1 /* 2 * Written by J.T. Conklin <jtc (at) netbsd.org>. 3 * Public domain. 4 */ 5 6 #include <machine/asm.h> 7 8 __FBSDID("$FreeBSD: src/lib/msun/i387/s_floorf.S,v 1.2 2005/05/06 15:44:20 deischen Exp $"); 9 /* RCSID("$NetBSD: s_floorf.S,v 1.3 1995/05/09 00:04:32 jtc Exp $") */ 10 11 ENTRY(floorf) 12 pushl %ebp 13 movl %esp,%ebp 14 subl $8,%esp 15 16 fstcw -4(%ebp) /* store fpu control word */ 17 movw -4(%ebp),%dx 18 orw $0x0400,%dx /* round towards -oo */ 19 andw $0xf7ff,%dx 20 movw %dx,-8(%ebp) 21 fldcw -8(%ebp) /* load modfied control word */ 22 23 flds 8(%ebp); /* round */ 24 frndint 25 26 fldcw -4(%ebp) /* restore original control word */ 27 28 leave 29 ret 30
