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#ifndef _ASM_X86_64_VSYSCALL_H_
#define _ASM_X86_64_VSYSCALL_H_
#include <linux/seqlock.h>
enum vsyscall_num {
__NR_vgettimeofday,
__NR_vtime,
};
#define VSYSCALL_START (-10UL << 20)
#define VSYSCALL_SIZE 1024
#define VSYSCALL_END (-2UL << 20)
#define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr))
#ifdef __KERNEL__
#define __section_vxtime __attribute__ ((unused, __section__ (".vxtime"), aligned(16)))
#define __section_wall_jiffies __attribute__ ((unused, __section__ (".wall_jiffies"), aligned(16)))
#define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16)))
#define __section_sys_tz __attribute__ ((unused, __section__ (".sys_tz"), aligned(16)))
#define __section_sysctl_vsyscall __attribute__ ((unused, __section__ (".sysctl_vsyscall"), aligned(16)))
#define __section_xtime __attribute__ ((unused, __section__ (".xtime"), aligned(16)))
#define __section_xtime_lock __attribute__ ((unused, __section__ (".xtime_lock"), aligned(16)))
#define VXTIME_TSC 1
#define VXTIME_HPET 2
struct vxtime_data {
long hpet_address; /* HPET base address */
unsigned long hz; /* HPET clocks / sec */
int last;
unsigned long last_tsc;
long quot;
long tsc_quot;
int mode;
};
#define hpet_readl(a) readl((void *)fix_to_virt(FIX_HPET_BASE) + a)
#define hpet_writel(d,a) writel(d, (void *)fix_to_virt(FIX_HPET_BASE) + a)
/* vsyscall space (readonly) */
extern struct vxtime_data __vxtime;
extern struct timespec __xtime;
extern volatile unsigned long __jiffies;
extern unsigned long __wall_jiffies;
extern struct timezone __sys_tz;
extern seqlock_t __xtime_lock;
/* kernel space (writeable) */
extern struct vxtime_data vxtime;
extern unsigned long wall_jiffies;
extern struct timezone sys_tz;
extern int sysctl_vsyscall;
extern seqlock_t xtime_lock;
#define ARCH_HAVE_XTIME_LOCK 1
#endif /* __KERNEL__ */
#endif /* _ASM_X86_64_VSYSCALL_H_ */
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