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#------------------------------------------------------------------------------
#
# 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:
#
# InterlockedCompareExchange32.Asm
#
# Abstract:
#
# InterlockedCompareExchange32 function
#
# Notes:
#
#------------------------------------------------------------------------------
#------------------------------------------------------------------------------
# VOID *
# EFIAPI
# InterlockedCompareExchangePointer (
# IN VOID **Value,
# IN VOID *CompareValue,
# IN VOID *ExchangeValue
# );
#------------------------------------------------------------------------------
.global _InterlockedCompareExchangePointer
_InterlockedCompareExchangePointer:
#
# InterlockedCompareExchangePointer() shares the same code as
# InterlockedCompareExchange32() on IA32 and thus no code inside this
# function
#
#------------------------------------------------------------------------------
# UINT32
# EFIAPI
# InterlockedCompareExchange32 (
# IN UINT32 *Value,
# IN UINT32 CompareValue,
# IN UINT32 ExchangeValue
# );
#------------------------------------------------------------------------------
.global _InterlockedCompareExchange32
_InterlockedCompareExchange32:
movl 4(%esp),%ecx
movl 8(%esp),%eax
movl 12(%esp),%edx
lock cmpxchgl %edx,(%ecx)
ret
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