2005-01-13 18:58:25 +00:00
|
|
|
/*
|
|
|
|
|
* Written by J.T. Conklin <jtc@netbsd.org>.
|
|
|
|
|
* Public domain.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#include <machine/asm.h>
|
|
|
|
|
|
|
|
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
|
/* RCSID("$NetBSD: s_floorf.S,v 1.3 1995/05/09 00:04:32 jtc Exp $") */
|
|
|
|
|
|
|
|
|
|
ENTRY(floorf)
|
|
|
|
|
pushl %ebp
|
|
|
|
|
movl %esp,%ebp
|
|
|
|
|
subl $8,%esp
|
|
|
|
|
|
2005-05-06 15:44:20 +00:00
|
|
|
fstcw -4(%ebp) /* store fpu control word */
|
|
|
|
|
movw -4(%ebp),%dx
|
2005-01-13 18:58:25 +00:00
|
|
|
orw $0x0400,%dx /* round towards -oo */
|
|
|
|
|
andw $0xf7ff,%dx
|
2005-05-06 15:44:20 +00:00
|
|
|
movw %dx,-8(%ebp)
|
|
|
|
|
fldcw -8(%ebp) /* load modfied control word */
|
2005-01-13 18:58:25 +00:00
|
|
|
|
|
|
|
|
flds 8(%ebp); /* round */
|
|
|
|
|
frndint
|
|
|
|
|
|
2005-05-06 15:44:20 +00:00
|
|
|
fldcw -4(%ebp) /* restore original control word */
|
2005-01-13 18:58:25 +00:00
|
|
|
|
|
|
|
|
leave
|
|
|
|
|
ret
|
2009-05-25 14:37:10 +00:00
|
|
|
END(floorf)
|
