0ef7fc1c4a
and save/restore during a context switch. The USER_SR could be overwritten when the current thread was switched out with a faulting copyin/copyout. Approved by: Benno
71 lines
2.7 KiB
C
71 lines
2.7 KiB
C
/*-
|
|
* 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.
|
|
*
|
|
* $NetBSD: pcb.h,v 1.4 2000/06/04 11:57:17 tsubai Exp $
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_PCB_H_
|
|
#define _MACHINE_PCB_H_
|
|
|
|
typedef int faultbuf[23];
|
|
|
|
struct pcb {
|
|
register_t pcb_context[20]; /* non-volatile r14-r31 */
|
|
register_t pcb_cr; /* Condition register */
|
|
register_t pcb_sp; /* stack pointer */
|
|
register_t pcb_lr; /* link register */
|
|
register_t pcb_usr; /* USER_SR segment register */
|
|
struct pmap *pcb_pm; /* pmap of our vmspace */
|
|
struct pmap *pcb_pmreal; /* real address of above */
|
|
faultbuf *pcb_onfault; /* For use during
|
|
copyin/copyout */
|
|
int pcb_flags;
|
|
#define PCB_FPU 1 /* Process had FPU initialized */
|
|
struct fpu {
|
|
double fpr[32];
|
|
double fpscr; /* FPSCR stored as double for easier access */
|
|
} pcb_fpu; /* Floating point processor */
|
|
unsigned int pcb_fpcpu; /* which CPU had our FPU
|
|
stuff. */
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#ifndef curpcb
|
|
extern struct pcb *curpcb;
|
|
#endif
|
|
|
|
extern struct pmap *curpm;
|
|
extern struct proc *fpuproc;
|
|
|
|
#endif
|
|
#endif /* _MACHINE_PCB_H_ */
|