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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 1.74 by gbeauche, 2006-05-01T22:33:34Z

#	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	+	*  Note that POSIX standard says you can't modify the alternate
71	+	*  signal stack while the process is executing on it. There is a
72	+	*  hackaround though: we install a trampoline SIGUSR2 handler that
73	+	*  sets up an alternate stack itself and calls the real handler.
74	+	*  Then, when we call sigaltstack() there, we no longer get an EPERM,
75	+	*  i.e. it now works.
76	+	*
77		*  TODO:
78		*    check if SIGSEGV handler works for all registers (including FP!)
79		*/
#	Line 93 | Line 102
102		#include "xpram.h"
103		#include "timer.h"
104		#include "adb.h"
96	–	#include "sony.h"
97	–	#include "disk.h"
98	–	#include "cdrom.h"
99	–	#include "scsi.h"
105		#include "video.h"
101	–	#include "audio.h"
102	–	#include "ether.h"
103	–	#include "serial.h"
104	–	#include "clip.h"
105	–	#include "extfs.h"
106		#include "sys.h"
107		#include "macos_util.h"
108		#include "rom_patches.h"
109		#include "user_strings.h"
110		#include "vm_alloc.h"
111		#include "sigsegv.h"
112	+	#include "sigregs.h"
113	+	#include "rpc.h"
114
115		#define DEBUG 0
116		#include "debug.h"
117
118
119	+	#ifdef HAVE_DIRENT_H
120	+	#include <dirent.h>
121	+	#endif
122	+
123	+	#ifdef USE_SDL
124	+	#include <SDL.h>
125	+	#endif
126	+
127	+	#ifndef USE_SDL_VIDEO
128		#include <X11/Xlib.h>
129	+	#endif
130
131		#ifdef ENABLE_GTK
132		#include <gtk/gtk.h>
#	Line 131 | Line 143
143		#endif
144
145
146	+	// Enable emulation of unaligned lmw/stmw?
147	+	#define EMULATE_UNALIGNED_LOADSTORE_MULTIPLE 1
148	+
149		// Enable Execute68k() safety checks?
150		#define SAFE_EXEC_68K 0
151
#	Line 145 | Line 160
160		const char ROM_FILE_NAME[] = "ROM";
161		const char ROM_FILE_NAME2[] = "Mac OS ROM";
162
163	<	const uint32 RAM_BASE = 0x20000000;                     // Base address of RAM
164	<	const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
165	<
166	<
167	<	#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	<
161	<	struct sigregs {
162	<	elf_gregset_t   gp_regs;                                // Identical to pt_regs
163	<	double                  fp_regs[ELF_NFPREG];    // f0..f31 and fpsrc
164	<	//more (uninteresting) stuff following here
165	<	};
163	>	#if REAL_ADDRESSING
164	>	const uintptr RAM_BASE = 0x20000000;            // Base address of RAM
165	>	#else
166	>	// FIXME: needs to be >= 0x04000000
167	>	const uintptr RAM_BASE = 0x10000000;            // Base address of RAM
168		#endif
169	+	const uint32 SIG_STACK_SIZE = 0x10000;          // Size of signal stack
170
171
172		// Global variables (exported)
173		#if !EMULATED_PPC
174	<	void *TOC;                              // Small data pointer (r13)
174	>	void *TOC = NULL;               // Pointer to Thread Local Storage (r2)
175	>	void *R13 = NULL;               // Pointer to .sdata section (r13 under Linux)
176		#endif
177		uint32 RAMBase;                 // Base address of Mac RAM
178		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
179		uint32 KernelDataAddr;  // Address of Kernel Data
180		uint32 BootGlobsAddr;   // Address of BootGlobs structure at top of Mac RAM
181	+	uint32 DRCacheAddr;             // Address of DR Cache
182		uint32 PVR;                             // Theoretical PVR
183		int64 CPUClockSpeed;    // Processor clock speed (Hz)
184		int64 BusClockSpeed;    // Bus clock speed (Hz)
185	+	int64 TimebaseSpeed;    // Timebase clock speed (Hz)
186	+	uint8 *RAMBaseHost;             // Base address of Mac RAM (host address space)
187	+	uint8 *ROMBaseHost;             // Base address of Mac ROM (host address space)
188
189
190		// Global variables
191	+	#ifndef USE_SDL_VIDEO
192		char *x_display_name = NULL;                            // X11 display name
193		Display *x_display = NULL;                                      // X11 display handle
194	+	#ifdef X11_LOCK_TYPE
195	+	X11_LOCK_TYPE x_display_lock = X11_LOCK_INIT; // X11 display lock
196	+	#endif
197	+	#endif
198
199		static int zero_fd = 0;                                         // FD of /dev/zero
190	–	static bool sheep_area_mapped = false;          // Flag: SheepShaver data area mmap()ed
200		static bool lm_area_mapped = false;                     // Flag: Low Memory area mmap()ped
201		static int kernel_area = -1;                            // SHM ID of Kernel Data area
202		static bool rom_area_mapped = false;            // Flag: Mac ROM mmap()ped
203		static bool ram_area_mapped = false;            // Flag: Mac RAM mmap()ped
204	+	static bool dr_cache_area_mapped = false;       // Flag: Mac DR Cache mmap()ped
205	+	static bool dr_emulator_area_mapped = false;// Flag: Mac DR Emulator mmap()ped
206		static KernelData *kernel_data;                         // Pointer to Kernel Data
207		static EmulatorData *emulator_data;
208
209		static uint8 last_xpram[XPRAM_SIZE];            // Buffer for monitoring XPRAM changes
210
211		static bool nvram_thread_active = false;        // Flag: NVRAM watchdog installed
212	+	static volatile bool nvram_thread_cancel;       // Flag: Cancel NVRAM thread
213		static pthread_t nvram_thread;                          // NVRAM watchdog
214		static bool tick_thread_active = false;         // Flag: MacOS thread installed
215	+	static volatile bool tick_thread_cancel;        // Flag: Cancel 60Hz thread
216		static pthread_t tick_thread;                           // 60Hz thread
217		static pthread_t emul_thread;                           // MacOS thread
218
#	Line 207 | Line 220 | static bool ready_for_signals = false;
220		static int64 num_segv = 0;                                      // Number of handled SEGV signals
221
222		static struct sigaction sigusr2_action;         // Interrupt signal (of emulator thread)
223	<	#if !EMULATED_PPC
223	>	#if EMULATED_PPC
224	>	static uintptr sig_stack = 0;                           // Stack for PowerPC interrupt routine
225	>	#else
226		static struct sigaction sigsegv_action;         // Data access exception signal (of emulator thread)
227		static struct sigaction sigill_action;          // Illegal instruction signal (of emulator thread)
228	<	static void *sig_stack = NULL;                          // Stack for signal handlers
229	<	static void *extra_stack = NULL;                        // Stack for SIGSEGV inside interrupt handler
228	>	static struct sigaltstack sig_stack;            // Stack for signal handlers
229	>	static struct sigaltstack extra_stack;          // Stack for SIGSEGV inside interrupt handler
230		static bool emul_thread_fatal = false;          // Flag: MacOS thread crashed, tick thread shall dump debug output
231		static sigregs sigsegv_regs;                            // Register dump when crashed
232	+	static const char *crash_reason = NULL;         // Reason of the crash (SIGSEGV, SIGBUS, SIGILL)
233		#endif
234
235	+	static rpc_connection_t *gui_connection = NULL; // RPC connection to the GUI
236	+	static const char *gui_connection_path = NULL;  // GUI connection identifier
237	+
238	+	uint32  SheepMem::page_size;                            // Size of a native page
239	+	uintptr SheepMem::zero_page = 0;                        // Address of ro page filled in with zeros
240	+	uintptr SheepMem::base = 0x60000000;            // Address of SheepShaver data
241	+	uintptr SheepMem::proc;                                         // Bottom address of SheepShave procedures
242	+	uintptr SheepMem::data;                                         // Top of SheepShaver data (stack like storage)
243	+
244
245		// Prototypes
246	+	static bool kernel_data_init(void);
247	+	static void kernel_data_exit(void);
248		static void Quit(void);
249		static void *emul_func(void *arg);
250		static void *nvram_func(void *arg);
251		static void *tick_func(void *arg);
252		#if EMULATED_PPC
226	–	static void sigusr2_handler(int sig);
253		extern void emul_ppc(uint32 start);
254		extern void init_emul_ppc(void);
255		extern void exit_emul_ppc(void);
256	+	sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
257		#else
258	<	static void sigusr2_handler(int sig, sigcontext_struct *sc);
259	<	static void sigsegv_handler(int sig, sigcontext_struct *sc);
260	<	static void sigill_handler(int sig, sigcontext_struct *sc);
258	>	extern "C" void sigusr2_handler_init(int sig, siginfo_t *sip, void *scp);
259	>	extern "C" void sigusr2_handler(int sig, siginfo_t *sip, void *scp);
260	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp);
261	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp);
262		#endif
263
264
265		// From asm_linux.S
266		#if !EMULATED_PPC
239	–	extern "C" void *get_toc(void);
267		extern "C" void *get_sp(void);
268	<	extern "C" void flush_icache_range(void *start, void *end);
268	>	extern "C" void *get_r2(void);
269	>	extern "C" void set_r2(void *);
270	>	extern "C" void *get_r13(void);
271	>	extern "C" void set_r13(void *);
272	>	extern "C" void flush_icache_range(uint32 start, uint32 end);
273		extern "C" void jump_to_rom(uint32 entry, uint32 context);
274		extern "C" void quit_emulator(void);
275		extern "C" void execute_68k(uint32 pc, M68kRegisters *r);
#	Line 252 | Line 283 | extern void paranoia_check(void);
283
284		#if EMULATED_PPC
285		/*
286	+	*  Return signal stack base
287	+	*/
288	+
289	+	uintptr SignalStackBase(void)
290	+	{
291	+	return sig_stack + SIG_STACK_SIZE;
292	+	}
293	+
294	+
295	+	/*
296		*  Atomic operations
297		*/
298
#	Line 292 | Line 333 | int atomic_or(int *var, int v)
333
334
335		/*
336	+	*  Memory management helpers
337	+	*/
338	+
339	+	static inline int vm_mac_acquire(uint32 addr, uint32 size)
340	+	{
341	+	return vm_acquire_fixed(Mac2HostAddr(addr), size);
342	+	}
343	+
344	+	static inline int vm_mac_release(uint32 addr, uint32 size)
345	+	{
346	+	return vm_release(Mac2HostAddr(addr), size);
347	+	}
348	+
349	+
350	+	/*
351		*  Main program
352		*/
353
#	Line 307 | Line 363 | static void usage(const char *prg_name)
363		int main(int argc, char **argv)
364		{
365		char str[256];
310	–	uint32 *boot_globs;
311	–	int16 i16;
366		int rom_fd;
367		FILE *proc_file;
368		const char *rom_path;
#	Line 325 | Line 379 | int main(int argc, char **argv)
379		printf(" %s\n", GetString(STR_ABOUT_TEXT2));
380
381		#if !EMULATED_PPC
382	+	#ifdef SYSTEM_CLOBBERS_R2
383		// Get TOC pointer
384	<	TOC = get_toc();
384	>	TOC = get_r2();
385	>	#endif
386	>	#ifdef SYSTEM_CLOBBERS_R13
387	>	// Get r13 register
388	>	R13 = get_r13();
389		#endif
331	–
332	–	#ifdef ENABLE_GTK
333	–	// Init GTK
334	–	gtk_set_locale();
335	–	gtk_init(&argc, &argv);
390		#endif
337	–
338	–	// Read preferences
339	–	PrefsInit(argc, argv);
391
392		// Parse command line arguments
393		for (int i=1; i<argc; i++) {
394		if (strcmp(argv[i], "--help") == 0) {
395		usage(argv[0]);
396	+	#ifndef USE_SDL_VIDEO
397		} else if (strcmp(argv[i], "--display") == 0) {
398		i++;
399		if (i < argc)
400		x_display_name = strdup(argv[i]);
401	<	} else if (argv[i][0] == '-') {
401	>	#endif
402	>	} else if (strcmp(argv[i], "--gui-connection") == 0) {
403	>	argv[i++] = NULL;
404	>	if (i < argc) {
405	>	gui_connection_path = argv[i];
406	>	argv[i] = NULL;
407	>	}
408	>	}
409	>	}
410	>
411	>	// Remove processed arguments
412	>	for (int i=1; i<argc; i++) {
413	>	int k;
414	>	for (k=i; k<argc; k++)
415	>	if (argv[k] != NULL)
416	>	break;
417	>	if (k > i) {
418	>	k -= i;
419	>	for (int j=i+k; j<argc; j++)
420	>	argv[j-k] = argv[j];
421	>	argc -= k;
422	>	}
423	>	}
424	>
425	>	// Connect to the external GUI
426	>	if (gui_connection_path) {
427	>	if ((gui_connection = rpc_init_client(gui_connection_path)) == NULL) {
428	>	fprintf(stderr, "Failed to initialize RPC client connection to the GUI\n");
429	>	return 1;
430	>	}
431	>	}
432	>
433	>	#ifdef ENABLE_GTK
434	>	if (!gui_connection) {
435	>	// Init GTK
436	>	gtk_set_locale();
437	>	gtk_init(&argc, &argv);
438	>	}
439	>	#endif
440	>
441	>	// Read preferences
442	>	PrefsInit(argc, argv);
443	>
444	>	// Any command line arguments left?
445	>	for (int i=1; i<argc; i++) {
446	>	if (argv[i][0] == '-') {
447		fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
448		usage(argv[0]);
449		}
450		}
451
452	+	#ifdef USE_SDL
453	+	// Initialize SDL system
454	+	int sdl_flags = 0;
455	+	#ifdef USE_SDL_VIDEO
456	+	sdl_flags |= SDL_INIT_VIDEO;
457	+	#endif
458	+	#ifdef USE_SDL_AUDIO
459	+	sdl_flags |= SDL_INIT_AUDIO;
460	+	#endif
461	+	assert(sdl_flags != 0);
462	+	if (SDL_Init(sdl_flags) == -1) {
463	+	char str[256];
464	+	sprintf(str, "Could not initialize SDL: %s.\n", SDL_GetError());
465	+	ErrorAlert(str);
466	+	goto quit;
467	+	}
468	+	atexit(SDL_Quit);
469	+	#endif
470	+
471	+	#ifndef USE_SDL_VIDEO
472		// Open display
473		x_display = XOpenDisplay(x_display_name);
474		if (x_display == NULL) {
#	Line 365 | Line 482 | int main(int argc, char **argv)
482		// Fork out, so we can return from fullscreen mode when things get ugly
483		XF86DGAForkApp(DefaultScreen(x_display));
484		#endif
485	+	#endif
486
487		#ifdef ENABLE_MON
488		// Initialize mon
489		mon_init();
490		#endif
491
492	+	#if !EMULATED_PPC
493	+	// Create and install stacks for signal handlers
494	+	sig_stack.ss_sp = malloc(SIG_STACK_SIZE);
495	+	D(bug("Signal stack at %p\n", sig_stack.ss_sp));
496	+	if (sig_stack.ss_sp == NULL) {
497	+	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
498	+	goto quit;
499	+	}
500	+	sig_stack.ss_flags = 0;
501	+	sig_stack.ss_size = SIG_STACK_SIZE;
502	+	if (sigaltstack(&sig_stack, NULL) < 0) {
503	+	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
504	+	ErrorAlert(str);
505	+	goto quit;
506	+	}
507	+	extra_stack.ss_sp = malloc(SIG_STACK_SIZE);
508	+	D(bug("Extra stack at %p\n", extra_stack.ss_sp));
509	+	if (extra_stack.ss_sp == NULL) {
510	+	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
511	+	goto quit;
512	+	}
513	+	extra_stack.ss_flags = 0;
514	+	extra_stack.ss_size = SIG_STACK_SIZE;
515	+	#endif
516	+
517	+	#if !EMULATED_PPC
518	+	// Install SIGSEGV and SIGBUS handlers
519	+	sigemptyset(&sigsegv_action.sa_mask);   // Block interrupts during SEGV handling
520	+	sigaddset(&sigsegv_action.sa_mask, SIGUSR2);
521	+	sigsegv_action.sa_sigaction = sigsegv_handler;
522	+	sigsegv_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
523	+	#ifdef HAVE_SIGNAL_SA_RESTORER
524	+	sigsegv_action.sa_restorer = NULL;
525	+	#endif
526	+	if (sigaction(SIGSEGV, &sigsegv_action, NULL) < 0) {
527	+	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
528	+	ErrorAlert(str);
529	+	goto quit;
530	+	}
531	+	if (sigaction(SIGBUS, &sigsegv_action, NULL) < 0) {
532	+	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGBUS", strerror(errno));
533	+	ErrorAlert(str);
534	+	goto quit;
535	+	}
536	+	#else
537	+	// Install SIGSEGV handler for CPU emulator
538	+	if (!sigsegv_install_handler(sigsegv_handler)) {
539	+	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGSEGV", strerror(errno));
540	+	ErrorAlert(str);
541	+	goto quit;
542	+	}
543	+	#endif
544	+
545	+	// Initialize VM system
546	+	vm_init();
547	+
548		// Get system info
549		PVR = 0x00040000;                       // Default: 604
550		CPUClockSpeed = 100000000;      // Default: 100MHz
551		BusClockSpeed = 100000000;      // Default: 100MHz
552	<	#if !EMULATED_PPC
552	>	TimebaseSpeed =  25000000;      // Default:  25MHz
553	>	#if EMULATED_PPC
554	>	PVR = 0x000c0000;                       // Default: 7400 (with AltiVec)
555	>	#elif defined(__APPLE__) && defined(__MACH__)
556	>	proc_file = popen("ioreg -c IOPlatformDevice", "r");
557	>	if (proc_file) {
558	>	char line[256];
559	>	bool powerpc_node = false;
560	>	while (fgets(line, sizeof(line) - 1, proc_file)) {
561	>	// Read line
562	>	int len = strlen(line);
563	>	if (len == 0)
564	>	continue;
565	>	line[len - 1] = 0;
566	>
567	>	// Parse line
568	>	if (strstr(line, "o PowerPC,"))
569	>	powerpc_node = true;
570	>	else if (powerpc_node) {
571	>	uint32 value;
572	>	char head[256];
573	>	if (sscanf(line, "%[ |]\"cpu-version\" = <%x>", head, &value) == 2)
574	>	PVR = value;
575	>	else if (sscanf(line, "%[ |]\"clock-frequency\" = <%x>", head, &value) == 2)
576	>	CPUClockSpeed = value;
577	>	else if (sscanf(line, "%[ |]\"bus-frequency\" = <%x>", head, &value) == 2)
578	>	BusClockSpeed = value;
579	>	else if (sscanf(line, "%[ |]\"timebase-frequency\" = <%x>", head, &value) == 2)
580	>	TimebaseSpeed = value;
581	>	else if (strchr(line, '}'))
582	>	powerpc_node = false;
583	>	}
584	>	}
585	>	fclose(proc_file);
586	>	} else {
587	>	sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
588	>	WarningAlert(str);
589	>	}
590	>	#else
591		proc_file = fopen("/proc/cpuinfo", "r");
592		if (proc_file) {
593	+	// CPU specs from Linux kernel
594	+	// TODO: make it more generic with features (e.g. AltiVec) and
595	+	// cache information and friends for NameRegistry
596	+	static const struct {
597	+	uint32 pvr_mask;
598	+	uint32 pvr_value;
599	+	const char *cpu_name;
600	+	}
601	+	cpu_specs[] = {
602	+	{ 0xffff0000, 0x00010000, "601" },
603	+	{ 0xffff0000, 0x00030000, "603" },
604	+	{ 0xffff0000, 0x00060000, "603e" },
605	+	{ 0xffff0000, 0x00070000, "603ev" },
606	+	{ 0xffff0000, 0x00040000, "604" },
607	+	{ 0xfffff000, 0x00090000, "604e" },
608	+	{ 0xffff0000, 0x00090000, "604r" },
609	+	{ 0xffff0000, 0x000a0000, "604ev" },
610	+	{ 0xffffffff, 0x00084202, "740/750" },
611	+	{ 0xfffff000, 0x00083000, "745/755" },
612	+	{ 0xfffffff0, 0x00080100, "750CX" },
613	+	{ 0xfffffff0, 0x00082200, "750CX" },
614	+	{ 0xfffffff0, 0x00082210, "750CXe" },
615	+	{ 0xffffff00, 0x70000100, "750FX" },
616	+	{ 0xffffffff, 0x70000200, "750FX" },
617	+	{ 0xffff0000, 0x70000000, "750FX" },
618	+	{ 0xffff0000, 0x70020000, "750GX" },
619	+	{ 0xffff0000, 0x00080000, "740/750" },
620	+	{ 0xffffffff, 0x000c1101, "7400 (1.1)" },
621	+	{ 0xffff0000, 0x000c0000, "7400" },
622	+	{ 0xffff0000, 0x800c0000, "7410" },
623	+	{ 0xffffffff, 0x80000200, "7450" },
624	+	{ 0xffffffff, 0x80000201, "7450" },
625	+	{ 0xffff0000, 0x80000000, "7450" },
626	+	{ 0xffffff00, 0x80010100, "7455" },
627	+	{ 0xffffffff, 0x80010200, "7455" },
628	+	{ 0xffff0000, 0x80010000, "7455" },
629	+	{ 0xffff0000, 0x80020000, "7457" },
630	+	{ 0xffff0000, 0x80030000, "7447A" },
631	+	{ 0xffff0000, 0x80040000, "7448" },
632	+	{ 0x7fff0000, 0x00810000, "82xx" },
633	+	{ 0x7fff0000, 0x00820000, "8280" },
634	+	{ 0xffff0000, 0x00400000, "Power3 (630)" },
635	+	{ 0xffff0000, 0x00410000, "Power3 (630+)" },
636	+	{ 0xffff0000, 0x00360000, "I-star" },
637	+	{ 0xffff0000, 0x00370000, "S-star" },
638	+	{ 0xffff0000, 0x00350000, "Power4" },
639	+	{ 0xffff0000, 0x00390000, "PPC970" },
640	+	{ 0xffff0000, 0x003c0000, "PPC970FX" },
641	+	{ 0xffff0000, 0x003a0000, "POWER5 (gr)" },
642	+	{ 0xffff0000, 0x003b0000, "POWER5 (gs)" },
643	+	{ 0, 0, 0 }
644	+	};
645	+
646		char line[256];
647		while(fgets(line, 255, proc_file)) {
648		// Read line
#	Line 389 | Line 654 | int main(int argc, char **argv)
654		// Parse line
655		int i;
656		char value[256];
657	<	if (sscanf(line, "cpu : %s", value) == 1) {
658	<	if (strcmp(value, "601") == 0)
659	<	PVR = 0x00010000;
660	<	else if (strcmp(value, "603") == 0)
661	<	PVR = 0x00030000;
662	<	else if (strcmp(value, "604") == 0)
663	<	PVR = 0x00040000;
664	<	else if (strcmp(value, "603e") == 0)
665	<	PVR = 0x00060000;
666	<	else if (strcmp(value, "603ev") == 0)
667	<	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
657	>	if (sscanf(line, "cpu : %[0-9A-Za-a]", value) == 1) {
658	>	// Search by name
659	>	const char *cpu_name = NULL;
660	>	for (int i = 0; cpu_specs[i].pvr_mask != 0; i++) {
661	>	if (strcmp(cpu_specs[i].cpu_name, value) == 0) {
662	>	cpu_name = cpu_specs[i].cpu_name;
663	>	PVR = cpu_specs[i].pvr_value;
664	>	break;
665	>	}
666	>	}
667	>	if (cpu_name == NULL)
668		printf("WARNING: Unknown CPU type '%s', assuming 604\n", value);
669	+	else
670	+	printf("Found a PowerPC %s processor\n", cpu_name);
671		}
672		if (sscanf(line, "clock : %dMHz", &i) == 1)
673		CPUClockSpeed = BusClockSpeed = i * 1000000;
#	Line 421 | Line 677 | int main(int argc, char **argv)
677		sprintf(str, GetString(STR_PROC_CPUINFO_WARN), strerror(errno));
678		WarningAlert(str);
679		}
680	+
681	+	// Get actual bus frequency
682	+	proc_file = fopen("/proc/device-tree/clock-frequency", "r");
683	+	if (proc_file) {
684	+	union { uint8 b[4]; uint32 l; } value;
685	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
686	+	BusClockSpeed = value.l;
687	+	fclose(proc_file);
688	+	}
689	+
690	+	// Get actual timebase frequency
691	+	TimebaseSpeed = BusClockSpeed / 4;
692	+	DIR *cpus_dir;
693	+	if ((cpus_dir = opendir("/proc/device-tree/cpus")) != NULL) {
694	+	struct dirent *cpu_entry;
695	+	while ((cpu_entry = readdir(cpus_dir)) != NULL) {
696	+	if (strstr(cpu_entry->d_name, "PowerPC,") == cpu_entry->d_name) {
697	+	char timebase_freq_node[256];
698	+	sprintf(timebase_freq_node, "/proc/device-tree/cpus/%s/timebase-frequency", cpu_entry->d_name);
699	+	proc_file = fopen(timebase_freq_node, "r");
700	+	if (proc_file) {
701	+	union { uint8 b[4]; uint32 l; } value;
702	+	if (fread(value.b, sizeof(value), 1, proc_file) == 1)
703	+	TimebaseSpeed = value.l;
704	+	fclose(proc_file);
705	+	}
706	+	}
707	+	}
708	+	closedir(cpus_dir);
709	+	}
710		#endif
711	+	// Remap any newer G4/G5 processor to plain G4 for compatibility
712	+	switch (PVR >> 16) {
713	+	case 0x8000:                            // 7450
714	+	case 0x8001:                            // 7455
715	+	case 0x8002:                            // 7457
716	+	case 0x8003:                            // 7447A
717	+	case 0x8004:                            // 7448
718	+	case 0x0039:                            //  970
719	+	case 0x003c:                            //  970FX
720	+	PVR = 0x000c0000;               // 7400
721	+	break;
722	+	}
723		D(bug("PVR: %08x (assumed)\n", PVR));
724
725		// Init system routines
#	Line 445 | Line 743 | int main(int argc, char **argv)
743		goto quit;
744		}
745
746	+	#ifndef PAGEZERO_HACK
747		// Create Low Memory area (0x0000..0x3000)
748	<	if (vm_acquire_fixed((char *)0, 0x3000) < 0) {
748	>	if (vm_mac_acquire(0, 0x3000) < 0) {
749		sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
750		ErrorAlert(str);
751		goto quit;
752		}
753		lm_area_mapped = true;
754	+	#endif
755
756		// Create areas for Kernel Data
757	<	kernel_area = shmget(IPC_PRIVATE, KERNEL_AREA_SIZE, 0600);
758	<	if (kernel_area == -1) {
759	<	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
757	>	if (!kernel_data_init())
758	>	goto quit;
759	>	kernel_data = (KernelData *)Mac2HostAddr(KERNEL_DATA_BASE);
760	>	emulator_data = &kernel_data->ed;
761	>	KernelDataAddr = KERNEL_DATA_BASE;
762	>	D(bug("Kernel Data at %p (%08x)\n", kernel_data, KERNEL_DATA_BASE));
763	>	D(bug("Emulator Data at %p (%08x)\n", emulator_data, KERNEL_DATA_BASE + offsetof(KernelData, ed)));
764	>
765	>	// Create area for DR Cache
766	>	if (vm_mac_acquire(DR_EMULATOR_BASE, DR_EMULATOR_SIZE) < 0) {
767	>	sprintf(str, GetString(STR_DR_EMULATOR_MMAP_ERR), strerror(errno));
768		ErrorAlert(str);
769		goto quit;
770		}
771	<	if (shmat(kernel_area, (void *)KERNEL_DATA_BASE, 0) < 0) {
772	<	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
771	>	dr_emulator_area_mapped = true;
772	>	if (vm_mac_acquire(DR_CACHE_BASE, DR_CACHE_SIZE) < 0) {
773	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
774		ErrorAlert(str);
775		goto quit;
776		}
777	<	if (shmat(kernel_area, (void *)KERNEL_DATA2_BASE, 0) < 0) {
778	<	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
777	>	dr_cache_area_mapped = true;
778	>	#if !EMULATED_PPC
779	>	if (vm_protect((char *)DR_CACHE_BASE, DR_CACHE_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
780	>	sprintf(str, GetString(STR_DR_CACHE_MMAP_ERR), strerror(errno));
781		ErrorAlert(str);
782		goto quit;
783		}
784	<	kernel_data = (KernelData *)0x68ffe000;
785	<	emulator_data = &kernel_data->ed;
786	<	KernelDataAddr = (uint32)kernel_data;
476	<	D(bug("Kernel Data at %p, Emulator Data at %p\n", kernel_data, emulator_data));
784	>	#endif
785	>	DRCacheAddr = DR_CACHE_BASE;
786	>	D(bug("DR Cache at %p\n", DRCacheAddr));
787
788		// Create area for SheepShaver data
789	<	if (vm_acquire_fixed((char *)SHEEP_BASE, SHEEP_SIZE) < 0) {
789	>	if (!SheepMem::Init()) {
790		sprintf(str, GetString(STR_SHEEP_MEM_MMAP_ERR), strerror(errno));
791		ErrorAlert(str);
792		goto quit;
793		}
484	–	SheepStack1Base = SHEEP_BASE + 0x10000;
485	–	SheepStack2Base = SheepStack1Base + 0x10000;
486	–	SheepThunksBase = SheepStack2Base + 0x1000;
487	–	sheep_area_mapped = true;
794
795		// Create area for Mac ROM
796	<	if (vm_acquire_fixed((char *)ROM_BASE, ROM_AREA_SIZE) < 0) {
796	>	if (vm_mac_acquire(ROM_BASE, ROM_AREA_SIZE) < 0) {
797		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
798		ErrorAlert(str);
799		goto quit;
800		}
801	<	#if !EMULATED_PPC || defined(__powerpc__)
802	<	if (vm_protect((char *)ROM_BASE, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
801	>	ROMBaseHost = Mac2HostAddr(ROM_BASE);
802	>	#if !EMULATED_PPC
803	>	if (vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
804		sprintf(str, GetString(STR_ROM_MMAP_ERR), strerror(errno));
805		ErrorAlert(str);
806		goto quit;
807		}
808		#endif
809		rom_area_mapped = true;
810	<	D(bug("ROM area at %08x\n", ROM_BASE));
810	>	D(bug("ROM area at %p (%08x)\n", ROMBaseHost, ROM_BASE));
811
812		// Create area for Mac RAM
813		RAMSize = PrefsFindInt32("ramsize");
#	Line 509 | Line 816 | int main(int argc, char **argv)
816		RAMSize = 8*1024*1024;
817		}
818
819	<	if (vm_acquire_fixed((char *)RAM_BASE, RAMSize) < 0) {
819	>	if (vm_mac_acquire(RAM_BASE, RAMSize) < 0) {
820		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
821		ErrorAlert(str);
822		goto quit;
823		}
824	+	RAMBaseHost = Mac2HostAddr(RAM_BASE);
825		#if !EMULATED_PPC
826	<	if (vm_protect((char *)RAM_BASE, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
826	>	if (vm_protect(RAMBaseHost, RAMSize, VM_PAGE_READ | VM_PAGE_WRITE | VM_PAGE_EXECUTE) < 0) {
827		sprintf(str, GetString(STR_RAM_MMAP_ERR), strerror(errno));
828		ErrorAlert(str);
829		goto quit;
#	Line 523 | Line 831 | int main(int argc, char **argv)
831		#endif
832		RAMBase = RAM_BASE;
833		ram_area_mapped = true;
834	<	D(bug("RAM area at %08x\n", RAMBase));
834	>	D(bug("RAM area at %p (%08x)\n", RAMBaseHost, RAMBase));
835
836		if (RAMBase > ROM_BASE) {
837		ErrorAlert(GetString(STR_RAM_HIGHER_THAN_ROM_ERR));
#	Line 559 | Line 867 | int main(int argc, char **argv)
867		}
868		delete[] rom_tmp;
869
870	<	// Load NVRAM
871	<	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));
870	>	// Initialize everything
871	>	if (!InitAll())
872		goto quit;
873	<	}
873	>	D(bug("Initialization complete\n"));
874
875		// Clear caches (as we loaded and patched code) and write protect ROM
876		#if !EMULATED_PPC
877	<	MakeExecutable(0, (void *)ROM_BASE, ROM_AREA_SIZE);
619	<	#endif
620	<	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);
877	>	flush_icache_range(ROM_BASE, ROM_BASE + ROM_AREA_SIZE);
878		#endif
879	<	D(bug("Low Memory initialized\n"));
879	>	vm_protect(ROMBaseHost, ROM_AREA_SIZE, VM_PAGE_READ | VM_PAGE_EXECUTE);
880
881		// Start 60Hz thread
882	+	tick_thread_cancel = false;
883		tick_thread_active = (pthread_create(&tick_thread, NULL, tick_func, NULL) == 0);
884		D(bug("Tick thread installed (%ld)\n", tick_thread));
885
886		// Start NVRAM watchdog thread
887		memcpy(last_xpram, XPRAM, XPRAM_SIZE);
888	+	nvram_thread_cancel = false;
889		nvram_thread_active = (pthread_create(&nvram_thread, NULL, nvram_func, NULL) == 0);
890		D(bug("NVRAM thread installed (%ld)\n", nvram_thread));
891
892		#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	–
893		// Install SIGILL handler
894		sigemptyset(&sigill_action.sa_mask);    // Block interrupts during ILL handling
895		sigaddset(&sigill_action.sa_mask, SIGUSR2);
896	<	sigill_action.sa_handler = (__sighandler_t)sigill_handler;
897	<	sigill_action.sa_flags = SA_ONSTACK;
896	>	sigill_action.sa_sigaction = sigill_handler;
897	>	sigill_action.sa_flags = SA_ONSTACK | SA_SIGINFO;
898	>	#ifdef HAVE_SIGNAL_SA_RESTORER
899		sigill_action.sa_restorer = NULL;
900	+	#endif
901		if (sigaction(SIGILL, &sigill_action, NULL) < 0) {
902	<	sprintf(str, GetString(STR_SIGILL_INSTALL_ERR), strerror(errno));
902	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno));
903		ErrorAlert(str);
904		goto quit;
905		}
906		#endif
907
908	+	#if !EMULATED_PPC
909		// Install interrupt signal handler
910		sigemptyset(&sigusr2_action.sa_mask);
911	<	sigusr2_action.sa_handler = (__sighandler_t)sigusr2_handler;
912	<	sigusr2_action.sa_flags = 0;
913	<	#if !EMULATED_PPC
759	<	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART;
760	<	#endif
911	>	sigusr2_action.sa_sigaction = sigusr2_handler_init;
912	>	sigusr2_action.sa_flags = SA_ONSTACK | SA_RESTART | SA_SIGINFO;
913	>	#ifdef HAVE_SIGNAL_SA_RESTORER
914		sigusr2_action.sa_restorer = NULL;
915	+	#endif
916		if (sigaction(SIGUSR2, &sigusr2_action, NULL) < 0) {
917	<	sprintf(str, GetString(STR_SIGUSR2_INSTALL_ERR), strerror(errno));
917	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGUSR2", strerror(errno));
918		ErrorAlert(str);
919		goto quit;
920		}
921	+	#endif
922
923		// Get my thread ID and execute MacOS thread function
924		emul_thread = pthread_self();
#	Line 789 | Line 944 | static void Quit(void)
944
945		// Stop 60Hz thread
946		if (tick_thread_active) {
947	+	tick_thread_cancel = true;
948		pthread_cancel(tick_thread);
949		pthread_join(tick_thread, NULL);
950		}
951
952		// Stop NVRAM watchdog thread
953		if (nvram_thread_active) {
954	+	nvram_thread_cancel = true;
955		pthread_cancel(nvram_thread);
956		pthread_join(nvram_thread, NULL);
957		}
958
959		#if !EMULATED_PPC
960	<	// Uninstall SIGSEGV handler
960	>	// Uninstall SIGSEGV and SIGBUS handlers
961		sigemptyset(&sigsegv_action.sa_mask);
962		sigsegv_action.sa_handler = SIG_DFL;
963		sigsegv_action.sa_flags = 0;
964		sigaction(SIGSEGV, &sigsegv_action, NULL);
965	+	sigaction(SIGBUS, &sigsegv_action, NULL);
966
967		// Uninstall SIGILL handler
968		sigemptyset(&sigill_action.sa_mask);
969		sigill_action.sa_handler = SIG_DFL;
970		sigill_action.sa_flags = 0;
971		sigaction(SIGILL, &sigill_action, NULL);
814	–	#endif
815	–
816	–	// Save NVRAM
817	–	XPRAMExit();
818	–
819	–	// Exit clipboard
820	–	ClipExit();
821	–
822	–	// Exit Time Manager
823	–	TimerExit();
824	–
825	–	// Exit serial
826	–	SerialExit();
827	–
828	–	// Exit network
829	–	EtherExit();
830	–
831	–	// Exit audio
832	–	AudioExit();
972
973	<	// Exit video
974	<	VideoExit();
973	>	// Delete stacks for signal handlers
974	>	if (sig_stack.ss_sp)
975	>	free(sig_stack.ss_sp);
976	>	if (extra_stack.ss_sp)
977	>	free(extra_stack.ss_sp);
978	>	#endif
979
980	<	// Exit external file system
981	<	ExtFSExit();
980	>	// Deinitialize everything
981	>	ExitAll();
982
983	<	// Exit drivers
984	<	SCSIExit();
842	<	CDROMExit();
843	<	DiskExit();
844	<	SonyExit();
983	>	// Delete SheepShaver globals
984	>	SheepMem::Exit();
985
986		// Delete RAM area
987		if (ram_area_mapped)
988	<	vm_release((char *)RAM_BASE, RAMSize);
988	>	vm_mac_release(RAM_BASE, RAMSize);
989
990		// Delete ROM area
991		if (rom_area_mapped)
992	<	vm_release((char *)ROM_BASE, ROM_AREA_SIZE);
992	>	vm_mac_release(ROM_BASE, ROM_AREA_SIZE);
993	>
994	>	// Delete DR cache areas
995	>	if (dr_emulator_area_mapped)
996	>	vm_mac_release(DR_EMULATOR_BASE, DR_EMULATOR_SIZE);
997	>	if (dr_cache_area_mapped)
998	>	vm_mac_release(DR_CACHE_BASE, DR_CACHE_SIZE);
999
1000		// Delete Kernel Data area
1001	<	if (kernel_area >= 0) {
856	<	shmdt((void *)KERNEL_DATA_BASE);
857	<	shmdt((void *)KERNEL_DATA2_BASE);
858	<	shmctl(kernel_area, IPC_RMID, NULL);
859	<	}
1001	>	kernel_data_exit();
1002
1003		// Delete Low Memory area
1004		if (lm_area_mapped)
1005	<	munmap((char *)0x0000, 0x3000);
1005	>	vm_mac_release(0, 0x3000);
1006
1007		// Close /dev/zero
1008		if (zero_fd > 0)
#	Line 878 | Line 1020 | static void Quit(void)
1020		#endif
1021
1022		// Close X11 server connection
1023	+	#ifndef USE_SDL_VIDEO
1024		if (x_display)
1025		XCloseDisplay(x_display);
1026	+	#endif
1027	+
1028	+	// Notify GUI we are about to leave
1029	+	if (gui_connection) {
1030	+	if (rpc_method_invoke(gui_connection, RPC_METHOD_EXIT, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
1031	+	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID);
1032	+	}
1033
1034		exit(0);
1035		}
1036
1037
1038		/*
1039	+	*  Initialize Kernel Data segments
1040	+	*/
1041	+
1042	+	static bool kernel_data_init(void)
1043	+	{
1044	+	char str[256];
1045	+	uint32 kernel_area_size = (KERNEL_AREA_SIZE + SHMLBA - 1) & -SHMLBA;
1046	+
1047	+	kernel_area = shmget(IPC_PRIVATE, kernel_area_size, 0600);
1048	+	if (kernel_area == -1) {
1049	+	sprintf(str, GetString(STR_KD_SHMGET_ERR), strerror(errno));
1050	+	ErrorAlert(str);
1051	+	return false;
1052	+	}
1053	+	void *kernel_addr = Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA);
1054	+	if (shmat(kernel_area, kernel_addr, 0) != kernel_addr) {
1055	+	sprintf(str, GetString(STR_KD_SHMAT_ERR), strerror(errno));
1056	+	ErrorAlert(str);
1057	+	return false;
1058	+	}
1059	+	kernel_addr = Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA);
1060	+	if (shmat(kernel_area, kernel_addr, 0) != kernel_addr) {
1061	+	sprintf(str, GetString(STR_KD2_SHMAT_ERR), strerror(errno));
1062	+	ErrorAlert(str);
1063	+	return false;
1064	+	}
1065	+	return true;
1066	+	}
1067	+
1068	+
1069	+	/*
1070	+	*  Deallocate Kernel Data segments
1071	+	*/
1072	+
1073	+	static void kernel_data_exit(void)
1074	+	{
1075	+	if (kernel_area >= 0) {
1076	+	shmdt(Mac2HostAddr(KERNEL_DATA_BASE & -SHMLBA));
1077	+	shmdt(Mac2HostAddr(KERNEL_DATA2_BASE & -SHMLBA));
1078	+	shmctl(kernel_area, IPC_RMID, NULL);
1079	+	}
1080	+	}
1081	+
1082	+
1083	+	/*
1084		*  Jump into Mac ROM, start 680x0 emulator
1085		*/
1086
#	Line 954 | Line 1149 | void Execute68kTrap(uint16 trap, M68kReg
1149		uint16 proc[2] = {trap, M68K_RTS};
1150		Execute68k((uint32)proc, r);
1151		}
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	–	}
1152		#endif
1153
1154
#	Line 985 | Line 1167 | void QuitEmulator(void)
1167
1168
1169		/*
988	–	*  Pause/resume emulator
989	–	*/
990	–
991	–	void PauseEmulator(void)
992	–	{
993	–	pthread_kill(emul_thread, SIGSTOP);
994	–	}
995	–
996	–	void ResumeEmulator(void)
997	–	{
998	–	pthread_kill(emul_thread, SIGCONT);
999	–	}
1000	–
1001	–
1002	–	/*
1170		*  Dump 68k registers
1171		*/
1172
#	Line 1027 | Line 1194 | void Dump68kRegs(M68kRegisters *r)
1194		*  Make code executable
1195		*/
1196
1197	<	void MakeExecutable(int dummy, void *start, uint32 length)
1197	>	void MakeExecutable(int dummy, uint32 start, uint32 length)
1198		{
1199	<	if (((uintptr)start >= ROM_BASE) && ((uintptr)start < (ROM_BASE + ROM_SIZE)))
1199	>	if ((start >= ROM_BASE) && (start < (ROM_BASE + ROM_SIZE)))
1200		return;
1201		#if EMULATED_PPC
1202	<	FlushCodeCache((uintptr)start, (uintptr)start + length);
1202	>	FlushCodeCache(start, start + length);
1203		#else
1204	<	flush_icache_range(start, (void *)((uintptr)start + length));
1204	>	flush_icache_range(start, start + length);
1205		#endif
1206		}
1207
1208
1209		/*
1210	<	*  Patch things after system startup (gets called by disk driver accRun routine)
1210	>	*  NVRAM watchdog thread (saves NVRAM every minute)
1211		*/
1212
1213	<	void PatchAfterStartup(void)
1213	>	static void nvram_watchdog(void)
1214		{
1215	<	#if EMULATED_PPC
1216	<	ExecuteNative(NATIVE_VIDEO_INSTALL_ACCEL);
1217	<	#else
1218	<	ExecutePPC(VideoInstallAccel);
1052	<	#endif
1053	<	InstallExtFS();
1215	>	if (memcmp(last_xpram, XPRAM, XPRAM_SIZE)) {
1216	>	memcpy(last_xpram, XPRAM, XPRAM_SIZE);
1217	>	SaveXPRAM();
1218	>	}
1219		}
1220
1056	–
1057	–	/*
1058	–	*  NVRAM watchdog thread (saves NVRAM every minute)
1059	–	*/
1060	–
1221		static void *nvram_func(void *arg)
1222		{
1223	<	struct timespec req = {60, 0};  // 1 minute
1224	<
1225	<	for (;;) {
1226	<	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	<	}
1223	>	while (!nvram_thread_cancel) {
1224	>	for (int i=0; i<60 && !nvram_thread_cancel; i++)
1225	>	Delay_usec(999999);             // Only wait 1 second so we quit promptly when nvram_thread_cancel becomes true
1226	>	nvram_watchdog();
1227		}
1228		return NULL;
1229		}
#	Line 1082 | Line 1236 | static void *nvram_func(void *arg)
1236		static void *tick_func(void *arg)
1237		{
1238		int tick_counter = 0;
1239	<	struct timespec req = {0, 16625000};
1239	>	uint64 start = GetTicks_usec();
1240	>	int64 ticks = 0;
1241	>	uint64 next = GetTicks_usec();
1242
1243	<	for (;;) {
1243	>	while (!tick_thread_cancel) {
1244
1245		// Wait
1246	<	nanosleep(&req, NULL);
1246	>	next += 16625;
1247	>	int64 delay = next - GetTicks_usec();
1248	>	if (delay > 0)
1249	>	Delay_usec(delay);
1250	>	else if (delay < -16625)
1251	>	next = GetTicks_usec();
1252	>	ticks++;
1253
1254		#if !EMULATED_PPC
1255		// Did we crash?
1256		if (emul_thread_fatal) {
1257
1258		// Yes, dump registers
1259	<	pt_regs *r = (pt_regs *)&sigsegv_regs;
1259	>	sigregs *r = &sigsegv_regs;
1260		char str[256];
1261	<	sprintf(str, "SIGSEGV\n"
1261	>	if (crash_reason == NULL)
1262	>	crash_reason = "SIGSEGV";
1263	>	sprintf(str, "%s\n"
1264		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1265		"  xer %08lx     cr %08lx  \n"
1266		"   r0 %08lx     r1 %08lx     r2 %08lx     r3 %08lx\n"
#	Line 1107 | Line 1271 | static void *tick_func(void *arg)
1271		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1272		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1273		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1274	+	crash_reason,
1275		r->nip, r->link, r->ctr, r->msr,
1276		r->xer, r->ccr,
1277		r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
#	Line 1142 | Line 1307 | static void *tick_func(void *arg)
1307		TriggerInterrupt();
1308		}
1309		}
1310	+
1311	+	uint64 end = GetTicks_usec();
1312	+	D(bug("%lld ticks in %lld usec = %f ticks/sec\n", ticks, end - start, ticks * 1000000.0 / (end - start)));
1313		return NULL;
1314		}
1315
#	Line 1152 | Line 1320 | static void *tick_func(void *arg)
1320
1321		void Set_pthread_attr(pthread_attr_t *attr, int priority)
1322		{
1323	<	// nothing to do
1323	>	#ifdef HAVE_PTHREADS
1324	>	pthread_attr_init(attr);
1325	>	#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
1326	>	// Some of these only work for superuser
1327	>	if (geteuid() == 0) {
1328	>	pthread_attr_setinheritsched(attr, PTHREAD_EXPLICIT_SCHED);
1329	>	pthread_attr_setschedpolicy(attr, SCHED_FIFO);
1330	>	struct sched_param fifo_param;
1331	>	fifo_param.sched_priority = ((sched_get_priority_min(SCHED_FIFO) +
1332	>	sched_get_priority_max(SCHED_FIFO)) / 2 +
1333	>	priority);
1334	>	pthread_attr_setschedparam(attr, &fifo_param);
1335	>	}
1336	>	if (pthread_attr_setscope(attr, PTHREAD_SCOPE_SYSTEM) != 0) {
1337	>	#ifdef PTHREAD_SCOPE_BOUND_NP
1338	>	// If system scope is not available (eg. we're not running
1339	>	// with CAP_SCHED_MGT capability on an SGI box), try bound
1340	>	// scope.  It exposes pthread scheduling to the kernel,
1341	>	// without setting realtime priority.
1342	>	pthread_attr_setscope(attr, PTHREAD_SCOPE_BOUND_NP);
1343	>	#endif
1344	>	}
1345	>	#endif
1346	>	#endif
1347		}
1348
1349
#	Line 1168 | Line 1359 | struct B2_mutex {
1359		pthread_mutexattr_init(&attr);
1360		// Initialize the mutex for priority inheritance --
1361		// required for accurate timing.
1362	<	#ifdef HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL
1362	>	#if defined(HAVE_PTHREAD_MUTEXATTR_SETPROTOCOL) && !defined(__CYGWIN__)
1363		pthread_mutexattr_setprotocol(&attr, PTHREAD_PRIO_INHERIT);
1364		#endif
1365		#if defined(HAVE_PTHREAD_MUTEXATTR_SETTYPE) && defined(PTHREAD_MUTEX_NORMAL)
#	Line 1239 | Line 1430 | void B2_delete_mutex(B2_mutex *mutex)
1430		*  Trigger signal USR2 from another thread
1431		*/
1432
1433	<	#if !EMULATED_PPC || ASYNC_IRQ
1433	>	#if !EMULATED_PPC
1434		void TriggerInterrupt(void)
1435		{
1436	<	if (ready_for_signals)
1436	>	if (ready_for_signals) {
1437	>	idle_resume();
1438		pthread_kill(emul_thread, SIGUSR2);
1439	+	}
1440		}
1441		#endif
1442
#	Line 1271 | Line 1464 | void ClearInterruptFlag(uint32 flag)
1464
1465		void DisableInterrupt(void)
1466		{
1467	+	#if EMULATED_PPC
1468	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) + 1);
1469	+	#else
1470		atomic_add((int *)XLM_IRQ_NEST, 1);
1471	+	#endif
1472		}
1473
1474
#	Line 1281 | Line 1478 | void DisableInterrupt(void)
1478
1479		void EnableInterrupt(void)
1480		{
1481	+	#if EMULATED_PPC
1482	+	WriteMacInt32(XLM_IRQ_NEST, int32(ReadMacInt32(XLM_IRQ_NEST)) - 1);
1483	+	#else
1484		atomic_add((int *)XLM_IRQ_NEST, -1);
1485	+	#endif
1486		}
1487
1488
#	Line 1289 | Line 1490 | void EnableInterrupt(void)
1490		*  USR2 handler
1491		*/
1492
1493	<	#if EMULATED_PPC
1494	<	static void sigusr2_handler(int sig)
1493	>	#if !EMULATED_PPC
1494	>	void sigusr2_handler(int sig, siginfo_t *sip, void *scp)
1495		{
1496	<	#if ASYNC_IRQ
1497	<	extern void HandleInterrupt(void);
1498	<	HandleInterrupt();
1496	>	machine_regs *r = MACHINE_REGISTERS(scp);
1497	>
1498	>	#ifdef SYSTEM_CLOBBERS_R2
1499	>	// Restore pointer to Thread Local Storage
1500	>	set_r2(TOC);
1501	>	#endif
1502	>	#ifdef SYSTEM_CLOBBERS_R13
1503	>	// Restore pointer to .sdata section
1504	>	set_r13(R13);
1505	>	#endif
1506	>
1507	>	#ifdef USE_SDL_VIDEO
1508	>	// We must fill in the events queue in the same thread that did call SDL_SetVideoMode()
1509	>	SDL_PumpEvents();
1510		#endif
1299	–	}
1300	–	#else
1301	–	static void sigusr2_handler(int sig, sigcontext_struct *sc)
1302	–	{
1303	–	pt_regs *r = sc->regs;
1511
1512		// Do nothing if interrupts are disabled
1513		if (*(int32 *)XLM_IRQ_NEST > 0)
#	Line 1314 | Line 1521 | static void sigusr2_handler(int sig, sig
1521		case MODE_68K:
1522		// 68k emulator active, trigger 68k interrupt level 1
1523		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1524	<	r->ccr |= ntohl(kernel_data->v[0x674 >> 2]);
1524	>	r->cr() |= ntohl(kernel_data->v[0x674 >> 2]);
1525		break;
1526
1527		#if INTERRUPTS_IN_NATIVE_MODE
1528		case MODE_NATIVE:
1529		// 68k emulator inactive, in nanokernel?
1530	<	if (r->gpr[1] != KernelDataAddr) {
1530	>	if (r->gpr(1) != KernelDataAddr) {
1531	>
1532	>	// Set extra stack for SIGSEGV handler
1533	>	sigaltstack(&extra_stack, NULL);
1534	>
1535		// Prepare for 68k interrupt level 1
1536		WriteMacInt16(ntohl(kernel_data->v[0x67c >> 2]), 1);
1537		WriteMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc, ReadMacInt32(ntohl(kernel_data->v[0x658 >> 2]) + 0xdc) | ntohl(kernel_data->v[0x674 >> 2]));
1538
1539		// Execute nanokernel interrupt routine (this will activate the 68k emulator)
1540	<	atomic_add((int32 *)XLM_IRQ_NEST, 1);
1540	>	DisableInterrupt();
1541		if (ROMType == ROMTYPE_NEWWORLD)
1542		ppc_interrupt(ROM_BASE + 0x312b1c, KernelDataAddr);
1543		else
1544		ppc_interrupt(ROM_BASE + 0x312a3c, KernelDataAddr);
1545	+
1546	+	// Reset normal stack
1547	+	sigaltstack(&sig_stack, NULL);
1548		}
1549		break;
1550		#endif
#	Line 1341 | Line 1555 | static void sigusr2_handler(int sig, sig
1555		if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1556
1557		// Set extra stack for SIGSEGV handler
1558	<	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);
1558	>	sigaltstack(&extra_stack, NULL);
1559		#if 1
1560		// Execute full 68k interrupt routine
1561		M68kRegisters r;
#	Line 1367 | Line 1577 | static void sigusr2_handler(int sig, sig
1577		if (InterruptFlags & INTFLAG_VIA) {
1578		ClearInterruptFlag(INTFLAG_VIA);
1579		ADBInterrupt();
1580	<	ExecutePPC(VideoVBL);
1580	>	ExecuteNative(NATIVE_VIDEO_VBL);
1581		}
1582		}
1583		#endif
1584	<	// Reset normal signal stack
1585	<	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);
1584	>	// Reset normal stack
1585	>	sigaltstack(&sig_stack, NULL);
1586		}
1587		break;
1588		#endif
#	Line 1389 | Line 1596 | static void sigusr2_handler(int sig, sig
1596		*/
1597
1598		#if !EMULATED_PPC
1599	<	static void sigsegv_handler(int sig, sigcontext_struct *sc)
1599	>	static void sigsegv_handler(int sig, siginfo_t *sip, void *scp)
1600		{
1601	<	pt_regs *r = sc->regs;
1601	>	machine_regs *r = MACHINE_REGISTERS(scp);
1602
1603		// Get effective address
1604	<	uint32 addr = r->dar;
1604	>	uint32 addr = r->dar();
1605
1606	+	#ifdef SYSTEM_CLOBBERS_R2
1607	+	// Restore pointer to Thread Local Storage
1608	+	set_r2(TOC);
1609	+	#endif
1610	+	#ifdef SYSTEM_CLOBBERS_R13
1611	+	// Restore pointer to .sdata section
1612	+	set_r13(R13);
1613	+	#endif
1614	+
1615		#if ENABLE_VOSF
1616		// Handle screen fault.
1617		extern bool Screen_fault_handler(sigsegv_address_t fault_address, sigsegv_address_t fault_instruction);
1618	<	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->nip))
1618	>	if (Screen_fault_handler((sigsegv_address_t)addr, (sigsegv_address_t)r->pc()))
1619		return;
1620		#endif
1621
1622		num_segv++;
1623
1624	<	// Fault in Mac ROM or RAM?
1625	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1624	>	// Fault in Mac ROM or RAM or DR Cache?
1625	>	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));
1626		if (mac_fault) {
1627
1628		// "VM settings" during MacOS 8 installation
1629	<	if (r->nip == ROM_BASE + 0x488160 && r->gpr[20] == 0xf8000000) {
1630	<	r->nip += 4;
1631	<	r->gpr[8] = 0;
1629	>	if (r->pc() == ROM_BASE + 0x488160 && r->gpr(20) == 0xf8000000) {
1630	>	r->pc() += 4;
1631	>	r->gpr(8) = 0;
1632		return;
1633
1634		// MacOS 8.5 installation
1635	<	} else if (r->nip == ROM_BASE + 0x488140 && r->gpr[16] == 0xf8000000) {
1636	<	r->nip += 4;
1637	<	r->gpr[8] = 0;
1635	>	} else if (r->pc() == ROM_BASE + 0x488140 && r->gpr(16) == 0xf8000000) {
1636	>	r->pc() += 4;
1637	>	r->gpr(8) = 0;
1638		return;
1639
1640		// MacOS 8 serial drivers on startup
1641	<	} else if (r->nip == ROM_BASE + 0x48e080 && (r->gpr[8] == 0xf3012002 || r->gpr[8] == 0xf3012000)) {
1642	<	r->nip += 4;
1643	<	r->gpr[8] = 0;
1641	>	} else if (r->pc() == ROM_BASE + 0x48e080 && (r->gpr(8) == 0xf3012002 || r->gpr(8) == 0xf3012000)) {
1642	>	r->pc() += 4;
1643	>	r->gpr(8) = 0;
1644		return;
1645
1646		// MacOS 8.1 serial drivers on startup
1647	<	} else if (r->nip == ROM_BASE + 0x48c5e0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1648	<	r->nip += 4;
1647	>	} else if (r->pc() == ROM_BASE + 0x48c5e0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1648	>	r->pc() += 4;
1649	>	return;
1650	>	} else if (r->pc() == ROM_BASE + 0x4a10a0 && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1651	>	r->pc() += 4;
1652	>	return;
1653	>
1654	>	// MacOS 8.6 serial drivers on startup (with DR Cache and OldWorld ROM)
1655	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(16) == 0xf3012002 || r->gpr(16) == 0xf3012000)) {
1656	>	r->pc() += 4;
1657		return;
1658	<	} else if (r->nip == ROM_BASE + 0x4a10a0 && (r->gpr[20] == 0xf3012002 || r->gpr[20] == 0xf3012000)) {
1659	<	r->nip += 4;
1658	>	} else if ((r->pc() - DR_CACHE_BASE) < DR_CACHE_SIZE && (r->gpr(20) == 0xf3012002 || r->gpr(20) == 0xf3012000)) {
1659	>	r->pc() += 4;
1660		return;
1661		}
1662
1663		// Get opcode and divide into fields
1664	<	uint32 opcode = *((uint32 *)r->nip);
1664	>	uint32 opcode = *((uint32 *)r->pc());
1665		uint32 primop = opcode >> 26;
1666		uint32 exop = (opcode >> 1) & 0x3ff;
1667		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1526 | Line 1750 | static void sigsegv_handler(int sig, sig
1750		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_NORM; break;
1751		case 45:        // sthu
1752		transfer_type = TYPE_STORE; transfer_size = SIZE_HALFWORD; addr_mode = MODE_U; break;
1753	+	#if EMULATE_UNALIGNED_LOADSTORE_MULTIPLE
1754	+	case 46:        // lmw
1755	+	if ((addr % 4) != 0) {
1756	+	uint32 ea = addr;
1757	+	D(bug("WARNING: unaligned lmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1758	+	for (int i = rd; i <= 31; i++) {
1759	+	r->gpr(i) = ReadMacInt32(ea);
1760	+	ea += 4;
1761	+	}
1762	+	r->pc() += 4;
1763	+	goto rti;
1764	+	}
1765	+	break;
1766	+	case 47:        // stmw
1767	+	if ((addr % 4) != 0) {
1768	+	uint32 ea = addr;
1769	+	D(bug("WARNING: unaligned stmw to EA=%08x from IP=%08x\n", ea, r->pc()));
1770	+	for (int i = rd; i <= 31; i++) {
1771	+	WriteMacInt32(ea, r->gpr(i));
1772	+	ea += 4;
1773	+	}
1774	+	r->pc() += 4;
1775	+	goto rti;
1776	+	}
1777	+	break;
1778	+	#endif
1779		}
1780
1781	<	// Ignore ROM writes
1782	<	if (transfer_type == TYPE_STORE && addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) {
1783	<	//                      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));
1781	>	// Ignore ROM writes (including to the zero page, which is read-only)
1782	>	if (transfer_type == TYPE_STORE &&
1783	>	((addr >= ROM_BASE && addr < ROM_BASE + ROM_SIZE) ||
1784	>	(addr >= SheepMem::ZeroPage() && addr < SheepMem::ZeroPage() + SheepMem::PageSize()))) {
1785	>	//                      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()));
1786		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1787	<	r->gpr[ra] = addr;
1788	<	r->nip += 4;
1787	>	r->gpr(ra) = addr;
1788	>	r->pc() += 4;
1789		goto rti;
1790		}
1791
1792		// Ignore illegal memory accesses?
1793		if (PrefsFindBool("ignoresegv")) {
1794		if (addr_mode == MODE_U || addr_mode == MODE_UX)
1795	<	r->gpr[ra] = addr;
1795	>	r->gpr(ra) = addr;
1796		if (transfer_type == TYPE_LOAD)
1797	<	r->gpr[rd] = 0;
1798	<	r->nip += 4;
1797	>	r->gpr(rd) = 0;
1798	>	r->pc() += 4;
1799		goto rti;
1800		}
1801
#	Line 1551 | Line 1803 | static void sigsegv_handler(int sig, sig
1803		if (!PrefsFindBool("nogui")) {
1804		char str[256];
1805		if (transfer_type == TYPE_LOAD || transfer_type == TYPE_STORE)
1806	<	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]);
1806	>	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));
1807		else
1808	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1808	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1809		ErrorAlert(str);
1810		QuitEmulator();
1811		return;
#	Line 1561 | Line 1813 | static void sigsegv_handler(int sig, sig
1813		}
1814
1815		// For all other errors, jump into debugger (sort of...)
1816	+	crash_reason = (sig == SIGBUS) ? "SIGBUS" : "SIGSEGV";
1817		if (!ready_for_signals) {
1818	<	printf("SIGSEGV\n");
1819	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1818	>	printf("%s\n");
1819	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1820		printf(
1821		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1822		"  xer %08lx     cr %08lx  \n"
#	Line 1575 | Line 1828 | static void sigsegv_handler(int sig, sig
1828		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
1829		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
1830		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
1831	<	r->nip, r->link, r->ctr, r->msr,
1832	<	r->xer, r->ccr,
1833	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
1834	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
1835	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
1836	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
1837	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
1838	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
1839	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
1840	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
1831	>	crash_reason,
1832	>	r->pc(), r->lr(), r->ctr(), r->msr(),
1833	>	r->xer(), r->cr(),
1834	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
1835	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
1836	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
1837	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
1838	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
1839	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
1840	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
1841	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
1842		exit(1);
1843		QuitEmulator();
1844		return;
1845		} else {
1846		// We crashed. Save registers, tell tick thread and loop forever
1847	<	sigsegv_regs = *(sigregs *)r;
1847	>	build_sigregs(&sigsegv_regs, r);
1848		emul_thread_fatal = true;
1849		for (;;) ;
1850		}
#	Line 1602 | Line 1856 | rti:;
1856		*  SIGILL handler
1857		*/
1858
1859	<	static void sigill_handler(int sig, sigcontext_struct *sc)
1859	>	static void sigill_handler(int sig, siginfo_t *sip, void *scp)
1860		{
1861	<	pt_regs *r = sc->regs;
1861	>	machine_regs *r = MACHINE_REGISTERS(scp);
1862		char str[256];
1863
1864	+	#ifdef SYSTEM_CLOBBERS_R2
1865	+	// Restore pointer to Thread Local Storage
1866	+	set_r2(TOC);
1867	+	#endif
1868	+	#ifdef SYSTEM_CLOBBERS_R13
1869	+	// Restore pointer to .sdata section
1870	+	set_r13(R13);
1871	+	#endif
1872	+
1873		// Fault in Mac ROM or RAM?
1874	<	bool mac_fault = (r->nip >= ROM_BASE) && (r->nip < (ROM_BASE + ROM_AREA_SIZE)) || (r->nip >= RAMBase) && (r->nip < (RAMBase + RAMSize));
1874	>	bool mac_fault = (r->pc() >= ROM_BASE) && (r->pc() < (ROM_BASE + ROM_AREA_SIZE)) || (r->pc() >= RAMBase) && (r->pc() < (RAMBase + RAMSize));
1875		if (mac_fault) {
1876
1877		// Get opcode and divide into fields
1878	<	uint32 opcode = *((uint32 *)r->nip);
1878	>	uint32 opcode = *((uint32 *)r->pc());
1879		uint32 primop = opcode >> 26;
1880		uint32 exop = (opcode >> 1) & 0x3ff;
1881		uint32 ra = (opcode >> 16) & 0x1f;
#	Line 1623 | Line 1886 | static void sigill_handler(int sig, sigc
1886		switch (primop) {
1887		case 9:         // POWER instructions
1888		case 22:
1889	<	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->nip, r->gpr[1], opcode);
1889	>	power_inst:             sprintf(str, GetString(STR_POWER_INSTRUCTION_ERR), r->pc(), r->gpr(1), opcode);
1890		ErrorAlert(str);
1891		QuitEmulator();
1892		return;
#	Line 1631 | Line 1894 | power_inst:            sprintf(str, GetString(STR_
1894		case 31:
1895		switch (exop) {
1896		case 83:        // mfmsr
1897	<	r->gpr[rd] = 0xf072;
1898	<	r->nip += 4;
1897	>	r->gpr(rd) = 0xf072;
1898	>	r->pc() += 4;
1899		goto rti;
1900
1901		case 210:       // mtsr
1902		case 242:       // mtsrin
1903		case 306:       // tlbie
1904	<	r->nip += 4;
1904	>	r->pc() += 4;
1905		goto rti;
1906
1907		case 339: {     // mfspr
#	Line 1654 | Line 1917 | power_inst:            sprintf(str, GetString(STR_
1917		case 957:       // PMC3
1918		case 958:       // PMC4
1919		case 959:       // SDA
1920	<	r->nip += 4;
1920	>	r->pc() += 4;
1921		goto rti;
1922		case 25:        // SDR1
1923	<	r->gpr[rd] = 0xdead001f;
1924	<	r->nip += 4;
1923	>	r->gpr(rd) = 0xdead001f;
1924	>	r->pc() += 4;
1925		goto rti;
1926		case 287:       // PVR
1927	<	r->gpr[rd] = PVR;
1928	<	r->nip += 4;
1927	>	r->gpr(rd) = PVR;
1928	>	r->pc() += 4;
1929		goto rti;
1930		}
1931		break;
#	Line 1698 | Line 1961 | power_inst:            sprintf(str, GetString(STR_
1961		case 957:       // PMC3
1962		case 958:       // PMC4
1963		case 959:       // SDA
1964	<	r->nip += 4;
1964	>	r->pc() += 4;
1965		goto rti;
1966		}
1967		break;
#	Line 1717 | Line 1980 | power_inst:            sprintf(str, GetString(STR_
1980
1981		// In GUI mode, show error alert
1982		if (!PrefsFindBool("nogui")) {
1983	<	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->nip, r->gpr[24], r->gpr[1], opcode);
1983	>	sprintf(str, GetString(STR_UNKNOWN_SEGV_ERR), r->pc(), r->gpr(24), r->gpr(1), opcode);
1984		ErrorAlert(str);
1985		QuitEmulator();
1986		return;
#	Line 1725 | Line 1988 | power_inst:            sprintf(str, GetString(STR_
1988		}
1989
1990		// For all other errors, jump into debugger (sort of...)
1991	+	crash_reason = "SIGILL";
1992		if (!ready_for_signals) {
1993	<	printf("SIGILL\n");
1994	<	printf(" sigcontext %p, pt_regs %p\n", sc, r);
1993	>	printf("%s\n");
1994	>	printf(" sigcontext %p, machine_regs %p\n", scp, r);
1995		printf(
1996		"   pc %08lx     lr %08lx    ctr %08lx    msr %08lx\n"
1997		"  xer %08lx     cr %08lx  \n"
#	Line 1739 | Line 2003 | power_inst:            sprintf(str, GetString(STR_
2003		"  r20 %08lx    r21 %08lx    r22 %08lx    r23 %08lx\n"
2004		"  r24 %08lx    r25 %08lx    r26 %08lx    r27 %08lx\n"
2005		"  r28 %08lx    r29 %08lx    r30 %08lx    r31 %08lx\n",
2006	<	r->nip, r->link, r->ctr, r->msr,
2007	<	r->xer, r->ccr,
2008	<	r->gpr[0], r->gpr[1], r->gpr[2], r->gpr[3],
2009	<	r->gpr[4], r->gpr[5], r->gpr[6], r->gpr[7],
2010	<	r->gpr[8], r->gpr[9], r->gpr[10], r->gpr[11],
2011	<	r->gpr[12], r->gpr[13], r->gpr[14], r->gpr[15],
2012	<	r->gpr[16], r->gpr[17], r->gpr[18], r->gpr[19],
2013	<	r->gpr[20], r->gpr[21], r->gpr[22], r->gpr[23],
2014	<	r->gpr[24], r->gpr[25], r->gpr[26], r->gpr[27],
2015	<	r->gpr[28], r->gpr[29], r->gpr[30], r->gpr[31]);
2006	>	crash_reason,
2007	>	r->pc(), r->lr(), r->ctr(), r->msr(),
2008	>	r->xer(), r->cr(),
2009	>	r->gpr(0), r->gpr(1), r->gpr(2), r->gpr(3),
2010	>	r->gpr(4), r->gpr(5), r->gpr(6), r->gpr(7),
2011	>	r->gpr(8), r->gpr(9), r->gpr(10), r->gpr(11),
2012	>	r->gpr(12), r->gpr(13), r->gpr(14), r->gpr(15),
2013	>	r->gpr(16), r->gpr(17), r->gpr(18), r->gpr(19),
2014	>	r->gpr(20), r->gpr(21), r->gpr(22), r->gpr(23),
2015	>	r->gpr(24), r->gpr(25), r->gpr(26), r->gpr(27),
2016	>	r->gpr(28), r->gpr(29), r->gpr(30), r->gpr(31));
2017		exit(1);
2018		QuitEmulator();
2019		return;
2020		} else {
2021		// We crashed. Save registers, tell tick thread and loop forever
2022	<	sigsegv_regs = *(sigregs *)r;
2022	>	build_sigregs(&sigsegv_regs, r);
2023		emul_thread_fatal = true;
2024		for (;;) ;
2025		}
#	Line 1764 | Line 2029 | rti:;
2029
2030
2031		/*
2032	+	*  Helpers to share 32-bit addressable data with MacOS
2033	+	*/
2034	+
2035	+	bool SheepMem::Init(void)
2036	+	{
2037	+	// Size of a native page
2038	+	page_size = getpagesize();
2039	+
2040	+	// Allocate SheepShaver globals
2041	+	proc = base;
2042	+	if (vm_mac_acquire(base, size) < 0)
2043	+	return false;
2044	+
2045	+	// Allocate page with all bits set to 0, right in the middle
2046	+	// This is also used to catch undesired overlaps between proc and data areas
2047	+	zero_page = proc + (size / 2);
2048	+	Mac_memset(zero_page, 0, page_size);
2049	+	if (vm_protect(Mac2HostAddr(zero_page), page_size, VM_PAGE_READ) < 0)
2050	+	return false;
2051	+
2052	+	#if EMULATED_PPC
2053	+	// Allocate alternate stack for PowerPC interrupt routine
2054	+	sig_stack = base + size;
2055	+	if (vm_mac_acquire(sig_stack, SIG_STACK_SIZE) < 0)
2056	+	return false;
2057	+	#endif
2058	+
2059	+	data = base + size;
2060	+	return true;
2061	+	}
2062	+
2063	+	void SheepMem::Exit(void)
2064	+	{
2065	+	if (data) {
2066	+	// Delete SheepShaver globals
2067	+	vm_mac_release(base, size);
2068	+
2069	+	#if EMULATED_PPC
2070	+	// Delete alternate stack for PowerPC interrupt routine
2071	+	vm_mac_release(sig_stack, SIG_STACK_SIZE);
2072	+	#endif
2073	+	}
2074	+	}
2075	+
2076	+
2077	+	/*
2078		*  Display alert
2079		*/
2080
#	Line 1812 | Line 2123 | void display_alert(int title_id, int pre
2123
2124		void ErrorAlert(const char *text)
2125		{
2126	<	#ifdef ENABLE_GTK
2126	>	if (gui_connection) {
2127	>	if (rpc_method_invoke(gui_connection, RPC_METHOD_ERROR_ALERT, RPC_TYPE_STRING, text, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR &&
2128	>	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
2129	>	return;
2130	>	}
2131	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2132		if (PrefsFindBool("nogui") || x_display == NULL) {
2133		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
2134		return;
#	Line 1831 | Line 2147 | void ErrorAlert(const char *text)
2147
2148		void WarningAlert(const char *text)
2149		{
2150	<	#ifdef ENABLE_GTK
2150	>	if (gui_connection) {
2151	>	if (rpc_method_invoke(gui_connection, RPC_METHOD_WARNING_ALERT, RPC_TYPE_STRING, text, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR &&
2152	>	rpc_method_wait_for_reply(gui_connection, RPC_TYPE_INVALID) == RPC_ERROR_NO_ERROR)
2153	>	return;
2154	>	}
2155	>	#if defined(ENABLE_GTK) && !defined(USE_SDL_VIDEO)
2156		if (PrefsFindBool("nogui") || x_display == NULL) {
2157		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
2158		return;

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