projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 20ddf988 JJ |
1 | ;------------------------------------------------------------------------------\r |
| 2 | ;\r | |
| 4cee954e | 3 | ; Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r |
| 9344f092 | 4 | ; SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| 20ddf988 JJ |
5 | ;\r |
| 6 | ; Module Name:\r | |
| 7 | ;\r | |
| 8 | ; InterlockedCompareExchange32.Asm\r | |
| 9 | ;\r | |
| 10 | ; Abstract:\r | |
| 11 | ;\r | |
| 12 | ; InterlockedCompareExchange32 function\r | |
| 13 | ;\r | |
| 14 | ; Notes:\r | |
| 15 | ;\r | |
| 16 | ;------------------------------------------------------------------------------\r | |
| 17 | \r | |
| 18 | SECTION .text\r | |
| 19 | \r | |
| 20 | ;------------------------------------------------------------------------------\r | |
| 21 | ; UINT32\r | |
| 22 | ; EFIAPI\r | |
| 23 | ; InternalSyncCompareExchange32 (\r | |
| 4cee954e | 24 | ; IN volatile UINT32 *Value,\r |
| 20ddf988 JJ |
25 | ; IN UINT32 CompareValue,\r |
| 26 | ; IN UINT32 ExchangeValue\r | |
| 27 | ; );\r | |
| 28 | ;------------------------------------------------------------------------------\r | |
| 29 | global ASM_PFX(InternalSyncCompareExchange32)\r | |
| 30 | ASM_PFX(InternalSyncCompareExchange32):\r | |
| 31 | mov ecx, [esp + 4]\r | |
| 32 | mov eax, [esp + 8]\r | |
| 33 | mov edx, [esp + 12]\r | |
| 34 | lock cmpxchg [ecx], edx\r | |
| 35 | ret\r | |
| 36 | \r |