/* $Id: pcb.h,v 1.1.1.1 1998/03/09 05:43:16 jb Exp $ */ /* From: NetBSD: pcb.h,v 1.6 1997/04/06 08:47:33 cgd Exp */ /* * Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University. * All rights reserved. * * Author: Chris G. Demetriou * * 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 the * rights to redistribute these changes. */ #include #include #include /* * PCB: process control block * * In this case, the hardware structure that is the defining element * for a process, and the additional state that must be saved by software * on a context switch. Fields marked [HW] are mandated by hardware; fields * marked [SW] are for the software. * * It's said in the VMS PALcode section of the AARM that the pcb address * passed to the swpctx PALcode call has to be a physical address. Not * knowing this (and trying a virtual) address proved this correct. * So we cache the physical address of the pcb in the md_proc struct. */ struct pcb { struct alpha_pcb pcb_hw; /* PALcode defined */ unsigned long pcb_context[9]; /* s[0-6], ra, ps [SW] */ struct fpreg pcb_fp; /* FP registers [SW] */ u_int64_t pcb_fp_control; /* IEEE control word [SW] */ unsigned long pcb_onfault; /* for copy faults [SW] */ unsigned long pcb_accessaddr; /* for [fs]uswintr [SW] */ }; /* * The pcb is augmented with machine-dependent additional data for * core dumps. For the Alpha, that's a trap frame and the floating * point registers. */ struct md_coredump { struct trapframe md_tf; struct fpreg md_fpstate; };