| #------------------------------------------------------------------------------ | |
| # | |
| # Copyright (c) 2006 - 2009, 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.S | |
| # | |
| # Abstract: | |
| # | |
| # InterlockedCompareExchange32 function | |
| # | |
| # Notes: | |
| # | |
| #------------------------------------------------------------------------------ | |
| #------------------------------------------------------------------------------ | |
| # UINT32 | |
| # EFIAPI | |
| # InterlockedCompareExchange32 ( | |
| # IN UINT32 *Value, | |
| # IN UINT32 CompareValue, | |
| # IN UINT32 ExchangeValue | |
| # ); | |
| #------------------------------------------------------------------------------ | |
| ASM_GLOBAL ASM_PFX(InternalSyncCompareExchange32) | |
| ASM_PFX(InternalSyncCompareExchange32): | |
| mov %edx, %eax | |
| lock/cmpxchg %r8d, (%rcx) | |
| ret |