1 files changed, 41 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseLib/X86GetInterruptState.c b/Core/MdePkg/Library/BaseLib/X86GetInterruptState.c
new file mode 100644
index 0000000000..ed3f495f9c
--- /dev/null
+++ b/Core/MdePkg/Library/BaseLib/X86GetInterruptState.c
@@ -0,0 +1,41 @@
+/** @file
+  IA-32/x64 GetInterruptState()
+
+  Copyright (c) 2006 - 2008, 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 "BaseLibInternals.h"
+
+
+/**
+  Retrieves the current CPU interrupt state.
+
+  Returns TRUE is interrupts are currently enabled. Otherwise
+  returns FALSE.
+
+  @retval TRUE  CPU interrupts are enabled.
+  @retval FALSE CPU interrupts are disabled.
+
+**/
+BOOLEAN
+EFIAPI
+GetInterruptState (
+  VOID
+  )
+{
+  IA32_EFLAGS32                     EFlags;
+
+  EFlags.UintN = AsmReadEflags ();
+  return (BOOLEAN)(1 == EFlags.Bits.IF);
+}
+
+