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_XF86_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);
                else if (strcmp(argv[i], "-rominfo") == 0)
                        PrintROMInfo = true;
        }

        // 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_XF86_DGA && !ENABLE_MON
        // 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
extern void m68k_dumpstate(uaecptr *nextpc);
static void sigint_handler(...)
{
        uaecptr nextpc;
        m68k_dumpstate(&nextpc);
        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:	1.8
Committed:	1999-10-31T23:18:36Z (24 years, 8 months ago) by cebix
Branch:	MAIN
CVS Tags:	snapshot-02111999
Changes since 1.7:	+3 -0 lines
Log Message:	- removed MemoryDispatch() replacement; routine from ROM is now used if possible - rom_patches.cpp: check for double PACK 4 resources; if only one is found, assume that the ROM requires an FPU and issue a warning if FPU emulation is turned off - UAE CPU opcode routines no longer return the cycle count - main_unix.cpp: pressing Ctrl-C dumps the UAE CPU state before entering mon - sys_unix.cpp: under Linux, partition sizes are read with BLKGETSIZE instead of llseek()
#	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	cebix	1.5	#if ENABLE_XF86_DGA
52	cebix	1.1	#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	1.6	else if (strcmp(argv[i], "-rominfo") == 0)
147			PrintROMInfo = true;
148	cebix	1.1	}
149
150			// Open display
151			x_display = XOpenDisplay(x_display_name);
152			if (x_display == NULL) {
153			char str[256];
154			sprintf(str, GetString(STR_NO_XSERVER_ERR), XDisplayName(x_display_name));
155			ErrorAlert(str);
156			QuitEmulator();
157			}
158
159	cebix	1.7	#if ENABLE_XF86_DGA && !ENABLE_MON
160	cebix	1.1	// Fork out, so we can return from fullscreen mode when things get ugly
161	cebix	1.2	XF86DGAForkApp(DefaultScreen(x_display));
162	cebix	1.1	#endif
163
164			#if ENABLE_GTK
165			// Init GTK
166			gtk_set_locale();
167			gtk_init(&argc, &argv);
168			#endif
169
170			// Read preferences
171			PrefsInit();
172
173			// Init system routines
174			SysInit();
175
176			// Show preferences editor
177			if (!PrefsFindBool("nogui"))
178			if (!PrefsEditor())
179			QuitEmulator();
180
181			// Create area for Mac RAM
182			RAMSize = PrefsFindInt32("ramsize") & 0xfff00000; // Round down to 1MB boundary
183			if (RAMSize < 1024*1024) {
184			WarningAlert(GetString(STR_SMALL_RAM_WARN));
185			RAMSize = 1024*1024;
186			}
187			RAMBaseHost = new uint8[RAMSize];
188
189			// Create area for Mac ROM
190			ROMBaseHost = new uint8[0x100000];
191
192			// Get rom file path from preferences
193			const char *rom_path = PrefsFindString("rom");
194
195			// Load Mac ROM
196			int rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY);
197			if (rom_fd < 0) {
198			ErrorAlert(GetString(STR_NO_ROM_FILE_ERR));
199			QuitEmulator();
200			}
201			printf(GetString(STR_READING_ROM_FILE));
202			ROMSize = lseek(rom_fd, 0, SEEK_END);
203			if (ROMSize != 641024 && ROMSize != 1281024 && ROMSize != 2561024 && ROMSize != 5121024 && ROMSize != 1024*1024) {
204			ErrorAlert(GetString(STR_ROM_SIZE_ERR));
205			close(rom_fd);
206			QuitEmulator();
207			}
208			lseek(rom_fd, 0, SEEK_SET);
209			if (read(rom_fd, ROMBaseHost, ROMSize) != (ssize_t)ROMSize) {
210			ErrorAlert(GetString(STR_ROM_FILE_READ_ERR));
211			close(rom_fd);
212			QuitEmulator();
213			}
214
215	cebix	1.3	// Initialize everything
216			if (!InitAll())
217	cebix	1.1	QuitEmulator();
218
219			// Start XPRAM watchdog thread
220			xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
221
222			#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
223			// Start 60Hz timer
224			sigemptyset(&timer_sa.sa_mask);
225			timer_sa.sa_flags = SA_SIGINFO \| SA_RESTART;
226			timer_sa.sa_sigaction = one_tick;
227			if (sigaction(SIG_TIMER, &timer_sa, NULL) < 0) {
228			printf("FATAL: cannot set up timer signal handler\n");
229			QuitEmulator();
230			}
231			struct sigevent timer_event;
232			timer_event.sigev_notify = SIGEV_SIGNAL;
233			timer_event.sigev_signo = SIG_TIMER;
234			if (timer_create(CLOCK_REALTIME, &timer_event, &timer) < 0) {
235			printf("FATAL: cannot create timer\n");
236			QuitEmulator();
237			}
238			struct itimerspec req;
239			req.it_value.tv_sec = 0;
240			req.it_value.tv_nsec = 16625000;
241			req.it_interval.tv_sec = 0;
242			req.it_interval.tv_nsec = 16625000;
243			if (timer_settime(timer, TIMER_RELTIME, &req, NULL) < 0) {
244			printf("FATAL: cannot start timer\n");
245			QuitEmulator();
246			}
247
248			#else
249
250			// Start 60Hz thread
251			pthread_attr_init(&tick_thread_attr);
252			#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
253			if (geteuid() == 0) {
254			pthread_attr_setinheritsched(&tick_thread_attr, PTHREAD_EXPLICIT_SCHED);
255			pthread_attr_setschedpolicy(&tick_thread_attr, SCHED_FIFO);
256			struct sched_param fifo_param;
257			fifo_param.sched_priority = (sched_get_priority_min(SCHED_FIFO) + sched_get_priority_max(SCHED_FIFO)) / 2;
258			pthread_attr_setschedparam(&tick_thread_attr, &fifo_param);
259			}
260			#endif
261			tick_thread_active = (pthread_create(&tick_thread, &tick_thread_attr, tick_func, NULL) == 0);
262			if (!tick_thread_active) {
263			printf("FATAL: cannot create tick thread\n");
264			QuitEmulator();
265			}
266			#endif
267
268	cebix	1.4	#if ENABLE_MON
269			// Setup SIGINT handler to enter mon
270			sigemptyset(&sigint_sa.sa_mask);
271			sigint_sa.sa_flags = 0;
272			sigint_sa.sa_handler = sigint_handler;
273			sigaction(SIGINT, &sigint_sa, NULL);
274			#endif
275
276	cebix	1.1	// Start 68k and jump to ROM boot routine
277			Start680x0();
278
279			QuitEmulator();
280			return 0;
281			}
282
283
284			/*
285			* Quit emulator
286			*/
287
288			void QuitEmulator(void)
289			{
290			// Exit 680x0 emulation
291			Exit680x0();
292
293			#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
294			// Stop 60Hz timer
295			timer_delete(timer);
296			#else
297			// Stop 60Hz thread
298			if (tick_thread_active) {
299			tick_thread_cancel = true;
300			#ifdef HAVE_PTHREAD_CANCEL
301			pthread_cancel(tick_thread);
302			#endif
303			pthread_join(tick_thread, NULL);
304			}
305			#endif
306
307			// Stop XPRAM watchdog thread
308			if (xpram_thread_active) {
309			xpram_thread_cancel = true;
310			#ifdef HAVE_PTHREAD_CANCEL
311			pthread_cancel(xpram_thread);
312			#endif
313			pthread_join(xpram_thread, NULL);
314			}
315
316	cebix	1.3	// Deinitialize everything
317			ExitAll();
318	cebix	1.1
319			// Delete ROM area
320			delete[] ROMBaseHost;
321
322			// Delete RAM area
323			delete[] RAMBaseHost;
324
325			// Exit system routines
326			SysExit();
327
328			// Exit preferences
329			PrefsExit();
330
331			// Close X11 server connection
332			if (x_display)
333			XCloseDisplay(x_display);
334
335			exit(0);
336			}
337
338
339			/*
340			* Code was patched, flush caches if neccessary (i.e. when using a real 680x0
341			* or a dynamically recompiling emulator)
342			*/
343
344			#if EMULATED_68K
345			void FlushCodeCache(void *start, uint32 size)
346			{
347	cebix	1.4	}
348			#endif
349
350
351			/*
352			* SIGINT handler, enters mon
353			*/
354
355			#if ENABLE_MON
356	cebix	1.8	extern void m68k_dumpstate(uaecptr *nextpc);
357	cebix	1.4	static void sigint_handler(...)
358			{
359	cebix	1.8	uaecptr nextpc;
360			m68k_dumpstate(&nextpc);
361	cebix	1.4	char *arg[2] = {"rmon", NULL};
362			mon(1, arg);
363			QuitEmulator();
364	cebix	1.1	}
365			#endif
366
367
368			/*
369			* Interrupt flags (must be handled atomically!)
370			*/
371
372			uint32 InterruptFlags = 0;
373
374			void SetInterruptFlag(uint32 flag)
375			{
376			pthread_mutex_lock(&intflag_lock);
377			InterruptFlags \|= flag;
378			pthread_mutex_unlock(&intflag_lock);
379			}
380
381			void ClearInterruptFlag(uint32 flag)
382			{
383			pthread_mutex_lock(&intflag_lock);
384			InterruptFlags &= ~flag;
385			pthread_mutex_unlock(&intflag_lock);
386			}
387
388
389			/*
390			* 60Hz thread (really 60.15Hz)
391			*/
392
393			static void one_tick(...)
394			{
395			static int tick_counter = 0;
396
397			// Pseudo Mac 1Hz interrupt, update local time
398			if (++tick_counter > 60) {
399			tick_counter = 0;
400			WriteMacInt32(0x20c, TimerDateTime());
401			}
402
403			// Trigger 60Hz interrupt
404			if (ROMVersion != ROM_VERSION_CLASSIC \|\| HasMacStarted()) {
405			SetInterruptFlag(INTFLAG_60HZ);
406			TriggerInterrupt();
407			}
408			}
409
410			static void tick_func(void arg)
411			{
412			while (!tick_thread_cancel) {
413
414			// Wait
415			#ifdef HAVE_NANOSLEEP
416			struct timespec req = {0, 16625000};
417			nanosleep(&req, NULL);
418			#else
419			usleep(16625);
420			#endif
421
422			// Action
423			one_tick();
424			}
425			return NULL;
426			}
427
428
429			/*
430			* XPRAM watchdog thread (saves XPRAM every minute)
431			*/
432
433			void xpram_func(void arg)
434			{
435			uint8 last_xpram[256];
436			memcpy(last_xpram, XPRAM, 256);
437
438			while (!xpram_thread_cancel) {
439			for (int i=0; i<60 && !xpram_thread_cancel; i++) {
440			#ifdef HAVE_NANOSLEEP
441			struct timespec req = {1, 0};
442			nanosleep(&req, NULL);
443			#else
444			usleep(1000000);
445			#endif
446			}
447			if (memcmp(last_xpram, XPRAM, 256)) {
448			memcpy(last_xpram, XPRAM, 256);
449			SaveXPRAM();
450			}
451			}
452			return NULL;
453			}
454
455
456			/*
457			* Display alert
458			*/
459
460			#if ENABLE_GTK
461			static void dl_destroyed(void)
462			{
463			gtk_main_quit();
464			}
465
466			static void dl_quit(GtkWidget *dialog)
467			{
468			gtk_widget_destroy(dialog);
469			}
470
471			void display_alert(int title_id, int prefix_id, int button_id, const char *text)
472			{
473			char str[256];
474			sprintf(str, GetString(prefix_id), text);
475
476			GtkWidget *dialog = gtk_dialog_new();
477			gtk_window_set_title(GTK_WINDOW(dialog), GetString(title_id));
478			gtk_container_border_width(GTK_CONTAINER(dialog), 5);
479			gtk_widget_set_uposition(GTK_WIDGET(dialog), 100, 150);
480			gtk_signal_connect(GTK_OBJECT(dialog), "destroy", GTK_SIGNAL_FUNC(dl_destroyed), NULL);
481
482			GtkWidget *label = gtk_label_new(str);
483			gtk_widget_show(label);
484			gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), label, TRUE, TRUE, 0);
485
486			GtkWidget *button = gtk_button_new_with_label(GetString(button_id));
487			gtk_widget_show(button);
488			gtk_signal_connect_object(GTK_OBJECT(button), "clicked", GTK_SIGNAL_FUNC(dl_quit), GTK_OBJECT(dialog));
489			gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area), button, FALSE, FALSE, 0);
490			GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
491			gtk_widget_grab_default(button);
492			gtk_widget_show(dialog);
493
494			gtk_main();
495			}
496			#endif
497
498
499			/*
500			* Display error alert
501			*/
502
503			void ErrorAlert(const char *text)
504			{
505			#if ENABLE_GTK
506			if (PrefsFindBool("nogui") \|\| x_display == NULL) {
507			printf(GetString(STR_SHELL_ERROR_PREFIX), text);
508			return;
509			}
510			VideoQuitFullScreen();
511			display_alert(STR_ERROR_ALERT_TITLE, STR_GUI_ERROR_PREFIX, STR_QUIT_BUTTON, text);
512			#else
513			printf(GetString(STR_SHELL_ERROR_PREFIX), text);
514			#endif
515			}
516
517
518			/*
519			* Display warning alert
520			*/
521
522			void WarningAlert(const char *text)
523			{
524			#if ENABLE_GTK
525			if (PrefsFindBool("nogui") \|\| x_display == NULL) {
526			printf(GetString(STR_SHELL_WARNING_PREFIX), text);
527			return;
528			}
529			display_alert(STR_WARNING_ALERT_TITLE, STR_GUI_WARNING_PREFIX, STR_OK_BUTTON, text);
530			#else
531			printf(GetString(STR_SHELL_WARNING_PREFIX), text);
532			#endif
533			}
534
535
536			/*
537			* Display choice alert
538			*/
539
540			bool ChoiceAlert(const char text, const char pos, const char *neg)
541			{
542			printf(GetString(STR_SHELL_WARNING_PREFIX), text);
543			return false; //!!
544			}