text: #ifndef XEN_OPS_H
  #define XEN_OPS_H
  
  #include <linux/init.h>
  #include <linux/clocksource.h>
  #include <linux/irqreturn.h>
  #include <xen/xen-ops.h>
  
  /* These are code, but not functions.  Defined in entry.S */
  extern const char xen_hypervisor_callback[];
  extern const char xen_failsafe_callback[];
  
  extern void *xen_initial_gdt;
  
  struct trap_info;
  void xen_copy_trap_info(struct trap_info *traps);
  
  DECLARE_PER_CPU(struct vcpu_info, xen_vcpu_info);
  DECLARE_PER_CPU(unsigned long, xen_cr3);
  DECLARE_PER_CPU(unsigned long, xen_current_cr3);
  
  extern struct start_info *xen_start_info;
  extern struct shared_info xen_dummy_shared_info;
  extern struct shared_info *HYPERVISOR_shared_info;
  
  void xen_setup_mfn_list_list(void);
  void xen_setup_shared_info(void);
  void xen_setup_machphys_mapping(void);
  pgd_t *xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn);
  void xen_ident_map_ISA(void);
  void xen_reserve_top(void);
  
  char * __init xen_memory_setup(void);
  void __init xen_arch_setup(void);
  void __init xen_init_IRQ(void);
  void xen_enable_sysenter(void);
  void xen_enable_syscall(void);
  void xen_vcpu_restore(void);
  
  void __init xen_build_dynamic_phys_to_machine(void);
  
  void xen_init_irq_ops(void);
  void xen_setup_timer(int cpu);
  void xen_teardown_timer(int cpu);
  cycle_t xen_clocksource_read(void);
  void xen_setup_cpu_clockevents(void);
  unsigned long xen_tsc_khz(void);
  void __init xen_time_init(void);
  unsigned long xen_get_wallclock(void);
  int xen_set_wallclock(unsigned long time);
  unsigned long long xen_sched_clock(void);
  
  irqreturn_t xen_debug_interrupt(int irq, void *dev_id);
  
  bool xen_vcpu_stolen(int vcpu);
  
  void xen_setup_vcpu_info_placement(void);
  
  #ifdef CONFIG_SMP
  void xen_smp_init(void);
  
  extern cpumask_var_t xen_cpu_initialized_map;
  #else
  static inline void xen_smp_init(void) {}
  #endif
  
  #ifdef CONFIG_PARAVIRT_SPINLOCKS
  void __init xen_init_spinlocks(void);
  __cpuinit void xen_init_lock_cpu(int cpu);
  void xen_uninit_lock_cpu(int cpu);
  #else
  static inline void xen_init_spinlocks(void)
  {
  }
  static inline void xen_init_lock_cpu(int cpu)
  {
  }
  static inline void xen_uninit_lock_cpu(int cpu)
  {
  }
  #endif
  
  /* Declare an asm function, along with symbols needed to make it
     inlineable */
  #define DECL_ASM(ret, name, ...)		\
  	ret name(__VA_ARGS__);			\
  	extern char name##_end[];		\
  	extern char name##_reloc[]		\
  
  DECL_ASM(void, xen_irq_enable_direct, void);
  DECL_ASM(void, xen_irq_disable_direct, void);
  DECL_ASM(unsigned long, xen_save_fl_direct, void);
  DECL_ASM(void, xen_restore_fl_direct, unsigned long);
  
  /* These are not functions, and cannot be called normally */
  void xen_iret(void);
  void xen_sysexit(void);
  void xen_sysret32(void);
  void xen_sysret64(void);
  void xen_adjust_exception_frame(void);
  
  #endif /* XEN_OPS_H */
  