/* $NetBSD: pcb.h,v 1.17 2012/01/14 17:42:51 reinoud Exp $ */
/*-
* Copyright (c) 2007 Jared D. McNeill <
[email protected]>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 THE FOUNDATION OR CONTRIBUTORS
* 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 _ARCH_USERMODE_INCLUDE_PCB_H
#define _ARCH_USERMODE_INCLUDE_PCB_H
#include <sys/cdefs.h>
#include <sys/ucontext.h>
#include <sys/queue.h>
#define TRAPSTACKSIZE (USPACE -2*sizeof(ucontext_t) - 3*sizeof(register_t))
struct pcb {
ucontext_t pcb_ucp; /* switchframe */
ucontext_t pcb_userret_ucp;
uint8_t *sys_stack_top; /* points at free point in sys_stack */
uint8_t sys_stack[TRAPSTACKSIZE];
void *pcb_onfault; /* on fault handler */
int pcb_errno; /* save/restore place */
};
#endif /* !_ARCH_USERMODE_INCLUDE_PCB_H */
