1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef ASM_VDSO_GETTIMEOFDAY_H
3 #define ASM_VDSO_GETTIMEOFDAY_H
5 #define VDSO_HAS_TIME 1
7 #define VDSO_HAS_CLOCK_GETRES 1
10 #include <asm/unistd.h>
11 #include <linux/compiler.h>
13 #define vdso_calc_delta __arch_vdso_calc_delta
14 static __always_inline u64 __arch_vdso_calc_delta(u64 cycles, u64 last, u64 mask, u32 mult)
16 return (cycles - last) * mult;
19 static __always_inline const struct vdso_data *__arch_get_vdso_data(void)
24 static inline u64 __arch_get_hw_counter(s32 clock_mode, const struct vdso_data *vd)
28 now = get_tod_clock();
29 adj = vd->arch_data.tod_steering_end - now;
30 if (unlikely((s64) adj > 0))
31 now += (vd->arch_data.tod_steering_delta < 0) ? (adj >> 15) : -(adj >> 15);
35 static __always_inline
36 long clock_gettime_fallback(clockid_t clkid, struct __kernel_timespec *ts)
38 register unsigned long r1 __asm__("r1") = __NR_clock_gettime;
39 register unsigned long r2 __asm__("r2") = (unsigned long)clkid;
40 register void *r3 __asm__("r3") = ts;
42 asm ("svc 0\n" : "+d" (r2) : "d" (r1), "d" (r3) : "cc", "memory");
46 static __always_inline
47 long gettimeofday_fallback(register struct __kernel_old_timeval *tv,
48 register struct timezone *tz)
50 register unsigned long r1 __asm__("r1") = __NR_gettimeofday;
51 register unsigned long r2 __asm__("r2") = (unsigned long)tv;
52 register void *r3 __asm__("r3") = tz;
54 asm ("svc 0\n" : "+d" (r2) : "d" (r1), "d" (r3) : "cc", "memory");
58 static __always_inline
59 long clock_getres_fallback(clockid_t clkid, struct __kernel_timespec *ts)
61 register unsigned long r1 __asm__("r1") = __NR_clock_getres;
62 register unsigned long r2 __asm__("r2") = (unsigned long)clkid;
63 register void *r3 __asm__("r3") = ts;
65 asm ("svc 0\n" : "+d" (r2) : "d" (r1), "d" (r3) : "cc", "memory");
70 static __always_inline
71 const struct vdso_data *__arch_get_timens_vdso_data(const struct vdso_data *vd)