MdePkg/Library/BaseLib/Ia32/ReadCs.c


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/** @file
  AsmReadCs function

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

**/

/**
  Reads the current value of Code Segment Register (CS).

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

  @return The current value of CS.

**/
UINT16
EFIAPI
AsmReadCs (
  VOID
  )
{
  __asm {
    xor     eax, eax
    mov     ax, cs
  }
}