;------------------------------------------------------------------------------ | |
; | |
; 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 | |
; | |
;------------------------------------------------------------------------------ | |
EXPORT GetInterruptState | |
AREA Interrupt_enable, CODE, READONLY | |
;/** | |
; 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 | |
END |