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fpsetsticky.S revision 1.3 
      1  1.3     fvdl /*	$NetBSD: fpsetsticky.S,v 1.3 2002/06/12 19:17:23 fvdl Exp $	*/
      2  1.1     fvdl 
      3  1.1     fvdl /*
      4  1.3     fvdl  * Written by Frank van der Linden at Wasabi Systems for NetBSD
      5  1.1     fvdl  * Public domain.
      6  1.1     fvdl  */
      7  1.1     fvdl 
      8  1.1     fvdl #include <machine/asm.h>
      9  1.1     fvdl 
     10  1.3     fvdl /*
     11  1.3     fvdl  * XXX set both the x87 status word and the SSE mxcsr register.
     12  1.3     fvdl  * Applications should only set exception and round flags
     13  1.3     fvdl  * via the fp*() interface, otherwise the status words
     14  1.3     fvdl  * will get our of sync.
     15  1.3     fvdl  */
     16  1.3     fvdl 
     17  1.3     fvdl 
     18  1.2  thorpej #ifdef WEAK_ALIAS
     19  1.2  thorpej WEAK_ALIAS(fpsetsticky, _fpsetsticky)
     20  1.2  thorpej ENTRY(_fpsetsticky)
     21  1.2  thorpej #else
     22  1.1     fvdl ENTRY(fpsetsticky)
     23  1.2  thorpej #endif
     24  1.3     fvdl 	fnstenv	-28(%rsp)
     25  1.3     fvdl 	stmxcsr	-32(%rsp)
     26  1.3     fvdl 
     27  1.3     fvdl 	andl	$63,%edi
     28  1.3     fvdl 
     29  1.3     fvdl 	movl	-24(%rsp),%eax
     30  1.3     fvdl 	movl	%eax,%edx
     31  1.3     fvdl 	andl	$63,%eax
     32  1.3     fvdl 
     33  1.3     fvdl 	orl	%edi,%edx
     34  1.3     fvdl 	movl	%edx,-24(%rsp)
     35  1.3     fvdl 
     36  1.3     fvdl 	movl	-32(%rsp),%edx
     37  1.3     fvdl 	orl	%edi,%edx
     38  1.3     fvdl 	movl	%edx,-32(%rsp)
     39  1.3     fvdl 
     40  1.3     fvdl 	ldmxcsr	-32(%rsp)
     41  1.3     fvdl 	fldenv	-28(%rsp)
     42  1.1     fvdl 	ret
     43