text: #ifndef SYSEMU_H
  #define SYSEMU_H
  /* Misc. things related to the system emulator.  */
  
  #include "qemu/option.h"
  #include "qemu/queue.h"
  #include "qemu/timer.h"
  #include "qapi-types.h"
  #include "qemu/notify.h"
  #include "qemu/main-loop.h"
  #include "qemu/bitmap.h"
  #include "qemu/uuid.h"
  #include "qom/object.h"
  
  /* vl.c */
  
  extern const char *bios_name;
  
  extern const char *qemu_name;
  extern QemuUUID qemu_uuid;
  extern bool qemu_uuid_set;
  
  bool runstate_check(RunState state);
  void runstate_set(RunState new_state);
  int runstate_is_running(void);
  bool runstate_needs_reset(void);
  bool runstate_store(char *str, size_t size);
  typedef struct vm_change_state_entry VMChangeStateEntry;
  typedef void VMChangeStateHandler(void *opaque, int running, RunState state);
  
  VMChangeStateEntry *qemu_add_vm_change_state_handler(VMChangeStateHandler *cb,
                                                       void *opaque);
  void qemu_del_vm_change_state_handler(VMChangeStateEntry *e);
  void vm_state_notify(int running, RunState state);
  
  #define VMRESET_SILENT   false
  #define VMRESET_REPORT   true
  
  void vm_start(void);
  int vm_stop(RunState state);
  int vm_stop_force_state(RunState state);
  
  typedef enum WakeupReason {
      /* Always keep QEMU_WAKEUP_REASON_NONE = 0 */
      QEMU_WAKEUP_REASON_NONE = 0,
      QEMU_WAKEUP_REASON_RTC,
      QEMU_WAKEUP_REASON_PMTIMER,
      QEMU_WAKEUP_REASON_OTHER,
  } WakeupReason;
  
  void qemu_system_reset_request(void);
  void qemu_system_suspend_request(void);
  void qemu_register_suspend_notifier(Notifier *notifier);
  void qemu_system_wakeup_request(WakeupReason reason);
  void qemu_system_wakeup_enable(WakeupReason reason, bool enabled);
  void qemu_register_wakeup_notifier(Notifier *notifier);
  void qemu_system_shutdown_request(void);
  void qemu_system_powerdown_request(void);
  void qemu_register_powerdown_notifier(Notifier *notifier);
  void qemu_system_debug_request(void);
  void qemu_system_vmstop_request(RunState reason);
  void qemu_system_vmstop_request_prepare(void);
  int qemu_shutdown_requested_get(void);
  int qemu_reset_requested_get(void);
  void qemu_system_killed(int signal, pid_t pid);
  void qemu_devices_reset(void);
  void qemu_system_reset(bool report);
  void qemu_system_guest_panicked(void);
  size_t qemu_target_page_bits(void);
  
  void qemu_add_exit_notifier(Notifier *notify);
  void qemu_remove_exit_notifier(Notifier *notify);
  
  void qemu_add_machine_init_done_notifier(Notifier *notify);
  void qemu_remove_machine_init_done_notifier(Notifier *notify);
  
  void hmp_savevm(Monitor *mon, const QDict *qdict);
  int load_vmstate(const char *name);
  void hmp_delvm(Monitor *mon, const QDict *qdict);
  void hmp_info_snapshots(Monitor *mon, const QDict *qdict);
  
  void qemu_announce_self(void);
  
  /* Subcommands for QEMU_VM_COMMAND */
  enum qemu_vm_cmd {
      MIG_CMD_INVALID = 0,   /* Must be 0 */
      MIG_CMD_OPEN_RETURN_PATH,  /* Tell the dest to open the Return path */
      MIG_CMD_PING,              /* Request a PONG on the RP */
  
      MIG_CMD_POSTCOPY_ADVISE,       /* Prior to any page transfers, just
                                        warn we might want to do PC */
      MIG_CMD_POSTCOPY_LISTEN,       /* Start listening for incoming
                                        pages as it's running. */
      MIG_CMD_POSTCOPY_RUN,          /* Start execution */
  
      MIG_CMD_POSTCOPY_RAM_DISCARD,  /* A list of pages to discard that
                                        were previously sent during
                                        precopy but are dirty. */
      MIG_CMD_PACKAGED,          /* Send a wrapped stream within this stream */
      MIG_CMD_MAX
  };
  
  #define MAX_VM_CMD_PACKAGED_SIZE (1ul << 24)
  
  bool qemu_savevm_state_blocked(Error **errp);
  void qemu_savevm_state_begin(QEMUFile *f,
                               const MigrationParams *params);
  void qemu_savevm_state_header(QEMUFile *f);
  int qemu_savevm_state_iterate(QEMUFile *f, bool postcopy);
  void qemu_savevm_state_cleanup(void);
  void qemu_savevm_state_complete_postcopy(QEMUFile *f);
  void qemu_savevm_state_complete_precopy(QEMUFile *f, bool iterable_only);
  void qemu_savevm_state_pending(QEMUFile *f, uint64_t max_size,
                                 uint64_t *res_non_postcopiable,
                                 uint64_t *res_postcopiable);
  void qemu_savevm_command_send(QEMUFile *f, enum qemu_vm_cmd command,
                                uint16_t len, uint8_t *data);
  void qemu_savevm_send_ping(QEMUFile *f, uint32_t value);
  void qemu_savevm_send_open_return_path(QEMUFile *f);
  int qemu_savevm_send_packaged(QEMUFile *f, const uint8_t *buf, size_t len);
  void qemu_savevm_send_postcopy_advise(QEMUFile *f);
  void qemu_savevm_send_postcopy_listen(QEMUFile *f);
  void qemu_savevm_send_postcopy_run(QEMUFile *f);
  
  void qemu_savevm_send_postcopy_ram_discard(QEMUFile *f, const char *name,
                                             uint16_t len,
                                             uint64_t *start_list,
                                             uint64_t *length_list);
  
  int qemu_loadvm_state(QEMUFile *f);
  
  extern int autostart;
  
  typedef enum {
      VGA_NONE, VGA_STD, VGA_CIRRUS, VGA_VMWARE, VGA_XENFB, VGA_QXL,
      VGA_TCX, VGA_CG3, VGA_DEVICE, VGA_VIRTIO,
      VGA_TYPE_MAX,
  } VGAInterfaceType;
  
  extern int vga_interface_type;
  #define xenfb_enabled (vga_interface_type == VGA_XENFB)
  
  extern int graphic_width;
  extern int graphic_height;
  extern int graphic_depth;
  extern int display_opengl;
  extern const char *keyboard_layout;
  extern int win2k_install_hack;
  extern int alt_grab;
  extern int ctrl_grab;
  extern int smp_cpus;
  extern int max_cpus;
  extern int cursor_hide;
  extern int graphic_rotate;
  extern int no_quit;
  extern int no_shutdown;
  extern int old_param;
  extern int boot_menu;
  extern bool boot_strict;
  extern uint8_t *boot_splash_filedata;
  extern size_t boot_splash_filedata_size;
  extern bool enable_mlock;
  extern uint8_t qemu_extra_params_fw[2];
  extern QEMUClockType rtc_clock;
  extern const char *mem_path;
  extern int mem_prealloc;
  
  #define MAX_NODES 128
  #define NUMA_NODE_UNASSIGNED MAX_NODES
  
  /* The following shall be true for all CPUs:
   *   cpu->cpu_index < max_cpus <= MAX_CPUMASK_BITS
   *
   * Note that cpu->get_arch_id() may be larger than MAX_CPUMASK_BITS.
   */
  #define MAX_CPUMASK_BITS 288
  
  #define MAX_OPTION_ROMS 16
  typedef struct QEMUOptionRom {
      const char *name;
      int32_t bootindex;
  } QEMUOptionRom;
  extern QEMUOptionRom option_rom[MAX_OPTION_ROMS];
  extern int nb_option_roms;
  
  #define MAX_PROM_ENVS 128
  extern const char *prom_envs[MAX_PROM_ENVS];
  extern unsigned int nb_prom_envs;
  
  /* generic hotplug */
  void hmp_drive_add(Monitor *mon, const QDict *qdict);
  
  /* pcie aer error injection */
  void hmp_pcie_aer_inject_error(Monitor *mon, const QDict *qdict);
  
  /* 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];
  
  void hmp_usb_add(Monitor *mon, const QDict *qdict);
  void hmp_usb_del(Monitor *mon, const QDict *qdict);
  void hmp_info_usb(Monitor *mon, const QDict *qdict);
  
  void add_boot_device_path(int32_t bootindex, DeviceState *dev,
                            const char *suffix);
  char *get_boot_devices_list(size_t *size, bool ignore_suffixes);
  
  DeviceState *get_boot_device(uint32_t position);
  void check_boot_index(int32_t bootindex, Error **errp);
  void del_boot_device_path(DeviceState *dev, const char *suffix);
  void device_add_bootindex_property(Object *obj, int32_t *bootindex,
                                     const char *name, const char *suffix,
                                     DeviceState *dev, Error **errp);
  void restore_boot_order(void *opaque);
  void validate_bootdevices(const char *devices, Error **errp);
  
  /* handler to set the boot_device order for a specific type of MachineClass */
  typedef void QEMUBootSetHandler(void *opaque, const char *boot_order,
                                  Error **errp);
  void qemu_register_boot_set(QEMUBootSetHandler *func, void *opaque);
  void qemu_boot_set(const char *boot_order, Error **errp);
  
  QemuOpts *qemu_get_machine_opts(void);
  
  bool defaults_enabled(void);
  
  extern QemuOptsList qemu_legacy_drive_opts;
  extern QemuOptsList qemu_common_drive_opts;
  extern QemuOptsList qemu_drive_opts;
  extern QemuOptsList bdrv_runtime_opts;
  extern QemuOptsList qemu_chardev_opts;
  extern QemuOptsList qemu_device_opts;
  extern QemuOptsList qemu_netdev_opts;
  extern QemuOptsList qemu_net_opts;
  extern QemuOptsList qemu_global_opts;
  extern QemuOptsList qemu_mon_opts;
  
  #endif
  