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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 1.31 by cebix, 2001-03-28T16:53:39Z

#	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"
#	Line 38 | Line 72
72		#include "version.h"
73		#include "main.h"
74
75	+	#ifdef ENABLE_MON
76	+	# include "mon.h"
77	+	#endif
78	+
79		#define DEBUG 0
80		#include "debug.h"
81
82
83	<	#include <X11/Xlib.h>
84	<
85	<	#if ENABLE_GTK
86	<	#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
83	>	// Constants
84	>	const char ROM_FILE_NAME[] = "ROM";
85	>	const int SIG_STACK_SIZE = SIGSTKSZ;    // Size of signal stack
86	>	const int SCRATCH_MEM_SIZE = 0x10000;   // Size of scratch memory area
87
57	–	#if ENABLE_MON
58	–	#include "mon.h"
59	–	#endif
88
89	<	#ifdef USE_MAPPED_MEMORY
90	<	#include <sys/mman.h>
91	<	extern char *address_space, *good_address_map;
89	>	#if !EMULATED_68K
90	>	// RAM and ROM pointers
91	>	uint32 RAMBaseMac;              // RAM base (Mac address space)
92	>	uint8 *RAMBaseHost;             // RAM base (host address space)
93	>	uint32 RAMSize;                 // Size of RAM
94	>	uint32 ROMBaseMac;              // ROM base (Mac address space)
95	>	uint8 *ROMBaseHost;             // ROM base (host address space)
96	>	uint32 ROMSize;                 // Size of ROM
97		#endif
98
99
67	–	// Constants
68	–	const char ROM_FILE_NAME[] = "ROM";
69	–
70	–
100		// CPU and FPU type, addressing mode
101		int CPUType;
102		bool CPUIs68060;
#	Line 76 | Line 105 | bool TwentyFourBitAddressing;
105
106
107		// Global variables
108	<	static char *x_display_name = NULL;                                     // X11 display name
108	>	char *x_display_name = NULL;                                            // X11 display name
109		Display *x_display = NULL;                                                      // X11 display handle
110
111	+	static int zero_fd = -1;                                                        // FD of /dev/zero
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	+	static bool memory_mapped_from_zero = false; // Flag: Could allocate RAM area from 0
158	+	#endif
159	+
160	+	#if REAL_ADDRESSING || DIRECT_ADDRESSING
161	+	static uint32 mapped_ram_rom_size;              // Total size of mmap()ed RAM/ROM area
162	+	#endif
163	+
164
165		// Prototypes
166		static void *xpram_func(void *arg);
167		static void *tick_func(void *arg);
168		static void one_tick(...);
169	+	#if !EMULATED_68K
170	+	static void sigirq_handler(int sig, int code, struct sigcontext *scp);
171	+	static void sigill_handler(int sig, int code, struct sigcontext *scp);
172	+	extern "C" void EmulOpTrampoline(void);
173	+	#endif
174
175
176		/*
#	Line 132 | Line 197 | char *strdup(const char *s)
197
198		int main(int argc, char **argv)
199		{
200	+	char str[256];
201	+
202		// Initialize variables
203		RAMBaseHost = NULL;
204		ROMBaseHost = NULL;
#	Line 142 | Line 209 | int main(int argc, char **argv)
209		printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR);
210		printf(" %s\n", GetString(STR_ABOUT_TEXT2));
211
212	<	// Parse arguments
212	>	#ifdef ENABLE_GTK
213	>	// Init GTK
214	>	gtk_set_locale();
215	>	gtk_init(&argc, &argv);
216	>	x_display_name = gdk_get_display(); // gtk_init() handles and removes the "--display" argument
217	>	#endif
218	>
219	>	// Parse and remove arguments
220		for (int i=1; i<argc; i++) {
221	<	if (strcmp(argv[i], "-display") == 0 && ++i < argc)
222	<	x_display_name = argv[i];
223	<	else if (strcmp(argv[i], "-break") == 0 && ++i < argc)
224	<	ROMBreakpoint = strtol(argv[i], NULL, 0);
225	<	else if (strcmp(argv[i], "-rominfo") == 0)
221	>	if (strcmp(argv[i], "--display") == 0) {
222	>	argv[i] = NULL;
223	>	if ((i + 1) < argc && argv[i + 1]) {
224	>	argv[i++] = NULL;
225	>	x_display_name = strdup(argv[i]);
226	>	}
227	>	} else if (strcmp(argv[i], "--break") == 0) {
228	>	argv[i] = NULL;
229	>	if ((i + 1) < argc && argv[i + 1]) {
230	>	argv[i++] = NULL;
231	>	ROMBreakpoint = strtol(argv[i], NULL, 0);
232	>	}
233	>	} else if (strcmp(argv[i], "--rominfo") == 0) {
234	>	argv[i] = NULL;
235		PrintROMInfo = true;
236	+	}
237	+	}
238	+	for (int i=1; i<argc; i++) {
239	+	int k;
240	+	for (k=i; k<argc; k++)
241	+	if (argv[k] != NULL)
242	+	break;
243	+	if (k > i) {
244	+	k -= i;
245	+	for (int j=i+k; j<argc; j++)
246	+	argv[j-k] = argv[j];
247	+	argc -= k;
248	+	}
249		}
250
251		// Open display
#	Line 161 | Line 257 | int main(int argc, char **argv)
257		QuitEmulator();
258		}
259
260	<	#if ENABLE_XF86_DGA && !ENABLE_MON
260	>	#if defined(ENABLE_XF86_DGA) && !defined(ENABLE_MON)
261		// Fork out, so we can return from fullscreen mode when things get ugly
262		XF86DGAForkApp(DefaultScreen(x_display));
263		#endif
264
169	–	#if ENABLE_GTK
170	–	// Init GTK
171	–	gtk_set_locale();
172	–	gtk_init(&argc, &argv);
173	–	#endif
174	–
265		// Read preferences
266	<	PrefsInit();
266	>	PrefsInit(argc, argv);
267
268		// Init system routines
269		SysInit();
#	Line 183 | Line 273 | int main(int argc, char **argv)
273		if (!PrefsEditor())
274		QuitEmulator();
275
276	+	// Open /dev/zero
277	+	zero_fd = open("/dev/zero", O_RDWR);
278	+	if (zero_fd < 0) {
279	+	sprintf(str, GetString(STR_NO_DEV_ZERO_ERR), strerror(errno));
280	+	ErrorAlert(str);
281	+	QuitEmulator();
282	+	}
283	+
284		// Read RAM size
285		RAMSize = PrefsFindInt32("ramsize") & 0xfff00000;       // Round down to 1MB boundary
286		if (RAMSize < 1024*1024) {
#	Line 190 | Line 288 | int main(int argc, char **argv)
288		RAMSize = 1024*1024;
289		}
290
291	<	// Create areas for Mac RAM and ROM
292	<	#ifdef USE_MAPPED_MEMORY
293	<	int fd = open("/dev/zero", O_RDWR);
294	<	good_address_map = (char *)mmap(NULL, 1<<24, PROT_READ, MAP_PRIVATE, fd, 0);
295	<	address_space = (char *)mmap(NULL, 1<<24, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
296	<	if ((int)address_space < 0 || (int)good_address_map < 0) {
297	<	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
291	>	#if REAL_ADDRESSING || DIRECT_ADDRESSING
292	>	const uint32 page_size = getpagesize();
293	>	const uint32 page_mask = page_size - 1;
294	>	const uint32 aligned_ram_size = (RAMSize + page_mask) & ~page_mask;
295	>	mapped_ram_rom_size = aligned_ram_size + 0x100000;
296	>	#endif
297	>
298	>	#if REAL_ADDRESSING
299	>	// Try to allocate the complete address space from zero
300	>	// gb-- the Solaris manpage about mmap(2) states that using MAP_FIXED
301	>	// implies undefined behaviour for further use of sbrk(), malloc(), etc.
302	>	// cebix-- on NetBSD/m68k, this causes a segfault
303	>	#if defined(OS_solaris) || defined(OS_netbsd)
304	>	// Anyway, it doesn't work...
305	>	if (0) {
306	>	#else
307	>	if (mmap((caddr_t)0x0000, mapped_ram_rom_size, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) != MAP_FAILED) {
308	>	#endif
309	>	D(bug("Could allocate RAM and ROM from 0x0000\n"));
310	>	memory_mapped_from_zero = true;
311	>	}
312	>	// Create Low Memory area (0x0000..0x2000)
313	>	else if (mmap((char *)0x0000, 0x2000, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) != MAP_FAILED) {
314	>	D(bug("Could allocate the Low Memory globals\n"));
315	>	lm_area_mapped = true;
316	>	}
317	>	// Exit on error
318	>	else {
319	>	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
320	>	ErrorAlert(str);
321		QuitEmulator();
322	<	}
323	<	RAMBaseHost = (uint8 *)mmap(address_space, RAMSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, fd, 0);
324	<	ROMBaseHost = (uint8 *)mmap(address_space + 0x00400000, 0x80000, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, fd, 0);
325	<	close(fd);
326	<	char *nam = tmpnam(NULL);
327	<	int good_address_fd = open(nam, O_CREAT | O_RDWR, 0600);
328	<	char buffer[4096];
329	<	memset(buffer, 1, sizeof(buffer));
330	<	write(good_address_fd, buffer, sizeof(buffer));
331	<	unlink(nam);
332	<	for (int i=0; i<RAMSize; i+=4096)
333	<	mmap(good_address_map + i, 4096, PROT_READ, MAP_FIXED | MAP_PRIVATE, good_address_fd, 0);
334	<	for (int i=0; i<0x80000; i+=4096)
335	<	mmap(good_address_map + i + 0x00400000, 4096, PROT_READ, MAP_FIXED | MAP_PRIVATE, good_address_fd, 0);
322	>	}
323	>	#endif
324	>
325	>	#if USE_SCRATCHMEM_SUBTERFUGE
326	>	// Allocate scratch memory
327	>	ScratchMem = (uint8 *)malloc(SCRATCH_MEM_SIZE);
328	>	if (ScratchMem == NULL) {
329	>	ErrorAlert(GetString(STR_NO_MEM_ERR));
330	>	QuitEmulator();
331	>	}
332	>	ScratchMem += SCRATCH_MEM_SIZE/2;       // ScratchMem points to middle of block
333	>	#endif
334	>
335	>	// Create areas for Mac RAM and ROM
336	>	#if REAL_ADDRESSING || DIRECT_ADDRESSING
337	>	// gb-- Overkill, needs to be cleaned up. Probably explode it for either
338	>	// real or direct addressing mode.
339	>	#if REAL_ADDRESSING
340	>	if (memory_mapped_from_zero) {
341	>	RAMBaseHost = (uint8 *)0;
342	>	ROMBaseHost = RAMBaseHost + aligned_ram_size;
343	>	}
344	>	else
345	>	#endif
346	>	{
347	>	RAMBaseHost = (uint8 *)mmap(0, mapped_ram_rom_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, zero_fd, 0);
348	>	if (RAMBaseHost == (uint8 *)MAP_FAILED) {
349	>	ErrorAlert(GetString(STR_NO_MEM_ERR));
350	>	QuitEmulator();
351	>	}
352	>	ROMBaseHost = RAMBaseHost + aligned_ram_size;
353	>	}
354		#else
355	<	RAMBaseHost = new uint8[RAMSize];
356	<	ROMBaseHost = new uint8[0x100000];
355	>	RAMBaseHost = (uint8 *)malloc(RAMSize);
356	>	ROMBaseHost = (uint8 *)malloc(0x100000);
357	>	if (RAMBaseHost == NULL || ROMBaseHost == NULL) {
358	>	ErrorAlert(GetString(STR_NO_MEM_ERR));
359	>	QuitEmulator();
360	>	}
361		#endif
362
363	+	#if DIRECT_ADDRESSING
364	+	// Initialize MEMBaseDiff now so that Host2MacAddr in the Video module
365	+	// will return correct results
366	+	RAMBaseMac = 0;
367	+	ROMBaseMac = RAMBaseMac + aligned_ram_size;
368	+	InitMEMBaseDiff(RAMBaseHost, RAMBaseMac);
369	+	#endif
370	+	#if REAL_ADDRESSING // && !EMULATED_68K
371	+	RAMBaseMac = (uint32)RAMBaseHost;
372	+	ROMBaseMac = (uint32)ROMBaseHost;
373	+	#endif
374	+	D(bug("Mac RAM starts at %p (%08x)\n", RAMBaseHost, RAMBaseMac));
375	+	D(bug("Mac ROM starts at %p (%08x)\n", ROMBaseHost, ROMBaseMac));
376	+
377		// Get rom file path from preferences
378		const char *rom_path = PrefsFindString("rom");
379
#	Line 240 | Line 397 | int main(int argc, char **argv)
397		QuitEmulator();
398		}
399
400	+	#if !EMULATED_68K
401	+	// Get CPU model
402	+	int mib[2] = {CTL_HW, HW_MODEL};
403	+	char *model;
404	+	size_t model_len;
405	+	sysctl(mib, 2, NULL, &model_len, NULL, 0);
406	+	model = (char *)malloc(model_len);
407	+	sysctl(mib, 2, model, &model_len, NULL, 0);
408	+	D(bug("Model: %s\n", model));
409	+
410	+	// Set CPU and FPU type
411	+	CPUIs68060 = false;
412	+	if (strstr(model, "020"))
413	+	CPUType = 2;
414	+	else if (strstr(model, "030"))
415	+	CPUType = 3;
416	+	else if (strstr(model, "040"))
417	+	CPUType = 4;
418	+	else if (strstr(model, "060")) {
419	+	CPUType = 4;
420	+	CPUIs68060 = true;
421	+	} else {
422	+	printf("WARNING: Cannot detect CPU type, assuming 68020\n");
423	+	CPUType = 2;
424	+	}
425	+	FPUType = 1;    // NetBSD has an FPU emulation, so the FPU ought to be available at all times
426	+	TwentyFourBitAddressing = false;
427	+	#endif
428	+
429		// Initialize everything
430		if (!InitAll())
431		QuitEmulator();
432	+	D(bug("Initialization complete\n"));
433
434	<	// Start XPRAM watchdog thread
435	<	xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
434	>	#ifdef HAVE_PTHREADS
435	>	// Get handle of main thread
436	>	emul_thread = pthread_self();
437	>	#endif
438	>
439	>	#if !EMULATED_68K
440	>	// (Virtual) supervisor mode, disable interrupts
441	>	EmulatedSR = 0x2700;
442	>
443	>	// Create and install stack for signal handlers
444	>	sig_stack = malloc(SIG_STACK_SIZE);
445	>	D(bug("Signal stack at %p\n", sig_stack));
446	>	if (sig_stack == NULL) {
447	>	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
448	>	QuitEmulator();
449	>	}
450	>	stack_t new_stack;
451	>	new_stack.ss_sp = sig_stack;
452	>	new_stack.ss_flags = 0;
453	>	new_stack.ss_size = SIG_STACK_SIZE;
454	>	if (sigaltstack(&new_stack, NULL) < 0) {
455	>	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
456	>	ErrorAlert(str);
457	>	QuitEmulator();
458	>	}
459	>
460	>	// Install SIGILL handler for emulating privileged instructions and
461	>	// executing A-Trap and EMUL_OP opcodes
462	>	sigemptyset(&sigill_sa.sa_mask);        // Block virtual 68k interrupts during SIGILL handling
463	>	sigaddset(&sigill_sa.sa_mask, SIG_IRQ);
464	>	sigaddset(&sigill_sa.sa_mask, SIGALRM);
465	>	sigill_sa.sa_handler = (void (*)(int))sigill_handler;
466	>	sigill_sa.sa_flags = SA_ONSTACK;
467	>	if (sigaction(SIGILL, &sigill_sa, NULL) < 0) {
468	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno));
469	>	ErrorAlert(str);
470	>	QuitEmulator();
471	>	}
472	>
473	>	// Install virtual 68k interrupt signal handler
474	>	sigemptyset(&sigirq_sa.sa_mask);
475	>	sigaddset(&sigirq_sa.sa_mask, SIGALRM);
476	>	sigirq_sa.sa_handler = (void (*)(int))sigirq_handler;
477	>	sigirq_sa.sa_flags = SA_ONSTACK | SA_RESTART;
478	>	if (sigaction(SIG_IRQ, &sigirq_sa, NULL) < 0) {
479	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_IRQ", strerror(errno));
480	>	ErrorAlert(str);
481	>	QuitEmulator();
482	>	}
483	>	#endif
484	>
485	>	#ifdef ENABLE_MON
486	>	// Setup SIGINT handler to enter mon
487	>	sigemptyset(&sigint_sa.sa_mask);
488	>	sigint_sa.sa_handler = (void (*)(int))sigint_handler;
489	>	sigint_sa.sa_flags = 0;
490	>	sigaction(SIGINT, &sigint_sa, NULL);
491	>	#endif
492
493		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
494	<	// Start 60Hz timer
494	>
495	>	// POSIX.4 timers and real-time signals available, start 60Hz timer
496		sigemptyset(&timer_sa.sa_mask);
497	+	timer_sa.sa_sigaction = (void (*)(int, siginfo_t *, void *))one_tick;
498		timer_sa.sa_flags = SA_SIGINFO | SA_RESTART;
254	–	timer_sa.sa_sigaction = one_tick;
499		if (sigaction(SIG_TIMER, &timer_sa, NULL) < 0) {
500	<	printf("FATAL: cannot set up timer signal handler\n");
500	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_TIMER", strerror(errno));
501	>	ErrorAlert(str);
502		QuitEmulator();
503		}
504		struct sigevent timer_event;
505		timer_event.sigev_notify = SIGEV_SIGNAL;
506		timer_event.sigev_signo = SIG_TIMER;
507		if (timer_create(CLOCK_REALTIME, &timer_event, &timer) < 0) {
508	<	printf("FATAL: cannot create timer\n");
508	>	sprintf(str, GetString(STR_TIMER_CREATE_ERR), strerror(errno));
509	>	ErrorAlert(str);
510		QuitEmulator();
511		}
512		struct itimerspec req;
#	Line 269 | Line 515 | int main(int argc, char **argv)
515		req.it_interval.tv_sec = 0;
516		req.it_interval.tv_nsec = 16625000;
517		if (timer_settime(timer, 0, &req, NULL) < 0) {
518	<	printf("FATAL: cannot start timer\n");
518	>	sprintf(str, GetString(STR_TIMER_SETTIME_ERR), strerror(errno));
519	>	ErrorAlert(str);
520		QuitEmulator();
521		}
522	+	D(bug("60Hz timer started\n"));
523
524	<	#else
524	>	#elif defined(HAVE_PTHREADS)
525
526	<	// Start 60Hz thread
526	>	// POSIX threads available, start 60Hz thread
527		pthread_attr_init(&tick_thread_attr);
528		#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
529		if (geteuid() == 0) {
#	Line 288 | Line 536 | int main(int argc, char **argv)
536		#endif
537		tick_thread_active = (pthread_create(&tick_thread, &tick_thread_attr, tick_func, NULL) == 0);
538		if (!tick_thread_active) {
539	<	printf("FATAL: cannot create tick thread\n");
539	>	sprintf(str, GetString(STR_TICK_THREAD_ERR), strerror(errno));
540	>	ErrorAlert(str);
541	>	QuitEmulator();
542	>	}
543	>	D(bug("60Hz thread started\n"));
544	>
545	>	#else
546	>
547	>	// Start 60Hz timer
548	>	sigemptyset(&timer_sa.sa_mask);         // Block virtual 68k interrupts during SIGARLM handling
549	>	sigaddset(&timer_sa.sa_mask, SIG_IRQ);
550	>	timer_sa.sa_handler = one_tick;
551	>	timer_sa.sa_flags = SA_ONSTACK | SA_RESTART;
552	>	if (sigaction(SIGALRM, &timer_sa, NULL) < 0) {
553	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGALRM", strerror(errno));
554	>	ErrorAlert(str);
555		QuitEmulator();
556		}
557	+	struct itimerval req;
558	+	req.it_interval.tv_sec = req.it_value.tv_sec = 0;
559	+	req.it_interval.tv_usec = req.it_value.tv_usec = 16625;
560	+	setitimer(ITIMER_REAL, &req, NULL);
561	+
562		#endif
563
564	<	#if ENABLE_MON
565	<	// Setup SIGINT handler to enter mon
566	<	sigemptyset(&sigint_sa.sa_mask);
567	<	sigint_sa.sa_flags = 0;
568	<	sigint_sa.sa_handler = sigint_handler;
301	<	sigaction(SIGINT, &sigint_sa, NULL);
564	>	#ifdef HAVE_PTHREADS
565	>	// Start XPRAM watchdog thread
566	>	memcpy(last_xpram, XPRAM, 256);
567	>	xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
568	>	D(bug("XPRAM thread started\n"));
569		#endif
570
571		// Start 68k and jump to ROM boot routine
572	+	D(bug("Starting emulation...\n"));
573		Start680x0();
574
575		QuitEmulator();
#	Line 315 | Line 583 | int main(int argc, char **argv)
583
584		void QuitEmulator(void)
585		{
586	+	D(bug("QuitEmulator\n"));
587	+
588	+	#if EMULATED_68K
589		// Exit 680x0 emulation
590		Exit680x0();
591	+	#endif
592
593		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
594		// Stop 60Hz timer
595		timer_delete(timer);
596	<	#else
596	>	#elif defined(HAVE_PTHREADS)
597		// Stop 60Hz thread
598		if (tick_thread_active) {
599		tick_thread_cancel = true;
#	Line 330 | Line 602 | void QuitEmulator(void)
602		#endif
603		pthread_join(tick_thread, NULL);
604		}
605	+	#else
606	+	struct itimerval req;
607	+	req.it_interval.tv_sec = req.it_value.tv_sec = 0;
608	+	req.it_interval.tv_usec = req.it_value.tv_usec = 0;
609	+	setitimer(ITIMER_REAL, &req, NULL);
610		#endif
611
612	+	#ifdef HAVE_PTHREADS
613		// Stop XPRAM watchdog thread
614		if (xpram_thread_active) {
615		xpram_thread_cancel = true;
#	Line 340 | Line 618 | void QuitEmulator(void)
618		#endif
619		pthread_join(xpram_thread, NULL);
620		}
621	+	#endif
622
623		// Deinitialize everything
624		ExitAll();
625
626	<	// Delete ROM area
627	<	delete[] ROMBaseHost;
626	>	// Free ROM/RAM areas
627	>	#if REAL_ADDRESSING
628	>	if (memory_mapped_from_zero)
629	>	munmap((caddr_t)0x0000, mapped_ram_rom_size);
630	>	else
631	>	#endif
632	>	#if REAL_ADDRESSING || DIRECT_ADDRESSING
633	>	if (RAMBaseHost != (uint8 *)MAP_FAILED) {
634	>	munmap((caddr_t)RAMBaseHost, mapped_ram_rom_size);
635	>	RAMBaseHost = NULL;
636	>	}
637	>	#else
638	>	if (ROMBaseHost) {
639	>	free(ROMBaseHost);
640	>	ROMBaseHost = NULL;
641	>	}
642	>	if (RAMBaseHost) {
643	>	free(RAMBaseHost);
644	>	RAMBaseHost = NULL;
645	>	}
646	>	#endif
647	>
648	>	#if USE_SCRATCHMEM_SUBTERFUGE
649	>	// Delete scratch memory area
650	>	if (ScratchMem) {
651	>	free((void *)(ScratchMem - SCRATCH_MEM_SIZE/2));
652	>	ScratchMem = NULL;
653	>	}
654	>	#endif
655	>
656	>	#if REAL_ADDRESSING
657	>	// Delete Low Memory area
658	>	if (lm_area_mapped)
659	>	munmap((char *)0x0000, 0x2000);
660	>	#endif
661
662	<	// Delete RAM area
663	<	delete[] RAMBaseHost;
662	>	// Close /dev/zero
663	>	if (zero_fd > 0)
664	>	close(zero_fd);
665
666		// Exit system routines
667		SysExit();
#	Line 369 | Line 682 | void QuitEmulator(void)
682		*  or a dynamically recompiling emulator)
683		*/
684
372	–	#if EMULATED_68K
685		void FlushCodeCache(void *start, uint32 size)
686		{
687	<	}
687	>	#if !EMULATED_68K && defined(__NetBSD__)
688	>	m68k_sync_icache(start, size);
689		#endif
690	+	}
691
692
693		/*
694		*  SIGINT handler, enters mon
695		*/
696
697	<	#if ENABLE_MON
384	<	extern void m68k_dumpstate(uaecptr *nextpc);
697	>	#ifdef ENABLE_MON
698		static void sigint_handler(...)
699		{
700	+	#if EMULATED_68K
701		uaecptr nextpc;
702	+	extern void m68k_dumpstate(uaecptr *nextpc);
703		m68k_dumpstate(&nextpc);
704	<	char *arg[2] = {"rmon", NULL};
705	<	mon(1, arg);
704	>	#else
705	>	char *arg[4] = {"mon", "-m", "-r", NULL};
706	>	mon(3, arg);
707		QuitEmulator();
708	+	#endif
709		}
710		#endif
711
#	Line 399 | Line 716 | static void sigint_handler(...)
716
717		uint32 InterruptFlags = 0;
718
719	+	#if EMULATED_68K
720		void SetInterruptFlag(uint32 flag)
721		{
722	+	#ifdef HAVE_PTHREADS
723		pthread_mutex_lock(&intflag_lock);
724		InterruptFlags |= flag;
725		pthread_mutex_unlock(&intflag_lock);
726	+	#else
727	+	InterruptFlags |= flag;         // Pray that this is an atomic operation...
728	+	#endif
729		}
730
731		void ClearInterruptFlag(uint32 flag)
732		{
733	+	#ifdef HAVE_PTHREADS
734		pthread_mutex_lock(&intflag_lock);
735		InterruptFlags &= ~flag;
736		pthread_mutex_unlock(&intflag_lock);
737	+	#else
738	+	InterruptFlags &= ~flag;
739	+	#endif
740	+	}
741	+	#endif
742	+
743	+	#if !EMULATED_68K
744	+	void TriggerInterrupt(void)
745	+	{
746	+	#if defined(HAVE_PTHREADS)
747	+	pthread_kill(emul_thread, SIG_IRQ);
748	+	#else
749	+	raise(SIG_IRQ);
750	+	#endif
751		}
752
753	+	void TriggerNMI(void)
754	+	{
755	+	// not yet supported
756	+	}
757	+	#endif
758	+
759	+
760	+	/*
761	+	*  XPRAM watchdog thread (saves XPRAM every minute)
762	+	*/
763	+
764	+	static void xpram_watchdog(void)
765	+	{
766	+	if (memcmp(last_xpram, XPRAM, 256)) {
767	+	memcpy(last_xpram, XPRAM, 256);
768	+	SaveXPRAM();
769	+	}
770	+	}
771	+
772	+	#ifdef HAVE_PTHREADS
773	+	static void *xpram_func(void *arg)
774	+	{
775	+	while (!xpram_thread_cancel) {
776	+	for (int i=0; i<60 && !xpram_thread_cancel; i++)
777	+	Delay_usec(999999);             // Only wait 1 second so we quit promptly when xpram_thread_cancel becomes true
778	+	xpram_watchdog();
779	+	}
780	+	return NULL;
781	+	}
782	+	#endif
783	+
784
785		/*
786		*  60Hz thread (really 60.15Hz)
787		*/
788
789	+	static void one_second(void)
790	+	{
791	+	// Pseudo Mac 1Hz interrupt, update local time
792	+	WriteMacInt32(0x20c, TimerDateTime());
793	+
794	+	SetInterruptFlag(INTFLAG_1HZ);
795	+	TriggerInterrupt();
796	+
797	+	#ifndef HAVE_PTHREADS
798	+	static int second_counter = 0;
799	+	if (++second_counter > 60) {
800	+	second_counter = 0;
801	+	xpram_watchdog();
802	+	}
803	+	#endif
804	+	}
805	+
806		static void one_tick(...)
807		{
808		static int tick_counter = 0;
424	–
425	–	// Pseudo Mac 1Hz interrupt, update local time
809		if (++tick_counter > 60) {
810		tick_counter = 0;
811	<	WriteMacInt32(0x20c, TimerDateTime());
811	>	one_second();
812		}
813
814	+	#ifndef HAVE_PTHREADS
815	+	// No threads available, perform video refresh from here
816	+	VideoRefresh();
817	+	#endif
818	+
819		// Trigger 60Hz interrupt
820		if (ROMVersion != ROM_VERSION_CLASSIC || HasMacStarted()) {
821		SetInterruptFlag(INTFLAG_60HZ);
#	Line 435 | Line 823 | static void one_tick(...)
823		}
824		}
825
826	+	#ifdef HAVE_PTHREADS
827		static void *tick_func(void *arg)
828		{
829	+	uint64 next = GetTicks_usec();
830		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
831		one_tick();
832	+	next += 16625;
833	+	int64 delay = next - GetTicks_usec();
834	+	if (delay > 0)
835	+	Delay_usec(delay);
836	+	else if (delay < -16625)
837	+	next = GetTicks_usec();
838		}
839		return NULL;
840		}
841	+	#endif
842
843
844		/*
845	<	*  XPRAM watchdog thread (saves XPRAM every minute)
845	>	*  Get current value of microsecond timer
846		*/
847
848	<	void *xpram_func(void *arg)
848	>	uint64 GetTicks_usec(void)
849		{
850	<	uint8 last_xpram[256];
851	<	memcpy(last_xpram, XPRAM, 256);
850	>	#ifdef HAVE_CLOCK_GETTIME
851	>	struct timespec t;
852	>	clock_gettime(CLOCK_REALTIME, &t);
853	>	return (uint64)t.tv_sec * 1000000 + t.tv_nsec / 1000;
854	>	#else
855	>	struct timeval t;
856	>	gettimeofday(&t, NULL);
857	>	return (uint64)t.tv_sec * 1000000 + t.tv_usec;
858	>	#endif
859	>	}
860
861	<	while (!xpram_thread_cancel) {
862	<	for (int i=0; i<60 && !xpram_thread_cancel; i++) {
863	<	#ifdef HAVE_NANOSLEEP
864	<	struct timespec req = {1, 0};
865	<	nanosleep(&req, NULL);
861	>
862	>	/*
863	>	*  Delay by specified number of microseconds (<1 second)
864	>	*  (adapted from SDL_Delay() source; this function is designed to provide
865	>	*  the highest accuracy possible)
866	>	*/
867	>
868	>	#if defined(linux)
869	>	// Linux select() changes its timeout parameter upon return to contain
870	>	// the remaining time. Most other unixen leave it unchanged or undefined.
871	>	#define SELECT_SETS_REMAINING
872	>	#elif defined(__FreeBSD__) || defined(__sun__)
873	>	#define USE_NANOSLEEP
874	>	#elif defined(HAVE_PTHREADS) && defined(sgi)
875	>	// SGI pthreads has a bug when using pthreads+signals+nanosleep,
876	>	// so instead of using nanosleep, wait on a CV which is never signalled.
877	>	#define USE_COND_TIMEDWAIT
878	>	#endif
879	>
880	>	void Delay_usec(uint32 usec)
881	>	{
882	>	int was_error;
883	>
884	>	#if defined(USE_NANOSLEEP)
885	>	struct timespec elapsed, tv;
886	>	#elif defined(USE_COND_TIMEDWAIT)
887	>	// Use a local mutex and cv, so threads remain independent
888	>	pthread_cond_t delay_cond = PTHREAD_COND_INITIALIZER;
889	>	pthread_mutex_t delay_mutex = PTHREAD_MUTEX_INITIALIZER;
890	>	struct timespec elapsed;
891	>	uint64 future;
892		#else
893	<	usleep(1000000);
893	>	struct timeval tv;
894	>	#ifndef SELECT_SETS_REMAINING
895	>	uint64 then, now, elapsed;
896		#endif
897	+	#endif
898	+
899	+	// Set the timeout interval - Linux only needs to do this once
900	+	#if defined(SELECT_SETS_REMAINING)
901	+	tv.tv_sec = 0;
902	+	tv.tv_usec = usec;
903	+	#elif defined(USE_NANOSLEEP)
904	+	elapsed.tv_sec = 0;
905	+	elapsed.tv_nsec = usec * 1000;
906	+	#elif defined(USE_COND_TIMEDWAIT)
907	+	future = GetTicks_usec() + usec;
908	+	elapsed.tv_sec = future / 1000000;
909	+	elapsed.tv_nsec = (future % 1000000) * 1000;
910	+	#else
911	+	then = GetTicks_usec();
912	+	#endif
913	+
914	+	do {
915	+	errno = 0;
916	+	#if defined(USE_NANOSLEEP)
917	+	tv.tv_sec = elapsed.tv_sec;
918	+	tv.tv_nsec = elapsed.tv_nsec;
919	+	was_error = nanosleep(&tv, &elapsed);
920	+	#elif defined(USE_COND_TIMEDWAIT)
921	+	was_error = pthread_mutex_lock(&delay_mutex);
922	+	was_error = pthread_cond_timedwait(&delay_cond, &delay_mutex, &elapsed);
923	+	was_error = pthread_mutex_unlock(&delay_mutex);
924	+	#else
925	+	#ifndef SELECT_SETS_REMAINING
926	+	// Calculate the time interval left (in case of interrupt)
927	+	now = GetTicks_usec();
928	+	elapsed = now - then;
929	+	then = now;
930	+	if (elapsed >= usec)
931	+	break;
932	+	usec -= elapsed;
933	+	tv.tv_sec = 0;
934	+	tv.tv_usec = usec;
935	+	#endif
936	+	was_error = select(0, NULL, NULL, NULL, &tv);
937	+	#endif
938	+	} while (was_error && (errno == EINTR));
939	+	}
940	+
941	+
942	+	#if !EMULATED_68K
943	+	/*
944	+	*  Virtual 68k interrupt handler
945	+	*/
946	+
947	+	static void sigirq_handler(int sig, int code, struct sigcontext *scp)
948	+	{
949	+	// Interrupts disabled? Then do nothing
950	+	if (EmulatedSR & 0x0700)
951	+	return;
952	+
953	+	struct sigstate *state = (struct sigstate *)scp->sc_ap;
954	+	M68kRegisters *regs = (M68kRegisters *)&state->ss_frame;
955	+
956	+	// Set up interrupt frame on stack
957	+	uint32 a7 = regs->a[7];
958	+	a7 -= 2;
959	+	WriteMacInt16(a7, 0x64);
960	+	a7 -= 4;
961	+	WriteMacInt32(a7, scp->sc_pc);
962	+	a7 -= 2;
963	+	WriteMacInt16(a7, scp->sc_ps | EmulatedSR);
964	+	scp->sc_sp = regs->a[7] = a7;
965	+
966	+	// Set interrupt level
967	+	EmulatedSR |= 0x2100;
968	+
969	+	// Jump to MacOS interrupt handler on return
970	+	scp->sc_pc = ReadMacInt32(0x64);
971	+	}
972	+
973	+
974	+	/*
975	+	*  SIGILL handler, for emulation of privileged instructions and executing
976	+	*  A-Trap and EMUL_OP opcodes
977	+	*/
978	+
979	+	static void sigill_handler(int sig, int code, struct sigcontext *scp)
980	+	{
981	+	struct sigstate *state = (struct sigstate *)scp->sc_ap;
982	+	uint16 *pc = (uint16 *)scp->sc_pc;
983	+	uint16 opcode = *pc;
984	+	M68kRegisters *regs = (M68kRegisters *)&state->ss_frame;
985	+
986	+	#define INC_PC(n) scp->sc_pc += (n)
987	+
988	+	#define GET_SR (scp->sc_ps | EmulatedSR)
989	+
990	+	#define STORE_SR(v) \
991	+	scp->sc_ps = (v) & 0xff; \
992	+	EmulatedSR = (v) & 0xe700; \
993	+	if (((v) & 0x0700) == 0 && InterruptFlags) \
994	+	TriggerInterrupt();
995	+
996	+	//printf("opcode %04x at %p, sr %04x, emul_sr %04x\n", opcode, pc, scp->sc_ps, EmulatedSR);
997	+
998	+	if ((opcode & 0xf000) == 0xa000) {
999	+
1000	+	// A-Line instruction, set up A-Line trap frame on stack
1001	+	uint32 a7 = regs->a[7];
1002	+	a7 -= 2;
1003	+	WriteMacInt16(a7, 0x28);
1004	+	a7 -= 4;
1005	+	WriteMacInt32(a7, (uint32)pc);
1006	+	a7 -= 2;
1007	+	WriteMacInt16(a7, GET_SR);
1008	+	scp->sc_sp = regs->a[7] = a7;
1009	+
1010	+	// Jump to MacOS A-Line handler on return
1011	+	scp->sc_pc = ReadMacInt32(0x28);
1012	+
1013	+	} else if ((opcode & 0xff00) == 0x7100) {
1014	+
1015	+	// Extended opcode, push registers on user stack
1016	+	uint32 a7 = regs->a[7];
1017	+	a7 -= 4;
1018	+	WriteMacInt32(a7, (uint32)pc);
1019	+	a7 -= 2;
1020	+	WriteMacInt16(a7, scp->sc_ps);
1021	+	for (int i=7; i>=0; i--) {
1022	+	a7 -= 4;
1023	+	WriteMacInt32(a7, regs->a[i]);
1024	+	}
1025	+	for (int i=7; i>=0; i--) {
1026	+	a7 -= 4;
1027	+	WriteMacInt32(a7, regs->d[i]);
1028		}
1029	<	if (memcmp(last_xpram, XPRAM, 256)) {
1030	<	memcpy(last_xpram, XPRAM, 256);
1031	<	SaveXPRAM();
1029	>	scp->sc_sp = regs->a[7] = a7;
1030	>
1031	>	// Jump to EmulOp trampoline code on return
1032	>	scp->sc_pc = (uint32)EmulOpTrampoline;
1033	>
1034	>	} else switch (opcode) {        // Emulate privileged instructions
1035	>
1036	>	case 0x40e7:    // move sr,-(sp)
1037	>	regs->a[7] -= 2;
1038	>	WriteMacInt16(regs->a[7], GET_SR);
1039	>	scp->sc_sp = regs->a[7];
1040	>	INC_PC(2);
1041	>	break;
1042	>
1043	>	case 0x46df: {  // move (sp)+,sr
1044	>	uint16 sr = ReadMacInt16(regs->a[7]);
1045	>	STORE_SR(sr);
1046	>	regs->a[7] += 2;
1047	>	scp->sc_sp = regs->a[7];
1048	>	INC_PC(2);
1049	>	break;
1050		}
1051	+
1052	+	case 0x007c: {  // ori #xxxx,sr
1053	+	uint16 sr = GET_SR | pc[1];
1054	+	scp->sc_ps = sr & 0xff;         // oring bits into the sr can't enable interrupts, so we don't need to call STORE_SR
1055	+	EmulatedSR = sr & 0xe700;
1056	+	INC_PC(4);
1057	+	break;
1058	+	}
1059	+
1060	+	case 0x027c: {  // andi #xxxx,sr
1061	+	uint16 sr = GET_SR & pc[1];
1062	+	STORE_SR(sr);
1063	+	INC_PC(4);
1064	+	break;
1065	+	}
1066	+
1067	+	case 0x46fc:    // move #xxxx,sr
1068	+	STORE_SR(pc[1]);
1069	+	INC_PC(4);
1070	+	break;
1071	+
1072	+	case 0x46ef: {  // move (xxxx,sp),sr
1073	+	uint16 sr = ReadMacInt16(regs->a[7] + (int32)(int16)pc[1]);
1074	+	STORE_SR(sr);
1075	+	INC_PC(4);
1076	+	break;
1077	+	}
1078	+
1079	+	case 0x46d8:    // move (a0)+,sr
1080	+	case 0x46d9: {  // move (a1)+,sr
1081	+	uint16 sr = ReadMacInt16(regs->a[opcode & 7]);
1082	+	STORE_SR(sr);
1083	+	regs->a[opcode & 7] += 2;
1084	+	INC_PC(2);
1085	+	break;
1086	+	}
1087	+
1088	+	case 0x40f8:    // move sr,xxxx.w
1089	+	WriteMacInt16(pc[1], GET_SR);
1090	+	INC_PC(4);
1091	+	break;
1092	+
1093	+	case 0x40d0:    // move sr,(a0)
1094	+	case 0x40d1:    // move sr,(a1)
1095	+	case 0x40d2:    // move sr,(a2)
1096	+	case 0x40d3:    // move sr,(a3)
1097	+	case 0x40d4:    // move sr,(a4)
1098	+	case 0x40d5:    // move sr,(a5)
1099	+	case 0x40d6:    // move sr,(a6)
1100	+	case 0x40d7:    // move sr,(sp)
1101	+	WriteMacInt16(regs->a[opcode & 7], GET_SR);
1102	+	INC_PC(2);
1103	+	break;
1104	+
1105	+	case 0x40c0:    // move sr,d0
1106	+	case 0x40c1:    // move sr,d1
1107	+	case 0x40c2:    // move sr,d2
1108	+	case 0x40c3:    // move sr,d3
1109	+	case 0x40c4:    // move sr,d4
1110	+	case 0x40c5:    // move sr,d5
1111	+	case 0x40c6:    // move sr,d6
1112	+	case 0x40c7:    // move sr,d7
1113	+	regs->d[opcode & 7] = GET_SR;
1114	+	INC_PC(2);
1115	+	break;
1116	+
1117	+	case 0x46c0:    // move d0,sr
1118	+	case 0x46c1:    // move d1,sr
1119	+	case 0x46c2:    // move d2,sr
1120	+	case 0x46c3:    // move d3,sr
1121	+	case 0x46c4:    // move d4,sr
1122	+	case 0x46c5:    // move d5,sr
1123	+	case 0x46c6:    // move d6,sr
1124	+	case 0x46c7: {  // move d7,sr
1125	+	uint16 sr = regs->d[opcode & 7];
1126	+	STORE_SR(sr);
1127	+	INC_PC(2);
1128	+	break;
1129	+	}
1130	+
1131	+	case 0xf327:    // fsave -(sp)
1132	+	if (CPUIs68060) {
1133	+	regs->a[7] -= 4;
1134	+	WriteMacInt32(regs->a[7], 0x60000000);  // Idle frame
1135	+	regs->a[7] -= 4;
1136	+	WriteMacInt32(regs->a[7], 0);
1137	+	regs->a[7] -= 4;
1138	+	WriteMacInt32(regs->a[7], 0);
1139	+	} else {
1140	+	regs->a[7] -= 4;
1141	+	WriteMacInt32(regs->a[7], 0x41000000);  // Idle frame
1142	+	}
1143	+	scp->sc_sp = regs->a[7];
1144	+	INC_PC(2);
1145	+	break;
1146	+
1147	+	case 0xf35f:    // frestore (sp)+
1148	+	if (CPUIs68060)
1149	+	regs->a[7] += 12;
1150	+	else
1151	+	regs->a[7] += 4;
1152	+	scp->sc_sp = regs->a[7];
1153	+	INC_PC(2);
1154	+	break;
1155	+
1156	+	case 0x4e73: {  // rte
1157	+	uint32 a7 = regs->a[7];
1158	+	uint16 sr = ReadMacInt16(a7);
1159	+	a7 += 2;
1160	+	scp->sc_ps = sr & 0xff;
1161	+	EmulatedSR = sr & 0xe700;
1162	+	scp->sc_pc = ReadMacInt32(a7);
1163	+	a7 += 4;
1164	+	uint16 format = ReadMacInt16(a7) >> 12;
1165	+	a7 += 2;
1166	+	static const int frame_adj[16] = {
1167	+	0, 0, 4, 4, 8, 0, 0, 52, 50, 12, 24, 84, 16, 0, 0, 0
1168	+	};
1169	+	scp->sc_sp = regs->a[7] = a7 + frame_adj[format];
1170	+	break;
1171	+	}
1172	+
1173	+	case 0x4e7a:    // movec cr,x
1174	+	switch (pc[1]) {
1175	+	case 0x0002:    // movec cacr,d0
1176	+	regs->d[0] = 0x3111;
1177	+	break;
1178	+	case 0x1002:    // movec cacr,d1
1179	+	regs->d[1] = 0x3111;
1180	+	break;
1181	+	case 0x0003:    // movec tc,d0
1182	+	case 0x0004:    // movec itt0,d0
1183	+	case 0x0005:    // movec itt1,d0
1184	+	case 0x0006:    // movec dtt0,d0
1185	+	case 0x0007:    // movec dtt1,d0
1186	+	case 0x0806:    // movec urp,d0
1187	+	case 0x0807:    // movec srp,d0
1188	+	regs->d[0] = 0;
1189	+	break;
1190	+	case 0x1000:    // movec sfc,d1
1191	+	case 0x1001:    // movec dfc,d1
1192	+	case 0x1003:    // movec tc,d1
1193	+	case 0x1801:    // movec vbr,d1
1194	+	regs->d[1] = 0;
1195	+	break;
1196	+	case 0x8801:    // movec vbr,a0
1197	+	regs->a[0] = 0;
1198	+	break;
1199	+	case 0x9801:    // movec vbr,a1
1200	+	regs->a[1] = 0;
1201	+	break;
1202	+	default:
1203	+	goto ill;
1204	+	}
1205	+	INC_PC(4);
1206	+	break;
1207	+
1208	+	case 0x4e7b:    // movec x,cr
1209	+	switch (pc[1]) {
1210	+	case 0x1000:    // movec d1,sfc
1211	+	case 0x1001:    // movec d1,dfc
1212	+	case 0x0801:    // movec d0,vbr
1213	+	case 0x1801:    // movec d1,vbr
1214	+	break;
1215	+	case 0x0002:    // movec d0,cacr
1216	+	case 0x1002:    // movec d1,cacr
1217	+	FlushCodeCache(NULL, 0);
1218	+	break;
1219	+	default:
1220	+	goto ill;
1221	+	}
1222	+	INC_PC(4);
1223	+	break;
1224	+
1225	+	case 0xf478:    // cpusha dc
1226	+	case 0xf4f8:    // cpusha dc/ic
1227	+	FlushCodeCache(NULL, 0);
1228	+	INC_PC(2);
1229	+	break;
1230	+
1231	+	default:
1232	+	ill:            printf("SIGILL num %d, code %d\n", sig, code);
1233	+	printf(" context %p:\n", scp);
1234	+	printf("  onstack %08x\n", scp->sc_onstack);
1235	+	printf("  sp %08x\n", scp->sc_sp);
1236	+	printf("  fp %08x\n", scp->sc_fp);
1237	+	printf("  pc %08x\n", scp->sc_pc);
1238	+	printf("   opcode %04x\n", opcode);
1239	+	printf("  sr %08x\n", scp->sc_ps);
1240	+	printf(" state %p:\n", state);
1241	+	printf("  flags %d\n", state->ss_flags);
1242	+	for (int i=0; i<8; i++)
1243	+	printf("  d%d %08x\n", i, state->ss_frame.f_regs[i]);
1244	+	for (int i=0; i<8; i++)
1245	+	printf("  a%d %08x\n", i, state->ss_frame.f_regs[i+8]);
1246	+
1247	+	#ifdef ENABLE_MON
1248	+	char *arg[4] = {"mon", "-m", "-r", NULL};
1249	+	mon(3, arg);
1250	+	#endif
1251	+	QuitEmulator();
1252	+	break;
1253		}
480	–	return NULL;
1254		}
1255	+	#endif
1256
1257
1258		/*
1259		*  Display alert
1260		*/
1261
1262	<	#if ENABLE_GTK
1262	>	#ifdef ENABLE_GTK
1263		static void dl_destroyed(void)
1264		{
1265		gtk_main_quit();
#	Line 530 | Line 1304 | void display_alert(int title_id, int pre
1304
1305		void ErrorAlert(const char *text)
1306		{
1307	<	#if ENABLE_GTK
1307	>	#ifdef ENABLE_GTK
1308		if (PrefsFindBool("nogui") || x_display == NULL) {
1309		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
1310		return;
#	Line 549 | Line 1323 | void ErrorAlert(const char *text)
1323
1324		void WarningAlert(const char *text)
1325		{
1326	<	#if ENABLE_GTK
1326	>	#ifdef ENABLE_GTK
1327		if (PrefsFindBool("nogui") || x_display == NULL) {
1328		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
1329		return;

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