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      1  1.2  uebayasi /*	$NetBSD: fpsetprec.S,v 1.2 2014/05/22 15:01:56 uebayasi Exp $	*/
      2  1.1  christos 
      3  1.1  christos /*
      4  1.1  christos  * Written by Frank van der Linden at Wasabi Systems for NetBSD.
      5  1.1  christos  * Public domain.
      6  1.1  christos  */
      7  1.1  christos 
      8  1.1  christos #include <machine/asm.h>
      9  1.1  christos 
     10  1.1  christos /*
     11  1.1  christos  * XXX set both the x87 control word and the SSE mxcsr register.
     12  1.1  christos  * Applications should only set exception and round flags
     13  1.1  christos  * via the fp*() interface, otherwise the status words
     14  1.1  christos  * will get our of sync.
     15  1.1  christos  */
     16  1.1  christos 
     17  1.1  christos 
     18  1.1  christos #ifdef WEAK_ALIAS
     19  1.1  christos WEAK_ALIAS(fpsetprec, _fpsetprec)
     20  1.1  christos ENTRY(_fpsetprec)
     21  1.1  christos #else
     22  1.1  christos ENTRY(fpsetprec)
     23  1.1  christos #endif
     24  1.1  christos 	fnstcw	-4(%rsp)
     25  1.1  christos 
     26  1.1  christos 	andl	$3,%edi
     27  1.1  christos 
     28  1.1  christos 	movl	-4(%rsp),%edx
     29  1.1  christos 	rorl	$8,%edx
     30  1.1  christos 	movl	%edx,%eax
     31  1.1  christos 	andl	$3,%eax
     32  1.1  christos 
     33  1.1  christos 	andl	$~3,%edx
     34  1.1  christos 	orl	%edi,%edx
     35  1.1  christos 	roll	$8,%edx
     36  1.1  christos 	movl	%edx,-4(%rsp)
     37  1.1  christos 
     38  1.1  christos 	fldcw	-4(%rsp)
     39  1.1  christos 	ret
     40  1.2  uebayasi #ifdef WEAK_ALIAS
     41  1.2  uebayasi END(_fpsetprec)
     42  1.2  uebayasi #else
     43  1.2  uebayasi END(fpsetprec)
     44  1.2  uebayasi #endif
     45