1 files changed, 35 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseLib/Arm/DisableInterrupts.S b/Core/MdePkg/Library/BaseLib/Arm/DisableInterrupts.S
new file mode 100644
index 0000000000..e5740862d7
--- /dev/null
+++ b/Core/MdePkg/Library/BaseLib/Arm/DisableInterrupts.S
@@ -0,0 +1,35 @@
+#------------------------------------------------------------------------------ 
+#
+# DisableInterrupts() 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(DisableInterrupts)
+
+#/**
+#  Disables CPU interrupts.
+#
+#**/
+#VOID
+#EFIAPI
+#DisableInterrupts (
+#  VOID
+#  );
+#
+ASM_PFX(DisableInterrupts):
+    mrs  R0,CPSR
+    orr  R0,R0,#0x80    @Disable IRQ interrupts
+    msr  CPSR_c,R0
+    bx   LR