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| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/aarch64/gettimeofday.c | 71 |
2 files changed, 76 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index ad08fe932a..87f7a9c867 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2018-06-14 Steve Ellcey <sellcey@caviumnetworks.com> + Szabolcs Nagy <szabolcs.nagy@arm.com> + + * sysdeps/unix/sysv/linux/aarch64/gettimeofday.c: New file. + 2018-06-14 Florian Weimer <fweimer@redhat.com> * scripts/update-abilist.sh: Accept empty list of files to patch. diff --git a/sysdeps/unix/sysv/linux/aarch64/gettimeofday.c b/sysdeps/unix/sysv/linux/aarch64/gettimeofday.c new file mode 100644 index 0000000000..8ff83e4e7d --- /dev/null +++ b/sysdeps/unix/sysv/linux/aarch64/gettimeofday.c @@ -0,0 +1,71 @@ +/* Copyright (C) 2018 Free Software Foundation, Inc. + + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +/* Get the current time of day and timezone information, + putting it into *tv and *tz. If tz is null, *tz is not filled. + Returns 0 on success, -1 on errors. */ + +#ifdef SHARED + +# define __gettimeofday __redirect___gettimeofday +# include <sys/time.h> +# undef __gettimeofday +# define HAVE_VSYSCALL +# include <dl-vdso.h> +# include <sysdep-vdso.h> + +/* Used as a fallback in the ifunc resolver if VDSO is not available + and for libc.so internal __gettimeofday calls. */ + +static int +__gettimeofday_vsyscall (struct timeval *tv, struct timezone *tz) +{ + return INLINE_VSYSCALL (gettimeofday, 2, tv, tz); +} + +/* PREPARE_VERSION will need an __LP64__ ifdef when ILP32 support + goes in. See _libc_vdso_platform_setup in + sysdeps/unix/sysv/linux/aarch64/init-first.c. */ + +# undef INIT_ARCH +# define INIT_ARCH() \ + PREPARE_VERSION (linux_version, "LINUX_2.6.39", 123718537); \ + void *vdso_gettimeofday = \ + _dl_vdso_vsym ("__kernel_gettimeofday", &linux_version); + +libc_ifunc_hidden (__redirect___gettimeofday, __gettimeofday, + vdso_gettimeofday ?: (void *) __gettimeofday_vsyscall) + +__hidden_ver1 (__gettimeofday_vsyscall, __GI___gettimeofday, + __gettimeofday_vsyscall); + +#else + +# include <sys/time.h> +# include <sysdep.h> +int +__gettimeofday (struct timeval *tv, struct timezone *tz) +{ + return INLINE_SYSCALL (gettimeofday, 2, tv, tz); +} +libc_hidden_def (__gettimeofday) + +#endif + +weak_alias (__gettimeofday, gettimeofday) +libc_hidden_weak (gettimeofday) |