5980be9b3c
This work is based in part on code from NetBSD libm, libc and kernel. The library is partly public domain and partly BSD-style licensed.
46 lines
773 B
ArmAsm
46 lines
773 B
ArmAsm
/*
|
|
* Written by J.T. Conklin <jtc@NetBSD.org>.
|
|
* Public domain.
|
|
*/
|
|
|
|
#include <machine/asm.h>
|
|
|
|
#include "abi.h"
|
|
|
|
RCSID("$NetBSD: s_ceil.S,v 1.8 2011/06/18 21:24:51 joerg Exp $")
|
|
|
|
ENTRY(ceil)
|
|
#ifdef __i386__
|
|
pushl %ebp
|
|
movl %esp,%ebp
|
|
subl $8,%esp
|
|
|
|
fstcw -4(%ebp) /* store fpu control word */
|
|
movw -4(%ebp),%dx
|
|
orw $0x0800,%dx /* round towards +oo */
|
|
andw $0xfbff,%dx
|
|
movw %dx,-8(%ebp)
|
|
fldcw -8(%ebp) /* load modfied control word */
|
|
|
|
fldl 8(%ebp) /* round */
|
|
frndint
|
|
|
|
fldcw -4(%ebp) /* restore original control word */
|
|
|
|
leave
|
|
#else
|
|
fstcw -12(%rsp)
|
|
movw -12(%rsp),%dx
|
|
orw $0x0800,%dx
|
|
andw $0xfbff,%dx
|
|
movw %dx,-16(%rsp)
|
|
fldcw -16(%rsp)
|
|
movsd %xmm0,-8(%rsp)
|
|
fldl -8(%rsp)
|
|
frndint
|
|
fldcw -12(%rsp)
|
|
fstpl -8(%rsp)
|
|
movsd -8(%rsp),%xmm0
|
|
#endif
|
|
ret
|