arch/powerpc/kernel/vdso32/gettimeofday.S

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Userland implementation of gettimeofday() for 32 bits processes in a
   4  * ppc64 kernel for use in the vDSO
   5  *
   6  * Copyright (C) 2004 Benjamin Herrenschmuidt (benh@kernel.crashing.org,
   7  *                    IBM Corp.
   8  */
   9 #include <asm/processor.h>
  10 #include <asm/ppc_asm.h>
  11 #include <asm/vdso.h>
  12 #include <asm/vdso_datapage.h>
  13 #include <asm/asm-offsets.h>
  14 #include <asm/unistd.h>
  15 #include <asm/vdso/gettimeofday.h>
  16
  17         .text
  18 /*
  19  * Exact prototype of gettimeofday
  20  *
  21  * int __kernel_gettimeofday(struct timeval *tv, struct timezone *tz);
  22  *
  23  */
  24 V_FUNCTION_BEGIN(__kernel_gettimeofday)
  25         cvdso_call __c_kernel_gettimeofday
  26 V_FUNCTION_END(__kernel_gettimeofday)
  27
  28 /*
  29  * Exact prototype of clock_gettime()
  30  *
  31  * int __kernel_clock_gettime(clockid_t clock_id, struct timespec *tp);
  32  *
  33  */
  34 V_FUNCTION_BEGIN(__kernel_clock_gettime)
  35         cvdso_call __c_kernel_clock_gettime
  36 V_FUNCTION_END(__kernel_clock_gettime)
  37
  38 /*
  39  * Exact prototype of clock_gettime64()
  40  *
  41  * int __kernel_clock_gettime64(clockid_t clock_id, struct __timespec64 *ts);
  42  *
  43  */
  44 V_FUNCTION_BEGIN(__kernel_clock_gettime64)
  45         cvdso_call __c_kernel_clock_gettime64
  46 V_FUNCTION_END(__kernel_clock_gettime64)
  47
  48 /*
  49  * Exact prototype of clock_getres()
  50  *
  51  * int __kernel_clock_getres(clockid_t clock_id, struct timespec *res);
  52  *
  53  */
  54 V_FUNCTION_BEGIN(__kernel_clock_getres)
  55         cvdso_call __c_kernel_clock_getres
  56 V_FUNCTION_END(__kernel_clock_getres)
  57
  58
  59 /*
  60  * Exact prototype of time()
  61  *
  62  * time_t time(time *t);
  63  *
  64  */
  65 V_FUNCTION_BEGIN(__kernel_time)
  66         cvdso_call_time __c_kernel_time
  67 V_FUNCTION_END(__kernel_time)