cfa1a71c96
is only read and written by set_mcontext() and get_mcontext() for use by threading libraries.
70 lines
2.6 KiB
C
70 lines
2.6 KiB
C
/*-
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* Copyright (c) 1999 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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* 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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* in this position and unchanged.
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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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 _MACHINE_UCONTEXT_H_
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#define _MACHINE_UCONTEXT_H_
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typedef struct __mcontext {
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/*
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* These fields must match the definition
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* of struct sigcontext. That way we can support
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* struct sigcontext and ucontext_t at the same
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* time.
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*/
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long mc_onstack; /* XXX - sigcontext compat. */
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unsigned long mc_regs[37];
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unsigned long mc_fpregs[32];
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unsigned long mc_fpcr;
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unsigned long mc_fp_control;
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#define _MC_FPOWNED_NONE 0 /* FP state not used */
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#define _MC_FPOWNED_FPU 1 /* FP state came from FPU */
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#define _MC_FPOWNED_PCB 2 /* FP state came from PCB */
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long mc_ownedfp;
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#define _MC_REV0_SIGFRAME 1 /* context is a signal frame */
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#define _MC_REV0_TRAPFRAME 2 /* context is a trap frame */
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long mc_format;
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long mc_thrptr; /* Thread pointer */
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long mc_spare[5];
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} mcontext_t;
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#if defined(_KERNEL) && defined(COMPAT_FREEBSD4)
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struct mcontext4 {
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long mc_onstack; /* XXX - sigcontext compat. */
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unsigned long mc_regs[37];
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unsigned long mc_fpregs[32];
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unsigned long mc_fpcr;
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unsigned long mc_fp_control;
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long mc_ownedfp;
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long __spare__[7];
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};
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#endif
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#endif /* !_MACHINE_UCONTEXT_H_ */
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