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/* $OpenBSD: fixunsdfsi.S,v 1.7 2014/11/14 07:31:13 daniel Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <machine/asm.h>
ENTRY(__fixunsdfsi)
fldl 4(%esp) /* argument double to accum stack */
frndint /* create integer */
#ifdef __PIC__
PIC_PROLOGUE
leal PIC_GOTOFF(fbiggestsigned),%eax
PIC_EPILOGUE
fcoml (%eax)
#else
fcoml fbiggestsigned /* bigger than biggest signed? */
#endif
fstsw %ax
sahf
jnb 1f
fistpl 4(%esp)
movl 4(%esp),%eax
ret
1:
#ifdef __PIC__
PIC_PROLOGUE
leal PIC_GOTOFF(fbiggestsigned),%eax
PIC_EPILOGUE
fsubl (%eax)
#else
fsubl fbiggestsigned /* reduce for proper conversion */
#endif
fistpl 4(%esp) /* convert */
movl 4(%esp),%eax
orl $0x80000000,%eax /* restore bias */
ret
fbiggestsigned: .double 2147483648.0
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