1 #ifndef _ASM_X86_64_VSYSCALL_H_
2 #define _ASM_X86_64_VSYSCALL_H_
4 #include <linux/seqlock.h>
11 #define VSYSCALL_START (-10UL << 20)
12 #define VSYSCALL_SIZE 1024
13 #define VSYSCALL_END (-2UL << 20)
14 #define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr))
18 #define __section_vxtime __attribute__ ((unused, __section__ (".vxtime"), aligned(16)))
19 #define __section_wall_jiffies __attribute__ ((unused, __section__ (".wall_jiffies"), aligned(16)))
20 #define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16)))
21 #define __section_sys_tz __attribute__ ((unused, __section__ (".sys_tz"), aligned(16)))
22 #define __section_sysctl_vsyscall __attribute__ ((unused, __section__ (".sysctl_vsyscall"), aligned(16)))
23 #define __section_xtime __attribute__ ((unused, __section__ (".xtime"), aligned(16)))
24 #define __section_xtime_lock __attribute__ ((unused, __section__ (".xtime_lock"), aligned(16)))
28 #define VXTIME_PMTMR 3
31 long hpet_address
; /* HPET base address */
33 unsigned long last_tsc
;
39 #define hpet_readl(a) readl((const void __iomem *)fix_to_virt(FIX_HPET_BASE) + a)
40 #define hpet_writel(d,a) writel(d, (void __iomem *)fix_to_virt(FIX_HPET_BASE) + a)
42 /* vsyscall space (readonly) */
43 extern struct vxtime_data __vxtime
;
44 extern struct timespec __xtime
;
45 extern volatile unsigned long __jiffies
;
46 extern unsigned long __wall_jiffies
;
47 extern struct timezone __sys_tz
;
48 extern seqlock_t __xtime_lock
;
50 /* kernel space (writeable) */
51 extern struct vxtime_data vxtime
;
52 extern unsigned long wall_jiffies
;
53 extern struct timezone sys_tz
;
54 extern int sysctl_vsyscall
;
55 extern seqlock_t xtime_lock
;
57 extern int sysctl_vsyscall
;
59 #define ARCH_HAVE_XTIME_LOCK 1
61 #endif /* __KERNEL__ */
63 #endif /* _ASM_X86_64_VSYSCALL_H_ */