58 lines
2.2 KiB
C
58 lines
2.2 KiB
C
/*-
|
|
* Copyright (c) 2001 Jake Burkholder.
|
|
* 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 AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_PCB_H_
|
|
#define _MACHINE_PCB_H_
|
|
|
|
#include <machine/frame.h>
|
|
|
|
#define MAXWIN 8
|
|
|
|
#define PCB_FEF (1 << 0)
|
|
|
|
/* NOTE: pcb_ufp must be aligned on a 64 byte boundary. */
|
|
struct pcb {
|
|
struct rwindow pcb_rw[MAXWIN]; /* wbuf for page faults during spill / fill trap handling */
|
|
uint32_t pcb_kfp[64]; /* used for regs in handling kernel floating point exc */
|
|
uint32_t pcb_ufp[64]; /* used for regs in handling user floating point exc */
|
|
uint64_t pcb_rwsp[MAXWIN]; /* spbuf sp's for each wbuf */
|
|
uint64_t pcb_flags;
|
|
uint64_t pcb_nsaved; /* number of windows saved in pcb_rw */
|
|
uint64_t pcb_pc;
|
|
uint64_t pcb_sp;
|
|
uint64_t pcb_kstack; /* pcb's kernel stack */
|
|
uint64_t pcb_pad[4];
|
|
} __aligned(64);
|
|
|
|
#ifdef _KERNEL
|
|
void makectx(struct trapframe *, struct pcb *);
|
|
int savectx(struct pcb *pcb);
|
|
#endif
|
|
|
|
#endif /* !_MACHINE_PCB_H_ */
|