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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 1.21 by cebix, 2000-09-25T17:54:01Z

#	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 || DIRECT_ADDRESSING
34	+	# include <sys/mman.h>
35	+	#endif
36	+
37	+	#if !EMULATED_68K && defined(__NetBSD__)
38	+	# include <m68k/sync_icache.h>
39	+	# include <m68k/frame.h>
40	+	# include <sys/param.h>
41	+	# include <sys/sysctl.h>
42	+	struct sigstate {
43	+	int ss_flags;
44	+	struct frame ss_frame;
45	+	struct fpframe ss_fpstate;
46	+	};
47	+	# define SS_FPSTATE  0x02
48	+	# define SS_USERREGS 0x04
49	+	#endif
50	+
51	+	#ifdef ENABLE_GTK
52	+	# include <gtk/gtk.h>
53	+	#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 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 88 | 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	+	uint8 *ScratchMem = NULL;                       // Scratch memory for Mac ROM writes
137	+	#endif
138	+
139	+	#if USE_SCRATCHMEM_SUBTERFUGE
140	+	uint8 *ScratchMem = 0;                          // Scratch memory for Mac ROM writes
141	+	#endif
142	+
143	+	static struct sigaction timer_sa;       // sigaction used for timer
144
145		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
146		#define SIG_TIMER SIGRTMIN
147	<	static struct sigaction timer_sa;                                       // sigaction used for timer
96	<	static timer_t timer;                                                           // 60Hz timer
147	>	static timer_t timer;                           // 60Hz timer
148		#endif
149
150	<	#if ENABLE_MON
151	<	static struct sigaction sigint_sa;                                      // sigaction for SIGINT handler
150	>	#ifdef ENABLE_MON
151	>	static struct sigaction sigint_sa;      // sigaction for SIGINT handler
152		static void sigint_handler(...);
153		#endif
154
155	+	#if REAL_ADDRESSING
156	+	static bool lm_area_mapped = false;     // Flag: Low Memory area mmap()ped
157	+	static bool memory_mapped_from_zero = false; // Flag: Could allocate RAM area from 0
158	+	#endif
159	+
160	+	#ifdef USE_MAPPED_MEMORY
161	+	extern char *address_space, *good_address_map;
162	+	#endif
163	+
164
165		// Prototypes
166		static void *xpram_func(void *arg);
167		static void *tick_func(void *arg);
168		static void one_tick(...);
169	+	#if !EMULATED_68K
170	+	static void sigirq_handler(int sig, int code, struct sigcontext *scp);
171	+	static void sigill_handler(int sig, int code, struct sigcontext *scp);
172	+	extern "C" void EmulOpTrampoline(void);
173	+	#endif
174
175
176		/*
#	Line 132 | Line 197 | char *strdup(const char *s)
197
198		int main(int argc, char **argv)
199		{
200	+	char str[256];
201	+
202		// Initialize variables
203		RAMBaseHost = NULL;
204		ROMBaseHost = NULL;
#	Line 161 | Line 228 | int main(int argc, char **argv)
228		QuitEmulator();
229		}
230
231	<	#if ENABLE_XF86_DGA && !ENABLE_MON
231	>	#if defined(ENABLE_XF86_DGA) && !defined(ENABLE_MON)
232		// Fork out, so we can return from fullscreen mode when things get ugly
233		XF86DGAForkApp(DefaultScreen(x_display));
234		#endif
235
236	<	#if ENABLE_GTK
236	>	#ifdef ENABLE_GTK
237		// Init GTK
238		gtk_set_locale();
239		gtk_init(&argc, &argv);
#	Line 183 | Line 250 | int main(int argc, char **argv)
250		if (!PrefsEditor())
251		QuitEmulator();
252
253	+	// Open /dev/zero
254	+	zero_fd = open("/dev/zero", O_RDWR);
255	+	if (zero_fd < 0) {
256	+	sprintf(str, GetString(STR_NO_DEV_ZERO_ERR), strerror(errno));
257	+	ErrorAlert(str);
258	+	QuitEmulator();
259	+	}
260	+
261		// Read RAM size
262		RAMSize = PrefsFindInt32("ramsize") & 0xfff00000;       // Round down to 1MB boundary
263		if (RAMSize < 1024*1024) {
#	Line 190 | Line 265 | int main(int argc, char **argv)
265		RAMSize = 1024*1024;
266		}
267
268	+	#if REAL_ADDRESSING || DIRECT_ADDRESSING
269	+	const uint32 page_size = getpagesize();
270	+	const uint32 page_mask = page_size - 1;
271	+	const uint32 aligned_ram_size = (RAMSize + page_mask) & ~page_mask;
272	+	const uint32 ram_rom_size = aligned_ram_size + 0x100000;
273	+	#endif
274	+
275	+	#if REAL_ADDRESSING
276	+	// Try to allocate the complete address space from zero
277	+	// gb-- the Solaris manpage about mmap(2) states that using MAP_FIXED
278	+	// implies undefined behaviour for further use of sbrk(), malloc(), etc.
279	+	#if defined(OS_solaris)
280	+	// Anyway, it doesn't work...
281	+	if (0) {
282	+	#else
283	+	if (mmap((caddr_t)0x0000, ram_rom_size, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) != MAP_FAILED) {
284	+	#endif
285	+	D(bug("Could allocate RAM and ROM from 0x0000\n"));
286	+	memory_mapped_from_zero = true;
287	+	}
288	+	// Create Low Memory area (0x0000..0x2000)
289	+	else if (mmap((char *)0x0000, 0x2000, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0) != MAP_FAILED) {
290	+	D(bug("Could allocate the Low Memory globals\n"));
291	+	lm_area_mapped = true;
292	+	}
293	+	// Exit on error
294	+	else {
295	+	sprintf(str, GetString(STR_LOW_MEM_MMAP_ERR), strerror(errno));
296	+	ErrorAlert(str);
297	+	QuitEmulator();
298	+	}
299	+	#endif
300	+
301	+	#if !EMULATED_68K || USE_SCRATCHMEM_SUBTERFUGE
302	+	// Allocate scratch memory
303	+	ScratchMem = (uint8 *)malloc(SCRATCH_MEM_SIZE);
304	+	if (ScratchMem == NULL) {
305	+	ErrorAlert(GetString(STR_NO_MEM_ERR));
306	+	QuitEmulator();
307	+	}
308	+	ScratchMem += SCRATCH_MEM_SIZE/2;       // ScratchMem points to middle of block
309	+	#endif
310	+
311		// Create areas for Mac RAM and ROM
312	<	#ifdef USE_MAPPED_MEMORY
313	<	int fd = open("/dev/zero", O_RDWR);
314	<	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);
312	>	#if defined(USE_MAPPED_MEMORY)
313	>	good_address_map = (char *)mmap(NULL, 1<<24, PROT_READ, MAP_PRIVATE, zero_fd, 0);
314	>	address_space = (char *)mmap(NULL, 1<<24, PROT_READ | PROT_WRITE, MAP_PRIVATE, zero_fd, 0);
315		if ((int)address_space < 0 || (int)good_address_map < 0) {
316		ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
317		QuitEmulator();
318		}
319	<	RAMBaseHost = (uint8 *)mmap(address_space, RAMSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, fd, 0);
320	<	ROMBaseHost = (uint8 *)mmap(address_space + 0x00400000, 0x80000, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, fd, 0);
204	<	close(fd);
319	>	RAMBaseHost = (uint8 *)mmap(address_space, RAMSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, zero_fd, 0);
320	>	ROMBaseHost = (uint8 *)mmap(address_space + 0x00400000, 0x80000, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, zero_fd, 0);
321		char *nam = tmpnam(NULL);
322		int good_address_fd = open(nam, O_CREAT | O_RDWR, 0600);
323		char buffer[4096];
#	Line 212 | Line 328 | int main(int argc, char **argv)
328		mmap(good_address_map + i, 4096, PROT_READ, MAP_FIXED | MAP_PRIVATE, good_address_fd, 0);
329		for (int i=0; i<0x80000; i+=4096)
330		mmap(good_address_map + i + 0x00400000, 4096, PROT_READ, MAP_FIXED | MAP_PRIVATE, good_address_fd, 0);
331	+	#elif REAL_ADDRESSING || DIRECT_ADDRESSING
332	+	// gb-- Overkill, needs to be cleaned up. Probably explode it for either
333	+	// real or direct addressing mode.
334	+	#if REAL_ADDRESSING
335	+	if (memory_mapped_from_zero) {
336	+	RAMBaseHost = (uint8 *)0;
337	+	ROMBaseHost = RAMBaseHost + aligned_ram_size;
338	+	}
339	+	else
340	+	#endif
341	+	{
342	+	RAMBaseHost = (uint8 *)mmap(0, ram_rom_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, zero_fd, 0);
343	+	if (RAMBaseHost == (uint8 *)MAP_FAILED) {
344	+	ErrorAlert(GetString(STR_NO_MEM_ERR));
345	+	QuitEmulator();
346	+	}
347	+	ROMBaseHost = RAMBaseHost + aligned_ram_size;
348	+	}
349		#else
350	<	RAMBaseHost = new uint8[RAMSize];
351	<	ROMBaseHost = new uint8[0x100000];
350	>	RAMBaseHost = (uint8 *)malloc(RAMSize);
351	>	ROMBaseHost = (uint8 *)malloc(0x100000);
352	>	if (RAMBaseHost == NULL || ROMBaseHost == NULL) {
353	>	ErrorAlert(GetString(STR_NO_MEM_ERR));
354	>	QuitEmulator();
355	>	}
356		#endif
357	<
357	>	#if DIRECT_ADDRESSING
358	>	// Initialize MEMBaseDiff now so that Host2MacAddr in the Video module
359	>	// will return correct results
360	>	RAMBaseMac = 0;
361	>	ROMBaseMac = RAMBaseMac + aligned_ram_size;
362	>	InitMEMBaseDiff(RAMBaseHost, RAMBaseMac);
363	>	#endif
364	>	#if REAL_ADDRESSING // && !EMULATED_68K
365	>	RAMBaseMac = (uint32)RAMBaseHost;
366	>	ROMBaseMac = (uint32)ROMBaseHost;
367	>	#endif
368	>	D(bug("Mac RAM starts at %p (%08x)\n", RAMBaseHost, RAMBaseMac));
369	>	D(bug("Mac ROM starts at %p (%08x)\n", ROMBaseHost, ROMBaseMac));
370	>
371		// Get rom file path from preferences
372		const char *rom_path = PrefsFindString("rom");
373
#	Line 240 | Line 391 | int main(int argc, char **argv)
391		QuitEmulator();
392		}
393
394	+	#if !EMULATED_68K
395	+	// Get CPU model
396	+	int mib[2] = {CTL_HW, HW_MODEL};
397	+	char *model;
398	+	size_t model_len;
399	+	sysctl(mib, 2, NULL, &model_len, NULL, 0);
400	+	model = (char *)malloc(model_len);
401	+	sysctl(mib, 2, model, &model_len, NULL, 0);
402	+	D(bug("Model: %s\n", model));
403	+
404	+	// Set CPU and FPU type
405	+	CPUIs68060 = false;
406	+	if (strstr(model, "020"))
407	+	CPUType = 2;
408	+	else if (strstr(model, "030"))
409	+	CPUType = 3;
410	+	else if (strstr(model, "040"))
411	+	CPUType = 4;
412	+	else if (strstr(model, "060")) {
413	+	CPUType = 4;
414	+	CPUIs68060 = true;
415	+	} else {
416	+	printf("WARNING: Cannot detect CPU type, assuming 68020\n");
417	+	CPUType = 2;
418	+	}
419	+	FPUType = 0;    //!!
420	+	TwentyFourBitAddressing = false;
421	+	#endif
422	+
423		// Initialize everything
424		if (!InitAll())
425		QuitEmulator();
426	+	D(bug("Initialization complete\n"));
427
428	<	// Start XPRAM watchdog thread
429	<	xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
428	>	#ifdef HAVE_PTHREADS
429	>	// Get handle of main thread
430	>	emul_thread = pthread_self();
431	>	#endif
432	>
433	>	#if !EMULATED_68K
434	>	// (Virtual) supervisor mode, disable interrupts
435	>	EmulatedSR = 0x2700;
436	>
437	>	// Create and install stack for signal handlers
438	>	sig_stack = malloc(SIG_STACK_SIZE);
439	>	D(bug("Signal stack at %p\n", sig_stack));
440	>	if (sig_stack == NULL) {
441	>	ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
442	>	QuitEmulator();
443	>	}
444	>	stack_t new_stack;
445	>	new_stack.ss_sp = sig_stack;
446	>	new_stack.ss_flags = 0;
447	>	new_stack.ss_size = SIG_STACK_SIZE;
448	>	if (sigaltstack(&new_stack, NULL) < 0) {
449	>	sprintf(str, GetString(STR_SIGALTSTACK_ERR), strerror(errno));
450	>	ErrorAlert(str);
451	>	QuitEmulator();
452	>	}
453	>
454	>	// Install SIGILL handler for emulating privileged instructions and
455	>	// executing A-Trap and EMUL_OP opcodes
456	>	sigemptyset(&sigill_sa.sa_mask);        // Block virtual 68k interrupts during SIGILL handling
457	>	sigaddset(&sigill_sa.sa_mask, SIG_IRQ);
458	>	sigaddset(&sigill_sa.sa_mask, SIGALRM);
459	>	sigill_sa.sa_handler = (void (*)(int))sigill_handler;
460	>	sigill_sa.sa_flags = SA_ONSTACK;
461	>	if (sigaction(SIGILL, &sigill_sa, NULL) < 0) {
462	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGILL", strerror(errno));
463	>	ErrorAlert(str);
464	>	QuitEmulator();
465	>	}
466	>
467	>	// Install virtual 68k interrupt signal handler
468	>	sigemptyset(&sigirq_sa.sa_mask);
469	>	sigaddset(&sigirq_sa.sa_mask, SIGALRM);
470	>	sigirq_sa.sa_handler = (void (*)(int))sigirq_handler;
471	>	sigirq_sa.sa_flags = SA_ONSTACK | SA_RESTART;
472	>	if (sigaction(SIG_IRQ, &sigirq_sa, NULL) < 0) {
473	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_IRQ", strerror(errno));
474	>	ErrorAlert(str);
475	>	QuitEmulator();
476	>	}
477	>	#endif
478	>
479	>	#ifdef ENABLE_MON
480	>	// Setup SIGINT handler to enter mon
481	>	sigemptyset(&sigint_sa.sa_mask);
482	>	sigint_sa.sa_handler = (void (*)(int))sigint_handler;
483	>	sigint_sa.sa_flags = 0;
484	>	sigaction(SIGINT, &sigint_sa, NULL);
485	>	#endif
486
487		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
488	<	// Start 60Hz timer
488	>
489	>	// POSIX.4 timers and real-time signals available, start 60Hz timer
490		sigemptyset(&timer_sa.sa_mask);
491	+	timer_sa.sa_sigaction = (void (*)(int, siginfo_t *, void *))one_tick;
492		timer_sa.sa_flags = SA_SIGINFO | SA_RESTART;
254	–	timer_sa.sa_sigaction = one_tick;
493		if (sigaction(SIG_TIMER, &timer_sa, NULL) < 0) {
494	<	printf("FATAL: cannot set up timer signal handler\n");
494	>	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIG_TIMER", strerror(errno));
495	>	ErrorAlert(str);
496		QuitEmulator();
497		}
498		struct sigevent timer_event;
499		timer_event.sigev_notify = SIGEV_SIGNAL;
500		timer_event.sigev_signo = SIG_TIMER;
501		if (timer_create(CLOCK_REALTIME, &timer_event, &timer) < 0) {
502	<	printf("FATAL: cannot create timer\n");
502	>	sprintf(str, GetString(STR_TIMER_CREATE_ERR), strerror(errno));
503	>	ErrorAlert(str);
504		QuitEmulator();
505		}
506		struct itimerspec req;
#	Line 269 | Line 509 | int main(int argc, char **argv)
509		req.it_interval.tv_sec = 0;
510		req.it_interval.tv_nsec = 16625000;
511		if (timer_settime(timer, 0, &req, NULL) < 0) {
512	<	printf("FATAL: cannot start timer\n");
512	>	sprintf(str, GetString(STR_TIMER_SETTIME_ERR), strerror(errno));
513	>	ErrorAlert(str);
514		QuitEmulator();
515		}
516	+	D(bug("60Hz timer started\n"));
517
518	<	#else
518	>	#elif defined(HAVE_PTHREADS)
519
520	<	// Start 60Hz thread
520	>	// POSIX threads available, start 60Hz thread
521		pthread_attr_init(&tick_thread_attr);
522		#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
523		if (geteuid() == 0) {
#	Line 288 | Line 530 | int main(int argc, char **argv)
530		#endif
531		tick_thread_active = (pthread_create(&tick_thread, &tick_thread_attr, tick_func, NULL) == 0);
532		if (!tick_thread_active) {
533	<	printf("FATAL: cannot create tick thread\n");
533	>	sprintf(str, GetString(STR_TICK_THREAD_ERR), strerror(errno));
534	>	ErrorAlert(str);
535		QuitEmulator();
536		}
537	+	D(bug("60Hz thread started\n"));
538	+
539	+	#else
540	+
541	+	// Start 60Hz timer
542	+	sigemptyset(&timer_sa.sa_mask);         // Block virtual 68k interrupts during SIGARLM handling
543	+	sigaddset(&timer_sa.sa_mask, SIG_IRQ);
544	+	timer_sa.sa_handler = one_tick;
545	+	timer_sa.sa_flags = SA_ONSTACK | SA_RESTART;
546	+	if (sigaction(SIGALRM, &timer_sa, NULL) < 0) {
547	+	sprintf(str, GetString(STR_SIG_INSTALL_ERR), "SIGALRM", strerror(errno));
548	+	ErrorAlert(str);
549	+	QuitEmulator();
550	+	}
551	+	struct itimerval req;
552	+	req.it_interval.tv_sec = req.it_value.tv_sec = 0;
553	+	req.it_interval.tv_usec = req.it_value.tv_usec = 16625;
554	+	setitimer(ITIMER_REAL, &req, NULL);
555	+
556		#endif
557
558	<	#if ENABLE_MON
559	<	// Setup SIGINT handler to enter mon
560	<	sigemptyset(&sigint_sa.sa_mask);
561	<	sigint_sa.sa_flags = 0;
562	<	sigint_sa.sa_handler = sigint_handler;
301	<	sigaction(SIGINT, &sigint_sa, NULL);
558	>	#ifdef HAVE_PTHREADS
559	>	// Start XPRAM watchdog thread
560	>	memcpy(last_xpram, XPRAM, 256);
561	>	xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
562	>	D(bug("XPRAM thread started\n"));
563		#endif
564
565		// Start 68k and jump to ROM boot routine
566	+	D(bug("Starting emulation...\n"));
567		Start680x0();
568
569		QuitEmulator();
#	Line 315 | Line 577 | int main(int argc, char **argv)
577
578		void QuitEmulator(void)
579		{
580	+	D(bug("QuitEmulator\n"));
581	+
582	+	#if EMULATED_68K
583		// Exit 680x0 emulation
584		Exit680x0();
585	+	#endif
586
587		#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
588		// Stop 60Hz timer
589		timer_delete(timer);
590	<	#else
590	>	#elif defined(HAVE_PTHREADS)
591		// Stop 60Hz thread
592		if (tick_thread_active) {
593		tick_thread_cancel = true;
#	Line 330 | Line 596 | void QuitEmulator(void)
596		#endif
597		pthread_join(tick_thread, NULL);
598		}
599	+	#else
600	+	struct itimerval req;
601	+	req.it_interval.tv_sec = req.it_value.tv_sec = 0;
602	+	req.it_interval.tv_usec = req.it_value.tv_usec = 0;
603	+	setitimer(ITIMER_REAL, &req, NULL);
604		#endif
605
606	+	#ifdef HAVE_PTHREADS
607		// Stop XPRAM watchdog thread
608		if (xpram_thread_active) {
609		xpram_thread_cancel = true;
#	Line 340 | Line 612 | void QuitEmulator(void)
612		#endif
613		pthread_join(xpram_thread, NULL);
614		}
615	+	#endif
616
617		// Deinitialize everything
618		ExitAll();
619
620	+	#if REAL_ADDRESSING || DIRECT_ADDRESSING
621	+	// Unmap ROM area
622	+	if (ROMBaseHost != (uint8 *)MAP_FAILED) {
623	+	munmap((caddr_t)ROMBaseHost, 0x100000);
624	+	ROMBaseHost = 0;
625	+	}
626	+
627	+	//Unmap RAM area
628	+	if (RAMBaseHost != (uint8 *)MAP_FAILED) {
629	+	const uint32 page_size = getpagesize();
630	+	const uint32 page_mask = page_size - 1;
631	+	munmap((caddr_t)RAMBaseHost, ((RAMSize + page_mask) & ~page_mask));
632	+	}
633	+	#else
634		// Delete ROM area
635	<	delete[] ROMBaseHost;
635	>	if (ROMBaseHost) {
636	>	free(ROMBaseHost);
637	>	ROMBaseHost = NULL;
638	>	}
639
640		// Delete RAM area
641	<	delete[] RAMBaseHost;
641	>	if (RAMBaseHost) {
642	>	free(RAMBaseHost);
643	>	RAMBaseHost = NULL;
644	>	}
645	>	#endif
646	>
647	>	#if !EMULATED_68K || USE_SCRATMEM_SUBTERFUGE
648	>	// Delete scratch memory area
649	>	if (ScratchMem) {
650	>	free((void *)(ScratchMem - SCRATCH_MEM_SIZE/2));
651	>	ScratchMem = NULL;
652	>	}
653	>	#endif
654	>
655	>	#if REAL_ADDRESSING
656	>	// Delete Low Memory area
657	>	if (lm_area_mapped)
658	>	munmap((char *)0x0000, 0x2000);
659	>	#endif
660	>
661	>	// Close /dev/zero
662	>	if (zero_fd > 0)
663	>	close(zero_fd);
664
665		// Exit system routines
666		SysExit();
#	Line 369 | Line 681 | void QuitEmulator(void)
681		*  or a dynamically recompiling emulator)
682		*/
683
372	–	#if EMULATED_68K
684		void FlushCodeCache(void *start, uint32 size)
685		{
686	<	}
686	>	#if !EMULATED_68K && defined(__NetBSD__)
687	>	m68k_sync_icache(start, size);
688		#endif
689	+	}
690
691
692		/*
693		*  SIGINT handler, enters mon
694		*/
695
696	<	#if ENABLE_MON
384	<	extern void m68k_dumpstate(uaecptr *nextpc);
696	>	#ifdef ENABLE_MON
697		static void sigint_handler(...)
698		{
699	+	#if EMULATED_68K
700		uaecptr nextpc;
701	+	extern void m68k_dumpstate(uaecptr *nextpc);
702		m68k_dumpstate(&nextpc);
703	<	char *arg[2] = {"rmon", NULL};
704	<	mon(1, arg);
703	>	#else
704	>	char *arg[4] = {"mon", "-m", "-r", NULL};
705	>	mon(3, arg);
706		QuitEmulator();
707	+	#endif
708		}
709		#endif
710
#	Line 399 | Line 715 | static void sigint_handler(...)
715
716		uint32 InterruptFlags = 0;
717
718	+	#if EMULATED_68K
719		void SetInterruptFlag(uint32 flag)
720		{
721	+	#ifdef HAVE_PTHREADS
722		pthread_mutex_lock(&intflag_lock);
723		InterruptFlags |= flag;
724		pthread_mutex_unlock(&intflag_lock);
725	+	#else
726	+	InterruptFlags |= flag;         // Pray that this is an atomic operation...
727	+	#endif
728		}
729
730		void ClearInterruptFlag(uint32 flag)
731		{
732	+	#ifdef HAVE_PTHREADS
733		pthread_mutex_lock(&intflag_lock);
734		InterruptFlags &= ~flag;
735		pthread_mutex_unlock(&intflag_lock);
736	+	#else
737	+	InterruptFlags &= ~flag;
738	+	#endif
739		}
740	+	#endif
741	+
742	+	#if !EMULATED_68K
743	+	void TriggerInterrupt(void)
744	+	{
745	+	#if defined(HAVE_PTHREADS)
746	+	pthread_kill(emul_thread, SIG_IRQ);
747	+	#else
748	+	raise(SIG_IRQ);
749	+	#endif
750	+	}
751	+	#endif
752	+
753	+
754	+	/*
755	+	*  XPRAM watchdog thread (saves XPRAM every minute)
756	+	*/
757	+
758	+	static void xpram_watchdog(void)
759	+	{
760	+	if (memcmp(last_xpram, XPRAM, 256)) {
761	+	memcpy(last_xpram, XPRAM, 256);
762	+	SaveXPRAM();
763	+	}
764	+	}
765	+
766	+	#ifdef HAVE_PTHREADS
767	+	static void *xpram_func(void *arg)
768	+	{
769	+	while (!xpram_thread_cancel) {
770	+	for (int i=0; i<60 && !xpram_thread_cancel; i++)
771	+	Delay_usec(1000000);
772	+	xpram_watchdog();
773	+	}
774	+	return NULL;
775	+	}
776	+	#endif
777
778
779		/*
780		*  60Hz thread (really 60.15Hz)
781		*/
782
783	+	static void one_second(void)
784	+	{
785	+	// Pseudo Mac 1Hz interrupt, update local time
786	+	WriteMacInt32(0x20c, TimerDateTime());
787	+
788	+	SetInterruptFlag(INTFLAG_1HZ);
789	+	TriggerInterrupt();
790	+
791	+	#ifndef HAVE_PTHREADS
792	+	static int second_counter = 0;
793	+	if (++second_counter > 60) {
794	+	second_counter = 0;
795	+	xpram_watchdog();
796	+	}
797	+	#endif
798	+	}
799	+
800		static void one_tick(...)
801		{
802		static int tick_counter = 0;
424	–
425	–	// Pseudo Mac 1Hz interrupt, update local time
803		if (++tick_counter > 60) {
804		tick_counter = 0;
805	<	WriteMacInt32(0x20c, TimerDateTime());
805	>	one_second();
806		}
807
808	+	#ifndef HAVE_PTHREADS
809	+	// No threads available, perform video refresh from here
810	+	VideoRefresh();
811	+	#endif
812	+
813		// Trigger 60Hz interrupt
814		if (ROMVersion != ROM_VERSION_CLASSIC || HasMacStarted()) {
815		SetInterruptFlag(INTFLAG_60HZ);
#	Line 435 | Line 817 | static void one_tick(...)
817		}
818		}
819
820	+	#ifdef HAVE_PTHREADS
821		static void *tick_func(void *arg)
822		{
823	+	uint64 next = GetTicks_usec();
824		while (!tick_thread_cancel) {
441	–
442	–	// Wait
443	–	#ifdef HAVE_NANOSLEEP
444	–	struct timespec req = {0, 16625000};
445	–	nanosleep(&req, NULL);
446	–	#else
447	–	usleep(16625);
448	–	#endif
449	–
450	–	// Action
825		one_tick();
826	+	next += 16625;
827	+	int64 delay = next - GetTicks_usec();
828	+	if (delay > 0)
829	+	Delay_usec(delay);
830	+	else if (delay < -16625)
831	+	next = GetTicks_usec();
832		}
833		return NULL;
834		}
835	+	#endif
836
837
838		/*
839	<	*  XPRAM watchdog thread (saves XPRAM every minute)
839	>	*  Get current value of microsecond timer
840		*/
841
842	<	void *xpram_func(void *arg)
842	>	uint64 GetTicks_usec(void)
843		{
844	<	uint8 last_xpram[256];
845	<	memcpy(last_xpram, XPRAM, 256);
844	>	#ifdef HAVE_CLOCK_GETTIME
845	>	struct timespec t;
846	>	clock_gettime(CLOCK_REALTIME, &t);
847	>	return (uint64)t.tv_sec * 1000000 + t.tv_nsec / 1000;
848	>	#else
849	>	struct timeval t;
850	>	gettimeofday(&t, NULL);
851	>	return (uint64)t.tv_sec * 1000000 + t.tv_usec;
852	>	#endif
853	>	}
854
855	<	while (!xpram_thread_cancel) {
856	<	for (int i=0; i<60 && !xpram_thread_cancel; i++) {
857	<	#ifdef HAVE_NANOSLEEP
858	<	struct timespec req = {1, 0};
859	<	nanosleep(&req, NULL);
855	>
856	>	/*
857	>	*  Delay by specified number of microseconds (<1 second)
858	>	*  (adapted from SDL_Delay() source)
859	>	*/
860	>
861	>	void Delay_usec(uint32 usec)
862	>	{
863	>	int was_error;
864	>	#ifndef __linux__       // Non-Linux implementations need to calculate time left
865	>	uint64 then, now, elapsed;
866	>	#endif
867	>	struct timeval tv;
868	>
869	>	// Set the timeout interval - Linux only needs to do this once
870	>	#ifdef __linux__
871	>	tv.tv_sec = 0;
872	>	tv.tv_usec = usec;
873		#else
874	<	usleep(1000000);
874	>	then = GetTicks_usec();
875		#endif
876	+	do {
877	+	errno = 0;
878	+	#ifndef __linux__
879	+	/* Calculate the time interval left (in case of interrupt) */
880	+	now = GetTicks_usec();
881	+	elapsed = now - then;
882	+	then = now;
883	+	if (elapsed >= usec)
884	+	break;
885	+	usec -= elapsed;
886	+	tv.tv_sec = 0;
887	+	tv.tv_usec = usec;
888	+	#endif
889	+	was_error = select(0, NULL, NULL, NULL, &tv);
890	+	} while (was_error && (errno == EINTR));
891	+	}
892	+
893	+
894	+	#if !EMULATED_68K
895	+	/*
896	+	*  Virtual 68k interrupt handler
897	+	*/
898	+
899	+	static void sigirq_handler(int sig, int code, struct sigcontext *scp)
900	+	{
901	+	// Interrupts disabled? Then do nothing
902	+	if (EmulatedSR & 0x0700)
903	+	return;
904	+
905	+	struct sigstate *state = (struct sigstate *)scp->sc_ap;
906	+	M68kRegisters *regs = (M68kRegisters *)&state->ss_frame;
907	+
908	+	// Set up interrupt frame on stack
909	+	uint32 a7 = regs->a[7];
910	+	a7 -= 2;
911	+	WriteMacInt16(a7, 0x64);
912	+	a7 -= 4;
913	+	WriteMacInt32(a7, scp->sc_pc);
914	+	a7 -= 2;
915	+	WriteMacInt16(a7, scp->sc_ps | EmulatedSR);
916	+	scp->sc_sp = regs->a[7] = a7;
917	+
918	+	// Set interrupt level
919	+	EmulatedSR |= 0x2100;
920	+
921	+	// Jump to MacOS interrupt handler on return
922	+	scp->sc_pc = ReadMacInt32(0x64);
923	+	}
924	+
925	+
926	+	/*
927	+	*  SIGILL handler, for emulation of privileged instructions and executing
928	+	*  A-Trap and EMUL_OP opcodes
929	+	*/
930	+
931	+	static void sigill_handler(int sig, int code, struct sigcontext *scp)
932	+	{
933	+	struct sigstate *state = (struct sigstate *)scp->sc_ap;
934	+	uint16 *pc = (uint16 *)scp->sc_pc;
935	+	uint16 opcode = *pc;
936	+	M68kRegisters *regs = (M68kRegisters *)&state->ss_frame;
937	+
938	+	#define INC_PC(n) scp->sc_pc += (n)
939	+
940	+	#define GET_SR (scp->sc_ps | EmulatedSR)
941	+
942	+	#define STORE_SR(v) \
943	+	scp->sc_ps = (v) & 0xff; \
944	+	EmulatedSR = (v) & 0x2700; \
945	+	if (((v) & 0x0700) == 0 && InterruptFlags) \
946	+	TriggerInterrupt();
947	+
948	+	//printf("opcode %04x at %p, sr %04x, emul_sr %04x\n", opcode, pc, scp->sc_ps, EmulatedSR);
949	+
950	+	if ((opcode & 0xf000) == 0xa000) {
951	+
952	+	// A-Line instruction, set up A-Line trap frame on stack
953	+	uint32 a7 = regs->a[7];
954	+	a7 -= 2;
955	+	WriteMacInt16(a7, 0x28);
956	+	a7 -= 4;
957	+	WriteMacInt32(a7, (uint32)pc);
958	+	a7 -= 2;
959	+	WriteMacInt16(a7, GET_SR);
960	+	scp->sc_sp = regs->a[7] = a7;
961	+
962	+	// Jump to MacOS A-Line handler on return
963	+	scp->sc_pc = ReadMacInt32(0x28);
964	+
965	+	} else if ((opcode & 0xff00) == 0x7100) {
966	+
967	+	// Extended opcode, push registers on user stack
968	+	uint32 a7 = regs->a[7];
969	+	a7 -= 4;
970	+	WriteMacInt32(a7, (uint32)pc);
971	+	a7 -= 2;
972	+	WriteMacInt16(a7, scp->sc_ps);
973	+	for (int i=7; i>=0; i--) {
974	+	a7 -= 4;
975	+	WriteMacInt32(a7, regs->a[i]);
976	+	}
977	+	for (int i=7; i>=0; i--) {
978	+	a7 -= 4;
979	+	WriteMacInt32(a7, regs->d[i]);
980	+	}
981	+	scp->sc_sp = regs->a[7] = a7;
982	+
983	+	// Jump to EmulOp trampoline code on return
984	+	scp->sc_pc = (uint32)EmulOpTrampoline;
985	+
986	+	} else switch (opcode) {        // Emulate privileged instructions
987	+
988	+	case 0x40e7:    // move sr,-(sp)
989	+	regs->a[7] -= 2;
990	+	WriteMacInt16(regs->a[7], GET_SR);
991	+	scp->sc_sp = regs->a[7];
992	+	INC_PC(2);
993	+	break;
994	+
995	+	case 0x46df: {  // move (sp)+,sr
996	+	uint16 sr = ReadMacInt16(regs->a[7]);
997	+	STORE_SR(sr);
998	+	regs->a[7] += 2;
999	+	scp->sc_sp = regs->a[7];
1000	+	INC_PC(2);
1001	+	break;
1002	+	}
1003	+
1004	+	case 0x007c: {  // ori #xxxx,sr
1005	+	uint16 sr = GET_SR | pc[1];
1006	+	scp->sc_ps = sr & 0xff;         // oring bits into the sr can't enable interrupts, so we don't need to call STORE_SR
1007	+	EmulatedSR = sr & 0x2700;
1008	+	INC_PC(4);
1009	+	break;
1010		}
1011	<	if (memcmp(last_xpram, XPRAM, 256)) {
1012	<	memcpy(last_xpram, XPRAM, 256);
1013	<	SaveXPRAM();
1011	>
1012	>	case 0x027c: {  // andi #xxxx,sr
1013	>	uint16 sr = GET_SR & pc[1];
1014	>	STORE_SR(sr);
1015	>	INC_PC(4);
1016	>	break;
1017		}
1018	+
1019	+	case 0x46fc:    // move #xxxx,sr
1020	+	STORE_SR(pc[1]);
1021	+	INC_PC(4);
1022	+	break;
1023	+
1024	+	case 0x46ef: {  // move (xxxx,sp),sr
1025	+	uint16 sr = ReadMacInt16(regs->a[7] + (int32)(int16)pc[1]);
1026	+	STORE_SR(sr);
1027	+	INC_PC(4);
1028	+	break;
1029	+	}
1030	+
1031	+	case 0x46d8:    // move (a0)+,sr
1032	+	case 0x46d9: {  // move (a1)+,sr
1033	+	uint16 sr = ReadMacInt16(regs->a[opcode & 7]);
1034	+	STORE_SR(sr);
1035	+	regs->a[opcode & 7] += 2;
1036	+	INC_PC(2);
1037	+	break;
1038	+	}
1039	+
1040	+	case 0x40f8:    // move sr,xxxx.w
1041	+	WriteMacInt16(pc[1], GET_SR);
1042	+	INC_PC(4);
1043	+	break;
1044	+
1045	+	case 0x40d0:    // move sr,(a0)
1046	+	case 0x40d1:    // move sr,(a1)
1047	+	case 0x40d2:    // move sr,(a2)
1048	+	case 0x40d3:    // move sr,(a3)
1049	+	case 0x40d4:    // move sr,(a4)
1050	+	case 0x40d5:    // move sr,(a5)
1051	+	case 0x40d6:    // move sr,(a6)
1052	+	case 0x40d7:    // move sr,(sp)
1053	+	WriteMacInt16(regs->a[opcode & 7], GET_SR);
1054	+	INC_PC(2);
1055	+	break;
1056	+
1057	+	case 0x40c0:    // move sr,d0
1058	+	case 0x40c1:    // move sr,d1
1059	+	case 0x40c2:    // move sr,d2
1060	+	case 0x40c3:    // move sr,d3
1061	+	case 0x40c4:    // move sr,d4
1062	+	case 0x40c5:    // move sr,d5
1063	+	case 0x40c6:    // move sr,d6
1064	+	case 0x40c7:    // move sr,d7
1065	+	regs->d[opcode & 7] = GET_SR;
1066	+	INC_PC(2);
1067	+	break;
1068	+
1069	+	case 0x46c0:    // move d0,sr
1070	+	case 0x46c1:    // move d1,sr
1071	+	case 0x46c2:    // move d2,sr
1072	+	case 0x46c3:    // move d3,sr
1073	+	case 0x46c4:    // move d4,sr
1074	+	case 0x46c5:    // move d5,sr
1075	+	case 0x46c6:    // move d6,sr
1076	+	case 0x46c7: {  // move d7,sr
1077	+	uint16 sr = regs->d[opcode & 7];
1078	+	STORE_SR(sr);
1079	+	INC_PC(2);
1080	+	break;
1081	+	}
1082	+
1083	+	case 0xf327:    // fsave -(sp)
1084	+	goto ill;       //!!
1085	+
1086	+	case 0xf35f:    // frestore (sp)+
1087	+	goto ill;       //!!
1088	+
1089	+	case 0x4e73: {  // rte (only handles format 0)
1090	+	uint32 a7 = regs->a[7];
1091	+	uint16 sr = ReadMacInt16(a7);
1092	+	a7 += 2;
1093	+	scp->sc_ps = sr & 0xff;
1094	+	EmulatedSR = sr & 0x2700;
1095	+	scp->sc_pc = ReadMacInt32(a7);
1096	+	a7 += 6;
1097	+	scp->sc_sp = regs->a[7] = a7;
1098	+	break;
1099	+	}
1100	+
1101	+	case 0x4e7a:    // movec cr,x
1102	+	switch (pc[1]) {
1103	+	case 0x8801:    // movec vbr,a0
1104	+	regs->a[0] = 0;
1105	+	break;
1106	+	case 0x9801:    // movec vbr,a1
1107	+	regs->a[1] = 0;
1108	+	break;
1109	+	case 0x0002:    // movec cacr,d0
1110	+	regs->d[0] = 0x3111;
1111	+	break;
1112	+	case 0x1002:    // movec cacr,d1
1113	+	regs->d[1] = 0x3111;
1114	+	break;
1115	+	case 0x0003:    // movec tc,d0
1116	+	regs->d[0] = 0;
1117	+	break;
1118	+	case 0x1003:    // movec tc,d1
1119	+	regs->d[1] = 0;
1120	+	break;
1121	+	default:
1122	+	goto ill;
1123	+	}
1124	+	INC_PC(4);
1125	+	break;
1126	+
1127	+	case 0x4e7b:    // movec x,cr
1128	+	switch (pc[1]) {
1129	+	case 0x0801:    // movec d0,vbr
1130	+	break;
1131	+	case 0x0002:    // movec d0,cacr
1132	+	case 0x1002:    // movec d1,cacr
1133	+	FlushCodeCache(NULL, 0);
1134	+	break;
1135	+	default:
1136	+	goto ill;
1137	+	}
1138	+	INC_PC(4);
1139	+	break;
1140	+
1141	+	case 0xf478:    // cpusha dc
1142	+	case 0xf4f8:    // cpusha dc/ic
1143	+	FlushCodeCache(NULL, 0);
1144	+	INC_PC(2);
1145	+	break;
1146	+
1147	+	default:
1148	+	ill:            printf("SIGILL num %d, code %d\n", sig, code);
1149	+	printf(" context %p:\n", scp);
1150	+	printf("  onstack %08x\n", scp->sc_onstack);
1151	+	printf("  sp %08x\n", scp->sc_sp);
1152	+	printf("  fp %08x\n", scp->sc_fp);
1153	+	printf("  pc %08x\n", scp->sc_pc);
1154	+	printf("   opcode %04x\n", opcode);
1155	+	printf("  sr %08x\n", scp->sc_ps);
1156	+	printf(" state %p:\n", state);
1157	+	printf("  flags %d\n", state->ss_flags);
1158	+	for (int i=0; i<8; i++)
1159	+	printf("  d%d %08x\n", i, state->ss_frame.f_regs[i]);
1160	+	for (int i=0; i<8; i++)
1161	+	printf("  a%d %08x\n", i, state->ss_frame.f_regs[i+8]);
1162	+
1163	+	#ifdef ENABLE_MON
1164	+	char *arg[4] = {"mon", "-m", "-r", NULL};
1165	+	mon(3, arg);
1166	+	#endif
1167	+	QuitEmulator();
1168	+	break;
1169		}
480	–	return NULL;
1170		}
1171	+	#endif
1172
1173
1174		/*
1175		*  Display alert
1176		*/
1177
1178	<	#if ENABLE_GTK
1178	>	#ifdef ENABLE_GTK
1179		static void dl_destroyed(void)
1180		{
1181		gtk_main_quit();
#	Line 530 | Line 1220 | void display_alert(int title_id, int pre
1220
1221		void ErrorAlert(const char *text)
1222		{
1223	<	#if ENABLE_GTK
1223	>	#ifdef ENABLE_GTK
1224		if (PrefsFindBool("nogui") || x_display == NULL) {
1225		printf(GetString(STR_SHELL_ERROR_PREFIX), text);
1226		return;
#	Line 549 | Line 1239 | void ErrorAlert(const char *text)
1239
1240		void WarningAlert(const char *text)
1241		{
1242	<	#if ENABLE_GTK
1242	>	#ifdef ENABLE_GTK
1243		if (PrefsFindBool("nogui") || x_display == NULL) {
1244		printf(GetString(STR_SHELL_WARNING_PREFIX), text);
1245		return;

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