55 lines
2.2 KiB
C
55 lines
2.2 KiB
C
/*-
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* Copyright (c) 2002 Daniel Eischen <deischen@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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* $FreeBSD$
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*/
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/*
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* Machine-dependent thread prototypes/definitions for the thread kernel.
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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 <setjmp.h>
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#include <ucontext.h>
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extern int _thr_setcontext(ucontext_t *);
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extern int _thr_getcontext(ucontext_t *);
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/*
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* These are needed to ensure an application doesn't attempt to jump
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* between stacks of different threads. They return the stack of
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* jmp_buf, sigjmp_buf, and ucontext respectively.
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*/
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#define GET_STACK_JB(jb) ((unsigned long)((jb)[0]._jb[2]))
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#define GET_STACK_SJB(sjb) ((unsigned long)((sjb)[0]._sjb[2]))
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#define GET_STACK_UC(ucp) ((unsigned long)((ucp)->uc_mcontext.mc_esp))
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#define THR_GETCONTEXT(ucp) _thr_getcontext(ucp)
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#define THR_SETCONTEXT(ucp) _thr_setcontext(ucp)
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#define THR_ALIGNBYTES 15
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#define THR_ALIGN(td) (((unsigned)(td) + THR_ALIGNBYTES) & ~THR_ALIGNBYTES)
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#endif
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