74 lines
3.0 KiB
ArmAsm
74 lines
3.0 KiB
ArmAsm
/* $NetBSD: vrip_spl.S,v 1.1 2011/03/16 13:23:41 tsutsui Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1992, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Digital Equipment Corporation and Ralph Campbell.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* Copyright (C) 1989 Digital Equipment Corporation.
|
|
* Permission to use, copy, modify, and distribute this software and
|
|
* its documentation for any purpose and without fee is hereby granted,
|
|
* provided that the above copyright notice appears in all copies.
|
|
* Digital Equipment Corporation makes no representations about the
|
|
* suitability of this software for any purpose. It is provided "as is"
|
|
* without express or implied warranty.
|
|
*
|
|
* from: Header: /sprite/src/kernel/mach/ds3100.md/RCS/loMem.s,
|
|
* v 1.1 89/07/11 17:55:04 nelson Exp SPRITE (DECWRL)
|
|
* from: Header: /sprite/src/kernel/mach/ds3100.md/RCS/machAsm.s,
|
|
* v 9.2 90/01/29 18:00:39 shirriff Exp SPRITE (DECWRL)
|
|
* from: Header: /sprite/src/kernel/vm/ds3100.md/vmPmaxAsm.s,
|
|
* v 1.1 89/07/10 14:27:41 nelson Exp SPRITE (DECWRL)
|
|
*
|
|
* @(#)locore.s 8.5 (Berkeley) 1/4/94
|
|
*/
|
|
|
|
#include <mips/asm.h>
|
|
#include <mips/cpuregs.h>
|
|
|
|
.set noreorder
|
|
|
|
#define VR_INT_MASK_PIU MIPS_INT_MASK_0
|
|
|
|
/*
|
|
* void vrip_splpiu(void)
|
|
* disable all interrupts except PIU interrupt
|
|
*/
|
|
LEAF_NOPROFILE(vrip_splpiu)
|
|
mfc0 v0, MIPS_COP_0_STATUS # fetch status register
|
|
li v1, ~MIPS_INT_MASK
|
|
and v1, v0, v1 # turn off INT bit
|
|
li v0, VR_INT_MASK_PIU
|
|
or v0, v0, v1 # enable only PIU interrupt
|
|
mtc0 v0, MIPS_COP_0_STATUS # store back
|
|
COP0_SYNC
|
|
j ra
|
|
nop
|
|
END(vrip_splpiu)
|