1996-03-18 22:54:53 +03:00
|
|
|
/* $NetBSD: fpecmf.S,v 1.2 1996/03/18 19:58:13 mark Exp $ */
|
1996-02-01 02:14:53 +03:00
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* 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
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
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
|
|
|
|
|
|
