1/*	$NetBSD: proc.h,v 1.20 2020/12/06 02:23:12 christos Exp $ */
2
3/*
4 * Copyright (c) 1992, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This software was developed by the Computer Systems Engineering group
8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
9 * contributed to Berkeley.
10 *
11 * All advertising materials mentioning features or use of this software
12 * must display the following acknowledgement:
13 *	This product includes software developed by the University of
14 *	California, Lawrence Berkeley Laboratory.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
18 * are met:
19 * 1. Redistributions of source code must retain the above copyright
20 *    notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 *    notice, this list of conditions and the following disclaimer in the
23 *    documentation and/or other materials provided with the distribution.
24 * 3. Neither the name of the University nor the names of its contributors
25 *    may be used to endorse or promote products derived from this software
26 *    without specific prior written permission.
27 *
28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
31 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
38 * SUCH DAMAGE.
39 *
40 *	@(#)proc.h	8.1 (Berkeley) 6/11/93
41 */
42
43#ifndef _SPARC_PROC_H_
44#define _SPARC_PROC_H_
45
46/*
47 * Machine-dependent parts of the lwp and proc structures for SPARC.
48 */
49struct mdlwp {
50	struct	trapframe *md_tf;	/* trap/syscall registers */
51	struct	fpstate *md_fpstate;	/* fpu state, if any; always resident */
52	struct cpu_info	*md_fpu;	/* Module holding FPU state */
53};
54
55struct mdproc {
56	void	(*md_syscall)(__register_t, struct trapframe *, __register_t);
57	u_long	md_flags;
58};
59
60/* md_flags */
61#define	MDP_FIXALIGN	0x1		/* Fix unaligned memory accesses */
62
63
64#ifdef _KERNEL
65/*
66 * FPU context switch lock
67 * Prevent interrupts that grab the kernel lock
68 * XXX mrg: remove (s) argument
69 */
70extern kmutex_t fpu_mtx;
71
72#define FPU_LOCK(s)		do {	\
73	(void)&(s);			\
74	mutex_enter(&fpu_mtx);		\
75} while (/* CONSTCOND */ 0)
76
77#define FPU_UNLOCK(s)		do {	\
78	mutex_exit(&fpu_mtx);		\
79} while (/* CONSTCOND */ 0)
80#endif
81
82#endif /* _SPARC_PROC_H_ */
83