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fpsetmask.S revision 1.1.2.1 
      1  1.1.2.1  nathanw /*	$NetBSD: fpsetmask.S,v 1.1.2.1 2002/01/28 20:49:47 nathanw Exp $	*/
      2      1.1    bjh21 
      3      1.1    bjh21 /*
      4      1.1    bjh21  * Copyright (c) 1996 Mark Brinicombe
      5      1.1    bjh21  * All rights reserved.
      6      1.1    bjh21  *
      7      1.1    bjh21  * Redistribution and use in source and binary forms, with or without
      8      1.1    bjh21  * modification, are permitted provided that the following conditions
      9      1.1    bjh21  * are met:
     10      1.1    bjh21  * 1. Redistributions of source code must retain the above copyright
     11      1.1    bjh21  *    notice, this list of conditions and the following disclaimer.
     12      1.1    bjh21  * 2. Redistributions in binary form must reproduce the above copyright
     13      1.1    bjh21  *    notice, this list of conditions and the following disclaimer in the
     14      1.1    bjh21  *    documentation and/or other materials provided with the distribution.
     15      1.1    bjh21  * 3. All advertising materials mentioning features or use of this software
     16      1.1    bjh21  *    must display the following acknowledgement:
     17      1.1    bjh21  *	This product includes software developed by Mark Brinicombe
     18      1.1    bjh21  *	for the NetBSD project.
     19      1.1    bjh21  * 4. Neither the name of the University nor the names of its contributors
     20      1.1    bjh21  *    may be used to endorse or promote products derived from this software
     21      1.1    bjh21  *    without specific prior written permission.
     22      1.1    bjh21  *
     23      1.1    bjh21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     24      1.1    bjh21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25      1.1    bjh21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26      1.1    bjh21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     27      1.1    bjh21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28      1.1    bjh21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29      1.1    bjh21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30      1.1    bjh21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31      1.1    bjh21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32      1.1    bjh21  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33      1.1    bjh21  * SUCH DAMAGE.
     34      1.1    bjh21  */
     35      1.1    bjh21 
     36      1.1    bjh21 #include <machine/asm.h>
     37      1.1    bjh21 
     38      1.1    bjh21 /*
     39      1.1    bjh21  * Set the current FP exception enable mask
     40      1.1    bjh21  */
     41      1.1    bjh21 
     42  1.1.2.1  nathanw #ifdef WEAK_ALIAS
     43  1.1.2.1  nathanw WEAK_ALIAS(fpsetmask, _fpsetmask)
     44  1.1.2.1  nathanw ENTRY(_fpsetmask)
     45  1.1.2.1  nathanw #else
     46      1.1    bjh21 ENTRY(fpsetmask)
     47  1.1.2.1  nathanw #endif
     48      1.1    bjh21 	rfs	r1
     49      1.1    bjh21 	bic	r1, r1, #0x001f0000
     50      1.1    bjh21 	and	r0, r0, #0x0000001f
     51      1.1    bjh21 	orr	r0, r1, r0, lsl #16
     52      1.1    bjh21 	wfs	r0
     53      1.1    bjh21 	mov	r0, r1, lsr #16		/* Return old mask */
     54      1.1    bjh21 #ifdef __APCS_26__
     55      1.1    bjh21 	movs	r15, r14		/* return */
     56      1.1    bjh21 #else
     57      1.1    bjh21 	mov	r15, r14		/* return */
     58      1.1    bjh21 #endif
     59