tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#ifndef _ASM_X86_64_VSYSCALL_H_
2#define _ASM_X86_64_VSYSCALL_H_
3
4enum vsyscall_num {
5 __NR_vgettimeofday,
6 __NR_vtime,
7 __NR_vgetcpu,
8};
9
10#define VSYSCALL_START (-10UL << 20)
11#define VSYSCALL_SIZE 1024
12#define VSYSCALL_END (-2UL << 20)
13#define VSYSCALL_MAPPED_PAGES 1
14#define VSYSCALL_ADDR(vsyscall_nr) (VSYSCALL_START+VSYSCALL_SIZE*(vsyscall_nr))
15
16#ifdef __KERNEL__
17#include <linux/seqlock.h>
18
19#define __section_vgetcpu_mode __attribute__ ((unused, __section__ (".vgetcpu_mode"), aligned(16)))
20#define __section_jiffies __attribute__ ((unused, __section__ (".jiffies"), aligned(16)))
21
22/* Definitions for CONFIG_GENERIC_TIME definitions */
23#define __section_vsyscall_gtod_data __attribute__ \
24 ((unused, __section__ (".vsyscall_gtod_data"),aligned(16)))
25#define __section_vsyscall_clock __attribute__ \
26 ((unused, __section__ (".vsyscall_clock"),aligned(16)))
27#define __vsyscall_fn __attribute__ ((unused,__section__(".vsyscall_fn")))
28
29#define VGETCPU_RDTSCP 1
30#define VGETCPU_LSL 2
31
32extern int __vgetcpu_mode;
33extern volatile unsigned long __jiffies;
34
35/* kernel space (writeable) */
36extern int vgetcpu_mode;
37extern struct timezone sys_tz;
38
39extern void map_vsyscall(void);
40
41#endif /* __KERNEL__ */
42
43#endif /* _ASM_X86_64_VSYSCALL_H_ */