Cross Reference: /src/lib/libc/arch/x86_64/gen/fpsetmask.S

fpsetmask.S revision 1.1

      1 /*	$NetBSD: fpsetmask.S,v 1.1 2001/06/19 00:25:03 fvdl Exp $	*/
      2 
      3 /*
      4  * Written by Charles M. Hannum, Apr 9, 1995
      5  * Public domain.
      6  */
      7 
      8 #include <machine/asm.h>
      9 
     10 ENTRY(fpsetmask)
     11 	fnstcw -4(%rsp)
     12 	movl -4(%rsp),%eax
     13 	movl %eax,%edx
     14 
     15 	notl %eax
     16 	andl $63,%eax
     17 
     18 	addl %eax,%edx
     19 	andl $63,%edi
     20 	subl %edi,%edx
     21 	movl %edx,-4(%rsp)
     22 	fldcw -4(%rsp)
     23 	ret
     24