[deliverable/linux.git] / include / asm-x86 / vsyscall.h

#ifndef _ASM_X86_64_VSYSCALL_H_
#define _ASM_X86_64_VSYSCALL_H_

enum vsyscall_num {
	__NR_vgettimeofday,
	__NR_vtime,
	__NR_vgetcpu,
};

#define VSYSCALL_START (-10UL << 20)
#define VSYSCALL_SIZE 1024
#define VSYSCALL_END (-2UL << 20)
#define VSYSCALL_MAPPED_PAGES 1
#define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr))

#ifdef __KERNEL__
#include <linux/seqlock.h>

#define __section_vgetcpu_mode __attribute__ ((unused, __section__ (".vgetcpu_mode"), aligned(16)))
#define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16)))

/* Definitions for CONFIG_GENERIC_TIME definitions */
#define __section_vsyscall_gtod_data __attribute__ \
	((unused, __section__ (".vsyscall_gtod_data"),aligned(16)))
#define __section_vsyscall_clock __attribute__ \
	((unused, __section__ (".vsyscall_clock"),aligned(16)))
#define __vsyscall_fn __attribute__ ((unused,__section__(".vsyscall_fn")))

#define VGETCPU_RDTSCP	1
#define VGETCPU_LSL	2

extern int __vgetcpu_mode;
extern volatile unsigned long __jiffies;

/* kernel space (writeable) */
extern int vgetcpu_mode;
extern struct timezone sys_tz;

#endif /* __KERNEL__ */

#endif /* _ASM_X86_64_VSYSCALL_H_ */
Commit	Line	Data
1da177e4 LT	1	#ifndef _ASM_X86_64_VSYSCALL_H_
	2	#define _ASM_X86_64_VSYSCALL_H_
	3
1da177e4 LT	4	enum vsyscall_num {
	5	__NR_vgettimeofday,
	6	__NR_vtime,
c08c8205	7	__NR_vgetcpu,
1da177e4 LT	8	};
	9
	10	#define VSYSCALL_START (-10UL << 20)
	11	#define VSYSCALL_SIZE 1024
	12	#define VSYSCALL_END (-2UL << 20)
103efcd9	13	#define VSYSCALL_MAPPED_PAGES 1
1da177e4 LT	14	#define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr))
	15
	16	#ifdef __KERNEL__
75da736f	17	#include <linux/seqlock.h>
1da177e4	18
c08c8205	19	#define __section_vgetcpu_mode __attribute__ ((unused, __section__ (".vgetcpu_mode"), aligned(16)))
1da177e4	20	#define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16)))
1da177e4	21
7460ed28	22	/* Definitions for CONFIG_GENERIC_TIME definitions */
	23	#define __section_vsyscall_gtod_data __attribute__ \
	24	((unused, __section__ (".vsyscall_gtod_data"),aligned(16)))
2aae950b AK	25	#define __section_vsyscall_clock __attribute__ \
2aae950b AK	26	((unused, __section__ (".vsyscall_clock"),aligned(16)))
7460ed28	27	#define __vsyscall_fn __attribute__ ((unused,__section__(".vsyscall_fn")))
1da177e4	28
c08c8205 VP	29	#define VGETCPU_RDTSCP 1
	30	#define VGETCPU_LSL 2
	31
c08c8205	32	extern int __vgetcpu_mode;
1da177e4	33	extern volatile unsigned long __jiffies;
1da177e4 LT	34
1da177e4 LT	35	/* kernel space (writeable) */
c08c8205	36	extern int vgetcpu_mode;
1da177e4	37	extern struct timezone sys_tz;
1da177e4 LT	38
	39	#endif /* __KERNEL__ */
	40
	41	#endif /* _ASM_X86_64_VSYSCALL_H_ */