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/* $OpenBSD: frame.h,v 1.5 2020/07/13 22:37:37 kettenis Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _MACHDEP_FRAME_H
#define _MACHDEP_FRAME_H
/*
* We have to save all registers on every trap, because
* 1. user could attach this process every time
* 2. we must be able to restore all user registers in case of fork
* Actually, we do not save the fp registers on trap, since
* these are not used by the kernel. They are saved only when switching
* between processes using the FPU.
*
*/
struct trapframe {
__register_t fixreg[32];
__register_t lr;
__register_t cr;
__register_t xer;
__register_t ctr;
__register_t srr0;
__register_t srr1;
__register_t vrsave;
__register_t dar; /* dar & dsisr are only filled on a DSI trap */
__register_t dsisr;
__register_t exc;
};
/*
* This is to ensure alignment of the stackpointer
*/
#define FRAMELEN roundup(sizeof(struct trapframe) + 32, 16)
struct callframe {
register_t cf_sp;
register_t cf_cr;
register_t cf_lr;
register_t cf_toc;
};
struct sigframe {
int sf_signum;
siginfo_t *sf_sip;
struct sigcontext sf_sc;
siginfo_t sf_si;
};
struct switchframe {
register_t sf_sp;
register_t sf_cr;
register_t sf_lr; /* unused */
register_t sf_toc; /* unused */
register_t sf_r14;
register_t sf_r15;
register_t sf_r16;
register_t sf_r17;
register_t sf_r18;
register_t sf_r19;
register_t sf_r20;
register_t sf_r21;
register_t sf_r22;
register_t sf_r23;
register_t sf_r24;
register_t sf_r25;
register_t sf_r26;
register_t sf_r27;
register_t sf_r28;
register_t sf_r29;
register_t sf_r30;
register_t sf_r31;
};
#endif /* _MACHDEP_FRAME_H_ */
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