projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | .text\r | |
| 18 | .p2align 2\r | |
| 19 | .globl _GetInterruptState\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 | |
| 01a54966 | 40 | tst R0, #0x80 @Check if IRQ is enabled.\r |
| ebd04fc2 | 41 | moveq R0, #1\r |
| 42 | movne R0, #0\r | |
| 43 | bx LR\r |