#------------------------------------------------------------------------------ | |
# | |
# GetInterruptState() function for ARM | |
# | |
# Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> | |
# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR> | |
# SPDX-License-Identifier: BSD-2-Clause-Patent | |
# | |
#------------------------------------------------------------------------------ | |
.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 |