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ebd04fc2 | 1 | ;------------------------------------------------------------------------------ \r |
2 | ;\r | |
3 | ; GetInterruptState() function for ARM\r | |
4 | ;\r | |
bb817c56 HT |
5 | ; Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>\r |
6 | ; Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r | |
7 | ; This program and the accompanying materials\r | |
ebd04fc2 | 8 | ; are licensed and made available under the terms and conditions of the BSD License\r |
9 | ; which accompanies this distribution. The full text of the license may be found at\r | |
10 | ; http://opensource.org/licenses/bsd-license.php\r | |
11 | ;\r | |
12 | ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
13 | ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
14 | ;\r | |
15 | ;------------------------------------------------------------------------------\r | |
16 | \r | |
17 | EXPORT GetInterruptState\r | |
18 | \r | |
19 | AREA Interrupt_enable, CODE, READONLY\r | |
20 | \r | |
21 | ;/**\r | |
22 | ; Retrieves the current CPU interrupt state.\r | |
23 | ;\r | |
24 | ; Returns TRUE is interrupts are currently enabled. Otherwise\r | |
25 | ; returns FALSE.\r | |
26 | ;\r | |
27 | ; @retval TRUE CPU interrupts are enabled.\r | |
28 | ; @retval FALSE CPU interrupts are disabled.\r | |
29 | ;\r | |
30 | ;**/\r | |
31 | ;\r | |
32 | ;BOOLEAN\r | |
33 | ;EFIAPI\r | |
34 | ;GetInterruptState (\r | |
35 | ; VOID\r | |
36 | ; );\r | |
37 | ;\r | |
38 | GetInterruptState\r | |
39 | MRS R0, CPSR\r | |
40 | TST R0, #0x80 ;Check if IRQ is enabled.\r | |
41 | MOVEQ R0, #1\r | |
42 | MOVNE R0, #0\r | |
43 | BX LR\r | |
44 | \r | |
45 | END\r |