bb56f27799
same size. Add some fields that previously overlapped with something else or were missing. - Make struct regs and struct mcontext (minus floating point) the same as struct trapframe so converting between them is easy (null). - Add space for saving floating point state to struct mcontext. This requires that it be 64 byte aligned. - Add assertions that none of these structures change size, as they are part of the ABI. - Remove some dead code in sendsig(). - Save and restore %gsr in struct trapframe. Remember to restore %fsr. - Add some comments to exception.S.
64 lines
2.3 KiB
C
64 lines
2.3 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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* from: FreeBSD: src/sys/alpha/include/ucontext.h,v 1.3 1999/10/08
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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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struct __mcontext {
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uint64_t mc_global[8];
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uint64_t mc_out[8];
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uint64_t mc_local[8];
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uint64_t mc_in[8];
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uint32_t mc_fp[64];
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} __aligned(64);
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typedef struct __mcontext mcontext_t;
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#define mc_flags mc_global[0]
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#define mc_sp mc_out[6]
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#define mc_fprs mc_local[0]
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#define mc_fsr mc_local[1]
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#define mc_gsr mc_local[2]
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#define mc_tnpc mc_in[0]
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#define mc_tpc mc_in[1]
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#define mc_tstate mc_in[2]
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#define mc_y mc_in[4]
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#define _MC_VERSION_SHIFT 0
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#define _MC_VERSION_BITS 32
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#define _MC_VERSION 1L
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#define _MC_FLAGS_SHIFT 32
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#define _MC_FLAGS_BITS 32
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#define _MC_VOLUNTARY ((1L << 0) << _MC_FLAGS_SHIFT)
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#endif /* !_MACHINE_UCONTEXT_H_ */
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