ipiq: Add simple IPI latency measure sysctls (2)
[dragonfly.git] / lib / libm / i386 / s_trunc.S
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6ff43c94
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1/*
2 * Based on code written by J.T. Conklin <jtc@NetBSD.org>.
3 * Public domain.
4 *
5 * $FreeBSD: head/lib/msun/i387/s_trunc.S 217108 2011-01-07 16:13:12Z kib $
6 */
7
8#include <machine/asm.h>
9
10ENTRY(trunc)
11 pushl %ebp
12 movl %esp,%ebp
13 subl $8,%esp
14
15 fstcw -4(%ebp) /* store fpu control word */
16 movw -4(%ebp),%dx
17 orw $0x0c00,%dx /* round towards -oo */
18 movw %dx,-8(%ebp)
19 fldcw -8(%ebp) /* load modfied control word */
20
21 fldl 8(%ebp) /* round */
22 frndint
23
24 fldcw -4(%ebp) /* restore original control word */
25
26 leave
27 ret
28END(trunc)
29
30 .section .note.GNU-stack,"",%progbits