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- /*
- * Mach Operating System
- * Copyright (c) 1992 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
- /*
- * HISTORY
- * $Log: pcb.h,v $
- * Revision 2.2 92/05/25 14:42:46 rwd
- * Added for comptability for ptrace.
- * [92/05/23 rwd]
- *
- *
- */
-
- /*-
- * 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
- */
-
- /*
- * 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;
- #define FP_WASUSED 0x01 /* floating point has been used in this proc */
- #define FP_NEEDSSAVE 0x02 /* needs save on next context switch */
- #define FP_NEEDSRESTORE 0x04 /* need restore on next DNA fault */
- #define FP_USESEMC 0x08 /* process uses EMC memory-mapped mode */
- #define FM_TRAP 0x10 /* process entered kernel on a trap frame */
- 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
-