[ViewVC] Diff of: cebix/BasiliskII/src/Unix/main

Comparing BasiliskII/src/Unix/main_unix.cpp (file contents):
Revision 1.6 by cebix, 1999-10-27T16:59:46Z vs.
Revision 1.17 by cebix, 2000-07-24T15:17:07Z

#	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
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
51	–	#if ENABLE_XF86_DGA
52	–	#include <X11/Xlib.h>
53	–	#include <X11/Xutil.h>
54	–	#include <X11/extensions/xf86dga.h>
55	–	#endif
87
88	<	#if ENABLE_MON
89	<	#include "mon.h"
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
62	–	// Constants
63	–	const char ROM_FILE_NAME[] = "ROM";
64	–
65	–
99		// CPU and FPU type, addressing mode
100		int CPUType;
101		bool CPUIs68060;
#	Line 71 \| 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 uint8 last_xpram[256]; // Buffer for monitoring XPRAM changes
112	+
113	+	#ifdef HAVE_PTHREADS
114	+	static pthread_t emul_thread; // Handle of MacOS emulation thread (main thread)
115	+
116		static bool xpram_thread_active = false; // Flag: XPRAM watchdog installed
117		static volatile bool xpram_thread_cancel = false; // Flag: Cancel XPRAM thread
118		static pthread_t xpram_thread; // XPRAM watchdog
#	Line 83 \| Line 122 \| static volatile bool tick_thread_cancel
122		static pthread_t tick_thread; // 60Hz thread
123		static pthread_attr_t tick_thread_attr; // 60Hz thread attributes
124
125	+	#if EMULATED_68K
126		static pthread_mutex_t intflag_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect InterruptFlags
127	+	#endif
128	+	#endif
129	+
130	+	#if !EMULATED_68K
131	+	#define SIG_IRQ SIGUSR1
132	+	static struct sigaction sigirq_sa; // Virtual 68k interrupt signal
133	+	static struct sigaction sigill_sa; // Illegal instruction
134	+	static void *sig_stack = NULL; // Stack for signal handlers
135	+	uint16 EmulatedSR; // Emulated bits of SR (supervisor bit and interrupt mask)
136	+	uint32 ScratchMem = NULL; // Scratch memory for Mac ROM writes
137	+	#endif
138	+
139	+	static struct sigaction timer_sa; // sigaction used for timer
140
141		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
142		#define SIG_TIMER SIGRTMIN
143	<	static struct sigaction timer_sa; // sigaction used for timer
91	<	static timer_t timer; // 60Hz timer
143	>	static timer_t timer; // 60Hz timer
144		#endif
145
146	<	#if ENABLE_MON
147	<	static struct sigaction sigint_sa; // sigaction for SIGINT handler
146	>	#ifdef ENABLE_MON
147	>	static struct sigaction sigint_sa; // sigaction for SIGINT handler
148		static void sigint_handler(...);
149		#endif
150
151	+	#if REAL_ADDRESSING
152	+	static bool lm_area_mapped = false; // Flag: Low Memory area mmap()ped
153	+	#endif
154	+
155	+	#ifdef USE_MAPPED_MEMORY
156	+	extern char address_space, good_address_map;
157	+	#endif
158	+
159
160		// Prototypes
161		static void xpram_func(void arg);
162		static void tick_func(void arg);
163		static void one_tick(...);
164	+	#if !EMULATED_68K
165	+	static void sigirq_handler(int sig, int code, struct sigcontext *scp);
166	+	static void sigill_handler(int sig, int code, struct sigcontext *scp);
167	+	extern "C" void EmulOpTrampoline(void);
168	+	#endif
169
170
171		/*
#	Line 127 \| Line 192 \| *char strdup(const char s)*
192
193		int main(int argc, char **argv)
194		{
195	+	char str[256];
196	+
197		// Initialize variables
198		RAMBaseHost = NULL;
199		ROMBaseHost = NULL;
#	Line 156 \| Line 223 \| int main(int argc, char argv)**
223		QuitEmulator();
224		}
225
226	<	#if ENABLE_XF86_DGA
226	>	#if defined(ENABLE_XF86_DGA) && !defined(ENABLE_MON)
227		// Fork out, so we can return from fullscreen mode when things get ugly
228		XF86DGAForkApp(DefaultScreen(x_display));
229		#endif
230
231	<	#if ENABLE_GTK
231	>	#ifdef ENABLE_GTK
232		// Init GTK
233		gtk_set_locale();
234		gtk_init(&argc, &argv);
#	Line 178 \| Line 245 \| int main(int argc, char argv)**
245		if (!PrefsEditor())
246		QuitEmulator();
247
248	<	// Create area for Mac RAM
248	>	// Open /dev/zero
249	>	zero_fd = open("/dev/zero", O_RDWR);
250	>	if (zero_fd < 0) {
251	>	sprintf(str, GetString(STR_NO_DEV_ZERO_ERR), strerror(errno));
252	>	ErrorAlert(str);
253	>	QuitEmulator();
254	>	}
255	>
256	>	// Read RAM size
257		RAMSize = PrefsFindInt32("ramsize") & 0xfff00000; // Round down to 1MB boundary
258		if (RAMSize < 1024*1024) {
259		WarningAlert(GetString(STR_SMALL_RAM_WARN));
260		RAMSize = 1024*1024;
261		}
187	–	RAMBaseHost = new uint8[RAMSize];
262
263	<	// Create area for Mac ROM
264	<	ROMBaseHost = new uint8[0x100000];
263	>	#if REAL_ADDRESSING
264	>	// Create Low Memory area (0x0000..0x2000)
265	>	if (mmap((char )0x0000, 0x2000, PROT_READ \| PROT_WRITE, MAP_FIXED \| MAP_PRIVATE, zero_fd, 0) == (void )-1) {
266	>	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
267	>	ErrorAlert(str);
268	>	QuitEmulator();
269	>	}
270	>	lm_area_mapped = true;
271	>	#endif
272	>
273	>	#if !EMULATED_68K
274	>	// Allocate scratch memory
275	>	ScratchMem = (uint32)malloc(SCRATCH_MEM_SIZE);
276	>	if (ScratchMem == NULL) {
277	>	ErrorAlert(GetString(STR_NO_MEM_ERR));
278	>	QuitEmulator();
279	>	}
280	>	ScratchMem += SCRATCH_MEM_SIZE/2; // ScratchMem points to middle of block
281	>	#endif
282	>
283	>	// Create areas for Mac RAM and ROM
284	>	#if defined(USE_MAPPED_MEMORY)
285	>	good_address_map = (char *)mmap(NULL, 1<<24, PROT_READ, MAP_PRIVATE, zero_fd, 0);
286	>	address_space = (char *)mmap(NULL, 1<<24, PROT_READ \| PROT_WRITE, MAP_PRIVATE, zero_fd, 0);
287	>	if ((int)address_space < 0 \|\| (int)good_address_map < 0) {
288	>	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
289	>	QuitEmulator();
290	>	}
291	>	RAMBaseHost = (uint8 *)mmap(address_space, RAMSize, PROT_READ \| PROT_WRITE, MAP_PRIVATE \| MAP_FIXED, zero_fd, 0);
292	>	ROMBaseHost = (uint8 *)mmap(address_space + 0x00400000, 0x80000, PROT_READ \| PROT_WRITE, MAP_PRIVATE \| MAP_FIXED, zero_fd, 0);
293	>	char *nam = tmpnam(NULL);
294	>	int good_address_fd = open(nam, O_CREAT \| O_RDWR, 0600);
295	>	char buffer[4096];
296	>	memset(buffer, 1, sizeof(buffer));
297	>	write(good_address_fd, buffer, sizeof(buffer));
298	>	unlink(nam);
299	>	for (int i=0; i<RAMSize; i+=4096)
300	>	mmap(good_address_map + i, 4096, PROT_READ, MAP_FIXED \| MAP_PRIVATE, good_address_fd, 0);
301	>	for (int i=0; i<0x80000; i+=4096)
302	>	mmap(good_address_map + i + 0x00400000, 4096, PROT_READ, MAP_FIXED \| MAP_PRIVATE, good_address_fd, 0);
303	>	#else
304	>	RAMBaseHost = (uint8 *)malloc(RAMSize);
305	>	ROMBaseHost = (uint8 *)malloc(0x100000);
306	>	#endif
307	>	if (RAMBaseHost == NULL \|\| ROMBaseHost == NULL) {
308	>	ErrorAlert(GetString(STR_NO_MEM_ERR));
309	>	QuitEmulator();
310	>	}
311	>	#if REAL_ADDRESSING && !EMULATED_68K
312	>	RAMBaseMac = (uint32)RAMBaseHost;
313	>	ROMBaseMac = (uint32)ROMBaseHost;
314	>	#endif
315	>	D(bug("Mac RAM starts at %p (%08x)\n", RAMBaseHost, RAMBaseMac));
316	>	D(bug("Mac ROM starts at %p (%08x)\n", ROMBaseHost, ROMBaseMac));
317
318		// Get rom file path from preferences
319		const char *rom_path = PrefsFindString("rom");
#	Line 212 \| Line 338 \| int main(int argc, char argv)**
338		QuitEmulator();
339		}
340
341	+	#if !EMULATED_68K
342	+	// Get CPU model
343	+	int mib[2] = {CTL_HW, HW_MODEL};
344	+	char *model;
345	+	size_t model_len;
346	+	sysctl(mib, 2, NULL, &model_len, NULL, 0);
347	+	model = (char *)malloc(model_len);
348	+	sysctl(mib, 2, model, &model_len, NULL, 0);
349	+	D(bug("Model: %s\n", model));
350	+
351	+	// Set CPU and FPU type
352	+	CPUIs68060 = false;
353	+	if (strstr(model, "020"))
354	+	CPUType = 2;
355	+	else if (strstr(model, "030"))
356	+	CPUType = 3;
357	+	else if (strstr(model, "040"))
358	+	CPUType = 4;
359	+	else if (strstr(model, "060")) {
360	+	CPUType = 4;
361	+	CPUIs68060 = true;
362	+	} else {
363	+	printf("WARNING: Cannot detect CPU type, assuming 68020\n");
364	+	CPUType = 2;
365	+	}
366	+	FPUType = 0; //!!
367	+	TwentyFourBitAddressing = false;
368	+	#endif
369	+
370		// Initialize everything
371		if (!InitAll())
372		QuitEmulator();
373	+	D(bug("Initialization complete\n"));
374
375	<	// Start XPRAM watchdog thread
376	<	xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
375	>	#ifdef HAVE_PTHREADS
376	>	// Get handle of main thread
377	>	emul_thread = pthread_self();
378	>	#endif
379	>
380	>	#if !EMULATED_68K
381	>	// (Virtual) supervisor mode, disable interrupts
382	>	EmulatedSR = 0x2700;
383	>
384	>	// Create and install stack for signal handlers
385	>	sig_stack = malloc(SIG_STACK_SIZE);
386	>	D(bug("Signal stack at %p\n", sig_stack));
387	>	if (sig_stack == NULL) {
388	>	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
389	>	QuitEmulator();
390	>	}
391	>	stack_t new_stack;
392	>	new_stack.ss_sp = sig_stack;
393	>	new_stack.ss_flags = 0;
394	>	new_stack.ss_size = SIG_STACK_SIZE;
395	>	if (sigaltstack(&new_stack, NULL) < 0) {
396	>	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
397	>	ErrorAlert(str);
398	>	QuitEmulator();
399	>	}
400	>
401	>	// Install SIGILL handler for emulating privileged instructions and
402	>	// executing A-Trap and EMUL_OP opcodes
403	>	sigemptyset(&sigill_sa.sa_mask); // Block virtual 68k interrupts during SIGILL handling
404	>	sigaddset(&sigill_sa.sa_mask, SIG_IRQ);
405	>	sigaddset(&sigill_sa.sa_mask, SIGALRM);
406	>	sigill_sa.sa_handler = (void (*)(int))sigill_handler;
407	>	sigill_sa.sa_flags = SA_ONSTACK;
408	>	if (sigaction(SIGILL, &sigill_sa, NULL) < 0) {
409	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno));
410	>	ErrorAlert(str);
411	>	QuitEmulator();
412	>	}
413	>
414	>	// Install virtual 68k interrupt signal handler
415	>	sigemptyset(&sigirq_sa.sa_mask);
416	>	sigaddset(&sigirq_sa.sa_mask, SIGALRM);
417	>	sigirq_sa.sa_handler = (void (*)(int))sigirq_handler;
418	>	sigirq_sa.sa_flags = SA_ONSTACK \| SA_RESTART;
419	>	if (sigaction(SIG_IRQ, &sigirq_sa, NULL) < 0) {
420	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_IRQ", strerror(errno));
421	>	ErrorAlert(str);
422	>	QuitEmulator();
423	>	}
424	>	#endif
425	>
426	>	#ifdef ENABLE_MON
427	>	// Setup SIGINT handler to enter mon
428	>	sigemptyset(&sigint_sa.sa_mask);
429	>	sigint_sa.sa_handler = sigint_handler;
430	>	sigint_sa.sa_flags = 0;
431	>	sigaction(SIGINT, &sigint_sa, NULL);
432	>	#endif
433
434		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
435	<	// Start 60Hz timer
435	>
436	>	// POSIX.4 timers and real-time signals available, start 60Hz timer
437		sigemptyset(&timer_sa.sa_mask);
225	–	timer_sa.sa_flags = SA_SIGINFO \| SA_RESTART;
438		timer_sa.sa_sigaction = one_tick;
439	+	timer_sa.sa_flags = SA_SIGINFO \| SA_RESTART;
440		if (sigaction(SIG_TIMER, &timer_sa, NULL) < 0) {
441	<	printf("FATAL: cannot set up timer signal handler\n");
441	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_TIMER", strerror(errno));
442	>	ErrorAlert(str);
443		QuitEmulator();
444		}
445		struct sigevent timer_event;
446		timer_event.sigev_notify = SIGEV_SIGNAL;
447		timer_event.sigev_signo = SIG_TIMER;
448		if (timer_create(CLOCK_REALTIME, &timer_event, &timer) < 0) {
449	<	printf("FATAL: cannot create timer\n");
449	>	sprintf(str, GetString(STR_TIMER_CREATE_ERR), strerror(errno));
450	>	ErrorAlert(str);
451		QuitEmulator();
452		}
453		struct itimerspec req;
#	Line 240 \| Line 455 \| int main(int argc, char argv)**
455		req.it_value.tv_nsec = 16625000;
456		req.it_interval.tv_sec = 0;
457		req.it_interval.tv_nsec = 16625000;
458	<	if (timer_settime(timer, TIMER_RELTIME, &req, NULL) < 0) {
459	<	printf("FATAL: cannot start timer\n");
458	>	if (timer_settime(timer, 0, &req, NULL) < 0) {
459	>	sprintf(str, GetString(STR_TIMER_SETTIME_ERR), strerror(errno));
460	>	ErrorAlert(str);
461		QuitEmulator();
462		}
463	+	D(bug("60Hz timer started\n"));
464
465	<	#else
465	>	#elif defined(HAVE_PTHREADS)
466
467	<	// Start 60Hz thread
467	>	// POSIX threads available, start 60Hz thread
468		pthread_attr_init(&tick_thread_attr);
469		#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
470		if (geteuid() == 0) {
#	Line 260 \| Line 477 \| int main(int argc, char argv)**
477		#endif
478		tick_thread_active = (pthread_create(&tick_thread, &tick_thread_attr, tick_func, NULL) == 0);
479		if (!tick_thread_active) {
480	<	printf("FATAL: cannot create tick thread\n");
480	>	sprintf(str, GetString(STR_TICK_THREAD_ERR), strerror(errno));
481	>	ErrorAlert(str);
482		QuitEmulator();
483		}
484	+	D(bug("60Hz thread started\n"));
485	+
486	+	#else
487	+
488	+	// Start 60Hz timer
489	+	sigemptyset(&timer_sa.sa_mask); // Block virtual 68k interrupts during SIGARLM handling
490	+	sigaddset(&timer_sa.sa_mask, SIG_IRQ);
491	+	timer_sa.sa_handler = one_tick;
492	+	timer_sa.sa_flags = SA_ONSTACK \| SA_RESTART;
493	+	if (sigaction(SIGALRM, &timer_sa, NULL) < 0) {
494	+	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGALRM", strerror(errno));
495	+	ErrorAlert(str);
496	+	QuitEmulator();
497	+	}
498	+	struct itimerval req;
499	+	req.it_interval.tv_sec = req.it_value.tv_sec = 0;
500	+	req.it_interval.tv_usec = req.it_value.tv_usec = 16625;
501	+	setitimer(ITIMER_REAL, &req, NULL);
502	+
503		#endif
504
505	<	#if ENABLE_MON
506	<	// Setup SIGINT handler to enter mon
507	<	sigemptyset(&sigint_sa.sa_mask);
508	<	sigint_sa.sa_flags = 0;
509	<	sigint_sa.sa_handler = sigint_handler;
273	<	sigaction(SIGINT, &sigint_sa, NULL);
505	>	#ifdef HAVE_PTHREADS
506	>	// Start XPRAM watchdog thread
507	>	memcpy(last_xpram, XPRAM, 256);
508	>	xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
509	>	D(bug("XPRAM thread started\n"));
510		#endif
511
512		// Start 68k and jump to ROM boot routine
513	+	D(bug("Starting emulation...\n"));
514		Start680x0();
515
516		QuitEmulator();
#	Line 287 \| Line 524 \| int main(int argc, char argv)**
524
525		void QuitEmulator(void)
526		{
527	+	D(bug("QuitEmulator\n"));
528	+
529	+	#if EMULATED_68K
530		// Exit 680x0 emulation
531		Exit680x0();
532	+	#endif
533
534		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
535		// Stop 60Hz timer
536		timer_delete(timer);
537	<	#else
537	>	#elif defined(HAVE_PTHREADS)
538		// Stop 60Hz thread
539		if (tick_thread_active) {
540		tick_thread_cancel = true;
#	Line 302 \| Line 543 \| void QuitEmulator(void)
543		#endif
544		pthread_join(tick_thread, NULL);
545		}
546	+	#else
547	+	struct itimerval req;
548	+	req.it_interval.tv_sec = req.it_value.tv_sec = 0;
549	+	req.it_interval.tv_usec = req.it_value.tv_usec = 0;
550	+	setitimer(ITIMER_REAL, &req, NULL);
551		#endif
552
553	+	#ifdef HAVE_PTHREADS
554		// Stop XPRAM watchdog thread
555		if (xpram_thread_active) {
556		xpram_thread_cancel = true;
#	Line 312 \| Line 559 \| void QuitEmulator(void)
559		#endif
560		pthread_join(xpram_thread, NULL);
561		}
562	+	#endif
563
564		// Deinitialize everything
565		ExitAll();
566
567		// Delete ROM area
568	<	delete[] ROMBaseHost;
568	>	if (ROMBaseHost) {
569	>	free(ROMBaseHost);
570	>	ROMBaseHost = NULL;
571	>	}
572
573		// Delete RAM area
574	<	delete[] RAMBaseHost;
574	>	if (RAMBaseHost) {
575	>	free(RAMBaseHost);
576	>	RAMBaseHost = NULL;
577	>	}
578	>
579	>	#if !EMULATED_68K
580	>	// Delete scratch memory area
581	>	if (ScratchMem) {
582	>	free((void *)(ScratchMem - SCRATCH_MEM_SIZE/2));
583	>	ScratchMem = NULL;
584	>	}
585	>	#endif
586	>
587	>	#if REAL_ADDRESSING
588	>	// Delete Low Memory area
589	>	if (lm_area_mapped)
590	>	munmap((char *)0x0000, 0x2000);
591	>	#endif
592	>
593	>	// Close /dev/zero
594	>	if (zero_fd > 0)
595	>	close(zero_fd);
596
597		// Exit system routines
598		SysExit();
#	Line 341 \| Line 613 \| void QuitEmulator(void)
613		* or a dynamically recompiling emulator)
614		*/
615
344	–	#if EMULATED_68K
616		void FlushCodeCache(void *start, uint32 size)
617		{
618	<	}
618	>	#if !EMULATED_68K && defined(__NetBSD__)
619	>	m68k_sync_icache(start, size);
620		#endif
621	+	}
622
623
624		/*
625		* SIGINT handler, enters mon
626		*/
627
628	<	#if ENABLE_MON
628	>	#ifdef ENABLE_MON
629		static void sigint_handler(...)
630		{
631	+	#if EMULATED_68K
632	+	uaecptr nextpc;
633	+	extern void m68k_dumpstate(uaecptr *nextpc);
634	+	m68k_dumpstate(&nextpc);
635	+	#else
636		char *arg[2] = {"rmon", NULL};
637		mon(1, arg);
638		QuitEmulator();
639	+	#endif
640		}
641		#endif
642
#	Line 368 \| Line 647 \| static void sigint_handler(...)
647
648		uint32 InterruptFlags = 0;
649
650	+	#if EMULATED_68K
651		void SetInterruptFlag(uint32 flag)
652		{
653	+	#ifdef HAVE_PTHREADS
654		pthread_mutex_lock(&intflag_lock);
655		InterruptFlags \|= flag;
656		pthread_mutex_unlock(&intflag_lock);
657	+	#else
658	+	InterruptFlags \|= flag; // Pray that this is an atomic operation...
659	+	#endif
660		}
661
662		void ClearInterruptFlag(uint32 flag)
663		{
664	+	#ifdef HAVE_PTHREADS
665		pthread_mutex_lock(&intflag_lock);
666		InterruptFlags &= ~flag;
667		pthread_mutex_unlock(&intflag_lock);
668	+	#else
669	+	InterruptFlags &= ~flag;
670	+	#endif
671		}
672	+	#endif
673	+
674	+	#if !EMULATED_68K
675	+	void TriggerInterrupt(void)
676	+	{
677	+	#if defined(HAVE_PTHREADS)
678	+	pthread_kill(emul_thread, SIG_IRQ);
679	+	#else
680	+	raise(SIG_IRQ);
681	+	#endif
682	+	}
683	+	#endif
684	+
685	+
686	+	/*
687	+	* XPRAM watchdog thread (saves XPRAM every minute)
688	+	*/
689	+
690	+	static void xpram_watchdog(void)
691	+	{
692	+	if (memcmp(last_xpram, XPRAM, 256)) {
693	+	memcpy(last_xpram, XPRAM, 256);
694	+	SaveXPRAM();
695	+	}
696	+	}
697	+
698	+	#ifdef HAVE_PTHREADS
699	+	static void xpram_func(void arg)
700	+	{
701	+	while (!xpram_thread_cancel) {
702	+	for (int i=0; i<60 && !xpram_thread_cancel; i++)
703	+	Delay_usec(1000000);
704	+	xpram_watchdog();
705	+	}
706	+	return NULL;
707	+	}
708	+	#endif
709
710
711		/*
712		* 60Hz thread (really 60.15Hz)
713		*/
714
715	+	static void one_second(void)
716	+	{
717	+	// Pseudo Mac 1Hz interrupt, update local time
718	+	WriteMacInt32(0x20c, TimerDateTime());
719	+
720	+	SetInterruptFlag(INTFLAG_60HZ);
721	+	TriggerInterrupt();
722	+
723	+	#ifndef HAVE_PTHREADS
724	+	static int second_counter = 0;
725	+	if (++second_counter > 60) {
726	+	second_counter = 0;
727	+	xpram_watchdog();
728	+	}
729	+	#endif
730	+	}
731	+
732		static void one_tick(...)
733		{
734		static int tick_counter = 0;
393	–
394	–	// Pseudo Mac 1Hz interrupt, update local time
735		if (++tick_counter > 60) {
736		tick_counter = 0;
737	<	WriteMacInt32(0x20c, TimerDateTime());
737	>	one_second();
738		}
739
740	+	#ifndef HAVE_PTHREADS
741	+	// No threads available, perform video refresh from here
742	+	VideoRefresh();
743	+	#endif
744	+
745		// Trigger 60Hz interrupt
746		if (ROMVersion != ROM_VERSION_CLASSIC \|\| HasMacStarted()) {
747		SetInterruptFlag(INTFLAG_60HZ);
#	Line 404 \| Line 749 \| static void one_tick(...)
749		}
750		}
751
752	+	#ifdef HAVE_PTHREADS
753		static void tick_func(void arg)
754		{
755	+	uint64 next = GetTicks_usec();
756		while (!tick_thread_cancel) {
410	–
411	–	// Wait
412	–	#ifdef HAVE_NANOSLEEP
413	–	struct timespec req = {0, 16625000};
414	–	nanosleep(&req, NULL);
415	–	#else
416	–	usleep(16625);
417	–	#endif
418	–
419	–	// Action
757		one_tick();
758	+	next += 16625;
759	+	int64 delay = next - GetTicks_usec();
760	+	if (delay > 0)
761	+	Delay_usec(delay);
762	+	else if (delay < -16625)
763	+	next = GetTicks_usec();
764		}
765		return NULL;
766		}
767	+	#endif
768
769
770		/*
771	<	* XPRAM watchdog thread (saves XPRAM every minute)
771	>	* Get current value of microsecond timer
772		*/
773
774	<	void xpram_func(void arg)
774	>	uint64 GetTicks_usec(void)
775		{
776	<	uint8 last_xpram[256];
777	<	memcpy(last_xpram, XPRAM, 256);
776	>	#ifdef HAVE_CLOCK_GETTIME
777	>	struct timespec t;
778	>	clock_gettime(CLOCK_REALTIME, &t);
779	>	return (uint64)t.tv_sec * 1000000 + t.tv_nsec / 1000;
780	>	#else
781	>	struct timeval t;
782	>	gettimeofday(&t, NULL);
783	>	return (uint64)t.tv_sec * 1000000 + t.tv_usec;
784	>	#endif
785	>	}
786
787	<	while (!xpram_thread_cancel) {
788	<	for (int i=0; i<60 && !xpram_thread_cancel; i++) {
789	<	#ifdef HAVE_NANOSLEEP
790	<	struct timespec req = {1, 0};
791	<	nanosleep(&req, NULL);
787	>
788	>	/*
789	>	* Delay by specified number of microseconds (<1 second)
790	>	* (adapted from SDL_Delay() source)
791	>	*/
792	>
793	>	void Delay_usec(uint32 usec)
794	>	{
795	>	int was_error;
796	>	#ifndef __linux__ // Non-Linux implementations need to calculate time left
797	>	uint64 then, now, elapsed;
798	>	#endif
799	>	struct timeval tv;
800	>
801	>	// Set the timeout interval - Linux only needs to do this once
802	>	#ifdef __linux__
803	>	tv.tv_sec = 0;
804	>	tv.tv_usec = usec;
805		#else
806	<	usleep(1000000);
806	>	then = GetTicks_usec();
807	>	#endif
808	>	do {
809	>	errno = 0;
810	>	#ifndef __linux__
811	>	/* Calculate the time interval left (in case of interrupt) */
812	>	now = GetTicks_usec();
813	>	elapsed = now - then;
814	>	then = now;
815	>	if (elapsed >= usec)
816	>	break;
817	>	usec -= elapsed;
818	>	tv.tv_sec = 0;
819	>	tv.tv_usec = usec;
820		#endif
821	+	was_error = select(0, NULL, NULL, NULL, &tv);
822	+	} while (was_error && (errno == EINTR));
823	+	}
824	+
825	+
826	+	#if !EMULATED_68K
827	+	/*
828	+	* Virtual 68k interrupt handler
829	+	*/
830	+
831	+	static void sigirq_handler(int sig, int code, struct sigcontext *scp)
832	+	{
833	+	// Interrupts disabled? Then do nothing
834	+	if (EmulatedSR & 0x0700)
835	+	return;
836	+
837	+	struct sigstate state = (struct sigstate )scp->sc_ap;
838	+	M68kRegisters regs = (M68kRegisters )&state->ss_frame;
839	+
840	+	// Set up interrupt frame on stack
841	+	uint32 a7 = regs->a[7];
842	+	a7 -= 2;
843	+	WriteMacInt16(a7, 0x64);
844	+	a7 -= 4;
845	+	WriteMacInt32(a7, scp->sc_pc);
846	+	a7 -= 2;
847	+	WriteMacInt16(a7, scp->sc_ps \| EmulatedSR);
848	+	scp->sc_sp = regs->a[7] = a7;
849	+
850	+	// Set interrupt level
851	+	EmulatedSR \|= 0x2100;
852	+
853	+	// Jump to MacOS interrupt handler on return
854	+	scp->sc_pc = ReadMacInt32(0x64);
855	+	}
856	+
857	+
858	+	/*
859	+	* SIGILL handler, for emulation of privileged instructions and executing
860	+	* A-Trap and EMUL_OP opcodes
861	+	*/
862	+
863	+	static void sigill_handler(int sig, int code, struct sigcontext *scp)
864	+	{
865	+	struct sigstate state = (struct sigstate )scp->sc_ap;
866	+	uint16 pc = (uint16 )scp->sc_pc;
867	+	uint16 opcode = *pc;
868	+	M68kRegisters regs = (M68kRegisters )&state->ss_frame;
869	+
870	+	#define INC_PC(n) scp->sc_pc += (n)
871	+
872	+	#define GET_SR (scp->sc_ps \| EmulatedSR)
873	+
874	+	#define STORE_SR(v) \
875	+	scp->sc_ps = (v) & 0xff; \
876	+	EmulatedSR = (v) & 0x2700; \
877	+	if (((v) & 0x0700) == 0 && InterruptFlags) \
878	+	TriggerInterrupt();
879	+
880	+	//printf("opcode %04x at %p, sr %04x, emul_sr %04x\n", opcode, pc, scp->sc_ps, EmulatedSR);
881	+
882	+	if ((opcode & 0xf000) == 0xa000) {
883	+
884	+	// A-Line instruction, set up A-Line trap frame on stack
885	+	uint32 a7 = regs->a[7];
886	+	a7 -= 2;
887	+	WriteMacInt16(a7, 0x28);
888	+	a7 -= 4;
889	+	WriteMacInt32(a7, (uint32)pc);
890	+	a7 -= 2;
891	+	WriteMacInt16(a7, GET_SR);
892	+	scp->sc_sp = regs->a[7] = a7;
893	+
894	+	// Jump to MacOS A-Line handler on return
895	+	scp->sc_pc = ReadMacInt32(0x28);
896	+
897	+	} else if ((opcode & 0xff00) == 0x7100) {
898	+
899	+	// Extended opcode, push registers on user stack
900	+	uint32 a7 = regs->a[7];
901	+	a7 -= 4;
902	+	WriteMacInt32(a7, (uint32)pc);
903	+	a7 -= 2;
904	+	WriteMacInt16(a7, scp->sc_ps);
905	+	for (int i=7; i>=0; i--) {
906	+	a7 -= 4;
907	+	WriteMacInt32(a7, regs->a[i]);
908		}
909	<	if (memcmp(last_xpram, XPRAM, 256)) {
910	<	memcpy(last_xpram, XPRAM, 256);
911	<	SaveXPRAM();
909	>	for (int i=7; i>=0; i--) {
910	>	a7 -= 4;
911	>	WriteMacInt32(a7, regs->d[i]);
912		}
913	+	scp->sc_sp = regs->a[7] = a7;
914	+
915	+	// Jump to EmulOp trampoline code on return
916	+	scp->sc_pc = (uint32)EmulOpTrampoline;
917	+
918	+	} else switch (opcode) { // Emulate privileged instructions
919	+
920	+	case 0x40e7: // move sr,-(sp)
921	+	regs->a[7] -= 2;
922	+	WriteMacInt16(regs->a[7], GET_SR);
923	+	scp->sc_sp = regs->a[7];
924	+	INC_PC(2);
925	+	break;
926	+
927	+	case 0x46df: { // move (sp)+,sr
928	+	uint16 sr = ReadMacInt16(regs->a[7]);
929	+	STORE_SR(sr);
930	+	regs->a[7] += 2;
931	+	scp->sc_sp = regs->a[7];
932	+	INC_PC(2);
933	+	break;
934	+	}
935	+
936	+	case 0x007c: { // ori #xxxx,sr
937	+	uint16 sr = GET_SR \| pc[1];
938	+	scp->sc_ps = sr & 0xff; // oring bits into the sr can't enable interrupts, so we don't need to call STORE_SR
939	+	EmulatedSR = sr & 0x2700;
940	+	INC_PC(4);
941	+	break;
942	+	}
943	+
944	+	case 0x027c: { // andi #xxxx,sr
945	+	uint16 sr = GET_SR & pc[1];
946	+	STORE_SR(sr);
947	+	INC_PC(4);
948	+	break;
949	+	}
950	+
951	+	case 0x46fc: // move #xxxx,sr
952	+	STORE_SR(pc[1]);
953	+	INC_PC(4);
954	+	break;
955	+
956	+	case 0x46ef: { // move (xxxx,sp),sr
957	+	uint16 sr = ReadMacInt16(regs->a[7] + (int32)(int16)pc[1]);
958	+	STORE_SR(sr);
959	+	INC_PC(4);
960	+	break;
961	+	}
962	+
963	+	case 0x46d8: // move (a0)+,sr
964	+	case 0x46d9: { // move (a1)+,sr
965	+	uint16 sr = ReadMacInt16(regs->a[opcode & 7]);
966	+	STORE_SR(sr);
967	+	regs->a[opcode & 7] += 2;
968	+	INC_PC(2);
969	+	break;
970	+	}
971	+
972	+	case 0x40f8: // move sr,xxxx.w
973	+	WriteMacInt16(pc[1], GET_SR);
974	+	INC_PC(4);
975	+	break;
976	+
977	+	case 0x40d0: // move sr,(a0)
978	+	case 0x40d1: // move sr,(a1)
979	+	case 0x40d2: // move sr,(a2)
980	+	case 0x40d3: // move sr,(a3)
981	+	case 0x40d4: // move sr,(a4)
982	+	case 0x40d5: // move sr,(a5)
983	+	case 0x40d6: // move sr,(a6)
984	+	case 0x40d7: // move sr,(sp)
985	+	WriteMacInt16(regs->a[opcode & 7], GET_SR);
986	+	INC_PC(2);
987	+	break;
988	+
989	+	case 0x40c0: // move sr,d0
990	+	case 0x40c1: // move sr,d1
991	+	case 0x40c2: // move sr,d2
992	+	case 0x40c3: // move sr,d3
993	+	case 0x40c4: // move sr,d4
994	+	case 0x40c5: // move sr,d5
995	+	case 0x40c6: // move sr,d6
996	+	case 0x40c7: // move sr,d7
997	+	regs->d[opcode & 7] = GET_SR;
998	+	INC_PC(2);
999	+	break;
1000	+
1001	+	case 0x46c0: // move d0,sr
1002	+	case 0x46c1: // move d1,sr
1003	+	case 0x46c2: // move d2,sr
1004	+	case 0x46c3: // move d3,sr
1005	+	case 0x46c4: // move d4,sr
1006	+	case 0x46c5: // move d5,sr
1007	+	case 0x46c6: // move d6,sr
1008	+	case 0x46c7: { // move d7,sr
1009	+	uint16 sr = regs->d[opcode & 7];
1010	+	STORE_SR(sr);
1011	+	INC_PC(2);
1012	+	break;
1013	+	}
1014	+
1015	+	case 0xf327: // fsave -(sp)
1016	+	goto ill; //!!
1017	+
1018	+	case 0xf35f: // frestore (sp)+
1019	+	goto ill; //!!
1020	+
1021	+	case 0x4e73: { // rte (only handles format 0)
1022	+	uint32 a7 = regs->a[7];
1023	+	uint16 sr = ReadMacInt16(a7);
1024	+	a7 += 2;
1025	+	scp->sc_ps = sr & 0xff;
1026	+	EmulatedSR = sr & 0x2700;
1027	+	scp->sc_pc = ReadMacInt32(a7);
1028	+	a7 += 6;
1029	+	scp->sc_sp = regs->a[7] = a7;
1030	+	break;
1031	+	}
1032	+
1033	+	case 0x4e7a: // movec cr,x
1034	+	switch (pc[1]) {
1035	+	case 0x8801: // movec vbr,a0
1036	+	regs->a[0] = 0;
1037	+	break;
1038	+	case 0x9801: // movec vbr,a1
1039	+	regs->a[1] = 0;
1040	+	break;
1041	+	case 0x0002: // movec cacr,d0
1042	+	regs->d[0] = 0x3111;
1043	+	break;
1044	+	case 0x1002: // movec cacr,d1
1045	+	regs->d[1] = 0x3111;
1046	+	break;
1047	+	case 0x0003: // movec tc,d0
1048	+	regs->d[0] = 0;
1049	+	break;
1050	+	case 0x1003: // movec tc,d1
1051	+	regs->d[1] = 0;
1052	+	break;
1053	+	default:
1054	+	goto ill;
1055	+	}
1056	+	INC_PC(4);
1057	+	break;
1058	+
1059	+	case 0x4e7b: // movec x,cr
1060	+	switch (pc[1]) {
1061	+	case 0x0801: // movec d0,vbr
1062	+	break;
1063	+	case 0x0002: // movec d0,cacr
1064	+	case 0x1002: // movec d1,cacr
1065	+	FlushCodeCache(NULL, 0);
1066	+	break;
1067	+	default:
1068	+	goto ill;
1069	+	}
1070	+	INC_PC(4);
1071	+	break;
1072	+
1073	+	case 0xf478: // cpusha dc
1074	+	case 0xf4f8: // cpusha dc/ic
1075	+	FlushCodeCache(NULL, 0);
1076	+	INC_PC(2);
1077	+	break;
1078	+
1079	+	default:
1080	+	ill: printf("SIGILL num %d, code %d\n", sig, code);
1081	+	printf(" context %p:\n", scp);
1082	+	printf(" onstack %08x\n", scp->sc_onstack);
1083	+	printf(" sp %08x\n", scp->sc_sp);
1084	+	printf(" fp %08x\n", scp->sc_fp);
1085	+	printf(" pc %08x\n", scp->sc_pc);
1086	+	printf(" opcode %04x\n", opcode);
1087	+	printf(" sr %08x\n", scp->sc_ps);
1088	+	printf(" state %p:\n", state);
1089	+	printf(" flags %d\n", state->ss_flags);
1090	+	for (int i=0; i<8; i++)
1091	+	printf(" d%d %08x\n", i, state->ss_frame.f_regs[i]);
1092	+	for (int i=0; i<8; i++)
1093	+	printf(" a%d %08x\n", i, state->ss_frame.f_regs[i+8]);
1094	+
1095	+	#ifdef ENABLE_MON
1096	+	char *arg[2] = {"rmon", NULL};
1097	+	mon(1, arg);
1098	+	#endif
1099	+	QuitEmulator();
1100	+	break;
1101		}
449	–	return NULL;
1102		}
1103	+	#endif
1104
1105
1106		/*
1107		* Display alert
1108		*/
1109
1110	<	#if ENABLE_GTK
1110	>	#ifdef ENABLE_GTK
1111		static void dl_destroyed(void)
1112		{
1113		gtk_main_quit();
#	Line 499 \| Line 1152 \| void display_alert(int title_id, int pre
1152
1153		void ErrorAlert(const char *text)
1154		{
1155	<	#if ENABLE_GTK
1155	>	#ifdef ENABLE_GTK
1156		if (PrefsFindBool("nogui") \|\| x_display == NULL) {
1157		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
1158		return;
#	Line 518 \| Line 1171 \| *void ErrorAlert(const char text)**
1171
1172		void WarningAlert(const char *text)
1173		{
1174	<	#if ENABLE_GTK
1174	>	#ifdef ENABLE_GTK
1175		if (PrefsFindBool("nogui") \|\| x_display == NULL) {
1176		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
1177		return;

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Comparing BasiliskII/src/Unix/main_unix.cpp (file contents): Revision 1.6 by cebix, 1999-10-27T16:59:46Z vs. Revision 1.17 by cebix, 2000-07-24T15:17:07Z

Diff Legend

Comparing BasiliskII/src/Unix/main_unix.cpp (file contents):
Revision 1.6 by cebix, 1999-10-27T16:59:46Z vs.
Revision 1.17 by cebix, 2000-07-24T15:17:07Z