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77ef50a5 VN |
1 | #ifndef ASM_X86__VSYSCALL_H |
2 | #define ASM_X86__VSYSCALL_H | |
1da177e4 | 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__ \ |
26 | ((unused, __section__ (".vsyscall_clock"),aligned(16))) | |
23adec55 SR |
27 | #define __vsyscall_fn \ |
28 | __attribute__ ((unused, __section__(".vsyscall_fn"))) notrace | |
1da177e4 | 29 | |
c08c8205 VP |
30 | #define VGETCPU_RDTSCP 1 |
31 | #define VGETCPU_LSL 2 | |
32 | ||
c08c8205 | 33 | extern int __vgetcpu_mode; |
1da177e4 | 34 | extern volatile unsigned long __jiffies; |
1da177e4 LT |
35 | |
36 | /* kernel space (writeable) */ | |
c08c8205 | 37 | extern int vgetcpu_mode; |
1da177e4 | 38 | extern struct timezone sys_tz; |
1da177e4 | 39 | |
e4026440 IM |
40 | extern void map_vsyscall(void); |
41 | ||
1da177e4 LT |
42 | #endif /* __KERNEL__ */ |
43 | ||
77ef50a5 | 44 | #endif /* ASM_X86__VSYSCALL_H */ |