1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Fast user context implementation of clock_gettime, gettimeofday, and time. 4 * 5 * Copyright 2006 Andi Kleen, SUSE Labs. 6 * Copyright 2019 ARM Limited 7 * 8 * 32 Bit compat layer by Stefani Seibold <stefani@seibold.net> 9 * sponsored by Rohde & Schwarz GmbH & Co. KG Munich/Germany 10 */ 11 #include <linux/time.h> 12 #include <linux/kernel.h> 13 #include <linux/types.h> 14 #include <vdso/gettime.h> 15 16 #include "../../../../lib/vdso/gettimeofday.c" 17 18 int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz) 19 { 20 return __cvdso_gettimeofday(tv, tz); 21 } 22 23 int gettimeofday(struct __kernel_old_timeval *, struct timezone *) 24 __attribute__((weak, alias("__vdso_gettimeofday"))); 25 26 __kernel_old_time_t __vdso_time(__kernel_old_time_t *t) 27 { 28 return __cvdso_time(t); 29 } 30 31 __kernel_old_time_t time(__kernel_old_time_t *t) __attribute__((weak, alias("__vdso_time"))); 32 33 34 #if defined(CONFIG_X86_64) && !defined(BUILD_VDSO32_64) 35 /* both 64-bit and x32 use these */ 36 int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts) 37 { 38 return __cvdso_clock_gettime(clock, ts); 39 } 40 41 int clock_gettime(clockid_t, struct __kernel_timespec *) 42 __attribute__((weak, alias("__vdso_clock_gettime"))); 43 44 int __vdso_clock_getres(clockid_t clock, 45 struct __kernel_timespec *res) 46 { 47 return __cvdso_clock_getres(clock, res); 48 } 49 int clock_getres(clockid_t, struct __kernel_timespec *) 50 __attribute__((weak, alias("__vdso_clock_getres"))); 51 52 #else 53 /* i386 only */ 54 int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts) 55 { 56 return __cvdso_clock_gettime32(clock, ts); 57 } 58 59 int clock_gettime(clockid_t, struct old_timespec32 *) 60 __attribute__((weak, alias("__vdso_clock_gettime"))); 61 62 int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts) 63 { 64 return __cvdso_clock_gettime(clock, ts); 65 } 66 67 int clock_gettime64(clockid_t, struct __kernel_timespec *) 68 __attribute__((weak, alias("__vdso_clock_gettime64"))); 69 70 int __vdso_clock_getres(clockid_t clock, struct old_timespec32 *res) 71 { 72 return __cvdso_clock_getres_time32(clock, res); 73 } 74 75 int clock_getres(clockid_t, struct old_timespec32 *) 76 __attribute__((weak, alias("__vdso_clock_getres"))); 77 #endif 78