10Sstevel@tonic-gate/* 20Sstevel@tonic-gate * CDDL HEADER START 30Sstevel@tonic-gate * 40Sstevel@tonic-gate * The contents of this file are subject to the terms of the 56812Sraf * Common Development and Distribution License (the "License"). 66812Sraf * You may not use this file except in compliance with the License. 70Sstevel@tonic-gate * 80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 100Sstevel@tonic-gate * See the License for the specific language governing permissions 110Sstevel@tonic-gate * and limitations under the License. 120Sstevel@tonic-gate * 130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 180Sstevel@tonic-gate * 190Sstevel@tonic-gate * CDDL HEADER END 200Sstevel@tonic-gate */ 216812Sraf 226812Sraf/* 236812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 246812Sraf * Use is subject to license terms. 256812Sraf */ 266812Sraf 270Sstevel@tonic-gate/* Copyright (c) 1988 AT&T */ 280Sstevel@tonic-gate/* All Rights Reserved */ 290Sstevel@tonic-gate 30*7298SMark.J.Nelson@Sun.COM .file "fpsetmask.s" 310Sstevel@tonic-gate 320Sstevel@tonic-gate/* 330Sstevel@tonic-gate * fp_except fpsetmask(mask) 340Sstevel@tonic-gate * fp_except mask; 350Sstevel@tonic-gate * set exception masks as defined by user and return 360Sstevel@tonic-gate * previous setting 370Sstevel@tonic-gate * any sticky bit set whose corresponding mask is dis-abled 380Sstevel@tonic-gate * is cleared 390Sstevel@tonic-gate */ 400Sstevel@tonic-gate 416812Sraf#include "SYS.h" 420Sstevel@tonic-gate 430Sstevel@tonic-gate ANSI_PRAGMA_WEAK(fpsetmask,function) 440Sstevel@tonic-gate 450Sstevel@tonic-gate ENTRY(fpsetmask) 460Sstevel@tonic-gate add %sp, -SA(MINFRAME), %sp ! get an additional word of storage 470Sstevel@tonic-gate set 0x0f800000, %o4 ! mask of trap enable bits 480Sstevel@tonic-gate sll %o0, 23, %o1 ! move input bits into position 490Sstevel@tonic-gate st %fsr, [%sp+ARGPUSH] ! get fsr value 500Sstevel@tonic-gate ld [%sp+ARGPUSH], %o0 ! load into register 510Sstevel@tonic-gate and %o1, %o4, %o1 ! generate new fsr value 520Sstevel@tonic-gate andn %o0, %o4, %o2 530Sstevel@tonic-gate or %o1, %o2, %o1 540Sstevel@tonic-gate st %o1, [%sp+ARGPUSH] ! move new fsr value to memory 550Sstevel@tonic-gate ld [%sp+ARGPUSH], %fsr ! load fsr with new value 560Sstevel@tonic-gate and %o0, %o4, %o0 ! mask off bits of interest in old fsr 570Sstevel@tonic-gate srl %o0, 23, %o0 ! return old trap enable value 580Sstevel@tonic-gate retl 590Sstevel@tonic-gate add %sp, SA(MINFRAME), %sp ! reclaim stack space 600Sstevel@tonic-gate 610Sstevel@tonic-gate SET_SIZE(fpsetmask) 62