src/Unix/main_unix.cpp

/*
 *  main_unix.cpp - Startup code for Unix
 *
 *  Basilisk II (C) 1997-1999 Christian Bauer
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include "sysdeps.h"

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <signal.h>

#include "cpu_emulation.h"
#include "sys.h"
#include "rom_patches.h"
#include "xpram.h"
#include "timer.h"
#include "video.h"
#include "prefs.h"
#include "prefs_editor.h"
#include "macos_util.h"
#include "user_strings.h"
#include "version.h"
#include "main.h"

#define DEBUG 0
#include "debug.h"


#include <X11/Xlib.h>

#if ENABLE_GTK
#include <gtk/gtk.h>
#endif

#if ENABLE_DGA
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/extensions/xf86dga.h>
#endif

#if ENABLE_MON
#include "mon.h"
#endif


// Constants
const char ROM_FILE_NAME[] = "ROM";


// CPU and FPU type, addressing mode
int CPUType;
bool CPUIs68060;
int FPUType;
bool TwentyFourBitAddressing;


// Global variables
static char *x_display_name = NULL;                                     // X11 display name
Display *x_display = NULL;                                                      // X11 display handle

static bool xpram_thread_active = false;                        // Flag: XPRAM watchdog installed
static volatile bool xpram_thread_cancel = false;       // Flag: Cancel XPRAM thread
static pthread_t xpram_thread;                                          // XPRAM watchdog

static bool tick_thread_active = false;                         // Flag: 60Hz thread installed
static volatile bool tick_thread_cancel = false;        // Flag: Cancel 60Hz thread
static pthread_t tick_thread;                                           // 60Hz thread
static pthread_attr_t tick_thread_attr;                         // 60Hz thread attributes

static pthread_mutex_t intflag_lock = PTHREAD_MUTEX_INITIALIZER;        // Mutex to protect InterruptFlags

#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
#define SIG_TIMER SIGRTMIN
static struct sigaction timer_sa;                                       // sigaction used for timer
static timer_t timer;                                                           // 60Hz timer
#endif

#if ENABLE_MON
static struct sigaction sigint_sa;                                      // sigaction for SIGINT handler
static void sigint_handler(...);
#endif


// Prototypes
static void *xpram_func(void *arg);
static void *tick_func(void *arg);
static void one_tick(...);


/*
 *  Ersatz functions
 */

extern "C" {

#ifndef HAVE_STRDUP
char *strdup(const char *s)
{
        char *n = (char *)malloc(strlen(s) + 1);
        strcpy(n, s);
        return n;
}
#endif

}


/*
 *  Main program
 */

int main(int argc, char **argv)
{
        // Initialize variables
        RAMBaseHost = NULL;
        ROMBaseHost = NULL;
        srand(time(NULL));
        tzset();

        // Print some info
        printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR);
        printf(" %s\n", GetString(STR_ABOUT_TEXT2));

        // Parse arguments
        for (int i=1; i<argc; i++) {
                if (strcmp(argv[i], "-display") == 0 && ++i < argc)
                        x_display_name = argv[i];
                else if (strcmp(argv[i], "-break") == 0 && ++i < argc)
                        ROMBreakpoint = strtol(argv[i], NULL, 0);
        }

        // Open display
        x_display = XOpenDisplay(x_display_name);
        if (x_display == NULL) {
                char str[256];
                sprintf(str, GetString(STR_NO_XSERVER_ERR), XDisplayName(x_display_name));
                ErrorAlert(str);
                QuitEmulator();
        }

#if ENABLE_DGA
        // Fork out, so we can return from fullscreen mode when things get ugly
        XF86DGAForkApp(DefaultScreen(x_display));
#endif

#if ENABLE_GTK
        // Init GTK
        gtk_set_locale();
        gtk_init(&argc, &argv);
#endif

        // Read preferences
        PrefsInit();

        // Init system routines
        SysInit();

        // Show preferences editor
        if (!PrefsFindBool("nogui"))
                if (!PrefsEditor())
                        QuitEmulator();

        // Create area for Mac RAM
        RAMSize = PrefsFindInt32("ramsize") & 0xfff00000;       // Round down to 1MB boundary
        if (RAMSize < 1024*1024) {
                WarningAlert(GetString(STR_SMALL_RAM_WARN));
                RAMSize = 1024*1024;
        }
        RAMBaseHost = new uint8[RAMSize];

        // Create area for Mac ROM
        ROMBaseHost = new uint8[0x100000];

        // Get rom file path from preferences
        const char *rom_path = PrefsFindString("rom");

        // Load Mac ROM
        int rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY);
        if (rom_fd < 0) {
                ErrorAlert(GetString(STR_NO_ROM_FILE_ERR));
                QuitEmulator();
        }
        printf(GetString(STR_READING_ROM_FILE));
        ROMSize = lseek(rom_fd, 0, SEEK_END);
        if (ROMSize != 64*1024 && ROMSize != 128*1024 && ROMSize != 256*1024 && ROMSize != 512*1024 && ROMSize != 1024*1024) {
                ErrorAlert(GetString(STR_ROM_SIZE_ERR));
                close(rom_fd);
                QuitEmulator();
        }
        lseek(rom_fd, 0, SEEK_SET);
        if (read(rom_fd, ROMBaseHost, ROMSize) != (ssize_t)ROMSize) {
                ErrorAlert(GetString(STR_ROM_FILE_READ_ERR));
                close(rom_fd);
                QuitEmulator();
        }

        // Initialize everything
        if (!InitAll())
                QuitEmulator();

        // Start XPRAM watchdog thread
        xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);

#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
        // Start 60Hz timer
        sigemptyset(&timer_sa.sa_mask);
        timer_sa.sa_flags = SA_SIGINFO | SA_RESTART;
        timer_sa.sa_sigaction = one_tick;
        if (sigaction(SIG_TIMER, &timer_sa, NULL) < 0) {
                printf("FATAL: cannot set up timer signal handler\n");
                QuitEmulator();
        }
        struct sigevent timer_event;
        timer_event.sigev_notify = SIGEV_SIGNAL;
        timer_event.sigev_signo = SIG_TIMER;
        if (timer_create(CLOCK_REALTIME, &timer_event, &timer) < 0) {
                printf("FATAL: cannot create timer\n");
                QuitEmulator();
        }
        struct itimerspec req;
        req.it_value.tv_sec = 0;
        req.it_value.tv_nsec = 16625000;
        req.it_interval.tv_sec = 0;
        req.it_interval.tv_nsec = 16625000;
        if (timer_settime(timer, TIMER_RELTIME, &req, NULL) < 0) {
                printf("FATAL: cannot start timer\n");
                QuitEmulator();
        }

#else

        // Start 60Hz thread
        pthread_attr_init(&tick_thread_attr);
#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
        if (geteuid() == 0) {
                pthread_attr_setinheritsched(&tick_thread_attr, PTHREAD_EXPLICIT_SCHED);
                pthread_attr_setschedpolicy(&tick_thread_attr, SCHED_FIFO);
                struct sched_param fifo_param;
                fifo_param.sched_priority = (sched_get_priority_min(SCHED_FIFO) + sched_get_priority_max(SCHED_FIFO)) / 2;
                pthread_attr_setschedparam(&tick_thread_attr, &fifo_param);
        }
#endif
        tick_thread_active = (pthread_create(&tick_thread, &tick_thread_attr, tick_func, NULL) == 0);
        if (!tick_thread_active) {
                printf("FATAL: cannot create tick thread\n");
                QuitEmulator();
        }
#endif

#if ENABLE_MON
        // Setup SIGINT handler to enter mon
        sigemptyset(&sigint_sa.sa_mask);
        sigint_sa.sa_flags = 0;
        sigint_sa.sa_handler = sigint_handler;
        sigaction(SIGINT, &sigint_sa, NULL);
#endif

        // Start 68k and jump to ROM boot routine
        Start680x0();

        QuitEmulator();
        return 0;
}


/*
 *  Quit emulator
 */

void QuitEmulator(void)
{
        // Exit 680x0 emulation
        Exit680x0();

#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
        // Stop 60Hz timer
        timer_delete(timer);
#else
        // Stop 60Hz thread
        if (tick_thread_active) {
                tick_thread_cancel = true;
#ifdef HAVE_PTHREAD_CANCEL
                pthread_cancel(tick_thread);
#endif
                pthread_join(tick_thread, NULL);
        }
#endif

        // Stop XPRAM watchdog thread
        if (xpram_thread_active) {
                xpram_thread_cancel = true;
#ifdef HAVE_PTHREAD_CANCEL
                pthread_cancel(xpram_thread);
#endif
                pthread_join(xpram_thread, NULL);
        }

        // Deinitialize everything
        ExitAll();

        // Delete ROM area
        delete[] ROMBaseHost;

        // Delete RAM area
        delete[] RAMBaseHost;

        // Exit system routines
        SysExit();

        // Exit preferences
        PrefsExit();

        // Close X11 server connection
        if (x_display)
                XCloseDisplay(x_display);

        exit(0);
}


/*
 *  Code was patched, flush caches if neccessary (i.e. when using a real 680x0
 *  or a dynamically recompiling emulator)
 */

#if EMULATED_68K
void FlushCodeCache(void *start, uint32 size)
{
}
#endif


/*
 *  SIGINT handler, enters mon
 */

#if ENABLE_MON
static void sigint_handler(...)
{
        char *arg[2] = {"rmon", NULL};
        mon(1, arg);
        QuitEmulator();
}
#endif


/*
 *  Interrupt flags (must be handled atomically!)
 */

uint32 InterruptFlags = 0;

void SetInterruptFlag(uint32 flag)
{
        pthread_mutex_lock(&intflag_lock);
        InterruptFlags |= flag;
        pthread_mutex_unlock(&intflag_lock);
}

void ClearInterruptFlag(uint32 flag)
{
        pthread_mutex_lock(&intflag_lock);
        InterruptFlags &= ~flag;
        pthread_mutex_unlock(&intflag_lock);
}


/*
 *  60Hz thread (really 60.15Hz)
 */

static void one_tick(...)
{
        static int tick_counter = 0;

        // Pseudo Mac 1Hz interrupt, update local time
        if (++tick_counter > 60) {
                tick_counter = 0;
                WriteMacInt32(0x20c, TimerDateTime());
        }

        // Trigger 60Hz interrupt
        if (ROMVersion != ROM_VERSION_CLASSIC || HasMacStarted()) {
                SetInterruptFlag(INTFLAG_60HZ);
                TriggerInterrupt();
        }
}

static void *tick_func(void *arg)
{
        while (!tick_thread_cancel) {

                // Wait
#ifdef HAVE_NANOSLEEP
                struct timespec req = {0, 16625000};
                nanosleep(&req, NULL);
#else
                usleep(16625);
#endif

                // Action
                one_tick();
        }
        return NULL;
}


/*
 *  XPRAM watchdog thread (saves XPRAM every minute)
 */

void *xpram_func(void *arg)
{
        uint8 last_xpram[256];
        memcpy(last_xpram, XPRAM, 256);

        while (!xpram_thread_cancel) {
                for (int i=0; i<60 && !xpram_thread_cancel; i++) {
#ifdef HAVE_NANOSLEEP
                        struct timespec req = {1, 0};
                        nanosleep(&req, NULL);
#else
                        usleep(1000000);
#endif
                }
                if (memcmp(last_xpram, XPRAM, 256)) {
                        memcpy(last_xpram, XPRAM, 256);
                        SaveXPRAM();
                }
        }
        return NULL;
}


/*
 *  Display alert
 */

#if ENABLE_GTK
static void dl_destroyed(void)
{
        gtk_main_quit();
}

static void dl_quit(GtkWidget *dialog)
{
        gtk_widget_destroy(dialog);
}

void display_alert(int title_id, int prefix_id, int button_id, const char *text)
{
        char str[256];
        sprintf(str, GetString(prefix_id), text);

        GtkWidget *dialog = gtk_dialog_new();
        gtk_window_set_title(GTK_WINDOW(dialog), GetString(title_id));
        gtk_container_border_width(GTK_CONTAINER(dialog), 5);
        gtk_widget_set_uposition(GTK_WIDGET(dialog), 100, 150);
        gtk_signal_connect(GTK_OBJECT(dialog), "destroy", GTK_SIGNAL_FUNC(dl_destroyed), NULL);

        GtkWidget *label = gtk_label_new(str);
        gtk_widget_show(label);
        gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), label, TRUE, TRUE, 0);

        GtkWidget *button = gtk_button_new_with_label(GetString(button_id));
        gtk_widget_show(button);
        gtk_signal_connect_object(GTK_OBJECT(button), "clicked", GTK_SIGNAL_FUNC(dl_quit), GTK_OBJECT(dialog));
        gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area), button, FALSE, FALSE, 0);
        GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
        gtk_widget_grab_default(button);
        gtk_widget_show(dialog);

        gtk_main();
}
#endif


/*
 *  Display error alert
 */

void ErrorAlert(const char *text)
{
#if ENABLE_GTK
        if (PrefsFindBool("nogui") || x_display == NULL) {
                printf(GetString(STR_SHELL_ERROR_PREFIX), text);
                return;
        }
        VideoQuitFullScreen();
        display_alert(STR_ERROR_ALERT_TITLE, STR_GUI_ERROR_PREFIX, STR_QUIT_BUTTON, text);
#else
        printf(GetString(STR_SHELL_ERROR_PREFIX), text);
#endif
}


/*
 *  Display warning alert
 */

void WarningAlert(const char *text)
{
#if ENABLE_GTK
        if (PrefsFindBool("nogui") || x_display == NULL) {
                printf(GetString(STR_SHELL_WARNING_PREFIX), text);
                return;
        }
        display_alert(STR_WARNING_ALERT_TITLE, STR_GUI_WARNING_PREFIX, STR_OK_BUTTON, text);
#else
        printf(GetString(STR_SHELL_WARNING_PREFIX), text);
#endif
}


/*
 *  Display choice alert
 */

bool ChoiceAlert(const char *text, const char *pos, const char *neg)
{
        printf(GetString(STR_SHELL_WARNING_PREFIX), text);
        return false;   //!!
}
Revision:	1.4
Committed:	1999-10-26T16:28:37Z (25 years ago) by cebix
Branch:	MAIN
Changes since 1.3:	+33 -0 lines
Log Message:	- mon is called for illegal EMUL_OP selectors and when pressing Ctrl-C (Unix) - moved MemoryDispatch() patch routine from PatchAfterStartup() to InstallDrivers() - fixed one place where ROM replaces MemoryDispatch() by unimplemented trap when no MMU is present - Unix: ROM breakpoint can now be set with "-break" command line argument - some changes to configure script, mon is now compiled with readline support
#	Content
1	/*
2	* main_unix.cpp - Startup code for Unix
3	*
4	* Basilisk II (C) 1997-1999 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
8	* the Free Software Foundation; either version 2 of the License, or
9	* (at your option) any later version.
10	*
11	* This program is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with this program; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19	*/
20
21	#include "sysdeps.h"
22
23	#include <stdio.h>
24	#include <stdlib.h>
25	#include <pthread.h>
26	#include <signal.h>
27
28	#include "cpu_emulation.h"
29	#include "sys.h"
30	#include "rom_patches.h"
31	#include "xpram.h"
32	#include "timer.h"
33	#include "video.h"
34	#include "prefs.h"
35	#include "prefs_editor.h"
36	#include "macos_util.h"
37	#include "user_strings.h"
38	#include "version.h"
39	#include "main.h"
40
41	#define DEBUG 0
42	#include "debug.h"
43
44
45	#include <X11/Xlib.h>
46
47	#if ENABLE_GTK
48	#include <gtk/gtk.h>
49	#endif
50
51	#if ENABLE_DGA
52	#include <X11/Xlib.h>
53	#include <X11/Xutil.h>
54	#include <X11/extensions/xf86dga.h>
55	#endif
56
57	#if ENABLE_MON
58	#include "mon.h"
59	#endif
60
61
62	// Constants
63	const char ROM_FILE_NAME[] = "ROM";
64
65
66	// CPU and FPU type, addressing mode
67	int CPUType;
68	bool CPUIs68060;
69	int FPUType;
70	bool TwentyFourBitAddressing;
71
72
73	// Global variables
74	static char *x_display_name = NULL; // X11 display name
75	Display *x_display = NULL; // X11 display handle
76
77	static bool xpram_thread_active = false; // Flag: XPRAM watchdog installed
78	static volatile bool xpram_thread_cancel = false; // Flag: Cancel XPRAM thread
79	static pthread_t xpram_thread; // XPRAM watchdog
80
81	static bool tick_thread_active = false; // Flag: 60Hz thread installed
82	static volatile bool tick_thread_cancel = false; // Flag: Cancel 60Hz thread
83	static pthread_t tick_thread; // 60Hz thread
84	static pthread_attr_t tick_thread_attr; // 60Hz thread attributes
85
86	static pthread_mutex_t intflag_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect InterruptFlags
87
88	#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
89	#define SIG_TIMER SIGRTMIN
90	static struct sigaction timer_sa; // sigaction used for timer
91	static timer_t timer; // 60Hz timer
92	#endif
93
94	#if ENABLE_MON
95	static struct sigaction sigint_sa; // sigaction for SIGINT handler
96	static void sigint_handler(...);
97	#endif
98
99
100	// Prototypes
101	static void xpram_func(void arg);
102	static void tick_func(void arg);
103	static void one_tick(...);
104
105
106	/*
107	* Ersatz functions
108	*/
109
110	extern "C" {
111
112	#ifndef HAVE_STRDUP
113	char strdup(const char s)
114	{
115	char n = (char )malloc(strlen(s) + 1);
116	strcpy(n, s);
117	return n;
118	}
119	#endif
120
121	}
122
123
124	/*
125	* Main program
126	*/
127
128	int main(int argc, char **argv)
129	{
130	// Initialize variables
131	RAMBaseHost = NULL;
132	ROMBaseHost = NULL;
133	srand(time(NULL));
134	tzset();
135
136	// Print some info
137	printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR);
138	printf(" %s\n", GetString(STR_ABOUT_TEXT2));
139
140	// Parse arguments
141	for (int i=1; i<argc; i++) {
142	if (strcmp(argv[i], "-display") == 0 && ++i < argc)
143	x_display_name = argv[i];
144	else if (strcmp(argv[i], "-break") == 0 && ++i < argc)
145	ROMBreakpoint = strtol(argv[i], NULL, 0);
146	}
147
148	// Open display
149	x_display = XOpenDisplay(x_display_name);
150	if (x_display == NULL) {
151	char str[256];
152	sprintf(str, GetString(STR_NO_XSERVER_ERR), XDisplayName(x_display_name));
153	ErrorAlert(str);
154	QuitEmulator();
155	}
156
157	#if ENABLE_DGA
158	// Fork out, so we can return from fullscreen mode when things get ugly
159	XF86DGAForkApp(DefaultScreen(x_display));
160	#endif
161
162	#if ENABLE_GTK
163	// Init GTK
164	gtk_set_locale();
165	gtk_init(&argc, &argv);
166	#endif
167
168	// Read preferences
169	PrefsInit();
170
171	// Init system routines
172	SysInit();
173
174	// Show preferences editor
175	if (!PrefsFindBool("nogui"))
176	if (!PrefsEditor())
177	QuitEmulator();
178
179	// Create area for Mac RAM
180	RAMSize = PrefsFindInt32("ramsize") & 0xfff00000; // Round down to 1MB boundary
181	if (RAMSize < 1024*1024) {
182	WarningAlert(GetString(STR_SMALL_RAM_WARN));
183	RAMSize = 1024*1024;
184	}
185	RAMBaseHost = new uint8[RAMSize];
186
187	// Create area for Mac ROM
188	ROMBaseHost = new uint8[0x100000];
189
190	// Get rom file path from preferences
191	const char *rom_path = PrefsFindString("rom");
192
193	// Load Mac ROM
194	int rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY);
195	if (rom_fd < 0) {
196	ErrorAlert(GetString(STR_NO_ROM_FILE_ERR));
197	QuitEmulator();
198	}
199	printf(GetString(STR_READING_ROM_FILE));
200	ROMSize = lseek(rom_fd, 0, SEEK_END);
201	if (ROMSize != 641024 && ROMSize != 1281024 && ROMSize != 2561024 && ROMSize != 5121024 && ROMSize != 1024*1024) {
202	ErrorAlert(GetString(STR_ROM_SIZE_ERR));
203	close(rom_fd);
204	QuitEmulator();
205	}
206	lseek(rom_fd, 0, SEEK_SET);
207	if (read(rom_fd, ROMBaseHost, ROMSize) != (ssize_t)ROMSize) {
208	ErrorAlert(GetString(STR_ROM_FILE_READ_ERR));
209	close(rom_fd);
210	QuitEmulator();
211	}
212
213	// Initialize everything
214	if (!InitAll())
215	QuitEmulator();
216
217	// Start XPRAM watchdog thread
218	xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
219
220	#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
221	// Start 60Hz timer
222	sigemptyset(&timer_sa.sa_mask);
223	timer_sa.sa_flags = SA_SIGINFO \| SA_RESTART;
224	timer_sa.sa_sigaction = one_tick;
225	if (sigaction(SIG_TIMER, &timer_sa, NULL) < 0) {
226	printf("FATAL: cannot set up timer signal handler\n");
227	QuitEmulator();
228	}
229	struct sigevent timer_event;
230	timer_event.sigev_notify = SIGEV_SIGNAL;
231	timer_event.sigev_signo = SIG_TIMER;
232	if (timer_create(CLOCK_REALTIME, &timer_event, &timer) < 0) {
233	printf("FATAL: cannot create timer\n");
234	QuitEmulator();
235	}
236	struct itimerspec req;
237	req.it_value.tv_sec = 0;
238	req.it_value.tv_nsec = 16625000;
239	req.it_interval.tv_sec = 0;
240	req.it_interval.tv_nsec = 16625000;
241	if (timer_settime(timer, TIMER_RELTIME, &req, NULL) < 0) {
242	printf("FATAL: cannot start timer\n");
243	QuitEmulator();
244	}
245
246	#else
247
248	// Start 60Hz thread
249	pthread_attr_init(&tick_thread_attr);
250	#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
251	if (geteuid() == 0) {
252	pthread_attr_setinheritsched(&tick_thread_attr, PTHREAD_EXPLICIT_SCHED);
253	pthread_attr_setschedpolicy(&tick_thread_attr, SCHED_FIFO);
254	struct sched_param fifo_param;
255	fifo_param.sched_priority = (sched_get_priority_min(SCHED_FIFO) + sched_get_priority_max(SCHED_FIFO)) / 2;
256	pthread_attr_setschedparam(&tick_thread_attr, &fifo_param);
257	}
258	#endif
259	tick_thread_active = (pthread_create(&tick_thread, &tick_thread_attr, tick_func, NULL) == 0);
260	if (!tick_thread_active) {
261	printf("FATAL: cannot create tick thread\n");
262	QuitEmulator();
263	}
264	#endif
265
266	#if ENABLE_MON
267	// Setup SIGINT handler to enter mon
268	sigemptyset(&sigint_sa.sa_mask);
269	sigint_sa.sa_flags = 0;
270	sigint_sa.sa_handler = sigint_handler;
271	sigaction(SIGINT, &sigint_sa, NULL);
272	#endif
273
274	// Start 68k and jump to ROM boot routine
275	Start680x0();
276
277	QuitEmulator();
278	return 0;
279	}
280
281
282	/*
283	* Quit emulator
284	*/
285
286	void QuitEmulator(void)
287	{
288	// Exit 680x0 emulation
289	Exit680x0();
290
291	#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
292	// Stop 60Hz timer
293	timer_delete(timer);
294	#else
295	// Stop 60Hz thread
296	if (tick_thread_active) {
297	tick_thread_cancel = true;
298	#ifdef HAVE_PTHREAD_CANCEL
299	pthread_cancel(tick_thread);
300	#endif
301	pthread_join(tick_thread, NULL);
302	}
303	#endif
304
305	// Stop XPRAM watchdog thread
306	if (xpram_thread_active) {
307	xpram_thread_cancel = true;
308	#ifdef HAVE_PTHREAD_CANCEL
309	pthread_cancel(xpram_thread);
310	#endif
311	pthread_join(xpram_thread, NULL);
312	}
313
314	// Deinitialize everything
315	ExitAll();
316
317	// Delete ROM area
318	delete[] ROMBaseHost;
319
320	// Delete RAM area
321	delete[] RAMBaseHost;
322
323	// Exit system routines
324	SysExit();
325
326	// Exit preferences
327	PrefsExit();
328
329	// Close X11 server connection
330	if (x_display)
331	XCloseDisplay(x_display);
332
333	exit(0);
334	}
335
336
337	/*
338	* Code was patched, flush caches if neccessary (i.e. when using a real 680x0
339	* or a dynamically recompiling emulator)
340	*/
341
342	#if EMULATED_68K
343	void FlushCodeCache(void *start, uint32 size)
344	{
345	}
346	#endif
347
348
349	/*
350	* SIGINT handler, enters mon
351	*/
352
353	#if ENABLE_MON
354	static void sigint_handler(...)
355	{
356	char *arg[2] = {"rmon", NULL};
357	mon(1, arg);
358	QuitEmulator();
359	}
360	#endif
361
362
363	/*
364	* Interrupt flags (must be handled atomically!)
365	*/
366
367	uint32 InterruptFlags = 0;
368
369	void SetInterruptFlag(uint32 flag)
370	{
371	pthread_mutex_lock(&intflag_lock);
372	InterruptFlags \|= flag;
373	pthread_mutex_unlock(&intflag_lock);
374	}
375
376	void ClearInterruptFlag(uint32 flag)
377	{
378	pthread_mutex_lock(&intflag_lock);
379	InterruptFlags &= ~flag;
380	pthread_mutex_unlock(&intflag_lock);
381	}
382
383
384	/*
385	* 60Hz thread (really 60.15Hz)
386	*/
387
388	static void one_tick(...)
389	{
390	static int tick_counter = 0;
391
392	// Pseudo Mac 1Hz interrupt, update local time
393	if (++tick_counter > 60) {
394	tick_counter = 0;
395	WriteMacInt32(0x20c, TimerDateTime());
396	}
397
398	// Trigger 60Hz interrupt
399	if (ROMVersion != ROM_VERSION_CLASSIC \|\| HasMacStarted()) {
400	SetInterruptFlag(INTFLAG_60HZ);
401	TriggerInterrupt();
402	}
403	}
404
405	static void tick_func(void arg)
406	{
407	while (!tick_thread_cancel) {
408
409	// Wait
410	#ifdef HAVE_NANOSLEEP
411	struct timespec req = {0, 16625000};
412	nanosleep(&req, NULL);
413	#else
414	usleep(16625);
415	#endif
416
417	// Action
418	one_tick();
419	}
420	return NULL;
421	}
422
423
424	/*
425	* XPRAM watchdog thread (saves XPRAM every minute)
426	*/
427
428	void xpram_func(void arg)
429	{
430	uint8 last_xpram[256];
431	memcpy(last_xpram, XPRAM, 256);
432
433	while (!xpram_thread_cancel) {
434	for (int i=0; i<60 && !xpram_thread_cancel; i++) {
435	#ifdef HAVE_NANOSLEEP
436	struct timespec req = {1, 0};
437	nanosleep(&req, NULL);
438	#else
439	usleep(1000000);
440	#endif
441	}
442	if (memcmp(last_xpram, XPRAM, 256)) {
443	memcpy(last_xpram, XPRAM, 256);
444	SaveXPRAM();
445	}
446	}
447	return NULL;
448	}
449
450
451	/*
452	* Display alert
453	*/
454
455	#if ENABLE_GTK
456	static void dl_destroyed(void)
457	{
458	gtk_main_quit();
459	}
460
461	static void dl_quit(GtkWidget *dialog)
462	{
463	gtk_widget_destroy(dialog);
464	}
465
466	void display_alert(int title_id, int prefix_id, int button_id, const char *text)
467	{
468	char str[256];
469	sprintf(str, GetString(prefix_id), text);
470
471	GtkWidget *dialog = gtk_dialog_new();
472	gtk_window_set_title(GTK_WINDOW(dialog), GetString(title_id));
473	gtk_container_border_width(GTK_CONTAINER(dialog), 5);
474	gtk_widget_set_uposition(GTK_WIDGET(dialog), 100, 150);
475	gtk_signal_connect(GTK_OBJECT(dialog), "destroy", GTK_SIGNAL_FUNC(dl_destroyed), NULL);
476
477	GtkWidget *label = gtk_label_new(str);
478	gtk_widget_show(label);
479	gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), label, TRUE, TRUE, 0);
480
481	GtkWidget *button = gtk_button_new_with_label(GetString(button_id));
482	gtk_widget_show(button);
483	gtk_signal_connect_object(GTK_OBJECT(button), "clicked", GTK_SIGNAL_FUNC(dl_quit), GTK_OBJECT(dialog));
484	gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area), button, FALSE, FALSE, 0);
485	GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
486	gtk_widget_grab_default(button);
487	gtk_widget_show(dialog);
488
489	gtk_main();
490	}
491	#endif
492
493
494	/*
495	* Display error alert
496	*/
497
498	void ErrorAlert(const char *text)
499	{
500	#if ENABLE_GTK
501	if (PrefsFindBool("nogui") \|\| x_display == NULL) {
502	printf(GetString(STR_SHELL_ERROR_PREFIX), text);
503	return;
504	}
505	VideoQuitFullScreen();
506	display_alert(STR_ERROR_ALERT_TITLE, STR_GUI_ERROR_PREFIX, STR_QUIT_BUTTON, text);
507	#else
508	printf(GetString(STR_SHELL_ERROR_PREFIX), text);
509	#endif
510	}
511
512
513	/*
514	* Display warning alert
515	*/
516
517	void WarningAlert(const char *text)
518	{
519	#if ENABLE_GTK
520	if (PrefsFindBool("nogui") \|\| x_display == NULL) {
521	printf(GetString(STR_SHELL_WARNING_PREFIX), text);
522	return;
523	}
524	display_alert(STR_WARNING_ALERT_TITLE, STR_GUI_WARNING_PREFIX, STR_OK_BUTTON, text);
525	#else
526	printf(GetString(STR_SHELL_WARNING_PREFIX), text);
527	#endif
528	}
529
530
531	/*
532	* Display choice alert
533	*/
534
535	bool ChoiceAlert(const char text, const char pos, const char *neg)
536	{
537	printf(GetString(STR_SHELL_WARNING_PREFIX), text);
538	return false; //!!
539	}