1 files changed, 45 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseLib/Arm/GetInterruptsState.asm b/Core/MdePkg/Library/BaseLib/Arm/GetInterruptsState.asm
new file mode 100644
index 0000000000..1e2e49c211
--- /dev/null
+++ b/Core/MdePkg/Library/BaseLib/Arm/GetInterruptsState.asm
@@ -0,0 +1,45 @@
+;------------------------------------------------------------------------------ 
+;
+; GetInterruptState() function for ARM
+;
+; Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
+; Portions copyright (c) 2008 - 2009, Apple Inc. 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.
+;
+;------------------------------------------------------------------------------
+
+    EXPORT GetInterruptState
+
+    AREA Interrupt_enable, CODE, READONLY
+
+;/**
+;  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
+; );
+;
+GetInterruptState
+    MRS     R0, CPSR
+    TST     R0, #0x80                ;Check if IRQ is enabled.
+    MOVEQ   R0, #1
+    MOVNE   R0, #0
+    BX      LR
+    
+    END