mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
27 lines
469 B
ArmAsm
27 lines
469 B
ArmAsm
/*
|
|
* Based on code written by J.T. Conklin <jtc@NetBSD.org>.
|
|
* Public domain.
|
|
*/
|
|
|
|
#include <machine/asm.h>
|
|
__FBSDID("$FreeBSD$")
|
|
|
|
ENTRY(trunc)
|
|
pushl %ebp
|
|
movl %esp,%ebp
|
|
subl $8,%esp
|
|
|
|
fstcw -4(%ebp) /* store fpu control word */
|
|
movw -4(%ebp),%dx
|
|
orw $0x0c00,%dx /* round towards -oo */
|
|
movw %dx,-8(%ebp)
|
|
fldcw -8(%ebp) /* load modfied control word */
|
|
|
|
fldl 8(%ebp) /* round */
|
|
frndint
|
|
|
|
fldcw -4(%ebp) /* restore original control word */
|
|
|
|
leave
|
|
ret
|