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

Comparing BasiliskII/src/Unix/main_unix.cpp (file contents):
Revision 1.1 by cebix, 1999-10-03T14:16:25Z vs.
Revision 1.30 by cebix, 2001-02-02T20:52:57Z

#	Line 1 | Line 1
1		/*
2		*  main_unix.cpp - Startup code for Unix
3		*
4	<	*  Basilisk II (C) 1997-1999 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"
63	+	#include "rom_patches.h"
64		#include "xpram.h"
65		#include "timer.h"
32	–	#include "sony.h"
33	–	#include "disk.h"
34	–	#include "cdrom.h"
35	–	#include "scsi.h"
36	–	#include "audio.h"
66		#include "video.h"
67	<	#include "serial.h"
39	<	#include "ether.h"
40	<	#include "clip.h"
41	<	#include "rom_patches.h"
67	>	#include "emul_op.h"
68		#include "prefs.h"
69		#include "prefs_editor.h"
70		#include "macos_util.h"
#	Line 46 | Line 72
72		#include "version.h"
73		#include "main.h"
74
75	<	#define DEBUG 1
76	<	#include "debug.h"
51	<
52	<
53	<	#include <X11/Xlib.h>
54	<
55	<	#if ENABLE_GTK
56	<	#include <gtk/gtk.h>
75	>	#ifdef ENABLE_MON
76	>	# include "mon.h"
77		#endif
78
79	<	#if ENABLE_DGA
80	<	#include <X11/Xlib.h>
61	<	#include <X11/Xutil.h>
62	<	#include <X11/extensions/xf86dga.h>
63	<	#endif
79	>	#define DEBUG 0
80	>	#include "debug.h"
81
82
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	+
88	+
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
100		// CPU and FPU type, addressing mode
#	Line 75 | 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 87 | 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
148	<	static timer_t timer;                                                           // 60Hz timer
147	>	static timer_t timer;                           // 60Hz timer
148	>	#endif
149	>
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
#	Line 100 | Line 166 | static timer_t timer;                                                          // 60Hz tim
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 126 | 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 136 | 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];
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 151 | Line 257 | int main(int argc, char **argv)
257		QuitEmulator();
258		}
259
260	<	#if ENABLE_DGA
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(XDefaultScreen(x_display));
157	<	#endif
158	<
159	<	#if ENABLE_GTK
160	<	// Init GTK
161	<	gtk_set_locale();
162	<	gtk_init(&argc, &argv);
262	>	XF86DGAForkApp(DefaultScreen(x_display));
263		#endif
264
265		// Read preferences
266	<	PrefsInit();
266	>	PrefsInit(argc, argv);
267
268		// Init system routines
269		SysInit();
#	Line 173 | Line 273 | int main(int argc, char **argv)
273		if (!PrefsEditor())
274		QuitEmulator();
275
276	<	// Create area for Mac RAM
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) {
287		WarningAlert(GetString(STR_SMALL_RAM_WARN));
288		RAMSize = 1024*1024;
289		}
182	–	RAMBaseHost = new uint8[RAMSize];
290
291	<	// Create area for Mac ROM
292	<	ROMBaseHost = new uint8[0x100000];
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	>	#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 = (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 207 | Line 397 | int main(int argc, char **argv)
397		QuitEmulator();
398		}
399
400	<	// Check ROM version
401	<	if (!CheckROM()) {
402	<	ErrorAlert(GetString(STR_UNSUPPORTED_ROM_TYPE_ERR));
403	<	QuitEmulator();
404	<	}
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 (UAE emulation)
217	<	switch (ROMVersion) {
218	<	case ROM_VERSION_64K:
219	<	case ROM_VERSION_PLUS:
220	<	case ROM_VERSION_CLASSIC:
221	<	CPUType = 0;
222	<	FPUType = 0;
223	<	TwentyFourBitAddressing = true;
224	<	break;
225	<	case ROM_VERSION_II:
226	<	CPUType = 2;
227	<	FPUType = PrefsFindBool("fpu") ? 1 : 0;
228	<	TwentyFourBitAddressing = true;
229	<	break;
230	<	case ROM_VERSION_32:
231	<	CPUType = 3;
232	<	FPUType = PrefsFindBool("fpu") ? 1 : 0;
233	<	TwentyFourBitAddressing = false;
234	<	break;
235	<	}
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	<	// Load XPRAM
430	<	XPRAMInit();
431	<
432	<	// Set boot volume
242	<	int16 i16 = PrefsFindInt16("bootdrive");
243	<	XPRAM[0x78] = i16 >> 8;
244	<	XPRAM[0x79] = i16 & 0xff;
245	<	i16 = PrefsFindInt16("bootdriver");
246	<	XPRAM[0x7a] = i16 >> 8;
247	<	XPRAM[0x7b] = i16 & 0xff;
248	<
249	<	// Start XPRAM watchdog thread
250	<	xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
251	<
252	<	// Init drivers
253	<	SonyInit();
254	<	DiskInit();
255	<	CDROMInit();
256	<	SCSIInit();
257	<
258	<	// Init serial ports
259	<	SerialInit();
260	<
261	<	// Init network
262	<	EtherInit();
263	<
264	<	// Init Time Manager
265	<	TimerInit();
266	<
267	<	// Init clipboard
268	<	ClipInit();
429	>	// Initialize everything
430	>	if (!InitAll())
431	>	QuitEmulator();
432	>	D(bug("Initialization complete\n"));
433
434	<	// Init audio
435	<	AudioInit();
434	>	#ifdef HAVE_PTHREADS
435	>	// Get handle of main thread
436	>	emul_thread = pthread_self();
437	>	#endif
438
439	<	// Init video
440	<	if (!VideoInit(ROMVersion == ROM_VERSION_64K || ROMVersion == ROM_VERSION_PLUS || ROMVersion == ROM_VERSION_CLASSIC))
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	<	// Init 680x0 emulation (this also activates the memory system which is needed for PatchROM())
461	<	if (!Init680x0())
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 ROM patches
474	<	if (!PatchROM()) {
475	<	ErrorAlert(GetString(STR_UNSUPPORTED_ROM_TYPE_ERR));
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;
291	–	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 305 | Line 514 | int main(int argc, char **argv)
514		req.it_value.tv_nsec = 16625000;
515		req.it_interval.tv_sec = 0;
516		req.it_interval.tv_nsec = 16625000;
517	<	if (timer_settime(timer, TIMER_RELTIME, &req, NULL) < 0) {
518	<	printf("FATAL: cannot start timer\n");
517	>	if (timer_settime(timer, 0, &req, NULL) < 0) {
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 325 | 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	+	#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 344 | 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 359 | 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 369 | Line 618 | void QuitEmulator(void)
618		#endif
619		pthread_join(xpram_thread, NULL);
620		}
621	+	#endif
622
623	<	// Save XPRAM
624	<	XPRAMExit();
375	<
376	<	// Exit video
377	<	VideoExit();
378	<
379	<	// Exit audio
380	<	AudioExit();
381	<
382	<	// Exit clipboard
383	<	ClipExit();
384	<
385	<	// Exit Time Manager
386	<	TimerExit();
387	<
388	<	// Exit serial ports
389	<	SerialExit();
623	>	// Deinitialize everything
624	>	ExitAll();
625
626	<	// Exit network
627	<	EtherExit();
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	<	// Exit drivers
649	<	SCSIExit();
650	<	CDROMExit();
651	<	DiskExit();
652	<	SonyExit();
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	<	// Delete ROM area
657	<	delete[] ROMBaseHost;
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 422 | Line 682 | void QuitEmulator(void)
682		*  or a dynamically recompiling emulator)
683		*/
684
425	–	#if EMULATED_68K
685		void FlushCodeCache(void *start, uint32 size)
686		{
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	+	#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	+	#else
705	+	char *arg[4] = {"mon", "-m", "-r", NULL};
706	+	mon(3, arg);
707	+	QuitEmulator();
708	+	#endif
709		}
710		#endif
711
#	Line 435 | Line 716 | void FlushCodeCache(void *start, uint32
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;
460	–
461	–	// 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 471 | 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) {
477	–
478	–	// Wait
479	–	#ifdef HAVE_NANOSLEEP
480	–	struct timespec req = {0, 16625000};
481	–	nanosleep(&req, NULL);
482	–	#else
483	–	usleep(16625);
484	–	#endif
485	–
486	–	// 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__) || defined(sgi)
873	>	#define USE_NANOSLEEP
874	>	#endif
875	>
876	>	void Delay_usec(uint32 usec)
877	>	{
878	>	int was_error;
879	>
880	>	#ifdef USE_NANOSLEEP
881	>	struct timespec elapsed, tv;
882		#else
883	<	usleep(1000000);
883	>	struct timeval tv;
884	>	#ifndef SELECT_SETS_REMAINING
885	>	uint64 then, now, elapsed;
886	>	#endif
887		#endif
888	+
889	+	// Set the timeout interval - Linux only needs to do this once
890	+	#ifdef SELECT_SETS_REMAINING
891	+	tv.tv_sec = 0;
892	+	tv.tv_usec = usec;
893	+	#elif defined(USE_NANOSLEEP)
894	+	elapsed.tv_sec = 0;
895	+	elapsed.tv_nsec = usec * 1000;
896	+	#else
897	+	then = GetTicks_usec();
898	+	#endif
899	+
900	+	do {
901	+	errno = 0;
902	+	#ifdef USE_NANOSLEEP
903	+	tv.tv_sec = elapsed.tv_sec;
904	+	tv.tv_nsec = elapsed.tv_nsec;
905	+	was_error = nanosleep(&tv, &elapsed);
906	+	#else
907	+	#ifndef SELECT_SETS_REMAINING
908	+	// Calculate the time interval left (in case of interrupt)
909	+	now = GetTicks_usec();
910	+	elapsed = now - then;
911	+	then = now;
912	+	if (elapsed >= usec)
913	+	break;
914	+	usec -= elapsed;
915	+	tv.tv_sec = 0;
916	+	tv.tv_usec = usec;
917	+	#endif
918	+	was_error = select(0, NULL, NULL, NULL, &tv);
919	+	#endif
920	+	} while (was_error && (errno == EINTR));
921	+	}
922	+
923	+
924	+	#if !EMULATED_68K
925	+	/*
926	+	*  Virtual 68k interrupt handler
927	+	*/
928	+
929	+	static void sigirq_handler(int sig, int code, struct sigcontext *scp)
930	+	{
931	+	// Interrupts disabled? Then do nothing
932	+	if (EmulatedSR & 0x0700)
933	+	return;
934	+
935	+	struct sigstate *state = (struct sigstate *)scp->sc_ap;
936	+	M68kRegisters *regs = (M68kRegisters *)&state->ss_frame;
937	+
938	+	// Set up interrupt frame on stack
939	+	uint32 a7 = regs->a[7];
940	+	a7 -= 2;
941	+	WriteMacInt16(a7, 0x64);
942	+	a7 -= 4;
943	+	WriteMacInt32(a7, scp->sc_pc);
944	+	a7 -= 2;
945	+	WriteMacInt16(a7, scp->sc_ps | EmulatedSR);
946	+	scp->sc_sp = regs->a[7] = a7;
947	+
948	+	// Set interrupt level
949	+	EmulatedSR |= 0x2100;
950	+
951	+	// Jump to MacOS interrupt handler on return
952	+	scp->sc_pc = ReadMacInt32(0x64);
953	+	}
954	+
955	+
956	+	/*
957	+	*  SIGILL handler, for emulation of privileged instructions and executing
958	+	*  A-Trap and EMUL_OP opcodes
959	+	*/
960	+
961	+	static void sigill_handler(int sig, int code, struct sigcontext *scp)
962	+	{
963	+	struct sigstate *state = (struct sigstate *)scp->sc_ap;
964	+	uint16 *pc = (uint16 *)scp->sc_pc;
965	+	uint16 opcode = *pc;
966	+	M68kRegisters *regs = (M68kRegisters *)&state->ss_frame;
967	+
968	+	#define INC_PC(n) scp->sc_pc += (n)
969	+
970	+	#define GET_SR (scp->sc_ps | EmulatedSR)
971	+
972	+	#define STORE_SR(v) \
973	+	scp->sc_ps = (v) & 0xff; \
974	+	EmulatedSR = (v) & 0xe700; \
975	+	if (((v) & 0x0700) == 0 && InterruptFlags) \
976	+	TriggerInterrupt();
977	+
978	+	//printf("opcode %04x at %p, sr %04x, emul_sr %04x\n", opcode, pc, scp->sc_ps, EmulatedSR);
979	+
980	+	if ((opcode & 0xf000) == 0xa000) {
981	+
982	+	// A-Line instruction, set up A-Line trap frame on stack
983	+	uint32 a7 = regs->a[7];
984	+	a7 -= 2;
985	+	WriteMacInt16(a7, 0x28);
986	+	a7 -= 4;
987	+	WriteMacInt32(a7, (uint32)pc);
988	+	a7 -= 2;
989	+	WriteMacInt16(a7, GET_SR);
990	+	scp->sc_sp = regs->a[7] = a7;
991	+
992	+	// Jump to MacOS A-Line handler on return
993	+	scp->sc_pc = ReadMacInt32(0x28);
994	+
995	+	} else if ((opcode & 0xff00) == 0x7100) {
996	+
997	+	// Extended opcode, push registers on user stack
998	+	uint32 a7 = regs->a[7];
999	+	a7 -= 4;
1000	+	WriteMacInt32(a7, (uint32)pc);
1001	+	a7 -= 2;
1002	+	WriteMacInt16(a7, scp->sc_ps);
1003	+	for (int i=7; i>=0; i--) {
1004	+	a7 -= 4;
1005	+	WriteMacInt32(a7, regs->a[i]);
1006	+	}
1007	+	for (int i=7; i>=0; i--) {
1008	+	a7 -= 4;
1009	+	WriteMacInt32(a7, regs->d[i]);
1010	+	}
1011	+	scp->sc_sp = regs->a[7] = a7;
1012	+
1013	+	// Jump to EmulOp trampoline code on return
1014	+	scp->sc_pc = (uint32)EmulOpTrampoline;
1015	+
1016	+	} else switch (opcode) {        // Emulate privileged instructions
1017	+
1018	+	case 0x40e7:    // move sr,-(sp)
1019	+	regs->a[7] -= 2;
1020	+	WriteMacInt16(regs->a[7], GET_SR);
1021	+	scp->sc_sp = regs->a[7];
1022	+	INC_PC(2);
1023	+	break;
1024	+
1025	+	case 0x46df: {  // move (sp)+,sr
1026	+	uint16 sr = ReadMacInt16(regs->a[7]);
1027	+	STORE_SR(sr);
1028	+	regs->a[7] += 2;
1029	+	scp->sc_sp = regs->a[7];
1030	+	INC_PC(2);
1031	+	break;
1032	+	}
1033	+
1034	+	case 0x007c: {  // ori #xxxx,sr
1035	+	uint16 sr = GET_SR | pc[1];
1036	+	scp->sc_ps = sr & 0xff;         // oring bits into the sr can't enable interrupts, so we don't need to call STORE_SR
1037	+	EmulatedSR = sr & 0xe700;
1038	+	INC_PC(4);
1039	+	break;
1040		}
1041	<	if (memcmp(last_xpram, XPRAM, 256)) {
1042	<	memcpy(last_xpram, XPRAM, 256);
1043	<	SaveXPRAM();
1041	>
1042	>	case 0x027c: {  // andi #xxxx,sr
1043	>	uint16 sr = GET_SR & pc[1];
1044	>	STORE_SR(sr);
1045	>	INC_PC(4);
1046	>	break;
1047	>	}
1048	>
1049	>	case 0x46fc:    // move #xxxx,sr
1050	>	STORE_SR(pc[1]);
1051	>	INC_PC(4);
1052	>	break;
1053	>
1054	>	case 0x46ef: {  // move (xxxx,sp),sr
1055	>	uint16 sr = ReadMacInt16(regs->a[7] + (int32)(int16)pc[1]);
1056	>	STORE_SR(sr);
1057	>	INC_PC(4);
1058	>	break;
1059	>	}
1060	>
1061	>	case 0x46d8:    // move (a0)+,sr
1062	>	case 0x46d9: {  // move (a1)+,sr
1063	>	uint16 sr = ReadMacInt16(regs->a[opcode & 7]);
1064	>	STORE_SR(sr);
1065	>	regs->a[opcode & 7] += 2;
1066	>	INC_PC(2);
1067	>	break;
1068	>	}
1069	>
1070	>	case 0x40f8:    // move sr,xxxx.w
1071	>	WriteMacInt16(pc[1], GET_SR);
1072	>	INC_PC(4);
1073	>	break;
1074	>
1075	>	case 0x40d0:    // move sr,(a0)
1076	>	case 0x40d1:    // move sr,(a1)
1077	>	case 0x40d2:    // move sr,(a2)
1078	>	case 0x40d3:    // move sr,(a3)
1079	>	case 0x40d4:    // move sr,(a4)
1080	>	case 0x40d5:    // move sr,(a5)
1081	>	case 0x40d6:    // move sr,(a6)
1082	>	case 0x40d7:    // move sr,(sp)
1083	>	WriteMacInt16(regs->a[opcode & 7], GET_SR);
1084	>	INC_PC(2);
1085	>	break;
1086	>
1087	>	case 0x40c0:    // move sr,d0
1088	>	case 0x40c1:    // move sr,d1
1089	>	case 0x40c2:    // move sr,d2
1090	>	case 0x40c3:    // move sr,d3
1091	>	case 0x40c4:    // move sr,d4
1092	>	case 0x40c5:    // move sr,d5
1093	>	case 0x40c6:    // move sr,d6
1094	>	case 0x40c7:    // move sr,d7
1095	>	regs->d[opcode & 7] = GET_SR;
1096	>	INC_PC(2);
1097	>	break;
1098	>
1099	>	case 0x46c0:    // move d0,sr
1100	>	case 0x46c1:    // move d1,sr
1101	>	case 0x46c2:    // move d2,sr
1102	>	case 0x46c3:    // move d3,sr
1103	>	case 0x46c4:    // move d4,sr
1104	>	case 0x46c5:    // move d5,sr
1105	>	case 0x46c6:    // move d6,sr
1106	>	case 0x46c7: {  // move d7,sr
1107	>	uint16 sr = regs->d[opcode & 7];
1108	>	STORE_SR(sr);
1109	>	INC_PC(2);
1110	>	break;
1111		}
1112	+
1113	+	case 0xf327:    // fsave -(sp)
1114	+	if (CPUIs68060) {
1115	+	regs->a[7] -= 4;
1116	+	WriteMacInt32(regs->a[7], 0x60000000);  // Idle frame
1117	+	regs->a[7] -= 4;
1118	+	WriteMacInt32(regs->a[7], 0);
1119	+	regs->a[7] -= 4;
1120	+	WriteMacInt32(regs->a[7], 0);
1121	+	} else {
1122	+	regs->a[7] -= 4;
1123	+	WriteMacInt32(regs->a[7], 0x41000000);  // Idle frame
1124	+	}
1125	+	scp->sc_sp = regs->a[7];
1126	+	INC_PC(2);
1127	+	break;
1128	+
1129	+	case 0xf35f:    // frestore (sp)+
1130	+	if (CPUIs68060)
1131	+	regs->a[7] += 12;
1132	+	else
1133	+	regs->a[7] += 4;
1134	+	scp->sc_sp = regs->a[7];
1135	+	INC_PC(2);
1136	+	break;
1137	+
1138	+	case 0x4e73: {  // rte
1139	+	uint32 a7 = regs->a[7];
1140	+	uint16 sr = ReadMacInt16(a7);
1141	+	a7 += 2;
1142	+	scp->sc_ps = sr & 0xff;
1143	+	EmulatedSR = sr & 0xe700;
1144	+	scp->sc_pc = ReadMacInt32(a7);
1145	+	a7 += 4;
1146	+	uint16 format = ReadMacInt16(a7) >> 12;
1147	+	a7 += 2;
1148	+	static const int frame_adj[16] = {
1149	+	0, 0, 4, 4, 8, 0, 0, 52, 50, 12, 24, 84, 16, 0, 0, 0
1150	+	};
1151	+	scp->sc_sp = regs->a[7] = a7 + frame_adj[format];
1152	+	break;
1153	+	}
1154	+
1155	+	case 0x4e7a:    // movec cr,x
1156	+	switch (pc[1]) {
1157	+	case 0x0002:    // movec cacr,d0
1158	+	regs->d[0] = 0x3111;
1159	+	break;
1160	+	case 0x1002:    // movec cacr,d1
1161	+	regs->d[1] = 0x3111;
1162	+	break;
1163	+	case 0x0003:    // movec tc,d0
1164	+	case 0x0004:    // movec itt0,d0
1165	+	case 0x0005:    // movec itt1,d0
1166	+	case 0x0006:    // movec dtt0,d0
1167	+	case 0x0007:    // movec dtt1,d0
1168	+	case 0x0806:    // movec urp,d0
1169	+	case 0x0807:    // movec srp,d0
1170	+	regs->d[0] = 0;
1171	+	break;
1172	+	case 0x1000:    // movec sfc,d1
1173	+	case 0x1001:    // movec dfc,d1
1174	+	case 0x1003:    // movec tc,d1
1175	+	case 0x1801:    // movec vbr,d1
1176	+	regs->d[1] = 0;
1177	+	break;
1178	+	case 0x8801:    // movec vbr,a0
1179	+	regs->a[0] = 0;
1180	+	break;
1181	+	case 0x9801:    // movec vbr,a1
1182	+	regs->a[1] = 0;
1183	+	break;
1184	+	default:
1185	+	goto ill;
1186	+	}
1187	+	INC_PC(4);
1188	+	break;
1189	+
1190	+	case 0x4e7b:    // movec x,cr
1191	+	switch (pc[1]) {
1192	+	case 0x1000:    // movec d1,sfc
1193	+	case 0x1001:    // movec d1,dfc
1194	+	case 0x0801:    // movec d0,vbr
1195	+	case 0x1801:    // movec d1,vbr
1196	+	break;
1197	+	case 0x0002:    // movec d0,cacr
1198	+	case 0x1002:    // movec d1,cacr
1199	+	FlushCodeCache(NULL, 0);
1200	+	break;
1201	+	default:
1202	+	goto ill;
1203	+	}
1204	+	INC_PC(4);
1205	+	break;
1206	+
1207	+	case 0xf478:    // cpusha dc
1208	+	case 0xf4f8:    // cpusha dc/ic
1209	+	FlushCodeCache(NULL, 0);
1210	+	INC_PC(2);
1211	+	break;
1212	+
1213	+	default:
1214	+	ill:            printf("SIGILL num %d, code %d\n", sig, code);
1215	+	printf(" context %p:\n", scp);
1216	+	printf("  onstack %08x\n", scp->sc_onstack);
1217	+	printf("  sp %08x\n", scp->sc_sp);
1218	+	printf("  fp %08x\n", scp->sc_fp);
1219	+	printf("  pc %08x\n", scp->sc_pc);
1220	+	printf("   opcode %04x\n", opcode);
1221	+	printf("  sr %08x\n", scp->sc_ps);
1222	+	printf(" state %p:\n", state);
1223	+	printf("  flags %d\n", state->ss_flags);
1224	+	for (int i=0; i<8; i++)
1225	+	printf("  d%d %08x\n", i, state->ss_frame.f_regs[i]);
1226	+	for (int i=0; i<8; i++)
1227	+	printf("  a%d %08x\n", i, state->ss_frame.f_regs[i+8]);
1228	+
1229	+	#ifdef ENABLE_MON
1230	+	char *arg[4] = {"mon", "-m", "-r", NULL};
1231	+	mon(3, arg);
1232	+	#endif
1233	+	QuitEmulator();
1234	+	break;
1235		}
516	–	return NULL;
1236		}
1237	+	#endif
1238
1239
1240		/*
1241		*  Display alert
1242		*/
1243
1244	<	#if ENABLE_GTK
1244	>	#ifdef ENABLE_GTK
1245		static void dl_destroyed(void)
1246		{
1247		gtk_main_quit();
#	Line 566 | Line 1286 | void display_alert(int title_id, int pre
1286
1287		void ErrorAlert(const char *text)
1288		{
1289	<	#if ENABLE_GTK
1289	>	#ifdef ENABLE_GTK
1290		if (PrefsFindBool("nogui") || x_display == NULL) {
1291		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
1292		return;
#	Line 585 | Line 1305 | void ErrorAlert(const char *text)
1305
1306		void WarningAlert(const char *text)
1307		{
1308	<	#if ENABLE_GTK
1308	>	#ifdef ENABLE_GTK
1309		if (PrefsFindBool("nogui") || x_display == NULL) {
1310		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
1311		return;

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