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pcb.h revision 1.16 
      1 /*	$NetBSD: pcb.h,v 1.16 2022/12/11 18:02:40 oster Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994 Ludd, University of Lule}, Sweden.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     26  */
     27 
     28  /* All bugs are subject to removal without further notice */
     29 
     30 #ifndef _VAX_PCB_H_
     31 #define _VAX_PCB_H_
     32 
     33 #include <machine/trap.h>
     34 
     35 struct pcb {
     36 
     37   	/* Hardware registers, based on VAX special instructions */
     38 
     39 	long	KSP;		/*  Kernel Stack Pointer      */
     40 	long	ESP;		/*  Executive Stack Pointer   */
     41 	long	SSP;		/*  Supervisor Stack Pointer  */
     42 	long	USP;		/*  User Stack Pointer        */
     43 	long	R[12];		/*  Register 0-11             */
     44 	long	AP;		/*  Argument Pointer          */
     45 	long	FP;		/*  Frame Pointer             */
     46 	long	PC;		/*  Program Counter           */
     47 	long	PSL;		/*  Program Status Longword   */
     48 	struct	pte *P0BR;	/*  Page 0 Base Register      */
     49 	long	P0LR;		/*  Page 0 Length Register    */
     50 	struct	pte *P1BR;	/*  Page 1 Base Register      */
     51 	long	P1LR;		/*  Page 1 Length Register    */
     52 	long	ASN;		/*  Address space number      */
     53 
     54 	/* Software registers, only used by kernel software */
     55 	void   *pcb_onfault;	/* Tells whether fault copy */
     56 	paddr_t pcb_paddr;	/* physical address of PCB */
     57 	struct pmap *pcb_pm;	/* owning pmap */
     58 	struct pcb *pcb_pmnext;	/* next pcb that shares this pmap */
     59 };
     60 
     61 #define	AST_MASK 0x07000000
     62 #define	AST_PCB	 0x04000000	/* disable AST */
     63 #define	AST_ON	 0x03000000	/* request AST */
     64 
     65 /* machine-specific core dump; save trapframe */
     66 struct	md_coredump {
     67 	struct trapframe md_tf;
     68 };
     69 
     70 #endif /* _VAX_PCB_H_ */
     71 
     72