[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 1.16 by cebix, 2000-07-22T18:12:34Z

#	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
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 = new uint8[RAMSize];
305		ROMBaseHost = new uint8[0x100000];
306	+	#endif
307	+	#if REAL_ADDRESSING && !EMULATED_68K
308	+	RAMBaseMac = (uint32)RAMBaseHost;
309	+	ROMBaseMac = (uint32)ROMBaseHost;
310	+	#endif
311	+	D(bug("Mac RAM starts at %p (%08x)\n", RAMBaseHost, RAMBaseMac));
312	+	D(bug("Mac ROM starts at %p (%08x)\n", ROMBaseHost, ROMBaseMac));
313
314		// Get rom file path from preferences
315		const char *rom_path = PrefsFindString("rom");
#	Line 212 \| Line 334 \| int main(int argc, char argv)**
334		QuitEmulator();
335		}
336
337	+	#if !EMULATED_68K
338	+	// Get CPU model
339	+	int mib[2] = {CTL_HW, HW_MODEL};
340	+	char *model;
341	+	size_t model_len;
342	+	sysctl(mib, 2, NULL, &model_len, NULL, 0);
343	+	model = (char *)malloc(model_len);
344	+	sysctl(mib, 2, model, &model_len, NULL, 0);
345	+	D(bug("Model: %s\n", model));
346	+
347	+	// Set CPU and FPU type
348	+	CPUIs68060 = false;
349	+	if (strstr(model, "020"))
350	+	CPUType = 2;
351	+	else if (strstr(model, "030"))
352	+	CPUType = 3;
353	+	else if (strstr(model, "040"))
354	+	CPUType = 4;
355	+	else if (strstr(model, "060")) {
356	+	CPUType = 4;
357	+	CPUIs68060 = true;
358	+	} else {
359	+	printf("WARNING: Cannot detect CPU type, assuming 68020\n");
360	+	CPUType = 2;
361	+	}
362	+	FPUType = 0; //!!
363	+	TwentyFourBitAddressing = false;
364	+	#endif
365	+
366		// Initialize everything
367		if (!InitAll())
368		QuitEmulator();
369	+	D(bug("Initialization complete\n"));
370
371	<	// Start XPRAM watchdog thread
372	<	xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
371	>	#ifdef HAVE_PTHREADS
372	>	// Get handle of main thread
373	>	emul_thread = pthread_self();
374	>	#endif
375	>
376	>	#if !EMULATED_68K
377	>	// (Virtual) supervisor mode, disable interrupts
378	>	EmulatedSR = 0x2700;
379	>
380	>	// Create and install stack for signal handlers
381	>	sig_stack = malloc(SIG_STACK_SIZE);
382	>	D(bug("Signal stack at %p\n", sig_stack));
383	>	if (sig_stack == NULL) {
384	>	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
385	>	QuitEmulator();
386	>	}
387	>	stack_t new_stack;
388	>	new_stack.ss_sp = sig_stack;
389	>	new_stack.ss_flags = 0;
390	>	new_stack.ss_size = SIG_STACK_SIZE;
391	>	if (sigaltstack(&new_stack, NULL) < 0) {
392	>	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
393	>	ErrorAlert(str);
394	>	QuitEmulator();
395	>	}
396	>
397	>	// Install SIGILL handler for emulating privileged instructions and
398	>	// executing A-Trap and EMUL_OP opcodes
399	>	sigemptyset(&sigill_sa.sa_mask); // Block virtual 68k interrupts during SIGILL handling
400	>	sigaddset(&sigill_sa.sa_mask, SIG_IRQ);
401	>	sigaddset(&sigill_sa.sa_mask, SIGALRM);
402	>	sigill_sa.sa_handler = (void (*)(int))sigill_handler;
403	>	sigill_sa.sa_flags = SA_ONSTACK;
404	>	if (sigaction(SIGILL, &sigill_sa, NULL) < 0) {
405	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno));
406	>	ErrorAlert(str);
407	>	QuitEmulator();
408	>	}
409	>
410	>	// Install virtual 68k interrupt signal handler
411	>	sigemptyset(&sigirq_sa.sa_mask);
412	>	sigaddset(&sigirq_sa.sa_mask, SIGALRM);
413	>	sigirq_sa.sa_handler = (void (*)(int))sigirq_handler;
414	>	sigirq_sa.sa_flags = SA_ONSTACK \| SA_RESTART;
415	>	if (sigaction(SIG_IRQ, &sigirq_sa, NULL) < 0) {
416	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_IRQ", strerror(errno));
417	>	ErrorAlert(str);
418	>	QuitEmulator();
419	>	}
420	>	#endif
421	>
422	>	#ifdef ENABLE_MON
423	>	// Setup SIGINT handler to enter mon
424	>	sigemptyset(&sigint_sa.sa_mask);
425	>	sigint_sa.sa_handler = sigint_handler;
426	>	sigint_sa.sa_flags = 0;
427	>	sigaction(SIGINT, &sigint_sa, NULL);
428	>	#endif
429
430		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
431	<	// Start 60Hz timer
431	>
432	>	// POSIX.4 timers and real-time signals available, start 60Hz timer
433		sigemptyset(&timer_sa.sa_mask);
225	–	timer_sa.sa_flags = SA_SIGINFO \| SA_RESTART;
434		timer_sa.sa_sigaction = one_tick;
435	+	timer_sa.sa_flags = SA_SIGINFO \| SA_RESTART;
436		if (sigaction(SIG_TIMER, &timer_sa, NULL) < 0) {
437	<	printf("FATAL: cannot set up timer signal handler\n");
437	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_TIMER", strerror(errno));
438	>	ErrorAlert(str);
439		QuitEmulator();
440		}
441		struct sigevent timer_event;
442		timer_event.sigev_notify = SIGEV_SIGNAL;
443		timer_event.sigev_signo = SIG_TIMER;
444		if (timer_create(CLOCK_REALTIME, &timer_event, &timer) < 0) {
445	<	printf("FATAL: cannot create timer\n");
445	>	sprintf(str, GetString(STR_TIMER_CREATE_ERR), strerror(errno));
446	>	ErrorAlert(str);
447		QuitEmulator();
448		}
449		struct itimerspec req;
#	Line 240 \| Line 451 \| int main(int argc, char argv)**
451		req.it_value.tv_nsec = 16625000;
452		req.it_interval.tv_sec = 0;
453		req.it_interval.tv_nsec = 16625000;
454	<	if (timer_settime(timer, TIMER_RELTIME, &req, NULL) < 0) {
455	<	printf("FATAL: cannot start timer\n");
454	>	if (timer_settime(timer, 0, &req, NULL) < 0) {
455	>	sprintf(str, GetString(STR_TIMER_SETTIME_ERR), strerror(errno));
456	>	ErrorAlert(str);
457		QuitEmulator();
458		}
459	+	D(bug("60Hz timer started\n"));
460
461	<	#else
461	>	#elif defined(HAVE_PTHREADS)
462
463	<	// Start 60Hz thread
463	>	// POSIX threads available, start 60Hz thread
464		pthread_attr_init(&tick_thread_attr);
465		#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
466		if (geteuid() == 0) {
#	Line 260 \| Line 473 \| int main(int argc, char argv)**
473		#endif
474		tick_thread_active = (pthread_create(&tick_thread, &tick_thread_attr, tick_func, NULL) == 0);
475		if (!tick_thread_active) {
476	<	printf("FATAL: cannot create tick thread\n");
476	>	sprintf(str, GetString(STR_TICK_THREAD_ERR), strerror(errno));
477	>	ErrorAlert(str);
478	>	QuitEmulator();
479	>	}
480	>	D(bug("60Hz thread started\n"));
481	>
482	>	#else
483	>
484	>	// Start 60Hz timer
485	>	sigemptyset(&timer_sa.sa_mask); // Block virtual 68k interrupts during SIGARLM handling
486	>	sigaddset(&timer_sa.sa_mask, SIG_IRQ);
487	>	timer_sa.sa_handler = one_tick;
488	>	timer_sa.sa_flags = SA_ONSTACK \| SA_RESTART;
489	>	if (sigaction(SIGALRM, &timer_sa, NULL) < 0) {
490	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGALRM", strerror(errno));
491	>	ErrorAlert(str);
492		QuitEmulator();
493		}
494	+	struct itimerval req;
495	+	req.it_interval.tv_sec = req.it_value.tv_sec = 0;
496	+	req.it_interval.tv_usec = req.it_value.tv_usec = 16625;
497	+	setitimer(ITIMER_REAL, &req, NULL);
498	+
499		#endif
500
501	<	#if ENABLE_MON
502	<	// Setup SIGINT handler to enter mon
503	<	sigemptyset(&sigint_sa.sa_mask);
504	<	sigint_sa.sa_flags = 0;
505	<	sigint_sa.sa_handler = sigint_handler;
273	<	sigaction(SIGINT, &sigint_sa, NULL);
501	>	#ifdef HAVE_PTHREADS
502	>	// Start XPRAM watchdog thread
503	>	memcpy(last_xpram, XPRAM, 256);
504	>	xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
505	>	D(bug("XPRAM thread started\n"));
506		#endif
507
508		// Start 68k and jump to ROM boot routine
509	+	D(bug("Starting emulation...\n"));
510		Start680x0();
511
512		QuitEmulator();
#	Line 287 \| Line 520 \| int main(int argc, char argv)**
520
521		void QuitEmulator(void)
522		{
523	+	D(bug("QuitEmulator\n"));
524	+
525	+	#if EMULATED_68K
526		// Exit 680x0 emulation
527		Exit680x0();
528	+	#endif
529
530		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
531		// Stop 60Hz timer
532		timer_delete(timer);
533	<	#else
533	>	#elif defined(HAVE_PTHREADS)
534		// Stop 60Hz thread
535		if (tick_thread_active) {
536		tick_thread_cancel = true;
#	Line 302 \| Line 539 \| void QuitEmulator(void)
539		#endif
540		pthread_join(tick_thread, NULL);
541		}
542	+	#else
543	+	struct itimerval req;
544	+	req.it_interval.tv_sec = req.it_value.tv_sec = 0;
545	+	req.it_interval.tv_usec = req.it_value.tv_usec = 0;
546	+	setitimer(ITIMER_REAL, &req, NULL);
547		#endif
548
549	+	#ifdef HAVE_PTHREADS
550		// Stop XPRAM watchdog thread
551		if (xpram_thread_active) {
552		xpram_thread_cancel = true;
#	Line 312 \| Line 555 \| void QuitEmulator(void)
555		#endif
556		pthread_join(xpram_thread, NULL);
557		}
558	+	#endif
559
560		// Deinitialize everything
561		ExitAll();
#	Line 322 \| Line 566 \| void QuitEmulator(void)
566		// Delete RAM area
567		delete[] RAMBaseHost;
568
569	+	#if !EMULATED_68K
570	+	// Delete scratch memory area
571	+	if (ScratchMem)
572	+	free((void *)(ScratchMem - SCRATCH_MEM_SIZE/2));
573	+	#endif
574	+
575	+	#if REAL_ADDRESSING
576	+	// Delete Low Memory area
577	+	if (lm_area_mapped)
578	+	munmap((char *)0x0000, 0x2000);
579	+	#endif
580	+
581	+	// Close /dev/zero
582	+	if (zero_fd > 0)
583	+	close(zero_fd);
584	+
585		// Exit system routines
586		SysExit();
587
#	Line 341 \| Line 601 \| void QuitEmulator(void)
601		* or a dynamically recompiling emulator)
602		*/
603
344	–	#if EMULATED_68K
604		void FlushCodeCache(void *start, uint32 size)
605		{
606	<	}
606	>	#if !EMULATED_68K && defined(__NetBSD__)
607	>	m68k_sync_icache(start, size);
608		#endif
609	+	}
610
611
612		/*
613		* SIGINT handler, enters mon
614		*/
615
616	<	#if ENABLE_MON
616	>	#ifdef ENABLE_MON
617		static void sigint_handler(...)
618		{
619	+	#if EMULATED_68K
620	+	uaecptr nextpc;
621	+	extern void m68k_dumpstate(uaecptr *nextpc);
622	+	m68k_dumpstate(&nextpc);
623	+	#else
624		char *arg[2] = {"rmon", NULL};
625		mon(1, arg);
626		QuitEmulator();
627	+	#endif
628		}
629		#endif
630
#	Line 368 \| Line 635 \| static void sigint_handler(...)
635
636		uint32 InterruptFlags = 0;
637
638	+	#if EMULATED_68K
639		void SetInterruptFlag(uint32 flag)
640		{
641	+	#ifdef HAVE_PTHREADS
642		pthread_mutex_lock(&intflag_lock);
643		InterruptFlags \|= flag;
644		pthread_mutex_unlock(&intflag_lock);
645	+	#else
646	+	InterruptFlags \|= flag; // Pray that this is an atomic operation...
647	+	#endif
648		}
649
650		void ClearInterruptFlag(uint32 flag)
651		{
652	+	#ifdef HAVE_PTHREADS
653		pthread_mutex_lock(&intflag_lock);
654		InterruptFlags &= ~flag;
655		pthread_mutex_unlock(&intflag_lock);
656	+	#else
657	+	InterruptFlags &= ~flag;
658	+	#endif
659	+	}
660	+	#endif
661	+
662	+	#if !EMULATED_68K
663	+	void TriggerInterrupt(void)
664	+	{
665	+	#if defined(HAVE_PTHREADS)
666	+	pthread_kill(emul_thread, SIG_IRQ);
667	+	#else
668	+	raise(SIG_IRQ);
669	+	#endif
670	+	}
671	+	#endif
672	+
673	+
674	+	/*
675	+	* XPRAM watchdog thread (saves XPRAM every minute)
676	+	*/
677	+
678	+	static void xpram_watchdog(void)
679	+	{
680	+	if (memcmp(last_xpram, XPRAM, 256)) {
681	+	memcpy(last_xpram, XPRAM, 256);
682	+	SaveXPRAM();
683	+	}
684		}
685
686	+	#ifdef HAVE_PTHREADS
687	+	static void xpram_func(void arg)
688	+	{
689	+	while (!xpram_thread_cancel) {
690	+	for (int i=0; i<60 && !xpram_thread_cancel; i++)
691	+	Delay_usec(1000000);
692	+	xpram_watchdog();
693	+	}
694	+	return NULL;
695	+	}
696	+	#endif
697	+
698
699		/*
700		* 60Hz thread (really 60.15Hz)
701		*/
702
703	+	static void one_second(void)
704	+	{
705	+	// Pseudo Mac 1Hz interrupt, update local time
706	+	WriteMacInt32(0x20c, TimerDateTime());
707	+
708	+	SetInterruptFlag(INTFLAG_60HZ);
709	+	TriggerInterrupt();
710	+
711	+	#ifndef HAVE_PTHREADS
712	+	static int second_counter = 0;
713	+	if (++second_counter > 60) {
714	+	second_counter = 0;
715	+	xpram_watchdog();
716	+	}
717	+	#endif
718	+	}
719	+
720		static void one_tick(...)
721		{
722		static int tick_counter = 0;
393	–
394	–	// Pseudo Mac 1Hz interrupt, update local time
723		if (++tick_counter > 60) {
724		tick_counter = 0;
725	<	WriteMacInt32(0x20c, TimerDateTime());
725	>	one_second();
726		}
727
728	+	#ifndef HAVE_PTHREADS
729	+	// No threads available, perform video refresh from here
730	+	VideoRefresh();
731	+	#endif
732	+
733		// Trigger 60Hz interrupt
734		if (ROMVersion != ROM_VERSION_CLASSIC \|\| HasMacStarted()) {
735		SetInterruptFlag(INTFLAG_60HZ);
#	Line 404 \| Line 737 \| static void one_tick(...)
737		}
738		}
739
740	+	#ifdef HAVE_PTHREADS
741		static void tick_func(void arg)
742		{
743	+	uint64 next = GetTicks_usec();
744		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
745		one_tick();
746	+	next += 16625;
747	+	int64 delay = next - GetTicks_usec();
748	+	if (delay > 0)
749	+	Delay_usec(delay);
750	+	else if (delay < -16625)
751	+	next = GetTicks_usec();
752		}
753		return NULL;
754		}
755	+	#endif
756	+
757	+
758	+	/*
759	+	* Get current value of microsecond timer
760	+	*/
761	+
762	+	uint64 GetTicks_usec(void)
763	+	{
764	+	#ifdef HAVE_CLOCK_GETTIME
765	+	struct timespec t;
766	+	clock_gettime(CLOCK_REALTIME, &t);
767	+	return (uint64)t.tv_sec * 1000000 + t.tv_nsec / 1000;
768	+	#else
769	+	struct timeval t;
770	+	gettimeofday(&t, NULL);
771	+	return (uint64)t.tv_sec * 1000000 + t.tv_usec;
772	+	#endif
773	+	}
774
775
776		/*
777	<	* XPRAM watchdog thread (saves XPRAM every minute)
777	>	* Delay by specified number of microseconds (<1 second)
778	>	* (adapted from SDL_Delay() source)
779		*/
780
781	<	void xpram_func(void arg)
781	>	void Delay_usec(uint32 usec)
782		{
783	<	uint8 last_xpram[256];
784	<	memcpy(last_xpram, XPRAM, 256);
783	>	int was_error;
784	>	#ifndef __linux__ // Non-Linux implementations need to calculate time left
785	>	uint64 then, now, elapsed;
786	>	#endif
787	>	struct timeval tv;
788
789	<	while (!xpram_thread_cancel) {
790	<	for (int i=0; i<60 && !xpram_thread_cancel; i++) {
791	<	#ifdef HAVE_NANOSLEEP
792	<	struct timespec req = {1, 0};
439	<	nanosleep(&req, NULL);
789	>	// Set the timeout interval - Linux only needs to do this once
790	>	#ifdef __linux__
791	>	tv.tv_sec = 0;
792	>	tv.tv_usec = usec;
793		#else
794	<	usleep(1000000);
794	>	then = GetTicks_usec();
795	>	#endif
796	>	do {
797	>	errno = 0;
798	>	#ifndef __linux__
799	>	/* Calculate the time interval left (in case of interrupt) */
800	>	now = GetTicks_usec();
801	>	elapsed = now - then;
802	>	then = now;
803	>	if (elapsed >= usec)
804	>	break;
805	>	usec -= elapsed;
806	>	tv.tv_sec = 0;
807	>	tv.tv_usec = usec;
808		#endif
809	+	was_error = select(0, NULL, NULL, NULL, &tv);
810	+	} while (was_error && (errno == EINTR));
811	+	}
812	+
813	+
814	+	#if !EMULATED_68K
815	+	/*
816	+	* Virtual 68k interrupt handler
817	+	*/
818	+
819	+	static void sigirq_handler(int sig, int code, struct sigcontext *scp)
820	+	{
821	+	// Interrupts disabled? Then do nothing
822	+	if (EmulatedSR & 0x0700)
823	+	return;
824	+
825	+	struct sigstate state = (struct sigstate )scp->sc_ap;
826	+	M68kRegisters regs = (M68kRegisters )&state->ss_frame;
827	+
828	+	// Set up interrupt frame on stack
829	+	uint32 a7 = regs->a[7];
830	+	a7 -= 2;
831	+	WriteMacInt16(a7, 0x64);
832	+	a7 -= 4;
833	+	WriteMacInt32(a7, scp->sc_pc);
834	+	a7 -= 2;
835	+	WriteMacInt16(a7, scp->sc_ps \| EmulatedSR);
836	+	scp->sc_sp = regs->a[7] = a7;
837	+
838	+	// Set interrupt level
839	+	EmulatedSR \|= 0x2100;
840	+
841	+	// Jump to MacOS interrupt handler on return
842	+	scp->sc_pc = ReadMacInt32(0x64);
843	+	}
844	+
845	+
846	+	/*
847	+	* SIGILL handler, for emulation of privileged instructions and executing
848	+	* A-Trap and EMUL_OP opcodes
849	+	*/
850	+
851	+	static void sigill_handler(int sig, int code, struct sigcontext *scp)
852	+	{
853	+	struct sigstate state = (struct sigstate )scp->sc_ap;
854	+	uint16 pc = (uint16 )scp->sc_pc;
855	+	uint16 opcode = *pc;
856	+	M68kRegisters regs = (M68kRegisters )&state->ss_frame;
857	+
858	+	#define INC_PC(n) scp->sc_pc += (n)
859	+
860	+	#define GET_SR (scp->sc_ps \| EmulatedSR)
861	+
862	+	#define STORE_SR(v) \
863	+	scp->sc_ps = (v) & 0xff; \
864	+	EmulatedSR = (v) & 0x2700; \
865	+	if (((v) & 0x0700) == 0 && InterruptFlags) \
866	+	TriggerInterrupt();
867	+
868	+	//printf("opcode %04x at %p, sr %04x, emul_sr %04x\n", opcode, pc, scp->sc_ps, EmulatedSR);
869	+
870	+	if ((opcode & 0xf000) == 0xa000) {
871	+
872	+	// A-Line instruction, set up A-Line trap frame on stack
873	+	uint32 a7 = regs->a[7];
874	+	a7 -= 2;
875	+	WriteMacInt16(a7, 0x28);
876	+	a7 -= 4;
877	+	WriteMacInt32(a7, (uint32)pc);
878	+	a7 -= 2;
879	+	WriteMacInt16(a7, GET_SR);
880	+	scp->sc_sp = regs->a[7] = a7;
881	+
882	+	// Jump to MacOS A-Line handler on return
883	+	scp->sc_pc = ReadMacInt32(0x28);
884	+
885	+	} else if ((opcode & 0xff00) == 0x7100) {
886	+
887	+	// Extended opcode, push registers on user stack
888	+	uint32 a7 = regs->a[7];
889	+	a7 -= 4;
890	+	WriteMacInt32(a7, (uint32)pc);
891	+	a7 -= 2;
892	+	WriteMacInt16(a7, scp->sc_ps);
893	+	for (int i=7; i>=0; i--) {
894	+	a7 -= 4;
895	+	WriteMacInt32(a7, regs->a[i]);
896		}
897	<	if (memcmp(last_xpram, XPRAM, 256)) {
898	<	memcpy(last_xpram, XPRAM, 256);
899	<	SaveXPRAM();
897	>	for (int i=7; i>=0; i--) {
898	>	a7 -= 4;
899	>	WriteMacInt32(a7, regs->d[i]);
900		}
901	+	scp->sc_sp = regs->a[7] = a7;
902	+
903	+	// Jump to EmulOp trampoline code on return
904	+	scp->sc_pc = (uint32)EmulOpTrampoline;
905	+
906	+	} else switch (opcode) { // Emulate privileged instructions
907	+
908	+	case 0x40e7: // move sr,-(sp)
909	+	regs->a[7] -= 2;
910	+	WriteMacInt16(regs->a[7], GET_SR);
911	+	scp->sc_sp = regs->a[7];
912	+	INC_PC(2);
913	+	break;
914	+
915	+	case 0x46df: { // move (sp)+,sr
916	+	uint16 sr = ReadMacInt16(regs->a[7]);
917	+	STORE_SR(sr);
918	+	regs->a[7] += 2;
919	+	scp->sc_sp = regs->a[7];
920	+	INC_PC(2);
921	+	break;
922	+	}
923	+
924	+	case 0x007c: { // ori #xxxx,sr
925	+	uint16 sr = GET_SR \| pc[1];
926	+	scp->sc_ps = sr & 0xff; // oring bits into the sr can't enable interrupts, so we don't need to call STORE_SR
927	+	EmulatedSR = sr & 0x2700;
928	+	INC_PC(4);
929	+	break;
930	+	}
931	+
932	+	case 0x027c: { // andi #xxxx,sr
933	+	uint16 sr = GET_SR & pc[1];
934	+	STORE_SR(sr);
935	+	INC_PC(4);
936	+	break;
937	+	}
938	+
939	+	case 0x46fc: // move #xxxx,sr
940	+	STORE_SR(pc[1]);
941	+	INC_PC(4);
942	+	break;
943	+
944	+	case 0x46ef: { // move (xxxx,sp),sr
945	+	uint16 sr = ReadMacInt16(regs->a[7] + (int32)(int16)pc[1]);
946	+	STORE_SR(sr);
947	+	INC_PC(4);
948	+	break;
949	+	}
950	+
951	+	case 0x46d8: // move (a0)+,sr
952	+	case 0x46d9: { // move (a1)+,sr
953	+	uint16 sr = ReadMacInt16(regs->a[opcode & 7]);
954	+	STORE_SR(sr);
955	+	regs->a[opcode & 7] += 2;
956	+	INC_PC(2);
957	+	break;
958	+	}
959	+
960	+	case 0x40f8: // move sr,xxxx.w
961	+	WriteMacInt16(pc[1], GET_SR);
962	+	INC_PC(4);
963	+	break;
964	+
965	+	case 0x40d0: // move sr,(a0)
966	+	case 0x40d1: // move sr,(a1)
967	+	case 0x40d2: // move sr,(a2)
968	+	case 0x40d3: // move sr,(a3)
969	+	case 0x40d4: // move sr,(a4)
970	+	case 0x40d5: // move sr,(a5)
971	+	case 0x40d6: // move sr,(a6)
972	+	case 0x40d7: // move sr,(sp)
973	+	WriteMacInt16(regs->a[opcode & 7], GET_SR);
974	+	INC_PC(2);
975	+	break;
976	+
977	+	case 0x40c0: // move sr,d0
978	+	case 0x40c1: // move sr,d1
979	+	case 0x40c2: // move sr,d2
980	+	case 0x40c3: // move sr,d3
981	+	case 0x40c4: // move sr,d4
982	+	case 0x40c5: // move sr,d5
983	+	case 0x40c6: // move sr,d6
984	+	case 0x40c7: // move sr,d7
985	+	regs->d[opcode & 7] = GET_SR;
986	+	INC_PC(2);
987	+	break;
988	+
989	+	case 0x46c0: // move d0,sr
990	+	case 0x46c1: // move d1,sr
991	+	case 0x46c2: // move d2,sr
992	+	case 0x46c3: // move d3,sr
993	+	case 0x46c4: // move d4,sr
994	+	case 0x46c5: // move d5,sr
995	+	case 0x46c6: // move d6,sr
996	+	case 0x46c7: { // move d7,sr
997	+	uint16 sr = regs->d[opcode & 7];
998	+	STORE_SR(sr);
999	+	INC_PC(2);
1000	+	break;
1001	+	}
1002	+
1003	+	case 0xf327: // fsave -(sp)
1004	+	goto ill; //!!
1005	+
1006	+	case 0xf35f: // frestore (sp)+
1007	+	goto ill; //!!
1008	+
1009	+	case 0x4e73: { // rte (only handles format 0)
1010	+	uint32 a7 = regs->a[7];
1011	+	uint16 sr = ReadMacInt16(a7);
1012	+	a7 += 2;
1013	+	scp->sc_ps = sr & 0xff;
1014	+	EmulatedSR = sr & 0x2700;
1015	+	scp->sc_pc = ReadMacInt32(a7);
1016	+	a7 += 6;
1017	+	scp->sc_sp = regs->a[7] = a7;
1018	+	break;
1019	+	}
1020	+
1021	+	case 0x4e7a: // movec cr,x
1022	+	switch (pc[1]) {
1023	+	case 0x8801: // movec vbr,a0
1024	+	regs->a[0] = 0;
1025	+	break;
1026	+	case 0x9801: // movec vbr,a1
1027	+	regs->a[1] = 0;
1028	+	break;
1029	+	case 0x0002: // movec cacr,d0
1030	+	regs->d[0] = 0x3111;
1031	+	break;
1032	+	case 0x1002: // movec cacr,d1
1033	+	regs->d[1] = 0x3111;
1034	+	break;
1035	+	case 0x0003: // movec tc,d0
1036	+	regs->d[0] = 0;
1037	+	break;
1038	+	case 0x1003: // movec tc,d1
1039	+	regs->d[1] = 0;
1040	+	break;
1041	+	default:
1042	+	goto ill;
1043	+	}
1044	+	INC_PC(4);
1045	+	break;
1046	+
1047	+	case 0x4e7b: // movec x,cr
1048	+	switch (pc[1]) {
1049	+	case 0x0801: // movec d0,vbr
1050	+	break;
1051	+	case 0x0002: // movec d0,cacr
1052	+	case 0x1002: // movec d1,cacr
1053	+	FlushCodeCache(NULL, 0);
1054	+	break;
1055	+	default:
1056	+	goto ill;
1057	+	}
1058	+	INC_PC(4);
1059	+	break;
1060	+
1061	+	case 0xf478: // cpusha dc
1062	+	case 0xf4f8: // cpusha dc/ic
1063	+	FlushCodeCache(NULL, 0);
1064	+	INC_PC(2);
1065	+	break;
1066	+
1067	+	default:
1068	+	ill: printf("SIGILL num %d, code %d\n", sig, code);
1069	+	printf(" context %p:\n", scp);
1070	+	printf(" onstack %08x\n", scp->sc_onstack);
1071	+	printf(" sp %08x\n", scp->sc_sp);
1072	+	printf(" fp %08x\n", scp->sc_fp);
1073	+	printf(" pc %08x\n", scp->sc_pc);
1074	+	printf(" opcode %04x\n", opcode);
1075	+	printf(" sr %08x\n", scp->sc_ps);
1076	+	printf(" state %p:\n", state);
1077	+	printf(" flags %d\n", state->ss_flags);
1078	+	for (int i=0; i<8; i++)
1079	+	printf(" d%d %08x\n", i, state->ss_frame.f_regs[i]);
1080	+	for (int i=0; i<8; i++)
1081	+	printf(" a%d %08x\n", i, state->ss_frame.f_regs[i+8]);
1082	+
1083	+	#ifdef ENABLE_MON
1084	+	char *arg[2] = {"rmon", NULL};
1085	+	mon(1, arg);
1086	+	#endif
1087	+	QuitEmulator();
1088	+	break;
1089		}
449	–	return NULL;
1090		}
1091	+	#endif
1092
1093
1094		/*
1095		* Display alert
1096		*/
1097
1098	<	#if ENABLE_GTK
1098	>	#ifdef ENABLE_GTK
1099		static void dl_destroyed(void)
1100		{
1101		gtk_main_quit();
#	Line 499 \| Line 1140 \| void display_alert(int title_id, int pre
1140
1141		void ErrorAlert(const char *text)
1142		{
1143	<	#if ENABLE_GTK
1143	>	#ifdef ENABLE_GTK
1144		if (PrefsFindBool("nogui") \|\| x_display == NULL) {
1145		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
1146		return;
#	Line 518 \| Line 1159 \| *void ErrorAlert(const char text)**
1159
1160		void WarningAlert(const char *text)
1161		{
1162	<	#if ENABLE_GTK
1162	>	#ifdef ENABLE_GTK
1163		if (PrefsFindBool("nogui") \|\| x_display == NULL) {
1164		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
1165		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 1.16 by cebix, 2000-07-22T18:12:34Z

Diff Legend

Comparing BasiliskII/src/Unix/main_unix.cpp (file contents):
Revision 1.6 by cebix, 1999-10-27T16:59:46Z vs.
Revision 1.16 by cebix, 2000-07-22T18:12:34Z