freebsd-nq/lib/msun/i387/s_floorl.S

29 lines
500 B
ArmAsm
Raw Normal View History

2005-04-16 21:12:55 +00:00
/*
* Based on code written by J.T. Conklin <jtc@NetBSD.org>.
* Public domain.
*/
#include <machine/asm.h>
__FBSDID("$FreeBSD$")
ENTRY(floorl)
pushl %ebp
movl %esp,%ebp
subl $8,%esp
fstcw -4(%ebp) /* store fpu control word */
movw -4(%ebp),%dx
orw $0x0400,%dx /* round towards -oo */
andw $0xf7ff,%dx
movw %dx,-8(%ebp)
fldcw -8(%ebp) /* load modfied control word */
fldt 8(%ebp) /* round */
frndint
fldcw -4(%ebp) /* restore original control word */
leave
ret
END(floorl)