0f895683da
This ensures the .type directive is used to mark them as function symbols Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Olivier Martin <Olivier.Martin@arm.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17904 6f19259b-4bc3-4df7-8a09-765794883524
46 lines
1.4 KiB
ArmAsm
46 lines
1.4 KiB
ArmAsm
#------------------------------------------------------------------------------
|
|
#
|
|
# GetInterruptState() function for AArch64
|
|
#
|
|
# Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
|
|
# Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
|
|
# Portions copyright (c) 2011 - 2013, ARM Ltd. All rights reserved.<BR>
|
|
# 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
|
|
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 x0, daif
|
|
tst x0, #2 // Check if IRQ is enabled. Enabled if 0.
|
|
mov w0, #0
|
|
mov w1, #1
|
|
csel w0, w1, w0, ne
|
|
ret
|