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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 1.58 by gbeauche, 2005-01-30T21:48:20Z

#	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) 1997-2005 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 93 | Line 105
105		#include "xpram.h"
106		#include "timer.h"
107		#include "adb.h"
96	–	#include "sony.h"
97	–	#include "disk.h"
98	–	#include "cdrom.h"
99	–	#include "scsi.h"
108		#include "video.h"
101	–	#include "audio.h"
102	–	#include "ether.h"
103	–	#include "serial.h"
104	–	#include "clip.h"
105	–	#include "extfs.h"
109		#include "sys.h"
110		#include "macos_util.h"
111		#include "rom_patches.h"
#	Line 114 | Line 117
117		#include "debug.h"
118
119
120	+	#ifdef HAVE_DIRENT_H
121	+	#include <dirent.h>
122	+	#endif
123	+
124	+	#ifdef USE_SDL
125	+	#include <SDL.h>
126	+	#endif
127	+
128	+	#ifndef USE_SDL_VIDEO
129		#include <X11/Xlib.h>
130	+	#endif
131
132		#ifdef ENABLE_GTK
133		#include <gtk/gtk.h>
#	Line 131 | Line 144
144		#endif
145
146
147	+	// Enable emulation of unaligned lmw/stmw?
148	+	#define EMULATE_UNALIGNED_LOADSTORE_MULTIPLE 1
149	+
150		// Enable Execute68k() safety checks?
151		#define SAFE_EXEC_68K 0
152
#	Line 140 | Line 156
156		// Interrupts in native mode?
157		#define INTERRUPTS_IN_NATIVE_MODE 1
158
159	+	// Number of alternate stacks for signal handlers?
160	+	#define SIG_STACK_COUNT 4
161	+
162
163		// Constants
164		const char ROM_FILE_NAME[] = "ROM";
165		const char ROM_FILE_NAME2[] = "Mac OS ROM";
166
167	<	const uint32 RAM_BASE = 0x20000000;                     // Base address of RAM
167	>	#if REAL_ADDRESSING
168	>	const uintptr RAM_BASE = 0x20000000;            // Base address of RAM
169	>	#else
170	>	// FIXME: needs to be >= 0x04000000
171	>	const uintptr RAM_BASE = 0x10000000;            // Base address of RAM
172	>	#endif
173		const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
174
175
176		#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	–
177		struct sigregs {
178	<	elf_gregset_t   gp_regs;                                // Identical to pt_regs
179	<	double                  fp_regs[ELF_NFPREG];    // f0..f31 and fpsrc
180	<	//more (uninteresting) stuff following here
178	>	uint32 nip;
179	>	uint32 link;
180	>	uint32 ctr;
181	>	uint32 msr;
182	>	uint32 xer;
183	>	uint32 ccr;
184	>	uint32 gpr[32];
185	>	};
186	>
187	>	#if defined(__linux__)
188	>	#include <sys/ucontext.h>
189	>	#define MACHINE_REGISTERS(scp)  ((machine_regs *)(((ucontext_t *)scp)->uc_mcontext.regs))
190	>
191	>	struct machine_regs : public pt_regs
192	>	{
193	>	u_long & cr()                           { return pt_regs::ccr; }
194	>	uint32 cr() const                       { return pt_regs::ccr; }
195	>	uint32 lr() const                       { return pt_regs::link; }
196	>	uint32 ctr() const                      { return pt_regs::ctr; }
197	>	uint32 xer() const                      { return pt_regs::xer; }
198	>	uint32 msr() const                      { return pt_regs::msr; }
199	>	uint32 dar() const                      { return pt_regs::dar; }
200	>	u_long & pc()                           { return pt_regs::nip; }
201	>	uint32 pc() const                       { return pt_regs::nip; }
202	>	u_long & gpr(int i)                     { return pt_regs::gpr[i]; }
203	>	uint32 gpr(int i) const         { return pt_regs::gpr[i]; }
204	>	};
205	>	#endif
206	>
207	>	#if defined(__APPLE__) && defined(__MACH__)
208	>	#include <sys/signal.h>
209	>	extern "C" int sigaltstack(const struct sigaltstack *ss, struct sigaltstack *oss);
210	>
211	>	#include <sys/ucontext.h>
212	>	#define MACHINE_REGISTERS(scp)  ((machine_regs *)(((ucontext_t *)scp)->uc_mcontext))
213	>
214	>	struct machine_regs : public mcontext
215	>	{
216	>	uint32 & cr()                           { return ss.cr; }
217	>	uint32 cr() const                       { return ss.cr; }
218	>	uint32 lr() const                       { return ss.lr; }
219	>	uint32 ctr() const                      { return ss.ctr; }
220	>	uint32 xer() const                      { return ss.xer; }
221	>	uint32 msr() const                      { return ss.srr1; }
222	>	uint32 dar() const                      { return es.dar; }
223	>	uint32 & pc()                           { return ss.srr0; }
224	>	uint32 pc() const                       { return ss.srr0; }
225	>	uint32 & gpr(int i)                     { return (&ss.r0)[i]; }
226	>	uint32 gpr(int i) const         { return (&ss.r0)[i]; }
227		};
228		#endif
229
230	+	static void build_sigregs(sigregs *srp, machine_regs *mrp)
231	+	{
232	+	srp->nip = mrp->pc();
233	+	srp->link = mrp->lr();
234	+	srp->ctr = mrp->ctr();
235	+	srp->msr = mrp->msr();
236	+	srp->xer = mrp->xer();
237	+	srp->ccr = mrp->cr();
238	+	for (int i = 0; i < 32; i++)
239	+	srp->gpr[i] = mrp->gpr(i);
240	+	}
241	+
242	+	static struct sigaltstack sig_stacks[SIG_STACK_COUNT];  // Stacks for signal handlers
243	+	static int sig_stack_id = 0;                                                    // Stack slot currently used
244	+
245	+	static inline void sig_stack_acquire(void)
246	+	{
247	+	if (++sig_stack_id == SIG_STACK_COUNT) {
248	+	printf("FATAL: signal stack overflow\n");
249	+	return;
250	+	}
251	+	sigaltstack(&sig_stacks[sig_stack_id], NULL);
252	+	}
253	+
254	+	static inline void sig_stack_release(void)
255	+	{
256	+	if (--sig_stack_id < 0) {
257	+	printf("FATAL: signal stack underflow\n");
258	+	return;
259	+	}
260	+	sigaltstack(&sig_stacks[sig_stack_id], NULL);
261	+	}
262	+	#endif
263	+
264
265		// Global variables (exported)
266		#if !EMULATED_PPC
#	Line 172 | Line 268 | void *TOC;                             // Small data pointer (r13
268		#endif
269		uint32 RAMBase;                 // Base address of Mac RAM
270		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
271		uint32 KernelDataAddr;  // Address of Kernel Data
272		uint32 BootGlobsAddr;   // Address of BootGlobs structure at top of Mac RAM
273	+	uint32 DRCacheAddr;             // Address of DR Cache
274		uint32 PVR;                             // Theoretical PVR
275		int64 CPUClockSpeed;    // Processor clock speed (Hz)
276		int64 BusClockSpeed;    // Bus clock speed (Hz)
277	+	int64 TimebaseSpeed;    // Timebase clock speed (Hz)
278	+	uint8 *RAMBaseHost;             // Base address of Mac RAM (host address space)
279	+	uint8 *ROMBaseHost;             // Base address of Mac ROM (host address space)
280
281
282		// Global variables
283	+	#ifndef USE_SDL_VIDEO
284		char *x_display_name = NULL;                            // X11 display name
285		Display *x_display = NULL;                                      // X11 display handle
286	+	#ifdef X11_LOCK_TYPE
287	+	X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock
288	+	#endif
289	+	#endif
290
291		static int zero_fd = 0;                                         // FD of /dev/zero
190	–	static bool sheep_area_mapped = false;          // Flag: SheepShaver data area mmap()ed
292		static bool lm_area_mapped = false;                     // Flag: Low Memory area mmap()ped
293		static int kernel_area = -1;                            // SHM ID of Kernel Data area
294		static bool rom_area_mapped = false;            // Flag: Mac ROM mmap()ped
295		static bool ram_area_mapped = false;            // Flag: Mac RAM mmap()ped
296	+	static bool dr_cache_area_mapped = false;       // Flag: Mac DR Cache mmap()ped
297	+	static bool dr_emulator_area_mapped = false;// Flag: Mac DR Emulator mmap()ped
298		static KernelData *kernel_data;                         // Pointer to Kernel Data
299		static EmulatorData *emulator_data;
300
301		static uint8 last_xpram[XPRAM_SIZE];            // Buffer for monitoring XPRAM changes
302
303		static bool nvram_thread_active = false;        // Flag: NVRAM watchdog installed
304	+	static volatile bool nvram_thread_cancel;       // Flag: Cancel NVRAM thread
305		static pthread_t nvram_thread;                          // NVRAM watchdog
306		static bool tick_thread_active = false;         // Flag: MacOS thread installed
307	+	static volatile bool tick_thread_cancel;        // Flag: Cancel 60Hz thread
308		static pthread_t tick_thread;                           // 60Hz thread
309		static pthread_t emul_thread;                           // MacOS thread
310
#	Line 207 | Line 312 | static bool ready_for_signals = false;
312		static int64 num_segv = 0;                                      // Number of handled SEGV signals
313
314		static struct sigaction sigusr2_action;         // Interrupt signal (of emulator thread)
315	<	#if !EMULATED_PPC
315	>	#if EMULATED_PPC
316	>	static uintptr sig_stack = 0;                           // Stack for PowerPC interrupt routine
317	>	#else
318		static struct sigaction sigsegv_action;         // Data access exception signal (of emulator thread)
319		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
320		static bool emul_thread_fatal = false;          // Flag: MacOS thread crashed, tick thread shall dump debug output
321		static sigregs sigsegv_regs;                            // Register dump when crashed
322	+	static const char *crash_reason = NULL;         // Reason of the crash (SIGSEGV, SIGBUS, SIGILL)
323		#endif
324
325	+	uint32  SheepMem::page_size;                            // Size of a native page
326	+	uintptr SheepMem::zero_page = 0;                        // Address of ro page filled in with zeros
327	+	uintptr SheepMem::base = 0x60000000;            // Address of SheepShaver data
328	+	uintptr SheepMem::proc;                                         // Bottom address of SheepShave procedures
329	+	uintptr SheepMem::data;                                         // Top of SheepShaver data (stack like storage)
330	+
331
332		// Prototypes
333	+	static bool kernel_data_init(void);
334	+	static void kernel_data_exit(void);
335		static void Quit(void);
336		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 238 | Line 352 | static void sigill_handler(int sig, sigc
352		#if !EMULATED_PPC
353		extern "C" void *get_toc(void);
354		extern "C" void *get_sp(void);
355	<	extern "C" void flush_icache_range(void *start, void *end);
355	>	extern "C" void flush_icache_range(uint32 start, uint32 end);
356		extern "C" void jump_to_rom(uint32 entry, uint32 context);
357		extern "C" void quit_emulator(void);
358		extern "C" void execute_68k(uint32 pc, M68kRegisters *r);
#	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 292 | Line 416 | int atomic_or(int *var, int v)
416
417
418		/*
419	+	*  Memory management helpers
420	+	*/
421	+
422	+	static inline int vm_mac_acquire(uint32 addr, uint32 size)
423	+	{
424	+	return vm_acquire_fixed(Mac2HostAddr(addr), size);
425	+	}
426	+
427	+	static inline int vm_mac_release(uint32 addr, uint32 size)
428	+	{
429	+	return vm_release(Mac2HostAddr(addr), size);
430	+	}
431	+
432	+
433	+	/*
434		*  Main program
435		*/
436
#	Line 307 | Line 446 | static void usage(const char *prg_name)
446		int main(int argc, char **argv)
447		{
448		char str[256];
310	–	uint32 *boot_globs;
311	–	int16 i16;
449		int rom_fd;
450		FILE *proc_file;
451		const char *rom_path;
#	Line 342 | Line 479 | int main(int argc, char **argv)
479		for (int i=1; i<argc; i++) {
480		if (strcmp(argv[i], "--help") == 0) {
481		usage(argv[0]);
482	+	#ifndef USE_SDL_VIDEO
483		} else if (strcmp(argv[i], "--display") == 0) {
484		i++;
485		if (i < argc)
486		x_display_name = strdup(argv[i]);
487	+	#endif
488		} else if (argv[i][0] == '-') {
489		fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
490		usage(argv[0]);
491		}
492		}
493
494	+	#ifdef USE_SDL
495	+	// Initialize SDL system
496	+	int sdl_flags = 0;
497	+	#ifdef USE_SDL_VIDEO
498	+	sdl_flags |= SDL_INIT_VIDEO;
499	+	#endif
500	+	#ifdef USE_SDL_AUDIO
501	+	sdl_flags |= SDL_INIT_AUDIO;
502	+	#endif
503	+	assert(sdl_flags != 0);
504	+	if (SDL_Init(sdl_flags) == -1) {
505	+	char str[256];
506	+	sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError());
507	+	ErrorAlert(str);
508	+	goto quit;
509	+	}
510	+	atexit(SDL_Quit);
511	+	#endif
512	+
513	+	#ifndef USE_SDL_VIDEO
514		// Open display
515		x_display = XOpenDisplay(x_display_name);
516		if (x_display == NULL) {
#	Line 365 | Line 524 | int main(int argc, char **argv)
524		// Fork out, so we can return from fullscreen mode when things get ugly
525		XF86DGAForkApp(DefaultScreen(x_display));
526		#endif
527	+	#endif
528
529		#ifdef ENABLE_MON
530		// Initialize mon
531		mon_init();
532		#endif
533
534	+	#if !EMULATED_PPC
535	+	// Create and install stacks for signal handlers
536	+	for (int i = 0; i < SIG_STACK_COUNT; i++) {
537	+	void *sig_stack = malloc(SIG_STACK_SIZE);
538	+	D(bug("Signal stack %d at %p\n", i, sig_stack));
539	+	if (sig_stack == NULL) {
540	+	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
541	+	goto quit;
542	+	}
543	+	sig_stacks[i].ss_sp = sig_stack;
544	+	sig_stacks[i].ss_flags = 0;
545	+	sig_stacks[i].ss_size = SIG_STACK_SIZE;
546	+	}
547	+	sig_stack_id = 0;
548	+	if (sigaltstack(&sig_stacks[0], NULL) < 0) {
549	+	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
550	+	ErrorAlert(str);
551	+	goto quit;
552	+	}
553	+	#endif
554	+
555	+	#if !EMULATED_PPC
556	+	// Install SIGSEGV and SIGBUS handlers
557	+	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
558	+	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
559	+	sigsegv_action.sa_sigaction = sigsegv_handler;
560	+	sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
561	+	#ifdef HAVE_SIGNAL_SA_RESTORER
562	+	sigsegv_action.sa_restorer = NULL;
563	+	#endif
564	+	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
565	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
566	+	ErrorAlert(str);
567	+	goto quit;
568	+	}
569	+	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
570	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
571	+	ErrorAlert(str);
572	+	goto quit;
573	+	}
574	+	#else
575	+	// Install SIGSEGV handler for CPU emulator
576	+	if (!sigsegv_install_handler(sigsegv_handler)) {
577	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
578	+	ErrorAlert(str);
579	+	goto quit;
580	+	}
581	+	#endif
582	+
583	+	// Initialize VM system
584	+	vm_init();
585	+
586		// Get system info
587		PVR = 0x00040000;                       // Default: 604
588		CPUClockSpeed = 100000000;      // Default: 100MHz
589		BusClockSpeed = 100000000;      // Default: 100MHz
590	<	#if !EMULATED_PPC
590	>	TimebaseSpeed =  25000000;      // Default:  25MHz
591	>	#if EMULATED_PPC
592	>	PVR = 0x000c0000;                       // Default: 7400 (with AltiVec)
593	>	#elif defined(__APPLE__) && defined(__MACH__)
594	>	proc_file = popen("ioreg -c IOPlatformDevice", "r");
595	>	if (proc_file) {
596	>	char line[256];
597	>	bool powerpc_node = false;
598	>	while (fgets(line, sizeof(line) - 1, proc_file)) {
599	>	// Read line
600	>	int len = strlen(line);
601	>	if (len == 0)
602	>	continue;
603	>	line[len - 1] = 0;
604	>
605	>	// Parse line
606	>	if (strstr(line, "o PowerPC,"))
607	>	powerpc_node = true;
608	>	else if (powerpc_node) {
609	>	uint32 value;
610	>	char head[256];
611	>	if (sscanf(line, "%[ |]\"cpu-version\" = <%x>", head, &value) == 2)
612	>	PVR = value;
613	>	else if (sscanf(line, "%[ |]\"clock-frequency\" = <%x>", head, &value) == 2)
614	>	CPUClockSpeed = value;
615	>	else if (sscanf(line, "%[ |]\"bus-frequency\" = <%x>", head, &value) == 2)
616	>	BusClockSpeed = value;
617	>	else if (sscanf(line, "%[ |]\"timebase-frequency\" = <%x>", head, &value) == 2)
618	>	TimebaseSpeed = value;
619	>	else if (strchr(line, '}'))
620	>	powerpc_node = false;
621	>	}
622	>	}
623	>	fclose(proc_file);
624	>	} else {
625	>	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
626	>	WarningAlert(str);
627	>	}
628	>	#else
629		proc_file = fopen("/proc/cpuinfo", "r");
630		if (proc_file) {
631	+	// CPU specs from Linux kernel
632	+	// TODO: make it more generic with features (e.g. AltiVec) and
633	+	// cache information and friends for NameRegistry
634	+	static const struct {
635	+	uint32 pvr_mask;
636	+	uint32 pvr_value;
637	+	const char *cpu_name;
638	+	}
639	+	cpu_specs[] = {
640	+	{ 0xffff0000, 0x00010000, "601" },
641	+	{ 0xffff0000, 0x00030000, "603" },
642	+	{ 0xffff0000, 0x00060000, "603e" },
643	+	{ 0xffff0000, 0x00070000, "603ev" },
644	+	{ 0xffff0000, 0x00040000, "604" },
645	+	{ 0xfffff000, 0x00090000, "604e" },
646	+	{ 0xffff0000, 0x00090000, "604r" },
647	+	{ 0xffff0000, 0x000a0000, "604ev" },
648	+	{ 0xffffffff, 0x00084202, "740/750" },
649	+	{ 0xfffff000, 0x00083000, "745/755" },
650	+	{ 0xfffffff0, 0x00080100, "750CX" },
651	+	{ 0xfffffff0, 0x00082200, "750CX" },
652	+	{ 0xfffffff0, 0x00082210, "750CXe" },
653	+	{ 0xffffff00, 0x70000100, "750FX" },
654	+	{ 0xffffffff, 0x70000200, "750FX" },
655	+	{ 0xffff0000, 0x70000000, "750FX" },
656	+	{ 0xffff0000, 0x70020000, "750GX" },
657	+	{ 0xffff0000, 0x00080000, "740/750" },
658	+	{ 0xffffffff, 0x000c1101, "7400 (1.1)" },
659	+	{ 0xffff0000, 0x000c0000, "7400" },
660	+	{ 0xffff0000, 0x800c0000, "7410" },
661	+	{ 0xffffffff, 0x80000200, "7450" },
662	+	{ 0xffffffff, 0x80000201, "7450" },
663	+	{ 0xffff0000, 0x80000000, "7450" },
664	+	{ 0xffffff00, 0x80010100, "7455" },
665	+	{ 0xffffffff, 0x80010200, "7455" },
666	+	{ 0xffff0000, 0x80010000, "7455" },
667	+	{ 0xffff0000, 0x80020000, "7457" },
668	+	{ 0xffff0000, 0x80030000, "7447A" },
669	+	{ 0x7fff0000, 0x00810000, "82xx" },
670	+	{ 0x7fff0000, 0x00820000, "8280" },
671	+	{ 0xffff0000, 0x00400000, "Power3 (630)" },
672	+	{ 0xffff0000, 0x00410000, "Power3 (630+)" },
673	+	{ 0xffff0000, 0x00360000, "I-star" },
674	+	{ 0xffff0000, 0x00370000, "S-star" },
675	+	{ 0xffff0000, 0x00350000, "Power4" },
676	+	{ 0xffff0000, 0x00390000, "PPC970" },
677	+	{ 0, 0, 0 }
678	+	};
679	+
680		char line[256];
681		while(fgets(line, 255, proc_file)) {
682		// Read line
#	Line 389 | Line 688 | int main(int argc, char **argv)
688		// Parse line
689		int i;
690		char value[256];
691	<	if (sscanf(line, "cpu : %s", value) == 1) {
692	<	if (strcmp(value, "601") == 0)
693	<	PVR = 0x00010000;
694	<	else if (strcmp(value, "603") == 0)
695	<	PVR = 0x00030000;
696	<	else if (strcmp(value, "604") == 0)
697	<	PVR = 0x00040000;
698	<	else if (strcmp(value, "603e") == 0)
699	<	PVR = 0x00060000;
700	<	else if (strcmp(value, "603ev") == 0)
701	<	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
691	>	if (sscanf(line, "cpu : %[0-9A-Za-a]", value) == 1) {
692	>	// Search by name
693	>	const char *cpu_name = NULL;
694	>	for (int i = 0; cpu_specs[i].pvr_mask != 0; i++) {
695	>	if (strcmp(cpu_specs[i].cpu_name, value) == 0) {
696	>	cpu_name = cpu_specs[i].cpu_name;
697	>	PVR = cpu_specs[i].pvr_value;
698	>	break;
699	>	}
700	>	}
701	>	if (cpu_name == NULL)
702		printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
703	+	else
704	+	printf("Found a PowerPC %s processor\n", cpu_name);
705		}
706		if (sscanf(line, "clock : %dMHz", &i) == 1)
707		CPUClockSpeed = BusClockSpeed = i * 1000000;
#	Line 421 | Line 711 | int main(int argc, char **argv)
711		sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
712		WarningAlert(str);
713		}
714	+
715	+	// Get actual bus frequency
716	+	proc_file = fopen("/proc/device-tree/clock-frequency", "r");
717	+	if (proc_file) {
718	+	union { uint8 b[4]; uint32 l; } value;
719	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
720	+	BusClockSpeed = value.l;
721	+	fclose(proc_file);
722	+	}
723	+
724	+	// Get actual timebase frequency
725	+	TimebaseSpeed = BusClockSpeed / 4;
726	+	DIR *cpus_dir;
727	+	if ((cpus_dir = opendir("/proc/device-tree/cpus")) != NULL) {
728	+	struct dirent *cpu_entry;
729	+	while ((cpu_entry = readdir(cpus_dir)) != NULL) {
730	+	if (strstr(cpu_entry->d_name, "PowerPC,") == cpu_entry->d_name) {
731	+	char timebase_freq_node[256];
732	+	sprintf(timebase_freq_node, "/proc/device-tree/cpus/%s/timebase-frequency", cpu_entry->d_name);
733	+	proc_file = fopen(timebase_freq_node, "r");
734	+	if (proc_file) {
735	+	union { uint8 b[4]; uint32 l; } value;
736	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
737	+	TimebaseSpeed = value.l;
738	+	fclose(proc_file);
739	+	}
740	+	}
741	+	}
742	+	closedir(cpus_dir);
743	+	}
744		#endif
745	+	// Remap any newer G4/G5 processor to plain G4 for compatibility
746	+	switch (PVR >> 16) {
747	+	case 0x8000:                            // 7450
748	+	case 0x8001:                            // 7455
749	+	case 0x8002:                            // 7457
750	+	case 0x0039:                            //  970
751	+	PVR = 0x000c0000;               // 7400
752	+	break;
753	+	}
754		D(bug("PVR: %08x (assumed)\n", PVR));
755
756		// Init system routines
#	Line 445 | Line 774 | int main(int argc, char **argv)
774		goto quit;
775		}
776
777	+	#ifndef PAGEZERO_HACK
778		// Create Low Memory area (0x0000..0x3000)
779	<	if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
779	>	if (vm_mac_acquire(0, 0x3000) < 0) {
780		sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
781		ErrorAlert(str);
782		goto quit;
783		}
784		lm_area_mapped = true;
785	+	#endif
786
787		// Create areas for Kernel Data
788	<	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
789	<	if (kernel_area == -1) {
790	<	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
788	>	if (!kernel_data_init())
789	>	goto quit;
790	>	kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE);
791	>	emulator_data = &kernel_data->ed;
792	>	KernelDataAddr = KERNEL_DATA_BASE;
793	>	D(bug("Kernel Data at %p (%08x)\n", kernel_data, KERNEL_DATA_BASE));
794	>	D(bug("Emulator Data at %p (%08x)\n", emulator_data, KERNEL_DATA_BASE + offsetof(KernelData, ed)));
795	>
796	>	// Create area for DR Cache
797	>	if (vm_mac_acquire(DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) {
798	>	sprintf(str, GetString(STR_DR_EMULATOR_MMAP_ERR), strerror(errno));
799		ErrorAlert(str);
800		goto quit;
801		}
802	<	if (shmat(kernel_area, (void *)KERNEL_DATA_BASE, 0) < 0) {
803	<	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
802	>	dr_emulator_area_mapped = true;
803	>	if (vm_mac_acquire(DR_CACHE_BASE, DR_CACHE_SIZE) < 0) {
804	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
805		ErrorAlert(str);
806		goto quit;
807		}
808	<	if (shmat(kernel_area, (void *)KERNEL_DATA2_BASE, 0) < 0) {
809	<	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
808	>	dr_cache_area_mapped = true;
809	>	#if !EMULATED_PPC
810	>	if (vm_protect((char *)DR_CACHE_BASE, DR_CACHE_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
811	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
812		ErrorAlert(str);
813		goto quit;
814		}
815	<	kernel_data = (KernelData *)0x68ffe000;
816	<	emulator_data = &kernel_data->ed;
817	<	KernelDataAddr = (uint32)kernel_data;
476	<	D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
815	>	#endif
816	>	DRCacheAddr = DR_CACHE_BASE;
817	>	D(bug("DR Cache at %p\n", DRCacheAddr));
818
819		// Create area for SheepShaver data
820	<	if (vm_acquire_fixed((char *)SHEEP_BASE, SHEEP_SIZE) < 0) {
820	>	if (!SheepMem::Init()) {
821		sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
822		ErrorAlert(str);
823		goto quit;
824		}
484	–	SheepStack1Base = SHEEP_BASE + 0x10000;
485	–	SheepStack2Base = SheepStack1Base + 0x10000;
486	–	SheepThunksBase = SheepStack2Base + 0x1000;
487	–	sheep_area_mapped = true;
825
826		// Create area for Mac ROM
827	<	if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
827	>	if (vm_mac_acquire(ROM_BASE, ROM_AREA_SIZE) < 0) {
828		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
829		ErrorAlert(str);
830		goto quit;
831		}
832	<	#if !EMULATED_PPC || defined(__powerpc__)
833	<	if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
832	>	ROMBaseHost = Mac2HostAddr(ROM_BASE);
833	>	#if !EMULATED_PPC
834	>	if (vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
835		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
836		ErrorAlert(str);
837		goto quit;
838		}
839		#endif
840		rom_area_mapped = true;
841	<	D(bug("ROM area at %08x\n", ROM_BASE));
841	>	D(bug("ROM area at %p (%08x)\n", ROMBaseHost, ROM_BASE));
842
843		// Create area for Mac RAM
844		RAMSize = PrefsFindInt32("ramsize");
#	Line 509 | Line 847 | int main(int argc, char **argv)
847		RAMSize = 8*1024*1024;
848		}
849
850	<	if (vm_acquire_fixed((char *)RAM_BASE, RAMSize) < 0) {
850	>	if (vm_mac_acquire(RAM_BASE, RAMSize) < 0) {
851		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
852		ErrorAlert(str);
853		goto quit;
854		}
855	+	RAMBaseHost = Mac2HostAddr(RAM_BASE);
856		#if !EMULATED_PPC
857	<	if (vm_protect((char *)RAM_BASE, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
857	>	if (vm_protect(RAMBaseHost, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
858		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
859		ErrorAlert(str);
860		goto quit;
#	Line 523 | Line 862 | int main(int argc, char **argv)
862		#endif
863		RAMBase = RAM_BASE;
864		ram_area_mapped = true;
865	<	D(bug("RAM area at %08x\n", RAMBase));
865	>	D(bug("RAM area at %p (%08x)\n", RAMBaseHost, RAMBase));
866
867		if (RAMBase > ROM_BASE) {
868		ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR));
#	Line 559 | Line 898 | int main(int argc, char **argv)
898		}
899		delete[] rom_tmp;
900
901	<	// Load NVRAM
902	<	XPRAMInit();
564	<
565	<	// Set boot volume
566	<	i16 = PrefsFindInt32("bootdrive");
567	<	XPRAM[0x1378] = i16 >> 8;
568	<	XPRAM[0x1379] = i16 & 0xff;
569	<	i16 = PrefsFindInt32("bootdriver");
570	<	XPRAM[0x137a] = i16 >> 8;
571	<	XPRAM[0x137b] = i16 & 0xff;
572	<
573	<	// Create BootGlobs at top of Mac memory
574	<	memset((void *)(RAMBase + RAMSize - 4096), 0, 4096);
575	<	BootGlobsAddr = RAMBase + RAMSize - 0x1c;
576	<	boot_globs = (uint32 *)BootGlobsAddr;
577	<	boot_globs[-5] = htonl(RAMBase + RAMSize);      // MemTop
578	<	boot_globs[0] = htonl(RAMBase);                         // First RAM bank
579	<	boot_globs[1] = htonl(RAMSize);
580	<	boot_globs[2] = htonl((uint32)-1);                      // End of bank table
581	<
582	<	// Init drivers
583	<	SonyInit();
584	<	DiskInit();
585	<	CDROMInit();
586	<	SCSIInit();
587	<
588	<	// Init external file system
589	<	ExtFSInit();
590	<
591	<	// Init audio
592	<	AudioInit();
593	<
594	<	// Init network
595	<	EtherInit();
596	<
597	<	// Init serial ports
598	<	SerialInit();
599	<
600	<	// Init Time Manager
601	<	TimerInit();
602	<
603	<	// Init clipboard
604	<	ClipInit();
605	<
606	<	// Init video
607	<	if (!VideoInit())
608	<	goto quit;
609	<
610	<	// Install ROM patches
611	<	if (!PatchROM()) {
612	<	ErrorAlert(GetString(STR_UNSUPPORTED_ROM_TYPE_ERR));
901	>	// Initialize everything
902	>	if (!InitAll())
903		goto quit;
904	<	}
904	>	D(bug("Initialization complete\n"));
905
906		// Clear caches (as we loaded and patched code) and write protect ROM
907		#if !EMULATED_PPC
908	<	MakeExecutable(0, (void *)ROM_BASE, ROM_AREA_SIZE);
908	>	flush_icache_range(ROM_BASE, ROM_BASE + ROM_AREA_SIZE);
909		#endif
910	<	vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
621	<
622	<	// Initialize Kernel Data
623	<	memset(kernel_data, 0, sizeof(KernelData));
624	<	if (ROMType == ROMTYPE_NEWWORLD) {
625	<	static uint32 of_dev_tree[4] = {0, 0, 0, 0};
626	<	static uint8 vector_lookup_tbl[128];
627	<	static uint8 vector_mask_tbl[64];
628	<	memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
629	<	memset(vector_lookup_tbl, 0, 128);
630	<	memset(vector_mask_tbl, 0, 64);
631	<	kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
632	<	kernel_data->v[0xb84 >> 2] = htonl((uint32)of_dev_tree);        // OF device tree base
633	<	kernel_data->v[0xb90 >> 2] = htonl((uint32)vector_lookup_tbl);
634	<	kernel_data->v[0xb94 >> 2] = htonl((uint32)vector_mask_tbl);
635	<	kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE);                           // OpenPIC base
636	<	kernel_data->v[0xbb0 >> 2] = htonl(0);                                          // ADB base
637	<	kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
638	<	kernel_data->v[0xc24 >> 2] = htonl(RAMSize);
639	<	kernel_data->v[0xc30 >> 2] = htonl(RAMSize);
640	<	kernel_data->v[0xc34 >> 2] = htonl(RAMSize);
641	<	kernel_data->v[0xc38 >> 2] = htonl(0x00010020);
642	<	kernel_data->v[0xc3c >> 2] = htonl(0x00200001);
643	<	kernel_data->v[0xc40 >> 2] = htonl(0x00010000);
644	<	kernel_data->v[0xc50 >> 2] = htonl(RAMBase);
645	<	kernel_data->v[0xc54 >> 2] = htonl(RAMSize);
646	<	kernel_data->v[0xf60 >> 2] = htonl(PVR);
647	<	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed);
648	<	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed);
649	<	kernel_data->v[0xf6c >> 2] = htonl(CPUClockSpeed);
650	<	} else {
651	<	kernel_data->v[0xc80 >> 2] = htonl(RAMSize);
652	<	kernel_data->v[0xc84 >> 2] = htonl(RAMSize);
653	<	kernel_data->v[0xc90 >> 2] = htonl(RAMSize);
654	<	kernel_data->v[0xc94 >> 2] = htonl(RAMSize);
655	<	kernel_data->v[0xc98 >> 2] = htonl(0x00010020);
656	<	kernel_data->v[0xc9c >> 2] = htonl(0x00200001);
657	<	kernel_data->v[0xca0 >> 2] = htonl(0x00010000);
658	<	kernel_data->v[0xcb0 >> 2] = htonl(RAMBase);
659	<	kernel_data->v[0xcb4 >> 2] = htonl(RAMSize);
660	<	kernel_data->v[0xf80 >> 2] = htonl(PVR);
661	<	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed);
662	<	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed);
663	<	kernel_data->v[0xf8c >> 2] = htonl(CPUClockSpeed);
664	<	}
665	<
666	<	// Initialize extra low memory
667	<	D(bug("Initializing Low Memory...\n"));
668	<	memset(NULL, 0, 0x3000);
669	<	WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h'));                  // Signature to detect SheepShaver
670	<	WriteMacInt32(XLM_KERNEL_DATA, (uint32)kernel_data);                    // For trap replacement routines
671	<	WriteMacInt32(XLM_PVR, PVR);                                                                    // Theoretical PVR
672	<	WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed);                                    // For DriverServicesLib patch
673	<	WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN);                // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
674	<	#if EMULATED_PPC
675	<	WriteMacInt32(XLM_ETHER_INIT, POWERPC_NATIVE_OP_FUNC(NATIVE_ETHER_INIT));
676	<	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);
691	<	#endif
692	<	D(bug("Low Memory initialized\n"));
910	>	vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
911
912		// Start 60Hz thread
913	+	tick_thread_cancel = false;
914		tick_thread_active = (pthread_create(&tick_thread, NULL, tick_func, NULL) == 0);
915		D(bug("Tick thread installed (%ld)\n", tick_thread));
916
917		// Start NVRAM watchdog thread
918		memcpy(last_xpram, XPRAM, XPRAM_SIZE);
919	+	nvram_thread_cancel = false;
920		nvram_thread_active = (pthread_create(&nvram_thread, NULL, nvram_func, NULL) == 0);
921		D(bug("NVRAM thread installed (%ld)\n", nvram_thread));
922
923		#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	–
924		// Install SIGILL handler
925		sigemptyset(&sigill_action.sa_mask);    // Block interrupts during ILL handling
926		sigaddset(&sigill_action.sa_mask, SIGUSR2);
927	<	sigill_action.sa_handler = (__sighandler_t)sigill_handler;
928	<	sigill_action.sa_flags = SA_ONSTACK;
927	>	sigill_action.sa_sigaction = sigill_handler;
928	>	sigill_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
929	>	#ifdef HAVE_SIGNAL_SA_RESTORER
930		sigill_action.sa_restorer = NULL;
931	+	#endif
932		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
933		sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
934		ErrorAlert(str);
#	Line 751 | Line 936 | int main(int argc, char **argv)
936		}
937		#endif
938
939	+	#if !EMULATED_PPC
940		// Install interrupt signal handler
941		sigemptyset(&sigusr2_action.sa_mask);
942	<	sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
943	<	sigusr2_action.sa_flags = 0;
944	<	#if !EMULATED_PPC
759	<	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART;
760	<	#endif
942	>	sigusr2_action.sa_sigaction = sigusr2_handler;
943	>	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO;
944	>	#ifdef HAVE_SIGNAL_SA_RESTORER
945		sigusr2_action.sa_restorer = NULL;
946	+	#endif
947		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
948		sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
949		ErrorAlert(str);
950		goto quit;
951		}
952	+	#endif
953
954		// Get my thread ID and execute MacOS thread function
955		emul_thread = pthread_self();
#	Line 789 | Line 975 | static void Quit(void)
975
976		// Stop 60Hz thread
977		if (tick_thread_active) {
978	+	tick_thread_cancel = true;
979		pthread_cancel(tick_thread);
980		pthread_join(tick_thread, NULL);
981		}
982
983		// Stop NVRAM watchdog thread
984		if (nvram_thread_active) {
985	+	nvram_thread_cancel = true;
986		pthread_cancel(nvram_thread);
987		pthread_join(nvram_thread, NULL);
988		}
989
990		#if !EMULATED_PPC
991	<	// Uninstall SIGSEGV handler
991	>	// Uninstall SIGSEGV and SIGBUS handlers
992		sigemptyset(&sigsegv_action.sa_mask);
993		sigsegv_action.sa_handler = SIG_DFL;
994		sigsegv_action.sa_flags = 0;
995		sigaction(SIGSEGV, &sigsegv_action, NULL);
996	+	sigaction(SIGBUS, &sigsegv_action, NULL);
997
998		// Uninstall SIGILL handler
999		sigemptyset(&sigill_action.sa_mask);
1000		sigill_action.sa_handler = SIG_DFL;
1001		sigill_action.sa_flags = 0;
1002		sigaction(SIGILL, &sigill_action, NULL);
814	–	#endif
815	–
816	–	// Save NVRAM
817	–	XPRAMExit();
818	–
819	–	// Exit clipboard
820	–	ClipExit();
1003
1004	<	// Exit Time Manager
1005	<	TimerExit();
1006	<
1007	<	// Exit serial
1008	<	SerialExit();
1009	<
1010	<	// Exit network
829	<	EtherExit();
830	<
831	<	// Exit audio
832	<	AudioExit();
833	<
834	<	// Exit video
835	<	VideoExit();
1004	>	// Delete stacks for signal handlers
1005	>	for (int i = 0; i < SIG_STACK_COUNT; i++) {
1006	>	void *sig_stack = sig_stacks[i].ss_sp;
1007	>	if (sig_stack)
1008	>	free(sig_stack);
1009	>	}
1010	>	#endif
1011
1012	<	// Exit external file system
1013	<	ExtFSExit();
1012	>	// Deinitialize everything
1013	>	ExitAll();
1014
1015	<	// Exit drivers
1016	<	SCSIExit();
842	<	CDROMExit();
843	<	DiskExit();
844	<	SonyExit();
1015	>	// Delete SheepShaver globals
1016	>	SheepMem::Exit();
1017
1018		// Delete RAM area
1019		if (ram_area_mapped)
1020	<	vm_release((char *)RAM_BASE, RAMSize);
1020	>	vm_mac_release(RAM_BASE, RAMSize);
1021
1022		// Delete ROM area
1023		if (rom_area_mapped)
1024	<	vm_release((char *)ROM_BASE, ROM_AREA_SIZE);
1024	>	vm_mac_release(ROM_BASE, ROM_AREA_SIZE);
1025	>
1026	>	// Delete DR cache areas
1027	>	if (dr_emulator_area_mapped)
1028	>	vm_mac_release(DR_EMULATOR_BASE, DR_EMULATOR_SIZE);
1029	>	if (dr_cache_area_mapped)
1030	>	vm_mac_release(DR_CACHE_BASE, DR_CACHE_SIZE);
1031
1032		// Delete Kernel Data area
1033	<	if (kernel_area >= 0) {
856	<	shmdt((void *)KERNEL_DATA_BASE);
857	<	shmdt((void *)KERNEL_DATA2_BASE);
858	<	shmctl(kernel_area, IPC_RMID, NULL);
859	<	}
1033	>	kernel_data_exit();
1034
1035		// Delete Low Memory area
1036		if (lm_area_mapped)
1037	<	munmap((char *)0x0000, 0x3000);
1037	>	vm_mac_release(0, 0x3000);
1038
1039		// Close /dev/zero
1040		if (zero_fd > 0)
#	Line 878 | Line 1052 | static void Quit(void)
1052		#endif
1053
1054		// Close X11 server connection
1055	+	#ifndef USE_SDL_VIDEO
1056		if (x_display)
1057		XCloseDisplay(x_display);
1058	+	#endif
1059
1060		exit(0);
1061		}
1062
1063
1064		/*
1065	+	*  Initialize Kernel Data segments
1066	+	*/
1067	+
1068	+	#if defined(__CYGWIN__)
1069	+	#define WIN32_LEAN_AND_MEAN
1070	+	#include <windows.h>
1071	+
1072	+	static HANDLE kernel_handle;                            // Shared memory handle for Kernel Data
1073	+	static DWORD allocation_granule;                        // Minimum size of allocateable are (64K)
1074	+	static DWORD kernel_area_size;                          // Size of Kernel Data area
1075	+	#endif
1076	+
1077	+	static bool kernel_data_init(void)
1078	+	{
1079	+	char str[256];
1080	+	#ifdef _WIN32
1081	+	SYSTEM_INFO si;
1082	+	GetSystemInfo(&si);
1083	+	allocation_granule = si.dwAllocationGranularity;
1084	+	kernel_area_size = (KERNEL_AREA_SIZE + allocation_granule - 1) & -allocation_granule;
1085	+
1086	+	char rcs[10];
1087	+	LPVOID kernel_addr;
1088	+	kernel_handle = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, kernel_area_size, NULL);
1089	+	if (kernel_handle == NULL) {
1090	+	sprintf(rcs, "%d", GetLastError());
1091	+	sprintf(str, GetString(STR_KD_SHMGET_ERR), rcs);
1092	+	ErrorAlert(str);
1093	+	return false;
1094	+	}
1095	+	kernel_addr = (LPVOID)Mac2HostAddr(KERNEL_DATA_BASE & -allocation_granule);
1096	+	if (MapViewOfFileEx(kernel_handle, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, kernel_area_size, kernel_addr) != kernel_addr) {
1097	+	sprintf(rcs, "%d", GetLastError());
1098	+	sprintf(str, GetString(STR_KD_SHMAT_ERR), rcs);
1099	+	ErrorAlert(str);
1100	+	return false;
1101	+	}
1102	+	kernel_addr = (LPVOID)Mac2HostAddr(KERNEL_DATA2_BASE & -allocation_granule);
1103	+	if (MapViewOfFileEx(kernel_handle, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, kernel_area_size, kernel_addr) != kernel_addr) {
1104	+	sprintf(rcs, "%d", GetLastError());
1105	+	sprintf(str, GetString(STR_KD2_SHMAT_ERR), rcs);
1106	+	ErrorAlert(str);
1107	+	return false;
1108	+	}
1109	+	#else
1110	+	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
1111	+	if (kernel_area == -1) {
1112	+	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
1113	+	ErrorAlert(str);
1114	+	return false;
1115	+	}
1116	+	if (shmat(kernel_area, Mac2HostAddr(KERNEL_DATA_BASE), 0) < 0) {
1117	+	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
1118	+	ErrorAlert(str);
1119	+	return false;
1120	+	}
1121	+	if (shmat(kernel_area, Mac2HostAddr(KERNEL_DATA2_BASE), 0) < 0) {
1122	+	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
1123	+	ErrorAlert(str);
1124	+	return false;
1125	+	}
1126	+	#endif
1127	+	return true;
1128	+	}
1129	+
1130	+
1131	+	/*
1132	+	*  Deallocate Kernel Data segments
1133	+	*/
1134	+
1135	+	static void kernel_data_exit(void)
1136	+	{
1137	+	#ifdef _WIN32
1138	+	if (kernel_handle) {
1139	+	UnmapViewOfFile(Mac2HostAddr(KERNEL_DATA_BASE & -allocation_granule));
1140	+	UnmapViewOfFile(Mac2HostAddr(KERNEL_DATA2_BASE & -allocation_granule));
1141	+	CloseHandle(kernel_handle);
1142	+	}
1143	+	#else
1144	+	if (kernel_area >= 0) {
1145	+	shmdt(Mac2HostAddr(KERNEL_DATA_BASE));
1146	+	shmdt(Mac2HostAddr(KERNEL_DATA2_BASE));
1147	+	shmctl(kernel_area, IPC_RMID, NULL);
1148	+	}
1149	+	#endif
1150	+	}
1151	+
1152	+
1153	+	/*
1154		*  Jump into Mac ROM, start 680x0 emulator
1155		*/
1156
#	Line 954 | Line 1219 | void Execute68kTrap(uint16 trap, M68kReg
1219		uint16 proc[2] = {trap, M68K_RTS};
1220		Execute68k((uint32)proc, r);
1221		}
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	–	}
1222		#endif
1223
1224
#	Line 1027 | Line 1279 | void Dump68kRegs(M68kRegisters *r)
1279		*  Make code executable
1280		*/
1281
1282	<	void MakeExecutable(int dummy, void *start, uint32 length)
1282	>	void MakeExecutable(int dummy, uint32 start, uint32 length)
1283		{
1284	<	if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE)))
1284	>	if ((start >= ROM_BASE) && (start < (ROM_BASE + ROM_SIZE)))
1285		return;
1286		#if EMULATED_PPC
1287	<	FlushCodeCache((uintptr)start, (uintptr)start + length);
1287	>	FlushCodeCache(start, start + length);
1288		#else
1289	<	flush_icache_range(start, (void *)((uintptr)start + length));
1289	>	flush_icache_range(start, start + length);
1290		#endif
1291		}
1292
1293
1294		/*
1295	<	*  Patch things after system startup (gets called by disk driver accRun routine)
1295	>	*  NVRAM watchdog thread (saves NVRAM every minute)
1296		*/
1297
1298	<	void PatchAfterStartup(void)
1298	>	static void nvram_watchdog(void)
1299		{
1300	<	#if EMULATED_PPC
1301	<	ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1302	<	#else
1303	<	ExecutePPC(VideoInstallAccel);
1052	<	#endif
1053	<	InstallExtFS();
1300	>	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1301	>	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1302	>	SaveXPRAM();
1303	>	}
1304		}
1305
1056	–
1057	–	/*
1058	–	*  NVRAM watchdog thread (saves NVRAM every minute)
1059	–	*/
1060	–
1306		static void *nvram_func(void *arg)
1307		{
1308	<	struct timespec req = {60, 0};  // 1 minute
1309	<
1310	<	for (;;) {
1311	<	pthread_testcancel();
1067	<	nanosleep(&req, NULL);
1068	<	pthread_testcancel();
1069	<	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1070	<	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1071	<	SaveXPRAM();
1072	<	}
1308	>	while (!nvram_thread_cancel) {
1309	>	for (int i=0; i<60 && !nvram_thread_cancel; i++)
1310	>	Delay_usec(999999);             // Only wait 1 second so we quit promptly when nvram_thread_cancel becomes true
1311	>	nvram_watchdog();
1312		}
1313		return NULL;
1314		}
#	Line 1082 | Line 1321 | static void *nvram_func(void *arg)
1321		static void *tick_func(void *arg)
1322		{
1323		int tick_counter = 0;
1324	<	struct timespec req = {0, 16625000};
1324	>	uint64 start = GetTicks_usec();
1325	>	int64 ticks = 0;
1326	>	uint64 next = GetTicks_usec();
1327
1328	<	for (;;) {
1328	>	while (!tick_thread_cancel) {
1329
1330		// Wait
1331	<	nanosleep(&req, NULL);
1331	>	next += 16625;
1332	>	int64 delay = next - GetTicks_usec();
1333	>	if (delay > 0)
1334	>	Delay_usec(delay);
1335	>	else if (delay < -16625)
1336	>	next = GetTicks_usec();
1337	>	ticks++;
1338
1339		#if !EMULATED_PPC
1340		// Did we crash?
1341		if (emul_thread_fatal) {
1342
1343		// Yes, dump registers
1344	<	pt_regs *r = (pt_regs *)&sigsegv_regs;
1344	>	sigregs *r = &sigsegv_regs;
1345		char str[256];
1346	<	sprintf(str, "SIGSEGV\n"
1346	>	if (crash_reason == NULL)
1347	>	crash_reason = "SIGSEGV";
1348	>	sprintf(str, "%s\n"
1349		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1350		"  xer %08lx     cr %08lx  \n"
1351		"   r0 %08lx     r1 %08lx     r2 %08lx     r3 %08lx\n"
#	Line 1107 | Line 1356 | static void *tick_func(void *arg)
1356		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1357		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1358		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1359	+	crash_reason,
1360		r->nip, r->link, r->ctr, r->msr,
1361		r->xer, r->ccr,
1362		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1142 | Line 1392 | static void *tick_func(void *arg)
1392		TriggerInterrupt();
1393		}
1394		}
1395	+
1396	+	uint64 end = GetTicks_usec();
1397	+	D(bug("%Ld ticks in %Ld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
1398		return NULL;
1399		}
1400
#	Line 1152 | Line 1405 | static void *tick_func(void *arg)
1405
1406		void Set_pthread_attr(pthread_attr_t *attr, int priority)
1407		{
1408	<	// nothing to do
1408	>	#ifdef HAVE_PTHREADS
1409	>	pthread_attr_init(attr);
1410	>	#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
1411	>	// Some of these only work for superuser
1412	>	if (geteuid() == 0) {
1413	>	pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
1414	>	pthread_attr_setschedpolicy(attr, SCHED_FIFO);
1415	>	struct sched_param fifo_param;
1416	>	fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) +
1417	>	sched_get_priority_max(SCHED_FIFO)) / 2 +
1418	>	priority);
1419	>	pthread_attr_setschedparam(attr, &fifo_param);
1420	>	}
1421	>	if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) {
1422	>	#ifdef PTHREAD_SCOPE_BOUND_NP
1423	>	// If system scope is not available (eg. we're not running
1424	>	// with CAP_SCHED_MGT capability on an SGI box), try bound
1425	>	// scope.  It exposes pthread scheduling to the kernel,
1426	>	// without setting realtime priority.
1427	>	pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP);
1428	>	#endif
1429	>	}
1430	>	#endif
1431	>	#endif
1432		}
1433
1434
#	Line 1168 | Line 1444 | struct B2_mutex {
1444		pthread_mutexattr_init(&attr);
1445		// Initialize the mutex for priority inheritance --
1446		// required for accurate timing.
1447	<	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL
1447	>	#if defined(HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL) && !defined(__CYGWIN__)
1448		pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
1449		#endif
1450		#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL)
#	Line 1239 | Line 1515 | void B2_delete_mutex(B2_mutex *mutex)
1515		*  Trigger signal USR2 from another thread
1516		*/
1517
1518	<	#if !EMULATED_PPC || ASYNC_IRQ
1518	>	#if !EMULATED_PPC
1519		void TriggerInterrupt(void)
1520		{
1521		if (ready_for_signals)
#	Line 1271 | Line 1547 | void ClearInterruptFlag(uint32 flag)
1547
1548		void DisableInterrupt(void)
1549		{
1550	+	#if EMULATED_PPC
1551	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) + 1);
1552	+	#else
1553		atomic_add((int *)XLM_IRQ_NEST, 1);
1554	+	#endif
1555		}
1556
1557
#	Line 1281 | Line 1561 | void DisableInterrupt(void)
1561
1562		void EnableInterrupt(void)
1563		{
1564	+	#if EMULATED_PPC
1565	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) - 1);
1566	+	#else
1567		atomic_add((int *)XLM_IRQ_NEST, -1);
1568	+	#endif
1569		}
1570
1571
#	Line 1289 | Line 1573 | void EnableInterrupt(void)
1573		*  USR2 handler
1574		*/
1575
1576	<	#if EMULATED_PPC
1577	<	static void sigusr2_handler(int sig)
1576	>	#if !EMULATED_PPC
1577	>	static void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1578		{
1579	<	#if ASYNC_IRQ
1580	<	extern void HandleInterrupt(void);
1581	<	HandleInterrupt();
1579	>	machine_regs *r = MACHINE_REGISTERS(scp);
1580	>
1581	>	#ifdef USE_SDL_VIDEO
1582	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1583	>	SDL_PumpEvents();
1584		#endif
1299	–	}
1300	–	#else
1301	–	static void sigusr2_handler(int sig, sigcontext_struct *sc)
1302	–	{
1303	–	pt_regs *r = sc->regs;
1585
1586		// Do nothing if interrupts are disabled
1587		if (*(int32 *)XLM_IRQ_NEST > 0)
#	Line 1314 | Line 1595 | static void sigusr2_handler(int sig, sig
1595		case MODE_68K:
1596		// 68k emulator active, trigger 68k interrupt level 1
1597		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1598	<	r->ccr |= ntohl(kernel_data->v[0x674 >> 2]);
1598	>	r->cr() |= ntohl(kernel_data->v[0x674 >> 2]);
1599		break;
1600
1601		#if INTERRUPTS_IN_NATIVE_MODE
1602		case MODE_NATIVE:
1603		// 68k emulator inactive, in nanokernel?
1604	<	if (r->gpr[1] != KernelDataAddr) {
1604	>	if (r->gpr(1) != KernelDataAddr) {
1605	>
1606	>	// Set extra stack for nested interrupts
1607	>	sig_stack_acquire();
1608	>
1609		// Prepare for 68k interrupt level 1
1610		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1611		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) | ntohl(kernel_data->v[0x674 >> 2]));
1612
1613		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1614	<	atomic_add((int32 *)XLM_IRQ_NEST, 1);
1614	>	DisableInterrupt();
1615		if (ROMType == ROMTYPE_NEWWORLD)
1616		ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1617		else
1618		ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1619	+
1620	+	// Reset normal signal stack
1621	+	sig_stack_release();
1622		}
1623		break;
1624		#endif
#	Line 1341 | Line 1629 | static void sigusr2_handler(int sig, sig
1629		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1630
1631		// Set extra stack for SIGSEGV handler
1632	<	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);
1632	>	sig_stack_acquire();
1633		#if 1
1634		// Execute full 68k interrupt routine
1635		M68kRegisters r;
#	Line 1367 | Line 1651 | static void sigusr2_handler(int sig, sig
1651		if (InterruptFlags & INTFLAG_VIA) {
1652		ClearInterruptFlag(INTFLAG_VIA);
1653		ADBInterrupt();
1654	<	ExecutePPC(VideoVBL);
1654	>	ExecuteNative(NATIVE_VIDEO_VBL);
1655		}
1656		}
1657		#endif
1658		// Reset normal signal stack
1659	<	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);
1659	>	sig_stack_release();
1660		}
1661		break;
1662		#endif
#	Line 1389 | Line 1670 | static void sigusr2_handler(int sig, sig
1670		*/
1671
1672		#if !EMULATED_PPC
1673	<	static void sigsegv_handler(int sig, sigcontext_struct *sc)
1673	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp)
1674		{
1675	<	pt_regs *r = sc->regs;
1675	>	machine_regs *r = MACHINE_REGISTERS(scp);
1676
1677		// Get effective address
1678	<	uint32 addr = r->dar;
1678	>	uint32 addr = r->dar();
1679
1680		#if ENABLE_VOSF
1681		// Handle screen fault.
1682		extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1683	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1683	>	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc()))
1684		return;
1685		#endif
1686
1687		num_segv++;
1688
1689	<	// Fault in Mac ROM or RAM?
1690	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1689	>	// Fault in Mac ROM or RAM or DR Cache?
1690	>	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));
1691		if (mac_fault) {
1692
1693		// "VM settings" during MacOS 8 installation
1694	<	if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1695	<	r->nip += 4;
1696	<	r->gpr[8] = 0;
1694	>	if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) {
1695	>	r->pc() += 4;
1696	>	r->gpr(8) = 0;
1697		return;
1698
1699		// MacOS 8.5 installation
1700	<	} else if (r->nip == ROM_BASE + 0x488140 && r->gpr[16] == 0xf8000000) {
1701	<	r->nip += 4;
1702	<	r->gpr[8] = 0;
1700	>	} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) {
1701	>	r->pc() += 4;
1702	>	r->gpr(8) = 0;
1703		return;
1704
1705		// MacOS 8 serial drivers on startup
1706	<	} else if (r->nip == ROM_BASE + 0x48e080 && (r->gpr[8] == 0xf3012002 || r->gpr[8] == 0xf3012000)) {
1707	<	r->nip += 4;
1708	<	r->gpr[8] = 0;
1706	>	} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1707	>	r->pc() += 4;
1708	>	r->gpr(8) = 0;
1709		return;
1710
1711		// MacOS 8.1 serial drivers on startup
1712	<	} else if (r->nip == ROM_BASE + 0x48c5e0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1713	<	r->nip += 4;
1712	>	} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1713	>	r->pc() += 4;
1714	>	return;
1715	>	} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1716	>	r->pc() += 4;
1717		return;
1718	<	} else if (r->nip == ROM_BASE + 0x4a10a0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1719	<	r->nip += 4;
1718	>
1719	>	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
1720	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(16) == 0xf3012002 || r->gpr(16) == 0xf3012000)) {
1721	>	r->pc() += 4;
1722	>	return;
1723	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1724	>	r->pc() += 4;
1725		return;
1726		}
1727
1728		// Get opcode and divide into fields
1729	<	uint32 opcode = *((uint32 *)r->nip);
1729	>	uint32 opcode = *((uint32 *)r->pc());
1730		uint32 primop = opcode >> 26;
1731		uint32 exop = (opcode >> 1) & 0x3ff;
1732		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1526 | Line 1815 | static void sigsegv_handler(int sig, sig
1815		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1816		case 45:        // sthu
1817		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1818	+	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1819	+	case 46:        // lmw
1820	+	if ((addr % 4) != 0) {
1821	+	uint32 ea = addr;
1822	+	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1823	+	for (int i = rd; i <= 31; i++) {
1824	+	r->gpr(i) = ReadMacInt32(ea);
1825	+	ea += 4;
1826	+	}
1827	+	r->pc() += 4;
1828	+	goto rti;
1829	+	}
1830	+	break;
1831	+	case 47:        // stmw
1832	+	if ((addr % 4) != 0) {
1833	+	uint32 ea = addr;
1834	+	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1835	+	for (int i = rd; i <= 31; i++) {
1836	+	WriteMacInt32(ea, r->gpr(i));
1837	+	ea += 4;
1838	+	}
1839	+	r->pc() += 4;
1840	+	goto rti;
1841	+	}
1842	+	break;
1843	+	#endif
1844		}
1845
1846	<	// Ignore ROM writes
1847	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1848	<	//                      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));
1846	>	// Ignore ROM writes (including to the zero page, which is read-only)
1847	>	if (transfer_type == TYPE_STORE &&
1848	>	((addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) ||
1849	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1850	>	//                      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()));
1851		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1852	<	r->gpr[ra] = addr;
1853	<	r->nip += 4;
1852	>	r->gpr(ra) = addr;
1853	>	r->pc() += 4;
1854		goto rti;
1855		}
1856
1857		// Ignore illegal memory accesses?
1858		if (PrefsFindBool("ignoresegv")) {
1859		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1860	<	r->gpr[ra] = addr;
1860	>	r->gpr(ra) = addr;
1861		if (transfer_type == TYPE_LOAD)
1862	<	r->gpr[rd] = 0;
1863	<	r->nip += 4;
1862	>	r->gpr(rd) = 0;
1863	>	r->pc() += 4;
1864		goto rti;
1865		}
1866
#	Line 1551 | Line 1868 | static void sigsegv_handler(int sig, sig
1868		if (!PrefsFindBool("nogui")) {
1869		char str[256];
1870		if (transfer_type == TYPE_LOAD || transfer_type == TYPE_STORE)
1871	<	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]);
1871	>	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));
1872		else
1873	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1873	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1874		ErrorAlert(str);
1875		QuitEmulator();
1876		return;
#	Line 1561 | Line 1878 | static void sigsegv_handler(int sig, sig
1878		}
1879
1880		// For all other errors, jump into debugger (sort of...)
1881	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1882		if (!ready_for_signals) {
1883	<	printf("SIGSEGV\n");
1884	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1883	>	printf("%s\n");
1884	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1885		printf(
1886		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1887		"  xer %08lx     cr %08lx  \n"
#	Line 1575 | Line 1893 | static void sigsegv_handler(int sig, sig
1893		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1894		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1895		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1896	<	r->nip, r->link, r->ctr, r->msr,
1897	<	r->xer, r->ccr,
1898	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1899	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1900	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1901	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1902	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1903	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1904	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1905	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1896	>	crash_reason,
1897	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1898	>	r->xer(), r->cr(),
1899	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1900	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1901	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1902	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1903	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1904	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1905	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1906	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1907		exit(1);
1908		QuitEmulator();
1909		return;
1910		} else {
1911		// We crashed. Save registers, tell tick thread and loop forever
1912	<	sigsegv_regs = *(sigregs *)r;
1912	>	build_sigregs(&sigsegv_regs, r);
1913		emul_thread_fatal = true;
1914		for (;;) ;
1915		}
#	Line 1602 | Line 1921 | rti:;
1921		*  SIGILL handler
1922		*/
1923
1924	<	static void sigill_handler(int sig, sigcontext_struct *sc)
1924	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp)
1925		{
1926	<	pt_regs *r = sc->regs;
1926	>	machine_regs *r = MACHINE_REGISTERS(scp);
1927		char str[256];
1928
1929		// Fault in Mac ROM or RAM?
1930	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1930	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1931		if (mac_fault) {
1932
1933		// Get opcode and divide into fields
1934	<	uint32 opcode = *((uint32 *)r->nip);
1934	>	uint32 opcode = *((uint32 *)r->pc());
1935		uint32 primop = opcode >> 26;
1936		uint32 exop = (opcode >> 1) & 0x3ff;
1937		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1623 | Line 1942 | static void sigill_handler(int sig, sigc
1942		switch (primop) {
1943		case 9:         // POWER instructions
1944		case 22:
1945	<	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->nip, r->gpr[1], opcode);
1945	>	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode);
1946		ErrorAlert(str);
1947		QuitEmulator();
1948		return;
#	Line 1631 | Line 1950 | power_inst:            sprintf(str, GetString(STR_
1950		case 31:
1951		switch (exop) {
1952		case 83:        // mfmsr
1953	<	r->gpr[rd] = 0xf072;
1954	<	r->nip += 4;
1953	>	r->gpr(rd) = 0xf072;
1954	>	r->pc() += 4;
1955		goto rti;
1956
1957		case 210:       // mtsr
1958		case 242:       // mtsrin
1959		case 306:       // tlbie
1960	<	r->nip += 4;
1960	>	r->pc() += 4;
1961		goto rti;
1962
1963		case 339: {     // mfspr
#	Line 1654 | Line 1973 | power_inst:            sprintf(str, GetString(STR_
1973		case 957:       // PMC3
1974		case 958:       // PMC4
1975		case 959:       // SDA
1976	<	r->nip += 4;
1976	>	r->pc() += 4;
1977		goto rti;
1978		case 25:        // SDR1
1979	<	r->gpr[rd] = 0xdead001f;
1980	<	r->nip += 4;
1979	>	r->gpr(rd) = 0xdead001f;
1980	>	r->pc() += 4;
1981		goto rti;
1982		case 287:       // PVR
1983	<	r->gpr[rd] = PVR;
1984	<	r->nip += 4;
1983	>	r->gpr(rd) = PVR;
1984	>	r->pc() += 4;
1985		goto rti;
1986		}
1987		break;
#	Line 1698 | Line 2017 | power_inst:            sprintf(str, GetString(STR_
2017		case 957:       // PMC3
2018		case 958:       // PMC4
2019		case 959:       // SDA
2020	<	r->nip += 4;
2020	>	r->pc() += 4;
2021		goto rti;
2022		}
2023		break;
#	Line 1717 | Line 2036 | power_inst:            sprintf(str, GetString(STR_
2036
2037		// In GUI mode, show error alert
2038		if (!PrefsFindBool("nogui")) {
2039	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
2039	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
2040		ErrorAlert(str);
2041		QuitEmulator();
2042		return;
#	Line 1725 | Line 2044 | power_inst:            sprintf(str, GetString(STR_
2044		}
2045
2046		// For all other errors, jump into debugger (sort of...)
2047	+	crash_reason = "SIGILL";
2048		if (!ready_for_signals) {
2049	<	printf("SIGILL\n");
2050	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
2049	>	printf("%s\n");
2050	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
2051		printf(
2052		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
2053		"  xer %08lx     cr %08lx  \n"
#	Line 1739 | Line 2059 | power_inst:            sprintf(str, GetString(STR_
2059		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
2060		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
2061		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
2062	<	r->nip, r->link, r->ctr, r->msr,
2063	<	r->xer, r->ccr,
2064	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
2065	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
2066	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
2067	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
2068	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
2069	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
2070	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
2071	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
2062	>	crash_reason,
2063	>	r->pc(), r->lr(), r->ctr(), r->msr(),
2064	>	r->xer(), r->cr(),
2065	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
2066	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
2067	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
2068	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
2069	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
2070	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
2071	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
2072	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
2073		exit(1);
2074		QuitEmulator();
2075		return;
2076		} else {
2077		// We crashed. Save registers, tell tick thread and loop forever
2078	<	sigsegv_regs = *(sigregs *)r;
2078	>	build_sigregs(&sigsegv_regs, r);
2079		emul_thread_fatal = true;
2080		for (;;) ;
2081		}
#	Line 1764 | Line 2085 | rti:;
2085
2086
2087		/*
2088	+	*  Helpers to share 32-bit addressable data with MacOS
2089	+	*/
2090	+
2091	+	bool SheepMem::Init(void)
2092	+	{
2093	+	// Size of a native page
2094	+	page_size = getpagesize();
2095	+
2096	+	// Allocate SheepShaver globals
2097	+	proc = base;
2098	+	if (vm_mac_acquire(base, size) < 0)
2099	+	return false;
2100	+
2101	+	// Allocate page with all bits set to 0, right in the middle
2102	+	// This is also used to catch undesired overlaps between proc and data areas
2103	+	zero_page = proc + (size / 2);
2104	+	Mac_memset(zero_page, 0, page_size);
2105	+	if (vm_protect(Mac2HostAddr(zero_page), page_size, VM_PAGE_READ) < 0)
2106	+	return false;
2107	+
2108	+	#if EMULATED_PPC
2109	+	// Allocate alternate stack for PowerPC interrupt routine
2110	+	sig_stack = base + size;
2111	+	if (vm_mac_acquire(sig_stack, SIG_STACK_SIZE) < 0)
2112	+	return false;
2113	+	#endif
2114	+
2115	+	data = base + size;
2116	+	return true;
2117	+	}
2118	+
2119	+	void SheepMem::Exit(void)
2120	+	{
2121	+	if (data) {
2122	+	// Delete SheepShaver globals
2123	+	vm_mac_release(base, size);
2124	+
2125	+	#if EMULATED_PPC
2126	+	// Delete alternate stack for PowerPC interrupt routine
2127	+	vm_mac_release(sig_stack, SIG_STACK_SIZE);
2128	+	#endif
2129	+	}
2130	+	}
2131	+
2132	+
2133	+	/*
2134		*  Display alert
2135		*/
2136
#	Line 1812 | Line 2179 | void display_alert(int title_id, int pre
2179
2180		void ErrorAlert(const char *text)
2181		{
2182	<	#ifdef ENABLE_GTK
2182	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2183		if (PrefsFindBool("nogui") || x_display == NULL) {
2184		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
2185		return;
#	Line 1831 | Line 2198 | void ErrorAlert(const char *text)
2198
2199		void WarningAlert(const char *text)
2200		{
2201	<	#ifdef ENABLE_GTK
2201	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2202		if (PrefsFindBool("nogui") || x_display == NULL) {
2203		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
2204		return;

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