xref: /netbsd-src/lib/libc/arch/x86_64/gen/fpgetround.S (revision 326b2259b73e878289ebd80cd9d20bc5aee35e99)
1/*	$NetBSD: fpgetround.S,v 1.3 2002/06/12 19:17:22 fvdl Exp $	*/
2
3/*
4 * Written by J.T. Conklin, Apr 4, 1995
5 * Public domain.
6 */
7
8#include <machine/asm.h>
9
10/*
11 * XXX store only x87 state. If an application only uses the fp*
12 * interface, this should be in sync with the SSE mxcsr register.
13 */
14
15#ifdef WEAK_ALIAS
16WEAK_ALIAS(fpgetround, _fpgetround)
17ENTRY(_fpgetround)
18#else
19ENTRY(fpgetround)
20#endif
21	fnstcw -4(%rsp)
22	movl -4(%rsp),%eax
23	rorl $10,%eax
24	andl $3,%eax
25	ret
26