mirror of
https://github.com/freebsd/freebsd-src
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0d6cc87b18
Reviewed by: kib, emaste, imp Pull Request: https://github.com/freebsd/freebsd-src/pull/908
66 lines
2.1 KiB
C
66 lines
2.1 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2020 Brandon Bergren <bdragon@FreeBSD.org>
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*
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* This software was developed by Konstantin Belousov
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/types.h>
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#include <sys/elf.h>
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#include <sys/time.h>
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#include <sys/vdso.h>
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#include <machine/cpufunc.h>
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#include <machine/spr.h>
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#include <errno.h>
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#include "libc_private.h"
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#pragma weak __vdso_gettc
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int
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__vdso_gettc(const struct vdso_timehands *th, u_int *tc)
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{
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if (__predict_false(th->th_algo != VDSO_TH_ALGO_PPC_TB))
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return (ENOSYS);
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/*
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* While the timebase is a 64 bit quantity, we are only interested
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* in the lower 32 bits of it.
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*/
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*tc = mfspr(TBR_TBL);
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return (0);
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}
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#pragma weak __vdso_gettimekeep
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int
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__vdso_gettimekeep(struct vdso_timekeep **tk)
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{
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return (_elf_aux_info(AT_TIMEKEEP, tk, sizeof(*tk)));
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}
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