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f534255e4d
This patch consolidate the Linux vDSO define and usage across all ports
that uses it. The common vDSO definitions and calling through
{INLINE/INTERNAL}_VSYSCALL macros are moved to a common header
sysdep-vdso.h and vDSO name declaration and prototype is defined
using a common macro.
Also PTR_{MANGLE,DEMANGLE} is added to ports that does not use them
for vDSO calls (aarch64, powerpc, s390, and tile) and thus it will
reflect in code changes. For ports that already implement pointer
mangling/demangling in vDSO system (i386, x32, x86_64) this patch
is mainly a code refactor.
Checked on x32, x86_64, x32, ppc64le, and aarch64.
48 lines
1.6 KiB
C
48 lines
1.6 KiB
C
/* clock_gettime -- Get current time from a POSIX clockid_t. Linux version.
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Copyright (C) 2003-2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <errno.h>
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#include <time.h>
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#include "kernel-posix-cpu-timers.h"
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#ifdef HAVE_CLOCK_GETTIME_VSYSCALL
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# define HAVE_VSYSCALL
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#endif
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#include <sysdep-vdso.h>
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/* The REALTIME and MONOTONIC clock are definitely supported in the
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kernel. */
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#define SYSDEP_GETTIME \
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SYSDEP_GETTIME_CPUTIME; \
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case CLOCK_REALTIME: \
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case CLOCK_MONOTONIC: \
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retval = INLINE_VSYSCALL (clock_gettime, 2, clock_id, tp); \
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break
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/* We handled the REALTIME clock here. */
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#define HANDLED_REALTIME 1
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#define HANDLED_CPUTIME 1
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#define SYSDEP_GETTIME_CPU(clock_id, tp) \
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retval = INLINE_VSYSCALL (clock_gettime, 2, clock_id, tp); \
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break
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#define SYSDEP_GETTIME_CPUTIME /* Default catches them too. */
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#include <sysdeps/unix/clock_gettime.c>
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