ipiq: Add simple IPI latency measure sysctls (2)
[dragonfly.git] / lib / libm / i386 / s_floor.S
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1/*
2 * Copyright (c) 1993,94 Winning Strategies, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Winning Strategies, Inc.
16 * 4. The name of the author may not be used to endorse or promote products
17 * derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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29 *
30 * $FreeBSD: head/lib/msun/i387/s_floor.S 217108 2011-01-07 16:13:12Z kib $
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31 */
32
33/*
34 * Written by:
35 * J.T. Conklin (jtc@wimsey.com), Winning Strategies, Inc.
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36 */
37
38#include <machine/asm.h>
39
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40ENTRY(floor)
41 pushl %ebp
42 movl %esp,%ebp
43 subl $8,%esp
44
45 fstcw -4(%ebp) /* store fpu control word */
46 movw -4(%ebp),%dx
47 orw $0x0400,%dx /* round towards -oo */
48 andw $0xf7ff,%dx
49 movw %dx,-8(%ebp)
50 fldcw -8(%ebp) /* load modfied control word */
51
52 fldl 8(%ebp) /* round */
53 frndint
54
55 fldcw -4(%ebp) /* restore original control word */
56
57 leave
1a3b704c 58 ret
6ff43c94 59END(floor)
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60
61 .section .note.GNU-stack,"",%progbits