13a8617a8SJordan K. Hubbard/* 23a8617a8SJordan K. Hubbard * Copyright (c) 1993,94 Winning Strategies, Inc. 33a8617a8SJordan K. Hubbard * All rights reserved. 43a8617a8SJordan K. Hubbard * 53a8617a8SJordan K. Hubbard * Redistribution and use in source and binary forms, with or without 63a8617a8SJordan K. Hubbard * modification, are permitted provided that the following conditions 73a8617a8SJordan K. Hubbard * are met: 83a8617a8SJordan K. Hubbard * 1. Redistributions of source code must retain the above copyright 93a8617a8SJordan K. Hubbard * notice, this list of conditions and the following disclaimer. 103a8617a8SJordan K. Hubbard * 2. Redistributions in binary form must reproduce the above copyright 113a8617a8SJordan K. Hubbard * notice, this list of conditions and the following disclaimer in the 123a8617a8SJordan K. Hubbard * documentation and/or other materials provided with the distribution. 133a8617a8SJordan K. Hubbard * 3. All advertising materials mentioning features or use of this software 143a8617a8SJordan K. Hubbard * must display the following acknowledgement: 153a8617a8SJordan K. Hubbard * This product includes software developed by Winning Strategies, Inc. 163a8617a8SJordan K. Hubbard * 4. The name of the author may not be used to endorse or promote products 173a8617a8SJordan K. Hubbard * derived from this software without specific prior written permission. 183a8617a8SJordan K. Hubbard * 193a8617a8SJordan K. Hubbard * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 203a8617a8SJordan K. Hubbard * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 213a8617a8SJordan K. Hubbard * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 223a8617a8SJordan K. Hubbard * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 233a8617a8SJordan K. Hubbard * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 243a8617a8SJordan K. Hubbard * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 253a8617a8SJordan K. Hubbard * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 263a8617a8SJordan K. Hubbard * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 273a8617a8SJordan K. Hubbard * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 283a8617a8SJordan K. Hubbard * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 293a8617a8SJordan K. Hubbard */ 303a8617a8SJordan K. Hubbard 313a8617a8SJordan K. Hubbard/* 323a8617a8SJordan K. Hubbard * Written by: 333a8617a8SJordan K. Hubbard * J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc. 343a8617a8SJordan K. Hubbard */ 353a8617a8SJordan K. Hubbard 366b04d991SBruce Evans#include <machine/asm.h> 373a8617a8SJordan K. Hubbard 387f3dea24SPeter WemmRCSID("$FreeBSD$") 393a8617a8SJordan K. Hubbard 403a8617a8SJordan K. HubbardENTRY(floor) 413a8617a8SJordan K. Hubbard pushl %ebp 423a8617a8SJordan K. Hubbard movl %esp,%ebp 433a8617a8SJordan K. Hubbard subl $8,%esp 443a8617a8SJordan K. Hubbard 45c5dd4039SBruce Evans fstcw -4(%ebp) /* store fpu control word */ 46c5dd4039SBruce Evans movw -4(%ebp),%dx 473a8617a8SJordan K. Hubbard orw $0x0400,%dx /* round towards -oo */ 483a8617a8SJordan K. Hubbard andw $0xf7ff,%dx 49c5dd4039SBruce Evans movw %dx,-8(%ebp) 50c5dd4039SBruce Evans fldcw -8(%ebp) /* load modfied control word */ 513a8617a8SJordan K. Hubbard 523a8617a8SJordan K. Hubbard fldl 8(%ebp); /* round */ 533a8617a8SJordan K. Hubbard frndint 543a8617a8SJordan K. Hubbard 55c5dd4039SBruce Evans fldcw -4(%ebp) /* restore original control word */ 563a8617a8SJordan K. Hubbard 573a8617a8SJordan K. Hubbard leave 583a8617a8SJordan K. Hubbard ret 599235ed71SAttilio RaoEND(floor) 60