diff options
| author | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-06-22 03:21:45 +0000 |
|---|---|---|
| committer | vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524> | 2007-06-22 03:21:45 +0000 |
| commit | e1f414b6a7d8a0424e0e01f655b09a4612b4d0e8 (patch) | |
| tree | 32d74f9463f0b5c6a28ff6aff73709219d437604 /MdePkg/Library/BaseLib/Cpu.c | |
| parent | e053747a04ad7b8d71c7593b93e1575ba0057a91 (diff) | |
Import some basic libraries instances for Mde Packages.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2704 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'MdePkg/Library/BaseLib/Cpu.c')
| -rw-r--r-- | MdePkg/Library/BaseLib/Cpu.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/Cpu.c b/MdePkg/Library/BaseLib/Cpu.c new file mode 100644 index 0000000000..d8564c04d4 --- /dev/null +++ b/MdePkg/Library/BaseLib/Cpu.c @@ -0,0 +1,72 @@ +/** @file
+ Base Library CPU Functions for all architectures.
+
+ Copyright (c) 2006, Intel Corporation<BR>
+ All rights reserved. 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.
+
+ Module Name: Cpu.c
+
+**/
+
+//
+// Include common header file for this module.
+//
+#include "CommonHeader.h"
+
+/**
+ Disables CPU interrupts and returns the interrupt state prior to the disable
+ operation.
+
+ 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 enabled. FALSE if
+ interrupts should be disabled.
+
+ @return InterruptState
+
+**/
+BOOLEAN
+EFIAPI
+SetInterruptState (
+ IN BOOLEAN InterruptState
+ )
+{
+ if (InterruptState) {
+ EnableInterrupts ();
+ } else {
+ DisableInterrupts ();
+ }
+ return InterruptState;
+}
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