text: #ifndef SYSEMU_H
  #define SYSEMU_H
  /* Misc. things related to the system emulator.  */
  
  /* vl.c */
  extern const char *bios_name;
  extern const char *bios_dir;
  
  extern int vm_running;
  extern const char *qemu_name;
  extern uint8_t qemu_uuid[];
  #define UUID_FMT "%02hhx%02hhx%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx-%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx"
  
  typedef struct vm_change_state_entry VMChangeStateEntry;
  typedef void VMChangeStateHandler(void *opaque, int running, int reason);
  
  VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
                                                       void *opaque);
  void qemu_del_vm_change_state_handler(VMChangeStateEntry *e);
  
  void vm_start(void);
  void vm_stop(int reason);
  
  int64_t cpu_get_ticks(void);
  void cpu_enable_ticks(void);
  void cpu_disable_ticks(void);
  
  void qemu_system_reset_request(void);
  void qemu_system_shutdown_request(void);
  void qemu_system_powerdown_request(void);
  int qemu_shutdown_requested(void);
  int qemu_reset_requested(void);
  int qemu_powerdown_requested(void);
  #if !defined(TARGET_SPARC) && !defined(TARGET_I386)
  // Please implement a power failure function to signal the OS
  #define qemu_system_powerdown() do{}while(0)
  #else
  void qemu_system_powerdown(void);
  #endif
  void qemu_system_reset(void);
  
  void do_savevm(const char *name);
  void do_loadvm(const char *name);
  void do_delvm(const char *name);
  void do_info_snapshots(void);
  
  #ifdef CONFIG_PASSTHROUGH
  int pci_emulation_add(char *config_text);
  #endif
  
  void qemu_announce_self(void);
  
  void main_loop_wait(int timeout);
  
  int qemu_savevm_state_begin(QEMUFile *f);
  int qemu_savevm_state_iterate(QEMUFile *f);
  int qemu_savevm_state_complete(QEMUFile *f);
  int qemu_savevm_state(QEMUFile *f);
  int qemu_loadvm_state(QEMUFile *f);
  
  #ifdef _WIN32
  /* Polling handling */
  
  /* return TRUE if no sleep should be done afterwards */
  typedef int PollingFunc(void *opaque);
  
  int qemu_add_polling_cb(PollingFunc *func, void *opaque);
  void qemu_del_polling_cb(PollingFunc *func, void *opaque);
  
  /* Wait objects handling */
  typedef void WaitObjectFunc(void *opaque);
  
  int qemu_add_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque);
  void qemu_del_wait_object(HANDLE handle, WaitObjectFunc *func, void *opaque);
  #endif
  
  /* TAP win32 */
  int tap_win32_init(VLANState *vlan, const char *model,
                     const char *name, const char *ifname);
  
  /* SLIRP */
  void do_info_slirp(void);
  
  extern int bios_size;
  extern int cirrus_vga_enabled;
  extern int std_vga_enabled;
  extern int vmsvga_enabled;
  extern int gfx_passthru;
  extern int graphic_width;
  extern int graphic_height;
  extern int graphic_depth;
  extern int nographic;
  extern const char *keyboard_layout;
  extern int win2k_install_hack;
  extern int rtc_td_hack;
  extern int alt_grab;
  extern int usb_enabled;
  extern int smp_cpus;
  extern int cursor_hide;
  extern int graphic_rotate;
  extern int no_quit;
  extern int semihosting_enabled;
  extern int old_param;
  extern const char *bootp_filename;
  
  #ifdef USE_KQEMU
  extern int kqemu_allowed;
  #endif
  
  #define MAX_OPTION_ROMS 16
  extern const char *option_rom[MAX_OPTION_ROMS];
  extern int nb_option_roms;
  
  #if defined(TARGET_SPARC) || defined(TARGET_PPC)
  #define MAX_PROM_ENVS 128
  extern const char *prom_envs[MAX_PROM_ENVS];
  extern unsigned int nb_prom_envs;
  #endif
  
  #if defined (TARGET_PPC)
  #define BIOS_SIZE (1024 * 1024)
  #elif defined (TARGET_SPARC64)
  #define BIOS_SIZE ((512 + 32) * 1024)
  #elif defined(TARGET_MIPS)
  #define BIOS_SIZE (4 * 1024 * 1024)
  #endif
  
  typedef enum {
      IF_BLKTAP,
      IF_IDE, IF_SCSI, IF_FLOPPY, IF_PFLASH, IF_MTD, IF_SD, IF_VIRTIO, IF_XEN
  } BlockInterfaceType;
  
  typedef enum {
      BLOCK_ERR_REPORT, BLOCK_ERR_IGNORE, BLOCK_ERR_STOP_ENOSPC,
      BLOCK_ERR_STOP_ANY
  } BlockInterfaceErrorAction;
  
  typedef struct DriveInfo {
      BlockDriverState *bdrv;
      BlockInterfaceType type;
      int bus;
      int unit;
      int used;
      int drive_opt_idx;
      BlockInterfaceErrorAction onerror;
      char serial[21];
  } DriveInfo;
  
  #define MAX_IDE_DEVS	2
  #define MAX_SCSI_DEVS	7
  #define MAX_DRIVES 32
  
  extern int nb_drives;
  extern DriveInfo drives_table[MAX_DRIVES+1];
  
  extern int drive_get_index(BlockInterfaceType type, int bus, int unit);
  extern int drive_get_max_bus(BlockInterfaceType type);
  extern void drive_uninit(BlockDriverState *bdrv);
  extern void drive_remove(int index);
  extern const char *drive_get_serial(BlockDriverState *bdrv);
  extern BlockInterfaceErrorAction drive_get_onerror(BlockDriverState *bdrv);
  
  struct drive_opt {
      const char *file;
      char opt[1024];
      int used;
  };
  
  extern struct drive_opt drives_opt[MAX_DRIVES];
  extern int nb_drives_opt;
  
  extern int drive_add(const char *file, const char *fmt, ...);
  extern int drive_init(struct drive_opt *arg, int snapshot, void *machine);
  
  /* acpi */
  void qemu_cpu_add_remove(int cpu, int state);
  void qemu_system_hot_add_init(void);
  void qemu_system_device_hot_add(int pcibus, int slot, int state);
  
  /* device-hotplug */
  
  typedef int (dev_match_fn)(void *dev_private, void *arg);
  
  int add_init_drive(const char *opts);
  void destroy_nic(dev_match_fn *match_fn, void *arg);
  void destroy_bdrvs(dev_match_fn *match_fn, void *arg);
  
  /* pci-hotplug */
  void pci_device_hot_add(const char *pci_addr, const char *type, const char *opts);
  void drive_hot_add(const char *pci_addr, const char *opts);
  void pci_device_hot_remove(const char *pci_addr);
  void pci_device_hot_remove_success(int pcibus, int slot);
  
  /* serial ports */
  
  #define MAX_SERIAL_PORTS 4
  
  extern CharDriverState *serial_hds[MAX_SERIAL_PORTS];
  
  /* parallel ports */
  
  #define MAX_PARALLEL_PORTS 3
  
  extern CharDriverState *parallel_hds[MAX_PARALLEL_PORTS];
  
  /* virtio consoles */
  
  #define MAX_VIRTIO_CONSOLES 1
  
  extern CharDriverState *virtcon_hds[MAX_VIRTIO_CONSOLES];
  
  #define TFR(expr) do { if ((expr) != -1) break; } while (errno == EINTR)
  
  #ifdef NEED_CPU_H
  /* loader.c */
  int get_image_size(const char *filename);
  int load_image(const char *filename, uint8_t *addr); /* deprecated */
  int load_image_targphys(const char *filename, target_phys_addr_t, int max_sz);
  int load_elf(const char *filename, int64_t address_offset,
               uint64_t *pentry, uint64_t *lowaddr, uint64_t *highaddr);
  int load_aout(const char *filename, target_phys_addr_t addr, int max_sz);
  int load_uimage(const char *filename, target_ulong *ep, target_ulong *loadaddr,
                  int *is_linux);
  
  int fread_targphys(target_phys_addr_t dst_addr, size_t nbytes, FILE *f);
  int fread_targphys_ok(target_phys_addr_t dst_addr, size_t nbytes, FILE *f);
  int read_targphys(int fd, target_phys_addr_t dst_addr, size_t nbytes);
  void pstrcpy_targphys(target_phys_addr_t dest, int buf_size,
                        const char *source);
  #endif
  
  #ifdef HAS_AUDIO
  struct soundhw {
      const char *name;
      const char *descr;
      int enabled;
      int isa;
      union {
          int (*init_isa) (AudioState *s, qemu_irq *pic);
          int (*init_pci) (PCIBus *bus, AudioState *s);
      } init;
  };
  
  extern struct soundhw soundhw[];
  #endif
  
  void do_usb_add(const char *devname);
  void do_usb_del(const char *devname);
  void usb_info(void);
  
  const char *get_opt_name(char *buf, int buf_size, const char *p);
  const char *get_opt_value(char *buf, int buf_size, const char *p);
  int get_param_value(char *buf, int buf_size,
                      const char *tag, const char *str);
  int check_params(char *buf, int buf_size,
                   const char * const *params, const char *str);
  
  #endif
  