1/* $NetBSD: fixunsdfsi.S,v 1.10 1999/02/22 13:07:14 christos Exp $ */ 2 3/*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * from: @(#)fixunsdfsi.s 5.1 12/17/90 39 */ 40 41#include <machine/asm.h> 42#if defined(LIBC_SCCS) 43 RCSID("$NetBSD: fixunsdfsi.S,v 1.10 1999/02/22 13:07:14 christos Exp $") 44#endif 45 46ENTRY(__fixunsdfsi) 47 fldl 4(%esp) /* argument double to accum stack */ 48 frndint /* create integer */ 49#ifdef PIC 50 PIC_PROLOGUE 51 leal PIC_GOTOFF(fbiggestsigned),%eax 52 PIC_EPILOGUE 53 fcoml (%eax) 54#else 55 fcoml fbiggestsigned /* bigger than biggest signed? */ 56#endif 57 fstsw %ax 58 sahf 59 jnb 2f 60 61 fistpl 4(%esp) 62 movl 4(%esp),%eax 63 ret 64 652: 66#ifdef PIC 67 PIC_PROLOGUE 68 leal PIC_GOTOFF(fbiggestsigned),%eax 69 PIC_EPILOGUE 70 fsubl (%eax) 71#else 72 fsubl fbiggestsigned /* reduce for proper conversion */ 73#endif 74 fistpl 4(%esp) /* convert */ 75 movl 4(%esp),%eax 76 orl $0x80000000,%eax /* restore bias */ 77 ret 78 79fbiggestsigned: .double 0r2147483648.0 80