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e1f414b6 | 1 | /** @file\r |
2 | AsmReadDr7 function\r | |
3 | \r | |
4 | Copyright (c) 2006 - 2007, Intel Corporation<BR>\r | |
5 | All rights reserved. This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
1efcc4ae | 15 | \r |
f734a10a | 16 | \r |
e1f414b6 | 17 | \r |
42eedea9 | 18 | /**\r |
19 | Reads the current value of Debug Register 7 (DR7).\r | |
20 | \r | |
21 | Reads and returns the current value of DR7. This function is only available\r | |
030cd1a2 | 22 | on IA-32 and x64. This returns a 32-bit value on IA-32 and a 64-bit value on\r |
23 | x64.\r | |
42eedea9 | 24 | \r |
25 | @return The value of Debug Register 7 (DR7).\r | |
26 | \r | |
27 | **/\r | |
e1f414b6 | 28 | UINTN\r |
29 | EFIAPI\r | |
30 | AsmReadDr7 (\r | |
31 | VOID\r | |
32 | )\r | |
33 | {\r | |
34 | __asm {\r | |
35 | mov eax, dr7\r | |
36 | }\r | |
37 | }\r | |
38 | \r |