MdePkg/Library/BaseLib/Ia32/FxRestore.c

   1 /** @file
   2   AsmFxRestore function
   3
   4   Copyright (c) 2006 - 2007, Intel Corporation<BR>
   5   All rights reserved. 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 common header file for this module.
  17 //
  18 #include <BaseLibInternals.h>
  19
  20
  21 /**
  22   Restores the current floating point/SSE/SSE2 context from a buffer.
  23
  24   Restores the current floating point/SSE/SSE2 state from the buffer specified
  25   by Buffer. Buffer must be aligned on a 16-byte boundary. This function is
  26   only available on IA-32 and X64.
  27
  28   @param  Buffer  Pointer to a buffer to save the floating point/SSE/SSE2 context.
  29
  30 **/
  31 VOID
  32 EFIAPI
  33 InternalX86FxRestore (
  34   IN CONST IA32_FX_BUFFER *Buffer
  35   )
  36 {
  37   _asm {
  38     mov     eax, Buffer
  39     fxrstor [eax]
  40   }
  41 }
  42