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

Comparing SheepShaver/src/Unix/main_unix.cpp (file contents):
Revision 1.19 by gbeauche, 2003-12-05T12:41:19Z vs.
Revision 1.60 by gbeauche, 2005-02-27T21:52:06Z

#	Line 1 | Line 1
1		/*
2		*  main_unix.cpp - Emulation core, Unix implementation
3		*
4	<	*  SheepShaver (C) 1997-2002 Christian Bauer and Marc Hellwig
4	>	*  SheepShaver (C) 1997-2005 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 27 | Line 27
27		*  is slightly different from the SysV ABI used by Linux:
28		*    - Stack frames are different (e.g. LR is stored in 8(r1) under
29		*      MacOS, but in 4(r1) under Linux)
30	<	*    - There is no TOC under Linux; r2 is free for the user
30	>	*    - There is a pointer to Thread Local Storage (TLS) under Linux with
31	>	*      recent enough glibc. This is r2 in 32-bit mode and r13 in
32	>	*      64-bit mode (PowerOpen/AIX ABI)
33		*    - r13 is used as a small data pointer under Linux (but appearently
34		*      it is not used this way? To be sure, we specify -msdata=none
35		*      in the Makefile)
36	<	*    - As there is no TOC, there are also no TVECTs under Linux;
37	<	*      function pointers point directly to the function code
36	>	*    - There are no TVECTs under Linux; function pointers point
37	>	*      directly to the function code
38		*  The Execute*() functions have to account for this. Additionally, we
39		*  cannot simply call MacOS functions by getting their TVECT and jumping
40		*  to it. Such calls are done via the call_macos*() functions in
#	Line 65 | Line 67
67		*  ExecutePPC (or any function that might cause a mode switch). The signal
68		*  stack is restored before exiting the SIGUSR2 handler.
69		*
70	+	*  There is apparently another problem when processing signals. In
71	+	*  fullscreen mode, we get quick updates of the mouse position. This
72	+	*  causes an increased number of calls to TriggerInterrupt(). And,
73	+	*  since IRQ_NEST is not fully handled atomically, nested calls to
74	+	*  ppc_interrupt() may cause stack corruption to eventually crash the
75	+	*  emulator.
76	+	*
77	+	*  FIXME:
78	+	*  The current solution is to allocate another signal stack when
79	+	*  processing ppc_interrupt(). However, it may be better to detect
80	+	*  the INTFLAG_ADB case and handle it specifically with some extra mutex?
81	+	*
82		*  TODO:
83		*    check if SIGSEGV handler works for all registers (including FP!)
84		*/
#	Line 93 | Line 107
107		#include "xpram.h"
108		#include "timer.h"
109		#include "adb.h"
96	–	#include "sony.h"
97	–	#include "disk.h"
98	–	#include "cdrom.h"
99	–	#include "scsi.h"
110		#include "video.h"
101	–	#include "audio.h"
102	–	#include "ether.h"
103	–	#include "serial.h"
104	–	#include "clip.h"
105	–	#include "extfs.h"
111		#include "sys.h"
112		#include "macos_util.h"
113		#include "rom_patches.h"
114		#include "user_strings.h"
115		#include "vm_alloc.h"
116		#include "sigsegv.h"
112	–	#include "thunks.h"
117
118		#define DEBUG 0
119		#include "debug.h"
120
121
122	+	#ifdef HAVE_DIRENT_H
123	+	#include <dirent.h>
124	+	#endif
125	+
126	+	#ifdef USE_SDL
127	+	#include <SDL.h>
128	+	#endif
129	+
130	+	#ifndef USE_SDL_VIDEO
131		#include <X11/Xlib.h>
132	+	#endif
133
134		#ifdef ENABLE_GTK
135		#include <gtk/gtk.h>
#	Line 132 | Line 146
146		#endif
147
148
149	+	// Enable emulation of unaligned lmw/stmw?
150	+	#define EMULATE_UNALIGNED_LOADSTORE_MULTIPLE 1
151	+
152		// Enable Execute68k() safety checks?
153		#define SAFE_EXEC_68K 0
154
#	Line 141 | Line 158
158		// Interrupts in native mode?
159		#define INTERRUPTS_IN_NATIVE_MODE 1
160
161	+	// Number of alternate stacks for signal handlers?
162	+	#define SIG_STACK_COUNT 4
163	+
164
165		// Constants
166		const char ROM_FILE_NAME[] = "ROM";
167		const char ROM_FILE_NAME2[] = "Mac OS ROM";
168
169	+	#if REAL_ADDRESSING
170		const uintptr RAM_BASE = 0x20000000;            // Base address of RAM
171	+	#else
172	+	// FIXME: needs to be >= 0x04000000
173	+	const uintptr RAM_BASE = 0x10000000;            // Base address of RAM
174	+	#endif
175		const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
176
177
178		#if !EMULATED_PPC
154	–	// Structure in which registers are saved in a signal handler;
155	–	// sigcontext->regs points to it
156	–	// (see arch/ppc/kernel/signal.c)
157	–	typedef struct {
158	–	uint32 u[4];
159	–	} __attribute((aligned(16))) vector128;
160	–	#include <linux/elf.h>
161	–
179		struct sigregs {
180	<	elf_gregset_t   gp_regs;                                // Identical to pt_regs
181	<	double                  fp_regs[ELF_NFPREG];    // f0..f31 and fpsrc
182	<	//more (uninteresting) stuff following here
180	>	uint32 nip;
181	>	uint32 link;
182	>	uint32 ctr;
183	>	uint32 msr;
184	>	uint32 xer;
185	>	uint32 ccr;
186	>	uint32 gpr[32];
187	>	};
188	>
189	>	#if defined(__linux__)
190	>	#include <sys/ucontext.h>
191	>	#define MACHINE_REGISTERS(scp)  ((machine_regs *)(((ucontext_t *)scp)->uc_mcontext.regs))
192	>
193	>	struct machine_regs : public pt_regs
194	>	{
195	>	u_long & cr()                           { return pt_regs::ccr; }
196	>	uint32 cr() const                       { return pt_regs::ccr; }
197	>	uint32 lr() const                       { return pt_regs::link; }
198	>	uint32 ctr() const                      { return pt_regs::ctr; }
199	>	uint32 xer() const                      { return pt_regs::xer; }
200	>	uint32 msr() const                      { return pt_regs::msr; }
201	>	uint32 dar() const                      { return pt_regs::dar; }
202	>	u_long & pc()                           { return pt_regs::nip; }
203	>	uint32 pc() const                       { return pt_regs::nip; }
204	>	u_long & gpr(int i)                     { return pt_regs::gpr[i]; }
205	>	uint32 gpr(int i) const         { return pt_regs::gpr[i]; }
206	>	};
207	>	#endif
208	>
209	>	#if defined(__NetBSD__)
210	>	#include <sys/ucontext.h>
211	>	#define MACHINE_REGISTERS(scp)  ((machine_regs *)&(((ucontext_t *)scp)->uc_mcontext))
212	>
213	>	struct machine_regs : public mcontext_t
214	>	{
215	>	long & cr()                                     { return __gregs[_REG_CR]; }
216	>	uint32 cr() const                       { return __gregs[_REG_CR]; }
217	>	uint32 lr() const                       { return __gregs[_REG_LR]; }
218	>	uint32 ctr() const                      { return __gregs[_REG_CTR]; }
219	>	uint32 xer() const                      { return __gregs[_REG_XER]; }
220	>	uint32 msr() const                      { return __gregs[_REG_MSR]; }
221	>	uint32 dar() const                      { return (uint32)(((siginfo_t *)(((unsigned long)this) - offsetof(ucontext_t, uc_mcontext))) - 1)->si_addr; } /* HACK */
222	>	long & pc()                                     { return __gregs[_REG_PC]; }
223	>	uint32 pc() const                       { return __gregs[_REG_PC]; }
224	>	long & gpr(int i)                       { return __gregs[_REG_R0 + i]; }
225	>	uint32 gpr(int i) const         { return __gregs[_REG_R0 + i]; }
226		};
227		#endif
228
229	+	#if defined(__APPLE__) && defined(__MACH__)
230	+	#include <sys/signal.h>
231	+	extern "C" int sigaltstack(const struct sigaltstack *ss, struct sigaltstack *oss);
232	+
233	+	#include <sys/ucontext.h>
234	+	#define MACHINE_REGISTERS(scp)  ((machine_regs *)(((ucontext_t *)scp)->uc_mcontext))
235	+
236	+	struct machine_regs : public mcontext
237	+	{
238	+	uint32 & cr()                           { return ss.cr; }
239	+	uint32 cr() const                       { return ss.cr; }
240	+	uint32 lr() const                       { return ss.lr; }
241	+	uint32 ctr() const                      { return ss.ctr; }
242	+	uint32 xer() const                      { return ss.xer; }
243	+	uint32 msr() const                      { return ss.srr1; }
244	+	uint32 dar() const                      { return es.dar; }
245	+	uint32 & pc()                           { return ss.srr0; }
246	+	uint32 pc() const                       { return ss.srr0; }
247	+	uint32 & gpr(int i)                     { return (&ss.r0)[i]; }
248	+	uint32 gpr(int i) const         { return (&ss.r0)[i]; }
249	+	};
250	+	#endif
251	+
252	+	static void build_sigregs(sigregs *srp, machine_regs *mrp)
253	+	{
254	+	srp->nip = mrp->pc();
255	+	srp->link = mrp->lr();
256	+	srp->ctr = mrp->ctr();
257	+	srp->msr = mrp->msr();
258	+	srp->xer = mrp->xer();
259	+	srp->ccr = mrp->cr();
260	+	for (int i = 0; i < 32; i++)
261	+	srp->gpr[i] = mrp->gpr(i);
262	+	}
263	+
264	+	static struct sigaltstack sig_stacks[SIG_STACK_COUNT];  // Stacks for signal handlers
265	+	static int sig_stack_id = 0;                                                    // Stack slot currently used
266	+
267	+	static inline void sig_stack_acquire(void)
268	+	{
269	+	if (++sig_stack_id == SIG_STACK_COUNT) {
270	+	printf("FATAL: signal stack overflow\n");
271	+	return;
272	+	}
273	+	sigaltstack(&sig_stacks[sig_stack_id], NULL);
274	+	}
275	+
276	+	static inline void sig_stack_release(void)
277	+	{
278	+	if (--sig_stack_id < 0) {
279	+	printf("FATAL: signal stack underflow\n");
280	+	return;
281	+	}
282	+	sigaltstack(&sig_stacks[sig_stack_id], NULL);
283	+	}
284	+	#endif
285	+
286
287		// Global variables (exported)
288		#if !EMULATED_PPC
289	<	void *TOC;                              // Small data pointer (r13)
289	>	void *TOC;                              // Pointer to Thread Local Storage (r2)
290	>	void *R13;                              // Pointer to .sdata section (r13 under Linux)
291		#endif
292		uint32 RAMBase;                 // Base address of Mac RAM
293		uint32 RAMSize;                 // Size of Mac RAM
294		uint32 KernelDataAddr;  // Address of Kernel Data
295		uint32 BootGlobsAddr;   // Address of BootGlobs structure at top of Mac RAM
296	+	uint32 DRCacheAddr;             // Address of DR Cache
297		uint32 PVR;                             // Theoretical PVR
298		int64 CPUClockSpeed;    // Processor clock speed (Hz)
299		int64 BusClockSpeed;    // Bus clock speed (Hz)
300	+	int64 TimebaseSpeed;    // Timebase clock speed (Hz)
301	+	uint8 *RAMBaseHost;             // Base address of Mac RAM (host address space)
302	+	uint8 *ROMBaseHost;             // Base address of Mac ROM (host address space)
303
304
305		// Global variables
306	+	#ifndef USE_SDL_VIDEO
307		char *x_display_name = NULL;                            // X11 display name
308		Display *x_display = NULL;                                      // X11 display handle
309	+	#ifdef X11_LOCK_TYPE
310	+	X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock
311	+	#endif
312	+	#endif
313
314		static int zero_fd = 0;                                         // FD of /dev/zero
315		static bool lm_area_mapped = false;                     // Flag: Low Memory area mmap()ped
316		static int kernel_area = -1;                            // SHM ID of Kernel Data area
317		static bool rom_area_mapped = false;            // Flag: Mac ROM mmap()ped
318		static bool ram_area_mapped = false;            // Flag: Mac RAM mmap()ped
319	+	static bool dr_cache_area_mapped = false;       // Flag: Mac DR Cache mmap()ped
320	+	static bool dr_emulator_area_mapped = false;// Flag: Mac DR Emulator mmap()ped
321		static KernelData *kernel_data;                         // Pointer to Kernel Data
322		static EmulatorData *emulator_data;
323
324		static uint8 last_xpram[XPRAM_SIZE];            // Buffer for monitoring XPRAM changes
325
326		static bool nvram_thread_active = false;        // Flag: NVRAM watchdog installed
327	+	static volatile bool nvram_thread_cancel;       // Flag: Cancel NVRAM thread
328		static pthread_t nvram_thread;                          // NVRAM watchdog
329		static bool tick_thread_active = false;         // Flag: MacOS thread installed
330	+	static volatile bool tick_thread_cancel;        // Flag: Cancel 60Hz thread
331		static pthread_t tick_thread;                           // 60Hz thread
332		static pthread_t emul_thread;                           // MacOS thread
333
#	Line 204 | Line 335 | static bool ready_for_signals = false;
335		static int64 num_segv = 0;                                      // Number of handled SEGV signals
336
337		static struct sigaction sigusr2_action;         // Interrupt signal (of emulator thread)
338	<	#if !EMULATED_PPC
338	>	#if EMULATED_PPC
339	>	static uintptr sig_stack = 0;                           // Stack for PowerPC interrupt routine
340	>	#else
341		static struct sigaction sigsegv_action;         // Data access exception signal (of emulator thread)
342		static struct sigaction sigill_action;          // Illegal instruction signal (of emulator thread)
210	–	static void *sig_stack = NULL;                          // Stack for signal handlers
211	–	static void *extra_stack = NULL;                        // Stack for SIGSEGV inside interrupt handler
343		static bool emul_thread_fatal = false;          // Flag: MacOS thread crashed, tick thread shall dump debug output
344		static sigregs sigsegv_regs;                            // Register dump when crashed
345	+	static const char *crash_reason = NULL;         // Reason of the crash (SIGSEGV, SIGBUS, SIGILL)
346		#endif
347
348	+	uint32  SheepMem::page_size;                            // Size of a native page
349		uintptr SheepMem::zero_page = 0;                        // Address of ro page filled in with zeros
350		uintptr SheepMem::base = 0x60000000;            // Address of SheepShaver data
351	<	uintptr SheepMem::top = 0;                                      // Top of SheepShaver data (stack like storage)
351	>	uintptr SheepMem::proc;                                         // Bottom address of SheepShave procedures
352	>	uintptr SheepMem::data;                                         // Top of SheepShaver data (stack like storage)
353
354
355		// Prototypes
356	+	static bool kernel_data_init(void);
357	+	static void kernel_data_exit(void);
358		static void Quit(void);
359		static void *emul_func(void *arg);
360		static void *nvram_func(void *arg);
361		static void *tick_func(void *arg);
362		#if EMULATED_PPC
227	–	static void sigusr2_handler(int sig);
363		extern void emul_ppc(uint32 start);
364		extern void init_emul_ppc(void);
365		extern void exit_emul_ppc(void);
366	+	sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
367		#else
368	<	static void sigusr2_handler(int sig, sigcontext_struct *sc);
369	<	static void sigsegv_handler(int sig, sigcontext_struct *sc);
370	<	static void sigill_handler(int sig, sigcontext_struct *sc);
368	>	static void sigusr2_handler(int sig, siginfo_t *sip, void *scp);
369	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp);
370	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp);
371		#endif
372
373
374		// From asm_linux.S
375		#if !EMULATED_PPC
240	–	extern "C" void *get_toc(void);
376		extern "C" void *get_sp(void);
377	<	extern "C" void flush_icache_range(void *start, void *end);
377	>	extern "C" void *get_r2(void);
378	>	extern "C" void set_r2(void *);
379	>	extern "C" void *get_r13(void);
380	>	extern "C" void set_r13(void *);
381	>	extern "C" void flush_icache_range(uint32 start, uint32 end);
382		extern "C" void jump_to_rom(uint32 entry, uint32 context);
383		extern "C" void quit_emulator(void);
384		extern "C" void execute_68k(uint32 pc, M68kRegisters *r);
#	Line 253 | Line 392 | extern void paranoia_check(void);
392
393		#if EMULATED_PPC
394		/*
395	+	*  Return signal stack base
396	+	*/
397	+
398	+	uintptr SignalStackBase(void)
399	+	{
400	+	return sig_stack + SIG_STACK_SIZE;
401	+	}
402	+
403	+
404	+	/*
405		*  Atomic operations
406		*/
407
#	Line 293 | Line 442 | int atomic_or(int *var, int v)
442
443
444		/*
445	+	*  Memory management helpers
446	+	*/
447	+
448	+	static inline int vm_mac_acquire(uint32 addr, uint32 size)
449	+	{
450	+	return vm_acquire_fixed(Mac2HostAddr(addr), size);
451	+	}
452	+
453	+	static inline int vm_mac_release(uint32 addr, uint32 size)
454	+	{
455	+	return vm_release(Mac2HostAddr(addr), size);
456	+	}
457	+
458	+
459	+	/*
460		*  Main program
461		*/
462
#	Line 308 | Line 472 | static void usage(const char *prg_name)
472		int main(int argc, char **argv)
473		{
474		char str[256];
311	–	uint32 *boot_globs;
312	–	int16 i16;
475		int rom_fd;
476		FILE *proc_file;
477		const char *rom_path;
#	Line 326 | Line 488 | int main(int argc, char **argv)
488		printf(" %s\n", GetString(STR_ABOUT_TEXT2));
489
490		#if !EMULATED_PPC
491	+	#ifdef SYSTEM_CLOBBERS_R2
492		// Get TOC pointer
493	<	TOC = get_toc();
493	>	TOC = get_r2();
494	>	#endif
495	>	#ifdef SYSTEM_CLOBBERS_R13
496	>	// Get r13 register
497	>	R13 = get_r13();
498	>	#endif
499		#endif
500
501		#ifdef ENABLE_GTK
#	Line 343 | Line 511 | int main(int argc, char **argv)
511		for (int i=1; i<argc; i++) {
512		if (strcmp(argv[i], "--help") == 0) {
513		usage(argv[0]);
514	+	#ifndef USE_SDL_VIDEO
515		} else if (strcmp(argv[i], "--display") == 0) {
516		i++;
517		if (i < argc)
518		x_display_name = strdup(argv[i]);
519	+	#endif
520		} else if (argv[i][0] == '-') {
521		fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
522		usage(argv[0]);
523		}
524		}
525
526	+	#ifdef USE_SDL
527	+	// Initialize SDL system
528	+	int sdl_flags = 0;
529	+	#ifdef USE_SDL_VIDEO
530	+	sdl_flags |= SDL_INIT_VIDEO;
531	+	#endif
532	+	#ifdef USE_SDL_AUDIO
533	+	sdl_flags |= SDL_INIT_AUDIO;
534	+	#endif
535	+	assert(sdl_flags != 0);
536	+	if (SDL_Init(sdl_flags) == -1) {
537	+	char str[256];
538	+	sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError());
539	+	ErrorAlert(str);
540	+	goto quit;
541	+	}
542	+	atexit(SDL_Quit);
543	+	#endif
544	+
545	+	#ifndef USE_SDL_VIDEO
546		// Open display
547		x_display = XOpenDisplay(x_display_name);
548		if (x_display == NULL) {
#	Line 366 | Line 556 | int main(int argc, char **argv)
556		// Fork out, so we can return from fullscreen mode when things get ugly
557		XF86DGAForkApp(DefaultScreen(x_display));
558		#endif
559	+	#endif
560
561		#ifdef ENABLE_MON
562		// Initialize mon
563		mon_init();
564		#endif
565
566	+	#if !EMULATED_PPC
567	+	// Create and install stacks for signal handlers
568	+	for (int i = 0; i < SIG_STACK_COUNT; i++) {
569	+	void *sig_stack = malloc(SIG_STACK_SIZE);
570	+	D(bug("Signal stack %d at %p\n", i, sig_stack));
571	+	if (sig_stack == NULL) {
572	+	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
573	+	goto quit;
574	+	}
575	+	sig_stacks[i].ss_sp = sig_stack;
576	+	sig_stacks[i].ss_flags = 0;
577	+	sig_stacks[i].ss_size = SIG_STACK_SIZE;
578	+	}
579	+	sig_stack_id = 0;
580	+	if (sigaltstack(&sig_stacks[0], NULL) < 0) {
581	+	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
582	+	ErrorAlert(str);
583	+	goto quit;
584	+	}
585	+	#endif
586	+
587	+	#if !EMULATED_PPC
588	+	// Install SIGSEGV and SIGBUS handlers
589	+	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
590	+	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
591	+	sigsegv_action.sa_sigaction = sigsegv_handler;
592	+	sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
593	+	#ifdef HAVE_SIGNAL_SA_RESTORER
594	+	sigsegv_action.sa_restorer = NULL;
595	+	#endif
596	+	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
597	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
598	+	ErrorAlert(str);
599	+	goto quit;
600	+	}
601	+	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
602	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
603	+	ErrorAlert(str);
604	+	goto quit;
605	+	}
606	+	#else
607	+	// Install SIGSEGV handler for CPU emulator
608	+	if (!sigsegv_install_handler(sigsegv_handler)) {
609	+	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
610	+	ErrorAlert(str);
611	+	goto quit;
612	+	}
613	+	#endif
614	+
615	+	// Initialize VM system
616	+	vm_init();
617	+
618		// Get system info
619		PVR = 0x00040000;                       // Default: 604
620		CPUClockSpeed = 100000000;      // Default: 100MHz
621		BusClockSpeed = 100000000;      // Default: 100MHz
622	<	#if !EMULATED_PPC
622	>	TimebaseSpeed =  25000000;      // Default:  25MHz
623	>	#if EMULATED_PPC
624	>	PVR = 0x000c0000;                       // Default: 7400 (with AltiVec)
625	>	#elif defined(__APPLE__) && defined(__MACH__)
626	>	proc_file = popen("ioreg -c IOPlatformDevice", "r");
627	>	if (proc_file) {
628	>	char line[256];
629	>	bool powerpc_node = false;
630	>	while (fgets(line, sizeof(line) - 1, proc_file)) {
631	>	// Read line
632	>	int len = strlen(line);
633	>	if (len == 0)
634	>	continue;
635	>	line[len - 1] = 0;
636	>
637	>	// Parse line
638	>	if (strstr(line, "o PowerPC,"))
639	>	powerpc_node = true;
640	>	else if (powerpc_node) {
641	>	uint32 value;
642	>	char head[256];
643	>	if (sscanf(line, "%[ |]\"cpu-version\" = <%x>", head, &value) == 2)
644	>	PVR = value;
645	>	else if (sscanf(line, "%[ |]\"clock-frequency\" = <%x>", head, &value) == 2)
646	>	CPUClockSpeed = value;
647	>	else if (sscanf(line, "%[ |]\"bus-frequency\" = <%x>", head, &value) == 2)
648	>	BusClockSpeed = value;
649	>	else if (sscanf(line, "%[ |]\"timebase-frequency\" = <%x>", head, &value) == 2)
650	>	TimebaseSpeed = value;
651	>	else if (strchr(line, '}'))
652	>	powerpc_node = false;
653	>	}
654	>	}
655	>	fclose(proc_file);
656	>	} else {
657	>	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
658	>	WarningAlert(str);
659	>	}
660	>	#else
661		proc_file = fopen("/proc/cpuinfo", "r");
662		if (proc_file) {
663	+	// CPU specs from Linux kernel
664	+	// TODO: make it more generic with features (e.g. AltiVec) and
665	+	// cache information and friends for NameRegistry
666	+	static const struct {
667	+	uint32 pvr_mask;
668	+	uint32 pvr_value;
669	+	const char *cpu_name;
670	+	}
671	+	cpu_specs[] = {
672	+	{ 0xffff0000, 0x00010000, "601" },
673	+	{ 0xffff0000, 0x00030000, "603" },
674	+	{ 0xffff0000, 0x00060000, "603e" },
675	+	{ 0xffff0000, 0x00070000, "603ev" },
676	+	{ 0xffff0000, 0x00040000, "604" },
677	+	{ 0xfffff000, 0x00090000, "604e" },
678	+	{ 0xffff0000, 0x00090000, "604r" },
679	+	{ 0xffff0000, 0x000a0000, "604ev" },
680	+	{ 0xffffffff, 0x00084202, "740/750" },
681	+	{ 0xfffff000, 0x00083000, "745/755" },
682	+	{ 0xfffffff0, 0x00080100, "750CX" },
683	+	{ 0xfffffff0, 0x00082200, "750CX" },
684	+	{ 0xfffffff0, 0x00082210, "750CXe" },
685	+	{ 0xffffff00, 0x70000100, "750FX" },
686	+	{ 0xffffffff, 0x70000200, "750FX" },
687	+	{ 0xffff0000, 0x70000000, "750FX" },
688	+	{ 0xffff0000, 0x70020000, "750GX" },
689	+	{ 0xffff0000, 0x00080000, "740/750" },
690	+	{ 0xffffffff, 0x000c1101, "7400 (1.1)" },
691	+	{ 0xffff0000, 0x000c0000, "7400" },
692	+	{ 0xffff0000, 0x800c0000, "7410" },
693	+	{ 0xffffffff, 0x80000200, "7450" },
694	+	{ 0xffffffff, 0x80000201, "7450" },
695	+	{ 0xffff0000, 0x80000000, "7450" },
696	+	{ 0xffffff00, 0x80010100, "7455" },
697	+	{ 0xffffffff, 0x80010200, "7455" },
698	+	{ 0xffff0000, 0x80010000, "7455" },
699	+	{ 0xffff0000, 0x80020000, "7457" },
700	+	{ 0xffff0000, 0x80030000, "7447A" },
701	+	{ 0x7fff0000, 0x00810000, "82xx" },
702	+	{ 0x7fff0000, 0x00820000, "8280" },
703	+	{ 0xffff0000, 0x00400000, "Power3 (630)" },
704	+	{ 0xffff0000, 0x00410000, "Power3 (630+)" },
705	+	{ 0xffff0000, 0x00360000, "I-star" },
706	+	{ 0xffff0000, 0x00370000, "S-star" },
707	+	{ 0xffff0000, 0x00350000, "Power4" },
708	+	{ 0xffff0000, 0x00390000, "PPC970" },
709	+	{ 0, 0, 0 }
710	+	};
711	+
712		char line[256];
713		while(fgets(line, 255, proc_file)) {
714		// Read line
#	Line 390 | Line 720 | int main(int argc, char **argv)
720		// Parse line
721		int i;
722		char value[256];
723	<	if (sscanf(line, "cpu : %s", value) == 1) {
724	<	if (strcmp(value, "601") == 0)
725	<	PVR = 0x00010000;
726	<	else if (strcmp(value, "603") == 0)
727	<	PVR = 0x00030000;
728	<	else if (strcmp(value, "604") == 0)
729	<	PVR = 0x00040000;
730	<	else if (strcmp(value, "603e") == 0)
731	<	PVR = 0x00060000;
732	<	else if (strcmp(value, "603ev") == 0)
733	<	PVR = 0x00070000;
404	<	else if (strcmp(value, "604e") == 0)
405	<	PVR = 0x00090000;
406	<	else if (strcmp(value, "604ev5") == 0)
407	<	PVR = 0x000a0000;
408	<	else if (strcmp(value, "750") == 0)
409	<	PVR = 0x00080000;
410	<	else if (strcmp(value, "821") == 0)
411	<	PVR = 0x00320000;
412	<	else if (strcmp(value, "860") == 0)
413	<	PVR = 0x00500000;
414	<	else
723	>	if (sscanf(line, "cpu : %[0-9A-Za-a]", value) == 1) {
724	>	// Search by name
725	>	const char *cpu_name = NULL;
726	>	for (int i = 0; cpu_specs[i].pvr_mask != 0; i++) {
727	>	if (strcmp(cpu_specs[i].cpu_name, value) == 0) {
728	>	cpu_name = cpu_specs[i].cpu_name;
729	>	PVR = cpu_specs[i].pvr_value;
730	>	break;
731	>	}
732	>	}
733	>	if (cpu_name == NULL)
734		printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
735	+	else
736	+	printf("Found a PowerPC %s processor\n", cpu_name);
737		}
738		if (sscanf(line, "clock : %dMHz", &i) == 1)
739		CPUClockSpeed = BusClockSpeed = i * 1000000;
#	Line 422 | Line 743 | int main(int argc, char **argv)
743		sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
744		WarningAlert(str);
745		}
746	+
747	+	// Get actual bus frequency
748	+	proc_file = fopen("/proc/device-tree/clock-frequency", "r");
749	+	if (proc_file) {
750	+	union { uint8 b[4]; uint32 l; } value;
751	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
752	+	BusClockSpeed = value.l;
753	+	fclose(proc_file);
754	+	}
755	+
756	+	// Get actual timebase frequency
757	+	TimebaseSpeed = BusClockSpeed / 4;
758	+	DIR *cpus_dir;
759	+	if ((cpus_dir = opendir("/proc/device-tree/cpus")) != NULL) {
760	+	struct dirent *cpu_entry;
761	+	while ((cpu_entry = readdir(cpus_dir)) != NULL) {
762	+	if (strstr(cpu_entry->d_name, "PowerPC,") == cpu_entry->d_name) {
763	+	char timebase_freq_node[256];
764	+	sprintf(timebase_freq_node, "/proc/device-tree/cpus/%s/timebase-frequency", cpu_entry->d_name);
765	+	proc_file = fopen(timebase_freq_node, "r");
766	+	if (proc_file) {
767	+	union { uint8 b[4]; uint32 l; } value;
768	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
769	+	TimebaseSpeed = value.l;
770	+	fclose(proc_file);
771	+	}
772	+	}
773	+	}
774	+	closedir(cpus_dir);
775	+	}
776		#endif
777	+	// Remap any newer G4/G5 processor to plain G4 for compatibility
778	+	switch (PVR >> 16) {
779	+	case 0x8000:                            // 7450
780	+	case 0x8001:                            // 7455
781	+	case 0x8002:                            // 7457
782	+	case 0x0039:                            //  970
783	+	PVR = 0x000c0000;               // 7400
784	+	break;
785	+	}
786		D(bug("PVR: %08x (assumed)\n", PVR));
787
788		// Init system routines
#	Line 446 | Line 806 | int main(int argc, char **argv)
806		goto quit;
807		}
808
809	+	#ifndef PAGEZERO_HACK
810		// Create Low Memory area (0x0000..0x3000)
811	<	if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
811	>	if (vm_mac_acquire(0, 0x3000) < 0) {
812		sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
813		ErrorAlert(str);
814		goto quit;
815		}
816		lm_area_mapped = true;
817	+	#endif
818
819		// Create areas for Kernel Data
820	<	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
821	<	if (kernel_area == -1) {
822	<	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
820	>	if (!kernel_data_init())
821	>	goto quit;
822	>	kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE);
823	>	emulator_data = &kernel_data->ed;
824	>	KernelDataAddr = KERNEL_DATA_BASE;
825	>	D(bug("Kernel Data at %p (%08x)\n", kernel_data, KERNEL_DATA_BASE));
826	>	D(bug("Emulator Data at %p (%08x)\n", emulator_data, KERNEL_DATA_BASE + offsetof(KernelData, ed)));
827	>
828	>	// Create area for DR Cache
829	>	if (vm_mac_acquire(DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) {
830	>	sprintf(str, GetString(STR_DR_EMULATOR_MMAP_ERR), strerror(errno));
831		ErrorAlert(str);
832		goto quit;
833		}
834	<	if (shmat(kernel_area, (void *)KERNEL_DATA_BASE, 0) < 0) {
835	<	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
834	>	dr_emulator_area_mapped = true;
835	>	if (vm_mac_acquire(DR_CACHE_BASE, DR_CACHE_SIZE) < 0) {
836	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
837		ErrorAlert(str);
838		goto quit;
839		}
840	<	if (shmat(kernel_area, (void *)KERNEL_DATA2_BASE, 0) < 0) {
841	<	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
840	>	dr_cache_area_mapped = true;
841	>	#if !EMULATED_PPC
842	>	if (vm_protect((char *)DR_CACHE_BASE, DR_CACHE_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
843	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
844		ErrorAlert(str);
845		goto quit;
846		}
847	<	kernel_data = (KernelData *)KERNEL_DATA_BASE;
848	<	emulator_data = &kernel_data->ed;
849	<	KernelDataAddr = KERNEL_DATA_BASE;
477	<	D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
847	>	#endif
848	>	DRCacheAddr = DR_CACHE_BASE;
849	>	D(bug("DR Cache at %p\n", DRCacheAddr));
850
851		// Create area for SheepShaver data
852		if (!SheepMem::Init()) {
#	Line 484 | Line 856 | int main(int argc, char **argv)
856		}
857
858		// Create area for Mac ROM
859	<	if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
859	>	if (vm_mac_acquire(ROM_BASE, ROM_AREA_SIZE) < 0) {
860		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
861		ErrorAlert(str);
862		goto quit;
863		}
864	<	#if !EMULATED_PPC || defined(__powerpc__)
865	<	if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
864	>	ROMBaseHost = Mac2HostAddr(ROM_BASE);
865	>	#if !EMULATED_PPC
866	>	if (vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
867		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
868		ErrorAlert(str);
869		goto quit;
870		}
871		#endif
872		rom_area_mapped = true;
873	<	D(bug("ROM area at %08x\n", ROM_BASE));
873	>	D(bug("ROM area at %p (%08x)\n", ROMBaseHost, ROM_BASE));
874
875		// Create area for Mac RAM
876		RAMSize = PrefsFindInt32("ramsize");
#	Line 506 | Line 879 | int main(int argc, char **argv)
879		RAMSize = 8*1024*1024;
880		}
881
882	<	if (vm_acquire_fixed((char *)RAM_BASE, RAMSize) < 0) {
882	>	if (vm_mac_acquire(RAM_BASE, RAMSize) < 0) {
883		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
884		ErrorAlert(str);
885		goto quit;
886		}
887	+	RAMBaseHost = Mac2HostAddr(RAM_BASE);
888		#if !EMULATED_PPC
889	<	if (vm_protect((char *)RAM_BASE, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
889	>	if (vm_protect(RAMBaseHost, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
890		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
891		ErrorAlert(str);
892		goto quit;
#	Line 520 | Line 894 | int main(int argc, char **argv)
894		#endif
895		RAMBase = RAM_BASE;
896		ram_area_mapped = true;
897	<	D(bug("RAM area at %08x\n", RAMBase));
897	>	D(bug("RAM area at %p (%08x)\n", RAMBaseHost, RAMBase));
898
899		if (RAMBase > ROM_BASE) {
900		ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR));
#	Line 556 | Line 930 | int main(int argc, char **argv)
930		}
931		delete[] rom_tmp;
932
933	<	// Load NVRAM
934	<	XPRAMInit();
561	<
562	<	// Set boot volume
563	<	i16 = PrefsFindInt32("bootdrive");
564	<	XPRAM[0x1378] = i16 >> 8;
565	<	XPRAM[0x1379] = i16 & 0xff;
566	<	i16 = PrefsFindInt32("bootdriver");
567	<	XPRAM[0x137a] = i16 >> 8;
568	<	XPRAM[0x137b] = i16 & 0xff;
569	<
570	<	// Create BootGlobs at top of Mac memory
571	<	memset((void *)(RAMBase + RAMSize - 4096), 0, 4096);
572	<	BootGlobsAddr = RAMBase + RAMSize - 0x1c;
573	<	boot_globs = (uint32 *)BootGlobsAddr;
574	<	boot_globs[-5] = htonl(RAMBase + RAMSize);      // MemTop
575	<	boot_globs[0] = htonl(RAMBase);                         // First RAM bank
576	<	boot_globs[1] = htonl(RAMSize);
577	<	boot_globs[2] = htonl((uint32)-1);                      // End of bank table
578	<
579	<	// Init thunks
580	<	if (!ThunksInit())
581	<	goto quit;
582	<
583	<	// Init drivers
584	<	SonyInit();
585	<	DiskInit();
586	<	CDROMInit();
587	<	SCSIInit();
588	<
589	<	// Init external file system
590	<	ExtFSInit();
591	<
592	<	// Init audio
593	<	AudioInit();
594	<
595	<	// Init network
596	<	EtherInit();
597	<
598	<	// Init serial ports
599	<	SerialInit();
600	<
601	<	// Init Time Manager
602	<	TimerInit();
603	<
604	<	// Init clipboard
605	<	ClipInit();
606	<
607	<	// Init video
608	<	if (!VideoInit())
609	<	goto quit;
610	<
611	<	// Install ROM patches
612	<	if (!PatchROM()) {
613	<	ErrorAlert(GetString(STR_UNSUPPORTED_ROM_TYPE_ERR));
933	>	// Initialize everything
934	>	if (!InitAll())
935		goto quit;
936	<	}
936	>	D(bug("Initialization complete\n"));
937
938		// Clear caches (as we loaded and patched code) and write protect ROM
939		#if !EMULATED_PPC
940	<	MakeExecutable(0, (void *)ROM_BASE, ROM_AREA_SIZE);
620	<	#endif
621	<	vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
622	<
623	<	// Initialize Kernel Data
624	<	memset(kernel_data, 0, sizeof(KernelData));
625	<	if (ROMType == ROMTYPE_NEWWORLD) {
626	<	uintptr of_dev_tree = SheepMem::Reserve(4 * sizeof(uint32));
627	<	memset((void *)of_dev_tree, 0, 4 * sizeof(uint32));
628	<	uintptr vector_lookup_tbl = SheepMem::Reserve(128);
629	<	uintptr vector_mask_tbl = SheepMem::Reserve(64);
630	<	memset((uint8 *)kernel_data + 0xb80, 0x3d, 0x80);
631	<	memset((void *)vector_lookup_tbl, 0, 128);
632	<	memset((void *)vector_mask_tbl, 0, 64);
633	<	kernel_data->v[0xb80 >> 2] = htonl(ROM_BASE);
634	<	kernel_data->v[0xb84 >> 2] = htonl(of_dev_tree);                        // OF device tree base
635	<	kernel_data->v[0xb90 >> 2] = htonl(vector_lookup_tbl);
636	<	kernel_data->v[0xb94 >> 2] = htonl(vector_mask_tbl);
637	<	kernel_data->v[0xb98 >> 2] = htonl(ROM_BASE);                           // OpenPIC base
638	<	kernel_data->v[0xbb0 >> 2] = htonl(0);                                          // ADB base
639	<	kernel_data->v[0xc20 >> 2] = htonl(RAMSize);
640	<	kernel_data->v[0xc24 >> 2] = htonl(RAMSize);
641	<	kernel_data->v[0xc30 >> 2] = htonl(RAMSize);
642	<	kernel_data->v[0xc34 >> 2] = htonl(RAMSize);
643	<	kernel_data->v[0xc38 >> 2] = htonl(0x00010020);
644	<	kernel_data->v[0xc3c >> 2] = htonl(0x00200001);
645	<	kernel_data->v[0xc40 >> 2] = htonl(0x00010000);
646	<	kernel_data->v[0xc50 >> 2] = htonl(RAMBase);
647	<	kernel_data->v[0xc54 >> 2] = htonl(RAMSize);
648	<	kernel_data->v[0xf60 >> 2] = htonl(PVR);
649	<	kernel_data->v[0xf64 >> 2] = htonl(CPUClockSpeed);
650	<	kernel_data->v[0xf68 >> 2] = htonl(BusClockSpeed);
651	<	kernel_data->v[0xf6c >> 2] = htonl(CPUClockSpeed);
652	<	} else {
653	<	kernel_data->v[0xc80 >> 2] = htonl(RAMSize);
654	<	kernel_data->v[0xc84 >> 2] = htonl(RAMSize);
655	<	kernel_data->v[0xc90 >> 2] = htonl(RAMSize);
656	<	kernel_data->v[0xc94 >> 2] = htonl(RAMSize);
657	<	kernel_data->v[0xc98 >> 2] = htonl(0x00010020);
658	<	kernel_data->v[0xc9c >> 2] = htonl(0x00200001);
659	<	kernel_data->v[0xca0 >> 2] = htonl(0x00010000);
660	<	kernel_data->v[0xcb0 >> 2] = htonl(RAMBase);
661	<	kernel_data->v[0xcb4 >> 2] = htonl(RAMSize);
662	<	kernel_data->v[0xf80 >> 2] = htonl(PVR);
663	<	kernel_data->v[0xf84 >> 2] = htonl(CPUClockSpeed);
664	<	kernel_data->v[0xf88 >> 2] = htonl(BusClockSpeed);
665	<	kernel_data->v[0xf8c >> 2] = htonl(CPUClockSpeed);
666	<	}
667	<
668	<	// Initialize extra low memory
669	<	D(bug("Initializing Low Memory...\n"));
670	<	memset(NULL, 0, 0x3000);
671	<	WriteMacInt32(XLM_SIGNATURE, FOURCC('B','a','a','h'));                  // Signature to detect SheepShaver
672	<	WriteMacInt32(XLM_KERNEL_DATA, KernelDataAddr);                                 // For trap replacement routines
673	<	WriteMacInt32(XLM_PVR, PVR);                                                                    // Theoretical PVR
674	<	WriteMacInt32(XLM_BUS_CLOCK, BusClockSpeed);                                    // For DriverServicesLib patch
675	<	WriteMacInt16(XLM_EXEC_RETURN_OPCODE, M68K_EXEC_RETURN);                // For Execute68k() (RTS from the executed 68k code will jump here and end 68k mode)
676	<	WriteMacInt32(XLM_ZERO_PAGE, SheepMem::ZeroPage());                             // Pointer to read-only page with all bits set to 0
677	<	#if !EMULATED_PPC
678	<	WriteMacInt32(XLM_TOC, (uint32)TOC);                                                            // TOC pointer of emulator
940	>	flush_icache_range(ROM_BASE, ROM_BASE + ROM_AREA_SIZE);
941		#endif
942	<	WriteMacInt32(XLM_ETHER_INIT, NativeFunction(NATIVE_ETHER_INIT));       // DLPI ethernet driver functions
681	<	WriteMacInt32(XLM_ETHER_TERM, NativeFunction(NATIVE_ETHER_TERM));
682	<	WriteMacInt32(XLM_ETHER_OPEN, NativeFunction(NATIVE_ETHER_OPEN));
683	<	WriteMacInt32(XLM_ETHER_CLOSE, NativeFunction(NATIVE_ETHER_CLOSE));
684	<	WriteMacInt32(XLM_ETHER_WPUT, NativeFunction(NATIVE_ETHER_WPUT));
685	<	WriteMacInt32(XLM_ETHER_RSRV, NativeFunction(NATIVE_ETHER_RSRV));
686	<	WriteMacInt32(XLM_VIDEO_DOIO, NativeFunction(NATIVE_VIDEO_DO_DRIVER_IO));
687	<	D(bug("Low Memory initialized\n"));
942	>	vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
943
944		// Start 60Hz thread
945	+	tick_thread_cancel = false;
946		tick_thread_active = (pthread_create(&tick_thread, NULL, tick_func, NULL) == 0);
947		D(bug("Tick thread installed (%ld)\n", tick_thread));
948
949		// Start NVRAM watchdog thread
950		memcpy(last_xpram, XPRAM, XPRAM_SIZE);
951	+	nvram_thread_cancel = false;
952		nvram_thread_active = (pthread_create(&nvram_thread, NULL, nvram_func, NULL) == 0);
953		D(bug("NVRAM thread installed (%ld)\n", nvram_thread));
954
955		#if !EMULATED_PPC
699	–	// Create and install stacks for signal handlers
700	–	sig_stack = malloc(SIG_STACK_SIZE);
701	–	D(bug("Signal stack at %p\n", sig_stack));
702	–	if (sig_stack == NULL) {
703	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
704	–	goto quit;
705	–	}
706	–	extra_stack = malloc(SIG_STACK_SIZE);
707	–	D(bug("Extra stack at %p\n", extra_stack));
708	–	if (extra_stack == NULL) {
709	–	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
710	–	goto quit;
711	–	}
712	–	struct sigaltstack new_stack;
713	–	new_stack.ss_sp = sig_stack;
714	–	new_stack.ss_flags = 0;
715	–	new_stack.ss_size = SIG_STACK_SIZE;
716	–	if (sigaltstack(&new_stack, NULL) < 0) {
717	–	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
718	–	ErrorAlert(str);
719	–	goto quit;
720	–	}
721	–	#endif
722	–
723	–	#if !EMULATED_PPC
724	–	// Install SIGSEGV handler
725	–	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
726	–	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
727	–	sigsegv_action.sa_handler = (__sighandler_t)sigsegv_handler;
728	–	sigsegv_action.sa_flags = SA_ONSTACK;
729	–	sigsegv_action.sa_restorer = NULL;
730	–	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
731	–	sprintf(str, GetString(STR_SIGSEGV_INSTALL_ERR), strerror(errno));
732	–	ErrorAlert(str);
733	–	goto quit;
734	–	}
735	–
956		// Install SIGILL handler
957		sigemptyset(&sigill_action.sa_mask);    // Block interrupts during ILL handling
958		sigaddset(&sigill_action.sa_mask, SIGUSR2);
959	<	sigill_action.sa_handler = (__sighandler_t)sigill_handler;
960	<	sigill_action.sa_flags = SA_ONSTACK;
959	>	sigill_action.sa_sigaction = sigill_handler;
960	>	sigill_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
961	>	#ifdef HAVE_SIGNAL_SA_RESTORER
962		sigill_action.sa_restorer = NULL;
963	+	#endif
964		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
965		sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
966		ErrorAlert(str);
#	Line 746 | Line 968 | int main(int argc, char **argv)
968		}
969		#endif
970
971	+	#if !EMULATED_PPC
972		// Install interrupt signal handler
973		sigemptyset(&sigusr2_action.sa_mask);
974	<	sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
975	<	sigusr2_action.sa_flags = 0;
976	<	#if !EMULATED_PPC
754	<	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART;
755	<	#endif
974	>	sigusr2_action.sa_sigaction = sigusr2_handler;
975	>	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO;
976	>	#ifdef HAVE_SIGNAL_SA_RESTORER
977		sigusr2_action.sa_restorer = NULL;
978	+	#endif
979		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
980		sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
981		ErrorAlert(str);
982		goto quit;
983		}
984	+	#endif
985
986		// Get my thread ID and execute MacOS thread function
987		emul_thread = pthread_self();
#	Line 784 | Line 1007 | static void Quit(void)
1007
1008		// Stop 60Hz thread
1009		if (tick_thread_active) {
1010	+	tick_thread_cancel = true;
1011		pthread_cancel(tick_thread);
1012		pthread_join(tick_thread, NULL);
1013		}
1014
1015		// Stop NVRAM watchdog thread
1016		if (nvram_thread_active) {
1017	+	nvram_thread_cancel = true;
1018		pthread_cancel(nvram_thread);
1019		pthread_join(nvram_thread, NULL);
1020		}
1021
1022		#if !EMULATED_PPC
1023	<	// Uninstall SIGSEGV handler
1023	>	// Uninstall SIGSEGV and SIGBUS handlers
1024		sigemptyset(&sigsegv_action.sa_mask);
1025		sigsegv_action.sa_handler = SIG_DFL;
1026		sigsegv_action.sa_flags = 0;
1027		sigaction(SIGSEGV, &sigsegv_action, NULL);
1028	+	sigaction(SIGBUS, &sigsegv_action, NULL);
1029
1030		// Uninstall SIGILL handler
1031		sigemptyset(&sigill_action.sa_mask);
1032		sigill_action.sa_handler = SIG_DFL;
1033		sigill_action.sa_flags = 0;
1034		sigaction(SIGILL, &sigill_action, NULL);
809	–	#endif
1035
1036	<	// Save NVRAM
1037	<	XPRAMExit();
1038	<
1039	<	// Exit clipboard
1040	<	ClipExit();
1041	<
1042	<	// Exit Time Manager
818	<	TimerExit();
819	<
820	<	// Exit serial
821	<	SerialExit();
822	<
823	<	// Exit network
824	<	EtherExit();
825	<
826	<	// Exit audio
827	<	AudioExit();
828	<
829	<	// Exit video
830	<	VideoExit();
831	<
832	<	// Exit external file system
833	<	ExtFSExit();
1036	>	// Delete stacks for signal handlers
1037	>	for (int i = 0; i < SIG_STACK_COUNT; i++) {
1038	>	void *sig_stack = sig_stacks[i].ss_sp;
1039	>	if (sig_stack)
1040	>	free(sig_stack);
1041	>	}
1042	>	#endif
1043
1044	<	// Exit drivers
1045	<	SCSIExit();
837	<	CDROMExit();
838	<	DiskExit();
839	<	SonyExit();
1044	>	// Deinitialize everything
1045	>	ExitAll();
1046
1047		// Delete SheepShaver globals
1048		SheepMem::Exit();
1049
1050		// Delete RAM area
1051		if (ram_area_mapped)
1052	<	vm_release((char *)RAM_BASE, RAMSize);
1052	>	vm_mac_release(RAM_BASE, RAMSize);
1053
1054		// Delete ROM area
1055		if (rom_area_mapped)
1056	<	vm_release((char *)ROM_BASE, ROM_AREA_SIZE);
1056	>	vm_mac_release(ROM_BASE, ROM_AREA_SIZE);
1057	>
1058	>	// Delete DR cache areas
1059	>	if (dr_emulator_area_mapped)
1060	>	vm_mac_release(DR_EMULATOR_BASE, DR_EMULATOR_SIZE);
1061	>	if (dr_cache_area_mapped)
1062	>	vm_mac_release(DR_CACHE_BASE, DR_CACHE_SIZE);
1063
1064		// Delete Kernel Data area
1065	<	if (kernel_area >= 0) {
854	<	shmdt((void *)KERNEL_DATA_BASE);
855	<	shmdt((void *)KERNEL_DATA2_BASE);
856	<	shmctl(kernel_area, IPC_RMID, NULL);
857	<	}
1065	>	kernel_data_exit();
1066
1067		// Delete Low Memory area
1068		if (lm_area_mapped)
1069	<	munmap((char *)0x0000, 0x3000);
1069	>	vm_mac_release(0, 0x3000);
1070
1071		// Close /dev/zero
1072		if (zero_fd > 0)
#	Line 876 | Line 1084 | static void Quit(void)
1084		#endif
1085
1086		// Close X11 server connection
1087	+	#ifndef USE_SDL_VIDEO
1088		if (x_display)
1089		XCloseDisplay(x_display);
1090	+	#endif
1091
1092		exit(0);
1093		}
1094
1095
1096		/*
1097	+	*  Initialize Kernel Data segments
1098	+	*/
1099	+
1100	+	#if defined(__CYGWIN__)
1101	+	#define WIN32_LEAN_AND_MEAN
1102	+	#include <windows.h>
1103	+
1104	+	static HANDLE kernel_handle;                            // Shared memory handle for Kernel Data
1105	+	static DWORD allocation_granule;                        // Minimum size of allocateable are (64K)
1106	+	static DWORD kernel_area_size;                          // Size of Kernel Data area
1107	+	#endif
1108	+
1109	+	static bool kernel_data_init(void)
1110	+	{
1111	+	char str[256];
1112	+	#ifdef _WIN32
1113	+	SYSTEM_INFO si;
1114	+	GetSystemInfo(&si);
1115	+	allocation_granule = si.dwAllocationGranularity;
1116	+	kernel_area_size = (KERNEL_AREA_SIZE + allocation_granule - 1) & -allocation_granule;
1117	+
1118	+	char rcs[10];
1119	+	LPVOID kernel_addr;
1120	+	kernel_handle = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE, 0, kernel_area_size, NULL);
1121	+	if (kernel_handle == NULL) {
1122	+	sprintf(rcs, "%d", GetLastError());
1123	+	sprintf(str, GetString(STR_KD_SHMGET_ERR), rcs);
1124	+	ErrorAlert(str);
1125	+	return false;
1126	+	}
1127	+	kernel_addr = (LPVOID)Mac2HostAddr(KERNEL_DATA_BASE & -allocation_granule);
1128	+	if (MapViewOfFileEx(kernel_handle, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, kernel_area_size, kernel_addr) != kernel_addr) {
1129	+	sprintf(rcs, "%d", GetLastError());
1130	+	sprintf(str, GetString(STR_KD_SHMAT_ERR), rcs);
1131	+	ErrorAlert(str);
1132	+	return false;
1133	+	}
1134	+	kernel_addr = (LPVOID)Mac2HostAddr(KERNEL_DATA2_BASE & -allocation_granule);
1135	+	if (MapViewOfFileEx(kernel_handle, FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, kernel_area_size, kernel_addr) != kernel_addr) {
1136	+	sprintf(rcs, "%d", GetLastError());
1137	+	sprintf(str, GetString(STR_KD2_SHMAT_ERR), rcs);
1138	+	ErrorAlert(str);
1139	+	return false;
1140	+	}
1141	+	#else
1142	+	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
1143	+	if (kernel_area == -1) {
1144	+	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
1145	+	ErrorAlert(str);
1146	+	return false;
1147	+	}
1148	+	if (shmat(kernel_area, Mac2HostAddr(KERNEL_DATA_BASE), 0) < 0) {
1149	+	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
1150	+	ErrorAlert(str);
1151	+	return false;
1152	+	}
1153	+	if (shmat(kernel_area, Mac2HostAddr(KERNEL_DATA2_BASE), 0) < 0) {
1154	+	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
1155	+	ErrorAlert(str);
1156	+	return false;
1157	+	}
1158	+	#endif
1159	+	return true;
1160	+	}
1161	+
1162	+
1163	+	/*
1164	+	*  Deallocate Kernel Data segments
1165	+	*/
1166	+
1167	+	static void kernel_data_exit(void)
1168	+	{
1169	+	#ifdef _WIN32
1170	+	if (kernel_handle) {
1171	+	UnmapViewOfFile(Mac2HostAddr(KERNEL_DATA_BASE & -allocation_granule));
1172	+	UnmapViewOfFile(Mac2HostAddr(KERNEL_DATA2_BASE & -allocation_granule));
1173	+	CloseHandle(kernel_handle);
1174	+	}
1175	+	#else
1176	+	if (kernel_area >= 0) {
1177	+	shmdt(Mac2HostAddr(KERNEL_DATA_BASE));
1178	+	shmdt(Mac2HostAddr(KERNEL_DATA2_BASE));
1179	+	shmctl(kernel_area, IPC_RMID, NULL);
1180	+	}
1181	+	#endif
1182	+	}
1183	+
1184	+
1185	+	/*
1186		*  Jump into Mac ROM, start 680x0 emulator
1187		*/
1188
#	Line 1012 | Line 1311 | void Dump68kRegs(M68kRegisters *r)
1311		*  Make code executable
1312		*/
1313
1314	<	void MakeExecutable(int dummy, void *start, uint32 length)
1314	>	void MakeExecutable(int dummy, uint32 start, uint32 length)
1315		{
1316	<	if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE)))
1316	>	if ((start >= ROM_BASE) && (start < (ROM_BASE + ROM_SIZE)))
1317		return;
1318		#if EMULATED_PPC
1319	<	FlushCodeCache((uintptr)start, (uintptr)start + length);
1319	>	FlushCodeCache(start, start + length);
1320		#else
1321	<	flush_icache_range(start, (void *)((uintptr)start + length));
1321	>	flush_icache_range(start, start + length);
1322		#endif
1323		}
1324
1325
1326		/*
1327	<	*  Patch things after system startup (gets called by disk driver accRun routine)
1327	>	*  NVRAM watchdog thread (saves NVRAM every minute)
1328		*/
1329
1330	<	void PatchAfterStartup(void)
1330	>	static void nvram_watchdog(void)
1331		{
1332	<	ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1333	<	InstallExtFS();
1332	>	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1333	>	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1334	>	SaveXPRAM();
1335	>	}
1336		}
1337
1037	–
1038	–	/*
1039	–	*  NVRAM watchdog thread (saves NVRAM every minute)
1040	–	*/
1041	–
1338		static void *nvram_func(void *arg)
1339		{
1340	<	struct timespec req = {60, 0};  // 1 minute
1341	<
1342	<	for (;;) {
1343	<	pthread_testcancel();
1048	<	nanosleep(&req, NULL);
1049	<	pthread_testcancel();
1050	<	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1051	<	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1052	<	SaveXPRAM();
1053	<	}
1340	>	while (!nvram_thread_cancel) {
1341	>	for (int i=0; i<60 && !nvram_thread_cancel; i++)
1342	>	Delay_usec(999999);             // Only wait 1 second so we quit promptly when nvram_thread_cancel becomes true
1343	>	nvram_watchdog();
1344		}
1345		return NULL;
1346		}
#	Line 1063 | Line 1353 | static void *nvram_func(void *arg)
1353		static void *tick_func(void *arg)
1354		{
1355		int tick_counter = 0;
1356	<	struct timespec req = {0, 16625000};
1356	>	uint64 start = GetTicks_usec();
1357	>	int64 ticks = 0;
1358	>	uint64 next = GetTicks_usec();
1359
1360	<	for (;;) {
1360	>	while (!tick_thread_cancel) {
1361
1362		// Wait
1363	<	nanosleep(&req, NULL);
1363	>	next += 16625;
1364	>	int64 delay = next - GetTicks_usec();
1365	>	if (delay > 0)
1366	>	Delay_usec(delay);
1367	>	else if (delay < -16625)
1368	>	next = GetTicks_usec();
1369	>	ticks++;
1370
1371		#if !EMULATED_PPC
1372		// Did we crash?
1373		if (emul_thread_fatal) {
1374
1375		// Yes, dump registers
1376	<	pt_regs *r = (pt_regs *)&sigsegv_regs;
1376	>	sigregs *r = &sigsegv_regs;
1377		char str[256];
1378	<	sprintf(str, "SIGSEGV\n"
1378	>	if (crash_reason == NULL)
1379	>	crash_reason = "SIGSEGV";
1380	>	sprintf(str, "%s\n"
1381		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1382		"  xer %08lx     cr %08lx  \n"
1383		"   r0 %08lx     r1 %08lx     r2 %08lx     r3 %08lx\n"
#	Line 1088 | Line 1388 | static void *tick_func(void *arg)
1388		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1389		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1390		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1391	+	crash_reason,
1392		r->nip, r->link, r->ctr, r->msr,
1393		r->xer, r->ccr,
1394		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1123 | Line 1424 | static void *tick_func(void *arg)
1424		TriggerInterrupt();
1425		}
1426		}
1427	+
1428	+	uint64 end = GetTicks_usec();
1429	+	D(bug("%Ld ticks in %Ld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
1430		return NULL;
1431		}
1432
#	Line 1172 | Line 1476 | struct B2_mutex {
1476		pthread_mutexattr_init(&attr);
1477		// Initialize the mutex for priority inheritance --
1478		// required for accurate timing.
1479	<	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL
1479	>	#if defined(HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL) && !defined(__CYGWIN__)
1480		pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
1481		#endif
1482		#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL)
#	Line 1243 | Line 1547 | void B2_delete_mutex(B2_mutex *mutex)
1547		*  Trigger signal USR2 from another thread
1548		*/
1549
1550	<	#if !EMULATED_PPC || ASYNC_IRQ
1550	>	#if !EMULATED_PPC
1551		void TriggerInterrupt(void)
1552		{
1553		if (ready_for_signals)
#	Line 1275 | Line 1579 | void ClearInterruptFlag(uint32 flag)
1579
1580		void DisableInterrupt(void)
1581		{
1582	+	#if EMULATED_PPC
1583	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) + 1);
1584	+	#else
1585		atomic_add((int *)XLM_IRQ_NEST, 1);
1586	+	#endif
1587		}
1588
1589
#	Line 1285 | Line 1593 | void DisableInterrupt(void)
1593
1594		void EnableInterrupt(void)
1595		{
1596	+	#if EMULATED_PPC
1597	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) - 1);
1598	+	#else
1599		atomic_add((int *)XLM_IRQ_NEST, -1);
1600	+	#endif
1601		}
1602
1603
#	Line 1293 | Line 1605 | void EnableInterrupt(void)
1605		*  USR2 handler
1606		*/
1607
1608	<	#if EMULATED_PPC
1609	<	static void sigusr2_handler(int sig)
1608	>	#if !EMULATED_PPC
1609	>	static void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1610		{
1611	<	#if ASYNC_IRQ
1612	<	extern void HandleInterrupt(void);
1613	<	HandleInterrupt();
1611	>	machine_regs *r = MACHINE_REGISTERS(scp);
1612	>
1613	>	#ifdef USE_SDL_VIDEO
1614	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1615	>	SDL_PumpEvents();
1616		#endif
1303	–	}
1304	–	#else
1305	–	static void sigusr2_handler(int sig, sigcontext_struct *sc)
1306	–	{
1307	–	pt_regs *r = sc->regs;
1617
1618		// Do nothing if interrupts are disabled
1619		if (*(int32 *)XLM_IRQ_NEST > 0)
1620		return;
1621
1622	+	#ifdef SYSTEM_CLOBBERS_R2
1623	+	// Restore pointer to Thread Local Storage
1624	+	set_r2(TOC);
1625	+	#endif
1626	+	#ifdef SYSTEM_CLOBBERS_R13
1627	+	// Restore pointer to .sdata section
1628	+	set_r13(R13);
1629	+	#endif
1630	+
1631		// Disable MacOS stack sniffer
1632		WriteMacInt32(0x110, 0);
1633
#	Line 1318 | Line 1636 | static void sigusr2_handler(int sig, sig
1636		case MODE_68K:
1637		// 68k emulator active, trigger 68k interrupt level 1
1638		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1639	<	r->ccr |= ntohl(kernel_data->v[0x674 >> 2]);
1639	>	r->cr() |= ntohl(kernel_data->v[0x674 >> 2]);
1640		break;
1641
1642		#if INTERRUPTS_IN_NATIVE_MODE
1643		case MODE_NATIVE:
1644		// 68k emulator inactive, in nanokernel?
1645	<	if (r->gpr[1] != KernelDataAddr) {
1645	>	if (r->gpr(1) != KernelDataAddr) {
1646	>
1647	>	// Set extra stack for nested interrupts
1648	>	sig_stack_acquire();
1649	>
1650		// Prepare for 68k interrupt level 1
1651		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1652		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) | ntohl(kernel_data->v[0x674 >> 2]));
1653
1654		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1655	<	atomic_add((int32 *)XLM_IRQ_NEST, 1);
1655	>	DisableInterrupt();
1656		if (ROMType == ROMTYPE_NEWWORLD)
1657		ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1658		else
1659		ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1660	+
1661	+	// Reset normal signal stack
1662	+	sig_stack_release();
1663		}
1664		break;
1665		#endif
#	Line 1345 | Line 1670 | static void sigusr2_handler(int sig, sig
1670		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1671
1672		// Set extra stack for SIGSEGV handler
1673	<	struct sigaltstack new_stack;
1349	<	new_stack.ss_sp = extra_stack;
1350	<	new_stack.ss_flags = 0;
1351	<	new_stack.ss_size = SIG_STACK_SIZE;
1352	<	sigaltstack(&new_stack, NULL);
1673	>	sig_stack_acquire();
1674		#if 1
1675		// Execute full 68k interrupt routine
1676		M68kRegisters r;
#	Line 1376 | Line 1697 | static void sigusr2_handler(int sig, sig
1697		}
1698		#endif
1699		// Reset normal signal stack
1700	<	new_stack.ss_sp = sig_stack;
1380	<	new_stack.ss_flags = 0;
1381	<	new_stack.ss_size = SIG_STACK_SIZE;
1382	<	sigaltstack(&new_stack, NULL);
1700	>	sig_stack_release();
1701		}
1702		break;
1703		#endif
#	Line 1393 | Line 1711 | static void sigusr2_handler(int sig, sig
1711		*/
1712
1713		#if !EMULATED_PPC
1714	<	static void sigsegv_handler(int sig, sigcontext_struct *sc)
1714	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp)
1715		{
1716	<	pt_regs *r = sc->regs;
1716	>	machine_regs *r = MACHINE_REGISTERS(scp);
1717
1718		// Get effective address
1719	<	uint32 addr = r->dar;
1719	>	uint32 addr = r->dar();
1720
1721	+	#ifdef SYSTEM_CLOBBERS_R2
1722	+	// Restore pointer to Thread Local Storage
1723	+	set_r2(TOC);
1724	+	#endif
1725	+	#ifdef SYSTEM_CLOBBERS_R13
1726	+	// Restore pointer to .sdata section
1727	+	set_r13(R13);
1728	+	#endif
1729	+
1730		#if ENABLE_VOSF
1731		// Handle screen fault.
1732		extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1733	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1733	>	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc()))
1734		return;
1735		#endif
1736
1737		num_segv++;
1738
1739	<	// Fault in Mac ROM or RAM?
1740	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1739	>	// Fault in Mac ROM or RAM or DR Cache?
1740	>	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));
1741		if (mac_fault) {
1742
1743		// "VM settings" during MacOS 8 installation
1744	<	if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1745	<	r->nip += 4;
1746	<	r->gpr[8] = 0;
1744	>	if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) {
1745	>	r->pc() += 4;
1746	>	r->gpr(8) = 0;
1747		return;
1748
1749		// MacOS 8.5 installation
1750	<	} else if (r->nip == ROM_BASE + 0x488140 && r->gpr[16] == 0xf8000000) {
1751	<	r->nip += 4;
1752	<	r->gpr[8] = 0;
1750	>	} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) {
1751	>	r->pc() += 4;
1752	>	r->gpr(8) = 0;
1753		return;
1754
1755		// MacOS 8 serial drivers on startup
1756	<	} else if (r->nip == ROM_BASE + 0x48e080 && (r->gpr[8] == 0xf3012002 || r->gpr[8] == 0xf3012000)) {
1757	<	r->nip += 4;
1758	<	r->gpr[8] = 0;
1756	>	} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1757	>	r->pc() += 4;
1758	>	r->gpr(8) = 0;
1759		return;
1760
1761		// MacOS 8.1 serial drivers on startup
1762	<	} else if (r->nip == ROM_BASE + 0x48c5e0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1763	<	r->nip += 4;
1762	>	} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1763	>	r->pc() += 4;
1764	>	return;
1765	>	} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1766	>	r->pc() += 4;
1767	>	return;
1768	>
1769	>	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
1770	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(16) == 0xf3012002 || r->gpr(16) == 0xf3012000)) {
1771	>	r->pc() += 4;
1772		return;
1773	<	} else if (r->nip == ROM_BASE + 0x4a10a0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1774	<	r->nip += 4;
1773	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1774	>	r->pc() += 4;
1775		return;
1776		}
1777
1778		// Get opcode and divide into fields
1779	<	uint32 opcode = *((uint32 *)r->nip);
1779	>	uint32 opcode = *((uint32 *)r->pc());
1780		uint32 primop = opcode >> 26;
1781		uint32 exop = (opcode >> 1) & 0x3ff;
1782		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1530 | Line 1865 | static void sigsegv_handler(int sig, sig
1865		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1866		case 45:        // sthu
1867		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1868	+	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1869	+	case 46:        // lmw
1870	+	if ((addr % 4) != 0) {
1871	+	uint32 ea = addr;
1872	+	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1873	+	for (int i = rd; i <= 31; i++) {
1874	+	r->gpr(i) = ReadMacInt32(ea);
1875	+	ea += 4;
1876	+	}
1877	+	r->pc() += 4;
1878	+	goto rti;
1879	+	}
1880	+	break;
1881	+	case 47:        // stmw
1882	+	if ((addr % 4) != 0) {
1883	+	uint32 ea = addr;
1884	+	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1885	+	for (int i = rd; i <= 31; i++) {
1886	+	WriteMacInt32(ea, r->gpr(i));
1887	+	ea += 4;
1888	+	}
1889	+	r->pc() += 4;
1890	+	goto rti;
1891	+	}
1892	+	break;
1893	+	#endif
1894		}
1895
1896	<	// Ignore ROM writes
1897	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1898	<	//                      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));
1896	>	// Ignore ROM writes (including to the zero page, which is read-only)
1897	>	if (transfer_type == TYPE_STORE &&
1898	>	((addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) ||
1899	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1900	>	//                      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()));
1901		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1902	<	r->gpr[ra] = addr;
1903	<	r->nip += 4;
1902	>	r->gpr(ra) = addr;
1903	>	r->pc() += 4;
1904		goto rti;
1905		}
1906
1907		// Ignore illegal memory accesses?
1908		if (PrefsFindBool("ignoresegv")) {
1909		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1910	<	r->gpr[ra] = addr;
1910	>	r->gpr(ra) = addr;
1911		if (transfer_type == TYPE_LOAD)
1912	<	r->gpr[rd] = 0;
1913	<	r->nip += 4;
1912	>	r->gpr(rd) = 0;
1913	>	r->pc() += 4;
1914		goto rti;
1915		}
1916
#	Line 1555 | Line 1918 | static void sigsegv_handler(int sig, sig
1918		if (!PrefsFindBool("nogui")) {
1919		char str[256];
1920		if (transfer_type == TYPE_LOAD || transfer_type == TYPE_STORE)
1921	<	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]);
1921	>	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));
1922		else
1923	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1923	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1924		ErrorAlert(str);
1925		QuitEmulator();
1926		return;
#	Line 1565 | Line 1928 | static void sigsegv_handler(int sig, sig
1928		}
1929
1930		// For all other errors, jump into debugger (sort of...)
1931	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1932		if (!ready_for_signals) {
1933	<	printf("SIGSEGV\n");
1934	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1933	>	printf("%s\n");
1934	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1935		printf(
1936		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1937		"  xer %08lx     cr %08lx  \n"
#	Line 1579 | Line 1943 | static void sigsegv_handler(int sig, sig
1943		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1944		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1945		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1946	<	r->nip, r->link, r->ctr, r->msr,
1947	<	r->xer, r->ccr,
1948	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1949	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1950	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1951	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1952	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1953	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1954	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1955	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1946	>	crash_reason,
1947	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1948	>	r->xer(), r->cr(),
1949	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1950	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1951	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1952	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1953	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1954	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1955	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1956	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1957		exit(1);
1958		QuitEmulator();
1959		return;
1960		} else {
1961		// We crashed. Save registers, tell tick thread and loop forever
1962	<	sigsegv_regs = *(sigregs *)r;
1962	>	build_sigregs(&sigsegv_regs, r);
1963		emul_thread_fatal = true;
1964		for (;;) ;
1965		}
#	Line 1606 | Line 1971 | rti:;
1971		*  SIGILL handler
1972		*/
1973
1974	<	static void sigill_handler(int sig, sigcontext_struct *sc)
1974	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp)
1975		{
1976	<	pt_regs *r = sc->regs;
1976	>	machine_regs *r = MACHINE_REGISTERS(scp);
1977		char str[256];
1978
1979	+	#ifdef SYSTEM_CLOBBERS_R2
1980	+	// Restore pointer to Thread Local Storage
1981	+	set_r2(TOC);
1982	+	#endif
1983	+	#ifdef SYSTEM_CLOBBERS_R13
1984	+	// Restore pointer to .sdata section
1985	+	set_r13(R13);
1986	+	#endif
1987	+
1988		// Fault in Mac ROM or RAM?
1989	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1989	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1990		if (mac_fault) {
1991
1992		// Get opcode and divide into fields
1993	<	uint32 opcode = *((uint32 *)r->nip);
1993	>	uint32 opcode = *((uint32 *)r->pc());
1994		uint32 primop = opcode >> 26;
1995		uint32 exop = (opcode >> 1) & 0x3ff;
1996		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1627 | Line 2001 | static void sigill_handler(int sig, sigc
2001		switch (primop) {
2002		case 9:         // POWER instructions
2003		case 22:
2004	<	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->nip, r->gpr[1], opcode);
2004	>	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode);
2005		ErrorAlert(str);
2006		QuitEmulator();
2007		return;
#	Line 1635 | Line 2009 | power_inst:            sprintf(str, GetString(STR_
2009		case 31:
2010		switch (exop) {
2011		case 83:        // mfmsr
2012	<	r->gpr[rd] = 0xf072;
2013	<	r->nip += 4;
2012	>	r->gpr(rd) = 0xf072;
2013	>	r->pc() += 4;
2014		goto rti;
2015
2016		case 210:       // mtsr
2017		case 242:       // mtsrin
2018		case 306:       // tlbie
2019	<	r->nip += 4;
2019	>	r->pc() += 4;
2020		goto rti;
2021
2022		case 339: {     // mfspr
#	Line 1658 | Line 2032 | power_inst:            sprintf(str, GetString(STR_
2032		case 957:       // PMC3
2033		case 958:       // PMC4
2034		case 959:       // SDA
2035	<	r->nip += 4;
2035	>	r->pc() += 4;
2036		goto rti;
2037		case 25:        // SDR1
2038	<	r->gpr[rd] = 0xdead001f;
2039	<	r->nip += 4;
2038	>	r->gpr(rd) = 0xdead001f;
2039	>	r->pc() += 4;
2040		goto rti;
2041		case 287:       // PVR
2042	<	r->gpr[rd] = PVR;
2043	<	r->nip += 4;
2042	>	r->gpr(rd) = PVR;
2043	>	r->pc() += 4;
2044		goto rti;
2045		}
2046		break;
#	Line 1702 | Line 2076 | power_inst:            sprintf(str, GetString(STR_
2076		case 957:       // PMC3
2077		case 958:       // PMC4
2078		case 959:       // SDA
2079	<	r->nip += 4;
2079	>	r->pc() += 4;
2080		goto rti;
2081		}
2082		break;
#	Line 1721 | Line 2095 | power_inst:            sprintf(str, GetString(STR_
2095
2096		// In GUI mode, show error alert
2097		if (!PrefsFindBool("nogui")) {
2098	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
2098	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
2099		ErrorAlert(str);
2100		QuitEmulator();
2101		return;
#	Line 1729 | Line 2103 | power_inst:            sprintf(str, GetString(STR_
2103		}
2104
2105		// For all other errors, jump into debugger (sort of...)
2106	+	crash_reason = "SIGILL";
2107		if (!ready_for_signals) {
2108	<	printf("SIGILL\n");
2109	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
2108	>	printf("%s\n");
2109	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
2110		printf(
2111		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
2112		"  xer %08lx     cr %08lx  \n"
#	Line 1743 | Line 2118 | power_inst:            sprintf(str, GetString(STR_
2118		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
2119		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
2120		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
2121	<	r->nip, r->link, r->ctr, r->msr,
2122	<	r->xer, r->ccr,
2123	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
2124	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
2125	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
2126	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
2127	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
2128	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
2129	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
2130	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
2121	>	crash_reason,
2122	>	r->pc(), r->lr(), r->ctr(), r->msr(),
2123	>	r->xer(), r->cr(),
2124	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
2125	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
2126	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
2127	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
2128	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
2129	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
2130	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
2131	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
2132		exit(1);
2133		QuitEmulator();
2134		return;
2135		} else {
2136		// We crashed. Save registers, tell tick thread and loop forever
2137	<	sigsegv_regs = *(sigregs *)r;
2137	>	build_sigregs(&sigsegv_regs, r);
2138		emul_thread_fatal = true;
2139		for (;;) ;
2140		}
#	Line 1773 | Line 2149 | rti:;
2149
2150		bool SheepMem::Init(void)
2151		{
2152	<	if (vm_acquire_fixed((char *)base, size) < 0)
2153	<	return false;
2152	>	// Size of a native page
2153	>	page_size = getpagesize();
2154
2155	<	zero_page = base + size;
2155	>	// Allocate SheepShaver globals
2156	>	proc = base;
2157	>	if (vm_mac_acquire(base, size) < 0)
2158	>	return false;
2159
2160	<	int page_size = getpagesize();
2161	<	if (vm_acquire_fixed((char *)zero_page, page_size) < 0)
2160	>	// Allocate page with all bits set to 0, right in the middle
2161	>	// This is also used to catch undesired overlaps between proc and data areas
2162	>	zero_page = proc + (size / 2);
2163	>	Mac_memset(zero_page, 0, page_size);
2164	>	if (vm_protect(Mac2HostAddr(zero_page), page_size, VM_PAGE_READ) < 0)
2165		return false;
2166	<	memset((char *)zero_page, 0, page_size);
2167	<	if (vm_protect((char *)zero_page, page_size, VM_PAGE_READ) < 0)
2166	>
2167	>	#if EMULATED_PPC
2168	>	// Allocate alternate stack for PowerPC interrupt routine
2169	>	sig_stack = base + size;
2170	>	if (vm_mac_acquire(sig_stack, SIG_STACK_SIZE) < 0)
2171		return false;
2172	+	#endif
2173
2174	<	top = base + size;
2174	>	data = base + size;
2175		return true;
2176		}
2177
2178		void SheepMem::Exit(void)
2179		{
2180	<	if (top) {
2181	<	// The zero page is next to SheepShaver globals
2182	<	vm_release((void *)base, size + getpagesize());
2180	>	if (data) {
2181	>	// Delete SheepShaver globals
2182	>	vm_mac_release(base, size);
2183	>
2184	>	#if EMULATED_PPC
2185	>	// Delete alternate stack for PowerPC interrupt routine
2186	>	vm_mac_release(sig_stack, SIG_STACK_SIZE);
2187	>	#endif
2188		}
2189		}
2190
#	Line 1847 | Line 2238 | void display_alert(int title_id, int pre
2238
2239		void ErrorAlert(const char *text)
2240		{
2241	<	#ifdef ENABLE_GTK
2241	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2242		if (PrefsFindBool("nogui") || x_display == NULL) {
2243		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
2244		return;
#	Line 1866 | Line 2257 | void ErrorAlert(const char *text)
2257
2258		void WarningAlert(const char *text)
2259		{
2260	<	#ifdef ENABLE_GTK
2260	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2261		if (PrefsFindBool("nogui") || x_display == NULL) {
2262		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
2263		return;

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