[ViewVC] Diff of: cebix/SheepShaver/src/Unix/main

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.14 by gbeauche, 2003-11-10T16:05:52Z vs.
Revision 1.47 by gbeauche, 2004-07-03T10:39:06Z

#	Line 1 \| Line 1
1		/*
2		* main_unix.cpp - Emulation core, Unix implementation
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 65 \| Line 65
65		* ExecutePPC (or any function that might cause a mode switch). The signal
66		* stack is restored before exiting the SIGUSR2 handler.
67		*
68	+	* There is apparently another problem when processing signals. In
69	+	* fullscreen mode, we get quick updates of the mouse position. This
70	+	* causes an increased number of calls to TriggerInterrupt(). And,
71	+	* since IRQ_NEST is not fully handled atomically, nested calls to
72	+	* ppc_interrupt() may cause stack corruption to eventually crash the
73	+	* emulator.
74	+	*
75	+	* FIXME:
76	+	* The current solution is to allocate another signal stack when
77	+	* processing ppc_interrupt(). However, it may be better to detect
78	+	* the INTFLAG_ADB case and handle it specifically with some extra mutex?
79	+	*
80		* TODO:
81		* check if SIGSEGV handler works for all registers (including FP!)
82		*/
#	Line 109 \| Line 121
121		#include "user_strings.h"
122		#include "vm_alloc.h"
123		#include "sigsegv.h"
124	+	#include "thunks.h"
125
126		#define DEBUG 0
127		#include "debug.h"
128
129
130	+	#ifdef HAVE_DIRENT_H
131	+	#include <dirent.h>
132	+	#endif
133	+
134	+	#ifdef USE_SDL
135	+	#include <SDL.h>
136	+	#endif
137	+
138	+	#ifndef USE_SDL_VIDEO
139		#include <X11/Xlib.h>
140	+	#endif
141
142		#ifdef ENABLE_GTK
143		#include <gtk/gtk.h>
#	Line 131 \| Line 154
154		#endif
155
156
157	+	// Enable emulation of unaligned lmw/stmw?
158	+	#define EMULATE_UNALIGNED_LOADSTORE_MULTIPLE 1
159	+
160		// Enable Execute68k() safety checks?
161		#define SAFE_EXEC_68K 0
162
#	Line 140 \| Line 166
166		// Interrupts in native mode?
167		#define INTERRUPTS_IN_NATIVE_MODE 1
168
169	+	// Number of alternate stacks for signal handlers?
170	+	#define SIG_STACK_COUNT 4
171	+
172
173		// Constants
174		const char ROM_FILE_NAME[] = "ROM";
175		const char ROM_FILE_NAME2[] = "Mac OS ROM";
176
177	<	const uint32 RAM_BASE = 0x20000000; // Base address of RAM
177	>	const uintptr RAM_BASE = 0x20000000; // Base address of RAM
178		const uint32 SIG_STACK_SIZE = 0x10000; // Size of signal stack
179
180
181		#if !EMULATED_PPC
153	–	// Structure in which registers are saved in a signal handler;
154	–	// sigcontext->regs points to it
155	–	// (see arch/ppc/kernel/signal.c)
156	–	typedef struct {
157	–	uint32 u[4];
158	–	} __attribute((aligned(16))) vector128;
159	–	#include <linux/elf.h>
160	–
182		struct sigregs {
183	<	elf_gregset_t gp_regs; // Identical to pt_regs
184	<	double fp_regs[ELF_NFPREG]; // f0..f31 and fpsrc
185	<	//more (uninteresting) stuff following here
183	>	uint32 nip;
184	>	uint32 link;
185	>	uint32 ctr;
186	>	uint32 msr;
187	>	uint32 xer;
188	>	uint32 ccr;
189	>	uint32 gpr[32];
190	>	};
191	>
192	>	#if defined(__linux__)
193	>	#include <sys/ucontext.h>
194	>	#define MACHINE_REGISTERS(scp) ((machine_regs )(((ucontext_t )scp)->uc_mcontext.regs))
195	>
196	>	struct machine_regs : public pt_regs
197	>	{
198	>	u_long & cr() { return pt_regs::ccr; }
199	>	uint32 cr() const { return pt_regs::ccr; }
200	>	uint32 lr() const { return pt_regs::link; }
201	>	uint32 ctr() const { return pt_regs::ctr; }
202	>	uint32 xer() const { return pt_regs::xer; }
203	>	uint32 msr() const { return pt_regs::msr; }
204	>	uint32 dar() const { return pt_regs::dar; }
205	>	u_long & pc() { return pt_regs::nip; }
206	>	uint32 pc() const { return pt_regs::nip; }
207	>	u_long & gpr(int i) { return pt_regs::gpr[i]; }
208	>	uint32 gpr(int i) const { return pt_regs::gpr[i]; }
209	>	};
210	>	#endif
211	>
212	>	#if defined(__APPLE__) && defined(__MACH__)
213	>	#include <sys/signal.h>
214	>	extern "C" int sigaltstack(const struct sigaltstack ss, struct sigaltstack oss);
215	>
216	>	#include <sys/ucontext.h>
217	>	#define MACHINE_REGISTERS(scp) ((machine_regs )(((ucontext_t )scp)->uc_mcontext))
218	>
219	>	struct machine_regs : public mcontext
220	>	{
221	>	uint32 & cr() { return ss.cr; }
222	>	uint32 cr() const { return ss.cr; }
223	>	uint32 lr() const { return ss.lr; }
224	>	uint32 ctr() const { return ss.ctr; }
225	>	uint32 xer() const { return ss.xer; }
226	>	uint32 msr() const { return ss.srr1; }
227	>	uint32 dar() const { return es.dar; }
228	>	uint32 & pc() { return ss.srr0; }
229	>	uint32 pc() const { return ss.srr0; }
230	>	uint32 & gpr(int i) { return (&ss.r0)[i]; }
231	>	uint32 gpr(int i) const { return (&ss.r0)[i]; }
232		};
233		#endif
234
235	+	static void build_sigregs(sigregs srp, machine_regs mrp)
236	+	{
237	+	srp->nip = mrp->pc();
238	+	srp->link = mrp->lr();
239	+	srp->ctr = mrp->ctr();
240	+	srp->msr = mrp->msr();
241	+	srp->xer = mrp->xer();
242	+	srp->ccr = mrp->cr();
243	+	for (int i = 0; i < 32; i++)
244	+	srp->gpr[i] = mrp->gpr(i);
245	+	}
246	+
247	+	static struct sigaltstack sig_stacks[SIG_STACK_COUNT]; // Stacks for signal handlers
248	+	static int sig_stack_id = 0; // Stack slot currently used
249	+
250	+	static inline void sig_stack_acquire(void)
251	+	{
252	+	if (++sig_stack_id == SIG_STACK_COUNT) {
253	+	printf("FATAL: signal stack overflow\n");
254	+	return;
255	+	}
256	+	sigaltstack(&sig_stacks[sig_stack_id], NULL);
257	+	}
258	+
259	+	static inline void sig_stack_release(void)
260	+	{
261	+	if (--sig_stack_id < 0) {
262	+	printf("FATAL: signal stack underflow\n");
263	+	return;
264	+	}
265	+	sigaltstack(&sig_stacks[sig_stack_id], NULL);
266	+	}
267	+	#endif
268	+
269
270		// Global variables (exported)
271		#if !EMULATED_PPC
#	Line 172 \| Line 273 \| *void TOC; // Small data pointer (r13**
273		#endif
274		uint32 RAMBase; // Base address of Mac RAM
275		uint32 RAMSize; // Size of Mac RAM
175	–	uint32 SheepStack1Base; // SheepShaver first alternate stack base
176	–	uint32 SheepStack2Base; // SheepShaver second alternate stack base
177	–	uint32 SheepThunksBase; // SheepShaver thunks base
276		uint32 KernelDataAddr; // Address of Kernel Data
277		uint32 BootGlobsAddr; // Address of BootGlobs structure at top of Mac RAM
278	+	uint32 DRCacheAddr; // Address of DR Cache
279		uint32 PVR; // Theoretical PVR
280		int64 CPUClockSpeed; // Processor clock speed (Hz)
281		int64 BusClockSpeed; // Bus clock speed (Hz)
282	+	int64 TimebaseSpeed; // Timebase clock speed (Hz)
283
284
285		// Global variables
286	+	#ifndef USE_SDL_VIDEO
287		char *x_display_name = NULL; // X11 display name
288		Display *x_display = NULL; // X11 display handle
289	+	#ifdef X11_LOCK_TYPE
290	+	X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock
291	+	#endif
292	+	#endif
293
294		static int zero_fd = 0; // FD of /dev/zero
190	–	static bool sheep_area_mapped = false; // Flag: SheepShaver data area mmap()ed
295		static bool lm_area_mapped = false; // Flag: Low Memory area mmap()ped
296		static int kernel_area = -1; // SHM ID of Kernel Data area
297		static bool rom_area_mapped = false; // Flag: Mac ROM mmap()ped
298		static bool ram_area_mapped = false; // Flag: Mac RAM mmap()ped
299	+	static bool dr_cache_area_mapped = false; // Flag: Mac DR Cache mmap()ped
300	+	static bool dr_emulator_area_mapped = false;// Flag: Mac DR Emulator mmap()ped
301		static KernelData *kernel_data; // Pointer to Kernel Data
302		static EmulatorData *emulator_data;
303
304		static uint8 last_xpram[XPRAM_SIZE]; // Buffer for monitoring XPRAM changes
305
306		static bool nvram_thread_active = false; // Flag: NVRAM watchdog installed
307	+	static volatile bool nvram_thread_cancel; // Flag: Cancel NVRAM thread
308		static pthread_t nvram_thread; // NVRAM watchdog
309		static bool tick_thread_active = false; // Flag: MacOS thread installed
310	+	static volatile bool tick_thread_cancel; // Flag: Cancel 60Hz thread
311		static pthread_t tick_thread; // 60Hz thread
312		static pthread_t emul_thread; // MacOS thread
313
#	Line 207 \| Line 315 \| static bool ready_for_signals = false;
315		static int64 num_segv = 0; // Number of handled SEGV signals
316
317		static struct sigaction sigusr2_action; // Interrupt signal (of emulator thread)
318	<	#if !EMULATED_PPC
318	>	#if EMULATED_PPC
319	>	static uintptr sig_stack = 0; // Stack for PowerPC interrupt routine
320	>	#else
321		static struct sigaction sigsegv_action; // Data access exception signal (of emulator thread)
322		static struct sigaction sigill_action; // Illegal instruction signal (of emulator thread)
213	–	static void *sig_stack = NULL; // Stack for signal handlers
214	–	static void *extra_stack = NULL; // Stack for SIGSEGV inside interrupt handler
323		static bool emul_thread_fatal = false; // Flag: MacOS thread crashed, tick thread shall dump debug output
324		static sigregs sigsegv_regs; // Register dump when crashed
325	+	static const char *crash_reason = NULL; // Reason of the crash (SIGSEGV, SIGBUS, SIGILL)
326		#endif
327
328	+	uint32 SheepMem::page_size; // Size of a native page
329	+	uintptr SheepMem::zero_page = 0; // Address of ro page filled in with zeros
330	+	uintptr SheepMem::base = 0x60000000; // Address of SheepShaver data
331	+	uintptr SheepMem::top = 0; // Top of SheepShaver data (stack like storage)
332	+
333
334		// Prototypes
335		static void Quit(void);
#	Line 223 \| Line 337 \| *static void emul_func(void arg);*
337		static void nvram_func(void arg);
338		static void tick_func(void arg);
339		#if EMULATED_PPC
226	–	static void sigusr2_handler(int sig);
340		extern void emul_ppc(uint32 start);
341		extern void init_emul_ppc(void);
342		extern void exit_emul_ppc(void);
343	+	sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
344		#else
345	<	static void sigusr2_handler(int sig, sigcontext_struct *sc);
346	<	static void sigsegv_handler(int sig, sigcontext_struct *sc);
347	<	static void sigill_handler(int sig, sigcontext_struct *sc);
345	>	static void sigusr2_handler(int sig, siginfo_t sip, void scp);
346	>	static void sigsegv_handler(int sig, siginfo_t sip, void scp);
347	>	static void sigill_handler(int sig, siginfo_t sip, void scp);
348		#endif
349
350
#	Line 252 \| Line 366 \| extern void paranoia_check(void);
366
367		#if EMULATED_PPC
368		/*
369	+	* Return signal stack base
370	+	*/
371	+
372	+	uintptr SignalStackBase(void)
373	+	{
374	+	return sig_stack + SIG_STACK_SIZE;
375	+	}
376	+
377	+
378	+	/*
379		* Atomic operations
380		*/
381
#	Line 342 \| Line 466 \| int main(int argc, char argv)**
466		for (int i=1; i<argc; i++) {
467		if (strcmp(argv[i], "--help") == 0) {
468		usage(argv[0]);
469	+	#ifndef USE_SDL_VIDEO
470		} else if (strcmp(argv[i], "--display") == 0) {
471		i++;
472		if (i < argc)
473		x_display_name = strdup(argv[i]);
474	+	#endif
475		} else if (argv[i][0] == '-') {
476		fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
477		usage(argv[0]);
478		}
479		}
480
481	+	#ifdef USE_SDL
482	+	// Initialize SDL system
483	+	int sdl_flags = 0;
484	+	#ifdef USE_SDL_VIDEO
485	+	sdl_flags \|= SDL_INIT_VIDEO;
486	+	#endif
487	+	assert(sdl_flags != 0);
488	+	if (SDL_Init(sdl_flags) == -1) {
489	+	char str[256];
490	+	sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError());
491	+	ErrorAlert(str);
492	+	goto quit;
493	+	}
494	+	atexit(SDL_Quit);
495	+	#endif
496	+
497	+	#ifndef USE_SDL_VIDEO
498		// Open display
499		x_display = XOpenDisplay(x_display_name);
500		if (x_display == NULL) {
#	Line 365 \| Line 508 \| int main(int argc, char argv)**
508		// Fork out, so we can return from fullscreen mode when things get ugly
509		XF86DGAForkApp(DefaultScreen(x_display));
510		#endif
511	+	#endif
512
513		#ifdef ENABLE_MON
514		// Initialize mon
515		mon_init();
516		#endif
517
518	+	#if !EMULATED_PPC
519	+	// Create and install stacks for signal handlers
520	+	for (int i = 0; i < SIG_STACK_COUNT; i++) {
521	+	void *sig_stack = malloc(SIG_STACK_SIZE);
522	+	D(bug("Signal stack %d at %p\n", i, sig_stack));
523	+	if (sig_stack == NULL) {
524	+	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
525	+	goto quit;
526	+	}
527	+	sig_stacks[i].ss_sp = sig_stack;
528	+	sig_stacks[i].ss_flags = 0;
529	+	sig_stacks[i].ss_size = SIG_STACK_SIZE;
530	+	}
531	+	sig_stack_id = 0;
532	+	if (sigaltstack(&sig_stacks[0], NULL) < 0) {
533	+	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
534	+	ErrorAlert(str);
535	+	goto quit;
536	+	}
537	+	#endif
538	+
539	+	#if !EMULATED_PPC
540	+	// Install SIGSEGV and SIGBUS handlers
541	+	sigemptyset(&sigsegv_action.sa_mask); // Block interrupts during SEGV handling
542	+	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
543	+	sigsegv_action.sa_sigaction = sigsegv_handler;
544	+	sigsegv_action.sa_flags = SA_ONSTACK \| SA_SIGINFO;
545	+	#ifdef HAVE_SIGNAL_SA_RESTORER
546	+	sigsegv_action.sa_restorer = NULL;
547	+	#endif
548	+	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
549	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
550	+	ErrorAlert(str);
551	+	goto quit;
552	+	}
553	+	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
554	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
555	+	ErrorAlert(str);
556	+	goto quit;
557	+	}
558	+	#else
559	+	// Install SIGSEGV handler for CPU emulator
560	+	if (!sigsegv_install_handler(sigsegv_handler)) {
561	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
562	+	ErrorAlert(str);
563	+	goto quit;
564	+	}
565	+	#endif
566	+
567	+	// Initialize VM system
568	+	vm_init();
569	+
570		// Get system info
571		PVR = 0x00040000; // Default: 604
572		CPUClockSpeed = 100000000; // Default: 100MHz
573		BusClockSpeed = 100000000; // Default: 100MHz
574	<	#if !EMULATED_PPC
574	>	TimebaseSpeed = 25000000; // Default: 25MHz
575	>	#if EMULATED_PPC
576	>	PVR = 0x000c0000; // Default: 7400 (with AltiVec)
577	>	#elif defined(__APPLE__) && defined(__MACH__)
578	>	proc_file = popen("ioreg -c IOPlatformDevice", "r");
579	>	if (proc_file) {
580	>	char line[256];
581	>	bool powerpc_node = false;
582	>	while (fgets(line, sizeof(line) - 1, proc_file)) {
583	>	// Read line
584	>	int len = strlen(line);
585	>	if (len == 0)
586	>	continue;
587	>	line[len - 1] = 0;
588	>
589	>	// Parse line
590	>	if (strstr(line, "o PowerPC,"))
591	>	powerpc_node = true;
592	>	else if (powerpc_node) {
593	>	uint32 value;
594	>	char head[256];
595	>	if (sscanf(line, "%[ \|]\"cpu-version\" = <%x>", head, &value) == 2)
596	>	PVR = value;
597	>	else if (sscanf(line, "%[ \|]\"clock-frequency\" = <%x>", head, &value) == 2)
598	>	CPUClockSpeed = value;
599	>	else if (sscanf(line, "%[ \|]\"bus-frequency\" = <%x>", head, &value) == 2)
600	>	BusClockSpeed = value;
601	>	else if (strchr(line, '}'))
602	>	powerpc_node = false;
603	>	}
604	>	}
605	>	fclose(proc_file);
606	>	} else {
607	>	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
608	>	WarningAlert(str);
609	>	}
610	>	#else
611		proc_file = fopen("/proc/cpuinfo", "r");
612		if (proc_file) {
613		char line[256];
#	Line 389 \| Line 621 \| int main(int argc, char argv)**
621		// Parse line
622		int i;
623		char value[256];
624	<	if (sscanf(line, "cpu : %s", value) == 1) {
624	>	if (sscanf(line, "cpu : %[0-9A-Za-a]", value) == 1) {
625		if (strcmp(value, "601") == 0)
626		PVR = 0x00010000;
627		else if (strcmp(value, "603") == 0)
#	Line 406 \| Line 638 \| int main(int argc, char argv)**
638		PVR = 0x000a0000;
639		else if (strcmp(value, "750") == 0)
640		PVR = 0x00080000;
641	+	else if (strcmp(value, "750FX") == 0)
642	+	PVR = 0x70000000;
643		else if (strcmp(value, "821") == 0)
644		PVR = 0x00320000;
645		else if (strcmp(value, "860") == 0)
646		PVR = 0x00500000;
647	+	else if (strcmp(value, "7400") == 0)
648	+	PVR = 0x000c0000;
649	+	else if (strcmp(value, "7410") == 0)
650	+	PVR = 0x800c0000;
651	+	else if (strcmp(value, "7450") == 0)
652	+	PVR = 0x80000000;
653	+	else if (strcmp(value, "7455") == 0)
654	+	PVR = 0x80010000;
655	+	else if (strcmp(value, "7457") == 0)
656	+	PVR = 0x80020000;
657	+	else if (strcmp(value, "PPC970") == 0)
658	+	PVR = 0x00390000;
659		else
660		printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
661		}
#	Line 421 \| Line 667 \| int main(int argc, char argv)**
667		sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
668		WarningAlert(str);
669		}
670	+
671	+	// Get actual bus frequency
672	+	proc_file = fopen("/proc/device-tree/clock-frequency", "r");
673	+	if (proc_file) {
674	+	union { uint8 b[4]; uint32 l; } value;
675	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
676	+	BusClockSpeed = value.l;
677	+	fclose(proc_file);
678	+	}
679	+
680	+	// Get actual timebase frequency
681	+	TimebaseSpeed = BusClockSpeed / 4;
682	+	DIR *cpus_dir;
683	+	if ((cpus_dir = opendir("/proc/device-tree/cpus")) != NULL) {
684	+	struct dirent *cpu_entry;
685	+	while ((cpu_entry = readdir(cpus_dir)) != NULL) {
686	+	if (strstr(cpu_entry->d_name, "PowerPC,") == cpu_entry->d_name) {
687	+	char timebase_freq_node[256];
688	+	sprintf(timebase_freq_node, "/proc/device-tree/cpus/%s/timebase-frequency", cpu_entry->d_name);
689	+	proc_file = fopen(timebase_freq_node, "r");
690	+	if (proc_file) {
691	+	union { uint8 b[4]; uint32 l; } value;
692	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
693	+	TimebaseSpeed = value.l;
694	+	fclose(proc_file);
695	+	}
696	+	}
697	+	}
698	+	closedir(cpus_dir);
699	+	}
700		#endif
701		D(bug("PVR: %08x (assumed)\n", PVR));
702
#	Line 445 \| Line 721 \| int main(int argc, char argv)**
721		goto quit;
722		}
723
724	+	#ifndef PAGEZERO_HACK
725		// Create Low Memory area (0x0000..0x3000)
726		if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
727		sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
#	Line 452 \| Line 729 \| int main(int argc, char argv)**
729		goto quit;
730		}
731		lm_area_mapped = true;
732	+	#endif
733
734		// Create areas for Kernel Data
735		kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
#	Line 470 \| Line 748 \| int main(int argc, char argv)**
748		ErrorAlert(str);
749		goto quit;
750		}
751	<	kernel_data = (KernelData *)0x68ffe000;
751	>	kernel_data = (KernelData *)KERNEL_DATA_BASE;
752		emulator_data = &kernel_data->ed;
753	<	KernelDataAddr = (uint32)kernel_data;
753	>	KernelDataAddr = KERNEL_DATA_BASE;
754		D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
755
756	+	// Create area for DR Cache
757	+	if (vm_acquire_fixed((void *)DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) {
758	+	sprintf(str, GetString(STR_DR_EMULATOR_MMAP_ERR), strerror(errno));
759	+	ErrorAlert(str);
760	+	goto quit;
761	+	}
762	+	dr_emulator_area_mapped = true;
763	+	if (vm_acquire_fixed((void *)DR_CACHE_BASE, DR_CACHE_SIZE) < 0) {
764	+	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
765	+	ErrorAlert(str);
766	+	goto quit;
767	+	}
768	+	dr_cache_area_mapped = true;
769	+	#if !EMULATED_PPC
770	+	if (vm_protect((char *)DR_CACHE_BASE, DR_CACHE_SIZE, VM_PAGE_READ \| VM_PAGE_WRITE \| VM_PAGE_EXECUTE) < 0) {
771	+	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
772	+	ErrorAlert(str);
773	+	goto quit;
774	+	}
775	+	#endif
776	+	DRCacheAddr = DR_CACHE_BASE;
777	+	D(bug("DR Cache at %p\n", DRCacheAddr));
778	+
779		// Create area for SheepShaver data
780	<	if (vm_acquire_fixed((char *)SHEEP_BASE, SHEEP_SIZE) < 0) {
780	>	if (!SheepMem::Init()) {
781		sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
782		ErrorAlert(str);
783		goto quit;
784		}
484	–	SheepStack1Base = SHEEP_BASE + 0x10000;
485	–	SheepStack2Base = SheepStack1Base + 0x10000;
486	–	SheepThunksBase = SheepStack2Base + 0x1000;
487	–	sheep_area_mapped = true;
785
786		// Create area for Mac ROM
787		if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
#	Line 492 \| Line 789 \| int main(int argc, char argv)**
789		ErrorAlert(str);
790		goto quit;
791		}
792	<	#if !EMULATED_PPC \|\| defined(__powerpc__)
792	>	#if !EMULATED_PPC
793		if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ \| VM_PAGE_WRITE \| VM_PAGE_EXECUTE) < 0) {
794		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
795		ErrorAlert(str);
#	Line 562 \| Line 859 \| int main(int argc, char argv)**
859		// Load NVRAM
860		XPRAMInit();
861
862	+	// Load XPRAM default values if signature not found
863	+	if (XPRAM[0x130c] != 0x4e \|\| XPRAM[0x130d] != 0x75
864	+	\|\| XPRAM[0x130e] != 0x4d \|\| XPRAM[0x130f] != 0x63) {
865	+	D(bug("Loading XPRAM default values\n"));
866	+	memset(XPRAM + 0x1300, 0, 0x100);
867	+	XPRAM[0x130c] = 0x4e; // "NuMc" signature
868	+	XPRAM[0x130d] = 0x75;
869	+	XPRAM[0x130e] = 0x4d;
870	+	XPRAM[0x130f] = 0x63;
871	+	XPRAM[0x1301] = 0x80; // InternalWaitFlags = DynWait (don't wait for SCSI devices upon bootup)
872	+	XPRAM[0x1310] = 0xa8; // Standard PRAM values
873	+	XPRAM[0x1311] = 0x00;
874	+	XPRAM[0x1312] = 0x00;
875	+	XPRAM[0x1313] = 0x22;
876	+	XPRAM[0x1314] = 0xcc;
877	+	XPRAM[0x1315] = 0x0a;
878	+	XPRAM[0x1316] = 0xcc;
879	+	XPRAM[0x1317] = 0x0a;
880	+	XPRAM[0x131c] = 0x00;
881	+	XPRAM[0x131d] = 0x02;
882	+	XPRAM[0x131e] = 0x63;
883	+	XPRAM[0x131f] = 0x00;
884	+	XPRAM[0x1308] = 0x13;
885	+	XPRAM[0x1309] = 0x88;
886	+	XPRAM[0x130a] = 0x00;
887	+	XPRAM[0x130b] = 0xcc;
888	+	XPRAM[0x1376] = 0x00; // OSDefault = MacOS
889	+	XPRAM[0x1377] = 0x01;
890	+	}
891	+
892		// Set boot volume
893		i16 = PrefsFindInt32("bootdrive");
894		XPRAM[0x1378] = i16 >> 8;
#	Line 579 \| Line 906 \| int main(int argc, char argv)**
906		boot_globs[1] = htonl(RAMSize);
907		boot_globs[2] = htonl((uint32)-1); // End of bank table
908
909	+	// Init thunks
910	+	if (!ThunksInit())
911	+	goto quit;
912	+
913		// Init drivers
914		SonyInit();
915		DiskInit();
#	Line 588 \| Line 919 \| int main(int argc, char argv)**
919		// Init external file system
920		ExtFSInit();
921
922	+	// Init ADB
923	+	ADBInit();
924	+
925		// Init audio
926		AudioInit();
927
#	Line 622 \| Line 956 \| int main(int argc, char argv)**
956		// Initialize Kernel Data
957		memset(kernel_data, 0, sizeof(KernelData));
958		if (ROMType == ROMTYPE_NEWWORLD) {
959	<	static uint32 of_dev_tree[4] = {0, 0, 0, 0};
960	<	static uint8 vector_lookup_tbl[128];
961	<	static uint8 vector_mask_tbl[64];
959	>	uintptr of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32));
960	>	memset((void )of_dev_tree, 0, 4 sizeof(uint32));
961	>	uintptr vector_lookup_tbl = SheepMem::Reserve(128);
962	>	uintptr vector_mask_tbl = SheepMem::Reserve(64);
963		memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
964	<	memset(vector_lookup_tbl, 0, 128);
965	<	memset(vector_mask_tbl, 0, 64);
964	>	memset((void *)vector_lookup_tbl, 0, 128);
965	>	memset((void *)vector_mask_tbl, 0, 64);
966		kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
967	<	kernel_data->v[0xb84 >> 2] = htonl((uint32)of_dev_tree); // OF device tree base
968	<	kernel_data->v[0xb90 >> 2] = htonl((uint32)vector_lookup_tbl);
969	<	kernel_data->v[0xb94 >> 2] = htonl((uint32)vector_mask_tbl);
967	>	kernel_data->v[0xb84 >> 2] = htonl(of_dev_tree); // OF device tree base
968	>	kernel_data->v[0xb90 >> 2] = htonl(vector_lookup_tbl);
969	>	kernel_data->v[0xb94 >> 2] = htonl(vector_mask_tbl);
970		kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE); // OpenPIC base
971		kernel_data->v[0xbb0 >> 2] = htonl(0); // ADB base
972		kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
#	Line 644 \| Line 979 \| int main(int argc, char argv)**
979		kernel_data->v[0xc50 >> 2] = htonl(RAMBase);
980		kernel_data->v[0xc54 >> 2] = htonl(RAMSize);
981		kernel_data->v[0xf60 >> 2] = htonl(PVR);
982	<	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed);
983	<	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed);
984	<	kernel_data->v[0xf6c >> 2] = htonl(CPUClockSpeed);
982	>	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed); // clock-frequency
983	>	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed); // bus-frequency
984	>	kernel_data->v[0xf6c >> 2] = htonl(TimebaseSpeed); // timebase-frequency
985		} else {
986		kernel_data->v[0xc80 >> 2] = htonl(RAMSize);
987		kernel_data->v[0xc84 >> 2] = htonl(RAMSize);
#	Line 658 \| Line 993 \| int main(int argc, char argv)**
993		kernel_data->v[0xcb0 >> 2] = htonl(RAMBase);
994		kernel_data->v[0xcb4 >> 2] = htonl(RAMSize);
995		kernel_data->v[0xf80 >> 2] = htonl(PVR);
996	<	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed);
997	<	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed);
998	<	kernel_data->v[0xf8c >> 2] = htonl(CPUClockSpeed);
996	>	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed); // clock-frequency
997	>	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed); // bus-frequency
998	>	kernel_data->v[0xf8c >> 2] = htonl(TimebaseSpeed); // timebase-frequency
999		}
1000
1001		// Initialize extra low memory
1002		D(bug("Initializing Low Memory...\n"));
1003		memset(NULL, 0, 0x3000);
1004		WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h')); // Signature to detect SheepShaver
1005	<	WriteMacInt32(XLM_KERNEL_DATA, (uint32)kernel_data); // For trap replacement routines
1005	>	WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr); // For trap replacement routines
1006		WriteMacInt32(XLM_PVR, PVR); // Theoretical PVR
1007		WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed); // For DriverServicesLib patch
1008		WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN); // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
1009	<	#if EMULATED_PPC
1010	<	WriteMacInt32(XLM_ETHER_INIT, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_INIT));
1011	<	WriteMacInt32(XLM_ETHER_TERM, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_TERM));
677	<	WriteMacInt32(XLM_ETHER_OPEN, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_OPEN));
678	<	WriteMacInt32(XLM_ETHER_CLOSE, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_CLOSE));
679	<	WriteMacInt32(XLM_ETHER_WPUT, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_WPUT));
680	<	WriteMacInt32(XLM_ETHER_RSRV, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_RSRV));
681	<	WriteMacInt32(XLM_VIDEO_DOIO, POWERPC_NATIVE_OP_FUNC(NATIVE_VIDEO_DO_DRIVER_IO));
682	<	#else
683	<	WriteMacInt32(XLM_TOC, (uint32)TOC); // TOC pointer of emulator
684	<	WriteMacInt32(XLM_ETHER_INIT, (uint32)InitStreamModule); // DLPI ethernet driver functions
685	<	WriteMacInt32(XLM_ETHER_TERM, (uint32)TerminateStreamModule);
686	<	WriteMacInt32(XLM_ETHER_OPEN, (uint32)ether_open);
687	<	WriteMacInt32(XLM_ETHER_CLOSE, (uint32)ether_close);
688	<	WriteMacInt32(XLM_ETHER_WPUT, (uint32)ether_wput);
689	<	WriteMacInt32(XLM_ETHER_RSRV, (uint32)ether_rsrv);
690	<	WriteMacInt32(XLM_VIDEO_DOIO, (uint32)VideoDoDriverIO);
1009	>	WriteMacInt32(XLM_ZERO_PAGE, SheepMem::ZeroPage()); // Pointer to read-only page with all bits set to 0
1010	>	#if !EMULATED_PPC
1011	>	WriteMacInt32(XLM_TOC, (uint32)TOC); // TOC pointer of emulator
1012		#endif
1013	+	WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT)); // DLPI ethernet driver functions
1014	+	WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM));
1015	+	WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN));
1016	+	WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE));
1017	+	WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT));
1018	+	WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV));
1019	+	WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO));
1020		D(bug("Low Memory initialized\n"));
1021
1022		// Start 60Hz thread
1023	+	tick_thread_cancel = false;
1024		tick_thread_active = (pthread_create(&tick_thread, NULL, tick_func, NULL) == 0);
1025		D(bug("Tick thread installed (%ld)\n", tick_thread));
1026
1027		// Start NVRAM watchdog thread
1028		memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1029	+	nvram_thread_cancel = false;
1030		nvram_thread_active = (pthread_create(&nvram_thread, NULL, nvram_func, NULL) == 0);
1031		D(bug("NVRAM thread installed (%ld)\n", nvram_thread));
1032
1033		#if !EMULATED_PPC
704	–	// Create and install stacks for signal handlers
705	–	sig_stack = malloc(SIG_STACK_SIZE);
706	–	D(bug("Signal stack at %p\n", sig_stack));
707	–	if (sig_stack == NULL) {
708	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
709	–	goto quit;
710	–	}
711	–	extra_stack = malloc(SIG_STACK_SIZE);
712	–	D(bug("Extra stack at %p\n", extra_stack));
713	–	if (extra_stack == NULL) {
714	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
715	–	goto quit;
716	–	}
717	–	struct sigaltstack new_stack;
718	–	new_stack.ss_sp = sig_stack;
719	–	new_stack.ss_flags = 0;
720	–	new_stack.ss_size = SIG_STACK_SIZE;
721	–	if (sigaltstack(&new_stack, NULL) < 0) {
722	–	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
723	–	ErrorAlert(str);
724	–	goto quit;
725	–	}
726	–	#endif
727	–
728	–	#if !EMULATED_PPC
729	–	// Install SIGSEGV handler
730	–	sigemptyset(&sigsegv_action.sa_mask); // Block interrupts during SEGV handling
731	–	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
732	–	sigsegv_action.sa_handler = (__sighandler_t)sigsegv_handler;
733	–	sigsegv_action.sa_flags = SA_ONSTACK;
734	–	sigsegv_action.sa_restorer = NULL;
735	–	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
736	–	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
737	–	ErrorAlert(str);
738	–	goto quit;
739	–	}
740	–
1034		// Install SIGILL handler
1035		sigemptyset(&sigill_action.sa_mask); // Block interrupts during ILL handling
1036		sigaddset(&sigill_action.sa_mask, SIGUSR2);
1037	<	sigill_action.sa_handler = (__sighandler_t)sigill_handler;
1038	<	sigill_action.sa_flags = SA_ONSTACK;
1037	>	sigill_action.sa_sigaction = sigill_handler;
1038	>	sigill_action.sa_flags = SA_ONSTACK \| SA_SIGINFO;
1039	>	#ifdef HAVE_SIGNAL_SA_RESTORER
1040		sigill_action.sa_restorer = NULL;
1041	+	#endif
1042		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
1043		sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
1044		ErrorAlert(str);
#	Line 751 \| Line 1046 \| int main(int argc, char argv)**
1046		}
1047		#endif
1048
1049	+	#if !EMULATED_PPC
1050		// Install interrupt signal handler
1051		sigemptyset(&sigusr2_action.sa_mask);
1052	<	sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
1053	<	sigusr2_action.sa_flags = 0;
1054	<	#if !EMULATED_PPC
759	<	sigusr2_action.sa_flags = SA_ONSTACK \| SA_RESTART;
760	<	#endif
1052	>	sigusr2_action.sa_sigaction = sigusr2_handler;
1053	>	sigusr2_action.sa_flags = SA_ONSTACK \| SA_RESTART \| SA_SIGINFO;
1054	>	#ifdef HAVE_SIGNAL_SA_RESTORER
1055		sigusr2_action.sa_restorer = NULL;
1056	+	#endif
1057		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
1058		sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
1059		ErrorAlert(str);
1060		goto quit;
1061		}
1062	+	#endif
1063
1064		// Get my thread ID and execute MacOS thread function
1065		emul_thread = pthread_self();
#	Line 789 \| Line 1085 \| static void Quit(void)
1085
1086		// Stop 60Hz thread
1087		if (tick_thread_active) {
1088	+	tick_thread_cancel = true;
1089		pthread_cancel(tick_thread);
1090		pthread_join(tick_thread, NULL);
1091		}
1092
1093		// Stop NVRAM watchdog thread
1094		if (nvram_thread_active) {
1095	+	nvram_thread_cancel = true;
1096		pthread_cancel(nvram_thread);
1097		pthread_join(nvram_thread, NULL);
1098		}
1099
1100		#if !EMULATED_PPC
1101	<	// Uninstall SIGSEGV handler
1101	>	// Uninstall SIGSEGV and SIGBUS handlers
1102		sigemptyset(&sigsegv_action.sa_mask);
1103		sigsegv_action.sa_handler = SIG_DFL;
1104		sigsegv_action.sa_flags = 0;
1105		sigaction(SIGSEGV, &sigsegv_action, NULL);
1106	+	sigaction(SIGBUS, &sigsegv_action, NULL);
1107
1108		// Uninstall SIGILL handler
1109		sigemptyset(&sigill_action.sa_mask);
1110		sigill_action.sa_handler = SIG_DFL;
1111		sigill_action.sa_flags = 0;
1112		sigaction(SIGILL, &sigill_action, NULL);
1113	+
1114	+	// Delete stacks for signal handlers
1115	+	for (int i = 0; i < SIG_STACK_COUNT; i++) {
1116	+	void *sig_stack = sig_stacks[i].ss_sp;
1117	+	if (sig_stack)
1118	+	free(sig_stack);
1119	+	}
1120		#endif
1121
1122		// Save NVRAM
#	Line 831 \| Line 1137 \| static void Quit(void)
1137		// Exit audio
1138		AudioExit();
1139
1140	+	// Exit ADB
1141	+	ADBExit();
1142	+
1143		// Exit video
1144		VideoExit();
1145
#	Line 843 \| Line 1152 \| static void Quit(void)
1152		DiskExit();
1153		SonyExit();
1154
1155	+	// Delete thunks
1156	+	ThunksExit();
1157	+
1158	+	// Delete SheepShaver globals
1159	+	SheepMem::Exit();
1160	+
1161		// Delete RAM area
1162		if (ram_area_mapped)
1163		vm_release((char *)RAM_BASE, RAMSize);
#	Line 851 \| Line 1166 \| static void Quit(void)
1166		if (rom_area_mapped)
1167		vm_release((char *)ROM_BASE, ROM_AREA_SIZE);
1168
1169	+	// Delete DR cache areas
1170	+	if (dr_emulator_area_mapped)
1171	+	vm_release((void *)DR_EMULATOR_BASE, DR_EMULATOR_SIZE);
1172	+	if (dr_cache_area_mapped)
1173	+	vm_release((void *)DR_CACHE_BASE, DR_CACHE_SIZE);
1174	+
1175		// Delete Kernel Data area
1176		if (kernel_area >= 0) {
1177		shmdt((void *)KERNEL_DATA_BASE);
#	Line 878 \| Line 1199 \| static void Quit(void)
1199		#endif
1200
1201		// Close X11 server connection
1202	+	#ifndef USE_SDL_VIDEO
1203		if (x_display)
1204		XCloseDisplay(x_display);
1205	+	#endif
1206
1207		exit(0);
1208		}
#	Line 954 \| Line 1277 \| void Execute68kTrap(uint16 trap, M68kReg
1277		uint16 proc[2] = {trap, M68K_RTS};
1278		Execute68k((uint32)proc, r);
1279		}
957	–
958	–
959	–	/*
960	–	* Execute PPC code from EMUL_OP routine (real mode switch)
961	–	*/
962	–
963	–	void ExecutePPC(void (*func)())
964	–	{
965	–	uint32 tvect[2] = {(uint32)func, 0}; // Fake TVECT
966	–	RoutineDescriptor desc = BUILD_PPC_ROUTINE_DESCRIPTOR(0, tvect);
967	–	M68kRegisters r;
968	–	Execute68k((uint32)&desc, &r);
969	–	}
1280		#endif
1281
1282
#	Line 1045 \| Line 1355 \| *void MakeExecutable(int dummy, void sta**
1355
1356		void PatchAfterStartup(void)
1357		{
1048	–	#if EMULATED_PPC
1358		ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1050	–	#else
1051	–	ExecutePPC(VideoInstallAccel);
1052	–	#endif
1359		InstallExtFS();
1360		}
1361
#	Line 1058 \| Line 1364 \| void PatchAfterStartup(void)
1364		* NVRAM watchdog thread (saves NVRAM every minute)
1365		*/
1366
1367	<	static void nvram_func(void arg)
1367	>	static void nvram_watchdog(void)
1368		{
1369	<	struct timespec req = {60, 0}; // 1 minute
1369	>	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1370	>	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1371	>	SaveXPRAM();
1372	>	}
1373	>	}
1374
1375	<	for (;;) {
1376	<	pthread_testcancel();
1377	<	nanosleep(&req, NULL);
1378	<	pthread_testcancel();
1379	<	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1380	<	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1071	<	SaveXPRAM();
1072	<	}
1375	>	static void nvram_func(void arg)
1376	>	{
1377	>	while (!nvram_thread_cancel) {
1378	>	for (int i=0; i<60 && !nvram_thread_cancel; i++)
1379	>	Delay_usec(999999); // Only wait 1 second so we quit promptly when nvram_thread_cancel becomes true
1380	>	nvram_watchdog();
1381		}
1382		return NULL;
1383		}
#	Line 1082 \| Line 1390 \| *static void nvram_func(void arg)*
1390		static void tick_func(void arg)
1391		{
1392		int tick_counter = 0;
1393	<	struct timespec req = {0, 16625000};
1393	>	uint64 start = GetTicks_usec();
1394	>	int64 ticks = 0;
1395	>	uint64 next = GetTicks_usec();
1396
1397	<	for (;;) {
1397	>	while (!tick_thread_cancel) {
1398
1399		// Wait
1400	<	nanosleep(&req, NULL);
1400	>	next += 16625;
1401	>	int64 delay = next - GetTicks_usec();
1402	>	if (delay > 0)
1403	>	Delay_usec(delay);
1404	>	else if (delay < -16625)
1405	>	next = GetTicks_usec();
1406	>	ticks++;
1407
1408		#if !EMULATED_PPC
1409		// Did we crash?
1410		if (emul_thread_fatal) {
1411
1412		// Yes, dump registers
1413	<	pt_regs r = (pt_regs )&sigsegv_regs;
1413	>	sigregs *r = &sigsegv_regs;
1414		char str[256];
1415	<	sprintf(str, "SIGSEGV\n"
1415	>	if (crash_reason == NULL)
1416	>	crash_reason = "SIGSEGV";
1417	>	sprintf(str, "%s\n"
1418		" pc %08lx lr %08lx ctr %08lx msr %08lx\n"
1419		" xer %08lx cr %08lx \n"
1420		" r0 %08lx r1 %08lx r2 %08lx r3 %08lx\n"
#	Line 1107 \| Line 1425 \| *static void tick_func(void arg)*
1425		" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n"
1426		" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n"
1427		" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n",
1428	+	crash_reason,
1429		r->nip, r->link, r->ctr, r->msr,
1430		r->xer, r->ccr,
1431		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1142 \| Line 1461 \| *static void tick_func(void arg)*
1461		TriggerInterrupt();
1462		}
1463		}
1464	+
1465	+	uint64 end = GetTicks_usec();
1466	+	D(bug("%Ld ticks in %Ld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
1467		return NULL;
1468		}
1469
#	Line 1262 \| Line 1584 \| *void B2_delete_mutex(B2_mutex mutex)**
1584		* Trigger signal USR2 from another thread
1585		*/
1586
1587	<	#if !EMULATED_PPC \|\| ASYNC_IRQ
1587	>	#if !EMULATED_PPC
1588		void TriggerInterrupt(void)
1589		{
1590		if (ready_for_signals)
#	Line 1294 \| Line 1616 \| void ClearInterruptFlag(uint32 flag)
1616
1617		void DisableInterrupt(void)
1618		{
1619	+	#if EMULATED_PPC
1620	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) + 1);
1621	+	#else
1622		atomic_add((int *)XLM_IRQ_NEST, 1);
1623	+	#endif
1624		}
1625
1626
#	Line 1304 \| Line 1630 \| void DisableInterrupt(void)
1630
1631		void EnableInterrupt(void)
1632		{
1633	+	#if EMULATED_PPC
1634	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) - 1);
1635	+	#else
1636		atomic_add((int *)XLM_IRQ_NEST, -1);
1637	+	#endif
1638		}
1639
1640
#	Line 1312 \| Line 1642 \| void EnableInterrupt(void)
1642		* USR2 handler
1643		*/
1644
1645	<	#if EMULATED_PPC
1646	<	static void sigusr2_handler(int sig)
1645	>	#if !EMULATED_PPC
1646	>	static void sigusr2_handler(int sig, siginfo_t sip, void scp)
1647		{
1648	<	#if ASYNC_IRQ
1649	<	extern void HandleInterrupt(void);
1650	<	HandleInterrupt();
1648	>	machine_regs *r = MACHINE_REGISTERS(scp);
1649	>
1650	>	#ifdef USE_SDL_VIDEO
1651	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1652	>	SDL_PumpEvents();
1653		#endif
1322	–	}
1323	–	#else
1324	–	static void sigusr2_handler(int sig, sigcontext_struct *sc)
1325	–	{
1326	–	pt_regs *r = sc->regs;
1654
1655		// Do nothing if interrupts are disabled
1656		if ((int32 )XLM_IRQ_NEST > 0)
#	Line 1337 \| Line 1664 \| static void sigusr2_handler(int sig, sig
1664		case MODE_68K:
1665		// 68k emulator active, trigger 68k interrupt level 1
1666		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1667	<	r->ccr \|= ntohl(kernel_data->v[0x674 >> 2]);
1667	>	r->cr() \|= ntohl(kernel_data->v[0x674 >> 2]);
1668		break;
1669
1670		#if INTERRUPTS_IN_NATIVE_MODE
1671		case MODE_NATIVE:
1672		// 68k emulator inactive, in nanokernel?
1673	<	if (r->gpr[1] != KernelDataAddr) {
1673	>	if (r->gpr(1) != KernelDataAddr) {
1674	>
1675	>	// Set extra stack for nested interrupts
1676	>	sig_stack_acquire();
1677	>
1678		// Prepare for 68k interrupt level 1
1679		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1680		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) \| ntohl(kernel_data->v[0x674 >> 2]));
1681
1682		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1683	<	atomic_add((int32 *)XLM_IRQ_NEST, 1);
1683	>	DisableInterrupt();
1684		if (ROMType == ROMTYPE_NEWWORLD)
1685		ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1686		else
1687		ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1688	+
1689	+	// Reset normal signal stack
1690	+	sig_stack_release();
1691		}
1692		break;
1693		#endif
#	Line 1364 \| Line 1698 \| static void sigusr2_handler(int sig, sig
1698		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1699
1700		// Set extra stack for SIGSEGV handler
1701	<	struct sigaltstack new_stack;
1368	<	new_stack.ss_sp = extra_stack;
1369	<	new_stack.ss_flags = 0;
1370	<	new_stack.ss_size = SIG_STACK_SIZE;
1371	<	sigaltstack(&new_stack, NULL);
1701	>	sig_stack_acquire();
1702		#if 1
1703		// Execute full 68k interrupt routine
1704		M68kRegisters r;
#	Line 1390 \| Line 1720 \| static void sigusr2_handler(int sig, sig
1720		if (InterruptFlags & INTFLAG_VIA) {
1721		ClearInterruptFlag(INTFLAG_VIA);
1722		ADBInterrupt();
1723	<	ExecutePPC(VideoVBL);
1723	>	ExecuteNative(NATIVE_VIDEO_VBL);
1724		}
1725		}
1726		#endif
1727		// Reset normal signal stack
1728	<	new_stack.ss_sp = sig_stack;
1399	<	new_stack.ss_flags = 0;
1400	<	new_stack.ss_size = SIG_STACK_SIZE;
1401	<	sigaltstack(&new_stack, NULL);
1728	>	sig_stack_release();
1729		}
1730		break;
1731		#endif
#	Line 1412 \| Line 1739 \| static void sigusr2_handler(int sig, sig
1739		*/
1740
1741		#if !EMULATED_PPC
1742	<	static void sigsegv_handler(int sig, sigcontext_struct *sc)
1742	>	static void sigsegv_handler(int sig, siginfo_t sip, void scp)
1743		{
1744	<	pt_regs *r = sc->regs;
1744	>	machine_regs *r = MACHINE_REGISTERS(scp);
1745
1746		// Get effective address
1747	<	uint32 addr = r->dar;
1747	>	uint32 addr = r->dar();
1748
1749		#if ENABLE_VOSF
1750		// Handle screen fault.
1751		extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1752	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1752	>	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc()))
1753		return;
1754		#endif
1755
1756		num_segv++;
1757
1758	<	// Fault in Mac ROM or RAM?
1759	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) \|\| (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1758	>	// Fault in Mac ROM or RAM or DR Cache?
1759	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) \|\| (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize)) \|\| (r->pc() >= DR_CACHE_BASE && r->pc() < (DR_CACHE_BASE + DR_CACHE_SIZE));
1760		if (mac_fault) {
1761
1762		// "VM settings" during MacOS 8 installation
1763	<	if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1764	<	r->nip += 4;
1765	<	r->gpr[8] = 0;
1763	>	if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) {
1764	>	r->pc() += 4;
1765	>	r->gpr(8) = 0;
1766		return;
1767
1768		// MacOS 8.5 installation
1769	<	} else if (r->nip == ROM_BASE + 0x488140 && r->gpr[16] == 0xf8000000) {
1770	<	r->nip += 4;
1771	<	r->gpr[8] = 0;
1769	>	} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) {
1770	>	r->pc() += 4;
1771	>	r->gpr(8) = 0;
1772		return;
1773
1774		// MacOS 8 serial drivers on startup
1775	<	} else if (r->nip == ROM_BASE + 0x48e080 && (r->gpr[8] == 0xf3012002 \|\| r->gpr[8] == 0xf3012000)) {
1776	<	r->nip += 4;
1777	<	r->gpr[8] = 0;
1775	>	} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 \|\| r->gpr(8) == 0xf3012000)) {
1776	>	r->pc() += 4;
1777	>	r->gpr(8) = 0;
1778		return;
1779
1780		// MacOS 8.1 serial drivers on startup
1781	<	} else if (r->nip == ROM_BASE + 0x48c5e0 && (r->gpr[20] == 0xf3012002 \|\| r->gpr[20] == 0xf3012000)) {
1782	<	r->nip += 4;
1781	>	} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 \|\| r->gpr(20) == 0xf3012000)) {
1782	>	r->pc() += 4;
1783		return;
1784	<	} else if (r->nip == ROM_BASE + 0x4a10a0 && (r->gpr[20] == 0xf3012002 \|\| r->gpr[20] == 0xf3012000)) {
1785	<	r->nip += 4;
1784	>	} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 \|\| r->gpr(20) == 0xf3012000)) {
1785	>	r->pc() += 4;
1786	>	return;
1787	>
1788	>	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
1789	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(16) == 0xf3012002 \|\| r->gpr(16) == 0xf3012000)) {
1790	>	r->pc() += 4;
1791	>	return;
1792	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(20) == 0xf3012002 \|\| r->gpr(20) == 0xf3012000)) {
1793	>	r->pc() += 4;
1794		return;
1795		}
1796
1797		// Get opcode and divide into fields
1798	<	uint32 opcode = ((uint32 )r->nip);
1798	>	uint32 opcode = ((uint32 )r->pc());
1799		uint32 primop = opcode >> 26;
1800		uint32 exop = (opcode >> 1) & 0x3ff;
1801		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1549 \| Line 1884 \| static void sigsegv_handler(int sig, sig
1884		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1885		case 45: // sthu
1886		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1887	+	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1888	+	case 46: // lmw
1889	+	if ((addr % 4) != 0) {
1890	+	uint32 ea = addr;
1891	+	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1892	+	for (int i = rd; i <= 31; i++) {
1893	+	r->gpr(i) = ReadMacInt32(ea);
1894	+	ea += 4;
1895	+	}
1896	+	r->pc() += 4;
1897	+	goto rti;
1898	+	}
1899	+	break;
1900	+	case 47: // stmw
1901	+	if ((addr % 4) != 0) {
1902	+	uint32 ea = addr;
1903	+	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1904	+	for (int i = rd; i <= 31; i++) {
1905	+	WriteMacInt32(ea, r->gpr(i));
1906	+	ea += 4;
1907	+	}
1908	+	r->pc() += 4;
1909	+	goto rti;
1910	+	}
1911	+	break;
1912	+	#endif
1913		}
1914
1915	<	// Ignore ROM writes
1916	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1917	<	// D(bug("WARNING: %s write access to ROM at %08lx, pc %08lx\n", transfer_size == SIZE_BYTE ? "Byte" : transfer_size == SIZE_HALFWORD ? "Halfword" : "Word", addr, r->nip));
1915	>	// Ignore ROM writes (including to the zero page, which is read-only)
1916	>	if (transfer_type == TYPE_STORE &&
1917	>	((addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) \|\|
1918	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1919	>	// D(bug("WARNING: %s write access to ROM at %08lx, pc %08lx\n", transfer_size == SIZE_BYTE ? "Byte" : transfer_size == SIZE_HALFWORD ? "Halfword" : "Word", addr, r->pc()));
1920		if (addr_mode == MODE_U \|\| addr_mode == MODE_UX)
1921	<	r->gpr[ra] = addr;
1922	<	r->nip += 4;
1921	>	r->gpr(ra) = addr;
1922	>	r->pc() += 4;
1923		goto rti;
1924		}
1925
1926		// Ignore illegal memory accesses?
1927		if (PrefsFindBool("ignoresegv")) {
1928		if (addr_mode == MODE_U \|\| addr_mode == MODE_UX)
1929	<	r->gpr[ra] = addr;
1929	>	r->gpr(ra) = addr;
1930		if (transfer_type == TYPE_LOAD)
1931	<	r->gpr[rd] = 0;
1932	<	r->nip += 4;
1931	>	r->gpr(rd) = 0;
1932	>	r->pc() += 4;
1933		goto rti;
1934		}
1935
#	Line 1574 \| Line 1937 \| static void sigsegv_handler(int sig, sig
1937		if (!PrefsFindBool("nogui")) {
1938		char str[256];
1939		if (transfer_type == TYPE_LOAD \|\| transfer_type == TYPE_STORE)
1940	<	sprintf(str, GetString(STR_MEM_ACCESS_ERR), transfer_size == SIZE_BYTE ? "byte" : transfer_size == SIZE_HALFWORD ? "halfword" : "word", transfer_type == TYPE_LOAD ? GetString(STR_MEM_ACCESS_READ) : GetString(STR_MEM_ACCESS_WRITE), addr, r->nip, r->gpr[24], r->gpr[1]);
1940	>	sprintf(str, GetString(STR_MEM_ACCESS_ERR), transfer_size == SIZE_BYTE ? "byte" : transfer_size == SIZE_HALFWORD ? "halfword" : "word", transfer_type == TYPE_LOAD ? GetString(STR_MEM_ACCESS_READ) : GetString(STR_MEM_ACCESS_WRITE), addr, r->pc(), r->gpr(24), r->gpr(1));
1941		else
1942	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1942	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1943		ErrorAlert(str);
1944		QuitEmulator();
1945		return;
#	Line 1584 \| Line 1947 \| static void sigsegv_handler(int sig, sig
1947		}
1948
1949		// For all other errors, jump into debugger (sort of...)
1950	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1951		if (!ready_for_signals) {
1952	<	printf("SIGSEGV\n");
1953	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1952	>	printf("%s\n");
1953	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1954		printf(
1955		" pc %08lx lr %08lx ctr %08lx msr %08lx\n"
1956		" xer %08lx cr %08lx \n"
#	Line 1598 \| Line 1962 \| static void sigsegv_handler(int sig, sig
1962		" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n"
1963		" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n"
1964		" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n",
1965	<	r->nip, r->link, r->ctr, r->msr,
1966	<	r->xer, r->ccr,
1967	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1968	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1969	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1970	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1971	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1972	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1973	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1974	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1965	>	crash_reason,
1966	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1967	>	r->xer(), r->cr(),
1968	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1969	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1970	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1971	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1972	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1973	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1974	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1975	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1976		exit(1);
1977		QuitEmulator();
1978		return;
1979		} else {
1980		// We crashed. Save registers, tell tick thread and loop forever
1981	<	sigsegv_regs = (sigregs )r;
1981	>	build_sigregs(&sigsegv_regs, r);
1982		emul_thread_fatal = true;
1983		for (;;) ;
1984		}
#	Line 1625 \| Line 1990 \| rti:;
1990		* SIGILL handler
1991		*/
1992
1993	<	static void sigill_handler(int sig, sigcontext_struct *sc)
1993	>	static void sigill_handler(int sig, siginfo_t sip, void scp)
1994		{
1995	<	pt_regs *r = sc->regs;
1995	>	machine_regs *r = MACHINE_REGISTERS(scp);
1996		char str[256];
1997
1998		// Fault in Mac ROM or RAM?
1999	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) \|\| (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1999	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) \|\| (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
2000		if (mac_fault) {
2001
2002		// Get opcode and divide into fields
2003	<	uint32 opcode = ((uint32 )r->nip);
2003	>	uint32 opcode = ((uint32 )r->pc());
2004		uint32 primop = opcode >> 26;
2005		uint32 exop = (opcode >> 1) & 0x3ff;
2006		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1646 \| Line 2011 \| static void sigill_handler(int sig, sigc
2011		switch (primop) {
2012		case 9: // POWER instructions
2013		case 22:
2014	<	power_inst: sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->nip, r->gpr[1], opcode);
2014	>	power_inst: sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode);
2015		ErrorAlert(str);
2016		QuitEmulator();
2017		return;
#	Line 1654 \| Line 2019 \| power_inst: sprintf(str, GetString(STR_
2019		case 31:
2020		switch (exop) {
2021		case 83: // mfmsr
2022	<	r->gpr[rd] = 0xf072;
2023	<	r->nip += 4;
2022	>	r->gpr(rd) = 0xf072;
2023	>	r->pc() += 4;
2024		goto rti;
2025
2026		case 210: // mtsr
2027		case 242: // mtsrin
2028		case 306: // tlbie
2029	<	r->nip += 4;
2029	>	r->pc() += 4;
2030		goto rti;
2031
2032		case 339: { // mfspr
#	Line 1677 \| Line 2042 \| power_inst: sprintf(str, GetString(STR_
2042		case 957: // PMC3
2043		case 958: // PMC4
2044		case 959: // SDA
2045	<	r->nip += 4;
2045	>	r->pc() += 4;
2046		goto rti;
2047		case 25: // SDR1
2048	<	r->gpr[rd] = 0xdead001f;
2049	<	r->nip += 4;
2048	>	r->gpr(rd) = 0xdead001f;
2049	>	r->pc() += 4;
2050		goto rti;
2051		case 287: // PVR
2052	<	r->gpr[rd] = PVR;
2053	<	r->nip += 4;
2052	>	r->gpr(rd) = PVR;
2053	>	r->pc() += 4;
2054		goto rti;
2055		}
2056		break;
#	Line 1721 \| Line 2086 \| power_inst: sprintf(str, GetString(STR_
2086		case 957: // PMC3
2087		case 958: // PMC4
2088		case 959: // SDA
2089	<	r->nip += 4;
2089	>	r->pc() += 4;
2090		goto rti;
2091		}
2092		break;
#	Line 1740 \| Line 2105 \| power_inst: sprintf(str, GetString(STR_
2105
2106		// In GUI mode, show error alert
2107		if (!PrefsFindBool("nogui")) {
2108	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
2108	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
2109		ErrorAlert(str);
2110		QuitEmulator();
2111		return;
#	Line 1748 \| Line 2113 \| power_inst: sprintf(str, GetString(STR_
2113		}
2114
2115		// For all other errors, jump into debugger (sort of...)
2116	+	crash_reason = "SIGILL";
2117		if (!ready_for_signals) {
2118	<	printf("SIGILL\n");
2119	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
2118	>	printf("%s\n");
2119	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
2120		printf(
2121		" pc %08lx lr %08lx ctr %08lx msr %08lx\n"
2122		" xer %08lx cr %08lx \n"
#	Line 1762 \| Line 2128 \| power_inst: sprintf(str, GetString(STR_
2128		" r20 %08lx r21 %08lx r22 %08lx r23 %08lx\n"
2129		" r24 %08lx r25 %08lx r26 %08lx r27 %08lx\n"
2130		" r28 %08lx r29 %08lx r30 %08lx r31 %08lx\n",
2131	<	r->nip, r->link, r->ctr, r->msr,
2132	<	r->xer, r->ccr,
2133	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
2134	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
2135	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
2136	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
2137	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
2138	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
2139	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
2140	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
2131	>	crash_reason,
2132	>	r->pc(), r->lr(), r->ctr(), r->msr(),
2133	>	r->xer(), r->cr(),
2134	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
2135	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
2136	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
2137	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
2138	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
2139	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
2140	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
2141	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
2142		exit(1);
2143		QuitEmulator();
2144		return;
2145		} else {
2146		// We crashed. Save registers, tell tick thread and loop forever
2147	<	sigsegv_regs = (sigregs )r;
2147	>	build_sigregs(&sigsegv_regs, r);
2148		emul_thread_fatal = true;
2149		for (;;) ;
2150		}
#	Line 1787 \| Line 2154 \| rti:;
2154
2155
2156		/*
2157	+	* Helpers to share 32-bit addressable data with MacOS
2158	+	*/
2159	+
2160	+	bool SheepMem::Init(void)
2161	+	{
2162	+	// Size of a native page
2163	+	page_size = getpagesize();
2164	+
2165	+	// Allocate SheepShaver globals
2166	+	if (vm_acquire_fixed((char *)base, size) < 0)
2167	+	return false;
2168	+
2169	+	// Allocate page with all bits set to 0
2170	+	zero_page = base + size;
2171	+	if (vm_acquire_fixed((char *)zero_page, page_size) < 0)
2172	+	return false;
2173	+	memset((char *)zero_page, 0, page_size);
2174	+	if (vm_protect((char *)zero_page, page_size, VM_PAGE_READ) < 0)
2175	+	return false;
2176	+
2177	+	#if EMULATED_PPC
2178	+	// Allocate alternate stack for PowerPC interrupt routine
2179	+	sig_stack = zero_page + page_size;
2180	+	if (vm_acquire_fixed((char *)sig_stack, SIG_STACK_SIZE) < 0)
2181	+	return false;
2182	+	#endif
2183	+
2184	+	top = base + size;
2185	+	return true;
2186	+	}
2187	+
2188	+	void SheepMem::Exit(void)
2189	+	{
2190	+	if (top) {
2191	+	// Delete SheepShaver globals
2192	+	vm_release((void *)base, size);
2193	+
2194	+	// Delete zero page
2195	+	vm_release((void *)zero_page, page_size);
2196	+
2197	+	#if EMULATED_PPC
2198	+	// Delete alternate stack for PowerPC interrupt routine
2199	+	vm_release((void *)sig_stack, SIG_STACK_SIZE);
2200	+	#endif
2201	+	}
2202	+	}
2203	+
2204	+
2205	+	/*
2206		* Display alert
2207		*/
2208
#	Line 1835 \| Line 2251 \| void display_alert(int title_id, int pre
2251
2252		void ErrorAlert(const char *text)
2253		{
2254	<	#ifdef ENABLE_GTK
2254	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2255		if (PrefsFindBool("nogui") \|\| x_display == NULL) {
2256		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
2257		return;
#	Line 1854 \| Line 2270 \| *void ErrorAlert(const char text)**
2270
2271		void WarningAlert(const char *text)
2272		{
2273	<	#ifdef ENABLE_GTK
2273	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2274		if (PrefsFindBool("nogui") \|\| x_display == NULL) {
2275		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
2276		return;

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Comparing SheepShaver/src/Unix/main_unix.cpp (file contents): Revision 1.14 by gbeauche, 2003-11-10T16:05:52Z vs. Revision 1.47 by gbeauche, 2004-07-03T10:39:06Z

Diff Legend

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.14 by gbeauche, 2003-11-10T16:05:52Z vs.
Revision 1.47 by gbeauche, 2004-07-03T10:39:06Z