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proc.h revision 1.15.78.1 
      1 /*	$NetBSD: proc.h,v 1.15.78.1 2010/03/11 15:02:57 yamt 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 #include <sys/user.h> /* for sizeof(struct user) */
     47 
     48 /*
     49  * Machine-dependent parts of the lwp and proc structures for SPARC.
     50  */
     51 struct mdlwp {
     52 	struct	trapframe *md_tf;	/* trap/syscall registers */
     53 	struct	fpstate *md_fpstate;	/* fpu state, if any; always resident */
     54 	struct cpu_info	*md_fpu;	/* Module holding FPU state */
     55 };
     56 
     57 struct mdproc {
     58 	void	(*md_syscall)(register_t, struct trapframe *, register_t);
     59 	u_long	md_flags;
     60 };
     61 
     62 /* md_flags */
     63 #define	MDP_FIXALIGN	0x1		/* Fix unaligned memory accesses */
     64 
     65 
     66 #ifdef _KERNEL
     67 /*
     68  * FPU context switch lock
     69  * Prevent interrupts that grab the kernel lock
     70  * XXX mrg: remove (s) argument
     71  */
     72 extern kmutex_t fpu_mtx;
     73 
     74 #define FPU_LOCK(s)		do {	\
     75 	(void)&(s);			\
     76 	mutex_enter(&fpu_mtx);		\
     77 } while (/* CONSTCOND */ 0)
     78 
     79 #define FPU_UNLOCK(s)		do {	\
     80 	mutex_exit(&fpu_mtx);		\
     81 } while (/* CONSTCOND */ 0)
     82 #endif
     83 
     84 #endif /* _SPARC_PROC_H_ */
     85