audk/MdePkg/Library/BaseLib/Arm/EnableInterrupts.S

#------------------------------------------------------------------------------ 
#
# EnableInterrupts() for ARM
#
# Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
# Portions copyright (c) 2008 - 2009, Apple Inc. 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
.globl ASM_PFX(EnableInterrupts)
INTERWORK_FUNC(EnableInterrupts)


#/**
#  Enables CPU interrupts.
#
#**/
#VOID
#EFIAPI
#EnableInterrupts (
#  VOID
#  );
#
ASM_PFX(EnableInterrupts):
    mrs  R0,CPSR
    bic  R0,R0,#0x80    @Enable IRQ interrupts
    msr  CPSR_c,R0
    bx   LR