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Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2
3#ifndef __ASM_VDSO_CSKY_GETTIMEOFDAY_H
4#define __ASM_VDSO_CSKY_GETTIMEOFDAY_H
5
6#ifndef __ASSEMBLY__
7
8#include <asm/barrier.h>
9#include <asm/unistd.h>
10#include <abi/regdef.h>
11#include <uapi/linux/time.h>
12
13#define VDSO_HAS_CLOCK_GETRES 1
14
15static __always_inline
16int gettimeofday_fallback(struct __kernel_old_timeval *_tv,
17 struct timezone *_tz)
18{
19 register struct __kernel_old_timeval *tv asm("a0") = _tv;
20 register struct timezone *tz asm("a1") = _tz;
21 register long ret asm("a0");
22 register long nr asm(syscallid) = __NR_gettimeofday;
23
24 asm volatile ("trap 0\n"
25 : "=r" (ret)
26 : "r"(tv), "r"(tz), "r"(nr)
27 : "memory");
28
29 return ret;
30}
31
32static __always_inline
33long clock_gettime_fallback(clockid_t _clkid, struct __kernel_timespec *_ts)
34{
35 register clockid_t clkid asm("a0") = _clkid;
36 register struct __kernel_timespec *ts asm("a1") = _ts;
37 register long ret asm("a0");
38 register long nr asm(syscallid) = __NR_clock_gettime64;
39
40 asm volatile ("trap 0\n"
41 : "=r" (ret)
42 : "r"(clkid), "r"(ts), "r"(nr)
43 : "memory");
44
45 return ret;
46}
47
48static __always_inline
49long clock_gettime32_fallback(clockid_t _clkid, struct old_timespec32 *_ts)
50{
51 register clockid_t clkid asm("a0") = _clkid;
52 register struct old_timespec32 *ts asm("a1") = _ts;
53 register long ret asm("a0");
54 register long nr asm(syscallid) = __NR_clock_gettime;
55
56 asm volatile ("trap 0\n"
57 : "=r" (ret)
58 : "r"(clkid), "r"(ts), "r"(nr)
59 : "memory");
60
61 return ret;
62}
63
64static __always_inline
65int clock_getres_fallback(clockid_t _clkid, struct __kernel_timespec *_ts)
66{
67 register clockid_t clkid asm("a0") = _clkid;
68 register struct __kernel_timespec *ts asm("a1") = _ts;
69 register long ret asm("a0");
70 register long nr asm(syscallid) = __NR_clock_getres_time64;
71
72 asm volatile ("trap 0\n"
73 : "=r" (ret)
74 : "r"(clkid), "r"(ts), "r"(nr)
75 : "memory");
76
77 return ret;
78}
79
80static __always_inline
81int clock_getres32_fallback(clockid_t _clkid, struct old_timespec32 *_ts)
82{
83 register clockid_t clkid asm("a0") = _clkid;
84 register struct old_timespec32 *ts asm("a1") = _ts;
85 register long ret asm("a0");
86 register long nr asm(syscallid) = __NR_clock_getres;
87
88 asm volatile ("trap 0\n"
89 : "=r" (ret)
90 : "r"(clkid), "r"(ts), "r"(nr)
91 : "memory");
92
93 return ret;
94}
95
96uint64_t csky_pmu_read_cc(void);
97static __always_inline u64 __arch_get_hw_counter(s32 clock_mode,
98 const struct vdso_data *vd)
99{
100#ifdef CONFIG_CSKY_PMU_V1
101 return csky_pmu_read_cc();
102#else
103 return 0;
104#endif
105}
106
107static __always_inline const struct vdso_data *__arch_get_vdso_data(void)
108{
109 return _vdso_data;
110}
111
112#endif /* !__ASSEMBLY__ */
113
114#endif /* __ASM_VDSO_CSKY_GETTIMEOFDAY_H */