Add in the 1st version of ECP.

[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Library / EdkIIGlueLib / Library / BaseLib / Ipf / InterlockedCompareExchange64.s

/// Copyright (c) 2004, 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.s\r
///\r
/// Abstract:\r
///\r
///\r
\r
.auto\r
.text\r
\r
.proc   InternalSyncCompareExchange64\r
.type   InternalSyncCompareExchange64, @function\r
InternalSyncCompareExchange64::\r
        mov                 ar.ccv = r33\r
        cmpxchg8.rel        r8  = [r32], r34\r
        mf\r
        br.ret.sptk.many    b0\r
.endp   InternalSyncCompareExchange64