1 files changed, 0 insertions, 46 deletions
diff --git a/OvmfPkg/XenBusDxe/TestAndClearBit.c b/OvmfPkg/XenBusDxe/TestAndClearBit.c
deleted file mode 100644
index ac01b3ce50..0000000000
--- a/OvmfPkg/XenBusDxe/TestAndClearBit.c
+++ /dev/null
@@ -1,46 +0,0 @@
-/** @file
-  Implementation of TestAndClearBit using compare-exchange primitive
-
-  Copyright (C) 2015, Linaro Ltd.
-  Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
-
-  This program and the accompanying materials
-  are licensed and made available under the terms and conditions of the BSD License
-  which accompanies this distribution.  The full text of the license may be found at
-  http://opensource.org/licenses/bsd-license.php
-
-  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
-  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
-**/
-
-#include <Base.h>
-#include <Library/SynchronizationLib.h>
-
-INT32
-EFIAPI
-TestAndClearBit (
-  IN INT32            Bit,
-  IN VOID             *Address
-  )
-{
-  UINT16    Word, Read;
-  UINT16    Mask;
-
-  //
-  // Calculate the effective address relative to 'Address' based on the
-  // higher order bits of 'Bit'. Use signed shift instead of division to
-  // ensure we round towards -Inf, and end up with a positive shift in
-  // 'Bit', even if 'Bit' itself is negative.
-  //
-  Address = (VOID*)((UINT8*) Address + ((Bit >> 4) * sizeof(UINT16)));
-  Mask = 1U << (Bit & 15);
-
-  for (Word = *(UINT16 *) Address; Word & Mask; Word = Read) {
-    Read = InterlockedCompareExchange16 (Address, Word, Word & ~Mask);
-    if (Read == Word) {
-      return 1;
-    }
-  }
-  return 0;
-}