arch/arm64/kernel/vdso32/vgettimeofday.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * ARM64 compat userspace implementations of gettimeofday() and similar.
   4  *
   5  * Copyright (C) 2018 ARM Limited
   6  *
   7  */
   8 #include <linux/time.h>
   9 #include <linux/types.h>
  10
  11 int __vdso_clock_gettime(clockid_t clock,
  12                          struct old_timespec32 *ts)
  13 {
  14         /* The checks below are required for ABI consistency with arm */
  15         if ((u32)ts >= TASK_SIZE_32)
  16                 return -EFAULT;
  17
  18         return __cvdso_clock_gettime32(clock, ts);
  19 }
  20
  21 int __vdso_clock_gettime64(clockid_t clock,
  22                            struct __kernel_timespec *ts)
  23 {
  24         /* The checks below are required for ABI consistency with arm */
  25         if ((u32)ts >= TASK_SIZE_32)
  26                 return -EFAULT;
  27
  28         return __cvdso_clock_gettime(clock, ts);
  29 }
  30
  31 int __vdso_gettimeofday(struct __kernel_old_timeval *tv,
  32                         struct timezone *tz)
  33 {
  34         return __cvdso_gettimeofday(tv, tz);
  35 }
  36
  37 int __vdso_clock_getres(clockid_t clock_id,
  38                         struct old_timespec32 *res)
  39 {
  40         /* The checks below are required for ABI consistency with arm */
  41         if ((u32)res >= TASK_SIZE_32)
  42                 return -EFAULT;
  43
  44         return __cvdso_clock_getres_time32(clock_id, res);
  45 }
  46
  47 /* Avoid unresolved references emitted by GCC */
  48
  49 void __aeabi_unwind_cpp_pr0(void)
  50 {
  51 }
  52
  53 void __aeabi_unwind_cpp_pr1(void)
  54 {
  55 }
  56
  57 void __aeabi_unwind_cpp_pr2(void)
  58 {
  59 }