61 lines
2.0 KiB
C
61 lines
2.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2002 Daniel Eischen <deischen@freebsd.org>.
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* Copyright (c) 2005 David Xu <davidxu@freebsd.org>.
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* All rights reserved.
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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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/*
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* Machine-dependent thread prototypes/definitions.
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*/
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#ifndef _PTHREAD_MD_H_
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#define _PTHREAD_MD_H_
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#include <stddef.h>
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#include <sys/types.h>
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#include <machine/tls.h>
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#define CPU_SPINWAIT __asm __volatile("pause")
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/* For use in _Static_assert to check structs will fit in a page */
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#define THR_PAGE_SIZE_MIN PAGE_SIZE
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static __inline struct pthread *
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_get_curthread(void)
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{
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struct pthread *thr;
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__asm __volatile("movl %%gs:%c1, %0" : "=r" (thr)
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: "i" (offsetof(struct tcb, tcb_thread)));
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return (thr);
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}
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static __inline void
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_thr_resolve_machdep(void)
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{
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}
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#endif
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