1#------------------------------------------------------------------------------
2#
3# GetInterruptState() function for ARM
4#
5# Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
6# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
7# This program and the accompanying materials
8# are licensed and made available under the terms and conditions of the BSD License
9# which accompanies this distribution.  The full text of the license may be found at
10# http://opensource.org/licenses/bsd-license.php.
11#
12# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
13# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
14#
15#------------------------------------------------------------------------------
16
17.text
18.p2align 2
19GCC_ASM_EXPORT (GetInterruptState)
20
21#/**
22#  Retrieves the current CPU interrupt state.
23#
24#  Returns TRUE is interrupts are currently enabled. Otherwise
25#  returns FALSE.
26#
27#  @retval TRUE  CPU interrupts are enabled.
28#  @retval FALSE CPU interrupts are disabled.
29#
30#**/
31#
32#BOOLEAN
33#EFIAPI
34#GetInterruptState (
35#  VOID
36# );
37#
38ASM_PFX(GetInterruptState):
39    mrs    R0, CPSR
40    tst    R0, #0x80  @Check if IRQ is enabled.
41    moveq  R0, #1
42    movne  R0, #0
43    bx     LR
44