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 #if defined(__x86_64__) || defined(CONFIG_COMPAT_32BIT_TIME) 19 int __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz) 20 { 21 return __cvdso_gettimeofday(tv, tz); 22 } 23 24 int gettimeofday(struct __kernel_old_timeval *, struct timezone *) 25 __attribute__((weak, alias("__vdso_gettimeofday"))); 26 27 __kernel_old_time_t __vdso_time(__kernel_old_time_t *t) 28 { 29 return __cvdso_time(t); 30 } 31 32 __kernel_old_time_t time(__kernel_old_time_t *t) __attribute__((weak, alias("__vdso_time"))); 33 #endif /* CONFIG_COMPAT_32BIT_TIME */ 34 35 36 #if defined(CONFIG_X86_64) && !defined(BUILD_VDSO32_64) 37 /* both 64-bit and x32 use these */ 38 int __vdso_clock_gettime(clockid_t clock, struct __kernel_timespec *ts) 39 { 40 return __cvdso_clock_gettime(clock, ts); 41 } 42 43 int clock_gettime(clockid_t, struct __kernel_timespec *) 44 __attribute__((weak, alias("__vdso_clock_gettime"))); 45 46 int __vdso_clock_getres(clockid_t clock, 47 struct __kernel_timespec *res) 48 { 49 return __cvdso_clock_getres(clock, res); 50 } 51 int clock_getres(clockid_t, struct __kernel_timespec *) 52 __attribute__((weak, alias("__vdso_clock_getres"))); 53 54 #else 55 /* i386 only */ 56 #ifdef CONFIG_COMPAT_32BIT_TIME 57 int __vdso_clock_gettime(clockid_t clock, struct old_timespec32 *ts) 58 { 59 return __cvdso_clock_gettime32(clock, ts); 60 } 61 62 int clock_gettime(clockid_t, struct old_timespec32 *) 63 __attribute__((weak, alias("__vdso_clock_gettime"))); 64 65 int __vdso_clock_getres(clockid_t clock, struct old_timespec32 *res) 66 { 67 return __cvdso_clock_getres_time32(clock, res); 68 } 69 70 int clock_getres(clockid_t, struct old_timespec32 *) 71 __attribute__((weak, alias("__vdso_clock_getres"))); 72 #endif /* CONFIG_COMPAT_32BIT_TIME */ 73 74 int __vdso_clock_gettime64(clockid_t clock, struct __kernel_timespec *ts) 75 { 76 return __cvdso_clock_gettime(clock, ts); 77 } 78 79 int clock_gettime64(clockid_t, struct __kernel_timespec *) 80 __attribute__((weak, alias("__vdso_clock_gettime64"))); 81 82 int __vdso_clock_getres_time64(clockid_t clock, struct __kernel_timespec *ts) 83 { 84 return __cvdso_clock_getres(clock, ts); 85 } 86 87 int clock_getres_time64(clockid_t, struct __kernel_timespec *) 88 __attribute__((weak, alias("__vdso_clock_getres_time64"))); 89 #endif 90