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/* $NetBSD: setcpsr.S,v 1.1 1996/01/31 23:18:27 mark Exp $ */
/*
* Copyright (c) 1994 Mark Brinicombe.
* Copyright (c) 1994 Brini.
* All rights reserved.
*
* This code is derived from software written for Brini by Mark Brinicombe
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Brini.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI 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.
*
* RiscBSD kernel project
*
* setcpsr.S
*
* Miscellaneous routines to play with the CPSR register
*
* Eventually this routine can be inline assembly.
*
* Created : 12/09/94
* Last updated : 28/05/95
*
* Based of kate/display/setcpsr.s
*
* $Id: setcpsr.S,v 1.1 1996/04/24 11:08:32 deraadt Exp $
*/
fp .req r11
ip .req r12
sp .req r13
lr .req r14
pc .req r15
.text
.global _SetCPSR
/* Sets and clears bits in the CPSR register
*
* r0 - bic mask
* r1 - eor mask
*/
_SetCPSR:
/* mov ip, sp
stmfd sp!, {fp, ip, lr, pc}
sub fp, ip, #4*/
mrs r3, cpsr_all /* Set the CPSR */
bic r2, r3, r0
eor r2, r2, r1
msr cpsr_all, r2
mov r0, r3 /* Return the old CPSR */
/* ldmea fp, {fp, sp, pc}*/
mov pc, lr
.global _GetCPSR
/* Gets the CPSR register
*
* Returns the CPSR in r0
*/
_GetCPSR:
mrs r0, cpsr_all /* Get the CPSR */
mov pc, lr
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