#------------------------------------------------------------------------------ # # GetInterruptState() function for ARM # # Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.
# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.
# 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 .globl _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 # ); # _GetInterruptState: mrs R0, CPSR tst R0, #0x80 @Check if IRQ is enabled. moveq R0, #1 movne R0, #0 bx LR