sys/arch/sparc/include/proc.h

   1 /*      $NetBSD: proc.h,v 1.15 2005/12/11 12:19:06 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 #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 /*
  67  * FPU context switch lock
  68  * Prevent interrupts that grab the kernel lock
  69  */
  70 extern struct simplelock        fpulock;
  71
  72 #define FPU_LOCK(s)             do {    \
  73         s = splclock();                 \
  74         simple_lock(&fpulock);          \
  75 } while (/* CONSTCOND */ 0)
  76
  77 #define FPU_UNLOCK(s)           do {    \
  78         simple_unlock(&fpulock);        \
  79         splx(s);                        \
  80 } while (/* CONSTCOND */ 0)
  81
  82 #endif /* _SPARC_PROC_H_ */