1*5d9d9091SRichard Lowe/* 2*5d9d9091SRichard Lowe * CDDL HEADER START 3*5d9d9091SRichard Lowe * 4*5d9d9091SRichard Lowe * The contents of this file are subject to the terms of the 5*5d9d9091SRichard Lowe * Common Development and Distribution License (the "License"). 6*5d9d9091SRichard Lowe * You may not use this file except in compliance with the License. 7*5d9d9091SRichard Lowe * 8*5d9d9091SRichard Lowe * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9*5d9d9091SRichard Lowe * or http://www.opensolaris.org/os/licensing. 10*5d9d9091SRichard Lowe * See the License for the specific language governing permissions 11*5d9d9091SRichard Lowe * and limitations under the License. 12*5d9d9091SRichard Lowe * 13*5d9d9091SRichard Lowe * When distributing Covered Code, include this CDDL HEADER in each 14*5d9d9091SRichard Lowe * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15*5d9d9091SRichard Lowe * If applicable, add the following below this CDDL HEADER, with the 16*5d9d9091SRichard Lowe * fields enclosed by brackets "[]" replaced with your own identifying 17*5d9d9091SRichard Lowe * information: Portions Copyright [yyyy] [name of copyright owner] 18*5d9d9091SRichard Lowe * 19*5d9d9091SRichard Lowe * CDDL HEADER END 20*5d9d9091SRichard Lowe */ 21*5d9d9091SRichard Lowe 22*5d9d9091SRichard Lowe/* 23*5d9d9091SRichard Lowe * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24*5d9d9091SRichard Lowe * Use is subject to license terms. 25*5d9d9091SRichard Lowe */ 26*5d9d9091SRichard Lowe 27*5d9d9091SRichard Lowe/* Copyright (c) 1988 AT&T */ 28*5d9d9091SRichard Lowe/* All Rights Reserved */ 29*5d9d9091SRichard Lowe 30*5d9d9091SRichard Lowe .file "fpsetmask.s" 31*5d9d9091SRichard Lowe 32*5d9d9091SRichard Lowe/* 33*5d9d9091SRichard Lowe * fp_except fpsetmask(mask) 34*5d9d9091SRichard Lowe * fp_except mask; 35*5d9d9091SRichard Lowe * set exception masks as defined by user and return 36*5d9d9091SRichard Lowe * previous setting 37*5d9d9091SRichard Lowe * any sticky bit set whose corresponding mask is dis-abled 38*5d9d9091SRichard Lowe * is cleared 39*5d9d9091SRichard Lowe */ 40*5d9d9091SRichard Lowe 41*5d9d9091SRichard Lowe#include "SYS.h" 42*5d9d9091SRichard Lowe 43*5d9d9091SRichard Lowe ANSI_PRAGMA_WEAK(fpsetmask,function) 44*5d9d9091SRichard Lowe 45*5d9d9091SRichard Lowe ENTRY(fpsetmask) 46*5d9d9091SRichard Lowe add %sp, -SA(MINFRAME), %sp ! get an additional word of storage 47*5d9d9091SRichard Lowe set 0x0f800000, %o4 ! mask of trap enable bits 48*5d9d9091SRichard Lowe sll %o0, 23, %o1 ! move input bits into position 49*5d9d9091SRichard Lowe st %fsr, [%sp+ARGPUSH] ! get fsr value 50*5d9d9091SRichard Lowe ld [%sp+ARGPUSH], %o0 ! load into register 51*5d9d9091SRichard Lowe and %o1, %o4, %o1 ! generate new fsr value 52*5d9d9091SRichard Lowe andn %o0, %o4, %o2 53*5d9d9091SRichard Lowe or %o1, %o2, %o1 54*5d9d9091SRichard Lowe st %o1, [%sp+ARGPUSH] ! move new fsr value to memory 55*5d9d9091SRichard Lowe ld [%sp+ARGPUSH], %fsr ! load fsr with new value 56*5d9d9091SRichard Lowe and %o0, %o4, %o0 ! mask off bits of interest in old fsr 57*5d9d9091SRichard Lowe srl %o0, 23, %o0 ! return old trap enable value 58*5d9d9091SRichard Lowe retl 59*5d9d9091SRichard Lowe add %sp, SA(MINFRAME), %sp ! reclaim stack space 60*5d9d9091SRichard Lowe 61*5d9d9091SRichard Lowe SET_SIZE(fpsetmask) 62