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

#ifdef USE_MAPPED_MEMORY
#include <sys/mman.h>
extern char *address_space, *good_address_map;
#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();

        // Read RAM size
        RAMSize = PrefsFindInt32("ramsize") & 0xfff00000;       // Round down to 1MB boundary
        if (RAMSize < 1024*1024) {
                WarningAlert(GetString(STR_SMALL_RAM_WARN));
                RAMSize = 1024*1024;
        }

        // Create areas for Mac RAM and ROM
#ifdef USE_MAPPED_MEMORY
    int fd = open("/dev/zero", O_RDWR);
    good_address_map = (char *)mmap(NULL, 1<<24, PROT_READ, MAP_PRIVATE, fd, 0);
    address_space = (char *)mmap(NULL, 1<<24, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
    if ((int)address_space < 0 || (int)good_address_map < 0) {
                ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
                QuitEmulator();
    }
    RAMBaseHost = (uint8 *)mmap(address_space, RAMSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, fd, 0);
    ROMBaseHost = (uint8 *)mmap(address_space + 0x00400000, 0x80000, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_FIXED, fd, 0);
    close(fd);
        char *nam = tmpnam(NULL);
    int good_address_fd = open(nam, O_CREAT | O_RDWR, 0600);
        char buffer[4096];
    memset(buffer, 1, sizeof(buffer));
    write(good_address_fd, buffer, sizeof(buffer));
    unlink(nam);
    for (int i=0; i<RAMSize; i+=4096)
        mmap(good_address_map + i, 4096, PROT_READ, MAP_FIXED | MAP_PRIVATE, good_address_fd, 0);
    for (int i=0; i<0x80000; i+=4096)
        mmap(good_address_map + i + 0x00400000, 4096, PROT_READ, MAP_FIXED | MAP_PRIVATE, good_address_fd, 0);
#else
        RAMBaseHost = new uint8[RAMSize];
        ROMBaseHost = new uint8[0x100000];
#endif

        // 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:	1.9
Committed:	1999-11-03T10:56:28Z (25 years ago) by cebix
Branch:	MAIN
CVS Tags:	snapshot-22121999
Changes since 1.8:	+31 -3 lines
Log Message:	- imported UAE CPU 0.8.10 changes - new utility functions Mac_memset, Mac2Host_memcpy, Host2Mac_memcpu and Mac2Mac_memcpy - extfs.cpp: fixed bug in fs_rename() and fs_cat_move() (auxiliary IOParam block was not in Mac address space) - some provisions for using UAE CPU compiler (doesn't work yet)
#	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	1.9	#ifdef USE_MAPPED_MEMORY
62			#include <sys/mman.h>
63			extern char address_space, good_address_map;
64			#endif
65
66	cebix	1.1
67			// Constants
68			const char ROM_FILE_NAME[] = "ROM";
69
70
71			// CPU and FPU type, addressing mode
72			int CPUType;
73			bool CPUIs68060;
74			int FPUType;
75			bool TwentyFourBitAddressing;
76
77
78			// Global variables
79			static char *x_display_name = NULL; // X11 display name
80			Display *x_display = NULL; // X11 display handle
81
82			static bool xpram_thread_active = false; // Flag: XPRAM watchdog installed
83			static volatile bool xpram_thread_cancel = false; // Flag: Cancel XPRAM thread
84			static pthread_t xpram_thread; // XPRAM watchdog
85
86			static bool tick_thread_active = false; // Flag: 60Hz thread installed
87			static volatile bool tick_thread_cancel = false; // Flag: Cancel 60Hz thread
88			static pthread_t tick_thread; // 60Hz thread
89			static pthread_attr_t tick_thread_attr; // 60Hz thread attributes
90
91			static pthread_mutex_t intflag_lock = PTHREAD_MUTEX_INITIALIZER; // Mutex to protect InterruptFlags
92
93			#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
94			#define SIG_TIMER SIGRTMIN
95			static struct sigaction timer_sa; // sigaction used for timer
96			static timer_t timer; // 60Hz timer
97			#endif
98
99	cebix	1.4	#if ENABLE_MON
100			static struct sigaction sigint_sa; // sigaction for SIGINT handler
101			static void sigint_handler(...);
102			#endif
103
104	cebix	1.1
105			// Prototypes
106			static void xpram_func(void arg);
107			static void tick_func(void arg);
108			static void one_tick(...);
109
110
111			/*
112			* Ersatz functions
113			*/
114
115			extern "C" {
116
117			#ifndef HAVE_STRDUP
118			char strdup(const char s)
119			{
120			char n = (char )malloc(strlen(s) + 1);
121			strcpy(n, s);
122			return n;
123			}
124			#endif
125
126			}
127
128
129			/*
130			* Main program
131			*/
132
133			int main(int argc, char **argv)
134			{
135			// Initialize variables
136			RAMBaseHost = NULL;
137			ROMBaseHost = NULL;
138			srand(time(NULL));
139			tzset();
140
141			// Print some info
142			printf(GetString(STR_ABOUT_TEXT1), VERSION_MAJOR, VERSION_MINOR);
143			printf(" %s\n", GetString(STR_ABOUT_TEXT2));
144
145			// Parse arguments
146			for (int i=1; i<argc; i++) {
147			if (strcmp(argv[i], "-display") == 0 && ++i < argc)
148			x_display_name = argv[i];
149	cebix	1.4	else if (strcmp(argv[i], "-break") == 0 && ++i < argc)
150			ROMBreakpoint = strtol(argv[i], NULL, 0);
151	cebix	1.6	else if (strcmp(argv[i], "-rominfo") == 0)
152			PrintROMInfo = true;
153	cebix	1.1	}
154
155			// Open display
156			x_display = XOpenDisplay(x_display_name);
157			if (x_display == NULL) {
158			char str[256];
159			sprintf(str, GetString(STR_NO_XSERVER_ERR), XDisplayName(x_display_name));
160			ErrorAlert(str);
161			QuitEmulator();
162			}
163
164	cebix	1.7	#if ENABLE_XF86_DGA && !ENABLE_MON
165	cebix	1.1	// Fork out, so we can return from fullscreen mode when things get ugly
166	cebix	1.2	XF86DGAForkApp(DefaultScreen(x_display));
167	cebix	1.1	#endif
168
169			#if ENABLE_GTK
170			// Init GTK
171			gtk_set_locale();
172			gtk_init(&argc, &argv);
173			#endif
174
175			// Read preferences
176			PrefsInit();
177
178			// Init system routines
179			SysInit();
180
181			// Show preferences editor
182			if (!PrefsFindBool("nogui"))
183			if (!PrefsEditor())
184			QuitEmulator();
185
186	cebix	1.9	// Read RAM size
187	cebix	1.1	RAMSize = PrefsFindInt32("ramsize") & 0xfff00000; // Round down to 1MB boundary
188			if (RAMSize < 1024*1024) {
189			WarningAlert(GetString(STR_SMALL_RAM_WARN));
190			RAMSize = 1024*1024;
191			}
192	cebix	1.9
193			// Create areas for Mac RAM and ROM
194			#ifdef USE_MAPPED_MEMORY
195			int fd = open("/dev/zero", O_RDWR);
196			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);
198			if ((int)address_space < 0 \|\| (int)good_address_map < 0) {
199			ErrorAlert(GetString(STR_NOT_ENOUGH_MEMORY_ERR));
200			QuitEmulator();
201			}
202			RAMBaseHost = (uint8 *)mmap(address_space, RAMSize, PROT_READ \| PROT_WRITE, MAP_PRIVATE \| MAP_FIXED, fd, 0);
203			ROMBaseHost = (uint8 *)mmap(address_space + 0x00400000, 0x80000, PROT_READ \| PROT_WRITE, MAP_PRIVATE \| MAP_FIXED, fd, 0);
204			close(fd);
205			char *nam = tmpnam(NULL);
206			int good_address_fd = open(nam, O_CREAT \| O_RDWR, 0600);
207			char buffer[4096];
208			memset(buffer, 1, sizeof(buffer));
209			write(good_address_fd, buffer, sizeof(buffer));
210			unlink(nam);
211			for (int i=0; i<RAMSize; i+=4096)
212			mmap(good_address_map + i, 4096, PROT_READ, MAP_FIXED \| MAP_PRIVATE, good_address_fd, 0);
213			for (int i=0; i<0x80000; i+=4096)
214			mmap(good_address_map + i + 0x00400000, 4096, PROT_READ, MAP_FIXED \| MAP_PRIVATE, good_address_fd, 0);
215			#else
216	cebix	1.1	RAMBaseHost = new uint8[RAMSize];
217			ROMBaseHost = new uint8[0x100000];
218	cebix	1.9	#endif
219	cebix	1.1
220			// Get rom file path from preferences
221			const char *rom_path = PrefsFindString("rom");
222
223			// Load Mac ROM
224			int rom_fd = open(rom_path ? rom_path : ROM_FILE_NAME, O_RDONLY);
225			if (rom_fd < 0) {
226			ErrorAlert(GetString(STR_NO_ROM_FILE_ERR));
227			QuitEmulator();
228			}
229			printf(GetString(STR_READING_ROM_FILE));
230			ROMSize = lseek(rom_fd, 0, SEEK_END);
231			if (ROMSize != 641024 && ROMSize != 1281024 && ROMSize != 2561024 && ROMSize != 5121024 && ROMSize != 1024*1024) {
232			ErrorAlert(GetString(STR_ROM_SIZE_ERR));
233			close(rom_fd);
234			QuitEmulator();
235			}
236			lseek(rom_fd, 0, SEEK_SET);
237			if (read(rom_fd, ROMBaseHost, ROMSize) != (ssize_t)ROMSize) {
238			ErrorAlert(GetString(STR_ROM_FILE_READ_ERR));
239			close(rom_fd);
240			QuitEmulator();
241			}
242
243	cebix	1.3	// Initialize everything
244			if (!InitAll())
245	cebix	1.1	QuitEmulator();
246
247			// Start XPRAM watchdog thread
248			xpram_thread_active = (pthread_create(&xpram_thread, NULL, xpram_func, NULL) == 0);
249
250			#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
251			// Start 60Hz timer
252			sigemptyset(&timer_sa.sa_mask);
253			timer_sa.sa_flags = SA_SIGINFO \| SA_RESTART;
254			timer_sa.sa_sigaction = one_tick;
255			if (sigaction(SIG_TIMER, &timer_sa, NULL) < 0) {
256			printf("FATAL: cannot set up timer signal handler\n");
257			QuitEmulator();
258			}
259			struct sigevent timer_event;
260			timer_event.sigev_notify = SIGEV_SIGNAL;
261			timer_event.sigev_signo = SIG_TIMER;
262			if (timer_create(CLOCK_REALTIME, &timer_event, &timer) < 0) {
263			printf("FATAL: cannot create timer\n");
264			QuitEmulator();
265			}
266			struct itimerspec req;
267			req.it_value.tv_sec = 0;
268			req.it_value.tv_nsec = 16625000;
269			req.it_interval.tv_sec = 0;
270			req.it_interval.tv_nsec = 16625000;
271			if (timer_settime(timer, TIMER_RELTIME, &req, NULL) < 0) {
272			printf("FATAL: cannot start timer\n");
273			QuitEmulator();
274			}
275
276			#else
277
278			// Start 60Hz thread
279			pthread_attr_init(&tick_thread_attr);
280			#if defined(_POSIX_THREAD_PRIORITY_SCHEDULING)
281			if (geteuid() == 0) {
282			pthread_attr_setinheritsched(&tick_thread_attr, PTHREAD_EXPLICIT_SCHED);
283			pthread_attr_setschedpolicy(&tick_thread_attr, SCHED_FIFO);
284			struct sched_param fifo_param;
285			fifo_param.sched_priority = (sched_get_priority_min(SCHED_FIFO) + sched_get_priority_max(SCHED_FIFO)) / 2;
286			pthread_attr_setschedparam(&tick_thread_attr, &fifo_param);
287			}
288			#endif
289			tick_thread_active = (pthread_create(&tick_thread, &tick_thread_attr, tick_func, NULL) == 0);
290			if (!tick_thread_active) {
291			printf("FATAL: cannot create tick thread\n");
292			QuitEmulator();
293			}
294			#endif
295
296	cebix	1.4	#if ENABLE_MON
297			// Setup SIGINT handler to enter mon
298			sigemptyset(&sigint_sa.sa_mask);
299			sigint_sa.sa_flags = 0;
300			sigint_sa.sa_handler = sigint_handler;
301			sigaction(SIGINT, &sigint_sa, NULL);
302			#endif
303
304	cebix	1.1	// Start 68k and jump to ROM boot routine
305			Start680x0();
306
307			QuitEmulator();
308			return 0;
309			}
310
311
312			/*
313			* Quit emulator
314			*/
315
316			void QuitEmulator(void)
317			{
318			// Exit 680x0 emulation
319			Exit680x0();
320
321			#if defined(HAVE_TIMER_CREATE) && defined(_POSIX_REALTIME_SIGNALS)
322			// Stop 60Hz timer
323			timer_delete(timer);
324			#else
325			// Stop 60Hz thread
326			if (tick_thread_active) {
327			tick_thread_cancel = true;
328			#ifdef HAVE_PTHREAD_CANCEL
329			pthread_cancel(tick_thread);
330			#endif
331			pthread_join(tick_thread, NULL);
332			}
333			#endif
334
335			// Stop XPRAM watchdog thread
336			if (xpram_thread_active) {
337			xpram_thread_cancel = true;
338			#ifdef HAVE_PTHREAD_CANCEL
339			pthread_cancel(xpram_thread);
340			#endif
341			pthread_join(xpram_thread, NULL);
342			}
343
344	cebix	1.3	// Deinitialize everything
345			ExitAll();
346	cebix	1.1
347			// Delete ROM area
348			delete[] ROMBaseHost;
349
350			// Delete RAM area
351			delete[] RAMBaseHost;
352
353			// Exit system routines
354			SysExit();
355
356			// Exit preferences
357			PrefsExit();
358
359			// Close X11 server connection
360			if (x_display)
361			XCloseDisplay(x_display);
362
363			exit(0);
364			}
365
366
367			/*
368			* Code was patched, flush caches if neccessary (i.e. when using a real 680x0
369			* or a dynamically recompiling emulator)
370			*/
371
372			#if EMULATED_68K
373			void FlushCodeCache(void *start, uint32 size)
374			{
375	cebix	1.4	}
376			#endif
377
378
379			/*
380			* SIGINT handler, enters mon
381			*/
382
383			#if ENABLE_MON
384	cebix	1.8	extern void m68k_dumpstate(uaecptr *nextpc);
385	cebix	1.4	static void sigint_handler(...)
386			{
387	cebix	1.8	uaecptr nextpc;
388			m68k_dumpstate(&nextpc);
389	cebix	1.4	char *arg[2] = {"rmon", NULL};
390			mon(1, arg);
391			QuitEmulator();
392	cebix	1.1	}
393			#endif
394
395
396			/*
397			* Interrupt flags (must be handled atomically!)
398			*/
399
400			uint32 InterruptFlags = 0;
401
402			void SetInterruptFlag(uint32 flag)
403			{
404			pthread_mutex_lock(&intflag_lock);
405			InterruptFlags \|= flag;
406			pthread_mutex_unlock(&intflag_lock);
407			}
408
409			void ClearInterruptFlag(uint32 flag)
410			{
411			pthread_mutex_lock(&intflag_lock);
412			InterruptFlags &= ~flag;
413			pthread_mutex_unlock(&intflag_lock);
414			}
415
416
417			/*
418			* 60Hz thread (really 60.15Hz)
419			*/
420
421			static void one_tick(...)
422			{
423			static int tick_counter = 0;
424
425			// Pseudo Mac 1Hz interrupt, update local time
426			if (++tick_counter > 60) {
427			tick_counter = 0;
428			WriteMacInt32(0x20c, TimerDateTime());
429			}
430
431			// Trigger 60Hz interrupt
432			if (ROMVersion != ROM_VERSION_CLASSIC \|\| HasMacStarted()) {
433			SetInterruptFlag(INTFLAG_60HZ);
434			TriggerInterrupt();
435			}
436			}
437
438			static void tick_func(void arg)
439			{
440			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
451			one_tick();
452			}
453			return NULL;
454			}
455
456
457			/*
458			* XPRAM watchdog thread (saves XPRAM every minute)
459			*/
460
461			void xpram_func(void arg)
462			{
463			uint8 last_xpram[256];
464			memcpy(last_xpram, XPRAM, 256);
465
466			while (!xpram_thread_cancel) {
467			for (int i=0; i<60 && !xpram_thread_cancel; i++) {
468			#ifdef HAVE_NANOSLEEP
469			struct timespec req = {1, 0};
470			nanosleep(&req, NULL);
471			#else
472			usleep(1000000);
473			#endif
474			}
475			if (memcmp(last_xpram, XPRAM, 256)) {
476			memcpy(last_xpram, XPRAM, 256);
477			SaveXPRAM();
478			}
479			}
480			return NULL;
481			}
482
483
484			/*
485			* Display alert
486			*/
487
488			#if ENABLE_GTK
489			static void dl_destroyed(void)
490			{
491			gtk_main_quit();
492			}
493
494			static void dl_quit(GtkWidget *dialog)
495			{
496			gtk_widget_destroy(dialog);
497			}
498
499			void display_alert(int title_id, int prefix_id, int button_id, const char *text)
500			{
501			char str[256];
502			sprintf(str, GetString(prefix_id), text);
503
504			GtkWidget *dialog = gtk_dialog_new();
505			gtk_window_set_title(GTK_WINDOW(dialog), GetString(title_id));
506			gtk_container_border_width(GTK_CONTAINER(dialog), 5);
507			gtk_widget_set_uposition(GTK_WIDGET(dialog), 100, 150);
508			gtk_signal_connect(GTK_OBJECT(dialog), "destroy", GTK_SIGNAL_FUNC(dl_destroyed), NULL);
509
510			GtkWidget *label = gtk_label_new(str);
511			gtk_widget_show(label);
512			gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), label, TRUE, TRUE, 0);
513
514			GtkWidget *button = gtk_button_new_with_label(GetString(button_id));
515			gtk_widget_show(button);
516			gtk_signal_connect_object(GTK_OBJECT(button), "clicked", GTK_SIGNAL_FUNC(dl_quit), GTK_OBJECT(dialog));
517			gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->action_area), button, FALSE, FALSE, 0);
518			GTK_WIDGET_SET_FLAGS(button, GTK_CAN_DEFAULT);
519			gtk_widget_grab_default(button);
520			gtk_widget_show(dialog);
521
522			gtk_main();
523			}
524			#endif
525
526
527			/*
528			* Display error alert
529			*/
530
531			void ErrorAlert(const char *text)
532			{
533			#if ENABLE_GTK
534			if (PrefsFindBool("nogui") \|\| x_display == NULL) {
535			printf(GetString(STR_SHELL_ERROR_PREFIX), text);
536			return;
537			}
538			VideoQuitFullScreen();
539			display_alert(STR_ERROR_ALERT_TITLE, STR_GUI_ERROR_PREFIX, STR_QUIT_BUTTON, text);
540			#else
541			printf(GetString(STR_SHELL_ERROR_PREFIX), text);
542			#endif
543			}
544
545
546			/*
547			* Display warning alert
548			*/
549
550			void WarningAlert(const char *text)
551			{
552			#if ENABLE_GTK
553			if (PrefsFindBool("nogui") \|\| x_display == NULL) {
554			printf(GetString(STR_SHELL_WARNING_PREFIX), text);
555			return;
556			}
557			display_alert(STR_WARNING_ALERT_TITLE, STR_GUI_WARNING_PREFIX, STR_OK_BUTTON, text);
558			#else
559			printf(GetString(STR_SHELL_WARNING_PREFIX), text);
560			#endif
561			}
562
563
564			/*
565			* Display choice alert
566			*/
567
568			bool ChoiceAlert(const char text, const char pos, const char *neg)
569			{
570			printf(GetString(STR_SHELL_WARNING_PREFIX), text);
571			return false; //!!
572			}