PER_SEC) / double(emul_time));
659	+
660	+	#define PRINT_STATS(LABEL, VAR_PREFIX) do {                                                             \
661	+	printf("Total " LABEL " count : %d\n", VAR_PREFIX##_count);             \
662	+	printf("Total " LABEL " time  : %.1f sec (%.1f%%)\n",                   \
663	+	double(VAR_PREFIX##_time) / double(CLOCKS_PER_SEC),          \
664	+	100.0 * double(VAR_PREFIX##_time) / double(emul_time));      \
665	+	} while (0)
666	+
667	+	PRINT_STATS("Execute68k[Trap] execution", exec68k);
668	+	PRINT_STATS("NativeOp execution", native_exec);
669	+	PRINT_STATS("MacOS routine execution", macos_exec);
670	+
671	+	#undef PRINT_STATS
672	+	printf("\n");
673	+	#endif
674	+
675	+	delete main_cpu;
676	+	#if MULTICORE_CPU
677	+	delete interrupt_cpu;
678	+	#endif
679		}
680
681		/*
#	Line 612 | Line 685 | void init_emul_ppc(void)
685		void emul_ppc(uint32 entry)
686		{
687		current_cpu = main_cpu;
688	+	#if DEBUG
689		current_cpu->start_log();
690	+	#endif
691	+	// start emulation loop and enable code translation or caching
692		current_cpu->execute(entry);
693		}
694
#	Line 620 | Line 696 | void emul_ppc(uint32 entry)
696		*  Handle PowerPC interrupt
697		*/
698
699	<	// Atomic operations
700	<	extern int atomic_add(int *var, int v);
701	<	extern int atomic_and(int *var, int v);
702	<	extern int atomic_or(int *var, int v);
703	<
699	>	#if ASYNC_IRQ
700	>	void HandleInterrupt(void)
701	>	{
702	>	main_cpu->handle_interrupt();
703	>	}
704	>	#else
705		void TriggerInterrupt(void)
706		{
707		#if 0
708		WriteMacInt32(0x16a, ReadMacInt32(0x16a) + 1);
709		#else
710	<	SPCFLAGS_SET( SPCFLAG_INT );
710	>	// Trigger interrupt to main cpu only
711	>	if (main_cpu)
712	>	main_cpu->trigger_interrupt();
713		#endif
714		}
715	+	#endif
716
717	<	static void HandleInterrupt(void)
717	>	void sheepshaver_cpu::handle_interrupt(void)
718		{
719		// Do nothing if interrupts are disabled
720	<	if (int32(ReadMacInt32(XLM_IRQ_NEST)) > 0)
720	>	if (*(int32 *)XLM_IRQ_NEST > 0)
721		return;
722
723		// Do nothing if there is no interrupt pending
#	Line 653 | Line 733 | static void HandleInterrupt(void)
733		// 68k emulator active, trigger 68k interrupt level 1
734		assert(current_cpu == main_cpu);
735		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
736	<	main_cpu->set_cr(main_cpu->get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
736	>	set_cr(get_cr() | tswap32(kernel_data->v[0x674 >> 2]));
737		break;
738
739		#if INTERRUPTS_IN_NATIVE_MODE
740		case MODE_NATIVE:
741		// 68k emulator inactive, in nanokernel?
742		assert(current_cpu == main_cpu);
743	<	if (main_cpu->gpr(1) != KernelDataAddr) {
743	>	if (gpr(1) != KernelDataAddr) {
744		// Prepare for 68k interrupt level 1
745		WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
746		WriteMacInt32(tswap32(kernel_data->v[0x658 >> 2]) + 0xdc,
#	Line 671 | Line 751 | static void HandleInterrupt(void)
751		DisableInterrupt();
752		cpu_push(interrupt_cpu);
753		if (ROMType == ROMTYPE_NEWWORLD)
754	<	current_cpu->interrupt(ROM_BASE + 0x312b1c, main_cpu);
754	>	current_cpu->interrupt(ROM_BASE + 0x312b1c);
755		else
756	<	current_cpu->interrupt(ROM_BASE + 0x312a3c, main_cpu);
756	>	current_cpu->interrupt(ROM_BASE + 0x312a3c);
757		cpu_pop();
758		}
759		break;
#	Line 714 | Line 794 | static void HandleInterrupt(void)
794		}
795		}
796
717	–	/*
718	–	*  Execute NATIVE_OP opcode (called by PowerPC emulator)
719	–	*/
720	–
721	–	#define POWERPC_NATIVE_OP_INIT(LR, OP) \
722	–	tswap32(POWERPC_EMUL_OP | ((LR) << 11) | (((uint32)OP) << 6) | 2)
723	–
724	–	// FIXME: Make sure 32-bit relocations are used
725	–	const uint32 NativeOpTable[NATIVE_OP_MAX] = {
726	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_PATCH_NAME_REGISTRY),
727	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_INSTALL_ACCEL),
728	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_VBL),
729	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_DO_DRIVER_IO),
730	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_IRQ),
731	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_INIT),
732	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_TERM),
733	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_OPEN),
734	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_CLOSE),
735	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_WPUT),
736	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_RSRV),
737	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_NOTHING),
738	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_OPEN),
739	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_PRIME_IN),
740	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_PRIME_OUT),
741	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_CONTROL),
742	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_STATUS),
743	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_CLOSE),
744	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_RESOURCE),
745	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_1_RESOURCE),
746	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_IND_RESOURCE),
747	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_1_IND_RESOURCE),
748	–	POWERPC_NATIVE_OP_INIT(1, NATIVE_R_GET_RESOURCE),
749	–	POWERPC_NATIVE_OP_INIT(0, NATIVE_DISABLE_INTERRUPT),
750	–	POWERPC_NATIVE_OP_INIT(0, NATIVE_ENABLE_INTERRUPT),
751	–	};
752	–
797		static void get_resource(void);
798		static void get_1_resource(void);
799		static void get_ind_resource(void);
#	Line 760 | Line 804 | static void r_get_resource(void);
804
805		static void NativeOp(int selector)
806		{
807	+	#if EMUL_TIME_STATS
808	+	native_exec_count++;
809	+	const clock_t native_exec_start = clock();
810	+	#endif
811	+
812		switch (selector) {
813		case NATIVE_PATCH_NAME_REGISTRY:
814		DoPatchNameRegistry();
#	Line 774 | Line 823 | static void NativeOp(int selector)
823		GPR(3) = (int32)(int16)VideoDoDriverIO((void *)GPR(3), (void *)GPR(4),
824		(void *)GPR(5), GPR(6), GPR(7));
825		break;
826	<	case NATIVE_GET_RESOURCE:
827	<	get_resource();
826	>	#ifdef WORDS_BIGENDIAN
827	>	case NATIVE_ETHER_IRQ:
828	>	EtherIRQ();
829		break;
830	<	case NATIVE_GET_1_RESOURCE:
831	<	get_1_resource();
830	>	case NATIVE_ETHER_INIT:
831	>	GPR(3) = InitStreamModule((void *)GPR(3));
832		break;
833	<	case NATIVE_GET_IND_RESOURCE:
834	<	get_ind_resource();
833	>	case NATIVE_ETHER_TERM:
834	>	TerminateStreamModule();
835		break;
836	<	case NATIVE_GET_1_IND_RESOURCE:
837	<	get_1_ind_resource();
836	>	case NATIVE_ETHER_OPEN:
837	>	GPR(3) = ether_open((queue_t *)GPR(3), (void *)GPR(4), GPR(5), GPR(6), (void*)GPR(7));
838	>	break;
839	>	case NATIVE_ETHER_CLOSE:
840	>	GPR(3) = ether_close((queue_t *)GPR(3), GPR(4), (void *)GPR(5));
841		break;
842	<	case NATIVE_R_GET_RESOURCE:
843	<	r_get_resource();
842	>	case NATIVE_ETHER_WPUT:
843	>	GPR(3) = ether_wput((queue_t *)GPR(3), (mblk_t *)GPR(4));
844		break;
845	+	case NATIVE_ETHER_RSRV:
846	+	GPR(3) = ether_rsrv((queue_t *)GPR(3));
847	+	break;
848	+	#else
849	+	case NATIVE_ETHER_INIT:
850	+	// FIXME: needs more complicated thunks
851	+	GPR(3) = false;
852	+	break;
853	+	#endif
854		case NATIVE_SERIAL_NOTHING:
855		case NATIVE_SERIAL_OPEN:
856		case NATIVE_SERIAL_PRIME_IN:
#	Line 809 | Line 871 | static void NativeOp(int selector)
871		GPR(3) = serial_callbacks[selector - NATIVE_SERIAL_NOTHING](GPR(3), GPR(4));
872		break;
873		}
874	+	case NATIVE_GET_RESOURCE:
875	+	case NATIVE_GET_1_RESOURCE:
876	+	case NATIVE_GET_IND_RESOURCE:
877	+	case NATIVE_GET_1_IND_RESOURCE:
878	+	case NATIVE_R_GET_RESOURCE: {
879	+	typedef void (*GetResourceCallback)(void);
880	+	static const GetResourceCallback get_resource_callbacks[] = {
881	+	get_resource,
882	+	get_1_resource,
883	+	get_ind_resource,
884	+	get_1_ind_resource,
885	+	r_get_resource
886	+	};
887	+	get_resource_callbacks[selector - NATIVE_GET_RESOURCE]();
888	+	break;
889	+	}
890		case NATIVE_DISABLE_INTERRUPT:
891		DisableInterrupt();
892		break;
893		case NATIVE_ENABLE_INTERRUPT:
894		EnableInterrupt();
895		break;
896	+	case NATIVE_MAKE_EXECUTABLE:
897	+	MakeExecutable(0, (void *)GPR(4), GPR(5));
898	+	break;
899		default:
900		printf("FATAL: NATIVE_OP called with bogus selector %d\n", selector);
901		QuitEmulator();
902		break;
903		}
904	+
905	+	#if EMUL_TIME_STATS
906	+	native_exec_time += (clock() - native_exec_start);
907	+	#endif
908		}
909
910		/*
#	Line 828 | Line 913 | static void NativeOp(int selector)
913
914		void ExecuteNative(int selector)
915		{
916	<	uint32 tvect[2];
832	<	tvect[0] = tswap32(POWERPC_NATIVE_OP_FUNC(selector));
833	<	tvect[1] = 0; // Fake TVECT
834	<	RoutineDescriptor desc = BUILD_PPC_ROUTINE_DESCRIPTOR(0, tvect);
916	>	SheepRoutineDescriptor desc(0, NativeTVECT(selector));
917		M68kRegisters r;
918	<	Execute68k((uint32)&desc, &r);
918	>	Execute68k(desc.addr(), &r);
919		}
920
921		/*
#	Line 854 | Line 936 | void Execute68k(uint32 pc, M68kRegisters
936
937		void Execute68kTrap(uint16 trap, M68kRegisters *r)
938		{
939	<	uint16 proc[2] = {trap, M68K_RTS};
940	<	Execute68k((uint32)proc, r);
939	>	SheepVar proc_var(4);
940	>	uint32 proc = proc_var.addr();
941	>	WriteMacInt16(proc, trap);
942	>	WriteMacInt16(proc + 2, M68K_RTS);
943	>	Execute68k(proc, r);
944		}
945
946		/*
#	Line 910 | Line 995 | uint32 call_macos7(uint32 tvect, uint32
995		}
996
997		/*
913	–	*  Atomic operations
914	–	*/
915	–
916	–	int atomic_add(int *var, int v)
917	–	{
918	–	int ret = *var;
919	–	*var += v;
920	–	return ret;
921	–	}
922	–
923	–	int atomic_and(int *var, int v)
924	–	{
925	–	int ret = *var;
926	–	*var &= v;
927	–	return ret;
928	–	}
929	–
930	–	int atomic_or(int *var, int v)
931	–	{
932	–	int ret = *var;
933	–	*var |= v;
934	–	return ret;
935	–	}
936	–
937	–	/*
998		*  Resource Manager thunks
999		*/
1000

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