/* $NetBSD: fpecmf.S,v 1.1 1996/01/31 23:21:12 mark Exp $ */

/*
 * Copyright (c) 1995 Mark Brinicombe.
 * Copyright (c) 1995 Neil Carson.
 * All rights reserved.
 *
 * 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 the RiscBSD kernel team.
 * 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 THE AUTHORS ``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 AUTHORS 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
 *
 * fpecmf.S
 *
 * FP compare
 *
 * Created      : 11/02/95
 * Last updated : 28/08/95
 *
 *    $Id: fpecmf.S,v 1.1 1996/01/31 23:21:12 mark Exp $
 */

pc	.req	r15

/* compare r0 with r1. sets status bits (in arm!) for result.*/

	.global	_nc_fp_cmp

_nc_fp_cmp:
    cmp r1,#0                       		/* r1 -ve? */
    bmi fp_cmp_r0
    cmp r0,r1                       		/* no - do normal cmp */
    mrs	r0, cpsr_all
    mov pc, r14
fp_cmp_r0:
    cmp r0,#0                       		/* r0 -ve? */ 
    bmi fp_cmp_neg                  		/* r0 & r1 -ve */
    cmp r0,r1
    mrs	r0, cpsr_all
    mov pc, r14
fp_cmp_neg:
    cmp r1,r0                       		/* opposite compare */

    mrs	r0, cpsr_all
    mov pc, r14