| #------------------------------------------------------------------------------ | |
| # | |
| # 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 |