diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/Arm/GetInterruptsState.asm')
| -rw-r--r-- | MdePkg/Library/BaseLib/Arm/GetInterruptsState.asm | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/Arm/GetInterruptsState.asm b/MdePkg/Library/BaseLib/Arm/GetInterruptsState.asm new file mode 100644 index 0000000000..9516cfc3e1 --- /dev/null +++ b/MdePkg/Library/BaseLib/Arm/GetInterruptsState.asm @@ -0,0 +1,45 @@ +;------------------------------------------------------------------------------ +; +; GetInterruptState() function for ARM +; +; Copyright (c) 2006 - 2009, Intel Corporation<BR> +; Portions copyright (c) 2008-2009 Apple Inc.<BR> +; All rights reserved. This program and the accompanying materials +; are licensed and made available under the terms and conditions of the BSD License +; which accompanies this distribution. The full text of the license may be found at +; http://opensource.org/licenses/bsd-license.php +; +; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, +; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. +; +;------------------------------------------------------------------------------ + + EXPORT GetInterruptState + + AREA Interrupt_enable, CODE, READONLY + +;/** +; Retrieves the current CPU interrupt state. +; +; Returns TRUE is interrupts are currently enabled. Otherwise +; returns FALSE. +; +; @retval TRUE CPU interrupts are enabled. +; @retval FALSE CPU interrupts are disabled. +; +;**/ +; +;BOOLEAN +;EFIAPI +;GetInterruptState ( +; VOID +; ); +; +GetInterruptState + MRS R0, CPSR + TST R0, #0x80 ;Check if IRQ is enabled. + MOVEQ R0, #1 + MOVNE R0, #0 + BX LR + + END |