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e1f414b6 | 1 | /** @file\r |
2 | Base Library CPU Functions for all architectures.\r | |
3 | \r | |
e389c39b | 4 | Copyright (c) 2006 - 2008, Intel Corporation<BR>\r |
e1f414b6 | 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 | |
e1f414b6 | 13 | **/\r |
14 | \r | |
47fc17d8 | 15 | #include "BaseLibInternals.h"\r |
f734a10a | 16 | \r |
e1f414b6 | 17 | \r |
18 | /**\r | |
19 | Disables CPU interrupts and returns the interrupt state prior to the disable\r | |
20 | operation.\r | |
21 | \r | |
e1f414b6 | 22 | @retval TRUE CPU interrupts were enabled on entry to this call.\r |
23 | @retval FALSE CPU interrupts were disabled on entry to this call.\r | |
24 | \r | |
25 | **/\r | |
26 | BOOLEAN\r | |
27 | EFIAPI\r | |
28 | SaveAndDisableInterrupts (\r | |
29 | VOID\r | |
30 | )\r | |
31 | {\r | |
32 | BOOLEAN InterruptState;\r | |
33 | \r | |
34 | InterruptState = GetInterruptState ();\r | |
35 | DisableInterrupts ();\r | |
36 | return InterruptState;\r | |
37 | }\r | |
38 | \r | |
39 | /**\r | |
40 | Set the current CPU interrupt state.\r | |
41 | \r | |
42 | Sets the current CPU interrupt state to the state specified by\r | |
43 | InterruptState. If InterruptState is TRUE, then interrupts are enabled. If\r | |
44 | InterruptState is FALSE, then interrupts are disabled. InterruptState is\r | |
45 | returned.\r | |
46 | \r | |
47 | @param InterruptState TRUE if interrupts should enabled. FALSE if\r | |
48 | interrupts should be disabled.\r | |
49 | \r | |
9aa049d9 | 50 | @return InterruptState\r |
e1f414b6 | 51 | \r |
52 | **/\r | |
53 | BOOLEAN\r | |
54 | EFIAPI\r | |
55 | SetInterruptState (\r | |
56 | IN BOOLEAN InterruptState\r | |
57 | )\r | |
58 | {\r | |
59 | if (InterruptState) {\r | |
60 | EnableInterrupts ();\r | |
61 | } else {\r | |
62 | DisableInterrupts ();\r | |
63 | }\r | |
64 | return InterruptState;\r | |
65 | }\r |