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
#	User	Rev	Content
1	cebix	1.1	/*
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	cebix	1.3	#include "rom_patches.h"
31	cebix	1.1	#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	cebix	1.3	#define DEBUG 0
42	cebix	1.1	#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	cebix	1.4	#if ENABLE_MON
58			#include "mon.h"
59			#endif
60
61	cebix	1.1
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	cebix	1.4	#if ENABLE_MON
95			static struct sigaction sigint_sa; // sigaction for SIGINT handler
96			static void sigint_handler(...);
97			#endif
98
99	cebix	1.1
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	cebix	1.4	else if (strcmp(argv[i], "-break") == 0 && ++i < argc)
145			ROMBreakpoint = strtol(argv[i], NULL, 0);
146	cebix	1.1	}
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	cebix	1.2	XF86DGAForkApp(DefaultScreen(x_display));
160	cebix	1.1	#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	cebix	1.3	// Initialize everything
214			if (!InitAll())
215	cebix	1.1	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	cebix	1.4	#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	cebix	1.1	// 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	cebix	1.3	// Deinitialize everything
315			ExitAll();
316	cebix	1.1
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	cebix	1.4	}
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	cebix	1.1	}
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			}