88 lines
3.5 KiB
C
88 lines
3.5 KiB
C
/*-
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* William Jolitz.
|
|
*
|
|
* 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 the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
|
|
*
|
|
* @(#)pcb.h 5.10 (Berkeley) 5/12/91
|
|
*
|
|
* PATCHES MAGIC LEVEL PATCH THAT GOT US HERE
|
|
* -------------------- ----- ----------------------
|
|
* CURRENT PATCH LEVEL: 1 00154
|
|
* -------------------- ----- ----------------------
|
|
*
|
|
* 20 Apr 93 Bruce Evans New npx-0.5 code
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Intel 386 process control block
|
|
*/
|
|
#include "machine/tss.h"
|
|
#include "machine/npx.h"
|
|
|
|
struct pcb {
|
|
struct i386tss pcb_tss;
|
|
#define pcb_ksp pcb_tss.tss_esp0
|
|
#define pcb_ptd pcb_tss.tss_cr3
|
|
#define pcb_cr3 pcb_ptd
|
|
#define pcb_pc pcb_tss.tss_eip
|
|
#define pcb_psl pcb_tss.tss_eflags
|
|
#define pcb_usp pcb_tss.tss_esp
|
|
#define pcb_fp pcb_tss.tss_ebp
|
|
#ifdef notyet
|
|
u_char pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */
|
|
#endif
|
|
struct save87 pcb_savefpu; /* floating point state for 287/387 */
|
|
struct emcsts pcb_saveemc; /* Cyrix EMC state */
|
|
/*
|
|
* Software pcb (extension)
|
|
*/
|
|
int pcb_flags;
|
|
#ifdef notused
|
|
#define FP_WASUSED 0x01 /* process has used fltng pnt hardware */
|
|
#define FP_NEEDSSAVE 0x02 /* ... that needs save on next context switch */
|
|
#define FP_NEEDSRESTORE 0x04 /* ... that needs restore on next DNA fault */
|
|
#endif
|
|
#define FP_USESEMC 0x08 /* process uses EMC memory-mapped mode */
|
|
#define FM_TRAP 0x10 /* process entered kernel on a trap frame */
|
|
#define FP_SOFTFP 0x20 /* process using software fltng pnt emulator */
|
|
short pcb_iml; /* interrupt mask level */
|
|
caddr_t pcb_onfault; /* copyin/out fault recovery */
|
|
long pcb_sigc[8]; /* XXX signal code trampoline */
|
|
int pcb_cmap2; /* XXX temporary PTE - will prefault instead */
|
|
};
|
|
|
|
#ifdef KERNEL
|
|
struct pcb *curpcb; /* our current running pcb */
|
|
#endif
|