]> git.proxmox.com Git - mirror_qemu.git/blobdiff - vl.c
cocoa monitor fix regarding the handling of dead keys (Joachim Henke)
[mirror_qemu.git] / vl.c
diff --git a/vl.c b/vl.c
index c8a0652259638fa5dd485412e2a28fd3e317ff32..5cbd1644a493b26b1bd4a47916621658f6a64453 100644 (file)
--- a/vl.c
+++ b/vl.c
@@ -1,7 +1,7 @@
 /*
- * QEMU PC System Emulator
+ * QEMU System Emulator
  * 
- * Copyright (c) 2003 Fabrice Bellard
+ * 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
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  * THE SOFTWARE.
  */
-#include <stdlib.h>
-#include <stdio.h>
-#include <stdarg.h>
-#include <string.h>
-#include <ctype.h>
-#include <getopt.h>
-#include <inttypes.h>
+#include "vl.h"
+
 #include <unistd.h>
-#include <sys/mman.h>
 #include <fcntl.h>
 #include <signal.h>
 #include <time.h>
+#include <errno.h>
 #include <sys/time.h>
-#include <malloc.h>
+
+#ifndef _WIN32
+#include <sys/times.h>
+#include <sys/wait.h>
 #include <termios.h>
 #include <sys/poll.h>
-#include <errno.h>
-#include <sys/wait.h>
-
+#include <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
 
-#include "cpu.h"
-#include "disas.h"
-#include "thunk.h"
-
-#include "vl.h"
-
-#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
-#define BIOS_FILENAME "bios.bin"
-#define VGABIOS_FILENAME "vgabios.bin"
-
-//#define DEBUG_UNUSED_IOPORT
+#if defined(CONFIG_SLIRP)
+#include "libslirp.h"
+#endif
 
-//#define DEBUG_IRQ_LATENCY
+#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
 
-/* output Bochs bios info messages */
-//#define DEBUG_BIOS
+#include "qemu_socket.h"
 
-//#define DEBUG_CMOS
+#ifdef CONFIG_SDL
+#ifdef __APPLE__
+#include <SDL/SDL.h>
+#endif
+#endif /* CONFIG_SDL */
 
-/* debug PIC */
-//#define DEBUG_PIC
+#ifdef CONFIG_COCOA
+#undef main
+#define main qemu_main
+#endif /* CONFIG_COCOA */
 
-/* debug NE2000 card */
-//#define DEBUG_NE2000
+#include "disas.h"
 
-/* debug PC keyboard */
-//#define DEBUG_KBD
+#include "exec-all.h"
 
-/* debug PC keyboard : only mouse */
-//#define DEBUG_MOUSE
+#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
 
-//#define DEBUG_SERIAL
+//#define DEBUG_UNUSED_IOPORT
+//#define DEBUG_IOPORT
 
-#define PHYS_RAM_BASE     0xac000000
+#if !defined(CONFIG_SOFTMMU)
 #define PHYS_RAM_MAX_SIZE (256 * 1024 * 1024)
+#else
+#define PHYS_RAM_MAX_SIZE (2047 * 1024 * 1024)
+#endif
 
-#if defined (TARGET_I386)
-#define KERNEL_LOAD_ADDR   0x00100000
-#elif defined (TARGET_PPC)
-//#define USE_OPEN_FIRMWARE
-#if defined (USE_OPEN_FIRMWARE)
-#define KERNEL_LOAD_ADDR    0x01000000
-#define KERNEL_STACK_ADDR   0x01200000
+#ifdef TARGET_PPC
+#define DEFAULT_RAM_SIZE 144
 #else
-#define KERNEL_LOAD_ADDR    0x00000000
-#define KERNEL_STACK_ADDR   0x00400000
-#endif
-#endif
-#define INITRD_LOAD_ADDR   0x00400000
-#define KERNEL_PARAMS_ADDR 0x00090000
-
-#define GUI_REFRESH_INTERVAL 30 
-
-/* from plex86 (BSD license) */
-struct  __attribute__ ((packed)) linux_params {
-  // For 0x00..0x3f, see 'struct screen_info' in linux/include/linux/tty.h.
-  // I just padded out the VESA parts, rather than define them.
-
-  /* 0x000 */ uint8_t   orig_x;
-  /* 0x001 */ uint8_t   orig_y;
-  /* 0x002 */ uint16_t  ext_mem_k;
-  /* 0x004 */ uint16_t  orig_video_page;
-  /* 0x006 */ uint8_t   orig_video_mode;
-  /* 0x007 */ uint8_t   orig_video_cols;
-  /* 0x008 */ uint16_t  unused1;
-  /* 0x00a */ uint16_t  orig_video_ega_bx;
-  /* 0x00c */ uint16_t  unused2;
-  /* 0x00e */ uint8_t   orig_video_lines;
-  /* 0x00f */ uint8_t   orig_video_isVGA;
-  /* 0x010 */ uint16_t  orig_video_points;
-  /* 0x012 */ uint8_t   pad0[0x20 - 0x12]; // VESA info.
-  /* 0x020 */ uint16_t  cl_magic;  // Commandline magic number (0xA33F)
-  /* 0x022 */ uint16_t  cl_offset; // Commandline offset.  Address of commandline
-                                 // is calculated as 0x90000 + cl_offset, bu
-                                 // only if cl_magic == 0xA33F.
-  /* 0x024 */ uint8_t   pad1[0x40 - 0x24]; // VESA info.
-
-  /* 0x040 */ uint8_t   apm_bios_info[20]; // struct apm_bios_info
-  /* 0x054 */ uint8_t   pad2[0x80 - 0x54];
-
-  // Following 2 from 'struct drive_info_struct' in drivers/block/cciss.h.
-  // Might be truncated?
-  /* 0x080 */ uint8_t   hd0_info[16]; // hd0-disk-parameter from intvector 0x41
-  /* 0x090 */ uint8_t   hd1_info[16]; // hd1-disk-parameter from intvector 0x46
-
-  // System description table truncated to 16 bytes
-  // From 'struct sys_desc_table_struct' in linux/arch/i386/kernel/setup.c.
-  /* 0x0a0 */ uint16_t  sys_description_len;
-  /* 0x0a2 */ uint8_t   sys_description_table[14];
-                        // [0] machine id
-                        // [1] machine submodel id
-                        // [2] BIOS revision
-                        // [3] bit1: MCA bus
-
-  /* 0x0b0 */ uint8_t   pad3[0x1e0 - 0xb0];
-  /* 0x1e0 */ uint32_t  alt_mem_k;
-  /* 0x1e4 */ uint8_t   pad4[4];
-  /* 0x1e8 */ uint8_t   e820map_entries;
-  /* 0x1e9 */ uint8_t   eddbuf_entries; // EDD_NR
-  /* 0x1ea */ uint8_t   pad5[0x1f1 - 0x1ea];
-  /* 0x1f1 */ uint8_t   setup_sects; // size of setup.S, number of sectors
-  /* 0x1f2 */ uint16_t  mount_root_rdonly; // MOUNT_ROOT_RDONLY (if !=0)
-  /* 0x1f4 */ uint16_t  sys_size; // size of compressed kernel-part in the
-                                // (b)zImage-file (in 16 byte units, rounded up)
-  /* 0x1f6 */ uint16_t  swap_dev; // (unused AFAIK)
-  /* 0x1f8 */ uint16_t  ramdisk_flags;
-  /* 0x1fa */ uint16_t  vga_mode; // (old one)
-  /* 0x1fc */ uint16_t  orig_root_dev; // (high=Major, low=minor)
-  /* 0x1fe */ uint8_t   pad6[1];
-  /* 0x1ff */ uint8_t   aux_device_info;
-  /* 0x200 */ uint16_t  jump_setup; // Jump to start of setup code,
-                                  // aka "reserved" field.
-  /* 0x202 */ uint8_t   setup_signature[4]; // Signature for SETUP-header, ="HdrS"
-  /* 0x206 */ uint16_t  header_format_version; // Version number of header format;
-  /* 0x208 */ uint8_t   setup_S_temp0[8]; // Used by setup.S for communication with
-                                        // boot loaders, look there.
-  /* 0x210 */ uint8_t   loader_type;
-                        // 0 for old one.
-                        // else 0xTV:
-                        //   T=0: LILO
-                        //   T=1: Loadlin
-                        //   T=2: bootsect-loader
-                        //   T=3: SYSLINUX
-                        //   T=4: ETHERBOOT
-                        //   V=version
-  /* 0x211 */ uint8_t   loadflags;
-                        // bit0 = 1: kernel is loaded high (bzImage)
-                        // bit7 = 1: Heap and pointer (see below) set by boot
-                        //   loader.
-  /* 0x212 */ uint16_t  setup_S_temp1;
-  /* 0x214 */ uint32_t  kernel_start;
-  /* 0x218 */ uint32_t  initrd_start;
-  /* 0x21c */ uint32_t  initrd_size;
-  /* 0x220 */ uint8_t   setup_S_temp2[4];
-  /* 0x224 */ uint16_t  setup_S_heap_end_pointer;
-  /* 0x226 */ uint8_t   pad7[0x2d0 - 0x226];
-
-  /* 0x2d0 : Int 15, ax=e820 memory map. */
-  // (linux/include/asm-i386/e820.h, 'struct e820entry')
-#define E820MAX  32
-#define E820_RAM  1
-#define E820_RESERVED 2
-#define E820_ACPI 3 /* usable as RAM once ACPI tables have been read */
-#define E820_NVS  4
-  struct {
-    uint64_t addr;
-    uint64_t size;
-    uint32_t type;
-    } e820map[E820MAX];
-
-  /* 0x550 */ uint8_t   pad8[0x600 - 0x550];
-
-  // BIOS Enhanced Disk Drive Services.
-  // (From linux/include/asm-i386/edd.h, 'struct edd_info')
-  // Each 'struct edd_info is 78 bytes, times a max of 6 structs in array.
-  /* 0x600 */ uint8_t   eddbuf[0x7d4 - 0x600];
-
-  /* 0x7d4 */ uint8_t   pad9[0x800 - 0x7d4];
-  /* 0x800 */ uint8_t   commandline[0x800];
-
-  /* 0x1000 */
-  uint64_t gdt_table[256];
-  uint64_t idt_table[48];
-};
+#define DEFAULT_RAM_SIZE 128
+#endif
+/* in ms */
+#define GUI_REFRESH_INTERVAL 30
 
-#define KERNEL_CS     0x10
-#define KERNEL_DS     0x18
+/* 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
 
-static const char *bios_dir = CONFIG_QEMU_SHAREDIR;
+const char *bios_dir = CONFIG_QEMU_SHAREDIR;
 char phys_ram_file[1024];
-CPUState *global_env;
-CPUState *cpu_single_env;
+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;
-int term_inited;
+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;
 
 /***********************************************************/
-/* x86 io ports */
+/* x86 ISA bus support */
+
+target_phys_addr_t isa_mem_base = 0;
+PicState2 *isa_pic;
 
-uint32_t default_ioport_readb(CPUState *env, uint32_t address)
+uint32_t default_ioport_readb(void *opaque, uint32_t address)
 {
 #ifdef DEBUG_UNUSED_IOPORT
     fprintf(stderr, "inb: port=0x%04x\n", address);
@@ -241,7 +174,7 @@ uint32_t default_ioport_readb(CPUState *env, uint32_t address)
     return 0xff;
 }
 
-void default_ioport_writeb(CPUState *env, uint32_t address, uint32_t data)
+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);
@@ -249,21 +182,23 @@ void default_ioport_writeb(CPUState *env, uint32_t address, uint32_t data)
 }
 
 /* default is to make two byte accesses */
-uint32_t default_ioport_readw(CPUState *env, uint32_t address)
+uint32_t default_ioport_readw(void *opaque, uint32_t address)
 {
     uint32_t data;
-    data = ioport_read_table[0][address & (MAX_IOPORTS - 1)](env, address);
-    data |= ioport_read_table[0][(address + 1) & (MAX_IOPORTS - 1)](env, address + 1) << 8;
+    data = ioport_read_table[0][address](ioport_opaque[address], address);
+    address = (address + 1) & (MAX_IOPORTS - 1);
+    data |= ioport_read_table[0][address](ioport_opaque[address], address) << 8;
     return data;
 }
 
-void default_ioport_writew(CPUState *env, uint32_t address, uint32_t data)
+void default_ioport_writew(void *opaque, uint32_t address, uint32_t data)
 {
-    ioport_write_table[0][address & (MAX_IOPORTS - 1)](env, address, data & 0xff);
-    ioport_write_table[0][(address + 1) & (MAX_IOPORTS - 1)](env, address + 1, (data >> 8) & 0xff);
+    ioport_write_table[0][address](ioport_opaque[address], address, data & 0xff);
+    address = (address + 1) & (MAX_IOPORTS - 1);
+    ioport_write_table[0][address](ioport_opaque[address], address, (data >> 8) & 0xff);
 }
 
-uint32_t default_ioport_readl(CPUState *env, uint32_t address)
+uint32_t default_ioport_readl(void *opaque, uint32_t address)
 {
 #ifdef DEBUG_UNUSED_IOPORT
     fprintf(stderr, "inl: port=0x%04x\n", address);
@@ -271,7 +206,7 @@ uint32_t default_ioport_readl(CPUState *env, uint32_t address)
     return 0xffffffff;
 }
 
-void default_ioport_writel(CPUState *env, uint32_t address, uint32_t data)
+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);
@@ -293,41 +228,72 @@ void init_ioports(void)
 }
 
 /* size is the word size in byte */
-int register_ioport_read(int start, int length, IOPortReadFunc *func, int size)
+int register_ioport_read(int start, int length, int size, 
+                         IOPortReadFunc *func, void *opaque)
 {
     int i, bsize;
 
-    if (size == 1)
+    if (size == 1) {
         bsize = 0;
-    else if (size == 2)
+    } else if (size == 2) {
         bsize = 1;
-    else if (size == 4)
+    } else if (size == 4) {
         bsize = 2;
-    else
+    } else {
+        hw_error("register_ioport_read: invalid size");
         return -1;
-    for(i = start; i < start + length; i += size)
+    }
+    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, IOPortWriteFunc *func, int size)
+int register_ioport_write(int start, int length, int size, 
+                          IOPortWriteFunc *func, void *opaque)
 {
     int i, bsize;
 
-    if (size == 1)
+    if (size == 1) {
         bsize = 0;
-    else if (size == 2)
+    } else if (size == 2) {
         bsize = 1;
-    else if (size == 4)
+    } else if (size == 4) {
         bsize = 2;
-    else
+    } else {
+        hw_error("register_ioport_write: invalid size");
         return -1;
-    for(i = start; i < start + length; i += size)
+    }
+    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;
@@ -355,657 +321,172 @@ char *pstrcat(char *buf, int buf_size, const char *s)
     return buf;
 }
 
-int load_kernel(const char *filename, uint8_t *addr)
-{
-    int fd, size;
-#if defined (TARGET_I386)
-    int setup_sects;
-    uint8_t bootsect[512];
-#endif
-
-    printf("Load kernel at %p (0x%08x)\n", addr,
-           (uint32_t)addr - (uint32_t)phys_ram_base);
-    fd = open(filename, O_RDONLY);
-    if (fd < 0)
-        return -1;
-#if defined (TARGET_I386)
-    if (read(fd, bootsect, 512) != 512)
-        goto fail;
-    setup_sects = bootsect[0x1F1];
-    if (!setup_sects)
-        setup_sects = 4;
-    /* skip 16 bit setup code */
-    lseek(fd, (setup_sects + 1) * 512, SEEK_SET);
-#endif
-    size = read(fd, addr, 16 * 1024 * 1024);
-    if (size < 0)
-        goto fail;
-    close(fd);
-    return size;
- fail:
-    close(fd);
-    return -1;
-}
-
-/* return the size or -1 if error */
-int load_image(const char *filename, uint8_t *addr)
+int strstart(const char *str, const char *val, const char **ptr)
 {
-    int fd, size;
-    fd = open(filename, O_RDONLY);
-    if (fd < 0)
-        return -1;
-    size = lseek(fd, 0, SEEK_END);
-    lseek(fd, 0, SEEK_SET);
-    if (read(fd, addr, size) != size) {
-        close(fd);
-        return -1;
+    const char *p, *q;
+    p = str;
+    q = val;
+    while (*q != '\0') {
+        if (*p != *q)
+            return 0;
+        p++;
+        q++;
     }
-    close(fd);
-    return size;
+    if (ptr)
+        *ptr = p;
+    return 1;
 }
 
 void cpu_outb(CPUState *env, int addr, int val)
 {
-    ioport_write_table[0][addr & (MAX_IOPORTS - 1)](env, addr, 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)
 {
-    ioport_write_table[1][addr & (MAX_IOPORTS - 1)](env, addr, 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)
 {
-    ioport_write_table[2][addr & (MAX_IOPORTS - 1)](env, addr, 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)
 {
-    return ioport_read_table[0][addr & (MAX_IOPORTS - 1)](env, 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)
 {
-    return ioport_read_table[1][addr & (MAX_IOPORTS - 1)](env, 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)
 {
-    return ioport_read_table[2][addr & (MAX_IOPORTS - 1)](env, 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 ioport80_write(CPUState *env, uint32_t addr, uint32_t data)
-{
-}
-
 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_x86_dump_state(global_env, stderr, X86_DUMP_FPU | X86_DUMP_CCOP);
+        cpu_dump_state(env, stderr, fprintf, X86_DUMP_FPU);
 #else
-    cpu_dump_state(global_env, stderr, 0);
+        cpu_dump_state(env, stderr, fprintf, 0);
 #endif
+    }
     va_end(ap);
     abort();
 }
 
 /***********************************************************/
-/* cmos emulation */
-
-#if defined (TARGET_I386)
-#define RTC_SECONDS             0
-#define RTC_SECONDS_ALARM       1
-#define RTC_MINUTES             2
-#define RTC_MINUTES_ALARM       3
-#define RTC_HOURS               4
-#define RTC_HOURS_ALARM         5
-#define RTC_ALARM_DONT_CARE    0xC0
-
-#define RTC_DAY_OF_WEEK         6
-#define RTC_DAY_OF_MONTH        7
-#define RTC_MONTH               8
-#define RTC_YEAR                9
-
-#define RTC_REG_A               10
-#define RTC_REG_B               11
-#define RTC_REG_C               12
-#define RTC_REG_D               13
-
-/* PC cmos mappings */
-#define REG_EQUIPMENT_BYTE          0x14
-#define REG_IBM_CENTURY_BYTE        0x32
-
-uint8_t cmos_data[128];
-uint8_t cmos_index;
-
-void cmos_ioport_write(CPUState *env, uint32_t addr, uint32_t data)
-{
-    if (addr == 0x70) {
-        cmos_index = data & 0x7f;
-    } else {
-#ifdef DEBUG_CMOS
-        printf("cmos: write index=0x%02x val=0x%02x\n",
-               cmos_index, data);
-#endif        
-        switch(addr) {
-        case RTC_SECONDS_ALARM:
-        case RTC_MINUTES_ALARM:
-        case RTC_HOURS_ALARM:
-            /* XXX: not supported */
-            cmos_data[cmos_index] = data;
-            break;
-        case RTC_SECONDS:
-        case RTC_MINUTES:
-        case RTC_HOURS:
-        case RTC_DAY_OF_WEEK:
-        case RTC_DAY_OF_MONTH:
-        case RTC_MONTH:
-        case RTC_YEAR:
-            cmos_data[cmos_index] = data;
-            break;
-        case RTC_REG_A:
-        case RTC_REG_B:
-            cmos_data[cmos_index] = data;
-            break;
-        case RTC_REG_C:
-        case RTC_REG_D:
-            /* cannot write to them */
-            break;
-        default:
-            cmos_data[cmos_index] = data;
-            break;
-        }
-    }
-}
-
-uint32_t cmos_ioport_read(CPUState *env, uint32_t addr)
-{
-    int ret;
-
-    if (addr == 0x70) {
-        return 0xff;
-    } else {
-        ret = cmos_data[cmos_index];
-        switch(cmos_index) {
-        case RTC_REG_A:
-            /* toggle update-in-progress bit for Linux (same hack as
-               plex86) */
-            cmos_data[RTC_REG_A] ^= 0x80; 
-            break;
-        case RTC_REG_C:
-            pic_set_irq(8, 0);
-            cmos_data[RTC_REG_C] = 0x00; 
-            break;
-        }
-#ifdef DEBUG_CMOS
-        printf("cmos: read index=0x%02x val=0x%02x\n",
-               cmos_index, ret);
-#endif
-        return ret;
-    }
-}
-
-
-static inline int to_bcd(int a)
-{
-    return ((a / 10) << 4) | (a % 10);
-}
-
-void cmos_init(void)
-{
-    struct tm *tm;
-    time_t ti;
-    int val;
-
-    ti = time(NULL);
-    tm = gmtime(&ti);
-    cmos_data[RTC_SECONDS] = to_bcd(tm->tm_sec);
-    cmos_data[RTC_MINUTES] = to_bcd(tm->tm_min);
-    cmos_data[RTC_HOURS] = to_bcd(tm->tm_hour);
-    cmos_data[RTC_DAY_OF_WEEK] = to_bcd(tm->tm_wday);
-    cmos_data[RTC_DAY_OF_MONTH] = to_bcd(tm->tm_mday);
-    cmos_data[RTC_MONTH] = to_bcd(tm->tm_mon + 1);
-    cmos_data[RTC_YEAR] = to_bcd(tm->tm_year % 100);
-
-    cmos_data[RTC_REG_A] = 0x26;
-    cmos_data[RTC_REG_B] = 0x02;
-    cmos_data[RTC_REG_C] = 0x00;
-    cmos_data[RTC_REG_D] = 0x80;
-
-    /* various important CMOS locations needed by PC/Bochs bios */
-    cmos_data[REG_IBM_CENTURY_BYTE] = to_bcd((tm->tm_year / 100) + 19);
-
-    cmos_data[REG_EQUIPMENT_BYTE] = 0x02; /* FPU is there */
-    cmos_data[REG_EQUIPMENT_BYTE] |= 0x04; /* PS/2 mouse installed */
-
-    /* memory size */
-    val = (phys_ram_size / 1024) - 1024;
-    if (val > 65535)
-        val = 65535;
-    cmos_data[0x17] = val;
-    cmos_data[0x18] = val >> 8;
-    cmos_data[0x30] = val;
-    cmos_data[0x31] = val >> 8;
-
-    val = (phys_ram_size / 65536) - ((16 * 1024 * 1024) / 65536);
-    if (val > 65535)
-        val = 65535;
-    cmos_data[0x34] = val;
-    cmos_data[0x35] = val >> 8;
-    
-    switch(boot_device) {
-    case 'a':
-    case 'b':
-        cmos_data[0x3d] = 0x01; /* floppy boot */
-        break;
-    default:
-    case 'c':
-        cmos_data[0x3d] = 0x02; /* hard drive boot */
-        break;
-    case 'd':
-        cmos_data[0x3d] = 0x03; /* CD-ROM boot */
-        break;
-    }
-
-    register_ioport_write(0x70, 2, cmos_ioport_write, 1);
-    register_ioport_read(0x70, 2, cmos_ioport_read, 1);
-}
-
-void cmos_register_fd (uint8_t fd0, uint8_t fd1)
-{
-    int nb = 0;
-
-    cmos_data[0x10] = 0;
-    switch (fd0) {
-    case 0:
-        /* 1.44 Mb 3"5 drive */
-        cmos_data[0x10] |= 0x40;
-        break;
-    case 1:
-        /* 2.88 Mb 3"5 drive */
-        cmos_data[0x10] |= 0x60;
-        break;
-    case 2:
-        /* 1.2 Mb 5"5 drive */
-        cmos_data[0x10] |= 0x20;
-        break;
-    }
-    switch (fd1) {
-    case 0:
-        /* 1.44 Mb 3"5 drive */
-        cmos_data[0x10] |= 0x04;
-        break;
-    case 1:
-        /* 2.88 Mb 3"5 drive */
-        cmos_data[0x10] |= 0x06;
-        break;
-    case 2:
-        /* 1.2 Mb 5"5 drive */
-        cmos_data[0x10] |= 0x02;
-        break;
-    }
-    if (fd0 < 3)
-        nb++;
-    if (fd1 < 3)
-        nb++;
-    switch (nb) {
-    case 0:
-        break;
-    case 1:
-        cmos_data[REG_EQUIPMENT_BYTE] |= 0x01; /* 1 drive, ready for boot */
-        break;
-    case 2:
-        cmos_data[REG_EQUIPMENT_BYTE] |= 0x41; /* 2 drives, ready for boot */
-        break;
-    }
-}
-#endif /* TARGET_I386 */
-
-/***********************************************************/
-/* 8259 pic emulation */
-
-typedef struct PicState {
-    uint8_t last_irr; /* edge detection */
-    uint8_t irr; /* interrupt request register */
-    uint8_t imr; /* interrupt mask register */
-    uint8_t isr; /* interrupt service register */
-    uint8_t priority_add; /* used to compute irq priority */
-    uint8_t irq_base;
-    uint8_t read_reg_select;
-    uint8_t poll;
-    uint8_t special_mask;
-    uint8_t init_state;
-    uint8_t auto_eoi;
-    uint8_t rotate_on_autoeoi;
-    uint8_t init4; /* true if 4 byte init */
-} PicState;
-
-/* 0 is master pic, 1 is slave pic */
-PicState pics[2];
-int pic_irq_requested;
-
-/* set irq level. If an edge is detected, then the IRR is set to 1 */
-static inline void pic_set_irq1(PicState *s, int irq, int level)
-{
-    int mask;
-    mask = 1 << irq;
-    if (level) {
-        if ((s->last_irr & mask) == 0)
-            s->irr |= mask;
-        s->last_irr |= mask;
-    } else {
-        s->last_irr &= ~mask;
-    }
-}
-
-static inline int get_priority(PicState *s, int mask)
-{
-    int priority;
-    if (mask == 0)
-        return -1;
-    priority = 7;
-    while ((mask & (1 << ((priority + s->priority_add) & 7))) == 0)
-        priority--;
-    return priority;
-}
-
-/* return the pic wanted interrupt. return -1 if none */
-static int pic_get_irq(PicState *s)
-{
-    int mask, cur_priority, priority;
+/* keyboard/mouse */
 
-    mask = s->irr & ~s->imr;
-    priority = get_priority(s, mask);
-    if (priority < 0)
-        return -1;
-    /* compute current priority */
-    cur_priority = get_priority(s, s->isr);
-    if (priority > cur_priority) {
-        /* higher priority found: an irq should be generated */
-        return priority;
-    } else {
-        return -1;
-    }
-}
-
-/* raise irq to CPU if necessary. must be called every time the active
-   irq may change */
-void pic_update_irq(void)
-{
-    int irq2, irq;
-
-    /* first look at slave pic */
-    irq2 = pic_get_irq(&pics[1]);
-    if (irq2 >= 0) {
-        /* if irq request by slave pic, signal master PIC */
-        pic_set_irq1(&pics[0], 2, 1);
-        pic_set_irq1(&pics[0], 2, 0);
-    }
-    /* look at requested irq */
-    irq = pic_get_irq(&pics[0]);
-    if (irq >= 0) {
-        if (irq == 2) {
-            /* from slave pic */
-            pic_irq_requested = 8 + irq2;
-        } else {
-            /* from master pic */
-            pic_irq_requested = irq;
-        }
-        cpu_interrupt(global_env, CPU_INTERRUPT_HARD);
-    }
-}
-
-#ifdef DEBUG_IRQ_LATENCY
-int64_t irq_time[16];
-int64_t cpu_get_ticks(void);
-#endif
-#if defined(DEBUG_PIC)
-int irq_level[16];
-#endif
+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 pic_set_irq(int irq, int level)
+void qemu_add_kbd_event_handler(QEMUPutKBDEvent *func, void *opaque)
 {
-#if defined(DEBUG_PIC)
-    if (level != irq_level[irq]) {
-        printf("pic_set_irq: irq=%d level=%d\n", irq, level);
-        irq_level[irq] = level;
-    }
-#endif
-#ifdef DEBUG_IRQ_LATENCY
-    if (level) {
-        irq_time[irq] = cpu_get_ticks();
-    }
-#endif
-    pic_set_irq1(&pics[irq >> 3], irq & 7, level);
-    pic_update_irq();
+    qemu_put_kbd_event_opaque = opaque;
+    qemu_put_kbd_event = func;
 }
 
-int cpu_x86_get_pic_interrupt(CPUState *env)
+void qemu_add_mouse_event_handler(QEMUPutMouseEvent *func, void *opaque, int absolute)
 {
-    int irq, irq2, intno;
-
-    /* signal the pic that the irq was acked by the CPU */
-    irq = pic_irq_requested;
-#ifdef DEBUG_IRQ_LATENCY
-    printf("IRQ%d latency=%0.3fus\n", 
-           irq, 
-           (double)(cpu_get_ticks() - irq_time[irq]) * 1000000.0 / ticks_per_sec);
-#endif
-#if defined(DEBUG_PIC)
-    printf("pic_interrupt: irq=%d\n", irq);
-#endif
-
-    if (irq >= 8) {
-        irq2 = irq & 7;
-        pics[1].isr |= (1 << irq2);
-        pics[1].irr &= ~(1 << irq2);
-        irq = 2;
-        intno = pics[1].irq_base + irq2;
-    } else {
-        intno = pics[0].irq_base + irq;
-    }
-    pics[0].isr |= (1 << irq);
-    pics[0].irr &= ~(1 << irq);
-    return intno;
-}
-
-void pic_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
-{
-    PicState *s;
-    int priority;
-
-#ifdef DEBUG_PIC
-    printf("pic_write: addr=0x%02x val=0x%02x\n", addr, val);
-#endif
-    s = &pics[addr >> 7];
-    addr &= 1;
-    if (addr == 0) {
-        if (val & 0x10) {
-            /* init */
-            memset(s, 0, sizeof(PicState));
-            s->init_state = 1;
-            s->init4 = val & 1;
-            if (val & 0x02)
-                hw_error("single mode not supported");
-            if (val & 0x08)
-                hw_error("level sensitive irq not supported");
-        } else if (val & 0x08) {
-            if (val & 0x04) {
-                s->poll = 1;
-            } else {
-            if (val & 0x02)
-                s->read_reg_select = val & 1;
-            if (val & 0x40)
-                s->special_mask = (val >> 5) & 1;
-            }
-        } else {
-            switch(val) {
-            case 0x00:
-            case 0x80:
-                s->rotate_on_autoeoi = val >> 7;
-                break;
-            case 0x20: /* end of interrupt */
-            case 0xa0:
-                priority = get_priority(s, s->isr);
-                if (priority >= 0) {
-                    s->isr &= ~(1 << ((priority + s->priority_add) & 7));
-                }
-                if (val == 0xa0)
-                    s->priority_add = (s->priority_add + 1) & 7;
-                pic_update_irq();
-                break;
-            case 0x60 ... 0x67:
-                priority = val & 7;
-                s->isr &= ~(1 << priority);
-                pic_update_irq();
-                break;
-            case 0xc0 ... 0xc7:
-                s->priority_add = (val + 1) & 7;
-                pic_update_irq();
-                break;
-            case 0xe0 ... 0xe7:
-                priority = val & 7;
-                s->isr &= ~(1 << priority);
-                s->priority_add = (priority + 1) & 7;
-                pic_update_irq();
-                break;
-            }
-        }
-    } else {
-        switch(s->init_state) {
-        case 0:
-            /* normal mode */
-            s->imr = val;
-            pic_update_irq();
-            break;
-        case 1:
-            s->irq_base = val & 0xf8;
-            s->init_state = 2;
-            break;
-        case 2:
-            if (s->init4) {
-                s->init_state = 3;
-            } else {
-                s->init_state = 0;
-            }
-            break;
-        case 3:
-            s->auto_eoi = (val >> 1) & 1;
-            s->init_state = 0;
-            break;
-        }
-    }
+    qemu_put_mouse_event_opaque = opaque;
+    qemu_put_mouse_event = func;
+    qemu_put_mouse_event_absolute = absolute;
 }
 
-static uint32_t pic_poll_read (PicState *s, uint32_t addr1)
+void kbd_put_keycode(int keycode)
 {
-    int ret;
-
-    ret = pic_get_irq(s);
-    if (ret >= 0) {
-        if (addr1 >> 7) {
-            pics[0].isr &= ~(1 << 2);
-            pics[0].irr &= ~(1 << 2);
-        }
-        s->irr &= ~(1 << ret);
-        s->isr &= ~(1 << ret);
-        if (addr1 >> 7 || ret != 2)
-            pic_update_irq();
-    } else {
-        ret = 0x07;
-        pic_update_irq();
+    if (qemu_put_kbd_event) {
+        qemu_put_kbd_event(qemu_put_kbd_event_opaque, keycode);
     }
-
-    return ret;
 }
 
-uint32_t pic_ioport_read(CPUState *env, uint32_t addr1)
+void kbd_mouse_event(int dx, int dy, int dz, int buttons_state)
 {
-    PicState *s;
-    unsigned int addr;
-    int ret;
-
-    addr = addr1;
-    s = &pics[addr >> 7];
-    addr &= 1;
-    if (s->poll == 1) {
-        ret = pic_poll_read(s, addr1);
-        s->poll = 0;
-    } else {
-    if (addr == 0) {
-        if (s->read_reg_select)
-            ret = s->isr;
-        else
-            ret = s->irr;
-    } else {
-        ret = s->imr;
+    if (qemu_put_mouse_event) {
+        qemu_put_mouse_event(qemu_put_mouse_event_opaque, 
+                             dx, dy, dz, buttons_state);
     }
-    }
-#ifdef DEBUG_PIC
-    printf("pic_read: addr=0x%02x val=0x%02x\n", addr1, ret);
-#endif
-    return ret;
-}
-
-/* memory mapped interrupt status */
-uint32_t pic_intack_read(CPUState *env)
-{
-    int ret;
-
-    ret = pic_poll_read(&pics[0], 0x00);
-    if (ret == 2)
-        ret = pic_poll_read(&pics[1], 0x80) + 8;
-    /* Prepare for ISR read */
-    pics[0].read_reg_select = 1;
-    
-    return ret;
 }
 
-void pic_init(void)
+int kbd_mouse_is_absolute(void)
 {
-#if defined (TARGET_I386) || defined (TARGET_PPC)
-    register_ioport_write(0x20, 2, pic_ioport_write, 1);
-    register_ioport_read(0x20, 2, pic_ioport_read, 1);
-    register_ioport_write(0xa0, 2, pic_ioport_write, 1);
-    register_ioport_read(0xa0, 2, pic_ioport_read, 1);
-#endif
+    return qemu_put_mouse_event_absolute;
 }
 
 /***********************************************************/
-/* 8253 PIT emulation */
-
-#define PIT_FREQ 1193182
-
-#define RW_STATE_LSB 0
-#define RW_STATE_MSB 1
-#define RW_STATE_WORD0 2
-#define RW_STATE_WORD1 3
-#define RW_STATE_LATCHED_WORD0 4
-#define RW_STATE_LATCHED_WORD1 5
-
-typedef struct PITChannelState {
-    int count; /* can be 65536 */
-    uint16_t latched_count;
-    uint8_t rw_state;
-    uint8_t mode;
-    uint8_t bcd; /* not supported */
-    uint8_t gate; /* timer start */
-    int64_t count_load_time;
-    int64_t count_last_edge_check_time;
-} PITChannelState;
-
-PITChannelState pit_channels[3];
-int speaker_data_on;
-int dummy_refresh_clock;
-int pit_min_timer_count = 0;
-
+/* timers */
 
 #if defined(__powerpc__)
 
@@ -1039,37 +520,108 @@ int64_t cpu_get_real_ticks(void)
 
 int64_t cpu_get_real_ticks(void)
 {
+#ifdef _WIN32
+    LARGE_INTEGER ti;
+    QueryPerformanceCounter(&ti);
+    return ti.QuadPart;
+#else
     int64_t val;
-    asm("rdtsc" : "=A" (val));
+    asm volatile ("rdtsc" : "=A" (val));
     return val;
-}
-
-#else
-#error unsupported CPU
 #endif
+}
 
-static int64_t cpu_ticks_offset;
-static int64_t cpu_ticks_last;
+#elif defined(__x86_64__)
 
-int64_t cpu_get_ticks(void)
+int64_t cpu_get_real_ticks(void)
+{
+    uint32_t low,high;
+    int64_t val;
+    asm volatile("rdtsc" : "=a" (low), "=d" (high));
+    val = high;
+    val <<= 32;
+    val |= low;
+    return val;
+}
+
+#elif defined(__ia64)
+
+int64_t cpu_get_real_ticks(void)
+{
+       int64_t val;
+       asm volatile ("mov %0 = ar.itc" : "=r"(val) :: "memory");
+       return val;
+}
+
+#elif defined(__s390__)
+
+int64_t cpu_get_real_ticks(void)
+{
+    int64_t val;
+    asm volatile("stck 0(%1)" : "=m" (val) : "a" (&val) : "cc");
+    return val;
+}
+
+#else
+#error unsupported CPU
+#endif
+
+static int64_t cpu_ticks_prev;
+static int64_t cpu_ticks_offset;
+static int cpu_ticks_enabled;
+
+static inline int64_t cpu_get_ticks(void)
 {
-    return cpu_get_real_ticks() + cpu_ticks_offset;
+    if (!cpu_ticks_enabled) {
+        return cpu_ticks_offset;
+    } else {
+        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;
+    }
 }
 
 /* enable cpu_get_ticks() */
 void cpu_enable_ticks(void)
 {
-    cpu_ticks_offset = cpu_ticks_last - cpu_get_real_ticks();
+    if (!cpu_ticks_enabled) {
+        cpu_ticks_offset -= cpu_get_real_ticks();
+        cpu_ticks_enabled = 1;
+    }
 }
 
 /* disable cpu_get_ticks() : the clock is stopped. You must not call
    cpu_get_ticks() after that.  */
 void cpu_disable_ticks(void)
 {
-    cpu_ticks_last = cpu_get_ticks();
+    if (cpu_ticks_enabled) {
+        cpu_ticks_offset = cpu_get_ticks();
+        cpu_ticks_enabled = 0;
+    }
+}
+
+#ifdef _WIN32
+void cpu_calibrate_ticks(void)
+{
+    LARGE_INTEGER freq;
+    int ret;
+
+    ret = QueryPerformanceFrequency(&freq);
+    if (ret == 0) {
+        fprintf(stderr, "Could not calibrate ticks\n");
+        exit(1);
+    }
+    ticks_per_sec = freq.QuadPart;
 }
 
-int64_t get_clock(void)
+#else
+static int64_t get_clock(void)
 {
     struct timeval tv;
     gettimeofday(&tv, NULL);
@@ -1081,15 +633,16 @@ void cpu_calibrate_ticks(void)
     int64_t usec, ticks;
 
     usec = get_clock();
-    ticks = cpu_get_ticks();
+    ticks = cpu_get_real_ticks();
     usleep(50 * 1000);
     usec = get_clock() - usec;
-    ticks = cpu_get_ticks() - ticks;
+    ticks = cpu_get_real_ticks() - ticks;
     ticks_per_sec = (ticks * 1000000LL + (usec >> 1)) / usec;
 }
+#endif /* !_WIN32 */
 
 /* compute with 96 bit intermediate result: (a*b)/c */
-static uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
+uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
 {
     union {
         uint64_t ll;
@@ -1112,2300 +665,4848 @@ static uint64_t muldiv64(uint64_t a, uint32_t b, uint32_t c)
     return res.ll;
 }
 
-static int pit_get_count(PITChannelState *s)
-{
-    uint64_t d;
-    int counter;
+#define QEMU_TIMER_REALTIME 0
+#define QEMU_TIMER_VIRTUAL  1
 
-    d = muldiv64(cpu_get_ticks() - s->count_load_time, PIT_FREQ, ticks_per_sec);
-    switch(s->mode) {
-    case 0:
-    case 1:
-    case 4:
-    case 5:
-        counter = (s->count - d) & 0xffff;
-        break;
-    case 3:
-        /* XXX: may be incorrect for odd counts */
-        counter = s->count - ((2 * d) % s->count);
-        break;
-    default:
-        counter = s->count - (d % s->count);
-        break;
-    }
-    return counter;
+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;
 }
 
-/* get pit output bit */
-static int pit_get_out(PITChannelState *s)
+QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque)
 {
-    uint64_t d;
-    int out;
+    QEMUTimer *ts;
 
-    d = muldiv64(cpu_get_ticks() - s->count_load_time, PIT_FREQ, ticks_per_sec);
-    switch(s->mode) {
-    default:
-    case 0:
-        out = (d >= s->count);
-        break;
-    case 1:
-        out = (d < s->count);
-        break;
-    case 2:
-        if ((d % s->count) == 0 && d != 0)
-            out = 1;
-        else
-            out = 0;
-        break;
-    case 3:
-        out = (d % s->count) < ((s->count + 1) >> 1);
-        break;
-    case 4:
-    case 5:
-        out = (d == s->count);
-        break;
-    }
-    return out;
+    ts = qemu_mallocz(sizeof(QEMUTimer));
+    ts->clock = clock;
+    ts->cb = cb;
+    ts->opaque = opaque;
+    return ts;
 }
 
-/* get the number of 0 to 1 transitions we had since we call this
-   function */
-/* XXX: maybe better to use ticks precision to avoid getting edges
-   twice if checks are done at very small intervals */
-static int pit_get_out_edges(PITChannelState *s)
+void qemu_free_timer(QEMUTimer *ts)
 {
-    uint64_t d1, d2;
-    int64_t ticks;
-    int ret, v;
+    qemu_free(ts);
+}
 
-    ticks = cpu_get_ticks();
-    d1 = muldiv64(s->count_last_edge_check_time - s->count_load_time, 
-                 PIT_FREQ, ticks_per_sec);
-    d2 = muldiv64(ticks - s->count_load_time, 
-                  PIT_FREQ, ticks_per_sec);
-    s->count_last_edge_check_time = ticks;
-    switch(s->mode) {
-    default:
-    case 0:
-        if (d1 < s->count && d2 >= s->count)
-            ret = 1;
-        else
-            ret = 0;
-        break;
-    case 1:
-        ret = 0;
-        break;
-    case 2:
-        d1 /= s->count;
-        d2 /= s->count;
-        ret = d2 - d1;
-        break;
-    case 3:
-        v = s->count - ((s->count + 1) >> 1);
-        d1 = (d1 + v) / s->count;
-        d2 = (d2 + v) / s->count;
-        ret = d2 - d1;
-        break;
-    case 4:
-    case 5:
-        if (d1 < s->count && d2 >= s->count)
-            ret = 1;
-        else
-            ret = 0;
-        break;
+/* 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;
     }
-    return ret;
 }
 
-/* val must be 0 or 1 */
-static inline void pit_set_gate(PITChannelState *s, int val)
+/* 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)
 {
-    switch(s->mode) {
-    default:
-    case 0:
-    case 4:
-        /* XXX: just disable/enable counting */
-        break;
-    case 1:
-    case 5:
-        if (s->gate < val) {
-            /* restart counting on rising edge */
-            s->count_load_time = cpu_get_ticks();
-            s->count_last_edge_check_time = s->count_load_time;
-        }
-        break;
-    case 2:
-    case 3:
-        if (s->gate < val) {
-            /* restart counting on rising edge */
-            s->count_load_time = cpu_get_ticks();
-            s->count_last_edge_check_time = s->count_load_time;
-        }
-        /* XXX: disable/enable counting */
-        break;
+    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;
     }
-    s->gate = val;
+    ts->expire_time = expire_time;
+    ts->next = *pt;
+    *pt = ts;
 }
 
-static inline void pit_load_count(PITChannelState *s, int val)
+int qemu_timer_pending(QEMUTimer *ts)
 {
-    if (val == 0)
-        val = 0x10000;
-    s->count_load_time = cpu_get_ticks();
-    s->count_last_edge_check_time = s->count_load_time;
-    s->count = val;
-    if (s == &pit_channels[0] && val <= pit_min_timer_count) {
-        fprintf(stderr, 
-                "\nWARNING: qemu: on your system, accurate timer emulation is impossible if its frequency is more than %d Hz. If using a 2.5.xx Linux kernel, you must patch asm/param.h to change HZ from 1000 to 100.\n\n", 
-                PIT_FREQ / pit_min_timer_count);
+    QEMUTimer *t;
+    for(t = active_timers[ts->clock->type]; t != NULL; t = t->next) {
+        if (t == ts)
+            return 1;
     }
+    return 0;
 }
 
-void pit_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
+static inline int qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time)
 {
-    int channel, access;
-    PITChannelState *s;
+    if (!timer_head)
+        return 0;
+    return (timer_head->expire_time <= current_time);
+}
 
-    addr &= 3;
-    if (addr == 3) {
-        channel = val >> 6;
-        if (channel == 3)
-            return;
-        s = &pit_channels[channel];
-        access = (val >> 4) & 3;
-        switch(access) {
-        case 0:
-            s->latched_count = pit_get_count(s);
-            s->rw_state = RW_STATE_LATCHED_WORD0;
-            break;
-        default:
-            s->mode = (val >> 1) & 7;
-            s->bcd = val & 1;
-            s->rw_state = access - 1 +  RW_STATE_LSB;
-            break;
-        }
-    } else {
-        s = &pit_channels[addr];
-        switch(s->rw_state) {
-        case RW_STATE_LSB:
-            pit_load_count(s, val);
-            break;
-        case RW_STATE_MSB:
-            pit_load_count(s, val << 8);
+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;
-        case RW_STATE_WORD0:
-        case RW_STATE_WORD1:
-            if (s->rw_state & 1) {
-                pit_load_count(s, (s->latched_count & 0xff) | (val << 8));
+        /* 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:
+#ifdef _WIN32
+        return GetTickCount();
+#else
+        {
+            struct tms tp;
+
+            /* Note that using gettimeofday() is not a good solution
+               for timers because its value change when the date is
+               modified. */
+            if (timer_freq == 100) {
+                return times(&tp) * 10;
             } else {
-                s->latched_count = val;
+                return ((int64_t)times(&tp) * 1000) / timer_freq;
             }
-            s->rw_state ^= 1;
-            break;
         }
+#endif
+    default:
+    case QEMU_TIMER_VIRTUAL:
+        return cpu_get_ticks();
     }
 }
 
-uint32_t pit_ioport_read(CPUState *env, uint32_t addr)
+/* save a timer */
+void qemu_put_timer(QEMUFile *f, QEMUTimer *ts)
 {
-    int ret, count;
-    PITChannelState *s;
-    
-    addr &= 3;
-    s = &pit_channels[addr];
-    switch(s->rw_state) {
-    case RW_STATE_LSB:
-    case RW_STATE_MSB:
-    case RW_STATE_WORD0:
-    case RW_STATE_WORD1:
-        count = pit_get_count(s);
-        if (s->rw_state & 1)
-            ret = (count >> 8) & 0xff;
-        else
-            ret = count & 0xff;
-        if (s->rw_state & 2)
-            s->rw_state ^= 1;
-        break;
-    default:
-    case RW_STATE_LATCHED_WORD0:
-    case RW_STATE_LATCHED_WORD1:
-        if (s->rw_state & 1)
-            ret = s->latched_count >> 8;
-        else
-            ret = s->latched_count & 0xff;
-        s->rw_state ^= 1;
-        break;
+    uint64_t expire_time;
+
+    if (qemu_timer_pending(ts)) {
+        expire_time = ts->expire_time;
+    } else {
+        expire_time = -1;
     }
-    return ret;
+    qemu_put_be64(f, expire_time);
 }
 
-#if defined (TARGET_I386)
-void speaker_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
+void qemu_get_timer(QEMUFile *f, QEMUTimer *ts)
 {
-    speaker_data_on = (val >> 1) & 1;
-    pit_set_gate(&pit_channels[2], val & 1);
+    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);
+    }
 }
 
-uint32_t speaker_ioport_read(CPUState *env, uint32_t addr)
+static void timer_save(QEMUFile *f, void *opaque)
 {
-    int out;
-    out = pit_get_out(&pit_channels[2]);
-    dummy_refresh_clock ^= 1;
-    return (speaker_data_on << 1) | pit_channels[2].gate | (out << 5) |
-      (dummy_refresh_clock << 4);
+    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);
 }
-#endif
 
-void pit_init(void)
+static int timer_load(QEMUFile *f, void *opaque, int version_id)
 {
-    PITChannelState *s;
-    int i;
-
-    cpu_calibrate_ticks();
-
-    for(i = 0;i < 3; i++) {
-        s = &pit_channels[i];
-        s->mode = 3;
-        s->gate = (i != 2);
-        pit_load_count(s, 0);
+    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;
+}
 
-    register_ioport_write(0x40, 4, pit_ioport_write, 1);
-    register_ioport_read(0x40, 3, pit_ioport_read, 1);
-
-#if defined (TARGET_I386)
-    register_ioport_read(0x61, 1, speaker_ioport_read, 1);
-    register_ioport_write(0x61, 1, speaker_ioport_write, 1);
+#ifdef _WIN32
+void CALLBACK host_alarm_handler(UINT uTimerID, UINT uMsg, 
+                                 DWORD_PTR dwUser, DWORD_PTR dw1, DWORD_PTR dw2)
+#else
+static void host_alarm_handler(int host_signum)
+#endif
+{
+#if 0
+#define DISP_FREQ 1000
+    {
+        static int64_t delta_min = INT64_MAX;
+        static int64_t delta_max, delta_cum, last_clock, delta, ti;
+        static int count;
+        ti = qemu_get_clock(vm_clock);
+        if (last_clock != 0) {
+            delta = ti - last_clock;
+            if (delta < delta_min)
+                delta_min = delta;
+            if (delta > delta_max)
+                delta_max = delta;
+            delta_cum += delta;
+            if (++count == DISP_FREQ) {
+                printf("timer: min=%lld us max=%lld us avg=%lld us avg_freq=%0.3f Hz\n",
+                       muldiv64(delta_min, 1000000, ticks_per_sec),
+                       muldiv64(delta_max, 1000000, ticks_per_sec),
+                       muldiv64(delta_cum, 1000000 / DISP_FREQ, ticks_per_sec),
+                       (double)ticks_per_sec / ((double)delta_cum / DISP_FREQ));
+                count = 0;
+                delta_min = INT64_MAX;
+                delta_max = 0;
+                delta_cum = 0;
+            }
+        }
+        last_clock = ti;
+    }
 #endif
+    if (qemu_timer_expired(active_timers[QEMU_TIMER_VIRTUAL],
+                           qemu_get_clock(vm_clock)) ||
+        qemu_timer_expired(active_timers[QEMU_TIMER_REALTIME],
+                           qemu_get_clock(rt_clock))) {
+#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
+        }
+    }
 }
 
-/***********************************************************/
-/* serial port emulation */
-
-#define UART_IRQ        4
-
-#define UART_LCR_DLAB  0x80    /* Divisor latch access bit */
+#ifndef _WIN32
 
-#define UART_IER_MSI   0x08    /* Enable Modem status interrupt */
-#define UART_IER_RLSI  0x04    /* Enable receiver line status interrupt */
-#define UART_IER_THRI  0x02    /* Enable Transmitter holding register int. */
-#define UART_IER_RDI   0x01    /* Enable receiver data interrupt */
+#if defined(__linux__)
 
-#define UART_IIR_NO_INT        0x01    /* No interrupts pending */
-#define UART_IIR_ID    0x06    /* Mask for the interrupt ID */
+#define RTC_FREQ 1024
 
-#define UART_IIR_MSI   0x00    /* Modem status interrupt */
-#define UART_IIR_THRI  0x02    /* Transmitter holding register empty */
-#define UART_IIR_RDI   0x04    /* Receiver data interrupt */
-#define UART_IIR_RLSI  0x06    /* Receiver line status interrupt */
+static int rtc_fd;
 
-/*
- * These are the definitions for the Modem Control Register
- */
-#define UART_MCR_LOOP  0x10    /* Enable loopback test mode */
-#define UART_MCR_OUT2  0x08    /* Out2 complement */
-#define UART_MCR_OUT1  0x04    /* Out1 complement */
-#define UART_MCR_RTS   0x02    /* RTS complement */
-#define UART_MCR_DTR   0x01    /* DTR complement */
-
-/*
- * These are the definitions for the Modem Status Register
- */
-#define UART_MSR_DCD   0x80    /* Data Carrier Detect */
-#define UART_MSR_RI    0x40    /* Ring Indicator */
-#define UART_MSR_DSR   0x20    /* Data Set Ready */
-#define UART_MSR_CTS   0x10    /* Clear to Send */
-#define UART_MSR_DDCD  0x08    /* Delta DCD */
-#define UART_MSR_TERI  0x04    /* Trailing edge ring indicator */
-#define UART_MSR_DDSR  0x02    /* Delta DSR */
-#define UART_MSR_DCTS  0x01    /* Delta CTS */
-#define UART_MSR_ANY_DELTA 0x0F        /* Any of the delta bits! */
-
-#define UART_LSR_TEMT  0x40    /* Transmitter empty */
-#define UART_LSR_THRE  0x20    /* Transmit-hold-register empty */
-#define UART_LSR_BI    0x10    /* Break interrupt indicator */
-#define UART_LSR_FE    0x08    /* Frame error indicator */
-#define UART_LSR_PE    0x04    /* Parity error indicator */
-#define UART_LSR_OE    0x02    /* Overrun error indicator */
-#define UART_LSR_DR    0x01    /* Receiver data ready */
-
-typedef struct SerialState {
-    uint8_t divider;
-    uint8_t rbr; /* receive register */
-    uint8_t ier;
-    uint8_t iir; /* read only */
-    uint8_t lcr;
-    uint8_t mcr;
-    uint8_t lsr; /* read only */
-    uint8_t msr;
-    uint8_t scr;
-    /* NOTE: this hidden state is necessary for tx irq generation as
-       it can be reset while reading iir */
-    int thr_ipending;
-} SerialState;
-
-SerialState serial_ports[1];
-
-void serial_update_irq(void)
-{
-    SerialState *s = &serial_ports[0];
-
-    if ((s->lsr & UART_LSR_DR) && (s->ier & UART_IER_RDI)) {
-        s->iir = UART_IIR_RDI;
-    } else if (s->thr_ipending && (s->ier & UART_IER_THRI)) {
-        s->iir = UART_IIR_THRI;
-    } else {
-        s->iir = UART_IIR_NO_INT;
+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 (s->iir != UART_IIR_NO_INT) {
-        pic_set_irq(UART_IRQ, 1);
-    } else {
-        pic_set_irq(UART_IRQ, 0);
+    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;
 }
 
-void serial_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
+#else
+
+static int start_rtc_timer(void)
 {
-    SerialState *s = &serial_ports[0];
-    unsigned char ch;
-    int ret;
-    
-    addr &= 7;
-#ifdef DEBUG_SERIAL
-    printf("serial: write addr=0x%02x val=0x%02x\n", addr, val);
-#endif
-    switch(addr) {
-    default:
-    case 0:
-        if (s->lcr & UART_LCR_DLAB) {
-            s->divider = (s->divider & 0xff00) | val;
-        } else {
-            s->thr_ipending = 0;
-            s->lsr &= ~UART_LSR_THRE;
-            serial_update_irq();
-
-            ch = val;
-            do {
-                ret = write(1, &ch, 1);
-            } while (ret != 1);
-            s->thr_ipending = 1;
-            s->lsr |= UART_LSR_THRE;
-            s->lsr |= UART_LSR_TEMT;
-            serial_update_irq();
-        }
-        break;
-    case 1:
-        if (s->lcr & UART_LCR_DLAB) {
-            s->divider = (s->divider & 0x00ff) | (val << 8);
-        } else {
-            s->ier = val;
-            serial_update_irq();
-        }
-        break;
-    case 2:
-        break;
-    case 3:
-        s->lcr = val;
-        break;
-    case 4:
-        s->mcr = val;
-        break;
-    case 5:
-        break;
-    case 6:
-        s->msr = val;
-        break;
-    case 7:
-        s->scr = val;
-        break;
-    }
+    return -1;
 }
 
-uint32_t serial_ioport_read(CPUState *env, uint32_t addr)
+#endif /* !defined(__linux__) */
+
+#endif /* !defined(_WIN32) */
+
+static void init_timers(void)
 {
-    SerialState *s = &serial_ports[0];
-    uint32_t ret;
+    rt_clock = qemu_new_clock(QEMU_TIMER_REALTIME);
+    vm_clock = qemu_new_clock(QEMU_TIMER_VIRTUAL);
 
-    addr &= 7;
-    switch(addr) {
-    default:
-    case 0:
-        if (s->lcr & UART_LCR_DLAB) {
-            ret = s->divider & 0xff; 
-        } else {
-            ret = s->rbr;
-            s->lsr &= ~(UART_LSR_DR | UART_LSR_BI);
-            serial_update_irq();
-        }
-        break;
-    case 1:
-        if (s->lcr & UART_LCR_DLAB) {
-            ret = (s->divider >> 8) & 0xff;
-        } else {
-            ret = s->ier;
+#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);
         }
-        break;
-    case 2:
-        ret = s->iir;
-        /* reset THR pending bit */
-        if ((ret & 0x7) == UART_IIR_THRI)
-            s->thr_ipending = 0;
-        serial_update_irq();
-        break;
-    case 3:
-        ret = s->lcr;
-        break;
-    case 4:
-        ret = s->mcr;
-        break;
-    case 5:
-        ret = s->lsr;
-        break;
-    case 6:
-        if (s->mcr & UART_MCR_LOOP) {
-            /* in loopback, the modem output pins are connected to the
-               inputs */
-            ret = (s->mcr & 0x0c) << 4;
-            ret |= (s->mcr & 0x02) << 3;
-            ret |= (s->mcr & 0x01) << 5;
-        } else {
-            ret = s->msr;
+        ResetEvent(host_alarm);
+    }
+    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;
         }
-        break;
-    case 7:
-        ret = s->scr;
-        break;
     }
-#ifdef DEBUG_SERIAL
-    printf("serial: read addr=0x%02x val=0x%02x\n", addr, ret);
 #endif
-    return ret;
 }
 
-#define TERM_ESCAPE 0x01 /* ctrl-a is used for escape */
-static int term_got_escape, term_command;
-static unsigned char term_cmd_buf[128];
-
-typedef struct term_cmd_t {
-    const unsigned char *name;
-    void (*handler)(unsigned char *params);
-} term_cmd_t;
-
-static void do_change_cdrom (unsigned char *params);
-static void do_change_fd0 (unsigned char *params);
-static void do_change_fd1 (unsigned char *params);
-
-static term_cmd_t term_cmds[] = {
-    { "changecd", &do_change_cdrom, },
-    { "changefd0", &do_change_fd0, },
-    { "changefd1", &do_change_fd1, },
-    { NULL, NULL, },
-};
+void quit_timers(void)
+{
+#ifdef _WIN32
+    timeKillEvent(timerID);
+    timeEndPeriod(period);
+    if (host_alarm) {
+        CloseHandle(host_alarm);
+        host_alarm = NULL;
+    }
+#endif
+}
 
-void term_print_help(void)
+/***********************************************************/
+/* character device */
+
+int qemu_chr_write(CharDriverState *s, const uint8_t *buf, int len)
 {
-    printf("\n"
-           "C-a h    print this help\n"
-           "C-a x    exit emulatior\n"
-           "C-a d    switch on/off debug log\n"
-          "C-a s    save disk data back to file (if -snapshot)\n"
-           "C-a b    send break (magic sysrq)\n"
-           "C-a c    send qemu internal command\n"
-           "C-a C-a  send C-a\n"
-           );
+    return s->chr_write(s, buf, len);
 }
 
-static void do_change_cdrom (unsigned char *params)
+int qemu_chr_ioctl(CharDriverState *s, int cmd, void *arg)
 {
-    /* Dunno how to do it... */
+    if (!s->chr_ioctl)
+        return -ENOTSUP;
+    return s->chr_ioctl(s, cmd, arg);
 }
 
-static void do_change_fd (int fd, unsigned char *params)
+void qemu_chr_printf(CharDriverState *s, const char *fmt, ...)
 {
-    unsigned char *name_start, *name_end, *ros;
-    int ro;
+    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);
+}
 
-    for (name_start = params;
-         isspace(*name_start); name_start++)
-        continue;
-    if (*name_start == '\0')
-        return;
-    for (name_end = name_start;
-         !isspace(*name_end) && *name_end != '\0'; name_end++)
-        continue;
-    for (ros = name_end + 1; isspace(*ros); ros++)
-        continue;
-    if (ros[0] == 'r' && ros[1] == 'o')
-        ro = 1;
-    else
-        ro = 0;
-    *name_end = '\0';
-    printf("Change fd %d to %s (%s)\n", fd, name_start, params);
-    fdctrl_disk_change(fd, name_start, ro);
+void qemu_chr_send_event(CharDriverState *s, int event)
+{
+    if (s->chr_send_event)
+        s->chr_send_event(s, event);
 }
 
-static void do_change_fd0 (unsigned char *params)
+void qemu_chr_add_read_handler(CharDriverState *s, 
+                               IOCanRWHandler *fd_can_read, 
+                               IOReadHandler *fd_read, void *opaque)
 {
-    do_change_fd(0, params);
+    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 void do_change_fd1 (unsigned char *params)
+static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
 {
-    do_change_fd(1, params);
+    return len;
 }
 
-static void serial_treat_command ()
+static void null_chr_add_read_handler(CharDriverState *chr, 
+                                    IOCanRWHandler *fd_can_read, 
+                                    IOReadHandler *fd_read, void *opaque)
 {
-    unsigned char *cmd_start, *cmd_end;
-    int i;
+}
 
-    for (cmd_start = term_cmd_buf; isspace(*cmd_start); cmd_start++)
-        continue;
-    for (cmd_end = cmd_start;
-         !isspace(*cmd_end) && *cmd_end != '\0'; cmd_end++)
-        continue;
-    for (i = 0; term_cmds[i].name != NULL; i++) {
-        if (strlen(term_cmds[i].name) == (cmd_end - cmd_start) &&
-            memcmp(term_cmds[i].name, cmd_start, cmd_end - cmd_start) == 0) {
-            (*term_cmds[i].handler)(cmd_end + 1);
-            return;
-        }
-    }
-    *cmd_end = '\0';
-    printf("Unknown term command: %s\n", cmd_start);
+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;
 }
 
-extern FILE *logfile;
+#ifdef _WIN32
 
-/* called when a char is received */
-void serial_received_byte(SerialState *s, int ch)
+static void socket_cleanup(void)
 {
-    if (term_command) {
-        if (ch == '\n' || ch == '\r' || term_command == 127) {
-            printf("\n");
-            serial_treat_command();
-            term_command = 0;
-        } else {
-            if (ch == 0x7F || ch == 0x08) {
-                if (term_command > 1) {
-                    term_cmd_buf[--term_command - 1] = '\0';
-                    printf("\r                                               "
-                           "                               ");
-                    printf("\r> %s", term_cmd_buf);
-                }
-            } else if (ch > 0x1f) {
-                term_cmd_buf[term_command++ - 1] = ch;
-                term_cmd_buf[term_command - 1] = '\0';
-                printf("\r> %s", term_cmd_buf);
+    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;
             }
-            fflush(stdout);
-        }
-    } else 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]);
-                }
-           }
+        } else if (ret == 0) {
             break;
-        case 'b':
-            /* send break */
-            s->rbr = 0;
-            s->lsr |= UART_LSR_BI | UART_LSR_DR;
-            serial_update_irq();
-            break;
-        case 'c':
-            printf("> ");
-            fflush(stdout);
-            term_command = 1;
-            break;
-        case TERM_ESCAPE:
-            goto send_char;
+        } else {
+            buf += ret;
+            len -= ret;
         }
-    } else if (ch == TERM_ESCAPE) {
-        term_got_escape = 1;
-    } else {
-    send_char:
-        s->rbr = ch;
-        s->lsr |= UART_LSR_DR;
-        serial_update_irq();
     }
+    return len1 - len;
 }
 
-void serial_init(void)
+void socket_set_nonblock(int fd)
 {
-    SerialState *s = &serial_ports[0];
-
-    s->lsr = UART_LSR_TEMT | UART_LSR_THRE;
-    s->iir = UART_IIR_NO_INT;
-    
-#if defined(TARGET_I386) || defined (TARGET_PPC)
-    register_ioport_write(0x3f8, 8, serial_ioport_write, 1);
-    register_ioport_read(0x3f8, 8, serial_ioport_read, 1);
-#endif
+    unsigned long opt = 1;
+    ioctlsocket(fd, FIONBIO, &opt);
 }
 
-/***********************************************************/
-/* ne2000 emulation */
-
-#if defined (TARGET_I386)
-#define NE2000_IOPORT   0x300
-#define NE2000_IRQ      9
-
-#define MAX_ETH_FRAME_SIZE 1514
-
-#define E8390_CMD      0x00  /* The command register (for all pages) */
-/* Page 0 register offsets. */
-#define EN0_CLDALO     0x01    /* Low byte of current local dma addr  RD */
-#define EN0_STARTPG    0x01    /* Starting page of ring bfr WR */
-#define EN0_CLDAHI     0x02    /* High byte of current local dma addr  RD */
-#define EN0_STOPPG     0x02    /* Ending page +1 of ring bfr WR */
-#define EN0_BOUNDARY   0x03    /* Boundary page of ring bfr RD WR */
-#define EN0_TSR                0x04    /* Transmit status reg RD */
-#define EN0_TPSR       0x04    /* Transmit starting page WR */
-#define EN0_NCR                0x05    /* Number of collision reg RD */
-#define EN0_TCNTLO     0x05    /* Low  byte of tx byte count WR */
-#define EN0_FIFO       0x06    /* FIFO RD */
-#define EN0_TCNTHI     0x06    /* High byte of tx byte count WR */
-#define EN0_ISR                0x07    /* Interrupt status reg RD WR */
-#define EN0_CRDALO     0x08    /* low byte of current remote dma address RD */
-#define EN0_RSARLO     0x08    /* Remote start address reg 0 */
-#define EN0_CRDAHI     0x09    /* high byte, current remote dma address RD */
-#define EN0_RSARHI     0x09    /* Remote start address reg 1 */
-#define EN0_RCNTLO     0x0a    /* Remote byte count reg WR */
-#define EN0_RCNTHI     0x0b    /* Remote byte count reg WR */
-#define EN0_RSR                0x0c    /* rx status reg RD */
-#define EN0_RXCR       0x0c    /* RX configuration reg WR */
-#define EN0_TXCR       0x0d    /* TX configuration reg WR */
-#define EN0_COUNTER0   0x0d    /* Rcv alignment error counter RD */
-#define EN0_DCFG       0x0e    /* Data configuration reg WR */
-#define EN0_COUNTER1   0x0e    /* Rcv CRC error counter RD */
-#define EN0_IMR                0x0f    /* Interrupt mask reg WR */
-#define EN0_COUNTER2   0x0f    /* Rcv missed frame error counter RD */
-
-#define EN1_PHYS        0x11
-#define EN1_CURPAG      0x17
-#define EN1_MULT        0x18
-
-/*  Register accessed at EN_CMD, the 8390 base addr.  */
-#define E8390_STOP     0x01    /* Stop and reset the chip */
-#define E8390_START    0x02    /* Start the chip, clear reset */
-#define E8390_TRANS    0x04    /* Transmit a frame */
-#define E8390_RREAD    0x08    /* Remote read */
-#define E8390_RWRITE   0x10    /* Remote write  */
-#define E8390_NODMA    0x20    /* Remote DMA */
-#define E8390_PAGE0    0x00    /* Select page chip registers */
-#define E8390_PAGE1    0x40    /* using the two high-order bits */
-#define E8390_PAGE2    0x80    /* Page 3 is invalid. */
-
-/* Bits in EN0_ISR - Interrupt status register */
-#define ENISR_RX       0x01    /* Receiver, no error */
-#define ENISR_TX       0x02    /* Transmitter, no error */
-#define ENISR_RX_ERR   0x04    /* Receiver, with error */
-#define ENISR_TX_ERR   0x08    /* Transmitter, with error */
-#define ENISR_OVER     0x10    /* Receiver overwrote the ring */
-#define ENISR_COUNTERS 0x20    /* Counters need emptying */
-#define ENISR_RDC      0x40    /* remote dma complete */
-#define ENISR_RESET    0x80    /* Reset completed */
-#define ENISR_ALL      0x3f    /* Interrupts we will enable */
-
-/* Bits in received packet status byte and EN0_RSR*/
-#define ENRSR_RXOK     0x01    /* Received a good packet */
-#define ENRSR_CRC      0x02    /* CRC error */
-#define ENRSR_FAE      0x04    /* frame alignment error */
-#define ENRSR_FO       0x08    /* FIFO overrun */
-#define ENRSR_MPA      0x10    /* missed pkt */
-#define ENRSR_PHY      0x20    /* physical/multicast address */
-#define ENRSR_DIS      0x40    /* receiver disable. set in monitor mode */
-#define ENRSR_DEF      0x80    /* deferring */
-
-/* Transmitted packet status, EN0_TSR. */
-#define ENTSR_PTX 0x01 /* Packet transmitted without error */
-#define ENTSR_ND  0x02 /* The transmit wasn't deferred. */
-#define ENTSR_COL 0x04 /* The transmit collided at least once. */
-#define ENTSR_ABT 0x08  /* The transmit collided 16 times, and was deferred. */
-#define ENTSR_CRS 0x10 /* The carrier sense was lost. */
-#define ENTSR_FU  0x20  /* A "FIFO underrun" occurred during transmit. */
-#define ENTSR_CDH 0x40 /* The collision detect "heartbeat" signal was lost. */
-#define ENTSR_OWC 0x80  /* There was an out-of-window collision. */
-
-#define NE2000_MEM_SIZE 32768
-
-typedef struct NE2000State {
-    uint8_t cmd;
-    uint32_t start;
-    uint32_t stop;
-    uint8_t boundary;
-    uint8_t tsr;
-    uint8_t tpsr;
-    uint16_t tcnt;
-    uint16_t rcnt;
-    uint32_t rsar;
-    uint8_t isr;
-    uint8_t dcfg;
-    uint8_t imr;
-    uint8_t phys[6]; /* mac address */
-    uint8_t curpag;
-    uint8_t mult[8]; /* multicast mask array */
-    uint8_t mem[NE2000_MEM_SIZE];
-} NE2000State;
-
-NE2000State ne2000_state;
-int net_fd = -1;
-char network_script[1024];
-
-void ne2000_reset(void)
-{
-    NE2000State *s = &ne2000_state;
-    int i;
+#else
 
-    s->isr = ENISR_RESET;
-    s->mem[0] = 0x52;
-    s->mem[1] = 0x54;
-    s->mem[2] = 0x00;
-    s->mem[3] = 0x12;
-    s->mem[4] = 0x34;
-    s->mem[5] = 0x56;
-    s->mem[14] = 0x57;
-    s->mem[15] = 0x57;
+static int unix_write(int fd, const uint8_t *buf, int len1)
+{
+    int ret, len;
 
-    /* duplicate prom data */
-    for(i = 15;i >= 0; i--) {
-        s->mem[2 * i] = s->mem[i];
-        s->mem[2 * i + 1] = s->mem[i];
+    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;
 }
 
-void ne2000_update_irq(NE2000State *s)
+static inline int send_all(int fd, const uint8_t *buf, int len1)
 {
-    int isr;
-    isr = s->isr & s->imr;
-    if (isr)
-        pic_set_irq(NE2000_IRQ, 1);
-    else
-        pic_set_irq(NE2000_IRQ, 0);
+    return unix_write(fd, buf, len1);
 }
 
-int net_init(void)
+void socket_set_nonblock(int fd)
 {
-    struct ifreq ifr;
-    int fd, ret, pid, status;
-    
-    fd = open("/dev/net/tun", O_RDWR);
-    if (fd < 0) {
-        fprintf(stderr, "warning: could not open /dev/net/tun: no virtual network emulation\n");
-        return -1;
-    }
-    memset(&ifr, 0, sizeof(ifr));
-    ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
-    pstrcpy(ifr.ifr_name, IFNAMSIZ, "tun%d");
-    ret = ioctl(fd, TUNSETIFF, (void *) &ifr);
-    if (ret != 0) {
-        fprintf(stderr, "warning: could not configure /dev/net/tun: no virtual network emulation\n");
-        close(fd);
-        return -1;
-    }
-    printf("Connected to host network interface: %s\n", ifr.ifr_name);
     fcntl(fd, F_SETFL, O_NONBLOCK);
-    net_fd = fd;
+}
+#endif /* !_WIN32 */
 
-    /* try to launch network init script */
-    pid = fork();
-    if (pid >= 0) {
-        if (pid == 0) {
-            execl(network_script, network_script, ifr.ifr_name, NULL);
-            exit(1);
-        }
-        while (waitpid(pid, &status, 0) != pid);
-        if (!WIFEXITED(status) ||
-            WEXITSTATUS(status) != 0) {
-            fprintf(stderr, "%s: could not launch network script for '%s'\n",
-                    network_script, ifr.ifr_name);
-        }
-    }
-    return 0;
+#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);
 }
 
-void net_send_packet(NE2000State *s, const uint8_t *buf, int size)
+static int fd_chr_read_poll(void *opaque)
 {
-#ifdef DEBUG_NE2000
-    printf("NE2000: sending packet size=%d\n", size);
-#endif
-    write(net_fd, buf, size);
+    CharDriverState *chr = opaque;
+    FDCharDriver *s = chr->opaque;
+
+    s->max_size = s->fd_can_read(s->fd_opaque);
+    return s->max_size;
 }
 
-/* return true if the NE2000 can receive more data */
-int ne2000_can_receive(NE2000State *s)
+static void fd_chr_read(void *opaque)
 {
-    int avail, index, boundary;
+    CharDriverState *chr = opaque;
+    FDCharDriver *s = chr->opaque;
+    int size, len;
+    uint8_t buf[1024];
     
-    if (s->cmd & E8390_STOP)
-        return 0;
-    index = s->curpag << 8;
-    boundary = s->boundary << 8;
-    if (index < boundary)
-        avail = boundary - index;
-    else
-        avail = (s->stop - s->start) - (index - boundary);
-    if (avail < (MAX_ETH_FRAME_SIZE + 4))
-        return 0;
-    return 1;
+    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);
+    }
 }
 
-void ne2000_receive(NE2000State *s, uint8_t *buf, int size)
+static void fd_chr_add_read_handler(CharDriverState *chr, 
+                                    IOCanRWHandler *fd_can_read, 
+                                    IOReadHandler *fd_read, void *opaque)
 {
-    uint8_t *p;
-    int total_len, next, avail, len, index;
+    FDCharDriver *s = chr->opaque;
 
-#if defined(DEBUG_NE2000)
-    printf("NE2000: received len=%d\n", size);
-#endif
+    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;
+}
 
-    index = s->curpag << 8;
-    /* 4 bytes for header */
-    total_len = size + 4;
-    /* address for next packet (4 bytes for CRC) */
-    next = index + ((total_len + 4 + 255) & ~0xff);
-    if (next >= s->stop)
-        next -= (s->stop - s->start);
-    /* prepare packet header */
-    p = s->mem + index;
-    p[0] = ENRSR_RXOK; /* receive status */
-    p[1] = next >> 8;
-    p[2] = total_len;
-    p[3] = total_len >> 8;
-    index += 4;
+CharDriverState *qemu_chr_open_file_out(const char *file_out)
+{
+    int fd_out;
 
-    /* write packet data */
-    while (size > 0) {
-        avail = s->stop - index;
-        len = size;
-        if (len > avail)
-            len = avail;
-        memcpy(s->mem + index, buf, len);
-        buf += len;
-        index += len;
-        if (index == s->stop)
-            index = s->start;
-        size -= len;
-    }
-    s->curpag = next >> 8;
-    
-    /* now we can signal we have receive something */
-    s->isr |= ENISR_RX;
-    ne2000_update_irq(s);
+    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);
 }
 
-void ne2000_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
+CharDriverState *qemu_chr_open_pipe(const char *filename)
 {
-    NE2000State *s = &ne2000_state;
-    int offset, page;
+    int fd;
 
-    addr &= 0xf;
-#ifdef DEBUG_NE2000
-    printf("NE2000: write addr=0x%x val=0x%02x\n", addr, val);
-#endif
-    if (addr == E8390_CMD) {
-        /* control register */
-        s->cmd = val;
-        if (val & E8390_START) {
-            /* test specific case: zero length transfert */
-            if ((val & (E8390_RREAD | E8390_RWRITE)) &&
-                s->rcnt == 0) {
-                s->isr |= ENISR_RDC;
-                ne2000_update_irq(s);
-            }
-            if (val & E8390_TRANS) {
-                net_send_packet(s, s->mem + (s->tpsr << 8), s->tcnt);
-                /* signal end of transfert */
-                s->tsr = ENTSR_PTX;
-                s->isr |= ENISR_TX;
-                ne2000_update_irq(s);
-            }
-        }
-    } else {
-        page = s->cmd >> 6;
-        offset = addr | (page << 4);
-        switch(offset) {
-        case EN0_STARTPG:
-            s->start = val << 8;
-            break;
-        case EN0_STOPPG:
-            s->stop = val << 8;
-            break;
-        case EN0_BOUNDARY:
-            s->boundary = val;
-            break;
-        case EN0_IMR:
-            s->imr = val;
-            ne2000_update_irq(s);
-            break;
-        case EN0_TPSR:
-            s->tpsr = val;
-            break;
-        case EN0_TCNTLO:
-            s->tcnt = (s->tcnt & 0xff00) | val;
-            break;
-        case EN0_TCNTHI:
-            s->tcnt = (s->tcnt & 0x00ff) | (val << 8);
-            break;
-        case EN0_RSARLO:
-            s->rsar = (s->rsar & 0xff00) | val;
-            break;
-        case EN0_RSARHI:
-            s->rsar = (s->rsar & 0x00ff) | (val << 8);
-            break;
-        case EN0_RCNTLO:
-            s->rcnt = (s->rcnt & 0xff00) | val;
-            break;
-        case EN0_RCNTHI:
-            s->rcnt = (s->rcnt & 0x00ff) | (val << 8);
-            break;
-        case EN0_DCFG:
-            s->dcfg = val;
-            break;
-        case EN0_ISR:
-            s->isr &= ~val;
-            ne2000_update_irq(s);
-            break;
-        case EN1_PHYS ... EN1_PHYS + 5:
-            s->phys[offset - EN1_PHYS] = val;
-            break;
-        case EN1_CURPAG:
-            s->curpag = val;
-            break;
-        case EN1_MULT ... EN1_MULT + 7:
-            s->mult[offset - EN1_MULT] = val;
-            break;
-        }
-    }
+    fd = open(filename, O_RDWR | O_BINARY);
+    if (fd < 0)
+        return NULL;
+    return qemu_chr_open_fd(fd, fd);
 }
 
-uint32_t ne2000_ioport_read(CPUState *env, uint32_t addr)
+
+/* 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];
+int term_fifo_size;
+
+void term_print_help(void)
 {
-    NE2000State *s = &ne2000_state;
-    int offset, page, ret;
+    printf("\n"
+           "C-a h    print this help\n"
+           "C-a x    exit emulator\n"
+           "C-a s    save disk data back to file (if -snapshot)\n"
+           "C-a b    send break (magic sysrq)\n"
+           "C-a c    switch between console and monitor\n"
+           "C-a C-a  send C-a\n"
+           );
+}
 
-    addr &= 0xf;
-    if (addr == E8390_CMD) {
-        ret = s->cmd;
-    } else {
-        page = s->cmd >> 6;
-        offset = addr | (page << 4);
-        switch(offset) {
-        case EN0_TSR:
-            ret = s->tsr;
-            break;
-        case EN0_BOUNDARY:
-            ret = s->boundary;
-            break;
-        case EN0_ISR:
-            ret = s->isr;
+/* 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 EN1_PHYS ... EN1_PHYS + 5:
-            ret = s->phys[offset - EN1_PHYS];
+        case 'x':
+            exit(0);
             break;
-        case EN1_CURPAG:
-            ret = s->curpag;
+        case 's': 
+            {
+                int i;
+                for (i = 0; i < MAX_DISKS; i++) {
+                    if (bs_table[i])
+                        bdrv_commit(bs_table[i]);
+                }
+            }
             break;
-        case EN1_MULT ... EN1_MULT + 7:
-            ret = s->mult[offset - EN1_MULT];
+        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;
-        default:
-            ret = 0x00;
+        case 'c':
+            client_index++;
+            if (client_index >= stdio_nb_clients)
+                client_index = 0;
+            if (client_index == 0) {
+                /* send a new line in the monitor to get the prompt */
+                ch = '\r';
+                goto send_char;
+            }
             break;
+        case TERM_ESCAPE:
+            goto send_char;
+        }
+    } else if (ch == TERM_ESCAPE) {
+        term_got_escape = 1;
+    } else {
+    send_char:
+        if (client_index < stdio_nb_clients) {
+            uint8_t buf[1];
+            CharDriverState *chr;
+            FDCharDriver *s;
+            
+            chr = stdio_clients[client_index];
+            s = chr->opaque;
+            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;
+            }
         }
     }
-#ifdef DEBUG_NE2000
-    printf("NE2000: read addr=0x%x val=%02x\n", addr, ret);
-#endif
-    return ret;
 }
 
-void ne2000_asic_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
+static int stdio_read_poll(void *opaque)
 {
-    NE2000State *s = &ne2000_state;
-    uint8_t *p;
-
-#ifdef DEBUG_NE2000
-    printf("NE2000: asic write val=0x%04x\n", val);
-#endif
-    p = s->mem + s->rsar;
-    if (s->dcfg & 0x01) {
-        /* 16 bit access */
-        p[0] = val;
-        p[1] = val >> 8;
-        s->rsar += 2;
-        s->rcnt -= 2;
+    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 {
-        /* 8 bit access */
-        p[0] = val;
-        s->rsar++;
-        s->rcnt--;
-    }
-    /* wrap */
-    if (s->rsar == s->stop)
-        s->rsar = s->start;
-    if (s->rcnt == 0) {
-        /* signal end of transfert */
-        s->isr |= ENISR_RDC;
-        ne2000_update_irq(s);
+        return 1;
     }
 }
 
-uint32_t ne2000_asic_ioport_read(CPUState *env, uint32_t addr)
+static void stdio_read(void *opaque)
 {
-    NE2000State *s = &ne2000_state;
-    uint8_t *p;
-    int ret;
-
-    p = s->mem + s->rsar;
-    if (s->dcfg & 0x01) {
-        /* 16 bit access */
-        ret = p[0] | (p[1] << 8);
-        s->rsar += 2;
-        s->rcnt -= 2;
-    } else {
-        /* 8 bit access */
-        ret = p[0];
-        s->rsar++;
-        s->rcnt--;
-    }
-    /* wrap */
-    if (s->rsar == s->stop)
-        s->rsar = s->start;
-    if (s->rcnt == 0) {
-        /* signal end of transfert */
-        s->isr |= ENISR_RDC;
-        ne2000_update_irq(s);
-    }
-#ifdef DEBUG_NE2000
-    printf("NE2000: asic read val=0x%04x\n", ret);
-#endif
-    return ret;
+    int size;
+    uint8_t buf[1];
+    
+    size = read(0, buf, 1);
+    if (size > 0)
+        stdio_received_byte(buf[0]);
 }
 
-void ne2000_reset_ioport_write(CPUState *env, uint32_t addr, uint32_t val)
-{
-    /* nothing to do (end of reset pulse) */
-}
+/* init terminal so that we can grab keys */
+static struct termios oldtty;
+static int old_fd0_flags;
 
-uint32_t ne2000_reset_ioport_read(CPUState *env, uint32_t addr)
+static void term_exit(void)
 {
-    ne2000_reset();
-    return 0;
+    tcsetattr (0, TCSANOW, &oldtty);
+    fcntl(0, F_SETFL, old_fd0_flags);
 }
 
-void ne2000_init(void)
+static void term_init(void)
 {
-    register_ioport_write(NE2000_IOPORT, 16, ne2000_ioport_write, 1);
-    register_ioport_read(NE2000_IOPORT, 16, ne2000_ioport_read, 1);
-
-    register_ioport_write(NE2000_IOPORT + 0x10, 1, ne2000_asic_ioport_write, 1);
-    register_ioport_read(NE2000_IOPORT + 0x10, 1, ne2000_asic_ioport_read, 1);
-    register_ioport_write(NE2000_IOPORT + 0x10, 2, ne2000_asic_ioport_write, 2);
-    register_ioport_read(NE2000_IOPORT + 0x10, 2, ne2000_asic_ioport_read, 2);
+    struct termios tty;
 
-    register_ioport_write(NE2000_IOPORT + 0x1f, 1, ne2000_reset_ioport_write, 1);
-    register_ioport_read(NE2000_IOPORT + 0x1f, 1, ne2000_reset_ioport_read, 1);
-    ne2000_reset();
-}
-#endif
+    tcgetattr (0, &tty);
+    oldtty = tty;
+    old_fd0_flags = fcntl(0, F_GETFL);
 
-/***********************************************************/
-/* PC floppy disk controler emulation glue */
-#define PC_FDC_DMA  0x2
-#define PC_FDC_IRQ  0x6
-#define PC_FDC_BASE 0x3F0
+    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);
 
-static void fdctrl_register (unsigned char **disknames, int ro,
-                             char boot_device)
-{
-    int i;
+    atexit(term_exit);
 
-    fdctrl_init(PC_FDC_IRQ, PC_FDC_DMA, 0, PC_FDC_BASE, boot_device);
-    for (i = 0; i < MAX_FD; i++) {
-        if (disknames[i] != NULL)
-            fdctrl_disk_change(i, disknames[i], ro);
-    }
+    fcntl(0, F_SETFL, O_NONBLOCK);
 }
 
-/***********************************************************/
-/* keyboard emulation */
-
-/*     Keyboard Controller Commands */
-#define KBD_CCMD_READ_MODE     0x20    /* Read mode bits */
-#define KBD_CCMD_WRITE_MODE    0x60    /* Write mode bits */
-#define KBD_CCMD_GET_VERSION   0xA1    /* Get controller version */
-#define KBD_CCMD_MOUSE_DISABLE 0xA7    /* Disable mouse interface */
-#define KBD_CCMD_MOUSE_ENABLE  0xA8    /* Enable mouse interface */
-#define KBD_CCMD_TEST_MOUSE    0xA9    /* Mouse interface test */
-#define KBD_CCMD_SELF_TEST     0xAA    /* Controller self test */
-#define KBD_CCMD_KBD_TEST      0xAB    /* Keyboard interface test */
-#define KBD_CCMD_KBD_DISABLE   0xAD    /* Keyboard interface disable */
-#define KBD_CCMD_KBD_ENABLE    0xAE    /* Keyboard interface enable */
-#define KBD_CCMD_READ_INPORT    0xC0    /* read input port */
-#define KBD_CCMD_READ_OUTPORT  0xD0    /* read output port */
-#define KBD_CCMD_WRITE_OUTPORT 0xD1    /* write output port */
-#define KBD_CCMD_WRITE_OBUF    0xD2
-#define KBD_CCMD_WRITE_AUX_OBUF        0xD3    /* Write to output buffer as if
-                                          initiated by the auxiliary device */
-#define KBD_CCMD_WRITE_MOUSE   0xD4    /* Write the following byte to the mouse */
-#define KBD_CCMD_DISABLE_A20    0xDD    /* HP vectra only ? */
-#define KBD_CCMD_ENABLE_A20     0xDF    /* HP vectra only ? */
-#define KBD_CCMD_RESET         0xFE
-
-/* Keyboard Commands */
-#define KBD_CMD_SET_LEDS       0xED    /* Set keyboard leds */
-#define KBD_CMD_ECHO           0xEE
-#define KBD_CMD_GET_ID                 0xF2    /* get keyboard ID */
-#define KBD_CMD_SET_RATE       0xF3    /* Set typematic rate */
-#define KBD_CMD_ENABLE         0xF4    /* Enable scanning */
-#define KBD_CMD_RESET_DISABLE  0xF5    /* reset and disable scanning */
-#define KBD_CMD_RESET_ENABLE           0xF6    /* reset and enable scanning */
-#define KBD_CMD_RESET          0xFF    /* Reset */
-
-/* Keyboard Replies */
-#define KBD_REPLY_POR          0xAA    /* Power on reset */
-#define KBD_REPLY_ACK          0xFA    /* Command ACK */
-#define KBD_REPLY_RESEND       0xFE    /* Command NACK, send the cmd again */
-
-/* Status Register Bits */
-#define KBD_STAT_OBF           0x01    /* Keyboard output buffer full */
-#define KBD_STAT_IBF           0x02    /* Keyboard input buffer full */
-#define KBD_STAT_SELFTEST      0x04    /* Self test successful */
-#define KBD_STAT_CMD           0x08    /* Last write was a command write (0=data) */
-#define KBD_STAT_UNLOCKED      0x10    /* Zero if keyboard locked */
-#define KBD_STAT_MOUSE_OBF     0x20    /* Mouse output buffer full */
-#define KBD_STAT_GTO           0x40    /* General receive/xmit timeout */
-#define KBD_STAT_PERR          0x80    /* Parity error */
-
-/* Controller Mode Register Bits */
-#define KBD_MODE_KBD_INT       0x01    /* Keyboard data generate IRQ1 */
-#define KBD_MODE_MOUSE_INT     0x02    /* Mouse data generate IRQ12 */
-#define KBD_MODE_SYS           0x04    /* The system flag (?) */
-#define KBD_MODE_NO_KEYLOCK    0x08    /* The keylock doesn't affect the keyboard if set */
-#define KBD_MODE_DISABLE_KBD   0x10    /* Disable keyboard interface */
-#define KBD_MODE_DISABLE_MOUSE 0x20    /* Disable mouse interface */
-#define KBD_MODE_KCC           0x40    /* Scan code conversion to PC format */
-#define KBD_MODE_RFU           0x80
-
-/* Mouse Commands */
-#define AUX_SET_SCALE11                0xE6    /* Set 1:1 scaling */
-#define AUX_SET_SCALE21                0xE7    /* Set 2:1 scaling */
-#define AUX_SET_RES            0xE8    /* Set resolution */
-#define AUX_GET_SCALE          0xE9    /* Get scaling factor */
-#define AUX_SET_STREAM         0xEA    /* Set stream mode */
-#define AUX_POLL               0xEB    /* Poll */
-#define AUX_RESET_WRAP         0xEC    /* Reset wrap mode */
-#define AUX_SET_WRAP           0xEE    /* Set wrap mode */
-#define AUX_SET_REMOTE         0xF0    /* Set remote mode */
-#define AUX_GET_TYPE           0xF2    /* Get type */
-#define AUX_SET_SAMPLE         0xF3    /* Set sample rate */
-#define AUX_ENABLE_DEV         0xF4    /* Enable aux device */
-#define AUX_DISABLE_DEV                0xF5    /* Disable aux device */
-#define AUX_SET_DEFAULT                0xF6
-#define AUX_RESET              0xFF    /* Reset aux device */
-#define AUX_ACK                        0xFA    /* Command byte ACK. */
-
-#define MOUSE_STATUS_REMOTE     0x40
-#define MOUSE_STATUS_ENABLED    0x20
-#define MOUSE_STATUS_SCALE21    0x10
-
-#define KBD_QUEUE_SIZE 256
+CharDriverState *qemu_chr_open_stdio(void)
+{
+    CharDriverState *chr;
 
-typedef struct {
-    uint8_t data[KBD_QUEUE_SIZE];
-    int rptr, wptr, count;
-} KBDQueue;
-
-typedef struct KBDState {
-    KBDQueue queues[2];
-    uint8_t write_cmd; /* if non zero, write data to port 60 is expected */
-    uint8_t status;
-    uint8_t mode;
-    /* keyboard state */
-    int kbd_write_cmd;
-    int scan_enabled;
-    /* mouse state */
-    int mouse_write_cmd;
-    uint8_t mouse_status;
-    uint8_t mouse_resolution;
-    uint8_t mouse_sample_rate;
-    uint8_t mouse_wrap;
-    uint8_t mouse_type; /* 0 = PS2, 3 = IMPS/2, 4 = IMEX */
-    uint8_t mouse_detect_state;
-    int mouse_dx; /* current values, needed for 'poll' mode */
-    int mouse_dy;
-    int mouse_dz;
-    uint8_t mouse_buttons;
-} KBDState;
-
-KBDState kbd_state;
-int reset_requested;
-
-/* update irq and KBD_STAT_[MOUSE_]OBF */
-/* XXX: not generating the irqs if KBD_MODE_DISABLE_KBD is set may be
-   incorrect, but it avoids having to simulate exact delays */
-static void kbd_update_irq(KBDState *s)
-{
-    int irq12_level, irq1_level;
-
-    irq1_level = 0;    
-    irq12_level = 0;    
-    s->status &= ~(KBD_STAT_OBF | KBD_STAT_MOUSE_OBF);
-    if (s->queues[0].count != 0 ||
-        s->queues[1].count != 0) {
-        s->status |= KBD_STAT_OBF;
-        if (s->queues[1].count != 0) {
-            s->status |= KBD_STAT_MOUSE_OBF;
-            if (s->mode & KBD_MODE_MOUSE_INT)
-                irq12_level = 1;
-        } else {
-            if ((s->mode & KBD_MODE_KBD_INT) && 
-                !(s->mode & KBD_MODE_DISABLE_KBD))
-                irq1_level = 1;
-        }
+    if (nographic) {
+        if (stdio_nb_clients >= STDIO_MAX_CLIENTS)
+            return NULL;
+        chr = qemu_chr_open_fd(0, 1);
+        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);
     }
-    pic_set_irq(1, irq1_level);
-    pic_set_irq(12, irq12_level);
+    stdio_clients[stdio_nb_clients++] = chr;
+    if (stdio_nb_clients == 1) {
+        /* set the terminal in raw mode */
+        term_init();
+    }
+    return chr;
 }
 
-static void kbd_queue(KBDState *s, int b, int aux)
+#if defined(__linux__)
+CharDriverState *qemu_chr_open_pty(void)
 {
-    KBDQueue *q = &kbd_state.queues[aux];
+    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);
 
-#if defined(DEBUG_MOUSE) || defined(DEBUG_KBD)
-    if (aux)
-        printf("mouse event: 0x%02x\n", b);
-#ifdef DEBUG_KBD
-    else
-        printf("kbd event: 0x%02x\n", b);
-#endif
-#endif
-    if (q->count >= KBD_QUEUE_SIZE)
-        return;
-    q->data[q->wptr] = b;
-    if (++q->wptr == KBD_QUEUE_SIZE)
-        q->wptr = 0;
-    q->count++;
-    kbd_update_irq(s);
+    fprintf(stderr, "char device redirected to %s\n", slave_name);
+    return qemu_chr_open_fd(master_fd, master_fd);
 }
 
-void kbd_put_keycode(int keycode)
+static void tty_serial_init(int fd, int speed, 
+                            int parity, int data_bits, int stop_bits)
 {
-    KBDState *s = &kbd_state;
-    kbd_queue(s, keycode, 0);
-}
+    struct termios tty;
+    speed_t spd;
 
-uint32_t kbd_read_status(CPUState *env, uint32_t addr)
-{
-    KBDState *s = &kbd_state;
-    int val;
-    val = s->status;
-#if defined(DEBUG_KBD)
-    printf("kbd: read status=0x%02x\n", val);
+#if 0
+    printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n", 
+           speed, parity, data_bits, stop_bits);
 #endif
-    return val;
-}
+    tcgetattr (fd, &tty);
 
-void kbd_write_command(CPUState *env, uint32_t addr, uint32_t val)
-{
-    KBDState *s = &kbd_state;
-
-#ifdef DEBUG_KBD
-    printf("kbd: write cmd=0x%02x\n", val);
-#endif
-    switch(val) {
-    case KBD_CCMD_READ_MODE:
-        kbd_queue(s, s->mode, 0);
-        break;
-    case KBD_CCMD_WRITE_MODE:
-    case KBD_CCMD_WRITE_OBUF:
-    case KBD_CCMD_WRITE_AUX_OBUF:
-    case KBD_CCMD_WRITE_MOUSE:
-    case KBD_CCMD_WRITE_OUTPORT:
-        s->write_cmd = val;
+    switch(speed) {
+    case 50:
+        spd = B50;
         break;
-    case KBD_CCMD_MOUSE_DISABLE:
-        s->mode |= KBD_MODE_DISABLE_MOUSE;
+    case 75:
+        spd = B75;
         break;
-    case KBD_CCMD_MOUSE_ENABLE:
-        s->mode &= ~KBD_MODE_DISABLE_MOUSE;
+    case 300:
+        spd = B300;
         break;
-    case KBD_CCMD_TEST_MOUSE:
-        kbd_queue(s, 0x00, 0);
+    case 600:
+        spd = B600;
         break;
-    case KBD_CCMD_SELF_TEST:
-        s->status |= KBD_STAT_SELFTEST;
-        kbd_queue(s, 0x55, 0);
+    case 1200:
+        spd = B1200;
         break;
-    case KBD_CCMD_KBD_TEST:
-        kbd_queue(s, 0x00, 0);
+    case 2400:
+        spd = B2400;
         break;
-    case KBD_CCMD_KBD_DISABLE:
-        s->mode |= KBD_MODE_DISABLE_KBD;
-        kbd_update_irq(s);
+    case 4800:
+        spd = B4800;
         break;
-    case KBD_CCMD_KBD_ENABLE:
-        s->mode &= ~KBD_MODE_DISABLE_KBD;
-        kbd_update_irq(s);
+    case 9600:
+        spd = B9600;
         break;
-    case KBD_CCMD_READ_INPORT:
-        kbd_queue(s, 0x00, 0);
+    case 19200:
+        spd = B19200;
         break;
-    case KBD_CCMD_READ_OUTPORT:
-        /* XXX: check that */
-#ifdef TARGET_I386
-        val = 0x01 | (a20_enabled << 1);
-#else
-        val = 0x01;
-#endif
-        if (s->status & KBD_STAT_OBF)
-            val |= 0x10;
-        if (s->status & KBD_STAT_MOUSE_OBF)
-            val |= 0x20;
-        kbd_queue(s, val, 0);
-        break;
-#ifdef TARGET_I386
-    case KBD_CCMD_ENABLE_A20:
-        cpu_x86_set_a20(env, 1);
-        break;
-    case KBD_CCMD_DISABLE_A20:
-        cpu_x86_set_a20(env, 0);
-        break;
-#endif
-    case KBD_CCMD_RESET:
-        reset_requested = 1;
-        cpu_interrupt(global_env, CPU_INTERRUPT_EXIT);
+    case 38400:
+        spd = B38400;
         break;
-    case 0xff:
-        /* ignore that - I don't know what is its use */
+    case 57600:
+        spd = B57600;
         break;
     default:
-        fprintf(stderr, "qemu: unsupported keyboard cmd=0x%02x\n", val);
+    case 115200:
+        spd = B115200;
         break;
     }
-}
-
-uint32_t kbd_read_data(CPUState *env, uint32_t addr)
-{
-    KBDState *s = &kbd_state;
-    KBDQueue *q;
-    int val, index;
-    
-    q = &s->queues[0]; /* first check KBD data */
-    if (q->count == 0)
-        q = &s->queues[1]; /* then check AUX data */
-    if (q->count == 0) {
-        /* NOTE: if no data left, we return the last keyboard one
-           (needed for EMM386) */
-        /* XXX: need a timer to do things correctly */
-        q = &s->queues[0];
-        index = q->rptr - 1;
-        if (index < 0)
-            index = KBD_QUEUE_SIZE - 1;
-        val = q->data[index];
-    } else {
-        val = q->data[q->rptr];
-        if (++q->rptr == KBD_QUEUE_SIZE)
-            q->rptr = 0;
-        q->count--;
-        /* reading deasserts IRQ */
-        if (q == &s->queues[0])
-            pic_set_irq(1, 0);
-        else
-            pic_set_irq(12, 0);
-    }
-    /* reassert IRQs if data left */
-    kbd_update_irq(s);
-#ifdef DEBUG_KBD
-    printf("kbd: read data=0x%02x\n", val);
-#endif
-    return val;
-}
 
-static void kbd_reset_keyboard(KBDState *s)
-{
-    s->scan_enabled = 1;
-}
+    cfsetispeed(&tty, spd);
+    cfsetospeed(&tty, spd);
 
-static void kbd_write_keyboard(KBDState *s, int val)
-{
-    switch(s->kbd_write_cmd) {
+    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 -1:
-        switch(val) {
-        case 0x00:
-            kbd_queue(s, KBD_REPLY_ACK, 0);
-            break;
-        case 0x05:
-            kbd_queue(s, KBD_REPLY_RESEND, 0);
-            break;
-        case KBD_CMD_GET_ID:
-            kbd_queue(s, KBD_REPLY_ACK, 0);
-            kbd_queue(s, 0xab, 0);
-            kbd_queue(s, 0x83, 0);
-            break;
-        case KBD_CMD_ECHO:
-            kbd_queue(s, KBD_CMD_ECHO, 0);
-            break;
-        case KBD_CMD_ENABLE:
-            s->scan_enabled = 1;
-            kbd_queue(s, KBD_REPLY_ACK, 0);
-            break;
-        case KBD_CMD_SET_LEDS:
-        case KBD_CMD_SET_RATE:
-            s->kbd_write_cmd = val;
-            kbd_queue(s, KBD_REPLY_ACK, 0);
-            break;
-        case KBD_CMD_RESET_DISABLE:
-            kbd_reset_keyboard(s);
-            s->scan_enabled = 0;
-            kbd_queue(s, KBD_REPLY_ACK, 0);
-            break;
-        case KBD_CMD_RESET_ENABLE:
-            kbd_reset_keyboard(s);
-            s->scan_enabled = 1;
-            kbd_queue(s, KBD_REPLY_ACK, 0);
-            break;
-        case KBD_CMD_RESET:
-            kbd_reset_keyboard(s);
-            kbd_queue(s, KBD_REPLY_ACK, 0);
-            kbd_queue(s, KBD_REPLY_POR, 0);
-            break;
-        default:
-            kbd_queue(s, KBD_REPLY_ACK, 0);
-            break;
-        }
+    case 8:
+        tty.c_cflag |= CS8;
         break;
-    case KBD_CMD_SET_LEDS:
-        kbd_queue(s, KBD_REPLY_ACK, 0);
-        s->kbd_write_cmd = -1;
+    case 7:
+        tty.c_cflag |= CS7;
+        break;
+    case 6:
+        tty.c_cflag |= CS6;
         break;
-    case KBD_CMD_SET_RATE:
-        kbd_queue(s, KBD_REPLY_ACK, 0);
-        s->kbd_write_cmd = -1;
+    case 5:
+        tty.c_cflag |= CS5;
         break;
     }
-}
-
-static void kbd_mouse_send_packet(KBDState *s)
-{
-    unsigned int b;
-    int dx1, dy1, dz1;
-
-    dx1 = s->mouse_dx;
-    dy1 = s->mouse_dy;
-    dz1 = s->mouse_dz;
-    /* XXX: increase range to 8 bits ? */
-    if (dx1 > 127)
-        dx1 = 127;
-    else if (dx1 < -127)
-        dx1 = -127;
-    if (dy1 > 127)
-        dy1 = 127;
-    else if (dy1 < -127)
-        dy1 = -127;
-    b = 0x08 | ((dx1 < 0) << 4) | ((dy1 < 0) << 5) | (s->mouse_buttons & 0x07);
-    kbd_queue(s, b, 1);
-    kbd_queue(s, dx1 & 0xff, 1);
-    kbd_queue(s, dy1 & 0xff, 1);
-    /* extra byte for IMPS/2 or IMEX */
-    switch(s->mouse_type) {
+    switch(parity) {
     default:
+    case 'N':
         break;
-    case 3:
-        if (dz1 > 127)
-            dz1 = 127;
-        else if (dz1 < -127)
-                dz1 = -127;
-        kbd_queue(s, dz1 & 0xff, 1);
+    case 'E':
+        tty.c_cflag |= PARENB;
         break;
-    case 4:
-        if (dz1 > 7)
-            dz1 = 7;
-        else if (dz1 < -7)
-            dz1 = -7;
-        b = (dz1 & 0x0f) | ((s->mouse_buttons & 0x18) << 1);
-        kbd_queue(s, b, 1);
+    case 'O':
+        tty.c_cflag |= PARENB | PARODD;
         break;
     }
-
-    /* update deltas */
-    s->mouse_dx -= dx1;
-    s->mouse_dy -= dy1;
-    s->mouse_dz -= dz1;
-}
-
-void kbd_mouse_event(int dx, int dy, int dz, int buttons_state)
-{
-    KBDState *s = &kbd_state;
-
-    /* check if deltas are recorded when disabled */
-    if (!(s->mouse_status & MOUSE_STATUS_ENABLED))
-        return;
-
-    s->mouse_dx += dx;
-    s->mouse_dy -= dy;
-    s->mouse_dz += dz;
-    s->mouse_buttons = buttons_state;
     
-    if (!(s->mouse_status & MOUSE_STATUS_REMOTE) &&
-        (s->queues[1].count < (KBD_QUEUE_SIZE - 16))) {
-        for(;;) {
-            /* if not remote, send event. Multiple events are sent if
-               too big deltas */
-            kbd_mouse_send_packet(s);
-            if (s->mouse_dx == 0 && s->mouse_dy == 0 && s->mouse_dz == 0)
-                break;
-        }
-    }
+    tcsetattr (fd, TCSANOW, &tty);
 }
 
-static void kbd_write_mouse(KBDState *s, int val)
+static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
 {
-#ifdef DEBUG_MOUSE
-    printf("kbd: write mouse 0x%02x\n", val);
-#endif
-    switch(s->mouse_write_cmd) {
-    default:
-    case -1:
-        /* mouse command */
-        if (s->mouse_wrap) {
-            if (val == AUX_RESET_WRAP) {
-                s->mouse_wrap = 0;
-                kbd_queue(s, AUX_ACK, 1);
-                return;
-            } else if (val != AUX_RESET) {
-                kbd_queue(s, val, 1);
-                return;
-            }
-        }
-        switch(val) {
-        case AUX_SET_SCALE11:
-            s->mouse_status &= ~MOUSE_STATUS_SCALE21;
-            kbd_queue(s, AUX_ACK, 1);
-            break;
-        case AUX_SET_SCALE21:
-            s->mouse_status |= MOUSE_STATUS_SCALE21;
-            kbd_queue(s, AUX_ACK, 1);
-            break;
-        case AUX_SET_STREAM:
-            s->mouse_status &= ~MOUSE_STATUS_REMOTE;
-            kbd_queue(s, AUX_ACK, 1);
-            break;
-        case AUX_SET_WRAP:
-            s->mouse_wrap = 1;
-            kbd_queue(s, AUX_ACK, 1);
-            break;
-        case AUX_SET_REMOTE:
-            s->mouse_status |= MOUSE_STATUS_REMOTE;
-            kbd_queue(s, AUX_ACK, 1);
-            break;
-        case AUX_GET_TYPE:
-            kbd_queue(s, AUX_ACK, 1);
-            kbd_queue(s, s->mouse_type, 1);
-            break;
-        case AUX_SET_RES:
-        case AUX_SET_SAMPLE:
-            s->mouse_write_cmd = val;
-            kbd_queue(s, AUX_ACK, 1);
-            break;
-        case AUX_GET_SCALE:
-            kbd_queue(s, AUX_ACK, 1);
-            kbd_queue(s, s->mouse_status, 1);
-            kbd_queue(s, s->mouse_resolution, 1);
-            kbd_queue(s, s->mouse_sample_rate, 1);
-            break;
-        case AUX_POLL:
-            kbd_queue(s, AUX_ACK, 1);
-            kbd_mouse_send_packet(s);
-            break;
-        case AUX_ENABLE_DEV:
-            s->mouse_status |= MOUSE_STATUS_ENABLED;
-            kbd_queue(s, AUX_ACK, 1);
-            break;
-        case AUX_DISABLE_DEV:
-            s->mouse_status &= ~MOUSE_STATUS_ENABLED;
-            kbd_queue(s, AUX_ACK, 1);
-            break;
-        case AUX_SET_DEFAULT:
-            s->mouse_sample_rate = 100;
-            s->mouse_resolution = 2;
-            s->mouse_status = 0;
-            kbd_queue(s, AUX_ACK, 1);
-            break;
-        case AUX_RESET:
-            s->mouse_sample_rate = 100;
-            s->mouse_resolution = 2;
-            s->mouse_status = 0;
-            kbd_queue(s, AUX_ACK, 1);
-            kbd_queue(s, 0xaa, 1);
-            kbd_queue(s, s->mouse_type, 1);
-            break;
-        default:
-            break;
+    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 AUX_SET_SAMPLE:
-        s->mouse_sample_rate = val;
-#if 0
-        /* detect IMPS/2 or IMEX */
-        switch(s->mouse_detect_state) {
-        default:
-        case 0:
-            if (val == 200)
-                s->mouse_detect_state = 1;
-            break;
-        case 1:
-            if (val == 100)
-                s->mouse_detect_state = 2;
-            else if (val == 200)
-                s->mouse_detect_state = 3;
-            else
-                s->mouse_detect_state = 0;
-            break;
-        case 2:
-            if (val == 80) 
-                s->mouse_type = 3; /* IMPS/2 */
-            s->mouse_detect_state = 0;
-            break;
-        case 3:
-            if (val == 80) 
-                s->mouse_type = 4; /* IMEX */
-            s->mouse_detect_state = 0;
-            break;
+    case CHR_IOCTL_SERIAL_SET_BREAK:
+        {
+            int enable = *(int *)arg;
+            if (enable)
+                tcsendbreak(s->fd_in, 1);
         }
-#endif
-        kbd_queue(s, AUX_ACK, 1);
-        s->mouse_write_cmd = -1;
-        break;
-    case AUX_SET_RES:
-        s->mouse_resolution = val;
-        kbd_queue(s, AUX_ACK, 1);
-        s->mouse_write_cmd = -1;
         break;
+    default:
+        return -ENOTSUP;
     }
+    return 0;
 }
 
-void kbd_write_data(CPUState *env, uint32_t addr, uint32_t val)
+CharDriverState *qemu_chr_open_tty(const char *filename)
 {
-    KBDState *s = &kbd_state;
+    CharDriverState *chr;
+    int fd;
 
-#ifdef DEBUG_KBD
-    printf("kbd: write data=0x%02x\n", val);
-#endif
+    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;
+}
 
-    switch(s->write_cmd) {
-    case 0:
-        kbd_write_keyboard(s, val);
-        break;
-    case KBD_CCMD_WRITE_MODE:
-        s->mode = val;
-        kbd_update_irq(s);
+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 KBD_CCMD_WRITE_OBUF:
-        kbd_queue(s, val, 0);
+    case CHR_IOCTL_PP_WRITE_DATA:
+        b = *(uint8_t *)arg;
+        if (ioctl(fd, PPWDATA, &b) < 0)
+            return -ENOTSUP;
         break;
-    case KBD_CCMD_WRITE_AUX_OBUF:
-        kbd_queue(s, val, 1);
+    case CHR_IOCTL_PP_READ_CONTROL:
+        if (ioctl(fd, PPRCONTROL, &b) < 0)
+            return -ENOTSUP;
+        *(uint8_t *)arg = b;
         break;
-    case KBD_CCMD_WRITE_OUTPORT:
-#ifdef TARGET_I386
-        cpu_x86_set_a20(env, (val >> 1) & 1);
-#endif
-        if (!(val & 1)) {
-            reset_requested = 1;
-            cpu_interrupt(global_env, CPU_INTERRUPT_EXIT);
-        }
+    case CHR_IOCTL_PP_WRITE_CONTROL:
+        b = *(uint8_t *)arg;
+        if (ioctl(fd, PPWCONTROL, &b) < 0)
+            return -ENOTSUP;
         break;
-    case KBD_CCMD_WRITE_MOUSE:
-        kbd_write_mouse(s, val);
+    case CHR_IOCTL_PP_READ_STATUS:
+        if (ioctl(fd, PPRSTATUS, &b) < 0)
+            return -ENOTSUP;
+        *(uint8_t *)arg = b;
         break;
     default:
-        break;
+        return -ENOTSUP;
     }
-    s->write_cmd = 0;
+    return 0;
 }
 
-void kbd_reset(KBDState *s)
+CharDriverState *qemu_chr_open_pp(const char *filename)
 {
-    KBDQueue *q;
-    int i;
+    CharDriverState *chr;
+    int fd;
 
-    s->kbd_write_cmd = -1;
-    s->mouse_write_cmd = -1;
-    s->mode = KBD_MODE_KBD_INT | KBD_MODE_MOUSE_INT;
-    s->status = KBD_STAT_CMD | KBD_STAT_UNLOCKED;
-    for(i = 0; i < 2; i++) {
-        q = &s->queues[i];
-        q->rptr = 0;
-        q->wptr = 0;
-        q->count = 0;
-    }
-}
-
-void kbd_init(void)
-{
-    kbd_reset(&kbd_state);
-#if defined (TARGET_I386) || defined (TARGET_PPC)
-    register_ioport_read(0x60, 1, kbd_read_data, 1);
-    register_ioport_write(0x60, 1, kbd_write_data, 1);
-    register_ioport_read(0x64, 1, kbd_read_status, 1);
-    register_ioport_write(0x64, 1, kbd_write_command, 1);
-#endif
-}
+    fd = open(filename, O_RDWR);
+    if (fd < 0)
+        return NULL;
 
-/***********************************************************/
-/* Bochs BIOS debug ports */
-#ifdef TARGET_I386
-void bochs_bios_write(CPUX86State *env, uint32_t addr, uint32_t val)
-{
-    switch(addr) {
-        /* Bochs BIOS messages */
-    case 0x400:
-    case 0x401:
-        fprintf(stderr, "BIOS panic at rombios.c, line %d\n", val);
-        exit(1);
-    case 0x402:
-    case 0x403:
-#ifdef DEBUG_BIOS
-        fprintf(stderr, "%c", val);
-#endif
-        break;
+    if (ioctl(fd, PPCLAIM) < 0) {
+        close(fd);
+        return NULL;
+    }
 
-        /* LGPL'ed VGA BIOS messages */
-    case 0x501:
-    case 0x502:
-        fprintf(stderr, "VGA BIOS panic, line %d\n", val);
-        exit(1);
-    case 0x500:
-    case 0x503:
-#ifdef DEBUG_BIOS
-        fprintf(stderr, "%c", val);
-#endif
-        break;
+    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;
 }
 
-void bochs_bios_init(void)
+#else
+CharDriverState *qemu_chr_open_pty(void)
 {
-    register_ioport_write(0x400, 1, bochs_bios_write, 2);
-    register_ioport_write(0x401, 1, bochs_bios_write, 2);
-    register_ioport_write(0x402, 1, bochs_bios_write, 1);
-    register_ioport_write(0x403, 1, bochs_bios_write, 1);
-
-    register_ioport_write(0x501, 1, bochs_bios_write, 2);
-    register_ioport_write(0x502, 1, bochs_bios_write, 2);
-    register_ioport_write(0x500, 1, bochs_bios_write, 1);
-    register_ioport_write(0x503, 1, bochs_bios_write, 1);
+    return NULL;
 }
 #endif
 
-/***********************************************************/
-/* dumb display */
-
-/* init terminal so that we can grab keys */
-static struct termios oldtty;
+#endif /* !defined(_WIN32) */
 
-static void term_exit(void)
+#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)
 {
-    tcsetattr (0, TCSANOW, &oldtty);
+    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 term_init(void)
+static void win_chr_close(CharDriverState *chr)
 {
-    struct termios tty;
+    WinCharState *s = chr->opaque;
+    win_chr_close2(s);
+}
 
-    tcgetattr (0, &tty);
-    oldtty = tty;
+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;
+    }
 
-    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;
+    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;
+    }
     
-    tcsetattr (0, TCSANOW, &tty);
+    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;
+    }
 
-    atexit(term_exit);
+    if (!SetCommMask(s->hcom, EV_ERR)) {
+        fprintf(stderr, "Failed SetCommMask\n");
+        goto fail;
+    }
 
-    fcntl(0, F_SETFL, O_NONBLOCK);
+    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 void dumb_update(DisplayState *ds, int x, int y, int w, int h)
+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 void dumb_resize(DisplayState *ds, int w, int h)
+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 dumb_refresh(DisplayState *ds)
+static void win_chr_read(WinCharState *s)
 {
-    vga_update_display();
+    if (s->len > s->max_size)
+        s->len = s->max_size;
+    if (s->len == 0)
+        return;
+    
+    win_chr_readfile(s);
 }
 
-void dumb_display_init(DisplayState *ds)
+static int win_chr_poll(void *opaque)
 {
-    ds->data = NULL;
-    ds->linesize = 0;
-    ds->depth = 0;
-    ds->dpy_update = dumb_update;
-    ds->dpy_resize = dumb_resize;
-    ds->dpy_refresh = dumb_refresh;
+    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;
 }
 
-#if !defined(CONFIG_SOFTMMU)
-/***********************************************************/
-/* cpu signal handler */
-static void host_segv_handler(int host_signum, siginfo_t *info, 
-                              void *puc)
+static void win_chr_add_read_handler(CharDriverState *chr, 
+                                    IOCanRWHandler *fd_can_read, 
+                                    IOReadHandler *fd_read, void *opaque)
 {
-    if (cpu_signal_handler(host_signum, info, puc))
-        return;
-    term_exit();
-    abort();
+    WinCharState *s = chr->opaque;
+
+    s->fd_can_read = fd_can_read;
+    s->fd_read = fd_read;
+    s->win_opaque = opaque;
 }
-#endif
 
-static int timer_irq_pending;
-static int timer_irq_count;
+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 timer_ms;
-static int gui_refresh_pending, gui_refresh_count;
+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 void host_alarm_handler(int host_signum, siginfo_t *info, 
-                               void *puc)
+static int win_chr_pipe_init(WinCharState *s, const char *filename)
 {
-    /* NOTE: since usually the OS asks a 100 Hz clock, there can be
-       some drift between cpu_get_ticks() and the interrupt time. So
-       we queue some interrupts to avoid missing some */
-    timer_irq_count += pit_get_out_edges(&pit_channels[0]);
-    if (timer_irq_count) {
-        if (timer_irq_count > 2)
-            timer_irq_count = 2;
-        timer_irq_count--;
-        timer_irq_pending = 1;
+    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;
     }
-    gui_refresh_count += timer_ms;
-    if (gui_refresh_count >= GUI_REFRESH_INTERVAL) {
-        gui_refresh_count = 0;
-        gui_refresh_pending = 1;
+    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;
     }
 
-    /* XXX: seems dangerous to run that here. */
-    DMA_run();
-    SB16_run();
+    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 (gui_refresh_pending || timer_irq_pending) {
-        /* just exit from the cpu to have a chance to handle timers */
-        cpu_interrupt(global_env, CPU_INTERRUPT_EXIT);
+    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;
 }
 
-#ifdef CONFIG_SOFTMMU
-void *get_mmap_addr(unsigned long size)
+
+CharDriverState *qemu_chr_open_win_pipe(const char *filename)
 {
-    return NULL;
+    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;
 }
-#else
-unsigned long mmap_addr = PHYS_RAM_BASE;
 
-void *get_mmap_addr(unsigned long size)
+CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
 {
-    unsigned long addr;
-    addr = mmap_addr;
-    mmap_addr += ((size + 4095) & ~4095) + 4096;
-    return (void *)addr;
+    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;
 }
-#endif
-
-/* main execution loop */
-
-CPUState *cpu_gdbstub_get_env(void *opaque)
+    
+CharDriverState *qemu_chr_open_win_file_out(const char *file_out)
 {
-    return global_env;
+    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
 
-int main_loop(void *opaque)
+CharDriverState *qemu_chr_open(const char *filename)
 {
-    struct pollfd ufds[3], *pf, *serial_ufd, *gdb_ufd;
-#if defined (TARGET_I386)
-    struct pollfd *net_ufd;
+    const char *p;
+
+    if (!strcmp(filename, "vc")) {
+        return text_console_init(&display_state);
+    } else if (!strcmp(filename, "null")) {
+        return qemu_chr_open_null();
+    } 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
-    int ret, n, timeout, serial_ok;
-    uint8_t ch;
-    CPUState *env = global_env;
-
-    if (!term_inited) {
-        /* initialize terminal only there so that the user has a
-           chance to stop QEMU with Ctrl-C before the gdb connection
-           is launched */
-        term_inited = 1;
-        term_init();
+#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_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) close(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) {
+        close(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;
+    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;
+
+    *lastp = port->next;
+    usb_attach(port, NULL);
+    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\n", 
+                    0, dev->addr, speed_str);
+    }
+}
+
+/***********************************************************/
+/* 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;
+}
+
+#if !defined(CONFIG_SOFTMMU)
+/***********************************************************/
+/* cpu signal handler */
+static void host_segv_handler(int host_signum, siginfo_t *info, 
+                              void *puc)
+{
+    if (cpu_signal_handler(host_signum, info, puc))
+        return;
+    if (stdio_nb_clients > 0)
+        term_exit();
+    abort();
+}
+#endif
+
+/***********************************************************/
+/* I/O handling */
+
+#define MAX_IO_HANDLERS 64
+
+typedef struct IOHandlerRecord {
+    int fd;
+    IOCanRWHandler *fd_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;
+        }
+    }
+}
+
+/***********************************************************/
+/* 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 {
+            TARGET_FPREG_T f;
+            target_ulong i;
+        } u;
+        u.f = env->fpr[i];
+        qemu_put_betl(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 {
+            TARGET_FPREG_T f;
+            target_ulong i;
+        } u;
+        u.i = qemu_get_betl(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;
+}
 
-    serial_ok = 1;
-    cpu_enable_ticks();
-    for(;;) {
-#if defined (DO_TB_FLUSH)
-        tb_flush();
+/***********************************************************/
+/* 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;
+            HANDLE hEvents[1];
+
+            hEvents[0] = host_alarm;
+            ret = WaitForMultipleObjects(1, hEvents, FALSE, timeout);
+            switch(ret) {
+            case WAIT_OBJECT_0 + 0:
+                break;
+            case WAIT_TIMEOUT:
+                break;
+            default:
+                err = GetLastError();
+                fprintf(stderr, "Wait error %d %d\n", ret, err);
+                break;
+            }
+    }
 #endif
-        ret = cpu_exec(env);
-        if (reset_requested) {
-            ret = EXCP_INTERRUPT; 
-            break;
+    /* 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 (ret == EXCP_DEBUG) {
-            ret = EXCP_DEBUG;
-            break;
+        if (ioh->fd_write) {
+            FD_SET(ioh->fd, &wfds);
+            if (ioh->fd > nfds)
+                nfds = ioh->fd;
         }
-        /* if hlt instruction, we wait until the next IRQ */
-        if (ret == EXCP_HLT) 
-            timeout = 10;
-        else
-            timeout = 0;
-        /* poll any events */
-        serial_ufd = NULL;
-        pf = ufds;
-        if (serial_ok && !(serial_ports[0].lsr & UART_LSR_DR)) {
-            serial_ufd = pf;
-            pf->fd = 0;
-            pf->events = POLLIN;
-            pf++;
-        }
-#if defined (TARGET_I386)
-        net_ufd = NULL;
-        if (net_fd > 0 && ne2000_can_receive(&ne2000_state)) {
-            net_ufd = pf;
-            pf->fd = net_fd;
-            pf->events = POLLIN;
-            pf++;
-        }
-#endif
-        gdb_ufd = NULL;
-        if (gdbstub_fd > 0) {
-            gdb_ufd = pf;
-            pf->fd = gdbstub_fd;
-            pf->events = POLLIN;
-            pf++;
-        }
-
-        ret = poll(ufds, pf - ufds, timeout);
-        if (ret > 0) {
-            if (serial_ufd && (serial_ufd->revents & POLLIN)) {
-                n = read(0, &ch, 1);
-                if (n == 1) {
-                    serial_received_byte(&serial_ports[0], ch);
-                } else {
-                   /* Closed, stop polling. */
-                    serial_ok = 0;
-                }
+    }
+    
+    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 defined (TARGET_I386)
-            if (net_ufd && (net_ufd->revents & POLLIN)) {
-                uint8_t buf[MAX_ETH_FRAME_SIZE];
-
-                n = read(net_fd, buf, MAX_ETH_FRAME_SIZE);
-                if (n > 0) {
-                    if (n < 60) {
-                        memset(buf + n, 0, 60 - n);
-                        n = 60;
-                    }
-                    ne2000_receive(&ne2000_state, buf, n);
+            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"
+           "-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"
+           ,
+#ifdef CONFIG_SOFTMMU
+           "qemu",
+#else
+           "qemu-fast",
+#endif
+           DEFAULT_RAM_SIZE,
+#ifndef _WIN32
+           DEFAULT_NETWORK_SCRIPT,
+#endif
+           DEFAULT_GDBSTUB_PORT,
+           "/tmp/qemu.log");
+#ifndef CONFIG_SOFTMMU
+    printf("\n"
+           "NOTE: this version of QEMU is faster but it needs slightly patched OSes to\n"
+           "work. Please use the 'qemu' executable to have a more accurate (but slower)\n"
+           "PC emulation.\n");
+#endif
+    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,
+    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 },
+    { "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
-            if (gdb_ufd && (gdb_ufd->revents & POLLIN)) {
-                uint8_t buf[1];
-                /* stop emulation if requested by gdb */
-                n = read(gdbstub_fd, buf, 1);
-                if (n == 1) {
-                    ret = EXCP_INTERRUPT; 
+        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;
                 }
             }
-        }
 
-        /* timer IRQ */
-        if (timer_irq_pending) {
-#if defined (TARGET_I386)
-            pic_set_irq(0, 1);
-            pic_set_irq(0, 0);
-            timer_irq_pending = 0;
-            /* XXX: RTC test */
-            if (cmos_data[RTC_REG_B] & 0x50) {
-                pic_set_irq(8, 1);
+            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;
             }
-#endif
+            p += l + (e != NULL);
         }
 
-        /* VGA */
-        if (gui_refresh_pending) {
-            display_state.dpy_refresh(&display_state);
-            gui_refresh_pending = 0;
-        }
+        if (bad_card)
+            goto show_valid_cards;
     }
-    cpu_disable_ticks();
-    return ret;
 }
-
-void help(void)
-{
-    printf("QEMU PC emulator version " QEMU_VERSION ", Copyright (c) 2003 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"
-           "-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 2 image\n"
-           "-boot [c|d]     boot on hard disk (c) or CD-ROM (d)\n"
-          "-snapshot       write to temporary files instead of disk image files\n"
-           "-m megs         set virtual RAM size to megs MB\n"
-           "-n script       set network init script [default=%s]\n"
-           "-tun-fd fd      this fd talks to tap/tun, use it.\n"
-           "-nographic      disable graphical output\n"
-           "\n"
-           "Linux boot specific (does not require PC BIOS):\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"
-           "-s              wait gdb connection to port %d\n"
-           "-p port         change gdb connection port\n"
-           "-d              output log in /tmp/vl.log\n"
-           "-hdachs c,h,s   force hard disk 0 geometry (usually qemu can guess it)\n"
-           "-L path         set the directory for the BIOS and VGA BIOS\n"
-           "\n"
-           "During emulation, use C-a h to get terminal commands:\n",
-#ifdef CONFIG_SOFTMMU
-           "qemu",
-#else
-           "qemu-fast",
-#endif
-           DEFAULT_NETWORK_SCRIPT, 
-           DEFAULT_GDBSTUB_PORT);
-    term_print_help();
-#ifndef CONFIG_SOFTMMU
-    printf("\n"
-           "NOTE: this version of QEMU is faster but it needs slightly patched OSes to\n"
-           "work. Please use the 'qemu' executable to have a more accurate (but slower)\n"
-           "PC emulation.\n");
 #endif
-    exit(1);
-}
-
-struct option long_options[] = {
-    { "initrd", 1, NULL, 0, },
-    { "hda", 1, NULL, 0, },
-    { "hdb", 1, NULL, 0, },
-    { "snapshot", 0, NULL, 0, },
-    { "hdachs", 1, NULL, 0, },
-    { "nographic", 0, NULL, 0, },
-    { "kernel", 1, NULL, 0, },
-    { "append", 1, NULL, 0, },
-    { "tun-fd", 1, NULL, 0, },
-    { "hdc", 1, NULL, 0, },
-    { "hdd", 1, NULL, 0, },
-    { "cdrom", 1, NULL, 0, },
-    { "boot", 1, NULL, 0, },
-    { "fda", 1, NULL, 0, },
-    { "fdb", 1, NULL, 0, },
-    { NULL, 0, NULL, 0 },
-};
 
-#ifdef CONFIG_SDL
-/* SDL use the pthreads and they modify sigaction. We don't
-   want that. */
-#if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2)
-extern void __libc_sigaction();
-#define sigaction(sig, act, oact) __libc_sigaction(sig, act, oact)
-#else
-extern void __sigaction();
-#define sigaction(sig, act, oact) __sigaction(sig, act, oact)
-#endif
-#endif /* CONFIG_SDL */
+#define MAX_NET_CLIENTS 32
 
 int main(int argc, char **argv)
 {
-    int c, ret, initrd_size, i, use_gdbstub, gdbstub_port, long_index;
-    int snapshot, linux_boot, total_ram_size;
-#if defined (TARGET_I386)
-    struct linux_params *params;
+#ifdef CONFIG_GDBSTUB
+    int use_gdbstub, gdbstub_port;
 #endif
-    struct sigaction act;
-    struct itimerval itv;
-    CPUState *env;
+    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);
+#if !defined(CONFIG_SOFTMMU)
     /* we never want that malloc() uses mmap() */
     mallopt(M_MMAP_THRESHOLD, 4096 * 1024);
+#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;
-    phys_ram_size = 32 * 1024 * 1024;
+    ram_size = DEFAULT_RAM_SIZE * 1024 * 1024;
     vga_ram_size = VGA_RAM_SIZE;
-#if defined (TARGET_I386)
-    pstrcpy(network_script, sizeof(network_script), DEFAULT_NETWORK_SCRIPT);
-#endif
+    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(;;) {
-        c = getopt_long_only(argc, argv, "hm:dn:sp:L:", long_options, &long_index);
-        if (c == -1)
+        if (optind >= argc)
             break;
-        switch(c) {
-        case 0:
-            switch(long_index) {
-            case 0:
-                initrd_filename = optarg;
+        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 1:
-                hd_filename[0] = optarg;
+            case QEMU_OPTION_initrd:
+                initrd_filename = optarg;
                 break;
-            case 2:
-                hd_filename[1] = optarg;
+            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 3:
+            case QEMU_OPTION_snapshot:
                 snapshot = 1;
                 break;
-            case 4:
+            case QEMU_OPTION_hdachs:
                 {
-                    int cyls, heads, secs;
                     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 (*p != '\0')
+                    if (secs < 1 || secs > 63)
                         goto chs_fail;
-                    ide_set_geometry(0, cyls, heads, secs);
-                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 5:
+            case QEMU_OPTION_nographic:
+                pstrcpy(monitor_device, sizeof(monitor_device), "stdio");
+                pstrcpy(serial_devices[0], sizeof(serial_devices[0]), "stdio");
                 nographic = 1;
                 break;
-            case 6:
+            case QEMU_OPTION_kernel:
                 kernel_filename = optarg;
                 break;
-            case 7:
+            case QEMU_OPTION_append:
                 kernel_cmdline = optarg;
                 break;
-#if defined (TARGET_I386)
-           case 8:
-               net_fd = atoi(optarg);
-               break;
-#endif
-            case 9:
-                hd_filename[2] = optarg;
-                break;
-            case 10:
-                hd_filename[3] = optarg;
-                break;
-            case 11:
-                hd_filename[2] = optarg;
-                ide_set_cdrom(2, 1);
+            case QEMU_OPTION_cdrom:
+                if (cdrom_index >= 0) {
+                    hd_filename[cdrom_index] = optarg;
+                }
                 break;
-            case 12:
+            case QEMU_OPTION_boot:
                 boot_device = optarg[0];
-                if (boot_device != 'a' && boot_device != 'b' &&
+                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 13:
+            case QEMU_OPTION_fda:
                 fd_filename[0] = optarg;
                 break;
-            case 14:
+            case QEMU_OPTION_fdb:
                 fd_filename[1] = optarg;
                 break;
-            }
-            break;
-        case 'h':
-            help();
-            break;
-        case 'm':
-            phys_ram_size = atoi(optarg) * 1024 * 1024;
-            if (phys_ram_size <= 0)
+            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();
-            if (phys_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 'd':
-            cpu_set_log(CPU_LOG_ALL);
-            break;
-#if defined (TARGET_I386)
-        case 'n':
-            pstrcpy(network_script, sizeof(network_script), optarg);
-            break;
+                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 's':
-            use_gdbstub = 1;
-            break;
-        case 'p':
-            gdbstub_port = atoi(optarg);
-            break;
-        case 'L':
-            bios_dir = optarg;
-            break;
+            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;
+            }
         }
     }
 
-    if (optind < argc) {
-        hd_filename[0] = argv[optind++];
-    }
-
+#ifdef USE_KQEMU
+    if (smp_cpus > 1)
+        kqemu_allowed = 0;
+#endif
     linux_boot = (kernel_filename != NULL);
         
-    if (!linux_boot && hd_filename[0] == '\0' && hd_filename[2] == '\0' &&
+    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')
-        boot_device = 'd';
+    if (hd_filename[0] == '\0' && boot_device == 'c') {
+        if (fd_filename[0] != '\0')
+            boot_device = 'a';
+        else
+            boot_device = 'd';
+    }
 
 #if !defined(CONFIG_SOFTMMU)
     /* must avoid mmap() usage of glibc by setting a buffer "by hand" */
@@ -3416,18 +5517,31 @@ int main(int argc, char **argv)
 #else
     setvbuf(stdout, NULL, _IOLBF, 0);
 #endif
-
-    /* init network tun interface */
-#if defined (TARGET_I386)
-    if (net_fd < 0)
-       net_init();
+    
+#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 */
-    total_ram_size = phys_ram_size + vga_ram_size;
+    phys_ram_size = ram_size + vga_ram_size + bios_size;
 
 #ifdef CONFIG_SOFTMMU
-    phys_ram_base = malloc(total_ram_size);
+    phys_ram_base = qemu_vmalloc(phys_ram_size);
     if (!phys_ram_base) {
         fprintf(stderr, "Could not allocate physical memory\n");
         exit(1);
@@ -3453,10 +5567,10 @@ int main(int argc, char **argv)
                     phys_ram_file);
             exit(1);
         }
-        ftruncate(phys_ram_fd, total_ram_size);
+        ftruncate(phys_ram_fd, phys_ram_size);
         unlink(phys_ram_file);
-        phys_ram_base = mmap(get_mmap_addr(total_ram_size), 
-                             total_ram_size, 
+        phys_ram_base = mmap(get_mmap_addr(phys_ram_size), 
+                             phys_ram_size, 
                              PROT_WRITE | PROT_READ, MAP_SHARED | MAP_FIXED, 
                              phys_ram_fd, 0);
         if (phys_ram_base == MAP_FAILED) {
@@ -3466,221 +5580,193 @@ int main(int argc, char **argv)
     }
 #endif
 
+    /* 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]) {
-            bs_table[i] = bdrv_open(hd_filename[i], snapshot);
             if (!bs_table[i]) {
-                fprintf(stderr, "qemu: could not open hard disk image '%s\n",
+                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);
+            }
         }
     }
 
-    /* init CPU state */
-    env = cpu_init();
-    global_env = env;
-    cpu_single_env = env;
-
-    init_ioports();
-
-    /* allocate RAM */
-    cpu_register_physical_memory(0, phys_ram_size, 0);
-
-    if (linux_boot) {
-        /* now we can load the kernel */
-        ret = load_kernel(kernel_filename, phys_ram_base + KERNEL_LOAD_ADDR);
-        if (ret < 0) {
-            fprintf(stderr, "qemu: could not load kernel '%s'\n", 
-                    kernel_filename);
-            exit(1);
-        }
-        
-        /* load initrd */
-        initrd_size = 0;
-        if (initrd_filename) {
-            initrd_size = load_image(initrd_filename, phys_ram_base + INITRD_LOAD_ADDR);
-            if (initrd_size < 0) {
-                fprintf(stderr, "qemu: could not load initial ram disk '%s'\n", 
-                        initrd_filename);
-                exit(1);
+    /* 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);
+                }
             }
         }
-        
-        /* init kernel params */
-#ifdef TARGET_I386
-        params = (void *)(phys_ram_base + KERNEL_PARAMS_ADDR);
-        memset(params, 0, sizeof(struct linux_params));
-        params->mount_root_rdonly = 0;
-        stw_raw(&params->cl_magic, 0xA33F);
-        stw_raw(&params->cl_offset, params->commandline - (uint8_t *)params);
-        stl_raw(&params->alt_mem_k, (phys_ram_size / 1024) - 1024);
-        pstrcat(params->commandline, sizeof(params->commandline), kernel_cmdline);
-        params->loader_type = 0x01;
-        if (initrd_size > 0) {
-            stl_raw(&params->initrd_start, INITRD_LOAD_ADDR);
-            stl_raw(&params->initrd_size, initrd_size);
-        }
-        params->orig_video_lines = 25;
-        params->orig_video_cols = 80;
-
-        /* setup basic memory access */
-        env->cr[0] = 0x00000033;
-        env->hflags |= HF_PE_MASK;
-        cpu_x86_init_mmu(env);
-        
-        memset(params->idt_table, 0, sizeof(params->idt_table));
-        
-        stq_raw(&params->gdt_table[2], 0x00cf9a000000ffffLL); /* KERNEL_CS */
-        stq_raw(&params->gdt_table[3], 0x00cf92000000ffffLL); /* KERNEL_DS */
-        /* for newer kernels (2.6.0) CS/DS are at different addresses */
-        stq_raw(&params->gdt_table[12], 0x00cf9a000000ffffLL); /* KERNEL_CS */
-        stq_raw(&params->gdt_table[13], 0x00cf92000000ffffLL); /* KERNEL_DS */
-        
-        env->idt.base = (void *)((uint8_t *)params->idt_table - phys_ram_base);
-        env->idt.limit = sizeof(params->idt_table) - 1;
-        env->gdt.base = (void *)((uint8_t *)params->gdt_table - phys_ram_base);
-        env->gdt.limit = sizeof(params->gdt_table) - 1;
-        
-        cpu_x86_load_seg_cache(env, R_CS, KERNEL_CS, NULL, 0xffffffff, 0x00cf9a00);
-        cpu_x86_load_seg_cache(env, R_DS, KERNEL_DS, NULL, 0xffffffff, 0x00cf9200);
-        cpu_x86_load_seg_cache(env, R_ES, KERNEL_DS, NULL, 0xffffffff, 0x00cf9200);
-        cpu_x86_load_seg_cache(env, R_SS, KERNEL_DS, NULL, 0xffffffff, 0x00cf9200);
-        cpu_x86_load_seg_cache(env, R_FS, KERNEL_DS, NULL, 0xffffffff, 0x00cf9200);
-        cpu_x86_load_seg_cache(env, R_GS, KERNEL_DS, NULL, 0xffffffff, 0x00cf9200);
-        
-        env->eip = KERNEL_LOAD_ADDR;
-        env->regs[R_ESI] = KERNEL_PARAMS_ADDR;
-        env->eflags = 0x2;
-#elif defined (TARGET_PPC)
-        cpu_x86_init_mmu(env);
-        PPC_init_hw(env, phys_ram_size, KERNEL_LOAD_ADDR, ret,
-                    KERNEL_STACK_ADDR, boot_device);
-#endif
-    } else {
-        char buf[1024];
-
-        /* RAW PC boot */
-#if defined(TARGET_I386)
-        /* BIOS load */
-        snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
-        ret = load_image(buf, phys_ram_base + 0x000f0000);
-        if (ret != 0x10000) {
-            fprintf(stderr, "qemu: could not load PC bios '%s'\n", buf);
-            exit(1);
-        }
+    }
 
-        /* VGA BIOS load */
-        snprintf(buf, sizeof(buf), "%s/%s", bios_dir, VGABIOS_FILENAME);
-        ret = load_image(buf, phys_ram_base + 0x000c0000);
+    register_savevm("timer", 0, 1, timer_save, timer_load, NULL);
+    register_savevm("ram", 0, 1, ram_save, ram_load, NULL);
 
-        /* setup basic memory access */
-        env->cr[0] = 0x60000010;
-        cpu_x86_init_mmu(env);
-        
-        cpu_register_physical_memory(0xc0000, 0x10000, 0xc0000 | IO_MEM_ROM);
-        cpu_register_physical_memory(0xf0000, 0x10000, 0xf0000 | IO_MEM_ROM);
-
-        env->idt.limit = 0xffff;
-        env->gdt.limit = 0xffff;
-        env->ldt.limit = 0xffff;
-        env->ldt.flags = DESC_P_MASK;
-        env->tr.limit = 0xffff;
-        env->tr.flags = DESC_P_MASK;
-
-        /* not correct (CS base=0xffff0000) */
-        cpu_x86_load_seg_cache(env, R_CS, 0xf000, (uint8_t *)0x000f0000, 0xffff, 0); 
-        cpu_x86_load_seg_cache(env, R_DS, 0, NULL, 0xffff, 0);
-        cpu_x86_load_seg_cache(env, R_ES, 0, NULL, 0xffff, 0);
-        cpu_x86_load_seg_cache(env, R_SS, 0, NULL, 0xffff, 0);
-        cpu_x86_load_seg_cache(env, R_FS, 0, NULL, 0xffff, 0);
-        cpu_x86_load_seg_cache(env, R_GS, 0, NULL, 0xffff, 0);
-
-        env->eip = 0xfff0;
-        env->regs[R_EDX] = 0x600; /* indicate P6 processor */
-
-        env->eflags = 0x2;
-
-        bochs_bios_init();
-#elif defined(TARGET_PPC)
-        cpu_x86_init_mmu(env);
-        /* allocate ROM */
-        //        snprintf(buf, sizeof(buf), "%s/%s", bios_dir, BIOS_FILENAME);
-        snprintf(buf, sizeof(buf), "%s", BIOS_FILENAME);
-        printf("load BIOS at %p\n", phys_ram_base + 0x000f0000);
-        ret = load_image(buf, phys_ram_base + 0x000f0000);
-        if (ret != 0x10000) {
-            fprintf(stderr, "qemu: could not load PPC bios '%s' (%d)\n%m\n",
-                    buf, ret);
-            exit(1);
-        }
-#endif
-    }
+    init_ioports();
+    cpu_calibrate_ticks();
 
     /* terminal init */
     if (nographic) {
         dumb_display_init(ds);
+    } else if (vnc_display != -1) {
+       vnc_display_init(ds, vnc_display);
     } else {
-#ifdef CONFIG_SDL
-        sdl_display_init(ds);
+#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
     }
-    /* init basic PC hardware */
-    register_ioport_write(0x80, 1, ioport80_write, 1);
 
-    vga_initialize(ds, phys_ram_base + phys_ram_size, phys_ram_size, 
-             vga_ram_size);
-#if defined (TARGET_I386)
-    cmos_init();
+    monitor_hd = qemu_chr_open(monitor_device);
+    if (!monitor_hd) {
+        fprintf(stderr, "qemu: could not open monitor device '%s'\n", monitor_device);
+        exit(1);
+    }
+    monitor_init(monitor_hd, !nographic);
+
+    for(i = 0; i < MAX_SERIAL_PORTS; i++) {
+        if (serial_devices[i][0] != '\0') {
+            serial_hds[i] = qemu_chr_open(serial_devices[i]);
+            if (!serial_hds[i]) {
+                fprintf(stderr, "qemu: could not open serial device '%s'\n", 
+                        serial_devices[i]);
+                exit(1);
+            }
+            if (!strcmp(serial_devices[i], "vc"))
+                qemu_chr_printf(serial_hds[i], "serial%d console\n", i);
+        }
+    }
+
+    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\n", i);
+        }
+    }
+
+    /* setup cpu signal handlers for MMU / self modifying code handling */
+#if !defined(CONFIG_SOFTMMU)
+    
+#if defined (TARGET_I386) && defined(USE_CODE_COPY)
+    {
+        stack_t stk;
+        signal_stack = memalign(16, SIGNAL_STACK_SIZE);
+        stk.ss_sp = signal_stack;
+        stk.ss_size = SIGNAL_STACK_SIZE;
+        stk.ss_flags = 0;
+
+        if (sigaltstack(&stk, NULL) < 0) {
+            perror("sigaltstack");
+            exit(1);
+        }
+    }
 #endif
-    pic_init();
-    pit_init();
-    serial_init();
-#if defined (TARGET_I386)
-    ne2000_init();
+    {
+        struct sigaction act;
+        
+        sigfillset(&act.sa_mask);
+        act.sa_flags = SA_SIGINFO;
+#if defined (TARGET_I386) && defined(USE_CODE_COPY)
+        act.sa_flags |= SA_ONSTACK;
 #endif
-    ide_init();
-    kbd_init();
-    AUD_init();
-    DMA_init();
-#if defined (TARGET_I386)
-    SB16_init();
+        act.sa_sigaction = host_segv_handler;
+        sigaction(SIGSEGV, &act, NULL);
+        sigaction(SIGBUS, &act, NULL);
+#if defined (TARGET_I386) && defined(USE_CODE_COPY)
+        sigaction(SIGFPE, &act, NULL);
 #endif
-#if defined (TARGET_PPC)
-    PPC_end_init();
+    }
 #endif
-    fdctrl_register((unsigned char **)fd_filename, snapshot, boot_device);
-    /* setup cpu signal handlers for MMU / self modifying code handling */
-    sigfillset(&act.sa_mask);
-    act.sa_flags = SA_SIGINFO;
-#if !defined(CONFIG_SOFTMMU)
-    act.sa_sigaction = host_segv_handler;
-    sigaction(SIGSEGV, &act, NULL);
-    sigaction(SIGBUS, &act, NULL);
-#endif
-
-    act.sa_sigaction = host_alarm_handler;
-    sigaction(SIGALRM, &act, NULL);
-
-    itv.it_interval.tv_sec = 0;
-    itv.it_interval.tv_usec = 1000;
-    itv.it_value.tv_sec = 0;
-    itv.it_value.tv_usec = 10 * 1000;
-    setitimer(ITIMER_REAL, &itv, NULL);
-    /* we probe the tick duration of the kernel to inform the user if
-       the emulated kernel requested a too high timer frequency */
-    getitimer(ITIMER_REAL, &itv);
-    timer_ms = itv.it_interval.tv_usec / 1000;
-    pit_min_timer_count = ((uint64_t)itv.it_interval.tv_usec * PIT_FREQ) / 
-        1000000;
 
+#ifndef _WIN32
+    {
+        struct sigaction act;
+        sigfillset(&act.sa_mask);
+        act.sa_flags = 0;
+        act.sa_handler = SIG_IGN;
+        sigaction(SIGPIPE, &act, NULL);
+    }
+#endif
+    init_timers();
+
+    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) {
-        cpu_gdbstub(NULL, main_loop, gdbstub_port);
-    } else {
-        main_loop(NULL);
+        if (gdbserver_start(gdbstub_port) < 0) {
+            fprintf(stderr, "Could not open gdbserver socket on port %d\n", 
+                    gdbstub_port);
+            exit(1);
+        } else {
+            printf("Waiting gdb connection on port %d\n", gdbstub_port);
+        }
+    } else 
+#endif
+    if (loadvm)
+        qemu_loadvm(loadvm);
+
+    {
+        /* XXX: simplify init */
+        read_passwords();
+        if (start_emulation) {
+            vm_start();
+        }
     }
+    main_loop();
+    quit_timers();
     return 0;
 }