StdLib/LibC/Main/X64/fpu_rmode.S

   1 #------------------------------------------------------------------------------
   2 #
   3 # Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
   4 # This program and the accompanying materials
   5 # are licensed and made available under the terms and conditions of the BSD License
   6 # which accompanies this distribution.  The full text of the license may be found at
   7 # http://opensource.org/licenses/bsd-license.php.
   8 #
   9 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11 #
  12 #------------------------------------------------------------------------------
  13
  14 ASM_GLOBAL ASM_PFX(internal_FPU_rmode)
  15 ASM_PFX(internal_FPU_rmode):
  16   fnstcw -4(%rsp)
  17   movl -4(%rsp),%eax
  18   shrl $10,%eax
  19   andl $3,%eax
  20   ret