MdePkg/Library/BaseLib/Ia32/FxSave.c


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31

/** @file
  AsmFxSave function

  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "BaseLibInternals.h"

/**
  Save the current floating point/SSE/SSE2 context to a buffer.

  Saves the current floating point/SSE/SSE2 state to the buffer specified by
  Buffer. Buffer must be aligned on a 16-byte boundary. This function is only
  available on IA-32 and x64.

  @param  Buffer  The pointer to a buffer to save the floating point/SSE/SSE2 context.

**/
VOID
EFIAPI
InternalX86FxSave (
  OUT IA32_FX_BUFFER  *Buffer
  )
{
  _asm {
    mov     eax, Buffer
    fxsave  [eax]
  }
}