linux/arch/x86/include/asm/vsyscall.h

37 lines
779 B
C
Raw Normal View History

#ifndef _ASM_X86_VSYSCALL_H
#define _ASM_X86_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>
/* Definitions for CONFIG_GENERIC_TIME definitions */
#define __vsyscall_fn \
__attribute__ ((unused, __section__(".vsyscall_fn"))) notrace
#define VGETCPU_RDTSCP 1
#define VGETCPU_LSL 2
/* kernel space (writeable) */
extern int vgetcpu_mode;
extern struct timezone sys_tz;
#include <asm/vvar.h>
extern void map_vsyscall(void);
#endif /* __KERNEL__ */
#endif /* _ASM_X86_VSYSCALL_H */