mirror of
https://git.planet-casio.com/Lephenixnoir/OpenLibm.git
synced 2024-12-29 13:03:42 +01:00
61 lines
2.2 KiB
ArmAsm
61 lines
2.2 KiB
ArmAsm
|
/*
|
||
|
|
* Copyright (c) 1993,94 Winning Strategies, Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* 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. All advertising materials mentioning features or use of this software
|
||
|
|
* must display the following acknowledgement:
|
||
|
|
* This product includes software developed by Winning Strategies, Inc.
|
||
|
|
* 4. The name of the author may not be used to endorse or promote products
|
||
|
|
* derived from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Written by:
|
||
|
|
* J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <machine/asm.h>
|
||
|
|
__FBSDID("$FreeBSD: src/lib/msun/i387/s_floor.S,v 1.10 2011/01/07 16:13:12 kib Exp $")
|
||
|
|
|
||
|
|
ENTRY(floor)
|
||
|
|
pushl %ebp
|
||
|
|
movl %esp,%ebp
|
||
|
|
subl $8,%esp
|
||
|
|
|
||
|
|
fstcw -4(%ebp) /* store fpu control word */
|
||
|
|
movw -4(%ebp),%dx
|
||
|
|
orw $0x0400,%dx /* round towards -oo */
|
||
|
|
andw $0xf7ff,%dx
|
||
|
|
movw %dx,-8(%ebp)
|
||
|
|
fldcw -8(%ebp) /* load modfied control word */
|
||
|
|
|
||
|
|
fldl 8(%ebp); /* round */
|
||
|
|
frndint
|
||
|
|
|
||
|
|
fldcw -4(%ebp) /* restore original control word */
|
||
|
|
|
||
|
|
leave
|
||
|
|
ret
|
||
|
|
END(floor)
|
||
|
|
|
||
|
|
.section .note.GNU-stack,"",%progbits
|