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Diffstat (limited to 'UnixPkg/Library/UnixBaseLib/X86GetInterruptState.c')
-rw-r--r--UnixPkg/Library/UnixBaseLib/X86GetInterruptState.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/UnixPkg/Library/UnixBaseLib/X86GetInterruptState.c b/UnixPkg/Library/UnixBaseLib/X86GetInterruptState.c
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index 0000000000..ed3f495f9c
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+++ b/UnixPkg/Library/UnixBaseLib/X86GetInterruptState.c
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+/** @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);
+}
+
+