audk/MdePkg/Library/BaseLib/Ia32/InterlockedDecrement.S

39 lines
1.2 KiB
ArmAsm

#------------------------------------------------------------------------------
#
# Copyright (c) 2006, Intel Corporation
# 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.
#
# Module Name:
#
# InterlockedDecrement.Asm
#
# Abstract:
#
# InternalSyncDecrement function
#
# Notes:
#
#------------------------------------------------------------------------------
.globl ASM_PFX(InternalSyncDecrement)
#------------------------------------------------------------------------------
# UINT32
# EFIAPI
# InternalSyncDecrement (
# IN UINT32 *Value
# );
#------------------------------------------------------------------------------
ASM_PFX(InternalSyncDecrement):
movl 4(%esp), %eax
lock
decl (%eax)
movl (%eax), %eax
ret