MdePkg/Library/BaseLib/Ia32/FxRestore.c

   1 /** @file
   2   AsmFxRestore function
   3
   4   Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php.
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15
  16 #include "BaseLibInternals.h"
  17
  18
  19 /**
  20   Restores the current floating point/SSE/SSE2 context from a buffer.
  21
  22   Restores the current floating point/SSE/SSE2 state from the buffer specified
  23   by Buffer. Buffer must be aligned on a 16-byte boundary. This function is
  24   only available on IA-32 and x64.
  25
  26   @param  Buffer  Pointer to a buffer to save the floating point/SSE/SSE2 context.
  27
  28 **/
  29 VOID
  30 EFIAPI
  31 InternalX86FxRestore (
  32   IN CONST IA32_FX_BUFFER *Buffer
  33   )
  34 {
  35   _asm {
  36     mov     eax, Buffer
  37     fxrstor [eax]
  38   }
  39 }
  40