83 lines
2.2 KiB
C
83 lines
2.2 KiB
C
/*
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* Copyright (c) 2003 Marcel Moolenaar
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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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*
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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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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#define CPU_SPINWAIT
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#define HAS__UMTX_OP_ERR 1
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#define DTV_OFFSET offsetof(struct tcb, tcb_dtv)
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/*
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* Variant I tcb. The structure layout is fixed, don't blindly
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* change it!
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*/
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struct tcb {
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void *tcb_dtv;
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struct pthread *tcb_thread;
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};
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/*
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* The tcb constructors.
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*/
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struct tcb *_tcb_ctor(struct pthread *, int);
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void _tcb_dtor(struct tcb *);
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/* Called from the thread to set its private data. */
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static __inline void
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_tcb_set(struct tcb *tcb)
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{
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register struct tcb *tp __asm("%r13");
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__asm __volatile("mov %0 = %1;;" : "=r"(tp) : "r"(tcb));
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}
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static __inline struct tcb *
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_tcb_get(void)
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{
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register struct tcb *tp __asm("%r13");
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return (tp);
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}
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extern struct pthread *_thr_initial;
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static __inline struct pthread *
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_get_curthread(void)
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{
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if (_thr_initial)
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return (_tcb_get()->tcb_thread);
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return (NULL);
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}
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#endif /* _PTHREAD_MD_H_ */
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