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_protos.h" 34 ENTRY(remquol) 35 fldt 24(%rsp) / load arg y 36 fldt 8(%rsp) / load arg x 37.Lreml_loop: 38 fprem1 / partial remainder 39 fstsw %ax / store status word 40 andw $0x400,%ax / check whether reduction complete 41 jne .Lreml_loop / while reduction incomplete, do fprem1 42 fstsw %ax 43 fwait 44 fstp %st(1) 45 movw %ax,%dx 46 andw $0x4000,%dx / get C3 47 sarw $13,%dx 48 movw %ax,%cx 49 andw $0x100,%cx / get C0 50 sarw $6,%cx 51 addw %cx,%dx 52 andw $0x200,%ax / get C1 53 sarw $9,%ax 54 addw %dx,%ax 55 cwtl 56 movl 16(%rsp),%edx / sign and bexp of x 57 movl 32(%rsp),%ecx / sign and bexp of y 58 andl $0x8000,%edx / edx <- sign(x) 59 andl $0x8000,%ecx / ecx <- sign(y) 60 cmpl %edx,%ecx 61 je 1f 62 negl %eax / negative n 631: 64 movl %eax,(%rdi) / last 3 significant bits of quotient 65 ret 66 .align 16 67 SET_SIZE(remquol) 68