1 files changed, 43 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseLib/Arm/GetInterruptsState.S b/Core/MdePkg/Library/BaseLib/Arm/GetInterruptsState.S
new file mode 100644
index 0000000000..94b3596fc6
--- /dev/null
+++ b/Core/MdePkg/Library/BaseLib/Arm/GetInterruptsState.S
@@ -0,0 +1,43 @@
+#------------------------------------------------------------------------------ 
+#
+# 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.
+#
+#------------------------------------------------------------------------------
+
+.text
+.p2align 2
+GCC_ASM_EXPORT (GetInterruptState)
+
+#/**
+#  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
+# );
+#
+ASM_PFX(GetInterruptState):
+    mrs    R0, CPSR
+    tst    R0, #0x80  @Check if IRQ is enabled.
+    moveq  R0, #1
+    movne  R0, #0
+    bx     LR