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

Comparing BasiliskII/src/Unix/main_unix.cpp (file contents):
Revision 1.10 by cebix, 2000-01-21T13:47:05Z vs.
Revision 1.14 by cebix, 2000-07-14T21:29:13Z

#	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) 1997-2000 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 defined(USE_MAPPED_MEMORY) || REAL_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	+	#endif
54	+
55	+	#ifdef ENABLE_XF86_DGA
56	+	# include <X11/Xutil.h>
57	+	# include <X11/extensions/xf86dga.h>
58	+	#endif
59
60		#include "cpu_emulation.h"
61		#include "sys.h"
#	Line 31 | Line 63
63		#include "xpram.h"
64		#include "timer.h"
65		#include "video.h"
66	+	#include "emul_op.h"
67		#include "prefs.h"
68		#include "prefs_editor.h"
69		#include "macos_util.h"
#	Line 38 | Line 71
71		#include "version.h"
72		#include "main.h"
73
74	+	#ifdef ENABLE_MON
75	+	# include "mon.h"
76	+	#endif
77	+
78		#define DEBUG 0
79		#include "debug.h"
80
81
82	<	#include <X11/Xlib.h>
83	<
84	<	#if ENABLE_GTK
85	<	#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
82	>	// Constants
83	>	const char ROM_FILE_NAME[] = "ROM";
84	>	const int SIG_STACK_SIZE = SIGSTKSZ;    // Size of signal stack
85	>	const int SCRATCH_MEM_SIZE = 0x10000;   // Size of scratch memory area
86
57	–	#if ENABLE_MON
58	–	#include "mon.h"
59	–	#endif
87
88	<	#ifdef USE_MAPPED_MEMORY
89	<	#include <sys/mman.h>
90	<	extern char *address_space, *good_address_map;
88	>	#if !EMULATED_68K
89	>	// RAM and ROM pointers
90	>	uint32 RAMBaseMac;              // RAM base (Mac address space)
91	>	uint8 *RAMBaseHost;             // RAM base (host address space)
92	>	uint32 RAMSize;                 // Size of RAM
93	>	uint32 ROMBaseMac;              // ROM base (Mac address space)
94	>	uint8 *ROMBaseHost;             // ROM base (host address space)
95	>	uint32 ROMSize;                 // Size of ROM
96		#endif
97
98
67	–	// Constants
68	–	const char ROM_FILE_NAME[] = "ROM";
69	–
70	–
99		// CPU and FPU type, addressing mode
100		int CPUType;
101		bool CPUIs68060;
#	Line 76 | Line 104 | bool TwentyFourBitAddressing;
104
105
106		// Global variables
107	<	static char *x_display_name = NULL;                                     // X11 display name
107	>	char *x_display_name = NULL;                                            // X11 display name
108		Display *x_display = NULL;                                                      // X11 display handle
109
110	+	static int zero_fd = -1;                                                        // FD of /dev/zero
111	+	static bool lm_area_mapped = false;                                     // Flag: Low Memory area mmap()ped
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	+	uint32 ScratchMem = NULL;                       // Scratch memory for Mac ROM writes
138	+	#endif
139	+
140	+	static struct sigaction timer_sa;       // sigaction used for timer
141
142		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
143		#define SIG_TIMER SIGRTMIN
144	<	static struct sigaction timer_sa;                                       // sigaction used for timer
96	<	static timer_t timer;                                                           // 60Hz timer
144	>	static timer_t timer;                           // 60Hz timer
145		#endif
146
147	<	#if ENABLE_MON
148	<	static struct sigaction sigint_sa;                                      // sigaction for SIGINT handler
147	>	#ifdef ENABLE_MON
148	>	static struct sigaction sigint_sa;      // sigaction for SIGINT handler
149		static void sigint_handler(...);
150		#endif
151
152	+	#ifdef USE_MAPPED_MEMORY
153	+	extern char *address_space, *good_address_map;
154	+	#endif
155	+
156
157		// Prototypes
158		static void *xpram_func(void *arg);
159		static void *tick_func(void *arg);
160		static void one_tick(...);
161	+	#if !EMULATED_68K
162	+	static void sigirq_handler(int sig, int code, struct sigcontext *scp);
163	+	static void sigill_handler(int sig, int code, struct sigcontext *scp);
164	+	extern "C" void EmulOpTrampoline(void);
165	+	#endif
166
167
168		/*
#	Line 132 | Line 189 | char *strdup(const char *s)
189
190		int main(int argc, char **argv)
191		{
192	+	char str[256];
193	+
194		// Initialize variables
195		RAMBaseHost = NULL;
196		ROMBaseHost = NULL;
#	Line 161 | Line 220 | int main(int argc, char **argv)
220		QuitEmulator();
221		}
222
223	<	#if ENABLE_XF86_DGA && !ENABLE_MON
223	>	#if defined(ENABLE_XF86_DGA) && !defined(ENABLE_MON)
224		// Fork out, so we can return from fullscreen mode when things get ugly
225		XF86DGAForkApp(DefaultScreen(x_display));
226		#endif
227
228	<	#if ENABLE_GTK
228	>	#ifdef ENABLE_GTK
229		// Init GTK
230		gtk_set_locale();
231		gtk_init(&argc, &argv);
#	Line 183 | Line 242 | int main(int argc, char **argv)
242		if (!PrefsEditor())
243		QuitEmulator();
244
245	+	// Open /dev/zero
246	+	zero_fd = open("/dev/zero", O_RDWR);
247	+	if (zero_fd < 0) {
248	+	sprintf(str, GetString(STR_NO_DEV_ZERO_ERR), strerror(errno));
249	+	ErrorAlert(str);
250	+	QuitEmulator();
251	+	}
252	+
253		// Read RAM size
254		RAMSize = PrefsFindInt32("ramsize") & 0xfff00000;       // Round down to 1MB boundary
255		if (RAMSize < 1024*1024) {
#	Line 190 | Line 257 | int main(int argc, char **argv)
257		RAMSize = 1024*1024;
258		}
259
260	+	#if REAL_ADDRESSING
261	+	// Create Low Memory area (0x0000..0x2000)
262	+	if (mmap((char *)0x0000, 0x2000, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) == (void *)-1) {
263	+	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
264	+	ErrorAlert(str);
265	+	QuitEmulator();
266	+	}
267	+	lm_area_mapped = true;
268	+	#endif
269	+
270	+	#if !EMULATED_68K
271	+	// Allocate scratch memory
272	+	ScratchMem = (uint32)malloc(SCRATCH_MEM_SIZE);
273	+	if (ScratchMem == NULL) {
274	+	ErrorAlert(GetString(STR_NO_MEM_ERR));
275	+	QuitEmulator();
276	+	}
277	+	ScratchMem += SCRATCH_MEM_SIZE/2;       // ScratchMem points to middle of block
278	+	#endif
279	+
280		// Create areas for Mac RAM and ROM
281	<	#ifdef USE_MAPPED_MEMORY
282	<	int fd = open("/dev/zero", O_RDWR);
283	<	good_address_map = (char *)mmap(NULL, 1<<24, PROT_READ, MAP_PRIVATE, fd, 0);
197	<	address_space = (char *)mmap(NULL, 1<<24, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
281	>	#if defined(USE_MAPPED_MEMORY)
282	>	good_address_map = (char *)mmap(NULL, 1<<24, PROT_READ, MAP_PRIVATE, zero_fd, 0);
283	>	address_space = (char *)mmap(NULL, 1<<24, PROT_READ | PROT_WRITE, MAP_PRIVATE, zero_fd, 0);
284		if ((int)address_space < 0 || (int)good_address_map < 0) {
285		ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
286		QuitEmulator();
287		}
288	<	RAMBaseHost = (uint8 *)mmap(address_space, RAMSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, fd, 0);
289	<	ROMBaseHost = (uint8 *)mmap(address_space + 0x00400000, 0x80000, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, fd, 0);
204	<	close(fd);
288	>	RAMBaseHost = (uint8 *)mmap(address_space, RAMSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, zero_fd, 0);
289	>	ROMBaseHost = (uint8 *)mmap(address_space + 0x00400000, 0x80000, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, zero_fd, 0);
290		char *nam = tmpnam(NULL);
291		int good_address_fd = open(nam, O_CREAT | O_RDWR, 0600);
292		char buffer[4096];
#	Line 216 | Line 301 | int main(int argc, char **argv)
301		RAMBaseHost = new uint8[RAMSize];
302		ROMBaseHost = new uint8[0x100000];
303		#endif
304	+	#if REAL_ADDRESSING && !EMULATED_68K
305	+	RAMBaseMac = (uint32)RAMBaseHost;
306	+	ROMBaseMac = (uint32)ROMBaseHost;
307	+	#endif
308	+	D(bug("Mac RAM starts at %p (%08x)\n", RAMBaseHost, RAMBaseMac));
309	+	D(bug("Mac ROM starts at %p (%08x)\n", ROMBaseHost, ROMBaseMac));
310
311		// Get rom file path from preferences
312		const char *rom_path = PrefsFindString("rom");
#	Line 240 | Line 331 | int main(int argc, char **argv)
331		QuitEmulator();
332		}
333
334	+	#if !EMULATED_68K
335	+	// Get CPU model
336	+	int mib[2] = {CTL_HW, HW_MODEL};
337	+	char *model;
338	+	size_t model_len;
339	+	sysctl(mib, 2, NULL, &model_len, NULL, 0);
340	+	model = (char *)malloc(model_len);
341	+	sysctl(mib, 2, model, &model_len, NULL, 0);
342	+	D(bug("Model: %s\n", model));
343	+
344	+	// Set CPU and FPU type
345	+	CPUIs68060 = false;
346	+	if (strstr(model, "020"))
347	+	CPUType = 2;
348	+	else if (strstr(model, "030"))
349	+	CPUType = 3;
350	+	else if (strstr(model, "040"))
351	+	CPUType = 4;
352	+	else if (strstr(model, "060")) {
353	+	CPUType = 4;
354	+	CPUIs68060 = true;
355	+	} else {
356	+	printf("WARNING: Cannot detect CPU type, assuming 68020\n");
357	+	CPUType = 2;
358	+	}
359	+	FPUType = 0;    //!!
360	+	TwentyFourBitAddressing = false;
361	+	#endif
362	+
363		// Initialize everything
364		if (!InitAll())
365		QuitEmulator();
366	+	D(bug("Initialization complete\n"));
367
368	<	// Start XPRAM watchdog thread
369	<	xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
368	>	#ifdef HAVE_PTHREADS
369	>	// Get handle of main thread
370	>	emul_thread = pthread_self();
371	>	#endif
372	>
373	>	#if !EMULATED_68K
374	>	// (Virtual) supervisor mode, disable interrupts
375	>	EmulatedSR = 0x2700;
376	>
377	>	// Create and install stack for signal handlers
378	>	sig_stack = malloc(SIG_STACK_SIZE);
379	>	D(bug("Signal stack at %p\n", sig_stack));
380	>	if (sig_stack == NULL) {
381	>	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
382	>	QuitEmulator();
383	>	}
384	>	stack_t new_stack;
385	>	new_stack.ss_sp = sig_stack;
386	>	new_stack.ss_flags = 0;
387	>	new_stack.ss_size = SIG_STACK_SIZE;
388	>	if (sigaltstack(&new_stack, NULL) < 0) {
389	>	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
390	>	ErrorAlert(str);
391	>	QuitEmulator();
392	>	}
393	>
394	>	// Install SIGILL handler for emulating privileged instructions and
395	>	// executing A-Trap and EMUL_OP opcodes
396	>	sigemptyset(&sigill_sa.sa_mask);        // Block virtual 68k interrupts during SIGILL handling
397	>	sigaddset(&sigill_sa.sa_mask, SIG_IRQ);
398	>	sigaddset(&sigill_sa.sa_mask, SIGALRM);
399	>	sigill_sa.sa_handler = (void (*)(int))sigill_handler;
400	>	sigill_sa.sa_flags = SA_ONSTACK;
401	>	if (sigaction(SIGILL, &sigill_sa, NULL) < 0) {
402	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno));
403	>	ErrorAlert(str);
404	>	QuitEmulator();
405	>	}
406	>
407	>	// Install virtual 68k interrupt signal handler
408	>	sigemptyset(&sigirq_sa.sa_mask);
409	>	sigaddset(&sigirq_sa.sa_mask, SIGALRM);
410	>	sigirq_sa.sa_handler = (void (*)(int))sigirq_handler;
411	>	sigirq_sa.sa_flags = SA_ONSTACK | SA_RESTART;
412	>	if (sigaction(SIG_IRQ, &sigirq_sa, NULL) < 0) {
413	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_IRQ", strerror(errno));
414	>	ErrorAlert(str);
415	>	QuitEmulator();
416	>	}
417	>	#endif
418	>
419	>	#ifdef ENABLE_MON
420	>	// Setup SIGINT handler to enter mon
421	>	sigemptyset(&sigint_sa.sa_mask);
422	>	sigint_sa.sa_handler = sigint_handler;
423	>	sigint_sa.sa_flags = 0;
424	>	sigaction(SIGINT, &sigint_sa, NULL);
425	>	#endif
426
427		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
428	<	// Start 60Hz timer
428	>
429	>	// POSIX.4 timers and real-time signals available, start 60Hz timer
430		sigemptyset(&timer_sa.sa_mask);
253	–	timer_sa.sa_flags = SA_SIGINFO | SA_RESTART;
431		timer_sa.sa_sigaction = one_tick;
432	+	timer_sa.sa_flags = SA_SIGINFO | SA_RESTART;
433		if (sigaction(SIG_TIMER, &timer_sa, NULL) < 0) {
434	<	printf("FATAL: cannot set up timer signal handler\n");
434	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_TIMER", strerror(errno));
435	>	ErrorAlert(str);
436		QuitEmulator();
437		}
438		struct sigevent timer_event;
439		timer_event.sigev_notify = SIGEV_SIGNAL;
440		timer_event.sigev_signo = SIG_TIMER;
441		if (timer_create(CLOCK_REALTIME, &timer_event, &timer) < 0) {
442	<	printf("FATAL: cannot create timer\n");
442	>	sprintf(str, GetString(STR_TIMER_CREATE_ERR), strerror(errno));
443	>	ErrorAlert(str);
444		QuitEmulator();
445		}
446		struct itimerspec req;
#	Line 269 | Line 449 | int main(int argc, char **argv)
449		req.it_interval.tv_sec = 0;
450		req.it_interval.tv_nsec = 16625000;
451		if (timer_settime(timer, 0, &req, NULL) < 0) {
452	<	printf("FATAL: cannot start timer\n");
452	>	sprintf(str, GetString(STR_TIMER_SETTIME_ERR), strerror(errno));
453	>	ErrorAlert(str);
454		QuitEmulator();
455		}
456	+	D(bug("60Hz timer started\n"));
457
458	<	#else
458	>	#elif defined(HAVE_PTHREADS)
459
460	<	// Start 60Hz thread
460	>	// POSIX threads available, start 60Hz thread
461		pthread_attr_init(&tick_thread_attr);
462		#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
463		if (geteuid() == 0) {
#	Line 288 | Line 470 | int main(int argc, char **argv)
470		#endif
471		tick_thread_active = (pthread_create(&tick_thread, &tick_thread_attr, tick_func, NULL) == 0);
472		if (!tick_thread_active) {
473	<	printf("FATAL: cannot create tick thread\n");
473	>	sprintf(str, GetString(STR_TICK_THREAD_ERR), strerror(errno));
474	>	ErrorAlert(str);
475	>	QuitEmulator();
476	>	}
477	>	D(bug("60Hz thread started\n"));
478	>
479	>	#else
480	>
481	>	// Start 60Hz timer
482	>	sigemptyset(&timer_sa.sa_mask);         // Block virtual 68k interrupts during SIGARLM handling
483	>	sigaddset(&timer_sa.sa_mask, SIG_IRQ);
484	>	timer_sa.sa_handler = one_tick;
485	>	timer_sa.sa_flags = SA_ONSTACK | SA_RESTART;
486	>	if (sigaction(SIGALRM, &timer_sa, NULL) < 0) {
487	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGALRM", strerror(errno));
488	>	ErrorAlert(str);
489		QuitEmulator();
490		}
491	+	struct itimerval req;
492	+	req.it_interval.tv_sec = req.it_value.tv_sec = 0;
493	+	req.it_interval.tv_usec = req.it_value.tv_usec = 16625;
494	+	setitimer(ITIMER_REAL, &req, NULL);
495	+
496		#endif
497
498	<	#if ENABLE_MON
499	<	// Setup SIGINT handler to enter mon
500	<	sigemptyset(&sigint_sa.sa_mask);
501	<	sigint_sa.sa_flags = 0;
502	<	sigint_sa.sa_handler = sigint_handler;
301	<	sigaction(SIGINT, &sigint_sa, NULL);
498	>	#ifdef HAVE_PTHREADS
499	>	// Start XPRAM watchdog thread
500	>	memcpy(last_xpram, XPRAM, 256);
501	>	xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
502	>	D(bug("XPRAM thread started\n"));
503		#endif
504
505		// Start 68k and jump to ROM boot routine
506	+	D(bug("Starting emulation...\n"));
507		Start680x0();
508
509		QuitEmulator();
#	Line 315 | Line 517 | int main(int argc, char **argv)
517
518		void QuitEmulator(void)
519		{
520	+	D(bug("QuitEmulator\n"));
521	+
522	+	#if EMULATED_68K
523		// Exit 680x0 emulation
524		Exit680x0();
525	+	#endif
526
527		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
528		// Stop 60Hz timer
529		timer_delete(timer);
530	<	#else
530	>	#elif defined(HAVE_PTHREADS)
531		// Stop 60Hz thread
532		if (tick_thread_active) {
533		tick_thread_cancel = true;
#	Line 330 | Line 536 | void QuitEmulator(void)
536		#endif
537		pthread_join(tick_thread, NULL);
538		}
539	+	#else
540	+	struct itimerval req;
541	+	req.it_interval.tv_sec = req.it_value.tv_sec = 0;
542	+	req.it_interval.tv_usec = req.it_value.tv_usec = 0;
543	+	setitimer(ITIMER_REAL, &req, NULL);
544		#endif
545
546	+	#ifdef HAVE_PTHREADS
547		// Stop XPRAM watchdog thread
548		if (xpram_thread_active) {
549		xpram_thread_cancel = true;
#	Line 340 | Line 552 | void QuitEmulator(void)
552		#endif
553		pthread_join(xpram_thread, NULL);
554		}
555	+	#endif
556
557		// Deinitialize everything
558		ExitAll();
#	Line 350 | Line 563 | void QuitEmulator(void)
563		// Delete RAM area
564		delete[] RAMBaseHost;
565
566	+	#if !EMULATED_68K
567	+	// Delete scratch memory area
568	+	if (ScratchMem)
569	+	free((void *)(ScratchMem - SCRATCH_MEM_SIZE/2));
570	+	#endif
571	+
572	+	#if REAL_ADDRESSING
573	+	// Delete Low Memory area
574	+	if (lm_area_mapped)
575	+	munmap((char *)0x0000, 0x2000);
576	+	#endif
577	+
578	+	// Close /dev/zero
579	+	if (zero_fd > 0)
580	+	close(zero_fd);
581	+
582		// Exit system routines
583		SysExit();
584
#	Line 369 | Line 598 | void QuitEmulator(void)
598		*  or a dynamically recompiling emulator)
599		*/
600
372	–	#if EMULATED_68K
601		void FlushCodeCache(void *start, uint32 size)
602		{
603	<	}
603	>	#if !EMULATED_68K && defined(__NetBSD__)
604	>	m68k_sync_icache(start, size);
605		#endif
606	+	}
607
608
609		/*
610		*  SIGINT handler, enters mon
611		*/
612
613	<	#if ENABLE_MON
384	<	extern void m68k_dumpstate(uaecptr *nextpc);
613	>	#ifdef ENABLE_MON
614		static void sigint_handler(...)
615		{
616	+	#if EMULATED_68K
617		uaecptr nextpc;
618	+	extern void m68k_dumpstate(uaecptr *nextpc);
619		m68k_dumpstate(&nextpc);
620	+	#else
621		char *arg[2] = {"rmon", NULL};
622		mon(1, arg);
623		QuitEmulator();
624	+	#endif
625		}
626		#endif
627
#	Line 399 | Line 632 | static void sigint_handler(...)
632
633		uint32 InterruptFlags = 0;
634
635	+	#if EMULATED_68K
636		void SetInterruptFlag(uint32 flag)
637		{
638	+	#ifdef HAVE_PTHREADS
639		pthread_mutex_lock(&intflag_lock);
640		InterruptFlags |= flag;
641		pthread_mutex_unlock(&intflag_lock);
642	+	#else
643	+	InterruptFlags |= flag;         // Pray that this is an atomic operation...
644	+	#endif
645		}
646
647		void ClearInterruptFlag(uint32 flag)
648		{
649	+	#ifdef HAVE_PTHREADS
650		pthread_mutex_lock(&intflag_lock);
651		InterruptFlags &= ~flag;
652		pthread_mutex_unlock(&intflag_lock);
653	+	#else
654	+	InterruptFlags &= ~flag;
655	+	#endif
656		}
657	+	#endif
658	+
659	+	#if !EMULATED_68K
660	+	void TriggerInterrupt(void)
661	+	{
662	+	#if defined(HAVE_PTHREADS)
663	+	pthread_kill(emul_thread, SIG_IRQ);
664	+	#else
665	+	raise(SIG_IRQ);
666	+	#endif
667	+	}
668	+	#endif
669	+
670	+
671	+	/*
672	+	*  XPRAM watchdog thread (saves XPRAM every minute)
673	+	*/
674	+
675	+	static void xpram_watchdog(void)
676	+	{
677	+	if (memcmp(last_xpram, XPRAM, 256)) {
678	+	memcpy(last_xpram, XPRAM, 256);
679	+	SaveXPRAM();
680	+	}
681	+	}
682	+
683	+	#ifdef HAVE_PTHREADS
684	+	static void *xpram_func(void *arg)
685	+	{
686	+	while (!xpram_thread_cancel) {
687	+	for (int i=0; i<60 && !xpram_thread_cancel; i++) {
688	+	#ifdef HAVE_NANOSLEEP
689	+	struct timespec req = {1, 0};
690	+	nanosleep(&req, NULL);
691	+	#else
692	+	usleep(1000000);
693	+	#endif
694	+	}
695	+	xpram_watchdog();
696	+	}
697	+	return NULL;
698	+	}
699	+	#endif
700
701
702		/*
703		*  60Hz thread (really 60.15Hz)
704		*/
705
706	+	static void one_second(void)
707	+	{
708	+	// Pseudo Mac 1Hz interrupt, update local time
709	+	WriteMacInt32(0x20c, TimerDateTime());
710	+
711	+	SetInterruptFlag(INTFLAG_60HZ);
712	+	TriggerInterrupt();
713	+
714	+	#ifndef HAVE_PTHREADS
715	+	static int second_counter = 0;
716	+	if (++second_counter > 60) {
717	+	second_counter = 0;
718	+	xpram_watchdog();
719	+	}
720	+	#endif
721	+	}
722	+
723		static void one_tick(...)
724		{
725		static int tick_counter = 0;
424	–
425	–	// Pseudo Mac 1Hz interrupt, update local time
726		if (++tick_counter > 60) {
727		tick_counter = 0;
728	<	WriteMacInt32(0x20c, TimerDateTime());
728	>	one_second();
729		}
730
731	+	#ifndef HAVE_PTHREADS
732	+	// No threads available, perform video refresh from here
733	+	VideoRefresh();
734	+	#endif
735	+
736		// Trigger 60Hz interrupt
737		if (ROMVersion != ROM_VERSION_CLASSIC || HasMacStarted()) {
738		SetInterruptFlag(INTFLAG_60HZ);
#	Line 435 | Line 740 | static void one_tick(...)
740		}
741		}
742
743	+	#ifdef HAVE_PTHREADS
744		static void *tick_func(void *arg)
745		{
746		while (!tick_thread_cancel) {
#	Line 452 | Line 758 | static void *tick_func(void *arg)
758		}
759		return NULL;
760		}
761	+	#endif
762
763
764	+	#if !EMULATED_68K
765		/*
766	<	*  XPRAM watchdog thread (saves XPRAM every minute)
766	>	*  Virtual 68k interrupt handler
767		*/
768
769	<	void *xpram_func(void *arg)
769	>	static void sigirq_handler(int sig, int code, struct sigcontext *scp)
770		{
771	<	uint8 last_xpram[256];
772	<	memcpy(last_xpram, XPRAM, 256);
771	>	// Interrupts disabled? Then do nothing
772	>	if (EmulatedSR & 0x0700)
773	>	return;
774
775	<	while (!xpram_thread_cancel) {
776	<	for (int i=0; i<60 && !xpram_thread_cancel; i++) {
777	<	#ifdef HAVE_NANOSLEEP
778	<	struct timespec req = {1, 0};
779	<	nanosleep(&req, NULL);
780	<	#else
781	<	usleep(1000000);
782	<	#endif
775	>	struct sigstate *state = (struct sigstate *)scp->sc_ap;
776	>	M68kRegisters *regs = (M68kRegisters *)&state->ss_frame;
777	>
778	>	// Set up interrupt frame on stack
779	>	uint32 a7 = regs->a[7];
780	>	a7 -= 2;
781	>	WriteMacInt16(a7, 0x64);
782	>	a7 -= 4;
783	>	WriteMacInt32(a7, scp->sc_pc);
784	>	a7 -= 2;
785	>	WriteMacInt16(a7, scp->sc_ps | EmulatedSR);
786	>	scp->sc_sp = regs->a[7] = a7;
787	>
788	>	// Set interrupt level
789	>	EmulatedSR |= 0x2100;
790	>
791	>	// Jump to MacOS interrupt handler on return
792	>	scp->sc_pc = ReadMacInt32(0x64);
793	>	}
794	>
795	>
796	>	/*
797	>	*  SIGILL handler, for emulation of privileged instructions and executing
798	>	*  A-Trap and EMUL_OP opcodes
799	>	*/
800	>
801	>	static void sigill_handler(int sig, int code, struct sigcontext *scp)
802	>	{
803	>	struct sigstate *state = (struct sigstate *)scp->sc_ap;
804	>	uint16 *pc = (uint16 *)scp->sc_pc;
805	>	uint16 opcode = *pc;
806	>	M68kRegisters *regs = (M68kRegisters *)&state->ss_frame;
807	>
808	>	#define INC_PC(n) scp->sc_pc += (n)
809	>
810	>	#define GET_SR (scp->sc_ps | EmulatedSR)
811	>
812	>	#define STORE_SR(v) \
813	>	scp->sc_ps = (v) & 0xff; \
814	>	EmulatedSR = (v) & 0x2700; \
815	>	if (((v) & 0x0700) == 0 && InterruptFlags) \
816	>	TriggerInterrupt();
817	>
818	>	//printf("opcode %04x at %p, sr %04x, emul_sr %04x\n", opcode, pc, scp->sc_ps, EmulatedSR);
819	>
820	>	if ((opcode & 0xf000) == 0xa000) {
821	>
822	>	// A-Line instruction, set up A-Line trap frame on stack
823	>	uint32 a7 = regs->a[7];
824	>	a7 -= 2;
825	>	WriteMacInt16(a7, 0x28);
826	>	a7 -= 4;
827	>	WriteMacInt32(a7, (uint32)pc);
828	>	a7 -= 2;
829	>	WriteMacInt16(a7, GET_SR);
830	>	scp->sc_sp = regs->a[7] = a7;
831	>
832	>	// Jump to MacOS A-Line handler on return
833	>	scp->sc_pc = ReadMacInt32(0x28);
834	>
835	>	} else if ((opcode & 0xff00) == 0x7100) {
836	>
837	>	// Extended opcode, push registers on user stack
838	>	uint32 a7 = regs->a[7];
839	>	a7 -= 4;
840	>	WriteMacInt32(a7, (uint32)pc);
841	>	a7 -= 2;
842	>	WriteMacInt16(a7, scp->sc_ps);
843	>	for (int i=7; i>=0; i--) {
844	>	a7 -= 4;
845	>	WriteMacInt32(a7, regs->a[i]);
846	>	}
847	>	for (int i=7; i>=0; i--) {
848	>	a7 -= 4;
849	>	WriteMacInt32(a7, regs->d[i]);
850	>	}
851	>	scp->sc_sp = regs->a[7] = a7;
852	>
853	>	// Jump to EmulOp trampoline code on return
854	>	scp->sc_pc = (uint32)EmulOpTrampoline;
855	>
856	>	} else switch (opcode) {        // Emulate privileged instructions
857	>
858	>	case 0x40e7:    // move sr,-(sp)
859	>	regs->a[7] -= 2;
860	>	WriteMacInt16(regs->a[7], GET_SR);
861	>	scp->sc_sp = regs->a[7];
862	>	INC_PC(2);
863	>	break;
864	>
865	>	case 0x46df: {  // move (sp)+,sr
866	>	uint16 sr = ReadMacInt16(regs->a[7]);
867	>	STORE_SR(sr);
868	>	regs->a[7] += 2;
869	>	scp->sc_sp = regs->a[7];
870	>	INC_PC(2);
871	>	break;
872	>	}
873	>
874	>	case 0x007c: {  // ori #xxxx,sr
875	>	uint16 sr = GET_SR | pc[1];
876	>	scp->sc_ps = sr & 0xff;         // oring bits into the sr can't enable interrupts, so we don't need to call STORE_SR
877	>	EmulatedSR = sr & 0x2700;
878	>	INC_PC(4);
879	>	break;
880	>	}
881	>
882	>	case 0x027c: {  // andi #xxxx,sr
883	>	uint16 sr = GET_SR & pc[1];
884	>	STORE_SR(sr);
885	>	INC_PC(4);
886	>	break;
887		}
888	<	if (memcmp(last_xpram, XPRAM, 256)) {
889	<	memcpy(last_xpram, XPRAM, 256);
890	<	SaveXPRAM();
888	>
889	>	case 0x46fc:    // move #xxxx,sr
890	>	STORE_SR(pc[1]);
891	>	INC_PC(4);
892	>	break;
893	>
894	>	case 0x46ef: {  // move (xxxx,sp),sr
895	>	uint16 sr = ReadMacInt16(regs->a[7] + (int32)(int16)pc[1]);
896	>	STORE_SR(sr);
897	>	INC_PC(4);
898	>	break;
899	>	}
900	>
901	>	case 0x46d8:    // move (a0)+,sr
902	>	case 0x46d9: {  // move (a1)+,sr
903	>	uint16 sr = ReadMacInt16(regs->a[opcode & 7]);
904	>	STORE_SR(sr);
905	>	regs->a[opcode & 7] += 2;
906	>	INC_PC(2);
907	>	break;
908	>	}
909	>
910	>	case 0x40f8:    // move sr,xxxx.w
911	>	WriteMacInt16(pc[1], GET_SR);
912	>	INC_PC(4);
913	>	break;
914	>
915	>	case 0x40d0:    // move sr,(a0)
916	>	case 0x40d1:    // move sr,(a1)
917	>	case 0x40d2:    // move sr,(a2)
918	>	case 0x40d3:    // move sr,(a3)
919	>	case 0x40d4:    // move sr,(a4)
920	>	case 0x40d5:    // move sr,(a5)
921	>	case 0x40d6:    // move sr,(a6)
922	>	case 0x40d7:    // move sr,(sp)
923	>	WriteMacInt16(regs->a[opcode & 7], GET_SR);
924	>	INC_PC(2);
925	>	break;
926	>
927	>	case 0x40c0:    // move sr,d0
928	>	case 0x40c1:    // move sr,d1
929	>	case 0x40c2:    // move sr,d2
930	>	case 0x40c3:    // move sr,d3
931	>	case 0x40c4:    // move sr,d4
932	>	case 0x40c5:    // move sr,d5
933	>	case 0x40c6:    // move sr,d6
934	>	case 0x40c7:    // move sr,d7
935	>	regs->d[opcode & 7] = GET_SR;
936	>	INC_PC(2);
937	>	break;
938	>
939	>	case 0x46c0:    // move d0,sr
940	>	case 0x46c1:    // move d1,sr
941	>	case 0x46c2:    // move d2,sr
942	>	case 0x46c3:    // move d3,sr
943	>	case 0x46c4:    // move d4,sr
944	>	case 0x46c5:    // move d5,sr
945	>	case 0x46c6:    // move d6,sr
946	>	case 0x46c7: {  // move d7,sr
947	>	uint16 sr = regs->d[opcode & 7];
948	>	STORE_SR(sr);
949	>	INC_PC(2);
950	>	break;
951	>	}
952	>
953	>	case 0xf327:    // fsave -(sp)
954	>	goto ill;       //!!
955	>
956	>	case 0xf35f:    // frestore (sp)+
957	>	goto ill;       //!!
958	>
959	>	case 0x4e73: {  // rte (only handles format 0)
960	>	uint32 a7 = regs->a[7];
961	>	uint16 sr = ReadMacInt16(a7);
962	>	a7 += 2;
963	>	scp->sc_ps = sr & 0xff;
964	>	EmulatedSR = sr & 0x2700;
965	>	scp->sc_pc = ReadMacInt32(a7);
966	>	a7 += 6;
967	>	scp->sc_sp = regs->a[7] = a7;
968	>	break;
969		}
970	+
971	+	case 0x4e7a:    // movec cr,x
972	+	switch (pc[1]) {
973	+	case 0x8801:    // movec vbr,a0
974	+	regs->a[0] = 0;
975	+	break;
976	+	case 0x9801:    // movec vbr,a1
977	+	regs->a[1] = 0;
978	+	break;
979	+	case 0x0002:    // movec cacr,d0
980	+	regs->d[0] = 0x3111;
981	+	break;
982	+	case 0x1002:    // movec cacr,d1
983	+	regs->d[1] = 0x3111;
984	+	break;
985	+	case 0x0003:    // movec tc,d0
986	+	regs->d[0] = 0;
987	+	break;
988	+	case 0x1003:    // movec tc,d1
989	+	regs->d[1] = 0;
990	+	break;
991	+	default:
992	+	goto ill;
993	+	}
994	+	INC_PC(4);
995	+	break;
996	+
997	+	case 0x4e7b:    // movec x,cr
998	+	switch (pc[1]) {
999	+	case 0x0801:    // movec d0,vbr
1000	+	break;
1001	+	case 0x0002:    // movec d0,cacr
1002	+	case 0x1002:    // movec d1,cacr
1003	+	FlushCodeCache(NULL, 0);
1004	+	break;
1005	+	default:
1006	+	goto ill;
1007	+	}
1008	+	INC_PC(4);
1009	+	break;
1010	+
1011	+	case 0xf478:    // cpusha dc
1012	+	case 0xf4f8:    // cpusha dc/ic
1013	+	FlushCodeCache(NULL, 0);
1014	+	INC_PC(2);
1015	+	break;
1016	+
1017	+	default:
1018	+	ill:            printf("SIGILL num %d, code %d\n", sig, code);
1019	+	printf(" context %p:\n", scp);
1020	+	printf("  onstack %08x\n", scp->sc_onstack);
1021	+	printf("  sp %08x\n", scp->sc_sp);
1022	+	printf("  fp %08x\n", scp->sc_fp);
1023	+	printf("  pc %08x\n", scp->sc_pc);
1024	+	printf("   opcode %04x\n", opcode);
1025	+	printf("  sr %08x\n", scp->sc_ps);
1026	+	printf(" state %p:\n", state);
1027	+	printf("  flags %d\n", state->ss_flags);
1028	+	for (int i=0; i<8; i++)
1029	+	printf("  d%d %08x\n", i, state->ss_frame.f_regs[i]);
1030	+	for (int i=0; i<8; i++)
1031	+	printf("  a%d %08x\n", i, state->ss_frame.f_regs[i+8]);
1032	+
1033	+	#ifdef ENABLE_MON
1034	+	char *arg[2] = {"rmon", NULL};
1035	+	mon(1, arg);
1036	+	#endif
1037	+	QuitEmulator();
1038	+	break;
1039		}
480	–	return NULL;
1040		}
1041	+	#endif
1042
1043
1044		/*
1045		*  Display alert
1046		*/
1047
1048	<	#if ENABLE_GTK
1048	>	#ifdef ENABLE_GTK
1049		static void dl_destroyed(void)
1050		{
1051		gtk_main_quit();
#	Line 530 | Line 1090 | void display_alert(int title_id, int pre
1090
1091		void ErrorAlert(const char *text)
1092		{
1093	<	#if ENABLE_GTK
1093	>	#ifdef ENABLE_GTK
1094		if (PrefsFindBool("nogui") || x_display == NULL) {
1095		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
1096		return;
#	Line 549 | Line 1109 | void ErrorAlert(const char *text)
1109
1110		void WarningAlert(const char *text)
1111		{
1112	<	#if ENABLE_GTK
1112	>	#ifdef ENABLE_GTK
1113		if (PrefsFindBool("nogui") || x_display == NULL) {
1114		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
1115		return;

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