5fc3b5d6c8
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10683 6f19259b-4bc3-4df7-8a09-765794883524
66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
/** @file
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Base Library CPU Functions for all architectures.
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Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "BaseLibInternals.h"
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/**
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Disables CPU interrupts and returns the interrupt state prior to the disable
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operation.
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@retval TRUE CPU interrupts were enabled on entry to this call.
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@retval FALSE CPU interrupts were disabled on entry to this call.
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**/
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BOOLEAN
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EFIAPI
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SaveAndDisableInterrupts (
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VOID
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)
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{
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BOOLEAN InterruptState;
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InterruptState = GetInterruptState ();
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DisableInterrupts ();
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return InterruptState;
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}
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/**
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Set the current CPU interrupt state.
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Sets the current CPU interrupt state to the state specified by
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InterruptState. If InterruptState is TRUE, then interrupts are enabled. If
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InterruptState is FALSE, then interrupts are disabled. InterruptState is
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returned.
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@param InterruptState TRUE if interrupts should be enabled. FALSE if
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interrupts should be disabled.
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@return InterruptState
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**/
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BOOLEAN
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EFIAPI
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SetInterruptState (
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IN BOOLEAN InterruptState
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)
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{
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if (InterruptState) {
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EnableInterrupts ();
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} else {
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DisableInterrupts ();
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}
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return InterruptState;
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}
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