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/* Data for vDSO support. Linux version.
Copyright (C) 2020-2022 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
<https://www.gnu.org/licenses/>. */
/* This file is included in three different modes for both static (libc.a)
and shared (rtld) modes:
1. PROCINFO_DECL is defined, meaning we are only interested in
declarations. For static it requires use the extern keywork along with
the attribute_relro while for shared it will be embedded in the
rtld_global_ro.
2. PROCINFO_DECL and SHARED are not defined. Nothing to do, the default
zero initializion is suffice.
3. PROCINFO_DECL is not defined while SHARED is. Similar to 2., the zero
initialization of rtld_global_ro is suffice. */
#ifndef PROCINFO_CLASS
# define PROCINFO_CLASS
#endif
#ifndef SHARED
# define RELRO attribute_relro
#else
# define RELRO
#endif
#if defined PROCINFO_DECL || !defined SHARED
# ifdef HAVE_CLOCK_GETTIME_VSYSCALL
PROCINFO_CLASS int (*_dl_vdso_clock_gettime) (clockid_t,
struct timespec *) RELRO;
#endif
# ifdef HAVE_CLOCK_GETTIME64_VSYSCALL
PROCINFO_CLASS int (*_dl_vdso_clock_gettime64) (clockid_t,
struct __timespec64 *) RELRO;
#endif
# ifdef HAVE_GETTIMEOFDAY_VSYSCALL
PROCINFO_CLASS int (*_dl_vdso_gettimeofday) (struct timeval *, void *) RELRO;
#endif
# ifdef HAVE_TIME_VSYSCALL
PROCINFO_CLASS time_t (*_dl_vdso_time) (time_t *) RELRO;
# endif
# ifdef HAVE_GETCPU_VSYSCALL
PROCINFO_CLASS int (*_dl_vdso_getcpu) (unsigned *, unsigned *, void *) RELRO;
# endif
# ifdef HAVE_CLOCK_GETRES_VSYSCALL
PROCINFO_CLASS int (*_dl_vdso_clock_getres) (clockid_t,
struct timespec *) RELRO;
# endif
# ifdef HAVE_CLOCK_GETRES64_VSYSCALL
PROCINFO_CLASS int (*_dl_vdso_clock_getres_time64) (clockid_t,
struct __timespec64 *) RELRO;
# endif
/* PowerPC specific ones. */
# ifdef HAVE_GET_TBFREQ
PROCINFO_CLASS uint64_t (*_dl_vdso_get_tbfreq)(void) RELRO;
# endif
#endif
#undef RELRO
#undef PROCINFO_DECL
#undef PROCINFO_CLASS
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