]> git.proxmox.com Git - qemu.git/blobdiff - vl.c
CRTC register write protection fix - line_compare, multi_scan and double_scan fixes
[qemu.git] / vl.c
diff --git a/vl.c b/vl.c
index 8472f0a230adaa8f80bd85de647fddcc68ebc385..6710e30a4ec58be23ce49ab9163045b776330050 100644 (file)
--- a/vl.c
+++ b/vl.c
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <string.h>
-#include <ctype.h>
-#include <getopt.h>
-#include <inttypes.h>
+#include "vl.h"
+
 #include <unistd.h>
-#include <sys/mman.h>
 #include <fcntl.h>
 #include <signal.h>
 #include <time.h>
+#include <errno.h>
 #include <sys/time.h>
-#include <malloc.h>
+
+#ifndef _WIN32
+#include <sys/times.h>
+#include <sys/wait.h>
 #include <termios.h>
 #include <sys/poll.h>
-#include <errno.h>
-#include <sys/wait.h>
-#include <pty.h>
-
+#include <sys/mman.h>
 #include <sys/ioctl.h>
 #include <sys/socket.h>
+#include <netinet/in.h>
+#include <dirent.h>
+#ifdef _BSD
+#include <sys/stat.h>
+#ifndef __APPLE__
+#include <libutil.h>
+#endif
+#else
 #include <linux/if.h>
 #include <linux/if_tun.h>
+#include <pty.h>
+#include <malloc.h>
+#include <linux/rtc.h>
+#endif
+#endif
+
+#if defined(CONFIG_SLIRP)
+#include "libslirp.h"
+#endif
+
+#ifdef _WIN32
+#include <malloc.h>
+#include <sys/timeb.h>
+#include <windows.h>
+#define getopt_long_only getopt_long
+#define memalign(align, size) malloc(size)
+#endif
+
+#ifdef CONFIG_SDL
+#ifdef __APPLE__
+#include <SDL/SDL.h>
+#endif
+#endif /* CONFIG_SDL */
 
 #include "disas.h"
-#include "thunk.h"
 
-#include "vl.h"
+#include "exec-all.h"
+
+//#define DO_TB_FLUSH
 
 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
 
 //#define DEBUG_UNUSED_IOPORT
+//#define DEBUG_IOPORT
 
 #if !defined(CONFIG_SOFTMMU)
 #define PHYS_RAM_MAX_SIZE (256 * 1024 * 1024)
 #define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024)
 #endif
 
-#if defined (TARGET_I386)
-#elif defined (TARGET_PPC)
-//#define USE_OPEN_FIRMWARE
-#if !defined (USE_OPEN_FIRMWARE)
-#define KERNEL_LOAD_ADDR    0x01000000
-#define KERNEL_STACK_ADDR   0x01200000
+#ifdef TARGET_PPC
+#define DEFAULT_RAM_SIZE 144
 #else
-#define KERNEL_LOAD_ADDR    0x00000000
-#define KERNEL_STACK_ADDR   0x00400000
-#endif
+#define DEFAULT_RAM_SIZE 128
 #endif
-
-#define GUI_REFRESH_INTERVAL 30 
+/* in ms */
+#define GUI_REFRESH_INTERVAL 30
 
 /* XXX: use a two level table to limit memory usage */
 #define MAX_IOPORTS 65536
@@ -87,20 +109,34 @@ IOPortReadFunc *ioport_read_table[3][MAX_IOPORTS];
 IOPortWriteFunc *ioport_write_table[3][MAX_IOPORTS];
 BlockDriverState *bs_table[MAX_DISKS], *fd_table[MAX_FD];
 int vga_ram_size;
+int bios_size;
 static DisplayState display_state;
 int nographic;
-int term_inited;
 int64_t ticks_per_sec;
 int boot_device = 'c';
-static int ram_size;
+int ram_size;
 static char network_script[1024];
 int pit_min_timer_count = 0;
 int nb_nics;
 NetDriverState nd_table[MAX_NICS];
-SerialState *serial_console;
+QEMUTimer *gui_timer;
+int vm_running;
+int audio_enabled = 0;
+int pci_enabled = 1;
+int prep_enabled = 0;
+int rtc_utc = 1;
+int cirrus_vga_enabled = 1;
+int graphic_width = 800;
+int graphic_height = 600;
+int graphic_depth = 15;
+int full_screen = 0;
+TextConsole *vga_console;
+CharDriverState *serial_hds[MAX_SERIAL_PORTS];
 
 /***********************************************************/
-/* x86 io ports */
+/* x86 ISA bus support */
+
+target_phys_addr_t isa_mem_base = 0;
 
 uint32_t default_ioport_readb(void *opaque, uint32_t address)
 {
@@ -121,15 +157,17 @@ void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data)
 uint32_t default_ioport_readw(void *opaque, uint32_t address)
 {
     uint32_t data;
-    data = ioport_read_table[0][address & (MAX_IOPORTS - 1)](opaque, address);
-    data |= ioport_read_table[0][(address + 1) & (MAX_IOPORTS - 1)](opaque, address + 1) << 8;
+    data = ioport_read_table[0][address](ioport_opaque[address], address);
+    address = (address + 1) & (MAX_IOPORTS - 1);
+    data |= ioport_read_table[0][address](ioport_opaque[address], address) << 8;
     return data;
 }
 
 void default_ioport_writew(void *opaque, uint32_t address, uint32_t data)
 {
-    ioport_write_table[0][address & (MAX_IOPORTS - 1)](opaque, address, data & 0xff);
-    ioport_write_table[0][(address + 1) & (MAX_IOPORTS - 1)](opaque, address + 1, (data >> 8) & 0xff);
+    ioport_write_table[0][address](ioport_opaque[address], address, data & 0xff);
+    address = (address + 1) & (MAX_IOPORTS - 1);
+    ioport_write_table[0][address](ioport_opaque[address], address, (data >> 8) & 0xff);
 }
 
 uint32_t default_ioport_readl(void *opaque, uint32_t address)
@@ -211,6 +249,21 @@ int register_ioport_write(int start, int length, int size,
     return 0;
 }
 
+void isa_unassign_ioport(int start, int length)
+{
+    int i;
+
+    for(i = start; i < start + length; i++) {
+        ioport_read_table[0][i] = default_ioport_readb;
+        ioport_read_table[1][i] = default_ioport_readw;
+        ioport_read_table[2][i] = default_ioport_readl;
+
+        ioport_write_table[0][i] = default_ioport_writeb;
+        ioport_write_table[1][i] = default_ioport_writew;
+        ioport_write_table[2][i] = default_ioport_writel;
+    }
+}
+
 void pstrcpy(char *buf, int buf_size, const char *str)
 {
     int c;
@@ -238,11 +291,39 @@ char *pstrcat(char *buf, int buf_size, const char *s)
     return buf;
 }
 
+int strstart(const char *str, const char *val, const char **ptr)
+{
+    const char *p, *q;
+    p = str;
+    q = val;
+    while (*q != '\0') {
+        if (*p != *q)
+            return 0;
+        p++;
+        q++;
+    }
+    if (ptr)
+        *ptr = p;
+    return 1;
+}
+
+/* return the size or -1 if error */
+int get_image_size(const char *filename)
+{
+    int fd, size;
+    fd = open(filename, O_RDONLY | O_BINARY);
+    if (fd < 0)
+        return -1;
+    size = lseek(fd, 0, SEEK_END);
+    close(fd);
+    return size;
+}
+
 /* return the size or -1 if error */
 int load_image(const char *filename, uint8_t *addr)
 {
     int fd, size;
-    fd = open(filename, O_RDONLY);
+    fd = open(filename, O_RDONLY | O_BINARY);
     if (fd < 0)
         return -1;
     size = lseek(fd, 0, SEEK_END);
@@ -257,38 +338,62 @@ int load_image(const char *filename, uint8_t *addr)
 
 void cpu_outb(CPUState *env, int addr, int val)
 {
-    addr &= (MAX_IOPORTS - 1);
+#ifdef DEBUG_IOPORT
+    if (loglevel & CPU_LOG_IOPORT)
+        fprintf(logfile, "outb: %04x %02x\n", addr, val);
+#endif    
     ioport_write_table[0][addr](ioport_opaque[addr], addr, val);
 }
 
 void cpu_outw(CPUState *env, int addr, int val)
 {
-    addr &= (MAX_IOPORTS - 1);
+#ifdef DEBUG_IOPORT
+    if (loglevel & CPU_LOG_IOPORT)
+        fprintf(logfile, "outw: %04x %04x\n", addr, val);
+#endif    
     ioport_write_table[1][addr](ioport_opaque[addr], addr, val);
 }
 
 void cpu_outl(CPUState *env, int addr, int val)
 {
-    addr &= (MAX_IOPORTS - 1);
+#ifdef DEBUG_IOPORT
+    if (loglevel & CPU_LOG_IOPORT)
+        fprintf(logfile, "outl: %04x %08x\n", addr, val);
+#endif
     ioport_write_table[2][addr](ioport_opaque[addr], addr, val);
 }
 
 int cpu_inb(CPUState *env, int addr)
 {
-    addr &= (MAX_IOPORTS - 1);
-    return ioport_read_table[0][addr](ioport_opaque[addr], addr);
+    int val;
+    val = ioport_read_table[0][addr](ioport_opaque[addr], addr);
+#ifdef DEBUG_IOPORT
+    if (loglevel & CPU_LOG_IOPORT)
+        fprintf(logfile, "inb : %04x %02x\n", addr, val);
+#endif
+    return val;
 }
 
 int cpu_inw(CPUState *env, int addr)
 {
-    addr &= (MAX_IOPORTS - 1);
-    return ioport_read_table[1][addr](ioport_opaque[addr], addr);
+    int val;
+    val = ioport_read_table[1][addr](ioport_opaque[addr], addr);
+#ifdef DEBUG_IOPORT
+    if (loglevel & CPU_LOG_IOPORT)
+        fprintf(logfile, "inw : %04x %04x\n", addr, val);
+#endif
+    return val;
 }
 
 int cpu_inl(CPUState *env, int addr)
 {
-    addr &= (MAX_IOPORTS - 1);
-    return ioport_read_table[2][addr](ioport_opaque[addr], addr);
+    int val;
+    val = ioport_read_table[2][addr](ioport_opaque[addr], addr);
+#ifdef DEBUG_IOPORT
+    if (loglevel & CPU_LOG_IOPORT)
+        fprintf(logfile, "inl : %04x %08x\n", addr, val);
+#endif
+    return val;
 }
 
 /***********************************************************/
@@ -301,14 +406,52 @@ void hw_error(const char *fmt, ...)
     vfprintf(stderr, fmt, ap);
     fprintf(stderr, "\n");
 #ifdef TARGET_I386
-    cpu_x86_dump_state(global_env, stderr, X86_DUMP_FPU | X86_DUMP_CCOP);
+    cpu_dump_state(global_env, stderr, fprintf, X86_DUMP_FPU | X86_DUMP_CCOP);
 #else
-    cpu_dump_state(global_env, stderr, 0);
+    cpu_dump_state(global_env, stderr, fprintf, 0);
 #endif
     va_end(ap);
     abort();
 }
 
+/***********************************************************/
+/* keyboard/mouse */
+
+static QEMUPutKBDEvent *qemu_put_kbd_event;
+static void *qemu_put_kbd_event_opaque;
+static QEMUPutMouseEvent *qemu_put_mouse_event;
+static void *qemu_put_mouse_event_opaque;
+
+void qemu_add_kbd_event_handler(QEMUPutKBDEvent *func, void *opaque)
+{
+    qemu_put_kbd_event_opaque = opaque;
+    qemu_put_kbd_event = func;
+}
+
+void qemu_add_mouse_event_handler(QEMUPutMouseEvent *func, void *opaque)
+{
+    qemu_put_mouse_event_opaque = opaque;
+    qemu_put_mouse_event = func;
+}
+
+void kbd_put_keycode(int keycode)
+{
+    if (qemu_put_kbd_event) {
+        qemu_put_kbd_event(qemu_put_kbd_event_opaque, keycode);
+    }
+}
+
+void kbd_mouse_event(int dx, int dy, int dz, int buttons_state)
+{
+    if (qemu_put_mouse_event) {
+        qemu_put_mouse_event(qemu_put_mouse_event_opaque, 
+                             dx, dy, dz, buttons_state);
+    }
+}
+
+/***********************************************************/
+/* timers */
+
 #if defined(__powerpc__)
 
 static inline uint32_t get_tbl(void) 
@@ -342,7 +485,20 @@ int64_t cpu_get_real_ticks(void)
 int64_t cpu_get_real_ticks(void)
 {
     int64_t val;
-    asm("rdtsc" : "=A" (val));
+    asm volatile ("rdtsc" : "=A" (val));
+    return val;
+}
+
+#elif defined(__x86_64__)
+
+int64_t cpu_get_real_ticks(void)
+{
+    uint32_t low,high;
+    int64_t val;
+    asm volatile("rdtsc" : "=a" (low), "=d" (high));
+    val = high;
+    val <<= 32;
+    val |= low;
     return val;
 }
 
@@ -351,31 +507,47 @@ int64_t cpu_get_real_ticks(void)
 #endif
 
 static int64_t cpu_ticks_offset;
-static int64_t cpu_ticks_last;
+static int cpu_ticks_enabled;
 
-int64_t cpu_get_ticks(void)
+static inline int64_t cpu_get_ticks(void)
 {
-    return cpu_get_real_ticks() + cpu_ticks_offset;
+    if (!cpu_ticks_enabled) {
+        return cpu_ticks_offset;
+    } else {
+        return cpu_get_real_ticks() + cpu_ticks_offset;
+    }
 }
 
 /* enable cpu_get_ticks() */
 void cpu_enable_ticks(void)
 {
-    cpu_ticks_offset = cpu_ticks_last - cpu_get_real_ticks();
+    if (!cpu_ticks_enabled) {
+        cpu_ticks_offset -= cpu_get_real_ticks();
+        cpu_ticks_enabled = 1;
+    }
 }
 
 /* disable cpu_get_ticks() : the clock is stopped. You must not call
    cpu_get_ticks() after that.  */
 void cpu_disable_ticks(void)
 {
-    cpu_ticks_last = cpu_get_ticks();
+    if (cpu_ticks_enabled) {
+        cpu_ticks_offset = cpu_get_ticks();
+        cpu_ticks_enabled = 0;
+    }
 }
 
-int64_t get_clock(void)
+static int64_t get_clock(void)
 {
+#ifdef _WIN32
+    struct _timeb tb;
+    _ftime(&tb);
+    return ((int64_t)tb.time * 1000 + (int64_t)tb.millitm) * 1000;
+#else
     struct timeval tv;
     gettimeofday(&tv, NULL);
     return tv.tv_sec * 1000000LL + tv.tv_usec;
+#endif
 }
 
 void cpu_calibrate_ticks(void)
@@ -383,10 +555,14 @@ void cpu_calibrate_ticks(void)
     int64_t usec, ticks;
 
     usec = get_clock();
-    ticks = cpu_get_ticks();
+    ticks = cpu_get_real_ticks();
+#ifdef _WIN32
+    Sleep(50);
+#else
     usleep(50 * 1000);
+#endif
     usec = get_clock() - usec;
-    ticks = cpu_get_ticks() - ticks;
+    ticks = cpu_get_real_ticks() - ticks;
     ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec;
 }
 
@@ -414,358 +590,1893 @@ uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
     return res.ll;
 }
 
-/***********************************************************/
-/* serial device */
+#define QEMU_TIMER_REALTIME 0
+#define QEMU_TIMER_VIRTUAL  1
 
-int serial_open_device(void)
-{
-    char slave_name[1024];
-    int master_fd, slave_fd;
+struct QEMUClock {
+    int type;
+    /* XXX: add frequency */
+};
 
-    if (serial_console == NULL && nographic) {
-        /* use console for serial port */
-        return 0;
-    } else {
-        if (openpty(&master_fd, &slave_fd, slave_name, NULL, NULL) < 0) {
-            fprintf(stderr, "warning: could not create pseudo terminal for serial port\n");
-            return -1;
-        }
-        fprintf(stderr, "Serial port redirected to %s\n", slave_name);
-        return master_fd;
-    }
-}
+struct QEMUTimer {
+    QEMUClock *clock;
+    int64_t expire_time;
+    QEMUTimerCB *cb;
+    void *opaque;
+    struct QEMUTimer *next;
+};
 
-/***********************************************************/
-/* Linux network device redirector */
+QEMUClock *rt_clock;
+QEMUClock *vm_clock;
 
-static int tun_open(char *ifname, int ifname_size)
+static QEMUTimer *active_timers[2];
+#ifdef _WIN32
+static MMRESULT timerID;
+#else
+/* frequency of the times() clock tick */
+static int timer_freq;
+#endif
+
+QEMUClock *qemu_new_clock(int type)
 {
-    struct ifreq ifr;
-    int fd, ret;
-    
-    fd = open("/dev/net/tun", O_RDWR);
-    if (fd < 0) {
-        fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
-        return -1;
-    }
-    memset(&ifr, 0, sizeof(ifr));
-    ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
-    pstrcpy(ifr.ifr_name, IFNAMSIZ, "tun%d");
-    ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
-    if (ret != 0) {
-        fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
-        close(fd);
-        return -1;
-    }
-    printf("Connected to host network interface: %s\n", ifr.ifr_name);
-    pstrcpy(ifname, ifname_size, ifr.ifr_name);
-    fcntl(fd, F_SETFL, O_NONBLOCK);
-    return fd;
+    QEMUClock *clock;
+    clock = qemu_mallocz(sizeof(QEMUClock));
+    if (!clock)
+        return NULL;
+    clock->type = type;
+    return clock;
 }
 
-static int net_init(void)
+QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque)
 {
-    int pid, status, launch_script, i;
-    NetDriverState *nd;
-    char *args[MAX_NICS + 2];
-    char **parg;
-
-    launch_script = 0;
-    for(i = 0; i < nb_nics; i++) {
-        nd = &nd_table[i];
-        if (nd->fd < 0) {
-            nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
-            if (nd->fd >= 0) 
-                launch_script = 1;
-        }
-    }
+    QEMUTimer *ts;
 
-    if (launch_script) {
-        /* try to launch network init script */
-        pid = fork();
-        if (pid >= 0) {
-            if (pid == 0) {
-                parg = args;
-                *parg++ = network_script;
-                for(i = 0; i < nb_nics; i++) {
-                    nd = &nd_table[i];
-                    if (nd->fd >= 0) {
-                        *parg++ = nd->ifname;
-                    }
-                }
-                *parg++ = NULL;
-                execv(network_script, args);
-                exit(1);
-            }
-            while (waitpid(pid, &status, 0) != pid);
-            if (!WIFEXITED(status) ||
-                WEXITSTATUS(status) != 0) {
-                fprintf(stderr, "%s: could not launch network script\n",
-                        network_script);
-            }
-        }
-    }
-    return 0;
+    ts = qemu_mallocz(sizeof(QEMUTimer));
+    ts->clock = clock;
+    ts->cb = cb;
+    ts->opaque = opaque;
+    return ts;
 }
 
-void net_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
+void qemu_free_timer(QEMUTimer *ts)
 {
-#ifdef DEBUG_NE2000
-    printf("NE2000: sending packet size=%d\n", size);
-#endif
-    write(nd->fd, buf, size);
+    qemu_free(ts);
 }
 
-/***********************************************************/
-/* dumb display */
-
-/* init terminal so that we can grab keys */
-static struct termios oldtty;
-
-static void term_exit(void)
+/* stop a timer, but do not dealloc it */
+void qemu_del_timer(QEMUTimer *ts)
 {
-    tcsetattr (0, TCSANOW, &oldtty);
+    QEMUTimer **pt, *t;
+
+    /* NOTE: this code must be signal safe because
+       qemu_timer_expired() can be called from a signal. */
+    pt = &active_timers[ts->clock->type];
+    for(;;) {
+        t = *pt;
+        if (!t)
+            break;
+        if (t == ts) {
+            *pt = t->next;
+            break;
+        }
+        pt = &t->next;
+    }
 }
 
-static void term_init(void)
+/* modify the current timer so that it will be fired when current_time
+   >= expire_time. The corresponding callback will be called. */
+void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time)
 {
-    struct termios tty;
-
-    tcgetattr (0, &tty);
-    oldtty = tty;
-
-    tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
-                          |INLCR|IGNCR|ICRNL|IXON);
-    tty.c_oflag |= OPOST;
-    tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
-    /* if graphical mode, we allow Ctrl-C handling */
-    if (nographic)
-        tty.c_lflag &= ~ISIG;
-    tty.c_cflag &= ~(CSIZE|PARENB);
-    tty.c_cflag |= CS8;
-    tty.c_cc[VMIN] = 1;
-    tty.c_cc[VTIME] = 0;
-    
-    tcsetattr (0, TCSANOW, &tty);
+    QEMUTimer **pt, *t;
 
-    atexit(term_exit);
+    qemu_del_timer(ts);
 
-    fcntl(0, F_SETFL, O_NONBLOCK);
+    /* add the timer in the sorted list */
+    /* NOTE: this code must be signal safe because
+       qemu_timer_expired() can be called from a signal. */
+    pt = &active_timers[ts->clock->type];
+    for(;;) {
+        t = *pt;
+        if (!t)
+            break;
+        if (t->expire_time > expire_time) 
+            break;
+        pt = &t->next;
+    }
+    ts->expire_time = expire_time;
+    ts->next = *pt;
+    *pt = ts;
 }
 
-static void dumb_update(DisplayState *ds, int x, int y, int w, int h)
+int qemu_timer_pending(QEMUTimer *ts)
 {
+    QEMUTimer *t;
+    for(t = active_timers[ts->clock->type]; t != NULL; t = t->next) {
+        if (t == ts)
+            return 1;
+    }
+    return 0;
 }
 
-static void dumb_resize(DisplayState *ds, int w, int h)
+static inline int qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time)
 {
+    if (!timer_head)
+        return 0;
+    return (timer_head->expire_time <= current_time);
 }
 
-static void dumb_refresh(DisplayState *ds)
+static void qemu_run_timers(QEMUTimer **ptimer_head, int64_t current_time)
 {
-    vga_update_display();
+    QEMUTimer *ts;
+    
+    for(;;) {
+        ts = *ptimer_head;
+        if (!ts || ts->expire_time > current_time)
+            break;
+        /* remove timer from the list before calling the callback */
+        *ptimer_head = ts->next;
+        ts->next = NULL;
+        
+        /* run the callback (the timer list can be modified) */
+        ts->cb(ts->opaque);
+    }
 }
 
-void dumb_display_init(DisplayState *ds)
+int64_t qemu_get_clock(QEMUClock *clock)
 {
-    ds->data = NULL;
-    ds->linesize = 0;
-    ds->depth = 0;
-    ds->dpy_update = dumb_update;
-    ds->dpy_resize = dumb_resize;
-    ds->dpy_refresh = dumb_refresh;
+    switch(clock->type) {
+    case QEMU_TIMER_REALTIME:
+#ifdef _WIN32
+        return GetTickCount();
+#else
+        {
+            struct tms tp;
+
+            /* Note that using gettimeofday() is not a good solution
+               for timers because its value change when the date is
+               modified. */
+            if (timer_freq == 100) {
+                return times(&tp) * 10;
+            } else {
+                return ((int64_t)times(&tp) * 1000) / timer_freq;
+            }
+        }
+#endif
+    default:
+    case QEMU_TIMER_VIRTUAL:
+        return cpu_get_ticks();
+    }
 }
 
-#if !defined(CONFIG_SOFTMMU)
-/***********************************************************/
-/* cpu signal handler */
-static void host_segv_handler(int host_signum, siginfo_t *info, 
-                              void *puc)
+/* save a timer */
+void qemu_put_timer(QEMUFile *f, QEMUTimer *ts)
 {
-    if (cpu_signal_handler(host_signum, info, puc))
-        return;
-    term_exit();
-    abort();
+    uint64_t expire_time;
+
+    if (qemu_timer_pending(ts)) {
+        expire_time = ts->expire_time;
+    } else {
+        expire_time = -1;
+    }
+    qemu_put_be64(f, expire_time);
 }
-#endif
 
-static int timer_irq_pending;
-static int timer_irq_count;
+void qemu_get_timer(QEMUFile *f, QEMUTimer *ts)
+{
+    uint64_t expire_time;
 
-static int timer_ms;
-static int gui_refresh_pending, gui_refresh_count;
+    expire_time = qemu_get_be64(f);
+    if (expire_time != -1) {
+        qemu_mod_timer(ts, expire_time);
+    } else {
+        qemu_del_timer(ts);
+    }
+}
 
-static void host_alarm_handler(int host_signum, siginfo_t *info, 
-                               void *puc)
+static void timer_save(QEMUFile *f, void *opaque)
 {
-    /* NOTE: since usually the OS asks a 100 Hz clock, there can be
-       some drift between cpu_get_ticks() and the interrupt time. So
-       we queue some interrupts to avoid missing some */
-    timer_irq_count += pit_get_out_edges(&pit_channels[0]);
-    if (timer_irq_count) {
-        if (timer_irq_count > 2)
-            timer_irq_count = 2;
-        timer_irq_count--;
-        timer_irq_pending = 1;
+    if (cpu_ticks_enabled) {
+        hw_error("cannot save state if virtual timers are running");
     }
-    gui_refresh_count += timer_ms;
-    if (gui_refresh_count >= GUI_REFRESH_INTERVAL) {
-        gui_refresh_count = 0;
-        gui_refresh_pending = 1;
+    qemu_put_be64s(f, &cpu_ticks_offset);
+    qemu_put_be64s(f, &ticks_per_sec);
+}
+
+static int timer_load(QEMUFile *f, void *opaque, int version_id)
+{
+    if (version_id != 1)
+        return -EINVAL;
+    if (cpu_ticks_enabled) {
+        return -EINVAL;
     }
+    qemu_get_be64s(f, &cpu_ticks_offset);
+    qemu_get_be64s(f, &ticks_per_sec);
+    return 0;
+}
 
-    if (gui_refresh_pending || timer_irq_pending) {
-        /* just exit from the cpu to have a chance to handle timers */
+#ifdef _WIN32
+void CALLBACK host_alarm_handler(UINT uTimerID, UINT uMsg, 
+                                 DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
+#else
+static void host_alarm_handler(int host_signum)
+#endif
+{
+#if 0
+#define DISP_FREQ 1000
+    {
+        static int64_t delta_min = INT64_MAX;
+        static int64_t delta_max, delta_cum, last_clock, delta, ti;
+        static int count;
+        ti = qemu_get_clock(vm_clock);
+        if (last_clock != 0) {
+            delta = ti - last_clock;
+            if (delta < delta_min)
+                delta_min = delta;
+            if (delta > delta_max)
+                delta_max = delta;
+            delta_cum += delta;
+            if (++count == DISP_FREQ) {
+                printf("timer: min=%lld us max=%lld us avg=%lld us avg_freq=%0.3f Hz\n",
+                       muldiv64(delta_min, 1000000, ticks_per_sec),
+                       muldiv64(delta_max, 1000000, ticks_per_sec),
+                       muldiv64(delta_cum, 1000000 / DISP_FREQ, ticks_per_sec),
+                       (double)ticks_per_sec / ((double)delta_cum / DISP_FREQ));
+                count = 0;
+                delta_min = INT64_MAX;
+                delta_max = 0;
+                delta_cum = 0;
+            }
+        }
+        last_clock = ti;
+    }
+#endif
+    if (qemu_timer_expired(active_timers[QEMU_TIMER_VIRTUAL],
+                           qemu_get_clock(vm_clock)) ||
+        qemu_timer_expired(active_timers[QEMU_TIMER_REALTIME],
+                           qemu_get_clock(rt_clock))) {
+        /* stop the cpu because a timer occured */
         cpu_interrupt(global_env, CPU_INTERRUPT_EXIT);
     }
 }
 
-#define MAX_IO_HANDLERS 64
+#ifndef _WIN32
 
-typedef struct IOHandlerRecord {
-    int fd;
-    IOCanRWHandler *fd_can_read;
-    IOReadHandler *fd_read;
-    void *opaque;
-    /* temporary data */
-    struct pollfd *ufd;
-    int max_size;
-} IOHandlerRecord;
+#if defined(__linux__)
 
-static IOHandlerRecord io_handlers[MAX_IO_HANDLERS];
-static int nb_io_handlers = 0;
+#define RTC_FREQ 1024
 
-int add_fd_read_handler(int fd, IOCanRWHandler *fd_can_read, 
-                        IOReadHandler *fd_read, void *opaque)
+static int rtc_fd;
+
+static int start_rtc_timer(void)
+{
+    rtc_fd = open("/dev/rtc", O_RDONLY);
+    if (rtc_fd < 0)
+        return -1;
+    if (ioctl(rtc_fd, RTC_IRQP_SET, RTC_FREQ) < 0) {
+        fprintf(stderr, "Could not configure '/dev/rtc' to have a 1024 Hz timer. This is not a fatal\n"
+                "error, but for better emulation accuracy either use a 2.6 host Linux kernel or\n"
+                "type 'echo 1024 > /proc/sys/dev/rtc/max-user-freq' as root.\n");
+        goto fail;
+    }
+    if (ioctl(rtc_fd, RTC_PIE_ON, 0) < 0) {
+    fail:
+        close(rtc_fd);
+        return -1;
+    }
+    pit_min_timer_count = PIT_FREQ / RTC_FREQ;
+    return 0;
+}
+
+#else
+
+static int start_rtc_timer(void)
+{
+    return -1;
+}
+
+#endif /* !defined(__linux__) */
+
+#endif /* !defined(_WIN32) */
+
+static void init_timers(void)
+{
+    rt_clock = qemu_new_clock(QEMU_TIMER_REALTIME);
+    vm_clock = qemu_new_clock(QEMU_TIMER_VIRTUAL);
+
+#ifdef _WIN32
+    {
+        int count=0;
+        timerID = timeSetEvent(10,    // interval (ms)
+                               0,     // resolution
+                               host_alarm_handler, // function
+                               (DWORD)&count,  // user parameter
+                               TIME_PERIODIC | TIME_CALLBACK_FUNCTION);
+       if( !timerID ) {
+            perror("failed timer alarm");
+            exit(1);
+       }
+    }
+    pit_min_timer_count = ((uint64_t)10000 * PIT_FREQ) / 1000000;
+#else
+    {
+        struct sigaction act;
+        struct itimerval itv;
+        
+        /* get times() syscall frequency */
+        timer_freq = sysconf(_SC_CLK_TCK);
+        
+        /* timer signal */
+        sigfillset(&act.sa_mask);
+        act.sa_flags = 0;
+#if defined (TARGET_I386) && defined(USE_CODE_COPY)
+        act.sa_flags |= SA_ONSTACK;
+#endif
+        act.sa_handler = host_alarm_handler;
+        sigaction(SIGALRM, &act, NULL);
+
+        itv.it_interval.tv_sec = 0;
+        itv.it_interval.tv_usec = 1000;
+        itv.it_value.tv_sec = 0;
+        itv.it_value.tv_usec = 10 * 1000;
+        setitimer(ITIMER_REAL, &itv, NULL);
+        /* we probe the tick duration of the kernel to inform the user if
+           the emulated kernel requested a too high timer frequency */
+        getitimer(ITIMER_REAL, &itv);
+
+#if defined(__linux__)
+        if (itv.it_interval.tv_usec > 1000) {
+            /* try to use /dev/rtc to have a faster timer */
+            if (start_rtc_timer() < 0)
+                goto use_itimer;
+            /* disable itimer */
+            itv.it_interval.tv_sec = 0;
+            itv.it_interval.tv_usec = 0;
+            itv.it_value.tv_sec = 0;
+            itv.it_value.tv_usec = 0;
+            setitimer(ITIMER_REAL, &itv, NULL);
+
+            /* use the RTC */
+            sigaction(SIGIO, &act, NULL);
+            fcntl(rtc_fd, F_SETFL, O_ASYNC);
+            fcntl(rtc_fd, F_SETOWN, getpid());
+        } else 
+#endif /* defined(__linux__) */
+        {
+        use_itimer:
+            pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * 
+                                   PIT_FREQ) / 1000000;
+        }
+    }
+#endif
+}
+
+void quit_timers(void)
+{
+#ifdef _WIN32
+    timeKillEvent(timerID);
+#endif
+}
+
+/***********************************************************/
+/* character device */
+
+int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
+{
+    return s->chr_write(s, buf, len);
+}
+
+void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
+{
+    char buf[4096];
+    va_list ap;
+    va_start(ap, fmt);
+    vsnprintf(buf, sizeof(buf), fmt, ap);
+    qemu_chr_write(s, buf, strlen(buf));
+    va_end(ap);
+}
+
+void qemu_chr_send_event(CharDriverState *s, int event)
+{
+    if (s->chr_send_event)
+        s->chr_send_event(s, event);
+}
+
+void qemu_chr_add_read_handler(CharDriverState *s, 
+                               IOCanRWHandler *fd_can_read, 
+                               IOReadHandler *fd_read, void *opaque)
+{
+    s->chr_add_read_handler(s, fd_can_read, fd_read, opaque);
+}
+             
+void qemu_chr_add_event_handler(CharDriverState *s, IOEventHandler *chr_event)
+{
+    s->chr_event = chr_event;
+}
+
+static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+    return len;
+}
+
+static void null_chr_add_read_handler(CharDriverState *chr, 
+                                    IOCanRWHandler *fd_can_read, 
+                                    IOReadHandler *fd_read, void *opaque)
+{
+}
+
+CharDriverState *qemu_chr_open_null(void)
+{
+    CharDriverState *chr;
+
+    chr = qemu_mallocz(sizeof(CharDriverState));
+    if (!chr)
+        return NULL;
+    chr->chr_write = null_chr_write;
+    chr->chr_add_read_handler = null_chr_add_read_handler;
+    return chr;
+}
+
+#ifndef _WIN32
+
+typedef struct {
+    int fd_in, fd_out;
+    /* for nographic stdio only */
+    IOCanRWHandler *fd_can_read; 
+    IOReadHandler *fd_read;
+    void *fd_opaque;
+} FDCharDriver;
+
+#define STDIO_MAX_CLIENTS 2
+
+static int stdio_nb_clients;
+static CharDriverState *stdio_clients[STDIO_MAX_CLIENTS];
+
+static int unix_write(int fd, const uint8_t *buf, int len1)
+{
+    int ret, len;
+
+    len = len1;
+    while (len > 0) {
+        ret = write(fd, buf, len);
+        if (ret < 0) {
+            if (errno != EINTR && errno != EAGAIN)
+                return -1;
+        } else if (ret == 0) {
+            break;
+        } else {
+            buf += ret;
+            len -= ret;
+        }
+    }
+    return len1 - len;
+}
+
+static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+    FDCharDriver *s = chr->opaque;
+    return unix_write(s->fd_out, buf, len);
+}
+
+static void fd_chr_add_read_handler(CharDriverState *chr, 
+                                    IOCanRWHandler *fd_can_read, 
+                                    IOReadHandler *fd_read, void *opaque)
+{
+    FDCharDriver *s = chr->opaque;
+
+    if (nographic && s->fd_in == 0) {
+        s->fd_can_read = fd_can_read;
+        s->fd_read = fd_read;
+        s->fd_opaque = opaque;
+    } else {
+        qemu_add_fd_read_handler(s->fd_in, fd_can_read, fd_read, opaque);
+    }
+}
+
+/* open a character device to a unix fd */
+CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
+{
+    CharDriverState *chr;
+    FDCharDriver *s;
+
+    chr = qemu_mallocz(sizeof(CharDriverState));
+    if (!chr)
+        return NULL;
+    s = qemu_mallocz(sizeof(FDCharDriver));
+    if (!s) {
+        free(chr);
+        return NULL;
+    }
+    s->fd_in = fd_in;
+    s->fd_out = fd_out;
+    chr->opaque = s;
+    chr->chr_write = fd_chr_write;
+    chr->chr_add_read_handler = fd_chr_add_read_handler;
+    return chr;
+}
+
+/* for STDIO, we handle the case where several clients use it
+   (nographic mode) */
+
+#define TERM_ESCAPE 0x01 /* ctrl-a is used for escape */
+
+static int term_got_escape, client_index;
+
+void term_print_help(void)
+{
+    printf("\n"
+           "C-a h    print this help\n"
+           "C-a x    exit emulator\n"
+           "C-a s    save disk data back to file (if -snapshot)\n"
+           "C-a b    send break (magic sysrq)\n"
+           "C-a c    switch between console and monitor\n"
+           "C-a C-a  send C-a\n"
+           );
+}
+
+/* called when a char is received */
+static void stdio_received_byte(int ch)
+{
+    if (term_got_escape) {
+        term_got_escape = 0;
+        switch(ch) {
+        case 'h':
+            term_print_help();
+            break;
+        case 'x':
+            exit(0);
+            break;
+        case 's': 
+            {
+                int i;
+                for (i = 0; i < MAX_DISKS; i++) {
+                    if (bs_table[i])
+                        bdrv_commit(bs_table[i]);
+                }
+            }
+            break;
+        case 'b':
+            if (client_index < stdio_nb_clients) {
+                CharDriverState *chr;
+                FDCharDriver *s;
+
+                chr = stdio_clients[client_index];
+                s = chr->opaque;
+                chr->chr_event(s->fd_opaque, CHR_EVENT_BREAK);
+            }
+            break;
+        case 'c':
+            client_index++;
+            if (client_index >= stdio_nb_clients)
+                client_index = 0;
+            if (client_index == 0) {
+                /* send a new line in the monitor to get the prompt */
+                ch = '\r';
+                goto send_char;
+            }
+            break;
+        case TERM_ESCAPE:
+            goto send_char;
+        }
+    } else if (ch == TERM_ESCAPE) {
+        term_got_escape = 1;
+    } else {
+    send_char:
+        if (client_index < stdio_nb_clients) {
+            uint8_t buf[1];
+            CharDriverState *chr;
+            FDCharDriver *s;
+            
+            chr = stdio_clients[client_index];
+            s = chr->opaque;
+            buf[0] = ch;
+            /* XXX: should queue the char if the device is not
+               ready */
+            if (s->fd_can_read(s->fd_opaque) > 0) 
+                s->fd_read(s->fd_opaque, buf, 1);
+        }
+    }
+}
+
+static int stdio_can_read(void *opaque)
+{
+    /* XXX: not strictly correct */
+    return 1;
+}
+
+static void stdio_read(void *opaque, const uint8_t *buf, int size)
+{
+    int i;
+    for(i = 0; i < size; i++)
+        stdio_received_byte(buf[i]);
+}
+
+/* init terminal so that we can grab keys */
+static struct termios oldtty;
+static int old_fd0_flags;
+
+static void term_exit(void)
+{
+    tcsetattr (0, TCSANOW, &oldtty);
+    fcntl(0, F_SETFL, old_fd0_flags);
+}
+
+static void term_init(void)
+{
+    struct termios tty;
+
+    tcgetattr (0, &tty);
+    oldtty = tty;
+    old_fd0_flags = fcntl(0, F_GETFL);
+
+    tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
+                          |INLCR|IGNCR|ICRNL|IXON);
+    tty.c_oflag |= OPOST;
+    tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
+    /* if graphical mode, we allow Ctrl-C handling */
+    if (nographic)
+        tty.c_lflag &= ~ISIG;
+    tty.c_cflag &= ~(CSIZE|PARENB);
+    tty.c_cflag |= CS8;
+    tty.c_cc[VMIN] = 1;
+    tty.c_cc[VTIME] = 0;
+    
+    tcsetattr (0, TCSANOW, &tty);
+
+    atexit(term_exit);
+
+    fcntl(0, F_SETFL, O_NONBLOCK);
+}
+
+CharDriverState *qemu_chr_open_stdio(void)
+{
+    CharDriverState *chr;
+
+    if (nographic) {
+        if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
+            return NULL;
+        chr = qemu_chr_open_fd(0, 1);
+        if (stdio_nb_clients == 0)
+            qemu_add_fd_read_handler(0, stdio_can_read, stdio_read, NULL);
+        client_index = stdio_nb_clients;
+    } else {
+        if (stdio_nb_clients != 0)
+            return NULL;
+        chr = qemu_chr_open_fd(0, 1);
+    }
+    stdio_clients[stdio_nb_clients++] = chr;
+    if (stdio_nb_clients == 1) {
+        /* set the terminal in raw mode */
+        term_init();
+    }
+    return chr;
+}
+
+#if defined(__linux__)
+CharDriverState *qemu_chr_open_pty(void)
+{
+    char slave_name[1024];
+    int master_fd, slave_fd;
+    
+    /* Not satisfying */
+    if (openpty(&master_fd, &slave_fd, slave_name, NULL, NULL) < 0) {
+        return NULL;
+    }
+    fprintf(stderr, "char device redirected to %s\n", slave_name);
+    return qemu_chr_open_fd(master_fd, master_fd);
+}
+#else
+CharDriverState *qemu_chr_open_pty(void)
+{
+    return NULL;
+}
+#endif
+
+#endif /* !defined(_WIN32) */
+
+CharDriverState *qemu_chr_open(const char *filename)
+{
+    if (!strcmp(filename, "vc")) {
+        return text_console_init(&display_state);
+    } else if (!strcmp(filename, "null")) {
+        return qemu_chr_open_null();
+    } else 
+#ifndef _WIN32
+    if (!strcmp(filename, "pty")) {
+        return qemu_chr_open_pty();
+    } else if (!strcmp(filename, "stdio")) {
+        return qemu_chr_open_stdio();
+    } else 
+#endif
+    {
+        return NULL;
+    }
+}
+
+/***********************************************************/
+/* Linux network device redirectors */
+
+void hex_dump(FILE *f, const uint8_t *buf, int size)
+{
+    int len, i, j, c;
+
+    for(i=0;i<size;i+=16) {
+        len = size - i;
+        if (len > 16)
+            len = 16;
+        fprintf(f, "%08x ", i);
+        for(j=0;j<16;j++) {
+            if (j < len)
+                fprintf(f, " %02x", buf[i+j]);
+            else
+                fprintf(f, "   ");
+        }
+        fprintf(f, " ");
+        for(j=0;j<len;j++) {
+            c = buf[i+j];
+            if (c < ' ' || c > '~')
+                c = '.';
+            fprintf(f, "%c", c);
+        }
+        fprintf(f, "\n");
+    }
+}
+
+void qemu_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
+{
+    nd->send_packet(nd, buf, size);
+}
+
+void qemu_add_read_packet(NetDriverState *nd, IOCanRWHandler *fd_can_read, 
+                          IOReadHandler *fd_read, void *opaque)
+{
+    nd->add_read_packet(nd, fd_can_read, fd_read, opaque);
+}
+
+/* dummy network adapter */
+
+static void dummy_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
+{
+}
+
+static void dummy_add_read_packet(NetDriverState *nd, 
+                                  IOCanRWHandler *fd_can_read, 
+                                  IOReadHandler *fd_read, void *opaque)
+{
+}
+
+static int net_dummy_init(NetDriverState *nd)
+{
+    nd->send_packet = dummy_send_packet;
+    nd->add_read_packet = dummy_add_read_packet;
+    pstrcpy(nd->ifname, sizeof(nd->ifname), "dummy");
+    return 0;
+}
+
+#if defined(CONFIG_SLIRP)
+
+/* slirp network adapter */
+
+static void *slirp_fd_opaque;
+static IOCanRWHandler *slirp_fd_can_read;
+static IOReadHandler *slirp_fd_read;
+static int slirp_inited;
+
+int slirp_can_output(void)
+{
+    return slirp_fd_can_read(slirp_fd_opaque);
+}
+
+void slirp_output(const uint8_t *pkt, int pkt_len)
+{
+#if 0
+    printf("output:\n");
+    hex_dump(stdout, pkt, pkt_len);
+#endif
+    slirp_fd_read(slirp_fd_opaque, pkt, pkt_len);
+}
+
+static void slirp_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
+{
+#if 0
+    printf("input:\n");
+    hex_dump(stdout, buf, size);
+#endif
+    slirp_input(buf, size);
+}
+
+static void slirp_add_read_packet(NetDriverState *nd, 
+                                  IOCanRWHandler *fd_can_read, 
+                                  IOReadHandler *fd_read, void *opaque)
+{
+    slirp_fd_opaque = opaque;
+    slirp_fd_can_read = fd_can_read;
+    slirp_fd_read = fd_read;
+}
+
+static int net_slirp_init(NetDriverState *nd)
+{
+    if (!slirp_inited) {
+        slirp_inited = 1;
+        slirp_init();
+    }
+    nd->send_packet = slirp_send_packet;
+    nd->add_read_packet = slirp_add_read_packet;
+    pstrcpy(nd->ifname, sizeof(nd->ifname), "slirp");
+    return 0;
+}
+
+static int get_str_sep(char *buf, int buf_size, const char **pp, int sep)
+{
+    const char *p, *p1;
+    int len;
+    p = *pp;
+    p1 = strchr(p, sep);
+    if (!p1)
+        return -1;
+    len = p1 - p;
+    p1++;
+    if (buf_size > 0) {
+        if (len > buf_size - 1)
+            len = buf_size - 1;
+        memcpy(buf, p, len);
+        buf[len] = '\0';
+    }
+    *pp = p1;
+    return 0;
+}
+
+static void net_slirp_redir(const char *redir_str)
+{
+    int is_udp;
+    char buf[256], *r;
+    const char *p;
+    struct in_addr guest_addr;
+    int host_port, guest_port;
+    
+    if (!slirp_inited) {
+        slirp_inited = 1;
+        slirp_init();
+    }
+
+    p = redir_str;
+    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
+        goto fail;
+    if (!strcmp(buf, "tcp")) {
+        is_udp = 0;
+    } else if (!strcmp(buf, "udp")) {
+        is_udp = 1;
+    } else {
+        goto fail;
+    }
+
+    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
+        goto fail;
+    host_port = strtol(buf, &r, 0);
+    if (r == buf)
+        goto fail;
+
+    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
+        goto fail;
+    if (buf[0] == '\0') {
+        pstrcpy(buf, sizeof(buf), "10.0.2.15");
+    }
+    if (!inet_aton(buf, &guest_addr))
+        goto fail;
+    
+    guest_port = strtol(p, &r, 0);
+    if (r == p)
+        goto fail;
+    
+    if (slirp_redir(is_udp, host_port, guest_addr, guest_port) < 0) {
+        fprintf(stderr, "qemu: could not set up redirection\n");
+        exit(1);
+    }
+    return;
+ fail:
+    fprintf(stderr, "qemu: syntax: -redir [tcp|udp]:host-port:[guest-host]:guest-port\n");
+    exit(1);
+}
+    
+#ifndef _WIN32
+
+char smb_dir[1024];
+
+static void smb_exit(void)
+{
+    DIR *d;
+    struct dirent *de;
+    char filename[1024];
+
+    /* erase all the files in the directory */
+    d = opendir(smb_dir);
+    for(;;) {
+        de = readdir(d);
+        if (!de)
+            break;
+        if (strcmp(de->d_name, ".") != 0 &&
+            strcmp(de->d_name, "..") != 0) {
+            snprintf(filename, sizeof(filename), "%s/%s", 
+                     smb_dir, de->d_name);
+            unlink(filename);
+        }
+    }
+    closedir(d);
+    rmdir(smb_dir);
+}
+
+/* automatic user mode samba server configuration */
+void net_slirp_smb(const char *exported_dir)
+{
+    char smb_conf[1024];
+    char smb_cmdline[1024];
+    FILE *f;
+
+    if (!slirp_inited) {
+        slirp_inited = 1;
+        slirp_init();
+    }
+
+    /* XXX: better tmp dir construction */
+    snprintf(smb_dir, sizeof(smb_dir), "/tmp/qemu-smb.%d", getpid());
+    if (mkdir(smb_dir, 0700) < 0) {
+        fprintf(stderr, "qemu: could not create samba server dir '%s'\n", smb_dir);
+        exit(1);
+    }
+    snprintf(smb_conf, sizeof(smb_conf), "%s/%s", smb_dir, "smb.conf");
+    
+    f = fopen(smb_conf, "w");
+    if (!f) {
+        fprintf(stderr, "qemu: could not create samba server configuration file '%s'\n", smb_conf);
+        exit(1);
+    }
+    fprintf(f, 
+            "[global]\n"
+            "pid directory=%s\n"
+            "lock directory=%s\n"
+            "log file=%s/log.smbd\n"
+            "smb passwd file=%s/smbpasswd\n"
+            "security = share\n"
+            "[qemu]\n"
+            "path=%s\n"
+            "read only=no\n"
+            "guest ok=yes\n",
+            smb_dir,
+            smb_dir,
+            smb_dir,
+            smb_dir,
+            exported_dir
+            );
+    fclose(f);
+    atexit(smb_exit);
+
+    snprintf(smb_cmdline, sizeof(smb_cmdline), "/usr/sbin/smbd -s %s",
+             smb_conf);
+    
+    slirp_add_exec(0, smb_cmdline, 4, 139);
+}
+
+#endif /* !defined(_WIN32) */
+
+#endif /* CONFIG_SLIRP */
+
+#if !defined(_WIN32)
+#ifdef _BSD
+static int tun_open(char *ifname, int ifname_size)
+{
+    int fd;
+    char *dev;
+    struct stat s;
+
+    fd = open("/dev/tap", O_RDWR);
+    if (fd < 0) {
+        fprintf(stderr, "warning: could not open /dev/tap: no virtual network emulation\n");
+        return -1;
+    }
+
+    fstat(fd, &s);
+    dev = devname(s.st_rdev, S_IFCHR);
+    pstrcpy(ifname, ifname_size, dev);
+
+    fcntl(fd, F_SETFL, O_NONBLOCK);
+    return fd;
+}
+#else
+static int tun_open(char *ifname, int ifname_size)
+{
+    struct ifreq ifr;
+    int fd, ret;
+    
+    fd = open("/dev/net/tun", O_RDWR);
+    if (fd < 0) {
+        fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
+        return -1;
+    }
+    memset(&ifr, 0, sizeof(ifr));
+    ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
+    pstrcpy(ifr.ifr_name, IFNAMSIZ, "tun%d");
+    ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
+    if (ret != 0) {
+        fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
+        close(fd);
+        return -1;
+    }
+    printf("Connected to host network interface: %s\n", ifr.ifr_name);
+    pstrcpy(ifname, ifname_size, ifr.ifr_name);
+    fcntl(fd, F_SETFL, O_NONBLOCK);
+    return fd;
+}
+#endif
+
+static void tun_send_packet(NetDriverState *nd, const uint8_t *buf, int size)
+{
+    write(nd->fd, buf, size);
+}
+
+static void tun_add_read_packet(NetDriverState *nd, 
+                                IOCanRWHandler *fd_can_read, 
+                                IOReadHandler *fd_read, void *opaque)
+{
+    qemu_add_fd_read_handler(nd->fd, fd_can_read, fd_read, opaque);
+}
+
+static int net_tun_init(NetDriverState *nd)
+{
+    int pid, status;
+    char *args[3];
+    char **parg;
+
+    nd->fd = tun_open(nd->ifname, sizeof(nd->ifname));
+    if (nd->fd < 0)
+        return -1;
+
+    /* try to launch network init script */
+    pid = fork();
+    if (pid >= 0) {
+        if (pid == 0) {
+            parg = args;
+            *parg++ = network_script;
+            *parg++ = nd->ifname;
+            *parg++ = NULL;
+            execv(network_script, args);
+            exit(1);
+        }
+        while (waitpid(pid, &status, 0) != pid);
+        if (!WIFEXITED(status) ||
+            WEXITSTATUS(status) != 0) {
+            fprintf(stderr, "%s: could not launch network script\n",
+                    network_script);
+        }
+    }
+    nd->send_packet = tun_send_packet;
+    nd->add_read_packet = tun_add_read_packet;
+    return 0;
+}
+
+static int net_fd_init(NetDriverState *nd, int fd)
+{
+    nd->fd = fd;
+    nd->send_packet = tun_send_packet;
+    nd->add_read_packet = tun_add_read_packet;
+    pstrcpy(nd->ifname, sizeof(nd->ifname), "tunfd");
+    return 0;
+}
+
+#endif /* !_WIN32 */
+
+/***********************************************************/
+/* dumb display */
+
+static void dumb_update(DisplayState *ds, int x, int y, int w, int h)
+{
+}
+
+static void dumb_resize(DisplayState *ds, int w, int h)
+{
+}
+
+static void dumb_refresh(DisplayState *ds)
+{
+    vga_update_display();
+}
+
+void dumb_display_init(DisplayState *ds)
+{
+    ds->data = NULL;
+    ds->linesize = 0;
+    ds->depth = 0;
+    ds->dpy_update = dumb_update;
+    ds->dpy_resize = dumb_resize;
+    ds->dpy_refresh = dumb_refresh;
+}
+
+#if !defined(CONFIG_SOFTMMU)
+/***********************************************************/
+/* cpu signal handler */
+static void host_segv_handler(int host_signum, siginfo_t *info, 
+                              void *puc)
+{
+    if (cpu_signal_handler(host_signum, info, puc))
+        return;
+    if (stdio_nb_clients > 0)
+        term_exit();
+    abort();
+}
+#endif
+
+/***********************************************************/
+/* I/O handling */
+
+#define MAX_IO_HANDLERS 64
+
+typedef struct IOHandlerRecord {
+    int fd;
+    IOCanRWHandler *fd_can_read;
+    IOReadHandler *fd_read;
+    void *opaque;
+    /* temporary data */
+    struct pollfd *ufd;
+    int max_size;
+    struct IOHandlerRecord *next;
+} IOHandlerRecord;
+
+static IOHandlerRecord *first_io_handler;
+
+int qemu_add_fd_read_handler(int fd, IOCanRWHandler *fd_can_read, 
+                             IOReadHandler *fd_read, void *opaque)
 {
     IOHandlerRecord *ioh;
 
-    if (nb_io_handlers >= MAX_IO_HANDLERS)
-        return -1;
-    ioh = &io_handlers[nb_io_handlers];
-    ioh->fd = fd;
-    ioh->fd_can_read = fd_can_read;
-    ioh->fd_read = fd_read;
-    ioh->opaque = opaque;
-    nb_io_handlers++;
+    ioh = qemu_mallocz(sizeof(IOHandlerRecord));
+    if (!ioh)
+        return -1;
+    ioh->fd = fd;
+    ioh->fd_can_read = fd_can_read;
+    ioh->fd_read = fd_read;
+    ioh->opaque = opaque;
+    ioh->next = first_io_handler;
+    first_io_handler = ioh;
+    return 0;
+}
+
+void qemu_del_fd_read_handler(int fd)
+{
+    IOHandlerRecord **pioh, *ioh;
+
+    pioh = &first_io_handler;
+    for(;;) {
+        ioh = *pioh;
+        if (ioh == NULL)
+            break;
+        if (ioh->fd == fd) {
+            *pioh = ioh->next;
+            break;
+        }
+        pioh = &ioh->next;
+    }
+}
+
+/***********************************************************/
+/* savevm/loadvm support */
+
+void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size)
+{
+    fwrite(buf, 1, size, f);
+}
+
+void qemu_put_byte(QEMUFile *f, int v)
+{
+    fputc(v, f);
+}
+
+void qemu_put_be16(QEMUFile *f, unsigned int v)
+{
+    qemu_put_byte(f, v >> 8);
+    qemu_put_byte(f, v);
+}
+
+void qemu_put_be32(QEMUFile *f, unsigned int v)
+{
+    qemu_put_byte(f, v >> 24);
+    qemu_put_byte(f, v >> 16);
+    qemu_put_byte(f, v >> 8);
+    qemu_put_byte(f, v);
+}
+
+void qemu_put_be64(QEMUFile *f, uint64_t v)
+{
+    qemu_put_be32(f, v >> 32);
+    qemu_put_be32(f, v);
+}
+
+int qemu_get_buffer(QEMUFile *f, uint8_t *buf, int size)
+{
+    return fread(buf, 1, size, f);
+}
+
+int qemu_get_byte(QEMUFile *f)
+{
+    int v;
+    v = fgetc(f);
+    if (v == EOF)
+        return 0;
+    else
+        return v;
+}
+
+unsigned int qemu_get_be16(QEMUFile *f)
+{
+    unsigned int v;
+    v = qemu_get_byte(f) << 8;
+    v |= qemu_get_byte(f);
+    return v;
+}
+
+unsigned int qemu_get_be32(QEMUFile *f)
+{
+    unsigned int v;
+    v = qemu_get_byte(f) << 24;
+    v |= qemu_get_byte(f) << 16;
+    v |= qemu_get_byte(f) << 8;
+    v |= qemu_get_byte(f);
+    return v;
+}
+
+uint64_t qemu_get_be64(QEMUFile *f)
+{
+    uint64_t v;
+    v = (uint64_t)qemu_get_be32(f) << 32;
+    v |= qemu_get_be32(f);
+    return v;
+}
+
+int64_t qemu_ftell(QEMUFile *f)
+{
+    return ftell(f);
+}
+
+int64_t qemu_fseek(QEMUFile *f, int64_t pos, int whence)
+{
+    if (fseek(f, pos, whence) < 0)
+        return -1;
+    return ftell(f);
+}
+
+typedef struct SaveStateEntry {
+    char idstr[256];
+    int instance_id;
+    int version_id;
+    SaveStateHandler *save_state;
+    LoadStateHandler *load_state;
+    void *opaque;
+    struct SaveStateEntry *next;
+} SaveStateEntry;
+
+static SaveStateEntry *first_se;
+
+int register_savevm(const char *idstr, 
+                    int instance_id, 
+                    int version_id,
+                    SaveStateHandler *save_state,
+                    LoadStateHandler *load_state,
+                    void *opaque)
+{
+    SaveStateEntry *se, **pse;
+
+    se = qemu_malloc(sizeof(SaveStateEntry));
+    if (!se)
+        return -1;
+    pstrcpy(se->idstr, sizeof(se->idstr), idstr);
+    se->instance_id = instance_id;
+    se->version_id = version_id;
+    se->save_state = save_state;
+    se->load_state = load_state;
+    se->opaque = opaque;
+    se->next = NULL;
+
+    /* add at the end of list */
+    pse = &first_se;
+    while (*pse != NULL)
+        pse = &(*pse)->next;
+    *pse = se;
+    return 0;
+}
+
+#define QEMU_VM_FILE_MAGIC   0x5145564d
+#define QEMU_VM_FILE_VERSION 0x00000001
+
+int qemu_savevm(const char *filename)
+{
+    SaveStateEntry *se;
+    QEMUFile *f;
+    int len, len_pos, cur_pos, saved_vm_running, ret;
+
+    saved_vm_running = vm_running;
+    vm_stop(0);
+
+    f = fopen(filename, "wb");
+    if (!f) {
+        ret = -1;
+        goto the_end;
+    }
+
+    qemu_put_be32(f, QEMU_VM_FILE_MAGIC);
+    qemu_put_be32(f, QEMU_VM_FILE_VERSION);
+
+    for(se = first_se; se != NULL; se = se->next) {
+        /* ID string */
+        len = strlen(se->idstr);
+        qemu_put_byte(f, len);
+        qemu_put_buffer(f, se->idstr, len);
+
+        qemu_put_be32(f, se->instance_id);
+        qemu_put_be32(f, se->version_id);
+
+        /* record size: filled later */
+        len_pos = ftell(f);
+        qemu_put_be32(f, 0);
+        
+        se->save_state(f, se->opaque);
+
+        /* fill record size */
+        cur_pos = ftell(f);
+        len = ftell(f) - len_pos - 4;
+        fseek(f, len_pos, SEEK_SET);
+        qemu_put_be32(f, len);
+        fseek(f, cur_pos, SEEK_SET);
+    }
+
+    fclose(f);
+    ret = 0;
+ the_end:
+    if (saved_vm_running)
+        vm_start();
+    return ret;
+}
+
+static SaveStateEntry *find_se(const char *idstr, int instance_id)
+{
+    SaveStateEntry *se;
+
+    for(se = first_se; se != NULL; se = se->next) {
+        if (!strcmp(se->idstr, idstr) && 
+            instance_id == se->instance_id)
+            return se;
+    }
+    return NULL;
+}
+
+int qemu_loadvm(const char *filename)
+{
+    SaveStateEntry *se;
+    QEMUFile *f;
+    int len, cur_pos, ret, instance_id, record_len, version_id;
+    int saved_vm_running;
+    unsigned int v;
+    char idstr[256];
+    
+    saved_vm_running = vm_running;
+    vm_stop(0);
+
+    f = fopen(filename, "rb");
+    if (!f) {
+        ret = -1;
+        goto the_end;
+    }
+
+    v = qemu_get_be32(f);
+    if (v != QEMU_VM_FILE_MAGIC)
+        goto fail;
+    v = qemu_get_be32(f);
+    if (v != QEMU_VM_FILE_VERSION) {
+    fail:
+        fclose(f);
+        ret = -1;
+        goto the_end;
+    }
+    for(;;) {
+#if defined (DO_TB_FLUSH)
+        tb_flush(global_env);
+#endif
+        len = qemu_get_byte(f);
+        if (feof(f))
+            break;
+        qemu_get_buffer(f, idstr, len);
+        idstr[len] = '\0';
+        instance_id = qemu_get_be32(f);
+        version_id = qemu_get_be32(f);
+        record_len = qemu_get_be32(f);
+#if 0
+        printf("idstr=%s instance=0x%x version=%d len=%d\n", 
+               idstr, instance_id, version_id, record_len);
+#endif
+        cur_pos = ftell(f);
+        se = find_se(idstr, instance_id);
+        if (!se) {
+            fprintf(stderr, "qemu: warning: instance 0x%x of device '%s' not present in current VM\n", 
+                    instance_id, idstr);
+        } else {
+            ret = se->load_state(f, se->opaque, version_id);
+            if (ret < 0) {
+                fprintf(stderr, "qemu: warning: error while loading state for instance 0x%x of device '%s'\n", 
+                        instance_id, idstr);
+            }
+        }
+        /* always seek to exact end of record */
+        qemu_fseek(f, cur_pos + record_len, SEEK_SET);
+    }
+    fclose(f);
+    ret = 0;
+ the_end:
+    if (saved_vm_running)
+        vm_start();
+    return ret;
+}
+
+/***********************************************************/
+/* cpu save/restore */
+
+#if defined(TARGET_I386)
+
+static void cpu_put_seg(QEMUFile *f, SegmentCache *dt)
+{
+    qemu_put_be32(f, dt->selector);
+    qemu_put_be32(f, (uint32_t)dt->base);
+    qemu_put_be32(f, dt->limit);
+    qemu_put_be32(f, dt->flags);
+}
+
+static void cpu_get_seg(QEMUFile *f, SegmentCache *dt)
+{
+    dt->selector = qemu_get_be32(f);
+    dt->base = (uint8_t *)qemu_get_be32(f);
+    dt->limit = qemu_get_be32(f);
+    dt->flags = qemu_get_be32(f);
+}
+
+void cpu_save(QEMUFile *f, void *opaque)
+{
+    CPUState *env = opaque;
+    uint16_t fptag, fpus, fpuc;
+    uint32_t hflags;
+    int i;
+
+    for(i = 0; i < 8; i++)
+        qemu_put_be32s(f, &env->regs[i]);
+    qemu_put_be32s(f, &env->eip);
+    qemu_put_be32s(f, &env->eflags);
+    qemu_put_be32s(f, &env->eflags);
+    hflags = env->hflags; /* XXX: suppress most of the redundant hflags */
+    qemu_put_be32s(f, &hflags);
+    
+    /* FPU */
+    fpuc = env->fpuc;
+    fpus = (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11;
+    fptag = 0;
+    for (i=7; i>=0; i--) {
+       fptag <<= 2;
+       if (env->fptags[i]) {
+            fptag |= 3;
+        }
+    }
+    
+    qemu_put_be16s(f, &fpuc);
+    qemu_put_be16s(f, &fpus);
+    qemu_put_be16s(f, &fptag);
+
+    for(i = 0; i < 8; i++) {
+        uint64_t mant;
+        uint16_t exp;
+        cpu_get_fp80(&mant, &exp, env->fpregs[i]);
+        qemu_put_be64(f, mant);
+        qemu_put_be16(f, exp);
+    }
+
+    for(i = 0; i < 6; i++)
+        cpu_put_seg(f, &env->segs[i]);
+    cpu_put_seg(f, &env->ldt);
+    cpu_put_seg(f, &env->tr);
+    cpu_put_seg(f, &env->gdt);
+    cpu_put_seg(f, &env->idt);
+    
+    qemu_put_be32s(f, &env->sysenter_cs);
+    qemu_put_be32s(f, &env->sysenter_esp);
+    qemu_put_be32s(f, &env->sysenter_eip);
+    
+    qemu_put_be32s(f, &env->cr[0]);
+    qemu_put_be32s(f, &env->cr[2]);
+    qemu_put_be32s(f, &env->cr[3]);
+    qemu_put_be32s(f, &env->cr[4]);
+    
+    for(i = 0; i < 8; i++)
+        qemu_put_be32s(f, &env->dr[i]);
+
+    /* MMU */
+    qemu_put_be32s(f, &env->a20_mask);
+}
+
+int cpu_load(QEMUFile *f, void *opaque, int version_id)
+{
+    CPUState *env = opaque;
+    int i;
+    uint32_t hflags;
+    uint16_t fpus, fpuc, fptag;
+
+    if (version_id != 2)
+        return -EINVAL;
+    for(i = 0; i < 8; i++)
+        qemu_get_be32s(f, &env->regs[i]);
+    qemu_get_be32s(f, &env->eip);
+    qemu_get_be32s(f, &env->eflags);
+    qemu_get_be32s(f, &env->eflags);
+    qemu_get_be32s(f, &hflags);
+
+    qemu_get_be16s(f, &fpuc);
+    qemu_get_be16s(f, &fpus);
+    qemu_get_be16s(f, &fptag);
+
+    for(i = 0; i < 8; i++) {
+        uint64_t mant;
+        uint16_t exp;
+        mant = qemu_get_be64(f);
+        exp = qemu_get_be16(f);
+        env->fpregs[i] = cpu_set_fp80(mant, exp);
+    }
+
+    env->fpuc = fpuc;
+    env->fpstt = (fpus >> 11) & 7;
+    env->fpus = fpus & ~0x3800;
+    for(i = 0; i < 8; i++) {
+        env->fptags[i] = ((fptag & 3) == 3);
+        fptag >>= 2;
+    }
+    
+    for(i = 0; i < 6; i++)
+        cpu_get_seg(f, &env->segs[i]);
+    cpu_get_seg(f, &env->ldt);
+    cpu_get_seg(f, &env->tr);
+    cpu_get_seg(f, &env->gdt);
+    cpu_get_seg(f, &env->idt);
+    
+    qemu_get_be32s(f, &env->sysenter_cs);
+    qemu_get_be32s(f, &env->sysenter_esp);
+    qemu_get_be32s(f, &env->sysenter_eip);
+    
+    qemu_get_be32s(f, &env->cr[0]);
+    qemu_get_be32s(f, &env->cr[2]);
+    qemu_get_be32s(f, &env->cr[3]);
+    qemu_get_be32s(f, &env->cr[4]);
+    
+    for(i = 0; i < 8; i++)
+        qemu_get_be32s(f, &env->dr[i]);
+
+    /* MMU */
+    qemu_get_be32s(f, &env->a20_mask);
+
+    /* XXX: compute hflags from scratch, except for CPL and IIF */
+    env->hflags = hflags;
+    tlb_flush(env, 1);
+    return 0;
+}
+
+#elif defined(TARGET_PPC)
+void cpu_save(QEMUFile *f, void *opaque)
+{
+}
+
+int cpu_load(QEMUFile *f, void *opaque, int version_id)
+{
+    return 0;
+}
+#elif defined(TARGET_SPARC)
+void cpu_save(QEMUFile *f, void *opaque)
+{
+}
+
+int cpu_load(QEMUFile *f, void *opaque, int version_id)
+{
+    return 0;
+}
+#else
+
+#warning No CPU save/restore functions
+
+#endif
+
+/***********************************************************/
+/* ram save/restore */
+
+/* we just avoid storing empty pages */
+static void ram_put_page(QEMUFile *f, const uint8_t *buf, int len)
+{
+    int i, v;
+
+    v = buf[0];
+    for(i = 1; i < len; i++) {
+        if (buf[i] != v)
+            goto normal_save;
+    }
+    qemu_put_byte(f, 1);
+    qemu_put_byte(f, v);
+    return;
+ normal_save:
+    qemu_put_byte(f, 0); 
+    qemu_put_buffer(f, buf, len);
+}
+
+static int ram_get_page(QEMUFile *f, uint8_t *buf, int len)
+{
+    int v;
+
+    v = qemu_get_byte(f);
+    switch(v) {
+    case 0:
+        if (qemu_get_buffer(f, buf, len) != len)
+            return -EIO;
+        break;
+    case 1:
+        v = qemu_get_byte(f);
+        memset(buf, v, len);
+        break;
+    default:
+        return -EINVAL;
+    }
+    return 0;
+}
+
+static void ram_save(QEMUFile *f, void *opaque)
+{
+    int i;
+    qemu_put_be32(f, phys_ram_size);
+    for(i = 0; i < phys_ram_size; i+= TARGET_PAGE_SIZE) {
+        ram_put_page(f, phys_ram_base + i, TARGET_PAGE_SIZE);
+    }
+}
+
+static int ram_load(QEMUFile *f, void *opaque, int version_id)
+{
+    int i, ret;
+
+    if (version_id != 1)
+        return -EINVAL;
+    if (qemu_get_be32(f) != phys_ram_size)
+        return -EINVAL;
+    for(i = 0; i < phys_ram_size; i+= TARGET_PAGE_SIZE) {
+        ret = ram_get_page(f, phys_ram_base + i, TARGET_PAGE_SIZE);
+        if (ret)
+            return ret;
+    }
     return 0;
 }
 
+/***********************************************************/
 /* main execution loop */
 
-CPUState *cpu_gdbstub_get_env(void *opaque)
+void gui_update(void *opaque)
 {
-    return global_env;
+    display_state.dpy_refresh(&display_state);
+    qemu_mod_timer(gui_timer, GUI_REFRESH_INTERVAL + qemu_get_clock(rt_clock));
 }
 
-int main_loop(void *opaque)
+/* XXX: support several handlers */
+VMStopHandler *vm_stop_cb;
+VMStopHandler *vm_stop_opaque;
+
+int qemu_add_vm_stop_handler(VMStopHandler *cb, void *opaque)
 {
-    struct pollfd ufds[MAX_IO_HANDLERS + 1], *pf, *gdb_ufd;
-    int ret, n, timeout, serial_ok, max_size, i;
-    uint8_t buf[4096];
-    IOHandlerRecord *ioh;
-    CPUState *env = global_env;
+    vm_stop_cb = cb;
+    vm_stop_opaque = opaque;
+    return 0;
+}
 
-    if (!term_inited) {
-        /* initialize terminal only there so that the user has a
-           chance to stop QEMU with Ctrl-C before the gdb connection
-           is launched */
-        term_inited = 1;
-        term_init();
+void qemu_del_vm_stop_handler(VMStopHandler *cb, void *opaque)
+{
+    vm_stop_cb = NULL;
+}
+
+void vm_start(void)
+{
+    if (!vm_running) {
+        cpu_enable_ticks();
+        vm_running = 1;
     }
+}
 
-    serial_ok = 1;
-    cpu_enable_ticks();
-    for(;;) {
-#if defined (DO_TB_FLUSH)
-        tb_flush();
-#endif
-        ret = cpu_exec(env);
-        if (reset_requested) {
-            ret = EXCP_INTERRUPT; 
-            break;
-        }
-        if (ret == EXCP_DEBUG) {
-            ret = EXCP_DEBUG;
-            break;
+void vm_stop(int reason) 
+{
+    if (vm_running) {
+        cpu_disable_ticks();
+        vm_running = 0;
+        if (reason != 0) {
+            if (vm_stop_cb) {
+                vm_stop_cb(vm_stop_opaque, reason);
+            }
         }
-        /* if hlt instruction, we wait until the next IRQ */
-        if (ret == EXCP_HLT) 
-            timeout = 10;
-        else
-            timeout = 0;
+    }
+}
+
+/* reset/shutdown handler */
+
+typedef struct QEMUResetEntry {
+    QEMUResetHandler *func;
+    void *opaque;
+    struct QEMUResetEntry *next;
+} QEMUResetEntry;
+
+static QEMUResetEntry *first_reset_entry;
+static int reset_requested;
+static int shutdown_requested;
+
+void qemu_register_reset(QEMUResetHandler *func, void *opaque)
+{
+    QEMUResetEntry **pre, *re;
+
+    pre = &first_reset_entry;
+    while (*pre != NULL)
+        pre = &(*pre)->next;
+    re = qemu_mallocz(sizeof(QEMUResetEntry));
+    re->func = func;
+    re->opaque = opaque;
+    re->next = NULL;
+    *pre = re;
+}
+
+void qemu_system_reset(void)
+{
+    QEMUResetEntry *re;
+
+    /* reset all devices */
+    for(re = first_reset_entry; re != NULL; re = re->next) {
+        re->func(re->opaque);
+    }
+}
+
+void qemu_system_reset_request(void)
+{
+    reset_requested = 1;
+    cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT);
+}
+
+void qemu_system_shutdown_request(void)
+{
+    shutdown_requested = 1;
+    cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT);
+}
+
+static void main_cpu_reset(void *opaque)
+{
+#ifdef TARGET_I386
+    CPUState *env = opaque;
+    cpu_reset(env);
+#endif
+}
+
+void main_loop_wait(int timeout)
+{
+#ifndef _WIN32
+    struct pollfd ufds[MAX_IO_HANDLERS + 1], *pf;
+    IOHandlerRecord *ioh, *ioh_next;
+    uint8_t buf[4096];
+    int n, max_size;
+#endif
+    int ret;
 
+#ifdef _WIN32
+        if (timeout > 0)
+            Sleep(timeout);
+#else
         /* poll any events */
+        /* XXX: separate device handlers from system ones */
         pf = ufds;
-        ioh = io_handlers;
-        for(i = 0; i < nb_io_handlers; i++) {
-            max_size = ioh->fd_can_read(ioh->opaque);
-            if (max_size > 0) {
-                if (max_size > sizeof(buf))
-                    max_size = sizeof(buf);
+        for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
+            if (!ioh->fd_can_read) {
+                max_size = 0;
                 pf->fd = ioh->fd;
                 pf->events = POLLIN;
                 ioh->ufd = pf;
                 pf++;
             } else {
-                ioh->ufd = NULL;
+                max_size = ioh->fd_can_read(ioh->opaque);
+                if (max_size > 0) {
+                    if (max_size > sizeof(buf))
+                        max_size = sizeof(buf);
+                    pf->fd = ioh->fd;
+                    pf->events = POLLIN;
+                    ioh->ufd = pf;
+                    pf++;
+                } else {
+                    ioh->ufd = NULL;
+                }
             }
             ioh->max_size = max_size;
-            ioh++;
-        }
-
-        gdb_ufd = NULL;
-        if (gdbstub_fd > 0) {
-            gdb_ufd = pf;
-            pf->fd = gdbstub_fd;
-            pf->events = POLLIN;
-            pf++;
         }
-
+        
         ret = poll(ufds, pf - ufds, timeout);
         if (ret > 0) {
-            ioh = io_handlers;
-            for(i = 0; i < nb_io_handlers; i++) {
+            /* XXX: better handling of removal */
+            for(ioh = first_io_handler; ioh != NULL; ioh = ioh_next) {
+                ioh_next = ioh->next;
                 pf = ioh->ufd;
                 if (pf) {
-                    n = read(ioh->fd, buf, ioh->max_size);
-                    if (n > 0) {
-                        ioh->fd_read(ioh->opaque, buf, n);
+                    if (pf->revents & POLLIN) {
+                        if (ioh->max_size == 0) {
+                            /* just a read event */
+                            ioh->fd_read(ioh->opaque, NULL, 0);
+                        } else {
+                            n = read(ioh->fd, buf, ioh->max_size);
+                            if (n >= 0) {
+                                ioh->fd_read(ioh->opaque, buf, n);
+                            } else if (errno != EAGAIN) {
+                                ioh->fd_read(ioh->opaque, NULL, -errno);
+                            }
+                        }
                     }
                 }
-                ioh++;
             }
-            if (gdb_ufd && (gdb_ufd->revents & POLLIN)) {
-                uint8_t buf[1];
-                /* stop emulation if requested by gdb */
-                n = read(gdbstub_fd, buf, 1);
-                if (n == 1) {
-                    ret = EXCP_INTERRUPT; 
-                    break;
-                }
+        }
+#endif /* !defined(_WIN32) */
+#if defined(CONFIG_SLIRP)
+        /* XXX: merge with poll() */
+        if (slirp_inited) {
+            fd_set rfds, wfds, xfds;
+            int nfds;
+            struct timeval tv;
+
+            nfds = -1;
+            FD_ZERO(&rfds);
+            FD_ZERO(&wfds);
+            FD_ZERO(&xfds);
+            slirp_select_fill(&nfds, &rfds, &wfds, &xfds);
+            tv.tv_sec = 0;
+            tv.tv_usec = 0;
+            ret = select(nfds + 1, &rfds, &wfds, &xfds, &tv);
+            if (ret >= 0) {
+                slirp_select_poll(&rfds, &wfds, &xfds);
             }
         }
-
-        /* timer IRQ */
-        if (timer_irq_pending) {
-#if defined (TARGET_I386)
-            pic_set_irq(0, 1);
-            pic_set_irq(0, 0);
-            timer_irq_pending = 0;
-            rtc_timer();
 #endif
+
+        if (vm_running) {
+            qemu_run_timers(&active_timers[QEMU_TIMER_VIRTUAL], 
+                            qemu_get_clock(vm_clock));
+            /* run dma transfers, if any */
+            DMA_run();
         }
-        /* XXX: add explicit timer */
-        SB16_run();
 
-        /* run dma transfers, if any */
-        DMA_run();
+        /* real time timers */
+        qemu_run_timers(&active_timers[QEMU_TIMER_REALTIME], 
+                        qemu_get_clock(rt_clock));
+}
+
+int main_loop(void)
+{
+    int ret, timeout;
+    CPUState *env = global_env;
 
-        /* VGA */
-        if (gui_refresh_pending) {
-            display_state.dpy_refresh(&display_state);
-            gui_refresh_pending = 0;
+    for(;;) {
+        if (vm_running) {
+            ret = cpu_exec(env);
+            if (shutdown_requested) {
+                ret = EXCP_INTERRUPT; 
+                break;
+            }
+            if (reset_requested) {
+                reset_requested = 0;
+                qemu_system_reset();
+                ret = EXCP_INTERRUPT; 
+            }
+            if (ret == EXCP_DEBUG) {
+                vm_stop(EXCP_DEBUG);
+            }
+            /* if hlt instruction, we wait until the next IRQ */
+            /* XXX: use timeout computed from timers */
+            if (ret == EXCP_HLT) 
+                timeout = 10;
+            else
+                timeout = 0;
+        } else {
+            timeout = 10;
         }
+        main_loop_wait(timeout);
     }
     cpu_disable_ticks();
     return ret;
@@ -773,7 +2484,7 @@ int main_loop(void *opaque)
 
 void help(void)
 {
-    printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
+    printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003-2004 Fabrice Bellard\n"
            "usage: %s [options] [disk_image]\n"
            "\n"
            "'disk_image' is a raw hard image image for IDE hard disk 0\n"
@@ -785,13 +2496,31 @@ void help(void)
            "-cdrom file     use 'file' as IDE cdrom image (cdrom is ide1 master)\n"
            "-boot [a|b|c|d] boot on floppy (a, b), hard disk (c) or CD-ROM (d)\n"
           "-snapshot       write to temporary files instead of disk image files\n"
-           "-m megs         set virtual RAM size to megs MB\n"
+           "-m megs         set virtual RAM size to megs MB [default=%d]\n"
            "-nographic      disable graphical output and redirect serial I/Os to console\n"
+           "-enable-audio   enable audio support\n"
+           "-localtime      set the real time clock to local time [default=utc]\n"
+           "-full-screen    start in full screen\n"
+#ifdef TARGET_PPC
+           "-prep           Simulate a PREP system (default is PowerMAC)\n"
+           "-g WxH[xDEPTH]  Set the initial VGA graphic mode\n"
+#endif
            "\n"
            "Network options:\n"
-           "-n script       set network init script [default=%s]\n"
-           "-nics n         simulate 'n' network interfaces [default=1]\n"
-           "-tun-fd fd0[,...] use these fds as already opened tap/tun interfaces\n"
+           "-nics n         simulate 'n' network cards [default=1]\n"
+           "-macaddr addr   set the mac address of the first interface\n"
+           "-n script       set tap/tun network init script [default=%s]\n"
+           "-tun-fd fd      use this fd as already opened tap/tun interface\n"
+#ifdef CONFIG_SLIRP
+           "-user-net       use user mode network stack [default if no tap/tun script]\n"
+           "-tftp prefix    allow tftp access to files starting with prefix [-user-net]\n"
+#ifndef _WIN32
+           "-smb dir        allow SMB access to files in 'dir' [-user-net]\n"
+#endif
+           "-redir [tcp|udp]:host-port:[guest-host]:guest-port\n"
+           "                redirect TCP or UDP connections from host to guest [-user-net]\n"
+#endif
+           "-dummy-net      use dummy network stack\n"
            "\n"
            "Linux boot specific:\n"
            "-kernel bzImage use 'bzImage' as kernel image\n"
@@ -799,26 +2528,40 @@ void help(void)
            "-initrd file    use 'file' as initial ram disk\n"
            "\n"
            "Debug/Expert options:\n"
+           "-monitor dev    redirect the monitor to char device 'dev'\n"
+           "-serial dev     redirect the serial port to char device 'dev'\n"
+           "-S              freeze CPU at startup (use 'c' to start execution)\n"
            "-s              wait gdb connection to port %d\n"
            "-p port         change gdb connection port\n"
-           "-d              output log to %s\n"
+           "-d item1,...    output log to %s (use -d ? for a list of log items)\n"
            "-hdachs c,h,s   force hard disk 0 geometry (usually qemu can guess it)\n"
            "-L path         set the directory for the BIOS and VGA BIOS\n"
 #ifdef USE_CODE_COPY
            "-no-code-copy   disable code copy acceleration\n"
 #endif
-
+#ifdef TARGET_I386
+           "-isa            simulate an ISA-only system (default is PCI system)\n"
+           "-std-vga        simulate a standard VGA card with VESA Bochs Extensions\n"
+           "                (default is CL-GD5446 PCI VGA)\n"
+#endif
+           "-loadvm file    start right away with a saved state (loadvm in monitor)\n"
+           "\n"
+           "During emulation, the following keys are useful:\n"
+           "ctrl-alt-f      toggle full screen\n"
+           "ctrl-alt-n      switch to virtual console 'n'\n"
+           "ctrl-alt        toggle mouse and keyboard grab\n"
            "\n"
-           "During emulation, use C-a h to get terminal commands:\n",
+           "When using -nographic, press 'ctrl-a h' to get some help.\n"
+           ,
 #ifdef CONFIG_SOFTMMU
            "qemu",
 #else
            "qemu-fast",
 #endif
-           DEFAULT_NETWORK_SCRIPT, 
+           DEFAULT_RAM_SIZE,
+           DEFAULT_NETWORK_SCRIPT,
            DEFAULT_GDBSTUB_PORT,
            "/tmp/qemu.log");
-    term_print_help();
 #ifndef CONFIG_SOFTMMU
     printf("\n"
            "NOTE: this version of QEMU is faster but it needs slightly patched OSes to\n"
@@ -828,38 +2571,122 @@ void help(void)
     exit(1);
 }
 
-struct option long_options[] = {
-    { "initrd", 1, NULL, 0, },
-    { "hda", 1, NULL, 0, },
-    { "hdb", 1, NULL, 0, },
-    { "snapshot", 0, NULL, 0, },
-    { "hdachs", 1, NULL, 0, },
-    { "nographic", 0, NULL, 0, },
-    { "kernel", 1, NULL, 0, },
-    { "append", 1, NULL, 0, },
-    { "tun-fd", 1, NULL, 0, },
-    { "hdc", 1, NULL, 0, },
-    { "hdd", 1, NULL, 0, },
-    { "cdrom", 1, NULL, 0, },
-    { "boot", 1, NULL, 0, },
-    { "fda", 1, NULL, 0, },
-    { "fdb", 1, NULL, 0, },
-    { "no-code-copy", 0, NULL, 0 },
-    { "nics", 1, NULL, 0 },
-    { NULL, 0, NULL, 0 },
+#define HAS_ARG 0x0001
+
+enum {
+    QEMU_OPTION_h,
+
+    QEMU_OPTION_fda,
+    QEMU_OPTION_fdb,
+    QEMU_OPTION_hda,
+    QEMU_OPTION_hdb,
+    QEMU_OPTION_hdc,
+    QEMU_OPTION_hdd,
+    QEMU_OPTION_cdrom,
+    QEMU_OPTION_boot,
+    QEMU_OPTION_snapshot,
+    QEMU_OPTION_m,
+    QEMU_OPTION_nographic,
+    QEMU_OPTION_enable_audio,
+
+    QEMU_OPTION_nics,
+    QEMU_OPTION_macaddr,
+    QEMU_OPTION_n,
+    QEMU_OPTION_tun_fd,
+    QEMU_OPTION_user_net,
+    QEMU_OPTION_tftp,
+    QEMU_OPTION_smb,
+    QEMU_OPTION_redir,
+    QEMU_OPTION_dummy_net,
+
+    QEMU_OPTION_kernel,
+    QEMU_OPTION_append,
+    QEMU_OPTION_initrd,
+
+    QEMU_OPTION_S,
+    QEMU_OPTION_s,
+    QEMU_OPTION_p,
+    QEMU_OPTION_d,
+    QEMU_OPTION_hdachs,
+    QEMU_OPTION_L,
+    QEMU_OPTION_no_code_copy,
+    QEMU_OPTION_pci,
+    QEMU_OPTION_isa,
+    QEMU_OPTION_prep,
+    QEMU_OPTION_localtime,
+    QEMU_OPTION_cirrusvga,
+    QEMU_OPTION_g,
+    QEMU_OPTION_std_vga,
+    QEMU_OPTION_monitor,
+    QEMU_OPTION_serial,
+    QEMU_OPTION_loadvm,
+    QEMU_OPTION_full_screen,
 };
 
-#ifdef CONFIG_SDL
-/* SDL use the pthreads and they modify sigaction. We don't
-   want that. */
-#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
-extern void __libc_sigaction();
-#define sigaction(sig, act, oact) __libc_sigaction(sig, act, oact)
-#else
-extern void __sigaction();
-#define sigaction(sig, act, oact) __sigaction(sig, act, oact)
+typedef struct QEMUOption {
+    const char *name;
+    int flags;
+    int index;
+} QEMUOption;
+
+const QEMUOption qemu_options[] = {
+    { "h", 0, QEMU_OPTION_h },
+
+    { "fda", HAS_ARG, QEMU_OPTION_fda },
+    { "fdb", HAS_ARG, QEMU_OPTION_fdb },
+    { "hda", HAS_ARG, QEMU_OPTION_hda },
+    { "hdb", HAS_ARG, QEMU_OPTION_hdb },
+    { "hdc", HAS_ARG, QEMU_OPTION_hdc },
+    { "hdd", HAS_ARG, QEMU_OPTION_hdd },
+    { "cdrom", HAS_ARG, QEMU_OPTION_cdrom },
+    { "boot", HAS_ARG, QEMU_OPTION_boot },
+    { "snapshot", 0, QEMU_OPTION_snapshot },
+    { "m", HAS_ARG, QEMU_OPTION_m },
+    { "nographic", 0, QEMU_OPTION_nographic },
+    { "enable-audio", 0, QEMU_OPTION_enable_audio },
+
+    { "nics", HAS_ARG, QEMU_OPTION_nics},
+    { "macaddr", HAS_ARG, QEMU_OPTION_macaddr},
+    { "n", HAS_ARG, QEMU_OPTION_n },
+    { "tun-fd", HAS_ARG, QEMU_OPTION_tun_fd },
+#ifdef CONFIG_SLIRP
+    { "user-net", 0, QEMU_OPTION_user_net },
+    { "tftp", HAS_ARG, QEMU_OPTION_tftp },
+#ifndef _WIN32
+    { "smb", HAS_ARG, QEMU_OPTION_smb },
 #endif
-#endif /* CONFIG_SDL */
+    { "redir", HAS_ARG, QEMU_OPTION_redir },
+#endif
+    { "dummy-net", 0, QEMU_OPTION_dummy_net },
+
+    { "kernel", HAS_ARG, QEMU_OPTION_kernel },
+    { "append", HAS_ARG, QEMU_OPTION_append },
+    { "initrd", HAS_ARG, QEMU_OPTION_initrd },
+
+    { "S", 0, QEMU_OPTION_S },
+    { "s", 0, QEMU_OPTION_s },
+    { "p", HAS_ARG, QEMU_OPTION_p },
+    { "d", HAS_ARG, QEMU_OPTION_d },
+    { "hdachs", HAS_ARG, QEMU_OPTION_hdachs },
+    { "L", HAS_ARG, QEMU_OPTION_L },
+    { "no-code-copy", 0, QEMU_OPTION_no_code_copy },
+#ifdef TARGET_PPC
+    { "prep", 0, QEMU_OPTION_prep },
+    { "g", 1, QEMU_OPTION_g },
+#endif
+    { "localtime", 0, QEMU_OPTION_localtime },
+    { "isa", 0, QEMU_OPTION_isa },
+    { "std-vga", 0, QEMU_OPTION_std_vga },
+    { "monitor", 1, QEMU_OPTION_monitor },
+    { "serial", 1, QEMU_OPTION_serial },
+    { "loadvm", HAS_ARG, QEMU_OPTION_loadvm },
+    { "full-screen", 0, QEMU_OPTION_full_screen },
+    
+    /* temporary options */
+    { "pci", 0, QEMU_OPTION_pci },
+    { "cirrusvga", 0, QEMU_OPTION_cirrusvga },
+    { NULL },
+};
 
 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
 
@@ -870,71 +2697,159 @@ static uint8_t *signal_stack;
 
 #endif
 
+/* password input */
+
+static BlockDriverState *get_bdrv(int index)
+{
+    BlockDriverState *bs;
+
+    if (index < 4) {
+        bs = bs_table[index];
+    } else if (index < 6) {
+        bs = fd_table[index - 4];
+    } else {
+        bs = NULL;
+    }
+    return bs;
+}
+
+static void read_passwords(void)
+{
+    BlockDriverState *bs;
+    int i, j;
+    char password[256];
+
+    for(i = 0; i < 6; i++) {
+        bs = get_bdrv(i);
+        if (bs && bdrv_is_encrypted(bs)) {
+            term_printf("%s is encrypted.\n", bdrv_get_device_name(bs));
+            for(j = 0; j < 3; j++) {
+                monitor_readline("Password: ", 
+                                 1, password, sizeof(password));
+                if (bdrv_set_key(bs, password) == 0)
+                    break;
+                term_printf("invalid password\n");
+            }
+        }
+    }
+}
+
+#define NET_IF_TUN   0
+#define NET_IF_USER  1
+#define NET_IF_DUMMY 2
+
 int main(int argc, char **argv)
 {
-    int c, i, use_gdbstub, gdbstub_port, long_index, has_cdrom;
+#ifdef CONFIG_GDBSTUB
+    int use_gdbstub, gdbstub_port;
+#endif
+    int i, has_cdrom;
     int snapshot, linux_boot;
-    struct sigaction act;
-    struct itimerval itv;
     CPUState *env;
     const char *initrd_filename;
     const char *hd_filename[MAX_DISKS], *fd_filename[MAX_FD];
     const char *kernel_filename, *kernel_cmdline;
     DisplayState *ds = &display_state;
     int cyls, heads, secs;
-
+    int start_emulation = 1;
+    uint8_t macaddr[6];
+    int net_if_type, nb_tun_fds, tun_fds[MAX_NICS];
+    int optind;
+    const char *r, *optarg;
+    CharDriverState *monitor_hd;
+    char monitor_device[128];
+    char serial_devices[MAX_SERIAL_PORTS][128];
+    int serial_device_index;
+    const char *loadvm = NULL;
+    
+#if !defined(CONFIG_SOFTMMU)
     /* we never want that malloc() uses mmap() */
     mallopt(M_MMAP_THRESHOLD, 4096 * 1024);
+#endif
     initrd_filename = NULL;
     for(i = 0; i < MAX_FD; i++)
         fd_filename[i] = NULL;
     for(i = 0; i < MAX_DISKS; i++)
         hd_filename[i] = NULL;
-    ram_size = 32 * 1024 * 1024;
+    ram_size = DEFAULT_RAM_SIZE * 1024 * 1024;
     vga_ram_size = VGA_RAM_SIZE;
+    bios_size = BIOS_SIZE;
     pstrcpy(network_script, sizeof(network_script), DEFAULT_NETWORK_SCRIPT);
+#ifdef CONFIG_GDBSTUB
     use_gdbstub = 0;
     gdbstub_port = DEFAULT_GDBSTUB_PORT;
+#endif
     snapshot = 0;
     nographic = 0;
     kernel_filename = NULL;
     kernel_cmdline = "";
     has_cdrom = 1;
     cyls = heads = secs = 0;
+    pstrcpy(monitor_device, sizeof(monitor_device), "vc");
 
+    pstrcpy(serial_devices[0], sizeof(serial_devices[0]), "vc");
+    for(i = 1; i < MAX_SERIAL_PORTS; i++)
+        serial_devices[i][0] = '\0';
+    serial_device_index = 0;
+    
+    nb_tun_fds = 0;
+    net_if_type = -1;
     nb_nics = 1;
-    for(i = 0; i < MAX_NICS; i++) {
-        NetDriverState *nd = &nd_table[i];
-        nd->fd = -1;
-        /* init virtual mac address */
-        nd->macaddr[0] = 0x52;
-        nd->macaddr[1] = 0x54;
-        nd->macaddr[2] = 0x00;
-        nd->macaddr[3] = 0x12;
-        nd->macaddr[4] = 0x34;
-        nd->macaddr[5] = 0x56 + i;
-    }
+    /* default mac address of the first network interface */
+    macaddr[0] = 0x52;
+    macaddr[1] = 0x54;
+    macaddr[2] = 0x00;
+    macaddr[3] = 0x12;
+    macaddr[4] = 0x34;
+    macaddr[5] = 0x56;
     
+    optind = 1;
     for(;;) {
-        c = getopt_long_only(argc, argv, "hm:dn:sp:L:", long_options, &long_index);
-        if (c == -1)
+        if (optind >= argc)
             break;
-        switch(c) {
-        case 0:
-            switch(long_index) {
-            case 0:
+        r = argv[optind];
+        if (r[0] != '-') {
+            hd_filename[0] = argv[optind++];
+        } else {
+            const QEMUOption *popt;
+
+            optind++;
+            popt = qemu_options;
+            for(;;) {
+                if (!popt->name) {
+                    fprintf(stderr, "%s: invalid option -- '%s'\n", 
+                            argv[0], r);
+                    exit(1);
+                }
+                if (!strcmp(popt->name, r + 1))
+                    break;
+                popt++;
+            }
+            if (popt->flags & HAS_ARG) {
+                if (optind >= argc) {
+                    fprintf(stderr, "%s: option '%s' requires an argument\n",
+                            argv[0], r);
+                    exit(1);
+                }
+                optarg = argv[optind++];
+            } else {
+                optarg = NULL;
+            }
+
+            switch(popt->index) {
+            case QEMU_OPTION_initrd:
                 initrd_filename = optarg;
                 break;
-            case 1:
+            case QEMU_OPTION_hda:
                 hd_filename[0] = optarg;
                 break;
-            case 2:
+            case QEMU_OPTION_hdb:
                 hd_filename[1] = optarg;
                 break;
-            case 3:
+            case QEMU_OPTION_snapshot:
                 snapshot = 1;
                 break;
-            case 4:
+            case QEMU_OPTION_hdachs:
                 {
                     const char *p;
                     p = optarg;
@@ -953,49 +2868,44 @@ int main(int argc, char **argv)
                     }
                 }
                 break;
-            case 5:
+            case QEMU_OPTION_nographic:
+                pstrcpy(monitor_device, sizeof(monitor_device), "stdio");
+                pstrcpy(serial_devices[0], sizeof(serial_devices[0]), "stdio");
                 nographic = 1;
                 break;
-            case 6:
+            case QEMU_OPTION_kernel:
                 kernel_filename = optarg;
                 break;
-            case 7:
+            case QEMU_OPTION_append:
                 kernel_cmdline = optarg;
                 break;
-           case 8:
+           case QEMU_OPTION_tun_fd:
                 {
                     const char *p;
                     int fd;
-                    p = optarg;
-                    nb_nics = 0;
-                    for(;;) {
-                        fd = strtol(p, (char **)&p, 0);
-                        nd_table[nb_nics].fd = fd;
-                        snprintf(nd_table[nb_nics].ifname, 
-                                 sizeof(nd_table[nb_nics].ifname),
-                                 "fd%d", nb_nics);
-                        nb_nics++;
-                        if (*p == ',') {
-                            p++;
-                        } else if (*p != '\0') {
-                            fprintf(stderr, "qemu: invalid fd for network interface %d\n", nb_nics);
+                    net_if_type = NET_IF_TUN;
+                    if (nb_tun_fds < MAX_NICS) {
+                        fd = strtol(optarg, (char **)&p, 0);
+                        if (*p != '\0') {
+                            fprintf(stderr, "qemu: invalid fd for network interface %d\n", nb_tun_fds);
                             exit(1);
                         }
+                        tun_fds[nb_tun_fds++] = fd;
                     }
                 }
                break;
-            case 9:
+            case QEMU_OPTION_hdc:
                 hd_filename[2] = optarg;
                 has_cdrom = 0;
                 break;
-            case 10:
+            case QEMU_OPTION_hdd:
                 hd_filename[3] = optarg;
                 break;
-            case 11:
+            case QEMU_OPTION_cdrom:
                 hd_filename[2] = optarg;
                 has_cdrom = 1;
                 break;
-            case 12:
+            case QEMU_OPTION_boot:
                 boot_device = optarg[0];
                 if (boot_device != 'a' && boot_device != 'b' &&
                     boot_device != 'c' && boot_device != 'd') {
@@ -1003,59 +2913,185 @@ int main(int argc, char **argv)
                     exit(1);
                 }
                 break;
-            case 13:
+            case QEMU_OPTION_fda:
                 fd_filename[0] = optarg;
                 break;
-            case 14:
+            case QEMU_OPTION_fdb:
                 fd_filename[1] = optarg;
                 break;
-            case 15:
+            case QEMU_OPTION_no_code_copy:
                 code_copy_enabled = 0;
                 break;
-            case 16:
+            case QEMU_OPTION_nics:
                 nb_nics = atoi(optarg);
-                if (nb_nics < 1 || nb_nics > MAX_NICS) {
+                if (nb_nics < 0 || nb_nics > MAX_NICS) {
                     fprintf(stderr, "qemu: invalid number of network interfaces\n");
                     exit(1);
                 }
                 break;
-            }
-            break;
-        case 'h':
-            help();
-            break;
-        case 'm':
-            ram_size = atoi(optarg) * 1024 * 1024;
-            if (ram_size <= 0)
+            case QEMU_OPTION_macaddr:
+                {
+                    const char *p;
+                    int i;
+                    p = optarg;
+                    for(i = 0; i < 6; i++) {
+                        macaddr[i] = strtol(p, (char **)&p, 16);
+                        if (i == 5) {
+                            if (*p != '\0') 
+                                goto macaddr_error;
+                        } else {
+                            if (*p != ':') {
+                            macaddr_error:
+                                fprintf(stderr, "qemu: invalid syntax for ethernet address\n");
+                                exit(1);
+                            }
+                            p++;
+                        }
+                    }
+                }
+                break;
+#ifdef CONFIG_SLIRP
+            case QEMU_OPTION_tftp:
+               tftp_prefix = optarg;
+                break;
+#ifndef _WIN32
+            case QEMU_OPTION_smb:
+               net_slirp_smb(optarg);
+                break;
+#endif
+            case QEMU_OPTION_user_net:
+                net_if_type = NET_IF_USER;
+                break;
+            case QEMU_OPTION_redir:
+                net_slirp_redir(optarg);                
+                break;
+#endif
+            case QEMU_OPTION_dummy_net:
+                net_if_type = NET_IF_DUMMY;
+                break;
+            case QEMU_OPTION_enable_audio:
+                audio_enabled = 1;
+                break;
+            case QEMU_OPTION_h:
                 help();
-            if (ram_size > PHYS_RAM_MAX_SIZE) {
-                fprintf(stderr, "qemu: at most %d MB RAM can be simulated\n",
-                        PHYS_RAM_MAX_SIZE / (1024 * 1024));
-                exit(1);
+                break;
+            case QEMU_OPTION_m:
+                ram_size = atoi(optarg) * 1024 * 1024;
+                if (ram_size <= 0)
+                    help();
+                if (ram_size > PHYS_RAM_MAX_SIZE) {
+                    fprintf(stderr, "qemu: at most %d MB RAM can be simulated\n",
+                            PHYS_RAM_MAX_SIZE / (1024 * 1024));
+                    exit(1);
+                }
+                break;
+            case QEMU_OPTION_d:
+                {
+                    int mask;
+                    CPULogItem *item;
+                    
+                    mask = cpu_str_to_log_mask(optarg);
+                    if (!mask) {
+                        printf("Log items (comma separated):\n");
+                    for(item = cpu_log_items; item->mask != 0; item++) {
+                        printf("%-10s %s\n", item->name, item->help);
+                    }
+                    exit(1);
+                    }
+                    cpu_set_log(mask);
+                }
+                break;
+            case QEMU_OPTION_n:
+                pstrcpy(network_script, sizeof(network_script), optarg);
+                break;
+#ifdef CONFIG_GDBSTUB
+            case QEMU_OPTION_s:
+                use_gdbstub = 1;
+                break;
+            case QEMU_OPTION_p:
+                gdbstub_port = atoi(optarg);
+                break;
+#endif
+            case QEMU_OPTION_L:
+                bios_dir = optarg;
+                break;
+            case QEMU_OPTION_S:
+                start_emulation = 0;
+                break;
+            case QEMU_OPTION_pci:
+                pci_enabled = 1;
+                break;
+            case QEMU_OPTION_isa:
+                pci_enabled = 0;
+                break;
+            case QEMU_OPTION_prep:
+                prep_enabled = 1;
+                break;
+            case QEMU_OPTION_localtime:
+                rtc_utc = 0;
+                break;
+            case QEMU_OPTION_cirrusvga:
+                cirrus_vga_enabled = 1;
+                break;
+            case QEMU_OPTION_std_vga:
+                cirrus_vga_enabled = 0;
+                break;
+            case QEMU_OPTION_g:
+                {
+                    const char *p;
+                    int w, h, depth;
+                    p = optarg;
+                    w = strtol(p, (char **)&p, 10);
+                    if (w <= 0) {
+                    graphic_error:
+                        fprintf(stderr, "qemu: invalid resolution or depth\n");
+                        exit(1);
+                    }
+                    if (*p != 'x')
+                        goto graphic_error;
+                    p++;
+                    h = strtol(p, (char **)&p, 10);
+                    if (h <= 0)
+                        goto graphic_error;
+                    if (*p == 'x') {
+                        p++;
+                        depth = strtol(p, (char **)&p, 10);
+                        if (depth != 8 && depth != 15 && depth != 16 && 
+                            depth != 24 && depth != 32)
+                            goto graphic_error;
+                    } else if (*p == '\0') {
+                        depth = graphic_depth;
+                    } else {
+                        goto graphic_error;
+                    }
+                    
+                    graphic_width = w;
+                    graphic_height = h;
+                    graphic_depth = depth;
+                }
+                break;
+            case QEMU_OPTION_monitor:
+                pstrcpy(monitor_device, sizeof(monitor_device), optarg);
+                break;
+            case QEMU_OPTION_serial:
+                if (serial_device_index >= MAX_SERIAL_PORTS) {
+                    fprintf(stderr, "qemu: too many serial ports\n");
+                    exit(1);
+                }
+                pstrcpy(serial_devices[serial_device_index], 
+                        sizeof(serial_devices[0]), optarg);
+                serial_device_index++;
+                break;
+           case QEMU_OPTION_loadvm:
+               loadvm = optarg;
+               break;
+            case QEMU_OPTION_full_screen:
+                full_screen = 1;
+                break;
             }
-            break;
-        case 'd':
-            cpu_set_log(CPU_LOG_ALL);
-            break;
-        case 'n':
-            pstrcpy(network_script, sizeof(network_script), optarg);
-            break;
-        case 's':
-            use_gdbstub = 1;
-            break;
-        case 'p':
-            gdbstub_port = atoi(optarg);
-            break;
-        case 'L':
-            bios_dir = optarg;
-            break;
         }
     }
 
-    if (optind < argc) {
-        hd_filename[0] = argv[optind++];
-    }
-
     linux_boot = (kernel_filename != NULL);
         
     if (!linux_boot && hd_filename[0] == '\0' && hd_filename[2] == '\0' &&
@@ -1081,13 +3117,58 @@ int main(int argc, char **argv)
 #endif
 
     /* init host network redirectors */
-    net_init();
+    if (net_if_type == -1) {
+        net_if_type = NET_IF_TUN;
+#if defined(CONFIG_SLIRP)
+        if (access(network_script, R_OK) < 0) {
+            net_if_type = NET_IF_USER;
+        }
+#endif
+    }
+
+    for(i = 0; i < nb_nics; i++) {
+        NetDriverState *nd = &nd_table[i];
+        nd->index = i;
+        /* init virtual mac address */
+        nd->macaddr[0] = macaddr[0];
+        nd->macaddr[1] = macaddr[1];
+        nd->macaddr[2] = macaddr[2];
+        nd->macaddr[3] = macaddr[3];
+        nd->macaddr[4] = macaddr[4];
+        nd->macaddr[5] = macaddr[5] + i;
+        switch(net_if_type) {
+#if defined(CONFIG_SLIRP)
+        case NET_IF_USER:
+            net_slirp_init(nd);
+            break;
+#endif
+#if !defined(_WIN32)
+        case NET_IF_TUN:
+            if (i < nb_tun_fds) {
+                net_fd_init(nd, tun_fds[i]);
+            } else {
+                if (net_tun_init(nd) < 0)
+                    net_dummy_init(nd);
+            }
+            break;
+#endif
+        case NET_IF_DUMMY:
+        default:
+            net_dummy_init(nd);
+            break;
+        }
+    }
 
     /* init the memory */
-    phys_ram_size = ram_size + vga_ram_size;
+    phys_ram_size = ram_size + vga_ram_size + bios_size;
 
 #ifdef CONFIG_SOFTMMU
+#ifdef _BSD
+    /* mallocs are always aligned on BSD. valloc is better for correctness */
+    phys_ram_base = valloc(phys_ram_size);
+#else
     phys_ram_base = memalign(TARGET_PAGE_SIZE, phys_ram_size);
+#endif
     if (!phys_ram_base) {
         fprintf(stderr, "Could not allocate physical memory\n");
         exit(1);
@@ -1127,6 +3208,7 @@ int main(int argc, char **argv)
 #endif
 
     /* we always create the cdrom drive, even if no disk is there */
+    bdrv_init();
     if (has_cdrom) {
         bs_table[2] = bdrv_new("cdrom");
         bdrv_set_type_hint(bs_table[2], BDRV_TYPE_CDROM);
@@ -1141,7 +3223,7 @@ int main(int argc, char **argv)
                 bs_table[i] = bdrv_new(buf);
             }
             if (bdrv_open(bs_table[i], hd_filename[i], snapshot) < 0) {
-                fprintf(stderr, "qemu: could not open hard disk image '%s\n",
+                fprintf(stderr, "qemu: could not open hard disk image '%s'\n",
                         hd_filename[i]);
                 exit(1);
             }
@@ -1164,7 +3246,7 @@ int main(int argc, char **argv)
             }
             if (fd_filename[i] != '\0') {
                 if (bdrv_open(fd_table[i], fd_filename[i], snapshot) < 0) {
-                    fprintf(stderr, "qemu: could not open floppy disk image '%s\n",
+                    fprintf(stderr, "qemu: could not open floppy disk image '%s'\n",
                             fd_filename[i]);
                     exit(1);
                 }
@@ -1177,6 +3259,11 @@ int main(int argc, char **argv)
     global_env = env;
     cpu_single_env = env;
 
+    register_savevm("timer", 0, 1, timer_save, timer_load, env);
+    register_savevm("cpu", 0, 2, cpu_save, cpu_load, env);
+    register_savevm("ram", 0, 1, ram_save, ram_load, NULL);
+    qemu_register_reset(main_cpu_reset, global_env);
+
     init_ioports();
     cpu_calibrate_ticks();
 
@@ -1185,31 +3272,41 @@ int main(int argc, char **argv)
         dumb_display_init(ds);
     } else {
 #ifdef CONFIG_SDL
-        sdl_display_init(ds);
+        sdl_display_init(ds, full_screen);
 #else
         dumb_display_init(ds);
 #endif
     }
 
-#if defined(TARGET_I386)
-    pc_init(ram_size, vga_ram_size, boot_device,
-            ds, fd_filename, snapshot,
-            kernel_filename, kernel_cmdline, initrd_filename);
-#elif defined(TARGET_PPC)
-    ppc_init();
-#endif
-
-    /* launched after the device init so that it can display or not a
-       banner */
-    monitor_init();
+    vga_console = graphic_console_init(ds);
+    
+    monitor_hd = qemu_chr_open(monitor_device);
+    if (!monitor_hd) {
+        fprintf(stderr, "qemu: could not open monitor device '%s'\n", monitor_device);
+        exit(1);
+    }
+    monitor_init(monitor_hd, !nographic);
+
+    for(i = 0; i < MAX_SERIAL_PORTS; i++) {
+        if (serial_devices[i][0] != '\0') {
+            serial_hds[i] = qemu_chr_open(serial_devices[i]);
+            if (!serial_hds[i]) {
+                fprintf(stderr, "qemu: could not open serial device '%s'\n", 
+                        serial_devices[i]);
+                exit(1);
+            }
+            if (!strcmp(serial_devices[i], "vc"))
+                qemu_chr_printf(serial_hds[i], "serial%d console\n", i);
+        }
+    }
 
     /* setup cpu signal handlers for MMU / self modifying code handling */
 #if !defined(CONFIG_SOFTMMU)
-
+    
 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
     {
         stack_t stk;
-        signal_stack = malloc(SIGNAL_STACK_SIZE);
+        signal_stack = memalign(16, SIGNAL_STACK_SIZE);
         stk.ss_sp = signal_stack;
         stk.ss_size = SIGNAL_STACK_SIZE;
         stk.ss_flags = 0;
@@ -1220,45 +3317,73 @@ int main(int argc, char **argv)
         }
     }
 #endif
+    {
+        struct sigaction act;
         
-    sigfillset(&act.sa_mask);
-    act.sa_flags = SA_SIGINFO;
+        sigfillset(&act.sa_mask);
+        act.sa_flags = SA_SIGINFO;
 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
-    act.sa_flags |= SA_ONSTACK;
+        act.sa_flags |= SA_ONSTACK;
 #endif
-    act.sa_sigaction = host_segv_handler;
-    sigaction(SIGSEGV, &act, NULL);
-    sigaction(SIGBUS, &act, NULL);
+        act.sa_sigaction = host_segv_handler;
+        sigaction(SIGSEGV, &act, NULL);
+        sigaction(SIGBUS, &act, NULL);
 #if defined (TARGET_I386) && defined(USE_CODE_COPY)
-    sigaction(SIGFPE, &act, NULL);
+        sigaction(SIGFPE, &act, NULL);
 #endif
+    }
 #endif
 
-    /* timer signal */
-    sigfillset(&act.sa_mask);
-    act.sa_flags = SA_SIGINFO;
-#if defined (TARGET_I386) && defined(USE_CODE_COPY)
-    act.sa_flags |= SA_ONSTACK;
-#endif
-    act.sa_sigaction = host_alarm_handler;
-    sigaction(SIGALRM, &act, NULL);
-
-    itv.it_interval.tv_sec = 0;
-    itv.it_interval.tv_usec = 1000;
-    itv.it_value.tv_sec = 0;
-    itv.it_value.tv_usec = 10 * 1000;
-    setitimer(ITIMER_REAL, &itv, NULL);
-    /* we probe the tick duration of the kernel to inform the user if
-       the emulated kernel requested a too high timer frequency */
-    getitimer(ITIMER_REAL, &itv);
-    timer_ms = itv.it_interval.tv_usec / 1000;
-    pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * PIT_FREQ) / 
-        1000000;
+#ifndef _WIN32
+    {
+        struct sigaction act;
+        sigfillset(&act.sa_mask);
+        act.sa_flags = 0;
+        act.sa_handler = SIG_IGN;
+        sigaction(SIGPIPE, &act, NULL);
+    }
+#endif
+    init_timers();
+
+#if defined(TARGET_I386)
+    pc_init(ram_size, vga_ram_size, boot_device,
+            ds, fd_filename, snapshot,
+            kernel_filename, kernel_cmdline, initrd_filename);
+#elif defined(TARGET_PPC)
+    ppc_init(ram_size, vga_ram_size, boot_device,
+            ds, fd_filename, snapshot,
+            kernel_filename, kernel_cmdline, initrd_filename);
+#elif defined(TARGET_SPARC)
+    sun4m_init(ram_size, vga_ram_size, boot_device,
+            ds, fd_filename, snapshot,
+            kernel_filename, kernel_cmdline, initrd_filename);
+#endif
 
+    gui_timer = qemu_new_timer(rt_clock, gui_update, NULL);
+    qemu_mod_timer(gui_timer, qemu_get_clock(rt_clock));
+
+#ifdef CONFIG_GDBSTUB
     if (use_gdbstub) {
-        cpu_gdbstub(NULL, main_loop, gdbstub_port);
-    } else {
-        main_loop(NULL);
+        if (gdbserver_start(gdbstub_port) < 0) {
+            fprintf(stderr, "Could not open gdbserver socket on port %d\n", 
+                    gdbstub_port);
+            exit(1);
+        } else {
+            printf("Waiting gdb connection on port %d\n", gdbstub_port);
+        }
+    } else 
+#endif
+    if (loadvm)
+        qemu_loadvm(loadvm);
+
+    {
+        /* XXX: simplify init */
+        read_passwords();
+        if (start_emulation) {
+            vm_start();
+        }
     }
+    main_loop();
+    quit_timers();
     return 0;
 }