76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/* $NetBSD: proc.h,v 1.12 2003/01/17 22:11:16 thorpej Exp $ */
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/*
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* Copyright (c) 1994, 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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#ifndef _ALPHA_PROC_H
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#define _ALPHA_PROC_H
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#include <machine/frame.h>
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/*
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* Machine-dependent part of the lwp struct for the Alpha.
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*/
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struct mdlwp {
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u_long md_flags;
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struct trapframe *md_tf; /* trap/syscall registers */
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struct pcb *md_pcbpaddr; /* phys addr of the pcb */
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};
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/*
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* md_flags usage
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* --------------
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* MDP_FPUSED
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* A largely unused bit indicating the presence of FPU history.
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* Cleared on exec. Set but not used by the fpu context switcher
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* itself.
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*
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* MDP_FP_C
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* The architected FP Control word. It should forever begin at bit 1,
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* as the bits are AARM specified and this way it doesn't need to be
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* shifted.
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*
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* Until C99 there was never an IEEE 754 API, making most of the
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* standard useless. Because of overlapping AARM, OSF/1, NetBSD, and
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* C99 API's, the use of the MDP_FP_C bits is defined variously in
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* ieeefp.h and fpu.h.
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*/
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#define MDP_FPUSED 0x00000001 /* Process used the FPU */
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#define MDP_FP_C 0x007ffffe /* Extended FP_C Quadword bits */
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/*
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* Machine-dependent part of the proc struct for the Alpha.
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*/
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struct lwp;
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struct mdproc {
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/* this process's syscall vector */
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void (*md_syscall)(struct lwp *, u_int64_t, struct trapframe *);
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__volatile int md_astpending; /* AST pending for this process */
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};
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#endif /* !_ALPHA_PROC_H_ */
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