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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21/* 22 * Copyright 2011 Nexenta Systems, Inc. All rights reserved. 23 */ 24/* 25 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 26 * Use is subject to license terms. 27 */ 28 29 .file "remquol.s" 30 31#include "libm.h" 32LIBM_ANSI_PRAGMA_WEAK(remquol,function) 33#include "libm_synonyms.h" 34#include "libm_protos.h" 35 36 ENTRY(remquol) 37 fldt 16(%esp) / load arg y 38 fldt 4(%esp) / load arg x 39.Lreml_loop: 40 fprem1 / partial remainder 41 fstsw %ax / store status word 42 andw $0x400,%ax / check whether reduction complete 43 jne .Lreml_loop / while reduction incomplete, do fprem1 44 fstsw %ax 45 fwait 46 fstp %st(1) 47 movw %ax,%dx 48 andw $0x4000,%dx / get C3 49 sarw $13,%dx 50 movw %ax,%cx 51 andw $0x100,%cx / get C0 52 sarw $6,%cx 53 addw %cx,%dx 54 andw $0x200,%ax / get C1 55 sarw $9,%ax 56 addw %dx,%ax 57 cwtl 58 movl 12(%esp),%edx / sign and bexp of x 59 movl 24(%esp),%ecx / sign and bexp of y 60 andl $0x00008000,%edx / edx <- sign(x) 61 andl $0x00008000,%ecx / ecx <- sign(y) 62 cmpl %edx,%ecx 63 je .pos 64 negl %eax / negative n 65.pos: 66 movl 28(%esp),%ecx 67 movl %eax,0(%ecx) / last 3 significant bits of quotient 68 ret 69 .align 4 70 SET_SIZE(remquol) 71