1 files changed, 65 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/Cpu.c b/MdePkg/Library/BaseLib/Cpu.c
new file mode 100644
index 0000000000000..38bab1e2a5bab
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Cpu.c
@@ -0,0 +1,65 @@
+/** @file
+  Base Library CPU Functions for all architectures.
+
+  Copyright (c) 2006 - 2010, 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"
+
+
+/**
+  Disables CPU interrupts and returns the interrupt state prior to the disable
+  operation.
+
+  @retval TRUE  CPU interrupts were enabled on entry to this call.
+  @retval FALSE CPU interrupts were disabled on entry to this call.
+
+**/
+BOOLEAN
+EFIAPI
+SaveAndDisableInterrupts (
+  VOID
+  )
+{
+  BOOLEAN                           InterruptState;
+
+  InterruptState = GetInterruptState ();
+  DisableInterrupts ();
+  return InterruptState;
+}
+
+/**
+  Set the current CPU interrupt state.
+
+  Sets the current CPU interrupt state to the state specified by
+  InterruptState. If InterruptState is TRUE, then interrupts are enabled. If
+  InterruptState is FALSE, then interrupts are disabled. InterruptState is
+  returned.
+
+  @param  InterruptState  TRUE if interrupts should be enabled. FALSE if
+                          interrupts should be disabled.
+
+  @return InterruptState
+
+**/
+BOOLEAN
+EFIAPI
+SetInterruptState (
+  IN      BOOLEAN                   InterruptState
+  )
+{
+  if (InterruptState) {
+    EnableInterrupts ();
+  } else {
+    DisableInterrupts ();
+  }
+  return InterruptState;
+}