1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22/* Copyright (c) 1988 AT&T */ 23/* All Rights Reserved */ 24 25 26/* Copyright (c) 1989 by Sun Microsystems, Inc. */ 27 28.ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.5.1.9 */ 29 30 .file "fpsetrnd.s" 31 32#include <sys/asm_linkage.h> 33 34 ANSI_PRAGMA_WEAK(fpsetround,function) 35 36#include "synonyms.h" 37 38 ENTRY(fpsetround) 39 add %sp, -SA(MINFRAME), %sp ! get an additional word of storage 40 set 0xc0000000, %o4 ! mask of round control bits 41 sll %o0, 30, %o1 ! move input bits into position 42 st %fsr, [%sp+ARGPUSH] ! get fsr value 43 ld [%sp+ARGPUSH], %o0 ! load into register 44 and %o1, %o4, %o1 ! generate new fsr value 45 andn %o0, %o4, %o2 46 or %o1, %o2, %o1 47 st %o1, [%sp+ARGPUSH] ! move new fsr value to memory 48 ld [%sp+ARGPUSH], %fsr ! load fsr with new value 49 srl %o0, 30, %o0 ! return old round control value 50 retl 51 add %sp, SA(MINFRAME), %sp ! reclaim stack space 52 53 SET_SIZE(fpsetround) 54