/* $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