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1 | /** @file\r | |
2 | AsmReadDr1 function\r | |
3 | \r | |
4 | Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r | |
5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
6 | \r | |
7 | **/\r | |
8 | \r | |
9 | /**\r | |
10 | Reads the current value of Debug Register 1 (DR1).\r | |
11 | \r | |
12 | Reads and returns the current value of DR1. This function is only available\r | |
13 | on IA-32 and x64. This returns a 32-bit value on IA-32 and a 64-bit value on\r | |
14 | x64.\r | |
15 | \r | |
16 | @return The value of Debug Register 1 (DR1).\r | |
17 | \r | |
18 | **/\r | |
19 | UINTN\r | |
20 | EFIAPI\r | |
21 | AsmReadDr1 (\r | |
22 | VOID\r | |
23 | )\r | |
24 | {\r | |
25 | __asm {\r | |
26 | mov eax, dr1\r | |
27 | }\r | |
28 | }\r |