xref: /openbsd/lib/libm/arch/amd64/s_scalbnf.S (revision d415bd75)
1/*	$OpenBSD: s_scalbnf.S,v 1.6 2018/07/03 22:43:34 mortimer Exp $ */
2/*
3 * Written by J.T. Conklin <jtc@NetBSD.org>.
4 * Public domain.
5 */
6
7#include <machine/asm.h>
8
9#include "abi.h"
10
11.global ldexpf
12	ldexpf = scalbnf
13
14ENTRY(scalbnf)
15	RETGUARD_SETUP(scalbnf, r11)
16	movss	%xmm0,-8(%rsp)
17	movl	%edi,-4(%rsp)
18	fildl	-4(%rsp)
19	flds	-8(%rsp)
20	fscale
21	fstp	%st(1)		/* bug fix for fp stack overflow */
22	fstps	-8(%rsp)
23	movss	-8(%rsp),%xmm0
24	RETGUARD_CHECK(scalbnf, r11)
25	ret
26END_STD(scalbnf)
27