1/* $NetBSD: n_infnan.S,v 1.6 2003/08/07 16:44:45 agc Exp $ */ 2/* 3 * Copyright (c) 1985, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * @(#)infnan.s 8.1 (Berkeley) 6/4/93 31 */ 32#include <machine/asm.h> 33 34 .text 35_sccsid: 36 .asciz "@(#)infnan.s\t1.1 (Berkeley) 8/21/85; 8.1 (ucb.elefunt) 6/4/93" 37 38/* 39 * infnan(arg) int arg; 40 * where arg := EDOM if result is NaN 41 * := ERANGE if result is +INF 42 * := -ERANGE if result is -INF 43 * 44 * The Reserved Operand Fault is generated inside of this routine. 45 */ 46 .set EDOM,33 47 .set ERANGE,34 48 49ENTRY(infnan, 0) 50 cmpl 4(%ap),$ERANGE 51 bneq 1f 52 movl $ERANGE,_C_LABEL(errno) 53 brb 2f 541: movl $EDOM,_C_LABEL(errno) 552: emodd $0,$0,$0x8000,%r0,%r0 # generates the reserved operand fault 56 ret 57