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

Comparing BasiliskII/src/Unix/main_unix.cpp (file contents):
Revision 1.11 by cebix, 2000-04-10T18:53:02Z vs.
Revision 1.33 by gbeauche, 2001-06-26T22:35:41Z

#	Line 1 | Line 1
1		/*
2		*  main_unix.cpp - Startup code for Unix
3		*
4	<	*  Basilisk II (C) 1997-2000 Christian Bauer
4	>	*  Basilisk II (C) 1997-2001 Christian Bauer
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 22 | Line 22
22
23		#include <stdio.h>
24		#include <stdlib.h>
25	–	#include <pthread.h>
25		#include <signal.h>
26	+	#include <errno.h>
27	+	#include <X11/Xlib.h>
28	+
29	+	#ifdef HAVE_PTHREADS
30	+	# include <pthread.h>
31	+	#endif
32	+
33	+	#if REAL_ADDRESSING || DIRECT_ADDRESSING
34	+	# include <sys/mman.h>
35	+	#endif
36	+
37	+	#if !EMULATED_68K && defined(__NetBSD__)
38	+	# include <m68k/sync_icache.h>
39	+	# include <m68k/frame.h>
40	+	# include <sys/param.h>
41	+	# include <sys/sysctl.h>
42	+	struct sigstate {
43	+	int ss_flags;
44	+	struct frame ss_frame;
45	+	struct fpframe ss_fpstate;
46	+	};
47	+	# define SS_FPSTATE  0x02
48	+	# define SS_USERREGS 0x04
49	+	#endif
50	+
51	+	#ifdef ENABLE_GTK
52	+	# include <gtk/gtk.h>
53	+	# include <gdk/gdk.h>
54	+	#endif
55	+
56	+	#ifdef ENABLE_XF86_DGA
57	+	# include <X11/Xutil.h>
58	+	# include <X11/extensions/xf86dga.h>
59	+	#endif
60
61		#include "cpu_emulation.h"
62		#include "sys.h"
#	Line 31 | Line 64
64		#include "xpram.h"
65		#include "timer.h"
66		#include "video.h"
67	+	#include "emul_op.h"
68		#include "prefs.h"
69		#include "prefs_editor.h"
70		#include "macos_util.h"
71		#include "user_strings.h"
72		#include "version.h"
73		#include "main.h"
74	+	#include "vm_alloc.h"
75	+
76	+	#ifdef ENABLE_MON
77	+	# include "mon.h"
78	+	#endif
79
80		#define DEBUG 0
81		#include "debug.h"
82
83
84	<	#include <X11/Xlib.h>
85	<
86	<	#if ENABLE_GTK
87	<	#include <gtk/gtk.h>
49	<	#endif
50	<
51	<	#if ENABLE_XF86_DGA
52	<	#include <X11/Xlib.h>
53	<	#include <X11/Xutil.h>
54	<	#include <X11/extensions/xf86dga.h>
55	<	#endif
84	>	// Constants
85	>	const char ROM_FILE_NAME[] = "ROM";
86	>	const int SIG_STACK_SIZE = SIGSTKSZ;    // Size of signal stack
87	>	const int SCRATCH_MEM_SIZE = 0x10000;   // Size of scratch memory area
88
57	–	#if ENABLE_MON
58	–	#include "mon.h"
59	–	#endif
89
90	<	#ifdef USE_MAPPED_MEMORY
91	<	#include <sys/mman.h>
92	<	extern char *address_space, *good_address_map;
90	>	#if !EMULATED_68K
91	>	// RAM and ROM pointers
92	>	uint32 RAMBaseMac;              // RAM base (Mac address space)
93	>	uint8 *RAMBaseHost;             // RAM base (host address space)
94	>	uint32 RAMSize;                 // Size of RAM
95	>	uint32 ROMBaseMac;              // ROM base (Mac address space)
96	>	uint8 *ROMBaseHost;             // ROM base (host address space)
97	>	uint32 ROMSize;                 // Size of ROM
98		#endif
99
100
67	–	// Constants
68	–	const char ROM_FILE_NAME[] = "ROM";
69	–
70	–
101		// CPU and FPU type, addressing mode
102		int CPUType;
103		bool CPUIs68060;
#	Line 76 | Line 106 | bool TwentyFourBitAddressing;
106
107
108		// Global variables
109	<	static char *x_display_name = NULL;                                     // X11 display name
109	>	char *x_display_name = NULL;                                            // X11 display name
110		Display *x_display = NULL;                                                      // X11 display handle
111
112	+	static uint8 last_xpram[256];                                           // Buffer for monitoring XPRAM changes
113	+
114	+	#ifdef HAVE_PTHREADS
115	+	static pthread_t emul_thread;                                           // Handle of MacOS emulation thread (main thread)
116	+
117		static bool xpram_thread_active = false;                        // Flag: XPRAM watchdog installed
118		static volatile bool xpram_thread_cancel = false;       // Flag: Cancel XPRAM thread
119		static pthread_t xpram_thread;                                          // XPRAM watchdog
#	Line 88 | Line 123 | static volatile bool tick_thread_cancel
123		static pthread_t tick_thread;                                           // 60Hz thread
124		static pthread_attr_t tick_thread_attr;                         // 60Hz thread attributes
125
126	+	#if EMULATED_68K
127		static pthread_mutex_t intflag_lock = PTHREAD_MUTEX_INITIALIZER;        // Mutex to protect InterruptFlags
128	+	#endif
129	+	#endif
130	+
131	+	#if !EMULATED_68K
132	+	#define SIG_IRQ SIGUSR1
133	+	static struct sigaction sigirq_sa;      // Virtual 68k interrupt signal
134	+	static struct sigaction sigill_sa;      // Illegal instruction
135	+	static void *sig_stack = NULL;          // Stack for signal handlers
136	+	uint16 EmulatedSR;                                      // Emulated bits of SR (supervisor bit and interrupt mask)
137	+	#endif
138	+
139	+	#if USE_SCRATCHMEM_SUBTERFUGE
140	+	uint8 *ScratchMem = NULL;                       // Scratch memory for Mac ROM writes
141	+	#endif
142	+
143	+	static struct sigaction timer_sa;       // sigaction used for timer
144
145		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
146		#define SIG_TIMER SIGRTMIN
147	<	static struct sigaction timer_sa;                                       // sigaction used for timer
96	<	static timer_t timer;                                                           // 60Hz timer
147	>	static timer_t timer;                           // 60Hz timer
148		#endif
149
150	<	#if ENABLE_MON
151	<	static struct sigaction sigint_sa;                                      // sigaction for SIGINT handler
150	>	#ifdef ENABLE_MON
151	>	static struct sigaction sigint_sa;      // sigaction for SIGINT handler
152		static void sigint_handler(...);
153		#endif
154
155	+	#if REAL_ADDRESSING
156	+	static bool lm_area_mapped = false;     // Flag: Low Memory area mmap()ped
157	+	#endif
158	+
159
160		// Prototypes
161		static void *xpram_func(void *arg);
162		static void *tick_func(void *arg);
163		static void one_tick(...);
164	+	#if !EMULATED_68K
165	+	static void sigirq_handler(int sig, int code, struct sigcontext *scp);
166	+	static void sigill_handler(int sig, int code, struct sigcontext *scp);
167	+	extern "C" void EmulOpTrampoline(void);
168	+	#endif
169
170
171		/*
#	Line 130 | Line 190 | char *strdup(const char *s)
190		*  Main program
191		*/
192
193	+	static void usage(const char *prg_name)
194	+	{
195	+	printf("Usage: %s [OPTION...]\n", prg_name);
196	+	printf("\nUnix options:\n");
197	+	printf("  --display STRING\n    X display to use\n");
198	+	printf("  --break ADDRESS\n    set ROM breakpoint\n");
199	+	printf("  --rominfo\n    dump ROM information\n");
200	+	PrefsPrintUsage();
201	+	exit(0);
202	+	}
203	+
204		int main(int argc, char **argv)
205		{
206	+	char str[256];
207	+
208		// Initialize variables
209		RAMBaseHost = NULL;
210		ROMBaseHost = NULL;
#	Line 142 | Line 215 | int main(int argc, char **argv)
215		printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR);
216		printf(" %s\n", GetString(STR_ABOUT_TEXT2));
217
218	<	// Parse arguments
218	>	#ifdef ENABLE_GTK
219	>	// Init GTK
220	>	gtk_set_locale();
221	>	gtk_init(&argc, &argv);
222	>	x_display_name = gdk_get_display(); // gtk_init() handles and removes the "--display" argument
223	>	#endif
224	>
225	>	// Read preferences
226	>	PrefsInit(argc, argv);
227	>
228	>	// Parse command line arguments
229		for (int i=1; i<argc; i++) {
230	<	if (strcmp(argv[i], "-display") == 0 && ++i < argc)
231	<	x_display_name = argv[i];
232	<	else if (strcmp(argv[i], "-break") == 0 && ++i < argc)
233	<	ROMBreakpoint = strtol(argv[i], NULL, 0);
234	<	else if (strcmp(argv[i], "-rominfo") == 0)
230	>	if (strcmp(argv[i], "--help") == 0) {
231	>	usage(argv[0]);
232	>	} else if (strcmp(argv[i], "--display") == 0) {
233	>	i++;
234	>	if (i < argc)
235	>	x_display_name = strdup(argv[i]);
236	>	} else if (strcmp(argv[i], "--break") == 0) {
237	>	i++;
238	>	if (i < argc)
239	>	ROMBreakpoint = strtol(argv[i], NULL, 0);
240	>	} else if (strcmp(argv[i], "--rominfo") == 0) {
241		PrintROMInfo = true;
242	+	} else if (argv[i][0] == '-') {
243	+	fprintf(stderr, "Unrecognized option '%s'\n", argv[i]);
244	+	usage(argv[0]);
245	+	}
246		}
247
248		// Open display
#	Line 161 | Line 254 | int main(int argc, char **argv)
254		QuitEmulator();
255		}
256
257	<	#if ENABLE_XF86_DGA && !ENABLE_MON
257	>	#if defined(ENABLE_XF86_DGA) && !defined(ENABLE_MON)
258		// Fork out, so we can return from fullscreen mode when things get ugly
259		XF86DGAForkApp(DefaultScreen(x_display));
260		#endif
261
169	–	#if ENABLE_GTK
170	–	// Init GTK
171	–	gtk_set_locale();
172	–	gtk_init(&argc, &argv);
173	–	#endif
174	–
175	–	// Read preferences
176	–	PrefsInit();
177	–
262		// Init system routines
263		SysInit();
264
#	Line 190 | Line 274 | int main(int argc, char **argv)
274		RAMSize = 1024*1024;
275		}
276
277	<	// Create areas for Mac RAM and ROM
278	<	#ifdef USE_MAPPED_MEMORY
279	<	int fd = open("/dev/zero", O_RDWR);
280	<	good_address_map = (char *)mmap(NULL, 1<<24, PROT_READ, MAP_PRIVATE, fd, 0);
281	<	address_space = (char *)mmap(NULL, 1<<24, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
282	<	if ((int)address_space < 0 || (int)good_address_map < 0) {
283	<	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
284	<	QuitEmulator();
285	<	}
286	<	RAMBaseHost = (uint8 *)mmap(address_space, RAMSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, fd, 0);
287	<	ROMBaseHost = (uint8 *)mmap(address_space + 0x00400000, 0x80000, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, fd, 0);
288	<	close(fd);
289	<	char *nam = tmpnam(NULL);
290	<	int good_address_fd = open(nam, O_CREAT | O_RDWR, 0600);
291	<	char buffer[4096];
208	<	memset(buffer, 1, sizeof(buffer));
209	<	write(good_address_fd, buffer, sizeof(buffer));
210	<	unlink(nam);
211	<	for (int i=0; i<RAMSize; i+=4096)
212	<	mmap(good_address_map + i, 4096, PROT_READ, MAP_FIXED | MAP_PRIVATE, good_address_fd, 0);
213	<	for (int i=0; i<0x80000; i+=4096)
214	<	mmap(good_address_map + i + 0x00400000, 4096, PROT_READ, MAP_FIXED | MAP_PRIVATE, good_address_fd, 0);
277	>	#if REAL_ADDRESSING || DIRECT_ADDRESSING
278	>	RAMSize = RAMSize & -getpagesize();                                     // Round down to page boundary
279	>	#endif
280	>
281	>	// Initialize VM system
282	>	vm_init();
283	>
284	>	#if REAL_ADDRESSING
285	>	// Flag: RAM and ROM are contigously allocated from address 0
286	>	bool memory_mapped_from_zero = false;
287	>
288	>	// Under Solaris/SPARC and NetBSD/m68k, Basilisk II is known to crash
289	>	// when trying to map a too big chunk of memory starting at address 0
290	>	#if defined(OS_solaris) || defined(OS_netbsd)
291	>	const bool can_map_all_memory = false;
292		#else
293	<	RAMBaseHost = new uint8[RAMSize];
294	<	ROMBaseHost = new uint8[0x100000];
293	>	const bool can_map_all_memory = true;
294	>	#endif
295	>
296	>	// Try to allocate all memory from 0x0000, if it is not known to crash
297	>	if (can_map_all_memory && (vm_acquire_fixed(0, RAMSize + 0x100000) == 0)) {
298	>	D(bug("Could allocate RAM and ROM from 0x0000\n"));
299	>	memory_mapped_from_zero = true;
300	>	}
301	>
302	>	// Otherwise, just create the Low Memory area (0x0000..0x2000)
303	>	else if (vm_acquire_fixed(0, 0x2000) == 0) {
304	>	D(bug("Could allocate the Low Memory globals\n"));
305	>	lm_area_mapped = true;
306	>	}
307	>
308	>	// Exit on failure
309	>	else {
310	>	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
311	>	ErrorAlert(str);
312	>	QuitEmulator();
313	>	}
314		#endif
315
316	+	#if USE_SCRATCHMEM_SUBTERFUGE
317	+	// Allocate scratch memory
318	+	ScratchMem = (uint8 *)vm_acquire(SCRATCH_MEM_SIZE);
319	+	if (ScratchMem == VM_MAP_FAILED) {
320	+	ErrorAlert(GetString(STR_NO_MEM_ERR));
321	+	QuitEmulator();
322	+	}
323	+	ScratchMem += SCRATCH_MEM_SIZE/2;       // ScratchMem points to middle of block
324	+	#endif
325	+
326	+	// Create areas for Mac RAM and ROM
327	+	#if REAL_ADDRESSING
328	+	if (memory_mapped_from_zero) {
329	+	RAMBaseHost = (uint8 *)0;
330	+	ROMBaseHost = RAMBaseHost + RAMSize;
331	+	}
332	+	else
333	+	#endif
334	+	{
335	+	RAMBaseHost = (uint8 *)vm_acquire(RAMSize);
336	+	ROMBaseHost = (uint8 *)vm_acquire(0x100000);
337	+	if (RAMBaseHost == VM_MAP_FAILED || ROMBaseHost == VM_MAP_FAILED) {
338	+	ErrorAlert(GetString(STR_NO_MEM_ERR));
339	+	QuitEmulator();
340	+	}
341	+	}
342	+
343	+	#if DIRECT_ADDRESSING
344	+	// RAMBaseMac shall always be zero
345	+	MEMBaseDiff = (uintptr)RAMBaseHost;
346	+	RAMBaseMac = 0;
347	+	ROMBaseMac = Host2MacAddr(ROMBaseHost);
348	+	#endif
349	+	#if REAL_ADDRESSING
350	+	RAMBaseMac = (uint32)RAMBaseHost;
351	+	ROMBaseMac = (uint32)ROMBaseHost;
352	+	#endif
353	+	D(bug("Mac RAM starts at %p (%08x)\n", RAMBaseHost, RAMBaseMac));
354	+	D(bug("Mac ROM starts at %p (%08x)\n", ROMBaseHost, ROMBaseMac));
355	+
356		// Get rom file path from preferences
357		const char *rom_path = PrefsFindString("rom");
358
#	Line 240 | Line 376 | int main(int argc, char **argv)
376		QuitEmulator();
377		}
378
379	+	#if !EMULATED_68K
380	+	// Get CPU model
381	+	int mib[2] = {CTL_HW, HW_MODEL};
382	+	char *model;
383	+	size_t model_len;
384	+	sysctl(mib, 2, NULL, &model_len, NULL, 0);
385	+	model = (char *)malloc(model_len);
386	+	sysctl(mib, 2, model, &model_len, NULL, 0);
387	+	D(bug("Model: %s\n", model));
388	+
389	+	// Set CPU and FPU type
390	+	CPUIs68060 = false;
391	+	if (strstr(model, "020"))
392	+	CPUType = 2;
393	+	else if (strstr(model, "030"))
394	+	CPUType = 3;
395	+	else if (strstr(model, "040"))
396	+	CPUType = 4;
397	+	else if (strstr(model, "060")) {
398	+	CPUType = 4;
399	+	CPUIs68060 = true;
400	+	} else {
401	+	printf("WARNING: Cannot detect CPU type, assuming 68020\n");
402	+	CPUType = 2;
403	+	}
404	+	FPUType = 1;    // NetBSD has an FPU emulation, so the FPU ought to be available at all times
405	+	TwentyFourBitAddressing = false;
406	+	#endif
407	+
408		// Initialize everything
409		if (!InitAll())
410		QuitEmulator();
411	+	D(bug("Initialization complete\n"));
412
413	<	// Start XPRAM watchdog thread
414	<	xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
413	>	#ifdef HAVE_PTHREADS
414	>	// Get handle of main thread
415	>	emul_thread = pthread_self();
416	>	#endif
417	>
418	>	#if !EMULATED_68K
419	>	// (Virtual) supervisor mode, disable interrupts
420	>	EmulatedSR = 0x2700;
421	>
422	>	// Create and install stack for signal handlers
423	>	sig_stack = malloc(SIG_STACK_SIZE);
424	>	D(bug("Signal stack at %p\n", sig_stack));
425	>	if (sig_stack == NULL) {
426	>	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
427	>	QuitEmulator();
428	>	}
429	>	stack_t new_stack;
430	>	new_stack.ss_sp = sig_stack;
431	>	new_stack.ss_flags = 0;
432	>	new_stack.ss_size = SIG_STACK_SIZE;
433	>	if (sigaltstack(&new_stack, NULL) < 0) {
434	>	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
435	>	ErrorAlert(str);
436	>	QuitEmulator();
437	>	}
438	>
439	>	// Install SIGILL handler for emulating privileged instructions and
440	>	// executing A-Trap and EMUL_OP opcodes
441	>	sigemptyset(&sigill_sa.sa_mask);        // Block virtual 68k interrupts during SIGILL handling
442	>	sigaddset(&sigill_sa.sa_mask, SIG_IRQ);
443	>	sigaddset(&sigill_sa.sa_mask, SIGALRM);
444	>	sigill_sa.sa_handler = (void (*)(int))sigill_handler;
445	>	sigill_sa.sa_flags = SA_ONSTACK;
446	>	if (sigaction(SIGILL, &sigill_sa, NULL) < 0) {
447	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno));
448	>	ErrorAlert(str);
449	>	QuitEmulator();
450	>	}
451	>
452	>	// Install virtual 68k interrupt signal handler
453	>	sigemptyset(&sigirq_sa.sa_mask);
454	>	sigaddset(&sigirq_sa.sa_mask, SIGALRM);
455	>	sigirq_sa.sa_handler = (void (*)(int))sigirq_handler;
456	>	sigirq_sa.sa_flags = SA_ONSTACK | SA_RESTART;
457	>	if (sigaction(SIG_IRQ, &sigirq_sa, NULL) < 0) {
458	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_IRQ", strerror(errno));
459	>	ErrorAlert(str);
460	>	QuitEmulator();
461	>	}
462	>	#endif
463	>
464	>	#ifdef ENABLE_MON
465	>	// Setup SIGINT handler to enter mon
466	>	sigemptyset(&sigint_sa.sa_mask);
467	>	sigint_sa.sa_handler = (void (*)(int))sigint_handler;
468	>	sigint_sa.sa_flags = 0;
469	>	sigaction(SIGINT, &sigint_sa, NULL);
470	>	#endif
471
472		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
473	<	// Start 60Hz timer
473	>
474	>	// POSIX.4 timers and real-time signals available, start 60Hz timer
475		sigemptyset(&timer_sa.sa_mask);
476	+	timer_sa.sa_sigaction = (void (*)(int, siginfo_t *, void *))one_tick;
477		timer_sa.sa_flags = SA_SIGINFO | SA_RESTART;
254	–	timer_sa.sa_sigaction = one_tick;
478		if (sigaction(SIG_TIMER, &timer_sa, NULL) < 0) {
479	<	printf("FATAL: cannot set up timer signal handler\n");
479	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_TIMER", strerror(errno));
480	>	ErrorAlert(str);
481		QuitEmulator();
482		}
483		struct sigevent timer_event;
484		timer_event.sigev_notify = SIGEV_SIGNAL;
485		timer_event.sigev_signo = SIG_TIMER;
486		if (timer_create(CLOCK_REALTIME, &timer_event, &timer) < 0) {
487	<	printf("FATAL: cannot create timer\n");
487	>	sprintf(str, GetString(STR_TIMER_CREATE_ERR), strerror(errno));
488	>	ErrorAlert(str);
489		QuitEmulator();
490		}
491		struct itimerspec req;
#	Line 269 | Line 494 | int main(int argc, char **argv)
494		req.it_interval.tv_sec = 0;
495		req.it_interval.tv_nsec = 16625000;
496		if (timer_settime(timer, 0, &req, NULL) < 0) {
497	<	printf("FATAL: cannot start timer\n");
497	>	sprintf(str, GetString(STR_TIMER_SETTIME_ERR), strerror(errno));
498	>	ErrorAlert(str);
499		QuitEmulator();
500		}
501	+	D(bug("60Hz timer started\n"));
502
503	<	#else
503	>	#elif defined(HAVE_PTHREADS)
504
505	<	// Start 60Hz thread
505	>	// POSIX threads available, start 60Hz thread
506		pthread_attr_init(&tick_thread_attr);
507		#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
508		if (geteuid() == 0) {
#	Line 288 | Line 515 | int main(int argc, char **argv)
515		#endif
516		tick_thread_active = (pthread_create(&tick_thread, &tick_thread_attr, tick_func, NULL) == 0);
517		if (!tick_thread_active) {
518	<	printf("FATAL: cannot create tick thread\n");
518	>	sprintf(str, GetString(STR_TICK_THREAD_ERR), strerror(errno));
519	>	ErrorAlert(str);
520	>	QuitEmulator();
521	>	}
522	>	D(bug("60Hz thread started\n"));
523	>
524	>	#else
525	>
526	>	// Start 60Hz timer
527	>	sigemptyset(&timer_sa.sa_mask);         // Block virtual 68k interrupts during SIGARLM handling
528	>	sigaddset(&timer_sa.sa_mask, SIG_IRQ);
529	>	timer_sa.sa_handler = one_tick;
530	>	timer_sa.sa_flags = SA_ONSTACK | SA_RESTART;
531	>	if (sigaction(SIGALRM, &timer_sa, NULL) < 0) {
532	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGALRM", strerror(errno));
533	>	ErrorAlert(str);
534		QuitEmulator();
535		}
536	+	struct itimerval req;
537	+	req.it_interval.tv_sec = req.it_value.tv_sec = 0;
538	+	req.it_interval.tv_usec = req.it_value.tv_usec = 16625;
539	+	setitimer(ITIMER_REAL, &req, NULL);
540	+
541		#endif
542
543	<	#if ENABLE_MON
544	<	// Setup SIGINT handler to enter mon
545	<	sigemptyset(&sigint_sa.sa_mask);
546	<	sigint_sa.sa_flags = 0;
547	<	sigint_sa.sa_handler = sigint_handler;
301	<	sigaction(SIGINT, &sigint_sa, NULL);
543	>	#ifdef HAVE_PTHREADS
544	>	// Start XPRAM watchdog thread
545	>	memcpy(last_xpram, XPRAM, 256);
546	>	xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
547	>	D(bug("XPRAM thread started\n"));
548		#endif
549
550		// Start 68k and jump to ROM boot routine
551	+	D(bug("Starting emulation...\n"));
552		Start680x0();
553
554		QuitEmulator();
#	Line 315 | Line 562 | int main(int argc, char **argv)
562
563		void QuitEmulator(void)
564		{
565	+	D(bug("QuitEmulator\n"));
566	+
567	+	#if EMULATED_68K
568		// Exit 680x0 emulation
569		Exit680x0();
570	+	#endif
571
572		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
573		// Stop 60Hz timer
574		timer_delete(timer);
575	<	#else
575	>	#elif defined(HAVE_PTHREADS)
576		// Stop 60Hz thread
577		if (tick_thread_active) {
578		tick_thread_cancel = true;
#	Line 330 | Line 581 | void QuitEmulator(void)
581		#endif
582		pthread_join(tick_thread, NULL);
583		}
584	+	#else
585	+	struct itimerval req;
586	+	req.it_interval.tv_sec = req.it_value.tv_sec = 0;
587	+	req.it_interval.tv_usec = req.it_value.tv_usec = 0;
588	+	setitimer(ITIMER_REAL, &req, NULL);
589		#endif
590
591	+	#ifdef HAVE_PTHREADS
592		// Stop XPRAM watchdog thread
593		if (xpram_thread_active) {
594		xpram_thread_cancel = true;
#	Line 340 | Line 597 | void QuitEmulator(void)
597		#endif
598		pthread_join(xpram_thread, NULL);
599		}
600	+	#endif
601
602		// Deinitialize everything
603		ExitAll();
604
605	<	// Delete ROM area
606	<	delete[] ROMBaseHost;
605	>	// Free ROM/RAM areas
606	>	if (RAMBaseHost != VM_MAP_FAILED) {
607	>	vm_release(RAMBaseHost, RAMSize);
608	>	RAMBaseHost = NULL;
609	>	}
610	>	if (ROMBaseHost != VM_MAP_FAILED) {
611	>	vm_release(ROMBaseHost, 0x100000);
612	>	ROMBaseHost = NULL;
613	>	}
614
615	<	// Delete RAM area
616	<	delete[] RAMBaseHost;
615	>	#if USE_SCRATCHMEM_SUBTERFUGE
616	>	// Delete scratch memory area
617	>	if (ScratchMem != (uint8 *)VM_MAP_FAILED) {
618	>	vm_release((void *)(ScratchMem - SCRATCH_MEM_SIZE/2), SCRATCH_MEM_SIZE);
619	>	ScratchMem = NULL;
620	>	}
621	>	#endif
622	>
623	>	#if REAL_ADDRESSING
624	>	// Delete Low Memory area
625	>	if (lm_area_mapped)
626	>	vm_release(0, 0x2000);
627	>	#endif
628	>
629	>	// Exit VM wrappers
630	>	vm_exit();
631
632		// Exit system routines
633		SysExit();
#	Line 369 | Line 648 | void QuitEmulator(void)
648		*  or a dynamically recompiling emulator)
649		*/
650
372	–	#if EMULATED_68K
651		void FlushCodeCache(void *start, uint32 size)
652		{
653	<	}
653	>	#if !EMULATED_68K && defined(__NetBSD__)
654	>	m68k_sync_icache(start, size);
655		#endif
656	+	}
657
658
659		/*
660		*  SIGINT handler, enters mon
661		*/
662
663	<	#if ENABLE_MON
384	<	extern void m68k_dumpstate(uaecptr *nextpc);
663	>	#ifdef ENABLE_MON
664		static void sigint_handler(...)
665		{
666	+	#if EMULATED_68K
667		uaecptr nextpc;
668	+	extern void m68k_dumpstate(uaecptr *nextpc);
669		m68k_dumpstate(&nextpc);
670	<	char *arg[2] = {"rmon", NULL};
671	<	mon(1, arg);
670	>	#else
671	>	char *arg[4] = {"mon", "-m", "-r", NULL};
672	>	mon(3, arg);
673		QuitEmulator();
674	+	#endif
675		}
676		#endif
677
#	Line 399 | Line 682 | static void sigint_handler(...)
682
683		uint32 InterruptFlags = 0;
684
685	+	#if EMULATED_68K
686		void SetInterruptFlag(uint32 flag)
687		{
688	+	#ifdef HAVE_PTHREADS
689		pthread_mutex_lock(&intflag_lock);
690		InterruptFlags |= flag;
691		pthread_mutex_unlock(&intflag_lock);
692	+	#else
693	+	InterruptFlags |= flag;         // Pray that this is an atomic operation...
694	+	#endif
695		}
696
697		void ClearInterruptFlag(uint32 flag)
698		{
699	+	#ifdef HAVE_PTHREADS
700		pthread_mutex_lock(&intflag_lock);
701		InterruptFlags &= ~flag;
702		pthread_mutex_unlock(&intflag_lock);
703	+	#else
704	+	InterruptFlags &= ~flag;
705	+	#endif
706	+	}
707	+	#endif
708	+
709	+	#if !EMULATED_68K
710	+	void TriggerInterrupt(void)
711	+	{
712	+	#if defined(HAVE_PTHREADS)
713	+	pthread_kill(emul_thread, SIG_IRQ);
714	+	#else
715	+	raise(SIG_IRQ);
716	+	#endif
717	+	}
718	+
719	+	void TriggerNMI(void)
720	+	{
721	+	// not yet supported
722		}
723	+	#endif
724	+
725	+
726	+	/*
727	+	*  XPRAM watchdog thread (saves XPRAM every minute)
728	+	*/
729	+
730	+	static void xpram_watchdog(void)
731	+	{
732	+	if (memcmp(last_xpram, XPRAM, 256)) {
733	+	memcpy(last_xpram, XPRAM, 256);
734	+	SaveXPRAM();
735	+	}
736	+	}
737	+
738	+	#ifdef HAVE_PTHREADS
739	+	static void *xpram_func(void *arg)
740	+	{
741	+	while (!xpram_thread_cancel) {
742	+	for (int i=0; i<60 && !xpram_thread_cancel; i++)
743	+	Delay_usec(999999);             // Only wait 1 second so we quit promptly when xpram_thread_cancel becomes true
744	+	xpram_watchdog();
745	+	}
746	+	return NULL;
747	+	}
748	+	#endif
749
750
751		/*
752		*  60Hz thread (really 60.15Hz)
753		*/
754
755	+	static void one_second(void)
756	+	{
757	+	// Pseudo Mac 1Hz interrupt, update local time
758	+	WriteMacInt32(0x20c, TimerDateTime());
759	+
760	+	SetInterruptFlag(INTFLAG_1HZ);
761	+	TriggerInterrupt();
762	+
763	+	#ifndef HAVE_PTHREADS
764	+	static int second_counter = 0;
765	+	if (++second_counter > 60) {
766	+	second_counter = 0;
767	+	xpram_watchdog();
768	+	}
769	+	#endif
770	+	}
771	+
772		static void one_tick(...)
773		{
774		static int tick_counter = 0;
424	–
425	–	// Pseudo Mac 1Hz interrupt, update local time
775		if (++tick_counter > 60) {
776		tick_counter = 0;
777	<	WriteMacInt32(0x20c, TimerDateTime());
777	>	one_second();
778		}
779
780	+	#ifndef HAVE_PTHREADS
781	+	// No threads available, perform video refresh from here
782	+	VideoRefresh();
783	+	#endif
784	+
785		// Trigger 60Hz interrupt
786		if (ROMVersion != ROM_VERSION_CLASSIC || HasMacStarted()) {
787		SetInterruptFlag(INTFLAG_60HZ);
#	Line 435 | Line 789 | static void one_tick(...)
789		}
790		}
791
792	+	#ifdef HAVE_PTHREADS
793		static void *tick_func(void *arg)
794		{
795	+	uint64 next = GetTicks_usec();
796		while (!tick_thread_cancel) {
441	–
442	–	// Wait
443	–	#ifdef HAVE_NANOSLEEP
444	–	struct timespec req = {0, 16625000};
445	–	nanosleep(&req, NULL);
446	–	#else
447	–	usleep(16625);
448	–	#endif
449	–
450	–	// Action
797		one_tick();
798	+	next += 16625;
799	+	int64 delay = next - GetTicks_usec();
800	+	if (delay > 0)
801	+	Delay_usec(delay);
802	+	else if (delay < -16625)
803	+	next = GetTicks_usec();
804		}
805		return NULL;
806		}
807	+	#endif
808
809
810		/*
811	<	*  XPRAM watchdog thread (saves XPRAM every minute)
811	>	*  Get current value of microsecond timer
812		*/
813
814	<	void *xpram_func(void *arg)
814	>	uint64 GetTicks_usec(void)
815		{
816	<	uint8 last_xpram[256];
817	<	memcpy(last_xpram, XPRAM, 256);
816	>	#ifdef HAVE_CLOCK_GETTIME
817	>	struct timespec t;
818	>	clock_gettime(CLOCK_REALTIME, &t);
819	>	return (uint64)t.tv_sec * 1000000 + t.tv_nsec / 1000;
820	>	#else
821	>	struct timeval t;
822	>	gettimeofday(&t, NULL);
823	>	return (uint64)t.tv_sec * 1000000 + t.tv_usec;
824	>	#endif
825	>	}
826
827	<	while (!xpram_thread_cancel) {
828	<	for (int i=0; i<60 && !xpram_thread_cancel; i++) {
829	<	#ifdef HAVE_NANOSLEEP
830	<	struct timespec req = {1, 0};
831	<	nanosleep(&req, NULL);
827	>
828	>	/*
829	>	*  Delay by specified number of microseconds (<1 second)
830	>	*  (adapted from SDL_Delay() source; this function is designed to provide
831	>	*  the highest accuracy possible)
832	>	*/
833	>
834	>	#if defined(linux)
835	>	// Linux select() changes its timeout parameter upon return to contain
836	>	// the remaining time. Most other unixen leave it unchanged or undefined.
837	>	#define SELECT_SETS_REMAINING
838	>	#elif defined(__FreeBSD__) || defined(__sun__)
839	>	#define USE_NANOSLEEP
840	>	#elif defined(HAVE_PTHREADS) && defined(sgi)
841	>	// SGI pthreads has a bug when using pthreads+signals+nanosleep,
842	>	// so instead of using nanosleep, wait on a CV which is never signalled.
843	>	#define USE_COND_TIMEDWAIT
844	>	#endif
845	>
846	>	void Delay_usec(uint32 usec)
847	>	{
848	>	int was_error;
849	>
850	>	#if defined(USE_NANOSLEEP)
851	>	struct timespec elapsed, tv;
852	>	#elif defined(USE_COND_TIMEDWAIT)
853	>	// Use a local mutex and cv, so threads remain independent
854	>	pthread_cond_t delay_cond = PTHREAD_COND_INITIALIZER;
855	>	pthread_mutex_t delay_mutex = PTHREAD_MUTEX_INITIALIZER;
856	>	struct timespec elapsed;
857	>	uint64 future;
858		#else
859	<	usleep(1000000);
859	>	struct timeval tv;
860	>	#ifndef SELECT_SETS_REMAINING
861	>	uint64 then, now, elapsed;
862		#endif
863	+	#endif
864	+
865	+	// Set the timeout interval - Linux only needs to do this once
866	+	#if defined(SELECT_SETS_REMAINING)
867	+	tv.tv_sec = 0;
868	+	tv.tv_usec = usec;
869	+	#elif defined(USE_NANOSLEEP)
870	+	elapsed.tv_sec = 0;
871	+	elapsed.tv_nsec = usec * 1000;
872	+	#elif defined(USE_COND_TIMEDWAIT)
873	+	future = GetTicks_usec() + usec;
874	+	elapsed.tv_sec = future / 1000000;
875	+	elapsed.tv_nsec = (future % 1000000) * 1000;
876	+	#else
877	+	then = GetTicks_usec();
878	+	#endif
879	+
880	+	do {
881	+	errno = 0;
882	+	#if defined(USE_NANOSLEEP)
883	+	tv.tv_sec = elapsed.tv_sec;
884	+	tv.tv_nsec = elapsed.tv_nsec;
885	+	was_error = nanosleep(&tv, &elapsed);
886	+	#elif defined(USE_COND_TIMEDWAIT)
887	+	was_error = pthread_mutex_lock(&delay_mutex);
888	+	was_error = pthread_cond_timedwait(&delay_cond, &delay_mutex, &elapsed);
889	+	was_error = pthread_mutex_unlock(&delay_mutex);
890	+	#else
891	+	#ifndef SELECT_SETS_REMAINING
892	+	// Calculate the time interval left (in case of interrupt)
893	+	now = GetTicks_usec();
894	+	elapsed = now - then;
895	+	then = now;
896	+	if (elapsed >= usec)
897	+	break;
898	+	usec -= elapsed;
899	+	tv.tv_sec = 0;
900	+	tv.tv_usec = usec;
901	+	#endif
902	+	was_error = select(0, NULL, NULL, NULL, &tv);
903	+	#endif
904	+	} while (was_error && (errno == EINTR));
905	+	}
906	+
907	+
908	+	#if !EMULATED_68K
909	+	/*
910	+	*  Virtual 68k interrupt handler
911	+	*/
912	+
913	+	static void sigirq_handler(int sig, int code, struct sigcontext *scp)
914	+	{
915	+	// Interrupts disabled? Then do nothing
916	+	if (EmulatedSR & 0x0700)
917	+	return;
918	+
919	+	struct sigstate *state = (struct sigstate *)scp->sc_ap;
920	+	M68kRegisters *regs = (M68kRegisters *)&state->ss_frame;
921	+
922	+	// Set up interrupt frame on stack
923	+	uint32 a7 = regs->a[7];
924	+	a7 -= 2;
925	+	WriteMacInt16(a7, 0x64);
926	+	a7 -= 4;
927	+	WriteMacInt32(a7, scp->sc_pc);
928	+	a7 -= 2;
929	+	WriteMacInt16(a7, scp->sc_ps | EmulatedSR);
930	+	scp->sc_sp = regs->a[7] = a7;
931	+
932	+	// Set interrupt level
933	+	EmulatedSR |= 0x2100;
934	+
935	+	// Jump to MacOS interrupt handler on return
936	+	scp->sc_pc = ReadMacInt32(0x64);
937	+	}
938	+
939	+
940	+	/*
941	+	*  SIGILL handler, for emulation of privileged instructions and executing
942	+	*  A-Trap and EMUL_OP opcodes
943	+	*/
944	+
945	+	static void sigill_handler(int sig, int code, struct sigcontext *scp)
946	+	{
947	+	struct sigstate *state = (struct sigstate *)scp->sc_ap;
948	+	uint16 *pc = (uint16 *)scp->sc_pc;
949	+	uint16 opcode = *pc;
950	+	M68kRegisters *regs = (M68kRegisters *)&state->ss_frame;
951	+
952	+	#define INC_PC(n) scp->sc_pc += (n)
953	+
954	+	#define GET_SR (scp->sc_ps | EmulatedSR)
955	+
956	+	#define STORE_SR(v) \
957	+	scp->sc_ps = (v) & 0xff; \
958	+	EmulatedSR = (v) & 0xe700; \
959	+	if (((v) & 0x0700) == 0 && InterruptFlags) \
960	+	TriggerInterrupt();
961	+
962	+	//printf("opcode %04x at %p, sr %04x, emul_sr %04x\n", opcode, pc, scp->sc_ps, EmulatedSR);
963	+
964	+	if ((opcode & 0xf000) == 0xa000) {
965	+
966	+	// A-Line instruction, set up A-Line trap frame on stack
967	+	uint32 a7 = regs->a[7];
968	+	a7 -= 2;
969	+	WriteMacInt16(a7, 0x28);
970	+	a7 -= 4;
971	+	WriteMacInt32(a7, (uint32)pc);
972	+	a7 -= 2;
973	+	WriteMacInt16(a7, GET_SR);
974	+	scp->sc_sp = regs->a[7] = a7;
975	+
976	+	// Jump to MacOS A-Line handler on return
977	+	scp->sc_pc = ReadMacInt32(0x28);
978	+
979	+	} else if ((opcode & 0xff00) == 0x7100) {
980	+
981	+	// Extended opcode, push registers on user stack
982	+	uint32 a7 = regs->a[7];
983	+	a7 -= 4;
984	+	WriteMacInt32(a7, (uint32)pc);
985	+	a7 -= 2;
986	+	WriteMacInt16(a7, scp->sc_ps);
987	+	for (int i=7; i>=0; i--) {
988	+	a7 -= 4;
989	+	WriteMacInt32(a7, regs->a[i]);
990	+	}
991	+	for (int i=7; i>=0; i--) {
992	+	a7 -= 4;
993	+	WriteMacInt32(a7, regs->d[i]);
994	+	}
995	+	scp->sc_sp = regs->a[7] = a7;
996	+
997	+	// Jump to EmulOp trampoline code on return
998	+	scp->sc_pc = (uint32)EmulOpTrampoline;
999	+
1000	+	} else switch (opcode) {        // Emulate privileged instructions
1001	+
1002	+	case 0x40e7:    // move sr,-(sp)
1003	+	regs->a[7] -= 2;
1004	+	WriteMacInt16(regs->a[7], GET_SR);
1005	+	scp->sc_sp = regs->a[7];
1006	+	INC_PC(2);
1007	+	break;
1008	+
1009	+	case 0x46df: {  // move (sp)+,sr
1010	+	uint16 sr = ReadMacInt16(regs->a[7]);
1011	+	STORE_SR(sr);
1012	+	regs->a[7] += 2;
1013	+	scp->sc_sp = regs->a[7];
1014	+	INC_PC(2);
1015	+	break;
1016		}
1017	<	if (memcmp(last_xpram, XPRAM, 256)) {
1018	<	memcpy(last_xpram, XPRAM, 256);
1019	<	SaveXPRAM();
1017	>
1018	>	case 0x007c: {  // ori #xxxx,sr
1019	>	uint16 sr = GET_SR | pc[1];
1020	>	scp->sc_ps = sr & 0xff;         // oring bits into the sr can't enable interrupts, so we don't need to call STORE_SR
1021	>	EmulatedSR = sr & 0xe700;
1022	>	INC_PC(4);
1023	>	break;
1024	>	}
1025	>
1026	>	case 0x027c: {  // andi #xxxx,sr
1027	>	uint16 sr = GET_SR & pc[1];
1028	>	STORE_SR(sr);
1029	>	INC_PC(4);
1030	>	break;
1031	>	}
1032	>
1033	>	case 0x46fc:    // move #xxxx,sr
1034	>	STORE_SR(pc[1]);
1035	>	INC_PC(4);
1036	>	break;
1037	>
1038	>	case 0x46ef: {  // move (xxxx,sp),sr
1039	>	uint16 sr = ReadMacInt16(regs->a[7] + (int32)(int16)pc[1]);
1040	>	STORE_SR(sr);
1041	>	INC_PC(4);
1042	>	break;
1043	>	}
1044	>
1045	>	case 0x46d8:    // move (a0)+,sr
1046	>	case 0x46d9: {  // move (a1)+,sr
1047	>	uint16 sr = ReadMacInt16(regs->a[opcode & 7]);
1048	>	STORE_SR(sr);
1049	>	regs->a[opcode & 7] += 2;
1050	>	INC_PC(2);
1051	>	break;
1052	>	}
1053	>
1054	>	case 0x40f8:    // move sr,xxxx.w
1055	>	WriteMacInt16(pc[1], GET_SR);
1056	>	INC_PC(4);
1057	>	break;
1058	>
1059	>	case 0x40d0:    // move sr,(a0)
1060	>	case 0x40d1:    // move sr,(a1)
1061	>	case 0x40d2:    // move sr,(a2)
1062	>	case 0x40d3:    // move sr,(a3)
1063	>	case 0x40d4:    // move sr,(a4)
1064	>	case 0x40d5:    // move sr,(a5)
1065	>	case 0x40d6:    // move sr,(a6)
1066	>	case 0x40d7:    // move sr,(sp)
1067	>	WriteMacInt16(regs->a[opcode & 7], GET_SR);
1068	>	INC_PC(2);
1069	>	break;
1070	>
1071	>	case 0x40c0:    // move sr,d0
1072	>	case 0x40c1:    // move sr,d1
1073	>	case 0x40c2:    // move sr,d2
1074	>	case 0x40c3:    // move sr,d3
1075	>	case 0x40c4:    // move sr,d4
1076	>	case 0x40c5:    // move sr,d5
1077	>	case 0x40c6:    // move sr,d6
1078	>	case 0x40c7:    // move sr,d7
1079	>	regs->d[opcode & 7] = GET_SR;
1080	>	INC_PC(2);
1081	>	break;
1082	>
1083	>	case 0x46c0:    // move d0,sr
1084	>	case 0x46c1:    // move d1,sr
1085	>	case 0x46c2:    // move d2,sr
1086	>	case 0x46c3:    // move d3,sr
1087	>	case 0x46c4:    // move d4,sr
1088	>	case 0x46c5:    // move d5,sr
1089	>	case 0x46c6:    // move d6,sr
1090	>	case 0x46c7: {  // move d7,sr
1091	>	uint16 sr = regs->d[opcode & 7];
1092	>	STORE_SR(sr);
1093	>	INC_PC(2);
1094	>	break;
1095	>	}
1096	>
1097	>	case 0xf327:    // fsave -(sp)
1098	>	if (CPUIs68060) {
1099	>	regs->a[7] -= 4;
1100	>	WriteMacInt32(regs->a[7], 0x60000000);  // Idle frame
1101	>	regs->a[7] -= 4;
1102	>	WriteMacInt32(regs->a[7], 0);
1103	>	regs->a[7] -= 4;
1104	>	WriteMacInt32(regs->a[7], 0);
1105	>	} else {
1106	>	regs->a[7] -= 4;
1107	>	WriteMacInt32(regs->a[7], 0x41000000);  // Idle frame
1108	>	}
1109	>	scp->sc_sp = regs->a[7];
1110	>	INC_PC(2);
1111	>	break;
1112	>
1113	>	case 0xf35f:    // frestore (sp)+
1114	>	if (CPUIs68060)
1115	>	regs->a[7] += 12;
1116	>	else
1117	>	regs->a[7] += 4;
1118	>	scp->sc_sp = regs->a[7];
1119	>	INC_PC(2);
1120	>	break;
1121	>
1122	>	case 0x4e73: {  // rte
1123	>	uint32 a7 = regs->a[7];
1124	>	uint16 sr = ReadMacInt16(a7);
1125	>	a7 += 2;
1126	>	scp->sc_ps = sr & 0xff;
1127	>	EmulatedSR = sr & 0xe700;
1128	>	scp->sc_pc = ReadMacInt32(a7);
1129	>	a7 += 4;
1130	>	uint16 format = ReadMacInt16(a7) >> 12;
1131	>	a7 += 2;
1132	>	static const int frame_adj[16] = {
1133	>	0, 0, 4, 4, 8, 0, 0, 52, 50, 12, 24, 84, 16, 0, 0, 0
1134	>	};
1135	>	scp->sc_sp = regs->a[7] = a7 + frame_adj[format];
1136	>	break;
1137		}
1138	+
1139	+	case 0x4e7a:    // movec cr,x
1140	+	switch (pc[1]) {
1141	+	case 0x0002:    // movec cacr,d0
1142	+	regs->d[0] = 0x3111;
1143	+	break;
1144	+	case 0x1002:    // movec cacr,d1
1145	+	regs->d[1] = 0x3111;
1146	+	break;
1147	+	case 0x0003:    // movec tc,d0
1148	+	case 0x0004:    // movec itt0,d0
1149	+	case 0x0005:    // movec itt1,d0
1150	+	case 0x0006:    // movec dtt0,d0
1151	+	case 0x0007:    // movec dtt1,d0
1152	+	case 0x0806:    // movec urp,d0
1153	+	case 0x0807:    // movec srp,d0
1154	+	regs->d[0] = 0;
1155	+	break;
1156	+	case 0x1000:    // movec sfc,d1
1157	+	case 0x1001:    // movec dfc,d1
1158	+	case 0x1003:    // movec tc,d1
1159	+	case 0x1801:    // movec vbr,d1
1160	+	regs->d[1] = 0;
1161	+	break;
1162	+	case 0x8801:    // movec vbr,a0
1163	+	regs->a[0] = 0;
1164	+	break;
1165	+	case 0x9801:    // movec vbr,a1
1166	+	regs->a[1] = 0;
1167	+	break;
1168	+	default:
1169	+	goto ill;
1170	+	}
1171	+	INC_PC(4);
1172	+	break;
1173	+
1174	+	case 0x4e7b:    // movec x,cr
1175	+	switch (pc[1]) {
1176	+	case 0x1000:    // movec d1,sfc
1177	+	case 0x1001:    // movec d1,dfc
1178	+	case 0x0801:    // movec d0,vbr
1179	+	case 0x1801:    // movec d1,vbr
1180	+	break;
1181	+	case 0x0002:    // movec d0,cacr
1182	+	case 0x1002:    // movec d1,cacr
1183	+	FlushCodeCache(NULL, 0);
1184	+	break;
1185	+	default:
1186	+	goto ill;
1187	+	}
1188	+	INC_PC(4);
1189	+	break;
1190	+
1191	+	case 0xf478:    // cpusha dc
1192	+	case 0xf4f8:    // cpusha dc/ic
1193	+	FlushCodeCache(NULL, 0);
1194	+	INC_PC(2);
1195	+	break;
1196	+
1197	+	default:
1198	+	ill:            printf("SIGILL num %d, code %d\n", sig, code);
1199	+	printf(" context %p:\n", scp);
1200	+	printf("  onstack %08x\n", scp->sc_onstack);
1201	+	printf("  sp %08x\n", scp->sc_sp);
1202	+	printf("  fp %08x\n", scp->sc_fp);
1203	+	printf("  pc %08x\n", scp->sc_pc);
1204	+	printf("   opcode %04x\n", opcode);
1205	+	printf("  sr %08x\n", scp->sc_ps);
1206	+	printf(" state %p:\n", state);
1207	+	printf("  flags %d\n", state->ss_flags);
1208	+	for (int i=0; i<8; i++)
1209	+	printf("  d%d %08x\n", i, state->ss_frame.f_regs[i]);
1210	+	for (int i=0; i<8; i++)
1211	+	printf("  a%d %08x\n", i, state->ss_frame.f_regs[i+8]);
1212	+
1213	+	#ifdef ENABLE_MON
1214	+	char *arg[4] = {"mon", "-m", "-r", NULL};
1215	+	mon(3, arg);
1216	+	#endif
1217	+	QuitEmulator();
1218	+	break;
1219		}
480	–	return NULL;
1220		}
1221	+	#endif
1222
1223
1224		/*
1225		*  Display alert
1226		*/
1227
1228	<	#if ENABLE_GTK
1228	>	#ifdef ENABLE_GTK
1229		static void dl_destroyed(void)
1230		{
1231		gtk_main_quit();
#	Line 530 | Line 1270 | void display_alert(int title_id, int pre
1270
1271		void ErrorAlert(const char *text)
1272		{
1273	<	#if ENABLE_GTK
1273	>	#ifdef ENABLE_GTK
1274		if (PrefsFindBool("nogui") || x_display == NULL) {
1275		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
1276		return;
#	Line 549 | Line 1289 | void ErrorAlert(const char *text)
1289
1290		void WarningAlert(const char *text)
1291		{
1292	<	#if ENABLE_GTK
1292	>	#ifdef ENABLE_GTK
1293		if (PrefsFindBool("nogui") || x_display == NULL) {
1294		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
1295		return;

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