external/qemu 0.8.2

1 files changed, 6224 insertions, 0 deletions

diff --git a/vl.c b/vl.c
new file mode 100644
index 0000000..657116b
--- /dev/null
+++ b/vl.c
@@ -0,0 +1,6224 @@
+/*
+ * QEMU System Emulator
+ * 
+ * Copyright (c) 2003-2005 Fabrice Bellard
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include "vl.h"
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <time.h>
+#include <errno.h>
+#include <sys/time.h>
+
+#ifndef _WIN32
+#include <sys/times.h>
+#include <sys/wait.h>
+#include <termios.h>
+#include <sys/poll.h>
+#include <sys/mman.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <dirent.h>
+#include <netdb.h>
+#ifdef _BSD
+#include <sys/stat.h>
+#ifndef __APPLE__
+#include <libutil.h>
+#endif
+#else
+#ifndef __sun__
+#include <linux/if.h>
+#include <linux/if_tun.h>
+#include <pty.h>
+#include <malloc.h>
+#include <linux/rtc.h>
+#include <linux/ppdev.h>
+#endif
+#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
+
+#include "qemu_socket.h"
+
+#ifdef CONFIG_SDL
+#ifdef __APPLE__
+#include <SDL/SDL.h>
+#endif
+#endif /* CONFIG_SDL */
+
+#ifdef CONFIG_COCOA
+#undef main
+#define main qemu_main
+#endif /* CONFIG_COCOA */
+
+#include "disas.h"
+
+#include "exec-all.h"
+
+#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
+
+//#define DEBUG_UNUSED_IOPORT
+//#define DEBUG_IOPORT
+
+#define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024)
+
+#ifdef TARGET_PPC
+#define DEFAULT_RAM_SIZE 144
+#else
+#define DEFAULT_RAM_SIZE 128
+#endif
+/* in ms */
+#define GUI_REFRESH_INTERVAL 30
+
+/* Max number of USB devices that can be specified on the commandline.  */
+#define MAX_USB_CMDLINE 8
+
+/* XXX: use a two level table to limit memory usage */
+#define MAX_IOPORTS 65536
+
+const char *bios_dir = CONFIG_QEMU_SHAREDIR;
+char phys_ram_file[1024];
+void *ioport_opaque[MAX_IOPORTS];
+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;
+const char* keyboard_layout = NULL;
+int64_t ticks_per_sec;
+int boot_device = 'c';
+int ram_size;
+int pit_min_timer_count = 0;
+int nb_nics;
+NICInfo nd_table[MAX_NICS];
+QEMUTimer *gui_timer;
+int vm_running;
+int rtc_utc = 1;
+int cirrus_vga_enabled = 1;
+#ifdef TARGET_SPARC
+int graphic_width = 1024;
+int graphic_height = 768;
+#else
+int graphic_width = 800;
+int graphic_height = 600;
+#endif
+int graphic_depth = 15;
+int full_screen = 0;
+CharDriverState *serial_hds[MAX_SERIAL_PORTS];
+CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
+#ifdef TARGET_I386
+int win2k_install_hack = 0;
+#endif
+int usb_enabled = 0;
+static VLANState *first_vlan;
+int smp_cpus = 1;
+int vnc_display = -1;
+#if defined(TARGET_SPARC)
+#define MAX_CPUS 16
+#elif defined(TARGET_I386)
+#define MAX_CPUS 255
+#else
+#define MAX_CPUS 1
+#endif
+int acpi_enabled = 1;
+int fd_bootchk = 1;
+
+/***********************************************************/
+/* x86 ISA bus support */
+
+target_phys_addr_t isa_mem_base = 0;
+PicState2 *isa_pic;
+
+uint32_t default_ioport_readb(void *opaque, uint32_t address)
+{
+#ifdef DEBUG_UNUSED_IOPORT
+    fprintf(stderr, "inb: port=0x%04x\n", address);
+#endif
+    return 0xff;
+}
+
+void default_ioport_writeb(void *opaque, uint32_t address, uint32_t data)
+{
+#ifdef DEBUG_UNUSED_IOPORT
+    fprintf(stderr, "outb: port=0x%04x data=0x%02x\n", address, data);
+#endif
+}
+
+/* default is to make two byte accesses */
+uint32_t default_ioport_readw(void *opaque, uint32_t address)
+{
+    uint32_t data;
+    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](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)
+{
+#ifdef DEBUG_UNUSED_IOPORT
+    fprintf(stderr, "inl: port=0x%04x\n", address);
+#endif
+    return 0xffffffff;
+}
+
+void default_ioport_writel(void *opaque, uint32_t address, uint32_t data)
+{
+#ifdef DEBUG_UNUSED_IOPORT
+    fprintf(stderr, "outl: port=0x%04x data=0x%02x\n", address, data);
+#endif
+}
+
+void init_ioports(void)
+{
+    int i;
+
+    for(i = 0; i < MAX_IOPORTS; i++) {
+        ioport_read_table[0][i] = default_ioport_readb;
+        ioport_write_table[0][i] = default_ioport_writeb;
+        ioport_read_table[1][i] = default_ioport_readw;
+        ioport_write_table[1][i] = default_ioport_writew;
+        ioport_read_table[2][i] = default_ioport_readl;
+        ioport_write_table[2][i] = default_ioport_writel;
+    }
+}
+
+/* size is the word size in byte */
+int register_ioport_read(int start, int length, int size, 
+                         IOPortReadFunc *func, void *opaque)
+{
+    int i, bsize;
+
+    if (size == 1) {
+        bsize = 0;
+    } else if (size == 2) {
+        bsize = 1;
+    } else if (size == 4) {
+        bsize = 2;
+    } else {
+        hw_error("register_ioport_read: invalid size");
+        return -1;
+    }
+    for(i = start; i < start + length; i += size) {
+        ioport_read_table[bsize][i] = func;
+        if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque)
+            hw_error("register_ioport_read: invalid opaque");
+        ioport_opaque[i] = opaque;
+    }
+    return 0;
+}
+
+/* size is the word size in byte */
+int register_ioport_write(int start, int length, int size, 
+                          IOPortWriteFunc *func, void *opaque)
+{
+    int i, bsize;
+
+    if (size == 1) {
+        bsize = 0;
+    } else if (size == 2) {
+        bsize = 1;
+    } else if (size == 4) {
+        bsize = 2;
+    } else {
+        hw_error("register_ioport_write: invalid size");
+        return -1;
+    }
+    for(i = start; i < start + length; i += size) {
+        ioport_write_table[bsize][i] = func;
+        if (ioport_opaque[i] != NULL && ioport_opaque[i] != opaque)
+            hw_error("register_ioport_read: invalid opaque");
+        ioport_opaque[i] = opaque;
+    }
+    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;
+    char *q = buf;
+
+    if (buf_size <= 0)
+        return;
+
+    for(;;) {
+        c = *str++;
+        if (c == 0 || q >= buf + buf_size - 1)
+            break;
+        *q++ = c;
+    }
+    *q = '\0';
+}
+
+/* strcat and truncate. */
+char *pstrcat(char *buf, int buf_size, const char *s)
+{
+    int len;
+    len = strlen(buf);
+    if (len < buf_size) 
+        pstrcpy(buf + len, buf_size - len, 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;
+}
+
+void cpu_outb(CPUState *env, int addr, int val)
+{
+#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);
+#ifdef USE_KQEMU
+    if (env)
+        env->last_io_time = cpu_get_time_fast();
+#endif
+}
+
+void cpu_outw(CPUState *env, int addr, int val)
+{
+#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);
+#ifdef USE_KQEMU
+    if (env)
+        env->last_io_time = cpu_get_time_fast();
+#endif
+}
+
+void cpu_outl(CPUState *env, int addr, int val)
+{
+#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);
+#ifdef USE_KQEMU
+    if (env)
+        env->last_io_time = cpu_get_time_fast();
+#endif
+}
+
+int cpu_inb(CPUState *env, int 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
+#ifdef USE_KQEMU
+    if (env)
+        env->last_io_time = cpu_get_time_fast();
+#endif
+    return val;
+}
+
+int cpu_inw(CPUState *env, int 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
+#ifdef USE_KQEMU
+    if (env)
+        env->last_io_time = cpu_get_time_fast();
+#endif
+    return val;
+}
+
+int cpu_inl(CPUState *env, int 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
+#ifdef USE_KQEMU
+    if (env)
+        env->last_io_time = cpu_get_time_fast();
+#endif
+    return val;
+}
+
+/***********************************************************/
+void hw_error(const char *fmt, ...)
+{
+    va_list ap;
+    CPUState *env;
+
+    va_start(ap, fmt);
+    fprintf(stderr, "qemu: hardware error: ");
+    vfprintf(stderr, fmt, ap);
+    fprintf(stderr, "\n");
+    for(env = first_cpu; env != NULL; env = env->next_cpu) {
+        fprintf(stderr, "CPU #%d:\n", env->cpu_index);
+#ifdef TARGET_I386
+        cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU);
+#else
+        cpu_dump_state(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;
+static int qemu_put_mouse_event_absolute;
+
+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, int absolute)
+{
+    qemu_put_mouse_event_opaque = opaque;
+    qemu_put_mouse_event = func;
+    qemu_put_mouse_event_absolute = absolute;
+}
+
+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);
+    }
+}
+
+int kbd_mouse_is_absolute(void)
+{
+    return qemu_put_mouse_event_absolute;
+}
+
+/* compute with 96 bit intermediate result: (a*b)/c */
+uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
+{
+    union {
+        uint64_t ll;
+        struct {
+#ifdef WORDS_BIGENDIAN
+            uint32_t high, low;
+#else
+            uint32_t low, high;
+#endif            
+        } l;
+    } u, res;
+    uint64_t rl, rh;
+
+    u.ll = a;
+    rl = (uint64_t)u.l.low * (uint64_t)b;
+    rh = (uint64_t)u.l.high * (uint64_t)b;
+    rh += (rl >> 32);
+    res.l.high = rh / c;
+    res.l.low = (((rh % c) << 32) + (rl & 0xffffffff)) / c;
+    return res.ll;
+}
+
+/***********************************************************/
+/* real time host monotonic timer */
+
+#define QEMU_TIMER_BASE 1000000000LL
+
+#ifdef WIN32
+
+static int64_t clock_freq;
+
+static void init_get_clock(void)
+{
+    LARGE_INTEGER freq;
+    int ret;
+    ret = QueryPerformanceFrequency(&freq);
+    if (ret == 0) {
+        fprintf(stderr, "Could not calibrate ticks\n");
+        exit(1);
+    }
+    clock_freq = freq.QuadPart;
+}
+
+static int64_t get_clock(void)
+{
+    LARGE_INTEGER ti;
+    QueryPerformanceCounter(&ti);
+    return muldiv64(ti.QuadPart, QEMU_TIMER_BASE, clock_freq);
+}
+
+#else
+
+static int use_rt_clock;
+
+static void init_get_clock(void)
+{
+    use_rt_clock = 0;
+#if defined(__linux__)
+    {
+        struct timespec ts;
+        if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0) {
+            use_rt_clock = 1;
+        }
+    }
+#endif
+}
+
+static int64_t get_clock(void)
+{
+#if defined(__linux__)
+    if (use_rt_clock) {
+        struct timespec ts;
+        clock_gettime(CLOCK_MONOTONIC, &ts);
+        return ts.tv_sec * 1000000000LL + ts.tv_nsec;
+    } else 
+#endif
+    {
+        /* XXX: using gettimeofday leads to problems if the date
+           changes, so it should be avoided. */
+        struct timeval tv;
+        gettimeofday(&tv, NULL);
+        return tv.tv_sec * 1000000000LL + (tv.tv_usec * 1000);
+    }
+}
+
+#endif
+
+/***********************************************************/
+/* guest cycle counter */
+
+static int64_t cpu_ticks_prev;
+static int64_t cpu_ticks_offset;
+static int64_t cpu_clock_offset;
+static int cpu_ticks_enabled;
+
+/* return the host CPU cycle counter and handle stop/restart */
+int64_t cpu_get_ticks(void)
+{
+    if (!cpu_ticks_enabled) {
+        return cpu_ticks_offset;
+    } else {
+        int64_t ticks;
+        ticks = cpu_get_real_ticks();
+        if (cpu_ticks_prev > ticks) {
+            /* Note: non increasing ticks may happen if the host uses
+               software suspend */
+            cpu_ticks_offset += cpu_ticks_prev - ticks;
+        }
+        cpu_ticks_prev = ticks;
+        return ticks + cpu_ticks_offset;
+    }
+}
+
+/* return the host CPU monotonic timer and handle stop/restart */
+static int64_t cpu_get_clock(void)
+{
+    int64_t ti;
+    if (!cpu_ticks_enabled) {
+        return cpu_clock_offset;
+    } else {
+        ti = get_clock();
+        return ti + cpu_clock_offset;
+    }
+}
+
+/* enable cpu_get_ticks() */
+void cpu_enable_ticks(void)
+{
+    if (!cpu_ticks_enabled) {
+        cpu_ticks_offset -= cpu_get_real_ticks();
+        cpu_clock_offset -= get_clock();
+        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)
+{
+    if (cpu_ticks_enabled) {
+        cpu_ticks_offset = cpu_get_ticks();
+        cpu_clock_offset = cpu_get_clock();
+        cpu_ticks_enabled = 0;
+    }
+}
+
+/***********************************************************/
+/* timers */
+ 
+#define QEMU_TIMER_REALTIME 0
+#define QEMU_TIMER_VIRTUAL  1
+
+struct QEMUClock {
+    int type;
+    /* XXX: add frequency */
+};
+
+struct QEMUTimer {
+    QEMUClock *clock;
+    int64_t expire_time;
+    QEMUTimerCB *cb;
+    void *opaque;
+    struct QEMUTimer *next;
+};
+
+QEMUClock *rt_clock;
+QEMUClock *vm_clock;
+
+static QEMUTimer *active_timers[2];
+#ifdef _WIN32
+static MMRESULT timerID;
+static HANDLE host_alarm = NULL;
+static unsigned int period = 1;
+#else
+/* frequency of the times() clock tick */
+static int timer_freq;
+#endif
+
+QEMUClock *qemu_new_clock(int type)
+{
+    QEMUClock *clock;
+    clock = qemu_mallocz(sizeof(QEMUClock));
+    if (!clock)
+        return NULL;
+    clock->type = type;
+    return clock;
+}
+
+QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque)
+{
+    QEMUTimer *ts;
+
+    ts = qemu_mallocz(sizeof(QEMUTimer));
+    ts->clock = clock;
+    ts->cb = cb;
+    ts->opaque = opaque;
+    return ts;
+}
+
+void qemu_free_timer(QEMUTimer *ts)
+{
+    qemu_free(ts);
+}
+
+/* stop a timer, but do not dealloc it */
+void qemu_del_timer(QEMUTimer *ts)
+{
+    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;
+    }
+}
+
+/* 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)
+{
+    QEMUTimer **pt, *t;
+
+    qemu_del_timer(ts);
+
+    /* 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;
+}
+
+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 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 qemu_run_timers(QEMUTimer **ptimer_head, int64_t current_time)
+{
+    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);
+    }
+}
+
+int64_t qemu_get_clock(QEMUClock *clock)
+{
+    switch(clock->type) {
+    case QEMU_TIMER_REALTIME:
+        return get_clock() / 1000000;
+    default:
+    case QEMU_TIMER_VIRTUAL:
+        return cpu_get_clock();
+    }
+}
+
+static void init_timers(void)
+{
+    init_get_clock();
+    ticks_per_sec = QEMU_TIMER_BASE;
+    rt_clock = qemu_new_clock(QEMU_TIMER_REALTIME);
+    vm_clock = qemu_new_clock(QEMU_TIMER_VIRTUAL);
+}
+
+/* save a timer */
+void qemu_put_timer(QEMUFile *f, QEMUTimer *ts)
+{
+    uint64_t expire_time;
+
+    if (qemu_timer_pending(ts)) {
+        expire_time = ts->expire_time;
+    } else {
+        expire_time = -1;
+    }
+    qemu_put_be64(f, expire_time);
+}
+
+void qemu_get_timer(QEMUFile *f, QEMUTimer *ts)
+{
+    uint64_t expire_time;
+
+    expire_time = qemu_get_be64(f);
+    if (expire_time != -1) {
+        qemu_mod_timer(ts, expire_time);
+    } else {
+        qemu_del_timer(ts);
+    }
+}
+
+static void timer_save(QEMUFile *f, void *opaque)
+{
+    if (cpu_ticks_enabled) {
+        hw_error("cannot save state if virtual timers are running");
+    }
+    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;
+}
+
+#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=%" PRId64 " us max=%" PRId64 " us avg=%" PRId64 " 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))) {
+#ifdef _WIN32
+        SetEvent(host_alarm);
+#endif
+        CPUState *env = cpu_single_env;
+        if (env) {
+            /* stop the currently executing cpu because a timer occured */
+            cpu_interrupt(env, CPU_INTERRUPT_EXIT);
+#ifdef USE_KQEMU
+            if (env->kqemu_enabled) {
+                kqemu_cpu_interrupt(env);
+            }
+#endif
+        }
+    }
+}
+
+#ifndef _WIN32
+
+#if defined(__linux__)
+
+#define RTC_FREQ 1024
+
+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_timer_alarm(void)
+{
+#ifdef _WIN32
+    {
+        int count=0;
+        TIMECAPS tc;
+
+        ZeroMemory(&tc, sizeof(TIMECAPS));
+        timeGetDevCaps(&tc, sizeof(TIMECAPS));
+        if (period < tc.wPeriodMin)
+            period = tc.wPeriodMin;
+        timeBeginPeriod(period);
+        timerID = timeSetEvent(1,     // interval (ms)
+                               period,     // resolution
+                               host_alarm_handler, // function
+                               (DWORD)&count,  // user parameter
+                               TIME_PERIODIC | TIME_CALLBACK_FUNCTION);
+ 	if( !timerID ) {
+            perror("failed timer alarm");
+            exit(1);
+ 	}
+        host_alarm = CreateEvent(NULL, FALSE, FALSE, NULL);
+        if (!host_alarm) {
+            perror("failed CreateEvent");
+            exit(1);
+        }
+        qemu_add_wait_object(host_alarm, NULL, NULL);
+    }
+    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 = 999; /* for i386 kernel 2.6 to get 1 ms */
+        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__)
+        /* XXX: force /dev/rtc usage because even 2.6 kernels may not
+           have timers with 1 ms resolution. The correct solution will
+           be to use the POSIX real time timers available in recent
+           2.6 kernels */
+        if (itv.it_interval.tv_usec > 1000 || 1) {
+            /* 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);
+    timeEndPeriod(period);
+    if (host_alarm) {
+        CloseHandle(host_alarm);
+        host_alarm = NULL;
+    }
+#endif
+}
+
+/***********************************************************/
+/* character device */
+
+int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
+{
+    return s->chr_write(s, buf, len);
+}
+
+int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg)
+{
+    if (!s->chr_ioctl)
+        return -ENOTSUP;
+    return s->chr_ioctl(s, cmd, arg);
+}
+
+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;
+}
+
+#ifdef _WIN32
+
+static void socket_cleanup(void)
+{
+    WSACleanup();
+}
+
+static int socket_init(void)
+{
+    WSADATA Data;
+    int ret, err;
+
+    ret = WSAStartup(MAKEWORD(2,2), &Data);
+    if (ret != 0) {
+        err = WSAGetLastError();
+        fprintf(stderr, "WSAStartup: %d\n", err);
+        return -1;
+    }
+    atexit(socket_cleanup);
+    return 0;
+}
+
+static int send_all(int fd, const uint8_t *buf, int len1)
+{
+    int ret, len;
+    
+    len = len1;
+    while (len > 0) {
+        ret = send(fd, buf, len, 0);
+        if (ret < 0) {
+            int errno;
+            errno = WSAGetLastError();
+            if (errno != WSAEWOULDBLOCK) {
+                return -1;
+            }
+        } else if (ret == 0) {
+            break;
+        } else {
+            buf += ret;
+            len -= ret;
+        }
+    }
+    return len1 - len;
+}
+
+void socket_set_nonblock(int fd)
+{
+    unsigned long opt = 1;
+    ioctlsocket(fd, FIONBIO, &opt);
+}
+
+#else
+
+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 inline int send_all(int fd, const uint8_t *buf, int len1)
+{
+    return unix_write(fd, buf, len1);
+}
+
+void socket_set_nonblock(int fd)
+{
+    fcntl(fd, F_SETFL, O_NONBLOCK);
+}
+#endif /* !_WIN32 */
+
+#ifndef _WIN32
+
+typedef struct {
+    int fd_in, fd_out;
+    IOCanRWHandler *fd_can_read; 
+    IOReadHandler *fd_read;
+    void *fd_opaque;
+    int max_size;
+} FDCharDriver;
+
+#define STDIO_MAX_CLIENTS 2
+
+static int stdio_nb_clients;
+static CharDriverState *stdio_clients[STDIO_MAX_CLIENTS];
+
+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 int fd_chr_read_poll(void *opaque)
+{
+    CharDriverState *chr = opaque;
+    FDCharDriver *s = chr->opaque;
+
+    s->max_size = s->fd_can_read(s->fd_opaque);
+    return s->max_size;
+}
+
+static void fd_chr_read(void *opaque)
+{
+    CharDriverState *chr = opaque;
+    FDCharDriver *s = chr->opaque;
+    int size, len;
+    uint8_t buf[1024];
+    
+    len = sizeof(buf);
+    if (len > s->max_size)
+        len = s->max_size;
+    if (len == 0)
+        return;
+    size = read(s->fd_in, buf, len);
+    if (size > 0) {
+        s->fd_read(s->fd_opaque, buf, size);
+    }
+}
+
+static void fd_chr_add_read_handler(CharDriverState *chr, 
+                                    IOCanRWHandler *fd_can_read, 
+                                    IOReadHandler *fd_read, void *opaque)
+{
+    FDCharDriver *s = chr->opaque;
+
+    if (s->fd_in >= 0) {
+        s->fd_can_read = fd_can_read;
+        s->fd_read = fd_read;
+        s->fd_opaque = opaque;
+        if (nographic && s->fd_in == 0) {
+        } else {
+            qemu_set_fd_handler2(s->fd_in, fd_chr_read_poll, 
+                                 fd_chr_read, NULL, chr);
+        }
+    }
+}
+
+/* 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;
+}
+
+CharDriverState *qemu_chr_open_file_out(const char *file_out)
+{
+    int fd_out;
+
+    fd_out = open(file_out, O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666);
+    if (fd_out < 0)
+        return NULL;
+    return qemu_chr_open_fd(-1, fd_out);
+}
+
+CharDriverState *qemu_chr_open_pipe(const char *filename)
+{
+    int fd;
+
+    fd = open(filename, O_RDWR | O_BINARY);
+    if (fd < 0)
+        return NULL;
+    return qemu_chr_open_fd(fd, fd);
+}
+
+
+/* for STDIO, we handle the case where several clients use it
+   (nographic mode) */
+
+#define TERM_ESCAPE 0x01 /* ctrl-a is used for escape */
+
+#define TERM_FIFO_MAX_SIZE 1
+
+static int term_got_escape, client_index;
+static uint8_t term_fifo[TERM_FIFO_MAX_SIZE];
+static int term_fifo_size;
+static int term_timestamps;
+static int64_t term_timestamps_start;
+
+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 t    toggle console timestamps\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 't':
+            term_timestamps = !term_timestamps;
+            term_timestamps_start = -1;
+            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;
+            if (s->fd_can_read(s->fd_opaque) > 0) {
+                buf[0] = ch;
+                s->fd_read(s->fd_opaque, buf, 1);
+            } else if (term_fifo_size == 0) {
+                term_fifo[term_fifo_size++] = ch;
+            }
+        }
+    }
+}
+
+static int stdio_read_poll(void *opaque)
+{
+    CharDriverState *chr;
+    FDCharDriver *s;
+
+    if (client_index < stdio_nb_clients) {
+        chr = stdio_clients[client_index];
+        s = chr->opaque;
+        /* try to flush the queue if needed */
+        if (term_fifo_size != 0 && s->fd_can_read(s->fd_opaque) > 0) {
+            s->fd_read(s->fd_opaque, term_fifo, 1);
+            term_fifo_size = 0;
+        }
+        /* see if we can absorb more chars */
+        if (term_fifo_size == 0)
+            return 1;
+        else
+            return 0;
+    } else {
+        return 1;
+    }
+}
+
+static void stdio_read(void *opaque)
+{
+    int size;
+    uint8_t buf[1];
+    
+    size = read(0, buf, 1);
+    if (size > 0)
+        stdio_received_byte(buf[0]);
+}
+
+static int stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+    FDCharDriver *s = chr->opaque;
+    if (!term_timestamps) {
+        return unix_write(s->fd_out, buf, len);
+    } else {
+        int i;
+        char buf1[64];
+
+        for(i = 0; i < len; i++) {
+            unix_write(s->fd_out, buf + i, 1);
+            if (buf[i] == '\n') {
+                int64_t ti;
+                int secs;
+
+                ti = get_clock();
+                if (term_timestamps_start == -1)
+                    term_timestamps_start = ti;
+                ti -= term_timestamps_start;
+                secs = ti / 1000000000;
+                snprintf(buf1, sizeof(buf1), 
+                         "[%02d:%02d:%02d.%03d] ",
+                         secs / 3600,
+                         (secs / 60) % 60,
+                         secs % 60,
+                         (int)((ti / 1000000) % 1000));
+                unix_write(s->fd_out, buf1, strlen(buf1));
+            }
+        }
+        return len;
+    }
+}
+
+/* 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);
+        chr->chr_write = stdio_write;
+        if (stdio_nb_clients == 0)
+            qemu_set_fd_handler2(0, stdio_read_poll, stdio_read, NULL, 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)
+{
+    struct termios tty;
+    char slave_name[1024];
+    int master_fd, slave_fd;
+    
+    /* Not satisfying */
+    if (openpty(&master_fd, &slave_fd, slave_name, NULL, NULL) < 0) {
+        return NULL;
+    }
+    
+    /* Disabling local echo and line-buffered output */
+    tcgetattr (master_fd, &tty);
+    tty.c_lflag &= ~(ECHO|ICANON|ISIG);
+    tty.c_cc[VMIN] = 1;
+    tty.c_cc[VTIME] = 0;
+    tcsetattr (master_fd, TCSAFLUSH, &tty);
+
+    fprintf(stderr, "char device redirected to %s\n", slave_name);
+    return qemu_chr_open_fd(master_fd, master_fd);
+}
+
+static void tty_serial_init(int fd, int speed, 
+                            int parity, int data_bits, int stop_bits)
+{
+    struct termios tty;
+    speed_t spd;
+
+#if 0
+    printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n", 
+           speed, parity, data_bits, stop_bits);
+#endif
+    tcgetattr (fd, &tty);
+
+    switch(speed) {
+    case 50:
+        spd = B50;
+        break;
+    case 75:
+        spd = B75;
+        break;
+    case 300:
+        spd = B300;
+        break;
+    case 600:
+        spd = B600;
+        break;
+    case 1200:
+        spd = B1200;
+        break;
+    case 2400:
+        spd = B2400;
+        break;
+    case 4800:
+        spd = B4800;
+        break;
+    case 9600:
+        spd = B9600;
+        break;
+    case 19200:
+        spd = B19200;
+        break;
+    case 38400:
+        spd = B38400;
+        break;
+    case 57600:
+        spd = B57600;
+        break;
+    default:
+    case 115200:
+        spd = B115200;
+        break;
+    }
+
+    cfsetispeed(&tty, spd);
+    cfsetospeed(&tty, spd);
+
+    tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
+                          |INLCR|IGNCR|ICRNL|IXON);
+    tty.c_oflag |= OPOST;
+    tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
+    tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS);
+    switch(data_bits) {
+    default:
+    case 8:
+        tty.c_cflag |= CS8;
+        break;
+    case 7:
+        tty.c_cflag |= CS7;
+        break;
+    case 6:
+        tty.c_cflag |= CS6;
+        break;
+    case 5:
+        tty.c_cflag |= CS5;
+        break;
+    }
+    switch(parity) {
+    default:
+    case 'N':
+        break;
+    case 'E':
+        tty.c_cflag |= PARENB;
+        break;
+    case 'O':
+        tty.c_cflag |= PARENB | PARODD;
+        break;
+    }
+    
+    tcsetattr (fd, TCSANOW, &tty);
+}
+
+static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
+{
+    FDCharDriver *s = chr->opaque;
+    
+    switch(cmd) {
+    case CHR_IOCTL_SERIAL_SET_PARAMS:
+        {
+            QEMUSerialSetParams *ssp = arg;
+            tty_serial_init(s->fd_in, ssp->speed, ssp->parity, 
+                            ssp->data_bits, ssp->stop_bits);
+        }
+        break;
+    case CHR_IOCTL_SERIAL_SET_BREAK:
+        {
+            int enable = *(int *)arg;
+            if (enable)
+                tcsendbreak(s->fd_in, 1);
+        }
+        break;
+    default:
+        return -ENOTSUP;
+    }
+    return 0;
+}
+
+CharDriverState *qemu_chr_open_tty(const char *filename)
+{
+    CharDriverState *chr;
+    int fd;
+
+    fd = open(filename, O_RDWR | O_NONBLOCK);
+    if (fd < 0)
+        return NULL;
+    fcntl(fd, F_SETFL, O_NONBLOCK);
+    tty_serial_init(fd, 115200, 'N', 8, 1);
+    chr = qemu_chr_open_fd(fd, fd);
+    if (!chr)
+        return NULL;
+    chr->chr_ioctl = tty_serial_ioctl;
+    return chr;
+}
+
+static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
+{
+    int fd = (int)chr->opaque;
+    uint8_t b;
+
+    switch(cmd) {
+    case CHR_IOCTL_PP_READ_DATA:
+        if (ioctl(fd, PPRDATA, &b) < 0)
+            return -ENOTSUP;
+        *(uint8_t *)arg = b;
+        break;
+    case CHR_IOCTL_PP_WRITE_DATA:
+        b = *(uint8_t *)arg;
+        if (ioctl(fd, PPWDATA, &b) < 0)
+            return -ENOTSUP;
+        break;
+    case CHR_IOCTL_PP_READ_CONTROL:
+        if (ioctl(fd, PPRCONTROL, &b) < 0)
+            return -ENOTSUP;
+        *(uint8_t *)arg = b;
+        break;
+    case CHR_IOCTL_PP_WRITE_CONTROL:
+        b = *(uint8_t *)arg;
+        if (ioctl(fd, PPWCONTROL, &b) < 0)
+            return -ENOTSUP;
+        break;
+    case CHR_IOCTL_PP_READ_STATUS:
+        if (ioctl(fd, PPRSTATUS, &b) < 0)
+            return -ENOTSUP;
+        *(uint8_t *)arg = b;
+        break;
+    default:
+        return -ENOTSUP;
+    }
+    return 0;
+}
+
+CharDriverState *qemu_chr_open_pp(const char *filename)
+{
+    CharDriverState *chr;
+    int fd;
+
+    fd = open(filename, O_RDWR);
+    if (fd < 0)
+        return NULL;
+
+    if (ioctl(fd, PPCLAIM) < 0) {
+        close(fd);
+        return NULL;
+    }
+
+    chr = qemu_mallocz(sizeof(CharDriverState));
+    if (!chr) {
+        close(fd);
+        return NULL;
+    }
+    chr->opaque = (void *)fd;
+    chr->chr_write = null_chr_write;
+    chr->chr_add_read_handler = null_chr_add_read_handler;
+    chr->chr_ioctl = pp_ioctl;
+    return chr;
+}
+
+#else
+CharDriverState *qemu_chr_open_pty(void)
+{
+    return NULL;
+}
+#endif
+
+#endif /* !defined(_WIN32) */
+
+#ifdef _WIN32
+typedef struct {
+    IOCanRWHandler *fd_can_read; 
+    IOReadHandler *fd_read;
+    void *win_opaque;
+    int max_size;
+    HANDLE hcom, hrecv, hsend;
+    OVERLAPPED orecv, osend;
+    BOOL fpipe;
+    DWORD len;
+} WinCharState;
+
+#define NSENDBUF 2048
+#define NRECVBUF 2048
+#define MAXCONNECT 1
+#define NTIMEOUT 5000
+
+static int win_chr_poll(void *opaque);
+static int win_chr_pipe_poll(void *opaque);
+
+static void win_chr_close2(WinCharState *s)
+{
+    if (s->hsend) {
+        CloseHandle(s->hsend);
+        s->hsend = NULL;
+    }
+    if (s->hrecv) {
+        CloseHandle(s->hrecv);
+        s->hrecv = NULL;
+    }
+    if (s->hcom) {
+        CloseHandle(s->hcom);
+        s->hcom = NULL;
+    }
+    if (s->fpipe)
+        qemu_del_polling_cb(win_chr_pipe_poll, s);
+    else
+        qemu_del_polling_cb(win_chr_poll, s);
+}
+
+static void win_chr_close(CharDriverState *chr)
+{
+    WinCharState *s = chr->opaque;
+    win_chr_close2(s);
+}
+
+static int win_chr_init(WinCharState *s, const char *filename)
+{
+    COMMCONFIG comcfg;
+    COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
+    COMSTAT comstat;
+    DWORD size;
+    DWORD err;
+    
+    s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!s->hsend) {
+        fprintf(stderr, "Failed CreateEvent\n");
+        goto fail;
+    }
+    s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!s->hrecv) {
+        fprintf(stderr, "Failed CreateEvent\n");
+        goto fail;
+    }
+
+    s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
+                      OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
+    if (s->hcom == INVALID_HANDLE_VALUE) {
+        fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
+        s->hcom = NULL;
+        goto fail;
+    }
+    
+    if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
+        fprintf(stderr, "Failed SetupComm\n");
+        goto fail;
+    }
+    
+    ZeroMemory(&comcfg, sizeof(COMMCONFIG));
+    size = sizeof(COMMCONFIG);
+    GetDefaultCommConfig(filename, &comcfg, &size);
+    comcfg.dcb.DCBlength = sizeof(DCB);
+    CommConfigDialog(filename, NULL, &comcfg);
+
+    if (!SetCommState(s->hcom, &comcfg.dcb)) {
+        fprintf(stderr, "Failed SetCommState\n");
+        goto fail;
+    }
+
+    if (!SetCommMask(s->hcom, EV_ERR)) {
+        fprintf(stderr, "Failed SetCommMask\n");
+        goto fail;
+    }
+
+    cto.ReadIntervalTimeout = MAXDWORD;
+    if (!SetCommTimeouts(s->hcom, &cto)) {
+        fprintf(stderr, "Failed SetCommTimeouts\n");
+        goto fail;
+    }
+    
+    if (!ClearCommError(s->hcom, &err, &comstat)) {
+        fprintf(stderr, "Failed ClearCommError\n");
+        goto fail;
+    }
+    qemu_add_polling_cb(win_chr_poll, s);
+    return 0;
+
+ fail:
+    win_chr_close2(s);
+    return -1;
+}
+
+static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
+{
+    WinCharState *s = chr->opaque;
+    DWORD len, ret, size, err;
+
+    len = len1;
+    ZeroMemory(&s->osend, sizeof(s->osend));
+    s->osend.hEvent = s->hsend;
+    while (len > 0) {
+        if (s->hsend)
+            ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
+        else
+            ret = WriteFile(s->hcom, buf, len, &size, NULL);
+        if (!ret) {
+            err = GetLastError();
+            if (err == ERROR_IO_PENDING) {
+                ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
+                if (ret) {
+                    buf += size;
+                    len -= size;
+                } else {
+                    break;
+                }
+            } else {
+                break;
+            }
+        } else {
+            buf += size;
+            len -= size;
+        }
+    }
+    return len1 - len;
+}
+
+static int win_chr_read_poll(WinCharState *s)
+{
+    s->max_size = s->fd_can_read(s->win_opaque);
+    return s->max_size;
+}
+            
+static void win_chr_readfile(WinCharState *s)
+{
+    int ret, err;
+    uint8_t buf[1024];
+    DWORD size;
+    
+    ZeroMemory(&s->orecv, sizeof(s->orecv));
+    s->orecv.hEvent = s->hrecv;
+    ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
+    if (!ret) {
+        err = GetLastError();
+        if (err == ERROR_IO_PENDING) {
+            ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
+        }
+    }
+
+    if (size > 0) {
+        s->fd_read(s->win_opaque, buf, size);
+    }
+}
+
+static void win_chr_read(WinCharState *s)
+{
+    if (s->len > s->max_size)
+        s->len = s->max_size;
+    if (s->len == 0)
+        return;
+    
+    win_chr_readfile(s);
+}
+
+static int win_chr_poll(void *opaque)
+{
+    WinCharState *s = opaque;
+    COMSTAT status;
+    DWORD comerr;
+    
+    ClearCommError(s->hcom, &comerr, &status);
+    if (status.cbInQue > 0) {
+        s->len = status.cbInQue;
+        win_chr_read_poll(s);
+        win_chr_read(s);
+        return 1;
+    }
+    return 0;
+}
+
+static void win_chr_add_read_handler(CharDriverState *chr, 
+                                    IOCanRWHandler *fd_can_read, 
+                                    IOReadHandler *fd_read, void *opaque)
+{
+    WinCharState *s = chr->opaque;
+
+    s->fd_can_read = fd_can_read;
+    s->fd_read = fd_read;
+    s->win_opaque = opaque;
+}
+
+CharDriverState *qemu_chr_open_win(const char *filename)
+{
+    CharDriverState *chr;
+    WinCharState *s;
+    
+    chr = qemu_mallocz(sizeof(CharDriverState));
+    if (!chr)
+        return NULL;
+    s = qemu_mallocz(sizeof(WinCharState));
+    if (!s) {
+        free(chr);
+        return NULL;
+    }
+    chr->opaque = s;
+    chr->chr_write = win_chr_write;
+    chr->chr_add_read_handler = win_chr_add_read_handler;
+    chr->chr_close = win_chr_close;
+
+    if (win_chr_init(s, filename) < 0) {
+        free(s);
+        free(chr);
+        return NULL;
+    }
+    return chr;
+}
+
+static int win_chr_pipe_poll(void *opaque)
+{
+    WinCharState *s = opaque;
+    DWORD size;
+
+    PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
+    if (size > 0) {
+        s->len = size;
+        win_chr_read_poll(s);
+        win_chr_read(s);
+        return 1;
+    }
+    return 0;
+}
+
+static int win_chr_pipe_init(WinCharState *s, const char *filename)
+{
+    OVERLAPPED ov;
+    int ret;
+    DWORD size;
+    char openname[256];
+    
+    s->fpipe = TRUE;
+
+    s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!s->hsend) {
+        fprintf(stderr, "Failed CreateEvent\n");
+        goto fail;
+    }
+    s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
+    if (!s->hrecv) {
+        fprintf(stderr, "Failed CreateEvent\n");
+        goto fail;
+    }
+    
+    snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
+    s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
+                              PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
+                              PIPE_WAIT,
+                              MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
+    if (s->hcom == INVALID_HANDLE_VALUE) {
+        fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
+        s->hcom = NULL;
+        goto fail;
+    }
+
+    ZeroMemory(&ov, sizeof(ov));
+    ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
+    ret = ConnectNamedPipe(s->hcom, &ov);
+    if (ret) {
+        fprintf(stderr, "Failed ConnectNamedPipe\n");
+        goto fail;
+    }
+
+    ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
+    if (!ret) {
+        fprintf(stderr, "Failed GetOverlappedResult\n");
+        if (ov.hEvent) {
+            CloseHandle(ov.hEvent);
+            ov.hEvent = NULL;
+        }
+        goto fail;
+    }
+
+    if (ov.hEvent) {
+        CloseHandle(ov.hEvent);
+        ov.hEvent = NULL;
+    }
+    qemu_add_polling_cb(win_chr_pipe_poll, s);
+    return 0;
+
+ fail:
+    win_chr_close2(s);
+    return -1;
+}
+
+
+CharDriverState *qemu_chr_open_win_pipe(const char *filename)
+{
+    CharDriverState *chr;
+    WinCharState *s;
+
+    chr = qemu_mallocz(sizeof(CharDriverState));
+    if (!chr)
+        return NULL;
+    s = qemu_mallocz(sizeof(WinCharState));
+    if (!s) {
+        free(chr);
+        return NULL;
+    }
+    chr->opaque = s;
+    chr->chr_write = win_chr_write;
+    chr->chr_add_read_handler = win_chr_add_read_handler;
+    chr->chr_close = win_chr_close;
+    
+    if (win_chr_pipe_init(s, filename) < 0) {
+        free(s);
+        free(chr);
+        return NULL;
+    }
+    return chr;
+}
+
+CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
+{
+    CharDriverState *chr;
+    WinCharState *s;
+
+    chr = qemu_mallocz(sizeof(CharDriverState));
+    if (!chr)
+        return NULL;
+    s = qemu_mallocz(sizeof(WinCharState));
+    if (!s) {
+        free(chr);
+        return NULL;
+    }
+    s->hcom = fd_out;
+    chr->opaque = s;
+    chr->chr_write = win_chr_write;
+    chr->chr_add_read_handler = win_chr_add_read_handler;
+    return chr;
+}
+    
+CharDriverState *qemu_chr_open_win_file_out(const char *file_out)
+{
+    HANDLE fd_out;
+    
+    fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
+                        OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
+    if (fd_out == INVALID_HANDLE_VALUE)
+        return NULL;
+
+    return qemu_chr_open_win_file(fd_out);
+}
+#endif
+
+/***********************************************************/
+/* UDP Net console */
+
+typedef struct {
+    IOCanRWHandler *fd_can_read;
+    IOReadHandler *fd_read;
+    void *fd_opaque;
+    int fd;
+    struct sockaddr_in daddr;
+    char buf[1024];
+    int bufcnt;
+    int bufptr;
+    int max_size;
+} NetCharDriver;
+
+static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+    NetCharDriver *s = chr->opaque;
+
+    return sendto(s->fd, buf, len, 0,
+                  (struct sockaddr *)&s->daddr, sizeof(struct sockaddr_in));
+}
+
+static int udp_chr_read_poll(void *opaque)
+{
+    CharDriverState *chr = opaque;
+    NetCharDriver *s = chr->opaque;
+
+    s->max_size = s->fd_can_read(s->fd_opaque);
+
+    /* If there were any stray characters in the queue process them
+     * first
+     */
+    while (s->max_size > 0 && s->bufptr < s->bufcnt) {
+        s->fd_read(s->fd_opaque, &s->buf[s->bufptr], 1);
+        s->bufptr++;
+        s->max_size = s->fd_can_read(s->fd_opaque);
+    }
+    return s->max_size;
+}
+
+static void udp_chr_read(void *opaque)
+{
+    CharDriverState *chr = opaque;
+    NetCharDriver *s = chr->opaque;
+
+    if (s->max_size == 0)
+        return;
+    s->bufcnt = recv(s->fd, s->buf, sizeof(s->buf), 0);
+    s->bufptr = s->bufcnt;
+    if (s->bufcnt <= 0)
+        return;
+
+    s->bufptr = 0;
+    while (s->max_size > 0 && s->bufptr < s->bufcnt) {
+        s->fd_read(s->fd_opaque, &s->buf[s->bufptr], 1);
+        s->bufptr++;
+        s->max_size = s->fd_can_read(s->fd_opaque);
+    }
+}
+
+static void udp_chr_add_read_handler(CharDriverState *chr,
+                                    IOCanRWHandler *fd_can_read,
+                                    IOReadHandler *fd_read, void *opaque)
+{
+    NetCharDriver *s = chr->opaque;
+
+    if (s->fd >= 0) {
+        s->fd_can_read = fd_can_read;
+        s->fd_read = fd_read;
+        s->fd_opaque = opaque;
+        qemu_set_fd_handler2(s->fd, udp_chr_read_poll,
+                             udp_chr_read, NULL, chr);
+    }
+}
+
+int parse_host_port(struct sockaddr_in *saddr, const char *str);
+int parse_host_src_port(struct sockaddr_in *haddr,
+                        struct sockaddr_in *saddr,
+                        const char *str);
+
+CharDriverState *qemu_chr_open_udp(const char *def)
+{
+    CharDriverState *chr = NULL;
+    NetCharDriver *s = NULL;
+    int fd = -1;
+    struct sockaddr_in saddr;
+
+    chr = qemu_mallocz(sizeof(CharDriverState));
+    if (!chr)
+        goto return_err;
+    s = qemu_mallocz(sizeof(NetCharDriver));
+    if (!s)
+        goto return_err;
+
+    fd = socket(PF_INET, SOCK_DGRAM, 0);
+    if (fd < 0) {
+        perror("socket(PF_INET, SOCK_DGRAM)");
+        goto return_err;
+    }
+
+    if (parse_host_src_port(&s->daddr, &saddr, def) < 0) {
+        printf("Could not parse: %s\n", def);
+        goto return_err;
+    }
+
+    if (bind(fd, (struct sockaddr *)&saddr, sizeof(saddr)) < 0)
+    {
+        perror("bind");
+        goto return_err;
+    }
+
+    s->fd = fd;
+    s->bufcnt = 0;
+    s->bufptr = 0;
+    chr->opaque = s;
+    chr->chr_write = udp_chr_write;
+    chr->chr_add_read_handler = udp_chr_add_read_handler;
+    return chr;
+
+return_err:
+    if (chr)
+        free(chr);
+    if (s)
+        free(s);
+    if (fd >= 0)
+        closesocket(fd);
+    return NULL;
+}
+
+/***********************************************************/
+/* TCP Net console */
+
+typedef struct {
+    IOCanRWHandler *fd_can_read;
+    IOReadHandler *fd_read;
+    void *fd_opaque;
+    int fd, listen_fd;
+    int connected;
+    int max_size;
+    int do_telnetopt;
+} TCPCharDriver;
+
+static void tcp_chr_accept(void *opaque);
+
+static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
+{
+    TCPCharDriver *s = chr->opaque;
+    if (s->connected) {
+        return send_all(s->fd, buf, len);
+    } else {
+        /* XXX: indicate an error ? */
+        return len;
+    }
+}
+
+static int tcp_chr_read_poll(void *opaque)
+{
+    CharDriverState *chr = opaque;
+    TCPCharDriver *s = chr->opaque;
+    if (!s->connected)
+        return 0;
+    s->max_size = s->fd_can_read(s->fd_opaque);
+    return s->max_size;
+}
+
+#define IAC 255
+#define IAC_BREAK 243
+static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
+                                      TCPCharDriver *s,
+                                      char *buf, int *size)
+{
+    /* Handle any telnet client's basic IAC options to satisfy char by
+     * char mode with no echo.  All IAC options will be removed from
+     * the buf and the do_telnetopt variable will be used to track the
+     * state of the width of the IAC information.
+     *
+     * IAC commands come in sets of 3 bytes with the exception of the
+     * "IAC BREAK" command and the double IAC.
+     */
+
+    int i;
+    int j = 0;
+
+    for (i = 0; i < *size; i++) {
+        if (s->do_telnetopt > 1) {
+            if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
+                /* Double IAC means send an IAC */
+                if (j != i)
+                    buf[j] = buf[i];
+                j++;
+                s->do_telnetopt = 1;
+            } else {
+                if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
+                    /* Handle IAC break commands by sending a serial break */
+                    chr->chr_event(s->fd_opaque, CHR_EVENT_BREAK);
+                    s->do_telnetopt++;
+                }
+                s->do_telnetopt++;
+            }
+            if (s->do_telnetopt >= 4) {
+                s->do_telnetopt = 1;
+            }
+        } else {
+            if ((unsigned char)buf[i] == IAC) {
+                s->do_telnetopt = 2;
+            } else {
+                if (j != i)
+                    buf[j] = buf[i];
+                j++;
+            }
+        }
+    }
+    *size = j;
+}
+
+static void tcp_chr_read(void *opaque)
+{
+    CharDriverState *chr = opaque;
+    TCPCharDriver *s = chr->opaque;
+    uint8_t buf[1024];
+    int len, size;
+
+    if (!s->connected || s->max_size <= 0)
+        return;
+    len = sizeof(buf);
+    if (len > s->max_size)
+        len = s->max_size;
+    size = recv(s->fd, buf, len, 0);
+    if (size == 0) {
+        /* connection closed */
+        s->connected = 0;
+        if (s->listen_fd >= 0) {
+            qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
+        }
+        qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
+        closesocket(s->fd);
+        s->fd = -1;
+    } else if (size > 0) {
+        if (s->do_telnetopt)
+            tcp_chr_process_IAC_bytes(chr, s, buf, &size);
+        if (size > 0)
+            s->fd_read(s->fd_opaque, buf, size);
+    }
+}
+
+static void tcp_chr_add_read_handler(CharDriverState *chr,
+                                     IOCanRWHandler *fd_can_read,
+                                    IOReadHandler *fd_read, void *opaque)
+{
+    TCPCharDriver *s = chr->opaque;
+
+    s->fd_can_read = fd_can_read;
+    s->fd_read = fd_read;
+    s->fd_opaque = opaque;
+}
+
+static void tcp_chr_connect(void *opaque)
+{
+    CharDriverState *chr = opaque;
+    TCPCharDriver *s = chr->opaque;
+
+    s->connected = 1;
+    qemu_set_fd_handler2(s->fd, tcp_chr_read_poll,
+                         tcp_chr_read, NULL, chr);
+}
+
+#define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
+static void tcp_chr_telnet_init(int fd)
+{
+    char buf[3];
+    /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
+    IACSET(buf, 0xff, 0xfb, 0x01);  /* IAC WILL ECHO */
+    send(fd, (char *)buf, 3, 0);
+    IACSET(buf, 0xff, 0xfb, 0x03);  /* IAC WILL Suppress go ahead */
+    send(fd, (char *)buf, 3, 0);
+    IACSET(buf, 0xff, 0xfb, 0x00);  /* IAC WILL Binary */
+    send(fd, (char *)buf, 3, 0);
+    IACSET(buf, 0xff, 0xfd, 0x00);  /* IAC DO Binary */
+    send(fd, (char *)buf, 3, 0);
+}
+
+static void tcp_chr_accept(void *opaque)
+{
+    CharDriverState *chr = opaque;
+    TCPCharDriver *s = chr->opaque;
+    struct sockaddr_in saddr;
+    socklen_t len;
+    int fd;
+
+    for(;;) {
+        len = sizeof(saddr);
+        fd = accept(s->listen_fd, (struct sockaddr *)&saddr, &len);
+        if (fd < 0 && errno != EINTR) {
+            return;
+        } else if (fd >= 0) {
+            if (s->do_telnetopt)
+                tcp_chr_telnet_init(fd);
+            break;
+        }
+    }
+    socket_set_nonblock(fd);
+    s->fd = fd;
+    qemu_set_fd_handler(s->listen_fd, NULL, NULL, NULL);
+    tcp_chr_connect(chr);
+}
+
+static void tcp_chr_close(CharDriverState *chr)
+{
+    TCPCharDriver *s = chr->opaque;
+    if (s->fd >= 0)
+        closesocket(s->fd);
+    if (s->listen_fd >= 0)
+        closesocket(s->listen_fd);
+    qemu_free(s);
+}
+
+static CharDriverState *qemu_chr_open_tcp(const char *host_str, 
+                                          int is_telnet)
+{
+    CharDriverState *chr = NULL;
+    TCPCharDriver *s = NULL;
+    int fd = -1, ret, err, val;
+    int is_listen = 0;
+    int is_waitconnect = 1;
+    const char *ptr;
+    struct sockaddr_in saddr;
+
+    if (parse_host_port(&saddr, host_str) < 0)
+        goto fail;
+
+    ptr = host_str;
+    while((ptr = strchr(ptr,','))) {
+        ptr++;
+        if (!strncmp(ptr,"server",6)) {
+            is_listen = 1;
+        } else if (!strncmp(ptr,"nowait",6)) {
+            is_waitconnect = 0;
+        } else {
+            printf("Unknown option: %s\n", ptr);
+            goto fail;
+        }
+    }
+    if (!is_listen)
+        is_waitconnect = 0;
+
+    chr = qemu_mallocz(sizeof(CharDriverState));
+    if (!chr)
+        goto fail;
+    s = qemu_mallocz(sizeof(TCPCharDriver));
+    if (!s)
+        goto fail;
+    
+    fd = socket(PF_INET, SOCK_STREAM, 0);
+    if (fd < 0) 
+        goto fail;
+
+    if (!is_waitconnect)
+        socket_set_nonblock(fd);
+
+    s->connected = 0;
+    s->fd = -1;
+    s->listen_fd = -1;
+    if (is_listen) {
+        /* allow fast reuse */
+        val = 1;
+        setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
+        
+        ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
+        if (ret < 0) 
+            goto fail;
+        ret = listen(fd, 0);
+        if (ret < 0)
+            goto fail;
+        s->listen_fd = fd;
+        qemu_set_fd_handler(s->listen_fd, tcp_chr_accept, NULL, chr);
+        if (is_telnet)
+            s->do_telnetopt = 1;
+    } else {
+        for(;;) {
+            ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
+            if (ret < 0) {
+                err = socket_error();
+                if (err == EINTR || err == EWOULDBLOCK) {
+                } else if (err == EINPROGRESS) {
+                    break;
+                } else {
+                    goto fail;
+                }
+            } else {
+                s->connected = 1;
+                break;
+            }
+        }
+        s->fd = fd;
+        if (s->connected)
+            tcp_chr_connect(chr);
+        else
+            qemu_set_fd_handler(s->fd, NULL, tcp_chr_connect, chr);
+    }
+    
+    chr->opaque = s;
+    chr->chr_write = tcp_chr_write;
+    chr->chr_add_read_handler = tcp_chr_add_read_handler;
+    chr->chr_close = tcp_chr_close;
+    if (is_listen && is_waitconnect) {
+        printf("QEMU waiting for connection on: %s\n", host_str);
+        tcp_chr_accept(chr);
+        socket_set_nonblock(s->listen_fd);
+    }
+
+    return chr;
+ fail:
+    if (fd >= 0)
+        closesocket(fd);
+    qemu_free(s);
+    qemu_free(chr);
+    return NULL;
+}
+
+CharDriverState *qemu_chr_open(const char *filename)
+{
+    const char *p;
+
+    if (!strcmp(filename, "vc")) {
+        return text_console_init(&display_state);
+    } else if (!strcmp(filename, "null")) {
+        return qemu_chr_open_null();
+    } else 
+    if (strstart(filename, "tcp:", &p)) {
+        return qemu_chr_open_tcp(p, 0);
+    } else
+    if (strstart(filename, "telnet:", &p)) {
+        return qemu_chr_open_tcp(p, 1);
+    } else
+    if (strstart(filename, "udp:", &p)) {
+        return qemu_chr_open_udp(p);
+    } else
+#ifndef _WIN32
+    if (strstart(filename, "file:", &p)) {
+        return qemu_chr_open_file_out(p);
+    } else if (strstart(filename, "pipe:", &p)) {
+        return qemu_chr_open_pipe(p);
+    } else if (!strcmp(filename, "pty")) {
+        return qemu_chr_open_pty();
+    } else if (!strcmp(filename, "stdio")) {
+        return qemu_chr_open_stdio();
+    } else 
+#endif
+#if defined(__linux__)
+    if (strstart(filename, "/dev/parport", NULL)) {
+        return qemu_chr_open_pp(filename);
+    } else 
+    if (strstart(filename, "/dev/", NULL)) {
+        return qemu_chr_open_tty(filename);
+    } else 
+#endif
+#ifdef _WIN32
+    if (strstart(filename, "COM", NULL)) {
+        return qemu_chr_open_win(filename);
+    } else
+    if (strstart(filename, "pipe:", &p)) {
+        return qemu_chr_open_win_pipe(p);
+    } else
+    if (strstart(filename, "file:", &p)) {
+        return qemu_chr_open_win_file_out(p);
+    }
+#endif
+    {
+        return NULL;
+    }
+}
+
+void qemu_chr_close(CharDriverState *chr)
+{
+    if (chr->chr_close)
+        chr->chr_close(chr);
+}
+
+/***********************************************************/
+/* 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");
+    }
+}
+
+static int parse_macaddr(uint8_t *macaddr, const char *p)
+{
+    int i;
+    for(i = 0; i < 6; i++) {
+        macaddr[i] = strtol(p, (char **)&p, 16);
+        if (i == 5) {
+            if (*p != '\0') 
+                return -1;
+        } else {
+            if (*p != ':') 
+                return -1;
+            p++;
+        }
+    }
+    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;
+}
+
+int parse_host_src_port(struct sockaddr_in *haddr,
+                        struct sockaddr_in *saddr,
+                        const char *input_str)
+{
+    char *str = strdup(input_str);
+    char *host_str = str;
+    char *src_str;
+    char *ptr;
+
+    /*
+     * Chop off any extra arguments at the end of the string which
+     * would start with a comma, then fill in the src port information
+     * if it was provided else use the "any address" and "any port".
+     */
+    if ((ptr = strchr(str,',')))
+        *ptr = '\0';
+
+    if ((src_str = strchr(input_str,'@'))) {
+        *src_str = '\0';
+        src_str++;
+    }
+
+    if (parse_host_port(haddr, host_str) < 0)
+        goto fail;
+
+    if (!src_str || *src_str == '\0')
+        src_str = ":0";
+
+    if (parse_host_port(saddr, src_str) < 0)
+        goto fail;
+
+    free(str);
+    return(0);
+
+fail:
+    free(str);
+    return -1;
+}
+
+int parse_host_port(struct sockaddr_in *saddr, const char *str)
+{
+    char buf[512];
+    struct hostent *he;
+    const char *p, *r;
+    int port;
+
+    p = str;
+    if (get_str_sep(buf, sizeof(buf), &p, ':') < 0)
+        return -1;
+    saddr->sin_family = AF_INET;
+    if (buf[0] == '\0') {
+        saddr->sin_addr.s_addr = 0;
+    } else {
+        if (isdigit(buf[0])) {
+            if (!inet_aton(buf, &saddr->sin_addr))
+                return -1;
+        } else {
+            if ((he = gethostbyname(buf)) == NULL)
+                return - 1;
+            saddr->sin_addr = *(struct in_addr *)he->h_addr;
+        }
+    }
+    port = strtol(p, (char **)&r, 0);
+    if (r == p)
+        return -1;
+    saddr->sin_port = htons(port);
+    return 0;
+}
+
+/* find or alloc a new VLAN */
+VLANState *qemu_find_vlan(int id)
+{
+    VLANState **pvlan, *vlan;
+    for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
+        if (vlan->id == id)
+            return vlan;
+    }
+    vlan = qemu_mallocz(sizeof(VLANState));
+    if (!vlan)
+        return NULL;
+    vlan->id = id;
+    vlan->next = NULL;
+    pvlan = &first_vlan;
+    while (*pvlan != NULL)
+        pvlan = &(*pvlan)->next;
+    *pvlan = vlan;
+    return vlan;
+}
+
+VLANClientState *qemu_new_vlan_client(VLANState *vlan,
+                                      IOReadHandler *fd_read,
+                                      IOCanRWHandler *fd_can_read,
+                                      void *opaque)
+{
+    VLANClientState *vc, **pvc;
+    vc = qemu_mallocz(sizeof(VLANClientState));
+    if (!vc)
+        return NULL;
+    vc->fd_read = fd_read;
+    vc->fd_can_read = fd_can_read;
+    vc->opaque = opaque;
+    vc->vlan = vlan;
+
+    vc->next = NULL;
+    pvc = &vlan->first_client;
+    while (*pvc != NULL)
+        pvc = &(*pvc)->next;
+    *pvc = vc;
+    return vc;
+}
+
+int qemu_can_send_packet(VLANClientState *vc1)
+{
+    VLANState *vlan = vc1->vlan;
+    VLANClientState *vc;
+
+    for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
+        if (vc != vc1) {
+            if (vc->fd_can_read && !vc->fd_can_read(vc->opaque))
+                return 0;
+        }
+    }
+    return 1;
+}
+
+void qemu_send_packet(VLANClientState *vc1, const uint8_t *buf, int size)
+{
+    VLANState *vlan = vc1->vlan;
+    VLANClientState *vc;
+
+#if 0
+    printf("vlan %d send:\n", vlan->id);
+    hex_dump(stdout, buf, size);
+#endif
+    for(vc = vlan->first_client; vc != NULL; vc = vc->next) {
+        if (vc != vc1) {
+            vc->fd_read(vc->opaque, buf, size);
+        }
+    }
+}
+
+#if defined(CONFIG_SLIRP)
+
+/* slirp network adapter */
+
+static int slirp_inited;
+static VLANClientState *slirp_vc;
+
+int slirp_can_output(void)
+{
+    return !slirp_vc || qemu_can_send_packet(slirp_vc);
+}
+
+void slirp_output(const uint8_t *pkt, int pkt_len)
+{
+#if 0
+    printf("slirp output:\n");
+    hex_dump(stdout, pkt, pkt_len);
+#endif
+    if (!slirp_vc)
+        return;
+    qemu_send_packet(slirp_vc, pkt, pkt_len);
+}
+
+static void slirp_receive(void *opaque, const uint8_t *buf, int size)
+{
+#if 0
+    printf("slirp input:\n");
+    hex_dump(stdout, buf, size);
+#endif
+    slirp_input(buf, size);
+}
+
+static int net_slirp_init(VLANState *vlan)
+{
+    if (!slirp_inited) {
+        slirp_inited = 1;
+        slirp_init();
+    }
+    slirp_vc = qemu_new_vlan_client(vlan, 
+                                    slirp_receive, NULL, NULL);
+    snprintf(slirp_vc->info_str, sizeof(slirp_vc->info_str), "user redirector");
+    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"
+            "private dir=%s\n"
+            "smb ports=0\n"
+            "socket address=127.0.0.1\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,
+            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)
+
+typedef struct TAPState {
+    VLANClientState *vc;
+    int fd;
+} TAPState;
+
+static void tap_receive(void *opaque, const uint8_t *buf, int size)
+{
+    TAPState *s = opaque;
+    int ret;
+    for(;;) {
+        ret = write(s->fd, buf, size);
+        if (ret < 0 && (errno == EINTR || errno == EAGAIN)) {
+        } else {
+            break;
+        }
+    }
+}
+
+static void tap_send(void *opaque)
+{
+    TAPState *s = opaque;
+    uint8_t buf[4096];
+    int size;
+
+    size = read(s->fd, buf, sizeof(buf));
+    if (size > 0) {
+        qemu_send_packet(s->vc, buf, size);
+    }
+}
+
+/* fd support */
+
+static TAPState *net_tap_fd_init(VLANState *vlan, int fd)
+{
+    TAPState *s;
+
+    s = qemu_mallocz(sizeof(TAPState));
+    if (!s)
+        return NULL;
+    s->fd = fd;
+    s->vc = qemu_new_vlan_client(vlan, tap_receive, NULL, s);
+    qemu_set_fd_handler(s->fd, tap_send, NULL, s);
+    snprintf(s->vc->info_str, sizeof(s->vc->info_str), "tap: fd=%d", fd);
+    return s;
+}
+
+#ifdef _BSD
+static int tap_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;
+}
+#elif defined(__sun__)
+static int tap_open(char *ifname, int ifname_size)
+{
+    fprintf(stderr, "warning: tap_open not yet implemented\n");
+    return -1;
+}
+#else
+static int tap_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;
+    if (ifname[0] != '\0')
+        pstrcpy(ifr.ifr_name, IFNAMSIZ, ifname);
+    else
+        pstrcpy(ifr.ifr_name, IFNAMSIZ, "tap%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;
+    }
+    pstrcpy(ifname, ifname_size, ifr.ifr_name);
+    fcntl(fd, F_SETFL, O_NONBLOCK);
+    return fd;
+}
+#endif
+
+static int net_tap_init(VLANState *vlan, const char *ifname1,
+                        const char *setup_script)
+{
+    TAPState *s;
+    int pid, status, fd;
+    char *args[3];
+    char **parg;
+    char ifname[128];
+
+    if (ifname1 != NULL)
+        pstrcpy(ifname, sizeof(ifname), ifname1);
+    else
+        ifname[0] = '\0';
+    fd = tap_open(ifname, sizeof(ifname));
+    if (fd < 0)
+        return -1;
+
+    if (!setup_script)
+        setup_script = "";
+    if (setup_script[0] != '\0') {
+        /* try to launch network init script */
+        pid = fork();
+        if (pid >= 0) {
+            if (pid == 0) {
+                parg = args;
+                *parg++ = (char *)setup_script;
+                *parg++ = ifname;
+                *parg++ = NULL;
+                execv(setup_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",
+                        setup_script);
+                return -1;
+            }
+        }
+    }
+    s = net_tap_fd_init(vlan, fd);
+    if (!s)
+        return -1;
+    snprintf(s->vc->info_str, sizeof(s->vc->info_str), 
+             "tap: ifname=%s setup_script=%s", ifname, setup_script);
+    return 0;
+}
+
+#endif /* !_WIN32 */
+
+/* network connection */
+typedef struct NetSocketState {
+    VLANClientState *vc;
+    int fd;
+    int state; /* 0 = getting length, 1 = getting data */
+    int index;
+    int packet_len;
+    uint8_t buf[4096];
+    struct sockaddr_in dgram_dst; /* contains inet host and port destination iff connectionless (SOCK_DGRAM) */
+} NetSocketState;
+
+typedef struct NetSocketListenState {
+    VLANState *vlan;
+    int fd;
+} NetSocketListenState;
+
+/* XXX: we consider we can send the whole packet without blocking */
+static void net_socket_receive(void *opaque, const uint8_t *buf, int size)
+{
+    NetSocketState *s = opaque;
+    uint32_t len;
+    len = htonl(size);
+
+    send_all(s->fd, (const uint8_t *)&len, sizeof(len));
+    send_all(s->fd, buf, size);
+}
+
+static void net_socket_receive_dgram(void *opaque, const uint8_t *buf, int size)
+{
+    NetSocketState *s = opaque;
+    sendto(s->fd, buf, size, 0, 
+           (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
+}
+
+static void net_socket_send(void *opaque)
+{
+    NetSocketState *s = opaque;
+    int l, size, err;
+    uint8_t buf1[4096];
+    const uint8_t *buf;
+
+    size = recv(s->fd, buf1, sizeof(buf1), 0);
+    if (size < 0) {
+        err = socket_error();
+        if (err != EWOULDBLOCK) 
+            goto eoc;
+    } else if (size == 0) {
+        /* end of connection */
+    eoc:
+        qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
+        closesocket(s->fd);
+        return;
+    }
+    buf = buf1;
+    while (size > 0) {
+        /* reassemble a packet from the network */
+        switch(s->state) {
+        case 0:
+            l = 4 - s->index;
+            if (l > size)
+                l = size;
+            memcpy(s->buf + s->index, buf, l);
+            buf += l;
+            size -= l;
+            s->index += l;
+            if (s->index == 4) {
+                /* got length */
+                s->packet_len = ntohl(*(uint32_t *)s->buf);
+                s->index = 0;
+                s->state = 1;
+            }
+            break;
+        case 1:
+            l = s->packet_len - s->index;
+            if (l > size)
+                l = size;
+            memcpy(s->buf + s->index, buf, l);
+            s->index += l;
+            buf += l;
+            size -= l;
+            if (s->index >= s->packet_len) {
+                qemu_send_packet(s->vc, s->buf, s->packet_len);
+                s->index = 0;
+                s->state = 0;
+            }
+            break;
+        }
+    }
+}
+
+static void net_socket_send_dgram(void *opaque)
+{
+    NetSocketState *s = opaque;
+    int size;
+
+    size = recv(s->fd, s->buf, sizeof(s->buf), 0);
+    if (size < 0) 
+        return;
+    if (size == 0) {
+        /* end of connection */
+        qemu_set_fd_handler(s->fd, NULL, NULL, NULL);
+        return;
+    }
+    qemu_send_packet(s->vc, s->buf, size);
+}
+
+static int net_socket_mcast_create(struct sockaddr_in *mcastaddr)
+{
+    struct ip_mreq imr;
+    int fd;
+    int val, ret;
+    if (!IN_MULTICAST(ntohl(mcastaddr->sin_addr.s_addr))) {
+	fprintf(stderr, "qemu: error: specified mcastaddr \"%s\" (0x%08x) does not contain a multicast address\n",
+		inet_ntoa(mcastaddr->sin_addr), 
+                (int)ntohl(mcastaddr->sin_addr.s_addr));
+	return -1;
+
+    }
+    fd = socket(PF_INET, SOCK_DGRAM, 0);
+    if (fd < 0) {
+        perror("socket(PF_INET, SOCK_DGRAM)");
+        return -1;
+    }
+
+    val = 1;
+    ret=setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, 
+                   (const char *)&val, sizeof(val));
+    if (ret < 0) {
+	perror("setsockopt(SOL_SOCKET, SO_REUSEADDR)");
+	goto fail;
+    }
+
+    ret = bind(fd, (struct sockaddr *)mcastaddr, sizeof(*mcastaddr));
+    if (ret < 0) {
+        perror("bind");
+        goto fail;
+    }
+    
+    /* Add host to multicast group */
+    imr.imr_multiaddr = mcastaddr->sin_addr;
+    imr.imr_interface.s_addr = htonl(INADDR_ANY);
+
+    ret = setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, 
+                     (const char *)&imr, sizeof(struct ip_mreq));
+    if (ret < 0) {
+	perror("setsockopt(IP_ADD_MEMBERSHIP)");
+	goto fail;
+    }
+
+    /* Force mcast msgs to loopback (eg. several QEMUs in same host */
+    val = 1;
+    ret=setsockopt(fd, IPPROTO_IP, IP_MULTICAST_LOOP, 
+                   (const char *)&val, sizeof(val));
+    if (ret < 0) {
+	perror("setsockopt(SOL_IP, IP_MULTICAST_LOOP)");
+	goto fail;
+    }
+
+    socket_set_nonblock(fd);
+    return fd;
+fail:
+    if (fd >= 0) 
+        closesocket(fd);
+    return -1;
+}
+
+static NetSocketState *net_socket_fd_init_dgram(VLANState *vlan, int fd, 
+                                          int is_connected)
+{
+    struct sockaddr_in saddr;
+    int newfd;
+    socklen_t saddr_len;
+    NetSocketState *s;
+
+    /* fd passed: multicast: "learn" dgram_dst address from bound address and save it
+     * Because this may be "shared" socket from a "master" process, datagrams would be recv() 
+     * by ONLY ONE process: we must "clone" this dgram socket --jjo
+     */
+
+    if (is_connected) {
+	if (getsockname(fd, (struct sockaddr *) &saddr, &saddr_len) == 0) {
+	    /* must be bound */
+	    if (saddr.sin_addr.s_addr==0) {
+		fprintf(stderr, "qemu: error: init_dgram: fd=%d unbound, cannot setup multicast dst addr\n",
+			fd);
+		return NULL;
+	    }
+	    /* clone dgram socket */
+	    newfd = net_socket_mcast_create(&saddr);
+	    if (newfd < 0) {
+		/* error already reported by net_socket_mcast_create() */
+		close(fd);
+		return NULL;
+	    }
+	    /* clone newfd to fd, close newfd */
+	    dup2(newfd, fd);
+	    close(newfd);
+	
+	} else {
+	    fprintf(stderr, "qemu: error: init_dgram: fd=%d failed getsockname(): %s\n",
+		    fd, strerror(errno));
+	    return NULL;
+	}
+    }
+
+    s = qemu_mallocz(sizeof(NetSocketState));
+    if (!s)
+        return NULL;
+    s->fd = fd;
+
+    s->vc = qemu_new_vlan_client(vlan, net_socket_receive_dgram, NULL, s);
+    qemu_set_fd_handler(s->fd, net_socket_send_dgram, NULL, s);
+
+    /* mcast: save bound address as dst */
+    if (is_connected) s->dgram_dst=saddr;
+
+    snprintf(s->vc->info_str, sizeof(s->vc->info_str),
+	    "socket: fd=%d (%s mcast=%s:%d)", 
+	    fd, is_connected? "cloned" : "",
+	    inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
+    return s;
+}
+
+static void net_socket_connect(void *opaque)
+{
+    NetSocketState *s = opaque;
+    qemu_set_fd_handler(s->fd, net_socket_send, NULL, s);
+}
+
+static NetSocketState *net_socket_fd_init_stream(VLANState *vlan, int fd, 
+                                          int is_connected)
+{
+    NetSocketState *s;
+    s = qemu_mallocz(sizeof(NetSocketState));
+    if (!s)
+        return NULL;
+    s->fd = fd;
+    s->vc = qemu_new_vlan_client(vlan, 
+                                 net_socket_receive, NULL, s);
+    snprintf(s->vc->info_str, sizeof(s->vc->info_str),
+             "socket: fd=%d", fd);
+    if (is_connected) {
+        net_socket_connect(s);
+    } else {
+        qemu_set_fd_handler(s->fd, NULL, net_socket_connect, s);
+    }
+    return s;
+}
+
+static NetSocketState *net_socket_fd_init(VLANState *vlan, int fd, 
+                                          int is_connected)
+{
+    int so_type=-1, optlen=sizeof(so_type);
+
+    if(getsockopt(fd, SOL_SOCKET, SO_TYPE, (char *)&so_type, &optlen)< 0) {
+	fprintf(stderr, "qemu: error: setsockopt(SO_TYPE) for fd=%d failed\n", fd);
+	return NULL;
+    }
+    switch(so_type) {
+    case SOCK_DGRAM:
+        return net_socket_fd_init_dgram(vlan, fd, is_connected);
+    case SOCK_STREAM:
+        return net_socket_fd_init_stream(vlan, fd, is_connected);
+    default:
+        /* who knows ... this could be a eg. a pty, do warn and continue as stream */
+        fprintf(stderr, "qemu: warning: socket type=%d for fd=%d is not SOCK_DGRAM or SOCK_STREAM\n", so_type, fd);
+        return net_socket_fd_init_stream(vlan, fd, is_connected);
+    }
+    return NULL;
+}
+
+static void net_socket_accept(void *opaque)
+{
+    NetSocketListenState *s = opaque;    
+    NetSocketState *s1;
+    struct sockaddr_in saddr;
+    socklen_t len;
+    int fd;
+
+    for(;;) {
+        len = sizeof(saddr);
+        fd = accept(s->fd, (struct sockaddr *)&saddr, &len);
+        if (fd < 0 && errno != EINTR) {
+            return;
+        } else if (fd >= 0) {
+            break;
+        }
+    }
+    s1 = net_socket_fd_init(s->vlan, fd, 1); 
+    if (!s1) {
+        closesocket(fd);
+    } else {
+        snprintf(s1->vc->info_str, sizeof(s1->vc->info_str),
+                 "socket: connection from %s:%d", 
+                 inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
+    }
+}
+
+static int net_socket_listen_init(VLANState *vlan, const char *host_str)
+{
+    NetSocketListenState *s;
+    int fd, val, ret;
+    struct sockaddr_in saddr;
+
+    if (parse_host_port(&saddr, host_str) < 0)
+        return -1;
+    
+    s = qemu_mallocz(sizeof(NetSocketListenState));
+    if (!s)
+        return -1;
+
+    fd = socket(PF_INET, SOCK_STREAM, 0);
+    if (fd < 0) {
+        perror("socket");
+        return -1;
+    }
+    socket_set_nonblock(fd);
+
+    /* allow fast reuse */
+    val = 1;
+    setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
+    
+    ret = bind(fd, (struct sockaddr *)&saddr, sizeof(saddr));
+    if (ret < 0) {
+        perror("bind");
+        return -1;
+    }
+    ret = listen(fd, 0);
+    if (ret < 0) {
+        perror("listen");
+        return -1;
+    }
+    s->vlan = vlan;
+    s->fd = fd;
+    qemu_set_fd_handler(fd, net_socket_accept, NULL, s);
+    return 0;
+}
+
+static int net_socket_connect_init(VLANState *vlan, const char *host_str)
+{
+    NetSocketState *s;
+    int fd, connected, ret, err;
+    struct sockaddr_in saddr;
+
+    if (parse_host_port(&saddr, host_str) < 0)
+        return -1;
+
+    fd = socket(PF_INET, SOCK_STREAM, 0);
+    if (fd < 0) {
+        perror("socket");
+        return -1;
+    }
+    socket_set_nonblock(fd);
+
+    connected = 0;
+    for(;;) {
+        ret = connect(fd, (struct sockaddr *)&saddr, sizeof(saddr));
+        if (ret < 0) {
+            err = socket_error();
+            if (err == EINTR || err == EWOULDBLOCK) {
+            } else if (err == EINPROGRESS) {
+                break;
+            } else {
+                perror("connect");
+                closesocket(fd);
+                return -1;
+            }
+        } else {
+            connected = 1;
+            break;
+        }
+    }
+    s = net_socket_fd_init(vlan, fd, connected);
+    if (!s)
+        return -1;
+    snprintf(s->vc->info_str, sizeof(s->vc->info_str),
+             "socket: connect to %s:%d", 
+             inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
+    return 0;
+}
+
+static int net_socket_mcast_init(VLANState *vlan, const char *host_str)
+{
+    NetSocketState *s;
+    int fd;
+    struct sockaddr_in saddr;
+
+    if (parse_host_port(&saddr, host_str) < 0)
+        return -1;
+
+
+    fd = net_socket_mcast_create(&saddr);
+    if (fd < 0)
+	return -1;
+
+    s = net_socket_fd_init(vlan, fd, 0);
+    if (!s)
+        return -1;
+
+    s->dgram_dst = saddr;
+    
+    snprintf(s->vc->info_str, sizeof(s->vc->info_str),
+             "socket: mcast=%s:%d", 
+             inet_ntoa(saddr.sin_addr), ntohs(saddr.sin_port));
+    return 0;
+
+}
+
+static int get_param_value(char *buf, int buf_size,
+                           const char *tag, const char *str)
+{
+    const char *p;
+    char *q;
+    char option[128];
+
+    p = str;
+    for(;;) {
+        q = option;
+        while (*p != '\0' && *p != '=') {
+            if ((q - option) < sizeof(option) - 1)
+                *q++ = *p;
+            p++;
+        }
+        *q = '\0';
+        if (*p != '=')
+            break;
+        p++;
+        if (!strcmp(tag, option)) {
+            q = buf;
+            while (*p != '\0' && *p != ',') {
+                if ((q - buf) < buf_size - 1)
+                    *q++ = *p;
+                p++;
+            }
+            *q = '\0';
+            return q - buf;
+        } else {
+            while (*p != '\0' && *p != ',') {
+                p++;
+            }
+        }
+        if (*p != ',')
+            break;
+        p++;
+    }
+    return 0;
+}
+
+int net_client_init(const char *str)
+{
+    const char *p;
+    char *q;
+    char device[64];
+    char buf[1024];
+    int vlan_id, ret;
+    VLANState *vlan;
+
+    p = str;
+    q = device;
+    while (*p != '\0' && *p != ',') {
+        if ((q - device) < sizeof(device) - 1)
+            *q++ = *p;
+        p++;
+    }
+    *q = '\0';
+    if (*p == ',')
+        p++;
+    vlan_id = 0;
+    if (get_param_value(buf, sizeof(buf), "vlan", p)) {
+        vlan_id = strtol(buf, NULL, 0);
+    }
+    vlan = qemu_find_vlan(vlan_id);
+    if (!vlan) {
+        fprintf(stderr, "Could not create vlan %d\n", vlan_id);
+        return -1;
+    }
+    if (!strcmp(device, "nic")) {
+        NICInfo *nd;
+        uint8_t *macaddr;
+
+        if (nb_nics >= MAX_NICS) {
+            fprintf(stderr, "Too Many NICs\n");
+            return -1;
+        }
+        nd = &nd_table[nb_nics];
+        macaddr = nd->macaddr;
+        macaddr[0] = 0x52;
+        macaddr[1] = 0x54;
+        macaddr[2] = 0x00;
+        macaddr[3] = 0x12;
+        macaddr[4] = 0x34;
+        macaddr[5] = 0x56 + nb_nics;
+
+        if (get_param_value(buf, sizeof(buf), "macaddr", p)) {
+            if (parse_macaddr(macaddr, buf) < 0) {
+                fprintf(stderr, "invalid syntax for ethernet address\n");
+                return -1;
+            }
+        }
+        if (get_param_value(buf, sizeof(buf), "model", p)) {
+            nd->model = strdup(buf);
+        }
+        nd->vlan = vlan;
+        nb_nics++;
+        ret = 0;
+    } else
+    if (!strcmp(device, "none")) {
+        /* does nothing. It is needed to signal that no network cards
+           are wanted */
+        ret = 0;
+    } else
+#ifdef CONFIG_SLIRP
+    if (!strcmp(device, "user")) {
+        if (get_param_value(buf, sizeof(buf), "hostname", p)) {
+            pstrcpy(slirp_hostname, sizeof(slirp_hostname), buf);
+        }
+        ret = net_slirp_init(vlan);
+    } else
+#endif
+#ifdef _WIN32
+    if (!strcmp(device, "tap")) {
+        char ifname[64];
+        if (get_param_value(ifname, sizeof(ifname), "ifname", p) <= 0) {
+            fprintf(stderr, "tap: no interface name\n");
+            return -1;
+        }
+        ret = tap_win32_init(vlan, ifname);
+    } else
+#else
+    if (!strcmp(device, "tap")) {
+        char ifname[64];
+        char setup_script[1024];
+        int fd;
+        if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
+            fd = strtol(buf, NULL, 0);
+            ret = -1;
+            if (net_tap_fd_init(vlan, fd))
+                ret = 0;
+        } else {
+            get_param_value(ifname, sizeof(ifname), "ifname", p);
+            if (get_param_value(setup_script, sizeof(setup_script), "script", p) == 0) {
+                pstrcpy(setup_script, sizeof(setup_script), DEFAULT_NETWORK_SCRIPT);
+            }
+            ret = net_tap_init(vlan, ifname, setup_script);
+        }
+    } else
+#endif
+    if (!strcmp(device, "socket")) {
+        if (get_param_value(buf, sizeof(buf), "fd", p) > 0) {
+            int fd;
+            fd = strtol(buf, NULL, 0);
+            ret = -1;
+            if (net_socket_fd_init(vlan, fd, 1))
+                ret = 0;
+        } else if (get_param_value(buf, sizeof(buf), "listen", p) > 0) {
+            ret = net_socket_listen_init(vlan, buf);
+        } else if (get_param_value(buf, sizeof(buf), "connect", p) > 0) {
+            ret = net_socket_connect_init(vlan, buf);
+        } else if (get_param_value(buf, sizeof(buf), "mcast", p) > 0) {
+            ret = net_socket_mcast_init(vlan, buf);
+        } else {
+            fprintf(stderr, "Unknown socket options: %s\n", p);
+            return -1;
+        }
+    } else
+    {
+        fprintf(stderr, "Unknown network device: %s\n", device);
+        return -1;
+    }
+    if (ret < 0) {
+        fprintf(stderr, "Could not initialize device '%s'\n", device);
+    }
+    
+    return ret;
+}
+
+void do_info_network(void)
+{
+    VLANState *vlan;
+    VLANClientState *vc;
+
+    for(vlan = first_vlan; vlan != NULL; vlan = vlan->next) {
+        term_printf("VLAN %d devices:\n", vlan->id);
+        for(vc = vlan->first_client; vc != NULL; vc = vc->next)
+            term_printf("  %s\n", vc->info_str);
+    }
+}
+ 
+/***********************************************************/
+/* USB devices */
+
+static USBPort *used_usb_ports;
+static USBPort *free_usb_ports;
+
+/* ??? Maybe change this to register a hub to keep track of the topology.  */
+void qemu_register_usb_port(USBPort *port, void *opaque, int index,
+                            usb_attachfn attach)
+{
+    port->opaque = opaque;
+    port->index = index;
+    port->attach = attach;
+    port->next = free_usb_ports;
+    free_usb_ports = port;
+}
+
+static int usb_device_add(const char *devname)
+{
+    const char *p;
+    USBDevice *dev;
+    USBPort *port;
+
+    if (!free_usb_ports)
+        return -1;
+
+    if (strstart(devname, "host:", &p)) {
+        dev = usb_host_device_open(p);
+    } else if (!strcmp(devname, "mouse")) {
+        dev = usb_mouse_init();
+    } else if (!strcmp(devname, "tablet")) {
+	dev = usb_tablet_init();
+    } else if (strstart(devname, "disk:", &p)) {
+        dev = usb_msd_init(p);
+    } else {
+        return -1;
+    }
+    if (!dev)
+        return -1;
+
+    /* Find a USB port to add the device to.  */
+    port = free_usb_ports;
+    if (!port->next) {
+        USBDevice *hub;
+
+        /* Create a new hub and chain it on.  */
+        free_usb_ports = NULL;
+        port->next = used_usb_ports;
+        used_usb_ports = port;
+
+        hub = usb_hub_init(VM_USB_HUB_SIZE);
+        usb_attach(port, hub);
+        port = free_usb_ports;
+    }
+
+    free_usb_ports = port->next;
+    port->next = used_usb_ports;
+    used_usb_ports = port;
+    usb_attach(port, dev);
+    return 0;
+}
+
+static int usb_device_del(const char *devname)
+{
+    USBPort *port;
+    USBPort **lastp;
+    USBDevice *dev;
+    int bus_num, addr;
+    const char *p;
+
+    if (!used_usb_ports)
+        return -1;
+
+    p = strchr(devname, '.');
+    if (!p) 
+        return -1;
+    bus_num = strtoul(devname, NULL, 0);
+    addr = strtoul(p + 1, NULL, 0);
+    if (bus_num != 0)
+        return -1;
+
+    lastp = &used_usb_ports;
+    port = used_usb_ports;
+    while (port && port->dev->addr != addr) {
+        lastp = &port->next;
+        port = port->next;
+    }
+
+    if (!port)
+        return -1;
+
+    dev = port->dev;
+    *lastp = port->next;
+    usb_attach(port, NULL);
+    dev->handle_destroy(dev);
+    port->next = free_usb_ports;
+    free_usb_ports = port;
+    return 0;
+}
+
+void do_usb_add(const char *devname)
+{
+    int ret;
+    ret = usb_device_add(devname);
+    if (ret < 0) 
+        term_printf("Could not add USB device '%s'\n", devname);
+}
+
+void do_usb_del(const char *devname)
+{
+    int ret;
+    ret = usb_device_del(devname);
+    if (ret < 0) 
+        term_printf("Could not remove USB device '%s'\n", devname);
+}
+
+void usb_info(void)
+{
+    USBDevice *dev;
+    USBPort *port;
+    const char *speed_str;
+
+    if (!usb_enabled) {
+        term_printf("USB support not enabled\n");
+        return;
+    }
+
+    for (port = used_usb_ports; port; port = port->next) {
+        dev = port->dev;
+        if (!dev)
+            continue;
+        switch(dev->speed) {
+        case USB_SPEED_LOW: 
+            speed_str = "1.5"; 
+            break;
+        case USB_SPEED_FULL: 
+            speed_str = "12"; 
+            break;
+        case USB_SPEED_HIGH: 
+            speed_str = "480"; 
+            break;
+        default:
+            speed_str = "?"; 
+            break;
+        }
+        term_printf("  Device %d.%d, Speed %s Mb/s, Product %s\n", 
+                    0, dev->addr, speed_str, dev->devname);
+    }
+}
+
+/***********************************************************/
+/* pid file */
+
+static char *pid_filename;
+
+/* Remove PID file. Called on normal exit */
+
+static void remove_pidfile(void) 
+{
+    unlink (pid_filename);
+}
+
+static void create_pidfile(const char *filename)
+{
+    struct stat pidstat;
+    FILE *f;
+
+    /* Try to write our PID to the named file */
+    if (stat(filename, &pidstat) < 0) {
+        if (errno == ENOENT) {
+            if ((f = fopen (filename, "w")) == NULL) {
+                perror("Opening pidfile");
+                exit(1);
+            }
+            fprintf(f, "%d\n", getpid());
+            fclose(f);
+            pid_filename = qemu_strdup(filename);
+            if (!pid_filename) {
+                fprintf(stderr, "Could not save PID filename");
+                exit(1);
+            }
+            atexit(remove_pidfile);
+        }
+    } else {
+        fprintf(stderr, "%s already exists. Remove it and try again.\n", 
+                filename);
+        exit(1);
+    }
+}
+
+/***********************************************************/
+/* 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_hw_update();
+}
+
+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;
+}
+
+/***********************************************************/
+/* I/O handling */
+
+#define MAX_IO_HANDLERS 64
+
+typedef struct IOHandlerRecord {
+    int fd;
+    IOCanRWHandler *fd_read_poll;
+    IOHandler *fd_read;
+    IOHandler *fd_write;
+    void *opaque;
+    /* temporary data */
+    struct pollfd *ufd;
+    struct IOHandlerRecord *next;
+} IOHandlerRecord;
+
+static IOHandlerRecord *first_io_handler;
+
+/* XXX: fd_read_poll should be suppressed, but an API change is
+   necessary in the character devices to suppress fd_can_read(). */
+int qemu_set_fd_handler2(int fd, 
+                         IOCanRWHandler *fd_read_poll, 
+                         IOHandler *fd_read, 
+                         IOHandler *fd_write, 
+                         void *opaque)
+{
+    IOHandlerRecord **pioh, *ioh;
+
+    if (!fd_read && !fd_write) {
+        pioh = &first_io_handler;
+        for(;;) {
+            ioh = *pioh;
+            if (ioh == NULL)
+                break;
+            if (ioh->fd == fd) {
+                *pioh = ioh->next;
+                qemu_free(ioh);
+                break;
+            }
+            pioh = &ioh->next;
+        }
+    } else {
+        for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
+            if (ioh->fd == fd)
+                goto found;
+        }
+        ioh = qemu_mallocz(sizeof(IOHandlerRecord));
+        if (!ioh)
+            return -1;
+        ioh->next = first_io_handler;
+        first_io_handler = ioh;
+    found:
+        ioh->fd = fd;
+        ioh->fd_read_poll = fd_read_poll;
+        ioh->fd_read = fd_read;
+        ioh->fd_write = fd_write;
+        ioh->opaque = opaque;
+    }
+    return 0;
+}
+
+int qemu_set_fd_handler(int fd, 
+                        IOHandler *fd_read, 
+                        IOHandler *fd_write, 
+                        void *opaque)
+{
+    return qemu_set_fd_handler2(fd, NULL, fd_read, fd_write, opaque);
+}
+
+/***********************************************************/
+/* Polling handling */
+
+typedef struct PollingEntry {
+    PollingFunc *func;
+    void *opaque;
+    struct PollingEntry *next;
+} PollingEntry;
+
+static PollingEntry *first_polling_entry;
+
+int qemu_add_polling_cb(PollingFunc *func, void *opaque)
+{
+    PollingEntry **ppe, *pe;
+    pe = qemu_mallocz(sizeof(PollingEntry));
+    if (!pe)
+        return -1;
+    pe->func = func;
+    pe->opaque = opaque;
+    for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next);
+    *ppe = pe;
+    return 0;
+}
+
+void qemu_del_polling_cb(PollingFunc *func, void *opaque)
+{
+    PollingEntry **ppe, *pe;
+    for(ppe = &first_polling_entry; *ppe != NULL; ppe = &(*ppe)->next) {
+        pe = *ppe;
+        if (pe->func == func && pe->opaque == opaque) {
+            *ppe = pe->next;
+            qemu_free(pe);
+            break;
+        }
+    }
+}
+
+#ifdef _WIN32
+/***********************************************************/
+/* Wait objects support */
+typedef struct WaitObjects {
+    int num;
+    HANDLE events[MAXIMUM_WAIT_OBJECTS + 1];
+    WaitObjectFunc *func[MAXIMUM_WAIT_OBJECTS + 1];
+    void *opaque[MAXIMUM_WAIT_OBJECTS + 1];
+} WaitObjects;
+
+static WaitObjects wait_objects = {0};
+    
+int qemu_add_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
+{
+    WaitObjects *w = &wait_objects;
+
+    if (w->num >= MAXIMUM_WAIT_OBJECTS)
+        return -1;
+    w->events[w->num] = handle;
+    w->func[w->num] = func;
+    w->opaque[w->num] = opaque;
+    w->num++;
+    return 0;
+}
+
+void qemu_del_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque)
+{
+    int i, found;
+    WaitObjects *w = &wait_objects;
+
+    found = 0;
+    for (i = 0; i < w->num; i++) {
+        if (w->events[i] == handle)
+            found = 1;
+        if (found) {
+            w->events[i] = w->events[i + 1];
+            w->func[i] = w->func[i + 1];
+            w->opaque[i] = w->opaque[i + 1];
+        }            
+    }
+    if (found)
+        w->num--;
+}
+#endif
+
+/***********************************************************/
+/* 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(;;) {
+        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_betl(f, 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 = qemu_get_betl(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, fpregs_format;
+    uint32_t hflags;
+    int i;
+    
+    for(i = 0; i < CPU_NB_REGS; i++)
+        qemu_put_betls(f, &env->regs[i]);
+    qemu_put_betls(f, &env->eip);
+    qemu_put_betls(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 = 0; i < 8; i++) {
+        fptag |= ((!env->fptags[i]) << i);
+    }
+    
+    qemu_put_be16s(f, &fpuc);
+    qemu_put_be16s(f, &fpus);
+    qemu_put_be16s(f, &fptag);
+
+#ifdef USE_X86LDOUBLE
+    fpregs_format = 0;
+#else
+    fpregs_format = 1;
+#endif
+    qemu_put_be16s(f, &fpregs_format);
+    
+    for(i = 0; i < 8; i++) {
+#ifdef USE_X86LDOUBLE
+        {
+            uint64_t mant;
+            uint16_t exp;
+            /* we save the real CPU data (in case of MMX usage only 'mant'
+               contains the MMX register */
+            cpu_get_fp80(&mant, &exp, env->fpregs[i].d);
+            qemu_put_be64(f, mant);
+            qemu_put_be16(f, exp);
+        }
+#else
+        /* if we use doubles for float emulation, we save the doubles to
+           avoid losing information in case of MMX usage. It can give
+           problems if the image is restored on a CPU where long
+           doubles are used instead. */
+        qemu_put_be64(f, env->fpregs[i].mmx.MMX_Q(0));
+#endif
+    }
+
+    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_betls(f, &env->cr[0]);
+    qemu_put_betls(f, &env->cr[2]);
+    qemu_put_betls(f, &env->cr[3]);
+    qemu_put_betls(f, &env->cr[4]);
+    
+    for(i = 0; i < 8; i++)
+        qemu_put_betls(f, &env->dr[i]);
+
+    /* MMU */
+    qemu_put_be32s(f, &env->a20_mask);
+
+    /* XMM */
+    qemu_put_be32s(f, &env->mxcsr);
+    for(i = 0; i < CPU_NB_REGS; i++) {
+        qemu_put_be64s(f, &env->xmm_regs[i].XMM_Q(0));
+        qemu_put_be64s(f, &env->xmm_regs[i].XMM_Q(1));
+    }
+
+#ifdef TARGET_X86_64
+    qemu_put_be64s(f, &env->efer);
+    qemu_put_be64s(f, &env->star);
+    qemu_put_be64s(f, &env->lstar);
+    qemu_put_be64s(f, &env->cstar);
+    qemu_put_be64s(f, &env->fmask);
+    qemu_put_be64s(f, &env->kernelgsbase);
+#endif
+}
+
+#ifdef USE_X86LDOUBLE
+/* XXX: add that in a FPU generic layer */
+union x86_longdouble {
+    uint64_t mant;
+    uint16_t exp;
+};
+
+#define MANTD1(fp)	(fp & ((1LL << 52) - 1))
+#define EXPBIAS1 1023
+#define EXPD1(fp)	((fp >> 52) & 0x7FF)
+#define SIGND1(fp)	((fp >> 32) & 0x80000000)
+
+static void fp64_to_fp80(union x86_longdouble *p, uint64_t temp)
+{
+    int e;
+    /* mantissa */
+    p->mant = (MANTD1(temp) << 11) | (1LL << 63);
+    /* exponent + sign */
+    e = EXPD1(temp) - EXPBIAS1 + 16383;
+    e |= SIGND1(temp) >> 16;
+    p->exp = e;
+}
+#endif
+
+int cpu_load(QEMUFile *f, void *opaque, int version_id)
+{
+    CPUState *env = opaque;
+    int i, guess_mmx;
+    uint32_t hflags;
+    uint16_t fpus, fpuc, fptag, fpregs_format;
+
+    if (version_id != 3)
+        return -EINVAL;
+    for(i = 0; i < CPU_NB_REGS; i++)
+        qemu_get_betls(f, &env->regs[i]);
+    qemu_get_betls(f, &env->eip);
+    qemu_get_betls(f, &env->eflags);
+    qemu_get_be32s(f, &hflags);
+
+    qemu_get_be16s(f, &fpuc);
+    qemu_get_be16s(f, &fpus);
+    qemu_get_be16s(f, &fptag);
+    qemu_get_be16s(f, &fpregs_format);
+    
+    /* NOTE: we cannot always restore the FPU state if the image come
+       from a host with a different 'USE_X86LDOUBLE' define. We guess
+       if we are in an MMX state to restore correctly in that case. */
+    guess_mmx = ((fptag == 0xff) && (fpus & 0x3800) == 0);
+    for(i = 0; i < 8; i++) {
+        uint64_t mant;
+        uint16_t exp;
+        
+        switch(fpregs_format) {
+        case 0:
+            mant = qemu_get_be64(f);
+            exp = qemu_get_be16(f);
+#ifdef USE_X86LDOUBLE
+            env->fpregs[i].d = cpu_set_fp80(mant, exp);
+#else
+            /* difficult case */
+            if (guess_mmx)
+                env->fpregs[i].mmx.MMX_Q(0) = mant;
+            else
+                env->fpregs[i].d = cpu_set_fp80(mant, exp);
+#endif
+            break;
+        case 1:
+            mant = qemu_get_be64(f);
+#ifdef USE_X86LDOUBLE
+            {
+                union x86_longdouble *p;
+                /* difficult case */
+                p = (void *)&env->fpregs[i];
+                if (guess_mmx) {
+                    p->mant = mant;
+                    p->exp = 0xffff;
+                } else {
+                    fp64_to_fp80(p, mant);
+                }
+            }
+#else
+            env->fpregs[i].mmx.MMX_Q(0) = mant;
+#endif            
+            break;
+        default:
+            return -EINVAL;
+        }
+    }
+
+    env->fpuc = fpuc;
+    /* XXX: restore FPU round state */
+    env->fpstt = (fpus >> 11) & 7;
+    env->fpus = fpus & ~0x3800;
+    fptag ^= 0xff;
+    for(i = 0; i < 8; i++) {
+        env->fptags[i] = (fptag >> i) & 1;
+    }
+    
+    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_betls(f, &env->cr[0]);
+    qemu_get_betls(f, &env->cr[2]);
+    qemu_get_betls(f, &env->cr[3]);
+    qemu_get_betls(f, &env->cr[4]);
+    
+    for(i = 0; i < 8; i++)
+        qemu_get_betls(f, &env->dr[i]);
+
+    /* MMU */
+    qemu_get_be32s(f, &env->a20_mask);
+
+    qemu_get_be32s(f, &env->mxcsr);
+    for(i = 0; i < CPU_NB_REGS; i++) {
+        qemu_get_be64s(f, &env->xmm_regs[i].XMM_Q(0));
+        qemu_get_be64s(f, &env->xmm_regs[i].XMM_Q(1));
+    }
+
+#ifdef TARGET_X86_64
+    qemu_get_be64s(f, &env->efer);
+    qemu_get_be64s(f, &env->star);
+    qemu_get_be64s(f, &env->lstar);
+    qemu_get_be64s(f, &env->cstar);
+    qemu_get_be64s(f, &env->fmask);
+    qemu_get_be64s(f, &env->kernelgsbase);
+#endif
+
+    /* 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_MIPS)
+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)
+{
+    CPUState *env = opaque;
+    int i;
+    uint32_t tmp;
+
+    for(i = 0; i < 8; i++)
+        qemu_put_betls(f, &env->gregs[i]);
+    for(i = 0; i < NWINDOWS * 16; i++)
+        qemu_put_betls(f, &env->regbase[i]);
+
+    /* FPU */
+    for(i = 0; i < TARGET_FPREGS; i++) {
+        union {
+            float32 f;
+            uint32_t i;
+        } u;
+        u.f = env->fpr[i];
+        qemu_put_be32(f, u.i);
+    }
+
+    qemu_put_betls(f, &env->pc);
+    qemu_put_betls(f, &env->npc);
+    qemu_put_betls(f, &env->y);
+    tmp = GET_PSR(env);
+    qemu_put_be32(f, tmp);
+    qemu_put_betls(f, &env->fsr);
+    qemu_put_betls(f, &env->tbr);
+#ifndef TARGET_SPARC64
+    qemu_put_be32s(f, &env->wim);
+    /* MMU */
+    for(i = 0; i < 16; i++)
+        qemu_put_be32s(f, &env->mmuregs[i]);
+#endif
+}
+
+int cpu_load(QEMUFile *f, void *opaque, int version_id)
+{
+    CPUState *env = opaque;
+    int i;
+    uint32_t tmp;
+
+    for(i = 0; i < 8; i++)
+        qemu_get_betls(f, &env->gregs[i]);
+    for(i = 0; i < NWINDOWS * 16; i++)
+        qemu_get_betls(f, &env->regbase[i]);
+
+    /* FPU */
+    for(i = 0; i < TARGET_FPREGS; i++) {
+        union {
+            float32 f;
+            uint32_t i;
+        } u;
+        u.i = qemu_get_be32(f);
+        env->fpr[i] = u.f;
+    }
+
+    qemu_get_betls(f, &env->pc);
+    qemu_get_betls(f, &env->npc);
+    qemu_get_betls(f, &env->y);
+    tmp = qemu_get_be32(f);
+    env->cwp = 0; /* needed to ensure that the wrapping registers are
+                     correctly updated */
+    PUT_PSR(env, tmp);
+    qemu_get_betls(f, &env->fsr);
+    qemu_get_betls(f, &env->tbr);
+#ifndef TARGET_SPARC64
+    qemu_get_be32s(f, &env->wim);
+    /* MMU */
+    for(i = 0; i < 16; i++)
+        qemu_get_be32s(f, &env->mmuregs[i]);
+#endif
+    tlb_flush(env, 1);
+    return 0;
+}
+
+#elif defined(TARGET_ARM)
+
+/* ??? Need to implement these.  */
+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;
+}
+
+/***********************************************************/
+/* machine registration */
+
+QEMUMachine *first_machine = NULL;
+
+int qemu_register_machine(QEMUMachine *m)
+{
+    QEMUMachine **pm;
+    pm = &first_machine;
+    while (*pm != NULL)
+        pm = &(*pm)->next;
+    m->next = NULL;
+    *pm = m;
+    return 0;
+}
+
+QEMUMachine *find_machine(const char *name)
+{
+    QEMUMachine *m;
+
+    for(m = first_machine; m != NULL; m = m->next) {
+        if (!strcmp(m->name, name))
+            return m;
+    }
+    return NULL;
+}
+
+/***********************************************************/
+/* main execution loop */
+
+void gui_update(void *opaque)
+{
+    display_state.dpy_refresh(&display_state);
+    qemu_mod_timer(gui_timer, GUI_REFRESH_INTERVAL + qemu_get_clock(rt_clock));
+}
+
+struct vm_change_state_entry {
+    VMChangeStateHandler *cb;
+    void *opaque;
+    LIST_ENTRY (vm_change_state_entry) entries;
+};
+
+static LIST_HEAD(vm_change_state_head, vm_change_state_entry) vm_change_state_head;
+
+VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
+                                                     void *opaque)
+{
+    VMChangeStateEntry *e;
+
+    e = qemu_mallocz(sizeof (*e));
+    if (!e)
+        return NULL;
+
+    e->cb = cb;
+    e->opaque = opaque;
+    LIST_INSERT_HEAD(&vm_change_state_head, e, entries);
+    return e;
+}
+
+void qemu_del_vm_change_state_handler(VMChangeStateEntry *e)
+{
+    LIST_REMOVE (e, entries);
+    qemu_free (e);
+}
+
+static void vm_state_notify(int running)
+{
+    VMChangeStateEntry *e;
+
+    for (e = vm_change_state_head.lh_first; e; e = e->entries.le_next) {
+        e->cb(e->opaque, running);
+    }
+}
+
+/* XXX: support several handlers */
+static VMStopHandler *vm_stop_cb;
+static void *vm_stop_opaque;
+
+int qemu_add_vm_stop_handler(VMStopHandler *cb, void *opaque)
+{
+    vm_stop_cb = cb;
+    vm_stop_opaque = opaque;
+    return 0;
+}
+
+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;
+        vm_state_notify(1);
+    }
+}
+
+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);
+            }
+        }
+        vm_state_notify(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;
+static int powerdown_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;
+    if (cpu_single_env)
+        cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT);
+}
+
+void qemu_system_shutdown_request(void)
+{
+    shutdown_requested = 1;
+    if (cpu_single_env)
+        cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT);
+}
+
+void qemu_system_powerdown_request(void)
+{
+    powerdown_requested = 1;
+    if (cpu_single_env)
+        cpu_interrupt(cpu_single_env, CPU_INTERRUPT_EXIT);
+}
+
+void main_loop_wait(int timeout)
+{
+    IOHandlerRecord *ioh, *ioh_next;
+    fd_set rfds, wfds, xfds;
+    int ret, nfds;
+    struct timeval tv;
+    PollingEntry *pe;
+
+
+    /* XXX: need to suppress polling by better using win32 events */
+    ret = 0;
+    for(pe = first_polling_entry; pe != NULL; pe = pe->next) {
+        ret |= pe->func(pe->opaque);
+    }
+#ifdef _WIN32
+    if (ret == 0 && timeout > 0) {
+        int err;
+        WaitObjects *w = &wait_objects;
+        
+        ret = WaitForMultipleObjects(w->num, w->events, FALSE, timeout);
+        if (WAIT_OBJECT_0 + 0 <= ret && ret <= WAIT_OBJECT_0 + w->num - 1) {
+            if (w->func[ret - WAIT_OBJECT_0])
+                w->func[ret - WAIT_OBJECT_0](w->opaque[ret - WAIT_OBJECT_0]);
+        } else if (ret == WAIT_TIMEOUT) {
+        } else {
+            err = GetLastError();
+            fprintf(stderr, "Wait error %d %d\n", ret, err);
+        }
+    }
+#endif
+    /* poll any events */
+    /* XXX: separate device handlers from system ones */
+    nfds = -1;
+    FD_ZERO(&rfds);
+    FD_ZERO(&wfds);
+    FD_ZERO(&xfds);
+    for(ioh = first_io_handler; ioh != NULL; ioh = ioh->next) {
+        if (ioh->fd_read &&
+            (!ioh->fd_read_poll ||
+             ioh->fd_read_poll(ioh->opaque) != 0)) {
+            FD_SET(ioh->fd, &rfds);
+            if (ioh->fd > nfds)
+                nfds = ioh->fd;
+        }
+        if (ioh->fd_write) {
+            FD_SET(ioh->fd, &wfds);
+            if (ioh->fd > nfds)
+                nfds = ioh->fd;
+        }
+    }
+    
+    tv.tv_sec = 0;
+#ifdef _WIN32
+    tv.tv_usec = 0;
+#else
+    tv.tv_usec = timeout * 1000;
+#endif
+#if defined(CONFIG_SLIRP)
+    if (slirp_inited) {
+        slirp_select_fill(&nfds, &rfds, &wfds, &xfds);
+    }
+#endif
+    ret = select(nfds + 1, &rfds, &wfds, &xfds, &tv);
+    if (ret > 0) {
+        /* XXX: better handling of removal */
+        for(ioh = first_io_handler; ioh != NULL; ioh = ioh_next) {
+            ioh_next = ioh->next;
+            if (FD_ISSET(ioh->fd, &rfds)) {
+                ioh->fd_read(ioh->opaque);
+            }
+            if (FD_ISSET(ioh->fd, &wfds)) {
+                ioh->fd_write(ioh->opaque);
+            }
+        }
+    }
+#if defined(CONFIG_SLIRP)
+    if (slirp_inited) {
+        if (ret < 0) {
+            FD_ZERO(&rfds);
+            FD_ZERO(&wfds);
+            FD_ZERO(&xfds);
+        }
+        slirp_select_poll(&rfds, &wfds, &xfds);
+    }
+#endif
+#ifdef _WIN32
+    tap_win32_poll();
+#endif
+
+    if (vm_running) {
+        qemu_run_timers(&active_timers[QEMU_TIMER_VIRTUAL], 
+                        qemu_get_clock(vm_clock));
+        /* run dma transfers, if any */
+        DMA_run();
+    }
+    
+    /* real time timers */
+    qemu_run_timers(&active_timers[QEMU_TIMER_REALTIME], 
+                    qemu_get_clock(rt_clock));
+}
+
+static CPUState *cur_cpu;
+
+int main_loop(void)
+{
+    int ret, timeout;
+#ifdef CONFIG_PROFILER
+    int64_t ti;
+#endif
+    CPUState *env;
+
+    cur_cpu = first_cpu;
+    for(;;) {
+        if (vm_running) {
+
+            env = cur_cpu;
+            for(;;) {
+                /* get next cpu */
+                env = env->next_cpu;
+                if (!env)
+                    env = first_cpu;
+#ifdef CONFIG_PROFILER
+                ti = profile_getclock();
+#endif
+                ret = cpu_exec(env);
+#ifdef CONFIG_PROFILER
+                qemu_time += profile_getclock() - ti;
+#endif
+                if (ret != EXCP_HALTED)
+                    break;
+                /* all CPUs are halted ? */
+                if (env == cur_cpu) {
+                    ret = EXCP_HLT;
+                    break;
+                }
+            }
+            cur_cpu = env;
+
+            if (shutdown_requested) {
+                ret = EXCP_INTERRUPT;
+                break;
+            }
+            if (reset_requested) {
+                reset_requested = 0;
+                qemu_system_reset();
+                ret = EXCP_INTERRUPT;
+            }
+            if (powerdown_requested) {
+                powerdown_requested = 0;
+		qemu_system_powerdown();
+                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;
+        }
+#ifdef CONFIG_PROFILER
+        ti = profile_getclock();
+#endif
+        main_loop_wait(timeout);
+#ifdef CONFIG_PROFILER
+        dev_time += profile_getclock() - ti;
+#endif
+    }
+    cpu_disable_ticks();
+    return ret;
+}
+
+void help(void)
+{
+    printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003-2005 Fabrice Bellard\n"
+           "usage: %s [options] [disk_image]\n"
+           "\n"
+           "'disk_image' is a raw hard image image for IDE hard disk 0\n"
+           "\n"
+           "Standard options:\n"
+           "-M machine      select emulated machine (-M ? for list)\n"
+           "-fda/-fdb file  use 'file' as floppy disk 0/1 image\n"
+           "-hda/-hdb file  use 'file' as IDE hard disk 0/1 image\n"
+           "-hdc/-hdd file  use 'file' as IDE hard disk 2/3 image\n"
+           "-cdrom file     use 'file' as IDE cdrom image (cdrom is ide1 master)\n"
+           "-boot [a|c|d]   boot on floppy (a), hard disk (c) or CD-ROM (d)\n"
+	   "-snapshot       write to temporary files instead of disk image files\n"
+#ifdef TARGET_I386
+           "-no-fd-bootchk  disable boot signature checking for floppy disks\n"
+#endif
+           "-m megs         set virtual RAM size to megs MB [default=%d]\n"
+           "-smp n          set the number of CPUs to 'n' [default=1]\n"
+           "-nographic      disable graphical output and redirect serial I/Os to console\n"
+#ifndef _WIN32
+	   "-k language     use keyboard layout (for example \"fr\" for French)\n"
+#endif
+#ifdef HAS_AUDIO
+           "-audio-help     print list of audio drivers and their options\n"
+           "-soundhw c1,... enable audio support\n"
+           "                and only specified sound cards (comma separated list)\n"
+           "                use -soundhw ? to get the list of supported cards\n"
+           "                use -soundhw all to enable all of them\n"
+#endif
+           "-localtime      set the real time clock to local time [default=utc]\n"
+           "-full-screen    start in full screen\n"
+#ifdef TARGET_I386
+           "-win2k-hack     use it when installing Windows 2000 to avoid a disk full bug\n"
+#endif
+           "-usb            enable the USB driver (will be the default soon)\n"
+           "-usbdevice name add the host or guest USB device 'name'\n"
+#if defined(TARGET_PPC) || defined(TARGET_SPARC)
+           "-g WxH[xDEPTH]  Set the initial graphical resolution and depth\n"
+#endif
+           "\n"
+           "Network options:\n"
+           "-net nic[,vlan=n][,macaddr=addr][,model=type]\n"
+           "                create a new Network Interface Card and connect it to VLAN 'n'\n"
+#ifdef CONFIG_SLIRP
+           "-net user[,vlan=n][,hostname=host]\n"
+           "                connect the user mode network stack to VLAN 'n' and send\n"
+           "                hostname 'host' to DHCP clients\n"
+#endif
+#ifdef _WIN32
+           "-net tap[,vlan=n],ifname=name\n"
+           "                connect the host TAP network interface to VLAN 'n'\n"
+#else
+           "-net tap[,vlan=n][,fd=h][,ifname=name][,script=file]\n"
+           "                connect the host TAP network interface to VLAN 'n' and use\n"
+           "                the network script 'file' (default=%s);\n"
+           "                use 'fd=h' to connect to an already opened TAP interface\n"
+#endif
+           "-net socket[,vlan=n][,fd=h][,listen=[host]:port][,connect=host:port]\n"
+           "                connect the vlan 'n' to another VLAN using a socket connection\n"
+           "-net socket[,vlan=n][,fd=h][,mcast=maddr:port]\n"
+           "                connect the vlan 'n' to multicast maddr and port\n"
+           "-net none       use it alone to have zero network devices; if no -net option\n"
+           "                is provided, the default is '-net nic -net user'\n"
+           "\n"
+#ifdef CONFIG_SLIRP
+           "-tftp prefix    allow tftp access to files starting with prefix [-net user]\n"
+#ifndef _WIN32
+           "-smb dir        allow SMB access to files in 'dir' [-net user]\n"
+#endif
+           "-redir [tcp|udp]:host-port:[guest-host]:guest-port\n"
+           "                redirect TCP or UDP connections from host to guest [-net user]\n"
+#endif
+           "\n"
+           "Linux boot specific:\n"
+           "-kernel bzImage use 'bzImage' as kernel image\n"
+           "-append cmdline use 'cmdline' as kernel command line\n"
+           "-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"
+           "-parallel dev   redirect the parallel port to char device 'dev'\n"
+           "-pidfile file   Write PID to 'file'\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 item1,...    output log to %s (use -d ? for a list of log items)\n"
+           "-hdachs c,h,s[,t]  force hard disk 0 physical geometry and the optional BIOS\n"
+           "                translation (t=none or lba) (usually qemu can guess them)\n"
+           "-L path         set the directory for the BIOS and VGA BIOS\n"
+#ifdef USE_KQEMU
+           "-kernel-kqemu   enable KQEMU full virtualization (default is user mode only)\n"
+           "-no-kqemu       disable KQEMU kernel module usage\n"
+#endif
+#ifdef USE_CODE_COPY
+           "-no-code-copy   disable code copy acceleration\n"
+#endif
+#ifdef TARGET_I386
+           "-std-vga        simulate a standard VGA card with VESA Bochs Extensions\n"
+           "                (default is CL-GD5446 PCI VGA)\n"
+           "-no-acpi        disable ACPI\n"
+#endif
+           "-loadvm file    start right away with a saved state (loadvm in monitor)\n"
+	   "-vnc display    start a VNC server on display\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"
+           "When using -nographic, press 'ctrl-a h' to get some help.\n"
+           ,
+           "qemu",
+           DEFAULT_RAM_SIZE,
+#ifndef _WIN32
+           DEFAULT_NETWORK_SCRIPT,
+#endif
+           DEFAULT_GDBSTUB_PORT,
+           "/tmp/qemu.log");
+    exit(1);
+}
+
+#define HAS_ARG 0x0001
+
+enum {
+    QEMU_OPTION_h,
+
+    QEMU_OPTION_M,
+    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,
+#ifdef TARGET_I386
+    QEMU_OPTION_no_fd_bootchk,
+#endif
+    QEMU_OPTION_m,
+    QEMU_OPTION_nographic,
+#ifdef HAS_AUDIO
+    QEMU_OPTION_audio_help,
+    QEMU_OPTION_soundhw,
+#endif
+
+    QEMU_OPTION_net,
+    QEMU_OPTION_tftp,
+    QEMU_OPTION_smb,
+    QEMU_OPTION_redir,
+
+    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_k,
+    QEMU_OPTION_localtime,
+    QEMU_OPTION_cirrusvga,
+    QEMU_OPTION_g,
+    QEMU_OPTION_std_vga,
+    QEMU_OPTION_monitor,
+    QEMU_OPTION_serial,
+    QEMU_OPTION_parallel,
+    QEMU_OPTION_loadvm,
+    QEMU_OPTION_full_screen,
+    QEMU_OPTION_pidfile,
+    QEMU_OPTION_no_kqemu,
+    QEMU_OPTION_kernel_kqemu,
+    QEMU_OPTION_win2k_hack,
+    QEMU_OPTION_usb,
+    QEMU_OPTION_usbdevice,
+    QEMU_OPTION_smp,
+    QEMU_OPTION_vnc,
+    QEMU_OPTION_no_acpi,
+};
+
+typedef struct QEMUOption {
+    const char *name;
+    int flags;
+    int index;
+} QEMUOption;
+
+const QEMUOption qemu_options[] = {
+    { "h", 0, QEMU_OPTION_h },
+
+    { "M", HAS_ARG, QEMU_OPTION_M },
+    { "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 },
+#ifdef TARGET_I386
+    { "no-fd-bootchk", 0, QEMU_OPTION_no_fd_bootchk },
+#endif
+    { "m", HAS_ARG, QEMU_OPTION_m },
+    { "nographic", 0, QEMU_OPTION_nographic },
+    { "k", HAS_ARG, QEMU_OPTION_k },
+#ifdef HAS_AUDIO
+    { "audio-help", 0, QEMU_OPTION_audio_help },
+    { "soundhw", HAS_ARG, QEMU_OPTION_soundhw },
+#endif
+
+    { "net", HAS_ARG, QEMU_OPTION_net},
+#ifdef CONFIG_SLIRP
+    { "tftp", HAS_ARG, QEMU_OPTION_tftp },
+#ifndef _WIN32
+    { "smb", HAS_ARG, QEMU_OPTION_smb },
+#endif
+    { "redir", HAS_ARG, QEMU_OPTION_redir },
+#endif
+
+    { "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 USE_KQEMU
+    { "no-kqemu", 0, QEMU_OPTION_no_kqemu },
+    { "kernel-kqemu", 0, QEMU_OPTION_kernel_kqemu },
+#endif
+#if defined(TARGET_PPC) || defined(TARGET_SPARC)
+    { "g", 1, QEMU_OPTION_g },
+#endif
+    { "localtime", 0, QEMU_OPTION_localtime },
+    { "std-vga", 0, QEMU_OPTION_std_vga },
+    { "monitor", 1, QEMU_OPTION_monitor },
+    { "serial", 1, QEMU_OPTION_serial },
+    { "parallel", 1, QEMU_OPTION_parallel },
+    { "loadvm", HAS_ARG, QEMU_OPTION_loadvm },
+    { "full-screen", 0, QEMU_OPTION_full_screen },
+    { "pidfile", HAS_ARG, QEMU_OPTION_pidfile },
+    { "win2k-hack", 0, QEMU_OPTION_win2k_hack },
+    { "usbdevice", HAS_ARG, QEMU_OPTION_usbdevice },
+    { "smp", HAS_ARG, QEMU_OPTION_smp },
+    { "vnc", HAS_ARG, QEMU_OPTION_vnc },
+    
+    /* temporary options */
+    { "usb", 0, QEMU_OPTION_usb },
+    { "cirrusvga", 0, QEMU_OPTION_cirrusvga },
+    { "no-acpi", 0, QEMU_OPTION_no_acpi },
+    { NULL },
+};
+
+#if defined (TARGET_I386) && defined(USE_CODE_COPY)
+
+/* this stack is only used during signal handling */
+#define SIGNAL_STACK_SIZE 32768
+
+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");
+            }
+        }
+    }
+}
+
+/* XXX: currently we cannot use simultaneously different CPUs */
+void register_machines(void)
+{
+#if defined(TARGET_I386)
+    qemu_register_machine(&pc_machine);
+    qemu_register_machine(&isapc_machine);
+#elif defined(TARGET_PPC)
+    qemu_register_machine(&heathrow_machine);
+    qemu_register_machine(&core99_machine);
+    qemu_register_machine(&prep_machine);
+#elif defined(TARGET_MIPS)
+    qemu_register_machine(&mips_machine);
+#elif defined(TARGET_SPARC)
+#ifdef TARGET_SPARC64
+    qemu_register_machine(&sun4u_machine);
+#else
+    qemu_register_machine(&sun4m_machine);
+#endif
+#elif defined(TARGET_ARM)
+    qemu_register_machine(&integratorcp926_machine);
+    qemu_register_machine(&integratorcp1026_machine);
+    qemu_register_machine(&versatilepb_machine);
+    qemu_register_machine(&versatileab_machine);
+#elif defined(TARGET_SH4)
+    qemu_register_machine(&shix_machine);
+#else
+#error unsupported CPU
+#endif
+}
+
+#ifdef HAS_AUDIO
+struct soundhw soundhw[] = {
+#ifdef TARGET_I386
+    {
+        "pcspk",
+        "PC speaker",
+        0,
+        1,
+        { .init_isa = pcspk_audio_init }
+    },
+#endif
+    {
+        "sb16",
+        "Creative Sound Blaster 16",
+        0,
+        1,
+        { .init_isa = SB16_init }
+    },
+
+#ifdef CONFIG_ADLIB
+    {
+        "adlib",
+#ifdef HAS_YMF262
+        "Yamaha YMF262 (OPL3)",
+#else
+        "Yamaha YM3812 (OPL2)",
+#endif
+        0,
+        1,
+        { .init_isa = Adlib_init }
+    },
+#endif
+
+#ifdef CONFIG_GUS
+    {
+        "gus",
+        "Gravis Ultrasound GF1",
+        0,
+        1,
+        { .init_isa = GUS_init }
+    },
+#endif
+
+    {
+        "es1370",
+        "ENSONIQ AudioPCI ES1370",
+        0,
+        0,
+        { .init_pci = es1370_init }
+    },
+
+    { NULL, NULL, 0, 0, { NULL } }
+};
+
+static void select_soundhw (const char *optarg)
+{
+    struct soundhw *c;
+
+    if (*optarg == '?') {
+    show_valid_cards:
+
+        printf ("Valid sound card names (comma separated):\n");
+        for (c = soundhw; c->name; ++c) {
+            printf ("%-11s %s\n", c->name, c->descr);
+        }
+        printf ("\n-soundhw all will enable all of the above\n");
+        exit (*optarg != '?');
+    }
+    else {
+        size_t l;
+        const char *p;
+        char *e;
+        int bad_card = 0;
+
+        if (!strcmp (optarg, "all")) {
+            for (c = soundhw; c->name; ++c) {
+                c->enabled = 1;
+            }
+            return;
+        }
+
+        p = optarg;
+        while (*p) {
+            e = strchr (p, ',');
+            l = !e ? strlen (p) : (size_t) (e - p);
+
+            for (c = soundhw; c->name; ++c) {
+                if (!strncmp (c->name, p, l)) {
+                    c->enabled = 1;
+                    break;
+                }
+            }
+
+            if (!c->name) {
+                if (l > 80) {
+                    fprintf (stderr,
+                             "Unknown sound card name (too big to show)\n");
+                }
+                else {
+                    fprintf (stderr, "Unknown sound card name `%.*s'\n",
+                             (int) l, p);
+                }
+                bad_card = 1;
+            }
+            p += l + (e != NULL);
+        }
+
+        if (bad_card)
+            goto show_valid_cards;
+    }
+}
+#endif
+
+#ifdef _WIN32
+static BOOL WINAPI qemu_ctrl_handler(DWORD type)
+{
+    exit(STATUS_CONTROL_C_EXIT);
+    return TRUE;
+}
+#endif
+
+#define MAX_NET_CLIENTS 32
+
+int main(int argc, char **argv)
+{
+#ifdef CONFIG_GDBSTUB
+    int use_gdbstub, gdbstub_port;
+#endif
+    int i, cdrom_index;
+    int snapshot, linux_boot;
+    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, translation;
+    int start_emulation = 1;
+    char net_clients[MAX_NET_CLIENTS][256];
+    int nb_net_clients;
+    int optind;
+    const char *r, *optarg;
+    CharDriverState *monitor_hd;
+    char monitor_device[128];
+    char serial_devices[MAX_SERIAL_PORTS][128];
+    int serial_device_index;
+    char parallel_devices[MAX_PARALLEL_PORTS][128];
+    int parallel_device_index;
+    const char *loadvm = NULL;
+    QEMUMachine *machine;
+    char usb_devices[MAX_USB_CMDLINE][128];
+    int usb_devices_index;
+
+    LIST_INIT (&vm_change_state_head);
+#ifndef _WIN32
+    {
+        struct sigaction act;
+        sigfillset(&act.sa_mask);
+        act.sa_flags = 0;
+        act.sa_handler = SIG_IGN;
+        sigaction(SIGPIPE, &act, NULL);
+    }
+#else
+    SetConsoleCtrlHandler(qemu_ctrl_handler, TRUE);
+    /* Note: cpu_interrupt() is currently not SMP safe, so we force
+       QEMU to run on a single CPU */
+    {
+        HANDLE h;
+        DWORD mask, smask;
+        int i;
+        h = GetCurrentProcess();
+        if (GetProcessAffinityMask(h, &mask, &smask)) {
+            for(i = 0; i < 32; i++) {
+                if (mask & (1 << i))
+                    break;
+            }
+            if (i != 32) {
+                mask = 1 << i;
+                SetProcessAffinityMask(h, mask);
+            }
+        }
+    }
+#endif
+
+    register_machines();
+    machine = first_machine;
+    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 = DEFAULT_RAM_SIZE * 1024 * 1024;
+    vga_ram_size = VGA_RAM_SIZE;
+    bios_size = BIOS_SIZE;
+#ifdef CONFIG_GDBSTUB
+    use_gdbstub = 0;
+    gdbstub_port = DEFAULT_GDBSTUB_PORT;
+#endif
+    snapshot = 0;
+    nographic = 0;
+    kernel_filename = NULL;
+    kernel_cmdline = "";
+#ifdef TARGET_PPC
+    cdrom_index = 1;
+#else
+    cdrom_index = 2;
+#endif
+    cyls = heads = secs = 0;
+    translation = BIOS_ATA_TRANSLATION_AUTO;
+    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;
+    
+    pstrcpy(parallel_devices[0], sizeof(parallel_devices[0]), "vc");
+    for(i = 1; i < MAX_PARALLEL_PORTS; i++)
+        parallel_devices[i][0] = '\0';
+    parallel_device_index = 0;
+    
+    usb_devices_index = 0;
+    
+    nb_net_clients = 0;
+
+    nb_nics = 0;
+    /* default mac address of the first network interface */
+    
+    optind = 1;
+    for(;;) {
+        if (optind >= argc)
+            break;
+        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_M:
+                machine = find_machine(optarg);
+                if (!machine) {
+                    QEMUMachine *m;
+                    printf("Supported machines are:\n");
+                    for(m = first_machine; m != NULL; m = m->next) {
+                        printf("%-10s %s%s\n",
+                               m->name, m->desc, 
+                               m == first_machine ? " (default)" : "");
+                    }
+                    exit(1);
+                }
+                break;
+            case QEMU_OPTION_initrd:
+                initrd_filename = optarg;
+                break;
+            case QEMU_OPTION_hda:
+            case QEMU_OPTION_hdb:
+            case QEMU_OPTION_hdc:
+            case QEMU_OPTION_hdd:
+                {
+                    int hd_index;
+                    hd_index = popt->index - QEMU_OPTION_hda;
+                    hd_filename[hd_index] = optarg;
+                    if (hd_index == cdrom_index)
+                        cdrom_index = -1;
+                }
+                break;
+            case QEMU_OPTION_snapshot:
+                snapshot = 1;
+                break;
+            case QEMU_OPTION_hdachs:
+                {
+                    const char *p;
+                    p = optarg;
+                    cyls = strtol(p, (char **)&p, 0);
+                    if (cyls < 1 || cyls > 16383)
+                        goto chs_fail;
+                    if (*p != ',')
+                        goto chs_fail;
+                    p++;
+                    heads = strtol(p, (char **)&p, 0);
+                    if (heads < 1 || heads > 16)
+                        goto chs_fail;
+                    if (*p != ',')
+                        goto chs_fail;
+                    p++;
+                    secs = strtol(p, (char **)&p, 0);
+                    if (secs < 1 || secs > 63)
+                        goto chs_fail;
+                    if (*p == ',') {
+                        p++;
+                        if (!strcmp(p, "none"))
+                            translation = BIOS_ATA_TRANSLATION_NONE;
+                        else if (!strcmp(p, "lba"))
+                            translation = BIOS_ATA_TRANSLATION_LBA;
+                        else if (!strcmp(p, "auto"))
+                            translation = BIOS_ATA_TRANSLATION_AUTO;
+                        else
+                            goto chs_fail;
+                    } else if (*p != '\0') {
+                    chs_fail:
+                        fprintf(stderr, "qemu: invalid physical CHS format\n");
+                        exit(1);
+                    }
+                }
+                break;
+            case QEMU_OPTION_nographic:
+                pstrcpy(monitor_device, sizeof(monitor_device), "stdio");
+                pstrcpy(serial_devices[0], sizeof(serial_devices[0]), "stdio");
+                nographic = 1;
+                break;
+            case QEMU_OPTION_kernel:
+                kernel_filename = optarg;
+                break;
+            case QEMU_OPTION_append:
+                kernel_cmdline = optarg;
+                break;
+            case QEMU_OPTION_cdrom:
+                if (cdrom_index >= 0) {
+                    hd_filename[cdrom_index] = optarg;
+                }
+                break;
+            case QEMU_OPTION_boot:
+                boot_device = optarg[0];
+                if (boot_device != 'a' && 
+#ifdef TARGET_SPARC
+		    // Network boot
+		    boot_device != 'n' &&
+#endif
+                    boot_device != 'c' && boot_device != 'd') {
+                    fprintf(stderr, "qemu: invalid boot device '%c'\n", boot_device);
+                    exit(1);
+                }
+                break;
+            case QEMU_OPTION_fda:
+                fd_filename[0] = optarg;
+                break;
+            case QEMU_OPTION_fdb:
+                fd_filename[1] = optarg;
+                break;
+#ifdef TARGET_I386
+            case QEMU_OPTION_no_fd_bootchk:
+                fd_bootchk = 0;
+                break;
+#endif
+            case QEMU_OPTION_no_code_copy:
+                code_copy_enabled = 0;
+                break;
+            case QEMU_OPTION_net:
+                if (nb_net_clients >= MAX_NET_CLIENTS) {
+                    fprintf(stderr, "qemu: too many network clients\n");
+                    exit(1);
+                }
+                pstrcpy(net_clients[nb_net_clients],
+                        sizeof(net_clients[0]),
+                        optarg);
+                nb_net_clients++;
+                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_redir:
+                net_slirp_redir(optarg);                
+                break;
+#endif
+#ifdef HAS_AUDIO
+            case QEMU_OPTION_audio_help:
+                AUD_help ();
+                exit (0);
+                break;
+            case QEMU_OPTION_soundhw:
+                select_soundhw (optarg);
+                break;
+#endif
+            case QEMU_OPTION_h:
+                help();
+                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;
+#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_k:
+		keyboard_layout = optarg;
+		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_parallel:
+                if (parallel_device_index >= MAX_PARALLEL_PORTS) {
+                    fprintf(stderr, "qemu: too many parallel ports\n");
+                    exit(1);
+                }
+                pstrcpy(parallel_devices[parallel_device_index], 
+                        sizeof(parallel_devices[0]), optarg);
+                parallel_device_index++;
+                break;
+	    case QEMU_OPTION_loadvm:
+		loadvm = optarg;
+		break;
+            case QEMU_OPTION_full_screen:
+                full_screen = 1;
+                break;
+            case QEMU_OPTION_pidfile:
+                create_pidfile(optarg);
+                break;
+#ifdef TARGET_I386
+            case QEMU_OPTION_win2k_hack:
+                win2k_install_hack = 1;
+                break;
+#endif
+#ifdef USE_KQEMU
+            case QEMU_OPTION_no_kqemu:
+                kqemu_allowed = 0;
+                break;
+            case QEMU_OPTION_kernel_kqemu:
+                kqemu_allowed = 2;
+                break;
+#endif
+            case QEMU_OPTION_usb:
+                usb_enabled = 1;
+                break;
+            case QEMU_OPTION_usbdevice:
+                usb_enabled = 1;
+                if (usb_devices_index >= MAX_USB_CMDLINE) {
+                    fprintf(stderr, "Too many USB devices\n");
+                    exit(1);
+                }
+                pstrcpy(usb_devices[usb_devices_index],
+                        sizeof(usb_devices[usb_devices_index]),
+                        optarg);
+                usb_devices_index++;
+                break;
+            case QEMU_OPTION_smp:
+                smp_cpus = atoi(optarg);
+                if (smp_cpus < 1 || smp_cpus > MAX_CPUS) {
+                    fprintf(stderr, "Invalid number of CPUs\n");
+                    exit(1);
+                }
+                break;
+	    case QEMU_OPTION_vnc:
+		vnc_display = atoi(optarg);
+		if (vnc_display < 0) {
+		    fprintf(stderr, "Invalid VNC display\n");
+		    exit(1);
+		}
+		break;
+            case QEMU_OPTION_no_acpi:
+                acpi_enabled = 0;
+                break;
+            }
+        }
+    }
+
+#ifdef USE_KQEMU
+    if (smp_cpus > 1)
+        kqemu_allowed = 0;
+#endif
+    linux_boot = (kernel_filename != NULL);
+        
+    if (!linux_boot && 
+        hd_filename[0] == '\0' && 
+        (cdrom_index >= 0 && hd_filename[cdrom_index] == '\0') &&
+        fd_filename[0] == '\0')
+        help();
+    
+    /* boot to cd by default if no hard disk */
+    if (hd_filename[0] == '\0' && boot_device == 'c') {
+        if (fd_filename[0] != '\0')
+            boot_device = 'a';
+        else
+            boot_device = 'd';
+    }
+
+    setvbuf(stdout, NULL, _IOLBF, 0);
+    
+    init_timers();
+    init_timer_alarm();
+
+#ifdef _WIN32
+    socket_init();
+#endif
+
+    /* init network clients */
+    if (nb_net_clients == 0) {
+        /* if no clients, we use a default config */
+        pstrcpy(net_clients[0], sizeof(net_clients[0]),
+                "nic");
+        pstrcpy(net_clients[1], sizeof(net_clients[0]),
+                "user");
+        nb_net_clients = 2;
+    }
+
+    for(i = 0;i < nb_net_clients; i++) {
+        if (net_client_init(net_clients[i]) < 0)
+            exit(1);
+    }
+
+    /* init the memory */
+    phys_ram_size = ram_size + vga_ram_size + bios_size;
+
+    phys_ram_base = qemu_vmalloc(phys_ram_size);
+    if (!phys_ram_base) {
+        fprintf(stderr, "Could not allocate physical memory\n");
+        exit(1);
+    }
+
+    /* we always create the cdrom drive, even if no disk is there */
+    bdrv_init();
+    if (cdrom_index >= 0) {
+        bs_table[cdrom_index] = bdrv_new("cdrom");
+        bdrv_set_type_hint(bs_table[cdrom_index], BDRV_TYPE_CDROM);
+    }
+
+    /* open the virtual block devices */
+    for(i = 0; i < MAX_DISKS; i++) {
+        if (hd_filename[i]) {
+            if (!bs_table[i]) {
+                char buf[64];
+                snprintf(buf, sizeof(buf), "hd%c", i + 'a');
+                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",
+                        hd_filename[i]);
+                exit(1);
+            }
+            if (i == 0 && cyls != 0) {
+                bdrv_set_geometry_hint(bs_table[i], cyls, heads, secs);
+                bdrv_set_translation_hint(bs_table[i], translation);
+            }
+        }
+    }
+
+    /* we always create at least one floppy disk */
+    fd_table[0] = bdrv_new("fda");
+    bdrv_set_type_hint(fd_table[0], BDRV_TYPE_FLOPPY);
+
+    for(i = 0; i < MAX_FD; i++) {
+        if (fd_filename[i]) {
+            if (!fd_table[i]) {
+                char buf[64];
+                snprintf(buf, sizeof(buf), "fd%c", i + 'a');
+                fd_table[i] = bdrv_new(buf);
+                bdrv_set_type_hint(fd_table[i], BDRV_TYPE_FLOPPY);
+            }
+            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",
+                            fd_filename[i]);
+                    exit(1);
+                }
+            }
+        }
+    }
+
+    register_savevm("timer", 0, 1, timer_save, timer_load, NULL);
+    register_savevm("ram", 0, 1, ram_save, ram_load, NULL);
+
+    init_ioports();
+
+    /* terminal init */
+    if (nographic) {
+        dumb_display_init(ds);
+    } else if (vnc_display != -1) {
+	vnc_display_init(ds, vnc_display);
+    } else {
+#if defined(CONFIG_SDL)
+        sdl_display_init(ds, full_screen);
+#elif defined(CONFIG_COCOA)
+        cocoa_display_init(ds, full_screen);
+#else
+        dumb_display_init(ds);
+#endif
+    }
+
+    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\r\n", i);
+        }
+    }
+
+    for(i = 0; i < MAX_PARALLEL_PORTS; i++) {
+        if (parallel_devices[i][0] != '\0') {
+            parallel_hds[i] = qemu_chr_open(parallel_devices[i]);
+            if (!parallel_hds[i]) {
+                fprintf(stderr, "qemu: could not open parallel device '%s'\n", 
+                        parallel_devices[i]);
+                exit(1);
+            }
+            if (!strcmp(parallel_devices[i], "vc"))
+                qemu_chr_printf(parallel_hds[i], "parallel%d console\r\n", i);
+        }
+    }
+
+    machine->init(ram_size, vga_ram_size, boot_device,
+                  ds, fd_filename, snapshot,
+                  kernel_filename, kernel_cmdline, initrd_filename);
+
+    /* init USB devices */
+    if (usb_enabled) {
+        for(i = 0; i < usb_devices_index; i++) {
+            if (usb_device_add(usb_devices[i]) < 0) {
+                fprintf(stderr, "Warning: could not add USB device %s\n",
+                        usb_devices[i]);
+            }
+        }
+    }
+
+    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) {
+        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;
+}