64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
#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
|
|
#define VXTIME_PMTMR 3
|
|
|
|
struct vxtime_data {
|
|
long hpet_address; /* HPET base address */
|
|
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;
|
|
|
|
extern int sysctl_vsyscall;
|
|
|
|
#define ARCH_HAVE_XTIME_LOCK 1
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _ASM_X86_64_VSYSCALL_H_ */
|