100 lines
2.2 KiB
C
100 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Author: Huacai Chen <chenhuacai@loongson.cn>
|
|
*
|
|
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
|
|
*/
|
|
#ifndef __ASM_VDSO_GETTIMEOFDAY_H
|
|
#define __ASM_VDSO_GETTIMEOFDAY_H
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <asm/unistd.h>
|
|
#include <asm/vdso/vdso.h>
|
|
|
|
#define VDSO_HAS_CLOCK_GETRES 1
|
|
|
|
static __always_inline long gettimeofday_fallback(
|
|
struct __kernel_old_timeval *_tv,
|
|
struct timezone *_tz)
|
|
{
|
|
register struct __kernel_old_timeval *tv asm("a0") = _tv;
|
|
register struct timezone *tz asm("a1") = _tz;
|
|
register long nr asm("a7") = __NR_gettimeofday;
|
|
register long ret asm("a0");
|
|
|
|
asm volatile(
|
|
" syscall 0\n"
|
|
: "+r" (ret)
|
|
: "r" (nr), "r" (tv), "r" (tz)
|
|
: "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7",
|
|
"$t8", "memory");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static __always_inline long clock_gettime_fallback(
|
|
clockid_t _clkid,
|
|
struct __kernel_timespec *_ts)
|
|
{
|
|
register clockid_t clkid asm("a0") = _clkid;
|
|
register struct __kernel_timespec *ts asm("a1") = _ts;
|
|
register long nr asm("a7") = __NR_clock_gettime;
|
|
register long ret asm("a0");
|
|
|
|
asm volatile(
|
|
" syscall 0\n"
|
|
: "+r" (ret)
|
|
: "r" (nr), "r" (clkid), "r" (ts)
|
|
: "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7",
|
|
"$t8", "memory");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static __always_inline int clock_getres_fallback(
|
|
clockid_t _clkid,
|
|
struct __kernel_timespec *_ts)
|
|
{
|
|
register clockid_t clkid asm("a0") = _clkid;
|
|
register struct __kernel_timespec *ts asm("a1") = _ts;
|
|
register long nr asm("a7") = __NR_clock_getres;
|
|
register long ret asm("a0");
|
|
|
|
asm volatile(
|
|
" syscall 0\n"
|
|
: "+r" (ret)
|
|
: "r" (nr), "r" (clkid), "r" (ts)
|
|
: "$t0", "$t1", "$t2", "$t3", "$t4", "$t5", "$t6", "$t7",
|
|
"$t8", "memory");
|
|
|
|
return ret;
|
|
}
|
|
|
|
static __always_inline u64 __arch_get_hw_counter(s32 clock_mode,
|
|
const struct vdso_data *vd)
|
|
{
|
|
uint64_t count;
|
|
|
|
__asm__ __volatile__(
|
|
" rdtime.d %0, $zero\n"
|
|
: "=r" (count));
|
|
|
|
return count;
|
|
}
|
|
|
|
static inline bool loongarch_vdso_hres_capable(void)
|
|
{
|
|
return true;
|
|
}
|
|
#define __arch_vdso_hres_capable loongarch_vdso_hres_capable
|
|
|
|
static __always_inline const struct vdso_data *__arch_get_vdso_data(void)
|
|
{
|
|
return get_vdso_data();
|
|
}
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
#endif /* __ASM_VDSO_GETTIMEOFDAY_H */
|