blob: af45c3420827fa9f665f9d3f97f1a69032505c9d (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
/*
* Written by J.T. Conklin <jtc@netbsd.org>.
* Public domain.
*/
#include <machine/asm.h>
RCSID("$NetBSD: s_floor.S,v 1.4 1995/05/09 00:01:59 jtc Exp $")
ENTRY(floor)
subl $8,%esp
fstcw 4(%esp) /* store fpu control word */
movw 4(%esp),%dx
orw $0x0400,%dx /* round towards -oo */
andw $0xf7ff,%dx
movw %dx,(%esp)
fldcw (%esp) /* load modfied control word */
fldl 12(%esp); /* round */
frndint
fldcw 4(%esp) /* restore original control word */
addl $8,%esp
ret
|
