summaryrefslogtreecommitdiffstats
path: root/arch/csky/include/asm/vdso/gettimeofday.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/csky/include/asm/vdso/gettimeofday.h')
-rw-r--r--arch/csky/include/asm/vdso/gettimeofday.h114
1 files changed, 114 insertions, 0 deletions
diff --git a/arch/csky/include/asm/vdso/gettimeofday.h b/arch/csky/include/asm/vdso/gettimeofday.h
new file mode 100644
index 000000000..6c4f14469
--- /dev/null
+++ b/arch/csky/include/asm/vdso/gettimeofday.h
@@ -0,0 +1,114 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __ASM_VDSO_CSKY_GETTIMEOFDAY_H
+#define __ASM_VDSO_CSKY_GETTIMEOFDAY_H
+
+#ifndef __ASSEMBLY__
+
+#include <asm/barrier.h>
+#include <asm/unistd.h>
+#include <abi/regdef.h>
+#include <uapi/linux/time.h>
+
+#define VDSO_HAS_CLOCK_GETRES 1
+
+static __always_inline
+int 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 ret asm("a0");
+ register long nr asm(syscallid) = __NR_gettimeofday;
+
+ asm volatile ("trap 0\n"
+ : "=r" (ret)
+ : "r"(tv), "r"(tz), "r"(nr)
+ : "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 ret asm("a0");
+ register long nr asm(syscallid) = __NR_clock_gettime64;
+
+ asm volatile ("trap 0\n"
+ : "=r" (ret)
+ : "r"(clkid), "r"(ts), "r"(nr)
+ : "memory");
+
+ return ret;
+}
+
+static __always_inline
+long clock_gettime32_fallback(clockid_t _clkid, struct old_timespec32 *_ts)
+{
+ register clockid_t clkid asm("a0") = _clkid;
+ register struct old_timespec32 *ts asm("a1") = _ts;
+ register long ret asm("a0");
+ register long nr asm(syscallid) = __NR_clock_gettime;
+
+ asm volatile ("trap 0\n"
+ : "=r" (ret)
+ : "r"(clkid), "r"(ts), "r"(nr)
+ : "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 ret asm("a0");
+ register long nr asm(syscallid) = __NR_clock_getres_time64;
+
+ asm volatile ("trap 0\n"
+ : "=r" (ret)
+ : "r"(clkid), "r"(ts), "r"(nr)
+ : "memory");
+
+ return ret;
+}
+
+static __always_inline
+int clock_getres32_fallback(clockid_t _clkid, struct old_timespec32 *_ts)
+{
+ register clockid_t clkid asm("a0") = _clkid;
+ register struct old_timespec32 *ts asm("a1") = _ts;
+ register long ret asm("a0");
+ register long nr asm(syscallid) = __NR_clock_getres;
+
+ asm volatile ("trap 0\n"
+ : "=r" (ret)
+ : "r"(clkid), "r"(ts), "r"(nr)
+ : "memory");
+
+ return ret;
+}
+
+uint64_t csky_pmu_read_cc(void);
+static __always_inline u64 __arch_get_hw_counter(s32 clock_mode,
+ const struct vdso_data *vd)
+{
+#ifdef CONFIG_CSKY_PMU_V1
+ return csky_pmu_read_cc();
+#else
+ return 0;
+#endif
+}
+
+static __always_inline const struct vdso_data *__arch_get_vdso_data(void)
+{
+ return _vdso_data;
+}
+
+#endif /* !__ASSEMBLY__ */
+
+#endif /* __ASM_VDSO_CSKY_GETTIMEOFDAY_H */