projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| a04618e6 JJ |
1 | ;------------------------------------------------------------------------------\r |
| 2 | ;\r | |
| 4cee954e | 3 | ; Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r |
| a04618e6 | 4 | ; Copyright (c) 2015, Linaro Ltd. All rights reserved.<BR>\r |
| 9344f092 | 5 | ; SPDX-License-Identifier: BSD-2-Clause-Patent\r |
| a04618e6 JJ |
6 | ;\r |
| 7 | ; Module Name:\r | |
| 8 | ;\r | |
| 9 | ; InterlockedCompareExchange16.Asm\r | |
| 10 | ;\r | |
| 11 | ; Abstract:\r | |
| 12 | ;\r | |
| 13 | ; InterlockedCompareExchange16 function\r | |
| 14 | ;\r | |
| 15 | ; Notes:\r | |
| 16 | ;\r | |
| 17 | ;------------------------------------------------------------------------------\r | |
| 18 | \r | |
| 19 | DEFAULT REL\r | |
| 20 | SECTION .text\r | |
| 21 | \r | |
| 22 | ;------------------------------------------------------------------------------\r | |
| 23 | ; UINT16\r | |
| 24 | ; EFIAPI\r | |
| fa1beef5 | 25 | ; InternalSyncCompareExchange16 (\r |
| 4cee954e | 26 | ; IN volatile UINT16 *Value,\r |
| a04618e6 JJ |
27 | ; IN UINT16 CompareValue,\r |
| 28 | ; IN UINT16 ExchangeValue\r | |
| 29 | ; );\r | |
| 30 | ;------------------------------------------------------------------------------\r | |
| 31 | global ASM_PFX(InternalSyncCompareExchange16)\r | |
| 32 | ASM_PFX(InternalSyncCompareExchange16):\r | |
| 33 | mov ax, dx\r | |
| 34 | lock cmpxchg [rcx], r8w\r | |
| 35 | ret\r | |
| 36 | \r |