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0b45f691 JJ |
1 | ;------------------------------------------------------------------------------\r |
2 | ;\r | |
4cee954e | 3 | ; Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>\r |
0b45f691 | 4 | ; Copyright (c) 2015, Linaro Ltd. All rights reserved.<BR>\r |
9344f092 | 5 | ; SPDX-License-Identifier: BSD-2-Clause-Patent\r |
0b45f691 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 | SECTION .text\r | |
20 | \r | |
21 | ;------------------------------------------------------------------------------\r | |
22 | ; UINT16\r | |
23 | ; EFIAPI\r | |
24 | ; InternalSyncCompareExchange16 (\r | |
4cee954e | 25 | ; IN volatile UINT16 *Value,\r |
0b45f691 JJ |
26 | ; IN UINT16 CompareValue,\r |
27 | ; IN UINT16 ExchangeValue\r | |
28 | ; );\r | |
29 | ;------------------------------------------------------------------------------\r | |
30 | global ASM_PFX(InternalSyncCompareExchange16)\r | |
31 | ASM_PFX(InternalSyncCompareExchange16):\r | |
32 | mov ecx, [esp + 4]\r | |
33 | mov ax, [esp + 8]\r | |
34 | mov dx, [esp + 12]\r | |
35 | lock cmpxchg [ecx], dx\r | |
36 | ret\r | |
37 | \r |