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root/cebix/SheepShaver/src/Unix/main_unix.cpp

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.13 by gbeauche, 2003-11-03T21:28:25Z vs.
Revision 1.50 by gbeauche, 2004-07-10T06:15:42Z

#	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 (sscanf(line, "%[ |]\"timebase-frequency\" = <%x>", head, &value) == 2)
602	>	TimebaseSpeed = value;
603	>	else if (strchr(line, '}'))
604	>	powerpc_node = false;
605	>	}
606	>	}
607	>	fclose(proc_file);
608	>	} else {
609	>	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
610	>	WarningAlert(str);
611	>	}
612	>	#else
613		proc_file = fopen("/proc/cpuinfo", "r");
614		if (proc_file) {
615	+	// CPU specs from Linux kernel
616	+	// TODO: make it more generic with features (e.g. AltiVec) and
617	+	// cache information and friends for NameRegistry
618	+	static const struct {
619	+	uint32 pvr_mask;
620	+	uint32 pvr_value;
621	+	const char *cpu_name;
622	+	}
623	+	cpu_specs[] = {
624	+	{ 0xffff0000, 0x00010000, "601" },
625	+	{ 0xffff0000, 0x00030000, "603" },
626	+	{ 0xffff0000, 0x00060000, "603e" },
627	+	{ 0xffff0000, 0x00070000, "603ev" },
628	+	{ 0xffff0000, 0x00040000, "604" },
629	+	{ 0xfffff000, 0x00090000, "604e" },
630	+	{ 0xffff0000, 0x00090000, "604r" },
631	+	{ 0xffff0000, 0x000a0000, "604ev" },
632	+	{ 0xffffffff, 0x00084202, "740/750" },
633	+	{ 0xfffff000, 0x00083000, "745/755" },
634	+	{ 0xfffffff0, 0x00080100, "750CX" },
635	+	{ 0xfffffff0, 0x00082200, "750CX" },
636	+	{ 0xfffffff0, 0x00082210, "750CXe" },
637	+	{ 0xffffff00, 0x70000100, "750FX" },
638	+	{ 0xffffffff, 0x70000200, "750FX" },
639	+	{ 0xffff0000, 0x70000000, "750FX" },
640	+	{ 0xffff0000, 0x70020000, "750GX" },
641	+	{ 0xffff0000, 0x00080000, "740/750" },
642	+	{ 0xffffffff, 0x000c1101, "7400 (1.1)" },
643	+	{ 0xffff0000, 0x000c0000, "7400" },
644	+	{ 0xffff0000, 0x800c0000, "7410" },
645	+	{ 0xffffffff, 0x80000200, "7450" },
646	+	{ 0xffffffff, 0x80000201, "7450" },
647	+	{ 0xffff0000, 0x80000000, "7450" },
648	+	{ 0xffffff00, 0x80010100, "7455" },
649	+	{ 0xffffffff, 0x80010200, "7455" },
650	+	{ 0xffff0000, 0x80010000, "7455" },
651	+	{ 0xffff0000, 0x80020000, "7457" },
652	+	{ 0xffff0000, 0x80030000, "7447A" },
653	+	{ 0x7fff0000, 0x00810000, "82xx" },
654	+	{ 0x7fff0000, 0x00820000, "8280" },
655	+	{ 0xffff0000, 0x00400000, "Power3 (630)" },
656	+	{ 0xffff0000, 0x00410000, "Power3 (630+)" },
657	+	{ 0xffff0000, 0x00360000, "I-star" },
658	+	{ 0xffff0000, 0x00370000, "S-star" },
659	+	{ 0xffff0000, 0x00350000, "Power4" },
660	+	{ 0xffff0000, 0x00390000, "PPC970" },
661	+	{ 0, 0, 0 }
662	+	};
663	+
664		char line[256];
665		while(fgets(line, 255, proc_file)) {
666		// Read line
#	Line 389 | Line 672 | int main(int argc, char **argv)
672		// Parse line
673		int i;
674		char value[256];
675	<	if (sscanf(line, "cpu : %s", value) == 1) {
676	<	if (strcmp(value, "601") == 0)
677	<	PVR = 0x00010000;
678	<	else if (strcmp(value, "603") == 0)
679	<	PVR = 0x00030000;
680	<	else if (strcmp(value, "604") == 0)
681	<	PVR = 0x00040000;
682	<	else if (strcmp(value, "603e") == 0)
683	<	PVR = 0x00060000;
684	<	else if (strcmp(value, "603ev") == 0)
685	<	PVR = 0x00070000;
403	<	else if (strcmp(value, "604e") == 0)
404	<	PVR = 0x00090000;
405	<	else if (strcmp(value, "604ev5") == 0)
406	<	PVR = 0x000a0000;
407	<	else if (strcmp(value, "750") == 0)
408	<	PVR = 0x00080000;
409	<	else if (strcmp(value, "821") == 0)
410	<	PVR = 0x00320000;
411	<	else if (strcmp(value, "860") == 0)
412	<	PVR = 0x00500000;
413	<	else
675	>	if (sscanf(line, "cpu : %[0-9A-Za-a]", value) == 1) {
676	>	// Search by name
677	>	const char *cpu_name = NULL;
678	>	for (int i = 0; cpu_specs[i].pvr_mask != 0; i++) {
679	>	if (strcmp(cpu_specs[i].cpu_name, value) == 0) {
680	>	cpu_name = cpu_specs[i].cpu_name;
681	>	PVR = cpu_specs[i].pvr_value;
682	>	break;
683	>	}
684	>	}
685	>	if (cpu_name == NULL)
686		printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
687	+	else
688	+	printf("Found a PowerPC %s processor\n", cpu_name);
689		}
690		if (sscanf(line, "clock : %dMHz", &i) == 1)
691		CPUClockSpeed = BusClockSpeed = i * 1000000;
#	Line 421 | Line 695 | int main(int argc, char **argv)
695		sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
696		WarningAlert(str);
697		}
698	+
699	+	// Get actual bus frequency
700	+	proc_file = fopen("/proc/device-tree/clock-frequency", "r");
701	+	if (proc_file) {
702	+	union { uint8 b[4]; uint32 l; } value;
703	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
704	+	BusClockSpeed = value.l;
705	+	fclose(proc_file);
706	+	}
707	+
708	+	// Get actual timebase frequency
709	+	TimebaseSpeed = BusClockSpeed / 4;
710	+	DIR *cpus_dir;
711	+	if ((cpus_dir = opendir("/proc/device-tree/cpus")) != NULL) {
712	+	struct dirent *cpu_entry;
713	+	while ((cpu_entry = readdir(cpus_dir)) != NULL) {
714	+	if (strstr(cpu_entry->d_name, "PowerPC,") == cpu_entry->d_name) {
715	+	char timebase_freq_node[256];
716	+	sprintf(timebase_freq_node, "/proc/device-tree/cpus/%s/timebase-frequency", cpu_entry->d_name);
717	+	proc_file = fopen(timebase_freq_node, "r");
718	+	if (proc_file) {
719	+	union { uint8 b[4]; uint32 l; } value;
720	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
721	+	TimebaseSpeed = value.l;
722	+	fclose(proc_file);
723	+	}
724	+	}
725	+	}
726	+	closedir(cpus_dir);
727	+	}
728		#endif
729	+	// Remap any newer G4/G5 processor to plain G4 for compatibility
730	+	switch (PVR >> 16) {
731	+	case 0x8000:                            // 7450
732	+	case 0x8001:                            // 7455
733	+	case 0x8002:                            // 7457
734	+	case 0x0039:                            //  970
735	+	PVR = 0x000c0000;               // 7400
736	+	break;
737	+	}
738		D(bug("PVR: %08x (assumed)\n", PVR));
739
740		// Init system routines
#	Line 445 | Line 758 | int main(int argc, char **argv)
758		goto quit;
759		}
760
761	+	#ifndef PAGEZERO_HACK
762		// Create Low Memory area (0x0000..0x3000)
763		if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
764		sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
#	Line 452 | Line 766 | int main(int argc, char **argv)
766		goto quit;
767		}
768		lm_area_mapped = true;
769	+	#endif
770
771		// Create areas for Kernel Data
772		kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
#	Line 470 | Line 785 | int main(int argc, char **argv)
785		ErrorAlert(str);
786		goto quit;
787		}
788	<	kernel_data = (KernelData *)0x68ffe000;
788	>	kernel_data = (KernelData *)KERNEL_DATA_BASE;
789		emulator_data = &kernel_data->ed;
790	<	KernelDataAddr = (uint32)kernel_data;
790	>	KernelDataAddr = KERNEL_DATA_BASE;
791		D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
792
793	+	// Create area for DR Cache
794	+	if (vm_acquire_fixed((void *)DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) {
795	+	sprintf(str, GetString(STR_DR_EMULATOR_MMAP_ERR), strerror(errno));
796	+	ErrorAlert(str);
797	+	goto quit;
798	+	}
799	+	dr_emulator_area_mapped = true;
800	+	if (vm_acquire_fixed((void *)DR_CACHE_BASE, DR_CACHE_SIZE) < 0) {
801	+	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
802	+	ErrorAlert(str);
803	+	goto quit;
804	+	}
805	+	dr_cache_area_mapped = true;
806	+	#if !EMULATED_PPC
807	+	if (vm_protect((char *)DR_CACHE_BASE, DR_CACHE_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
808	+	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
809	+	ErrorAlert(str);
810	+	goto quit;
811	+	}
812	+	#endif
813	+	DRCacheAddr = DR_CACHE_BASE;
814	+	D(bug("DR Cache at %p\n", DRCacheAddr));
815	+
816		// Create area for SheepShaver data
817	<	if (vm_acquire_fixed((char *)SHEEP_BASE, SHEEP_SIZE) < 0) {
817	>	if (!SheepMem::Init()) {
818		sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
819		ErrorAlert(str);
820		goto quit;
821		}
484	–	SheepStack1Base = SHEEP_BASE + 0x10000;
485	–	SheepStack2Base = SheepStack1Base + 0x10000;
486	–	SheepThunksBase = SheepStack2Base + 0x1000;
487	–	sheep_area_mapped = true;
822
823		// Create area for Mac ROM
824		if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
#	Line 492 | Line 826 | int main(int argc, char **argv)
826		ErrorAlert(str);
827		goto quit;
828		}
829	<	#if !EMULATED_PPC || defined(__powerpc__)
829	>	#if !EMULATED_PPC
830		if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
831		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
832		ErrorAlert(str);
#	Line 562 | Line 896 | int main(int argc, char **argv)
896		// Load NVRAM
897		XPRAMInit();
898
899	+	// Load XPRAM default values if signature not found
900	+	if (XPRAM[0x130c] != 0x4e || XPRAM[0x130d] != 0x75
901	+	|| XPRAM[0x130e] != 0x4d || XPRAM[0x130f] != 0x63) {
902	+	D(bug("Loading XPRAM default values\n"));
903	+	memset(XPRAM + 0x1300, 0, 0x100);
904	+	XPRAM[0x130c] = 0x4e;   // "NuMc" signature
905	+	XPRAM[0x130d] = 0x75;
906	+	XPRAM[0x130e] = 0x4d;
907	+	XPRAM[0x130f] = 0x63;
908	+	XPRAM[0x1301] = 0x80;   // InternalWaitFlags = DynWait (don't wait for SCSI devices upon bootup)
909	+	XPRAM[0x1310] = 0xa8;   // Standard PRAM values
910	+	XPRAM[0x1311] = 0x00;
911	+	XPRAM[0x1312] = 0x00;
912	+	XPRAM[0x1313] = 0x22;
913	+	XPRAM[0x1314] = 0xcc;
914	+	XPRAM[0x1315] = 0x0a;
915	+	XPRAM[0x1316] = 0xcc;
916	+	XPRAM[0x1317] = 0x0a;
917	+	XPRAM[0x131c] = 0x00;
918	+	XPRAM[0x131d] = 0x02;
919	+	XPRAM[0x131e] = 0x63;
920	+	XPRAM[0x131f] = 0x00;
921	+	XPRAM[0x1308] = 0x13;
922	+	XPRAM[0x1309] = 0x88;
923	+	XPRAM[0x130a] = 0x00;
924	+	XPRAM[0x130b] = 0xcc;
925	+	XPRAM[0x1376] = 0x00;   // OSDefault = MacOS
926	+	XPRAM[0x1377] = 0x01;
927	+	}
928	+
929		// Set boot volume
930		i16 = PrefsFindInt32("bootdrive");
931		XPRAM[0x1378] = i16 >> 8;
#	Line 579 | Line 943 | int main(int argc, char **argv)
943		boot_globs[1] = htonl(RAMSize);
944		boot_globs[2] = htonl((uint32)-1);                      // End of bank table
945
946	+	// Init thunks
947	+	if (!ThunksInit())
948	+	goto quit;
949	+
950		// Init drivers
951		SonyInit();
952		DiskInit();
#	Line 588 | Line 956 | int main(int argc, char **argv)
956		// Init external file system
957		ExtFSInit();
958
959	+	// Init ADB
960	+	ADBInit();
961	+
962		// Init audio
963		AudioInit();
964
#	Line 622 | Line 993 | int main(int argc, char **argv)
993		// Initialize Kernel Data
994		memset(kernel_data, 0, sizeof(KernelData));
995		if (ROMType == ROMTYPE_NEWWORLD) {
996	<	static uint32 of_dev_tree[4] = {0, 0, 0, 0};
997	<	static uint8 vector_lookup_tbl[128];
998	<	static uint8 vector_mask_tbl[64];
996	>	uintptr of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32));
997	>	memset((void *)of_dev_tree, 0, 4 * sizeof(uint32));
998	>	uintptr vector_lookup_tbl = SheepMem::Reserve(128);
999	>	uintptr vector_mask_tbl = SheepMem::Reserve(64);
1000		memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
1001	<	memset(vector_lookup_tbl, 0, 128);
1002	<	memset(vector_mask_tbl, 0, 64);
1001	>	memset((void *)vector_lookup_tbl, 0, 128);
1002	>	memset((void *)vector_mask_tbl, 0, 64);
1003		kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
1004	<	kernel_data->v[0xb84 >> 2] = htonl((uint32)of_dev_tree);        // OF device tree base
1005	<	kernel_data->v[0xb90 >> 2] = htonl((uint32)vector_lookup_tbl);
1006	<	kernel_data->v[0xb94 >> 2] = htonl((uint32)vector_mask_tbl);
1004	>	kernel_data->v[0xb84 >> 2] = htonl(of_dev_tree);                        // OF device tree base
1005	>	kernel_data->v[0xb90 >> 2] = htonl(vector_lookup_tbl);
1006	>	kernel_data->v[0xb94 >> 2] = htonl(vector_mask_tbl);
1007		kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE);                           // OpenPIC base
1008		kernel_data->v[0xbb0 >> 2] = htonl(0);                                          // ADB base
1009		kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
#	Line 644 | Line 1016 | int main(int argc, char **argv)
1016		kernel_data->v[0xc50 >> 2] = htonl(RAMBase);
1017		kernel_data->v[0xc54 >> 2] = htonl(RAMSize);
1018		kernel_data->v[0xf60 >> 2] = htonl(PVR);
1019	<	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed);
1020	<	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed);
1021	<	kernel_data->v[0xf6c >> 2] = htonl(CPUClockSpeed);
1019	>	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed);                      // clock-frequency
1020	>	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed);                      // bus-frequency
1021	>	kernel_data->v[0xf6c >> 2] = htonl(TimebaseSpeed);                      // timebase-frequency
1022		} else {
1023		kernel_data->v[0xc80 >> 2] = htonl(RAMSize);
1024		kernel_data->v[0xc84 >> 2] = htonl(RAMSize);
#	Line 658 | Line 1030 | int main(int argc, char **argv)
1030		kernel_data->v[0xcb0 >> 2] = htonl(RAMBase);
1031		kernel_data->v[0xcb4 >> 2] = htonl(RAMSize);
1032		kernel_data->v[0xf80 >> 2] = htonl(PVR);
1033	<	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed);
1034	<	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed);
1035	<	kernel_data->v[0xf8c >> 2] = htonl(CPUClockSpeed);
1033	>	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed);                      // clock-frequency
1034	>	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed);                      // bus-frequency
1035	>	kernel_data->v[0xf8c >> 2] = htonl(TimebaseSpeed);                      // timebase-frequency
1036		}
1037
1038		// Initialize extra low memory
1039		D(bug("Initializing Low Memory...\n"));
1040		memset(NULL, 0, 0x3000);
1041		WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h'));                  // Signature to detect SheepShaver
1042	<	WriteMacInt32(XLM_KERNEL_DATA, (uint32)kernel_data);                    // For trap replacement routines
1042	>	WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr);                                 // For trap replacement routines
1043		WriteMacInt32(XLM_PVR, PVR);                                                                    // Theoretical PVR
1044		WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed);                                    // For DriverServicesLib patch
1045		WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN);                // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
1046	<	#if EMULATED_PPC
1047	<	WriteMacInt32(XLM_ETHER_INIT, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_INIT));
1048	<	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);
1046	>	WriteMacInt32(XLM_ZERO_PAGE, SheepMem::ZeroPage());                             // Pointer to read-only page with all bits set to 0
1047	>	#if !EMULATED_PPC
1048	>	WriteMacInt32(XLM_TOC, (uint32)TOC);                                                            // TOC pointer of emulator
1049		#endif
1050	+	WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT));       // DLPI ethernet driver functions
1051	+	WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM));
1052	+	WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN));
1053	+	WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE));
1054	+	WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT));
1055	+	WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV));
1056	+	WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO));
1057		D(bug("Low Memory initialized\n"));
1058
1059		// Start 60Hz thread
1060	+	tick_thread_cancel = false;
1061		tick_thread_active = (pthread_create(&tick_thread, NULL, tick_func, NULL) == 0);
1062		D(bug("Tick thread installed (%ld)\n", tick_thread));
1063
1064		// Start NVRAM watchdog thread
1065		memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1066	+	nvram_thread_cancel = false;
1067		nvram_thread_active = (pthread_create(&nvram_thread, NULL, nvram_func, NULL) == 0);
1068		D(bug("NVRAM thread installed (%ld)\n", nvram_thread));
1069
1070		#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	–
1071		// Install SIGILL handler
1072		sigemptyset(&sigill_action.sa_mask);    // Block interrupts during ILL handling
1073		sigaddset(&sigill_action.sa_mask, SIGUSR2);
1074	<	sigill_action.sa_handler = (__sighandler_t)sigill_handler;
1075	<	sigill_action.sa_flags = SA_ONSTACK;
1074	>	sigill_action.sa_sigaction = sigill_handler;
1075	>	sigill_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
1076	>	#ifdef HAVE_SIGNAL_SA_RESTORER
1077		sigill_action.sa_restorer = NULL;
1078	+	#endif
1079		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
1080		sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
1081		ErrorAlert(str);
#	Line 751 | Line 1083 | int main(int argc, char **argv)
1083		}
1084		#endif
1085
1086	+	#if !EMULATED_PPC
1087		// Install interrupt signal handler
1088		sigemptyset(&sigusr2_action.sa_mask);
1089	<	sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
1090	<	sigusr2_action.sa_flags = 0;
1091	<	#if !EMULATED_PPC
759	<	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART;
760	<	#endif
1089	>	sigusr2_action.sa_sigaction = sigusr2_handler;
1090	>	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO;
1091	>	#ifdef HAVE_SIGNAL_SA_RESTORER
1092		sigusr2_action.sa_restorer = NULL;
1093	+	#endif
1094		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
1095		sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
1096		ErrorAlert(str);
1097		goto quit;
1098		}
1099	+	#endif
1100
1101		// Get my thread ID and execute MacOS thread function
1102		emul_thread = pthread_self();
#	Line 789 | Line 1122 | static void Quit(void)
1122
1123		// Stop 60Hz thread
1124		if (tick_thread_active) {
1125	+	tick_thread_cancel = true;
1126		pthread_cancel(tick_thread);
1127		pthread_join(tick_thread, NULL);
1128		}
1129
1130		// Stop NVRAM watchdog thread
1131		if (nvram_thread_active) {
1132	+	nvram_thread_cancel = true;
1133		pthread_cancel(nvram_thread);
1134		pthread_join(nvram_thread, NULL);
1135		}
1136
1137		#if !EMULATED_PPC
1138	<	// Uninstall SIGSEGV handler
1138	>	// Uninstall SIGSEGV and SIGBUS handlers
1139		sigemptyset(&sigsegv_action.sa_mask);
1140		sigsegv_action.sa_handler = SIG_DFL;
1141		sigsegv_action.sa_flags = 0;
1142		sigaction(SIGSEGV, &sigsegv_action, NULL);
1143	+	sigaction(SIGBUS, &sigsegv_action, NULL);
1144
1145		// Uninstall SIGILL handler
1146		sigemptyset(&sigill_action.sa_mask);
1147		sigill_action.sa_handler = SIG_DFL;
1148		sigill_action.sa_flags = 0;
1149		sigaction(SIGILL, &sigill_action, NULL);
1150	+
1151	+	// Delete stacks for signal handlers
1152	+	for (int i = 0; i < SIG_STACK_COUNT; i++) {
1153	+	void *sig_stack = sig_stacks[i].ss_sp;
1154	+	if (sig_stack)
1155	+	free(sig_stack);
1156	+	}
1157		#endif
1158
1159		// Save NVRAM
#	Line 831 | Line 1174 | static void Quit(void)
1174		// Exit audio
1175		AudioExit();
1176
1177	+	// Exit ADB
1178	+	ADBExit();
1179	+
1180		// Exit video
1181		VideoExit();
1182
#	Line 843 | Line 1189 | static void Quit(void)
1189		DiskExit();
1190		SonyExit();
1191
1192	+	// Delete thunks
1193	+	ThunksExit();
1194	+
1195	+	// Delete SheepShaver globals
1196	+	SheepMem::Exit();
1197	+
1198		// Delete RAM area
1199		if (ram_area_mapped)
1200		vm_release((char *)RAM_BASE, RAMSize);
#	Line 851 | Line 1203 | static void Quit(void)
1203		if (rom_area_mapped)
1204		vm_release((char *)ROM_BASE, ROM_AREA_SIZE);
1205
1206	+	// Delete DR cache areas
1207	+	if (dr_emulator_area_mapped)
1208	+	vm_release((void *)DR_EMULATOR_BASE, DR_EMULATOR_SIZE);
1209	+	if (dr_cache_area_mapped)
1210	+	vm_release((void *)DR_CACHE_BASE, DR_CACHE_SIZE);
1211	+
1212		// Delete Kernel Data area
1213		if (kernel_area >= 0) {
1214		shmdt((void *)KERNEL_DATA_BASE);
#	Line 878 | Line 1236 | static void Quit(void)
1236		#endif
1237
1238		// Close X11 server connection
1239	+	#ifndef USE_SDL_VIDEO
1240		if (x_display)
1241		XCloseDisplay(x_display);
1242	+	#endif
1243
1244		exit(0);
1245		}
#	Line 954 | Line 1314 | void Execute68kTrap(uint16 trap, M68kReg
1314		uint16 proc[2] = {trap, M68K_RTS};
1315		Execute68k((uint32)proc, r);
1316		}
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	–	}
1317		#endif
1318
1319
#	Line 1045 | Line 1392 | void MakeExecutable(int dummy, void *sta
1392
1393		void PatchAfterStartup(void)
1394		{
1048	–	#if EMULATED_PPC
1395		ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1050	–	#else
1051	–	ExecutePPC(VideoInstallAccel);
1052	–	#endif
1396		InstallExtFS();
1397		}
1398
#	Line 1058 | Line 1401 | void PatchAfterStartup(void)
1401		*  NVRAM watchdog thread (saves NVRAM every minute)
1402		*/
1403
1404	<	static void *nvram_func(void *arg)
1404	>	static void nvram_watchdog(void)
1405		{
1406	<	struct timespec req = {60, 0};  // 1 minute
1406	>	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1407	>	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1408	>	SaveXPRAM();
1409	>	}
1410	>	}
1411
1412	<	for (;;) {
1413	<	pthread_testcancel();
1414	<	nanosleep(&req, NULL);
1415	<	pthread_testcancel();
1416	<	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1417	<	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1071	<	SaveXPRAM();
1072	<	}
1412	>	static void *nvram_func(void *arg)
1413	>	{
1414	>	while (!nvram_thread_cancel) {
1415	>	for (int i=0; i<60 && !nvram_thread_cancel; i++)
1416	>	Delay_usec(999999);             // Only wait 1 second so we quit promptly when nvram_thread_cancel becomes true
1417	>	nvram_watchdog();
1418		}
1419		return NULL;
1420		}
#	Line 1082 | Line 1427 | static void *nvram_func(void *arg)
1427		static void *tick_func(void *arg)
1428		{
1429		int tick_counter = 0;
1430	<	struct timespec req = {0, 16625000};
1430	>	uint64 start = GetTicks_usec();
1431	>	int64 ticks = 0;
1432	>	uint64 next = GetTicks_usec();
1433
1434	<	for (;;) {
1434	>	while (!tick_thread_cancel) {
1435
1436		// Wait
1437	<	nanosleep(&req, NULL);
1437	>	next += 16625;
1438	>	int64 delay = next - GetTicks_usec();
1439	>	if (delay > 0)
1440	>	Delay_usec(delay);
1441	>	else if (delay < -16625)
1442	>	next = GetTicks_usec();
1443	>	ticks++;
1444
1445		#if !EMULATED_PPC
1446		// Did we crash?
1447		if (emul_thread_fatal) {
1448
1449		// Yes, dump registers
1450	<	pt_regs *r = (pt_regs *)&sigsegv_regs;
1450	>	sigregs *r = &sigsegv_regs;
1451		char str[256];
1452	<	sprintf(str, "SIGSEGV\n"
1452	>	if (crash_reason == NULL)
1453	>	crash_reason = "SIGSEGV";
1454	>	sprintf(str, "%s\n"
1455		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1456		"  xer %08lx     cr %08lx  \n"
1457		"   r0 %08lx     r1 %08lx     r2 %08lx     r3 %08lx\n"
#	Line 1107 | Line 1462 | static void *tick_func(void *arg)
1462		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1463		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1464		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1465	+	crash_reason,
1466		r->nip, r->link, r->ctr, r->msr,
1467		r->xer, r->ccr,
1468		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1142 | Line 1498 | static void *tick_func(void *arg)
1498		TriggerInterrupt();
1499		}
1500		}
1501	+
1502	+	uint64 end = GetTicks_usec();
1503	+	D(bug("%Ld ticks in %Ld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
1504		return NULL;
1505		}
1506
#	Line 1152 | Line 1511 | static void *tick_func(void *arg)
1511
1512		void Set_pthread_attr(pthread_attr_t *attr, int priority)
1513		{
1514	<	// nothing to do
1514	>	#ifdef HAVE_PTHREADS
1515	>	pthread_attr_init(attr);
1516	>	#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
1517	>	// Some of these only work for superuser
1518	>	if (geteuid() == 0) {
1519	>	pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
1520	>	pthread_attr_setschedpolicy(attr, SCHED_FIFO);
1521	>	struct sched_param fifo_param;
1522	>	fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) +
1523	>	sched_get_priority_max(SCHED_FIFO)) / 2 +
1524	>	priority);
1525	>	pthread_attr_setschedparam(attr, &fifo_param);
1526	>	}
1527	>	if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) {
1528	>	#ifdef PTHREAD_SCOPE_BOUND_NP
1529	>	// If system scope is not available (eg. we're not running
1530	>	// with CAP_SCHED_MGT capability on an SGI box), try bound
1531	>	// scope.  It exposes pthread scheduling to the kernel,
1532	>	// without setting realtime priority.
1533	>	pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP);
1534	>	#endif
1535	>	}
1536	>	#endif
1537	>	#endif
1538		}
1539
1540
#	Line 1239 | Line 1621 | void B2_delete_mutex(B2_mutex *mutex)
1621		*  Trigger signal USR2 from another thread
1622		*/
1623
1624	<	#if !EMULATED_PPC || ASYNC_IRQ
1624	>	#if !EMULATED_PPC
1625		void TriggerInterrupt(void)
1626		{
1627		if (ready_for_signals)
#	Line 1271 | Line 1653 | void ClearInterruptFlag(uint32 flag)
1653
1654		void DisableInterrupt(void)
1655		{
1656	+	#if EMULATED_PPC
1657	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) + 1);
1658	+	#else
1659		atomic_add((int *)XLM_IRQ_NEST, 1);
1660	+	#endif
1661		}
1662
1663
#	Line 1281 | Line 1667 | void DisableInterrupt(void)
1667
1668		void EnableInterrupt(void)
1669		{
1670	+	#if EMULATED_PPC
1671	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) - 1);
1672	+	#else
1673		atomic_add((int *)XLM_IRQ_NEST, -1);
1674	+	#endif
1675		}
1676
1677
#	Line 1289 | Line 1679 | void EnableInterrupt(void)
1679		*  USR2 handler
1680		*/
1681
1682	<	#if EMULATED_PPC
1683	<	static void sigusr2_handler(int sig)
1682	>	#if !EMULATED_PPC
1683	>	static void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1684		{
1685	<	#if ASYNC_IRQ
1686	<	extern void HandleInterrupt(void);
1687	<	HandleInterrupt();
1685	>	machine_regs *r = MACHINE_REGISTERS(scp);
1686	>
1687	>	#ifdef USE_SDL_VIDEO
1688	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1689	>	SDL_PumpEvents();
1690		#endif
1299	–	}
1300	–	#else
1301	–	static void sigusr2_handler(int sig, sigcontext_struct *sc)
1302	–	{
1303	–	pt_regs *r = sc->regs;
1691
1692		// Do nothing if interrupts are disabled
1693		if (*(int32 *)XLM_IRQ_NEST > 0)
#	Line 1314 | Line 1701 | static void sigusr2_handler(int sig, sig
1701		case MODE_68K:
1702		// 68k emulator active, trigger 68k interrupt level 1
1703		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1704	<	r->ccr |= ntohl(kernel_data->v[0x674 >> 2]);
1704	>	r->cr() |= ntohl(kernel_data->v[0x674 >> 2]);
1705		break;
1706
1707		#if INTERRUPTS_IN_NATIVE_MODE
1708		case MODE_NATIVE:
1709		// 68k emulator inactive, in nanokernel?
1710	<	if (r->gpr[1] != KernelDataAddr) {
1710	>	if (r->gpr(1) != KernelDataAddr) {
1711	>
1712	>	// Set extra stack for nested interrupts
1713	>	sig_stack_acquire();
1714	>
1715		// Prepare for 68k interrupt level 1
1716		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1717		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) | ntohl(kernel_data->v[0x674 >> 2]));
1718
1719		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1720	<	atomic_add((int32 *)XLM_IRQ_NEST, 1);
1720	>	DisableInterrupt();
1721		if (ROMType == ROMTYPE_NEWWORLD)
1722		ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1723		else
1724		ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1725	+
1726	+	// Reset normal signal stack
1727	+	sig_stack_release();
1728		}
1729		break;
1730		#endif
#	Line 1341 | Line 1735 | static void sigusr2_handler(int sig, sig
1735		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1736
1737		// Set extra stack for SIGSEGV handler
1738	<	struct sigaltstack new_stack;
1345	<	new_stack.ss_sp = extra_stack;
1346	<	new_stack.ss_flags = 0;
1347	<	new_stack.ss_size = SIG_STACK_SIZE;
1348	<	sigaltstack(&new_stack, NULL);
1738	>	sig_stack_acquire();
1739		#if 1
1740		// Execute full 68k interrupt routine
1741		M68kRegisters r;
#	Line 1367 | Line 1757 | static void sigusr2_handler(int sig, sig
1757		if (InterruptFlags & INTFLAG_VIA) {
1758		ClearInterruptFlag(INTFLAG_VIA);
1759		ADBInterrupt();
1760	<	ExecutePPC(VideoVBL);
1760	>	ExecuteNative(NATIVE_VIDEO_VBL);
1761		}
1762		}
1763		#endif
1764		// Reset normal signal stack
1765	<	new_stack.ss_sp = sig_stack;
1376	<	new_stack.ss_flags = 0;
1377	<	new_stack.ss_size = SIG_STACK_SIZE;
1378	<	sigaltstack(&new_stack, NULL);
1765	>	sig_stack_release();
1766		}
1767		break;
1768		#endif
#	Line 1389 | Line 1776 | static void sigusr2_handler(int sig, sig
1776		*/
1777
1778		#if !EMULATED_PPC
1779	<	static void sigsegv_handler(int sig, sigcontext_struct *sc)
1779	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp)
1780		{
1781	<	pt_regs *r = sc->regs;
1781	>	machine_regs *r = MACHINE_REGISTERS(scp);
1782
1783		// Get effective address
1784	<	uint32 addr = r->dar;
1784	>	uint32 addr = r->dar();
1785
1786		#if ENABLE_VOSF
1787		// Handle screen fault.
1788		extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1789	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1789	>	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc()))
1790		return;
1791		#endif
1792
1793		num_segv++;
1794
1795	<	// Fault in Mac ROM or RAM?
1796	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1795	>	// Fault in Mac ROM or RAM or DR Cache?
1796	>	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));
1797		if (mac_fault) {
1798
1799		// "VM settings" during MacOS 8 installation
1800	<	if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1801	<	r->nip += 4;
1802	<	r->gpr[8] = 0;
1800	>	if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) {
1801	>	r->pc() += 4;
1802	>	r->gpr(8) = 0;
1803		return;
1804
1805		// MacOS 8.5 installation
1806	<	} else if (r->nip == ROM_BASE + 0x488140 && r->gpr[16] == 0xf8000000) {
1807	<	r->nip += 4;
1808	<	r->gpr[8] = 0;
1806	>	} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) {
1807	>	r->pc() += 4;
1808	>	r->gpr(8) = 0;
1809		return;
1810
1811		// MacOS 8 serial drivers on startup
1812	<	} else if (r->nip == ROM_BASE + 0x48e080 && (r->gpr[8] == 0xf3012002 || r->gpr[8] == 0xf3012000)) {
1813	<	r->nip += 4;
1814	<	r->gpr[8] = 0;
1812	>	} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1813	>	r->pc() += 4;
1814	>	r->gpr(8) = 0;
1815		return;
1816
1817		// MacOS 8.1 serial drivers on startup
1818	<	} else if (r->nip == ROM_BASE + 0x48c5e0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1819	<	r->nip += 4;
1818	>	} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1819	>	r->pc() += 4;
1820	>	return;
1821	>	} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1822	>	r->pc() += 4;
1823	>	return;
1824	>
1825	>	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
1826	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(16) == 0xf3012002 || r->gpr(16) == 0xf3012000)) {
1827	>	r->pc() += 4;
1828		return;
1829	<	} else if (r->nip == ROM_BASE + 0x4a10a0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1830	<	r->nip += 4;
1829	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1830	>	r->pc() += 4;
1831		return;
1832		}
1833
1834		// Get opcode and divide into fields
1835	<	uint32 opcode = *((uint32 *)r->nip);
1835	>	uint32 opcode = *((uint32 *)r->pc());
1836		uint32 primop = opcode >> 26;
1837		uint32 exop = (opcode >> 1) & 0x3ff;
1838		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1526 | Line 1921 | static void sigsegv_handler(int sig, sig
1921		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1922		case 45:        // sthu
1923		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1924	+	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1925	+	case 46:        // lmw
1926	+	if ((addr % 4) != 0) {
1927	+	uint32 ea = addr;
1928	+	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1929	+	for (int i = rd; i <= 31; i++) {
1930	+	r->gpr(i) = ReadMacInt32(ea);
1931	+	ea += 4;
1932	+	}
1933	+	r->pc() += 4;
1934	+	goto rti;
1935	+	}
1936	+	break;
1937	+	case 47:        // stmw
1938	+	if ((addr % 4) != 0) {
1939	+	uint32 ea = addr;
1940	+	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1941	+	for (int i = rd; i <= 31; i++) {
1942	+	WriteMacInt32(ea, r->gpr(i));
1943	+	ea += 4;
1944	+	}
1945	+	r->pc() += 4;
1946	+	goto rti;
1947	+	}
1948	+	break;
1949	+	#endif
1950		}
1951
1952	<	// Ignore ROM writes
1953	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1954	<	//                      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));
1952	>	// Ignore ROM writes (including to the zero page, which is read-only)
1953	>	if (transfer_type == TYPE_STORE &&
1954	>	((addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) ||
1955	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1956	>	//                      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()));
1957		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1958	<	r->gpr[ra] = addr;
1959	<	r->nip += 4;
1958	>	r->gpr(ra) = addr;
1959	>	r->pc() += 4;
1960		goto rti;
1961		}
1962
1963		// Ignore illegal memory accesses?
1964		if (PrefsFindBool("ignoresegv")) {
1965		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1966	<	r->gpr[ra] = addr;
1966	>	r->gpr(ra) = addr;
1967		if (transfer_type == TYPE_LOAD)
1968	<	r->gpr[rd] = 0;
1969	<	r->nip += 4;
1968	>	r->gpr(rd) = 0;
1969	>	r->pc() += 4;
1970		goto rti;
1971		}
1972
#	Line 1551 | Line 1974 | static void sigsegv_handler(int sig, sig
1974		if (!PrefsFindBool("nogui")) {
1975		char str[256];
1976		if (transfer_type == TYPE_LOAD || transfer_type == TYPE_STORE)
1977	<	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]);
1977	>	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));
1978		else
1979	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1979	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1980		ErrorAlert(str);
1981		QuitEmulator();
1982		return;
#	Line 1561 | Line 1984 | static void sigsegv_handler(int sig, sig
1984		}
1985
1986		// For all other errors, jump into debugger (sort of...)
1987	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1988		if (!ready_for_signals) {
1989	<	printf("SIGSEGV\n");
1990	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1989	>	printf("%s\n");
1990	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1991		printf(
1992		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1993		"  xer %08lx     cr %08lx  \n"
#	Line 1575 | Line 1999 | static void sigsegv_handler(int sig, sig
1999		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
2000		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
2001		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
2002	<	r->nip, r->link, r->ctr, r->msr,
2003	<	r->xer, r->ccr,
2004	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
2005	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
2006	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
2007	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
2008	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
2009	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
2010	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
2011	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
2002	>	crash_reason,
2003	>	r->pc(), r->lr(), r->ctr(), r->msr(),
2004	>	r->xer(), r->cr(),
2005	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
2006	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
2007	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
2008	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
2009	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
2010	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
2011	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
2012	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
2013		exit(1);
2014		QuitEmulator();
2015		return;
2016		} else {
2017		// We crashed. Save registers, tell tick thread and loop forever
2018	<	sigsegv_regs = *(sigregs *)r;
2018	>	build_sigregs(&sigsegv_regs, r);
2019		emul_thread_fatal = true;
2020		for (;;) ;
2021		}
#	Line 1602 | Line 2027 | rti:;
2027		*  SIGILL handler
2028		*/
2029
2030	<	static void sigill_handler(int sig, sigcontext_struct *sc)
2030	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp)
2031		{
2032	<	pt_regs *r = sc->regs;
2032	>	machine_regs *r = MACHINE_REGISTERS(scp);
2033		char str[256];
2034
2035		// Fault in Mac ROM or RAM?
2036	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
2036	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
2037		if (mac_fault) {
2038
2039		// Get opcode and divide into fields
2040	<	uint32 opcode = *((uint32 *)r->nip);
2040	>	uint32 opcode = *((uint32 *)r->pc());
2041		uint32 primop = opcode >> 26;
2042		uint32 exop = (opcode >> 1) & 0x3ff;
2043		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1623 | Line 2048 | static void sigill_handler(int sig, sigc
2048		switch (primop) {
2049		case 9:         // POWER instructions
2050		case 22:
2051	<	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->nip, r->gpr[1], opcode);
2051	>	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode);
2052		ErrorAlert(str);
2053		QuitEmulator();
2054		return;
#	Line 1631 | Line 2056 | power_inst:            sprintf(str, GetString(STR_
2056		case 31:
2057		switch (exop) {
2058		case 83:        // mfmsr
2059	<	r->gpr[rd] = 0xf072;
2060	<	r->nip += 4;
2059	>	r->gpr(rd) = 0xf072;
2060	>	r->pc() += 4;
2061		goto rti;
2062
2063		case 210:       // mtsr
2064		case 242:       // mtsrin
2065		case 306:       // tlbie
2066	<	r->nip += 4;
2066	>	r->pc() += 4;
2067		goto rti;
2068
2069		case 339: {     // mfspr
#	Line 1654 | Line 2079 | power_inst:            sprintf(str, GetString(STR_
2079		case 957:       // PMC3
2080		case 958:       // PMC4
2081		case 959:       // SDA
2082	<	r->nip += 4;
2082	>	r->pc() += 4;
2083		goto rti;
2084		case 25:        // SDR1
2085	<	r->gpr[rd] = 0xdead001f;
2086	<	r->nip += 4;
2085	>	r->gpr(rd) = 0xdead001f;
2086	>	r->pc() += 4;
2087		goto rti;
2088		case 287:       // PVR
2089	<	r->gpr[rd] = PVR;
2090	<	r->nip += 4;
2089	>	r->gpr(rd) = PVR;
2090	>	r->pc() += 4;
2091		goto rti;
2092		}
2093		break;
#	Line 1698 | Line 2123 | power_inst:            sprintf(str, GetString(STR_
2123		case 957:       // PMC3
2124		case 958:       // PMC4
2125		case 959:       // SDA
2126	<	r->nip += 4;
2126	>	r->pc() += 4;
2127		goto rti;
2128		}
2129		break;
#	Line 1717 | Line 2142 | power_inst:            sprintf(str, GetString(STR_
2142
2143		// In GUI mode, show error alert
2144		if (!PrefsFindBool("nogui")) {
2145	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
2145	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
2146		ErrorAlert(str);
2147		QuitEmulator();
2148		return;
#	Line 1725 | Line 2150 | power_inst:            sprintf(str, GetString(STR_
2150		}
2151
2152		// For all other errors, jump into debugger (sort of...)
2153	+	crash_reason = "SIGILL";
2154		if (!ready_for_signals) {
2155	<	printf("SIGILL\n");
2156	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
2155	>	printf("%s\n");
2156	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
2157		printf(
2158		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
2159		"  xer %08lx     cr %08lx  \n"
#	Line 1739 | Line 2165 | power_inst:            sprintf(str, GetString(STR_
2165		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
2166		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
2167		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
2168	<	r->nip, r->link, r->ctr, r->msr,
2169	<	r->xer, r->ccr,
2170	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
2171	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
2172	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
2173	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
2174	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
2175	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
2176	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
2177	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
2168	>	crash_reason,
2169	>	r->pc(), r->lr(), r->ctr(), r->msr(),
2170	>	r->xer(), r->cr(),
2171	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
2172	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
2173	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
2174	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
2175	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
2176	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
2177	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
2178	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
2179		exit(1);
2180		QuitEmulator();
2181		return;
2182		} else {
2183		// We crashed. Save registers, tell tick thread and loop forever
2184	<	sigsegv_regs = *(sigregs *)r;
2184	>	build_sigregs(&sigsegv_regs, r);
2185		emul_thread_fatal = true;
2186		for (;;) ;
2187		}
#	Line 1764 | Line 2191 | rti:;
2191
2192
2193		/*
2194	+	*  Helpers to share 32-bit addressable data with MacOS
2195	+	*/
2196	+
2197	+	bool SheepMem::Init(void)
2198	+	{
2199	+	// Size of a native page
2200	+	page_size = getpagesize();
2201	+
2202	+	// Allocate SheepShaver globals
2203	+	if (vm_acquire_fixed((char *)base, size) < 0)
2204	+	return false;
2205	+
2206	+	// Allocate page with all bits set to 0
2207	+	zero_page = base + size;
2208	+	if (vm_acquire_fixed((char *)zero_page, page_size) < 0)
2209	+	return false;
2210	+	memset((char *)zero_page, 0, page_size);
2211	+	if (vm_protect((char *)zero_page, page_size, VM_PAGE_READ) < 0)
2212	+	return false;
2213	+
2214	+	#if EMULATED_PPC
2215	+	// Allocate alternate stack for PowerPC interrupt routine
2216	+	sig_stack = zero_page + page_size;
2217	+	if (vm_acquire_fixed((char *)sig_stack, SIG_STACK_SIZE) < 0)
2218	+	return false;
2219	+	#endif
2220	+
2221	+	top = base + size;
2222	+	return true;
2223	+	}
2224	+
2225	+	void SheepMem::Exit(void)
2226	+	{
2227	+	if (top) {
2228	+	// Delete SheepShaver globals
2229	+	vm_release((void *)base, size);
2230	+
2231	+	// Delete zero page
2232	+	vm_release((void *)zero_page, page_size);
2233	+
2234	+	#if EMULATED_PPC
2235	+	// Delete alternate stack for PowerPC interrupt routine
2236	+	vm_release((void *)sig_stack, SIG_STACK_SIZE);
2237	+	#endif
2238	+	}
2239	+	}
2240	+
2241	+
2242	+	/*
2243		*  Display alert
2244		*/
2245
#	Line 1812 | Line 2288 | void display_alert(int title_id, int pre
2288
2289		void ErrorAlert(const char *text)
2290		{
2291	<	#ifdef ENABLE_GTK
2291	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2292		if (PrefsFindBool("nogui") || x_display == NULL) {
2293		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
2294		return;
#	Line 1831 | Line 2307 | void ErrorAlert(const char *text)
2307
2308		void WarningAlert(const char *text)
2309		{
2310	<	#ifdef ENABLE_GTK
2310	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2311		if (PrefsFindBool("nogui") || x_display == NULL) {
2312		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
2313		return;

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