1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef ASM_VDSO_GETTIMEOFDAY_H
#define ASM_VDSO_GETTIMEOFDAY_H
#define VDSO_HAS_TIME 1
#define VDSO_HAS_CLOCK_GETRES 1
#include <asm/timex.h>
#include <asm/unistd.h>
#include <asm/vdso.h>
#include <linux/compiler.h>
#define vdso_calc_delta __arch_vdso_calc_delta
static __always_inline u64 __arch_vdso_calc_delta(u64 cycles, u64 last, u64 mask, u32 mult)
{
return (cycles - last) * mult;
}
static __always_inline const struct vdso_data *__arch_get_vdso_data(void)
{
return _vdso_data;
}
static inline u64 __arch_get_hw_counter(s32 clock_mode, const struct vdso_data *vd)
{
const struct vdso_data *vdso = __arch_get_vdso_data();
u64 adj, now;
now = get_tod_clock();
adj = vdso->arch_data.tod_steering_end - now;
if (unlikely((s64) adj > 0))
now += (vdso->arch_data.tod_steering_delta < 0) ? (adj >> 15) : -(adj >> 15);
return now;
}
static __always_inline
long clock_gettime_fallback(clockid_t clkid, struct __kernel_timespec *ts)
{
register unsigned long r1 __asm__("r1") = __NR_clock_gettime;
register unsigned long r2 __asm__("r2") = (unsigned long)clkid;
register void *r3 __asm__("r3") = ts;
asm ("svc 0\n" : "+d" (r2) : "d" (r1), "d" (r3) : "cc", "memory");
return r2;
}
static __always_inline
long gettimeofday_fallback(register struct __kernel_old_timeval *tv,
register struct timezone *tz)
{
register unsigned long r1 __asm__("r1") = __NR_gettimeofday;
register unsigned long r2 __asm__("r2") = (unsigned long)tv;
register void *r3 __asm__("r3") = tz;
asm ("svc 0\n" : "+d" (r2) : "d" (r1), "d" (r3) : "cc", "memory");
return r2;
}
static __always_inline
long clock_getres_fallback(clockid_t clkid, struct __kernel_timespec *ts)
{
register unsigned long r1 __asm__("r1") = __NR_clock_getres;
register unsigned long r2 __asm__("r2") = (unsigned long)clkid;
register void *r3 __asm__("r3") = ts;
asm ("svc 0\n" : "+d" (r2) : "d" (r1), "d" (r3) : "cc", "memory");
return r2;
}
#endif
|
