MdePkg/Library/BaseLib/Ia32/ReadFs.c


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/** @file
  AsmReadFs function

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

**/


/**
  Reads the current value of FS Data Segment Register (FS).

  Reads and returns the current value of FS. This function is only available on
  IA-32 and x64.

  @return The current value of FS.

**/
UINT16
EFIAPI
AsmReadFs (
  VOID
  )
{
  __asm {
    xor     eax, eax
    mov     ax, fs
  }
}