MdePkg/Library/BaseLib/Arm/GetInterruptsState.S File Reference


Detailed Description

#------------------------------------------------------------------------------
#
# 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
GCC_ASM_EXPORT (GetInterruptState)

#/**
# Retrieves the current CPU interrupt state.
#
# Returns TRUE is interrupts are currently enabled. Otherwise
# returns FALSE.
#
#
Return values:
TRUE CPU interrupts are enabled.
#
FALSE CPU interrupts are disabled.
#
#
BOOLEAN
EFIAPI
GetInterruptState (
# VOID
# );
#
ASM_PFX(GetInterruptState):
mrs R0, CPSR
tst R0, #0x80 if IRQ is enabled.
moveq R0, #1
movne R0, #0
bx LR


Generated on Thu Sep 24 23:14:22 2015 for MdePkg[ALL] by  doxygen 1.5.7.1