machpcb.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1990 by Sun Microsystems, Inc.
*/
#ifndef _SYS_MACHPCB_H
#define _SYS_MACHPCB_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/privregs.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* This file is machine dependent.
*/
/*
* Machine dependent per-thread data.
*/
/*
* The system actually supports one more than the above number.
* There is always one window reserved for trap handlers that
* never has to be saved into the pcb struct.
*/
/*
* Distance from beginning of thread stack (t_stk) to saved regs struct.
*/
#ifndef _ASM
/*
* The struct machpcb is always allocated stack aligned.
*/
typedef struct machpcb {
char mpcb_frame[REGOFF];
int mpcb_uwm; /* user window mask */
int mpcb_wbcnt; /* number of saved windows in pcb_wbuf */
int mpcb_flags; /* various state flags */
int mpcb_wocnt; /* window overflow count */
int mpcb_wucnt; /* window underflow count */
} machpcb_t;
#endif /* ! _ASM */
/* mpcb_flags */
/*
* We can use lwp_regs to find the mpcb base.
*/
#ifndef _ASM
#endif
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MACHPCB_H */