sync GCC assembly files with MASM assembly files

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / InterlockedCompareExchange64.S

#------------------------------------------------------------------------------\r
#\r
# Copyright (c) 2006, Intel Corporation\r
# All rights reserved. This program and the accompanying materials\r
# are licensed and made available under the terms and conditions of the BSD License\r
# which accompanies this distribution.  The full text of the license may be found at\r
# http://opensource.org/licenses/bsd-license.php\r
#\r
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
#\r
# Module Name:\r
#\r
#   InterlockedCompareExchange64.Asm\r
#\r
# Abstract:\r
#\r
#   InternalSyncCompareExchange64 function\r
#\r
# Notes:\r
#\r
#------------------------------------------------------------------------------\r
\r
\r
\r
     \r
\r
#------------------------------------------------------------------------------\r
# UINT64\r
# EFIAPI\r
# InternalSyncCompareExchange64 (\r
#   IN      UINT64                    *Value,\r
#   IN      UINT64                    CompareValue,\r
#   IN      UINT64                    ExchangeValue\r
#   );\r
#------------------------------------------------------------------------------\r
.global _InternalSyncCompareExchange64\r
_InternalSyncCompareExchange64:\r
    push    %esi\r
    push    %ebx\r
    movl    12(%esp),%esi\r
    movl    16(%esp),%eax\r
    movl    20(%esp),%edx\r
    movl    24(%esp),%ebx\r
    movl    28(%esp),%ecx\r
    lock    \r
    cmpxchg8b   (%esi)\r
    pop     %ebx\r
    pop     %esi\r
    ret\r
\r
\r
\r