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 2005 Sun Microsystems, Inc. All rights reserved. 26 * Use is subject to license terms. 27 */ 28 29 .file "remainder.s" 30 31#include "libm.h" 32LIBM_ANSI_PRAGMA_WEAK(remainder,function) 33#include "libm_synonyms.h" 34#include "libm_protos.h" 35 36 ENTRY(remainder) 37 pushl %ebp 38 movl %esp,%ebp 39 fldl 16(%esp) / load arg y 40 fldl 8(%esp) / load arg x 41 fucom 42 fnstsw %ax 43 sahf 44 jp .rem_loop / if x or y is NaN, use fprem1 45 46 movl 20(%esp),%eax / eax <-- hi_32(y) 47 andl $0x7fffffff,%eax / eax <-- hi_32(|y|) 48 orl 16(%esp),%eax / eax <-- lo_32(y)|hi_32(|y|) 49 je .yzero_or_xinf 50 51 movl 12(%esp),%eax / eax <-- hi_32(x) 52 andl $0x7fffffff,%eax / eax <-- hi_32(|x|) 53 cmpl $0x7ff00000,%eax 54 jne .rem_loop 55 cmpl $0,8(%esp) 56 je .yzero_or_xinf 57 58.rem_loop: 59 fprem1 / partial remainder 60 fstsw %ax / store status word 61 andw $0x400,%ax / check for incomplete reduction 62 jne .rem_loop / while incomplete, do fprem1 again 63 fstp %st(1) 64 leave 65 ret 66 67.yzero_or_xinf: 68 PIC_SETUP(1) 69 fstp %st(0) / x 70 fstp %st(0) / empty NPX stack 71 pushl $28 / case 28 in _SVID_libm_err 72 pushl 20(%ebp) / pass y 73 pushl 16(%ebp) 74 pushl 12(%ebp) / pass x 75 pushl 8(%ebp) 76 call PIC_F(_SVID_libm_err) 77 addl $20,%esp 78 PIC_WRAPUP 79 leave 80 ret 81 .align 4 82 SET_SIZE(remainder) 83